SATA speed. Should be 150 or 133?

[Krzysztof Oledzki]

Hello,

Is it normal that each time kernel reports UDMA/133 instead of UDMA/150 
for sata? I noticed this on both ICH5 and ICH6 (AHCI).

* 2.6.12 with ICH5:
libata version 1.11 loaded.
ata_piix version 1.03
ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 193
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ata1: SATA max UDMA/133 cmd 0xCCB8 ctl 0xCCB2 bmdma 0xCC80 irq 193
ata2: SATA max UDMA/133 cmd 0xCCA0 ctl 0xCC9A bmdma 0xCC88 irq 193
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3801 87:4003 88:207f
ata1: dev 0 ATA, max UDMA/133, 156250000 sectors:
ata1: dev 0 configured for UDMA/133
scsi0 : ata_piix
ata2: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3801 87:4003 88:207f
ata2: dev 0 ATA, max UDMA/133, 156250000 sectors:
ata2: dev 0 configured for UDMA/133
scsi1 : ata_piix
  Vendor: ATA       Model: Maxtor 6Y080M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05
  Vendor: ATA       Model: Maxtor 6Y080M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05

* 2.6.12 with ICH6:
libata version 1.11 loaded.
ahci version 1.00
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 217
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ahci(0000:00:1f.2) AHCI 0001.0000 32 slots 4 ports 1.5 Gbps 0xf impl SATA mode
ahci(0000:00:1f.2) flags: 64bit ncq pm led slum part
ata1: SATA max UDMA/133 cmd 0xE0802100 ctl 0x0 bmdma 0x0 irq 217
ata2: SATA max UDMA/133 cmd 0xE0802180 ctl 0x0 bmdma 0x0 irq 217
ata3: SATA max UDMA/133 cmd 0xE0802200 ctl 0x0 bmdma 0x0 irq 217
ata4: SATA max UDMA/133 cmd 0xE0802280 ctl 0x0 bmdma 0x0 irq 217
ata1: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:007f
ata1: dev 0 ATA, max UDMA/133, 156301488 sectors: lba48
ata1: dev 0 configured for UDMA/133
scsi0 : ahci
ata2: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3469 86:3c01 87:4003 88:007f
ata2: dev 0 ATA, max UDMA/133, 156301488 sectors: lba48
ata2: dev 0 configured for UDMA/133
scsi1 : ahci
ata3: no device found (phy stat 00000000)
scsi2 : ahci
ata4: no device found (phy stat 00000000)
scsi3 : ahci
  Vendor: ATA       Model: ST380817AS        Rev: 3.42
  Type:   Direct-Access                      ANSI SCSI revision: 05
  Vendor: ATA       Model: ST380817AS        Rev: 3.42
  Type:   Direct-Access                      ANSI SCSI revision: 05


Best regards,


			Krzysztof Olędzki


PS: Thank you for updating the libata-dev/passthru repository and creating 
the 2.6.12-git4-passthru1 patch. :)