New MSI support in sata_sil24 still broken in 2.6.33-rc3

[Torsten Kaiser]

After activating the MSI support by adding sata_sil24.msi=1 to the
kernel command line, the first write to a drive attached to the SiI
3132 controller results in the following errors:

[  138.950074] ata2.00: exception Emask 0x0 SAct 0xf SErr 0x0 action 0x6 frozen
[  138.961023] ata2.00: failed command: WRITE FPDMA QUEUED
[  138.970034] ata2.00: cmd 61/00:00:a5:95:4a/04:00:01:00:00/40 tag 0
ncq 524288 out
[  138.970037]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask
0x4 (timeout)
[  138.992467] ata2.00: status: { DRDY }
[  138.999864] ata2.00: failed command: WRITE FPDMA QUEUED
[  139.008830] ata2.00: cmd 61/00:08:a5:91:4a/04:00:01:00:00/40 tag 1
ncq 524288 out
[  139.008833]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask
0x4 (timeout)
[  139.031370] ata2.00: status: { DRDY }
[  139.038906] ata2.00: failed command: WRITE FPDMA QUEUED
[  139.048055] ata2.00: cmd 61/00:10:a5:8d:4a/04:00:01:00:00/40 tag 2
ncq 524288 out
[  139.048058]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask
0x4 (timeout)
[  139.070828] ata2.00: status: { DRDY }
[  139.078383] ata2.00: failed command: WRITE FPDMA QUEUED
[  139.087506] ata2.00: cmd 61/00:18:a5:99:4a/04:00:01:00:00/40 tag 3
ncq 524288 out
[  139.087509]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask
0x4 (timeout)
[  139.110281] ata2.00: status: { DRDY }
[  139.117877] ata2: hard resetting link
[  141.310057] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[  146.310037] ata2.00: qc timeout (cmd 0xec)
[  146.318032] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x5)
[  146.328027] ata2.00: revalidation failed (errno=-5)
[  146.336815] ata2: hard resetting link
[  148.530055] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
[  158.530035] ata2.00: qc timeout (cmd 0xec)
[  158.538066] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x5)
[  158.548122] ata2.00: revalidation failed (errno=-5)
[  158.556955] ata2: limiting SATA link speed to 1.5 Gbps
[  158.566052] ata2: hard resetting link
[  160.760071] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[  190.760046] ata2.00: qc timeout (cmd 0xec)
[  190.768137] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x5)
[  190.778219] ata2.00: revalidation failed (errno=-5)
[  190.787085] ata2.00: disabled
[  190.794002] ata2.00: device reported invalid CHS sector 0
[  190.803368] ata2.00: device reported invalid CHS sector 0
[  190.812704] ata2.00: device reported invalid CHS sector 0
[  190.821965] ata2.00: device reported invalid CHS sector 0
[  190.831231] ata2: hard resetting link
[  193.030050] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[  193.030073] ata2: EH complete
[  193.030112] sd 1:0:0:0: [sdb] Unhandled error code
[  193.030120] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK
[  193.030127] sd 1:0:0:0: [sdb] CDB: Write(10): 2a 00 01 4a 99 a5 00 04 00 00
[  193.030141] end_request: I/O error, dev sdb, sector 21666213
[  193.039854] sd 1:0:0:0: [sdb] Unhandled error code
[  193.039857] sd 1:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK
[  193.039862] sd 1:0:0:0: [sdb] CDB: Write(10): 2a 00 01 4a 8d a5 00 04 00 00
[  193.039874] end_request: I/O error, dev sdb, sector 21663141
[  193.040083] sd 1:0:0:0: [sdb] Unhandled error code

This repeats for a large number of times, then the XFS filesystem gets
shut down.

More information about my system are in my first report:
http://lkml.org/lkml/2009/12/19/82

lspci -vv for both the normal, working and the broken MSI case are in
my second try to report this:
http://lkml.org/lkml/2009/12/25/12

Please ask, if you need more information.

Torsten
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