Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 Intel Corporation |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 5 | * documentation for any purpose is hereby granted without fee, provided that |
| 6 | * the above copyright notice appear in all copies and that both that copyright |
| 7 | * notice and this permission notice appear in supporting documentation, and |
| 8 | * that the name of the copyright holders not be used in advertising or |
| 9 | * publicity pertaining to distribution of the software without specific, |
| 10 | * written prior permission. The copyright holders make no representations |
| 11 | * about the suitability of this software for any purpose. It is provided "as |
| 12 | * is" without express or implied warranty. |
| 13 | * |
| 14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 20 | * OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <drm/drmP.h> |
| 24 | #include <drm/drm_plane.h> |
| 25 | |
| 26 | #include "drm_crtc_internal.h" |
| 27 | |
Daniel Vetter | 532b367 | 2016-09-21 10:59:25 +0200 | [diff] [blame] | 28 | /** |
| 29 | * DOC: overview |
| 30 | * |
| 31 | * A plane represents an image source that can be blended with or overlayed on |
| 32 | * top of a CRTC during the scanout process. Planes take their input data from a |
| 33 | * &drm_framebuffer object. The plane itself specifies the cropping and scaling |
| 34 | * of that image, and where it is placed on the visible are of a display |
| 35 | * pipeline, represented by &drm_crtc. A plane can also have additional |
| 36 | * properties that specify how the pixels are positioned and blended, like |
| 37 | * rotation or Z-position. All these properties are stored in &drm_plane_state. |
| 38 | * |
| 39 | * To create a plane, a KMS drivers allocates and zeroes an instances of |
| 40 | * struct &drm_plane (possibly as part of a larger structure) and registers it |
| 41 | * with a call to drm_universal_plane_init(). |
| 42 | * |
| 43 | * Cursor and overlay planes are optional. All drivers should provide one |
| 44 | * primary plane per CRTC to avoid surprising userspace too much. See enum |
| 45 | * &drm_plane_type for a more in-depth discussion of these special uapi-relevant |
| 46 | * plane types. Special planes are associated with their CRTC by calling |
| 47 | * drm_crtc_init_with_planes(). |
Daniel Vetter | 1e4d84c | 2016-09-21 10:59:27 +0200 | [diff] [blame] | 48 | * |
| 49 | * The type of a plane is exposed in the immutable "type" enumeration property, |
| 50 | * which has one of the following values: "Overlay", "Primary", "Cursor". |
Daniel Vetter | 532b367 | 2016-09-21 10:59:25 +0200 | [diff] [blame] | 51 | */ |
| 52 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 53 | static unsigned int drm_num_planes(struct drm_device *dev) |
| 54 | { |
| 55 | unsigned int num = 0; |
| 56 | struct drm_plane *tmp; |
| 57 | |
| 58 | drm_for_each_plane(tmp, dev) { |
| 59 | num++; |
| 60 | } |
| 61 | |
| 62 | return num; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * drm_universal_plane_init - Initialize a new universal plane object |
| 67 | * @dev: DRM device |
| 68 | * @plane: plane object to init |
| 69 | * @possible_crtcs: bitmask of possible CRTCs |
| 70 | * @funcs: callbacks for the new plane |
| 71 | * @formats: array of supported formats (DRM_FORMAT\_\*) |
| 72 | * @format_count: number of elements in @formats |
| 73 | * @type: type of plane (overlay, primary, cursor) |
| 74 | * @name: printf style format string for the plane name, or NULL for default name |
| 75 | * |
| 76 | * Initializes a plane object of type @type. |
| 77 | * |
| 78 | * Returns: |
| 79 | * Zero on success, error code on failure. |
| 80 | */ |
| 81 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, |
Tomi Valkeinen | 5cd57a4 | 2016-12-02 15:45:35 +0200 | [diff] [blame] | 82 | uint32_t possible_crtcs, |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 83 | const struct drm_plane_funcs *funcs, |
| 84 | const uint32_t *formats, unsigned int format_count, |
| 85 | enum drm_plane_type type, |
| 86 | const char *name, ...) |
| 87 | { |
| 88 | struct drm_mode_config *config = &dev->mode_config; |
| 89 | int ret; |
| 90 | |
| 91 | ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
| 92 | if (ret) |
| 93 | return ret; |
| 94 | |
