1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 33 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <net/mac80211.h> 65 66 #include "iwl-debug.h" 67 #include "iwl-io.h" 68 #include "iwl-prph.h" 69 #include "iwl-csr.h" 70 #include "mvm.h" 71 #include "fw/api/rs.h" 72 73 /* 74 * Will return 0 even if the cmd failed when RFKILL is asserted unless 75 * CMD_WANT_SKB is set in cmd->flags. 76 */ 77 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 78 { 79 int ret; 80 81 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 82 if (WARN_ON(mvm->d3_test_active)) 83 return -EIO; 84 #endif 85 86 /* 87 * Synchronous commands from this op-mode must hold 88 * the mutex, this ensures we don't try to send two 89 * (or more) synchronous commands at a time. 90 */ 91 if (!(cmd->flags & CMD_ASYNC)) 92 lockdep_assert_held(&mvm->mutex); 93 94 ret = iwl_trans_send_cmd(mvm->trans, cmd); 95 96 /* 97 * If the caller wants the SKB, then don't hide any problems, the 98 * caller might access the response buffer which will be NULL if 99 * the command failed. 100 */ 101 if (cmd->flags & CMD_WANT_SKB) 102 return ret; 103 104 /* Silently ignore failures if RFKILL is asserted */ 105 if (!ret || ret == -ERFKILL) 106 return 0; 107 return ret; 108 } 109 110 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 111 u32 flags, u16 len, const void *data) 112 { 113 struct iwl_host_cmd cmd = { 114 .id = id, 115 .len = { len, }, 116 .data = { data, }, 117 .flags = flags, 118 }; 119 120 return iwl_mvm_send_cmd(mvm, &cmd); 121 } 122 123 /* 124 * We assume that the caller set the status to the success value 125 */ 126 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 127 u32 *status) 128 { 129 struct iwl_rx_packet *pkt; 130 struct iwl_cmd_response *resp; 131 int ret, resp_len; 132 133 lockdep_assert_held(&mvm->mutex); 134 135 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 136 if (WARN_ON(mvm->d3_test_active)) 137 return -EIO; 138 #endif 139 140 /* 141 * Only synchronous commands can wait for status, 142 * we use WANT_SKB so the caller can't. 143 */ 144 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 145 "cmd flags %x", cmd->flags)) 146 return -EINVAL; 147 148 cmd->flags |= CMD_WANT_SKB; 149 150 ret = iwl_trans_send_cmd(mvm->trans, cmd); 151 if (ret == -ERFKILL) { 152 /* 153 * The command failed because of RFKILL, don't update 154 * the status, leave it as success and return 0. 155 */ 156 return 0; 157 } else if (ret) { 158 return ret; 159 } 160 161 pkt = cmd->resp_pkt; 162 163 resp_len = iwl_rx_packet_payload_len(pkt); 164 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 165 ret = -EIO; 166 goto out_free_resp; 167 } 168 169 resp = (void *)pkt->data; 170 *status = le32_to_cpu(resp->status); 171 out_free_resp: 172 iwl_free_resp(cmd); 173 return ret; 174 } 175 176 /* 177 * We assume that the caller set the status to the sucess value 178 */ 179 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 180 const void *data, u32 *status) 181 { 182 struct iwl_host_cmd cmd = { 183 .id = id, 184 .len = { len, }, 185 .data = { data, }, 186 }; 187 188 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 189 } 190 191 #define IWL_DECLARE_RATE_INFO(r) \ 192 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 193 194 /* 195 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 196 */ 197 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 198 IWL_DECLARE_RATE_INFO(1), 199 IWL_DECLARE_RATE_INFO(2), 200 IWL_DECLARE_RATE_INFO(5), 201 IWL_DECLARE_RATE_INFO(11), 202 IWL_DECLARE_RATE_INFO(6), 203 IWL_DECLARE_RATE_INFO(9), 204 IWL_DECLARE_RATE_INFO(12), 205 IWL_DECLARE_RATE_INFO(18), 206 IWL_DECLARE_RATE_INFO(24), 207 IWL_DECLARE_RATE_INFO(36), 208 IWL_DECLARE_RATE_INFO(48), 209 IWL_DECLARE_RATE_INFO(54), 210 }; 211 212 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 213 enum nl80211_band band) 214 { 215 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 216 int idx; 217 int band_offset = 0; 218 219 /* Legacy rate format, search for match in table */ 220 if (band != NL80211_BAND_2GHZ) 221 band_offset = IWL_FIRST_OFDM_RATE; 222 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 223 if (fw_rate_idx_to_plcp[idx] == rate) 224 return idx - band_offset; 225 226 return -1; 227 } 228 229 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 230 { 231 /* Get PLCP rate for tx_cmd->rate_n_flags */ 232 return fw_rate_idx_to_plcp[rate_idx]; 233 } 234 235 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 236 { 237 static const u8 mac80211_ac_to_ucode_ac[] = { 238 AC_VO, 239 AC_VI, 240 AC_BE, 241 AC_BK 242 }; 243 244 return mac80211_ac_to_ucode_ac[ac]; 245 } 246 247 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 248 { 249 struct iwl_rx_packet *pkt = rxb_addr(rxb); 250 struct iwl_error_resp *err_resp = (void *)pkt->data; 251 252 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 253 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 254 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 255 le16_to_cpu(err_resp->bad_cmd_seq_num), 256 le32_to_cpu(err_resp->error_service)); 257 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 258 le64_to_cpu(err_resp->timestamp)); 259 } 260 261 /* 262 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 263 * The parameter should also be a combination of ANT_[ABC]. 