Christian Lamparter | 00c4da2 | 2010-09-06 01:09:49 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Atheros CARL9170 driver |
| 3 | * |
| 4 | * debug(fs) probing |
| 5 | * |
| 6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| 7 | * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; see the file COPYING. If not, see |
| 21 | * http://www.gnu.org/licenses/. |
| 22 | * |
| 23 | * This file incorporates work covered by the following copyright and |
| 24 | * permission notice: |
| 25 | * Copyright (c) 2008-2009 Atheros Communications, Inc. |
| 26 | * |
| 27 | * Permission to use, copy, modify, and/or distribute this software for any |
| 28 | * purpose with or without fee is hereby granted, provided that the above |
| 29 | * copyright notice and this permission notice appear in all copies. |
| 30 | * |
| 31 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 32 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 33 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 34 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 35 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 36 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 37 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 38 | */ |
| 39 | |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/module.h> |
| 43 | #include <linux/seq_file.h> |
| 44 | #include <linux/vmalloc.h> |
| 45 | #include "carl9170.h" |
| 46 | #include "cmd.h" |
| 47 | |
| 48 | #define ADD(buf, off, max, fmt, args...) \ |
| 49 | off += snprintf(&buf[off], max - off, fmt, ##args); |
| 50 | |
| 51 | static int carl9170_debugfs_open(struct inode *inode, struct file *file) |
| 52 | { |
| 53 | file->private_data = inode->i_private; |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | struct carl9170_debugfs_fops { |
| 58 | unsigned int read_bufsize; |
| 59 | mode_t attr; |
| 60 | char *(*read)(struct ar9170 *ar, char *buf, size_t bufsize, |
| 61 | ssize_t *len); |
| 62 | ssize_t (*write)(struct ar9170 *aru, const char *buf, size_t size); |
| 63 | const struct file_operations fops; |
| 64 | |
| 65 | enum carl9170_device_state req_dev_state; |
| 66 | }; |
| 67 | |
| 68 | static ssize_t carl9170_debugfs_read(struct file *file, char __user *userbuf, |
| 69 | size_t count, loff_t *ppos) |
| 70 | { |
| 71 | struct carl9170_debugfs_fops *dfops; |
| 72 | struct ar9170 *ar; |
| 73 | char *buf = NULL, *res_buf = NULL; |
| 74 | ssize_t ret = 0; |
| 75 | int err = 0; |
| 76 | |
| 77 | if (!count) |
| 78 | return 0; |
| 79 | |
| 80 | ar = file->private_data; |
| 81 | |
| 82 | if (!ar) |
| 83 | return -ENODEV; |
| 84 | dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops); |
| 85 | |
| 86 | if (!dfops->read) |
| 87 | return -ENOSYS; |
| 88 | |
| 89 | if (dfops->read_bufsize) { |
| 90 | buf = vmalloc(dfops->read_bufsize); |
| 91 | if (!buf) |
| 92 | return -ENOMEM; |
| 93 | } |
| 94 | |
| 95 | mutex_lock(&ar->mutex); |
| 96 | if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) { |
| 97 | err = -ENODEV; |
| 98 | res_buf = buf; |
| 99 | goto out_free; |
| 100 | } |
| 101 | |
| 102 | res_buf = dfops->read(ar, buf, dfops->read_bufsize, &ret); |
| 103 | |
| 104 | if (ret > 0) |
| 105 | err = simple_read_from_buffer(userbuf, count, ppos, |
| 106 | res_buf, ret); |
| 107 | else |
| 108 | err = ret; |
| 109 | |
| 110 | WARN_ON_ONCE(dfops->read_bufsize && (res_buf != buf)); |
| 111 | |
| 112 | out_free: |
| 113 | vfree(res_buf); |
| 114 | mutex_unlock(&ar->mutex); |
| 115 | return err; |
| 116 | } |
| 117 | |
| 118 | static ssize_t carl9170_debugfs_write(struct file *file, |
| 119 | const char __user *userbuf, size_t count, loff_t *ppos) |
| 120 | { |
| 121 | struct carl9170_debugfs_fops *dfops; |
| 122 | struct ar9170 *ar; |
| 123 | char *buf = NULL; |
| 124 | int err = 0; |
| 125 | |
| 126 | if (!count) |
| 127 | return 0; |
