1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
#include <core/option.h>
#include <subdev/top.h>
void
nvkm_mc_unk260(struct nvkm_device *device, u32 data)
{
struct nvkm_mc *mc = device->mc;
if (likely(mc) && mc->func->unk260)
mc->func->unk260(mc, data);
}
void
nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx, bool en)
{
struct nvkm_mc *mc = device->mc;
const struct nvkm_mc_map *map;
if (likely(mc) && mc->func->intr_mask) {
u32 mask = nvkm_top_intr_mask(device, devidx);
for (map = mc->func->intr; !mask && map->stat; map++) {
if (map->unit == devidx)
mask = map->stat;
}
mc->func->intr_mask(mc, mask, en ? mask : 0);
}
}
void
nvkm_mc_intr_unarm(struct nvkm_device *device)
{
struct nvkm_mc *mc = device->mc;
if (likely(mc))
mc->func->intr_unarm(mc);
}
void
nvkm_mc_intr_rearm(struct nvkm_device *device)
{
struct nvkm_mc *mc = device->mc;
if (likely(mc))
mc->func->intr_rearm(mc);
}
static u32
nvkm_mc_intr_stat(struct nvkm_mc *mc)
{
u32 intr = mc->func->intr_stat(mc);
if (WARN_ON_ONCE(intr == 0xffffffff))
intr = 0; /* likely fallen off the bus */
return intr;
}
void
nvkm_mc_intr(struct nvkm_device *device, bool *handled)
{
struct nvkm_mc *mc = device->mc;
struct nvkm_subdev *subdev;
const struct nvkm_mc_map *map;
u32 stat, intr;
u64 subdevs;
if (unlikely(!mc))
return;
intr = nvkm_mc_intr_stat(mc);
stat = nvkm_top_intr(device, intr, &subdevs);
while (subdevs) {
enum nvkm_devidx subidx = __ffs64(subdevs);
subdev = nvkm_device_subdev(device, subidx);
if (subdev)
nvkm_subdev_intr(subdev);
subdevs &= ~BIT_ULL(subidx);
}
for (map = mc->func->intr; map->stat; map++) {
if (intr & map->stat) {
subdev = nvkm_device_subdev(device, map->unit);
if (subdev)
nvkm_subdev_intr(subdev);
stat &= ~map->stat;
}
}
if (stat)
nvkm_error(&mc->subdev, "intr %08x\n", stat);
*handled = intr != 0;
if (mc->func->intr_hack)
mc->func->intr_hack(mc, handled);
}
static u32
nvkm_mc_reset_mask(struct nvkm_device *device, bool isauto,
enum nvkm_devidx devidx)
{
struct nvkm_mc *mc = device->mc;
const struct nvkm_mc_map *map;
u64 pmc_enable = 0;
if (likely(mc)) {
if (!(pmc_enable = nvkm_top_reset(device, devidx))) {
for (map = mc->func->reset; map && map->stat; map++) {
if (!isauto || !map->noauto) {
if (map->unit == devidx) {
pmc_enable = map->stat;
break;
}
}
}
}
}
return pmc_enable;
}
void
nvkm_mc_reset(struct nvkm_device *device, enum nvkm_devidx devidx)
{
u64 pmc_enable = nvkm_mc_reset_mask(device, true, devidx);
if (pmc_enable) {
nvkm_mask(device, 0x000200, pmc_enable, 0x00000000);
nvkm_mask(device, 0x000200, pmc_enable, pmc_enable);
nvkm_rd32(device, 0x000200);
}
}
void
nvkm_mc_disable(struct nvkm_device *device, enum nvkm_devidx devidx)
{
u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx);
if (pmc_enable)
nvkm_mask(device, 0x000200, pmc_enable, 0x00000000);
}
void
nvkm_mc_enable(struct nvkm_device *device, enum nvkm_devidx devidx)
{
u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx);
if (pmc_enable) {
nvkm_mask(device, 0x000200, pmc_enable, pmc_enable);
nvkm_rd32(device, 0x000200);
}
}
bool
nvkm_mc_enabled(struct nvkm_device *device, enum nvkm_devidx devidx)
{
u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx);
return (pmc_enable != 0) &&
((nvkm_rd32(device, 0x000200) & pmc_enable) == pmc_enable);
}
static int
nvkm_mc_fini(struct nvkm_subdev *subdev, bool suspend)
{
nvkm_mc_intr_unarm(subdev->device);
return 0;
}
static int
nvkm_mc_init(struct nvkm_subdev *subdev)
{
struct nvkm_mc *mc = nvkm_mc(subdev);
if (mc->func->init)
mc->func->init(mc);
nvkm_mc_intr_rearm(subdev->device);
return 0;
}
static void *
nvkm_mc_dtor(struct nvkm_subdev *subdev)
{
return nvkm_mc(subdev);
}
static const struct nvkm_subdev_func
nvkm_mc = {
.dtor = nvkm_mc_dtor,
.init = nvkm_mc_init,
.fini = nvkm_mc_fini,
};
void
nvkm_mc_ctor(const struct nvkm_mc_func *func, struct nvkm_device *device,
int index, struct nvkm_mc *mc)
{
nvkm_subdev_ctor(&nvkm_mc, device, index, &mc->subdev);
mc->func = func;
}
int
nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
int index, struct nvkm_mc **pmc)
{
struct nvkm_mc *mc;
if (!(mc = *pmc = kzalloc(sizeof(*mc), GFP_KERNEL)))
return -ENOMEM;
nvkm_mc_ctor(func, device, index, *pmc);
return 0;
}
|
