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 31 #define vmw_crtc_to_ldu(x) \ 32 container_of(x, struct vmw_legacy_display_unit, base.crtc) 33 #define vmw_encoder_to_ldu(x) \ 34 container_of(x, struct vmw_legacy_display_unit, base.encoder) 35 #define vmw_connector_to_ldu(x) \ 36 container_of(x, struct vmw_legacy_display_unit, base.connector) 37 38 struct vmw_legacy_display { 39 struct list_head active; 40 41 unsigned num_active; 42 unsigned last_num_active; 43 44 struct vmw_framebuffer *fb; 45 }; 46 47 /** 48 * Display unit using the legacy register interface. 49 */ 50 struct vmw_legacy_display_unit { 51 struct vmw_display_unit base; 52 53 struct list_head active; 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_destroy(struct drm_crtc *crtc) 69 { 70 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); 71 } 72 73 static int vmw_ldu_commit_list(struct vmw_private *dev_priv) 74 { 75 struct vmw_legacy_display *lds = dev_priv->ldu_priv; 76 struct vmw_legacy_display_unit *entry; 77 struct vmw_display_unit *du = NULL; 78 struct drm_framebuffer *fb = NULL; 79 struct drm_crtc *crtc = NULL; 80 int i = 0, ret; 81 82 /* If there is no display topology the host just assumes 83 * that the guest will set the same layout as the host. 84 */ 85 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { 86 int w = 0, h = 0; 87 list_for_each_entry(entry, &lds->active, active) { 88 crtc = &entry->base.crtc; 89 w = max(w, crtc->x + crtc->mode.hdisplay); 90 h = max(h, crtc->y + crtc->mode.vdisplay); 91 i++; 92 } 93 94 if (crtc == NULL) 95 return 0; 96 fb = entry->base.crtc.fb; 97 98 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], 99 fb->bits_per_pixel, fb->depth); 100 } 101 102 if (!list_empty(&lds->active)) { 103 entry = list_entry(lds->active.next, typeof(*entry), active); 104 fb = entry->base.crtc.fb; 105 106 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], 107 fb->bits_per_pixel, fb->depth); 108 } 109 110 /* Make sure we always show something. */ 111 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 112 lds->num_active ? lds->num_active : 1); 113 114 i = 0; 115 list_for_each_entry(entry, &lds->active, active) { 116 crtc = &entry->base.crtc; 117 118 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 119 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 120 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 121 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 122 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 124 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 125 126 i++; 127 } 128 129 BUG_ON(i != lds->num_active); 130 131 lds->last_num_active = lds->num_active; 132 133 134 /* Find the first du with a cursor. */ 135 list_for_each_entry(entry, &lds->active, active) { 136 du = &entry->base; 137 138 if (!du->cursor_dmabuf) 139 continue; 140 141 ret = vmw_cursor_update_dmabuf(dev_priv, 142 du->cursor_dmabuf, 143 64, 64, 144 du->hotspot_x, 145 du->hotspot_y); 146 if (ret == 0) 147 break; 148 149 DRM_ERROR("Could not update cursor image\n"); 150 } 151 152 return 0; 153 } 154 155 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 156 struct vmw_legacy_display_unit *ldu) 157 { 158 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 159 if (list_empty(&ldu->active)) 160 return 0; 161 162 /* Must init otherwise list_empty(&ldu->active) will not work. */ 163 list_del_init(&ldu->active); 164 if (--(ld->num_active) == 0) { 165 BUG_ON(!ld->fb); 166 if (ld->fb->unpin) 167 ld->fb->unpin(ld->fb); 168 ld->fb = NULL; 169 } 170 171 return 0; 172 } 173 174 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 175 struct vmw_legacy_display_unit *ldu, 176 struct vmw_framebuffer *vfb) 177 { 178 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 179 struct vmw_legacy_display_unit *entry; 180 struct list_head *at; 181 182 BUG_ON(!ld->num_active && ld->fb); 183 if (vfb != ld->fb) { 184 if (ld->fb && ld->fb->unpin) 185 ld->fb->unpin(ld->fb); 186 if (vfb->pin) 187 vfb->pin(vfb); 188 ld->fb = vfb; 189 } 190 191 if (!list_empty(&ldu->active)) 192 return 0; 193 194 at = &ld->active; 195 list_for_each_entry(entry, &ld->active, active) { 196 if (entry->base.unit > ldu->base.unit) 197 break; 198 199 at = &entry->active; 200 } 201 202 list_add(&ldu->active, at); 203 204 ld->num_active++; 205 206 return 0; 207 } 208 209 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set) 210 { 211 struct vmw_private *dev_priv; 212 struct vmw_legacy_display_unit *ldu; 213 struct drm_connector *connector; 214 struct drm_display_mode *mode; 215 struct drm_encoder *encoder; 216 struct vmw_framebuffer *vfb; 217 struct drm_framebuffer *fb; 218 struct drm_crtc *crtc; 219 220 if (!set) 221 return -EINVAL; 222 223 if (!set->crtc) 224 return -EINVAL; 225 226 /* get the ldu */ 227 crtc = set->crtc; 228 ldu = vmw_crtc_to_ldu(crtc); 229 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 230 dev_priv = vmw_priv(crtc->dev); 231 232 if (set->num_connectors > 1) { 233 DRM_ERROR("to many connectors\n"); 234 return -EINVAL; 235 } 236 237 if (set->num_connectors == 1 && 238 set->connectors[0] != &ldu->base.connector) { 239 DRM_ERROR("connector doesn't match %p %p\n", 240 set->connectors[0], &ldu->base.connector); 241 return -EINVAL; 242 } 243 244 /* ldu only supports one fb active at the time */ 245 if (dev_priv->ldu_priv->fb && vfb && 246 !