| 128 | |
| 129 | if (count > PAGE_SIZE) |
| 130 | return -E2BIG; |
| 131 | |
| 132 | ar = file->private_data; |
| 133 | |
| 134 | if (!ar) |
| 135 | return -ENODEV; |
| 136 | dfops = container_of(file->f_op, struct carl9170_debugfs_fops, fops); |
| 137 | |
| 138 | if (!dfops->write) |
| 139 | return -ENOSYS; |
| 140 | |
| 141 | buf = vmalloc(count); |
| 142 | if (!buf) |
| 143 | return -ENOMEM; |
| 144 | |
| 145 | if (copy_from_user(buf, userbuf, count)) { |
| 146 | err = -EFAULT; |
| 147 | goto out_free; |
| 148 | } |
| 149 | |
| 150 | if (mutex_trylock(&ar->mutex) == 0) { |
| 151 | err = -EAGAIN; |
| 152 | goto out_free; |
| 153 | } |
| 154 | |
| 155 | if (!CHK_DEV_STATE(ar, dfops->req_dev_state)) { |
| 156 | err = -ENODEV; |
| 157 | goto out_unlock; |
| 158 | } |
| 159 | |
| 160 | err = dfops->write(ar, buf, count); |
| 161 | if (err) |
| 162 | goto out_unlock; |
| 163 | |
| 164 | out_unlock: |
| 165 | mutex_unlock(&ar->mutex); |
| 166 | |
| 167 | out_free: |
| 168 | vfree(buf); |
| 169 | return err; |
| 170 | } |
| 171 | |
| 172 | #define __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \ |
| 173 | _attr, _dstate) \ |
| 174 | static const struct carl9170_debugfs_fops carl_debugfs_##name ##_ops = {\ |
| 175 | .read_bufsize = _read_bufsize, \ |
| 176 | .read = _read, \ |
| 177 | .write = _write, \ |
| 178 | .attr = _attr, \ |
| 179 | .req_dev_state = _dstate, \ |
| 180 | .fops = { \ |
| 181 | .open = carl9170_debugfs_open, \ |
| 182 | .read = carl9170_debugfs_read, \ |
| 183 | .write = carl9170_debugfs_write, \ |
| 184 | .owner = THIS_MODULE \ |
| 185 | }, \ |
| 186 | } |
| 187 | |
| 188 | #define DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, _attr) \ |
| 189 | __DEBUGFS_DECLARE_FILE(name, _read, _write, _read_bufsize, \ |
| 190 | _attr, CARL9170_STARTED) \ |
| 191 | |
| 192 | #define DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) \ |
| 193 | DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| 194 | NULL, _read_bufsize, S_IRUSR) |
| 195 | |
| 196 | #define DEBUGFS_DECLARE_WO_FILE(name) \ |
| 197 | DEBUGFS_DECLARE_FILE(name, NULL, carl9170_debugfs_##name ##_write,\ |
| 198 | 0, S_IWUSR) |
| 199 | |
| 200 | #define DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize) \ |
| 201 | DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| 202 | carl9170_debugfs_##name ##_write, \ |
| 203 | _read_bufsize, S_IRUSR | S_IWUSR) |
| 204 | |
| 205 | #define __DEBUGFS_DECLARE_RW_FILE(name, _read_bufsize, _dstate) \ |
| 206 | __DEBUGFS_DECLARE_FILE(name, carl9170_debugfs_##name ##_read, \ |
| 207 | carl9170_debugfs_##name ##_write, \ |
| 208 | _read_bufsize, S_IRUSR | S_IWUSR, _dstate) |
| 209 | |
| 210 | #define DEBUGFS_READONLY_FILE(name, _read_bufsize, fmt, value...) \ |
| 211 | static char *carl9170_debugfs_ ##name ## _read(struct ar9170 *ar, \ |
| 212 | char *buf, size_t buf_size,\ |
| 213 | ssize_t *len) \ |
| 214 | { \ |
| 215 | ADD(buf, *len, buf_size, fmt "\n", ##value); \ |
| 216 | return buf; \ |
| 217 | } \ |
| 218 | DEBUGFS_DECLARE_RO_FILE(name, _read_bufsize) |
| 219 | |
| 220 | static char *carl9170_debugfs_mem_usage_read(struct ar9170 *ar, char *buf, |
| 221 | size_t bufsize, ssize_t *len) |
| 222 | { |
| 223 | ADD(buf, *len, bufsize, "jar: ["); |
| 224 | |
| 225 | spin_lock_bh(&ar->mem_lock); |
| 226 | |
| 227 | *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| 228 | ar->mem_bitmap, ar->fw.mem_blocks); |
| 229 | |
| 230 | ADD(buf, *len, bufsize, "]\n"); |
| 231 | |
| 232 | ADD(buf, *len, bufsize, "cookies: used:%3d / total:%3d, allocs:%d\n", |
| 233 | bitmap_weight(ar->mem_bitmap, ar->fw.mem_blocks), |
| 234 | ar->fw.mem_blocks, atomic_read(&ar->mem_allocs)); |
| 235 | |
| 236 | ADD(buf, *len, bufsize, "memory: free:%3d (%3d KiB) / total:%3d KiB)\n", |
| 237 | atomic_read(&ar->mem_free_blocks), |
