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    Subject"qc timeout" error in sata_sil 3114 driver, 2.6.18
    I'm working on a new PowerPC board (8349 based) with a Silicon Image 3114 SATA controller
    connected to a Hitachi drive. When the sata_sil driver loads and tries to find the device,
    I get "qc timeout" errors. I don't know a lot about SATA. Can anyone give me a clue as
    to what could be wrong?

    [ 9.434695] sata_sil 0000:00:10.0: Applying R_ERR on DMA activate FIS errata fix
    [ 9.442102] ata_device_add: ENTER
    [ 9.445425] ata_host_add: ENTER
    [ 9.448749] ata_port_start: prd alloc, virt c0583000, dma 583000
    [ 9.454767] ata1: SATA max UDMA/100 cmd 0xD100E080 ctl 0xD100E08A bmdma 0xD100E000 irq 22
    [ 9.462948] __ata_port_freeze: ata1 port frozen
    [ 9.467471] ata_host_add: ENTER
    [ 9.470732] ata_port_start: prd alloc, virt cff55000, dma ff55000
    [ 9.476830] ata2: SATA max UDMA/100 cmd 0xD100E0C0 ctl 0xD100E0CA bmdma 0xD100E008 irq 22
    [ 9.485000] __ata_port_freeze: ata2 port frozen
    [ 9.489522] ata_host_add: ENTER
    [ 9.492782] ata_port_start: prd alloc, virt c05d4000, dma 5d4000
    [ 9.498794] ata3: SATA max UDMA/100 cmd 0xD100E280 ctl 0xD100E28A bmdma 0xD100E200 irq 22
    [ 9.506965] __ata_port_freeze: ata3 port frozen
    [ 9.511487] ata_host_add: ENTER
    [ 9.514749] ata_port_start: prd alloc, virt c05d6000, dma 5d6000
    [ 9.520759] ata4: SATA max UDMA/100 cmd 0xD100E2C0 ctl 0xD100E2CA bmdma 0xD100E208 irq 22
    [ 9.528930] __ata_port_freeze: ata4 port frozen
    [ 9.533470] ata_device_add: probe begin
    [ 9.537301] scsi0 : sata_sil
    [ 9.540416] ata_port_schedule_eh: port EH scheduled
    [ 9.545313] ata_scsi_error: ENTER
    [ 9.548623] ata_port_flush_task: ENTER
    [ 9.552375] ata_port_flush_task: flush #1
    [ 9.556404] ata_eh_autopsy: ENTER
    [ 9.559716] ata_eh_recover: ENTER
    [ 9.563038] ata_eh_prep_resume: ENTER
    [ 9.566693] ata_eh_prep_resume: EXIT
    [ 9.570262] __ata_port_freeze: ata1 port frozen
    [ 9.886275] ata_std_softreset: ENTER
    [ 9.889842] ata_std_softreset: EXIT, classes[0]=5 [1]=0
    [ 9.895061] ata_std_postreset: ENTER
    [ 9.898632] ata1: SATA link down (SStatus 0 SControl 310)
    [ 9.904023] ata_std_postreset: EXIT, no device
    [ 9.908461] ata_eh_thaw_port: ata1 port thawed
    [ 9.912896] ata_eh_revalidate_and_attach: ENTER
    [ 9.917419] ata_eh_revalidate_and_attach: EXIT
    [ 9.921854] ata_eh_resume: ENTER
    [ 9.925075] ata_eh_resume: EXIT
    [ 9.928210] ata_eh_suspend: ENTER
    [ 9.931518] ata_eh_suspend: EXIT
    [ 9.934739] ata_eh_recover: EXIT, rc=0
    [ 9.938485] ata_scsi_error: EXIT
    [ 9.941709] scsi1 : sata_sil
    [ 9.944792] ata_port_schedule_eh: port EH scheduled
    [ 9.949688] ata_scsi_error: ENTER
    [ 9.952999] ata_port_flush_task: ENTER
    [ 9.956750] ata_port_flush_task: flush #1
    [ 9.960778] ata_eh_autopsy: ENTER
    [ 9.964093] ata_eh_recover: ENTER
    [ 9.967413] ata_eh_prep_resume: ENTER
    [ 9.971069] ata_eh_prep_resume: EXIT
    [ 9.974639] __ata_port_freeze: ata2 port frozen
    [ 10.290287] ata_std_softreset: ENTER
    [ 10.293861] ata_std_softreset: about to softreset, devmask=1
