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=/dev/sda of=/dev/null bs=4k 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 res 50/00:3e:e0:df:01/00:00:00:00:00/e0 Emask 0x1 (device 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=0x00 driverbyte=0x08 sd 1:0:0:0: [sda] Sense Key : 0xb [current] [descriptor] Descriptor sense data with sense descriptors (in hex): 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 00 01 df e0 sd 1:0:0:0: [sda] ASC=0x0 ASCQ=0x0 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=/dev/sda of=/dev/null bs=4k 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 res 50/00:3e:5c:6e:00/00:00:00:00:00/e0 Emask 0x1 (device 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=0x00 driverbyte=0x08 sd 1:0:0:0: [sda] Sense Key : 0xb [current] [descriptor] Descriptor sense data with sense descriptors (in hex): 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 00 00 6e 5c sd 1:0:0:0: [sda] ASC=0x0 ASCQ=0x0 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 unknown root@mpc8315e-rdb:~# hdparm -i /dev/sda /dev/sda: Model=Solidata X SSD , FwRev=0955 , SerialNo=<...> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=0kB, MaxMultSect=128, MultSect=?1? CurCHS=16383/16/63, CurSects=16514064, LBA=no IORDY=no, tPIO={min:240,w/IORDY:120} PIO modes: pio0 pio3 pio4 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 AdvancedPM=yes: disabled (255) WriteCache=disabled Drive conforms to: Unspecified: ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7 * signifies the current active mode -- Leon -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html