| 1 | /* $NetBSD: nouveau_engine_perfmon_base.c,v 1.3 2016/02/05 23:45:44 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2013 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_perfmon_base.c,v 1.3 2016/02/05 23:45:44 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/option.h> |
| 31 | #include <core/class.h> |
| 32 | |
| 33 | #include <subdev/clock.h> |
| 34 | |
| 35 | #include "priv.h" |
| 36 | |
| 37 | #define QUAD_MASK 0x0f |
| 38 | #define QUAD_FREE 0x01 |
| 39 | |
| 40 | static struct nouveau_perfsig * |
| 41 | nouveau_perfsig_find_(struct nouveau_perfdom *dom, const char *name, u32 size) |
| 42 | { |
| 43 | char path[64]; |
| 44 | int i; |
| 45 | |
| 46 | if (name[0] != '/') { |
| 47 | for (i = 0; i < dom->signal_nr; i++) { |
| 48 | if ( dom->signal[i].name && |
| 49 | !strncmp(name, dom->signal[i].name, size)) |
| 50 | return &dom->signal[i]; |
| 51 | } |
| 52 | } else { |
| 53 | for (i = 0; i < dom->signal_nr; i++) { |
| 54 | snprintf(path, sizeof(path), "/%s/%02x" , dom->name, i); |
| 55 | if (!strncmp(name, path, size)) |
| 56 | return &dom->signal[i]; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | static struct nouveau_perfsig * |
| 64 | nouveau_perfsig_find(struct nouveau_perfmon *ppm, const char *name, u32 size, |
| 65 | struct nouveau_perfdom **pdom) |
| 66 | { |
| 67 | struct nouveau_perfdom *dom = *pdom; |
| 68 | struct nouveau_perfsig *sig; |
| 69 | |
| 70 | if (dom == NULL) { |
| 71 | list_for_each_entry(dom, &ppm->domains, head) { |
| 72 | sig = nouveau_perfsig_find_(dom, name, size); |
| 73 | if (sig) { |
| 74 | *pdom = dom; |
| 75 | return sig; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | return NULL; |
| 80 | } |
| 81 | |
| 82 | return nouveau_perfsig_find_(dom, name, size); |
| 83 | } |
| 84 | |
| 85 | struct nouveau_perfctr * |
| 86 | nouveau_perfsig_wrap(struct nouveau_perfmon *ppm, const char *name, |
| 87 | struct nouveau_perfdom **pdom) |
| 88 | { |
| 89 | struct nouveau_perfsig *sig; |
| 90 | struct nouveau_perfctr *ctr; |
| 91 | |
| 92 | sig = nouveau_perfsig_find(ppm, name, strlen(name), pdom); |
| 93 | if (!sig) |
| 94 | return NULL; |
| 95 | |
| 96 | ctr = kzalloc(sizeof(*ctr), GFP_KERNEL); |
| 97 | if (ctr) { |
| 98 | ctr->signal[0] = sig; |
| 99 | ctr->logic_op = 0xaaaa; |
| 100 | } |
| 101 | |
| 102 | return ctr; |
| 103 | } |
| 104 | |
| 105 | /******************************************************************************* |
| 106 | * Perfmon object classes |
| 107 | ******************************************************************************/ |
| 108 | static int |
| 109 | nouveau_perfctr_query(struct nouveau_object *object, u32 mthd, |
| 110 | void *data, u32 size) |
| 111 | { |
| 112 | struct nouveau_device *device = nv_device(object); |
| 113 | struct nouveau_perfmon *ppm = (void *)object->engine; |
| 114 | struct nouveau_perfdom *dom = NULL, *chk; |
| 115 | struct nv_perfctr_query *args = data; |
| 116 | const bool all = nouveau_boolopt(device->cfgopt, "NvPmShowAll" , false); |
| 117 | const bool raw = nouveau_boolopt(device->cfgopt, "NvPmUnnamed" , all); |
| 118 | const char *name; |
| 119 | int tmp = 0, di, si; |
| 120 | char path[64]; |
| 121 | |
| 122 | if (size < sizeof(*args)) |
| 123 | return -EINVAL; |
| 124 | |
| 125 | di = (args->iter & 0xff000000) >> 24; |
| 126 | si = (args->iter & 0x00ffffff) - 1; |
| 127 | |
| 128 | list_for_each_entry(chk, &ppm->domains, head) { |
| 129 | if (tmp++ == di) { |
