drivers/gpu/drm/qxl/qxl_display.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25
  26 #include <linux/crc32.h>
  27 #include <linux/delay.h>
  28
  29 #include <drm/drm_atomic.h>
  30 #include <drm/drm_atomic_helper.h>
  31 #include <drm/drm_gem_framebuffer_helper.h>
  32 #include <drm/drm_plane_helper.h>
  33 #include <drm/drm_probe_helper.h>
  34 #include <drm/drm_simple_kms_helper.h>
  35
  36 #include "qxl_drv.h"
  37 #include "qxl_object.h"
  38
  39 static bool qxl_head_enabled(struct qxl_head *head)
  40 {
  41         return head->width && head->height;
  42 }
  43
  44 static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
  45                 unsigned int count)
  46 {
  47         if (qdev->client_monitors_config &&
  48             count > qdev->client_monitors_config->count) {
  49                 kfree(qdev->client_monitors_config);
  50                 qdev->client_monitors_config = NULL;
  51         }
  52         if (!qdev->client_monitors_config) {
  53                 qdev->client_monitors_config = kzalloc(
  54                                 struct_size(qdev->client_monitors_config,
  55                                 heads, count), GFP_KERNEL);
  56                 if (!qdev->client_monitors_config)
  57                         return -ENOMEM;
  58         }
  59         qdev->client_monitors_config->count = count;
  60         return 0;
  61 }
  62
  63 enum {
  64         MONITORS_CONFIG_MODIFIED,
  65         MONITORS_CONFIG_UNCHANGED,
  66         MONITORS_CONFIG_BAD_CRC,
  67         MONITORS_CONFIG_ERROR,
  68 };
  69
  70 static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
  71 {
  72         int i;
  73         int num_monitors;
  74         uint32_t crc;
  75         int status = MONITORS_CONFIG_UNCHANGED;
  76
  77         num_monitors = qdev->rom->client_monitors_config.count;
  78         crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
  79                   sizeof(qdev->rom->client_monitors_config));
  80         if (crc != qdev->rom->client_monitors_config_crc)
  81                 return MONITORS_CONFIG_BAD_CRC;
  82         if (!num_monitors) {
  83                 DRM_DEBUG_KMS("no client monitors configured\n");
  84                 return status;
  85         }
  86         if (num_monitors > qxl_num_crtc) {
  87                 DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
  88                               qxl_num_crtc, num_monitors);
  89                 num_monitors = qxl_num_crtc;
  90         } else {
  91                 num_monitors = qdev->rom->client_monitors_config.count;
  92         }
  93         if (qdev->client_monitors_config
  94               && (num_monitors != qdev->client_monitors_config->count)) {
  95                 status = MONITORS_CONFIG_MODIFIED;
  96         }
  97         if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
  98                 status = MONITORS_CONFIG_ERROR;
  99                 return status;
 100         }
 101         /* we copy max from the client but it isn't used */
 102         qdev->client_monitors_config->max_allowed = qxl_num_crtc;
 103         for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
 104                 struct qxl_urect *c_rect =
 105                         &qdev->rom->client_monitors_config.heads[i];
 106                 struct qxl_head *client_head =
 107                         &qdev->client_monitors_config->heads[i];
 108                 if (client_head->x != c_rect->left) {
 109                         client_head->x = c_rect->left;
 110                         status = MONITORS_CONFIG_MODIFIED;
 111                 }
 112                 if (client_head->y != c_rect->top) {
 113                         client_head->y = c_rect->top;
 114                         status = MONITORS_CONFIG_MODIFIED;
 115                 }
 116                 if (client_head->width != c_rect->right - c_rect->left) {
 117                         client_head->width = c_rect->right - c_rect->left;
 118                         status = MONITORS_CONFIG_MODIFIED;
 119                 }
 120                 if (client_head->height != c_rect->bottom - c_rect->top) {
 121                         client_head->height = c_rect->bottom - c_rect->top;
 122                         status = MONITORS_CONFIG_MODIFIED;
 123                 }
 124                 if (client_head->surface_id != 0) {
 125                         client_head->surface_id = 0;
 126                         status = MONITORS_CONFIG_MODIFIED;
 127                 }
 128                 if (client_head->id != i) {
 129                         client_head->id = i;
 130                         status = MONITORS_CONFIG_MODIFIED;
 131                 }
 132                 if (client_head->flags != 0) {
 133                         client_head->flags = 0;
 134                         status = MONITORS_CONFIG_MODIFIED;
 135                 }
 136                 DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
 137                           client_head->x, client_head->y);
 138         }
 139
 140         return status;
 141 }
 142
 143 static void qxl_update_offset_props(struct qxl_device *qdev)
 144 {
 145         struct drm_device *dev = &qdev->ddev;
 146         struct drm_connector *connector;
 147         struct qxl_output *output;
 148         struct qxl_head *head;
 149
 150         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 151                 output = drm_connector_to_qxl_output(connector);
 152
 153                 head = &qdev->client_monitors_config->heads[output->index];
 154
 155                 drm_object_property_set_value(&connector->base,
 156                         dev->mode_config.suggested_x_property, head->x);
 157                 drm_object_property_set_value(&connector->base,
 158                         dev->mode_config.suggested_y_property, head->y);
