2 * This file is part of wl1271
4 * Copyright (C) 2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
26 #include <linux/skbuff.h>
27 #include <linux/slab.h>
35 #define WL1271_DEBUGFS_STATS_LIFETIME 1000
37 /* debugfs macros idea from mac80211 */
38 #define DEBUGFS_FORMAT_BUFFER_SIZE 100
39 static int wl1271_format_buffer(char __user *userbuf, size_t count,
40 loff_t *ppos, char *fmt, ...)
43 char buf[DEBUGFS_FORMAT_BUFFER_SIZE];
47 res = vscnprintf(buf, sizeof(buf), fmt, args);
50 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
53 #define DEBUGFS_READONLY_FILE(name, fmt, value...) \
54 static ssize_t name## _read(struct file *file, char __user *userbuf, \
55 size_t count, loff_t *ppos) \
57 struct wl1271 *wl = file->private_data; \
58 return wl1271_format_buffer(userbuf, count, ppos, \
62 static const struct file_operations name## _ops = { \
63 .read = name## _read, \
64 .open = wl1271_open_file_generic, \
65 .llseek = generic_file_llseek, \
68 #define DEBUGFS_ADD(name, parent) \
69 entry = debugfs_create_file(#name, 0400, parent, \
71 if (!entry || IS_ERR(entry)) \
74 #define DEBUGFS_FWSTATS_FILE(sub, name, fmt) \
75 static ssize_t sub## _ ##name## _read(struct file *file, \
76 char __user *userbuf, \
77 size_t count, loff_t *ppos) \
79 struct wl1271 *wl = file->private_data; \
81 wl1271_debugfs_update_stats(wl); \
83 return wl1271_format_buffer(userbuf, count, ppos, fmt "\n", \
84 wl->stats.fw_stats->sub.name); \
87 static const struct file_operations sub## _ ##name## _ops = { \
88 .read = sub## _ ##name## _read, \
89 .open = wl1271_open_file_generic, \
90 .llseek = generic_file_llseek, \
93 #define DEBUGFS_FWSTATS_ADD(sub, name) \
94 DEBUGFS_ADD(sub## _ ##name, stats)
96 static void wl1271_debugfs_update_stats(struct wl1271 *wl)
100 mutex_lock(&wl->mutex);
102 ret = wl1271_ps_elp_wakeup(wl, false);
106 if (wl->state == WL1271_STATE_ON &&
107 time_after(jiffies, wl->stats.fw_stats_update +
108 msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) {
109 wl1271_acx_statistics(wl, wl->stats.fw_stats);
110 wl->stats.fw_stats_update = jiffies;
113 wl1271_ps_elp_sleep(wl);
116 mutex_unlock(&wl->mutex);
119 static int wl1271_open_file_generic(struct inode *inode, struct file *file)
121 file->private_data = inode->i_private;
125 DEBUGFS_FWSTATS_FILE(tx, internal_desc_overflow, "%u");
127 DEBUGFS_FWSTATS_FILE(rx, out_of_mem, "%u");
128 DEBUGFS_FWSTATS_FILE(rx, hdr_overflow, "%u");
129 DEBUGFS_FWSTATS_FILE(rx, hw_stuck, "%u");
130 DEBUGFS_FWSTATS_FILE(rx, dropped, "%u");
131 DEBUGFS_FWSTATS_FILE(rx, fcs_err, "%u");
