diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/perfmon/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/perfmon/base.c | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/perfmon/base.c b/drivers/gpu/drm/nouveau/core/engine/perfmon/base.c new file mode 100644 index 000000000000..e9c5e51943ef --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/engine/perfmon/base.c @@ -0,0 +1,449 @@ +/* + * Copyright 2013 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include <core/option.h> +#include <core/class.h> + +#include <subdev/clock.h> + +#include "priv.h" + +#define QUAD_MASK 0x0f +#define QUAD_FREE 0x01 + +static struct nouveau_perfsig * +nouveau_perfsig_find_(struct nouveau_perfdom *dom, const char *name, u32 size) +{ + char path[64]; + int i; + + if (name[0] != '/') { + for (i = 0; i < dom->signal_nr; i++) { + if ( dom->signal[i].name && + !strncmp(name, dom->signal[i].name, size)) + return &dom->signal[i]; + } + } else { + for (i = 0; i < dom->signal_nr; i++) { + snprintf(path, sizeof(path), "/%s/%02x", dom->name, i); + if (!strncmp(name, path, size)) + return &dom->signal[i]; + } + } + + return NULL; +} + +struct nouveau_perfsig * +nouveau_perfsig_find(struct nouveau_perfmon *ppm, const char *name, u32 size, + struct nouveau_perfdom **pdom) +{ + struct nouveau_perfdom *dom = *pdom; + struct nouveau_perfsig *sig; + + if (dom == NULL) { + list_for_each_entry(dom, &ppm->domains, head) { + sig = nouveau_perfsig_find_(dom, name, size); + if (sig) { + *pdom = dom; + return sig; + } + } + + return NULL; + } + + return nouveau_perfsig_find_(dom, name, size); +} + +struct nouveau_perfctr * +nouveau_perfsig_wrap(struct nouveau_perfmon *ppm, const char *name, + struct nouveau_perfdom **pdom) +{ + struct nouveau_perfsig *sig; + struct nouveau_perfctr *ctr; + + sig = nouveau_perfsig_find(ppm, name, strlen(name), pdom); + if (!sig) + return NULL; + + ctr = kzalloc(sizeof(*ctr), GFP_KERNEL); + if (ctr) { + ctr->signal[0] = sig; + ctr->logic_op = 0xaaaa; + } + + return ctr; +} + +/******************************************************************************* + * Perfmon object classes + ******************************************************************************/ +static int +nouveau_perfctr_query(struct nouveau_object *object, u32 mthd, + void *data, u32 size) +{ + struct nouveau_device *device = nv_device(object); + struct nouveau_perfmon *ppm = (void *)object->engine; + struct nouveau_perfdom *dom = NULL, *chk; + struct nv_perfctr_query *args = data; + const bool all = nouveau_boolopt(device->cfgopt, "NvPmShowAll", false); + const bool raw = nouveau_boolopt(device->cfgopt, "NvPmUnnamed", all); + const char *name; + int tmp = 0, di, si; + char path[64]; + + if (size < sizeof(*args)) + return -EINVAL; + + di = (args->iter & 0xff000000) >> 24; + si = (args->iter & 0x00ffffff) - 1; + + list_for_each_entry(chk, &ppm->domains, head) { + if (tmp++ == di) { + dom = chk; + break; + } + } + + if (dom == NULL || si >= (int)dom->signal_nr) + return -EINVAL; + + if (si >= 0) { + if (raw || !