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 #include "amdgpu.h"
24 #include "amdgpu_amdkfd.h"
25 #include "cikd.h"
26 #include "cik_sdma.h"
27 #include "gfx_v7_0.h"
28 #include "gca/gfx_7_2_d.h"
29 #include "gca/gfx_7_2_enum.h"
30 #include "gca/gfx_7_2_sh_mask.h"
31 #include "oss/oss_2_0_d.h"
32 #include "oss/oss_2_0_sh_mask.h"
33 #include "gmc/gmc_7_1_d.h"
34 #include "gmc/gmc_7_1_sh_mask.h"
35 #include "cik_structs.h"
36 
37 enum hqd_dequeue_request_type {
38 	NO_ACTION = 0,
39 	DRAIN_PIPE,
40 	RESET_WAVES
41 };
42 
43 enum {
44 	MAX_TRAPID = 8,		/* 3 bits in the bitfield. */
45 	MAX_WATCH_ADDRESSES = 4
46 };
47 
48 static void lock_srbm(struct amdgpu_device *adev, uint32_t mec, uint32_t pipe,
49 			uint32_t queue, uint32_t vmid)
50 {
51 	uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
52 
53 	mutex_lock(&adev->srbm_mutex);
54 	WREG32(mmSRBM_GFX_CNTL, value);
55 }
56 
57 static void unlock_srbm(struct amdgpu_device *adev)
58 {
59 	WREG32(mmSRBM_GFX_CNTL, 0);
60 	mutex_unlock(&adev->srbm_mutex);
61 }
62 
63 static void acquire_queue(struct amdgpu_device *adev, uint32_t pipe_id,
64 				uint32_t queue_id)
65 {
66 	uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
67 	uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
68 
69 	lock_srbm(adev, mec, pipe, queue_id, 0);
70 }
71 
72 static void release_queue(struct amdgpu_device *adev)
73 {
74 	unlock_srbm(adev);
75 }
76 
77 static void kgd_program_sh_mem_settings(struct amdgpu_device *adev, uint32_t vmid,
78 					uint32_t sh_mem_config,
79 					uint32_t sh_mem_ape1_base,
80 					uint32_t sh_mem_ape1_limit,
81 					uint32_t sh_mem_bases)
82 {
83 	lock_srbm(adev, 0, 0, 0, vmid);
84 
85 	WREG32(mmSH_MEM_CONFIG, sh_mem_config);
86 	WREG32(mmSH_MEM_APE1_BASE, sh_mem_ape1_base);
87 	WREG32(mmSH_MEM_APE1_LIMIT, sh_mem_ape1_limit);
88 	WREG32(mmSH_MEM_BASES, sh_mem_bases);
89 
90 	unlock_srbm(adev);
91 }
92 
93 static int kgd_set_pasid_vmid_mapping(struct amdgpu_device *adev, u32 pasid,
94 					unsigned int vmid)
95 {
96 	/*
97 	 * We have to assume that there is no outstanding mapping.
98 	 * The ATC_VMID_PASID_MAPPING_UPDATE_STATUS bit could be 0 because
99 	 * a mapping is in progress or because a mapping finished and the
100 	 * SW cleared it. So the protocol is to always wait & clear.
