Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008-2011 Kristian Høgsberg |
| 3 | * Copyright © 2011 Intel Corporation |
| 4 | * Copyright © 2017, 2018 Collabora, Ltd. |
| 5 | * Copyright © 2017, 2018 General Electric Company |
| 6 | * Copyright (c) 2018 DisplayLink (UK) Ltd. |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining |
| 9 | * a copy of this software and associated documentation files (the |
| 10 | * "Software"), to deal in the Software without restriction, including |
| 11 | * without limitation the rights to use, copy, modify, merge, publish, |
| 12 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 13 | * permit persons to whom the Software is furnished to do so, subject to |
| 14 | * the following conditions: |
| 15 | * |
| 16 | * The above copyright notice and this permission notice (including the |
| 17 | * next paragraph) shall be included in all copies or substantial |
| 18 | * portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 21 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 22 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 23 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 24 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 25 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 26 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 27 | * SOFTWARE. |
| 28 | */ |
| 29 | |
| 30 | #include "config.h" |
| 31 | |
| 32 | #include <stdint.h> |
| 33 | |
| 34 | #include <xf86drm.h> |
| 35 | #include <xf86drmMode.h> |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 36 | |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 37 | #include <libweston/libweston.h> |
| 38 | #include <libweston/backend-drm.h> |
| 39 | #include <libweston/pixel-formats.h> |
| 40 | #include <libweston/linux-dmabuf.h> |
| 41 | #include "shared/helpers.h" |
Pekka Paalanen | 4b301fe | 2021-02-04 17:39:45 +0200 | [diff] [blame] | 42 | #include "shared/weston-drm-fourcc.h" |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 43 | #include "drm-internal.h" |
| 44 | #include "linux-dmabuf.h" |
| 45 | |
| 46 | static void |
| 47 | drm_fb_destroy(struct drm_fb *fb) |
| 48 | { |
| 49 | if (fb->fb_id != 0) |
| 50 | drmModeRmFB(fb->fd, fb->fb_id); |
| 51 | weston_buffer_reference(&fb->buffer_ref, NULL); |
| 52 | weston_buffer_release_reference(&fb->buffer_release_ref, NULL); |
| 53 | free(fb); |
| 54 | } |
| 55 | |
| 56 | static void |
| 57 | drm_fb_destroy_dumb(struct drm_fb *fb) |
| 58 | { |
| 59 | struct drm_mode_destroy_dumb destroy_arg; |
| 60 | |
| 61 | assert(fb->type == BUFFER_PIXMAN_DUMB); |
| 62 | |
| 63 | if (fb->map && fb->size > 0) |
| 64 | munmap(fb->map, fb->size); |
| 65 | |
| 66 | memset(&destroy_arg, 0, sizeof(destroy_arg)); |
| 67 | destroy_arg.handle = fb->handles[0]; |
| 68 | drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg); |
| 69 | |
| 70 | drm_fb_destroy(fb); |
| 71 | } |
| 72 | |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 73 | static int |
| 74 | drm_fb_addfb(struct drm_backend *b, struct drm_fb *fb) |
| 75 | { |
| 76 | int ret = -EINVAL; |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 77 | uint64_t mods[4] = { }; |
| 78 | size_t i; |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 79 | |
| 80 | /* If we have a modifier set, we must only use the WithModifiers |
| 81 | * entrypoint; we cannot import it through legacy ioctls. */ |
| 82 | if (b->fb_modifiers && fb->modifier != DRM_FORMAT_MOD_INVALID) { |
| 83 | /* KMS demands that if a modifier is set, it must be the same |
| 84 | * for all planes. */ |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 85 | for (i = 0; i < ARRAY_LENGTH(mods) && fb->handles[i]; i++) |
