1 /* $NetBSD: kfd_priv.h,v 1.3 2021/12/18 23:44:59 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Advanced Micro Devices, Inc. 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 shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef KFD_PRIV_H_INCLUDED 26 #define KFD_PRIV_H_INCLUDED 27 28 #include <linux/hashtable.h> 29 #include <linux/mmu_notifier.h> 30 #include <linux/mutex.h> 31 #include <linux/types.h> 32 #include <linux/atomic.h> 33 #include <linux/workqueue.h> 34 #include <linux/spinlock.h> 35 #include <linux/kfd_ioctl.h> 36 #include <linux/idr.h> 37 #include <linux/kfifo.h> 38 #include <linux/seq_file.h> 39 #include <linux/kref.h> 40 #include <linux/sysfs.h> 41 #include <linux/device_cgroup.h> 42 #include <drm/drm_file.h> 43 #include <drm/drm_drv.h> 44 #include <drm/drm_device.h> 45 #include <kgd_kfd_interface.h> 46 47 #include "amd_shared.h" 48 49 #define KFD_MAX_RING_ENTRY_SIZE 8 50 51 #define KFD_SYSFS_FILE_MODE 0444 52 53 /* GPU ID hash width in bits */ 54 #define KFD_GPU_ID_HASH_WIDTH 16 55 56 /* Use upper bits of mmap offset to store KFD driver specific information. 57 * BITS[63:62] - Encode MMAP type 58 * BITS[61:46] - Encode gpu_id. To identify to which GPU the offset belongs to 59 * BITS[45:0] - MMAP offset value 60 * 61 * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these 62 * defines are w.r.t to PAGE_SIZE 63 */ 64 #define KFD_MMAP_TYPE_SHIFT 62 65 #define KFD_MMAP_TYPE_MASK (0x3ULL << KFD_MMAP_TYPE_SHIFT) 66 #define KFD_MMAP_TYPE_DOORBELL (0x3ULL << KFD_MMAP_TYPE_SHIFT) 67 #define KFD_MMAP_TYPE_EVENTS (0x2ULL << KFD_MMAP_TYPE_SHIFT) 68 #define KFD_MMAP_TYPE_RESERVED_MEM (0x1ULL << KFD_MMAP_TYPE_SHIFT) 69 #define KFD_MMAP_TYPE_MMIO (0x0ULL << KFD_MMAP_TYPE_SHIFT) 70 71 #define KFD_MMAP_GPU_ID_SHIFT 46 72 #define KFD_MMAP_GPU_ID_MASK (((1ULL << KFD_GPU_ID_HASH_WIDTH) - 1) \ 73 << KFD_MMAP_GPU_ID_SHIFT) 74 #define KFD_MMAP_GPU_ID(gpu_id) ((((uint64_t)gpu_id) << KFD_MMAP_GPU_ID_SHIFT)\ 75 & KFD_MMAP_GPU_ID_MASK) 76 #define KFD_MMAP_GET_GPU_ID(offset) ((offset & KFD_MMAP_GPU_ID_MASK) \ 77 >> KFD_MMAP_GPU_ID_SHIFT) 78 79 /* 80 * When working with cp scheduler we should assign the HIQ manually or via 81 * the amdgpu driver to a fixed hqd slot, here are the fixed HIQ hqd slot 82 * definitions for Kaveri. In Kaveri only the first ME queues participates 83 * in the cp scheduling taking that in mind we set the HIQ slot in the 84 * second ME. 85 */ 86 #define KFD_CIK_HIQ_PIPE 4 87 #define KFD_CIK_HIQ_QUEUE 0 88 89 /* Macro for allocating structures */ 90 #define kfd_alloc_struct(ptr_to_struct) \ 91 ((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL)) 92 93 #define KFD_MAX_NUM_OF_PROCESSES 512 94 #define KFD_MAX_NUM_OF_QUEUES_PER_PROCESS 1024 95 96 /* 97 * Size of the per-process TBA+TMA buffer: 2 pages 98 * 99 * The first page is the TBA used for the CWSR ISA code. The second 100 * page is used as TMA for daisy changing a user-mode trap handler. 101 */ 102 #define KFD_CWSR_TBA_TMA_SIZE (PAGE_SIZE * 2) 103 #define KFD_CWSR_TMA_OFFSET PAGE_SIZE 104 105 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE \ 106 (KFD_MAX_NUM_OF_PROCESSES * \ 107 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) 108 109 #define KFD_KERNEL_QUEUE_SIZE 2048 110 111 #define KFD_UNMAP_LATENCY_MS (4000) 112 113 /* 114 * 512 = 0x200 115 * The doorbell index distance between SDMA RLC (2*i) and (2*i+1) in the 116 * same SDMA engine on SOC15, which has 8-byte doorbells for SDMA. 117 * 512 8-byte doorbell distance (i.e. one page away) ensures that SDMA RLC 118 * (2*i+1) doorbells (in terms of the lower 12 bit address) lie exactly in 119 * the OFFSET and SIZE set in registers like BIF_SDMA0_DOORBELL_RANGE. 120 */ 121 #define KFD_QUEUE_DOORBELL_MIRROR_OFFSET 512 122 123 124 /* 125 * Kernel module parameter to specify maximum number of supported queues per 126 * device 127 */ 128 extern int max_num_of_queues_per_device; 129 130 131 /* Kernel module parameter to specify the scheduling policy */ 132 extern int sched_policy; 133 134 /* 135 * Kernel module parameter to specify the maximum process 136 * number per HW scheduler 137 */ 138 extern int hws_max_conc_proc; 139 140 extern int cwsr_enable; 141 142 /* 143 * Kernel module parameter to specify whether to send sigterm to HSA process on 144 * unhandled exception 145 */ 146 extern int send_sigterm; 147 148 /* 149 * This kernel module is used to simulate large bar machine on non-large bar 150 * enabled machines. 