1 /* 2 * Copyright 2014 Advanced Micro Devices, Inc. 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 shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23 #ifndef KFD_PRIV_H_INCLUDED 24 #define KFD_PRIV_H_INCLUDED 25 26 #include <linux/hashtable.h> 27 #include <linux/mmu_notifier.h> 28 #include <linux/mutex.h> 29 #include <linux/types.h> 30 #include <linux/atomic.h> 31 #include <linux/workqueue.h> 32 #include <linux/spinlock.h> 33 #include <linux/kfd_ioctl.h> 34 #include <linux/idr.h> 35 #include <linux/kfifo.h> 36 #include <linux/seq_file.h> 37 #include <linux/kref.h> 38 #include <kgd_kfd_interface.h> 39 40 #include "amd_shared.h" 41 42 #define KFD_MAX_RING_ENTRY_SIZE 8 43 44 #define KFD_SYSFS_FILE_MODE 0444 45 46 /* GPU ID hash width in bits */ 47 #define KFD_GPU_ID_HASH_WIDTH 16 48 49 /* Use upper bits of mmap offset to store KFD driver specific information. 50 * BITS[63:62] - Encode MMAP type 51 * BITS[61:46] - Encode gpu_id. To identify to which GPU the offset belongs to 52 * BITS[45:0] - MMAP offset value 53 * 54 * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these 55 * defines are w.r.t to PAGE_SIZE 56 */ 57 #define KFD_MMAP_TYPE_SHIFT (62 - PAGE_SHIFT) 58 #define KFD_MMAP_TYPE_MASK (0x3ULL << KFD_MMAP_TYPE_SHIFT) 59 #define KFD_MMAP_TYPE_DOORBELL (0x3ULL << KFD_MMAP_TYPE_SHIFT) 60 #define KFD_MMAP_TYPE_EVENTS (0x2ULL << KFD_MMAP_TYPE_SHIFT) 61 #define KFD_MMAP_TYPE_RESERVED_MEM (0x1ULL << KFD_MMAP_TYPE_SHIFT) 62 63 #define KFD_MMAP_GPU_ID_SHIFT (46 - PAGE_SHIFT) 64 #define KFD_MMAP_GPU_ID_MASK (((1ULL << KFD_GPU_ID_HASH_WIDTH) - 1) \ 65 << KFD_MMAP_GPU_ID_SHIFT) 66 #define KFD_MMAP_GPU_ID(gpu_id) ((((uint64_t)gpu_id) << KFD_MMAP_GPU_ID_SHIFT)\ 67 & KFD_MMAP_GPU_ID_MASK) 68 #define KFD_MMAP_GPU_ID_GET(offset) ((offset & KFD_MMAP_GPU_ID_MASK) \ 69 >> KFD_MMAP_GPU_ID_SHIFT) 70 71 #define KFD_MMAP_OFFSET_VALUE_MASK (0x3FFFFFFFFFFFULL >> PAGE_SHIFT) 72 #define KFD_MMAP_OFFSET_VALUE_GET(offset) (offset & KFD_MMAP_OFFSET_VALUE_MASK) 73 74 /* 75 * When working with cp scheduler we should assign the HIQ manually or via 76 * the amdgpu driver to a fixed hqd slot, here are the fixed HIQ hqd slot 77 * definitions for Kaveri. In Kaveri only the first ME queues participates 78 * in the cp scheduling taking that in mind we set the HIQ slot in the 79 * second ME. 80 */ 81 #define KFD_CIK_HIQ_PIPE 4 82 #define KFD_CIK_HIQ_QUEUE 0 83 84 /* Macro for allocating structures */ 85 #define kfd_alloc_struct(ptr_to_struct) \ 86 ((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL)) 87 88 #define KFD_MAX_NUM_OF_PROCESSES 512 89 #define KFD_MAX_NUM_OF_QUEUES_PER_PROCESS 1024 90 91 /* 92 * Size of the per-process TBA+TMA buffer: 2 pages 93 * 94 * The first page is the TBA used for the CWSR ISA code. The second 95 * page is used as TMA for daisy changing a user-mode trap handler. 96 */ 97 #define KFD_CWSR_TBA_TMA_SIZE (PAGE_SIZE * 2) 98 #define KFD_CWSR_TMA_OFFSET PAGE_SIZE 99 100 /* 101 * Kernel module parameter to specify maximum number of supported queues per 102 * device 103 */ 104 extern int max_num_of_queues_per_device; 105 106 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE \ 107 (KFD_MAX_NUM_OF_PROCESSES * \ 108 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) 109 110 #define KFD_KERNEL_QUEUE_SIZE 2048 111 112 /* Kernel module parameter to specify the scheduling policy */ 113 extern int sched_policy; 114 115 /* 116 * Kernel module parameter to specify the maximum process 117 * number per HW scheduler 118 */ 119 extern int hws_max_conc_proc; 120 121 extern int cwsr_enable; 122 123 /* 124 * Kernel module parameter to specify whether to send sigterm to HSA process on 125 * unhandled exception 126 */ 127 extern int send_sigterm; 128 129 /* 130 * This kernel module is used to simulate large bar machine on non-large bar 131 * enabled machines. 