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 "i915_drv.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 /* Describe per-platform limitations. */ 64 struct intel_gvt_device_info { 65 u32 max_support_vgpus; 66 u32 cfg_space_size; 67 u32 mmio_size; 68 u32 mmio_bar; 69 unsigned long msi_cap_offset; 70 u32 gtt_start_offset; 71 u32 gtt_entry_size; 72 u32 gtt_entry_size_shift; 73 int gmadr_bytes_in_cmd; 74 u32 max_surface_size; 75 }; 76 77 /* GM resources owned by a vGPU */ 78 struct intel_vgpu_gm { 79 u64 aperture_sz; 80 u64 hidden_sz; 81 struct drm_mm_node low_gm_node; 82 struct drm_mm_node high_gm_node; 83 }; 84 85 #define INTEL_GVT_MAX_NUM_FENCES 32 86 87 /* Fences owned by a vGPU */ 88 struct intel_vgpu_fence { 89 struct i915_fence_reg *regs[INTEL_GVT_MAX_NUM_FENCES]; 90 u32 base; 91 u32 size; 92 }; 93 94 struct intel_vgpu_mmio { 95 void *vreg; 96 }; 97 98 #define INTEL_GVT_MAX_BAR_NUM 4 99 100 struct intel_vgpu_pci_bar { 101 u64 size; 102 bool tracked; 103 }; 104 105 struct intel_vgpu_cfg_space { 106 unsigned char virtual_cfg_space[PCI_CFG_SPACE_EXP_SIZE]; 107 struct intel_vgpu_pci_bar bar[INTEL_GVT_MAX_BAR_NUM]; 108 u32 pmcsr_off; 109 }; 110 111 #define vgpu_cfg_space(vgpu) ((vgpu)->cfg_space.virtual_cfg_space) 112 113 struct intel_vgpu_irq { 114 bool irq_warn_once[INTEL_GVT_EVENT_MAX]; 115 DECLARE_BITMAP(flip_done_event[I915_MAX_PIPES], 116 INTEL_GVT_EVENT_MAX); 117 }; 118 119 struct intel_vgpu_opregion { 120 bool mapped; 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 *intx_trigger; 225 struct eventfd_ctx *msi_trigger; 226 227 /* 228 * Two caches are used to avoid mapping duplicated pages (eg. 229 * scratch pages). This help to reduce dma setup overhead. 230 */ 231 struct rb_root gfn_cache; 232 struct rb_root dma_addr_cache; 233 unsigned long nr_cache_entries; 234 struct mutex cache_lock; 235 236 struct kvm_page_track_notifier_node track_node; 237 #define NR_BKT (1 << 18) 238 struct hlist_head ptable[NR_BKT]; 239 #undef NR_BKT 240 }; 241 242 /* validating GM healthy status*/ 243 #define vgpu_is_vm_unhealthy(ret_val) \ 244 (((ret_val) == -EBADRQC) || ((ret_val) == -EFAULT)) 245 246 struct intel_gvt_gm { 247 unsigned long vgpu_allocated_low_gm_size; 248 unsigned long vgpu_allocated_high_gm_size; 249 }; 250 251 struct intel_gvt_fence { 252 unsigned long vgpu_allocated_fence_num; 253 }; 254 255 /* Special MMIO blocks. */ 256 struct gvt_mmio_block { 257 unsigned int device; 258 i915_reg_t offset; 259 unsigned int size; 260 gvt_mmio_func read; 261 gvt_mmio_func write; 262 }; 263 264 #define INTEL_GVT_MMIO_HASH_BITS 11 265 266 struct intel_gvt_mmio { 267 u16 *mmio_attribute; 268 /* Register contains RO bits */ 269 #define F_RO (1 << 0) 270 /* Register contains graphics address */ 271 #define F_GMADR (1 << 1) 272 /* Mode mask registers with high 16 bits as the mask bits */ 273 #define F_MODE_MASK (1 << 2) 274 /* This reg can be accessed by GPU commands */ 275 #define F_CMD_ACCESS (1 << 3) 276 /* This reg has been accessed by a VM */ 277 #define F_ACCESSED (1 << 4) 278 /* This reg requires save & restore during host PM suspend/resume */ 279 #define F_PM_SAVE (1 << 5) 280 /* This reg could be accessed by unaligned address */ 281 #define F_UNALIGN (1 << 6) 282 /* This reg is in GVT's