From: Ben Skeggs Date: Tue, 8 May 2018 10:39:46 +0000 (+1000) Subject: drm/nouveau/fifo/gk104-: support querying engines available on each runlist X-Git-Tag: v4.18-rc1~128^2~7^2~135 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=cc36205085bb6e3a4eed1edbe413fd2235cadb27;p=linux.git drm/nouveau/fifo/gk104-: support querying engines available on each runlist Will be used to improve channel runlist selection. Signed-off-by: Ben Skeggs --- diff --git a/drivers/gpu/drm/nouveau/include/nvif/cl0080.h b/drivers/gpu/drm/nouveau/include/nvif/cl0080.h index 5af610ea260e..49c1c90d2bde 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/cl0080.h +++ b/drivers/gpu/drm/nouveau/include/nvif/cl0080.h @@ -83,4 +83,11 @@ struct nv_device_time_v0 { /* Returns the number of available channels. */ #define NV_DEVICE_FIFO_CHANNELS NV_DEVICE_FIFO(0x00000000) + +/* Returns a mask of available runlists. */ +#define NV_DEVICE_FIFO_RUNLISTS NV_DEVICE_FIFO(0x00000001) + +/* These return a mask of engines available on a particular runlist. */ +#define NV_DEVICE_FIFO_RUNLIST_ENGINES(n) ((n) + NV_DEVICE_FIFO(0x00000010)) +#define NV_DEVICE_FIFO_RUNLIST_ENGINES__SIZE 64 #endif diff --git a/drivers/gpu/drm/nouveau/include/nvif/device.h b/drivers/gpu/drm/nouveau/include/nvif/device.h index 216dbd9fa616..76fe21e395de 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/device.h +++ b/drivers/gpu/drm/nouveau/include/nvif/device.h @@ -8,6 +8,11 @@ struct nvif_device { struct nvif_object object; struct nv_device_info_v0 info; + + struct nvif_fifo_runlist { + u64 engines; + } *runlist; + int runlists; }; int nvif_device_init(struct nvif_object *, u32 handle, s32 oclass, void *, u32, diff --git a/drivers/gpu/drm/nouveau/include/nvif/fifo.h b/drivers/gpu/drm/nouveau/include/nvif/fifo.h new file mode 100644 index 000000000000..e9468c9f9abf --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvif/fifo.h @@ -0,0 +1,18 @@ +#ifndef __NVIF_FIFO_H__ +#define __NVIF_FIFO_H__ +#include + +/* Returns mask of runlists that support a NV_DEVICE_INFO_ENGINE_* type. */ +u64 nvif_fifo_runlist(struct nvif_device *, u64 engine); + +/* CE-supporting runlists (excluding GRCE, if others exist). */ +static inline u64 +nvif_fifo_runlist_ce(struct nvif_device *device) +{ + u64 runmgr = nvif_fifo_runlist(device, NV_DEVICE_INFO_ENGINE_GR); + u64 runmce = nvif_fifo_runlist(device, NV_DEVICE_INFO_ENGINE_CE); + if (runmce && !(runmce &= ~runmgr)) + runmce = runmgr; + return runmce; +} +#endif diff --git a/drivers/gpu/drm/nouveau/nvif/Kbuild b/drivers/gpu/drm/nouveau/nvif/Kbuild index f1675a4ab6fa..c817b02b7acf 100644 --- a/drivers/gpu/drm/nouveau/nvif/Kbuild +++ b/drivers/gpu/drm/nouveau/nvif/Kbuild @@ -2,6 +2,7 @@ nvif-y := nvif/object.o nvif-y += nvif/client.o nvif-y += nvif/device.o nvif-y += nvif/driver.o +nvif-y += nvif/fifo.o nvif-y += nvif/mem.o nvif-y += nvif/mmu.o nvif-y += nvif/notify.o diff --git a/drivers/gpu/drm/nouveau/nvif/device.c b/drivers/gpu/drm/nouveau/nvif/device.c index 252d8c33215b..ca5eb3dde70a 100644 --- a/drivers/gpu/drm/nouveau/nvif/device.c +++ b/drivers/gpu/drm/nouveau/nvif/device.c @@ -37,6 +37,8 @@ nvif_device_time(struct nvif_device *device) void nvif_device_fini(struct nvif_device *device) { + kfree(device->runlist); + device->runlist = NULL; nvif_object_fini(&device->object); } @@ -46,6 +48,7 @@ nvif_device_init(struct nvif_object *parent, u32 handle, s32 oclass, { int ret = nvif_object_init(parent, handle, oclass, data, size, &device->object); + device->runlist = NULL; if (ret == 0) { device->info.version = 0; ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_INFO, diff --git a/drivers/gpu/drm/nouveau/nvif/fifo.c b/drivers/gpu/drm/nouveau/nvif/fifo.c new file mode 100644 index 000000000000..99d4fd17543c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvif/fifo.c @@ -0,0 +1,99 @@ +/* + * Copyright 2018 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. + */ +#include + +static int +nvif_fifo_runlists(struct nvif_device *device) +{ + struct nvif_object *object = &device->object; + struct { + struct nv_device_info_v1 m; + struct { + struct nv_device_info_v1_data runlists; + struct nv_device_info_v1_data runlist[64]; + } v; + } *a; + int ret, i; + + if (device->runlist) + return 0; + + if (!