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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 <linux/fdtable.h>
24#include <linux/uaccess.h>
25#include <linux/mmu_context.h>
26
27#include "amdgpu.h"
28#include "amdgpu_amdkfd.h"
29#include "cikd.h"
30#include "cik_sdma.h"
31#include "gfx_v7_0.h"
32#include "gca/gfx_7_2_d.h"
33#include "gca/gfx_7_2_enum.h"
34#include "gca/gfx_7_2_sh_mask.h"
35#include "oss/oss_2_0_d.h"
36#include "oss/oss_2_0_sh_mask.h"
37#include "gmc/gmc_7_1_d.h"
38#include "gmc/gmc_7_1_sh_mask.h"
39#include "cik_structs.h"
40
41enum hqd_dequeue_request_type {
42 NO_ACTION = 0,
43 DRAIN_PIPE,
44 RESET_WAVES
45};
46
47enum {
48 MAX_TRAPID = 8, /* 3 bits in the bitfield. */
49 MAX_WATCH_ADDRESSES = 4
50};
51
52enum {
53 ADDRESS_WATCH_REG_ADDR_HI = 0,
54 ADDRESS_WATCH_REG_ADDR_LO,
55 ADDRESS_WATCH_REG_CNTL,
56 ADDRESS_WATCH_REG_MAX
57};
58
59/* not defined in the CI/KV reg file */
60enum {
61 ADDRESS_WATCH_REG_CNTL_ATC_BIT = 0x10000000UL,
62 ADDRESS_WATCH_REG_CNTL_DEFAULT_MASK = 0x00FFFFFF,
63 ADDRESS_WATCH_REG_ADDLOW_MASK_EXTENSION = 0x03000000,
64 /* extend the mask to 26 bits to match the low address field */
65 ADDRESS_WATCH_REG_ADDLOW_SHIFT = 6,
66 ADDRESS_WATCH_REG_ADDHIGH_MASK = 0xFFFF
67};
68
69static const uint32_t watchRegs[MAX_WATCH_ADDRESSES * ADDRESS_WATCH_REG_MAX] = {
70 mmTCP_WATCH0_ADDR_H, mmTCP_WATCH0_ADDR_L, mmTCP_WATCH0_CNTL,
71 mmTCP_WATCH1_ADDR_H, mmTCP_WATCH1_ADDR_L, mmTCP_WATCH1_CNTL,
72 mmTCP_WATCH2_ADDR_H, mmTCP_WATCH2_ADDR_L, mmTCP_WATCH2_CNTL,
73 mmTCP_WATCH3_ADDR_H, mmTCP_WATCH3_ADDR_L, mmTCP_WATCH3_CNTL
74};
75
76union TCP_WATCH_CNTL_BITS {
77 struct {
78 uint32_t mask:24;
79 uint32_t vmid:4;
80 uint32_t atc:1;
81 uint32_t mode:2;
82 uint32_t valid:1;
83 } bitfields, bits;
84 uint32_t u32All;
85 signed int i32All;
86 float f32All;
87};
88
89/*
90 * Register access functions
91 */
92
93static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
94 uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
95 uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
96
97static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
98 unsigned int vmid);
99
100static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id);
101static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
102 uint32_t queue_id, uint32_t __user *wptr,
103 uint32_t wptr_shift, uint32_t wptr_mask,
104 struct mm_struct *mm);
105static int kgd_hqd_dump(struct kgd_dev *kgd,
106 uint32_t pipe_id, uint32_t queue_id,
107 uint32_t (**dump)[2], uint32_t *n_regs);
108static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
109 uint32_t __user *wptr, struct mm_struct *mm);
110static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
111 uint32_t engine_id, uint32_t queue_id,
112 uint32_t (**dump)[2], uint32_t *n_regs);
113static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
114 uint32_t pipe_id, uint32_t queue_id);
115
116static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
117 enum kfd_preempt_type reset_type,
118 unsigned int utimeout, uint32_t pipe_id,
119 uint32_t queue_id);
120static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd);
121static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
122 unsigned int utimeout);
123static int kgd_address_watch_disable(struct kgd_dev *kgd);
124static int kgd_address_watch_execute(struct kgd_dev *kgd,
125 unsigned int watch_point_id,
126 uint32_t cntl_val,
127 uint32_t addr_hi,
128 uint32_t addr_lo);
129static int kgd_wave_control_execute(struct kgd_dev *kgd,
130 uint32_t gfx_index_val,
131 uint32_t sq_cmd);
132static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
133 unsigned int watch_point_id,
134 unsigned int reg_offset);
135
136static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd, uint8_t vmid);
137static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
138 uint8_t vmid);
139
140static void set_scratch_backing_va(struct kgd_dev *kgd,
141 uint64_t va, uint32_t vmid);
142static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
143 uint64_t page_table_base);
144static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid);
145static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid);
146static uint32_t read_vmid_from_vmfault_reg(struct kgd_dev *kgd);
147
148/* Because of REG_GET_FIELD() being used, we put this function in the
149 * asic specific file.
