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 = sprintf(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 -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 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 .llseek = default_llseek, 76 }; 77 78 #endif 79 80 #define DMA_BUF_LEN 1024 81 82 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf, 83 size_t count, loff_t *ppos) 84 { 85 struct ath_softc *sc = file->private_data; 86 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 87 char buf[32]; 88 unsigned int len; 89 90 len = sprintf(buf, "0x%08x\n", common->tx_chainmask); 91 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 92 } 93 94 static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf, 95 size_t count, loff_t *ppos) 96 { 97 struct ath_softc *sc = file->private_data; 98 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 99 unsigned long mask; 100 char buf[32]; 101 ssize_t len; 102 103 len = min(count, sizeof(buf) - 1); 104 if (copy_from_user(buf, user_buf, len)) 105 return -EFAULT; 106 107 buf[len] = '\0'; 108 if (strict_strtoul(buf, 0, &mask)) 109 return -EINVAL; 110 111 common->tx_chainmask = mask; 112 sc->sc_ah->caps.tx_chainmask = mask; 113 return count; 114 } 115 116 static const struct file_operations fops_tx_chainmask = { 117 .read = read_file_tx_chainmask, 118 .write = write_file_tx_chainmask, 119 .open = ath9k_debugfs_open, 120 .owner = THIS_MODULE, 121 .llseek = default_llseek, 122 }; 123 124 125 static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf, 126 size_t count, loff_t *ppos) 127 { 128 struct ath_softc *sc = file->private_data; 129 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 130 char buf[32]; 131 unsigned int len; 132 133 len = sprintf(buf, "0x%08x\n", common->rx_chainmask); 134 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 135 } 136 137 static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf, 138 size_t count, loff_t *ppos) 139 { 140 struct ath_softc *sc = file->private_data; 141 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 142 unsigned long mask; 143 char buf[32]; 144 ssize_t len; 145 146 len = min(count, sizeof(buf) - 1); 147 if (copy_from_user(buf, user_buf, len)) 148 return -EFAULT; 149 150 buf[len] = '\0'; 151 if (strict_strtoul(buf, 0, &mask)) 152 return -EINVAL; 153 154 common->rx_chainmask = mask; 155 sc->sc_ah->caps.rx_chainmask = mask; 156 return count; 157 } 158 159 static const struct file_operations fops_rx_chainmask = { 160 .read = read_file_rx_chainmask, 161 .write = write_file_rx_chainmask, 162 .open = ath9k_debugfs_open, 163 .owner = THIS_MODULE, 164 .llseek = default_llseek, 165 }; 166 167 168 static ssize_t read_file_dma(struct file *file, char __user *user_buf, 169 size_t count, loff_t *ppos) 170 { 171 struct ath_softc *sc = file->private_data; 172 struct ath_hw *ah = sc->sc_ah; 173 char *buf; 174 int retval; 175 unsigned int len = 0; 176 u32 val[ATH9K_NUM_DMA_DEBUG_REGS]; 177 int i, qcuOffset = 0, dcuOffset = 0; 178 u32 *qcuBase = &val[0], *dcuBase = &val[4]; 179 180 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL); 181 if (!buf) 182 return -ENOMEM; 183 184 ath9k_ps_wakeup(sc); 185 186 REG_WRITE_D(ah, AR_MACMISC, 187 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) | 188 (AR_MACMISC_MISC_OBS_BUS_1 << 189 AR_MACMISC_MISC_OBS_BUS_MSB_S))); 190 191 len += snprintf(buf + len, DMA_BUF_LEN - len, 192 "Raw DMA Debug values:\n"); 193 194 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) { 195 if (i % 4 == 0) 196 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 197 198 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32))); 199 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ", 200 i, val[i]); 201 } 202 203 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n"); 204 len += snprintf(buf + len, DMA_BUF_LEN - len, 205 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n"); 206 207 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) { 208 if (i == 8) { 209 qcuOffset = 0; 210 qcuBase++; 211 } 212 213 if (i == 6) { 214 dcuOffset = 0; 215 dcuBase++; 216 } 217 218 len += snprintf(buf + len, DMA_BUF_LEN - len, 219 "%2d %2x %1x %2x %2x\n", 220 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, 221 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), 222 val[2] & (0x7 << (i * 3)) >> (i * 3), 223 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); 224 } 225 226 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 227 228 len += snprintf(buf + len, DMA_BUF_LEN - len, 229 "qcu_stitch state: %2x qcu_fetch state: %2x\n", 230 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22); 231 len += snprintf(buf + len, DMA_BUF_LEN - len, 232 "qcu_complete state: %2x dcu_complete state: %2x\n", 233 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3)); 234 len += snprintf(buf + len, DMA_BUF_LEN - len, 235 "dcu_arb state: %2x dcu_fp state: %2x\n", 236 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27); 237 len += snprintf(buf + len, DMA_BUF_LEN - len, 238 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n", 239 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10); 240 len += snprintf(buf + len, DMA_BUF_LEN - len, 241 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n", 242 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12); 243 len += snprintf(buf + len, DMA_BUF_LEN - len, 244 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n", 245 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17); 246 247 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n", 248 REG_READ_D(ah, AR_OBS_BUS_1)); 249 len += snprintf(buf + len, DMA_BUF_LEN - len, 250 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR)); 251 252 ath9k_ps_restore(sc); 253 254 if (len > DMA_BUF_LEN) 255 len = DMA_BUF_LEN; 256 257 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 258 kfree(buf); 259 return retval; 260 } 261 262 static const struct file_operations fops_dma = { 263 .read = read_file_dma, 264 .open = ath9k_debugfs_open, 265 .owner = THIS_MODULE, 266 .llseek = default_llseek, 267 }; 268 269 270 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status) 271 { 272 if (status) 273 sc->debug.stats.istats.total++; 274 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 275 if (status & ATH9K_INT_RXLP) 276 sc->debug.stats.istats.rxlp++; 277 if (status & ATH9K_INT_RXHP) 278 sc->debug.stats.istats.rxhp++; 279 if (status & ATH9K_INT_BB_WATCHDOG) 280 sc->debug.stats.istats.bb_watchdog++; 281 } else { 282 if (status & ATH9K_INT_RX) 283 sc->debug.stats.istats.rxok++; 284 } 285 if (status & ATH9K_INT_RXEOL) 286 sc->debug.stats.istats.rxeol++; 287 if (status & ATH9K_INT_RXORN) 288 sc->debug.stats.istats.rxorn++; 289 if (status & ATH9K_INT_TX) 290 sc->debug.stats.istats.txok++; 291 if (status & ATH9K_INT_TXURN) 292 sc->debug.stats.istats.txurn++; 293 if (status & ATH9K_INT_MIB) 294 sc->debug.stats.istats.mib++; 295 if (status & ATH9K_INT_RXPHY) 296 sc->debug.stats.istats.rxphyerr++; 297 if (status & ATH9K_INT_RXKCM) 298 sc->debug.stats.istats.rx_keycache_miss++; 299 if (status & ATH9K_INT_SWBA) 300 sc->debug.stats.istats.swba++; 301 if (status & ATH9K_INT_BMISS) 302 sc->debug.stats.istats.bmiss++; 303 if (status & ATH9K_INT_BNR) 304 sc->debug.stats.istats.bnr++; 305 if (status & ATH9K_INT_CST) 306 sc->debug.stats.istats.cst++; 307 if (status & ATH9K_INT_GTT) 308 sc->debug.stats.istats.gtt++; 309 if (status & ATH9K_INT_TIM) 310 sc->debug.stats.istats.tim++; 311 if (status & ATH9K_INT_CABEND) 312 sc->debug.stats.istats.cabend++; 313 if (status & ATH9K_INT_DTIMSYNC) 314 sc->debug.stats.istats.dtimsync++; 315 if (status & ATH9K_INT_DTIM) 316 sc->debug.stats.istats.dtim++; 317 } 318 319 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf, 320 size_t count, loff_t *ppos) 321 { 322 struct ath_softc *sc = file->private_data; 323 char buf[512]; 324 unsigned int len = 0; 325 326 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 327 len += snprintf(buf + len, sizeof(buf) - len, 328 "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp); 329 len += snprintf(buf + len, sizeof(buf) - len, 330 "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp); 331 len += snprintf(buf + len, sizeof(buf) - len, 332 "%8s: %10u\n", "WATCHDOG", 