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| author | Benjamin Herrenschmidt | 2009-02-02 06:55:47 +0100 |
|---|---|---|
| committer | Dave Airlie | 2009-03-13 05:23:57 +0100 |
| commit | 41c2e75e60200a860a74b7c84a6375c105e7437f (patch) | |
| tree | 18e97662d6859eead4de816e121d001b34a7352a /drivers/gpu/drm/mga/mga_drv.h | |
| parent | drm: Split drm_map and drm_local_map (diff) | |
| download | kernel-qcow2-linux-41c2e75e60200a860a74b7c84a6375c105e7437f.tar.gz kernel-qcow2-linux-41c2e75e60200a860a74b7c84a6375c105e7437f.tar.xz kernel-qcow2-linux-41c2e75e60200a860a74b7c84a6375c105e7437f.zip | |
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/mga/mga_drv.h')
| -rw-r--r-- | drivers/gpu/drm/mga/mga_drv.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h index 6bf4de990325..3d264f288237 100644 --- a/drivers/gpu/drm/mga/mga_drv.h +++ b/drivers/gpu/drm/mga/mga_drv.h @@ -317,8 +317,8 @@ do { \ DRM_INFO( "\n" ); \ DRM_INFO( " tail=0x%06x head=0x%06lx\n", \ dev_priv->prim.tail, \ - MGA_READ( MGA_PRIMADDRESS ) - \ - dev_priv->primary->offset ); \ + (unsigned long)(MGA_READ(MGA_PRIMADDRESS) - \ + dev_priv->primary->offset)); \ } \ if ( !test_bit( 0, &dev_priv->prim.wrapped ) ) { \ if ( dev_priv->prim.space < \ |