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 #include <drm/drm_plane_helper.h> 30 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 struct list_head active; 55 }; 56 57 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu) 58 { 59 list_del_init(&ldu->active); 60 vmw_display_unit_cleanup(&ldu->base); 61 kfree(ldu); 62 } 63 64 65 /* 66 * Legacy Display Unit CRTC functions 67 */ 68 69 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc) 70 { 71 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); 72 } 73 74 static int vmw_ldu_commit_list(struct vmw_private *dev_priv) 75 { 76 struct vmw_legacy_display *lds = dev_priv->ldu_priv; 77 struct vmw_legacy_display_unit *entry; 78 struct vmw_display_unit *du = NULL; 79 struct drm_framebuffer *fb = NULL; 80 struct drm_crtc *crtc = NULL; 81 int i = 0, ret; 82 83 /* If there is no display topology the host just assumes 84 * that the guest will set the same layout as the host. 85 */ 86 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { 87 int w = 0, h = 0; 88 list_for_each_entry(entry, &lds->active, active) { 89 crtc = &entry->base.crtc; 90 w = max(w, crtc->x + crtc->mode.hdisplay); 91 h = max(h, crtc->y + crtc->mode.vdisplay); 92 i++; 93 } 94 95 if (crtc == NULL) 96 return 0; 97 fb = entry->base.crtc.primary->fb; 98 99 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], 100 fb->bits_per_pixel, fb->depth); 101 } 102 103 if (!list_empty(&lds->active)) { 104 entry = list_entry(lds->active.next, typeof(*entry), active); 105 fb = entry->base.crtc.primary->fb; 106 107 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], 108 fb->bits_per_pixel, fb->depth); 109 } 110 111 /* Make sure we always show something. */ 112 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 113 lds->num_active ? lds->num_active : 1); 114 115 i = 0; 116 list_for_each_entry(entry, &lds->active, active) { 117 crtc = &entry->base.crtc; 118 119 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 120 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 121 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 122 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 124 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 125 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 126 127 i++; 128 } 129 130 BUG_ON(i != lds->num_active); 131 132 lds->last_num_active = lds->num_active; 133 134 135 /* Find the first du with a cursor. */ 136 list_for_each_entry(entry, &lds->active, active) { 137 du = &entry->base; 138 139 if (!du->cursor_dmabuf) 140 continue; 141 142 ret = vmw_cursor_update_dmabuf(dev_priv, 143 du->cursor_dmabuf, 144 64, 64, 145 du->hotspot_x, 146 du->hotspot_y); 147 if (ret == 0) 148 break; 149 150 DRM_ERROR("Could not update cursor image\n"); 151 } 152 153 return 0; 154 } 155 156 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 157 struct vmw_legacy_display_unit *ldu) 158 { 159 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 160 if (list_empty(&ldu->active)) 161 return 0; 162 163 /* Must init otherwise list_empty(&ldu->active) will not work. */ 164 list_del_init(&ldu->active); 165 if (--(ld->num_active) == 0) { 166 BUG_ON(!ld->fb); 167 if (ld->fb->unpin) 168 ld->fb->unpin(ld->fb); 169 ld->fb = NULL; 170 } 171 172 return 0; 173 } 174 175 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 176 struct vmw_legacy_display_unit *ldu, 177 struct vmw_framebuffer *vfb) 178 { 179 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 180 struct vmw_legacy_display_unit *entry; 181 struct list_head *at; 182 183 BUG_ON(!ld->num_active && ld->fb); 184 if (vfb != ld->fb) { 185 if (ld->fb && ld->fb->unpin) 186 ld->fb->unpin(ld->fb); 187 if (vfb->pin) 188 vfb->pin(vfb); 189 ld->fb = vfb; 190 } 191 192 if (!list_empty(&ldu->active)) 193 return 0; 194 195 at = &ld->active; 196 list_for_each_entry(entry, &ld->active, active) { 197 if (entry->base.unit > ldu->base.unit) 198 break; 199 200 at = &entry->active; 201 } 202 203 list_add(&ldu->active, at); 204 205 ld->num_active++; 206 207 return 0; 208 } 209 210 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set) 211 { 212 struct vmw_private *dev_priv; 213 struct vmw_legacy_display_unit *ldu; 214 struct drm_connector *connector; 215 struct drm_display_mode *mode; 216 struct drm_encoder *encoder; 217 struct vmw_framebuffer *vfb; 218 struct drm_framebuffer *fb; 219 struct drm_crtc *crtc; 220 221 if (!set) 222 return -EINVAL; 223 224 if (!set->crtc) 225 return -EINVAL; 226 227 /* get the ldu */ 228 crtc = set->crtc; 229 ldu = vmw_crtc_to_ldu(crtc); 230 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 231 dev_priv = vmw_priv(crtc->dev); 232 233 if (set->num_connectors > 1) { 234 DRM_ERROR("to many connectors\n"); 235 return -EINVAL; 236 } 237 238 if (set->num_connectors == 1 && 239 set->connectors[0] != &ldu->base.connector) { 240 DRM_ERROR("connector doesn't match %p %p\n", 241 set->connectors[0], &ldu->base.connector); 242 return -EINVAL; 243 } 244 245 /* ldu only supports one fb active at the time */ 246 if (dev_priv->ldu_priv->fb && vfb && 247 !