333 sc->debug.stats.istats.bb_watchdog); 334 } else { 335 len += snprintf(buf + len, sizeof(buf) - len, 336 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok); 337 } 338 len += snprintf(buf + len, sizeof(buf) - len, 339 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol); 340 len += snprintf(buf + len, sizeof(buf) - len, 341 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn); 342 len += snprintf(buf + len, sizeof(buf) - len, 343 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok); 344 len += snprintf(buf + len, sizeof(buf) - len, 345 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn); 346 len += snprintf(buf + len, sizeof(buf) - len, 347 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib); 348 len += snprintf(buf + len, sizeof(buf) - len, 349 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr); 350 len += snprintf(buf + len, sizeof(buf) - len, 351 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss); 352 len += snprintf(buf + len, sizeof(buf) - len, 353 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba); 354 len += snprintf(buf + len, sizeof(buf) - len, 355 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss); 356 len += snprintf(buf + len, sizeof(buf) - len, 357 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr); 358 len += snprintf(buf + len, sizeof(buf) - len, 359 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst); 360 len += snprintf(buf + len, sizeof(buf) - len, 361 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt); 362 len += snprintf(buf + len, sizeof(buf) - len, 363 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim); 364 len += snprintf(buf + len, sizeof(buf) - len, 365 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend); 366 len += snprintf(buf + len, sizeof(buf) - len, 367 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync); 368 len += snprintf(buf + len, sizeof(buf) - len, 369 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim); 370 len += snprintf(buf + len, sizeof(buf) - len, 371 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total); 372 373 if (len > sizeof(buf)) 374 len = sizeof(buf); 375 376 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 377 } 378 379 static const struct file_operations fops_interrupt = { 380 .read = read_file_interrupt, 381 .open = ath9k_debugfs_open, 382 .owner = THIS_MODULE, 383 .llseek = default_llseek, 384 }; 385 386 static const char * ath_wiphy_state_str(enum ath_wiphy_state state) 387 { 388 switch (state) { 389 case ATH_WIPHY_INACTIVE: 390 return "INACTIVE"; 391 case ATH_WIPHY_ACTIVE: 392 return "ACTIVE"; 393 case ATH_WIPHY_PAUSING: 394 return "PAUSING"; 395 case ATH_WIPHY_PAUSED: 396 return "PAUSED"; 397 case ATH_WIPHY_SCAN: 398 return "SCAN"; 399 } 400 return "?"; 401 } 402 403 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, 404 size_t count, loff_t *ppos) 405 { 406 struct ath_softc *sc = file->private_data; 407 struct ath_wiphy *aphy = sc->pri_wiphy; 408 struct ieee80211_channel *chan = aphy->hw->conf.channel; 409 char buf[512]; 410 unsigned int len = 0; 411 int i; 412 u8 addr[ETH_ALEN]; 413 u32 tmp; 414 415 len += snprintf(buf + len, sizeof(buf) - len, 416 "primary: %s (%s chan=%d ht=%d)\n", 417 wiphy_name(sc->pri_wiphy->hw->wiphy), 418 ath_wiphy_state_str(sc->pri_wiphy->state), 419 ieee80211_frequency_to_channel(chan->center_freq), 420 aphy->chan_is_ht); 421 422 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); 423 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); 424 len += snprintf(buf + len, sizeof(buf) - len, 425 "addr: %pM\n", addr); 426 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); 427 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); 428 len += snprintf(buf + len, sizeof(buf) - len, 429 "addrmask: %pM\n", addr); 430 tmp = ath9k_hw_getrxfilter(sc->sc_ah); 431 len += snprintf(buf + len, sizeof(buf) - len, 432 "rfilt: 0x%x", tmp); 433 if (tmp & ATH9K_RX_FILTER_UCAST) 434 len += snprintf(buf + len, sizeof(buf) - len, " UCAST"); 435 if (tmp & ATH9K_RX_FILTER_MCAST) 436 len += snprintf(buf + len, sizeof(buf) - len, " MCAST"); 437 