Pull sony into release branch
[pandora-kernel.git] / drivers / ata / libata-eh.c
index 02b2b27..52c85af 100644 (file)
@@ -332,7 +332,7 @@ void ata_scsi_error(struct Scsi_Host *host)
        if (ap->pflags & ATA_PFLAG_LOADING)
                ap->pflags &= ~ATA_PFLAG_LOADING;
        else if (ap->pflags & ATA_PFLAG_SCSI_HOTPLUG)
-               queue_work(ata_aux_wq, &ap->hotplug_task);
+               queue_delayed_work(ata_aux_wq, &ap->hotplug_task, 0);
 
        if (ap->pflags & ATA_PFLAG_RECOVERED)
                ata_port_printk(ap, KERN_INFO, "EH complete\n");
@@ -1136,19 +1136,21 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
                break;
 
        case ATA_DEV_ATAPI:
-               tmp = atapi_eh_request_sense(qc->dev,
-                                            qc->scsicmd->sense_buffer);
-               if (!tmp) {
-                       /* ATA_QCFLAG_SENSE_VALID is used to tell
-                        * atapi_qc_complete() that sense data is
-                        * already valid.
-                        *
-                        * TODO: interpret sense data and set
-                        * appropriate err_mask.
-                        */
-                       qc->flags |= ATA_QCFLAG_SENSE_VALID;
-               } else
-                       qc->err_mask |= tmp;
+               if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
+                       tmp = atapi_eh_request_sense(qc->dev,
+                                                    qc->scsicmd->sense_buffer);
+                       if (!tmp) {
+                               /* ATA_QCFLAG_SENSE_VALID is used to
+                                * tell atapi_qc_complete() that sense
+                                * data is already valid.
+                                *
+                                * TODO: interpret sense data and set
+                                * appropriate err_mask.
+                                */
+                               qc->flags |= ATA_QCFLAG_SENSE_VALID;
+                       } else
+                               qc->err_mask |= tmp;
+               }
        }
 
        if (qc->err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT | AC_ERR_ATA_BUS))
@@ -1433,16 +1435,34 @@ static void ata_eh_report(struct ata_port *ap)
        }
 
        for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
+               static const char *dma_str[] = {
+                       [DMA_BIDIRECTIONAL]     = "bidi",
+                       [DMA_TO_DEVICE]         = "out",
+                       [DMA_FROM_DEVICE]       = "in",
+                       [DMA_NONE]              = "",
+               };
                struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
+               struct ata_taskfile *cmd = &qc->tf, *res = &qc->result_tf;
 
                if (!(qc->flags & ATA_QCFLAG_FAILED) || !qc->err_mask)
                        continue;
 
-               ata_dev_printk(qc->dev, KERN_ERR, "tag %d cmd 0x%x "
-                              "Emask 0x%x stat 0x%x err 0x%x (%s)\n",
-                              qc->tag, qc->tf.command, qc->err_mask,
-                              qc->result_tf.command, qc->result_tf.feature,
-                              ata_err_string(qc->err_mask));
+               ata_dev_printk(qc->dev, KERN_ERR,
+                       "cmd %02x/%02x:%02x:%02x:%02x:%02x/%02x:%02x:%02x:%02x:%02x/%02x "
+                       "tag %d cdb 0x%x data %u %s\n         "
+                       "res %02x/%02x:%02x:%02x:%02x:%02x/%02x:%02x:%02x:%02x:%02x/%02x "
+                       "Emask 0x%x (%s)\n",
+                       cmd->command, cmd->feature, cmd->nsect,
+                       cmd->lbal, cmd->lbam, cmd->lbah,
+                       cmd->hob_feature, cmd->hob_nsect,
+                       cmd->hob_lbal, cmd->hob_lbam, cmd->hob_lbah,
+                       cmd->device, qc->tag, qc->cdb[0], qc->nbytes,
+                       dma_str[qc->dma_dir],
+                       res->command, res->feature, res->nsect,
+                       res->lbal, res->lbam, res->lbah,
+                       res->hob_feature, res->hob_nsect,
+                       res->hob_lbal, res->hob_lbam, res->hob_lbah,
+                       res->device, qc->err_mask, ata_err_string(qc->err_mask));
        }
 }
 
