mediatek.c

   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 <errno.h>
  11 #include <fcntl.h>
  12 #include <poll.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <sys/mman.h>
  16 #include <unistd.h>
  17 #include <xf86drm.h>
  18 #include <mediatek_drm.h>
  19 // clang-format on
  20
  21 #include "drv_priv.h"
  22 #include "helpers.h"
  23 #include "util.h"
  24
  25 #define TILE_TYPE_LINEAR 0
  26
  27 struct mediatek_private_map_data {
  28         void *cached_addr;
  29         void *gem_addr;
  30         int prime_fd;
  31 };
  32
  33 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
  34                                                   DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
  35                                                   DRM_FORMAT_XRGB8888 };
  36
  37 #ifdef MTK_MT8183
  38 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_NV21, DRM_FORMAT_NV12,
  39                                                    DRM_FORMAT_YUYV, DRM_FORMAT_YVU420,
  40                                                    DRM_FORMAT_YVU420_ANDROID };
  41 #else
  42 static const uint32_t texture_source_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_YVU420,
  43                                                    DRM_FORMAT_YVU420_ANDROID };
  44 #endif
  45
  46 static int mediatek_init(struct driver *drv)
  47 {
  48         struct format_metadata metadata;
  49
  50         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
  51                              &LINEAR_METADATA, BO_USE_RENDER_MASK);
  52
  53         drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
  54                              &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
  55
  56         /* Android CTS tests require this. */
  57         drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
  58
  59         /* Support BO_USE_HW_VIDEO_DECODER for protected content minigbm allocations. */
  60         metadata.tiling = TILE_TYPE_LINEAR;
  61         metadata.priority = 1;
  62         metadata.modifier = DRM_FORMAT_MOD_LINEAR;
  63         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_DECODER);
  64         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata, BO_USE_HW_VIDEO_DECODER);
  65
  66 #ifdef MTK_MT8183
  67         /* Only for MT8183 Camera subsystem */
  68         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  69                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  70         drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
  71                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  72         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  73                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  74         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
  75                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  76         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
  77                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  78 #endif
  79
  80         return drv_modify_linear_combinations(drv);
  81 }
  82
  83 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
  84                                              uint32_t format, const uint64_t *modifiers,
  85                                              uint32_t count)
  86 {
  87         int ret;
  88         size_t plane;
  89         uint32_t stride;
  90         struct drm_mtk_gem_create gem_create;
  91
  92         if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
  93                 errno = EINVAL;
  94                 drv_log("no usable modifier found\n");
  95                 return -EINVAL;
  96         }
  97
  98         /*
  99          * Since the ARM L1 cache line size is 64 bytes, align to that as a
 100          * performance optimization.
 101          */
 102         stride = drv_stride_from_format(format, width, 0);
 103         stride = ALIGN(stride, 64);
 104         drv_bo_from_format(bo, stride, height, format);
 105
 106         memset(&gem_create, 0, sizeof(gem_create));
 107         gem_create.size = bo->total_size;
 108
 109         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
 110         if (ret) {
 111                 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%llu)\n", gem_create.size);
 112                 return -errno;
 113         }
 114
 115         for (plane = 0; plane < bo->num_planes; plane++)
 116                 bo->handles[plane].u32 = gem_create.handle;
 117
 118         return 0;
 119 }
 120
 121 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 122                               uint64_t use_flags)
 123 {
 124         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 125         return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