| 86 | mods[i] = fb->modifier; |
| 87 | ret = drmModeAddFB2WithModifiers(fb->fd, fb->width, fb->height, |
| 88 | fb->format->format, |
| 89 | fb->handles, fb->strides, |
| 90 | fb->offsets, mods, &fb->fb_id, |
| 91 | DRM_MODE_FB_MODIFIERS); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 92 | return ret; |
| 93 | } |
| 94 | |
| 95 | ret = drmModeAddFB2(fb->fd, fb->width, fb->height, fb->format->format, |
| 96 | fb->handles, fb->strides, fb->offsets, &fb->fb_id, |
| 97 | 0); |
| 98 | if (ret == 0) |
| 99 | return 0; |
| 100 | |
| 101 | /* Legacy AddFB can't always infer the format from depth/bpp alone, so |
| 102 | * check if our format is one of the lucky ones. */ |
| 103 | if (!fb->format->depth || !fb->format->bpp) |
| 104 | return ret; |
| 105 | |
| 106 | /* Cannot fall back to AddFB for multi-planar formats either. */ |
| 107 | if (fb->handles[1] || fb->handles[2] || fb->handles[3]) |
| 108 | return ret; |
| 109 | |
| 110 | ret = drmModeAddFB(fb->fd, fb->width, fb->height, |
| 111 | fb->format->depth, fb->format->bpp, |
| 112 | fb->strides[0], fb->handles[0], &fb->fb_id); |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | struct drm_fb * |
| 117 | drm_fb_create_dumb(struct drm_backend *b, int width, int height, |
| 118 | uint32_t format) |
| 119 | { |
| 120 | struct drm_fb *fb; |
| 121 | int ret; |
| 122 | |
| 123 | struct drm_mode_create_dumb create_arg; |
| 124 | struct drm_mode_destroy_dumb destroy_arg; |
| 125 | struct drm_mode_map_dumb map_arg; |
| 126 | |
| 127 | fb = zalloc(sizeof *fb); |
| 128 | if (!fb) |
| 129 | return NULL; |
| 130 | fb->refcnt = 1; |
| 131 | |
| 132 | fb->format = pixel_format_get_info(format); |
| 133 | if (!fb->format) { |
| 134 | weston_log("failed to look up format 0x%lx\n", |
| 135 | (unsigned long) format); |
| 136 | goto err_fb; |
| 137 | } |
| 138 | |
| 139 | if (!fb->format->depth || !fb->format->bpp) { |
| 140 | weston_log("format 0x%lx is not compatible with dumb buffers\n", |
| 141 | (unsigned long) format); |
| 142 | goto err_fb; |
| 143 | } |
| 144 | |
| 145 | memset(&create_arg, 0, sizeof create_arg); |
| 146 | create_arg.bpp = fb->format->bpp; |
| 147 | create_arg.width = width; |
| 148 | create_arg.height = height; |
| 149 | |
| 150 | ret = drmIoctl(b->drm.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg); |
| 151 | if (ret) |
| 152 | goto err_fb; |
| 153 | |
| 154 | fb->type = BUFFER_PIXMAN_DUMB; |
| 155 | fb->modifier = DRM_FORMAT_MOD_INVALID; |
| 156 | fb->handles[0] = create_arg.handle; |
| 157 | fb->strides[0] = create_arg.pitch; |
| 158 | fb->num_planes = 1; |
| 159 | fb->size = create_arg.size; |
| 160 | fb->width = width; |
| 161 | fb->height = height; |
| 162 | fb->fd = b->drm.fd; |
| 163 | |
| 164 | if (drm_fb_addfb(b, fb) != 0) { |
| 165 | weston_log("failed to create kms fb: %s\n", strerror(errno)); |
| 166 | goto err_bo; |
| 167 | } |
| 168 | |
| 169 | memset(&map_arg, 0, sizeof map_arg); |
| 170 | map_arg.handle = fb->handles[0]; |
| 171 | ret = drmIoctl(fb->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg); |
| 172 | if (ret) |
| 173 | goto err_add_fb; |
| 174 | |
| 175 | fb->map = mmap(NULL, fb->size, PROT_WRITE, |
| 176 | MAP_SHARED, b->drm.fd, map_arg.offset); |
| 177 | if (fb->map == MAP_FAILED) |
| 178 | goto err_add_fb; |
| 179 | |
| 180 | return fb; |
| 181 | |
| 182 | err_add_fb: |
| 183 | drmModeRmFB(b->drm.fd, fb->fb_id); |
| 184 | err_bo: |
| 185 | memset(&destroy_arg, 0, sizeof(destroy_arg)); |
| 186 | destroy_arg.handle = create_arg.handle; |
| 187 | drmIoctl(b->drm.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg); |