132 DEBUGFS_FWSTATS_FILE(rx, xfr_hint_trig, "%u");
133 DEBUGFS_FWSTATS_FILE(rx, path_reset, "%u");
134 DEBUGFS_FWSTATS_FILE(rx, reset_counter, "%u");
136 DEBUGFS_FWSTATS_FILE(dma, rx_requested, "%u");
137 DEBUGFS_FWSTATS_FILE(dma, rx_errors, "%u");
138 DEBUGFS_FWSTATS_FILE(dma, tx_requested, "%u");
139 DEBUGFS_FWSTATS_FILE(dma, tx_errors, "%u");
141 DEBUGFS_FWSTATS_FILE(isr, cmd_cmplt, "%u");
142 DEBUGFS_FWSTATS_FILE(isr, fiqs, "%u");
143 DEBUGFS_FWSTATS_FILE(isr, rx_headers, "%u");
144 DEBUGFS_FWSTATS_FILE(isr, rx_mem_overflow, "%u");
145 DEBUGFS_FWSTATS_FILE(isr, rx_rdys, "%u");
146 DEBUGFS_FWSTATS_FILE(isr, irqs, "%u");
147 DEBUGFS_FWSTATS_FILE(isr, tx_procs, "%u");
148 DEBUGFS_FWSTATS_FILE(isr, decrypt_done, "%u");
149 DEBUGFS_FWSTATS_FILE(isr, dma0_done, "%u");
150 DEBUGFS_FWSTATS_FILE(isr, dma1_done, "%u");
151 DEBUGFS_FWSTATS_FILE(isr, tx_exch_complete, "%u");
152 DEBUGFS_FWSTATS_FILE(isr, commands, "%u");
153 DEBUGFS_FWSTATS_FILE(isr, rx_procs, "%u");
154 DEBUGFS_FWSTATS_FILE(isr, hw_pm_mode_changes, "%u");
155 DEBUGFS_FWSTATS_FILE(isr, host_acknowledges, "%u");
156 DEBUGFS_FWSTATS_FILE(isr, pci_pm, "%u");
157 DEBUGFS_FWSTATS_FILE(isr, wakeups, "%u");
158 DEBUGFS_FWSTATS_FILE(isr, low_rssi, "%u");
160 DEBUGFS_FWSTATS_FILE(wep, addr_key_count, "%u");
161 DEBUGFS_FWSTATS_FILE(wep, default_key_count, "%u");
162 /* skipping wep.reserved */
163 DEBUGFS_FWSTATS_FILE(wep, key_not_found, "%u");
164 DEBUGFS_FWSTATS_FILE(wep, decrypt_fail, "%u");
165 DEBUGFS_FWSTATS_FILE(wep, packets, "%u");
166 DEBUGFS_FWSTATS_FILE(wep, interrupt, "%u");
168 DEBUGFS_FWSTATS_FILE(pwr, ps_enter, "%u");
169 DEBUGFS_FWSTATS_FILE(pwr, elp_enter, "%u");
170 DEBUGFS_FWSTATS_FILE(pwr, missing_bcns, "%u");
171 DEBUGFS_FWSTATS_FILE(pwr, wake_on_host, "%u");
172 DEBUGFS_FWSTATS_FILE(pwr, wake_on_timer_exp, "%u");
173 DEBUGFS_FWSTATS_FILE(pwr, tx_with_ps, "%u");
174 DEBUGFS_FWSTATS_FILE(pwr, tx_without_ps, "%u");
175 DEBUGFS_FWSTATS_FILE(pwr, rcvd_beacons, "%u");
176 DEBUGFS_FWSTATS_FILE(pwr, power_save_off, "%u");
177 DEBUGFS_FWSTATS_FILE(pwr, enable_ps, "%u");
178 DEBUGFS_FWSTATS_FILE(pwr, disable_ps, "%u");
179 DEBUGFS_FWSTATS_FILE(pwr, fix_tsf_ps, "%u");
180 /* skipping cont_miss_bcns_spread for now */
181 DEBUGFS_FWSTATS_FILE(pwr, rcvd_awake_beacons, "%u");
183 DEBUGFS_FWSTATS_FILE(mic, rx_pkts, "%u");
184 DEBUGFS_FWSTATS_FILE(mic, calc_failure, "%u");
186 DEBUGFS_FWSTATS_FILE(aes, encrypt_fail, "%u");
187 DEBUGFS_FWSTATS_FILE(aes, decrypt_fail, "%u");
188 DEBUGFS_FWSTATS_FILE(aes, encrypt_packets, "%u");
189 DEBUGFS_FWSTATS_FILE(aes, decrypt_packets, "%u");
