1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2 /*
3  * Copyright 2014-2022 Advanced Micro Devices, Inc.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21  * OTHER DEALINGS IN THE SOFTWARE.
22  */
23 
24 #ifndef KFD_PRIV_H_INCLUDED
25 #define KFD_PRIV_H_INCLUDED
26 
27 #include <linux/hashtable.h>
28 #include <linux/mmu_notifier.h>
29 #include <linux/memremap.h>
30 #include <linux/mutex.h>
31 #include <linux/types.h>
32 #include <linux/atomic.h>
33 #include <linux/workqueue.h>
34 #include <linux/spinlock.h>
35 #include <linux/kfd_ioctl.h>
36 #include <linux/idr.h>
37 #include <linux/kfifo.h>
38 #include <linux/seq_file.h>
39 #include <linux/kref.h>
40 #include <linux/sysfs.h>
41 #include <linux/device_cgroup.h>
42 #include <drm/drm_file.h>
43 #include <drm/drm_drv.h>
44 #include <drm/drm_device.h>
45 #include <drm/drm_ioctl.h>
46 #include <kgd_kfd_interface.h>
47 #include <linux/swap.h>
48 
49 #include "amd_shared.h"
50 #include "amdgpu.h"
51 
52 #define KFD_MAX_RING_ENTRY_SIZE	8
53 
54 #define KFD_SYSFS_FILE_MODE 0444
55 
56 /* GPU ID hash width in bits */
57 #define KFD_GPU_ID_HASH_WIDTH 16
58 
59 /* Use upper bits of mmap offset to store KFD driver specific information.
60  * BITS[63:62] - Encode MMAP type
61  * BITS[61:46] - Encode gpu_id. To identify to which GPU the offset belongs to
62  * BITS[45:0]  - MMAP offset value
63  *
64  * NOTE: struct vm_area_struct.vm_pgoff uses offset in pages. Hence, these
65  *  defines are w.r.t to PAGE_SIZE
66  */
67 #define KFD_MMAP_TYPE_SHIFT	62
68 #define KFD_MMAP_TYPE_MASK	(0x3ULL << KFD_MMAP_TYPE_SHIFT)
69 #define KFD_MMAP_TYPE_DOORBELL	(0x3ULL << KFD_MMAP_TYPE_SHIFT)
70 #define KFD_MMAP_TYPE_EVENTS	(0x2ULL << KFD_MMAP_TYPE_SHIFT)
71 #define KFD_MMAP_TYPE_RESERVED_MEM	(0x1ULL << KFD_MMAP_TYPE_SHIFT)
72 #define KFD_MMAP_TYPE_MMIO	(0x0ULL << KFD_MMAP_TYPE_SHIFT)
73 
74 #define KFD_MMAP_GPU_ID_SHIFT 46
75 #define KFD_MMAP_GPU_ID_MASK (((1ULL << KFD_GPU_ID_HASH_WIDTH) - 1) \
76 				<< KFD_MMAP_GPU_ID_SHIFT)
77 #define KFD_MMAP_GPU_ID(gpu_id) ((((uint64_t)gpu_id) << KFD_MMAP_GPU_ID_SHIFT)\
78 				& KFD_MMAP_GPU_ID_MASK)
79 #define KFD_MMAP_GET_GPU_ID(offset)    ((offset & KFD_MMAP_GPU_ID_MASK) \
80 				>> KFD_MMAP_GPU_ID_SHIFT)
81 
82 /*
83  * When working with cp scheduler we should assign the HIQ manually or via
84  * the amdgpu driver to a fixed hqd slot, here are the fixed HIQ hqd slot
85  * definitions for Kaveri. In Kaveri only the first ME queues participates
86  * in the cp scheduling taking that in mind we set the HIQ slot in the
87  * second ME.
88  */
89 #define KFD_CIK_HIQ_PIPE 4
90 #define KFD_CIK_HIQ_QUEUE 0
91 
92 /* Macro for allocating structures */
93 #define kfd_alloc_struct(ptr_to_struct)	\
94 	((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))
95 
96 #define KFD_MAX_NUM_OF_PROCESSES 512
97 #define KFD_MAX_NUM_OF_QUEUES_PER_PROCESS 1024
98 
99 /*
100  * Size of the per-process TBA+TMA buffer: 2 pages
101  *
102  * The first page is the TBA used for the CWSR ISA code. The second
103  * page is used as TMA for user-mode trap handler setup in daisy-chain mode.
104  */
105 #define KFD_CWSR_TBA_TMA_SIZE (PAGE_SIZE * 2)
106 #define KFD_CWSR_TMA_OFFSET PAGE_SIZE
107 
108 #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE		\
109 	(KFD_MAX_NUM_OF_PROCESSES *			\
110 			KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
111 
112 #define KFD_KERNEL_QUEUE_SIZE 2048
113 
114 #define KFD_UNMAP_LATENCY_MS	(4000)
115 
116 #define KFD_MAX_SDMA_QUEUES	128
117 
118 /*
119  * 512 = 0x200
120  * The doorbell index distance between SDMA RLC (2*i) and (2*i+1) in the
121  * same SDMA engine on SOC15, which has 8-byte doorbells for SDMA.
122  * 512 8-byte doorbell distance (i.e. one page away) ensures that SDMA RLC
123  * (2*i+1) doorbells (in terms of the lower 12 bit address) lie exactly in
124  * the OFFSET and SIZE set in registers like BIF_SDMA0_DOORBELL_RANGE.
125  */
126 #define KFD_QUEUE_DOORBELL_MIRROR_OFFSET 512
127 
128 /**
129  * enum kfd_ioctl_flags - KFD ioctl flags
130  * Various flags that can be set in &amdkfd_ioctl_desc.flags to control how
131  * userspace can use a given ioctl.
132  */
133 enum kfd_ioctl_flags {
134 	/*
135 	 * @KFD_IOC_FLAG_CHECKPOINT_RESTORE:
136 	 * Certain KFD ioctls such as AMDKFD_IOC_CRIU_OP can potentially
137 	 * perform privileged operations and load arbitrary data into MQDs and
138 	 * eventually HQD registers when the queue is mapped by HWS. In order to
139 	 * prevent this we should perform additional security checks.
140 	 *
141 	 * This is equivalent to callers with the CHECKPOINT_RESTORE capability.
142 	 *
143 	 * Note: Since earlier versions of docker do not support CHECKPOINT_RESTORE,
144 	 * we also allow ioctls with SYS_ADMIN capability.
145 	 */
146 	KFD_IOC_FLAG_CHECKPOINT_RESTORE = BIT(0),
147 };
148 /*
149  * Kernel module parameter to specify maximum number of supported queues per
150  * device
151  */
152 extern int max_num_of_queues_per_device;
153 
154 
155 /* Kernel module parameter to specify the scheduling policy */
156 extern int sched_policy;
157 
158 /*
159  * Kernel module parameter to specify the maximum process
160  * number per HW scheduler
161  */
162 extern int hws_max_conc_proc;
163 
164 extern int cwsr_enable;
165 
166 /*
167  * Kernel module parameter to specify whether to send sigterm to HSA process on
168  * unhandled exception
169  */
170 extern int send_sigterm;
171 
172 /*
173  * This kernel module is used to simulate large bar machine on non-large bar
174  * enabled machines.
