1/*
2 * Copyright 2007 Nouveau Project
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 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include <stdlib.h>
24#include <errno.h>
25
26#include "nouveau_private.h"
27
28int
29nouveau_grobj_alloc(struct nouveau_channel *chan, uint32_t handle,
30		    int class, struct nouveau_grobj **grobj)
31{
32	struct nouveau_device_priv *nvdev = nouveau_device(chan->device);
33	struct nouveau_grobj_priv *nvgrobj;
34	struct drm_nouveau_grobj_alloc g;
35	int ret;
36
37	if (!nvdev || !grobj || *grobj)
38		return -EINVAL;
39
40	nvgrobj = calloc(1, sizeof(*nvgrobj));
41	if (!nvgrobj)
42		return -ENOMEM;
43	nvgrobj->base.channel = chan;
44	nvgrobj->base.handle  = handle;
45	nvgrobj->base.grclass = class;
46	nvgrobj->base.bound   = NOUVEAU_GROBJ_UNBOUND;
47	nvgrobj->base.subc    = -1;
48
49	g.channel = chan->id;
50	g.handle  = handle;
51	g.class   = class;
52	ret = drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GROBJ_ALLOC,
53			      &g, sizeof(g));
54	if (ret) {
55		nouveau_grobj_free((void *)&nvgrobj);
56		return ret;
57	}
58
59	*grobj = &nvgrobj->base;
60	return 0;
61}
62
63int
64nouveau_grobj_ref(struct nouveau_channel *chan, uint32_t handle,
65		  struct nouveau_grobj **grobj)
66{
67	struct nouveau_grobj_priv *nvgrobj;
68
69	if (!chan || !grobj || *grobj)
70		return -EINVAL;
71
72	nvgrobj = calloc(1, sizeof(struct nouveau_grobj_priv));
73	if (!nvgrobj)
74		return -ENOMEM;
75	nvgrobj->base.channel = chan;
76	nvgrobj->base.handle = handle;
77	nvgrobj->base.grclass = 0;
78
79	*grobj = &nvgrobj->base;
80	return 0;
81}
82
83void
84nouveau_grobj_free(struct nouveau_grobj **grobj)
85{
86	struct nouveau_device_priv *nvdev;
87	struct nouveau_channel_priv *chan;
88	struct nouveau_grobj_priv *nvgrobj;
89
90	if (!grobj || !*grobj)
91		return;
92	nvgrobj = nouveau_grobj(*grobj);
93	*grobj = NULL;
94
95
96	chan = nouveau_channel(nvgrobj->base.channel);
97	nvdev = nouveau_device(chan->base.device);
98
99	if (nvgrobj->base.grclass) {
100		struct drm_nouveau_gpuobj_free f;
101
102		f.channel = chan->drm.channel;
103		f.handle  = nvgrobj->base.handle;
104		drmCommandWrite(nvdev->fd, DRM_NOUVEAU_GPUOBJ_FREE,
105				&f, sizeof(f));
106	}
107	free(nvgrobj);
108}
109
110void
111nouveau_grobj_autobind(struct nouveau_grobj *grobj)
112{
113	struct nouveau_subchannel *subc = NULL;
114	int i;
115
116	for (i = 0; i < 8; i++) {
117		struct nouveau_subchannel *scc = &grobj->channel->subc[i];
118
119		if (scc->gr && scc->gr->bound == NOUVEAU_GROBJ_BOUND_EXPLICIT)
120			continue;
121
122		if (!subc || scc->sequence < subc->sequence)
123			subc = scc;
124	}
125
126	if (subc->gr) {
127		subc->gr->bound = NOUVEAU_GROBJ_UNBOUND;
128		subc->gr->subc  = -1;
129	}
130
131	subc->gr = grobj;
132	subc->gr->bound = NOUVEAU_GROBJ_BOUND;
133	subc->gr->subc  = subc - &grobj->channel->subc[0];
134
135	BEGIN_RING(grobj->channel, grobj, 0x0000, 1);
136	OUT_RING  (grobj->channel, grobj->handle);
137}
138
139