132 */ 133 extern int debug_largebar; 134 135 /* 136 * Ignore CRAT table during KFD initialization, can be used to work around 137 * broken CRAT tables on some AMD systems 138 */ 139 extern int ignore_crat; 140 141 /* 142 * Set sh_mem_config.retry_disable on Vega10 143 */ 144 extern int noretry; 145 146 /* 147 * Halt if HWS hang is detected 148 */ 149 extern int halt_if_hws_hang; 150 151 enum cache_policy { 152 cache_policy_coherent, 153 cache_policy_noncoherent 154 }; 155 156 #define KFD_IS_SOC15(chip) ((chip) >= CHIP_VEGA10) 157 158 struct kfd_event_interrupt_class { 159 bool (*interrupt_isr)(struct kfd_dev *dev, 160 const uint32_t *ih_ring_entry, uint32_t *patched_ihre, 161 bool *patched_flag); 162 void (*interrupt_wq)(struct kfd_dev *dev, 163 const uint32_t *ih_ring_entry); 164 }; 165 166 struct kfd_device_info { 167 enum amd_asic_type asic_family; 168 const struct kfd_event_interrupt_class *event_interrupt_class; 169 unsigned int max_pasid_bits; 170 unsigned int max_no_of_hqd; 171 unsigned int doorbell_size; 172 size_t ih_ring_entry_size; 173 uint8_t num_of_watch_points; 174 uint16_t mqd_size_aligned; 175 bool supports_cwsr; 176 bool needs_iommu_device; 177 bool needs_pci_atomics; 178 unsigned int num_sdma_engines; 179 unsigned int num_sdma_queues_per_engine; 180 }; 181 182 struct kfd_mem_obj { 183 uint32_t range_start; 184 uint32_t range_end; 185 uint64_t gpu_addr; 186 uint32_t *cpu_ptr; 187 void *gtt_mem; 188 }; 189 190 struct kfd_vmid_info { 191 uint32_t first_vmid_kfd; 192 uint32_t last_vmid_kfd; 193 uint32_t vmid_num_kfd; 194 }; 195 196 struct kfd_dev { 197 struct kgd_dev *kgd; 198 199 const struct kfd_device_info *device_info; 200 struct pci_dev *pdev; 201 202 unsigned int id; /* topology stub index */ 203 204 phys_addr_t doorbell_base; /* Start of actual doorbells used by 205 * KFD. It is aligned for mapping 206 * into user mode 207 */ 208 size_t doorbell_id_offset; /* Doorbell offset (from KFD doorbell 209 * to HW doorbell, GFX reserved some 210 * at the start) 211 */ 212 u32 __iomem *doorbell_kernel_ptr; /* This is a pointer for a doorbells 213 * page used by kernel queue 214 */ 215 216 struct kgd2kfd_shared_resources shared_resources; 217 struct kfd_vmid_info vm_info; 218 219 const struct kfd2kgd_calls *kfd2kgd; 220 struct mutex doorbell_mutex; 221 DECLARE_BITMAP(doorbell_available_index, 222 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS); 223 224 void *gtt_mem; 225 uint64_t gtt_start_gpu_addr; 226 void *gtt_start_cpu_ptr; 227 void *gtt_sa_bitmap; 228 struct mutex gtt_sa_lock; 229 unsigned int gtt_sa_chunk_size; 230 unsigned int gtt_sa_num_of_chunks; 231 232 /* Interrupts */ 233 struct kfifo ih_fifo; 234 struct workqueue_struct *ih_wq; 235 struct work_struct interrupt_work; 236 spinlock_t interrupt_lock; 237 238 /* QCM Device instance */ 239 struct device_queue_manager *dqm; 240 241 bool init_complete; 242 /* 243 * Interrupts of interest to KFD are copied 244 * from the HW ring into a SW ring. 245 */ 246 bool interrupts_active; 247 248 /* Debug manager */ 249 struct kfd_dbgmgr *dbgmgr; 250 251 /* Firmware versions */ 252 uint16_t mec_fw_version; 253 uint16_t sdma_fw_version; 254 255 /* Maximum process number mapped to HW scheduler */ 256 unsigned int max_proc_per_quantum; 257 258 /* CWSR */ 259 bool cwsr_enabled; 260 const void *cwsr_isa; 261 unsigned int cwsr_isa_size; 262 263 /* xGMI */ 264 uint64_t hive_id; 265 266 bool pci_atomic_requested; 267 }; 268 269 /* KGD2KFD callbacks */ 270 void kgd2kfd_exit(void); 271 struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, 272 struct pci_dev *pdev, const struct kfd2kgd_calls *f2g); 273 bool kgd2kfd_device_init(struct kfd_dev *kfd, 274 const struct kgd2kfd_shared_resources *gpu_resources); 275 void kgd2kfd_device_exit(struct kfd_dev *kfd); 276 277 enum kfd_mempool { 278 KFD_MEMPOOL_SYSTEM_CACHEABLE = 1, 279 KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2, 280 KFD_MEMPOOL_FRAMEBUFFER = 3, 281 }; 282 283 /* Character device interface */ 284 int kfd_chardev_init(void); 285 void kfd_chardev_exit(void); 286 struct device *kfd_chardev(void); 287 288 /** 289 * enum kfd_unmap_queues_filter 290 * 291 * @KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE: Preempts single queue. 