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| author | David Miller <davem@davemloft.net> | 2009-02-12 11:15:34 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-03-13 05:24:00 +0100 |
| commit | 296c6ae0e9b5ced1060b43a68b5f7e41a18509f6 (patch) | |
| tree | 35d729262bc42162d031da22bb830c8d6c1ef43c /drivers/gpu/drm/radeon/radeon_state.c | |
| parent | drm: ati_pcigart: Do not access I/O MEM space using pointer derefs. (diff) | |
| download | linux-296c6ae0e9b5ced1060b43a68b5f7e41a18509f6.tar.xz linux-296c6ae0e9b5ced1060b43a68b5f7e41a18509f6.zip | |
drm: ati_pcigart: Need to use PCI_DMA_BIDIRECTIONAL.
The buffers mapped by the PCI GART can be written to by the device,
not just read.
For example, this happens via the RB_RPTR writeback on Radeon.
So we can't use PCI_DMA_TODEVICE else we'll get protection faults
on IOMMU platforms.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_state.c')
0 files changed, 0 insertions, 0 deletions