This source file includes following definitions.
- ixgbe_dbg_common_ops_read
- ixgbe_dbg_reg_ops_read
- ixgbe_dbg_reg_ops_write
- ixgbe_dbg_netdev_ops_read
- ixgbe_dbg_netdev_ops_write
- ixgbe_dbg_adapter_init
- ixgbe_dbg_adapter_exit
- ixgbe_dbg_init
- ixgbe_dbg_exit
1
2
3
4 #include <linux/debugfs.h>
5 #include <linux/module.h>
6
7 #include "ixgbe.h"
8
9 static struct dentry *ixgbe_dbg_root;
10
11 static char ixgbe_dbg_reg_ops_buf[256] = "";
12
13 static ssize_t ixgbe_dbg_common_ops_read(struct file *filp, char __user *buffer,
14 size_t count, loff_t *ppos,
15 char *dbg_buf)
16 {
17 struct ixgbe_adapter *adapter = filp->private_data;
18 char *buf;
19 int len;
20
21
22 if (*ppos != 0)
23 return 0;
24
25 buf = kasprintf(GFP_KERNEL, "%s: %s\n",
26 adapter->netdev->name, dbg_buf);
27 if (!buf)
28 return -ENOMEM;
29
30 if (count < strlen(buf)) {
31 kfree(buf);
32 return -ENOSPC;
33 }
34
35 len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
36
37 kfree(buf);
38 return len;
39 }
40
41
42
43
44
45
46
47
48 static ssize_t ixgbe_dbg_reg_ops_read(struct file *filp, char __user *buffer,
49 size_t count, loff_t *ppos)
50 {
51 return ixgbe_dbg_common_ops_read(filp, buffer, count, ppos,
52 ixgbe_dbg_reg_ops_buf);
53 }
54
55
56
57
58
59
60
61
62 static ssize_t ixgbe_dbg_reg_ops_write(struct file *filp,
63 const char __user *buffer,
64 size_t count, loff_t *ppos)
65 {
66 struct ixgbe_adapter *adapter = filp->private_data;
67 int len;
68
69
70 if (*ppos != 0)
71 return 0;
72 if (count >= sizeof(ixgbe_dbg_reg_ops_buf))
73 return -ENOSPC;
74
75 len = simple_write_to_buffer(ixgbe_dbg_reg_ops_buf,
76 sizeof(ixgbe_dbg_reg_ops_buf)-1,
77 ppos,
78 buffer,
79 count);
80 if (len < 0)
81 return len;
82
83 ixgbe_dbg_reg_ops_buf[len] = '\0';
84
85 if (strncmp(ixgbe_dbg_reg_ops_buf, "write", 5) == 0) {
86 u32 reg, value;
87 int cnt;
88 cnt = sscanf(&ixgbe_dbg_reg_ops_buf[5], "%x %x", ®, &value);
89 if (cnt == 2) {
90 IXGBE_WRITE_REG(&adapter->hw, reg, value);
91 value = IXGBE_READ_REG(&adapter->hw, reg);
92 e_dev_info("write: 0x%08x = 0x%08x\n", reg, value);
93 } else {
94 e_dev_info("write <reg> <value>\n");
95 }
96 } else if (strncmp(ixgbe_dbg_reg_ops_buf, "read", 4) == 0) {
97 u32 reg, value;
98 int cnt;
99 cnt = sscanf(&ixgbe_dbg_reg_ops_buf[4], "%x", ®);
100 if (cnt == 1) {
101 value = IXGBE_READ_REG(&adapter->hw, reg);
102 e_dev_info("read 0x%08x = 0x%08x\n", reg, value);
103 } else {
104 e_dev_info("read <reg>\n");
105 }
106 } else {
107 e_dev_info("Unknown command %s\n", ixgbe_dbg_reg_ops_buf);
108 e_dev_info("Available commands:\n");
109 e_dev_info(" read <reg>\n");
110 e_dev_info(" write <reg> <value>\n");
111 }
112 return count;
113 }
114
115 static const struct file_operations ixgbe_dbg_reg_ops_fops = {
116 .owner = THIS_MODULE,
117 .open = simple_open,
118 .read = ixgbe_dbg_reg_ops_read,
119 .write = ixgbe_dbg_reg_ops_write,
120 };
121
122 static char ixgbe_dbg_netdev_ops_buf[256] = "";
123
124
125
126
127
128
129
130
131 static ssize_t ixgbe_dbg_netdev_ops_read(struct file *filp, char __user *buffer,
132 size_t count, loff_t *ppos)
133 {
134 return ixgbe_dbg_common_ops_read(filp, buffer, count, ppos,
135 ixgbe_dbg_netdev_ops_buf);
136 }
137
138
139
140
141
142
143
144
145 static ssize_t ixgbe_dbg_netdev_ops_write(struct file *filp,
146 const char __user *buffer,
147 size_t count, loff_t *ppos)
148 {
149 struct ixgbe_adapter *adapter = filp->private_data;
150 int len;
151
152
153 if (*ppos != 0)
154 return 0;
155 if (count >= sizeof(ixgbe_dbg_netdev_ops_buf))
156 return -ENOSPC;
157
158 len = simple_write_to_buffer(ixgbe_dbg_netdev_ops_buf,
159 sizeof(ixgbe_dbg_netdev_ops_buf)-1,
160 ppos,
161 buffer,
162 count);
163 if (len < 0)
164 return len;
165
166 ixgbe_dbg_netdev_ops_buf[len] = '\0';
167
168 if (strncmp(ixgbe_dbg_netdev_ops_buf, "tx_timeout", 10) == 0) {
169 adapter->netdev->netdev_ops->ndo_tx_timeout(adapter->netdev);
170 e_dev_info("tx_timeout called\n");
171 } else {
172 e_dev_info("Unknown command: %s\n", ixgbe_dbg_netdev_ops_buf);
173 e_dev_info("Available commands:\n");
174 e_dev_info(" tx_timeout\n");
175 }
176 return count;
177 }
178
179 static const struct file_operations ixgbe_dbg_netdev_ops_fops = {
180 .owner = THIS_MODULE,
181 .open = simple_open,
182 .read = ixgbe_dbg_netdev_ops_read,
183 .write = ixgbe_dbg_netdev_ops_write,
184 };
185
186
187
188
189
190 void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter)
191 {
192 const char *name = pci_name(adapter->pdev);
193
194 adapter->ixgbe_dbg_adapter = debugfs_create_dir(name, ixgbe_dbg_root);
195 debugfs_create_file("reg_ops", 0600, adapter->ixgbe_dbg_adapter,
196 adapter, &ixgbe_dbg_reg_ops_fops);
197 debugfs_create_file("netdev_ops", 0600, adapter->ixgbe_dbg_adapter,
198 adapter, &ixgbe_dbg_netdev_ops_fops);
199 }
200
201
202
203
204
205 void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter)
206 {
207 debugfs_remove_recursive(adapter->ixgbe_dbg_adapter);
208 adapter->ixgbe_dbg_adapter = NULL;
209 }
210
211
212
213
214 void ixgbe_dbg_init(void)
215 {
216 ixgbe_dbg_root = debugfs_create_dir(ixgbe_driver_name, NULL);
217 }
218
219
220
221
222 void ixgbe_dbg_exit(void)
223 {
224 debugfs_remove_recursive(ixgbe_dbg_root);
225 }