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 27 static struct dentry *ath9k_debugfs_root; 28 29 static 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 37 static 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 = snprintf(buf, sizeof(buf), "0x%08x\n", common->debug_mask); 46 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 47 } 48 49 static 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 -EINVAL; 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 70 static 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 81 static ssize_t read_file_dma(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_hw *ah = sc->sc_ah; 86 char *buf; 87 int retval; 88 unsigned int len = 0; 89 u32 val[ATH9K_NUM_DMA_DEBUG_REGS]; 90 int i, qcuOffset = 0, dcuOffset = 0; 91 u32 *qcuBase = &val[0], *dcuBase = &val[4]; 92 93 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL); 94 if (!buf) 95 return 0; 96 97 ath9k_ps_wakeup(sc); 98 99 REG_WRITE_D(ah, AR_MACMISC, 100 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) | 101 (AR_MACMISC_MISC_OBS_BUS_1 << 102 AR_MACMISC_MISC_OBS_BUS_MSB_S))); 103 104 len += snprintf(buf + len, DMA_BUF_LEN - len, 105 "Raw DMA Debug values:\n"); 106 107 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) { 108 if (i % 4 == 0) 109 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 110 111 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32))); 112 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ", 113 i, val[i]); 114 } 115 116 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n"); 117 len += snprintf(buf + len, DMA_BUF_LEN - len, 118 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n"); 119 120 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) { 121 if (i == 8) { 122 qcuOffset = 0; 123 qcuBase++; 124 } 125 126 if (i == 6) { 127 dcuOffset = 0; 128 dcuBase++; 129 } 130 131 len += snprintf(buf + len, DMA_BUF_LEN - len, 132 "%2d %2x %1x %2x %2x\n", 133 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, 134 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), 135 val[2] & (0x7 << (i * 3)) >> (i * 3), 136 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); 137 } 138 139 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 140 141 len += snprintf(buf + len, DMA_BUF_LEN - len, 142 "qcu_stitch state: %2x qcu_fetch state: %2x\n", 143 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22); 144 len += snprintf(buf + len, DMA_BUF_LEN - len, 145 "qcu_complete state: %2x dcu_complete state: %2x\n", 146 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3)); 147 len += snprintf(buf + len, DMA_BUF_LEN - len, 148 "dcu_arb state: %2x dcu_fp state: %2x\n", 149 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27); 150 len += snprintf(buf + len, DMA_BUF_LEN - len, 151 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n", 152 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10); 153 len += snprintf(buf + len, DMA_BUF_LEN - len, 154 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n", 155 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12); 156 len += snprintf(buf + len, DMA_BUF_LEN - len, 157 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n", 158 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17); 159 160 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x \n", 161 REG_READ_D(ah, AR_OBS_BUS_1)); 162 len += snprintf(buf + len, DMA_BUF_LEN - len, 163 "AR_CR: 0x%x \n", REG_READ_D(ah, AR_CR)); 164 165 ath9k_ps_restore(sc); 166 167 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 168 kfree(buf); 169 return retval; 170 } 171 172 static const struct file_operations fops_dma = { 173 .read = read_file_dma, 174 .open = ath9k_debugfs_open, 175 .owner = THIS_MODULE 176 }; 177 178 179 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status) 180 { 181 if (status) 182 sc->debug.stats.istats.total++; 183 if (status & ATH9K_INT_RX) 184 