264 */ 265 u8 first_antenna(u8 mask) 266 { 267 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 268 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 269 return BIT(0); 270 return BIT(ffs(mask) - 1); 271 } 272 273 /* 274 * Toggles between TX antennas to send the probe request on. 275 * Receives the bitmask of valid TX antennas and the *index* used 276 * for the last TX, and returns the next valid *index* to use. 277 * In order to set it in the tx_cmd, must do BIT(idx). 278 */ 279 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 280 { 281 u8 ind = last_idx; 282 int i; 283 284 for (i = 0; i < MAX_ANT_NUM; i++) { 285 ind = (ind + 1) % MAX_ANT_NUM; 286 if (valid & BIT(ind)) 287 return ind; 288 } 289 290 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 291 return last_idx; 292 } 293 294 #define FW_SYSASSERT_CPU_MASK 0xf0000000 295 static const struct { 296 const char *name; 297 u8 num; 298 } advanced_lookup[] = { 299 { "NMI_INTERRUPT_WDG", 0x34 }, 300 { "SYSASSERT", 0x35 }, 301 { "UCODE_VERSION_MISMATCH", 0x37 }, 302 { "BAD_COMMAND", 0x38 }, 303 { "BAD_COMMAND", 0x39 }, 304 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 305 { "FATAL_ERROR", 0x3D }, 306 { "NMI_TRM_HW_ERR", 0x46 }, 307 { "NMI_INTERRUPT_TRM", 0x4C }, 308 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 309 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 310 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 311 { "NMI_INTERRUPT_HOST", 0x66 }, 312 { "NMI_INTERRUPT_LMAC_FATAL", 0x70 }, 313 { "NMI_INTERRUPT_UMAC_FATAL", 0x71 }, 314 { "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 }, 315 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 316 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 317 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 318 { "ADVANCED_SYSASSERT", 0 }, 319 }; 320 321 static const char *desc_lookup(u32 num) 322 { 323 int i; 324 325 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 326 if (advanced_lookup[i].num == (num & ~FW_SYSASSERT_CPU_MASK)) 327 return advanced_lookup[i].name; 328 329 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 330 return advanced_lookup[i].name; 331 } 332 333 /* 334 * Note: This structure is read from the device with IO accesses, 335 * and the reading already does the endian conversion. As it is 336 * read with u32-sized accesses, any members with a different size 337 * need to be ordered correctly though! 338 */ 339 struct iwl_error_event_table_v1 { 340 u32 valid; /* (nonzero) valid, (0) log is empty */ 341 u32 error_id; /* type of error */ 342 u32 pc; /* program counter */ 343 u32 blink1; /* branch link */ 344 u32 blink2; /* branch link */ 345 u32 ilink1; /* interrupt link */ 346 u32 ilink2; /* interrupt link */ 347 u32 data1; /* error-specific data */ 348 u32 data2; /* error-specific data */ 349 u32 data3; /* error-specific data */ 350 u32 bcon_time; /* beacon timer */ 351 u32 tsf_low; /* network timestamp function timer */ 352 u32 tsf_hi; /* network timestamp function timer */ 353 u32 gp1; /* GP1 timer register */ 354 u32 gp2; /* GP2 timer register */ 355 u32 gp3; /* GP3 timer register */ 356 u32 ucode_ver; /* uCode version */ 357 u32 hw_ver; /* HW Silicon version */ 358 u32 brd_ver; /* HW board version */ 359 u32 log_pc; /* log program counter */ 360 u32 frame_ptr; /* frame pointer */ 361 u32 stack_ptr; /* stack pointer */ 362 u32 hcmd; /* last host command header */ 363 u32 isr0; /* isr status register LMPM_NIC_ISR0: 364 * rxtx_flag */ 365 u32 isr1; /* isr status register LMPM_NIC_ISR1: 366 * host_flag */ 367 u32 isr2; /* isr status register LMPM_NIC_ISR2: 368 * enc_flag */ 369 u32 isr3; /* isr status register LMPM_NIC_ISR3: 370 * time_flag */ 371 u32 isr4; /* isr status register LMPM_NIC_ISR4: 372 * wico interrupt */ 373 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 374 u32 wait_event; /* wait event() caller address */ 375 u32 l2p_control; /* L2pControlField */ 376 u32 l2p_duration; /* L2pDurationField */ 377 u32 l2p_mhvalid; /* L2pMhValidBits */ 378 u32 l2p_addr_match; /* L2pAddrMatchStat */ 379 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 380 * (LMPM_PMG_SEL) */ 381 u32 u_timestamp; /* indicate when the date and time of the 382 * compilation */ 383 u32 flow_handler; /* FH read/write pointers, RX credit */ 384 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 385 386 struct iwl_error_event_table { 387 u32 valid; /* (nonzero) valid, (0) log is empty */ 388 u32 error_id; /* type of error */ 389 u32 trm_hw_status0; /* TRM HW status */ 390 u32 trm_hw_status1; /* TRM HW status */ 391 u32 blink2; /* branch link */ 392 u32 ilink1; /* interrupt link */ 393 u32 ilink2; /* interrupt link */ 394 u32 data1; /* error-specific data */ 395 u32 data2; /* error-specific data */ 396 u32 data3; /* error-specific data */ 397 u32 bcon_time; /* beacon timer */ 398 u32 tsf_low; /* network timestamp function timer */ 399 u32 tsf_hi; /* network timestamp function timer */ 400 u32 gp1; /* GP1 timer register */ 401 u32 gp2; /* GP2 timer register */ 402 u32 fw_rev_type; /* firmware revision type */ 403 u32 major; /* uCode version major */ 404 u32 minor; /* uCode version minor */ 405 u32 hw_ver; /* HW Silicon version */ 406 u32 brd_ver; /* HW board version */ 407 u32 log_pc; /* log program counter */ 408 u32 frame_ptr; /* frame pointer */ 409 u32 stack_ptr; /* stack pointer */ 410 u32 hcmd; /* last host command header */ 411 u32 