Ronald G Minnich wrote:
On Tue, 25 Apr 2000, Colin Jensen wrote:
Did you enable Memory, IO, and Bus Master on the IDE? You need Mem and IO enabled even if there are no memory regions associated with the device -- I'm assuming that if I possessed the PCI IDE spec, it would tell me that a PCI IDE device receives ISA bus cycles or some crazy thing like that.
are you sure about that? this is from ide-pci.c in 2.3.99pre5:
if (!(pcicmd & PCI_COMMAND_IO)) { /* is device disabled? */ /* * PnP BIOS was *supposed* to have set this device up fornote that it is only checking COMMAND_IO. Does it need more?
If the device doesn't export legacy memory region OR base address memory regions OR expansion rom regions, then PCI_COMMAND_MEM can be disabled... My ASUS P2B BIOS initializes the SB Live card, with no MMIO regions, like this:
00:0c.1 Input device controller: Creative Labs SB Live! (rev 06) Subsystem: Creative Labs Gameport Joystick Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 32 set Region 0: I/O ports at a800 Capabilities: <available only to root>