[SCSI] ipr: Support attaching SATA devices

Adds support to attach SATA devices to ipr SAS adapters.

Signed-off-by: Brian King <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/Kconfig

···
 
 config SCSI_IPR
 	tristate "IBM Power Linux RAID adapter support"
-	depends on PCI && SCSI
+	depends on PCI && SCSI && ATA
 	select FW_LOADER
 	---help---
 	  This driver supports the IBM Power Linux family RAID adapters.

drivers/scsi/ipr.c

···
 #include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/libata.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
···
 #include <scsi/scsi_tcq.h>
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_transport.h>
 #include "ipr.h"
 
 /*
···
 	"FFFA: Undefined device response recovered by the IOA"},
 	{0x014A0000, 1, 1,
 	"FFF6: Device bus error, message or command phase"},
+	{0x014A8000, 0, 1,
+	"FFFE: Task Management Function failed"},
 	{0x015D0000, 0, 1,
 	"FFF6: Failure prediction threshold exceeded"},
 	{0x015D9200, 0, 1,
···
 	"Device bus status error"},
 	{0x04448600, 0, 1,
 	"8157: IOA error requiring IOA reset to recover"},
+	{0x04448700, 0, 0,
+	"ATA device status error"},
 	{0x04490000, 0, 0,
 	"Message reject received from the device"},
 	{0x04449200, 0, 1,
···
 	"9082: IOA detected device error"},
 	{0x044A0000, 1, 1,
 	"3110: Device bus error, message or command phase"},
+	{0x044A8000, 1, 1,
+	"3110: SAS Command / Task Management Function failed"},
 	{0x04670400, 0, 1,
 	"9091: Incorrect hardware configuration change has been detected"},
 	{0x04678000, 0, 1,
···
 	trace_entry->time = jiffies;
 	trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 	trace_entry->type = type;
-	trace_entry->cmd_index = ipr_cmd->cmd_index;
+	trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
+	trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 	trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 	trace_entry->u.add_data = add_data;
 }
···
 	ioarcb->read_ioadl_len = 0;
 	ioasa->ioasc = 0;
 	ioasa->residual_data_len = 0;
+	ioasa->u.gata.status = 0;
 
 	ipr_cmd->scsi_cmd = NULL;
+	ipr_cmd->qc = NULL;
 	ipr_cmd->sense_buffer[0] = 0;
 	ipr_cmd->dma_use_sg = 0;
 }
···
 }
 
 /**
+ * ipr_sata_eh_done - done function for aborted SATA commands
+ * @ipr_cmd:	ipr command struct
+ *
+ * This function is invoked for ops generated to SATA
+ * devices which are being aborted.
+ *
+ * Return value:
+ * 	none
+ **/
+static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
+{
+	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+	struct ata_queued_cmd *qc = ipr_cmd->qc;
+	struct ipr_sata_port *sata_port = qc->ap->private_data;
+
+	qc->err_mask |= AC_ERR_OTHER;
+	sata_port->ioasa.status |= ATA_BUSY;
+	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
+	ata_qc_complete(qc);
+}
+
+/**
  * ipr_scsi_eh_done - mid-layer done function for aborted ops
  * @ipr_cmd:	ipr command struct
  *
···
 
 		if (ipr_cmd->scsi_cmd)
 			ipr_cmd->done = ipr_scsi_eh_done;
+		else if (ipr_cmd->qc)
+			ipr_cmd->done = ipr_sata_eh_done;
 
 		ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
 		del_timer(&ipr_cmd->timer);
···
 	res->del_from_ml = 0;
 	res->resetting_device = 0;
 	res->sdev = NULL;
+	res->sata_port = NULL;
 }
 
 /**
···
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
-		if (ipr_error_table[i].ioasc == ioasc)
+		if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
 			return i;
 
 	return 0;
···
  **/
 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
 {
+	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
+	struct ipr_resource_entry *res;
+	unsigned long lock_flags = 0;
+
+	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+	res = (struct ipr_resource_entry *)sdev->hostdata;
+
+	if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
+		qdepth = IPR_MAX_CMD_PER_ATA_LUN;
+	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+
 	scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
 	return sdev->queue_depth;
 }
···
 }
 
