1 /* 2 * Copyright (c) 2004-2011 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 "core.h" 18 19 #include <linux/circ_buf.h> 20 #include <linux/fs.h> 21 #include <linux/vmalloc.h> 22 23 #include "debug.h" 24 #include "target.h" 25 26 struct ath6kl_fwlog_slot { 27 __le32 timestamp; 28 __le32 length; 29 30 /* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */ 31 u8 payload[0]; 32 }; 33 34 #define ATH6KL_FWLOG_SIZE 32768 35 #define ATH6KL_FWLOG_SLOT_SIZE (sizeof(struct ath6kl_fwlog_slot) + \ 36 ATH6KL_FWLOG_PAYLOAD_SIZE) 37 #define ATH6KL_FWLOG_VALID_MASK 0x1ffff 38 39 int ath6kl_printk(const char *level, const char *fmt, ...) 40 { 41 struct va_format vaf; 42 va_list args; 43 int rtn; 44 45 va_start(args, fmt); 46 47 vaf.fmt = fmt; 48 vaf.va = &args; 49 50 rtn = printk("%sath6kl: %pV", level, &vaf); 51 52 va_end(args); 53 54 return rtn; 55 } 56 57 #ifdef CONFIG_ATH6KL_DEBUG 58 59 #define REG_OUTPUT_LEN_PER_LINE 25 60 #define REGTYPE_STR_LEN 100 61 62 struct ath6kl_diag_reg_info { 63 u32 reg_start; 64 u32 reg_end; 65 const char *reg_info; 66 }; 67 68 static const struct ath6kl_diag_reg_info diag_reg[] = { 69 { 0x20000, 0x200fc, "General DMA and Rx registers" }, 70 { 0x28000, 0x28900, "MAC PCU register & keycache" }, 71 { 0x20800, 0x20a40, "QCU" }, 72 { 0x21000, 0x212f0, "DCU" }, 73 { 0x4000, 0x42e4, "RTC" }, 74 { 0x540000, 0x540000 + (256 * 1024), "RAM" }, 75 { 0x29800, 0x2B210, "Base Band" }, 76 { 0x1C000, 0x1C748, "Analog" }, 77 }; 78 79 void ath6kl_dump_registers(struct ath6kl_device *dev, 80 struct ath6kl_irq_proc_registers *irq_proc_reg, 81 struct ath6kl_irq_enable_reg *irq_enable_reg) 82 { 83 84 ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n")); 85 86 if (irq_proc_reg != NULL) { 87 ath6kl_dbg(ATH6KL_DBG_ANY, 88 "Host Int status: 0x%x\n", 89 irq_proc_reg->host_int_status); 90 ath6kl_dbg(ATH6KL_DBG_ANY, 91 "CPU Int status: 0x%x\n", 92 irq_proc_reg->cpu_int_status); 93 ath6kl_dbg(ATH6KL_DBG_ANY, 94 "Error Int status: 0x%x\n", 95 irq_proc_reg->error_int_status); 96 ath6kl_dbg(ATH6KL_DBG_ANY, 97 "Counter Int status: 0x%x\n", 98 irq_proc_reg->counter_int_status); 99 ath6kl_dbg(ATH6KL_DBG_ANY, 100 "Mbox Frame: 0x%x\n", 101 irq_proc_reg->mbox_frame); 102 ath6kl_dbg(ATH6KL_DBG_ANY, 103 "Rx Lookahead Valid: 0x%x\n", 104 irq_proc_reg->rx_lkahd_valid); 105 ath6kl_dbg(ATH6KL_DBG_ANY, 106 "Rx Lookahead 0: 0x%x\n", 107 irq_proc_reg->rx_lkahd[0]); 108 ath6kl_dbg(ATH6KL_DBG_ANY, 109 "Rx Lookahead 1: 0x%x\n", 110 irq_proc_reg->rx_lkahd[1]); 111 112 if (dev->ar->mbox_info.gmbox_addr != 0) { 113 /* 114 * If the target supports GMBOX hardware, dump some 115 * additional state. 116 */ 117 ath6kl_dbg(ATH6KL_DBG_ANY, 118 "GMBOX Host Int status 2: 0x%x\n", 119 irq_proc_reg->host_int_status2); 120 ath6kl_dbg(ATH6KL_DBG_ANY, 121 "GMBOX RX Avail: 0x%x\n", 122 irq_proc_reg->gmbox_rx_avail); 123 ath6kl_dbg(ATH6KL_DBG_ANY, 124 "GMBOX lookahead alias 0: 0x%x\n", 125 irq_proc_reg->rx_gmbox_lkahd_alias[0]); 126 ath6kl_dbg(ATH6KL_DBG_ANY, 127 "GMBOX lookahead alias 1: 0x%x\n", 128 irq_proc_reg->rx_gmbox_lkahd_alias[1]); 129 } 130 131 } 132 133 if (irq_enable_reg != NULL) { 134 ath6kl_dbg(ATH6KL_DBG_ANY, 135 "Int status Enable: 0x%x\n", 136 irq_enable_reg->int_status_en); 137 ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n", 138 irq_enable_reg->cntr_int_status_en); 139 } 140 ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n"); 141 } 142 143 static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist) 144 { 145 ath6kl_dbg(ATH6KL_DBG_ANY, 146 "--- endpoint: %d svc_id: 0x%X ---\n", 147 ep_dist->endpoint, ep_dist->svc_id); 148 ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags : 0x%X\n", 149 ep_dist->dist_flags); 150 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm : %d\n", 151 ep_dist->cred_norm); 152 