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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/module.h>
24#include <linux/fdtable.h>
25#include <linux/uaccess.h>
26#include <linux/firmware.h>
27#include <drm/drmP.h>
28#include "amdgpu.h"
29#include "amdgpu_amdkfd.h"
30#include "amdgpu_ucode.h"
31#include "gca/gfx_8_0_sh_mask.h"
32#include "gca/gfx_8_0_d.h"
33#include "gca/gfx_8_0_enum.h"
34#include "oss/oss_3_0_sh_mask.h"
35#include "oss/oss_3_0_d.h"
36#include "gmc/gmc_8_1_sh_mask.h"
37#include "gmc/gmc_8_1_d.h"
38#include "vi_structs.h"
39#include "vid.h"
40
41#define VI_PIPE_PER_MEC (4)
42
43struct cik_sdma_rlc_registers;
44
45/*
46 * Register access functions
47 */
48
49static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
50 uint32_t sh_mem_config,
51 uint32_t sh_mem_ape1_base, uint32_t sh_mem_ape1_limit,
52 uint32_t sh_mem_bases);
53static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
54 unsigned int vmid);
55static int kgd_init_pipeline(struct kgd_dev *kgd, uint32_t pipe_id,
56 uint32_t hpd_size, uint64_t hpd_gpu_addr);
57static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id);
58static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
59 uint32_t queue_id, uint32_t __user *wptr);
60static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd);
61static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
62 uint32_t pipe_id, uint32_t queue_id);
63static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd);
64static int kgd_hqd_destroy(struct kgd_dev *kgd, uint32_t reset_type,
65 unsigned int timeout, uint32_t pipe_id,
66 uint32_t queue_id);
67static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
68 unsigned int timeout);
69static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid);
70static int kgd_address_watch_disable(struct kgd_dev *kgd);
71static int kgd_address_watch_execute(struct kgd_dev *kgd,
72 unsigned int watch_point_id,
73 uint32_t cntl_val,
74 uint32_t addr_hi,
75 uint32_t addr_lo);
76static int kgd_wave_control_execute(struct kgd_dev *kgd,
77 uint32_t gfx_index_val,
78 uint32_t sq_cmd);
79static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
80 unsigned int watch_point_id,
81 unsigned int reg_offset);
82
83static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
84 uint8_t vmid);
85static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
86 uint8_t vmid);
87static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid);
88static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type);
89
90static const struct kfd2kgd_calls kfd2kgd = {
91 .init_gtt_mem_allocation = alloc_gtt_mem,
92 .free_gtt_mem = free_gtt_mem,
93 .get_vmem_size = get_vmem_size,
94 .get_gpu_clock_counter = get_gpu_clock_counter,
95 .get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz,
96 .program_sh_mem_settings = kgd_program_sh_mem_settings,
97 .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
98 .init_pipeline = kgd_init_pipeline,
99 .init_interrupts = kgd_init_interrupts,
100 .hqd_load = kgd_hqd_load,
101 .hqd_sdma_load = kgd_hqd_sdma_load,
102 .hqd_is_occupied = kgd_hqd_is_occupied,
103 .hqd_sdma_is_occupied = kgd_hqd_sdma_is_occupied,
104 .hqd_destroy = kgd_hqd_destroy,
105 .hqd_sdma_destroy = kgd_hqd_sdma_destroy,
106 .address_watch_disable = kgd_address_watch_disable,
107 .address_watch_execute = kgd_address_watch_execute,
108 .wave_control_execute = kgd_wave_control_execute,
109 .address_watch_get_offset = kgd_address_watch_get_offset,
110 .get_atc_vmid_pasid_mapping_pasid =
111 get_atc_vmid_pasid_mapping_pasid,
112 .get_atc_vmid_pasid_mapping_valid =
113 get_atc_vmid_pasid_mapping_valid,
114 .write_vmid_invalidate_request = write_vmid_invalidate_request,
115 .get_fw_version = get_fw_version
116};
117
118struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void)
119{
120 return (struct kfd2kgd_calls *)&kfd2kgd;
121}
122
123static inline struct amdgpu_device *get_amdgpu_device(struct kgd_dev *kgd)
124{
125 return (struct amdgpu_device *)kgd;
126}
127
128static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
129 uint32_t queue, uint32_t vmid)
130{
131 struct amdgpu_device *adev = get_amdgpu_device(kgd);
132 uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
133
134 mutex_lock(&adev->srbm_mutex);
135 WREG32(mmSRBM_GFX_CNTL, value);
136}
137
138static void unlock_srbm(struct kgd_dev *kgd)
139{
140 struct amdgpu_device *adev = get_amdgpu_device(kgd);
141
142 WREG32(mmSRBM_GFX_CNTL, 0);
143 mutex_unlock(&adev->srbm_mutex);
144}
145
146static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
147 uint32_t queue_id)
148{
149 uint32_t mec = (++pipe_id / VI_PIPE_PER_MEC) + 1;
150 uint32_t pipe = (pipe_id % VI_PIPE_PER_MEC);
151
152 lock_srbm(kgd, mec, pipe, queue_id, 0);
153}
154
155static void release_queue(struct kgd_dev *kgd)
156{
157 unlock_srbm(kgd);
158}
159
160static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
161 uint32_t sh_mem_config,
162 uint32_t sh_mem_ape1_base,
163 uint32_t sh_mem_ape1_limit,
164 uint32_t sh_mem_bases)
165{
166 struct amdgpu_device *adev = get_amdgpu_device(kgd);
167
168 lock_srbm(kgd, 0, 0, 0, vmid);
169
170 WREG32(mmSH_MEM_CONFIG, sh_mem_config);
171 WREG32(mmSH_MEM_APE1_BASE, sh_mem_ape1_base);
172 WREG32(mmSH_MEM_APE1_LIMIT, sh_mem_ape1_limit);
173 WREG32(mmSH_MEM_BASES, sh_mem_bases);
174
175 unlock_srbm(kgd);
176}
177
178static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
179 unsigned int vmid)
180{
181 struct amdgpu_device *adev = get_amdgpu_device(kgd);
182
183 /*
184 * We have to assume that there is no outstanding mapping.