 /**
+ * ipr_find_starget - Find target based on bus/target.
+ * @starget:	scsi target struct
+ *
+ * Return value:
+ * 	resource entry pointer if found / NULL if not found
+ **/
+static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
+	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
+	struct ipr_resource_entry *res;
+
+	list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
+		if ((res->cfgte.res_addr.bus == starget->channel) &&
+		    (res->cfgte.res_addr.target == starget->id) &&
+		    (res->cfgte.res_addr.lun == 0)) {
+			return res;
+		}
+	}
+
+	return NULL;
+}
+
+static struct ata_port_info sata_port_info;
+
+/**
+ * ipr_target_alloc - Prepare for commands to a SCSI target
+ * @starget:	scsi target struct
+ *
+ * If the device is a SATA device, this function allocates an
+ * ATA port with libata, else it does nothing.
+ *
+ * Return value:
+ * 	0 on success / non-0 on failure
+ **/
+static int ipr_target_alloc(struct scsi_target *starget)
+{
+	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
+	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
+	struct ipr_sata_port *sata_port;
+	struct ata_port *ap;
+	struct ipr_resource_entry *res;
+	unsigned long lock_flags;
+
+	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+	res = ipr_find_starget(starget);
+	starget->hostdata = NULL;
+
+	if (res && ipr_is_gata(res)) {
+		spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+		sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
+		if (!sata_port)
+			return -ENOMEM;
+
+		ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
+		if (ap) {
+			spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+			sata_port->ioa_cfg = ioa_cfg;
+			sata_port->ap = ap;
+			sata_port->res = res;
+
+			res->sata_port = sata_port;
+			ap->private_data = sata_port;
+			starget->hostdata = sata_port;
+		} else {
+			kfree(sata_port);
+			return -ENOMEM;
+		}
+	}
+	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+
+	return 0;
+}
+
+/**
+ * ipr_target_destroy - Destroy a SCSI target
+ * @starget:	scsi target struct
+ *
+ * If the device was a SATA device, this function frees the libata
+ * ATA port, else it does nothing.
+ *
+ **/
+static void ipr_target_destroy(struct scsi_target *starget)
+{
+	struct ipr_sata_port *sata_port = starget->hostdata;
+
+	if (sata_port) {
+		starget->hostdata = NULL;
+		ata_sas_port_destroy(sata_port->ap);
+		kfree(sata_port);
+	}
+}
+
+/**
+ * ipr_find_sdev - Find device based on bus/target/lun.
+ * @sdev:	scsi device struct
+ *
+ * Return value:
+ * 	resource entry pointer if found / NULL if not found
+ **/
+static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
+{
+	struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
+	struct ipr_resource_entry *res;
+
+	list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
+		if ((res->cfgte.res_addr.bus == sdev->channel) &&
+		    (res->cfgte.res_addr.target == sdev->id) &&
+		    (res->cfgte.res_addr.lun == sdev->lun))
+			return res;
+	}
+
+	return NULL;
+}
+
+/**
  * ipr_slave_destroy - Unconfigure a SCSI device
  * @sdev:	scsi device struct
  *
···
 	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 	res = (struct ipr_resource_entry *) sdev->hostdata;
 	if (res) {
+		if (res->sata_port)
+			ata_port_disable(res->sata_port->ap);
 		sdev->hostdata = NULL;
 		res->sdev = NULL;
+		res->sata_port = NULL;
 	}
 	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 }
···
 		}
 		if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
 			sdev->allow_restart = 1;
-		scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
+		if (ipr_is_gata(res) && res->sata_port) {
+			scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
+			ata_sas_slave_configure(sdev, res->sata_port->ap);
+		} else {
+			scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
+		}
 	}
 	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 	return 0;
+}
+
+/**
+ * ipr_ata_slave_alloc - Prepare for commands to a SATA device
+ * @sdev:	scsi device struct
+ *
+ * This function initializes an ATA port so that future commands
+ * sent through queuecommand will work.
+ *
+ * Return value:
+ * 	0 on success
+ **/
+static int ipr_ata_slave_alloc(struct scsi_device *sdev)
+{
+	struct ipr_sata_port *sata_port = NULL;
+	int rc = -ENXIO;
+
+	ENTER;
+	if (sdev->sdev_target)
+		sata_port = sdev->sdev_target->hostdata;
+	if (sata_port)
+		rc = ata_sas_port_init(sata_port->ap);
+	if (rc)
+		ipr_slave_destroy(sdev);
+
+	LEAVE;
+	return rc;
 }
 
