1 /* 2 * Copyright (c) 2007-2008 Bruno Randolf <bruno@thinktube.com> 3 * 4 * This file is free software: you may copy, redistribute and/or modify it 5 * under the terms of the GNU General Public License as published by the 6 * Free Software Foundation, either version 2 of the License, or (at your 7 * option) any later version. 8 * 9 * This file is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <http://www.gnu.org/licenses/>. 16 * 17 * 18 * This file incorporates work covered by the following copyright and 19 * permission notice: 20 * 21 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting 22 * Copyright (c) 2004-2005 Atheros Communications, Inc. 23 * Copyright (c) 2006 Devicescape Software, Inc. 24 * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> 25 * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> 26 * 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 1. Redistributions of source code must retain the above copyright 33 * notice, this list of conditions and the following disclaimer, 34 * without modification. 35 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 36 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 37 * redistribution must be conditioned upon including a substantially 38 * similar Disclaimer requirement for further binary redistribution. 39 * 3. Neither the names of the above-listed copyright holders nor the names 40 * of any contributors may be used to endorse or promote products derived 41 * from this software without specific prior written permission. 42 * 43 * Alternatively, this software may be distributed under the terms of the 44 * GNU General Public License ("GPL") version 2 as published by the Free 45 * Software Foundation. 46 * 47 * NO WARRANTY 48 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 49 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 50 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 51 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 52 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 53 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 56 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 58 * THE POSSIBILITY OF SUCH DAMAGES. 59 */ 60 61 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 62 63 #include <linux/export.h> 64 #include <linux/moduleparam.h> 65 66 #include <linux/seq_file.h> 67 #include <linux/list.h> 68 #include "debug.h" 69 #include "ath5k.h" 70 #include "reg.h" 71 #include "base.h" 72 73 static unsigned int ath5k_debug; 74 module_param_named(debug, ath5k_debug, uint, 0); 75 76 77 /* debugfs: registers */ 78 79 struct reg { 80 const char *name; 81 int addr; 82 }; 83 84 #define REG_STRUCT_INIT(r) { #r, r } 85 86 /* just a few random registers, might want to add more */ 87 static const struct reg regs[] = { 88 REG_STRUCT_INIT(AR5K_CR), 89 REG_STRUCT_INIT(AR5K_RXDP), 90 REG_STRUCT_INIT(AR5K_CFG), 91 REG_STRUCT_INIT(AR5K_IER), 92 REG_STRUCT_INIT(AR5K_BCR), 93 REG_STRUCT_INIT(AR5K_RTSD0), 94 REG_STRUCT_INIT(AR5K_RTSD1), 95 REG_STRUCT_INIT(AR5K_TXCFG), 96 REG_STRUCT_INIT(AR5K_RXCFG), 97 REG_STRUCT_INIT(AR5K_RXJLA), 98 REG_STRUCT_INIT(AR5K_MIBC), 99 REG_STRUCT_INIT(AR5K_TOPS), 100 REG_STRUCT_INIT(AR5K_RXNOFRM), 101 REG_STRUCT_INIT(AR5K_TXNOFRM), 102 REG_STRUCT_INIT(AR5K_RPGTO), 103 REG_STRUCT_INIT(AR5K_RFCNT), 104 REG_STRUCT_INIT(AR5K_MISC), 105 REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT), 106 REG_STRUCT_INIT(AR5K_ISR), 107 REG_STRUCT_INIT(AR5K_PISR), 108 REG_STRUCT_INIT(AR5K_SISR0), 109 REG_STRUCT_INIT(AR5K_SISR1), 110 REG_STRUCT_INIT(AR5K_SISR2), 111 REG_STRUCT_INIT(AR5K_SISR3), 112 REG_STRUCT_INIT(AR5K_SISR4), 113 REG_STRUCT_INIT(AR5K_IMR), 114 REG_STRUCT_INIT(AR5K_PIMR), 115 REG_STRUCT_INIT(AR5K_SIMR0), 116 REG_STRUCT_INIT(AR5K_SIMR1), 117 REG_STRUCT_INIT(AR5K_SIMR2), 118 REG_STRUCT_INIT(AR5K_SIMR3), 119 REG_STRUCT_INIT(AR5K_SIMR4), 120 REG_STRUCT_INIT(AR5K_DCM_ADDR), 121 REG_STRUCT_INIT(AR5K_DCCFG), 122 REG_STRUCT_INIT(AR5K_CCFG), 123 REG_STRUCT_INIT(AR5K_CPC0), 124 REG_STRUCT_INIT(AR5K_CPC1), 125 REG_STRUCT_INIT(AR5K_CPC2), 126 REG_STRUCT_INIT(AR5K_CPC3), 127 REG_STRUCT_INIT(AR5K_CPCOVF), 128 REG_STRUCT_INIT(AR5K_RESET_CTL), 129 REG_STRUCT_INIT(AR5K_SLEEP_CTL), 130 REG_STRUCT_INIT(AR5K_INTPEND), 131 REG_STRUCT_INIT(AR5K_SFR), 