Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (48 commits)
[SCSI] aacraid: do not set valid bit in sense information
[SCSI] ses: add new Enclosure ULD
[SCSI] enclosure: add support for enclosure services
[SCSI] sr: fix test unit ready responses
[SCSI] u14-34f: fix data direction bug
[SCSI] aacraid: pci_set_dma_max_seg_size opened up for late model controllers
[SCSI] fix BUG when sum(scatterlist) > bufflen
[SCSI] arcmsr: updates (1.20.00.15)
[SCSI] advansys: make 3 functions static
[SCSI] Small cleanups for scsi_host.h
[SCSI] dc395x: fix uninitialized var warning
[SCSI] NCR53C9x: remove driver
[SCSI] remove m68k NCR53C9x based drivers
[SCSI] dec_esp: Remove driver
[SCSI] kernel-doc: fix scsi docbook
[SCSI] update my email address
[SCSI] add protocol definitions
[SCSI] sd: handle bad lba in sense information
[SCSI] qla2xxx: Update version number to 8.02.00-k8.
[SCSI] qla2xxx: Correct issue where incorrect init-fw mailbox command was used on non-NPIV capable ISPs.
...

Documentation/DocBook/scsi.tmpl

···
         <surname>Bottomley</surname>
         <affiliation>
           <address>
-            <email>[e-mail]</email>
+            <email>[e-mail]</email>
           </address>
         </affiliation>
       </author>

Documentation/scsi/ChangeLog.arcmsr

···
 **						2. modify the arcmsr_pci_slot_reset function
 **						3. modify the arcmsr_pci_ers_disconnect_forepart function
 **						4. modify the arcmsr_pci_ers_need_reset_forepart function
+** 1.20.00.15   09/27/2007	 Erich Chen & Nick Cheng
+**						1. add arcmsr_enable_eoi_mode() on adapter Type B
+** 						2. add readl(reg->iop2drv_doorbell_reg) in arcmsr_handle_hbb_isr()
+**						in case of the doorbell interrupt clearance is cached
+** 1.20.00.15   10/01/2007	 Erich Chen & Nick Cheng
+**						1. modify acb->devstate[i][j]
+**						as ARECA_RAID_GOOD instead of
+**						ARECA_RAID_GONE in arcmsr_alloc_ccb_pool
+** 1.20.00.15   11/06/2007       Erich Chen & Nick Cheng
+**						1. add conditional declaration for
+** 						arcmsr_pci_error_detected() and
+**						arcmsr_pci_slot_reset
+** 1.20.00.15	11/23/2007       Erich Chen & Nick Cheng
+**						1.check if the sg list member number
+**						exceeds arcmsr default limit in arcmsr_build_ccb()
+**						2.change the returned value type of arcmsr_build_ccb()
+**						from "void" to "int"
+**						3.add the conditional check if arcmsr_build_ccb()
+**						returns FAILED
+** 1.20.00.15	12/04/2007	 Erich Chen & Nick Cheng
+**						1. modify arcmsr_drain_donequeue() to ignore unknown
+**						command and let kernel process command timeout.
+**						This could handle IO request violating max. segments
+**						while Linux XFS over DM-CRYPT.
+**						Thanks to Milan Broz's comments <[e-mail]>
+** 1.20.00.15	12/24/2007	 Erich Chen & Nick Cheng
+**						1.fix the portability problems
+**						2.fix type B where we should _not_ iounmap() acb->pmu;
+**						it's not ioremapped.
+**						3.add return -ENOMEM if ioremap() fails
+**						4.transfer IS_SG64_ADDR w/ cpu_to_le32()
+**						in arcmsr_build_ccb
+**						5. modify acb->devstate[i][j] as ARECA_RAID_GONE instead of
+**						ARECA_RAID_GOOD in arcmsr_alloc_ccb_pool()
+**						6.fix arcmsr_cdb->Context as (unsigned long)arcmsr_cdb
+**						7.add the checking state of
+**						(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT) == 0
+**						in arcmsr_handle_hba_isr
+**						8.replace pci_alloc_consistent()/pci_free_consistent() with kmalloc()/kfree() in arcmsr_iop_message_xfer()
+**						9. fix the release of dma memory for type B in arcmsr_free_ccb_pool()
+**						10.fix the arcmsr_polling_hbb_ccbdone()
 **************************************************************************

Documentation/scsi/scsi_mid_low_api.txt

···
 =======
 The following people have contributed to this document:
         Mike Anderson <andmike at us dot ibm dot com>
-        James Bottomley <James dot Bottomley at steeleye dot com> 
+        James Bottomley <James dot Bottomley at hansenpartnership dot com>
         Patrick Mansfield <patmans at us dot ibm dot com> 
         Christoph Hellwig <hch at infradead dot org>
         Doug Ledford <dledford at redhat dot com>

drivers/misc/Kconfig

···
 
 	  If unsure, say N.
 
+config ENCLOSURE_SERVICES
+	tristate "Enclosure Services"
+	default n
+	help
+	  Provides support for intelligent enclosures (bays which
+	  contain storage devices).  You also need either a host
+	  driver (SCSI/ATA) which supports enclosures
+	  or a SCSI enclosure device (SES) to use these services.
+
 endif # MISC_DEVICES

drivers/misc/Makefile

···
 obj-$(CONFIG_FUJITSU_LAPTOP)	+= fujitsu-laptop.o
 obj-$(CONFIG_EEPROM_93CX6)	+= eeprom_93cx6.o
 obj-$(CONFIG_INTEL_MENLOW)	+= intel_menlow.o
+obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o

drivers/misc/enclosure.c

···
+/*
+ * Enclosure Services
+ *
+ * Copyright (C) 2008 James Bottomley <[e-mail]>
+ *
+**-----------------------------------------------------------------------------
+**
+**  This program is free software; you can redistribute it and/or
+**  modify it under the terms of the GNU General Public License
+**  version 2 as published by the Free Software Foundation.
+**
+**  This program is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**  GNU General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this program; if not, write to the Free Software
+**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+*/
+#include <linux/device.h>
+#include <linux/enclosure.h>
+#include <linux/err.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+
+static LIST_HEAD(container_list);
+static DEFINE_MUTEX(container_list_lock);
+static struct class enclosure_class;
+static struct class enclosure_component_class;
+
+/**
+ * enclosure_find - find an enclosure given a device
+ * @dev:	the device to find for
+ *
+ * Looks through the list of registered enclosures to see
+ * if it can find a match for a device.  Returns NULL if no
+ * enclosure is found. Obtains a reference to the enclosure class
+ * device which must be released with class_device_put().
+ */
+struct enclosure_device *enclosure_find(struct device *dev)
+{
+	struct enclosure_device *edev = NULL;
+
+	mutex_lock(&container_list_lock);
+	list_for_each_entry(edev, &container_list, node) {
+		if (edev->cdev.dev == dev) {
+			class_device_get(&edev->cdev);
+			mutex_unlock(&container_list_lock);
+			return edev;
+		}
+	}
+	mutex_unlock(&container_list_lock);
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(enclosure_find);
+
+/**
+ * enclosure_for_each_device - calls a function for each enclosure
+ * @fn:		the function to call
+ * @data:	the data to pass to each call
+ *
+ * Loops over all the enclosures calling the function.
+ *
+ * Note, this function uses a mutex which will be held across calls to
+ * @fn, so it must have non atomic context, and @fn may (although it
+ * should not) sleep or otherwise cause the mutex to be held for
+ * indefinite periods
+ */
+int enclosure_for_each_device(int (*fn)(struct enclosure_device *, void *),
+			      void *data)
+{
+	int error = 0;
+	struct enclosure_device *edev;
+
+	mutex_lock(&container_list_lock);
+	list_for_each_entry(edev, &container_list, node) {
+		error = fn(edev, data);
+		if (error)
+			break;
+	}
+	mutex_unlock(&container_list_lock);
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(enclosure_for_each_device);
+
+/**
+ * enclosure_register - register device as an enclosure
+ *
+ * @dev:	device containing the enclosure
+ * @components:	number of components in the enclosure
+ *
+ * This sets up the device for being an enclosure.  Note that @dev does
+ * not have to be a dedicated enclosure device.  It may be some other type
+ * of device that additionally responds to enclosure services
+ */
+struct enclosure_device *
+enclosure_register(struct device *dev, const char *name, int components,
+		   struct enclosure_component_callbacks *cb)
+{
+	struct enclosure_device *edev =
+		kzalloc(sizeof(struct enclosure_device) +
+			sizeof(struct enclosure_component)*components,
+			GFP_KERNEL);
+	int err, i;
+
+	BUG_ON(!cb);
+
+	if (!edev)
+		return ERR_PTR(-ENOMEM);
+
+	edev->components = components;
+
+	edev->cdev.class = &enclosure_class;
+	edev->cdev.dev = get_device(dev);
+	edev->cb = cb;
+	snprintf(edev->cdev.class_id, BUS_ID_SIZE, "%s", name);
+	err = class_device_register(&edev->cdev);
+	if (err)
+		goto err;
+
+	for (i = 0; i < components; i++)
+		edev->component[i].number = -1;
+
+	mutex_lock(&container_list_lock);
+	list_add_tail(&edev->node, &container_list);
+	mutex_unlock(&container_list_lock);
+
+	return edev;
+
+ err:
+	put_device(edev->cdev.dev);
+	kfree(edev);
+	return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(enclosure_register);
+
+static struct enclosure_component_callbacks enclosure_null_callbacks;
+
+/**
+ * enclosure_unregister - remove an enclosure
+ *
+ * @edev:	the registered enclosure to remove;
+ */
+void enclosure_unregister(struct enclosure_device *edev)
+{
+	int i;
+
+	mutex_lock(&container_list_lock);
+	list_del(&edev->node);
+	mutex_unlock(&container_list_lock);
+
+	for (i = 0; i < edev->components; i++)
+		if (edev->component[i].number != -1)
+			class_device_unregister(&edev->component[i].cdev);
+
+	/* prevent any callbacks into service user */
+	edev->cb = &enclosure_null_callbacks;
+	class_device_unregister(&edev->cdev);
+}
+EXPORT_SYMBOL_GPL(enclosure_unregister);
+
+static void enclosure_release(struct class_device *cdev)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev);
+
+	put_device(cdev->dev);
+	kfree(edev);
+}
+
+static void enclosure_component_release(struct class_device *cdev)
+{
+	if (cdev->dev)
+		put_device(cdev->dev);
+	class_device_put(cdev->parent);
+}
+
+/**
+ * enclosure_component_register - add a particular component to an enclosure
+ * @edev:	the enclosure to add the component
+ * @num:	the device number
+ * @type:	the type of component being added
+ * @name:	an optional name to appear in sysfs (leave NULL if none)
+ *
+ * Registers the component.  The name is optional for enclosures that
+ * give their components a unique name.  If not, leave the field NULL
+ * and a name will be assigned.
+ *
+ * Returns a pointer to the enclosure component or an error.
+ */
+struct enclosure_component *
+enclosure_component_register(struct enclosure_device *edev,
+			     unsigned int number,
+			     enum enclosure_component_type type,
+			     const char *name)
+{
+	struct enclosure_component *ecomp;
+	struct class_device *cdev;
+	int err;
+
+	if (number >= edev->components)
+		return ERR_PTR(-EINVAL);
+
+	ecomp = &edev->component[number];
+
+	if (ecomp->number != -1)
+		return ERR_PTR(-EINVAL);
+
+	ecomp->type = type;
+	ecomp->number = number;
+	cdev = &ecomp->cdev;
+	cdev->parent = class_device_get(&edev->cdev);
+	cdev->class = &enclosure_component_class;
+	if (name)
+		snprintf(cdev->class_id, BUS_ID_SIZE, "%s", name);
+	else
+		snprintf(cdev->class_id, BUS_ID_SIZE, "%u", number);
+
+	err = class_device_register(cdev);
+	if (err)
+		ERR_PTR(err);
+
+	return ecomp;
+}
+EXPORT_SYMBOL_GPL(enclosure_component_register);
+
+/**
+ * enclosure_add_device - add a device as being part of an enclosure
+ * @edev:	the enclosure device being added to.
+ * @num:	the number of the component
+ * @dev:	the device being added
+ *
+ * Declares a real device to reside in slot (or identifier) @num of an
+ * enclosure.  This will cause the relevant sysfs links to appear.
+ * This function may also be used to change a device associated with
+ * an enclosure without having to call enclosure_remove_device() in
+ * between.
+ *
+ * Returns zero on success or an error.
+ */
+int enclosure_add_device(struct enclosure_device *edev, int component,
+			 struct device *dev)
+{
+	struct class_device *cdev;
+
+	if (!edev || component >= edev->components)
+		return -EINVAL;
+
+	cdev = &edev->component[component].cdev;
+
+	class_device_del(cdev);
+	if (cdev->dev)
+		put_device(cdev->dev);
+	cdev->dev = get_device(dev);
+	return class_device_add(cdev);
+}
+EXPORT_SYMBOL_GPL(enclosure_add_device);
+
+/**
+ * enclosure_remove_device - remove a device from an enclosure
+ * @edev:	the enclosure device
+ * @num:	the number of the component to remove
+ *
+ * Returns zero on success or an error.
+ *
+ */
+int enclosure_remove_device(struct enclosure_device *edev, int component)
+{
+	struct class_device *cdev;
+
+	if (!edev || component >= edev->components)
+		return -EINVAL;
+
+	cdev = &edev->component[component].cdev;
+
+	class_device_del(cdev);
+	if (cdev->dev)
+		put_device(cdev->dev);
+	cdev->dev = NULL;
+	return class_device_add(cdev);
+}
+EXPORT_SYMBOL_GPL(enclosure_remove_device);
+
+/*
+ * sysfs pieces below
+ */
+
+static ssize_t enclosure_show_components(struct class_device *cdev, char *buf)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev);
+
+	return snprintf(buf, 40, "%d\n", edev->components);
+}
+
+static struct class_device_attribute enclosure_attrs[] = {
+	__ATTR(components, S_IRUGO, enclosure_show_components, NULL),
+	__ATTR_NULL
+};
+
+static struct class enclosure_class = {
+	.name			= "enclosure",
+	.owner			= THIS_MODULE,
+	.release		= enclosure_release,
+	.class_dev_attrs	= enclosure_attrs,
+};
+
+static const char *const enclosure_status [] = {
+	[ENCLOSURE_STATUS_UNSUPPORTED] = "unsupported",
+	[ENCLOSURE_STATUS_OK] = "OK",
+	[ENCLOSURE_STATUS_CRITICAL] = "critical",
+	[ENCLOSURE_STATUS_NON_CRITICAL] = "non-critical",
+	[ENCLOSURE_STATUS_UNRECOVERABLE] = "unrecoverable",
+	[ENCLOSURE_STATUS_NOT_INSTALLED] = "not installed",
+	[ENCLOSURE_STATUS_UNKNOWN] = "unknown",
+	[ENCLOSURE_STATUS_UNAVAILABLE] = "unavailable",
+};
+
+static const char *const enclosure_type [] = {
+	[ENCLOSURE_COMPONENT_DEVICE] = "device",
+	[ENCLOSURE_COMPONENT_ARRAY_DEVICE] = "array device",
+};
+
+static ssize_t get_component_fault(struct class_device *cdev, char *buf)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+	if (edev->cb->get_fault)
+		edev->cb->get_fault(edev, ecomp);
+	return snprintf(buf, 40, "%d\n", ecomp->fault);
+}
+
+static ssize_t set_component_fault(struct class_device *cdev, const char *buf,
+				   size_t count)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+	int val = simple_strtoul(buf, NULL, 0);
+
+	if (edev->cb->set_fault)
+		edev->cb->set_fault(edev, ecomp, val);
+	return count;
+}
+
+static ssize_t get_component_status(struct class_device *cdev, char *buf)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+	if (edev->cb->get_status)
+		edev->cb->get_status(edev, ecomp);
+	return snprintf(buf, 40, "%s\n", enclosure_status[ecomp->status]);
+}
+
+static ssize_t set_component_status(struct class_device *cdev, const char *buf,
+				   size_t count)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+	int i;
+
+	for (i = 0; enclosure_status[i]; i++) {
+		if (strncmp(buf, enclosure_status[i],
+			    strlen(enclosure_status[i])) == 0 &&
+		    (buf[strlen(enclosure_status[i])] == '\n' ||
+		     buf[strlen(enclosure_status[i])] == '\0'))
+			break;
+	}
+
+	if (enclosure_status[i] && edev->cb->set_status) {
+		edev->cb->set_status(edev, ecomp, i);
+		return count;
+	} else
+		return -EINVAL;
+}
+
+static ssize_t get_component_active(struct class_device *cdev, char *buf)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+	if (edev->cb->get_active)
+		edev->cb->get_active(edev, ecomp);
+	return snprintf(buf, 40, "%d\n", ecomp->active);
+}
+
+static ssize_t set_component_active(struct class_device *cdev, const char *buf,
+				   size_t count)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+	int val = simple_strtoul(buf, NULL, 0);
+
+	if (edev->cb->set_active)
+		edev->cb->set_active(edev, ecomp, val);
+	return count;
+}
+
+static ssize_t get_component_locate(struct class_device *cdev, char *buf)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+	if (edev->cb->get_locate)
+		edev->cb->get_locate(edev, ecomp);
+	return snprintf(buf, 40, "%d\n", ecomp->locate);
+}
+
+static ssize_t set_component_locate(struct class_device *cdev, const char *buf,
+				   size_t count)
+{
+	struct enclosure_device *edev = to_enclosure_device(cdev->parent);
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+	int val = simple_strtoul(buf, NULL, 0);
+
+	if (edev->cb->set_locate)
+		edev->cb->set_locate(edev, ecomp, val);
+	return count;
+}
+
+static ssize_t get_component_type(struct class_device *cdev, char *buf)
+{
+	struct enclosure_component *ecomp = to_enclosure_component(cdev);
+
+	return snprintf(buf, 40, "%s\n", enclosure_type[ecomp->type]);
+}
+
+
+static struct class_device_attribute enclosure_component_attrs[] = {
+	__ATTR(fault, S_IRUGO | S_IWUSR, get_component_fault,
+	       set_component_fault),
+	__ATTR(status, S_IRUGO | S_IWUSR, get_component_status,
+	       set_component_status),
+	__ATTR(active, S_IRUGO | S_IWUSR, get_component_active,
+	       set_component_active),
+	__ATTR(locate, S_IRUGO | S_IWUSR, get_component_locate,
+	       set_component_locate),
+	__ATTR(type, S_IRUGO, get_component_type, NULL),
+	__ATTR_NULL
+};
+
+static struct class enclosure_component_class =  {
+	.name			= "enclosure_component",
+	.owner			= THIS_MODULE,
+	.class_dev_attrs	= enclosure_component_attrs,
+	.release		= enclosure_component_release,
+};
+
+static int __init enclosure_init(void)
+{
+	int err;
+
+	err = class_register(&enclosure_class);
+	if (err)
+		return err;
+	err = class_register(&enclosure_component_class);
+	if (err)
+		goto err_out;
+
+	return 0;
+ err_out:
+	class_unregister(&enclosure_class);
+
+	return err;
+}
+
+static void __exit enclosure_exit(void)
+{
+	class_unregister(&enclosure_component_class);
+	class_unregister(&enclosure_class);
+}
+
+module_init(enclosure_init);
+module_exit(enclosure_exit);
+
+MODULE_AUTHOR("James Bottomley");
+MODULE_DESCRIPTION("Enclosure Services");
+MODULE_LICENSE("GPL v2");

drivers/scsi/Kconfig

···
 	  say M here and read <file:Documentation/kbuild/modules.txt> and
 	  <file:Documentation/scsi/scsi.txt>. The module will be called ch.o.
 	  If unsure, say N.
-	
+
+config SCSI_ENCLOSURE
+	tristate "SCSI Enclosure Support"
+	depends on SCSI && ENCLOSURE_SERVICES
+	help
+	  Enclosures are devices sitting on or in SCSI backplanes that
+	  manage devices.  If you have a disk cage, the chances are that
+	  it has an enclosure device.  Selecting this option will just allow
+	  certain enclosure conditions to be reported and is not required.
 
 comment "Some SCSI devices (e.g. CD jukebox) support multiple LUNs"
 	depends on SCSI
···
   	help
 	  If you have a Western Digital WD93 SCSI controller on
 	  an SGI MIPS system, say Y.  Otherwise, say N.
-
-config SCSI_DECNCR
-	tristate "DEC NCR53C94 Scsi Driver"
-	depends on MACH_DECSTATION && SCSI && TC
-	help
-	  Say Y here to support the NCR53C94 SCSI controller chips on IOASIC
-	  based TURBOchannel DECstations and TURBOchannel PMAZ-A cards.
-
-config SCSI_DECSII
-	tristate "DEC SII Scsi Driver"
-	depends on MACH_DECSTATION && SCSI && 32BIT
 
 config BLK_DEV_3W_XXXX_RAID
 	tristate "3ware 5/6/7/8xxx ATA-RAID support"
···
 	  not allow targets to disconnect is not reasonable if there is more
 	  than 1 device on a SCSI bus. The normal answer therefore is N.
 
-config SCSI_MCA_53C9X
-	tristate "NCR MCA 53C9x SCSI support"
-	depends on MCA_LEGACY && SCSI && BROKEN_ON_SMP
-	help
-	  Some MicroChannel machines, notably the NCR 35xx line, use a SCSI
-	  controller based on the NCR 53C94.  This driver will allow use of
-	  the controller on the 3550, and very possibly others.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called mca_53c9x.
-
 config SCSI_PAS16
 	tristate "PAS16 SCSI support"
 	depends on ISA && SCSI
···
 	  To compile this driver as a module, choose M here: the
 	  module will be called gvp11.
 
-config CYBERSTORM_SCSI
-	tristate "CyberStorm SCSI support"
-	depends on ZORRO && SCSI
-	help
-	  If you have an Amiga with an original (MkI) Phase5 Cyberstorm
-	  accelerator board and the optional Cyberstorm SCSI controller,
-	  answer Y. Otherwise, say N.
-
-config CYBERSTORMII_SCSI
-	tristate "CyberStorm Mk II SCSI support"
-	depends on ZORRO && SCSI
-	help
-	  If you have an Amiga with a Phase5 Cyberstorm MkII accelerator board
-	  and the optional Cyberstorm SCSI controller, say Y. Otherwise,
-	  answer N.
-
-config BLZ2060_SCSI
-	tristate "Blizzard 2060 SCSI support"
-	depends on ZORRO && SCSI
-	help
-	  If you have an Amiga with a Phase5 Blizzard 2060 accelerator board
-	  and want to use the onboard SCSI controller, say Y. Otherwise,
-	  answer N.
-
-config BLZ1230_SCSI
-	tristate "Blizzard 1230IV/1260 SCSI support"
-	depends on ZORRO && SCSI
-	help
-	  If you have an Amiga 1200 with a Phase5 Blizzard 1230IV or Blizzard
-	  1260 accelerator, and the optional SCSI module, say Y. Otherwise,
-	  say N.
-
-config FASTLANE_SCSI
-	tristate "Fastlane SCSI support"
-	depends on ZORRO && SCSI
-	help
-	  If you have the Phase5 Fastlane Z3 SCSI controller, or plan to use
-	  one in the near future, say Y to this question. Otherwise, say N.
-
 config SCSI_A4000T
 	tristate "A4000T NCR53c710 SCSI support (EXPERIMENTAL)"
 	depends on AMIGA && SCSI && EXPERIMENTAL
···
 	    - the SCSI controller on the Phase5 Blizzard PowerUP 603e+
 	      accelerator card for the Amiga 1200,
 	    - the SCSI controller on the GVP Turbo 040/060 accelerator.
-
-config OKTAGON_SCSI
-	tristate "BSC Oktagon SCSI support (EXPERIMENTAL)"
-	depends on ZORRO && SCSI && EXPERIMENTAL
-	help
-	  If you have the BSC Oktagon SCSI disk controller for the Amiga, say
-	  Y to this question.  If you're in doubt about whether you have one,
-	  see the picture at
-	  <http://amiga.resource.cx/exp/search.pl?product=oktagon>.
 
 config ATARI_SCSI
 	tristate "Atari native SCSI support"
···
 	  SCSI-HOWTO, available from
 	  <http://www.tldp.org/docs.html#howto>.
 
-config SCSI_MAC_ESP
-	tristate "Macintosh NCR53c9[46] SCSI"
-	depends on MAC && SCSI
-	help
-	  This is the NCR 53c9x SCSI controller found on most of the 68040
-	  based Macintoshes.  If you have one of these say Y and read the
-	  SCSI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called mac_esp.
-
 config MVME147_SCSI
 	bool "WD33C93 SCSI driver for MVME147"
 	depends on MVME147 && SCSI=y
···
 config SUN3X_ESP
 	bool "Sun3x ESP SCSI"
 	depends on SUN3X && SCSI=y
+	select SCSI_SPI_ATTRS
 	help
 	  The ESP was an on-board SCSI controller used on Sun 3/80
 	  machines.  Say Y here to compile in support for it.

drivers/scsi/Makefile

···
 obj-$(CONFIG_GVP11_SCSI)	+= gvp11.o	wd33c93.o
 obj-$(CONFIG_MVME147_SCSI)	+= mvme147.o	wd33c93.o
 obj-$(CONFIG_SGIWD93_SCSI)	+= sgiwd93.o	wd33c93.o
-obj-$(CONFIG_CYBERSTORM_SCSI)	+= NCR53C9x.o	cyberstorm.o
-obj-$(CONFIG_CYBERSTORMII_SCSI)	+= NCR53C9x.o	cyberstormII.o
-obj-$(CONFIG_BLZ2060_SCSI)	+= NCR53C9x.o	blz2060.o
-obj-$(CONFIG_BLZ1230_SCSI)	+= NCR53C9x.o	blz1230.o
-obj-$(CONFIG_FASTLANE_SCSI)	+= NCR53C9x.o	fastlane.o
-obj-$(CONFIG_OKTAGON_SCSI)	+= NCR53C9x.o	oktagon_esp_mod.o
 obj-$(CONFIG_ATARI_SCSI)	+= atari_scsi.o
 obj-$(CONFIG_MAC_SCSI)		+= mac_scsi.o
-obj-$(CONFIG_SCSI_MAC_ESP)	+= mac_esp.o	NCR53C9x.o
 obj-$(CONFIG_SUN3_SCSI)		+= sun3_scsi.o  sun3_scsi_vme.o
 obj-$(CONFIG_MVME16x_SCSI)	+= 53c700.o	mvme16x_scsi.o
 obj-$(CONFIG_BVME6000_SCSI)	+= 53c700.o	bvme6000_scsi.o
···
 obj-$(CONFIG_SCSI_ZALON)	+= zalon7xx.o
 obj-$(CONFIG_SCSI_EATA_PIO)	+= eata_pio.o
 obj-$(CONFIG_SCSI_7000FASST)	+= wd7000.o
-obj-$(CONFIG_SCSI_MCA_53C9X)	+= NCR53C9x.o	mca_53c9x.o
 obj-$(CONFIG_SCSI_IBMMCA)	+= ibmmca.o
 obj-$(CONFIG_SCSI_EATA)		+= eata.o
 obj-$(CONFIG_SCSI_DC395x)	+= dc395x.o
···
 obj-$(CONFIG_BLK_DEV_IDESCSI)	+= ide-scsi.o
 obj-$(CONFIG_SCSI_MESH)		+= mesh.o
 obj-$(CONFIG_SCSI_MAC53C94)	+= mac53c94.o
-obj-$(CONFIG_SCSI_DECNCR)	+= NCR53C9x.o	dec_esp.o
 obj-$(CONFIG_BLK_DEV_3W_XXXX_RAID) += 3w-xxxx.o
 obj-$(CONFIG_SCSI_3W_9XXX)	+= 3w-9xxx.o
 obj-$(CONFIG_SCSI_PPA)		+= ppa.o
 obj-$(CONFIG_SCSI_IMM)		+= imm.o
 obj-$(CONFIG_JAZZ_ESP)		+= esp_scsi.o	jazz_esp.o
-obj-$(CONFIG_SUN3X_ESP)		+= NCR53C9x.o	sun3x_esp.o
+obj-$(CONFIG_SUN3X_ESP)		+= esp_scsi.o	sun3x_esp.o
 obj-$(CONFIG_SCSI_LASI700)	+= 53c700.o lasi700.o
 obj-$(CONFIG_SCSI_SNI_53C710)	+= 53c700.o sni_53c710.o
 obj-$(CONFIG_SCSI_NSP32)	+= nsp32.o
···
 obj-$(CONFIG_BLK_DEV_SR)	+= sr_mod.o
 obj-$(CONFIG_CHR_DEV_SG)	+= sg.o
 obj-$(CONFIG_CHR_DEV_SCH)	+= ch.o
+obj-$(CONFIG_SCSI_ENCLOSURE)	+= ses.o
 