mmio save-restor list and in hardware 283 * logical context image 284 */ 285 #define F_SR_IN_CTX (1 << 7) 286 /* Value of command write of this reg needs to be patched */ 287 #define F_CMD_WRITE_PATCH (1 << 8) 288 289 struct gvt_mmio_block *mmio_block; 290 unsigned int num_mmio_block; 291 292 DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS); 293 unsigned long num_tracked_mmio; 294 }; 295 296 struct intel_gvt_firmware { 297 void *cfg_space; 298 void *mmio; 299 bool firmware_loaded; 300 }; 301 302 struct intel_vgpu_config { 303 unsigned int low_mm; 304 unsigned int high_mm; 305 unsigned int fence; 306 307 /* 308 * A vGPU with a weight of 8 will get twice as much GPU as a vGPU with 309 * a weight of 4 on a contended host, different vGPU type has different 310 * weight set. Legal weights range from 1 to 16. 311 */ 312 unsigned int weight; 313 enum intel_vgpu_edid edid; 314 const char *name; 315 }; 316 317 struct intel_vgpu_type { 318 struct mdev_type type; 319 char name[16]; 320 const struct intel_vgpu_config *conf; 321 }; 322 323 struct intel_gvt { 324 /* GVT scope lock, protect GVT itself, and all resource currently 325 * not yet protected by special locks(vgpu and scheduler lock). 326 */ 327 struct mutex lock; 328 /* scheduler scope lock, protect gvt and vgpu schedule related data */ 329 struct mutex sched_lock; 330 331 struct intel_gt *gt; 332 struct idr vgpu_idr; /* vGPU IDR pool */ 333 334 struct intel_gvt_device_info device_info; 335 struct intel_gvt_gm gm; 336 struct intel_gvt_fence fence; 337 struct intel_gvt_mmio mmio; 338 struct intel_gvt_firmware firmware; 339 struct intel_gvt_irq irq; 340 struct intel_gvt_gtt gtt; 341 struct intel_gvt_workload_scheduler scheduler; 342 struct notifier_block shadow_ctx_notifier_block[I915_NUM_ENGINES]; 343 DECLARE_HASHTABLE(cmd_table, GVT_CMD_HASH_BITS); 344 struct mdev_parent parent; 345 struct mdev_type **mdev_types; 346 struct intel_vgpu_type *types; 347 unsigned int num_types; 348 struct intel_vgpu *idle_vgpu; 349 350 struct task_struct *service_thread; 351 wait_queue_head_t service_thread_wq; 352 353 /* service_request is always used in bit operation, we should always 354 * use it with atomic bit ops so that no need to use gvt big lock. 355 */ 356 unsigned long service_request; 357 358 struct { 359 struct engine_mmio *mmio; 360 int ctx_mmio_count[I915_NUM_ENGINES]; 361 u32 *tlb_mmio_offset_list; 362 u32 tlb_mmio_offset_list_cnt; 363 u32 *mocs_mmio_offset_list; 364 u32 mocs_mmio_offset_list_cnt; 365 } engine_mmio_list; 366 bool is_reg_whitelist_updated; 367 368 struct dentry *debugfs_root; 369 }; 370 371 static inline struct intel_gvt *to_gvt(struct drm_i915_private *i915) 372 { 373 return i915->gvt; 374 } 375 376 enum { 377 /* Scheduling trigger by timer */ 378 INTEL_GVT_REQUEST_SCHED = 0, 379 380 /* Scheduling trigger by event */ 381 INTEL_GVT_REQUEST_EVENT_SCHED = 1, 382 383 /* per-vGPU vblank emulation request */ 384 INTEL_GVT_REQUEST_EMULATE_VBLANK = 2, 385 INTEL_GVT_REQUEST_EMULATE_VBLANK_MAX = INTEL_GVT_REQUEST_EMULATE_VBLANK 386 + GVT_MAX_VGPU, 387 }; 388 389 static inline void intel_gvt_request_service(struct intel_gvt *gvt, 390 int service) 391 { 392 set_bit(service, (void *)&gvt->service_request); 393 wake_up(&gvt->service_thread_wq); 