SPOOFED: Re: SVN rev 206755 breakage

Alexander Motin mav at FreeBSD.org
Sun Apr 18 13:05:58 UTC 2010

Rui Paulo wrote:
> On 18 Apr 2010, at 06:57, Alexander Motin wrote:
>> Rui Paulo wrote:
>>> On 17 Apr 2010, at 23:12, Michael Butler wrote:
>>>> On 04/17/10 18:05, Rui Paulo wrote:
>>>>> On 17 Apr 2010, at 22:34, Michael Butler wrote:
>>>>>> The revision labeled:
>>>>>> SVN rev 206755 on 2010-04-17 11:40:39Z by rpaulo
>>>>>> Add another ICH7M chipset that works.
>>>>>> .. is incorrect and will cause some laptops to not boot.
>>>>> So, in AHCI mode it doesn't find the disks?
>>>> No - the driver fails to attach (ENXIO).
>>> But since ahci failed to attach, won't atapci attach later?
>> If probe succeeded - no.
>>> Can you show me the dmesg?
>> More important probably would be `pciconf -lvcb`.
>> Intel controllers after ICH6 change both ID and set of resources,
>> depending on AHCI enabled in BIOS. There is separate set of IDs for
>> controllers with AHCI enabled. As I can see, Linux handles ID 0x27c4 as
>> non-AHCI SATA. If for some reason this ID could be used for both modes
>> (I have doubts),
> It can be used in both modes. atapci used to attach to it on my MacBook.

Most of AHCI controllers could also work as usual PCI ATA, but not every
PCI ATA could work as AHCI. It would be nice to compare `pciconf -lvbc`
output in both working (Rui) and not working (Michael) cases.

Alexander Motin

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