> I'm now
> trying to get the card to do DMA to other PCI cards, and have found a
> bug in our chip. Basically, the high bit of the address on PCI
> transfers gets dropped. This means that the chip can't address PCI
> memory physical addresses over 0x7FFF. Big problem, since the
> BIOS on o
Mike Smith <[EMAIL PROTECTED]> writes:
> If you're working on a single, fixed platform, this should be pretty
> simple; they just lop the top bit off the base address they use for PCI
> address allocation.
>
> Here's an evil trick you can pull though, if you're *really* desperate
> and if you'
> I've written a device driver for a proprietary PCI card, and have run
> into what seems to be a show-stopping bug. The device I'm writing the
> driver for is responsible for running DMA transfers to other PCI
> devices, and all of our initial work was going well. I locked down a
> contiguous r
I've written a device driver for a proprietary PCI card, and have run
into what seems to be a show-stopping bug. The device I'm writing the
driver for is responsible for running DMA transfers to other PCI
devices, and all of our initial work was going well. I locked down a
contiguous range of ho
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