 # This goes last, so that "real" scsi devices probe earlier
 obj-$(CONFIG_SCSI_DEBUG)	+= scsi_debug.o

drivers/scsi/NCR53C9x.c

···
-/* NCR53C9x.c:  Generic SCSI driver code for NCR53C9x chips.
- *
- * Originally esp.c : EnhancedScsiProcessor Sun SCSI driver code.
- *
- * Copyright (C) 1995, 1998 David S. Miller ([e-mail])
- *
- * Most DMA dependencies put in driver specific files by 
- * Jesper Skov ([e-mail])
- *
- * Set up to use esp_read/esp_write (preprocessor macros in NCR53c9x.h) by
- * Tymm Twillman ([e-mail])
- */
-
-/* TODO:
- *
- * 1) Maybe disable parity checking in config register one for SCSI1
- *    targets.  (Gilmore says parity error on the SBus can lock up
- *    old sun4c's)
- * 2) Add support for DMA2 pipelining.
- * 3) Add tagged queueing.
- * 4) Maybe change use of "esp" to something more "NCR"'ish.
- */
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-/* Command phase enumeration. */
-enum {
-	not_issued    = 0x00,  /* Still in the issue_SC queue.          */
-
-	/* Various forms of selecting a target. */
-#define in_slct_mask    0x10
-	in_slct_norm  = 0x10,  /* ESP is arbitrating, normal selection  */
-	in_slct_stop  = 0x11,  /* ESP will select, then stop with IRQ   */
-	in_slct_msg   = 0x12,  /* select, then send a message           */
-	in_slct_tag   = 0x13,  /* select and send tagged queue msg      */
-	in_slct_sneg  = 0x14,  /* select and acquire sync capabilities  */
-
-	/* Any post selection activity. */
-#define in_phases_mask  0x20
-	in_datain     = 0x20,  /* Data is transferring from the bus     */
-	in_dataout    = 0x21,  /* Data is transferring to the bus       */
-	in_data_done  = 0x22,  /* Last DMA data operation done (maybe)  */
-	in_msgin      = 0x23,  /* Eating message from target            */
-	in_msgincont  = 0x24,  /* Eating more msg bytes from target     */
-	in_msgindone  = 0x25,  /* Decide what to do with what we got    */
-	in_msgout     = 0x26,  /* Sending message to target             */
-	in_msgoutdone = 0x27,  /* Done sending msg out                  */
-	in_cmdbegin   = 0x28,  /* Sending cmd after abnormal selection  */
-	in_cmdend     = 0x29,  /* Done sending slow cmd                 */
-	in_status     = 0x2a,  /* Was in status phase, finishing cmd    */
-	in_freeing    = 0x2b,  /* freeing the bus for cmd cmplt or disc */
-	in_the_dark   = 0x2c,  /* Don't know what bus phase we are in   */
-
-	/* Special states, ie. not normal bus transitions... */
-#define in_spec_mask    0x80
-	in_abortone   = 0x80,  /* Aborting one command currently        */
-	in_abortall   = 0x81,  /* Blowing away all commands we have     */
-	in_resetdev   = 0x82,  /* SCSI target reset in progress         */
-	in_resetbus   = 0x83,  /* SCSI bus reset in progress            */
-	in_tgterror   = 0x84,  /* Target did something stupid           */
-};
-
-enum {
-	/* Zero has special meaning, see skipahead[12]. */
-/*0*/	do_never,
-
-/*1*/	do_phase_determine,
-/*2*/	do_reset_bus,
-/*3*/	do_reset_complete,
-/*4*/	do_work_bus,
-/*5*/	do_intr_end
-};
-
-/* The master ring of all esp hosts we are managing in this driver. */
-static struct NCR_ESP *espchain;
-int nesps = 0, esps_in_use = 0, esps_running = 0;
-EXPORT_SYMBOL(nesps);
-EXPORT_SYMBOL(esps_running);
-
-irqreturn_t esp_intr(int irq, void *dev_id);
-
-/* Debugging routines */
-static struct esp_cmdstrings {
-	unchar cmdchar;
-	char *text;
-} esp_cmd_strings[] = {
-	/* Miscellaneous */
-	{ ESP_CMD_NULL, "ESP_NOP", },
-	{ ESP_CMD_FLUSH, "FIFO_FLUSH", },
-	{ ESP_CMD_RC, "RSTESP", },
-	{ ESP_CMD_RS, "RSTSCSI", },
-	/* Disconnected State Group */
-	{ ESP_CMD_RSEL, "RESLCTSEQ", },
-	{ ESP_CMD_SEL, "SLCTNATN", },
-	{ ESP_CMD_SELA, "SLCTATN", },
-	{ ESP_CMD_SELAS, "SLCTATNSTOP", },
-	{ ESP_CMD_ESEL, "ENSLCTRESEL", },
-	{ ESP_CMD_DSEL, "DISSELRESEL", },
-	{ ESP_CMD_SA3, "SLCTATN3", },
-	{ ESP_CMD_RSEL3, "RESLCTSEQ", },
-	/* Target State Group */
-	{ ESP_CMD_SMSG, "SNDMSG", },
-	{ ESP_CMD_SSTAT, "SNDSTATUS", },
-	{ ESP_CMD_SDATA, "SNDDATA", },
-	{ ESP_CMD_DSEQ, "DISCSEQ", },
-	{ ESP_CMD_TSEQ, "TERMSEQ", },
-	{ ESP_CMD_TCCSEQ, "TRGTCMDCOMPSEQ", },
-	{ ESP_CMD_DCNCT, "DISC", },
-	{ ESP_CMD_RMSG, "RCVMSG", },
-	{ ESP_CMD_RCMD, "RCVCMD", },
-	{ ESP_CMD_RDATA, "RCVDATA", },
-	{ ESP_CMD_RCSEQ, "RCVCMDSEQ", },
-	/* Initiator State Group */
-	{ ESP_CMD_TI, "TRANSINFO", },
-	{ ESP_CMD_ICCSEQ, "INICMDSEQCOMP", },
-	{ ESP_CMD_MOK, "MSGACCEPTED", },
-	{ ESP_CMD_TPAD, "TPAD", },
-	{ ESP_CMD_SATN, "SATN", },
-	{ ESP_CMD_RATN, "RATN", },
-};
-#define NUM_ESP_COMMANDS  ((sizeof(esp_cmd_strings)) / (sizeof(struct esp_cmdstrings)))
-
-/* Print textual representation of an ESP command */
-static inline void esp_print_cmd(unchar espcmd)
-{
-	unchar dma_bit = espcmd & ESP_CMD_DMA;
-	int i;
-
-	espcmd &= ~dma_bit;
-	for(i=0; i<NUM_ESP_COMMANDS; i++)
-		if(esp_cmd_strings[i].cmdchar == espcmd)
-			break;
-	if(i==NUM_ESP_COMMANDS)
-		printk("ESP_Unknown");
-	else
-		printk("%s%s", esp_cmd_strings[i].text,
-		       ((dma_bit) ? "+DMA" : ""));
-}
-
-/* Print the status register's value */
-static inline void esp_print_statreg(unchar statreg)
-{
-	unchar phase;
-
-	printk("STATUS<");
-	phase = statreg & ESP_STAT_PMASK;
-	printk("%s,", (phase == ESP_DOP ? "DATA-OUT" :
-		       (phase == ESP_DIP ? "DATA-IN" :
-			(phase == ESP_CMDP ? "COMMAND" :
-			 (phase == ESP_STATP ? "STATUS" :
-			  (phase == ESP_MOP ? "MSG-OUT" :
-			   (phase == ESP_MIP ? "MSG_IN" :
-			    "unknown")))))));
-	if(statreg & ESP_STAT_TDONE)
-		printk("TRANS_DONE,");
-	if(statreg & ESP_STAT_TCNT)
-		printk("TCOUNT_ZERO,");
-	if(statreg & ESP_STAT_PERR)
-		printk("P_ERROR,");
-	if(statreg & ESP_STAT_SPAM)
-		printk("SPAM,");
-	if(statreg & ESP_STAT_INTR)
-		printk("IRQ,");
-	printk(">");
-}
-
-/* Print the interrupt register's value */
-static inline void esp_print_ireg(unchar intreg)
-{
-	printk("INTREG< ");
-	if(intreg & ESP_INTR_S)
-		printk("SLCT_NATN ");
-	if(intreg & ESP_INTR_SATN)
-		printk("SLCT_ATN ");
-	if(intreg & ESP_INTR_RSEL)
-		printk("RSLCT ");
-	if(intreg & ESP_INTR_FDONE)
-		printk("FDONE ");
-	if(intreg & ESP_INTR_BSERV)
-		printk("BSERV ");
-	if(intreg & ESP_INTR_DC)
-		printk("DISCNCT ");
-	if(intreg & ESP_INTR_IC)
-		printk("ILL_CMD ");
-	if(intreg & ESP_INTR_SR)
-		printk("SCSI_BUS_RESET ");
-	printk(">");
-}
-
-/* Print the sequence step registers contents */
-static inline void esp_print_seqreg(unchar stepreg)
-{
-	stepreg &= ESP_STEP_VBITS;
-	printk("STEP<%s>",
-	       (stepreg == ESP_STEP_ASEL ? "SLCT_ARB_CMPLT" :
-		(stepreg == ESP_STEP_SID ? "1BYTE_MSG_SENT" :
-		 (stepreg == ESP_STEP_NCMD ? "NOT_IN_CMD_PHASE" :
-		  (stepreg == ESP_STEP_PPC ? "CMD_BYTES_LOST" :
-		   (stepreg == ESP_STEP_FINI4 ? "CMD_SENT_OK" :
-		    "UNKNOWN"))))));
-}
-
-static char *phase_string(int phase)
-{
-	switch(phase) {
-	case not_issued:
-		return "UNISSUED";
-	case in_slct_norm:
-		return "SLCTNORM";
-	case in_slct_stop:
-		return "SLCTSTOP";
-	case in_slct_msg:
-		return "SLCTMSG";
-	case in_slct_tag:
-		return "SLCTTAG";
-	case in_slct_sneg:
-		return "SLCTSNEG";
-	case in_datain:
-		return "DATAIN";
-	case in_dataout:
-		return "DATAOUT";
-	case in_data_done:
-		return "DATADONE";
-	case in_msgin:
-		return "MSGIN";
-	case in_msgincont:
-		return "MSGINCONT";
-	case in_msgindone:
-		return "MSGINDONE";
-	case in_msgout:
-		return "MSGOUT";
-	case in_msgoutdone:
-		return "MSGOUTDONE";
-	case in_cmdbegin:
-		return "CMDBEGIN";
-	case in_cmdend:
-		return "CMDEND";
-	case in_status:
-		return "STATUS";
-	case in_freeing:
-		return "FREEING";
-	case in_the_dark:
-		return "CLUELESS";
-	case in_abortone:
-		return "ABORTONE";
-	case in_abortall:
-		return "ABORTALL";
-	case in_resetdev:
-		return "RESETDEV";
-	case in_resetbus:
-		return "RESETBUS";
-	case in_tgterror:
-		return "TGTERROR";
-	default:
-		return "UNKNOWN";
-	};
-}
-
-#ifdef DEBUG_STATE_MACHINE
-static inline void esp_advance_phase(Scsi_Cmnd *s, int newphase)
-{
-	ESPLOG(("<%s>", phase_string(newphase)));
-	s->SCp.sent_command = s->SCp.phase;
-	s->SCp.phase = newphase;
-}
-#else
-#define esp_advance_phase(__s, __newphase) \
-	(__s)->SCp.sent_command = (__s)->SCp.phase; \
-	(__s)->SCp.phase = (__newphase);
-#endif
-
-#ifdef DEBUG_ESP_CMDS
-static inline void esp_cmd(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			   unchar cmd)
-{
-	esp->espcmdlog[esp->espcmdent] = cmd;
-	esp->espcmdent = (esp->espcmdent + 1) & 31;
-	esp_write(eregs->esp_cmnd, cmd);
-}
-#else
-#define esp_cmd(__esp, __eregs, __cmd)	esp_write((__eregs)->esp_cmnd, (__cmd))
-#endif
-
-/* How we use the various Linux SCSI data structures for operation.
- *
- * struct scsi_cmnd:
- *
- *   We keep track of the syncronous capabilities of a target
- *   in the device member, using sync_min_period and
- *   sync_max_offset.  These are the values we directly write
- *   into the ESP registers while running a command.  If offset
- *   is zero the ESP will use asynchronous transfers.
- *   If the borken flag is set we assume we shouldn't even bother
- *   trying to negotiate for synchronous transfer as this target
- *   is really stupid.  If we notice the target is dropping the
- *   bus, and we have been allowing it to disconnect, we clear
- *   the disconnect flag.
- */
-
-/* Manipulation of the ESP command queues.  Thanks to the aha152x driver
- * and its author, Juergen E. Fischer, for the methods used here.
- * Note that these are per-ESP queues, not global queues like
- * the aha152x driver uses.
- */
-static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
-	Scsi_Cmnd *end;
-
-	new_SC->host_scribble = (unsigned char *) NULL;
-	if(!*SC)
-		*SC = new_SC;
-	else {
-		for(end=*SC;end->host_scribble;end=(Scsi_Cmnd *)end->host_scribble)
-			;
-		end->host_scribble = (unsigned char *) new_SC;
-	}
-}
-
-static inline void prepend_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
-	new_SC->host_scribble = (unsigned char *) *SC;
-	*SC = new_SC;
-}
-
-static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd **SC)
-{
-	Scsi_Cmnd *ptr;
-
-	ptr = *SC;
-	if(ptr)
-		*SC = (Scsi_Cmnd *) (*SC)->host_scribble;
-	return ptr;
-}
-
-static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, int target, int lun)
-{
-	Scsi_Cmnd *ptr, *prev;
-
-	for(ptr = *SC, prev = NULL;
-	    ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
-	    prev = ptr, ptr = (Scsi_Cmnd *) ptr->host_scribble)
-		;
-	if(ptr) {
-		if(prev)
-			prev->host_scribble=ptr->host_scribble;
-		else
-			*SC=(Scsi_Cmnd *)ptr->host_scribble;
-	}
-	return ptr;
-}
-
-/* Resetting various pieces of the ESP scsi driver chipset */
-
-/* Reset the ESP chip, _not_ the SCSI bus. */
-static void esp_reset_esp(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int family_code, version, i;
-	volatile int trash;
-
-	/* Now reset the ESP chip */
-	esp_cmd(esp, eregs, ESP_CMD_RC);
-	esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
-	if(esp->erev == fast)
-		esp_write(eregs->esp_cfg2, ESP_CONFIG2_FENAB);
-	esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
-
-	/* This is the only point at which it is reliable to read
-	 * the ID-code for a fast ESP chip variant.
-	 */
-	esp->max_period = ((35 * esp->ccycle) / 1000);
-	if(esp->erev == fast) {
-		char *erev2string[] = {
-			"Emulex FAS236",
-			"Emulex FPESP100A",
-			"fast",
-			"QLogic FAS366",
-			"Emulex FAS216",
-			"Symbios Logic 53CF9x-2",
-			"unknown!"
-		};
-			
-		version = esp_read(eregs->esp_uid);
-		family_code = (version & 0xf8) >> 3;
-		if(family_code == 0x02) {
-		        if ((version & 7) == 2)
-			        esp->erev = fas216;	
-                        else
-			        esp->erev = fas236;
-		} else if(family_code == 0x0a)
-			esp->erev = fas366; /* Version is usually '5'. */
-		else if(family_code == 0x00) {
-			if ((version & 7) == 2)
-				esp->erev = fas100a; /* NCR53C9X */
-			else
-				esp->erev = espunknown;
-		} else if(family_code == 0x14) {
-			if ((version & 7) == 2)
-				esp->erev = fsc;
-		        else
-				esp->erev = espunknown;
-		} else if(family_code == 0x00) {
-			if ((version & 7) == 2)
-				esp->erev = fas100a; /* NCR53C9X */
-			else
-				esp->erev = espunknown;
-		} else
-			esp->erev = espunknown;
-		ESPLOG(("esp%d: FAST chip is %s (family=%d, version=%d)\n",
-			esp->esp_id, erev2string[esp->erev - fas236],
-			family_code, (version & 7)));
-
-		esp->min_period = ((4 * esp->ccycle) / 1000);
-	} else {
-		esp->min_period = ((5 * esp->ccycle) / 1000);
-	}
-
-	/* Reload the configuration registers */
-	esp_write(eregs->esp_cfact, esp->cfact);
-	esp->prev_stp = 0;
-	esp_write(eregs->esp_stp, 0);
-	esp->prev_soff = 0;
-	esp_write(eregs->esp_soff, 0);
-	esp_write(eregs->esp_timeo, esp->neg_defp);
-	esp->max_period = (esp->max_period + 3)>>2;
-	esp->min_period = (esp->min_period + 3)>>2;
-
-	esp_write(eregs->esp_cfg1, esp->config1);
-	switch(esp->erev) {
-	case esp100:
-		/* nothing to do */
-		break;
-	case esp100a:
-		esp_write(eregs->esp_cfg2, esp->config2);
-		break;
-	case esp236:
-		/* Slow 236 */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		break;
-	case fas366:
-		panic("esp: FAS366 support not present, please notify "
-		      "[e-mail]");
-		break;
-	case fas216:
-	case fas236:
-	case fsc:
-		/* Fast ESP variants */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		for(i=0; i<8; i++)
-			esp->config3[i] |= ESP_CONFIG3_FCLK;
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		if(esp->diff)
-			esp->radelay = 0;
-		else
-			esp->radelay = 16;
-		/* Different timeout constant for these chips */
-		esp->neg_defp =
-			FSC_NEG_DEFP(esp->cfreq,
-				     (esp->cfact == ESP_CCF_F0 ?
-				      ESP_CCF_F7 + 1 : esp->cfact));
-		esp_write(eregs->esp_timeo, esp->neg_defp);
-		/* Enable Active Negotiation if possible */
-		if((esp->erev == fsc) && !esp->diff)
-			esp_write(eregs->esp_cfg4, ESP_CONFIG4_EAN);
-		break;
-	case fas100a:
-		/* Fast 100a */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		for(i=0; i<8; i++)
-			esp->config3[i] |= ESP_CONFIG3_FCLOCK;
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		esp->radelay = 32;
-		break;
-	default:
-		panic("esp: what could it be... I wonder...");
-		break;
-	};
-
-	/* Eat any bitrot in the chip */
-	trash = esp_read(eregs->esp_intrpt);
-	udelay(100);
-}
-
-/* This places the ESP into a known state at boot time. */
-void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	volatile unchar trash;
-
-	/* Reset the DMA */
-	if(esp->dma_reset)
-		esp->dma_reset(esp);
-
-	/* Reset the ESP */
-	esp_reset_esp(esp, eregs);
-
-	/* Reset the SCSI bus, but tell ESP not to generate an irq */
-	esp_write(eregs->esp_cfg1, (esp_read(eregs->esp_cfg1) | ESP_CONFIG1_SRRDISAB));
-	esp_cmd(esp, eregs, ESP_CMD_RS);
-	udelay(400);
-	esp_write(eregs->esp_cfg1, esp->config1);
-
-	/* Eat any bitrot in the chip and we are done... */
-	trash = esp_read(eregs->esp_intrpt);
-}
-EXPORT_SYMBOL(esp_bootup_reset);
-
-/* Allocate structure and insert basic data such as SCSI chip frequency
- * data and a pointer to the device
- */
-struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev,
-			     int hotplug)
-{
-	struct NCR_ESP *esp, *elink;
-	struct Scsi_Host *esp_host;
-
-	if (hotplug)
-		esp_host = scsi_host_alloc(tpnt, sizeof(struct NCR_ESP));
-	else
-		esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
-	if(!esp_host)
-		panic("Cannot register ESP SCSI host");
-	esp = (struct NCR_ESP *) esp_host->hostdata;
-	if(!esp)
-		panic("No esp in hostdata");
-	esp->ehost = esp_host;
-	esp->edev = esp_dev;
-	esp->esp_id = nesps++;
-
-	/* Set bitshift value (only used on Amiga with multiple ESPs) */
-	esp->shift = 2;
-
-	/* Put into the chain of esp chips detected */
-	if(espchain) {
-		elink = espchain;
-		while(elink->next) elink = elink->next;
-		elink->next = esp;
-	} else {
-		espchain = esp;
-	}
-	esp->next = NULL;
-
-	return esp;
-}
-
-void esp_deallocate(struct NCR_ESP *esp)
-{
-	struct NCR_ESP *elink;
-
-	if(espchain == esp) {
-		espchain = NULL;
-	} else {
-		for(elink = espchain; elink && (elink->next != esp); elink = elink->next);
-		if(elink) 
-			elink->next = esp->next;
-	}
-	nesps--;
-}
-
-/* Complete initialization of ESP structure and device
- * Caller must have initialized appropriate parts of the ESP structure
- * between the call to esp_allocate and this function.
- */
-void esp_initialize(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs = esp->eregs;
-	unsigned int fmhz;
-	unchar ccf;
-	int i;
-	
-	/* Check out the clock properties of the chip. */
-
-	/* This is getting messy but it has to be done
-	 * correctly or else you get weird behavior all
-	 * over the place.  We are trying to basically
-	 * figure out three pieces of information.
-	 *
-	 * a) Clock Conversion Factor
-	 *
-	 *    This is a representation of the input
-	 *    crystal clock frequency going into the
-	 *    ESP on this machine.  Any operation whose
-	 *    timing is longer than 400ns depends on this
-	 *    value being correct.  For example, you'll
-	 *    get blips for arbitration/selection during
-	 *    high load or with multiple targets if this
-	 *    is not set correctly.
-	 *
-	 * b) Selection Time-Out
-	 *
-	 *    The ESP isn't very bright and will arbitrate
-	 *    for the bus and try to select a target
-	 *    forever if you let it.  This value tells
-	 *    the ESP when it has taken too long to
-	 *    negotiate and that it should interrupt
-	 *    the CPU so we can see what happened.
-	 *    The value is computed as follows (from
-	 *    NCR/Symbios chip docs).
-	 *
-	 *          (Time Out Period) *  (Input Clock)
-	 *    STO = ----------------------------------
-	 *          (8192) * (Clock Conversion Factor)
-	 *
-	 *    You usually want the time out period to be
-	 *    around 250ms, I think we'll set it a little
-	 *    bit higher to account for fully loaded SCSI
-	 *    bus's and slow devices that don't respond so
-	 *    quickly to selection attempts. (yeah, I know
-	 *    this is out of spec. but there is a lot of
-	 *    buggy pieces of firmware out there so bite me)
-	 *
-	 * c) Imperical constants for synchronous offset
-	 *    and transfer period register values
-	 *
-	 *    This entails the smallest and largest sync
-	 *    period we could ever handle on this ESP.
-	 */
-	
-	fmhz = esp->cfreq;
-
-	if(fmhz <= (5000000))
-		ccf = 0;
-	else
-		ccf = (((5000000 - 1) + (fmhz))/(5000000));
-	if(!ccf || ccf > 8) {
-		/* If we can't find anything reasonable,
-		 * just assume 20MHZ.  This is the clock
-		 * frequency of the older sun4c's where I've
-		 * been unable to find the clock-frequency
-		 * PROM property.  All other machines provide
-		 * useful values it seems.
-		 */
-		ccf = ESP_CCF_F4;
-		fmhz = (20000000);
-	}
-	if(ccf==(ESP_CCF_F7+1))
-		esp->cfact = ESP_CCF_F0;
-	else if(ccf == ESP_CCF_NEVER)
-		esp->cfact = ESP_CCF_F2;
-	else
-		esp->cfact = ccf;
-	esp->cfreq = fmhz;
-	esp->ccycle = ESP_MHZ_TO_CYCLE(fmhz);
-	esp->ctick = ESP_TICK(ccf, esp->ccycle);
-	esp->neg_defp = ESP_NEG_DEFP(fmhz, ccf);
-	esp->sync_defp = SYNC_DEFP_SLOW;
-
-	printk("SCSI ID %d Clk %dMHz CCF=%d TOut %d ",
-	       esp->scsi_id, (esp->cfreq / 1000000),
-	       ccf, (int) esp->neg_defp);
-
-	/* Fill in ehost data */
-	esp->ehost->base = (unsigned long)eregs;
-	esp->ehost->this_id = esp->scsi_id;
-	esp->ehost->irq = esp->irq;
-
-	/* SCSI id mask */
-	esp->scsi_id_mask = (1 << esp->scsi_id);
-
-	/* Probe the revision of this esp */
-	esp->config1 = (ESP_CONFIG1_PENABLE | (esp->scsi_id & 7));
-	esp->config2 = (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY);
-	esp_write(eregs->esp_cfg2, esp->config2);
-	if((esp_read(eregs->esp_cfg2) & ~(ESP_CONFIG2_MAGIC)) !=
-	   (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY)) {
-		printk("NCR53C90(esp100)\n");
-		esp->erev = esp100;
-	} else {
-		esp->config2 = 0;
-		esp_write(eregs->esp_cfg2, 0);
-		esp_write(eregs->esp_cfg3, 5);
-		if(esp_read(eregs->esp_cfg3) != 5) {
-			printk("NCR53C90A(esp100a)\n");
-			esp->erev = esp100a;
-		} else {
-			int target;
-
-			for(target=0; target<8; target++)
-				esp->config3[target] = 0;
-			esp->prev_cfg3 = 0;
-			esp_write(eregs->esp_cfg3, 0);
-			if(ccf > ESP_CCF_F5) {
-				printk("NCR53C9XF(espfast)\n");
-				esp->erev = fast;
-				esp->sync_defp = SYNC_DEFP_FAST;
-			} else {
-				printk("NCR53C9x(esp236)\n");
-				esp->erev = esp236;
-			}
-		}
-	}				
-
-	/* Initialize the command queues */
-	esp->current_SC = NULL;
-	esp->disconnected_SC = NULL;
-	esp->issue_SC = NULL;
-
-	/* Clear the state machines. */
-	esp->targets_present = 0;
-	esp->resetting_bus = 0;
-	esp->snip = 0;
-
-	init_waitqueue_head(&esp->reset_queue);
-
-	esp->fas_premature_intr_workaround = 0;
-	for(i = 0; i < 32; i++)
-		esp->espcmdlog[i] = 0;
-	esp->espcmdent = 0;
-	for(i = 0; i < 16; i++) {
-		esp->cur_msgout[i] = 0;
-		esp->cur_msgin[i] = 0;
-	}
-	esp->prevmsgout = esp->prevmsgin = 0;
-	esp->msgout_len = esp->msgin_len = 0;
-
-	/* Clear the one behind caches to hold unmatchable values. */
-	esp->prev_soff = esp->prev_stp = esp->prev_cfg3 = 0xff;
-
-	/* Reset the thing before we try anything... */
-	esp_bootup_reset(esp, eregs);
-
-	esps_in_use++;
-}
-
-/* The info function will return whatever useful
- * information the developer sees fit.  If not provided, then
- * the name field will be used instead.
- */
-const char *esp_info(struct Scsi_Host *host)
-{
-	struct NCR_ESP *esp;
-
-	esp = (struct NCR_ESP *) host->hostdata;
-	switch(esp->erev) {
-	case esp100:
-		return "ESP100 (NCR53C90)";
-	case esp100a:
-		return "ESP100A (NCR53C90A)";
-	case esp236:
-		return "ESP236 (NCR53C9x)";
-	case fas216:
-		return "Emulex FAS216";
-	case fas236:
-		return "Emulex FAS236";
-	case fas366:
-		return "QLogic FAS366";
-	case fas100a:
-		return "FPESP100A";
-	case fsc:
-		return "Symbios Logic 53CF9x-2";
-	default:
-		panic("Bogon ESP revision");
-	};
-}
-EXPORT_SYMBOL(esp_info);
-
-/* From Wolfgang Stanglmeier's NCR scsi driver. */
-struct info_str
-{
-	char *buffer;
-	int length;
-	int offset;
-	int pos;
-};
-
-static void copy_mem_info(struct info_str *info, char *data, int len)
-{
-	if (info->pos + len > info->length)
-		len = info->length - info->pos;
-
-	if (info->pos + len < info->offset) {
-		info->pos += len;
-		return;
-	}
-	if (info->pos < info->offset) {
-		data += (info->offset - info->pos);
-		len  -= (info->offset - info->pos);
-	}
-
-	if (len > 0) {
-		memcpy(info->buffer + info->pos, data, len);
-		info->pos += len;
-	}
-}
-
-static int copy_info(struct info_str *info, char *fmt, ...)
-{
-	va_list args;
-	char buf[81];
-	int len;
-
-	va_start(args, fmt);
-	len = vsprintf(buf, fmt, args);
-	va_end(args);
-
-	copy_mem_info(info, buf, len);
-	return len;
-}
-
-static int esp_host_info(struct NCR_ESP *esp, char *ptr, off_t offset, int len)
-{
-	struct scsi_device *sdev;
-	struct info_str info;
-	int i;
-
-	info.buffer	= ptr;
-	info.length	= len;
-	info.offset	= offset;
-	info.pos	= 0;
-
-	copy_info(&info, "ESP Host Adapter:\n");
-	copy_info(&info, "\tESP Model\t\t");
-	switch(esp->erev) {
-	case esp100:
-		copy_info(&info, "ESP100 (NCR53C90)\n");
-		break;
-	case esp100a:
-		copy_info(&info, "ESP100A (NCR53C90A)\n");
-		break;
-	case esp236:
-		copy_info(&info, "ESP236 (NCR53C9x)\n");
-		break;
-	case fas216:
-		copy_info(&info, "Emulex FAS216\n");
-		break;
-	case fas236:
-		copy_info(&info, "Emulex FAS236\n");
-		break;
-	case fas100a:
-		copy_info(&info, "FPESP100A\n");
-		break;
-	case fast:
-		copy_info(&info, "Generic FAST\n");
-		break;
-	case fas366:
-		copy_info(&info, "QLogic FAS366\n");
-		break;
-	case fsc:
-		copy_info(&info, "Symbios Logic 53C9x-2\n");
-		break;
-	case espunknown:
-	default:
-		copy_info(&info, "Unknown!\n");
-		break;
-	};
-	copy_info(&info, "\tLive Targets\t\t[ ");
-	for(i = 0; i < 15; i++) {
-		if(esp->targets_present & (1 << i))
-			copy_info(&info, "%d ", i);
-	}
-	copy_info(&info, "]\n\n");
-	
-	/* Now describe the state of each existing target. */
-	copy_info(&info, "Target #\tconfig3\t\tSync Capabilities\tDisconnect\n");
-
-	shost_for_each_device(sdev, esp->ehost) {
-		struct esp_device *esp_dev = sdev->hostdata;
-		uint id = sdev->id;
-
-		if (!(esp->targets_present & (1 << id)))
-			continue;
-
-		copy_info(&info, "%d\t\t", id);
-		copy_info(&info, "%08lx\t", esp->config3[id]);
-		copy_info(&info, "[%02lx,%02lx]\t\t\t",
-			esp_dev->sync_max_offset,
-			esp_dev->sync_min_period);
-		copy_info(&info, "%s\n", esp_dev->disconnect ? "yes" : "no");
-	}
-
-	return info.pos > info.offset? info.pos - info.offset : 0;
-}
-
-/* ESP proc filesystem code. */
-int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
-		  int inout)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *)shost->hostdata;
-
-	if(inout)
-		return -EINVAL; /* not yet */
-	if(start)
-		*start = buffer;
-	return esp_host_info(esp, buffer, offset, length);
-}
-EXPORT_SYMBOL(esp_proc_info);
-
-static void esp_get_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(sp->use_sg == 0) {
-		sp->SCp.this_residual = sp->request_bufflen;
-		sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
-		sp->SCp.buffers_residual = 0;
-		if (esp->dma_mmu_get_scsi_one)
-			esp->dma_mmu_get_scsi_one(esp, sp);
-		else
-			sp->SCp.ptr =
-				(char *) virt_to_phys(sp->request_buffer);
-	} else {
-		sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
-		sp->SCp.buffers_residual = sp->use_sg - 1;
-		sp->SCp.this_residual = sp->SCp.buffer->length;
-		if (esp->dma_mmu_get_scsi_sgl)
-			esp->dma_mmu_get_scsi_sgl(esp, sp);
-		else
-			sp->SCp.ptr =
-				(char *) virt_to_phys(sg_virt(sp->SCp.buffer));
-	}
-}
-
-static void esp_release_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(sp->use_sg == 0) {
-		if (esp->dma_mmu_release_scsi_one)
-			esp->dma_mmu_release_scsi_one(esp, sp);
-	} else {
-		if (esp->dma_mmu_release_scsi_sgl)
-			esp->dma_mmu_release_scsi_sgl(esp, sp);
-	}
-}
-
-static void esp_restore_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
-	sp->SCp.ptr = ep->saved_ptr;
-	sp->SCp.buffer = ep->saved_buffer;
-	sp->SCp.this_residual = ep->saved_this_residual;
-	sp->SCp.buffers_residual = ep->saved_buffers_residual;
-}
-
-static void esp_save_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
-	ep->saved_ptr = sp->SCp.ptr;
-	ep->saved_buffer = sp->SCp.buffer;
-	ep->saved_this_residual = sp->SCp.this_residual;
-	ep->saved_buffers_residual = sp->SCp.buffers_residual;
-}
-
-/* Some rules:
- *
- *   1) Never ever panic while something is live on the bus.
- *      If there is to be any chance of syncing the disks this
- *      rule is to be obeyed.
- *
- *   2) Any target that causes a foul condition will no longer
- *      have synchronous transfers done to it, no questions
- *      asked.
- *
- *   3) Keep register accesses to a minimum.  Think about some
- *      day when we have Xbus machines this is running on and
- *      the ESP chip is on the other end of the machine on a
- *      different board from the cpu where this is running.
- */
-
-/* Fire off a command.  We assume the bus is free and that the only
- * case where we could see an interrupt is where we have disconnected
- * commands active and they are trying to reselect us.
- */
-static inline void esp_check_cmd(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	switch(sp->cmd_len) {
-	case 6:
-	case 10:
-	case 12:
-		esp->esp_slowcmd = 0;
-		break;
-
-	default:
-		esp->esp_slowcmd = 1;
-		esp->esp_scmdleft = sp->cmd_len;
-		esp->esp_scmdp = &sp->cmnd[0];
-		break;
-	};
-}
-
-static inline void build_sync_nego_msg(struct NCR_ESP *esp, int period, int offset)
-{
-	esp->cur_msgout[0] = EXTENDED_MESSAGE;
-	esp->cur_msgout[1] = 3;
-	esp->cur_msgout[2] = EXTENDED_SDTR;
-	esp->cur_msgout[3] = period;
-	esp->cur_msgout[4] = offset;
-	esp->msgout_len = 5;
-}
-
-static void esp_exec_cmd(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs = esp->eregs;
-	struct esp_device *esp_dev;
-	Scsi_Cmnd *SCptr;
-	struct scsi_device *SDptr;
-	volatile unchar *cmdp = esp->esp_command;
-	unsigned char the_esp_command;
-	int lun, target;
-	int i;
-
-	/* Hold off if we have disconnected commands and
-	 * an IRQ is showing...
-	 */
-	if(esp->disconnected_SC && esp->dma_irq_p(esp))
-		return;
-
-	/* Grab first member of the issue queue. */
-	SCptr = esp->current_SC = remove_first_SC(&esp->issue_SC);
-
-	/* Safe to panic here because current_SC is null. */
-	if(!SCptr)
-		panic("esp: esp_exec_cmd and issue queue is NULL");
-
-	SDptr = SCptr->device;
-	esp_dev = SDptr->hostdata;
-	lun = SCptr->device->lun;
-	target = SCptr->device->id;
-
-	esp->snip = 0;
-	esp->msgout_len = 0;
-
-	/* Send it out whole, or piece by piece?   The ESP
-	 * only knows how to automatically send out 6, 10,
-	 * and 12 byte commands.  I used to think that the
-	 * Linux SCSI code would never throw anything other
-	 * than that to us, but then again there is the
-	 * SCSI generic driver which can send us anything.
-	 */
-	esp_check_cmd(esp, SCptr);
-
-	/* If arbitration/selection is successful, the ESP will leave
-	 * ATN asserted, causing the target to go into message out
-	 * phase.  The ESP will feed the target the identify and then
-	 * the target can only legally go to one of command,
-	 * datain/out, status, or message in phase, or stay in message
-	 * out phase (should we be trying to send a sync negotiation
-	 * message after the identify).  It is not allowed to drop
-	 * BSY, but some buggy targets do and we check for this
-	 * condition in the selection complete code.  Most of the time
-	 * we'll make the command bytes available to the ESP and it
-	 * will not interrupt us until it finishes command phase, we
-	 * cannot do this for command sizes the ESP does not
-	 * understand and in this case we'll get interrupted right
-	 * when the target goes into command phase.
-	 *
-	 * It is absolutely _illegal_ in the presence of SCSI-2 devices
-	 * to use the ESP select w/o ATN command.  When SCSI-2 devices are
-	 * present on the bus we _must_ always go straight to message out
-	 * phase with an identify message for the target.  Being that
-	 * selection attempts in SCSI-1 w/o ATN was an option, doing SCSI-2
-	 * selections should not confuse SCSI-1 we hope.
-	 */
-
-	if(esp_dev->sync) {
-		/* this targets sync is known */
-#ifdef CONFIG_SCSI_MAC_ESP
-do_sync_known:
-#endif
-		if(esp_dev->disconnect)
-			*cmdp++ = IDENTIFY(1, lun);
-		else
-			*cmdp++ = IDENTIFY(0, lun);
-
-		if(esp->esp_slowcmd) {
-			the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
-			esp_advance_phase(SCptr, in_slct_stop);
-		} else {
-			the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
-			esp_advance_phase(SCptr, in_slct_norm);
-		}
-	} else if(!(esp->targets_present & (1<<target)) || !(esp_dev->disconnect)) {
-		/* After the bootup SCSI code sends both the
-		 * TEST_UNIT_READY and INQUIRY commands we want
-		 * to at least attempt allowing the device to
-		 * disconnect.
-		 */
-		ESPMISC(("esp: Selecting device for first time. target=%d "
-			 "lun=%d\n", target, SCptr->device->lun));
-		if(!SDptr->borken && !esp_dev->disconnect)
-			esp_dev->disconnect = 1;
-
-		*cmdp++ = IDENTIFY(0, lun);
-		esp->prevmsgout = NOP;
-		esp_advance_phase(SCptr, in_slct_norm);
-		the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
-
-		/* Take no chances... */
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-	} else {
-		int toshiba_cdrom_hwbug_wkaround = 0;
-
-#ifdef CONFIG_SCSI_MAC_ESP
-		/* Never allow synchronous transfers (disconnect OK) on
-		 * Macintosh. Well, maybe later when we figured out how to 
-		 * do DMA on the machines that support it ...
-		 */
-		esp_dev->disconnect = 1;
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-		esp_dev->sync = 1;
-		esp->snip = 0;
-		goto do_sync_known;
-#endif
-		/* We've talked to this guy before,
-		 * but never negotiated.  Let's try
-		 * sync negotiation.
-		 */
-		if(!SDptr->borken) {
-			if((SDptr->type == TYPE_ROM) &&
-			   (!strncmp(SDptr->vendor, "TOSHIBA", 7))) {
-				/* Nice try sucker... */
-				ESPMISC(("esp%d: Disabling sync for buggy "
-					 "Toshiba CDROM.\n", esp->esp_id));
-				toshiba_cdrom_hwbug_wkaround = 1;
-				build_sync_nego_msg(esp, 0, 0);
-			} else {
-				build_sync_nego_msg(esp, esp->sync_defp, 15);
-			}
-		} else {
-			build_sync_nego_msg(esp, 0, 0);
-		}
-		esp_dev->sync = 1;
-		esp->snip = 1;
-
-		/* A fix for broken SCSI1 targets, when they disconnect
-		 * they lock up the bus and confuse ESP.  So disallow
-		 * disconnects for SCSI1 targets for now until we
-		 * find a better fix.
-		 *
-		 * Addendum: This is funny, I figured out what was going
-		 *           on.  The blotzed SCSI1 target would disconnect,
-		 *           one of the other SCSI2 targets or both would be
-		 *           disconnected as well.  The SCSI1 target would
-		 *           stay disconnected long enough that we start
-		 *           up a command on one of the SCSI2 targets.  As
-		 *           the ESP is arbitrating for the bus the SCSI1
-		 *           target begins to arbitrate as well to reselect
-		 *           the ESP.  The SCSI1 target refuses to drop it's
-		 *           ID bit on the data bus even though the ESP is
-		 *           at ID 7 and is the obvious winner for any
-		 *           arbitration.  The ESP is a poor sport and refuses
-		 *           to lose arbitration, it will continue indefinitely
-		 *           trying to arbitrate for the bus and can only be
-		 *           stopped via a chip reset or SCSI bus reset.
-		 *           Therefore _no_ disconnects for SCSI1 targets
-		 *           thank you very much. ;-)
-		 */
-		if(((SDptr->scsi_level < 3) && (SDptr->type != TYPE_TAPE)) ||
-		   toshiba_cdrom_hwbug_wkaround || SDptr->borken) {
-			ESPMISC((KERN_INFO "esp%d: Disabling DISCONNECT for target %d "
-				 "lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
-			esp_dev->disconnect = 0;
-			*cmdp++ = IDENTIFY(0, lun);
-		} else {
-			*cmdp++ = IDENTIFY(1, lun);
-		}
-
-		/* ESP fifo is only so big...
-		 * Make this look like a slow command.
-		 */
-		esp->esp_slowcmd = 1;
-		esp->esp_scmdleft = SCptr->cmd_len;
-		esp->esp_scmdp = &SCptr->cmnd[0];
-
-		the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
-		esp_advance_phase(SCptr, in_slct_msg);
-	}
-
-	if(!esp->esp_slowcmd)
-		for(i = 0; i < SCptr->cmd_len; i++)
-			*cmdp++ = SCptr->cmnd[i];
-
-	esp_write(eregs->esp_busid, (target & 7));
-	if (esp->prev_soff != esp_dev->sync_max_offset ||
-	    esp->prev_stp  != esp_dev->sync_min_period ||
-	    (esp->erev > esp100a &&
-	     esp->prev_cfg3 != esp->config3[target])) {
-		esp->prev_soff = esp_dev->sync_max_offset;
-		esp_write(eregs->esp_soff, esp->prev_soff);
-		esp->prev_stp = esp_dev->sync_min_period;
-		esp_write(eregs->esp_stp, esp->prev_stp); 
-		if(esp->erev > esp100a) {
-			esp->prev_cfg3 = esp->config3[target];
-			esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		}
-	}
-	i = (cmdp - esp->esp_command);
-
-	/* Set up the DMA and ESP counters */
-	if(esp->do_pio_cmds){
-		int j = 0;
-
-		/* 
-		 * XXX MSch:
-		 *
-		 * It seems this is required, at least to clean up
-		 * after failed commands when using PIO mode ...
-		 */
-		esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-		for(;j<i;j++)
-			esp_write(eregs->esp_fdata, esp->esp_command[j]);
-		the_esp_command &= ~ESP_CMD_DMA;
-
-		/* Tell ESP to "go". */
-		esp_cmd(esp, eregs, the_esp_command);
-	} else {
-		/* Set up the ESP counters */
-		esp_write(eregs->esp_tclow, i);
-		esp_write(eregs->esp_tcmed, 0);
-		esp->dma_init_write(esp, esp->esp_command_dvma, i);
-
-		/* Tell ESP to "go". */
-		esp_cmd(esp, eregs, the_esp_command);
-	}
-}
-
-/* Queue a SCSI command delivered from the mid-level Linux SCSI code. */
-int esp_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
-{
-	struct NCR_ESP *esp;
-
-	/* Set up func ptr and initial driver cmd-phase. */
-	SCpnt->scsi_done = done;
-	SCpnt->SCp.phase = not_issued;
-
-	esp = (struct NCR_ESP *) SCpnt->device->host->hostdata;
-
-	if(esp->dma_led_on)
-		esp->dma_led_on(esp);
-
-	/* We use the scratch area. */
-	ESPQUEUE(("esp_queue: target=%d lun=%d ", SCpnt->device->id, SCpnt->lun));
-	ESPDISC(("N<%02x,%02x>", SCpnt->device->id, SCpnt->lun));
-
-	esp_get_dmabufs(esp, SCpnt);
-	esp_save_pointers(esp, SCpnt); /* FIXME for tag queueing */
-
-	SCpnt->SCp.Status           = CHECK_CONDITION;
-	SCpnt->SCp.Message          = 0xff;
-	SCpnt->SCp.sent_command     = 0;
-
-	/* Place into our queue. */
-	if(SCpnt->cmnd[0] == REQUEST_SENSE) {
-		ESPQUEUE(("RQSENSE\n"));
-		prepend_SC(&esp->issue_SC, SCpnt);
-	} else {
-		ESPQUEUE(("\n"));
-		append_SC(&esp->issue_SC, SCpnt);
-	}
-
-	/* Run it now if we can. */
-	if(!esp->current_SC && !esp->resetting_bus)
-		esp_exec_cmd(esp);
-
-	return 0;
-}
-
-/* Dump driver state. */
-static void esp_dump_cmd(Scsi_Cmnd *SCptr)
-{
-	ESPLOG(("[tgt<%02x> lun<%02x> "
-		"pphase<%s> cphase<%s>]",
-		SCptr->device->id, SCptr->device->lun,
-		phase_string(SCptr->SCp.sent_command),
-		phase_string(SCptr->SCp.phase)));
-}
-
-static void esp_dump_state(struct NCR_ESP *esp, 
-			   struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-#ifdef DEBUG_ESP_CMDS
-	int i;
-#endif
-
-	ESPLOG(("esp%d: dumping state\n", esp->esp_id));
-	
-	/* Print DMA status */
-	esp->dma_dump_state(esp);
-
-	ESPLOG(("esp%d: SW [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->esp_id, esp->sreg, esp->seqreg, esp->ireg));
-	ESPLOG(("esp%d: HW reread [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->esp_id, esp_read(eregs->esp_status), esp_read(eregs->esp_sstep),
-		esp_read(eregs->esp_intrpt)));
-#ifdef DEBUG_ESP_CMDS
-	printk("esp%d: last ESP cmds [", esp->esp_id);
-	i = (esp->espcmdent - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	printk("]\n");
-#endif /* (DEBUG_ESP_CMDS) */
-
-	if(SCptr) {
-		ESPLOG(("esp%d: current command ", esp->esp_id));
-		esp_dump_cmd(SCptr);
-	}
-	ESPLOG(("\n"));
-	SCptr = esp->disconnected_SC;
-	ESPLOG(("esp%d: disconnected ", esp->esp_id));
-	while(SCptr) {
-		esp_dump_cmd(SCptr);
-		SCptr = (Scsi_Cmnd *) SCptr->host_scribble;
-	}
-	ESPLOG(("\n"));
-}
-
-/* Abort a command.  The host_lock is acquired by caller. */
-int esp_abort(Scsi_Cmnd *SCptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
-	struct ESP_regs *eregs = esp->eregs;
-	int don;
-
-	ESPLOG(("esp%d: Aborting command\n", esp->esp_id));
-	esp_dump_state(esp, eregs);
-
-	/* Wheee, if this is the current command on the bus, the
-	 * best we can do is assert ATN and wait for msgout phase.
-	 * This should even fix a hung SCSI bus when we lose state
-	 * in the driver and timeout because the eventual phase change
-	 * will cause the ESP to (eventually) give an interrupt.
-	 */
-	if(esp->current_SC == SCptr) {
-		esp->cur_msgout[0] = ABORT;
-		esp->msgout_len = 1;
-		esp->msgout_ctr = 0;
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		return SUCCESS;
-	}
-
-	/* If it is still in the issue queue then we can safely
-	 * call the completion routine and report abort success.
-	 */
-	don = esp->dma_ports_p(esp);
-	if(don) {
-		esp->dma_ints_off(esp);
-		synchronize_irq(esp->irq);
-	}
-	if(esp->issue_SC) {
-		Scsi_Cmnd **prev, *this;
-		for(prev = (&esp->issue_SC), this = esp->issue_SC;
-		    this;
-		    prev = (Scsi_Cmnd **) &(this->host_scribble),
-		    this = (Scsi_Cmnd *) this->host_scribble) {
-			if(this == SCptr) {
-				*prev = (Scsi_Cmnd *) this->host_scribble;
-				this->host_scribble = NULL;
-				esp_release_dmabufs(esp, this);
-				this->result = DID_ABORT << 16;
-				this->scsi_done(this);
-				if(don)
-					esp->dma_ints_on(esp);
-				return SUCCESS;
-			}
-		}
-	}
-
-	/* Yuck, the command to abort is disconnected, it is not
-	 * worth trying to abort it now if something else is live
-	 * on the bus at this time.  So, we let the SCSI code wait
-	 * a little bit and try again later.
-	 */
-	if(esp->current_SC) {
-		if(don)
-			esp->dma_ints_on(esp);
-		return FAILED;
-	}
-
-	/* It's disconnected, we have to reconnect to re-establish
-	 * the nexus and tell the device to abort.  However, we really
-	 * cannot 'reconnect' per se.  Don't try to be fancy, just
-	 * indicate failure, which causes our caller to reset the whole
-	 * bus.
-	 */
-
-	if(don)
-		esp->dma_ints_on(esp);
-	return FAILED;
-}
-
-/* We've sent ESP_CMD_RS to the ESP, the interrupt had just
- * arrived indicating the end of the SCSI bus reset.  Our job
- * is to clean out the command queues and begin re-execution
- * of SCSI commands once more.
- */
-static int esp_finish_reset(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *sp = esp->current_SC;
-
-	/* Clean up currently executing command, if any. */
-	if (sp != NULL) {
-		esp_release_dmabufs(esp, sp);
-		sp->result = (DID_RESET << 16);
-		sp->scsi_done(sp);
-		esp->current_SC = NULL;
-	}
-
-	/* Clean up disconnected queue, they have been invalidated
-	 * by the bus reset.
-	 */
-	if (esp->disconnected_SC) {
-		while((sp = remove_first_SC(&esp->disconnected_SC)) != NULL) {
-			esp_release_dmabufs(esp, sp);
-			sp->result = (DID_RESET << 16);
-			sp->scsi_done(sp);
-		}
-	}
-
-	/* SCSI bus reset is complete. */
-	esp->resetting_bus = 0;
-	wake_up(&esp->reset_queue);
-
-	/* Ok, now it is safe to get commands going once more. */
-	if(esp->issue_SC)
-		esp_exec_cmd(esp);
-
-	return do_intr_end;
-}
-
-static int esp_do_resetbus(struct NCR_ESP *esp,
-			   struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: Resetting scsi bus\n", esp->esp_id));
-	esp->resetting_bus = 1;
-	esp_cmd(esp, eregs, ESP_CMD_RS);
-
-	return do_intr_end;
-}
-
-/* Reset ESP chip, reset hanging bus, then kill active and
- * disconnected commands for targets without soft reset.
- *
- * The host_lock is acquired by caller.
- */
-int esp_reset(Scsi_Cmnd *SCptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
-
-	spin_lock_irq(esp->ehost->host_lock);
-	(void) esp_do_resetbus(esp, esp->eregs);
-	spin_unlock_irq(esp->ehost->host_lock);
-
-	wait_event(esp->reset_queue, (esp->resetting_bus == 0));
-
-	return SUCCESS;
-}
-
-/* Internal ESP done function. */
-static void esp_done(struct NCR_ESP *esp, int error)
-{
-	Scsi_Cmnd *done_SC;
-
-	if(esp->current_SC) {
-		done_SC = esp->current_SC;
-		esp->current_SC = NULL;
-		esp_release_dmabufs(esp, done_SC);
-		done_SC->result = error;
-		done_SC->scsi_done(done_SC);
-
-		/* Bus is free, issue any commands in the queue. */
-		if(esp->issue_SC && !esp->current_SC)
-			esp_exec_cmd(esp);
-	} else {
-		/* Panic is safe as current_SC is null so we may still
-		 * be able to accept more commands to sync disk buffers.
-		 */
-		ESPLOG(("panicing\n"));
-		panic("esp: done() called with NULL esp->current_SC");
-	}
-}
-
-/* Wheee, ESP interrupt engine. */  
-
-/* Forward declarations. */
-static int esp_do_phase_determine(struct NCR_ESP *esp, 
-				  struct ESP_regs *eregs);
-static int esp_do_data_finale(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-
-#define sreg_datainp(__sreg)  (((__sreg) & ESP_STAT_PMASK) == ESP_DIP)
-#define sreg_dataoutp(__sreg) (((__sreg) & ESP_STAT_PMASK) == ESP_DOP)
-
-/* We try to avoid some interrupts by jumping ahead and see if the ESP
- * has gotten far enough yet.  Hence the following.
- */
-static inline int skipahead1(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			     Scsi_Cmnd *scp, int prev_phase, int new_phase)
-{
-	if(scp->SCp.sent_command != prev_phase)
-		return 0;
-
-	if(esp->dma_irq_p(esp)) {
-		/* Yes, we are able to save an interrupt. */
-		esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
-		esp->ireg = esp_read(eregs->esp_intrpt);
-		if(!(esp->ireg & ESP_INTR_SR))
-			return 0;
-		else
-			return do_reset_complete;
-	}
-	/* Ho hum, target is taking forever... */
-	scp->SCp.sent_command = new_phase; /* so we don't recurse... */
-	return do_intr_end;
-}
-
-static inline int skipahead2(struct NCR_ESP *esp,
-			     struct ESP_regs *eregs,
-			     Scsi_Cmnd *scp, int prev_phase1, int prev_phase2,
-			     int new_phase)
-{
-	if(scp->SCp.sent_command != prev_phase1 &&
-	   scp->SCp.sent_command != prev_phase2)
-		return 0;
-	if(esp->dma_irq_p(esp)) {
-		/* Yes, we are able to save an interrupt. */
-		esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
-		esp->ireg = esp_read(eregs->esp_intrpt);
-		if(!(esp->ireg & ESP_INTR_SR))
-			return 0;
-		else
-			return do_reset_complete;
-	}
-	/* Ho hum, target is taking forever... */
-	scp->SCp.sent_command = new_phase; /* so we don't recurse... */
-	return do_intr_end;
-}
-
-/* Misc. esp helper macros. */
-#define esp_setcount(__eregs, __cnt) \
-	esp_write((__eregs)->esp_tclow, ((__cnt) & 0xff)); \
-	esp_write((__eregs)->esp_tcmed, (((__cnt) >> 8) & 0xff))
-
-#define esp_getcount(__eregs) \
-	((esp_read((__eregs)->esp_tclow)&0xff) | \
-	 ((esp_read((__eregs)->esp_tcmed)&0xff) << 8))
-
-#define fcount(__esp, __eregs) \
-	(esp_read((__eregs)->esp_fflags) & ESP_FF_FBYTES)
-
-#define fnzero(__esp, __eregs) \
-	(esp_read((__eregs)->esp_fflags) & ESP_FF_ONOTZERO)
-
-/* XXX speculative nops unnecessary when continuing amidst a data phase
- * XXX even on esp100!!!  another case of flooding the bus with I/O reg
- * XXX writes...
- */
-#define esp_maybe_nop(__esp, __eregs) \
-	if((__esp)->erev == esp100) \
-		esp_cmd((__esp), (__eregs), ESP_CMD_NULL)
-
-#define sreg_to_dataphase(__sreg) \
-	((((__sreg) & ESP_STAT_PMASK) == ESP_DOP) ? in_dataout : in_datain)
-
-/* The ESP100 when in synchronous data phase, can mistake a long final
- * REQ pulse from the target as an extra byte, it places whatever is on
- * the data lines into the fifo.  For now, we will assume when this
- * happens that the target is a bit quirky and we don't want to
- * be talking synchronously to it anyways.  Regardless, we need to
- * tell the ESP to eat the extraneous byte so that we can proceed
- * to the next phase.
- */
-static inline int esp100_sync_hwbug(struct NCR_ESP *esp, struct ESP_regs *eregs,
-				    Scsi_Cmnd *sp, int fifocnt)
-{
-	/* Do not touch this piece of code. */
-	if((!(esp->erev == esp100)) ||
-	   (!(sreg_datainp((esp->sreg = esp_read(eregs->esp_status))) && !fifocnt) &&
-	    !(sreg_dataoutp(esp->sreg) && !fnzero(esp, eregs)))) {
-		if(sp->SCp.phase == in_dataout)
-			esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-		return 0;
-	} else {
-		/* Async mode for this guy. */
-		build_sync_nego_msg(esp, 0, 0);
-
-		/* Ack the bogus byte, but set ATN first. */
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-		return 1;
-	}
-}
-
-/* This closes the window during a selection with a reselect pending, because
- * we use DMA for the selection process the FIFO should hold the correct
- * contents if we get reselected during this process.  So we just need to
- * ack the possible illegal cmd interrupt pending on the esp100.
- */
-static inline int esp100_reconnect_hwbug(struct NCR_ESP *esp,
-					 struct ESP_regs *eregs)
-{
-	volatile unchar junk;
-
-	if(esp->erev != esp100)
-		return 0;
-	junk = esp_read(eregs->esp_intrpt);
-
-	if(junk & ESP_INTR_SR)
-		return 1;
-	return 0;
-}
-
-/* This verifies the BUSID bits during a reselection so that we know which
- * target is talking to us.
- */
-static inline int reconnect_target(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int it, me = esp->scsi_id_mask, targ = 0;
-
-	if(2 != fcount(esp, eregs))
-		return -1;
-	it = esp_read(eregs->esp_fdata);
-	if(!(it & me))
-		return -1;
-	it &= ~me;
-	if(it & (it - 1))
-		return -1;
-	while(!(it & 1))
-		targ++, it >>= 1;
-	return targ;
-}
-
-/* This verifies the identify from the target so that we know which lun is
- * being reconnected.
- */
-static inline int reconnect_lun(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int lun;
-
-	if((esp->sreg & ESP_STAT_PMASK) != ESP_MIP)
-		return -1;
-	lun = esp_read(eregs->esp_fdata);
-
-	/* Yes, you read this correctly.  We report lun of zero
-	 * if we see parity error.  ESP reports parity error for
-	 * the lun byte, and this is the only way to hope to recover
-	 * because the target is connected.
-	 */
-	if(esp->sreg & ESP_STAT_PERR)
-		return 0;
-
-	/* Check for illegal bits being set in the lun. */
-	if((lun & 0x40) || !(lun & 0x80))
-		return -1;
-
-	return lun & 7;
-}
-
-/* This puts the driver in a state where it can revitalize a command that
- * is being continued due to reselection.
- */
-static inline void esp_connect(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			       Scsi_Cmnd *sp)
-{
-	struct scsi_device *dp = sp->device;
-	struct esp_device *esp_dev = dp->hostdata;
-
-	if(esp->prev_soff  != esp_dev->sync_max_offset ||
-	   esp->prev_stp   != esp_dev->sync_min_period ||
-	   (esp->erev > esp100a &&
-	    esp->prev_cfg3 != esp->config3[scmd_id(sp)])) {
-		esp->prev_soff = esp_dev->sync_max_offset;
-		esp_write(eregs->esp_soff, esp->prev_soff);
-		esp->prev_stp = esp_dev->sync_min_period;
-		esp_write(eregs->esp_stp, esp->prev_stp);
-		if(esp->erev > esp100a) {
-			esp->prev_cfg3 = esp->config3[scmd_id(sp)];
-			esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		} 
-	}
-	esp->current_SC = sp;
-}
-
-/* This will place the current working command back into the issue queue
- * if we are to receive a reselection amidst a selection attempt.
- */
-static inline void esp_reconnect(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(!esp->disconnected_SC)
-		ESPLOG(("esp%d: Weird, being reselected but disconnected "
-			"command queue is empty.\n", esp->esp_id));
-	esp->snip = 0;
-	esp->current_SC = NULL;
-	sp->SCp.phase = not_issued;
-	append_SC(&esp->issue_SC, sp);
-}
-
-/* Begin message in phase. */
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	esp_maybe_nop(esp, eregs);
-	esp_cmd(esp, eregs, ESP_CMD_TI);
-	esp->msgin_len = 1;
-	esp->msgin_ctr = 0;
-	esp_advance_phase(esp->current_SC, in_msgindone);
-	return do_work_bus;
-}
-
-static inline void advance_sg(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	++sp->SCp.buffer;
-	--sp->SCp.buffers_residual;
-	sp->SCp.this_residual = sp->SCp.buffer->length;
-	if (esp->dma_advance_sg)
-		esp->dma_advance_sg (sp);
-	else
-		sp->SCp.ptr = (char *) virt_to_phys(sg_virt(sp->SCp.buffer));
-
-}
-
-/* Please note that the way I've coded these routines is that I _always_
- * check for a disconnect during any and all information transfer
- * phases.  The SCSI standard states that the target _can_ cause a BUS
- * FREE condition by dropping all MSG/CD/IO/BSY signals.  Also note
- * that during information transfer phases the target controls every
- * change in phase, the only thing the initiator can do is "ask" for
- * a message out phase by driving ATN true.  The target can, and sometimes
- * will, completely ignore this request so we cannot assume anything when
- * we try to force a message out phase to abort/reset a target.  Most of
- * the time the target will eventually be nice and go to message out, so
- * we may have to hold on to our state about what we want to tell the target
- * for some period of time.
- */
-
-/* I think I have things working here correctly.  Even partial transfers
- * within a buffer or sub-buffer should not upset us at all no matter
- * how bad the target and/or ESP fucks things up.
- */
-static int esp_do_data(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int thisphase, hmuch;
-
-	ESPDATA(("esp_do_data: "));
-	esp_maybe_nop(esp, eregs);
-	thisphase = sreg_to_dataphase(esp->sreg);
-	esp_advance_phase(SCptr, thisphase);
-	ESPDATA(("newphase<%s> ", (thisphase == in_datain) ? "DATAIN" : "DATAOUT"));
-	hmuch = esp->dma_can_transfer(esp, SCptr);
-
-	/*
-	 * XXX MSch: cater for PIO transfer here; PIO used if hmuch == 0
-	 */
-	if (hmuch) {	/* DMA */
-		/*
-		 * DMA
-		 */
-		ESPDATA(("hmuch<%d> ", hmuch));
-		esp->current_transfer_size = hmuch;
-		esp_setcount(eregs, (esp->fas_premature_intr_workaround ?
-				     (hmuch + 0x40) : hmuch));
-		esp->dma_setup(esp, (__u32)((unsigned long)SCptr->SCp.ptr), 
-			       hmuch, (thisphase == in_datain));
-		ESPDATA(("DMA|TI --> do_intr_end\n"));
-		esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		return do_intr_end;
-		/*
-		 * end DMA
-		 */
-	} else {
-		/*
-		 * PIO
-		 */
-		int oldphase, i = 0; /* or where we left off last time ?? esp->current_data ?? */
-		int fifocnt = 0;
-		unsigned char *p = phys_to_virt((unsigned long)SCptr->SCp.ptr);
-
-		oldphase = esp_read(eregs->esp_status) & ESP_STAT_PMASK;
-
-		/*
-		 * polled transfer; ugly, can we make this happen in a DRQ 
-		 * interrupt handler ??
-		 * requires keeping track of state information in host or 
-		 * command struct!
-		 * Problem: I've never seen a DRQ happen on Mac, not even
-		 * with ESP_CMD_DMA ...
-		 */
-
-		/* figure out how much needs to be transferred */
-		hmuch = SCptr->SCp.this_residual;
-		ESPDATA(("hmuch<%d> pio ", hmuch));
-		esp->current_transfer_size = hmuch;
-
-		/* tell the ESP ... */
-		esp_setcount(eregs, hmuch);
-
-		/* loop */
-		while (hmuch) {
