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-rw-r--r--drivers/scsi/libsas/sas_ata.c87
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c14
-rw-r--r--include/scsi/sas_ata.h22
3 files changed, 115 insertions, 8 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index e1a395b438ee..8f56d5fbf6ec 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -238,37 +238,43 @@ static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc)
return true;
}
-static void sas_ata_phy_reset(struct ata_port *ap)
+static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline)
{
+ struct ata_port *ap = link->ap;
struct domain_device *dev = ap->private_data;
struct sas_internal *i =
to_sas_internal(dev->port->ha->core.shost->transportt);
int res = TMF_RESP_FUNC_FAILED;
+ int ret = 0;
if (i->dft->lldd_I_T_nexus_reset)
res = i->dft->lldd_I_T_nexus_reset(dev);
- if (res != TMF_RESP_FUNC_COMPLETE)
+ if (res != TMF_RESP_FUNC_COMPLETE) {
SAS_DPRINTK("%s: Unable to reset I T nexus?\n", __func__);
+ ret = -EAGAIN;
+ }
switch (dev->sata_dev.command_set) {
case ATA_COMMAND_SET:
SAS_DPRINTK("%s: Found ATA device.\n", __func__);
- ap->link.device[0].class = ATA_DEV_ATA;
+ *class = ATA_DEV_ATA;
break;
case ATAPI_COMMAND_SET:
SAS_DPRINTK("%s: Found ATAPI device.\n", __func__);
- ap->link.device[0].class = ATA_DEV_ATAPI;
+ *class = ATA_DEV_ATAPI;
break;
default:
SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
__func__,
dev->sata_dev.command_set);
- ap->link.device[0].class = ATA_DEV_UNKNOWN;
+ *class = ATA_DEV_UNKNOWN;
break;
}
ap->cbl = ATA_CBL_SATA;
+ return ret;
}
static void sas_ata_post_internal(struct ata_queued_cmd *qc)
@@ -349,7 +355,11 @@ static int sas_ata_scr_read(struct ata_link *link, unsigned int sc_reg_in,
}
static struct ata_port_operations sas_sata_ops = {
- .phy_reset = sas_ata_phy_reset,
+ .prereset = ata_std_prereset,
+ .softreset = NULL,
+ .hardreset = sas_ata_hard_reset,
+ .postreset = ata_std_postreset,
+ .error_handler = ata_std_error_handler,
.post_internal_cmd = sas_ata_post_internal,
.qc_defer = ata_std_qc_defer,
.qc_prep = ata_noop_qc_prep,
@@ -781,3 +791,68 @@ int sas_discover_sata(struct domain_device *dev)
return res;
}
+
+void sas_ata_strategy_handler(struct Scsi_Host *shost)
+{
+ struct scsi_device *sdev;
+
+ shost_for_each_device(sdev, shost) {
+ struct domain_device *ddev = sdev_to_domain_dev(sdev);
+ struct ata_port *ap = ddev->sata_dev.ap;
+
+ if (!dev_is_sata(ddev))
+ continue;
+
+ ata_port_printk(ap, KERN_DEBUG, "sas eh calling libata port error handler");
+ ata_scsi_port_error_handler(shost, ap);
+ }
+}
+
+int sas_ata_timed_out(struct scsi_cmnd *cmd, struct sas_task *task,
+ enum blk_eh_timer_return *rtn)
+{
+ struct domain_device *ddev = cmd_to_domain_dev(cmd);
+
+ if (!dev_is_sata(ddev) || task)
+ return 0;
+
+ /* we're a sata device with no task, so this must be a libata
+ * eh timeout. Ideally should hook into libata timeout
+ * handling, but there's no point, it just wants to activate
+ * the eh thread */
+ *rtn = BLK_EH_NOT_HANDLED;
+ return 1;
+}
+
+int sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
+ struct list_head *done_q)
+{
+ int rtn = 0;
+ struct scsi_cmnd *cmd, *n;
+ struct ata_port *ap;
+
+ do {
+ LIST_HEAD(sata_q);
+
+ ap = NULL;
+
+ list_for_each_entry_safe(cmd, n, work_q, eh_entry) {
+ struct domain_device *ddev = cmd_to_domain_dev(cmd);
+
+ if (!dev_is_sata(ddev) || TO_SAS_TASK(cmd))
+ continue;
+ if(ap && ap != ddev->sata_dev.ap)
+ continue;
+ ap = ddev->sata_dev.ap;
+ rtn = 1;
+ list_move(&cmd->eh_entry, &sata_q);
+ }
+
+ if (!list_empty(&sata_q)) {
+ ata_port_printk(ap, KERN_DEBUG,"sas eh calling libata cmd error handler\n");
+ ata_scsi_cmd_error_handler(shost, ap, &sata_q);
+ }
+ } while (ap);
+
+ return rtn;
+}
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 9a7aaf5f1311..67758ea8eb7f 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -663,11 +663,16 @@ void sas_scsi_recover_host(struct Scsi_Host *shost)
* scsi_unjam_host does, but we skip scsi_eh_abort_cmds because any
* command we see here has no sas_task and is thus unknown to the HA.
*/
- if (!scsi_eh_get_sense(&eh_work_q, &ha->eh_done_q))
- scsi_eh_ready_devs(shost, &eh_work_q, &ha->eh_done_q);
+ if (!sas_ata_eh(shost, &eh_work_q, &ha->eh_done_q))
+ if (!scsi_eh_get_sense(&eh_work_q, &ha->eh_done_q))
+ scsi_eh_ready_devs(shost, &eh_work_q, &ha->eh_done_q);
out:
+ /* now link into libata eh --- if we have any ata devices */
+ sas_ata_strategy_handler(shost);
+
scsi_eh_flush_done_q(&ha->eh_done_q);
+
SAS_DPRINTK("--- Exit %s\n", __func__);
return;
}
@@ -676,6 +681,11 @@ enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd)
{
struct sas_task *task = TO_SAS_TASK(cmd);
unsigned long flags;
+ enum blk_eh_timer_return rtn;
+
+ if (sas_ata_timed_out(cmd, task, &rtn))
+ return rtn;
+
if (!task) {
cmd->request->timeout /= 2;
diff --git a/include/scsi/sas_ata.h b/include/scsi/sas_ata.h
index c583193ae929..9c159f74c6d0 100644
--- a/include/scsi/sas_ata.h
+++ b/include/scsi/sas_ata.h
@@ -39,6 +39,11 @@ int sas_ata_init_host_and_port(struct domain_device *found_dev,
struct scsi_target *starget);
void sas_ata_task_abort(struct sas_task *task);
+void sas_ata_strategy_handler(struct Scsi_Host *shost);
+int sas_ata_timed_out(struct scsi_cmnd *cmd, struct sas_task *task,
+ enum blk_eh_timer_return *rtn);
+int sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
+ struct list_head *done_q);
#else
@@ -55,6 +60,23 @@ static inline int sas_ata_init_host_and_port(struct domain_device *found_dev,
static inline void sas_ata_task_abort(struct sas_task *task)
{
}
+
+static inline void sas_ata_strategy_handler(struct Scsi_Host *shost)
+{
+}
+
+static inline int sas_ata_timed_out(struct scsi_cmnd *cmd,
+ struct sas_task *task,
+ enum blk_eh_timer_return *rtn)
+{
+ return 0;
+}
+static inline int sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q,
+ struct list_head *done_q)
+{
+ return 0;
+}
+
#endif
#endif /* _SAS_ATA_H_ */
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