150 */
151static int get_tile_config(struct kgd_dev *kgd,
152 struct tile_config *config)
153{
154 struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
155
156 config->gb_addr_config = adev->gfx.config.gb_addr_config;
157 config->num_banks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
158 MC_ARB_RAMCFG, NOOFBANK);
159 config->num_ranks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
160 MC_ARB_RAMCFG, NOOFRANKS);
161
162 config->tile_config_ptr = adev->gfx.config.tile_mode_array;
163 config->num_tile_configs =
164 ARRAY_SIZE(adev->gfx.config.tile_mode_array);
165 config->macro_tile_config_ptr =
166 adev->gfx.config.macrotile_mode_array;
167 config->num_macro_tile_configs =
168 ARRAY_SIZE(adev->gfx.config.macrotile_mode_array);
169
170 return 0;
171}
172
173static const struct kfd2kgd_calls kfd2kgd = {
174 .program_sh_mem_settings = kgd_program_sh_mem_settings,
175 .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
176 .init_interrupts = kgd_init_interrupts,
177 .hqd_load = kgd_hqd_load,
178 .hqd_sdma_load = kgd_hqd_sdma_load,
179 .hqd_dump = kgd_hqd_dump,
180 .hqd_sdma_dump = kgd_hqd_sdma_dump,
181 .hqd_is_occupied = kgd_hqd_is_occupied,
182 .hqd_sdma_is_occupied = kgd_hqd_sdma_is_occupied,
183 .hqd_destroy = kgd_hqd_destroy,
184 .hqd_sdma_destroy = kgd_hqd_sdma_destroy,
185 .address_watch_disable = kgd_address_watch_disable,
186 .address_watch_execute = kgd_address_watch_execute,
187 .wave_control_execute = kgd_wave_control_execute,
188 .address_watch_get_offset = kgd_address_watch_get_offset,
189 .get_atc_vmid_pasid_mapping_pasid = get_atc_vmid_pasid_mapping_pasid,
190 .get_atc_vmid_pasid_mapping_valid = get_atc_vmid_pasid_mapping_valid,
191 .set_scratch_backing_va = set_scratch_backing_va,
192 .get_tile_config = get_tile_config,
193 .set_vm_context_page_table_base = set_vm_context_page_table_base,
194 .invalidate_tlbs = invalidate_tlbs,
195 .invalidate_tlbs_vmid = invalidate_tlbs_vmid,
196 .read_vmid_from_vmfault_reg = read_vmid_from_vmfault_reg,
197};
198
199struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void)
200{
201 return (struct kfd2kgd_calls *)&kfd2kgd;
202}
203
204static inline struct amdgpu_device *get_amdgpu_device(struct kgd_dev *kgd)
205{
206 return (struct amdgpu_device *)kgd;
207}
208
209static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
210 uint32_t queue, uint32_t vmid)
211{
212 struct amdgpu_device *adev = get_amdgpu_device(kgd);
213 uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
214
215 mutex_lock(&adev->srbm_mutex);
216 WREG32(mmSRBM_GFX_CNTL, value);
217}
218
219static void unlock_srbm(struct kgd_dev *kgd)
220{
221 struct amdgpu_device *adev = get_amdgpu_device(kgd);
222
223 WREG32(mmSRBM_GFX_CNTL, 0);
224 mutex_unlock(&adev->srbm_mutex);
225}
226
227static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
228 uint32_t queue_id)
229{
230 struct amdgpu_device *adev = get_amdgpu_device(kgd);
231
232 uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
233 uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
234
235 lock_srbm(kgd, mec, pipe, queue_id, 0);
236}
237
238static void release_queue(struct kgd_dev *kgd)
239{
240 unlock_srbm(kgd);
241}
242
243static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
