1 /* 2 * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 * 23 * Authors: 24 * Kevin Tian <kevin.tian@intel.com> 25 * Eddie Dong <eddie.dong@intel.com> 26 * 27 * Contributors: 28 * Niu Bing <bing.niu@intel.com> 29 * Zhi Wang <zhi.a.wang@intel.com> 30 * 31 */ 32 33 #ifndef _GVT_H_ 34 #define _GVT_H_ 35 36 #include <uapi/linux/pci_regs.h> 37 #include <linux/vfio.h> 38 #include <linux/mdev.h> 39 40 #include <asm/kvm_page_track.h> 41 42 #include "gt/intel_gt.h" 43 #include "intel_gvt.h" 44 45 #include "debug.h" 46 #include "mmio.h" 47 #include "reg.h" 48 #include "interrupt.h" 49 #include "gtt.h" 50 #include "display.h" 51 #include "edid.h" 52 #include "execlist.h" 53 #include "scheduler.h" 54 #include "sched_policy.h" 55 #include "mmio_context.h" 56 #include "cmd_parser.h" 57 #include "fb_decoder.h" 58 #include "dmabuf.h" 59 #include "page_track.h" 60 61 #define GVT_MAX_VGPU 8 62 63 struct engine_mmio; 64 65 /* Describe per-platform limitations. */ 66 struct intel_gvt_device_info { 67 u32 max_support_vgpus; 68 u32 cfg_space_size; 69 u32 mmio_size; 70 u32 mmio_bar; 71 unsigned long msi_cap_offset; 72 u32 gtt_start_offset; 73 u32 gtt_entry_size; 74 u32 gtt_entry_size_shift; 75 int gmadr_bytes_in_cmd; 76 u32 max_surface_size; 77 }; 78 79 /* GM resources owned by a vGPU */ 80 struct intel_vgpu_gm { 81 u64 aperture_sz; 82 u64 hidden_sz; 83 struct drm_mm_node low_gm_node; 84 struct drm_mm_node high_gm_node; 85 }; 86 87 #define INTEL_GVT_MAX_NUM_FENCES 32 88 89 /* Fences owned by a vGPU */ 90 struct intel_vgpu_fence { 91 struct i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES]; 92 u32 size; 93 }; 94 95 struct intel_vgpu_mmio { 96 void *vreg; 97 }; 98 99 #define INTEL_GVT_MAX_BAR_NUM 4 100 101 struct intel_vgpu_pci_bar { 102 u64 size; 103 bool tracked; 104 }; 105 106 struct intel_vgpu_cfg_space { 107 unsigned char virtual_cfg_space[PCI_CFG_SPACE_EXP_SIZE]; 108 struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM]; 109 u32 pmcsr_off; 110 }; 111 112 #define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space) 113 114 struct intel_vgpu_irq { 115 bool irq_warn_once[INTEL_GVT_EVENT_MAX]; 116 DECLARE_BITMAP(flip_done_event[I915_MAX_PIPES], 117 INTEL_GVT_EVENT_MAX); 118 }; 119 120 struct intel_vgpu_opregion { 121 void *va; 122 u32 gfn[INTEL_GVT_OPREGION_PAGES]; 123 }; 124 125 #define vgpu_opregion(vgpu) (&(vgpu->opregion)) 126 127 struct intel_vgpu_display { 128 struct intel_vgpu_i2c_edid i2c_edid; 129 struct intel_vgpu_port ports[I915_MAX_PORTS]; 130 struct intel_vgpu_sbi sbi; 131 enum port port_num; 132 }; 133 134 struct vgpu_sched_ctl { 135 int weight; 136 }; 137 138 enum { 139 INTEL_VGPU_EXECLIST_SUBMISSION = 1, 140 INTEL_VGPU_GUC_SUBMISSION, 141 }; 142 143 struct intel_vgpu_submission_ops { 144 const char *name; 145 int (*init)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); 146 void (*clean)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); 147 void (*reset)(struct intel_vgpu *vgpu, intel_engine_mask_t engine_mask); 148 }; 149 150 struct intel_vgpu_submission { 151 struct intel_vgpu_execlist execlist[I915_NUM_ENGINES]; 152 struct list_head workload_q_head[I915_NUM_ENGINES]; 153 struct intel_context *shadow[I915_NUM_ENGINES]; 154 struct kmem_cache *workloads; 155 atomic_t running_workload_num; 156 union { 157 u64 i915_context_pml4; 158 u64 i915_context_pdps[GEN8_3LVL_PDPES]; 159 }; 160 DECLARE_BITMAP(shadow_ctx_desc_updated, I915_NUM_ENGINES); 161 DECLARE_BITMAP(tlb_handle_pending, I915_NUM_ENGINES); 162 void *ring_scan_buffer[I915_NUM_ENGINES]; 163 int ring_scan_buffer_size[I915_NUM_ENGINES]; 164 const struct intel_vgpu_submission_ops *ops; 165 int virtual_submission_interface; 166 bool active; 167 struct { 168 u32 lrca; 169 bool valid; 170 u64 ring_context_gpa; 171 } last_ctx[I915_NUM_ENGINES]; 