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Message-ID: <9235.1153806649@kao2.melbourne.sgi.com>
Date: Tue, 25 Jul 2006 15:50:49 +1000
From: Keith Owens <kaos@....com.au>
To: linux-kernel@...r.kernel.org
cc: jgarzik@...ox.com
Subject: Re: 2.6.18-rc2 Intermittent failures to detect sata disks
Keith Owens (on Fri, 21 Jul 2006 16:18:47 +1000) wrote:
>I am seeing an intermittent failures to detect sata disks on
>2.6.18-rc2. Dell SC1425, PIIX chipset, gcc 4.1.0 (opensuse 10.1).
>Sometimes it will detect both disks, sometimes only one, sometimes none
>at all. AFAICT it only occurs after a soft reboot, and possibly only
>after an emergency reboot. Alas the problem is so intermittent that it
>is hard to tell what conditions will trigger it.
I applied the debug patch below, turn on prink timing and set
initdefault to 6 so the machine was in a continual soft reboot cycle.
After multiple cycles I got this trace. piix_sata_prereset() reads a
zero config byte for almost 15 seconds then it changes to 0x11,
followed by a hang. Why is the config byte initially zero, and what
makes it change? The normal value for pcs is 0x33.
[ 0.000000] Linux version 2.6.18-rc2-i386-kaos (kaos@...uxbuild) (gcc version 4.1.0 (SUSE Linux)) #130 SMP PREEMPT Tue Jul 25 15:23:18 EST 2006
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
[ 0.000000] BIOS-e820: 0000000000100000 - 000000007ffc0000 (usable)
[ 0.000000] BIOS-e820: 000000007ffc0000 - 000000007ffcfc00 (ACPI data)
[ 0.000000] BIOS-e820: 000000007ffcfc00 - 000000007ffff000 (reserved)
[ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec90000 (reserved)
[ 0.000000] BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved)
[ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
[ 0.000000] BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)
[ 0.000000] 1151MB HIGHMEM available.
[ 0.000000] 896MB LOWMEM available.
[ 0.000000] found SMP MP-table at 000fe710
[ 0.000000] DMI 2.3 present.
[ 0.000000] ACPI: PM-Timer IO Port: 0x808
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[ 0.000000] Processor #0 15:4 APIC version 20
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled)
[ 0.000000] Processor #6 15:4 APIC version 20
[ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] enabled)
[ 0.000000] Processor #1 15:4 APIC version 20
[ 0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] enabled)
[ 0.000000] Processor #7 15:4 APIC version 20
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
[ 0.000000] ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: IOAPIC (id[0x09] address[0xfec80000] gsi_base[32])
[ 0.000000] IOAPIC[1]: apic_id 9, version 32, address 0xfec80000, GSI 32-55
[ 0.000000] ACPI: IOAPIC (id[0x0a] address[0xfec80800] gsi_base[64])
[ 0.000000] IOAPIC[2]: apic_id 10, version 32, address 0xfec80800, GSI 64-87
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] Enabling APIC mode: Flat. Using 3 I/O APICs
[ 0.000000] ACPI: HPET id: 0xffffffff base: 0xfed00000
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] Allocating PCI resources starting at 80000000 (gap: 7ffff000:60001000)
[ 0.000000] Detected 3000.323 MHz processor.
[ 37.143004] Built 1 zonelists. Total pages: 524224
[ 37.143008] Kernel command line: root=/dev/sda10 resume=/dev/sda5 console=tty console=ttyS0,9600 nmi_watchdog=0
[ 37.143196] Enabling fast FPU save and restore... done.
[ 37.143199] Enabling unmasked SIMD FPU exception support... done.
[ 37.143204] Initializing CPU#0
[ 37.143256] CPU 0 irqstacks, hard=c03d1000 soft=c03c9000
[ 37.143260] PID hash table entries: 4096 (order: 12, 16384 bytes)
[ 37.145474] Console: colour VGA+ 80x25
[ 40.544223] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 40.628998] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 40.792755] Memory: 2075304k/2096896k available (1863k kernel code, 20512k reserved, 789k data, 160k init, 1179392k highmem)
[ 40.927000] Checking if this processor honours the WP bit even in supervisor mode... Ok.
[ 41.024141] Using HPET for base-timer
[ 41.144035] Calibrating delay using timer specific routine.. 6004.65 BogoMIPS (lpj=12009311)
[ 41.245205] Mount-cache hash table entries: 512
[ 41.299502] monitor/mwait feature present.
[ 41.348505] using mwait in idle threads.
[ 41.395460] CPU: Trace cache: 12K uops, L1 D cache: 16K
[ 41.458191] CPU: L2 cache: 2048K
[ 41.496838] CPU: Physical Processor ID: 0
[ 41.544841] Intel machine check architecture supported.
[ 41.607378] Intel machine check reporting enabled on CPU#0.