(a = kmalloc(sizeof(*a), GFP_KERNEL))) + return -ENOMEM; + a->m.version = 1; + a->m.count = sizeof(a->v) / sizeof(a->v.runlists); + a->v.runlists.mthd = NV_DEVICE_FIFO_RUNLISTS; + for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++) + a->v.runlist[i].mthd = NV_DEVICE_FIFO_RUNLIST_ENGINES(i); + + ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a)); + if (ret) + goto done; + + device->runlists = fls64(a->v.runlists.data); + device->runlist = kzalloc(sizeof(*device->runlist) * + device->runlists, GFP_KERNEL); + if (!device->runlist) { + ret = -ENOMEM; + goto done; + } + + for (i = 0; i < device->runlists; i++) { + if (a->v.runlists.data & BIT_ULL(i)) + device->runlist[i].engines = a->v.runlist[i].data; + } + +done: + kfree(a); + return ret; +} + +u64 +nvif_fifo_runlist(struct nvif_device *device, u64 engine) +{ + struct nvif_object *object = &device->object; + struct { + struct nv_device_info_v1 m; + struct { + struct nv_device_info_v1_data engine; + } v; + } a = { + .m.version = 1, + .m.count = sizeof(a.v) / sizeof(a.v.engine), + .v.engine.mthd = engine, + }; + u64 runm = 0; + int ret, i; + + if ((ret = nvif_fifo_runlists(device))) + return runm; + + ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, &a, sizeof(a)); + if (ret == 0) { + for (i = 0; i < device->runlists; i++) { + if (device->runlist[i].engines & a.v.engine.data) + runm |= BIT_ULL(i); + } + } + + return runm; +} diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c index ed56087b4abe..1642d8ea68f1 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/base.c @@ -284,6 +284,8 @@ nvkm_fifo_info(struct nvkm_engine *engine, u64 mthd, u64 *data) switch (mthd) { case NV_DEVICE_FIFO_CHANNELS: *data = fifo->nr; return 0; default: + if (fifo->func->info) + return fifo->func->info(fifo, mthd, data); break; } return -ENOSYS; diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c index b5706b15a64d..b6c23cf43f83 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c @@ -33,6 +33,7 @@ #include #include +#include struct gk104_fifo_engine_status { bool busy; @@ -783,6 +784,34 @@ gk104_fifo_fini(struct nvkm_fifo *base) nvkm_mask(device, 0x002140, 0x10000000, 0x10000000); } +static int +gk104_fifo_info(struct nvkm_fifo *base, u64 mthd, u64 *data) +{ + struct gk104_fifo *fifo = gk104_fifo(base); + switch (mthd) { + case NV_DEVICE_FIFO_RUNLISTS: + *data = (1ULL << fifo->runlist_nr) - 1; + return 0; + case NV_DEVICE_FIFO_RUNLIST_ENGINES(0)... + NV_DEVICE_FIFO_RUNLIST_ENGINES(63): { + int runl = mthd - NV_DEVICE_FIFO_RUNLIST_ENGINES(0), engn; + if (runl < fifo->runlist_nr) { + unsigned long engm = fifo->runlist[runl].engm; + struct nvkm_engine *engine; + *data = 0; + for_each_set_bit(engn, &engm, fifo->engine_nr) { + if ((engine = fifo->engine[engn].engine)) + *data |= BIT_ULL(engine->subdev.index); + } + return 0; + } + } + return -EINVAL; + default: + return -EINVAL; + } +} + static int gk104_fifo_oneinit(struct nvkm_fifo *base) { @@ -912,6 +941,7 @@ static const struct nvkm_fifo_func gk104_fifo_ = { .dtor = gk104_fifo_dtor, .oneinit = gk104_fifo_oneinit, + .info = gk104_fifo_info, .init = gk104_fifo_init, .fini = gk104_fifo_fini, .intr = gk104_fifo_intr, diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h index df74b54773b9..f9b4e9d2c08a 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h @@ -18,6 +18,7 @@ struct nvkm_fifo_chan_oclass; struct nvkm_fifo_func { void *(*dtor)(struct nvkm_fifo *); int (*oneinit)(struct nvkm_fifo *); + int (*info)(struct nvkm_fifo *, u64 mthd, u64 *data); void (*init)(struct nvkm_fifo *); void (*fini)(struct nvkm_fifo *); void (*intr)(struct nvkm_fifo *);