On Tue, 2005-11-15 at 18:53 +0100, sej wrote:
that sounds the wrong approach.. why don't you make your device driverI can't because I need to allocate 128MB of memory per PCI card and if I put for example 4 cards, I'll have 512MB in kernel memory, and I think there will be some problem in kernel.
export an mmap function.. and let the userspace app use that ?
no there isn't.. there is no rule that memory you allocate for this as
to be lowmem... at all.
transfer->Descript[i].size = PAGE_SIZE;I have a plx bridge PCI9656 with a DMA controler. So I have to make a descriptor table with physical address and size.
transfer->Descript[i].pciaddr = (ULONG)
you really need to use the PCI DMA mapping api!
I work in 32 bits address mode, but I don't know which function to call to get a 36bits address for my controler.
see the PCI DMA mapping api. the docs for it are in Documentation/
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/