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 <inttypes.h>
  13 #include <poll.h>
  14 #include <stdio.h>
  15 #include <string.h>
  16 #include <sys/mman.h>
  17 #include <unistd.h>
  18 #include <xf86drm.h>
  19 #include <mediatek_drm.h>
  20 // clang-format on
  21
  22 #include "drv_priv.h"
  23 #include "helpers.h"
  24 #include "util.h"
  25
  26 #define TILE_TYPE_LINEAR 0
  27
  28 struct mediatek_private_map_data {
  29         void *cached_addr;
  30         void *gem_addr;
  31         int prime_fd;
  32 };
  33
  34 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
  35                                                   DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
  36                                                   DRM_FORMAT_XRGB8888 };
  37
  38 #ifdef MTK_MT8183
  39 static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV21, DRM_FORMAT_NV12,
  40                                                    DRM_FORMAT_YUYV, DRM_FORMAT_YVU420,
  41                                                    DRM_FORMAT_YVU420_ANDROID };
  42 #else
  43 static const uint32_t texture_source_formats[] = { DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID,
  44                                                    DRM_FORMAT_NV12 };
  45 #endif
  46
  47 static int mediatek_init(struct driver *drv)
  48 {
  49         struct format_metadata metadata;
  50
  51         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
  52                              &LINEAR_METADATA, BO_USE_RENDER_MASK);
  53
  54         drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
  55                              &LINEAR_METADATA, BO_USE_TEXTURE_MASK);
  56
  57         drv_add_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA,
  58                             BO_USE_SW_MASK | BO_USE_LINEAR | BO_USE_PROTECTED);
  59         /*
  60          * Chrome uses DMA-buf mmap to write to YV12 buffers, which are then accessed by the
  61          * Video Encoder Accelerator (VEA). It could also support NV12 potentially in the future.
  62          */
  63         drv_modify_combination(drv, DRM_FORMAT_YVU420, &LINEAR_METADATA, BO_USE_HW_VIDEO_ENCODER);
  64         drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA, BO_USE_HW_VIDEO_ENCODER);
  65
  66         /* Android CTS tests require this. */
  67         drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
  68
  69         /* Support BO_USE_HW_VIDEO_DECODER for protected content minigbm allocations. */
  70         metadata.tiling = TILE_TYPE_LINEAR;
  71         metadata.priority = 1;
  72         metadata.modifier = DRM_FORMAT_MOD_LINEAR;
  73         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_DECODER);
  74         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata, BO_USE_HW_VIDEO_DECODER);
  75         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_DECODER);
  76
  77 #ifdef MTK_MT8183
  78         /* Only for MT8183 Camera subsystem */
  79         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  80                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  81         drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
  82                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  83         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  84                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  85         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
  86                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  87         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
  88                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  89 #endif
  90
  91         return drv_modify_linear_combinations(drv);
  92 }
  93
  94 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
  95                                              uint32_t format, const uint64_t *modifiers,
  96                                              uint32_t count)
  97 {
  98         int ret;
  99         size_t plane;
 100         uint32_t stride;
 101         struct drm_mtk_gem_create gem_create;
 102
 103         if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
 104                 errno = EINVAL;
 105                 drv_log("no usable modifier found\n");
 106                 return -EINVAL;
 107         }
 108
 109         /*
 110          * Since the ARM L1 cache line size is 64 bytes, align to that as a
 111          * performance optimization.
