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
25#include <linux/printk.h>
26#include <linux/slab.h>
27#include <linux/mm_types.h>
28
29#include "kfd_priv.h"
30#include "kfd_mqd_manager.h"
31#include "cik_regs.h"
32#include "cik_structs.h"
33#include "oss/oss_2_4_sh_mask.h"
34
35static inline struct cik_mqd *get_mqd(void *mqd)
36{
37 return (struct cik_mqd *)mqd;
38}
39
40static inline struct cik_sdma_rlc_registers *get_sdma_mqd(void *mqd)
41{
42 return (struct cik_sdma_rlc_registers *)mqd;
43}
44
45static void update_cu_mask(struct mqd_manager *mm, void *mqd,
46 struct mqd_update_info *minfo)
47{
48 struct cik_mqd *m;
49 uint32_t se_mask[4] = {0}; /* 4 is the max # of SEs */
50
51 if (!minfo || !minfo->cu_mask.ptr)
52 return;
53
54 mqd_symmetrically_map_cu_mask(mm,
55 cu_mask: minfo->cu_mask.ptr, cu_mask_count: minfo->cu_mask.count, se_mask, inst: 0);
56
57 m = get_mqd(mqd);
58 m->compute_static_thread_mgmt_se0 = se_mask[0];
59 m->compute_static_thread_mgmt_se1 = se_mask[1];
60 m->compute_static_thread_mgmt_se2 = se_mask[2];
61 m->compute_static_thread_mgmt_se3 = se_mask[3];
62
63 pr_debug("Update cu mask to %#x %#x %#x %#x\n",
64 m->compute_static_thread_mgmt_se0,
65 m->compute_static_thread_mgmt_se1,
66 m->compute_static_thread_mgmt_se2,
67 m->compute_static_thread_mgmt_se3);
68}
69
70static void set_priority(struct cik_mqd *m, struct queue_properties *q)
71{
72 m->cp_hqd_pipe_priority = pipe_priority_map[q->priority];
73 m->cp_hqd_queue_priority = q->priority;
74}
75
76static struct kfd_mem_obj *allocate_mqd(struct kfd_node *kfd,
77 struct queue_properties *q)
78{
79 struct kfd_mem_obj *mqd_mem_obj;
80
81 if (kfd_gtt_sa_allocate(node: kfd, size: sizeof(struct cik_mqd),
82 mem_obj: &mqd_mem_obj))
83 return NULL;
84
85 return mqd_mem_obj;
86}
87
88static void init_mqd(struct mqd_manager *mm, void **mqd,
89 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
90 struct queue_properties *q)
91{
92 uint64_t addr;
93 struct cik_mqd *m;
94
95 m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
96 addr = mqd_mem_obj->gpu_addr;
97
98 memset(m, 0, ALIGN(sizeof(struct cik_mqd), 256));
99
100 m->header = 0xC0310800;
101 m->compute_pipelinestat_enable = 1;
102 m->compute_static_thread_mgmt_se0 = 0xFFFFFFFF;
103 m->compute_static_thread_mgmt_se1 = 0xFFFFFFFF;
104 m->compute_static_thread_mgmt_se2 = 0xFFFFFFFF;
105 m->compute_static_thread_mgmt_se3 = 0xFFFFFFFF;
106
107 /*
108 * Make sure to use the last queue state saved on mqd when the cp
109 * reassigns the queue, so when queue is switched on/off (e.g over
110 * subscription or quantum timeout) the context will be consistent
111 */
112 m->cp_hqd_persistent_state =
113 DEFAULT_CP_HQD_PERSISTENT_STATE | PRELOAD_REQ;
114
115 m->cp_mqd_control = MQD_CONTROL_PRIV_STATE_EN;
116 m->cp_mqd_base_addr_lo = lower_32_bits(addr);
117 m->cp_mqd_base_addr_hi = upper_32_bits(addr);
118
119 m->cp_hqd_quantum = QUANTUM_EN | QUANTUM_SCALE_1MS |
120 QUANTUM_DURATION(10);
121
122 /*
123 * Pipe Priority
124 * Identifies the pipe relative priority when this queue is connected
125 * to the pipeline. The pipe priority is against the GFX pipe and HP3D.
126 * In KFD we are using a fixed pipe priority set to CS_MEDIUM.