175  */
176 extern int debug_largebar;
177 
178 /* Set sh_mem_config.retry_disable on GFX v9 */
179 extern int amdgpu_noretry;
180 
181 /* Halt if HWS hang is detected */
182 extern int halt_if_hws_hang;
183 
184 /* Whether MEC FW support GWS barriers */
185 extern bool hws_gws_support;
186 
187 /* Queue preemption timeout in ms */
188 extern int queue_preemption_timeout_ms;
189 
190 /*
191  * Don't evict process queues on vm fault
192  */
193 extern int amdgpu_no_queue_eviction_on_vm_fault;
194 
195 /* Enable eviction debug messages */
196 extern bool debug_evictions;
197 
198 extern struct mutex kfd_processes_mutex;
199 
200 enum cache_policy {
201 	cache_policy_coherent,
202 	cache_policy_noncoherent
203 };
204 
205 #define KFD_GC_VERSION(dev) ((dev)->adev->ip_versions[GC_HWIP][0])
206 #define KFD_IS_SOC15(dev)   ((KFD_GC_VERSION(dev)) >= (IP_VERSION(9, 0, 1)))
207 #define KFD_SUPPORT_XNACK_PER_PROCESS(dev)\
208 	((KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2)) ||	\
209 	 (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 3)))
210 
211 struct kfd_node;
212 
213 struct kfd_event_interrupt_class {
214 	bool (*interrupt_isr)(struct kfd_node *dev,
215 			const uint32_t *ih_ring_entry, uint32_t *patched_ihre,
216 			bool *patched_flag);
217 	void (*interrupt_wq)(struct kfd_node *dev,
218 			const uint32_t *ih_ring_entry);
219 };
220 
221 struct kfd_device_info {
222 	uint32_t gfx_target_version;
223 	const struct kfd_event_interrupt_class *event_interrupt_class;
224 	unsigned int max_pasid_bits;
225 	unsigned int max_no_of_hqd;
226 	unsigned int doorbell_size;
227 	size_t ih_ring_entry_size;
228 	uint8_t num_of_watch_points;
229 	uint16_t mqd_size_aligned;
230 	bool supports_cwsr;
231 	bool needs_pci_atomics;
232 	uint32_t no_atomic_fw_version;
233 	unsigned int num_sdma_queues_per_engine;
234 	unsigned int num_reserved_sdma_queues_per_engine;
235 	DECLARE_BITMAP(reserved_sdma_queues_bitmap, KFD_MAX_SDMA_QUEUES);
236 };
237 
238 unsigned int kfd_get_num_sdma_engines(struct kfd_node *kdev);
239 unsigned int kfd_get_num_xgmi_sdma_engines(struct kfd_node *kdev);
240 
241 struct kfd_mem_obj {
242 	uint32_t range_start;
243 	uint32_t range_end;
244 	uint64_t gpu_addr;
245 	uint32_t *cpu_ptr;
246 	void *gtt_mem;
247 };
248 
249 struct kfd_vmid_info {
250 	uint32_t first_vmid_kfd;
251 	uint32_t last_vmid_kfd;
252 	uint32_t vmid_num_kfd;
253 };
254 
255 #define MAX_KFD_NODES	8
256 
257 struct kfd_dev;
258 
259 struct kfd_node {
260 	unsigned int node_id;
261 	struct amdgpu_device *adev;     /* Duplicated here along with keeping
262 					 * a copy in kfd_dev to save a hop
263 					 */
264 	const struct kfd2kgd_calls *kfd2kgd; /* Duplicated here along with
265 					      * keeping a copy in kfd_dev to
266 					      * save a hop
267 					      */
268 	struct kfd_vmid_info vm_info;
269 	unsigned int id;                /* topology stub index */
270 	uint32_t xcc_mask; /* Instance mask of XCCs present */
271 	struct amdgpu_xcp *xcp;
272 
273 	/* Interrupts */
274 	struct kfifo ih_fifo;
275 	struct workqueue_struct *ih_wq;
276 	struct work_struct interrupt_work;
277 	spinlock_t interrupt_lock;
278 
279 	/*
280 	 * Interrupts of interest to KFD are copied
281 	 * from the HW ring into a SW ring.
282 	 */
283 	bool interrupts_active;
284 	uint32_t interrupt_bitmap; /* Only used for GFX 9.4.3 */
285 
286 	/* QCM Device instance */
287 	struct device_queue_manager *dqm;
288 
289 	/* Global GWS resource shared between processes */
290 	void *gws;
291 	bool gws_debug_workaround;
292 
293 	/* Clients watching SMI events */
294 	struct list_head smi_clients;
295 	spinlock_t smi_lock;
296 	uint32_t reset_seq_num;
297 
298 	/* SRAM ECC flag */
299 	atomic_t sram_ecc_flag;
300 
301 	/*spm process id */
302 	unsigned int spm_pasid;
303 
304 	/* Maximum process number mapped to HW scheduler */
305 	unsigned int max_proc_per_quantum;
306 
307 	unsigned int compute_vmid_bitmap;
308 
309 	struct kfd_local_mem_info local_mem_info;
310 
311 	struct kfd_dev *kfd;
312 };
313 
314 struct kfd_dev {
315 	struct amdgpu_device *adev;
316 
317 	struct kfd_device_info device_info;
318 
319 	u32 __iomem *doorbell_kernel_ptr; /* This is a pointer for a doorbells
320 					   * page used by kernel queue
321 					   */
322 
323 	struct kgd2kfd_shared_resources shared_resources;
324 
325 	const struct kfd2kgd_calls *kfd2kgd;
326 	struct mutex doorbell_mutex;
327 
328 	void *gtt_mem;
329 	uint64_t gtt_start_gpu_addr;
330 	void *gtt_start_cpu_ptr;
331 	void *gtt_sa_bitmap;
332 	struct mutex gtt_sa_lock;
333 	unsigned int gtt_sa_chunk_size;
334 	unsigned int gtt_sa_num_of_chunks;
335 
336 	bool init_complete;
337 
338 	/* Firmware versions */
339 	uint16_t mec_fw_version;
340 	uint16_t mec2_fw_version;
341 	uint16_t sdma_fw_version;
342 
343 	/* CWSR */
344 	bool cwsr_enabled;
345 	const void *cwsr_isa;
346 	unsigned int cwsr_isa_size;
347 
348 	/* xGMI */
349 	uint64_t hive_id;
350 
351 	bool pci_atomic_requested;
352 
353 	/* Compute Profile ref. count */
354 	atomic_t compute_profile;
355 
356 	struct ida doorbell_ida;
357 	unsigned int max_doorbell_slices;
358 
359 	int noretry;
360 
361 	struct kfd_node *nodes[MAX_KFD_NODES];
362 	unsigned int num_nodes;
363 
364 	/* Track per device allocated watch points */
365 	uint32_t alloc_watch_ids;
366 	spinlock_t watch_points_lock;
367 
368 	/* Kernel doorbells for KFD device */
369 	struct amdgpu_bo *doorbells;
370 
371 	/* bitmap for dynamic doorbell allocation from doorbell object */
372 	unsigned long *doorbell_bitmap;
373 };
374 
375 enum kfd_mempool {
376 	KFD_MEMPOOL_SYSTEM_CACHEABLE = 1,
377 	KFD_MEMPOOL_SYSTEM_WRITECOMBINE = 2,
378 	KFD_MEMPOOL_FRAMEBUFFER = 3,
379 };
380 
381 /* Character device interface */
382 int kfd_chardev_init(void);
383 void kfd_chardev_exit(void);
384 
385 /**
386  * enum kfd_unmap_queues_filter - Enum for queue filters.
387  *
388  * @KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES: Preempts all queues in the
389  *						running queues list.
390  *
391  * @KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES: Preempts all non-static queues
392  *						in the run list.
393  *
394  * @KFD_UNMAP_QUEUES_FILTER_BY_PASID: Preempts queues that belongs to
395  *						specific process.
396  *
397  */
398 enum kfd_unmap_queues_filter {
399 	KFD_UNMAP_QUEUES_FILTER_ALL_QUEUES = 1,
400 	KFD_UNMAP_QUEUES_FILTER_DYNAMIC_QUEUES = 2,
401 	KFD_UNMAP_QUEUES_FILTER_BY_PASID = 3
402 };
403 
404 /**
405  * enum kfd_queue_type - Enum for various queue types.
406  *
407  * @KFD_QUEUE_TYPE_COMPUTE: Regular user mode queue type.
408  *
409  * @KFD_QUEUE_TYPE_SDMA: SDMA user mode queue type.
410  *
411  * @KFD_QUEUE_TYPE_HIQ: HIQ queue type.