101 	 */
102 	uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
103 			ATC_VMID0_PASID_MAPPING__VALID_MASK;
104 
105 	WREG32(mmATC_VMID0_PASID_MAPPING + vmid, pasid_mapping);
106 
107 	while (!(RREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS) & (1U << vmid)))
108 		cpu_relax();
109 	WREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS, 1U << vmid);
110 
111 	/* Mapping vmid to pasid also for IH block */
112 	WREG32(mmIH_VMID_0_LUT + vmid, pasid_mapping);
113 
114 	return 0;
115 }
116 
117 static int kgd_init_interrupts(struct amdgpu_device *adev, uint32_t pipe_id)
118 {
119 	uint32_t mec;
120 	uint32_t pipe;
121 
122 	mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
123 	pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
124 
125 	lock_srbm(adev, mec, pipe, 0, 0);
126 
127 	WREG32(mmCPC_INT_CNTL, CP_INT_CNTL_RING0__TIME_STAMP_INT_ENABLE_MASK |
128 			CP_INT_CNTL_RING0__OPCODE_ERROR_INT_ENABLE_MASK);
129 
130 	unlock_srbm(adev);
131 
132 	return 0;
133 }
134 
135 static inline uint32_t get_sdma_rlc_reg_offset(struct cik_sdma_rlc_registers *m)
136 {
137 	uint32_t retval;
138 
139 	retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET +
140 			m->sdma_queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
141 
142 	pr_debug("RLC register offset for SDMA%d RLC%d: 0x%x\n",
143 			m->sdma_engine_id, m->sdma_queue_id, retval);
144 
145 	return retval;
146 }
147 
148 static inline struct cik_mqd *get_mqd(void *mqd)
149 {
150 	return (struct cik_mqd *)mqd;
151 }
152 
153 static inline struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
154 {
155 	return (struct cik_sdma_rlc_registers *)mqd;
156 }
157 
158 static int kgd_hqd_load(struct amdgpu_device *adev, void *mqd,
159 			uint32_t pipe_id, uint32_t queue_id,
160 			uint32_t __user *wptr, uint32_t wptr_shift,
161 			uint32_t wptr_mask, struct mm_struct *mm)
162 {
163 	struct cik_mqd *m;
164 	uint32_t *mqd_hqd;
165 	uint32_t reg, wptr_val, data;
166 	bool valid_wptr = false;
167 
168 	m = get_mqd(mqd);
169 
170 	acquire_queue(adev, pipe_id, queue_id);
171 
172 	/* HQD registers extend from CP_MQD_BASE_ADDR to CP_MQD_CONTROL. */
173 	mqd_hqd = &m->cp_mqd_base_addr_lo;
174 
175 	for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_MQD_CONTROL; reg++)
176 		WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
177 
178 	/* Copy userspace write pointer value to register.
179 	 * Activate doorbell logic to monitor subsequent changes.
180 	 */
181 	data = REG_SET_FIELD(m->cp_hqd_pq_doorbell_control,
182 			     CP_HQD_PQ_DOORBELL_CONTROL, DOORBELL_EN, 1);
183 	WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, data);
184 
185 	/* read_user_ptr may take the mm->mmap_lock.
186 	 * release srbm_mutex to avoid circular dependency between
187 	 * srbm_mutex->mm_sem->reservation_ww_class_mutex->srbm_mutex.
188 	 */
189 	release_queue(adev);
190 	valid_wptr = read_user_wptr(mm, wptr, wptr_val);
191 	acquire_queue(adev, pipe_id, queue_id);
192 	if (valid_wptr)
193 		WREG32(mmCP_HQD_PQ_WPTR, (wptr_val << wptr_shift) & wptr_mask);
194 
195 	data = REG_SET_FIELD(m->cp_hqd_active, CP_HQD_ACTIVE, ACTIVE, 1);
196 	WREG32(mmCP_HQD_ACTIVE, data);
197 
198 	release_queue(adev);
199 
200 	return 0;
201 }
202 
203 static int kgd_hqd_dump(struct amdgpu_device *adev,
204 			uint32_t pipe_id, uint32_t queue_id,
205 			uint32_t (**dump)[2], uint32_t *n_regs)
206 {
207 	uint32_t i = 0, reg;
208 #define HQD_N_REGS (35+4)
209 #define DUMP_REG(addr) do {				\
210 		if (WARN_ON_ONCE(i >= HQD_N_REGS))	\
211 			break;				\
212 		(*dump)[i][0] = (addr) << 2;		\
213 		(*dump)[i++][1] = RREG32(addr);		\
214 	} while (0)
215 
216 	*dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
217 	if (*dump == NULL)
218 		return -ENOMEM;
219 
220 	acquire_queue(adev, pipe_id, queue_id);
221 
222 	DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE0);
223 	DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE1);
224 	DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE2);
225 	DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE3);
226 
227 	for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_MQD_CONTROL; reg++)
228 		DUMP_REG(reg);
229 
230 	release_queue(adev);
231 
232 	WARN_ON_ONCE(i != HQD_N_REGS);
233 	*n_regs = i;
234 
235 	return 0;
236 }
237 
238 static int kgd_hqd_sdma_load(struct amdgpu_device *adev, void *mqd,
239 			     uint32_t __user *wptr, struct mm_struct *mm)
240 {
241 	struct cik_sdma_rlc_registers *m;
242 	unsigned long end_jiffies;
243 	uint32_t sdma_rlc_reg_offset;
244 	uint32_t data;
245 
246 	m = get_sdma_mqd(mqd);
247 	sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
248 
249 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL,