sc->debug.stats.istats.rxok++; 185 if (status & ATH9K_INT_RXEOL) 186 sc->debug.stats.istats.rxeol++; 187 if (status & ATH9K_INT_RXORN) 188 sc->debug.stats.istats.rxorn++; 189 if (status & ATH9K_INT_TX) 190 sc->debug.stats.istats.txok++; 191 if (status & ATH9K_INT_TXURN) 192 sc->debug.stats.istats.txurn++; 193 if (status & ATH9K_INT_MIB) 194 sc->debug.stats.istats.mib++; 195 if (status & ATH9K_INT_RXPHY) 196 sc->debug.stats.istats.rxphyerr++; 197 if (status & ATH9K_INT_RXKCM) 198 sc->debug.stats.istats.rx_keycache_miss++; 199 if (status & ATH9K_INT_SWBA) 200 sc->debug.stats.istats.swba++; 201 if (status & ATH9K_INT_BMISS) 202 sc->debug.stats.istats.bmiss++; 203 if (status & ATH9K_INT_BNR) 204 sc->debug.stats.istats.bnr++; 205 if (status & ATH9K_INT_CST) 206 sc->debug.stats.istats.cst++; 207 if (status & ATH9K_INT_GTT) 208 sc->debug.stats.istats.gtt++; 209 if (status & ATH9K_INT_TIM) 210 sc->debug.stats.istats.tim++; 211 if (status & ATH9K_INT_CABEND) 212 sc->debug.stats.istats.cabend++; 213 if (status & ATH9K_INT_DTIMSYNC) 214 sc->debug.stats.istats.dtimsync++; 215 if (status & ATH9K_INT_DTIM) 216 sc->debug.stats.istats.dtim++; 217 } 218 219 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf, 220 size_t count, loff_t *ppos) 221 { 222 struct ath_softc *sc = file->private_data; 223 char buf[512]; 224 unsigned int len = 0; 225 226 len += snprintf(buf + len, sizeof(buf) - len, 227 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok); 228 len += snprintf(buf + len, sizeof(buf) - len, 229 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol); 230 len += snprintf(buf + len, sizeof(buf) - len, 231 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn); 232 len += snprintf(buf + len, sizeof(buf) - len, 233 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok); 234 len += snprintf(buf + len, sizeof(buf) - len, 235 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn); 236 len += snprintf(buf + len, sizeof(buf) - len, 237 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib); 238 len += snprintf(buf + len, sizeof(buf) - len, 239 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr); 240 len += snprintf(buf + len, sizeof(buf) - len, 241 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss); 242 len += snprintf(buf + len, sizeof(buf) - len, 243 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba); 244 len += snprintf(buf + len, sizeof(buf) - len, 245 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss); 246 len += snprintf(buf + len, sizeof(buf) - len, 247 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr); 248 len += snprintf(buf + len, sizeof(buf) - len, 249 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst); 250 len += snprintf(buf + len, sizeof(buf) - len, 251 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt); 252 len += snprintf(buf + len, sizeof(buf) - len, 253 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim); 254 len += snprintf(buf + len, sizeof(buf) - len, 255 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend); 256 len += snprintf(buf + len, sizeof(buf) - len, 257 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync); 258 len += snprintf(buf + len, sizeof(buf) - len, 259 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim); 260 len += snprintf(buf + len, sizeof(buf) - len, 261 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total); 262 263 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 264 } 265 266 static const struct file_operations fops_interrupt = { 267 .read = read_file_interrupt, 268 .open = ath9k_debugfs_open, 269 .owner = THIS_MODULE 270 }; 271 272 void ath_debug_stat_rc(struct ath_softc *sc, int final_rate) 273 { 274 struct ath_rc_stats *stats; 275 276 stats = &sc->debug.stats.rcstats[final_rate]; 277 stats->success++; 278 } 279 280 void ath_debug_stat_retries(struct ath_softc *sc, int rix, 281 int xretries, int retries, u8 per) 282 { 283 