isr0; /* isr status register LMPM_NIC_ISR0: 412 * rxtx_flag */ 413 u32 isr1; /* isr status register LMPM_NIC_ISR1: 414 * host_flag */ 415 u32 isr2; /* isr status register LMPM_NIC_ISR2: 416 * enc_flag */ 417 u32 isr3; /* isr status register LMPM_NIC_ISR3: 418 * time_flag */ 419 u32 isr4; /* isr status register LMPM_NIC_ISR4: 420 * wico interrupt */ 421 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 422 u32 wait_event; /* wait event() caller address */ 423 u32 l2p_control; /* L2pControlField */ 424 u32 l2p_duration; /* L2pDurationField */ 425 u32 l2p_mhvalid; /* L2pMhValidBits */ 426 u32 l2p_addr_match; /* L2pAddrMatchStat */ 427 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 428 * (LMPM_PMG_SEL) */ 429 u32 u_timestamp; /* indicate when the date and time of the 430 * compilation */ 431 u32 flow_handler; /* FH read/write pointers, RX credit */ 432 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 433 434 /* 435 * UMAC error struct - relevant starting from family 8000 chip. 436 * Note: This structure is read from the device with IO accesses, 437 * and the reading already does the endian conversion. As it is 438 * read with u32-sized accesses, any members with a different size 439 * need to be ordered correctly though! 440 */ 441 struct iwl_umac_error_event_table { 442 u32 valid; /* (nonzero) valid, (0) log is empty */ 443 u32 error_id; /* type of error */ 444 u32 blink1; /* branch link */ 445 u32 blink2; /* branch link */ 446 u32 ilink1; /* interrupt link */ 447 u32 ilink2; /* interrupt link */ 448 u32 data1; /* error-specific data */ 449 u32 data2; /* error-specific data */ 450 u32 data3; /* error-specific data */ 451 u32 umac_major; 452 u32 umac_minor; 453 u32 frame_pointer; /* core register 27*/ 454 u32 stack_pointer; /* core register 28 */ 455 u32 cmd_header; /* latest host cmd sent to UMAC */ 456 u32 nic_isr_pref; /* ISR status register */ 457 } __packed; 458 459 #define ERROR_START_OFFSET (1 * sizeof(u32)) 460 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 461 462 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 463 { 464 struct iwl_trans *trans = mvm->trans; 465 struct iwl_umac_error_event_table table; 466 u32 base = mvm->trans->dbg.umac_error_event_table; 467 468 if (!mvm->support_umac_log && 469 !(mvm->trans->dbg.error_event_table_tlv_status & 470 IWL_ERROR_EVENT_TABLE_UMAC)) 471 return; 472 473 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 474 475 if (table.valid) 476 mvm->fwrt.dump.umac_err_id = table.error_id; 477 478 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 479 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 480 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 481 mvm->status, table.valid); 482 } 483 484 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 485 desc_lookup(table.error_id)); 486 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 487 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 488 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 489 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 490 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 491 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 492 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 493 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 494 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 495 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 496 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 497 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 498 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 499 } 500 501 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 502 { 503 struct iwl_trans *trans = mvm->trans; 504 struct iwl_error_event_table table; 505 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num]; 506 507 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 508 if (!base) 509 base = mvm->fw->init_errlog_ptr; 510 } else { 511 if (!base) 512 base = mvm->fw->inst_errlog_ptr; 513 } 514 515 if (base < 0x400000) { 516 IWL_ERR(mvm, 517 "Not valid error log pointer 0x%08X for %s uCode\n", 518 base, 519 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 520 ? "Init" : "RT"); 521 return; 522 } 523 524 /* check if there is a HW error */ 525 val = iwl_trans_read_mem32(trans, base); 526 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 527 int err; 528 529 IWL_ERR(trans, "HW error, resetting before reading\n"); 530 531 /* reset the device */ 532 iwl_trans_sw_reset(trans); 533 534 err = iwl_finish_nic_init(trans, trans->trans_cfg); 535 if (err) 536 return; 537 } 538 539 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 540 541 if (table.valid) 542 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 543 544 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 545 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 546 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 547 mvm->status, table.valid); 548 } 549 550 /* Do not change this output - scripts rely on it */ 551 552 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 553 554 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 555 desc_lookup(table.error_id)); 556 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 557 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 558 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 559 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 