(name = dom->signal[si].name)) { + snprintf(path, sizeof(path), "/%s/%02x", dom->name, si); + name = path; + } + + if (args->name) + strncpy(args->name, name, args->size); + args->size = strlen(name) + 1; + } + + do { + while (++si < dom->signal_nr) { + if (all || dom->signal[si].name) { + args->iter = (di << 24) | ++si; + return 0; + } + } + si = -1; + di = di + 1; + dom = list_entry(dom->head.next, typeof(*dom), head); + } while (&dom->head != &ppm->domains); + + args->iter = 0xffffffff; + return 0; +} + +static int +nouveau_perfctr_sample(struct nouveau_object *object, u32 mthd, + void *data, u32 size) +{ + struct nouveau_perfmon *ppm = (void *)object->engine; + struct nouveau_perfctr *ctr, *tmp; + struct nouveau_perfdom *dom; + struct nv_perfctr_sample *args = data; + + if (size < sizeof(*args)) + return -EINVAL; + ppm->sequence++; + + list_for_each_entry(dom, &ppm->domains, head) { + /* sample previous batch of counters */ + if (dom->quad != QUAD_MASK) { + dom->func->next(ppm, dom); + tmp = NULL; + while (!list_empty(&dom->list)) { + ctr = list_first_entry(&dom->list, + typeof(*ctr), head); + if (ctr->slot < 0) break; + if ( tmp && tmp == ctr) break; + if (!tmp) tmp = ctr; + dom->func->read(ppm, dom, ctr); + ctr->slot = -1; + list_move_tail(&ctr->head, &dom->list); + } + } + + dom->quad = QUAD_MASK; + + /* setup next batch of counters for sampling */ + list_for_each_entry(ctr, &dom->list, head) { + ctr->slot = ffs(dom->quad) - 1; + if (ctr->slot < 0) + break; + dom->quad &= ~(QUAD_FREE << ctr->slot); + dom->func->init(ppm, dom, ctr); + } + + if (dom->quad != QUAD_MASK) + dom->func->next(ppm, dom); + } + + return 0; +} + +static int +nouveau_perfctr_read(struct nouveau_object *object, u32 mthd, + void *data, u32 size) +{ + struct nouveau_perfctr *ctr = (void *)object; + struct nv_perfctr_read *args = data; + + if (size < sizeof(*args)) + return -EINVAL; + if (!ctr->clk) + return -EAGAIN; + + args->clk = ctr->clk; + args->ctr = ctr->ctr; + return 0; +} + +static void +nouveau_perfctr_dtor(struct nouveau_object *object) +{ + struct nouveau_perfctr *ctr = (void *)object; + if (ctr->head.next) + list_del(&ctr->head); + nouveau_object_destroy(&ctr->base); +} + +static int +nouveau_perfctr_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_perfmon *ppm = (void *)engine; + struct nouveau_perfdom *dom = NULL; + struct nouveau_perfsig *sig[4] = {}; + struct nouveau_perfctr *ctr; + struct nv_perfctr_class *args = data; + int ret, i; + + if (size < sizeof(*args)) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(args->signal) && args->signal[i].name; i++) { + sig[i] = nouveau_perfsig_find(ppm, args->signal[i].name, + args->signal[i].size, &dom); + if (!sig[i]) + return -EINVAL; + } + + ret = nouveau_object_create(parent, engine, oclass, 0, &ctr); + *pobject = nv_object(ctr); + if (ret) + return ret; + + ctr->slot = -1; + ctr->logic_op = args->logic_op; + ctr->signal[0] = sig[0]; + ctr->signal[1] = sig[1]; + ctr->signal[2] = sig[2]; + ctr->signal[3] = sig[3]; + if (dom) + list_add_tail(&ctr->head, &dom->list); + return 0; +} + +static struct nouveau_ofuncs +nouveau_perfctr_ofuncs = { + .ctor = nouveau_perfctr_ctor, + .dtor = nouveau_perfctr_dtor, + .init = nouveau_object_init, + .fini = nouveau_object_fini, +}; + +static struct nouveau_omthds +nouveau_perfctr_omthds[] = { + { NV_PERFCTR_QUERY, NV_PERFCTR_QUERY, nouveau_perfctr_query }, + { NV_PERFCTR_SAMPLE, NV_PERFCTR_SAMPLE, nouveau_perfctr_sample }, + { NV_PERFCTR_READ, NV_PERFCTR_READ, nouveau_perfctr_read }, + {} +}; + +struct nouveau_oclass +nouveau_perfmon_sclass[] = { + { .handle = NV_PERFCTR_CLASS, + .ofuncs = &nouveau_perfctr_ofuncs, + .omthds = nouveau_perfctr_omthds, + }, + {}, +}; + +/******************************************************************************* + * PPM