Aaron Holtzman wrote:
> It would seem that Jeff Garzik (email@example.com) said:
> > In 2.3.x/2.4.x, there is io_remap_page_range which exists for exporting
> > PCI MMIO areas to userspace. As James Simmons mentioned,
> > drivers/video/fbmem.c is an example of such usage.
> Are you supposed to use io_remap_page_range for all mmap'ed
> pci devices? I use remap_page_range for mmapping (look a new verb)
> a chunk of framebuffer for my Matrox g400 yuv driver, and it
> works well.
Yes, you should be using io_remap_page_range for MMIO regions such as a
remap_page_range == io_remap_page_range on x86, but not on all other
platforms. That's why the current setup works for you, and for similar
drivers which do the same thing.
-- Jeff Garzik | Building 1024 | Free beer tomorrow. MandrakeSoft, Inc. |
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This archive was generated by hypermail 2b29 : Fri Jun 23 2000 - 21:00:10 EST