| 188 | err_fb: |
| 189 | free(fb); |
| 190 | return NULL; |
| 191 | } |
| 192 | |
| 193 | struct drm_fb * |
| 194 | drm_fb_ref(struct drm_fb *fb) |
| 195 | { |
| 196 | fb->refcnt++; |
| 197 | return fb; |
| 198 | } |
| 199 | |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 200 | #ifdef BUILD_DRM_GBM |
| 201 | static void |
| 202 | drm_fb_destroy_gbm(struct gbm_bo *bo, void *data) |
| 203 | { |
| 204 | struct drm_fb *fb = data; |
| 205 | |
| 206 | assert(fb->type == BUFFER_GBM_SURFACE || fb->type == BUFFER_CLIENT || |
| 207 | fb->type == BUFFER_CURSOR); |
| 208 | drm_fb_destroy(fb); |
| 209 | } |
| 210 | |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 211 | static void |
| 212 | drm_fb_destroy_dmabuf(struct drm_fb *fb) |
| 213 | { |
| 214 | /* We deliberately do not close the GEM handles here; GBM manages |
| 215 | * their lifetime through the BO. */ |
| 216 | if (fb->bo) |
| 217 | gbm_bo_destroy(fb->bo); |
| 218 | drm_fb_destroy(fb); |
| 219 | } |
| 220 | |
| 221 | static struct drm_fb * |
| 222 | drm_fb_get_from_dmabuf(struct linux_dmabuf_buffer *dmabuf, |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 223 | struct drm_backend *backend, bool is_opaque, |
| 224 | uint32_t *try_view_on_plane_failure_reasons) |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 225 | { |
Leandro Ribeiro | 5aea1bc | 2021-04-21 10:38:58 -0300 | [diff] [blame] | 226 | #ifndef HAVE_GBM_FD_IMPORT |
| 227 | /* Importing a buffer to KMS requires explicit modifiers, so |
| 228 | * we can't continue with the legacy GBM_BO_IMPORT_FD instead |
| 229 | * of GBM_BO_IMPORT_FD_MODIFIER. */ |
| 230 | return NULL; |
| 231 | #else |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 232 | struct drm_fb *fb; |
Leandro Ribeiro | 5aea1bc | 2021-04-21 10:38:58 -0300 | [diff] [blame] | 233 | int i; |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 234 | struct gbm_import_fd_modifier_data import_mod = { |
| 235 | .width = dmabuf->attributes.width, |
| 236 | .height = dmabuf->attributes.height, |
| 237 | .format = dmabuf->attributes.format, |
| 238 | .num_fds = dmabuf->attributes.n_planes, |
| 239 | .modifier = dmabuf->attributes.modifier[0], |
| 240 | }; |
Nicholas Niro | 7aab746 | 2019-10-29 22:13:09 -0400 | [diff] [blame] | 241 | |
Emmanuel Gil Peyrot | eff793a | 2021-07-31 17:25:41 +0200 | [diff] [blame] | 242 | /* We should not import to KMS a buffer that has been allocated using no |
| 243 | * modifiers. Usually drivers use linear layouts to allocate with no |
| 244 | * modifiers, but this is not a rule. The driver could use, for |
| 245 | * instance, a tiling layout under the hood - and both Weston and the |
| 246 | * KMS driver can't know. So giving the buffer to KMS is not safe, as |
| 247 | * not knowing its layout can result in garbage being displayed. In |
| 248 | * short, importing a buffer to KMS requires explicit modifiers. */ |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 249 | if (dmabuf->attributes.modifier[0] == DRM_FORMAT_MOD_INVALID) { |
| 250 | if (try_view_on_plane_failure_reasons) |
| 251 | *try_view_on_plane_failure_reasons |= |
| 252 | FAILURE_REASONS_DMABUF_MODIFIER_INVALID; |
Leandro Ribeiro | 5aea1bc | 2021-04-21 10:38:58 -0300 | [diff] [blame] | 253 | return NULL; |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 254 | } |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 255 | |
| 256 | /* XXX: TODO: |
| 257 | * |
| 258 | * Currently the buffer is rejected if any dmabuf attribute |
| 259 | * flag is set. This keeps us from passing an inverted / |
| 260 | * interlaced / bottom-first buffer (or any other type that may |
