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
|
/*
* 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_mc *mc, u32 data)
{
if (mc->func->unk260)
mc->func->unk260(mc, data);
}
void
nvkm_mc_intr_unarm(struct nvkm_mc *mc)
{
return mc->func->intr_unarm(mc);
}
void
nvkm_mc_intr_rearm(struct nvkm_mc *mc)
{
return mc->func->intr_rearm(mc);
}
static u32
nvkm_mc_intr_mask(struct nvkm_mc *mc)
{
u32 intr = mc->func->intr_mask(mc);
if (WARN_ON_ONCE(intr == 0xffffffff))
intr = 0; /* likely fallen off the bus */
return intr;
}
void
nvkm_mc_intr(struct nvkm_mc *mc, bool *handled)
{
struct nvkm_device *device = mc->subdev.device;
struct nvkm_subdev *subdev;
const struct nvkm_mc_map *map = mc->func->intr;
u32 stat, intr = nvkm_mc_intr_mask(mc);
u64 subdevs;
stat = nvkm_top_intr(device->top, 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);
}
while (map->stat) {
if (intr & map->stat) {
subdev = nvkm_device_subdev(device, map->unit);
if (subdev)
nvkm_subdev_intr(subdev);
stat &= ~map->stat;
}
map++;
}
if (stat)
nvkm_error(&mc->subdev, "intr %08x\n", stat);
*handled = intr != 0;
}
static void
nvkm_mc_reset_(struct nvkm_mc *mc, enum nvkm_devidx devidx)
{
struct nvkm_device *device = mc->subdev.device;
const struct nvkm_mc_map *map;
u64 pmc_enable;
if (!(pmc_enable = nvkm_top_reset(device->top, devidx))) {
for (map = mc->func->reset; map && map->stat; map++) {
if (map->unit == devidx) {
pmc_enable = map->stat;
break;
}
}
}
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_reset(struct nvkm_mc *mc, enum nvkm_devidx devidx)
{
if (likely(mc))
nvkm_mc_reset_(mc, devidx);
}
static int
nvkm_mc_fini(struct nvkm_subdev *subdev, bool suspend)
{
struct nvkm_mc *mc = nvkm_mc(subdev);
nvkm_mc_intr_unarm(mc);
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(mc);
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,
};
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_subdev_ctor(&nvkm_mc, device, index, &mc->subdev);
mc->func = func;
return 0;
}
|