151 */ 152 extern int debug_largebar; 153 154 /* 155 * Ignore CRAT table during KFD initialization, can be used to work around 156 * broken CRAT tables on some AMD systems 157 */ 158 extern int ignore_crat; 159 160 /* 161 * Set sh_mem_config.retry_disable on Vega10 162 */ 163 extern int amdgpu_noretry; 164 165 /* 166 * Halt if HWS hang is detected 167 */ 168 extern int halt_if_hws_hang; 169 170 /* 171 * Whether MEC FW support GWS barriers 172 */ 173 extern bool hws_gws_support; 174 175 /* 176 * Queue preemption timeout in ms 177 */ 178 extern int queue_preemption_timeout_ms; 179 180 enum cache_policy { 181 cache_policy_coherent, 182 cache_policy_noncoherent 183 }; 184 185 #define KFD_IS_SOC15(chip) ((chip) >= CHIP_VEGA10) 186 187 struct kfd_event_interrupt_class { 188 bool (*interrupt_isr)(struct kfd_dev *dev, 189 const uint32_t *ih_ring_entry, uint32_t *patched_ihre, 190 bool *patched_flag); 191 void (*interrupt_wq)(struct kfd_dev *dev, 192 const uint32_t *ih_ring_entry); 193 }; 194 195 struct kfd_device_info { 196 enum amd_asic_type asic_family; 197 const char *asic_name; 198 const struct kfd_event_interrupt_class *event_interrupt_class; 199 unsigned int max_pasid_bits; 200 unsigned int max_no_of_hqd; 201 unsigned int doorbell_size; 202 size_t ih_ring_entry_size; 203 uint8_t num_of_watch_points; 204 uint16_t mqd_size_aligned; 205 bool supports_cwsr; 206 bool needs_iommu_device; 207 bool needs_pci_atomics; 208 unsigned int num_sdma_engines; 209 unsigned int num_xgmi_sdma_engines; 210 unsigned int num_sdma_queues_per_engine; 211 }; 212 213 struct kfd_mem_obj { 214 uint32_t range_start; 215 uint32_t range_end; 216 uint64_t gpu_addr; 217 uint32_t *cpu_ptr; 218 void *gtt_mem; 219 }; 220 221 struct kfd_vmid_info { 222 uint32_t first_vmid_kfd; 223 uint32_t last_vmid_kfd; 224 uint32_t vmid_num_kfd; 225 }; 226 227 struct kfd_dev { 228 struct kgd_dev *kgd; 229 230 const struct kfd_device_info *device_info; 231 struct pci_dev *pdev; 232 struct drm_device *ddev; 233 234 unsigned int id; /* topology stub index */ 235 236 phys_addr_t doorbell_base; /* Start of actual doorbells used by 237 * KFD. It is aligned for mapping 238 * into user mode 239 */ 240 size_t doorbell_base_dw_offset; /* Offset from the start of the PCI 241 * doorbell BAR to the first KFD 242 * doorbell in dwords. GFX reserves 243 * the segment before this offset. 244 */ 245 u32 __iomem *doorbell_kernel_ptr; /* This is a pointer for a doorbells 246 * page used by kernel queue 247 */ 248 249 struct kgd2kfd_shared_resources shared_resources; 250 struct kfd_vmid_info vm_info; 251 252 const struct kfd2kgd_calls *kfd2kgd; 253 struct mutex doorbell_mutex; 254 DECLARE_BITMAP(doorbell_available_index, 255 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS); 256 257 void *gtt_mem; 258 uint64_t gtt_start_gpu_addr; 259 void *gtt_start_cpu_ptr; 260 void *gtt_sa_bitmap; 261 struct mutex gtt_sa_lock; 262 unsigned int gtt_sa_chunk_size; 263 unsigned int gtt_sa_num_of_chunks; 264 265 /* Interrupts */ 266 struct kfifo ih_fifo; 267 struct workqueue_struct *ih_wq; 268 struct work_struct interrupt_work; 269 spinlock_t interrupt_lock; 270 271 /* QCM Device instance */ 272 struct device_queue_manager *dqm; 273 274 bool init_complete; 275 /* 276 * Interrupts of interest to KFD are copied 277 * from the HW ring into a SW ring. 278 */ 279 bool interrupts_active; 280 281 /* Debug manager */ 282 struct kfd_dbgmgr *dbgmgr; 283 284 /* Firmware versions */ 285 uint16_t mec_fw_version; 286 uint16_t sdma_fw_version; 287 288 /* Maximum process number mapped to HW scheduler */ 289 unsigned int max_proc_per_quantum; 290 291 /* CWSR */ 292 bool cwsr_enabled; 293 const void *cwsr_isa; 294 unsigned int cwsr_isa_size; 295 296 /* xGMI */ 297 uint64_t hive_id; 298 299 bool pci_atomic_requested; 300 301 /* SRAM ECC flag */ 302 atomic_t sram_ecc_flag; 303 304 /* Compute Profile ref. count */ 305 atomic_t compute_profile; 306 307 /* Global GWS resource shared b/t processes*/ 308 void *gws; 309 }; 310 311 enum kfd_mempool { 312 KFD_MEMPOOL_SYSTEM_CACHEABLE = 1, 313 KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2, 314 KFD_MEMPOOL_FRAMEBUFFER = 3, 315 }; 316 317 /* Character device interface */ 318 int kfd_chardev_init(void); 319 void kfd_chardev_exit(void); 320 struct device *kfd_chardev(void); 321 322 /** 323 * enum kfd_unmap_queues_filter 324 * 325 * @KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE: Preempts single queue. 