1/* 2 * Copyright (c) 2008-2009 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include <linux/slab.h> 18#include <asm/unaligned.h> 19 20#include "ath9k.h" 21 22#define REG_WRITE_D(_ah, _reg, _val) \ 23 ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg)) 24#define REG_READ_D(_ah, _reg) \ 25 ath9k_hw_common(_ah)->ops->read((_ah), (_reg)) 26 27static struct dentry *ath9k_debugfs_root; 28 29static int ath9k_debugfs_open(struct inode *inode, struct file *file) 30{ 31 file->private_data = inode->i_private; 32 return 0; 33} 34 35#ifdef CONFIG_ATH_DEBUG 36 37static ssize_t read_file_debug(struct file *file, char __user *user_buf, 38 size_t count, loff_t *ppos) 39{ 40 struct ath_softc *sc = file->private_data; 41 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 42 char buf[32]; 43 unsigned int len; 44 45 len = sprintf(buf, "0x%08x\n", common->debug_mask); 46 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 47} 48 49static ssize_t write_file_debug(struct file *file, const char __user *user_buf, 50 size_t count, loff_t *ppos) 51{ 52 struct ath_softc *sc = file->private_data; 53 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 54 unsigned long mask; 55 char buf[32]; 56 ssize_t len; 57 58 len = min(count, sizeof(buf) - 1); 59 if (copy_from_user(buf, user_buf, len)) 60 return -EFAULT; 61 62 buf[len] = '\0'; 63 if (strict_strtoul(buf, 0, &mask)) 64 return -EINVAL; 65 66 common->debug_mask = mask; 67 return count; 68} 69 70static const struct file_operations fops_debug = { 71 .read = read_file_debug, 72 .write = write_file_debug, 73 .open = ath9k_debugfs_open, 74 .owner = THIS_MODULE 75}; 76 77#endif 78 79#define DMA_BUF_LEN 1024 80 81static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf, 82 size_t count, loff_t *ppos) 83{ 84 struct ath_softc *sc = file->private_data; 85 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 86 char buf[32]; 87 unsigned int len; 88 89 len = sprintf(buf, "0x%08x\n", common->tx_chainmask); 90 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 91} 92 93static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf, 94 size_t count, loff_t *ppos) 95{ 96 struct ath_softc *sc = file->private_data; 97 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 98 unsigned long mask; 99 char buf[32]; 100 ssize_t len; 101 102 len = min(count, sizeof(buf) - 1); 103 if (copy_from_user(buf, user_buf, len)) 104 return -EFAULT; 105 106 buf[len] = '\0'; 107 if (strict_strtoul(buf, 0, &mask)) 108 return -EINVAL; 109 110 common->tx_chainmask = mask; 111 sc->sc_ah->caps.tx_chainmask = mask; 112 return count; 113} 114 115static const struct file_operations fops_tx_chainmask = { 116 .read = read_file_tx_chainmask, 117 .write = write_file_tx_chainmask, 118 .open = ath9k_debugfs_open, 119 .owner = THIS_MODULE 120}; 121 122 123static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf, 124 size_t count, loff_t *ppos) 125{ 126 struct ath_softc *sc = file->private_data; 127 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 128 char buf[32]; 129 unsigned int len; 130 131 len = sprintf(buf, "0x%08x\n", common->rx_chainmask); 132 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 133} 134 135static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf, 136 size_t count, loff_t *ppos) 137{ 138 struct ath_softc *sc = file->private_data; 139 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 140 unsigned long mask; 141 char buf[32]; 142 ssize_t len; 143 144 len = min(count, sizeof(buf) - 1); 145 if (copy_from_user(buf, user_buf, len)) 146 return -EFAULT; 147 148 buf[len] = '\0'; 149 if (strict_strtoul(buf, 0, &mask)) 150 return -EINVAL; 151 152 common->rx_chainmask = mask; 153 sc->sc_ah->caps.rx_chainmask = mask; 154 return count; 