Re: 2.6.30-rc6: Problem with an SSD disk on Freescale PowerPC mpc8315e-rdb, works fine on x86

[Leon Woestenberg <leon.woestenberg@gmail.com>]

Hello,


I found this is a regression compared with an older kernel. I have
tested the same setup with the Freescale LTIB BSP 2008-06-27 BSP
kernel*, keeping the user space and hardware setup exactly identical.
Under that kernel, no errors occur.

Also I found the error only occurs during *reading* the SSD disk under
Linux 2.6.30-rc6, writing seems unaffected.

As the same Freescale SATA controller IP is used in the new 8536E
processor (and others), I would like to help to solve this issue
before trying 8536E hardware.

Regards,

Leon.

*
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=3DMPC8315E&n=
odeId=3D0162468rH3bTdGJk191439&fpsp=3D1&tab=3DDesign_Tools_Tab#
Split out patches available from http://www.bitshrine.org/gpp/


On Tue, Jun 9, 2009 at 11:26 AM, Leon
Woestenberg<leon.woestenberg@gmail.com> wrote:
> Adding the sata_fsl.c developers to the recipients:
>
> On Mon, Jun 8, 2009 at 4:59 PM, Leon
> Woestenberg<leon.woestenberg@gmail.com> wrote:
>> Hello,
>>
>> using 2.6.30-rc6, I get the following problems when I read from a SSD
>> disk, connected to the
>> 3.0 Gb SATA controller of the MPC8315E SoC rev 1.0 running Linux 2.6.30-=
rc6.
>>
>> Below see the output from two dd read runs.
>>
>> The disk behaves fine on a x86 box.
>>
>> What I can do to (help) pin-point the problem?
>>
>> Regards,
>>
>> Leon.
>>
>>
>> root@mpc8315e-rdb:~# dd if=3D/dev/sda of=3D/dev/null bs=3D4k
>> ata2: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0x2 frozen
>> ata2.00: cmd c8/00:3e:1e:e0:01/00:00:00:00:00/e0 tag 0 dma 31744 in
>> =A0 =A0 =A0 =A0 res 50/00:3e:e0:df:01/00:00:00:00:00/e0 Emask 0x1 (devic=
e error)
>> ata2.00: status: { DRDY }
>> ata2: hard resetting link
>> ata2: Signature Update detected @ 3528 msecs
>> ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
>> ata2.00: configured for UDMA/133
>> sd 1:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08
>> sd 1:0:0:0: [sda] Sense Key : 0xb [current] [descriptor]
>> Descriptor sense data with sense descriptors (in hex):
>> =A0 =A0 =A0 =A072 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00
>> =A0 =A0 =A0 =A000 01 df e0
>> sd 1:0:0:0: [sda] ASC=3D0x0 ASCQ=3D0x0
>> end_request: I/O error, dev sda, sector 122910
>> __ratelimit: 52 callbacks suppressed
>> Buffer I/O error on device sda, logical block 122910
>> Buffer I/O error on device sda, logical block 122911
>> Buffer I/O error on device sda, logical block 122912
>> Buffer I/O error on device sda, logical block 122913
>> Buffer I/O error on device sda, logical block 122914
>> Buffer I/O error on device sda, logical block 122915
>> Buffer I/O error on device sda, logical block 122916
>> Buffer I/O error on device sda, logical block 122917
>> Buffer I/O error on device sda, logical block 122918
>> Buffer I/O error on device sda, logical block 122919
>> ata2: EH complete
>> dd: /dev/sda: Input/output error
>>
>>
>> root@mpc8315e-rdb:~# dd if=3D/dev/sda of=3D/dev/null bs=3D4k
>> ata2: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0x2 frozen
>> ata2.00: cmd c8/00:32:9a:6e:00/00:00:00:00:00/e0 tag 0 dma 25600 in
>> =A0 =A0 =A0 =A0 res 50/00:3e:5c:6e:00/00:00:00:00:00/e0 Emask 0x1 (devic=
e error)
>> ata2.00: status: { DRDY }
>> ata2: hard resetting link
>> ata2: Signature Update detected @ 3528 msecs
>> ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
>> ata2.00: configured for UDMA/133
>> sd 1:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08
>> sd 1:0:0:0: [sda] Sense Key : 0xb [current] [descriptor]
>> Descriptor sense data with sense descriptors (in hex):
>> =A0 =A0 =A0 =A072 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00
>> =A0 =A0 =A0 =A000 00 6e 5c
>> sd 1:0:0:0: [sda] ASC=3D0x0 ASCQ=3D0x0
>> end_request: I/O error, dev sda, sector 28314
>> __ratelimit: 52 callbacks suppressed
>> Buffer I/O error on device sda, logical block 28314
>> Buffer I/O error on device sda, logical block 28315
>> Buffer I/O error on device sda, logical block 28316
>> Buffer I/O error on device sda, logical block 28317
>> Buffer I/O error on device sda, logical block 28318
>> Buffer I/O error on device sda, logical block 28319
>> Buffer I/O error on device sda, logical block 28320
>> Buffer I/O error on device sda, logical block 28321
>> Buffer I/O error on device sda, logical block 28322
>> Buffer I/O error on device sda, logical block 28323
>> ata2: EH complete
>> dd: /dev/sda: Input/output error
>>
>>
>> root@mpc8315e-rdb:~# uname -a
>> Linux mpc8315e-rdb 2.6.30-rc6 #1 Mon Jun 8 15:54:00 CEST 2009 ppc unknow=
n
>>
>> root@mpc8315e-rdb:~# hdparm -i /dev/sda
>>
>> /dev/sda:
>>
>> =A0Model=3DSolidata X SSD =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0, FwRev=3D0955 =A0 =A0, SerialNo=3D<...>
>> =A0Config=3D{ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
>> =A0RawCHS=3D16383/16/63, TrkSize=3D0, SectSize=3D0, ECCbytes=3D0
>> =A0BuffType=3Dunknown, BuffSize=3D0kB, MaxMultSect=3D128, MultSect=3D?1?
>> =A0CurCHS=3D16383/16/63, CurSects=3D16514064, LBA=3Dno
>> =A0IORDY=3Dno, tPIO=3D{min:240,w/IORDY:120}
>> =A0PIO modes: =A0pio0 pio3 pio4
>> =A0UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5
>> =A0AdvancedPM=3Dyes: disabled (255) WriteCache=3Ddisabled
>> =A0Drive conforms to: Unspecified: =A0ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-=
6
>> ATA/ATAPI-7
>>
>> =A0* signifies the current active mode
>>
>>
>>
>> --
>> Leon
>>
>
>
>
> --
> Leon
>



--=20
Leon