Re: DMA issue in 2.6.12 ???

[lsorense@csclub.uwaterloo.ca (Lennart Sorensen)]

On Wed, Aug 17, 2005 at 04:48:48PM -0500, Ardo van Rangelrooij wrote:
> 2.6.11:
> 
>     ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
>     ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA

Looks like a chipset specific driver loading

> hda: DVD-ROM DDU1622, ATAPI CD/DVD-ROM drive
> hdb: WDC WD1200JB-75CRA0, ATA DISK drive
> hdc: Maxtor 6B200R0, ATA DISK drive
> hdd: WDC WD1200JB-00EVA0, ATA DISK drive
> hdb: max request size: 128KiB
> hdb: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=65535/16/63, UDMA(100)
> hdb: cache flushes not supported
> hdc: max request size: 1024KiB
> hdc: 398297088 sectors (203928 MB) w/16384KiB Cache, CHS=24792/255/63, UDMA(133)
> hdc: cache flushes supported
> hdd: max request size: 1024KiB
> hdd: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=16383/255/63, UDMA(100)
> hdd: cache flushes supported
> hda: ATAPI 40X DVD-ROM drive, 512kB Cache
> 
> 2.6.12:
> 
> hda: DVD-ROM DDU1622, ATAPI CD/DVD-ROM drive
> hdb: WDC WD1200JB-75CRA0, ATA DISK drive
> hdc: Maxtor 6B200R0, ATA DISK drive
> hdd: WDC WD1200JB-00EVA0, ATA DISK drive
> hda: ATAPI 40X DVD-ROM drive, 512kB Cache
> hdb: max request size: 128KiB
> hdb: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=65535/16/63
> hdb: cache flushes not supported
> hdc: max request size: 1024KiB
> hdc: 398297088 sectors (203928 MB) w/16384KiB Cache, CHS=24792/255/63
> hdc: cache flushes supported
> hdd: max request size: 1024KiB
> hdd: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=16383/255/63
> hdd: cache flushes supported

That one had no sign of the chipset specific driver.

perhaps 'dmesg|grep ide' would work better.

Len Sorensen