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 #ifdef MTK_MT8183
  70         // TODO(hiroh): Switch to use NV12 for video decoder on MT8173 as well.
  71         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata, BO_USE_HW_VIDEO_DECODER);
  72 #endif
  73
  74         /*
  75          * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB for input/output from
  76          * hardware decoder/encoder.
  77          */
  78         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
  79                                BO_USE_HW_VIDEO_DECODER | BO_USE_HW_VIDEO_ENCODER |
  80                                    BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  81
  82         /* NV12 format for encoding and display. */
  83         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  84                                BO_USE_SCANOUT | BO_USE_HW_VIDEO_ENCODER | BO_USE_CAMERA_READ |
  85                                    BO_USE_CAMERA_WRITE);
  86
  87 #ifdef MTK_MT8183
  88         /* Only for MT8183 Camera subsystem */
  89         drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata,
  90                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  91         drv_modify_combination(drv, DRM_FORMAT_YUYV, &metadata,
  92                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  93         drv_modify_combination(drv, DRM_FORMAT_YVU420, &metadata,
  94                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
  95         /* Private formats for private reprocessing in camera */
  96         drv_add_combination(drv, DRM_FORMAT_MTISP_SXYZW10, &metadata,
  97                             BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SW_MASK);
  98 #endif
  99
 100         return drv_modify_linear_combinations(drv);
 101 }
 102
 103 static int mediatek_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
 104                                              uint32_t format, const uint64_t *modifiers,
 105                                              uint32_t count)
 106 {
 107         int ret;
 108         size_t plane;
 109         uint32_t stride;
 110         struct drm_mtk_gem_create gem_create;
 111
 112         if (!drv_has_modifier(modifiers, count, DRM_FORMAT_MOD_LINEAR)) {
 113                 errno = EINVAL;
 114                 drv_log("no usable modifier found\n");
 115                 return -EINVAL;
 116         }
 117
 118         /*
 119          * Since the ARM L1 cache line size is 64 bytes, align to that as a
 120          * performance optimization.
 121          */
 122         stride = drv_stride_from_format(format, width, 0);
 123         stride = ALIGN(stride, 64);
 124
 125         if (bo->meta.use_flags & BO_USE_HW_VIDEO_ENCODER) {
 126                 uint32_t aligned_height = ALIGN(height, 32);
 127                 uint32_t padding[DRV_MAX_PLANES] = { 0 };
 128
 129                 for (plane = 0; plane < bo->meta.num_planes; ++plane) {
 130                         uint32_t plane_stride = drv_stride_from_format(format, stride, plane);
 131                         padding[plane] = plane_stride *
 132                                          (32 / drv_vertical_subsampling_from_format(format, plane));
 133                 }
 134
 135                 drv_bo_from_format_and_padding(bo, stride, aligned_height, format, padding);
 136         } else {
 137 #ifdef MTK_MT8183
 138                 /*
 139                  * JPEG Encoder Accelerator requires 16x16 alignment. We want the buffer
 140                  * from camera can be put in JEA directly so align the height to 16
 141                  * bytes.
 142                  */
 143                 if (format == DRM_FORMAT_NV12)
 144                         height = ALIGN(height, 16);
 145 #endif
 146                 drv_bo_from_format(bo, stride, height, format);
 147         }
 148
 149         memset(&gem_create, 0, sizeof(gem_create));
 150         gem_create.size = bo->meta.total_size;
 151
 152         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_CREATE, &gem_create);
 153         if (ret) {
 154                 drv_log("DRM_IOCTL_MTK_GEM_CREATE failed (size=%" PRIu64 ")\n", gem_create.size);
 155                 return -errno;
 156         }
 157
 158         for (plane = 0; plane < bo->meta.num_planes; plane++)
 159                 bo->handles[plane].u32 = gem_create.handle;
 160
 161         return 0;
 162 }
 163
 164 static int mediatek_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 165                               uint64_t use_flags)
 166 {
 167         uint64_t modifiers[] = { DRM_FORMAT_MOD_LINEAR };
 168         return mediatek_bo_create_with_modifiers(bo, width, height, format, modifiers,
 169                                                  ARRAY_SIZE(modifiers));
 170 }
 171
 172 static void *mediatek_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 173 {
 174         int ret, prime_fd;
 175         struct drm_mtk_gem_map_off gem_map;
 176         struct mediatek_private_map_data *priv;
 177
