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 "priv.h"
25 
26 #include <engine/fifo.h>
27 
28 static void
29 nvkm_gr_tile(struct nvkm_engine *engine, int region, struct nvkm_fb_tile *tile)
30 {
31 	struct nvkm_gr *gr = nvkm_gr(engine);
32 	if (gr->func->tile)
33 		gr->func->tile(gr, region, tile);
34 }
35 
36 u64
37 nvkm_gr_units(struct nvkm_gr *gr)
38 {
39 	if (gr->func->units)
40 		return gr->func->units(gr);
41 	return 0;
42 }
43 
44 int
45 nvkm_gr_tlb_flush(struct nvkm_gr *gr)
46 {
47 	if (gr->func->tlb_flush)
48 		return gr->func->tlb_flush(gr);
49 	return -ENODEV;
50 }
51 
52 static int
53 nvkm_gr_oclass_get(struct nvkm_oclass *oclass, int index)
54 {
55 	struct nvkm_gr *gr = nvkm_gr(oclass->engine);
56 	int c = 0;
57 
58 	if (gr->func->object_get) {
59 		int ret = gr->func->object_get(gr, index, &oclass->base);
60 		if (oclass->base.oclass)
61 			return index;
62 		return ret;
63 	}
64 
65 	while (gr->func->sclass[c].oclass) {
66 		if (c++ == index) {
67 			oclass->base = gr->func->sclass[index];
68 			return index;
69 		}
70 	}
71 
72 	return c;
73 }
74 
75 static int
76 nvkm_gr_cclass_new(struct nvkm_fifo_chan *chan,
77 		   const struct nvkm_oclass *oclass,
78 		   struct nvkm_object **pobject)
79 {
80 	struct nvkm_gr *gr = nvkm_gr(oclass->engine);
81 	if (gr->func->chan_new)
82 		return gr->func->chan_new(gr, chan, oclass, pobject);
83 	return 0;
84 }
85 
86 static void
87 nvkm_gr_intr(struct nvkm_engine *engine)
88 {
89 	struct nvkm_gr *gr = nvkm_gr(engine);
90 	gr->func->intr(gr);
91 }
92 
93 static int
94 nvkm_gr_oneinit(struct nvkm_engine *engine)
95 {
96 	struct nvkm_gr *gr = nvkm_gr(engine);
97 	if (gr->func->oneinit)
98 		return gr->func->oneinit(gr);
99 	return 0;
100 }
101 
102 static int
103 nvkm_gr_init(struct nvkm_engine *engine)
104 {
105 	struct nvkm_gr *gr = nvkm_gr(engine);
106 	return gr->func->init(gr);
107 }
108 
109 static void *
110 nvkm_gr_dtor(struct nvkm_engine *engine)
111 {
112 	struct nvkm_gr *gr = nvkm_gr(engine);
113 	if (gr->func->dtor)
114 		return gr->func->dtor(gr);
115 	return gr;
116 }
117 
118 static const struct nvkm_engine_func
119 nvkm_gr = {
120 	.dtor = nvkm_gr_dtor,
121 	.oneinit = nvkm_gr_oneinit,
122 	.init = nvkm_gr_init,
123 	.intr = nvkm_gr_intr,
124 	.tile = nvkm_gr_tile,
125 	.fifo.cclass = nvkm_gr_cclass_new,
126 	.fifo.sclass = nvkm_gr_oclass_get,
127 };
128 
129 int
130 nvkm_gr_ctor(const struct nvkm_gr_func *func, struct nvkm_device *device,
131 	     int index, bool enable, struct nvkm_gr *gr)
132 {
133 	gr->func = func;
134 	return nvkm_engine_ctor(&nvkm_gr, device, index, enable, &gr->engine);
135 }
136