| /* |
| * Copyright 2016 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| #define MESA_LLVMPIPE_TILE_ORDER 6 |
| #define MESA_LLVMPIPE_TILE_SIZE (1 << MESA_LLVMPIPE_TILE_ORDER) |
| |
| static struct supported_combination combos[4] = { |
| {DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN}, |
| {DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN | |
| BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| {DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE, |
| BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY}, |
| }; |
| |
| static int vgem_init(struct driver *drv) |
| { |
| drv_insert_combinations(drv, combos, ARRAY_SIZE(combos)); |
| return 0; |
| } |
| |
| static int vgem_bo_create(struct bo *bo, uint32_t width, uint32_t height, |
| uint32_t format, uint32_t flags) |
| { |
| int ret = drv_dumb_bo_create(bo, ALIGN(width, MESA_LLVMPIPE_TILE_SIZE), |
| ALIGN(height, MESA_LLVMPIPE_TILE_SIZE), |
| format, flags); |
| bo->width = width; |
| bo->height = height; |
| |
| return ret; |
| } |
| |
| static uint32_t vgem_resolve_format(uint32_t format) |
| { |
| switch (format) { |
| case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED: |
| /*HACK: See b/28671744 */ |
| return DRM_FORMAT_XBGR8888; |
| case DRM_FORMAT_FLEX_YCbCr_420_888: |
| return DRM_FORMAT_YVU420; |
| default: |
| return format; |
| } |
| } |
| |
| struct backend backend_vgem = |
| { |
| .name = "vgem", |
| .init = vgem_init, |
| .bo_create = vgem_bo_create, |
| .bo_destroy = drv_dumb_bo_destroy, |
| .bo_map = drv_dumb_bo_map, |
| .resolve_format = vgem_resolve_format, |
| }; |
| |