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min : %d\n", 153 ep_dist->cred_min); 154 ath6kl_dbg(ATH6KL_DBG_ANY, " credits : %d\n", 155 ep_dist->credits); 156 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd : %d\n", 157 ep_dist->cred_assngd); 158 ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred : %d\n", 159 ep_dist->seek_cred); 160 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz : %d\n", 161 ep_dist->cred_sz); 162 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg : %d\n", 163 ep_dist->cred_per_msg); 164 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist : %d\n", 165 ep_dist->cred_to_dist); 166 ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth : %d\n", 167 get_queue_depth(&((struct htc_endpoint *) 168 ep_dist->htc_rsvd)->txq)); 169 ath6kl_dbg(ATH6KL_DBG_ANY, 170 "----------------------------------\n"); 171 } 172 173 void dump_cred_dist_stats(struct htc_target *target) 174 { 175 struct htc_endpoint_credit_dist *ep_list; 176 177 if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC)) 178 return; 179 180 list_for_each_entry(ep_list, &target->cred_dist_list, list) 181 dump_cred_dist(ep_list); 182 183 ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n", 184 target->cred_dist_cntxt, NULL); 185 ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n", 186 target->cred_dist_cntxt->total_avail_credits, 187 target->cred_dist_cntxt->cur_free_credits); 188 } 189 190 static int ath6kl_debugfs_open(struct inode *inode, struct file *file) 191 { 192 file->private_data = inode->i_private; 193 return 0; 194 } 195 196 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war) 197 { 198 switch (war) { 199 case ATH6KL_WAR_INVALID_RATE: 200 ar->debug.war_stats.invalid_rate++; 201 break; 202 } 203 } 204 205 static ssize_t read_file_war_stats(struct file *file, char __user *user_buf, 206 size_t count, loff_t *ppos) 207 { 208 struct ath6kl *ar = file->private_data; 209 char *buf; 210 unsigned int len = 0, buf_len = 1500; 211 ssize_t ret_cnt; 212 213 buf = kzalloc(buf_len, GFP_KERNEL); 214 if (!buf) 215 return -ENOMEM; 216 217 len += scnprintf(buf + len, buf_len - len, "\n"); 218 len += scnprintf(buf + len, buf_len - len, "%25s\n", 219 "Workaround stats"); 220 len += scnprintf(buf + len, buf_len - len, "%25s\n\n", 221 "================="); 222 len += scnprintf(buf + len, buf_len - len, "%20s %10u\n", 223 "Invalid rates", ar->debug.war_stats.invalid_rate); 224 225 if (WARN_ON(len > buf_len)) 226 len = buf_len; 227 228 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 229 230 kfree(buf); 231 return ret_cnt; 232 } 233 234 static const struct file_operations fops_war_stats = { 235 .read = read_file_war_stats, 236 .open = ath6kl_debugfs_open, 237 .owner = THIS_MODULE, 238 .llseek = default_llseek, 239 }; 240 241 static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf, 242 size_t buf_len) 243 { 244 struct circ_buf *fwlog = &ar->debug.fwlog_buf; 245 size_t space; 246 int i; 247 248 /* entries must all be equal size */ 249 if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE)) 250 return; 251 252 space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE); 253 if (space < buf_len) 254 /* discard oldest slot */ 255 fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) & 256 (ATH6KL_FWLOG_SIZE - 1); 257 258 for (i = 0; i < buf_len; i += space) { 259 space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail, 260 ATH6KL_FWLOG_SIZE); 261 262 if ((size_t) space > buf_len - i) 263 space = buf_len - i; 264 265 memcpy(&fwlog->buf[fwlog->head], buf, space); 266 fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1); 267 } 268 269 } 270 271 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len) 272 { 273 struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp; 274 size_t slot_len; 275 276 