ATA_EH_SPDN_FALLBACK_TO_PIO = (1 << 2),
};
+/* Waiting in ->prereset can never be reliable. It's sometimes nice
+ * to wait there but it can't be depended upon; otherwise, we wouldn't
+ * be resetting. Just give it enough time for most drives to spin up.
+ */
+enum {
+ ATA_EH_PRERESET_TIMEOUT = 10 * HZ,
+};
+
+/* The following table determines how we sequence resets. Each entry
+ * represents timeout for that try. The first try can be soft or
+ * hardreset. All others are hardreset if available. In most cases
+ * the first reset w/ 10sec timeout should succeed. Following entries
+ * are mostly for error handling, hotplug and retarded devices.
+ */
+static const unsigned long ata_eh_reset_timeouts[] = {
+ 10 * HZ, /* most drives spin up by 10sec */
+ 10 * HZ, /* > 99% working drives spin up before 20sec */
+ 35 * HZ, /* give > 30 secs of idleness for retarded devices */
+ 5 * HZ, /* and sweet one last chance */
+ /* > 1 min has elapsed, give up */
+};
+
static void __ata_port_freeze(struct ata_port *ap);
static void ata_eh_finish(struct ata_port *ap);
#ifdef CONFIG_PM
* RETURNS:
* 0 on success, AC_ERR_* mask on failure
*/
-static unsigned int atapi_eh_request_sense(struct ata_device *dev,
- unsigned char *sense_buf)
+static unsigned int atapi_eh_request_sense(struct ata_queued_cmd *qc)
{
+ struct ata_device *dev = qc->dev;
+ unsigned char *sense_buf = qc->scsicmd->sense_buffer;
struct ata_port *ap = dev->ap;
struct ata_taskfile tf;
u8 cdb[ATAPI_CDB_LEN];
DPRINTK("ATAPI request sense\n");
- ata_tf_init(dev, &tf);
-
/* FIXME: is this needed? */
memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
- /* XXX: why tf_read here? */
- ap->ops->tf_read(ap, &tf);
-
- /* fill these in, for the case where they are -not- overwritten */
+ /* initialize sense_buf with the error register,
+ * for the case where they are -not- overwritten
+ */
sense_buf[0] = 0x70;
- sense_buf[2] = tf.feature >> 4;
+ sense_buf[2] = qc->result_tf.feature >> 4;
+
+ /* some devices time out if garbage left in tf */
+ ata_tf_init(dev, &tf);
memset(cdb, 0, ATAPI_CDB_LEN);
cdb[0] = REQUEST_SENSE;
}
if (serror & SERR_INTERNAL) {
err_mask |= AC_ERR_SYSTEM;
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_HARDRESET;
}
if (serror & (SERR_PHYRDY_CHG | SERR_DEV_XCHG))
ata_ehi_hotplugged(&ehc->i);
return ATA_EH_SOFTRESET;
}
- if (!(qc->err_mask & AC_ERR_DEV))
+ if (stat & (ATA_ERR | ATA_DF))
+ qc->err_mask |= AC_ERR_DEV;
+ else
return 0;
switch (qc->dev->class) {
case ATA_DEV_ATAPI:
if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
- tmp = atapi_eh_request_sense(qc->dev,
- qc->scsicmd->sense_buffer);
+ tmp = atapi_eh_request_sense(qc);
if (!tmp) {
/* ATA_QCFLAG_SENSE_VALID is used to
* tell atapi_qc_complete() that sense
}
static int ata_do_reset(struct ata_port *ap, ata_reset_fn_t reset,
- unsigned int *classes)
+ unsigned int *classes, unsigned long deadline)
{
int i, rc;
for (i = 0; i < ATA_MAX_DEVICES; i++)
classes[i] = ATA_DEV_UNKNOWN;
- rc = reset(ap, classes);
+ rc = reset(ap, classes, deadline);
if (rc)
return rc;
{
struct ata_eh_context *ehc = &ap->eh_context;
unsigned int *classes = ehc->classes;
- int tries = ATA_EH_RESET_TRIES;
int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
+ int try = 0;
+ unsigned long deadline;
unsigned int action;
ata_reset_fn_t reset;
int i, did_followup_srst, rc;
ehc->i.action |= ATA_EH_HARDRESET;
if (prereset) {
- rc = prereset(ap);
+ rc = prereset(ap, jiffies + ATA_EH_PRERESET_TIMEOUT);
if (rc) {
if (rc == -ENOENT) {
ata_port_printk(ap, KERN_DEBUG,
}
retry:
+ deadline = jiffies + ata_eh_reset_timeouts[try++];
+
/* shut up during boot probing */
if (verbose)
ata_port_printk(ap, KERN_INFO, "%s resetting port\n",
reset == softreset ? "soft" : "hard");
/* mark that this EH session started with reset */
- ehc->i.flags |= ATA_EHI_DID_RESET;
+ if (reset == hardreset)
+ ehc->i.flags |= ATA_EHI_DID_HARDRESET;
+ else
+ ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
- rc = ata_do_reset(ap, reset, classes);
+ rc = ata_do_reset(ap, reset, classes, deadline);
did_followup_srst = 0;
if (reset == hardreset &&
}
ata_eh_about_to_do(ap, NULL, ATA_EH_RESET_MASK);
- rc = ata_do_reset(ap, reset, classes);
+ rc = ata_do_reset(ap, reset, classes, deadline);
if (rc == 0 && classify &&
classes[0] == ATA_DEV_UNKNOWN) {
}
}
- if (rc && --tries) {
- const char *type;
+ if (rc && try < ARRAY_SIZE(ata_eh_reset_timeouts)) {
+ unsigned long now = jiffies;
- if (reset == softreset) {
- if (did_followup_srst)
- type = "follow-up soft";
- else
- type = "soft";
- } else
- type = "hard";
+ if (time_before(now, deadline)) {
+ unsigned long delta = deadline - jiffies;
- ata_port_printk(ap, KERN_WARNING,
- "%sreset failed, retrying in 5 secs\n", type);
- ssleep(5);
+ ata_port_printk(ap, KERN_WARNING, "reset failed "
+ "(errno=%d), retrying in %u secs\n",
+ rc, (jiffies_to_msecs(delta) + 999) / 1000);
- if (reset == hardreset)
+ schedule_timeout_uninterruptible(delta);
+ }
+
+ if (reset == hardreset &&
+ try == ARRAY_SIZE(ata_eh_reset_timeouts) - 1)
sata_down_spd_limit(ap);
if (hardreset)
reset = hardreset;
}
}
+ /* PDIAG- should have been released, ask cable type if post-reset */
+ if ((ehc->i.flags & ATA_EHI_DID_RESET) && ap->ops->cable_detect)
+ ap->cbl = ap->ops->cable_detect(ap);
+
/* Configure new devices forward such that user doesn't see
* device detection messages backwards.
*/
projects / powerpc.git / blobdiff