* PCI and DMA
@ 2002-08-28 20:58 jim
0 siblings, 0 replies; only message in thread
From: jim @ 2002-08-28 20:58 UTC (permalink / raw)
To: linuxppc-embedded
Hi folks,
I've got a problem doing DMA over the PCI bus. After I've done a DMA write
to the device, the kernel hangs when I do a pci_read_config_byte for that
device. I've determined that when pci_read_config_byte is called, execution
makes it to the call to the read_byte function of the pci_ops structure.
(This function is pointed to by pdev->bus->ops->read_byte.) What I can't
seem to find is the code that is actually doing the read from the device
configuration space. Can somebody point me to it? This is on a 405GP Walnut
board.
Thanks,
Jim
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2002-08-28 20:58 PCI and DMA jim
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