292 * 293 * @KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES: Preempts all queues in the 294 * running queues list. 295 * 296 * @KFD_UNMAP_QUEUES_FILTER_BY_PASID: Preempts queues that belongs to 297 * specific process. 298 * 299 */ 300 enum kfd_unmap_queues_filter { 301 KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE, 302 KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES, 303 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES, 304 KFD_UNMAP_QUEUES_FILTER_BY_PASID 305 }; 306 307 /** 308 * enum kfd_queue_type 309 * 310 * @KFD_QUEUE_TYPE_COMPUTE: Regular user mode queue type. 311 * 312 * @KFD_QUEUE_TYPE_SDMA: Sdma user mode queue type. 313 * 314 * @KFD_QUEUE_TYPE_HIQ: HIQ queue type. 315 * 316 * @KFD_QUEUE_TYPE_DIQ: DIQ queue type. 317 */ 318 enum kfd_queue_type { 319 KFD_QUEUE_TYPE_COMPUTE, 320 KFD_QUEUE_TYPE_SDMA, 321 KFD_QUEUE_TYPE_HIQ, 322 KFD_QUEUE_TYPE_DIQ 323 }; 324 325 enum kfd_queue_format { 326 KFD_QUEUE_FORMAT_PM4, 327 KFD_QUEUE_FORMAT_AQL 328 }; 329 330 /** 331 * struct queue_properties 332 * 333 * @type: The queue type. 334 * 335 * @queue_id: Queue identifier. 336 * 337 * @queue_address: Queue ring buffer address. 338 * 339 * @queue_size: Queue ring buffer size. 340 * 341 * @priority: Defines the queue priority relative to other queues in the 342 * process. 343 * This is just an indication and HW scheduling may override the priority as 344 * necessary while keeping the relative prioritization. 345 * the priority granularity is from 0 to f which f is the highest priority. 346 * currently all queues are initialized with the highest priority. 347 * 348 * @queue_percent: This field is partially implemented and currently a zero in 349 * this field defines that the queue is non active. 350 * 351 * @read_ptr: User space address which points to the number of dwords the 352 * cp read from the ring buffer. This field updates automatically by the H/W. 353 * 354 * @write_ptr: Defines the number of dwords written to the ring buffer. 355 * 356 * @doorbell_ptr: This field aim is to notify the H/W of new packet written to 357 * the queue ring buffer. This field should be similar to write_ptr and the 358 * user should update this field after he updated the write_ptr. 359 * 360 * @doorbell_off: The doorbell offset in the doorbell pci-bar. 361 * 362 * @is_interop: Defines if this is a interop queue. Interop queue means that 363 * the queue can access both graphics and compute resources. 364 * 365 * @is_evicted: Defines if the queue is evicted. Only active queues 366 * are evicted, rendering them inactive. 367 * 368 * @is_active: Defines if the queue is active or not. @is_active and 369 * @is_evicted are protected by the DQM lock. 370 * 371 * @vmid: If the scheduling mode is no cp scheduling the field defines the vmid 372 * of the queue. 373 * 374 * This structure represents the queue properties for each queue no matter if 375 * it's user mode or kernel mode queue. 376 * 377 */ 378 struct queue_properties { 379 enum kfd_queue_type type; 380 enum kfd_queue_format format; 381 unsigned int queue_id; 382 uint64_t queue_address; 383 uint64_t queue_size; 384 uint32_t priority; 385 uint32_t queue_percent; 386 uint32_t *read_ptr; 387 uint32_t *write_ptr; 388 void __iomem *doorbell_ptr; 389 uint32_t doorbell_off; 390 bool is_interop; 391 bool is_evicted; 392 bool is_active; 393 /* Not relevant for user mode queues in cp scheduling */ 394 unsigned int vmid; 395 /* Relevant only for sdma queues*/ 396 uint32_t sdma_engine_id; 397 uint32_t sdma_queue_id; 398 uint32_t sdma_vm_addr; 399 /* Relevant only for VI */ 400 uint64_t eop_ring_buffer_address; 401 uint32_t eop_ring_buffer_size; 402 uint64_t ctx_save_restore_area_address; 403 uint32_t ctx_save_restore_area_size; 404 uint32_t ctl_stack_size; 405 uint64_t tba_addr; 406 uint64_t tma_addr; 407 /* Relevant for CU */ 408 uint32_t cu_mask_count; /* Must be a multiple of 32 */ 409 uint32_t *cu_mask; 410 }; 411 412 /** 413 * struct queue 414 * 415 * @list: Queue linked list. 416 * 417 * @mqd: The queue MQD. 418 * 419 * @mqd_mem_obj: The MQD local gpu memory object. 420 * 421 * @gart_mqd_addr: The MQD gart mc address. 422 * 423 * @properties: The queue properties. 