1 /* 2 * Copyright 2014 The Chromium OS Authors. All rights reserved. 3 * Use of this source code is governed by a BSD-style license that can be 4 * found in the LICENSE file. 5 */ 6 7 #ifdef DRV_EXYNOS 8 9 // clang-format off 10 #include <assert.h> 11 #include <errno.h> 12 #include <stdio.h> 13 #include <string.h> 14 #include <xf86drm.h> 15 #include <exynos_drm.h> 16 // clang-format on 17 18 #include "drv_priv.h" 19 #include "helpers.h" 20 #include "util.h" 21 22 static const uint32_t render_target_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888 }; 23 24 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12 }; 25 26 static int exynos_init(struct driver *drv) 27 { 28 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats), 29 &LINEAR_METADATA, BO_USE_RENDER_MASK); 30 31 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats), 32 &LINEAR_METADATA, BO_USE_TEXTURE_MASK); 33 34 return drv_modify_linear_combinations(drv); 35 } 36 37 static int exynos_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, 38 uint64_t use_flags) 39 { 40 size_t plane; 41 42 if (format == DRM_FORMAT_NV12) { 43 uint32_t chroma_height; 44 /* V4L2 s5p-mfc requires width to be 16 byte aligned and height 32. */ 45 width = ALIGN(width, 16); 46 height = ALIGN(height, 32); 47 chroma_height = ALIGN(height / 2, 32); 48 bo->strides[0] = bo->strides[1] = width; 49 /* MFC v8+ requires 64 byte padding in the end of luma and chroma buffers. */ 50 bo->sizes[0] = bo->strides[0] * height + 64; 51 bo->sizes[1] = bo->strides[1] * chroma_height + 64; 52 bo->offsets[0] = bo->offsets[1] = 0; 53 bo->total_size = bo->sizes[0] + bo->sizes[1]; 54 } else if (format == DRM_FORMAT_XRGB8888 || format == DRM_FORMAT_ARGB8888) { 55 bo->strides[0] = drv_stride_from_format(format, width, 0); 56 bo->total_size = bo->sizes[0] = height * bo->strides[0]; 57 bo->offsets[0] = 0; 58 } else { 59 drv_log("unsupported format %X\n", format); 60 assert(0); 61 return -EINVAL; 62 } 63 64 int ret; 65 for (plane = 0; plane < bo->num_planes; plane++) { 66 size_t size = bo->sizes[plane]; 67 struct drm_exynos_gem_create gem_create; 68 69 memset(&gem_create, 0, sizeof(gem_create)); 70 gem_create.size = size; 71 gem_create.flags = EXYNOS_BO_NONCONTIG; 72 73 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &gem_create); 74 if (ret) { 75 drv_log("DRM_IOCTL_EXYNOS_GEM_CREATE failed (size=%zu)\n", size); 76 goto cleanup_planes; 77 } 78 79 bo->handles[plane].u32 = gem_create.handle; 80 } 81 82 return 0; 83 84 cleanup_planes: 85 for (; plane != 0; plane--) { 86 struct drm_gem_close gem_close; 87 memset(&gem_close, 0, sizeof(gem_close)); 88 gem_close.handle = bo->handles[plane - 1].u32; 89 int gem_close_ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close); 90 if (gem_close_ret) { 91 drv_log("DRM_IOCTL_GEM_CLOSE failed: %d\n", gem_close_ret); 92 } 93 } 94 95 return ret; 96 } 97 98 /* 99 * Use dumb mapping with exynos even though a GEM buffer is created. 100 * libdrm does the same thing in exynos_drm.c 101 */ 102 const struct backend backend_exynos = { 103 .name = "exynos", 104 .init = exynos_init, 105 .bo_create = exynos_bo_create, 106 .bo_destroy = drv_gem_bo_destroy, 107 .bo_import = drv_prime_bo_import, 108 .bo_map = drv_dumb_bo_map, 109 .bo_unmap = drv_bo_munmap, 110 }; 111 112 #endif 113