560 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 561 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 562 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 563 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 564 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 565 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 566 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 567 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 568 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 569 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 570 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 571 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 572 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 573 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 574 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 575 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 576 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 577 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 578 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 579 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 580 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 581 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 582 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 583 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 584 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 585 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 586 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 587 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 588 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 589 } 590 591 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 592 { 593 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 594 IWL_ERR(mvm, 595 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 596 return; 597 } 598 599 iwl_mvm_dump_lmac_error_log(mvm, 0); 600 601 if (mvm->trans->dbg.lmac_error_event_table[1]) 602 iwl_mvm_dump_lmac_error_log(mvm, 1); 603 604 iwl_mvm_dump_umac_error_log(mvm); 605 606 iwl_fw_error_print_fseq_regs(&mvm->fwrt); 607 } 608 609 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 610 int tid, int frame_limit, u16 ssn) 611 { 612 struct iwl_scd_txq_cfg_cmd cmd = { 613 .scd_queue = queue, 614 .action = SCD_CFG_ENABLE_QUEUE, 615 .window = frame_limit, 616 .sta_id = sta_id, 617 .ssn = cpu_to_le16(ssn), 618 .tx_fifo = fifo, 619 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 620 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 621 .tid = tid, 622 }; 623 int ret; 624 625 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 626 return -EINVAL; 627 628 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 629 "Trying to reconfig unallocated queue %d\n", queue)) 630 return -ENXIO; 631 632 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 633 634 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 635 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 636 queue, fifo, ret); 637 638 return ret; 639 } 640 641 /** 642 * iwl_mvm_send_lq_cmd() - Send link quality command 643 * @sync: This command can be sent synchronously. 644 * 645 * The link quality command is sent as the last step of station creation. 646 * This is the special case in which init is set and we call a callback in 647 * this case to clear the state indicating that station creation is in 648 * progress. 649 */ 650 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 651 { 652 struct iwl_host_cmd cmd = { 653 .id = LQ_CMD, 654 .len = { sizeof(struct iwl_lq_cmd), }, 655 .flags = CMD_ASYNC, 656 .data = { lq, }, 657 }; 658 659 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 660 iwl_mvm_has_tlc_offload(mvm))) 661 return -EINVAL; 662 663 return iwl_mvm_send_cmd(mvm, &cmd); 664 } 665 666 /** 667 * iwl_mvm_update_smps - Get a request to change the SMPS mode 668 * @req_type: The part of the driver who call for a change. 669 * @smps_requests: The request to change the SMPS mode. 670 * 671 * Get a requst to change the SMPS mode, 672 * and change it according to all other requests in the driver. 673 */ 674 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 675 enum iwl_mvm_smps_type_request req_type, 676 enum ieee80211_smps_mode smps_request) 677 { 678 struct iwl_mvm_vif *mvmvif; 679 enum ieee80211_smps_mode smps_mode; 680 int i; 681 682 lockdep_assert_held(&mvm->mutex); 683 684 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 685 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 686 return; 687 688 if (vif->type == NL80211_IFTYPE_AP) 689 smps_mode = IEEE80211_SMPS_OFF; 690 else 691 smps_mode = IEEE80211_SMPS_AUTOMATIC; 692 693 mvmvif = iwl_mvm_vif_from_mac80211(vif); 694 mvmvif->smps_requests[req_type] = smps_request; 695 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 696 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 697 smps_mode = IEEE80211_SMPS_STATIC; 698 break; 699 } 700 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 701 smps_mode = IEEE80211_SMPS_DYNAMIC; 702 } 703 704 ieee80211_request_smps(vif, smps_mode); 705 } 706 707 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 708 { 709 struct iwl_statistics_cmd scmd = { 710 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 711 }; 712 struct iwl_host_cmd cmd = { 713 .id = STATISTICS_CMD, 