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1/*
2 * Copyright 2017 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 * dc_helper.c
25 *
26 * Created on: Aug 30, 2016
27 * Author: agrodzov
28 */
29
30#include <linux/delay.h>
31#include <linux/stdarg.h>
32
33#include "dm_services.h"
34
35#include "dc.h"
36#include "dc_dmub_srv.h"
37#include "reg_helper.h"
38
39#define DC_LOGGER \
40 ctx->logger
41
42static inline void submit_dmub_read_modify_write(
43 struct dc_reg_helper_state *offload,
44 const struct dc_context *ctx)
45{
46 struct dmub_rb_cmd_read_modify_write *cmd_buf = &offload->cmd_data.read_modify_write;
47
48 offload->should_burst_write =
49 (offload->same_addr_count == (DMUB_READ_MODIFY_WRITE_SEQ__MAX - 1));
50 cmd_buf->header.payload_bytes =
51 sizeof(struct dmub_cmd_read_modify_write_sequence) * offload->reg_seq_count;
52
53 dc_wake_and_execute_dmub_cmd(ctx, &offload->cmd_data, DM_DMUB_WAIT_TYPE_NO_WAIT);
54
55 memset(cmd_buf, 0, sizeof(*cmd_buf));
56
57 offload->reg_seq_count = 0;
58 offload->same_addr_count = 0;
59}
60
61static inline void submit_dmub_burst_write(
62 struct dc_reg_helper_state *offload,
63 const struct dc_context *ctx)
64{
65 struct dmub_rb_cmd_burst_write *cmd_buf = &offload->cmd_data.burst_write;
66
67 cmd_buf->header.payload_bytes =
68 sizeof(uint32_t) * offload->reg_seq_count;
69
70 dc_wake_and_execute_dmub_cmd(ctx, &offload->cmd_data, DM_DMUB_WAIT_TYPE_NO_WAIT);
71
72 memset(cmd_buf, 0, sizeof(*cmd_buf));
73
74 offload->reg_seq_count = 0;
75}
76
77static inline void submit_dmub_reg_wait(
78 struct dc_reg_helper_state *offload,
79 const struct dc_context *ctx)
80{
81 struct dmub_rb_cmd_reg_wait *cmd_buf = &offload->cmd_data.reg_wait;
82
83 dc_wake_and_execute_dmub_cmd(ctx, &offload->cmd_data, DM_DMUB_WAIT_TYPE_NO_WAIT);
84
85 memset(cmd_buf, 0, sizeof(*cmd_buf));
86 offload->reg_seq_count = 0;
87}
88
89struct dc_reg_value_masks {
90 uint32_t value;
91 uint32_t mask;
92};
93
94struct dc_reg_sequence {
95 uint32_t addr;
96 struct dc_reg_value_masks value_masks;
97};
98
99static inline void set_reg_field_value_masks(
100 struct dc_reg_value_masks *field_value_mask,
101 uint32_t value,
102 uint32_t mask,
103 uint8_t shift)
104{
105 ASSERT(mask != 0);
106
107 field_value_mask->value = (field_value_mask->value & ~mask) | (mask & (value << shift));
108 field_value_mask->mask = field_value_mask->mask | mask;
109}
110
111static void set_reg_field_values(struct dc_reg_value_masks *field_value_mask,
112 uint32_t addr, int n,
113 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
114 va_list ap)
115{
116 uint32_t shift, mask, field_value;
117 int i = 1;
118
119 /* gather all bits value/mask getting updated in this register */
120 set_reg_field_value_masks(field_value_mask,
121 field_value1, mask1, shift1);
122
123 while (i < n) {
124 shift = va_arg(ap, uint32_t);
125 mask = va_arg(ap, uint32_t);
126 field_value = va_arg(ap, uint32_t);
127
128 set_reg_field_value_masks(field_value_mask,
129 field_value, mask, shift);
130 i++;
131 }
132}
133
134static void dmub_flush_buffer_execute(
135 struct dc_reg_helper_state *offload,
136 const struct dc_context *ctx)
137{
138 submit_dmub_read_modify_write(offload, ctx);
139}
140
141static void dmub_flush_burst_write_buffer_execute(
142 struct dc_reg_helper_state *offload,
143 const struct dc_context *ctx)
144{
145 submit_dmub_burst_write(offload, ctx);
146}
147
148static bool dmub_reg_value_burst_set_pack(const struct dc_context *ctx, uint32_t addr,
149 uint32_t reg_val)
150{
151 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
152 struct dmub_rb_cmd_burst_write *cmd_buf = &offload->cmd_data.burst_write;
153
154 /* flush command if buffer is full */
155 if (offload->reg_seq_count == DMUB_BURST_WRITE_VALUES__MAX)
156 dmub_flush_burst_write_buffer_execute(offload, ctx);
157
158 if (offload->cmd_data.cmd_common.header.type == DMUB_CMD__REG_SEQ_BURST_WRITE &&
159 addr != cmd_buf->addr) {
160 dmub_flush_burst_write_buffer_execute(offload, ctx);
161 return false;
162 }
163
164 cmd_buf->header.type = DMUB_CMD__REG_SEQ_BURST_WRITE;
165 cmd_buf->header.sub_type = 0;
166 cmd_buf->addr = addr;
167 cmd_buf->write_values[offload->reg_seq_count] = reg_val;
168 offload->reg_seq_count++;
169
170 return true;
171}
172
173static uint32_t dmub_reg_value_pack(const struct dc_context *ctx, uint32_t addr,
174 struct dc_reg_value_masks *field_value_mask)
175{
176 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
177 struct dmub_rb_cmd_read_modify_write *cmd_buf = &offload->cmd_data.read_modify_write;
178 struct dmub_cmd_read_modify_write_sequence *seq;
179
180 /* flush command if buffer is full */
181 if (offload->cmd_data.cmd_common.header.type != DMUB_CMD__REG_SEQ_BURST_WRITE &&
182 offload->reg_seq_count == DMUB_READ_MODIFY_WRITE_SEQ__MAX)
183 dmub_flush_buffer_execute(offload, ctx);
184
185 if (offload->should_burst_write) {
186 if (dmub_reg_value_burst_set_pack(ctx, addr, field_value_mask->value))
187 return field_value_mask->value;
188 else
189 offload->should_burst_write = false;
190 }
191
192 /* pack commands */
193 cmd_buf->header.type = DMUB_CMD__REG_SEQ_READ_MODIFY_WRITE;
194 cmd_buf->header.sub_type = 0;
195 seq = &cmd_buf->seq[offload->reg_seq_count];
196
197 if (offload->reg_seq_count) {
198 if (cmd_buf->seq[offload->reg_seq_count - 1].addr == addr)
199 offload->same_addr_count++;
200 else
201 offload->same_addr_count = 0;
202 }
203
204 seq->addr = addr;
205 seq->modify_mask = field_value_mask->mask;
206 seq->modify_value = field_value_mask->value;
207 offload->reg_seq_count++;
208
209 return field_value_mask->value;
210}
211
212static void dmub_reg_wait_done_pack(const struct dc_context *ctx, uint32_t addr,
213 uint32_t mask, uint32_t shift, uint32_t condition_value, uint32_t time_out_us)
214{
215 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
216 struct dmub_rb_cmd_reg_wait *cmd_buf = &offload->cmd_data.reg_wait;
217
218 cmd_buf->header.type = DMUB_CMD__REG_REG_WAIT;
219 cmd_buf->header.sub_type = 0;
220 cmd_buf->reg_wait.addr = addr;
221 cmd_buf->reg_wait.condition_field_value = mask & (condition_value << shift);
222 cmd_buf->reg_wait.mask = mask;
223 cmd_buf->reg_wait.time_out_us = time_out_us;
224}
225
226uint32_t generic_reg_update_ex(const struct dc_context *ctx,
227 uint32_t addr, int n,
228 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
229 ...)
