Re: 2.3.99-pre3 UDMA33 Errors

From: Kurt Roeckx (Q@ping.be)
Date: Fri Mar 31 2000 - 10:50:49 EST


On Fri, Mar 31, 2000 at 08:09:49AM +0200, Luca Montecchiani wrote:
>
> Btw this is only a my problem because m5229_revision <= 20
> can't do UDMA ( WDC or not ).
>
> What about your lspci?
> Is the WDC workaround too permissive ?
>
> if (m5229_revision < 0xC2) && ((chip_is_1543c_e && strstr(id->model, "WDC "))
> then NOUDMA

lcpci:
00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1541 (rev 04)
00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5243 (rev 04)
00:02.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03)
00:03.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge
[Aladdin IV] (rev c3)
00:09.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH
A1 ISDN [Fritz] (rev 02)
00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c1)
01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo Banshee
(rev 03)

from dmesg:
ide: Assuming 40MHz system bus speed for PIO modes; override with
idebus=xx
ALI15X3: IDE controller on PCI bus 00 dev 78
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:pio, hdd:pio
hda: IBM-DHEA-38451, ATA DISK drive
hdb: WDC AC418000D, ATA DISK drive
ide: Assuming 40MHz system bus speed for PIO modes; override with
idebus=xx
hdc: PCCD048, ATAPI CDROM drive
hdd: HP CD-Writer+ 7100, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: IBM-DHEA-38451, 8063MB w/472kB Cache, CHS=1027/255/63, UDMA(33)
hdb: WDC AC418000D, 17206MB w/1966kB Cache, CHS=2193/255/63, UDMA(33)

In 2.3.51 it still said:
hdb: WDC AC418000D, 17206MB w/1966kB Cache, CHS=2193/255/63, (U)DMA

It was doing mword2 in 2.3.51.

I'm not sure that I like that change. I did NOT enable CONFIG_WDC_ALI15X3.
I didn't see any problems with using udma 33 now tho.

Is this a problem with 1543 only, for for 15X3?

I've mailed to Andre Hedrick about this a week ago (and yesterday), but he
didn't reply yet.

Kurt

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