drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2011-2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29 #include <drm/drm_plane_helper.h>
  30
  31
  32 #define vmw_crtc_to_sou(x) \
  33         container_of(x, struct vmw_screen_object_unit, base.crtc)
  34 #define vmw_encoder_to_sou(x) \
  35         container_of(x, struct vmw_screen_object_unit, base.encoder)
  36 #define vmw_connector_to_sou(x) \
  37         container_of(x, struct vmw_screen_object_unit, base.connector)
  38
  39 /**
  40  * struct vmw_kms_sou_surface_dirty - Closure structure for
  41  * blit surface to screen command.
  42  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
  43  * @left: Left side of bounding box.
  44  * @right: Right side of bounding box.
  45  * @top: Top side of bounding box.
  46  * @bottom: Bottom side of bounding box.
  47  * @dst_x: Difference between source clip rects and framebuffer coordinates.
  48  * @dst_y: Difference between source clip rects and framebuffer coordinates.
  49  * @sid: Surface id of surface to copy from.
  50  */
  51 struct vmw_kms_sou_surface_dirty {
  52         struct vmw_kms_dirty base;
  53         s32 left, right, top, bottom;
  54         s32 dst_x, dst_y;
  55         u32 sid;
  56 };
  57
  58 /*
  59  * SVGA commands that are used by this code. Please see the device headers
  60  * for explanation.
  61  */
  62 struct vmw_kms_sou_readback_blit {
  63         uint32 header;
  64         SVGAFifoCmdBlitScreenToGMRFB body;
  65 };
  66
  67 struct vmw_kms_sou_dmabuf_blit {
  68         uint32 header;
  69         SVGAFifoCmdBlitGMRFBToScreen body;
  70 };
  71
  72 struct vmw_kms_sou_dirty_cmd {
  73         SVGA3dCmdHeader header;
  74         SVGA3dCmdBlitSurfaceToScreen body;
  75 };
  76
  77 /**
  78  * Display unit using screen objects.
  79  */
  80 struct vmw_screen_object_unit {
  81         struct vmw_display_unit base;
  82
  83         unsigned long buffer_size; /**< Size of allocated buffer */
  84         struct vmw_dma_buffer *buffer; /**< Backing store buffer */
  85
  86         bool defined;
  87 };
  88
  89 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
  90 {
  91         vmw_du_cleanup(&sou->base);
  92         kfree(sou);
  93 }
  94
  95
  96 /*
  97  * Screen Object Display Unit CRTC functions
  98  */
  99
 100 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
 101 {
 102         vmw_sou_destroy(vmw_crtc_to_sou(crtc));
 103 }
 104
 105 /**
 106  * Send the fifo command to create a screen.
 107  */
 108 static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
 109                                struct vmw_screen_object_unit *sou,
 110                                uint32_t x, uint32_t y,
 111                                struct drm_display_mode *mode)
 112 {
 113         size_t fifo_size;
 114
 115         struct {
 116                 struct {
 117                         uint32_t cmdType;
 118                 } header;
 119                 SVGAScreenObject obj;
 120         } *cmd;
 121
 122         BUG_ON(!sou->buffer);
 123
 124         fifo_size = sizeof(*cmd);
 125         cmd = vmw_fifo_reserve(dev_priv, fifo_size);
 126         /* The hardware has hung, nothing we can do about it here. */
 127         if (unlikely(cmd == NULL)) {
 128                 DRM_ERROR("Fifo reserve failed.\n");
 129                 return -ENOMEM;
 130         }
 131
 132         memset(cmd, 0, fifo_size);
 133         cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
 134         cmd->obj.structSize = sizeof(SVGAScreenObject);
 135         cmd->obj.id = sou->base.unit;
 136         cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
 137                 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
 138         cmd->obj.size.width = mode->hdisplay;
 139         cmd->obj.size.height = mode->vdisplay;
 140         if (sou->base.is_implicit) {
 141                 cmd->obj.root.x = x;
 142                 cmd->obj.root.y = y;
 143         } else {
 144                 cmd->obj.root.x = sou->base.gui_x;
 145                 cmd->obj.root.y = sou->base.gui_y;
 146         }
 147
 148         /* Ok to assume that buffer is pinned in vram */
 149         vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
 150         cmd->obj.backingStore.pitch = mode->hdisplay * 4;
 151
 152         vmw_fifo_commit(dev_priv, fifo_size);
 153
 154         sou->defined = true;
 155
 156         return 0;
 157 }
 158
 159 /**
 160  * Send the fifo command to destroy a screen.