 126                                                  ARRAY_SIZE(modifiers));
 127 }
 128
 129 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 130 {
 131         int ret, prime_fd;
 132         struct drm_mtk_gem_map_off gem_map;
 133         struct mediatek_private_map_data *priv;
 134
 135         memset(&gem_map, 0, sizeof(gem_map));
 136         gem_map.handle = bo->handles[0].u32;
 137
 138         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
 139         if (ret) {
 140                 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
 141                 return MAP_FAILED;
 142         }
 143
 144         ret = drmPrimeHandleToFD(bo->drv->fd, gem_map.handle, DRM_CLOEXEC, &prime_fd);
 145         if (ret) {
 146                 drv_log("Failed to get a prime fd\n");
 147                 return MAP_FAILED;
 148         }
 149
 150         void *addr = mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 151                           gem_map.offset);
 152
 153         vma->length = bo->total_size;
 154
 155         priv = calloc(1, sizeof(*priv));
 156         priv->prime_fd = prime_fd;
 157         vma->priv = priv;
 158
 159         if (bo->use_flags & BO_USE_RENDERSCRIPT) {
 160                 priv->cached_addr = calloc(1, bo->total_size);
 161                 priv->gem_addr = addr;
 162                 addr = priv->cached_addr;
 163         }
 164
 165         return addr;
 166 }
 167
 168 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
 169 {
 170         if (vma->priv) {
 171                 struct mediatek_private_map_data *priv = vma->priv;
 172
 173                 if (priv->cached_addr) {
 174                         vma->addr = priv->gem_addr;
 175                         free(priv->cached_addr);
 176                 }
 177
 178                 close(priv->prime_fd);
 179                 free(priv);
 180                 vma->priv = NULL;
 181         }
 182
 183         return munmap(vma->addr, vma->length);
 184 }
 185
 186 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
 187 {
 188         struct mediatek_private_map_data *priv = mapping->vma->priv;
 189
 190         if (priv) {
 191                 struct pollfd fds = {
 192                         .fd = priv->prime_fd,
 193                 };
 194
 195                 if (mapping->vma->map_flags & BO_MAP_WRITE)
 196                         fds.events |= POLLOUT;
 197
 198                 if (mapping->vma->map_flags & BO_MAP_READ)
 199                         fds.events |= POLLIN;
 200
 201                 poll(&fds, 1, -1);
 202                 if (fds.revents != fds.events)
 203                         drv_log("poll prime_fd failed\n");
 204
 205                 if (priv->cached_addr)
 206                         memcpy(priv->cached_addr, priv->gem_addr, bo->total_size);
 207         }
 208
 209         return 0;
 210 }
 211
 212 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
 213 {
 214         struct mediatek_private_map_data *priv = mapping->vma->priv;
 215         if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
 216                 memcpy(priv->gem_addr, priv->cached_addr, bo->total_size);
 217
 218         return 0;
 219 }
 220
 221 static uint32_t mediatek_resolve_format(uint32_t format, uint64_t use_flags)
 222 {
 223         switch (format) {
 224         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 225 #ifdef MTK_MT8183
 226                 /* Only for MT8183 Camera subsystem requires NV12. */
 227                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
 228                         return DRM_FORMAT_NV12;
 229 #endif
 230                 /*HACK: See b/28671744 */
 231                 return DRM_FORMAT_XBGR8888;
 232         case DRM_FORMAT_FLEX_YCbCr_420_888:
 233 #ifdef MTK_MT8183
 234                 /* Only for MT8183 Camera subsystem requires NV12 */
 235                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
 236                         return DRM_FORMAT_NV12;
 237 #endif
 238                 return DRM_FORMAT_YVU420;
 239         default:
 240                 return format;
 241         }
 242 }
 243
 244 const struct backend backend_mediatek = {
 245         .name = "mediatek",
 246         .init = mediatek_init,
 247         .bo_create = mediatek_bo_create,
 248         .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
 249         .bo_destroy = drv_gem_bo_destroy,
 250         .bo_import = drv_prime_bo_import,
 251         .bo_map = mediatek_bo_map,
 252         .bo_unmap = mediatek_bo_unmap,
 253         .bo_invalidate = mediatek_bo_invalidate,
 254         .bo_flush = mediatek_bo_flush,
 255         .resolve_format = mediatek_resolve_format,
 256 };
 257
 258 #endif