326 * 327 * @KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES: Preempts all queues in the 328 * running queues list. 329 * 330 * @KFD_UNMAP_QUEUES_FILTER_BY_PASID: Preempts queues that belongs to 331 * specific process. 332 * 333 */ 334 enum kfd_unmap_queues_filter { 335 KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE, 336 KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 337 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 338 KFD_UNMAP_QUEUES_FILTER_BY_PASID 339 }; 340 341 /** 342 * enum kfd_queue_type 343 * 344 * @KFD_QUEUE_TYPE_COMPUTE: Regular user mode queue type. 345 * 346 * @KFD_QUEUE_TYPE_SDMA: Sdma user mode queue type. 347 * 348 * @KFD_QUEUE_TYPE_HIQ: HIQ queue type. 349 * 350 * @KFD_QUEUE_TYPE_DIQ: DIQ queue type. 351 */ 352 enum kfd_queue_type { 353 KFD_QUEUE_TYPE_COMPUTE, 354 KFD_QUEUE_TYPE_SDMA, 355 KFD_QUEUE_TYPE_HIQ, 356 KFD_QUEUE_TYPE_DIQ, 357 KFD_QUEUE_TYPE_SDMA_XGMI 358 }; 359 360 enum kfd_queue_format { 361 KFD_QUEUE_FORMAT_PM4, 362 KFD_QUEUE_FORMAT_AQL 363 }; 364 365 enum KFD_QUEUE_PRIORITY { 366 KFD_QUEUE_PRIORITY_MINIMUM = 0, 367 KFD_QUEUE_PRIORITY_MAXIMUM = 15 368 }; 369 370 /** 371 * struct queue_properties 372 * 373 * @type: The queue type. 374 * 375 * @queue_id: Queue identifier. 376 * 377 * @queue_address: Queue ring buffer address. 378 * 379 * @queue_size: Queue ring buffer size. 380 * 381 * @priority: Defines the queue priority relative to other queues in the 382 * process. 383 * This is just an indication and HW scheduling may override the priority as 384 * necessary while keeping the relative prioritization. 385 * the priority granularity is from 0 to f which f is the highest priority. 386 * currently all queues are initialized with the highest priority. 387 * 388 * @queue_percent: This field is partially implemented and currently a zero in 389 * this field defines that the queue is non active. 390 * 391 * @read_ptr: User space address which points to the number of dwords the 392 * cp read from the ring buffer. This field updates automatically by the H/W. 393 * 394 * @write_ptr: Defines the number of dwords written to the ring buffer. 395 * 396 * @doorbell_ptr: This field aim is to notify the H/W of new packet written to 397 * the queue ring buffer. This field should be similar to write_ptr and the 398 * user should update this field after he updated the write_ptr. 399 * 400 * @doorbell_off: The doorbell offset in the doorbell pci-bar. 401 * 402 * @is_interop: Defines if this is a interop queue. Interop queue means that 403 * the queue can access both graphics and compute resources. 404 * 405 * @is_evicted: Defines if the queue is evicted. Only active queues 406 * are evicted, rendering them inactive. 407 * 408 * @is_active: Defines if the queue is active or not. @is_active and 409 * @is_evicted are protected by the DQM lock. 410 * 411 * @vmid: If the scheduling mode is no cp scheduling the field defines the vmid 412 * of the queue. 413 * 414 * This structure represents the queue properties for each queue no matter if 415 * it's user mode or kernel mode queue. 416 * 417 */ 418 struct queue_properties { 419 enum kfd_queue_type type; 420 enum kfd_queue_format format; 421 unsigned int queue_id; 422 uint64_t queue_address; 423 uint64_t queue_size; 424 uint32_t priority; 425 uint32_t queue_percent; 426 uint32_t *read_ptr; 427 uint32_t *write_ptr; 428 void __iomem *doorbell_ptr; 429 uint32_t doorbell_off; 430 bool is_interop; 431 bool is_evicted; 432 bool is_active; 433 /* Not relevant for user mode queues in cp scheduling */ 434 unsigned int vmid; 435 /* Relevant only for sdma queues*/ 436 uint32_t sdma_engine_id; 437 uint32_t sdma_queue_id; 438 uint32_t sdma_vm_addr; 439 /* Relevant only for VI */ 440 uint64_t eop_ring_buffer_address; 441 uint32_t eop_ring_buffer_size; 442 uint64_t ctx_save_restore_area_address; 443 uint32_t ctx_save_restore_area_size; 444 uint32_t ctl_stack_size; 445 uint64_t tba_addr; 446 uint64_t tma_addr; 447 /* Relevant for CU */ 448 uint32_t cu_mask_count; /* Must be a multiple of 32 */ 449 uint32_t *cu_mask; 450 }; 451 452 #define QUEUE_IS_ACTIVE(q) ((q).queue_size > 0 && \ 453 (q).queue_address != 0 && \ 454 (q).queue_percent > 0 && \ 455 !