-			int j, fifo_stuck = 0, newphase;
-			unsigned long timeout;
-#if 0
-			unsigned long flags;
-#endif
-#if 0
-			if ( i % 10 )
-				ESPDATA(("\r"));
-			else
-				ESPDATA(( /*"\n"*/ "\r"));
-#endif
-#if 0
-			local_irq_save(flags);
-#endif
-			if(thisphase == in_datain) {
-				/* 'go' ... */ 
-				esp_cmd(esp, eregs, ESP_CMD_TI);
-
-				/* wait for data */
-				timeout = 1000000;
-				while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
-					udelay(2);
-				if (timeout == 0)
-					printk("DRQ datain timeout! \n");
-
-				newphase = esp->sreg & ESP_STAT_PMASK;
-
-				/* see how much we got ... */
-				fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
-				if (!fifocnt)
-					fifo_stuck++;
-				else
-					fifo_stuck = 0;
-
-				ESPDATA(("\rgot %d st %x ph %x", fifocnt, esp->sreg, newphase));
-
-				/* read fifo */
-				for(j=0;j<fifocnt;j++)
-					p[i++] = esp_read(eregs->esp_fdata);
-
-				ESPDATA(("(%d) ", i));
-
-				/* how many to go ?? */
-				hmuch -= fifocnt;
-
-				/* break if status phase !! */
-				if(newphase == ESP_STATP) {
-					/* clear int. */
-					esp->ireg = esp_read(eregs->esp_intrpt);
-					break;
-				}
-			} else {
-#define MAX_FIFO 8
-				/* how much will fit ? */
-				int this_count = MAX_FIFO - fifocnt;
-				if (this_count > hmuch)
-					this_count = hmuch;
-
-				/* fill fifo */
-				for(j=0;j<this_count;j++)
-					esp_write(eregs->esp_fdata, p[i++]);
-
-				/* how many left if this goes out ?? */
-				hmuch -= this_count;
-
-				/* 'go' ... */ 
-				esp_cmd(esp, eregs, ESP_CMD_TI);
-
-				/* wait for 'got it' */
-				timeout = 1000000;
-				while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
-					udelay(2);
-				if (timeout == 0)
-					printk("DRQ dataout timeout!  \n");
-
-				newphase = esp->sreg & ESP_STAT_PMASK;
-
-				/* need to check how much was sent ?? */
-				fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
-				ESPDATA(("\rsent %d st %x ph %x", this_count - fifocnt, esp->sreg, newphase));
-
-				ESPDATA(("(%d) ", i));
-
-				/* break if status phase !! */
-				if(newphase == ESP_STATP) {
-					/* clear int. */
-					esp->ireg = esp_read(eregs->esp_intrpt);
-					break;
-				}
-
-			}
-
-			/* clear int. */
-			esp->ireg = esp_read(eregs->esp_intrpt);
-
-			ESPDATA(("ir %x ... ", esp->ireg));
-
-			if (hmuch == 0)
-				ESPDATA(("done! \n"));
-
-#if 0
-			local_irq_restore(flags);
-#endif
-
-			/* check new bus phase */
-			if (newphase != oldphase && i < esp->current_transfer_size) {
-				/* something happened; disconnect ?? */
-				ESPDATA(("phase change, dropped out with %d done ... ", i));
-				break;
-			}
-
-			/* check int. status */
-			if (esp->ireg & ESP_INTR_DC) {
-				/* disconnect */
-				ESPDATA(("disconnect; %d transferred ... ", i));
-				break;
-			} else if (esp->ireg & ESP_INTR_FDONE) {
-				/* function done */
-				ESPDATA(("function done; %d transferred ... ", i));
-				break;
-			}
-
-			/* XXX fixme: bail out on stall */
-			if (fifo_stuck > 10) {
-				/* we're stuck */
-				ESPDATA(("fifo stall; %d transferred ... ", i));
-				break;
-			}
-		}
-
-		ESPDATA(("\n"));
-		/* check successful completion ?? */
-
-		if (thisphase == in_dataout)
-			hmuch += fifocnt; /* stuck?? adjust data pointer ...*/
-
-		/* tell do_data_finale how much was transferred */
-		esp->current_transfer_size -= hmuch;
-
-		/* still not completely sure on this one ... */		
-		return /*do_intr_end*/ do_work_bus /*do_phase_determine*/ ;
-
-		/*
-		 * end PIO
-		 */
-	}
-	return do_intr_end;
-}
-
-/* See how successful the data transfer was. */
-static int esp_do_data_finale(struct NCR_ESP *esp,
-			      struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	int bogus_data = 0, bytes_sent = 0, fifocnt, ecount = 0;
-
-	if(esp->dma_led_off)
-		esp->dma_led_off(esp);
-
-	ESPDATA(("esp_do_data_finale: "));
-
-	if(SCptr->SCp.phase == in_datain) {
-		if(esp->sreg & ESP_STAT_PERR) {
-			/* Yuck, parity error.  The ESP asserts ATN
-			 * so that we can go to message out phase
-			 * immediately and inform the target that
-			 * something bad happened.
-			 */
-			ESPLOG(("esp%d: data bad parity detected.\n",
-				esp->esp_id));
-			esp->cur_msgout[0] = INITIATOR_ERROR;
-			esp->msgout_len = 1;
-		}
-		if(esp->dma_drain)
-			esp->dma_drain(esp);
-	}
-	if(esp->dma_invalidate)
-		esp->dma_invalidate(esp);
-
-	/* This could happen for the above parity error case. */
-	if(!(esp->ireg == ESP_INTR_BSERV)) {
-		/* Please go to msgout phase, please please please... */
-		ESPLOG(("esp%d: !BSERV after data, probably to msgout\n",
-			esp->esp_id));
-		return esp_do_phase_determine(esp, eregs);
-	}	
-
-	/* Check for partial transfers and other horrible events. */
-	fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-	ecount = esp_getcount(eregs);
-	if(esp->fas_premature_intr_workaround)
-		ecount -= 0x40;
-	bytes_sent = esp->current_transfer_size;
-
-	ESPDATA(("trans_sz=%d, ", bytes_sent));
-	if(!(esp->sreg & ESP_STAT_TCNT))
-		bytes_sent -= ecount;
-	if(SCptr->SCp.phase == in_dataout)
-		bytes_sent -= fifocnt;
-
-	ESPDATA(("bytes_sent=%d (ecount=%d, fifocnt=%d), ", bytes_sent,
-		 ecount, fifocnt));
-
-	/* If we were in synchronous mode, check for peculiarities. */
-	if(esp_dev->sync_max_offset)
-		bogus_data = esp100_sync_hwbug(esp, eregs, SCptr, fifocnt);
-	else
-		esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-	/* Until we are sure of what has happened, we are certainly
-	 * in the dark.
-	 */
-	esp_advance_phase(SCptr, in_the_dark);
-
-	/* Check for premature interrupt condition. Can happen on FAS2x6
-	 * chips. QLogic recommends a workaround by overprogramming the
-	 * transfer counters, but this makes doing scatter-gather impossible.
-	 * Until there is a way to disable scatter-gather for a single target,
-	 * and not only for the entire host adapter as it is now, the workaround
-	 * is way to expensive performance wise.
-	 * Instead, it turns out that when this happens the target has disconnected
-	 * already but it doesn't show in the interrupt register. Compensate for
-	 * that here to try and avoid a SCSI bus reset.
-	 */
-	if(!esp->fas_premature_intr_workaround && (fifocnt == 1) &&
-	   sreg_dataoutp(esp->sreg)) {
-		ESPLOG(("esp%d: Premature interrupt, enabling workaround\n",
-			esp->esp_id));
-#if 0
-		/* Disable scatter-gather operations, they are not possible
-		 * when using this workaround.
-		 */
-		esp->ehost->sg_tablesize = 0;
-		esp->ehost->use_clustering = ENABLE_CLUSTERING;
-		esp->fas_premature_intr_workaround = 1;
-		bytes_sent = 0;
-		if(SCptr->use_sg) {
-			ESPLOG(("esp%d: Aborting scatter-gather operation\n",
-				esp->esp_id));
-			esp->cur_msgout[0] = ABORT;
-			esp->msgout_len = 1;
-			esp->msgout_ctr = 0;
-			esp_cmd(esp, eregs, ESP_CMD_SATN);
-			esp_setcount(eregs, 0xffff);
-			esp_cmd(esp, eregs, ESP_CMD_NULL);
-			esp_cmd(esp, eregs, ESP_CMD_TPAD | ESP_CMD_DMA);
-			return do_intr_end;
-		}
-#else
-		/* Just set the disconnected bit. That's what appears to
-		 * happen anyway. The state machine will pick it up when
-		 * we return.
-		 */
-		esp->ireg |= ESP_INTR_DC;
-#endif
-        }
-
-	if(bytes_sent < 0) {
-		/* I've seen this happen due to lost state in this
-		 * driver.  No idea why it happened, but allowing
-		 * this value to be negative caused things to
-		 * lock up.  This allows greater chance of recovery.
-		 * In fact every time I've seen this, it has been
-		 * a driver bug without question.
-		 */
-		ESPLOG(("esp%d: yieee, bytes_sent < 0!\n", esp->esp_id));
-		ESPLOG(("esp%d: csz=%d fifocount=%d ecount=%d\n",
-			esp->esp_id,
-			esp->current_transfer_size, fifocnt, ecount));
-		ESPLOG(("esp%d: use_sg=%d ptr=%p this_residual=%d\n",
-			esp->esp_id,
-			SCptr->use_sg, SCptr->SCp.ptr, SCptr->SCp.this_residual));
-		ESPLOG(("esp%d: Forcing async for target %d\n", esp->esp_id, 
-			SCptr->device->id));
-		SCptr->device->borken = 1;
-		esp_dev->sync = 0;
-		bytes_sent = 0;
-	}
-
-	/* Update the state of our transfer. */
-	SCptr->SCp.ptr += bytes_sent;
-	SCptr->SCp.this_residual -= bytes_sent;
-	if(SCptr->SCp.this_residual < 0) {
-		/* shit */
-		ESPLOG(("esp%d: Data transfer overrun.\n", esp->esp_id));
-		SCptr->SCp.this_residual = 0;
-	}
-
-	/* Maybe continue. */
-	if(!bogus_data) {
-		ESPDATA(("!bogus_data, "));
-		/* NO MATTER WHAT, we advance the scatterlist,
-		 * if the target should decide to disconnect
-		 * in between scatter chunks (which is common)
-		 * we could die horribly!  I used to have the sg
-		 * advance occur only if we are going back into
-		 * (or are staying in) a data phase, you can
-		 * imagine the hell I went through trying to
-		 * figure this out.
-		 */
-		if(!SCptr->SCp.this_residual && SCptr->SCp.buffers_residual)
-			advance_sg(esp, SCptr);
-#ifdef DEBUG_ESP_DATA
-		if(sreg_datainp(esp->sreg) || sreg_dataoutp(esp->sreg)) {
-			ESPDATA(("to more data\n"));
-		} else {
-			ESPDATA(("to new phase\n"));
-		}
-#endif
-		return esp_do_phase_determine(esp, eregs);
-	}
-	/* Bogus data, just wait for next interrupt. */
-	ESPLOG(("esp%d: bogus_data during end of data phase\n",
-		esp->esp_id));
-	return do_intr_end;
-}
-
-/* We received a non-good status return at the end of
- * running a SCSI command.  This is used to decide if
- * we should clear our synchronous transfer state for
- * such a device when that happens.
- *
- * The idea is that when spinning up a disk or rewinding
- * a tape, we don't want to go into a loop re-negotiating
- * synchronous capabilities over and over.
- */
-static int esp_should_clear_sync(Scsi_Cmnd *sp)
-{
-	unchar cmd = sp->cmnd[0];
-
-	/* These cases are for spinning up a disk and
-	 * waiting for that spinup to complete.
-	 */
-	if(cmd == START_STOP)
-		return 0;
-
-	if(cmd == TEST_UNIT_READY)
-		return 0;
-
-	/* One more special case for SCSI tape drives,
-	 * this is what is used to probe the device for
-	 * completion of a rewind or tape load operation.
-	 */
-	if(sp->device->type == TYPE_TAPE && cmd == MODE_SENSE)
-		return 0;
-
-	return 1;
-}
-
-/* Either a command is completing or a target is dropping off the bus
- * to continue the command in the background so we can do other work.
- */
-static int esp_do_freebus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int rval;
-
-	rval = skipahead2(esp, eregs, SCptr, in_status, in_msgindone, in_freeing);
-	if(rval)
-		return rval;
-
-	if(esp->ireg != ESP_INTR_DC) {
-		ESPLOG(("esp%d: Target will not disconnect\n", esp->esp_id));
-		return do_reset_bus; /* target will not drop BSY... */
-	}
-	esp->msgout_len = 0;
-	esp->prevmsgout = NOP;
-	if(esp->prevmsgin == COMMAND_COMPLETE) {
-		struct esp_device *esp_dev = SCptr->device->hostdata;
-		/* Normal end of nexus. */
-		if(esp->disconnected_SC)
-			esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-		if(SCptr->SCp.Status != GOOD &&
-		   SCptr->SCp.Status != CONDITION_GOOD &&
-		   ((1<<scmd_id(SCptr)) & esp->targets_present) &&
-		   esp_dev->sync && esp_dev->sync_max_offset) {
-			/* SCSI standard says that the synchronous capabilities
-			 * should be renegotiated at this point.  Most likely
-			 * we are about to request sense from this target
-			 * in which case we want to avoid using sync
-			 * transfers until we are sure of the current target
-			 * state.
-			 */
-			ESPMISC(("esp: Status <%d> for target %d lun %d\n",
-				 SCptr->SCp.Status, SCptr->device->id, SCptr->device->lun));
-
-			/* But don't do this when spinning up a disk at
-			 * boot time while we poll for completion as it
-			 * fills up the console with messages.  Also, tapes
-			 * can report not ready many times right after
-			 * loading up a tape.
-			 */
-			if(esp_should_clear_sync(SCptr) != 0)
-				esp_dev->sync = 0;
-		}
-		ESPDISC(("F<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
-		esp_done(esp, ((SCptr->SCp.Status & 0xff) |
-			       ((SCptr->SCp.Message & 0xff)<<8) |
-			       (DID_OK << 16)));
-	} else if(esp->prevmsgin == DISCONNECT) {
-		/* Normal disconnect. */
-		esp_cmd(esp, eregs, ESP_CMD_ESEL);
-		ESPDISC(("D<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
-		append_SC(&esp->disconnected_SC, SCptr);
-		esp->current_SC = NULL;
-		if(esp->issue_SC)
-			esp_exec_cmd(esp);
-	} else {
-		/* Driver bug, we do not expect a disconnect here
-		 * and should not have advanced the state engine
-		 * to in_freeing.
-		 */
-		ESPLOG(("esp%d: last msg not disc and not cmd cmplt.\n",
-			esp->esp_id));
-		return do_reset_bus;
-	}
-	return do_intr_end;
-}
-
-/* When a reselect occurs, and we cannot find the command to
- * reconnect to in our queues, we do this.
- */
-static int esp_bad_reconnect(struct NCR_ESP *esp)
-{
-	Scsi_Cmnd *sp;
-
-	ESPLOG(("esp%d: Eieeee, reconnecting unknown command!\n",
-		esp->esp_id));
-	ESPLOG(("QUEUE DUMP\n"));
-	sp = esp->issue_SC;
-	ESPLOG(("esp%d: issue_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	sp = esp->current_SC;
-	ESPLOG(("esp%d: current_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	sp = esp->disconnected_SC;
-	ESPLOG(("esp%d: disconnected_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	return do_reset_bus;
-}
-
-/* Do the needy when a target tries to reconnect to us. */
-static int esp_do_reconnect(struct NCR_ESP *esp, 
-			    struct ESP_regs *eregs)
-{
-	int lun, target;
-	Scsi_Cmnd *SCptr;
-
-	/* Check for all bogus conditions first. */
-	target = reconnect_target(esp, eregs);
-	if(target < 0) {
-		ESPDISC(("bad bus bits\n"));
-		return do_reset_bus;
-	}
-	lun = reconnect_lun(esp, eregs);
-	if(lun < 0) {
-		ESPDISC(("target=%2x, bad identify msg\n", target));
-		return do_reset_bus;
-	}
-
-	/* Things look ok... */
-	ESPDISC(("R<%02x,%02x>", target, lun));
-
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	if(esp100_reconnect_hwbug(esp, eregs))
-		return do_reset_bus;
-	esp_cmd(esp, eregs, ESP_CMD_NULL);
-
-	SCptr = remove_SC(&esp->disconnected_SC, (unchar) target, (unchar) lun);
-	if(!SCptr)
-		return esp_bad_reconnect(esp);
-
-	esp_connect(esp, eregs, SCptr);
-	esp_cmd(esp, eregs, ESP_CMD_MOK);
-
-	/* Reconnect implies a restore pointers operation. */
-	esp_restore_pointers(esp, SCptr);
-
-	esp->snip = 0;
-	esp_advance_phase(SCptr, in_the_dark);
-	return do_intr_end;
-}
-
-/* End of NEXUS (hopefully), pick up status + message byte then leave if
- * all goes well.
- */
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int intr, rval;
-
-	rval = skipahead1(esp, eregs, SCptr, in_the_dark, in_status);
-	if(rval)
-		return rval;
-
-	intr = esp->ireg;
-	ESPSTAT(("esp_do_status: "));
-	if(intr != ESP_INTR_DC) {
-		int message_out = 0; /* for parity problems */
-
-		/* Ack the message. */
-		ESPSTAT(("ack msg, "));
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-
-		if(esp->dma_poll)
-			esp->dma_poll(esp, (unsigned char *) esp->esp_command);
-
-		ESPSTAT(("got something, "));
-		/* ESP chimes in with one of
-		 *
-		 * 1) function done interrupt:
-		 *	both status and message in bytes
-		 *	are available
-		 *
-		 * 2) bus service interrupt:
-		 *	only status byte was acquired
-		 *
-		 * 3) Anything else:
-		 *	can't happen, but we test for it
-		 *	anyways
-		 *
-		 * ALSO: If bad parity was detected on either
-		 *       the status _or_ the message byte then
-		 *       the ESP has asserted ATN on the bus
-		 *       and we must therefore wait for the
-		 *       next phase change.
-		 */
-		if(intr & ESP_INTR_FDONE) {
-			/* We got it all, hallejulia. */
-			ESPSTAT(("got both, "));
-			SCptr->SCp.Status = esp->esp_command[0];
-			SCptr->SCp.Message = esp->esp_command[1];
-			esp->prevmsgin = SCptr->SCp.Message;
-			esp->cur_msgin[0] = SCptr->SCp.Message;
-			if(esp->sreg & ESP_STAT_PERR) {
-				/* There was bad parity for the
-				 * message byte, the status byte
-				 * was ok.
-				 */
-				message_out = MSG_PARITY_ERROR;
-			}
-		} else if(intr == ESP_INTR_BSERV) {
-			/* Only got status byte. */
-			ESPLOG(("esp%d: got status only, ", esp->esp_id));
-			if(!(esp->sreg & ESP_STAT_PERR)) {
-				SCptr->SCp.Status = esp->esp_command[0];
-				SCptr->SCp.Message = 0xff;
-			} else {
-				/* The status byte had bad parity.
-				 * we leave the scsi_pointer Status
-				 * field alone as we set it to a default
-				 * of CHECK_CONDITION in esp_queue.
-				 */
-				message_out = INITIATOR_ERROR;
-			}
-		} else {
-			/* This shouldn't happen ever. */
-			ESPSTAT(("got bolixed\n"));
-			esp_advance_phase(SCptr, in_the_dark);
-			return esp_do_phase_determine(esp, eregs);
-		}
-
-		if(!message_out) {
-			ESPSTAT(("status=%2x msg=%2x, ", SCptr->SCp.Status,
-				SCptr->SCp.Message));
-			if(SCptr->SCp.Message == COMMAND_COMPLETE) {
-				ESPSTAT(("and was COMMAND_COMPLETE\n"));
-				esp_advance_phase(SCptr, in_freeing);
-				return esp_do_freebus(esp, eregs);
-			} else {
-				ESPLOG(("esp%d: and _not_ COMMAND_COMPLETE\n",
-					esp->esp_id));
-				esp->msgin_len = esp->msgin_ctr = 1;
-				esp_advance_phase(SCptr, in_msgindone);
-				return esp_do_msgindone(esp, eregs);
-			}
-		} else {
-			/* With luck we'll be able to let the target
-			 * know that bad parity happened, it will know
-			 * which byte caused the problems and send it
-			 * again.  For the case where the status byte
-			 * receives bad parity, I do not believe most
-			 * targets recover very well.  We'll see.
-			 */
-			ESPLOG(("esp%d: bad parity somewhere mout=%2x\n",
-				esp->esp_id, message_out));
-			esp->cur_msgout[0] = message_out;
-			esp->msgout_len = esp->msgout_ctr = 1;
-			esp_advance_phase(SCptr, in_the_dark);
-			return esp_do_phase_determine(esp, eregs);
-		}
-	} else {
-		/* If we disconnect now, all hell breaks loose. */
-		ESPLOG(("esp%d: whoops, disconnect\n", esp->esp_id));
-		esp_advance_phase(SCptr, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-}
-
-static int esp_enter_status(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	unchar thecmd = ESP_CMD_ICCSEQ;
-
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-	if(esp->do_pio_cmds) {
-		esp_advance_phase(esp->current_SC, in_status);
-		esp_cmd(esp, eregs, thecmd);
-		while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
-		esp->esp_command[0] = esp_read(eregs->esp_fdata);
-                while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
-                esp->esp_command[1] = esp_read(eregs->esp_fdata);
-	} else {
-		esp->esp_command[0] = esp->esp_command[1] = 0xff;
-		esp_write(eregs->esp_tclow, 2);
-		esp_write(eregs->esp_tcmed, 0);
-		esp->dma_init_read(esp, esp->esp_command_dvma, 2);
-		thecmd |= ESP_CMD_DMA;
-		esp_cmd(esp, eregs, thecmd);
-		esp_advance_phase(esp->current_SC, in_status);
-	}
-
-	return esp_do_status(esp, eregs);
-}
-
-static int esp_disconnect_amidst_phases(struct NCR_ESP *esp,
-					struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *sp = esp->current_SC;
-	struct esp_device *esp_dev = sp->device->hostdata;
-
-	/* This means real problems if we see this
-	 * here.  Unless we were actually trying
-	 * to force the device to abort/reset.
-	 */
-	ESPLOG(("esp%d: Disconnect amidst phases, ", esp->esp_id));
-	ESPLOG(("pphase<%s> cphase<%s>, ",
-		phase_string(sp->SCp.phase),
-		phase_string(sp->SCp.sent_command)));
-
-	if(esp->disconnected_SC)
-		esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-	switch(esp->cur_msgout[0]) {
-	default:
-		/* We didn't expect this to happen at all. */
-		ESPLOG(("device is bolixed\n"));
-		esp_advance_phase(sp, in_tgterror);
-		esp_done(esp, (DID_ERROR << 16));
-		break;
-
-	case BUS_DEVICE_RESET:
-		ESPLOG(("device reset successful\n"));
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-		esp_dev->sync = 0;
-		esp_advance_phase(sp, in_resetdev);
-		esp_done(esp, (DID_RESET << 16));
-		break;
-
-	case ABORT:
-		ESPLOG(("device abort successful\n"));
-		esp_advance_phase(sp, in_abortone);
-		esp_done(esp, (DID_ABORT << 16));
-		break;
-
-	};
-	return do_intr_end;
-}
-
-static int esp_enter_msgout(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_msgout);
-	return esp_do_msgout(esp, eregs);
-}
-
-static int esp_enter_msgin(struct NCR_ESP *esp,
-			   struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_msgin);
-	return esp_do_msgin(esp, eregs);
-}
-
-static int esp_enter_cmd(struct NCR_ESP *esp,
-			 struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_cmdbegin);
-	return esp_do_cmdbegin(esp, eregs);
-}
-
-static int esp_enter_badphase(struct NCR_ESP *esp,
-			      struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: Bizarre bus phase %2x.\n", esp->esp_id,
-		esp->sreg & ESP_STAT_PMASK));
-	return do_reset_bus;
-}
-
-typedef int (*espfunc_t)(struct NCR_ESP *,
-			 struct ESP_regs *);
-
-static espfunc_t phase_vector[] = {
-	esp_do_data,		/* ESP_DOP */
-	esp_do_data,		/* ESP_DIP */
-	esp_enter_cmd,		/* ESP_CMDP */
-	esp_enter_status,	/* ESP_STATP */
-	esp_enter_badphase,	/* ESP_STAT_PMSG */
-	esp_enter_badphase,	/* ESP_STAT_PMSG | ESP_STAT_PIO */
-	esp_enter_msgout,	/* ESP_MOP */
-	esp_enter_msgin,	/* ESP_MIP */
-};
-
-/* The target has control of the bus and we have to see where it has
- * taken us.
- */
-static int esp_do_phase_determine(struct NCR_ESP *esp,
-				  struct ESP_regs *eregs)
-{
-	if ((esp->ireg & ESP_INTR_DC) != 0)
-		return esp_disconnect_amidst_phases(esp, eregs);
-	return phase_vector[esp->sreg & ESP_STAT_PMASK](esp, eregs);
-}
-
-/* First interrupt after exec'ing a cmd comes here. */
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	int cmd_bytes_sent, fcnt;
-
-	fcnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-	cmd_bytes_sent = esp->dma_bytes_sent(esp, fcnt);
-	if(esp->dma_invalidate)
-		esp->dma_invalidate(esp);
-
-	/* Let's check to see if a reselect happened
-	 * while we we're trying to select.  This must
-	 * be checked first.
-	 */
-	if(esp->ireg == (ESP_INTR_RSEL | ESP_INTR_FDONE)) {
-		esp_reconnect(esp, SCptr);
-		return esp_do_reconnect(esp, eregs);
-	}
-
-	/* Looks like things worked, we should see a bus service &
-	 * a function complete interrupt at this point.  Note we
-	 * are doing a direct comparison because we don't want to
-	 * be fooled into thinking selection was successful if
-	 * ESP_INTR_DC is set, see below.
-	 */
-	if(esp->ireg == (ESP_INTR_FDONE | ESP_INTR_BSERV)) {
-		/* target speaks... */
-		esp->targets_present |= (1<<scmd_id(SCptr));
-
-		/* What if the target ignores the sdtr? */
-		if(esp->snip)
-			esp_dev->sync = 1;
-
-		/* See how far, if at all, we got in getting
-		 * the information out to the target.
-		 */
-		switch(esp->seqreg) {
-		default:
-
-		case ESP_STEP_ASEL:
-			/* Arbitration won, target selected, but
-			 * we are in some phase which is not command
-			 * phase nor is it message out phase.
-			 *
-			 * XXX We've confused the target, obviously.
-			 * XXX So clear it's state, but we also end
-			 * XXX up clearing everyone elses.  That isn't
-			 * XXX so nice.  I'd like to just reset this
-			 * XXX target, but if I cannot even get it's
-			 * XXX attention and finish selection to talk
-			 * XXX to it, there is not much more I can do.
-			 * XXX If we have a loaded bus we're going to
-			 * XXX spend the next second or so renegotiating
-			 * XXX for synchronous transfers.
-			 */
-			ESPLOG(("esp%d: STEP_ASEL for tgt %d\n",
-				esp->esp_id, SCptr->device->id));
-
-		case ESP_STEP_SID:
-			/* Arbitration won, target selected, went
-			 * to message out phase, sent one message
-			 * byte, then we stopped.  ATN is asserted
-			 * on the SCSI bus and the target is still
-			 * there hanging on.  This is a legal
-			 * sequence step if we gave the ESP a select
-			 * and stop command.
-			 *
-			 * XXX See above, I could set the borken flag
-			 * XXX in the device struct and retry the
-			 * XXX command.  But would that help for
-			 * XXX tagged capable targets?
-			 */
-
-		case ESP_STEP_NCMD:
-			/* Arbitration won, target selected, maybe
-			 * sent the one message byte in message out
-			 * phase, but we did not go to command phase
-			 * in the end.  Actually, we could have sent
-			 * only some of the message bytes if we tried
-			 * to send out the entire identify and tag
-			 * message using ESP_CMD_SA3.
-			 */
-			cmd_bytes_sent = 0;
-			break;
-
-		case ESP_STEP_PPC:
-			/* No, not the powerPC pinhead.  Arbitration
-			 * won, all message bytes sent if we went to
-			 * message out phase, went to command phase
-			 * but only part of the command was sent.
-			 *
-			 * XXX I've seen this, but usually in conjunction
-			 * XXX with a gross error which appears to have
-			 * XXX occurred between the time I told the
-			 * XXX ESP to arbitrate and when I got the
-			 * XXX interrupt.  Could I have misloaded the
-			 * XXX command bytes into the fifo?  Actually,
-			 * XXX I most likely missed a phase, and therefore
-			 * XXX went into never never land and didn't even
-			 * XXX know it.  That was the old driver though.
-			 * XXX What is even more peculiar is that the ESP
-			 * XXX showed the proper function complete and
-			 * XXX bus service bits in the interrupt register.
-			 */
-
-		case ESP_STEP_FINI4:
-		case ESP_STEP_FINI5:
-		case ESP_STEP_FINI6:
-		case ESP_STEP_FINI7:
-			/* Account for the identify message */
-			if(SCptr->SCp.phase == in_slct_norm)
-				cmd_bytes_sent -= 1;
-		};
-		esp_cmd(esp, eregs, ESP_CMD_NULL);
-
-		/* Be careful, we could really get fucked during synchronous
-		 * data transfers if we try to flush the fifo now.
-		 */
-		if(!fcnt && /* Fifo is empty and... */
-		   /* either we are not doing synchronous transfers or... */
-		   (!esp_dev->sync_max_offset ||
-		    /* We are not going into data in phase. */
-		    ((esp->sreg & ESP_STAT_PMASK) != ESP_DIP)))
-			esp_cmd(esp, eregs, ESP_CMD_FLUSH); /* flush is safe */
-
-		/* See how far we got if this is not a slow command. */
-		if(!esp->esp_slowcmd) {
-			if(cmd_bytes_sent < 0)
-				cmd_bytes_sent = 0;
-			if(cmd_bytes_sent != SCptr->cmd_len) {
-				/* Crapola, mark it as a slowcmd
-				 * so that we have some chance of
-				 * keeping the command alive with
-				 * good luck.
-				 *
-				 * XXX Actually, if we didn't send it all
-				 * XXX this means either we didn't set things
-				 * XXX up properly (driver bug) or the target
-				 * XXX or the ESP detected parity on one of
-				 * XXX the command bytes.  This makes much
-				 * XXX more sense, and therefore this code
-				 * XXX should be changed to send out a
-				 * XXX parity error message or if the status
-				 * XXX register shows no parity error then
-				 * XXX just expect the target to bring the
-				 * XXX bus into message in phase so that it
-				 * XXX can send us the parity error message.
-				 * XXX SCSI sucks...
-				 */
-				esp->esp_slowcmd = 1;
-				esp->esp_scmdp = &(SCptr->cmnd[cmd_bytes_sent]);
-				esp->esp_scmdleft = (SCptr->cmd_len - cmd_bytes_sent);
-			}
-		}
-
-		/* Now figure out where we went. */
-		esp_advance_phase(SCptr, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-
-	/* Did the target even make it? */
-	if(esp->ireg == ESP_INTR_DC) {
-		/* wheee... nobody there or they didn't like
-		 * what we told it to do, clean up.
-		 */
-
-		/* If anyone is off the bus, but working on
-		 * a command in the background for us, tell
-		 * the ESP to listen for them.
-		 */
-		if(esp->disconnected_SC)
-			esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-		if(((1<<SCptr->device->id) & esp->targets_present) &&
-		   esp->seqreg && esp->cur_msgout[0] == EXTENDED_MESSAGE &&
-		   (SCptr->SCp.phase == in_slct_msg ||
-		    SCptr->SCp.phase == in_slct_stop)) {
-			/* shit */
-			esp->snip = 0;
-			ESPLOG(("esp%d: Failed synchronous negotiation for target %d "
-				"lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
-			esp_dev->sync_max_offset = 0;
-			esp_dev->sync_min_period = 0;
-			esp_dev->sync = 1; /* so we don't negotiate again */
-
-			/* Run the command again, this time though we
-			 * won't try to negotiate for synchronous transfers.
-			 *
-			 * XXX I'd like to do something like send an
-			 * XXX INITIATOR_ERROR or ABORT message to the
-			 * XXX target to tell it, "Sorry I confused you,
-			 * XXX please come back and I will be nicer next
-			 * XXX time".  But that requires having the target
-			 * XXX on the bus, and it has dropped BSY on us.
-			 */
-			esp->current_SC = NULL;
-			esp_advance_phase(SCptr, not_issued);
-			prepend_SC(&esp->issue_SC, SCptr);
-			esp_exec_cmd(esp);
-			return do_intr_end;
-		}
-
-		/* Ok, this is normal, this is what we see during boot
-		 * or whenever when we are scanning the bus for targets.
-		 * But first make sure that is really what is happening.
-		 */
-		if(((1<<SCptr->device->id) & esp->targets_present)) {
-			ESPLOG(("esp%d: Warning, live target %d not responding to "
-				"selection.\n", esp->esp_id, SCptr->device->id));
-
-			/* This _CAN_ happen.  The SCSI standard states that
-			 * the target is to _not_ respond to selection if
-			 * _it_ detects bad parity on the bus for any reason.
-			 * Therefore, we assume that if we've talked successfully
-			 * to this target before, bad parity is the problem.
-			 */
-			esp_done(esp, (DID_PARITY << 16));
-		} else {
-			/* Else, there really isn't anyone there. */
-			ESPMISC(("esp: selection failure, maybe nobody there?\n"));
-			ESPMISC(("esp: target %d lun %d\n",
-				 SCptr->device->id, SCptr->device->lun));
-			esp_done(esp, (DID_BAD_TARGET << 16));
-		}
-		return do_intr_end;
-	}
-
-
-	ESPLOG(("esp%d: Selection failure.\n", esp->esp_id));
-	printk("esp%d: Currently -- ", esp->esp_id);
-	esp_print_ireg(esp->ireg);
-	printk(" ");
-	esp_print_statreg(esp->sreg);
-	printk(" ");
-	esp_print_seqreg(esp->seqreg);
-	printk("\n");
-	printk("esp%d: New -- ", esp->esp_id);
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->seqreg = esp_read(eregs->esp_sstep);
-	esp->ireg = esp_read(eregs->esp_intrpt);
-	esp_print_ireg(esp->ireg);
-	printk(" ");
-	esp_print_statreg(esp->sreg);
-	printk(" ");
-	esp_print_seqreg(esp->seqreg);
-	printk("\n");
-	ESPLOG(("esp%d: resetting bus\n", esp->esp_id));
-	return do_reset_bus; /* ugh... */
-}
-
-/* Continue reading bytes for msgin phase. */
-static int esp_do_msgincont(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	if(esp->ireg & ESP_INTR_BSERV) {
-		/* in the right phase too? */
-		if((esp->sreg & ESP_STAT_PMASK) == ESP_MIP) {
-			/* phew... */
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-			esp_advance_phase(esp->current_SC, in_msgindone);
-			return do_intr_end;
-		}
-
-		/* We changed phase but ESP shows bus service,
-		 * in this case it is most likely that we, the
-		 * hacker who has been up for 20hrs straight
-		 * staring at the screen, drowned in coffee
-		 * smelling like retched cigarette ashes
-		 * have miscoded something..... so, try to
-		 * recover as best we can.
-		 */
-		ESPLOG(("esp%d: message in mis-carriage.\n", esp->esp_id));
-	}
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	return do_phase_determine;
-}
-
-static int check_singlebyte_msg(struct NCR_ESP *esp,
-				struct ESP_regs *eregs)
-{
-	esp->prevmsgin = esp->cur_msgin[0];
-	if(esp->cur_msgin[0] & 0x80) {
-		/* wheee... */
-		ESPLOG(("esp%d: target sends identify amidst phases\n",
-			esp->esp_id));
-		esp_advance_phase(esp->current_SC, in_the_dark);
-		return 0;
-	} else if(((esp->cur_msgin[0] & 0xf0) == 0x20) ||
-		  (esp->cur_msgin[0] == EXTENDED_MESSAGE)) {
-		esp->msgin_len = 2;
-		esp_advance_phase(esp->current_SC, in_msgincont);
-		return 0;
-	}
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	switch(esp->cur_msgin[0]) {
-	default:
-		/* We don't want to hear about it. */
-		ESPLOG(("esp%d: msg %02x which we don't know about\n", esp->esp_id,
-			esp->cur_msgin[0]));
-		return MESSAGE_REJECT;
-
-	case NOP:
-		ESPLOG(("esp%d: target %d sends a nop\n", esp->esp_id,
-			esp->current_SC->device->id));
-		return 0;
-
-	case RESTORE_POINTERS:
-		/* In this case we might also have to backup the
-		 * "slow command" pointer.  It is rare to get such
-		 * a save/restore pointer sequence so early in the
-		 * bus transition sequences, but cover it.
-		 */
-		if(esp->esp_slowcmd) {
-			esp->esp_scmdleft = esp->current_SC->cmd_len;
-			esp->esp_scmdp = &esp->current_SC->cmnd[0];
-		}
-		esp_restore_pointers(esp, esp->current_SC);
-		return 0;
-
-	case SAVE_POINTERS:
-		esp_save_pointers(esp, esp->current_SC);
-		return 0;
-
-	case COMMAND_COMPLETE:
-	case DISCONNECT:
-		/* Freeing the bus, let it go. */
-		esp->current_SC->SCp.phase = in_freeing;
-		return 0;
-
-	case MESSAGE_REJECT:
-		ESPMISC(("msg reject, "));
-		if(esp->prevmsgout == EXTENDED_MESSAGE) {
-			struct esp_device *esp_dev = esp->current_SC->device->hostdata;
-
-			/* Doesn't look like this target can
-			 * do synchronous or WIDE transfers.
-			 */
-			ESPSDTR(("got reject, was trying nego, clearing sync/WIDE\n"));
-			esp_dev->sync = 1;
-			esp_dev->wide = 1;
-			esp_dev->sync_min_period = 0;
-			esp_dev->sync_max_offset = 0;
-			return 0;
-		} else {
-			ESPMISC(("not sync nego, sending ABORT\n"));
-			return ABORT;
-		}
-	};
-}
-
-/* Target negotiates for synchronous transfers before we do, this
- * is legal although very strange.  What is even funnier is that
- * the SCSI2 standard specifically recommends against targets doing
- * this because so many initiators cannot cope with this occurring.
- */
-static int target_with_ants_in_pants(struct NCR_ESP *esp,
-				     Scsi_Cmnd *SCptr,
-				     struct esp_device *esp_dev)
-{
-	if(esp_dev->sync || SCptr->device->borken) {
-		/* sorry, no can do */
-		ESPSDTR(("forcing to async, "));
-		build_sync_nego_msg(esp, 0, 0);
-		esp_dev->sync = 1;
-		esp->snip = 1;
-		ESPLOG(("esp%d: hoping for msgout\n", esp->esp_id));
-		esp_advance_phase(SCptr, in_the_dark);
-		return EXTENDED_MESSAGE;
-	}
-
-	/* Ok, we'll check them out... */
-	return 0;
-}
-
-static void sync_report(struct NCR_ESP *esp)
-{
-	int msg3, msg4;
-	char *type;
-
-	msg3 = esp->cur_msgin[3];
-	msg4 = esp->cur_msgin[4];
-	if(msg4) {
-		int hz = 1000000000 / (msg3 * 4);
-		int integer = hz / 1000000;
-		int fraction = (hz - (integer * 1000000)) / 10000;
-		if((msg3 * 4) < 200) {
-			type = "FAST";
-		} else {
-			type = "synchronous";
-		}
-
-		/* Do not transform this back into one big printk
-		 * again, it triggers a bug in our sparc64-gcc272
-		 * sibling call optimization.  -DaveM
-		 */
-		ESPLOG((KERN_INFO "esp%d: target %d ",
-			esp->esp_id, esp->current_SC->device->id));
-		ESPLOG(("[period %dns offset %d %d.%02dMHz ",
-			(int) msg3 * 4, (int) msg4,
-			integer, fraction));
-		ESPLOG(("%s SCSI%s]\n", type,
-			(((msg3 * 4) < 200) ? "-II" : "")));
-	} else {
-		ESPLOG((KERN_INFO "esp%d: target %d asynchronous\n",
-			esp->esp_id, esp->current_SC->device->id));
-	}
-}
-
-static int check_multibyte_msg(struct NCR_ESP *esp,
-			       struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	unchar regval = 0;
-	int message_out = 0;
-
-	ESPSDTR(("chk multibyte msg: "));
-	if(esp->cur_msgin[2] == EXTENDED_SDTR) {
-		int period = esp->cur_msgin[3];
-		int offset = esp->cur_msgin[4];
-
-		ESPSDTR(("is sync nego response, "));
-		if(!esp->snip) {
-			int rval;
-
-			/* Target negotiates first! */
-			ESPSDTR(("target jumps the gun, "));
-			message_out = EXTENDED_MESSAGE; /* we must respond */
-			rval = target_with_ants_in_pants(esp, SCptr, esp_dev);
-			if(rval)
-				return rval;
-		}
-
-		ESPSDTR(("examining sdtr, "));
-
-		/* Offset cannot be larger than ESP fifo size. */
-		if(offset > 15) {
-			ESPSDTR(("offset too big %2x, ", offset));
-			offset = 15;
-			ESPSDTR(("sending back new offset\n"));
-			build_sync_nego_msg(esp, period, offset);
-			return EXTENDED_MESSAGE;
-		}
-
-		if(offset && period > esp->max_period) {
-			/* Yeee, async for this slow device. */
-			ESPSDTR(("period too long %2x, ", period));
-			build_sync_nego_msg(esp, 0, 0);
-			ESPSDTR(("hoping for msgout\n"));
-			esp_advance_phase(esp->current_SC, in_the_dark);
-			return EXTENDED_MESSAGE;
-		} else if (offset && period < esp->min_period) {
-			ESPSDTR(("period too short %2x, ", period));
-			period = esp->min_period;
-			if(esp->erev > esp236)
-				regval = 4;
-			else
-				regval = 5;
-		} else if(offset) {
-			int tmp;
-
-			ESPSDTR(("period is ok, "));
-			tmp = esp->ccycle / 1000;
-			regval = (((period << 2) + tmp - 1) / tmp);
-			if(regval && (esp->erev > esp236)) {
-				if(period >= 50)
-					regval--;
-			}
-		}
-
-		if(offset) {
-			unchar bit;
-
-			esp_dev->sync_min_period = (regval & 0x1f);
-			esp_dev->sync_max_offset = (offset | esp->radelay);
-			if(esp->erev > esp236) {
-				if(esp->erev == fas100a)
-					bit = ESP_CONFIG3_FAST;
-				else
-					bit = ESP_CONFIG3_FSCSI;
-				if(period < 50)
-					esp->config3[SCptr->device->id] |= bit;
-				else
-					esp->config3[SCptr->device->id] &= ~bit;
-				esp->prev_cfg3 = esp->config3[SCptr->device->id];
-				esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-			}
-			esp->prev_soff = esp_dev->sync_min_period;
-			esp_write(eregs->esp_soff, esp->prev_soff);
-			esp->prev_stp = esp_dev->sync_max_offset;
-			esp_write(eregs->esp_stp, esp->prev_stp);
-
-			ESPSDTR(("soff=%2x stp=%2x cfg3=%2x\n",
-				esp_dev->sync_max_offset,
-				esp_dev->sync_min_period,
-				esp->config3[scmd_id(SCptr)]));
-
-			esp->snip = 0;
-		} else if(esp_dev->sync_max_offset) {
-			unchar bit;
-
-			/* back to async mode */
-			ESPSDTR(("unaccaptable sync nego, forcing async\n"));
-			esp_dev->sync_max_offset = 0;
-			esp_dev->sync_min_period = 0;
-			esp->prev_soff = 0;
-			esp_write(eregs->esp_soff, 0);
-			esp->prev_stp = 0;
-			esp_write(eregs->esp_stp, 0);
-			if(esp->erev > esp236) {
-				if(esp->erev == fas100a)
-					bit = ESP_CONFIG3_FAST;
-				else
-					bit = ESP_CONFIG3_FSCSI;
-				esp->config3[SCptr->device->id] &= ~bit;
-				esp->prev_cfg3 = esp->config3[SCptr->device->id];
-				esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-			}
-		}
-
-		sync_report(esp);
-
-		ESPSDTR(("chk multibyte msg: sync is known, "));
-		esp_dev->sync = 1;
-
-		if(message_out) {
-			ESPLOG(("esp%d: sending sdtr back, hoping for msgout\n",
-				esp->esp_id));
-			build_sync_nego_msg(esp, period, offset);
-			esp_advance_phase(SCptr, in_the_dark);
-			return EXTENDED_MESSAGE;
-		}
-
-		ESPSDTR(("returning zero\n"));
-		esp_advance_phase(SCptr, in_the_dark); /* ...or else! */
-		return 0;
-	} else if(esp->cur_msgin[2] == EXTENDED_WDTR) {
-		ESPLOG(("esp%d: AIEEE wide msg received\n", esp->esp_id));
-		message_out = MESSAGE_REJECT;
-	} else if(esp->cur_msgin[2] == EXTENDED_MODIFY_DATA_POINTER) {
-		ESPLOG(("esp%d: rejecting modify data ptr msg\n", esp->esp_id));
-		message_out = MESSAGE_REJECT;
-	}
-	esp_advance_phase(SCptr, in_the_dark);
-	return message_out;
-}
-
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int message_out = 0, it = 0, rval;
-
-	rval = skipahead1(esp, eregs, SCptr, in_msgin, in_msgindone);
-	if(rval)
-		return rval;
-	if(SCptr->SCp.sent_command != in_status) {
-		if(!(esp->ireg & ESP_INTR_DC)) {
-			if(esp->msgin_len && (esp->sreg & ESP_STAT_PERR)) {
-				message_out = MSG_PARITY_ERROR;
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			} else if((it = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES))!=1) {
-				/* We certainly dropped the ball somewhere. */
-				message_out = INITIATOR_ERROR;
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			} else if(!esp->msgin_len) {
-				it = esp_read(eregs->esp_fdata);
-				esp_advance_phase(SCptr, in_msgincont);
-			} else {
-				/* it is ok and we want it */
-				it = esp->cur_msgin[esp->msgin_ctr] =
-					esp_read(eregs->esp_fdata);
-				esp->msgin_ctr++;
-			}
-		} else {
-			esp_advance_phase(SCptr, in_the_dark);
-			return do_work_bus;
-		}
-	} else {
-		it = esp->cur_msgin[0];
-	}
-	if(!message_out && esp->msgin_len) {
-		if(esp->msgin_ctr < esp->msgin_len) {
-			esp_advance_phase(SCptr, in_msgincont);
-		} else if(esp->msgin_len == 1) {
-			message_out = check_singlebyte_msg(esp, eregs);
-		} else if(esp->msgin_len == 2) {
-			if(esp->cur_msgin[0] == EXTENDED_MESSAGE) {
-				if((it+2) >= 15) {
-					message_out = MESSAGE_REJECT;
-				} else {
-					esp->msgin_len = (it + 2);
-					esp_advance_phase(SCptr, in_msgincont);
-				}
-			} else {
-				message_out = MESSAGE_REJECT; /* foo on you */
-			}
-		} else {
-			message_out = check_multibyte_msg(esp, eregs);
-		}
-	}
-	if(message_out < 0) {
-		return -message_out;
-	} else if(message_out) {
-		if(((message_out != 1) &&
-		    ((message_out < 0x20) || (message_out & 0x80))))
-			esp->msgout_len = 1;
-		esp->cur_msgout[0] = message_out;
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		esp_advance_phase(SCptr, in_the_dark);
-		esp->msgin_len = 0;
-	}
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->sreg &= ~(ESP_STAT_INTR);
-	if((esp->sreg & (ESP_STAT_PMSG|ESP_STAT_PCD)) == (ESP_STAT_PMSG|ESP_STAT_PCD))
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-	if((SCptr->SCp.sent_command == in_msgindone) &&
-	    (SCptr->SCp.phase == in_freeing))
-		return esp_do_freebus(esp, eregs);
-	return do_intr_end;
-}
-
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	unsigned char tmp;
-	Scsi_Cmnd *SCptr = esp->current_SC;
-
-	esp_advance_phase(SCptr, in_cmdend);
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	tmp = *esp->esp_scmdp++;
-	esp->esp_scmdleft--;
-	esp_write(eregs->esp_fdata, tmp);
-	esp_cmd(esp, eregs, ESP_CMD_TI);
-	return do_intr_end;
-}
-
-static int esp_do_cmddone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_NULL);
-	if(esp->ireg & ESP_INTR_BSERV) {
-		esp_advance_phase(esp->current_SC, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-	ESPLOG(("esp%d: in do_cmddone() but didn't get BSERV interrupt.\n",
-		esp->esp_id));
-	return do_reset_bus;
-}
-
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	switch(esp->msgout_len) {
-	case 1:
-		esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-		esp_cmd(esp, eregs, ESP_CMD_TI);
-		break;
-
-	case 2:
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->dma_setup(esp, esp->esp_command_dvma, 2, 0);
-			esp_setcount(eregs, 2);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	case 4:
-		esp->snip = 1;
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->esp_command[2] = esp->cur_msgout[2];
-			esp->esp_command[3] = esp->cur_msgout[3];
-			esp->dma_setup(esp, esp->esp_command_dvma, 4, 0);
-			esp_setcount(eregs, 4);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	case 5:
-		esp->snip = 1;
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[4]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->esp_command[2] = esp->cur_msgout[2];
-			esp->esp_command[3] = esp->cur_msgout[3];
-			esp->esp_command[4] = esp->cur_msgout[4];
-			esp->dma_setup(esp, esp->esp_command_dvma, 5, 0);
-			esp_setcount(eregs, 5);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	default:
-		/* whoops */
-		ESPMISC(("bogus msgout sending NOP\n"));
-		esp->cur_msgout[0] = NOP;
-		esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-		esp->msgout_len = 1;
-		esp_cmd(esp, eregs, ESP_CMD_TI);
-		break;
-	}
-	esp_advance_phase(esp->current_SC, in_msgoutdone);
-	return do_intr_end;
-}
-
-static int esp_do_msgoutdone(struct NCR_ESP *esp, 
-			     struct ESP_regs *eregs)
-{
-	if((esp->msgout_len > 1) && esp->dma_barrier)
-		esp->dma_barrier(esp);
-
-	if(!(esp->ireg & ESP_INTR_DC)) {
-		esp_cmd(esp, eregs, ESP_CMD_NULL);
-		switch(esp->sreg & ESP_STAT_PMASK) {
-		case ESP_MOP:
-			/* whoops, parity error */
-			ESPLOG(("esp%d: still in msgout, parity error assumed\n",
-				esp->esp_id));
-			if(esp->msgout_len > 1)
-				esp_cmd(esp, eregs, ESP_CMD_SATN);
-			esp_advance_phase(esp->current_SC, in_msgout);
-			return do_work_bus;
-
-		case ESP_DIP:
-			break;
-
-		default:
-			if(!fcount(esp, eregs) &&
-			   !(((struct esp_device *)esp->current_SC->device->hostdata)->sync_max_offset))
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			break;
-
-		};
-	}
-
-	/* If we sent out a synchronous negotiation message, update
-	 * our state.
-	 */
-	if(esp->cur_msgout[2] == EXTENDED_MESSAGE &&
-	   esp->cur_msgout[4] == EXTENDED_SDTR) {
-		esp->snip = 1; /* anal retentiveness... */
-	}
-
-	esp->prevmsgout = esp->cur_msgout[0];
-	esp->msgout_len = 0;
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	return esp_do_phase_determine(esp, eregs);
-}
-
-static int esp_bus_unexpected(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: command in weird state %2x\n",
-		esp->esp_id, esp->current_SC->SCp.phase));
-	return do_reset_bus;
-}
-
-static espfunc_t bus_vector[] = {
-	esp_do_data_finale,
-	esp_do_data_finale,
-	esp_bus_unexpected,
-	esp_do_msgin,
-	esp_do_msgincont,
-	esp_do_msgindone,
-	esp_do_msgout,
-	esp_do_msgoutdone,
-	esp_do_cmdbegin,
-	esp_do_cmddone,
-	esp_do_status,
-	esp_do_freebus,
-	esp_do_phase_determine,
-	esp_bus_unexpected,
-	esp_bus_unexpected,
-	esp_bus_unexpected,
-};
-
-/* This is the second tier in our dual-level SCSI state machine. */
-static int esp_work_bus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	unsigned int phase;
-
-	ESPBUS(("esp_work_bus: "));
-	if(!SCptr) {
-		ESPBUS(("reconnect\n"));
-		return esp_do_reconnect(esp, eregs);
-	}
-	phase = SCptr->SCp.phase;
-	if ((phase & 0xf0) == in_phases_mask)
-		return bus_vector[(phase & 0x0f)](esp, eregs);
-	else if((phase & 0xf0) == in_slct_mask)
-		return esp_select_complete(esp, eregs);
-	else
-		return esp_bus_unexpected(esp, eregs);
-}
-
-static espfunc_t isvc_vector[] = {
-	NULL,
-	esp_do_phase_determine,
-	esp_do_resetbus,
-	esp_finish_reset,
-	esp_work_bus
-};
-
-/* Main interrupt handler for an esp adapter. */
-void esp_handle(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs;
-	Scsi_Cmnd *SCptr;
-	int what_next = do_intr_end;
-	eregs = esp->eregs;
-	SCptr = esp->current_SC;
-
-	if(esp->dma_irq_entry)
-		esp->dma_irq_entry(esp);
-
-	/* Check for errors. */
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->sreg &= (~ESP_STAT_INTR);
-	esp->seqreg = (esp_read(eregs->esp_sstep) & ESP_STEP_VBITS);
-	esp->ireg = esp_read(eregs->esp_intrpt);   /* Unlatch intr and stat regs */
-	ESPIRQ(("handle_irq: [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->sreg, esp->seqreg, esp->ireg));
-	if(esp->sreg & (ESP_STAT_SPAM)) {
-		/* Gross error, could be due to one of:
-		 *
-		 * - top of fifo overwritten, could be because
-		 *   we tried to do a synchronous transfer with
-		 *   an offset greater than ESP fifo size
-		 *
-		 * - top of command register overwritten
-		 *
-		 * - DMA setup to go in one direction, SCSI
-		 *   bus points in the other, whoops
-		 *
-		 * - weird phase change during asynchronous
-		 *   data phase while we are initiator
-		 */
-		ESPLOG(("esp%d: Gross error sreg=%2x\n", esp->esp_id, esp->sreg));
-
-		/* If a command is live on the bus we cannot safely
-		 * reset the bus, so we'll just let the pieces fall
-		 * where they may.  Here we are hoping that the
-		 * target will be able to cleanly go away soon
-		 * so we can safely reset things.
-		 */
-		if(!SCptr) {
-			ESPLOG(("esp%d: No current cmd during gross error, "
-				"resetting bus\n", esp->esp_id));
-			what_next = do_reset_bus;
-			goto state_machine;
-		}
-	}
-
-	/* No current cmd is only valid at this point when there are
-	 * commands off the bus or we are trying a reset.
-	 */
-	if(!SCptr && !esp->disconnected_SC && !(esp->ireg & ESP_INTR_SR)) {
-		/* Panic is safe, since current_SC is null. */
-		ESPLOG(("esp%d: no command in esp_handle()\n", esp->esp_id));
-		panic("esp_handle: current_SC == penguin within interrupt!");
-	}
-
-	if(esp->ireg & (ESP_INTR_IC)) {
-		/* Illegal command fed to ESP.  Outside of obvious
-		 * software bugs that could cause this, there is
-		 * a condition with ESP100 where we can confuse the
-		 * ESP into an erroneous illegal command interrupt
-		 * because it does not scrape the FIFO properly
-		 * for reselection.  See esp100_reconnect_hwbug()
-		 * to see how we try very hard to avoid this.
-		 */
-		ESPLOG(("esp%d: invalid command\n", esp->esp_id));
-
-		esp_dump_state(esp, eregs);
-
-		if(SCptr) {
-			/* Devices with very buggy firmware can drop BSY
-			 * during a scatter list interrupt when using sync
-			 * mode transfers.  We continue the transfer as
-			 * expected, the target drops the bus, the ESP
-			 * gets confused, and we get a illegal command
-			 * interrupt because the bus is in the disconnected
-			 * state now and ESP_CMD_TI is only allowed when
-			 * a nexus is alive on the bus.
-			 */
-			ESPLOG(("esp%d: Forcing async and disabling disconnect for "
-				"target %d\n", esp->esp_id, SCptr->device->id));
-			SCptr->device->borken = 1; /* foo on you */
-		}
-
-		what_next = do_reset_bus;
-	} else if(!(esp->ireg & ~(ESP_INTR_FDONE | ESP_INTR_BSERV | ESP_INTR_DC))) {
-		int phase;
-
-		if(SCptr) {
-			phase = SCptr->SCp.phase;
-			if(phase & in_phases_mask) {
-				what_next = esp_work_bus(esp, eregs);
-			} else if(phase & in_slct_mask) {
-				what_next = esp_select_complete(esp, eregs);
-			} else {
-				ESPLOG(("esp%d: interrupt for no good reason...\n",
-					esp->esp_id));
-				what_next = do_intr_end;
-			}
-		} else {
-			ESPLOG(("esp%d: BSERV or FDONE or DC while SCptr==NULL\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	} else if(esp->ireg & ESP_INTR_SR) {
-		ESPLOG(("esp%d: SCSI bus reset interrupt\n", esp->esp_id));
-		what_next = do_reset_complete;
-	} else if(esp->ireg & (ESP_INTR_S | ESP_INTR_SATN)) {
-		ESPLOG(("esp%d: AIEEE we have been selected by another initiator!\n",
-			esp->esp_id));
-		what_next = do_reset_bus;
-	} else if(esp->ireg & ESP_INTR_RSEL) {
-		if(!SCptr) {
-			/* This is ok. */
-			what_next = esp_do_reconnect(esp, eregs);
-		} else if(SCptr->SCp.phase & in_slct_mask) {
-			/* Only selection code knows how to clean
-			 * up properly.
-			 */
-			ESPDISC(("Reselected during selection attempt\n"));
-			what_next = esp_select_complete(esp, eregs);
-		} else {
-			ESPLOG(("esp%d: Reselected while bus is busy\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	}
-
-	/* This is tier-one in our dual level SCSI state machine. */
-state_machine:
-	while(what_next != do_intr_end) {
-		if (what_next >= do_phase_determine &&
-		    what_next < do_intr_end)
-			what_next = isvc_vector[what_next](esp, eregs);
-		else {
-			/* state is completely lost ;-( */
-			ESPLOG(("esp%d: interrupt engine loses state, resetting bus\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	}
-	if(esp->dma_irq_exit)
-		esp->dma_irq_exit(esp);
-}
-EXPORT_SYMBOL(esp_handle);
-
-#ifndef CONFIG_SMP
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp;
-	unsigned long flags;
-	int again;
-	struct Scsi_Host *dev = dev_id;
-
-	/* Handle all ESP interrupts showing at this IRQ level. */
-	spin_lock_irqsave(dev->host_lock, flags);
-repeat:
-	again = 0;
-	for_each_esp(esp) {
-#ifndef __mips__	    
-		if(((esp)->irq & 0xff) == irq) {
-#endif		    
-			if(esp->dma_irq_p(esp)) {
-				again = 1;
-
-				esp->dma_ints_off(esp);
-
-				ESPIRQ(("I%d(", esp->esp_id));
-				esp_handle(esp);
-				ESPIRQ((")"));
-
-				esp->dma_ints_on(esp);
-			}
-#ifndef __mips__		    
-		}
-#endif	    
-	}
-	if(again)
-		goto repeat;
-	spin_unlock_irqrestore(dev->host_lock, flags);
-	return IRQ_HANDLED;
-}
-#else
-/* For SMP we only service one ESP on the list list at our IRQ level! */
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp;
-	unsigned long flags;
-	struct Scsi_Host *dev = dev_id;
-	
-	/* Handle all ESP interrupts showing at this IRQ level. */
-	spin_lock_irqsave(dev->host_lock, flags);
-	for_each_esp(esp) {
-		if(((esp)->irq & 0xf) == irq) {
-			if(esp->dma_irq_p(esp)) {
-				esp->dma_ints_off(esp);
-
-				ESPIRQ(("I[%d:%d](",
-					smp_processor_id(), esp->esp_id));
-				esp_handle(esp);
-				ESPIRQ((")"));
-
-				esp->dma_ints_on(esp);
-				goto out;
-			}
-		}
-	}
-out:
-	spin_unlock_irqrestore(dev->host_lock, flags);
-	return IRQ_HANDLED;
-}
-#endif
-
-int esp_slave_alloc(struct scsi_device *SDptr)
-{
-	struct esp_device *esp_dev =
-		kzalloc(sizeof(struct esp_device), GFP_ATOMIC);
-
-	if (!esp_dev)
-		return -ENOMEM;
-	SDptr->hostdata = esp_dev;
-	return 0;
-}
-
-void esp_slave_destroy(struct scsi_device *SDptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SDptr->host->hostdata;
-
-	esp->targets_present &= ~(1 << sdev_id(SDptr));
-	kfree(SDptr->hostdata);
-	SDptr->hostdata = NULL;
-}
-
-#ifdef MODULE
-int init_module(void) { return 0; }
-void cleanup_module(void) {}
-void esp_release(void)
-{
-	esps_in_use--;
-	esps_running = esps_in_use;
-}
-EXPORT_SYMBOL(esp_release);
-#endif
-
-EXPORT_SYMBOL(esp_abort);
-EXPORT_SYMBOL(esp_allocate);
-EXPORT_SYMBOL(esp_deallocate);
-EXPORT_SYMBOL(esp_initialize);
-EXPORT_SYMBOL(esp_intr);
-EXPORT_SYMBOL(esp_queue);
-EXPORT_SYMBOL(esp_reset);
-EXPORT_SYMBOL(esp_slave_alloc);
-EXPORT_SYMBOL(esp_slave_destroy);
-EXPORT_SYMBOL(esps_in_use);
-
-MODULE_LICENSE("GPL");