 178         memset(&gem_map, 0, sizeof(gem_map));
 179         gem_map.handle = bo->handles[0].u32;
 180
 181         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MTK_GEM_MAP_OFFSET, &gem_map);
 182         if (ret) {
 183                 drv_log("DRM_IOCTL_MTK_GEM_MAP_OFFSET failed\n");
 184                 return MAP_FAILED;
 185         }
 186
 187         prime_fd = drv_bo_get_plane_fd(bo, 0);
 188         if (prime_fd < 0) {
 189                 drv_log("Failed to get a prime fd\n");
 190                 return MAP_FAILED;
 191         }
 192
 193         void *addr = mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 194                           gem_map.offset);
 195
 196         vma->length = bo->meta.total_size;
 197
 198         priv = calloc(1, sizeof(*priv));
 199         priv->prime_fd = prime_fd;
 200         vma->priv = priv;
 201
 202         if (bo->meta.use_flags & BO_USE_RENDERSCRIPT) {
 203                 priv->cached_addr = calloc(1, bo->meta.total_size);
 204                 priv->gem_addr = addr;
 205                 addr = priv->cached_addr;
 206         }
 207
 208         return addr;
 209 }
 210
 211 static int mediatek_bo_unmap(struct bo *bo, struct vma *vma)
 212 {
 213         if (vma->priv) {
 214                 struct mediatek_private_map_data *priv = vma->priv;
 215
 216                 if (priv->cached_addr) {
 217                         vma->addr = priv->gem_addr;
 218                         free(priv->cached_addr);
 219                 }
 220
 221                 close(priv->prime_fd);
 222                 free(priv);
 223                 vma->priv = NULL;
 224         }
 225
 226         return munmap(vma->addr, vma->length);
 227 }
 228
 229 static int mediatek_bo_invalidate(struct bo *bo, struct mapping *mapping)
 230 {
 231         struct mediatek_private_map_data *priv = mapping->vma->priv;
 232
 233         if (priv) {
 234                 struct pollfd fds = {
 235                         .fd = priv->prime_fd,
 236                 };
 237
 238                 if (mapping->vma->map_flags & BO_MAP_WRITE)
 239                         fds.events |= POLLOUT;
 240
 241                 if (mapping->vma->map_flags & BO_MAP_READ)
 242                         fds.events |= POLLIN;
 243
 244                 poll(&fds, 1, -1);
 245                 if (fds.revents != fds.events)
 246                         drv_log("poll prime_fd failed\n");
 247
 248                 if (priv->cached_addr)
 249                         memcpy(priv->cached_addr, priv->gem_addr, bo->meta.total_size);
 250         }
 251
 252         return 0;
 253 }
 254
 255 static int mediatek_bo_flush(struct bo *bo, struct mapping *mapping)
 256 {
 257         struct mediatek_private_map_data *priv = mapping->vma->priv;
 258         if (priv && priv->cached_addr && (mapping->vma->map_flags & BO_MAP_WRITE))
 259                 memcpy(priv->gem_addr, priv->cached_addr, bo->meta.total_size);
 260
 261         return 0;
 262 }
 263
 264 static uint32_t mediatek_resolve_format(struct driver *drv, uint32_t format, uint64_t use_flags)
 265 {
 266         switch (format) {
 267         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 268 #ifdef MTK_MT8183
 269                 /* Only MT8183 Camera subsystem offers private reprocessing
 270                  * capability. CAMERA_READ indicates the buffer is intended for
 271                  * reprocessing and hence given the private format for MTK. */
 272                 if (use_flags & BO_USE_CAMERA_READ)
 273                         return DRM_FORMAT_MTISP_SXYZW10;
 274 #endif
 275                 if (use_flags & BO_USE_CAMERA_WRITE)
 276                         return DRM_FORMAT_NV12;
 277
 278                 /*HACK: See b/28671744 */
 279                 return DRM_FORMAT_XBGR8888;
 280         case DRM_FORMAT_FLEX_YCbCr_420_888:
 281 #ifdef MTK_MT8183
 282                 // TODO(hiroh): Switch to use NV12 for video decoder on MT8173 as well.
 283                 if (use_flags & (BO_USE_HW_VIDEO_DECODER)) {
 284                         return DRM_FORMAT_NV12;
 285                 }
 286 #endif
 287                 if (use_flags &
 288                     (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_ENCODER)) {
 289                         return DRM_FORMAT_NV12;
 290                 }
 291                 return DRM_FORMAT_YVU420;
 292         default:
 293                 return format;
 294         }
 295 }
 296
 297 const struct backend backend_mediatek = {
 298         .name = "mediatek",
 299         .init = mediatek_init,
 300         .bo_create = mediatek_bo_create,
 301         .bo_create_with_modifiers = mediatek_bo_create_with_modifiers,
 302         .bo_destroy = drv_gem_bo_destroy,
 303         .bo_import = drv_prime_bo_import,
 304         .bo_map = mediatek_bo_map,
 305         .bo_unmap = mediatek_bo_unmap,
 306         .bo_invalidate = mediatek_bo_invalidate,
 307         .bo_flush = mediatek_bo_flush,
 308         .resolve_format = mediatek_resolve_format,
 309 };
 310
 311 #endif