| 261 | * be added in the future) through to an overlay. Ultimately, |
| 262 | * these types of buffers should be handled through buffer |
| 263 | * transforms and not as spot-checks requiring specific |
| 264 | * knowledge. */ |
| 265 | if (dmabuf->attributes.flags) |
| 266 | return NULL; |
| 267 | |
| 268 | fb = zalloc(sizeof *fb); |
| 269 | if (fb == NULL) |
| 270 | return NULL; |
| 271 | |
| 272 | fb->refcnt = 1; |
| 273 | fb->type = BUFFER_DMABUF; |
| 274 | |
Leandro Ribeiro | 3193ab5 | 2021-04-27 19:00:34 -0300 | [diff] [blame] | 275 | ARRAY_COPY(import_mod.fds, dmabuf->attributes.fd); |
| 276 | ARRAY_COPY(import_mod.strides, dmabuf->attributes.stride); |
| 277 | ARRAY_COPY(import_mod.offsets, dmabuf->attributes.offset); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 278 | |
Leandro Ribeiro | 5aea1bc | 2021-04-21 10:38:58 -0300 | [diff] [blame] | 279 | fb->bo = gbm_bo_import(backend->gbm, GBM_BO_IMPORT_FD_MODIFIER, |
| 280 | &import_mod, GBM_BO_USE_SCANOUT); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 281 | if (!fb->bo) |
| 282 | goto err_free; |
| 283 | |
| 284 | fb->width = dmabuf->attributes.width; |
| 285 | fb->height = dmabuf->attributes.height; |
| 286 | fb->modifier = dmabuf->attributes.modifier[0]; |
| 287 | fb->size = 0; |
| 288 | fb->fd = backend->drm.fd; |
| 289 | |
Leandro Ribeiro | 3193ab5 | 2021-04-27 19:00:34 -0300 | [diff] [blame] | 290 | ARRAY_COPY(fb->strides, dmabuf->attributes.stride); |
| 291 | ARRAY_COPY(fb->offsets, dmabuf->attributes.offset); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 292 | |
| 293 | fb->format = pixel_format_get_info(dmabuf->attributes.format); |
| 294 | if (!fb->format) { |
| 295 | weston_log("couldn't look up format info for 0x%lx\n", |
| 296 | (unsigned long) dmabuf->attributes.format); |
| 297 | goto err_free; |
| 298 | } |
| 299 | |
| 300 | if (is_opaque) |
| 301 | fb->format = pixel_format_get_opaque_substitute(fb->format); |
| 302 | |
| 303 | if (backend->min_width > fb->width || |
| 304 | fb->width > backend->max_width || |
| 305 | backend->min_height > fb->height || |
| 306 | fb->height > backend->max_height) { |
| 307 | weston_log("bo geometry out of bounds\n"); |
| 308 | goto err_free; |
| 309 | } |
| 310 | |
| 311 | fb->num_planes = dmabuf->attributes.n_planes; |
| 312 | for (i = 0; i < dmabuf->attributes.n_planes; i++) { |
| 313 | union gbm_bo_handle handle; |
| 314 | |
| 315 | handle = gbm_bo_get_handle_for_plane(fb->bo, i); |
| 316 | if (handle.s32 == -1) |
| 317 | goto err_free; |
| 318 | fb->handles[i] = handle.u32; |
| 319 | } |
| 320 | |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 321 | if (drm_fb_addfb(backend, fb) != 0) { |
| 322 | if (try_view_on_plane_failure_reasons) |
| 323 | *try_view_on_plane_failure_reasons |= |
| 324 | FAILURE_REASONS_ADD_FB_FAILED; |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 325 | goto err_free; |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 326 | } |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 327 | |
| 328 | return fb; |
| 329 | |
| 330 | err_free: |
| 331 | drm_fb_destroy_dmabuf(fb); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 332 | return NULL; |
Leandro Ribeiro | 5aea1bc | 2021-04-21 10:38:58 -0300 | [diff] [blame] | 333 | #endif |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | struct drm_fb * |
| 337 | drm_fb_get_from_bo(struct gbm_bo *bo, struct drm_backend *backend, |
| 338 | bool is_opaque, enum drm_fb_type type) |
| 339 | { |
| 340 | struct drm_fb *fb = gbm_bo_get_user_data(bo); |
| 341 | #ifdef HAVE_GBM_MODIFIERS |
| 342 | int i; |