424 * 425 * @mec: Used only in no cp scheduling mode and identifies to micro engine id 426 * that the queue should be execute on. 427 * 428 * @pipe: Used only in no cp scheduling mode and identifies the queue's pipe 429 * id. 430 * 431 * @queue: Used only in no cp scheduliong mode and identifies the queue's slot. 432 * 433 * @process: The kfd process that created this queue. 434 * 435 * @device: The kfd device that created this queue. 436 * 437 * This structure represents user mode compute queues. 438 * It contains all the necessary data to handle such queues. 439 * 440 */ 441 442 struct queue { 443 struct list_head list; 444 void *mqd; 445 struct kfd_mem_obj *mqd_mem_obj; 446 uint64_t gart_mqd_addr; 447 struct queue_properties properties; 448 449 uint32_t mec; 450 uint32_t pipe; 451 uint32_t queue; 452 453 unsigned int sdma_id; 454 unsigned int doorbell_id; 455 456 struct kfd_process *process; 457 struct kfd_dev *device; 458 }; 459 460 /* 461 * Please read the kfd_mqd_manager.h description. 462 */ 463 enum KFD_MQD_TYPE { 464 KFD_MQD_TYPE_COMPUTE = 0, /* for no cp scheduling */ 465 KFD_MQD_TYPE_HIQ, /* for hiq */ 466 KFD_MQD_TYPE_CP, /* for cp queues and diq */ 467 KFD_MQD_TYPE_SDMA, /* for sdma queues */ 468 KFD_MQD_TYPE_MAX 469 }; 470 471 struct scheduling_resources { 472 unsigned int vmid_mask; 473 enum kfd_queue_type type; 474 uint64_t queue_mask; 475 uint64_t gws_mask; 476 uint32_t oac_mask; 477 uint32_t gds_heap_base; 478 uint32_t gds_heap_size; 479 }; 480 481 struct process_queue_manager { 482 /* data */ 483 struct kfd_process *process; 484 struct list_head queues; 485 unsigned long *queue_slot_bitmap; 486 }; 487 488 struct qcm_process_device { 489 /* The Device Queue Manager that owns this data */ 490 struct device_queue_manager *dqm; 491 struct process_queue_manager *pqm; 492 /* Queues list */ 493 struct list_head queues_list; 494 struct list_head priv_queue_list; 495 496 unsigned int queue_count; 497 unsigned int vmid; 498 bool is_debug; 499 unsigned int evicted; /* eviction counter, 0=active */ 500 501 /* This flag tells if we should reset all wavefronts on 502 * process termination 503 */ 504 bool reset_wavefronts; 505 506 /* 507 * All the memory management data should be here too 508 */ 509 uint64_t gds_context_area; 510 /* Contains page table flags such as AMDGPU_PTE_VALID since gfx9 */ 511 uint64_t page_table_base; 512 uint32_t sh_mem_config; 513 uint32_t sh_mem_bases; 514 uint32_t sh_mem_ape1_base; 515 uint32_t sh_mem_ape1_limit; 516 uint32_t gds_size; 517 uint32_t num_gws; 518 uint32_t num_oac; 519 uint32_t sh_hidden_private_base; 520 521 /* CWSR memory */ 522 void *cwsr_kaddr; 523 uint64_t cwsr_base; 524 uint64_t tba_addr; 525 uint64_t tma_addr; 526 527 /* IB memory */ 528 uint64_t ib_base; 529 void *ib_kaddr; 530 531 /* doorbell resources per process per device */ 532 unsigned long *doorbell_bitmap; 533 }; 534 535 /* KFD Memory Eviction */ 536 537 /* Approx. wait time before attempting to restore evicted BOs */ 538 #define PROCESS_RESTORE_TIME_MS 100 539 /* Approx. back off time if restore fails due to lack of memory */ 540 #define PROCESS_BACK_OFF_TIME_MS 100 541 /* Approx. time before evicting the process again */ 542 #define PROCESS_ACTIVE_TIME_MS 10 543 544 int kgd2kfd_quiesce_mm(struct mm_struct *mm); 545 int kgd2kfd_resume_mm(struct mm_struct *mm); 546 int kgd2kfd_schedule_evict_and_restore_process(struct mm_struct *mm, 547 struct dma_fence *fence); 548 549 /* 8 byte handle containing GPU ID in the most significant 4 bytes and 550 * idr_handle in the least significant 4 bytes 551 */ 552 #define MAKE_HANDLE(gpu_id, idr_handle) \ 553 (((uint64_t)(gpu_id) << 32) + idr_handle) 554 #define GET_GPU_ID(handle) (handle >> 32) 555 #define GET_IDR_HANDLE(handle) (handle & 0xFFFFFFFF) 556 557 enum kfd_pdd_bound { 558 PDD_UNBOUND = 0, 559 PDD_BOUND, 560 PDD_BOUND_SUSPENDED, 561 }; 562 563 /* Data that is per-process-per device. */ 564 struct kfd_process_device { 565 /* 566 * List of all per-device data for a process. 