| 95 | drm_modeset_lock_init(&plane->mutex); |
| 96 | |
| 97 | plane->base.properties = &plane->properties; |
| 98 | plane->dev = dev; |
| 99 | plane->funcs = funcs; |
| 100 | plane->format_types = kmalloc_array(format_count, sizeof(uint32_t), |
| 101 | GFP_KERNEL); |
| 102 | if (!plane->format_types) { |
| 103 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); |
| 104 | drm_mode_object_unregister(dev, &plane->base); |
| 105 | return -ENOMEM; |
| 106 | } |
| 107 | |
| 108 | if (name) { |
| 109 | va_list ap; |
| 110 | |
| 111 | va_start(ap, name); |
| 112 | plane->name = kvasprintf(GFP_KERNEL, name, ap); |
| 113 | va_end(ap); |
| 114 | } else { |
| 115 | plane->name = kasprintf(GFP_KERNEL, "plane-%d", |
| 116 | drm_num_planes(dev)); |
| 117 | } |
| 118 | if (!plane->name) { |
| 119 | kfree(plane->format_types); |
| 120 | drm_mode_object_unregister(dev, &plane->base); |
| 121 | return -ENOMEM; |
| 122 | } |
| 123 | |
| 124 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); |
| 125 | plane->format_count = format_count; |
| 126 | plane->possible_crtcs = possible_crtcs; |
| 127 | plane->type = type; |
| 128 | |
| 129 | list_add_tail(&plane->head, &config->plane_list); |
| 130 | plane->index = config->num_total_plane++; |
| 131 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
| 132 | config->num_overlay_plane++; |
| 133 | |
| 134 | drm_object_attach_property(&plane->base, |
| 135 | config->plane_type_property, |
| 136 | plane->type); |
| 137 | |
| 138 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
| 139 | drm_object_attach_property(&plane->base, config->prop_fb_id, 0); |
Gustavo Padovan | 9626014 | 2016-11-15 22:06:39 +0900 | [diff] [blame] | 140 | drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1); |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 141 | drm_object_attach_property(&plane->base, config->prop_crtc_id, 0); |
| 142 | drm_object_attach_property(&plane->base, config->prop_crtc_x, 0); |
| 143 | drm_object_attach_property(&plane->base, config->prop_crtc_y, 0); |
| 144 | drm_object_attach_property(&plane->base, config->prop_crtc_w, 0); |
| 145 | drm_object_attach_property(&plane->base, config->prop_crtc_h, 0); |
| 146 | drm_object_attach_property(&plane->base, config->prop_src_x, 0); |
| 147 | drm_object_attach_property(&plane->base, config->prop_src_y, 0); |
| 148 | drm_object_attach_property(&plane->base, config->prop_src_w, 0); |
| 149 | drm_object_attach_property(&plane->base, config->prop_src_h, 0); |
| 150 | } |
| 151 | |
| 152 | return 0; |
| 153 | } |
| 154 | EXPORT_SYMBOL(drm_universal_plane_init); |
| 155 | |
| 156 | int drm_plane_register_all(struct drm_device *dev) |
| 157 | { |
| 158 | struct drm_plane *plane; |
| 159 | int ret = 0; |
| 160 | |
| 161 | drm_for_each_plane(plane, dev) { |
| 162 | if (plane->funcs->late_register) |
| 163 | ret = plane->funcs->late_register(plane); |
| 164 | if (ret) |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | void drm_plane_unregister_all(struct drm_device *dev) |
| 172 | { |
| 173 | struct drm_plane *plane; |
| 174 | |
| 175 | drm_for_each_plane(plane, dev) { |
| 176 | if (plane->funcs->early_unregister) |
| 177 | plane->funcs->early_unregister(plane); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * drm_plane_init - Initialize a legacy plane |
| 183 | * @dev: DRM device |
| 184 | * @plane: plane object to init |
| 185 | * @possible_crtcs: bitmask of possible CRTCs |
| 186 | * @funcs: callbacks for the new plane |
| 187 | * @formats: array of supported formats (DRM_FORMAT\_\*) |
| 188 | * @format_count: number of elements in @formats |
| 189 | * @is_primary: plane type (primary vs overlay) |
| 190 | * |
| 191 | * Legacy API to initialize a DRM plane. |
| 192 | * |
| 193 | * New drivers should call drm_universal_plane_init() instead. |
| 194 | * |
| 195 | * Returns: |
| 196 | * Zero on success, error code on failure. |
| 197 | */ |
| 198 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, |
Tomi Valkeinen | 5cd57a4 | 2016-12-02 15:45:35 +0200 | [diff] [blame] | 199 | uint32_t possible_crtcs, |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 200 | const struct drm_plane_funcs *funcs, |
| 201 | const uint32_t *formats, unsigned int format_count, |
| 202 | bool is_primary) |
| 203 | { |
| 204 | enum drm_plane_type type; |