412  *
413  * @KFD_QUEUE_TYPE_DIQ: DIQ queue type.
414  *
415  * @KFD_QUEUE_TYPE_SDMA_XGMI: Special SDMA queue for XGMI interface.
416  */
417 enum kfd_queue_type  {
418 	KFD_QUEUE_TYPE_COMPUTE,
419 	KFD_QUEUE_TYPE_SDMA,
420 	KFD_QUEUE_TYPE_HIQ,
421 	KFD_QUEUE_TYPE_DIQ,
422 	KFD_QUEUE_TYPE_SDMA_XGMI
423 };
424 
425 enum kfd_queue_format {
426 	KFD_QUEUE_FORMAT_PM4,
427 	KFD_QUEUE_FORMAT_AQL
428 };
429 
430 enum KFD_QUEUE_PRIORITY {
431 	KFD_QUEUE_PRIORITY_MINIMUM = 0,
432 	KFD_QUEUE_PRIORITY_MAXIMUM = 15
433 };
434 
435 /**
436  * struct queue_properties
437  *
438  * @type: The queue type.
439  *
440  * @queue_id: Queue identifier.
441  *
442  * @queue_address: Queue ring buffer address.
443  *
444  * @queue_size: Queue ring buffer size.
445  *
446  * @priority: Defines the queue priority relative to other queues in the
447  * process.
448  * This is just an indication and HW scheduling may override the priority as
449  * necessary while keeping the relative prioritization.
450  * the priority granularity is from 0 to f which f is the highest priority.
451  * currently all queues are initialized with the highest priority.
452  *
453  * @queue_percent: This field is partially implemented and currently a zero in
454  * this field defines that the queue is non active.
455  *
456  * @read_ptr: User space address which points to the number of dwords the
457  * cp read from the ring buffer. This field updates automatically by the H/W.
458  *
459  * @write_ptr: Defines the number of dwords written to the ring buffer.
460  *
461  * @doorbell_ptr: Notifies the H/W of new packet written to the queue ring
462  * buffer. This field should be similar to write_ptr and the user should
463  * update this field after updating the write_ptr.
464  *
465  * @doorbell_off: The doorbell offset in the doorbell pci-bar.
466  *
467  * @is_interop: Defines if this is a interop queue. Interop queue means that
468  * the queue can access both graphics and compute resources.
469  *
470  * @is_evicted: Defines if the queue is evicted. Only active queues
471  * are evicted, rendering them inactive.
472  *
473  * @is_active: Defines if the queue is active or not. @is_active and
474  * @is_evicted are protected by the DQM lock.
475  *
476  * @is_gws: Defines if the queue has been updated to be GWS-capable or not.
477  * @is_gws should be protected by the DQM lock, since changing it can yield the
478  * possibility of updating DQM state on number of GWS queues.
479  *
480  * @vmid: If the scheduling mode is no cp scheduling the field defines the vmid
481  * of the queue.
482  *
483  * This structure represents the queue properties for each queue no matter if
484  * it's user mode or kernel mode queue.
485  *
486  */
487 
488 struct queue_properties {
489 	enum kfd_queue_type type;
490 	enum kfd_queue_format format;
491 	unsigned int queue_id;
492 	uint64_t queue_address;
493 	uint64_t  queue_size;
494 	uint32_t priority;
495 	uint32_t queue_percent;
496 	uint32_t *read_ptr;
497 	uint32_t *write_ptr;
498 	void __iomem *doorbell_ptr;
499 	uint32_t doorbell_off;
500 	bool is_interop;
501 	bool is_evicted;
502 	bool is_suspended;
503 	bool is_being_destroyed;
504 	bool is_active;
505 	bool is_gws;
506 	uint32_t pm4_target_xcc;
507 	bool is_dbg_wa;
508 	bool is_user_cu_masked;
509 	/* Not relevant for user mode queues in cp scheduling */
510 	unsigned int vmid;
511 	/* Relevant only for sdma queues*/
512 	uint32_t sdma_engine_id;
513 	uint32_t sdma_queue_id;
514 	uint32_t sdma_vm_addr;
515 	/* Relevant only for VI */
516 	uint64_t eop_ring_buffer_address;
517 	uint32_t eop_ring_buffer_size;
518 	uint64_t ctx_save_restore_area_address;
519 	uint32_t ctx_save_restore_area_size;
520 	uint32_t ctl_stack_size;
521 	uint64_t tba_addr;
522 	uint64_t tma_addr;
523 	uint64_t exception_status;
524 };
525 
526 #define QUEUE_IS_ACTIVE(q) ((q).queue_size > 0 &&	\
527 			    (q).queue_address != 0 &&	\
528 			    (q).queue_percent > 0 &&	\
529 			    !(q).is_evicted &&		\
530 			    !(q).is_suspended)
531 
532 enum mqd_update_flag {
533 	UPDATE_FLAG_DBG_WA_ENABLE = 1,
534 	UPDATE_FLAG_DBG_WA_DISABLE = 2,
535 };
536 
537 struct mqd_update_info {
538 	union {
539 		struct {
540 			uint32_t count; /* Must be a multiple of 32 */
541 			uint32_t *ptr;
542 		} cu_mask;
543 	};
544 	enum mqd_update_flag update_flag;
545 };
546 
547 /**
548  * struct queue
549  *
550  * @list: Queue linked list.
551  *
552  * @mqd: The queue MQD (memory queue descriptor).
553  *
554  * @mqd_mem_obj: The MQD local gpu memory object.
555  *
556  * @gart_mqd_addr: The MQD gart mc address.
557  *
558  * @properties: The queue properties.
559  *
560  * @mec: Used only in no cp scheduling mode and identifies to micro engine id
561  *	 that the queue should be executed on.
562  *
563  * @pipe: Used only in no cp scheduling mode and identifies the queue's pipe
564  *	  id.
565  *
566  * @queue: Used only in no cp scheduliong mode and identifies the queue's slot.
567  *
568  * @process: The kfd process that created this queue.
569  *
570  * @device: The kfd device that created this queue.
571  *
572  * @gws: Pointing to gws kgd_mem if this is a gws control queue; NULL
573  * otherwise.
574  *
575  * This structure represents user mode compute queues.
576  * It contains all the necessary data to handle such queues.
577  *
578  */
579 
580 struct queue {
581 	struct list_head list;
582 	void *mqd;
583 	struct kfd_mem_obj *mqd_mem_obj;
584 	uint64_t gart_mqd_addr;
585 	struct queue_properties properties;
586 
587 	uint32_t mec;
588 	uint32_t pipe;
589 	uint32_t queue;
590 
591 	unsigned int sdma_id;
592 	unsigned int doorbell_id;
593 
594 	struct kfd_process	*process;
595 	struct kfd_node		*device;
596 	void *gws;
597 
598 	/* procfs */
599 	struct kobject kobj;
600 
601 	void *gang_ctx_bo;
602 	uint64_t gang_ctx_gpu_addr;
603 	void *gang_ctx_cpu_ptr;
604 
605 	struct amdgpu_bo *wptr_bo;
606 };
607 
608 enum KFD_MQD_TYPE {
609 	KFD_MQD_TYPE_HIQ = 0,		/* for hiq */
610 	KFD_MQD_TYPE_CP,		/* for cp queues and diq */
611 	KFD_MQD_TYPE_SDMA,		/* for sdma queues */
612 	KFD_MQD_TYPE_DIQ,		/* for diq */
613 	KFD_MQD_TYPE_MAX
614 };
615 
616 enum KFD_PIPE_PRIORITY {
617 	KFD_PIPE_PRIORITY_CS_LOW = 0,
618 	KFD_PIPE_PRIORITY_CS_MEDIUM,
619 	KFD_PIPE_PRIORITY_CS_HIGH
620 };
621 
622 struct scheduling_resources {
623 	unsigned int vmid_mask;
624 	enum kfd_queue_type type;
625 	uint64_t queue_mask;
626 	uint64_t gws_mask;
627 	uint32_t oac_mask;
628 	uint32_t gds_heap_base;
629 	uint32_t gds_heap_size;
630 };
631 
632 struct process_queue_manager {
633 	/* data */
634 	struct kfd_process	*process;
635 	struct list_head	queues;
636 	unsigned long		*queue_slot_bitmap;
637 };
638 
639 struct qcm_process_device {
640 	/* The Device Queue Manager that owns this data */
641 	struct device_queue_manager *dqm;
642 	struct process_queue_manager *pqm;
643 	/* Queues list */
644 	struct list_head queues_list;
645 	struct list_head priv_queue_list;
646 
647 	unsigned int queue_count;
648 	unsigned int vmid;
649 	bool is_debug;
650 	unsigned int evicted; /* eviction counter, 0=active */
651 
652 	/* This flag tells if we should reset all wavefronts on
653 	 * process termination
654 	 */
655 	bool reset_wavefronts;
656 
657 	/* This flag tells us if this process has a GWS-capable
658 	 * queue that will be mapped into the runlist. It's
659 	 * possible to request a GWS BO, but not have the queue
660 	 * currently mapped, and this changes how the MAP_PROCESS
661 	 * PM4 packet is configured.
