sata_mv as module on taiga?

[Leisner, Martin]

I'm using 2.6.20.11 on a taiga board.

With the default kernel config, sata_mv runs fine if nothing is in the
pci slots.

If I install a vitesse 7174 (or an intel gd32144, I happen to have both)
it causes bizarre failures in the sata_mv driver:
sata_mv 0000:00:03.0: version 0.7
sata_mv 0000:00:03.0: 32 slots 4 ports SCSI mode IRQ via INTx
ata1: SATA max UDMA/133 cmd 0x0 ctl 0xE10A2120 bmdma 0x0 irq 38
ata2: SATA max UDMA/133 cmd 0x0 ctl 0xE10A4120 bmdma 0x0 irq 38
ata3: SATA max UDMA/133 cmd 0x0 ctl 0xE10A6120 bmdma 0x0 irq 38
ata4: SATA max UDMA/133 cmd 0x0 ctl 0xE10A8120 bmdma 0x0 irq 38
scsi0 : sata_mv
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ata1.00: qc timeout (cmd 0xec)
ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ata1.00: qc timeout (cmd 0xec)
ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ATA: abnormal status 0x80 on port 0xE10A211C
ata1.00: qc timeout (cmd 0xec)
ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
ata1.00: limiting speed to PIO0
ata1.00: disabled

When it works I see:
sata_mv 0000:00:03.0: version 0.7
sata_mv 0000:00:03.0: 32 slots 4 ports SCSI mode IRQ via INTx
ata1: SATA max UDMA/133 cmd 0x0 ctl 0xE10A2120 bmdma 0x0 irq 38
ata2: SATA max UDMA/133 cmd 0x0 ctl 0xE10A4120 bmdma 0x0 irq 38
ata3: SATA max UDMA/133 cmd 0x0 ctl 0xE10A6120 bmdma 0x0 irq 38
ata4: SATA max UDMA/133 cmd 0x0 ctl 0xE10A8120 bmdma 0x0 irq 38
scsi0 : sata_mv
ata1.00: ATA-6, max UDMA/133, 156301488 sectors: LBA48 NCQ (depth 0/32)
ata1.00: configured for UDMA/133
scsi1 : sata_mv
ata2: no device found (phy stat 00000000)
scsi2 : sata_mv
ata3: no device found (phy stat 00000000)
scsi3 : sata_mv
ata4: no device found (phy stat 00000000)
scsi 0:0:0:0: Direct-Access     ATA      ST380817AS       3.42 PQ: 0
ANSI: 5
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
sda: Write Protect is off
SCSI device sda: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
sda: Write Protect is off
SCSI device sda: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
 sda: sda1 sda2 sda3 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 sda13
sda14 sda15 >
sd 0:0:0:0: Attached scsi disk sda

Note the failure are VERY slow (I don't having timing printks on in the
default configuration).

Also, with 2.6.21.1, it works without a problem (but we want to bring up
2.6.20 on another system
with the GD32144 driver -- which doesn't work on our custom system or
the taiga board.

marty