('binary' encoding is not supported, stored as-is)
Sorry if this is an old issue, but I'm still seeing this problem between
ALI15x3 and Maxtor drives when DMA is enabled...
If I run 2.4.19 DMA is not autodetected. I get lousy performance. I can enable DMA (with hdparm) on all but my Maxtor drive, but if I manually enable DMA on the Maxtor drive disk access freezes (to both drives on the channel).
If I run 2.4.19-ac4 DMA is turned on automatically and the system hangs at the partition check.
on 2.4.19 I see this in dmesg:
...
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ALI15X3: IDE controller on PCI bus 00 dev 20
PCI: No IRQ known for interrupt pin A of device 00:04.0. Please try using pci=biosirq.
ALI15X3: chipset revision 196
ALI15X3: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xb400-0xb407, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xb408-0xb40f, BIOS settings: hdc:DMA, hdd:DMA
hda: ST340016A, ATA DISK drive
hdb: Maxtor 4G120J6, ATA DISK drive
hdc: RICOH DVD/CDRW MP9120, ATAPI CD/DVD-ROM drive
hdd: IBM-DPTA-372050, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=77545/16/63
hdb: 240121728 sectors (122942 MB) w/2048KiB Cache, CHS=14946/255/63
hdd: 40088160 sectors (20525 MB) w/1961KiB Cache, CHS=39770/16/63, UDMA(66)
ide-floppy driver 0.99.newide
Partition check:
/dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 p6 p7 >
/dev/ide/host0/bus0/target1/lun0: p1
/dev/ide/host0/bus1/target1/lun0: [PTBL] [2495/255/63] p1
2.4.19-ac4 (correctly) probes hda and hdb as being UDMA(100), but it looks like hdb chokes on the DMA...
Steve Bennett
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Aug 15 2002 - 22:00:23 EST