714 .len[0] = sizeof(scmd), 715 .data[0] = &scmd, 716 .flags = CMD_WANT_SKB, 717 }; 718 int ret; 719 720 ret = iwl_mvm_send_cmd(mvm, &cmd); 721 if (ret) 722 return ret; 723 724 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 725 iwl_free_resp(&cmd); 726 727 if (clear) 728 iwl_mvm_accu_radio_stats(mvm); 729 730 return 0; 731 } 732 733 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 734 { 735 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 736 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 737 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 738 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 739 } 740 741 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 742 struct ieee80211_vif *vif) 743 { 744 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 745 bool *result = _data; 746 int i; 747 748 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 749 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 750 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 751 *result = false; 752 } 753 } 754 755 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 756 { 757 bool result = true; 758 759 lockdep_assert_held(&mvm->mutex); 760 761 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 762 return false; 763 764 if (mvm->cfg->rx_with_siso_diversity) 765 return false; 766 767 ieee80211_iterate_active_interfaces_atomic( 768 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 769 iwl_mvm_diversity_iter, &result); 770 771 return result; 772 } 773 774 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 775 bool low_latency, u16 mac_id) 776 { 777 struct iwl_mac_low_latency_cmd cmd = { 778 .mac_id = cpu_to_le32(mac_id) 779 }; 780 781 if (!fw_has_capa(&mvm->fw->ucode_capa, 782 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 783 return; 784 785 if (low_latency) { 786 /* currently we don't care about the direction */ 787 cmd.low_latency_rx = 1; 788 cmd.low_latency_tx = 1; 789 } 790 791 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 792 MAC_CONF_GROUP, 0), 793 0, sizeof(cmd), &cmd)) 794 IWL_ERR(mvm, "Failed to send low latency command\n"); 795 } 796 797 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 798 bool low_latency, 799 enum iwl_mvm_low_latency_cause cause) 800 { 801 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 802 int res; 803 bool prev; 804 805 lockdep_assert_held(&mvm->mutex); 806 807 prev = iwl_mvm_vif_low_latency(mvmvif); 808 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 809 810 low_latency = iwl_mvm_vif_low_latency(mvmvif); 811 812 if (low_latency == prev) 813 return 0; 814 815 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 816 817 res = iwl_mvm_update_quotas(mvm, false, NULL); 818 if (res) 819 return res; 820 821 iwl_mvm_bt_coex_vif_change(mvm); 822 823 return iwl_mvm_power_update_mac(mvm); 824 } 825 826 struct iwl_mvm_low_latency_iter { 827 bool result; 828 bool result_per_band[NUM_NL80211_BANDS]; 829 }; 830 831 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 832 { 833 struct iwl_mvm_low_latency_iter *result = _data; 834 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 835 enum nl80211_band band; 836 837 if (iwl_mvm_vif_low_latency(mvmvif)) { 838 result->result = true; 839 840 if (!mvmvif->phy_ctxt) 841 return; 842 843 band = mvmvif->phy_ctxt->channel->band; 844 result->result_per_band[band] = true; 845 } 846 } 847 848 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 849 { 850 struct iwl_mvm_low_latency_iter data = {}; 851 852 ieee80211_iterate_active_interfaces_atomic( 853 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 854 iwl_mvm_ll_iter, &data); 855 856 return data.result; 857 } 858 859 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 860 { 861 struct iwl_mvm_low_latency_iter data = {}; 862 863 ieee80211_iterate_active_interfaces_atomic( 864 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 865 iwl_mvm_ll_iter, &data); 866 867 return data.result_per_band[band]; 868 } 869 870 struct iwl_bss_iter_data { 871 struct ieee80211_vif *vif; 872 bool error; 873 }; 874 875 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 876 struct ieee80211_vif *vif) 877 { 878 struct iwl_bss_iter_data *data = _data; 879 880 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 881 return; 882 883 if (data->vif) { 884 data->error = true; 885 return; 886 } 887 888 data->vif = vif; 889 } 890 891 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 892 { 893 struct iwl_bss_iter_data bss_iter_data = {}; 894 895 ieee80211_iterate_active_interfaces_atomic( 896 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 897 iwl_mvm_bss_iface_iterator, &bss_iter_data); 898 899 if (bss_iter_data.error) { 900 IWL_ERR(mvm, "More than one managed interface active!\n"); 901 return ERR_PTR(-EINVAL); 902 } 903 904 return bss_iter_data.vif; 905 } 906 907 struct iwl_sta_iter_data { 908 bool assoc; 909 }; 910 911 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 912 struct ieee80211_vif *vif) 913 { 914 struct iwl_sta_iter_data *data = _data; 915 916 if (vif->type != NL80211_IFTYPE_STATION) 917 return; 918 919 if (vif->bss_conf.assoc) 920 data->assoc = true; 921 } 922 923 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 924 { 925 struct iwl_sta_iter_data data = { 926 .assoc = false, 927 }; 928 929 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 930 IEEE80211_IFACE_ITER_NORMAL, 931 iwl_mvm_sta_iface_iterator, 932 &data); 933 return data.assoc; 934 } 935 936 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 937 struct ieee80211_vif *vif, 938 bool tdls, bool cmd_q) 939 { 940 struct iwl_fw_dbg_trigger_tlv *trigger; 941 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 942 unsigned int default_timeout = cmd_q ? 