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-rw-r--r--drivers/scsi/ahci.c12
-rw-r--r--drivers/scsi/libata-core.c14
-rw-r--r--drivers/scsi/libata-scsi.c59
-rw-r--r--drivers/scsi/sata_mv.c12
-rw-r--r--drivers/scsi/sata_promise.c12
-rw-r--r--drivers/scsi/sata_sil24.c10
-rw-r--r--drivers/scsi/sata_sx4.c12
-rw-r--r--include/linux/libata.h3
8 files changed, 70 insertions, 64 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 0f6e4dd22901..5a6b23009897 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -672,19 +672,13 @@ static void ahci_eng_timeout(struct ata_port *ap)
ap->id);
} else {
ahci_restart_port(ap, readl(port_mmio + PORT_IRQ_STAT));
-
- /* hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
- qc->scsidone = scsi_finish_command;
qc->err_mask |= AC_ERR_TIMEOUT;
- ata_qc_complete(qc);
}
spin_unlock_irqrestore(&host_set->lock, flags);
+
+ if (qc)
+ ata_eh_qc_complete(qc);
}
static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index b29bf0dc948a..93ae2dcc837c 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -3449,14 +3449,6 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
spin_lock_irqsave(&host_set->lock, flags);
- /* hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
- qc->scsidone = scsi_finish_command;
-
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
@@ -3480,12 +3472,13 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
/* complete taskfile transaction */
qc->err_mask |= ac_err_mask(drv_stat);
- ata_qc_complete(qc);
break;
}
spin_unlock_irqrestore(&host_set->lock, flags);
+ ata_eh_qc_complete(qc);
+
DPRINTK("EXIT\n");
}
@@ -4422,6 +4415,7 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
INIT_WORK(&ap->packet_task, atapi_packet_task, ap);
INIT_WORK(&ap->pio_task, ata_pio_task, ap);
+ INIT_LIST_HEAD(&ap->eh_done_q);
for (i = 0; i < ATA_MAX_DEVICES; i++)
ap->device[i].devno = i;
@@ -5165,6 +5159,8 @@ EXPORT_SYMBOL_GPL(ata_dev_classify);
EXPORT_SYMBOL_GPL(ata_dev_id_string);
EXPORT_SYMBOL_GPL(ata_dev_config);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
+EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
+EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
EXPORT_SYMBOL_GPL(ata_timing_compute);
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 95e3c278dd43..ab6b53349d6f 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -738,17 +738,64 @@ int ata_scsi_error(struct Scsi_Host *host)
ap = (struct ata_port *) &host->hostdata[0];
ap->ops->eng_timeout(ap);
- /* TODO: this is per-command; when queueing is supported
- * this code will either change or move to a more
- * appropriate place
- */
- host->host_failed--;
- INIT_LIST_HEAD(&host->eh_cmd_q);
+ assert(host->host_failed == 0 && list_empty(&host->eh_cmd_q));
+
+ scsi_eh_flush_done_q(&ap->eh_done_q);
DPRINTK("EXIT\n");
return 0;
}
+static void ata_eh_scsidone(struct scsi_cmnd *scmd)
+{
+ /* nada */
+}
+
+static void __ata_eh_qc_complete(struct ata_queued_cmd *qc)
+{
+ struct ata_port *ap = qc->ap;
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ap->host_set->lock, flags);
+ qc->scsidone = ata_eh_scsidone;
+ ata_qc_complete(qc);
+ assert(!ata_tag_valid(qc->tag));
+ spin_unlock_irqrestore(&ap->host_set->lock, flags);
+
+ scsi_eh_finish_cmd(scmd, &ap->eh_done_q);
+}
+
+/**
+ * ata_eh_qc_complete - Complete an active ATA command from EH
+ * @qc: Command to complete
+ *
+ * Indicate to the mid and upper layers that an ATA command has
+ * completed. To be used from EH.
+ */
+void ata_eh_qc_complete(struct ata_queued_cmd *qc)
+{
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ scmd->retries = scmd->allowed;
+ __ata_eh_qc_complete(qc);
+}
+
+/**
+ * ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH
+ * @qc: Command to retry
+ *
+ * Indicate to the mid and upper layers that an ATA command
+ * should be retried. To be used from EH.