394 } 395 396 void intel_gvt_free_firmware(struct intel_gvt *gvt); 397 int intel_gvt_load_firmware(struct intel_gvt *gvt); 398 399 /* Aperture/GM space definitions for GVT device */ 400 #define MB_TO_BYTES(mb) ((mb) << 20ULL) 401 #define BYTES_TO_MB(b) ((b) >> 20ULL) 402 403 #define HOST_LOW_GM_SIZE MB_TO_BYTES(128) 404 #define HOST_HIGH_GM_SIZE MB_TO_BYTES(384) 405 #define HOST_FENCE 4 406 407 #define gvt_to_ggtt(gvt) ((gvt)->gt->ggtt) 408 409 /* Aperture/GM space definitions for GVT device */ 410 #define gvt_aperture_sz(gvt) gvt_to_ggtt(gvt)->mappable_end 411 #define gvt_aperture_pa_base(gvt) gvt_to_ggtt(gvt)->gmadr.start 412 413 #define gvt_ggtt_gm_sz(gvt) gvt_to_ggtt(gvt)->vm.total 414 #define gvt_ggtt_sz(gvt) (gvt_to_ggtt(gvt)->vm.total >> PAGE_SHIFT << 3) 415 #define gvt_hidden_sz(gvt) (gvt_ggtt_gm_sz(gvt) - gvt_aperture_sz(gvt)) 416 417 #define gvt_aperture_gmadr_base(gvt) (0) 418 #define gvt_aperture_gmadr_end(gvt) (gvt_aperture_gmadr_base(gvt) \ 419 + gvt_aperture_sz(gvt) - 1) 420 421 #define gvt_hidden_gmadr_base(gvt) (gvt_aperture_gmadr_base(gvt) \ 422 + gvt_aperture_sz(gvt)) 423 #define gvt_hidden_gmadr_end(gvt) (gvt_hidden_gmadr_base(gvt) \ 424 + gvt_hidden_sz(gvt) - 1) 425 426 #define gvt_fence_sz(gvt) (gvt_to_ggtt(gvt)->num_fences) 427 428 /* Aperture/GM space definitions for vGPU */ 429 #define vgpu_aperture_offset(vgpu) ((vgpu)->gm.low_gm_node.start) 430 #define vgpu_hidden_offset(vgpu) ((vgpu)->gm.high_gm_node.start) 431 #define vgpu_aperture_sz(vgpu) ((vgpu)->gm.aperture_sz) 432 #define vgpu_hidden_sz(vgpu) ((vgpu)->gm.hidden_sz) 433 434 #define vgpu_aperture_pa_base(vgpu) \ 435 (gvt_aperture_pa_base(vgpu->gvt) + vgpu_aperture_offset(vgpu)) 436 437 #define vgpu_ggtt_gm_sz(vgpu) ((vgpu)->gm.aperture_sz + (vgpu)->gm.hidden_sz) 438 439 #define vgpu_aperture_pa_end(vgpu) \ 440 (vgpu_aperture_pa_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) 441 442 #define vgpu_aperture_gmadr_base(vgpu) (vgpu_aperture_offset(vgpu)) 443 #define vgpu_aperture_gmadr_end(vgpu) \ 444 (vgpu_aperture_gmadr_base(vgpu) + vgpu_aperture_sz(vgpu) - 1) 445 446 #define vgpu_hidden_gmadr_base(vgpu) (vgpu_hidden_offset(vgpu)) 447 #define vgpu_hidden_gmadr_end(vgpu) \ 448 (vgpu_hidden_gmadr_base(vgpu) + vgpu_hidden_sz(vgpu) - 1) 449 450 #define vgpu_fence_base(vgpu) (vgpu->fence.base) 451 #define vgpu_fence_sz(vgpu) (vgpu->fence.size) 452 453 /* ring context size i.e. the first 0x50 dwords*/ 454 #define RING_CTX_SIZE 320 455 456 int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu, 457 const struct intel_vgpu_config *conf); 458 void intel_vgpu_reset_resource(struct intel_vgpu *vgpu); 459 void intel_vgpu_free_resource(struct intel_vgpu *vgpu); 460 void intel_vgpu_write_fence(struct intel_vgpu *vgpu, 461 u32 fence, u64 value); 462 463 /* Macros for easily accessing vGPU virtual/shadow register. 464 Explicitly seperate use for typed MMIO reg or real offset.