scsi: eata: eata-pio: Deprecate legacy EATA drivers

These two drivers do not appear to be in active use. Deprecate them.

Suggested-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

Documentation/scsi/scsi-parameters.txt

···
 			See drivers/scsi/BusLogic.c, comment before function
 			BusLogic_ParseDriverOptions().
 
-	eata=		[HW,SCSI]
-
 	fdomain=	[HW,SCSI]
 			See header of drivers/scsi/fdomain.c.
 

MAINTAINERS

···
 S:	Maintained
 F:	drivers/media/tuners/e4000*
 
-EATA ISA/EISA/PCI SCSI DRIVER
-M:	Dario Ballabio <[e-mail]>
-L:	[e-mail]
-S:	Maintained
-F:	drivers/scsi/eata.c
-
 EC100 MEDIA DRIVER
 M:	Antti Palosaari <[e-mail]>
 L:	[e-mail]

drivers/scsi/Kconfig

···
 	  To compile this driver as a module, choose M here: the
 	  module will be called dmx3191d.
 
-config SCSI_EATA
-	tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
-	depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
-	---help---
-	  This driver supports all EATA/DMA-compliant SCSI host adapters.  DPT
-	  ISA and all EISA I/O addresses are probed looking for the "EATA"
-	  signature. The addresses of all the PCI SCSI controllers reported
-          by the PCI subsystem are probed as well.
-
-	  You want to read the start of <file:drivers/scsi/eata.c> and 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 eata.
-
-config SCSI_EATA_TAGGED_QUEUE
-	bool "enable tagged command queueing"
-	depends on SCSI_EATA
-	help
-	  This is a feature of SCSI-2 which improves performance: the host
-	  adapter can send several SCSI commands to a device's queue even if
-	  previous commands haven't finished yet.
-	  This is equivalent to the "eata=tc:y" boot option.
-
-config SCSI_EATA_LINKED_COMMANDS
-	bool "enable elevator sorting"
-	depends on SCSI_EATA
-	help
-	  This option enables elevator sorting for all probed SCSI disks and
-	  CD-ROMs. It definitely reduces the average seek distance when doing
-	  random seeks, but this does not necessarily result in a noticeable
-	  performance improvement: your mileage may vary...
-	  This is equivalent to the "eata=lc:y" boot option.
-
-config SCSI_EATA_MAX_TAGS
-	int "maximum number of queued commands"
-	depends on SCSI_EATA
-	default "16"
-	help
-	  This specifies how many SCSI commands can be maximally queued for
-	  each probed SCSI device. You should reduce the default value of 16
-	  only if you have disks with buggy or limited tagged command support.
-	  Minimum is 2 and maximum is 62. This value is also the window size
-	  used by the elevator sorting option above. The effective value used
-	  by the driver for each probed SCSI device is reported at boot time.
-	  This is equivalent to the "eata=mq:8" boot option.
-
-config SCSI_EATA_PIO
-	tristate "EATA-PIO (old DPT PM2001, PM2012A) support"
-	depends on (ISA || EISA || PCI) && SCSI && BROKEN
-	---help---
-	  This driver supports all EATA-PIO protocol compliant SCSI Host
-	  Adapters like the DPT PM2001 and the PM2012A.  EATA-DMA compliant
-	  host adapters could also use this driver but are discouraged from
-	  doing so, since this driver only supports hard disks and lacks
-	  numerous features.  You might want to have a look at 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 eata_pio.
-
 config SCSI_FUTURE_DOMAIN
 	tristate "Future Domain 16xx SCSI/AHA-2920A support"
 	depends on (ISA || PCI) && SCSI

drivers/scsi/Makefile

···
 obj-$(CONFIG_SCSI_SMARTPQI)	+= smartpqi/
 obj-$(CONFIG_SCSI_SYM53C8XX_2)	+= sym53c8xx_2/
 obj-$(CONFIG_SCSI_ZALON)	+= zalon7xx.o
-obj-$(CONFIG_SCSI_EATA_PIO)	+= eata_pio.o
-obj-$(CONFIG_SCSI_EATA)		+= eata.o
 obj-$(CONFIG_SCSI_DC395x)	+= dc395x.o
 obj-$(CONFIG_SCSI_AM53C974)	+= esp_scsi.o	am53c974.o
 obj-$(CONFIG_CXLFLASH)		+= cxlflash/

