1 /* 2 * Copyright 2015 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_MEDIATEK 8 9 // clang-format off 10 #include <stdio.h> 11 #include <string.h> 12 #include <sys/mman.h> 13 #include <xf86drm.h> 14 #include <mediatek_drm.h> 15 // clang-format on 16 17 #include "drv_priv.h" 18 #include "helpers.h" 19 #include "util.h" 20 21 struct mediatek_private_map_data { 22 void *cached_addr; 23 void *gem_addr; 24 }; 25 26 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888, 27 DRM_FORMAT_BGR888, DRM_FORMAT_RGB565, 28 DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 }; 29 30 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420, 31 DRM_FORMAT_YVU420_ANDROID }; 32 33 static int mediatek_init(struct driver *drv) 34 { 35 drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats), 36 &LINEAR_METADATA, BO_USE_RENDER_MASK); 37 38 drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats), 39 &LINEAR_METADATA, BO_USE_TEXTURE_MASK); 40 41 return drv_modify_linear_combinations(drv); 42 } 43 44 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, 45 uint64_t use_flags) 46 { 47 int ret; 48 size_t plane; 49 uint32_t stride; 50 struct drm_mtk_gem_create gem_create; 51 52 /* 53 * Since the ARM L1 cache line size is 64 bytes, align to that as a 54 * performance optimization. 55 */ 56 stride = drv_stride_from_format(format, width, 0); 57 stride = ALIGN(stride, 64); 58 drv_bo_from_format(bo, stride, height, format); 59 60 memset(&gem_create, 0, sizeof(gem_create)); 61 gem_create.size = bo->total_size; 62 63 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create); 64 if (ret) { 65 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n", gem_create.size); 66 return ret; 67 } 68 69 for (plane = 0; plane < bo->num_planes; plane++) 70 bo->handles[plane].u32 = gem_create.handle; 71 72 return 0; 73 } 74 75 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags) 76 { 77 int ret; 78 struct drm_mtk_gem_map_off gem_map; 79 struct mediatek_private_map_data *priv; 80 81 memset(&gem_map, 0, sizeof(gem_map)); 82 gem_map.handle = bo->handles[0].u32; 83 84 ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map); 85 if (ret) { 86 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n"); 87 return MAP_FAILED; 88 } 89 90 void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd, 91 gem_map.offset); 92 93 vma->length = bo->total_size; 94 95 if (bo->use_flags & BO_USE_RENDERSCRIPT) { 96 priv = calloc(1, sizeof(*priv)); 97 priv->cached_addr = calloc(1, bo->total_size); 98 priv->gem_addr = addr; 99 vma->priv = priv; 100 addr = priv->cached_addr; 101 } 102 103 return addr; 104 } 105 106 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma) 107 { 108 if (vma->priv) { 109 struct mediatek_private_map_data *priv = vma->priv; 110 vma->addr = priv->gem_addr; 111 free(priv->cached_addr); 112 free(priv); 113 vma->priv = NULL; 114 } 115 116 return munmap(vma->addr, vma->length); 117 } 118 119 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping) 120 { 121 if (mapping->vma->priv) { 122 struct mediatek_private_map_data *priv = mapping->vma->priv; 123 memcpy(priv->cached_addr, priv->gem_addr, bo->total_size); 124 } 125 126 return 0; 127 } 128 129 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping) 130 { 131 struct mediatek_private_map_data *priv = mapping->vma->priv; 132 if (priv && (mapping->vma->map_flags & BO_MAP_WRITE)) 133 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size); 134 135 return 0; 136 } 137 138 static uint32_t mediatek_resolve_format(uint32_t format, uint64_t use_flags) 139 { 140 switch (format) { 141 case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED: 142 /*HACK: See b/28671744 */ 143 return DRM_FORMAT_XBGR8888; 144 case DRM_FORMAT_FLEX_YCbCr_420_888: 145 return DRM_FORMAT_YVU420; 146 default: 147 return format; 148 } 149 } 150 151 const struct backend backend_mediatek = { 152 .name = "mediatek", 153 .init = mediatek_init, 154 .bo_create = mediatek_bo_create, 155 .bo_destroy = drv_gem_bo_destroy, 156 .bo_import = drv_prime_bo_import, 157 .bo_map = mediatek_bo_map, 158 .bo_unmap = mediatek_bo_unmap, 159 .bo_invalidate = mediatek_bo_invalidate, 160 .bo_flush = mediatek_bo_flush, 161 .resolve_format = mediatek_resolve_format, 162 }; 163 164 #endif 165
