drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 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
  30 #define VMWGFX_LDU_NUM_DU 8
  31
  32 #define vmw_crtc_to_ldu(x) \
  33         container_of(x, struct vmw_legacy_display_unit, base.crtc)
  34 #define vmw_encoder_to_ldu(x) \
  35         container_of(x, struct vmw_legacy_display_unit, base.encoder)
  36 #define vmw_connector_to_ldu(x) \
  37         container_of(x, struct vmw_legacy_display_unit, base.connector)
  38
  39 struct vmw_legacy_display {
  40         struct list_head active;
  41
  42         unsigned num_active;
  43         unsigned last_num_active;
  44
  45         struct vmw_framebuffer *fb;
  46 };
  47
  48 /**
  49  * Display unit using the legacy register interface.
  50  */
  51 struct vmw_legacy_display_unit {
  52         struct vmw_display_unit base;
  53
  54         unsigned pref_width;
  55         unsigned pref_height;
  56         bool pref_active;
  57         struct drm_display_mode *pref_mode;
  58
  59         struct list_head active;
  60 };
  61
  62 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  63 {
  64         list_del_init(&ldu->active);
  65         vmw_display_unit_cleanup(&ldu->base);
  66         kfree(ldu);
  67 }
  68
  69
  70 /*
  71  * Legacy Display Unit CRTC functions
  72  */
  73
  74 static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
  75 {
  76 }
  77
  78 static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
  79 {
  80 }
  81
  82 static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
  83                                    u16 *r, u16 *g, u16 *b,
  84                                    uint32_t start, uint32_t size)
  85 {
  86 }
  87
  88 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  89 {
  90         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  91 }
  92
  93 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  94 {
  95         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  96         struct vmw_legacy_display_unit *entry;
  97         struct drm_framebuffer *fb = NULL;
  98         struct drm_crtc *crtc = NULL;
  99         int i = 0;
 100
 101         /* If there is no display topology the host just assumes
 102          * that the guest will set the same layout as the host.
 103          */
 104         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
 105                 int w = 0, h = 0;
 106                 list_for_each_entry(entry, &lds->active, active) {
 107                         crtc = &entry->base.crtc;
 108                         w = max(w, crtc->x + crtc->mode.hdisplay);
 109                         h = max(h, crtc->y + crtc->mode.vdisplay);
 110                         i++;
 111                 }
 112
 113                 if (crtc == NULL)
 114                         return 0;
 115                 fb = entry->base.crtc.fb;
 116
 117                 vmw_kms_write_svga(dev_priv, w, h, fb->pitch,
 118                                    fb->bits_per_pixel, fb->depth);
 119
 120                 return 0;
 121         }
 122
 123         if (!list_empty(&lds->active)) {
 124                 entry = list_entry(lds->active.next, typeof(*entry), active);
 125                 fb = entry->base.crtc.fb;
 126
 127                 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch,
 128                                    fb->bits_per_pixel, fb->depth);
 129         }
 130
 131         /* Make sure we always show something. */
 132         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
 133                   lds->num_active ? lds->num_active : 1);
 134
 135         i = 0;
 136         list_for_each_entry(entry, &lds->active, active) {
 137                 crtc = &entry->base.crtc;
 138
 139                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 140                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 141                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 142                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 143                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 144                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 145                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 146
 147                 i++;
 148         }
 149
 150         BUG_ON(i != lds->num_active);
 151
 152         lds->last_num_active = lds->num_active;
 153
 154         return 0;
 155 }
 156
 157 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 158                               struct vmw_legacy_display_unit *ldu)
 159 {
 160         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 161         if (list_empty(&ldu->active))
 162                 return 0;
 163
 164         /* Must init otherwise list_empty(&ldu->active) will not work. */
 165         list_del_init(&ldu->active);
 166         if (--(ld->num_active) == 0) {
 167                 BUG_ON(!ld->fb);
 168                 if (ld->fb->unpin)
 169                         ld->fb->unpin(ld->fb);
 170                 ld->fb = NULL;
 171         }
 172
 173         return 0;
 174 }
 175
 176 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 177                               struct vmw_legacy_display_unit *ldu,
 178                               struct vmw_framebuffer *vfb)
 179 {
 180         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 181         struct vmw_legacy_display_unit *entry;
 182         struct list_head *at;
 183
 184         BUG_ON(!ld->num_active && ld->fb);
 185         if (vfb != ld->fb) {
 186                 if (ld->fb && ld->fb->unpin)
 187                         ld->fb->unpin(ld->fb);
 188                 if (vfb->pin)
 189                         vfb->pin(vfb);
 190                 ld->fb = vfb;
 191         }
 192