172 }; 173 174 #define KVMGT_DEBUGFS_FILENAME "kvmgt_nr_cache_entries" 175 176 enum { 177 INTEL_VGPU_STATUS_ATTACHED = 0, 178 INTEL_VGPU_STATUS_ACTIVE, 179 INTEL_VGPU_STATUS_NR_BITS, 180 }; 181 182 struct intel_vgpu { 183 struct vfio_device vfio_device; 184 struct intel_gvt *gvt; 185 struct mutex vgpu_lock; 186 int id; 187 DECLARE_BITMAP(status, INTEL_VGPU_STATUS_NR_BITS); 188 bool pv_notified; 189 bool failsafe; 190 unsigned int resetting_eng; 191 192 /* Both sched_data and sched_ctl can be seen a part of the global gvt 193 * scheduler structure. So below 2 vgpu data are protected 194 * by sched_lock, not vgpu_lock. 195 */ 196 void *sched_data; 197 struct vgpu_sched_ctl sched_ctl; 198 199 struct intel_vgpu_fence fence; 200 struct intel_vgpu_gm gm; 201 struct intel_vgpu_cfg_space cfg_space; 202 struct intel_vgpu_mmio mmio; 203 struct intel_vgpu_irq irq; 204 struct intel_vgpu_gtt gtt; 205 struct intel_vgpu_opregion opregion; 206 struct intel_vgpu_display display; 207 struct intel_vgpu_submission submission; 208 struct radix_tree_root page_track_tree; 209 u32 hws_pga[I915_NUM_ENGINES]; 210 /* Set on PCI_D3, reset on DMLR, not reflecting the actual PM state */ 211 bool d3_entered; 212 213 struct dentry *debugfs; 214 215 struct list_head dmabuf_obj_list_head; 216 struct mutex dmabuf_lock; 217 struct idr object_idr; 218 struct intel_vgpu_vblank_timer vblank_timer; 219 220 u32 scan_nonprivbb; 221 222 struct vfio_region *region; 223 int num_regions; 224 struct eventfd_ctx *msi_trigger; 225 226 /* 227 * Two caches are used to avoid mapping duplicated pages (eg. 228 * scratch pages). This help to reduce dma setup overhead. 229 */ 230 struct rb_root gfn_cache; 231 struct rb_root dma_addr_cache; 232 unsigned long nr_cache_entries; 233 struct mutex cache_lock; 234 235 struct kvm_page_track_notifier_node track_node; 236 #define NR_BKT (1 << 18) 237 struct hlist_head ptable[NR_BKT]; 238 #undef NR_BKT 239 }; 240 241 /* validating GM healthy status*/ 242 #define vgpu_is_vm_unhealthy(ret_val) \ 243 (((ret_val) == -EBADRQC) || ((ret_val) == -EFAULT)) 244 245 struct intel_gvt_gm { 246 unsigned long vgpu_allocated_low_gm_size; 247 unsigned long vgpu_allocated_high_gm_size; 248 }; 249 250 struct intel_gvt_fence { 251 unsigned long vgpu_allocated_fence_num; 252 }; 253 254 /* Special MMIO blocks. */ 255 struct gvt_mmio_block { 256 i915_reg_t offset; 257 unsigned int size; 258 gvt_mmio_func read; 259 gvt_mmio_func write; 260 }; 261 262 #define INTEL_GVT_MMIO_HASH_BITS 11 263 264 struct intel_gvt_mmio { 265 u16 *mmio_attribute; 266 /* Register contains RO bits */ 267 #define F_RO (1 << 0) 268 /* Register contains graphics address */ 269 #define F_GMADR (1 << 1) 270 /* Mode mask registers with high 16 bits as the mask bits */ 271 #define F_MODE_MASK (1 << 2) 272 /* This reg can be accessed by GPU commands */ 273 #define F_CMD_ACCESS (1 << 3) 274 /* This reg has been accessed by a VM */ 275 #define F_ACCESSED (1 << 4) 276 /* This reg requires save & restore during host PM suspend/resume */ 277 #define F_PM_SAVE (1 << 5) 278 /* This reg could be accessed by unaligned address */ 279 #define F_UNALIGN (1 << 6) 280 /* This reg is in GVT's mmio save-restor list and in hardware 281 * logical context image 282 */ 283 #define F_SR_IN_CTX (1 << 7) 284 /* Value of command write of this reg needs to be patched */ 285 #define F_CMD_WRITE_PATCH (1 << 8) 286 287 struct gvt_mmio_block *mmio_block; 288 unsigned int num_mmio_block; 289 290 DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS); 291 unsigned long num_tracked_mmio; 292 }; 293 294 struct intel_gvt_firmware { 295 void *cfg_space; 296 void *mmio; 297 bool firmware_loaded; 298 }; 299 300 struct intel_vgpu_config { 301 unsigned int low_mm; 302 unsigned int high_mm; 303 unsigned int fence; 304 305 /* 306 * A vGPU with a weight of 8 will get twice as much GPU as a vGPU with 307 * a weight of 4 on a contended host, different vGPU type has different 308 * weight set. Legal weights range from 1 to 16. 