if (rc == 0)
sata_scr_write(&ap->link, SCR_NOTIFICATION, sntf);
- if (!ap->nr_pmp_links || rc) {
+ if (!sata_pmp_attached(ap) || rc) {
/* PMP is not attached or SNTF is not available */
- if (!ap->nr_pmp_links) {
+ if (!sata_pmp_attached(ap)) {
/* PMP is not attached. Check whether ATAPI
* AN is configured. If so, notify media
* change.
* LOCKING:
* Kernel thread context (may sleep).
*/
-static void ata_eh_analyze_ncq_error(struct ata_link *link)
+void ata_eh_analyze_ncq_error(struct ata_link *link)
{
struct ata_port *ap = link->ap;
struct ata_eh_context *ehc = &link->eh_context;
/* we've got the perpetrator, condemn it */
qc = __ata_qc_from_tag(ap, tag);
memcpy(&qc->result_tf, &tf, sizeof(tf));
+ qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
ehc->i.err_mask &= ~AC_ERR_DEV;
}
if (qc->flags & ATA_QCFLAG_SENSE_VALID)
qc->err_mask &= ~(AC_ERR_DEV | AC_ERR_OTHER);
+ /* determine whether the command is worth retrying */
+ if (!(qc->err_mask & AC_ERR_INVALID) &&
+ ((qc->flags & ATA_QCFLAG_IO) || qc->err_mask != AC_ERR_DEV))
+ qc->flags |= ATA_QCFLAG_RETRY;
+
/* accumulate error info */
ehc->i.dev = qc->dev;
all_err_mask |= qc->err_mask;
/* Autopsy of fanout ports can affect host link autopsy.
* Perform host link autopsy last.
*/
- if (ap->nr_pmp_links)
+ if (sata_pmp_attached(ap))
ata_eh_link_autopsy(&ap->link);
}
classes[dev->devno] = ATA_DEV_UNKNOWN;
rc = reset(link, classes, deadline);
- if (rc)
- return rc;
- /* If any class isn't ATA_DEV_UNKNOWN, consider classification
- * is complete and convert all ATA_DEV_UNKNOWN to
- * ATA_DEV_NONE.
- */
+ /* convert all ATA_DEV_UNKNOWN to ATA_DEV_NONE */
ata_link_for_each_dev(dev, link)
- if (classes[dev->devno] != ATA_DEV_UNKNOWN)
- break;
-
- if (dev) {
- ata_link_for_each_dev(dev, link) {
- if (classes[dev->devno] == ATA_DEV_UNKNOWN)
- classes[dev->devno] = ATA_DEV_NONE;
- }
- }
+ if (classes[dev->devno] == ATA_DEV_UNKNOWN)
+ classes[dev->devno] = ATA_DEV_NONE;
- return 0;
+ return rc;
}
static int ata_eh_followup_srst_needed(struct ata_link *link,
int rc, int classify,
const unsigned int *classes)
{
- if (link->flags & ATA_LFLAG_NO_SRST)
+ if ((link->flags & ATA_LFLAG_NO_SRST) || ata_link_offline(link))
return 0;
- if (rc == -EAGAIN)
- return 1;
+ if (rc == -EAGAIN) {
+ if (classify)
+ return 1;
+ rc = 0;
+ }
if (rc != 0)
return 0;
- if ((link->ap->flags & ATA_FLAG_PMP) && ata_is_host_link(link))
- return 1;
- if (classify && !(link->flags & ATA_LFLAG_ASSUME_CLASS) &&
- classes[0] == ATA_DEV_UNKNOWN)
+ if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
return 1;
return 0;
}
if (hardreset) {
reset = hardreset;
ehc->i.action = ATA_EH_HARDRESET;
- } else {
+ } else if (softreset) {
reset = softreset;
ehc->i.action = ATA_EH_SOFTRESET;
+ } else {
+ ata_link_printk(link, KERN_ERR, "BUG: no reset method, "
+ "please report to linux-ide@vger.kernel.org\n");
+ dump_stack();
+ return -EINVAL;
}
if (prereset) {
if (rc && rc != -EAGAIN)
goto fail;
- /* was classification successful? */
- if (classify && classes[0] == ATA_DEV_UNKNOWN &&
- !(lflags & ATA_LFLAG_ASSUME_CLASS)) {
- if (try < max_tries) {
- ata_link_printk(link, KERN_WARNING,
- "classification failed\n");
- rc = -EINVAL;
- goto fail;
- }
-
- ata_link_printk(link, KERN_WARNING,
- "classfication failed, assuming ATA\n");
- lflags |= ATA_LFLAG_ASSUME_ATA;
- }
-
done:
ata_link_for_each_dev(dev, link) {
/* After the reset, the device state is PIO 0 and the
return rc;
fail:
+ /* if SCR isn't accessible on a fan-out port, PMP needs to be reset */
+ if (!ata_is_host_link(link) &&
+ sata_scr_read(link, SCR_STATUS, &sstatus))
+ rc = -ERESTART;
+
if (rc == -ERESTART || try >= max_tries)
goto out;
/* if PMP is attached, this function only deals with
* downstream links, port should stay thawed.
*/
- if (!ap->nr_pmp_links)
+ if (!sata_pmp_attached(ap))
ata_eh_freeze_port(ap);
ata_port_for_each_link(link, ap) {
}
}
- if (!ap->nr_pmp_links)
+ if (!sata_pmp_attached(ap))
ata_eh_thaw_port(ap);
}
/* PMP reset requires working host port.
* Can't retry if it's frozen.
*/
- if (ap->nr_pmp_links)
+ if (sata_pmp_attached(ap))
goto out;
break;
}
/* FIXME: Once EH migration is complete,
* generate sense data in this function,
* considering both err_mask and tf.
- *
- * There's no point in retrying invalid
- * (detected by libata) and non-IO device
- * errors (rejected by device). Finish them
- * immediately.
*/
- if ((qc->err_mask & AC_ERR_INVALID) ||
- (!(qc->flags & ATA_QCFLAG_IO) &&
- qc->err_mask == AC_ERR_DEV))
- ata_eh_qc_complete(qc);
- else
+ if (qc->flags & ATA_QCFLAG_RETRY)
ata_eh_qc_retry(qc);
+ else
+ ata_eh_qc_complete(qc);
} else {
if (qc->flags & ATA_QCFLAG_SENSE_VALID) {
ata_eh_qc_complete(qc);
/**
* ata_do_eh - do standard error handling
* @ap: host port to handle error for
+ *
* @prereset: prereset method (can be NULL)
* @softreset: softreset method (can be NULL)
* @hardreset: hardreset method (can be NULL)
ata_eh_finish(ap);
}
+/**
+ * ata_std_error_handler - standard error handler
+ * @ap: host port to handle error for
+ *
+ * Standard error handler
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep).
+ */
+void ata_std_error_handler(struct ata_port *ap)
+{
+ struct ata_port_operations *ops = ap->ops;
+ ata_reset_fn_t hardreset = ops->hardreset;
+
+ /* ignore built-in hardreset if SCR access is not available */
+ if (ata_is_builtin_hardreset(hardreset) && !sata_scr_valid(&ap->link))
+ hardreset = NULL;
+
+ ata_do_eh(ap, ops->prereset, ops->softreset, hardreset, ops->postreset);
+}
+
#ifdef CONFIG_PM
/**
* ata_eh_handle_port_suspend - perform port suspend operation
projects / linux-2.6 / blobdiff