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, 2018 - 2020 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved. 31 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 32 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 *****************************************************************************/ 62 #include <net/mac80211.h> 63 64 #include "iwl-debug.h" 65 #include "iwl-io.h" 66 #include "iwl-prph.h" 67 #include "iwl-csr.h" 68 #include "mvm.h" 69 #include "fw/api/rs.h" 70 71 /* 72 * Will return 0 even if the cmd failed when RFKILL is asserted unless 73 * CMD_WANT_SKB is set in cmd->flags. 74 */ 75 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 76 { 77 int ret; 78 79 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 80 if (WARN_ON(mvm->d3_test_active)) 81 return -EIO; 82 #endif 83 84 /* 85 * Synchronous commands from this op-mode must hold 86 * the mutex, this ensures we don't try to send two 87 * (or more) synchronous commands at a time. 88 */ 89 if (!(cmd->flags & CMD_ASYNC)) 90 lockdep_assert_held(&mvm->mutex); 91 92 ret = iwl_trans_send_cmd(mvm->trans, cmd); 93 94 /* 95 * If the caller wants the SKB, then don't hide any problems, the 96 * caller might access the response buffer which will be NULL if 97 * the command failed. 98 */ 99 if (cmd->flags & CMD_WANT_SKB) 100 return ret; 101 102 /* Silently ignore failures if RFKILL is asserted */ 103 if (!ret || ret == -ERFKILL) 104 return 0; 105 return ret; 106 } 107 108 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 109 u32 flags, u16 len, const void *data) 110 { 111 struct iwl_host_cmd cmd = { 112 .id = id, 113 .len = { len, }, 114 .data = { data, }, 115 .flags = flags, 116 }; 117 118 return iwl_mvm_send_cmd(mvm, &cmd); 119 } 120 121 /* 122 * We assume that the caller set the status to the success value 123 */ 124 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 125 u32 *status) 126 { 127 struct iwl_rx_packet *pkt; 128 struct iwl_cmd_response *resp; 129 int ret, resp_len; 130 131 lockdep_assert_held(&mvm->mutex); 132 133 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 134 if (WARN_ON(mvm->d3_test_active)) 135 return -EIO; 136 #endif 137 138 /* 139 * Only synchronous commands can wait for status, 140 * we use WANT_SKB so the caller can't. 141 */ 142 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 143 "cmd flags %x", cmd->flags)) 144 return -EINVAL; 145 146 cmd->flags |= CMD_WANT_SKB; 147 148 ret = iwl_trans_send_cmd(mvm->trans, cmd); 149 if (ret == -ERFKILL) { 150 /* 151 * The command failed because of RFKILL, don't update 152 * the status, leave it as success and return 0. 153 */ 154 return 0; 155 } else if (ret) { 156 return ret; 157 } 158 159 pkt = cmd->resp_pkt; 160 161 resp_len = iwl_rx_packet_payload_len(pkt); 162 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 163 ret = -EIO; 164 goto out_free_resp; 165 } 166 167 resp = (void *)pkt->data; 168 *status = le32_to_cpu(resp->status); 169 out_free_resp: 170 iwl_free_resp(cmd); 171 return ret; 172 } 173 174 /* 175 * We assume that the caller set the status to the sucess value 176 */ 177 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 178 const void *data, u32 *status) 179 { 180 struct iwl_host_cmd cmd = { 181 .id = id, 182 .len = { len, }, 183 .data = { data, }, 184 }; 185 186 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 187 } 188 189 #define IWL_DECLARE_RATE_INFO(r) \ 190 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 191 192 /* 193 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 194 */ 195 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 196 IWL_DECLARE_RATE_INFO(1), 197 IWL_DECLARE_RATE_INFO(2), 198 IWL_DECLARE_RATE_INFO(5), 199 IWL_DECLARE_RATE_INFO(11), 200 IWL_DECLARE_RATE_INFO(6), 201 IWL_DECLARE_RATE_INFO(9), 202 IWL_DECLARE_RATE_INFO(12), 203 IWL_DECLARE_RATE_INFO(18), 204 IWL_DECLARE_RATE_INFO(24), 205 IWL_DECLARE_RATE_INFO(36), 206 IWL_DECLARE_RATE_INFO(48), 207 IWL_DECLARE_RATE_INFO(54), 208 }; 209 210 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 211 enum nl80211_band band) 212 { 213 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 214 int idx; 215 int band_offset = 0; 216 217 /* Legacy rate format, search for match in table */ 218 if (band != NL80211_BAND_2GHZ) 219 band_offset = IWL_FIRST_OFDM_RATE; 220 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 221 if (fw_rate_idx_to_plcp[idx] == rate) 222 return idx - band_offset; 223 224 return -1; 225 } 226 227 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 228 { 229 /* Get PLCP rate for tx_cmd->rate_n_flags */ 230 return fw_rate_idx_to_plcp[rate_idx]; 231 } 232 233 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 234 { 235 static const u8 mac80211_ac_to_ucode_ac[] = { 236 AC_VO, 237 AC_VI, 238 AC_BE, 239 AC_BK 240 }; 241 242 return mac80211_ac_to_ucode_ac[ac]; 243 } 244 245 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 246 { 247 struct iwl_rx_packet *pkt = rxb_addr(rxb); 248 struct iwl_error_resp *err_resp = (void *)pkt->data; 249 250 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 251 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 252 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 253 le16_to_cpu(err_resp->bad_cmd_seq_num), 254 le32_to_cpu(err_resp->error_service)); 255 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 256 le64_to_cpu(err_resp->timestamp)); 257 } 258 259 /* 260 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 261 * The parameter should also be a combination of ANT_[ABC]. 