 /**
···
 
 	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 
-	list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
-		if ((res->cfgte.res_addr.bus == sdev->channel) &&
-		    (res->cfgte.res_addr.target == sdev->id) &&
-		    (res->cfgte.res_addr.lun == sdev->lun)) {
-			res->sdev = sdev;
-			res->add_to_ml = 0;
-			res->in_erp = 0;
-			sdev->hostdata = res;
-			if (!ipr_is_naca_model(res))
-				res->needs_sync_complete = 1;
-			rc = 0;
-			break;
+	res = ipr_find_sdev(sdev);
+	if (res) {
+		res->sdev = sdev;
+		res->add_to_ml = 0;
+		res->in_erp = 0;
+		sdev->hostdata = res;
+		if (!ipr_is_naca_model(res))
+			res->needs_sync_complete = 1;
+		rc = 0;
+		if (ipr_is_gata(res)) {
+			spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+			return ipr_ata_slave_alloc(sdev);
 		}
 	}
 
···
  * This function issues a device reset to the affected device.
  * If the device is a SCSI device, a LUN reset will be sent
  * to the device first. If that does not work, a target reset
- * will be sent.
+ * will be sent. If the device is a SATA device, a PHY reset will
+ * be sent.
  *
  * Return value:
  *	0 on success / non-zero on failure
···
 	struct ipr_cmnd *ipr_cmd;
 	struct ipr_ioarcb *ioarcb;
 	struct ipr_cmd_pkt *cmd_pkt;
+	struct ipr_ioarcb_ata_regs *regs;
 	u32 ioasc;
 
 	ENTER;
 	ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
 	ioarcb = &ipr_cmd->ioarcb;
 	cmd_pkt = &ioarcb->cmd_pkt;
+	regs = &ioarcb->add_data.u.regs;
 
 	ioarcb->res_handle = res->cfgte.res_handle;
 	cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
 	cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
+	if (ipr_is_gata(res)) {
+		cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
+		ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
+		regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
+	}
 
 	ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
 	ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
 	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
+	if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
+		memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
+		       sizeof(struct ipr_ioasa_gata));
 
 	LEAVE;
 	return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
+}
+
+/**
+ * ipr_sata_reset - Reset the SATA port
+ * @ap:		SATA port to reset
+ * @classes:	class of the attached device
+ *
+ * This function issues a SATA phy reset to the affected ATA port.
+ *
+ * Return value:
+ *	0 on success / non-zero on failure
+ **/
+static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
+{
+	struct ipr_sata_port *sata_port = ap->private_data;
+	struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+	struct ipr_resource_entry *res;
+	unsigned long lock_flags = 0;
+	int rc = -ENXIO;
+
+	ENTER;
+	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
+	res = sata_port->res;
+	if (res) {
+		rc = ipr_device_reset(ioa_cfg, res);
+		switch(res->cfgte.proto) {
+		case IPR_PROTO_SATA:
+		case IPR_PROTO_SAS_STP:
+			*classes = ATA_DEV_ATA;
+			break;
+		case IPR_PROTO_SATA_ATAPI:
+		case IPR_PROTO_SAS_STP_ATAPI:
+			*classes = ATA_DEV_ATAPI;
+			break;
+		default:
+			*classes = ATA_DEV_UNKNOWN;
+			break;
+		};
+	}
+
+	spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
+	LEAVE;
+	return rc;
 }
 