190 DEBUGFS_FWSTATS_FILE(aes, encrypt_interrupt, "%u");
191 DEBUGFS_FWSTATS_FILE(aes, decrypt_interrupt, "%u");
193 DEBUGFS_FWSTATS_FILE(event, heart_beat, "%u");
194 DEBUGFS_FWSTATS_FILE(event, calibration, "%u");
195 DEBUGFS_FWSTATS_FILE(event, rx_mismatch, "%u");
196 DEBUGFS_FWSTATS_FILE(event, rx_mem_empty, "%u");
197 DEBUGFS_FWSTATS_FILE(event, rx_pool, "%u");
198 DEBUGFS_FWSTATS_FILE(event, oom_late, "%u");
199 DEBUGFS_FWSTATS_FILE(event, phy_transmit_error, "%u");
200 DEBUGFS_FWSTATS_FILE(event, tx_stuck, "%u");
202 DEBUGFS_FWSTATS_FILE(ps, pspoll_timeouts, "%u");
203 DEBUGFS_FWSTATS_FILE(ps, upsd_timeouts, "%u");
204 DEBUGFS_FWSTATS_FILE(ps, upsd_max_sptime, "%u");
205 DEBUGFS_FWSTATS_FILE(ps, upsd_max_apturn, "%u");
206 DEBUGFS_FWSTATS_FILE(ps, pspoll_max_apturn, "%u");
207 DEBUGFS_FWSTATS_FILE(ps, pspoll_utilization, "%u");
208 DEBUGFS_FWSTATS_FILE(ps, upsd_utilization, "%u");
210 DEBUGFS_FWSTATS_FILE(rxpipe, rx_prep_beacon_drop, "%u");
211 DEBUGFS_FWSTATS_FILE(rxpipe, descr_host_int_trig_rx_data, "%u");
212 DEBUGFS_FWSTATS_FILE(rxpipe, beacon_buffer_thres_host_int_trig_rx_data, "%u");
213 DEBUGFS_FWSTATS_FILE(rxpipe, missed_beacon_host_int_trig_rx_data, "%u");
214 DEBUGFS_FWSTATS_FILE(rxpipe, tx_xfr_host_int_trig_rx_data, "%u");
216 DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count);
217 DEBUGFS_READONLY_FILE(excessive_retries, "%u",
218 wl->stats.excessive_retries);
220 static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf,
221 size_t count, loff_t *ppos)
223 struct wl1271 *wl = file->private_data;
228 queue_len = wl->tx_queue_count;
230 res = scnprintf(buf, sizeof(buf), "%u\n", queue_len);
231 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
234 static const struct file_operations tx_queue_len_ops = {
235 .read = tx_queue_len_read,
236 .open = wl1271_open_file_generic,
237 .llseek = default_llseek,
240 static ssize_t gpio_power_read(struct file *file, char __user *user_buf,
241 size_t count, loff_t *ppos)
243 struct wl1271 *wl = file->private_data;
244 bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags);
249 res = scnprintf(buf, sizeof(buf), "%d\n", state);
251 return simple_read_from_buffer(user_buf, count, ppos, buf, res);
254 static ssize_t gpio_power_write(struct file *file,
255 const char __user *user_buf,
256 size_t count, loff_t *ppos)
258 struct wl1271 *wl = file->private_data;
264 mutex_lock(&wl->mutex);
266 len = min(count, sizeof(buf) - 1);
267 if (copy_from_user(buf, user_buf, len)) {
273 ret = strict_strtoul(buf, 0, &value);
275 wl1271_warning("illegal value in gpio_power");
282 wl1271_power_off(wl);