250 		m->sdma_rlc_rb_cntl & (~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK));
251 
252 	end_jiffies = msecs_to_jiffies(2000) + jiffies;
253 	while (true) {
254 		data = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_CONTEXT_STATUS);
255 		if (data & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
256 			break;
257 		if (time_after(jiffies, end_jiffies)) {
258 			pr_err("SDMA RLC not idle in %s\n", __func__);
259 			return -ETIME;
260 		}
261 		usleep_range(500, 1000);
262 	}
263 
264 	data = REG_SET_FIELD(m->sdma_rlc_doorbell, SDMA0_RLC0_DOORBELL,
265 			     ENABLE, 1);
266 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_DOORBELL, data);
267 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR,
268 				m->sdma_rlc_rb_rptr);
269 
270 	if (read_user_wptr(mm, wptr, data))
271 		WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_WPTR, data);
272 	else
273 		WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_WPTR,
274 		       m->sdma_rlc_rb_rptr);
275 
276 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_VIRTUAL_ADDR,
277 				m->sdma_rlc_virtual_addr);
278 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_BASE, m->sdma_rlc_rb_base);
279 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_BASE_HI,
280 			m->sdma_rlc_rb_base_hi);
281 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR_ADDR_LO,
282 			m->sdma_rlc_rb_rptr_addr_lo);
283 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR_ADDR_HI,
284 			m->sdma_rlc_rb_rptr_addr_hi);
285 
286 	data = REG_SET_FIELD(m->sdma_rlc_rb_cntl, SDMA0_RLC0_RB_CNTL,
287 			     RB_ENABLE, 1);
288 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL, data);
289 
290 	return 0;
291 }
292 
293 static int kgd_hqd_sdma_dump(struct amdgpu_device *adev,
294 			     uint32_t engine_id, uint32_t queue_id,
295 			     uint32_t (**dump)[2], uint32_t *n_regs)
296 {
297 	uint32_t sdma_offset = engine_id * SDMA1_REGISTER_OFFSET +
298 		queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
299 	uint32_t i = 0, reg;
300 #undef HQD_N_REGS
301 #define HQD_N_REGS (19+4)
302 
303 	*dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
304 	if (*dump == NULL)
305 		return -ENOMEM;
306 
307 	for (reg = mmSDMA0_RLC0_RB_CNTL; reg <= mmSDMA0_RLC0_DOORBELL; reg++)
308 		DUMP_REG(sdma_offset + reg);
309 	for (reg = mmSDMA0_RLC0_VIRTUAL_ADDR; reg <= mmSDMA0_RLC0_WATERMARK;
310 	     reg++)
311 		DUMP_REG(sdma_offset + reg);
312 
313 	WARN_ON_ONCE(i != HQD_N_REGS);
314 	*n_regs = i;
315 
316 	return 0;
317 }
318 
319 static bool kgd_hqd_is_occupied(struct amdgpu_device *adev,
320 				uint64_t queue_address, uint32_t pipe_id,
321 				uint32_t queue_id)
322 {
323 	uint32_t act;
324 	bool retval = false;
325 	uint32_t low, high;
326 
327 	acquire_queue(adev, pipe_id, queue_id);
328 	act = RREG32(mmCP_HQD_ACTIVE);
329 	if (act) {
330 		low = lower_32_bits(queue_address >> 8);
331 		high = upper_32_bits(queue_address >> 8);
332 
333 		if (low == RREG32(mmCP_HQD_PQ_BASE) &&
334 				high == RREG32(mmCP_HQD_PQ_BASE_HI))
335 			retval = true;
336 	}
337 	release_queue(adev);
338 	return retval;
339 }
340 
341 static bool kgd_hqd_sdma_is_occupied(struct amdgpu_device *adev, void *mqd)
342 {
343 	struct cik_sdma_rlc_registers *m;
344 	uint32_t sdma_rlc_reg_offset;
345 	uint32_t sdma_rlc_rb_cntl;
346 
347 	m = get_sdma_mqd(mqd);
348 	sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
349 
350 	sdma_rlc_rb_cntl = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL);
351 
352 	if (sdma_rlc_rb_cntl & SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK)
353 		return true;
354 
355 	return false;
356 }
357 
358 static int kgd_hqd_destroy(struct amdgpu_device *adev, void *mqd,
359 				enum kfd_preempt_type reset_type,
360 				unsigned int utimeout, uint32_t pipe_id,
361 				uint32_t queue_id)
362 {
363 	uint32_t temp;
364 	enum hqd_dequeue_request_type type;
365 	unsigned long flags, end_jiffies;
366 	int retry;
367 
368 	if (amdgpu_in_reset(adev))
369 		return -EIO;
370 
371 	acquire_queue(adev, pipe_id, queue_id);
372 	WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, 0);
373 
374 	switch (reset_type) {
375 	case KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN:
376 		type = DRAIN_PIPE;
377 		break;
378 	case KFD_PREEMPT_TYPE_WAVEFRONT_RESET:
379 		type = RESET_WAVES;
380 		break;
381 	default:
382 		type = DRAIN_PIPE;
383 		break;
384 	}
385 
386 	/* Workaround: If IQ timer is active and the wait time is close to or
387 	 * equal to 0, dequeueing is not safe. Wait until either the wait time
388 	 * is larger or timer is cleared. Also, ensure that IQ_REQ_PEND is
389 	 * cleared before continuing. Also, ensure wait times are set to at
390 	 * least 0x3.