262 */ 263 u8 first_antenna(u8 mask) 264 { 265 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 266 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 267 return BIT(0); 268 return BIT(ffs(mask) - 1); 269 } 270 271 /* 272 * Toggles between TX antennas to send the probe request on. 273 * Receives the bitmask of valid TX antennas and the *index* used 274 * for the last TX, and returns the next valid *index* to use. 275 * In order to set it in the tx_cmd, must do BIT(idx). 276 */ 277 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 278 { 279 u8 ind = last_idx; 280 int i; 281 282 for (i = 0; i < MAX_ANT_NUM; i++) { 283 ind = (ind + 1) % MAX_ANT_NUM; 284 if (valid & BIT(ind)) 285 return ind; 286 } 287 288 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 289 return last_idx; 290 } 291 292 #define FW_SYSASSERT_CPU_MASK 0xf0000000 293 static const struct { 294 const char *name; 295 u8 num; 296 } advanced_lookup[] = { 297 { "NMI_INTERRUPT_WDG", 0x34 }, 298 { "SYSASSERT", 0x35 }, 299 { "UCODE_VERSION_MISMATCH", 0x37 }, 300 { "BAD_COMMAND", 0x38 }, 301 { "BAD_COMMAND", 0x39 }, 302 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 303 { "FATAL_ERROR", 0x3D }, 304 { "NMI_TRM_HW_ERR", 0x46 }, 305 { "NMI_INTERRUPT_TRM", 0x4C }, 306 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 307 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 308 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 309 { "NMI_INTERRUPT_HOST", 0x66 }, 310 { "NMI_INTERRUPT_LMAC_FATAL", 0x70 }, 311 { "NMI_INTERRUPT_UMAC_FATAL", 0x71 }, 312 { "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 }, 313 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 314 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 315 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 316 { "ADVANCED_SYSASSERT", 0 }, 317 }; 318 319 static const char *desc_lookup(u32 num) 320 { 321 int i; 322 323 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 324 if (advanced_lookup[i].num == (num & ~FW_SYSASSERT_CPU_MASK)) 325 return advanced_lookup[i].name; 326 327 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 328 return advanced_lookup[i].name; 329 } 330 331 /* 332 * Note: This structure is read from the device with IO accesses, 333 * and the reading already does the endian conversion. As it is 334 * read with u32-sized accesses, any members with a different size 335 * need to be ordered correctly though! 336 */ 337 struct iwl_error_event_table_v1 { 338 u32 valid; /* (nonzero) valid, (0) log is empty */ 339 u32 error_id; /* type of error */ 340 u32 pc; /* program counter */ 341 u32 blink1; /* branch link */ 342 u32 blink2; /* branch link */ 343 u32 ilink1; /* interrupt link */ 344 u32 ilink2; /* interrupt link */ 345 u32 data1; /* error-specific data */ 346 u32 data2; /* error-specific data */ 347 u32 data3; /* error-specific data */ 348 u32 bcon_time; /* beacon timer */ 349 u32 tsf_low; /* network timestamp function timer */ 350 u32 tsf_hi; /* network timestamp function timer */ 351 u32 gp1; /* GP1 timer register */ 352 u32 gp2; /* GP2 timer register */ 353 u32 gp3; /* GP3 timer register */ 354 u32 ucode_ver; /* uCode version */ 355 u32 hw_ver; /* HW Silicon version */ 356 u32 brd_ver; /* HW board version */ 357 u32 log_pc; /* log program counter */ 358 u32 frame_ptr; /* frame pointer */ 359 u32 stack_ptr; /* stack pointer */ 360 u32 hcmd; /* last host command header */ 361 u32 isr0; /* isr status register LMPM_NIC_ISR0: 362 * rxtx_flag */ 363 u32 isr1; /* isr status register LMPM_NIC_ISR1: 364 * host_flag */ 365 u32 isr2; /* isr status register LMPM_NIC_ISR2: 366 * enc_flag */ 367 u32 isr3; /* isr status register LMPM_NIC_ISR3: 368 * time_flag */ 369 u32 isr4; /* isr status register LMPM_NIC_ISR4: 370 * wico interrupt */ 371 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 372 u32 wait_event; /* wait event() caller address */ 373 u32 l2p_control; /* L2pControlField */ 374 u32 l2p_duration; /* L2pDurationField */ 375 u32 l2p_mhvalid; /* L2pMhValidBits */ 376 u32 l2p_addr_match; /* L2pAddrMatchStat */ 377 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 378 * (LMPM_PMG_SEL) */ 379 u32 u_timestamp; /* indicate when the date and time of the 380 * compilation */ 381 u32 flow_handler; /* FH read/write pointers, RX credit */ 382 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 383 384 struct iwl_error_event_table { 385 u32 valid; /* (nonzero) valid, (0) log is empty */ 386 u32 error_id; /* type of error */ 387 u32 trm_hw_status0; /* TRM HW status */ 388 u32 trm_hw_status1; /* TRM HW status */ 389 u32 blink2; /* branch link */ 390 u32 ilink1; /* interrupt link */ 391 u32 ilink2; /* interrupt link */ 392 u32 data1; /* error-specific data */ 393 u32 data2; /* error-specific data */ 394 u32 data3; /* error-specific data */ 395 u32 bcon_time; /* beacon timer */ 396 u32 tsf_low; /* network timestamp function timer */ 397 u32 tsf_hi; /* network timestamp function timer */ 398 u32 gp1; /* GP1 timer register */ 399 u32 gp2; /* GP2 timer register */ 400 u32 fw_rev_type; /* firmware revision type */ 401 u32 major; /* uCode version major */ 402 u32 minor; /* uCode version minor */ 403 u32 hw_ver; /* HW Silicon version */ 404 u32 brd_ver; /* HW board version */ 405 u32 log_pc; /* log program counter */ 406 u32 frame_ptr; /* frame pointer */ 407 u32 stack_ptr; /* stack pointer */ 408 u32 hcmd; /* last host