if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE)) 277 return; 278 279 spin_lock_bh(&ar->debug.fwlog_lock); 280 281 slot->timestamp = cpu_to_le32(jiffies); 282 slot->length = cpu_to_le32(len); 283 memcpy(slot->payload, buf, len); 284 285 slot_len = sizeof(*slot) + len; 286 287 if (slot_len < ATH6KL_FWLOG_SLOT_SIZE) 288 memset(slot->payload + len, 0, 289 ATH6KL_FWLOG_SLOT_SIZE - slot_len); 290 291 ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE); 292 293 spin_unlock_bh(&ar->debug.fwlog_lock); 294 } 295 296 static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar) 297 { 298 return CIRC_CNT(ar->debug.fwlog_buf.head, 299 ar->debug.fwlog_buf.tail, 300 ATH6KL_FWLOG_SLOT_SIZE) == 0; 301 } 302 303 static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf, 304 size_t count, loff_t *ppos) 305 { 306 struct ath6kl *ar = file->private_data; 307 struct circ_buf *fwlog = &ar->debug.fwlog_buf; 308 size_t len = 0, buf_len = count; 309 ssize_t ret_cnt; 310 char *buf; 311 int ccnt; 312 313 buf = vmalloc(buf_len); 314 if (!buf) 315 return -ENOMEM; 316 317 /* read undelivered logs from firmware */ 318 ath6kl_read_fwlogs(ar); 319 320 spin_lock_bh(&ar->debug.fwlog_lock); 321 322 while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) { 323 ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail, 324 ATH6KL_FWLOG_SIZE); 325 326 if ((size_t) ccnt > buf_len - len) 327 ccnt = buf_len - len; 328 329 memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt); 330 len += ccnt; 331 332 fwlog->tail = (fwlog->tail + ccnt) & 333 (ATH6KL_FWLOG_SIZE - 1); 334 } 335 336 spin_unlock_bh(&ar->debug.fwlog_lock); 337 338 if (WARN_ON(len > buf_len)) 339 len = buf_len; 340 341 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 342 343 vfree(buf); 344 345 return ret_cnt; 346 } 347 348 static const struct file_operations fops_fwlog = { 349 .open = ath6kl_debugfs_open, 350 .read = ath6kl_fwlog_read, 351 .owner = THIS_MODULE, 352 .llseek = default_llseek, 353 }; 354 355 static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf, 356 size_t count, loff_t *ppos) 357 { 358 struct ath6kl *ar = file->private_data; 359 char buf[16]; 360 int len; 361 362 len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask); 363 364 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 365 } 366 367 static ssize_t ath6kl_fwlog_mask_write(struct file *file, 368 const char __user *user_buf, 369 size_t count, loff_t *ppos) 370 { 371 struct ath6kl *ar = file->private_data; 372 int ret; 373 374 ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask); 375 if (ret) 376 return ret; 377 378 ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi, 379 ATH6KL_FWLOG_VALID_MASK, 380 ar->debug.fwlog_mask); 381 if (ret) 382 return ret; 383 384 return count; 385 } 386 387 static const struct file_operations fops_fwlog_mask = { 388 .open = ath6kl_debugfs_open, 389 .read = ath6kl_fwlog_mask_read, 390 .write = ath6kl_fwlog_mask_write, 391 .owner = THIS_MODULE, 392 .llseek = default_llseek, 393 }; 394 395 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf, 396 size_t count, loff_t *ppos) 397 { 398 struct ath6kl *ar = file->private_data; 399 struct target_stats *tgt_stats = &ar->target_stats; 400 char *buf; 401 unsigned int len = 0, buf_len = 1500; 402 int i; 403 long left; 404 ssize_t ret_cnt; 405 406 buf = kzalloc(buf_len, GFP_KERNEL); 407 if (!buf) 408 return -ENOMEM; 409 410 if (down_interruptible(&ar->sem)) { 411 kfree(buf); 412 return -EBUSY; 413 } 414 415 set_bit(STATS_UPDATE_PEND, &ar->flag); 416 417 if (ath6kl_wmi_get_stats_cmd(ar->wmi)) { 418 up(&ar->sem); 419 kfree(buf); 420 return -EIO; 421 } 422 423 left = wait_event_interruptible_timeout(ar->event_wq, 424 !test_bit(STATS_UPDATE_PEND, 425 &ar->flag), WMI_TIMEOUT); 426 427 up(&ar->sem); 428 429 if (left <= 0) { 430 kfree(buf); 431 