391 	 */
392 	local_irq_save(flags);
393 	preempt_disable();
394 	retry = 5000; /* wait for 500 usecs at maximum */
395 	while (true) {
396 		temp = RREG32(mmCP_HQD_IQ_TIMER);
397 		if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, PROCESSING_IQ)) {
398 			pr_debug("HW is processing IQ\n");
399 			goto loop;
400 		}
401 		if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, ACTIVE)) {
402 			if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, RETRY_TYPE)
403 					== 3) /* SEM-rearm is safe */
404 				break;
405 			/* Wait time 3 is safe for CP, but our MMIO read/write
406 			 * time is close to 1 microsecond, so check for 10 to
407 			 * leave more buffer room
408 			 */
409 			if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, WAIT_TIME)
410 					>= 10)
411 				break;
412 			pr_debug("IQ timer is active\n");
413 		} else
414 			break;
415 loop:
416 		if (!retry) {
417 			pr_err("CP HQD IQ timer status time out\n");
418 			break;
419 		}
420 		ndelay(100);
421 		--retry;
422 	}
423 	retry = 1000;
424 	while (true) {
425 		temp = RREG32(mmCP_HQD_DEQUEUE_REQUEST);
426 		if (!(temp & CP_HQD_DEQUEUE_REQUEST__IQ_REQ_PEND_MASK))
427 			break;
428 		pr_debug("Dequeue request is pending\n");
429 
430 		if (!retry) {
431 			pr_err("CP HQD dequeue request time out\n");
432 			break;
433 		}
434 		ndelay(100);
435 		--retry;
436 	}
437 	local_irq_restore(flags);
438 	preempt_enable();
439 
440 	WREG32(mmCP_HQD_DEQUEUE_REQUEST, type);
441 
442 	end_jiffies = (utimeout * HZ / 1000) + jiffies;
443 	while (true) {
444 		temp = RREG32(mmCP_HQD_ACTIVE);
445 		if (!(temp & CP_HQD_ACTIVE__ACTIVE_MASK))
446 			break;
447 		if (time_after(jiffies, end_jiffies)) {
448 			pr_err("cp queue preemption time out\n");
449 			release_queue(adev);
450 			return -ETIME;
451 		}
452 		usleep_range(500, 1000);
453 	}
454 
455 	release_queue(adev);
456 	return 0;
457 }
458 
459 static int kgd_hqd_sdma_destroy(struct amdgpu_device *adev, void *mqd,
460 				unsigned int utimeout)
461 {
462 	struct cik_sdma_rlc_registers *m;
463 	uint32_t sdma_rlc_reg_offset;
464 	uint32_t temp;
465 	unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
466 
467 	m = get_sdma_mqd(mqd);
468 	sdma_rlc_reg_offset = get_sdma_rlc_reg_offset(m);
469 
470 	temp = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL);
471 	temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
472 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL, temp);
473 
474 	while (true) {
475 		temp = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_CONTEXT_STATUS);
476 		if (temp & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
477 			break;
478 		if (time_after(jiffies, end_jiffies)) {
479 			pr_err("SDMA RLC not idle in %s\n", __func__);
480 			return -ETIME;
481 		}
482 		usleep_range(500, 1000);
483 	}
484 
485 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_DOORBELL, 0);
486 	WREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL,
487 		RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_CNTL) |
488 		SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK);