| 238 | (atomic_read(&ar->mem_free_blocks) * ar->fw.mem_block_size) / 1024, |
| 239 | (ar->fw.mem_blocks * ar->fw.mem_block_size) / 1024); |
| 240 | |
| 241 | spin_unlock_bh(&ar->mem_lock); |
| 242 | |
| 243 | return buf; |
| 244 | } |
| 245 | DEBUGFS_DECLARE_RO_FILE(mem_usage, 512); |
| 246 | |
| 247 | static char *carl9170_debugfs_qos_stat_read(struct ar9170 *ar, char *buf, |
| 248 | size_t bufsize, ssize_t *len) |
| 249 | { |
| 250 | ADD(buf, *len, bufsize, "%s QoS AC\n", modparam_noht ? "Hardware" : |
| 251 | "Software"); |
| 252 | |
| 253 | ADD(buf, *len, bufsize, "[ VO VI " |
| 254 | " BE BK ]\n"); |
| 255 | |
| 256 | spin_lock_bh(&ar->tx_stats_lock); |
| 257 | ADD(buf, *len, bufsize, "[length/limit length/limit " |
| 258 | "length/limit length/limit ]\n" |
| 259 | "[ %3d/%3d %3d/%3d " |
| 260 | " %3d/%3d %3d/%3d ]\n\n", |
| 261 | ar->tx_stats[0].len, ar->tx_stats[0].limit, |
| 262 | ar->tx_stats[1].len, ar->tx_stats[1].limit, |
| 263 | ar->tx_stats[2].len, ar->tx_stats[2].limit, |
| 264 | ar->tx_stats[3].len, ar->tx_stats[3].limit); |
| 265 | |
| 266 | ADD(buf, *len, bufsize, "[ total total " |
| 267 | " total total ]\n" |
| 268 | "[%10d %10d %10d %10d ]\n\n", |
| 269 | ar->tx_stats[0].count, ar->tx_stats[1].count, |
| 270 | ar->tx_stats[2].count, ar->tx_stats[3].count); |
| 271 | |
| 272 | spin_unlock_bh(&ar->tx_stats_lock); |
| 273 | |
| 274 | ADD(buf, *len, bufsize, "[ pend/waittx pend/waittx " |
| 275 | " pend/waittx pend/waittx]\n" |
| 276 | "[ %3d/%3d %3d/%3d " |
| 277 | " %3d/%3d %3d/%3d ]\n\n", |
| 278 | skb_queue_len(&ar->tx_pending[0]), |
| 279 | skb_queue_len(&ar->tx_status[0]), |
| 280 | skb_queue_len(&ar->tx_pending[1]), |
| 281 | skb_queue_len(&ar->tx_status[1]), |
| 282 | skb_queue_len(&ar->tx_pending[2]), |
| 283 | skb_queue_len(&ar->tx_status[2]), |
| 284 | skb_queue_len(&ar->tx_pending[3]), |
| 285 | skb_queue_len(&ar->tx_status[3])); |
| 286 | |
| 287 | return buf; |
| 288 | } |
| 289 | DEBUGFS_DECLARE_RO_FILE(qos_stat, 512); |
| 290 | |
| 291 | static void carl9170_debugfs_format_frame(struct ar9170 *ar, |
| 292 | struct sk_buff *skb, const char *prefix, char *buf, |
| 293 | ssize_t *off, ssize_t bufsize) |
| 294 | { |
| 295 | struct _carl9170_tx_superframe *txc = (void *) skb->data; |
| 296 | struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb); |
| 297 | struct carl9170_tx_info *arinfo = (void *) txinfo->rate_driver_data; |
| 298 | struct ieee80211_hdr *hdr = (void *) txc->frame_data; |
| 299 | |
| 300 | ADD(buf, *off, bufsize, "%s %p, c:%2x, DA:%pM, sq:%4d, mc:%.4x, " |
| 301 | "pc:%.8x, to:%d ms\n", prefix, skb, txc->s.cookie, |
| 302 | ieee80211_get_DA(hdr), get_seq_h(hdr), |
| 303 | le16_to_cpu(txc->f.mac_control), le32_to_cpu(txc->f.phy_control), |
| 304 | jiffies_to_msecs(jiffies - arinfo->timeout)); |
| 305 | } |
| 306 | |
| 307 | |
| 308 | static char *carl9170_debugfs_ampdu_state_read(struct ar9170 *ar, char *buf, |
| 309 | size_t bufsize, ssize_t *len) |
| 310 | { |
| 311 | struct carl9170_sta_tid *iter; |
| 312 | struct sk_buff *skb; |
| 313 | int cnt = 0, fc; |
| 314 | int offset; |
| 315 | |
| 316 | rcu_read_lock(); |
| 317 | list_for_each_entry_rcu(iter, &ar->tx_ampdu_list, list) { |
| 318 | |
| 319 | spin_lock_bh(&iter->lock); |
| 320 | ADD(buf, *len, bufsize, "Entry: #%2d TID:%1d, BSN:%4d, " |
| 321 | "SNX:%4d, HSN:%4d, BAW:%2d, state:%1d, toggles:%d\n", |
| 322 | cnt, iter->tid, iter->bsn, iter->snx, iter->hsn, |
| 323 | iter->max, iter->state, iter->counter); |
| 324 | |
| 325 | ADD(buf, *len, bufsize, "\tWindow: ["); |
| 326 | |
| 327 | *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| 328 | iter->bitmap, CARL9170_BAW_BITS); |
| 329 | |
| 330 | #define BM_STR_OFF(offset) \ |
| 331 | ((CARL9170_BAW_BITS - (offset) - 1) / 4 + \ |
| 332 | (CARL9170_BAW_BITS - (offset) - 1) / 32 + 1) |
| 333 | |
| 334 | ADD(buf, *len, bufsize, ",W]\n"); |