    [ 10.299515] ata_bus_softreset: ata2: bus reset via SRST
    [ 10.458293] ata_dev_classify: found ATA device by sig
    [ 10.463338] ata_std_softreset: EXIT, classes[0]=1 [1]=0
    [ 10.468556] ata_std_postreset: ENTER
    [ 10.472128] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 10.478303] ata_std_postreset: EXIT
    [ 10.481784] ata_eh_thaw_port: ata2 port thawed
    [ 10.486220] ata_eh_revalidate_and_attach: ENTER
    [ 10.490760] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 10.496700] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 10.502654] ata_exec_command_mmio: ata2: cmd 0xEC
    [ 40.506276] ata_port_flush_task: ENTER
    [ 40.510020] ata_port_flush_task: flush #1
    [ 40.514055] __ata_port_freeze: ata2 port frozen
    [ 40.518576] ata2.00: qc timeout (cmd 0xec)
    [ 40.522673] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
    [ 40.528758] ata_eh_revalidate_and_attach: EXIT
    [ 41.034273] ata_eh_prep_resume: ENTER
    [ 41.037925] ata_eh_prep_resume: EXIT
    [ 41.041495] __ata_port_freeze: ata2 port frozen
    [ 41.046020] sata_std_hardreset: ENTER
    [ 41.366292] ata_dev_classify: found ATA device by sig
    [ 41.371336] sata_std_hardreset: EXIT, class=1
    [ 41.375686] ata_std_postreset: ENTER
    [ 41.379258] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 41.385430] ata_std_postreset: EXIT
    [ 41.388913] ata_eh_thaw_port: ata2 port thawed
    [ 41.393349] ata_eh_revalidate_and_attach: ENTER
    [ 41.397887] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 41.403827] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 41.409770] ata_exec_command_mmio: ata2: cmd 0xEC
    [ 71.414275] ata_port_flush_task: ENTER
    [ 71.418016] ata_port_flush_task: flush #1
    [ 71.422049] __ata_port_freeze: ata2 port frozen
    [ 71.426570] ata2.00: qc timeout (cmd 0xec)
    [ 71.430666] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
    [ 71.436751] ata_eh_revalidate_and_attach: EXIT
    [ 71.942273] ata_eh_prep_resume: ENTER
    [ 71.945925] ata_eh_prep_resume: EXIT
    [ 71.949496] __ata_port_freeze: ata2 port frozen
    [ 71.954021] sata_std_hardreset: ENTER
    [ 72.274292] ata_dev_classify: found ATA device by sig
    [ 72.279338] sata_std_hardreset: EXIT, class=1
    [ 72.283688] ata_std_postreset: ENTER
    [ 72.287260] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 72.293433] ata_std_postreset: EXIT
    [ 72.296917] ata_eh_thaw_port: ata2 port thawed
    [ 72.301353] ata_eh_revalidate_and_attach: ENTER
    [ 72.305890] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 72.311831] ata2: ata_dev_select: ENTER, ata2: device 0, wait 1
    [ 72.317774] ata_exec_command_mmio: ata2: cmd 0xEC
    [ 102.322275] ata_port_flush_task: ENTER
    [ 102.326017] ata_port_flush_task: flush #1
    [ 102.330051] __ata_port_freeze: ata2 port frozen
    [ 102.334572] ata2.00: qc timeout (cmd 0xec)
    [ 102.338668] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
    [ 102.344753] ata_eh_revalidate_and_attach: EXIT
    [ 102.850273] ata_eh_prep_resume: ENTER
    [ 102.853926] ata_eh_prep_resume: EXIT
    [ 102.857495] __ata_port_freeze: ata2 port frozen