*/ 465 #define vgpu_vreg_t(vgpu, reg) \ 466 (*(u32 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) 467 #define vgpu_vreg(vgpu, offset) \ 468 (*(u32 *)(vgpu->mmio.vreg + (offset))) 469 #define vgpu_vreg64_t(vgpu, reg) \ 470 (*(u64 *)(vgpu->mmio.vreg + i915_mmio_reg_offset(reg))) 471 #define vgpu_vreg64(vgpu, offset) \ 472 (*(u64 *)(vgpu->mmio.vreg + (offset))) 473 474 #define for_each_active_vgpu(gvt, vgpu, id) \ 475 idr_for_each_entry((&(gvt)->vgpu_idr), (vgpu), (id)) \ 476 for_each_if(test_bit(INTEL_VGPU_STATUS_ACTIVE, vgpu->status)) 477 478 static inline void intel_vgpu_write_pci_bar(struct intel_vgpu *vgpu, 479 u32 offset, u32 val, bool low) 480 { 481 u32 *pval; 482 483 /* BAR offset should be 32 bits algiend */ 484 offset = rounddown(offset, 4); 485 pval = (u32 *)(vgpu_cfg_space(vgpu) + offset); 486 487 if (low) { 488 /* 489 * only update bit 31 - bit 4, 490 * leave the bit 3 - bit 0 unchanged. 491 */ 492 *pval = (val & GENMASK(31, 4)) | (*pval & GENMASK(3, 0)); 493 } else { 494 *pval = val; 495 } 496 } 497 498 int intel_gvt_init_vgpu_types(struct intel_gvt *gvt); 499 void intel_gvt_clean_vgpu_types(struct intel_gvt *gvt); 500 501 struct intel_vgpu *intel_gvt_create_idle_vgpu(struct intel_gvt *gvt); 502 void intel_gvt_destroy_idle_vgpu(struct intel_vgpu *vgpu); 503 int intel_gvt_create_vgpu(struct intel_vgpu *vgpu, 504 const struct intel_vgpu_config *conf); 505 void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu); 506 void intel_gvt_release_vgpu(struct intel_vgpu *vgpu); 507 void intel_gvt_reset_vgpu_locked(struct intel_vgpu *vgpu, bool dmlr, 508 intel_engine_mask_t engine_mask); 509 void intel_gvt_reset_vgpu(struct intel_vgpu *vgpu); 510 void intel_gvt_activate_vgpu(struct intel_vgpu *vgpu); 511 void intel_gvt_deactivate_vgpu(struct intel_vgpu *vgpu); 512 513 int intel_gvt_set_opregion(struct intel_vgpu *vgpu); 514 int intel_gvt_set_edid(struct intel_vgpu *vgpu, int port_num); 515 516 /* validating GM functions */ 517 #define vgpu_gmadr_is_aperture(vgpu, gmadr) \ 518 ((gmadr >= vgpu_aperture_gmadr_base(vgpu)) && \ 519 (gmadr <= vgpu_aperture_gmadr_end(vgpu))) 520 521 #define vgpu_gmadr_is_hidden(vgpu, gmadr) \ 522 ((gmadr >= vgpu_hidden_gmadr_base(vgpu)) && \ 523 (gmadr <= vgpu_hidden_gmadr_end(vgpu))) 524 525 #define vgpu_gmadr_is_valid(vgpu, gmadr) \ 526 ((vgpu_gmadr_is_aperture(vgpu, gmadr) || \ 527 (vgpu_gmadr_is_hidden(vgpu, gmadr)))) 528 529 #define gvt_gmadr_is_aperture(gvt, gmadr) \ 530 ((gmadr >= gvt_aperture_gmadr_base(gvt)) && \ 531 (gmadr <= gvt_aperture_gmadr_end(gvt))) 532 533 #define gvt_gmadr_is_hidden(gvt, gmadr) \ 534 ((gmadr >= gvt_hidden_gmadr_base(gvt)) && \ 535 (gmadr <= gvt_hidden_gmadr_end(gvt))) 536 537 #define gvt_gmadr_is_valid(gvt, gmadr) \ 538 (gvt_gmadr_is_aperture(gvt, gmadr) || \ 539 gvt_gmadr_is_hidden(gvt, gmadr)) 540 541 bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size); 542 int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr); 543 int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr); 544 int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index, 545 unsigned long *h_index); 546 int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index, 547 unsigned long *g_index); 548 549 void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu, 550 bool primary); 551 void intel_vgpu_reset_cfg_space(struct intel_vgpu *vgpu); 552 553 int intel_vgpu_emulate_cfg_read(struct intel_vgpu *vgpu, unsigned int offset, 554 void *p_data, unsigned int bytes); 555 556 int intel_vgpu_emulate_cfg_write(struct intel_vgpu *vgpu, unsigned int offset, 557 void *p_data, unsigned int bytes); 558 559 