| 205 | |
| 206 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; |
| 207 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, |
| 208 | formats, format_count, type, NULL); |
| 209 | } |
| 210 | EXPORT_SYMBOL(drm_plane_init); |
| 211 | |
| 212 | /** |
| 213 | * drm_plane_cleanup - Clean up the core plane usage |
| 214 | * @plane: plane to cleanup |
| 215 | * |
| 216 | * This function cleans up @plane and removes it from the DRM mode setting |
| 217 | * core. Note that the function does *not* free the plane structure itself, |
| 218 | * this is the responsibility of the caller. |
| 219 | */ |
| 220 | void drm_plane_cleanup(struct drm_plane *plane) |
| 221 | { |
| 222 | struct drm_device *dev = plane->dev; |
| 223 | |
Daniel Vetter | 661a375 | 2016-11-29 10:45:38 +0100 | [diff] [blame] | 224 | drm_modeset_lock_fini(&plane->mutex); |
| 225 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 226 | kfree(plane->format_types); |
| 227 | drm_mode_object_unregister(dev, &plane->base); |
| 228 | |
| 229 | BUG_ON(list_empty(&plane->head)); |
| 230 | |
| 231 | /* Note that the plane_list is considered to be static; should we |
| 232 | * remove the drm_plane at runtime we would have to decrement all |
| 233 | * the indices on the drm_plane after us in the plane_list. |
| 234 | */ |
| 235 | |
| 236 | list_del(&plane->head); |
| 237 | dev->mode_config.num_total_plane--; |
| 238 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
| 239 | dev->mode_config.num_overlay_plane--; |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 240 | |
| 241 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); |
| 242 | if (plane->state && plane->funcs->atomic_destroy_state) |
| 243 | plane->funcs->atomic_destroy_state(plane, plane->state); |
| 244 | |
| 245 | kfree(plane->name); |
| 246 | |
| 247 | memset(plane, 0, sizeof(*plane)); |
| 248 | } |
| 249 | EXPORT_SYMBOL(drm_plane_cleanup); |
| 250 | |
| 251 | /** |
| 252 | * drm_plane_from_index - find the registered plane at an index |
| 253 | * @dev: DRM device |
| 254 | * @idx: index of registered plane to find for |
| 255 | * |
| 256 | * Given a plane index, return the registered plane from DRM device's |
| 257 | * list of planes with matching index. |
| 258 | */ |
| 259 | struct drm_plane * |
| 260 | drm_plane_from_index(struct drm_device *dev, int idx) |
| 261 | { |
| 262 | struct drm_plane *plane; |
| 263 | |
| 264 | drm_for_each_plane(plane, dev) |
| 265 | if (idx == plane->index) |
| 266 | return plane; |
| 267 | |
| 268 | return NULL; |
| 269 | } |
| 270 | EXPORT_SYMBOL(drm_plane_from_index); |
| 271 | |
| 272 | /** |
| 273 | * drm_plane_force_disable - Forcibly disable a plane |
| 274 | * @plane: plane to disable |
| 275 | * |
| 276 | * Forces the plane to be disabled. |
| 277 | * |
| 278 | * Used when the plane's current framebuffer is destroyed, |
| 279 | * and when restoring fbdev mode. |
| 280 | */ |
| 281 | void drm_plane_force_disable(struct drm_plane *plane) |
| 282 | { |
| 283 | int ret; |
| 284 | |
| 285 | if (!plane->fb) |
| 286 | return; |
| 287 | |
| 288 | plane->old_fb = plane->fb; |
| 289 | ret = plane->funcs->disable_plane(plane); |
| 290 | if (ret) { |
| 291 | DRM_ERROR("failed to disable plane with busy fb\n"); |
| 292 | plane->old_fb = NULL; |
| 293 | return; |
| 294 | } |
| 295 | /* disconnect the plane from the fb and crtc: */ |
| 296 | drm_framebuffer_unreference(plane->old_fb); |
| 297 | plane->old_fb = NULL; |
| 298 | plane->fb = NULL; |
| 299 | plane->crtc = NULL; |
| 300 | } |
| 301 | EXPORT_SYMBOL(drm_plane_force_disable); |
| 302 | |
| 303 | /** |
| 304 | * drm_mode_plane_set_obj_prop - set the value of a property |
| 305 | * @plane: drm plane object to set property value for |
| 306 | * @property: property to set |
| 307 | * @value: value the property should be set to |
| 308 | * |
| 309 | * This functions sets a given property on a given plane object. This function |
| 310 | * calls the driver's ->set_property callback and changes the software state of |
| 311 | * the property if the callback succeeds. |
| 312 | * |
| 313 | * Returns: |
| 314 | * Zero on success, error code on failure. |
| 315 | */ |
| 316 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, |
| 317 | struct drm_property *property, |
| 318 | uint64_t value) |
| 319 | { |
