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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-02 00:55:47 -0500
committerDave Airlie <airlied@redhat.com>2009-03-13 00:23:57 -0400
commit41c2e75e60200a860a74b7c84a6375c105e7437f (patch)
tree18e97662d6859eead4de816e121d001b34a7352a /drivers/gpu/drm/drm_stub.c
parentf77d390c9779c496aa5b99ec832996fb76bb1d13 (diff)
drm: Make drm_local_map use a resource_size_t offset
This changes drm_local_map to use a resource_size for its "offset" member instead of an unsigned long, thus allowing 32-bit machines with a >32-bit physical address space to be able to store there their register or framebuffer addresses when those are above 4G, such as when using a PCI video card on a recent AMCC 440 SoC. This patch isn't as "trivial" as it sounds: A few functions needed to have some unsigned long/int changed to resource_size_t and a few printk's had to be adjusted. But also, because userspace isn't capable of passing such offsets, I had to modify drm_find_matching_map() to ignore the offset passed in for maps of type _DRM_FRAMEBUFFER or _DRM_REGISTERS. If we ever support multiple _DRM_FRAMEBUFFER or _DRM_REGISTERS maps for a given device, we might have to change that trick, but I don't think that happens on any current driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/drm_stub.c')
0 files changed, 0 insertions, 0 deletions