| 335 | |
| 336 | offset = BM_STR_OFF(0); |
| 337 | ADD(buf, *len, bufsize, "\tBase Seq: %*s\n", offset, "T"); |
| 338 | |
| 339 | offset = BM_STR_OFF(SEQ_DIFF(iter->snx, iter->bsn)); |
| 340 | ADD(buf, *len, bufsize, "\tNext Seq: %*s\n", offset, "W"); |
| 341 | |
| 342 | offset = BM_STR_OFF(((int)iter->hsn - (int)iter->bsn) % |
| 343 | CARL9170_BAW_BITS); |
| 344 | ADD(buf, *len, bufsize, "\tLast Seq: %*s\n", offset, "N"); |
| 345 | |
| 346 | ADD(buf, *len, bufsize, "\tPre-Aggregation reorder buffer: " |
| 347 | " currently queued:%d\n", skb_queue_len(&iter->queue)); |
| 348 | |
| 349 | fc = 0; |
| 350 | skb_queue_walk(&iter->queue, skb) { |
| 351 | char prefix[32]; |
| 352 | |
| 353 | snprintf(prefix, sizeof(prefix), "\t\t%3d :", fc); |
| 354 | carl9170_debugfs_format_frame(ar, skb, prefix, buf, |
| 355 | len, bufsize); |
| 356 | |
| 357 | fc++; |
| 358 | } |
| 359 | spin_unlock_bh(&iter->lock); |
| 360 | cnt++; |
| 361 | } |
| 362 | rcu_read_unlock(); |
| 363 | |
| 364 | return buf; |
| 365 | } |
| 366 | DEBUGFS_DECLARE_RO_FILE(ampdu_state, 8000); |
| 367 | |
| 368 | static void carl9170_debugfs_queue_dump(struct ar9170 *ar, char *buf, |
| 369 | ssize_t *len, size_t bufsize, struct sk_buff_head *queue) |
| 370 | { |
| 371 | struct sk_buff *skb; |
| 372 | char prefix[16]; |
| 373 | int fc = 0; |
| 374 | |
| 375 | spin_lock_bh(&queue->lock); |
| 376 | skb_queue_walk(queue, skb) { |
| 377 | snprintf(prefix, sizeof(prefix), "%3d :", fc); |
| 378 | carl9170_debugfs_format_frame(ar, skb, prefix, buf, |
| 379 | len, bufsize); |
| 380 | fc++; |
| 381 | } |
| 382 | spin_unlock_bh(&queue->lock); |
| 383 | } |
| 384 | |
| 385 | #define DEBUGFS_QUEUE_DUMP(q, qi) \ |
| 386 | static char *carl9170_debugfs_##q ##_##qi ##_read(struct ar9170 *ar, \ |
| 387 | char *buf, size_t bufsize, ssize_t *len) \ |
| 388 | { \ |
| 389 | carl9170_debugfs_queue_dump(ar, buf, len, bufsize, &ar->q[qi]); \ |
| 390 | return buf; \ |
| 391 | } \ |
| 392 | DEBUGFS_DECLARE_RO_FILE(q##_##qi, 8000); |
| 393 | |
| 394 | static char *carl9170_debugfs_sta_psm_read(struct ar9170 *ar, char *buf, |
| 395 | size_t bufsize, ssize_t *len) |
| 396 | { |
| 397 | ADD(buf, *len, bufsize, "psm state: %s\n", (ar->ps.off_override ? |
| 398 | "FORCE CAM" : (ar->ps.state ? "PSM" : "CAM"))); |
| 399 | |
| 400 | ADD(buf, *len, bufsize, "sleep duration: %d ms.\n", ar->ps.sleep_ms); |
| 401 | ADD(buf, *len, bufsize, "last power-state transition: %d ms ago.\n", |
| 402 | jiffies_to_msecs(jiffies - ar->ps.last_action)); |
| 403 | ADD(buf, *len, bufsize, "last CAM->PSM transition: %d ms ago.\n", |
| 404 | jiffies_to_msecs(jiffies - ar->ps.last_slept)); |
| 405 | |
| 406 | return buf; |
| 407 | } |
| 408 | DEBUGFS_DECLARE_RO_FILE(sta_psm, 160); |
| 409 | |
| 410 | static char *carl9170_debugfs_tx_stuck_read(struct ar9170 *ar, char *buf, |
| 411 | size_t bufsize, ssize_t *len) |
| 412 | { |
| 413 | int i; |
| 414 | |
| 415 | for (i = 0; i < ar->hw->queues; i++) { |
| 416 | ADD(buf, *len, bufsize, "TX queue [%d]: %10d max:%10d ms.\n", |
| 417 | i, ieee80211_queue_stopped(ar->hw, i) ? |
| 418 | jiffies_to_msecs(jiffies - ar->queue_stop_timeout[i]) : 0, |
| 419 | jiffies_to_msecs(ar->max_queue_stop_timeout[i])); |
| 420 | |
| 421 | ar->max_queue_stop_timeout[i] = 0; |
| 422 | } |
| 423 | |
| 424 | return buf; |
| 425 | } |
| 426 | DEBUGFS_DECLARE_RO_FILE(tx_stuck, 180); |
| 427 | |
| 428 | static char *carl9170_debugfs_phy_noise_read(struct ar9170 *ar, char *buf, |
| 429 | size_t bufsize, ssize_t *len) |
| 430 | { |
| 431 | int err; |
| 432 | |
| 433 | err = carl9170_get_noisefloor(ar); |
| 434 | if (err) { |
| 435 | *len = err; |
| 436 | return buf; |
| 437 | } |
| 438 | |
Christian Lamparter | 9adc9e0 | 2010-09-17 22:42:37 +0200 | [diff] [blame^] | 439 | ADD(buf, *len, bufsize, "Chain 0: %10d dBm, ext. chan.:%10d dBm\n", |
