On Mon, Dec 31 2001, Matthew Dharm wrote: > Jens -- > > Thanks for the info. It may have been discussed 'here' (tho, this is > crosposted to two different lists), but I've been focused on 2.4 bugs (one > more left!) and hadn't seen this item.
oh sorry, 'here' means linux-kernel to me :-) > I think for the first 2.5 kernels, we'll o with your 'vaddr' line, but I > think that being able to set highmem_io is a worthwhile thing. Which leads > me to two questions: indeed > (1) Do the USB HCDs support highmem? I seem to recall they do, but I'm not > certain. most likely, I don't know though. I would imagine they support full 32-bit dma. > (2) How do I pass a highmem address to the HCDs? The URB structures we use > don't seem particularly well-suited for this. you need to use the pci dma mapping interface, see Documentation/DMA-mapping.txt -- Jens Axboe _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