 159         }
 160 }
 161
 162 void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
 163 {
 164         struct drm_device *dev = &qdev->ddev;
 165         int status, retries;
 166
 167         for (retries = 0; retries < 10; retries++) {
 168                 status = qxl_display_copy_rom_client_monitors_config(qdev);
 169                 if (status != MONITORS_CONFIG_BAD_CRC)
 170                         break;
 171                 udelay(5);
 172         }
 173         if (status == MONITORS_CONFIG_ERROR) {
 174                 DRM_DEBUG_KMS("ignoring client monitors config: error");
 175                 return;
 176         }
 177         if (status == MONITORS_CONFIG_BAD_CRC) {
 178                 DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
 179                 return;
 180         }
 181         if (status == MONITORS_CONFIG_UNCHANGED) {
 182                 DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
 183                 return;
 184         }
 185
 186         drm_modeset_lock_all(dev);
 187         qxl_update_offset_props(qdev);
 188         drm_modeset_unlock_all(dev);
 189         if (!drm_helper_hpd_irq_event(dev)) {
 190                 /* notify that the monitor configuration changed, to
 191                    adjust at the arbitrary resolution */
 192                 drm_kms_helper_hotplug_event(dev);
 193         }
 194 }
 195
 196 static int qxl_check_mode(struct qxl_device *qdev,
 197                           unsigned int width,
 198                           unsigned int height)
 199 {
 200         unsigned int stride;
 201         unsigned int size;
 202
 203         if (check_mul_overflow(width, 4u, &stride))
 204                 return -EINVAL;
 205         if (check_mul_overflow(stride, height, &size))
 206                 return -EINVAL;
 207         if (size > qdev->vram_size)
 208                 return -ENOMEM;
 209         return 0;
 210 }
 211
 212 static int qxl_check_framebuffer(struct qxl_device *qdev,
 213                                  struct qxl_bo *bo)
 214 {
 215         return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
 216 }
 217
 218 static int qxl_add_mode(struct drm_connector *connector,
 219                         unsigned int width,
 220                         unsigned int height,
 221                         bool preferred)
 222 {
 223         struct drm_device *dev = connector->dev;
 224         struct qxl_device *qdev = to_qxl(dev);
 225         struct drm_display_mode *mode = NULL;
 226         int rc;
 227
 228         rc = qxl_check_mode(qdev, width, height);
 229         if (rc != 0)
 230                 return 0;
 231
 232         mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
 233         if (preferred)
 234                 mode->type |= DRM_MODE_TYPE_PREFERRED;
 235         mode->hdisplay = width;
 236         mode->vdisplay = height;
 237         drm_mode_set_name(mode);
 238         drm_mode_probed_add(connector, mode);
 239         return 1;
 240 }
 241
 242 static int qxl_add_monitors_config_modes(struct drm_connector *connector)
 243 {
 244         struct drm_device *dev = connector->dev;
 245         struct qxl_device *qdev = to_qxl(dev);
 246         struct qxl_output *output = drm_connector_to_qxl_output(connector);
 247         int h = output->index;
 248         struct qxl_head *head;
 249
 250         if (!qdev->monitors_config)
 251                 return 0;
 252         if (h >= qxl_num_crtc)
 253                 return 0;
 254         if (!qdev->client_monitors_config)
 255                 return 0;
 256         if (h >= qdev->client_monitors_config->count)
 257                 return 0;
 258
 259         head = &qdev->client_monitors_config->heads[h];
 260         DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
 261
 262         return qxl_add_mode(connector, head->width, head->height, true);
 263 }
 264
 265 static struct mode_size {
 266         int w;
 267         int h;
 268 } extra_modes[] = {
 269         { 720,  480},
 270         {1152,  768},
 271         {1280,  854},
 272 };
 273
 274 static int qxl_add_extra_modes(struct drm_connector *connector)
 275 {
 276         int i, ret = 0;
 277
 278         for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
 279                 ret += qxl_add_mode(connector,
 280                                     extra_modes[i].w,
 281                                     extra_modes[i].h,
 282                                     false);
 283         return ret;
 284 }
 285
 286 static void qxl_send_monitors_config(struct qxl_device *qdev)
 287 {
 288         int i;
 289
 290         BUG_ON(!qdev->ram_header->monitors_config);
 291
 292         if (qdev->monitors_config->count == 0)
 293                 return;
 294
 295         for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
 296                 struct qxl_head *head = &qdev->monitors_config->heads[i];
 297
 298                 if (head->y > 8192 || head->x > 8192 ||
 299                     head->width > 8192 || head->height > 8192) {
 300                         DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
 301                                   i, head->width, head->height,
 302                                   head->x, head->y);
 303                         return;
 304                 }
 305         }
 306         qxl_io_monitors_config(qdev);
 307 }
 308
 309 static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
 310                                             const char *reason)
 311 {
 312         struct drm_device *dev = crtc->dev;
 313         struct qxl_device *qdev = to_qxl(dev);
 314         struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
 315         struct qxl_head head;
 316         int oldcount, i = qcrtc->index;
 317
 318         if (!qdev->primary_bo) {