    [ 102.862020] sata_std_hardreset: ENTER
    [ 103.182291] ata_dev_classify: found ATA device by sig
    [ 103.187335] sata_std_hardreset: EXIT, class=1
    [ 103.191685] ata_std_postreset: ENTER
    [ 103.195257] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
    [ 103.201431] ata_std_postreset: EXIT
    [ 103.204915] ata_eh_thaw_port: ata2 port thawed
    [ 103.209351] ata_eh_revalidate_and_attach: ENTER
    [ 103.213874] ata_eh_revalidate_and_attach: EXIT
    [ 103.218311] ata_eh_resume: ENTER
    [ 103.221529] ata_eh_resume: EXIT
    [ 103.224664] ata_eh_suspend: ENTER
    [ 103.227972] ata_eh_suspend: EXIT
    [ 103.231194] ata_eh_recover: EXIT, rc=0
    [ 103.234942] ata_scsi_error: EXIT
    [ 103.238169] scsi2 : sata_sil
    [ 103.241320] ata_port_schedule_eh: port EH scheduled
    [ 103.246219] ata_scsi_error: ENTER
    [ 103.249530] ata_port_flush_task: ENTER
    [ 103.253282] ata_port_flush_task: flush #1
    [ 103.257311] ata_eh_autopsy: ENTER
    [ 103.260623] ata_eh_recover: ENTER
    [ 103.263944] ata_eh_prep_resume: ENTER
    [ 103.267600] ata_eh_prep_resume: EXIT
    [ 103.271171] __ata_port_freeze: ata3 port frozen
    [ 103.586275] ata_std_softreset: ENTER
    [ 103.589843] ata_std_softreset: EXIT, classes[0]=5 [1]=0
    [ 103.595062] ata_std_postreset: ENTER
    [ 103.598633] ata3: SATA link down (SStatus 0 SControl 310)
    [ 103.604024] ata_std_postreset: EXIT, no device
    [ 103.608462] ata_eh_thaw_port: ata3 port thawed
    [ 103.612898] ata_eh_revalidate_and_attach: ENTER
    [ 103.617421] ata_eh_revalidate_and_attach: EXIT
    [ 103.621857] ata_eh_resume: ENTER
    [ 103.625078] ata_eh_resume: EXIT
    [ 103.628213] ata_eh_suspend: ENTER
    [ 103.631521] ata_eh_suspend: EXIT
    [ 103.634742] ata_eh_recover: EXIT, rc=0
    [ 103.638489] ata_scsi_error: EXIT
    [ 103.641714] scsi3 : sata_sil
    [ 103.644807] ata_port_schedule_eh: port EH scheduled
    [ 103.649704] ata_scsi_error: ENTER
    [ 103.653015] ata_port_flush_task: ENTER
    [ 103.656766] ata_port_flush_task: flush #1
    [ 103.660796] ata_eh_autopsy: ENTER
    [ 103.664108] ata_eh_recover: ENTER
    [ 103.667430] ata_eh_prep_resume: ENTER
    [ 103.671086] ata_eh_prep_resume: EXIT
    [ 103.674657] __ata_port_freeze: ata4 port frozen
    [ 103.990276] ata_std_softreset: ENTER
    [ 103.993846] ata_std_softreset: EXIT, classes[0]=5 [1]=0
    [ 103.999066] ata_std_postreset: ENTER
    [ 104.002638] ata4: SATA link down (SStatus 0 SControl 310)
    [ 104.008030] ata_std_postreset: EXIT, no device
    [ 104.012468] ata_eh_thaw_port: ata4 port thawed
    [ 104.016904] ata_eh_revalidate_and_attach: ENTER
    [ 104.021427] ata_eh_revalidate_and_attach: EXIT
    [ 104.025862] ata_eh_resume: ENTER
    [ 104.029083] ata_eh_resume: EXIT
    [ 104.032219] ata_eh_suspend: ENTER
    [ 104.035526] ata_eh_suspend: EXIT
    [ 104.038748] ata_eh_recover: EXIT, rc=0
    [ 104.042497] ata_scsi_error: EXIT
    [ 104.045722] ata_device_add: host probe begin
    [ 104.049988] ata_device_add: EXIT, returning 4

    --
    Timur Tabi
    Linux Kernel Developer @ Freescale
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