return -ETIMEDOUT; 432 } 433 434 len += scnprintf(buf + len, buf_len - len, "\n"); 435 len += scnprintf(buf + len, buf_len - len, "%25s\n", 436 "Target Tx stats"); 437 len += scnprintf(buf + len, buf_len - len, "%25s\n\n", 438 "================="); 439 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 440 "Ucast packets", tgt_stats->tx_ucast_pkt); 441 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 442 "Bcast packets", tgt_stats->tx_bcast_pkt); 443 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 444 "Ucast byte", tgt_stats->tx_ucast_byte); 445 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 446 "Bcast byte", tgt_stats->tx_bcast_byte); 447 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 448 "Rts success cnt", tgt_stats->tx_rts_success_cnt); 449 for (i = 0; i < 4; i++) 450 len += scnprintf(buf + len, buf_len - len, 451 "%18s %d %10llu\n", "PER on ac", 452 i, tgt_stats->tx_pkt_per_ac[i]); 453 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 454 "Error", tgt_stats->tx_err); 455 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 456 "Fail count", tgt_stats->tx_fail_cnt); 457 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 458 "Retry count", tgt_stats->tx_retry_cnt); 459 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 460 "Multi retry cnt", tgt_stats->tx_mult_retry_cnt); 461 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 462 "Rts fail cnt", tgt_stats->tx_rts_fail_cnt); 463 len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n", 464 "TKIP counter measure used", 465 tgt_stats->tkip_cnter_measures_invoked); 466 467 len += scnprintf(buf + len, buf_len - len, "%25s\n", 468 "Target Rx stats"); 469 len += scnprintf(buf + len, buf_len - len, "%25s\n", 470 "================="); 471 472 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 473 "Ucast packets", tgt_stats->rx_ucast_pkt); 474 len += scnprintf(buf + len, buf_len - len, "%20s %10d\n", 475 "Ucast Rate", tgt_stats->rx_ucast_rate); 476 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 477 "Bcast packets", tgt_stats->rx_bcast_pkt); 478 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 479 "Ucast byte", tgt_stats->rx_ucast_byte); 480 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 481 "Bcast byte", tgt_stats->rx_bcast_byte); 482 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 483 "Fragmented pkt", tgt_stats->rx_frgment_pkt); 484 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 485 "Error", tgt_stats->rx_err); 486 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 487 "CRC Err", tgt_stats->rx_crc_err); 488 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 489 "Key chache miss", tgt_stats->rx_key_cache_miss); 490 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 491 "Decrypt Err", tgt_stats->rx_decrypt_err); 492 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 493 "Duplicate frame", tgt_stats->rx_dupl_frame); 494 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 495 "Tkip Mic failure", tgt_stats->tkip_local_mic_fail); 496 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 497 "TKIP format err", tgt_stats->tkip_fmt_err); 498 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 499 "CCMP format Err", tgt_stats->ccmp_fmt_err); 500 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n", 501 "CCMP Replay Err", tgt_stats->ccmp_replays); 502 503 len += scnprintf(buf + len, buf_len - len, "%25s\n", 504 "Misc Target stats"); 505 len += scnprintf(buf + len, buf_len - len, "%25s\n", 506 "================="); 507 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 508 "Beacon Miss count", tgt_stats->cs_bmiss_cnt); 509 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 510 "Num Connects", tgt_stats->cs_connect_cnt); 511 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 512 "Num