230{
231 struct dc_reg_value_masks field_value_mask = {0};
232 uint32_t reg_val;
233 va_list ap;
234
235 va_start(ap, field_value1);
236
237 set_reg_field_values(&field_value_mask, addr, n, shift1, mask1,
238 field_value1, ap);
239
240 va_end(ap);
241
242 if (ctx->dmub_srv &&
243 ctx->dmub_srv->reg_helper_offload.gather_in_progress)
244 return dmub_reg_value_pack(ctx, addr, &field_value_mask);
245 /* todo: return void so we can decouple code running in driver from register states */
246
247 /* mmio write directly */
248 reg_val = dm_read_reg(ctx, addr);
249 reg_val = (reg_val & ~field_value_mask.mask) | field_value_mask.value;
250 dm_write_reg(ctx, addr, reg_val);
251 return reg_val;
252}
253
254uint32_t generic_reg_set_ex(const struct dc_context *ctx,
255 uint32_t addr, uint32_t reg_val, int n,
256 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
257 ...)
258{
259 struct dc_reg_value_masks field_value_mask = {0};
260 va_list ap;
261
262 va_start(ap, field_value1);
263
264 set_reg_field_values(&field_value_mask, addr, n, shift1, mask1,
265 field_value1, ap);
266
267 va_end(ap);
268
269
270 /* mmio write directly */
271 reg_val = (reg_val & ~field_value_mask.mask) | field_value_mask.value;
272
273 if (ctx->dmub_srv &&
274 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
275 return dmub_reg_value_burst_set_pack(ctx, addr, reg_val);
276 /* todo: return void so we can decouple code running in driver from register states */
277 }
278
279 dm_write_reg(ctx, addr, reg_val);
280 return reg_val;
281}
282
283uint32_t generic_reg_get(const struct dc_context *ctx, uint32_t addr,
284 uint8_t shift, uint32_t mask, uint32_t *field_value)
285{
286 uint32_t reg_val = dm_read_reg(ctx, addr);
287 *field_value = get_reg_field_value_ex(reg_val, mask, shift);
288 return reg_val;
289}
290
291uint32_t generic_reg_get2(const struct dc_context *ctx, uint32_t addr,
292 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
293 uint8_t shift2, uint32_t mask2, uint32_t *field_value2)
294{
295 uint32_t reg_val = dm_read_reg(ctx, addr);
296 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
297 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
298 return reg_val;
299}
300
301uint32_t generic_reg_get3(const struct dc_context *ctx, uint32_t addr,
302 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
303 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
304 uint8_t shift3, uint32_t mask3, uint32_t *field_value3)
305{
306 uint32_t reg_val = dm_read_reg(ctx, addr);
307 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
308 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
309 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
310 return reg_val;
311}
312
313uint32_t generic_reg_get4(const struct dc_context *ctx, uint32_t addr,
314 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
315 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
316 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
317 uint8_t shift4, uint32_t mask4, uint32_t *field_value4)
318{
319 uint32_t reg_val = dm_read_reg(ctx, addr);
320 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
321 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
322 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
323 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
324 return reg_val;
325}
326
327uint32_t generic_reg_get5(const struct dc_context *ctx, uint32_t addr,
328 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
329 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
330 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
331 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
332 uint8_t shift5, uint32_t mask5, uint32_t *field_value5)
333{
334 uint32_t reg_val = dm_read_reg(ctx, addr);
335 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
336 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
337 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
338 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
339 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
340 return reg_val;
341}
342
343uint32_t generic_reg_get6(const struct dc_context *ctx, uint32_t addr,
344 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
345 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
346 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
347 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
348 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
349 uint8_t shift6, uint32_t mask6, uint32_t *field_value6)
350{
351 uint32_t reg_val = dm_read_reg(ctx, addr);
352 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
353 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
354 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
355 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
356 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
357 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
358 return reg_val;
359}
360
361uint32_t generic_reg_get7(const struct dc_context *ctx, uint32_t addr,
362 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
363 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
364 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
365 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
366 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
367 uint8_t shift6, uint32_t mask6, uint32_t *field_value6,
368 uint8_t shift7, uint32_t mask7, uint32_t *field_value7)
369{
370 uint32_t reg_val = dm_read_reg(ctx, addr);
371 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
372 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
373 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
374 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
375 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
376 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
377 *field_value7 = get_reg_field_value_ex(reg_val, mask7, shift7);
378 return reg_val;
379}
380
381uint32_t generic_reg_get8(const struct dc_context *ctx, uint32_t addr,
382 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
383 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
384 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
385 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
386 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
387 uint8_t shift6, uint32_t mask6, uint32_t *field_value6,
388 uint8_t shift7, uint32_t mask7, uint32_t *field_value7,
389 uint8_t shift8, uint32_t mask8, uint32_t *field_value8)
390{
391 uint32_t reg_val = dm_read_reg(ctx, addr);
392 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
393 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
394 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
395 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
396 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
397 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
398 *field_value7 = get_reg_field_value_ex(reg_val, mask7, shift7);
399 *field_value8 = get_reg_field_value_ex(reg_val, mask8, shift8);
400 return reg_val;
401}
402/* note: va version of this is pretty bad idea, since there is a output parameter pass by pointer
403 * compiler won't be able to check for size match and is prone to stack corruption type of bugs
404
405uint32_t generic_reg_get(const struct dc_context *ctx,
406 uint32_t addr, int n, ...)