127 * 0 = CS_LOW (typically below GFX)
128 * 1 = CS_MEDIUM (typically between HP3D and GFX
129 * 2 = CS_HIGH (typically above HP3D)
130 */
131 set_priority(m, q);
132
133 if (q->format == KFD_QUEUE_FORMAT_AQL)
134 m->cp_hqd_iq_rptr = AQL_ENABLE;
135
136 *mqd = m;
137 if (gart_addr)
138 *gart_addr = addr;
139 mm->update_mqd(mm, m, q, NULL);
140}
141
142static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
143 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
144 struct queue_properties *q)
145{
146 struct cik_sdma_rlc_registers *m;
147
148 m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
149
150 memset(m, 0, sizeof(struct cik_sdma_rlc_registers));
151
152 *mqd = m;
153 if (gart_addr)
154 *gart_addr = mqd_mem_obj->gpu_addr;
155
156 mm->update_mqd(mm, m, q, NULL);
157}
158
159static int load_mqd(struct mqd_manager *mm, void *mqd, uint32_t pipe_id,
160 uint32_t queue_id, struct queue_properties *p,
161 struct mm_struct *mms)
162{
163 /* AQL write pointer counts in 64B packets, PM4/CP counts in dwords. */
164 uint32_t wptr_shift = (p->format == KFD_QUEUE_FORMAT_AQL ? 4 : 0);
165 uint32_t wptr_mask = (uint32_t)((p->queue_size / 4) - 1);
166
167 return mm->dev->kfd2kgd->hqd_load(mm->dev->adev, mqd, pipe_id, queue_id,
168 (uint32_t __user *)p->write_ptr,
169 wptr_shift, wptr_mask, mms, 0);
170}
171
172static void __update_mqd(struct mqd_manager *mm, void *mqd,
173 struct queue_properties *q, struct mqd_update_info *minfo,
174 unsigned int atc_bit)
175{
176 struct cik_mqd *m;
177
178 m = get_mqd(mqd);
179 m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE |
180 DEFAULT_MIN_AVAIL_SIZE;
181 m->cp_hqd_ib_control = DEFAULT_MIN_IB_AVAIL_SIZE;
182 if (atc_bit) {
183 m->cp_hqd_pq_control |= PQ_ATC_EN;
184 m->cp_hqd_ib_control |= IB_ATC_EN;
185 }
186
187 /*
188 * Calculating queue size which is log base 2 of actual queue size -1
189 * dwords and another -1 for ffs
190 */
191 m->cp_hqd_pq_control |= order_base_2(q->queue_size / 4) - 1;
192 m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);
193 m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8);
194 m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
195 m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
196 m->cp_hqd_pq_doorbell_control = DOORBELL_OFFSET(q->doorbell_off);
197
198 m->cp_hqd_vmid = q->vmid;
199
200 if (q->format == KFD_QUEUE_FORMAT_AQL)
201 m->cp_hqd_pq_control |= NO_UPDATE_RPTR;
202
203 update_cu_mask(mm, mqd, minfo);
204 set_priority(m, q);
205
206 q->is_active = QUEUE_IS_ACTIVE(*q);
207}
208
209static bool check_preemption_failed(struct mqd_manager *mm, void *mqd)
210{
211 struct cik_mqd *m = (struct cik_mqd *)mqd;
212
213 return kfd_check_hiq_mqd_doorbell_id(node: mm->dev, doorbell_id: m->queue_doorbell_id0, inst: 0);
214}
215
216static void update_mqd(struct mqd_manager *mm, void *mqd,
217 struct queue_properties *q,
218 struct mqd_update_info *minfo)
219{
220 __update_mqd(mm, mqd, q, minfo, atc_bit: 0);
221}
222
223static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
224 struct queue_properties *q,
225 struct mqd_update_info *minfo)
226{
227 struct cik_sdma_rlc_registers *m;
228
229 m = get_sdma_mqd(mqd);
230 m->sdma_rlc_rb_cntl = order_base_2(q->queue_size / 4)
231 << SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT |
232 q->vmid << SDMA0_RLC0_RB_CNTL__RB_VMID__SHIFT |
233 1 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT |
234 6 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT;