void intel_vgpu_emulate_hotplug(struct intel_vgpu *vgpu, bool connected); 560 561 static inline u64 intel_vgpu_get_bar_gpa(struct intel_vgpu *vgpu, int bar) 562 { 563 /* We are 64bit bar. */ 564 return (*(u64 *)(vgpu->cfg_space.virtual_cfg_space + bar)) & 565 PCI_BASE_ADDRESS_MEM_MASK; 566 } 567 568 void intel_vgpu_clean_opregion(struct intel_vgpu *vgpu); 569 int intel_vgpu_init_opregion(struct intel_vgpu *vgpu); 570 int intel_vgpu_opregion_base_write_handler(struct intel_vgpu *vgpu, u32 gpa); 571 572 int intel_vgpu_emulate_opregion_request(struct intel_vgpu *vgpu, u32 swsci); 573 void populate_pvinfo_page(struct intel_vgpu *vgpu); 574 575 int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload); 576 void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason); 577 void intel_vgpu_detach_regions(struct intel_vgpu *vgpu); 578 579 enum { 580 GVT_FAILSAFE_UNSUPPORTED_GUEST, 581 GVT_FAILSAFE_INSUFFICIENT_RESOURCE, 582 GVT_FAILSAFE_GUEST_ERR, 583 }; 584 585 static inline void mmio_hw_access_pre(struct intel_gt *gt) 586 { 587 intel_runtime_pm_get(gt->uncore->rpm); 588 } 589 590 static inline void mmio_hw_access_post(struct intel_gt *gt) 591 { 592 intel_runtime_pm_put_unchecked(gt->uncore->rpm); 593 } 594 595 /** 596 * intel_gvt_mmio_set_accessed - mark a MMIO has been accessed 597 * @gvt: a GVT device 598 * @offset: register offset 599 * 600 */ 601 static inline void intel_gvt_mmio_set_accessed( 602 struct intel_gvt *gvt, unsigned int offset) 603 { 604 gvt->mmio.mmio_attribute[offset >> 2] |= F_ACCESSED; 605 } 606 607 /** 608 * intel_gvt_mmio_is_cmd_accessible - if a MMIO could be accessed by command 609 * @gvt: a GVT device 610 * @offset: register offset 611 * 612 * Returns: 613 * True if an MMIO is able to be accessed by GPU commands 614 */ 615 static inline bool intel_gvt_mmio_is_cmd_accessible( 616 struct intel_gvt *gvt, unsigned int offset) 617 { 618 return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_ACCESS; 619 } 620 621 /** 622 * intel_gvt_mmio_set_cmd_accessible - 623 * mark a MMIO could be accessible by command 624 * @gvt: a GVT device 625 * @offset: register offset 626 * 627 */ 628 static inline void intel_gvt_mmio_set_cmd_accessible( 629 struct intel_gvt *gvt, unsigned int offset) 630 { 631 gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_ACCESS; 632 } 633 634 /** 635 * intel_gvt_mmio_is_unalign - mark a MMIO could be accessed unaligned 636 * @gvt: a GVT device 637 * @offset: register offset 638 * 639 */ 640 static inline bool intel_gvt_mmio_is_unalign( 641 struct intel_gvt *gvt, unsigned int offset) 642 { 643 return gvt->mmio.mmio_attribute[offset >> 2] & F_UNALIGN; 644 } 645 646 /** 647 * intel_gvt_mmio_has_mode_mask - if a MMIO has a mode mask 648 * @gvt: a GVT device 649 * @offset: register offset 650 * 651 * Returns: 652 * True if a MMIO has a mode mask in its higher 16 bits, false if it isn't. 653 * 654 */ 655 static inline bool intel_gvt_mmio_has_mode_mask( 656 struct intel_gvt *gvt, unsigned int offset) 657 { 658 return gvt->mmio.mmio_attribute[offset >> 2] & F_MODE_MASK; 659 } 660 661 /** 662 * intel_gvt_mmio_is_sr_in_ctx - 663 * check if an MMIO has F_SR_IN_CTX mask 664 * @gvt: a GVT device 665 * @offset: register offset 666 * 667 * Returns: 668 * True if an MMIO