943 IWL_DEF_WD_TIMEOUT : 944 mvm->trans->trans_cfg->base_params->wd_timeout; 945 946 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 947 /* 948 * We can't know when the station is asleep or awake, so we 949 * must disable the queue hang detection. 950 */ 951 if (fw_has_capa(&mvm->fw->ucode_capa, 952 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 953 vif && vif->type == NL80211_IFTYPE_AP) 954 return IWL_WATCHDOG_DISABLED; 955 return iwlmvm_mod_params.tfd_q_hang_detect ? 956 default_timeout : IWL_WATCHDOG_DISABLED; 957 } 958 959 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 960 txq_timer = (void *)trigger->data; 961 962 if (tdls) 963 return le32_to_cpu(txq_timer->tdls); 964 965 if (cmd_q) 966 return le32_to_cpu(txq_timer->command_queue); 967 968 if (WARN_ON(!vif)) 969 return default_timeout; 970 971 switch (ieee80211_vif_type_p2p(vif)) { 972 case NL80211_IFTYPE_ADHOC: 973 return le32_to_cpu(txq_timer->ibss); 974 case NL80211_IFTYPE_STATION: 975 return le32_to_cpu(txq_timer->bss); 976 case NL80211_IFTYPE_AP: 977 return le32_to_cpu(txq_timer->softap); 978 case NL80211_IFTYPE_P2P_CLIENT: 979 return le32_to_cpu(txq_timer->p2p_client); 980 case NL80211_IFTYPE_P2P_GO: 981 return le32_to_cpu(txq_timer->p2p_go); 982 case NL80211_IFTYPE_P2P_DEVICE: 983 return le32_to_cpu(txq_timer->p2p_device); 984 case NL80211_IFTYPE_MONITOR: 985 return default_timeout; 986 default: 987 WARN_ON(1); 988 return mvm->trans->trans_cfg->base_params->wd_timeout; 989 } 990 } 991 992 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 993 const char *errmsg) 994 { 995 struct iwl_fw_dbg_trigger_tlv *trig; 996 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 997 998 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 999 FW_DBG_TRIGGER_MLME); 1000 if (!trig) 1001 goto out; 1002 1003 trig_mlme = (void *)trig->data; 1004 1005 if (trig_mlme->stop_connection_loss && 1006 --trig_mlme->stop_connection_loss) 1007 goto out; 1008 1009 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1010 1011 out: 1012 ieee80211_connection_loss(vif); 1013 } 1014 1015 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1016 struct ieee80211_vif *vif, 1017 const struct ieee80211_sta *sta, 1018 u16 tid) 1019 { 1020 struct iwl_fw_dbg_trigger_tlv *trig; 1021 struct iwl_fw_dbg_trigger_ba *ba_trig; 1022 1023 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1024 FW_DBG_TRIGGER_BA); 1025 if (!trig) 1026 return; 1027 1028 ba_trig = (void *)trig->data; 1029 1030 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1031 return; 1032 1033 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1034 "Frame from %pM timed out, tid %d", 1035 sta->addr, tid); 1036 } 1037 1038 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1039 { 1040 if (!elapsed) 1041 return 0; 1042 1043 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1044 } 1045 1046 static enum iwl_mvm_traffic_load 1047 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1048 { 1049 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1050 1051 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1052 return IWL_MVM_TRAFFIC_HIGH; 1053 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1054 return IWL_MVM_TRAFFIC_MEDIUM; 1055 1056 return IWL_MVM_TRAFFIC_LOW; 1057 } 1058 1059 struct iwl_mvm_tcm_iter_data { 1060 struct iwl_mvm *mvm; 1061 bool any_sent; 1062 }; 1063 1064 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1065 { 1066 struct iwl_mvm_tcm_iter_data *data = _data; 1067 struct iwl_mvm *mvm = data->mvm; 1068 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1069 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1070 1071 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1072 return; 1073 1074 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1075 1076 if (!mvm->tcm.result.change[mvmvif->id] && 1077 prev == low_latency) { 1078 iwl_mvm_update_quotas(mvm, false, NULL); 1079 return; 1080 } 1081 1082 if (prev != low_latency) { 1083 /* this sends traffic load and updates quota as well */ 1084 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1085 LOW_LATENCY_TRAFFIC); 1086 } else { 1087 iwl_mvm_update_quotas(mvm, false, NULL); 1088 } 1089 1090 data->any_sent = true; 1091 } 1092 1093 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1094 { 1095 struct iwl_mvm_tcm_iter_data data = { 1096 .mvm = mvm, 1097 .any_sent = false, 1098 }; 1099 1100 mutex_lock(&mvm->mutex); 1101 1102 ieee80211_iterate_active_interfaces( 1103 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1104 iwl_mvm_tcm_iter, &data); 1105 1106 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1107 iwl_mvm_config_scan(mvm); 1108 1109 mutex_unlock(&mvm->mutex); 1110 } 1111 1112 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1113 { 1114 struct iwl_mvm *mvm; 1115 struct iwl_mvm_vif *mvmvif; 1116 struct ieee80211_vif *vif; 1117 1118 mvmvif = container_of(wk, struct iwl_mvm_vif, 1119 uapsd_nonagg_detected_wk.work); 1120 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1121 