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 vmw_crtc_to_ldu(x) \
  31         container_of(x, struct vmw_legacy_display_unit, base.crtc)
  32 #define vmw_encoder_to_ldu(x) \
  33         container_of(x, struct vmw_legacy_display_unit, base.encoder)
  34 #define vmw_connector_to_ldu(x) \
  35         container_of(x, struct vmw_legacy_display_unit, base.connector)
  36
  37 struct vmw_legacy_display {
  38         struct list_head active;
  39
  40         unsigned num_active;
  41
  42         struct vmw_framebuffer *fb;
  43 };
  44
  45 /**
  46  * Display unit using the legacy register interface.
  47  */
  48 struct vmw_legacy_display_unit {
  49         struct vmw_display_unit base;
  50
  51         struct list_head active;
  52
  53         unsigned unit;
  54 };
  55
  56 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
  57 {
  58         list_del_init(&ldu->active);
  59         vmw_display_unit_cleanup(&ldu->base);
  60         kfree(ldu);
  61 }
  62
  63
  64 /*
  65  * Legacy Display Unit CRTC functions
  66  */
  67
  68 static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
  69 {
  70 }
  71
  72 static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
  73 {
  74 }
  75
  76 static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
  77                                    u16 *r, u16 *g, u16 *b,
  78                                    uint32_t size)
  79 {
  80 }
  81
  82 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
  83 {
  84         vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
  85 }
  86
  87 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
  88 {
  89         struct vmw_legacy_display *lds = dev_priv->ldu_priv;
  90         struct vmw_legacy_display_unit *entry;
  91         struct drm_crtc *crtc;
  92         int i = 0;
  93
  94         /* to stop the screen from changing size on resize */
  95         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 0);
  96         for (i = 0; i < lds->num_active; i++) {
  97                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
  98                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
  99                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
 100                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
 101                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
 102                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
 103                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 104         }
 105
 106         /* Now set the mode */
 107         vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, lds->num_active);
 108         i = 0;
 109         list_for_each_entry(entry, &lds->active, active) {
 110                 crtc = &entry->base.crtc;
 111
 112                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
 113                 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
 114                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
 115                 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
 116                 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
 117                 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
 118                 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
 119
 120                 i++;
 121         }
 122
 123         return 0;
 124 }
 125
 126 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
 127                               struct vmw_legacy_display_unit *ldu)
 128 {
 129         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 130         if (list_empty(&ldu->active))
 131                 return 0;
 132
 133         /* Must init otherwise list_empty(&ldu->active) will not work. */
 134         list_del_init(&ldu->active);
 135         if (--(ld->num_active) == 0) {
 136                 BUG_ON(!ld->fb);
 137                 if (ld->fb->unpin)
 138                         ld->fb->unpin(ld->fb);
 139                 ld->fb = NULL;
 140         }
 141
 142         return 0;
 143 }
 144
 145 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
 146                               struct vmw_legacy_display_unit *ldu,
 147                               struct vmw_framebuffer *vfb)
 148 {
 149         struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
 150         struct vmw_legacy_display_unit *entry;
 151         struct list_head *at;
 152
 153         BUG_ON(!ld->num_active && ld->fb);
 154         if (vfb != ld->fb) {
 155                 if (ld->fb && ld->fb->unpin)
 156                         ld->fb->unpin(ld->fb);
 157                 if (vfb->pin)
 158                         vfb->pin(vfb);
 159                 ld->fb = vfb;
 160         }
 161
 162         if (!list_empty(&ldu->active))
 163                 return 0;
 164
 165         at = &ld->active;
 166         list_for_each_entry(entry, &ld->active, active) {
 167                 if (entry->unit > ldu->unit)
 168                         break;
 169
 170                 at = &entry->active;
 171         }
 172
 173         list_add(&ldu->active, at);
 174
 175         ld->num_active++;
 176
 177         return 0;
 178 }
 179
 180 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
 181 {
 182         struct vmw_private *dev_priv;
 183         struct vmw_legacy_display_unit *ldu;
 184         struct drm_connector *connector;
 185         struct drm_display_mode *mode;
 186         struct drm_encoder *encoder;
 187         struct vmw_framebuffer *vfb;
 188         struct drm_framebuffer *fb;
 189         struct drm_crtc *crtc;
 190
 191         if (!set)
 192                 return -EINVAL;
 193
 194         if (!set->crtc)
 195                 return -EINVAL;
 196
 197         /* get the ldu */
 198         crtc = set->crtc;
 199         ldu = vmw_crtc_to_ldu(crtc);
 200         vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
 201         dev_priv = vmw_priv(crtc->dev);
 202
 203         if (set->num_connectors > 1) {
 204                 DRM_ERROR("to many connectors\n");
 205                 return -EINVAL;
 206         }
 207
 208         if (set->num_connectors == 1 &&
 209             set->connectors[0] != &ldu->base.connector) {
