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 <linux/sysfs.h>
39 #include <kgd_kfd_interface.h>
40
41 #include "amd_shared.h"
42
43 #define KFD_MAX_RING_ENTRY_SIZE 8
44
45 #define KFD_SYSFS_FILE_MODE 0444
46
47 /* GPU ID hash width in bits */
48 #define KFD_GPU_ID_HASH_WIDTH 16
49
50 /* Use upper bits of mmap offset to store KFD driver specific information.
51 * BITS[63:62] - Encode MMAP type
52 * BITS[61:46] - Encode gpu_id. To identify to which GPU the offset belongs to
53 * BITS[45:0] - MMAP offset value
54 *
55 * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these
56 * defines are w.r.t to PAGE_SIZE
57 */
58 #define KFD_MMAP_TYPE_SHIFT (62 - PAGE_SHIFT)
59 #define KFD_MMAP_TYPE_MASK (0x3ULL << KFD_MMAP_TYPE_SHIFT)
60 #define KFD_MMAP_TYPE_DOORBELL (0x3ULL << KFD_MMAP_TYPE_SHIFT)
61 #define KFD_MMAP_TYPE_EVENTS (0x2ULL << KFD_MMAP_TYPE_SHIFT)
62 #define KFD_MMAP_TYPE_RESERVED_MEM (0x1ULL << KFD_MMAP_TYPE_SHIFT)
63 #define KFD_MMAP_TYPE_MMIO (0x0ULL << KFD_MMAP_TYPE_SHIFT)
64
65 #define KFD_MMAP_GPU_ID_SHIFT (46 - PAGE_SHIFT)
66 #define KFD_MMAP_GPU_ID_MASK (((1ULL << KFD_GPU_ID_HASH_WIDTH) - 1) \
67 << KFD_MMAP_GPU_ID_SHIFT)
68 #define KFD_MMAP_GPU_ID(gpu_id) ((((uint64_t)gpu_id) << KFD_MMAP_GPU_ID_SHIFT)\
69 & KFD_MMAP_GPU_ID_MASK)
70 #define KFD_MMAP_GPU_ID_GET(offset) ((offset & KFD_MMAP_GPU_ID_MASK) \
71 >> KFD_MMAP_GPU_ID_SHIFT)
72
73 #define KFD_MMAP_OFFSET_VALUE_MASK (0x3FFFFFFFFFFFULL >> PAGE_SHIFT)
74 #define KFD_MMAP_OFFSET_VALUE_GET(offset) (offset & KFD_MMAP_OFFSET_VALUE_MASK)
75
76 /*
77 * When working with cp scheduler we should assign the HIQ manually or via
78 * the amdgpu driver to a fixed hqd slot, here are the fixed HIQ hqd slot
79 * definitions for Kaveri. In Kaveri only the first ME queues participates
80 * in the cp scheduling taking that in mind we set the HIQ slot in the
81 * second ME.
82 */
83 #define KFD_CIK_HIQ_PIPE 4
84 #define KFD_CIK_HIQ_QUEUE 0
85
86 /* Macro for allocating structures */
87 #define kfd_alloc_struct(ptr_to_struct) \
88 ((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))
89
90 #define KFD_MAX_NUM_OF_PROCESSES 512
91 #define KFD_MAX_NUM_OF_QUEUES_PER_PROCESS 1024
92
93 /*
94 * Size of the per-process TBA+TMA buffer: 2 pages
95 *
96 * The first page is the TBA used for the CWSR ISA code. The second
97 * page is used as TMA for daisy changing a user-mode trap handler.
98 */
99 #define KFD_CWSR_TBA_TMA_SIZE (PAGE_SIZE * 2)
100 #define KFD_CWSR_TMA_OFFSET PAGE_SIZE
101
102 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE \
103 (KFD_MAX_NUM_OF_PROCESSES * \
104 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
105
106 #define KFD_KERNEL_QUEUE_SIZE 2048
107
108 #define KFD_UNMAP_LATENCY_MS (4000)
109
110 /*
111 * 512 = 0x200
112 * The doorbell index distance between SDMA RLC (2*i) and (2*i+1) in the
113 * same SDMA engine on SOC15, which has 8-byte doorbells for SDMA.