mvm = mvmvif->mvm; 1122 1123 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1124 return; 1125 1126 /* remember that this AP is broken */ 1127 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1128 vif->bss_conf.bssid, ETH_ALEN); 1129 mvm->uapsd_noagg_bssid_write_idx++; 1130 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1131 mvm->uapsd_noagg_bssid_write_idx = 0; 1132 1133 iwl_mvm_connection_loss(mvm, vif, 1134 "AP isn't using AMPDU with uAPSD enabled"); 1135 } 1136 1137 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1138 struct ieee80211_vif *vif) 1139 { 1140 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1141 1142 if (vif->type != NL80211_IFTYPE_STATION) 1143 return; 1144 1145 if (!vif->bss_conf.assoc) 1146 return; 1147 1148 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1149 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1150 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1151 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1152 return; 1153 1154 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1155 return; 1156 1157 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1158 IWL_INFO(mvm, 1159 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1160 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1161 } 1162 1163 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1164 unsigned int elapsed, 1165 int mac) 1166 { 1167 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1168 u64 tpt; 1169 unsigned long rate; 1170 struct ieee80211_vif *vif; 1171 1172 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1173 1174 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1175 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1176 return; 1177 1178 if (iwl_mvm_has_new_rx_api(mvm)) { 1179 tpt = 8 * bytes; /* kbps */ 1180 do_div(tpt, elapsed); 1181 rate *= 1000; /* kbps */ 1182 if (tpt < 22 * rate / 100) 1183 return; 1184 } else { 1185 /* 1186 * the rate here is actually the threshold, in 100Kbps units, 1187 * so do the needed conversion from bytes to 100Kbps: 1188 * 100kb = bits / (100 * 1000), 1189 * 100kbps = 100kb / (msecs / 1000) == 1190 * (bits / (100 * 1000)) / (msecs / 1000) == 1191 * bits / (100 * msecs) 1192 */ 1193 tpt = (8 * bytes); 1194 do_div(tpt, elapsed * 100); 1195 if (tpt < rate) 1196 return; 1197 } 1198 1199 rcu_read_lock(); 1200 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1201 if (vif) 1202 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1203 rcu_read_unlock(); 1204 } 1205 1206 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1207 struct ieee80211_vif *vif) 1208 { 1209 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1210 u32 *band = _data; 1211 1212 if (!mvmvif->phy_ctxt) 1213 return; 1214 1215 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1216 } 1217 1218 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1219 unsigned long ts, 1220 bool handle_uapsd) 1221 { 1222 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1223 unsigned int uapsd_elapsed = 1224 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1225 u32 total_airtime = 0; 1226 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1227 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1228 int ac, mac, i; 1229 bool low_latency = false; 1230 enum iwl_mvm_traffic_load load, band_load; 1231 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1232 1233 if (handle_ll) 1234 mvm->tcm.ll_ts = ts; 1235 if (handle_uapsd) 1236 mvm->tcm.uapsd_nonagg_ts = ts; 1237 1238 mvm->tcm.result.elapsed = elapsed; 1239 1240 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1241 IEEE80211_IFACE_ITER_NORMAL, 1242 iwl_mvm_tcm_iterator, 1243 &band); 1244 1245 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1246 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1247 u32 vo_vi_pkts = 0; 1248 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1249 1250 total_airtime += airtime; 1251 band_airtime[band[mac]] += airtime; 1252 1253 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1254 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1255 mvm->tcm.result.load[mac] = load; 1256 mvm->tcm.result.airtime[mac] = airtime; 1257 1258 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1259 vo_vi_pkts += mdata->rx.pkts[ac] + 1260 mdata->tx.pkts[ac]; 1261 1262 /* enable immediately with enough packets but defer disabling */ 1263 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1264 mvm->tcm.result.low_latency[mac] = true; 1265 else if (handle_ll) 1266 mvm->tcm.result.low_latency[mac] = false; 1267 1268 if (handle_ll) { 1269 /* clear old data */ 1270 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1271 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1272 } 1273 low_latency |= mvm->tcm.result.low_latency[mac]; 1274 1275 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1276 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1277 mac); 1278 /* clear old data */ 1279 if (handle_uapsd) 1280 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1281 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1282 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1283 } 1284 1285 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1286 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1287 mvm->tcm.result.global_load = load; 1288 1289 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1290 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1291 mvm->tcm.result.band_load[i] = band_load; 1292 } 1293 1294 /* 1295 * If the current load isn't low we need to force re-evaluation 1296 * in the TCM period, so that we can return to low load if there 1297 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1298 * triggered by traffic). 