drivers/scsi/eata.c

···
-/*
- *      eata.c - Low-level driver for EATA/DMA SCSI host adapters.
- *
- *      03 Jun 2003 Rev. 8.10 for linux-2.5.70
- *        + Update for new IRQ API.
- *        + Use "goto" when appropriate.
- *        + Drop eata.h.
- *        + Update for new module_param API.
- *        + Module parameters  can now be specified only in the
- *          same format as the kernel boot options.
- *
- *             boot option    old module param 
- *             -----------    ------------------
- *             addr,...       io_port=addr,...
- *             lc:[y|n]       linked_comm=[1|0]
- *             mq:xx          max_queue_depth=xx
- *             tm:[0|1|2]     tag_mode=[0|1|2]
- *             et:[y|n]       ext_tran=[1|0]
- *             rs:[y|n]       rev_scan=[1|0]
- *             ip:[y|n]       isa_probe=[1|0]
- *             ep:[y|n]       eisa_probe=[1|0]
- *             pp:[y|n]       pci_probe=[1|0]
- *
- *          A valid example using the new parameter format is:
- *          modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n"
- *
- *          which is equivalent to the old format:
- *          modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \
- *                        max_queue_depth=4 eisa_probe=0
- *
- *      12 Feb 2003 Rev. 8.04 for linux 2.5.60
- *        + Release irq before calling scsi_register.
- *
- *      12 Nov 2002 Rev. 8.02 for linux 2.5.47
- *        + Release driver_lock before calling scsi_register.
- *
- *      11 Nov 2002 Rev. 8.01 for linux 2.5.47
- *        + Fixed bios_param and scsicam_bios_param calling parameters.
- *
- *      28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4
- *        + Use new tcq and adjust_queue_depth api.
- *        + New command line option (tm:[0-2]) to choose the type of tags:
- *          0 -> disable tagging ; 1 -> simple tags  ; 2 -> ordered tags.
- *          Default is tm:0 (tagged commands disabled).
- *          For compatibility the "tc:" option is an alias of the "tm:"
- *          option; tc:n is equivalent to tm:0 and tc:y is equivalent to
- *          tm:1.
- *        + The tagged_comm module parameter has been removed, use tag_mode
- *          instead, equivalent to the "tm:" boot option.
- *
- *      10 Oct 2002 Rev. 7.70 for linux 2.5.42
- *        + Foreport from revision 6.70.
- *
- *      25 Jun 2002 Rev. 6.70 for linux 2.4.19
- *        + This release is the first one tested on a Big Endian platform:
- *          fixed endian-ness problem due to bitfields;
- *          fixed endian-ness problem in read_pio.
- *        + Added new options for selectively probing ISA, EISA and PCI bus:
- *
- *          Boot option   Parameter name    Default according to
- *
- *          ip:[y|n]      isa_probe=[1|0]   CONFIG_ISA  defined
- *          ep:[y|n]      eisa_probe=[1|0]  CONFIG_EISA defined
- *          pp:[y|n]      pci_probe=[1|0]   CONFIG_PCI  defined
- *
- *          The default action is to perform probing if the corresponding
- *          bus is configured and to skip probing otherwise.
- *
- *        + If pci_probe is in effect and a list of I/O  ports is specified
- *          as parameter or boot option, pci_enable_device() is performed
- *          on all pci devices matching PCI_CLASS_STORAGE_SCSI.
- *
- *      21 Feb 2002 Rev. 6.52 for linux 2.4.18
- *        + Backport from rev. 7.22 (use io_request_lock).
- *
- *      20 Feb 2002 Rev. 7.22 for linux 2.5.5
- *        + Remove any reference to virt_to_bus().
- *        + Fix pio hang while detecting multiple HBAs.
- *        + Fixed a board detection bug: in a system with
- *          multiple ISA/EISA boards, all but the first one
- *          were erroneously detected as PCI.
- *
- *      01 Jan 2002 Rev. 7.20 for linux 2.5.1
- *        + Use the dynamic DMA mapping API.
- *
- *      19 Dec 2001 Rev. 7.02 for linux 2.5.1
- *        + Use SCpnt->sc_data_direction if set.
- *        + Use sglist.page instead of sglist.address.
- *
- *      11 Dec 2001 Rev. 7.00 for linux 2.5.1
- *        + Use host->host_lock instead of io_request_lock.
- *
- *       1 May 2001 Rev. 6.05 for linux 2.4.4
- *        + Clean up all pci related routines.
- *        + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d)
- *
- *      30 Jan 2001 Rev. 6.04 for linux 2.4.1
- *        + Call pci_resource_start after pci_enable_device.
- *
- *      25 Jan 2001 Rev. 6.03 for linux 2.4.0
- *        + "check_region" call replaced by "request_region".
- *
- *      22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11
- *        + Return code checked when calling pci_enable_device.
- *        + Removed old scsi error handling support.
- *        + The obsolete boot option flag eh:n is silently ignored.
- *        + Removed error messages while a disk drive is powered up at
- *          boot time.
- *        + Improved boot messages: all tagged capable device are
- *          indicated as "tagged" or "soft-tagged" :
- *          - "soft-tagged"  means that the driver is trying to do its
- *            own tagging (i.e. the tc:y option is in effect);
- *          - "tagged" means that the device supports tagged commands,
- *            but the driver lets the HBA be responsible for tagging
- *            support.
- *
- *      16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18
- *        + Updated to the new __setup interface for boot command line options.
- *        + When loaded as a module, accepts the new parameter boot_options
- *          which value is a string with the same format of the kernel boot
- *          command line options. A valid example is:
- *          modprobe eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"'
- *
- *       9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17
- *        + 64bit cleanup for Linux/Alpha platform support
- *          (contribution from H.J. Lu).
- *
- *      22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11
- *        + Removed pre-2.2 source code compatibility.
- *        + Added call to pci_set_master.
- *
- *      26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
- *        + Added command line option (rs:[y|n]) to reverse the scan order
- *          of PCI boards. The default is rs:y, which reverses the BIOS order
- *          while registering PCI boards. The default value rs:y generates
- *          the same order of all previous revisions of this driver.
- *          Pls. note that "BIOS order" might have been reversed itself
- *          after the 2.1.9x PCI modifications in the linux kernel.
- *          The rs value is ignored when the explicit list of addresses
- *          is used by the "eata=port0,port1,..." command line option.
- *        + Added command line option (et:[y|n]) to force use of extended
- *          translation (255 heads, 63 sectors) as disk geometry.
- *          The default is et:n, which uses the disk geometry returned
- *          by scsicam_bios_param. The default value et:n is compatible with
- *          all previous revisions of this driver.
- *
- *      28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
- *          Increased busy timeout from 10 msec. to 200 msec. while
- *          processing interrupts.
- *
- *      16 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
- *          Improved abort handling during the eh recovery process.
- *
- *      13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
- *          The driver is now fully SMP safe, including the
- *          abort and reset routines.
- *          Added command line options (eh:[y|n]) to choose between
- *          new_eh_code and the old scsi code.
- *          If linux version >= 2.1.101 the default is eh:y, while the eh
- *          option is ignored for previous releases and the old scsi code
- *          is used.
- *
- *      18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
- *          Reworked interrupt handler.
- *
- *      11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
- *          Major reliability improvement: when a batch with overlapping
- *          requests is detected, requests are queued one at a time
- *          eliminating any possible board or drive reordering.
- *
- *      10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
- *          Improved SMP support (if linux version >= 2.1.95).
- *
- *       9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
- *          Added support for new PCI code and IO-APIC remapping of irqs.
- *          Performance improvement: when sequential i/o is detected,
- *          always use direct sort instead of reverse sort.
- *
- *       4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
- *          io_port is now unsigned long.
- *
- *      17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
- *          Use new scsi error handling code (if linux version >= 2.1.88).
- *          Use new interrupt code.
- *
- *      12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
- *          Use of udelay inside the wait loops to avoid timeout
- *          problems with fast cpus.
- *          Removed check about useless calls to the interrupt service
- *          routine (reported on SMP systems only).
- *          At initialization time "sorted/unsorted" is displayed instead
- *          of "linked/unlinked" to reinforce the fact that "linking" is
- *          nothing but "elevator sorting" in the actual implementation.
- *
- *      17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
- *          Use of serial_number_at_timeout in abort and reset processing.
- *          Use of the __initfunc and __initdata macro in setup code.
- *          Minor cleanups in the list_statistics code.
- *          Increased controller busy timeout in order to better support
- *          slow SCSI devices.
- *
- *      24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
- *          When loading as a module, parameter passing is now supported
- *          both in 2.0 and in 2.1 style.
- *          Fixed data transfer direction for some SCSI opcodes.
- *          Immediate acknowledge to request sense commands.
- *          Linked commands to each disk device are now reordered by elevator
- *          sorting. Rare cases in which reordering of write requests could
- *          cause wrong results are managed.
- *          Fixed spurious timeouts caused by long simple queue tag sequences.
- *          New command line option (tm:[0-3]) to choose the type of tags:
- *          0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered.
- *
- *      18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
- *          Added command line options to enable/disable linked commands
- *          (lc:[y|n]), tagged commands (tc:[y|n]) and to set the max queue
- *          depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16".
- *          Improved command linking.
- *          Documented how to setup RAID-0 with DPT SmartRAID boards.
- *
- *       8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
- *          Added linked command support.
- *          Improved detection of PCI boards using ISA base addresses.
- *
- *       3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
- *          Added support for tagged commands and queue depth adjustment.
- *
- *      22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
- *          When CONFIG_PCI is defined, BIOS32 is used to include in the
- *          list of i/o ports to be probed all the PCI SCSI controllers.
- *          The list of i/o ports to be probed can be overwritten by the
- *          "eata=port0,port1,...." boot command line option.
- *          Scatter/gather lists are now allocated by a number of kmalloc
- *          calls, in order to avoid the previous size limit of 64Kb.
- *
- *      16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
- *          Added support for EATA 2.0C, PCI, multichannel and wide SCSI.
- *
- *      27 Sep 1996 rev. 2.12 for linux 2.1.0
- *          Portability cleanups (virtual/bus addressing, little/big endian
- *          support).
- *
- *      09 Jul 1996 rev. 2.11 for linux 2.0.4
- *          Number of internal retries is now limited.
- *
- *      16 Apr 1996 rev. 2.10 for linux 1.3.90
- *          New argument "reset_flags" to the reset routine.
- *
- *       6 Jul 1995 rev. 2.01 for linux 1.3.7
- *          Update required by the new /proc/scsi support.
- *
- *      11 Mar 1995 rev. 2.00 for linux 1.2.0
- *          Fixed a bug which prevented media change detection for removable
- *          disk drives.
- *
- *      23 Feb 1995 rev. 1.18 for linux 1.1.94
- *          Added a check for scsi_register returning NULL.
- *
- *      11 Feb 1995 rev. 1.17 for linux 1.1.91
- *          Now DEBUG_RESET is disabled by default.
- *          Register a board even if it does not assert DMA protocol support
- *          (DPT SK2011B does not report correctly the dmasup bit).
- *
- *       9 Feb 1995 rev. 1.16 for linux 1.1.90
- *          Use host->wish_block instead of host->block.
- *          New list of Data Out SCSI commands.
- *
- *       8 Feb 1995 rev. 1.15 for linux 1.1.89
- *          Cleared target_time_out counter while performing a reset.
- *          All external symbols renamed to avoid possible name conflicts.
- *
- *      28 Jan 1995 rev. 1.14 for linux 1.1.86
- *          Added module support.
- *          Log and do a retry when a disk drive returns a target status
- *          different from zero on a recovered error.
- *
- *      24 Jan 1995 rev. 1.13 for linux 1.1.85
- *          Use optimized board configuration, with a measured performance
- *          increase in the range 10%-20% on i/o throughput.
- *
- *      16 Jan 1995 rev. 1.12 for linux 1.1.81
- *          Fix mscp structure comments (no functional change).
- *          Display a message if check_region detects a port address
- *          already in use.
- *
- *      17 Dec 1994 rev. 1.11 for linux 1.1.74
- *          Use the scsicam_bios_param routine. This allows an easy
- *          migration path from disk partition tables created using
- *          different SCSI drivers and non optimal disk geometry.
- *
- *      15 Dec 1994 rev. 1.10 for linux 1.1.74
- *          Added support for ISA EATA boards (DPT PM2011, DPT PM2021).
- *          The host->block flag is set for all the detected ISA boards.
- *          The detect routine no longer enforces LEVEL triggering
- *          for EISA boards, it just prints a warning message.
- *
- *      30 Nov 1994 rev. 1.09 for linux 1.1.68
- *          Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
- *          Added optional support for using a single board at a time.
- *
- *      18 Nov 1994 rev. 1.08 for linux 1.1.64
- *          Forces sg_tablesize = 64 and can_queue = 64 if these
- *          values are not correctly detected (DPT PM2012).
- *
- *      14 Nov 1994 rev. 1.07 for linux 1.1.63  Final BETA release.
- *      04 Aug 1994 rev. 1.00 for linux 1.1.39  First BETA release.
- *
- *
- *          This driver is based on the CAM (Common Access Method Committee)
- *          EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol.
- *
- *  Copyright (C) 1994-2003 Dario Ballabio ([e-mail])
- *
- *  Alternate email: [e-mail], [e-mail]
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that redistributions of source
- *  code retain the above copyright notice and this comment without
- *  modification.
- *
- */
-
-/*
- *
- *  Here is a brief description of the DPT SCSI host adapters.
- *  All these boards provide an EATA/DMA compatible programming interface
- *  and are fully supported by this driver in any configuration, including
- *  multiple SCSI channels:
- *
- *  PM2011B/9X -  Entry Level ISA
- *  PM2021A/9X -  High Performance ISA
- *  PM2012A       Old EISA
- *  PM2012B       Old EISA
- *  PM2022A/9X -  Entry Level EISA
- *  PM2122A/9X -  High Performance EISA
- *  PM2322A/9X -  Extra High Performance EISA