+ *
+ * SCSI midlayer limits the number of retries to scmd->allowed.
+ * This function might need to adjust scmd->retries for commands
+ * which get retried due to unrelated NCQ failures.
+ */
+void ata_eh_qc_retry(struct ata_queued_cmd *qc)
+{
+ __ata_eh_qc_complete(qc);
+}
+
/**
* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
* @qc: Storage for translated ATA taskfile
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 281223a0e45f..d9a554ca45c7 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1839,7 +1839,6 @@ static void mv_phy_reset(struct ata_port *ap)
static void mv_eng_timeout(struct ata_port *ap)
{
struct ata_queued_cmd *qc;
- unsigned long flags;
printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
DPRINTK("All regs @ start of eng_timeout\n");
@@ -1858,17 +1857,8 @@ static void mv_eng_timeout(struct ata_port *ap)
printk(KERN_ERR "ata%u: BUG: timeout without command\n",
ap->id);
} else {
- /* hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
- spin_lock_irqsave(&ap->host_set->lock, flags);
- qc->scsidone = scsi_finish_command;
qc->err_mask |= AC_ERR_TIMEOUT;
- ata_qc_complete(qc);
- spin_unlock_irqrestore(&ap->host_set->lock, flags);
+ ata_eh_qc_complete(qc);
}
}
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index bac36d5b7c3e..77ef646b0f92 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -400,21 +400,12 @@ static void pdc_eng_timeout(struct ata_port *ap)
goto out;
}
- /* hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
- qc->scsidone = scsi_finish_command;
-
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
case ATA_PROT_NODATA:
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
drv_stat = ata_wait_idle(ap);
qc->err_mask |= __ac_err_mask(drv_stat);
- ata_qc_complete(qc);
break;
default:
@@ -424,12 +415,13 @@ static void pdc_eng_timeout(struct ata_port *ap)
ap->id, qc->tf.command, drv_stat);
qc->err_mask |= ac_err_mask(drv_stat);
- ata_qc_complete(qc);
break;
}
out:
spin_unlock_irqrestore(&host_set->lock, flags);
+ if (qc)
+ ata_eh_qc_complete(qc);
DPRINTK("EXIT\n");
}
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 5a7a7b1d4add..7222fc7ff3fc 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -644,17 +644,9 @@ static void sil24_eng_timeout(struct ata_port *ap)
return;
}
- /*
- * hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
- qc->scsidone = scsi_finish_command;
qc->err_mask |= AC_ERR_TIMEOUT;
- ata_qc_complete(qc);
+ ata_eh_qc_complete(qc);
sil24_reset_controller(ap);
}
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index 3175c6bb4fec..9f992fbcf2e7 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -872,20 +872,11 @@ static void pdc_eng_timeout(struct ata_port *ap)
goto out;
}
- /* hack alert! We cannot use the supplied completion
- * function from inside the ->eh_strategy_handler() thread.
- * libata is the only user of ->eh_strategy_handler() in
- * any kernel, so the default scsi_done() assumes it is
- * not being called from the SCSI EH.
- */
- qc->scsidone = scsi_finish_command;
-
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
case ATA_PROT_NODATA:
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
- ata_qc_complete(qc);
break;
default:
@@ -895,12 +886,13 @@ static void pdc_eng_timeout(struct ata_port *ap)
ap->id, qc->tf.command, drv_stat);
qc->err_mask |= ac_err_mask(drv_stat);
- ata_qc_complete(qc);
break;
}
out:
spin_unlock_irqrestore(&host_set->lock, flags);
+ if (qc)
+ ata_eh_qc_complete(qc);
DPRINTK("EXIT\n");
}
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b1ea2f98bfbb..576788de962a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -398,6 +398,7 @@ struct ata_port {
unsigned long pio_task_timeout;
u32 msg_enable;
+ struct list_head eh_done_q;
void *private_data;
};
@@ -490,6 +491,8 @@ extern int ata_scsi_detect(struct scsi_host_template *sht);
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
extern int ata_scsi_error(struct Scsi_Host *host);
+extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
+extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
extern int ata_scsi_release(struct Scsi_Host *host);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
extern int ata_scsi_device_resume(struct scsi_device *);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 15:31:54 +0000