567 * Starts from kfd_process.per_device_data. 568 */ 569 struct list_head per_device_list; 570 571 /* The device that owns this data. */ 572 struct kfd_dev *dev; 573 574 /* The process that owns this kfd_process_device. */ 575 struct kfd_process *process; 576 577 /* per-process-per device QCM data structure */ 578 struct qcm_process_device qpd; 579 580 /*Apertures*/ 581 uint64_t lds_base; 582 uint64_t lds_limit; 583 uint64_t gpuvm_base; 584 uint64_t gpuvm_limit; 585 uint64_t scratch_base; 586 uint64_t scratch_limit; 587 588 /* VM context for GPUVM allocations */ 589 struct file *drm_file; 590 void *vm; 591 592 /* GPUVM allocations storage */ 593 struct idr alloc_idr; 594 595 /* Flag used to tell the pdd has dequeued from the dqm. 596 * This is used to prevent dev->dqm->ops.process_termination() from 597 * being called twice when it is already called in IOMMU callback 598 * function. 599 */ 600 bool already_dequeued; 601 602 /* Is this process/pasid bound to this device? (amd_iommu_bind_pasid) */ 603 enum kfd_pdd_bound bound; 604 }; 605 606 #define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd) 607 608 /* Process data */ 609 struct kfd_process { 610 /* 611 * kfd_process are stored in an mm_struct*->kfd_process* 612 * hash table (kfd_processes in kfd_process.c) 613 */ 614 struct hlist_node kfd_processes; 615 616 /* 617 * Opaque pointer to mm_struct. We don't hold a reference to 618 * it so it should never be dereferenced from here. This is 619 * only used for looking up processes by their mm. 620 */ 621 void *mm; 622 623 struct kref ref; 624 struct work_struct release_work; 625 626 struct mutex mutex; 627 628 /* 629 * In any process, the thread that started main() is the lead 630 * thread and outlives the rest. 631 * It is here because amd_iommu_bind_pasid wants a task_struct. 632 * It can also be used for safely getting a reference to the 633 * mm_struct of the process. 634 */ 635 struct task_struct *lead_thread; 636 637 /* We want to receive a notification when the mm_struct is destroyed */ 638 struct mmu_notifier mmu_notifier; 639 640 /* Use for delayed freeing of kfd_process structure */ 641 struct rcu_head rcu; 642 643 unsigned int pasid; 644 unsigned int doorbell_index; 645 646 /* 647 * List of kfd_process_device structures, 648 * one for each device the process is using. 649 */ 650 struct list_head per_device_data; 651 652 struct process_queue_manager pqm; 653 654 /*Is the user space process 32 bit?*/ 655 bool is_32bit_user_mode; 656 657 /* Event-related data */ 658 struct mutex event_mutex; 659 /* Event ID allocator and lookup */ 660 struct idr event_idr; 661 /* Event page */ 662 struct kfd_signal_page *signal_page; 663 size_t signal_mapped_size; 664 size_t signal_event_count; 665 bool signal_event_limit_reached; 666 667 /* Information used for memory eviction */ 668 void *kgd_process_info; 669 /* Eviction fence that is attached to all the BOs of this process. The 670 * fence will be triggered during eviction and new one will be created 671 * during restore 672 */ 673 struct dma_fence *ef; 674 675 /* Work items for evicting and restoring BOs */ 676 struct delayed_work eviction_work; 677 struct delayed_work restore_work; 678 /* seqno of the last scheduled eviction */ 679 unsigned int last_eviction_seqno; 680 /* Approx. the last timestamp (in jiffies) when the process was 681 * restored after an eviction 682 */ 683 unsigned long last_restore_timestamp; 684 }; 685 686 #define KFD_PROCESS_TABLE_SIZE 5 /* bits: 32 entries */ 687 extern DECLARE_HASHTABLE(kfd_processes_table, KFD_PROCESS_TABLE_SIZE); 688 extern struct srcu_struct kfd_processes_srcu; 689 690 /** 691 * Ioctl function type. 692 * 693 * \param filep pointer to file structure. 694 * \param p amdkfd process pointer. 