diff options
| author | Francisco Jerez <currojerez@riseup.net> | 2013-02-26 02:33:11 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-03-04 11:46:12 +1000 |
| commit | 650e1203c11354ba84d69ba445abc0efcfe3890a (patch) | |
| tree | 8890d9aaa5db76f53eba84746105242efb891415 /drivers/gpu | |
| parent | 65b5f42e2a9eb9c8383fb67698bf8c27657f8c14 (diff) | |
drm/nouveau: Disable AGP on PowerPC again.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_agp.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_agp.c b/drivers/gpu/drm/nouveau/nouveau_agp.c index d28430cd2ba..6e7a55f93a8 100644 --- a/drivers/gpu/drm/nouveau/nouveau_agp.c +++ b/drivers/gpu/drm/nouveau/nouveau_agp.c @@ -47,6 +47,18 @@ nouveau_agp_enabled(struct nouveau_drm *drm) if (drm->agp.stat == UNKNOWN) { if (!nouveau_agpmode) return false; +#ifdef __powerpc__ + /* Disable AGP by default on all PowerPC machines for + * now -- At least some UniNorth-2 AGP bridges are + * known to be broken: DMA from the host to the card + * works just fine, but writeback from the card to the + * host goes straight to memory untranslated bypassing + * the GATT somehow, making them quite painful to deal + * with... + */ + if (nouveau_agpmode == -1) + return false; +#endif return true; } |