- *  PM3021     -  SmartRAID Adapter for ISA
- *  PM3222     -  SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI)
- *  PM3224     -  SmartRAID Adapter for PCI  (PM3224W is 16-bit wide SCSI)
- *  PM33340UW  -  SmartRAID Adapter for PCI  ultra wide multichannel
- *
- *  The above list is just an indication: as a matter of fact all DPT
- *  boards using the EATA/DMA protocol are supported by this driver,
- *  since they use exactely the same programming interface.
- *
- *  The DPT PM2001 provides only the EATA/PIO interface and hence is not
- *  supported by this driver.
- *
- *  This code has been tested with up to 3 Distributed Processing Technology
- *  PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers,
- *  in any combination of private and shared IRQ.
- *  PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS
- *  v003.D0, firmware v07G.0).
- *
- *  DPT SmartRAID boards support "Hardware Array" - a group of disk drives
- *  which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented
- *  in host adapter hardware. Hardware Arrays are fully compatible with this
- *  driver, since they look to it as a single disk drive.
- *
- *  WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix"
- *  as the current OS in the DPTMGR "Initial System Installation" menu.
- *  Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0),
- *  which is not supported by the actual SCSI subsystem.
- *  To get the "Array Group" functionality, the Linux MD driver must be used
- *  instead of the DPT "Array Group" feature.
- *
- *  Multiple ISA, EISA and PCI boards can be configured in the same system.
- *  It is suggested to put all the EISA boards on the same IRQ level, all
- *  the PCI  boards on another IRQ level, while ISA boards cannot share
- *  interrupts.
- *
- *  If you configure multiple boards on the same IRQ, the interrupt must
- *  be _level_ triggered (not _edge_ triggered).
- *
- *  This driver detects EATA boards by probes at fixed port addresses,
- *  so no BIOS32 or PCI BIOS support is required.
- *  The suggested way to detect a generic EATA PCI board is to force on it
- *  any unused EISA address, even if there are other controllers on the EISA
- *  bus, or even if you system has no EISA bus at all.
- *  Do not force any ISA address on EATA PCI boards.
- *
- *  If PCI bios support is configured into the kernel, BIOS32 is used to
- *  include in the list of i/o ports to be probed all the PCI SCSI controllers.
- *
- *  Due to a DPT BIOS "feature", it might not be possible to force an EISA
- *  address on more than a single DPT PCI board, so in this case you have to
- *  let the PCI BIOS assign the addresses.
- *
- *  The sequence of detection probes is:
- *
- *  - ISA 0x1F0;
- *  - PCI SCSI controllers (only if BIOS32 is available);
- *  - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15);
- *  - ISA  0x170, 0x230, 0x330.
- *
- *  The above list of detection probes can be totally replaced by the
- *  boot command line option: "eata=port0,port1,port2,...", where the
- *  port0, port1... arguments are ISA/EISA/PCI addresses to be probed.
- *  For example using "eata=0x7410,0x7450,0x230", the driver probes
- *  only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230,
- *  in this order; "eata=0" totally disables this driver.
- *
- *  After the optional list of detection probes, other possible command line
- *  options are:
- *
- *  et:y  force use of extended translation (255 heads, 63 sectors);
- *  et:n  use disk geometry detected by scsicam_bios_param;
- *  rs:y  reverse scan order while detecting PCI boards;
- *  rs:n  use BIOS order while detecting PCI boards;
- *  lc:y  enables linked commands;
- *  lc:n  disables linked commands;
- *  tm:0  disables tagged commands (same as tc:n);
- *  tm:1  use simple queue tags (same as tc:y);
- *  tm:2  use ordered queue tags (same as tc:2);
- *  mq:xx set the max queue depth to the value xx (2 <= xx <= 32).
- *
- *  The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n".
- *  An example using the list of detection probes could be:
- *  "eata=0x7410,0x230,lc:y,tm:2,mq:4,et:n".
- *
- *  When loading as a module, parameters can be specified as well.
- *  The above example would be (use 1 in place of y and 0 in place of n):
- *
- *  modprobe eata io_port=0x7410,0x230 linked_comm=1 \
- *                max_queue_depth=4 ext_tran=0 tag_mode=2 \
- *                rev_scan=1
- *
- *  ----------------------------------------------------------------------------
- *  In this implementation, linked commands are designed to work with any DISK
- *  or CD-ROM, since this linking has only the intent of clustering (time-wise)
- *  and reordering by elevator sorting commands directed to each device,
- *  without any relation with the actual SCSI protocol between the controller
- *  and the device.
- *  If Q is the queue depth reported at boot time for each device (also named
- *  cmds/lun) and Q > 2, whenever there is already an active command to the
- *  device all other commands to the same device  (up to Q-1) are kept waiting
- *  in the elevator sorting queue. When the active command completes, the
- *  commands in this queue are sorted by sector address. The sort is chosen
- *  between increasing or decreasing by minimizing the seek distance between
- *  the sector of the commands just completed and the sector of the first
- *  command in the list to be sorted.
- *  Trivial math assures that the unsorted average seek distance when doing
- *  random seeks over S sectors is S/3.
- *  When (Q-1) requests are uniformly distributed over S sectors, the average
- *  distance between two adjacent requests is S/((Q-1) + 1), so the sorted
- *  average seek distance for (Q-1) random requests over S sectors is S/Q.
- *  The elevator sorting hence divides the seek distance by a factor Q/3.
- *  The above pure geometric remarks are valid in all cases and the
- *  driver effectively reduces the seek distance by the predicted factor
- *  when there are Q concurrent read i/o operations on the device, but this
- *  does not necessarily results in a noticeable performance improvement:
- *  your mileage may vary....
- *
- *  Note: command reordering inside a batch of queued commands could cause
- *        wrong results only if there is at least one write request and the
- *        intersection (sector-wise) of all requests is not empty.
- *        When the driver detects a batch including overlapping requests
- *        (a really rare event) strict serial (pid) order is enforced.
- *  ----------------------------------------------------------------------------
- *  The extended translation option (et:y) is useful when using large physical
- *  disks/arrays. It could also be useful when switching between Adaptec boards
- *  and DPT boards without reformatting the disk.
- *  When a boot disk is partitioned with extended translation, in order to
- *  be able to boot it with a DPT board is could be necessary to add to
- *  lilo.conf additional commands as in the following example:
- *
- *  fix-table
- *  disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546
- *
- *  where the above geometry should be replaced with the one reported at
- *  power up by the DPT controller.
- *  ----------------------------------------------------------------------------
- *
- *  The boards are named EATA0, EATA1,... according to the detection order.
- *
- *  In order to support multiple ISA boards in a reliable way,
- *  the driver sets host->wish_block = 1 for all ISA boards.
- */
-
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/proc_fs.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/stat.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ctype.h>
-#include <linux/spinlock.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_tcq.h>
-#include <scsi/scsicam.h>
-
-static int eata2x_detect(struct scsi_host_template *);
-static int eata2x_release(struct Scsi_Host *);
-static int eata2x_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
-static int eata2x_eh_abort(struct scsi_cmnd *);
-static int eata2x_eh_host_reset(struct scsi_cmnd *);
-static int eata2x_bios_param(struct scsi_device *, struct block_device *,
-			     sector_t, int *);
-static int eata2x_slave_configure(struct scsi_device *);
-
-static struct scsi_host_template driver_template = {
-	.name = "EATA/DMA 2.0x rev. 8.10.00 ",
-	.detect = eata2x_detect,
-	.release = eata2x_release,
-	.queuecommand = eata2x_queuecommand,
-	.eh_abort_handler = eata2x_eh_abort,
-	.eh_host_reset_handler = eata2x_eh_host_reset,
-	.bios_param = eata2x_bios_param,
-	.slave_configure = eata2x_slave_configure,
-	.this_id = 7,
-	.unchecked_isa_dma = 1,
-	.use_clustering = ENABLE_CLUSTERING,
-};
-
-#if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
-
-/* Subversion values */
-#define ISA  0
-#define ESA 1
-
-#undef  FORCE_CONFIG
-
-#undef  DEBUG_LINKED_COMMANDS
-#undef  DEBUG_DETECT
-#undef  DEBUG_PCI_DETECT
-#undef  DEBUG_INTERRUPT
-#undef  DEBUG_RESET
-#undef  DEBUG_GENERATE_ERRORS
-#undef  DEBUG_GENERATE_ABORTS
-#undef  DEBUG_GEOMETRY
-
-#define MAX_ISA 4
-#define MAX_VESA 0
-#define MAX_EISA 15
-#define MAX_PCI 16
-#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
-#define MAX_CHANNEL 4
-#define MAX_LUN 32
-#define MAX_TARGET 32
-#define MAX_MAILBOXES 64
-#define MAX_SGLIST 64
-#define MAX_LARGE_SGLIST 122
-#define MAX_INTERNAL_RETRIES 64
-#define MAX_CMD_PER_LUN 2
-#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
-
-#define SKIP ULONG_MAX
-#define FREE 0
-#define IN_USE   1
-#define LOCKED   2
-#define IN_RESET 3
-#define IGNORE   4
-#define READY    5
-#define ABORTING 6
-#define NO_DMA  0xff
-#define MAXLOOP  10000
-#define TAG_DISABLED 0
-#define TAG_SIMPLE   1
-#define TAG_ORDERED  2
-
-#define REG_CMD         7
-#define REG_STATUS      7
-#define REG_AUX_STATUS  8
-#define REG_DATA        0
-#define REG_DATA2       1
-#define REG_SEE         6
-#define REG_LOW         2
-#define REG_LM          3
-#define REG_MID         4
-#define REG_MSB         5
-#define REGION_SIZE     9UL
-#define MAX_ISA_ADDR    0x03ff
-#define MIN_EISA_ADDR   0x1c88
-#define MAX_EISA_ADDR   0xfc88
-#define BSY_ASSERTED      0x80
-#define DRQ_ASSERTED      0x08
-#define ABSY_ASSERTED     0x01
-#define IRQ_ASSERTED      0x02
-#define READ_CONFIG_PIO   0xf0
-#define SET_CONFIG_PIO    0xf1
-#define SEND_CP_PIO       0xf2
-#define RECEIVE_SP_PIO    0xf3
-#define TRUNCATE_XFR_PIO  0xf4
-#define RESET_PIO         0xf9
-#define READ_CONFIG_DMA   0xfd
-#define SET_CONFIG_DMA    0xfe
-#define SEND_CP_DMA       0xff
-#define ASOK              0x00
-#define ASST              0x01
-
-#define YESNO(a) ((a) ? 'y' : 'n')
-#define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
-
-/* "EATA", in Big Endian format */
-#define EATA_SIG_BE 0x45415441
-
-/* Number of valid bytes in the board config structure for EATA 2.0x */
-#define EATA_2_0A_SIZE 28
-#define EATA_2_0B_SIZE 30
-#define EATA_2_0C_SIZE 34
-
-/* Board info structure */
-struct eata_info {
-	u_int32_t data_len;	/* Number of valid bytes after this field */
-	u_int32_t sign;		/* ASCII "EATA" signature */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar version	: 4,
-	       		: 4;
-	unchar haaval	: 1,
-	       ata	: 1,
-	       drqvld	: 1,
-	       dmasup	: 1,
-	       morsup	: 1,
-	       trnxfr	: 1,
-	       tarsup	: 1,
-	       ocsena	: 1;
-#else
-	unchar		: 4,	/* unused low nibble */
-	 	version	: 4;	/* EATA version, should be 0x1 */
-	unchar ocsena	: 1,	/* Overlap Command Support Enabled */
-	       tarsup	: 1,	/* Target Mode Supported */
-	       trnxfr	: 1,	/* Truncate Transfer Cmd NOT Necessary */
-	       morsup	: 1,	/* More Supported */
-	       dmasup	: 1,	/* DMA Supported */
-	       drqvld	: 1,	/* DRQ Index (DRQX) is valid */
-	       ata	: 1,	/* This is an ATA device */
-	       haaval	: 1;	/* Host Adapter Address Valid */
-#endif
-
-	ushort cp_pad_len;	/* Number of pad bytes after cp_len */
-	unchar host_addr[4];	/* Host Adapter SCSI ID for channels 3, 2, 1, 0 */
-	u_int32_t cp_len;	/* Number of valid bytes in cp */
-	u_int32_t sp_len;	/* Number of valid bytes in sp */
-	ushort queue_size;	/* Max number of cp that can be queued */
-	ushort unused;
-	ushort scatt_size;	/* Max number of entries in scatter/gather table */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar drqx	: 2,
-	       second	: 1,
-	       irq_tr	: 1,
-	       irq	: 4;
-	unchar sync;
-	unchar		: 4,
-	       res1	: 1,
-	       large_sg	: 1,
-	       forcaddr	: 1,
-	       isaena	: 1;
-	unchar max_chan	: 3,
-	       max_id	: 5;
-	unchar max_lun;
-	unchar eisa	: 1,
-	       pci	: 1,
-	       idquest	: 1,
-	       m1	: 1,
-	       		: 4;
-#else
-	unchar irq	: 4,	/* Interrupt Request assigned to this controller */
-	       irq_tr	: 1,	/* 0 for edge triggered, 1 for level triggered */
-	       second	: 1,	/* 1 if this is a secondary (not primary) controller */
-	       drqx	: 2;	/* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */
-	unchar sync;		/* 1 if scsi target id 7...0 is running sync scsi */
-
-	/* Structure extension defined in EATA 2.0B */
-	unchar isaena	: 1,	/* ISA i/o addressing is disabled/enabled */
-	       forcaddr	: 1,	/* Port address has been forced */
-	       large_sg	: 1,	/* 1 if large SG lists are supported */
-	       res1	: 1,
-	       		: 4;
-	unchar max_id	: 5,	/* Max SCSI target ID number */
-	       max_chan	: 3;	/* Max SCSI channel number on this board */
-
-	/* Structure extension defined in EATA 2.0C */
-	unchar max_lun;		/* Max SCSI LUN number */
-	unchar
-			: 4,
-	       m1	: 1,	/* This is a PCI with an M1 chip installed */
-	       idquest	: 1,	/* RAIDNUM returned is questionable */
-	       pci	: 1,	/* This board is PCI */
-	       eisa	: 1;	/* This board is EISA */
-#endif
-
-	unchar raidnum;		/* Uniquely identifies this HBA in a system */
-	unchar notused;
-
-	ushort ipad[247];
-};
-
-/* Board config structure */
-struct eata_config {
-	ushort len;		/* Number of bytes following this field */
-
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar		: 4,
-	       tarena	: 1,
-	       mdpena	: 1,
-	       ocena	: 1,
-	       edis	: 1;
-#else
-	unchar edis	: 1,	/* Disable EATA interface after config command */
-	       ocena	: 1,	/* Overlapped Commands Enabled */
-	       mdpena	: 1,	/* Transfer all Modified Data Pointer Messages */
-	       tarena	: 1,	/* Target Mode Enabled for this controller */
-	       		: 4;
-#endif
-	unchar cpad[511];
-};
-
-/* Returned status packet structure */
-struct mssp {
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar eoc	: 1,
-	       adapter_status : 7;
-#else
-	unchar adapter_status : 7,	/* State related to current command */
-	       eoc	: 1;		/* End Of Command (1 = command completed) */
-#endif
-	unchar target_status;	/* SCSI status received after data transfer */
-	unchar unused[2];
-	u_int32_t inv_res_len;	/* Number of bytes not transferred */
-	u_int32_t cpp_index;	/* Index of address set in cp */
-	char mess[12];
-};
-
-struct sg_list {
-	unsigned int address;	/* Segment Address */
-	unsigned int num_bytes;	/* Segment Length */
-};
-
-/* MailBox SCSI Command Packet */
-struct mscp {
-#if defined(__BIG_ENDIAN_BITFIELD)
-	unchar din	: 1,
-	       dout	: 1,
-	       interp	: 1,
-	       		: 1,
-		sg	: 1,
-		reqsen	:1,
-		init	: 1,
-		sreset	: 1;
-	unchar sense_len;
-	unchar unused[3];
-	unchar		: 7,
-	       fwnest	: 1;
-	unchar		: 5,
-	       hbaci	: 1,
-	       iat	: 1,
-	       phsunit	: 1;
-	unchar channel	: 3,
-	       target	: 5;
-	unchar one	: 1,
-	       dispri	: 1,
-	       luntar	: 1,
-	       lun	: 5;
-#else
-	unchar sreset	:1,	/* SCSI Bus Reset Signal should be asserted */
-	       init	:1,	/* Re-initialize controller and self test */
-	       reqsen	:1,	/* Transfer Request Sense Data to addr using DMA */
-	       sg	:1,	/* Use Scatter/Gather */
-	       		:1,
-	       interp	:1,	/* The controller interprets cp, not the target */
-	       dout	:1,	/* Direction of Transfer is Out (Host to Target) */