132 REG_STRUCT_INIT(AR5K_PCICFG), 133 REG_STRUCT_INIT(AR5K_GPIOCR), 134 REG_STRUCT_INIT(AR5K_GPIODO), 135 REG_STRUCT_INIT(AR5K_SREV), 136 }; 137 138 static void *reg_start(struct seq_file *seq, loff_t *pos) 139 { 140 return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL; 141 } 142 143 static void reg_stop(struct seq_file *seq, void *p) 144 { 145 /* nothing to do */ 146 } 147 148 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos) 149 { 150 ++*pos; 151 return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL; 152 } 153 154 static int reg_show(struct seq_file *seq, void *p) 155 { 156 struct ath5k_hw *ah = seq->private; 157 struct reg *r = p; 158 seq_printf(seq, "%-25s0x%08x\n", r->name, 159 ath5k_hw_reg_read(ah, r->addr)); 160 return 0; 161 } 162 163 static const struct seq_operations register_seq_ops = { 164 .start = reg_start, 165 .next = reg_next, 166 .stop = reg_stop, 167 .show = reg_show 168 }; 169 170 static int open_file_registers(struct inode *inode, struct file *file) 171 { 172 struct seq_file *s; 173 int res; 174 res = seq_open(file, ®ister_seq_ops); 175 if (res == 0) { 176 s = file->private_data; 177 s->private = inode->i_private; 178 } 179 return res; 180 } 181 182 static const struct file_operations fops_registers = { 183 .open = open_file_registers, 184 .read = seq_read, 185 .llseek = seq_lseek, 186 .release = seq_release, 187 .owner = THIS_MODULE, 188 }; 189 190 191 /* debugfs: beacons */ 192 193 static ssize_t read_file_beacon(struct file *file, char __user *user_buf, 194 size_t count, loff_t *ppos) 195 { 196 struct ath5k_hw *ah = file->private_data; 197 char buf[500]; 198 unsigned int len = 0; 199 unsigned int v; 200 u64 tsf; 201 202 v = ath5k_hw_reg_read(ah, AR5K_BEACON); 203 len += snprintf(buf + len, sizeof(buf) - len, 204 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n", 205 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD, 206 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S); 207 208 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n", 209 "AR5K_LAST_TSTP", ath5k_hw_reg_read(ah, AR5K_LAST_TSTP)); 210 211 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n\n", 212 "AR5K_BEACON_CNT", ath5k_hw_reg_read(ah, AR5K_BEACON_CNT)); 213 214 v = ath5k_hw_reg_read(ah, AR5K_TIMER0); 215 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n", 216 "AR5K_TIMER0 (TBTT)", v, v); 217 218 v = ath5k_hw_reg_read(ah, AR5K_TIMER1); 219 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n", 220 "AR5K_TIMER1 (DMA)", v, v >> 3); 221 222 v = ath5k_hw_reg_read(ah, AR5K_TIMER2); 223 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n", 224 "AR5K_TIMER2 (SWBA)", v, v >> 3); 225 226 v = ath5k_hw_reg_read(ah, AR5K_TIMER3); 227 len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n", 228 "AR5K_TIMER3 (ATIM)", v, v); 229 230 tsf = ath5k_hw_get_tsf64(ah); 231 len += snprintf(buf + len, sizeof(buf) - len, 232 "TSF\t\t0x%016llx\tTU: %08x\n", 233 (unsigned long long)tsf, TSF_TO_TU(tsf)); 234 235 if (len > sizeof(buf)) 236 len = sizeof(buf); 237 238 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 239 } 240 241 static ssize_t write_file_beacon(struct file *file, 242 const char __user *userbuf, 243 size_t count, loff_t *ppos) 244 { 245 struct ath5k_hw *ah = file->private_data; 246 char buf[20]; 247 248 count = min_t(size_t, count, sizeof(buf) - 1); 249 if (copy_from_user(buf, userbuf, count)) 250 return -EFAULT; 251 252 buf[count] = '\0'; 253 if (strncmp(buf, "disable", 7) == 0) { 254 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE); 255 pr_info("debugfs disable beacons\n"); 256 } else if (strncmp(buf, "enable", 6) == 0) { 257 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE); 258 pr_info("debugfs enable beacons\n"); 259 } 260 return count; 261 } 262 263 static const struct file_operations fops_beacon = { 264 .read = read_file_beacon, 265 .write = write_file_beacon, 266 .open = simple_open, 267 .owner = THIS_MODULE, 268 .llseek = default_llseek, 269 }; 270 271 272 /* debugfs: reset */ 273 274 static ssize_t write_file_reset(struct file *file, 275 const char __user *userbuf, 276 size_t count, loff_t *ppos) 277 { 278 struct ath5k_hw *ah = file->private_data; 279 ATH5K_DBG(ah, ATH5K_DEBUG_RESET, "debug file triggered