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 #include <nvif/ioctl.h>
28 
29 /*******************************************************************************
30  * software object classes
31  ******************************************************************************/
32 
33 static int
34 nv04_sw_set_ref(struct nvkm_object *object, u32 mthd, void *data, u32 size)
35 {
36 	struct nvkm_object *channel = (void *)nv_engctx(object->parent);
37 	struct nvkm_fifo_chan *fifo = (void *)channel->parent;
38 	atomic_set(&fifo->refcnt, *(u32*)data);
39 	return 0;
40 }
41 
42 static int
43 nv04_sw_flip(struct nvkm_object *object, u32 mthd, void *args, u32 size)
44 {
45 	struct nvkm_sw_chan *chan = (void *)nv_engctx(object->parent);
46 	if (chan->flip)
47 		return chan->flip(chan->flip_data);
48 	return -EINVAL;
49 }
50 
51 static struct nvkm_omthds
52 nv04_sw_omthds[] = {
53 	{ 0x0150, 0x0150, nv04_sw_set_ref },
54 	{ 0x0500, 0x0500, nv04_sw_flip },
55 	{}
56 };
57 
58 static struct nvkm_oclass
59 nv04_sw_sclass[] = {
60 	{ NVIF_IOCTL_NEW_V0_SW_NV04, &nvkm_object_ofuncs, nv04_sw_omthds },
61 	{}
62 };
63 
64 /*******************************************************************************
65  * software context
66  ******************************************************************************/
67 
68 static int
69 nv04_sw_context_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
70 		     struct nvkm_oclass *oclass, void *data, u32 size,
71 		     struct nvkm_object **pobject)
72 {
73 	struct nvkm_sw_chan *chan;
74 	int ret;
75 
76 	ret = nvkm_sw_context_create(parent, engine, oclass, &chan);
77 	*pobject = nv_object(chan);
78 	if (ret)
79 		return ret;
80 
81 	return 0;
82 }
83 
84 static struct nvkm_oclass
85 nv04_sw_cclass = {
86 	.handle = NV_ENGCTX(SW, 0x04),
87 	.ofuncs = &(struct nvkm_ofuncs) {
88 		.ctor = nv04_sw_context_ctor,
89 		.dtor = _nvkm_sw_context_dtor,
90 		.init = _nvkm_sw_context_init,
91 		.fini = _nvkm_sw_context_fini,
92 	},
93 };
94 
95 /*******************************************************************************
96  * software engine/subdev functions
97  ******************************************************************************/
98 
99 void
100 nv04_sw_intr(struct nvkm_subdev *subdev)
101 {
102 	nvkm_mask(subdev->device, 0x000100, 0x80000000, 0x00000000);
103 }
104 
105 static int
106 nv04_sw_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
107 	     struct nvkm_oclass *oclass, void *data, u32 size,
108 	     struct nvkm_object **pobject)
109 {
110 	struct nvkm_sw *sw;
111 	int ret;
112 
113 	ret = nvkm_sw_create(parent, engine, oclass, &sw);
114 	*pobject = nv_object(sw);
115 	if (ret)
116 		return ret;
117 
118 	nv_engine(sw)->cclass = &nv04_sw_cclass;
119 	nv_engine(sw)->sclass = nv04_sw_sclass;
120 	nv_subdev(sw)->intr = nv04_sw_intr;
121 	return 0;
122 }
123 
124 struct nvkm_oclass *
125 nv04_sw_oclass = &(struct nvkm_oclass) {
126 	.handle = NV_ENGINE(SW, 0x04),
127 	.ofuncs = &(struct nvkm_ofuncs) {
128 		.ctor = nv04_sw_ctor,
129 		.dtor = _nvkm_sw_dtor,
130 		.init = _nvkm_sw_init,
131 		.fini = _nvkm_sw_fini,
132 	},
133 };
134