disconnects", tgt_stats->cs_discon_cnt); 513 len += scnprintf(buf + len, buf_len - len, "%20s %10d\n", 514 "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi); 515 516 if (len > buf_len) 517 len = buf_len; 518 519 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 520 521 kfree(buf); 522 return ret_cnt; 523 } 524 525 static const struct file_operations fops_tgt_stats = { 526 .read = read_file_tgt_stats, 527 .open = ath6kl_debugfs_open, 528 .owner = THIS_MODULE, 529 .llseek = default_llseek, 530 }; 531 532 #define print_credit_info(fmt_str, ep_list_field) \ 533 (len += scnprintf(buf + len, buf_len - len, fmt_str, \ 534 ep_list->ep_list_field)) 535 #define CREDIT_INFO_DISPLAY_STRING_LEN 200 536 #define CREDIT_INFO_LEN 128 537 538 static ssize_t read_file_credit_dist_stats(struct file *file, 539 char __user *user_buf, 540 size_t count, loff_t *ppos) 541 { 542 struct ath6kl *ar = file->private_data; 543 struct htc_target *target = ar->htc_target; 544 struct htc_endpoint_credit_dist *ep_list; 545 char *buf; 546 unsigned int buf_len, len = 0; 547 ssize_t ret_cnt; 548 549 buf_len = CREDIT_INFO_DISPLAY_STRING_LEN + 550 get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN; 551 buf = kzalloc(buf_len, GFP_KERNEL); 552 if (!buf) 553 return -ENOMEM; 554 555 len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", 556 "Total Avail Credits: ", 557 target->cred_dist_cntxt->total_avail_credits); 558 len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", 559 "Free credits :", 560 target->cred_dist_cntxt->cur_free_credits); 561 562 len += scnprintf(buf + len, buf_len - len, 563 " Epid Flags Cred_norm Cred_min Credits Cred_assngd" 564 " Seek_cred Cred_sz Cred_per_msg Cred_to_dist" 565 " qdepth\n"); 566 567 list_for_each_entry(ep_list, &target->cred_dist_list, list) { 568 print_credit_info(" %2d", endpoint); 569 print_credit_info("%10x", dist_flags); 570 print_credit_info("%8d", cred_norm); 571 print_credit_info("%9d", cred_min); 572 print_credit_info("%9d", credits); 573 print_credit_info("%10d", cred_assngd); 574 print_credit_info("%13d", seek_cred); 575 print_credit_info("%12d", cred_sz); 576 print_credit_info("%9d", cred_per_msg); 577 print_credit_info("%14d", cred_to_dist); 578 len += scnprintf(buf + len, buf_len - len, "%12d\n", 579 get_queue_depth(&((struct htc_endpoint *) 580 ep_list->htc_rsvd)->txq)); 581 } 582 583 if (len > buf_len) 584 len = buf_len; 585 586 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 587 kfree(buf); 588 return ret_cnt; 589 } 590 591 static const struct file_operations fops_credit_dist_stats = { 592 .read = read_file_credit_dist_stats, 593 .open = ath6kl_debugfs_open, 594 .owner = THIS_MODULE, 595 .llseek = default_llseek, 596 }; 597 598 static unsigned long ath6kl_get_num_reg(void) 599 { 600 int i; 601 unsigned long n_reg = 0; 602 603 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) 604 n_reg = n_reg + 605 (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1; 606 607 return n_reg; 608 } 609 610 static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr) 611 { 612 int i; 613 614 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) { 615 if (reg_addr >= diag_reg[i].reg_start && 616 reg_addr <= diag_reg[i].reg_end) 617 return true; 618 } 619 620 return false; 621 } 622 623 static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf, 624 size_t count, loff_t *ppos) 625 { 626 struct ath6kl *ar = file->private_data; 627 u8 buf[50]; 628 unsigned int len = 0; 629 630 if (ar->debug.dbgfs_diag_reg) 631 len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n", 632 ar->debug.dbgfs_diag_reg); 633 else 634 len += scnprintf(buf + len, sizeof(buf) - len, 635 "All diag registers\n"); 636 637 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 638 } 639 640 static ssize_t ath6kl_regread_write(struct