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix]; 284 285 stats->xretries += xretries; 286 stats->retries += retries; 287 stats->per = per; 288 } 289 290 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, 291 size_t count, loff_t *ppos) 292 { 293 struct ath_softc *sc = file->private_data; 294 char *buf; 295 unsigned int len = 0, max; 296 int i = 0; 297 ssize_t retval; 298 299 if (sc->cur_rate_table == NULL) 300 return 0; 301 302 max = 80 + sc->cur_rate_table->rate_cnt * 1024; 303 buf = kmalloc(max + 1, GFP_KERNEL); 304 if (buf == NULL) 305 return 0; 306 buf[max] = 0; 307 308 len += sprintf(buf, "%6s %6s %6s " 309 "%10s %10s %10s %10s\n", 310 "HT", "MCS", "Rate", 311 "Success", "Retries", "XRetries", "PER"); 312 313 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) { 314 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps; 315 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i]; 316 char mcs[5]; 317 char htmode[5]; 318 int used_mcs = 0, used_htmode = 0; 319 320 if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) { 321 used_mcs = snprintf(mcs, 5, "%d", 322 sc->cur_rate_table->info[i].ratecode); 323 324 if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy)) 325 used_htmode = snprintf(htmode, 5, "HT40"); 326 else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy)) 327 used_htmode = snprintf(htmode, 5, "HT20"); 328 else 329 used_htmode = snprintf(htmode, 5, "????"); 330 } 331 332 mcs[used_mcs] = '\0'; 333 htmode[used_htmode] = '\0'; 334 335 len += snprintf(buf + len, max - len, 336 "%6s %6s %3u.%d: " 337 "%10u %10u %10u %10u\n", 338 htmode, 339 mcs, 340 ratekbps / 1000, 341 (ratekbps % 1000) / 100, 342 stats->success, 343 stats->retries, 344 stats->xretries, 345 stats->per); 346 } 347 348 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 349 kfree(buf); 350 return retval; 351 } 352 353 static const struct file_operations fops_rcstat = { 354 .read = read_file_rcstat, 355 .open = ath9k_debugfs_open, 356 .owner = THIS_MODULE 357 }; 358 359 static const char * ath_wiphy_state_str(enum ath_wiphy_state state) 360 { 361 switch (state) { 362 case ATH_WIPHY_INACTIVE: 363 return "INACTIVE"; 364 case ATH_WIPHY_ACTIVE: 365 return "ACTIVE"; 366 case ATH_WIPHY_PAUSING: 367 return "PAUSING"; 368 case ATH_WIPHY_PAUSED: 369 return "PAUSED"; 370 case ATH_WIPHY_SCAN: 371 return "SCAN"; 372 } 373 return "?"; 374 } 375 376 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, 377 size_t count, loff_t *ppos) 378 { 379 struct ath_softc *sc = file->private_data; 380 char buf[512]; 381 unsigned int len = 0; 382 int i; 383 u8 addr[ETH_ALEN]; 384 385 len += snprintf(buf + len, sizeof(buf) - len, 386 "primary: %s (%s chan=%d ht=%d)\n", 387 wiphy_name(sc->pri_wiphy->hw->wiphy), 388 ath_wiphy_state_str(sc->pri_wiphy->state), 389 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); 390 for (i = 0; i < sc->num_sec_wiphy; i++) { 391 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 392 if (aphy == NULL) 393 continue; 394 len += snprintf(buf + len, sizeof(buf) - len, 395 "secondary: %s (%s chan=%d ht=%d)\n", 396 wiphy_name(aphy->hw->wiphy), 397 ath_wiphy_state_str(aphy->state), 398 aphy->chan_idx, aphy->chan_is_ht); 399 } 400 401 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); 402 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); 403 len += snprintf(buf + len, sizeof(buf) - len, 404 "addr: %pM\n", addr); 405 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); 406 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); 407 len += snprintf(buf + len, sizeof(buf) - len, 408 "addrmask: %pM\n", addr); 409 410 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 411 } 412 413 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) 414 { 415 int i; 416 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) 417 return sc->pri_wiphy; 418 for (i = 0; i < sc->num_sec_wiphy; i++) { 419 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 