amdgpu.c

   1 /*
   2  * Copyright 2016 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 #ifdef DRV_AMDGPU
   7 #include <amdgpu.h>
   8 #include <amdgpu_drm.h>
   9 #include <errno.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <sys/mman.h>
  14 #include <xf86drm.h>
  15
  16 #include "dri.h"
  17 #include "drv_priv.h"
  18 #include "helpers.h"
  19 #include "util.h"
  20
  21 #ifdef __ANDROID__
  22 #define DRI_PATH "/vendor/lib/dri/radeonsi_dri.so"
  23 #else
  24 #define DRI_PATH "/usr/lib64/dri/radeonsi_dri.so"
  25 #endif
  26
  27 #define TILE_TYPE_LINEAR 0
  28 /* DRI backend decides tiling in this case. */
  29 #define TILE_TYPE_DRI 1
  30
  31 struct amdgpu_priv {
  32         struct dri_driver dri;
  33         int drm_version;
  34 };
  35
  36 const static uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
  37                                                   DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
  38                                                   DRM_FORMAT_XRGB8888 };
  39
  40 const static uint32_t texture_source_formats[] = { DRM_FORMAT_GR88, DRM_FORMAT_R8, DRM_FORMAT_NV21,
  41                                                    DRM_FORMAT_NV12, DRM_FORMAT_YVU420_ANDROID };
  42
  43 static int amdgpu_init(struct driver *drv)
  44 {
  45         struct amdgpu_priv *priv;
  46         drmVersionPtr drm_version;
  47         struct format_metadata metadata;
  48         uint64_t use_flags = BO_USE_RENDER_MASK;
  49
  50         priv = calloc(1, sizeof(struct amdgpu_priv));
  51         if (!priv)
  52                 return -ENOMEM;
  53
  54         drm_version = drmGetVersion(drv_get_fd(drv));
  55         if (!drm_version) {
  56                 free(priv);
  57                 return -ENODEV;
  58         }
  59
  60         priv->drm_version = drm_version->version_minor;
  61         drmFreeVersion(drm_version);
  62
  63         drv->priv = priv;
  64
  65         if (dri_init(drv, DRI_PATH, "radeonsi")) {
  66                 free(priv);
  67                 drv->priv = NULL;
  68                 return -ENODEV;
  69         }
  70
  71         metadata.tiling = TILE_TYPE_LINEAR;
  72         metadata.priority = 1;
  73         metadata.modifier = DRM_FORMAT_MOD_LINEAR;
  74
  75         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
  76                              &metadata, use_flags);
  77
  78         drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
  79                              &metadata, BO_USE_TEXTURE_MASK);
  80
  81         /* Android CTS tests require this. */
  82         drv_add_combination(drv, DRM_FORMAT_BGR888, &metadata, BO_USE_SW_MASK);
  83
  84         /* Linear formats supported by display. */
  85         drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
  86         drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
  87         drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);
  88
  89         /* YUV formats for camera and display. */
  90         drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
  91                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SCANOUT |
  92                                    BO_USE_HW_VIDEO_DECODER);
  93
  94         drv_modify_combination(drv, DRM_FORMAT_NV21, &metadata, BO_USE_SCANOUT);
  95
  96         /*
  97          * R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
  98          * from camera.
  99          */
 100         drv_modify_combination(drv, DRM_FORMAT_R8, &metadata,
 101                                BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
 102
 103         /*
 104          * The following formats will be allocated by the DRI backend and may be potentially tiled.
 105          * Since format modifier support hasn't been implemented fully yet, it's not
 106          * possible to enumerate the different types of buffers (like i915 can).
 107          */
 108         use_flags &= ~BO_USE_RENDERSCRIPT;
 109         use_flags &= ~BO_USE_SW_WRITE_OFTEN;
 110         use_flags &= ~BO_USE_SW_READ_OFTEN;
 111         use_flags &= ~BO_USE_LINEAR;
 112
 113         metadata.tiling = TILE_TYPE_DRI;
 114         metadata.priority = 2;
 115
 116         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
 117                              &metadata, use_flags);
 118
 119         /* Potentially tiled formats supported by display. */
 120         drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
 121         drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT);
 122         drv_modify_combination(drv, DRM_FORMAT_XBGR8888, &metadata, BO_USE_SCANOUT);
 123         return 0;
 124 }
 125
 126 static void amdgpu_close(struct driver *drv)
 127 {
 128         dri_close(drv);
 129         free(drv->priv);
 130         drv->priv = NULL;
 131 }
 132
 133 static int amdgpu_create_bo(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
 134                             uint64_t use_flags)
 135 {
 136         int ret;
 137         uint32_t plane, stride;
 138         struct combination *combo;
 139         union drm_amdgpu_gem_create gem_create;
 140         struct amdgpu_priv *priv = bo->drv->priv;
 141
 142         combo = drv_get_combination(bo->drv, format, use_flags);
 143         if (!combo)
 144                 return -EINVAL;
 145
 146         /* Currently Gralloc does not handle a different map_stride. So to work around,
 147          * aligning the stride to 256 to make bo_stride same as map_stride. b/115946221.
