1 /*
2 * Copyright 2015 Samuel Pitoiset
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 AUTHORS OR COPYRIGHT HOLDERS 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 #define NV50_PUSH_EXPLICIT_SPACE_CHECKING
24
25 #include "nv50/nv50_context.h"
26 #include "nv50/nv50_query_hw_sm.h"
27
28 #include "nv_object.xml.h"
29 #include "nv50/nv50_compute.xml.h"
30
31 /* === PERFORMANCE MONITORING COUNTERS for NV84+ === */
32
33 /* NOTE: intentionally using the same names as NV */
34 static const char *nv50_hw_sm_query_names[] =
35 {
36 "branch",
37 "divergent_branch",
38 "instructions",
39 "prof_trigger_00",
40 "prof_trigger_01",
41 "prof_trigger_02",
42 "prof_trigger_03",
43 "prof_trigger_04",
44 "prof_trigger_05",
45 "prof_trigger_06",
46 "prof_trigger_07",
47 "sm_cta_launched",
48 "warp_serialize",
49 };
50
51 static const uint64_t nv50_read_hw_sm_counters_code[] =
52 {
53 /* and b32 $r0 $r0 0x0000ffff
54 * add b32 $c0 $r0 $r0 $r0
55 * (lg $c0) ret
56 * mov $r0 $pm0
57 * mov $r1 $pm1
58 * mov $r2 $pm2
59 * mov $r3 $pm3
60 * mov $r4 $physid
61 * ld $r5 b32 s[0x14]
62 * ld $r6 b32 s[0x18]
63 * and b32 $r4 $r4 0x000f0000
64 * shr u32 $r4 $r4 0x10
65 * mul $r4 u24 $r4 0x14
66 * add b32 $r5 $r5 $r4
67 * st b32 g15[$r5] $r0
68 * add b32 $r5 $r5 0x04
69 * st b32 g15[$r5] $r1
70 * add b32 $r5 $r5 0x04
71 * st b32 g15[$r5] $r2
72 * add b32 $r5 $r5 0x04
73 * st b32 g15[$r5] $r3
74 * add b32 $r5 $r5 0x04
75 * exit st b32 g15[$r5] $r6 */
76 0x00000fffd03f0001ULL,
77 0x040007c020000001ULL,
78 0x0000028030000003ULL,
79 0x6001078000000001ULL,
80 0x6001478000000005ULL,
81 0x6001878000000009ULL,
82 0x6001c7800000000dULL,
83 0x6000078000000011ULL,
84 0x4400c78010000a15ULL,
85 0x4400c78010000c19ULL,
86 0x0000f003d0000811ULL,
87 0xe410078030100811ULL,
88 0x0000000340540811ULL,
89 0x0401078020000a15ULL,
90 0xa0c00780d00f0a01ULL,
91 0x0000000320048a15ULL,
92 0xa0c00780d00f0a05ULL,
93 0x0000000320048a15ULL,
94 0xa0c00780d00f0a09ULL,
95 0x0000000320048a15ULL,
96 0xa0c00780d00f0a0dULL,
97 0x0000000320048a15ULL,
98 0xa0c00781d00f0a19ULL,
99 };
100
101 struct nv50_hw_sm_counter_cfg
102 {
103 uint32_t mode : 4; /* LOGOP, LOGOP_PULSE */
104 uint32_t unit : 8; /* UNK[0-5] */
105 uint32_t sig : 8; /* signal selection */
106 };
107
108 struct nv50_hw_sm_query_cfg
109 {
110 struct nv50_hw_sm_counter_cfg ctr[4];
111 uint8_t num_counters;
112 };
113
114 #define _Q(n, m, u, s) [NV50_HW_SM_QUERY_##n] = { { { NV50_COMPUTE_MP_PM_CONTROL_MODE_##m, NV50_COMPUTE_MP_PM_CONTROL_UNIT_##u, s, }, {}, {}, {} }, 1 }
115
116 /* ==== Compute capability 1.1 (G84+) ==== */
117 static const struct nv50_hw_sm_query_cfg sm11_hw_sm_queries[] =
118 {
119 _Q(BRANCH, LOGOP, UNK4, 0x02),
120 _Q(DIVERGENT_BRANCH, LOGOP, UNK4, 0x09),
121 _Q(INSTRUCTIONS, LOGOP, UNK4, 0x04),
122 _Q(PROF_TRIGGER_0, LOGOP, UNK1, 0x26),
123 _Q(PROF_TRIGGER_1, LOGOP, UNK1, 0x27),
124 _Q(PROF_TRIGGER_2, LOGOP, UNK1, 0x28),
125 _Q(PROF_TRIGGER_3, LOGOP, UNK1, 0x29),
126 _Q(PROF_TRIGGER_4, LOGOP, UNK1, 0x2a),
127 _Q(PROF_TRIGGER_5, LOGOP, UNK1, 0x2b),
