diff options
| author | Dave Airlie <airlied@redhat.com> | 2012-05-31 13:52:53 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-05-31 14:14:01 +0100 |
| commit | 63bc620b45af8c743ac291c8725933278c712692 (patch) | |
| tree | e59be3182e842cb989d35074c2fc62f6ff8f9442 /drivers/gpu | |
| parent | 35916acedd8dadb361ef6439d05d60fbe8f53032 (diff) | |
| download | talos-obmc-linux-63bc620b45af8c743ac291c8725933278c712692.tar.gz talos-obmc-linux-63bc620b45af8c743ac291c8725933278c712692.zip | |
radeon: add radeon prime vmap support.
This is the same as the nouveau code pretty much.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_prime.c | 38 |
2 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 492654f8ee74..2e24022b389a 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -346,6 +346,9 @@ struct radeon_bo { /* Constant after initialization */ struct radeon_device *rdev; struct drm_gem_object gem_base; + + struct ttm_bo_kmap_obj dma_buf_vmap; + int vmapping_count; }; #define gem_to_radeon_bo(gobj) container_of((gobj), struct radeon_bo, gem_base) diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c index 37ff6bfb8c72..8ddab4c76710 100644 --- a/drivers/gpu/drm/radeon/radeon_prime.c +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -90,6 +90,42 @@ static int radeon_gem_prime_mmap(struct dma_buf *dma_buf, struct vm_area_struct return -EINVAL; } +static void *radeon_gem_prime_vmap(struct dma_buf *dma_buf) +{ + struct radeon_bo *bo = dma_buf->priv; + struct drm_device *dev = bo->rdev->ddev; + int ret; + + mutex_lock(&dev->struct_mutex); + if (bo->vmapping_count) { + bo->vmapping_count++; + goto out_unlock; + } + + ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, + &bo->dma_buf_vmap); + if (ret) { + mutex_unlock(&dev->struct_mutex); + return ERR_PTR(ret); + } + bo->vmapping_count = 1; +out_unlock: + mutex_unlock(&dev->struct_mutex); + return bo->dma_buf_vmap.virtual; +} + +static void radeon_gem_prime_vunmap(struct dma_buf *dma_buf, void *vaddr) +{ + struct radeon_bo *bo = dma_buf->priv; + struct drm_device *dev = bo->rdev->ddev; + + mutex_lock(&dev->struct_mutex); + bo->vmapping_count--; + if (bo->vmapping_count == 0) { + ttm_bo_kunmap(&bo->dma_buf_vmap); + } + mutex_unlock(&dev->struct_mutex); +} const static struct dma_buf_ops radeon_dmabuf_ops = { .map_dma_buf = radeon_gem_map_dma_buf, .unmap_dma_buf = radeon_gem_unmap_dma_buf, @@ -99,6 +135,8 @@ const static struct dma_buf_ops radeon_dmabuf_ops = { .kunmap = radeon_gem_kunmap, .kunmap_atomic = radeon_gem_kunmap_atomic, .mmap = radeon_gem_prime_mmap, + .vmap = radeon_gem_prime_vmap, + .vunmap = radeon_gem_prime_vunmap, }; static int radeon_prime_create(struct drm_device *dev, |