(q).is_evicted) 456 457 /** 458 * struct queue 459 * 460 * @list: Queue linked list. 461 * 462 * @mqd: The queue MQD. 463 * 464 * @mqd_mem_obj: The MQD local gpu memory object. 465 * 466 * @gart_mqd_addr: The MQD gart mc address. 467 * 468 * @properties: The queue properties. 469 * 470 * @mec: Used only in no cp scheduling mode and identifies to micro engine id 471 * that the queue should be execute on. 472 * 473 * @pipe: Used only in no cp scheduling mode and identifies the queue's pipe 474 * id. 475 * 476 * @queue: Used only in no cp scheduliong mode and identifies the queue's slot. 477 * 478 * @process: The kfd process that created this queue. 479 * 480 * @device: The kfd device that created this queue. 481 * 482 * @gws: Pointing to gws kgd_mem if this is a gws control queue; NULL 483 * otherwise. 484 * 485 * This structure represents user mode compute queues. 486 * It contains all the necessary data to handle such queues. 487 * 488 */ 489 490 struct queue { 491 struct list_head list; 492 void *mqd; 493 struct kfd_mem_obj *mqd_mem_obj; 494 uint64_t gart_mqd_addr; 495 struct queue_properties properties; 496 497 uint32_t mec; 498 uint32_t pipe; 499 uint32_t queue; 500 501 unsigned int sdma_id; 502 unsigned int doorbell_id; 503 504 struct kfd_process *process; 505 struct kfd_dev *device; 506 void *gws; 507 }; 508 509 /* 510 * Please read the kfd_mqd_manager.h description. 511 */ 512 enum KFD_MQD_TYPE { 513 KFD_MQD_TYPE_HIQ = 0, /* for hiq */ 514 KFD_MQD_TYPE_CP, /* for cp queues and diq */ 515 KFD_MQD_TYPE_SDMA, /* for sdma queues */ 516 KFD_MQD_TYPE_DIQ, /* for diq */ 517 KFD_MQD_TYPE_MAX 518 }; 519 520 enum KFD_PIPE_PRIORITY { 521 KFD_PIPE_PRIORITY_CS_LOW = 0, 522 KFD_PIPE_PRIORITY_CS_MEDIUM, 523 KFD_PIPE_PRIORITY_CS_HIGH 524 }; 525 526 struct scheduling_resources { 527 unsigned int vmid_mask; 528 enum kfd_queue_type type; 529 uint64_t queue_mask; 530 uint64_t gws_mask; 531 uint32_t oac_mask; 532 uint32_t gds_heap_base; 533 uint32_t gds_heap_size; 534 }; 535 536 struct process_queue_manager { 537 /* data */ 538 struct kfd_process *process; 539 struct list_head queues; 540 unsigned long *queue_slot_bitmap; 541 }; 542 543 struct qcm_process_device { 544 /* The Device Queue Manager that owns this data */ 545 struct device_queue_manager *dqm; 546 struct process_queue_manager *pqm; 547 /* Queues list */ 548 struct list_head queues_list; 549 struct list_head priv_queue_list; 550 551 unsigned int queue_count; 552 unsigned int vmid; 553 bool is_debug; 554 unsigned int evicted; /* eviction counter, 0=active */ 555 556 /* This flag tells if we should reset all wavefronts on 557 * process termination 558 */ 559 bool reset_wavefronts; 560 561 /* 562 * All the memory management data should be here too 563 */ 564 uint64_t gds_context_area; 565 /* Contains page table flags such as AMDGPU_PTE_VALID since gfx9 */ 566 uint64_t page_table_base; 567 uint32_t sh_mem_config; 568 uint32_t sh_mem_bases; 569 uint32_t sh_mem_ape1_base; 570 uint32_t sh_mem_ape1_limit; 571 uint32_t gds_size; 572 uint32_t num_gws; 573 uint32_t num_oac; 574 uint32_t sh_hidden_private_base; 575 576 /* CWSR memory */ 577 void *cwsr_kaddr; 578 uint64_t cwsr_base; 579 uint64_t tba_addr; 580 uint64_t tma_addr; 581 582 /* IB memory */ 583 uint64_t ib_base; 584 void *ib_kaddr; 585 586 /* doorbell resources per process per device */ 587 unsigned long *doorbell_bitmap; 588 }; 589 590 /* KFD Memory Eviction */ 591 592 /* Approx. wait time before attempting to restore evicted BOs */ 593 #define PROCESS_RESTORE_TIME_MS 100 594 /* Approx. back off time if restore fails due to lack of memory */ 595 #define PROCESS_BACK_OFF_TIME_MS 100 596 /* Approx. time before evicting the process again */ 597 #define PROCESS_ACTIVE_TIME_MS 10 598 599 /* 8 byte handle containing GPU ID in the most significant 4 bytes and 600 * idr_handle in the least significant 4 bytes 601 */ 602 #define MAKE_HANDLE(gpu_id, idr_handle) \ 603 (((uint64_t)(gpu_id) << 32) + idr_handle) 604 #define GET_GPU_ID(handle) (handle >> 32) 605 #define GET_IDR_HANDLE(handle) (handle & 0xFFFFFFFF) 606 607 enum kfd_pdd_bound { 608 PDD_UNBOUND = 0, 609 PDD_BOUND, 610 PDD_BOUND_SUSPENDED, 611 }; 612 613 /* Data that is per-process-per device. */ 614 struct kfd_process_device { 615 /* 616 * List of all per-device data for a process. 