| 440 | ar->noise[0], ar->noise[2]); |
Christian Lamparter | 00c4da2 | 2010-09-06 01:09:49 +0200 | [diff] [blame] | 441 | ADD(buf, *len, bufsize, "Chain 2: %10d dBm, ext. chan.:%10d dBm\n", |
Christian Lamparter | 9adc9e0 | 2010-09-17 22:42:37 +0200 | [diff] [blame^] | 442 | ar->noise[1], ar->noise[3]); |
Christian Lamparter | 00c4da2 | 2010-09-06 01:09:49 +0200 | [diff] [blame] | 443 | |
| 444 | return buf; |
| 445 | } |
| 446 | DEBUGFS_DECLARE_RO_FILE(phy_noise, 180); |
| 447 | |
| 448 | static char *carl9170_debugfs_vif_dump_read(struct ar9170 *ar, char *buf, |
| 449 | size_t bufsize, ssize_t *len) |
| 450 | { |
| 451 | struct carl9170_vif_info *iter; |
| 452 | int i = 0; |
| 453 | |
| 454 | ADD(buf, *len, bufsize, "registered VIFs:%d \\ %d\n", |
| 455 | ar->vifs, ar->fw.vif_num); |
| 456 | |
| 457 | ADD(buf, *len, bufsize, "VIF bitmap: ["); |
| 458 | |
| 459 | *len += bitmap_scnprintf(&buf[*len], bufsize - *len, |
| 460 | &ar->vif_bitmap, ar->fw.vif_num); |
| 461 | |
| 462 | ADD(buf, *len, bufsize, "]\n"); |
| 463 | |
| 464 | rcu_read_lock(); |
| 465 | list_for_each_entry_rcu(iter, &ar->vif_list, list) { |
| 466 | struct ieee80211_vif *vif = carl9170_get_vif(iter); |
| 467 | ADD(buf, *len, bufsize, "\t%d = [%s VIF, id:%d, type:%x " |
| 468 | " mac:%pM %s]\n", i, (carl9170_get_main_vif(ar) == vif ? |
| 469 | "Master" : " Slave"), iter->id, vif->type, vif->addr, |
| 470 | iter->enable_beacon ? "beaconing " : ""); |
| 471 | i++; |
| 472 | } |
| 473 | rcu_read_unlock(); |
| 474 | |
| 475 | return buf; |
| 476 | } |
| 477 | DEBUGFS_DECLARE_RO_FILE(vif_dump, 8000); |
| 478 | |
| 479 | #define UPDATE_COUNTER(ar, name) ({ \ |
| 480 | u32 __tmp[ARRAY_SIZE(name##_regs)]; \ |
| 481 | unsigned int __i, __err = -ENODEV; \ |
| 482 | \ |
| 483 | for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \ |
| 484 | __tmp[__i] = name##_regs[__i].reg; \ |
| 485 | ar->debug.stats.name##_counter[__i] = 0; \ |
| 486 | } \ |
| 487 | \ |
| 488 | if (IS_STARTED(ar)) \ |
| 489 | __err = carl9170_read_mreg(ar, ARRAY_SIZE(name##_regs), \ |
| 490 | __tmp, ar->debug.stats.name##_counter); \ |
| 491 | (__err); }) |
| 492 | |
| 493 | #define TALLY_SUM_UP(ar, name) do { \ |
| 494 | unsigned int __i; \ |
| 495 | \ |
| 496 | for (__i = 0; __i < ARRAY_SIZE(name##_regs); __i++) { \ |
| 497 | ar->debug.stats.name##_sum[__i] += \ |
| 498 | ar->debug.stats.name##_counter[__i]; \ |
| 499 | } \ |
| 500 | } while (0) |
| 501 | |
| 502 | #define DEBUGFS_HW_TALLY_FILE(name, f) \ |
| 503 | static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \ |
| 504 | char *dum, size_t bufsize, ssize_t *ret) \ |
| 505 | { \ |
| 506 | char *buf; \ |
| 507 | int i, max_len, err; \ |
| 508 | \ |
| 509 | max_len = ARRAY_SIZE(name##_regs) * 80; \ |
| 510 | buf = vmalloc(max_len); \ |
| 511 | if (!buf) \ |
| 512 | return NULL; \ |
| 513 | \ |
| 514 | err = UPDATE_COUNTER(ar, name); \ |
| 515 | if (err) { \ |
| 516 | *ret = err; \ |
| 517 | return buf; \ |
| 518 | } \ |
| 519 | \ |
| 520 | TALLY_SUM_UP(ar, name); \ |
| 521 | \ |
| 522 | for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \ |
| 523 | ADD(buf, *ret, max_len, "%22s = %" f "[+%" f "]\n", \ |
| 524 | name##_regs[i].nreg, ar->debug.stats.name ##_sum[i],\ |
| 525 | ar->debug.stats.name ##_counter[i]); \ |
| 526 | } \ |
| 527 | \ |
| 528 | return buf; \ |
| 529 | } \ |
| 530 | DEBUGFS_DECLARE_RO_FILE(name, 0); |
| 531 | |
| 532 | #define DEBUGFS_HW_REG_FILE(name, f) \ |
| 533 | static char *carl9170_debugfs_##name ## _read(struct ar9170 *ar, \ |
| 534 | char *dum, size_t bufsize, ssize_t *ret) \ |
| 535 | { \ |
| 536 | char *buf; \ |
| 537 | int i, max_len, err; \ |
| 538 | \ |
| 539 | max_len = ARRAY_SIZE(name##_regs) * 80; \ |
| 540 | buf = vmalloc(max_len); \ |
| 541 | if (!buf) \ |
| 542 | return NULL; \ |
| 543 | \ |
| 544 | err = UPDATE_COUNTER(ar, name); \ |