-	       din	:1;	/* Direction of Transfer is In (Target to Host) */
-	unchar sense_len;	/* Request Sense Length */
-	unchar unused[3];
-	unchar fwnest	: 1,	/* Send command to a component of an Array Group */
-			: 7;
-	unchar phsunit	: 1,	/* Send to Target Physical Unit (bypass RAID) */
-	       iat	: 1,	/* Inhibit Address Translation */
-	       hbaci	: 1,	/* Inhibit HBA Caching for this command */
-	       		: 5;
-	unchar target	: 5,	/* SCSI target ID */
-	       channel	: 3;	/* SCSI channel number */
-	unchar lun	: 5,	/* SCSI logical unit number */
-	       luntar	: 1,	/* This cp is for Target (not LUN) */
-	       dispri	: 1,	/* Disconnect Privilege granted */
-	       one	: 1;	/* 1 */
-#endif
-
-	unchar mess[3];		/* Massage to/from Target */
-	unchar cdb[12];		/* Command Descriptor Block */
-	u_int32_t data_len;	/* If sg=0 Data Length, if sg=1 sglist length */
-	u_int32_t cpp_index;	/* Index of address to be returned in sp */
-	u_int32_t data_address;	/* If sg=0 Data Address, if sg=1 sglist address */
-	u_int32_t sp_dma_addr;	/* Address where sp is DMA'ed when cp completes */
-	u_int32_t sense_addr;	/* Address where Sense Data is DMA'ed on error */
-
-	/* Additional fields begin here. */
-	struct scsi_cmnd *SCpnt;
-
-	/* All the cp structure is zero filled by queuecommand except the
-	   following CP_TAIL_SIZE bytes, initialized by detect */
-	dma_addr_t cp_dma_addr;	/* dma handle for this cp structure */
-	struct sg_list *sglist;	/* pointer to the allocated SG list */
-};
-
-#define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t))
-
-struct hostdata {
-	struct mscp cp[MAX_MAILBOXES];	/* Mailboxes for this board */
-	unsigned int cp_stat[MAX_MAILBOXES];	/* FREE, IN_USE, LOCKED, IN_RESET */
-	unsigned int last_cp_used;	/* Index of last mailbox used */
-	unsigned int iocount;	/* Total i/o done for this board */
-	int board_number;	/* Number of this board */
-	char board_name[16];	/* Name of this board */
-	int in_reset;		/* True if board is doing a reset */
-	int target_to[MAX_TARGET][MAX_CHANNEL];	/* N. of timeout errors on target */
-	int target_redo[MAX_TARGET][MAX_CHANNEL];	/* If 1 redo i/o on target */
-	unsigned int retries;	/* Number of internal retries */
-	unsigned long last_retried_pid;	/* Pid of last retried command */
-	unsigned char subversion;	/* Bus type, either ISA or EISA/PCI */
-	unsigned char protocol_rev;	/* EATA 2.0 rev., 'A' or 'B' or 'C' */
-	unsigned char is_pci;	/* 1 is bus type is PCI */
-	struct pci_dev *pdev;	/* pdev for PCI bus, NULL otherwise */
-	struct mssp *sp_cpu_addr;	/* cpu addr for DMA buffer sp */
-	dma_addr_t sp_dma_addr;	/* dma handle for DMA buffer sp */
-	struct mssp sp;		/* Local copy of sp buffer */
-};
-
-static struct Scsi_Host *sh[MAX_BOARDS];
-static const char *driver_name = "EATA";
-static char sha[MAX_BOARDS];
-
-/* Initialize num_boards so that ihdlr can work while detect is in progress */
-static unsigned int num_boards = MAX_BOARDS;
-
-static unsigned long io_port[] = {
-
-	/* Space for MAX_INT_PARAM ports usable while loading as a module */
-	SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
-	SKIP, SKIP,
-
-	/* First ISA */
-	0x1f0,
-
-	/* Space for MAX_PCI ports possibly reported by PCI_BIOS */
-	SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
-	SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
-
-	/* MAX_EISA ports */
-	0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88,
-	0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88,
-
-	/* Other (MAX_ISA - 1) ports */
-	0x170, 0x230, 0x330,
-
-	/* End of list */
-	0x0
-};
-
-/* Device is Big Endian */
-#define H2DEV(x)   cpu_to_be32(x)
-#define DEV2H(x)   be32_to_cpu(x)
-#define H2DEV16(x) cpu_to_be16(x)
-#define DEV2H16(x) be16_to_cpu(x)
-
-/* But transfer orientation from the 16 bit data register is Little Endian */
-#define REG2H(x)   le16_to_cpu(x)
-
-static irqreturn_t do_interrupt_handler(int, void *);
-static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *,
-		      unsigned int);
-static int do_trace = 0;
-static int setup_done = 0;
-static int link_statistics;
-static int ext_tran = 0;
-static int rev_scan = 1;
-
-#if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE)
-static int tag_mode = TAG_SIMPLE;
-#else
-static int tag_mode = TAG_DISABLED;
-#endif
-
-#if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS)
-static int linked_comm = 1;
-#else
-static int linked_comm = 0;
-#endif
-
-#if defined(CONFIG_SCSI_EATA_MAX_TAGS)
-static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS;
-#else
-static int max_queue_depth = MAX_CMD_PER_LUN;
-#endif
-
-#if defined(CONFIG_ISA)
-static int isa_probe = 1;
-#else
-static int isa_probe = 0;
-#endif
-
-#if defined(CONFIG_EISA)
-static int eisa_probe = 1;
-#else
-static int eisa_probe = 0;
-#endif
-
-#if defined(CONFIG_PCI)
-static int pci_probe = 1;
-#else
-static int pci_probe = 0;
-#endif
-
-#define MAX_INT_PARAM 10
-#define MAX_BOOT_OPTIONS_SIZE 256
-static char boot_options[MAX_BOOT_OPTIONS_SIZE];
-
-#if defined(MODULE)
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-
-module_param_string(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0);
-MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option."
-		 "            Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\"");
-MODULE_AUTHOR("Dario Ballabio");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("EATA/DMA SCSI Driver");
-
-#endif
-
-static int eata2x_slave_configure(struct scsi_device *dev)
-{
-	int tqd, utqd;
-	char *tag_suffix, *link_suffix;
-
-	utqd = MAX_CMD_PER_LUN;
-	tqd = max_queue_depth;
-
-	if (TLDEV(dev->type) && dev->tagged_supported) {
-		if (tag_mode == TAG_SIMPLE) {
-			tag_suffix = ", simple tags";
-		} else if (tag_mode == TAG_ORDERED) {
-			tag_suffix = ", ordered tags";
-		} else {
-			tag_suffix = ", no tags";
-		}
-		scsi_change_queue_depth(dev, tqd);
-	} else if (TLDEV(dev->type) && linked_comm) {
-		scsi_change_queue_depth(dev, tqd);
-		tag_suffix = ", untagged";
-	} else {
-		scsi_change_queue_depth(dev, utqd);
-		tag_suffix = "";
-	}
-
-	if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2)
-		link_suffix = ", sorted";
-	else if (TLDEV(dev->type))
-		link_suffix = ", unsorted";
-	else
-		link_suffix = "";
-
-	sdev_printk(KERN_INFO, dev,
-		"cmds/lun %d%s%s.\n",
-	       dev->queue_depth, link_suffix, tag_suffix);
-
-	return 0;
-}
-
-static int wait_on_busy(unsigned long iobase, unsigned int loop)
-{
-	while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) {
-		udelay(1L);
-		if (--loop == 0)
-			return 1;
-	}
-	return 0;
-}
-
-static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd)
-{
-	unsigned char *byaddr;
-	unsigned long devaddr;
-
-	if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP)))
-		return 1;
-
-	if (addr) {
-		devaddr = H2DEV(addr);
-		byaddr = (unsigned char *)&devaddr;
-		outb(byaddr[3], iobase + REG_LOW);
-		outb(byaddr[2], iobase + REG_LM);
-		outb(byaddr[1], iobase + REG_MID);
-		outb(byaddr[0], iobase + REG_MSB);
-	}
-
-	outb(cmd, iobase + REG_CMD);
-	return 0;
-}
-
-static int read_pio(unsigned long iobase, ushort * start, ushort * end)
-{
-	unsigned int loop = MAXLOOP;
-	ushort *p;
-
-	for (p = start; p <= end; p++) {
-		while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) {
-			udelay(1L);
-			if (--loop == 0)
-				return 1;
-		}
-		loop = MAXLOOP;
-		*p = REG2H(inw(iobase));
-	}
-
-	return 0;
-}
-
-static struct pci_dev *get_pci_dev(unsigned long port_base)
-{
-#if defined(CONFIG_PCI)
-	unsigned int addr;
-	struct pci_dev *dev = NULL;
-
-	while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
-		addr = pci_resource_start(dev, 0);
-
-#if defined(DEBUG_PCI_DETECT)
-		printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n",
-		       driver_name, dev->bus->number, dev->devfn, addr);
-#endif
-
-		/* we are in so much trouble for a pci hotplug system with this driver
-		 * anyway, so doing this at least lets people unload the driver and not
-		 * cause memory problems, but in general this is a bad thing to do (this
-		 * driver needs to be converted to the proper PCI api someday... */
-		pci_dev_put(dev);
-		if (addr + PCI_BASE_ADDRESS_0 == port_base)
-			return dev;
-	}
-#endif				/* end CONFIG_PCI */
-	return NULL;
-}
-
-static void enable_pci_ports(void)
-{
-#if defined(CONFIG_PCI)
-	struct pci_dev *dev = NULL;
-
-	while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) {
-#if defined(DEBUG_PCI_DETECT)
-		printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n",
-		       driver_name, dev->bus->number, dev->devfn);
-#endif
-
-		if (pci_enable_device(dev))
-			printk
-			    ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n",
-			     driver_name, dev->bus->number, dev->devfn);
-	}
-
-#endif				/* end CONFIG_PCI */
-}
-
-static int port_detect(unsigned long port_base, unsigned int j,
-		struct scsi_host_template *tpnt)
-{
-	unsigned char irq, dma_channel, subversion, i, is_pci = 0;
-	unsigned char protocol_rev;
-	struct eata_info info;
-	char *bus_type, dma_name[16];
-	struct pci_dev *pdev;
-	/* Allowed DMA channels for ISA (0 indicates reserved) */
-	unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
-	struct Scsi_Host *shost;
-	struct hostdata *ha;
-	char name[16];
-
-	sprintf(name, "%s%d", driver_name, j);
-
-	if (!request_region(port_base, REGION_SIZE, driver_name)) {
-#if defined(DEBUG_DETECT)
-		printk("%s: address 0x%03lx in use, skipping probe.\n", name,
-		       port_base);
-#endif
-		goto fail;
-	}
-
-	if (do_dma(port_base, 0, READ_CONFIG_PIO)) {
-#if defined(DEBUG_DETECT)
-		printk("%s: detect, do_dma failed at 0x%03lx.\n", name,
-		       port_base);
-#endif
-		goto freelock;
-	}
-
-	/* Read the info structure */
-	if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) {
-#if defined(DEBUG_DETECT)
-		printk("%s: detect, read_pio failed at 0x%03lx.\n", name,
-		       port_base);
-#endif
-		goto freelock;
-	}
-
-	info.data_len = DEV2H(info.data_len);
-	info.sign = DEV2H(info.sign);
-	info.cp_pad_len = DEV2H16(info.cp_pad_len);
-	info.cp_len = DEV2H(info.cp_len);
-	info.sp_len = DEV2H(info.sp_len);
-	info.scatt_size = DEV2H16(info.scatt_size);
-	info.queue_size = DEV2H16(info.queue_size);
-
-	/* Check the controller "EATA" signature */
-	if (info.sign != EATA_SIG_BE) {
-#if defined(DEBUG_DETECT)
-		printk("%s: signature 0x%04x discarded.\n", name, info.sign);
-#endif
-		goto freelock;
-	}
-
-	if (info.data_len < EATA_2_0A_SIZE) {
-		printk
-		    ("%s: config structure size (%d bytes) too short, detaching.\n",
-		     name, info.data_len);
-		goto freelock;
-	} else if (info.data_len == EATA_2_0A_SIZE)
-		protocol_rev = 'A';
-	else if (info.data_len == EATA_2_0B_SIZE)
-		protocol_rev = 'B';
-	else
-		protocol_rev = 'C';
-
-	if (protocol_rev != 'A' && info.forcaddr) {
-		printk("%s: warning, port address has been forced.\n", name);
-		bus_type = "PCI";
-		is_pci = 1;
-		subversion = ESA;
-	} else if (port_base > MAX_EISA_ADDR
-		   || (protocol_rev == 'C' && info.pci)) {
-		bus_type = "PCI";
-		is_pci = 1;
-		subversion = ESA;
-	} else if (port_base >= MIN_EISA_ADDR
-		   || (protocol_rev == 'C' && info.eisa)) {
-		bus_type = "EISA";
-		subversion = ESA;
-	} else if (protocol_rev == 'C' && !info.eisa && !info.pci) {
-		bus_type = "ISA";
-		subversion = ISA;
-	} else if (port_base > MAX_ISA_ADDR) {
-		bus_type = "PCI";
-		is_pci = 1;
-		subversion = ESA;
-	} else {
-		bus_type = "ISA";
-		subversion = ISA;
-	}
-
-	if (!info.haaval || info.ata) {
-		printk
-		    ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n",
-		     name, port_base, bus_type, info.haaval, info.ata);
-		goto freelock;
-	}
-
-	if (info.drqvld) {
-		if (subversion == ESA)
-			printk("%s: warning, weird %s board using DMA.\n", name,
-			       bus_type);
-
-		subversion = ISA;
-		dma_channel = dma_channel_table[3 - info.drqx];
-	} else {
-		if (subversion == ISA)
-			printk("%s: warning, weird %s board not using DMA.\n",
-			       name, bus_type);
-
-		subversion = ESA;
-		dma_channel = NO_DMA;
-	}
-
-	if (!info.dmasup)
-		printk("%s: warning, DMA protocol support not asserted.\n",
-		       name);
-
-	irq = info.irq;
-
-	if (subversion == ESA && !info.irq_tr)
-		printk
-		    ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n",
-		     name, irq);
-
-	if (is_pci) {
-		pdev = get_pci_dev(port_base);
-		if (!pdev)
-			printk
-			    ("%s: warning, failed to get pci_dev structure.\n",
-			     name);
-	} else
-		pdev = NULL;
-
-	if (pdev && (irq != pdev->irq)) {
-		printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq,
-		       pdev->irq);
-		irq = pdev->irq;
-	}
-
-	/* Board detected, allocate its IRQ */
-	if (request_irq(irq, do_interrupt_handler,
-			(subversion == ESA) ? IRQF_SHARED : 0,
-			driver_name, (void *)&sha[j])) {
-		printk("%s: unable to allocate IRQ %u, detaching.\n", name,
-		       irq);
-		goto freelock;
-	}
-
-	if (subversion == ISA && request_dma(dma_channel, driver_name)) {
-		printk("%s: unable to allocate DMA channel %u, detaching.\n",
-		       name, dma_channel);
-		goto freeirq;
-	}
-#if defined(FORCE_CONFIG)
-	{
-		struct eata_config *cf;
-		dma_addr_t cf_dma_addr;
-
-		cf = pci_zalloc_consistent(pdev, sizeof(struct eata_config),
-					   &cf_dma_addr);
-
-		if (!cf) {
-			printk
-			    ("%s: config, pci_alloc_consistent failed, detaching.\n",
-			     name);
-			goto freedma;
-		}
-
-		/* Set board configuration */
-		cf->len = (ushort) H2DEV16((ushort) 510);
-		cf->ocena = 1;
-
-		if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) {
-			printk
-			    ("%s: busy timeout sending configuration, detaching.\n",
-			     name);
-			pci_free_consistent(pdev, sizeof(struct eata_config),
-					    cf, cf_dma_addr);
-			goto freedma;
-		}
-
-	}
-#endif
-
-	sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata));
-	if (shost == NULL) {
-		printk("%s: unable to register host, detaching.\n", name);
-		goto freedma;
-	}
-
-	shost->io_port = port_base;
-	shost->unique_id = port_base;
-	shost->n_io_port = REGION_SIZE;
-	shost->dma_channel = dma_channel;
-	shost->irq = irq;
-	shost->sg_tablesize = (ushort) info.scatt_size;
-	shost->this_id = (ushort) info.host_addr[3];
-	shost->can_queue = (ushort) info.queue_size;
-	shost->cmd_per_lun = MAX_CMD_PER_LUN;
-
-	ha = (struct hostdata *)shost->hostdata;
-	
-	memset(ha, 0, sizeof(struct hostdata));
-	ha->subversion = subversion;
-	ha->protocol_rev = protocol_rev;
-	ha->is_pci = is_pci;
-	ha->pdev = pdev;
-	ha->board_number = j;
-
-	if (ha->subversion == ESA)
-		shost->unchecked_isa_dma = 0;
-	else {
-		unsigned long flags;
-		shost->unchecked_isa_dma = 1;
-
-		flags = claim_dma_lock();
-		disable_dma(dma_channel);
-		clear_dma_ff(dma_channel);
-		set_dma_mode(dma_channel, DMA_MODE_CASCADE);
-		enable_dma(dma_channel);
-		release_dma_lock(flags);
-
-	}
-
-	strcpy(ha->board_name, name);
-
-	/* DPT PM2012 does not allow to detect sg_tablesize correctly */
-	if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) {
-		printk("%s: detect, wrong n. of SG lists %d, fixed.\n",
-		       ha->board_name, shost->sg_tablesize);
-		shost->sg_tablesize = MAX_SGLIST;
-	}
-
-	/* DPT PM2012 does not allow to detect can_queue correctly */
-	if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) {
-		printk("%s: detect, wrong n. of mbox %d, fixed.\n",
-		       ha->board_name, shost->can_queue);
-		shost->can_queue = MAX_MAILBOXES;
-	}
-
-	if (protocol_rev != 'A') {
-		if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL)
-			shost->max_channel = info.max_chan;
-
-		if (info.max_id > 7 && info.max_id < MAX_TARGET)
-			shost->max_id = info.max_id + 1;
-
-		if (info.large_sg && shost->sg_tablesize == MAX_SGLIST)
-			shost->sg_tablesize = MAX_LARGE_SGLIST;
-	}
-
-	if (protocol_rev == 'C') {
-		if (info.max_lun > 7 && info.max_lun < MAX_LUN)
-			shost->max_lun = info.max_lun + 1;
-	}
-
-	if (dma_channel == NO_DMA)
-		sprintf(dma_name, "%s", "BMST");
-	else
-		sprintf(dma_name, "DMA %u", dma_channel);
-
