[PROBLEM[2.5.59][-mm4] - DMA Disabled & UDMA wrong mode

[PROBLEM[2.5.59][-mm4] - DMA Disabled & UDMA wrong mode

[Shawn Starr]

With 2.5.59-mm4 I've seen DMA being disabled. I don't know if this is occuring 
in vanilla 2.5.59.
Also, the UDMA33 is wrong, this A7M266-D supports UDMA100 and the drive itself 
is a UDMA(133) but since ive not heard of any UDMA133 controllers it's using 
100.

dmesg snippit:

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD7441: IDE controller at PCI slot 00:07.1
AMD7441: chipset revision 4
AMD7441: not 100%% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD_IDE: Advanced Micro Devic AMD-768 [Opus] IDE (rev04) UDMA100 controller on 
pci00:07.1
     ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
     ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:DMA
hda: MAXTOR 6L060J3, ATA DISK drive
hda: DMA disabled
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdc: YAMAHA CRW2100E, ATAPI CD/DVD-ROM drive
hdd: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive
hdc: DMA disabled
hdd: DMA disabled
ide1 at 0x170-0x177,0x376 on irq 15
hda: host protected area => 1
hda: 117266688 sectors (60041 MB) w/1819KiB Cache, CHS=116336/16/63, UDMA(33) 

Re: [PROBLEM[2.5.59][-mm4] - DMA Disabled & UDMA wrong mode

[Zwane Mwaikambo]

On Sat, 25 Jan 2003, Shawn Starr wrote:

> With 2.5.59-mm4 I've seen DMA being disabled. I don't know if this is occuring 
> in vanilla 2.5.59.
> Also, the UDMA33 is wrong, this A7M266-D supports UDMA100 and the drive itself 
> is a UDMA(133) but since ive not heard of any UDMA133 controllers it's using 
> 100.

You can't have DMA disabled and still be doing UDMA33

> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> AMD7441: IDE controller at PCI slot 00:07.1
> AMD7441: chipset revision 4
> AMD7441: not 100%% native mode: will probe irqs later
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> AMD_IDE: Advanced Micro Devic AMD-768 [Opus] IDE (rev04) UDMA100 controller on 
> pci00:07.1
>      ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
>      ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:DMA
> hda: MAXTOR 6L060J3, ATA DISK drive
> hda: DMA disabled

That driver is just a bit noisy i believe, kind of like the VIA one. 
Have you tried latest 2.4-ac's IDE code? It looks like a fair chunk of 
amd74xx came into 2.5 from somewhere, possibly -ac

	Zwane
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