309 */ 310 unsigned int weight; 311 enum intel_vgpu_edid edid; 312 const char *name; 313 }; 314 315 struct intel_vgpu_type { 316 struct mdev_type type; 317 char name[16]; 318 const struct intel_vgpu_config *conf; 319 }; 320 321 struct intel_gvt { 322 /* GVT scope lock, protect GVT itself, and all resource currently 323 * not yet protected by special locks(vgpu and scheduler lock). 324 */ 325 struct mutex lock; 326 /* scheduler scope lock, protect gvt and vgpu schedule related data */ 327 struct mutex sched_lock; 328 329 struct intel_gt *gt; 330 struct idr vgpu_idr; /* vGPU IDR pool */ 331 332 struct intel_gvt_device_info device_info; 333 struct intel_gvt_gm gm; 334 struct intel_gvt_fence fence; 335 struct intel_gvt_mmio mmio; 336 struct intel_gvt_firmware firmware; 337 struct intel_gvt_irq irq; 338 struct intel_gvt_gtt gtt; 339 struct intel_gvt_workload_scheduler scheduler; 340 struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES]; 341 DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS); 342 struct mdev_parent parent; 343 struct mdev_type **mdev_types; 344 struct intel_vgpu_type *types; 345 unsigned int num_types; 346 struct intel_vgpu *idle_vgpu; 347 348 struct task_struct *service_thread; 349 wait_queue_head_t service_thread_wq; 350 351 /* service_request is always used in bit operation, we should always 352 * use it with atomic bit ops so that no need to use gvt big lock. 353 */ 354 unsigned long service_request; 355 356 struct { 357 struct engine_mmio *mmio; 358 int ctx_mmio_count[I915_NUM_ENGINES]; 359 u32 *tlb_mmio_offset_list; 360 u32 tlb_mmio_offset_list_cnt; 361 u32 *mocs_mmio_offset_list; 362 u32 mocs_mmio_offset_list_cnt; 363 } engine_mmio_list; 364 bool is_reg_whitelist_updated; 365 366 struct dentry *debugfs_root; 367 }; 368 369 enum { 370 /* Scheduling trigger by timer */ 371 INTEL_GVT_REQUEST_SCHED = 0, 372 373 /* Scheduling trigger by event */ 374 INTEL_GVT_REQUEST_EVENT_SCHED = 1, 375 376 /* per-vGPU vblank emulation request */ 377 INTEL_GVT_REQUEST_EMULATE_VBLANK = 2, 378 INTEL_GVT_REQUEST_EMULATE_VBLANK_MAX = INTEL_GVT_REQUEST_EMULATE_VBLANK 379 + GVT_MAX_VGPU, 380 }; 381 382 static inline void intel_gvt_request_service(struct intel_gvt *gvt, 383 int service) 384 { 385 set_bit(service, (void *)&gvt->service_request); 386 wake_up(&gvt->service_thread_wq); 387 } 388 389 void intel_gvt_free_firmware(struct intel_gvt *gvt); 390 int intel_gvt_load_firmware(struct intel_gvt *gvt); 391 392 /* Aperture/GM space definitions for GVT device */ 393 #define MB_TO_BYTES(mb) ((mb) << 20ULL) 394 #define BYTES_TO_MB(b) ((b) >> 20ULL) 395 396 #define HOST_LOW_GM_SIZE MB_TO_BYTES(128) 397 #define HOST_HIGH_GM_SIZE MB_TO_BYTES(384) 398 #define HOST_FENCE 4 399 400 #define gvt_to_ggtt(gvt) ((gvt)->gt->ggtt) 401 402 /* Aperture/GM space definitions for GVT device */ 403 #define gvt_aperture_sz(gvt) gvt_to_ggtt(gvt)->mappable_end 404 #define gvt_aperture_pa_base(gvt) gvt_to_ggtt(gvt)->gmadr.start 405 406 #define gvt_ggtt_gm_sz(gvt) gvt_to_ggtt(gvt)->vm.total 407 #define gvt_ggtt_sz(gvt) (gvt_to_ggtt(gvt)->vm.total >> PAGE_SHIFT << 3) 408 #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt)) 409 410 #define gvt_aperture_gmadr_base(gvt) (0) 411 #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \ 412 + gvt_aperture_sz(gvt) - 1) 413 414 #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \ 415 + gvt_aperture_sz(gvt)) 416 #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \ 417 + gvt_hidden_sz(gvt) - 1) 418 419 #define gvt_fence_sz(gvt) (gvt_to_ggtt(gvt)->num_fences) 