 319                 DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
 320                 return;
 321         }
 322
 323         if (!qdev->monitors_config || qxl_num_crtc <= i)
 324                 return;
 325
 326         head.id = i;
 327         head.flags = 0;
 328         oldcount = qdev->monitors_config->count;
 329         if (crtc->state->active) {
 330                 struct drm_display_mode *mode = &crtc->mode;
 331
 332                 head.width = mode->hdisplay;
 333                 head.height = mode->vdisplay;
 334                 head.x = crtc->x;
 335                 head.y = crtc->y;
 336                 if (qdev->monitors_config->count < i + 1)
 337                         qdev->monitors_config->count = i + 1;
 338                 if (qdev->primary_bo == qdev->dumb_shadow_bo)
 339                         head.x += qdev->dumb_heads[i].x;
 340         } else if (i > 0) {
 341                 head.width = 0;
 342                 head.height = 0;
 343                 head.x = 0;
 344                 head.y = 0;
 345                 if (qdev->monitors_config->count == i + 1)
 346                         qdev->monitors_config->count = i;
 347         } else {
 348                 DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
 349                 return;
 350         }
 351
 352         if (head.width  == qdev->monitors_config->heads[i].width  &&
 353             head.height == qdev->monitors_config->heads[i].height &&
 354             head.x      == qdev->monitors_config->heads[i].x      &&
 355             head.y      == qdev->monitors_config->heads[i].y      &&
 356             oldcount    == qdev->monitors_config->count)
 357                 return;
 358
 359         DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
 360                       i, head.width, head.height, head.x, head.y,
 361                       crtc->state->active ? "on" : "off", reason);
 362         if (oldcount != qdev->monitors_config->count)
 363                 DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
 364                               oldcount, qdev->monitors_config->count,
 365                               qxl_num_crtc);
 366
 367         qdev->monitors_config->heads[i] = head;
 368         qdev->monitors_config->max_allowed = qxl_num_crtc;
 369         qxl_send_monitors_config(qdev);
 370 }
 371
 372 static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
 373                                   struct drm_crtc_state *old_crtc_state)
 374 {
 375         qxl_crtc_update_monitors_config(crtc, "flush");
 376 }
 377
 378 static void qxl_crtc_destroy(struct drm_crtc *crtc)
 379 {
 380         struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
 381
 382         qxl_bo_unref(&qxl_crtc->cursor_bo);
 383         drm_crtc_cleanup(crtc);
 384         kfree(qxl_crtc);
 385 }
 386
 387 static const struct drm_crtc_funcs qxl_crtc_funcs = {
 388         .set_config = drm_atomic_helper_set_config,
 389         .destroy = qxl_crtc_destroy,
 390         .page_flip = drm_atomic_helper_page_flip,
 391         .reset = drm_atomic_helper_crtc_reset,
 392         .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 393         .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 394 };
 395
 396 static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
 397                                          struct drm_file *file_priv,
 398                                          unsigned int flags, unsigned int color,
 399                                          struct drm_clip_rect *clips,
 400                                          unsigned int num_clips)
 401 {
 402         /* TODO: vmwgfx where this was cribbed from had locking. Why? */
 403         struct qxl_device *qdev = to_qxl(fb->dev);
 404         struct drm_clip_rect norect;
 405         struct qxl_bo *qobj;
 406         bool is_primary;
 407         int inc = 1;
 408
 409         drm_modeset_lock_all(fb->dev);
 410
 411         qobj = gem_to_qxl_bo(fb->obj[0]);
 412         /* if we aren't primary surface ignore this */
 413         is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
 414         if (!is_primary) {
 415                 drm_modeset_unlock_all(fb->dev);
 416                 return 0;
 417         }
 418
 419         if (!num_clips) {
 420                 num_clips = 1;
 421                 clips = &norect;
 422                 norect.x1 = norect.y1 = 0;
 423                 norect.x2 = fb->width;
 424                 norect.y2 = fb->height;
 425         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 426                 num_clips /= 2;
 427                 inc = 2; /* skip source rects */
 428         }
 429
 430         qxl_draw_dirty_fb(qdev, fb, qobj, flags, color,
 431                           clips, num_clips, inc, 0);
 432
 433         drm_modeset_unlock_all(fb->dev);
 434
 435         return 0;
 436 }
 437
 438 static const struct drm_framebuffer_funcs qxl_fb_funcs = {
 439         .destroy = drm_gem_fb_destroy,
 440         .dirty = qxl_framebuffer_surface_dirty,
 441         .create_handle = drm_gem_fb_create_handle,
 442 };
 443
 444 static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
 445                                    struct drm_crtc_state *old_state)
 446 {
 447         qxl_crtc_update_monitors_config(crtc, "enable");
 448 }
 449
 450 static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
 451                                     struct drm_crtc_state *old_state)
 452 {
 453         qxl_crtc_update_monitors_config(crtc, "disable");
 454 }
 455
 456 static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
 457         .atomic_flush = qxl_crtc_atomic_flush,
 458         .atomic_enable = qxl_crtc_atomic_enable,
 459         .atomic_disable = qxl_crtc_atomic_disable,
 460 };
 461
 462 static int qxl_primary_atomic_check(struct drm_plane *plane,