420 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) 421 return aphy; 422 } 423 return NULL; 424 } 425 426 static int del_wiphy(struct ath_softc *sc, const char *name) 427 { 428 struct ath_wiphy *aphy = get_wiphy(sc, name); 429 if (!aphy) 430 return -ENOENT; 431 return ath9k_wiphy_del(aphy); 432 } 433 434 static int pause_wiphy(struct ath_softc *sc, const char *name) 435 { 436 struct ath_wiphy *aphy = get_wiphy(sc, name); 437 if (!aphy) 438 return -ENOENT; 439 return ath9k_wiphy_pause(aphy); 440 } 441 442 static int unpause_wiphy(struct ath_softc *sc, const char *name) 443 { 444 struct ath_wiphy *aphy = get_wiphy(sc, name); 445 if (!aphy) 446 return -ENOENT; 447 return ath9k_wiphy_unpause(aphy); 448 } 449 450 static int select_wiphy(struct ath_softc *sc, const char *name) 451 { 452 struct ath_wiphy *aphy = get_wiphy(sc, name); 453 if (!aphy) 454 return -ENOENT; 455 return ath9k_wiphy_select(aphy); 456 } 457 458 static int schedule_wiphy(struct ath_softc *sc, const char *msec) 459 { 460 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); 461 return 0; 462 } 463 464 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, 465 size_t count, loff_t *ppos) 466 { 467 struct ath_softc *sc = file->private_data; 468 char buf[50]; 469 size_t len; 470 471 len = min(count, sizeof(buf) - 1); 472 if (copy_from_user(buf, user_buf, len)) 473 return -EFAULT; 474 buf[len] = '\0'; 475 if (len > 0 && buf[len - 1] == '\n') 476 buf[len - 1] = '\0'; 477 478 if (strncmp(buf, "add", 3) == 0) { 479 int res = ath9k_wiphy_add(sc); 480 if (res < 0) 481 return res; 482 } else if (strncmp(buf, "del=", 4) == 0) { 483 int res = del_wiphy(sc, buf + 4); 484 if (res < 0) 485 return res; 486 } else if (strncmp(buf, "pause=", 6) == 0) { 487 int res = pause_wiphy(sc, buf + 6); 488 if (res < 0) 489 return res; 490 } else if (strncmp(buf, "unpause=", 8) == 0) { 491 int res = unpause_wiphy(sc, buf + 8); 492 if (res < 0) 493 return res; 494 } else if (strncmp(buf, "select=", 7) == 0) { 495 int res = select_wiphy(sc, buf + 7); 496 if (res < 0) 497 return res; 498 } else if (strncmp(buf, "schedule=", 9) == 0) { 499 int res = schedule_wiphy(sc, buf + 9); 500 if (res < 0) 501 return res; 502 } else 503 return -EOPNOTSUPP; 504 505 return count; 506 } 507 508 static const struct file_operations fops_wiphy = { 509 .read = read_file_wiphy, 510 .write = write_file_wiphy, 511 .open = ath9k_debugfs_open, 512 .owner = THIS_MODULE 513 }; 514 515 #define PR(str, elem) \ 516 do { \ 517 len += snprintf(buf + len, size - len, \ 518 "%s%13u%11u%10u%10u\n", str, \ 519 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \ 520 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \ 521 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \ 522 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \ 523 } while(0) 524 525 static ssize_t read_file_xmit(struct file *file, char __user *user_buf, 526 size_t count, loff_t *ppos) 527 { 528 struct ath_softc *sc = file->private_data; 529 char *buf; 530 unsigned int len = 0, size = 2048; 531 ssize_t retval = 0; 532 533 buf = kzalloc(size, GFP_KERNEL); 534 if (buf == NULL) 535 return 0; 536 537 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO"); 538 539 PR("MPDUs Queued: ", queued); 540 PR("MPDUs Completed: ", completed); 541 PR("Aggregates: ", a_aggr); 542 PR("AMPDUs Queued: ", a_queued); 543 PR("AMPDUs Completed:", a_completed); 544 PR("AMPDUs Retried: ", a_retries); 545 PR("AMPDUs XRetried: ", a_xretries); 546 PR("FIFO Underrun: ", fifo_underrun); 547 PR("TXOP Exceeded: ", xtxop); 548 PR("TXTIMER Expiry: ", timer_exp); 549 PR("DESC CFG Error: ", desc_cfg_err); 550 PR("DATA Underrun: ", data_underrun); 551 PR("DELIM Underrun: ", delim_underrun); 552 553 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 554 kfree(buf); 555 556 return retval; 557 } 558 559 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, 