drivers/scsi/NCR53C9x.h

···
-/* NCR53C9x.c:  Defines and structures for the NCR53C9x generic driver.
- *
- * Originally esp.h:  Defines and structures for the Sparc ESP 
- *                   (Enhanced SCSI Processor) driver under Linux.
- *
- * Copyright (C) 1995 David S. Miller ([e-mail])
- *
- * Generalization by Jesper Skov ([e-mail])
- *
- * More generalization (for i386 stuff) by Tymm Twillman ([e-mail])
- */
-
-#ifndef NCR53C9X_H
-#define NCR53C9X_H
-
-#include <linux/interrupt.h>
-
-/* djweis for mac driver */
-#if defined(CONFIG_MAC)
-#define PAD_SIZE 15
-#else
-#define PAD_SIZE 3
-#endif
-
-/* Handle multiple hostadapters on Amiga
- * generally PAD_SIZE = 3
- * but there is one exception: Oktagon (PAD_SIZE = 1) */
-#if defined(CONFIG_OKTAGON_SCSI) || defined(CONFIG_OKTAGON_SCSI_MODULE)
-#undef PAD_SIZE
-#if defined(CONFIG_BLZ1230_SCSI) || defined(CONFIG_BLZ1230_SCSI_MODULE) || \
-    defined(CONFIG_BLZ2060_SCSI) || defined(CONFIG_BLZ2060_SCSI_MODULE) || \
-    defined(CONFIG_CYBERSTORM_SCSI) || defined(CONFIG_CYBERSTORM_SCSI_MODULE) || \
-    defined(CONFIG_CYBERSTORMII_SCSI) || defined(CONFIG_CYBERSTORMII_SCSI_MODULE) || \
-    defined(CONFIG_FASTLANE_SCSI) || defined(CONFIG_FASTLANE_SCSI_MODULE)
-#define MULTIPLE_PAD_SIZES
-#else
-#define PAD_SIZE 1
-#endif
-#endif
-
-/* Macros for debugging messages */
-
-#define DEBUG_ESP
-/* #define DEBUG_ESP_DATA */
-/* #define DEBUG_ESP_QUEUE */
-/* #define DEBUG_ESP_DISCONNECT */
-/* #define DEBUG_ESP_STATUS */
-/* #define DEBUG_ESP_PHASES */
-/* #define DEBUG_ESP_WORKBUS */
-/* #define DEBUG_STATE_MACHINE */
-/* #define DEBUG_ESP_CMDS */
-/* #define DEBUG_ESP_IRQS */
-/* #define DEBUG_SDTR */
-/* #define DEBUG_ESP_SG */
-
-/* Use the following to sprinkle debugging messages in a way which
- * suits you if combinations of the above become too verbose when
- * trying to track down a specific problem.
- */
-/* #define DEBUG_ESP_MISC */
-
-#if defined(DEBUG_ESP)
-#define ESPLOG(foo)  printk foo
-#else
-#define ESPLOG(foo)
-#endif /* (DEBUG_ESP) */
-
-#if defined(DEBUG_ESP_DATA)
-#define ESPDATA(foo)  printk foo
-#else
-#define ESPDATA(foo)
-#endif
-
-#if defined(DEBUG_ESP_QUEUE)
-#define ESPQUEUE(foo)  printk foo
-#else
-#define ESPQUEUE(foo)
-#endif
-
-#if defined(DEBUG_ESP_DISCONNECT)
-#define ESPDISC(foo)  printk foo
-#else
-#define ESPDISC(foo)
-#endif
-
-#if defined(DEBUG_ESP_STATUS)
-#define ESPSTAT(foo)  printk foo
-#else
-#define ESPSTAT(foo)
-#endif
-
-#if defined(DEBUG_ESP_PHASES)
-#define ESPPHASE(foo)  printk foo
-#else
-#define ESPPHASE(foo)
-#endif
-
-#if defined(DEBUG_ESP_WORKBUS)
-#define ESPBUS(foo)  printk foo
-#else
-#define ESPBUS(foo)
-#endif
-
-#if defined(DEBUG_ESP_IRQS)
-#define ESPIRQ(foo)  printk foo
-#else
-#define ESPIRQ(foo)
-#endif
-
-#if defined(DEBUG_SDTR)
-#define ESPSDTR(foo)  printk foo
-#else
-#define ESPSDTR(foo)
-#endif
-
-#if defined(DEBUG_ESP_MISC)
-#define ESPMISC(foo)  printk foo
-#else
-#define ESPMISC(foo)
-#endif
-
-/*
- * padding for register structure
- */
-#ifdef CONFIG_JAZZ_ESP
-#define EREGS_PAD(n)
-#else
-#ifndef MULTIPLE_PAD_SIZES
-#define EREGS_PAD(n)    unchar n[PAD_SIZE];
-#endif
-#endif
-
-/* The ESP SCSI controllers have their register sets in three
- * "classes":
- *
- * 1) Registers which are both read and write.
- * 2) Registers which are read only.
- * 3) Registers which are write only.
- *
- * Yet, they all live within the same IO space.
- */
-
-#if !defined(__i386__) && !defined(__x86_64__)
-
-#ifndef MULTIPLE_PAD_SIZES
-
-#ifdef CONFIG_CPU_HAS_WB
-#include <asm/wbflush.h>
-#define esp_write(__reg, __val) do{(__reg) = (__val); wbflush();} while(0)
-#else
-#define esp_write(__reg, __val) ((__reg) = (__val))
-#endif
-#define esp_read(__reg) (__reg)
-
-struct ESP_regs {
-                                /* Access    Description              Offset */
-    volatile unchar esp_tclow;  /* rw  Low bits of the transfer count 0x00   */
-                                EREGS_PAD(tlpad1);
-    volatile unchar esp_tcmed;  /* rw  Mid bits of the transfer count 0x04   */
-                                EREGS_PAD(fdpad);
-    volatile unchar esp_fdata;  /* rw  FIFO data bits                 0x08   */
-                                EREGS_PAD(cbpad);
-    volatile unchar esp_cmnd;   /* rw  SCSI command bits              0x0c   */
-                                EREGS_PAD(stpad);
-    volatile unchar esp_status; /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status  /* wo  Bus ID for select/reselect     0x10   */
-                                EREGS_PAD(irqpd);
-    volatile unchar esp_intrpt; /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt  /* wo  Timeout value for select/resel 0x14   */
-                                EREGS_PAD(sspad);
-    volatile unchar esp_sstep;  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep   /* wo  Transfer period per sync       0x18   */
-                                EREGS_PAD(ffpad);
-    volatile unchar esp_fflags; /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags  /* wo  Sync offset                    0x1c   */
-                                EREGS_PAD(cf1pd);
-    volatile unchar esp_cfg1;   /* rw  First configuration register   0x20   */
-                                EREGS_PAD(cfpad);
-    volatile unchar esp_cfact;  /* wo  Clock conversion factor        0x24   */
-                                EREGS_PAD(ctpad);
-    volatile unchar esp_ctest;  /* wo  Chip test register             0x28   */
-                                EREGS_PAD(cf2pd);
-    volatile unchar esp_cfg2;   /* rw  Second configuration register  0x2c   */
-                                EREGS_PAD(cf3pd);
-
-    /* The following is only found on the 53C9X series SCSI chips */
-    volatile unchar esp_cfg3;   /* rw  Third configuration register   0x30  */
-                                EREGS_PAD(cf4pd);
-    volatile unchar esp_cfg4;   /* rw  Fourth configuration register  0x34  */
-                                EREGS_PAD(thpd);
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-    volatile unchar esp_tchi;   /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi    /* ro  Unique ID code                 0x38  */
-                                EREGS_PAD(fgpad);    
-    volatile unchar esp_fgrnd;  /* rw  Data base for fifo             0x3c  */
-};
-
-#else /* MULTIPLE_PAD_SIZES */
-
-#define esp_write(__reg, __val) (*(__reg) = (__val))
-#define esp_read(__reg) (*(__reg))
-
-struct ESP_regs {
-    unsigned char io_addr[64]; /* dummy */
-                                                 /* Access    Description              Offset */
-#define esp_tclow   io_addr                      /* rw  Low bits of the transfer count 0x00   */
-#define esp_tcmed   io_addr + (1<<(esp->shift))  /* rw  Mid bits of the transfer count 0x04   */
-#define esp_fdata   io_addr + (2<<(esp->shift))  /* rw  FIFO data bits                 0x08   */
-#define esp_cmnd    io_addr + (3<<(esp->shift))  /* rw  SCSI command bits              0x0c   */
-#define esp_status  io_addr + (4<<(esp->shift))  /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status                   /* wo  Bus ID for select/reselect     0x10   */
-#define esp_intrpt  io_addr + (5<<(esp->shift))  /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt                   /* wo  Timeout value for select/resel 0x14   */
-#define esp_sstep   io_addr + (6<<(esp->shift))  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep                    /* wo  Transfer period per sync       0x18   */
-#define esp_fflags  io_addr + (7<<(esp->shift))  /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags                   /* wo  Sync offset                    0x1c   */
-#define esp_cfg1    io_addr + (8<<(esp->shift))  /* rw  First configuration register   0x20   */
-#define esp_cfact   io_addr + (9<<(esp->shift))  /* wo  Clock conversion factor        0x24   */
-#define esp_ctest   io_addr + (10<<(esp->shift)) /* wo  Chip test register             0x28   */
-#define esp_cfg2    io_addr + (11<<(esp->shift)) /* rw  Second configuration register  0x2c   */
-
-    /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3    io_addr + (12<<(esp->shift)) /* rw  Third configuration register   0x30  */
-#define esp_cfg4    io_addr + (13<<(esp->shift)) /* rw  Fourth configuration register  0x34  */
-
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi    io_addr + (14<<(esp->shift)) /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi                     /* ro  Unique ID code                 0x38  */
-#define esp_fgrnd   io_addr + (15<<(esp->shift)) /* rw  Data base for fifo             0x3c  */
-};
-
-#endif
-
-#else /* !defined(__i386__) && !defined(__x86_64__) */
-
-#define esp_write(__reg, __val) outb((__val), (__reg))
-#define esp_read(__reg) inb((__reg))
-
-struct ESP_regs {
-    unsigned int io_addr;
-                                 /* Access    Description              Offset */
-#define esp_tclow   io_addr      /* rw  Low bits of the transfer count 0x00   */
-#define esp_tcmed   io_addr + 1  /* rw  Mid bits of the transfer count 0x04   */
-#define esp_fdata   io_addr + 2  /* rw  FIFO data bits                 0x08   */
-#define esp_cmnd    io_addr + 3  /* rw  SCSI command bits              0x0c   */
-#define esp_status  io_addr + 4  /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status   /* wo  Bus ID for select/reselect     0x10   */
-#define esp_intrpt  io_addr + 5  /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt   /* wo  Timeout value for select/resel 0x14   */
-#define esp_sstep   io_addr + 6  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep    /* wo  Transfer period per sync       0x18   */
-#define esp_fflags  io_addr + 7  /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags   /* wo  Sync offset                    0x1c   */
-#define esp_cfg1    io_addr + 8  /* rw  First configuration register   0x20   */
-#define esp_cfact   io_addr + 9  /* wo  Clock conversion factor        0x24   */
-#define esp_ctest   io_addr + 10 /* wo  Chip test register             0x28   */
-#define esp_cfg2    io_addr + 11 /* rw  Second configuration register  0x2c   */
-
-    /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3    io_addr + 12 /* rw  Third configuration register   0x30  */
-#define esp_cfg4    io_addr + 13 /* rw  Fourth configuration register  0x34  */
-
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi    io_addr + 14 /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi     /* ro  Unique ID code                 0x38  */
-#define esp_fgrnd   io_addr + 15 /* rw  Data base for fifo             0x3c  */
-};
-
-#endif /* !defined(__i386__) && !defined(__x86_64__) */
-
-/* Various revisions of the ESP board. */
-enum esp_rev {
-  esp100     = 0x00,  /* NCR53C90 - very broken */
-  esp100a    = 0x01,  /* NCR53C90A */
-  esp236     = 0x02,
-  fas236     = 0x03,
-  fas100a    = 0x04,
-  fast       = 0x05,
-  fas366     = 0x06,
-  fas216     = 0x07,
-  fsc        = 0x08,  /* SYM53C94-2 */
-  espunknown = 0x09
-};
-
-/* We allocate one of these for each scsi device and attach it to
- * SDptr->hostdata for use in the driver
- */
-struct esp_device {
-  unsigned char sync_min_period;
-  unsigned char sync_max_offset;
-  unsigned sync:1;
-  unsigned wide:1;
-  unsigned disconnect:1;
-};
-
-/* We get one of these for each ESP probed. */
-struct NCR_ESP {
-  struct NCR_ESP *next;                   /* Next ESP on probed or NULL */
-  struct ESP_regs *eregs;	          /* All esp registers */
-  int dma;                                /* Who I do transfers with. */
-  void *dregs;		  		  /* And his registers. */
-  struct Scsi_Host *ehost;                /* Backpointer to SCSI Host */
-
-  void *edev;        		          /* Pointer to controller base/SBus */
-  int esp_id;                             /* Unique per-ESP ID number */
-
-  /* ESP Configuration Registers */
-  unsigned char config1;                  /* Copy of the 1st config register */
-  unsigned char config2;                  /* Copy of the 2nd config register */
-  unsigned char config3[16];              /* Copy of the 3rd config register */
-
-  /* The current command we are sending to the ESP chip.  This esp_command
-   * ptr needs to be mapped in DVMA area so we can send commands and read
-   * from the ESP fifo without burning precious CPU cycles.  Programmed I/O
-   * sucks when we have the DVMA to do it for us.  The ESP is stupid and will
-   * only send out 6, 10, and 12 byte SCSI commands, others we need to send
-   * one byte at a time.  esp_slowcmd being set says that we are doing one
-   * of the command types ESP doesn't understand, esp_scmdp keeps track of
-   * which byte we are sending, esp_scmdleft says how many bytes to go.
-   */
-  volatile unchar *esp_command;           /* Location of command (CPU view)  */
-  __u32            esp_command_dvma;      /* Location of command (DVMA view) */
-  unsigned char esp_clen;                 /* Length of this command */
-  unsigned char esp_slowcmd;
-  unsigned char *esp_scmdp;
-  unsigned char esp_scmdleft;
-
-  /* The following are used to determine the cause of an IRQ. Upon every
-   * IRQ entry we synchronize these with the hardware registers.
-   */
-  unchar ireg;                            /* Copy of ESP interrupt register */
-  unchar sreg;                            /* Same for ESP status register */
-  unchar seqreg;                          /* The ESP sequence register */
-
-  /* The following is set when a premature interrupt condition is detected
-   * in some FAS revisions.
-   */
-  unchar fas_premature_intr_workaround;
-
-  /* To save register writes to the ESP, which can be expensive, we
-   * keep track of the previous value that various registers had for
-   * the last target we connected to.  If they are the same for the
-   * current target, we skip the register writes as they are not needed.
-   */
-  unchar prev_soff, prev_stp, prev_cfg3;
-
-  /* For each target we keep track of save/restore data
-   * pointer information.  This needs to be updated majorly
-   * when we add support for tagged queueing.  -DaveM
-   */
-  struct esp_pointers {
-	  char *saved_ptr;
-	  struct scatterlist *saved_buffer;
-	  int saved_this_residual;
-	  int saved_buffers_residual;
-  } data_pointers[16] /*XXX [MAX_TAGS_PER_TARGET]*/;
-
-  /* Clock periods, frequencies, synchronization, etc. */
-  unsigned int cfreq;                    /* Clock frequency in HZ */
-  unsigned int cfact;                    /* Clock conversion factor */
-  unsigned int ccycle;                   /* One ESP clock cycle */
-  unsigned int ctick;                    /* One ESP clock time */
-  unsigned int radelay;                  /* FAST chip req/ack delay */
-  unsigned int neg_defp;                 /* Default negotiation period */
-  unsigned int sync_defp;                /* Default sync transfer period */
-  unsigned int max_period;               /* longest our period can be */
-  unsigned int min_period;               /* shortest period we can withstand */
-  /* For slow to medium speed input clock rates we shoot for 5mb/s,
-   * but for high input clock rates we try to do 10mb/s although I
-   * don't think a transfer can even run that fast with an ESP even
-   * with DMA2 scatter gather pipelining.
-   */
-#define SYNC_DEFP_SLOW            0x32   /* 5mb/s  */
-#define SYNC_DEFP_FAST            0x19   /* 10mb/s */
-
-  unsigned int snip;                      /* Sync. negotiation in progress */
-  unsigned int wnip;                      /* WIDE negotiation in progress */
-  unsigned int targets_present;           /* targets spoken to before */
-
-  int current_transfer_size;              /* Set at beginning of data dma */
-
-  unchar espcmdlog[32];                   /* Log of current esp cmds sent. */
-  unchar espcmdent;                       /* Current entry in esp cmd log. */
-
-  /* Misc. info about this ESP */
-  enum esp_rev erev;                      /* ESP revision */
-  int irq;                                /* IRQ for this ESP */
-  int scsi_id;                            /* Who am I as initiator? */
-  int scsi_id_mask;                       /* Bitmask of 'me'. */
-  int diff;                               /* Differential SCSI bus? */
-  int slot;                               /* Slot the adapter occupies */
-
-  /* Our command queues, only one cmd lives in the current_SC queue. */
-  Scsi_Cmnd *issue_SC;           /* Commands to be issued */
-  Scsi_Cmnd *current_SC;         /* Who is currently working the bus */
-  Scsi_Cmnd *disconnected_SC;    /* Commands disconnected from the bus */
-
-  /* Message goo */
-  unchar cur_msgout[16];
-  unchar cur_msgin[16];
-  unchar prevmsgout, prevmsgin;
-  unchar msgout_len, msgin_len;
-  unchar msgout_ctr, msgin_ctr;
-
-  /* States that we cannot keep in the per cmd structure because they
-   * cannot be assosciated with any specific command.
-   */
-  unchar resetting_bus;
-  wait_queue_head_t reset_queue;
-
-  unchar do_pio_cmds;		/* Do command transfer with pio */
-
-  /* How much bits do we have to shift the registers */
-  unsigned char shift;
-
-  /* Functions handling DMA
-   */ 
-  /* Required functions */
-  int  (*dma_bytes_sent)(struct NCR_ESP *, int);
-  int  (*dma_can_transfer)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_dump_state)(struct NCR_ESP *);
-  void (*dma_init_read)(struct NCR_ESP *, __u32, int);
-  void (*dma_init_write)(struct NCR_ESP *, __u32, int);
-  void (*dma_ints_off)(struct NCR_ESP *);
-  void (*dma_ints_on)(struct NCR_ESP *);
-  int  (*dma_irq_p)(struct NCR_ESP *);
-  int  (*dma_ports_p)(struct NCR_ESP *);
-  void (*dma_setup)(struct NCR_ESP *, __u32, int, int);
-
-  /* Optional functions (i.e. may be initialized to 0) */
-  void (*dma_barrier)(struct NCR_ESP *);
-  void (*dma_drain)(struct NCR_ESP *);
-  void (*dma_invalidate)(struct NCR_ESP *);
-  void (*dma_irq_entry)(struct NCR_ESP *);
-  void (*dma_irq_exit)(struct NCR_ESP *);
-  void (*dma_led_off)(struct NCR_ESP *);
-  void (*dma_led_on)(struct NCR_ESP *);
-  void (*dma_poll)(struct NCR_ESP *, unsigned char *);
-  void (*dma_reset)(struct NCR_ESP *);
-    
-  /* Optional virtual DMA functions */
-  void (*dma_mmu_get_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_get_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_release_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_release_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_advance_sg)(Scsi_Cmnd *);
-};
-
-/* Bitfield meanings for the above registers. */
-
-/* ESP config reg 1, read-write, found on all ESP chips */
-#define ESP_CONFIG1_ID        0x07             /* My BUS ID bits */
-#define ESP_CONFIG1_CHTEST    0x08             /* Enable ESP chip tests */
-#define ESP_CONFIG1_PENABLE   0x10             /* Enable parity checks */
-#define ESP_CONFIG1_PARTEST   0x20             /* Parity test mode enabled? */
-#define ESP_CONFIG1_SRRDISAB  0x40             /* Disable SCSI reset reports */
-#define ESP_CONFIG1_SLCABLE   0x80             /* Enable slow cable mode */
-
-/* ESP config reg 2, read-write, found only on esp100a+esp200+esp236+fsc chips */
-#define ESP_CONFIG2_DMAPARITY 0x01             /* enable DMA Parity (200,236,fsc) */
-#define ESP_CONFIG2_REGPARITY 0x02             /* enable reg Parity (200,236,fsc) */
-#define ESP_CONFIG2_BADPARITY 0x04             /* Bad parity target abort  */
-#define ESP_CONFIG2_SCSI2ENAB 0x08             /* Enable SCSI-2 features (tmode only) */
-#define ESP_CONFIG2_HI        0x10             /* High Impedance DREQ ???  */
-#define ESP_CONFIG2_HMEFENAB  0x10             /* HME features enable */
-#define ESP_CONFIG2_BCM       0x20             /* Enable byte-ctrl (236,fsc)   */
-#define ESP_CONFIG2_FENAB     0x40             /* Enable features (fas100,esp216,fsc)      */
-#define ESP_CONFIG2_SPL       0x40             /* Enable status-phase latch (esp236)   */
-#define ESP_CONFIG2_RFB       0x80             /* Reserve FIFO byte (fsc) */
-#define ESP_CONFIG2_MAGIC     0xe0             /* Invalid bits... */
-
-/* ESP config register 3 read-write, found only esp236+fas236+fas100a+fsc chips */
-#define ESP_CONFIG3_FCLOCK    0x01             /* FAST SCSI clock rate (esp100a/fas366) */
-#define ESP_CONFIG3_TEM       0x01             /* Enable thresh-8 mode (esp/fas236/fsc)  */
-#define ESP_CONFIG3_FAST      0x02             /* Enable FAST SCSI     (esp100a) */
-#define ESP_CONFIG3_ADMA      0x02             /* Enable alternate-dma (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TENB      0x04             /* group2 SCSI2 support (esp100a) */
-#define ESP_CONFIG3_SRB       0x04             /* Save residual byte   (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TMS       0x08             /* Three-byte msg's ok  (esp100a) */
-#define ESP_CONFIG3_FCLK      0x08             /* Fast SCSI clock rate (esp/fas236/fsc)  */
-#define ESP_CONFIG3_IDMSG     0x10             /* ID message checking  (esp100a) */
-#define ESP_CONFIG3_FSCSI     0x10             /* Enable FAST SCSI     (esp/fas236/fsc)  */
-#define ESP_CONFIG3_GTM       0x20             /* group2 SCSI2 support (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TBMS      0x40             /* Three-byte msg's ok  (esp/fas236/fsc)  */
-#define ESP_CONFIG3_IMS       0x80             /* ID msg chk'ng        (esp/fas236/fsc)  */
-
-/* ESP config register 4 read-write, found only on fsc chips */
-#define ESP_CONFIG4_BBTE      0x01             /* Back-to-Back transfer enable */
-#define ESP_CONFIG4_TEST      0x02             /* Transfer counter test mode */
-#define ESP_CONFIG4_EAN       0x04             /* Enable Active Negotiation */
-
-/* ESP command register read-write */
-/* Group 1 commands:  These may be sent at any point in time to the ESP
- *                    chip.  None of them can generate interrupts 'cept
- *                    the "SCSI bus reset" command if you have not disabled
- *                    SCSI reset interrupts in the config1 ESP register.
- */
-#define ESP_CMD_NULL          0x00             /* Null command, ie. a nop */
-#define ESP_CMD_FLUSH         0x01             /* FIFO Flush */
-#define ESP_CMD_RC            0x02             /* Chip reset */
-#define ESP_CMD_RS            0x03             /* SCSI bus reset */
-
-/* Group 2 commands:  ESP must be an initiator and connected to a target
- *                    for these commands to work.
- */
-#define ESP_CMD_TI            0x10             /* Transfer Information */
-#define ESP_CMD_ICCSEQ        0x11             /* Initiator cmd complete sequence */
-#define ESP_CMD_MOK           0x12             /* Message okie-dokie */
-#define ESP_CMD_TPAD          0x18             /* Transfer Pad */
-#define ESP_CMD_SATN          0x1a             /* Set ATN */
-#define ESP_CMD_RATN          0x1b             /* De-assert ATN */
-
-/* Group 3 commands:  ESP must be in the MSGOUT or MSGIN state and be connected
- *                    to a target as the initiator for these commands to work.
- */
-#define ESP_CMD_SMSG          0x20             /* Send message */
-#define ESP_CMD_SSTAT         0x21             /* Send status */
-#define ESP_CMD_SDATA         0x22             /* Send data */
-#define ESP_CMD_DSEQ          0x23             /* Discontinue Sequence */
-#define ESP_CMD_TSEQ          0x24             /* Terminate Sequence */
-#define ESP_CMD_TCCSEQ        0x25             /* Target cmd cmplt sequence */
-#define ESP_CMD_DCNCT         0x27             /* Disconnect */
-#define ESP_CMD_RMSG          0x28             /* Receive Message */
-#define ESP_CMD_RCMD          0x29             /* Receive Command */
-#define ESP_CMD_RDATA         0x2a             /* Receive Data */
-#define ESP_CMD_RCSEQ         0x2b             /* Receive cmd sequence */
-
-/* Group 4 commands:  The ESP must be in the disconnected state and must
- *                    not be connected to any targets as initiator for
- *                    these commands to work.
- */
-#define ESP_CMD_RSEL          0x40             /* Reselect */
-#define ESP_CMD_SEL           0x41             /* Select w/o ATN */
-#define ESP_CMD_SELA          0x42             /* Select w/ATN */
-#define ESP_CMD_SELAS         0x43             /* Select w/ATN & STOP */
-#define ESP_CMD_ESEL          0x44             /* Enable selection */
-#define ESP_CMD_DSEL          0x45             /* Disable selections */
-#define ESP_CMD_SA3           0x46             /* Select w/ATN3 */
-#define ESP_CMD_RSEL3         0x47             /* Reselect3 */
-
-/* This bit enables the ESP's DMA */
-#define ESP_CMD_DMA           0x80             /* Do DMA? */
-
-/* ESP status register read-only */
-#define ESP_STAT_PIO          0x01             /* IO phase bit */
-#define ESP_STAT_PCD          0x02             /* CD phase bit */
-#define ESP_STAT_PMSG         0x04             /* MSG phase bit */
-#define ESP_STAT_PMASK        0x07             /* Mask of phase bits */
-#define ESP_STAT_TDONE        0x08             /* Transfer Completed */
-#define ESP_STAT_TCNT         0x10             /* Transfer Counter Is Zero */
-#define ESP_STAT_PERR         0x20             /* Parity error */
-#define ESP_STAT_SPAM         0x40             /* Real bad error */
-/* This indicates the 'interrupt pending' condition, it is a reserved
- * bit on old revs of the ESP (ESP100, ESP100A, FAS100A).
- */
-#define ESP_STAT_INTR         0x80             /* Interrupt */
-
-/* The status register can be masked with ESP_STAT_PMASK and compared
- * with the following values to determine the current phase the ESP
- * (at least thinks it) is in.  For our purposes we also add our own
- * software 'done' bit for our phase management engine.
- */
-#define ESP_DOP   (0)                                       /* Data Out  */
-#define ESP_DIP   (ESP_STAT_PIO)                            /* Data In   */
-#define ESP_CMDP  (ESP_STAT_PCD)                            /* Command   */
-#define ESP_STATP (ESP_STAT_PCD|ESP_STAT_PIO)               /* Status    */
-#define ESP_MOP   (ESP_STAT_PMSG|ESP_STAT_PCD)              /* Message Out */
-#define ESP_MIP   (ESP_STAT_PMSG|ESP_STAT_PCD|ESP_STAT_PIO) /* Message In */
-
-/* ESP interrupt register read-only */
-#define ESP_INTR_S            0x01             /* Select w/o ATN */
-#define ESP_INTR_SATN         0x02             /* Select w/ATN */
-#define ESP_INTR_RSEL         0x04             /* Reselected */
-#define ESP_INTR_FDONE        0x08             /* Function done */
-#define ESP_INTR_BSERV        0x10             /* Bus service */
-#define ESP_INTR_DC           0x20             /* Disconnect */
-#define ESP_INTR_IC           0x40             /* Illegal command given */
-#define ESP_INTR_SR           0x80             /* SCSI bus reset detected */
-
-/* Interrupt status macros */
-#define ESP_SRESET_IRQ(esp)  ((esp)->intreg & (ESP_INTR_SR))
-#define ESP_ILLCMD_IRQ(esp)  ((esp)->intreg & (ESP_INTR_IC))
-#define ESP_SELECT_WITH_ATN_IRQ(esp)     ((esp)->intreg & (ESP_INTR_SATN))
-#define ESP_SELECT_WITHOUT_ATN_IRQ(esp)  ((esp)->intreg & (ESP_INTR_S))
-#define ESP_SELECTION_IRQ(esp)  ((ESP_SELECT_WITH_ATN_IRQ(esp)) ||         \
-				 (ESP_SELECT_WITHOUT_ATN_IRQ(esp)))
-#define ESP_RESELECTION_IRQ(esp)         ((esp)->intreg & (ESP_INTR_RSEL))
-
-/* ESP sequence step register read-only */
-#define ESP_STEP_VBITS        0x07             /* Valid bits */
-#define ESP_STEP_ASEL         0x00             /* Selection&Arbitrate cmplt */
-#define ESP_STEP_SID          0x01             /* One msg byte sent */
-#define ESP_STEP_NCMD         0x02             /* Was not in command phase */
-#define ESP_STEP_PPC          0x03             /* Early phase chg caused cmnd
-                                                * bytes to be lost
-                                                */
-#define ESP_STEP_FINI4        0x04             /* Command was sent ok */
-
-/* Ho hum, some ESP's set the step register to this as well... */
-#define ESP_STEP_FINI5        0x05
-#define ESP_STEP_FINI6        0x06
-#define ESP_STEP_FINI7        0x07
-#define ESP_STEP_SOM          0x08             /* Synchronous Offset Max */
-
-/* ESP chip-test register read-write */
-#define ESP_TEST_TARG         0x01             /* Target test mode */
-#define ESP_TEST_INI          0x02             /* Initiator test mode */
-#define ESP_TEST_TS           0x04             /* Tristate test mode */
-
-/* ESP unique ID register read-only, found on fas236+fas100a+fsc only */
-#define ESP_UID_F100A         0x00             /* FAS100A  */
-#define ESP_UID_F236          0x02             /* FAS236   */
-#define ESP_UID_FSC           0xa2             /* NCR53CF9x-2  */
-#define ESP_UID_REV           0x07             /* ESP revision */
-#define ESP_UID_FAM           0xf8             /* ESP family   */
-
-/* ESP fifo flags register read-only */
-/* Note that the following implies a 16 byte FIFO on the ESP. */
-#define ESP_FF_FBYTES         0x1f             /* Num bytes in FIFO */
-#define ESP_FF_ONOTZERO       0x20             /* offset ctr not zero (esp100,fsc) */
-#define ESP_FF_SSTEP          0xe0             /* Sequence step */
-
-/* ESP clock conversion factor register write-only */
-#define ESP_CCF_F0            0x00             /* 35.01MHz - 40MHz */
-#define ESP_CCF_NEVER         0x01             /* Set it to this and die */
-#define ESP_CCF_F2            0x02             /* 10MHz */
-#define ESP_CCF_F3            0x03             /* 10.01MHz - 15MHz */
-#define ESP_CCF_F4            0x04             /* 15.01MHz - 20MHz */
-#define ESP_CCF_F5            0x05             /* 20.01MHz - 25MHz */
-#define ESP_CCF_F6            0x06             /* 25.01MHz - 30MHz */
-#define ESP_CCF_F7            0x07             /* 30.01MHz - 35MHz */
-
-#define ESP_BUS_TIMEOUT        275             /* In milli-seconds */
-#define ESP_TIMEO_CONST       8192
-#define FSC_TIMEO_CONST       7668
-#define ESP_NEG_DEFP(mhz, cfact) \
-        ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (8192 * (cfact)))
-#define FSC_NEG_DEFP(mhz, cfact) \
-        ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (7668 * (cfact)))
-#define ESP_MHZ_TO_CYCLE(mhertz)  ((1000000000) / ((mhertz) / 1000))
-#define ESP_TICK(ccf, cycle)  ((7682 * (ccf) * (cycle) / 1000))
-
-
-/* UGLY, UGLY, UGLY! */
-extern int nesps, esps_in_use, esps_running;
-
-/* For our interrupt engine. */
-#define for_each_esp(esp) \
-        for((esp) = espchain; (esp); (esp) = (esp)->next)
-
-
-/* External functions */
-extern void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs);
-extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *, int);
-extern void esp_deallocate(struct NCR_ESP *);
-extern void esp_release(void);
-extern void esp_initialize(struct NCR_ESP *);
-extern irqreturn_t esp_intr(int, void *);
-extern const char *esp_info(struct Scsi_Host *);
-extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-extern int esp_abort(Scsi_Cmnd *);
-extern int esp_reset(Scsi_Cmnd *);
-extern int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
-			 int inout);
-extern int esp_slave_alloc(struct scsi_device *);
-extern void esp_slave_destroy(struct scsi_device *);
-#endif /* !(NCR53C9X_H) */

drivers/scsi/aacraid/aachba.c

···
 			le32_to_cpu(dev->adapter_info.serial[0]), cid);
 }
 
-static void set_sense(u8 *sense_buf, u8 sense_key, u8 sense_code,
-		      u8 a_sense_code, u8 incorrect_length,
-		      u8 bit_pointer, u16 field_pointer,
-		      u32 residue)
+static inline void set_sense(struct sense_data *sense_data, u8 sense_key,
+	u8 sense_code, u8 a_sense_code, u8 bit_pointer, u16 field_pointer)
 {
-	sense_buf[0] = 0xF0;	/* Sense data valid, err code 70h (current error) */
+	u8 *sense_buf = (u8 *)sense_data;
+	/* Sense data valid, err code 70h */
+	sense_buf[0] = 0x70; /* No info field */
 	sense_buf[1] = 0;	/* Segment number, always zero */
 
-	if (incorrect_length) {
-		sense_buf[2] = sense_key | 0x20;/* Set ILI bit | sense key */
-		sense_buf[3] = BYTE3(residue);
-		sense_buf[4] = BYTE2(residue);
-		sense_buf[5] = BYTE1(residue);
-		sense_buf[6] = BYTE0(residue);
-	} else
-		sense_buf[2] = sense_key;	/* Sense key */
-
-	if (sense_key == ILLEGAL_REQUEST)
-		sense_buf[7] = 10;	/* Additional sense length */
-	else
-		sense_buf[7] = 6;	/* Additional sense length */
+	sense_buf[2] = sense_key;	/* Sense key */
 
 	sense_buf[12] = sense_code;	/* Additional sense code */
 	sense_buf[13] = a_sense_code;	/* Additional sense code qualifier */
+
 	if (sense_key == ILLEGAL_REQUEST) {
-		sense_buf[15] = 0;
+		sense_buf[7] = 10;	/* Additional sense length */
 
-		if (sense_code == SENCODE_INVALID_PARAM_FIELD)
-			sense_buf[15] = 0x80;/* Std sense key specific field */
+		sense_buf[15] = bit_pointer;
 		/* Illegal parameter is in the parameter block */
-
 		if (sense_code == SENCODE_INVALID_CDB_FIELD)
-			sense_buf[15] = 0xc0;/* Std sense key specific field */
+			sense_buf[15] |= 0xc0;/* Std sense key specific field */
 		/* Illegal parameter is in the CDB block */
-		sense_buf[15] |= bit_pointer;
 		sense_buf[16] = field_pointer >> 8;	/* MSB */
 		sense_buf[17] = field_pointer;		/* LSB */
-	}
+	} else
+		sense_buf[7] = 6;	/* Additional sense length */
 }
 
 static int aac_bounds_32(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
···
 		dprintk((KERN_DEBUG "aacraid: Illegal lba\n"));
 		cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
 			SAM_STAT_CHECK_CONDITION;
-		set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
-			    HARDWARE_ERROR,
-			    SENCODE_INTERNAL_TARGET_FAILURE,
-			    ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
-			    0, 0);
+		set_sense(&dev->fsa_dev[cid].sense_data,
+		  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
+		  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
 		memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 			     SCSI_SENSE_BUFFERSIZE));
···
 		  le32_to_cpu(readreply->status));
 #endif
 		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
-		set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
-				    HARDWARE_ERROR,
-				    SENCODE_INTERNAL_TARGET_FAILURE,
-				    ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
-				    0, 0);
+		set_sense(&dev->fsa_dev[cid].sense_data,
+		  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
+		  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
 		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 			     SCSI_SENSE_BUFFERSIZE));
···
 		     le32_to_cpu(synchronizereply->status));
 		cmd->result = DID_OK << 16 |
 			COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
-		set_sense((u8 *)&dev->fsa_dev[cid].sense_data,
-				    HARDWARE_ERROR,
-				    SENCODE_INTERNAL_TARGET_FAILURE,
-				    ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
-				    0, 0);
+		set_sense(&dev->fsa_dev[cid].sense_data,
+		  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
+		  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
 		memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 			     SCSI_SENSE_BUFFERSIZE));
···
 	{
 		dprintk((KERN_WARNING "Only INQUIRY & TUR command supported for controller, rcvd = 0x%x.\n", scsicmd->cmnd[0]));
 		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
-		set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
-			    ILLEGAL_REQUEST,
-			    SENCODE_INVALID_COMMAND,
-			    ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
+		set_sense(&dev->fsa_dev[cid].sense_data,
+		  ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
+		  ASENCODE_INVALID_COMMAND, 0, 0);
 		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
 			     SCSI_SENSE_BUFFERSIZE));
···
 				scsicmd->result = DID_OK << 16 |
 				  COMMAND_COMPLETE << 8 |
 				  SAM_STAT_CHECK_CONDITION;
-				set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
-				  ILLEGAL_REQUEST,
-				  SENCODE_INVALID_CDB_FIELD,
-				  ASENCODE_NO_SENSE, 0, 7, 2, 0);
+				set_sense(&dev->fsa_dev[cid].sense_data,
+				  ILLEGAL_REQUEST, SENCODE_INVALID_CDB_FIELD,
+				  ASENCODE_NO_SENSE, 7, 2);
 				memcpy(scsicmd->sense_buffer,
 				  &dev->fsa_dev[cid].sense_data,
 				  min_t(size_t,
···
 			 */
 			dprintk((KERN_WARNING "Unhandled SCSI Command: 0x%x.\n", scsicmd->cmnd[0]));
 			scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
-			set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
-				ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
-				ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
+			set_sense(&dev->fsa_dev[cid].sense_data,
+			  ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
+			  ASENCODE_INVALID_COMMAND, 0, 0);
 			memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
 				min_t(size_t,
 				      sizeof(dev->fsa_dev[cid].sense_data),

drivers/scsi/aacraid/commctrl.c

···
 	 *	Search the list of AdapterFibContext addresses on the adapter
 	 *	to be sure this is a valid address
 	 */
+	spin_lock_irqsave(&dev->fib_lock, flags);
 	entry = dev->fib_list.next;
 	fibctx = NULL;
 
···
 		/*
 		 *	Extract the AdapterFibContext from the Input parameters.
 		 */
-		if (fibctx->unique == f.fibctx) {   /* We found a winner */
+		if (fibctx->unique == f.fibctx) { /* We found a winner */
 			break;
 		}
 		entry = entry->next;
 		fibctx = NULL;
 	}
 	if (!fibctx) {
+		spin_unlock_irqrestore(&dev->fib_lock, flags);
 		dprintk ((KERN_INFO "Fib Context not found\n"));
 		return -EINVAL;
 	}
 
 	if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 		 (fibctx->size != sizeof(struct aac_fib_context))) {
+		spin_unlock_irqrestore(&dev->fib_lock, flags);
 		dprintk ((KERN_INFO "Fib Context corrupt?\n"));
 		return -EINVAL;
 	}
 	status = 0;
-	spin_lock_irqsave(&dev->fib_lock, flags);
 	/*
 	 *	If there are no fibs to send back, then either wait or return
 	 *	-EAGAIN
···
  *	@arg: ioctl arguments
  *
  *	This routine returns the driver version.
- *      Under Linux, there have been no version incompatibilities, so this is
- *      simple!
+ *	Under Linux, there have been no version incompatibilities, so this is
+ *	simple!
  */
 
 static int check_revision(struct aac_dev *dev, void __user *arg)
···
 	u32 data_dir;
 	void __user *sg_user[32];
 	void *sg_list[32];
-	u32   sg_indx = 0;
+	u32 sg_indx = 0;
 	u32 byte_count = 0;
 	u32 actual_fibsize64, actual_fibsize = 0;
 	int i;
···
 	// Fix up srb for endian and force some values
 
 	srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);	// Force this
-	srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
+	srbcmd->channel	 = cpu_to_le32(user_srbcmd->channel);
 	srbcmd->id	 = cpu_to_le32(user_srbcmd->id);
-	srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
-	srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
-	srbcmd->flags    = cpu_to_le32(flags);
+	srbcmd->lun	 = cpu_to_le32(user_srbcmd->lun);
+	srbcmd->timeout	 = cpu_to_le32(user_srbcmd->timeout);
+	srbcmd->flags	 = cpu_to_le32(flags);
 	srbcmd->retry_limit = 0; // Obsolete parameter
 	srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
 	memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
···
 	pci_info.bus = dev->pdev->bus->number;
 	pci_info.slot = PCI_SLOT(dev->pdev->devfn);
 
-       if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
-	       dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
-	       return -EFAULT;
+	if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
+		dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
+		return -EFAULT;
 	}
 	return 0;
 }

drivers/scsi/aacraid/linit.c

···
 	if (error < 0)
 		goto out_deinit;
 
-	if (!(aac->adapter_info.options & AAC_OPT_NEW_COMM)) {
-		error = pci_set_dma_max_seg_size(pdev, 65536);
-		if (error)
-			goto out_deinit;
-	}
-
 	/*
  	 * Lets override negotiations and drop the maximum SG limit to 34
  	 */
 	if ((aac_drivers[index].quirks & AAC_QUIRK_34SG) &&
-			(aac->scsi_host_ptr->sg_tablesize > 34)) {
- 		aac->scsi_host_ptr->sg_tablesize = 34;
- 		aac->scsi_host_ptr->max_sectors
- 		  = (aac->scsi_host_ptr->sg_tablesize * 8) + 112;
+			(shost->sg_tablesize > 34)) {
+		shost->sg_tablesize = 34;
+		shost->max_sectors = (shost->sg_tablesize * 8) + 112;
  	}
 
  	if ((aac_drivers[index].quirks & AAC_QUIRK_17SG) &&
-			(aac->scsi_host_ptr->sg_tablesize > 17)) {
- 		aac->scsi_host_ptr->sg_tablesize = 17;
- 		aac->scsi_host_ptr->max_sectors
- 		  = (aac->scsi_host_ptr->sg_tablesize * 8) + 112;
+			(shost->sg_tablesize > 17)) {
+		shost->sg_tablesize = 17;
+		shost->max_sectors = (shost->sg_tablesize * 8) + 112;
  	}
 
+	error = pci_set_dma_max_seg_size(pdev,
+		(aac->adapter_info.options & AAC_OPT_NEW_COMM) ?
+			(shost->max_sectors << 9) : 65536);
+	if (error)
+		goto out_deinit;
+
 	/*
-	 * Firware printf works only with older firmware.
+	 * Firmware printf works only with older firmware.
 	 */
 	if (aac_drivers[index].quirks & AAC_QUIRK_34SG)
 		aac->printf_enabled = 1;

drivers/scsi/advansys.c

···
 /*
  * Write the EEPROM from 'cfg_buf'.
  */
-void __devinit
+static void __devinit
 AdvSet3550EEPConfig(AdvPortAddr iop_base, ADVEEP_3550_CONFIG *cfg_buf)
 {
 	ushort *wbuf;
···
 /*
  * Write the EEPROM from 'cfg_buf'.
  */
-void __devinit
+static void __devinit
 AdvSet38C0800EEPConfig(AdvPortAddr iop_base, ADVEEP_38C0800_CONFIG *cfg_buf)
 {
 	ushort *wbuf;
···
 /*
  * Write the EEPROM from 'cfg_buf'.
  */
-void __devinit
+static void __devinit
 AdvSet38C1600EEPConfig(AdvPortAddr iop_base, ADVEEP_38C1600_CONFIG *cfg_buf)
 {
 	ushort *wbuf;

drivers/scsi/arcmsr/arcmsr.h

···
 /*The limit of outstanding scsi command that firmware can handle*/
 #define ARCMSR_MAX_OUTSTANDING_CMD						256
 #define ARCMSR_MAX_FREECCB_NUM							320
-#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2007/08/30"
+#define ARCMSR_DRIVER_VERSION		     "Driver Version 1.20.00.15 2007/12/24"
 #define ARCMSR_SCSI_INITIATOR_ID						255
 #define ARCMSR_MAX_XFER_SECTORS							512
 #define ARCMSR_MAX_XFER_SECTORS_B						4096
···
 #define ARCMSR_MESSAGE_START_BGRB		      0x00060008
 #define ARCMSR_MESSAGE_START_DRIVER_MODE	      0x000E0008
 #define ARCMSR_MESSAGE_SET_POST_WINDOW		      0x000F0008
+#define ARCMSR_MESSAGE_ACTIVE_EOI_MODE		    0x00100008
 /* ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK */
 #define ARCMSR_MESSAGE_FIRMWARE_OK		      0x80000000
 /* ioctl transfer */
···
 #define ARCMSR_DRV2IOP_DATA_READ_OK                   0x00000002
 #define ARCMSR_DRV2IOP_CDB_POSTED                     0x00000004
 #define ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED             0x00000008
+#define ARCMSR_DRV2IOP_END_OF_INTERRUPT		0x00000010
 
 /* data tunnel buffer between user space program and its firmware */
 /* user space data to iop 128bytes */

drivers/scsi/arcmsr/arcmsr_hba.c

···
 				(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
 		}
 
-		reg = (struct MessageUnit_B *)(dma_coherent +
-		ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
-
 		dma_addr = dma_coherent_handle;
 		ccb_tmp = (struct CommandControlBlock *)dma_coherent;
 		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
···
 
 out:
 	dma_free_coherent(&acb->pdev->dev,
-		ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20,
-		acb->dma_coherent, acb->dma_coherent_handle);
+		(ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+		sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
 	return -ENOMEM;
 }
 
···
 				& ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
 				writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
 					, reg->iop2drv_doorbell_reg);
+				writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
 				return 0x00;
 			}
 			msleep(10);
···
 				, ccb->startdone
 				, atomic_read(&acb->ccboutstandingcount));
 		}
+	else
 	arcmsr_report_ccb_state(acb, ccb, flag_ccb);
 }
 
···
 	}
 }
 
-static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
+static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
 	struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
 {
 	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
···
 	memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
 
 	nseg = scsi_dma_map(pcmd);
+	if (nseg > ARCMSR_MAX_SG_ENTRIES)
+		return FAILED;
 	BUG_ON(nseg < 0);
 
 	if (nseg) {
···
 		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
 		ccb->ccb_flags |= CCB_FLAG_WRITE;
 	}
+	return SUCCESS;
 }
 
 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
···
 	switch (acb->adapter_type) {
 	case ACB_ADAPTER_TYPE_A: {
 		iounmap(acb->pmuA);
+		dma_free_coherent(&acb->pdev->dev,
+		ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
+		acb->dma_coherent,
+		acb->dma_coherent_handle);
 		break;
 	}
 	case ACB_ADAPTER_TYPE_B: {
 		struct MessageUnit_B *reg = acb->pmuB;
 		iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
 		iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
+		dma_free_coherent(&acb->pdev->dev,
+		(ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+		sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
 	}
 	}
-	dma_free_coherent(&acb->pdev->dev,
-		ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
-		acb->dma_coherent,
-		acb->dma_coherent_handle);
+
 }
 
 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
···
 		return 1;
 
 	writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
-
+	/*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/
+	readl(reg->iop2drv_doorbell_reg);
+	writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
 	if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) 	{
 		arcmsr_iop2drv_data_wrote_handle(acb);
 	}
···
 
 	case ARCMSR_MESSAGE_READ_RQBUFFER: {
 		unsigned long *ver_addr;
-		dma_addr_t buf_handle;
 		uint8_t *pQbuffer, *ptmpQbuffer;
 		int32_t allxfer_len = 0;
+		void *tmp;
 
-		ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
-		if (!ver_addr) {
+		tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+		ver_addr = (unsigned long *)tmp;
+		if (!tmp) {
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
···
 		memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
 		pcmdmessagefld->cmdmessage.Length = allxfer_len;
 		pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
-		pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+		kfree(tmp);
 		}
 		break;
 
 	case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
 		unsigned long *ver_addr;
-		dma_addr_t buf_handle;
 		int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
 		uint8_t *pQbuffer, *ptmpuserbuffer;
+		void *tmp;
 
-		ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
-		if (!ver_addr) {
+		tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+		ver_addr = (unsigned long *)tmp;
+		if (!tmp) {
 			retvalue = ARCMSR_MESSAGE_FAIL;
 			goto message_out;
 		}
···
 				retvalue = ARCMSR_MESSAGE_FAIL;
 			}
 			}
-			pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+			kfree(tmp);
 		}
 		break;
 
···
 	ccb = arcmsr_get_freeccb(acb);
 	if (!ccb)
 		return SCSI_MLQUEUE_HOST_BUSY;
-
-	arcmsr_build_ccb(acb, ccb, cmd);
+	if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) {
+		cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
+		cmd->scsi_done(cmd);
+		return 0;
+	}
 	arcmsr_post_ccb(acb, ccb);
 	return 0;
 }
···
 	}
 }
 
-static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
 					struct CommandControlBlock *poll_ccb)
 {
 		struct MessageUnit_B *reg = acb->pmuB;
···
       (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
 			poll_ccb_done = (ccb == poll_ccb) ? 1:0;
 			if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
-				if (ccb->startdone == ARCMSR_CCB_ABORTED) {
+				if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
 					printk(KERN_NOTICE "arcmsr%d: \
 		scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
 						,acb->host->host_no
···
 		}	/*drain reply FIFO*/
 }
 
-static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
 					struct CommandControlBlock *poll_ccb)
 {
 	switch (acb->adapter_type) {
···
 		do {
 			firmware_state = readl(reg->iop2drv_doorbell_reg);
 		} while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
+		writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
 		}
 		break;
 	}
···
 	}
 }
 
+static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		return;
+	case ACB_ADAPTER_TYPE_B:
+		{
+			struct MessageUnit_B *reg = acb->pmuB;
+			writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg);
+			if(arcmsr_hbb_wait_msgint_ready(acb)) {
+				printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
+				return;
+			}
+		}
+		break;
+	}
+	return;
+}
+
 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
 {
 	uint32_t intmask_org;
 
-	arcmsr_wait_firmware_ready(acb);
-	arcmsr_iop_confirm(acb);
        /* disable all outbound interrupt */
        intmask_org = arcmsr_disable_outbound_ints(acb);
+	arcmsr_wait_firmware_ready(acb);
+	arcmsr_iop_confirm(acb);
 	arcmsr_get_firmware_spec(acb);
 	/*start background rebuild*/
 	arcmsr_start_adapter_bgrb(acb);
 	/* empty doorbell Qbuffer if door bell ringed */
 	arcmsr_clear_doorbell_queue_buffer(acb);
+	arcmsr_enable_eoi_mode(acb);
 	/* enable outbound Post Queue,outbound doorbell Interrupt */
 	arcmsr_enable_outbound_ints(acb, intmask_org);
 	acb->acb_flags |= ACB_F_IOP_INITED;
···
 	arcmsr_start_adapter_bgrb(acb);
 	/* empty doorbell Qbuffer if door bell ringed */
 	arcmsr_clear_doorbell_queue_buffer(acb);
+	arcmsr_enable_eoi_mode(acb);
 	/* enable outbound Post Queue,outbound doorbell Interrupt */
 	arcmsr_enable_outbound_ints(acb, intmask_org);
 	acb->acb_flags |= ACB_F_IOP_INITED;

drivers/scsi/arm/acornscsi.c

···
 	return 0;
     }
 
-    residual = host->SCpnt->request_bufflen - host->scsi.SCp.scsi_xferred;
+    residual = scsi_bufflen(host->SCpnt) - host->scsi.SCp.scsi_xferred;
 
     sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer);
     sbic_arm_writenext(host->scsi.io_port, residual >> 16);
···
 	case 0x4b:			/* -> PHASE_STATUSIN				*/
 	case 0x8b:			/* -> PHASE_STATUSIN				*/
 	    /* DATA IN -> STATUS */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_readstatusbyte(host);
···
 	case 0x4e:			/* -> PHASE_MSGOUT				*/
 	case 0x8e:			/* -> PHASE_MSGOUT				*/
 	    /* DATA IN -> MESSAGE OUT */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_sendmessage(host);
···
 	case 0x4f:			/* message in					*/
 	case 0x8f:			/* message in					*/
 	    /* DATA IN -> MESSAGE IN */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_message(host);	/* -> PHASE_MSGIN, PHASE_DISCONNECT		*/
···
 	case 0x4b:			/* -> PHASE_STATUSIN				*/
 	case 0x8b:			/* -> PHASE_STATUSIN				*/
 	    /* DATA OUT -> STATUS */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_dma_adjust(host);
···
 	case 0x4e:			/* -> PHASE_MSGOUT				*/
 	case 0x8e:			/* -> PHASE_MSGOUT				*/
 	    /* DATA OUT -> MESSAGE OUT */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_dma_adjust(host);
···
 	case 0x4f:			/* message in					*/
 	case 0x8f:			/* message in					*/
 	    /* DATA OUT -> MESSAGE IN */
-	    host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen -
+	    host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
 					  acornscsi_sbic_xfcount(host);
 	    acornscsi_dma_stop(host);
 	    acornscsi_dma_adjust(host);

drivers/scsi/arm/scsi.h

···
  * The scatter-gather list handling.  This contains all
  * the yucky stuff that needs to be fixed properly.
  */
+
+/*
+ * copy_SCp_to_sg() Assumes contiguous allocation at @sg of at-most @max
+ * entries of uninitialized memory. SCp is from scsi-ml and has a valid
+ * (possibly chained) sg-list
+ */
 static inline int copy_SCp_to_sg(struct scatterlist *sg, struct scsi_pointer *SCp, int max)
 {
 	int bufs = SCp->buffers_residual;
 
+	/* FIXME: It should be easy for drivers to loop on copy_SCp_to_sg().
+	 * and to remove this BUG_ON. Use min() in-its-place
+	 */
 	BUG_ON(bufs + 1 > max);
 
 	sg_set_buf(sg, SCp->ptr, SCp->this_residual);
 
-	if (bufs)
-		memcpy(sg + 1, SCp->buffer + 1,
-		       sizeof(struct scatterlist) * bufs);
+	if (bufs) {
+		struct scatterlist *src_sg;
+		unsigned i;
+
+		for_each_sg(sg_next(SCp->buffer), src_sg, bufs, i)
+			*(++sg) = *src_sg;
+		sg_mark_end(sg);
+	}
+
 	return bufs + 1;
 }
 
···
 {
 	int ret = SCp->buffers_residual;
 	if (ret) {
-		SCp->buffer++;
+		SCp->buffer = sg_next(SCp->buffer);
 		SCp->buffers_residual--;
 		SCp->ptr = sg_virt(SCp->buffer);
 		SCp->this_residual = SCp->buffer->length;
···
 {
 	memset(&SCpnt->SCp, 0, sizeof(struct scsi_pointer));
 
-	if (SCpnt->use_sg) {
+	if (scsi_bufflen(SCpnt)) {
 		unsigned long len = 0;
-		int buf;
 
-		SCpnt->SCp.buffer = (struct scatterlist *) SCpnt->request_buffer;
-		SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;
+		SCpnt->SCp.buffer = scsi_sglist(SCpnt);
+		SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
 		SCpnt->SCp.ptr = sg_virt(SCpnt->SCp.buffer);
 		SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
-		SCpnt->SCp.phase = SCpnt->request_bufflen;
+		SCpnt->SCp.phase = scsi_bufflen(SCpnt);
 
 #ifdef BELT_AND_BRACES
-		/*
-		 * Calculate correct buffer length.  Some commands
-		 * come in with the wrong request_bufflen.
-		 */
-		for (buf = 0; buf <= SCpnt->SCp.buffers_residual; buf++)
-			len += SCpnt->SCp.buffer[buf].length;
+		{	/*
+			 * Calculate correct buffer length.  Some commands
+			 * come in with the wrong scsi_bufflen.
+			 */
+			struct scatterlist *sg;
+			unsigned i, sg_count = scsi_sg_count(SCpnt);
 
-		if (SCpnt->request_bufflen != len)
-			printk(KERN_WARNING "scsi%d.%c: bad request buffer "
-			       "length %d, should be %ld\n", SCpnt->device->host->host_no,
-			       '0' + SCpnt->device->id, SCpnt->request_bufflen, len);
-		SCpnt->request_bufflen = len;
+			scsi_for_each_sg(SCpnt, sg, sg_count, i)
+				len += sg->length;
+
+			if (scsi_bufflen(SCpnt) != len) {
+				printk(KERN_WARNING
+				       "scsi%d.%c: bad request buffer "
+				       "length %d, should be %ld\n",
+					SCpnt->device->host->host_no,
+					'0' + SCpnt->device->id,
+					scsi_bufflen(SCpnt), len);
+				/*
+				 * FIXME: Totaly naive fixup. We should abort
+				 * with error
+				 */
+				SCpnt->SCp.phase =
+					min_t(unsigned long, len,
+					      scsi_bufflen(SCpnt));
+			}
+		}
 #endif
 	} else {
-		SCpnt->SCp.ptr = (unsigned char *)SCpnt->request_buffer;
-		SCpnt->SCp.this_residual = SCpnt->request_bufflen;
-		SCpnt->SCp.phase = SCpnt->request_bufflen;
-	}
-
-	/*
-	 * If the upper SCSI layers pass a buffer, but zero length,
-	 * we aren't interested in the buffer pointer.
-	 */
-	if (SCpnt->SCp.this_residual == 0 && SCpnt->SCp.ptr) {
-#if 0 //def BELT_AND_BRACES
-		printk(KERN_WARNING "scsi%d.%c: zero length buffer passed for "
-		       "command ", SCpnt->host->host_no, '0' + SCpnt->target);
-		__scsi_print_command(SCpnt->cmnd);
-#endif
 		SCpnt->SCp.ptr = NULL;
+		SCpnt->SCp.this_residual = 0;
+		SCpnt->SCp.phase = 0;
 	}
 }

drivers/scsi/blz1230.c

···
-/* blz1230.c: Driver for Blizzard 1230 SCSI IV Controller.
- *
- * Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- *    to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- *    routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-#define MKIV 1
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define BLZ1230_ESP_ADDR 0x8000
-#define BLZ1230_DMA_ADDR 0x10000
-#define BLZ1230II_ESP_ADDR 0x10000
-#define BLZ1230II_DMA_ADDR 0x10021
-
-
-/* The Blizzard 1230 DMA interface
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * Only two things can be programmed in the Blizzard DMA:
- *  1) The data direction is controlled by the status of bit 31 (1 = write)
- *  2) The source/dest address (word aligned, shifted one right) in bits 30-0
- *
- * Program DMA by first latching the highest byte of the address/direction
- * (i.e. bits 31-24 of the long word constructed as described in steps 1+2
- * above). Then write each byte of the address/direction (starting with the
- * top byte, working down) to the DMA address register.
- *
- * Figure out interrupt status by reading the ESP status byte.
- */
-struct blz1230_dma_registers {
-	volatile unsigned char dma_addr; 	/* DMA address      [0x0000] */
-	unsigned char dmapad2[0x7fff];
-	volatile unsigned char dma_latch; 	/* DMA latch        [0x8000] */
-};
-
-struct blz1230II_dma_registers {
-	volatile unsigned char dma_addr; 	/* DMA address      [0x0000] */
-	unsigned char dmapad2[0xf];
-	volatile unsigned char dma_latch; 	/* DMA latch        [0x0010] */
-};
-
-#define BLZ1230_DMA_WRITE 0x80000000
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-/***************************************************************** Detection */
-int __init blz1230_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-	struct ESP_regs *eregs;
-	unsigned long board;
-
-#if MKIV
-#define REAL_BLZ1230_ID		ZORRO_PROD_PHASE5_BLIZZARD_1230_IV_1260
-#define REAL_BLZ1230_ESP_ADDR	BLZ1230_ESP_ADDR
-#define REAL_BLZ1230_DMA_ADDR	BLZ1230_DMA_ADDR
-#else
-#define REAL_BLZ1230_ID		ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060
-#define REAL_BLZ1230_ESP_ADDR	BLZ1230II_ESP_ADDR
-#define REAL_BLZ1230_DMA_ADDR	BLZ1230II_DMA_ADDR
-#endif
-
-	if ((z = zorro_find_device(REAL_BLZ1230_ID, z))) {
-	    board = z->resource.start;
-	    if (request_mem_region(board+REAL_BLZ1230_ESP_ADDR,
-				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		/* Do some magic to figure out if the blizzard is
-		 * equipped with a SCSI controller
-		 */
-		address = ZTWO_VADDR(board);
-		eregs = (struct ESP_regs *)(address + REAL_BLZ1230_ESP_ADDR);
-		esp = esp_allocate(tpnt, (void *)board + REAL_BLZ1230_ESP_ADDR,
-				   0);
-
-		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
-		udelay(5);
-		if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7))
-			goto err_out;
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_led_on = 0;
-		esp->dma_led_off = 0;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		/* SCSI chip speed */
-		esp->cfreq = 40000000;
-
-		/* The DMA registers on the Blizzard are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		esp->dregs = (void *)(address + REAL_BLZ1230_DMA_ADDR);
-	
-		/* ESP register base */
-		esp->eregs = eregs;
-
-		/* Set the command buffer */
-		esp->esp_command = cmd_buffer;
-		esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		esp->slot = board+REAL_BLZ1230_ESP_ADDR;
-		if (request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-				 "Blizzard 1230 SCSI IV", esp->ehost))
-			goto err_out;
-
-		/* Figure out our scsi ID on the bus */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
-	    }
-	}
-	return 0;
- 
- err_out:
-	scsi_unregister(esp->ehost);
-	esp_deallocate(esp);
-	release_mem_region(board+REAL_BLZ1230_ESP_ADDR,
-			   sizeof(struct ESP_regs));
-	return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the Blizzard DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	/* I don't think there's any limit on the Blizzard DMA. So we use what
-	 * the ESP chip can handle (24 bit).
-	 */
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0x1000000)
-		sz = 0x1000000;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
-		amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-#if MKIV
-	struct blz1230_dma_registers *dregs = 
-		(struct blz1230_dma_registers *) (esp->dregs);
-#else
-	struct blz1230II_dma_registers *dregs = 
-		(struct blz1230II_dma_registers *) (esp->dregs);
-#endif
-
-	cache_clear(addr, length);
-
-	addr >>= 1;
-	addr &= ~(BLZ1230_DMA_WRITE);
-
-	/* First set latch */
-	dregs->dma_latch = (addr >> 24) & 0xff;
-
-	/* Then pump the address to the DMA address register */
-#if MKIV
-	dregs->dma_addr = (addr >> 24) & 0xff;
-#endif
-	dregs->dma_addr = (addr >> 16) & 0xff;
-	dregs->dma_addr = (addr >>  8) & 0xff;
-	dregs->dma_addr = (addr      ) & 0xff;
-}
-
-void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-#if MKIV
-	struct blz1230_dma_registers *dregs = 
-		(struct blz1230_dma_registers *) (esp->dregs);
-#else
-	struct blz1230II_dma_registers *dregs = 
-		(struct blz1230II_dma_registers *) (esp->dregs);
-#endif
-
-	cache_push(addr, length);
-
-	addr >>= 1;
-	addr |= BLZ1230_DMA_WRITE;
-
-	/* First set latch */
-	dregs->dma_latch = (addr >> 24) & 0xff;
-
-	/* Then pump the address to the DMA address register */
-#if MKIV
-	dregs->dma_addr = (addr >> 24) & 0xff;
-#endif
-	dregs->dma_addr = (addr >> 16) & 0xff;
-	dregs->dma_addr = (addr >>  8) & 0xff;
-	dregs->dma_addr = (addr      ) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-#define HOSTS_C
-
-int blz1230_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-	esp_deallocate((struct NCR_ESP *)instance->hostdata);
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-blz1230",
-	.proc_info		= esp_proc_info,
-	.name			= "Blizzard1230 SCSI IV",
-	.detect			= blz1230_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= blz1230_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/blz2060.c

···
-/* blz2060.c: Driver for Blizzard 2060 SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- *    to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- *    routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define BLZ2060_ESP_ADDR 0x1ff00
-#define BLZ2060_DMA_ADDR 0x1ffe0
-
-
-/* The Blizzard 2060 DMA interface
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * Only two things can be programmed in the Blizzard DMA:
- *  1) The data direction is controlled by the status of bit 31 (1 = write)
- *  2) The source/dest address (word aligned, shifted one right) in bits 30-0
- *
- * Figure out interrupt status by reading the ESP status byte.
- */
-struct blz2060_dma_registers {
-	volatile unsigned char dma_led_ctrl;	/* DMA led control   [0x000] */
-	unsigned char dmapad1[0x0f];
-	volatile unsigned char dma_addr0; 	/* DMA address (MSB) [0x010] */
-	unsigned char dmapad2[0x03];
-	volatile unsigned char dma_addr1; 	/* DMA address       [0x014] */
-	unsigned char dmapad3[0x03];
-	volatile unsigned char dma_addr2; 	/* DMA address       [0x018] */
-	unsigned char dmapad4[0x03];
-	volatile unsigned char dma_addr3; 	/* DMA address (LSB) [0x01c] */
-};
-
-#define BLZ2060_DMA_WRITE 0x80000000
-
-/* DMA control bits */
-#define BLZ2060_DMA_LED    0x02		/* HD led control 1 = off */
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-/***************************************************************** Detection */
-int __init blz2060_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-
-	if ((z = zorro_find_device(ZORRO_PROD_PHASE5_BLIZZARD_2060, z))) {
-	    unsigned long board = z->resource.start;
-	    if (request_mem_region(board+BLZ2060_ESP_ADDR,
-				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		esp = esp_allocate(tpnt, (void *)board + BLZ2060_ESP_ADDR, 0);
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_led_on = &dma_led_on;
-		esp->dma_led_off = &dma_led_off;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		/* SCSI chip speed */
-		esp->cfreq = 40000000;
-
-		/* The DMA registers on the Blizzard are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		address = (unsigned long)ZTWO_VADDR(board);
-		esp->dregs = (void *)(address + BLZ2060_DMA_ADDR);
-
-		/* ESP register base */
-		esp->eregs = (struct ESP_regs *)(address + BLZ2060_ESP_ADDR);
-		
-		/* Set the command buffer */
-		esp->esp_command = cmd_buffer;
-		esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-			    "Blizzard 2060 SCSI", esp->ehost);
-
-		/* Figure out our scsi ID on the bus */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
-	    }
-	}
-	return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the Blizzard DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	/* I don't think there's any limit on the Blizzard DMA. So we use what
-	 * the ESP chip can handle (24 bit).
-	 */
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0x1000000)
-		sz = 0x1000000;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
-		amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct blz2060_dma_registers *dregs = 
-		(struct blz2060_dma_registers *) (esp->dregs);
-
-	cache_clear(addr, length);
-
-	addr >>= 1;
-	addr &= ~(BLZ2060_DMA_WRITE);
-	dregs->dma_addr3 = (addr      ) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct blz2060_dma_registers *dregs = 
-		(struct blz2060_dma_registers *) (esp->dregs);
-
-	cache_push(addr, length);
-
-	addr >>= 1;
-	addr |= BLZ2060_DMA_WRITE;
-	dregs->dma_addr3 = (addr      ) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-	((struct blz2060_dma_registers *) (esp->dregs))->dma_led_ctrl =
-		BLZ2060_DMA_LED;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-	((struct blz2060_dma_registers *) (esp->dregs))->dma_led_ctrl = 0;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-#define HOSTS_C
-
-int blz2060_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
-	esp_deallocate((struct NCR_ESP *)instance->hostdata);
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-blz2060",
-	.proc_info		= esp_proc_info,
-	.name			= "Blizzard2060 SCSI",
-	.detect			= blz2060_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= blz2060_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/cyberstorm.c