 463                                     struct drm_plane_state *state)
 464 {
 465         struct qxl_device *qdev = to_qxl(plane->dev);
 466         struct qxl_bo *bo;
 467
 468         if (!state->crtc || !state->fb)
 469                 return 0;
 470
 471         bo = gem_to_qxl_bo(state->fb->obj[0]);
 472
 473         return qxl_check_framebuffer(qdev, bo);
 474 }
 475
 476 static int qxl_primary_apply_cursor(struct drm_plane *plane)
 477 {
 478         struct drm_device *dev = plane->dev;
 479         struct qxl_device *qdev = to_qxl(dev);
 480         struct drm_framebuffer *fb = plane->state->fb;
 481         struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
 482         struct qxl_cursor_cmd *cmd;
 483         struct qxl_release *release;
 484         int ret = 0;
 485
 486         if (!qcrtc->cursor_bo)
 487                 return 0;
 488
 489         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 490                                          QXL_RELEASE_CURSOR_CMD,
 491                                          &release, NULL);
 492         if (ret)
 493                 return ret;
 494
 495         ret = qxl_release_list_add(release, qcrtc->cursor_bo);
 496         if (ret)
 497                 goto out_free_release;
 498
 499         ret = qxl_release_reserve_list(release, false);
 500         if (ret)
 501                 goto out_free_release;
 502
 503         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 504         cmd->type = QXL_CURSOR_SET;
 505         cmd->u.set.position.x = plane->state->crtc_x + fb->hot_x;
 506         cmd->u.set.position.y = plane->state->crtc_y + fb->hot_y;
 507
 508         cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
 509
 510         cmd->u.set.visible = 1;
 511         qxl_release_unmap(qdev, release, &cmd->release_info);
 512
 513         qxl_release_fence_buffer_objects(release);
 514         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 515
 516         return ret;
 517
 518 out_free_release:
 519         qxl_release_free(qdev, release);
 520         return ret;
 521 }
 522
 523 static void qxl_primary_atomic_update(struct drm_plane *plane,
 524                                       struct drm_plane_state *old_state)
 525 {
 526         struct qxl_device *qdev = to_qxl(plane->dev);
 527         struct qxl_bo *bo = gem_to_qxl_bo(plane->state->fb->obj[0]);
 528         struct qxl_bo *primary;
 529         struct drm_clip_rect norect = {
 530             .x1 = 0,
 531             .y1 = 0,
 532             .x2 = plane->state->fb->width,
 533             .y2 = plane->state->fb->height
 534         };
 535         uint32_t dumb_shadow_offset = 0;
 536
 537         primary = bo->shadow ? bo->shadow : bo;
 538
 539         if (!primary->is_primary) {
 540                 if (qdev->primary_bo)
 541                         qxl_io_destroy_primary(qdev);
 542                 qxl_io_create_primary(qdev, primary);
 543                 qxl_primary_apply_cursor(plane);
 544         }
 545
 546         if (bo->is_dumb)
 547                 dumb_shadow_offset =
 548                         qdev->dumb_heads[plane->state->crtc->index].x;
 549
 550         qxl_draw_dirty_fb(qdev, plane->state->fb, bo, 0, 0, &norect, 1, 1,
 551                           dumb_shadow_offset);
 552 }
 553
 554 static void qxl_primary_atomic_disable(struct drm_plane *plane,
 555                                        struct drm_plane_state *old_state)
 556 {
 557         struct qxl_device *qdev = to_qxl(plane->dev);
 558
 559         if (old_state->fb) {
 560                 struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
 561
 562                 if (bo->is_primary) {
 563                         qxl_io_destroy_primary(qdev);
 564                         bo->is_primary = false;
 565                 }
 566         }
 567 }
 568
 569 static void qxl_cursor_atomic_update(struct drm_plane *plane,
 570                                      struct drm_plane_state *old_state)
 571 {
 572         struct drm_device *dev = plane->dev;
 573         struct qxl_device *qdev = to_qxl(dev);
 574         struct drm_framebuffer *fb = plane->state->fb;
 575         struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
 576         struct qxl_release *release;
 577         struct qxl_cursor_cmd *cmd;
 578         struct qxl_cursor *cursor;
 579         struct drm_gem_object *obj;
 580         struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL;
 581         int ret;
 582         void *user_ptr;
 583         int size = 64*64*4;
 584
 585         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 586                                          QXL_RELEASE_CURSOR_CMD,
 587                                          &release, NULL);
 588         if (ret)
 589                 return;
 590
 591         if (fb != old_state->fb) {
 592                 obj = fb->obj[0];
 593                 user_bo = gem_to_qxl_bo(obj);
 594
 595                 /* pinning is done in the prepare/cleanup framevbuffer */
 596                 ret = qxl_bo_kmap(user_bo, &user_ptr);
 597                 if (ret)
 598                         goto out_free_release;
 599
 600                 ret = qxl_alloc_bo_reserved(qdev, release,
 601                                             sizeof(struct qxl_cursor) + size,
 602                                             &cursor_bo);
 603                 if (ret)
 604                         goto out_kunmap;
 605
 606                 ret = qxl_bo_pin(cursor_bo);
 607                 if (ret)
 608                         goto out_free_bo;
 609
 610                 ret = qxl_release_reserve_list(release, true);
 611                 if (ret)
 612                         goto out_unpin;
 613
 614                 ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
 615                 if (ret)
 616                         goto out_backoff;