560 struct ath_buf *bf) 561 { 562 struct ath_desc *ds = bf->bf_desc; 563 564 if (bf_isampdu(bf)) { 565 if (bf_isxretried(bf)) 566 TX_STAT_INC(txq->axq_qnum, a_xretries); 567 else 568 TX_STAT_INC(txq->axq_qnum, a_completed); 569 } else { 570 TX_STAT_INC(txq->axq_qnum, completed); 571 } 572 573 if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO) 574 TX_STAT_INC(txq->axq_qnum, fifo_underrun); 575 if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP) 576 TX_STAT_INC(txq->axq_qnum, xtxop); 577 if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED) 578 TX_STAT_INC(txq->axq_qnum, timer_exp); 579 if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR) 580 TX_STAT_INC(txq->axq_qnum, desc_cfg_err); 581 if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN) 582 TX_STAT_INC(txq->axq_qnum, data_underrun); 583 if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN) 584 TX_STAT_INC(txq->axq_qnum, delim_underrun); 585 } 586 587 static const struct file_operations fops_xmit = { 588 .read = read_file_xmit, 589 .open = ath9k_debugfs_open, 590 .owner = THIS_MODULE 591 }; 592 593 static ssize_t read_file_recv(struct file *file, char __user *user_buf, 594 size_t count, loff_t *ppos) 595 { 596 #define PHY_ERR(s, p) \ 597 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \ 598 sc->debug.stats.rxstats.phy_err_stats[p]); 599 600 struct ath_softc *sc = file->private_data; 601 char *buf; 602 unsigned int len = 0, size = 1152; 603 ssize_t retval = 0; 604 605 buf = kzalloc(size, GFP_KERNEL); 606 if (buf == NULL) 607 return 0; 608 609 len += snprintf(buf + len, size - len, 610 "%18s : %10u\n", "CRC ERR", 611 sc->debug.stats.rxstats.crc_err); 612 len += snprintf(buf + len, size - len, 613 "%18s : %10u\n", "DECRYPT CRC ERR", 614 sc->debug.stats.rxstats.decrypt_crc_err); 615 len += snprintf(buf + len, size - len, 616 "%18s : %10u\n", "PHY ERR", 617 sc->debug.stats.rxstats.phy_err); 618 len += snprintf(buf + len, size - len, 619 "%18s : %10u\n", "MIC ERR", 620 sc->debug.stats.rxstats.mic_err); 621 len += snprintf(buf + len, size - len, 622 "%18s : %10u\n", "PRE-DELIM CRC ERR", 623 sc->debug.stats.rxstats.pre_delim_crc_err); 624 len += snprintf(buf + len, size - len, 625 "%18s : %10u\n", "POST-DELIM CRC ERR", 626 sc->debug.stats.rxstats.post_delim_crc_err); 627 len += snprintf(buf + len, size - len, 628 "%18s : %10u\n", "DECRYPT BUSY ERR", 629 sc->debug.stats.rxstats.decrypt_busy_err); 630 631 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN); 632 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING); 633 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY); 634 PHY_ERR("RATE", ATH9K_PHYERR_RATE); 635 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH); 636 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR); 637 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE); 638 PHY_ERR("TOR", ATH9K_PHYERR_TOR); 639 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING); 640 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); 641 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); 642 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); 643 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP); 644 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE); 645 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART); 646 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT); 647 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING); 648 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC); 649 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL); 650 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE); 651 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART); 652 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); 653 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP); 654 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR); 655 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); 