1 /* $NetBSD: vgpu.c,v 1.3 2021/12/19 11:06:55 riastradh Exp $ */ 2 3 /* 4 * Copyright(c) 2011-2016 Intel Corporation. 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 "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 * Authors: 26 * Eddie Dong <eddie.dong (at) intel.com> 27 * Kevin Tian <kevin.tian (at) intel.com> 28 * 29 * Contributors: 30 * Ping Gao <ping.a.gao (at) intel.com> 31 * Zhi Wang <zhi.a.wang (at) intel.com> 32 * Bing Niu <bing.niu (at) intel.com> 33 * 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: vgpu.c,v 1.3 2021/12/19 11:06:55 riastradh Exp $"); 38 39 #include "i915_drv.h" 40 #include "gvt.h" 41 #include "i915_pvinfo.h" 42 43 void populate_pvinfo_page(struct intel_vgpu *vgpu) 44 { 45 /* setup the ballooning information */ 46 vgpu_vreg64_t(vgpu, vgtif_reg(magic)) = VGT_MAGIC; 47 vgpu_vreg_t(vgpu, vgtif_reg(version_major)) = 1; 48 vgpu_vreg_t(vgpu, vgtif_reg(version_minor)) = 0; 49 vgpu_vreg_t(vgpu, vgtif_reg(display_ready)) = 0; 50 vgpu_vreg_t(vgpu, vgtif_reg(vgt_id)) = vgpu->id; 51 52 vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) = VGT_CAPS_FULL_PPGTT; 53 vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) |= VGT_CAPS_HWSP_EMULATION; 54 vgpu_vreg_t(vgpu, vgtif_reg(vgt_caps)) |= VGT_CAPS_HUGE_GTT; 55 56 vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.mappable_gmadr.base)) = 57 vgpu_aperture_gmadr_base(vgpu); 58 vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.mappable_gmadr.size)) = 59 vgpu_aperture_sz(vgpu); 60 vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.nonmappable_gmadr.base)) = 61 vgpu_hidden_gmadr_base(vgpu); 62 vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.nonmappable_gmadr.size)) = 63 vgpu_hidden_sz(vgpu); 64 65 vgpu_vreg_t(vgpu, vgtif_reg(avail_rs.fence_num)) = vgpu_fence_sz(vgpu); 66 67 vgpu_vreg_t(vgpu, vgtif_reg(cursor_x_hot)) = UINT_MAX; 68 vgpu_vreg_t(vgpu, vgtif_reg(cursor_y_hot)) = UINT_MAX; 69 70 gvt_dbg_core("Populate PVINFO PAGE for vGPU %d\n", vgpu->id); 71 gvt_dbg_core("aperture base [GMADR] 0x%llx size 0x%llx\n", 72 vgpu_aperture_gmadr_base(vgpu), vgpu_aperture_sz(vgpu)); 73 gvt_dbg_core("hidden base [GMADR] 0x%llx size=0x%llx\n", 74 vgpu_hidden_gmadr_base(vgpu), vgpu_hidden_sz(vgpu)); 75 gvt_dbg_core("fence size %d\n", vgpu_fence_sz(vgpu)); 76 77 WARN_ON(sizeof(struct vgt_if) != VGT_PVINFO_SIZE); 78 } 79 80 #define VGPU_MAX_WEIGHT 16 81 #define VGPU_WEIGHT(vgpu_num) \ 82 (VGPU_MAX_WEIGHT / (vgpu_num)) 83 84 static struct { 85 unsigned int low_mm; 86 unsigned int high_mm; 87 unsigned int fence; 88 89 /* A vGPU with a weight of 8 will get twice as much GPU as a vGPU 90 * with a weight of 4 on a contended host, different vGPU type has 91 * different weight set. Legal weights range from 1 to 16. 