244 uint32_t sh_mem_config,
245 uint32_t sh_mem_ape1_base,
246 uint32_t sh_mem_ape1_limit,
247 uint32_t sh_mem_bases)
248{
249 struct amdgpu_device *adev = get_amdgpu_device(kgd);
250
251 lock_srbm(kgd, 0, 0, 0, vmid);
252
253 WREG32(mmSH_MEM_CONFIG, sh_mem_config);
254 WREG32(mmSH_MEM_APE1_BASE, sh_mem_ape1_base);
255 WREG32(mmSH_MEM_APE1_LIMIT, sh_mem_ape1_limit);
256 WREG32(mmSH_MEM_BASES, sh_mem_bases);
257
258 unlock_srbm(kgd);
259}
260
261static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
262 unsigned int vmid)
263{
264 struct amdgpu_device *adev = get_amdgpu_device(kgd);
265
266 /*
267 * We have to assume that there is no outstanding mapping.
268 * The ATC_VMID_PASID_MAPPING_UPDATE_STATUS bit could be 0 because
269 * a mapping is in progress or because a mapping finished and the
270 * SW cleared it. So the protocol is to always wait & clear.
271 */
272 uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
273 ATC_VMID0_PASID_MAPPING__VALID_MASK;
274
275 WREG32(mmATC_VMID0_PASID_MAPPING + vmid, pasid_mapping);
276
277 while (!(RREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS) & (1U << vmid)))
278 cpu_relax();
279 WREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS, 1U << vmid);
280
281 /* Mapping vmid to pasid also for IH block */
282 WREG32(mmIH_VMID_0_LUT + vmid, pasid_mapping);
283
284 return 0;
285}
286
287static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id)
288{
289 struct amdgpu_device *adev = get_amdgpu_device(kgd);
290 uint32_t mec;
291 uint32_t pipe;
292
293 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
294 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
295
296 lock_srbm(kgd, mec, pipe, 0, 0);
297
298 WREG32(mmCPC_INT_CNTL, CP_INT_CNTL_RING0__TIME_STAMP_INT_ENABLE_MASK |
299 CP_INT_CNTL_RING0__OPCODE_ERROR_INT_ENABLE_MASK);
300
301 unlock_srbm(kgd);
302
303 return 0;
304}
305
306static inline uint32_t get_sdma_base_addr(struct cik_sdma_rlc_registers *m)
307{
308 uint32_t retval;
309
310 retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET +
311 m->sdma_queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
312
313 pr_debug("sdma base address: 0x%x\n", retval);
314
315 return retval;
316}
317
318static inline struct cik_mqd *get_mqd(void *mqd)
319{
320 return (struct cik_mqd *)mqd;
321}
322
323static inline struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
324{
325 return (struct cik_sdma_rlc_registers *)mqd;
326}
327
328static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
329 uint32_t queue_id, uint32_t __user *wptr,
330 uint32_t wptr_shift, uint32_t wptr_mask,
331 struct mm_struct *mm)
332{
333 struct amdgpu_device *adev = get_amdgpu_device(kgd);
334 struct cik_mqd *m;
335 uint32_t *mqd_hqd;
336 uint32_t reg, wptr_val, data;
337 bool valid_wptr = false;
338
339 m = get_mqd(mqd);
340
341 acquire_queue(kgd, pipe_id, queue_id);
342
343 /* HQD registers extend from CP_MQD_BASE_ADDR to CP_MQD_CONTROL. */
344 mqd_hqd = &m->cp_mqd_base_addr_lo;
345
346 for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_MQD_CONTROL; reg++)
347 WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
348
349 /* Copy userspace write pointer value to register.
350 * Activate doorbell logic to monitor subsequent changes.