-	for (i = 0; i < shost->can_queue; i++)
-		ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev,
-							  &ha->cp[i],
-							  sizeof(struct mscp),
-							  PCI_DMA_BIDIRECTIONAL);
-
-	for (i = 0; i < shost->can_queue; i++) {
-		size_t sz = shost->sg_tablesize *sizeof(struct sg_list);
-		gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC;
-		ha->cp[i].sglist = kmalloc(sz, gfp_mask);
-		if (!ha->cp[i].sglist) {
-			printk
-			    ("%s: kmalloc SGlist failed, mbox %d, detaching.\n",
-			     ha->board_name, i);
-			goto release;
-		}
-	}
-
-	if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev,
-							sizeof(struct mssp),
-							&ha->sp_dma_addr))) {
-		printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name);
-		goto release;
-	}
-
-	if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
-		max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
-
-	if (max_queue_depth < MAX_CMD_PER_LUN)
-		max_queue_depth = MAX_CMD_PER_LUN;
-
-	if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
-		tag_mode = TAG_ORDERED;
-
-	if (j == 0) {
-		printk
-		    ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n");
-		printk
-		    ("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, "
-		     "ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode,
-		     YESNO(linked_comm), max_queue_depth, YESNO(rev_scan),
-		     YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe),
-		     YESNO(pci_probe));
-	}
-
-	printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n",
-	       ha->board_name, ha->protocol_rev, bus_type,
-	       (unsigned long)shost->io_port, shost->irq, dma_name,
-	       shost->sg_tablesize, shost->can_queue);
-
-	if (shost->max_id > 8 || shost->max_lun > 8)
-		printk
-		    ("%s: wide SCSI support enabled, max_id %u, max_lun %llu.\n",
-		     ha->board_name, shost->max_id, shost->max_lun);
-
-	for (i = 0; i <= shost->max_channel; i++)
-		printk("%s: SCSI channel %u enabled, host target ID %d.\n",
-		       ha->board_name, i, info.host_addr[3 - i]);
-
-#if defined(DEBUG_DETECT)
-	printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, "
-	       "sec. %u, infol %d, cpl %d spl %d.\n", name, info.version,
-	       info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync,
-	       info.second, info.data_len, info.cp_len, info.sp_len);
-
-	if (protocol_rev == 'B' || protocol_rev == 'C')
-		printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, "
-		       "large_sg %u, res1 %u.\n", name, info.isaena,
-		       info.forcaddr, info.max_id, info.max_chan, info.large_sg,
-		       info.res1);
-
-	if (protocol_rev == 'C')
-		printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, "
-		       "raidnum %u.\n", name, info.max_lun, info.m1,
-		       info.idquest, info.pci, info.eisa, info.raidnum);
-#endif
-
-	if (ha->pdev) {
-		pci_set_master(ha->pdev);
-		if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)))
-			printk("%s: warning, pci_set_dma_mask failed.\n",
-			       ha->board_name);
-	}
-
-	return 1;
-
-      freedma:
-	if (subversion == ISA)
-		free_dma(dma_channel);
-      freeirq:
-	free_irq(irq, &sha[j]);
-      freelock:
-	release_region(port_base, REGION_SIZE);
-      fail:
-	return 0;
-
-      release:
-	eata2x_release(shost);
-	return 0;
-}
-
-static void internal_setup(char *str, int *ints)
-{
-	int i, argc = ints[0];
-	char *cur = str, *pc;
-
-	if (argc > 0) {
-		if (argc > MAX_INT_PARAM)
-			argc = MAX_INT_PARAM;
-
-		for (i = 0; i < argc; i++)
-			io_port[i] = ints[i + 1];
-
-		io_port[i] = 0;
-		setup_done = 1;
-	}
-
-	while (cur && (pc = strchr(cur, ':'))) {
-		int val = 0, c = *++pc;
-
-		if (c == 'n' || c == 'N')
-			val = 0;
-		else if (c == 'y' || c == 'Y')
-			val = 1;
-		else
-			val = (int)simple_strtoul(pc, NULL, 0);
-
-		if (!strncmp(cur, "lc:", 3))
-			linked_comm = val;
-		else if (!strncmp(cur, "tm:", 3))
-			tag_mode = val;
-		else if (!strncmp(cur, "tc:", 3))
-			tag_mode = val;
-		else if (!strncmp(cur, "mq:", 3))
-			max_queue_depth = val;
-		else if (!strncmp(cur, "ls:", 3))
-			link_statistics = val;
-		else if (!strncmp(cur, "et:", 3))
-			ext_tran = val;
-		else if (!strncmp(cur, "rs:", 3))
-			rev_scan = val;
-		else if (!strncmp(cur, "ip:", 3))
-			isa_probe = val;
-		else if (!strncmp(cur, "ep:", 3))
-			eisa_probe = val;
-		else if (!strncmp(cur, "pp:", 3))
-			pci_probe = val;
-
-		if ((cur = strchr(cur, ',')))
-			++cur;
-	}
-
-	return;
-}
-
-static int option_setup(char *str)
-{
-	int ints[MAX_INT_PARAM];
-	char *cur = str;
-	int i = 1;
-
-	while (cur && isdigit(*cur) && i < MAX_INT_PARAM) {
-		ints[i++] = simple_strtoul(cur, NULL, 0);
-
-		if ((cur = strchr(cur, ',')) != NULL)
-			cur++;
-	}
-
-	ints[0] = i - 1;
-	internal_setup(cur, ints);
-	return 1;
-}
-
-static void add_pci_ports(void)
-{
-#if defined(CONFIG_PCI)
-	unsigned int addr, k;
-	struct pci_dev *dev = NULL;
-
-	for (k = 0; k < MAX_PCI; k++) {
-
-		if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev)))
-			break;
-
-		if (pci_enable_device(dev)) {
-#if defined(DEBUG_PCI_DETECT)
-			printk
-			    ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n",
-			     driver_name, dev->bus->number, dev->devfn);
-#endif
-
-			continue;
-		}
-
-		addr = pci_resource_start(dev, 0);
-
-#if defined(DEBUG_PCI_DETECT)
-		printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n",
-		       driver_name, k, dev->bus->number, dev->devfn, addr);
-#endif
-
-		/* Order addresses according to rev_scan value */
-		io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] =
-		    addr + PCI_BASE_ADDRESS_0;
-	}
-
-	pci_dev_put(dev);
-#endif				/* end CONFIG_PCI */
-}
-
-static int eata2x_detect(struct scsi_host_template *tpnt)
-{
-	unsigned int j = 0, k;
-
-	tpnt->proc_name = "eata2x";
-
-	if (strlen(boot_options))
-		option_setup(boot_options);
-
-#if defined(MODULE)
-	/* io_port could have been modified when loading as a module */
-	if (io_port[0] != SKIP) {
-		setup_done = 1;
-		io_port[MAX_INT_PARAM] = 0;
-	}
-#endif
-
-	for (k = MAX_INT_PARAM; io_port[k]; k++)
-		if (io_port[k] == SKIP)
-			continue;
-		else if (io_port[k] <= MAX_ISA_ADDR) {
-			if (!isa_probe)
-				io_port[k] = SKIP;
-		} else if (io_port[k] >= MIN_EISA_ADDR
-			   && io_port[k] <= MAX_EISA_ADDR) {
-			if (!eisa_probe)
-				io_port[k] = SKIP;
-		}
-
-	if (pci_probe) {
-		if (!setup_done)
-			add_pci_ports();
-		else
-			enable_pci_ports();
-	}
-
-	for (k = 0; io_port[k]; k++) {
-
-		if (io_port[k] == SKIP)
-			continue;
-
-		if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt))
-			j++;
-	}
-
-	num_boards = j;
-	return j;
-}
-
-static void map_dma(unsigned int i, struct hostdata *ha)
-{
-	unsigned int k, pci_dir;
-	int count;
-	struct scatterlist *sg;
-	struct mscp *cpp;
-	struct scsi_cmnd *SCpnt;
-
-	cpp = &ha->cp[i];
-	SCpnt = cpp->SCpnt;
-	pci_dir = SCpnt->sc_data_direction;
-
-	if (SCpnt->sense_buffer)
-		cpp->sense_addr =
-		    H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer,
-			   SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
-
-	cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
-
-	if (!scsi_sg_count(SCpnt)) {
-		cpp->data_len = 0;
-		return;
-	}
-
-	count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
-			   pci_dir);
-	BUG_ON(!count);
-
-	scsi_for_each_sg(SCpnt, sg, count, k) {
-		cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
-		cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
-	}
-
-	cpp->sg = 1;
-	cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist,
-						 scsi_sg_count(SCpnt) *
-						 sizeof(struct sg_list),
-						 pci_dir));
-	cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list)));
-}
-
-static void unmap_dma(unsigned int i, struct hostdata *ha)
-{
-	unsigned int pci_dir;
-	struct mscp *cpp;
-	struct scsi_cmnd *SCpnt;
-
-	cpp = &ha->cp[i];
-	SCpnt = cpp->SCpnt;
-	pci_dir = SCpnt->sc_data_direction;
-
-	if (DEV2H(cpp->sense_addr))
-		pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr),
-				 DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
-
-	if (scsi_sg_count(SCpnt))
-		pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt),
-			     pci_dir);
-
-	if (!DEV2H(cpp->data_len))
-		pci_dir = PCI_DMA_BIDIRECTIONAL;
-
-	if (DEV2H(cpp->data_address))
-		pci_unmap_single(ha->pdev, DEV2H(cpp->data_address),
-				 DEV2H(cpp->data_len), pci_dir);
-}
-
-static void sync_dma(unsigned int i, struct hostdata *ha)
-{
-	unsigned int pci_dir;
-	struct mscp *cpp;
-	struct scsi_cmnd *SCpnt;
-
-	cpp = &ha->cp[i];
-	SCpnt = cpp->SCpnt;
-	pci_dir = SCpnt->sc_data_direction;
-
-	if (DEV2H(cpp->sense_addr))
-		pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr),
-					    DEV2H(cpp->sense_len),
-					    PCI_DMA_FROMDEVICE);
-
-	if (scsi_sg_count(SCpnt))
-		pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt),
-					scsi_sg_count(SCpnt), pci_dir);
-
-	if (!DEV2H(cpp->data_len))
-		pci_dir = PCI_DMA_BIDIRECTIONAL;
-
-	if (DEV2H(cpp->data_address))
-		pci_dma_sync_single_for_cpu(ha->pdev,
-					    DEV2H(cpp->data_address),
-					    DEV2H(cpp->data_len), pci_dir);
-}
-
-static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha)
-{
-	unsigned int k;
-
-	static const unsigned char data_out_cmds[] = {
-		0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
-		0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
-		0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d
-	};
-
-	static const unsigned char data_none_cmds[] = {
-		0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
-		0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
-		0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00
-	};
-
-	struct mscp *cpp;
-	struct scsi_cmnd *SCpnt;
-
-	cpp = &ha->cp[i];
-	SCpnt = cpp->SCpnt;
-
-	if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
-		cpp->din = 1;
-		cpp->dout = 0;
-		return;
-	} else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
-		cpp->din = 0;
-		cpp->dout = 1;
-		return;
-	} else if (SCpnt->sc_data_direction == DMA_NONE) {
-		cpp->din = 0;
-		cpp->dout = 0;
-		return;
-	}
-
-	if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
-		panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n",
-				ha->board_name);
-
-	for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
-		if (SCpnt->cmnd[0] == data_out_cmds[k]) {
-			cpp->dout = 1;
-			break;
-		}
-
-	if ((cpp->din = !cpp->dout))
-		for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
-			if (SCpnt->cmnd[0] == data_none_cmds[k]) {
-				cpp->din = 0;
-				break;
-			}
-
-}
-
-static int eata2x_queuecommand_lck(struct scsi_cmnd *SCpnt,
-			       void (*done) (struct scsi_cmnd *))
-{
-	struct Scsi_Host *shost = SCpnt->device->host;
-	struct hostdata *ha = (struct hostdata *)shost->hostdata;
-	unsigned int i, k;
-	struct mscp *cpp;
-
-	if (SCpnt->host_scribble)
-		panic("%s: qcomm, SCpnt %p already active.\n",
-		      ha->board_name, SCpnt);
-
-	/* i is the mailbox number, look for the first free mailbox
-	   starting from last_cp_used */
-	i = ha->last_cp_used + 1;
-
-	for (k = 0; k < shost->can_queue; k++, i++) {
-		if (i >= shost->can_queue)
-			i = 0;
-		if (ha->cp_stat[i] == FREE) {
-			ha->last_cp_used = i;
-			break;
-		}
-	}
-
-	if (k == shost->can_queue) {
-		printk("%s: qcomm, no free mailbox.\n", ha->board_name);
-		return 1;
-	}
-
-	/* Set pointer to control packet structure */
-	cpp = &ha->cp[i];
-
-	memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
-
-	/* Set pointer to status packet structure, Big Endian format */
-	cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr);
-
-	SCpnt->scsi_done = done;
-	cpp->cpp_index = i;
-	SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index;
-
-	if (do_trace)
-		scmd_printk(KERN_INFO, SCpnt,
-			"qcomm, mbox %d.\n", i);
-
-	cpp->reqsen = 1;
-	cpp->dispri = 1;
-#if 0
-	if (SCpnt->device->type == TYPE_TAPE)
-		cpp->hbaci = 1;
-#endif
-	cpp->one = 1;
-	cpp->channel = SCpnt->device->channel;
-	cpp->target = SCpnt->device->id;
-	cpp->lun = SCpnt->device->lun;
-	cpp->SCpnt = SCpnt;
-	memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
-
-	/* Use data transfer direction SCpnt->sc_data_direction */
-	scsi_to_dev_dir(i, ha);
-
-	/* Map DMA buffers and SG list */
-	map_dma(i, ha);
-
-	if (linked_comm && SCpnt->device->queue_depth > 2
-	    && TLDEV(SCpnt->device->type)) {
-		ha->cp_stat[i] = READY;
-		flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 0);
-		return 0;
-	}
-
-	/* Send control packet to the board */
-	if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
-		unmap_dma(i, ha);
-		SCpnt->host_scribble = NULL;
-		scmd_printk(KERN_INFO, SCpnt, "qcomm, adapter busy.\n");
-		return 1;
-	}
-
-	ha->cp_stat[i] = IN_USE;
-	return 0;
-}
-
-static DEF_SCSI_QCMD(eata2x_queuecommand)
-
-static int eata2x_eh_abort(struct scsi_cmnd *SCarg)
-{
-	struct Scsi_Host *shost = SCarg->device->host;
-	struct hostdata *ha = (struct hostdata *)shost->hostdata;
-	unsigned int i;
-
-	if (SCarg->host_scribble == NULL) {
-		scmd_printk(KERN_INFO, SCarg, "abort, cmd inactive.\n");
-		return SUCCESS;
-	}
-
-	i = *(unsigned int *)SCarg->host_scribble;
-	scmd_printk(KERN_WARNING, SCarg, "abort, mbox %d.\n", i);
-
-	if (i >= shost->can_queue)
-		panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name);
-
-	if (wait_on_busy(shost->io_port, MAXLOOP)) {
-		printk("%s: abort, timeout error.\n", ha->board_name);
-		return FAILED;
-	}
-
-	if (ha->cp_stat[i] == FREE) {
-		printk("%s: abort, mbox %d is free.\n", ha->board_name, i);
-		return SUCCESS;
-	}
-
-	if (ha->cp_stat[i] == IN_USE) {
-		printk("%s: abort, mbox %d is in use.\n", ha->board_name, i);
-
-		if (SCarg != ha->cp[i].SCpnt)
-			panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
-			      ha->board_name, i, SCarg, ha->cp[i].SCpnt);
-
-		if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)
-			printk("%s: abort, mbox %d, interrupt pending.\n",
-			       ha->board_name, i);
-
-		return FAILED;
-	}
-
-	if (ha->cp_stat[i] == IN_RESET) {
-		printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i);
-		return FAILED;
-	}
-
-	if (ha->cp_stat[i] == LOCKED) {
-		printk("%s: abort, mbox %d is locked.\n", ha->board_name, i);
-		return SUCCESS;
-	}
-
-	if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
-		unmap_dma(i, ha);
-		SCarg->result = DID_ABORT << 16;
-		SCarg->host_scribble = NULL;
-		ha->cp_stat[i] = FREE;
-		printk("%s, abort, mbox %d ready, DID_ABORT, done.\n",
-		       ha->board_name, i);
-		SCarg->scsi_done(SCarg);
-		return SUCCESS;
-	}
-
-	panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i);
-}
-
-static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg)
-{
-	unsigned int i, time, k, c, limit = 0;
-	struct scsi_cmnd *SCpnt;
-	struct Scsi_Host *shost = SCarg->device->host;
-	struct hostdata *ha = (struct hostdata *)shost->hostdata;
-
-	scmd_printk(KERN_INFO, SCarg, "reset, enter.\n");
-
-	spin_lock_irq(shost->host_lock);
-
-	if (SCarg->host_scribble == NULL)
-		printk("%s: reset, inactive.\n", ha->board_name);
-
-	if (ha->in_reset) {
-		printk("%s: reset, exit, already in reset.\n", ha->board_name);
-		spin_unlock_irq(shost->host_lock);
-		return FAILED;
-	}
-
-	if (wait_on_busy(shost->io_port, MAXLOOP)) {
-		printk("%s: reset, exit, timeout error.\n", ha->board_name);
-		spin_unlock_irq(shost->host_lock);
-		return FAILED;
-	}
-
-	ha->retries = 0;
-
-	for (c = 0; c <= shost->max_channel; c++)
-		for (k = 0; k < shost->max_id; k++) {
-			ha->target_redo[k][c] = 1;
-			ha->target_to[k][c] = 0;
-		}
-
-	for (i = 0; i < shost->can_queue; i++) {
-
-		if (ha->cp_stat[i] == FREE)
-			continue;
-
-		if (ha->cp_stat[i] == LOCKED) {
-			ha->cp_stat[i] = FREE;
-			printk("%s: reset, locked mbox %d forced free.\n",
-			       ha->board_name, i);
-			continue;
-		}
-
-		if (!(SCpnt = ha->cp[i].SCpnt))
-			panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
-
-		if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) {
-			ha->cp_stat[i] = ABORTING;
-			printk("%s: reset, mbox %d aborting.\n",
-			       ha->board_name, i);
-		}
-
-		else {
-			ha->cp_stat[i] = IN_RESET;