 /**
···
 	struct ipr_cmnd *ipr_cmd;
 	struct ipr_ioa_cfg *ioa_cfg;
 	struct ipr_resource_entry *res;
-	int rc;
+	struct ata_port *ap;
+	int rc = 0;
 
 	ENTER;
 	ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
···
 
 	res->resetting_device = 1;
 	scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
-	rc = ipr_device_reset(ioa_cfg, res);
+
+	if (ipr_is_gata(res) && res->sata_port) {
+		ap = res->sata_port->ap;
+		spin_unlock_irq(scsi_cmd->device->host->host_lock);
+		ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
+		spin_lock_irq(scsi_cmd->device->host->host_lock);
+	} else
+		rc = ipr_device_reset(ioa_cfg, res);
 	res->resetting_device = 0;
 
 	LEAVE;
···
 		return 0;
 	}
 
+	if (ipr_is_gata(res) && res->sata_port)
+		return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
+
 	ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
 	ioarcb = &ipr_cmd->ioarcb;
 	list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
···
 }
 
 /**
+ * ipr_ioctl - IOCTL handler
+ * @sdev:	scsi device struct
+ * @cmd:	IOCTL cmd
+ * @arg:	IOCTL arg
+ *
+ * Return value:
+ * 	0 on success / other on failure
+ **/
+int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
+{
+	struct ipr_resource_entry *res;
+
+	res = (struct ipr_resource_entry *)sdev->hostdata;
+	if (res && ipr_is_gata(res))
+		return ata_scsi_ioctl(sdev, cmd, arg);
+
+	return -EINVAL;
+}
+
+/**
  * ipr_info - Get information about the card/driver
  * @scsi_host:	scsi host struct
  *
···
 	return buffer;
 }
 
