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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-debugfs.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-debugfs.c319
1 files changed, 319 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
new file mode 100644
index 000000000000..c659bd3bc346
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -0,0 +1,319 @@
1/******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 Intel Corporation. All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19 * USA
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
23 *
24 * Contact Information:
25 * Tomas Winkler <tomas.winkler@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
28
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/debugfs.h>
32
33#include <linux/ieee80211.h>
34#include <net/mac80211.h>
35
36
37#include "iwl-4965.h"
38#include "iwl-debug.h"
39#include "iwl-4965-io.h"
40
41
42/* create and remove of files */
43#define DEBUGFS_ADD_DIR(name, parent) do { \
44 dbgfs->dir_##name = debugfs_create_dir(#name, parent); \
45 if (!(dbgfs->dir_##name)) \
46 goto err; \
47} while (0)
48
49#define DEBUGFS_ADD_FILE(name, parent) do { \
50 dbgfs->dbgfs_##parent##_files.file_##name = \
51 debugfs_create_file(#name, 0644, dbgfs->dir_##parent, priv, \
52 &iwl_dbgfs_##name##_ops); \
53 if (!(dbgfs->dbgfs_##parent##_files.file_##name)) \
54 goto err; \
55} while (0)
56
57#define DEBUGFS_REMOVE(name) do { \
58 debugfs_remove(name); \
59 name = NULL; \
60} while (0);
61
62/* file operation */
63#define DEBUGFS_READ_FUNC(name) \
64static ssize_t iwl_dbgfs_##name##_read(struct file *file, \
65 char __user *user_buf, \
66 size_t count, loff_t *ppos);
67
68#define DEBUGFS_WRITE_FUNC(name) \
69static ssize_t iwl_dbgfs_##name##_write(struct file *file, \
70 const char __user *user_buf, \
71 size_t count, loff_t *ppos);
72
73
74static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
75{
76 file->private_data = inode->i_private;
77 return 0;
78}
79
80#define DEBUGFS_READ_FILE_OPS(name) \
81 DEBUGFS_READ_FUNC(name); \
82static const struct file_operations iwl_dbgfs_##name##_ops = { \
83 .read = iwl_dbgfs_##name##_read, \
84 .open = iwl_dbgfs_open_file_generic, \
85};
86
87#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
88 DEBUGFS_READ_FUNC(name); \
89 DEBUGFS_WRITE_FUNC(name); \
90static const struct file_operations iwl_dbgfs_##name##_ops = { \
91 .write = iwl_dbgfs_##name##_write, \
92 .read = iwl_dbgfs_##name##_read, \
93 .open = iwl_dbgfs_open_file_generic, \
94};
95
96
97static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
98 char __user *user_buf,
99 size_t count, loff_t *ppos) {
100
101 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
102 char buf[256];
103 int pos = 0;
104
105 pos += sprintf(buf+pos, "mgmt: %u\n", priv->tx_stats[0].cnt);
106 pos += sprintf(buf+pos, "ctrl: %u\n", priv->tx_stats[1].cnt);
107 pos += sprintf(buf+pos, "data: %u\n", priv->tx_stats[2].cnt);
108
109 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
110}
111
112static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
113 char __user *user_buf,
114 size_t count, loff_t *ppos) {
115
116 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
117 char buf[256];
118 int pos = 0;
119
120 pos += sprintf(buf+pos, "mgmt: %u\n", priv->rx_stats[0].cnt);
121 pos += sprintf(buf+pos, "ctrl: %u\n", priv->rx_stats[1].cnt);
122 pos += sprintf(buf+pos, "data: %u\n", priv->rx_stats[2].cnt);
123
124 return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
125}
126
127#define BYTE1_MASK 0x000000ff;
128#define BYTE2_MASK 0x0000ffff;
129#define BYTE3_MASK 0x00ffffff;
130static ssize_t iwl_dbgfs_sram_read(struct file *file,
131 char __user *user_buf,
132 size_t count, loff_t *ppos)
133{
134 u32 val;
135 char buf[1024];
136 ssize_t ret;
137 int i;
138 int pos = 0;
139 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
140
141 printk(KERN_DEBUG "offset is: 0x%x\tlen is: 0x%x\n",
142 priv->dbgfs->sram_offset, priv->dbgfs->sram_len);
143
144 iwl4965_grab_nic_access(priv);
145 for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
146 val = iwl4965_read_targ_mem(priv, priv->dbgfs->sram_offset + \
147 priv->dbgfs->sram_len - i);
148 if (i < 4) {
149 switch (i) {
150 case 1:
151 val &= BYTE1_MASK;
152 break;
153 case 2:
154 val &= BYTE2_MASK;
155 break;
156 case 3:
157 val &= BYTE3_MASK;
158 break;
159 }
160 }
161 pos += sprintf(buf+pos, "0x%08x ", val);
162 }
