Satyajit | cdcebd8 | 2018-01-12 14:49:05 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Advanced Micro Devices. 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_AMDGPU |
| 8 | |
| 9 | #include <assert.h> |
| 10 | #include <dlfcn.h> |
| 11 | #include <errno.h> |
| 12 | #include <stdbool.h> |
| 13 | #include <stdio.h> |
| 14 | #include <string.h> |
| 15 | #include <sys/mman.h> |
| 16 | #include <unistd.h> |
| 17 | #include <xf86drm.h> |
| 18 | |
| 19 | #include "dri.h" |
| 20 | #include "drv_priv.h" |
| 21 | #include "helpers.h" |
| 22 | #include "util.h" |
| 23 | |
| 24 | static const struct { |
| 25 | uint32_t drm_format; |
| 26 | int dri_image_format; |
| 27 | } drm_to_dri_image_formats[] = { |
| 28 | { DRM_FORMAT_R8, __DRI_IMAGE_FORMAT_R8 }, |
| 29 | { DRM_FORMAT_GR88, __DRI_IMAGE_FORMAT_GR88 }, |
| 30 | { DRM_FORMAT_RGB565, __DRI_IMAGE_FORMAT_RGB565 }, |
| 31 | { DRM_FORMAT_XRGB8888, __DRI_IMAGE_FORMAT_XRGB8888 }, |
| 32 | { DRM_FORMAT_ARGB8888, __DRI_IMAGE_FORMAT_ARGB8888 }, |
| 33 | { DRM_FORMAT_XBGR8888, __DRI_IMAGE_FORMAT_XBGR8888 }, |
| 34 | { DRM_FORMAT_ABGR8888, __DRI_IMAGE_FORMAT_ABGR8888 }, |
| 35 | { DRM_FORMAT_XRGB2101010, __DRI_IMAGE_FORMAT_XRGB2101010 }, |
| 36 | { DRM_FORMAT_ARGB2101010, __DRI_IMAGE_FORMAT_ARGB2101010 }, |
| 37 | }; |
| 38 | |
| 39 | static int drm_format_to_dri_format(uint32_t drm_format) |
| 40 | { |
| 41 | uint32_t i; |
| 42 | for (i = 0; i < ARRAY_SIZE(drm_to_dri_image_formats); i++) { |
| 43 | if (drm_to_dri_image_formats[i].drm_format == drm_format) |
| 44 | return drm_to_dri_image_formats[i].dri_image_format; |
| 45 | } |
| 46 | |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | static bool lookup_extension(const __DRIextension *const *extensions, const char *name, |
| 51 | int min_version, const __DRIextension **dst) |
| 52 | { |
| 53 | while (*extensions) { |
| 54 | if ((*extensions)->name && !strcmp((*extensions)->name, name) && |
| 55 | (*extensions)->version >= min_version) { |
| 56 | *dst = *extensions; |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | extensions++; |
| 61 | } |
| 62 | |
| 63 | return false; |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * The DRI GEM namespace may be different from the minigbm's driver GEM namespace. We have |
| 68 | * to import into minigbm. |
| 69 | */ |
| 70 | static int import_into_minigbm(struct dri_driver *dri, struct bo *bo) |
| 71 | { |
| 72 | uint32_t handle; |
| 73 | int prime_fd, ret; |
| 74 | |
| 75 | if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_FD, &prime_fd)) |
| 76 | return -errno; |
| 77 | |
| 78 | ret = drmPrimeFDToHandle(bo->drv->fd, prime_fd, &handle); |
| 79 | if (ret) { |
| 80 | drv_log("drmPrimeFDToHandle failed with %s\n", strerror(errno)); |
| 81 | return ret; |
| 82 | } |
| 83 | |
| 84 | bo->handles[0].u32 = handle; |
| 85 | close(prime_fd); |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | /* |
| 90 | * The caller is responsible for setting drv->priv to a structure that derives from dri_driver. |
| 91 | */ |
| 92 | int dri_init(struct driver *drv, const char *dri_so_path, const char *driver_suffix) |
| 93 | { |
| 94 | char fname[128]; |
| 95 | const __DRIextension **(*get_extensions)(); |
| 96 | const __DRIextension *loader_extensions[] = { NULL }; |
| 97 | |
| 98 | struct dri_driver *dri = drv->priv; |
| 99 | dri->driver_handle = dlopen(dri_so_path, RTLD_NOW | RTLD_GLOBAL); |
| 100 | if (!dri->driver_handle) |
| 101 | return -ENODEV; |
