I can't get DMA to work on an AOpen motherboard using the Intel 845G
chipset. I see in the archives that other people have had problems like
this, and that it's due to a BIOS problem. I've tried some of the
patches that were sent in response, but it seems that those patches are
already incorporated into the kernel I'm using (2.4.20-pre1-ac3) and I
still have the problem.
My kernel command line includes "ide0=dma".
These lines show up on boot:
PCI: Using IRQ router PIIX [8086/24c0] at 00:1f.0
PCI: Found IRQ 11 for device 00:1f.1
...[several unrelated lines]...
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
ICH4: IDE controller on PCI bus 00 dev f9
PCI: Device 00:1f.1 not available because of resource collisions
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
ICH4: IDE controller on PCI bus 00 dev f9
PCI: Device 00:1f.1 not available because of resource collisions
ICH4: (ide_setup_pci_device:) Could not enable device.
And here's what seems to be the relevant part of 'lspci -v':
00:1f.1 IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 01) (prog-if 8a [Master SecP PriP])
Subsystem: AOPEN Inc.: Unknown device 0074
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at <unassigned> [size=8]
I/O ports at <unassigned> [size=4]
I/O ports at <unassigned> [size=8]
I/O ports at <unassigned> [size=4]
I/O ports at f000 [size=16]
Memory at 1f800000 (32-bit, non-prefetchable) [size=1K]
-- Rob Speer- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Aug 15 2002 - 22:00:36 EST