reset\n"); 280 ieee80211_queue_work(ah->hw, &ah->reset_work); 281 return count; 282 } 283 284 static const struct file_operations fops_reset = { 285 .write = write_file_reset, 286 .open = simple_open, 287 .owner = THIS_MODULE, 288 .llseek = noop_llseek, 289 }; 290 291 292 /* debugfs: debug level */ 293 294 static const struct { 295 enum ath5k_debug_level level; 296 const char *name; 297 const char *desc; 298 } dbg_info[] = { 299 { ATH5K_DEBUG_RESET, "reset", "reset and initialization" }, 300 { ATH5K_DEBUG_INTR, "intr", "interrupt handling" }, 301 { ATH5K_DEBUG_MODE, "mode", "mode init/setup" }, 302 { ATH5K_DEBUG_XMIT, "xmit", "basic xmit operation" }, 303 { ATH5K_DEBUG_BEACON, "beacon", "beacon handling" }, 304 { ATH5K_DEBUG_CALIBRATE, "calib", "periodic calibration" }, 305 { ATH5K_DEBUG_TXPOWER, "txpower", "transmit power setting" }, 306 { ATH5K_DEBUG_LED, "led", "LED management" }, 307 { ATH5K_DEBUG_DUMPBANDS, "dumpbands", "dump bands" }, 308 { ATH5K_DEBUG_DMA, "dma", "dma start/stop" }, 309 { ATH5K_DEBUG_ANI, "ani", "adaptive noise immunity" }, 310 { ATH5K_DEBUG_DESC, "desc", "descriptor chains" }, 311 { ATH5K_DEBUG_ANY, "all", "show all debug levels" }, 312 }; 313 314 static ssize_t read_file_debug(struct file *file, char __user *user_buf, 315 size_t count, loff_t *ppos) 316 { 317 struct ath5k_hw *ah = file->private_data; 318 char buf[700]; 319 unsigned int len = 0; 320 unsigned int i; 321 322 len += snprintf(buf + len, sizeof(buf) - len, 323 "DEBUG LEVEL: 0x%08x\n\n", ah->debug.level); 324 325 for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) { 326 len += snprintf(buf + len, sizeof(buf) - len, 327 "%10s %c 0x%08x - %s\n", dbg_info[i].name, 328 ah->debug.level & dbg_info[i].level ? '+' : ' ', 329 dbg_info[i].level, dbg_info[i].desc); 330 } 331 len += snprintf(buf + len, sizeof(buf) - len, 332 "%10s %c 0x%08x - %s\n", dbg_info[i].name, 333 ah->debug.level == dbg_info[i].level ? '+' : ' ', 334 dbg_info[i].level, dbg_info[i].desc); 335 336 if (len > sizeof(buf)) 337 len = sizeof(buf); 338 339 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 340 } 341 342 static ssize_t write_file_debug(struct file *file, 343 const char __user *userbuf, 344 size_t count, loff_t *ppos) 345 { 346 struct ath5k_hw *ah = file->private_data; 347 unsigned int i; 348 char buf[20]; 349 350 count = min_t(size_t, count, sizeof(buf) - 1); 351 if (copy_from_user(buf, userbuf, count)) 352 return -EFAULT; 353 354 buf[count] = '\0'; 355 for (i = 0; i < ARRAY_SIZE(dbg_info); i++) { 356 if (strncmp(buf, dbg_info[i].name, 357 strlen(dbg_info[i].name)) == 0) { 358 ah->debug.level ^= dbg_info[i].level; /* toggle bit */ 359 break; 360 } 361 } 362 return count; 363 } 364 365 static const struct file_operations fops_debug = { 366 .read = read_file_debug, 367 .write = write_file_debug, 368 .open = simple_open, 369 .owner = THIS_MODULE, 370 .llseek = default_llseek, 371 }; 372 373 374 /* debugfs: antenna */ 375 376 static ssize_t read_file_antenna(struct file *file, char __user *user_buf, 377 size_t count, loff_t *ppos) 378 { 379 struct ath5k_hw *ah = file->private_data; 380 char buf[700]; 381 unsigned int len = 0; 382 unsigned int i; 383 unsigned int v; 384 385 len += snprintf(buf + len, sizeof(buf) - len, "antenna mode\t%d\n", 386 ah->ah_ant_mode); 387 len += snprintf(buf + len, sizeof(buf) - len, "default antenna\t%d\n", 388 ah->ah_def_ant); 389 len += snprintf(buf + len, sizeof(buf) - len, "tx antenna\t%d\n", 390 ah->ah_tx_ant); 391 392 len += snprintf(buf + len, sizeof(buf) - len, "\nANTENNA\t\tRX\tTX\n"); 393 for (i = 1; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) { 394 len += snprintf(buf + len, sizeof(buf) - len, 395 "[antenna %d]\t%d\t%d\n", 396 i, ah->stats.antenna_rx[i], ah->stats.antenna_tx[i]); 397 } 398 len += snprintf(buf + len, sizeof(buf) - len, "[invalid]\t%d\t%d\n", 399 ah->stats.antenna_rx[0], ah->stats.antenna_tx[0]); 400 401 v = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA); 402 len += snprintf(buf + len, sizeof(buf) - len, 403 "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v); 404 405 v = ath5k_hw_reg_read(ah, AR5K_STA_ID1); 406 len += snprintf(buf + len, sizeof(buf) - len, 407 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n", 408 