128 _Q(PROF_TRIGGER_6, LOGOP, UNK1, 0x2c),
129 _Q(PROF_TRIGGER_7, LOGOP, UNK1, 0x2d),
130 _Q(SM_CTA_LAUNCHED, LOGOP, UNK1, 0x33),
131 _Q(WARP_SERIALIZE, LOGOP, UNK0, 0x0b),
132 };
133
nv50_hw_sm_get_func(uint8_t slot)134 static inline uint16_t nv50_hw_sm_get_func(uint8_t slot)
135 {
136 switch (slot) {
137 case 0: return 0xaaaa;
138 case 1: return 0xcccc;
139 case 2: return 0xf0f0;
140 case 3: return 0xff00;
141 }
142 return 0;
143 }
144
145 static const struct nv50_hw_sm_query_cfg *
nv50_hw_sm_query_get_cfg(struct nv50_context * nv50,struct nv50_hw_query * hq)146 nv50_hw_sm_query_get_cfg(struct nv50_context *nv50, struct nv50_hw_query *hq)
147 {
148 struct nv50_query *q = &hq->base;
149 return &sm11_hw_sm_queries[q->type - NV50_HW_SM_QUERY(0)];
150 }
151
152 static void
nv50_hw_sm_destroy_query(struct nv50_context * nv50,struct nv50_hw_query * hq)153 nv50_hw_sm_destroy_query(struct nv50_context *nv50, struct nv50_hw_query *hq)
154 {
155 struct nv50_query *q = &hq->base;
156 nv50_hw_query_allocate(nv50, q, 0);
157 nouveau_fence_ref(NULL, &hq->fence);
158 FREE(hq);
159 }
160
161 static bool
nv50_hw_sm_begin_query(struct nv50_context * nv50,struct nv50_hw_query * hq)162 nv50_hw_sm_begin_query(struct nv50_context *nv50, struct nv50_hw_query *hq)
163 {
164 struct nv50_screen *screen = nv50->screen;
165 struct nouveau_pushbuf *push = nv50->base.pushbuf;
166 struct nv50_hw_sm_query *hsq = nv50_hw_sm_query(hq);
167 const struct nv50_hw_sm_query_cfg *cfg;
168 uint16_t func;
169 int i, c;
170
171 cfg = nv50_hw_sm_query_get_cfg(nv50, hq);
172
173 /* check if we have enough free counter slots */
174 if (screen->pm.num_hw_sm_active + cfg->num_counters > 4) {
175 NOUVEAU_ERR("Not enough free MP counter slots !\n");
176 return false;
177 }
178
179 assert(cfg->num_counters <= 4);
180 PUSH_SPACE(push, 4 * 4);
181
182 /* set sequence field to 0 (used to check if result is available) */
183 for (i = 0; i < screen->MPsInTP; ++i) {
184 const unsigned b = (0x14 / 4) * i;
185 hq->data[b + 16] = 0;
186 }
187 hq->sequence++;
188
189 for (i = 0; i < cfg->num_counters; i++) {
190 screen->pm.num_hw_sm_active++;
191
192 /* find free counter slots */
193 for (c = 0; c < 4; ++c) {
194 if (!screen->pm.mp_counter[c]) {
195 hsq->ctr[i] = c;
196 screen->pm.mp_counter[c] = hsq;
197 break;
198 }
199 }
200
201 /* select func to aggregate counters */
202 func = nv50_hw_sm_get_func(c);
203
204 /* configure and reset the counter(s) */
205 BEGIN_NV04(push, NV50_CP(MP_PM_CONTROL(c)), 1);
206 PUSH_DATA (push, (cfg->ctr[i].sig << 24) | (func << 8)
207 | cfg->ctr[i].unit | cfg->ctr[i].mode);
208 BEGIN_NV04(push, NV50_CP(MP_PM_SET(c)), 1);
209 PUSH_DATA (push, 0);
210 }
211 return true;
212 }
213
214 static void
nv50_hw_sm_end_query(struct nv50_context * nv50,struct nv50_hw_query * hq)215 nv50_hw_sm_end_query(struct nv50_context *nv50, struct nv50_hw_query *hq)
216 {
217 struct nv50_screen *screen = nv50->screen;
218 struct pipe_context *pipe = &nv50->base.pipe;
219 struct nouveau_pushbuf *push = nv50->base.pushbuf;
