Re: ICH8 CF timeout (regression)...

[Tejun Heo]

Daniel J Blueman wrote:
> The ICH8 south-bridge I have is the mobile variant and does come
> equipped with native parallel IDE - see page 447:
> http://download.intel.com/design/chipsets/datashts/31305603.pdf . I do
> see 35MB/s with DMA enabled from my CF on the 1 in 15 times the
> libata-kernel does work.
> 
> I can dump off and decode the configuration registers for the timing
> and bus master registers in the working and non-working libata cases,
> and the legacy ATA working case and see what's different.

Does the attached patch change anything?

-- 
tejun
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index ad07086..47a344b 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -436,7 +436,7 @@ static const struct piix_map_db ich8_map_db = {
 		/* PM   PS   SM   SS       MAP */
 		{  P0,  P2,  P1,  P3 }, /* 00b (hardwired when in AHCI) */
 		{  RV,  RV,  RV,  RV },
-		{  IDE,  IDE,  NA,  NA }, /* 10b (IDE mode) */
+		{  P0,  P2, IDE, IDE }, /* 10b (IDE mode) */
 		{  RV,  RV,  RV,  RV },
 	},
 };