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.
--
Manuel Bouyer <bou...@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