617 * Starts from kfd_process.per_device_data. 618 */ 619 struct list_head per_device_list; 620 621 /* The device that owns this data. */ 622 struct kfd_dev *dev; 623 624 /* The process that owns this kfd_process_device. */ 625 struct kfd_process *process; 626 627 /* per-process-per device QCM data structure */ 628 struct qcm_process_device qpd; 629 630 /*Apertures*/ 631 uint64_t lds_base; 632 uint64_t lds_limit; 633 uint64_t gpuvm_base; 634 uint64_t gpuvm_limit; 635 uint64_t scratch_base; 636 uint64_t scratch_limit; 637 638 /* VM context for GPUVM allocations */ 639 struct file *drm_file; 640 void *vm; 641 642 /* GPUVM allocations storage */ 643 struct idr alloc_idr; 644 645 /* Flag used to tell the pdd has dequeued from the dqm. 646 * This is used to prevent dev->dqm->ops.process_termination() from 647 * being called twice when it is already called in IOMMU callback 648 * function. 649 */ 650 bool already_dequeued; 651 652 /* Is this process/pasid bound to this device? (amd_iommu_bind_pasid) */ 653 enum kfd_pdd_bound bound; 654 }; 655 656 #define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd) 657 658 /* Process data */ 659 struct kfd_process { 660 /* 661 * kfd_process are stored in an mm_struct*->kfd_process* 662 * hash table (kfd_processes in kfd_process.c) 663 */ 664 struct hlist_node kfd_processes; 665 666 /* 667 * Opaque pointer to mm_struct. We don't hold a reference to 668 * it so it should never be dereferenced from here. This is 669 * only used for looking up processes by their mm. 670 */ 671 void *mm; 672 673 struct kref ref; 674 struct work_struct release_work; 675 676 struct mutex mutex; 677 678 /* 679 * In any process, the thread that started main() is the lead 680 * thread and outlives the rest. 681 * It is here because amd_iommu_bind_pasid wants a task_struct. 682 * It can also be used for safely getting a reference to the 683 * mm_struct of the process. 684 */ 685 struct task_struct *lead_thread; 686 687 /* We want to receive a notification when the mm_struct is destroyed */ 688 struct mmu_notifier mmu_notifier; 689 690 uint16_t pasid; 691 unsigned int doorbell_index; 692 693 /* 694 * List of kfd_process_device structures, 695 * one for each device the process is using. 696 */ 697 struct list_head per_device_data; 698 699 struct process_queue_manager pqm; 700 701 /*Is the user space process 32 bit?*/ 702 bool is_32bit_user_mode; 703 704 /* Event-related data */ 705 struct mutex event_mutex; 706 /* Event ID allocator and lookup */ 707 struct idr event_idr; 708 /* Event page */ 709 struct kfd_signal_page *signal_page; 710 size_t signal_mapped_size; 711 size_t signal_event_count; 712 bool signal_event_limit_reached; 713 714 /* Information used for memory eviction */ 715 void *kgd_process_info; 716 /* Eviction fence that is attached to all the BOs of this process. The 717 * fence will be triggered during eviction and new one will be created 718 * during restore 719 */ 720 struct dma_fence *ef; 721 722 /* Work items for evicting and restoring BOs */ 723 struct delayed_work eviction_work; 724 struct delayed_work restore_work; 725 /* seqno of the last scheduled eviction */ 726 unsigned int last_eviction_seqno; 727 /* Approx. the last timestamp (in jiffies) when the process was 728 * restored after an eviction 729 */ 730 unsigned long last_restore_timestamp; 731 732 /* Kobj for our procfs */ 733 struct kobject *kobj; 734 struct attribute attr_pasid; 735 }; 736 737 #define KFD_PROCESS_TABLE_SIZE 5 /* bits: 32 entries */ 738 extern DECLARE_HASHTABLE(kfd_processes_table, KFD_PROCESS_TABLE_SIZE); 739 extern struct srcu_struct kfd_processes_srcu; 740 741 /** 742 * Ioctl function type. 743 * 744 * \param filep pointer to file structure. 745 * \param p amdkfd process pointer. 