114 * 512 8-byte doorbell distance (i.e. one page away) ensures that SDMA RLC
115 * (2*i+1) doorbells (in terms of the lower 12 bit address) lie exactly in
116 * the OFFSET and SIZE set in registers like BIF_SDMA0_DOORBELL_RANGE.
117 */
118 #define KFD_QUEUE_DOORBELL_MIRROR_OFFSET 512
119
120
121 /*
122 * Kernel module parameter to specify maximum number of supported queues per
123 * device
124 */
125 extern int max_num_of_queues_per_device;
126
127
128 /* Kernel module parameter to specify the scheduling policy */
129 extern int sched_policy;
130
131 /*
132 * Kernel module parameter to specify the maximum process
133 * number per HW scheduler
134 */
135 extern int hws_max_conc_proc;
136
137 extern int cwsr_enable;
138
139 /*
140 * Kernel module parameter to specify whether to send sigterm to HSA process on
141 * unhandled exception
142 */
143 extern int send_sigterm;
144
145 /*
146 * This kernel module is used to simulate large bar machine on non-large bar
147 * enabled machines.
148 */
149 extern int debug_largebar;
150
151 /*
152 * Ignore CRAT table during KFD initialization, can be used to work around
153 * broken CRAT tables on some AMD systems
154 */
155 extern int ignore_crat;
156
157 /*
158 * Set sh_mem_config.retry_disable on Vega10
159 */
160 extern int amdgpu_noretry;
161
162 /*
163 * Halt if HWS hang is detected
164 */
165 extern int halt_if_hws_hang;
166
167 /*
168 * Whether MEC FW support GWS barriers
169 */
170 extern bool hws_gws_support;
171
172 /*
173 * Queue preemption timeout in ms
174 */
175 extern int queue_preemption_timeout_ms;
176
177 enum cache_policy {
178 cache_policy_coherent,
179 cache_policy_noncoherent
180 };
181
182 #define KFD_IS_VI(chip) ((chip) >= CHIP_CARRIZO && (chip) <= CHIP_POLARIS11)
183 #define KFD_IS_DGPU(chip) (((chip) >= CHIP_TONGA && \
184 (chip) <= CHIP_NAVI10) || \
185 (chip) == CHIP_HAWAII)
186 #define KFD_IS_SOC15(chip) ((chip) >= CHIP_VEGA10)
187
188 struct kfd_event_interrupt_class {
189 bool (*interrupt_isr)(struct kfd_dev *dev,
190 const uint32_t *ih_ring_entry, uint32_t *patched_ihre,
191 bool *patched_flag);
192 void (*interrupt_wq)(struct kfd_dev *dev,
193 const uint32_t *ih_ring_entry);
194 };
195
196 struct kfd_device_info {
197 enum amd_asic_type asic_family;
198 const char *asic_name;
199 const struct kfd_event_interrupt_class *event_interrupt_class;
200 unsigned int max_pasid_bits;
201 unsigned int max_no_of_hqd;
202 unsigned int doorbell_size;
203 size_t ih_ring_entry_size;
204 uint8_t num_of_watch_points;
205 uint16_t mqd_size_aligned;
206 bool supports_cwsr;
207 bool needs_iommu_device;
208 bool needs_pci_atomics;
209 unsigned int num_sdma_engines;
210 unsigned int num_xgmi_sdma_engines;
211 unsigned int num_sdma_queues_per_engine;
212 };
213
214 struct kfd_mem_obj {
215 uint32_t range_start;
216 uint32_t range_end;
217 uint64_t gpu_addr;
218 uint32_t *cpu_ptr;
219 void *gtt_mem;
220 };
221
222 struct kfd_vmid_info {
223 uint32_t first_vmid_kfd;
224 uint32_t last_vmid_kfd;
225 uint32_t vmid_num_kfd;
226 };
227
228 struct kfd_dev {
229 struct kgd_dev *kgd;
