1 files changed, 84 insertions, 10 deletions

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index e1a395b438ee..4d3b704ede1c 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,
@@ -362,10 +372,9 @@ static struct ata_port_operations sas_sata_ops = {
 };
 
 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 | ATA_FLAG_NCQ,
-        .pio_mask = 0x1f, /* PIO0-4 */
-        .mwdma_mask = 0x07, /* MWDMA0-2 */
+        .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ,
+        .pio_mask = ATA_PIO4,
+        .mwdma_mask = ATA_MWDMA2,
         .udma_mask = ATA_UDMA6,
         .port_ops = &sas_sata_ops
 };
@@ -781,3 +790,68 @@ 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;
+}