 617
 618                 cursor->header.unique = 0;
 619                 cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
 620                 cursor->header.width = 64;
 621                 cursor->header.height = 64;
 622                 cursor->header.hot_spot_x = fb->hot_x;
 623                 cursor->header.hot_spot_y = fb->hot_y;
 624                 cursor->data_size = size;
 625                 cursor->chunk.next_chunk = 0;
 626                 cursor->chunk.prev_chunk = 0;
 627                 cursor->chunk.data_size = size;
 628                 memcpy(cursor->chunk.data, user_ptr, size);
 629                 qxl_bo_kunmap(cursor_bo);
 630                 qxl_bo_kunmap(user_bo);
 631
 632                 cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
 633                 cmd->u.set.visible = 1;
 634                 cmd->u.set.shape = qxl_bo_physical_address(qdev,
 635                                                            cursor_bo, 0);
 636                 cmd->type = QXL_CURSOR_SET;
 637
 638                 old_cursor_bo = qcrtc->cursor_bo;
 639                 qcrtc->cursor_bo = cursor_bo;
 640                 cursor_bo = NULL;
 641         } else {
 642
 643                 ret = qxl_release_reserve_list(release, true);
 644                 if (ret)
 645                         goto out_free_release;
 646
 647                 cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
 648                 cmd->type = QXL_CURSOR_MOVE;
 649         }
 650
 651         cmd->u.position.x = plane->state->crtc_x + fb->hot_x;
 652         cmd->u.position.y = plane->state->crtc_y + fb->hot_y;
 653
 654         qxl_release_unmap(qdev, release, &cmd->release_info);
 655         qxl_release_fence_buffer_objects(release);
 656         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 657
 658         if (old_cursor_bo != NULL)
 659                 qxl_bo_unpin(old_cursor_bo);
 660         qxl_bo_unref(&old_cursor_bo);
 661         qxl_bo_unref(&cursor_bo);
 662
 663         return;
 664
 665 out_backoff:
 666         qxl_release_backoff_reserve_list(release);
 667 out_unpin:
 668         qxl_bo_unpin(cursor_bo);
 669 out_free_bo:
 670         qxl_bo_unref(&cursor_bo);
 671 out_kunmap:
 672         qxl_bo_kunmap(user_bo);
 673 out_free_release:
 674         qxl_release_free(qdev, release);
 675         return;
 676
 677 }
 678
 679 static void qxl_cursor_atomic_disable(struct drm_plane *plane,
 680                                       struct drm_plane_state *old_state)
 681 {
 682         struct qxl_device *qdev = to_qxl(plane->dev);
 683         struct qxl_release *release;
 684         struct qxl_cursor_cmd *cmd;
 685         int ret;
 686
 687         ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 688                                          QXL_RELEASE_CURSOR_CMD,
 689                                          &release, NULL);
 690         if (ret)
 691                 return;
 692
 693         ret = qxl_release_reserve_list(release, true);
 694         if (ret) {
 695                 qxl_release_free(qdev, release);
 696                 return;
 697         }
 698
 699         cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 700         cmd->type = QXL_CURSOR_HIDE;
 701         qxl_release_unmap(qdev, release, &cmd->release_info);
 702
 703         qxl_release_fence_buffer_objects(release);
 704         qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 705 }
 706
 707 static void qxl_update_dumb_head(struct qxl_device *qdev,
 708                                  int index, struct qxl_bo *bo)
 709 {
 710         uint32_t width, height;
 711
 712         if (index >= qdev->monitors_config->max_allowed)
 713                 return;
 714
 715         if (bo && bo->is_dumb) {
 716                 width = bo->surf.width;
 717                 height = bo->surf.height;
 718         } else {
 719                 width = 0;
 720                 height = 0;
 721         }
 722
 723         if (qdev->dumb_heads[index].width == width &&
 724             qdev->dumb_heads[index].height == height)
 725                 return;
 726
 727         DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
 728                   qdev->dumb_heads[index].width,
 729                   qdev->dumb_heads[index].height,
 730                   width, height);
 731         qdev->dumb_heads[index].width = width;
 732         qdev->dumb_heads[index].height = height;
 733 }
 734
 735 static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
 736                                  struct qxl_surface *surf)
 737 {
 738         struct qxl_head *head;
 739         int i;
 740
 741         memset(surf, 0, sizeof(*surf));
 742         for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
 743                 head = qdev->dumb_heads + i;
 744                 head->x = surf->width;
 745                 surf->width += head->width;
 746                 if (surf->height < head->height)
 747                         surf->height = head->height;
 748         }
 749         if (surf->width < 64)
 750                 surf->width = 64;
 751         if (surf->height < 64)
 752                 surf->height = 64;
 753         surf->format = SPICE_SURFACE_FMT_32_xRGB;
 754         surf->stride = surf->width * 4;
 755
 756         if (!qdev->dumb_shadow_bo ||
 757             qdev->dumb_shadow_bo->surf.width != surf->width ||
 758             qdev->dumb_shadow_bo->surf.height != surf->height)
 759                 DRM_DEBUG("%dx%d\n", surf->width, surf->height);
 760 }
 761
 762 static int qxl_plane_prepare_fb(struct drm_plane *plane,
 763                                 struct drm_plane_state *new_state)
 764 {
 765         struct qxl_device *qdev = to_qxl(plane->dev);
 766         struct drm_gem_object *obj;
 767         struct qxl_bo *user_bo;
 768         struct qxl_surface surf;
