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