| 102 | |
| 103 | snprintf(fname, sizeof(fname), __DRI_DRIVER_GET_EXTENSIONS "_%s", driver_suffix); |
| 104 | get_extensions = dlsym(dri->driver_handle, fname); |
| 105 | if (!get_extensions) |
| 106 | goto free_handle; |
| 107 | |
| 108 | dri->extensions = get_extensions(); |
| 109 | if (!dri->extensions) |
| 110 | goto free_handle; |
| 111 | |
| 112 | if (!lookup_extension(dri->extensions, __DRI_CORE, 2, |
| 113 | (const __DRIextension **)&dri->core_extension)) |
| 114 | goto free_handle; |
| 115 | |
| 116 | /* Version 4 for createNewScreen2 */ |
| 117 | if (!lookup_extension(dri->extensions, __DRI_DRI2, 4, |
| 118 | (const __DRIextension **)&dri->dri2_extension)) |
| 119 | goto free_handle; |
| 120 | |
| 121 | dri->device = dri->dri2_extension->createNewScreen2(0, drv_get_fd(drv), loader_extensions, |
| 122 | dri->extensions, &dri->configs, NULL); |
| 123 | if (!dri->device) |
| 124 | goto free_handle; |
| 125 | |
| 126 | dri->context = |
| 127 | dri->dri2_extension->createNewContext(dri->device, *dri->configs, NULL, NULL); |
| 128 | |
| 129 | if (!dri->context) |
| 130 | goto free_screen; |
| 131 | |
| 132 | if (!lookup_extension(dri->core_extension->getExtensions(dri->device), __DRI_IMAGE, 12, |
| 133 | (const __DRIextension **)&dri->image_extension)) |
| 134 | goto free_context; |
| 135 | |
| 136 | if (!lookup_extension(dri->core_extension->getExtensions(dri->device), __DRI2_FLUSH, 4, |
| 137 | (const __DRIextension **)&dri->flush_extension)) |
| 138 | goto free_context; |
| 139 | |
| 140 | return 0; |
| 141 | |
| 142 | free_context: |
| 143 | dri->core_extension->destroyContext(dri->context); |
| 144 | free_screen: |
| 145 | dri->core_extension->destroyScreen(dri->device); |
| 146 | free_handle: |
| 147 | dlclose(dri->driver_handle); |
| 148 | dri->driver_handle = NULL; |
| 149 | return -ENODEV; |
| 150 | } |
| 151 | |
| 152 | /* |
| 153 | * The caller is responsible for freeing drv->priv. |
| 154 | */ |
| 155 | void dri_close(struct driver *drv) |
| 156 | { |
| 157 | struct dri_driver *dri = drv->priv; |
| 158 | |
| 159 | dri->core_extension->destroyContext(dri->context); |
| 160 | dri->core_extension->destroyScreen(dri->device); |
| 161 | dlclose(dri->driver_handle); |
| 162 | dri->driver_handle = NULL; |
| 163 | } |
| 164 | |
| 165 | int dri_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, |
| 166 | uint64_t use_flags) |
| 167 | { |
| 168 | unsigned int dri_use; |
| 169 | int ret, dri_format, stride, offset; |
| 170 | struct dri_driver *dri = bo->drv->priv; |
| 171 | |
| 172 | assert(bo->num_planes == 1); |
| 173 | dri_format = drm_format_to_dri_format(format); |
| 174 | |
| 175 | /* Gallium drivers require shared to get the handle and stride. */ |
| 176 | dri_use = __DRI_IMAGE_USE_SHARE; |
| 177 | if (use_flags & BO_USE_SCANOUT) |
| 178 | dri_use |= __DRI_IMAGE_USE_SCANOUT; |
| 179 | if (use_flags & BO_USE_CURSOR) |
| 180 | dri_use |= __DRI_IMAGE_USE_CURSOR; |
Satyajit Sahu | a0e602b | 2018-05-03 16:10:11 +0530 | [diff] [blame] | 181 | if (use_flags & BO_USE_LINEAR) |
Satyajit | cdcebd8 | 2018-01-12 14:49:05 +0530 | [diff] [blame] | 182 | dri_use |= __DRI_IMAGE_USE_LINEAR; |
| 183 | |
| 184 | bo->priv = dri->image_extension->createImage(dri->device, width, height, dri_format, |
| 185 | dri_use, NULL); |
| 186 | if (!bo->priv) { |
| 187 | ret = -errno; |
| 188 | return ret; |
| 189 | } |
| 190 | |
| 191 | ret = import_into_minigbm(dri, bo); |
| 192 | if (ret) |
