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 drm_framebuffer *fb = NULL; 78 struct drm_crtc *crtc = NULL; 79 int i = 0; 80 81 /* If there is no display topology the host just assumes 82 * that the guest will set the same layout as the host. 83 */ 84 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { 85 int w = 0, h = 0; 86 list_for_each_entry(entry, &lds->active, active) { 87 crtc = &entry->base.crtc; 88 w = max(w, crtc->x + crtc->mode.hdisplay); 89 h = max(h, crtc->y + crtc->mode.vdisplay); 90 i++; 91 } 92 93 if (crtc == NULL) 94 return 0; 95 fb = entry->base.crtc.fb; 96 97 return vmw_kms_write_svga(dev_priv, w, h, fb->pitch, 98 fb->bits_per_pixel, fb->depth); 99 } 100 101 if (!list_empty(&lds->active)) { 102 entry = list_entry(lds->active.next, typeof(*entry), active); 103 fb = entry->base.crtc.fb; 104 105 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch, 106 fb->bits_per_pixel, fb->depth); 107 } 108 109 /* Make sure we always show something. */ 110 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 111 lds->num_active ? lds->num_active : 1); 112 113 i = 0; 114 list_for_each_entry(entry, &lds->active, active) { 115 crtc = &entry->base.crtc; 116 117 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); 118 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); 119 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); 120 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); 121 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); 122 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); 123 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); 124 125 i++; 126 } 127 128 BUG_ON(i != lds->num_active); 129 130 lds->last_num_active = lds->num_active; 131 132 return 0; 133 } 134 135 static int vmw_ldu_del_active(struct vmw_private *vmw_priv, 136 struct vmw_legacy_display_unit *ldu) 137 { 138 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 139 if (list_empty(&ldu->active)) 140 return 0; 141 142 /* Must init otherwise list_empty(&ldu->active) will not work. */ 143 list_del_init(&ldu->active); 144 if (--(ld->num_active) == 0) { 145 BUG_ON(!ld->fb); 146 if (ld->fb->unpin) 147 ld->fb->unpin(ld->fb); 148 ld->fb = NULL; 149 } 150 151 return 0; 152 } 153 154 static int vmw_ldu_add_active(struct vmw_private *vmw_priv, 155 struct vmw_legacy_display_unit *ldu, 156 struct vmw_framebuffer *vfb) 157 { 158 struct vmw_legacy_display *ld = vmw_priv->ldu_priv; 159 struct vmw_legacy_display_unit *entry; 160 struct list_head *at; 161 162 BUG_ON(!ld->num_active && ld->fb); 163 if (vfb != ld->fb) { 164 if (ld->fb && ld->fb->unpin) 165 ld->fb->unpin(ld->fb); 166 if (vfb->pin) 167 vfb->pin(vfb); 168 ld->fb = vfb; 169 } 170 171 if (!list_empty(&ldu->active)) 172 return 0; 173 174 at = &ld->active; 175 list_for_each_entry(entry, &ld->active, active) { 176 if (entry->base.unit > ldu->base.unit) 177 break; 178 179 at = &entry->active; 180 } 181 182 list_add(&ldu->active, at); 183 184 ld->num_active++; 185 186 return 0; 187 } 188 189 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set) 190 { 191 struct vmw_private *dev_priv; 192 struct vmw_legacy_display_unit *ldu; 193 struct drm_connector *connector; 194 struct drm_display_mode *mode; 195 struct drm_encoder *encoder; 196 struct vmw_framebuffer *vfb; 197 struct drm_framebuffer *fb; 198 struct drm_crtc *crtc; 199 200 if (!set) 201 return -EINVAL; 202 203 if (!set->crtc) 204 return -EINVAL; 205 206 /* get the ldu */ 207 crtc = set->crtc; 208 ldu = vmw_crtc_to_ldu(crtc); 209 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; 210 dev_priv = vmw_priv(crtc->dev); 211 212 if (set->num_connectors > 1) { 213 DRM_ERROR("to many connectors\n"); 214 return -EINVAL; 215 } 216 217 if (set->num_connectors == 1 && 218 set->connectors[0] != &ldu->base.connector) { 219 DRM_ERROR("connector doesn't match %p %p\n", 220 set->connectors[0], &ldu->base.connector); 221 return -EINVAL; 222 } 223 224 /* ldu only supports one fb active at the time */ 225 if (dev_priv->ldu_priv->fb && vfb && 226 !