695 * \param data pointer to arg that was copied from user. 696 */ 697 typedef int amdkfd_ioctl_t(struct file *filep, struct kfd_process *p, 698 void *data); 699 700 struct amdkfd_ioctl_desc { 701 unsigned int cmd; 702 int flags; 703 amdkfd_ioctl_t *func; 704 unsigned int cmd_drv; 705 const char *name; 706 }; 707 bool kfd_dev_is_large_bar(struct kfd_dev *dev); 708 709 int kfd_process_create_wq(void); 710 void kfd_process_destroy_wq(void); 711 struct kfd_process *kfd_create_process(struct file *filep); 712 struct kfd_process *kfd_get_process(const struct task_struct *); 713 struct kfd_process *kfd_lookup_process_by_pasid(unsigned int pasid); 714 struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm); 715 void kfd_unref_process(struct kfd_process *p); 716 int kfd_process_evict_queues(struct kfd_process *p); 717 int kfd_process_restore_queues(struct kfd_process *p); 718 void kfd_suspend_all_processes(void); 719 int kfd_resume_all_processes(void); 720 721 int kfd_process_device_init_vm(struct kfd_process_device *pdd, 722 struct file *drm_file); 723 struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev, 724 struct kfd_process *p); 725 struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev, 726 struct kfd_process *p); 727 struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev, 728 struct kfd_process *p); 729 730 int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process, 731 struct vm_area_struct *vma); 732 733 /* KFD process API for creating and translating handles */ 734 int kfd_process_device_create_obj_handle(struct kfd_process_device *pdd, 735 void *mem); 736 void *kfd_process_device_translate_handle(struct kfd_process_device *p, 737 int handle); 738 void kfd_process_device_remove_obj_handle(struct kfd_process_device *pdd, 739 int handle); 740 741 /* Process device data iterator */ 742 struct kfd_process_device *kfd_get_first_process_device_data( 743 struct kfd_process *p); 744 struct kfd_process_device *kfd_get_next_process_device_data( 745 struct kfd_process *p, 746 struct kfd_process_device *pdd); 747 bool kfd_has_process_device_data(struct kfd_process *p); 748 749 /* PASIDs */ 750 int kfd_pasid_init(void); 751 void kfd_pasid_exit(void); 752 bool kfd_set_pasid_limit(unsigned int new_limit); 753 unsigned int kfd_get_pasid_limit(void); 754 unsigned int kfd_pasid_alloc(void); 755 void kfd_pasid_free(unsigned int pasid); 756 757 /* Doorbells */ 758 size_t kfd_doorbell_process_slice(struct kfd_dev *kfd); 759 int kfd_doorbell_init(struct kfd_dev *kfd); 760 void kfd_doorbell_fini(struct kfd_dev *kfd); 761 int kfd_doorbell_mmap(struct kfd_dev *dev, struct kfd_process *process, 762 struct vm_area_struct *vma); 763 void __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd, 764 unsigned int *doorbell_off); 765 void kfd_release_kernel_doorbell(struct kfd_dev *kfd, u32 __iomem *db_addr); 766 u32 read_kernel_doorbell(u32 __iomem *db); 767 void write_kernel_doorbell(void __iomem *db, u32 value); 768 void write_kernel_doorbell64(void __iomem *db, u64 value); 769 unsigned int kfd_doorbell_id_to_offset(struct kfd_dev *kfd, 770 struct kfd_process *process, 771 unsigned int doorbell_id); 772 phys_addr_t kfd_get_process_doorbells(struct kfd_dev *dev, 773 struct kfd_process *process); 774 int kfd_alloc_process_doorbells(struct kfd_process *process); 775 void kfd_free_process_doorbells(struct kfd_process *process); 776 777 /* GTT Sub-Allocator */ 778 779 int kfd_gtt_sa_allocate(struct kfd_dev *kfd, unsigned int size, 780 struct kfd_mem_obj **mem_obj); 781 782 int kfd_gtt_sa_free(struct kfd_dev *kfd, struct kfd_mem_obj *mem_obj); 783 784 extern struct device *kfd_device; 785 786 /* Topology */ 787 int kfd_topology_init(void); 788 void kfd_topology_shutdown(void); 789 int kfd_topology_add_device(struct kfd_dev *gpu); 790 int kfd_topology_remove_device(struct kfd_dev *gpu); 791 struct kfd_topology_device *kfd_topology_device_by_proximity_domain( 792 uint32_t proximity_domain); 793 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id); 794 struct kfd_dev *kfd_device_by_id(uint32_t gpu_id); 795 struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev); 796 struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd); 797 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev); 798 int kfd_numa_node_to_apic_id(int numa_node_id); 799 800 /* Interrupts */ 801 int kfd_interrupt_init(struct kfd_dev *dev); 802 void kfd_interrupt_exit(struct kfd_dev *dev); 803 void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry); 