if (tmp & ATH9K_RX_FILTER_BCAST) 438 len += snprintf(buf + len, sizeof(buf) - len, " BCAST"); 439 if (tmp & ATH9K_RX_FILTER_CONTROL) 440 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL"); 441 if (tmp & ATH9K_RX_FILTER_BEACON) 442 len += snprintf(buf + len, sizeof(buf) - len, " BEACON"); 443 if (tmp & ATH9K_RX_FILTER_PROM) 444 len += snprintf(buf + len, sizeof(buf) - len, " PROM"); 445 if (tmp & ATH9K_RX_FILTER_PROBEREQ) 446 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ"); 447 if (tmp & ATH9K_RX_FILTER_PHYERR) 448 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR"); 449 if (tmp & ATH9K_RX_FILTER_MYBEACON) 450 len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON"); 451 if (tmp & ATH9K_RX_FILTER_COMP_BAR) 452 len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR"); 453 if (tmp & ATH9K_RX_FILTER_PSPOLL) 454 len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL"); 455 if (tmp & ATH9K_RX_FILTER_PHYRADAR) 456 len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR"); 457 if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL) 458 len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n"); 459 else 460 len += snprintf(buf + len, sizeof(buf) - len, "\n"); 461 462 /* Put variable-length stuff down here, and check for overflows. */ 463 for (i = 0; i < sc->num_sec_wiphy; i++) { 464 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 465 if (aphy == NULL) 466 continue; 467 chan = aphy->hw->conf.channel; 468 len += snprintf(buf + len, sizeof(buf) - len, 469 "secondary: %s (%s chan=%d ht=%d)\n", 470 wiphy_name(aphy->hw->wiphy), 471 ath_wiphy_state_str(aphy->state), 472 ieee80211_frequency_to_channel(chan->center_freq), 473 aphy->chan_is_ht); 474 } 475 if (len > sizeof(buf)) 476 len = sizeof(buf); 477 478 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 479 } 480 481 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) 482 { 483 int i; 484 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) 485 return sc->pri_wiphy; 486 for (i = 0; i < sc->num_sec_wiphy; i++) { 487 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 488 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) 489 return aphy; 490 } 491 return NULL; 492 } 493 494 static int del_wiphy(struct ath_softc *sc, const char *name) 495 { 496 struct ath_wiphy *aphy = get_wiphy(sc, name); 497 if (!aphy) 498 return -ENOENT; 499 return ath9k_wiphy_del(aphy); 500 } 501 502 static int pause_wiphy(struct ath_softc *sc, const char *name) 503 { 504 struct ath_wiphy *aphy = get_wiphy(sc, name); 505 if (!aphy) 506 return -ENOENT; 507 return ath9k_wiphy_pause(aphy); 508 } 509 510 static int unpause_wiphy(struct ath_softc *sc, const char *name) 511 { 512 struct ath_wiphy *aphy = get_wiphy(sc, name); 513 if (!aphy) 514 return -ENOENT; 515 return ath9k_wiphy_unpause(aphy); 516 } 517 518 static int select_wiphy(struct ath_softc *sc, const char *name) 519 { 520 struct ath_wiphy *aphy = get_wiphy(sc, name); 521 if (!aphy) 522 return -ENOENT; 523 return ath9k_wiphy_select(aphy); 524 } 525 526 static int schedule_wiphy(struct ath_softc *sc, const char *msec) 527 { 528 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); 529 return 0; 530 } 531 532 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, 533 size_t count, loff_t *ppos) 534 { 535 struct ath_softc *sc = file->private_data; 536 char buf[50]; 537 size_t len; 538 539 len = min(count, sizeof(buf) - 1); 540 if (copy_from_user(buf, user_buf, len)) 541 return -EFAULT; 542 buf[len] = '\0'; 543 if (len > 0 && buf[len - 1] == '\n') 544 buf[len - 1] = '\0'; 545 546 if (strncmp(buf, "add", 3) == 0) { 547 int res = ath9k_wiphy_add(sc); 548 if (res < 0) 549 return res; 550 } else if (strncmp(buf, "del=", 4) == 0) { 551 int res = del_wiphy(sc, buf + 4); 552 if (res < 0) 553 return res; 554 } else if (strncmp(buf, "pause=", 6) == 0) { 555 int res = pause_wiphy(sc, buf + 6); 556 if (res < 0) 557 return res; 558 } else if (strncmp(buf, "unpause=", 8) == 0) { 559 int res = unpause_wiphy(sc, buf + 8); 560 if (res < 0) 561 return res; 562 } else if (strncmp(buf, "select=", 7) == 0) { 563 int res = select_wiphy(sc, buf + 7); 564 if (res < 0) 565 return res; 566 } else if (strncmp(buf, "schedule=", 9) == 0) { 567 int res = schedule_wiphy(sc, buf + 9); 568 if (res < 0) 569 return res; 570 } else 571 return -EOPNOTSUPP; 572 573 return count; 574 } 575 576 static const struct file_operations fops_wiphy = { 577 .read = read_file_wiphy, 578 .write = write_file_wiphy, 579 .open = ath9k_debugfs_open, 580 .owner = THIS_MODULE, 581 .llseek = default_llseek, 582 }; 583 584 #define PR(str, elem) \ 585 do { \ 586 len += snprintf(buf + len, size - len, \ 587 "%s%13u%11u%10u%10u\n", str, \ 588 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BE]].elem, \ 589 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_BK]].elem, \ 590 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VI]].elem, \ 591 sc->debug.stats.txstats[sc->tx.hwq_map[WME_AC_VO]].elem); \ 592 } while(0) 593 594 static ssize_t read_file_xmit(struct file *file, char __user *user_buf, 595 size_t count, loff_t *ppos) 596 { 597 struct ath_softc *sc = file->private_data; 598 char *buf; 599 unsigned int len = 0, size = 2048; 600 ssize_t retval = 0; 601 602 buf = kzalloc(size, GFP_KERNEL); 603 if (buf == NULL) 604 return -ENOMEM; 605 606 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO"); 607 608 PR("MPDUs Queued: ", queued); 609 PR("MPDUs Completed: ", completed); 610 PR("Aggregates: ", a_aggr); 611 PR("AMPDUs Queued: ", a_queued); 612 PR("AMPDUs Completed:", a_completed); 613 PR("AMPDUs Retried: ", a_retries); 614 PR("AMPDUs XRetried: ", a_xretries); 615 PR("FIFO Underrun: ", fifo_underrun); 616 PR("TXOP Exceeded: ", xtxop); 617 PR("TXTIMER Expiry: ", timer_exp); 618 PR("DESC CFG Error: ", desc_cfg_err); 619 PR("DATA Underrun: ", data_underrun); 620 PR("DELIM Underrun: ", delim_underrun); 621 PR("TX-Pkts-All: ", tx_pkts_all); 622 PR("TX-Bytes-All: ", tx_bytes_all); 623 624 if (len > size) 625 len = size; 626 627 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 628 kfree(buf); 629 630 return retval; 631 } 632 633 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, 634 struct ath_buf *bf, struct ath_tx_status *ts) 635 { 636 TX_STAT_INC(txq->axq_qnum, tx_pkts_all); 637 sc->debug.stats.txstats[txq->axq_qnum].tx_bytes_all += bf->bf_mpdu->len; 638 639 if (bf_isampdu(bf)) { 640 if (bf_isxretried(bf)) 641 TX_STAT_INC(txq->axq_qnum, a_xretries); 642 else 643 TX_STAT_INC(txq->axq_qnum, a_completed); 644 } else { 645 TX_STAT_INC(txq->axq_qnum, completed); 646 } 647 648 if (ts->ts_status & ATH9K_TXERR_FIFO) 649 TX_STAT_INC(txq->axq_qnum, fifo_underrun); 650 if (ts->ts_status & ATH9K_TXERR_XTXOP) 651 TX_STAT_INC(txq->axq_qnum, xtxop); 652 if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED) 653 TX_STAT_INC(txq->axq_qnum, timer_exp); 654 if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR) 655 TX_STAT_INC(txq->axq_qnum, desc_cfg_err); 656 if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN) 657 TX_STAT_INC(txq->axq_qnum, data_underrun); 658 if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN) 659 TX_STAT_INC(txq->axq_qnum, delim_underrun); 660 } 661 662 static const struct file_operations fops_xmit = { 663 .read = read_file_xmit, 664 .open = ath9k_debugfs_open, 665 .owner = THIS_MODULE, 666 .llseek = default_llseek, 667 }; 668 669 static ssize_t read_file_recv(struct file *file, char __user *user_buf, 670 size_t count, loff_t *ppos) 671 { 672 #define PHY_ERR(s, p) \ 673 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \ 674 sc->debug.stats.rxstats.phy_err_stats[p]); 675 676 struct ath_softc *sc = file->private_data; 677 char *buf; 678 unsigned int len = 0, size = 1152; 679 ssize_t retval = 0; 680 681 buf = kzalloc(size, GFP_KERNEL); 682 if (buf == NULL) 683 return -ENOMEM; 684 685 len += snprintf(buf + len, size - len, 686 "%18s : %10u\n", "CRC ERR", 687 sc->debug.stats.rxstats.crc_err); 688 len += snprintf(buf + len, size - len, 689 "%18s : %10u\n", "DECRYPT CRC ERR", 690 sc->debug.stats.rxstats.decrypt_crc_err); 691 len += snprintf(buf + len, size - len, 692 "%18s : %10u\n", "PHY ERR", 693 sc->debug.stats.rxstats.phy_err); 694 len += snprintf(buf + len, size - len, 695 "%18s : %10u\n", "MIC ERR", 696 sc->debug.stats.rxstats.mic_err); 697 len += snprintf(buf + len, size - len, 698 "%18s : %10u\n", "PRE-DELIM CRC ERR", 699 sc->debug.stats.rxstats.pre_delim_crc_err); 700 len += snprintf(buf + len, size - len, 701 "%18s : %10u\n", "POST-DELIM CRC ERR", 702 sc->debug.stats.rxstats.post_delim_crc_err); 703 len += snprintf(buf + len, size - len, 704 "%18s : %10u\n", "DECRYPT BUSY ERR", 705 sc->debug.stats.rxstats.decrypt_busy_err); 706 707 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN); 708 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING); 709 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY); 710 PHY_ERR("RATE", ATH9K_PHYERR_RATE); 711 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH); 712 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR); 713 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE); 714 PHY_ERR("TOR", ATH9K_PHYERR_TOR); 715 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING); 716 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); 717 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); 718 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); 719 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP); 720 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE); 721 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART); 722 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT); 723 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING); 724 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC); 725 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL); 726 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE); 727 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART); 728 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); 729 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP); 730 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR); 731 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); 732 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); 733 734 len += snprintf(buf + len, size - len, 735 "%18s : %10u\n", "RX-Pkts-All", 736 sc->debug.stats.rxstats.rx_pkts_all); 737 len += snprintf(buf + len, size - len, 738 "%18s : %10u\n", "RX-Bytes-All", 739 sc->debug.stats.rxstats.rx_bytes_all); 740 741 if (len > size) 742 len = size; 743 744 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 745 kfree(buf); 746 747 return retval; 748 749 #undef PHY_ERR 750 } 751 752 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs) 753 { 754 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++ 755 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++ 756 757 u32 phyerr; 758 759 RX_STAT_INC(rx_pkts_all); 760 sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen; 761 762 if (rs->rs_status & ATH9K_RXERR_CRC) 763 RX_STAT_INC(crc_err); 764 if (rs->rs_status & ATH9K_RXERR_DECRYPT) 765 RX_STAT_INC(decrypt_crc_err); 766 if (rs->rs_status & ATH9K_RXERR_MIC) 767 RX_STAT_INC(mic_err); 768 if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE) 769 RX_STAT_INC(pre_delim_crc_err); 770 if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST) 771 RX_STAT_INC(post_delim_crc_err); 772 if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY) 773 RX_STAT_INC(decrypt_busy_err); 774 775 if (rs->rs_status & ATH9K_RXERR_PHY) { 776 RX_STAT_INC(phy_err); 777 phyerr = rs->rs_phyerr & 0x24; 778 RX_PHY_ERR_INC(phyerr); 779 } 780 781 #undef RX_STAT_INC 782 #undef RX_PHY_ERR_INC 783 } 784 785 static const struct file_operations fops_recv = { 786 .read = read_file_recv, 787 .open = ath9k_debugfs_open, 788 .owner = THIS_MODULE, 789 .llseek = default_llseek, 790 }; 791 792 static ssize_t read_file_regidx(struct file *file, char __user *user_buf, 793 size_t count, loff_t *ppos) 794 { 795 struct ath_softc *sc = file->private_data; 796 char buf[32]; 797 unsigned int len; 798 799 len = sprintf(buf, "0x%08x\n", sc->debug.regidx); 800 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 801 } 802 803 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf, 804 size_t count, loff_t *ppos) 805 { 806 struct