 193         if (!list_empty(&ldu->active))
 194                 return 0;
 195
 196         at = &ld->active;
 197         list_for_each_entry(entry, &ld->active, active) {
 198                 if (entry->base.unit > ldu->base.unit)
 199                         break;
 200
 201                 at = &entry->active;
 202         }
 203
 204         list_add(&ldu->active, at);
 205
 206         ld->num_active++;
 207
 208         return 0;
 209 }
 210
 211 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
 212 {
 213         struct vmw_private *dev_priv;
 214         struct vmw_legacy_display_unit *ldu;
 215         struct drm_connector *connector;
 216         struct drm_display_mode *mode;
 217         struct drm_encoder *encoder;
 218         struct vmw_framebuffer *vfb;
 219         struct drm_framebuffer *fb;
 220         struct drm_crtc *crtc;
 221
 222         if (!set)
 223                 return -EINVAL;
 224
 225         if (!set->crtc)
 226                 return -EINVAL;
 227
 228         /* get the ldu */
 229         crtc = set->crtc;
 230         ldu = vmw_crtc_to_ldu(crtc);
 231         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 232         dev_priv = vmw_priv(crtc->dev);
 233
 234         if (set->num_connectors > 1) {
 235                 DRM_ERROR("to many connectors\n");
 236                 return -EINVAL;
 237         }
 238
 239         if (set->num_connectors == 1 &&
 240             set->connectors[0] != &ldu->base.connector) {
 241                 DRM_ERROR("connector doesn't match %p %p\n",
 242                         set->connectors[0], &ldu->base.connector);
 243                 return -EINVAL;
 244         }
 245
 246         /* ldu only supports one fb active at the time */
 247         if (dev_priv->ldu_priv->fb && vfb &&
 248             !(dev_priv->ldu_priv->num_active == 1 &&
 249               !list_empty(&ldu->active)) &&
 250             dev_priv->ldu_priv->fb != vfb) {
 251                 DRM_ERROR("Multiple framebuffers not supported\n");
 252                 return -EINVAL;
 253         }
 254
 255         /* since they always map one to one these are safe */
 256         connector = &ldu->base.connector;
 257         encoder = &ldu->base.encoder;
 258
 259         /* should we turn the crtc off? */
 260         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 261
 262                 connector->encoder = NULL;
 263                 encoder->crtc = NULL;
 264                 crtc->fb = NULL;
 265
 266                 vmw_ldu_del_active(dev_priv, ldu);
 267
 268                 vmw_ldu_commit_list(dev_priv);
 269
 270                 return 0;
 271         }
 272
 273
 274         /* we now know we want to set a mode */
 275         mode = set->mode;
 276         fb = set->fb;
 277
 278         if (set->x + mode->hdisplay > fb->width ||
 279             set->y + mode->vdisplay > fb->height) {
 280                 DRM_ERROR("set outside of framebuffer\n");
 281                 return -EINVAL;
 282         }
 283
 284         vmw_fb_off(dev_priv);
 285
 286         crtc->fb = fb;
 287         encoder->crtc = crtc;
 288         connector->encoder = encoder;
 289         crtc->x = set->x;
 290         crtc->y = set->y;
 291         crtc->mode = *mode;
 292
 293         vmw_ldu_add_active(dev_priv, ldu, vfb);
 294
 295         vmw_ldu_commit_list(dev_priv);
 296
 297         return 0;
 298 }
 299
 300 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 301         .save = vmw_ldu_crtc_save,
 302         .restore = vmw_ldu_crtc_restore,
 303         .cursor_set = vmw_du_crtc_cursor_set,
 304         .cursor_move = vmw_du_crtc_cursor_move,
 305         .gamma_set = vmw_ldu_crtc_gamma_set,
 306         .destroy = vmw_ldu_crtc_destroy,
 307         .set_config = vmw_ldu_crtc_set_config,
 308 };
 309
 310 /*
 311  * Legacy Display Unit encoder functions
 312  */
 313
 314 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 315 {
 316         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 317 }
 318
 319 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 320         .destroy = vmw_ldu_encoder_destroy,
 321 };
 322
 323 /*
 324  * Legacy Display Unit connector functions
 325  */
 326
 327 static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
 328 {
 329 }
 330
 331 static void vmw_ldu_connector_save(struct drm_connector *connector)
 332 {
 333 }
 334
 335 static void vmw_ldu_connector_restore(struct drm_connector *connector)
 336 {
 337 }
 338
 339 static enum drm_connector_status
 340         vmw_ldu_connector_detect(struct drm_connector *connector,
 341                                  bool force)
 342 {
 343         if (vmw_connector_to_ldu(connector)->pref_active)
 344                 return connector_status_connected;
 345         return connector_status_disconnected;
 346 }
 347
 348 static const struct drm_display_mode vmw_ldu_connector_builtin[] = {
 349         /* 640x480@60Hz */
 350         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
 351                    752, 800, 0, 480, 489, 492, 525, 0,
 352                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 353         /* 800x600@60Hz */
 354         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
 355                    968, 1056, 0, 600, 601, 605, 628, 0,
 356                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 357         /* 1024x768@60Hz */
 358         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
 359                    1184, 1344, 0, 768, 771, 777, 806, 0,
 360                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 361         /* 1152x864@75Hz */
 362         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
 363                    1344, 1600, 0, 864, 865, 868, 900, 0,
 364                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 365         /* 1280x768@60Hz */