+/**
+ * ipr_scsi_timed_out - Handle scsi command timeout
+ * @scsi_cmd:	scsi command struct
+ *
+ * Return value:
+ * 	EH_NOT_HANDLED
+ **/
+enum scsi_eh_timer_return ipr_scsi_timed_out(struct scsi_cmnd *scsi_cmd)
+{
+	struct ipr_ioa_cfg *ioa_cfg;
+	struct ipr_cmnd *ipr_cmd;
+	unsigned long flags;
+
+	ENTER;
+	spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
+	ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
+
+	list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
+		if (ipr_cmd->qc && ipr_cmd->qc->scsicmd == scsi_cmd) {
+			ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
+			ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
+			break;
+		}
+	}
+
+	spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
+	LEAVE;
+	return EH_NOT_HANDLED;
+}
+
+static struct scsi_transport_template ipr_transport_template = {
+	.eh_timed_out = ipr_scsi_timed_out
+};
+
 static struct scsi_host_template driver_template = {
 	.module = THIS_MODULE,
 	.name = "IPR",
 	.info = ipr_ioa_info,
+	.ioctl = ipr_ioctl,
 	.queuecommand = ipr_queuecommand,
 	.eh_abort_handler = ipr_eh_abort,
 	.eh_device_reset_handler = ipr_eh_dev_reset,
···
 	.slave_alloc = ipr_slave_alloc,
 	.slave_configure = ipr_slave_configure,
 	.slave_destroy = ipr_slave_destroy,
+	.target_alloc = ipr_target_alloc,
+	.target_destroy = ipr_target_destroy,
 	.change_queue_depth = ipr_change_queue_depth,
 	.change_queue_type = ipr_change_queue_type,
 	.bios_param = ipr_biosparam,
···
 	.shost_attrs = ipr_ioa_attrs,
 	.sdev_attrs = ipr_dev_attrs,
 	.proc_name = IPR_NAME
+};
+
+/**
+ * ipr_ata_phy_reset - libata phy_reset handler
+ * @ap:		ata port to reset
+ *
+ **/
+static void ipr_ata_phy_reset(struct ata_port *ap)
+{
+	unsigned long flags;
+	struct ipr_sata_port *sata_port = ap->private_data;
+	struct ipr_resource_entry *res = sata_port->res;
+	struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+	int rc;
+
+	ENTER;
+	spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
+	while(ioa_cfg->in_reset_reload) {
+		spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
+		wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
+		spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
+	}
+
+	if (!ioa_cfg->allow_cmds)
+		goto out_unlock;
+
+	rc = ipr_device_reset(ioa_cfg, res);
+
+	if (rc) {
+		ap->ops->port_disable(ap);
+		goto out_unlock;
+	}
+
+	switch(res->cfgte.proto) {
+	case IPR_PROTO_SATA:
+	case IPR_PROTO_SAS_STP:
+		ap->device[0].class = ATA_DEV_ATA;
+		break;
+	case IPR_PROTO_SATA_ATAPI:
+	case IPR_PROTO_SAS_STP_ATAPI:
+		ap->device[0].class = ATA_DEV_ATAPI;
+		break;
+	default:
+		ap->device[0].class = ATA_DEV_UNKNOWN;
+		ap->ops->port_disable(ap);
+		break;
+	};
+
+out_unlock:
+	spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
+	LEAVE;
+}
+
+/**
+ * ipr_ata_post_internal - Cleanup after an internal command
+ * @qc:	ATA queued command
+ *
+ * Return value:
+ * 	none
+ **/
+static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
+{
+	struct ipr_sata_port *sata_port = qc->ap->private_data;
+	struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+	struct ipr_cmnd *ipr_cmd;
+	unsigned long flags;
+
+	spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
+	list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
+		if (ipr_cmd->qc == qc) {
+			ipr_device_reset(ioa_cfg, sata_port->res);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
+}
+
+/**
+ * ipr_tf_read - Read the current ATA taskfile for the ATA port
+ * @ap:	ATA port
+ * @tf:	destination ATA taskfile
+ *
+ * Return value:
+ * 	none
+ **/
+static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
+{
+	struct ipr_sata_port *sata_port = ap->private_data;
+	struct ipr_ioasa_gata *g = &sata_port->ioasa;
+
+	tf->feature = g->error;
+	tf->nsect = g->nsect;
+	tf->lbal = g->lbal;
+	tf->lbam = g->lbam;
+	tf->lbah = g->lbah;
+	tf->device = g->device;
+	tf->command = g->status;
+	tf->hob_nsect = g->hob_nsect;
+	tf->hob_lbal = g->hob_lbal;
+	tf->hob_lbam = g->hob_lbam;
+	tf->hob_lbah = g->hob_lbah;
+	tf->ctl = g->alt_status;
+}
+
+/**
+ * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
+ * @regs:	destination
+ * @tf:	source ATA taskfile
+ *
+ * Return value:
+ * 	none
+ **/
+static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
+			     struct ata_taskfile *tf)
+{
+	regs->feature = tf->feature;
+	regs->nsect = tf->nsect;
+	regs->lbal = tf->lbal;
+	regs->lbam = tf->lbam;
+	regs->lbah = tf->lbah;
+	regs->device = tf->device;
+	regs->command = tf->command;
+	regs->hob_feature = tf->hob_feature;
+	regs->hob_nsect = tf->hob_nsect;
+	regs->hob_lbal = tf->hob_lbal;
+	regs->hob_lbam = tf->hob_lbam;
+	regs->hob_lbah = tf->hob_lbah;
+	regs->ctl = tf->ctl;
+}
+
+/**
+ * ipr_sata_done - done function for SATA commands
+ * @ipr_cmd:	ipr command struct
+ *
+ * This function is invoked by the interrupt handler for
+ * ops generated by the SCSI mid-layer to SATA devices
+ *
+ * Return value:
+ * 	none
+ **/
+static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
+{
+	struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
+	struct ata_queued_cmd *qc = ipr_cmd->qc;
+	struct ipr_sata_port *sata_port = qc->ap->private_data;
+	struct ipr_resource_entry *res = sata_port->res;
