diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/chan.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/chan.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/chan.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/chan.c new file mode 100644 index 000000000000..fac9fc41847c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/chan.c @@ -0,0 +1,223 @@ +/* + * Copyright 2021 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 "chan.h" + +#include <core/oproxy.h> +#include <core/ramht.h> + +#include <nvif/cl507d.h> + +static int +nvkm_disp_chan_rd32(struct nvkm_object *object, u64 addr, u32 *data) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_device *device = chan->disp->engine.subdev.device; + u64 size, base = chan->func->user(chan, &size); + + *data = nvkm_rd32(device, base + addr); + return 0; +} + +static int +nvkm_disp_chan_wr32(struct nvkm_object *object, u64 addr, u32 data) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_device *device = chan->disp->engine.subdev.device; + u64 size, base = chan->func->user(chan, &size); + + nvkm_wr32(device, base + addr, data); + return 0; +} + +static int +nvkm_disp_chan_ntfy(struct nvkm_object *object, u32 type, struct nvkm_event **pevent) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_disp *disp = chan->disp; + + switch (type) { + case NV50_DISP_CORE_CHANNEL_DMA_V0_NTFY_UEVENT: + *pevent = &disp->uevent; + return 0; + default: + break; + } + + return -EINVAL; +} + +static int +nvkm_disp_chan_map(struct nvkm_object *object, void *argv, u32 argc, + enum nvkm_object_map *type, u64 *addr, u64 *size) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_device *device = chan->disp->engine.subdev.device; + const u64 base = device->func->resource_addr(device, 0); + + *type = NVKM_OBJECT_MAP_IO; + *addr = base + chan->func->user(chan, size); + return 0; +} + +struct nvkm_disp_chan_object { + struct nvkm_oproxy oproxy; + struct nvkm_disp *disp; + int hash; +}; + +static void +nvkm_disp_chan_child_del_(struct nvkm_oproxy *base) +{ + struct nvkm_disp_chan_object *object = container_of(base, typeof(*object), oproxy); + + nvkm_ramht_remove(object->disp->ramht, object->hash); +} + +static const struct nvkm_oproxy_func +nvkm_disp_chan_child_func_ = { + .dtor[0] = nvkm_disp_chan_child_del_, +}; + +static int +nvkm_disp_chan_child_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, + struct nvkm_object **pobject) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(oclass->parent); + struct nvkm_disp *disp = chan->disp; + struct nvkm_device *device = disp->engine.subdev.device; + const struct nvkm_device_oclass *sclass = oclass->priv; + struct nvkm_disp_chan_object *object; + int ret; + + if (!(object = kzalloc(sizeof(*object), GFP_KERNEL))) + return -ENOMEM; + nvkm_oproxy_ctor(&nvkm_disp_chan_child_func_, oclass, &object->oproxy); + object->disp = disp; + *pobject = &object->oproxy.base; + + ret = sclass->ctor(device, oclass, argv, argc, &object->oproxy.object); + if (ret) + return ret; + + object->hash = chan->func->bind(chan, object->oproxy.object, oclass->handle); + if (object->hash < 0) + return object->hash; + + return 0; +} + +static int +nvkm_disp_chan_child_get(struct nvkm_object *object, int index, struct nvkm_oclass *sclass) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_device *device = chan->disp->engine.subdev.device; + const struct nvkm_device_oclass *oclass = NULL; + + if (chan->func->bind) + sclass->engine = nvkm_device_engine(device, NVKM_ENGINE_DMAOBJ, 0); + else + sclass->engine = NULL; + + if (sclass->engine && sclass->engine->func->base.sclass) { + sclass->engine->func->base.sclass(sclass, index, &oclass); + if (oclass) { + sclass->ctor = nvkm_disp_chan_child_new; + sclass->priv = oclass; + return 0; + } + } + + return -EINVAL; +} + +static int +nvkm_disp_chan_fini(struct nvkm_object *object, bool suspend) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + + chan->func->fini(chan); + chan->func->intr(chan, false); + return 0; +} + +static int +nvkm_disp_chan_init(struct nvkm_object *object) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + + chan->func->intr(chan, true); + return chan->func->init(chan); +} + +static void * +nvkm_disp_chan_dtor(struct nvkm_object *object) +{ + struct nvkm_disp_chan *chan = nvkm_disp_chan(object); + struct nvkm_disp *disp = chan->disp; + + if (chan->chid.user >= 0) + disp->chan[chan->chid.user] = NULL; + + nvkm_memory_unref(&chan->memory); + return chan; +} + +static const struct nvkm_object_func +nvkm_disp_chan = { + .dtor = nvkm_disp_chan_dtor, + .init = nvkm_disp_chan_init, + .fini = nvkm_disp_chan_fini, + .rd32 = nvkm_disp_chan_rd32, + .wr32 = nvkm_disp_chan_wr32, + .ntfy = nvkm_disp_chan_ntfy, + .map = nvkm_disp_chan_map, + .sclass = nvkm_disp_chan_child_get, +}; + +int +nvkm_disp_chan_new_(const struct nvkm_disp_chan_func *func, + const struct nvkm_disp_chan_mthd *mthd, + struct nvkm_disp *disp, int ctrl, int user, int head, + const struct nvkm_oclass *oclass, + struct nvkm_object **pobject) +{ + struct nvkm_disp_chan *chan; + + if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL))) + return -ENOMEM; + *pobject = &chan->object; + + nvkm_object_ctor(&nvkm_disp_chan, oclass, &chan->object); + chan->func = func; + chan->mthd = mthd; + chan->disp = disp; + chan->chid.ctrl = ctrl; + chan->chid.user = user; + chan->head = head; + + if (disp->chan[chan->chid.user]) { + chan->chid.user = -1; + return -EBUSY; + } + disp->chan[chan->chid.user] = chan; + return 0; +} |