 366         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
 367                    1472, 1664, 0, 768, 771, 778, 798, 0,
 368                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 369         /* 1280x800@60Hz */
 370         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
 371                    1480, 1680, 0, 800, 803, 809, 831, 0,
 372                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
 373         /* 1280x960@60Hz */
 374         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
 375                    1488, 1800, 0, 960, 961, 964, 1000, 0,
 376                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 377         /* 1280x1024@60Hz */
 378         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
 379                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 380                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 381         /* 1360x768@60Hz */
 382         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
 383                    1536, 1792, 0, 768, 771, 777, 795, 0,
 384                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 385         /* 1440x1050@60Hz */
 386         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
 387                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
 388                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 389         /* 1440x900@60Hz */
 390         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
 391                    1672, 1904, 0, 900, 903, 909, 934, 0,
 392                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 393         /* 1600x1200@60Hz */
 394         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
 395                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
 396                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 397         /* 1680x1050@60Hz */
 398         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
 399                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
 400                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 401         /* 1792x1344@60Hz */
 402         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
 403                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
 404                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 405         /* 1853x1392@60Hz */
 406         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
 407                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
 408                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 409         /* 1920x1200@60Hz */
 410         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
 411                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
 412                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 413         /* 1920x1440@60Hz */
 414         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
 415                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
 416                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 417         /* 2560x1600@60Hz */
 418         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
 419                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
 420                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 421         /* Terminate */
 422         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
 423 };
 424
 425 static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
 426                                         uint32_t max_width, uint32_t max_height)
 427 {
 428         struct vmw_legacy_display_unit *ldu = vmw_connector_to_ldu(connector);
 429         struct drm_device *dev = connector->dev;
 430         struct vmw_private *dev_priv = vmw_priv(dev);
 431         struct drm_display_mode *mode = NULL;
 432         struct drm_display_mode prefmode = { DRM_MODE("preferred",
 433                 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 434                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 435                 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
 436         };
 437         int i;
 438
 439         /* Add preferred mode */
 440         {
 441                 mode = drm_mode_duplicate(dev, &prefmode);
 442                 if (!mode)
 443                         return 0;
 444                 mode->hdisplay = ldu->pref_width;
 445                 mode->vdisplay = ldu->pref_height;
 446                 mode->vrefresh = drm_mode_vrefresh(mode);
 447                 if (vmw_kms_validate_mode_vram(dev_priv, mode->hdisplay * 2,
 448                                                mode->vdisplay)) {
 449                         drm_mode_probed_add(connector, mode);
 450
 451                         if (ldu->pref_mode) {
 452                                 list_del_init(&ldu->pref_mode->head);
 453                                 drm_mode_destroy(dev, ldu->pref_mode);
 454                         }
 455
 456                         ldu->pref_mode = mode;
 457                 }
 458         }
 459
 460         for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
 461                 const struct drm_display_mode *bmode;
 462
 463                 bmode = &vmw_ldu_connector_builtin[i];
 464                 if (bmode->hdisplay > max_width ||
 465                     bmode->vdisplay > max_height)
 466                         continue;
 467
 468                 if (!vmw_kms_validate_mode_vram(dev_priv, bmode->hdisplay * 2,
 469                                                 bmode->vdisplay))
 470                         continue;
 471
 472                 mode = drm_mode_duplicate(dev, bmode);
 473                 if (!mode)
