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libata-pmp: hook PMP support and enable it

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Hook PMP support into libata and enable it.  Connect SCR and probing
functions, and update ata_dev_classify() to detect PMP.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-09-23 13:19:54 +09:00
committed by Jeff Garzik
parent 3af9a77af9
commit 633273a3ed
3 changed files with 96 additions and 35 deletions
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18
drivers/ata/libata-eh.c
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@@ -2209,6 +2209,8 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
readid_flags |= ATA_READID_POSTRESET;
if ((action & ATA_EH_REVALIDATE) && ata_dev_enabled(dev)) {
WARN_ON(dev->class == ATA_DEV_PMP);
if (ata_link_offline(link)) {
rc = -EIO;
goto err;
@@ -2234,8 +2236,11 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
ata_class_enabled(ehc->classes[dev->devno])) {
dev->class = ehc->classes[dev->devno];
rc = ata_dev_read_id(dev, &dev->class, readid_flags,
dev->id);
if (dev->class == ATA_DEV_PMP)
rc = sata_pmp_attach(dev);
else
rc = ata_dev_read_id(dev, &dev->class,
readid_flags, dev->id);
switch (rc) {
case 0:
new_mask |= 1 << dev->devno;
@@ -2264,7 +2269,8 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
* device detection messages backwards.
*/
ata_link_for_each_dev(dev, link) {
if (!(new_mask & (1 << dev->devno)))
if (!(new_mask & (1 << dev->devno)) ||
dev->class == ATA_DEV_PMP)
continue;
ehc->i.flags |= ATA_EHI_PRINTINFO;
@@ -2521,6 +2527,12 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
if (rc)
goto dev_fail;
/* if PMP got attached, return, pmp EH will take care of it */
if (link->device->class == ATA_DEV_PMP) {
ehc->i.action = 0;
return 0;
}
/* configure transfer mode if necessary */
if (ehc->i.flags & ATA_EHI_SETMODE) {
rc = ata_set_mode(link, &dev);