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         /* Android CTS tests require this. */
  61         drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
  62
  63         /* Support BO_USE_HW_VIDEO_DECODER for protected content minigbm allocations. */
  64         metadata.tiling = TILE_TYPE_LINEAR;
  65         metadata.priority = 1;
  66         metadata.modifier = DRM_FORMAT_MOD_LINEAR;
  67         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata, BO_USE_HW_VIDEO_DECODER);
  68         drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &metadata, BO_USE_HW_VIDEO_DECODER);
  69         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_DECODER);
  70
  71         /*
  72          * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB for input/output from
  73          * hardware decoder/encoder.
  74          */
  75         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
  76                                BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER);
  77
  78 #ifdef MTK_MT8183
  79         /* NV12 format for encoding and display. */
  80         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  81                                BO_USE_SCANOUT | BO_USE_HW_VIDEO_ENCODER);
  82
  83         /* Only for MT8183 Camera subsystem */
  84         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  85                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  86         drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
  87                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  88         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  89                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  90         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
  91                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  92         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
  93                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  94         /* Private formats for private reprocessing in camera */
  95         drv_add_combination(drv, DRM_FORMAT_MTISP_SXYZW10, &metadata,
  96                             BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK);
  97 #endif
  98
  99         return drv_modify_linear_combinations(drv);
 100 }
 101
 102 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
 103                                              uint32_t format, const uint64_t *modifiers,
 104                                              uint32_t count)
 105 {
 106         int ret;
 107         size_t plane;
 108         uint32_t stride;
 109         struct drm_mtk_gem_create gem_create;
 110
 111         if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
 112                 errno = EINVAL;
 113                 drv_log("no usable modifier found\n");
 114                 return -EINVAL;
 115         }
 116
 117         /*
 118          * Since the ARM L1 cache line size is 64 bytes, align to that as a
 119          * performance optimization.
 120          */
 121         stride = drv_stride_from_format(format, width, 0);
 122         stride = ALIGN(stride, 64);
 123
 124         if (bo->meta.use_flags & BO_USE_HW_VIDEO_ENCODER) {
 125                 uint32_t aligned_height = ALIGN(height, 32);
 126                 uint32_t padding[DRV_MAX_PLANES] = { 0 };
 127
 128                 for (plane = 0; plane < bo->meta.num_planes; ++plane) {
 129                         uint32_t plane_stride = drv_stride_from_format(format, stride, plane);
 130                         padding[plane] = plane_stride *
 131                                          (32 / drv_vertical_subsampling_from_format(format, plane));
 132                 }
 133
 134                 drv_bo_from_format_and_padding(bo, stride, aligned_height, format, padding);
 135         } else {
 136 #ifdef MTK_MT8183
 137                 /*
 138                  * JPEG Encoder Accelerator requires 16x16 alignment. We want the buffer
 139                  * from camera can be put in JEA directly so align the height to 16
 140                  * bytes.