 161  */
 162 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
 163                                 struct vmw_screen_object_unit *sou)
 164 {
 165         size_t fifo_size;
 166         int ret;
 167
 168         struct {
 169                 struct {
 170                         uint32_t cmdType;
 171                 } header;
 172                 SVGAFifoCmdDestroyScreen body;
 173         } *cmd;
 174
 175         /* no need to do anything */
 176         if (unlikely(!sou->defined))
 177                 return 0;
 178
 179         fifo_size = sizeof(*cmd);
 180         cmd = vmw_fifo_reserve(dev_priv, fifo_size);
 181         /* the hardware has hung, nothing we can do about it here */
 182         if (unlikely(cmd == NULL)) {
 183                 DRM_ERROR("Fifo reserve failed.\n");
 184                 return -ENOMEM;
 185         }
 186
 187         memset(cmd, 0, fifo_size);
 188         cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
 189         cmd->body.screenId = sou->base.unit;
 190
 191         vmw_fifo_commit(dev_priv, fifo_size);
 192
 193         /* Force sync */
 194         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 195         if (unlikely(ret != 0))
 196                 DRM_ERROR("Failed to sync with HW");
 197         else
 198                 sou->defined = false;
 199
 200         return ret;
 201 }
 202
 203 /**
 204  * Free the backing store.
 205  */
 206 static void vmw_sou_backing_free(struct vmw_private *dev_priv,
 207                                  struct vmw_screen_object_unit *sou)
 208 {
 209         vmw_dmabuf_unreference(&sou->buffer);
 210         sou->buffer_size = 0;
 211 }
 212
 213 /**
 214  * Allocate the backing store for the buffer.
 215  */
 216 static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
 217                                  struct vmw_screen_object_unit *sou,
 218                                  unsigned long size)
 219 {
 220         int ret;
 221
 222         if (sou->buffer_size == size)
 223                 return 0;
 224
 225         if (sou->buffer)
 226                 vmw_sou_backing_free(dev_priv, sou);
 227
 228         sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
 229         if (unlikely(sou->buffer == NULL))
 230                 return -ENOMEM;
 231
 232         /* After we have alloced the backing store might not be able to
 233          * resume the overlays, this is preferred to failing to alloc.
 234          */
 235         vmw_overlay_pause_all(dev_priv);
 236         ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
 237                               &vmw_vram_ne_placement,
 238                               false, &vmw_dmabuf_bo_free);
 239         vmw_overlay_resume_all(dev_priv);
 240
 241         if (unlikely(ret != 0))
 242                 sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
 243         else
 244                 sou->buffer_size = size;
 245
 246         return ret;
 247 }
 248
 249 static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
 250 {
 251         struct vmw_private *dev_priv;
 252         struct vmw_screen_object_unit *sou;
 253         struct drm_connector *connector;
 254         struct drm_display_mode *mode;
 255         struct drm_encoder *encoder;
 256         struct vmw_framebuffer *vfb;
 257         struct drm_framebuffer *fb;
 258         struct drm_crtc *crtc;
 259         int ret = 0;
 260
 261         if (!set)
 262                 return -EINVAL;
 263
 264         if (!set->crtc)
 265                 return -EINVAL;
 266
 267         /* get the sou */
 268         crtc = set->crtc;
 269         sou = vmw_crtc_to_sou(crtc);
 270         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 271         dev_priv = vmw_priv(crtc->dev);