155} 156 157static const struct file_operations fops_rx_chainmask = { 158 .read = read_file_rx_chainmask, 159 .write = write_file_rx_chainmask, 160 .open = ath9k_debugfs_open, 161 .owner = THIS_MODULE 162}; 163 164 165static ssize_t read_file_dma(struct file *file, char __user *user_buf, 166 size_t count, loff_t *ppos) 167{ 168 struct ath_softc *sc = file->private_data; 169 struct ath_hw *ah = sc->sc_ah; 170 char *buf; 171 int retval; 172 unsigned int len = 0; 173 u32 val[ATH9K_NUM_DMA_DEBUG_REGS]; 174 int i, qcuOffset = 0, dcuOffset = 0; 175 u32 *qcuBase = &val[0], *dcuBase = &val[4]; 176 177 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL); 178 if (!buf) 179 return -ENOMEM; 180 181 ath9k_ps_wakeup(sc); 182 183 REG_WRITE_D(ah, AR_MACMISC, 184 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) | 185 (AR_MACMISC_MISC_OBS_BUS_1 << 186 AR_MACMISC_MISC_OBS_BUS_MSB_S))); 187 188 len += snprintf(buf + len, DMA_BUF_LEN - len, 189 "Raw DMA Debug values:\n"); 190 191 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) { 192 if (i % 4 == 0) 193 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 194 195 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32))); 196 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ", 197 i, val[i]); 198 } 199 200 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n"); 201 len += snprintf(buf + len, DMA_BUF_LEN - len, 202 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n"); 203 204 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) { 205 if (i == 8) { 206 qcuOffset = 0; 207 qcuBase++; 208 } 209 210 if (i == 6) { 211 dcuOffset = 0; 212 dcuBase++; 213 } 214 215 len += snprintf(buf + len, DMA_BUF_LEN - len, 216 "%2d %2x %1x %2x %2x\n", 217 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, 218 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), 219 val[2] & (0x7 << (i * 3)) >> (i * 3), 220 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); 221 } 222 223 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 224 225 len += snprintf(buf + len, DMA_BUF_LEN - len, 226 "qcu_stitch state: %2x qcu_fetch state: %2x\n", 227 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22); 228 len += snprintf(buf + len, DMA_BUF_LEN - len, 229 "qcu_complete state: %2x dcu_complete state: %2x\n", 230 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3)); 231 len += snprintf(buf + len, DMA_BUF_LEN - len, 232 "dcu_arb state: %2x dcu_fp state: %2x\n", 233 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27); 234 len += snprintf(buf + len, DMA_BUF_LEN - len, 235 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n", 236 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10); 237 len += snprintf(buf + len, DMA_BUF_LEN - len, 238 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n", 239 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12); 240 len += snprintf(buf + len, DMA_BUF_LEN - len, 241 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n", 242 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17); 243 244 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n", 245 REG_READ_D(ah, AR_OBS_BUS_1)); 246 len += snprintf(buf + len, DMA_BUF_LEN - len, 247 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR)); 248 249 ath9k_ps_restore(sc); 250 251 if (len > DMA_BUF_LEN) 252 len = DMA_BUF_LEN; 253 254 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 255 kfree(buf); 256 return retval; 257} 258 259static const struct file_operations fops_dma = { 260 .read = read_file_dma, 261 .open = ath9k_debugfs_open, 262 .owner = THIS_MODULE 263}; 264 265 266void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status) 267{ 268 if (status) 269 sc->debug.stats.istats.total++; 270 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 