185 * The ATC_VMID_PASID_MAPPING_UPDATE_STATUS bit could be 0 because
186 * a mapping is in progress or because a mapping finished
187 * and the SW cleared it.
188 * So the protocol is to always wait & clear.
189 */
190 uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
191 ATC_VMID0_PASID_MAPPING__VALID_MASK;
192
193 WREG32(mmATC_VMID0_PASID_MAPPING + vmid, pasid_mapping);
194
195 while (!(RREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS) & (1U << vmid)))
196 cpu_relax();
197 WREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS, 1U << vmid);
198
199 /* Mapping vmid to pasid also for IH block */
200 WREG32(mmIH_VMID_0_LUT + vmid, pasid_mapping);
201
202 return 0;
203}
204
205static int kgd_init_pipeline(struct kgd_dev *kgd, uint32_t pipe_id,
206 uint32_t hpd_size, uint64_t hpd_gpu_addr)
207{
208 return 0;
209}
210
211static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id)
212{
213 struct amdgpu_device *adev = get_amdgpu_device(kgd);
214 uint32_t mec;
215 uint32_t pipe;
216
217 mec = (++pipe_id / VI_PIPE_PER_MEC) + 1;
218 pipe = (pipe_id % VI_PIPE_PER_MEC);
219
220 lock_srbm(kgd, mec, pipe, 0, 0);
221
222 WREG32(mmCPC_INT_CNTL, CP_INT_CNTL_RING0__TIME_STAMP_INT_ENABLE_MASK);
223
224 unlock_srbm(kgd);
225
226 return 0;
227}
228
229static inline uint32_t get_sdma_base_addr(struct cik_sdma_rlc_registers *m)
230{
231 return 0;
232}
233
234static inline struct vi_mqd *get_mqd(void *mqd)
235{
236 return (struct vi_mqd *)mqd;
237}
238
239static inline struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
240{
241 return (struct cik_sdma_rlc_registers *)mqd;
242}
243
244static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
245 uint32_t queue_id, uint32_t __user *wptr)
246{
247 struct vi_mqd *m;
248 uint32_t shadow_wptr, valid_wptr;
249 struct amdgpu_device *adev = get_amdgpu_device(kgd);
250
251 m = get_mqd(mqd);
252
253 valid_wptr = copy_from_user(&shadow_wptr, wptr, sizeof(shadow_wptr));
254 acquire_queue(kgd, pipe_id, queue_id);
255
256 WREG32(mmCP_MQD_CONTROL, m->cp_mqd_control);
257 WREG32(mmCP_MQD_BASE_ADDR, m->cp_mqd_base_addr_lo);
258 WREG32(mmCP_MQD_BASE_ADDR_HI, m->cp_mqd_base_addr_hi);
259
260 WREG32(mmCP_HQD_VMID, m->cp_hqd_vmid);
261 WREG32(mmCP_HQD_PERSISTENT_STATE, m->cp_hqd_persistent_state);
262 WREG32(mmCP_HQD_PIPE_PRIORITY, m->cp_hqd_pipe_priority);
263 WREG32(mmCP_HQD_QUEUE_PRIORITY, m->cp_hqd_queue_priority);
264 WREG32(mmCP_HQD_QUANTUM, m->cp_hqd_quantum);
265 WREG32(mmCP_HQD_PQ_BASE, m->cp_hqd_pq_base_lo);
266 WREG32(mmCP_HQD_PQ_BASE_HI, m->cp_hqd_pq_base_hi);
267 WREG32(mmCP_HQD_PQ_RPTR_REPORT_ADDR, m->cp_hqd_pq_rptr_report_addr_lo);
268 WREG32(mmCP_HQD_PQ_RPTR_REPORT_ADDR_HI,
269 m->cp_hqd_pq_rptr_report_addr_hi);
270
271 if (valid_wptr > 0)
272 WREG32(mmCP_HQD_PQ_WPTR, shadow_wptr);
273
274 WREG32(mmCP_HQD_PQ_CONTROL, m->cp_hqd_pq_control);
275 WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, m->cp_hqd_pq_doorbell_control);
276
277 WREG32(mmCP_HQD_EOP_BASE_ADDR, m->cp_hqd_eop_base_addr_lo);
278 WREG32(mmCP_HQD_EOP_BASE_ADDR_HI, m->cp_hqd_eop_base_addr_hi);
279 WREG32(mmCP_HQD_EOP_CONTROL, m->cp_hqd_eop_control);
280 WREG32(mmCP_HQD_EOP_RPTR, m->cp_hqd_eop_rptr);
281 WREG32(mmCP_HQD_EOP_WPTR, m->cp_hqd_eop_wptr);
282 WREG32(mmCP_HQD_EOP_EVENTS, m->cp_hqd_eop_done_events);
283
284 WREG32(mmCP_HQD_CTX_SAVE_BASE_ADDR_LO, m->cp_hqd_ctx_save_base_addr_lo);
285 WREG32(mmCP_HQD_CTX_SAVE_BASE_ADDR_HI, m->cp_hqd_ctx_save_base_addr_hi);
