diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-11-10 14:10:04 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-12-21 17:17:09 +1000 |
| commit | 4c74eb7ff276813ee73943a3756b295675fb2865 (patch) | |
| tree | 29f0c29e5209d572906ed33031e8a42fab84899e /drivers/gpu/drm/nouveau/nouveau_vm.c | |
| parent | 3ee0128140eed7d32b785a335099a2ec38258283 (diff) | |
drm/nvc0: import initial vm backend
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_vm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_vm.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c index b023a64c27d..97d82aedf86 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vm.c +++ b/drivers/gpu/drm/nouveau/nouveau_vm.c @@ -295,7 +295,34 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset, vm->flush = nv50_vm_flush; vm->spg_shift = 12; vm->lpg_shift = 16; + pgt_bits = 29; + block = (1 << pgt_bits); + if (length < block) + block = length; + + } else + if (dev_priv->card_type == NV_C0) { + vm->map_pgt = nvc0_vm_map_pgt; + vm->map = nvc0_vm_map; + vm->map_sg = nvc0_vm_map_sg; + vm->unmap = nvc0_vm_unmap; + vm->flush = nvc0_vm_flush; + vm->spg_shift = 12; + vm->lpg_shift = 17; + pgt_bits = 27; + + /* Should be 4096 everywhere, this is a hack that's + * currently necessary to avoid an elusive bug that + * causes corruption when mixing small/large pages + */ + if (length < (1ULL << 40)) + block = 4096; + else { + block = (1 << pgt_bits); + if (length < block) + block = length; + } } else { kfree(vm); return -ENOSYS; @@ -314,10 +341,6 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset, vm->refcount = 1; vm->pgt_bits = pgt_bits - 12; - block = (1 << pgt_bits); - if (length < block) - block = length; - ret = nouveau_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12, block >> 12); if (ret) { |