| 130 | dom = chk; |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | if (dom == NULL || si >= (int)dom->signal_nr) |
| 136 | return -EINVAL; |
| 137 | |
| 138 | if (si >= 0) { |
| 139 | if (raw || !(name = dom->signal[si].name)) { |
| 140 | snprintf(path, sizeof(path), "/%s/%02x" , dom->name, si); |
| 141 | name = path; |
| 142 | } |
| 143 | |
| 144 | if (args->name) |
| 145 | strncpy(args->name, name, args->size); |
| 146 | args->size = strlen(name) + 1; |
| 147 | } |
| 148 | |
| 149 | do { |
| 150 | while (++si < dom->signal_nr) { |
| 151 | if (all || dom->signal[si].name) { |
| 152 | args->iter = (di << 24) | ++si; |
| 153 | return 0; |
| 154 | } |
| 155 | } |
| 156 | si = -1; |
| 157 | di = di + 1; |
| 158 | dom = list_entry(dom->head.next, typeof(*dom), head); |
| 159 | } while (&dom->head != &ppm->domains); |
| 160 | |
| 161 | args->iter = 0xffffffff; |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | static int |
| 166 | nouveau_perfctr_sample(struct nouveau_object *object, u32 mthd, |
| 167 | void *data, u32 size) |
| 168 | { |
| 169 | struct nouveau_perfmon *ppm = (void *)object->engine; |
| 170 | struct nouveau_perfctr *ctr, *tmp; |
| 171 | struct nouveau_perfdom *dom; |
| 172 | struct nv_perfctr_sample *args = data; |
| 173 | |
| 174 | #if 1 |
| 175 | CTASSERT(sizeof(*args) == 0); |
| 176 | #else |
| 177 | if (size < sizeof(*args)) |
| 178 | return -EINVAL; |
| 179 | #endif |
| 180 | ppm->sequence++; |
| 181 | |
| 182 | list_for_each_entry(dom, &ppm->domains, head) { |
| 183 | /* sample previous batch of counters */ |
| 184 | if (dom->quad != QUAD_MASK) { |
| 185 | dom->func->next(ppm, dom); |
| 186 | tmp = NULL; |
| 187 | while (!list_empty(&dom->list)) { |
| 188 | ctr = list_first_entry(&dom->list, |
| 189 | typeof(*ctr), head); |
| 190 | if (ctr->slot < 0) break; |
| 191 | if ( tmp && tmp == ctr) break; |
| 192 | if (!tmp) tmp = ctr; |
| 193 | dom->func->read(ppm, dom, ctr); |
| 194 | ctr->slot = -1; |
| 195 | list_move_tail(&ctr->head, &dom->list); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | dom->quad = QUAD_MASK; |
| 200 | |
| 201 | /* setup next batch of counters for sampling */ |
| 202 | list_for_each_entry(ctr, &dom->list, head) { |
| 203 | ctr->slot = ffs(dom->quad) - 1; |
| 204 | if (ctr->slot < 0) |
| 205 | break; |
| 206 | dom->quad &= ~(QUAD_FREE << ctr->slot); |
| 207 | dom->func->init(ppm, dom, ctr); |
| 208 | } |
| 209 | |
| 210 | if (dom->quad != QUAD_MASK) |
| 211 | dom->func->next(ppm, dom); |
| 212 | } |
| 213 | |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | static int |
| 218 | nouveau_perfctr_read(struct nouveau_object *object, u32 mthd, |
| 219 | void *data, u32 size) |
| 220 | { |
| 221 | struct nouveau_perfctr *ctr = (void *)object; |
| 222 | struct nv_perfctr_read *args = data; |
| 223 | |
| 224 | if (size < sizeof(*args)) |
| 225 | return -EINVAL; |
| 226 | if (!ctr->clk) |
| 227 | return -EAGAIN; |
| 228 | |
| 229 | args->clk = ctr->clk; |
| 230 | args->ctr = ctr->ctr; |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static void |
| 235 | nouveau_perfctr_dtor(struct nouveau_object *object) |
| 236 | { |
| 237 | struct nouveau_perfctr *ctr = (void *)object; |
| 238 | if (ctr->head.next) |
| 239 | list_del(&ctr->head); |
| 240 | nouveau_object_destroy(&ctr->base); |
| 241 | } |
| 242 | |
| 243 | static int |
| 244 | nouveau_perfctr_ctor(struct nouveau_object *parent, |
| 245 | struct nouveau_object *engine, |