407{
408 uint32_t shift, mask;
409 uint32_t *field_value;
410 uint32_t reg_val;
411 int i = 0;
412
413 reg_val = dm_read_reg(ctx, addr);
414
415 va_list ap;
416 va_start(ap, n);
417
418 while (i < n) {
419 shift = va_arg(ap, uint32_t);
420 mask = va_arg(ap, uint32_t);
421 field_value = va_arg(ap, uint32_t *);
422
423 *field_value = get_reg_field_value_ex(reg_val, mask, shift);
424 i++;
425 }
426
427 va_end(ap);
428
429 return reg_val;
430}
431*/
432
433void generic_reg_wait(const struct dc_context *ctx,
434 uint32_t addr, uint32_t shift, uint32_t mask, uint32_t condition_value,
435 unsigned int delay_between_poll_us, unsigned int time_out_num_tries,
436 const char *func_name, int line)
437{
438 uint32_t field_value;
439 uint32_t reg_val;
440 int i;
441
442 if (ctx->dmub_srv &&
443 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
444 dmub_reg_wait_done_pack(ctx, addr, mask, shift, condition_value,
445 delay_between_poll_us * time_out_num_tries);
446 return;
447 }
448
449 /*
450 * Something is terribly wrong if time out is > 3000ms.
451 * 3000ms is the maximum time needed for SMU to pass values back.
452 * This value comes from experiments.
453 *
454 */
455 ASSERT(delay_between_poll_us * time_out_num_tries <= 3000000);
456
457 for (i = 0; i <= time_out_num_tries; i++) {
458 if (i) {
459 if (delay_between_poll_us >= 1000)
460 msleep(delay_between_poll_us/1000);
461 else if (delay_between_poll_us > 0)
462 udelay(delay_between_poll_us);
463 }
464
465 reg_val = dm_read_reg(ctx, addr);
466
467 field_value = get_reg_field_value_ex(reg_val, mask, shift);
468
469 if (field_value == condition_value) {
470 if (i * delay_between_poll_us > 1000)
471 DC_LOG_DC("REG_WAIT taking a while: %dms in %s line:%d\n",
472 delay_between_poll_us * i / 1000,
473 func_name, line);
474 return;
475 }
476 }
477
478 DC_LOG_WARNING("REG_WAIT timeout %dus * %d tries - %s line:%d\n",
479 delay_between_poll_us, time_out_num_tries,
480 func_name, line);
481
482 BREAK_TO_DEBUGGER();
483}
484
485void generic_write_indirect_reg(const struct dc_context *ctx,
486 uint32_t addr_index, uint32_t addr_data,
487 uint32_t index, uint32_t data)
488{
489 dm_write_reg(ctx, addr_index, index);
490 dm_write_reg(ctx, addr_data, data);
491}
492
493uint32_t generic_read_indirect_reg(const struct dc_context *ctx,
494 uint32_t addr_index, uint32_t addr_data,
495 uint32_t index)
496{
497 uint32_t value = 0;
498
499 // when reg read, there should not be any offload.
500 if (ctx->dmub_srv &&
501 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
502 ASSERT(false);
503 }
504
505 dm_write_reg(ctx, addr_index, index);
506 value = dm_read_reg(ctx, addr_data);
507
508 return value;
509}
510
511uint32_t generic_indirect_reg_get(const struct dc_context *ctx,
512 uint32_t addr_index, uint32_t addr_data,
513 uint32_t index, int n,
514 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
515 ...)
516{
517 uint32_t shift, mask, *field_value;
518 uint32_t value = 0;
519 int i = 1;
520
521 va_list ap;
522
523 va_start(ap, field_value1);
524
525 value = generic_read_indirect_reg(ctx, addr_index, addr_data, index);
526 *field_value1 = get_reg_field_value_ex(value, mask1, shift1);
527
528 while (i < n) {
529 shift = va_arg(ap, uint32_t);
530 mask = va_arg(ap, uint32_t);
531 field_value = va_arg(ap, uint32_t *);
532
533 *field_value = get_reg_field_value_ex(value, mask, shift);
534 i++;
535 }
536
537 va_end(ap);
538
539 return value;
540}
541
542uint32_t generic_indirect_reg_update_ex(const struct dc_context *ctx,
543 uint32_t addr_index, uint32_t addr_data,
544 uint32_t index, uint32_t reg_val, int n,
545 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
546 ...)
547{
548 uint32_t shift, mask, field_value;
549 int i = 1;
550
551 va_list ap;
552
553 va_start(ap, field_value1);
554
555 reg_val = set_reg_field_value_ex(reg_val, field_value1, mask1, shift1);
556
557 while (i < n) {
558 shift = va_arg(ap, uint32_t);
559 mask = va_arg(ap, uint32_t);
560 field_value = va_arg(ap, uint32_t);
561
562 reg_val = set_reg_field_value_ex(reg_val, field_value, mask, shift);
563 i++;
564 }
565
566 generic_write_indirect_reg(ctx, addr_index, addr_data, index, reg_val);
567 va_end(ap);
568
569 return reg_val;
570}
571
572
573uint32_t generic_indirect_reg_update_ex_sync(const struct dc_context *ctx,
574 uint32_t index, uint32_t reg_val, int n,
575 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
576 ...)