command header */ 409 u32 isr0; /* isr status register LMPM_NIC_ISR0: 410 * rxtx_flag */ 411 u32 isr1; /* isr status register LMPM_NIC_ISR1: 412 * host_flag */ 413 u32 isr2; /* isr status register LMPM_NIC_ISR2: 414 * enc_flag */ 415 u32 isr3; /* isr status register LMPM_NIC_ISR3: 416 * time_flag */ 417 u32 isr4; /* isr status register LMPM_NIC_ISR4: 418 * wico interrupt */ 419 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 420 u32 wait_event; /* wait event() caller address */ 421 u32 l2p_control; /* L2pControlField */ 422 u32 l2p_duration; /* L2pDurationField */ 423 u32 l2p_mhvalid; /* L2pMhValidBits */ 424 u32 l2p_addr_match; /* L2pAddrMatchStat */ 425 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 426 * (LMPM_PMG_SEL) */ 427 u32 u_timestamp; /* indicate when the date and time of the 428 * compilation */ 429 u32 flow_handler; /* FH read/write pointers, RX credit */ 430 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 431 432 /* 433 * UMAC error struct - relevant starting from family 8000 chip. 434 * Note: This structure is read from the device with IO accesses, 435 * and the reading already does the endian conversion. As it is 436 * read with u32-sized accesses, any members with a different size 437 * need to be ordered correctly though! 438 */ 439 struct iwl_umac_error_event_table { 440 u32 valid; /* (nonzero) valid, (0) log is empty */ 441 u32 error_id; /* type of error */ 442 u32 blink1; /* branch link */ 443 u32 blink2; /* branch link */ 444 u32 ilink1; /* interrupt link */ 445 u32 ilink2; /* interrupt link */ 446 u32 data1; /* error-specific data */ 447 u32 data2; /* error-specific data */ 448 u32 data3; /* error-specific data */ 449 u32 umac_major; 450 u32 umac_minor; 451 u32 frame_pointer; /* core register 27*/ 452 u32 stack_pointer; /* core register 28 */ 453 u32 cmd_header; /* latest host cmd sent to UMAC */ 454 u32 nic_isr_pref; /* ISR status register */ 455 } __packed; 456 457 #define ERROR_START_OFFSET (1 * sizeof(u32)) 458 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 459 460 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 461 { 462 struct iwl_trans *trans = mvm->trans; 463 struct iwl_umac_error_event_table table; 464 u32 base = mvm->trans->dbg.umac_error_event_table; 465 466 if (!mvm->support_umac_log && 467 !(mvm->trans->dbg.error_event_table_tlv_status & 468 IWL_ERROR_EVENT_TABLE_UMAC)) 469 return; 470 471 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 472 473 if (table.valid) 474 mvm->fwrt.dump.umac_err_id = table.error_id; 475 476 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 477 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 478 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 479 mvm->status, table.valid); 480 } 481 482 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 483 desc_lookup(table.error_id)); 484 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 485 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 486 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 487 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 488 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 489 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 490 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 491 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 492 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 493 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 494 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 495 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 496 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 497 } 498 499 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 500 { 501 struct iwl_trans *trans = mvm->trans; 502 struct iwl_error_event_table table; 503 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num]; 504 505 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 506 if (!base) 507 base = mvm->fw->init_errlog_ptr; 508 } else { 509 if (!base) 510 base = mvm->fw->inst_errlog_ptr; 511 } 512 513 if (base < 0x400000) { 514 IWL_ERR(mvm, 515 "Not valid error log pointer 0x%08X for %s uCode\n", 516 base, 517 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 518 ? "Init" : "RT"); 519 return; 520 } 521 522 /* check if there is a HW error */ 523 val = iwl_trans_read_mem32(trans, base); 524 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 525 int err; 526 527 IWL_ERR(trans, "HW error, resetting before reading\n"); 528 529 /* reset the device */ 530 iwl_trans_sw_reset(trans); 531 532 err = iwl_finish_nic_init(trans, trans->trans_cfg); 533 if (err) 534 return; 535 } 536 537 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 538 539 if (table.valid) 540 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 541 542 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 543 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 544 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 545 mvm->status, table.valid); 546 } 547 548 /* Do not change this output - scripts rely on it */ 549 550 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 551 552 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 553 desc_lookup(table.error_id)); 554 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 555 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 556 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 557 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 558 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 