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[PATCH] ahci: use ata_wait_register()

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Replace ahci_poll_register() with ata_wait_register().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-04-11 22:22:29 +09:00 committed by Jeff Garzik
parent c22daff410
commit 75fe18069a
1 changed files with 6 additions and 25 deletions
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31
drivers/scsi/ahci.c
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@ -516,24 +516,6 @@ static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, u32 opts)
pp->cmd_slot[0].tbl_addr_hi = cpu_to_le32((pp->cmd_tbl_dma >> 16) >> 16);
}
static int ahci_poll_register(void __iomem *reg, u32 mask, u32 val,
unsigned long interval_msec,
unsigned long timeout_msec)
{
unsigned long timeout;
u32 tmp;
timeout = jiffies + (timeout_msec * HZ) / 1000;
do {
tmp = readl(reg);
if ((tmp & mask) == val)
return 0;
msleep(interval_msec);
} while (time_before(jiffies, timeout));
return -1;
}
static int ahci_softreset(struct ata_port *ap, unsigned int *class)
{
struct ahci_host_priv *hpriv = ap->host_set->private_data;
@ -543,6 +525,7 @@ static int ahci_softreset(struct ata_port *ap, unsigned int *class)
const u32 cmd_fis_len = 5; /* five dwords */
const char *reason = NULL;
struct ata_taskfile tf;
u32 tmp;
u8 *fis;
int rc;
@ -564,8 +547,6 @@ static int ahci_softreset(struct ata_port *ap, unsigned int *class)
/* check BUSY/DRQ, perform Command List Override if necessary */
ahci_tf_read(ap, &tf);
if (tf.command & (ATA_BUSY | ATA_DRQ)) {
u32 tmp;
if (!(hpriv->cap & HOST_CAP_CLO)) {
rc = -EIO;
reason = "port busy but no CLO";
@ -575,10 +556,10 @@ static int ahci_softreset(struct ata_port *ap, unsigned int *class)
tmp = readl(port_mmio + PORT_CMD);
tmp |= PORT_CMD_CLO;
writel(tmp, port_mmio + PORT_CMD);
readl(port_mmio + PORT_CMD); /* flush */
if (ahci_poll_register(port_mmio + PORT_CMD, PORT_CMD_CLO, 0x0,
1, 500)) {
tmp = ata_wait_register(port_mmio + PORT_CMD,
PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
if (tmp & PORT_CMD_CLO) {
rc = -EIO;
reason = "CLO failed";
goto fail_restart;
@ -599,9 +580,9 @@ static int ahci_softreset(struct ata_port *ap, unsigned int *class)
fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
writel(1, port_mmio + PORT_CMD_ISSUE);
readl(port_mmio + PORT_CMD_ISSUE); /* flush */
if (ahci_poll_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x0, 1, 500)) {
tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, 500);
if (tmp & 0x1) {
rc = -EIO;
reason = "1st FIS failed";
goto fail;