 272
 273         if (set->num_connectors > 1) {
 274                 DRM_ERROR("Too many connectors\n");
 275                 return -EINVAL;
 276         }
 277
 278         if (set->num_connectors == 1 &&
 279             set->connectors[0] != &sou->base.connector) {
 280                 DRM_ERROR("Connector doesn't match %p %p\n",
 281                         set->connectors[0], &sou->base.connector);
 282                 return -EINVAL;
 283         }
 284
 285         /* Only one active implicit frame-buffer at a time. */
 286         if (sou->base.is_implicit &&
 287             dev_priv->implicit_fb && vfb &&
 288             !(dev_priv->num_implicit == 1 &&
 289               sou->base.active_implicit) &&
 290             dev_priv->implicit_fb != vfb) {
 291                 DRM_ERROR("Multiple implicit framebuffers not supported.\n");
 292                 return -EINVAL;
 293         }
 294
 295         /* since they always map one to one these are safe */
 296         connector = &sou->base.connector;
 297         encoder = &sou->base.encoder;
 298
 299         /* should we turn the crtc off */
 300         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 301                 ret = vmw_sou_fifo_destroy(dev_priv, sou);
 302                 /* the hardware has hung don't do anything more */
 303                 if (unlikely(ret != 0))
 304                         return ret;
 305
 306                 connector->encoder = NULL;
 307                 encoder->crtc = NULL;
 308                 crtc->primary->fb = NULL;
 309                 crtc->x = 0;
 310                 crtc->y = 0;
 311                 crtc->enabled = false;
 312
 313                 vmw_kms_del_active(dev_priv, &sou->base);
 314
 315                 vmw_sou_backing_free(dev_priv, sou);
 316
 317                 return 0;
 318         }
 319
 320
 321         /* we now know we want to set a mode */
 322         mode = set->mode;
 323         fb = set->fb;
 324
 325         if (set->x + mode->hdisplay > fb->width ||
 326             set->y + mode->vdisplay > fb->height) {
 327                 DRM_ERROR("set outside of framebuffer\n");
 328                 return -EINVAL;
 329         }
 330
 331         vmw_svga_enable(dev_priv);
 332
 333         if (mode->hdisplay != crtc->mode.hdisplay ||
 334             mode->vdisplay != crtc->mode.vdisplay) {
 335                 /* no need to check if depth is different, because backing
 336                  * store depth is forced to 4 by the device.
 337                  */
 338
 339                 ret = vmw_sou_fifo_destroy(dev_priv, sou);
 340                 /* the hardware has hung don't do anything more */
 341                 if (unlikely(ret != 0))
 342                         return ret;
 343
 344                 vmw_sou_backing_free(dev_priv, sou);
 345         }
 346
 347         if (!sou->buffer) {
 348                 /* forced to depth 4 by the device */
 349                 size_t size = mode->hdisplay * mode->vdisplay * 4;
 350                 ret = vmw_sou_backing_alloc(dev_priv, sou, size);
 351                 if (unlikely(ret != 0))
 352                         return ret;
 353         }
 354
 355         ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
 356         if (unlikely(ret != 0)) {
 357                 /*
 358                  * We are in a bit of a situation here, the hardware has
 359                  * hung and we may or may not have a buffer hanging of
 360                  * the screen object, best thing to do is not do anything
 361                  * if we where defined, if not just turn the crtc of.
 362                  * Not what userspace wants but it needs to htfu.
