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
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2021-2024 Linaro Ltd. */
#include <linux/types.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include "ipa.h"
#include "ipa_version.h"
#include "ipa_sysfs.h"
static const char *ipa_version_string(struct ipa *ipa)
{
switch (ipa->version) {
case IPA_VERSION_3_0:
return "3.0";
case IPA_VERSION_3_1:
return "3.1";
case IPA_VERSION_3_5:
return "3.5";
case IPA_VERSION_3_5_1:
return "3.5.1";
case IPA_VERSION_4_0:
return "4.0";
case IPA_VERSION_4_1:
return "4.1";
case IPA_VERSION_4_2:
return "4.2";
case IPA_VERSION_4_5:
return "4.5";
case IPA_VERSION_4_7:
return "4.7";
case IPA_VERSION_4_9:
return "4.9";
case IPA_VERSION_4_11:
return "4.11";
case IPA_VERSION_5_0:
return "5.0";
default:
return "0.0"; /* Won't happen (checked at probe time) */
}
}
static ssize_t
version_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct ipa *ipa = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ipa_version_string(ipa));
}
static DEVICE_ATTR_RO(version);
static struct attribute *ipa_attrs[] = {
&dev_attr_version.attr,
NULL
};
const struct attribute_group ipa_attribute_group = {
.attrs = ipa_attrs,
};
static const char *ipa_offload_string(struct ipa *ipa)
{
return ipa->version < IPA_VERSION_4_5 ? "MAPv4" : "MAPv5";
}
static ssize_t rx_offload_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ipa *ipa = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ipa_offload_string(ipa));
}
static DEVICE_ATTR_RO(rx_offload);
static ssize_t tx_offload_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ipa *ipa = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ipa_offload_string(ipa));
}
static DEVICE_ATTR_RO(tx_offload);
static struct attribute *ipa_feature_attrs[] = {
&dev_attr_rx_offload.attr,
&dev_attr_tx_offload.attr,
NULL
};
const struct attribute_group ipa_feature_attribute_group = {
.name = "feature",
.attrs = ipa_feature_attrs,
};
static umode_t ipa_endpoint_id_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct ipa *ipa = dev_get_drvdata(kobj_to_dev(kobj));
struct device_attribute *dev_attr;
struct dev_ext_attribute *ea;
bool visible;
/* An endpoint id attribute is only visible if it's defined */
dev_attr = container_of(attr, struct device_attribute, attr);
ea = container_of(dev_attr, struct dev_ext_attribute, attr);
visible = !!ipa->name_map[(enum ipa_endpoint_name)(uintptr_t)ea->var];
return visible ? attr->mode : 0;
}
static ssize_t endpoint_id_attr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ipa *ipa = dev_get_drvdata(dev);
struct ipa_endpoint *endpoint;
struct dev_ext_attribute *ea;
ea = container_of(attr, struct dev_ext_attribute, attr);
endpoint = ipa->name_map[(enum ipa_endpoint_name)(uintptr_t)ea->var];
return sysfs_emit(buf, "%u\n", endpoint->endpoint_id);
}
#define ENDPOINT_ID_ATTR(_n, _endpoint_name) \
static struct dev_ext_attribute dev_attr_endpoint_id_ ## _n = { \
.attr = __ATTR(_n, 0444, endpoint_id_attr_show, NULL), \
.var = (void *)(_endpoint_name), \
}
ENDPOINT_ID_ATTR(modem_rx, IPA_ENDPOINT_AP_MODEM_RX);
ENDPOINT_ID_ATTR(modem_tx, IPA_ENDPOINT_AP_MODEM_TX);
static struct attribute *ipa_endpoint_id_attrs[] = {
&dev_attr_endpoint_id_modem_rx.attr.attr,
&dev_attr_endpoint_id_modem_tx.attr.attr,
NULL
};
const struct attribute_group ipa_endpoint_id_attribute_group = {
.name = "endpoint_id",
.is_visible = ipa_endpoint_id_is_visible,
.attrs = ipa_endpoint_id_attrs,
};
/* Reuse endpoint ID attributes for the legacy modem endpoint IDs */
#define MODEM_ATTR(_n, _endpoint_name) \
static struct dev_ext_attribute dev_attr_modem_ ## _n = { \
.attr = __ATTR(_n, 0444, endpoint_id_attr_show, NULL), \
.var = (void *)(_endpoint_name), \
}
MODEM_ATTR(rx_endpoint_id, IPA_ENDPOINT_AP_MODEM_RX);
MODEM_ATTR(tx_endpoint_id, IPA_ENDPOINT_AP_MODEM_TX);
static struct attribute *ipa_modem_attrs[] = {
&dev_attr_modem_rx_endpoint_id.attr.attr,
&dev_attr_modem_tx_endpoint_id.attr.attr,
NULL,
};
const struct attribute_group ipa_modem_attribute_group = {
.name = "modem",
.attrs = ipa_modem_attrs,
};
|