351 */
352 data = REG_SET_FIELD(m->cp_hqd_pq_doorbell_control,
353 CP_HQD_PQ_DOORBELL_CONTROL, DOORBELL_EN, 1);
354 WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, data);
355
356 /* read_user_ptr may take the mm->mmap_sem.
357 * release srbm_mutex to avoid circular dependency between
358 * srbm_mutex->mm_sem->reservation_ww_class_mutex->srbm_mutex.
359 */
360 release_queue(kgd);
361 valid_wptr = read_user_wptr(mm, wptr, wptr_val);
362 acquire_queue(kgd, pipe_id, queue_id);
363 if (valid_wptr)
364 WREG32(mmCP_HQD_PQ_WPTR, (wptr_val << wptr_shift) & wptr_mask);
365
366 data = REG_SET_FIELD(m->cp_hqd_active, CP_HQD_ACTIVE, ACTIVE, 1);
367 WREG32(mmCP_HQD_ACTIVE, data);
368
369 release_queue(kgd);
370
371 return 0;
372}
373
374static int kgd_hqd_dump(struct kgd_dev *kgd,
375 uint32_t pipe_id, uint32_t queue_id,
376 uint32_t (**dump)[2], uint32_t *n_regs)
377{
378 struct amdgpu_device *adev = get_amdgpu_device(kgd);
379 uint32_t i = 0, reg;
380#define HQD_N_REGS (35+4)
381#define DUMP_REG(addr) do { \
382 if (WARN_ON_ONCE(i >= HQD_N_REGS)) \
383 break; \
384 (*dump)[i][0] = (addr) << 2; \
385 (*dump)[i++][1] = RREG32(addr); \
386 } while (0)
387
388 *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
389 if (*dump == NULL)
390 return -ENOMEM;
391
392 acquire_queue(kgd, pipe_id, queue_id);
393
394 DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE0);
395 DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE1);
396 DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE2);
397 DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE3);
398
399 for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_MQD_CONTROL; reg++)
400 DUMP_REG(reg);
401
402 release_queue(kgd);
403
404 WARN_ON_ONCE(i != HQD_N_REGS);
405 *n_regs = i;
406
407 return 0;
408}
409
410static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
411 uint32_t __user *wptr, struct mm_struct *mm)
412{
413 struct amdgpu_device *adev = get_amdgpu_device(kgd);
414 struct cik_sdma_rlc_registers *m;
415 unsigned long end_jiffies;
416 uint32_t sdma_base_addr;
417 uint32_t data;
418
419 m = get_sdma_mqd(mqd);
420 sdma_base_addr = get_sdma_base_addr(m);
421
422 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
423 m->sdma_rlc_rb_cntl & (~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK));
424
425 end_jiffies = msecs_to_jiffies(2000) + jiffies;
426 while (true) {
427 data = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
428 if (data & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
429 break;
430 if (time_after(jiffies, end_jiffies))
431 return -ETIME;
432 usleep_range(500, 1000);
433 }
434 if (m->sdma_engine_id) {
435 data = RREG32(mmSDMA1_GFX_CONTEXT_CNTL);
436 data = REG_SET_FIELD(data, SDMA1_GFX_CONTEXT_CNTL,
437 RESUME_CTX, 0);
438 WREG32(mmSDMA1_GFX_CONTEXT_CNTL, data);
439 } else {
440 data = RREG32(mmSDMA0_GFX_CONTEXT_CNTL);
441 data = REG_SET_FIELD(data, SDMA0_GFX_CONTEXT_CNTL,
442 RESUME_CTX, 0);
443 WREG32(mmSDMA0_GFX_CONTEXT_CNTL, data);
444 }
445
446 data = REG_SET_FIELD(m->sdma_rlc_doorbell, SDMA0_RLC0_DOORBELL,
447 ENABLE, 1);
448 WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, data);
449 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR, m->sdma_rlc_rb_rptr);
450
451 if (read_user_wptr(mm, wptr, data))
452 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR, data);
453 else
454 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR,
455 m->sdma_rlc_rb_rptr);
456
457 WREG32(sdma_base_addr + mmSDMA0_RLC0_VIRTUAL_ADDR,
458 m->sdma_rlc_virtual_addr);