235
236 m->sdma_rlc_rb_base = lower_32_bits(q->queue_address >> 8);
237 m->sdma_rlc_rb_base_hi = upper_32_bits(q->queue_address >> 8);
238 m->sdma_rlc_rb_rptr_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
239 m->sdma_rlc_rb_rptr_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
240 m->sdma_rlc_doorbell =
241 q->doorbell_off << SDMA0_RLC0_DOORBELL__OFFSET__SHIFT;
242
243 m->sdma_rlc_virtual_addr = q->sdma_vm_addr;
244
245 m->sdma_engine_id = q->sdma_engine_id;
246 m->sdma_queue_id = q->sdma_queue_id;
247
248 q->is_active = QUEUE_IS_ACTIVE(*q);
249}
250
251static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst, void *ctl_stack_dst)
252{
253 struct cik_mqd *m;
254
255 m = get_mqd(mqd);
256
257 memcpy(mqd_dst, m, sizeof(struct cik_mqd));
258}
259
260static void restore_mqd(struct mqd_manager *mm, void **mqd,
261 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
262 struct queue_properties *qp,
263 const void *mqd_src,
264 const void *ctl_stack_src, const u32 ctl_stack_size)
265{
266 uint64_t addr;
267 struct cik_mqd *m;
268
269 m = (struct cik_mqd *) mqd_mem_obj->cpu_ptr;
270 addr = mqd_mem_obj->gpu_addr;
271
272 memcpy(m, mqd_src, sizeof(*m));
273
274 *mqd = m;
275 if (gart_addr)
276 *gart_addr = addr;
277
278 m->cp_hqd_pq_doorbell_control = DOORBELL_OFFSET(qp->doorbell_off);
279
280 pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
281 m->cp_hqd_pq_doorbell_control);
282
283 qp->is_active = 0;
284}
285
286static void checkpoint_mqd_sdma(struct mqd_manager *mm,
287 void *mqd,
288 void *mqd_dst,
289 void *ctl_stack_dst)
290{
291 struct cik_sdma_rlc_registers *m;
292
293 m = get_sdma_mqd(mqd);
294
295 memcpy(mqd_dst, m, sizeof(struct cik_sdma_rlc_registers));
296}
297
298static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd,
299 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
300 struct queue_properties *qp,
301 const void *mqd_src,
302 const void *ctl_stack_src, const u32 ctl_stack_size)
303{
304 uint64_t addr;
305 struct cik_sdma_rlc_registers *m;
306
307 m = (struct cik_sdma_rlc_registers *) mqd_mem_obj->cpu_ptr;
308 addr = mqd_mem_obj->gpu_addr;
309
310 memcpy(m, mqd_src, sizeof(*m));
311
312 m->sdma_rlc_doorbell =
313 qp->doorbell_off << SDMA0_RLC0_DOORBELL__OFFSET__SHIFT;
314
315 *mqd = m;
316 if (gart_addr)
317 *gart_addr = addr;
318
319 qp->is_active = 0;
320}
321
322/*
323 * HIQ MQD Implementation, concrete implementation for HIQ MQD implementation.
324 * The HIQ queue in Kaveri is using the same MQD structure as all the user mode
325 * queues but with different initial values.
326 */
327
328static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
329 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
330 struct queue_properties *q)
331{
332 init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
333}
334
335static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
336 struct queue_properties *q,
337 struct mqd_update_info *minfo)
338{
339 struct cik_mqd *m;
340
341 m = get_mqd(mqd);
342 m->cp_hqd_pq_control = DEFAULT_RPTR_BLOCK_SIZE |
343 DEFAULT_MIN_AVAIL_SIZE |
344 PRIV_STATE |
345 KMD_QUEUE;
346
347 /*
348 * Calculating queue size which is log base 2 of actual queue
349 * size -1 dwords
350 */
351 m->cp_hqd_pq_control |= order_base_2(q->queue_size / 4) - 1;
352 m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);
353 m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8);
