Re: 10.0 DMA Issues With SIS-5597/5598 Chipset

[Alexander Jacocks <jjacocks%gmail.com@localhost>]

On Thu, Jun 13, 2024 at 10:04 AM Manuel Bouyer <bouyer%antioche.eu.org@localhost>
wrote:

> On Thu, Jun 13, 2024 at 09:58:34AM -0400, Alexander Jacocks wrote:
> >
> > > On Jun 13, 2024, at 8:44?AM, Manuel Bouyer <bouyer%antioche.eu.org@localhost>
> wrote:
> > >
> > > ?On Thu, Jun 13, 2024 at 08:39:37AM -0400, Alexander Jacocks wrote:
> > >>
> > >>>> On Jun 13, 2024, at 5:51?AM, Manuel Bouyer <bouyer%antioche.eu.org@localhost>
> 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