746 * \param data pointer to arg that was copied from user. 747 */ 748 typedef int amdkfd_ioctl_t(struct file *filep, struct kfd_process *p, 749 void *data); 750 751 struct amdkfd_ioctl_desc { 752 unsigned int cmd; 753 int flags; 754 amdkfd_ioctl_t *func; 755 unsigned int cmd_drv; 756 const char *name; 757 }; 758 bool kfd_dev_is_large_bar(struct kfd_dev *dev); 759 760 int kfd_process_create_wq(void); 761 void kfd_process_destroy_wq(void); 762 struct kfd_process *kfd_create_process(struct file *filep); 763 struct kfd_process *kfd_get_process(const struct task_struct *); 764 struct kfd_process *kfd_lookup_process_by_pasid(unsigned int pasid); 765 struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm); 766 void kfd_unref_process(struct kfd_process *p); 767 int kfd_process_evict_queues(struct kfd_process *p); 768 int kfd_process_restore_queues(struct kfd_process *p); 769 void kfd_suspend_all_processes(void); 770 int kfd_resume_all_processes(void); 771 772 int kfd_process_device_init_vm(struct kfd_process_device *pdd, 773 struct file *drm_file); 774 struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev, 775 struct kfd_process *p); 776 struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev, 777 struct kfd_process *p); 778 struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev, 779 struct kfd_process *p); 780 781 int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process, 782 struct vm_area_struct *vma); 783 784 /* KFD process API for creating and translating handles */ 785 int kfd_process_device_create_obj_handle(struct kfd_process_device *pdd, 786 void *mem); 787 void *kfd_process_device_translate_handle(struct kfd_process_device *p, 788 int handle); 789 void kfd_process_device_remove_obj_handle(struct kfd_process_device *pdd, 790 int handle); 791 792 /* Process device data iterator */ 793 struct kfd_process_device *kfd_get_first_process_device_data( 794 struct kfd_process *p); 795 struct kfd_process_device *kfd_get_next_process_device_data( 796 struct kfd_process *p, 797 struct kfd_process_device *pdd); 798 bool kfd_has_process_device_data(struct kfd_process *p); 799 800 /* PASIDs */ 801 int kfd_pasid_init(void); 802 void kfd_pasid_exit(void); 803 bool kfd_set_pasid_limit(unsigned int new_limit); 804 unsigned int kfd_get_pasid_limit(void); 805 unsigned int kfd_pasid_alloc(void); 806 void kfd_pasid_free(unsigned int pasid); 807 808 /* Doorbells */ 809 size_t kfd_doorbell_process_slice(struct kfd_dev *kfd); 810 int kfd_doorbell_init(struct kfd_dev *kfd); 811 void kfd_doorbell_fini(struct kfd_dev *kfd); 812 int kfd_doorbell_mmap(struct kfd_dev *dev, struct kfd_process *process, 813 struct vm_area_struct *vma); 814 void __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd, 815 unsigned int *doorbell_off); 816 void kfd_release_kernel_doorbell(struct kfd_dev *kfd, u32 __iomem *db_addr); 817 u32 read_kernel_doorbell(u32 __iomem *db); 818 void write_kernel_doorbell(void __iomem *db, u32 value); 819 void write_kernel_doorbell64(void __iomem *db, u64 value); 820 unsigned int kfd_get_doorbell_dw_offset_in_bar(struct kfd_dev *kfd, 821 struct kfd_process *process, 822 unsigned int doorbell_id); 823 phys_addr_t kfd_get_process_doorbells(struct kfd_dev *dev, 824 struct kfd_process *process); 825 int kfd_alloc_process_doorbells(struct kfd_process *process); 826 void kfd_free_process_doorbells(struct kfd_process *process); 827 828 /* GTT Sub-Allocator */ 829 830 int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size, 831 struct kfd_mem_obj **mem_obj); 832 833 int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj); 834 835 extern struct device *kfd_device; 836 837 /* KFD's procfs */ 838 void kfd_procfs_init(void); 839 void kfd_procfs_shutdown(void); 840 841 /* Topology */ 842 int kfd_topology_init(void); 843 void kfd_topology_shutdown(void); 844 int kfd_topology_add_device(struct kfd_dev *gpu); 845 int kfd_topology_remove_device(struct kfd_dev *gpu); 846 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 847 uint32_t proximity_domain); 848 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id); 849 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id); 850 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev); 851 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd); 852 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev); 853 int kfd_numa_node_to_apic_id(int numa_node_id); 854 855 /* Interrupts */ 856 int kfd_interrupt_init(struct kfd_dev *dev); 857 void kfd_interrupt_exit(struct kfd_dev *dev); 858 bool enqueue_ih_ring_entry(struct kfd_dev *kfd, const void *ih_ring_entry); 859 bool interrupt_is_wanted(struct kfd_dev *dev, 860 const uint32_t *ih_ring_entry, 861 uint32_t *patched_ihre, bool *flag); 862 863 /* amdkfd Apertures */ 864 int kfd_init_apertures(struct kfd_process *process); 865 866 /* Queue Context Management */ 867 int init_queue(struct queue **q, const struct queue_properties *properties); 868 void uninit_queue(struct queue *q); 869 void print_queue_properties(struct queue_properties *q); 870 void print_queue(struct queue *q); 871 872 struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type, 873 struct kfd_dev *dev); 874 struct mqd_manager *mqd_manager_init_cik_hawaii(enum KFD_MQD_TYPE type, 875 struct kfd_dev *dev); 876 struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type, 877 struct kfd_dev *dev); 878 struct mqd_manager *mqd_manager_init_vi_tonga(enum KFD_MQD_TYPE type, 879 struct kfd_dev *dev); 880 struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type, 881 struct kfd_dev *dev); 882 struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type, 883 struct kfd_dev *dev); 884 struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev); 885 void device_queue_manager_uninit(struct device_queue_manager *dqm); 886 struct kernel_queue *kernel_queue_init(struct kfd_dev *dev, 887 enum kfd_queue_type type); 888 void kernel_queue_uninit(struct kernel_queue *kq, bool hanging); 889 int kfd_process_vm_fault(struct device_queue_manager *dqm, unsigned int pasid); 890 891 /* Process Queue Manager */ 892 struct process_queue_node { 893 struct queue *q; 894 struct kernel_queue *kq; 895 struct list_head process_queue_list; 896 }; 897 898 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd); 899 void kfd_process_dequeue_from_all_devices(struct kfd_process *p); 900 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p); 901 void pqm_uninit(struct process_queue_manager *pqm); 902 int pqm_create_queue(struct process_queue_manager *pqm, 903 struct kfd_dev *dev, 904 struct file *f, 905 struct queue_properties *properties, 906 unsigned int *qid, 907 uint32_t *p_doorbell_offset_in_process); 908 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid); 909 int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid, 910 struct queue_properties *p); 911 int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid, 912 struct queue_properties *p); 913 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid, 914 void *gws); 915 struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm, 916 unsigned int qid); 917 int pqm_get_wave_state(struct process_queue_manager *pqm, 918 unsigned int qid, 919 void __user *ctl_stack, 920 u32 *ctl_stack_used_size, 921 u32 *save_area_used_size); 922 923 int amdkfd_fence_wait_timeout(unsigned int *fence_addr, 924 unsigned int fence_value, 925 unsigned int timeout_ms); 926 927 /* Packet Manager */ 928 929 #define KFD_FENCE_COMPLETED (100) 930 #define KFD_FENCE_INIT (10) 931 932 struct packet_manager { 933 struct device_queue_manager *dqm; 934 struct kernel_queue *priv_queue; 935 struct mutex lock; 936 bool allocated; 937 struct kfd_mem_obj *ib_buffer_obj; 938 unsigned int ib_size_bytes; 939 bool is_over_subscription; 940 941 const struct packet_manager_funcs *pmf; 942 }; 943 944 struct packet_manager_funcs { 945 /* Support ASIC-specific packet formats for PM4 packets */ 946 int (*map_process)(struct packet_manager *pm, uint32_t *buffer, 947 struct qcm_process_device *qpd); 948 int (*runlist)(struct packet_manager *pm, uint32_t *buffer, 949 uint64_t ib, size_t ib_size_in_dwords, bool chain); 950 int (*set_resources)(struct packet_manager *pm, uint32_t *buffer, 951 struct scheduling_resources *res); 952 int (*map_queues)(struct packet_manager *pm, uint32_t *buffer, 953 struct queue *q, bool is_static); 954 int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer, 955 enum kfd_queue_type type, 956 enum kfd_unmap_queues_filter mode, 957 uint32_t filter_param, bool reset, 958 unsigned int sdma_engine); 959 int (*query_status)(struct packet_manager *pm, uint32_t *buffer, 960 uint64_t fence_address, uint32_t fence_value); 961 int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer); 962 963 /* Packet sizes */ 964 int map_process_size; 965 int runlist_size; 966 int set_resources_size; 967 int map_queues_size; 