-			printk("%s: reset, mbox %d in reset.\n",
-			       ha->board_name, i);
-		}
-
-		if (SCpnt->host_scribble == NULL)
-			panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i);
-
-		if (*(unsigned int *)SCpnt->host_scribble != i)
-			panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i);
-
-		if (SCpnt->scsi_done == NULL)
-			panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n",
-			      ha->board_name, i);
-	}
-
-	if (do_dma(shost->io_port, 0, RESET_PIO)) {
-		printk("%s: reset, cannot reset, timeout error.\n", ha->board_name);
-		spin_unlock_irq(shost->host_lock);
-		return FAILED;
-	}
-
-	printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name);
-
-#if defined(DEBUG_RESET)
-	do_trace = 1;
-#endif
-
-	ha->in_reset = 1;
-
-	spin_unlock_irq(shost->host_lock);
-
-	/* FIXME: use a sleep instead */
-	time = jiffies;
-	while ((jiffies - time) < (10 * HZ) && limit++ < 200000)
-		udelay(100L);
-
-	spin_lock_irq(shost->host_lock);
-
-	printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit);
-
-	for (i = 0; i < shost->can_queue; i++) {
-
-		if (ha->cp_stat[i] == IN_RESET) {
-			SCpnt = ha->cp[i].SCpnt;
-			unmap_dma(i, ha);
-			SCpnt->result = DID_RESET << 16;
-			SCpnt->host_scribble = NULL;
-
-			/* This mailbox is still waiting for its interrupt */
-			ha->cp_stat[i] = LOCKED;
-
-			printk
-			    ("%s, reset, mbox %d locked, DID_RESET, done.\n",
-			     ha->board_name, i);
-		}
-
-		else if (ha->cp_stat[i] == ABORTING) {
-			SCpnt = ha->cp[i].SCpnt;
-			unmap_dma(i, ha);
-			SCpnt->result = DID_RESET << 16;
-			SCpnt->host_scribble = NULL;
-
-			/* This mailbox was never queued to the adapter */
-			ha->cp_stat[i] = FREE;
-
-			printk
-			    ("%s, reset, mbox %d aborting, DID_RESET, done.\n",
-			     ha->board_name, i);
-		}
-
-		else
-			/* Any other mailbox has already been set free by interrupt */
-			continue;
-
-		SCpnt->scsi_done(SCpnt);
-	}
-
-	ha->in_reset = 0;
-	do_trace = 0;
-
-	printk("%s: reset, exit.\n", ha->board_name);
-
-	spin_unlock_irq(shost->host_lock);
-	return SUCCESS;
-}
-
-int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev,
-		      sector_t capacity, int *dkinfo)
-{
-	unsigned int size = capacity;
-
-	if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
-		dkinfo[0] = 255;
-		dkinfo[1] = 63;
-		dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
-	}
-#if defined (DEBUG_GEOMETRY)
-	printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
-	       dkinfo[0], dkinfo[1], dkinfo[2]);
-#endif
-
-	return 0;
-}
-
-static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
-		 unsigned int rev)
-{
-	unsigned int i, j, k, y;
-	unsigned long x;
-
-	for (i = 0; i < n - 1; i++) {
-		k = i;
-
-		for (j = k + 1; j < n; j++)
-			if (rev) {
-				if (sk[j] > sk[k])
-					k = j;
-			} else {
-				if (sk[j] < sk[k])
-					k = j;
-			}
-
-		if (k != i) {
-			x = sk[k];
-			sk[k] = sk[i];
-			sk[i] = x;
-			y = da[k];
-			da[k] = da[i];
-			da[i] = y;
-		}
-	}
-
-	return;
-}
-
-static int reorder(struct hostdata *ha, unsigned long cursec,
-		   unsigned int ihdlr, unsigned int il[], unsigned int n_ready)
-{
-	struct scsi_cmnd *SCpnt;
-	struct mscp *cpp;
-	unsigned int k, n;
-	unsigned int rev = 0, s = 1, r = 1;
-	unsigned int input_only = 1, overlap = 0;
-	unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
-	unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
-	unsigned long ioseek = 0;
-
-	static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
-	static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
-	static unsigned int readysorted = 0, revcount = 0;
-	static unsigned long seeksorted = 0, seeknosort = 0;
-
-	if (link_statistics && !(++flushcount % link_statistics))
-		printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"
-		       " av %ldK as %ldK.\n", flushcount, batchcount,
-		       inputcount, ovlcount, readycount, readysorted, sortcount,
-		       revcount, seeknosort / (readycount + 1),
-		       seeksorted / (readycount + 1));
-
-	if (n_ready <= 1)
-		return 0;
-
-	for (n = 0; n < n_ready; n++) {
-		k = il[n];
-		cpp = &ha->cp[k];
-		SCpnt = cpp->SCpnt;
-
-		if (!cpp->din)
-			input_only = 0;
-
-		if (blk_rq_pos(SCpnt->request) < minsec)
-			minsec = blk_rq_pos(SCpnt->request);
-		if (blk_rq_pos(SCpnt->request) > maxsec)
-			maxsec = blk_rq_pos(SCpnt->request);
-
-		sl[n] = blk_rq_pos(SCpnt->request);
-		ioseek += blk_rq_sectors(SCpnt->request);
-
-		if (!n)
-			continue;
-
-		if (sl[n] < sl[n - 1])
-			s = 0;
-		if (sl[n] > sl[n - 1])
-			r = 0;
-
-		if (link_statistics) {
-			if (sl[n] > sl[n - 1])
-				seek += sl[n] - sl[n - 1];
-			else
-				seek += sl[n - 1] - sl[n];
-		}
-
-	}
-
-	if (link_statistics) {
-		if (cursec > sl[0])
-			seek += cursec - sl[0];
-		else
-			seek += sl[0] - cursec;
-	}
-
-	if (cursec > ((maxsec + minsec) / 2))
-		rev = 1;
-
-	if (ioseek > ((maxsec - minsec) / 2))
-		rev = 0;
-
-	if (!((rev && r) || (!rev && s)))
-		sort(sl, il, n_ready, rev);
-
-	if (!input_only)
-		for (n = 0; n < n_ready; n++) {
-			k = il[n];
-			cpp = &ha->cp[k];
-			SCpnt = cpp->SCpnt;
-			ll[n] = blk_rq_sectors(SCpnt->request);
-			pl[n] = SCpnt->serial_number;
-
-			if (!n)
-				continue;
-
-			if ((sl[n] == sl[n - 1])
-			    || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
-			    || (rev && ((sl[n] + ll[n]) > sl[n - 1])))
-				overlap = 1;
-		}
-
-	if (overlap)
-		sort(pl, il, n_ready, 0);
-
-	if (link_statistics) {
-		if (cursec > sl[0])
-			iseek = cursec - sl[0];
-		else
-			iseek = sl[0] - cursec;
-		batchcount++;
-		readycount += n_ready;
-		seeknosort += seek / 1024;
-		if (input_only)
-			inputcount++;
-		if (overlap) {
-			ovlcount++;
-			seeksorted += iseek / 1024;
-		} else
-			seeksorted += (iseek + maxsec - minsec) / 1024;
-		if (rev && !r) {
-			revcount++;
-			readysorted += n_ready;
-		}
-		if (!rev && !s) {
-			sortcount++;
-			readysorted += n_ready;
-		}
-	}
-#if defined(DEBUG_LINKED_COMMANDS)
-	if (link_statistics && (overlap || !(flushcount % link_statistics)))
-		for (n = 0; n < n_ready; n++) {
-			k = il[n];
-			cpp = &ha->cp[k];
-			SCpnt = cpp->SCpnt;
-			scmd_printk(KERN_INFO, SCpnt,
-			    "%s mb %d fc %d nr %d sec %ld ns %u"
-			     " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
-			     (ihdlr ? "ihdlr" : "qcomm"),
-			     k, flushcount,
-			     n_ready, blk_rq_pos(SCpnt->request),
-			     blk_rq_sectors(SCpnt->request), cursec, YESNO(s),
-			     YESNO(r), YESNO(rev), YESNO(input_only),
-			     YESNO(overlap), cpp->din);
-		}
-#endif
-	return overlap;
-}
-
-static void flush_dev(struct scsi_device *dev, unsigned long cursec,
-		      struct hostdata *ha, unsigned int ihdlr)
-{
-	struct scsi_cmnd *SCpnt;
-	struct mscp *cpp;
-	unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
-
-	for (k = 0; k < dev->host->can_queue; k++) {
-
-		if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE)
-			continue;
-
-		cpp = &ha->cp[k];
-		SCpnt = cpp->SCpnt;
-
-		if (SCpnt->device != dev)
-			continue;
-
-		if (ha->cp_stat[k] == IN_USE)
-			return;
-
-		il[n_ready++] = k;
-	}
-
-	if (reorder(ha, cursec, ihdlr, il, n_ready))
-		n_ready = 1;
-
-	for (n = 0; n < n_ready; n++) {
-		k = il[n];
-		cpp = &ha->cp[k];
-		SCpnt = cpp->SCpnt;
-
-		if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) {
-			scmd_printk(KERN_INFO, SCpnt,
-			    "%s, mbox %d, adapter"
-			     " busy, will abort.\n",
-			     (ihdlr ? "ihdlr" : "qcomm"),
-			     k);
-			ha->cp_stat[k] = ABORTING;
-			continue;
-		}
-
-		ha->cp_stat[k] = IN_USE;
-	}
-}
-
-static irqreturn_t ihdlr(struct Scsi_Host *shost)
-{
-	struct scsi_cmnd *SCpnt;
-	unsigned int i, k, c, status, tstatus, reg;
-	struct mssp *spp;
-	struct mscp *cpp;
-	struct hostdata *ha = (struct hostdata *)shost->hostdata;
-	int irq = shost->irq;
-
-	/* Check if this board need to be serviced */
-	if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED))
-		goto none;
-
-	ha->iocount++;
-
-	if (do_trace)
-		printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq,
-		       ha->iocount);
-
-	/* Check if this board is still busy */
-	if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) {
-		reg = inb(shost->io_port + REG_STATUS);
-		printk
-		    ("%s: ihdlr, busy timeout error,  irq %d, reg 0x%x, count %d.\n",
-		     ha->board_name, irq, reg, ha->iocount);
-		goto none;
-	}
-
-	spp = &ha->sp;
-
-	/* Make a local copy just before clearing the interrupt indication */
-	memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp));
-
-	/* Clear the completion flag and cp pointer on the dynamic copy of sp */
-	memset(ha->sp_cpu_addr, 0, sizeof(struct mssp));
-
-	/* Read the status register to clear the interrupt indication */
-	reg = inb(shost->io_port + REG_STATUS);
-
-#if defined (DEBUG_INTERRUPT)
-	{
-		unsigned char *bytesp;
-		int cnt;
-		bytesp = (unsigned char *)spp;
-		if (ha->iocount < 200) {
-			printk("sp[] =");
-			for (cnt = 0; cnt < 15; cnt++)
-				printk(" 0x%x", bytesp[cnt]);
-			printk("\n");
-		}
-	}
-#endif
-
-	/* Reject any sp with supspect data */
-	if (spp->eoc == 0 && ha->iocount > 1)
-		printk
-		    ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n",
-		     ha->board_name, irq, reg, ha->iocount);
-	if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue)
-		printk
-		    ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n",
-		     ha->board_name, spp->cpp_index, irq, reg, ha->iocount);
-	if (spp->eoc == 0 || spp->cpp_index < 0
-	    || spp->cpp_index >= shost->can_queue)
-		goto handled;
-
-	/* Find the mailbox to be serviced on this board */
-	i = spp->cpp_index;
-
-	cpp = &(ha->cp[i]);
-
-#if defined(DEBUG_GENERATE_ABORTS)
-	if ((ha->iocount > 500) && ((ha->iocount % 500) < 3))
-		goto handled;
-#endif
-
-	if (ha->cp_stat[i] == IGNORE) {
-		ha->cp_stat[i] = FREE;
-		goto handled;
-	} else if (ha->cp_stat[i] == LOCKED) {
-		ha->cp_stat[i] = FREE;
-		printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i,
-		       ha->iocount);
-		goto handled;
-	} else if (ha->cp_stat[i] == FREE) {
-		printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i,
-		       ha->iocount);
-		goto handled;
-	} else if (ha->cp_stat[i] == IN_RESET)
-		printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i);
-	else if (ha->cp_stat[i] != IN_USE)
-		panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
-		      ha->board_name, i, ha->cp_stat[i]);
-
-	ha->cp_stat[i] = FREE;
-	SCpnt = cpp->SCpnt;
-
-	if (SCpnt == NULL)
-		panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i);
-
-	if (SCpnt->host_scribble == NULL)
-		panic("%s: ihdlr, mbox %d, SCpnt %p garbled.\n", ha->board_name,
-		      i, SCpnt);
-
-	if (*(unsigned int *)SCpnt->host_scribble != i)
-		panic("%s: ihdlr, mbox %d, index mismatch %d.\n",
-		      ha->board_name, i,
-		      *(unsigned int *)SCpnt->host_scribble);
-
-	sync_dma(i, ha);
-
-	if (linked_comm && SCpnt->device->queue_depth > 2
-	    && TLDEV(SCpnt->device->type))
-		flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 1);
-
-	tstatus = status_byte(spp->target_status);
-
-#if defined(DEBUG_GENERATE_ERRORS)
-	if ((ha->iocount > 500) && ((ha->iocount % 200) < 2))
-		spp->adapter_status = 0x01;
-#endif
-
-	switch (spp->adapter_status) {
-	case ASOK:		/* status OK */
-
-		/* Forces a reset if a disk drive keeps returning BUSY */
-		if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
-			status = DID_ERROR << 16;
-
-		/* If there was a bus reset, redo operation on each target */
-		else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
-			 && ha->target_redo[SCpnt->device->id][SCpnt->
-								  device->
-								  channel])
-			status = DID_BUS_BUSY << 16;
-
-		/* Works around a flaw in scsi.c */
-		else if (tstatus == CHECK_CONDITION
-			 && SCpnt->device->type == TYPE_DISK
-			 && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
-			status = DID_BUS_BUSY << 16;
-
-		else
-			status = DID_OK << 16;
-
-		if (tstatus == GOOD)
-			ha->target_redo[SCpnt->device->id][SCpnt->device->
-							      channel] = 0;
-
-		if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
-		    (!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 &&
-		       (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
-			printk("%s: ihdlr, target %d.%d:%d, "
-			       "target_status 0x%x, sense key 0x%x.\n",
-			       ha->board_name,
-			       SCpnt->device->channel, SCpnt->device->id,
-			       (u8)SCpnt->device->lun,
-			       spp->target_status, SCpnt->sense_buffer[2]);
-
-		ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0;
-
-		if (ha->last_retried_pid == SCpnt->serial_number)
-			ha->retries = 0;
-
-		break;
-	case ASST:		/* Selection Time Out */
-	case 0x02:		/* Command Time Out   */
-
-		if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1)
-			status = DID_ERROR << 16;
-		else {
-			status = DID_TIME_OUT << 16;
-			ha->target_to[SCpnt->device->id][SCpnt->device->
-							    channel]++;
-		}
-
-		break;
-
-		/* Perform a limited number of internal retries */
-	case 0x03:		/* SCSI Bus Reset Received */
-	case 0x04:		/* Initial Controller Power-up */
-
-		for (c = 0; c <= shost->max_channel; c++)
-			for (k = 0; k < shost->max_id; k++)
-				ha->target_redo[k][c] = 1;
-
-		if (SCpnt->device->type != TYPE_TAPE
-		    && ha->retries < MAX_INTERNAL_RETRIES) {
-
-#if defined(DID_SOFT_ERROR)
-			status = DID_SOFT_ERROR << 16;
-#else
-			status = DID_BUS_BUSY << 16;
-#endif
-
-			ha->retries++;
-			ha->last_retried_pid = SCpnt->serial_number;
-		} else
-			status = DID_ERROR << 16;
-
-		break;
-	case 0x05:		/* Unexpected Bus Phase */
-	case 0x06:		/* Unexpected Bus Free */
-	case 0x07:		/* Bus Parity Error */
-	case 0x08:		/* SCSI Hung */
-	case 0x09:		/* Unexpected Message Reject */
-	case 0x0a:		/* SCSI Bus Reset Stuck */
-	case 0x0b:		/* Auto Request-Sense Failed */
-	case 0x0c:		/* Controller Ram Parity Error */
-	default:
-		status = DID_ERROR << 16;
-		break;
-	}
-
-	SCpnt->result = status | spp->target_status;
-
-#if defined(DEBUG_INTERRUPT)
-	if (SCpnt->result || do_trace)
-#else
-	if ((spp->adapter_status != ASOK && ha->iocount > 1000) ||
-	    (spp->adapter_status != ASOK &&
-	     spp->adapter_status != ASST && ha->iocount <= 1000) ||
-	    do_trace || msg_byte(spp->target_status))
-#endif
-		scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x,"
-		       " reg 0x%x, count %d.\n",
-		       i, spp->adapter_status, spp->target_status,
-		       reg, ha->iocount);
-
-	unmap_dma(i, ha);
-
-	/* Set the command state to inactive */
-	SCpnt->host_scribble = NULL;
-
-	SCpnt->scsi_done(SCpnt);
-
-	if (do_trace)
-		printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name,
-				irq, ha->iocount);
-
-      handled:
-	return IRQ_HANDLED;
-      none:
-	return IRQ_NONE;
-}
-
-static irqreturn_t do_interrupt_handler(int dummy, void *shap)
-{
-	struct Scsi_Host *shost;
-	unsigned int j;
-	unsigned long spin_flags;
-	irqreturn_t ret;
-
-	/* Check if the interrupt must be processed by this handler */
-	if ((j = (unsigned int)((char *)shap - sha)) >= num_boards)
-		return IRQ_NONE;
-	shost = sh[j];
-
-	spin_lock_irqsave(shost->host_lock, spin_flags);
-	ret = ihdlr(shost);
-	spin_unlock_irqrestore(shost->host_lock, spin_flags);
-	return ret;
-}
-
-static int eata2x_release(struct Scsi_Host *shost)
-{
-	struct hostdata *ha = (struct hostdata *)shost->hostdata;
-	unsigned int i;
-
-	for (i = 0; i < shost->can_queue; i++)
-		kfree((&ha->cp[i])->sglist);
-
-	for (i = 0; i < shost->can_queue; i++)
-		pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr,
-				 sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
-
-	if (ha->sp_cpu_addr)
-		pci_free_consistent(ha->pdev, sizeof(struct mssp),
-				    ha->sp_cpu_addr, ha->sp_dma_addr);
-
-	free_irq(shost->irq, &sha[ha->board_number]);
-
-	if (shost->dma_channel != NO_DMA)
-		free_dma(shost->dma_channel);
-
-	release_region(shost->io_port, shost->n_io_port);
-	scsi_unregister(shost);
-	return 0;
-}
-
-#include "scsi_module.c"
-
-#ifndef MODULE
-__setup("eata=", option_setup);
-#endif				/* end MODULE */