577{
578 uint32_t shift, mask, field_value;
579 int i = 1;
580
581 va_list ap;
582
583 va_start(ap, field_value1);
584
585 reg_val = set_reg_field_value_ex(reg_val, field_value1, mask1, shift1);
586
587 while (i < n) {
588 shift = va_arg(ap, uint32_t);
589 mask = va_arg(ap, uint32_t);
590 field_value = va_arg(ap, uint32_t);
591
592 reg_val = set_reg_field_value_ex(reg_val, field_value, mask, shift);
593 i++;
594 }
595
596 dm_write_index_reg(ctx, CGS_IND_REG__PCIE, index, reg_val);
597 va_end(ap);
598
599 return reg_val;
600}
601
602uint32_t generic_indirect_reg_get_sync(const struct dc_context *ctx,
603 uint32_t index, int n,
604 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
605 ...)
606{
607 uint32_t shift, mask, *field_value;
608 uint32_t value = 0;
609 int i = 1;
610
611 va_list ap;
612
613 va_start(ap, field_value1);
614
615 value = dm_read_index_reg(ctx, CGS_IND_REG__PCIE, index);
616 *field_value1 = get_reg_field_value_ex(value, mask1, shift1);
617
618 while (i < n) {
619 shift = va_arg(ap, uint32_t);
620 mask = va_arg(ap, uint32_t);
621 field_value = va_arg(ap, uint32_t *);
622
623 *field_value = get_reg_field_value_ex(value, mask, shift);
624 i++;
625 }
626
627 va_end(ap);
628
629 return value;
630}
631
632void reg_sequence_start_gather(const struct dc_context *ctx)
633{
634 /* if reg sequence is supported and enabled, set flag to
635 * indicate we want to have REG_SET, REG_UPDATE macro build
636 * reg sequence command buffer rather than MMIO directly.
637 */
638
639 if (ctx->dmub_srv && ctx->dc->debug.dmub_offload_enabled) {
640 struct dc_reg_helper_state *offload =
641 &ctx->dmub_srv->reg_helper_offload;
642
643 /* caller sequence mismatch. need to debug caller. offload will not work!!! */
644 ASSERT(!offload->gather_in_progress);
645
646 offload->gather_in_progress = true;
647 }
648}
649
650void reg_sequence_start_execute(const struct dc_context *ctx)
651{
652 struct dc_reg_helper_state *offload;
653
654 if (!ctx->dmub_srv)
655 return;
656
657 offload = &ctx->dmub_srv->reg_helper_offload;
658
659 if (offload && offload->gather_in_progress) {
660 offload->gather_in_progress = false;
661 offload->should_burst_write = false;
662 switch (offload->cmd_data.cmd_common.header.type) {
663 case DMUB_CMD__REG_SEQ_READ_MODIFY_WRITE:
664 submit_dmub_read_modify_write(offload, ctx);
665 break;
666 case DMUB_CMD__REG_REG_WAIT:
667 submit_dmub_reg_wait(offload, ctx);
668 break;
669 case DMUB_CMD__REG_SEQ_BURST_WRITE:
670 submit_dmub_burst_write(offload, ctx);
671 break;
672 default:
673 return;
674 }
675 }
676}
677
678void reg_sequence_wait_done(const struct dc_context *ctx)
679{
680 /* callback to DM to poll for last submission done*/
681 struct dc_reg_helper_state *offload;
682
683 if (!ctx->dmub_srv)
684 return;
685
686 offload = &ctx->dmub_srv->reg_helper_offload;
687
688 if (offload &&
689 ctx->dc->debug.dmub_offload_enabled &&
690 !ctx->dc->debug.dmcub_emulation) {
691 dc_dmub_srv_wait_idle(ctx->dmub_srv);
692 }
693}
694
695char *dce_version_to_string(const int version)
696{
697 switch (version) {
698 case DCE_VERSION_8_0:
699 return "DCE 8.0";
700 case DCE_VERSION_8_1:
701 return "DCE 8.1";
702 case DCE_VERSION_8_3:
703 return "DCE 8.3";
704 case DCE_VERSION_10_0:
705 return "DCE 10.0";
706 case DCE_VERSION_11_0:
707 return "DCE 11.0";
708 case DCE_VERSION_11_2:
709 return "DCE 11.2";
710 case DCE_VERSION_11_22:
711 return "DCE 11.22";
712 case DCE_VERSION_12_0:
713 return "DCE 12.0";
714 case DCE_VERSION_12_1:
715 return "DCE 12.1";
716 case DCN_VERSION_1_0:
717 return "DCN 1.0";
718 case DCN_VERSION_1_01:
719 return "DCN 1.0.1";
720 case DCN_VERSION_2_0:
721 return "DCN 2.0";
722 case DCN_VERSION_2_1:
723 return "DCN 2.1";
724 case DCN_VERSION_2_01:
725 return "DCN 2.0.1";
726 case DCN_VERSION_3_0:
727 return "DCN 3.0";
728 case DCN_VERSION_3_01:
729 return "DCN 3.0.1";
730 case DCN_VERSION_3_02:
731 return "DCN 3.0.2";
732 case DCN_VERSION_3_03:
733 return "DCN 3.0.3";
734 case DCN_VERSION_3_1:
735 return "DCN 3.1";
736 case DCN_VERSION_3_14:
737 return "DCN 3.1.4";
738 case DCN_VERSION_3_15:
739 return "DCN 3.1.5";
740 case DCN_VERSION_3_16:
741 return "DCN 3.1.6";
742 case DCN_VERSION_3_2:
743 return "DCN 3.2";
744 case DCN_VERSION_3_21:
745 return "DCN 3.2.1";
746 case DCN_VERSION_3_5:
747 return "DCN 3.5";
748 case DCN_VERSION_3_51:
749 return "DCN 3.5.1";
750 default:
751 return "Unknown";
752 }
753}
1/*
2 * Copyright 2017 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 * dc_helper.c
25 *
26 * Created on: Aug 30, 2016
27 * Author: agrodzov
28 */
29
30#include <linux/delay.h>
31#include <linux/stdarg.h>
32
33#include "dm_services.h"
34
35#include "dc.h"
36#include "dc_dmub_srv.h"
37#include "reg_helper.h"
38
39static inline void submit_dmub_read_modify_write(
40 struct dc_reg_helper_state *offload,
41 const struct dc_context *ctx)
42{
43 struct dmub_rb_cmd_read_modify_write *cmd_buf = &offload->cmd_data.read_modify_write;
44 bool gather = false;
45
46 offload->should_burst_write =
47 (offload->same_addr_count == (DMUB_READ_MODIFY_WRITE_SEQ__MAX - 1));
48 cmd_buf->header.payload_bytes =
49 sizeof(struct dmub_cmd_read_modify_write_sequence) * offload->reg_seq_count;
50
51 gather = ctx->dmub_srv->reg_helper_offload.gather_in_progress;
52 ctx->dmub_srv->reg_helper_offload.gather_in_progress = false;
53
