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 "priv.h"
25
26 const struct nvkm_mc_map
27 nv04_mc_reset[] = {
28 { 0x00001000, NVKM_ENGINE_GR },
29 { 0x00000100, NVKM_ENGINE_FIFO },
30 {}
31 };
32
33 static void
nv04_mc_device_disable(struct nvkm_mc * mc,u32 mask)34 nv04_mc_device_disable(struct nvkm_mc *mc, u32 mask)
35 {
36 nvkm_mask(mc->subdev.device, 0x000200, mask, 0x00000000);
37 }
38
39 static void
nv04_mc_device_enable(struct nvkm_mc * mc,u32 mask)40 nv04_mc_device_enable(struct nvkm_mc *mc, u32 mask)
41 {
42 struct nvkm_device *device = mc->subdev.device;
43
44 nvkm_mask(device, 0x000200, mask, mask);
45 nvkm_rd32(device, 0x000200);
46 }
47
48 static bool
nv04_mc_device_enabled(struct nvkm_mc * mc,u32 mask)49 nv04_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
50 {
51 return (nvkm_rd32(mc->subdev.device, 0x000200) & mask) == mask;
52 }
53
54 const struct nvkm_mc_device_func
55 nv04_mc_device = {
56 .enabled = nv04_mc_device_enabled,
57 .enable = nv04_mc_device_enable,
58 .disable = nv04_mc_device_disable,
59 };
60
61 static const struct nvkm_intr_data
62 nv04_mc_intrs[] = {
63 { NVKM_ENGINE_DISP , 0, 0, 0x01010000, true },
64 { NVKM_ENGINE_GR , 0, 0, 0x00001000, true },
65 { NVKM_ENGINE_FIFO , 0, 0, 0x00000100 },
66 { NVKM_SUBDEV_BUS , 0, 0, 0x10000000, true },
67 { NVKM_SUBDEV_TIMER, 0, 0, 0x00100000, true },
68 {}
69 };
70
71 void
nv04_mc_intr_rearm(struct nvkm_intr * intr)72 nv04_mc_intr_rearm(struct nvkm_intr *intr)
73 {
74 struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
75 int leaf;
76
77 for (leaf = 0; leaf < intr->leaves; leaf++)
78 nvkm_wr32(mc->subdev.device, 0x000140 + (leaf * 4), 0x00000001);
79 }
80
81 void
nv04_mc_intr_unarm(struct nvkm_intr * intr)82 nv04_mc_intr_unarm(struct nvkm_intr *intr)
83 {
84 struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
85 int leaf;
86
87 for (leaf = 0; leaf < intr->leaves; leaf++)
88 nvkm_wr32(mc->subdev.device, 0x000140 + (leaf * 4), 0x00000000);
89
90 nvkm_rd32(mc->subdev.device, 0x000140);
91 }
92
93 bool
nv04_mc_intr_pending(struct nvkm_intr * intr)94 nv04_mc_intr_pending(struct nvkm_intr *intr)
95 {
96 struct nvkm_mc *mc = container_of(intr, typeof(*mc), intr);
97 bool pending = false;
98 int leaf;
99
100 for (leaf = 0; leaf < intr->leaves; leaf++) {
101 intr->stat[leaf] = nvkm_rd32(mc->subdev.device, 0x000100 + (leaf * 4));
102 if (intr->stat[leaf])
103 pending = true;
104 }
105
106 return pending;
107 }
108
109 const struct nvkm_intr_func
110 nv04_mc_intr = {
111 .pending = nv04_mc_intr_pending,
112 .unarm = nv04_mc_intr_unarm,
113 .rearm = nv04_mc_intr_rearm,
114 };
115
116 void
nv04_mc_init(struct nvkm_mc * mc)117 nv04_mc_init(struct nvkm_mc *mc)
118 {
119 struct nvkm_device *device = mc->subdev.device;
120 nvkm_wr32(device, 0x000200, 0xffffffff); /* everything enabled */
121 nvkm_wr32(device, 0x001850, 0x00000001); /* disable rom access */
122 }
123
124 static const struct nvkm_mc_func
125 nv04_mc = {
126 .init = nv04_mc_init,
127 .intr = &nv04_mc_intr,
128 .intrs = nv04_mc_intrs,
129 .device = &nv04_mc_device,
130 .reset = nv04_mc_reset,
131 };
132
133 int
nv04_mc_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_mc ** pmc)134 nv04_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
135 {
136 return nvkm_mc_new_(&nv04_mc, device, type, inst, pmc);
137 }
138