| 320 | int ret = -EINVAL; |
| 321 | struct drm_mode_object *obj = &plane->base; |
| 322 | |
| 323 | if (plane->funcs->set_property) |
| 324 | ret = plane->funcs->set_property(plane, property, value); |
| 325 | if (!ret) |
| 326 | drm_object_property_set_value(obj, property, value); |
| 327 | |
| 328 | return ret; |
| 329 | } |
| 330 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); |
| 331 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 332 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
| 333 | struct drm_file *file_priv) |
| 334 | { |
| 335 | struct drm_mode_get_plane_res *plane_resp = data; |
| 336 | struct drm_mode_config *config; |
| 337 | struct drm_plane *plane; |
| 338 | uint32_t __user *plane_ptr; |
| 339 | int copied = 0; |
| 340 | unsigned num_planes; |
| 341 | |
| 342 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 343 | return -EINVAL; |
| 344 | |
| 345 | config = &dev->mode_config; |
| 346 | |
| 347 | if (file_priv->universal_planes) |
| 348 | num_planes = config->num_total_plane; |
| 349 | else |
| 350 | num_planes = config->num_overlay_plane; |
| 351 | |
| 352 | /* |
| 353 | * This ioctl is called twice, once to determine how much space is |
| 354 | * needed, and the 2nd time to fill it. |
| 355 | */ |
| 356 | if (num_planes && |
| 357 | (plane_resp->count_planes >= num_planes)) { |
| 358 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; |
| 359 | |
| 360 | /* Plane lists are invariant, no locking needed. */ |
| 361 | drm_for_each_plane(plane, dev) { |
| 362 | /* |
| 363 | * Unless userspace set the 'universal planes' |
| 364 | * capability bit, only advertise overlays. |
| 365 | */ |
| 366 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && |
| 367 | !file_priv->universal_planes) |
| 368 | continue; |
| 369 | |
| 370 | if (put_user(plane->base.id, plane_ptr + copied)) |
| 371 | return -EFAULT; |
| 372 | copied++; |
| 373 | } |
| 374 | } |
| 375 | plane_resp->count_planes = num_planes; |
| 376 | |
| 377 | return 0; |
| 378 | } |
| 379 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 380 | int drm_mode_getplane(struct drm_device *dev, void *data, |
| 381 | struct drm_file *file_priv) |
| 382 | { |
| 383 | struct drm_mode_get_plane *plane_resp = data; |
| 384 | struct drm_plane *plane; |
| 385 | uint32_t __user *format_ptr; |
| 386 | |
| 387 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 388 | return -EINVAL; |
| 389 | |
| 390 | plane = drm_plane_find(dev, plane_resp->plane_id); |
| 391 | if (!plane) |
| 392 | return -ENOENT; |
| 393 | |
| 394 | drm_modeset_lock(&plane->mutex, NULL); |
Daniel Stone | de7b6be | 2016-12-13 18:19:12 +0000 | [diff] [blame] | 395 | if (plane->state && plane->state->crtc) |
| 396 | plane_resp->crtc_id = plane->state->crtc->base.id; |
| 397 | else if (!plane->state && plane->crtc) |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 398 | plane_resp->crtc_id = plane->crtc->base.id; |
| 399 | else |
| 400 | plane_resp->crtc_id = 0; |
| 401 | |
Daniel Stone | de7b6be | 2016-12-13 18:19:12 +0000 | [diff] [blame] | 402 | if (plane->state && plane->state->fb) |
| 403 | plane_resp->fb_id = plane->state->fb->base.id; |
| 404 | else if (!plane->state && plane->fb) |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 405 | plane_resp->fb_id = plane->fb->base.id; |
| 406 | else |
| 407 | plane_resp->fb_id = 0; |
| 408 | drm_modeset_unlock(&plane->mutex); |
| 409 | |
| 410 | plane_resp->plane_id = plane->base.id; |
| 411 | plane_resp->possible_crtcs = plane->possible_crtcs; |
| 412 | plane_resp->gamma_size = 0; |
| 413 | |
| 414 | /* |
| 415 | * This ioctl is called twice, once to determine how much space is |
| 416 | * needed, and the 2nd time to fill it. |
| 417 | */ |
| 418 | if (plane->format_count && |
| 419 | (plane_resp->count_format_types >= plane->format_count)) { |
| 420 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; |
| 421 | if (copy_to_user(format_ptr, |
| 422 | plane->format_types, |
| 423 | sizeof(uint32_t) * plane->format_count)) { |
| 424 | return -EFAULT; |
| 425 | } |
| 426 | } |
| 427 | plane_resp->count_format_types = plane->format_count; |
| 428 | |
| 429 | return 0; |
| 430 | } |
| 431 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 432 | int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format) |