54 dc_dmub_srv_cmd_queue(ctx->dmub_srv, &offload->cmd_data);
55
56 ctx->dmub_srv->reg_helper_offload.gather_in_progress = gather;
57
58 memset(cmd_buf, 0, sizeof(*cmd_buf));
59
60 offload->reg_seq_count = 0;
61 offload->same_addr_count = 0;
62}
63
64static inline void submit_dmub_burst_write(
65 struct dc_reg_helper_state *offload,
66 const struct dc_context *ctx)
67{
68 struct dmub_rb_cmd_burst_write *cmd_buf = &offload->cmd_data.burst_write;
69 bool gather = false;
70
71 cmd_buf->header.payload_bytes =
72 sizeof(uint32_t) * offload->reg_seq_count;
73
74 gather = ctx->dmub_srv->reg_helper_offload.gather_in_progress;
75 ctx->dmub_srv->reg_helper_offload.gather_in_progress = false;
76
77 dc_dmub_srv_cmd_queue(ctx->dmub_srv, &offload->cmd_data);
78
79 ctx->dmub_srv->reg_helper_offload.gather_in_progress = gather;
80
81 memset(cmd_buf, 0, sizeof(*cmd_buf));
82
83 offload->reg_seq_count = 0;
84}
85
86static inline void submit_dmub_reg_wait(
87 struct dc_reg_helper_state *offload,
88 const struct dc_context *ctx)
89{
90 struct dmub_rb_cmd_reg_wait *cmd_buf = &offload->cmd_data.reg_wait;
91 bool gather = false;
92
93 gather = ctx->dmub_srv->reg_helper_offload.gather_in_progress;
94 ctx->dmub_srv->reg_helper_offload.gather_in_progress = false;
95
96 dc_dmub_srv_cmd_queue(ctx->dmub_srv, &offload->cmd_data);
97
98 memset(cmd_buf, 0, sizeof(*cmd_buf));
99 offload->reg_seq_count = 0;
100
101 ctx->dmub_srv->reg_helper_offload.gather_in_progress = gather;
102}
103
104struct dc_reg_value_masks {
105 uint32_t value;
106 uint32_t mask;
107};
108
109struct dc_reg_sequence {
110 uint32_t addr;
111 struct dc_reg_value_masks value_masks;
112};
113
114static inline void set_reg_field_value_masks(
115 struct dc_reg_value_masks *field_value_mask,
116 uint32_t value,
117 uint32_t mask,
118 uint8_t shift)
119{
120 ASSERT(mask != 0);
121
122 field_value_mask->value = (field_value_mask->value & ~mask) | (mask & (value << shift));
123 field_value_mask->mask = field_value_mask->mask | mask;
124}
125
126static void set_reg_field_values(struct dc_reg_value_masks *field_value_mask,
127 uint32_t addr, int n,
128 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
129 va_list ap)
130{
131 uint32_t shift, mask, field_value;
132 int i = 1;
133
134 /* gather all bits value/mask getting updated in this register */
135 set_reg_field_value_masks(field_value_mask,
136 field_value1, mask1, shift1);
137
138 while (i < n) {
139 shift = va_arg(ap, uint32_t);
140 mask = va_arg(ap, uint32_t);
141 field_value = va_arg(ap, uint32_t);
142
143 set_reg_field_value_masks(field_value_mask,
144 field_value, mask, shift);
145 i++;
146 }
147}
148
149static void dmub_flush_buffer_execute(
150 struct dc_reg_helper_state *offload,
151 const struct dc_context *ctx)
152{
153 submit_dmub_read_modify_write(offload, ctx);
154 dc_dmub_srv_cmd_execute(ctx->dmub_srv);
155}
156
157static void dmub_flush_burst_write_buffer_execute(
158 struct dc_reg_helper_state *offload,
159 const struct dc_context *ctx)
160{
161 submit_dmub_burst_write(offload, ctx);
162 dc_dmub_srv_cmd_execute(ctx->dmub_srv);
163}
164
165static bool dmub_reg_value_burst_set_pack(const struct dc_context *ctx, uint32_t addr,
166 uint32_t reg_val)
167{
168 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
169 struct dmub_rb_cmd_burst_write *cmd_buf = &offload->cmd_data.burst_write;
170
171 /* flush command if buffer is full */
172 if (offload->reg_seq_count == DMUB_BURST_WRITE_VALUES__MAX)
173 dmub_flush_burst_write_buffer_execute(offload, ctx);
174
175 if (offload->cmd_data.cmd_common.header.type == DMUB_CMD__REG_SEQ_BURST_WRITE &&
176 addr != cmd_buf->addr) {
177 dmub_flush_burst_write_buffer_execute(offload, ctx);
178 return false;
179 }
180
181 cmd_buf->header.type = DMUB_CMD__REG_SEQ_BURST_WRITE;
182 cmd_buf->header.sub_type = 0;
183 cmd_buf->addr = addr;
184 cmd_buf->write_values[offload->reg_seq_count] = reg_val;
185 offload->reg_seq_count++;
186
187 return true;
188}
189
190static uint32_t dmub_reg_value_pack(const struct dc_context *ctx, uint32_t addr,
191 struct dc_reg_value_masks *field_value_mask)
192{
193 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
194 struct dmub_rb_cmd_read_modify_write *cmd_buf = &offload->cmd_data.read_modify_write;
195 struct dmub_cmd_read_modify_write_sequence *seq;
196
197 /* flush command if buffer is full */
198 if (offload->cmd_data.cmd_common.header.type != DMUB_CMD__REG_SEQ_BURST_WRITE &&
199 offload->reg_seq_count == DMUB_READ_MODIFY_WRITE_SEQ__MAX)
200 dmub_flush_buffer_execute(offload, ctx);
201
202 if (offload->should_burst_write) {
203 if (dmub_reg_value_burst_set_pack(ctx, addr, field_value_mask->value))
204 return field_value_mask->value;
205 else
206 offload->should_burst_write = false;
207 }
208
209 /* pack commands */
210 cmd_buf->header.type = DMUB_CMD__REG_SEQ_READ_MODIFY_WRITE;
211 cmd_buf->header.sub_type = 0;
212 seq = &cmd_buf->seq[offload->reg_seq_count];
213
214 if (offload->reg_seq_count) {
215 if (cmd_buf->seq[offload->reg_seq_count - 1].addr == addr)
216 offload->same_addr_count++;
217 else
218 offload->same_addr_count = 0;
219 }
220
221 seq->addr = addr;
222 seq->modify_mask = field_value_mask->mask;
223 seq->modify_value = field_value_mask->value;
224 offload->reg_seq_count++;
225
226 return field_value_mask->value;
227}
228