271 if (status & ATH9K_INT_RXLP) 272 sc->debug.stats.istats.rxlp++; 273 if (status & ATH9K_INT_RXHP) 274 sc->debug.stats.istats.rxhp++; 275 if (status & ATH9K_INT_BB_WATCHDOG) 276 sc->debug.stats.istats.bb_watchdog++; 277 } else { 278 if (status & ATH9K_INT_RX) 279 sc->debug.stats.istats.rxok++; 280 } 281 if (status & ATH9K_INT_RXEOL) 282 sc->debug.stats.istats.rxeol++; 283 if (status & ATH9K_INT_RXORN) 284 sc->debug.stats.istats.rxorn++; 285 if (status & ATH9K_INT_TX) 286 sc->debug.stats.istats.txok++; 287 if (status & ATH9K_INT_TXURN) 288 sc->debug.stats.istats.txurn++; 289 if (status & ATH9K_INT_MIB) 290 sc->debug.stats.istats.mib++; 291 if (status & ATH9K_INT_RXPHY) 292 sc->debug.stats.istats.rxphyerr++; 293 if (status & ATH9K_INT_RXKCM) 294 sc->debug.stats.istats.rx_keycache_miss++; 295 if (status & ATH9K_INT_SWBA) 296 sc->debug.stats.istats.swba++; 297 if (status & ATH9K_INT_BMISS) 298 sc->debug.stats.istats.bmiss++; 299 if (status & ATH9K_INT_BNR) 300 sc->debug.stats.istats.bnr++; 301 if (status & ATH9K_INT_CST) 302 sc->debug.stats.istats.cst++; 303 if (status & ATH9K_INT_GTT) 304 sc->debug.stats.istats.gtt++; 305 if (status & ATH9K_INT_TIM) 306 sc->debug.stats.istats.tim++; 307 if (status & ATH9K_INT_CABEND) 308 sc->debug.stats.istats.cabend++; 309 if (status & ATH9K_INT_DTIMSYNC) 310 sc->debug.stats.istats.dtimsync++; 311 if (status & ATH9K_INT_DTIM) 312 sc->debug.stats.istats.dtim++; 313} 314 315static ssize_t read_file_interrupt(struct file *file, char __user *user_buf, 316 size_t count, loff_t *ppos) 317{ 318 struct ath_softc *sc = file->private_data; 319 char buf[512]; 320 unsigned int len = 0; 321 322 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 323 len += snprintf(buf + len, sizeof(buf) - len, 324 "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp); 325 len += snprintf(buf + len, sizeof(buf) - len, 326 "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp); 327 len += snprintf(buf + len, sizeof(buf) - len, 328 "%8s: %10u\n", "WATCHDOG", 329 sc->debug.stats.istats.bb_watchdog); 330 } else { 331 len += snprintf(buf + len, sizeof(buf) - len, 332 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok); 333 } 334 len += snprintf(buf + len, sizeof(buf) - len, 335 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol); 336 len += snprintf(buf + len, sizeof(buf) - len, 337 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn); 338 len += snprintf(buf + len, sizeof(buf) - len, 339 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok); 340 len += snprintf(buf + len, sizeof(buf) - len, 341 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn); 342 len += snprintf(buf + len, sizeof(buf) - len, 343 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib); 344 len += snprintf(buf + len, sizeof(buf) - len, 345 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr); 346 len += snprintf(buf + len, sizeof(buf) - len, 347 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss); 348 len += snprintf(buf + len, sizeof(buf) - len, 349 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba); 350 len += snprintf(buf + len, sizeof(buf) - len, 351 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss); 352 len += snprintf(buf + len, sizeof(buf) - len, 353 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr); 354 len += snprintf(buf + len, sizeof(buf) - len, 355 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst); 356 len += snprintf(buf + len, sizeof(buf) - len, 357 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt); 358 len += snprintf(buf + len, sizeof(buf) - len, 359 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim); 360 len += snprintf(buf + len, sizeof(buf) - len, 361 