I tried to convert a machine with an Intel 815EP chipset
from IDE to libata. There's a single master disk on the
first channel, and a single master CDROM on the second.
With kernel 2.6.21-rc3 and the IDE PIIX driver things work fine:
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH2: IDE controller at PCI slot 0000:00:1f.1
ICH2: chipset revision 5
ICH2: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: IC35L080AVVA07-0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: CRD-8320B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 160836480 sectors (82348 MB) w/1863KiB Cache, CHS=65535/16/63, UDMA(100)
hda: cache flushes supported
hda: hda1 hda2 hda3 hda4 < hda5 hda6 >
...
hdc: ATAPI 32X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
But with 2.6.21-rc3 and ata_piix only the disk is detected,
and there is a lot of EH activity on the second channel:
libata version 2.20 loaded.
...
ata_piix 0000:00:1f.1: version 2.10
PCI: Setting latency timer of device 0000:00:1f.1 to 64
ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001f000 irq 14
ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001f008 irq 15
scsi0 : ata_piix
ata1.00: ATA-5: IC35L080AVVA07-0, VA4OA52A, max UDMA/100
ata1.00: 160836480 sectors, multi 16: LBA
ata1.00: configured for UDMA/100
scsi1 : ata_piix
ATA: abnormal status 0x7F on port 0x00010177
ATA: abnormal status 0x7F on port 0x00010177
ata2.00: ATAPI, max MWDMA2
ata2.00: configured for MWDMA2
scsi 0:0:0:0: Direct-Access ATA IC35L080AVVA07-0 VA4O PQ: 0 ANSI: 5
SCSI device sda: 160836480 512-byte hdwr sectors (82348 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
SCSI device sda: 160836480 512-byte hdwr sectors (82348 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
sd 0:0:0:0: Attached scsi disk sda
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 data 36 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: soft resetting port
ATA: abnormal status 0x7F on port 0x00010177
ATA: abnormal status 0x7F on port 0x00010177
ata2.00: configured for MWDMA2
ata2: EH complete
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 data 36 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: soft resetting port
ATA: abnormal status 0x7F on port 0x00010177
ATA: abnormal status 0x7F on port 0x00010177
ata2.00: configured for MWDMA2
ata2: EH complete
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 data 36 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: soft resetting port
ATA: abnormal status 0x7F on port 0x00010177
ATA: abnormal status 0x7F on port 0x00010177
ata2.00: configured for MWDMA2
ata2: EH complete
ata2.00: limiting speed to MWDMA1:PIO4
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 data 36 in
res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: soft resetting port
ATA: abnormal status 0x7F on port 0x00010177
ATA: abnormal status 0x7F on port 0x00010177
ata2.00: configured for MWDMA1
ata2: EH complete
At this point libata gave up on the second channel.
With the CDROM connected to the PATA port on a Promise TX2plus,
things go a little better:
sata_promise 0000:02:02.0: version 2.00
sata_promise PATA port found
ata3: SATA max UDMA/133 cmd 0xe081e200 ctl 0xe081e238 bmdma 0x00000000 irq 22
ata4: SATA max UDMA/133 cmd 0xe081e280 ctl 0xe081e2b8 bmdma 0x00000000 irq 22
ata5: PATA max UDMA/133 cmd 0xe081e300 ctl 0xe081e338 bmdma 0x00000000 irq 22
scsi2 : sata_promise
ata3: SATA link down (SStatus 0 SControl 300)
scsi3 : sata_promise
ata4: SATA link down (SStatus 0 SControl 300)
scsi4 : sata_promise
ATA: abnormal status 0x58 on port 0xe081e31c
ATA: abnormal status 0x58 on port 0xe081e31c
ATA: abnormal status 0x58 on port 0xe081e31c
ATA: abnormal status 0x58 on port 0xe081e31c
ATA: abnormal status 0x58 on port 0xe081e31c
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x101)
ata5.00: ATAPI, max MWDMA2
ata5.00: Drive reports diagnostics failure. This may indicate a drive
ata5.00: fault or invalid emulation. Contact drive vendor for information.
ata5.00: configured for MWDMA2
scsi 4:0:0:0: CD-ROM GoldStar CD-ROM CRD-8320B 1.12 PQ: 0 ANSI: 5
but shortly thereafter EH triggers:
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
ata5.00: qc timeout (cmd 0xa1)
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x104)
ata5.00: revalidation failed (errno=-5)
ata5: failed to recover some devices, retrying in 5 secs
ata5: soft resetting port
ata5.00: configured for MWDMA2
ata5: EH complete
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
ata5.00: qc timeout (cmd 0xa1)
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x104)
ata5.00: revalidation failed (errno=-5)
ata5: failed to recover some devices, retrying in 5 secs
ata5: soft resetting port
ata5.00: configured for MWDMA2
ata5: EH complete
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
ata5.00: qc timeout (cmd 0xa1)
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x104)
ata5.00: revalidation failed (errno=-5)
ata5: failed to recover some devices, retrying in 5 secs
ata5: soft resetting port
ata5.00: configured for MWDMA2
ata5: EH complete
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
ata5.00: qc timeout (cmd 0xa1)
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x104)
ata5.00: revalidation failed (errno=-5)
ata5: failed to recover some devices, retrying in 5 secs
ata5: soft resetting port
ata5.00: configured for MWDMA2
ata5: EH complete
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
ata5.00: qc timeout (cmd 0xa1)
ata5.00: failed to IDENTIFY (I/O error, err_mask=0x104)
ata5.00: revalidation failed (errno=-5)
ata5: failed to recover some devices, retrying in 5 secs
ata5: soft resetting port
ata5.00: configured for MWDMA2
ata5: EH complete
pdc_error_intr: port_status 0x20200000 serror 0x00000000
ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata5.00: (port_status 0x20200000)
ata5.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res ff/ff:ff:ff:ff:ff/00:00:00:00:00/ff Emask 0x3 (HSM violation)
ata5: soft resetting port
/Mikael
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