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0); 409 len += snprintf(buf + len, sizeof(buf) - len, 410 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n", 411 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0); 412 len += snprintf(buf + len, sizeof(buf) - len, 413 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n", 414 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0); 415 len += snprintf(buf + len, sizeof(buf) - len, 416 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n", 417 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0); 418 419 v = ath5k_hw_reg_read(ah, AR5K_PHY_AGCCTL); 420 len += snprintf(buf + len, sizeof(buf) - len, 421 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n", 422 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0); 423 424 v = ath5k_hw_reg_read(ah, AR5K_PHY_RESTART); 425 len += snprintf(buf + len, sizeof(buf) - len, 426 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n", 427 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S); 428 429 v = ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ANT_DIV); 430 len += snprintf(buf + len, sizeof(buf) - len, 431 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n", 432 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0); 433 434 v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_0); 435 len += snprintf(buf + len, sizeof(buf) - len, 436 "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v); 437 v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_1); 438 len += snprintf(buf + len, sizeof(buf) - len, 439 "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v); 440 441 if (len > sizeof(buf)) 442 len = sizeof(buf); 443 444 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 445 } 446 447 static ssize_t write_file_antenna(struct file *file, 448 const char __user *userbuf, 449 size_t count, loff_t *ppos) 450 { 451 struct ath5k_hw *ah = file->private_data; 452 unsigned int i; 453 char buf[20]; 454 455 count = min_t(size_t, count, sizeof(buf) - 1); 456 if (copy_from_user(buf, userbuf, count)) 457 return -EFAULT; 458 459 buf[count] = '\0'; 460 if (strncmp(buf, "diversity", 9) == 0) { 461 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); 462 pr_info("debug: enable diversity\n"); 463 } else if (strncmp(buf, "fixed-a", 7) == 0) { 464 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); 465 pr_info("debug: fixed antenna A\n"); 466 } else if (strncmp(buf, "fixed-b", 7) == 0) { 467 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); 468 pr_info("debug: fixed antenna B\n"); 469 } else if (strncmp(buf, "clear", 5) == 0) { 470 for (i = 0; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) { 471 ah->stats.antenna_rx[i] = 0; 472 ah->stats.antenna_tx[i] = 0; 473 } 474 pr_info("debug: cleared antenna stats\n"); 475 } 476 return count; 477 } 478 479 static const struct file_operations fops_antenna = { 480 .read = read_file_antenna, 481 .write = write_file_antenna, 482 .open = simple_open, 483 .owner = THIS_MODULE, 484 .llseek = default_llseek, 485 }; 486 487 /* debugfs: misc */ 488 489 static ssize_t read_file_misc(struct file *file, char __user *user_buf, 490 size_t count, loff_t *ppos) 491 { 492 struct ath5k_hw *ah = file->private_data; 493 char buf[700]; 494 unsigned int len = 0; 495 u32 filt = ath5k_hw_get_rx_filter(ah); 496 497 len += snprintf(buf + len, sizeof(buf) - len, "bssid-mask: %pM\n", 498 ah->bssidmask); 499 len += snprintf(buf + len, sizeof(buf) - len, "filter-flags: 0x%x ", 500 filt); 501 if (filt & AR5K_RX_FILTER_UCAST) 502 len += snprintf(buf + len, sizeof(buf) - len, " UCAST"); 503 if (filt & AR5K_RX_FILTER_MCAST) 504 len += snprintf(buf + len, sizeof(buf) - len, " MCAST"); 505 if (filt & AR5K_RX_FILTER_BCAST) 506 len += snprintf(buf + len, sizeof(buf) - len, " BCAST"); 507 if (filt & AR5K_RX_FILTER_CONTROL) 508 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL"); 509 if (filt & AR5K_RX_FILTER_BEACON) 510 len += snprintf(buf + len, sizeof(buf) - len, " BEACON"); 511 if (filt & AR5K_RX_FILTER_PROM) 512 len += snprintf(buf + len, sizeof(buf) - len, " PROM"); 513 if (filt & AR5K_RX_FILTER_XRPOLL) 514 len += snprintf(buf + len, sizeof(buf) - len, " XRPOLL"); 515 if (filt & AR5K_RX_FILTER_PROBEREQ) 516 