559 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 560 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 561 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 562 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 563 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 564 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 565 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 566 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 567 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 568 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 569 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 570 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 571 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 572 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 573 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 574 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 575 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 576 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 577 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 578 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 579 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 580 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 581 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 582 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 583 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 584 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 585 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 586 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 587 } 588 589 static void iwl_mvm_dump_iml_error_log(struct iwl_mvm *mvm) 590 { 591 struct iwl_trans *trans = mvm->trans; 592 u32 error; 593 594 error = iwl_read_umac_prph(trans, UMAG_SB_CPU_2_STATUS); 595 596 IWL_ERR(trans, "IML/ROM dump:\n"); 597 598 if (error & 0xFFFF0000) 599 IWL_ERR(trans, "IML/ROM SYSASSERT:\n"); 600 601 IWL_ERR(mvm, "0x%08X | IML/ROM error/state\n", error); 602 IWL_ERR(mvm, "0x%08X | IML/ROM data1\n", 603 iwl_read_umac_prph(trans, UMAG_SB_CPU_1_STATUS)); 604 } 605 606 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 607 { 608 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 609 IWL_ERR(mvm, 610 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 611 return; 612 } 613 614 iwl_mvm_dump_lmac_error_log(mvm, 0); 615 616 if (mvm->trans->dbg.lmac_error_event_table[1]) 617 iwl_mvm_dump_lmac_error_log(mvm, 1); 618 619 iwl_mvm_dump_umac_error_log(mvm); 620 621 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) 622 iwl_mvm_dump_iml_error_log(mvm); 623 624 iwl_fw_error_print_fseq_regs(&mvm->fwrt); 625 } 626 627 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 628 int tid, int frame_limit, u16 ssn) 629 { 630 struct iwl_scd_txq_cfg_cmd cmd = { 631 .scd_queue = queue, 632 .action = SCD_CFG_ENABLE_QUEUE, 633 .window = frame_limit, 634 .sta_id = sta_id, 635 .ssn = cpu_to_le16(ssn), 636 .tx_fifo = fifo, 637 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 638 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 639 .tid = tid, 640 }; 641 int ret; 642 643 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 644 return -EINVAL; 645 646 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 647 "Trying to reconfig unallocated queue %d\n", queue)) 648 return -ENXIO; 649 650 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 651 652 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 653 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 654 queue, fifo, ret); 655 656 return ret; 657 } 658 659 /** 660 * iwl_mvm_send_lq_cmd() - Send link quality command 661 * @sync: This command can be sent synchronously. 662 * 663 * The link quality command is sent as the last step of station creation. 664 * This is the special case in which init is set and we call a callback in 665 * this case to clear the state indicating that station creation is in 666 * progress. 667 */ 668 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 669 { 670 struct iwl_host_cmd cmd = { 671 .id = LQ_CMD, 672 .len = { sizeof(struct iwl_lq_cmd), }, 673 .flags = CMD_ASYNC, 674 .data = { lq, }, 675 }; 676 677 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 678 iwl_mvm_has_tlc_offload(mvm))) 679 return -EINVAL; 680 681 return iwl_mvm_send_cmd(mvm, &cmd); 682 } 683 684 /** 685 * iwl_mvm_update_smps - Get a request to change the SMPS mode 686 * @req_type: The part of the driver who call for a change. 687 * @smps_requests: The request to change the SMPS mode. 688 * 689 * Get a requst to change the SMPS mode, 690 * and change it according to all other requests in the driver. 