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend); 362 len += snprintf(buf + len, sizeof(buf) - len, 363 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync); 364 len += snprintf(buf + len, sizeof(buf) - len, 365 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim); 366 len += snprintf(buf + len, sizeof(buf) - len, 367 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total); 368 369 if (len > sizeof(buf)) 370 len = sizeof(buf); 371 372 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 373} 374 375static const struct file_operations fops_interrupt = { 376 .read = read_file_interrupt, 377 .open = ath9k_debugfs_open, 378 .owner = THIS_MODULE 379}; 380 381void ath_debug_stat_rc(struct ath_softc *sc, int final_rate) 382{ 383 struct ath_rc_stats *stats; 384 385 stats = &sc->debug.stats.rcstats[final_rate]; 386 stats->success++; 387} 388 389void ath_debug_stat_retries(struct ath_softc *sc, int rix, 390 int xretries, int retries, u8 per) 391{ 392 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix]; 393 394 stats->xretries += xretries; 395 stats->retries += retries; 396 stats->per = per; 397} 398 399static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, 400 size_t count, loff_t *ppos) 401{ 402 struct ath_softc *sc = file->private_data; 403 char *buf; 404 unsigned int len = 0, max; 405 int i = 0; 406 ssize_t retval; 407 408 if (sc->cur_rate_table == NULL) 409 return 0; 410 411 max = 80 + sc->cur_rate_table->rate_cnt * 1024 + 1; 412 buf = kmalloc(max, GFP_KERNEL); 413 if (buf == NULL) 414 return -ENOMEM; 415 416 len += sprintf(buf, "%6s %6s %6s " 417 "%10s %10s %10s %10s\n", 418 "HT", "MCS", "Rate", 419 "Success", "Retries", "XRetries", "PER"); 420 421 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) { 422 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps; 423 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i]; 424 char mcs[5]; 425 char htmode[5]; 426 int used_mcs = 0, used_htmode = 0; 427 428 if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) { 429 used_mcs = snprintf(mcs, 5, "%d", 430 sc->cur_rate_table->info[i].ratecode); 431 432 if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy)) 433 used_htmode = snprintf(htmode, 5, "HT40"); 434 else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy)) 435 used_htmode = snprintf(htmode, 5, "HT20"); 436 else 437 used_htmode = snprintf(htmode, 5, "????"); 438 } 439 440 mcs[used_mcs] = '\0'; 441 htmode[used_htmode] = '\0'; 442 443 len += snprintf(buf + len, max - len, 444 "%6s %6s %3u.%d: " 445 "%10u %10u %10u %10u\n", 446 htmode, 447 mcs, 448 ratekbps / 1000, 449 (ratekbps % 1000) / 100, 450 stats->success, 451 stats->retries, 452 stats->xretries, 453 stats->per); 454 } 455 456 if (len > max) 457 len = max; 458 459 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 460 kfree(buf); 461 return retval; 462} 463 464static const struct file_operations fops_rcstat = { 465 .read = read_file_rcstat, 466 .open = ath9k_debugfs_open, 467 .owner = THIS_MODULE 468}; 469 470static const char * ath_wiphy_state_str(enum ath_wiphy_state state) 471{ 472 switch (state) { 473 case ATH_WIPHY_INACTIVE: 474 return "INACTIVE"; 475 case ATH_WIPHY_ACTIVE: 476 return "ACTIVE"; 477 case ATH_WIPHY_PAUSING: 478 return "PAUSING"; 479 case ATH_WIPHY_PAUSED: 480 return "PAUSED"; 481 case ATH_WIPHY_SCAN: 482 return "SCAN"; 483 } 484 return "?"; 485} 486 487static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, 488 size_t count, loff_t *ppos) 489{ 490 struct ath_softc *sc = file->private_data; 491 char buf[512]; 492 unsigned int len = 0; 493 int i; 494 u8 addr[ETH_ALEN]; 495 496 len += snprintf(buf + len, sizeof(buf) - len, 497 "primary: %s (%s chan=%d ht=%d)\n", 498 wiphy_name(sc->pri_wiphy->hw->wiphy), 499 