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path: root/drivers/scsi/libata-core.c
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Diffstat (limited to 'drivers/scsi/libata-core.c')
-rw-r--r--drivers/scsi/libata-core.c69
1 files changed, 47 insertions, 22 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index f37cc01e8db..82f566cf75c 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -606,7 +606,7 @@ void ata_rwcmd_protocol(struct ata_queued_cmd *qc)
tf->command = ata_rw_cmds[index + lba48 + write];
}
-static const char * xfer_mode_str[] = {
+static const char * const xfer_mode_str[] = {
"UDMA/16",
"UDMA/25",
"UDMA/33",
@@ -1054,9 +1054,9 @@ static int ata_qc_wait_err(struct ata_queued_cmd *qc,
if (wait_for_completion_timeout(wait, 30 * HZ) < 1) {
/* timeout handling */
- unsigned int err_mask = ac_err_mask(ata_chk_status(qc->ap));
+ qc->err_mask |= ac_err_mask(ata_chk_status(qc->ap));
- if (!err_mask) {
+ if (!qc->err_mask) {
printk(KERN_WARNING "ata%u: slow completion (cmd %x)\n",
qc->ap->id, qc->tf.command);
} else {
@@ -1065,7 +1065,7 @@ static int ata_qc_wait_err(struct ata_queued_cmd *qc,
rc = -EIO;
}
- ata_qc_complete(qc, err_mask);
+ ata_qc_complete(qc);
}
return rc;
@@ -1176,6 +1176,7 @@ retry:
qc->cursg_ofs = 0;
qc->cursect = 0;
qc->nsect = 1;
+ qc->err_mask = 0;
goto retry;
}
}
@@ -2093,7 +2094,7 @@ static void ata_pr_blacklisted(const struct ata_port *ap,
ap->id, dev->devno);
}
-static const char * ata_dma_blacklist [] = {
+static const char * const ata_dma_blacklist [] = {
"WDC AC11000H",
"WDC AC22100H",
"WDC AC32500H",
@@ -2787,14 +2788,14 @@ skip_map:
* None. (grabs host lock)
*/
-void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+void ata_poll_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
unsigned long flags;
spin_lock_irqsave(&ap->host_set->lock, flags);
ata_irq_on(ap);
- ata_qc_complete(qc, err_mask);
+ ata_qc_complete(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
}
@@ -2811,10 +2812,14 @@ void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
static unsigned long ata_pio_poll(struct ata_port *ap)
{
+ struct ata_queued_cmd *qc;
u8 status;
unsigned int poll_state = HSM_ST_UNKNOWN;
unsigned int reg_state = HSM_ST_UNKNOWN;
+ qc = ata_qc_from_tag(ap, ap->active_tag);
+ assert(qc != NULL);
+
switch (ap->hsm_task_state) {
case HSM_ST:
case HSM_ST_POLL:
@@ -2834,6 +2839,7 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
status = ata_chk_status(ap);
if (status & ATA_BUSY) {
if (time_after(jiffies, ap->pio_task_timeout)) {
+ qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_TMOUT;
return 0;
}
@@ -2869,29 +2875,31 @@ static int ata_pio_complete (struct ata_port *ap)
* msecs, then chk-status again. If still busy, fall back to
* HSM_ST_LAST_POLL state.
*/
- drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
- if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
+ drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
+ if (drv_stat & ATA_BUSY) {
msleep(2);
- drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
- if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
+ drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
+ if (drv_stat & ATA_BUSY) {
ap->hsm_task_state = HSM_ST_LAST_POLL;
ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO;
return 1;
}
}
+ qc = ata_qc_from_tag(ap, ap->active_tag);
+ assert(qc != NULL);
+
drv_stat = ata_wait_idle(ap);
if (!ata_ok(drv_stat)) {
+ qc->err_mask |= __ac_err_mask(drv_stat);
ap->hsm_task_state = HSM_ST_ERR;
return 1;
}
- qc = ata_qc_from_tag(ap, ap->active_tag);
- assert(qc != NULL);
-
ap->hsm_task_state = HSM_ST_IDLE;
- ata_poll_qc_complete(qc, 0);
+ assert(qc->err_mask == 0);
+ ata_poll_qc_complete(qc);
/* another command may start at this point */
@@ -3363,6 +3371,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
err_out:
printk(KERN_INFO "ata%u: dev %u: ATAPI check failed\n",
ap->id, dev->devno);
+ qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_ERR;
}
@@ -3401,8 +3410,16 @@ static void ata_pio_block(struct ata_port *ap)
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
+ /* check error */
+ if (status & (ATA_ERR | ATA_DF)) {
+ qc->err_mask |= AC_ERR_DEV;
+ ap->hsm_task_state = HSM_ST_ERR;
+ return;
+ }
+
+ /* transfer data if any */
if (is_atapi_taskfile(&qc->tf)) {
- /* no more data to transfer or unsupported ATAPI command */
+ /* DRQ=0 means no more data to transfer */
if ((status & ATA_DRQ) == 0) {
ap->hsm_task_state = HSM_ST_LAST;
return;
@@ -3412,6 +3429,7 @@ static void ata_pio_block(struct ata_port *ap)
} else {
/* handle BSY=0, DRQ=0 as error */
if ((status & ATA_DRQ) == 0) {
+ qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_ERR;
return;
}
@@ -3431,9 +3449,14 @@ static void ata_pio_error(struct ata_port *ap)
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
+ /* make sure qc->err_mask is available to
+ * know what's wrong and recover
+ */
+ assert(qc->err_mask);
+
ap->hsm_task_state = HSM_ST_IDLE;
- ata_poll_qc_complete(qc, AC_ERR_ATA_BUS);
+ ata_poll_qc_complete(qc);
}
static void ata_pio_task(void *_data)
@@ -3542,7 +3565,8 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
ap->hsm_task_state = HSM_ST_IDLE;
/* complete taskfile transaction */
- ata_qc_complete(qc, ac_err_mask(drv_stat));
+ qc->err_mask |= ac_err_mask(drv_stat);
+ ata_qc_complete(qc);
break;
}
@@ -3641,7 +3665,7 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
return qc;
}
-int ata_qc_complete_noop(struct ata_queued_cmd *qc, unsigned int err_mask)
+int ata_qc_complete_noop(struct ata_queued_cmd *qc)
{
return 0;
}
@@ -3700,7 +3724,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
* spin_lock_irqsave(host_set lock)
*/
-void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+void ata_qc_complete(struct ata_queued_cmd *qc)
{
int rc;
@@ -3717,7 +3741,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
qc->flags &= ~ATA_QCFLAG_ACTIVE;
/* call completion callback */
- rc = qc->complete_fn(qc, err_mask);
+ rc = qc->complete_fn(qc);
/* if callback indicates not to complete command (non-zero),
* return immediately
@@ -4303,7 +4327,8 @@ fsm_start:
ap->hsm_task_state = HSM_ST_IDLE;
/* complete taskfile transaction */
- ata_qc_complete(qc, ac_err_mask(status));
+ qc->err_mask |= ac_err_mask(status);
+ ata_qc_complete(qc);
break;
case HSM_ST_ERR:
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-07 19:10:36 +0000