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    SubjectRe: [PATCH 2.6.32.3] ahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs
    Date
    Jeff Garzik <jgarzik@pobox.com> writes:

    > I'm not sure I understand your point. Are there ahci problems with
    > the generic entries, that remain unresolved?

    It seems JMB363 on MSI Neo2 motherboard (P45 + ICH10R) still doesn't
    work correctly, flooding the kernel logs. No SATA devices connected,
    a CD-ROM connected to PATA (and it works fine). I've sent a report to
    the IDE list some time ago, please let me know if you need more details
    or testing etc.

    JMB363 set in BIOS setup to non-RAID mode (it seems this means disabling
    the JMB BIOS). Last tested with 2.6.32.1 x86-64 SMP. IRQ 16 is shared.

    Currently the IRQ in PCI registers is 10 (JMB363 SATA is not handled),
    I can enable and check again if needed.

    02:00.0 SATA controller: JMicron Technologies, Inc. 20360/20363 Serial ATA Controller (rev 03) (prog-if 01 [AHCI 1.0])
    Subsystem: Micro-Star International Co., Ltd. Device 7512
    Control: I/O+ Mem+ BusMaster+ the_rest-
    Status: Cap+ the_rest-
    Latency: 0, Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 10
    Region 5: Memory at fe9fe000 (32-bit, non-prefetchable) [size=8K]
    Capabilities: <access denied>

    ahci 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
    ahci 0000:02:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 0x3 impl SATA mode
    ahci 0000:02:00.0: flags: 64bit ncq pm led clo pmp pio slum part
    ahci 0000:02:00.0: setting latency timer to 64
    scsi6 : ahci
    scsi7 : ahci
    ata7: SATA max UDMA/133 abar m8192@0xfe9fe000 port 0xfe9fe100 irq 16
    ata8: SATA max UDMA/133 abar m8192@0xfe9fe000 port 0xfe9fe180 irq 16
    ata8: SATA link down (SStatus 0 SControl 300)
    ata7: SATA link down (SStatus 0 SControl 300)

    then every few seconds (ata8 only, nothing on ata7):

    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 300)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 300)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4060000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { PHYInt CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 310)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 310)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 310)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 310)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps
    ata8: hard resetting link
    ata8: SATA link down (SStatus 0 SControl 310)
    ata8: EH complete
    ata8: exception Emask 0x10 SAct 0x0 SErr 0x4060000 action 0xe frozen
    ata8: irq_stat 0x00000040, connection status changed
    ata8: SError: { PHYInt CommWake DevExch }
    ata8: limiting SATA link speed to 1.5 Gbps

    It seems it worked without the above few times (according to the logs),
    though I can't repeat it even with the same kernel version.
    Maybe setting the mode to RAID (= enabling the JMB BIOS) would fix it?
    I can check if there is non-zero possibility.

    I can't rule out a hw problem, though I think other people had similar
    problems with this chip.
    --
    Krzysztof Halasa


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