968 int unmap_queues_size; 969 int query_status_size; 970 int release_mem_size; 971 }; 972 973 extern const struct packet_manager_funcs kfd_vi_pm_funcs; 974 extern const struct packet_manager_funcs kfd_v9_pm_funcs; 975 976 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm); 977 void pm_uninit(struct packet_manager *pm, bool hanging); 978 int pm_send_set_resources(struct packet_manager *pm, 979 struct scheduling_resources *res); 980 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues); 981 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address, 982 uint32_t fence_value); 983 984 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type, 985 enum kfd_unmap_queues_filter mode, 986 uint32_t filter_param, bool reset, 987 unsigned int sdma_engine); 988 989 void pm_release_ib(struct packet_manager *pm); 990 991 /* Following PM funcs can be shared among VI and AI */ 992 unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size); 993 994 uint64_t kfd_get_number_elems(struct kfd_dev *kfd); 995 996 /* Events */ 997 extern const struct kfd_event_interrupt_class event_interrupt_class_cik; 998 extern const struct kfd_event_interrupt_class event_interrupt_class_v9; 999 1000 extern const struct kfd_device_global_init_class device_global_init_class_cik; 1001 1002 void kfd_event_init_process(struct kfd_process *p); 1003 void kfd_event_free_process(struct kfd_process *p); 1004 int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma); 1005 int kfd_wait_on_events(struct kfd_process *p, 1006 uint32_t num_events, void __user *data, 1007 bool all, uint32_t user_timeout_ms, 1008 uint32_t *wait_result); 1009 void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id, 1010 uint32_t valid_id_bits); 1011 void kfd_signal_iommu_event(struct kfd_dev *dev, 1012 unsigned int pasid, unsigned long address, 1013 bool is_write_requested, bool is_execute_requested); 1014 void kfd_signal_hw_exception_event(unsigned int pasid); 1015 int kfd_set_event(struct kfd_process *p, uint32_t event_id); 1016 int kfd_reset_event(struct kfd_process *p, uint32_t event_id); 1017 int kfd_event_page_set(struct kfd_process *p, void *kernel_address, 1018 uint64_t size); 1019 int kfd_event_create(struct file *devkfd, struct kfd_process *p, 1020 uint32_t event_type, bool auto_reset, uint32_t node_id, 1021 uint32_t *event_id, uint32_t *event_trigger_data, 1022 uint64_t *event_page_offset, uint32_t *event_slot_index); 1023 int kfd_event_destroy(struct kfd_process *p, uint32_t event_id); 1024 1025 void kfd_signal_vm_fault_event(struct kfd_dev *dev, unsigned int pasid, 1026 struct kfd_vm_fault_info *info); 1027 1028 void kfd_signal_reset_event(struct kfd_dev *dev); 1029 1030 void kfd_flush_tlb(struct kfd_process_device *pdd); 1031 1032 int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p); 1033 1034 bool kfd_is_locked(void); 1035 1036 /* Compute profile */ 1037 void kfd_inc_compute_active(struct kfd_dev *dev); 1038 void kfd_dec_compute_active(struct kfd_dev *dev); 1039 1040 /* Cgroup Support */ 1041 /* Check with device cgroup if @kfd device is accessible */ 1042 static inline int kfd_devcgroup_check_permission(struct kfd_dev *kfd) 1043 { 1044 #if defined(CONFIG_CGROUP_DEVICE) 1045 struct drm_device *ddev = kfd->ddev; 1046 1047 return devcgroup_check_permission(DEVCG_DEV_CHAR, ddev->driver->major, 1048 ddev->render->index, 1049 DEVCG_ACC_WRITE | DEVCG_ACC_READ); 1050 #else 1051 return 0; 1052 #endif 1053 } 1054 1055 /* Debugfs */ 1056 #if defined(CONFIG_DEBUG_FS) 1057 1058 void kfd_debugfs_init(void); 1059 void kfd_debugfs_fini(void); 1060 int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data); 1061 int pqm_debugfs_mqds(struct seq_file *m, void *data); 1062 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data); 1063 int dqm_debugfs_hqds(struct seq_file *m, void *data); 1064 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data); 1065 int pm_debugfs_runlist(struct seq_file *m, void *data); 1066 1067 int kfd_debugfs_hang_hws(struct kfd_dev *dev); 1068 int pm_debugfs_hang_hws(struct packet_manager *pm); 1069 int dqm_debugfs_execute_queues(struct device_queue_manager *dqm); 1070 1071 #else 1072 1073 static inline void kfd_debugfs_init(void) {} 1074 static inline void kfd_debugfs_fini(void) {} 1075 1076 #endif 1077 1078 #endif 1079