···
-/* cyberstorm.c: Driver for CyberStorm SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * The CyberStorm SCSI driver is based on David S. Miller's ESP driver
- * for the Sparc computers. 
- * 
- * This work was made possible by Phase5 who willingly (and most generously)
- * supported me with hardware and all the information I needed.
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- *    to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- *    routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define CYBER_ESP_ADDR 0xf400
-#define CYBER_DMA_ADDR 0xf800
-
-
-/* The CyberStorm DMA interface */
-struct cyber_dma_registers {
-	volatile unsigned char dma_addr0;	/* DMA address (MSB) [0x000] */
-	unsigned char dmapad1[1];
-	volatile unsigned char dma_addr1;	/* DMA address       [0x002] */
-	unsigned char dmapad2[1];
-	volatile unsigned char dma_addr2;	/* DMA address       [0x004] */
-	unsigned char dmapad3[1];
-	volatile unsigned char dma_addr3;	/* DMA address (LSB) [0x006] */
-	unsigned char dmapad4[0x3fb];
-	volatile unsigned char cond_reg;        /* DMA cond    (ro)  [0x402] */
-#define ctrl_reg  cond_reg			/* DMA control (wo)  [0x402] */
-};
-
-/* DMA control bits */
-#define CYBER_DMA_LED    0x80	/* HD led control 1 = on */
-#define CYBER_DMA_WRITE  0x40	/* DMA direction. 1 = write */
-#define CYBER_DMA_Z3     0x20	/* 16 (Z2) or 32 (CHIP/Z3) bit DMA transfer */
-
-/* DMA status bits */
-#define CYBER_DMA_HNDL_INTR 0x80	/* DMA IRQ pending? */
-
-/* The bits below appears to be Phase5 Debug bits only; they were not
- * described by Phase5 so using them may seem a bit stupid...
- */
-#define CYBER_HOST_ID 0x02	/* If set, host ID should be 7, otherwise
-				 * it should be 6.
-				 */
-#define CYBER_SLOW_CABLE 0x08	/* If *not* set, assume SLOW_CABLE */
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static unsigned char ctrl_data = 0;	/* Keep backup of the stuff written
-				 * to ctrl_reg. Always write a copy
-				 * to this register when writing to
-				 * the hardware register!
-				 */
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-/***************************************************************** Detection */
-int __init cyber_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-
-	while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
-	    unsigned long board = z->resource.start;
-	    if ((z->id == ZORRO_PROD_PHASE5_BLIZZARD_1220_CYBERSTORM ||
-		 z->id == ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060) &&
-		request_mem_region(board+CYBER_ESP_ADDR,
-		    		   sizeof(struct ESP_regs), "NCR53C9x")) {
-		/* Figure out if this is a CyberStorm or really a 
-		 * Fastlane/Blizzard Mk II by looking at the board size.
-		 * CyberStorm maps 64kB
-		 * (ZORRO_PROD_PHASE5_BLIZZARD_1220_CYBERSTORM does anyway)
-		 */
-		if(z->resource.end-board != 0xffff) {
-			release_mem_region(board+CYBER_ESP_ADDR,
-					   sizeof(struct ESP_regs));
-			return 0;
-		}
-		esp = esp_allocate(tpnt, (void *)board + CYBER_ESP_ADDR, 0);
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_led_on = &dma_led_on;
-		esp->dma_led_off = &dma_led_off;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		/* SCSI chip speed */
-		esp->cfreq = 40000000;
-
-		/* The DMA registers on the CyberStorm are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		address = (unsigned long)ZTWO_VADDR(board);
-		esp->dregs = (void *)(address + CYBER_DMA_ADDR);
-
-		/* ESP register base */
-		esp->eregs = (struct ESP_regs *)(address + CYBER_ESP_ADDR);
-		
-		/* Set the command buffer */
-		esp->esp_command = cmd_buffer;
-		esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-			    "CyberStorm SCSI", esp->ehost);
-		/* Figure out our scsi ID on the bus */
-		/* The DMA cond flag contains a hardcoded jumper bit
-		 * which can be used to select host number 6 or 7.
-		 * However, even though it may change, we use a hardcoded
-		 * value of 7.
-		 */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
-	    }
-	}
-	return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the CyberStorm DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	/* I don't think there's any limit on the CyberDMA. So we use what
-	 * the ESP chip can handle (24 bit).
-	 */
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0x1000000)
-		sz = 0x1000000;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
-		esp->esp_id, ((struct cyber_dma_registers *)
-			      (esp->dregs))->cond_reg));
-	ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
-		amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct cyber_dma_registers *dregs = 
-		(struct cyber_dma_registers *) esp->dregs;
-
-	cache_clear(addr, length);
-
-	addr &= ~(1);
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr3 = (addr      ) & 0xff;
-	ctrl_data &= ~(CYBER_DMA_WRITE);
-
-	/* Check if physical address is outside Z2 space and of
-	 * block length/block aligned in memory. If this is the
-	 * case, enable 32 bit transfer. In all other cases, fall back
-	 * to 16 bit transfer.
-	 * Obviously 32 bit transfer should be enabled if the DMA address
-	 * and length are 32 bit aligned. However, this leads to some
-	 * strange behavior. Even 64 bit aligned addr/length fails.
-	 * Until I've found a reason for this, 32 bit transfer is only
-	 * used for full-block transfers (1kB).
-	 *							-jskov
-	 */
-#if 0
-	if((addr & 0x3fc) || length & 0x3ff || ((addr > 0x200000) &&
-						(addr < 0xff0000)))
-		ctrl_data &= ~(CYBER_DMA_Z3);	/* Z2, do 16 bit DMA */
-	else
-		ctrl_data |= CYBER_DMA_Z3; /* CHIP/Z3, do 32 bit DMA */
-#else
-	ctrl_data &= ~(CYBER_DMA_Z3);	/* Z2, do 16 bit DMA */
-#endif
-	dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct cyber_dma_registers *dregs = 
-		(struct cyber_dma_registers *) esp->dregs;
-
-	cache_push(addr, length);
-
-	addr |= 1;
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr3 = (addr      ) & 0xff;
-	ctrl_data |= CYBER_DMA_WRITE;
-
-	/* See comment above */
-#if 0
-	if((addr & 0x3fc) || length & 0x3ff || ((addr > 0x200000) &&
-						(addr < 0xff0000)))
-		ctrl_data &= ~(CYBER_DMA_Z3);	/* Z2, do 16 bit DMA */
-	else
-		ctrl_data |= CYBER_DMA_Z3; /* CHIP/Z3, do 32 bit DMA */
-#else
-	ctrl_data &= ~(CYBER_DMA_Z3);	/* Z2, do 16 bit DMA */
-#endif
-	dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	/* It's important to check the DMA IRQ bit in the correct way! */
-	return ((esp_read(esp->eregs->esp_status) & ESP_STAT_INTR) &&
-		((((struct cyber_dma_registers *)(esp->dregs))->cond_reg) &
-		 CYBER_DMA_HNDL_INTR));
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-	ctrl_data &= ~CYBER_DMA_LED;
-	((struct cyber_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-	ctrl_data |= CYBER_DMA_LED;
-	((struct cyber_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-#define HOSTS_C
-
-int cyber_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
-	esp_deallocate((struct NCR_ESP *)instance->hostdata);
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-cyberstorm",
-	.proc_info		= esp_proc_info,
-	.name			= "CyberStorm SCSI",
-	.detect			= cyber_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= cyber_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/cyberstormII.c

···
-/* cyberstormII.c: Driver for CyberStorm SCSI Mk II
- *
- * Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * This driver is based on cyberstorm.c
- */
-
-/* TODO:
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- *    to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- *    routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define CYBERII_ESP_ADDR 0x1ff03
-#define CYBERII_DMA_ADDR 0x1ff43
-
-
-/* The CyberStorm II DMA interface */
-struct cyberII_dma_registers {
-	volatile unsigned char cond_reg;        /* DMA cond    (ro)  [0x000] */
-#define ctrl_reg  cond_reg			/* DMA control (wo)  [0x000] */
-	unsigned char dmapad4[0x3f];
-	volatile unsigned char dma_addr0;	/* DMA address (MSB) [0x040] */
-	unsigned char dmapad1[3];
-	volatile unsigned char dma_addr1;	/* DMA address       [0x044] */
-	unsigned char dmapad2[3];
-	volatile unsigned char dma_addr2;	/* DMA address       [0x048] */
-	unsigned char dmapad3[3];
-	volatile unsigned char dma_addr3;	/* DMA address (LSB) [0x04c] */
-};
-
-/* DMA control bits */
-#define CYBERII_DMA_LED    0x02	/* HD led control 1 = on */
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-/***************************************************************** Detection */
-int __init cyberII_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-	struct ESP_regs *eregs;
-
-	if ((z = zorro_find_device(ZORRO_PROD_PHASE5_CYBERSTORM_MK_II, z))) {
-	    unsigned long board = z->resource.start;
-	    if (request_mem_region(board+CYBERII_ESP_ADDR,
-				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		/* Do some magic to figure out if the CyberStorm Mk II
-		 * is equipped with a SCSI controller
-		 */
-		address = (unsigned long)ZTWO_VADDR(board);
-		eregs = (struct ESP_regs *)(address + CYBERII_ESP_ADDR);
-
-		esp = esp_allocate(tpnt, (void *)board + CYBERII_ESP_ADDR, 0);
-
-		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
-		udelay(5);
-		if(esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7)) {
-			esp_deallocate(esp);
-			scsi_unregister(esp->ehost);
-			release_mem_region(board+CYBERII_ESP_ADDR,
-					   sizeof(struct ESP_regs));
-			return 0; /* Bail out if address did not hold data */
-		}
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_led_on = &dma_led_on;
-		esp->dma_led_off = &dma_led_off;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		/* SCSI chip speed */
-		esp->cfreq = 40000000;
-
-		/* The DMA registers on the CyberStorm are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		esp->dregs = (void *)(address + CYBERII_DMA_ADDR);
-
-		/* ESP register base */
-		esp->eregs = eregs;
-		
-		/* Set the command buffer */
-		esp->esp_command = cmd_buffer;
-		esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-			    "CyberStorm SCSI Mk II", esp->ehost);
-
-		/* Figure out our scsi ID on the bus */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
-	    }
-	}
-	return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the CyberStorm DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	/* I don't think there's any limit on the CyberDMA. So we use what
-	 * the ESP chip can handle (24 bit).
-	 */
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0x1000000)
-		sz = 0x1000000;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
-		esp->esp_id, ((struct cyberII_dma_registers *)
-			      (esp->dregs))->cond_reg));
-	ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
-		amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct cyberII_dma_registers *dregs = 
-		(struct cyberII_dma_registers *) esp->dregs;
-
-	cache_clear(addr, length);
-
-	addr &= ~(1);
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr3 = (addr      ) & 0xff;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct cyberII_dma_registers *dregs = 
-		(struct cyberII_dma_registers *) esp->dregs;
-
-	cache_push(addr, length);
-
-	addr |= 1;
-	dregs->dma_addr0 = (addr >> 24) & 0xff;
-	dregs->dma_addr1 = (addr >> 16) & 0xff;
-	dregs->dma_addr2 = (addr >>  8) & 0xff;
-	dregs->dma_addr3 = (addr      ) & 0xff;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	/* It's important to check the DMA IRQ bit in the correct way! */
-	return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-	((struct cyberII_dma_registers *)(esp->dregs))->ctrl_reg &= ~CYBERII_DMA_LED;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-	((struct cyberII_dma_registers *)(esp->dregs))->ctrl_reg |= CYBERII_DMA_LED;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-#define HOSTS_C
-
-int cyberII_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-
-	esp_deallocate((struct NCR_ESP *)instance->hostdata); 
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-cyberstormII",
-	.proc_info		= esp_proc_info,
-	.name			= "CyberStorm Mk II SCSI",
-	.detect			= cyberII_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= cyberII_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/dc395x.c

···
 	const unsigned srbs_per_page = PAGE_SIZE/SEGMENTX_LEN;
 	int srb_idx = 0;
 	unsigned i = 0;
-	struct SGentry *ptr;
+	struct SGentry *uninitialized_var(ptr);
 
 	for (i = 0; i < DC395x_MAX_SRB_CNT; i++)
 		acb->srb_array[i].segment_x = NULL;

drivers/scsi/dec_esp.c

···
-/*
- * dec_esp.c: Driver for SCSI chips on IOASIC based TURBOchannel DECstations
- *            and TURBOchannel PMAZ-A cards
- *
- * TURBOchannel changes by Harald Koerfgen
- * PMAZ-A support by David Airlie
- *
- * based on jazz_esp.c:
- * Copyright (C) 1997 Thomas Bogendoerfer ([e-mail])
- *
- * jazz_esp is based on David S. Miller's ESP driver and cyber_esp
- *
- * 20000819 - Small PMAZ-AA fixes by Florian Lohoff <[e-mail]>
- *            Be warned the PMAZ-AA works currently as a single card.
- *            Dont try to put multiple cards in one machine - They are
- *            both detected but it may crash under high load garbling your
- *            data.
- * 20001005	- Initialization fixes for 2.4.0-test9
- * 			  Florian Lohoff <[e-mail]>
- *
- *	Copyright (C) 2002, 2003, 2005, 2006  Maciej W. Rozycki
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/stat.h>
-#include <linux/tc.h>
-
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-
-#include <asm/dec/interrupts.h>
-#include <asm/dec/ioasic.h>
-#include <asm/dec/ioasic_addrs.h>
-#include <asm/dec/ioasic_ints.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/system.h>
-
-#define DEC_SCSI_SREG 0
-#define DEC_SCSI_DMAREG 0x40000
-#define DEC_SCSI_SRAM 0x80000
-#define DEC_SCSI_DIAG 0xC0000
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static void dma_drain(struct NCR_ESP *esp);
-static int  dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-static void dma_advance_sg(struct scsi_cmnd * sp);
-
-static void pmaz_dma_drain(struct NCR_ESP *esp);
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length);
-static void pmaz_dma_ints_off(struct NCR_ESP *esp);
-static void pmaz_dma_ints_on(struct NCR_ESP *esp);
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write);
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp);
-
-#define TC_ESP_RAM_SIZE 0x20000
-#define ESP_TGT_DMA_SIZE ((TC_ESP_RAM_SIZE/7) & ~(sizeof(int)-1))
-#define ESP_NCMD 7
-
-#define TC_ESP_DMAR_MASK  0x1ffff
-#define TC_ESP_DMAR_WRITE 0x80000000
-#define TC_ESP_DMA_ADDR(x) ((unsigned)(x) & TC_ESP_DMAR_MASK)
-
-u32 esp_virt_buffer;
-int scsi_current_length;
-
-volatile unsigned char cmd_buffer[16];
-volatile unsigned char pmaz_cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are trasfered to the ESP chip
-				 * via PIO.
-				 */
-
-static irqreturn_t scsi_dma_merr_int(int, void *);
-static irqreturn_t scsi_dma_err_int(int, void *);
-static irqreturn_t scsi_dma_int(int, void *);
-
-static struct scsi_host_template dec_esp_template = {
-	.module			= THIS_MODULE,
-	.name			= "NCR53C94",
-	.info			= esp_info,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.proc_info		= esp_proc_info,
-	.proc_name		= "dec_esp",
-	.can_queue		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= DISABLE_CLUSTERING,
-};
-
-static struct NCR_ESP *dec_esp_platform;
-
-/***************************************************************** Detection */
-static int dec_esp_platform_probe(void)
-{
-	struct NCR_ESP *esp;
-	int err = 0;
-
-	if (IOASIC) {
-		esp = esp_allocate(&dec_esp_template, NULL, 1);
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = &dma_drain;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = 0;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-		esp->dma_led_off = 0;
-		esp->dma_led_on = 0;
-
-		/* virtual DMA functions */
-		esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
-		esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
-		esp->dma_mmu_release_scsi_one = 0;
-		esp->dma_mmu_release_scsi_sgl = 0;
-		esp->dma_advance_sg = &dma_advance_sg;
-
-
-		/* SCSI chip speed */
-		esp->cfreq = 25000000;
-
-		esp->dregs = 0;
-
-		/* ESP register base */
-		esp->eregs = (void *)CKSEG1ADDR(dec_kn_slot_base +
-						IOASIC_SCSI);
-
-		/* Set the command buffer */
-		esp->esp_command = (volatile unsigned char *) cmd_buffer;
-
-		/* get virtual dma address for command buffer */
-		esp->esp_command_dvma = virt_to_phys(cmd_buffer);
-
-		esp->irq = dec_interrupt[DEC_IRQ_ASC];
-
-		esp->scsi_id = 7;
-
-		/* Check for differential SCSI-bus */
-		esp->diff = 0;
-
-		err = request_irq(esp->irq, esp_intr, IRQF_DISABLED,
-				  "ncr53c94", esp->ehost);
-		if (err)
-			goto err_alloc;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_MERR],
-				  scsi_dma_merr_int, IRQF_DISABLED,
-				  "ncr53c94 error", esp->ehost);
-		if (err)
-			goto err_irq;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_ERR],
-				  scsi_dma_err_int, IRQF_DISABLED,
-				  "ncr53c94 overrun", esp->ehost);
-		if (err)
-			goto err_irq_merr;
-		err = request_irq(dec_interrupt[DEC_IRQ_ASC_DMA], scsi_dma_int,
-				  IRQF_DISABLED, "ncr53c94 dma", esp->ehost);
-		if (err)
-			goto err_irq_err;
-
-		esp_initialize(esp);
-
-		err = scsi_add_host(esp->ehost, NULL);
-		if (err) {
-			printk(KERN_ERR "ESP: Unable to register adapter\n");
-			goto err_irq_dma;
-		}
-
-		scsi_scan_host(esp->ehost);
-
-		dec_esp_platform = esp;
-	}
-
-	return 0;
-
-err_irq_dma:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_DMA], esp->ehost);
-err_irq_err:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_ERR], esp->ehost);
-err_irq_merr:
-	free_irq(dec_interrupt[DEC_IRQ_ASC_MERR], esp->ehost);
-err_irq:
-	free_irq(esp->irq, esp->ehost);
-err_alloc:
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	return err;
-}
-
-static int __init dec_esp_probe(struct device *dev)
-{
-	struct NCR_ESP *esp;
-	resource_size_t start, len;
-	int err;
-
-	esp = esp_allocate(&dec_esp_template,  NULL, 1);
-
-	dev_set_drvdata(dev, esp);
-
-	start = to_tc_dev(dev)->resource.start;
-	len = to_tc_dev(dev)->resource.end - start + 1;
-
-	if (!request_mem_region(start, len, dev->bus_id)) {
-		printk(KERN_ERR "%s: Unable to reserve MMIO resource\n",
-		       dev->bus_id);
-		err = -EBUSY;
-		goto err_alloc;
-	}
-
-	/* Store base addr into esp struct.  */
-	esp->slot = start;
-
-	esp->dregs = 0;
-	esp->eregs = (void *)CKSEG1ADDR(start + DEC_SCSI_SREG);
-	esp->do_pio_cmds = 1;
-
-	/* Set the command buffer.  */
-	esp->esp_command = (volatile unsigned char *)pmaz_cmd_buffer;
-
-	/* Get virtual dma address for command buffer.  */
-	esp->esp_command_dvma = virt_to_phys(pmaz_cmd_buffer);
-
-	esp->cfreq = tc_get_speed(to_tc_dev(dev)->bus);
-
-	esp->irq = to_tc_dev(dev)->interrupt;
-
-	/* Required functions.  */
-	esp->dma_bytes_sent = &dma_bytes_sent;
-	esp->dma_can_transfer = &dma_can_transfer;
-	esp->dma_dump_state = &dma_dump_state;
-	esp->dma_init_read = &pmaz_dma_init_read;
-	esp->dma_init_write = &pmaz_dma_init_write;
-	esp->dma_ints_off = &pmaz_dma_ints_off;
-	esp->dma_ints_on = &pmaz_dma_ints_on;
-	esp->dma_irq_p = &dma_irq_p;
-	esp->dma_ports_p = &dma_ports_p;
-	esp->dma_setup = &pmaz_dma_setup;
-
-	/* Optional functions.  */
-	esp->dma_barrier = 0;
-	esp->dma_drain = &pmaz_dma_drain;
-	esp->dma_invalidate = 0;
-	esp->dma_irq_entry = 0;
-	esp->dma_irq_exit = 0;
-	esp->dma_poll = 0;
-	esp->dma_reset = 0;
-	esp->dma_led_off = 0;
-	esp->dma_led_on = 0;
-
-	esp->dma_mmu_get_scsi_one = pmaz_dma_mmu_get_scsi_one;
-	esp->dma_mmu_get_scsi_sgl = 0;
-	esp->dma_mmu_release_scsi_one = 0;
-	esp->dma_mmu_release_scsi_sgl = 0;
-	esp->dma_advance_sg = 0;
-
-	err = request_irq(esp->irq, esp_intr, IRQF_DISABLED, "PMAZ_AA",
-			  esp->ehost);
-	if (err) {
-		printk(KERN_ERR "%s: Unable to get IRQ %d\n",
-		       dev->bus_id, esp->irq);
-		goto err_resource;
-	}
-
-	esp->scsi_id = 7;
-	esp->diff = 0;
-	esp_initialize(esp);
-
-	err = scsi_add_host(esp->ehost, dev);
-	if (err) {
-		printk(KERN_ERR "%s: Unable to register adapter\n",
-		       dev->bus_id);
-		goto err_irq;
-	}
-
-	scsi_scan_host(esp->ehost);
-
-	return 0;
-
-err_irq:
-	free_irq(esp->irq, esp->ehost);
-
-err_resource:
-	release_mem_region(start, len);
-
-err_alloc:
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	return err;
-}
-
-static void __exit dec_esp_platform_remove(void)
-{
-	struct NCR_ESP *esp = dec_esp_platform;
-
-	free_irq(esp->irq, esp->ehost);
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-	dec_esp_platform = NULL;
-}
-
-static void __exit dec_esp_remove(struct device *dev)
-{
-	struct NCR_ESP *esp = dev_get_drvdata(dev);
-
-	free_irq(esp->irq, esp->ehost);
-	esp_deallocate(esp);
-	scsi_host_put(esp->ehost);
-}
-
-
-/************************************************************* DMA Functions */
-static irqreturn_t scsi_dma_merr_int(int irq, void *dev_id)
-{
-	printk("Got unexpected SCSI DMA Interrupt! < ");
-	printk("SCSI_DMA_MEMRDERR ");
-	printk(">\n");
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_err_int(int irq, void *dev_id)
-{
-	/* empty */
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t scsi_dma_int(int irq, void *dev_id)
-{
-	u32 scsi_next_ptr;
-
-	scsi_next_ptr = ioasic_read(IO_REG_SCSI_DMA_P);
-
-	/* next page */
-	scsi_next_ptr = (((scsi_next_ptr >> 3) + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-	fast_iob();
-
-	return IRQ_HANDLED;
-}
-
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	return fifo_count;
-}
-
-static void dma_drain(struct NCR_ESP *esp)
-{
-	u32 nw, data0, data1, scsi_data_ptr;
-	u16 *p;
-
-	nw = ioasic_read(IO_REG_SCSI_SCR);
-
-	/*
-	 * Is there something in the dma buffers left?
-	 */
-	if (nw) {
-		scsi_data_ptr = ioasic_read(IO_REG_SCSI_DMA_P) >> 3;
-		p = phys_to_virt(scsi_data_ptr);
-		switch (nw) {
-		case 1:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			p[0] = data0 & 0xffff;
-			break;
-		case 2:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			p[0] = data0 & 0xffff;
-			p[1] = (data0 >> 16) & 0xffff;
-			break;
-		case 3:
-			data0 = ioasic_read(IO_REG_SCSI_SDR0);
-			data1 = ioasic_read(IO_REG_SCSI_SDR1);
-			p[0] = data0 & 0xffff;
-			p[1] = (data0 >> 16) & 0xffff;
-			p[2] = data1 & 0xffff;
-			break;
-		default:
-			printk("Strange: %d words in dma buffer left\n", nw);
-			break;
-		}
-	}
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	return sp->SCp.this_residual;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-}
-
-static void dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	u32 scsi_next_ptr, ioasic_ssr;
-	unsigned long flags;
-
-	if (vaddress & 3)
-		panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
-	dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
-	spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
-	fast_mb();
-	ioasic_ssr = ioasic_read(IO_REG_SSR);
-
-	ioasic_ssr &= ~IO_SSR_SCSI_DMA_EN;
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_wmb();
-	ioasic_write(IO_REG_SCSI_SCR, 0);
-	ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
-	/* prepare for next page */
-	scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
-	ioasic_ssr |= (IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
-	fast_wmb();
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_iob();
-	spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	u32 scsi_next_ptr, ioasic_ssr;
-	unsigned long flags;
-
-	if (vaddress & 3)
-		panic("dec_esp.c: unable to handle partial word transfers, yet...");
-
-	dma_cache_wback_inv((unsigned long) phys_to_virt(vaddress), length);
-
-	spin_lock_irqsave(&ioasic_ssr_lock, flags);
-
-	fast_mb();
-	ioasic_ssr = ioasic_read(IO_REG_SSR);
-
-	ioasic_ssr &= ~(IO_SSR_SCSI_DMA_DIR | IO_SSR_SCSI_DMA_EN);
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_wmb();
-	ioasic_write(IO_REG_SCSI_SCR, 0);
-	ioasic_write(IO_REG_SCSI_DMA_P, vaddress << 3);
-
-	/* prepare for next page */
-	scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
-	ioasic_write(IO_REG_SCSI_DMA_BP, scsi_next_ptr);
-
-	ioasic_ssr |= IO_SSR_SCSI_DMA_EN;
-	fast_wmb();
-	ioasic_write(IO_REG_SSR, ioasic_ssr);
-
-	fast_iob();
-	spin_unlock_irqrestore(&ioasic_ssr_lock, flags);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(dec_interrupt[DEC_IRQ_ASC_DMA]);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	return (esp->eregs->esp_status & ESP_STAT_INTR);
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	/*
-	 * FIXME: what's this good for?
-	 */
-	return 1;
-}
-
-static void dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
-	/*
-	 * DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if (write)
-		dma_init_read(esp, addr, count);
-	else
-		dma_init_write(esp, addr, count);
-}
-
-static void dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	int sz = sp->SCp.buffers_residual;
-	struct scatterlist *sg = sp->SCp.buffer;
-
-	while (sz >= 0) {
-		sg[sz].dma_address = page_to_phys(sg[sz].page) + sg[sz].offset;
-		sz--;
-	}
-	sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void dma_advance_sg(struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)(sp->SCp.buffer->dma_address);
-}
-
-static void pmaz_dma_drain(struct NCR_ESP *esp)
-{
-	memcpy(phys_to_virt(esp_virt_buffer),
-	       (void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
-				  ESP_TGT_DMA_SIZE),
-	       scsi_current_length);
-}
-
-static void pmaz_dma_init_read(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	volatile u32 *dmareg =
-		(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
-	if (length > ESP_TGT_DMA_SIZE)
-		length = ESP_TGT_DMA_SIZE;
-
-	*dmareg = TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
-	iob();
-
-	esp_virt_buffer = vaddress;
-	scsi_current_length = length;
-}
-
-static void pmaz_dma_init_write(struct NCR_ESP *esp, u32 vaddress, int length)
-{
-	volatile u32 *dmareg =
-		(volatile u32 *)CKSEG1ADDR(esp->slot + DEC_SCSI_DMAREG);
-
-	memcpy((void *)CKSEG1ADDR(esp->slot + DEC_SCSI_SRAM +
-				  ESP_TGT_DMA_SIZE),
-	       phys_to_virt(vaddress), length);
-
-	wmb();
-	*dmareg = TC_ESP_DMAR_WRITE | TC_ESP_DMA_ADDR(ESP_TGT_DMA_SIZE);
-
-	iob();
-}
-
-static void pmaz_dma_ints_off(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_ints_on(struct NCR_ESP *esp)
-{
-}
-
-static void pmaz_dma_setup(struct NCR_ESP *esp, u32 addr, int count, int write)
-{
-	/*
-	 * DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if (write)
-		pmaz_dma_init_read(esp, addr, count);
-	else
-		pmaz_dma_init_write(esp, addr, count);
-}
-
-static void pmaz_dma_mmu_get_scsi_one(struct NCR_ESP *esp, struct scsi_cmnd * sp)
-{
-	sp->SCp.ptr = (char *)virt_to_phys(sp->request_buffer);
-}
-
-
-#ifdef CONFIG_TC
-static int __init dec_esp_tc_probe(struct device *dev);
-static int __exit dec_esp_tc_remove(struct device *dev);
-
-static const struct tc_device_id dec_esp_tc_table[] = {
-        { "DEC     ", "PMAZ-AA " },
-        { }
-};
-MODULE_DEVICE_TABLE(tc, dec_esp_tc_table);
-
-static struct tc_driver dec_esp_tc_driver = {
-        .id_table       = dec_esp_tc_table,
-        .driver         = {
-                .name   = "dec_esp",
-                .bus    = &tc_bus_type,
-                .probe  = dec_esp_tc_probe,
-                .remove = __exit_p(dec_esp_tc_remove),
-        },
-};
-
-static int __init dec_esp_tc_probe(struct device *dev)
-{
-	int status = dec_esp_probe(dev);
-	if (!status)
-		get_device(dev);
-	return status;
-}
-
-static int __exit dec_esp_tc_remove(struct device *dev)
-{
-	put_device(dev);
-	dec_esp_remove(dev);
-	return 0;
-}
-#endif
-
-static int __init dec_esp_init(void)
-{
-	int status;
-
-	status = tc_register_driver(&dec_esp_tc_driver);
-	if (!status)
-		dec_esp_platform_probe();
-
-	if (nesps) {
-		pr_info("ESP: Total of %d ESP hosts found, "
-			"%d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-	}
-
-	return status;
-}
-
-static void __exit dec_esp_exit(void)
-{
-	dec_esp_platform_remove();
-	tc_unregister_driver(&dec_esp_tc_driver);
-}
-
-
-module_init(dec_esp_init);
-module_exit(dec_esp_exit);

drivers/scsi/fastlane.c

···
-/* fastlane.c: Driver for Phase5's Fastlane SCSI Controller.
- *
- * Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * This driver is based on the CyberStorm driver, hence the occasional
- * reference to CyberStorm.
- *
- * Betatesting & crucial adjustments by
- *        Patrik Rak ([e-mail])
- *
- */
-
-/* TODO:
- *
- * o According to the doc from laire, it is required to reset the DMA when
- *   the transfer is done. ATM we reset DMA just before every new 
- *   dma_init_(read|write).
- *
- * 1) Figure out how to make a cleaner merge with the sparc driver with regard
- *    to the caches and the Sparc MMU mapping.
- * 2) Make as few routines required outside the generic driver. A lot of the
- *    routines in this file used to be inline!
- */
-
-#include <linux/module.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#include <asm/pgtable.h>
-
-/* Such day has just come... */
-#if 0
-/* Let this defined unless you really need to enable DMA IRQ one day */
-#define NODMAIRQ
-#endif
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define FASTLANE_ESP_ADDR 0x1000001
-#define FASTLANE_DMA_ADDR 0x1000041
-
-
-/* The Fastlane DMA interface */
-struct fastlane_dma_registers {
-	volatile unsigned char cond_reg;	/* DMA status  (ro) [0x0000] */
-#define ctrl_reg  cond_reg			/* DMA control (wo) [0x0000] */
-	unsigned char dmapad1[0x3f];
-	volatile unsigned char clear_strobe;    /* DMA clear   (wo) [0x0040] */
-};
-
-
-/* DMA status bits */
-#define FASTLANE_DMA_MINT  0x80
-#define FASTLANE_DMA_IACT  0x40
-#define FASTLANE_DMA_CREQ  0x20
-
-/* DMA control bits */
-#define FASTLANE_DMA_FCODE 0xa0
-#define FASTLANE_DMA_MASK  0xf3
-#define FASTLANE_DMA_LED   0x10	/* HD led control 1 = on */
-#define FASTLANE_DMA_WRITE 0x08 /* 1 = write */
-#define FASTLANE_DMA_ENABLE 0x04 /* Enable DMA */
-#define FASTLANE_DMA_EDI   0x02	/* Enable DMA IRQ ? */
-#define FASTLANE_DMA_ESI   0x01	/* Enable SCSI IRQ */
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddr, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_irq_exit(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static unsigned char ctrl_data = 0;	/* Keep backup of the stuff written
-				 * to ctrl_reg. Always write a copy
-				 * to this register when writing to
-				 * the hardware register!
-				 */
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-static inline void dma_clear(struct NCR_ESP *esp)
-{
-	struct fastlane_dma_registers *dregs =
-		(struct fastlane_dma_registers *) (esp->dregs);
-	unsigned long *t;
-
-	ctrl_data = (ctrl_data & FASTLANE_DMA_MASK);
-	dregs->ctrl_reg = ctrl_data;
-
-	t = (unsigned long *)(esp->edev);
-
-	dregs->clear_strobe = 0;
-	*t = 0 ;
-}
-
-/***************************************************************** Detection */
-int __init fastlane_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-
-	if ((z = zorro_find_device(ZORRO_PROD_PHASE5_BLIZZARD_1230_II_FASTLANE_Z3_CYBERSCSI_CYBERSTORM060, z))) {
-	    unsigned long board = z->resource.start;
-	    if (request_mem_region(board+FASTLANE_ESP_ADDR,
-				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		/* Check if this is really a fastlane controller. The problem
-		 * is that also the cyberstorm and blizzard controllers use
-		 * this ID value. Fortunately only Fastlane maps in Z3 space
-		 */
-		if (board < 0x1000000) {
-			goto err_release;
-		}
-		esp = esp_allocate(tpnt, (void *)board + FASTLANE_ESP_ADDR, 0);
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = 0;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = &dma_irq_exit;
-		esp->dma_led_on = &dma_led_on;
-		esp->dma_led_off = &dma_led_off;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		/* Initialize the portBits (enable IRQs) */
-		ctrl_data = (FASTLANE_DMA_FCODE |
-#ifndef NODMAIRQ
-			     FASTLANE_DMA_EDI |
-#endif
-			     FASTLANE_DMA_ESI);
-			
-
-		/* SCSI chip clock */
-		esp->cfreq = 40000000;
-
-
-		/* Map the physical address space into virtual kernel space */
-		address = (unsigned long)
-			z_ioremap(board, z->resource.end-board+1);
-
-		if(!address){
-			printk("Could not remap Fastlane controller memory!");
-			goto err_unregister;
-		}
-
-
-		/* The DMA registers on the Fastlane are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		esp->dregs = (void *)(address + FASTLANE_DMA_ADDR);
-
-		/* ESP register base */
-		esp->eregs = (struct ESP_regs *)(address + FASTLANE_ESP_ADDR);
-
-		/* Board base */
-		esp->edev = (void *) address;
-		
-		/* Set the command buffer */
-		esp->esp_command = cmd_buffer;
-		esp->esp_command_dvma = virt_to_bus((void *)cmd_buffer);
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		esp->slot = board+FASTLANE_ESP_ADDR;
-		if (request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-				"Fastlane SCSI", esp->ehost)) {
-			printk(KERN_WARNING "Fastlane: Could not get IRQ%d, aborting.\n", IRQ_AMIGA_PORTS);
-			goto err_unmap;
-		}			
-
-		/* Controller ID */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		dma_clear(esp);
-		esp_initialize(esp);
-
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps, esps_in_use);
-		esps_running = esps_in_use;
-		return esps_in_use;
-	    }
-	}
-	return 0;
-
- err_unmap:
-	z_iounmap((void *)address);
- err_unregister:
-	scsi_unregister (esp->ehost);
- err_release:
-	release_mem_region(z->resource.start+FASTLANE_ESP_ADDR,
-			   sizeof(struct ESP_regs));
-	return 0;
-}
-
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the Fastlane DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0xfffc)
-		sz = 0xfffc;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
-		esp->esp_id, ((struct fastlane_dma_registers *)
-			      (esp->dregs))->cond_reg));
-	ESPLOG(("intreq:<%04x>, intena:<%04x>\n",
-		amiga_custom.intreqr, amiga_custom.intenar));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct fastlane_dma_registers *dregs = 
-		(struct fastlane_dma_registers *) (esp->dregs);
-	unsigned long *t;
-	
-	cache_clear(addr, length);
-
-	dma_clear(esp);
-
-	t = (unsigned long *)((addr & 0x00ffffff) + esp->edev);
-
-	dregs->clear_strobe = 0;
-	*t = addr;
-
-	ctrl_data = (ctrl_data & FASTLANE_DMA_MASK) | FASTLANE_DMA_ENABLE;
-	dregs->ctrl_reg = ctrl_data;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	struct fastlane_dma_registers *dregs = 
-		(struct fastlane_dma_registers *) (esp->dregs);
-	unsigned long *t;
-
-	cache_push(addr, length);
-
-	dma_clear(esp);
-
-	t = (unsigned long *)((addr & 0x00ffffff) + (esp->edev));
-
-	dregs->clear_strobe = 0;
-	*t = addr;
-
-	ctrl_data = ((ctrl_data & FASTLANE_DMA_MASK) | 
-		     FASTLANE_DMA_ENABLE |
-		     FASTLANE_DMA_WRITE);
-	dregs->ctrl_reg = ctrl_data;
-}
-
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static void dma_irq_exit(struct NCR_ESP *esp)
-{
-	struct fastlane_dma_registers *dregs = 
-		(struct fastlane_dma_registers *) (esp->dregs);
-
-	dregs->ctrl_reg = ctrl_data & ~(FASTLANE_DMA_EDI|FASTLANE_DMA_ESI);
-#ifdef __mc68000__
-	nop();
-#endif
-	dregs->ctrl_reg = ctrl_data;
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	struct fastlane_dma_registers *dregs = 
-		(struct fastlane_dma_registers *) (esp->dregs);
-	unsigned char dma_status;
-
-	dma_status = dregs->cond_reg;
-
-	if(dma_status & FASTLANE_DMA_IACT)
-		return 0;	/* not our IRQ */
-
-	/* Return non-zero if ESP requested IRQ */
-	return (
-#ifndef NODMAIRQ
-	   (dma_status & FASTLANE_DMA_CREQ) &&
-#endif
-	   (!(dma_status & FASTLANE_DMA_MINT)) &&
-	   (esp_read(((struct ESP_regs *) (esp->eregs))->esp_status) & ESP_STAT_INTR));
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-	ctrl_data &= ~FASTLANE_DMA_LED;
-	((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-	ctrl_data |= FASTLANE_DMA_LED;
-	((struct fastlane_dma_registers *)(esp->dregs))->ctrl_reg = ctrl_data;
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-#define HOSTS_C
-
-int fastlane_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-	esp_deallocate((struct NCR_ESP *)instance->hostdata);
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-fastlane",
-	.proc_info		= esp_proc_info,
-	.name			= "Fastlane SCSI",
-	.detect			= fastlane_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= fastlane_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/iscsi_tcp.c

···
 	int rc;
 
 	if (tcp_conn->in.datalen) {
-		printk(KERN_ERR "iscsi_tcp: invalid R2t with datalen %d\n",
-		       tcp_conn->in.datalen);
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "invalid R2t with datalen %d\n",
+				  tcp_conn->in.datalen);
 		return ISCSI_ERR_DATALEN;
 	}
 
···
 	iscsi_update_cmdsn(session, (struct iscsi_nopin*)rhdr);
 
 	if (!ctask->sc || session->state != ISCSI_STATE_LOGGED_IN) {
-		printk(KERN_INFO "iscsi_tcp: dropping R2T itt %d in "
-		       "recovery...\n", ctask->itt);
+		iscsi_conn_printk(KERN_INFO, conn,
+				  "dropping R2T itt %d in recovery.\n",
+				  ctask->itt);
 		return 0;
 	}
 
···
 	r2t->exp_statsn = rhdr->statsn;
 	r2t->data_length = be32_to_cpu(rhdr->data_length);
 	if (r2t->data_length == 0) {
-		printk(KERN_ERR "iscsi_tcp: invalid R2T with zero data len\n");
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "invalid R2T with zero data len\n");
 		__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
 			    sizeof(void*));
 		return ISCSI_ERR_DATALEN;
···
 
 	r2t->data_offset = be32_to_cpu(rhdr->data_offset);
 	if (r2t->data_offset + r2t->data_length > scsi_bufflen(ctask->sc)) {
-		printk(KERN_ERR "iscsi_tcp: invalid R2T with data len %u at "
-		       "offset %u and total length %d\n", r2t->data_length,
-		       r2t->data_offset, scsi_bufflen(ctask->sc));
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "invalid R2T with data len %u at offset %u "
+				  "and total length %d\n", r2t->data_length,
+				  r2t->data_offset, scsi_bufflen(ctask->sc));
 		__kfifo_put(tcp_ctask->r2tpool.queue, (void*)&r2t,
 			    sizeof(void*));
 		return ISCSI_ERR_DATALEN;
···
 	/* verify PDU length */
 	tcp_conn->in.datalen = ntoh24(hdr->dlength);
 	if (tcp_conn->in.datalen > conn->max_recv_dlength) {
-		printk(KERN_ERR "iscsi_tcp: datalen %d > %d\n",
-		       tcp_conn->in.datalen, conn->max_recv_dlength);
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "iscsi_tcp: datalen %d > %d\n",
+				  tcp_conn->in.datalen, conn->max_recv_dlength);
 		return ISCSI_ERR_DATALEN;
 	}
 
···
 		 * For now we fail until we find a vendor that needs it
 		 */
 		if (ISCSI_DEF_MAX_RECV_SEG_LEN < tcp_conn->in.datalen) {
-			printk(KERN_ERR "iscsi_tcp: received buffer of len %u "
-			      "but conn buffer is only %u (opcode %0x)\n",
-			      tcp_conn->in.datalen,
-			      ISCSI_DEF_MAX_RECV_SEG_LEN, opcode);
+			iscsi_conn_printk(KERN_ERR, conn,
+					  "iscsi_tcp: received buffer of "
+					  "len %u but conn buffer is only %u "
+					  "(opcode %0x)\n",
+					  tcp_conn->in.datalen,
+					  ISCSI_DEF_MAX_RECV_SEG_LEN, opcode);
 			rc = ISCSI_ERR_PROTO;
 			break;
 		}
···
 	tcp_conn->tx_hash.tfm = crypto_alloc_hash("crc32c", 0,
 						  CRYPTO_ALG_ASYNC);
 	tcp_conn->tx_hash.flags = 0;
-	if (IS_ERR(tcp_conn->tx_hash.tfm)) {
-		printk(KERN_ERR "Could not create connection due to crc32c "
-		       "loading error %ld. Make sure the crc32c module is "
-		       "built as a module or into the kernel\n",
-			PTR_ERR(tcp_conn->tx_hash.tfm));
+	if (IS_ERR(tcp_conn->tx_hash.tfm))
 		goto free_tcp_conn;
-	}
 
 	tcp_conn->rx_hash.tfm = crypto_alloc_hash("crc32c", 0,
 						  CRYPTO_ALG_ASYNC);
 	tcp_conn->rx_hash.flags = 0;
-	if (IS_ERR(tcp_conn->rx_hash.tfm)) {
-		printk(KERN_ERR "Could not create connection due to crc32c "
-		       "loading error %ld. Make sure the crc32c module is "
-		       "built as a module or into the kernel\n",
-			PTR_ERR(tcp_conn->rx_hash.tfm));
+	if (IS_ERR(tcp_conn->rx_hash.tfm))
 		goto free_tx_tfm;
-	}
 
 	return cls_conn;
 
 free_tx_tfm:
 	crypto_free_hash(tcp_conn->tx_hash.tfm);
 free_tcp_conn:
+	iscsi_conn_printk(KERN_ERR, conn,
+			  "Could not create connection due to crc32c "
+			  "loading error. Make sure the crc32c "
+			  "module is built as a module or into the "
+			  "kernel\n");
 	kfree(tcp_conn);
 tcp_conn_alloc_fail:
 	iscsi_conn_teardown(cls_conn);
···
 	/* lookup for existing socket */
 	sock = sockfd_lookup((int)transport_eph, &err);
 	if (!sock) {
-		printk(KERN_ERR "iscsi_tcp: sockfd_lookup failed %d\n", err);
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "sockfd_lookup failed %d\n", err);
 		return -EEXIST;
 	}
 	/*

drivers/scsi/libiscsi.c

···
 	hdr->opcode = ISCSI_OP_SCSI_CMD;
 	hdr->flags = ISCSI_ATTR_SIMPLE;
 	int_to_scsilun(sc->device->lun, (struct scsi_lun *)hdr->lun);
-	hdr->itt = build_itt(ctask->itt, conn->id, session->age);
+	hdr->itt = build_itt(ctask->itt, session->age);
 	hdr->data_length = cpu_to_be32(scsi_bufflen(sc));
 	hdr->cmdsn = cpu_to_be32(session->cmdsn);
 	session->cmdsn++;
···
 
 		if (datalen < 2) {
 invalid_datalen:
-			printk(KERN_ERR "iscsi: Got CHECK_CONDITION but "
-			       "invalid data buffer size of %d\n", datalen);
+			iscsi_conn_printk(KERN_ERR,  conn,
+					 "Got CHECK_CONDITION but invalid data "
+					 "buffer size of %d\n", datalen);
 			sc->result = DID_BAD_TARGET << 16;
 			goto out;
 		}
···
 
 	mtask = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0);
 	if (!mtask) {
-		printk(KERN_ERR "Could not send nopout\n");
+		iscsi_conn_printk(KERN_ERR, conn, "Could not send nopout\n");
 		return;
 	}
 
···
 		if (ntoh24(reject->dlength) >= sizeof(struct iscsi_hdr)) {
 			memcpy(&rejected_pdu, data, sizeof(struct iscsi_hdr));
 			itt = get_itt(rejected_pdu.itt);
-			printk(KERN_ERR "itt 0x%x had pdu (op 0x%x) rejected "
-				"due to DataDigest error.\n", itt,
-				rejected_pdu.opcode);
+			iscsi_conn_printk(KERN_ERR, conn,
+					  "itt 0x%x had pdu (op 0x%x) rejected "
+					  "due to DataDigest error.\n", itt,
+					  rejected_pdu.opcode);
 		}
 	}
 	return 0;
···
  * queuecommand or send generic. session lock must be held and verify
  * itt must have been called.
  */
-int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
-			 char *data, int datalen)
+static int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
+				char *data, int datalen)
 {
 	struct iscsi_session *session = conn->session;
 	int opcode = hdr->opcode & ISCSI_OPCODE_MASK, rc = 0;
···
 
 	return rc;
 }
-EXPORT_SYMBOL_GPL(__iscsi_complete_pdu);
 
 int iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
 		       char *data, int datalen)
···
 	if (hdr->itt != RESERVED_ITT) {
 		if (((__force u32)hdr->itt & ISCSI_AGE_MASK) !=
 		    (session->age << ISCSI_AGE_SHIFT)) {
-			printk(KERN_ERR "iscsi: received itt %x expected "
-				"session age (%x)\n", (__force u32)hdr->itt,
-				session->age & ISCSI_AGE_MASK);
+			iscsi_conn_printk(KERN_ERR, conn,
+					  "received itt %x expected session "
+					  "age (%x)\n", (__force u32)hdr->itt,
+					  session->age & ISCSI_AGE_MASK);
 			return ISCSI_ERR_BAD_ITT;
 		}
 
-		if (((__force u32)hdr->itt & ISCSI_CID_MASK) !=
-		    (conn->id << ISCSI_CID_SHIFT)) {
-			printk(KERN_ERR "iscsi: received itt %x, expected "
-				"CID (%x)\n", (__force u32)hdr->itt, conn->id);
-			return ISCSI_ERR_BAD_ITT;
-		}
 		itt = get_itt(hdr->itt);
 	} else
 		itt = ~0U;
···
 		ctask = session->cmds[itt];
 
 		if (!ctask->sc) {
-			printk(KERN_INFO "iscsi: dropping ctask with "
-			       "itt 0x%x\n", ctask->itt);
+			iscsi_conn_printk(KERN_INFO, conn, "dropping ctask "
+					  "with itt 0x%x\n", ctask->itt);
 			/* force drop */
 			return ISCSI_ERR_NO_SCSI_CMD;
 		}
 
 		if (ctask->sc->SCp.phase != session->age) {
-			printk(KERN_ERR "iscsi: ctask's session age %d, "
-				"expected %d\n", ctask->sc->SCp.phase,
-				session->age);
+			iscsi_conn_printk(KERN_ERR, conn,
+					  "iscsi: ctask's session age %d, "
+					  "expected %d\n", ctask->sc->SCp.phase,
+					  session->age);
 			return ISCSI_ERR_SESSION_FAILED;
 		}
 	}
···
 	 */
 	nop->cmdsn = cpu_to_be32(session->cmdsn);
 	if (hdr->itt != RESERVED_ITT) {
-		hdr->itt = build_itt(mtask->itt, conn->id, session->age);
+		hdr->itt = build_itt(mtask->itt, session->age);
 		/*
 		 * TODO: We always use immediate, so we never hit this.
 		 * If we start to send tmfs or nops as non-immediate then
···
 	FAILURE_SESSION_IN_RECOVERY,
 	FAILURE_SESSION_RECOVERY_TIMEOUT,
 	FAILURE_SESSION_LOGGING_OUT,
+	FAILURE_SESSION_NOT_READY,
 };
 
 int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
···
 	session = iscsi_hostdata(host->hostdata);
 	spin_lock(&session->lock);
 
+	reason = iscsi_session_chkready(session_to_cls(session));
+	if (reason) {
+		sc->result = reason;
+		goto fault;
+	}
+
 	/*
 	 * ISCSI_STATE_FAILED is a temp. state. The recovery
 	 * code will decide what is best to do with command queued
···
 		switch (session->state) {
 		case ISCSI_STATE_IN_RECOVERY:
 			reason = FAILURE_SESSION_IN_RECOVERY;
-			goto reject;
+			sc->result = DID_IMM_RETRY << 16;
+			break;
 		case ISCSI_STATE_LOGGING_OUT:
 			reason = FAILURE_SESSION_LOGGING_OUT;
-			goto reject;
+			sc->result = DID_IMM_RETRY << 16;
+			break;
 		case ISCSI_STATE_RECOVERY_FAILED:
 			reason = FAILURE_SESSION_RECOVERY_TIMEOUT;
+			sc->result = DID_NO_CONNECT << 16;
 			break;
 		case ISCSI_STATE_TERMINATE:
 			reason = FAILURE_SESSION_TERMINATE;
+			sc->result = DID_NO_CONNECT << 16;
 			break;
 		default:
 			reason = FAILURE_SESSION_FREED;
+			sc->result = DID_NO_CONNECT << 16;
 		}
 		goto fault;
 	}
···
 	conn = session->leadconn;
 	if (!conn) {
 		reason = FAILURE_SESSION_FREED;
+		sc->result = DID_NO_CONNECT << 16;
 		goto fault;
 	}
 
···
 
 fault:
 	spin_unlock(&session->lock);
-	printk(KERN_ERR "iscsi: cmd 0x%x is not queued (%d)\n",
-	       sc->cmnd[0], reason);
-	sc->result = (DID_NO_CONNECT << 16);
+	debug_scsi("iscsi: cmd 0x%x is not queued (%d)\n", sc->cmnd[0], reason);
 	scsi_set_resid(sc, scsi_bufflen(sc));
 	sc->scsi_done(sc);
 	spin_lock(host->host_lock);
···
 	mutex_lock(&session->eh_mutex);
 	spin_lock_bh(&session->lock);
 	if (session->state == ISCSI_STATE_LOGGED_IN)
-		printk(KERN_INFO "iscsi: host reset succeeded\n");
+		iscsi_session_printk(KERN_INFO, session,
+				     "host reset succeeded\n");
 	else
 		goto failed;
 	spin_unlock_bh(&session->lock);
···
  * Fail commands. session lock held and recv side suspended and xmit
  * thread flushed
  */
-static void fail_all_commands(struct iscsi_conn *conn, unsigned lun)
+static void fail_all_commands(struct iscsi_conn *conn, unsigned lun,
+			      int error)
 {
 	struct iscsi_cmd_task *ctask, *tmp;
 
···
 		if (lun == ctask->sc->device->lun || lun == -1) {
 			debug_scsi("failing pending sc %p itt 0x%x\n",
 				   ctask->sc, ctask->itt);
-			fail_command(conn, ctask, DID_BUS_BUSY << 16);
+			fail_command(conn, ctask, error << 16);
 		}
 	}
 
···
 		if (lun == ctask->sc->device->lun || lun == -1) {
 			debug_scsi("failing requeued sc %p itt 0x%x\n",
 				   ctask->sc, ctask->itt);
-			fail_command(conn, ctask, DID_BUS_BUSY << 16);
+			fail_command(conn, ctask, error << 16);
 		}
 	}
 
···
 	last_recv = conn->last_recv;
 	if (time_before_eq(last_recv + timeout + (conn->ping_timeout * HZ),
 			   jiffies)) {
-		printk(KERN_ERR "ping timeout of %d secs expired, "
-		       "last rx %lu, last ping %lu, now %lu\n",
-		       conn->ping_timeout, last_recv,
-		       conn->last_ping, jiffies);
+		iscsi_conn_printk(KERN_ERR, conn, "ping timeout of %d secs "
+				  "expired, last rx %lu, last ping %lu, "
+				  "now %lu\n", conn->ping_timeout, last_recv,
+				  conn->last_ping, jiffies);
 		spin_unlock(&session->lock);
 		iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
 		return;
···
 			iscsi_send_nopout(conn, NULL);
 		}
 		next_timeout = last_recv + timeout + (conn->ping_timeout * HZ);
-	} else {
+	} else
 		next_timeout = last_recv + timeout;
-	}
 
-	if (next_timeout) {
-		debug_scsi("Setting next tmo %lu\n", next_timeout);
-		mod_timer(&conn->transport_timer, next_timeout);
-	}
+	debug_scsi("Setting next tmo %lu\n", next_timeout);
+	mod_timer(&conn->transport_timer, next_timeout);
 done:
 	spin_unlock(&session->lock);
 }
···
 	/* need to grab the recv lock then session lock */
 	write_lock_bh(conn->recv_lock);
 	spin_lock(&session->lock);
-	fail_all_commands(conn, sc->device->lun);
+	fail_all_commands(conn, sc->device->lun, DID_ERROR);
 	conn->tmf_state = TMF_INITIAL;
 	spin_unlock(&session->lock);
 	write_unlock_bh(conn->recv_lock);
···
 		}
 		spin_unlock_irqrestore(session->host->host_lock, flags);
 		msleep_interruptible(500);
-		printk(KERN_INFO "iscsi: scsi conn_destroy(): host_busy %d "
-		       "host_failed %d\n", session->host->host_busy,
-		       session->host->host_failed);
+		iscsi_conn_printk(KERN_INFO, conn, "iscsi conn_destroy(): "
+				  "host_busy %d host_failed %d\n",
+				  session->host->host_busy,
+				  session->host->host_failed);
 		/*
 		 * force eh_abort() to unblock
 		 */
···
 	struct iscsi_session *session = conn->session;
 
 	if (!session) {
-		printk(KERN_ERR "iscsi: can't start unbound connection\n");
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "can't start unbound connection\n");
 		return -EPERM;
 	}
 
 	if ((session->imm_data_en || !session->initial_r2t_en) &&
 	     session->first_burst > session->max_burst) {
-		printk("iscsi: invalid burst lengths: "
-		       "first_burst %d max_burst %d\n",
-		       session->first_burst, session->max_burst);
+		iscsi_conn_printk(KERN_INFO, conn, "invalid burst lengths: "
+				  "first_burst %d max_burst %d\n",
+				  session->first_burst, session->max_burst);
 		return -EINVAL;
 	}
 
 	if (conn->ping_timeout && !conn->recv_timeout) {
-		printk(KERN_ERR "iscsi: invalid recv timeout of zero "
-		      "Using 5 seconds\n.");
+		iscsi_conn_printk(KERN_ERR, conn, "invalid recv timeout of "
+				  "zero. Using 5 seconds\n.");
 		conn->recv_timeout = 5;
 	}
 
 	if (conn->recv_timeout && !conn->ping_timeout) {
-		printk(KERN_ERR "iscsi: invalid ping timeout of zero "
-		      "Using 5 seconds.\n");
+		iscsi_conn_printk(KERN_ERR, conn, "invalid ping timeout of "
+				  "zero. Using 5 seconds.\n");
 		conn->ping_timeout = 5;
 	}
 
···
 		conn->stop_stage = 0;
 		conn->tmf_state = TMF_INITIAL;
 		session->age++;
-		spin_unlock_bh(&session->lock);
-
-		iscsi_unblock_session(session_to_cls(session));
-		wake_up(&conn->ehwait);
-		return 0;
+		if (session->age == 16)
+			session->age = 0;
+		break;
 	case STOP_CONN_TERM:
 		conn->stop_stage = 0;
 		break;
···
 	}
 	spin_unlock_bh(&session->lock);
 