| 545 | if (err) { \ |
| 546 | *ret = err; \ |
| 547 | return buf; \ |
| 548 | } \ |
| 549 | \ |
| 550 | for (i = 0; i < ARRAY_SIZE(name##_regs); i++) { \ |
| 551 | ADD(buf, *ret, max_len, "%22s = %" f "\n", \ |
| 552 | name##_regs[i].nreg, \ |
| 553 | ar->debug.stats.name##_counter[i]); \ |
| 554 | } \ |
| 555 | \ |
| 556 | return buf; \ |
| 557 | } \ |
| 558 | DEBUGFS_DECLARE_RO_FILE(name, 0); |
| 559 | |
| 560 | static ssize_t carl9170_debugfs_hw_ioread32_write(struct ar9170 *ar, |
| 561 | const char *buf, size_t count) |
| 562 | { |
| 563 | int err = 0, i, n = 0, max_len = 32, res; |
| 564 | unsigned int reg, tmp; |
| 565 | |
| 566 | if (!count) |
| 567 | return 0; |
| 568 | |
| 569 | if (count > max_len) |
| 570 | return -E2BIG; |
| 571 | |
| 572 | res = sscanf(buf, "0x%X %d", ®, &n); |
| 573 | if (res < 1) { |
| 574 | err = -EINVAL; |
| 575 | goto out; |
| 576 | } |
| 577 | |
| 578 | if (res == 1) |
| 579 | n = 1; |
| 580 | |
| 581 | if (n > 15) { |
| 582 | err = -EMSGSIZE; |
| 583 | goto out; |
| 584 | } |
| 585 | |
| 586 | if ((reg >= 0x280000) || ((reg + (n << 2)) >= 0x280000)) { |
| 587 | err = -EADDRNOTAVAIL; |
| 588 | goto out; |
| 589 | } |
| 590 | |
| 591 | if (reg & 3) { |
| 592 | err = -EINVAL; |
| 593 | goto out; |
| 594 | } |
| 595 | |
| 596 | for (i = 0; i < n; i++) { |
| 597 | err = carl9170_read_reg(ar, reg + (i << 2), &tmp); |
| 598 | if (err) |
| 599 | goto out; |
| 600 | |
| 601 | ar->debug.ring[ar->debug.ring_tail].reg = reg + (i << 2); |
| 602 | ar->debug.ring[ar->debug.ring_tail].value = tmp; |
| 603 | ar->debug.ring_tail++; |
| 604 | ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE; |
| 605 | } |
| 606 | |
| 607 | out: |
| 608 | return err ? err : count; |
| 609 | } |
| 610 | |
| 611 | static char *carl9170_debugfs_hw_ioread32_read(struct ar9170 *ar, char *buf, |
| 612 | size_t bufsize, ssize_t *ret) |
| 613 | { |
| 614 | int i = 0; |
| 615 | |
| 616 | while (ar->debug.ring_head != ar->debug.ring_tail) { |
| 617 | ADD(buf, *ret, bufsize, "%.8x = %.8x\n", |
| 618 | ar->debug.ring[ar->debug.ring_head].reg, |
| 619 | ar->debug.ring[ar->debug.ring_head].value); |
| 620 | |
| 621 | ar->debug.ring_head++; |
| 622 | ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE; |
| 623 | |
| 624 | if (i++ == 64) |
| 625 | break; |
| 626 | } |
| 627 | ar->debug.ring_head = ar->debug.ring_tail; |
| 628 | return buf; |
| 629 | } |
| 630 | DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40); |
| 631 | |
| 632 | static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf, |
| 633 | size_t count) |
| 634 | { |
| 635 | int err; |
| 636 | |
| 637 | if (count < 1) |
| 638 | return -EINVAL; |
| 639 | |
| 640 | switch (buf[0]) { |
| 641 | case 'F': |
| 642 | ar->needs_full_reset = true; |
| 643 | break; |
| 644 | |
| 645 | case 'R': |
| 646 | if (!IS_STARTED(ar)) { |
| 647 | err = -EAGAIN; |
| 648 | goto out; |
| 649 | } |
| 650 | |
| 651 | ar->needs_full_reset = false; |
| 652 | break; |
| 653 | |
| 654 | case 'M': |
| 655 | err = carl9170_mac_reset(ar); |
| 656 | if (err < 0) |
| 657 | count = err; |
| 658 | |
| 659 | goto out; |
| 660 | |
| 661 | case 'P': |
| 662 | err = carl9170_set_channel(ar, ar->hw->conf.channel, |
| 663 | ar->hw->conf.channel_type, CARL9170_RFI_COLD); |
| 664 | if (err < 0) |
| 665 | count = err; |
| 666 | |
| 667 | goto out; |
| 668 | |
| 669 | default: |
| 670 | return -EINVAL; |
| 671 | } |
| 672 | |
| 673 | carl9170_restart(ar, CARL9170_RR_USER_REQUEST); |
| 674 | |
| 675 | out: |
| 676 | return count; |
| 677 | } |
| 678 | |
| 679 | static char *carl9170_debugfs_bug_read(struct ar9170 *ar, char *buf, |
| 680 | size_t bufsize, ssize_t *ret) |
| 681 | { |
| 682 | ADD(buf, *ret, bufsize, "[P]hy reinit, [R]estart, [F]ull usb reset, " |
| 683 | "[M]ac reset\n"); |
| 684 | ADD(buf, *ret, bufsize, "firmware restarts:%d, last reason:%d\n", |