| 433 | { |
| 434 | unsigned int i; |
| 435 | |
| 436 | for (i = 0; i < plane->format_count; i++) { |
| 437 | if (format == plane->format_types[i]) |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | return -EINVAL; |
| 442 | } |
| 443 | |
| 444 | /* |
| 445 | * setplane_internal - setplane handler for internal callers |
| 446 | * |
| 447 | * Note that we assume an extra reference has already been taken on fb. If the |
| 448 | * update fails, this reference will be dropped before return; if it succeeds, |
| 449 | * the previous framebuffer (if any) will be unreferenced instead. |
| 450 | * |
| 451 | * src_{x,y,w,h} are provided in 16.16 fixed point format |
| 452 | */ |
| 453 | static int __setplane_internal(struct drm_plane *plane, |
| 454 | struct drm_crtc *crtc, |
| 455 | struct drm_framebuffer *fb, |
| 456 | int32_t crtc_x, int32_t crtc_y, |
| 457 | uint32_t crtc_w, uint32_t crtc_h, |
| 458 | /* src_{x,y,w,h} values are 16.16 fixed point */ |
| 459 | uint32_t src_x, uint32_t src_y, |
| 460 | uint32_t src_w, uint32_t src_h) |
| 461 | { |
| 462 | int ret = 0; |
| 463 | |
| 464 | /* No fb means shut it down */ |
| 465 | if (!fb) { |
| 466 | plane->old_fb = plane->fb; |
| 467 | ret = plane->funcs->disable_plane(plane); |
| 468 | if (!ret) { |
| 469 | plane->crtc = NULL; |
| 470 | plane->fb = NULL; |
| 471 | } else { |
| 472 | plane->old_fb = NULL; |
| 473 | } |
| 474 | goto out; |
| 475 | } |
| 476 | |
| 477 | /* Check whether this plane is usable on this CRTC */ |
| 478 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { |
| 479 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); |
| 480 | ret = -EINVAL; |
| 481 | goto out; |
| 482 | } |
| 483 | |
| 484 | /* Check whether this plane supports the fb pixel format. */ |
Ville Syrjälä | 438b74a | 2016-12-14 23:32:55 +0200 | [diff] [blame^] | 485 | ret = drm_plane_check_pixel_format(plane, fb->format->format); |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 486 | if (ret) { |
Eric Engestrom | b3c11ac | 2016-11-12 01:12:56 +0000 | [diff] [blame] | 487 | struct drm_format_name_buf format_name; |
| 488 | DRM_DEBUG_KMS("Invalid pixel format %s\n", |
Ville Syrjälä | 438b74a | 2016-12-14 23:32:55 +0200 | [diff] [blame^] | 489 | drm_get_format_name(fb->format->format, |
Eric Engestrom | b3c11ac | 2016-11-12 01:12:56 +0000 | [diff] [blame] | 490 | &format_name)); |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 491 | goto out; |
| 492 | } |
| 493 | |
| 494 | /* Give drivers some help against integer overflows */ |
| 495 | if (crtc_w > INT_MAX || |
| 496 | crtc_x > INT_MAX - (int32_t) crtc_w || |
| 497 | crtc_h > INT_MAX || |
| 498 | crtc_y > INT_MAX - (int32_t) crtc_h) { |
| 499 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", |
| 500 | crtc_w, crtc_h, crtc_x, crtc_y); |
| 501 | ret = -ERANGE; |
| 502 | goto out; |
| 503 | } |
| 504 | |
| 505 | ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb); |
| 506 | if (ret) |
| 507 | goto out; |
| 508 | |
| 509 | plane->old_fb = plane->fb; |
| 510 | ret = plane->funcs->update_plane(plane, crtc, fb, |
| 511 | crtc_x, crtc_y, crtc_w, crtc_h, |
| 512 | src_x, src_y, src_w, src_h); |
| 513 | if (!ret) { |
| 514 | plane->crtc = crtc; |
| 515 | plane->fb = fb; |
| 516 | fb = NULL; |
| 517 | } else { |
| 518 | plane->old_fb = NULL; |
| 519 | } |
| 520 | |
| 521 | out: |
| 522 | if (fb) |
| 523 | drm_framebuffer_unreference(fb); |
| 524 | if (plane->old_fb) |
| 525 | drm_framebuffer_unreference(plane->old_fb); |
| 526 | plane->old_fb = NULL; |
| 527 | |
| 528 | return ret; |
| 529 | } |
| 530 | |
| 531 | static int setplane_internal(struct drm_plane *plane, |
| 532 | struct drm_crtc *crtc, |
| 533 | struct drm_framebuffer *fb, |
| 534 | int32_t crtc_x, int32_t crtc_y, |
| 535 | uint32_t crtc_w, uint32_t crtc_h, |
| 536 | /* src_{x,y,w,h} values are 16.16 fixed point */ |
| 537 | uint32_t src_x, uint32_t src_y, |
| 538 | uint32_t src_w, uint32_t src_h) |
| 539 | { |
| 540 | int ret; |
| 541 | |
| 542 | drm_modeset_lock_all(plane->dev); |
| 543 | ret = __setplane_internal(plane, crtc, fb, |
| 544 | crtc_x, crtc_y, crtc_w, crtc_h, |
| 545 | src_x, src_y, src_w, src_h); |
| 546 | drm_modeset_unlock_all(plane->dev); |
| 547 | |
| 548 | return ret; |
| 549 | } |