459 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE, m->sdma_rlc_rb_base);
460 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE_HI,
461 m->sdma_rlc_rb_base_hi);
462 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_LO,
463 m->sdma_rlc_rb_rptr_addr_lo);
464 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_HI,
465 m->sdma_rlc_rb_rptr_addr_hi);
466
467 data = REG_SET_FIELD(m->sdma_rlc_rb_cntl, SDMA0_RLC0_RB_CNTL,
468 RB_ENABLE, 1);
469 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, data);
470
471 return 0;
472}
473
474static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
475 uint32_t engine_id, uint32_t queue_id,
476 uint32_t (**dump)[2], uint32_t *n_regs)
477{
478 struct amdgpu_device *adev = get_amdgpu_device(kgd);
479 uint32_t sdma_offset = engine_id * SDMA1_REGISTER_OFFSET +
480 queue_id * KFD_CIK_SDMA_QUEUE_OFFSET;
481 uint32_t i = 0, reg;
482#undef HQD_N_REGS
483#define HQD_N_REGS (19+4)
484
485 *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
486 if (*dump == NULL)
487 return -ENOMEM;
488
489 for (reg = mmSDMA0_RLC0_RB_CNTL; reg <= mmSDMA0_RLC0_DOORBELL; reg++)
490 DUMP_REG(sdma_offset + reg);
491 for (reg = mmSDMA0_RLC0_VIRTUAL_ADDR; reg <= mmSDMA0_RLC0_WATERMARK;
492 reg++)
493 DUMP_REG(sdma_offset + reg);
494
495 WARN_ON_ONCE(i != HQD_N_REGS);
496 *n_regs = i;
497
498 return 0;
499}
500
501static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
502 uint32_t pipe_id, uint32_t queue_id)
503{
504 struct amdgpu_device *adev = get_amdgpu_device(kgd);
505 uint32_t act;
506 bool retval = false;
507 uint32_t low, high;
508
509 acquire_queue(kgd, pipe_id, queue_id);
510 act = RREG32(mmCP_HQD_ACTIVE);
511 if (act) {
512 low = lower_32_bits(queue_address >> 8);
513 high = upper_32_bits(queue_address >> 8);
514
515 if (low == RREG32(mmCP_HQD_PQ_BASE) &&
516 high == RREG32(mmCP_HQD_PQ_BASE_HI))
517 retval = true;
518 }
519 release_queue(kgd);
520 return retval;
521}
522
523static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd)
524{
525 struct amdgpu_device *adev = get_amdgpu_device(kgd);
526 struct cik_sdma_rlc_registers *m;
527 uint32_t sdma_base_addr;
528 uint32_t sdma_rlc_rb_cntl;
529
530 m = get_sdma_mqd(mqd);
531 sdma_base_addr = get_sdma_base_addr(m);
532
533 sdma_rlc_rb_cntl = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
534
535 if (sdma_rlc_rb_cntl & SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK)
536 return true;
537
538 return false;
539}
540
541static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
542 enum kfd_preempt_type reset_type,
543 unsigned int utimeout, uint32_t pipe_id,
544 uint32_t queue_id)
545{
546 struct amdgpu_device *adev = get_amdgpu_device(kgd);
547 uint32_t temp;
548 enum hqd_dequeue_request_type type;
549 unsigned long flags, end_jiffies;
550 int retry;
551
552 if (adev->in_gpu_reset)
553 return -EIO;
554
555 acquire_queue(kgd, pipe_id, queue_id);
556 WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, 0);
557
558 switch (reset_type) {
559 case KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN:
560 type = DRAIN_PIPE;
561 break;
562 case KFD_PREEMPT_TYPE_WAVEFRONT_RESET:
563 type = RESET_WAVES;
564 break;
565 default:
566 type = DRAIN_PIPE;
567 break;
568 }
569
570 /* Workaround: If IQ timer is active and the wait time is close to or
571 * equal to 0, dequeueing is not safe. Wait until either the wait time
572 * is larger or timer is cleared. Also, ensure that IQ_REQ_PEND is
573 * cleared before continuing. Also, ensure wait times are set to at
574 * least 0x3.