92 */ 93 unsigned int weight; 94 enum intel_vgpu_edid edid; 95 char *name; 96 } vgpu_types[] = { 97 /* Fixed vGPU type table */ 98 { MB_TO_BYTES(64), MB_TO_BYTES(384), 4, VGPU_WEIGHT(8), GVT_EDID_1024_768, "8" }, 99 { MB_TO_BYTES(128), MB_TO_BYTES(512), 4, VGPU_WEIGHT(4), GVT_EDID_1920_1200, "4" }, 100 { MB_TO_BYTES(256), MB_TO_BYTES(1024), 4, VGPU_WEIGHT(2), GVT_EDID_1920_1200, "2" }, 101 { MB_TO_BYTES(512), MB_TO_BYTES(2048), 4, VGPU_WEIGHT(1), GVT_EDID_1920_1200, "1" }, 102 }; 103 104 /** 105 * intel_gvt_init_vgpu_types - initialize vGPU type list 106 * @gvt : GVT device 107 * 108 * Initialize vGPU type list based on available resource. 109 * 110 */ 111 int intel_gvt_init_vgpu_types(struct intel_gvt *gvt) 112 { 113 unsigned int num_types; 114 unsigned int i, low_avail, high_avail; 115 unsigned int min_low; 116 117 /* vGPU type name is defined as GVTg_Vx_y which contains 118 * physical GPU generation type (e.g V4 as BDW server, V5 as 119 * SKL server). 120 * 121 * Depend on physical SKU resource, might see vGPU types like 122 * GVTg_V4_8, GVTg_V4_4, GVTg_V4_2, etc. We can create 123 * different types of vGPU on same physical GPU depending on 124 * available resource. Each vGPU type will have "avail_instance" 125 * to indicate how many vGPU instance can be created for this 126 * type. 127 * 128 */ 129 low_avail = gvt_aperture_sz(gvt) - HOST_LOW_GM_SIZE; 130 high_avail = gvt_hidden_sz(gvt) - HOST_HIGH_GM_SIZE; 131 num_types = sizeof(vgpu_types) / sizeof(vgpu_types[0]); 132 133 gvt->types = kcalloc(num_types, sizeof(struct intel_vgpu_type), 134 GFP_KERNEL); 135 if (!gvt->types) 136 return -ENOMEM; 137 138 min_low = MB_TO_BYTES(32); 139 for (i = 0; i < num_types; ++i) { 140 if (low_avail / vgpu_types[i].low_mm == 0) 141 break; 142 143 gvt->types[i].low_gm_size = vgpu_types[i].low_mm; 144 gvt->types[i].high_gm_size = vgpu_types[i].high_mm; 145 gvt->types[i].fence = vgpu_types[i].fence; 146 147 if (vgpu_types[i].weight < 1 || 148 vgpu_types[i].weight > VGPU_MAX_WEIGHT) 149 return -EINVAL; 150 151 gvt->types[i].weight = vgpu_types[i].weight; 152 gvt->types[i].resolution = vgpu_types[i].edid; 153 gvt->types[i].avail_instance = min(low_avail / vgpu_types[i].low_mm, 154 high_avail / vgpu_types[i].high_mm); 155 156 if (IS_GEN(gvt->dev_priv, 8)) 157 sprintf(gvt->types[i].name, "GVTg_V4_%s", 158 vgpu_types[i].name); 159 else if (IS_GEN(gvt->dev_priv, 9)) 160 sprintf(gvt->types[i].name, "GVTg_V5_%s", 161 vgpu_types[i].name); 162 163 gvt_dbg_core("type[%d]: %s avail %u low %u high %u fence %u weight %u res %s\n", 164 i, gvt->types[i].name, 165 gvt->types[i].avail_instance, 166 gvt->types[i].low_gm_size, 167 gvt->types[i].high_gm_size, gvt->types[i].fence, 168 gvt->types[i].weight, 169 vgpu_edid_str(gvt->types[i].resolution)); 170 } 171 172 gvt->num_types = i; 173 return 0; 174 } 175 176 void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt) 177 { 178 kfree(gvt->types); 179 } 180 181 static void intel_gvt_update_vgpu_types(struct intel_gvt *gvt) 182 { 183 int i; 184 unsigned int low_gm_avail, high_gm_avail, fence_avail; 185 unsigned int low_gm_min, high_gm_min, fence_min; 186 187 /* Need to depend on maxium hw resource size but keep on 188 * static config for now. 189 */ 190 low_gm_avail = gvt_aperture_sz(gvt) - HOST_LOW_GM_SIZE - 191 gvt->gm.vgpu_allocated_low_gm_size; 192 high_gm_avail = gvt_hidden_sz(gvt) - HOST_HIGH_GM_SIZE - 193 gvt->gm.vgpu_allocated_high_gm_size; 194 fence_avail = gvt_fence_sz(gvt) - HOST_FENCE - 195 gvt->fence.vgpu_allocated_fence_num; 196 197 for (i = 0; i < gvt->num_types; i++) { 198 low_gm_min = low_gm_avail / gvt->types[i].low_gm_size; 199 high_gm_min = high_gm_avail / gvt->types[i].high_gm_size; 200 fence_min = fence_avail / gvt->types[i].fence; 201 gvt->types[i].avail_instance = min(min(low_gm_min, high_gm_min), 202 fence_min); 203 204 gvt_dbg_core("update type[%d]: %s avail %u low %u high %u fence %u\n", 205 i, gvt->types[i].name, 206 gvt->types[i].avail_instance, gvt->types[i].low_gm_size, 207 gvt->types[i].high_gm_size, gvt->types[i].fence); 208 } 209 } 210 211 /** 212 * intel_gvt_active_vgpu - activate a virtual GPU 213 * @vgpu: virtual GPU 214 * 215 * This function is called when user wants to activate a virtual GPU. 216 * 217 */ 218 void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu) 219 { 220 mutex_lock(&vgpu->vgpu_lock); 221 vgpu->active = true; 222 mutex_unlock(&vgpu->vgpu_lock); 223 } 224 225 /** 226 * intel_gvt_deactive_vgpu - deactivate a virtual GPU 227 * @vgpu: virtual GPU 228 * 229 * This function is called when user wants to deactivate a virtual GPU. 230 * The virtual GPU will be stopped. 231 * 232 */ 233 void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu) 234 { 235 mutex_lock(&vgpu->vgpu_lock); 236 237 vgpu->active = false; 238 239 if (atomic_read(&vgpu->submission.running_workload_num)) { 240 mutex_unlock(&vgpu->vgpu_lock); 241 intel_gvt_wait_vgpu_idle(vgpu); 242 mutex_lock(&vgpu->vgpu_lock); 243 } 244 245 intel_vgpu_stop_schedule(vgpu); 246 247 mutex_unlock(&vgpu->vgpu_lock); 248 } 249 250 /** 251 * intel_gvt_release_vgpu - release a virtual GPU 252 * @vgpu: virtual GPU 253 * 254 * This function is called when user wants to release a virtual GPU. 255 * The virtual GPU will be stopped and all runtime information will be 256 * destroyed. 257 * 258 */ 259 void intel_gvt_release_vgpu(struct intel_vgpu *vgpu) 260 { 261 intel_gvt_deactivate_vgpu(vgpu); 262 263 mutex_lock(&vgpu->vgpu_lock); 264 intel_vgpu_clean_workloads(vgpu, ALL_ENGINES); 265 intel_vgpu_dmabuf_cleanup(vgpu); 266 mutex_unlock(&vgpu->vgpu_lock); 267 } 268 269 /** 270 * intel_gvt_destroy_vgpu - destroy a virtual GPU 271 * @vgpu: virtual GPU 272 * 273 * This function is called when user wants to destroy a virtual GPU. 274 * 275 */ 276 void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu) 277 { 278 struct intel_gvt *gvt = vgpu->gvt; 279 280 mutex_lock(&vgpu->vgpu_lock); 281 282 WARN(vgpu->active, "vGPU is still active!