| /* |
| * Copyright 2017 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. |
| */ |
| |
| #ifdef DRV_VC4 |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <vc4_drm.h> |
| #include <xf86drm.h> |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| static const uint32_t supported_formats[] = { |
| DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888 |
| }; |
| |
| static int vc4_init(struct driver *drv) |
| { |
| return drv_add_linear_combinations(drv, supported_formats, |
| ARRAY_SIZE(supported_formats)); |
| } |
| |
| static int vc4_bo_create(struct bo *bo, uint32_t width, uint32_t height, |
| uint32_t format, uint32_t flags) |
| { |
| int ret; |
| size_t plane; |
| struct drm_vc4_create_bo bo_create; |
| |
| drv_bo_from_format(bo, width, height, format); |
| |
| memset(&bo_create, 0, sizeof(bo_create)); |
| bo_create.size = bo->total_size; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_VC4_CREATE_BO, &bo_create); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_VC4_GEM_CREATE failed " |
| "(size=%zu)\n", bo->total_size); |
| return ret; |
| } |
| |
| for (plane = 0; plane < bo->num_planes; plane++) |
| bo->handles[plane].u32 = bo_create.handle; |
| |
| return 0; |
| } |
| |
| static void *vc4_bo_map(struct bo *bo, struct map_info *data, size_t plane) |
| { |
| int ret; |
| struct drm_vc4_mmap_bo bo_map; |
| |
| memset(&bo_map, 0, sizeof(bo_map)); |
| bo_map.handle = bo->handles[0].u32; |
| |
| ret = drmCommandWriteRead(bo->drv->fd, DRM_VC4_MMAP_BO, &bo_map, |
| sizeof(bo_map)); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_VC4_MMAP_BO failed\n"); |
| return MAP_FAILED; |
| } |
| |
| data->length = bo->total_size; |
| |
| return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| bo->drv->fd, bo_map.offset); |
| } |
| |
| struct backend backend_vc4 = |
| { |
| .name = "vc4", |
| .init = vc4_init, |
| .bo_create = vc4_bo_create, |
| .bo_import = drv_prime_bo_import, |
| .bo_destroy = drv_gem_bo_destroy, |
| .bo_map = vc4_bo_map, |
| }; |
| |
| #endif |