 769         int ret;
 770
 771         if (!new_state->fb)
 772                 return 0;
 773
 774         obj = new_state->fb->obj[0];
 775         user_bo = gem_to_qxl_bo(obj);
 776
 777         if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
 778             user_bo->is_dumb) {
 779                 qxl_update_dumb_head(qdev, new_state->crtc->index,
 780                                      user_bo);
 781                 qxl_calc_dumb_shadow(qdev, &surf);
 782                 if (!qdev->dumb_shadow_bo ||
 783                     qdev->dumb_shadow_bo->surf.width  != surf.width ||
 784                     qdev->dumb_shadow_bo->surf.height != surf.height) {
 785                         if (qdev->dumb_shadow_bo) {
 786                                 drm_gem_object_put_unlocked
 787                                         (&qdev->dumb_shadow_bo->tbo.base);
 788                                 qdev->dumb_shadow_bo = NULL;
 789                         }
 790                         qxl_bo_create(qdev, surf.height * surf.stride,
 791                                       true, true, QXL_GEM_DOMAIN_SURFACE, &surf,
 792                                       &qdev->dumb_shadow_bo);
 793                 }
 794                 if (user_bo->shadow != qdev->dumb_shadow_bo) {
 795                         if (user_bo->shadow) {
 796                                 drm_gem_object_put_unlocked
 797                                         (&user_bo->shadow->tbo.base);
 798                                 user_bo->shadow = NULL;
 799                         }
 800                         drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
 801                         user_bo->shadow = qdev->dumb_shadow_bo;
 802                 }
 803         }
 804
 805         ret = qxl_bo_pin(user_bo);
 806         if (ret)
 807                 return ret;
 808
 809         return 0;
 810 }
 811
 812 static void qxl_plane_cleanup_fb(struct drm_plane *plane,
 813                                  struct drm_plane_state *old_state)
 814 {
 815         struct drm_gem_object *obj;
 816         struct qxl_bo *user_bo;
 817
 818         if (!old_state->fb) {
 819                 /*
 820                  * we never executed prepare_fb, so there's nothing to
 821                  * unpin.
 822                  */
 823                 return;
 824         }
 825
 826         obj = old_state->fb->obj[0];
 827         user_bo = gem_to_qxl_bo(obj);
 828         qxl_bo_unpin(user_bo);
 829
 830         if (old_state->fb != plane->state->fb && user_bo->shadow) {
 831                 drm_gem_object_put_unlocked(&user_bo->shadow->tbo.base);
 832                 user_bo->shadow = NULL;
 833         }
 834 }
 835
 836 static const uint32_t qxl_cursor_plane_formats[] = {
 837         DRM_FORMAT_ARGB8888,
 838 };
 839
 840 static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
 841         .atomic_update = qxl_cursor_atomic_update,
 842         .atomic_disable = qxl_cursor_atomic_disable,
 843         .prepare_fb = qxl_plane_prepare_fb,
 844         .cleanup_fb = qxl_plane_cleanup_fb,
 845 };
 846
 847 static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
 848         .update_plane   = drm_atomic_helper_update_plane,
 849         .disable_plane  = drm_atomic_helper_disable_plane,
 850         .destroy        = drm_primary_helper_destroy,
 851         .reset          = drm_atomic_helper_plane_reset,
 852         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 853         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 854 };
 855
 856 static const uint32_t qxl_primary_plane_formats[] = {
 857         DRM_FORMAT_XRGB8888,
 858         DRM_FORMAT_ARGB8888,
 859 };
 860
 861 static const struct drm_plane_helper_funcs primary_helper_funcs = {
 862         .atomic_check = qxl_primary_atomic_check,
 863         .atomic_update = qxl_primary_atomic_update,
 864         .atomic_disable = qxl_primary_atomic_disable,
 865         .prepare_fb = qxl_plane_prepare_fb,
 866         .cleanup_fb = qxl_plane_cleanup_fb,
 867 };
 868
 869 static const struct drm_plane_funcs qxl_primary_plane_funcs = {
 870         .update_plane   = drm_atomic_helper_update_plane,
 871         .disable_plane  = drm_atomic_helper_disable_plane,
 872         .destroy        = drm_primary_helper_destroy,
 873         .reset          = drm_atomic_helper_plane_reset,
 874         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 875         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 876 };
 877
 878 static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
 879                                           unsigned int possible_crtcs,
 880                                           enum drm_plane_type type)
 881 {
 882         const struct drm_plane_helper_funcs *helper_funcs = NULL;
 883         struct drm_plane *plane;
 884         const struct drm_plane_funcs *funcs;
 885         const uint32_t *formats;
 886         int num_formats;
 887         int err;
 888
 889         if (type == DRM_PLANE_TYPE_PRIMARY) {
 890                 funcs = &qxl_primary_plane_funcs;
 891                 formats = qxl_primary_plane_formats;
 892                 num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
 893                 helper_funcs = &primary_helper_funcs;
 894         } else if (type == DRM_PLANE_TYPE_CURSOR) {
 895                 funcs = &qxl_cursor_plane_funcs;
 896                 formats = qxl_cursor_plane_formats;
 897                 helper_funcs = &qxl_cursor_helper_funcs;
 898                 num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
 899         } else {
 900                 return ERR_PTR(-EINVAL);
 901         }
 902
 903         plane = kzalloc(sizeof(*plane), GFP_KERNEL);
 904         if (!plane)
 905                 return ERR_PTR(-ENOMEM);
 906
 907         err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
