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