420 421 /* Aperture/GM space definitions for vGPU */ 422 #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start) 423 #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start) 424 #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz) 425 #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz) 426 427 #define vgpu_aperture_pa_base(vgpu) \ 428 (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu)) 429 430 #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz) 431 432 #define vgpu_aperture_pa_end(vgpu) \ 433 (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) 434 435 #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu)) 436 #define vgpu_aperture_gmadr_end(vgpu) \ 437 (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) 438 439 #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu)) 440 #define vgpu_hidden_gmadr_end(vgpu) \ 441 (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1) 442 443 #define vgpu_fence_sz(vgpu) (vgpu->fence.size) 444 445 /* ring context size i.e. the first 0x50 dwords*/ 446 #define RING_CTX_SIZE 320 447 448 int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu, 449 const struct intel_vgpu_config *conf); 450 void intel_vgpu_reset_resource(struct intel_vgpu *vgpu); 451 void intel_vgpu_free_resource(struct intel_vgpu *vgpu); 452 void intel_vgpu_write_fence(struct intel_vgpu *vgpu, 453 u32 fence, u64 value); 454 455 /* 456 * Macros for easily accessing vGPU virtual/shadow register. 457 * Explicitly separate use for typed MMIO reg or real offset. 458 */ 459 #define vgpu_vreg_t(vgpu, reg) \ 460 (*(u32 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) 461 #define vgpu_vreg(vgpu, offset) \ 462 (*(u32 *)(vgpu->mmio.vreg + (offset))) 463 #define vgpu_vreg64_t(vgpu, reg) \ 464 (*(u64 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) 465 #define vgpu_vreg64(vgpu, offset) \ 466 (*(u64 *)(vgpu->mmio.vreg + (offset))) 467 468 #define for_each_active_vgpu(gvt, vgpu, id) \ 469 idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \ 470 for_each_if(test_bit(INTEL_VGPU_STATUS_ACTIVE, vgpu->status)) 471 472 static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu, 473 u32 offset, u32 val, bool low) 474 { 475 u32 *pval; 476 477 /* BAR offset should be 32 bits algiend */ 478 offset = rounddown(offset, 4); 479 pval = (u32 *)(vgpu_cfg_space(vgpu) + offset); 480 481 if (low) { 482 /* 483 * only update bit 31 - bit 4, 484 * leave the bit 3 - bit 0 unchanged. 485 */ 486 *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0)); 487 } else { 488 *pval = val; 489 } 490 } 491 492 int intel_gvt_init_vgpu_types(struct intel_gvt *gvt); 493 void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt); 494 495 struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt); 496 void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu); 497 int intel_gvt_create_vgpu(struct intel_vgpu *vgpu, 498 const struct intel_vgpu_config *conf); 499 void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu); 500 void intel_gvt_release_vgpu(struct intel_vgpu *vgpu); 501 void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr, 502 intel_engine_mask_t engine_mask); 503 void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu); 504 void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu); 505 void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu); 506 507 int intel_gvt_set_opregion(struct intel_vgpu *vgpu); 508 int intel_gvt_set_edid(struct intel_vgpu *vgpu, int port_num); 509 510 /* validating GM functions */ 511 #define vgpu_gmadr_is_aperture(vgpu, gmadr) \ 512 ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \ 513 (gmadr <= vgpu_aperture_gmadr_end(vgpu))) 514 515 #define vgpu_gmadr_is_hidden(vgpu, gmadr) \ 516 ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \ 517 (gmadr <= vgpu_hidden_gmadr_end(vgpu))) 518 519 #define vgpu_gmadr_is_valid(vgpu, gmadr) \ 520 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \ 521 (vgpu_gmadr_is_hidden(vgpu, gmadr)))) 522 523 #define gvt_gmadr_is_aperture(gvt, gmadr) \ 524 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \ 525 (gmadr <= gvt_aperture_gmadr_end(gvt))) 526 527 #define gvt_gmadr_is_hidden(gvt, gmadr) \ 528 ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \ 529 (gmadr <= gvt_hidden_gmadr_end(gvt))) 530 531 #define gvt_gmadr_is_valid(gvt, gmadr) \ 532 (gvt_gmadr_is_aperture(gvt, gmadr) || \ 533 gvt_gmadr_is_hidden(gvt, gmadr)) 534 535 bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size); 536 537 void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu, 538 bool primary); 539 void intel_vgpu_reset_cfg_space(struct intel_vgpu *vgpu); 540 541 int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, 542 void *p_data, unsigned int bytes); 543 544 int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, 545 void *p_data, unsigned int bytes); 546 547 void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected); 548 549 static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar) 550 { 551 /* We are 64bit bar. */ 552 return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) & 553 PCI_BASE_ADDRESS_MEM_MASK; 554 } 555 556 void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu); 557 int intel_vgpu_init_opregion(struct intel_vgpu *vgpu); 558 int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa); 559 560 int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci); 561 void populate_pvinfo_page(struct intel_vgpu *vgpu); 562 563 int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload); 564 void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason); 565 void intel_vgpu_detach_regions(struct intel_vgpu *vgpu); 566 567 enum { 568 GVT_FAILSAFE_UNSUPPORTED_GUEST, 569 GVT_FAILSAFE_INSUFFICIENT_RESOURCE, 570 GVT_FAILSAFE_GUEST_ERR, 571 }; 572 573 static inline void mmio_hw_access_pre(struct intel_gt *gt) 574 { 575 intel_runtime_pm_get(gt->uncore->rpm); 576 } 577 578 static inline void mmio_hw_access_post(struct intel_gt *gt) 579 { 580 intel_runtime_pm_put_unchecked(gt->uncore->rpm); 581 } 582 583 /** 584 * intel_gvt_mmio_set_accessed - mark a MMIO has been accessed 585 * @gvt: a GVT device 586 * @offset: register offset 587 * 588 */ 589 static inline void intel_gvt_mmio_set_accessed( 590 struct intel_gvt *gvt, unsigned int offset) 591 { 592 gvt->mmio.mmio_attribute[offset >> 2] |= F_ACCESSED; 593 } 594 595 /** 596 * intel_gvt_mmio_is_cmd_accessible - if a MMIO could be accessed by command 597 * @gvt: a GVT device 598 * @offset: register offset 599 * 600 * Returns: 601 * True if an MMIO is able to be accessed by GPU commands 602 */ 603 static inline bool intel_gvt_mmio_is_cmd_accessible( 604 struct intel_gvt *gvt, unsigned int offset) 605 { 606 return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_ACCESS; 607 } 608 609 /** 610 * intel_gvt_mmio_set_cmd_accessible - 611 * mark a MMIO could be accessible by command 612 * @gvt: a GVT device 613 * @offset: register offset 614 * 615 */ 616 static inline void intel_gvt_mmio_set_cmd_accessible( 617 struct intel_gvt *gvt, unsigned int offset) 618 { 619 gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_ACCESS; 620 } 621 622 /** 623 * intel_gvt_mmio_is_unalign - mark a MMIO could be accessed unaligned 624 * @gvt: a GVT device 625 * @offset: register offset 626 * 627 */ 628 static inline bool intel_gvt_mmio_is_unalign( 629 struct intel_gvt *gvt, unsigned int offset) 630 { 631 return gvt->mmio.mmio_attribute[offset >> 2] & F_UNALIGN; 632 } 633 634 /** 635 * intel_gvt_mmio_has_mode_mask - if a MMIO has a mode mask 636 * @gvt: a GVT device 637 * @offset: register offset 638 * 639 * Returns: 640 * True if a MMIO has a mode mask in its higher 16 bits, false if it isn't. 641 * 642 */ 643 static inline bool intel_gvt_mmio_has_mode_mask( 644 struct intel_gvt *gvt, unsigned int offset) 645 { 646 return gvt->mmio.mmio_attribute[offset >> 2] & F_MODE_MASK; 647 } 648 649 /** 650 * intel_gvt_mmio_is_sr_in_ctx - 651 * check if an MMIO has F_SR_IN_CTX mask 652 * @gvt: a GVT device 653 * @offset: register offset 654 * 655 * Returns: 656 * True if an MMIO has an F_SR_IN_CTX mask, false if it isn't. 657 * 658 */ 659 static inline bool intel_gvt_mmio_is_sr_in_ctx( 660 struct intel_gvt *gvt, unsigned int offset) 661 { 662 return gvt->mmio.mmio_attribute[offset >> 2] & F_SR_IN_CTX; 663 } 664 665 /** 666 * intel_gvt_mmio_set_sr_in_ctx - 667 * mask an MMIO in GVT's mmio save-restore list and also 668 * in hardware logical context image 669 * @gvt: a GVT device 670 * @offset: register offset 671 * 672 */ 673 static inline void intel_gvt_mmio_set_sr_in_ctx( 674 struct intel_gvt *gvt, unsigned int offset) 675 { 676 gvt->mmio.mmio_attribute[offset >> 2] |= F_SR_IN_CTX; 677 } 678 679 void intel_gvt_debugfs_add_vgpu(struct intel_vgpu *vgpu); 680 /** 681 * intel_gvt_mmio_set_cmd_write_patch - 682 * mark an MMIO if its cmd write needs to be 683 * patched 684 * @gvt: a GVT device 685 * @offset: register offset 686 * 687 */ 688 static inline void intel_gvt_mmio_set_cmd_write_patch( 689 struct intel_gvt *gvt, unsigned int offset) 690 { 691 gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_WRITE_PATCH; 692 } 693 694 /** 695 * intel_gvt_mmio_is_cmd_write_patch - check if an mmio's cmd access needs to 696 * be patched 697 * @gvt: a GVT device 698 * @offset: register offset 699 * 700 * Returns: 701 * True if GPU command write to an MMIO should be patched. 702 */ 703 static inline bool intel_gvt_mmio_is_cmd_write_patch( 704 struct intel_gvt *gvt, unsigned int offset) 705 { 706 return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_WRITE_PATCH; 707 } 708 709 /** 710 * intel_gvt_read_gpa - copy data from GPA to host data buffer 711 * @vgpu: a vGPU 712 * @gpa: guest physical address 713 * @buf: host data buffer 714 * @len: data length 715 * 716 * Returns: 717 * Zero on success, negative error code if failed. 718 */ 719 static inline int intel_gvt_read_gpa(struct intel_vgpu *vgpu, unsigned long gpa, 720 void *buf, unsigned long len) 721 { 722 if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status)) 723 return -ESRCH; 724 return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, false); 725 } 726 727 /** 728 * intel_gvt_write_gpa - copy data from host data buffer to GPA 729 * @vgpu: a vGPU 730 * @gpa: guest physical address 731 * @buf: host data buffer 732 * @len: data length 733 * 734 * Returns: 735 * Zero on success, negative error code if failed. 736 */ 737 static inline int intel_gvt_write_gpa(struct intel_vgpu *vgpu, 738 unsigned long gpa, void *buf, unsigned long len) 739 { 740 if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status)) 741 return -ESRCH; 742 return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, true); 743 } 744 745 void intel_gvt_debugfs_remove_vgpu(struct intel_vgpu *vgpu); 746 void intel_gvt_debugfs_init(struct intel_gvt *gvt); 747 void intel_gvt_debugfs_clean(struct intel_gvt *gvt); 748 749 int intel_gvt_page_track_add(struct intel_vgpu *info, u64 gfn); 750 int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn); 751 int intel_gvt_dma_pin_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr); 752 int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, 753 unsigned long size, dma_addr_t *dma_addr); 754 void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu, 755 dma_addr_t dma_addr); 756 757 #include "trace.h" 758 759 #endif 760