8.0-beta3 does not detect several ata channels

[Rainer Hurling]

On 01.09.2009 23:17 (UTC+2), John Baldwin wrote:
> On Tuesday 01 September 2009 4:40:41 pm Rainer Hurling wrote:
>> On 01.09.2009 21:05 (UTC+2), John Baldwin wrote:
>>> On Tuesday 01 September 2009 2:49:09 pm Rainer Hurling wrote:
>>>> On 01.09.2009 19:41 (UTC+2), John Baldwin wrote:
>>>>> On Tuesday 01 September 2009 12:47:50 pm Rainer Hurling wrote:
>>>>>> On 01.09.2009 16:02 (UTC+2), John Baldwin wrote:
>>>>>>> On Monday 31 August 2009 12:03:04 pm Florian Smeets wrote:
>>>>>>>> On 8/31/09 5:54 PM, Nick Hilliard wrote:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> I have a hp proliant ML115 with 6 sata ports which run in ATA mode 
>>> (bios
>>>>>>>>> doesn't appear to give the option to use AHCI).  On freebsd 7.x, all
>>>>>>>>> channels are detected.  On freebsd8.0-beta3, the disks attached to 
> the
>>>>>>>>> first two SATA ports are not detected, although it detects the ports
>>>>>>>>> themselves.
>>>>>>>>>
>>>>>>>>> I've attached a verbose dmesg from freebsd 7.1 and 8.0-beta3.
>>>>>>>>>
>>>>>>>>> Any ideas on what's going on here?  This seems like a nasty 
>>> regression.
>>>>>>>> There are 3 PRs about this problem: 128686, 132372, 137942.
>>>>>>>>
>>>>>>>> i386 version should recognize the disks. amd64 does when you set
>>>>>>>> hw.pci.mcfg=0 in loader.conf.
>>>>>>> Hmm, so an idea I had just now.. can you grab a dump of the PCI config 
>>>>> space 
>>>>>>> for the disk controller in the MCFG vs non-MCFG cases?  That is, find 
>>> the 
>>>>>>> device's address using pciconf -lv (e.g. pci0:0:30:0 or some such) and 
>>>>> then 
>>>>>>> run this command under both configurations and save the output:
>>>>>>>
>>>>>>> pciconf -r pci0:0:30:0 0:0xfc
>>>>>>>
>>>>>> I am not sure if your idea has something to do with my (and some other 
>>>>>> users) problem. So excuse me, if this posting is wrong.
>>>>>>
>>>>>> For some month now I am only able to boot CURRENT under amd64 with 
>>>>>> setting hw.pci.mcfg=0. Under i386 all works fine. Below I listed output 
>>>>>> under i386 and under amd64. Perhaps you are able to get a hint?
>>>>> Hmm, would you be able to boot with mcfg=1 on amd64 (perhaps using 
> nfsroot 
>>> or 
>>>>> an mfsroot) and capture this output?  The mcfg thing only affects access 
>>> to
>>>>> PCI config space (what pciconf -r is displaying).  I want to be able to 
>>>>> compare the "broken" case (amd64 mcfg=1) with a working case.
>>>> My only amd64 system is at home. Sorry, but I have no idea how to start 
>>>> this system using nfsroot oder mfsroot.
>>> Ok, I believe some of the other folks reporting an issue with this ATA 
>>> controller had other disk controllers in the system so they may be able to 
> do 
>>> this.
>> Thanks to Kostik Belousov, I tried his hint with live CD. Here it is, 
>> only for amd64, with snapshot from todays CURRENT:
>>
>> #systctl hw.pci.mcfg
>> hw.pci.mcfg: 1
> 
> Hmm, this one is identical to the mcfg=0 one on amd64 (except for a few values 
> that also differ between the working i386 and working amd64).  So it doesn't 
> seem that PCI config access is horribly broken. :(  Perhaps someone can spend 
> some time comparing what the driver does in the two cases with some printfs 
> to see when it starts behaving differently during its attach routine to help 
> narrow this down.
> 

Is there any meaning in the differences of pciconf -lv output of i386 
and amd64 (already shown in older postings)?

-------------------------------------------
i386:
atapci1 at pci0:0:5:0:     class=0x010185 card=0x72601462 chip=0x037f10de 
rev=0xa2 hdr=0x00
     vendor     = 'Nvidia Corp'
     device     = 'MCP55 SATA/RAID Controller (MCP55S)'
     class      = mass storage
     subclass   = ATA
atapci2 at pci0:0:5:1:     class=0x010185 card=0x72601462 chip=0x037f10de
rev=0xa2 hdr=0x00
     vendor     = 'Nvidia Corp'
     device     = 'MCP55 SATA/RAID Controller (MCP55S)'
     class      = mass storage
     subclass   = ATA
-------------------------------------------
amd64:
atapci1 at pci0:0:5:0:     class=0x010185 card=0x72601462 chip=0x037f10de 
rev=0xa2 hdr=0x00
     class      = mass storage
     subclass   = ATA
atapci2 at pci0:0:5:1:     class=0x010185 card=0x72601462 chip=0x037f10de 
rev=0xa2 hdr=0x00
     class      = mass storage
     subclass   = ATA
-------------------------------------------

In the amd64 version there is no vendor and device string. Perhaps a 
problem of reading or interpreting?

Rainer Hurling