 148          */
 149 #ifdef __ANDROID__
 150         uint32_t bytes_per_pixel = drv_bytes_per_pixel_from_format(format, 0);
 151         width = ALIGN(width, 256 / bytes_per_pixel);
 152 #endif
 153         if (combo->metadata.tiling == TILE_TYPE_DRI)
 154                 return dri_bo_create(bo, width, height, format, use_flags);
 155
 156         stride = drv_stride_from_format(format, width, 0);
 157         stride = ALIGN(stride, 256);
 158
 159         drv_bo_from_format(bo, stride, height, format);
 160
 161         memset(&gem_create, 0, sizeof(gem_create));
 162         gem_create.in.bo_size = bo->total_size;
 163         gem_create.in.alignment = 256;
 164         gem_create.in.domain_flags = 0;
 165
 166         if (use_flags & (BO_USE_LINEAR | BO_USE_SW_MASK))
 167                 gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
 168
 169         gem_create.in.domains = AMDGPU_GEM_DOMAIN_GTT;
 170         if (!(use_flags & (BO_USE_SW_READ_OFTEN | BO_USE_SCANOUT)))
 171                 gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 172
 173         /* If drm_version >= 21 everything exposes explicit synchronization primitives
 174            and chromeos/arc++ will use them. Disable implicit synchronization. */
 175         if (priv->drm_version >= 21) {
 176                 gem_create.in.domain_flags |= AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
 177         }
 178
 179         /* Allocate the buffer with the preferred heap. */
 180         ret = drmCommandWriteRead(drv_get_fd(bo->drv), DRM_AMDGPU_GEM_CREATE, &gem_create,
 181                                   sizeof(gem_create));
 182         if (ret < 0)
 183                 return ret;
 184
 185         for (plane = 0; plane < bo->num_planes; plane++)
 186                 bo->handles[plane].u32 = gem_create.out.handle;
 187
 188         return 0;
 189 }
 190
 191 static int amdgpu_import_bo(struct bo *bo, struct drv_import_fd_data *data)
 192 {
 193         struct combination *combo;
 194         combo = drv_get_combination(bo->drv, data->format, data->use_flags);
 195         if (!combo)
 196                 return -EINVAL;
 197
 198         if (combo->metadata.tiling == TILE_TYPE_DRI)
 199                 return dri_bo_import(bo, data);
 200         else
 201                 return drv_prime_bo_import(bo, data);
 202 }
 203
 204 static int amdgpu_destroy_bo(struct bo *bo)
 205 {
 206         if (bo->priv)
 207                 return dri_bo_destroy(bo);
 208         else
 209                 return drv_gem_bo_destroy(bo);
 210 }
 211
 212 static void *amdgpu_map_bo(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
 213 {
 214         int ret;
 215         union drm_amdgpu_gem_mmap gem_map;
 216
 217         if (bo->priv)
 218                 return dri_bo_map(bo, vma, plane, map_flags);
 219
 220         memset(&gem_map, 0, sizeof(gem_map));
 221         gem_map.in.handle = bo->handles[plane].u32;
 222
 223         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_AMDGPU_GEM_MMAP, &gem_map);
 224         if (ret) {
 225                 drv_log("DRM_IOCTL_AMDGPU_GEM_MMAP failed\n");
 226                 return MAP_FAILED;
 227         }
 228
 229         vma->length = bo->total_size;
 230
 231         return mmap(0, bo->total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
 232                     gem_map.out.addr_ptr);
 233 }
 234
 235 static int amdgpu_unmap_bo(struct bo *bo, struct vma *vma)
 236 {
 237         if (bo->priv)
 238                 return dri_bo_unmap(bo, vma);
 239         else
 240                 return munmap(vma->addr, vma->length);
 241 }
 242
 243 static uint32_t amdgpu_resolve_format(uint32_t format, uint64_t use_flags)
 244 {
 245         switch (format) {
 246         case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
 247                 /* Camera subsystem requires NV12. */
 248                 if (use_flags & (BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE))
 249                         return DRM_FORMAT_NV12;
 250                 /*HACK: See b/28671744 */
 251                 return DRM_FORMAT_XBGR8888;
 252         case DRM_FORMAT_FLEX_YCbCr_420_888:
 253                 return DRM_FORMAT_NV12;
 254         default:
 255                 return format;
 256         }
 257 }
 258
 259 const struct backend backend_amdgpu = {
 260         .name = "amdgpu",
 261         .init = amdgpu_init,
 262         .close = amdgpu_close,
 263         .bo_create = amdgpu_create_bo,
 264         .bo_destroy = amdgpu_destroy_bo,
 265         .bo_import = amdgpu_import_bo,
 266         .bo_map = amdgpu_map_bo,
 267         .bo_unmap = amdgpu_unmap_bo,
 268         .resolve_format = amdgpu_resolve_format,
 269 };
 270
 271 #endif