230
231 const struct kfd_device_info *device_info;
232 struct pci_dev *pdev;
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_id_offset; /* Doorbell offset (from KFD doorbell
241 * to HW doorbell, GFX reserved some
242 * at the start)
243 */
244 u32 __iomem *doorbell_kernel_ptr; /* This is a pointer for a doorbells
245 * page used by kernel queue
246 */
247
248 struct kgd2kfd_shared_resources shared_resources;
249 struct kfd_vmid_info vm_info;
250
251 const struct kfd2kgd_calls *kfd2kgd;
252 struct mutex doorbell_mutex;
253 DECLARE_BITMAP(doorbell_available_index,
254 KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
255
256 void *gtt_mem;
257 uint64_t gtt_start_gpu_addr;
258 void *gtt_start_cpu_ptr;
259 void *gtt_sa_bitmap;
260 struct mutex gtt_sa_lock;
261 unsigned int gtt_sa_chunk_size;
262 unsigned int gtt_sa_num_of_chunks;
263
264 /* Interrupts */
265 struct kfifo ih_fifo;
266 struct workqueue_struct *ih_wq;
267 struct work_struct interrupt_work;
268 spinlock_t interrupt_lock;
269
270 /* QCM Device instance */
271 struct device_queue_manager *dqm;
272
273 bool init_complete;
274 /*
275 * Interrupts of interest to KFD are copied
276 * from the HW ring into a SW ring.
277 */
278 bool interrupts_active;
279
280 /* Debug manager */
281 struct kfd_dbgmgr *dbgmgr;
282
283 /* Firmware versions */
284 uint16_t mec_fw_version;
285 uint16_t sdma_fw_version;
286
287 /* Maximum process number mapped to HW scheduler */
288 unsigned int max_proc_per_quantum;
289
290 /* CWSR */
291 bool cwsr_enabled;
292 const void *cwsr_isa;
293 unsigned int cwsr_isa_size;
294
295 /* xGMI */
296 uint64_t hive_id;
297
298 bool pci_atomic_requested;
299
300 /* SRAM ECC flag */
301 atomic_t sram_ecc_flag;
302
303 /* Compute Profile ref. count */
304 atomic_t compute_profile;
305
306 /* Global GWS resource shared b/t processes*/
307 void *gws;
308 };
309
310 enum kfd_mempool {
311 KFD_MEMPOOL_SYSTEM_CACHEABLE = 1,
312 KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2,
313 KFD_MEMPOOL_FRAMEBUFFER = 3,
314 };
315
316 /* Character device interface */
317 int kfd_chardev_init(void);
318 void kfd_chardev_exit(void);
319 struct device *kfd_chardev(void);
320
321 /**
322 * enum kfd_unmap_queues_filter
323 *
324 * @KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE: Preempts single queue.
325 *
326 * @KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES: Preempts all queues in the
327 * running queues list.
328 *
329 * @KFD_UNMAP_QUEUES_FILTER_BY_PASID: Preempts queues that belongs to
330 * specific process.
331 *
332 */
333 enum kfd_unmap_queues_filter {
334 KFD_UNMAP_QUEUES_FILTER_SINGLE_QUEUE,
335 KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES,
336 KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES,
337 KFD_UNMAP_QUEUES_FILTER_BY_PASID
338 };
339
340 /**
341 * enum kfd_queue_type
342 *
343 * @KFD_QUEUE_TYPE_COMPUTE: Regular user mode queue type.
344 *
345 * @KFD_QUEUE_TYPE_SDMA: Sdma user mode queue type.
346 *
347 * @KFD_QUEUE_TYPE_HIQ: HIQ queue type.
348 *
349 * @KFD_QUEUE_TYPE_DIQ: DIQ queue type.