ath_wiphy_state_str(sc->pri_wiphy->state), 500 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); 501 for (i = 0; i < sc->num_sec_wiphy; i++) { 502 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 503 if (aphy == NULL) 504 continue; 505 len += snprintf(buf + len, sizeof(buf) - len, 506 "secondary: %s (%s chan=%d ht=%d)\n", 507 wiphy_name(aphy->hw->wiphy), 508 ath_wiphy_state_str(aphy->state), 509 aphy->chan_idx, aphy->chan_is_ht); 510 } 511 512 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); 513 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); 514 len += snprintf(buf + len, sizeof(buf) - len, 515 "addr: %pM\n", addr); 516 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); 517 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); 518 len += snprintf(buf + len, sizeof(buf) - len, 519 "addrmask: %pM\n", addr); 520 521 if (len > sizeof(buf)) 522 len = sizeof(buf); 523 524 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 525} 526 527static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) 528{ 529 int i; 530 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) 531 return sc->pri_wiphy; 532 for (i = 0; i < sc->num_sec_wiphy; i++) { 533 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 534 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) 535 return aphy; 536 } 537 return NULL; 538} 539 540static int del_wiphy(struct ath_softc *sc, const char *name) 541{ 542 struct ath_wiphy *aphy = get_wiphy(sc, name); 543 if (!aphy) 544 return -ENOENT; 545 return ath9k_wiphy_del(aphy); 546} 547 548static int pause_wiphy(struct ath_softc *sc, const char *name) 549{ 550 struct ath_wiphy *aphy = get_wiphy(sc, name); 551 if (!aphy) 552 return -ENOENT; 553 return ath9k_wiphy_pause(aphy); 554} 555 556static int unpause_wiphy(struct ath_softc *sc, const char *name) 557{ 558 struct ath_wiphy *aphy = get_wiphy(sc, name); 559 if (!aphy) 560 return -ENOENT; 561 return ath9k_wiphy_unpause(aphy); 562} 563 564static int select_wiphy(struct ath_softc *sc, const char *name) 565{ 566 struct ath_wiphy *aphy = get_wiphy(sc, name); 567 if (!aphy) 568 return -ENOENT; 569 return ath9k_wiphy_select(aphy); 570} 571 572static int schedule_wiphy(struct ath_softc *sc, const char *msec) 573{ 574 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); 575 return 0; 576} 577 578static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, 579 size_t count, loff_t *ppos) 580{ 581 struct ath_softc *sc = file->private_data; 582 char buf[50]; 583 size_t len; 584 585 len = min(count, sizeof(buf) - 1); 586 if (copy_from_user(buf, user_buf, len)) 587 return -EFAULT; 588 buf[len] = '\0'; 589 if (len > 0 && buf[len - 1] == '\n') 590 buf[len - 1] = '\0'; 591 592 if (strncmp(buf, "add", 3) == 0) { 593 int res = ath9k_wiphy_add(sc); 594 if (res < 0) 595 return res; 596 } else if (strncmp(buf, "del=", 4) == 0) { 597 int res = del_wiphy(sc, buf + 4); 598 if (res < 0) 599 return res; 600 } else if (strncmp(buf, "pause=", 6) == 0) { 601 int res = pause_wiphy(sc, buf + 6); 602 if (res < 0) 603 return res; 604 } else if (strncmp(buf, "unpause=", 8) == 0) { 605 int res = unpause_wiphy(sc, buf + 8); 606 if (res < 0) 607 return res; 608 } else if (strncmp(buf, "select=", 7) == 0) { 609 int res = select_wiphy(sc, buf + 7); 610 if (res < 0) 611 return res; 612 } else if (strncmp(buf, "schedule=", 9) == 0) { 613 int res = schedule_wiphy(sc, buf + 9); 614 if (res < 0) 615 return res; 616 } else 617 return -EOPNOTSUPP; 618 619 return count; 620} 621 622static const struct file_operations fops_wiphy = { 623 .read = read_file_wiphy, 624 .write = write_file_wiphy, 625 .open = ath9k_debugfs_open, 626 .owner = THIS_MODULE 627}; 628 629#define PR(str, elem) \ 630 do { \ 631 len += snprintf(buf + len, size - len, \ 632 "%s%13u%11u%10u%10u\n", str, \ 633 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BE]].elem, \ 634 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BK]].elem, \ 635 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VI]].elem, \ 636 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VO]].elem); \ 637} while(0) 638 639static ssize_t read_file_xmit(struct file *file, char __user *user_buf, 640 size_t count, loff_t *ppos) 641{ 642 struct ath_softc *sc = file->private_data; 643 char *buf; 644 unsigned int len = 0, size = 2048; 645 ssize_t retval = 0; 646 647 buf = kzalloc(size, GFP_KERNEL); 648 if (buf == NULL) 649 return -ENOMEM; 650 651 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO"); 652 653 PR("MPDUs Queued: ", queued); 654 PR("MPDUs Completed: ", completed); 655 PR("Aggregates: ", a_aggr); 656 PR("AMPDUs Queued: ", a_queued); 657 PR("AMPDUs Completed:", a_completed); 658 PR("AMPDUs Retried: ", a_retries); 659 PR("AMPDUs XRetried: ", a_xretries); 660 PR("FIFO Underrun: ", fifo_underrun); 661 PR("TXOP Exceeded: ", xtxop); 662 PR("TXTIMER Expiry: ", timer_exp); 663 PR("DESC CFG Error: ", desc_cfg_err); 664 PR("DATA Underrun: ", data_underrun); 665 PR("DELIM Underrun: ", delim_underrun); 666 667 if (len > size) 668 len = size; 669 670 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 671 kfree(buf); 672 673 return retval; 674} 675 676void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, 677 struct ath_buf *bf, struct ath_tx_status *ts) 678{ 679 if (bf_isampdu(bf)) { 680 if (bf_isxretried(bf)) 681 TX_STAT_INC(txq->axq_qnum, a_xretries); 682 else 683 TX_STAT_INC(txq->axq_qnum, a_completed); 684 } else { 685 TX_STAT_INC(txq->axq_qnum, completed); 686 } 687 688 if (ts->ts_status & ATH9K_TXERR_FIFO) 689 TX_STAT_INC(txq->axq_qnum, fifo_underrun); 690 if (ts->ts_status & ATH9K_TXERR_XTXOP) 691 TX_STAT_INC(txq->axq_qnum, xtxop); 692 if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED) 693 TX_STAT_INC(txq->axq_qnum, timer_exp); 694 if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR) 695 TX_STAT_INC(txq->axq_qnum, desc_cfg_err); 696 if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN) 697 TX_STAT_INC(txq->axq_qnum, data_underrun); 698 if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN) 699 TX_STAT_INC(txq->axq_qnum, delim_underrun); 700} 701 702static const struct file_operations fops_xmit = { 703 .read = read_file_xmit, 704 .open = ath9k_debugfs_open, 705 .owner = THIS_MODULE 706}; 707 708static ssize_t read_file_recv(struct file *file, char __user *user_buf, 709 size_t count, loff_t *ppos) 710{ 711#define PHY_ERR(s, p) \ 712 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \ 713 sc->debug.stats.rxstats.phy_err_stats[p]); 714 715 struct ath_softc *sc = file->private_data; 716 char *buf; 717 unsigned int len = 0, size = 1152; 718 ssize_t retval = 0; 719 720 buf = kzalloc(size, GFP_KERNEL); 721 if (buf == NULL) 722 return -ENOMEM; 723 724 len += snprintf(buf + len, size - len, 725 "%18s : %10u\n", "CRC ERR", 726 sc->debug.stats.rxstats.crc_err); 727 len += snprintf(buf + len, size - len, 728 "%18s : %10u\n", "DECRYPT CRC ERR", 729 sc->debug.stats.rxstats.decrypt_crc_err); 730 len += snprintf(buf + len, size - len, 731 "%18s : %10u\n", "PHY ERR", 732 sc->debug.stats.rxstats.phy_err); 733 len += snprintf(buf + len, size - len, 734 "%18s : %10u\n", "MIC ERR", 735 sc->debug.stats.rxstats.mic_err); 736 len += snprintf(buf + len, size - len, 737 "%18s : %10u\n", "PRE-DELIM CRC ERR", 738 sc->debug.stats.rxstats.pre_delim_crc_err); 739 len += snprintf(buf + len, size - len, 740 "%18s : %10u\n", "POST-DELIM CRC ERR", 741 sc->debug.stats.rxstats.post_delim_crc_err); 742 len += snprintf(buf + len, size - len, 743 "%18s : %10u\n", "DECRYPT BUSY ERR", 744 sc->debug.stats.rxstats.decrypt_busy_err); 745 746 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN); 747 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING); 748 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY); 749 PHY_ERR("RATE", ATH9K_PHYERR_RATE); 750 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH); 751 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR); 752 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE); 753 PHY_ERR("TOR", ATH9K_PHYERR_TOR); 754 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING); 755 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); 756 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); 757 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); 758 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP); 759 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE); 760 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART); 761 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT); 762 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING); 763 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC); 764 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL); 765 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE); 766 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART); 767 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); 768 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP); 769 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR); 770 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); 771 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); 772 773 if (len > size) 774 len = size; 775 776 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 777 kfree(buf); 778 779 return retval; 780 781#undef PHY_ERR 782} 783 784void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs) 785{ 786#define RX_STAT_INC(c) sc->debug.stats.rxstats.c++ 787#define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++ 788 789 u32 phyerr; 790 791 if (rs->rs_status & ATH9K_RXERR_CRC) 792 RX_STAT_INC(crc_err); 793 if (rs->rs_status & ATH9K_RXERR_DECRYPT) 794 RX_STAT_INC(decrypt_crc_err); 795 if (rs->rs_status & ATH9K_RXERR_MIC) 796 RX_STAT_INC(mic_err); 797 if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE) 798 RX_STAT_INC(pre_delim_crc_err); 799 if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST) 800 RX_STAT_INC(post_delim_crc_err); 801 if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY) 802 RX_STAT_INC(decrypt_busy_err); 803 804 if (rs->rs_status & ATH9K_RXERR_PHY) { 805 RX_STAT_INC(phy_err); 806 phyerr = rs->rs_phyerr & 0x24; 807 RX_PHY_ERR_INC(phyerr); 808 } 809 810#undef RX_STAT_INC 811#undef RX_PHY_ERR_INC 812} 813 814static const struct file_operations fops_recv = { 815 .read = read_file_recv, 816 .open = ath9k_debugfs_open, 817 .owner = THIS_MODULE 818}; 819 820static ssize_t read_file_regidx(struct file *file, char __user *user_buf, 821 size_t count, loff_t *ppos) 822{ 823 struct ath_softc *sc = file->private_data; 824 char buf[32]; 825 unsigned int len; 826 827 len = sprintf(buf, "0x%08x\n", sc->debug.regidx); 828 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 829} 830 831static ssize_t write_file_regidx(struct file *file, const char __user *user_buf, 832 size_t count, loff_t *ppos) 833{ 834 struct ath_softc *sc = file->private_data; 835 unsigned long regidx; 836 char buf[32]; 837 ssize_t len; 838 839 len = min(count, sizeof(buf) - 1); 840 if (copy_from_user(buf, user_buf, len)) 841 return -EFAULT; 842 843 buf[len] = '\0'; 844 if (strict_strtoul(buf, 0, ®idx)) 845 return -EINVAL; 846 847 sc->debug.regidx = regidx; 848 return count; 849} 850 851static const struct file_operations