804 bool enqueue_ih_ring_entry(struct kfd_dev *kfd, const void *ih_ring_entry); 805 bool interrupt_is_wanted(struct kfd_dev *dev, 806 const uint32_t *ih_ring_entry, 807 uint32_t *patched_ihre, bool *flag); 808 809 /* Power Management */ 810 void kgd2kfd_suspend(struct kfd_dev *kfd); 811 int kgd2kfd_resume(struct kfd_dev *kfd); 812 813 /* GPU reset */ 814 int kgd2kfd_pre_reset(struct kfd_dev *kfd); 815 int kgd2kfd_post_reset(struct kfd_dev *kfd); 816 817 /* amdkfd Apertures */ 818 int kfd_init_apertures(struct kfd_process *process); 819 820 /* Queue Context Management */ 821 int init_queue(struct queue **q, const struct queue_properties *properties); 822 void uninit_queue(struct queue *q); 823 void print_queue_properties(struct queue_properties *q); 824 void print_queue(struct queue *q); 825 826 struct mqd_manager *mqd_manager_init(enum KFD_MQD_TYPE type, 827 struct kfd_dev *dev); 828 struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type, 829 struct kfd_dev *dev); 830 struct mqd_manager *mqd_manager_init_cik_hawaii(enum KFD_MQD_TYPE type, 831 struct kfd_dev *dev); 832 struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type, 833 struct kfd_dev *dev); 834 struct mqd_manager *mqd_manager_init_vi_tonga(enum KFD_MQD_TYPE type, 835 struct kfd_dev *dev); 836 struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type, 837 struct kfd_dev *dev); 838 struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev); 839 void device_queue_manager_uninit(struct device_queue_manager *dqm); 840 struct kernel_queue *kernel_queue_init(struct kfd_dev *dev, 841 enum kfd_queue_type type); 842 void kernel_queue_uninit(struct kernel_queue *kq); 843 int kfd_process_vm_fault(struct device_queue_manager *dqm, unsigned int pasid); 844 845 /* Process Queue Manager */ 846 struct process_queue_node { 847 struct queue *q; 848 struct kernel_queue *kq; 849 struct list_head process_queue_list; 850 }; 851 852 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd); 853 void kfd_process_dequeue_from_all_devices(struct kfd_process *p); 854 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p); 855 void pqm_uninit(struct process_queue_manager *pqm); 856 int pqm_create_queue(struct process_queue_manager *pqm, 857 struct kfd_dev *dev, 858 struct file *f, 859 struct queue_properties *properties, 860 unsigned int *qid); 861 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid); 862 int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid, 863 struct queue_properties *p); 864 int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid, 865 struct queue_properties *p); 866 struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm, 867 unsigned int qid); 868 int pqm_get_wave_state(struct process_queue_manager *pqm, 869 unsigned int qid, 870 void __user *ctl_stack, 871 u32 *ctl_stack_used_size, 872 u32 *save_area_used_size); 873 874 int amdkfd_fence_wait_timeout(unsigned int *fence_addr, 875 unsigned int fence_value, 876 unsigned int timeout_ms); 877 878 /* Packet Manager */ 879 880 #define KFD_FENCE_COMPLETED (100) 881 #define KFD_FENCE_INIT (10) 882 883 struct packet_manager { 884 struct device_queue_manager *dqm; 885 struct kernel_queue *priv_queue; 886 struct mutex lock; 887 bool allocated; 888 struct kfd_mem_obj *ib_buffer_obj; 889 unsigned int ib_size_bytes; 890 891 const struct packet_manager_funcs *pmf; 892 }; 893 894 struct packet_manager_funcs { 895 /* Support ASIC-specific packet formats for PM4 packets */ 896 int (*map_process)(struct packet_manager *pm, uint32_t *buffer, 897 struct qcm_process_device *qpd); 898 int (*runlist)(struct packet_manager *pm, uint32_t *buffer, 899 uint64_t ib, size_t ib_size_in_dwords, bool chain); 900 int (*set_resources)(struct packet_manager *pm, uint32_t *buffer, 901 struct scheduling_resources *res); 902 int (*map_queues)(struct packet_manager *pm, uint32_t *buffer, 903 struct queue *q, bool is_static); 904 int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer, 905 enum kfd_queue_type type, 906 enum kfd_unmap_queues_filter mode, 907 uint32_t filter_param, bool reset, 908 