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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Broadcom
*/
/**
* DOC: VC4 V3D performance monitor module
*
* The V3D block provides 16 hardware counters which can count various events.
*/
#include "vc4_drv.h"
#include "vc4_regs.h"
#define VC4_PERFMONID_MIN 1
#define VC4_PERFMONID_MAX U32_MAX
void vc4_perfmon_get(struct vc4_perfmon *perfmon)
{
struct vc4_dev *vc4;
if (!perfmon)
return;
vc4 = perfmon->dev;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
refcount_inc(&perfmon->refcnt);
}
void vc4_perfmon_put(struct vc4_perfmon *perfmon)
{
struct vc4_dev *vc4;
if (!perfmon)
return;
vc4 = perfmon->dev;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
if (refcount_dec_and_test(&perfmon->refcnt))
kfree(perfmon);
}
void vc4_perfmon_start(struct vc4_dev *vc4, struct vc4_perfmon *perfmon)
{
unsigned int i;
u32 mask;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
if (WARN_ON_ONCE(!perfmon || vc4->active_perfmon))
return;
for (i = 0; i < perfmon->ncounters; i++)
V3D_WRITE(V3D_PCTRS(i), perfmon->events[i]);
mask = GENMASK(perfmon->ncounters - 1, 0);
V3D_WRITE(V3D_PCTRC, mask);
V3D_WRITE(V3D_PCTRE, V3D_PCTRE_EN | mask);
vc4->active_perfmon = perfmon;
}
void vc4_perfmon_stop(struct vc4_dev *vc4, struct vc4_perfmon *perfmon,
bool capture)
{
unsigned int i;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
if (WARN_ON_ONCE(!vc4->active_perfmon ||
perfmon != vc4->active_perfmon))
return;
if (capture) {
for (i = 0; i < perfmon->ncounters; i++)
perfmon->counters[i] += V3D_READ(V3D_PCTR(i));
}
V3D_WRITE(V3D_PCTRE, 0);
vc4->active_perfmon = NULL;
}
struct vc4_perfmon *vc4_perfmon_find(struct vc4_file *vc4file, int id)
{
struct vc4_dev *vc4 = vc4file->dev;
struct vc4_perfmon *perfmon;
if (WARN_ON_ONCE(vc4->is_vc5))
return NULL;
mutex_lock(&vc4file->perfmon.lock);
perfmon = idr_find(&vc4file->perfmon.idr, id);
vc4_perfmon_get(perfmon);
mutex_unlock(&vc4file->perfmon.lock);
return perfmon;
}
void vc4_perfmon_open_file(struct vc4_file *vc4file)
{
struct vc4_dev *vc4 = vc4file->dev;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
mutex_init(&vc4file->perfmon.lock);
idr_init_base(&vc4file->perfmon.idr, VC4_PERFMONID_MIN);
vc4file->dev = vc4;
}
static int vc4_perfmon_idr_del(int id, void *elem, void *data)
{
struct vc4_perfmon *perfmon = elem;
vc4_perfmon_put(perfmon);
return 0;
}
void vc4_perfmon_close_file(struct vc4_file *vc4file)
{
struct vc4_dev *vc4 = vc4file->dev;
if (WARN_ON_ONCE(vc4->is_vc5))
return;
mutex_lock(&vc4file->perfmon.lock);
idr_for_each(&vc4file->perfmon.idr, vc4_perfmon_idr_del, NULL);
idr_destroy(&vc4file->perfmon.idr);
mutex_unlock(&vc4file->perfmon.lock);
mutex_destroy(&vc4file->perfmon.lock);
}
int vc4_perfmon_create_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_file *vc4file = file_priv->driver_priv;
struct drm_vc4_perfmon_create *req = data;
struct vc4_perfmon *perfmon;
unsigned int i;
int ret;
if (WARN_ON_ONCE(vc4->is_vc5))
return -ENODEV;
if (!vc4->v3d) {
DRM_DEBUG("Creating perfmon no VC4 V3D probed\n");
return -ENODEV;
}
/* Number of monitored counters cannot exceed HW limits. */
if (req->ncounters > DRM_VC4_MAX_PERF_COUNTERS ||
!req->ncounters)
return -EINVAL;
/* Make sure all events are valid. */
for (i = 0; i < req->ncounters; i++) {
if (req->events[i] >= VC4_PERFCNT_NUM_EVENTS)
return -EINVAL;
}
perfmon = kzalloc(struct_size(perfmon, counters, req->ncounters),
GFP_KERNEL);
if (!perfmon)
return -ENOMEM;
perfmon->dev = vc4;
for (i = 0; i < req->ncounters; i++)
perfmon->events[i] = req->events[i];
perfmon->ncounters = req->ncounters;
refcount_set(&perfmon->refcnt, 1);
mutex_lock(&vc4file->perfmon.lock);
ret = idr_alloc(&vc4file->perfmon.idr, perfmon, VC4_PERFMONID_MIN,
VC4_PERFMONID_MAX, GFP_KERNEL);
mutex_unlock(&vc4file->perfmon.lock);
if (ret < 0) {
kfree(perfmon);
return ret;
}
req->id = ret;
return 0;
}
int vc4_perfmon_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_file *vc4file = file_priv->driver_priv;
struct drm_vc4_perfmon_destroy *req = data;
struct vc4_perfmon *perfmon;
if (WARN_ON_ONCE(vc4->is_vc5))
return -ENODEV;
if (!vc4->v3d) {
DRM_DEBUG("Destroying perfmon no VC4 V3D probed\n");
return -ENODEV;
}
mutex_lock(&vc4file->perfmon.lock);
perfmon = idr_remove(&vc4file->perfmon.idr, req->id);
mutex_unlock(&vc4file->perfmon.lock);
if (!perfmon)
return -EINVAL;
vc4_perfmon_put(perfmon);
return 0;
}
int vc4_perfmon_get_values_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vc4_dev *vc4 = to_vc4_dev(dev);
struct vc4_file *vc4file = file_priv->driver_priv;
struct drm_vc4_perfmon_get_values *req = data;
struct vc4_perfmon *perfmon;
int ret;
if (WARN_ON_ONCE(vc4->is_vc5))
return -ENODEV;
if (!vc4->v3d) {
DRM_DEBUG("Getting perfmon no VC4 V3D probed\n");
return -ENODEV;
}
mutex_lock(&vc4file->perfmon.lock);
perfmon = idr_find(&vc4file->perfmon.idr, req->id);
vc4_perfmon_get(perfmon);
mutex_unlock(&vc4file->perfmon.lock);
if (!perfmon)
return -EINVAL;
if (copy_to_user(u64_to_user_ptr(req->values_ptr), perfmon->counters,
perfmon->ncounters * sizeof(u64)))
ret = -EFAULT;
else
ret = 0;
vc4_perfmon_put(perfmon);
return ret;
}
|