@@ -1634,11 +1654,14 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
        DPRINTK("ENTER\n");
 
        for (i = 0; i < ATA_MAX_DEVICES; i++) {
-               unsigned int action;
+               unsigned int action, readid_flags = 0;
 
                dev = &ap->device[i];
                action = ata_eh_dev_action(dev);
 
+               if (ehc->i.flags & ATA_EHI_DID_RESET)
+                       readid_flags |= ATA_READID_POSTRESET;
+
                if (action & ATA_EH_REVALIDATE && ata_dev_ready(dev)) {
                        if (ata_port_offline(ap)) {
                                rc = -EIO;
@@ -1646,13 +1669,17 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
                        }
 
                        ata_eh_about_to_do(ap, dev, ATA_EH_REVALIDATE);
-                       rc = ata_dev_revalidate(dev,
-                                       ehc->i.flags & ATA_EHI_DID_RESET);
+                       rc = ata_dev_revalidate(dev, readid_flags);
                        if (rc)
                                break;
 
                        ata_eh_done(ap, dev, ATA_EH_REVALIDATE);
 
+                       /* Configuration may have changed, reconfigure
+                        * transfer mode.
+                        */
+                       ehc->i.flags |= ATA_EHI_SETMODE;
+
                        /* schedule the scsi_rescan_device() here */
                        queue_work(ata_aux_wq, &(ap->scsi_rescan_task));
                } else if (dev->class == ATA_DEV_UNKNOWN &&
@@ -1660,18 +1687,35 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
                           ata_class_enabled(ehc->classes[dev->devno])) {
                        dev->class = ehc->classes[dev->devno];
 
-                       rc = ata_dev_read_id(dev, &dev->class, 1, dev->id);
-                       if (rc == 0)
-                               rc = ata_dev_configure(dev, 1);
+                       rc = ata_dev_read_id(dev, &dev->class, readid_flags,
+                                            dev->id);
+                       if (rc == 0) {
+                               ehc->i.flags |= ATA_EHI_PRINTINFO;
+                               rc = ata_dev_configure(dev);
+                               ehc->i.flags &= ~ATA_EHI_PRINTINFO;
+                       } else if (rc == -ENOENT) {
+                               /* IDENTIFY was issued to non-existent
+                                * device.  No need to reset.  Just
+                                * thaw and kill the device.
+                                */
+                               ata_eh_thaw_port(ap);
+                               dev->class = ATA_DEV_UNKNOWN;
+                               rc = 0;
+                       }
 
                        if (rc) {
                                dev->class = ATA_DEV_UNKNOWN;
                                break;
                        }
 
-                       spin_lock_irqsave(ap->lock, flags);
-                       ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
-                       spin_unlock_irqrestore(ap->lock, flags);
+                       if (ata_dev_enabled(dev)) {
+                               spin_lock_irqsave(ap->lock, flags);
+                               ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
+                               spin_unlock_irqrestore(ap->lock, flags);
+
+                               /* new device discovered, configure xfermode */
+                               ehc->i.flags |= ATA_EHI_SETMODE;
+                       }
                }
        }
 
@@ -1747,7 +1791,7 @@ static int ata_eh_suspend(struct ata_port *ap, struct ata_device **r_failed_dev)
                *r_failed_dev = dev;
 
        DPRINTK("EXIT\n");
-       return 0;
+       return rc;
 }
 
 /**
@@ -1930,6 +1974,10 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
 
                ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
 
+               /* collect port action mask recorded in dev actions */
+               ehc->i.action |= ehc->i.dev_action[i] & ~ATA_EH_PERDEV_MASK;
+               ehc->i.dev_action[i] &= ATA_EH_PERDEV_MASK;
+
                /* process hotplug request */
                if (dev->flags & ATA_DFLAG_DETACH)
                        ata_eh_detach_dev(dev);
@@ -1987,13 +2035,14 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
        if (rc)
                goto dev_fail;
 
-       /* configure transfer mode if the port has been reset */
-       if (ehc->i.flags & ATA_EHI_DID_RESET) {
+       /* configure transfer mode if necessary */
+       if (ehc->i.flags & ATA_EHI_SETMODE) {
                rc = ata_set_mode(ap, &dev);
                if (rc) {
                        down_xfermask = 1;
                        goto dev_fail;
                }
+               ehc->i.flags &= ~ATA_EHI_SETMODE;
        }
 
        /* suspend devices */