\n"); 283 284 intel_gvt_debugfs_remove_vgpu(vgpu); 285 intel_vgpu_clean_sched_policy(vgpu); 286 intel_vgpu_clean_submission(vgpu); 287 intel_vgpu_clean_display(vgpu); 288 intel_vgpu_clean_opregion(vgpu); 289 intel_vgpu_reset_ggtt(vgpu, true); 290 intel_vgpu_clean_gtt(vgpu); 291 intel_gvt_hypervisor_detach_vgpu(vgpu); 292 intel_vgpu_free_resource(vgpu); 293 intel_vgpu_clean_mmio(vgpu); 294 intel_vgpu_dmabuf_cleanup(vgpu); 295 mutex_unlock(&vgpu->vgpu_lock); 296 297 mutex_lock(&gvt->lock); 298 idr_remove(&gvt->vgpu_idr, vgpu->id); 299 if (idr_is_empty(&gvt->vgpu_idr)) 300 intel_gvt_clean_irq(gvt); 301 intel_gvt_update_vgpu_types(gvt); 302 mutex_unlock(&gvt->lock); 303 304 vfree(vgpu); 305 } 306 307 #define IDLE_VGPU_IDR 0 308 309 /** 310 * intel_gvt_create_idle_vgpu - create an idle virtual GPU 311 * @gvt: GVT device 312 * 313 * This function is called when user wants to create an idle virtual GPU. 314 * 315 * Returns: 316 * pointer to intel_vgpu, error pointer if failed. 317 */ 318 struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt) 319 { 320 struct intel_vgpu *vgpu; 321 enum intel_engine_id i; 322 int ret; 323 324 vgpu = vzalloc(sizeof(*vgpu)); 325 if (!vgpu) 326 return ERR_PTR(-ENOMEM); 327 328 vgpu->id = IDLE_VGPU_IDR; 329 vgpu->gvt = gvt; 330 mutex_init(&vgpu->vgpu_lock); 331 332 for (i = 0; i < I915_NUM_ENGINES; i++) 333 INIT_LIST_HEAD(&vgpu->submission.workload_q_head[i]); 334 335 ret = intel_vgpu_init_sched_policy(vgpu); 336 if (ret) 337 goto out_free_vgpu; 338 339 vgpu->active = false; 340 341 return vgpu; 342 343 out_free_vgpu: 344 vfree(vgpu); 345 return ERR_PTR(ret); 346 } 347 348 /** 349 * intel_gvt_destroy_vgpu - destroy an idle virtual GPU 350 * @vgpu: virtual GPU 351 * 352 * This function is called when user wants to destroy an idle virtual GPU. 353 * 354 */ 355 void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu) 356 { 357 mutex_lock(&vgpu->vgpu_lock); 358 intel_vgpu_clean_sched_policy(vgpu); 359 mutex_unlock(&vgpu->vgpu_lock); 360 361 vfree(vgpu); 362 } 363 364 static struct intel_vgpu *__intel_gvt_create_vgpu(struct intel_gvt *gvt, 365 struct intel_vgpu_creation_params *param) 366 { 367 struct intel_vgpu *vgpu; 368 int ret; 369 370 gvt_dbg_core("handle %llu low %llu MB high %llu MB fence %llu\n", 371 param->handle, param->low_gm_sz, param->high_gm_sz, 372 param->fence_sz); 373 374 vgpu = vzalloc(sizeof(*vgpu)); 375 if (!vgpu) 376 return ERR_PTR(-ENOMEM); 377 378 idr_preload(GFP_KERNEL); 379 ret = idr_alloc(&gvt->vgpu_idr, vgpu, IDLE_VGPU_IDR + 1, GVT_MAX_VGPU, 380 GFP_KERNEL); 381 idr_preload_end(); 382 if (ret < 0) 383 goto out_free_vgpu; 384 385 vgpu->id = ret; 386 vgpu->handle = param->handle; 387 vgpu->gvt = gvt; 388 vgpu->sched_ctl.weight = param->weight; 389 mutex_init(&vgpu->vgpu_lock); 390 mutex_init(&vgpu->dmabuf_lock); 391 INIT_LIST_HEAD(&vgpu->dmabuf_obj_list_head); 392 INIT_RADIX_TREE(&vgpu->page_track_tree, GFP_KERNEL); 393 idr_init(&vgpu->object_idr); 394 intel_vgpu_init_cfg_space(vgpu, param->primary); 395 396 ret = intel_vgpu_init_mmio(vgpu); 397 if (ret) 398 goto out_clean_idr; 399 400 ret = intel_vgpu_alloc_resource(vgpu, param); 401 if (ret) 402 goto out_clean_vgpu_mmio; 403 404 populate_pvinfo_page(vgpu); 405 406 ret = intel_gvt_hypervisor_attach_vgpu(vgpu); 407 if (ret) 408 goto out_clean_vgpu_resource; 409 410 ret = intel_vgpu_init_gtt(vgpu); 411 if (ret) 412 goto out_detach_hypervisor_vgpu; 413 414 ret = intel_vgpu_init_opregion(vgpu); 415 if (ret) 416 