| 550 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 551 | int drm_mode_setplane(struct drm_device *dev, void *data, |
| 552 | struct drm_file *file_priv) |
| 553 | { |
| 554 | struct drm_mode_set_plane *plane_req = data; |
| 555 | struct drm_plane *plane; |
| 556 | struct drm_crtc *crtc = NULL; |
| 557 | struct drm_framebuffer *fb = NULL; |
| 558 | |
| 559 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 560 | return -EINVAL; |
| 561 | |
| 562 | /* |
| 563 | * First, find the plane, crtc, and fb objects. If not available, |
| 564 | * we don't bother to call the driver. |
| 565 | */ |
| 566 | plane = drm_plane_find(dev, plane_req->plane_id); |
| 567 | if (!plane) { |
| 568 | DRM_DEBUG_KMS("Unknown plane ID %d\n", |
| 569 | plane_req->plane_id); |
| 570 | return -ENOENT; |
| 571 | } |
| 572 | |
| 573 | if (plane_req->fb_id) { |
| 574 | fb = drm_framebuffer_lookup(dev, plane_req->fb_id); |
| 575 | if (!fb) { |
| 576 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", |
| 577 | plane_req->fb_id); |
| 578 | return -ENOENT; |
| 579 | } |
| 580 | |
| 581 | crtc = drm_crtc_find(dev, plane_req->crtc_id); |
| 582 | if (!crtc) { |
| 583 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
| 584 | plane_req->crtc_id); |
| 585 | return -ENOENT; |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | /* |
| 590 | * setplane_internal will take care of deref'ing either the old or new |
| 591 | * framebuffer depending on success. |
| 592 | */ |
| 593 | return setplane_internal(plane, crtc, fb, |
| 594 | plane_req->crtc_x, plane_req->crtc_y, |
| 595 | plane_req->crtc_w, plane_req->crtc_h, |
| 596 | plane_req->src_x, plane_req->src_y, |
| 597 | plane_req->src_w, plane_req->src_h); |
| 598 | } |
| 599 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 600 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, |
| 601 | struct drm_mode_cursor2 *req, |
| 602 | struct drm_file *file_priv) |
| 603 | { |
| 604 | struct drm_device *dev = crtc->dev; |
| 605 | struct drm_framebuffer *fb = NULL; |
| 606 | struct drm_mode_fb_cmd2 fbreq = { |
| 607 | .width = req->width, |
| 608 | .height = req->height, |
| 609 | .pixel_format = DRM_FORMAT_ARGB8888, |
| 610 | .pitches = { req->width * 4 }, |
| 611 | .handles = { req->handle }, |
| 612 | }; |
| 613 | int32_t crtc_x, crtc_y; |
| 614 | uint32_t crtc_w = 0, crtc_h = 0; |
| 615 | uint32_t src_w = 0, src_h = 0; |
| 616 | int ret = 0; |
| 617 | |
| 618 | BUG_ON(!crtc->cursor); |
| 619 | WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL); |
| 620 | |
| 621 | /* |
| 622 | * Obtain fb we'll be using (either new or existing) and take an extra |
| 623 | * reference to it if fb != null. setplane will take care of dropping |
| 624 | * the reference if the plane update fails. |
| 625 | */ |
| 626 | if (req->flags & DRM_MODE_CURSOR_BO) { |
| 627 | if (req->handle) { |
| 628 | fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv); |
| 629 | if (IS_ERR(fb)) { |
| 630 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); |
| 631 | return PTR_ERR(fb); |
| 632 | } |
| 633 | fb->hot_x = req->hot_x; |
| 634 | fb->hot_y = req->hot_y; |
| 635 | } else { |
| 636 | fb = NULL; |
| 637 | } |
| 638 | } else { |
| 639 | fb = crtc->cursor->fb; |
| 640 | if (fb) |
| 641 | drm_framebuffer_reference(fb); |
| 642 | } |
| 643 | |
| 644 | if (req->flags & DRM_MODE_CURSOR_MOVE) { |
| 645 | crtc_x = req->x; |
| 646 | crtc_y = req->y; |
| 647 | } else { |
| 648 | crtc_x = crtc->cursor_x; |
| 649 | crtc_y = crtc->cursor_y; |
| 650 | } |
| 651 | |
| 652 | if (fb) { |
| 653 | crtc_w = fb->width; |
| 654 | crtc_h = fb->height; |
| 655 | src_w = fb->width << 16; |
| 656 | src_h = fb->height << 16; |
| 657 | } |
| 658 | |
| 659 | /* |
| 660 | * setplane_internal will take care of deref'ing either the old or new |
| 661 | * framebuffer depending on success. |
| 662 | */ |
| 663 | ret = __setplane_internal(crtc->cursor, crtc, fb, |
| 664 | crtc_x, crtc_y, crtc_w, crtc_h, |
| 665 | 0, 0, src_w, src_h); |
| 666 | |
| 667 | /* Update successful; save new cursor position, if necessary */ |
| 668 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { |
| 669 | crtc->cursor_x = req->x; |
| 670 | crtc->cursor_y = req->y; |
| 671 | } |
| 672 | |
| 673 | return ret; |
| 674 | } |
| 675 | |
| 676 | static int drm_mode_cursor_common(struct drm_device *dev, |
| 677 | struct drm_mode_cursor2 *req, |
