Messages in this thread | | | Date | Sat, 29 Jan 2000 21:52:11 -0800 (PST) | From | Andre Hedrick <> | Subject | Re: DMA changes in 2.3.41 - how the f* do I get this working on ARM? |
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Russell,
I missed covering your a**..........yes this is a WTF. Where did you find the break point........It will get fixed.
On Sun, 30 Jan 2000, Russell King wrote:
> Hi, > > I've been looking over the 2.3.41 patch, and have come across a major problem > area for ARM. > > On ARM, there is no such thing as "dma coherent" memory. Unfortunately, the > new PCI code (pci_alloc_consistent) appears to assume that there is a way > of doing this. > > I have had ideas about ways to do this on the ARM, but it will not be trivial > changes to the mm layer, and certainly has not been implemented yet. > > This effectively means that I seem to have two options: > > 1. either we loose any hope of IDE DMA for the rest of 2.3 and 2.4, or > 2. the IDE DMA code gets the dma_cache_* macros added back in > > I would have preferred to have heard about the extent of these changes (and > that the dma_cache_* macros were going to be removed, along with my comments > marking them with my initials) before it was submitted. > > For now, I'm adding the dma_cache_* macros back in, and if I don't hear anything, > I will be re-submitting that code back to Linus. > > (very pissed) > _____ > |_____| ------------------------------------------------- ---+---+- > | | Russell King rmk@arm.linux.org.uk --- --- > | | | | http://www.arm.linux.org.uk/~rmk/aboutme.html / / | > | +-+-+ --- -+- > / | THE developer of ARM Linux |+| /|\ > / | | | --- | > +-+-+ ------------------------------------------------- /\\\ | > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.tux.org/lkml/ >
Andre Hedrick The Linux ATA/IDE guy
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