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drm/nouveau/ttm: explicity sync with kernel channel before moving buffer 

The GEM code handles this currently, but that'll be removed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2013-11-22 10:39:57 +10:00
parent 3c57d85d7d
commit 35b8141b82
1 changed files with 13 additions and 28 deletions
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41
drivers/gpu/drm/nouveau/nouveau_bo.c
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@ -560,28 +560,6 @@ nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
}
/* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
* TTM_PL_{VRAM,TT} directly.
*/
static int
nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,
struct nouveau_bo *nvbo, bool evict,
bool no_wait_gpu, struct ttm_mem_reg *new_mem)
{
struct nouveau_fence *fence = NULL;
int ret;
ret = nouveau_fence_new(chan, false, &fence);
if (ret)
return ret;
ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, evict,
no_wait_gpu, new_mem);
nouveau_fence_unref(&fence);
return ret;
}
static int
nve0_bo_move_init(struct nouveau_channel *chan, u32 handle)
{
@ -967,6 +945,7 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
{
struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
struct nouveau_channel *chan = drm->ttm.chan;
struct nouveau_fence *fence;
int ret;
/* create temporary vmas for the transfer and attach them to the
@ -980,14 +959,20 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
}
mutex_lock_nested(&chan->cli->mutex, SINGLE_DEPTH_NESTING);
ret = drm->ttm.move(chan, bo, &bo->mem, new_mem);
ret = nouveau_fence_sync(bo->sync_obj, chan);
if (ret == 0) {
struct nouveau_bo *nvbo = nouveau_bo(bo);
ret = nouveau_bo_move_accel_cleanup(chan, nvbo, evict,
no_wait_gpu, new_mem);
ret = drm->ttm.move(chan, bo, &bo->mem, new_mem);
if (ret == 0) {
ret = nouveau_fence_new(chan, false, &fence);
if (ret == 0) {
ret = ttm_bo_move_accel_cleanup(bo, fence,
evict,
no_wait_gpu,
new_mem);
nouveau_fence_unref(&fence);
}
}
}
mutex_unlock(&chan->cli->mutex);
return ret;
}