691 */ 692 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 693 enum iwl_mvm_smps_type_request req_type, 694 enum ieee80211_smps_mode smps_request) 695 { 696 struct iwl_mvm_vif *mvmvif; 697 enum ieee80211_smps_mode smps_mode; 698 int i; 699 700 lockdep_assert_held(&mvm->mutex); 701 702 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 703 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 704 return; 705 706 if (vif->type == NL80211_IFTYPE_AP) 707 smps_mode = IEEE80211_SMPS_OFF; 708 else 709 smps_mode = IEEE80211_SMPS_AUTOMATIC; 710 711 mvmvif = iwl_mvm_vif_from_mac80211(vif); 712 mvmvif->smps_requests[req_type] = smps_request; 713 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 714 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 715 smps_mode = IEEE80211_SMPS_STATIC; 716 break; 717 } 718 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 719 smps_mode = IEEE80211_SMPS_DYNAMIC; 720 } 721 722 ieee80211_request_smps(vif, smps_mode); 723 } 724 725 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 726 { 727 struct iwl_statistics_cmd scmd = { 728 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 729 }; 730 struct iwl_host_cmd cmd = { 731 .id = STATISTICS_CMD, 732 .len[0] = sizeof(scmd), 733 .data[0] = &scmd, 734 .flags = CMD_WANT_SKB, 735 }; 736 int ret; 737 738 ret = iwl_mvm_send_cmd(mvm, &cmd); 739 if (ret) 740 return ret; 741 742 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 743 iwl_free_resp(&cmd); 744 745 if (clear) 746 iwl_mvm_accu_radio_stats(mvm); 747 748 return 0; 749 } 750 751 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 752 { 753 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 754 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 755 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 756 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 757 } 758 759 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 760 struct ieee80211_vif *vif) 761 { 762 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 763 bool *result = _data; 764 int i; 765 766 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 767 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 768 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 769 *result = false; 770 } 771 } 772 773 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 774 { 775 bool result = true; 776 777 lockdep_assert_held(&mvm->mutex); 778 779 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 780 return false; 781 782 if (mvm->cfg->rx_with_siso_diversity) 783 return false; 784 785 ieee80211_iterate_active_interfaces_atomic( 786 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 787 iwl_mvm_diversity_iter, &result); 788 789 return result; 790 } 791 792 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 793 bool low_latency, u16 mac_id) 794 { 795 struct iwl_mac_low_latency_cmd cmd = { 796 .mac_id = cpu_to_le32(mac_id) 797 }; 798 799 if (!fw_has_capa(&mvm->fw->ucode_capa, 800 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 801 return; 802 803 if (low_latency) { 804 /* currently we don't care about the direction */ 805 cmd.low_latency_rx = 1; 806 cmd.low_latency_tx = 1; 807 } 808 809 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 810 MAC_CONF_GROUP, 0), 811 0, sizeof(cmd), &cmd)) 812 IWL_ERR(mvm, "Failed to send low latency command\n"); 813 } 814 815 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 816 bool low_latency, 817 enum iwl_mvm_low_latency_cause cause) 818 { 819 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 820 int res; 821 bool prev; 822 823 lockdep_assert_held(&mvm->mutex); 824 825 prev = iwl_mvm_vif_low_latency(mvmvif); 826 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 827 828 low_latency = iwl_mvm_vif_low_latency(mvmvif); 829 830 if (low_latency == prev) 831 return 0; 832 833 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 834 835 res = iwl_mvm_update_quotas(mvm, false, NULL); 836 if (res) 837 return res; 838 839 iwl_mvm_bt_coex_vif_change(mvm); 840 841 return iwl_mvm_power_update_mac(mvm); 842 } 843 844 struct iwl_mvm_low_latency_iter { 845 bool result; 846 bool result_per_band[NUM_NL80211_BANDS]; 847 }; 848 849 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 850 { 851 struct iwl_mvm_low_latency_iter *result = _data; 852 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 853 enum nl80211_band band; 854 855 if (iwl_mvm_vif_low_latency(mvmvif)) { 856 result->result = true; 857 858 if (!mvmvif->phy_ctxt) 859 return; 860 861 band = mvmvif->phy_ctxt->channel->band; 862 result->result_per_band[band] = true; 863 } 864 } 865 866 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 867 { 868 struct iwl_mvm_low_latency_iter data = {}; 869 870 ieee80211_iterate_active_interfaces_atomic( 871 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 872 iwl_mvm_ll_iter, &data); 873 874 return data.result; 875 } 876 877 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 878 { 879 struct iwl_mvm_low_latency_iter data = {}; 880 881 ieee80211_iterate_active_interfaces_atomic( 882 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 883 iwl_mvm_ll_iter, &data); 884 885 return data.result_per_band[band]; 886 } 887 888 struct iwl_bss_iter_data { 889 struct ieee80211_vif *vif; 890 bool error; 891 }; 892 893 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 894 struct ieee80211_vif *vif) 895 { 896 struct iwl_bss_iter_data *data = _data; 897 898 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 899 return; 900 901 if (data->vif) { 902 data->error = true; 903 return; 904 } 905 906 data->vif = vif; 907 } 908 909 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 910 { 911 struct iwl_bss_iter_data bss_iter_data = {}; 912 913 ieee80211_iterate_active_interfaces_atomic( 914 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 915 iwl_mvm_bss_iface_iterator, &bss_iter_data); 916 917 if (bss_iter_data.error) { 918 IWL_ERR(mvm, "More than one managed interface active!