656 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); 657 658 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 659 kfree(buf); 660 661 return retval; 662 663 #undef PHY_ERR 664 } 665 666 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf) 667 { 668 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++ 669 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++ 670 671 struct ath_desc *ds = bf->bf_desc; 672 u32 phyerr; 673 674 if (ds->ds_rxstat.rs_status & ATH9K_RXERR_CRC) 675 RX_STAT_INC(crc_err); 676 if (ds->ds_rxstat.rs_status & ATH9K_RXERR_DECRYPT) 677 RX_STAT_INC(decrypt_crc_err); 678 if (ds->ds_rxstat.rs_status & ATH9K_RXERR_MIC) 679 RX_STAT_INC(mic_err); 680 if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_PRE) 681 RX_STAT_INC(pre_delim_crc_err); 682 if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_POST) 683 RX_STAT_INC(post_delim_crc_err); 684 if (ds->ds_rxstat.rs_status & ATH9K_RX_DECRYPT_BUSY) 685 RX_STAT_INC(decrypt_busy_err); 686 687 if (ds->ds_rxstat.rs_status & ATH9K_RXERR_PHY) { 688 RX_STAT_INC(phy_err); 689 phyerr = ds->ds_rxstat.rs_phyerr & 0x24; 690 RX_PHY_ERR_INC(phyerr); 691 } 692 693 #undef RX_STAT_INC 694 #undef RX_PHY_ERR_INC 695 } 696 697 static const struct file_operations fops_recv = { 698 .read = read_file_recv, 699 .open = ath9k_debugfs_open, 700 .owner = THIS_MODULE 701 }; 702 703 int ath9k_init_debug(struct ath_hw *ah) 704 { 705 struct ath_common *common = ath9k_hw_common(ah); 706 struct ath_softc *sc = (struct ath_softc *) common->priv; 707 708 if (!ath9k_debugfs_root) 709 return -ENOENT; 710 711 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy), 712 ath9k_debugfs_root); 713 if (!sc->debug.debugfs_phy) 714 goto err; 715 716 #ifdef CONFIG_ATH_DEBUG 717 sc->debug.debugfs_debug = debugfs_create_file("debug", 718 S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug); 719 if (!sc->debug.debugfs_debug) 720 goto err; 721 #endif 722 723 sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR, 724 sc->debug.debugfs_phy, sc, &fops_dma); 725 if (!sc->debug.debugfs_dma) 726 goto err; 727 728 sc->debug.debugfs_interrupt = debugfs_create_file("interrupt", 729 S_IRUSR, 730 sc->debug.debugfs_phy, 731 sc, &fops_interrupt); 732 if (!sc->debug.debugfs_interrupt) 733 goto err; 734 735 sc->debug.debugfs_rcstat = debugfs_create_file("rcstat", 736 S_IRUSR, 737 sc->debug.debugfs_phy, 738 sc, &fops_rcstat); 739 if (!sc->debug.debugfs_rcstat) 740 goto err; 741 742 sc->debug.debugfs_wiphy = debugfs_create_file( 743 "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, 744 &fops_wiphy); 745 if (!sc->debug.debugfs_wiphy) 746 goto err; 747 748 sc->debug.debugfs_xmit = debugfs_create_file("xmit", 749 S_IRUSR, 750 sc->debug.debugfs_phy, 751 sc, &fops_xmit); 752 if (!sc->debug.debugfs_xmit) 753 goto err; 754 755 sc->debug.debugfs_recv = debugfs_create_file("recv", 756 S_IRUSR, 757 sc->debug.debugfs_phy, 758 sc, &fops_recv); 759 if (!sc->debug.debugfs_recv) 760 goto err; 761 762 return 0; 763 err: 764 ath9k_exit_debug(ah); 765 return -ENOMEM; 766 } 767 768 void ath9k_exit_debug(struct ath_hw *ah) 769 { 770 struct ath_common *common = ath9k_hw_common(ah); 771 struct ath_softc *sc = (struct ath_softc *) common->priv; 772 773 debugfs_remove(sc->debug.debugfs_recv); 774 debugfs_remove(sc->debug.debugfs_xmit); 775 debugfs_remove(sc->debug.debugfs_wiphy); 776 debugfs_remove(sc->debug.debugfs_rcstat); 777 debugfs_remove(sc->debug.debugfs_interrupt); 778 debugfs_remove(sc->debug.debugfs_dma); 779 debugfs_remove(sc->debug.debugfs_debug); 780 debugfs_remove(sc->debug.debugfs_phy); 781 } 782 783 int ath9k_debug_create_root(void) 784 { 785 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); 786 if (!ath9k_debugfs_root) 787 return -ENOENT; 788 789 return 0; 790 } 791 792 void ath9k_debug_remove_root(void) 793 { 794 debugfs_remove(ath9k_debugfs_root); 795 ath9k_debugfs_root = NULL; 796 } 797