662 	 */
663 	bool mapped_gws_queue;
664 
665 	/* All the memory management data should be here too */
666 	uint64_t gds_context_area;
667 	/* Contains page table flags such as AMDGPU_PTE_VALID since gfx9 */
668 	uint64_t page_table_base;
669 	uint32_t sh_mem_config;
670 	uint32_t sh_mem_bases;
671 	uint32_t sh_mem_ape1_base;
672 	uint32_t sh_mem_ape1_limit;
673 	uint32_t gds_size;
674 	uint32_t num_gws;
675 	uint32_t num_oac;
676 	uint32_t sh_hidden_private_base;
677 
678 	/* CWSR memory */
679 	struct kgd_mem *cwsr_mem;
680 	void *cwsr_kaddr;
681 	uint64_t cwsr_base;
682 	uint64_t tba_addr;
683 	uint64_t tma_addr;
684 
685 	/* IB memory */
686 	struct kgd_mem *ib_mem;
687 	uint64_t ib_base;
688 	void *ib_kaddr;
689 
690 	/* doorbells for kfd process */
691 	struct amdgpu_bo *proc_doorbells;
692 
693 	/* bitmap for dynamic doorbell allocation from the bo */
694 	unsigned long *doorbell_bitmap;
695 };
696 
697 /* KFD Memory Eviction */
698 
699 /* Approx. wait time before attempting to restore evicted BOs */
700 #define PROCESS_RESTORE_TIME_MS 100
701 /* Approx. back off time if restore fails due to lack of memory */
702 #define PROCESS_BACK_OFF_TIME_MS 100
703 /* Approx. time before evicting the process again */
704 #define PROCESS_ACTIVE_TIME_MS 10
705 
706 /* 8 byte handle containing GPU ID in the most significant 4 bytes and
707  * idr_handle in the least significant 4 bytes
708  */
709 #define MAKE_HANDLE(gpu_id, idr_handle) \
710 	(((uint64_t)(gpu_id) << 32) + idr_handle)
711 #define GET_GPU_ID(handle) (handle >> 32)
712 #define GET_IDR_HANDLE(handle) (handle & 0xFFFFFFFF)
713 
714 enum kfd_pdd_bound {
715 	PDD_UNBOUND = 0,
716 	PDD_BOUND,
717 	PDD_BOUND_SUSPENDED,
718 };
719 
720 #define MAX_SYSFS_FILENAME_LEN 15
721 
722 /*
723  * SDMA counter runs at 100MHz frequency.
724  * We display SDMA activity in microsecond granularity in sysfs.
725  * As a result, the divisor is 100.
726  */
727 #define SDMA_ACTIVITY_DIVISOR  100
728 
729 /* Data that is per-process-per device. */
730 struct kfd_process_device {
731 	/* The device that owns this data. */
732 	struct kfd_node *dev;
733 
734 	/* The process that owns this kfd_process_device. */
735 	struct kfd_process *process;
736 
737 	/* per-process-per device QCM data structure */
738 	struct qcm_process_device qpd;
739 
740 	/*Apertures*/
741 	uint64_t lds_base;
742 	uint64_t lds_limit;
743 	uint64_t gpuvm_base;
744 	uint64_t gpuvm_limit;
745 	uint64_t scratch_base;
746 	uint64_t scratch_limit;
747 
748 	/* VM context for GPUVM allocations */
749 	struct file *drm_file;
750 	void *drm_priv;
751 	atomic64_t tlb_seq;
752 
753 	/* GPUVM allocations storage */
754 	struct idr alloc_idr;
755 
756 	/* Flag used to tell the pdd has dequeued from the dqm.
757 	 * This is used to prevent dev->dqm->ops.process_termination() from
758 	 * being called twice when it is already called in IOMMU callback
759 	 * function.
760 	 */
761 	bool already_dequeued;
762 	bool runtime_inuse;
763 
764 	/* Is this process/pasid bound to this device? (amd_iommu_bind_pasid) */
765 	enum kfd_pdd_bound bound;
766 
767 	/* VRAM usage */
768 	uint64_t vram_usage;
769 	struct attribute attr_vram;
770 	char vram_filename[MAX_SYSFS_FILENAME_LEN];
771 
772 	/* SDMA activity tracking */
773 	uint64_t sdma_past_activity_counter;
774 	struct attribute attr_sdma;
775 	char sdma_filename[MAX_SYSFS_FILENAME_LEN];
776 
777 	/* Eviction activity tracking */
778 	uint64_t last_evict_timestamp;
779 	atomic64_t evict_duration_counter;
780 	struct attribute attr_evict;
781 
782 	struct kobject *kobj_stats;
783 
784 	/*
785 	 * @cu_occupancy: Reports occupancy of Compute Units (CU) of a process
786 	 * that is associated with device encoded by "this" struct instance. The
787 	 * value reflects CU usage by all of the waves launched by this process
788 	 * on this device. A very important property of occupancy parameter is
789 	 * that its value is a snapshot of current use.
790 	 *
791 	 * Following is to be noted regarding how this parameter is reported:
792 	 *
793 	 *  The number of waves that a CU can launch is limited by couple of
794 	 *  parameters. These are encoded by struct amdgpu_cu_info instance
795 	 *  that is part of every device definition. For GFX9 devices this
796 	 *  translates to 40 waves (simd_per_cu * max_waves_per_simd) when waves
797 	 *  do not use scratch memory and 32 waves (max_scratch_slots_per_cu)
798 	 *  when they do use scratch memory. This could change for future
799 	 *  devices and therefore this example should be considered as a guide.
800 	 *
801 	 *  All CU's of a device are available for the process. This may not be true
802 	 *  under certain conditions - e.g. CU masking.
803 	 *
804 	 *  Finally number of CU's that are occupied by a process is affected by both
805 	 *  number of CU's a device has along with number of other competing processes
806 	 */
807 	struct attribute attr_cu_occupancy;
808 
809 	/* sysfs counters for GPU retry fault and page migration tracking */
810 	struct kobject *kobj_counters;
811 	struct attribute attr_faults;
812 	struct attribute attr_page_in;
813 	struct attribute attr_page_out;
814 	uint64_t faults;
815 	uint64_t page_in;
816 	uint64_t page_out;
817 
818 	/* Exception code status*/
819 	uint64_t exception_status;
820 	void *vm_fault_exc_data;
821 	size_t vm_fault_exc_data_size;
822 
823 	/* Tracks debug per-vmid request settings */
824 	uint32_t spi_dbg_override;
825 	uint32_t spi_dbg_launch_mode;
826 	uint32_t watch_points[4];
827 	uint32_t alloc_watch_ids;
828 
829 	/*
830 	 * If this process has been checkpointed before, then the user
831 	 * application will use the original gpu_id on the
832 	 * checkpointed node to refer to this device.
