> On Jun 13, 2024, at 8:44 AM, Manuel Bouyer <bou...@antioche.eu.org> wrote: > > 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 >
And PNP is currently disabled, as much as is possible. Is there anything else that I can try to do to make the registers mappable? Thanks! - Alex
