Cc'ing Intel people and Jeff. Hi! Any ideas what's going on with the following? In short, on sandy bridge ahci + intel g2 ssd, doing HOST_RESET during initialization makes the first reset timeout inducing 10 sec delay. Thanks. On Sun, May 22, 2011 at 08:57:05AM -0400, Andrew Lutomirski wrote: > I have a Sandy Bridge laptop with an SSD (Intel G2). On startup and > resume, I get a ten-second delay or so, COMRESET failed, and then the > disk comes up. On Windows, or in compatibility mode, or with > libahci.skip_host_reset=1, the disk comes up instantly. I have a > similar problem on a Q67 desktop machine with a different brand SSD. > One of these systems has ATA security enabled, and the other does not. > > I have this problem on 2.6.38 and 2.6.39, and I'd be happy to test > patches or other things. > > good: > > [ 0.662024] ahci 0000:00:1f.2: version 3.0 > [ 0.662035] ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 > [ 0.662091] ahci 0000:00:1f.2: irq 42 for MSI/MSI-X > [ 0.662119] ahci: SSS flag set, parallel bus scan disabled > [ 0.662128] ahci 0000:00:1f.2: skipping global host reset > [ 0.664096] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 > Gbps 0x13 impl SATA mode > [ 0.664105] ahci 0000:00:1f.2: flags: 64bit ncq sntf ilck stag pm > led clo pio slum part ems sxs apst > [ 0.664117] ahci 0000:00:1f.2: setting latency timer to 64 > [ 0.668557] scsi0 : ahci > [ 0.668630] scsi1 : ahci > [ 0.668687] scsi2 : ahci > [ 0.668741] scsi3 : ahci > [ 0.668797] scsi4 : ahci > [ 0.668852] scsi5 : ahci > [ 0.669236] ata1: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628100 irq 42 > [ 0.669239] ata2: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628180 irq 42 > [ 0.669241] ata3: DUMMY > [ 0.669241] ata4: DUMMY > [ 0.669244] ata5: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628300 irq 42 > [ 0.669245] ata6: DUMMY > > ... > > [ 0.975730] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > [ 0.976165] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded > [ 0.976168] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE > LOCK) filtered out > [ 0.976171] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) > filtered out > [ 0.976510] ata1.00: ATA-7: INTEL SSDSA2M160G2GC, 2CV102HA, max UDMA/133 > [ 0.976520] ata1.00: 312581808 sectors, multi 16: LBA48 NCQ (depth 31/32) > [ 0.977032] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded > [ 0.977036] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE > LOCK) filtered out > [ 0.977038] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) > filtered out > [ 0.977323] ata1.00: configured for UDMA/133 > [ 0.977470] scsi 0:0:0:0: Direct-Access ATA INTEL > SSDSA2M160 2CV1 PQ: 0 ANSI: 5 > [ 0.977597] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [ 0.977709] sd 0:0:0:0: [sda] 312581808 512-byte logical blocks: > (160 GB/149 GiB) > [ 0.977809] sd 0:0:0:0: [sda] Write Protect is off > [ 0.977811] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 > [ 0.977841] sd 0:0:0:0: [sda] Write cache: enabled, read cache: > enabled, doesn't support DPO or FUA > [ 0.978060] sda: detected capacity change from 0 to 160041885696 > [ 0.978323] sda: sda1 sda2 sda3 > [ 0.978628] sd 0:0:0:0: [sda] Attached SCSI disk > > bad: > > [ 0.696979] ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 > [ 0.697146] ahci: SSS flag set, parallel bus scan disabled > [ 0.708221] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 > Gbps 0x13 impl SATA mode > [ 0.708403] ahci 0000:00:1f.2: flags: 64bit ncq sntf ilck stag pm > led clo pio slum part ems sxs apst > [ 0.712672] scsi0 : ahci > [ 0.712833] scsi1 : ahci > [ 0.712980] scsi2 : ahci > [ 0.713127] scsi3 : ahci > [ 0.713286] scsi4 : ahci > [ 0.713432] scsi5 : ahci > [ 0.713892] ata1: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628100 irq 42 > [ 0.714038] ata2: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628180 irq 42 > [ 0.714197] ata3: DUMMY > [ 0.714287] ata4: DUMMY > [ 0.714377] ata5: SATA max UDMA/133 abar m2048@0x92628000 port > 0x92628300 irq 42 > [ 0.714523] ata6: DUMMY > > ... > > [ 6.079327] ata1: link is slow to respond, please be patient (ready=0) > [ 10.714326] ata1: COMRESET failed (errno=-16) > [ 11.018951] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > [ 11.020746] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE > LOCK) filtered out > [ 11.020897] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) > filtered out > [ 11.021272] ata1.00: ATA-7: INTEL SSDSA2M160G2GC, 2CV102HA, max UDMA/133 > [ 11.021409] ata1.00: 312581808 sectors, multi 16: LBA48 NCQ (depth 31/32) > [ 11.021914] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE > LOCK) filtered out > [ 11.022061] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) > filtered out > [ 11.022434] ata1.00: configured for UDMA/133 > [ 11.022671] scsi 0:0:0:0: Direct-Access ATA INTEL > SSDSA2M160 2CV1 PQ: 0 ANSI: 5 > [ 11.022958] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [ 11.023030] sd 0:0:0:0: [sda] 312581808 512-byte logical blocks: > (160 GB/149 GiB) > [ 11.023116] sd 0:0:0:0: [sda] Write Protect is off > [ 11.023144] sd 0:0:0:0: [sda] Write cache: enabled, read cache: > enabled, doesn't support DPO or FUA > [ 11.023338] sda: detected capacity change from 0 to 160041885696 > [ 11.023560] sda: sda1 sda2 sda3 > [ 11.023897] sd 0:0:0:0: [sda] Attached SCSI disk > [ 11.327544] ata2: SATA link down (SStatus 0 SControl 300) > [ 11.632156] ata5: SATA link down (SStatus 0 SControl 300) -- tejun -- To unsubscribe from 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