1 /*
2  * Copyright 2012 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
23  */
24 #include <engine/sw.h>
25 #include <engine/fifo.h>
26 
27 struct nv04_sw_priv {
28 	struct nvkm_sw base;
29 };
30 
31 struct nv04_sw_chan {
32 	struct nvkm_sw_chan base;
33 };
34 
35 /*******************************************************************************
36  * software object classes
37  ******************************************************************************/
38 
39 static int
40 nv04_sw_set_ref(struct nvkm_object *object, u32 mthd, void *data, u32 size)
41 {
42 	struct nvkm_object *channel = (void *)nv_engctx(object->parent);
43 	struct nvkm_fifo_chan *fifo = (void *)channel->parent;
44 	atomic_set(&fifo->refcnt, *(u32*)data);
45 	return 0;
46 }
47 
48 static int
49 nv04_sw_flip(struct nvkm_object *object, u32 mthd, void *args, u32 size)
50 {
51 	struct nv04_sw_chan *chan = (void *)nv_engctx(object->parent);
52 	if (chan->base.flip)
53 		return chan->base.flip(chan->base.flip_data);
54 	return -EINVAL;
55 }
56 
57 static struct nvkm_omthds
58 nv04_sw_omthds[] = {
59 	{ 0x0150, 0x0150, nv04_sw_set_ref },
60 	{ 0x0500, 0x0500, nv04_sw_flip },
61 	{}
62 };
63 
64 static struct nvkm_oclass
65 nv04_sw_sclass[] = {
66 	{ 0x006e, &nvkm_object_ofuncs, nv04_sw_omthds },
67 	{}
68 };
69 
70 /*******************************************************************************
71  * software context
72  ******************************************************************************/
73 
74 static int
75 nv04_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
76 		     struct nvkm_oclass *oclass, void *data, u32 size,
77 		     struct nvkm_object **pobject)
78 {
79 	struct nv04_sw_chan *chan;
80 	int ret;
81 
82 	ret = nvkm_sw_context_create(parent, engine, oclass, &chan);
83 	*pobject = nv_object(chan);
84 	if (ret)
85 		return ret;
86 
87 	return 0;
88 }
89 
90 static struct nvkm_oclass
91 nv04_sw_cclass = {
92 	.handle = NV_ENGCTX(SW, 0x04),
93 	.ofuncs = &(struct nvkm_ofuncs) {
94 		.ctor = nv04_sw_context_ctor,
95 		.dtor = _nvkm_sw_context_dtor,
96 		.init = _nvkm_sw_context_init,
97 		.fini = _nvkm_sw_context_fini,
98 	},
99 };
100 
101 /*******************************************************************************
102  * software engine/subdev functions
103  ******************************************************************************/
104 
105 void
106 nv04_sw_intr(struct nvkm_subdev *subdev)
107 {
108 	nv_mask(subdev, 0x000100, 0x80000000, 0x00000000);
109 }
110 
111 static int
112 nv04_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
113 	     struct nvkm_oclass *oclass, void *data, u32 size,
114 	     struct nvkm_object **pobject)
115 {
116 	struct nv04_sw_priv *priv;
117 	int ret;
118 
119 	ret = nvkm_sw_create(parent, engine, oclass, &priv);
120 	*pobject = nv_object(priv);
121 	if (ret)
122 		return ret;
123 
124 	nv_engine(priv)->cclass = &nv04_sw_cclass;
125 	nv_engine(priv)->sclass = nv04_sw_sclass;
126 	nv_subdev(priv)->intr = nv04_sw_intr;
127 	return 0;
128 }
129 
130 struct nvkm_oclass *
131 nv04_sw_oclass = &(struct nvkm_oclass) {
132 	.handle = NV_ENGINE(SW, 0x04),
133 	.ofuncs = &(struct nvkm_ofuncs) {
134 		.ctor = nv04_sw_ctor,
135 		.dtor = _nvkm_sw_dtor,
136 		.init = _nvkm_sw_init,
137 		.fini = _nvkm_sw_fini,
138 	},
139 };
140