 908                                        funcs, formats, num_formats,
 909                                        NULL, type, NULL);
 910         if (err)
 911                 goto free_plane;
 912
 913         drm_plane_helper_add(plane, helper_funcs);
 914
 915         return plane;
 916
 917 free_plane:
 918         kfree(plane);
 919         return ERR_PTR(-EINVAL);
 920 }
 921
 922 static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
 923 {
 924         struct qxl_crtc *qxl_crtc;
 925         struct drm_plane *primary, *cursor;
 926         struct qxl_device *qdev = to_qxl(dev);
 927         int r;
 928
 929         qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
 930         if (!qxl_crtc)
 931                 return -ENOMEM;
 932
 933         primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
 934         if (IS_ERR(primary)) {
 935                 r = -ENOMEM;
 936                 goto free_mem;
 937         }
 938
 939         cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
 940         if (IS_ERR(cursor)) {
 941                 r = -ENOMEM;
 942                 goto clean_primary;
 943         }
 944
 945         r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
 946                                       &qxl_crtc_funcs, NULL);
 947         if (r)
 948                 goto clean_cursor;
 949
 950         qxl_crtc->index = crtc_id;
 951         drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
 952         return 0;
 953
 954 clean_cursor:
 955         drm_plane_cleanup(cursor);
 956         kfree(cursor);
 957 clean_primary:
 958         drm_plane_cleanup(primary);
 959         kfree(primary);
 960 free_mem:
 961         kfree(qxl_crtc);
 962         return r;
 963 }
 964
 965 static int qxl_conn_get_modes(struct drm_connector *connector)
 966 {
 967         struct drm_device *dev = connector->dev;
 968         struct qxl_device *qdev = to_qxl(dev);
 969         struct qxl_output *output = drm_connector_to_qxl_output(connector);
 970         unsigned int pwidth = 1024;
 971         unsigned int pheight = 768;
 972         int ret = 0;
 973
 974         if (qdev->client_monitors_config) {
 975                 struct qxl_head *head;
 976                 head = &qdev->client_monitors_config->heads[output->index];
 977                 if (head->width)
 978                         pwidth = head->width;
 979                 if (head->height)
 980                         pheight = head->height;
 981         }
 982
 983         ret += drm_add_modes_noedid(connector, 8192, 8192);
 984         ret += qxl_add_extra_modes(connector);
 985         ret += qxl_add_monitors_config_modes(connector);
 986         drm_set_preferred_mode(connector, pwidth, pheight);
 987         return ret;
 988 }
 989
 990 static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
 991                                struct drm_display_mode *mode)
 992 {
 993         struct drm_device *ddev = connector->dev;
 994         struct qxl_device *qdev = to_qxl(ddev);
 995
 996         if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
 997                 return MODE_BAD;
 998
 999         return MODE_OK;
1000 }
1001
1002 static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1003 {
1004         struct qxl_output *qxl_output =
1005                 drm_connector_to_qxl_output(connector);
1006
1007         DRM_DEBUG("\n");
1008         return &qxl_output->enc;
1009 }
1010
1011 static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1012         .get_modes = qxl_conn_get_modes,
1013         .mode_valid = qxl_conn_mode_valid,
1014         .best_encoder = qxl_best_encoder,
1015 };
1016
1017 static enum drm_connector_status qxl_conn_detect(
1018                         struct drm_connector *connector,
1019                         bool force)
1020 {
1021         struct qxl_output *output =
1022                 drm_connector_to_qxl_output(connector);
1023         struct drm_device *ddev = connector->dev;
1024         struct qxl_device *qdev = to_qxl(ddev);
1025         bool connected = false;
1026
1027         /* The first monitor is always connected */
1028         if (!qdev->client_monitors_config) {
1029                 if (output->index == 0)
1030                         connected = true;
1031         } else
1032                 connected = qdev->client_monitors_config->count > output->index &&
1033                      qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1034
1035         DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1036
1037         return connected ? connector_status_connected
1038                          : connector_status_disconnected;
1039 }
1040
1041 static void qxl_conn_destroy(struct drm_connector *connector)
1042 {
1043         struct qxl_output *qxl_output =
1044                 drm_connector_to_qxl_output(connector);
1045
1046         drm_connector_unregister(connector);
1047         drm_connector_cleanup(connector);
1048         kfree(qxl_output);
1049 }
1050
1051 static const struct drm_connector_funcs qxl_connector_funcs = {
1052         .detect = qxl_conn_detect,
1053         .fill_modes = drm_helper_probe_single_connector_modes,
1054         .destroy = qxl_conn_destroy,
1055         .reset = drm_atomic_helper_connector_reset,
1056         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1057         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1058 };
1059
1060 static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1061 {
1062         if (qdev->hotplug_mode_update_property)
1063                 return 0;
1064
1065         qdev->hotplug_mode_update_property =
1066                 drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1067                                           "hotplug_mode_update", 0, 1);
1068
1069         return 0;
1070 }
1071