has an F_SR_IN_CTX mask, false if it isn't. 669 * 670 */ 671 static inline bool intel_gvt_mmio_is_sr_in_ctx( 672 struct intel_gvt *gvt, unsigned int offset) 673 { 674 return gvt->mmio.mmio_attribute[offset >> 2] & F_SR_IN_CTX; 675 } 676 677 /** 678 * intel_gvt_mmio_set_sr_in_ctx - 679 * mask an MMIO in GVT's mmio save-restore list and also 680 * in hardware logical context image 681 * @gvt: a GVT device 682 * @offset: register offset 683 * 684 */ 685 static inline void intel_gvt_mmio_set_sr_in_ctx( 686 struct intel_gvt *gvt, unsigned int offset) 687 { 688 gvt->mmio.mmio_attribute[offset >> 2] |= F_SR_IN_CTX; 689 } 690 691 void intel_gvt_debugfs_add_vgpu(struct intel_vgpu *vgpu); 692 /** 693 * intel_gvt_mmio_set_cmd_write_patch - 694 * mark an MMIO if its cmd write needs to be 695 * patched 696 * @gvt: a GVT device 697 * @offset: register offset 698 * 699 */ 700 static inline void intel_gvt_mmio_set_cmd_write_patch( 701 struct intel_gvt *gvt, unsigned int offset) 702 { 703 gvt->mmio.mmio_attribute[offset >> 2] |= F_CMD_WRITE_PATCH; 704 } 705 706 /** 707 * intel_gvt_mmio_is_cmd_write_patch - check if an mmio's cmd access needs to 708 * be patched 709 * @gvt: a GVT device 710 * @offset: register offset 711 * 712 * Returns: 713 * True if GPU commmand write to an MMIO should be patched 714 */ 715 static inline bool intel_gvt_mmio_is_cmd_write_patch( 716 struct intel_gvt *gvt, unsigned int offset) 717 { 718 return gvt->mmio.mmio_attribute[offset >> 2] & F_CMD_WRITE_PATCH; 719 } 720 721 /** 722 * intel_gvt_read_gpa - copy data from GPA to host data buffer 723 * @vgpu: a vGPU 724 * @gpa: guest physical address 725 * @buf: host data buffer 726 * @len: data length 727 * 728 * Returns: 729 * Zero on success, negative error code if failed. 730 */ 731 static inline int intel_gvt_read_gpa(struct intel_vgpu *vgpu, unsigned long gpa, 732 void *buf, unsigned long len) 733 { 734 if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status)) 735 return -ESRCH; 736 return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, false); 737 } 738 739 /** 740 * intel_gvt_write_gpa - copy data from host data buffer to GPA 741 * @vgpu: a vGPU 742 * @gpa: guest physical address 743 * @buf: host data buffer 744 * @len: data length 745 * 746 * Returns: 747 * Zero on success, negative error code if failed. 748 */ 749 static inline int intel_gvt_write_gpa(struct intel_vgpu *vgpu, 750 unsigned long gpa, void *buf, unsigned long len) 751 { 752 if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status)) 753 return -ESRCH; 754 return vfio_dma_rw(&vgpu->vfio_device, gpa, buf, len, true); 755 } 756 757 void intel_gvt_debugfs_remove_vgpu(struct intel_vgpu *vgpu); 758 void intel_gvt_debugfs_init(struct intel_gvt *gvt); 759 void intel_gvt_debugfs_clean(struct intel_gvt *gvt); 760 761 int intel_gvt_page_track_add(struct intel_vgpu *info, u64 gfn); 762 int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn); 763 int intel_gvt_dma_pin_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr); 764 int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn, 765 unsigned long size, dma_addr_t *dma_addr); 766 void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu, 767 dma_addr_t dma_addr); 768 769 #include "trace.h" 770 771 #endif 772