On Thu, Jun 13, 2024 at 08:39:37AM -0400, Alexander Jacocks wrote:
>
> > On Jun 13, 2024, at 5:51?AM, Manuel Bouyer <bou...@antioche.eu.org> wrote:
> >
> > ?On Wed, Jun 12, 2024 at 10:29:59AM -0400, Alexander Jacocks wrote:
> >> And it was pointed out to me that my paste of the DMA error was
> >> incorrect.
> >> Here is the correct log:
> >> [ 1.000004] pci0 at mainbus0 bus 0: configuration mode 1
> >> [ 1.000004] pci0: i/o space, memory space enabled, rd/line, rd/mult,
> >> wr/inv ok
> >> [ 1.000004] pchb0 at pci0 dev 0 function 0: Silicon Integrated System
> >> 5597/5598 Host Bridge (rev. 0x10)
> >> [ 1.000004] pcib0 at pci0 dev 1 function 0: Silicon Integrated System
> >> 85C503 or 5597/5598 ISA Bridge (rev. 0x01)
> >> [ 1.000004] siside0 at pci0 dev 1 function 1
> >> [ 1.000004] siside0: Silicon Integrated Systems 5597/5598 IDE
> >> controller (rev. 0xd0)
> >> [ 1.000004] siside0: bus-master DMA support present, but unused
> >> (couldn't map registers)
> >
> > The problem here is that the DMA registers are not mappable, so can't be
> > used by the driver. Some BIOS settings (like PnP support) may affect this.
> >
> >> [ 1.000004] siside0: secondary channel ignored (disabled)
> >> I tried simply forcing DMA on by adding the 0x0001 flag to the pciide
> >> driver, with a minor mod to the GENERIC kernel, but it didn't change the
> >> behavior any. I also attempted to add in a Maxtor SATA-150 PCI IDE
> >
> > Yes, that won't work in this case.
>
> Interesting. I was able to verify that Windows 98SE is able to enable DMA
> support, even with the current BIOS settings. This BIOS is pretty limited in
> what can be configured, unfortunately.
>From memory, win98 was the "PnP OS". it had to be disabled for others.
>
> Would disabling ACPI and enabling APM possibly help? Since this board clearly
> has a broken ACPI configuration, that seems like a possibility.
No APM is something different
--
Manuel Bouyer <bou...@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
