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
|
/*
* Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/device.h>
#include <nvgpu/vgpu/vgpu.h>
#include "os/linux/platform_gk20a.h"
#include "os/linux/os_linux.h"
#include "vgpu/ecc_vgpu.h"
static ssize_t vgpu_load_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct gk20a *g = get_gk20a(dev);
struct tegra_vgpu_cmd_msg msg = {0};
struct tegra_vgpu_gpu_load_params *p = &msg.params.gpu_load;
int err;
msg.cmd = TEGRA_VGPU_CMD_GET_GPU_LOAD;
msg.handle = vgpu_get_handle(g);
err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
if (err)
return err;
return snprintf(buf, PAGE_SIZE, "%u\n", p->load);
}
static DEVICE_ATTR(load, S_IRUGO, vgpu_load_show, NULL);
static ssize_t vgpu_ecc_stat_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct gk20a *g = get_gk20a(dev);
struct tegra_vgpu_cmd_msg msg = {0};
struct tegra_vgpu_ecc_counter_params *p = &msg.params.ecc_counter;
struct dev_ext_attribute *ext_attr = container_of(attr,
struct dev_ext_attribute, attr);
struct vgpu_ecc_stat *ecc_stat = ext_attr->var;
int err;
p->ecc_id = ecc_stat->ecc_id;
msg.cmd = TEGRA_VGPU_CMD_GET_ECC_COUNTER_VALUE;
msg.handle = vgpu_get_handle(g);
err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
err = err ? err : msg.ret;
if (unlikely(err)) {
nvgpu_err(g, "ecc: cannot get ECC counter value: %d", err);
return err;
}
return snprintf(buf, PAGE_SIZE, "%u\n", p->value);
}
static int vgpu_create_ecc_sysfs(struct device *dev)
{
struct gk20a *g = get_gk20a(dev);
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
struct vgpu_ecc_stat *stats;
struct dev_ext_attribute *attrs;
int err, i, count;
err = vgpu_ecc_get_info(g);
if (unlikely(err)) {
nvgpu_err(g, "ecc: cannot get ECC info: %d", err);
return err;
}
stats = priv->ecc_stats;
count = priv->ecc_stats_count;
attrs = nvgpu_kzalloc(g, count * sizeof(*attrs));
if (unlikely(!attrs)) {
nvgpu_err(g, "ecc: no memory");
vgpu_ecc_remove_info(g);
return -ENOMEM;
}
for (i = 0; i < count; i++) {
sysfs_attr_init(&attrs[i].attr.attr);
attrs[i].attr.attr.name = stats[i].name;
attrs[i].attr.attr.mode = VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
attrs[i].attr.show = vgpu_ecc_stat_show;
attrs[i].attr.store = NULL;
attrs[i].var = &stats[i];
err = device_create_file(dev, &attrs[i].attr);
if (unlikely(err)) {
nvgpu_warn(g, "ecc: cannot create file \"%s\": %d",
stats[i].name, err);
}
}
l->ecc_attrs = attrs;
return 0;
}
static void vgpu_remove_ecc_sysfs(struct device *dev)
{
struct gk20a *g = get_gk20a(dev);
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
int i;
if (l->ecc_attrs) {
for (i = 0; i < priv->ecc_stats_count; i++)
device_remove_file(dev, &l->ecc_attrs[i].attr);
nvgpu_kfree(g, l->ecc_attrs);
l->ecc_attrs = NULL;
}
vgpu_ecc_remove_info(g);
}
void vgpu_create_sysfs(struct device *dev)
{
if (device_create_file(dev, &dev_attr_load))
dev_err(dev, "Failed to create vgpu sysfs attributes!\n");
vgpu_create_ecc_sysfs(dev);
}
void vgpu_remove_sysfs(struct device *dev)
{
device_remove_file(dev, &dev_attr_load);
vgpu_remove_ecc_sysfs(dev);
}
|