575 */
576 local_irq_save(flags);
577 preempt_disable();
578 retry = 5000; /* wait for 500 usecs at maximum */
579 while (true) {
580 temp = RREG32(mmCP_HQD_IQ_TIMER);
581 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, PROCESSING_IQ)) {
582 pr_debug("HW is processing IQ\n");
583 goto loop;
584 }
585 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, ACTIVE)) {
586 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, RETRY_TYPE)
587 == 3) /* SEM-rearm is safe */
588 break;
589 /* Wait time 3 is safe for CP, but our MMIO read/write
590 * time is close to 1 microsecond, so check for 10 to
591 * leave more buffer room
592 */
593 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, WAIT_TIME)
594 >= 10)
595 break;
596 pr_debug("IQ timer is active\n");
597 } else
598 break;
599loop:
600 if (!retry) {
601 pr_err("CP HQD IQ timer status time out\n");
602 break;
603 }
604 ndelay(100);
605 --retry;
606 }
607 retry = 1000;
608 while (true) {
609 temp = RREG32(mmCP_HQD_DEQUEUE_REQUEST);
610 if (!(temp & CP_HQD_DEQUEUE_REQUEST__IQ_REQ_PEND_MASK))
611 break;
612 pr_debug("Dequeue request is pending\n");
613
614 if (!retry) {
615 pr_err("CP HQD dequeue request time out\n");
616 break;
617 }
618 ndelay(100);
619 --retry;
620 }
621 local_irq_restore(flags);
622 preempt_enable();
623
624 WREG32(mmCP_HQD_DEQUEUE_REQUEST, type);
625
626 end_jiffies = (utimeout * HZ / 1000) + jiffies;
627 while (true) {
628 temp = RREG32(mmCP_HQD_ACTIVE);
629 if (!(temp & CP_HQD_ACTIVE__ACTIVE_MASK))
630 break;
631 if (time_after(jiffies, end_jiffies)) {
632 pr_err("cp queue preemption time out\n");
633 release_queue(kgd);
634 return -ETIME;
635 }
636 usleep_range(500, 1000);
637 }
638
639 release_queue(kgd);
640 return 0;
641}
642
643static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
644 unsigned int utimeout)
645{
646 struct amdgpu_device *adev = get_amdgpu_device(kgd);
647 struct cik_sdma_rlc_registers *m;
648 uint32_t sdma_base_addr;
649 uint32_t temp;
650 unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
651
652 m = get_sdma_mqd(mqd);
653 sdma_base_addr = get_sdma_base_addr(m);
654
655 temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
656 temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
657 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, temp);
658
659 while (true) {
660 temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
661 if (temp & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
662 break;
663 if (time_after(jiffies, end_jiffies))
664 return -ETIME;
665 usleep_range(500, 1000);
666 }
667
668 WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0);
669 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
670 RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL) |
671 SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK);
672
673 m->sdma_rlc_rb_rptr = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR);
674
675 return 0;
676}
677
678static int kgd_address_watch_disable(struct kgd_dev *kgd)
679{
680 struct amdgpu_device *adev = get_amdgpu_device(kgd);
681 union TCP_WATCH_CNTL_BITS cntl;
682 unsigned int i;
683
684 cntl.u32All = 0;
685
686 cntl.bitfields.valid = 0;
687 cntl.bitfields.mask = ADDRESS_WATCH_REG_CNTL_DEFAULT_MASK;
688 cntl.bitfields.atc = 1;
689
690 /* Turning off this address until we set all the registers */
691 for (i = 0; i < MAX_WATCH_ADDRESSES; i++)
692 WREG32(watchRegs[i * ADDRESS_WATCH_REG_MAX +
693 ADDRESS_WATCH_REG_CNTL], cntl.u32All);
694
695 return 0;
696}
697
698static int kgd_address_watch_execute(struct kgd_dev *kgd,
699 unsigned int watch_point_id,
700 uint32_t cntl_val,
701 uint32_t addr_hi,
702 uint32_t addr_lo)
703{
704 struct amdgpu_device *adev = get_amdgpu_device(kgd);
705 union TCP_WATCH_CNTL_BITS cntl;
706
707 cntl.u32All = cntl_val;
708
709 /* Turning off this watch point until we set all the registers */
710 cntl.bitfields.valid = 0;
711 WREG32(watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX +
712 ADDRESS_WATCH_REG_CNTL], cntl.u32All);
713