file *file, 641 const char __user *user_buf, 642 size_t count, loff_t *ppos) 643 { 644 struct ath6kl *ar = file->private_data; 645 u8 buf[50]; 646 unsigned int len; 647 unsigned long reg_addr; 648 649 len = min(count, sizeof(buf) - 1); 650 if (copy_from_user(buf, user_buf, len)) 651 return -EFAULT; 652 653 buf[len] = '\0'; 654 655 if (strict_strtoul(buf, 0, ®_addr)) 656 return -EINVAL; 657 658 if ((reg_addr % 4) != 0) 659 return -EINVAL; 660 661 if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr)) 662 return -EINVAL; 663 664 ar->debug.dbgfs_diag_reg = reg_addr; 665 666 return count; 667 } 668 669 static const struct file_operations fops_diag_reg_read = { 670 .read = ath6kl_regread_read, 671 .write = ath6kl_regread_write, 672 .open = ath6kl_debugfs_open, 673 .owner = THIS_MODULE, 674 .llseek = default_llseek, 675 }; 676 677 static int ath6kl_regdump_open(struct inode *inode, struct file *file) 678 { 679 struct ath6kl *ar = inode->i_private; 680 u8 *buf; 681 unsigned long int reg_len; 682 unsigned int len = 0, n_reg; 683 u32 addr; 684 __le32 reg_val; 685 int i, status; 686 687 /* Dump all the registers if no register is specified */ 688 if (!ar->debug.dbgfs_diag_reg) 689 n_reg = ath6kl_get_num_reg(); 690 else 691 n_reg = 1; 692 693 reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE; 694 if (n_reg > 1) 695 reg_len += REGTYPE_STR_LEN; 696 697 buf = vmalloc(reg_len); 698 if (!buf) 699 return -ENOMEM; 700 701 if (n_reg == 1) { 702 addr = ar->debug.dbgfs_diag_reg; 703 704 status = ath6kl_diag_read32(ar, 705 TARG_VTOP(ar->target_type, addr), 706 (u32 *)®_val); 707 if (status) 708 goto fail_reg_read; 709 710 len += scnprintf(buf + len, reg_len - len, 711 "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val)); 712 goto done; 713 } 714 715 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) { 716 len += scnprintf(buf + len, reg_len - len, 717 "%s\n", diag_reg[i].reg_info); 718 for (addr = diag_reg[i].reg_start; 719 addr <= diag_reg[i].reg_end; addr += 4) { 720 status = ath6kl_diag_read32(ar, 721 TARG_VTOP(ar->target_type, addr), 722 (u32 *)®_val); 723 if (status) 724 goto fail_reg_read; 725 726 len += scnprintf(buf + len, reg_len - len, 727 "0x%06x 0x%08x\n", 728 addr, le32_to_cpu(reg_val)); 729 } 730 } 731 732 done: 733 file->private_data = buf; 734 return 0; 735 736 fail_reg_read: 737 ath6kl_warn("Unable to read memory:%u\n", addr); 738 vfree(buf); 739 return -EIO; 740 } 741 742 static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf, 743 size_t count, loff_t *ppos) 744 { 745 u8 *buf = file->private_data; 746 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); 747 } 748 749 static int ath6kl_regdump_release(struct inode *inode, struct file *file) 750 { 751 vfree(file->private_data); 752 return 0; 753 } 754 755 static const struct file_operations fops_reg_dump = { 756 .open = ath6kl_regdump_open, 757 .read = ath6kl_regdump_read, 758 .release = ath6kl_regdump_release, 759 .owner = THIS_MODULE, 760 .llseek = default_llseek, 761 }; 762 763 static ssize_t ath6kl_lrssi_roam_write(struct file *file, 764 const char __user *user_buf, 765 size_t count, loff_t *ppos) 766 { 767 struct ath6kl *ar = file->private_data; 768 unsigned long lrssi_roam_threshold; 769 char buf[32]; 770 ssize_t len; 771 772 len = min(count, sizeof(buf) - 1); 773 if (copy_from_user(buf, user_buf, len)) 774 return -EFAULT; 775 776 buf[len] = '\0'; 777 if (strict_strtoul(buf, 0, &lrssi_roam_threshold)) 778 return -EINVAL; 779 780 ar->lrssi_roam_threshold = lrssi_roam_threshold; 781 782 ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold); 783 784 return count; 785 } 786 787 static ssize_t ath6kl_lrssi_roam_read(struct file *file, 788 char __user *user_buf, 789 size_t count, loff_t *ppos) 790 { 791 struct ath6kl *ar = file->private_data; 