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
26const struct nvkm_mc_map
27nv04_mc_reset[] = {
28	{ 0x00001000, NVKM_ENGINE_GR },
29	{ 0x00000100, NVKM_ENGINE_FIFO },
30	{}
31};
32
33static void
34nv04_mc_device_disable(struct nvkm_mc *mc, u32 mask)
35{
36	nvkm_mask(mc->subdev.device, 0x000200, mask, 0x00000000);
37}
38
39static void
40nv04_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
48static bool
49nv04_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
50{
51	return (nvkm_rd32(mc->subdev.device, 0x000200) & mask) == mask;
52}
53
54const struct nvkm_mc_device_func
55nv04_mc_device = {
56	.enabled = nv04_mc_device_enabled,
57	.enable = nv04_mc_device_enable,
58	.disable = nv04_mc_device_disable,
59};
60
61static const struct nvkm_intr_data
62nv04_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
71void
72nv04_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
81void
82nv04_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
93bool
94nv04_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
109const struct nvkm_intr_func
110nv04_mc_intr = {
111	.pending = nv04_mc_intr_pending,
112	.unarm = nv04_mc_intr_unarm,
113	.rearm = nv04_mc_intr_rearm,
114};
115
116void
117nv04_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
124static const struct nvkm_mc_func
125nv04_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
133int
134nv04_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