[ 41.674073] CPU0: Intel P4/Xeon Extended MCE MSRs (24) available
[ 41.745967] CPU0: Thermal monitoring enabled
[ 41.797082] Compat vDSO mapped to ffffe000.
[ 41.847165] Checking 'hlt' instruction... OK.
[ 41.912754] SMP alternatives: switching to UP code
[ 41.970194] ACPI: Core revision 20060707
[ 42.022250] CPU0: Intel(R) Xeon(TM) CPU 3.00GHz stepping 03
[ 42.089293] SMP alternatives: switching to SMP code
[ 42.147701] Booting processor 1/1 eip 3000
[ 42.196713] CPU 1 irqstacks, hard=c03d2000 soft=c03ca000
[ 42.270983] Initializing CPU#1
[ 42.350902] Calibrating delay using timer specific routine.. 6000.41 BogoMIPS (lpj=12000825)
[ 42.350931] monitor/mwait feature present.
[ 42.350939] CPU: Trace cache: 12K uops, L1 D cache: 16K
[ 42.350943] CPU: L2 cache: 2048K
[ 42.350946] CPU: Physical Processor ID: 0
[ 42.350957] Intel machine check architecture supported.
[ 42.350964] Intel machine check reporting enabled on CPU#1.
[ 42.350968] CPU1: Intel P4/Xeon Extended MCE MSRs (24) available
[ 42.350973] CPU1: Thermal monitoring enabled
[ 42.351425] CPU1: Intel(R) Xeon(TM) CPU 3.00GHz stepping 03
[ 43.006462] SMP alternatives: switching to SMP code
[ 43.064946] Booting processor 2/6 eip 3000
[ 43.113980] CPU 2 irqstacks, hard=c03d3000 soft=c03cb000
[ 43.188033] Initializing CPU#2
[ 43.266045] Calibrating delay using timer specific routine.. 6000.49 BogoMIPS (lpj=12000980)
[ 43.266069] monitor/mwait feature present.
[ 43.266075] CPU: Trace cache: 12K uops, L1 D cache: 16K
[ 43.266077] CPU: L2 cache: 2048K
[ 43.266080] CPU: Physical Processor ID: 3
[ 43.266088] Intel machine check architecture supported.
[ 43.266095] Intel machine check reporting enabled on CPU#2.
[ 43.266097] CPU2: Intel P4/Xeon Extended MCE MSRs (24) available
[ 43.266101] CPU2: Thermal monitoring enabled
[ 43.266517] CPU2: Intel(R) Xeon(TM) CPU 3.00GHz stepping 03
[ 43.921751] SMP alternatives: switching to SMP code
[ 43.980171] Booting processor 3/7 eip 3000
[ 44.029183] CPU 3 irqstacks, hard=c03d4000 soft=c03cc000
[ 44.103229] Initializing CPU#3
[ 44.181187] Calibrating delay using timer specific routine.. 6000.39 BogoMIPS (lpj=12000787)
[ 44.181215] monitor/mwait feature present.
[ 44.181223] CPU: Trace cache: 12K uops, L1 D cache: 16K
[ 44.181226] CPU: L2 cache: 2048K
[ 44.181229] CPU: Physical Processor ID: 3
[ 44.181240] Intel machine check architecture supported.
[ 44.181248] Intel machine check reporting enabled on CPU#3.
[ 44.181251] CPU3: Intel P4/Xeon Extended MCE MSRs (24) available
[ 44.181256] CPU3: Thermal monitoring enabled
[ 44.181707] CPU3: Intel(R) Xeon(TM) CPU 3.00GHz stepping 03
[ 44.836890] Total of 4 processors activated (24005.95 BogoMIPS).
[ 44.909001] ENABLING IO-APIC IRQs
[ 44.948819] ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 45.164268] checking TSC synchronization across 4 CPUs: passed.
[ 0.018470] Brought up 4 CPUs
[ 0.413561] migration_cost=88,1627
[ 0.455674] NET: Registered protocol family 16
[ 0.508955] ACPI: bus type pci registered
[ 0.556935] PCI: Using MMCONFIG
[ 0.595081] Setting up standard PCI resources
[ 0.653162] ACPI: Interpreter enabled
[ 0.696969] ACPI: Using IOAPIC for interrupt routing
[ 0.756831] ACPI: PCI Root Bridge [PCI0] (0000:00)
[ 0.816680] PCI quirk: region 0800-087f claimed by ICH4 ACPI/GPIO/TCO
[ 0.893736] PCI quirk: region 0880-08bf claimed by ICH4 GPIO
[ 0.961506] PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
[ 1.032409] PCI: PXH quirk detected, disabling MSI for SHPC device
[ 1.106413] PCI: PXH quirk detected, disabling MSI for SHPC device
[ 1.180769] PCI: Transparent bridge - 0000:00:1e.0
[ 1.243265] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 12)
[ 1.323606] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12)
[ 1.404006] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12)
[ 1.486216] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 *10 11 12)
[ 1.566570] ACPI: PCI Interrupt Link [LNKE] (IRQs *3 4 5 6 7 10 11 12)
[ 1.646981] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12) *0, disabled.
