diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2010-07-05 15:46:08 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-07-05 15:46:08 +0900 |
| commit | 285eba57db7bd7d7c3c5929fb8621fdcaaea1b00 (patch) | |
| tree | a9e7f0563cef296b24c53b20dbb388ec5c210172 /drivers/gpu/drm/nouveau/nv50_fb.c | |
| parent | 1c14e6cecb1811543b1016f27e5d308fbea8c08a (diff) | |
| parent | 815c4163b6c8ebf8152f42b0a5fd015cfdcedc78 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
include/linux/serial_sci.h
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_fb.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_fb.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_fb.c b/drivers/gpu/drm/nouveau/nv50_fb.c index a95e6941ba88..32611bd30e6d 100644 --- a/drivers/gpu/drm/nouveau/nv50_fb.c +++ b/drivers/gpu/drm/nouveau/nv50_fb.c @@ -6,10 +6,16 @@ int nv50_fb_init(struct drm_device *dev) { - /* This is needed to get meaningful information from 100c90 - * on traps. No idea what these values mean exactly. */ struct drm_nouveau_private *dev_priv = dev->dev_private; + /* Not a clue what this is exactly. Without pointing it at a + * scratch page, VRAM->GART blits with M2MF (as in DDX DFS) + * cause IOMMU "read from address 0" errors (rh#561267) + */ + nv_wr32(dev, 0x100c08, dev_priv->gart_info.sg_dummy_bus >> 8); + + /* This is needed to get meaningful information from 100c90 + * on traps. No idea what these values mean exactly. */ switch (dev_priv->chipset) { case 0x50: nv_wr32(dev, 0x100c90, 0x0707ff); |