http://bugzilla.kernel.org/show_bug.cgi?id=11328 bzolnier@xxxxxxxxx changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|io_ide@xxxxxxxxxxxxxxxxxxxx |bzolnier@xxxxxxxxx Status|NEW |ASSIGNED ------- Comment #4 from bzolnier@xxxxxxxxx 2008-08-14 01:37 ------- According to dmesg-2.6.24 all disks on HPT controller are using UDMA100 and there are no error messages about dropping to PIO. .... [ 43.835503] hde: Maxtor 7L300R0, ATA DISK drive [ 43.835536] hde: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 43.837037] hde: UDMA/100 mode selected [ 43.838590] ide2 at 0x7000-0x7007,0x6802 on irq 16 [ 43.838626] Probing IDE interface ide3... [ 44.127439] hdh: Maxtor 5A300J0, ATA DISK drive [ 44.463041] hdg: Maxtor 5A300J0, ATA DISK drive [ 44.463062] hdg: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 44.463201] hdg: UDMA/100 mode selected [ 44.463340] hdh: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 44.463472] hdh: UDMA/100 mode selected [ 44.463638] ide3 at 0x6400-0x6407,0x6002 on irq 16 [ 44.463692] Probing IDE interface ide0... [ 44.750830] hdb: Maxtor 5A300J0, ATA DISK drive [ 45.086698] hda: Maxtor 5A300J0, ATA DISK drive [ 45.086721] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 45.086858] hda: UDMA/100 mode selected [ 45.086997] hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 45.087126] hdb: UDMA/100 mode selected [ 45.087295] ide0 at 0x8800-0x8807,0x8402 on irq 16 [ 45.087351] Probing IDE interface ide1... [ 45.374370] hdd: Maxtor 5A300J0, ATA DISK drive [ 45.710125] hdc: Maxtor 5A300J0, ATA DISK drive [ 45.710147] hdc: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 45.710293] hdc: UDMA/100 mode selected [ 45.710432] hdd: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 45.710564] hdd: UDMA/100 mode selected [ 45.710728] ide1 at 0x8000-0x8007,0x7802 on irq 16 ... [ You can verify if DMA is really used by checking DMA enable setting with 'hdparm -d /dev/device' and device speed with 'hdparm -Ttf /dev/device'. ] HPT support in libata (SCSI emulation) is known to be experimental so I advise to use IDE subsystem. I'll re-assign the bug to the right people anyway. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. You are the assignee for the bug, or are watching the assignee. -- 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