 210                 DRM_ERROR("connector doesn't match %p %p\n",
 211                         set->connectors[0], &ldu->base.connector);
 212                 return -EINVAL;
 213         }
 214
 215         /* ldu only supports one fb active at the time */
 216         if (dev_priv->ldu_priv->fb && vfb &&
 217             !(dev_priv->ldu_priv->num_active == 1 &&
 218               !list_empty(&ldu->active)) &&
 219             dev_priv->ldu_priv->fb != vfb) {
 220                 DRM_ERROR("Multiple framebuffers not supported\n");
 221                 return -EINVAL;
 222         }
 223
 224         /* since they always map one to one these are safe */
 225         connector = &ldu->base.connector;
 226         encoder = &ldu->base.encoder;
 227
 228         /* should we turn the crtc off? */
 229         if (set->num_connectors == 0 || !set->mode || !set->fb) {
 230
 231                 connector->encoder = NULL;
 232                 encoder->crtc = NULL;
 233                 crtc->fb = NULL;
 234
 235                 vmw_ldu_del_active(dev_priv, ldu);
 236
 237                 vmw_ldu_commit_list(dev_priv);
 238
 239                 return 0;
 240         }
 241
 242
 243         /* we now know we want to set a mode */
 244         mode = set->mode;
 245         fb = set->fb;
 246
 247         if (set->x + mode->hdisplay > fb->width ||
 248             set->y + mode->vdisplay > fb->height) {
 249                 DRM_ERROR("set outside of framebuffer\n");
 250                 return -EINVAL;
 251         }
 252
 253         vmw_fb_off(dev_priv);
 254
 255         crtc->fb = fb;
 256         encoder->crtc = crtc;
 257         connector->encoder = encoder;
 258         crtc->x = set->x;
 259         crtc->y = set->y;
 260         crtc->mode = *mode;
 261
 262         vmw_ldu_add_active(dev_priv, ldu, vfb);
 263
 264         vmw_ldu_commit_list(dev_priv);
 265
 266         return 0;
 267 }
 268
 269 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
 270         .save = vmw_ldu_crtc_save,
 271         .restore = vmw_ldu_crtc_restore,
 272         .cursor_set = vmw_du_crtc_cursor_set,
 273         .cursor_move = vmw_du_crtc_cursor_move,
 274         .gamma_set = vmw_ldu_crtc_gamma_set,
 275         .destroy = vmw_ldu_crtc_destroy,
 276         .set_config = vmw_ldu_crtc_set_config,
 277 };
 278
 279 /*
 280  * Legacy Display Unit encoder functions
 281  */
 282
 283 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
 284 {
 285         vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
 286 }
 287
 288 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
 289         .destroy = vmw_ldu_encoder_destroy,
 290 };
 291
 292 /*
 293  * Legacy Display Unit connector functions
 294  */
 295
 296 static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
 297 {
 298 }
 299
 300 static void vmw_ldu_connector_save(struct drm_connector *connector)
 301 {
 302 }
 303
 304 static void vmw_ldu_connector_restore(struct drm_connector *connector)
 305 {
 306 }
 307
 308 static enum drm_connector_status
 309         vmw_ldu_connector_detect(struct drm_connector *connector)
 310 {
 311         /* XXX vmwctrl should control connection status */
 312         if (vmw_connector_to_ldu(connector)->base.unit == 0)
 313                 return connector_status_connected;
 314         return connector_status_disconnected;
 315 }
 316
 317 static struct drm_display_mode vmw_ldu_connector_builtin[] = {
 318         /* 640x480@60Hz */
 319         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
 320                    752, 800, 0, 480, 489, 492, 525, 0,
 321                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 322         /* 800x600@60Hz */
 323         { DRM_MODE("800x600",
 324                    DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 325                    40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
 326                    0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 327         /* 1024x768@60Hz */
 328         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
 329                    1184, 1344, 0, 768, 771, 777, 806, 0,
 330                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
 331         /* 1152x864@75Hz */
 332         { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
 333                    1344, 1600, 0, 864, 865, 868, 900, 0,
 334                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 335         /* 1280x768@60Hz */
 336         { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
 337                    1472, 1664, 0, 768, 771, 778, 798, 0,
 338                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 339         /* 1280x800@60Hz */
 340         { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
 341                    1480, 1680, 0, 800, 803, 809, 831, 0,
 342                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
 343         /* 1280x960@60Hz */
 344         { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
 345                    1488, 1800, 0, 960, 961, 964, 1000, 0,
 346                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 347         /* 1280x1024@60Hz */
 348         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
 349                    1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
 350                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 351         /* 1360x768@60Hz */
 352         { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
 353                    1536, 1792, 0, 768, 771, 777, 795, 0,
 354                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 355         /* 1440x1050@60Hz */
 356         { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
 357                    1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
 358                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 359         /* 1440x900@60Hz */
 360         { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
 361                    1672, 1904, 0, 900, 903, 909, 934, 0,
 362                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 363         /* 1600x1200@60Hz */
 364         { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