 363                  */
 364                 if (sou->defined)
 365                         return ret;
 366
 367                 connector->encoder = NULL;
 368                 encoder->crtc = NULL;
 369                 crtc->primary->fb = NULL;
 370                 crtc->x = 0;
 371                 crtc->y = 0;
 372                 crtc->enabled = false;
 373
 374                 return ret;
 375         }
 376
 377         vmw_kms_add_active(dev_priv, &sou->base, vfb);
 378
 379         connector->encoder = encoder;
 380         encoder->crtc = crtc;
 381         crtc->mode = *mode;
 382         crtc->primary->fb = fb;
 383         crtc->x = set->x;
 384         crtc->y = set->y;
 385         crtc->enabled = true;
 386
 387         return 0;
 388 }
 389
 390 static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
 391                                   struct drm_framebuffer *fb,
 392                                   struct drm_pending_vblank_event *event,
 393                                   uint32_t flags)
 394 {
 395         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 396         struct drm_framebuffer *old_fb = crtc->primary->fb;
 397         struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb);
 398         struct vmw_fence_obj *fence = NULL;
 399         struct drm_vmw_rect vclips;
 400         int ret;
 401
 402         if (!vmw_kms_crtc_flippable(dev_priv, crtc))
 403                 return -EINVAL;
 404
 405         crtc->primary->fb = fb;
 406
 407         /* do a full screen dirty update */
 408         vclips.x = crtc->x;
 409         vclips.y = crtc->y;
 410         vclips.w = crtc->mode.hdisplay;
 411         vclips.h = crtc->mode.vdisplay;
 412
 413         if (vfb->dmabuf)
 414                 ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, vfb,
 415                                                   NULL, &vclips, 1, 1,
 416                                                   true, &fence);
 417         else
 418                 ret = vmw_kms_sou_do_surface_dirty(dev_priv, vfb,
 419                                                    NULL, &vclips, NULL,
 420                                                    0, 0, 1, 1, &fence);
 421
 422
 423         if (ret != 0)
 424                 goto out_no_fence;
 425         if (!fence) {
 426                 ret = -EINVAL;
 427                 goto out_no_fence;
 428         }
 429
 430         if (event) {
 431                 struct drm_file *file_priv = event->base.file_priv;
 432
 433                 ret = vmw_event_fence_action_queue(file_priv, fence,
 434                                                    &event->base,
 435                                                    &event->event.tv_sec,
 436                                                    &event->event.tv_usec,
 437                                                    true);
 438         }
 439
 440         /*
 441          * No need to hold on to this now. The only cleanup
 442          * we need to do if we fail is unref the fence.
 443          */
 444         vmw_fence_obj_unreference(&fence);
 445
 446         if (vmw_crtc_to_du(crtc)->is_implicit)
 447                 vmw_kms_update_implicit_fb(dev_priv, crtc);
 448
 449         return ret;
 450
 451 out_no_fence:
 452         crtc->primary->fb = old_fb;
 453         return ret;
 454 }
 455
 456 static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
 457         .cursor_set2 = vmw_du_crtc_cursor_set2,
 458         .cursor_move = vmw_du_crtc_cursor_move,
 459         .gamma_set = vmw_du_crtc_gamma_set,
 460         .destroy = vmw_sou_crtc_destroy,
 461         .set_config = vmw_sou_crtc_set_config,
 462         .page_flip = vmw_sou_crtc_page_flip,
 463 };
 464
 465 /*
 466  * Screen Object Display Unit encoder functions
 467  */
 468
 469 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
 470 {
 471         vmw_sou_destroy(vmw_encoder_to_sou(encoder));
 472 }
 473
 474 static const struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
 475         .destroy = vmw_sou_encoder_destroy,
 476 };
 477
 478 /*
 479  * Screen Object Display Unit connector functions
 480  */
 481
 482 static void vmw_sou_connector_destroy(struct drm_connector *connector)
 483 {
 484         vmw_sou_destroy(vmw_connector_to_sou(connector));
 485 }
 486
 487 static const struct drm_connector_funcs vmw_sou_connector_funcs = {
 488         .dpms = vmw_du_connector_dpms,
 489         .detect = vmw_du_connector_detect,
 490         .fill_modes = vmw_du_connector_fill_modes,
 491         .set_property = vmw_du_connector_set_property,
 492         .destroy = vmw_sou_connector_destroy,
 493 };
 494
 495 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
 496 {
 497         struct vmw_screen_object_unit *sou;
 498         struct drm_device *dev = dev_priv->dev;
 499         struct drm_connector *connector;
 500         struct drm_encoder *encoder;
 501         struct drm_crtc *crtc;
 502
 503         sou = kzalloc(sizeof(*sou), GFP_KERNEL);