350 */
351 enum kfd_queue_type {
352 KFD_QUEUE_TYPE_COMPUTE,
353 KFD_QUEUE_TYPE_SDMA,
354 KFD_QUEUE_TYPE_HIQ,
355 KFD_QUEUE_TYPE_DIQ,
356 KFD_QUEUE_TYPE_SDMA_XGMI
357 };
358
359 enum kfd_queue_format {
360 KFD_QUEUE_FORMAT_PM4,
361 KFD_QUEUE_FORMAT_AQL
362 };
363
364 enum KFD_QUEUE_PRIORITY {
365 KFD_QUEUE_PRIORITY_MINIMUM = 0,
366 KFD_QUEUE_PRIORITY_MAXIMUM = 15
367 };
368
369 /**
370 * struct queue_properties
371 *
372 * @type: The queue type.
373 *
374 * @queue_id: Queue identifier.
375 *
376 * @queue_address: Queue ring buffer address.
377 *
378 * @queue_size: Queue ring buffer size.
379 *
380 * @priority: Defines the queue priority relative to other queues in the
381 * process.
382 * This is just an indication and HW scheduling may override the priority as
383 * necessary while keeping the relative prioritization.
384 * the priority granularity is from 0 to f which f is the highest priority.
385 * currently all queues are initialized with the highest priority.
386 *
387 * @queue_percent: This field is partially implemented and currently a zero in
388 * this field defines that the queue is non active.
389 *
390 * @read_ptr: User space address which points to the number of dwords the
391 * cp read from the ring buffer. This field updates automatically by the H/W.
392 *
393 * @write_ptr: Defines the number of dwords written to the ring buffer.
394 *
395 * @doorbell_ptr: This field aim is to notify the H/W of new packet written to
396 * the queue ring buffer. This field should be similar to write_ptr and the
397 * user should update this field after he updated the write_ptr.
398 *
399 * @doorbell_off: The doorbell offset in the doorbell pci-bar.
400 *
401 * @is_interop: Defines if this is a interop queue. Interop queue means that
402 * the queue can access both graphics and compute resources.
403 *
404 * @is_evicted: Defines if the queue is evicted. Only active queues
405 * are evicted, rendering them inactive.
406 *
407 * @is_active: Defines if the queue is active or not. @is_active and
408 * @is_evicted are protected by the DQM lock.
409 *
410 * @vmid: If the scheduling mode is no cp scheduling the field defines the vmid
411 * of the queue.
412 *
413 * This structure represents the queue properties for each queue no matter if
414 * it's user mode or kernel mode queue.
415 *
416 */
417 struct queue_properties {
418 enum kfd_queue_type type;
419 enum kfd_queue_format format;
420 unsigned int queue_id;
421 uint64_t queue_address;
422 uint64_t queue_size;
423 uint32_t priority;
424 uint32_t queue_percent;
425 uint32_t *read_ptr;
426 uint32_t *write_ptr;
427 void __iomem *doorbell_ptr;
428 uint32_t doorbell_off;
429 bool is_interop;
430 bool is_evicted;
431 bool is_active;
432 /* Not relevant for user mode queues in cp scheduling */
433 unsigned int vmid;
434 /* Relevant only for sdma queues*/
435 uint32_t sdma_engine_id;
436 uint32_t sdma_queue_id;
437 uint32_t sdma_vm_addr;
438 /* Relevant only for VI */
439 uint64_t eop_ring_buffer_address;
440 uint32_t eop_ring_buffer_size;
441 uint64_t ctx_save_restore_area_address;
442 uint32_t ctx_save_restore_area_size;
443 uint32_t ctl_stack_size;
444 uint64_t tba_addr;
445 uint64_t tma_addr;
446 /* Relevant for CU */
447 uint32_t cu_mask_count; /* Must be a multiple of 32 */
448 uint32_t *cu_mask;
449 };
450
451 #define QUEUE_IS_ACTIVE(q) ((q).queue_size > 0 && \
452 (q).queue_address != 0 && \
453 (q).queue_percent > 0 && \
454 !(q).is_evicted)
455
456 /**
457 * struct queue
458 *
459 * @list: Queue linked list.