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ"); 517 if (filt & AR5K_RX_FILTER_PHYERR_5212) 518 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR-5212"); 519 if (filt & AR5K_RX_FILTER_RADARERR_5212) 520 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5212"); 521 if (filt & AR5K_RX_FILTER_PHYERR_5211) 522 snprintf(buf + len, sizeof(buf) - len, " PHYERR-5211"); 523 if (filt & AR5K_RX_FILTER_RADARERR_5211) 524 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5211"); 525 526 len += snprintf(buf + len, sizeof(buf) - len, "\nopmode: %s (%d)\n", 527 ath_opmode_to_string(ah->opmode), ah->opmode); 528 529 if (len > sizeof(buf)) 530 len = sizeof(buf); 531 532 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 533 } 534 535 static const struct file_operations fops_misc = { 536 .read = read_file_misc, 537 .open = simple_open, 538 .owner = THIS_MODULE, 539 }; 540 541 542 /* debugfs: frameerrors */ 543 544 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf, 545 size_t count, loff_t *ppos) 546 { 547 struct ath5k_hw *ah = file->private_data; 548 struct ath5k_statistics *st = &ah->stats; 549 char buf[700]; 550 unsigned int len = 0; 551 int i; 552 553 len += snprintf(buf + len, sizeof(buf) - len, 554 "RX\n---------------------\n"); 555 len += snprintf(buf + len, sizeof(buf) - len, "CRC\t%u\t(%u%%)\n", 556 st->rxerr_crc, 557 st->rx_all_count > 0 ? 558 st->rxerr_crc * 100 / st->rx_all_count : 0); 559 len += snprintf(buf + len, sizeof(buf) - len, "PHY\t%u\t(%u%%)\n", 560 st->rxerr_phy, 561 st->rx_all_count > 0 ? 562 st->rxerr_phy * 100 / st->rx_all_count : 0); 563 for (i = 0; i < 32; i++) { 564 if (st->rxerr_phy_code[i]) 565 len += snprintf(buf + len, sizeof(buf) - len, 566 " phy_err[%u]\t%u\n", 567 i, st->rxerr_phy_code[i]); 568 } 569 570 len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n", 571 st->rxerr_fifo, 572 st->rx_all_count > 0 ? 573 st->rxerr_fifo * 100 / st->rx_all_count : 0); 574 len += snprintf(buf + len, sizeof(buf) - len, "decrypt\t%u\t(%u%%)\n", 575 st->rxerr_decrypt, 576 st->rx_all_count > 0 ? 577 st->rxerr_decrypt * 100 / st->rx_all_count : 0); 578 len += snprintf(buf + len, sizeof(buf) - len, "MIC\t%u\t(%u%%)\n", 579 st->rxerr_mic, 580 st->rx_all_count > 0 ? 581 st->rxerr_mic * 100 / st->rx_all_count : 0); 582 len += snprintf(buf + len, sizeof(buf) - len, "process\t%u\t(%u%%)\n", 583 st->rxerr_proc, 584 st->rx_all_count > 0 ? 585 st->rxerr_proc * 100 / st->rx_all_count : 0); 586 len += snprintf(buf + len, sizeof(buf) - len, "jumbo\t%u\t(%u%%)\n", 587 st->rxerr_jumbo, 588 st->rx_all_count > 0 ? 589 st->rxerr_jumbo * 100 / st->rx_all_count : 0); 590 len += snprintf(buf + len, sizeof(buf) - len, "[RX all\t%u]\n", 591 st->rx_all_count); 592 len += snprintf(buf + len, sizeof(buf) - len, "RX-all-bytes\t%u\n", 593 st->rx_bytes_count); 594 595 len += snprintf(buf + len, sizeof(buf) - len, 596 "\nTX\n---------------------\n"); 597 len += snprintf(buf + len, sizeof(buf) - len, "retry\t%u\t(%u%%)\n", 598 st->txerr_retry, 599 st->tx_all_count > 0 ? 600 st->txerr_retry * 100 / st->tx_all_count : 0); 601 len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n", 602 st->txerr_fifo, 603 st->tx_all_count > 0 ? 604 st->txerr_fifo * 100 / st->tx_all_count : 0); 605 len += snprintf(buf + len, sizeof(buf) - len, "filter\t%u\t(%u%%)\n", 606 st->txerr_filt, 607 st->tx_all_count > 0 ? 608 st->txerr_filt * 100 / st->tx_all_count : 0); 609 len += snprintf(buf + len, sizeof(buf) - len, "[TX all\t%u]\n", 610 st->tx_all_count); 611 len += snprintf(buf + len, sizeof(buf) - len, "TX-all-bytes\t%u\n", 612 st->tx_bytes_count); 613 614 if (len > sizeof(buf)) 615 len = sizeof(buf); 616 617 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 618 } 619 620 static ssize_t write_file_frameerrors(struct file *file, 621 const char __user *userbuf, 622 size_t count, loff_t *ppos) 623 { 624 struct ath5k_hw *ah = file->private_data; 625 struct ath5k_statistics *st = &ah->stats; 626 char buf[20]; 627 628 count = min_t(size_t, count, sizeof(buf) - 1); 629 if (copy_from_user(buf, userbuf, count)) 630 return -EFAULT; 631 632 buf[count] = '\0'; 633 if (strncmp(buf, "clear", 5) == 0) { 634 st->rxerr_crc = 0; 635 st->rxerr_phy = 0; 636 st->rxerr_fifo = 0; 637 st->rxerr_decrypt = 