792 char buf[32]; 793 unsigned int len; 794 795 len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold); 796 797 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 798 } 799 800 static const struct file_operations fops_lrssi_roam_threshold = { 801 .read = ath6kl_lrssi_roam_read, 802 .write = ath6kl_lrssi_roam_write, 803 .open = ath6kl_debugfs_open, 804 .owner = THIS_MODULE, 805 .llseek = default_llseek, 806 }; 807 808 static ssize_t ath6kl_regwrite_read(struct file *file, 809 char __user *user_buf, 810 size_t count, loff_t *ppos) 811 { 812 struct ath6kl *ar = file->private_data; 813 u8 buf[32]; 814 unsigned int len = 0; 815 816 len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n", 817 ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr); 818 819 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 820 } 821 822 static ssize_t ath6kl_regwrite_write(struct file *file, 823 const char __user *user_buf, 824 size_t count, loff_t *ppos) 825 { 826 struct ath6kl *ar = file->private_data; 827 char buf[32]; 828 char *sptr, *token; 829 unsigned int len = 0; 830 u32 reg_addr, reg_val; 831 832 len = min(count, sizeof(buf) - 1); 833 if (copy_from_user(buf, user_buf, len)) 834 return -EFAULT; 835 836 buf[len] = '\0'; 837 sptr = buf; 838 839 token = strsep(&sptr, "="); 840 if (!token) 841 return -EINVAL; 842 843 if (kstrtou32(token, 0, ®_addr)) 844 return -EINVAL; 845 846 if (!ath6kl_dbg_is_diag_reg_valid(reg_addr)) 847 return -EINVAL; 848 849 if (kstrtou32(sptr, 0, ®_val)) 850 return -EINVAL; 851 852 ar->debug.diag_reg_addr_wr = reg_addr; 853 ar->debug.diag_reg_val_wr = reg_val; 854 855 if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr, 856 cpu_to_le32(ar->debug.diag_reg_val_wr))) 857 return -EIO; 858 859 return count; 860 } 861 862 static const struct file_operations fops_diag_reg_write = { 863 .read = ath6kl_regwrite_read, 864 .write = ath6kl_regwrite_write, 865 .open = ath6kl_debugfs_open, 866 .owner = THIS_MODULE, 867 .llseek = default_llseek, 868 }; 869 870 int ath6kl_debug_init(struct ath6kl *ar) 871 { 872 ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE); 873 if (ar->debug.fwlog_buf.buf == NULL) 874 return -ENOMEM; 875 876 ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL); 877 if (ar->debug.fwlog_tmp == NULL) { 878 vfree(ar->debug.fwlog_buf.buf); 879 return -ENOMEM; 880 } 881 882 spin_lock_init(&ar->debug.fwlog_lock); 883 884 /* 885 * Actually we are lying here but don't know how to read the mask 886 * value from the firmware. 887 */ 888 ar->debug.fwlog_mask = 0; 889 890 ar->debugfs_phy = debugfs_create_dir("ath6kl", 891 ar->wdev->wiphy->debugfsdir); 892 if (!ar->debugfs_phy) { 893 vfree(ar->debug.fwlog_buf.buf); 894 kfree(ar->debug.fwlog_tmp); 895 return -ENOMEM; 896 } 897 898 debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar, 899 &fops_tgt_stats); 900 901 debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar, 902 &fops_credit_dist_stats); 903 904 debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar, 905 &fops_fwlog); 906 907 debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy, 908 ar, &fops_fwlog_mask); 909 910 debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar, 911 &fops_diag_reg_read); 912 913 debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar, 914 &fops_reg_dump); 915 916 debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR, 917 ar->debugfs_phy, ar, &fops_lrssi_roam_threshold); 918 919 debugfs_create_file("reg_write", S_IRUSR | S_IWUSR, 920 ar->debugfs_phy, ar, &fops_diag_reg_write); 921 922 debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar, 923 &fops_war_stats); 924 925 return 0; 926 } 927 928 void ath6kl_debug_cleanup(struct ath6kl *ar) 929 { 930 vfree(ar->debug.fwlog_buf.buf); 931 kfree(ar->debug.fwlog_tmp); 932 } 933 934 #endif 935