460 *
461 * @mqd: The queue MQD.
462 *
463 * @mqd_mem_obj: The MQD local gpu memory object.
464 *
465 * @gart_mqd_addr: The MQD gart mc address.
466 *
467 * @properties: The queue properties.
468 *
469 * @mec: Used only in no cp scheduling mode and identifies to micro engine id
470 * that the queue should be execute on.
471 *
472 * @pipe: Used only in no cp scheduling mode and identifies the queue's pipe
473 * id.
474 *
475 * @queue: Used only in no cp scheduliong mode and identifies the queue's slot.
476 *
477 * @process: The kfd process that created this queue.
478 *
479 * @device: The kfd device that created this queue.
480 *
481 * @gws: Pointing to gws kgd_mem if this is a gws control queue; NULL
482 * otherwise.
483 *
484 * This structure represents user mode compute queues.
485 * It contains all the necessary data to handle such queues.
486 *
487 */
488
489 struct queue {
490 struct list_head list;
491 void *mqd;
492 struct kfd_mem_obj *mqd_mem_obj;
493 uint64_t gart_mqd_addr;
494 struct queue_properties properties;
495
496 uint32_t mec;
497 uint32_t pipe;
498 uint32_t queue;
499
500 unsigned int sdma_id;
501 unsigned int doorbell_id;
502
503 struct kfd_process *process;
504 struct kfd_dev *device;
505 void *gws;
506 };
507
508 /*
509 * Please read the kfd_mqd_manager.h description.
510 */
511 enum KFD_MQD_TYPE {
512 KFD_MQD_TYPE_COMPUTE = 0, /* for no cp scheduling */
513 KFD_MQD_TYPE_HIQ, /* 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 unsigned int 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_doorbell_id_to_offset(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);
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 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid);
908 int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
909 struct queue_properties *p);
910 int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid,
911 struct queue_properties *p);
912 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
913 void *gws);
914 struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm,
915 unsigned int qid);
916 int pqm_get_wave_state(struct process_queue_manager *pqm,
917 unsigned int qid,
918 void __user *ctl_stack,
919 u32 *ctl_stack_used_size,
920 u32 *save_area_used_size);
921
922 int amdkfd_fence_wait_timeout(unsigned int *fence_addr,
923 unsigned int fence_value,
924 unsigned int timeout_ms);
925
926 /* Packet Manager */
927
928 #define KFD_FENCE_COMPLETED (100)
929 #define KFD_FENCE_INIT (10)
930
931 struct packet_manager {
932 struct device_queue_manager *dqm;
933 struct kernel_queue *priv_queue;
934 struct mutex lock;
935 bool allocated;
936 struct kfd_mem_obj *ib_buffer_obj;
937 unsigned int ib_size_bytes;
938 bool is_over_subscription;
939
940 const struct packet_manager_funcs *pmf;
941 };
942
943 struct packet_manager_funcs {
944 /* Support ASIC-specific packet formats for PM4 packets */
945 int (*map_process)(struct packet_manager *pm, uint32_t *buffer,
946 struct qcm_process_device *qpd);
947 int (*runlist)(struct packet_manager *pm, uint32_t *buffer,
948 uint64_t ib, size_t ib_size_in_dwords, bool chain);
949 int (*set_resources)(struct packet_manager *pm, uint32_t *buffer,
950 struct scheduling_resources *res);
951 int (*map_queues)(struct packet_manager *pm, uint32_t *buffer,
952 struct queue *q, bool is_static);
953 int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer,
954 enum kfd_queue_type type,
955 enum kfd_unmap_queues_filter mode,
956 uint32_t filter_param, bool reset,
957 unsigned int sdma_engine);
958 int (*query_status)(struct packet_manager *pm, uint32_t *buffer,
959 uint64_t fence_address, uint32_t fence_value);