833 	 */
834 	uint32_t user_gpu_id;
835 
836 	void *proc_ctx_bo;
837 	uint64_t proc_ctx_gpu_addr;
838 	void *proc_ctx_cpu_ptr;
839 };
840 
841 #define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd)
842 
843 struct svm_range_list {
844 	struct mutex			lock;
845 	struct rb_root_cached		objects;
846 	struct list_head		list;
847 	struct work_struct		deferred_list_work;
848 	struct list_head		deferred_range_list;
849 	struct list_head                criu_svm_metadata_list;
850 	spinlock_t			deferred_list_lock;
851 	atomic_t			evicted_ranges;
852 	atomic_t			drain_pagefaults;
853 	struct delayed_work		restore_work;
854 	DECLARE_BITMAP(bitmap_supported, MAX_GPU_INSTANCE);
855 	struct task_struct		*faulting_task;
856 };
857 
858 /* Process data */
859 struct kfd_process {
860 	/*
861 	 * kfd_process are stored in an mm_struct*->kfd_process*
862 	 * hash table (kfd_processes in kfd_process.c)
863 	 */
864 	struct hlist_node kfd_processes;
865 
866 	/*
867 	 * Opaque pointer to mm_struct. We don't hold a reference to
868 	 * it so it should never be dereferenced from here. This is
869 	 * only used for looking up processes by their mm.
870 	 */
871 	void *mm;
872 
873 	struct kref ref;
874 	struct work_struct release_work;
875 
876 	struct mutex mutex;
877 
878 	/*
879 	 * In any process, the thread that started main() is the lead
880 	 * thread and outlives the rest.
881 	 * It is here because amd_iommu_bind_pasid wants a task_struct.
882 	 * It can also be used for safely getting a reference to the
883 	 * mm_struct of the process.
884 	 */
885 	struct task_struct *lead_thread;
886 
887 	/* We want to receive a notification when the mm_struct is destroyed */
888 	struct mmu_notifier mmu_notifier;
889 
890 	u32 pasid;
891 
892 	/*
893 	 * Array of kfd_process_device pointers,
894 	 * one for each device the process is using.
895 	 */
896 	struct kfd_process_device *pdds[MAX_GPU_INSTANCE];
897 	uint32_t n_pdds;
898 
899 	struct process_queue_manager pqm;
900 
901 	/*Is the user space process 32 bit?*/
902 	bool is_32bit_user_mode;
903 
904 	/* Event-related data */
905 	struct mutex event_mutex;
906 	/* Event ID allocator and lookup */
907 	struct idr event_idr;
908 	/* Event page */
909 	u64 signal_handle;
910 	struct kfd_signal_page *signal_page;
911 	size_t signal_mapped_size;
912 	size_t signal_event_count;
913 	bool signal_event_limit_reached;
914 
915 	/* Information used for memory eviction */
916 	void *kgd_process_info;
917 	/* Eviction fence that is attached to all the BOs of this process. The
918 	 * fence will be triggered during eviction and new one will be created
919 	 * during restore
920 	 */
921 	struct dma_fence *ef;
922 
923 	/* Work items for evicting and restoring BOs */
924 	struct delayed_work eviction_work;
925 	struct delayed_work restore_work;
926 	/* seqno of the last scheduled eviction */
927 	unsigned int last_eviction_seqno;
928 	/* Approx. the last timestamp (in jiffies) when the process was
929 	 * restored after an eviction
930 	 */
931 	unsigned long last_restore_timestamp;
932 
933 	/* Indicates device process is debug attached with reserved vmid. */
934 	bool debug_trap_enabled;
935 
936 	/* per-process-per device debug event fd file */
937 	struct file *dbg_ev_file;
938 
939 	/* If the process is a kfd debugger, we need to know so we can clean
940 	 * up at exit time.  If a process enables debugging on itself, it does
941 	 * its own clean-up, so we don't set the flag here.  We track this by
942 	 * counting the number of processes this process is debugging.
943 	 */
944 	atomic_t debugged_process_count;
945 
946 	/* If the process is a debugged, this is the debugger process */
947 	struct kfd_process *debugger_process;
948 
949 	/* Kobj for our procfs */
950 	struct kobject *kobj;
951 	struct kobject *kobj_queues;
952 	struct attribute attr_pasid;
953 
954 	/* Keep track cwsr init */
955 	bool has_cwsr;
956 
957 	/* Exception code enable mask and status */
958 	uint64_t exception_enable_mask;
959 	uint64_t exception_status;
960 
961 	/* Used to drain stale interrupts */
962 	wait_queue_head_t wait_irq_drain;
963 	bool irq_drain_is_open;
964 
965 	/* shared virtual memory registered by this process */
966 	struct svm_range_list svms;
967 
968 	bool xnack_enabled;
969 
970 	/* Work area for debugger event writer worker. */
971 	struct work_struct debug_event_workarea;
972 
973 	/* Tracks debug per-vmid request for debug flags */
974 	u32 dbg_flags;
975 
976 	atomic_t poison;
977 	/* Queues are in paused stated because we are in the process of doing a CRIU checkpoint */
978 	bool queues_paused;
979 
980 	/* Tracks runtime enable status */
981 	struct semaphore runtime_enable_sema;
982 	bool is_runtime_retry;
983 	struct kfd_runtime_info runtime_info;
984 };
985 
986 #define KFD_PROCESS_TABLE_SIZE 5 /* bits: 32 entries */
987 extern DECLARE_HASHTABLE(kfd_processes_table, KFD_PROCESS_TABLE_SIZE);
988 extern struct srcu_struct kfd_processes_srcu;
989 
990 /**
991  * typedef amdkfd_ioctl_t - typedef for ioctl function pointer.
992  *
993  * @filep: pointer to file structure.
994  * @p: amdkfd process pointer.
995  * @data: pointer to arg that was copied from user.
996  *
997  * Return: returns ioctl completion code.
