dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

[PATCH] sata_sil: disable hotplug interrupts on two ATI IXPs 

Some SATA controllers embedded in ATI IXPs seem to have broken
SATA_IRQ bit in their bmdma2 registers which is always stuck at 1.
This makes the driver believe that there has been a hotplug event and
freeze the port whenever there's an interrupt thus failing all
commands.

This patch disables SATA_IRQ for those controllers.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-06-26 21:23:52 +09:00 committed by Jeff Garzik
parent 88574551b4
commit 201ce85946
1 changed files with 23 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/scsi/sata_sil.c
View File

@ -52,6 +52,7 @@ enum {
/*
* host flags
*/
SIL_FLAG_NO_SATA_IRQ = (1 << 28),
SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
SIL_FLAG_MOD15WRITE = (1 << 30),
@ -62,8 +63,9 @@ enum {
* Controller IDs
*/
sil_3112 = 0,
sil_3512 = 1,
sil_3114 = 2,
sil_3112_no_sata_irq = 1,
sil_3512 = 2,
sil_3114 = 3,
/*
* Register offsets
@ -123,8 +125,8 @@ static const struct pci_device_id sil_pci_tbl[] = {
{ 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3512 },
{ 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
{ 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
{ 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
{ 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
{ 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_no_sata_irq },
{ 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_no_sata_irq },
{ } /* terminate list */
};
@ -217,6 +219,16 @@ static const struct ata_port_info sil_port_info[] = {
.udma_mask = 0x3f, /* udma0-5 */
.port_ops = &sil_ops,
},
/* sil_3112_no_sata_irq */
{
.sht = &sil_sht,
.host_flags = SIL_DFL_HOST_FLAGS | SIL_FLAG_MOD15WRITE |
SIL_FLAG_NO_SATA_IRQ,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x3f, /* udma0-5 */
.port_ops = &sil_ops,
},
/* sil_3512 */
{
.sht = &sil_sht,
@ -437,6 +449,10 @@ static irqreturn_t sil_interrupt(int irq, void *dev_instance,
if (unlikely(!ap || ap->flags & ATA_FLAG_DISABLED))
continue;
/* turn off SATA_IRQ if not supported */
if (ap->flags & SIL_FLAG_NO_SATA_IRQ)
bmdma2 &= ~SIL_DMA_SATA_IRQ;
if (bmdma2 == 0xffffffff ||
!(bmdma2 & (SIL_DMA_COMPLETE | SIL_DMA_SATA_IRQ)))
continue;
@ -474,8 +490,9 @@ static void sil_thaw(struct ata_port *ap)
ata_chk_status(ap);
ata_bmdma_irq_clear(ap);
/* turn on SATA IRQ */
writel(SIL_SIEN_N, mmio_base + sil_port[ap->port_no].sien);
/* turn on SATA IRQ if supported */
if (!(ap->flags & SIL_FLAG_NO_SATA_IRQ))
writel(SIL_SIEN_N, mmio_base + sil_port[ap->port_no].sien);
/* turn on IRQ */
tmp = readl(mmio_base + SIL_SYSCFG);