| 685 | ar->restart_counter, ar->last_reason); |
| 686 | ADD(buf, *ret, bufsize, "phy reinit errors:%d (%d)\n", |
| 687 | ar->total_chan_fail, ar->chan_fail); |
| 688 | ADD(buf, *ret, bufsize, "reported firmware errors:%d\n", |
| 689 | ar->fw.err_counter); |
| 690 | ADD(buf, *ret, bufsize, "reported firmware BUGs:%d\n", |
| 691 | ar->fw.bug_counter); |
| 692 | ADD(buf, *ret, bufsize, "pending restart requests:%d\n", |
| 693 | atomic_read(&ar->pending_restarts)); |
| 694 | return buf; |
| 695 | } |
| 696 | __DEBUGFS_DECLARE_RW_FILE(bug, 400, CARL9170_STOPPED); |
| 697 | |
| 698 | static const char *erp_modes[] = { |
| 699 | [CARL9170_ERP_INVALID] = "INVALID", |
| 700 | [CARL9170_ERP_AUTO] = "Automatic", |
| 701 | [CARL9170_ERP_MAC80211] = "Set by MAC80211", |
| 702 | [CARL9170_ERP_OFF] = "Force Off", |
| 703 | [CARL9170_ERP_RTS] = "Force RTS", |
| 704 | [CARL9170_ERP_CTS] = "Force CTS" |
| 705 | }; |
| 706 | |
| 707 | static char *carl9170_debugfs_erp_read(struct ar9170 *ar, char *buf, |
| 708 | size_t bufsize, ssize_t *ret) |
| 709 | { |
| 710 | ADD(buf, *ret, bufsize, "ERP Setting: (%d) -> %s\n", ar->erp_mode, |
| 711 | erp_modes[ar->erp_mode]); |
| 712 | return buf; |
| 713 | } |
| 714 | |
| 715 | static ssize_t carl9170_debugfs_erp_write(struct ar9170 *ar, const char *buf, |
| 716 | size_t count) |
| 717 | { |
| 718 | int res, val; |
| 719 | |
| 720 | if (count < 1) |
| 721 | return -EINVAL; |
| 722 | |
| 723 | res = sscanf(buf, "%d", &val); |
| 724 | if (res != 1) |
| 725 | return -EINVAL; |
| 726 | |
| 727 | if (!((val > CARL9170_ERP_INVALID) && |
| 728 | (val < __CARL9170_ERP_NUM))) |
| 729 | return -EINVAL; |
| 730 | |
| 731 | ar->erp_mode = val; |
| 732 | return count; |
| 733 | } |
| 734 | |
| 735 | DEBUGFS_DECLARE_RW_FILE(erp, 80); |
| 736 | |
| 737 | static ssize_t carl9170_debugfs_hw_iowrite32_write(struct ar9170 *ar, |
| 738 | const char *buf, size_t count) |
| 739 | { |
| 740 | int err = 0, max_len = 22, res; |
| 741 | u32 reg, val; |
| 742 | |
| 743 | if (!count) |
| 744 | return 0; |
| 745 | |
| 746 | if (count > max_len) |
| 747 | return -E2BIG; |
| 748 | |
| 749 | res = sscanf(buf, "0x%X 0x%X", ®, &val); |
| 750 | if (res != 2) { |
| 751 | err = -EINVAL; |
| 752 | goto out; |
| 753 | } |
| 754 | |
| 755 | if (reg <= 0x100000 || reg >= 0x280000) { |
| 756 | err = -EADDRNOTAVAIL; |
| 757 | goto out; |
| 758 | } |
| 759 | |
| 760 | if (reg & 3) { |
| 761 | err = -EINVAL; |
| 762 | goto out; |
| 763 | } |
| 764 | |
| 765 | err = carl9170_write_reg(ar, reg, val); |
| 766 | if (err) |
| 767 | goto out; |
| 768 | |
| 769 | out: |
| 770 | return err ? err : count; |
| 771 | } |
| 772 | DEBUGFS_DECLARE_WO_FILE(hw_iowrite32); |
| 773 | |
| 774 | DEBUGFS_HW_TALLY_FILE(hw_tx_tally, "u"); |
| 775 | DEBUGFS_HW_TALLY_FILE(hw_rx_tally, "u"); |
| 776 | DEBUGFS_HW_TALLY_FILE(hw_phy_errors, "u"); |
| 777 | DEBUGFS_HW_REG_FILE(hw_wlan_queue, ".8x"); |
| 778 | DEBUGFS_HW_REG_FILE(hw_pta_queue, ".8x"); |
| 779 | DEBUGFS_HW_REG_FILE(hw_ampdu_info, ".8x"); |
| 780 | DEBUGFS_QUEUE_DUMP(tx_status, 0); |
| 781 | DEBUGFS_QUEUE_DUMP(tx_status, 1); |
| 782 | DEBUGFS_QUEUE_DUMP(tx_status, 2); |
| 783 | DEBUGFS_QUEUE_DUMP(tx_status, 3); |
| 784 | DEBUGFS_QUEUE_DUMP(tx_pending, 0); |
| 785 | DEBUGFS_QUEUE_DUMP(tx_pending, 1); |
| 786 | DEBUGFS_QUEUE_DUMP(tx_pending, 2); |
| 787 | DEBUGFS_QUEUE_DUMP(tx_pending, 3); |
| 788 | DEBUGFS_READONLY_FILE(usb_tx_anch_urbs, 20, "%d", |
| 789 | atomic_read(&ar->tx_anch_urbs)); |
| 790 | DEBUGFS_READONLY_FILE(usb_rx_anch_urbs, 20, "%d", |
| 791 | atomic_read(&ar->rx_anch_urbs)); |
| 792 | DEBUGFS_READONLY_FILE(usb_rx_work_urbs, 20, "%d", |
| 793 | atomic_read(&ar->rx_work_urbs)); |
| 794 | DEBUGFS_READONLY_FILE(usb_rx_pool_urbs, 20, "%d", |
| 795 | atomic_read(&ar->rx_pool_urbs)); |
| 796 | |
