Messages in this thread | | | Date | Sun, 02 Jun 2002 22:04:49 +0200 | From | Kasper Dupont <> | Subject | IDE DMA problem in -ac kernels |
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I'm having problems with enabling DMA on my HD in the latest -ac kernels. I just spotted the problem in 2.4.19-pre9-ac3, but the problem is also there in 2.4.19-pre8-ac5. However it there are no problems in 2.4.19-pre8-ac1.
When booting -pre8-ac1 DMA is automatically enabled on hda, and it works at the expected speed. When booting the later kernels DMA is not enabled. When typing hdparm -d1 /dev/hda the HD LED stays on and all access to the HD hangs.
I used the same .config for both -pre8-ac1 and -pre8-ac5.
There are no unusual messages about IDE DMA in my log. Here are the messages printed during boot:
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 78 PCI: Assigned IRQ 11 for device 00:0f.0 ALI15X3: chipset revision 32 ALI15X3: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA hda: IC35L040AVER07-0, ATA DISK drive hdb: CREATIVEDVD-ROM DVD2240E 03/18/98, ATAPI CD/DVD-ROM drive hdc: CR-4802TE, ATAPI CD/DVD-ROM drive hdd: IBM-DTTA-351680, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: 66055248 sectors (33820 MB) w/1916KiB Cache, CHS=4111/255/63, (U)DMA hdd: 33022080 sectors (16907 MB) w/462KiB Cache, CHS=32760/16/63, (U)DMA Partition check: hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 > hdd: [PTBL] [2055/255/63] hdd1 hdd2 hdd4 < hdd5 hdd6 hdd7 hdd8 >
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