163 pos += sprintf(buf+pos, "\n");
164 iwl4965_release_nic_access(priv);
165
166 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
167 return ret;
168}
169
170static ssize_t iwl_dbgfs_sram_write(struct file *file,
171 const char __user *user_buf,
172 size_t count, loff_t *ppos)
173{
174 struct iwl_priv *priv = file->private_data;
175 char buf[64];
176 int buf_size;
177 u32 offset, len;
178
179 memset(buf, 0, sizeof(buf));
180 buf_size = min(count, sizeof(buf) - 1);
181 if (copy_from_user(buf, user_buf, buf_size))
182 return -EFAULT;
183
184 if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
185 priv->dbgfs->sram_offset = offset;
186 priv->dbgfs->sram_len = len;
187 } else {
188 priv->dbgfs->sram_offset = 0;
189 priv->dbgfs->sram_len = 0;
190 }
191
192 return count;
193}
194
195static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
196 size_t count, loff_t *ppos)
197{
198 struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
199 struct iwl4965_station_entry *station;
200 int max_sta = priv->hw_setting.max_stations;
201 char *buf;
202 int i, j, pos = 0;
203 ssize_t ret;
204 /* Add 30 for initial string */
205 const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
206 DECLARE_MAC_BUF(mac);
207
208 buf = kmalloc(bufsz, GFP_KERNEL);
209 if(!buf)
210 return -ENOMEM;
211
212 pos += sprintf(buf+pos, "num of stations: %d\n\n",
213 priv->num_stations);
214
215 for (i = 0; i < max_sta; i++) {
216 station = &priv->stations[i];
217 if (station->used) {
218 pos += sprintf(buf+pos, "station %d:\ngeneral data:\n",
219 i+1);
220 print_mac(mac, station->sta.sta.addr);
221 pos += sprintf(buf+pos, "id: %u\n",
222 station->sta.sta.sta_id);
223 pos += sprintf(buf+pos, "mode: %u\n",
224 station->sta.mode);
225 pos += sprintf(buf+pos, "flags: 0x%x\n",
226 station->sta.station_flags_msk);
227 pos += sprintf(buf+pos, "ps_status: %u\n",
228 station->ps_status);
229
230 pos += sprintf(buf+pos, "tid data:\n");
231
232 pos += sprintf(buf+pos, "seq_num\t\ttxq_id\t");
233 pos += sprintf(buf+pos, "frame_count\twait_for_ba\t");
234 pos += sprintf(buf+pos, "start_idx\tbitmap0\t");
235 pos += sprintf(buf+pos, "bitmap1\trate_n_flags\n");
236
237 for (j = 0; j < MAX_TID_COUNT; j++) {
238 pos += sprintf(buf+pos, "[%d]:\t\t%u\t",
239 j, station->tid[j].seq_number);
240 pos += sprintf(buf+pos, "%u\t\t%u\t\t%u\t\t",
241 station->tid[j].agg.txq_id,
242 station->tid[j].agg.frame_count,
243 station->tid[j].agg.wait_for_ba);
244 pos += sprintf(buf+pos, "%u\t%llu\t%u\n",
245 station->tid[j].agg.start_idx,
246 station->tid[j].agg.bitmap,
247 station->tid[j].agg.rate_n_flags);
248 }
249 pos += sprintf(buf+pos, "\n");
250 }
251 }
252
253 ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
254 kfree(buf);
255 return ret;
256}
257
258
259DEBUGFS_READ_WRITE_FILE_OPS(sram);
260DEBUGFS_READ_FILE_OPS(stations);
261DEBUGFS_READ_FILE_OPS(rx_statistics);
262DEBUGFS_READ_FILE_OPS(tx_statistics);
263
264/*
265 * Create the debugfs files and directories
266 *
267 */
268int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
269{
270 struct iwl_debugfs *dbgfs;
271
272 dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
273 if (!dbgfs) {
274 goto err;
275 }
276
277 priv->dbgfs = dbgfs;
278 dbgfs->name = name;
279 dbgfs->dir_drv = debugfs_create_dir(name, NULL);
280 if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)){
281 goto err;
282 }
283
284 DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
285 DEBUGFS_ADD_FILE(sram, data);
286 DEBUGFS_ADD_FILE(stations, data);
287 DEBUGFS_ADD_FILE(rx_statistics, data);
288 DEBUGFS_ADD_FILE(tx_statistics, data);
289
290 return 0;
291
292err:
293 IWL_ERROR("Can't open the debugfs directory\n");
294 iwl_dbgfs_unregister(priv);
295 return -ENOENT;
296}
297EXPORT_SYMBOL(iwl_dbgfs_register);
298
299/**
300 * Remove the debugfs files and directories
301 *
302 */
303void iwl_dbgfs_unregister(struct iwl_priv *priv)
304{
305 if (!(priv->dbgfs))
306 return;
307
308 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
309 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
310 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
311 DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
312 DEBUGFS_REMOVE(priv->dbgfs->dir_data);
313 DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
314 kfree(priv->dbgfs);
315 priv->dbgfs = NULL;
316}
317EXPORT_SYMBOL(iwl_dbgfs_unregister);
318
319
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 13:14:34 -0500