| 246 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 247 | struct nouveau_object **pobject) |
| 248 | { |
| 249 | struct nouveau_perfmon *ppm = (void *)engine; |
| 250 | struct nouveau_perfdom *dom = NULL; |
| 251 | struct nouveau_perfsig *sig[4] = {}; |
| 252 | struct nouveau_perfctr *ctr; |
| 253 | struct nv_perfctr_class *args = data; |
| 254 | int ret, i; |
| 255 | |
| 256 | if (size < sizeof(*args)) |
| 257 | return -EINVAL; |
| 258 | |
| 259 | for (i = 0; i < ARRAY_SIZE(args->signal) && args->signal[i].name; i++) { |
| 260 | sig[i] = nouveau_perfsig_find(ppm, args->signal[i].name, |
| 261 | args->signal[i].size, &dom); |
| 262 | if (!sig[i]) |
| 263 | return -EINVAL; |
| 264 | } |
| 265 | |
| 266 | ret = nouveau_object_create(parent, engine, oclass, 0, &ctr); |
| 267 | *pobject = nv_object(ctr); |
| 268 | if (ret) |
| 269 | return ret; |
| 270 | |
| 271 | ctr->slot = -1; |
| 272 | ctr->logic_op = args->logic_op; |
| 273 | ctr->signal[0] = sig[0]; |
| 274 | ctr->signal[1] = sig[1]; |
| 275 | ctr->signal[2] = sig[2]; |
| 276 | ctr->signal[3] = sig[3]; |
| 277 | if (dom) |
| 278 | list_add_tail(&ctr->head, &dom->list); |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | static struct nouveau_ofuncs |
| 283 | nouveau_perfctr_ofuncs = { |
| 284 | .ctor = nouveau_perfctr_ctor, |
| 285 | .dtor = nouveau_perfctr_dtor, |
| 286 | .init = nouveau_object_init, |
| 287 | .fini = nouveau_object_fini, |
| 288 | }; |
| 289 | |
| 290 | static struct nouveau_omthds |
| 291 | nouveau_perfctr_omthds[] = { |
| 292 | { NV_PERFCTR_QUERY, NV_PERFCTR_QUERY, nouveau_perfctr_query }, |
| 293 | { NV_PERFCTR_SAMPLE, NV_PERFCTR_SAMPLE, nouveau_perfctr_sample }, |
| 294 | { NV_PERFCTR_READ, NV_PERFCTR_READ, nouveau_perfctr_read }, |
| 295 | {} |
| 296 | }; |
| 297 | |
| 298 | struct nouveau_oclass |
| 299 | nouveau_perfmon_sclass[] = { |
| 300 | { .handle = NV_PERFCTR_CLASS, |
| 301 | .ofuncs = &nouveau_perfctr_ofuncs, |
| 302 | .omthds = nouveau_perfctr_omthds, |
| 303 | }, |
| 304 | {}, |
| 305 | }; |
| 306 | |
| 307 | /******************************************************************************* |
| 308 | * PPM context |
| 309 | ******************************************************************************/ |
| 310 | static void |
| 311 | nouveau_perfctx_dtor(struct nouveau_object *object) |
| 312 | { |
| 313 | struct nouveau_perfmon *ppm = (void *)object->engine; |
| 314 | mutex_lock(&nv_subdev(ppm)->mutex); |
| 315 | ppm->context = NULL; |
| 316 | mutex_unlock(&nv_subdev(ppm)->mutex); |
| 317 | } |
| 318 | |
| 319 | static int |
| 320 | nouveau_perfctx_ctor(struct nouveau_object *parent, |
| 321 | struct nouveau_object *engine, |
| 322 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 323 | struct nouveau_object **pobject) |
| 324 | { |
| 325 | struct nouveau_perfmon *ppm = (void *)engine; |
| 326 | struct nouveau_perfctx *ctx; |
| 327 | int ret; |
| 328 | |
| 329 | ret = nouveau_engctx_create(parent, engine, oclass, NULL, |
| 330 | 0, 0, 0, &ctx); |
| 331 | *pobject = nv_object(ctx); |
| 332 | if (ret) |
| 333 | return ret; |
| 334 | |
| 335 | mutex_lock(&nv_subdev(ppm)->mutex); |
| 336 | if (ppm->context == NULL) |
| 337 | ppm->context = ctx; |
| 338 | mutex_unlock(&nv_subdev(ppm)->mutex); |
| 339 | |
| 340 | if (ctx != ppm->context) |
| 341 | return -EBUSY; |
| 342 | |
| 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | struct nouveau_oclass |
| 347 | nouveau_perfmon_cclass = { |
| 348 | .handle = NV_ENGCTX(PERFMON, 0x00), |
