/*
* 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/if0014.h>
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 0:
*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;
spin_lock(&disp->client.lock);
if (disp->chan[chan->chid.user] == chan)
disp->chan[chan->chid.user] = NULL;
spin_unlock(&disp->client.lock);
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,
.ntfy = nvkm_disp_chan_ntfy,
.map = nvkm_disp_chan_map,
.sclass = nvkm_disp_chan_child_get,
};
static int
nvkm_disp_chan_new_(struct nvkm_disp *disp, int nr, const struct nvkm_oclass *oclass,
void *argv, u32 argc, struct nvkm_object **pobject)
{
const struct nvkm_disp_chan_user *user = NULL;
struct nvkm_disp_chan *chan;
union nvif_disp_chan_args *args = argv;
int ret, i;
for (i = 0; disp->func->user[i].ctor; i++) {
if (disp->func->user[i].base.oclass == oclass->base.oclass) {
user = disp->func->user[i].chan;
break;
}
}
if (WARN_ON(!user))
return -EINVAL;
if (argc != sizeof(args->v0) || args->v0.version != 0)
return -ENOSYS;
if (args->v0.id >= nr || !args->v0.pushbuf != !user->func->push)
return -EINVAL;
if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
return -ENOMEM;
*pobject = &chan->object;
nvkm_object_ctor(&nvkm_disp_chan, oclass, &chan->object);
chan->func = user->func;
chan->mthd = user->mthd;
chan->disp = disp;
chan->chid.ctrl = user->ctrl + args->v0.id;
chan->chid.user = user->user + args->v0.id;
chan->head = args->v0.id;
if (chan->func->push) {
ret = chan->func->push(chan, args->v0.pushbuf);
if (ret)
return ret;
}
spin_lock(&disp->client.lock);
if (disp->chan[chan->chid.user]) {
spin_unlock(&disp->client.lock);
return -EBUSY;
}
disp->chan[chan->chid.user] = chan;
spin_unlock(&disp->client.lock);
return 0;
}
int
nvkm_disp_wndw_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
return nvkm_disp_chan_new_(disp, disp->wndw.nr, oclass, argv, argc, pobject);
}
int
nvkm_disp_chan_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
return nvkm_disp_chan_new_(disp, disp->head.nr, oclass, argv, argc, pobject);
}
int
nvkm_disp_core_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
return nvkm_disp_chan_new_(disp, 1, oclass, argv, argc, pobject);
}
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