linux-kernel - Re: libata badness

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Date:	Thu, 31 Jul 2008 15:24:31 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Ben Dooks <ben-linux@...ff.org>
Cc:	Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linuxppc-dev list <linuxppc-dev@...abs.org>
Subject: Re: libata badness


On Jul 31, 2008, at 2:02 PM, Ben Dooks wrote:

> On Thu, Jul 31, 2008 at 01:53:45PM -0500, Kumar Gala wrote:
>> I'm getting the following badness with top of tree on a embedded
>> PowerPC w/a ULI 1575 bridge (M5229 IDE):
>>
>> 02:1f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev  
>> c8)
>>
>> If you need more info let me know.
>>
>> - k
>>
>> ahci 0000:02:1f.1: AHCI 0001.0000 32 slots 4 ports 3 Gbps 0xf impl
>> SATA mode
>> ahci 0000:02:1f.1: flags: ncq sntf ilck pm led clo pmp pio slum part
>> ------------[ cut here ]------------
>> Badness at c021e700 [verbose debug info unavailable]
>
> it would be helpful to compile a kernel with verbose fault information
> turned on.

Doesn't seem to provide too much more info on ppc.  just says the file/ 
line number of the badness.

>> NIP: c021e700 LR: c021e6e8 CTR: c022ce90
>> REGS: ef82bca0 TRAP: 0700   Not tainted  (2.6.27-rc1-00495-g33bd9fe-
>> dirty)
>> MSR: 00029032 <EE,ME,IR,DR>  CR: 22044022  XER: 20000000
>> TASK = ef830000[1] 'swapper' THREAD: ef82a000 CPU: 1
>> GPR00: 00000001 ef82bd50 ef830000 00000000 00009032 00000000 ef0b64fc
>> 00000000
>> GPR08: ef937c10 c022f93f efbfc8e0 ef900b60 22044028 fffdd3ff 0ffe8700
>> c044c17c
>> GPR16: c04d52ec ef82f458 ef82f4f4 ef82f4f4 c044c234 c044c5d8 c044c5d8
>> c044c220
>> GPR24: c044c218 c04d52f0 00000080 c022f940 00000000 c044c244 efbec490
>> 00000000
>> NIP [c021e700] ata_host_activate+0x40/0x10c
>> LR [c021e6e8] ata_host_activate+0x28/0x10c
>> Call Trace:
>> [ef82bd50] [c021e6e8] ata_host_activate+0x28/0x10c (unreliable)
>> [ef82bd80] [c022f48c] ahci_init_one+0x8b4/0xd68
>> [ef82be30] [c01b69c0] pci_device_probe+0x84/0xa8
>> [ef82be50] [c01e5438] driver_probe_device+0xb4/0x1e8
>> [ef82be70] [c01e55f0] __driver_attach+0x84/0x88
>> [ef82be90] [c01e4ba0] bus_for_each_dev+0x5c/0xa4
>> [ef82bec0] [c01e5254] driver_attach+0x24/0x34
>> [ef82bed0] [c01e44b8] bus_add_driver+0x1d8/0x24c
>> [ef82bef0] [c01e5810] driver_register+0x70/0x160
>> [ef82bf10] [c01b6c54] __pci_register_driver+0x64/0xc4
>> [ef82bf30] [c04aaa60] ahci_init+0x28/0x38
>> [ef82bf40] [c048717c] do_one_initcall+0x38/0x1ac
>> [ef82bfb0] [c04874e0] kernel_init+0x1f0/0x1fc
>> [ef82bff0] [c0013b04] kernel_thread+0x44/0x60
>> Instruction dump:
>> 7cbb2b78 90010034 7cda3378 7cf93b78 7c7e1b78 4bff9dbd 7c7f1b79  
>> 408200c8
>> 2f9c0000 409e002c 313bffff 7c09d910 <0f000000> 80010034 7fc3f378
>> 7f24cb78
>> scsi0 : ahci
>> scsi1 : ahci
>> scsi2 : ahci
>> scsi3 : ahci
>> ata1: SATA max UDMA/133 abar m1024@...0006000 port 0x80006100
>> ata2: SATA max UDMA/133 abar m1024@...0006000 port 0x80006180
>> ata3: SATA max UDMA/133 abar m1024@...0006000 port 0x80006200
>> ata4: SATA max UDMA/133 abar m1024@...0006000 port 0x80006280
>> ata1: SATA link down (SStatus 0 SControl 300)
>> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> ata2.00: qc timeout (cmd 0xec)
>> ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> ata2.00: qc timeout (cmd 0xec)
>> ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> ata2.00: qc timeout (cmd 0xec)
>> ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> ata3: SATA link down (SStatus 0 SControl 300)
>> ata4: SATA link down (SStatus 0 SControl 300)
>> scsi4 : pata_ali
>> scsi5 : pata_ali
>> ata5: PATA max UDMA/133 cmd 0x1200 ctl 0x1208 bmdma 0x1220
>> ata6: PATA max UDMA/133 cmd 0x1210 ctl 0x1218 bmdma 0x1228
>
> Looks like you're running into the same problem as I did, with the
> fact that the M5529 is in native mode, but doesn't have any IRQ
> available. Do you know if the bridge chip in it is in routes the
> IRQs internally?

They are routed via an i8259 in the bridge.

- k

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