| 349 | .ofuncs = &(struct nouveau_ofuncs) { |
| 350 | .ctor = nouveau_perfctx_ctor, |
| 351 | .dtor = nouveau_perfctx_dtor, |
| 352 | .init = _nouveau_engctx_init, |
| 353 | .fini = _nouveau_engctx_fini, |
| 354 | }, |
| 355 | }; |
| 356 | |
| 357 | /******************************************************************************* |
| 358 | * PPM engine/subdev functions |
| 359 | ******************************************************************************/ |
| 360 | int |
| 361 | nouveau_perfdom_new(struct nouveau_perfmon *ppm, const char *name, u32 mask, |
| 362 | u32 base, u32 size_unit, u32 size_domain, |
| 363 | const struct nouveau_specdom *spec) |
| 364 | { |
| 365 | const struct nouveau_specdom *sdom; |
| 366 | const struct nouveau_specsig *ssig; |
| 367 | struct nouveau_perfdom *dom; |
| 368 | int i; |
| 369 | |
| 370 | for (i = 0; i == 0 || mask; i++) { |
| 371 | u32 addr = base + (i * size_unit); |
| 372 | if (i && !(mask & (1 << i))) |
| 373 | continue; |
| 374 | |
| 375 | sdom = spec; |
| 376 | while (sdom->signal_nr) { |
| 377 | dom = kzalloc(sizeof(*dom) + sdom->signal_nr * |
| 378 | sizeof(*dom->signal), GFP_KERNEL); |
| 379 | if (!dom) |
| 380 | return -ENOMEM; |
| 381 | |
| 382 | if (mask) { |
| 383 | snprintf(dom->name, sizeof(dom->name), |
| 384 | "%s/%02x/%02x" , name, i, |
| 385 | (int)(sdom - spec)); |
| 386 | } else { |
| 387 | snprintf(dom->name, sizeof(dom->name), |
| 388 | "%s/%02x" , name, (int)(sdom - spec)); |
| 389 | } |
| 390 | |
| 391 | list_add_tail(&dom->head, &ppm->domains); |
| 392 | INIT_LIST_HEAD(&dom->list); |
| 393 | dom->func = sdom->func; |
| 394 | dom->addr = addr; |
| 395 | dom->quad = QUAD_MASK; |
| 396 | dom->signal_nr = sdom->signal_nr; |
| 397 | |
| 398 | ssig = (sdom++)->signal; |
| 399 | while (ssig->name) { |
| 400 | dom->signal[ssig->signal].name = ssig->name; |
| 401 | ssig++; |
| 402 | } |
| 403 | |
| 404 | addr += size_domain; |
| 405 | } |
| 406 | |
| 407 | mask &= ~(1 << i); |
| 408 | } |
| 409 | |
| 410 | return 0; |
| 411 | } |
| 412 | |
| 413 | int |
| 414 | _nouveau_perfmon_fini(struct nouveau_object *object, bool suspend) |
| 415 | { |
| 416 | struct nouveau_perfmon *ppm = (void *)object; |
| 417 | return nouveau_engine_fini(&ppm->base, suspend); |
| 418 | } |
| 419 | |
| 420 | int |
| 421 | _nouveau_perfmon_init(struct nouveau_object *object) |
| 422 | { |
| 423 | struct nouveau_perfmon *ppm = (void *)object; |
| 424 | return nouveau_engine_init(&ppm->base); |
| 425 | } |
| 426 | |
| 427 | void |
| 428 | _nouveau_perfmon_dtor(struct nouveau_object *object) |
| 429 | { |
| 430 | struct nouveau_perfmon *ppm = (void *)object; |
| 431 | struct nouveau_perfdom *dom, *tmp; |
| 432 | |
| 433 | list_for_each_entry_safe(dom, tmp, &ppm->domains, head) { |
| 434 | list_del(&dom->head); |
| 435 | kfree(dom); |
| 436 | } |
| 437 | |
| 438 | nouveau_engine_destroy(&ppm->base); |
| 439 | } |
| 440 | |
| 441 | int |
| 442 | nouveau_perfmon_create_(struct nouveau_object *parent, |
| 443 | struct nouveau_object *engine, |
| 444 | struct nouveau_oclass *oclass, |
| 445 | int length, void **pobject) |
| 446 | { |
| 447 | struct nouveau_perfmon *ppm; |
| 448 | int ret; |
| 449 | |
| 450 | ret = nouveau_engine_create_(parent, engine, oclass, true, "PPM" , |
| 451 | "perfmon" , length, pobject); |
| 452 | ppm = *pobject; |
| 453 | if (ret) |
| 454 | return ret; |
| 455 | |
| 456 | INIT_LIST_HEAD(&ppm->domains); |
| 457 | return 0; |
| 458 | } |
| 459 | |