(dev_priv->ldu_priv->num_active == 1 && 248 !list_empty(&ldu->active)) && 249 dev_priv->ldu_priv->fb != vfb) { 250 DRM_ERROR("Multiple framebuffers not supported\n"); 251 return -EINVAL; 252 } 253 254 /* since they always map one to one these are safe */ 255 connector = &ldu->base.connector; 256 encoder = &ldu->base.encoder; 257 258 /* should we turn the crtc off? */ 259 if (set->num_connectors == 0 || !set->mode || !set->fb) { 260 261 connector->encoder = NULL; 262 encoder->crtc = NULL; 263 crtc->primary->fb = NULL; 264 crtc->enabled = false; 265 266 vmw_ldu_del_active(dev_priv, ldu); 267 268 return vmw_ldu_commit_list(dev_priv); 269 } 270 271 272 /* we now know we want to set a mode */ 273 mode = set->mode; 274 fb = set->fb; 275 276 if (set->x + mode->hdisplay > fb->width || 277 set->y + mode->vdisplay > fb->height) { 278 DRM_ERROR("set outside of framebuffer\n"); 279 return -EINVAL; 280 } 281 282 vmw_fb_off(dev_priv); 283 284 crtc->primary->fb = fb; 285 encoder->crtc = crtc; 286 connector->encoder = encoder; 287 crtc->x = set->x; 288 crtc->y = set->y; 289 crtc->mode = *mode; 290 crtc->enabled = true; 291 292 vmw_ldu_add_active(dev_priv, ldu, vfb); 293 294 return vmw_ldu_commit_list(dev_priv); 295 } 296 297 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 298 .save = vmw_du_crtc_save, 299 .restore = vmw_du_crtc_restore, 300 .cursor_set = vmw_du_crtc_cursor_set, 301 .cursor_move = vmw_du_crtc_cursor_move, 302 .gamma_set = vmw_du_crtc_gamma_set, 303 .destroy = vmw_ldu_crtc_destroy, 304 .set_config = vmw_ldu_crtc_set_config, 305 }; 306 307 308 /* 309 * Legacy Display Unit encoder functions 310 */ 311 312 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 313 { 314 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 315 } 316 317 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 318 .destroy = vmw_ldu_encoder_destroy, 319 }; 320 321 /* 322 * Legacy Display Unit connector functions 323 */ 324 325 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 326 { 327 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 328 } 329 330 static struct drm_connector_funcs vmw_legacy_connector_funcs = { 331 .dpms = vmw_du_connector_dpms, 332 .save = vmw_du_connector_save, 333 .restore = vmw_du_connector_restore, 334 .detect = vmw_du_connector_detect, 335 .fill_modes = vmw_du_connector_fill_modes, 336 .set_property = vmw_du_connector_set_property, 337 .destroy = vmw_ldu_connector_destroy, 338 }; 339 340 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 341 { 342 struct vmw_legacy_display_unit *ldu; 343 struct drm_device *dev = dev_priv->dev; 344 struct drm_connector *connector; 345 struct drm_encoder *encoder; 346 struct drm_crtc *crtc; 347 348 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 349 if (!ldu) 350 return -ENOMEM; 351 352 ldu->base.unit = unit; 353 crtc = &ldu->base.crtc; 354 encoder = &ldu->base.encoder; 355 connector = &ldu->base.connector; 356 357 INIT_LIST_HEAD(&ldu->active); 358 359 ldu->base.pref_active = (unit == 0); 360 ldu->base.pref_width = dev_priv->initial_width; 361 ldu->base.pref_height = dev_priv->initial_height; 362 ldu->base.pref_mode = NULL; 363 ldu->base.is_implicit = true; 364 365 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 366 DRM_MODE_CONNECTOR_VIRTUAL); 367 connector->status = vmw_du_connector_detect(connector, true); 368 369 drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 370 DRM_MODE_ENCODER_VIRTUAL); 371 drm_mode_connector_attach_encoder(connector, encoder); 372 encoder->possible_crtcs = (1 << unit); 373 encoder->possible_clones = 0; 374 375 (void) drm_connector_register(connector); 376 377 drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs); 378 379 drm_mode_crtc_set_gamma_size(crtc, 256); 380 381 drm_object_attach_property(&connector->base, 382 dev->mode_config.dirty_info_property, 383 1); 384 385 return 0; 386 } 387 388 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) 389 { 390 struct drm_device *dev = dev_priv->dev; 391 int i, ret; 392 393 if (dev_priv->ldu_priv) { 394 DRM_INFO("ldu system already on\n"); 395 return -EINVAL; 396 } 397 398 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 399 if (!dev_priv->ldu_priv) 400 return -ENOMEM; 401 402 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 403 dev_priv->ldu_priv->num_active = 0; 404 dev_priv->ldu_priv->last_num_active = 0; 405 dev_priv->ldu_priv->fb = NULL; 406 407 /* for old hardware without multimon only enable one display */ 408 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 409 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 410 else 411 ret = drm_vblank_init(dev, 1); 412 if (ret != 0) 413 goto err_free; 414 415 ret = drm_mode_create_dirty_info_property(dev); 416 if (ret != 0) 417 goto err_vblank_cleanup; 418 419 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 420 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 421 vmw_ldu_init(dev_priv, i); 422 else 423 vmw_ldu_init(dev_priv, 0); 424 425 return 0; 426 427 err_vblank_cleanup: 428 drm_vblank_cleanup(dev); 429 err_free: 430 kfree(dev_priv->ldu_priv); 431 dev_priv->ldu_priv = NULL; 432 return ret; 433 } 434 435 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) 436 { 437 struct drm_device *dev = dev_priv->dev; 438 439 if (!dev_priv->ldu_priv) 440 return -ENOSYS; 441 442 drm_vblank_cleanup(dev); 443 444 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 445 446 kfree(dev_priv->ldu_priv); 447 448 return 0; 449 } 450