 504         if (!sou)
 505                 return -ENOMEM;
 506
 507         sou->base.unit = unit;
 508         crtc = &sou->base.crtc;
 509         encoder = &sou->base.encoder;
 510         connector = &sou->base.connector;
 511
 512         sou->base.active_implicit = false;
 513         sou->base.pref_active = (unit == 0);
 514         sou->base.pref_width = dev_priv->initial_width;
 515         sou->base.pref_height = dev_priv->initial_height;
 516         sou->base.pref_mode = NULL;
 517         sou->base.is_implicit = true;
 518
 519         drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
 520                            DRM_MODE_CONNECTOR_VIRTUAL);
 521         connector->status = vmw_du_connector_detect(connector, true);
 522
 523         drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
 524                          DRM_MODE_ENCODER_VIRTUAL, NULL);
 525         drm_mode_connector_attach_encoder(connector, encoder);
 526         encoder->possible_crtcs = (1 << unit);
 527         encoder->possible_clones = 0;
 528
 529         (void) drm_connector_register(connector);
 530
 531         drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
 532
 533         drm_mode_crtc_set_gamma_size(crtc, 256);
 534
 535         drm_object_attach_property(&connector->base,
 536                                    dev->mode_config.dirty_info_property,
 537                                    1);
 538         drm_object_attach_property(&connector->base,
 539                                    dev_priv->hotplug_mode_update_property, 1);
 540         drm_object_attach_property(&connector->base,
 541                                    dev->mode_config.suggested_x_property, 0);
 542         drm_object_attach_property(&connector->base,
 543                                    dev->mode_config.suggested_y_property, 0);
 544
 545         return 0;
 546 }
 547
 548 int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
 549 {
 550         struct drm_device *dev = dev_priv->dev;
 551         int i, ret;
 552
 553         if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
 554                 DRM_INFO("Not using screen objects,"
 555                          " missing cap SCREEN_OBJECT_2\n");
 556                 return -ENOSYS;
 557         }
 558
 559         ret = -ENOMEM;
 560         dev_priv->num_implicit = 0;
 561         dev_priv->implicit_fb = NULL;
 562
 563         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
 564         if (unlikely(ret != 0))
 565                 return ret;
 566
 567         ret = drm_mode_create_dirty_info_property(dev);
 568         if (unlikely(ret != 0))
 569                 goto err_vblank_cleanup;
 570
 571         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
 572                 vmw_sou_init(dev_priv, i);
 573
 574         dev_priv->active_display_unit = vmw_du_screen_object;
 575
 576         DRM_INFO("Screen Objects Display Unit initialized\n");
 577
 578         return 0;
 579
 580 err_vblank_cleanup:
 581         drm_vblank_cleanup(dev);
 582         return ret;
 583 }
 584
 585 int vmw_kms_sou_close_display(struct vmw_private *dev_priv)
 586 {
 587         struct drm_device *dev = dev_priv->dev;
 588
 589         drm_vblank_cleanup(dev);
 590
 591         return 0;
 592 }
 593
 594 static int do_dmabuf_define_gmrfb(struct vmw_private *dev_priv,
 595                                   struct vmw_framebuffer *framebuffer)
 596 {
 597         struct vmw_dma_buffer *buf =
 598                 container_of(framebuffer, struct vmw_framebuffer_dmabuf,
 599                              base)->buffer;
 600         int depth = framebuffer->base.depth;
 601         struct {
 602                 uint32_t header;
 603                 SVGAFifoCmdDefineGMRFB body;
 604         } *cmd;
 605
 606         /* Emulate RGBA support, contrary to svga_reg.h this is not
 607          * supported by hosts. This is only a problem if we are reading
 608          * this value later and expecting what we uploaded back.
 609          */
 610         if (depth == 32)
 611                 depth = 24;
 612
 613         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 614         if (!cmd) {
 615                 DRM_ERROR("Out of fifo space for dirty framebuffer command.\n");
 616                 return -ENOMEM;
 617         }
 618
 619         cmd->header = SVGA_CMD_DEFINE_GMRFB;
 620         cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
 621         cmd->body.format.colorDepth = depth;
 622         cmd->body.format.reserved = 0;
 623         cmd->body.bytesPerLine = framebuffer->base.pitches[0];
 624         /* Buffer is reserved in vram or GMR */
 625         vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr);
 626         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 627
 628         return 0;
 629 }
 630
 631 /**
 632  * vmw_sou_surface_fifo_commit - Callback to fill in and submit a
 633  * blit surface to screen command.