goto out_clean_gtt; 417 418 ret = intel_vgpu_init_display(vgpu, param->resolution); 419 if (ret) 420 goto out_clean_opregion; 421 422 ret = intel_vgpu_setup_submission(vgpu); 423 if (ret) 424 goto out_clean_display; 425 426 ret = intel_vgpu_init_sched_policy(vgpu); 427 if (ret) 428 goto out_clean_submission; 429 430 intel_gvt_debugfs_add_vgpu(vgpu); 431 432 ret = intel_gvt_hypervisor_set_opregion(vgpu); 433 if (ret) 434 goto out_clean_sched_policy; 435 436 /*TODO: add more platforms support */ 437 if (IS_SKYLAKE(gvt->dev_priv) || IS_KABYLAKE(gvt->dev_priv)) 438 ret = intel_gvt_hypervisor_set_edid(vgpu, PORT_D); 439 if (ret) 440 goto out_clean_sched_policy; 441 442 return vgpu; 443 444 out_clean_sched_policy: 445 intel_vgpu_clean_sched_policy(vgpu); 446 out_clean_submission: 447 intel_vgpu_clean_submission(vgpu); 448 out_clean_display: 449 intel_vgpu_clean_display(vgpu); 450 out_clean_opregion: 451 intel_vgpu_clean_opregion(vgpu); 452 out_clean_gtt: 453 intel_vgpu_clean_gtt(vgpu); 454 out_detach_hypervisor_vgpu: 455 intel_gvt_hypervisor_detach_vgpu(vgpu); 456 out_clean_vgpu_resource: 457 intel_vgpu_free_resource(vgpu); 458 out_clean_vgpu_mmio: 459 intel_vgpu_clean_mmio(vgpu); 460 out_clean_idr: 461 idr_remove(&gvt->vgpu_idr, vgpu->id); 462 out_free_vgpu: 463 vfree(vgpu); 464 return ERR_PTR(ret); 465 } 466 467 /** 468 * intel_gvt_create_vgpu - create a virtual GPU 469 * @gvt: GVT device 470 * @type: type of the vGPU to create 471 * 472 * This function is called when user wants to create a virtual GPU. 473 * 474 * Returns: 475 * pointer to intel_vgpu, error pointer if failed. 476 */ 477 struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt, 478 struct intel_vgpu_type *type) 479 { 480 struct intel_vgpu_creation_params param; 481 struct intel_vgpu *vgpu; 482 483 param.handle = 0; 484 param.primary = 1; 485 param.low_gm_sz = type->low_gm_size; 486 param.high_gm_sz = type->high_gm_size; 487 param.fence_sz = type->fence; 488 param.weight = type->weight; 489 param.resolution = type->resolution; 490 491 /* XXX current param based on MB */ 492 param.low_gm_sz = BYTES_TO_MB(param.low_gm_sz); 493 param.high_gm_sz = BYTES_TO_MB(param.high_gm_sz); 494 495 mutex_lock(&gvt->lock); 496 vgpu = __intel_gvt_create_vgpu(gvt, ¶m); 497 if (!IS_ERR(vgpu)) 498 /* calculate left instance change for types */ 499 intel_gvt_update_vgpu_types(gvt); 500 mutex_unlock(&gvt->lock); 501 502 return vgpu; 503 } 504 505 /** 506 * intel_gvt_reset_vgpu_locked - reset a virtual GPU by DMLR or GT reset 507 * @vgpu: virtual GPU 508 * @dmlr: vGPU Device Model Level Reset or GT Reset 509 * @engine_mask: engines to reset for GT reset 510 * 511 * This function is called when user wants to reset a virtual GPU through 512 * device model reset or GT reset. The caller should hold the vgpu lock. 513 * 514 * vGPU Device Model Level Reset (DMLR) simulates the PCI level reset to reset 515 * the whole vGPU to default state as when it is created. This vGPU function 516 * is required both for functionary and security concerns.The ultimate goal 517 * of vGPU FLR is that reuse a vGPU instance by virtual machines. When we 518 * assign a vGPU to a virtual machine we must isse such reset first. 