\n"); 919 return ERR_PTR(-EINVAL); 920 } 921 922 return bss_iter_data.vif; 923 } 924 925 struct iwl_sta_iter_data { 926 bool assoc; 927 }; 928 929 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 930 struct ieee80211_vif *vif) 931 { 932 struct iwl_sta_iter_data *data = _data; 933 934 if (vif->type != NL80211_IFTYPE_STATION) 935 return; 936 937 if (vif->bss_conf.assoc) 938 data->assoc = true; 939 } 940 941 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 942 { 943 struct iwl_sta_iter_data data = { 944 .assoc = false, 945 }; 946 947 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 948 IEEE80211_IFACE_ITER_NORMAL, 949 iwl_mvm_sta_iface_iterator, 950 &data); 951 return data.assoc; 952 } 953 954 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 955 struct ieee80211_vif *vif, 956 bool tdls, bool cmd_q) 957 { 958 struct iwl_fw_dbg_trigger_tlv *trigger; 959 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 960 unsigned int default_timeout = cmd_q ? 961 IWL_DEF_WD_TIMEOUT : 962 mvm->trans->trans_cfg->base_params->wd_timeout; 963 964 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 965 /* 966 * We can't know when the station is asleep or awake, so we 967 * must disable the queue hang detection. 968 */ 969 if (fw_has_capa(&mvm->fw->ucode_capa, 970 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 971 vif && vif->type == NL80211_IFTYPE_AP) 972 return IWL_WATCHDOG_DISABLED; 973 return default_timeout; 974 } 975 976 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 977 txq_timer = (void *)trigger->data; 978 979 if (tdls) 980 return le32_to_cpu(txq_timer->tdls); 981 982 if (cmd_q) 983 return le32_to_cpu(txq_timer->command_queue); 984 985 if (WARN_ON(!vif)) 986 return default_timeout; 987 988 switch (ieee80211_vif_type_p2p(vif)) { 989 case NL80211_IFTYPE_ADHOC: 990 return le32_to_cpu(txq_timer->ibss); 991 case NL80211_IFTYPE_STATION: 992 return le32_to_cpu(txq_timer->bss); 993 case NL80211_IFTYPE_AP: 994 return le32_to_cpu(txq_timer->softap); 995 case NL80211_IFTYPE_P2P_CLIENT: 996 return le32_to_cpu(txq_timer->p2p_client); 997 case NL80211_IFTYPE_P2P_GO: 998 return le32_to_cpu(txq_timer->p2p_go); 999 case NL80211_IFTYPE_P2P_DEVICE: 1000 return le32_to_cpu(txq_timer->p2p_device); 1001 case NL80211_IFTYPE_MONITOR: 1002 return default_timeout; 1003 default: 1004 WARN_ON(1); 1005 return mvm->trans->trans_cfg->base_params->wd_timeout; 1006 } 1007 } 1008 1009 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1010 const char *errmsg) 1011 { 1012 struct iwl_fw_dbg_trigger_tlv *trig; 1013 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 1014 1015 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1016 FW_DBG_TRIGGER_MLME); 1017 if (!trig) 1018 goto out; 1019 1020 trig_mlme = (void *)trig->data; 1021 1022 if (trig_mlme->stop_connection_loss && 1023 --trig_mlme->stop_connection_loss) 1024 goto out; 1025 1026 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1027 1028 out: 1029 ieee80211_connection_loss(vif); 1030 } 1031 1032 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1033 struct ieee80211_vif *vif, 1034 const struct ieee80211_sta *sta, 1035 u16 tid) 1036 { 1037 struct iwl_fw_dbg_trigger_tlv *trig; 1038 struct iwl_fw_dbg_trigger_ba *ba_trig; 1039 1040 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1041 FW_DBG_TRIGGER_BA); 1042 if (!trig) 1043 return; 1044 1045 ba_trig = (void *)trig->data; 1046 1047 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1048 return; 1049 1050 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1051 "Frame from %pM timed out, tid %d", 1052 sta->addr, tid); 1053 } 1054 1055 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1056 { 1057 if (!elapsed) 1058 return 0; 1059 1060 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1061 } 1062 1063 static enum iwl_mvm_traffic_load 1064 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1065 { 1066 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1067 1068 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1069 return IWL_MVM_TRAFFIC_HIGH; 1070 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1071 return IWL_MVM_TRAFFIC_MEDIUM; 1072 1073 return IWL_MVM_TRAFFIC_LOW; 1074 } 1075 1076 struct iwl_mvm_tcm_iter_data { 1077 struct iwl_mvm *mvm; 1078 bool any_sent; 1079 }; 1080 1081 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1082 { 1083 struct iwl_mvm_tcm_iter_data *data = _data; 1084 struct iwl_mvm *mvm = data->mvm; 1085 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1086 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1087 1088 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1089 return; 1090 1091 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1092 1093 if (!mvm->tcm.result.change[mvmvif->id] && 1094 prev == low_latency) { 1095 iwl_mvm_update_quotas(mvm, false, NULL); 1096 return; 1097 } 1098 1099 if (prev != low_latency) { 1100 /* this sends traffic load and updates quota as well */ 1101 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1102 LOW_LATENCY_TRAFFIC); 1103 } else { 1104 iwl_mvm_update_quotas(mvm, false, NULL); 1105 } 1106 1107 data->any_sent = true; 1108 } 1109 1110 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1111 { 1112 struct iwl_mvm_tcm_iter_data data = { 1113 .mvm = mvm, 1114 .any_sent = false, 1115 }; 1116 1117 mutex_lock(&mvm->mutex); 1118 1119 ieee80211_iterate_active_interfaces( 1120 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1121 iwl_mvm_tcm_iter, &data); 1122 1123 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1124 iwl_mvm_config_scan(mvm); 1125 1126 mutex_unlock(&mvm->mutex); 1127 } 1128 1129 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1130 { 1131 struct iwl_mvm *mvm; 1132 struct iwl_mvm_vif *mvmvif; 