context + ******************************************************************************/ +static void +nouveau_perfctx_dtor(struct nouveau_object *object) +{ + struct nouveau_perfmon *ppm = (void *)object->engine; + mutex_lock(&nv_subdev(ppm)->mutex); + ppm->context = NULL; + mutex_unlock(&nv_subdev(ppm)->mutex); +} + +static int +nouveau_perfctx_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_perfmon *ppm = (void *)engine; + struct nouveau_perfctx *ctx; + int ret; + + ret = nouveau_engctx_create(parent, engine, oclass, NULL, + 0, 0, 0, &ctx); + *pobject = nv_object(ctx); + if (ret) + return ret; + + mutex_lock(&nv_subdev(ppm)->mutex); + if (ppm->context == NULL) + ppm->context = ctx; + mutex_unlock(&nv_subdev(ppm)->mutex); + + if (ctx != ppm->context) + return -EBUSY; + + return 0; +} + +struct nouveau_oclass +nouveau_perfmon_cclass = { + .handle = NV_ENGCTX(PERFMON, 0x00), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nouveau_perfctx_ctor, + .dtor = nouveau_perfctx_dtor, + .init = _nouveau_engctx_init, + .fini = _nouveau_engctx_fini, + }, +}; + +/******************************************************************************* + * PPM engine/subdev functions + ******************************************************************************/ +int +nouveau_perfdom_new(struct nouveau_perfmon *ppm, const char *name, u32 mask, + u32 base, u32 size_unit, u32 size_domain, + const struct nouveau_specdom *spec) +{ + const struct nouveau_specdom *sdom; + const struct nouveau_specsig *ssig; + struct nouveau_perfdom *dom; + int i; + + for (i = 0; i == 0 || mask; i++) { + u32 addr = base + (i * size_unit); + if (i && !(mask & (1 << i))) + continue; + + sdom = spec; + while (sdom->signal_nr) { + dom = kzalloc(sizeof(*dom) + sdom->signal_nr * + sizeof(*dom->signal), GFP_KERNEL); + if (!dom) + return -ENOMEM; + + if (mask) { + snprintf(dom->name, sizeof(dom->name), + "%s/%02x/%02x", name, i, + (int)(sdom - spec)); + } else { + snprintf(dom->name, sizeof(dom->name), + "%s/%02x", name, (int)(sdom - spec)); + } + + list_add_tail(&dom->head, &ppm->domains); + INIT_LIST_HEAD(&dom->list); + dom->func = sdom->func; + dom->addr = addr; + dom->quad = QUAD_MASK; + dom->signal_nr = sdom->signal_nr; + + ssig = (sdom++)->signal; + while (ssig->name) { + dom->signal[ssig->signal].name = ssig->name; + ssig++; + } + + addr += size_domain; + } + + mask &= ~(1 << i); + } + + return 0; +} + +int +_nouveau_perfmon_fini(struct nouveau_object *object, bool suspend) +{ + struct nouveau_perfmon *ppm = (void *)object; + return nouveau_engine_fini(&ppm->base, suspend); +} + +int +_nouveau_perfmon_init(struct nouveau_object *object) +{ + struct nouveau_perfmon *ppm = (void *)object; + return nouveau_engine_init(&ppm->base); +} + +void +_nouveau_perfmon_dtor(struct nouveau_object *object) +{ + struct nouveau_perfmon *ppm = (void *)object; + struct nouveau_perfdom *dom, *tmp; + + list_for_each_entry_safe(dom, tmp, &ppm->domains, head) { + list_del(&dom->head); + kfree(dom); + } + + nouveau_engine_destroy(&ppm->base); +} + +int +nouveau_perfmon_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, + int length, void **pobject) +{ + struct nouveau_perfmon *ppm; + int ret; + + ret = nouveau_engine_create_(parent, engine, oclass, true, "PPM", + "perfmon", length, pobject); + ppm = *pobject; + if (ret) + return ret; + + INIT_LIST_HEAD(&ppm->domains); + return 0; +} |