(dev_priv->ldu_priv->num_active == 1 && 227 !list_empty(&ldu->active)) && 228 dev_priv->ldu_priv->fb != vfb) { 229 DRM_ERROR("Multiple framebuffers not supported\n"); 230 return -EINVAL; 231 } 232 233 /* since they always map one to one these are safe */ 234 connector = &ldu->base.connector; 235 encoder = &ldu->base.encoder; 236 237 /* should we turn the crtc off? */ 238 if (set->num_connectors == 0 || !set->mode || !set->fb) { 239 240 connector->encoder = NULL; 241 encoder->crtc = NULL; 242 crtc->fb = NULL; 243 244 vmw_ldu_del_active(dev_priv, ldu); 245 246 return vmw_ldu_commit_list(dev_priv); 247 } 248 249 250 /* we now know we want to set a mode */ 251 mode = set->mode; 252 fb = set->fb; 253 254 if (set->x + mode->hdisplay > fb->width || 255 set->y + mode->vdisplay > fb->height) { 256 DRM_ERROR("set outside of framebuffer\n"); 257 return -EINVAL; 258 } 259 260 vmw_fb_off(dev_priv); 261 262 crtc->fb = fb; 263 encoder->crtc = crtc; 264 connector->encoder = encoder; 265 crtc->x = set->x; 266 crtc->y = set->y; 267 crtc->mode = *mode; 268 269 vmw_ldu_add_active(dev_priv, ldu, vfb); 270 271 return vmw_ldu_commit_list(dev_priv); 272 } 273 274 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = { 275 .save = vmw_du_crtc_save, 276 .restore = vmw_du_crtc_restore, 277 .cursor_set = vmw_du_crtc_cursor_set, 278 .cursor_move = vmw_du_crtc_cursor_move, 279 .gamma_set = vmw_du_crtc_gamma_set, 280 .destroy = vmw_ldu_crtc_destroy, 281 .set_config = vmw_ldu_crtc_set_config, 282 }; 283 284 285 /* 286 * Legacy Display Unit encoder functions 287 */ 288 289 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) 290 { 291 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); 292 } 293 294 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = { 295 .destroy = vmw_ldu_encoder_destroy, 296 }; 297 298 /* 299 * Legacy Display Unit connector functions 300 */ 301 302 static void vmw_ldu_connector_destroy(struct drm_connector *connector) 303 { 304 vmw_ldu_destroy(vmw_connector_to_ldu(connector)); 305 } 306 307 static struct drm_connector_funcs vmw_legacy_connector_funcs = { 308 .dpms = vmw_du_connector_dpms, 309 .save = vmw_du_connector_save, 310 .restore = vmw_du_connector_restore, 311 .detect = vmw_du_connector_detect, 312 .fill_modes = vmw_du_connector_fill_modes, 313 .set_property = vmw_du_connector_set_property, 314 .destroy = vmw_ldu_connector_destroy, 315 }; 316 317 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) 318 { 319 struct vmw_legacy_display_unit *ldu; 320 struct drm_device *dev = dev_priv->dev; 321 struct drm_connector *connector; 322 struct drm_encoder *encoder; 323 struct drm_crtc *crtc; 324 325 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); 326 if (!ldu) 327 return -ENOMEM; 328 329 ldu->base.unit = unit; 330 crtc = &ldu->base.crtc; 331 encoder = &ldu->base.encoder; 332 connector = &ldu->base.connector; 333 334 INIT_LIST_HEAD(&ldu->active); 335 336 ldu->base.pref_active = (unit == 0); 337 ldu->base.pref_width = 800; 338 ldu->base.pref_height = 600; 339 ldu->base.pref_mode = NULL; 340 ldu->base.is_implicit = true; 341 342 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, 343 DRM_MODE_CONNECTOR_VIRTUAL); 344 connector->status = vmw_du_connector_detect(connector, true); 345 346 drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, 347 DRM_MODE_ENCODER_VIRTUAL); 348 drm_mode_connector_attach_encoder(connector, encoder); 349 encoder->possible_crtcs = (1 << unit); 350 encoder->possible_clones = 0; 351 352 drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs); 353 354 drm_mode_crtc_set_gamma_size(crtc, 256); 355 356 drm_connector_attach_property(connector, 357 dev->mode_config.dirty_info_property, 358 1); 359 360 return 0; 361 } 362 363 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) 364 { 365 struct drm_device *dev = dev_priv->dev; 366 int i, ret; 367 368 if (dev_priv->ldu_priv) { 369 DRM_INFO("ldu system already on\n"); 370 return -EINVAL; 371 } 372 373 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); 374 if (!dev_priv->ldu_priv) 375 return -ENOMEM; 376 377 INIT_LIST_HEAD(&dev_priv->ldu_priv->active); 378 dev_priv->ldu_priv->num_active = 0; 379 dev_priv->ldu_priv->last_num_active = 0; 380 dev_priv->ldu_priv->fb = NULL; 381 382 /* for old hardware without multimon only enable one display */ 383 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 384 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); 385 else 386 ret = drm_vblank_init(dev, 1); 387 if (ret != 0) 388 goto err_free; 389 390 ret = drm_mode_create_dirty_info_property(dev); 391 if (ret != 0) 392 goto err_vblank_cleanup; 393 394 if (dev_priv->capabilities & SVGA_CAP_MULTIMON) 395 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) 396 vmw_ldu_init(dev_priv, i); 397 else 398 vmw_ldu_init(dev_priv, 0); 399 400 return 0; 401 402 err_vblank_cleanup: 403 drm_vblank_cleanup(dev); 404 err_free: 405 kfree(dev_priv->ldu_priv); 406 dev_priv->ldu_priv = NULL; 407 return ret; 408 } 409 410 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) 411 { 412 struct drm_device *dev = dev_priv->dev; 413 414 if (!dev_priv->ldu_priv) 415 return -ENOSYS; 416 417 drm_vblank_cleanup(dev); 418 419 BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); 420 421 kfree(dev_priv->ldu_priv); 422 423 return 0; 424 } 425