286 WREG32(mmCP_HQD_CTX_SAVE_CONTROL, m->cp_hqd_ctx_save_control);
287 WREG32(mmCP_HQD_CNTL_STACK_OFFSET, m->cp_hqd_cntl_stack_offset);
288 WREG32(mmCP_HQD_CNTL_STACK_SIZE, m->cp_hqd_cntl_stack_size);
289 WREG32(mmCP_HQD_WG_STATE_OFFSET, m->cp_hqd_wg_state_offset);
290 WREG32(mmCP_HQD_CTX_SAVE_SIZE, m->cp_hqd_ctx_save_size);
291
292 WREG32(mmCP_HQD_IB_CONTROL, m->cp_hqd_ib_control);
293
294 WREG32(mmCP_HQD_DEQUEUE_REQUEST, m->cp_hqd_dequeue_request);
295 WREG32(mmCP_HQD_ERROR, m->cp_hqd_error);
296 WREG32(mmCP_HQD_EOP_WPTR_MEM, m->cp_hqd_eop_wptr_mem);
297 WREG32(mmCP_HQD_EOP_DONES, m->cp_hqd_eop_dones);
298
299 WREG32(mmCP_HQD_ACTIVE, m->cp_hqd_active);
300
301 release_queue(kgd);
302
303 return 0;
304}
305
306static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd)
307{
308 return 0;
309}
310
311static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
312 uint32_t pipe_id, uint32_t queue_id)
313{
314 struct amdgpu_device *adev = get_amdgpu_device(kgd);
315 uint32_t act;
316 bool retval = false;
317 uint32_t low, high;
318
319 acquire_queue(kgd, pipe_id, queue_id);
320 act = RREG32(mmCP_HQD_ACTIVE);
321 if (act) {
322 low = lower_32_bits(queue_address >> 8);
323 high = upper_32_bits(queue_address >> 8);
324
325 if (low == RREG32(mmCP_HQD_PQ_BASE) &&
326 high == RREG32(mmCP_HQD_PQ_BASE_HI))
327 retval = true;
328 }
329 release_queue(kgd);
330 return retval;
331}
332
333static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd)
334{
335 struct amdgpu_device *adev = get_amdgpu_device(kgd);
336 struct cik_sdma_rlc_registers *m;
337 uint32_t sdma_base_addr;
338 uint32_t sdma_rlc_rb_cntl;
339
340 m = get_sdma_mqd(mqd);
341 sdma_base_addr = get_sdma_base_addr(m);
342
343 sdma_rlc_rb_cntl = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
344
345 if (sdma_rlc_rb_cntl & SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK)
346 return true;
347
348 return false;
349}
350
351static int kgd_hqd_destroy(struct kgd_dev *kgd, uint32_t reset_type,
352 unsigned int timeout, uint32_t pipe_id,
353 uint32_t queue_id)
354{
355 struct amdgpu_device *adev = get_amdgpu_device(kgd);
356 uint32_t temp;
357
358 acquire_queue(kgd, pipe_id, queue_id);
359
360 WREG32(mmCP_HQD_DEQUEUE_REQUEST, reset_type);
361
362 while (true) {
363 temp = RREG32(mmCP_HQD_ACTIVE);
364 if (temp & CP_HQD_ACTIVE__ACTIVE_MASK)
365 break;
366 if (timeout == 0) {
367 pr_err("kfd: cp queue preemption time out (%dms)\n",
368 temp);
369 release_queue(kgd);
370 return -ETIME;
371 }
372 msleep(20);
373 timeout -= 20;
374 }
375
376 release_queue(kgd);
377 return 0;
378}
379
380static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
381 unsigned int timeout)
382{
383 struct amdgpu_device *adev = get_amdgpu_device(kgd);
384 struct cik_sdma_rlc_registers *m;
385 uint32_t sdma_base_addr;
386 uint32_t temp;
387
388 m = get_sdma_mqd(mqd);
389 sdma_base_addr = get_sdma_base_addr(m);
390
391 temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
392 temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
393 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, temp);
394
395 while (true) {
396 temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
397 if (temp & SDMA0_STATUS_REG__RB_CMD_IDLE__SHIFT)
398 break;
399 if (timeout == 0)
400 return -ETIME;
401 msleep(20);
402 timeout -= 20;
403 }
404
405 WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0);
406 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR, 0);