[ 1.741304] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12) *0, disabled.
[ 1.835609] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 *6 7 10 11 12)
[ 1.916067] SCSI subsystem initialized
[ 1.960921] PCI: Using ACPI for IRQ routing
[ 2.010954] PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
[ 2.111249] PCI: Bridge: 0000:01:00.0
[ 2.155027] IO window: e000-efff
[ 2.195741] MEM window: fe900000-feafffff
[ 2.245805] PREFETCH window: disabled.
[ 2.292760] PCI: Bridge: 0000:01:00.2
[ 2.336594] IO window: disabled.
[ 2.377314] MEM window: disabled.
[ 2.419072] PREFETCH window: disabled.
[ 2.466028] PCI: Bridge: 0000:00:02.0
[ 2.509863] IO window: e000-efff
[ 2.550586] MEM window: fe700000-feafffff
[ 2.600654] PREFETCH window: disabled.
[ 2.647609] PCI: Bridge: 0000:00:1e.0
[ 2.691444] IO window: d000-dfff
[ 2.732169] MEM window: fe500000-fe6fffff
[ 2.782238] PREFETCH window: f0000000-f7ffffff
[ 2.837515] ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
[ 2.926333] NET: Registered protocol family 2
[ 3.032344] IP route cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 3.117976] TCP established hash table entries: 262144 (order: 9, 3145728 bytes)
[ 3.207978] TCP bind hash table entries: 65536 (order: 7, 786432 bytes)
[ 3.287539] TCP: Hash tables configured (established 262144 bind 65536)
[ 3.366653] TCP reno registered
[ 3.405065] Machine check exception polling timer started.
[ 3.472286] highmem bounce pool size: 64 pages
[ 3.525862] SGI XFS with large block numbers, no debug enabled
[ 3.596163] Initializing Cryptographic API
[ 3.645181] io scheduler noop registered (default)
[ 3.702977] io scheduler anticipatory registered
[ 3.758422] io scheduler deadline registered
[ 3.809765] io scheduler cfq registered
[ 3.855857] Intel E7520/7320/7525 detected.<6>ACPI: Power Button (FF) [PWRF]
[ 3.940723] ACPI Exception (acpi_video-1402): AE_NOT_FOUND, Evaluating _DOD [20060707]
[ 4.035914] ACPI: Video Device [EVGA] (multi-head: no rom: yes post: no)
[ 4.146619] Real Time Clock Driver v1.12ac
[ 4.195686] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
[ 4.289518] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A
[ 4.364454] RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
[ 4.453953] e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
[ 4.526864] e100: Copyright(c) 1999-2005 Intel Corporation
[ 4.592661] tun: Universal TUN/TAP device driver, 1.6
[ 4.653085] tun: (C) 1999-2004 Max Krasnyansky <maxk@...lcomm.com>
[ 4.727108] Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
[ 4.803103] ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
[ 4.898924] ICH5: IDE controller at PCI slot 0000:00:1f.1
[ 4.963511] PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
[ 5.031247] ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 17
[ 5.119972] ICH5: chipset revision 2
[ 5.162758] ICH5: not 100% native mode: will probe irqs later
[ 5.231542] ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:pio
[ 6.056275] hda: TEAC CD-ROM CD-224E, ATAPI CD/DVD-ROM drive
[ 6.797382] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
[ 7.413503] piix_init: pci_module_init
[ 7.458438] ata_piix 0000:00:1f.2: MAP [ P0 -- P1 -- ]
[ 7.520941] ata_pci_init_one: ENTER
[ 7.562711] ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 17
[ 7.651456] ata_device_add: ENTER
[ 7.691122] ata_host_add: ENTER
[ 7.728788] ata_port_start: prd alloc, virt f7b96000, dma 37b96000
[ 7.802715] ata1: SATA max UDMA/133 cmd 0xCCB8 ctl 0xCCB2 bmdma 0xCC80 irq 17
[ 7.888115] __ata_port_freeze: ata1 port frozen
[ 7.942336] ata_host_add: ENTER
[ 7.979969] ata_port_start: prd alloc, virt f7b16000, dma 37b16000
[ 8.053911] ata2: SATA max UDMA/133 cmd 0xCCA0 ctl 0xCC9A bmdma 0xCC88 irq 17
[ 8.139312] __ata_port_freeze: ata2 port frozen
[ 8.193545] ata_device_add: probe begin
[ 8.239460] scsi0 : ata_piix
[ 8.274004] ata_port_schedule_eh: port EH scheduled
[ 8.274008] ata_scsi_error: ENTER
[ 8.274012] ata_port_flush_task: ENTER
[ 8.416896] ata_port_flush_task: flush #1
[ 8.464901] ata_eh_autopsy: ENTER
[ 8.504574] ata_eh_recover: ENTER
[ 8.544261] ata_eh_prep_resume: ENTER
[ 8.588102] ata_eh_prep_resume: EXIT
[ 8.630906] __ata_port_freeze: ata1 port frozen
[ 8.685138] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 8.856181] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 8.933211] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 9.104163] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 9.181254] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 9.352145] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 9.429202] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 9.600128] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 9.677235] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 9.848111] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 9.925188] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 10.096094] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 10.173137] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 10.344076] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 10.421187] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 10.592059] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 10.669115] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 10.840042] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 10.917065] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 11.088024] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 11.165114] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 11.332003] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 11.409103] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 11.579985] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 11.657045] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 11.827968] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 11.904997] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 12.075951] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 12.152981] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 12.323934] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 12.400962] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 12.571916] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 12.649028] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 12.819899] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 12.897009] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 13.067882] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 13.144983] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 13.315864] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 