489 
490 	m->sdma_rlc_rb_rptr = RREG32(sdma_rlc_reg_offset + mmSDMA0_RLC0_RB_RPTR);
491 
492 	return 0;
493 }
494 
495 static int kgd_wave_control_execute(struct amdgpu_device *adev,
496 					uint32_t gfx_index_val,
497 					uint32_t sq_cmd)
498 {
499 	uint32_t data;
500 
501 	mutex_lock(&adev->grbm_idx_mutex);
502 
503 	WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
504 	WREG32(mmSQ_CMD, sq_cmd);
505 
506 	/*  Restore the GRBM_GFX_INDEX register  */
507 
508 	data = GRBM_GFX_INDEX__INSTANCE_BROADCAST_WRITES_MASK |
509 		GRBM_GFX_INDEX__SH_BROADCAST_WRITES_MASK |
510 		GRBM_GFX_INDEX__SE_BROADCAST_WRITES_MASK;
511 
512 	WREG32(mmGRBM_GFX_INDEX, data);
513 
514 	mutex_unlock(&adev->grbm_idx_mutex);
515 
516 	return 0;
517 }
518 
519 static bool get_atc_vmid_pasid_mapping_info(struct amdgpu_device *adev,
520 					uint8_t vmid, uint16_t *p_pasid)
521 {
522 	uint32_t value;
523 
524 	value = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
525 	*p_pasid = value & ATC_VMID0_PASID_MAPPING__PASID_MASK;
526 
527 	return !!(value & ATC_VMID0_PASID_MAPPING__VALID_MASK);
528 }
529 
530 static void set_scratch_backing_va(struct amdgpu_device *adev,
531 					uint64_t va, uint32_t vmid)
532 {
533 	lock_srbm(adev, 0, 0, 0, vmid);
534 	WREG32(mmSH_HIDDEN_PRIVATE_BASE_VMID, va);
535 	unlock_srbm(adev);
536 }
537 
538 static void set_vm_context_page_table_base(struct amdgpu_device *adev,
539 			uint32_t vmid, uint64_t page_table_base)
540 {
541 	if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
542 		pr_err("trying to set page table base for wrong VMID\n");
543 		return;
544 	}
545 	WREG32(mmVM_CONTEXT8_PAGE_TABLE_BASE_ADDR + vmid - 8,
546 		lower_32_bits(page_table_base));
547 }
548 
549  /**
550   * read_vmid_from_vmfault_reg - read vmid from register
551   *
552   * adev: amdgpu_device pointer
553   * @vmid: vmid pointer
554   * read vmid from register (CIK).
555   */
556 static uint32_t read_vmid_from_vmfault_reg(struct amdgpu_device *adev)
557 {
558 	uint32_t status = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS);
559 
560 	return REG_GET_FIELD(status, VM_CONTEXT1_PROTECTION_FAULT_STATUS, VMID);
561 }
562 
563 const struct kfd2kgd_calls gfx_v7_kfd2kgd = {
564 	.program_sh_mem_settings = kgd_program_sh_mem_settings,
565 	.set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
566 	.init_interrupts = kgd_init_interrupts,
567 	.hqd_load = kgd_hqd_load,
568 	.hqd_sdma_load = kgd_hqd_sdma_load,
569 	.hqd_dump = kgd_hqd_dump,
570 	.hqd_sdma_dump = kgd_hqd_sdma_dump,
571 	.hqd_is_occupied = kgd_hqd_is_occupied,
572 	.hqd_sdma_is_occupied = kgd_hqd_sdma_is_occupied,
573 	.hqd_destroy = kgd_hqd_destroy,
574 	.hqd_sdma_destroy = kgd_hqd_sdma_destroy,
575 	.wave_control_execute = kgd_wave_control_execute,
576 	.get_atc_vmid_pasid_mapping_info = get_atc_vmid_pasid_mapping_info,
577 	.set_scratch_backing_va = set_scratch_backing_va,
578 	.set_vm_context_page_table_base = set_vm_context_page_table_base,
579 	.read_vmid_from_vmfault_reg = read_vmid_from_vmfault_reg,
580 };
581