Hello. John Sigler wrote:
When my system boots, I get several set_drive_speed_status errors. (Please see attached dmesg output.)
Can someone explain what they mean? How do I get rid of them?
IDE code attempts to autotune PIO mode and fails at that because your device is too old (or its manufacturer was too lazy) to support ATA-2 (or EIDE from marketing PoV) is its full glory.
Is there something I need to set in the config? or something I should not have set?
No, it just means that the IDE code is *too young* to support such pre-EIDE devices. :-D
Bonus question: is there some way to turn on DMA for hda?
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller at PCI slot 0000:00:07.1 VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci0000:00:07.1 ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:pio, hdb:pio ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:pio, hdd:pio Probing IDE interface ide0... hda: PQI IDE DiskOnModule, ATA DISK drive hda: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error } hda: set_drive_speed_status: error=0x04 { DriveStatusError } hda: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error } hda: set_drive_speed_status: error=0x04 { DriveStatusError }
That means that you've managed to find pre-EIDE/ATA hardware which doesn't support setting arbitrary PIO modes. What's funny is that resently being discussed here, so expect a patch RSN. :-)
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hda: max request size: 128KiB hda: 128000 sectors (65 MB) w/1KiB Cache, CHS=500/8/32 hda: hda1 hda2
# hdparm -v /dev/hda /dev/hda: multcount = 0 (off) IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 500/8/32, sectors = 128000, start = 0
Oh, interesting geometery, and the size too. :-)
# hdparm -I /dev/hda /dev/hda: ATA device, with non-removable media Model Number: PQI IDE DiskOnModule
That explains it. :-)
Serial Number: DOM6B00011677 Firmware Revision: ra03.00e Standards: Likely used: 1 Configuration: hard sectored not MFM encoded head switch time > 15us fixed drive disk xfer rate > 5Mbs Logical max current cylinders 500 500 heads 8 8 sectors/track 32 32 -- bytes/track: 0 bytes/sector: 528 CHS current addressable sectors: 128000 LBA user addressable sectors: 128000 device size with M = 1024*1024: 62 MBytes device size with M = 1000*1000: 65 MBytes Capabilities: LBA, IORDY not likely Buffer type: 0002: dual port, multi-sector Buffer size: 1.0kB bytes avail on r/w long: 4 Cannot perform double-word IO
That's generally not the device task (although there probably were IDE devices with 32-bit data bus?.. :-O
R/W multiple sector transfer: Max = 1 Current = 0 DMA: not supported PIO: pio0 pio1 pio2
[the rest of logs didn't show anything particurarly interesting] MBR, Sergei - 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