 112          */
 113         stride = drv_stride_from_format(format, width, 0);
 114         stride = ALIGN(stride, 64);
 115         drv_bo_from_format(bo, stride, height, format);
 116
 117         memset(&gem_create, 0, sizeof(gem_create));
 118         gem_create.size = bo->meta.total_size;
 119
 120         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
 121         if (ret) {
 122                 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
 123                 return -errno;
 124         }
 125
 126         for (plane = 0; plane < bo->meta.num_planes; plane++)
 127                 bo->handles[plane].u32 = gem_create.handle;
 128
 129         return 0;
 130 }
 131
 132 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 133                               uint64_t use_flags)
 134 {
 135         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 136         return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
 137                                                  ARRAY_SIZE(modifiers));
 138 }
 139
 140 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 141 {
 142         int ret, prime_fd;
 143         struct drm_mtk_gem_map_off gem_map;
 144         struct mediatek_private_map_data *priv;
 145
 146         memset(&gem_map, 0, sizeof(gem_map));
 147         gem_map.handle = bo->handles[0].u32;
 148
 149         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
 150         if (ret) {
 151                 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
 152                 return MAP_FAILED;
 153         }
 154
 155         ret = drmPrimeHandleToFD(bo->drv->fd, gem_map.handle, DRM_CLOEXEC, &prime_fd);
 156         if (ret) {
 157                 drv_log("Failed to get a prime fd\n");
 158                 return MAP_FAILED;
 159         }
 160
 161         void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 162                           gem_map.offset);
 163
 164         vma->length = bo->meta.total_size;
 165
 166         priv = calloc(1, sizeof(*priv));
 167         priv->prime_fd = prime_fd;
 168         vma->priv = priv;
 169
 170         if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
 171                 priv->cached_addr = calloc(1, bo->meta.total_size);
 172                 priv->gem_addr = addr;
 173                 addr = priv->cached_addr;
 174         }
 175
 176         return addr;
 177 }
 178
 179 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
 180 {
 181         if (vma->priv) {
 182                 struct mediatek_private_map_data *priv = vma->priv;
 183
 184                 if (priv->cached_addr) {
 185                         vma->addr = priv->gem_addr;
 186                         free(priv->cached_addr);
 187                 }
 188
 189                 close(priv->prime_fd);
 190                 free(priv);
 191                 vma->priv = NULL;
 192         }
 193
 194         return munmap(vma->addr, vma->length);
 195 }
 196
 197 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
 198 {
 199         struct mediatek_private_map_data *priv = mapping->vma->priv;
 200
 201         if (priv) {
 202                 struct pollfd fds = {
 203                         .fd = priv->prime_fd,
 204                 };
 205
 206                 if (mapping->vma->map_flags & BO_MAP_WRITE)
 207                         fds.events |= POLLOUT;
 208
 209                 if (mapping->vma->map_flags & BO_MAP_READ)
 210                         fds.events |= POLLIN;
 211
 212                 poll(&fds, 1, -1);
 213                 if (fds.revents != fds.events)
 214                         drv_log("poll prime_fd failed\n");
 215
 216                 if (priv->cached_addr)
 217                         memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
 218         }
 219
 220         return 0;
 221 }
 222
 223 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
 224 {
 225         struct mediatek_private_map_data *priv = mapping->vma->priv;
 226         if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
 227                 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
 228
 229         return 0;
 230 }
 231
 232 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 233 {
 234         switch (format) {
 235         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 236 #ifdef MTK_MT8183
 237                 /* Only for MT8183 Camera subsystem requires NV12. */
 238                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
 239                         return DRM_FORMAT_NV12;
 240 #endif
 241                 /*HACK: See b/28671744 */
 242                 return DRM_FORMAT_XBGR8888;
 243         case DRM_FORMAT_FLEX_YCbCr_420_888:
 244 #ifdef MTK_MT8183
 245                 /* MT8183 camera and decoder subsystems require NV12. */
 246                 if (use_flags &
 247                     (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_DECODER))
 248                         return DRM_FORMAT_NV12;
 249 #endif
 250                 return DRM_FORMAT_YVU420;
 251         default:
 252                 return format;
 253         }
 254 }
 255
 256 const struct backend backend_mediatek = {
 257         .name = "mediatek",
 258         .init = mediatek_init,
 259         .bo_create = mediatek_bo_create,
 260         .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
 261         .bo_destroy = drv_gem_bo_destroy,
 262         .bo_import = drv_prime_bo_import,
 263         .bo_map = mediatek_bo_map,
 264         .bo_unmap = mediatek_bo_unmap,
 265         .bo_invalidate = mediatek_bo_invalidate,
 266         .bo_flush = mediatek_bo_flush,
 267         .resolve_format = mediatek_resolve_format,
 268 };
 269
 270 #endif