diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c index e4f5b926b67e..6327cfc36805 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c @@ -272,6 +272,7 @@ void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt, viter->dma_address = &__vmw_piter_dma_addr; viter->page = &__vmw_piter_non_sg_page; viter->addrs = vsgt->addrs; + viter->pages = vsgt->pages; break; case vmw_dma_map_populate: case vmw_dma_map_bind: @@ -452,6 +453,63 @@ static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt) vmw_tt->mapped = false; } + +/** + * vmw_bo_map_dma - Make sure buffer object pages are visible to the device + * + * @bo: Pointer to a struct ttm_buffer_object + * + * Wrapper around vmw_ttm_map_dma, that takes a TTM buffer object pointer + * instead of a pointer to a struct vmw_ttm_backend as argument. + * Note that the buffer object must be either pinned or reserved before + * calling this function. + */ +int vmw_bo_map_dma(struct ttm_buffer_object *bo) +{ + struct vmw_ttm_tt *vmw_tt = + container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); + + return vmw_ttm_map_dma(vmw_tt); +} + + +/** + * vmw_bo_unmap_dma - Make sure buffer object pages are visible to the device + * + * @bo: Pointer to a struct ttm_buffer_object + * + * Wrapper around vmw_ttm_unmap_dma, that takes a TTM buffer object pointer + * instead of a pointer to a struct vmw_ttm_backend as argument. + */ +void vmw_bo_unmap_dma(struct ttm_buffer_object *bo) +{ + struct vmw_ttm_tt *vmw_tt = + container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); + + vmw_ttm_unmap_dma(vmw_tt); +} + + +/** + * vmw_bo_sg_table - Return a struct vmw_sg_table object for a + * TTM buffer object + * + * @bo: Pointer to a struct ttm_buffer_object + * + * Returns a pointer to a struct vmw_sg_table object. The object should + * not be freed after use. + * Note that for the device addresses to be valid, the buffer object must + * either be reserved or pinned. + */ +const struct vmw_sg_table *vmw_bo_sg_table(struct ttm_buffer_object *bo) +{ + struct vmw_ttm_tt *vmw_tt = + container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); + + return &vmw_tt->vsgt; +} + + static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) { struct vmw_ttm_tt *vmw_be = @@ -478,7 +536,7 @@ static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) } return vmw_mob_bind(vmw_be->dev_priv, vmw_be->mob, - ttm->pages, ttm->num_pages, + &vmw_be->vsgt, ttm->num_pages, vmw_be->gmr_id); default: BUG(); @@ -526,6 +584,7 @@ static void vmw_ttm_destroy(struct ttm_tt *ttm) kfree(vmw_be); } + static int vmw_ttm_populate(struct ttm_tt *ttm) { struct vmw_ttm_tt *vmw_tt = |