+	u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
+
+	memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
+	       sizeof(struct ipr_ioasa_gata));
+	ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
+
+	if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
+		scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
+					 res->cfgte.res_addr.target);
+
+	if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
+		qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
+	else
+		qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
+	list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
+	ata_qc_complete(qc);
+}
+
+/**
+ * ipr_build_ata_ioadl - Build an ATA scatter/gather list
+ * @ipr_cmd:	ipr command struct
+ * @qc:		ATA queued command
+ *
+ **/
+static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
+				struct ata_queued_cmd *qc)
+{
+	u32 ioadl_flags = 0;
+	struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
+	struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
+	int len = qc->nbytes + qc->pad_len;
+	struct scatterlist *sg;
+
+	if (len == 0)
+		return;
+
+	if (qc->dma_dir == DMA_TO_DEVICE) {
+		ioadl_flags = IPR_IOADL_FLAGS_WRITE;
+		ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
+		ioarcb->write_data_transfer_length = cpu_to_be32(len);
+		ioarcb->write_ioadl_len =
+			cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
+	} else if (qc->dma_dir == DMA_FROM_DEVICE) {
+		ioadl_flags = IPR_IOADL_FLAGS_READ;
+		ioarcb->read_data_transfer_length = cpu_to_be32(len);
+		ioarcb->read_ioadl_len =
+			cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
+	}
+
+	ata_for_each_sg(sg, qc) {
+		ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
+		ioadl->address = cpu_to_be32(sg_dma_address(sg));
+		if (ata_sg_is_last(sg, qc))
+			ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
+		else
+			ioadl++;
+	}
+}
+
+/**
+ * ipr_qc_issue - Issue a SATA qc to a device
+ * @qc:	queued command
+ *
+ * Return value:
+ * 	0 if success
+ **/
+static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
+{
+	struct ata_port *ap = qc->ap;
+	struct ipr_sata_port *sata_port = ap->private_data;
+	struct ipr_resource_entry *res = sata_port->res;
+	struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
+	struct ipr_cmnd *ipr_cmd;
+	struct ipr_ioarcb *ioarcb;
+	struct ipr_ioarcb_ata_regs *regs;
+
+	if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
+		return -EIO;
+
+	ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
+	ioarcb = &ipr_cmd->ioarcb;
+	regs = &ioarcb->add_data.u.regs;
+
+	memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
+	ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
+
+	list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
+	ipr_cmd->qc = qc;
+	ipr_cmd->done = ipr_sata_done;
+	ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
+	ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
+	ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
+	ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
+	ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
+
+	ipr_build_ata_ioadl(ipr_cmd, qc);
+	regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
+	ipr_copy_sata_tf(regs, &qc->tf);
+	memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
+	ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
+
+	switch (qc->tf.protocol) {
+	case ATA_PROT_NODATA:
+	case ATA_PROT_PIO:
+		break;
+
+	case ATA_PROT_DMA:
+		regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
+		break;
+
+	case ATA_PROT_ATAPI:
+	case ATA_PROT_ATAPI_NODATA:
+		regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
+		break;
+
+	case ATA_PROT_ATAPI_DMA:
+		regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
+		regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
+		break;
+
+	default:
+		WARN_ON(1);
+		return -1;
+	}
+
+	mb();
+	writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
+	       ioa_cfg->regs.ioarrin_reg);
+	return 0;
+}
+
+/**
+ * ipr_ata_check_status - Return last ATA status
+ * @ap:	ATA port
+ *
+ * Return value:
+ * 	ATA status
+ **/
+static u8 ipr_ata_check_status(struct ata_port *ap)
+{
+	struct ipr_sata_port *sata_port = ap->private_data;
+	return sata_port->ioasa.status;
+}
+
+/**
+ * ipr_ata_check_altstatus - Return last ATA altstatus
+ * @ap:	ATA port
+ *
+ * Return value:
+ * 	Alt ATA status
+ **/
+static u8 ipr_ata_check_altstatus(struct ata_port *ap)
+{
+	struct ipr_sata_port *sata_port = ap->private_data;
+	return sata_port->ioasa.alt_status;
+}
+
+static struct ata_port_operations ipr_sata_ops = {
+	.port_disable = ata_port_disable,
+	.check_status = ipr_ata_check_status,
+	.check_altstatus = ipr_ata_check_altstatus,
+	.dev_select = ata_noop_dev_select,
+	.phy_reset = ipr_ata_phy_reset,
+	.post_internal_cmd = ipr_ata_post_internal,
+	.tf_read = ipr_tf_read,
+	.qc_prep = ata_noop_qc_prep,
+	.qc_issue = ipr_qc_issue,
+	.port_start = ata_sas_port_start,
+	.port_stop = ata_sas_port_stop
+};
+
+static struct ata_port_info sata_port_info = {
+	.flags	= ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
+	ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
+	.pio_mask	= 0x10, /* pio4 */
+	.mwdma_mask = 0x07,
+	.udma_mask	= 0x7f, /* udma0-6 */
+	.port_ops	= &ipr_sata_ops
 };
 
