On Wed, May 25, 2011 at 5:36 AM, Tejun Heo <tj@xxxxxxxxxx> wrote: > 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. On my desktop box, I have three SATA devices: a Sandforce-based SSD, a normal hard drive, and a CD. Only the SSD has the problem, and libahci.skip_host_reset=1 fixes it on this box as well. Here's the relevant bit of the log: [ 0.859971] SCSI subsystem initialized [ 0.860035] libata version 3.00 loaded. [ 1.699964] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 2.063131] ahci 0000:00:1f.2: version 3.0 [ 2.063159] ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 2.063222] ahci 0000:00:1f.2: irq 44 for MSI/MSI-X [ 2.074006] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 6 Gbps 0xd impl SATA mode [ 2.074011] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio slum part ems apst [ 2.074017] ahci 0000:00:1f.2: setting latency timer to 64 [ 2.078640] scsi0 : ahci [ 2.078746] scsi1 : ahci [ 2.078824] scsi2 : ahci [ 2.078901] scsi3 : ahci [ 2.079001] scsi4 : ahci [ 2.079078] scsi5 : ahci [ 2.079265] ata1: SATA max UDMA/133 abar m2048@0xfe625000 port 0xfe625100 irq 44 [ 2.079267] ata2: DUMMY [ 2.079271] ata3: SATA max UDMA/133 abar m2048@0xfe625000 port 0xfe625200 irq 44 [ 2.079275] ata4: SATA max UDMA/133 abar m2048@0xfe625000 port 0xfe625280 irq 44 [ 2.079277] ata5: DUMMY [ 2.079278] ata6: DUMMY [ 2.383860] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 2.383890] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 2.385551] ata4.00: ATAPI: ATAPI iHAS124 Y, BL0V, max UDMA/100 [ 2.387157] ata3.00: ATA-8: WDC WD20EARS-00MVWB0, 51.0AB51, max UDMA/133 [ 2.387162] ata3.00: 3907029168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA [ 2.387463] ata4.00: configured for UDMA/100 [ 2.390392] ata3.00: configured for UDMA/133 [ 7.431907] ata1: link is slow to respond, please be patient (ready=0) [ 12.121178] ata1: COMRESET failed (errno=-16) [ 12.428010] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ 12.540828] ata1.00: ATA-9: OCZ-VERTEX3, 2.02, max UDMA/133 [ 12.540833] ata1.00: 468862128 sectors, multi 16: LBA48 NCQ (depth 31/32), AA [ 12.700454] ata1.00: configured for UDMA/133 [ 12.700608] scsi 0:0:0:0: Direct-Access ATA OCZ-VERTEX3 2.02 PQ: 0 ANSI: 5 [ 12.700793] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 12.701075] scsi 2:0:0:0: Direct-Access ATA WDC WD20EARS-00M 51.0 PQ: 0 ANSI: 5 [ 12.701260] sd 2:0:0:0: Attached scsi generic sg1 type 0 [ 12.702606] scsi 3:0:0:0: CD-ROM ATAPI iHAS124 Y BL0V PQ: 0 ANSI: 5 [ 12.704747] sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray [ 12.704905] sr 3:0:0:0: Attached scsi CD-ROM sr0 [ 12.704994] sr 3:0:0:0: Attached scsi generic sg2 type 5 [ 12.732913] sd 0:0:0:0: [sda] Attached SCSI disk [ 13.162743] sd 2:0:0:0: [sdb] Attached SCSI disk [ 13.166078] Write protecting the kernel read-only data: 10240k [ 14.382014] ata_generic 0000:00:16.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18 [ 14.382053] ata_generic 0000:00:16.2: setting latency timer to 64 [ 14.382667] scsi6 : ata_generic [ 14.382803] scsi7 : ata_generic [ 14.382910] ata7: PATA max UDMA/100 cmd 0xf130 ctl 0xf120 bmdma 0xf0f0 irq 18 [ 14.382915] ata8: PATA max UDMA/100 cmd 0xf110 ctl 0xf100 bmdma 0xf0f8 irq 18 [ 21.025971] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null) [ 21.065133] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null) [ 23.589131] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null) [ 23.803949] scsi8 : usb-storage 3-1.1.1:1.0 [ 24.808346] scsi 8:0:0:0: Direct-Access Generic Ultra HS-SD/MMC 1.91 PQ: 0 ANSI: 0 [ 24.809189] sd 8:0:0:0: Attached scsi generic sg3 type 0 [ 24.817288] sd 8:0:0:0: [sdc] Attached SCSI removable disk --Andy -- 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