1133 struct ieee80211_vif *vif; 1134 1135 mvmvif = container_of(wk, struct iwl_mvm_vif, 1136 uapsd_nonagg_detected_wk.work); 1137 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1138 mvm = mvmvif->mvm; 1139 1140 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1141 return; 1142 1143 /* remember that this AP is broken */ 1144 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1145 vif->bss_conf.bssid, ETH_ALEN); 1146 mvm->uapsd_noagg_bssid_write_idx++; 1147 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1148 mvm->uapsd_noagg_bssid_write_idx = 0; 1149 1150 iwl_mvm_connection_loss(mvm, vif, 1151 "AP isn't using AMPDU with uAPSD enabled"); 1152 } 1153 1154 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1155 struct ieee80211_vif *vif) 1156 { 1157 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1158 1159 if (vif->type != NL80211_IFTYPE_STATION) 1160 return; 1161 1162 if (!vif->bss_conf.assoc) 1163 return; 1164 1165 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1166 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1167 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1168 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1169 return; 1170 1171 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1172 return; 1173 1174 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1175 IWL_INFO(mvm, 1176 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1177 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1178 } 1179 1180 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1181 unsigned int elapsed, 1182 int mac) 1183 { 1184 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1185 u64 tpt; 1186 unsigned long rate; 1187 struct ieee80211_vif *vif; 1188 1189 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1190 1191 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1192 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1193 return; 1194 1195 if (iwl_mvm_has_new_rx_api(mvm)) { 1196 tpt = 8 * bytes; /* kbps */ 1197 do_div(tpt, elapsed); 1198 rate *= 1000; /* kbps */ 1199 if (tpt < 22 * rate / 100) 1200 return; 1201 } else { 1202 /* 1203 * the rate here is actually the threshold, in 100Kbps units, 1204 * so do the needed conversion from bytes to 100Kbps: 1205 * 100kb = bits / (100 * 1000), 1206 * 100kbps = 100kb / (msecs / 1000) == 1207 * (bits / (100 * 1000)) / (msecs / 1000) == 1208 * bits / (100 * msecs) 1209 */ 1210 tpt = (8 * bytes); 1211 do_div(tpt, elapsed * 100); 1212 if (tpt < rate) 1213 return; 1214 } 1215 1216 rcu_read_lock(); 1217 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1218 if (vif) 1219 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1220 rcu_read_unlock(); 1221 } 1222 1223 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1224 struct ieee80211_vif *vif) 1225 { 1226 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1227 u32 *band = _data; 1228 1229 if (!mvmvif->phy_ctxt) 1230 return; 1231 1232 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1233 } 1234 1235 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1236 unsigned long ts, 1237 bool handle_uapsd) 1238 { 1239 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1240 unsigned int uapsd_elapsed = 1241 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1242 u32 total_airtime = 0; 1243 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1244 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1245 int ac, mac, i; 1246 bool low_latency = false; 1247 enum iwl_mvm_traffic_load load, band_load; 1248 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1249 1250 if (handle_ll) 1251 mvm->tcm.ll_ts = ts; 1252 if (handle_uapsd) 1253 mvm->tcm.uapsd_nonagg_ts = ts; 1254 1255 mvm->tcm.result.elapsed = elapsed; 1256 1257 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1258 IEEE80211_IFACE_ITER_NORMAL, 1259 iwl_mvm_tcm_iterator, 1260 &band); 1261 1262 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1263 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1264 u32 vo_vi_pkts = 0; 1265 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1266 1267 total_airtime += airtime; 1268 band_airtime[band[mac]] += airtime; 1269 1270 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1271 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1272 mvm->tcm.result.load[mac] = load; 1273 mvm->tcm.result.airtime[mac] = airtime; 1274 1275 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1276 vo_vi_pkts += mdata->rx.pkts[ac] + 1277 mdata->tx.pkts[ac]; 1278 1279 /* enable immediately with enough packets but defer disabling */ 1280 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1281 mvm->tcm.result.low_latency[mac] = true; 1282 else if (handle_ll) 1283 mvm->tcm.result.low_latency[mac] = false; 1284 1285 if (handle_ll) { 1286 /* clear old data */ 1287 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1288 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1289 } 1290 low_latency |= mvm->tcm.result.low_latency[mac]; 1291 1292 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1293 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1294 mac); 1295 /* clear old data */ 1296 if (handle_uapsd) 1297 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1298 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1299 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1300 } 1301 1302 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1303 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1304 mvm->tcm.result.global_load = load; 1305 1306 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1307 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1308 mvm->tcm.result.band_load[i] = band_load; 1309 } 1310 1311 /* 1312 * If the current load isn't low we need to force re-evaluation 1313 * in the TCM period, so that we can return to low load if there 1314 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1315 * triggered by traffic). 