 634  *
 635  * @dirty: The closure structure.
 636  *
 637  * Fills in the missing fields in the command, and translates the cliprects
 638  * to match the destination bounding box encoded.
 639  */
 640 static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 641 {
 642         struct vmw_kms_sou_surface_dirty *sdirty =
 643                 container_of(dirty, typeof(*sdirty), base);
 644         struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
 645         s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x;
 646         s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y;
 647         size_t region_size = dirty->num_hits * sizeof(SVGASignedRect);
 648         SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
 649         int i;
 650
 651         if (!dirty->num_hits) {
 652                 vmw_fifo_commit(dirty->dev_priv, 0);
 653                 return;
 654         }
 655
 656         cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
 657         cmd->header.size = sizeof(cmd->body) + region_size;
 658
 659         /*
 660          * Use the destination bounding box to specify destination - and
 661          * source bounding regions.
 662          */
 663         cmd->body.destRect.left = sdirty->left;
 664         cmd->body.destRect.right = sdirty->right;
 665         cmd->body.destRect.top = sdirty->top;
 666         cmd->body.destRect.bottom = sdirty->bottom;
 667
 668         cmd->body.srcRect.left = sdirty->left + trans_x;
 669         cmd->body.srcRect.right = sdirty->right + trans_x;
 670         cmd->body.srcRect.top = sdirty->top + trans_y;
 671         cmd->body.srcRect.bottom = sdirty->bottom + trans_y;
 672
 673         cmd->body.srcImage.sid = sdirty->sid;
 674         cmd->body.destScreenId = dirty->unit->unit;
 675
 676         /* Blits are relative to the destination rect. Translate. */
 677         for (i = 0; i < dirty->num_hits; ++i, ++blit) {
 678                 blit->left -= sdirty->left;
 679                 blit->right -= sdirty->left;
 680                 blit->top -= sdirty->top;
 681                 blit->bottom -= sdirty->top;
 682         }
 683
 684         vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd));
 685
 686         sdirty->left = sdirty->top = S32_MAX;
 687         sdirty->right = sdirty->bottom = S32_MIN;
 688 }
 689
 690 /**
 691  * vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect.
 692  *
 693  * @dirty: The closure structure
 694  *
 695  * Encodes a SVGASignedRect cliprect and updates the bounding box of the
 696  * BLIT_SURFACE_TO_SCREEN command.
 697  */
 698 static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty)
 699 {
 700         struct vmw_kms_sou_surface_dirty *sdirty =
 701                 container_of(dirty, typeof(*sdirty), base);
 702         struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
 703         SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
 704
 705         /* Destination rect. */
 706         blit += dirty->num_hits;
 707         blit->left = dirty->unit_x1;
 708         blit->top = dirty->unit_y1;
 709         blit->right = dirty->unit_x2;
 710         blit->bottom = dirty->unit_y2;
 711
 712         /* Destination bounding box */
 713         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 714         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 715         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 716         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 717
 718         dirty->num_hits++;
 719 }
 720
 721 /**
 722  * vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer
 723  *
 724  * @dev_priv: Pointer to the device private structure.
 725  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 726  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 727  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 728  * be NULL.
 729  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 730  * to @framebuffer will be used.
 731  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 732  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 733  * @num_clips: Number of clip rects in @clips.
 734  * @inc: Increment to use when looping over @clips.
 735  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 736  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 737  * case the device has already synchronized.
 738  *
 739  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 740  * interrupted.