| 678 | struct drm_file *file_priv) |
| 679 | { |
| 680 | struct drm_crtc *crtc; |
| 681 | int ret = 0; |
| 682 | |
| 683 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 684 | return -EINVAL; |
| 685 | |
| 686 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) |
| 687 | return -EINVAL; |
| 688 | |
| 689 | crtc = drm_crtc_find(dev, req->crtc_id); |
| 690 | if (!crtc) { |
| 691 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); |
| 692 | return -ENOENT; |
| 693 | } |
| 694 | |
| 695 | /* |
| 696 | * If this crtc has a universal cursor plane, call that plane's update |
| 697 | * handler rather than using legacy cursor handlers. |
| 698 | */ |
| 699 | drm_modeset_lock_crtc(crtc, crtc->cursor); |
| 700 | if (crtc->cursor) { |
| 701 | ret = drm_mode_cursor_universal(crtc, req, file_priv); |
| 702 | goto out; |
| 703 | } |
| 704 | |
| 705 | if (req->flags & DRM_MODE_CURSOR_BO) { |
| 706 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { |
| 707 | ret = -ENXIO; |
| 708 | goto out; |
| 709 | } |
| 710 | /* Turns off the cursor if handle is 0 */ |
| 711 | if (crtc->funcs->cursor_set2) |
| 712 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, |
| 713 | req->width, req->height, req->hot_x, req->hot_y); |
| 714 | else |
| 715 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, |
| 716 | req->width, req->height); |
| 717 | } |
| 718 | |
| 719 | if (req->flags & DRM_MODE_CURSOR_MOVE) { |
| 720 | if (crtc->funcs->cursor_move) { |
| 721 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); |
| 722 | } else { |
| 723 | ret = -EFAULT; |
| 724 | goto out; |
| 725 | } |
| 726 | } |
| 727 | out: |
| 728 | drm_modeset_unlock_crtc(crtc); |
| 729 | |
| 730 | return ret; |
| 731 | |
| 732 | } |
| 733 | |
| 734 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 735 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
| 736 | void *data, struct drm_file *file_priv) |
| 737 | { |
| 738 | struct drm_mode_cursor *req = data; |
| 739 | struct drm_mode_cursor2 new_req; |
| 740 | |
| 741 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); |
| 742 | new_req.hot_x = new_req.hot_y = 0; |
| 743 | |
| 744 | return drm_mode_cursor_common(dev, &new_req, file_priv); |
| 745 | } |
| 746 | |
Daniel Vetter | 532b367 | 2016-09-21 10:59:25 +0200 | [diff] [blame] | 747 | /* |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 748 | * Set the cursor configuration based on user request. This implements the 2nd |
| 749 | * version of the cursor ioctl, which allows userspace to additionally specify |
| 750 | * the hotspot of the pointer. |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 751 | */ |
| 752 | int drm_mode_cursor2_ioctl(struct drm_device *dev, |
| 753 | void *data, struct drm_file *file_priv) |
| 754 | { |
| 755 | struct drm_mode_cursor2 *req = data; |
| 756 | |
| 757 | return drm_mode_cursor_common(dev, req, file_priv); |
| 758 | } |
| 759 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 760 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
| 761 | void *data, struct drm_file *file_priv) |
| 762 | { |
| 763 | struct drm_mode_crtc_page_flip_target *page_flip = data; |
| 764 | struct drm_crtc *crtc; |
| 765 | struct drm_framebuffer *fb = NULL; |
| 766 | struct drm_pending_vblank_event *e = NULL; |
| 767 | u32 target_vblank = page_flip->sequence; |
| 768 | int ret = -EINVAL; |
| 769 | |
| 770 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 771 | return -EINVAL; |
| 772 | |
| 773 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS) |
| 774 | return -EINVAL; |
| 775 | |
| 776 | if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) |
| 777 | return -EINVAL; |
| 778 | |
| 779 | /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags |
| 780 | * can be specified |
| 781 | */ |
| 782 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET) |
| 783 | return -EINVAL; |
| 784 | |
| 785 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) |
| 786 | return -EINVAL; |
| 787 | |
| 788 | crtc = drm_crtc_find(dev, page_flip->crtc_id); |
| 789 | if (!crtc) |
| 790 | return -ENOENT; |
| 791 | |
Daniel Vetter | 2adb29b | 2016-10-03 10:28:27 +0200 | [diff] [blame] | 792 | if (crtc->funcs->page_flip_target) { |
| 793 | u32 current_vblank; |
| 794 | int r; |
| 795 | |
| 796 | r = drm_crtc_vblank_get(crtc); |
