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/*
* Copyright 2015 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 <bskeggs@redhat.com>
*/
#include "chan.h"
#include <core/notify.h>
#include <engine/fifo.h>
#include <nvif/event.h>
#include <nvif/unpack.h>
bool
nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data)
{
switch (mthd) {
case 0x0000:
return true;
case 0x0500:
nvkm_event_send(&chan->event, 1, 0, NULL, 0);
return true;
default:
if (chan->func->mthd)
return chan->func->mthd(chan, subc, mthd, data);
break;
}
return false;
}
static int
nvkm_sw_chan_event_ctor(struct nvkm_object *object, void *data, u32 size,
struct nvkm_notify *notify)
{
union {
struct nvif_notify_uevent_req none;
} *req = data;
int ret = -ENOSYS;
if (!(ret = nvif_unvers(ret, &data, &size, req->none))) {
notify->size = sizeof(struct nvif_notify_uevent_rep);
notify->types = 1;
notify->index = 0;
}
return ret;
}
static const struct nvkm_event_func
nvkm_sw_chan_event = {
.ctor = nvkm_sw_chan_event_ctor,
};
static void *
nvkm_sw_chan_dtor(struct nvkm_object *object)
{
struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
struct nvkm_sw *sw = chan->sw;
unsigned long flags;
void *data = chan;
if (chan->func->dtor)
data = chan->func->dtor(chan);
nvkm_event_fini(&chan->event);
spin_lock_irqsave(&sw->engine.lock, flags);
list_del(&chan->head);
spin_unlock_irqrestore(&sw->engine.lock, flags);
return data;
}
static const struct nvkm_object_func
nvkm_sw_chan = {
.dtor = nvkm_sw_chan_dtor,
};
int
nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
struct nvkm_fifo_chan *fifo, const struct nvkm_oclass *oclass,
struct nvkm_sw_chan *chan)
{
unsigned long flags;
nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
chan->func = func;
chan->sw = sw;
chan->fifo = fifo;
spin_lock_irqsave(&sw->engine.lock, flags);
list_add(&chan->head, &sw->chan);
spin_unlock_irqrestore(&sw->engine.lock, flags);
return nvkm_event_init(&nvkm_sw_chan_event, 1, 1, &chan->event);
}
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