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

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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
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10
include/linux/libata.h
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@@ -261,6 +261,13 @@ enum {
*/
ATA_WAIT_AFTER_RESET_MSECS = 150,
/* If PMP is supported, we have to do follow-up SRST. As some
* PMPs don't send D2H Reg FIS after hardreset, LLDs are
* advised to wait only for the following duration before
* doing SRST.
*/
ATA_TMOUT_PMP_SRST_WAIT = 1 * HZ,
/* ATA bus states */
BUS_UNKNOWN = 0,
BUS_DMA = 1,
@@ -844,7 +851,8 @@ extern int sata_link_debounce(struct ata_link *link,
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline);
extern int sata_link_hardreset(struct ata_link *link,
const unsigned long *timing, unsigned long deadline);
const unsigned long *timing, unsigned long deadline,
bool *online, int (*check_ready)(struct ata_link *));
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
extern void ata_port_disable(struct ata_port *);