407 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR, 0);
408 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE, 0);
409
410 return 0;
411}
412
413static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
414 uint8_t vmid)
415{
416 uint32_t reg;
417 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
418
419 reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
420 return reg & ATC_VMID0_PASID_MAPPING__VALID_MASK;
421}
422
423static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
424 uint8_t vmid)
425{
426 uint32_t reg;
427 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
428
429 reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
430 return reg & ATC_VMID0_PASID_MAPPING__VALID_MASK;
431}
432
433static void write_vmid_invalidate_request(struct kgd_dev *kgd, uint8_t vmid)
434{
435 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
436
437 WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
438}
439
440static int kgd_address_watch_disable(struct kgd_dev *kgd)
441{
442 return 0;
443}
444
445static int kgd_address_watch_execute(struct kgd_dev *kgd,
446 unsigned int watch_point_id,
447 uint32_t cntl_val,
448 uint32_t addr_hi,
449 uint32_t addr_lo)
450{
451 return 0;
452}
453
454static int kgd_wave_control_execute(struct kgd_dev *kgd,
455 uint32_t gfx_index_val,
456 uint32_t sq_cmd)
457{
458 struct amdgpu_device *adev = get_amdgpu_device(kgd);
459 uint32_t data = 0;
460
461 mutex_lock(&adev->grbm_idx_mutex);
462
463 WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
464 WREG32(mmSQ_CMD, sq_cmd);
465
466 data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
467 INSTANCE_BROADCAST_WRITES, 1);
468 data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
469 SH_BROADCAST_WRITES, 1);
470 data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
471 SE_BROADCAST_WRITES, 1);
472
473 WREG32(mmGRBM_GFX_INDEX, data);
474 mutex_unlock(&adev->grbm_idx_mutex);
475
476 return 0;
477}
478
479static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
480 unsigned int watch_point_id,
481 unsigned int reg_offset)
482{
483 return 0;
484}
485
486static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type)
487{
488 struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
489 const union amdgpu_firmware_header *hdr;
490
491 BUG_ON(kgd == NULL);
492
493 switch (type) {
494 case KGD_ENGINE_PFP:
495 hdr = (const union amdgpu_firmware_header *)
496 adev->gfx.pfp_fw->data;
497 break;
498
499 case KGD_ENGINE_ME:
500 hdr = (const union amdgpu_firmware_header *)
501 adev->gfx.me_fw->data;
502 break;
503
504 case KGD_ENGINE_CE:
505 hdr = (const union amdgpu_firmware_header *)
506 adev->gfx.ce_fw->data;
507 break;
508
509 case KGD_ENGINE_MEC1:
510 hdr = (const union amdgpu_firmware_header *)
511 adev->gfx.mec_fw->data;
512 break;
513
514 case KGD_ENGINE_MEC2:
515 hdr = (const union amdgpu_firmware_header *)
516 adev->gfx.mec2_fw->data;
517 break;
518
519 case KGD_ENGINE_RLC:
520 hdr = (const union amdgpu_firmware_header *)
521 adev->gfx.rlc_fw->data;
522 break;
523
524 case KGD_ENGINE_SDMA1:
525 hdr = (const union amdgpu_firmware_header *)
526 adev->sdma.instance[0].fw->data;
527 break;
528
529 case KGD_ENGINE_SDMA2:
530 hdr = (const union amdgpu_firmware_header *)
531 adev->sdma.instance[1].fw->data;
532 break;
533
534 default:
535 return 0;
536 }
537
538 if (hdr == NULL)
539 return 0;
540
541 /* Only 12 bit in use*/
542 return hdr->common.ucode_version;
543}