1/*
2 * Copyright 2015 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
23 */
24#include "chan.h"
25
26#include <engine/fifo.h>
27
28#include <nvif/event.h>
29#include <nvif/unpack.h>
30
31bool
32nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data)
33{
34	switch (mthd) {
35	case 0x0000:
36		return true;
37	case 0x0500:
38		nvkm_event_ntfy(&chan->event, 0, NVKM_SW_CHAN_EVENT_PAGE_FLIP);
39		return true;
40	default:
41		if (chan->func->mthd)
42			return chan->func->mthd(chan, subc, mthd, data);
43		break;
44	}
45	return false;
46}
47
48static const struct nvkm_event_func
49nvkm_sw_chan_event = {
50};
51
52static void *
53nvkm_sw_chan_dtor(struct nvkm_object *object)
54{
55	struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
56	struct nvkm_sw *sw = chan->sw;
57	unsigned long flags;
58	void *data = chan;
59
60	if (chan->func->dtor)
61		data = chan->func->dtor(chan);
62	nvkm_event_fini(&chan->event);
63
64	spin_lock_irqsave(&sw->engine.lock, flags);
65	list_del(&chan->head);
66	spin_unlock_irqrestore(&sw->engine.lock, flags);
67	return data;
68}
69
70static const struct nvkm_object_func
71nvkm_sw_chan = {
72	.dtor = nvkm_sw_chan_dtor,
73};
74
75int
76nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
77		  struct nvkm_chan *fifo, const struct nvkm_oclass *oclass,
78		  struct nvkm_sw_chan *chan)
79{
80	unsigned long flags;
81
82	nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
83	chan->func = func;
84	chan->sw = sw;
85	chan->fifo = fifo;
86	spin_lock_irqsave(&sw->engine.lock, flags);
87	list_add(&chan->head, &sw->chan);
88	spin_unlock_irqrestore(&sw->engine.lock, flags);
89
90	return nvkm_event_init(&nvkm_sw_chan_event, &sw->engine.subdev, 1, 1, &chan->event);
91}
92