229static void dmub_reg_wait_done_pack(const struct dc_context *ctx, uint32_t addr,
230 uint32_t mask, uint32_t shift, uint32_t condition_value, uint32_t time_out_us)
231{
232 struct dc_reg_helper_state *offload = &ctx->dmub_srv->reg_helper_offload;
233 struct dmub_rb_cmd_reg_wait *cmd_buf = &offload->cmd_data.reg_wait;
234
235 cmd_buf->header.type = DMUB_CMD__REG_REG_WAIT;
236 cmd_buf->header.sub_type = 0;
237 cmd_buf->reg_wait.addr = addr;
238 cmd_buf->reg_wait.condition_field_value = mask & (condition_value << shift);
239 cmd_buf->reg_wait.mask = mask;
240 cmd_buf->reg_wait.time_out_us = time_out_us;
241}
242
243uint32_t generic_reg_update_ex(const struct dc_context *ctx,
244 uint32_t addr, int n,
245 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
246 ...)
247{
248 struct dc_reg_value_masks field_value_mask = {0};
249 uint32_t reg_val;
250 va_list ap;
251
252 va_start(ap, field_value1);
253
254 set_reg_field_values(&field_value_mask, addr, n, shift1, mask1,
255 field_value1, ap);
256
257 va_end(ap);
258
259 if (ctx->dmub_srv &&
260 ctx->dmub_srv->reg_helper_offload.gather_in_progress)
261 return dmub_reg_value_pack(ctx, addr, &field_value_mask);
262 /* todo: return void so we can decouple code running in driver from register states */
263
264 /* mmio write directly */
265 reg_val = dm_read_reg(ctx, addr);
266 reg_val = (reg_val & ~field_value_mask.mask) | field_value_mask.value;
267 dm_write_reg(ctx, addr, reg_val);
268 return reg_val;
269}
270
271uint32_t generic_reg_set_ex(const struct dc_context *ctx,
272 uint32_t addr, uint32_t reg_val, int n,
273 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
274 ...)
275{
276 struct dc_reg_value_masks field_value_mask = {0};
277 va_list ap;
278
279 va_start(ap, field_value1);
280
281 set_reg_field_values(&field_value_mask, addr, n, shift1, mask1,
282 field_value1, ap);
283
284 va_end(ap);
285
286
287 /* mmio write directly */
288 reg_val = (reg_val & ~field_value_mask.mask) | field_value_mask.value;
289
290 if (ctx->dmub_srv &&
291 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
292 return dmub_reg_value_burst_set_pack(ctx, addr, reg_val);
293 /* todo: return void so we can decouple code running in driver from register states */
294 }
295
296 dm_write_reg(ctx, addr, reg_val);
297 return reg_val;
298}
299
300uint32_t generic_reg_get(const struct dc_context *ctx, uint32_t addr,
301 uint8_t shift, uint32_t mask, uint32_t *field_value)
302{
303 uint32_t reg_val = dm_read_reg(ctx, addr);
304 *field_value = get_reg_field_value_ex(reg_val, mask, shift);
305 return reg_val;
306}
307
308uint32_t generic_reg_get2(const struct dc_context *ctx, uint32_t addr,
309 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
310 uint8_t shift2, uint32_t mask2, uint32_t *field_value2)
311{
312 uint32_t reg_val = dm_read_reg(ctx, addr);
313 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
314 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
315 return reg_val;
316}
317
318uint32_t generic_reg_get3(const struct dc_context *ctx, uint32_t addr,
319 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
320 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
321 uint8_t shift3, uint32_t mask3, uint32_t *field_value3)
322{
323 uint32_t reg_val = dm_read_reg(ctx, addr);
324 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
325 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
326 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
327 return reg_val;
328}
329
330uint32_t generic_reg_get4(const struct dc_context *ctx, uint32_t addr,
331 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
332 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
333 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
334 uint8_t shift4, uint32_t mask4, uint32_t *field_value4)
335{
336 uint32_t reg_val = dm_read_reg(ctx, addr);
337 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
338 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
339 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
340 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
341 return reg_val;
342}
343
344uint32_t generic_reg_get5(const struct dc_context *ctx, uint32_t addr,
345 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
346 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
347 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
348 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
349 uint8_t shift5, uint32_t mask5, uint32_t *field_value5)
350{
351 uint32_t reg_val = dm_read_reg(ctx, addr);
352 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
353 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
354 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
355 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
356 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
357 return reg_val;
358}
359
360uint32_t generic_reg_get6(const struct dc_context *ctx, uint32_t addr,
361 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
362 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
363 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
364 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
365 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
366 uint8_t shift6, uint32_t mask6, uint32_t *field_value6)
367{
368 uint32_t reg_val = dm_read_reg(ctx, addr);
369 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