drivers/scsi/eata_generic.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-/********************************************************
-* Header file for eata_dma.c and eata_pio.c		*
-* Linux EATA SCSI drivers				*
-* (c) 1993-96 Michael Neuffer                           *
-*             [e-mail]                        *
-*             [e-mail]                 *
-*********************************************************
-* last change: 96/08/14                                 *
-********************************************************/
-
-
-#ifndef _EATA_GENERIC_H
-#define _EATA_GENERIC_H
-
-
-
-/*********************************************
- * Misc. definitions			     *
- *********************************************/
-
-#define R_LIMIT 0x20000
-
-#define MAXISA	   4
-#define MAXEISA	  16  
-#define MAXPCI	  16
-#define MAXIRQ	  16 
-#define MAXTARGET 16
-#define MAXCHANNEL 3
-
-#define IS_ISA	   'I'
-#define IS_EISA	   'E'
-#define IS_PCI	   'P'
-
-#define BROKEN_INQUIRY	1
-
-#define BUSMASTER       0xff
-#define PIO             0xfe
-
-#define EATA_SIGNATURE	0x45415441     /* BIG ENDIAN coded "EATA" sig.	 */
-
-#define DPT_ID1         0x12
-#define DPT_ID2         0x14
-
-#define ATT_ID1         0x06
-#define ATT_ID2         0x94
-#define ATT_ID3         0x0
-
-#define NEC_ID1         0x38
-#define NEC_ID2         0xa3
-#define NEC_ID3         0x82
-
- 
-#define EATA_CP_SIZE	 44
-
-#define MAX_PCI_DEVICES  32	       /* Maximum # Of Devices Per Bus	 */
-#define MAX_METHOD_2	 16	       /* Max Devices For Method 2	 */
-#define MAX_PCI_BUS	 16	       /* Maximum # Of Busses Allowed	 */
-
-#define SG_SIZE		 64 
-#define SG_SIZE_BIG	 252	       /* max. 8096 elements, 64k */
-
-#define UPPER_DEVICE_QUEUE_LIMIT 64    /* The limit we have to set for the 
-					* device queue to keep the broken 
-					* midlevel SCSI code from producing
-					* bogus timeouts
-					*/
-
-#define TYPE_DISK_QUEUE  16
-#define TYPE_TAPE_QUEUE  4
-#define TYPE_ROM_QUEUE   4
-#define TYPE_OTHER_QUEUE 2
-
-#define FREE	         0
-#define OK	         0
-#define NO_TIMEOUT       0
-#define USED	         1
-#define TIMEOUT	         2
-#define RESET	         4
-#define LOCKED	         8
-#define ABORTED          16
-
-#define READ             0
-#define WRITE            1
-#define OTHER            2
-
-#define HD(cmd)	 ((hostdata *)&(cmd->device->host->hostdata))
-#define CD(cmd)	 ((struct eata_ccb *)(cmd->host_scribble))
-#define SD(host) ((hostdata *)&(host->hostdata))
-
-/***********************************************
- *    EATA Command & Register definitions      *
- ***********************************************/
-#define PCI_REG_DPTconfig	 0x40	 
-#define PCI_REG_PumpModeAddress	 0x44	 
-#define PCI_REG_PumpModeData	 0x48	 
-#define PCI_REG_ConfigParam1	 0x50	 
-#define PCI_REG_ConfigParam2	 0x54	 
-
-
-#define EATA_CMD_PIO_SETUPTEST	 0xc6
-#define EATA_CMD_PIO_READ_CONFIG 0xf0
-#define EATA_CMD_PIO_SET_CONFIG	 0xf1
-#define EATA_CMD_PIO_SEND_CP	 0xf2
-#define EATA_CMD_PIO_RECEIVE_SP	 0xf3
-#define EATA_CMD_PIO_TRUNC	 0xf4
-
-#define EATA_CMD_RESET		 0xf9
-#define EATA_CMD_IMMEDIATE	 0xfa
-
-#define EATA_CMD_DMA_READ_CONFIG 0xfd
-#define EATA_CMD_DMA_SET_CONFIG	 0xfe
-#define EATA_CMD_DMA_SEND_CP	 0xff
-
-#define ECS_EMULATE_SENSE	 0xd4
-
-#define EATA_GENERIC_ABORT       0x00 
-#define EATA_SPECIFIC_RESET      0x01
-#define EATA_BUS_RESET           0x02
-#define EATA_SPECIFIC_ABORT      0x03
-#define EATA_QUIET_INTR          0x04
-#define EATA_COLD_BOOT_HBA       0x06	   /* Only as a last resort	*/
-#define EATA_FORCE_IO            0x07
-
-#define HA_CTRLREG     0x206       /* control register for HBA    */
-#define HA_CTRL_DISINT 0x02        /* CTRLREG: disable interrupts */
-#define HA_CTRL_RESCPU 0x04        /* CTRLREG: reset processor    */
-#define HA_CTRL_8HEADS 0x08        /* CTRLREG: set for drives with* 
-				    * >=8 heads (WD1003 rudimentary :-) */
-
-#define HA_WCOMMAND    0x07	   /* command register offset	*/
-#define HA_WIFC        0x06	   /* immediate command offset  */
-#define HA_WCODE       0x05 
-#define HA_WCODE2      0x04 
-#define HA_WDMAADDR    0x02	   /* DMA address LSB offset	*/  
-#define HA_RAUXSTAT    0x08	   /* aux status register offset*/
-#define HA_RSTATUS     0x07	   /* status register offset	*/
-#define HA_RDATA       0x00	   /* data register (16bit)	*/
-#define HA_WDATA       0x00	   /* data register (16bit)	*/
-
-#define HA_ABUSY       0x01	   /* aux busy bit		*/
-#define HA_AIRQ	       0x02	   /* aux IRQ pending bit	*/
-#define HA_SERROR      0x01	   /* pr. command ended in error*/
-#define HA_SMORE       0x02	   /* more data soon to come	*/
-#define HA_SCORR       0x04	   /* data corrected		*/
-#define HA_SDRQ	       0x08	   /* data request active	*/
-#define HA_SSC	       0x10	   /* seek complete		*/
-#define HA_SFAULT      0x20	   /* write fault		*/
-#define HA_SREADY      0x40	   /* drive ready		*/
-#define HA_SBUSY       0x80	   /* drive busy		*/
-#define HA_SDRDY       HA_SSC+HA_SREADY+HA_SDRQ 
-
-/**********************************************
- * Message definitions			      *
- **********************************************/
-
-#define HA_NO_ERROR	 0x00	/* No Error				*/
-#define HA_ERR_SEL_TO	 0x01	/* Selection Timeout			*/
-#define HA_ERR_CMD_TO	 0x02	/* Command Timeout			*/
-#define HA_BUS_RESET	 0x03	/* SCSI Bus Reset Received		*/
-#define HA_INIT_POWERUP	 0x04	/* Initial Controller Power-up		*/
-#define HA_UNX_BUSPHASE	 0x05	/* Unexpected Bus Phase			*/
-#define HA_UNX_BUS_FREE	 0x06	/* Unexpected Bus Free			*/
-#define HA_BUS_PARITY	 0x07	/* Bus Parity Error			*/
-#define HA_SCSI_HUNG	 0x08	/* SCSI Hung				*/
-#define HA_UNX_MSGRJCT	 0x09	/* Unexpected Message Rejected		*/
-#define HA_RESET_STUCK	 0x0a	/* SCSI Bus Reset Stuck			*/
-#define HA_RSENSE_FAIL	 0x0b	/* Auto Request-Sense Failed		*/
-#define HA_PARITY_ERR	 0x0c	/* Controller Ram Parity Error		*/
-#define HA_CP_ABORT_NA	 0x0d	/* Abort Message sent to non-active cmd */
-#define HA_CP_ABORTED	 0x0e	/* Abort Message sent to active cmd	*/
-#define HA_CP_RESET_NA	 0x0f	/* Reset Message sent to non-active cmd */
-#define HA_CP_RESET	 0x10	/* Reset Message sent to active cmd	*/
-#define HA_ECC_ERR	 0x11	/* Controller Ram ECC Error		*/
-#define HA_PCI_PARITY	 0x12	/* PCI Parity Error			*/
-#define HA_PCI_MABORT	 0x13	/* PCI Master Abort			*/
-#define HA_PCI_TABORT	 0x14	/* PCI Target Abort			*/
-#define HA_PCI_STABORT	 0x15	/* PCI Signaled Target Abort		*/
-
-/**********************************************
- *  Other  definitions			      *
- **********************************************/
-
-struct reg_bit {      /* reading this one will clear the interrupt    */
-    __u8 error:1;     /* previous command ended in an error	      */
-    __u8 more:1;      /* more DATA coming soon, poll BSY & DRQ (PIO)  */
-    __u8 corr:1;      /* data read was successfully corrected with ECC*/
-    __u8 drq:1;	      /* data request active  */     
-    __u8 sc:1;	      /* seek complete	      */
-    __u8 fault:1;     /* write fault	      */
-    __u8 ready:1;     /* drive ready	      */
-    __u8 busy:1;      /* controller busy      */
-};
-
-struct reg_abit {     /* reading this won't clear the interrupt */
-    __u8 abusy:1;     /* auxiliary busy				*/
-    __u8 irq:1;	      /* set when drive interrupt is asserted	*/
-    __u8 dummy:6;
-};
-
-struct eata_register {	    /* EATA register set */
-    __u8 data_reg[2];	    /* R, couldn't figure this one out		*/
-    __u8 cp_addr[4];	    /* W, CP address register			*/
-    union { 
-	__u8 command;	    /* W, command code: [read|set] conf, send CP*/
-	struct reg_bit status;	/* R, see register_bit1			*/
-	__u8 statusbyte;
-    } ovr;   
-    struct reg_abit aux_stat; /* R, see register_bit2			*/
-};
-
-struct get_conf {	      /* Read Configuration Array		*/
-    __u32  len;		      /* Should return 0x22, 0x24, etc		*/
-    __u32 signature;	      /* Signature MUST be "EATA"		*/
-    __u8    version2:4,
-	     version:4;	      /* EATA Version level			*/
-    __u8 OCS_enabled:1,	      /* Overlap Command Support enabled	*/
-	 TAR_support:1,	      /* SCSI Target Mode supported		*/
-	      TRNXFR:1,	      /* Truncate Transfer Cmd not necessary	*
-			       * Only used in PIO Mode			*/
-	MORE_support:1,	      /* MORE supported (only PIO Mode)		*/
-	 DMA_support:1,	      /* DMA supported Driver uses only		*
-			       * this mode				*/
-	   DMA_valid:1,	      /* DRQ value in Byte 30 is valid		*/
-		 ATA:1,	      /* ATA device connected (not supported)	*/
-	   HAA_valid:1;	      /* Hostadapter Address is valid		*/
-
-    __u16 cppadlen;	      /* Number of pad bytes send after CD data *
-			       * set to zero for DMA commands		*/
-    __u8 scsi_id[4];	      /* SCSI ID of controller 2-0 Byte 0 res.	*
-			       * if not, zero is returned		*/
-    __u32  cplen;	      /* CP length: number of valid cp bytes	*/
-    __u32  splen;	      /* Number of bytes returned after		* 
-			       * Receive SP command			*/
-    __u16 queuesiz;	      /* max number of queueable CPs		*/
-    __u16 dummy;
-    __u16 SGsiz;	      /* max number of SG table entries		*/
-    __u8    IRQ:4,	      /* IRQ used this HA			*/
-	 IRQ_TR:1,	      /* IRQ Trigger: 0=edge, 1=level		*/
-	 SECOND:1,	      /* This is a secondary controller		*/
-    DMA_channel:2;	      /* DRQ index, DRQ is 2comp of DRQX	*/
-    __u8 sync;		      /* device at ID 7 tru 0 is running in	*
-			       * synchronous mode, this will disappear	*/
-    __u8   DSBLE:1,	      /* ISA i/o addressing is disabled		*/
-	 FORCADR:1,	      /* i/o address has been forced		*/
-	  SG_64K:1,
-	  SG_UAE:1,
-		:4;
-    __u8  MAX_ID:5,	      /* Max number of SCSI target IDs		*/
-	MAX_CHAN:3;	      /* Number of SCSI busses on HBA		*/
-    __u8 MAX_LUN;	      /* Max number of LUNs			*/
-    __u8	:3,
-	 AUTOTRM:1,
-	 M1_inst:1,
-	 ID_qest:1,	      /* Raidnum ID is questionable		*/
-	  is_PCI:1,	      /* HBA is PCI				*/
-	 is_EISA:1;	      /* HBA is EISA				*/
-    __u8 RAIDNUM;             /* unique HBA identifier                  */
-    __u8 unused[474]; 
-};
-
-struct eata_sg_list
-{
-    __u32 data;
-    __u32 len;
-};
-
-struct eata_ccb {	      /* Send Command Packet structure	    */
- 
-    __u8 SCSI_Reset:1,	      /* Cause a SCSI Bus reset on the cmd	*/
-	   HBA_Init:1,	      /* Cause Controller to reinitialize	*/
-       Auto_Req_Sen:1,	      /* Do Auto Request Sense on errors	*/
-	    scatter:1,	      /* Data Ptr points to a SG Packet		*/
-	     Resrvd:1,	      /* RFU					*/
-	  Interpret:1,	      /* Interpret the SCSI cdb of own use	*/
-	    DataOut:1,	      /* Data Out phase with command		*/
-	     DataIn:1;	      /* Data In phase with command		*/
-    __u8 reqlen;	      /* Request Sense Length			* 
-			       * Valid if Auto_Req_Sen=1		*/
-    __u8 unused[3];
-    __u8  FWNEST:1,	      /* send cmd to phys RAID component	*/
-	 unused2:7;
-    __u8 Phsunit:1,	      /* physical unit on mirrored pair		*/
-	    I_AT:1,	      /* inhibit address translation		*/
-	 I_HBA_C:1,	      /* HBA inhibit caching			*/
-	 unused3:5;
-
-    __u8     cp_id:5,	      /* SCSI Device ID of target		*/ 
-	cp_channel:3;	      /* SCSI Channel # of HBA			*/
-    __u8    cp_lun:3,
-		  :2,
-	 cp_luntar:1,	      /* CP is for target ROUTINE		*/
-	 cp_dispri:1,	      /* Grant disconnect privilege		*/
-       cp_identify:1;	      /* Always TRUE				*/
-    __u8 cp_msg1;	      /* Message bytes 0-3			*/
-    __u8 cp_msg2;
-    __u8 cp_msg3;
-    __u8 cp_cdb[12];	      /* Command Descriptor Block		*/
-    __u32 cp_datalen;	      /* Data Transfer Length			*
-			       * If scatter=1 len of sg package		*/
-    void *cp_viraddr;	      /* address of this ccb			*/
-    __u32 cp_dataDMA;	      /* Data Address, if scatter=1		*
-			       * address of scatter packet		*/
-    __u32 cp_statDMA;	      /* address for Status Packet		*/ 
-    __u32 cp_reqDMA;	      /* Request Sense Address, used if		*
-			       * CP command ends with error		*/
-    /* Additional CP info begins here */
-    __u32 timestamp;	      /* Needed to measure command latency	*/
-    __u32 timeout;
-    __u8 sizeindex;
-    __u8 rw_latency;
-    __u8 retries;
-    __u8 status;	      /* status of this queueslot		*/
-    struct scsi_cmnd *cmd;    /* address of cmd				*/
-    struct eata_sg_list *sg_list;
-};
-
-
-struct eata_sp {
-    __u8 hba_stat:7,	      /* HBA status				*/
-	      EOC:1;	      /* True if command finished		*/
-    __u8 scsi_stat;	      /* Target SCSI status			*/
-    __u8 reserved[2];
-    __u32  residue_len;	      /* Number of bytes not transferred	*/
-    struct eata_ccb *ccb;     /* Address set in COMMAND PACKET		*/
-    __u8 msg[12];
-};
-
-typedef struct hstd {
-    __u8   vendor[9];
-    __u8   name[18];
-    __u8   revision[6];
-    __u8   EATA_revision;
-    __u32  firmware_revision;
-    __u8   HBA_number;
-    __u8   bustype;		 /* bustype of HBA	       */
-    __u8   channel;		 /* # of avail. scsi channels  */
-    __u8   state;		 /* state of HBA	       */
-    __u8   primary;		 /* true if primary	       */
-    __u8        more_support:1,  /* HBA supports MORE flag     */
-           immediate_support:1,  /* HBA supports IMMEDIATE CMDs*/
-              broken_INQUIRY:1;	 /* This is an EISA HBA with   *
-				  * broken INQUIRY	       */
-    __u8   do_latency;		 /* Latency measurement flag   */
-    __u32  reads[13];
-    __u32  writes[13];
-    __u32  reads_lat[12][4];
-    __u32  writes_lat[12][4];
-    __u32  all_lat[4];
-    __u8   resetlevel[MAXCHANNEL]; 
-    __u32  last_ccb;		 /* Last used ccb	       */
-    __u32  cplen;		 /* size of CP in words	       */
-    __u16  cppadlen;		 /* pad length of cp in words  */
-    __u16  queuesize;
-    __u16  sgsize;               /* # of entries in the SG list*/
-    __u16  devflags;		 /* bits set for detected devices */
-    __u8   hostid;		 /* SCSI ID of HBA	       */
-    __u8   moresupport;		 /* HBA supports MORE flag     */
-    struct Scsi_Host *next;	    
-    struct Scsi_Host *prev;
-    struct pci_dev *pdev;	/* PCI device or NULL for non PCI */
-    struct eata_sp sp;		 /* status packet	       */ 
-    struct eata_ccb ccb[0];	 /* ccb array begins here      */
-}hostdata;
-
-/* structure for max. 2 emulated drives */
-struct drive_geom_emul {
-    __u8  trans;		 /* translation flag 1=transl */
-    __u8  channel;		 /* SCSI channel number	      */
-    __u8  HBA;			 /* HBA number (prim/sec)     */
-    __u8  id;			 /* drive id		      */
-    __u8  lun;			 /* drive lun		      */
-    __u32 heads;		 /* number of heads	      */
-    __u32 sectors;		 /* number of sectors	      */
-    __u32 cylinder;		 /* number of cylinders	      */
-};
-
-struct geom_emul {
-    __u8 bios_drives;		 /* number of emulated drives */
-    struct drive_geom_emul drv[2]; /* drive structures	      */
-};
-
-#endif /* _EATA_GENERIC_H */
-
-/*
- * Overrides for Emacs so that we almost follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * tab-width: 8
- * End:
- */