998  */
999 typedef int amdkfd_ioctl_t(struct file *filep, struct kfd_process *p,
1000 				void *data);
1001 
1002 struct amdkfd_ioctl_desc {
1003 	unsigned int cmd;
1004 	int flags;
1005 	amdkfd_ioctl_t *func;
1006 	unsigned int cmd_drv;
1007 	const char *name;
1008 };
1009 bool kfd_dev_is_large_bar(struct kfd_node *dev);
1010 
1011 int kfd_process_create_wq(void);
1012 void kfd_process_destroy_wq(void);
1013 void kfd_cleanup_processes(void);
1014 struct kfd_process *kfd_create_process(struct task_struct *thread);
1015 struct kfd_process *kfd_get_process(const struct task_struct *task);
1016 struct kfd_process *kfd_lookup_process_by_pasid(u32 pasid);
1017 struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm);
1018 
1019 int kfd_process_gpuidx_from_gpuid(struct kfd_process *p, uint32_t gpu_id);
1020 int kfd_process_gpuid_from_node(struct kfd_process *p, struct kfd_node *node,
1021 				uint32_t *gpuid, uint32_t *gpuidx);
kfd_process_gpuid_from_gpuidx(struct kfd_process * p,uint32_t gpuidx,uint32_t * gpuid)1022 static inline int kfd_process_gpuid_from_gpuidx(struct kfd_process *p,
1023 				uint32_t gpuidx, uint32_t *gpuid) {
1024 	return gpuidx < p->n_pdds ? p->pdds[gpuidx]->dev->id : -EINVAL;
1025 }
kfd_process_device_from_gpuidx(struct kfd_process * p,uint32_t gpuidx)1026 static inline struct kfd_process_device *kfd_process_device_from_gpuidx(
1027 				struct kfd_process *p, uint32_t gpuidx) {
1028 	return gpuidx < p->n_pdds ? p->pdds[gpuidx] : NULL;
1029 }
1030 
1031 void kfd_unref_process(struct kfd_process *p);
1032 int kfd_process_evict_queues(struct kfd_process *p, uint32_t trigger);
1033 int kfd_process_restore_queues(struct kfd_process *p);
1034 void kfd_suspend_all_processes(void);
1035 int kfd_resume_all_processes(void);
1036 
1037 struct kfd_process_device *kfd_process_device_data_by_id(struct kfd_process *process,
1038 							 uint32_t gpu_id);
1039 
1040 int kfd_process_get_user_gpu_id(struct kfd_process *p, uint32_t actual_gpu_id);
1041 
1042 int kfd_process_device_init_vm(struct kfd_process_device *pdd,
1043 			       struct file *drm_file);
1044 struct kfd_process_device *kfd_bind_process_to_device(struct kfd_node *dev,
1045 						struct kfd_process *p);
1046 struct kfd_process_device *kfd_get_process_device_data(struct kfd_node *dev,
1047 							struct kfd_process *p);
1048 struct kfd_process_device *kfd_create_process_device_data(struct kfd_node *dev,
1049 							struct kfd_process *p);
1050 
1051 bool kfd_process_xnack_mode(struct kfd_process *p, bool supported);
1052 
1053 int kfd_reserved_mem_mmap(struct kfd_node *dev, struct kfd_process *process,
1054 			  struct vm_area_struct *vma);
1055 
1056 /* KFD process API for creating and translating handles */
1057 int kfd_process_device_create_obj_handle(struct kfd_process_device *pdd,
1058 					void *mem);
1059 void *kfd_process_device_translate_handle(struct kfd_process_device *p,
1060 					int handle);
1061 void kfd_process_device_remove_obj_handle(struct kfd_process_device *pdd,
1062 					int handle);
1063 struct kfd_process *kfd_lookup_process_by_pid(struct pid *pid);
1064 
1065 /* PASIDs */
1066 int kfd_pasid_init(void);
1067 void kfd_pasid_exit(void);
1068 bool kfd_set_pasid_limit(unsigned int new_limit);
1069 unsigned int kfd_get_pasid_limit(void);
1070 u32 kfd_pasid_alloc(void);
1071 void kfd_pasid_free(u32 pasid);
1072 
1073 /* Doorbells */
1074 size_t kfd_doorbell_process_slice(struct kfd_dev *kfd);
1075 int kfd_doorbell_init(struct kfd_dev *kfd);
1076 void kfd_doorbell_fini(struct kfd_dev *kfd);
1077 int kfd_doorbell_mmap(struct kfd_node *dev, struct kfd_process *process,
1078 		      struct vm_area_struct *vma);
1079 void __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd,
1080 					unsigned int *doorbell_off);
1081 void kfd_release_kernel_doorbell(struct kfd_dev *kfd, u32 __iomem *db_addr);
1082 u32 read_kernel_doorbell(u32 __iomem *db);
1083 void write_kernel_doorbell(void __iomem *db, u32 value);
1084 void write_kernel_doorbell64(void __iomem *db, u64 value);
1085 unsigned int kfd_get_doorbell_dw_offset_in_bar(struct kfd_dev *kfd,
1086 					struct kfd_process_device *pdd,
1087 					unsigned int doorbell_id);
1088 phys_addr_t kfd_get_process_doorbells(struct kfd_process_device *pdd);
1089 int kfd_alloc_process_doorbells(struct kfd_dev *kfd,
1090 				struct kfd_process_device *pdd);
1091 void kfd_free_process_doorbells(struct kfd_dev *kfd,
1092 				struct kfd_process_device *pdd);
1093 /* GTT Sub-Allocator */
1094 
1095 int kfd_gtt_sa_allocate(struct kfd_node *node, unsigned int size,
1096 			struct kfd_mem_obj **mem_obj);
1097 
1098 int kfd_gtt_sa_free(struct kfd_node *node, struct kfd_mem_obj *mem_obj);
1099 
1100 extern struct device *kfd_device;
1101 
1102 /* KFD's procfs */
1103 void kfd_procfs_init(void);
1104 void kfd_procfs_shutdown(void);
1105 int kfd_procfs_add_queue(struct queue *q);
1106 void kfd_procfs_del_queue(struct queue *q);
1107 
1108 /* Topology */
1109 int kfd_topology_init(void);
1110 void kfd_topology_shutdown(void);
1111 int kfd_topology_add_device(struct kfd_node *gpu);
1112 int kfd_topology_remove_device(struct kfd_node *gpu);
1113 struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
1114 						uint32_t proximity_domain);
1115 struct kfd_topology_device *kfd_topology_device_by_proximity_domain_no_lock(
1116 						uint32_t proximity_domain);
1117 struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id);
1118 struct kfd_node *kfd_device_by_id(uint32_t gpu_id);
1119 struct kfd_node *kfd_device_by_pci_dev(const struct pci_dev *pdev);
kfd_irq_is_from_node(struct kfd_node * node,uint32_t node_id,uint32_t vmid)1120 static inline bool kfd_irq_is_from_node(struct kfd_node *node, uint32_t node_id,
1121 					uint32_t vmid)
1122 {
1123 	return (node->interrupt_bitmap & (1 << node_id)) != 0 &&
1124 	       (node->compute_vmid_bitmap & (1 << vmid)) != 0;
1125 }
kfd_node_by_irq_ids(struct amdgpu_device * adev,uint32_t node_id,uint32_t vmid)1126 static inline struct kfd_node *kfd_node_by_irq_ids(struct amdgpu_device *adev,
1127 					uint32_t node_id, uint32_t vmid) {
1128 	struct kfd_dev *dev = adev->kfd.dev;
1129 	uint32_t i;
1130 
1131 	if (KFD_GC_VERSION(dev) != IP_VERSION(9, 4, 3))
1132 		return dev->nodes[0];
1133 
1134 	for (i = 0; i < dev->num_nodes; i++)
1135 		if (kfd_irq_is_from_node(dev->nodes[i], node_id, vmid))
1136 			return dev->nodes[i];
1137 
1138 	return NULL;
1139 }
1140 int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_node **kdev);
1141 int kfd_numa_node_to_apic_id(int numa_node_id);
1142 
1143 /* Interrupts */
1144 #define	KFD_IRQ_FENCE_CLIENTID	0xff
1145 #define	KFD_IRQ_FENCE_SOURCEID	0xff
1146 #define	KFD_IRQ_IS_FENCE(client, source)				\
1147 				((client) == KFD_IRQ_FENCE_CLIENTID &&	\
1148 				(source) == KFD_IRQ_FENCE_SOURCEID)
1149 int kfd_interrupt_init(struct kfd_node *dev);
1150 void kfd_interrupt_exit(struct kfd_node *dev);
1151 bool enqueue_ih_ring_entry(struct kfd_node *kfd, const void *ih_ring_entry);
1152 bool interrupt_is_wanted(struct kfd_node *dev,
1153 				const uint32_t *ih_ring_entry,
1154 				uint32_t *patched_ihre, bool *flag);
1155 int kfd_process_drain_interrupts(struct kfd_process_device *pdd);