1299 */ 1300 if (load != IWL_MVM_TRAFFIC_LOW) 1301 return MVM_TCM_PERIOD; 1302 /* 1303 * If low-latency is active we need to force re-evaluation after 1304 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1305 * when there's no traffic at all. 1306 */ 1307 if (low_latency) 1308 return MVM_LL_PERIOD; 1309 /* 1310 * Otherwise, we don't need to run the work struct because we're 1311 * in the default "idle" state - traffic indication is low (which 1312 * also covers the "no traffic" case) and low-latency is disabled 1313 * so there's no state that may need to be disabled when there's 1314 * no traffic at all. 1315 * 1316 * Note that this has no impact on the regular scheduling of the 1317 * updates triggered by traffic - those happen whenever one of the 1318 * two timeouts expire (if there's traffic at all.) 1319 */ 1320 return 0; 1321 } 1322 1323 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1324 { 1325 unsigned long ts = jiffies; 1326 bool handle_uapsd = 1327 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1328 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1329 1330 spin_lock(&mvm->tcm.lock); 1331 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1332 spin_unlock(&mvm->tcm.lock); 1333 return; 1334 } 1335 spin_unlock(&mvm->tcm.lock); 1336 1337 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1338 mutex_lock(&mvm->mutex); 1339 if (iwl_mvm_request_statistics(mvm, true)) 1340 handle_uapsd = false; 1341 mutex_unlock(&mvm->mutex); 1342 } 1343 1344 spin_lock(&mvm->tcm.lock); 1345 /* re-check if somebody else won the recheck race */ 1346 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1347 /* calculate statistics */ 1348 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1349 handle_uapsd); 1350 1351 /* the memset needs to be visible before the timestamp */ 1352 smp_mb(); 1353 mvm->tcm.ts = ts; 1354 if (work_delay) 1355 schedule_delayed_work(&mvm->tcm.work, work_delay); 1356 } 1357 spin_unlock(&mvm->tcm.lock); 1358 1359 iwl_mvm_tcm_results(mvm); 1360 } 1361 1362 void iwl_mvm_tcm_work(struct work_struct *work) 1363 { 1364 struct delayed_work *delayed_work = to_delayed_work(work); 1365 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1366 tcm.work); 1367 1368 iwl_mvm_recalc_tcm(mvm); 1369 } 1370 1371 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1372 { 1373 spin_lock_bh(&mvm->tcm.lock); 1374 mvm->tcm.paused = true; 1375 spin_unlock_bh(&mvm->tcm.lock); 1376 if (with_cancel) 1377 cancel_delayed_work_sync(&mvm->tcm.work); 1378 } 1379 1380 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1381 { 1382 int mac; 1383 bool low_latency = false; 1384 1385 spin_lock_bh(&mvm->tcm.lock); 1386 mvm->tcm.ts = jiffies; 1387 mvm->tcm.ll_ts = jiffies; 1388 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1389 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1390 1391 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1392 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1393 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1394 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1395 1396 if (mvm->tcm.result.low_latency[mac]) 1397 low_latency = true; 1398 } 1399 /* The TCM data needs to be reset before "paused" flag changes */ 1400 smp_mb(); 1401 mvm->tcm.paused = false; 1402 1403 /* 1404 * if the current load is not low or low latency is active, force 1405 * re-evaluation to cover the case of no traffic. 1406 */ 1407 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1408 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1409 else if (low_latency) 1410 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1411 1412 spin_unlock_bh(&mvm->tcm.lock); 1413 } 1414 1415 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1416 { 1417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1418 1419 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1420 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1421 } 1422 1423 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1424 { 1425 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1426 1427 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1428 } 1429 1430 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1431 { 1432 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1433 1434 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1435 mvm->trans->cfg->gp2_reg_addr) 1436 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1437 1438 return iwl_read_prph(mvm->trans, reg_addr); 1439 } 1440 1441 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1442 { 1443 bool ps_disabled; 1444 1445 lockdep_assert_held(&mvm->mutex); 1446 1447 /* Disable power save when reading GP2 */ 1448 ps_disabled = mvm->ps_disabled; 1449 if (!ps_disabled) { 1450 mvm->ps_disabled = true; 1451 iwl_mvm_power_update_device(mvm); 1452 } 1453 1454 *gp2 = iwl_mvm_get_systime(mvm); 1455 *boottime = ktime_get_boottime_ns(); 1456 1457 if (!ps_disabled) { 1458 mvm->ps_disabled = ps_disabled; 1459 iwl_mvm_power_update_device(mvm); 1460 } 1461 } 1462