drivers/scsi/eata_pio.c

···
-/************************************************************
- *                                                          *
- *               Linux EATA SCSI PIO driver                 *
- *                                                          *
- *  based on the CAM document CAM/89-004 rev. 2.0c,         *
- *  DPT's driver kit, some internal documents and source,   *
- *  and several other Linux scsi drivers and kernel docs.   *
- *                                                          *
- *  The driver currently:                                   *
- *      -supports all EATA-PIO boards                       *
- *      -only supports DASD devices                         *
- *                                                          *
- *  (c)1993-96 Michael Neuffer, Alfred Arnold               *
- *             [e-mail]               *
- *             [e-mail]                      * 
- *                                                          *
- *  Updated 2002 by Alan Cox <[e-mail]> for *
- *   Linux 2.5.x and the newer locking and error handling   *
- *                                                          *
- *  This program is free software; you can redistribute it  *
- *  and/or modify it under the terms of the GNU General     *
- *  Public License as published by the Free Software        *
- *  Foundation; either version 2 of the License, or         *
- *  (at your option) any later version.                     *
- *                                                          *
- *  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 kernel; if not, write to *
- *  the Free Software Foundation, Inc., 675 Mass Ave,       *
- *  Cambridge, MA 02139, USA.                               *
- *							    *
- *  For the avoidance of doubt the "preferred form" of this *
- *  code is one which is in an open non patent encumbered   *
- *  format. Where cryptographic key signing forms part of   *
- *  the process of creating an executable the information   *
- *  including keys needed to generate an equivalently       *
- *  functional executable are deemed to be part of the 	    *
- *  source code are deemed to be part of the source code.   *
- *                                                          *
- ************************************************************
- *  last change: 2002/11/02               OS: Linux 2.5.45  *
- ************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/pci.h>
-#include <linux/proc_fs.h>
-#include <linux/interrupt.h>
-#include <linux/blkdev.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-
-#include "eata_generic.h"
-#include "eata_pio.h"
-
-
-static unsigned int ISAbases[MAXISA] =	{
-	 0x1F0, 0x170, 0x330, 0x230
-};
-
-static unsigned int ISAirqs[MAXISA] = {
-	14, 12, 15, 11
-};
-
-static unsigned char EISAbases[] = { 
-	1, 1, 1, 1, 1, 1, 1, 1,
-	1, 1, 1, 1, 1, 1, 1, 1 
-};
-
-static unsigned int registered_HBAs;
-static struct Scsi_Host *last_HBA;
-static struct Scsi_Host *first_HBA;
-static unsigned char reg_IRQ[16];
-static unsigned char reg_IRQL[16];
-static unsigned long int_counter;
-static unsigned long queue_counter;
-
-static struct scsi_host_template driver_template;
-
-static int eata_pio_show_info(struct seq_file *m, struct Scsi_Host *shost)
-{
-	seq_printf(m, "EATA (Extended Attachment) PIO driver version: "
-		   "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
-	seq_printf(m, "queued commands:     %10ld\n"
-		   "processed interrupts:%10ld\n", queue_counter, int_counter);
-	seq_printf(m, "\nscsi%-2d: HBA %.10s\n",
-		   shost->host_no, SD(shost)->name);
-	seq_printf(m, "Firmware revision: v%s\n",
-		   SD(shost)->revision);
-	seq_puts(m, "IO: PIO\n");
-	seq_printf(m, "Base IO : %#.4x\n", (u32) shost->base);
-	seq_printf(m, "Host Bus: %s\n",
-		   (SD(shost)->bustype == 'P')?"PCI ":
-		   (SD(shost)->bustype == 'E')?"EISA":"ISA ");
-	return 0;
-}
-
-static int eata_pio_release(struct Scsi_Host *sh)
-{
-	hostdata *hd = SD(sh);
-	if (sh->irq && reg_IRQ[sh->irq] == 1)
-		free_irq(sh->irq, NULL);
-	else
-		reg_IRQ[sh->irq]--;
-	if (SD(sh)->channel == 0) {
-		if (sh->io_port && sh->n_io_port)
-			release_region(sh->io_port, sh->n_io_port);
-	}
-	/* At this point the PCI reference can go */
-	if (hd->pdev)
-		pci_dev_put(hd->pdev);
-	return 1;
-}
-
-static void IncStat(struct scsi_pointer *SCp, unsigned int Increment)
-{
-	SCp->ptr += Increment;
-	if ((SCp->this_residual -= Increment) == 0) {
-		if ((--SCp->buffers_residual) == 0)
-			SCp->Status = 0;
-		else {
-			SCp->buffer++;
-			SCp->ptr = sg_virt(SCp->buffer);
-			SCp->this_residual = SCp->buffer->length;
-		}
-	}
-}
-
-static irqreturn_t eata_pio_int_handler(int irq, void *dev_id);
-
-static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id)
-{
-	unsigned long flags;
-	struct Scsi_Host *dev = dev_id;
-	irqreturn_t ret;
-
-	spin_lock_irqsave(dev->host_lock, flags);
-	ret = eata_pio_int_handler(irq, dev_id);
-	spin_unlock_irqrestore(dev->host_lock, flags);
-	return ret;
-}
-
-static irqreturn_t eata_pio_int_handler(int irq, void *dev_id)
-{
-	unsigned int eata_stat = 0xfffff;
-	struct scsi_cmnd *cmd;
-	hostdata *hd;
-	struct eata_ccb *cp;
-	unsigned long base;
-	unsigned int x, z;
-	struct Scsi_Host *sh;
-	unsigned short zwickel = 0;
-	unsigned char stat, odd;
-	irqreturn_t ret = IRQ_NONE;
-
-	for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) 
-	{
-		if (sh->irq != irq)
-			continue;
-		if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
-			continue;
-
-		int_counter++;
-		ret = IRQ_HANDLED;
-
-		hd = SD(sh);
-
-		cp = &hd->ccb[0];
-		cmd = cp->cmd;
-		base = cmd->device->host->base;
-
-		do {
-			stat = inb(base + HA_RSTATUS);
-			if (stat & HA_SDRQ) {
-				if (cp->DataIn) {
-					z = 256;
-					odd = 0;
-					while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
-						if (odd) {
-							*(cmd->SCp.ptr) = zwickel >> 8;
-							IncStat(&cmd->SCp, 1);
-							odd = 0;
-						}
-						x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
-						insw(base + HA_RDATA, cmd->SCp.ptr, x);
-						z -= x;
-						IncStat(&cmd->SCp, 2 * x);
-						if ((z > 0) && (cmd->SCp.this_residual == 1)) {
-							zwickel = inw(base + HA_RDATA);
-							*(cmd->SCp.ptr) = zwickel & 0xff;
-							IncStat(&cmd->SCp, 1);
-							z--;
-							odd = 1;
-						}
-					}
-					while (z > 0) {
-						zwickel = inw(base + HA_RDATA);
-						z--;
-					}
-				} else {	/* cp->DataOut */
-
-					odd = 0;
-					z = 256;
-					while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
-						if (odd) {
-							zwickel += *(cmd->SCp.ptr) << 8;
-							IncStat(&cmd->SCp, 1);
-							outw(zwickel, base + HA_RDATA);
-							z--;
-							odd = 0;
-						}
-						x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
-						outsw(base + HA_RDATA, cmd->SCp.ptr, x);
-						z -= x;
-						IncStat(&cmd->SCp, 2 * x);
-						if ((z > 0) && (cmd->SCp.this_residual == 1)) {
-							zwickel = *(cmd->SCp.ptr);
-							zwickel &= 0xff;
-							IncStat(&cmd->SCp, 1);
-							odd = 1;
-						}
-					}
-					while (z > 0 || odd) {
-						outw(zwickel, base + HA_RDATA);
-						z--;
-						odd = 0;
-					}
-				}
-			}
-		}
-		while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
-
-		/* terminate handler if HBA goes busy again, i.e. transfers
-		 * more data */
-
-		if (stat & HA_SBUSY)
-			break;
-
-		/* OK, this is quite stupid, but I haven't found any correct
-		 * way to get HBA&SCSI status so far */
-
-		if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
-			cmd->result = (DID_OK << 16);
-			hd->devflags |= (1 << cp->cp_id);
-		} else if (hd->devflags & (1 << cp->cp_id))
-			cmd->result = (DID_OK << 16) + 0x02;
-		else
-			cmd->result = (DID_NO_CONNECT << 16);
-
-		if (cp->status == LOCKED) {
-			cp->status = FREE;
-			eata_stat = inb(base + HA_RSTATUS);
-			printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
-			return ret;
-		}
-#if DBG_INTR2
-		if (stat != 0x50)
-			printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
-#endif
-
-		cp->status = FREE;	/* now we can release the slot  */
-
-		cmd->scsi_done(cmd);
-	}
-
-	return ret;
-}
-
-static inline unsigned int eata_pio_send_command(unsigned long base, unsigned char command)
-{
-	unsigned int loop = 50;
-
-	while (inb(base + HA_RSTATUS) & HA_SBUSY)
-		if (--loop == 0)
-			return 1;
-
-	/* Enable interrupts for HBA.  It is not the best way to do it at this
-	 * place, but I hope that it doesn't interfere with the IDE driver 
-	 * initialization this way */
-
-	outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
-
-	outb(command, base + HA_WCOMMAND);
-	return 0;
-}
-
-static int eata_pio_queue_lck(struct scsi_cmnd *cmd,
-		void (*done)(struct scsi_cmnd *))
-{
-	unsigned int x, y;
-	unsigned long base;
-
-	hostdata *hd;
-	struct Scsi_Host *sh;
-	struct eata_ccb *cp;
-
-	queue_counter++;
-
-	hd = HD(cmd);
-	sh = cmd->device->host;
-	base = sh->base;
-
-	/* use only slot 0, as 2001 can handle only one cmd at a time */
-
-	y = x = 0;
-
-	if (hd->ccb[y].status != FREE) {
-
-		DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
-#if DEBUG_EATA
-		panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
-#else
-		panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
-#endif
-	}
-
-	cp = &hd->ccb[y];
-
-	memset(cp, 0, sizeof(struct eata_ccb));
-
-	cp->status = USED;	/* claim free slot */
-
-	DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
-		"eata_pio_queue 0x%p, y %d\n", cmd, y));
-
-	cmd->scsi_done = (void *) done;
-
-	if (cmd->sc_data_direction == DMA_TO_DEVICE)
-		cp->DataOut = 1;	/* Output mode */
-	else
-		cp->DataIn = 0;	/* Input mode  */
-
-	cp->Interpret = (cmd->device->id == hd->hostid);
-	cp->cp_datalen = cpu_to_be32(scsi_bufflen(cmd));
-	cp->Auto_Req_Sen = 0;
-	cp->cp_reqDMA = 0;
-	cp->reqlen = 0;
-
-	cp->cp_id = cmd->device->id;
-	cp->cp_lun = cmd->device->lun;
-	cp->cp_dispri = 0;
-	cp->cp_identify = 1;
-	memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
-
-	cp->cp_statDMA = 0;
-
-	cp->cp_viraddr = cp;
-	cp->cmd = cmd;
-	cmd->host_scribble = (char *) &hd->ccb[y];
-
-	if (!scsi_bufflen(cmd)) {
-		cmd->SCp.buffers_residual = 1;
-		cmd->SCp.ptr = NULL;
-		cmd->SCp.this_residual = 0;
-		cmd->SCp.buffer = NULL;
-	} else {
-		cmd->SCp.buffer = scsi_sglist(cmd);
-		cmd->SCp.buffers_residual = scsi_sg_count(cmd);
-		cmd->SCp.ptr = sg_virt(cmd->SCp.buffer);
-		cmd->SCp.this_residual = cmd->SCp.buffer->length;
-	}
-	cmd->SCp.Status = (cmd->SCp.this_residual != 0);	/* TRUE as long as bytes 
-								 * are to transfer */
-
-	if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
-		cmd->result = DID_BUS_BUSY << 16;
-		scmd_printk(KERN_NOTICE, cmd,
-			"eata_pio_queue pid 0x%p, HBA busy, "
-			"returning DID_BUS_BUSY, done.\n", cmd);
-		done(cmd);
-		cp->status = FREE;
-		return 0;
-	}
-	/* FIXME: timeout */
-	while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
-		cpu_relax();
-	outsw(base + HA_RDATA, cp, hd->cplen);
-	outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
-	for (x = 0; x < hd->cppadlen; x++)
-		outw(0, base + HA_RDATA);
-
-	DBG(DBG_QUEUE, scmd_printk(KERN_DEBUG, cmd,
-		"Queued base %#.4lx cmd: 0x%p "
-		"slot %d irq %d\n", sh->base, cmd, y, sh->irq));
-
-	return 0;
-}
-
-static DEF_SCSI_QCMD(eata_pio_queue)
-
-static int eata_pio_abort(struct scsi_cmnd *cmd)
-{
-	unsigned int loop = 100;
-
-	DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
-		"eata_pio_abort called pid: 0x%p\n", cmd));
-
-	while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
-		if (--loop == 0) {
-			printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
-			return FAILED;
-		}
-	if (CD(cmd)->status == FREE) {
-		DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
-		return FAILED;
-	}
-	if (CD(cmd)->status == USED) {
-		DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
-		/* We want to sleep a bit more here */
-		return FAILED;		/* SNOOZE */
-	}
-	if (CD(cmd)->status == RESET) {
-		printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
-		return FAILED;
-	}
-	if (CD(cmd)->status == LOCKED) {
-		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
-		return FAILED;
-	}
-	panic("eata_pio: abort: invalid slot status\n");
-}
-
-static int eata_pio_host_reset(struct scsi_cmnd *cmd)
-{
-	unsigned int x, limit = 0;
-	unsigned char success = 0;
-	struct scsi_cmnd *sp;
-	struct Scsi_Host *host = cmd->device->host;
-
-	DBG(DBG_ABNORM, scmd_printk(KERN_WARNING, cmd,
-		"eata_pio_reset called\n"));
-
-	spin_lock_irq(host->host_lock);
-
-	if (HD(cmd)->state == RESET) {
-		printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
-		spin_unlock_irq(host->host_lock);
-		return FAILED;
-	}
-
-	/* force all slots to be free */
-
-	for (x = 0; x < cmd->device->host->can_queue; x++) {
-
-		if (HD(cmd)->ccb[x].status == FREE)
-			continue;
-
-		sp = HD(cmd)->ccb[x].cmd;
-		HD(cmd)->ccb[x].status = RESET;
-		printk(KERN_WARNING "eata_pio_reset: slot %d in reset.\n", x);
-
-		if (sp == NULL)
-			panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
-	}
-
-	/* hard reset the HBA  */
-	outb(EATA_CMD_RESET, cmd->device->host->base + HA_WCOMMAND);
-
-	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
-	HD(cmd)->state = RESET;
-
-	spin_unlock_irq(host->host_lock);
-	msleep(3000);
-	spin_lock_irq(host->host_lock);
-
-	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
-
-	for (x = 0; x < cmd->device->host->can_queue; x++) {
-
-		/* Skip slots already set free by interrupt */
-		if (HD(cmd)->ccb[x].status != RESET)
-			continue;
-
-		sp = HD(cmd)->ccb[x].cmd;
-		sp->result = DID_RESET << 16;
-
-		/* This mailbox is terminated */
-		printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
-		HD(cmd)->ccb[x].status = FREE;
-
-		sp->scsi_done(sp);
-	}
-
-	HD(cmd)->state = 0;
-
-	spin_unlock_irq(host->host_lock);
-
-	if (success) {		/* hmmm... */
-		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
-		return SUCCESS;
-	} else {
-		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
-		return FAILED;
-	}
-}
-
-static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned int id, unsigned long cplen, unsigned short cppadlen)
-{
-	struct eata_ccb cp;
-	static char buff[256];
-	int z;
-
-	memset(&cp, 0, sizeof(struct eata_ccb));
-	memset(buff, 0, sizeof(buff));
-
-	cp.DataIn = 1;
-	cp.Interpret = 1;	/* Interpret command */
-
-	cp.cp_datalen = cpu_to_be32(254);
-	cp.cp_dataDMA = cpu_to_be32(0);
-
-	cp.cp_id = id;
-	cp.cp_lun = 0;
-
-	cp.cp_cdb[0] = INQUIRY;
-	cp.cp_cdb[1] = 0;
-	cp.cp_cdb[2] = 0;
-	cp.cp_cdb[3] = 0;
-	cp.cp_cdb[4] = 254;
-	cp.cp_cdb[5] = 0;
-
-	if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP))
-		return NULL;
-
-	while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
-		cpu_relax();
-
-	outsw(base + HA_RDATA, &cp, cplen);
-	outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
-	for (z = 0; z < cppadlen; z++)
-		outw(0, base + HA_RDATA);
-
-	while (inb(base + HA_RSTATUS) & HA_SBUSY)
-		cpu_relax();
-
-	if (inb(base + HA_RSTATUS) & HA_SERROR)
-		return NULL;
-	else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
-		return NULL;
-	else {
-		insw(base + HA_RDATA, &buff, 127);
-		while (inb(base + HA_RSTATUS) & HA_SDRQ)
-			inw(base + HA_RDATA);
-		return buff;
-	}
-}
-
-static int get_pio_conf_PIO(unsigned long base, struct get_conf *buf)
-{
-	unsigned long loop = HZ / 2;
-	int z;
-	unsigned short *p;
-
-	if (!request_region(base, 9, "eata_pio"))
-		return 0;
-
-	memset(buf, 0, sizeof(struct get_conf));
-
-	while (inb(base + HA_RSTATUS) & HA_SBUSY)
-		if (--loop == 0)
-			goto fail;
-
-	DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#lx\n", base));
-	eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
-
-	loop = 50;
-	for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
-		while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
-			if (--loop == 0)
-				goto fail;
-
-		loop = 50;
-		*p = inw(base + HA_RDATA);
-	}
-	if (inb(base + HA_RSTATUS) & HA_SERROR) {
-		DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
-					"transfer for HBA at %lx\n", base));
-		goto fail;
-	}
-
-	if (cpu_to_be32(EATA_SIGNATURE) != buf->signature)
-		goto fail;
-
-	DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
-				"at %#4lx EATA Level: %x\n",
-				base, (unsigned int) (buf->version)));
-
-	while (inb(base + HA_RSTATUS) & HA_SDRQ)
-		inw(base + HA_RDATA);
-
-	if (!ALLOW_DMA_BOARDS) {
-		for (z = 0; z < MAXISA; z++)
-			if (base == ISAbases[z]) {
-				buf->IRQ = ISAirqs[z];
-				break;
-			}
-	}
-
-	return 1;
-
- fail:
-	release_region(base, 9);
-	return 0;
-}
-
-static void print_pio_config(struct get_conf *gc)
-{
-	printk("Please check values: (read config data)\n");
-	printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", be32_to_cpu(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support);
-	printk("HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n", gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2], gc->scsi_id[1], be16_to_cpu(gc->queuesiz), be16_to_cpu(gc->SGsiz), gc->SECOND);
-	printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d\n", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest);
-}
-
-static unsigned int print_selftest(unsigned int base)
-{
-	unsigned char buffer[512];
-#ifdef VERBOSE_SETUP
-	int z;
-#endif
-
-	printk("eata_pio: executing controller self test & setup...\n");
-	while (inb(base + HA_RSTATUS) & HA_SBUSY);
-	outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
-	do {
-		while (inb(base + HA_RSTATUS) & HA_SBUSY)
-			/* nothing */ ;
-		if (inb(base + HA_RSTATUS) & HA_SDRQ) {
-			insw(base + HA_RDATA, &buffer, 256);
-#ifdef VERBOSE_SETUP
-			/* no beeps please... */
-			for (z = 0; z < 511 && buffer[z]; z++)
-				if (buffer[z] != 7)
-					printk("%c", buffer[z]);
-#endif
-		}
-	} while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
-
-	return (!(inb(base + HA_RSTATUS) & HA_SERROR));
-}
-
-static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev)
-{
-	unsigned long size = 0;
-	char *buff;
-	unsigned long cplen;
-	unsigned short cppadlen;
-	struct Scsi_Host *sh;
-	hostdata *hd;
-
-	DBG(DBG_REGISTER, print_pio_config(gc));
-
-	if (gc->DMA_support) {
-		printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
-		if (!ALLOW_DMA_BOARDS)
-			return 0;
-	}
-
-	if ((buff = get_pio_board_data(base, gc->IRQ, gc->scsi_id[3], cplen = (cpu_to_be32(gc->cplen) + 1) / 2, cppadlen = (cpu_to_be16(gc->cppadlen) + 1) / 2)) == NULL) {
-		printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", base);
-		return 0;
-	}
-
-	if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
-		printk("HBA at %#lx failed while performing self test & setup.\n", base);
-		return 0;
-	}
-
-	size = sizeof(hostdata) + (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz));
-
-	sh = scsi_register(&driver_template, size);
-	if (sh == NULL)
-		return 0;
-
-	if (!reg_IRQ[gc->IRQ]) {	/* Interrupt already registered ? */
-		if (!request_irq(gc->IRQ, do_eata_pio_int_handler, 0, "EATA-PIO", sh)) {
-			reg_IRQ[gc->IRQ]++;
-			if (!gc->IRQ_TR)
-				reg_IRQL[gc->IRQ] = 1;	/* IRQ is edge triggered */
-		} else {
-			printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
-			return 0;
-		}
-	} else {		/* More than one HBA on this IRQ */
-		if (reg_IRQL[gc->IRQ]) {
-			printk("Can't support more than one HBA on this IRQ,\n" "  if the IRQ is edge triggered. Sorry.\n");
-			return 0;
-		} else
-			reg_IRQ[gc->IRQ]++;
-	}
-
-	hd = SD(sh);
-
-	memset(hd->ccb, 0, (sizeof(struct eata_ccb) * be16_to_cpu(gc->queuesiz)));
-	memset(hd->reads, 0, sizeof(hd->reads));
-
-	strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
-	strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
-	SD(sh)->revision[0] = buff[32];
-	SD(sh)->revision[1] = buff[33];
-	SD(sh)->revision[2] = buff[34];
-	SD(sh)->revision[3] = '.';
-	SD(sh)->revision[4] = buff[35];
-	SD(sh)->revision[5] = 0;
-
-	switch (be32_to_cpu(gc->len)) {
-	case 0x1c:
-		SD(sh)->EATA_revision = 'a';
-		break;
-	case 0x1e:
-		SD(sh)->EATA_revision = 'b';
-		break;
-	case 0x22:
-		SD(sh)->EATA_revision = 'c';
-		break;
-	case 0x24:
-		SD(sh)->EATA_revision = 'z';
-		break;
-	default:
-		SD(sh)->EATA_revision = '?';
-	}
-
-	if (be32_to_cpu(gc->len) >= 0x22) {
-		if (gc->is_PCI)
-			hd->bustype = IS_PCI;
-		else if (gc->is_EISA)
-			hd->bustype = IS_EISA;
-		else
-			hd->bustype = IS_ISA;
-	} else {
-		if (buff[21] == '4')
-			hd->bustype = IS_PCI;
-		else if (buff[21] == '2')
-			hd->bustype = IS_EISA;
-		else
-			hd->bustype = IS_ISA;
-	}
-
-	SD(sh)->cplen = cplen;
-	SD(sh)->cppadlen = cppadlen;
-	SD(sh)->hostid = gc->scsi_id[3];
-	SD(sh)->devflags = 1 << gc->scsi_id[3];
-	SD(sh)->moresupport = gc->MORE_support;
-	sh->unique_id = base;
-	sh->base = base;
-	sh->io_port = base;
-	sh->n_io_port = 9;
-	sh->irq = gc->IRQ;
-	sh->dma_channel = PIO;
-	sh->this_id = gc->scsi_id[3];
-	sh->can_queue = 1;
-	sh->cmd_per_lun = 1;
-	sh->sg_tablesize = SG_ALL;
-
-	hd->channel = 0;
-
-	hd->pdev = pci_dev_get(pdev);	/* Keep a PCI reference */
-
-	sh->max_id = 8;
-	sh->max_lun = 8;
-
-	if (gc->SECOND)
-		hd->primary = 0;
-	else
-		hd->primary = 1;
-
-	hd->next = NULL;	/* build a linked list of all HBAs */
-	hd->prev = last_HBA;
-	if (hd->prev != NULL)
-		SD(hd->prev)->next = sh;
-	last_HBA = sh;
-	if (first_HBA == NULL)
-		first_HBA = sh;
-	registered_HBAs++;
-	return (1);
-}
-
-static void find_pio_ISA(struct get_conf *buf)
-{
-	int i;
-
-	for (i = 0; i < MAXISA; i++) {
-		if (!ISAbases[i])
-			continue;
-		if (!get_pio_conf_PIO(ISAbases[i], buf))
-			continue;
-		if (!register_pio_HBA(ISAbases[i], buf, NULL))
-			release_region(ISAbases[i], 9);
-		else
-			ISAbases[i] = 0;
-	}
-	return;
-}
-
-static void find_pio_EISA(struct get_conf *buf)
-{
-	u32 base;
-	int i;
-
-#ifdef CHECKPAL
-	u8 pal1, pal2, pal3;
-#endif
-
-	for (i = 0; i < MAXEISA; i++) {
-		if (EISAbases[i]) {	/* Still a possibility ?          */
-
-			base = 0x1c88 + (i * 0x1000);
-#ifdef CHECKPAL
-			pal1 = inb((u16) base - 8);
-			pal2 = inb((u16) base - 7);
-			pal3 = inb((u16) base - 6);
-
-			if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
-				DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
-#endif
-				if (get_pio_conf_PIO(base, buf)) {
-					DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
-					if (buf->IRQ) {
-						if (!register_pio_HBA(base, buf, NULL))
-							release_region(base, 9);
-					} else {
-						printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
-						release_region(base, 9);
-					}
-				}
-				/* Nothing found here so we take it from the list */
-				EISAbases[i] = 0;
-#ifdef CHECKPAL
-			}
-#endif
-		}
-	}
-	return;
-}
-
-static void find_pio_PCI(struct get_conf *buf)
-{
-#ifndef CONFIG_PCI
-	printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
-#else
-	struct pci_dev *dev = NULL;
-	unsigned long base, x;
-
-	while ((dev = pci_get_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
-		DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
-		if (pci_enable_device(dev))
-			continue;
-		pci_set_master(dev);
-		base = pci_resource_flags(dev, 0);
-		if (base & IORESOURCE_MEM) {
-			printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
-			continue;
-		}
-		base = pci_resource_start(dev, 0);
-		/* EISA tag there ? */
-		if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
-			continue;	/* Jep, it's forced, so move on  */
-		base += 0x10;	/* Now, THIS is the real address */
-		if (base != 0x1f8) {
-			/* We didn't find it in the primary search */
-			if (get_pio_conf_PIO(base, buf)) {
-				if (buf->FORCADR) {	/* If the address is forced */
-					release_region(base, 9);
-					continue;	/* we'll find it later      */
-				}
-
-				/* OK. We made it till here, so we can go now  
-				 * and register it. We  only have to check and 
-				 * eventually remove it from the EISA and ISA list 
-				 */
-
-				if (!register_pio_HBA(base, buf, dev)) {
-					release_region(base, 9);
-					continue;
-				}
-
-				if (base < 0x1000) {
-					for (x = 0; x < MAXISA; ++x) {
-						if (ISAbases[x] == base) {
-							ISAbases[x] = 0;
-							break;
-						}
-					}
-				} else if ((base & 0x0fff) == 0x0c88) {
-					x = (base >> 12) & 0x0f;
-					EISAbases[x] = 0;
-				}
-			}
-#ifdef CHECK_BLINK
-			else if (check_blink_state(base)) {
-				printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
-			}
-#endif
-		}
-	}
-#endif				/* #ifndef CONFIG_PCI */
-}
-
-static int eata_pio_detect(struct scsi_host_template *tpnt)
-{
-	struct Scsi_Host *HBA_ptr;
-	struct get_conf gc;
-	int i;
-
-	find_pio_PCI(&gc);
-	find_pio_EISA(&gc);
-	find_pio_ISA(&gc);
-
-	for (i = 0; i < MAXIRQ; i++)
-		if (reg_IRQ[i])
-			request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL);
-
-	HBA_ptr = first_HBA;
-
-	if (registered_HBAs != 0) {
-		printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
-		       "(c) 1993-95 Michael Neuffer, [e-mail]\n" "            Alfred Arnold,   [e-mail]\n" "This release only supports DASD devices (harddisks)\n", VER_MAJOR, VER_MINOR, VER_SUB);
-
-		printk("Registered HBAs:\n");
-		printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
-		for (i = 1; i <= registered_HBAs; i++) {
-			printk("scsi%-2d: %.10s v%s 2.0%c  %s %#.4lx   %2d   %d   %d   %c"
-			       "  %2d  %2d  %2d\n",
-			       HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
-			       SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
-			       "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
-			       HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
-			       SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
-			       HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
-			HBA_ptr = SD(HBA_ptr)->next;
-		}
-	}
-	return (registered_HBAs);
-}
-
-static struct scsi_host_template driver_template = {
-	.proc_name		= "eata_pio",
-	.name              	= "EATA (Extended Attachment) PIO driver",
-	.show_info         	= eata_pio_show_info,
-	.detect            	= eata_pio_detect,
-	.release           	= eata_pio_release,
-	.queuecommand      	= eata_pio_queue,
-	.eh_abort_handler  	= eata_pio_abort,
-	.eh_host_reset_handler	= eata_pio_host_reset,
-	.use_clustering    	= ENABLE_CLUSTERING,
-};
-
-MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
-MODULE_DESCRIPTION("EATA SCSI PIO driver");
-MODULE_LICENSE("GPL");
-
-#include "scsi_module.c"

drivers/scsi/eata_pio.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-/********************************************************
-* Header file for eata_pio.c Linux EATA-PIO SCSI driver *
-* (c) 1993-96 Michael Neuffer  	                        *
-*********************************************************
-* last change: 2002/11/02				*
-********************************************************/
-
-
-#ifndef _EATA_PIO_H
-#define _EATA_PIO_H
-
-#define VER_MAJOR 0
-#define VER_MINOR 0
-#define VER_SUB	  "1b"
-
-/************************************************************************
- * Here you can switch parts of the code on and of			*
- ************************************************************************/
-
-#define VERBOSE_SETUP		/* show startup screen of 2001 */
-#define ALLOW_DMA_BOARDS 1
-
-/************************************************************************
- * Debug options.							* 
- * Enable DEBUG and whichever options you require.			*
- ************************************************************************/
-#define DEBUG_EATA	1	/* Enable debug code.                       */
-#define DPT_DEBUG	0	/* Bobs special                             */
-#define DBG_DELAY	0	/* Build in delays so debug messages can be
-				 * be read before they vanish of the top of
-				 * the screen!
-				 */
-#define DBG_PROBE	0	/* Debug probe routines.                    */
-#define DBG_ISA		0	/* Trace ISA routines                       */
-#define DBG_EISA	0	/* Trace EISA routines                      */
-#define DBG_PCI		0	/* Trace PCI routines                       */
-#define DBG_PIO		0	/* Trace get_config_PIO                     */
-#define DBG_COM		0	/* Trace command call                       */
-#define DBG_QUEUE	0	/* Trace command queueing.                  */
-#define DBG_INTR	0	/* Trace interrupt service routine.         */
-#define DBG_INTR2	0	/* Trace interrupt service routine.         */
-#define DBG_PROC	0	/* Debug proc-fs related statistics         */
-#define DBG_PROC_WRITE	0
-#define DBG_REGISTER	0	/* */
-#define DBG_ABNORM	1	/* Debug abnormal actions (reset, abort)    */
-
-#if DEBUG_EATA
-#define DBG(x, y)   if ((x)) {y;}
-#else
-#define DBG(x, y)
-#endif
-
-#endif				/* _EATA_PIO_H */