354 m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
355 m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
356 m->cp_hqd_pq_doorbell_control = DOORBELL_OFFSET(q->doorbell_off);
357
358 m->cp_hqd_vmid = q->vmid;
359
360 q->is_active = QUEUE_IS_ACTIVE(*q);
361
362 set_priority(m, q);
363}
364
365#if defined(CONFIG_DEBUG_FS)
366
367static int debugfs_show_mqd(struct seq_file *m, void *data)
368{
369 seq_hex_dump(m, prefix_str: " ", prefix_type: DUMP_PREFIX_OFFSET, rowsize: 32, groupsize: 4,
370 buf: data, len: sizeof(struct cik_mqd), ascii: false);
371 return 0;
372}
373
374static int debugfs_show_mqd_sdma(struct seq_file *m, void *data)
375{
376 seq_hex_dump(m, prefix_str: " ", prefix_type: DUMP_PREFIX_OFFSET, rowsize: 32, groupsize: 4,
377 buf: data, len: sizeof(struct cik_sdma_rlc_registers), ascii: false);
378 return 0;
379}
380
381#endif
382
383struct mqd_manager *mqd_manager_init_cik(enum KFD_MQD_TYPE type,
384 struct kfd_node *dev)
385{
386 struct mqd_manager *mqd;
387
388 if (WARN_ON(type >= KFD_MQD_TYPE_MAX))
389 return NULL;
390
391 mqd = kzalloc(sizeof(*mqd), GFP_KERNEL);
392 if (!mqd)
393 return NULL;
394
395 mqd->dev = dev;
396
397 switch (type) {
398 case KFD_MQD_TYPE_CP:
399 mqd->allocate_mqd = allocate_mqd;
400 mqd->init_mqd = init_mqd;
401 mqd->free_mqd = kfd_free_mqd_cp;
402 mqd->load_mqd = load_mqd;
403 mqd->update_mqd = update_mqd;
404 mqd->destroy_mqd = kfd_destroy_mqd_cp;
405 mqd->is_occupied = kfd_is_occupied_cp;
406 mqd->checkpoint_mqd = checkpoint_mqd;
407 mqd->restore_mqd = restore_mqd;
408 mqd->mqd_size = sizeof(struct cik_mqd);
409#if defined(CONFIG_DEBUG_FS)
410 mqd->debugfs_show_mqd = debugfs_show_mqd;
411#endif
412 break;
413 case KFD_MQD_TYPE_HIQ:
414 mqd->allocate_mqd = allocate_hiq_mqd;
415 mqd->init_mqd = init_mqd_hiq;
416 mqd->free_mqd = free_mqd_hiq_sdma;
417 mqd->load_mqd = load_mqd;
418 mqd->update_mqd = update_mqd_hiq;
419 mqd->destroy_mqd = kfd_destroy_mqd_cp;
420 mqd->is_occupied = kfd_is_occupied_cp;
421 mqd->mqd_size = sizeof(struct cik_mqd);
422 mqd->mqd_stride = kfd_mqd_stride;
423#if defined(CONFIG_DEBUG_FS)
424 mqd->debugfs_show_mqd = debugfs_show_mqd;
425#endif
426 mqd->check_preemption_failed = check_preemption_failed;
427 break;
428 case KFD_MQD_TYPE_DIQ:
429 mqd->allocate_mqd = allocate_mqd;
430 mqd->init_mqd = init_mqd_hiq;
431 mqd->free_mqd = kfd_free_mqd_cp;
432 mqd->load_mqd = load_mqd;
433 mqd->update_mqd = update_mqd_hiq;
434 mqd->destroy_mqd = kfd_destroy_mqd_cp;
435 mqd->is_occupied = kfd_is_occupied_cp;
436 mqd->mqd_size = sizeof(struct cik_mqd);
437 mqd->mqd_stride = kfd_mqd_stride;
438#if defined(CONFIG_DEBUG_FS)
439 mqd->debugfs_show_mqd = debugfs_show_mqd;
440#endif
441 break;
442 case KFD_MQD_TYPE_SDMA:
443 mqd->allocate_mqd = allocate_sdma_mqd;
444 mqd->init_mqd = init_mqd_sdma;
445 mqd->free_mqd = free_mqd_hiq_sdma;
446 mqd->load_mqd = kfd_load_mqd_sdma;
447 mqd->update_mqd = update_mqd_sdma;
448 mqd->destroy_mqd = kfd_destroy_mqd_sdma;
449 mqd->is_occupied = kfd_is_occupied_sdma;
450 mqd->checkpoint_mqd = checkpoint_mqd_sdma;
451 mqd->restore_mqd = restore_mqd_sdma;
452 mqd->mqd_size = sizeof(struct cik_sdma_rlc_registers);
453 mqd->mqd_stride = kfd_mqd_stride;
454#if defined(CONFIG_DEBUG_FS)
455 mqd->debugfs_show_mqd = debugfs_show_mqd_sdma;
456#endif
457 break;
458 default:
459 kfree(objp: mqd);
460 return NULL;
461 }
462
463 return mqd;
464}
465

source code of linux/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c