13.392957] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 13.563847] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 13.640909] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 13.811830] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 13.888865] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 14.059813] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 14.136921] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 14.307795] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 14.384878] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 14.555778] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 14.632835] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 14.803761] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 14.880794] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 15.051743] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 15.128857] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 15.299726] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 15.376810] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 15.547709] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 15.624754] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 15.791693] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 15.868745] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 16.035666] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 16.112739] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 16.283648] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 16.360689] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 16.531631] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 16.608729] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 16.779614] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 16.856696] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 17.027596] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 17.104661] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 17.275579] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 17.352605] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 17.523562] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 17.600664] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 17.771545] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 17.848627] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 18.019527] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 18.096587] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 18.267510] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 18.344533] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 18.515493] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 18.592572] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 18.763476] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 18.840502] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 19.011458] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 19.090356] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 19.263437] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 19.340547] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 19.511420] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 19.588493] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 19.759402] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 19.836448] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 20.007385] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 20.084412] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 20.255368] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 20.332477] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 20.499346] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 20.576386] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 20.743325] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 20.820394] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 20.991308] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 21.068333] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 21.239290] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 21.316365] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 21.487273] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 21.564303] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 21.735256] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 21.812378] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 21.983238] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 22.060330] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 22.231221] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 22.308290] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 22.479204] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 22.556260] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 22.727187] piix_sata_prereset: ata1: LEAVE, pcs=0x0 present_mask=0x0
[ 22.804229] piix_sata_prereset: ata1: ENTER, pcs=0x0 base=0
[ 22.975169] piix_sata_prereset: ata1: LEAVE, pcs=0x11 present_mask=0x1
[ 23.212077] ata1.00: ATA-6, max UDMA/100, 156250000 sectors: LBA
[ 23.285031] ata1.00: ata1: dev 0 multi count 8
[ 23.339104] ata1.00: configured for UDMA/100
[ 23.390163] scsi1 : ata_piix
Debug patch:
---
drivers/scsi/ata_piix.c | 5 +++++
include/linux/libata.h | 4 ++++
2 files changed, 9 insertions(+)
Index: linux/drivers/scsi/ata_piix.c
===================================================================
--- linux.orig/drivers/scsi/ata_piix.c
+++ linux/drivers/scsi/ata_piix.c
@@ -489,6 +489,7 @@ static void piix_pata_error_handler(stru
ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL,
ata_std_postreset);
}
+int ata_debug = 1;
/**
* piix_sata_prereset - prereset for SATA host controller
@@ -514,6 +515,7 @@ static int piix_sata_prereset(struct ata
int port, i;
u8 pcs;
+repeat:
pci_read_config_byte(pdev, ICH5_PCS, &pcs);
DPRINTK("ata%u: ENTER, pcs=0x%x base=%d\n", ap->id, pcs, base);
@@ -546,6 +548,9 @@ static int piix_sata_prereset(struct ata
DPRINTK("ata%u: LEAVE, pcs=0x%x present_mask=0x%x\n",
ap->id, pcs, present_mask);
+ if (pcs == 0)
+ goto repeat;
+ ata_debug = 0;
if (!present_mask) {
ata_port_printk(ap, KERN_INFO, "SATA port has no device.\n");
Index: linux/include/linux/libata.h
===================================================================
--- linux.orig/include/linux/libata.h
+++ linux/include/linux/libata.h
@@ -61,6 +61,10 @@
#define VPRINTK(fmt, args...)
#endif /* ATA_DEBUG */
+extern int ata_debug;
+#undef DPRINTK
+#define DPRINTK(fmt, args...) if (ata_debug) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
+
#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
/* NEW: debug levels */
-
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