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 | BO_USE_SCANOUT);
  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         /* Private formats for private reprocessing in camera */
  90         drv_add_combination(drv, DRM_FORMAT_MTISP_SXYZW10, &metadata,
  91                             BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK);
  92 #endif
  93
  94         return drv_modify_linear_combinations(drv);
  95 }
  96
  97 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
  98                                              uint32_t format, const uint64_t *modifiers,
  99                                              uint32_t count)
 100 {
 101         int ret;
 102         size_t plane;
 103         uint32_t stride;
 104         struct drm_mtk_gem_create gem_create;
 105
 106         if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
 107                 errno = EINVAL;
 108                 drv_log("no usable modifier found\n");
 109                 return -EINVAL;
 110         }
 111
 112         /*
 113          * Since the ARM L1 cache line size is 64 bytes, align to that as a
 114          * performance optimization.
 115          */
 116         stride = drv_stride_from_format(format, width, 0);
 117         stride = ALIGN(stride, 64);
 118
 119         if (bo->meta.use_flags & BO_USE_HW_VIDEO_ENCODER) {
 120                 uint32_t aligned_height = ALIGN(height, 32);
 121                 uint32_t padding[DRV_MAX_PLANES] = { 0 };
 122
 123                 for (plane = 0; plane < bo->meta.num_planes; ++plane) {
 124                         uint32_t plane_stride = drv_stride_from_format(format, stride, plane);
 125                         padding[plane] = plane_stride *
 126                                          (32 / drv_vertical_subsampling_from_format(format, plane));
 127                 }
 128
 129                 drv_bo_from_format_and_padding(bo, stride, aligned_height, format, padding);
 130         } else {
 131 #ifdef MTK_MT8183
 132                 /*
 133                  * JPEG Encoder Accelerator requires 16x16 alignment. We want the buffer
 134                  * from camera can be put in JEA directly so align the height to 16
 135                  * bytes.
 136                  */
 137                 if (format == DRM_FORMAT_NV12)
 138                         height = ALIGN(height, 16);
 139 #endif
 140                 drv_bo_from_format(bo, stride, height, format);
 141         }
 142
 143         memset(&gem_create, 0, sizeof(gem_create));
 144         gem_create.size = bo->meta.total_size;
 145
 146         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
 147         if (ret) {
 148                 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
 149                 return -errno;
 150         }
 151
 152         for (plane = 0; plane < bo->meta.num_planes; plane++)
 153                 bo->handles[plane].u32 = gem_create.handle;
 154
 155         return 0;
 156 }
 157
 158 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 159                               uint64_t use_flags)
 160 {
 161         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 162         return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
 163                                                  ARRAY_SIZE(modifiers));
 164 }
 165
 166 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 167 {
 168         int ret, prime_fd;
 169         struct drm_mtk_gem_map_off gem_map;
 170         struct mediatek_private_map_data *priv;
 171
 172         memset(&gem_map, 0, sizeof(gem_map));
 173         gem_map.handle = bo->handles[0].u32;
 174
 175         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
 176         if (ret) {
 177                 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
 178                 return MAP_FAILED;
 179         }
 180
 181         prime_fd = drv_bo_get_plane_fd(bo, 0);
 182         if (prime_fd < 0) {
 183                 drv_log("Failed to get a prime fd\n");
 184                 return MAP_FAILED;
 185         }
 186
 187         void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 188                           gem_map.offset);
 189
 190         vma->length = bo->meta.total_size;
 191
 192         priv = calloc(1, sizeof(*priv));
 193         priv->prime_fd = prime_fd;
 194         vma->priv = priv;
 195
 196         if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
 197                 priv->cached_addr = calloc(1, bo->meta.total_size);
 198                 priv->gem_addr = addr;
 199                 addr = priv->cached_addr;
 200         }
 201
 202         return addr;
 203 }
 204
 205 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
 206 {
 207         if (vma->priv) {
 208                 struct mediatek_private_map_data *priv = vma->priv;
 209
 210                 if (priv->cached_addr) {
 211                         vma->addr = priv->gem_addr;
 212                         free(priv->cached_addr);
 213                 }
 214
 215                 close(priv->prime_fd);
 216                 free(priv);
 217                 vma->priv = NULL;
 218         }
 219
 220         return munmap(vma->addr, vma->length);
 221 }
 222
 223 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
 224 {
 225         struct mediatek_private_map_data *priv = mapping->vma->priv;
 226
 227         if (priv) {
 228                 struct pollfd fds = {
 229                         .fd = priv->prime_fd,
 230                 };
 231
 232                 if (mapping->vma->map_flags & BO_MAP_WRITE)
 233                         fds.events |= POLLOUT;
 234
 235                 if (mapping->vma->map_flags & BO_MAP_READ)
 236                         fds.events |= POLLIN;
 237
 238                 poll(&fds, 1, -1);
 239                 if (fds.revents != fds.events)
 240                         drv_log("poll prime_fd failed\n");
 241
 242                 if (priv->cached_addr)
 243                         memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
 250 {
 251         struct mediatek_private_map_data *priv = mapping->vma->priv;
 252         if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
 253                 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
 254
 255         return 0;
 256 }
 257
 258 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 259 {
 260         switch (format) {
 261         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 262 #ifdef MTK_MT8183
 263                 /* Only MT8183 Camera subsystem offers private reprocessing
 264                  * capability. CAMERA_READ indicates the buffer is intended for
 265                  * reprocessing and hence given the private format for MTK. */
 266                 if (use_flags & BO_USE_CAMERA_READ)
 267                         return DRM_FORMAT_MTISP_SXYZW10;
 268                 /* For non-reprocessing uses, only MT8183 Camera subsystem
 269                  * requires NV12. */
 270                 else if (use_flags & BO_USE_CAMERA_WRITE)
 271                         return DRM_FORMAT_NV12;
 272 #endif
 273                 /*HACK: See b/28671744 */
 274                 return DRM_FORMAT_XBGR8888;
 275         case DRM_FORMAT_FLEX_YCbCr_420_888:
 276 #ifdef MTK_MT8183
 277                 /* MT8183 camera and decoder subsystems require NV12. */
 278                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE |
 279                                  BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER)) {
 280                         return DRM_FORMAT_NV12;
 281                 }
 282 #endif
 283                 return DRM_FORMAT_YVU420;
 284         default:
 285                 return format;
 286         }
 287 }
 288
 289 const struct backend backend_mediatek = {
 290         .name = "mediatek",
 291         .init = mediatek_init,
 292         .bo_create = mediatek_bo_create,
 293         .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
 294         .bo_destroy = drv_gem_bo_destroy,
 295         .bo_import = drv_prime_bo_import,
 296         .bo_map = mediatek_bo_map,
 297         .bo_unmap = mediatek_bo_unmap,
 298         .bo_invalidate = mediatek_bo_invalidate,
 299         .bo_flush = mediatek_bo_flush,
 300         .resolve_format = mediatek_resolve_format,
 301 };
 302
 303 #endif