1316 */ 1317 if (load != IWL_MVM_TRAFFIC_LOW) 1318 return MVM_TCM_PERIOD; 1319 /* 1320 * If low-latency is active we need to force re-evaluation after 1321 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1322 * when there's no traffic at all. 1323 */ 1324 if (low_latency) 1325 return MVM_LL_PERIOD; 1326 /* 1327 * Otherwise, we don't need to run the work struct because we're 1328 * in the default "idle" state - traffic indication is low (which 1329 * also covers the "no traffic" case) and low-latency is disabled 1330 * so there's no state that may need to be disabled when there's 1331 * no traffic at all. 1332 * 1333 * Note that this has no impact on the regular scheduling of the 1334 * updates triggered by traffic - those happen whenever one of the 1335 * two timeouts expire (if there's traffic at all.) 1336 */ 1337 return 0; 1338 } 1339 1340 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1341 { 1342 unsigned long ts = jiffies; 1343 bool handle_uapsd = 1344 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1345 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1346 1347 spin_lock(&mvm->tcm.lock); 1348 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1349 spin_unlock(&mvm->tcm.lock); 1350 return; 1351 } 1352 spin_unlock(&mvm->tcm.lock); 1353 1354 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1355 mutex_lock(&mvm->mutex); 1356 if (iwl_mvm_request_statistics(mvm, true)) 1357 handle_uapsd = false; 1358 mutex_unlock(&mvm->mutex); 1359 } 1360 1361 spin_lock(&mvm->tcm.lock); 1362 /* re-check if somebody else won the recheck race */ 1363 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1364 /* calculate statistics */ 1365 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1366 handle_uapsd); 1367 1368 /* the memset needs to be visible before the timestamp */ 1369 smp_mb(); 1370 mvm->tcm.ts = ts; 1371 if (work_delay) 1372 schedule_delayed_work(&mvm->tcm.work, work_delay); 1373 } 1374 spin_unlock(&mvm->tcm.lock); 1375 1376 iwl_mvm_tcm_results(mvm); 1377 } 1378 1379 void iwl_mvm_tcm_work(struct work_struct *work) 1380 { 1381 struct delayed_work *delayed_work = to_delayed_work(work); 1382 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1383 tcm.work); 1384 1385 iwl_mvm_recalc_tcm(mvm); 1386 } 1387 1388 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1389 { 1390 spin_lock_bh(&mvm->tcm.lock); 1391 mvm->tcm.paused = true; 1392 spin_unlock_bh(&mvm->tcm.lock); 1393 if (with_cancel) 1394 cancel_delayed_work_sync(&mvm->tcm.work); 1395 } 1396 1397 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1398 { 1399 int mac; 1400 bool low_latency = false; 1401 1402 spin_lock_bh(&mvm->tcm.lock); 1403 mvm->tcm.ts = jiffies; 1404 mvm->tcm.ll_ts = jiffies; 1405 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1406 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1407 1408 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1409 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1410 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1411 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1412 1413 if (mvm->tcm.result.low_latency[mac]) 1414 low_latency = true; 1415 } 1416 /* The TCM data needs to be reset before "paused" flag changes */ 1417 smp_mb(); 1418 mvm->tcm.paused = false; 1419 1420 /* 1421 * if the current load is not low or low latency is active, force 1422 * re-evaluation to cover the case of no traffic. 1423 */ 1424 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1425 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1426 else if (low_latency) 1427 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1428 1429 spin_unlock_bh(&mvm->tcm.lock); 1430 } 1431 1432 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1433 { 1434 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1435 1436 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1437 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1438 } 1439 1440 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1441 { 1442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1443 1444 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1445 } 1446 1447 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1448 { 1449 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1450 1451 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1452 mvm->trans->cfg->gp2_reg_addr) 1453 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1454 1455 return iwl_read_prph(mvm->trans, reg_addr); 1456 } 1457 1458 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1459 { 1460 bool ps_disabled; 1461 1462 lockdep_assert_held(&mvm->mutex); 1463 1464 /* Disable power save when reading GP2 */ 1465 ps_disabled = mvm->ps_disabled; 1466 if (!ps_disabled) { 1467 mvm->ps_disabled = true; 1468 iwl_mvm_power_update_device(mvm); 1469 } 1470 1471 *gp2 = iwl_mvm_get_systime(mvm); 1472 *boottime = ktime_get_boottime_ns(); 1473 1474 if (!ps_disabled) { 1475 mvm->ps_disabled = ps_disabled; 1476 iwl_mvm_power_update_device(mvm); 1477 } 1478 } 1479