+	iscsi_unblock_session(session_to_cls(session));
+	wake_up(&conn->ehwait);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(iscsi_conn_start);
···
 	 * flush queues.
 	 */
 	spin_lock_bh(&session->lock);
-	fail_all_commands(conn, -1);
+	fail_all_commands(conn, -1,
+			STOP_CONN_RECOVER ? DID_BUS_BUSY : DID_ERROR);
 	flush_control_queues(session, conn);
 	spin_unlock_bh(&session->lock);
 	mutex_unlock(&session->eh_mutex);
···
 		iscsi_start_session_recovery(session, conn, flag);
 		break;
 	default:
-		printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag);
+		iscsi_conn_printk(KERN_ERR, conn,
+				  "invalid stop flag %d\n", flag);
 	}
 }
 EXPORT_SYMBOL_GPL(iscsi_conn_stop);

drivers/scsi/mac_esp.c

···
-/*
- * 68k mac 53c9[46] scsi driver
- *
- * copyright (c) 1998, David Weis [e-mail]
- *
- * debugging on Quadra 800 and 660AV Michael Schmitz, Dave Kilzer 7/98
- *
- * based loosely on cyber_esp.c
- */
-
-/* these are unused for now */
-#define myreadl(addr) (*(volatile unsigned int *) (addr))
-#define mywritel(b, addr) ((*(volatile unsigned int *) (addr)) = (b))
-
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/io.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/macints.h>
-#include <asm/machw.h>
-#include <asm/mac_via.h>
-
-#include <asm/pgtable.h>
-
-#include <asm/macintosh.h>
-
-/* #define DEBUG_MAC_ESP */
-
-extern void esp_handle(struct NCR_ESP *esp);
-extern void mac_esp_intr(int irq, void *dev_id);
-
-static int  dma_bytes_sent(struct NCR_ESP * esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP * esp);
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length);
-static void dma_ints_off(struct NCR_ESP * esp);
-static void dma_ints_on(struct NCR_ESP * esp);
-static int  dma_irq_p(struct NCR_ESP * esp);
-static int  dma_irq_p_quick(struct NCR_ESP * esp);
-static void dma_led_off(struct NCR_ESP * esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write);
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write);
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * espdev);
-static int esp_iosb_dma_irq_p(struct NCR_ESP * espdev);
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are transferred to the ESP chip
-				 * via PIO.
-				 */
-
-static int esp_initialized = 0;
-
-static int setup_num_esps = -1;
-static int setup_disconnect = -1;
-static int setup_nosync = -1;
-static int setup_can_queue = -1;
-static int setup_cmd_per_lun = -1;
-static int setup_sg_tablesize = -1;
-#ifdef SUPPORT_TAGS
-static int setup_use_tagged_queuing = -1;
-#endif
-static int setup_hostid = -1;
-
-/*
- * Experimental ESP inthandler; check macints.c to make sure dev_id is 
- * set up properly!
- */
-
-void mac_esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) dev_id;
-	int irq_p = 0;
-
-	/* Handle the one ESP interrupt showing at this IRQ level. */
-	if(((esp)->irq & 0xff) == irq) {
-	/*
-	 * Debug ..
-	 */
-		irq_p = esp->dma_irq_p(esp);
-	 	printk("mac_esp: irq_p %x current %p disconnected %p\n",
-	 		irq_p, esp->current_SC, esp->disconnected_SC);
-	 		
-		/*
-		 * Mac: if we're here, it's an ESP interrupt for sure!
-		 */
-		if((esp->current_SC || esp->disconnected_SC)) {
-			esp->dma_ints_off(esp);
-
-			ESPIRQ(("I%d(", esp->esp_id));
-			esp_handle(esp);
-			ESPIRQ((")"));
-
-			esp->dma_ints_on(esp);
-		}
-	}
-}
-
-/*
- * Debug hooks; use for playing with the interrupt flag testing and interrupt
- * acknowledge on the various machines
- */
-
-void scsi_esp_polled(int irq, void *dev_id)
-{
-	if (esp_initialized == 0)
-		return;
-
-	mac_esp_intr(irq, dev_id);
-}
-
-void fake_intr(int irq, void *dev_id)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: got irq\n");
-#endif
-
-	mac_esp_intr(irq, dev_id);
-}
-
-irqreturn_t fake_drq(int irq, void *dev_id)
-{
-	printk("mac_esp: got drq\n");
-	return IRQ_HANDLED;
-}
-
-#define DRIVER_SETUP
-
-/*
- * Function : mac_esp_setup(char *str)
- *
- * Purpose : booter command line initialization of the overrides array,
- *
- * Inputs : str - parameters, separated by commas.
- *
- * Currently unused in the new driver; need to add settable parameters to the 
- * detect function.
- *
- */
-
-static int __init mac_esp_setup(char *str) {
-#ifdef DRIVER_SETUP
-	/* Format of mac53c9x parameter is:
-	 *   mac53c9x=<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
-	 * Negative values mean don't change.
-	 */
-	
-	char *this_opt;
-	long opt;
-
-	this_opt = strsep (&str, ",");
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0 && opt <= 2)
-			setup_num_esps = opt;
-		else if (opt > 2)
-			printk( "mac_esp_setup: invalid number of hosts %ld !\n", opt );
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-	
-		if (opt > 0)
-			setup_disconnect = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0)
-			setup_nosync = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt > 0)
-			setup_can_queue = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt > 0)
-			setup_cmd_per_lun = opt;
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		if (opt >= 0) {
-			setup_sg_tablesize = opt;
-			/* Must be <= SG_ALL (255) */
-			if (setup_sg_tablesize > SG_ALL)
-				setup_sg_tablesize = SG_ALL;
-		}
-
-		this_opt = strsep (&str, ",");
-	}
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-
-		/* Must be between 0 and 7 */
-		if (opt >= 0 && opt <= 7)
-			setup_hostid = opt;
-		else if (opt > 7)
-			printk( "mac_esp_setup: invalid host ID %ld !\n", opt);
-
-		this_opt = strsep (&str, ",");
-	}
-#ifdef SUPPORT_TAGS
-	if(this_opt) {
-		opt = simple_strtol( this_opt, NULL, 0 );
-		if (opt >= 0)
-			setup_use_tagged_queuing = !!opt;
-	}
-#endif
-#endif
-	return 1; 
-}
-
-__setup("mac53c9x=", mac_esp_setup);
-
-
-/*
- * ESP address 'detection'
- */
-
-unsigned long get_base(int chip_num)
-{
-	/*
-	 * using the chip_num and mac model, figure out where the
-	 * chips are mapped
-	 */
-
-	unsigned long io_base = 0x50f00000;
-	unsigned int second_offset = 0x402;
-	unsigned long scsi_loc = 0;
-
-	switch (macintosh_config->scsi_type) {
-
-	/* 950, 900, 700 */
-	case MAC_SCSI_QUADRA2:
-		scsi_loc =  io_base + 0xf000 + ((chip_num == 0) ? 0 : second_offset);
-		break;
-
-	/* av's */
-	case MAC_SCSI_QUADRA3:
-		scsi_loc = io_base + 0x18000 + ((chip_num == 0) ? 0 : second_offset);
-		break;
-
-	/* most quadra/centris models are like this */	
-	case MAC_SCSI_QUADRA:
-		scsi_loc = io_base + 0x10000;
-		break;
-
-	default:
-		printk("mac_esp: get_base: hit default!\n");
-		scsi_loc = io_base + 0x10000;
-		break;
-
-	} /* switch */
-
-	printk("mac_esp: io base at 0x%lx\n", scsi_loc);
-
-	return scsi_loc;
-}
-
-/*
- * Model dependent ESP setup
- */
-
-int mac_esp_detect(struct scsi_host_template * tpnt)
-{
-	int quick = 0;
-	int chipnum, chipspresent = 0;
-#if 0
-	unsigned long timeout;
-#endif
-
-	if (esp_initialized > 0)
-		return -ENODEV;
-
-	/* what do we have in this machine... */
-	if (MACHW_PRESENT(MAC_SCSI_96)) {
-		chipspresent ++;
-	}
-
-	if (MACHW_PRESENT(MAC_SCSI_96_2)) {
-		chipspresent ++;
-	}
-
-	/* number of ESPs present ? */
-	if (setup_num_esps >= 0) {
-	  if (chipspresent >= setup_num_esps)
-	    chipspresent = setup_num_esps;
-	  else
-	    printk("mac_esp_detect: num_hosts detected %d setup %d \n",
-		   chipspresent, setup_num_esps);
-	}
-
-	/* TODO: add disconnect / nosync flags */
-
-	/* setup variables */
-	tpnt->can_queue =
-	  (setup_can_queue > 0) ? setup_can_queue : 7;
-	tpnt->cmd_per_lun =
-	  (setup_cmd_per_lun > 0) ? setup_cmd_per_lun : 1;
-	tpnt->sg_tablesize = 
-	  (setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_ALL;
-
-	if (setup_hostid >= 0)
-	  tpnt->this_id = setup_hostid;
-	else {
-	  /* use 7 as default */
-	  tpnt->this_id = 7;
-	}
-
-#ifdef SUPPORT_TAGS
-	if (setup_use_tagged_queuing < 0)
-		setup_use_tagged_queuing = DEFAULT_USE_TAGGED_QUEUING;
-#endif
-
-	for (chipnum = 0; chipnum < chipspresent; chipnum ++) {
-		struct NCR_ESP * esp;
-
-		esp = esp_allocate(tpnt, NULL, 0);
-		esp->eregs = (struct ESP_regs *) get_base(chipnum);
-
-		esp->dma_irq_p = &esp_dafb_dma_irq_p;
-		if (chipnum == 0) {
-
-			if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
-				/* most machines except those below :-) */
-				quick = 1;
-				esp->dma_irq_p = &esp_iosb_dma_irq_p;
-			} else if (macintosh_config->scsi_type == MAC_SCSI_QUADRA3) {
-				/* mostly av's */
-				quick = 0;
-			} else {
-				/* q950, 900, 700 */
-				quick = 1;
-				out_be32(0xf9800024, 0x1d1);
-				esp->dregs = (void *) 0xf9800024;
-			}
-
-		} else { /* chipnum */
-
-			quick = 1;
-			out_be32(0xf9800028, 0x1d1);
-			esp->dregs = (void *) 0xf9800028;
-
-		} /* chipnum == 0 */
-
-		/* use pio for command bytes; pio for message/data: TBI */
-		esp->do_pio_cmds = 1;
-
-		/* Set the command buffer */
-		esp->esp_command = (volatile unsigned char*) cmd_buffer;
-		esp->esp_command_dvma = (__u32) cmd_buffer;
-
-		/* various functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = NULL;
-		esp->dma_init_write = NULL;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-
-		esp->dma_ports_p = &dma_ports_p;
-
-
-		/* Optional functions */
-		esp->dma_barrier = NULL;
-		esp->dma_drain = NULL;
-		esp->dma_invalidate = NULL;
-		esp->dma_irq_entry = NULL;
-		esp->dma_irq_exit = NULL;
-		esp->dma_led_on = NULL;
-		esp->dma_led_off = NULL;
-		esp->dma_poll = NULL;
-		esp->dma_reset = NULL;
-
-		/* SCSI chip speed */
-		/* below esp->cfreq = 40000000; */
-
-
-		if (quick) {
-			/* 'quick' means there's handshake glue logic like in the 5380 case */
-			esp->dma_setup = &dma_setup_quick;
-		} else {
-			esp->dma_setup = &dma_setup;
-		}
-
-		if (chipnum == 0) {
-
-			esp->irq = IRQ_MAC_SCSI;
-
-			request_irq(IRQ_MAC_SCSI, esp_intr, 0, "Mac ESP SCSI", esp->ehost);
-#if 0	/* conflicts with IOP ADB */
-			request_irq(IRQ_MAC_SCSIDRQ, fake_drq, 0, "Mac ESP DRQ", esp->ehost);
-#endif
-
-			if (macintosh_config->scsi_type == MAC_SCSI_QUADRA) {
-				esp->cfreq = 16500000;
-			} else {
-				esp->cfreq = 25000000;
-			}
-
-
-		} else { /* chipnum == 1 */
-
-			esp->irq = IRQ_MAC_SCSIDRQ;
-#if 0	/* conflicts with IOP ADB */
-			request_irq(IRQ_MAC_SCSIDRQ, esp_intr, 0, "Mac ESP SCSI 2", esp->ehost);
-#endif
-
-			esp->cfreq = 25000000;
-
-		}
-
-		if (quick) {
-			printk("esp: using quick version\n");
-		}
-
-		printk("esp: addr at 0x%p\n", esp->eregs);
-
-		esp->scsi_id = 7;
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-	} /* for chipnum */
-
-	if (chipspresent)
-		printk("\nmac_esp: %d esp controllers found\n", chipspresent);
-
-	esp_initialized = chipspresent;
-
-	return chipspresent;
-}
-
-static int mac_esp_release(struct Scsi_Host *shost)
-{
-	if (shost->irq)
-		free_irq(shost->irq, NULL);
-	if (shost->io_port && shost->n_io_port)
-		release_region(shost->io_port, shost->n_io_port);
-	scsi_unregister(shost);
-	return 0;
-}
-
-/*
- * I've been wondering what this is supposed to do, for some time. Talking 
- * to Allen Briggs: These machines have an extra register someplace where the
- * DRQ pin of the ESP can be monitored. That isn't useful for determining 
- * anything else (such as reselect interrupt or other magic) though. 
- * Maybe make the semantics should be changed like 
- * if (esp->current_SC)
- *	... check DRQ flag ...
- * else 
- *	... disconnected, check pending VIA interrupt ...
- *
- * There's a problem with using the dabf flag or mac_irq_pending() here: both
- * seem to return 1 even though no interrupt is currently pending, resulting
- * in esp_exec_cmd() holding off the next command, and possibly infinite loops
- * in esp_intr(). 
- * Short term fix: just use esp_status & ESP_STAT_INTR here, as long as we
- * use simple PIO. The DRQ status will be important when implementing pseudo
- * DMA mode (set up ESP transfer count, return, do a batch of bytes in PIO or 
- * 'hardware handshake' mode upon DRQ).
- * If you plan on changing this (i.e. to save the esp_status register access in 
- * favor of a VIA register access or a shadow register for the IFR), make sure
- * to try a debug version of this first to monitor what registers would be a good
- * indicator of the ESP interrupt.
- */
-
-static int esp_dafb_dma_irq_p(struct NCR_ESP * esp)
-{
-	unsigned int ret;
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: esp_dafb_dma_irq_p dafb %d irq %d\n", 
-		readl(esp->dregs), mac_irq_pending(IRQ_MAC_SCSI));
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	/*
-	 * maybe working; this is essentially what's used for iosb_dma_irq_p
-	 */
-	if (sreg)
-		return 1;
-	else
-		return 0;
-
-	/*
-	 * didn't work ...
-	 */
-#if 0
-	if (esp->current_SC)
-		ret = readl(esp->dregs) & 0x200;
-	else if (esp->disconnected_SC)
-		ret = 1; /* sreg ?? */
-	else
-		ret = mac_irq_pending(IRQ_MAC_SCSI);
-
-	return(ret);
-#endif
-
-}
-
-/*
- * See above: testing mac_irq_pending always returned 8 (SCSI IRQ) regardless 
- * of the actual ESP status.
- */
-
-static int esp_iosb_dma_irq_p(struct NCR_ESP * esp)
-{
-	int ret  = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", 
-		mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI), 
-		sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	if (sreg)
-		return (sreg);
-	else
-		return 0;
-}
-
-/*
- * This seems to be OK for PIO at least ... usually 0 after PIO.
- */
-
-static int dma_bytes_sent(struct NCR_ESP * esp, int fifo_count)
-{
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma bytes sent = %x\n", fifo_count);
-#endif
-
-	return fifo_count;
-}
-
-/*
- * dma_can_transfer is used to switch between DMA and PIO, if DMA (pseudo)
- * is ever implemented. Returning 0 here will use PIO.
- */
-
-static int dma_can_transfer(struct NCR_ESP * esp, Scsi_Cmnd * sp)
-{
-	unsigned long sz = sp->SCp.this_residual;
-#if 0	/* no DMA yet; make conditional */
-	if (sz > 0x10000000) {
-		sz = 0x10000000;
-	}
-	printk("mac_esp: dma can transfer = 0lx%x\n", sz);
-#else
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: pio to transfer = %ld\n", sz);
-#endif
-
-	sz = 0;
-#endif
-	return sz;
-}
-
-/*
- * Not yet ...
- */
-
-static void dma_dump_state(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_dump_state: called\n");
-#endif
-#if 0
-	ESPLOG(("esp%d: dma -- cond_reg<%02x>\n",
-		esp->esp_id, ((struct mac_dma_registers *)
-		(esp->dregs))->cond_reg));
-#endif
-}
-
-/*
- * DMA setup: should be used to set up the ESP transfer count for pseudo
- * DMA transfers; need a DRQ transfer function to do the actual transfer
- */
-
-static void dma_init_read(struct NCR_ESP * esp, char * vaddress, int length)
-{
-	printk("mac_esp: dma_init_read\n");
-}
-
-
-static void dma_init_write(struct NCR_ESP * esp, char * vaddress, int length)
-{
-	printk("mac_esp: dma_init_write\n");
-}
-
-
-static void dma_ints_off(struct NCR_ESP * esp)
-{
-	disable_irq(esp->irq);
-}
-
-
-static void dma_ints_on(struct NCR_ESP * esp)
-{
-	enable_irq(esp->irq);
-}
-
-/*
- * generic dma_irq_p(), unused
- */
-
-static int dma_irq_p(struct NCR_ESP * esp)
-{
-	int i = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p status %d\n", i);
-#endif
-
-	return (i & ESP_STAT_INTR);
-}
-
-static int dma_irq_p_quick(struct NCR_ESP * esp)
-{
-	/*
-	 * Copied from iosb_dma_irq_p()
-	 */
-	int ret  = mac_irq_pending(IRQ_MAC_SCSI) || mac_irq_pending(IRQ_MAC_SCSIDRQ);
-	int sreg = esp_read(esp->eregs->esp_status);
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_irq_p drq %d irq %d sreg %x curr %p disc %p\n", 
-		mac_irq_pending(IRQ_MAC_SCSIDRQ), mac_irq_pending(IRQ_MAC_SCSI), 
-		sreg, esp->current_SC, esp->disconnected_SC);
-#endif
-
-	sreg &= ESP_STAT_INTR;
-
-	if (sreg)
-		return (sreg);
-	else
-		return 0;
-
-}
-
-static void dma_led_off(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_led_off: called\n");
-#endif
-}
-
-
-static void dma_led_on(struct NCR_ESP * esp)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_led_on: called\n");
-#endif
-}
-
-
-static int dma_ports_p(struct NCR_ESP * esp)
-{
-	return 0;
-}
-
-
-static void dma_setup(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_setup\n");
-#endif
-
-	if (write) {
-		dma_init_read(esp, (char *) addr, count);
-	} else {
-		dma_init_write(esp, (char *) addr, count);
-	}
-}
-
-
-static void dma_setup_quick(struct NCR_ESP * esp, __u32 addr, int count, int write)
-{
-#ifdef DEBUG_MAC_ESP
-	printk("mac_esp: dma_setup_quick\n");
-#endif
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "mac_esp",
-	.name			= "Mac 53C9x SCSI",
-	.detect			= mac_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= mac_esp_release,
-	.info			= esp_info,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= DISABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/mca_53c9x.c

···
-/* mca_53c9x.c: Driver for the SCSI adapter found on NCR 35xx
- *  (and maybe some other) Microchannel machines
- *
- * Code taken mostly from Cyberstorm SCSI drivers
- *   Copyright (C) 1996 Jesper Skov ([e-mail])
- *
- * Hacked to work with the NCR MCA stuff by Tymm Twillman ([e-mail])
- *
- * The CyberStorm SCSI driver (and this driver) is based on David S. Miller's
- *   ESP driver  * for the Sparc computers. 
- * 
- * Special thanks to Ken Stewart at Symbios (LSI) for helping with info on
- *  the 86C01.  I was on the brink of going ga-ga...
- *
- * Also thanks to Jesper Skov for helping me with info on how the Amiga
- *  does things...
- */
-
-/*
- * This is currently only set up to use one 53c9x card at a time; it could be 
- *  changed fairly easily to detect/use more than one, but I'm not too sure how
- *  many cards that use the 53c9x on MCA systems there are (if, in fact, there
- *  are cards that use them, other than the one built into some NCR systems)...
- *  If anyone requests this, I'll throw it in, otherwise it's not worth the
- *  effort.
- */
-
-/*
- * Info on the 86C01 MCA interface chip at the bottom, if you care enough to
- *  look.
- */
-
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mca.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/mca-legacy.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <asm/mca_dma.h>
-#include <asm/pgtable.h>
-
-/*
- * From ibmmca.c (IBM scsi controller card driver) -- used for turning PS2 disk
- *  activity LED on and off
- */
-
-#define PS2_SYS_CTR	0x92
-
-/* Ports the ncr's 53c94 can be put at; indexed by pos register value */
-
-#define MCA_53C9X_IO_PORTS {                             \
-                         0x0000, 0x0240, 0x0340, 0x0400, \
-	                 0x0420, 0x3240, 0x8240, 0xA240, \
-	                }
-			
-/*
- * Supposedly there were some cards put together with the 'c9x and 86c01.  If
- *   they have different ID's from the ones on the 3500 series machines, 
- *   you can add them here and hopefully things will work out.
- */
-			
-#define MCA_53C9X_IDS {          \
-                         0x7F4C, \
-			 0x0000, \
-                        }
-
-static int  dma_bytes_sent(struct NCR_ESP *, int);
-static int  dma_can_transfer(struct NCR_ESP *, Scsi_Cmnd *);
-static void dma_dump_state(struct NCR_ESP *);
-static void dma_init_read(struct NCR_ESP *, __u32, int);
-static void dma_init_write(struct NCR_ESP *, __u32, int);
-static void dma_ints_off(struct NCR_ESP *);
-static void dma_ints_on(struct NCR_ESP *);
-static int  dma_irq_p(struct NCR_ESP *);
-static int  dma_ports_p(struct NCR_ESP *);
-static void dma_setup(struct NCR_ESP *, __u32, int, int);
-static void dma_led_on(struct NCR_ESP *);
-static void dma_led_off(struct NCR_ESP *);
-
-/* This is where all commands are put before they are trasfered to the 
- *  53c9x via PIO.
- */
-
-static volatile unsigned char cmd_buffer[16];
-
-/*
- * We keep the structure that is used to access the registers on the 53c9x
- *  here.
- */
-
-static struct ESP_regs eregs;
-
-/***************************************************************** Detection */
-static int mca_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	static int io_port_by_pos[] = MCA_53C9X_IO_PORTS;
-	int mca_53c9x_ids[] = MCA_53C9X_IDS;
-	int *id_to_check = mca_53c9x_ids;
-	int slot;
-	int pos[3];
-	unsigned int tmp_io_addr;
-	unsigned char tmp_byte;
-
-
-	if (!MCA_bus)
-		return 0;
-
-	while (*id_to_check) { 
-		if ((slot = mca_find_adapter(*id_to_check, 0)) !=
-		  MCA_NOTFOUND) 
-		{
-			esp = esp_allocate(tpnt, NULL, 0);
-
-			pos[0] = mca_read_stored_pos(slot, 2);
-			pos[1] = mca_read_stored_pos(slot, 3);
-			pos[2] = mca_read_stored_pos(slot, 4);
-
-			esp->eregs = &eregs;
-
-			/*
-			 * IO port base is given in the first (non-ID) pos
-			 *  register, like so:
-			 *
-			 *  Bits 3  2  1       IO base
-			 * ----------------------------
-			 *       0  0  0       <disabled>
-			 *       0  0  1       0x0240
-			 *       0  1  0       0x0340
-			 *       0  1  1       0x0400
-			 *       1  0  0       0x0420
-			 *       1  0  1       0x3240
-			 *       1  1  0       0x8240
-			 *       1  1  1       0xA240
-			 */
-
-			tmp_io_addr =
-			  io_port_by_pos[(pos[0] & 0x0E) >> 1];
-
-			esp->eregs->io_addr = tmp_io_addr + 0x10;
-
-      			if (esp->eregs->io_addr == 0x0000) { 
-        			printk("Adapter is disabled.\n");
-				break;
-			}
-
-			/*
-			 * IRQ is specified in bits 4 and 5:
-			 *
-			 *  Bits  4  5        IRQ
-			 * -----------------------
-			 *        0  0         3
-			 *        0  1         5
-			 *        1  0         7
-			 *        1  1         9
-			 */
-
-      			esp->irq = ((pos[0] & 0x30) >> 3) + 3;
-
-			/*
-			 * DMA channel is in the low 3 bits of the second
-			 *  POS register
-			 */
-
-			esp->dma = pos[1] & 7;
-			esp->slot = slot;
-
-			if (request_irq(esp->irq, esp_intr, 0,
-			 "NCR 53c9x SCSI", esp->ehost))
-			{
-				printk("Unable to request IRQ %d.\n", esp->irq);
-				esp_deallocate(esp);
-				scsi_unregister(esp->ehost);
-				return 0;
-			}
-
- 			if (request_dma(esp->dma, "NCR 53c9x SCSI")) {
-				printk("Unable to request DMA channel %d.\n",
-				 esp->dma);
-				free_irq(esp->irq, esp_intr);
-				esp_deallocate(esp);
-				scsi_unregister(esp->ehost);
-				return 0;
-			}
-
-			request_region(tmp_io_addr, 32, "NCR 53c9x SCSI");
-
-			/*
-			 * 86C01 handles DMA, IO mode, from address
-			 *  (base + 0x0a)
-			 */
-
-			mca_disable_dma(esp->dma);
-			mca_set_dma_io(esp->dma, tmp_io_addr + 0x0a);
-			mca_enable_dma(esp->dma);
- 
-			/* Tell the 86C01 to give us interrupts */
-
-			tmp_byte = inb(tmp_io_addr + 0x02) | 0x40;
-			outb(tmp_byte, tmp_io_addr + 0x02); 
-
-			/*
-			 * Scsi ID -- general purpose register, hi
-			 *  2 bits; add 4 to this number to get the
-			 *  ID
-			 */
-
-			esp->scsi_id = ((pos[2] & 0xC0) >> 6) + 4;
-
-			/* Do command transfer with programmed I/O */
-
-			esp->do_pio_cmds = 1;
-
-			/* Required functions */
-
-			esp->dma_bytes_sent = &dma_bytes_sent;
-			esp->dma_can_transfer = &dma_can_transfer;
-			esp->dma_dump_state = &dma_dump_state;
-			esp->dma_init_read = &dma_init_read;
-			esp->dma_init_write = &dma_init_write;
-			esp->dma_ints_off = &dma_ints_off;
-			esp->dma_ints_on = &dma_ints_on;
-			esp->dma_irq_p = &dma_irq_p;
-			esp->dma_ports_p = &dma_ports_p;
-			esp->dma_setup = &dma_setup;
-
-			/* Optional functions */
-
-			esp->dma_barrier = NULL;
-			esp->dma_drain = NULL;
-			esp->dma_invalidate = NULL;
-			esp->dma_irq_entry = NULL;
-			esp->dma_irq_exit = NULL;
-			esp->dma_led_on = dma_led_on;
-			esp->dma_led_off = dma_led_off;
-			esp->dma_poll = NULL;
-			esp->dma_reset = NULL;
-
-			/* Set the command buffer */
-
-			esp->esp_command = (volatile unsigned char*)
-			  cmd_buffer;
-	 		esp->esp_command_dvma = isa_virt_to_bus(cmd_buffer);
-
-			/* SCSI chip speed */
-
-			esp->cfreq = 25000000;
-
-			/* Differential SCSI? I think not. */
-
-			esp->diff = 0;
-
-			esp_initialize(esp);
-
-      			printk(" Adapter found in slot %2d: io port 0x%x "
-			  "irq %d dma channel %d\n", slot + 1, tmp_io_addr,
-			   esp->irq, esp->dma);
-
-			mca_set_adapter_name(slot, "NCR 53C9X SCSI Adapter");
-			mca_mark_as_used(slot);
-
-			break;
-		}
-    
-		id_to_check++;
-	}
-
-	return esps_in_use;
-}
-
-
-/******************************************************************* Release */
-
-static int mca_esp_release(struct Scsi_Host *host)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *)host->hostdata;
-	unsigned char tmp_byte;
-
-	esp_deallocate(esp);
-	/*
-	 * Tell the 86C01 to stop sending interrupts
-	 */
-
-	tmp_byte = inb(esp->eregs->io_addr - 0x0E);
-	tmp_byte &= ~0x40;
-	outb(tmp_byte, esp->eregs->io_addr - 0x0E);
-
-	free_irq(esp->irq, esp_intr);
-	free_dma(esp->dma);
-
-	mca_mark_as_unused(esp->slot);
-
-	return 0;
-}
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Ask the 53c9x.  It knows. */
-
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	/* 
-	 * The MCA dma channels can only do up to 128K bytes at a time.
-         *  (16 bit mode)
-	 */
-
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > 0x20000)
-		sz = 0x20000;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-	/*
-	 * Doesn't quite match up to the other drivers, but we do what we
-	 *  can.
-	 */
-
-	ESPLOG(("esp%d: dma channel <%d>\n", esp->esp_id, esp->dma));
-	ESPLOG(("bytes left to dma: %d\n", mca_get_dma_residue(esp->dma)));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	unsigned long flags;
-
-
-	save_flags(flags);
-	cli();
-
-	mca_disable_dma(esp->dma);
-	mca_set_dma_mode(esp->dma, MCA_DMA_MODE_XFER | MCA_DMA_MODE_16 |
-	  MCA_DMA_MODE_IO);
-	mca_set_dma_addr(esp->dma, addr);
-	mca_set_dma_count(esp->dma, length / 2); /* !!! */
-	mca_enable_dma(esp->dma);
-
-	restore_flags(flags);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 addr, int length)
-{
-	unsigned long flags;
-
-
-	save_flags(flags);
-	cli();
-
-	mca_disable_dma(esp->dma);
-	mca_set_dma_mode(esp->dma, MCA_DMA_MODE_XFER | MCA_DMA_MODE_WRITE |
-	  MCA_DMA_MODE_16 | MCA_DMA_MODE_IO);
-	mca_set_dma_addr(esp->dma, addr);
-	mca_set_dma_count(esp->dma, length / 2); /* !!! */
-	mca_enable_dma(esp->dma);
-
-	restore_flags(flags);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	/*
-	 * Tell the 'C01 to shut up.  All interrupts are routed through it.
-	 */
-
-	outb(inb(esp->eregs->io_addr - 0x0E) & ~0x40,
-	 esp->eregs->io_addr - 0x0E);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	/*
-	 * Ok.  You can speak again.
-	 */
-
-	outb(inb(esp->eregs->io_addr - 0x0E) | 0x40,
-	 esp->eregs->io_addr - 0x0E);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	/*
-	 * DaveM says that this should return a "yes" if there is an interrupt
-	 *  or a DMA error occurred.  I copied the Amiga driver's semantics,
-	 *  though, because it seems to work and we can't really tell if
-	 *  a DMA error happened.  This gives the "yes" if the scsi chip
-	 *  is sending an interrupt and no DMA activity is taking place
-	 */
-
-	return (!(inb(esp->eregs->io_addr - 0x04) & 1) &&
-	 !(inb(esp->eregs->io_addr - 0x04) & 2) ); 
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	/*
-	 * Check to see if interrupts are enabled on the 'C01 (in case abort
-	 *  is entered multiple times, so we only do the abort once)
-	 */
-
-	return (inb(esp->eregs->io_addr - 0x0E) & 0x40) ? 1:0;
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	if(write){
-		dma_init_write(esp, addr, count);
-	} else {
-		dma_init_read(esp, addr, count);
-	}
-}
-
-/*
- * These will not play nicely with other disk controllers that try to use the
- *  disk active LED... but what can you do?  Don't answer that.
- *
- * Stolen shamelessly from ibmmca.c -- IBM Microchannel SCSI adapter driver
- *
- */
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-	outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-	outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR);
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "mca_53c9x",
-	.name			= "NCR 53c9x SCSI",
-	.detect			= mca_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= mca_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.unchecked_isa_dma	= 1,
-	.use_clustering		= DISABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-/*
- * OK, here's the goods I promised.  The NCR 86C01 is an MCA interface chip 
- *  that handles enabling/diabling IRQ, dma interfacing, IO port selection
- *  and other fun stuff.  It takes up 16 addresses, and the chip it is
- *  connnected to gets the following 16.  Registers are as follows:
- *
- * Offsets 0-1 : Card ID
- *
- * Offset    2 : Mode enable register --
- *                Bit    7 : Data Word width (1 = 16, 0 = 8)
- *		  Bit    6 : IRQ enable (1 = enabled)
- *                Bits 5,4 : IRQ select
- *                              0  0 : IRQ 3
- *			        0  1 : IRQ 5
- * 				1  0 : IRQ 7
- *  				1  1 : IRQ 9
- *                Bits 3-1 : Base Address
- *                           0  0  0 : <disabled>
- * 			     0  0  1 : 0x0240
- *    			     0  1  0 : 0x0340
- *     			     0  1  1 : 0x0400
- * 			     1  0  0 : 0x0420
- * 			     1  0  1 : 0x3240
- * 			     1  1  0 : 0x8240
- * 			     1  1  1 : 0xA240
- *		  Bit    0 : Card enable (1 = enabled)
- *
- * Offset    3 : DMA control register --
- *                Bit    7 : DMA enable (1 = enabled)
- *                Bits 6,5 : Preemt Count Select (transfers to complete after
- *                            'C01 has been preempted on MCA bus)
- *                              0  0 : 0
- *                              0  1 : 1
- *                              1  0 : 3
- *                              1  1 : 7
- *  (all these wacky numbers; I'm sure there's a reason somewhere)
- *                Bit    4 : Fairness enable (1 = fair bus priority)
- *                Bits 3-0 : Arbitration level (0-15 consecutive)
- * 
- * Offset    4 : General purpose register
- *                Bits 7-3 : User definable (here, 7,6 are SCSI ID)
- *                Bits 2-0 : reserved
- *
- * Offset   10 : DMA decode register (used for IO based DMA; also can do
- *                PIO through this port)
- *
- * Offset   12 : Status
- *                Bits 7-2 : reserved
- *                Bit    1 : DMA pending (1 = pending)
- *                Bit    0 : IRQ pending (0 = pending)
- *
- * Exciting, huh?  
- *
- */                

drivers/scsi/oktagon_esp.c

···
-/*
- * Oktagon_esp.c -- Driver for bsc Oktagon
- *
- * Written by Carsten Pluntke 1998
- *
- * Based on cyber_esp.c
- */
-
-
-#if defined(CONFIG_AMIGA) || defined(CONFIG_APUS)
-#define USE_BOTTOM_HALF
-#endif
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/reboot.h>
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <linux/zorro.h>
-#include <asm/irq.h>
-#include <asm/amigaints.h>
-#include <asm/amigahw.h>
-
-#ifdef USE_BOTTOM_HALF
-#include <linux/workqueue.h>
-#include <linux/interrupt.h>
-#endif
-
-/* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
-#define OKTAGON_ESP_ADDR 0x03000
-#define OKTAGON_DMA_ADDR 0x01000
-
-
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_led_off(struct NCR_ESP *esp);
-static void dma_led_on(struct NCR_ESP *esp);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-
-static void dma_irq_exit(struct NCR_ESP *esp);
-static void dma_invalidate(struct NCR_ESP *esp);
-
-static void dma_mmu_get_scsi_one(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_get_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_release_scsi_one(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_mmu_release_scsi_sgl(struct NCR_ESP *,Scsi_Cmnd *);
-static void dma_advance_sg(Scsi_Cmnd *);
-static int  oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x);
-
-#ifdef USE_BOTTOM_HALF
-static void dma_commit(struct work_struct *unused);
-
-long oktag_to_io(long *paddr, long *addr, long len);
-long oktag_from_io(long *addr, long *paddr, long len);
-
-static DECLARE_WORK(tq_fake_dma, dma_commit);
-
-#define DMA_MAXTRANSFER 0x8000
-
-#else
-
-/*
- * No bottom half. Use transfer directly from IRQ. Find a narrow path
- * between too much IRQ overhead and clogging the IRQ for too long.
- */
-
-#define DMA_MAXTRANSFER 0x1000
-
-#endif
-
-static struct notifier_block oktagon_notifier = { 
-	oktagon_notify_reboot,
-	NULL,
-	0
-};
-
-static long *paddress;
-static long *address;
-static long len;
-static long dma_on;
-static int direction;
-static struct NCR_ESP *current_esp;
-
-
-static volatile unsigned char cmd_buffer[16];
-				/* This is where all commands are put
-				 * before they are trasfered to the ESP chip
-				 * via PIO.
-				 */
-
-/***************************************************************** Detection */
-int oktagon_esp_detect(struct scsi_host_template *tpnt)
-{
-	struct NCR_ESP *esp;
-	struct zorro_dev *z = NULL;
-	unsigned long address;
-	struct ESP_regs *eregs;
-
-	while ((z = zorro_find_device(ZORRO_PROD_BSC_OKTAGON_2008, z))) {
-	    unsigned long board = z->resource.start;
-	    if (request_mem_region(board+OKTAGON_ESP_ADDR,
-				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		/*
-		 * It is a SCSI controller.
-		 * Hardwire Host adapter to SCSI ID 7
-		 */
-		
-		address = (unsigned long)ZTWO_VADDR(board);
-		eregs = (struct ESP_regs *)(address + OKTAGON_ESP_ADDR);
-
-		/* This line was 5 lines lower */
-		esp = esp_allocate(tpnt, (void *)board + OKTAGON_ESP_ADDR, 0);
-
-		/* we have to shift the registers only one bit for oktagon */
-		esp->shift = 1;
-
-		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
-		udelay(5);
-		if (esp_read(eregs->esp_cfg1) != (ESP_CONFIG1_PENABLE | 7))
-			return 0; /* Bail out if address did not hold data */
-
-		/* Do command transfer with programmed I/O */
-		esp->do_pio_cmds = 1;
-
-		/* Required functions */
-		esp->dma_bytes_sent = &dma_bytes_sent;
-		esp->dma_can_transfer = &dma_can_transfer;
-		esp->dma_dump_state = &dma_dump_state;
-		esp->dma_init_read = &dma_init_read;
-		esp->dma_init_write = &dma_init_write;
-		esp->dma_ints_off = &dma_ints_off;
-		esp->dma_ints_on = &dma_ints_on;
-		esp->dma_irq_p = &dma_irq_p;
-		esp->dma_ports_p = &dma_ports_p;
-		esp->dma_setup = &dma_setup;
-
-		/* Optional functions */
-		esp->dma_barrier = 0;
-		esp->dma_drain = 0;
-		esp->dma_invalidate = &dma_invalidate;
-		esp->dma_irq_entry = 0;
-		esp->dma_irq_exit = &dma_irq_exit;
-		esp->dma_led_on = &dma_led_on;
-		esp->dma_led_off = &dma_led_off;
-		esp->dma_poll = 0;
-		esp->dma_reset = 0;
-
-		esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
-		esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
-		esp->dma_mmu_release_scsi_one = &dma_mmu_release_scsi_one;
-		esp->dma_mmu_release_scsi_sgl = &dma_mmu_release_scsi_sgl;
-		esp->dma_advance_sg = &dma_advance_sg;
-
-		/* SCSI chip speed */
-		/* Looking at the quartz of the SCSI board... */
-		esp->cfreq = 25000000;
-
-		/* The DMA registers on the CyberStorm are mapped
-		 * relative to the device (i.e. in the same Zorro
-		 * I/O block).
-		 */
-		esp->dregs = (void *)(address + OKTAGON_DMA_ADDR);
-
-		paddress = (long *) esp->dregs;
-
-		/* ESP register base */
-		esp->eregs = eregs;
-		
-		/* Set the command buffer */
-		esp->esp_command = (volatile unsigned char*) cmd_buffer;
-
-		/* Yes, the virtual address. See below. */
-		esp->esp_command_dvma = (__u32) cmd_buffer;
-
-		esp->irq = IRQ_AMIGA_PORTS;
-		request_irq(IRQ_AMIGA_PORTS, esp_intr, IRQF_SHARED,
-			    "BSC Oktagon SCSI", esp->ehost);
-
-		/* Figure out our scsi ID on the bus */
-		esp->scsi_id = 7;
-		
-		/* We don't have a differential SCSI-bus. */
-		esp->diff = 0;
-
-		esp_initialize(esp);
-
-		printk("ESP_Oktagon Driver 1.1"
-#ifdef USE_BOTTOM_HALF
-		       " [BOTTOM_HALF]"
-#else
-		       " [IRQ]"
-#endif
-		       " registered.\n");
-		printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps,esps_in_use);
-		esps_running = esps_in_use;
-		current_esp = esp;
-		register_reboot_notifier(&oktagon_notifier);
-		return esps_in_use;
-	    }
-	}
-	return 0;
-}
-
-
-/*
- * On certain configurations the SCSI equipment gets confused on reboot,
- * so we have to reset it then.
- */
-
-static int
-oktagon_notify_reboot(struct notifier_block *this, unsigned long code, void *x)
-{
-  struct NCR_ESP *esp;
-  
-  if((code == SYS_DOWN || code == SYS_HALT) && (esp = current_esp))
-   {
-    esp_bootup_reset(esp,esp->eregs);
-    udelay(500); /* Settle time. Maybe unnecessary. */
-   }
-  return NOTIFY_DONE;
-}
-    
-
-	
-#ifdef USE_BOTTOM_HALF
-
-
-/*
- * The bsc Oktagon controller has no real DMA, so we have to do the 'DMA
- * transfer' in the interrupt (Yikes!) or use a bottom half to not to clutter
- * IRQ's for longer-than-good.
- *
- * FIXME
- * BIG PROBLEM: 'len' is usually the buffer length, not the expected length
- * of the data. So DMA may finish prematurely, further reads lead to
- * 'machine check' on APUS systems (don't know about m68k systems, AmigaOS
- * deliberately ignores the bus faults) and a normal copy-loop can't
- * be exited prematurely just at the right moment by the dma_invalidate IRQ.
- * So do it the hard way, write an own copier in assembler and
- * catch the exception.
- *                                     -- Carsten
- */
- 
- 
-static void dma_commit(struct work_struct *unused)
-{
-    long wait,len2,pos;
-    struct NCR_ESP *esp;
-
-    ESPDATA(("Transfer: %ld bytes, Address 0x%08lX, Direction: %d\n",
-         len,(long) address,direction));
-    dma_ints_off(current_esp);
-
-    pos = 0;
-    wait = 1;
-    if(direction) /* write? (memory to device) */
-     {
-      while(len > 0)
-       {
-        len2 = oktag_to_io(paddress, address+pos, len);
-	if(!len2)
-	 {
-	  if(wait > 1000)
-	   {
-	    printk("Expedited DMA exit (writing) %ld\n",len);
-	    break;
-	   }
-	  mdelay(wait);
-	  wait *= 2;
-	 }
-	pos += len2;
-	len -= len2*sizeof(long);
-       }
-     } else {
-      while(len > 0)
-       {
-        len2 = oktag_from_io(address+pos, paddress, len);
-	if(!len2)
-	 {
-	  if(wait > 1000)
-	   {
-	    printk("Expedited DMA exit (reading) %ld\n",len);
-	    break;
-	   }
-	  mdelay(wait);
-	  wait *= 2;
-	 }
-	pos += len2;
-	len -= len2*sizeof(long);
-       }
-     }
-
-    /* to make esp->shift work */
-    esp=current_esp;
-
-#if 0
-    len2 = (esp_read(current_esp->eregs->esp_tclow) & 0xff) |
-           ((esp_read(current_esp->eregs->esp_tcmed) & 0xff) << 8);
-
-    /*
-     * Uh uh. If you see this, len and transfer count registers were out of
-     * sync. That means really serious trouble.
-     */
-
-    if(len2)
-      printk("Eeeek!! Transfer count still %ld!\n",len2);
-#endif
-
-    /*
-     * Normally we just need to exit and wait for the interrupt to come.
-     * But at least one device (my Microtek ScanMaker 630) regularly mis-
-     * calculates the bytes it should send which is really ugly because
-     * it locks up the SCSI bus if not accounted for.
-     */
-
-    if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
-     {
-      long len = 100;
-      long trash[10];
-
-      /*
-       * Interrupt bit was not set. Either the device is just plain lazy
-       * so we give it a 10 ms chance or...
-       */
-      while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)))
-        udelay(100);
-
-
-      if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
-       {
-        /*
-	 * So we think that the transfer count is out of sync. Since we
-	 * have all we want we are happy and can ditch the trash.
-	 */
-	 
-        len = DMA_MAXTRANSFER;
-
-        while(len-- && (!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR)))
-          oktag_from_io(trash,paddress,2);
-
-        if(!(esp_read(current_esp->eregs->esp_status) & ESP_STAT_INTR))
-         {
-          /*
-           * Things really have gone wrong. If we leave the system in that
-           * state, the SCSI bus is locked forever. I hope that this will
-           * turn the system in a more or less running state.
-           */
-          printk("Device is bolixed, trying bus reset...\n");
-	  esp_bootup_reset(current_esp,current_esp->eregs);
-         }
-       }
-     }
-
-    ESPDATA(("Transfer_finale: do_data_finale should come\n"));
-
-    len = 0;
-    dma_on = 0;
-    dma_ints_on(current_esp);
-}
-
-#endif
-
-/************************************************************* DMA Functions */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
-{
-	/* Since the CyberStorm DMA is fully dedicated to the ESP chip,
-	 * the number of bytes sent (to the ESP chip) equals the number
-	 * of bytes in the FIFO - there is no buffering in the DMA controller.
-	 * XXXX Do I read this right? It is from host to ESP, right?
-	 */
-	return fifo_count;
-}
-
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	unsigned long sz = sp->SCp.this_residual;
-	if(sz > DMA_MAXTRANSFER)
-		sz = DMA_MAXTRANSFER;
-	return sz;
-}
-
-static void dma_dump_state(struct NCR_ESP *esp)
-{
-}
-
-/*
- * What the f$@& is this?
- *
- * Some SCSI devices (like my Microtek ScanMaker 630 scanner) want to transfer
- * more data than requested. How much? Dunno. So ditch the bogus data into
- * the sink, hoping the device will advance to the next phase sooner or later.
- *
- *                         -- Carsten
- */
-
-static long oktag_eva_buffer[16]; /* The data sink */
-
-static void oktag_check_dma(void)
-{
-  struct NCR_ESP *esp;
-
-  esp=current_esp;
-  if(!len)
-   {
-    address = oktag_eva_buffer;
-    len = 2;
-    /* esp_do_data sets them to zero like len */
-    esp_write(current_esp->eregs->esp_tclow,2);
-    esp_write(current_esp->eregs->esp_tcmed,0);
-   }
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
-	/* Zorro is noncached, everything else done using processor. */
-	/* cache_clear(addr, length); */
-	
-	if(dma_on)
-	  panic("dma_init_read while dma process is initialized/running!\n");
-	direction = 0;
-	address = (long *) vaddress;
-	current_esp = esp;
-	len = length;
-	oktag_check_dma();
-        dma_on = 1;
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
-	/* cache_push(addr, length); */
-
-	if(dma_on)
-	  panic("dma_init_write while dma process is initialized/running!\n");
-	direction = 1;
-	address = (long *) vaddress;
-	current_esp = esp;
-	len = length;
-	oktag_check_dma();
-	dma_on = 1;
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	disable_irq(esp->irq);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	enable_irq(esp->irq);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	/* It's important to check the DMA IRQ bit in the correct way! */
-	return (esp_read(esp->eregs->esp_status) & ESP_STAT_INTR);
-}
-
-static void dma_led_off(struct NCR_ESP *esp)
-{
-}
-
-static void dma_led_on(struct NCR_ESP *esp)
-{
-}
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return ((amiga_custom.intenar) & IF_PORTS);
-}
-
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
-{
-	/* On the Sparc, DMA_ST_WRITE means "move data from device to memory"
-	 * so when (write) is true, it actually means READ!
-	 */
-	if(write){
-		dma_init_read(esp, addr, count);
-	} else {
-		dma_init_write(esp, addr, count);
-	}
-}
-
-/*
- * IRQ entry when DMA transfer is ready to be started
- */
-
-static void dma_irq_exit(struct NCR_ESP *esp)
-{
-#ifdef USE_BOTTOM_HALF
-	if(dma_on)
-	 {
-	  schedule_work(&tq_fake_dma);
-	 }
-#else
-	while(len && !dma_irq_p(esp))
-	 {
-	  if(direction)
-	    *paddress = *address++;
-	   else
-	    *address++ = *paddress;
-	  len -= (sizeof(long));
-	 }
-	len = 0;
-        dma_on = 0;
-#endif
-}
-
-/*
- * IRQ entry when DMA has just finished
- */
-
-static void dma_invalidate(struct NCR_ESP *esp)
-{
-}
-
-/*
- * Since the processor does the data transfer we have to use the custom
- * mmu interface to pass the virtual address, not the physical.
- */
-
-void dma_mmu_get_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-        sp->SCp.ptr =
-                sp->request_buffer;
-}
-
-void dma_mmu_get_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-        sp->SCp.ptr = sg_virt(sp->SCp.buffer);
-}
-
-void dma_mmu_release_scsi_one(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-}
-
-void dma_mmu_release_scsi_sgl(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-}
-
-void dma_advance_sg(Scsi_Cmnd *sp)
-{
-	sp->SCp.ptr = sg_virt(sp->SCp.buffer);
-}
-
-
-#define HOSTS_C
-
-int oktagon_esp_release(struct Scsi_Host *instance)
-{
-#ifdef MODULE
-	unsigned long address = (unsigned long)((struct NCR_ESP *)instance->hostdata)->edev;
-	esp_release();
-	release_mem_region(address, sizeof(struct ESP_regs));
-	free_irq(IRQ_AMIGA_PORTS, esp_intr);
-	unregister_reboot_notifier(&oktagon_notifier);
-#endif
-	return 1;
-}
-
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "esp-oktagon",
-	.proc_info		= &esp_proc_info,
-	.name			= "BSC Oktagon SCSI",
-	.detect			= oktagon_esp_detect,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.release		= oktagon_esp_release,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-MODULE_LICENSE("GPL");

drivers/scsi/oktagon_io.S

···
-/* -*- mode: asm -*-
- * Due to problems while transferring data I've put these routines as assembly
- * code.
- * Since I'm no PPC assembler guru, the code is just the assembler version of
-
-int oktag_to_io(long *paddr,long *addr,long len)
-{
-  long *addr2 = addr;
-  for(len=(len+sizeof(long)-1)/sizeof(long);len--;)
-    *paddr = *addr2++;
-  return addr2 - addr;
-}
-
-int oktag_from_io(long *addr,long *paddr,long len)
-{
-  long *addr2 = addr;
-  for(len=(len+sizeof(long)-1)/sizeof(long);len--;)
-    *addr2++ = *paddr;
-  return addr2 - addr;
-}
-
- * assembled using gcc -O2 -S, with two exception catch points where data
- * is moved to/from the IO register.
- */
-
-
-#ifdef CONFIG_APUS
-
-	.file	"oktagon_io.c"
-
-gcc2_compiled.:
-/*
-	.section ".text"
-*/
-	.align 2
-	.globl oktag_to_io
-	.type	 oktag_to_io,@function
-oktag_to_io:
-	addi 5,5,3
-	srwi 5,5,2
-	cmpwi 1,5,0
-	mr 9,3
-	mr 3,4
-	addi 5,5,-1
-	bc 12,6,.L3
-.L5:
-	cmpwi 1,5,0
-	lwz 0,0(3)
-	addi 3,3,4
-	addi 5,5,-1
-exp1:	stw 0,0(9)
-	bc 4,6,.L5
-.L3:
-ret1:	subf 3,4,3
-	srawi 3,3,2
-	blr
-.Lfe1:
-	.size	 oktag_to_io,.Lfe1-oktag_to_io
-	.align 2
-	.globl oktag_from_io
-	.type	 oktag_from_io,@function
-oktag_from_io:
-	addi 5,5,3
-	srwi 5,5,2
-	cmpwi 1,5,0
-	mr 9,3
-	addi 5,5,-1
-	bc 12,6,.L9
-.L11:
-	cmpwi 1,5,0
-exp2:	lwz 0,0(4)
-	addi 5,5,-1
-	stw 0,0(3)
-	addi 3,3,4
-	bc 4,6,.L11
-.L9:
-ret2:	subf 3,9,3
-	srawi 3,3,2
-	blr
-.Lfe2:
-	.size	 oktag_from_io,.Lfe2-oktag_from_io
-	.ident	"GCC: (GNU) egcs-2.90.29 980515 (egcs-1.0.3 release)"
-
-/*
- * Exception table.
- * Second longword shows where to jump when an exception at the addr the first
- * longword is pointing to is caught.
- */
-
-.section __ex_table,"a"
-	.align	2
-oktagon_except:
-	.long	exp1,ret1
-	.long	exp2,ret2
-
-#else
-
-/*
-The code which follows is for 680x0 based assembler and is meant for
-Linux/m68k. It was created by cross compiling the code using the
-instructions given above. I then added the four labels used in the
-exception handler table at the bottom of this file.
-- Kevin <[e-mail]>
-*/
-
-#ifdef CONFIG_AMIGA
-
-	.file	"oktagon_io.c"
-	.version	"01.01"
-gcc2_compiled.:
-.text
-	.align 	2
-.globl oktag_to_io
-	.type	 oktag_to_io,@function
-oktag_to_io:
-	link.w %a6,#0
-	move.l %d2,-(%sp)
-	move.l 8(%a6),%a1
-	move.l 12(%a6),%d1
-	move.l %d1,%a0
-	move.l 16(%a6),%d0
-	addq.l #3,%d0
-	lsr.l #2,%d0
-	subq.l #1,%d0
-	moveq.l #-1,%d2
-	cmp.l %d0,%d2
-	jbeq .L3
-.L5:
-exp1:
-	move.l (%a0)+,(%a1)
-	dbra %d0,.L5
-	clr.w %d0
-	subq.l #1,%d0
-	jbcc .L5
-.L3:
-ret1:
-	move.l %a0,%d0
-	sub.l %d1,%d0
-	asr.l #2,%d0
-	move.l -4(%a6),%d2
-	unlk %a6
-	rts
-
-.Lfe1:
-	.size	 oktag_to_io,.Lfe1-oktag_to_io
-	.align 	2
-.globl oktag_from_io
-	.type	 oktag_from_io,@function
-oktag_from_io:
-	link.w %a6,#0
-	move.l %d2,-(%sp)
-	move.l 8(%a6),%d1
-	move.l 12(%a6),%a1
-	move.l %d1,%a0
-	move.l 16(%a6),%d0
-	addq.l #3,%d0
-	lsr.l #2,%d0
-	subq.l #1,%d0
-	moveq.l #-1,%d2
-	cmp.l %d0,%d2
-	jbeq .L9
-.L11:
-exp2:
-	move.l (%a1),(%a0)+
-	dbra %d0,.L11
-	clr.w %d0
-	subq.l #1,%d0
-	jbcc .L11
-.L9:
-ret2:
-	move.l %a0,%d0
-	sub.l %d1,%d0
-	asr.l #2,%d0
-	move.l -4(%a6),%d2
-	unlk %a6
-	rts
-.Lfe2:
-	.size	 oktag_from_io,.Lfe2-oktag_from_io
-	.ident	"GCC: (GNU) 2.7.2.1"
-
-/*
- * Exception table.
- * Second longword shows where to jump when an exception at the addr the first
- * longword is pointing to is caught.
- */
-
-.section __ex_table,"a"
-	.align	2
-oktagon_except:
-	.long	exp1,ret1
-	.long	exp2,ret2
-
-#endif
-#endif

drivers/scsi/ps3rom.c

···
 
 #define BOUNCE_SIZE			(64*1024)
 
-#define PS3ROM_MAX_SECTORS		(BOUNCE_SIZE / CD_FRAMESIZE)
+#define PS3ROM_MAX_SECTORS		(BOUNCE_SIZE >> 9)
 
 
 struct ps3rom_private {

drivers/scsi/qla2xxx/qla_attr.c

···
 	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != SFP_DEV_SIZE * 2)
 		return 0;
 
+	if (ha->sfp_data)
+		goto do_read;
+
+	ha->sfp_data = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
+	    &ha->sfp_data_dma);
+	if (!ha->sfp_data) {
+		qla_printk(KERN_WARNING, ha,
+		    "Unable to allocate memory for SFP read-data.\n");
+		return 0;
+	}
+
+do_read:
+	memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
 	addr = 0xa0;
 	for (iter = 0, offset = 0; iter < (SFP_DEV_SIZE * 2) / SFP_BLOCK_SIZE;
 	    iter++, offset += SFP_BLOCK_SIZE) {
···
 static void
 qla2x00_get_host_speed(struct Scsi_Host *shost)
 {
-	scsi_qla_host_t *ha = shost_priv(shost);
+	scsi_qla_host_t *ha = to_qla_parent(shost_priv(shost));
 	uint32_t speed = 0;
 
 	switch (ha->link_data_rate) {
···
 	case PORT_SPEED_4GB:
 		speed = 4;
 		break;
+	case PORT_SPEED_8GB:
+		speed = 8;
+		break;
 	}
 	fc_host_speed(shost) = speed;
 }
···
 static void
 qla2x00_get_host_port_type(struct Scsi_Host *shost)
 {
-	scsi_qla_host_t *ha = shost_priv(shost);
+	scsi_qla_host_t *ha = to_qla_parent(shost_priv(shost));
 	uint32_t port_type = FC_PORTTYPE_UNKNOWN;
 
 	switch (ha->current_topology) {
···
 static struct fc_host_statistics *
 qla2x00_get_fc_host_stats(struct Scsi_Host *shost)
 {
-	scsi_qla_host_t *ha = shost_priv(shost);
+	scsi_qla_host_t *ha = to_qla_parent(shost_priv(shost));
 	int rval;
 	struct link_statistics *stats;
 	dma_addr_t stats_dma;
···
 static void
 qla2x00_get_host_port_state(struct Scsi_Host *shost)
 {
-	scsi_qla_host_t *ha = shost_priv(shost);
+	scsi_qla_host_t *ha = to_qla_parent(shost_priv(shost));
 
 	if (!ha->flags.online)
 		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;

drivers/scsi/qla2xxx/qla_def.h

···
 #define VP_RET_CODE_NO_MEM		5
 #define VP_RET_CODE_NOT_FOUND		6
 
-#define to_qla_parent(x) (((x)->parent) ? (x)->parent : (x))
-
 /*
  * ISP operations
  */

drivers/scsi/qla2xxx/qla_gbl.h

···
 extern int num_hosts;
 
 extern int qla2x00_loop_reset(scsi_qla_host_t *);
+extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
 