1156 void kfd_process_close_interrupt_drain(unsigned int pasid);
1157 
1158 /* amdkfd Apertures */
1159 int kfd_init_apertures(struct kfd_process *process);
1160 
1161 void kfd_process_set_trap_handler(struct qcm_process_device *qpd,
1162 				  uint64_t tba_addr,
1163 				  uint64_t tma_addr);
1164 void kfd_process_set_trap_debug_flag(struct qcm_process_device *qpd,
1165 				     bool enabled);
1166 
1167 /* CWSR initialization */
1168 int kfd_process_init_cwsr_apu(struct kfd_process *process, struct file *filep);
1169 
1170 /* CRIU */
1171 /*
1172  * Need to increment KFD_CRIU_PRIV_VERSION each time a change is made to any of the CRIU private
1173  * structures:
1174  * kfd_criu_process_priv_data
1175  * kfd_criu_device_priv_data
1176  * kfd_criu_bo_priv_data
1177  * kfd_criu_queue_priv_data
1178  * kfd_criu_event_priv_data
1179  * kfd_criu_svm_range_priv_data
1180  */
1181 
1182 #define KFD_CRIU_PRIV_VERSION 1
1183 
1184 struct kfd_criu_process_priv_data {
1185 	uint32_t version;
1186 	uint32_t xnack_mode;
1187 };
1188 
1189 struct kfd_criu_device_priv_data {
1190 	/* For future use */
1191 	uint64_t reserved;
1192 };
1193 
1194 struct kfd_criu_bo_priv_data {
1195 	uint64_t user_addr;
1196 	uint32_t idr_handle;
1197 	uint32_t mapped_gpuids[MAX_GPU_INSTANCE];
1198 };
1199 
1200 /*
1201  * The first 4 bytes of kfd_criu_queue_priv_data, kfd_criu_event_priv_data,
1202  * kfd_criu_svm_range_priv_data is the object type
1203  */
1204 enum kfd_criu_object_type {
1205 	KFD_CRIU_OBJECT_TYPE_QUEUE,
1206 	KFD_CRIU_OBJECT_TYPE_EVENT,
1207 	KFD_CRIU_OBJECT_TYPE_SVM_RANGE,
1208 };
1209 
1210 struct kfd_criu_svm_range_priv_data {
1211 	uint32_t object_type;
1212 	uint64_t start_addr;
1213 	uint64_t size;
1214 	/* Variable length array of attributes */
1215 	struct kfd_ioctl_svm_attribute attrs[];
1216 };
1217 
1218 struct kfd_criu_queue_priv_data {
1219 	uint32_t object_type;
1220 	uint64_t q_address;
1221 	uint64_t q_size;
1222 	uint64_t read_ptr_addr;
1223 	uint64_t write_ptr_addr;
1224 	uint64_t doorbell_off;
1225 	uint64_t eop_ring_buffer_address;
1226 	uint64_t ctx_save_restore_area_address;
1227 	uint32_t gpu_id;
1228 	uint32_t type;
1229 	uint32_t format;
1230 	uint32_t q_id;
1231 	uint32_t priority;
1232 	uint32_t q_percent;
1233 	uint32_t doorbell_id;
1234 	uint32_t gws;
1235 	uint32_t sdma_id;
1236 	uint32_t eop_ring_buffer_size;
1237 	uint32_t ctx_save_restore_area_size;
1238 	uint32_t ctl_stack_size;
1239 	uint32_t mqd_size;
1240 };
1241 
1242 struct kfd_criu_event_priv_data {
1243 	uint32_t object_type;
1244 	uint64_t user_handle;
1245 	uint32_t event_id;
1246 	uint32_t auto_reset;
1247 	uint32_t type;
1248 	uint32_t signaled;
1249 
1250 	union {
1251 		struct kfd_hsa_memory_exception_data memory_exception_data;
1252 		struct kfd_hsa_hw_exception_data hw_exception_data;
1253 	};
1254 };
1255 
1256 int kfd_process_get_queue_info(struct kfd_process *p,
1257 			       uint32_t *num_queues,
1258 			       uint64_t *priv_data_sizes);
1259 
1260 int kfd_criu_checkpoint_queues(struct kfd_process *p,
1261 			 uint8_t __user *user_priv_data,
1262 			 uint64_t *priv_data_offset);
1263 
1264 int kfd_criu_restore_queue(struct kfd_process *p,
1265 			   uint8_t __user *user_priv_data,
1266 			   uint64_t *priv_data_offset,
1267 			   uint64_t max_priv_data_size);
1268 
1269 int kfd_criu_checkpoint_events(struct kfd_process *p,
1270 			 uint8_t __user *user_priv_data,
1271 			 uint64_t *priv_data_offset);
1272 
1273 int kfd_criu_restore_event(struct file *devkfd,
1274 			   struct kfd_process *p,
1275 			   uint8_t __user *user_priv_data,
1276 			   uint64_t *priv_data_offset,
1277 			   uint64_t max_priv_data_size);
1278 /* CRIU - End */
1279 
1280 /* Queue Context Management */
1281 int init_queue(struct queue **q, const struct queue_properties *properties);
1282 void uninit_queue(struct queue *q);
1283 void print_queue_properties(struct queue_properties *q);
1284 void print_queue(struct queue *q);
1285 
1286 struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
1287 		struct kfd_node *dev);
1288 struct mqd_manager *mqd_manager_init_vi(enum KFD_MQD_TYPE type,
1289 		struct kfd_node *dev);
1290 struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
1291 		struct kfd_node *dev);
1292 struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type,
1293 		struct kfd_node *dev);
1294 struct mqd_manager *mqd_manager_init_v11(enum KFD_MQD_TYPE type,
1295 		struct kfd_node *dev);
1296 struct device_queue_manager *device_queue_manager_init(struct kfd_node *dev);
1297 void device_queue_manager_uninit(struct device_queue_manager *dqm);
1298 struct kernel_queue *kernel_queue_init(struct kfd_node *dev,
1299 					enum kfd_queue_type type);
1300 void kernel_queue_uninit(struct kernel_queue *kq, bool hanging);
1301 int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid);
1302 
1303 /* Process Queue Manager */
1304 struct process_queue_node {
1305 	struct queue *q;
1306 	struct kernel_queue *kq;
1307 	struct list_head process_queue_list;
1308 };
1309 
1310 void kfd_process_dequeue_from_device(struct kfd_process_device *pdd);
1311 void kfd_process_dequeue_from_all_devices(struct kfd_process *p);
1312 int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p);
1313 void pqm_uninit(struct process_queue_manager *pqm);
1314 int pqm_create_queue(struct process_queue_manager *pqm,
1315 			    struct kfd_node *dev,
1316 			    struct file *f,
1317 			    struct queue_properties *properties,
1318 			    unsigned int *qid,
1319 			    struct amdgpu_bo *wptr_bo,
1320 			    const struct kfd_criu_queue_priv_data *q_data,
1321 			    const void *restore_mqd,
1322 			    const void *restore_ctl_stack,
1323 			    uint32_t *p_doorbell_offset_in_process);
1324 int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid);
1325 int pqm_update_queue_properties(struct process_queue_manager *pqm, unsigned int qid,
1326 			struct queue_properties *p);
1327 int pqm_update_mqd(struct process_queue_manager *pqm, unsigned int qid,
1328 			struct mqd_update_info *minfo);
1329 int pqm_set_gws(struct process_queue_manager *pqm, unsigned int qid,
1330 			void *gws);
1331 struct kernel_queue *pqm_get_kernel_queue(struct process_queue_manager *pqm,
1332 						unsigned int qid);
1333 struct queue *pqm_get_user_queue(struct process_queue_manager *pqm,
1334 						unsigned int qid);
1335 int pqm_get_wave_state(struct process_queue_manager *pqm,
1336 		       unsigned int qid,
1337 		       void __user *ctl_stack,
1338 		       u32 *ctl_stack_used_size,
1339 		       u32 *save_area_used_size);
1340 int pqm_get_queue_snapshot(struct process_queue_manager *pqm,
1341 			   uint64_t exception_clear_mask,
1342 			   void __user *buf,
1343 			   int *num_qss_entries,
1344 			   uint32_t *entry_size);
1345 
1346 int amdkfd_fence_wait_timeout(uint64_t *fence_addr,
1347 			      uint64_t fence_value,
1348 			      unsigned int timeout_ms);
1349 
1350 int pqm_get_queue_checkpoint_info(struct process_queue_manager *pqm,
1351 				  unsigned int qid,
1352 				  u32 *mqd_size,
1353 				  u32 *ctl_stack_size);
1354 /* Packet Manager */
1355 
1356 #define KFD_FENCE_COMPLETED (100)
1357 #define KFD_FENCE_INIT   (10)