220 struct nv50_hw_sm_query *hsq = nv50_hw_sm_query(hq);
221 struct nv50_program *old = nv50->compprog;
222 struct pipe_grid_info info = {};
223 uint32_t mask;
224 uint32_t input[3];
225 const uint block[3] = { 32, 1, 1 };
226 const uint grid[3] = { screen->MPsInTP, screen->TPs, 1 };
227 int c, i;
228
229 if (unlikely(!screen->pm.prog)) {
230 struct nv50_program *prog = CALLOC_STRUCT(nv50_program);
231 prog->type = PIPE_SHADER_COMPUTE;
232 prog->translated = true;
233 prog->max_gpr = 7;
234 prog->parm_size = 8;
235 prog->code = (uint32_t *)nv50_read_hw_sm_counters_code;
236 prog->code_size = sizeof(nv50_read_hw_sm_counters_code);
237 screen->pm.prog = prog;
238 }
239
240 /* disable all counting */
241 PUSH_SPACE(push, 8);
242 for (c = 0; c < 4; c++) {
243 if (screen->pm.mp_counter[c]) {
244 BEGIN_NV04(push, NV50_CP(MP_PM_CONTROL(c)), 1);
245 PUSH_DATA (push, 0);
246 }
247 }
248
249 /* release counters for this query */
250 for (c = 0; c < 4; c++) {
251 if (screen->pm.mp_counter[c] == hsq) {
252 screen->pm.num_hw_sm_active--;
253 screen->pm.mp_counter[c] = NULL;
254 }
255 }
256
257 BCTX_REFN_bo(nv50->bufctx_cp, CP_QUERY, NOUVEAU_BO_GART | NOUVEAU_BO_WR,
258 hq->bo);
259
260 PUSH_SPACE(push, 2);
261 BEGIN_NV04(push, SUBC_CP(NV50_GRAPH_SERIALIZE), 1);
262 PUSH_DATA (push, 0);
263
264 pipe->bind_compute_state(pipe, screen->pm.prog);
265 input[0] = hq->bo->offset + hq->base_offset;
266 input[1] = hq->sequence;
267
268 for (i = 0; i < 3; i++) {
269 info.block[i] = block[i];
270 info.grid[i] = grid[i];
271 }
272 info.pc = 0;
273 info.input = input;
274 pipe->launch_grid(pipe, &info);
275 pipe->bind_compute_state(pipe, old);
276
277 nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_QUERY);
278
279 /* re-active other counters */
280 PUSH_SPACE(push, 8);
281 mask = 0;
282 for (c = 0; c < 4; c++) {
283 const struct nv50_hw_sm_query_cfg *cfg;
284 unsigned i;
285
286 hsq = screen->pm.mp_counter[c];
287 if (!hsq)
288 continue;
289
290 cfg = nv50_hw_sm_query_get_cfg(nv50, &hsq->base);
291 for (i = 0; i < cfg->num_counters; i++) {
292 uint16_t func;
293
294 if (mask & (1 << hsq->ctr[i]))
295 break;
296
297 mask |= 1 << hsq->ctr[i];
298 func = nv50_hw_sm_get_func(hsq->ctr[i]);
299
300 BEGIN_NV04(push, NV50_CP(MP_PM_CONTROL(hsq->ctr[i])), 1);
301 PUSH_DATA (push, (cfg->ctr[i].sig << 24) | (func << 8)
302 | cfg->ctr[i].unit | cfg->ctr[i].mode);
303 }
304 }
305 }
306
307 static inline bool
nv50_hw_sm_query_read_data(uint32_t count[32][4],struct nv50_context * nv50,bool wait,struct nv50_hw_query * hq,const struct nv50_hw_sm_query_cfg * cfg,unsigned mp_count)308 nv50_hw_sm_query_read_data(uint32_t count[32][4],
309 struct nv50_context *nv50, bool wait,
310 struct nv50_hw_query *hq,
311 const struct nv50_hw_sm_query_cfg *cfg,
312 unsigned mp_count)
313 {
314 struct nv50_hw_sm_query *hsq = nv50_hw_sm_query(hq);
315 unsigned p, c;
316
317 for (p = 0; p < mp_count; ++p) {
318 const unsigned b = (0x14 / 4) * p;
319
320 for (c = 0; c < cfg->num_counters; ++c) {
