Hi Hector:
What's happen before "> [    7.073106] EXT4-fs (sda2): re-mounted.
Opts: errors=remount-ro"?
I re-based the patches to Sascha's imx-features branch, my sata device can work.
Test sw environment:  Sascha's imx-features branch,
Test hw environment: iMX53 loco board, 32G sandisk ssd, tftp download
the kernel image,
 and the nfs type rootfs is mounted.

loop: module loaded
ahci: SSS flag set, parallel bus scan disabled
ahci imx53-ahci.0: AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl platform mode
ahci imx53-ahci.0: flags: ncq sntf stag pm led clo only pmp pio slum part ccc
scsi0 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x10000000-0x10000fff] port 0x100 irq 28
FEC Ethernet Driver
fec_enet_mii_bus: probed
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
mousedev: PS/2 mouse device common for all mice
input: mma8450 as /devices/virtual/input/input0
i2c /dev entries driver
imx2-wdt imx2-wdt.0: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0)
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: no vmmc regulator found
mmc0: SDHCI controller on sdhci-esdhc-imx53.0 [sdhci-esdhc-imx53.0] using DMA
mmc1: no vmmc regulator found
mmc1: SDHCI controller on sdhci-esdhc-imx53.2 [sdhci-esdhc-imx53.2] using DMA
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 2
input: gpio-keys as /devices/platform/gpio-keys/input/input1
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: Freescale FEC PHY driver [SMSC LAN8710/LAN8720]
(mii_bus:phy_addr=1:00, irq=-1)
mmc0: host does not support reading read-only switch. assuming write-enable.
mmc0: new high speed SDHC card at address 0001
mmcblk0: mmc0:0001 00000 3.79 GiB
 mmcblk0: p1 p2 p3
ata1: softreset failed (device not ready)
ata1: applying PMP SRST workaround and retrying
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata1.00: ATA-8: SanDisk SSD P4 32GB, SSD 8.00, max UDMA/133
ata1.00: 62533296 sectors, multi 1: LBA48
ata1.00: configured for UDMA/133
scsi 0:0:0:0: Direct-Access     ATA      SanDisk SSD P4 3 SSD  PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 62533296 512-byte logical blocks: (32.0 GB/29.8 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
 sda: sda1 sda2
sd 0:0:0:0: [sda] Attached SCSI disk
PHY: 1:00 - Link is Up - 100/Full
Sending DHCP requests ., OK

Best Regards
Richard Zhu

On 31 August 2011 20:57, Hector Oron [off-list ref] wrote:

Hello,

2011/8/31 Richard Zhu [off-list ref]:

quoted

Hi Hector:
Thanks for your help to tests these patches.

Note I rebased this patches against 'imx-features' branch on Sascha's tree.
I am noticing some obscure (to me) messages from kernel:

[ ? ?6.874694] Adding 9767516k swap on /dev/sda3. ?Priority:-1
extents:1 across:9767516k
[ ? ?7.073106] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[ ? ?7.708399] ata1.00: exception Emask 0x12 SAct 0x3 SErr 0x1280500
action 0x6 frozen
[ ? ?7.716219] ata1.00: irq_stat 0x08000000, interface fatal error
[ ? ?7.722216] ata1: SError: { UnrecovData Proto 10B8B BadCRC TrStaTrns }
[ ? ?7.728780] ata1.00: failed command: READ FPDMA QUEUED
[ ? ?7.733995] ata1.00: cmd 60/00:00:f2:11:32/01:00:00:00:00/40 tag 0
ncq 131072 in
[ ? ?7.734002] ? ? ? ? ?res 40/00:04:f2:11:32/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? ?7.749468] ata1.00: status: { DRDY }
[ ? ?7.753176] ata1.00: failed command: READ FPDMA QUEUED
[ ? ?7.758356] ata1.00: cmd 60/18:08:c2:14:32/00:00:00:00:00/40 tag 1
ncq 12288 in
[ ? ?7.758363] ? ? ? ? ?res 40/00:04:f2:11:32/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? ?7.773739] ata1.00: status: { DRDY }
[ ? ?7.777448] ata1: hard resetting link
[ ? ?8.750427] ata1: softreset failed (device not ready)
[ ? ?8.755551] ata1: applying PMP SRST workaround and retrying
[ ? ?8.960435] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ ? ?8.981938] ata1.00: configured for UDMA/133
[ ? ?8.986535] ata1: EH complete
[ ? 12.147912] eth0: Freescale FEC PHY driver [Generic PHY]
(mii_bus:phy_addr=1:00, irq=-1)
[ ? 12.521870] ata1.00: exception Emask 0x12 SAct 0xf SErr 0x800500
action 0x6 frozen
[ ? 12.529518] ata1.00: irq_stat 0x08000000, interface fatal error
[ ? 12.535546] ata1: SError: { UnrecovData Proto LinkSeq }
[ ? 12.540851] ata1.00: failed command: READ FPDMA QUEUED
[ ? 12.546039] ata1.00: cmd 60/00:00:a2:19:2c/01:00:00:00:00/40 tag 0
ncq 131072 in
[ ? 12.546046] ? ? ? ? ?res 40/00:14:7a:aa:2c/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? 12.561519] ata1.00: status: { DRDY }
[ ? 12.565209] ata1.00: failed command: READ FPDMA QUEUED
[ ? 12.570419] ata1.00: cmd 60/00:08:1a:e9:2c/01:00:00:00:00/40 tag 1
ncq 131072 in
[ ? 12.570426] ? ? ? ? ?res 40/00:14:7a:aa:2c/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? 12.585890] ata1.00: status: { DRDY }
[ ? 12.589578] ata1.00: failed command: READ FPDMA QUEUED
[ ? 12.594776] ata1.00: cmd 60/00:10:7a:aa:2c/01:00:00:00:00/40 tag 2
ncq 131072 in
[ ? 12.594783] ? ? ? ? ?res 40/00:14:7a:aa:2c/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? 12.610240] ata1.00: status: { DRDY }
[ ? 12.613945] ata1.00: failed command: READ FPDMA QUEUED
[ ? 12.619118] ata1.00: cmd 60/e0:18:1a:10:2c/00:00:00:00:00/40 tag 3
ncq 114688 in
[ ? 12.619125] ? ? ? ? ?res 40/00:14:7a:aa:2c/00:00:00:00:00/40 Emask
0x12 (ATA bus error)
[ ? 12.634583] ata1.00: status: { DRDY }
[ ? 12.638292] ata1: hard resetting link
[ ? 13.790424] ata1: softreset failed (device not ready)
[ ? 13.795543] ata1: applying PMP SRST workaround and retrying
[ ? 14.000437] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ ? 14.021749] ata1.00: configured for UDMA/133
[ ? 14.026836] ata1: EH complete
[ ? 14.140774] PHY: 1:00 - Link is Up - 100/Full


Best regards,
--
?H?ctor Or?n ?-.. . -... .. .- -. ? -.. . ...- . .-.. --- .--. . .-.