 474                         return 0;
 475                 mode->vrefresh = drm_mode_vrefresh(mode);
 476
 477                 drm_mode_probed_add(connector, mode);
 478         }
 479
 480         drm_mode_connector_list_update(connector);
 481
 482         return 1;
 483 }
 484
 485 static int vmw_ldu_connector_set_property(struct drm_connector *connector,
 486                                           struct drm_property *property,
 487                                           uint64_t val)
 488 {
 489         return 0;
 490 }
 491
 492 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 493 {
 494         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 495 }
 496
 497 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
 498         .dpms = vmw_ldu_connector_dpms,
 499         .save = vmw_ldu_connector_save,
 500         .restore = vmw_ldu_connector_restore,
 501         .detect = vmw_ldu_connector_detect,
 502         .fill_modes = vmw_ldu_connector_fill_modes,
 503         .set_property = vmw_ldu_connector_set_property,
 504         .destroy = vmw_ldu_connector_destroy,
 505 };
 506
 507 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 508 {
 509         struct vmw_legacy_display_unit *ldu;
 510         struct drm_device *dev = dev_priv->dev;
 511         struct drm_connector *connector;
 512         struct drm_encoder *encoder;
 513         struct drm_crtc *crtc;
 514
 515         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 516         if (!ldu)
 517                 return -ENOMEM;
 518
 519         ldu->base.unit = unit;
 520         crtc = &ldu->base.crtc;
 521         encoder = &ldu->base.encoder;
 522         connector = &ldu->base.connector;
 523
 524         INIT_LIST_HEAD(&ldu->active);
 525
 526         ldu->pref_active = (unit == 0);
 527         ldu->pref_width = 800;
 528         ldu->pref_height = 600;
 529         ldu->pref_mode = NULL;
 530
 531         drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 532                            DRM_MODE_CONNECTOR_LVDS);
 533         connector->status = vmw_ldu_connector_detect(connector, true);
 534
 535         drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 536                          DRM_MODE_ENCODER_LVDS);
 537         drm_mode_connector_attach_encoder(connector, encoder);
 538         encoder->possible_crtcs = (1 << unit);
 539         encoder->possible_clones = 0;
 540
 541         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 542
 543         drm_connector_attach_property(connector,
 544                                       dev->mode_config.dirty_info_property,
 545                                       1);
 546
 547         return 0;
 548 }
 549
 550 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
 551 {
 552         struct drm_device *dev = dev_priv->dev;
 553         int i;
 554         int ret;
 555
 556         if (dev_priv->ldu_priv) {
 557                 DRM_INFO("ldu system already on\n");
 558                 return -EINVAL;
 559         }
 560
 561         dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
 562
 563         if (!dev_priv->ldu_priv)
 564                 return -ENOMEM;
 565
 566         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 567         dev_priv->ldu_priv->num_active = 0;
 568         dev_priv->ldu_priv->last_num_active = 0;
 569         dev_priv->ldu_priv->fb = NULL;
 570
 571         drm_mode_create_dirty_info_property(dev_priv->dev);
 572
 573         if (dev_priv->capabilities & SVGA_CAP_MULTIMON) {
 574                 for (i = 0; i < VMWGFX_LDU_NUM_DU; ++i)
 575                         vmw_ldu_init(dev_priv, i);
 576                 ret = drm_vblank_init(dev, VMWGFX_LDU_NUM_DU);
 577         } else {
 578                 /* for old hardware without multimon only enable one display */
 579                 vmw_ldu_init(dev_priv, 0);
 580                 ret = drm_vblank_init(dev, 1);
 581         }
 582
 583         return ret;
 584 }
 585
 586 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
 587 {
 588         struct drm_device *dev = dev_priv->dev;
 589
 590         drm_vblank_cleanup(dev);
 591         if (!dev_priv->ldu_priv)
 592                 return -ENOSYS;
 593
 594         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 595
 596         kfree(dev_priv->ldu_priv);
 597
 598         return 0;
 599 }
 600
 601 int vmw_kms_ldu_update_layout(struct vmw_private *dev_priv, unsigned num,
 602                               struct drm_vmw_rect *rects)
 603 {
 604         struct drm_device *dev = dev_priv->dev;
 605         struct vmw_legacy_display_unit *ldu;
 606         struct drm_connector *con;
 607         int i;
 608
 609         mutex_lock(&dev->mode_config.mutex);
 610
 611 #if 0
 612         DRM_INFO("%s: new layout ", __func__);
 613         for (i = 0; i < (int)num; i++)
 614                 DRM_INFO("(%i, %i %ux%u) ", rects[i].x, rects[i].y,
 615                          rects[i].w, rects[i].h);
 616         DRM_INFO("\n");
 617 #else
 618         (void)i;
 619 #endif
 620
 621         list_for_each_entry(con, &dev->mode_config.connector_list, head) {
 622                 ldu = vmw_connector_to_ldu(con);
 623                 if (num > ldu->base.unit) {
 624                         ldu->pref_width = rects[ldu->base.unit].w;
 625                         ldu->pref_height = rects[ldu->base.unit].h;
 626                         ldu->pref_active = true;
 627                 } else {
 628                         ldu->pref_width = 800;
 629                         ldu->pref_height = 600;
 630                         ldu->pref_active = false;
 631                 }
 632                 con->status = vmw_ldu_connector_detect(con, true);
 633         }
 634
 635         mutex_unlock(&dev->mode_config.mutex);
 636
 637         return 0;
 638 }