0; 638 st->rxerr_mic = 0; 639 st->rxerr_proc = 0; 640 st->rxerr_jumbo = 0; 641 st->rx_all_count = 0; 642 st->txerr_retry = 0; 643 st->txerr_fifo = 0; 644 st->txerr_filt = 0; 645 st->tx_all_count = 0; 646 pr_info("debug: cleared frameerrors stats\n"); 647 } 648 return count; 649 } 650 651 static const struct file_operations fops_frameerrors = { 652 .read = read_file_frameerrors, 653 .write = write_file_frameerrors, 654 .open = simple_open, 655 .owner = THIS_MODULE, 656 .llseek = default_llseek, 657 }; 658 659 660 /* debugfs: ani */ 661 662 static ssize_t read_file_ani(struct file *file, char __user *user_buf, 663 size_t count, loff_t *ppos) 664 { 665 struct ath5k_hw *ah = file->private_data; 666 struct ath5k_statistics *st = &ah->stats; 667 struct ath5k_ani_state *as = &ah->ani_state; 668 669 char buf[700]; 670 unsigned int len = 0; 671 672 len += snprintf(buf + len, sizeof(buf) - len, 673 "HW has PHY error counters:\t%s\n", 674 ah->ah_capabilities.cap_has_phyerr_counters ? 675 "yes" : "no"); 676 len += snprintf(buf + len, sizeof(buf) - len, 677 "HW max spur immunity level:\t%d\n", 678 as->max_spur_level); 679 len += snprintf(buf + len, sizeof(buf) - len, 680 "\nANI state\n--------------------------------------------\n"); 681 len += snprintf(buf + len, sizeof(buf) - len, "operating mode:\t\t\t"); 682 switch (as->ani_mode) { 683 case ATH5K_ANI_MODE_OFF: 684 len += snprintf(buf + len, sizeof(buf) - len, "OFF\n"); 685 break; 686 case ATH5K_ANI_MODE_MANUAL_LOW: 687 len += snprintf(buf + len, sizeof(buf) - len, 688 "MANUAL LOW\n"); 689 break; 690 case ATH5K_ANI_MODE_MANUAL_HIGH: 691 len += snprintf(buf + len, sizeof(buf) - len, 692 "MANUAL HIGH\n"); 693 break; 694 case ATH5K_ANI_MODE_AUTO: 695 len += snprintf(buf + len, sizeof(buf) - len, "AUTO\n"); 696 break; 697 default: 698 len += snprintf(buf + len, sizeof(buf) - len, 699 "??? (not good)\n"); 700 break; 701 } 702 len += snprintf(buf + len, sizeof(buf) - len, 703 "noise immunity level:\t\t%d\n", 704 as->noise_imm_level); 705 len += snprintf(buf + len, sizeof(buf) - len, 706 "spur immunity level:\t\t%d\n", 707 as->spur_level); 708 len += snprintf(buf + len, sizeof(buf) - len, 709 "firstep level:\t\t\t%d\n", 710 as->firstep_level); 711 len += snprintf(buf + len, sizeof(buf) - len, 712 "OFDM weak signal detection:\t%s\n", 713 as->ofdm_weak_sig ? "on" : "off"); 714 len += snprintf(buf + len, sizeof(buf) - len, 715 "CCK weak signal detection:\t%s\n", 716 as->cck_weak_sig ? "on" : "off"); 717 718 len += snprintf(buf + len, sizeof(buf) - len, 719 "\nMIB INTERRUPTS:\t\t%u\n", 720 st->mib_intr); 721 len += snprintf(buf + len, sizeof(buf) - len, 722 "beacon RSSI average:\t%d\n", 723 (int)ewma_read(&ah->ah_beacon_rssi_avg)); 724 725 #define CC_PRINT(_struct, _field) \ 726 _struct._field, \ 727 _struct.cycles > 0 ? \ 728 _struct._field * 100 / _struct.cycles : 0 729 730 len += snprintf(buf + len, sizeof(buf) - len, 731 "profcnt tx\t\t%u\t(%d%%)\n", 732 CC_PRINT(as->last_cc, tx_frame)); 733 len += snprintf(buf + len, sizeof(buf) - len, 734 "profcnt rx\t\t%u\t(%d%%)\n", 735 CC_PRINT(as->last_cc, rx_frame)); 736 len += snprintf(buf + len, sizeof(buf) - len, 737 "profcnt busy\t\t%u\t(%d%%)\n", 738 CC_PRINT(as->last_cc, rx_busy)); 739 #undef CC_PRINT 740 len += snprintf(buf + len, sizeof(buf) - len, "profcnt cycles\t\t%u\n", 741 as->last_cc.cycles); 742 len += snprintf(buf + len, sizeof(buf) - len, 743 "listen time\t\t%d\tlast: %d\n", 744 as->listen_time, as->last_listen); 745 len += snprintf(buf + len, sizeof(buf) - len, 746 "OFDM errors\t\t%u\tlast: %u\tsum: %u\n", 747 as->ofdm_errors, as->last_ofdm_errors, 748 as->sum_ofdm_errors); 749 len += snprintf(buf + len, sizeof(buf) - len, 750 "CCK errors\t\t%u\tlast: %u\tsum: %u\n", 751 as->cck_errors, as->last_cck_errors, 752 as->sum_cck_errors); 753 len += snprintf(buf + len, sizeof(buf) - len, 754 "AR5K_PHYERR_CNT1\t%x\t(=%d)\n", 755 ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1), 756 ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX - 757 ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1))); 758 len += snprintf(buf + len, sizeof(buf) - len, 759 "AR5K_PHYERR_CNT2\t%x\t(=%d)\n", 760 ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2), 761 ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX - 762 ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2))); 763 764 if (len > sizeof(buf)) 765 len = sizeof(buf); 766 767 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 768 } 769 770 static ssize_t write_file_ani(struct file *file, 771 const char __user *userbuf, 772 size_t count, loff_t *ppos) 773 { 774 struct ath5k_hw *ah = file->private_data; 775 char buf[20]; 776 777 count = min_t(size_t, count, sizeof(buf) - 1); 778 if (copy_from_user(buf, userbuf, count)) 779 return -EFAULT; 780 781 buf[count] = '\0'; 782 if (strncmp(buf, "sens-low", 8) == 0) { 783 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_HIGH); 784 } else if (strncmp(buf, "sens-high", 9) == 0) { 785 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_LOW); 786 } else if (strncmp(buf, "ani-off", 7) == 0) { 787 ath5k_ani_init(ah, ATH5K_ANI_MODE_OFF); 788 } else if (strncmp(buf, "ani-on", 6) == 0) { 789 ath5k_ani_init(ah, ATH5K_ANI_MODE_AUTO); 790 } else if (strncmp(buf, "noise-low", 9) == 0) { 791 ath5k_ani_set_noise_immunity_level(ah, 0); 792 } else if (strncmp(buf, "noise-high", 10) == 0) { 793 ath5k_ani_set_noise_immunity_level(ah, 794 ATH5K_ANI_MAX_NOISE_IMM_LVL); 795 } else if (strncmp(buf, "spur-low", 8) == 0) { 796 ath5k_ani_set_spur_immunity_level(ah, 0); 797 } else if (strncmp(buf, "spur-high", 9) == 0) { 798 ath5k_ani_set_spur_immunity_level(ah, 799 ah->ani_state.max_spur_level); 800 } else if (strncmp(buf, "fir-low", 7) == 0) { 801 ath5k_ani_set_firstep_level(ah, 0); 802 } else if (strncmp(buf, "fir-high", 8) == 0) { 803 ath5k_ani_set_firstep_level(ah, ATH5K_ANI_MAX_FIRSTEP_LVL); 804 } else if (strncmp(buf, "ofdm-off", 8) == 0) { 805 ath5k_ani_set_ofdm_weak_signal_detection(ah, false); 806 } else if (strncmp(buf, "ofdm-on", 7) == 0) { 807 ath5k_ani_set_ofdm_weak_signal_detection(ah, true); 808 } else if (strncmp(buf, "cck-off", 7) == 0) { 809 ath5k_ani_set_cck_weak_signal_detection(ah, false); 810 } else if (strncmp(buf, "cck-on", 6) == 0) { 811 ath5k_ani_set_cck_weak_signal_detection(ah, true); 812 } 813 return count; 814 } 815 816 static const struct file_operations fops_ani = { 817 .read = read_file_ani, 818 .write = write_file_ani, 819 .open = simple_open, 820 .owner = THIS_MODULE, 821 .llseek = default_llseek, 822 }; 823 824 825 /* debugfs: queues etc */ 826 827 static ssize_t read_file_queue(struct file *file, char __user *user_buf, 828 size_t count, loff_t *ppos) 829 { 830 struct ath5k_hw *ah = file->private_data; 831 char buf[700]; 832 unsigned int len = 0; 833 834 struct ath5k_txq *txq; 835 struct ath5k_buf *bf, *bf0; 836 int i, n; 837 838 len += snprintf(buf + len, sizeof(buf) - len, 839 "available txbuffers: %d\n", ah->txbuf_len); 840 841 for (i = 0; i < ARRAY_SIZE(ah->txqs); i++) { 842 txq = &ah->txqs[i]; 843 844 len += snprintf(buf + len, sizeof(buf) - len, 845 "%02d: %ssetup\n", i, txq->setup ? "" : "not "); 846 847 if (!txq->setup) 848 continue; 849 850 n = 0; 851 spin_lock_bh(&txq->lock); 852 list_for_each_entry_safe(bf, bf0, &txq->q, list) 853 n++; 854 spin_unlock_bh(&txq->lock); 855 856 len += snprintf(buf + len, sizeof(buf) - len, 857 " len: %d bufs: %d\n", txq->txq_len, n); 858 len += snprintf(buf + len, sizeof(buf) - len, 859 " stuck: %d\n", txq->txq_stuck); 860 } 861 862 if (len > sizeof(buf)) 863 len = sizeof(buf); 864 865 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 866 } 867 868 static ssize_t write_file_queue(struct file *file, 869 const char __user *userbuf, 870 size_t count, loff_t *ppos) 871 { 872 struct ath5k_hw *ah = file->private_data; 873 char buf[20]; 874 875 count = min_t(size_t, count, sizeof(buf) - 1); 876 if (copy_from_user(buf, userbuf, count)) 877 return -EFAULT; 878 879 buf[count] = '\0'; 880 if (strncmp(buf, "start", 5) == 0) 881 ieee80211_wake_queues(ah->hw); 882 else if (strncmp(buf, "stop", 4) == 0) 883 ieee80211_stop_queues(ah->hw); 884 885 return count; 886 } 887 888 889 static const struct file_operations fops_queue = { 890 .read = read_file_queue, 891 .write = write_file_queue, 892 .open = simple_open, 893 .owner = THIS_MODULE, 894 .llseek = default_llseek, 895 }; 896 897 898 void 899 ath5k_debug_init_device(struct ath5k_hw *ah) 900 { 901 struct dentry *phydir; 902 903 ah->debug.level = ath5k_debug; 904 905 phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir); 906 if (!phydir) 907 return; 908 909 debugfs_create_file("debug", S_IWUSR | S_IRUSR, phydir, ah, 910 &fops_debug); 911 912 debugfs_create_file("registers", S_IRUSR, phydir, ah, &fops_registers); 913 914 debugfs_create_file("beacon", S_IWUSR | S_IRUSR, phydir, ah, 915 &fops_beacon); 916 917 debugfs_create_file("reset", S_IWUSR, phydir, ah, &fops_reset); 918 919 debugfs_create_file("antenna", S_IWUSR | S_IRUSR, phydir, ah, 920 &fops_antenna); 921 922 debugfs_create_file("misc", S_IRUSR, phydir, ah, &fops_misc); 923 924 debugfs_create_file("frameerrors", S_IWUSR | S_IRUSR, phydir, ah, 925 &fops_frameerrors); 926 927 debugfs_create_file("ani", S_IWUSR | S_IRUSR, phydir, ah, &fops_ani); 928 929 debugfs_create_file("queue", S_IWUSR | S_IRUSR, phydir, ah, 930 &fops_queue); 931 932 debugfs_create_bool("32khz_clock", S_IWUSR | S_IRUSR, phydir, 933 &ah->ah_use_32khz_clock); 934 } 935 936 /* functions used in other places */ 937 938 void 939 ath5k_debug_dump_bands(struct ath5k_hw *ah) 940 { 941 unsigned int b, i; 942 943 if (likely(!(ah->debug.level & ATH5K_DEBUG_DUMPBANDS))) 944 return; 945 946 BUG_ON(!ah->sbands); 947 948 for (b = 0; b < IEEE80211_NUM_BANDS; b++) { 949 struct ieee80211_supported_band *band = &ah->sbands[b]; 950 char bname[6]; 951 switch (band->band) { 952 case IEEE80211_BAND_2GHZ: 953 strcpy(bname, "2 GHz"); 954 break; 955 case IEEE80211_BAND_5GHZ: 956 strcpy(bname, "5 GHz"); 957 break; 958 default: 959 printk(KERN_DEBUG "Band not supported: %d\n", 960 band->band); 961 return; 962 } 963 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname, 964 band->n_channels, band->n_bitrates); 965 printk(KERN_DEBUG " channels:\n"); 966 for (i = 0; i < band->n_channels; i++) 967 printk(KERN_DEBUG " %3d %d %.4x %.4x\n", 968 ieee80211_frequency_to_channel( 969 band->channels[i].center_freq), 970 band->channels[i].center_freq, 971 band->channels[i].hw_value, 972 band->channels[i].flags); 973 printk(KERN_DEBUG " rates:\n"); 974 for (i = 0; i < band->n_bitrates; i++) 975 printk(KERN_DEBUG " %4d %.4x %.4x %.4x\n", 976 band->bitrates[i].bitrate, 977 band->bitrates[i].hw_value, 978 band->bitrates[i].flags, 979 band->bitrates[i].hw_value_short); 980 } 981 } 982 983 static inline void 984 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done, 985 struct ath5k_rx_status *rs) 986 { 987 struct ath5k_desc *ds = bf->desc; 988 struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx; 989 990 printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n", 991 ds, (unsigned long long)bf->daddr, 992 ds->ds_link, ds->ds_data, 993 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1, 994 rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1, 995 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!'); 996 } 997 998 void 999 ath5k_debug_printrxbuffs(struct ath5k_hw *ah) 1000 { 1001 struct ath5k_desc *ds; 1002 struct ath5k_buf *bf; 1003 struct ath5k_rx_status rs = {}; 1004 int status; 1005 1006 if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC))) 1007 return; 1008 1009 printk(KERN_DEBUG "rxdp %x, rxlink %p\n", 1010 ath5k_hw_get_rxdp(ah), ah->rxlink); 1011 1012 spin_lock_bh(&ah->rxbuflock); 1013 list_for_each_entry(bf, &ah->rxbuf, list) { 1014 ds = bf->desc; 1015 status = ah->ah_proc_rx_desc(ah, ds, &rs); 1016 if (!status) 1017 ath5k_debug_printrxbuf(bf, status == 0, &rs); 1018 } 1019 spin_unlock_bh(&ah->rxbuflock); 1020 } 1021 1022 void 1023 ath5k_debug_printtxbuf(struct ath5k_hw *ah, struct ath5k_buf *bf) 1024 { 1025 struct ath5k_desc *ds = bf->desc; 1026 struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212; 1027 struct ath5k_tx_status ts = {}; 1028 int done; 1029 1030 if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC))) 1031 return; 1032 1033 done = ah->ah_proc_tx_desc(ah, bf->desc, &ts); 1034 1035 printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x " 1036 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link, 1037 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1, 1038 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3, 1039 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1, 1040 done ? ' ' : (ts.ts_status == 0) ? '*' : '!'); 1041 } 1042