libata: move generic hardreset code from sata_sff_hardreset() to sata_link_hardreset()

sata_sff_hardreset() contains link readiness wait logic which isn't
SFF specific.  Move that part into sata_link_hardreset(), which now
takes two more parameters - @online and @check_ready.  Both are
optional.  The former is out parameter for link onlineness after
reset.  The latter is used to wait for link readiness after hardreset.

Users of sata_link_hardreset() is updated to use new funtionality and
ahci_hardreset() is updated to use sata_link_hardreset() instead of
sata_sff_hardreset().  This doesn't really cause any behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Tejun Heo
2008-04-07 22:47:19 +09:00
committed by Jeff Garzik
parent a89611e848
commit 9dadd45b24
6 changed files with 92 additions and 61 deletions

View File

@ -1921,50 +1921,19 @@ int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
struct ata_port *ap = link->ap;
const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
struct ata_eh_context *ehc = &link->eh_context;
const unsigned long *timing = sata_ehc_deb_timing(ehc);
bool online;
int rc;
DPRINTK("ENTER\n");
/* do hardreset */
rc = sata_link_hardreset(link, timing, deadline);
if (rc) {
ata_link_printk(link, KERN_ERR,
"COMRESET failed (errno=%d)\n", rc);
return rc;
}
/* TODO: phy layer with polling, timeouts, etc. */
if (ata_link_offline(link)) {
*class = ATA_DEV_NONE;
DPRINTK("EXIT, link offline\n");
return 0;
}
/* If PMP is supported, we have to do follow-up SRST. Note
* that some PMPs don't send D2H Reg FIS after hardreset at
* all if the first port is empty. Wait for it just for a
* second and request follow-up SRST.
*/
if (ap->flags & ATA_FLAG_PMP) {
ata_sff_wait_after_reset(link, 1, jiffies + HZ);
return -EAGAIN;
}
/* wait for the link to become online */
rc = ata_sff_wait_after_reset(link, 1, deadline);
/* link occupied, -ENODEV too is an error */
if (rc) {
ata_link_printk(link, KERN_ERR,
"COMRESET failed (errno=%d)\n", rc);
return rc;
}
*class = ata_sff_dev_classify(link->device, 1, NULL);
rc = sata_link_hardreset(link, timing, deadline, &online,
ata_sff_check_ready);
*class = ATA_DEV_NONE;
if (online)
*class = ata_sff_dev_classify(link->device, 1, NULL);
DPRINTK("EXIT, class=%u\n", *class);
return 0;
return rc;
}
/**