| 797 | if (r) |
| 798 | return r; |
| 799 | |
| 800 | current_vblank = drm_crtc_vblank_count(crtc); |
| 801 | |
| 802 | switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) { |
| 803 | case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE: |
| 804 | if ((int)(target_vblank - current_vblank) > 1) { |
| 805 | DRM_DEBUG("Invalid absolute flip target %u, " |
| 806 | "must be <= %u\n", target_vblank, |
| 807 | current_vblank + 1); |
| 808 | drm_crtc_vblank_put(crtc); |
| 809 | return -EINVAL; |
| 810 | } |
| 811 | break; |
| 812 | case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE: |
| 813 | if (target_vblank != 0 && target_vblank != 1) { |
| 814 | DRM_DEBUG("Invalid relative flip target %u, " |
| 815 | "must be 0 or 1\n", target_vblank); |
| 816 | drm_crtc_vblank_put(crtc); |
| 817 | return -EINVAL; |
| 818 | } |
| 819 | target_vblank += current_vblank; |
| 820 | break; |
| 821 | default: |
| 822 | target_vblank = current_vblank + |
| 823 | !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); |
| 824 | break; |
| 825 | } |
| 826 | } else if (crtc->funcs->page_flip == NULL || |
| 827 | (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) { |
| 828 | return -EINVAL; |
| 829 | } |
| 830 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 831 | drm_modeset_lock_crtc(crtc, crtc->primary); |
| 832 | if (crtc->primary->fb == NULL) { |
| 833 | /* The framebuffer is currently unbound, presumably |
| 834 | * due to a hotplug event, that userspace has not |
| 835 | * yet discovered. |
| 836 | */ |
| 837 | ret = -EBUSY; |
| 838 | goto out; |
| 839 | } |
| 840 | |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 841 | fb = drm_framebuffer_lookup(dev, page_flip->fb_id); |
| 842 | if (!fb) { |
| 843 | ret = -ENOENT; |
| 844 | goto out; |
| 845 | } |
| 846 | |
| 847 | if (crtc->state) { |
| 848 | const struct drm_plane_state *state = crtc->primary->state; |
| 849 | |
| 850 | ret = drm_framebuffer_check_src_coords(state->src_x, |
| 851 | state->src_y, |
| 852 | state->src_w, |
| 853 | state->src_h, |
| 854 | fb); |
| 855 | } else { |
| 856 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); |
| 857 | } |
| 858 | if (ret) |
| 859 | goto out; |
| 860 | |
Ville Syrjälä | 438b74a | 2016-12-14 23:32:55 +0200 | [diff] [blame^] | 861 | if (crtc->primary->fb->format->format != fb->format->format) { |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 862 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
| 863 | ret = -EINVAL; |
| 864 | goto out; |
| 865 | } |
| 866 | |
| 867 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
| 868 | e = kzalloc(sizeof *e, GFP_KERNEL); |
| 869 | if (!e) { |
| 870 | ret = -ENOMEM; |
| 871 | goto out; |
| 872 | } |
| 873 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
| 874 | e->event.base.length = sizeof(e->event); |
| 875 | e->event.user_data = page_flip->user_data; |
| 876 | ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base); |
| 877 | if (ret) { |
| 878 | kfree(e); |
| 879 | goto out; |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | crtc->primary->old_fb = crtc->primary->fb; |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 884 | if (crtc->funcs->page_flip_target) |
| 885 | ret = crtc->funcs->page_flip_target(crtc, fb, e, |
| 886 | page_flip->flags, |
| 887 | target_vblank); |
| 888 | else |
| 889 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); |
| 890 | if (ret) { |
| 891 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) |
| 892 | drm_event_cancel_free(dev, &e->base); |
| 893 | /* Keep the old fb, don't unref it. */ |
| 894 | crtc->primary->old_fb = NULL; |
| 895 | } else { |
| 896 | crtc->primary->fb = fb; |
| 897 | /* Unref only the old framebuffer. */ |
| 898 | fb = NULL; |
| 899 | } |
| 900 | |
| 901 | out: |
| 902 | if (ret && crtc->funcs->page_flip_target) |
| 903 | drm_crtc_vblank_put(crtc); |
Chris Wilson | e86fa21 | 2016-09-28 23:25:00 +0100 | [diff] [blame] | 904 | if (fb) |
| 905 | drm_framebuffer_unreference(fb); |
Daniel Vetter | 43968d7 | 2016-09-21 10:59:24 +0200 | [diff] [blame] | 906 | if (crtc->primary->old_fb) |
| 907 | drm_framebuffer_unreference(crtc->primary->old_fb); |
| 908 | crtc->primary->old_fb = NULL; |
| 909 | drm_modeset_unlock_crtc(crtc); |
| 910 | |
| 911 | return ret; |
| 912 | } |