| 343 | #endif |
| 344 | |
| 345 | if (fb) { |
| 346 | assert(fb->type == type); |
| 347 | return drm_fb_ref(fb); |
| 348 | } |
| 349 | |
| 350 | fb = zalloc(sizeof *fb); |
| 351 | if (fb == NULL) |
| 352 | return NULL; |
| 353 | |
| 354 | fb->type = type; |
| 355 | fb->refcnt = 1; |
| 356 | fb->bo = bo; |
| 357 | fb->fd = backend->drm.fd; |
| 358 | |
| 359 | fb->width = gbm_bo_get_width(bo); |
| 360 | fb->height = gbm_bo_get_height(bo); |
| 361 | fb->format = pixel_format_get_info(gbm_bo_get_format(bo)); |
| 362 | fb->size = 0; |
| 363 | |
| 364 | #ifdef HAVE_GBM_MODIFIERS |
| 365 | fb->modifier = gbm_bo_get_modifier(bo); |
| 366 | fb->num_planes = gbm_bo_get_plane_count(bo); |
| 367 | for (i = 0; i < fb->num_planes; i++) { |
| 368 | fb->strides[i] = gbm_bo_get_stride_for_plane(bo, i); |
| 369 | fb->handles[i] = gbm_bo_get_handle_for_plane(bo, i).u32; |
| 370 | fb->offsets[i] = gbm_bo_get_offset(bo, i); |
| 371 | } |
| 372 | #else |
| 373 | fb->num_planes = 1; |
| 374 | fb->strides[0] = gbm_bo_get_stride(bo); |
| 375 | fb->handles[0] = gbm_bo_get_handle(bo).u32; |
| 376 | fb->modifier = DRM_FORMAT_MOD_INVALID; |
| 377 | #endif |
| 378 | |
| 379 | if (!fb->format) { |
| 380 | weston_log("couldn't look up format 0x%lx\n", |
| 381 | (unsigned long) gbm_bo_get_format(bo)); |
| 382 | goto err_free; |
| 383 | } |
| 384 | |
| 385 | /* We can scanout an ARGB buffer if the surface's opaque region covers |
| 386 | * the whole output, but we have to use XRGB as the KMS format code. */ |
| 387 | if (is_opaque) |
| 388 | fb->format = pixel_format_get_opaque_substitute(fb->format); |
| 389 | |
| 390 | if (backend->min_width > fb->width || |
| 391 | fb->width > backend->max_width || |
| 392 | backend->min_height > fb->height || |
| 393 | fb->height > backend->max_height) { |
| 394 | weston_log("bo geometry out of bounds\n"); |
| 395 | goto err_free; |
| 396 | } |
| 397 | |
| 398 | if (drm_fb_addfb(backend, fb) != 0) { |
| 399 | if (type == BUFFER_GBM_SURFACE) |
| 400 | weston_log("failed to create kms fb: %s\n", |
| 401 | strerror(errno)); |
| 402 | goto err_free; |
| 403 | } |
| 404 | |
| 405 | gbm_bo_set_user_data(bo, fb, drm_fb_destroy_gbm); |
| 406 | |
| 407 | return fb; |
| 408 | |
| 409 | err_free: |
| 410 | free(fb); |
| 411 | return NULL; |
| 412 | } |
| 413 | |
| 414 | static void |
| 415 | drm_fb_set_buffer(struct drm_fb *fb, struct weston_buffer *buffer, |
| 416 | struct weston_buffer_release *buffer_release) |
| 417 | { |
| 418 | assert(fb->buffer_ref.buffer == NULL); |
| 419 | assert(fb->type == BUFFER_CLIENT || fb->type == BUFFER_DMABUF); |
| 420 | weston_buffer_reference(&fb->buffer_ref, buffer); |
| 421 | weston_buffer_release_reference(&fb->buffer_release_ref, |
| 422 | buffer_release); |
| 423 | } |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 424 | #endif |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 425 | |
| 426 | void |
| 427 | drm_fb_unref(struct drm_fb *fb) |
| 428 | { |
| 429 | if (!fb) |
| 430 | return; |
| 431 | |
| 432 | assert(fb->refcnt > 0); |
| 433 | if (--fb->refcnt > 0) |
| 434 | return; |
| 435 | |
| 436 | switch (fb->type) { |
| 437 | case BUFFER_PIXMAN_DUMB: |
| 438 | drm_fb_destroy_dumb(fb); |
| 439 | break; |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 440 | #ifdef BUILD_DRM_GBM |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 441 | case BUFFER_CURSOR: |
| 442 | case BUFFER_CLIENT: |
| 443 | gbm_bo_destroy(fb->bo); |
| 444 | break; |
| 445 | case BUFFER_GBM_SURFACE: |
| 446 | gbm_surface_release_buffer(fb->gbm_surface, fb->bo); |
| 447 | break; |
| 448 | case BUFFER_DMABUF: |
| 449 | drm_fb_destroy_dmabuf(fb); |