(dev_priv->ldu_priv->num_active == 1 && 247 !list_empty(&ldu->active)) && 248 dev_priv->ldu_priv->fb != vfb) { 249 DRM_ERROR("Multiple framebuffers not supported\n"); 250 return -EINVAL; 251 } 252 253 /* since they always map one to one these are safe */ 254 connector = &ldu->base.connector; 255 encoder = &ldu->base.encoder; 256 257 /* should we turn the crtc off? */ 258 if (set->num_connectors == 0 || !set->mode || !set->fb) { 259 260 connector->encoder = NULL; 261 encoder->crtc = NULL; 262 crtc->fb = NULL; 263 264 vmw_ldu_del_active(dev_priv, ldu); 265 266 return vmw_ldu_commit_list(dev_priv); 267 } 268 269 270 /* we now know we want to set a mode */ 271 mode = set->mode; 272 fb = set->fb; 273 274 if (set->x + mode->hdisplay > fb->width || 275 set->y + mode->vdisplay > fb->height) { 276 DRM_ERROR("set outside of framebuffer\n"); 277 return -EINVAL; 278 } 279 280 vmw_fb_off(dev_priv); 281 282 crtc->fb = fb; 283 encoder->crtc = crtc; 284 connector->encoder = encoder; 285 crtc->x = set->x; 286 crtc->y = set->y; 287 crtc->mode = *mode; 288 289 vmw_ldu_add_active(dev_priv, ldu, vfb); 290 291 return vmw_ldu_commit_list(dev_priv); 292 } 293 294 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 295 .save = vmw_du_crtc_save, 296 .restore = vmw_du_crtc_restore, 297 .cursor_set = vmw_du_crtc_cursor_set, 298 .cursor_move = vmw_du_crtc_cursor_move, 299 .gamma_set = vmw_du_crtc_gamma_set, 300 .destroy = vmw_ldu_crtc_destroy, 301 .set_config = vmw_ldu_crtc_set_config, 302 }; 303 304 305 /* 306 * Legacy Display Unit encoder functions 307 */ 308 309 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 310 { 311 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 312 } 313 314 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 315 .destroy = vmw_ldu_encoder_destroy, 316 }; 317 318 /* 319 * Legacy Display Unit connector functions 320 */ 321 322 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 323 { 324 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 325 } 326 327 static struct drm_connector_funcs vmw_legacy_connector_funcs = { 328 .dpms = vmw_du_connector_dpms, 329 .save = vmw_du_connector_save, 330 .restore = vmw_du_connector_restore, 331 .detect = vmw_du_connector_detect, 332 .fill_modes = vmw_du_connector_fill_modes, 333 .set_property = vmw_du_connector_set_property, 334 .destroy = vmw_ldu_connector_destroy, 335 }; 336 337 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 338 { 339 struct vmw_legacy_display_unit *ldu; 340 struct drm_device *dev = dev_priv->dev; 341 struct drm_connector *connector; 342 struct drm_encoder *encoder; 343 struct drm_crtc *crtc; 344 345 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 346 if (!ldu) 347 return -ENOMEM; 348 349 ldu->base.unit = unit; 350 crtc = &ldu->base.crtc; 351 encoder = &ldu->base.encoder; 352 connector = &ldu->base.connector; 353 354 INIT_LIST_HEAD(&ldu->active); 355 356 ldu->base.pref_active = (unit == 0); 357 ldu->base.pref_width = dev_priv->initial_width; 358 ldu->base.pref_height = dev_priv->initial_height; 359 ldu->base.pref_mode = NULL; 360 ldu->base.is_implicit = true; 361 362 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 363 DRM_MODE_CONNECTOR_VIRTUAL); 364 connector->status = vmw_du_connector_detect(connector, true); 365 366 drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 367 DRM_MODE_ENCODER_VIRTUAL); 368 drm_mode_connector_attach_encoder(connector, encoder); 369 encoder->possible_crtcs = (1 << unit); 370 encoder->possible_clones = 0; 371 372 drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs); 373 374 drm_mode_crtc_set_gamma_size(crtc, 256); 375 376 drm_object_attach_property(&connector->base, 377 dev->mode_config.dirty_info_property, 378 1); 379 380 return 0; 381 } 382 383 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) 384 { 385 struct drm_device *dev = dev_priv->dev; 386 int i, ret; 387 388 if (dev_priv->ldu_priv) { 389 DRM_INFO("ldu system already on\n"); 390 return -EINVAL; 391 } 392 393 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 394 if (!dev_priv->ldu_priv) 395 return -ENOMEM; 396 397 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 398 dev_priv->ldu_priv->num_active = 0; 399 dev_priv->ldu_priv->last_num_active = 0; 400 dev_priv->ldu_priv->fb = NULL; 401 402 /* for old hardware without multimon only enable one display */ 403 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 404 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 405 else 406 ret = drm_vblank_init(dev, 1); 407 if (ret != 0) 408 goto err_free; 409 410 ret = drm_mode_create_dirty_info_property(dev); 411 if (ret != 0) 412 goto err_vblank_cleanup; 413 414 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 415 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 416 vmw_ldu_init(dev_priv, i); 417 else 418 vmw_ldu_init(dev_priv, 0); 419 420 return 0; 421 422 err_vblank_cleanup: 423 drm_vblank_cleanup(dev); 424 err_free: 425 kfree(dev_priv->ldu_priv); 426 dev_priv->ldu_priv = NULL; 427 return ret; 428 } 429 430 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) 431 { 432 struct drm_device *dev = dev_priv->dev; 433 434 if (!dev_priv->ldu_priv) 435 return -ENOSYS; 436 437 drm_vblank_cleanup(dev); 438 439 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 440 441 kfree(dev_priv->ldu_priv); 442 443 return 0; 444 } 445