 365                    1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
 366                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
 367         /* 1680x1050@60Hz */
 368         { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
 369                    1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
 370                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 371         /* 1792x1344@60Hz */
 372         { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
 373                    2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
 374                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 375         /* 1853x1392@60Hz */
 376         { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
 377                    2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
 378                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 379         /* 1920x1200@60Hz */
 380         { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
 381                    2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
 382                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 383         /* 1920x1440@60Hz */
 384         { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
 385                    2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
 386                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 387         /* 2560x1600@60Hz */
 388         { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
 389                    3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
 390                    DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
 391         /* Terminate */
 392         { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
 393 };
 394
 395 static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
 396                                         uint32_t max_width, uint32_t max_height)
 397 {
 398         struct drm_device *dev = connector->dev;
 399         struct drm_display_mode *mode = NULL;
 400         int i;
 401
 402         for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
 403                 if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
 404                     vmw_ldu_connector_builtin[i].vdisplay > max_height)
 405                         continue;
 406
 407                 mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
 408                 if (!mode)
 409                         return 0;
 410                 mode->vrefresh = drm_mode_vrefresh(mode);
 411
 412                 drm_mode_probed_add(connector, mode);
 413         }
 414
 415         drm_mode_connector_list_update(connector);
 416
 417         return 1;
 418 }
 419
 420 static int vmw_ldu_connector_set_property(struct drm_connector *connector,
 421                                           struct drm_property *property,
 422                                           uint64_t val)
 423 {
 424         return 0;
 425 }
 426
 427 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
 428 {
 429         vmw_ldu_destroy(vmw_connector_to_ldu(connector));
 430 }
 431
 432 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
 433         .dpms = vmw_ldu_connector_dpms,
 434         .save = vmw_ldu_connector_save,
 435         .restore = vmw_ldu_connector_restore,
 436         .detect = vmw_ldu_connector_detect,
 437         .fill_modes = vmw_ldu_connector_fill_modes,
 438         .set_property = vmw_ldu_connector_set_property,
 439         .destroy = vmw_ldu_connector_destroy,
 440 };
 441
 442 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
 443 {
 444         struct vmw_legacy_display_unit *ldu;
 445         struct drm_device *dev = dev_priv->dev;
 446         struct drm_connector *connector;
 447         struct drm_encoder *encoder;
 448         struct drm_crtc *crtc;
 449
 450         ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
 451         if (!ldu)
 452                 return -ENOMEM;
 453
 454         ldu->unit = unit;
 455         crtc = &ldu->base.crtc;
 456         encoder = &ldu->base.encoder;
 457         connector = &ldu->base.connector;
 458
 459         INIT_LIST_HEAD(&ldu->active);
 460
 461         drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
 462                            DRM_MODE_CONNECTOR_LVDS);
 463         connector->status = vmw_ldu_connector_detect(connector);
 464
 465         drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
 466                          DRM_MODE_ENCODER_LVDS);
 467         drm_mode_connector_attach_encoder(connector, encoder);
 468         encoder->possible_crtcs = (1 << unit);
 469         encoder->possible_clones = 0;
 470
 471         drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
 472
 473         drm_connector_attach_property(connector,
 474                                       dev->mode_config.dirty_info_property,
 475                                       1);
 476
 477         return 0;
 478 }
 479
 480 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
 481 {
 482         if (dev_priv->ldu_priv) {
 483                 DRM_INFO("ldu system already on\n");
 484                 return -EINVAL;
 485         }
 486
 487         dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
 488
 489         if (!dev_priv->ldu_priv)
 490                 return -ENOMEM;
 491
 492         INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
 493         dev_priv->ldu_priv->num_active = 0;
 494         dev_priv->ldu_priv->fb = NULL;
 495
 496         drm_mode_create_dirty_info_property(dev_priv->dev);
 497
 498         vmw_ldu_init(dev_priv, 0);
 499         vmw_ldu_init(dev_priv, 1);
 500         vmw_ldu_init(dev_priv, 2);
 501         vmw_ldu_init(dev_priv, 3);
 502         vmw_ldu_init(dev_priv, 4);
 503         vmw_ldu_init(dev_priv, 5);
 504         vmw_ldu_init(dev_priv, 6);
 505         vmw_ldu_init(dev_priv, 7);
 506
 507         return 0;
 508 }
 509
 510 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
 511 {
 512         if (!dev_priv->ldu_priv)
 513                 return -ENOSYS;
 514
 515         BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
 516
 517         kfree(dev_priv->ldu_priv);
 518
 519         return 0;
 520 }