fops_regidx = { 852 .read = read_file_regidx, 853 .write = write_file_regidx, 854 .open = ath9k_debugfs_open, 855 .owner = THIS_MODULE 856}; 857 858static ssize_t read_file_regval(struct file *file, char __user *user_buf, 859 size_t count, loff_t *ppos) 860{ 861 struct ath_softc *sc = file->private_data; 862 struct ath_hw *ah = sc->sc_ah; 863 char buf[32]; 864 unsigned int len; 865 u32 regval; 866 867 regval = REG_READ_D(ah, sc->debug.regidx); 868 len = sprintf(buf, "0x%08x\n", regval); 869 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 870} 871 872static ssize_t write_file_regval(struct file *file, const char __user *user_buf, 873 size_t count, loff_t *ppos) 874{ 875 struct ath_softc *sc = file->private_data; 876 struct ath_hw *ah = sc->sc_ah; 877 unsigned long regval; 878 char buf[32]; 879 ssize_t len; 880 881 len = min(count, sizeof(buf) - 1); 882 if (copy_from_user(buf, user_buf, len)) 883 return -EFAULT; 884 885 buf[len] = '\0'; 886 if (strict_strtoul(buf, 0, ®val)) 887 return -EINVAL; 888 889 REG_WRITE_D(ah, sc->debug.regidx, regval); 890 return count; 891} 892 893static const struct file_operations fops_regval = { 894 .read = read_file_regval, 895 .write = write_file_regval, 896 .open = ath9k_debugfs_open, 897 .owner = THIS_MODULE 898}; 899 900int ath9k_init_debug(struct ath_hw *ah) 901{ 902 struct ath_common *common = ath9k_hw_common(ah); 903 struct ath_softc *sc = (struct ath_softc *) common->priv; 904 905 if (!ath9k_debugfs_root) 906 return -ENOENT; 907 908 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy), 909 ath9k_debugfs_root); 910 if (!sc->debug.debugfs_phy) 911 return -ENOMEM; 912 913#ifdef CONFIG_ATH_DEBUG 914 if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR, 915 sc->debug.debugfs_phy, sc, &fops_debug)) 916 goto err; 917#endif 918 919 if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, 920 sc, &fops_dma)) 921 goto err; 922 923 if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, 924 sc, &fops_interrupt)) 925 goto err; 926 927 if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy, 928 sc, &fops_rcstat)) 929 goto err; 930 931 if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, 932 sc->debug.debugfs_phy, sc, &fops_wiphy)) 933 goto err; 934 935 if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, 936 sc, &fops_xmit)) 937 goto err; 938 939 if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy, 940 sc, &fops_recv)) 941 goto err; 942 943 if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR, 944 sc->debug.debugfs_phy, sc, &fops_rx_chainmask)) 945 goto err; 946 947 if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR, 948 sc->debug.debugfs_phy, sc, &fops_tx_chainmask)) 949 goto err; 950 951 if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR, 952 sc->debug.debugfs_phy, sc, &fops_regidx)) 953 goto err; 954 955 if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR, 956 sc->debug.debugfs_phy, sc, &fops_regval)) 957 goto err; 958 959 if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR, 960 sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca)) 961 goto err; 962 963 sc->debug.regidx = 0; 964 return 0; 965err: 966 ath9k_exit_debug(ah); 967 return -ENOMEM; 968} 969 970void ath9k_exit_debug(struct ath_hw *ah) 971{ 972 struct ath_common *common = ath9k_hw_common(ah); 973 struct ath_softc *sc = (struct ath_softc *) common->priv; 974 975 debugfs_remove_recursive(sc->debug.debugfs_phy); 976} 977 978int ath9k_debug_create_root(void) 979{ 980 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); 981 if (!ath9k_debugfs_root) 982 return -ENOENT; 983 984 return 0; 985} 986 987void ath9k_debug_remove_root(void) 988{ 989 debugfs_remove(ath9k_debugfs_root); 990 ath9k_debugfs_root = NULL; 991} 992