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[SCSI] ipr: Support attaching SATA devices

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Adds support to attach SATA devices to ipr SAS adapters.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Brian King 2006-09-25 12:39:20 -05:00 committed by James Bottomley
parent d7694f8c0b
commit 35a39691e4
3 changed files with 681 additions and 22 deletions
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2
drivers/scsi/Kconfig
View File

@ -1014,7 +1014,7 @@ config SCSI_SYM53C8XX_MMIO
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.

683
drivers/scsi/ipr.c
View File

@ -70,6 +70,7 @@
#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>
@ -78,6 +79,7 @@
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_transport.h>
#include "ipr.h"
/*
@ -199,6 +201,8 @@ struct ipr_error_table_t ipr_error_table[] = {
"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,
@ -261,6 +265,8 @@ struct ipr_error_table_t ipr_error_table[] = {
"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,
@ -273,6 +279,8 @@ struct ipr_error_table_t ipr_error_table[] = {
"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,
@ -453,7 +461,8 @@ static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
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;
}
@ -480,8 +489,10 @@ static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
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;
}
@ -625,6 +636,28 @@ static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
return 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
@ -669,6 +702,8 @@ static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
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);
@ -825,6 +860,7 @@ static void ipr_init_res_entry(struct ipr_resource_entry *res)
res->del_from_ml = 0;
res->resetting_device = 0;
res->sdev = NULL;
res->sata_port = NULL;
}
/**
@ -1316,7 +1352,7 @@ static u32 ipr_get_error(u32 ioasc)
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;
@ -3051,6 +3087,17 @@ static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { 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;
}
@ -3165,6 +3212,122 @@ static int ipr_biosparam(struct scsi_device *sdev,
return 0;
}
/**
* 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
@ -3183,8 +3346,11 @@ static void ipr_slave_destroy(struct scsi_device *sdev)
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);
}
@ -3219,12 +3385,44 @@ static int ipr_slave_configure(struct scsi_device *sdev)
}
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;
}
/**
* ipr_slave_alloc - Prepare for commands to a device.
* @sdev: scsi device struct
@ -3248,18 +3446,18 @@ static int ipr_slave_alloc(struct scsi_device *sdev)
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);
}
}
@ -3314,7 +3512,8 @@ static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
* 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
@ -3325,25 +3524,78 @@ static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
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;
}
/**
* ipr_eh_dev_reset - Reset the device
* @scsi_cmd: scsi command struct
@ -3360,7 +3612,8 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
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;
@ -3388,7 +3641,14 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
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;
@ -4300,6 +4560,9 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
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);
@ -4344,6 +4607,26 @@ static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
return 0;
}
/**
* 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
@ -4366,10 +4649,45 @@ static const char * ipr_ioa_info(struct Scsi_Host *host)
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,
@ -4377,6 +4695,8 @@ static struct scsi_host_template driver_template = {
.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,
@ -4391,6 +4711,330 @@ static struct scsi_host_template driver_template = {
.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
static const u16 ipr_blocked_processors[] = {
PV_NORTHSTAR,
@ -6374,6 +7018,9 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
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);

18
drivers/scsi/ipr.h
View File

@ -28,6 +28,7 @@
#include <linux/types.h>
#include <linux/completion.h>
#include <linux/libata.h>
#include <linux/list.h>
#include <linux/kref.h>
#include <scsi/scsi.h>
@ -36,8 +37,8 @@
/*
* 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
@ -849,6 +850,13 @@ struct ipr_bus_attributes {
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;
@ -858,6 +866,7 @@ struct ipr_resource_entry {
u8 resetting_device:1;
struct scsi_device *sdev;
struct ipr_sata_port *sata_port;
struct list_head queue;
};
@ -928,10 +937,11 @@ struct ipr_trace_entry {
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 {
@ -1073,6 +1083,7 @@ struct ipr_ioa_cfg {
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];
@ -1085,6 +1096,7 @@ struct ipr_cmnd {
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 *);