714 WREG32(watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX +
715 ADDRESS_WATCH_REG_ADDR_HI], addr_hi);
716
717 WREG32(watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX +
718 ADDRESS_WATCH_REG_ADDR_LO], addr_lo);
719
720 /* Enable the watch point */
721 cntl.bitfields.valid = 1;
722
723 WREG32(watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX +
724 ADDRESS_WATCH_REG_CNTL], cntl.u32All);
725
726 return 0;
727}
728
729static int kgd_wave_control_execute(struct kgd_dev *kgd,
730 uint32_t gfx_index_val,
731 uint32_t sq_cmd)
732{
733 struct amdgpu_device *adev = get_amdgpu_device(kgd);
734 uint32_t data;
735
736 mutex_lock(&adev->grbm_idx_mutex);
737
738 WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
739 WREG32(mmSQ_CMD, sq_cmd);
740
741 /* Restore the GRBM_GFX_INDEX register */
742
743 data = GRBM_GFX_INDEX__INSTANCE_BROADCAST_WRITES_MASK |
744 GRBM_GFX_INDEX__SH_BROADCAST_WRITES_MASK |
745 GRBM_GFX_INDEX__SE_BROADCAST_WRITES_MASK;
746
747 WREG32(mmGRBM_GFX_INDEX, data);
748
749 mutex_unlock(&adev->grbm_idx_mutex);
750
751 return 0;
752}
753
754static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
755 unsigned int watch_point_id,
756 unsigned int reg_offset)
757{
758 return watchRegs[watch_point_id * ADDRESS_WATCH_REG_MAX + reg_offset];
759}
760
761static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
762 uint8_t vmid)
763{
764 uint32_t reg;
765 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
766
767 reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
768 return reg & ATC_VMID0_PASID_MAPPING__VALID_MASK;
769}
770
771static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
772 uint8_t vmid)
773{
774 uint32_t reg;
775 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
776
777 reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
778 return reg & ATC_VMID0_PASID_MAPPING__PASID_MASK;
779}
780
781static void set_scratch_backing_va(struct kgd_dev *kgd,
782 uint64_t va, uint32_t vmid)
783{
784 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
785
786 lock_srbm(kgd, 0, 0, 0, vmid);
787 WREG32(mmSH_HIDDEN_PRIVATE_BASE_VMID, va);
788 unlock_srbm(kgd);
789}
790
791static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
792 uint64_t page_table_base)
793{
794 struct amdgpu_device *adev = get_amdgpu_device(kgd);
795
796 if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
797 pr_err("trying to set page table base for wrong VMID\n");
798 return;
799 }
800 WREG32(mmVM_CONTEXT8_PAGE_TABLE_BASE_ADDR + vmid - 8,
801 lower_32_bits(page_table_base));
802}
803
804static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
805{
806 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
807 int vmid;
808 unsigned int tmp;
809
810 if (adev->in_gpu_reset)
811 return -EIO;
812
813 for (vmid = 0; vmid < 16; vmid++) {
814 if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid))
815 continue;
816
817 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
818 if ((tmp & ATC_VMID0_PASID_MAPPING__VALID_MASK) &&
819 (tmp & ATC_VMID0_PASID_MAPPING__PASID_MASK) == pasid) {
820 WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
821 RREG32(mmVM_INVALIDATE_RESPONSE);
822 break;
823 }
824 }
825
826 return 0;
827}
828
829static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid)
830{
831 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
832
833 if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
834 pr_err("non kfd vmid\n");
835 return 0;
836 }
837
838 WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
839 RREG32(mmVM_INVALIDATE_RESPONSE);
840 return 0;
841}
842
843 /**
844 * read_vmid_from_vmfault_reg - read vmid from register
845 *
846 * adev: amdgpu_device pointer
847 * @vmid: vmid pointer
848 * read vmid from register (CIK).
849 */
850static uint32_t read_vmid_from_vmfault_reg(struct kgd_dev *kgd)
851{
852 struct amdgpu_device *adev = get_amdgpu_device(kgd);
853
854 uint32_t status = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS);
855
856 return REG_GET_FIELD(status, VM_CONTEXT1_PROTECTION_FAULT_STATUS, VMID);
857}