92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
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/*
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* Copyright 2015 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include "chan.h"
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#include <engine/fifo.h>
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#include <nvif/event.h>
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#include <nvif/unpack.h>
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bool
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nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data)
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{
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switch (mthd) {
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case 0x0000:
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return true;
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case 0x0500:
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nvkm_event_ntfy(&chan->event, 0, NVKM_SW_CHAN_EVENT_PAGE_FLIP);
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return true;
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default:
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if (chan->func->mthd)
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return chan->func->mthd(chan, subc, mthd, data);
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break;
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}
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return false;
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}
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static const struct nvkm_event_func
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nvkm_sw_chan_event = {
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};
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static void *
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nvkm_sw_chan_dtor(struct nvkm_object *object)
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{
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struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
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struct nvkm_sw *sw = chan->sw;
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unsigned long flags;
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void *data = chan;
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if (chan->func->dtor)
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data = chan->func->dtor(chan);
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nvkm_event_fini(&chan->event);
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spin_lock_irqsave(&sw->engine.lock, flags);
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list_del(&chan->head);
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spin_unlock_irqrestore(&sw->engine.lock, flags);
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return data;
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}
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static const struct nvkm_object_func
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nvkm_sw_chan = {
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.dtor = nvkm_sw_chan_dtor,
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};
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int
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nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
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struct nvkm_fifo_chan *fifo, const struct nvkm_oclass *oclass,
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struct nvkm_sw_chan *chan)
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{
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unsigned long flags;
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nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
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chan->func = func;
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chan->sw = sw;
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chan->fifo = fifo;
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spin_lock_irqsave(&sw->engine.lock, flags);
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list_add(&chan->head, &sw->chan);
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spin_unlock_irqrestore(&sw->engine.lock, flags);
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return nvkm_event_init(&nvkm_sw_chan_event, &sw->engine.subdev, 1, 1, &chan->event);
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}
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