321 if (hq->data[b + 4] != hq->sequence) {
322 if (!wait)
323 return false;
324 if (nouveau_bo_wait(hq->bo, NOUVEAU_BO_RD, nv50->base.client))
325 return false;
326 }
327 count[p][c] = hq->data[b + hsq->ctr[c]];
328 }
329 }
330 return true;
331 }
332
333 static bool
nv50_hw_sm_get_query_result(struct nv50_context * nv50,struct nv50_hw_query * hq,bool wait,union pipe_query_result * result)334 nv50_hw_sm_get_query_result(struct nv50_context *nv50, struct nv50_hw_query *hq,
335 bool wait, union pipe_query_result *result)
336 {
337 uint32_t count[32][4];
338 uint64_t value = 0;
339 unsigned mp_count = MIN2(nv50->screen->MPsInTP, 32);
340 unsigned p, c;
341 const struct nv50_hw_sm_query_cfg *cfg;
342 bool ret;
343
344 cfg = nv50_hw_sm_query_get_cfg(nv50, hq);
345
346 ret = nv50_hw_sm_query_read_data(count, nv50, wait, hq, cfg, mp_count);
347 if (!ret)
348 return false;
349
350 for (c = 0; c < cfg->num_counters; ++c)
351 for (p = 0; p < mp_count; ++p)
352 value += count[p][c];
353
354 /* We only count a single TP, and simply multiply by the total number of
355 * TPs to compute result over all TPs. This is inaccurate, but enough! */
356 value *= nv50->screen->TPs;
357
358 *(uint64_t *)result = value;
359 return true;
360 }
361
362 static const struct nv50_hw_query_funcs hw_sm_query_funcs = {
363 .destroy_query = nv50_hw_sm_destroy_query,
364 .begin_query = nv50_hw_sm_begin_query,
365 .end_query = nv50_hw_sm_end_query,
366 .get_query_result = nv50_hw_sm_get_query_result,
367 };
368
369 struct nv50_hw_query *
nv50_hw_sm_create_query(struct nv50_context * nv50,unsigned type)370 nv50_hw_sm_create_query(struct nv50_context *nv50, unsigned type)
371 {
372 struct nv50_hw_sm_query *hsq;
373 struct nv50_hw_query *hq;
374 unsigned space;
375
376 if (type < NV50_HW_SM_QUERY(0) || type > NV50_HW_SM_QUERY_LAST)
377 return NULL;
378
379 hsq = CALLOC_STRUCT(nv50_hw_sm_query);
380 if (!hsq)
381 return NULL;
382
383 hq = &hsq->base;
384 hq->funcs = &hw_sm_query_funcs;
385 hq->base.type = type;
386
387 /*
388 * for each MP:
389 * [00] = MP.C0
390 * [04] = MP.C1
391 * [08] = MP.C2
392 * [0c] = MP.C3
393 * [10] = MP.sequence
394 */
395 space = (4 + 1) * nv50->screen->MPsInTP * sizeof(uint32_t);
396
397 if (!nv50_hw_query_allocate(nv50, &hq->base, space)) {
398 FREE(hq);
399 return NULL;
400 }
401
402 return hq;
403 }
404
405 int
nv50_hw_sm_get_driver_query_info(struct nv50_screen * screen,unsigned id,struct pipe_driver_query_info * info)406 nv50_hw_sm_get_driver_query_info(struct nv50_screen *screen, unsigned id,
407 struct pipe_driver_query_info *info)
408 {
409 int count = 0;
410
411 if (screen->compute)
412 if (screen->base.class_3d >= NV84_3D_CLASS)
413 count += NV50_HW_SM_QUERY_COUNT;
414
415 if (!info)
416 return count;
417
418 if (id < count) {
419 if (screen->compute) {
420 if (screen->base.class_3d >= NV84_3D_CLASS) {
421 info->name = nv50_hw_sm_query_names[id];
422 info->query_type = NV50_HW_SM_QUERY(id);
423 info->group_id = NV50_HW_SM_QUERY_GROUP;
424 return 1;
425 }
426 }
427 }
428 return 0;
429 }
430