1072 static int qdev_output_init(struct drm_device *dev, int num_output)
1073 {
1074         struct qxl_device *qdev = to_qxl(dev);
1075         struct qxl_output *qxl_output;
1076         struct drm_connector *connector;
1077         struct drm_encoder *encoder;
1078         int ret;
1079
1080         qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1081         if (!qxl_output)
1082                 return -ENOMEM;
1083
1084         qxl_output->index = num_output;
1085
1086         connector = &qxl_output->base;
1087         encoder = &qxl_output->enc;
1088         drm_connector_init(dev, &qxl_output->base,
1089                            &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1090
1091         ret = drm_simple_encoder_init(dev, &qxl_output->enc,
1092                                       DRM_MODE_ENCODER_VIRTUAL);
1093         if (ret) {
1094                 drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
1095                         ret);
1096                 goto err_drm_connector_cleanup;
1097         }
1098
1099         /* we get HPD via client monitors config */
1100         connector->polled = DRM_CONNECTOR_POLL_HPD;
1101         encoder->possible_crtcs = 1 << num_output;
1102         drm_connector_attach_encoder(&qxl_output->base,
1103                                           &qxl_output->enc);
1104         drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1105
1106         drm_object_attach_property(&connector->base,
1107                                    qdev->hotplug_mode_update_property, 0);
1108         drm_object_attach_property(&connector->base,
1109                                    dev->mode_config.suggested_x_property, 0);
1110         drm_object_attach_property(&connector->base,
1111                                    dev->mode_config.suggested_y_property, 0);
1112         return 0;
1113
1114 err_drm_connector_cleanup:
1115         drm_connector_cleanup(&qxl_output->base);
1116         kfree(qxl_output);
1117         return ret;
1118 }
1119
1120 static struct drm_framebuffer *
1121 qxl_user_framebuffer_create(struct drm_device *dev,
1122                             struct drm_file *file_priv,
1123                             const struct drm_mode_fb_cmd2 *mode_cmd)
1124 {
1125         return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
1126                                             &qxl_fb_funcs);
1127 }
1128
1129 static const struct drm_mode_config_funcs qxl_mode_funcs = {
1130         .fb_create = qxl_user_framebuffer_create,
1131         .atomic_check = drm_atomic_helper_check,
1132         .atomic_commit = drm_atomic_helper_commit,
1133 };
1134
1135 int qxl_create_monitors_object(struct qxl_device *qdev)
1136 {
1137         int ret;
1138         struct drm_gem_object *gobj;
1139         int monitors_config_size = sizeof(struct qxl_monitors_config) +
1140                 qxl_num_crtc * sizeof(struct qxl_head);
1141
1142         ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1143                                     QXL_GEM_DOMAIN_VRAM,
1144                                     false, false, NULL, &gobj);
1145         if (ret) {
1146                 DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1147                 return -ENOMEM;
1148         }
1149         qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1150
1151         ret = qxl_bo_pin(qdev->monitors_config_bo);
1152         if (ret)
1153                 return ret;
1154
1155         qxl_bo_kmap(qdev->monitors_config_bo, NULL);
1156
1157         qdev->monitors_config = qdev->monitors_config_bo->kptr;
1158         qdev->ram_header->monitors_config =
1159                 qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1160
1161         memset(qdev->monitors_config, 0, monitors_config_size);
1162         qdev->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
1163                                    GFP_KERNEL);
1164         if (!qdev->dumb_heads) {
1165                 qxl_destroy_monitors_object(qdev);
1166                 return -ENOMEM;
1167         }
1168         return 0;
1169 }
1170
1171 int qxl_destroy_monitors_object(struct qxl_device *qdev)
1172 {
1173         int ret;
1174
1175         qdev->monitors_config = NULL;
1176         qdev->ram_header->monitors_config = 0;
1177
1178         qxl_bo_kunmap(qdev->monitors_config_bo);
1179         ret = qxl_bo_unpin(qdev->monitors_config_bo);
1180         if (ret)
1181                 return ret;
1182
1183         qxl_bo_unref(&qdev->monitors_config_bo);
1184         return 0;
1185 }
1186
1187 int qxl_modeset_init(struct qxl_device *qdev)
1188 {
1189         int i;
1190         int ret;
1191
1192         drm_mode_config_init(&qdev->ddev);
1193
1194         ret = qxl_create_monitors_object(qdev);
1195         if (ret)
1196                 return ret;
1197
1198         qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1199
1200         /* modes will be validated against the framebuffer size */
1201         qdev->ddev.mode_config.min_width = 0;
1202         qdev->ddev.mode_config.min_height = 0;
1203         qdev->ddev.mode_config.max_width = 8192;
1204         qdev->ddev.mode_config.max_height = 8192;
1205
1206         qdev->ddev.mode_config.fb_base = qdev->vram_base;
1207
1208         drm_mode_create_suggested_offset_properties(&qdev->ddev);
1209         qxl_mode_create_hotplug_mode_update_property(qdev);
1210
1211         for (i = 0 ; i < qxl_num_crtc; ++i) {
1212                 qdev_crtc_init(&qdev->ddev, i);
1213                 qdev_output_init(&qdev->ddev, i);
1214         }
1215
1216         qxl_display_read_client_monitors_config(qdev);
1217
1218         drm_mode_config_reset(&qdev->ddev);
1219         return 0;
1220 }
1221
1222 void qxl_modeset_fini(struct qxl_device *qdev)
1223 {
1224         qxl_destroy_monitors_object(qdev);
1225         drm_mode_config_cleanup(&qdev->ddev);
1226 }