370 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
371 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
372 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
373 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
374 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
375 return reg_val;
376}
377
378uint32_t generic_reg_get7(const struct dc_context *ctx, uint32_t addr,
379 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
380 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
381 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
382 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
383 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
384 uint8_t shift6, uint32_t mask6, uint32_t *field_value6,
385 uint8_t shift7, uint32_t mask7, uint32_t *field_value7)
386{
387 uint32_t reg_val = dm_read_reg(ctx, addr);
388 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
389 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
390 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
391 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
392 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
393 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
394 *field_value7 = get_reg_field_value_ex(reg_val, mask7, shift7);
395 return reg_val;
396}
397
398uint32_t generic_reg_get8(const struct dc_context *ctx, uint32_t addr,
399 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
400 uint8_t shift2, uint32_t mask2, uint32_t *field_value2,
401 uint8_t shift3, uint32_t mask3, uint32_t *field_value3,
402 uint8_t shift4, uint32_t mask4, uint32_t *field_value4,
403 uint8_t shift5, uint32_t mask5, uint32_t *field_value5,
404 uint8_t shift6, uint32_t mask6, uint32_t *field_value6,
405 uint8_t shift7, uint32_t mask7, uint32_t *field_value7,
406 uint8_t shift8, uint32_t mask8, uint32_t *field_value8)
407{
408 uint32_t reg_val = dm_read_reg(ctx, addr);
409 *field_value1 = get_reg_field_value_ex(reg_val, mask1, shift1);
410 *field_value2 = get_reg_field_value_ex(reg_val, mask2, shift2);
411 *field_value3 = get_reg_field_value_ex(reg_val, mask3, shift3);
412 *field_value4 = get_reg_field_value_ex(reg_val, mask4, shift4);
413 *field_value5 = get_reg_field_value_ex(reg_val, mask5, shift5);
414 *field_value6 = get_reg_field_value_ex(reg_val, mask6, shift6);
415 *field_value7 = get_reg_field_value_ex(reg_val, mask7, shift7);
416 *field_value8 = get_reg_field_value_ex(reg_val, mask8, shift8);
417 return reg_val;
418}
419/* note: va version of this is pretty bad idea, since there is a output parameter pass by pointer
420 * compiler won't be able to check for size match and is prone to stack corruption type of bugs
421
422uint32_t generic_reg_get(const struct dc_context *ctx,
423 uint32_t addr, int n, ...)
424{
425 uint32_t shift, mask;
426 uint32_t *field_value;
427 uint32_t reg_val;
428 int i = 0;
429
430 reg_val = dm_read_reg(ctx, addr);
431
432 va_list ap;
433 va_start(ap, n);
434
435 while (i < n) {
436 shift = va_arg(ap, uint32_t);
437 mask = va_arg(ap, uint32_t);
438 field_value = va_arg(ap, uint32_t *);
439
440 *field_value = get_reg_field_value_ex(reg_val, mask, shift);
441 i++;
442 }
443
444 va_end(ap);
445
446 return reg_val;
447}
448*/
449
450void generic_reg_wait(const struct dc_context *ctx,
451 uint32_t addr, uint32_t shift, uint32_t mask, uint32_t condition_value,
452 unsigned int delay_between_poll_us, unsigned int time_out_num_tries,
453 const char *func_name, int line)
454{
455 uint32_t field_value;
456 uint32_t reg_val;
457 int i;
458
459 if (ctx->dmub_srv &&
460 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
461 dmub_reg_wait_done_pack(ctx, addr, mask, shift, condition_value,
462 delay_between_poll_us * time_out_num_tries);
463 return;
464 }
465
466 /*
467 * Something is terribly wrong if time out is > 3000ms.
468 * 3000ms is the maximum time needed for SMU to pass values back.
469 * This value comes from experiments.
470 *
471 */
472 ASSERT(delay_between_poll_us * time_out_num_tries <= 3000000);
473
474 for (i = 0; i <= time_out_num_tries; i++) {
475 if (i) {
476 if (delay_between_poll_us >= 1000)
477 msleep(delay_between_poll_us/1000);
478 else if (delay_between_poll_us > 0)
479 udelay(delay_between_poll_us);
480 }
481
482 reg_val = dm_read_reg(ctx, addr);
483
484 field_value = get_reg_field_value_ex(reg_val, mask, shift);
485
486 if (field_value == condition_value) {
487 if (i * delay_between_poll_us > 1000 &&
488 !IS_FPGA_MAXIMUS_DC(ctx->dce_environment))
489 DC_LOG_DC("REG_WAIT taking a while: %dms in %s line:%d\n",
490 delay_between_poll_us * i / 1000,
491 func_name, line);
492 return;
493 }
494 }
495
496 DC_LOG_WARNING("REG_WAIT timeout %dus * %d tries - %s line:%d\n",
497 delay_between_poll_us, time_out_num_tries,
498 func_name, line);
499
500 if (!IS_FPGA_MAXIMUS_DC(ctx->dce_environment))
501 BREAK_TO_DEBUGGER();
502}
503
504void generic_write_indirect_reg(const struct dc_context *ctx,
505 uint32_t addr_index, uint32_t addr_data,
506 uint32_t index, uint32_t data)
507{
508 dm_write_reg(ctx, addr_index, index);
509 dm_write_reg(ctx, addr_data, data);
510}
511
512uint32_t generic_read_indirect_reg(const struct dc_context *ctx,
513 uint32_t addr_index, uint32_t addr_data,
514 uint32_t index)
515{
516 uint32_t value = 0;
517
518 // when reg read, there should not be any offload.
