1 // SPDX-License-Identifier: GPL-2.0
2
3 /* Copyright (C) 2021 Linaro Ltd. */
4
5 #include <linux/kernel.h>
6 #include <linux/types.h>
7 #include <linux/device.h>
8 #include <linux/sysfs.h>
9
10 #include "ipa.h"
11 #include "ipa_version.h"
12 #include "ipa_sysfs.h"
13
ipa_version_string(struct ipa * ipa)14 static const char *ipa_version_string(struct ipa *ipa)
15 {
16 switch (ipa->version) {
17 case IPA_VERSION_3_0:
18 return "3.0";
19 case IPA_VERSION_3_1:
20 return "3.1";
21 case IPA_VERSION_3_5:
22 return "3.5";
23 case IPA_VERSION_3_5_1:
24 return "3.5.1";
25 case IPA_VERSION_4_0:
26 return "4.0";
27 case IPA_VERSION_4_1:
28 return "4.1";
29 case IPA_VERSION_4_2:
30 return "4.2";
31 case IPA_VERSION_4_5:
32 return "4.5";
33 case IPA_VERSION_4_7:
34 return "4.7";
35 case IPA_VERSION_4_9:
36 return "4.9";
37 case IPA_VERSION_4_11:
38 return "4.11";
39 default:
40 return "0.0"; /* Won't happen (checked at probe time) */
41 }
42 }
43
44 static ssize_t
version_show(struct device * dev,struct device_attribute * attr,char * buf)45 version_show(struct device *dev, struct device_attribute *attr, char *buf)
46 {
47 struct ipa *ipa = dev_get_drvdata(dev);
48
49 return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_version_string(ipa));
50 }
51
52 static DEVICE_ATTR_RO(version);
53
54 static struct attribute *ipa_attrs[] = {
55 &dev_attr_version.attr,
56 NULL
57 };
58
59 const struct attribute_group ipa_attribute_group = {
60 .attrs = ipa_attrs,
61 };
62
ipa_offload_string(struct ipa * ipa)63 static const char *ipa_offload_string(struct ipa *ipa)
64 {
65 return ipa->version < IPA_VERSION_4_5 ? "MAPv4" : "MAPv5";
66 }
67
rx_offload_show(struct device * dev,struct device_attribute * attr,char * buf)68 static ssize_t rx_offload_show(struct device *dev,
69 struct device_attribute *attr, char *buf)
70 {
71 struct ipa *ipa = dev_get_drvdata(dev);
72
73 return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_offload_string(ipa));
74 }
75
76 static DEVICE_ATTR_RO(rx_offload);
77
tx_offload_show(struct device * dev,struct device_attribute * attr,char * buf)78 static ssize_t tx_offload_show(struct device *dev,
79 struct device_attribute *attr, char *buf)
80 {
81 struct ipa *ipa = dev_get_drvdata(dev);
82
83 return scnprintf(buf, PAGE_SIZE, "%s\n", ipa_offload_string(ipa));
84 }
85
86 static DEVICE_ATTR_RO(tx_offload);
87
88 static struct attribute *ipa_feature_attrs[] = {
89 &dev_attr_rx_offload.attr,
90 &dev_attr_tx_offload.attr,
91 NULL
92 };
93
94 const struct attribute_group ipa_feature_attribute_group = {
95 .name = "feature",
96 .attrs = ipa_feature_attrs,
97 };
98
99 static ssize_t
ipa_endpoint_id_show(struct ipa * ipa,char * buf,enum ipa_endpoint_name name)100 ipa_endpoint_id_show(struct ipa *ipa, char *buf, enum ipa_endpoint_name name)
101 {
102 u32 endpoint_id = ipa->name_map[name]->endpoint_id;
103
104 return scnprintf(buf, PAGE_SIZE, "%u\n", endpoint_id);
105 }
106
rx_endpoint_id_show(struct device * dev,struct device_attribute * attr,char * buf)107 static ssize_t rx_endpoint_id_show(struct device *dev,
108 struct device_attribute *attr, char *buf)
109 {
110 struct ipa *ipa = dev_get_drvdata(dev);
111
112 return ipa_endpoint_id_show(ipa, buf, IPA_ENDPOINT_AP_MODEM_RX);
113 }
114
115 static DEVICE_ATTR_RO(rx_endpoint_id);
116
tx_endpoint_id_show(struct device * dev,struct device_attribute * attr,char * buf)117 static ssize_t tx_endpoint_id_show(struct device *dev,
118 struct device_attribute *attr, char *buf)
119 {
120 struct ipa *ipa = dev_get_drvdata(dev);
121
122 return ipa_endpoint_id_show(ipa, buf, IPA_ENDPOINT_AP_MODEM_TX);
123 }
124
125 static DEVICE_ATTR_RO(tx_endpoint_id);
126
127 static struct attribute *ipa_modem_attrs[] = {
128 &dev_attr_rx_endpoint_id.attr,
129 &dev_attr_tx_endpoint_id.attr,
130 NULL
131 };
132
133 const struct attribute_group ipa_modem_attribute_group = {
134 .name = "modem",
135 .attrs = ipa_modem_attrs,
136 };
137