Re: 2.6.23.17 & 2.6.24.5 and maybe earlier: pata_marvell: need todisable DMA to get rid of '(ATA bus error)', 'ata7.00: status: { DRDY ERR}', 'ata7.00: error: { ICRC ABRT }'

[Martin MOKREJÅ]

Robert Hancock wrote:
> Alan Cox wrote:
> > > > libata.dma=3 will stop DMA being used for CF devices (except those that
> > > > decide to pretend to be ATA classes). This one comes up a lot as 
> > > > many CF
> > > > adapters are simply not adequate for UDMA.
> > > Perhaps the kernel could do this automatically once it sees the
> > > status code?
> >
> > We then hurt all the people with perfectly good working UDMA CF devices.
> > The kernel will eventually fall back from UDMA to PIO but it favours
> > working hardware by default.
>
> I suspect they meant fall back on seeing the ABRT/ICRC error combination 
> - which it does, eventually. Falling back on one occurrence would be too 
> aggressive, though, as they can happen once in a blue moon, so there's 
> little reason to slow down a working setup forever because of it..

Hi, sorry for the delay. I gave it it shot instead of using libata.dma=0:

Linux version 2.6.24.5-default (root@nfssrv) (gcc version 4.1.2 (Gentoo 4.1.2 p1.1)) #1 SMP Thu May 1 13:45:06 Local time zone must be set--see zic m
Command line: root=/dev/sde1 libata.dma=3 udev
...
ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 16 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:03:00.0 to 64
scsi6 : pata_marvell
scsi7 : pata_marvell
ata7: PATA max UDMA/100 cmd 0xcc00 ctl 0xc880 bmdma 0xc400 irq 16
ata8: PATA max UDMA/133 cmd 0xc800 ctl 0xc480 bmdma 0xc408 irq 16
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7.00: ATA-0: Delock 54111 512MB, Ver1.27, max UDMA/33
ata7.00: 1006992 sectors, multi 0: LBA 
ata7.01: ATAPI: ATAPI   DVD D  DH16D2P, HP57, max UDMA/33
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7: EH complete
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
scsi 6:0:0:0: Direct-Access     ATA      Delock 54111 512 Ver1 PQ: 0 ANSI: 5
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sde: sde1
sd 6:0:0:0: [sde] Attached SCSI disk
sd 6:0:0:0: Attached scsi generic sg4 type 0
scsi 6:0:1:0: CD-ROM            ATAPI    DVD D  DH16D2P   HP57 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 48x/48x cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 6:0:1:0: Attached scsi CD-ROM sr0
sr 6:0:1:0: Attached scsi generic sg5 type 5
...
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:02:5f:40:0a/00:00:00:00:00/e0 tag 0 dma 1024 out
        res 51/84:00:5f:40:0a/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:04:63:3f:04/00:00:00:00:00/e0 tag 0 dma 2048 out
        res 51/84:00:63:3f:04/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7: EH complete
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:04:63:3f:04/00:00:00:00:00/e0 tag 0 dma 2048 out
        res 51/84:00:63:3f:04/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/33
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
ata7.00: limiting speed to UDMA/25:PIO4
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:0e:71:00:04/00:00:00:00:00/e0 tag 0 dma 7168 out
        res 51/84:00:71:00:04/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:02:47:80:07/00:00:00:00:00/e0 tag 0 dma 1024 out
        res 51/84:00:47:80:07/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:02:41:80:08/00:00:00:00:00/e0 tag 0 dma 1024 out
        res 51/84:00:41:80:08/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7: EH complete
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:02:41:80:08/00:00:00:00:00/e0 tag 0 dma 1024 out
        res 51/84:00:41:80:08/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata7.00: BMDMA stat 0x64
ata7.00: cmd ca/00:04:47:c2:01/00:00:00:00:00/e0 tag 0 dma 2048 out
        res 51/84:00:47:c2:01/00:00:00:00:00/e0 Emask 0x10 (ATA bus error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ICRC ABRT }
BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 
ata7: soft resetting link
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7.00: configured for UDMA/25
ata7.01: configured for UDMA/33
ata7: EH complete
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 6:0:0:0: [sde] 1006992 512-byte hardware sectors (516 MB)
sd 6:0:0:0: [sde] Write Protect is off
sd 6:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 6:0:0:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA



That doesn't look like a fix to me. I expect the CF device run in PIO4.
Or shall I really ignore these?

Martin
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