 141                  */
 142                 if (format == DRM_FORMAT_NV12)
 143                         height = ALIGN(height, 16);
 144 #endif
 145                 drv_bo_from_format(bo, stride, height, format);
 146         }
 147
 148         memset(&gem_create, 0, sizeof(gem_create));
 149         gem_create.size = bo->meta.total_size;
 150
 151         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
 152         if (ret) {
 153                 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
 154                 return -errno;
 155         }
 156
 157         for (plane = 0; plane < bo->meta.num_planes; plane++)
 158                 bo->handles[plane].u32 = gem_create.handle;
 159
 160         return 0;
 161 }
 162
 163 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 164                               uint64_t use_flags)
 165 {
 166         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 167         return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
 168                                                  ARRAY_SIZE(modifiers));
 169 }
 170
 171 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 172 {
 173         int ret, prime_fd;
 174         struct drm_mtk_gem_map_off gem_map;
 175         struct mediatek_private_map_data *priv;
 176
 177         memset(&gem_map, 0, sizeof(gem_map));
 178         gem_map.handle = bo->handles[0].u32;
 179
 180         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
 181         if (ret) {
 182                 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
 183                 return MAP_FAILED;
 184         }
 185
 186         prime_fd = drv_bo_get_plane_fd(bo, 0);
 187         if (prime_fd < 0) {
 188                 drv_log("Failed to get a prime fd\n");
 189                 return MAP_FAILED;
 190         }
 191
 192         void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 193                           gem_map.offset);
 194
 195         vma->length = bo->meta.total_size;
 196
 197         priv = calloc(1, sizeof(*priv));
 198         priv->prime_fd = prime_fd;
 199         vma->priv = priv;
 200
 201         if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
 202                 priv->cached_addr = calloc(1, bo->meta.total_size);
 203                 priv->gem_addr = addr;
 204                 addr = priv->cached_addr;
 205         }
 206
 207         return addr;
 208 }
 209
 210 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
 211 {
 212         if (vma->priv) {
 213                 struct mediatek_private_map_data *priv = vma->priv;
 214
 215                 if (priv->cached_addr) {
 216                         vma->addr = priv->gem_addr;
 217                         free(priv->cached_addr);
 218                 }
 219
 220                 close(priv->prime_fd);
 221                 free(priv);
 222                 vma->priv = NULL;
 223         }
 224
 225         return munmap(vma->addr, vma->length);
 226 }
 227
 228 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
 229 {
 230         struct mediatek_private_map_data *priv = mapping->vma->priv;
 231
 232         if (priv) {
 233                 struct pollfd fds = {
 234                         .fd = priv->prime_fd,
 235                 };
 236
 237                 if (mapping->vma->map_flags & BO_MAP_WRITE)
 238                         fds.events |= POLLOUT;
 239
 240                 if (mapping->vma->map_flags & BO_MAP_READ)
 241                         fds.events |= POLLIN;
 242
 243                 poll(&fds, 1, -1);
 244                 if (fds.revents != fds.events)
 245                         drv_log("poll prime_fd failed\n");
 246
 247                 if (priv->cached_addr)
 248                         memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
 249         }
 250
 251         return 0;
 252 }
 253
 254 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
 255 {
 256         struct mediatek_private_map_data *priv = mapping->vma->priv;
 257         if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
 258                 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
 259
 260         return 0;
 261 }
 262
 263 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 264 {
 265         switch (format) {
 266         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 267 #ifdef MTK_MT8183
 268                 /* Only MT8183 Camera subsystem offers private reprocessing
 269                  * capability. CAMERA_READ indicates the buffer is intended for
 270                  * reprocessing and hence given the private format for MTK. */
 271                 if (use_flags & BO_USE_CAMERA_READ)
 272                         return DRM_FORMAT_MTISP_SXYZW10;
 273                 /* For non-reprocessing uses, only MT8183 Camera subsystem
 274                  * requires NV12. */
 275                 else if (use_flags & BO_USE_CAMERA_WRITE)
 276                         return DRM_FORMAT_NV12;
 277 #endif
 278                 /*HACK: See b/28671744 */
 279                 return DRM_FORMAT_XBGR8888;
 280         case DRM_FORMAT_FLEX_YCbCr_420_888:
 281 #ifdef MTK_MT8183
 282                 /* MT8183 camera and decoder subsystems require NV12. */
 283                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE |
 284                                  BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER)) {
 285                         return DRM_FORMAT_NV12;
 286                 }
 287 #endif
 288                 return DRM_FORMAT_YVU420;
 289         default:
 290                 return format;
 291         }
 292 }
 293
 294 const struct backend backend_mediatek = {
 295         .name = "mediatek",
 296         .init = mediatek_init,
 297         .bo_create = mediatek_bo_create,
 298         .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
 299         .bo_destroy = drv_gem_bo_destroy,
 300         .bo_import = drv_prime_bo_import,
 301         .bo_map = mediatek_bo_map,
 302         .bo_unmap = mediatek_bo_unmap,
 303         .bo_invalidate = mediatek_bo_invalidate,
 304         .bo_flush = mediatek_bo_flush,
 305         .resolve_format = mediatek_resolve_format,
 306 };
 307
 308 #endif