285 mutex_unlock(&wl->mutex);
289 static const struct file_operations gpio_power_ops = {
290 .read = gpio_power_read,
291 .write = gpio_power_write,
292 .open = wl1271_open_file_generic,
293 .llseek = default_llseek,
296 static int wl1271_debugfs_add_files(struct wl1271 *wl,
297 struct dentry *rootdir)
300 struct dentry *entry, *stats;
302 stats = debugfs_create_dir("fw-statistics", rootdir);
303 if (!stats || IS_ERR(stats)) {
308 DEBUGFS_FWSTATS_ADD(tx, internal_desc_overflow);
310 DEBUGFS_FWSTATS_ADD(rx, out_of_mem);
311 DEBUGFS_FWSTATS_ADD(rx, hdr_overflow);
312 DEBUGFS_FWSTATS_ADD(rx, hw_stuck);
313 DEBUGFS_FWSTATS_ADD(rx, dropped);
314 DEBUGFS_FWSTATS_ADD(rx, fcs_err);
315 DEBUGFS_FWSTATS_ADD(rx, xfr_hint_trig);
316 DEBUGFS_FWSTATS_ADD(rx, path_reset);
317 DEBUGFS_FWSTATS_ADD(rx, reset_counter);
319 DEBUGFS_FWSTATS_ADD(dma, rx_requested);
320 DEBUGFS_FWSTATS_ADD(dma, rx_errors);
321 DEBUGFS_FWSTATS_ADD(dma, tx_requested);
322 DEBUGFS_FWSTATS_ADD(dma, tx_errors);
324 DEBUGFS_FWSTATS_ADD(isr, cmd_cmplt);
325 DEBUGFS_FWSTATS_ADD(isr, fiqs);
326 DEBUGFS_FWSTATS_ADD(isr, rx_headers);
327 DEBUGFS_FWSTATS_ADD(isr, rx_mem_overflow);
328 DEBUGFS_FWSTATS_ADD(isr, rx_rdys);
329 DEBUGFS_FWSTATS_ADD(isr, irqs);
330 DEBUGFS_FWSTATS_ADD(isr, tx_procs);
331 DEBUGFS_FWSTATS_ADD(isr, decrypt_done);
332 DEBUGFS_FWSTATS_ADD(isr, dma0_done);
333 DEBUGFS_FWSTATS_ADD(isr, dma1_done);
334 DEBUGFS_FWSTATS_ADD(isr, tx_exch_complete);
335 DEBUGFS_FWSTATS_ADD(isr, commands);
336 DEBUGFS_FWSTATS_ADD(isr, rx_procs);
337 DEBUGFS_FWSTATS_ADD(isr, hw_pm_mode_changes);
338 DEBUGFS_FWSTATS_ADD(isr, host_acknowledges);
339 DEBUGFS_FWSTATS_ADD(isr, pci_pm);
340 DEBUGFS_FWSTATS_ADD(isr, wakeups);
341 DEBUGFS_FWSTATS_ADD(isr, low_rssi);
343 DEBUGFS_FWSTATS_ADD(wep, addr_key_count);
344 DEBUGFS_FWSTATS_ADD(wep, default_key_count);
345 /* skipping wep.reserved */
346 DEBUGFS_FWSTATS_ADD(wep, key_not_found);
347 DEBUGFS_FWSTATS_ADD(wep, decrypt_fail);
348 DEBUGFS_FWSTATS_ADD(wep, packets);
349 DEBUGFS_FWSTATS_ADD(wep, interrupt);
351 DEBUGFS_FWSTATS_ADD(pwr, ps_enter);
352 DEBUGFS_FWSTATS_ADD(pwr, elp_enter);
353 DEBUGFS_FWSTATS_ADD(pwr, missing_bcns);
354 DEBUGFS_FWSTATS_ADD(pwr, wake_on_host);
355 DEBUGFS_FWSTATS_ADD(pwr, wake_on_timer_exp);
356 DEBUGFS_FWSTATS_ADD(pwr, tx_with_ps);
357 DEBUGFS_FWSTATS_ADD(pwr, tx_without_ps);
358 DEBUGFS_FWSTATS_ADD(pwr, rcvd_beacons);
359 DEBUGFS_FWSTATS_ADD(pwr, power_save_off);
360 DEBUGFS_FWSTATS_ADD(pwr, enable_ps);
361 DEBUGFS_FWSTATS_ADD(pwr, disable_ps);
362 DEBUGFS_FWSTATS_ADD(pwr, fix_tsf_ps);