960 int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer);
961
962 /* Packet sizes */
963 int map_process_size;
964 int runlist_size;
965 int set_resources_size;
966 int map_queues_size;
967 int unmap_queues_size;
968 int query_status_size;
969 int release_mem_size;
970 };
971
972 extern const struct packet_manager_funcs kfd_vi_pm_funcs;
973 extern const struct packet_manager_funcs kfd_v9_pm_funcs;
974 extern const struct packet_manager_funcs kfd_v10_pm_funcs;
975
976 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm);
977 void pm_uninit(struct packet_manager *pm);
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 int pm_set_resources_vi(struct packet_manager *pm, uint32_t *buffer,
994 struct scheduling_resources *res);
995
996
997 uint64_t kfd_get_number_elems(struct kfd_dev *kfd);
998
999 /* Events */
1000 extern const struct kfd_event_interrupt_class event_interrupt_class_cik;
1001 extern const struct kfd_event_interrupt_class event_interrupt_class_v9;
1002
1003 extern const struct kfd_device_global_init_class device_global_init_class_cik;
1004
1005 void kfd_event_init_process(struct kfd_process *p);
1006 void kfd_event_free_process(struct kfd_process *p);
1007 int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma);
1008 int kfd_wait_on_events(struct kfd_process *p,
1009 uint32_t num_events, void __user *data,
1010 bool all, uint32_t user_timeout_ms,
1011 uint32_t *wait_result);
1012 void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id,
1013 uint32_t valid_id_bits);
1014 void kfd_signal_iommu_event(struct kfd_dev *dev,
1015 unsigned int pasid, unsigned long address,
1016 bool is_write_requested, bool is_execute_requested);
1017 void kfd_signal_hw_exception_event(unsigned int pasid);
1018 int kfd_set_event(struct kfd_process *p, uint32_t event_id);
1019 int kfd_reset_event(struct kfd_process *p, uint32_t event_id);
1020 int kfd_event_page_set(struct kfd_process *p, void *kernel_address,
1021 uint64_t size);
1022 int kfd_event_create(struct file *devkfd, struct kfd_process *p,
1023 uint32_t event_type, bool auto_reset, uint32_t node_id,
1024 uint32_t *event_id, uint32_t *event_trigger_data,
1025 uint64_t *event_page_offset, uint32_t *event_slot_index);
1026 int kfd_event_destroy(struct kfd_process *p, uint32_t event_id);
1027
1028 void kfd_signal_vm_fault_event(struct kfd_dev *dev, unsigned int pasid,
1029 struct kfd_vm_fault_info *info);
1030
1031 void kfd_signal_reset_event(struct kfd_dev *dev);
1032
1033 void kfd_flush_tlb(struct kfd_process_device *pdd);
1034
1035 int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process *p);
1036
1037 bool kfd_is_locked(void);
1038
1039 /* Compute profile */
1040 void kfd_inc_compute_active(struct kfd_dev *dev);
1041 void kfd_dec_compute_active(struct kfd_dev *dev);
1042
1043 /* Debugfs */
1044 #if defined(CONFIG_DEBUG_FS)
1045
1046 void kfd_debugfs_init(void);
1047 void kfd_debugfs_fini(void);
1048 int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data);
1049 int pqm_debugfs_mqds(struct seq_file *m, void *data);
1050 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data);
1051 int dqm_debugfs_hqds(struct seq_file *m, void *data);
1052 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data);
1053 int pm_debugfs_runlist(struct seq_file *m, void *data);
1054
1055 int kfd_debugfs_hang_hws(struct kfd_dev *dev);
1056 int pm_debugfs_hang_hws(struct packet_manager *pm);
1057 int dqm_debugfs_execute_queues(struct device_queue_manager *dqm);
1058
1059 #else
1060
kfd_debugfs_init(void)1061 static inline void kfd_debugfs_init(void) {}
kfd_debugfs_fini(void)1062 static inline void kfd_debugfs_fini(void) {}
1063
1064 #endif
1065
1066 #endif
1067