unsigned int sdma_engine); 909 int (*query_status)(struct packet_manager *pm, uint32_t *buffer, 910 uint64_t fence_address, uint32_t fence_value); 911 int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer); 912 913 /* Packet sizes */ 914 int map_process_size; 915 int runlist_size; 916 int set_resources_size; 917 int map_queues_size; 918 int unmap_queues_size; 919 int query_status_size; 920 int release_mem_size; 921 }; 922 923 extern const struct packet_manager_funcs kfd_vi_pm_funcs; 924 extern const struct packet_manager_funcs kfd_v9_pm_funcs; 925 926 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm); 927 void pm_uninit(struct packet_manager *pm); 928 int pm_send_set_resources(struct packet_manager *pm, 929 struct scheduling_resources *res); 930 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues); 931 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address, 932 uint32_t fence_value); 933 934 int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type, 935 enum kfd_unmap_queues_filter mode, 936 uint32_t filter_param, bool reset, 937 unsigned int sdma_engine); 938 939 void pm_release_ib(struct packet_manager *pm); 940 941 /* Following PM funcs can be shared among VI and AI */ 942 unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size); 943 int pm_set_resources_vi(struct packet_manager *pm, uint32_t *buffer, 944 struct scheduling_resources *res); 945 946 uint64_t kfd_get_number_elems(struct kfd_dev *kfd); 947 948 /* Events */ 949 extern const struct kfd_event_interrupt_class event_interrupt_class_cik; 950 extern const struct kfd_event_interrupt_class event_interrupt_class_v9; 951 952 extern const struct kfd_device_global_init_class device_global_init_class_cik; 953 954 void kfd_event_init_process(struct kfd_process *p); 955 void kfd_event_free_process(struct kfd_process *p); 956 int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma); 957 int kfd_wait_on_events(struct kfd_process *p, 958 uint32_t num_events, void __user *data, 959 bool all, uint32_t user_timeout_ms, 960 uint32_t *wait_result); 961 void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id, 962 uint32_t valid_id_bits); 963 void kfd_signal_iommu_event(struct kfd_dev *dev, 964 unsigned int pasid, unsigned long address, 965 bool is_write_requested, bool is_execute_requested); 966 void kfd_signal_hw_exception_event(unsigned int pasid); 967 int kfd_set_event(struct kfd_process *p, uint32_t event_id); 968 int kfd_reset_event(struct kfd_process *p, uint32_t event_id); 969 int kfd_event_page_set(struct kfd_process *p, void *kernel_address, 970 uint64_t size); 971 int kfd_event_create(struct file *devkfd, struct kfd_process *p, 972 uint32_t event_type, bool auto_reset, uint32_t node_id, 973 uint32_t *event_id, uint32_t *event_trigger_data, 974 uint64_t *event_page_offset, uint32_t *event_slot_index); 975 int kfd_event_destroy(struct kfd_process *p, uint32_t event_id); 976 977 void kfd_signal_vm_fault_event(struct kfd_dev *dev, unsigned int pasid, 978 struct kfd_vm_fault_info *info); 979 980 void kfd_signal_reset_event(struct kfd_dev *dev); 981 982 void kfd_flush_tlb(struct kfd_process_device *pdd); 983 984 int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p); 985 986 bool kfd_is_locked(void); 987 988 /* Debugfs */ 989 #if defined(CONFIG_DEBUG_FS) 990 991 void kfd_debugfs_init(void); 992 void kfd_debugfs_fini(void); 993 int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data); 994 int pqm_debugfs_mqds(struct seq_file *m, void *data); 995 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data); 996 int dqm_debugfs_hqds(struct seq_file *m, void *data); 997 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data); 998 int pm_debugfs_runlist(struct seq_file *m, void *data); 999 1000 int kfd_debugfs_hang_hws(struct kfd_dev *dev); 1001 int pm_debugfs_hang_hws(struct packet_manager *pm); 1002 int dqm_debugfs_execute_queues(struct device_queue_manager *dqm); 1003 1004 #else 1005 1006 static inline void kfd_debugfs_init(void) {} 1007 static inline void kfd_debugfs_fini(void) {} 1008 1009 #endif 1010 1011 #endif 1012