 /*
  * Global Functions in qla_mid.c source file.

drivers/scsi/qla2xxx/qla_init.c

···
 {
 	int rval;
 	uint32_t srisc_address = 0;
+	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
+	unsigned long flags;
+
+	if (!IS_FWI2_CAPABLE(ha) && !IS_QLA2100(ha) && !IS_QLA2200(ha)) {
+		/* Disable SRAM, Instruction RAM and GP RAM parity.  */
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x0));
+		RD_REG_WORD(&reg->hccr);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	}
 
 	/* Load firmware sequences */
 	rval = ha->isp_ops->load_risc(ha, &srisc_address);
···
 			    "scsi(%ld): ISP Firmware failed checksum.\n",
 			    ha->host_no));
 		}
+	}
+
+	if (!IS_FWI2_CAPABLE(ha) && !IS_QLA2100(ha) && !IS_QLA2200(ha)) {
+		/* Enable proper parity. */
+		spin_lock_irqsave(&ha->hardware_lock, flags);
+		if (IS_QLA2300(ha))
+			/* SRAM parity */
+			WRT_REG_WORD(&reg->hccr, HCCR_ENABLE_PARITY + 0x1);
+		else
+			/* SRAM, Instruction RAM and GP RAM parity */
+			WRT_REG_WORD(&reg->hccr, HCCR_ENABLE_PARITY + 0x7);
+		RD_REG_WORD(&reg->hccr);
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 	}
 
 	if (rval) {
···
 qla2x00_abort_isp(scsi_qla_host_t *ha)
 {
 	int rval;
-	unsigned long flags = 0;
-	uint16_t       cnt;
-	srb_t          *sp;
 	uint8_t        status = 0;
 
 	if (ha->flags.online) {
···
 				    LOOP_DOWN_TIME);
 		}
 
-		spin_lock_irqsave(&ha->hardware_lock, flags);
 		/* Requeue all commands in outstanding command list. */
-		for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
-			sp = ha->outstanding_cmds[cnt];
-			if (sp) {
-				ha->outstanding_cmds[cnt] = NULL;
-				sp->flags = 0;
-				sp->cmd->result = DID_RESET << 16;
-				sp->cmd->host_scribble = (unsigned char *)NULL;
-				qla2x00_sp_compl(ha, sp);
-			}
-		}
-		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		qla2x00_abort_all_cmds(ha, DID_RESET << 16);
 
 		ha->isp_ops->get_flash_version(ha, ha->request_ring);
 
···
 			clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
 
 			if (ha->eft) {
+				memset(ha->eft, 0, EFT_SIZE);
 				rval = qla2x00_enable_eft_trace(ha,
 				    ha->eft_dma, EFT_NUM_BUFFERS);
 				if (rval) {
···
 qla2x00_restart_isp(scsi_qla_host_t *ha)
 {
 	uint8_t		status = 0;
-	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
-	unsigned long	flags = 0;
 	uint32_t wait_time;
 
 	/* If firmware needs to be loaded */
 	if (qla2x00_isp_firmware(ha)) {
 		ha->flags.online = 0;
-		if (!(status = ha->isp_ops->chip_diag(ha))) {
-			if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
-				status = qla2x00_setup_chip(ha);
-				goto done;
-			}
-
-			spin_lock_irqsave(&ha->hardware_lock, flags);
-
-			if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha) &&
-			    !IS_QLA25XX(ha)) {
-				/*
-				 * Disable SRAM, Instruction RAM and GP RAM
-				 * parity.
-				 */
-				WRT_REG_WORD(&reg->hccr,
-				    (HCCR_ENABLE_PARITY + 0x0));
-				RD_REG_WORD(&reg->hccr);
-			}
-
-			spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
+		if (!(status = ha->isp_ops->chip_diag(ha)))
 			status = qla2x00_setup_chip(ha);
-
-			spin_lock_irqsave(&ha->hardware_lock, flags);
-
-			if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha) &&
-			    !IS_QLA25XX(ha)) {
-				/* Enable proper parity */
-				if (IS_QLA2300(ha))
-					/* SRAM parity */
-					WRT_REG_WORD(&reg->hccr,
-					    (HCCR_ENABLE_PARITY + 0x1));
-				else
-					/*
-					 * SRAM, Instruction RAM and GP RAM
-					 * parity.
-					 */
-					WRT_REG_WORD(&reg->hccr,
-					    (HCCR_ENABLE_PARITY + 0x7));
-				RD_REG_WORD(&reg->hccr);
-			}
-
-			spin_unlock_irqrestore(&ha->hardware_lock, flags);
-		}
 	}
 
- done:
 	if (!status && !(status = qla2x00_init_rings(ha))) {
 		clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 		if (!(status = qla2x00_fw_ready(ha))) {

drivers/scsi/qla2xxx/qla_inline.h

···
 	qla2x00_get_firmware_state(ha, &fw_state);
 }
 
+static __inline__ scsi_qla_host_t * to_qla_parent(scsi_qla_host_t *);
+static __inline__ scsi_qla_host_t *
+to_qla_parent(scsi_qla_host_t *ha)
+{
+	return ha->parent ? ha->parent : ha;
+}
+
 /**
  * qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
  * @ha: HA context

drivers/scsi/qla2xxx/qla_isr.c

···
 qla2x00_request_irqs(scsi_qla_host_t *ha)
 {
 	int ret;
+	device_reg_t __iomem *reg = ha->iobase;
+	unsigned long flags;
 
 	/* If possible, enable MSI-X. */
 	if (!IS_QLA2432(ha) && !IS_QLA2532(ha))
···
 		DEBUG2(qla_printk(KERN_INFO, ha,
 		    "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
 		    ha->fw_attributes));
-		return ret;
+		goto clear_risc_ints;
 	}
 	qla_printk(KERN_WARNING, ha,
 	    "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
···
 
 	ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
 	    IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
-	if (!ret) {
-		ha->flags.inta_enabled = 1;
-		ha->host->irq = ha->pdev->irq;
-	} else {
+	if (ret) {
 		qla_printk(KERN_WARNING, ha,
 		    "Failed to reserve interrupt %d already in use.\n",
 		    ha->pdev->irq);
+		goto fail;
 	}
+	ha->flags.inta_enabled = 1;
+	ha->host->irq = ha->pdev->irq;
+clear_risc_ints:
 
+	ha->isp_ops->disable_intrs(ha);
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	if (IS_FWI2_CAPABLE(ha)) {
+		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
+		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
+	} else {
+		WRT_REG_WORD(&reg->isp.semaphore, 0);
+		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
+		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+	ha->isp_ops->enable_intrs(ha);
+
+fail:
 	return ret;
 }
 

drivers/scsi/qla2xxx/qla_mbx.c

···
 	DEBUG11(printk("qla2x00_init_firmware(%ld): entered.\n",
 	    ha->host_no));
 
-	if (ha->fw_attributes & BIT_2)
+	if (ha->flags.npiv_supported)
 		mcp->mb[0] = MBC_MID_INITIALIZE_FIRMWARE;
 	else
 		mcp->mb[0] = MBC_INITIALIZE_FIRMWARE;

drivers/scsi/qla2xxx/qla_os.c

···
 
 static void qla2x00_rst_aen(scsi_qla_host_t *);
 
-static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
+static int qla2x00_mem_alloc(scsi_qla_host_t *);
 static void qla2x00_mem_free(scsi_qla_host_t *ha);
-static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
-static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
 
 /* -------------------------------------------------------------------------- */
···
 	return ha->isp_ops->abort_target(reset_fcport);
 }
 
+void
+qla2x00_abort_all_cmds(scsi_qla_host_t *ha, int res)
+{
+	int cnt;
+	unsigned long flags;
+	srb_t *sp;
+
+	spin_lock_irqsave(&ha->hardware_lock, flags);
+	for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
+		sp = ha->outstanding_cmds[cnt];
+		if (sp) {
+			ha->outstanding_cmds[cnt] = NULL;
+			sp->flags = 0;
+			sp->cmd->result = res;
+			sp->cmd->host_scribble = (unsigned char *)NULL;
+			qla2x00_sp_compl(ha, sp);
+		}
+	}
+	spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
 static int
 qla2xxx_slave_alloc(struct scsi_device *sdev)
 {
···
 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	int	ret = -ENODEV;
-	device_reg_t __iomem *reg;
 	struct Scsi_Host *host;
 	scsi_qla_host_t *ha;
-	unsigned long	flags = 0;
 	char pci_info[30];
 	char fw_str[30];
 	struct scsi_host_template *sht;
···
 	ha->parent = NULL;
 	ha->bars = bars;
 	ha->mem_only = mem_only;
+	spin_lock_init(&ha->hardware_lock);
 
 	/* Set ISP-type information. */
 	qla2x00_set_isp_flags(ha);
···
 	qla_printk(KERN_INFO, ha,
 	    "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
 	    ha->iobase);
-
-	spin_lock_init(&ha->hardware_lock);
 
 	ha->prev_topology = 0;
 	ha->init_cb_size = sizeof(init_cb_t);
···
 	DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
 	    ha->host_no, ha));
 
-	ha->isp_ops->disable_intrs(ha);
-
-	spin_lock_irqsave(&ha->hardware_lock, flags);
-	reg = ha->iobase;
-	if (IS_FWI2_CAPABLE(ha)) {
-		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
-		WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
-	} else {
-		WRT_REG_WORD(&reg->isp.semaphore, 0);
-		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
-		WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
-
-		/* Enable proper parity */
-		if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
-			if (IS_QLA2300(ha))
-				/* SRAM parity */
-				WRT_REG_WORD(&reg->isp.hccr,
-				    (HCCR_ENABLE_PARITY + 0x1));
-			else
-				/* SRAM, Instruction RAM and GP RAM parity */
-				WRT_REG_WORD(&reg->isp.hccr,
-				    (HCCR_ENABLE_PARITY + 0x7));
-		}
-	}
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
-	ha->isp_ops->enable_intrs(ha);
-
 	pci_set_drvdata(pdev, ha);
 
 	ha->flags.init_done = 1;
···
 static void
 qla2x00_free_device(scsi_qla_host_t *ha)
 {
+	qla2x00_abort_all_cmds(ha, DID_NO_CONNECT << 16);
+
 	/* Disable timer */
 	if (ha->timer_active)
 		qla2x00_stop_timer(ha);
+
+	ha->flags.online = 0;
 
 	/* Kill the kernel thread for this host */
 	if (ha->dpc_thread) {
···
 
 	if (ha->eft)
 		qla2x00_disable_eft_trace(ha);
-
-	ha->flags.online = 0;
 
 	/* Stop currently executing firmware. */
 	qla2x00_try_to_stop_firmware(ha);
···
 *
 * Returns:
 *      0  = success.
-*      1  = failure.
+*      !0  = failure.
 */
-static uint8_t
+static int
 qla2x00_mem_alloc(scsi_qla_host_t *ha)
 {
 	char	name[16];
-	uint8_t   status = 1;
-	int	retry= 10;
 
-	do {
-		/*
-		 * This will loop only once if everything goes well, else some
-		 * number of retries will be performed to get around a kernel
-		 * bug where available mem is not allocated until after a
-		 * little delay and a retry.
-		 */
-		ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
-		    (ha->request_q_length + 1) * sizeof(request_t),
-		    &ha->request_dma, GFP_KERNEL);
-		if (ha->request_ring == NULL) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - request_ring\n");
+	ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
+	    (ha->request_q_length + 1) * sizeof(request_t), &ha->request_dma,
+	    GFP_KERNEL);
+	if (!ha->request_ring)
+		goto fail;
 
-			qla2x00_mem_free(ha);
-			msleep(100);
+	ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
+	    (ha->response_q_length + 1) * sizeof(response_t),
+	    &ha->response_dma, GFP_KERNEL);
+	if (!ha->response_ring)
+		goto fail_free_request_ring;
 
-			continue;
-		}
+	ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
+	    &ha->gid_list_dma, GFP_KERNEL);
+	if (!ha->gid_list)
+		goto fail_free_response_ring;
 
-		ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
-		    (ha->response_q_length + 1) * sizeof(response_t),
-		    &ha->response_dma, GFP_KERNEL);
-		if (ha->response_ring == NULL) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - response_ring\n");
+	ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
+	    &ha->init_cb_dma, GFP_KERNEL);
+	if (!ha->init_cb)
+		goto fail_free_gid_list;
 
-			qla2x00_mem_free(ha);
-			msleep(100);
+	snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
+	    ha->host_no);
+	ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
+	    DMA_POOL_SIZE, 8, 0);
+	if (!ha->s_dma_pool)
+		goto fail_free_init_cb;
 
-			continue;
-		}
+	ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
+	if (!ha->srb_mempool)
+		goto fail_free_s_dma_pool;
 
-		ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
-		    &ha->gid_list_dma, GFP_KERNEL);
-		if (ha->gid_list == NULL) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - gid_list\n");
+	/* Get memory for cached NVRAM */
+	ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
+	if (!ha->nvram)
+		goto fail_free_srb_mempool;
 
-			qla2x00_mem_free(ha);
-			msleep(100);
+	/* Allocate memory for SNS commands */
+	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
+		/* Get consistent memory allocated for SNS commands */
+		ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
+		    sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, GFP_KERNEL);
+		if (!ha->sns_cmd)
+			goto fail_free_nvram;
+	} else {
+		/* Get consistent memory allocated for MS IOCB */
+		ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
+		    &ha->ms_iocb_dma);
+		if (!ha->ms_iocb)
+			goto fail_free_nvram;
 
-			continue;
-		}
-
-		/* get consistent memory allocated for init control block */
-		ha->init_cb = dma_alloc_coherent(&ha->pdev->dev,
-		    ha->init_cb_size, &ha->init_cb_dma, GFP_KERNEL);
-		if (ha->init_cb == NULL) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - init_cb\n");
-
-			qla2x00_mem_free(ha);
-			msleep(100);
-
-			continue;
-		}
-		memset(ha->init_cb, 0, ha->init_cb_size);
-
-		snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
-		    ha->host_no);
-		ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
-		    DMA_POOL_SIZE, 8, 0);
-		if (ha->s_dma_pool == NULL) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - s_dma_pool\n");
-
-			qla2x00_mem_free(ha);
-			msleep(100);
-
-			continue;
-		}
-
-		if (qla2x00_allocate_sp_pool(ha)) {
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - "
-			    "qla2x00_allocate_sp_pool()\n");
-
-			qla2x00_mem_free(ha);
-			msleep(100);
-
-			continue;
-		}
-
-		/* Allocate memory for SNS commands */
-		if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
-			/* Get consistent memory allocated for SNS commands */
-			ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
-			    sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
-			    GFP_KERNEL);
-			if (ha->sns_cmd == NULL) {
-				/* error */
-				qla_printk(KERN_WARNING, ha,
-				    "Memory Allocation failed - sns_cmd\n");
-
-				qla2x00_mem_free(ha);
-				msleep(100);
-
-				continue;
-			}
-			memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
-		} else {
-			/* Get consistent memory allocated for MS IOCB */
-			ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
-			    &ha->ms_iocb_dma);
-			if (ha->ms_iocb == NULL) {
-				/* error */
-				qla_printk(KERN_WARNING, ha,
-				    "Memory Allocation failed - ms_iocb\n");
-
-				qla2x00_mem_free(ha);
-				msleep(100);
-
-				continue;
-			}
-			memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
-
-			/*
-			 * Get consistent memory allocated for CT SNS
-			 * commands
-			 */
-			ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
-			    sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
-			    GFP_KERNEL);
-			if (ha->ct_sns == NULL) {
-				/* error */
-				qla_printk(KERN_WARNING, ha,
-				    "Memory Allocation failed - ct_sns\n");
-
-				qla2x00_mem_free(ha);
-				msleep(100);
-
-				continue;
-			}
-			memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
-
-			if (IS_FWI2_CAPABLE(ha)) {
-				/*
-				 * Get consistent memory allocated for SFP
-				 * block.
-				 */
-				ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
-				    GFP_KERNEL, &ha->sfp_data_dma);
-				if (ha->sfp_data == NULL) {
-					qla_printk(KERN_WARNING, ha,
-					    "Memory Allocation failed - "
-					    "sfp_data\n");
-
-					qla2x00_mem_free(ha);
-					msleep(100);
-
-					continue;
-				}
-				memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
-			}
-		}
-
-		/* Get memory for cached NVRAM */
-		ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
-		if (ha->nvram == NULL) {
-			/* error */
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - nvram cache\n");
-
-			qla2x00_mem_free(ha);
-			msleep(100);
-
-			continue;
-		}
-
-		/* Done all allocations without any error. */
-		status = 0;
-
-	} while (retry-- && status != 0);
-
-	if (status) {
-		printk(KERN_WARNING
-			"%s(): **** FAILED ****\n", __func__);
+		/* Get consistent memory allocated for CT SNS commands */
+		ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
+		    sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, GFP_KERNEL);
+		if (!ha->ct_sns)
+			goto fail_free_ms_iocb;
 	}
 
-	return(status);
+	return 0;
+
+fail_free_ms_iocb:
+	dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
+	ha->ms_iocb = NULL;
+	ha->ms_iocb_dma = 0;
+fail_free_nvram:
+	kfree(ha->nvram);
+	ha->nvram = NULL;
+fail_free_srb_mempool:
+	mempool_destroy(ha->srb_mempool);
+	ha->srb_mempool = NULL;
+fail_free_s_dma_pool:
+	dma_pool_destroy(ha->s_dma_pool);
+	ha->s_dma_pool = NULL;
+fail_free_init_cb:
+	dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
+	    ha->init_cb_dma);
+	ha->init_cb = NULL;
+	ha->init_cb_dma = 0;
+fail_free_gid_list:
+	dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
+	    ha->gid_list_dma);
+	ha->gid_list = NULL;
+	ha->gid_list_dma = 0;
+fail_free_response_ring:
+	dma_free_coherent(&ha->pdev->dev, (ha->response_q_length + 1) *
+	    sizeof(response_t), ha->response_ring, ha->response_dma);
+	ha->response_ring = NULL;
+	ha->response_dma = 0;
+fail_free_request_ring:
+	dma_free_coherent(&ha->pdev->dev, (ha->request_q_length + 1) *
+	    sizeof(request_t), ha->request_ring, ha->request_dma);
+	ha->request_ring = NULL;
+	ha->request_dma = 0;
+fail:
+	return -ENOMEM;
 }
 
 /*
···
 	struct list_head	*fcpl, *fcptemp;
 	fc_port_t	*fcport;
 
-	if (ha == NULL) {
-		/* error */
-		DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
-		return;
-	}
-
-	/* free sp pool */
-	qla2x00_free_sp_pool(ha);
+	if (ha->srb_mempool)
+		mempool_destroy(ha->srb_mempool);
 
 	if (ha->fce)
 		dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
···
 		    (ha->request_q_length + 1) * sizeof(request_t),
 		    ha->request_ring, ha->request_dma);
 
+	ha->srb_mempool = NULL;
 	ha->eft = NULL;
 	ha->eft_dma = 0;
 	ha->sns_cmd = NULL;
···
 	kfree(ha->nvram);
 }
 
-/*
- * qla2x00_allocate_sp_pool
- * 	 This routine is called during initialization to allocate
- *  	 memory for local srb_t.
- *
- * Input:
- *	 ha   = adapter block pointer.
- *
- * Context:
- *      Kernel context.
- */
-static int
-qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
-{
-	int      rval;
-
-	rval = QLA_SUCCESS;
-	ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
-	if (ha->srb_mempool == NULL) {
-		qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
-		rval = QLA_FUNCTION_FAILED;
-	}
-	return (rval);
-}
-
-/*
- *  This routine frees all adapter allocated memory.
- *
- */
-static void
-qla2x00_free_sp_pool( scsi_qla_host_t *ha)
-{
-	if (ha->srb_mempool) {
-		mempool_destroy(ha->srb_mempool);
-		ha->srb_mempool = NULL;
-	}
-}
-
 /**************************************************************************
 * qla2x00_do_dpc
 *   This kernel thread is a task that is schedule by the interrupt handler
···
 	fc_port_t	*fcport;
 	uint8_t		status;
 	uint16_t	next_loopid;
+	struct scsi_qla_host *vha;
+	int             i;
+
 
 	ha = (scsi_qla_host_t *)data;
 
···
 				}
 				clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
 			}
+
+			for_each_mapped_vp_idx(ha, i) {
+				list_for_each_entry(vha, &ha->vp_list,
+				    vp_list) {
+					if (i == vha->vp_idx) {
+						set_bit(ISP_ABORT_NEEDED,
+						    &vha->dpc_flags);
+						break;
+					}
+				}
+			}
+
 			DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
 			    ha->host_no));
 		}
···
 MODULE_FIRMWARE(FW_FILE_ISP2300);
 MODULE_FIRMWARE(FW_FILE_ISP2322);
 MODULE_FIRMWARE(FW_FILE_ISP24XX);
+MODULE_FIRMWARE(FW_FILE_ISP25XX);

drivers/scsi/qla2xxx/qla_sup.c

···
 	}
 }
 
+#define PIO_REG(h, r) ((h)->pio_address + offsetof(struct device_reg_2xxx, r))
+
 void
 qla2x00_beacon_blink(struct scsi_qla_host *ha)
 {
···
 	unsigned long flags;
 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 
-	if (ha->pio_address)
-		reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
-
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 
 	/* Save the Original GPIOE. */
 	if (ha->pio_address) {
-		gpio_enable = RD_REG_WORD_PIO(&reg->gpioe);
-		gpio_data = RD_REG_WORD_PIO(&reg->gpiod);
+		gpio_enable = RD_REG_WORD_PIO(PIO_REG(ha, gpioe));
+		gpio_data = RD_REG_WORD_PIO(PIO_REG(ha, gpiod));
 	} else {
 		gpio_enable = RD_REG_WORD(&reg->gpioe);
 		gpio_data = RD_REG_WORD(&reg->gpiod);
···
 	gpio_enable |= GPIO_LED_MASK;
 
 	if (ha->pio_address) {
-		WRT_REG_WORD_PIO(&reg->gpioe, gpio_enable);
+		WRT_REG_WORD_PIO(PIO_REG(ha, gpioe), gpio_enable);
 	} else {
 		WRT_REG_WORD(&reg->gpioe, gpio_enable);
 		RD_REG_WORD(&reg->gpioe);
···
 
 	/* Set the modified gpio_data values */
 	if (ha->pio_address) {
-		WRT_REG_WORD_PIO(&reg->gpiod, gpio_data);
+		WRT_REG_WORD_PIO(PIO_REG(ha, gpiod), gpio_data);
 	} else {
 		WRT_REG_WORD(&reg->gpiod, gpio_data);
 		RD_REG_WORD(&reg->gpiod);
···
 		return QLA_FUNCTION_FAILED;
 	}
 
-	if (ha->pio_address)
-		reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
-
 	/* Turn off LEDs. */
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 	if (ha->pio_address) {
-		gpio_enable = RD_REG_WORD_PIO(&reg->gpioe);
-		gpio_data = RD_REG_WORD_PIO(&reg->gpiod);
+		gpio_enable = RD_REG_WORD_PIO(PIO_REG(ha, gpioe));
+		gpio_data = RD_REG_WORD_PIO(PIO_REG(ha, gpiod));
 	} else {
 		gpio_enable = RD_REG_WORD(&reg->gpioe);
 		gpio_data = RD_REG_WORD(&reg->gpiod);
···
 
 	/* Set the modified gpio_enable values. */
 	if (ha->pio_address) {
-		WRT_REG_WORD_PIO(&reg->gpioe, gpio_enable);
+		WRT_REG_WORD_PIO(PIO_REG(ha, gpioe), gpio_enable);
 	} else {
 		WRT_REG_WORD(&reg->gpioe, gpio_enable);
 		RD_REG_WORD(&reg->gpioe);
···
 	/* Clear out previously set LED colour. */
 	gpio_data &= ~GPIO_LED_MASK;
 	if (ha->pio_address) {
-		WRT_REG_WORD_PIO(&reg->gpiod, gpio_data);
+		WRT_REG_WORD_PIO(PIO_REG(ha, gpiod), gpio_data);
 	} else {
 		WRT_REG_WORD(&reg->gpiod, gpio_data);
 		RD_REG_WORD(&reg->gpiod);
···
 	if (ha->pio_address) {
 		uint16_t data2;
 
-		reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
-		WRT_REG_WORD_PIO(&reg->flash_address, (uint16_t)addr);
+		WRT_REG_WORD_PIO(PIO_REG(ha, flash_address), (uint16_t)addr);
 		do {
-			data = RD_REG_WORD_PIO(&reg->flash_data);
+			data = RD_REG_WORD_PIO(PIO_REG(ha, flash_data));
 			barrier();
 			cpu_relax();
-			data2 = RD_REG_WORD_PIO(&reg->flash_data);
+			data2 = RD_REG_WORD_PIO(PIO_REG(ha, flash_data));
 		} while (data != data2);
 	} else {
 		WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
···
 
 	/* Always perform IO mapped accesses to the FLASH registers. */
 	if (ha->pio_address) {
-		reg = (struct device_reg_2xxx __iomem *)ha->pio_address;
-		WRT_REG_WORD_PIO(&reg->flash_address, (uint16_t)addr);
-		WRT_REG_WORD_PIO(&reg->flash_data, (uint16_t)data);
+		WRT_REG_WORD_PIO(PIO_REG(ha, flash_address), (uint16_t)addr);
+		WRT_REG_WORD_PIO(PIO_REG(ha, flash_data), (uint16_t)data);
 	} else {
 		WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
 		RD_REG_WORD(&reg->ctrl_status);		/* PCI Posting. */

drivers/scsi/qla2xxx/qla_version.h

···
 /*
  * Driver version
  */
-#define QLA2XXX_VERSION      "8.02.00-k7"
+#define QLA2XXX_VERSION      "8.02.00-k8"
 
 #define QLA_DRIVER_MAJOR_VER	8
 #define QLA_DRIVER_MINOR_VER	2

drivers/scsi/qla4xxx/ql4_init.c

···
 		atomic_set(&ddb_entry->relogin_timer, 0);
 		clear_bit(DF_RELOGIN, &ddb_entry->flags);
 		clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+		iscsi_unblock_session(ddb_entry->sess);
 		iscsi_session_event(ddb_entry->sess,
 				    ISCSI_KEVENT_CREATE_SESSION);
 		/*

drivers/scsi/qla4xxx/ql4_os.c

···
 				  enum iscsi_param param, char *buf);
 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 				  enum iscsi_host_param param, char *buf);
-static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag);
-static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
 
 /*
···
 	.slave_alloc		= qla4xxx_slave_alloc,
 	.slave_destroy		= qla4xxx_slave_destroy,
 
+	.scan_finished		= iscsi_scan_finished,
+
 	.this_id		= -1,
 	.cmd_per_lun		= 3,
 	.use_clustering		= ENABLE_CLUSTERING,
···
 	.get_conn_param		= qla4xxx_conn_get_param,
 	.get_session_param	= qla4xxx_sess_get_param,
 	.get_host_param		= qla4xxx_host_get_param,
-	.start_conn		= qla4xxx_conn_start,
-	.stop_conn		= qla4xxx_conn_stop,
 	.session_recovery_timedout = qla4xxx_recovery_timedout,
 };
 
···
 	struct ddb_entry *ddb_entry = session->dd_data;
 	struct scsi_qla_host *ha = ddb_entry->ha;
 
-	DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) "
-		      "secs exhausted, marking device DEAD.\n", ha->host_no,
-		      __func__, ddb_entry->fw_ddb_index,
-		      ha->port_down_retry_count));
+	if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+		atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
 
-	atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+		DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count "
+			      "of (%d) secs exhausted, marking device DEAD.\n",
+			      ha->host_no, __func__, ddb_entry->fw_ddb_index,
+			      ha->port_down_retry_count));
 
-	DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = "
-		      "0x%lx\n", ha->host_no, __func__, ha->dpc_flags));
-	queue_work(ha->dpc_thread, &ha->dpc_work);
-}
-
-static int qla4xxx_conn_start(struct iscsi_cls_conn *conn)
-{
-	struct iscsi_cls_session *session;
-	struct ddb_entry *ddb_entry;
-
-	session = iscsi_dev_to_session(conn->dev.parent);
-	ddb_entry = session->dd_data;
-
-	DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n",
-		      ddb_entry->ha->host_no, __func__,
-		      ddb_entry->fw_ddb_index));
-	iscsi_unblock_session(session);
-	return 0;
-}
-
-static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag)
-{
-	struct iscsi_cls_session *session;
-	struct ddb_entry *ddb_entry;
-
-	session = iscsi_dev_to_session(conn->dev.parent);
-	ddb_entry = session->dd_data;
-
-	DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n",
-		      ddb_entry->ha->host_no, __func__,
-		      ddb_entry->fw_ddb_index));
-	if (flag == STOP_CONN_RECOVER)
-		iscsi_block_session(session);
-	else
-		printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag);
+		DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc "
+			      "flags = 0x%lx\n",
+			      ha->host_no, __func__, ha->dpc_flags));
+		queue_work(ha->dpc_thread, &ha->dpc_work);
+	}
 }
 
 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
···
 		DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
 		return -ENOMEM;
 	}
+
+	/* finally ready to go */
+	iscsi_unblock_session(ddb_entry->sess);
 	return 0;
 }
 
···
 	DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n",
 		      ha->host_no, ddb_entry->bus, ddb_entry->target,
 		      ddb_entry->fw_ddb_index));
+	iscsi_block_session(ddb_entry->sess);
 	iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
 }
 
···
 {
 	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
 	struct ddb_entry *ddb_entry = cmd->device->hostdata;
+	struct iscsi_cls_session *sess = ddb_entry->sess;
 	struct srb *srb;
 	int rval;
+
+	if (!sess) {
+		cmd->result = DID_IMM_RETRY << 16;
+		goto qc_fail_command;
+	}
+
+	rval = iscsi_session_chkready(sess);
+	if (rval) {
+		cmd->result = rval;
+		goto qc_fail_command;
+	}
 
 	if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
 		if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
···
 	       qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
 	       ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
 	       ha->patch_number, ha->build_number);
-
+	scsi_scan_host(host);
 	return 0;
 
 remove_host:

drivers/scsi/scsi.c

···
 EXPORT_SYMBOL(starget_for_each_device);
 
 /**
- * __starget_for_each_device  -  helper to walk all devices of a target
- *				 (UNLOCKED)
+ * __starget_for_each_device - helper to walk all devices of a target (UNLOCKED)
  * @starget:	target whose devices we want to iterate over.
+ * @data:	parameter for callback @fn()
+ * @fn:		callback function that is invoked for each device
  *
  * This traverses over each device of @starget.  It does _not_
  * take a reference on the scsi_device, so the whole loop must be

drivers/scsi/scsi_lib.c

···
 		page = sg_page(sg);
 		off = sg->offset;
 		len = sg->length;
- 		data_len += len;
 
 		while (len > 0 && data_len > 0) {
 			/*

drivers/scsi/scsi_transport_iscsi.c

···
 #include <scsi/scsi_transport_iscsi.h>
 #include <scsi/iscsi_if.h>
 
-#define ISCSI_SESSION_ATTRS 18
-#define ISCSI_CONN_ATTRS 11
+#define ISCSI_SESSION_ATTRS 19
+#define ISCSI_CONN_ATTRS 13
 #define ISCSI_HOST_ATTRS 4
-#define ISCSI_TRANSPORT_VERSION "2.0-867"
+#define ISCSI_TRANSPORT_VERSION "2.0-868"
 
 struct iscsi_internal {
 	int daemon_pid;
···
 	memset(ihost, 0, sizeof(*ihost));
 	INIT_LIST_HEAD(&ihost->sessions);
 	mutex_init(&ihost->mutex);
+	atomic_set(&ihost->nr_scans, 0);
 
-	snprintf(ihost->unbind_workq_name, KOBJ_NAME_LEN, "iscsi_unbind_%d",
+	snprintf(ihost->scan_workq_name, KOBJ_NAME_LEN, "iscsi_scan_%d",
 		shost->host_no);
-	ihost->unbind_workq = create_singlethread_workqueue(
-						ihost->unbind_workq_name);
-	if (!ihost->unbind_workq)
+	ihost->scan_workq = create_singlethread_workqueue(
+						ihost->scan_workq_name);
+	if (!ihost->scan_workq)
 		return -ENOMEM;
 	return 0;
 }
···
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct iscsi_host *ihost = shost->shost_data;
 
-	destroy_workqueue(ihost->unbind_workq);
+	destroy_workqueue(ihost->scan_workq);
 	return 0;
 }
 
···
  * The following functions can be used by LLDs that allocate
  * their own scsi_hosts or by software iscsi LLDs
  */
+static struct {
+	int value;
+	char *name;
+} iscsi_session_state_names[] = {
+	{ ISCSI_SESSION_LOGGED_IN,	"LOGGED_IN" },
+	{ ISCSI_SESSION_FAILED,		"FAILED" },
+	{ ISCSI_SESSION_FREE,		"FREE" },
+};
+
+const char *iscsi_session_state_name(int state)
+{
+	int i;
+	char *name = NULL;
+
+	for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) {
+		if (iscsi_session_state_names[i].value == state) {
+			name = iscsi_session_state_names[i].name;
+			break;
+		}
+	}
+	return name;
+}
+
+int iscsi_session_chkready(struct iscsi_cls_session *session)
+{
+	unsigned long flags;
+	int err;
+
+	spin_lock_irqsave(&session->lock, flags);
+	switch (session->state) {
+	case ISCSI_SESSION_LOGGED_IN:
+		err = 0;
+		break;
+	case ISCSI_SESSION_FAILED:
+		err = DID_IMM_RETRY << 16;
+		break;
+	case ISCSI_SESSION_FREE:
+		err = DID_NO_CONNECT << 16;
+		break;
+	default:
+		err = DID_NO_CONNECT << 16;
+		break;
+	}
+	spin_unlock_irqrestore(&session->lock, flags);
+	return err;
+}
+EXPORT_SYMBOL_GPL(iscsi_session_chkready);
+
 static void iscsi_session_release(struct device *dev)
 {
 	struct iscsi_cls_session *session = iscsi_dev_to_session(dev);
···
 {
 	return dev->release == iscsi_session_release;
 }
+
+/**
+ * iscsi_scan_finished - helper to report when running scans are done
+ * @shost: scsi host
+ * @time: scan run time
+ *
+ * This function can be used by drives like qla4xxx to report to the scsi
+ * layer when the scans it kicked off at module load time are done.
+ */
+int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+	struct iscsi_host *ihost = shost->shost_data;
+	/*
+	 * qla4xxx will have kicked off some session unblocks before calling
+	 * scsi_scan_host, so just wait for them to complete.
+	 */
+	return !atomic_read(&ihost->nr_scans);
+}
+EXPORT_SYMBOL_GPL(iscsi_scan_finished);
 
 static int iscsi_user_scan(struct Scsi_Host *shost, uint channel,
 			   uint id, uint lun)
···
 	return 0;
 }
 
+static void iscsi_scan_session(struct work_struct *work)
+{
+	struct iscsi_cls_session *session =
+			container_of(work, struct iscsi_cls_session, scan_work);
+	struct Scsi_Host *shost = iscsi_session_to_shost(session);
+	struct iscsi_host *ihost = shost->shost_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&session->lock, flags);
+	if (session->state != ISCSI_SESSION_LOGGED_IN) {
+		spin_unlock_irqrestore(&session->lock, flags);
+		goto done;
+	}
+	spin_unlock_irqrestore(&session->lock, flags);
+
+	scsi_scan_target(&session->dev, 0, session->target_id,
+			 SCAN_WILD_CARD, 1);
+done:
+	atomic_dec(&ihost->nr_scans);
+}
+
 static void session_recovery_timedout(struct work_struct *work)
 {
 	struct iscsi_cls_session *session =
 		container_of(work, struct iscsi_cls_session,
 			     recovery_work.work);
+	unsigned long flags;
 
-	dev_printk(KERN_INFO, &session->dev, "iscsi: session recovery timed "
-		  "out after %d secs\n", session->recovery_tmo);
+	iscsi_cls_session_printk(KERN_INFO, session,
+				 "session recovery timed out after %d secs\n",
+				 session->recovery_tmo);
+
+	spin_lock_irqsave(&session->lock, flags);
+	switch (session->state) {
+	case ISCSI_SESSION_FAILED:
+		session->state = ISCSI_SESSION_FREE;
+		break;
+	case ISCSI_SESSION_LOGGED_IN:
+	case ISCSI_SESSION_FREE:
+		/* we raced with the unblock's flush */
+		spin_unlock_irqrestore(&session->lock, flags);
+		return;
+	}
+	spin_unlock_irqrestore(&session->lock, flags);
 
 	if (session->transport->session_recovery_timedout)
 		session->transport->session_recovery_timedout(session);
···
 	scsi_target_unblock(&session->dev);
 }
 
-void iscsi_unblock_session(struct iscsi_cls_session *session)
+void __iscsi_unblock_session(struct iscsi_cls_session *session)
 {
 	if (!cancel_delayed_work(&session->recovery_work))
 		flush_workqueue(iscsi_eh_timer_workq);
 	scsi_target_unblock(&session->dev);
 }
+
+void iscsi_unblock_session(struct iscsi_cls_session *session)
+{
+	struct Scsi_Host *shost = iscsi_session_to_shost(session);
+	struct iscsi_host *ihost = shost->shost_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&session->lock, flags);
+	session->state = ISCSI_SESSION_LOGGED_IN;
+	spin_unlock_irqrestore(&session->lock, flags);
+
+	__iscsi_unblock_session(session);
+	/*
+	 * Only do kernel scanning if the driver is properly hooked into
+	 * the async scanning code (drivers like iscsi_tcp do login and
+	 * scanning from userspace).
+	 */
+	if (shost->hostt->scan_finished) {
+		if (queue_work(ihost->scan_workq, &session->scan_work))
+			atomic_inc(&ihost->nr_scans);
+	}
+}
 EXPORT_SYMBOL_GPL(iscsi_unblock_session);
 
 void iscsi_block_session(struct iscsi_cls_session *session)
 {
+	unsigned long flags;
+
+	spin_lock_irqsave(&session->lock, flags);
+	session->state = ISCSI_SESSION_FAILED;
+	spin_unlock_irqrestore(&session->lock, flags);
+
 	scsi_target_block(&session->dev);
 	queue_delayed_work(iscsi_eh_timer_workq, &session->recovery_work,
 			   session->recovery_tmo * HZ);
···
 	struct Scsi_Host *shost = iscsi_session_to_shost(session);
 	struct iscsi_host *ihost = shost->shost_data;
 
-	return queue_work(ihost->unbind_workq, &session->unbind_work);
+	return queue_work(ihost->scan_workq, &session->unbind_work);
 }
 
 struct iscsi_cls_session *
···
 
 	session->transport = transport;
 	session->recovery_tmo = 120;
+	session->state = ISCSI_SESSION_FREE;
 	INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout);
 	INIT_LIST_HEAD(&session->host_list);
 	INIT_LIST_HEAD(&session->sess_list);
 	INIT_WORK(&session->unbind_work, __iscsi_unbind_session);
+	INIT_WORK(&session->scan_work, iscsi_scan_session);
+	spin_lock_init(&session->lock);
 
 	/* this is released in the dev's release function */
 	scsi_host_get(shost);
···
 		 session->sid);
 	err = device_add(&session->dev);
 	if (err) {
-		dev_printk(KERN_ERR, &session->dev, "iscsi: could not "
-			   "register session's dev\n");
+		iscsi_cls_session_printk(KERN_ERR, session,
+					 "could not register session's dev\n");
 		goto release_host;
 	}
 	transport_register_device(&session->dev);
···
 	 * If we are blocked let commands flow again. The lld or iscsi
 	 * layer should set up the queuecommand to fail commands.
 	 */
-	iscsi_unblock_session(session);
-	iscsi_unbind_session(session);
+	spin_lock_irqsave(&session->lock, flags);
+	session->state = ISCSI_SESSION_FREE;
+	spin_unlock_irqrestore(&session->lock, flags);
+	__iscsi_unblock_session(session);
+	__iscsi_unbind_session(&session->unbind_work);
+
+	/* flush running scans */
+	flush_workqueue(ihost->scan_workq);
 	/*
 	 * If the session dropped while removing devices then we need to make
 	 * sure it is not blocked
 	 */
 	if (!cancel_delayed_work(&session->recovery_work))
 		flush_workqueue(iscsi_eh_timer_workq);
-	flush_workqueue(ihost->unbind_workq);
 
 	/* hw iscsi may not have removed all connections from session */
 	err = device_for_each_child(&session->dev, NULL,
 				    iscsi_iter_destroy_conn_fn);
 	if (err)
-		dev_printk(KERN_ERR, &session->dev, "iscsi: Could not delete "
-			   "all connections for session. Error %d.\n", err);
+		iscsi_cls_session_printk(KERN_ERR, session,
+					 "Could not delete all connections "
+					 "for session. Error %d.\n", err);
 
 	transport_unregister_device(&session->dev);
 	device_del(&session->dev);
···
 	conn->dev.release = iscsi_conn_release;
 	err = device_register(&conn->dev);
 	if (err) {
-		dev_printk(KERN_ERR, &conn->dev, "iscsi: could not register "
-			   "connection's dev\n");
+		iscsi_cls_session_printk(KERN_ERR, session, "could not "
+					 "register connection's dev\n");
 		goto release_parent_ref;
 	}
 	transport_register_device(&conn->dev);
···
 	skb = alloc_skb(len, GFP_ATOMIC);
 	if (!skb) {
 		iscsi_conn_error(conn, ISCSI_ERR_CONN_FAILED);
-		dev_printk(KERN_ERR, &conn->dev, "iscsi: can not deliver "
-			   "control PDU: OOM\n");
+		iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver "
+				      "control PDU: OOM\n");
 		return -ENOMEM;
 	}
 
···
 
 void iscsi_conn_error(struct iscsi_cls_conn *conn, enum iscsi_err error)
 {
+	struct iscsi_cls_session *session = iscsi_conn_to_session(conn);
 	struct nlmsghdr	*nlh;
 	struct sk_buff	*skb;
 	struct iscsi_uevent *ev;
 	struct iscsi_internal *priv;
 	int len = NLMSG_SPACE(sizeof(*ev));
+	unsigned long flags;
 
 	priv = iscsi_if_transport_lookup(conn->transport);
 	if (!priv)
 		return;
 
+	spin_lock_irqsave(&session->lock, flags);
+	if (session->state == ISCSI_SESSION_LOGGED_IN)
+		session->state = ISCSI_SESSION_FAILED;
+	spin_unlock_irqrestore(&session->lock, flags);
+
 	skb = alloc_skb(len, GFP_ATOMIC);
 	if (!skb) {
-		dev_printk(KERN_ERR, &conn->dev, "iscsi: gracefully ignored "
-			  "conn error (%d)\n", error);
+		iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored "
+				      "conn error (%d)\n", error);
 		return;
 	}
 
···
 
 	iscsi_broadcast_skb(skb, GFP_ATOMIC);
 
-	dev_printk(KERN_INFO, &conn->dev, "iscsi: detected conn error (%d)\n",
-		   error);
+	iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n",
+			      error);
 }
 EXPORT_SYMBOL_GPL(iscsi_conn_error);
 
···
 
 		skbstat = alloc_skb(len, GFP_ATOMIC);
 		if (!skbstat) {
-			dev_printk(KERN_ERR, &conn->dev, "iscsi: can not "
-				   "deliver stats: OOM\n");
+			iscsi_cls_conn_printk(KERN_ERR, conn, "can not "
+					      "deliver stats: OOM\n");
 			return -ENOMEM;
 		}
 
···
 
 	skb = alloc_skb(len, GFP_KERNEL);
 	if (!skb) {
-		dev_printk(KERN_ERR, &session->dev, "Cannot notify userspace "
-			  "of session event %u\n", event);
+		iscsi_cls_session_printk(KERN_ERR, session,
+					 "Cannot notify userspace of session "
+					 "event %u\n", event);
 		return -ENOMEM;
 	}
 
···
 		ev->r.unbind_session.sid = session->sid;
 		break;
 	default:
-		dev_printk(KERN_ERR, &session->dev, "Invalid event %u.\n",
-			   event);
+		iscsi_cls_session_printk(KERN_ERR, session, "Invalid event "
+					 "%u.\n", event);
 		kfree_skb(skb);
 		return -EINVAL;
 	}
···
 	 */
 	rc = iscsi_broadcast_skb(skb, GFP_KERNEL);
 	if (rc < 0)
-		dev_printk(KERN_ERR, &session->dev, "Cannot notify userspace "
-			  "of session event %u. Check iscsi daemon\n", event);
+		iscsi_cls_session_printk(KERN_ERR, session,
+					 "Cannot notify userspace of session "
+					 "event %u. Check iscsi daemon\n",
+					 event);
 	return rc;
 }
 EXPORT_SYMBOL_GPL(iscsi_session_event);
···
 
 	session = iscsi_session_lookup(ev->u.c_conn.sid);
 	if (!session) {
-		printk(KERN_ERR "iscsi: invalid session %d\n",
+		printk(KERN_ERR "iscsi: invalid session %d.\n",
 		       ev->u.c_conn.sid);
 		return -EINVAL;
 	}
 
 	conn = transport->create_conn(session, ev->u.c_conn.cid);
 	if (!conn) {
-		printk(KERN_ERR "iscsi: couldn't create a new "
-			   "connection for session %d\n",
-			   session->sid);
+		iscsi_cls_session_printk(KERN_ERR, session,
+					 "couldn't create a new connection.");
 		return -ENOMEM;
 	}
 
···
 iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0);
 iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0);
 
+static ssize_t
+show_priv_session_state(struct class_device *cdev, char *buf)
+{
+	struct iscsi_cls_session *session = iscsi_cdev_to_session(cdev);
+	return sprintf(buf, "%s\n", iscsi_session_state_name(session->state));
+}
+static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
+			NULL);
+
 #define iscsi_priv_session_attr_show(field, format)			\
 static ssize_t								\
 show_priv_session_##field(struct class_device *cdev, char *buf)		\
···
 	SETUP_SESSION_RD_ATTR(abort_tmo, ISCSI_ABORT_TMO);
 	SETUP_SESSION_RD_ATTR(lu_reset_tmo,ISCSI_LU_RESET_TMO);
 	SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);
+	SETUP_PRIV_SESSION_RD_ATTR(state);
 
 	BUG_ON(count > ISCSI_SESSION_ATTRS);
 	priv->session_attrs[count] = NULL;

drivers/scsi/sd.c

···
 	unsigned int xfer_size = scsi_bufflen(SCpnt);
  	unsigned int good_bytes = result ? 0 : xfer_size;
  	u64 start_lba = SCpnt->request->sector;
+	u64 end_lba = SCpnt->request->sector + (xfer_size / 512);
  	u64 bad_lba;
 	struct scsi_sense_hdr sshdr;
 	int sense_valid = 0;
···
 			goto out;
 		if (xfer_size <= SCpnt->device->sector_size)
 			goto out;
-		switch (SCpnt->device->sector_size) {
-		case 256:
+		if (SCpnt->device->sector_size < 512) {
+			/* only legitimate sector_size here is 256 */
 			start_lba <<= 1;
-			break;
-		case 512:
-			break;
-		case 1024:
-			start_lba >>= 1;
-			break;
-		case 2048:
-			start_lba >>= 2;
-			break;
-		case 4096:
-			start_lba >>= 3;
-			break;
-		default:
-			/* Print something here with limiting frequency. */
-			goto out;
-			break;
+			end_lba <<= 1;
+		} else {
+			/* be careful ... don't want any overflows */
+			u64 factor = SCpnt->device->sector_size / 512;
+			do_div(start_lba, factor);
+			do_div(end_lba, factor);
 		}
+
+		if (bad_lba < start_lba  || bad_lba >= end_lba)
+			/* the bad lba was reported incorrectly, we have
+			 * no idea where the error is
+			 */
+			goto out;
+
 		/* This computation should always be done in terms of
 		 * the resolution of the device's medium.
 		 */