 741  */
 742 int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv,
 743                                  struct vmw_framebuffer *framebuffer,
 744                                  struct drm_clip_rect *clips,
 745                                  struct drm_vmw_rect *vclips,
 746                                  struct vmw_resource *srf,
 747                                  s32 dest_x,
 748                                  s32 dest_y,
 749                                  unsigned num_clips, int inc,
 750                                  struct vmw_fence_obj **out_fence)
 751 {
 752         struct vmw_framebuffer_surface *vfbs =
 753                 container_of(framebuffer, typeof(*vfbs), base);
 754         struct vmw_kms_sou_surface_dirty sdirty;
 755         int ret;
 756
 757         if (!srf)
 758                 srf = &vfbs->surface->res;
 759
 760         ret = vmw_kms_helper_resource_prepare(srf, true);
 761         if (ret)
 762                 return ret;
 763
 764         sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
 765         sdirty.base.clip = vmw_sou_surface_clip;
 766         sdirty.base.dev_priv = dev_priv;
 767         sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) +
 768           sizeof(SVGASignedRect) * num_clips;
 769
 770         sdirty.sid = srf->id;
 771         sdirty.left = sdirty.top = S32_MAX;
 772         sdirty.right = sdirty.bottom = S32_MIN;
 773         sdirty.dst_x = dest_x;
 774         sdirty.dst_y = dest_y;
 775
 776         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 777                                    dest_x, dest_y, num_clips, inc,
 778                                    &sdirty.base);
 779         vmw_kms_helper_resource_finish(srf, out_fence);
 780
 781         return ret;
 782 }
 783
 784 /**
 785  * vmw_sou_dmabuf_fifo_commit - Callback to submit a set of readback clips.
 786  *
 787  * @dirty: The closure structure.
 788  *
 789  * Commits a previously built command buffer of readback clips.
 790  */
 791 static void vmw_sou_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
 792 {
 793         if (!dirty->num_hits) {
 794                 vmw_fifo_commit(dirty->dev_priv, 0);
 795                 return;
 796         }
 797
 798         vmw_fifo_commit(dirty->dev_priv,
 799                         sizeof(struct vmw_kms_sou_dmabuf_blit) *
 800                         dirty->num_hits);
 801 }
 802
 803 /**
 804  * vmw_sou_dmabuf_clip - Callback to encode a readback cliprect.
 805  *
 806  * @dirty: The closure structure
 807  *
 808  * Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
 809  */
 810 static void vmw_sou_dmabuf_clip(struct vmw_kms_dirty *dirty)
 811 {
 812         struct vmw_kms_sou_dmabuf_blit *blit = dirty->cmd;
 813
 814         blit += dirty->num_hits;
 815         blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
 816         blit->body.destScreenId = dirty->unit->unit;
 817         blit->body.srcOrigin.x = dirty->fb_x;
 818         blit->body.srcOrigin.y = dirty->fb_y;
 819         blit->body.destRect.left = dirty->unit_x1;
 820         blit->body.destRect.top = dirty->unit_y1;
 821         blit->body.destRect.right = dirty->unit_x2;
 822         blit->body.destRect.bottom = dirty->unit_y2;
 823         dirty->num_hits++;
 824 }
 825
 826 /**
 827  * vmw_kms_do_dmabuf_dirty - Dirty part of a dma-buffer backed framebuffer
 828  *
 829  * @dev_priv: Pointer to the device private structure.
 830  * @framebuffer: Pointer to the dma-buffer backed framebuffer.
 831  * @clips: Array of clip rects.
 832  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 833  * be NULL.
 834  * @num_clips: Number of clip rects in @clips.
 835  * @increment: Increment to use when looping over @clips.
 836  * @interruptible: Whether to perform waits interruptible if possible.
 837  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 838  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 839  * case the device has already synchronized.
 840  *
 841  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 842  * interrupted.
 843  */
 844 int vmw_kms_sou_do_dmabuf_dirty(struct vmw_private *dev_priv,
 845                                 struct vmw_framebuffer *framebuffer,
 846                                 struct drm_clip_rect *clips,
 847                                 struct drm_vmw_rect *vclips,
 848                                 unsigned num_clips, int increment,
 849                                 bool interruptible,
 850                                 struct vmw_fence_obj **out_fence)
 851 {
 852         struct vmw_dma_buffer *buf =
 853                 container_of(framebuffer, struct vmw_framebuffer_dmabuf,
 854                              base)->buffer;
 855         struct vmw_kms_dirty dirty;
 856         int ret;
 857
 858         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
 859                                             false);
 860         if (ret)
 861                 return ret;
 862
 863         ret = do_dmabuf_define_gmrfb(dev_priv, framebuffer);
 864         if (unlikely(ret != 0))
 865                 goto out_revert;
 866
 867         dirty.fifo_commit = vmw_sou_dmabuf_fifo_commit;
 868         dirty.clip = vmw_sou_dmabuf_clip;
 869         dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_dmabuf_blit) *
 870                 num_clips;
 871         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 872                                    0, 0, num_clips, increment, &dirty);
 873         vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL);
 874
 875         return ret;
 876
 877 out_revert:
 878         vmw_kms_helper_buffer_revert(buf);
 879
 880         return ret;
 881 }
 882
 883
 884 /**
 885  * vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips.