| 193 | goto free_image; |
| 194 | |
| 195 | if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_STRIDE, &stride)) { |
| 196 | ret = -errno; |
| 197 | goto free_image; |
| 198 | } |
| 199 | |
| 200 | if (!dri->image_extension->queryImage(bo->priv, __DRI_IMAGE_ATTRIB_OFFSET, &offset)) { |
| 201 | ret = -errno; |
| 202 | goto free_image; |
| 203 | } |
| 204 | |
| 205 | bo->strides[0] = stride; |
| 206 | bo->sizes[0] = stride * height; |
| 207 | bo->offsets[0] = offset; |
| 208 | bo->total_size = offset + bo->sizes[0]; |
| 209 | return 0; |
| 210 | |
| 211 | free_image: |
| 212 | dri->image_extension->destroyImage(bo->priv); |
| 213 | return ret; |
| 214 | } |
| 215 | |
| 216 | int dri_bo_import(struct bo *bo, struct drv_import_fd_data *data) |
| 217 | { |
| 218 | int ret; |
| 219 | struct dri_driver *dri = bo->drv->priv; |
| 220 | |
| 221 | assert(bo->num_planes == 1); |
| 222 | |
| 223 | // clang-format off |
| 224 | bo->priv = dri->image_extension->createImageFromFds(dri->device, data->width, data->height, |
| 225 | data->format, data->fds, bo->num_planes, |
| 226 | (int *)data->strides, |
| 227 | (int *)data->offsets, NULL); |
| 228 | // clang-format on |
| 229 | if (!bo->priv) |
| 230 | return -errno; |
| 231 | |
| 232 | ret = import_into_minigbm(dri, bo); |
| 233 | if (ret) { |
| 234 | dri->image_extension->destroyImage(bo->priv); |
| 235 | return ret; |
| 236 | } |
| 237 | |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | int dri_bo_destroy(struct bo *bo) |
| 242 | { |
| 243 | struct dri_driver *dri = bo->drv->priv; |
| 244 | |
| 245 | assert(bo->priv); |
| 246 | dri->image_extension->destroyImage(bo->priv); |
| 247 | bo->priv = NULL; |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | /* |
| 252 | * Map an image plane. |
| 253 | * |
| 254 | * This relies on the underlying driver to do a decompressing and/or de-tiling |
| 255 | * blit if necessary, |
| 256 | * |
| 257 | * This function itself is not thread-safe; we rely on the fact that the caller |
| 258 | * locks a per-driver mutex. |
| 259 | */ |
| 260 | void *dri_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags) |
| 261 | { |
| 262 | struct dri_driver *dri = bo->drv->priv; |
Satyajit | cdcebd8 | 2018-01-12 14:49:05 +0530 | [diff] [blame] | 263 | |
| 264 | /* GBM flags and DRI flags are the same. */ |
Satyajit Sahu | 77b7055 | 2018-05-03 16:35:24 +0530 | [diff] [blame^] | 265 | vma->addr = |
| 266 | dri->image_extension->mapImage(dri->context, bo->priv, 0, 0, bo->width, bo->height, |
| 267 | map_flags, (int *)&vma->map_strides[plane], &vma->priv); |
Satyajit | cdcebd8 | 2018-01-12 14:49:05 +0530 | [diff] [blame] | 268 | if (!vma->addr) |
| 269 | return MAP_FAILED; |
| 270 | |
| 271 | return vma->addr; |
| 272 | } |
| 273 | |
| 274 | int dri_bo_unmap(struct bo *bo, struct vma *vma) |
| 275 | { |
| 276 | struct dri_driver *dri = bo->drv->priv; |
| 277 | |
| 278 | assert(vma->priv); |
| 279 | dri->image_extension->unmapImage(dri->context, bo->priv, vma->priv); |
| 280 | |
| 281 | /* |
| 282 | * From gbm_dri.c in Mesa: |
| 283 | * |
| 284 | * "Not all DRI drivers use direct maps. They may queue up DMA operations |
| 285 | * on the mapping context. Since there is no explicit gbm flush mechanism, |
| 286 | * we need to flush here." |
| 287 | */ |
| 288 | |
| 289 | dri->flush_extension->flush_with_flags(dri->context, NULL, __DRI2_FLUSH_CONTEXT, 0); |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | #endif |