519 if (ctx->dmub_srv &&
520 ctx->dmub_srv->reg_helper_offload.gather_in_progress) {
521 ASSERT(false);
522 }
523
524 dm_write_reg(ctx, addr_index, index);
525 value = dm_read_reg(ctx, addr_data);
526
527 return value;
528}
529
530uint32_t generic_indirect_reg_get(const struct dc_context *ctx,
531 uint32_t addr_index, uint32_t addr_data,
532 uint32_t index, int n,
533 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
534 ...)
535{
536 uint32_t shift, mask, *field_value;
537 uint32_t value = 0;
538 int i = 1;
539
540 va_list ap;
541
542 va_start(ap, field_value1);
543
544 value = generic_read_indirect_reg(ctx, addr_index, addr_data, index);
545 *field_value1 = get_reg_field_value_ex(value, mask1, shift1);
546
547 while (i < n) {
548 shift = va_arg(ap, uint32_t);
549 mask = va_arg(ap, uint32_t);
550 field_value = va_arg(ap, uint32_t *);
551
552 *field_value = get_reg_field_value_ex(value, mask, shift);
553 i++;
554 }
555
556 va_end(ap);
557
558 return value;
559}
560
561uint32_t generic_indirect_reg_update_ex(const struct dc_context *ctx,
562 uint32_t addr_index, uint32_t addr_data,
563 uint32_t index, uint32_t reg_val, int n,
564 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
565 ...)
566{
567 uint32_t shift, mask, field_value;
568 int i = 1;
569
570 va_list ap;
571
572 va_start(ap, field_value1);
573
574 reg_val = set_reg_field_value_ex(reg_val, field_value1, mask1, shift1);
575
576 while (i < n) {
577 shift = va_arg(ap, uint32_t);
578 mask = va_arg(ap, uint32_t);
579 field_value = va_arg(ap, uint32_t);
580
581 reg_val = set_reg_field_value_ex(reg_val, field_value, mask, shift);
582 i++;
583 }
584
585 generic_write_indirect_reg(ctx, addr_index, addr_data, index, reg_val);
586 va_end(ap);
587
588 return reg_val;
589}
590
591
592uint32_t generic_indirect_reg_update_ex_sync(const struct dc_context *ctx,
593 uint32_t index, uint32_t reg_val, int n,
594 uint8_t shift1, uint32_t mask1, uint32_t field_value1,
595 ...)
596{
597 uint32_t shift, mask, field_value;
598 int i = 1;
599
600 va_list ap;
601
602 va_start(ap, field_value1);
603
604 reg_val = set_reg_field_value_ex(reg_val, field_value1, mask1, shift1);
605
606 while (i < n) {
607 shift = va_arg(ap, uint32_t);
608 mask = va_arg(ap, uint32_t);
609 field_value = va_arg(ap, uint32_t);
610
611 reg_val = set_reg_field_value_ex(reg_val, field_value, mask, shift);
612 i++;
613 }
614
615 dm_write_index_reg(ctx, CGS_IND_REG__PCIE, index, reg_val);
616 va_end(ap);
617
618 return reg_val;
619}
620
621uint32_t generic_indirect_reg_get_sync(const struct dc_context *ctx,
622 uint32_t index, int n,
623 uint8_t shift1, uint32_t mask1, uint32_t *field_value1,
624 ...)
625{
626 uint32_t shift, mask, *field_value;
627 uint32_t value = 0;
628 int i = 1;
629
630 va_list ap;
631
632 va_start(ap, field_value1);
633
634 value = dm_read_index_reg(ctx, CGS_IND_REG__PCIE, index);
635 *field_value1 = get_reg_field_value_ex(value, mask1, shift1);
636
637 while (i < n) {
638 shift = va_arg(ap, uint32_t);
639 mask = va_arg(ap, uint32_t);
640 field_value = va_arg(ap, uint32_t *);
641
642 *field_value = get_reg_field_value_ex(value, mask, shift);
643 i++;
644 }
645
646 va_end(ap);
647
648 return value;
649}
650
651void reg_sequence_start_gather(const struct dc_context *ctx)
652{
653 /* if reg sequence is supported and enabled, set flag to
654 * indicate we want to have REG_SET, REG_UPDATE macro build
655 * reg sequence command buffer rather than MMIO directly.
656 */
657
658 if (ctx->dmub_srv && ctx->dc->debug.dmub_offload_enabled) {
659 struct dc_reg_helper_state *offload =
660 &ctx->dmub_srv->reg_helper_offload;
661
662 /* caller sequence mismatch. need to debug caller. offload will not work!!! */
663 ASSERT(!offload->gather_in_progress);
664
665 offload->gather_in_progress = true;
666 }
667}
668
669void reg_sequence_start_execute(const struct dc_context *ctx)
670{
671 struct dc_reg_helper_state *offload;
672
673 if (!ctx->dmub_srv)
674 return;
675
676 offload = &ctx->dmub_srv->reg_helper_offload;
677
678 if (offload && offload->gather_in_progress) {
679 offload->gather_in_progress = false;
680 offload->should_burst_write = false;
681 switch (offload->cmd_data.cmd_common.header.type) {
682 case DMUB_CMD__REG_SEQ_READ_MODIFY_WRITE:
683 submit_dmub_read_modify_write(offload, ctx);
684 break;
685 case DMUB_CMD__REG_REG_WAIT:
686 submit_dmub_reg_wait(offload, ctx);
687 break;
688 case DMUB_CMD__REG_SEQ_BURST_WRITE:
689 submit_dmub_burst_write(offload, ctx);
690 break;
691 default:
692 return;
693 }
694
695 dc_dmub_srv_cmd_execute(ctx->dmub_srv);
696 }
697}
698
699void reg_sequence_wait_done(const struct dc_context *ctx)
700{
701 /* callback to DM to poll for last submission done*/
702 struct dc_reg_helper_state *offload;
703
704 if (!ctx->dmub_srv)
705 return;
706
707 offload = &ctx->dmub_srv->reg_helper_offload;
708
709 if (offload &&
710 ctx->dc->debug.dmub_offload_enabled &&
711 !ctx->dc->debug.dmcub_emulation) {
712 dc_dmub_srv_wait_idle(ctx->dmub_srv);
713 }
714}