| 797 | DEBUGFS_READONLY_FILE(tx_total_queued, 20, "%d", |
| 798 | atomic_read(&ar->tx_total_queued)); |
| 799 | DEBUGFS_READONLY_FILE(tx_ampdu_scheduler, 20, "%d", |
| 800 | atomic_read(&ar->tx_ampdu_scheduler)); |
| 801 | DEBUGFS_READONLY_FILE(tx_ampdu_timeout, 20, "%d", |
| 802 | ar->tx_ampdu_timeout); |
| 803 | |
| 804 | DEBUGFS_READONLY_FILE(tx_total_pending, 20, "%d", |
| 805 | atomic_read(&ar->tx_total_pending)); |
| 806 | |
| 807 | DEBUGFS_READONLY_FILE(tx_ampdu_list_len, 20, "%d", |
| 808 | ar->tx_ampdu_list_len); |
| 809 | |
| 810 | DEBUGFS_READONLY_FILE(tx_ampdu_upload, 20, "%d", |
| 811 | atomic_read(&ar->tx_ampdu_upload)); |
| 812 | |
| 813 | DEBUGFS_READONLY_FILE(tx_janitor_last_run, 64, "last run:%d ms ago", |
| 814 | jiffies_to_msecs(jiffies - ar->tx_janitor_last_run)); |
| 815 | |
| 816 | DEBUGFS_READONLY_FILE(tx_dropped, 20, "%d", ar->tx_dropped); |
| 817 | |
| 818 | DEBUGFS_READONLY_FILE(rx_dropped, 20, "%d", ar->rx_dropped); |
| 819 | |
| 820 | DEBUGFS_READONLY_FILE(sniffer_enabled, 20, "%d", ar->sniffer_enabled); |
| 821 | DEBUGFS_READONLY_FILE(rx_software_decryption, 20, "%d", |
| 822 | ar->rx_software_decryption); |
| 823 | DEBUGFS_READONLY_FILE(ampdu_factor, 20, "%d", |
| 824 | ar->current_factor); |
| 825 | DEBUGFS_READONLY_FILE(ampdu_density, 20, "%d", |
| 826 | ar->current_density); |
| 827 | |
| 828 | DEBUGFS_READONLY_FILE(beacon_int, 20, "%d TU", ar->global_beacon_int); |
| 829 | DEBUGFS_READONLY_FILE(pretbtt, 20, "%d TU", ar->global_pretbtt); |
| 830 | |
| 831 | void carl9170_debugfs_register(struct ar9170 *ar) |
| 832 | { |
| 833 | ar->debug_dir = debugfs_create_dir(KBUILD_MODNAME, |
| 834 | ar->hw->wiphy->debugfsdir); |
| 835 | |
| 836 | #define DEBUGFS_ADD(name) \ |
| 837 | debugfs_create_file(#name, carl_debugfs_##name ##_ops.attr, \ |
| 838 | ar->debug_dir, ar, \ |
| 839 | &carl_debugfs_##name ## _ops.fops); |
| 840 | |
| 841 | DEBUGFS_ADD(usb_tx_anch_urbs); |
| 842 | DEBUGFS_ADD(usb_rx_pool_urbs); |
| 843 | DEBUGFS_ADD(usb_rx_anch_urbs); |
| 844 | DEBUGFS_ADD(usb_rx_work_urbs); |
| 845 | |
| 846 | DEBUGFS_ADD(tx_total_queued); |
| 847 | DEBUGFS_ADD(tx_total_pending); |
| 848 | DEBUGFS_ADD(tx_dropped); |
| 849 | DEBUGFS_ADD(tx_stuck); |
| 850 | DEBUGFS_ADD(tx_ampdu_upload); |
| 851 | DEBUGFS_ADD(tx_ampdu_scheduler); |
| 852 | DEBUGFS_ADD(tx_ampdu_list_len); |
| 853 | |
| 854 | DEBUGFS_ADD(rx_dropped); |
| 855 | DEBUGFS_ADD(sniffer_enabled); |
| 856 | DEBUGFS_ADD(rx_software_decryption); |
| 857 | |
| 858 | DEBUGFS_ADD(mem_usage); |
| 859 | DEBUGFS_ADD(qos_stat); |
| 860 | DEBUGFS_ADD(sta_psm); |
| 861 | DEBUGFS_ADD(ampdu_state); |
| 862 | |
| 863 | DEBUGFS_ADD(hw_tx_tally); |
| 864 | DEBUGFS_ADD(hw_rx_tally); |
| 865 | DEBUGFS_ADD(hw_phy_errors); |
| 866 | DEBUGFS_ADD(phy_noise); |
| 867 | |
| 868 | DEBUGFS_ADD(hw_wlan_queue); |
| 869 | DEBUGFS_ADD(hw_pta_queue); |
| 870 | DEBUGFS_ADD(hw_ampdu_info); |
| 871 | |
| 872 | DEBUGFS_ADD(ampdu_density); |
| 873 | DEBUGFS_ADD(ampdu_factor); |
| 874 | |
| 875 | DEBUGFS_ADD(tx_ampdu_timeout); |
| 876 | |
| 877 | DEBUGFS_ADD(tx_janitor_last_run); |
| 878 | |
| 879 | DEBUGFS_ADD(tx_status_0); |
| 880 | DEBUGFS_ADD(tx_status_1); |
| 881 | DEBUGFS_ADD(tx_status_2); |
| 882 | DEBUGFS_ADD(tx_status_3); |
| 883 | |
| 884 | DEBUGFS_ADD(tx_pending_0); |
| 885 | DEBUGFS_ADD(tx_pending_1); |
| 886 | DEBUGFS_ADD(tx_pending_2); |
| 887 | DEBUGFS_ADD(tx_pending_3); |
| 888 | |
| 889 | DEBUGFS_ADD(hw_ioread32); |
| 890 | DEBUGFS_ADD(hw_iowrite32); |
| 891 | DEBUGFS_ADD(bug); |
| 892 | |
| 893 | DEBUGFS_ADD(erp); |
| 894 | |
| 895 | DEBUGFS_ADD(vif_dump); |
| 896 | |
| 897 | DEBUGFS_ADD(beacon_int); |
| 898 | DEBUGFS_ADD(pretbtt); |
| 899 | |
| 900 | #undef DEBUGFS_ADD |
| 901 | } |
| 902 | |
| 903 | void carl9170_debugfs_unregister(struct ar9170 *ar) |
| 904 | { |
| 905 | debugfs_remove_recursive(ar->debug_dir); |
| 906 | } |