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[PATCH] libata: separate out sata_phy_resume() from sata_std_hardreset() 

This patch separates out sata_phy_resume() from sata_std_hardreset().
The function will later be used by probeinit callback.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Tejun Heo 2006-02-02 18:20:00 +09:00 committed by Jeff Garzik
parent b911fc3ae0
commit 7a7921e866
1 changed files with 21 additions and 11 deletions
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32
drivers/scsi/libata-core.c
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@ -2277,6 +2277,24 @@ void ata_bus_reset(struct ata_port *ap)
DPRINTK("EXIT\n");
}
static int sata_phy_resume(struct ata_port *ap)
{
unsigned long timeout = jiffies + (HZ * 5);
u32 sstatus;
scr_write_flush(ap, SCR_CONTROL, 0x300);
/* Wait for phy to become ready, if necessary. */
do {
msleep(200);
sstatus = scr_read(ap, SCR_STATUS);
if ((sstatus & 0xf) != 1)
return 0;
} while (time_before(jiffies, timeout));
return -1;
}
/**
* ata_std_softreset - reset host port via ATA SRST
* @ap: port to reset
@ -2357,8 +2375,7 @@ int ata_std_softreset(struct ata_port *ap, int verbose, unsigned int *classes)
*/
int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
{
u32 sstatus, serror;
unsigned long timeout = jiffies + (HZ * 5);
u32 serror;
DPRINTK("ENTER\n");
@ -2371,15 +2388,8 @@ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
*/
msleep(1);
scr_write_flush(ap, SCR_CONTROL, 0x300);
/* Wait for phy to become ready, if necessary. */
do {
msleep(200);
sstatus = scr_read(ap, SCR_STATUS);
if ((sstatus & 0xf) != 1)
break;
} while (time_before(jiffies, timeout));
/* Bring phy back */
sata_phy_resume(ap);
/* Clear SError */
serror = scr_read(ap, SCR_ERROR);