1358 
1359 struct packet_manager {
1360 	struct device_queue_manager *dqm;
1361 	struct kernel_queue *priv_queue;
1362 	struct mutex lock;
1363 	bool allocated;
1364 	struct kfd_mem_obj *ib_buffer_obj;
1365 	unsigned int ib_size_bytes;
1366 	bool is_over_subscription;
1367 
1368 	const struct packet_manager_funcs *pmf;
1369 };
1370 
1371 struct packet_manager_funcs {
1372 	/* Support ASIC-specific packet formats for PM4 packets */
1373 	int (*map_process)(struct packet_manager *pm, uint32_t *buffer,
1374 			struct qcm_process_device *qpd);
1375 	int (*runlist)(struct packet_manager *pm, uint32_t *buffer,
1376 			uint64_t ib, size_t ib_size_in_dwords, bool chain);
1377 	int (*set_resources)(struct packet_manager *pm, uint32_t *buffer,
1378 			struct scheduling_resources *res);
1379 	int (*map_queues)(struct packet_manager *pm, uint32_t *buffer,
1380 			struct queue *q, bool is_static);
1381 	int (*unmap_queues)(struct packet_manager *pm, uint32_t *buffer,
1382 			enum kfd_unmap_queues_filter mode,
1383 			uint32_t filter_param, bool reset);
1384 	int (*set_grace_period)(struct packet_manager *pm, uint32_t *buffer,
1385 			uint32_t grace_period);
1386 	int (*query_status)(struct packet_manager *pm, uint32_t *buffer,
1387 			uint64_t fence_address,	uint64_t fence_value);
1388 	int (*release_mem)(uint64_t gpu_addr, uint32_t *buffer);
1389 
1390 	/* Packet sizes */
1391 	int map_process_size;
1392 	int runlist_size;
1393 	int set_resources_size;
1394 	int map_queues_size;
1395 	int unmap_queues_size;
1396 	int set_grace_period_size;
1397 	int query_status_size;
1398 	int release_mem_size;
1399 };
1400 
1401 extern const struct packet_manager_funcs kfd_vi_pm_funcs;
1402 extern const struct packet_manager_funcs kfd_v9_pm_funcs;
1403 extern const struct packet_manager_funcs kfd_aldebaran_pm_funcs;
1404 
1405 int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm);
1406 void pm_uninit(struct packet_manager *pm, bool hanging);
1407 int pm_send_set_resources(struct packet_manager *pm,
1408 				struct scheduling_resources *res);
1409 int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues);
1410 int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
1411 				uint64_t fence_value);
1412 
1413 int pm_send_unmap_queue(struct packet_manager *pm,
1414 			enum kfd_unmap_queues_filter mode,
1415 			uint32_t filter_param, bool reset);
1416 
1417 void pm_release_ib(struct packet_manager *pm);
1418 
1419 int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period);
1420 
1421 /* Following PM funcs can be shared among VI and AI */
1422 unsigned int pm_build_pm4_header(unsigned int opcode, size_t packet_size);
1423 
1424 uint64_t kfd_get_number_elems(struct kfd_dev *kfd);
1425 
1426 /* Events */
1427 extern const struct kfd_event_interrupt_class event_interrupt_class_cik;
1428 extern const struct kfd_event_interrupt_class event_interrupt_class_v9;
1429 extern const struct kfd_event_interrupt_class event_interrupt_class_v9_4_3;
1430 extern const struct kfd_event_interrupt_class event_interrupt_class_v10;
1431 extern const struct kfd_event_interrupt_class event_interrupt_class_v11;
1432 
1433 extern const struct kfd_device_global_init_class device_global_init_class_cik;
1434 
1435 int kfd_event_init_process(struct kfd_process *p);
1436 void kfd_event_free_process(struct kfd_process *p);
1437 int kfd_event_mmap(struct kfd_process *process, struct vm_area_struct *vma);
1438 int kfd_wait_on_events(struct kfd_process *p,
1439 		       uint32_t num_events, void __user *data,
1440 		       bool all, uint32_t *user_timeout_ms,
1441 		       uint32_t *wait_result);
1442 void kfd_signal_event_interrupt(u32 pasid, uint32_t partial_id,
1443 				uint32_t valid_id_bits);
1444 void kfd_signal_hw_exception_event(u32 pasid);
1445 int kfd_set_event(struct kfd_process *p, uint32_t event_id);
1446 int kfd_reset_event(struct kfd_process *p, uint32_t event_id);
1447 int kfd_kmap_event_page(struct kfd_process *p, uint64_t event_page_offset);
1448 
1449 int kfd_event_create(struct file *devkfd, struct kfd_process *p,
1450 		     uint32_t event_type, bool auto_reset, uint32_t node_id,
1451 		     uint32_t *event_id, uint32_t *event_trigger_data,
1452 		     uint64_t *event_page_offset, uint32_t *event_slot_index);
1453 
1454 int kfd_get_num_events(struct kfd_process *p);
1455 int kfd_event_destroy(struct kfd_process *p, uint32_t event_id);
1456 
1457 void kfd_signal_vm_fault_event(struct kfd_node *dev, u32 pasid,
1458 				struct kfd_vm_fault_info *info,
1459 				struct kfd_hsa_memory_exception_data *data);
1460 
1461 void kfd_signal_reset_event(struct kfd_node *dev);
1462 
1463 void kfd_signal_poison_consumed_event(struct kfd_node *dev, u32 pasid);
1464 
1465 void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type);
1466 
kfd_flush_tlb_after_unmap(struct kfd_dev * dev)1467 static inline bool kfd_flush_tlb_after_unmap(struct kfd_dev *dev)
1468 {
1469 	return KFD_GC_VERSION(dev) > IP_VERSION(9, 4, 2) ||
1470 	       (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 1) && dev->sdma_fw_version >= 18) ||
1471 	       KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 0);
1472 }
1473 
1474 int kfd_send_exception_to_runtime(struct kfd_process *p,
1475 				unsigned int queue_id,
1476 				uint64_t error_reason);
1477 bool kfd_is_locked(void);
1478 
1479 /* Compute profile */
1480 void kfd_inc_compute_active(struct kfd_node *dev);
1481 void kfd_dec_compute_active(struct kfd_node *dev);
1482 
1483 /* Cgroup Support */
1484 /* Check with device cgroup if @kfd device is accessible */
kfd_devcgroup_check_permission(struct kfd_node * node)1485 static inline int kfd_devcgroup_check_permission(struct kfd_node *node)
1486 {
1487 #if defined(CONFIG_CGROUP_DEVICE) || defined(CONFIG_CGROUP_BPF)
1488 	struct drm_device *ddev;
1489 
1490 	if (node->xcp)
1491 		ddev = node->xcp->ddev;
1492 	else
1493 		ddev = adev_to_drm(node->adev);
1494 
1495 	return devcgroup_check_permission(DEVCG_DEV_CHAR, DRM_MAJOR,
1496 					  ddev->render->index,
1497 					  DEVCG_ACC_WRITE | DEVCG_ACC_READ);
1498 #else
1499 	return 0;
1500 #endif
1501 }
1502 
kfd_is_first_node(struct kfd_node * node)1503 static inline bool kfd_is_first_node(struct kfd_node *node)
1504 {
1505 	return (node == node->kfd->nodes[0]);
1506 }
1507 
1508 /* Debugfs */
1509 #if defined(CONFIG_DEBUG_FS)
1510 
1511 void kfd_debugfs_init(void);
1512 void kfd_debugfs_fini(void);
1513 int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data);
1514 int pqm_debugfs_mqds(struct seq_file *m, void *data);
1515 int kfd_debugfs_hqds_by_device(struct seq_file *m, void *data);
1516 int dqm_debugfs_hqds(struct seq_file *m, void *data);
1517 int kfd_debugfs_rls_by_device(struct seq_file *m, void *data);
1518 int pm_debugfs_runlist(struct seq_file *m, void *data);
1519 
1520 int kfd_debugfs_hang_hws(struct kfd_node *dev);
1521 int pm_debugfs_hang_hws(struct packet_manager *pm);
1522 int dqm_debugfs_hang_hws(struct device_queue_manager *dqm);
1523 
1524 #else
1525 
kfd_debugfs_init(void)1526 static inline void kfd_debugfs_init(void) {}
kfd_debugfs_fini(void)1527 static inline void kfd_debugfs_fini(void) {}
1528 
1529 #endif
1530 
1531 #endif
1532