 #ifdef CONFIG_PPC_PSERIES
···
 
 	ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
 	memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
+	host->transportt = &ipr_transport_template;
+	ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
+		      sata_port_info.flags, &ipr_sata_ops);
 
 	ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
 

drivers/scsi/ipr.h

···
 
 #include <linux/types.h>
 #include <linux/completion.h>
+#include <linux/libata.h>
 #include <linux/list.h>
 #include <linux/kref.h>
 #include <scsi/scsi.h>
···
 /*
  * Literals
  */
-#define IPR_DRIVER_VERSION "2.1.4"
-#define IPR_DRIVER_DATE "(August 2, 2006)"
+#define IPR_DRIVER_VERSION "2.2.0"
+#define IPR_DRIVER_DATE "(September 25, 2006)"
 
 /*
  * IPR_MAX_CMD_PER_LUN: This defines the maximum number of outstanding
···
 	u32 max_xfer_rate;
 };
 
+struct ipr_sata_port {
+	struct ipr_ioa_cfg *ioa_cfg;
+	struct ata_port *ap;
+	struct ipr_resource_entry *res;
+	struct ipr_ioasa_gata ioasa;
+};
+
 struct ipr_resource_entry {
 	struct ipr_config_table_entry cfgte;
 	u8 needs_sync_complete:1;
···
 	u8 resetting_device:1;
 
 	struct scsi_device *sdev;
+	struct ipr_sata_port *sata_port;
 	struct list_head queue;
 };
 
···
 	u32 time;
 
 	u8 op_code;
+	u8 ata_op_code;
 	u8 type;
 #define IPR_TRACE_START			0x00
 #define IPR_TRACE_FINISH		0xff
-	u16 cmd_index;
+	u8 cmd_index;
 
 	__be32 res_handle;
 	union {
···
 
 	struct ipr_cmnd *reset_cmd;
 
+	struct ata_host ata_host;
 	char ipr_cmd_label[8];
 #define IPR_CMD_LABEL		"ipr_cmnd"
 	struct ipr_cmnd *ipr_cmnd_list[IPR_NUM_CMD_BLKS];
···
 	struct ipr_ioadl_desc ioadl[IPR_NUM_IOADL_ENTRIES];
 	struct list_head queue;
 	struct scsi_cmnd *scsi_cmd;
+	struct ata_queued_cmd *qc;
 	struct completion completion;
 	struct timer_list timer;
 	void (*done) (struct ipr_cmnd *);