519 * 520 * Full GT Reset and Per-Engine GT Reset are soft reset flow for GPU engines 521 * (Render, Blitter, Video, Video Enhancement). It is defined by GPU Spec. 522 * Unlike the FLR, GT reset only reset particular resource of a vGPU per 523 * the reset request. Guest driver can issue a GT reset by programming the 524 * virtual GDRST register to reset specific virtual GPU engine or all 525 * engines. 526 * 527 * The parameter dev_level is to identify if we will do DMLR or GT reset. 528 * The parameter engine_mask is to specific the engines that need to be 529 * resetted. If value ALL_ENGINES is given for engine_mask, it means 530 * the caller requests a full GT reset that we will reset all virtual 531 * GPU engines. For FLR, engine_mask is ignored. 532 */ 533 void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr, 534 intel_engine_mask_t engine_mask) 535 { 536 struct intel_gvt *gvt = vgpu->gvt; 537 struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler; 538 intel_engine_mask_t resetting_eng = dmlr ? ALL_ENGINES : engine_mask; 539 540 gvt_dbg_core("------------------------------------------\n"); 541 gvt_dbg_core("resseting vgpu%d, dmlr %d, engine_mask %08x\n", 542 vgpu->id, dmlr, engine_mask); 543 544 vgpu->resetting_eng = resetting_eng; 545 546 intel_vgpu_stop_schedule(vgpu); 547 /* 548 * The current_vgpu will set to NULL after stopping the 549 * scheduler when the reset is triggered by current vgpu. 550 */ 551 if (scheduler->current_vgpu == NULL) { 552 mutex_unlock(&vgpu->vgpu_lock); 553 intel_gvt_wait_vgpu_idle(vgpu); 554 mutex_lock(&vgpu->vgpu_lock); 555 } 556 557 intel_vgpu_reset_submission(vgpu, resetting_eng); 558 /* full GPU reset or device model level reset */ 559 if (engine_mask == ALL_ENGINES || dmlr) { 560 intel_vgpu_select_submission_ops(vgpu, ALL_ENGINES, 0); 561 intel_vgpu_invalidate_ppgtt(vgpu); 562 /*fence will not be reset during virtual reset */ 563 if (dmlr) { 564 intel_vgpu_reset_gtt(vgpu); 565 intel_vgpu_reset_resource(vgpu); 566 } 567 568 intel_vgpu_reset_mmio(vgpu, dmlr); 569 populate_pvinfo_page(vgpu); 570 intel_vgpu_reset_display(vgpu); 571 572 if (dmlr) { 573 intel_vgpu_reset_cfg_space(vgpu); 574 /* only reset the failsafe mode when dmlr reset */ 575 vgpu->failsafe = false; 576 vgpu->pv_notified = false; 577 } 578 } 579 580 vgpu->resetting_eng = 0; 581 gvt_dbg_core("reset vgpu%d done\n", vgpu->id); 582 gvt_dbg_core("------------------------------------------\n"); 583 } 584 585 /** 586 * intel_gvt_reset_vgpu - reset a virtual GPU (Function Level) 587 * @vgpu: virtual GPU 588 * 589 * This function is called when user wants to reset a virtual GPU. 590 * 591 */ 592 void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu) 593 { 594 mutex_lock(&vgpu->vgpu_lock); 595 intel_gvt_reset_vgpu_locked(vgpu, true, 0); 596 mutex_unlock(&vgpu->vgpu_lock); 597 } 598
Indexes created Fri Sep 26 20:09:58 GMT 2025