drivers/scsi/ses.c

···
+/*
+ * SCSI Enclosure Services
+ *
+ * Copyright (C) 2008 James Bottomley <[e-mail]>
+ *
+**-----------------------------------------------------------------------------
+**
+**  This program is free software; you can redistribute it and/or
+**  modify it under the terms of the GNU General Public License
+**  version 2 as published by the Free Software Foundation.
+**
+**  This program is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**  GNU General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this program; if not, write to the Free Software
+**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+*/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/enclosure.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_dbg.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_driver.h>
+#include <scsi/scsi_host.h>
+
+struct ses_device {
+	char *page1;
+	char *page2;
+	char *page10;
+	short page1_len;
+	short page2_len;
+	short page10_len;
+};
+
+struct ses_component {
+	u64 addr;
+	unsigned char *desc;
+};
+
+static int ses_probe(struct device *dev)
+{
+	struct scsi_device *sdev = to_scsi_device(dev);
+	int err = -ENODEV;
+
+	if (sdev->type != TYPE_ENCLOSURE)
+		goto out;
+
+	err = 0;
+	sdev_printk(KERN_NOTICE, sdev, "Attached Enclosure device\n");
+
+ out:
+	return err;
+}
+
+#define SES_TIMEOUT 30
+#define SES_RETRIES 3
+
+static int ses_recv_diag(struct scsi_device *sdev, int page_code,
+			 void *buf, int bufflen)
+{
+	char cmd[] = {
+		RECEIVE_DIAGNOSTIC,
+		1,		/* Set PCV bit */
+		page_code,
+		bufflen >> 8,
+		bufflen & 0xff,
+		0
+	};
+
+	return scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf, bufflen,
+				NULL, SES_TIMEOUT, SES_RETRIES);
+}
+
+static int ses_send_diag(struct scsi_device *sdev, int page_code,
+			 void *buf, int bufflen)
+{
+	u32 result;
+
+	char cmd[] = {
+		SEND_DIAGNOSTIC,
+		0x10,		/* Set PF bit */
+		0,
+		bufflen >> 8,
+		bufflen & 0xff,
+		0
+	};
+
+	result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, buf, bufflen,
+				  NULL, SES_TIMEOUT, SES_RETRIES);
+	if (result)
+		sdev_printk(KERN_ERR, sdev, "SEND DIAGNOSTIC result: %8x\n",
+			    result);
+	return result;
+}
+
+static int ses_set_page2_descriptor(struct enclosure_device *edev,
+				      struct enclosure_component *ecomp,
+				      char *desc)
+{
+	int i, j, count = 0, descriptor = ecomp->number;
+	struct scsi_device *sdev = to_scsi_device(edev->cdev.dev);
+	struct ses_device *ses_dev = edev->scratch;
+	char *type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
+	char *desc_ptr = ses_dev->page2 + 8;
+
+	/* Clear everything */
+	memset(desc_ptr, 0, ses_dev->page2_len - 8);
+	for (i = 0; i < ses_dev->page1[10]; i++, type_ptr += 4) {
+		for (j = 0; j < type_ptr[1]; j++) {
+			desc_ptr += 4;
+			if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
+			    type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
+				continue;
+			if (count++ == descriptor) {
+				memcpy(desc_ptr, desc, 4);
+				/* set select */
+				desc_ptr[0] |= 0x80;
+				/* clear reserved, just in case */
+				desc_ptr[0] &= 0xf0;
+			}
+		}
+	}
+
+	return ses_send_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
+}
+
+static char *ses_get_page2_descriptor(struct enclosure_device *edev,
+				      struct enclosure_component *ecomp)
+{
+	int i, j, count = 0, descriptor = ecomp->number;
+	struct scsi_device *sdev = to_scsi_device(edev->cdev.dev);
+	struct ses_device *ses_dev = edev->scratch;
+	char *type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
+	char *desc_ptr = ses_dev->page2 + 8;
+
+	ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
+
+	for (i = 0; i < ses_dev->page1[10]; i++, type_ptr += 4) {
+		for (j = 0; j < type_ptr[1]; j++) {
+			desc_ptr += 4;
+			if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
+			    type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
+				continue;
+			if (count++ == descriptor)
+				return desc_ptr;
+		}
+	}
+	return NULL;
+}
+
+static void ses_get_fault(struct enclosure_device *edev,
+			  struct enclosure_component *ecomp)
+{
+	char *desc;
+
+	desc = ses_get_page2_descriptor(edev, ecomp);
+	ecomp->fault = (desc[3] & 0x60) >> 4;
+}
+
+static int ses_set_fault(struct enclosure_device *edev,
+			  struct enclosure_component *ecomp,
+			 enum enclosure_component_setting val)
+{
+	char desc[4] = {0 };
+
+	switch (val) {
+	case ENCLOSURE_SETTING_DISABLED:
+		/* zero is disabled */
+		break;
+	case ENCLOSURE_SETTING_ENABLED:
+		desc[2] = 0x02;
+		break;
+	default:
+		/* SES doesn't do the SGPIO blink settings */
+		return -EINVAL;
+	}
+
+	return ses_set_page2_descriptor(edev, ecomp, desc);
+}
+
+static void ses_get_status(struct enclosure_device *edev,
+			   struct enclosure_component *ecomp)
+{
+	char *desc;
+
+	desc = ses_get_page2_descriptor(edev, ecomp);
+	ecomp->status = (desc[0] & 0x0f);
+}
+
+static void ses_get_locate(struct enclosure_device *edev,
+			   struct enclosure_component *ecomp)
+{
+	char *desc;
+
+	desc = ses_get_page2_descriptor(edev, ecomp);
+	ecomp->locate = (desc[2] & 0x02) ? 1 : 0;
+}
+
+static int ses_set_locate(struct enclosure_device *edev,
+			  struct enclosure_component *ecomp,
+			  enum enclosure_component_setting val)
+{
+	char desc[4] = {0 };
+
+	switch (val) {
+	case ENCLOSURE_SETTING_DISABLED:
+		/* zero is disabled */
+		break;
+	case ENCLOSURE_SETTING_ENABLED:
+		desc[2] = 0x02;
+		break;
+	default:
+		/* SES doesn't do the SGPIO blink settings */
+		return -EINVAL;
+	}
+	return ses_set_page2_descriptor(edev, ecomp, desc);
+}
+
+static int ses_set_active(struct enclosure_device *edev,
+			  struct enclosure_component *ecomp,
+			  enum enclosure_component_setting val)
+{
+	char desc[4] = {0 };
+
+	switch (val) {
+	case ENCLOSURE_SETTING_DISABLED:
+		/* zero is disabled */
+		ecomp->active = 0;
+		break;
+	case ENCLOSURE_SETTING_ENABLED:
+		desc[2] = 0x80;
+		ecomp->active = 1;
+		break;
+	default:
+		/* SES doesn't do the SGPIO blink settings */
+		return -EINVAL;
+	}
+	return ses_set_page2_descriptor(edev, ecomp, desc);
+}
+
+static struct enclosure_component_callbacks ses_enclosure_callbacks = {
+	.get_fault		= ses_get_fault,
+	.set_fault		= ses_set_fault,
+	.get_status		= ses_get_status,
+	.get_locate		= ses_get_locate,
+	.set_locate		= ses_set_locate,
+	.set_active		= ses_set_active,
+};
+
+struct ses_host_edev {
+	struct Scsi_Host *shost;
+	struct enclosure_device *edev;
+};
+
+int ses_match_host(struct enclosure_device *edev, void *data)
+{
+	struct ses_host_edev *sed = data;
+	struct scsi_device *sdev;
+
+	if (!scsi_is_sdev_device(edev->cdev.dev))
+		return 0;
+
+	sdev = to_scsi_device(edev->cdev.dev);
+
+	if (sdev->host != sed->shost)
+		return 0;
+
+	sed->edev = edev;
+	return 1;
+}
+
+static void ses_process_descriptor(struct enclosure_component *ecomp,
+				   unsigned char *desc)
+{
+	int eip = desc[0] & 0x10;
+	int invalid = desc[0] & 0x80;
+	enum scsi_protocol proto = desc[0] & 0x0f;
+	u64 addr = 0;
+	struct ses_component *scomp = ecomp->scratch;
+	unsigned char *d;
+
+	scomp->desc = desc;
+
+	if (invalid)
+		return;
+
+	switch (proto) {
+	case SCSI_PROTOCOL_SAS:
+		if (eip)
+			d = desc + 8;
+		else
+			d = desc + 4;
+		/* only take the phy0 addr */
+		addr = (u64)d[12] << 56 |
+			(u64)d[13] << 48 |
+			(u64)d[14] << 40 |
+			(u64)d[15] << 32 |
+			(u64)d[16] << 24 |
+			(u64)d[17] << 16 |
+			(u64)d[18] << 8 |
+			(u64)d[19];
+		break;
+	default:
+		/* FIXME: Need to add more protocols than just SAS */
+		break;
+	}
+	scomp->addr = addr;
+}
+
+struct efd {
+	u64 addr;
+	struct device *dev;
+};
+
+static int ses_enclosure_find_by_addr(struct enclosure_device *edev,
+				      void *data)
+{
+	struct efd *efd = data;
+	int i;
+	struct ses_component *scomp;
+
+	if (!edev->component[0].scratch)
+		return 0;
+
+	for (i = 0; i < edev->components; i++) {
+		scomp = edev->component[i].scratch;
+		if (scomp->addr != efd->addr)
+			continue;
+
+		enclosure_add_device(edev, i, efd->dev);
+		return 1;
+	}
+	return 0;
+}
+
+#define VPD_INQUIRY_SIZE 512
+
+static void ses_match_to_enclosure(struct enclosure_device *edev,
+				   struct scsi_device *sdev)
+{
+	unsigned char *buf = kmalloc(VPD_INQUIRY_SIZE, GFP_KERNEL);
+	unsigned char *desc;
+	int len;
+	struct efd efd = {
+		.addr = 0,
+	};
+	unsigned char cmd[] = {
+		INQUIRY,
+		1,
+		0x83,
+		VPD_INQUIRY_SIZE >> 8,
+		VPD_INQUIRY_SIZE & 0xff,
+		0
+	};
+
+	if (!buf)
+		return;
+
+	if (scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf,
+			     VPD_INQUIRY_SIZE, NULL, SES_TIMEOUT, SES_RETRIES))
+		goto free;
+
+	len = (buf[2] << 8) + buf[3];
+	desc = buf + 4;
+	while (desc < buf + len) {
+		enum scsi_protocol proto = desc[0] >> 4;
+		u8 code_set = desc[0] & 0x0f;
+		u8 piv = desc[1] & 0x80;
+		u8 assoc = (desc[1] & 0x30) >> 4;
+		u8 type = desc[1] & 0x0f;
+		u8 len = desc[3];
+
+		if (piv && code_set == 1 && assoc == 1 && code_set == 1
+		    && proto == SCSI_PROTOCOL_SAS && type == 3 && len == 8)
+			efd.addr = (u64)desc[4] << 56 |
+				(u64)desc[5] << 48 |
+				(u64)desc[6] << 40 |
+				(u64)desc[7] << 32 |
+				(u64)desc[8] << 24 |
+				(u64)desc[9] << 16 |
+				(u64)desc[10] << 8 |
+				(u64)desc[11];
+
+		desc += len + 4;
+	}
+	if (!efd.addr)
+		goto free;
+
+	efd.dev = &sdev->sdev_gendev;
+
+	enclosure_for_each_device(ses_enclosure_find_by_addr, &efd);
+ free:
+	kfree(buf);
+}
+
+#define INIT_ALLOC_SIZE 32
+
+static int ses_intf_add(struct class_device *cdev,
+			struct class_interface *intf)
+{
+	struct scsi_device *sdev = to_scsi_device(cdev->dev);
+	struct scsi_device *tmp_sdev;
+	unsigned char *buf = NULL, *hdr_buf, *type_ptr, *desc_ptr,
+		*addl_desc_ptr;
+	struct ses_device *ses_dev;
+	u32 result;
+	int i, j, types, len, components = 0;
+	int err = -ENOMEM;
+	struct enclosure_device *edev;
+	struct ses_component *scomp;
+
+	if (!scsi_device_enclosure(sdev)) {
+		/* not an enclosure, but might be in one */
+		edev = 	enclosure_find(&sdev->host->shost_gendev);
+		if (edev) {
+			ses_match_to_enclosure(edev, sdev);
+			class_device_put(&edev->cdev);
+		}
+		return -ENODEV;
+	}
+
+	/* TYPE_ENCLOSURE prints a message in probe */
+	if (sdev->type != TYPE_ENCLOSURE)
+		sdev_printk(KERN_NOTICE, sdev, "Embedded Enclosure Device\n");
+
+	ses_dev = kzalloc(sizeof(*ses_dev), GFP_KERNEL);
+	hdr_buf = kzalloc(INIT_ALLOC_SIZE, GFP_KERNEL);
+	if (!hdr_buf || !ses_dev)
+		goto err_init_free;
+
+	result = ses_recv_diag(sdev, 1, hdr_buf, INIT_ALLOC_SIZE);
+	if (result)
+		goto recv_failed;
+
+	if (hdr_buf[1] != 0) {
+		/* FIXME: need subenclosure support; I've just never
+		 * seen a device with subenclosures and it makes the
+		 * traversal routines more complex */
+		sdev_printk(KERN_ERR, sdev,
+			"FIXME driver has no support for subenclosures (%d)\n",
+			buf[1]);
+		goto err_free;
+	}
+
+	len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
+	buf = kzalloc(len, GFP_KERNEL);
+	if (!buf)
+		goto err_free;
+
+	ses_dev->page1 = buf;
+	ses_dev->page1_len = len;
+
+	result = ses_recv_diag(sdev, 1, buf, len);
+	if (result)
+		goto recv_failed;
+
+	types = buf[10];
+	len = buf[11];
+
+	type_ptr = buf + 12 + len;
+
+	for (i = 0; i < types; i++, type_ptr += 4) {
+		if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
+		    type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE)
+			components += type_ptr[1];
+	}
+
+	result = ses_recv_diag(sdev, 2, hdr_buf, INIT_ALLOC_SIZE);
+	if (result)
+		goto recv_failed;
+
+	len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
+	buf = kzalloc(len, GFP_KERNEL);
+	if (!buf)
+		goto err_free;
+
+	/* make sure getting page 2 actually works */
+	result = ses_recv_diag(sdev, 2, buf, len);
+	if (result)
+		goto recv_failed;
+	ses_dev->page2 = buf;
+	ses_dev->page2_len = len;
+
+	/* The additional information page --- allows us
+	 * to match up the devices */
+	result = ses_recv_diag(sdev, 10, hdr_buf, INIT_ALLOC_SIZE);
+	if (result)
+		goto no_page10;
+
+	len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
+	buf = kzalloc(len, GFP_KERNEL);
+	if (!buf)
+		goto err_free;
+
+	result = ses_recv_diag(sdev, 10, buf, len);
+	if (result)
+		goto recv_failed;
+	ses_dev->page10 = buf;
+	ses_dev->page10_len = len;
+
+ no_page10:
+	scomp = kmalloc(sizeof(struct ses_component) * components, GFP_KERNEL);
+	if (!scomp)
+		goto  err_free;
+
+	edev = enclosure_register(cdev->dev, sdev->sdev_gendev.bus_id,
+				  components, &ses_enclosure_callbacks);
+	if (IS_ERR(edev)) {
+		err = PTR_ERR(edev);
+		goto err_free;
+	}
+
+	edev->scratch = ses_dev;
+	for (i = 0; i < components; i++)
+		edev->component[i].scratch = scomp++;
+
+	/* Page 7 for the descriptors is optional */
+	buf = NULL;
+	result = ses_recv_diag(sdev, 7, hdr_buf, INIT_ALLOC_SIZE);
+	if (result)
+		goto simple_populate;
+
+	len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
+	/* add 1 for trailing '\0' we'll use */
+	buf = kzalloc(len + 1, GFP_KERNEL);
+	result = ses_recv_diag(sdev, 7, buf, len);
+	if (result) {
+ simple_populate:
+		kfree(buf);
+		buf = NULL;
+		desc_ptr = NULL;
+		addl_desc_ptr = NULL;
+	} else {
+		desc_ptr = buf + 8;
+		len = (desc_ptr[2] << 8) + desc_ptr[3];
+		/* skip past overall descriptor */
+		desc_ptr += len + 4;
+		addl_desc_ptr = ses_dev->page10 + 8;
+	}
+	type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
+	components = 0;
+	for (i = 0; i < types; i++, type_ptr += 4) {
+		for (j = 0; j < type_ptr[1]; j++) {
+			char *name = NULL;
+			struct enclosure_component *ecomp;
+
+			if (desc_ptr) {
+				len = (desc_ptr[2] << 8) + desc_ptr[3];
+				desc_ptr += 4;
+				/* Add trailing zero - pushes into
+				 * reserved space */
+				desc_ptr[len] = '\0';
+				name = desc_ptr;
+			}
+			if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
+			    type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
+				continue;
+			ecomp =	enclosure_component_register(edev,
+							     components++,
+							     type_ptr[0],
+							     name);
+			if (desc_ptr) {
+				desc_ptr += len;
+				if (!IS_ERR(ecomp))
+					ses_process_descriptor(ecomp,
+							       addl_desc_ptr);
+
+				if (addl_desc_ptr)
+					addl_desc_ptr += addl_desc_ptr[1] + 2;
+			}
+		}
+	}
+	kfree(buf);
+	kfree(hdr_buf);
+
+	/* see if there are any devices matching before
+	 * we found the enclosure */
+	shost_for_each_device(tmp_sdev, sdev->host) {
+		if (tmp_sdev->lun != 0 || scsi_device_enclosure(tmp_sdev))
+			continue;
+		ses_match_to_enclosure(edev, tmp_sdev);
+	}
+
+	return 0;
+
+ recv_failed:
+	sdev_printk(KERN_ERR, sdev, "Failed to get diagnostic page 0x%x\n",
+		    result);
+	err = -ENODEV;
+ err_free:
+	kfree(buf);
+	kfree(ses_dev->page10);
+	kfree(ses_dev->page2);
+	kfree(ses_dev->page1);
+ err_init_free:
+	kfree(ses_dev);
+	kfree(hdr_buf);
+	sdev_printk(KERN_ERR, sdev, "Failed to bind enclosure %d\n", err);
+	return err;
+}
+
+static int ses_remove(struct device *dev)
+{
+	return 0;
+}
+
+static void ses_intf_remove(struct class_device *cdev,
+			    struct class_interface *intf)
+{
+	struct scsi_device *sdev = to_scsi_device(cdev->dev);
+	struct enclosure_device *edev;
+	struct ses_device *ses_dev;
+
+	if (!scsi_device_enclosure(sdev))
+		return;
+
+	edev = enclosure_find(cdev->dev);
+	if (!edev)
+		return;
+
+	ses_dev = edev->scratch;
+	edev->scratch = NULL;
+
+	kfree(ses_dev->page1);
+	kfree(ses_dev->page2);
+	kfree(ses_dev);
+
+	kfree(edev->component[0].scratch);
+
+	class_device_put(&edev->cdev);
+	enclosure_unregister(edev);
+}
+
+static struct class_interface ses_interface = {
+	.add	= ses_intf_add,
+	.remove	= ses_intf_remove,
+};
+
+static struct scsi_driver ses_template = {
+	.owner			= THIS_MODULE,
+	.gendrv = {
+		.name		= "ses",
+		.probe		= ses_probe,
+		.remove		= ses_remove,
+	},
+};
+
+static int __init ses_init(void)
+{
+	int err;
+
+	err = scsi_register_interface(&ses_interface);
+	if (err)
+		return err;
+
+	err = scsi_register_driver(&ses_template.gendrv);
+	if (err)
+		goto out_unreg;
+
+	return 0;
+
+ out_unreg:
+	scsi_unregister_interface(&ses_interface);
+	return err;
+}
+
+static void __exit ses_exit(void)
+{
+	scsi_unregister_driver(&ses_template.gendrv);
+	scsi_unregister_interface(&ses_interface);
+}
+
+module_init(ses_init);
+module_exit(ses_exit);
+
+MODULE_ALIAS_SCSI_DEVICE(TYPE_ENCLOSURE);
+
+MODULE_AUTHOR("James Bottomley");
+MODULE_DESCRIPTION("SCSI Enclosure Services (ses) driver");
+MODULE_LICENSE("GPL v2");

drivers/scsi/sr.c

···
 	mutex_unlock(&sr_ref_mutex);
 }
 
+/* identical to scsi_test_unit_ready except that it doesn't
+ * eat the NOT_READY returns for removable media */
+int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr)
+{
+	int retries = MAX_RETRIES;
+	int the_result;
+	u8 cmd[] = {TEST_UNIT_READY, 0, 0, 0, 0, 0 };
+
+	/* issue TEST_UNIT_READY until the initial startup UNIT_ATTENTION
+	 * conditions are gone, or a timeout happens
+	 */
+	do {
+		the_result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL,
+					      0, sshdr, SR_TIMEOUT,
+					      retries--);
+
+	} while (retries > 0 &&
+		 (!scsi_status_is_good(the_result) ||
+		  (scsi_sense_valid(sshdr) &&
+		   sshdr->sense_key == UNIT_ATTENTION)));
+	return the_result;
+}
+
 /*
  * This function checks to see if the media has been changed in the
  * CDROM drive.  It is possible that we have already sensed a change,
···
 	}
 
 	sshdr =  kzalloc(sizeof(*sshdr), GFP_KERNEL);
-	retval = scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
-				      sshdr);
+	retval = sr_test_unit_ready(cd->device, sshdr);
 	if (retval || (scsi_sense_valid(sshdr) &&
 		       /* 0x3a is medium not present */
 		       sshdr->asc == 0x3a)) {
···
 {
 	unsigned char *buffer;
 	struct scsi_mode_data data;
-	unsigned char cmd[MAX_COMMAND_SIZE];
 	struct scsi_sense_hdr sshdr;
-	unsigned int the_result;
-	int retries, rc, n;
+	int rc, n;
 
 	static const char *loadmech[] =
 	{
···
 		return;
 	}
 
-	/* issue TEST_UNIT_READY until the initial startup UNIT_ATTENTION
-	 * conditions are gone, or a timeout happens
-	 */
-	retries = 0;
-	do {
-		memset((void *)cmd, 0, MAX_COMMAND_SIZE);
-		cmd[0] = TEST_UNIT_READY;
-
-		the_result = scsi_execute_req (cd->device, cmd, DMA_NONE, NULL,
-					       0, &sshdr, SR_TIMEOUT,
-					       MAX_RETRIES);
-
-		retries++;
-	} while (retries < 5 && 
-		 (!scsi_status_is_good(the_result) ||
-		  (scsi_sense_valid(&sshdr) &&
-		   sshdr.sense_key == UNIT_ATTENTION)));
+	/* eat unit attentions */
+	sr_test_unit_ready(cd->device, &sshdr);
 
 	/* ask for mode page 0x2a */
 	rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, 128,

drivers/scsi/sr.h

···
 int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *);
 
 int sr_is_xa(Scsi_CD *);
+int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr);
 
 /* sr_vendor.c */
 void sr_vendor_init(Scsi_CD *);

drivers/scsi/sr_ioctl.c

···
 		/* we have no changer support */
 		return -EINVAL;
 	}
-	if (0 == scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES,
-				      &sshdr))
+	if (0 == sr_test_unit_ready(cd->device, &sshdr))
 		return CDS_DISC_OK;
 
 	if (!cdrom_get_media_event(cdi, &med)) {

drivers/scsi/sun3x_esp.c

···
-/* sun3x_esp.c:  EnhancedScsiProcessor Sun3x SCSI driver code.
+/* sun3x_esp.c: ESP front-end for Sun3x systems.
  *
- * (C) 1999 Thomas Bogendoerfer ([e-mail])
- *
- * Based on David S. Miller's esp driver
+ * Copyright (C) 2007,2008 Thomas Bogendoerfer ([e-mail])
  */
 
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
 #include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
 
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
 #include <asm/sun3x.h>
+#include <asm/io.h>
+#include <asm/dma.h>
 #include <asm/dvma.h>
-#include <asm/irq.h>
 
-static void dma_barrier(struct NCR_ESP *esp);
-static int  dma_bytes_sent(struct NCR_ESP *esp, int fifo_count);
-static int  dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_drain(struct NCR_ESP *esp);
-static void dma_invalidate(struct NCR_ESP *esp);
-static void dma_dump_state(struct NCR_ESP *esp);
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length);
-static void dma_ints_off(struct NCR_ESP *esp);
-static void dma_ints_on(struct NCR_ESP *esp);
-static int  dma_irq_p(struct NCR_ESP *esp);
-static void dma_poll(struct NCR_ESP *esp, unsigned char *vaddr);
-static int  dma_ports_p(struct NCR_ESP *esp);
-static void dma_reset(struct NCR_ESP *esp);
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write);
-static void dma_mmu_get_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_get_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_release_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_mmu_release_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp);
-static void dma_advance_sg (Scsi_Cmnd *sp);
+/* DMA controller reg offsets */
+#define DMA_CSR		0x00UL	/* rw  DMA control/status register    0x00   */
+#define DMA_ADDR        0x04UL	/* rw  DMA transfer address register  0x04   */
+#define DMA_COUNT       0x08UL	/* rw  DMA transfer count register    0x08   */
+#define DMA_TEST        0x0cUL	/* rw  DMA test/debug register        0x0c   */
 
-/* Detecting ESP chips on the machine.  This is the simple and easy
- * version.
+#include <scsi/scsi_host.h>
+
+#include "esp_scsi.h"
+
+#define DRV_MODULE_NAME		"sun3x_esp"
+#define PFX DRV_MODULE_NAME	": "
+#define DRV_VERSION		"1.000"
+#define DRV_MODULE_RELDATE	"Nov 1, 2007"
+
+/*
+ * m68k always assumes readl/writel operate on little endian
+ * mmio space; this is wrong at least for Sun3x, so we
+ * need to workaround this until a proper way is found
  */
-int sun3x_esp_detect(struct scsi_host_template *tpnt)
+#if 0
+#define dma_read32(REG) \
+	readl(esp->dma_regs + (REG))
+#define dma_write32(VAL, REG) \
+	writel((VAL), esp->dma_regs + (REG))
+#else
+#define dma_read32(REG) \
+	*(volatile u32 *)(esp->dma_regs + (REG))
+#define dma_write32(VAL, REG) \
+	do { *(volatile u32 *)(esp->dma_regs + (REG)) = (VAL); } while (0)
+#endif
+
+static void sun3x_esp_write8(struct esp *esp, u8 val, unsigned long reg)
 {
-	struct NCR_ESP *esp;
-	struct ConfigDev *esp_dev;
-
-	esp_dev = 0;
-	esp = esp_allocate(tpnt, esp_dev, 0);
-
-	/* Do command transfer with DMA */
-	esp->do_pio_cmds = 0;
-
-	/* Required functions */
-	esp->dma_bytes_sent = &dma_bytes_sent;
-	esp->dma_can_transfer = &dma_can_transfer;
-	esp->dma_dump_state = &dma_dump_state;
-	esp->dma_init_read = &dma_init_read;
-	esp->dma_init_write = &dma_init_write;
-	esp->dma_ints_off = &dma_ints_off;
-	esp->dma_ints_on = &dma_ints_on;
-	esp->dma_irq_p = &dma_irq_p;
-	esp->dma_ports_p = &dma_ports_p;
-	esp->dma_setup = &dma_setup;
-
-	/* Optional functions */
-	esp->dma_barrier = &dma_barrier;
-	esp->dma_invalidate = &dma_invalidate;
-	esp->dma_drain = &dma_drain;
-	esp->dma_irq_entry = 0;
-	esp->dma_irq_exit = 0;
-	esp->dma_led_on = 0;
-	esp->dma_led_off = 0;
-	esp->dma_poll = &dma_poll;
-	esp->dma_reset = &dma_reset;
-
-        /* virtual DMA functions */
-        esp->dma_mmu_get_scsi_one = &dma_mmu_get_scsi_one;
-        esp->dma_mmu_get_scsi_sgl = &dma_mmu_get_scsi_sgl;
-        esp->dma_mmu_release_scsi_one = &dma_mmu_release_scsi_one;
-        esp->dma_mmu_release_scsi_sgl = &dma_mmu_release_scsi_sgl;
-        esp->dma_advance_sg = &dma_advance_sg;
-	    
-	/* SCSI chip speed */
-	esp->cfreq = 20000000;
-	esp->eregs = (struct ESP_regs *)(SUN3X_ESP_BASE);
-	esp->dregs = (void *)SUN3X_ESP_DMA;
-
-	esp->esp_command = (volatile unsigned char *)dvma_malloc(DVMA_PAGE_SIZE);
-	esp->esp_command_dvma = dvma_vtob((unsigned long)esp->esp_command);
-
-	esp->irq = 2;
-	if (request_irq(esp->irq, esp_intr, IRQF_DISABLED,
-			"SUN3X SCSI", esp->ehost)) {
-		esp_deallocate(esp);
-		return 0;
-	}
-
-	esp->scsi_id = 7;
-	esp->diff = 0;
-
-	esp_initialize(esp);
-
- 	/* for reasons beyond my knowledge (and which should likely be fixed)
- 	   sync mode doesn't work on a 3/80 at 5mhz.  but it does at 4. */
- 	esp->sync_defp = 0x3f;
-
-	printk("ESP: Total of %d ESP hosts found, %d actually in use.\n", nesps,
-	       esps_in_use);
-	esps_running = esps_in_use;
-	return esps_in_use;
+	writeb(val, esp->regs + (reg * 4UL));
 }
 
-static void dma_do_drain(struct NCR_ESP *esp)
+static u8 sun3x_esp_read8(struct esp *esp, unsigned long reg)
 {
- 	struct sparc_dma_registers *dregs =
- 		(struct sparc_dma_registers *) esp->dregs;
- 	
- 	int count = 500000;
- 
- 	while((dregs->cond_reg & DMA_PEND_READ) && (--count > 0)) 
- 		udelay(1);
- 
- 	if(!count) {
- 		printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- 	}
- 
- 	dregs->cond_reg |= DMA_FIFO_STDRAIN;
- 	
- 	count = 500000;
- 
- 	while((dregs->cond_reg & DMA_FIFO_ISDRAIN) && (--count > 0)) 
- 		udelay(1);
- 
- 	if(!count) {
- 		printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- 	}
- 
-}
- 
-static void dma_barrier(struct NCR_ESP *esp)
-{
-  	struct sparc_dma_registers *dregs =
-  		(struct sparc_dma_registers *) esp->dregs;
- 	int count = 500000;
-  
- 	while((dregs->cond_reg & DMA_PEND_READ) && (--count > 0))
-  		udelay(1);
- 
- 	if(!count) {
- 		printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
- 	}
- 
-  	dregs->cond_reg &= ~(DMA_ENABLE);
+	return readb(esp->regs + (reg * 4UL));
 }
 
-/* This uses various DMA csr fields and the fifo flags count value to
- * determine how many bytes were successfully sent/received by the ESP.
- */
-static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
+static dma_addr_t sun3x_esp_map_single(struct esp *esp, void *buf,
+				      size_t sz, int dir)
 {
-	struct sparc_dma_registers *dregs = 
-		(struct sparc_dma_registers *) esp->dregs;
-
-	int rval = dregs->st_addr - esp->esp_command_dvma;
-
-	return rval - fifo_count;
+	return dma_map_single(esp->dev, buf, sz, dir);
 }
 
-static int dma_can_transfer(struct NCR_ESP *esp, Scsi_Cmnd *sp)
+static int sun3x_esp_map_sg(struct esp *esp, struct scatterlist *sg,
+				  int num_sg, int dir)
 {
-	return sp->SCp.this_residual;
+	return dma_map_sg(esp->dev, sg, num_sg, dir);
 }
 
-static void dma_drain(struct NCR_ESP *esp)
+static void sun3x_esp_unmap_single(struct esp *esp, dma_addr_t addr,
+				  size_t sz, int dir)
 {
-	struct sparc_dma_registers *dregs =
-		(struct sparc_dma_registers *) esp->dregs;
-	int count = 500000;
+	dma_unmap_single(esp->dev, addr, sz, dir);
+}
 
-	if(dregs->cond_reg & DMA_FIFO_ISDRAIN) {
-		dregs->cond_reg |= DMA_FIFO_STDRAIN;
-		while((dregs->cond_reg & DMA_FIFO_ISDRAIN) && (--count > 0))
-			udelay(1);
-		if(!count) {
-			printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
+static void sun3x_esp_unmap_sg(struct esp *esp, struct scatterlist *sg,
+			      int num_sg, int dir)
+{
+	dma_unmap_sg(esp->dev, sg, num_sg, dir);
+}
+
+static int sun3x_esp_irq_pending(struct esp *esp)
+{
+	if (dma_read32(DMA_CSR) & (DMA_HNDL_INTR | DMA_HNDL_ERROR))
+		return 1;
+	return 0;
+}
+
+static void sun3x_esp_reset_dma(struct esp *esp)
+{
+	u32 val;
+
+	val = dma_read32(DMA_CSR);
+	dma_write32(val | DMA_RST_SCSI, DMA_CSR);
+	dma_write32(val & ~DMA_RST_SCSI, DMA_CSR);
+
+	/* Enable interrupts.  */
+	val = dma_read32(DMA_CSR);
+	dma_write32(val | DMA_INT_ENAB, DMA_CSR);
+}
+
+static void sun3x_esp_dma_drain(struct esp *esp)
+{
+	u32 csr;
+	int lim;
+
+	csr = dma_read32(DMA_CSR);
+	if (!(csr & DMA_FIFO_ISDRAIN))
+		return;
+
+	dma_write32(csr | DMA_FIFO_STDRAIN, DMA_CSR);
+
+	lim = 1000;
+	while (dma_read32(DMA_CSR) & DMA_FIFO_ISDRAIN) {
+		if (--lim == 0) {
+			printk(KERN_ALERT PFX "esp%d: DMA will not drain!\n",
+			       esp->host->unique_id);
+			break;
 		}
-
-	}
-}
-
-static void dma_invalidate(struct NCR_ESP *esp)
-{
-	struct sparc_dma_registers *dregs =
-		(struct sparc_dma_registers *) esp->dregs;
-
-	__u32 tmp;
-	int count = 500000;
-
-	while(((tmp = dregs->cond_reg) & DMA_PEND_READ) && (--count > 0)) 
 		udelay(1);
-
-	if(!count) {
-		printk("%s:%d timeout CSR %08lx\n", __FILE__, __LINE__, dregs->cond_reg);
 	}
-
-	dregs->cond_reg = tmp | DMA_FIFO_INV;
-	dregs->cond_reg &= ~DMA_FIFO_INV;
-
 }
 
-static void dma_dump_state(struct NCR_ESP *esp)
+static void sun3x_esp_dma_invalidate(struct esp *esp)
 {
-	struct sparc_dma_registers *dregs =
-		(struct sparc_dma_registers *) esp->dregs;
+	u32 val;
+	int lim;
 
-	ESPLOG(("esp%d: dma -- cond_reg<%08lx> addr<%08lx>\n",
-		esp->esp_id, dregs->cond_reg, dregs->st_addr));
-}
-
-static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
-	struct sparc_dma_registers *dregs = 
-		(struct sparc_dma_registers *) esp->dregs;
-
-	dregs->st_addr = vaddress;
-	dregs->cond_reg |= (DMA_ST_WRITE | DMA_ENABLE);
-}
-
-static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length)
-{
-	struct sparc_dma_registers *dregs = 
-		(struct sparc_dma_registers *) esp->dregs;
-
-	/* Set up the DMA counters */
-
-	dregs->st_addr = vaddress;
-	dregs->cond_reg = ((dregs->cond_reg & ~(DMA_ST_WRITE)) | DMA_ENABLE);
-}
-
-static void dma_ints_off(struct NCR_ESP *esp)
-{
-	DMA_INTSOFF((struct sparc_dma_registers *) esp->dregs);
-}
-
-static void dma_ints_on(struct NCR_ESP *esp)
-{
-	DMA_INTSON((struct sparc_dma_registers *) esp->dregs);
-}
-
-static int dma_irq_p(struct NCR_ESP *esp)
-{
-	return DMA_IRQ_P((struct sparc_dma_registers *) esp->dregs);
-}
-
-static void dma_poll(struct NCR_ESP *esp, unsigned char *vaddr)
-{
-	int count = 50;
-	dma_do_drain(esp);
-
-	/* Wait till the first bits settle. */
-	while((*(volatile unsigned char *)vaddr == 0xff) && (--count > 0))
+	lim = 1000;
+	while ((val = dma_read32(DMA_CSR)) & DMA_PEND_READ) {
+		if (--lim == 0) {
+			printk(KERN_ALERT PFX "esp%d: DMA will not "
+			       "invalidate!\n", esp->host->unique_id);
+			break;
+		}
 		udelay(1);
-
-	if(!count) {
-//		printk("%s:%d timeout expire (data %02x)\n", __FILE__, __LINE__,
-//		       esp_read(esp->eregs->esp_fdata));
-		//mach_halt();
-		vaddr[0] = esp_read(esp->eregs->esp_fdata);
-		vaddr[1] = esp_read(esp->eregs->esp_fdata);
 	}
 
-}	
-
-static int dma_ports_p(struct NCR_ESP *esp)
-{
-	return (((struct sparc_dma_registers *) esp->dregs)->cond_reg 
-			& DMA_INT_ENAB);
+	val &= ~(DMA_ENABLE | DMA_ST_WRITE | DMA_BCNT_ENAB);
+	val |= DMA_FIFO_INV;
+	dma_write32(val, DMA_CSR);
+	val &= ~DMA_FIFO_INV;
+	dma_write32(val, DMA_CSR);
 }
 
-/* Resetting various pieces of the ESP scsi driver chipset/buses. */
-static void dma_reset(struct NCR_ESP *esp)
+static void sun3x_esp_send_dma_cmd(struct esp *esp, u32 addr, u32 esp_count,
+				  u32 dma_count, int write, u8 cmd)
 {
-	struct sparc_dma_registers *dregs =
-		(struct sparc_dma_registers *)esp->dregs;
+	u32 csr;
 
-	/* Punt the DVMA into a known state. */
-	dregs->cond_reg |= DMA_RST_SCSI;
-	dregs->cond_reg &= ~(DMA_RST_SCSI);
-	DMA_INTSON(dregs);
+	BUG_ON(!(cmd & ESP_CMD_DMA));
+
+	sun3x_esp_write8(esp, (esp_count >> 0) & 0xff, ESP_TCLOW);
+	sun3x_esp_write8(esp, (esp_count >> 8) & 0xff, ESP_TCMED);
+	csr = dma_read32(DMA_CSR);
+	csr |= DMA_ENABLE;
+	if (write)
+		csr |= DMA_ST_WRITE;
+	else
+		csr &= ~DMA_ST_WRITE;
+	dma_write32(csr, DMA_CSR);
+	dma_write32(addr, DMA_ADDR);
+
+	scsi_esp_cmd(esp, cmd);
 }
 
-static void dma_setup(struct NCR_ESP *esp, __u32 addr, int count, int write)
+static int sun3x_esp_dma_error(struct esp *esp)
 {
-	struct sparc_dma_registers *dregs = 
-		(struct sparc_dma_registers *) esp->dregs;
-	unsigned long nreg = dregs->cond_reg;
+	u32 csr = dma_read32(DMA_CSR);
 
-//	printk("dma_setup %c addr %08x cnt %08x\n",
-//	       write ? 'W' : 'R', addr, count);
+	if (csr & DMA_HNDL_ERROR)
+		return 1;
 
-	dma_do_drain(esp);
-
-	if(write)
-		nreg |= DMA_ST_WRITE;
-	else {
-		nreg &= ~(DMA_ST_WRITE);
-	}
-		
-	nreg |= DMA_ENABLE;
-	dregs->cond_reg = nreg;
-	dregs->st_addr = addr;
+	return 0;
 }
 
-static void dma_mmu_get_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-    sp->SCp.have_data_in = dvma_map((unsigned long)sp->SCp.buffer,
-				       sp->SCp.this_residual);
-    sp->SCp.ptr = (char *)((unsigned long)sp->SCp.have_data_in);
-}
-
-static void dma_mmu_get_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-    int sz = sp->SCp.buffers_residual;
-    struct scatterlist *sg = sp->SCp.buffer;
-
-    while (sz >= 0) {
-	    sg[sz].dma_address = dvma_map((unsigned long)sg_virt(&sg[sz]),
-					  sg[sz].length);
-	    sz--;
-    }
-    sp->SCp.ptr=(char *)((unsigned long)sp->SCp.buffer->dma_address);
-}
-
-static void dma_mmu_release_scsi_one (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-    dvma_unmap((char *)sp->SCp.have_data_in);
-}
-
-static void dma_mmu_release_scsi_sgl (struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-    int sz = sp->use_sg - 1;
-    struct scatterlist *sg = (struct scatterlist *)sp->request_buffer;
-                        
-    while(sz >= 0) {
-        dvma_unmap((char *)sg[sz].dma_address);
-        sz--;
-    }
-}
-
-static void dma_advance_sg (Scsi_Cmnd *sp)
-{
-    sp->SCp.ptr = (char *)((unsigned long)sp->SCp.buffer->dma_address);
-}
-
-static int sun3x_esp_release(struct Scsi_Host *instance)
-{
-	/* this code does not support being compiled as a module */	 
-	return 1;
-
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "sun3x_esp",
-	.proc_info		= &esp_proc_info,
-	.name			= "Sun ESP 100/100a/200",
-	.detect			= sun3x_esp_detect,
-	.release                = sun3x_esp_release,
-	.slave_alloc		= esp_slave_alloc,
-	.slave_destroy		= esp_slave_destroy,
-	.info			= esp_info,
-	.queuecommand		= esp_queue,
-	.eh_abort_handler	= esp_abort,
-	.eh_bus_reset_handler	= esp_reset,
-	.can_queue		= 7,
-	.this_id		= 7,
-	.sg_tablesize		= SG_ALL,
-	.cmd_per_lun		= 1,
-	.use_clustering		= DISABLE_CLUSTERING,
+static const struct esp_driver_ops sun3x_esp_ops = {
+	.esp_write8	=	sun3x_esp_write8,
+	.esp_read8	=	sun3x_esp_read8,
+	.map_single	=	sun3x_esp_map_single,
+	.map_sg		=	sun3x_esp_map_sg,
+	.unmap_single	=	sun3x_esp_unmap_single,
+	.unmap_sg	=	sun3x_esp_unmap_sg,
+	.irq_pending	=	sun3x_esp_irq_pending,
+	.reset_dma	=	sun3x_esp_reset_dma,
+	.dma_drain	=	sun3x_esp_dma_drain,
+	.dma_invalidate	=	sun3x_esp_dma_invalidate,
+	.send_dma_cmd	=	sun3x_esp_send_dma_cmd,
+	.dma_error	=	sun3x_esp_dma_error,
 };
 
+static int __devinit esp_sun3x_probe(struct platform_device *dev)
+{
+	struct scsi_host_template *tpnt = &scsi_esp_template;
+	struct Scsi_Host *host;
+	struct esp *esp;
+	struct resource *res;
+	int err = -ENOMEM;
 
-#include "scsi_module.c"
+	host = scsi_host_alloc(tpnt, sizeof(struct esp));
+	if (!host)
+		goto fail;
 
+	host->max_id = 8;
+	esp = shost_priv(host);
+
+	esp->host = host;
+	esp->dev = dev;
+	esp->ops = &sun3x_esp_ops;
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (!res && !res->start)
+		goto fail_unlink;
+
+	esp->regs = ioremap_nocache(res->start, 0x20);
+	if (!esp->regs)
+		goto fail_unmap_regs;
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 1);
+	if (!res && !res->start)
+		goto fail_unmap_regs;
+
+	esp->dma_regs = ioremap_nocache(res->start, 0x10);
+
+	esp->command_block = dma_alloc_coherent(esp->dev, 16,
+						&esp->command_block_dma,
+						GFP_KERNEL);
+	if (!esp->command_block)
+		goto fail_unmap_regs_dma;
+
+	host->irq = platform_get_irq(dev, 0);
+	err = request_irq(host->irq, scsi_esp_intr, IRQF_SHARED,
+			  "SUN3X ESP", esp);
+	if (err < 0)
+		goto fail_unmap_command_block;
+
+	esp->scsi_id = 7;
+	esp->host->this_id = esp->scsi_id;
+	esp->scsi_id_mask = (1 << esp->scsi_id);
+	esp->cfreq = 20000000;
+
+	dev_set_drvdata(&dev->dev, esp);
+
+	err = scsi_esp_register(esp, &dev->dev);
+	if (err)
+		goto fail_free_irq;
+
+	return 0;
+
+fail_free_irq:
+	free_irq(host->irq, esp);
+fail_unmap_command_block:
+	dma_free_coherent(esp->dev, 16,
+			  esp->command_block,
+			  esp->command_block_dma);
+fail_unmap_regs_dma:
+	iounmap(esp->dma_regs);
+fail_unmap_regs:
+	iounmap(esp->regs);
+fail_unlink:
+	scsi_host_put(host);
+fail:
+	return err;
+}
+
+static int __devexit esp_sun3x_remove(struct platform_device *dev)
+{
+	struct esp *esp = dev_get_drvdata(&dev->dev);
+	unsigned int irq = esp->host->irq;
+	u32 val;
+
+	scsi_esp_unregister(esp);
+
+	/* Disable interrupts.  */
+	val = dma_read32(DMA_CSR);
+	dma_write32(val & ~DMA_INT_ENAB, DMA_CSR);
+
+	free_irq(irq, esp);
+	dma_free_coherent(esp->dev, 16,
+			  esp->command_block,
+			  esp->command_block_dma);
+
+	scsi_host_put(esp->host);
+
+	return 0;
+}
+
+static struct platform_driver esp_sun3x_driver = {
+	.probe          = esp_sun3x_probe,
+	.remove         = __devexit_p(esp_sun3x_remove),
+	.driver = {
+		.name   = "sun3x_esp",
+	},
+};
+
+static int __init sun3x_esp_init(void)
+{
+	return platform_driver_register(&esp_sun3x_driver);
+}
+
+static void __exit sun3x_esp_exit(void)
+{
+	platform_driver_unregister(&esp_sun3x_driver);
+}
+
+MODULE_DESCRIPTION("Sun3x ESP SCSI driver");
+MODULE_AUTHOR("Thomas Bogendoerfer ([e-mail])");
 MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(sun3x_esp_init);
+module_exit(sun3x_esp_exit);

drivers/scsi/sym53c8xx_2/sym_hipd.c

···
 	if (cp->startp == cp->phys.head.lastp ||
 	    sym_evaluate_dp(np, cp, scr_to_cpu(cp->phys.head.lastp),
 			    &dp_ofs) < 0) {
-		return cp->data_len;
+		return cp->data_len - cp->odd_byte_adjustment;
 	}
 
 	/*

drivers/scsi/u14-34f.c

···
       cpp->xdir = DTD_IN;
       return;
       }
-   else if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
+   else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
       cpp->xdir = DTD_OUT;
       return;
       }

include/linux/enclosure.h

···
+/*
+ * Enclosure Services
+ *
+ * Copyright (C) 2008 James Bottomley <[e-mail]>
+ *
+**-----------------------------------------------------------------------------
+**
+**  This program is free software; you can redistribute it and/or
+**  modify it under the terms of the GNU General Public License
+**  version 2 as published by the Free Software Foundation.
+**
+**  This program is distributed in the hope that it will be useful,
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+**  GNU General Public License for more details.
+**
+**  You should have received a copy of the GNU General Public License
+**  along with this program; if not, write to the Free Software
+**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+*/
+#ifndef _LINUX_ENCLOSURE_H_
+#define _LINUX_ENCLOSURE_H_
+
+#include <linux/device.h>
+#include <linux/list.h>
+
+/* A few generic types ... taken from ses-2 */
+enum enclosure_component_type {
+	ENCLOSURE_COMPONENT_DEVICE = 0x01,
+	ENCLOSURE_COMPONENT_ARRAY_DEVICE = 0x17,
+};
+
+/* ses-2 common element status */
+enum enclosure_status {
+	ENCLOSURE_STATUS_UNSUPPORTED = 0,
+	ENCLOSURE_STATUS_OK,
+	ENCLOSURE_STATUS_CRITICAL,
+	ENCLOSURE_STATUS_NON_CRITICAL,
+	ENCLOSURE_STATUS_UNRECOVERABLE,
+	ENCLOSURE_STATUS_NOT_INSTALLED,
+	ENCLOSURE_STATUS_UNKNOWN,
+	ENCLOSURE_STATUS_UNAVAILABLE,
+};
+
+/* SFF-8485 activity light settings */
+enum enclosure_component_setting {
+	ENCLOSURE_SETTING_DISABLED = 0,
+	ENCLOSURE_SETTING_ENABLED = 1,
+	ENCLOSURE_SETTING_BLINK_A_ON_OFF = 2,
+	ENCLOSURE_SETTING_BLINK_A_OFF_ON = 3,
+	ENCLOSURE_SETTING_BLINK_B_ON_OFF = 6,
+	ENCLOSURE_SETTING_BLINK_B_OFF_ON = 7,
+};
+
+struct enclosure_device;
+struct enclosure_component;
+struct enclosure_component_callbacks {
+	void (*get_status)(struct enclosure_device *,
+			     struct enclosure_component *);
+	int (*set_status)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_status);
+	void (*get_fault)(struct enclosure_device *,
+			  struct enclosure_component *);
+	int (*set_fault)(struct enclosure_device *,
+			 struct enclosure_component *,
+			 enum enclosure_component_setting);
+	void (*get_active)(struct enclosure_device *,
+			   struct enclosure_component *);
+	int (*set_active)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_component_setting);
+	void (*get_locate)(struct enclosure_device *,
+			   struct enclosure_component *);
+	int (*set_locate)(struct enclosure_device *,
+			  struct enclosure_component *,
+			  enum enclosure_component_setting);
+};
+
+
+struct enclosure_component {
+	void *scratch;
+	struct class_device cdev;
+	enum enclosure_component_type type;
+	int number;
+	int fault;
+	int active;
+	int locate;
+	enum enclosure_status status;
+};
+
+struct enclosure_device {
+	void *scratch;
+	struct list_head node;
+	struct class_device cdev;
+	struct enclosure_component_callbacks *cb;
+	int components;
+	struct enclosure_component component[0];
+};
+
+static inline struct enclosure_device *
+to_enclosure_device(struct class_device *dev)
+{
+	return container_of(dev, struct enclosure_device, cdev);
+}
+
+static inline struct enclosure_component *
+to_enclosure_component(struct class_device *dev)
+{
+	return container_of(dev, struct enclosure_component, cdev);
+}
+
+struct enclosure_device *
+enclosure_register(struct device *, const char *, int,
+		   struct enclosure_component_callbacks *);
+void enclosure_unregister(struct enclosure_device *);
+struct enclosure_component *
+enclosure_component_register(struct enclosure_device *, unsigned int,
+				 enum enclosure_component_type, const char *);
+int enclosure_add_device(struct enclosure_device *enclosure, int component,
+			 struct device *dev);
+int enclosure_remove_device(struct enclosure_device *enclosure, int component);
+struct enclosure_device *enclosure_find(struct device *dev);
+int enclosure_for_each_device(int (*fn)(struct enclosure_device *, void *),
+			      void *data);
+
+#endif /* _LINUX_ENCLOSURE_H_ */

include/scsi/iscsi_proto.h

···
 /* initiator tags; opaque for target */
 typedef uint32_t __bitwise__ itt_t;
 /* below makes sense only for initiator that created this tag */
-#define build_itt(itt, id, age) ((__force itt_t)\
-	((itt) | ((id) << ISCSI_CID_SHIFT) | ((age) << ISCSI_AGE_SHIFT)))
+#define build_itt(itt, age) ((__force itt_t)\
+	((itt) | ((age) << ISCSI_AGE_SHIFT)))
 #define get_itt(itt) ((__force uint32_t)(itt_t)(itt) & ISCSI_ITT_MASK)
 #define RESERVED_ITT ((__force itt_t)0xffffffff)
 

include/scsi/libiscsi.h

···
 #define ISCSI_SUSPEND_BIT		1
 
 #define ISCSI_ITT_MASK			(0xfff)
-#define ISCSI_CID_SHIFT			12
-#define ISCSI_CID_MASK			(0xffff << ISCSI_CID_SHIFT)
 #define ISCSI_AGE_SHIFT			28
 #define ISCSI_AGE_MASK			(0xf << ISCSI_AGE_SHIFT)
 
···
 {
 	return (void*)ctask->hdr + ctask->hdr_len;
 }
+
+/* Connection's states */
+enum {
+	ISCSI_CONN_INITIAL_STAGE,
+	ISCSI_CONN_STARTED,
+	ISCSI_CONN_STOPPED,
+	ISCSI_CONN_CLEANUP_WAIT,
+};
 
 struct iscsi_conn {
 	struct iscsi_cls_conn	*cls_conn;	/* ptr to class connection */
···
 	struct kfifo		*queue;		/* FIFO Queue */
 	void			**pool;		/* Pool of elements */
 	int			max;		/* Max number of elements */
+};
+
+/* Session's states */
+enum {
+	ISCSI_STATE_FREE = 1,
+	ISCSI_STATE_LOGGED_IN,
+	ISCSI_STATE_FAILED,
+	ISCSI_STATE_TERMINATE,
+	ISCSI_STATE_IN_RECOVERY,
+	ISCSI_STATE_RECOVERY_FAILED,
+	ISCSI_STATE_LOGGING_OUT,
 };
 
 struct iscsi_session {
···
 #define session_to_cls(_sess) \
 	hostdata_session(_sess->host->hostdata)
 
+#define iscsi_session_printk(prefix, _sess, fmt, a...)	\
+	iscsi_cls_session_printk(prefix,		\
+		(struct iscsi_cls_session *)session_to_cls(_sess), fmt, ##a)
+
 /*
  * connection management
  */
···
 extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
 				enum iscsi_param param, char *buf);
 
+#define iscsi_conn_printk(prefix, _c, fmt, a...) \
+	iscsi_cls_conn_printk(prefix, _c->cls_conn, fmt, ##a)
+
 /*
  * pdu and task processing
  */
···
 				char *, uint32_t);
 extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
 			      char *, int);
-extern int __iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,
-				char *, int);
 extern int iscsi_verify_itt(struct iscsi_conn *, struct iscsi_hdr *,
 			    uint32_t *);
 extern void iscsi_requeue_ctask(struct iscsi_cmd_task *ctask);

include/scsi/scsi.h

···
 #define TYPE_RBC	    0x0e
 #define TYPE_NO_LUN         0x7f
 
+/* SCSI protocols; these are taken from SPC-3 section 7.5 */
+enum scsi_protocol {
+	SCSI_PROTOCOL_FCP = 0,	/* Fibre Channel */
+	SCSI_PROTOCOL_SPI = 1,	/* parallel SCSI */
+	SCSI_PROTOCOL_SSA = 2,	/* Serial Storage Architecture - Obsolete */
+	SCSI_PROTOCOL_SBP = 3,	/* firewire */
+	SCSI_PROTOCOL_SRP = 4,	/* Infiniband RDMA */
+	SCSI_PROTOCOL_ISCSI = 5,
+	SCSI_PROTOCOL_SAS = 6,
+	SCSI_PROTOCOL_ADT = 7,	/* Media Changers */
+	SCSI_PROTOCOL_ATA = 8,
+	SCSI_PROTOCOL_UNSPEC = 0xf, /* No specific protocol */
+};
+
 /* Returns a human-readable name for the device */
 extern const char * scsi_device_type(unsigned type);
 

include/scsi/scsi_host.h

···
 	 * If the host wants to be called before the scan starts, but
 	 * after the midlayer has set up ready for the scan, it can fill
 	 * in this function.
+	 *
+	 * Status: OPTIONAL
 	 */
 	void (* scan_start)(struct Scsi_Host *);
 
 	/*
-	 * fill in this function to allow the queue depth of this host
-	 * to be changeable (on a per device basis).  returns either
+	 * Fill in this function to allow the queue depth of this host
+	 * to be changeable (on a per device basis).  Returns either
 	 * the current queue depth setting (may be different from what
 	 * was passed in) or an error.  An error should only be
 	 * returned if the requested depth is legal but the driver was
 	 * unable to set it.  If the requested depth is illegal, the
 	 * driver should set and return the closest legal queue depth.
 	 *
+	 * Status: OPTIONAL
 	 */
 	int (* change_queue_depth)(struct scsi_device *, int);
 
 	/*
-	 * fill in this function to allow the changing of tag types
+	 * Fill in this function to allow the changing of tag types
 	 * (this also allows the enabling/disabling of tag command
 	 * queueing).  An error should only be returned if something
 	 * went wrong in the driver while trying to set the tag type.
 	 * If the driver doesn't support the requested tag type, then
 	 * it should set the closest type it does support without
 	 * returning an error.  Returns the actual tag type set.
+	 *
+	 * Status: OPTIONAL
 	 */
 	int (* change_queue_type)(struct scsi_device *, int);
 
 	/*
-	 * This function determines the bios parameters for a given
+	 * This function determines the BIOS parameters for a given
 	 * harddisk.  These tend to be numbers that are made up by
 	 * the host adapter.  Parameters:
 	 * size, device, list (heads, sectors, cylinders)
 	 *
-	 * Status: OPTIONAL */
+	 * Status: OPTIONAL
+	 */
 	int (* bios_param)(struct scsi_device *, struct block_device *,
 			sector_t, int []);
 
···
 
 	/*
 	 * This determines if we will use a non-interrupt driven
-	 * or an interrupt driven scheme,  It is set to the maximum number
+	 * or an interrupt driven scheme.  It is set to the maximum number
 	 * of simultaneous commands a given host adapter will accept.
 	 */
 	int can_queue;
···
 	unsigned short sg_tablesize;
 
 	/*
-	 * If the host adapter has limitations beside segment count
+	 * Set this if the host adapter has limitations beside segment count.
 	 */
 	unsigned short max_sectors;
 
 	/*
-	 * dma scatter gather segment boundary limit. a segment crossing this
+	 * DMA scatter gather segment boundary limit. A segment crossing this
 	 * boundary will be split in two.
 	 */
 	unsigned long dma_boundary;
···
 	 * This specifies "machine infinity" for host templates which don't
 	 * limit the transfer size.  Note this limit represents an absolute
 	 * maximum, and may be over the transfer limits allowed for
-	 * individual devices (e.g. 256 for SCSI-1)
+	 * individual devices (e.g. 256 for SCSI-1).
 	 */
 #define SCSI_DEFAULT_MAX_SECTORS	1024
 
···
 	unsigned supported_mode:2;
 
 	/*
-	 * true if this host adapter uses unchecked DMA onto an ISA bus.
+	 * True if this host adapter uses unchecked DMA onto an ISA bus.
 	 */
 	unsigned unchecked_isa_dma:1;
 
 	/*
-	 * true if this host adapter can make good use of clustering.
+	 * True if this host adapter can make good use of clustering.
 	 * I originally thought that if the tablesize was large that it
 	 * was a waste of CPU cycles to prepare a cluster list, but
 	 * it works out that the Buslogic is faster if you use a smaller
···
 	unsigned use_clustering:1;
 
 	/*
-	 * True for emulated SCSI host adapters (e.g. ATAPI)
+	 * True for emulated SCSI host adapters (e.g. ATAPI).
 	 */
 	unsigned emulated:1;
 
···
 	unsigned skip_settle_delay:1;
 
 	/*
-	 * ordered write support
+	 * True if we are using ordered write support.
 	 */
 	unsigned ordered_tag:1;
 
 	/*
-	 * Countdown for host blocking with no commands outstanding
+	 * Countdown for host blocking with no commands outstanding.
 	 */
 	unsigned int max_host_blocked;
 
···
 	struct scsi_transport_template *transportt;
 
 	/*
-	 * area to keep a shared tag map (if needed, will be
-	 * NULL if not)
+	 * Area to keep a shared tag map (if needed, will be
+	 * NULL if not).
 	 */
 	struct blk_queue_tag	*bqt;
 
···
 	/*
 	 * Host uses correct SCSI ordering not PC ordering. The bit is
 	 * set for the minority of drivers whose authors actually read
-	 * the spec ;)
+	 * the spec ;).
 	 */
 	unsigned reverse_ordering:1;
 
 	/*
-	 * ordered write support
+	 * Ordered write support
 	 */
 	unsigned ordered_tag:1;
 
-	/* task mgmt function in progress */
+	/* Task mgmt function in progress */
 	unsigned tmf_in_progress:1;
 
 	/* Asynchronous scan in progress */

include/scsi/scsi_transport_iscsi.h

···
 extern int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
 			  char *data, uint32_t data_size);
 
-
-/* Connection's states */
-#define ISCSI_CONN_INITIAL_STAGE	0
-#define ISCSI_CONN_STARTED		1
-#define ISCSI_CONN_STOPPED		2
-#define ISCSI_CONN_CLEANUP_WAIT		3
-
 struct iscsi_cls_conn {
 	struct list_head conn_list;	/* item in connlist */
 	void *dd_data;			/* LLD private data */
···
 #define iscsi_dev_to_conn(_dev) \
 	container_of(_dev, struct iscsi_cls_conn, dev)
 
-/* Session's states */
-#define ISCSI_STATE_FREE		1
-#define ISCSI_STATE_LOGGED_IN		2
-#define ISCSI_STATE_FAILED		3
-#define ISCSI_STATE_TERMINATE		4
-#define ISCSI_STATE_IN_RECOVERY		5
-#define ISCSI_STATE_RECOVERY_FAILED	6
-#define ISCSI_STATE_LOGGING_OUT		7
+#define iscsi_conn_to_session(_conn) \
+	iscsi_dev_to_session(_conn->dev.parent)
+
+/* iscsi class session state */
+enum {
+	ISCSI_SESSION_LOGGED_IN,
+	ISCSI_SESSION_FAILED,
+	ISCSI_SESSION_FREE,
+};
 
 struct iscsi_cls_session {
 	struct list_head sess_list;		/* item in session_list */
 	struct list_head host_list;
 	struct iscsi_transport *transport;
+	spinlock_t lock;
+	struct work_struct scan_work;
+	struct work_struct unbind_work;
 
 	/* recovery fields */
 	int recovery_tmo;
 	struct delayed_work recovery_work;
-	struct work_struct unbind_work;
 
 	int target_id;
 
+	int state;
 	int sid;				/* session id */
 	void *dd_data;				/* LLD private data */
 	struct device dev;	/* sysfs transport/container device */
···
 
 struct iscsi_host {
 	struct list_head sessions;
+	atomic_t nr_scans;
 	struct mutex mutex;
-	struct workqueue_struct *unbind_workq;
-	char unbind_workq_name[KOBJ_NAME_LEN];
+	struct workqueue_struct *scan_workq;
+	char scan_workq_name[KOBJ_NAME_LEN];
 };
 
 /*
  * session and connection functions that can be used by HW iSCSI LLDs
  */
+#define iscsi_cls_session_printk(prefix, _cls_session, fmt, a...) \
+	dev_printk(prefix, &(_cls_session)->dev, fmt, ##a)
+
+#define iscsi_cls_conn_printk(prefix, _cls_conn, fmt, a...) \
+	dev_printk(prefix, &(_cls_conn)->dev, fmt, ##a)
+
+extern int iscsi_session_chkready(struct iscsi_cls_session *session);
 extern struct iscsi_cls_session *iscsi_alloc_session(struct Scsi_Host *shost,
 					struct iscsi_transport *transport);
 extern int iscsi_add_session(struct iscsi_cls_session *session,
···
 extern int iscsi_destroy_conn(struct iscsi_cls_conn *conn);
 extern void iscsi_unblock_session(struct iscsi_cls_session *session);
 extern void iscsi_block_session(struct iscsi_cls_session *session);
-
+extern int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time);
 
 #endif