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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 "priv.h"
#include "chan.h"
#include <engine/fifo.h>
bool
nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)
{
struct nvkm_sw_chan *chan;
bool handled = false;
unsigned long flags;
spin_lock_irqsave(&sw->engine.lock, flags);
list_for_each_entry(chan, &sw->chan, head) {
if (chan->fifo->chid == chid) {
handled = nvkm_sw_chan_mthd(chan, subc, mthd, data);
list_del(&chan->head);
list_add(&chan->head, &sw->chan);
break;
}
}
spin_unlock_irqrestore(&sw->engine.lock, flags);
return handled;
}
static int
nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);
const struct nvkm_sw_chan_sclass *sclass = oclass->engn;
return sclass->ctor(chan, oclass, data, size, pobject);
}
static int
nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)
{
struct nvkm_sw *sw = nvkm_sw(oclass->engine);
int c = 0;
while (sw->func->sclass[c].ctor) {
if (c++ == index) {
oclass->engn = &sw->func->sclass[index];
oclass->base = sw->func->sclass[index].base;
oclass->base.ctor = nvkm_sw_oclass_new;
return index;
}
}
return c;
}
static int
nvkm_sw_cclass_get(struct nvkm_fifo_chan *fifoch,
const struct nvkm_oclass *oclass,
struct nvkm_object **pobject)
{
struct nvkm_sw *sw = nvkm_sw(oclass->engine);
return sw->func->chan_new(sw, fifoch, oclass, pobject);
}
static void *
nvkm_sw_dtor(struct nvkm_engine *engine)
{
return nvkm_sw(engine);
}
static const struct nvkm_engine_func
nvkm_sw = {
.dtor = nvkm_sw_dtor,
.fifo.cclass = nvkm_sw_cclass_get,
.fifo.sclass = nvkm_sw_oclass_get,
};
int
nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device,
int index, struct nvkm_sw **psw)
{
struct nvkm_sw *sw;
if (!(sw = *psw = kzalloc(sizeof(*sw), GFP_KERNEL)))
return -ENOMEM;
INIT_LIST_HEAD(&sw->chan);
sw->func = func;
return nvkm_engine_ctor(&nvkm_sw, device, index, 0, true, &sw->engine);
}
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