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SubjectRe: [2.6.10-rc2+] ide1=ata66 -- OBSOLETE OPTION, WILL BE REMOVED SOON!
On Sun, 05 Dec 2004 20:23:13 +0100, Rene Herman
<rene.herman@keyaccess.nl> wrote:
> Hi Bart.

Hi,

> I see your 2004-11-01 IDE update:
>
> http://lkml.org/lkml/2004/11/1/158
>
> obsoleted the idex=ata66 option, saying that it "should be handled by
> host drivers needing it". As far as I can see, amd74xx does not handle this?
>
> I do need a way to force an 80c cable on this AMD756 (ATA66 max) board,
> since the BIOS doesn't seem to be setting the cable bits correctly.

Ugh, I checked AMD datasheets and AMD756 doesn't support host
side cable detection. Well, we can try doing disk side only for it.
[ ATi and ITE (in -ac kernels) drivers are also doing this. ]

--- amd74xx.c.orig 2004-11-02 14:17:14.000000000 +0100
+++ amd74xx.c 2004-12-13 22:41:50.406229168 +0100
@@ -344,10 +344,8 @@
break;

case AMD_UDMA_66:
- pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
- for (i = 24; i >= 0; i -= 8)
- if ((u >> i) & 4)
- amd_80w |= (1 << (1 - (i >> 4)));
+ /* no host side cable detection */
+ amd_80w = 0x03;
break;
}
-
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