| 450 | break; |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 451 | #endif |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 452 | default: |
| 453 | assert(NULL); |
| 454 | break; |
| 455 | } |
| 456 | } |
| 457 | |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 458 | #ifdef BUILD_DRM_GBM |
Marius Vlad | 81bada5 | 2019-11-11 00:27:17 +0200 | [diff] [blame] | 459 | bool |
| 460 | drm_can_scanout_dmabuf(struct weston_compositor *ec, |
| 461 | struct linux_dmabuf_buffer *dmabuf) |
| 462 | { |
| 463 | struct drm_fb *fb; |
| 464 | struct drm_backend *b = to_drm_backend(ec); |
| 465 | bool ret = false; |
| 466 | |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 467 | fb = drm_fb_get_from_dmabuf(dmabuf, b, true, NULL); |
Marius Vlad | 81bada5 | 2019-11-11 00:27:17 +0200 | [diff] [blame] | 468 | if (fb) |
| 469 | ret = true; |
| 470 | |
| 471 | drm_fb_unref(fb); |
| 472 | drm_debug(b, "[dmabuf] dmabuf %p, import test %s\n", dmabuf, |
| 473 | ret ? "succeeded" : "failed"); |
| 474 | return ret; |
| 475 | } |
| 476 | |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 477 | struct drm_fb * |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 478 | drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev, |
| 479 | uint32_t *try_view_on_plane_failure_reasons) |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 480 | { |
| 481 | struct drm_output *output = state->output; |
| 482 | struct drm_backend *b = to_drm_backend(output->base.compositor); |
| 483 | struct weston_buffer *buffer = ev->surface->buffer_ref.buffer; |
| 484 | bool is_opaque = weston_view_is_opaque(ev, &ev->transform.boundingbox); |
| 485 | struct linux_dmabuf_buffer *dmabuf; |
| 486 | struct drm_fb *fb; |
| 487 | |
| 488 | if (ev->alpha != 1.0f) |
| 489 | return NULL; |
| 490 | |
| 491 | if (!drm_view_transform_supported(ev, &output->base)) |
| 492 | return NULL; |
| 493 | |
Daniel Stone | d32dfcf | 2019-08-19 16:53:40 +0100 | [diff] [blame] | 494 | if (ev->surface->protection_mode == WESTON_SURFACE_PROTECTION_MODE_ENFORCED && |
| 495 | ev->surface->desired_protection > output->base.current_protection) |
| 496 | return NULL; |
| 497 | |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 498 | if (!buffer) |
| 499 | return NULL; |
| 500 | |
| 501 | if (wl_shm_buffer_get(buffer->resource)) |
| 502 | return NULL; |
| 503 | |
| 504 | /* GBM is used for dmabuf import as well as from client wl_buffer. */ |
| 505 | if (!b->gbm) |
| 506 | return NULL; |
| 507 | |
| 508 | dmabuf = linux_dmabuf_buffer_get(buffer->resource); |
| 509 | if (dmabuf) { |
Leandro Ribeiro | 0a7034c | 2021-09-13 14:52:53 -0300 | [diff] [blame^] | 510 | fb = drm_fb_get_from_dmabuf(dmabuf, b, is_opaque, |
| 511 | try_view_on_plane_failure_reasons); |
Daniel Stone | 7580b3c | 2019-06-18 11:16:53 +0100 | [diff] [blame] | 512 | if (!fb) |
| 513 | return NULL; |
| 514 | } else { |
| 515 | struct gbm_bo *bo; |
| 516 | |
| 517 | bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER, |
| 518 | buffer->resource, GBM_BO_USE_SCANOUT); |
| 519 | if (!bo) |
| 520 | return NULL; |
| 521 | |
| 522 | fb = drm_fb_get_from_bo(bo, b, is_opaque, BUFFER_CLIENT); |
| 523 | if (!fb) { |
| 524 | gbm_bo_destroy(bo); |
| 525 | return NULL; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | drm_debug(b, "\t\t\t[view] view %p format: %s\n", |
| 530 | ev, fb->format->drm_format_name); |
| 531 | drm_fb_set_buffer(fb, buffer, |
| 532 | ev->surface->buffer_release_ref.buffer_release); |
| 533 | return fb; |
| 534 | } |
Stefan Agner | ccf2407 | 2019-07-09 22:02:00 +0200 | [diff] [blame] | 535 | #endif |