ath_softc *sc = file->private_data; 807 unsigned long regidx; 808 char buf[32]; 809 ssize_t len; 810 811 len = min(count, sizeof(buf) - 1); 812 if (copy_from_user(buf, user_buf, len)) 813 return -EFAULT; 814 815 buf[len] = '\0'; 816 if (strict_strtoul(buf, 0, ®idx)) 817 return -EINVAL; 818 819 sc->debug.regidx = regidx; 820 return count; 821 } 822 823 static const struct file_operations fops_regidx = { 824 .read = read_file_regidx, 825 .write = write_file_regidx, 826 .open = ath9k_debugfs_open, 827 .owner = THIS_MODULE, 828 .llseek = default_llseek, 829 }; 830 831 static ssize_t read_file_regval(struct file *file, char __user *user_buf, 832 size_t count, loff_t *ppos) 833 { 834 struct ath_softc *sc = file->private_data; 835 struct ath_hw *ah = sc->sc_ah; 836 char buf[32]; 837 unsigned int len; 838 u32 regval; 839 840 regval = REG_READ_D(ah, sc->debug.regidx); 841 len = sprintf(buf, "0x%08x\n", regval); 842 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 843 } 844 845 static ssize_t write_file_regval(struct file *file, const char __user *user_buf, 846 size_t count, loff_t *ppos) 847 { 848 struct ath_softc *sc = file->private_data; 849 struct ath_hw *ah = sc->sc_ah; 850 unsigned long regval; 851 char buf[32]; 852 ssize_t len; 853 854 len = min(count, sizeof(buf) - 1); 855 if (copy_from_user(buf, user_buf, len)) 856 return -EFAULT; 857 858 buf[len] = '\0'; 859 if (strict_strtoul(buf, 0, ®val)) 860 return -EINVAL; 861 862 REG_WRITE_D(ah, sc->debug.regidx, regval); 863 return count; 864 } 865 866 static const struct file_operations fops_regval = { 867 .read = read_file_regval, 868 .write = write_file_regval, 869 .open = ath9k_debugfs_open, 870 .owner = THIS_MODULE, 871 .llseek = default_llseek, 872 }; 873 874 int ath9k_init_debug(struct ath_hw *ah) 875 { 876 struct ath_common *common = ath9k_hw_common(ah); 877 struct ath_softc *sc = (struct ath_softc *) common->priv; 878 879 if (!ath9k_debugfs_root) 880 return -ENOENT; 881 882 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy), 883 ath9k_debugfs_root); 884 if (!sc->debug.debugfs_phy) 885 return -ENOMEM; 886 887 #ifdef CONFIG_ATH_DEBUG 888 if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR, 889 sc->debug.debugfs_phy, sc, &fops_debug)) 890 goto err; 891 #endif 892 893 if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, 894 sc, &fops_dma)) 895 goto err; 896 897 if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, 898 sc, &fops_interrupt)) 899 goto err; 900 901 if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, 902 sc->debug.debugfs_phy, sc, &fops_wiphy)) 903 goto err; 904 905 if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, 906 sc, &fops_xmit)) 907 goto err; 908 909 if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy, 910 sc, &fops_recv)) 911 goto err; 912 913 if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR, 914 sc->debug.debugfs_phy, sc, &fops_rx_chainmask)) 915 goto err; 916 917 if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR, 918 sc->debug.debugfs_phy, sc, &fops_tx_chainmask)) 919 goto err; 920 921 if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR, 922 sc->debug.debugfs_phy, sc, &fops_regidx)) 923 goto err; 924 925 if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR, 926 sc->debug.debugfs_phy, sc, &fops_regval)) 927 goto err; 928 929 if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR, 930 sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca)) 931 goto err; 932 933 sc->debug.regidx = 0; 934 return 0; 935 err: 936 ath9k_exit_debug(ah); 937 return -ENOMEM; 938 } 939 940 void ath9k_exit_debug(struct ath_hw *ah) 941 { 942 struct ath_common *common = ath9k_hw_common(ah); 943 struct ath_softc *sc = (struct ath_softc *) common->priv; 944 945 debugfs_remove_recursive(sc->debug.debugfs_phy); 946 } 947 948 int ath9k_debug_create_root(void) 949 { 950 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); 951 if (!ath9k_debugfs_root) 952 return -ENOENT; 953 954 return 0; 955 } 956 957 void ath9k_debug_remove_root(void) 958 { 959 debugfs_remove(ath9k_debugfs_root); 960 ath9k_debugfs_root = NULL; 961 } 962