 886  *
 887  * @dirty: The closure structure.
 888  *
 889  * Commits a previously built command buffer of readback clips.
 890  */
 891 static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty)
 892 {
 893         if (!dirty->num_hits) {
 894                 vmw_fifo_commit(dirty->dev_priv, 0);
 895                 return;
 896         }
 897
 898         vmw_fifo_commit(dirty->dev_priv,
 899                         sizeof(struct vmw_kms_sou_readback_blit) *
 900                         dirty->num_hits);
 901 }
 902
 903 /**
 904  * vmw_sou_readback_clip - Callback to encode a readback cliprect.
 905  *
 906  * @dirty: The closure structure
 907  *
 908  * Encodes a BLIT_SCREEN_TO_GMRFB cliprect.
 909  */
 910 static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty)
 911 {
 912         struct vmw_kms_sou_readback_blit *blit = dirty->cmd;
 913
 914         blit += dirty->num_hits;
 915         blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
 916         blit->body.srcScreenId = dirty->unit->unit;
 917         blit->body.destOrigin.x = dirty->fb_x;
 918         blit->body.destOrigin.y = dirty->fb_y;
 919         blit->body.srcRect.left = dirty->unit_x1;
 920         blit->body.srcRect.top = dirty->unit_y1;
 921         blit->body.srcRect.right = dirty->unit_x2;
 922         blit->body.srcRect.bottom = dirty->unit_y2;
 923         dirty->num_hits++;
 924 }
 925
 926 /**
 927  * vmw_kms_sou_readback - Perform a readback from the screen object system to
 928  * a dma-buffer backed framebuffer.
 929  *
 930  * @dev_priv: Pointer to the device private structure.
 931  * @file_priv: Pointer to a struct drm_file identifying the caller.
 932  * Must be set to NULL if @user_fence_rep is NULL.
 933  * @vfb: Pointer to the dma-buffer backed framebuffer.
 934  * @user_fence_rep: User-space provided structure for fence information.
 935  * Must be set to non-NULL if @file_priv is non-NULL.
 936  * @vclips: Array of clip rects.
 937  * @num_clips: Number of clip rects in @vclips.
 938  *
 939  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 940  * interrupted.
 941  */
 942 int vmw_kms_sou_readback(struct vmw_private *dev_priv,
 943                          struct drm_file *file_priv,
 944                          struct vmw_framebuffer *vfb,
 945                          struct drm_vmw_fence_rep __user *user_fence_rep,
 946                          struct drm_vmw_rect *vclips,
 947                          uint32_t num_clips)
 948 {
 949         struct vmw_dma_buffer *buf =
 950                 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
 951         struct vmw_kms_dirty dirty;
 952         int ret;
 953
 954         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false);
 955         if (ret)
 956                 return ret;
 957
 958         ret = do_dmabuf_define_gmrfb(dev_priv, vfb);
 959         if (unlikely(ret != 0))
 960                 goto out_revert;
 961
 962         dirty.fifo_commit = vmw_sou_readback_fifo_commit;
 963         dirty.clip = vmw_sou_readback_clip;
 964         dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
 965                 num_clips;
 966         ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
 967                                    0, 0, num_clips, 1, &dirty);
 968         vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
 969                                      user_fence_rep);
 970
 971         return ret;
 972
 973 out_revert:
 974         vmw_kms_helper_buffer_revert(buf);
 975
 976         return ret;
 977 }