363 /* skipping cont_miss_bcns_spread for now */
364 DEBUGFS_FWSTATS_ADD(pwr, rcvd_awake_beacons);
366 DEBUGFS_FWSTATS_ADD(mic, rx_pkts);
367 DEBUGFS_FWSTATS_ADD(mic, calc_failure);
369 DEBUGFS_FWSTATS_ADD(aes, encrypt_fail);
370 DEBUGFS_FWSTATS_ADD(aes, decrypt_fail);
371 DEBUGFS_FWSTATS_ADD(aes, encrypt_packets);
372 DEBUGFS_FWSTATS_ADD(aes, decrypt_packets);
373 DEBUGFS_FWSTATS_ADD(aes, encrypt_interrupt);
374 DEBUGFS_FWSTATS_ADD(aes, decrypt_interrupt);
376 DEBUGFS_FWSTATS_ADD(event, heart_beat);
377 DEBUGFS_FWSTATS_ADD(event, calibration);
378 DEBUGFS_FWSTATS_ADD(event, rx_mismatch);
379 DEBUGFS_FWSTATS_ADD(event, rx_mem_empty);
380 DEBUGFS_FWSTATS_ADD(event, rx_pool);
381 DEBUGFS_FWSTATS_ADD(event, oom_late);
382 DEBUGFS_FWSTATS_ADD(event, phy_transmit_error);
383 DEBUGFS_FWSTATS_ADD(event, tx_stuck);
385 DEBUGFS_FWSTATS_ADD(ps, pspoll_timeouts);
386 DEBUGFS_FWSTATS_ADD(ps, upsd_timeouts);
387 DEBUGFS_FWSTATS_ADD(ps, upsd_max_sptime);
388 DEBUGFS_FWSTATS_ADD(ps, upsd_max_apturn);
389 DEBUGFS_FWSTATS_ADD(ps, pspoll_max_apturn);
390 DEBUGFS_FWSTATS_ADD(ps, pspoll_utilization);
391 DEBUGFS_FWSTATS_ADD(ps, upsd_utilization);
393 DEBUGFS_FWSTATS_ADD(rxpipe, rx_prep_beacon_drop);
394 DEBUGFS_FWSTATS_ADD(rxpipe, descr_host_int_trig_rx_data);
395 DEBUGFS_FWSTATS_ADD(rxpipe, beacon_buffer_thres_host_int_trig_rx_data);
396 DEBUGFS_FWSTATS_ADD(rxpipe, missed_beacon_host_int_trig_rx_data);
397 DEBUGFS_FWSTATS_ADD(rxpipe, tx_xfr_host_int_trig_rx_data);
399 DEBUGFS_ADD(tx_queue_len, rootdir);
400 DEBUGFS_ADD(retry_count, rootdir);
401 DEBUGFS_ADD(excessive_retries, rootdir);
403 DEBUGFS_ADD(gpio_power, rootdir);
405 entry = debugfs_create_x32("debug_level", 0600, rootdir,
406 &wl12xx_debug_level);
407 if (!entry || IS_ERR(entry))
414 ret = PTR_ERR(entry);
421 void wl1271_debugfs_reset(struct wl1271 *wl)
423 if (!wl->stats.fw_stats)
426 memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats));
427 wl->stats.retry_count = 0;
428 wl->stats.excessive_retries = 0;
431 int wl1271_debugfs_init(struct wl1271 *wl)
434 struct dentry *rootdir;
436 rootdir = debugfs_create_dir(KBUILD_MODNAME,
437 wl->hw->wiphy->debugfsdir);
439 if (IS_ERR(rootdir)) {
440 ret = PTR_ERR(rootdir);
444 wl->stats.fw_stats = kzalloc(sizeof(*wl->stats.fw_stats),
447 if (!wl->stats.fw_stats) {
452 wl->stats.fw_stats_update = jiffies;
454 ret = wl1271_debugfs_add_files(wl, rootdir);
462 kfree(wl->stats.fw_stats);
463 wl->stats.fw_stats = NULL;
466 debugfs_remove_recursive(rootdir);
472 void wl1271_debugfs_exit(struct wl1271 *wl)
474 kfree(wl->stats.fw_stats);
475 wl->stats.fw_stats = NULL;