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 if (!(cmd->flags & CMD_SEND_IN_IDLE)) 94 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD); 95 } 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 99 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE))) 100 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD); 101 102 /* 103 * If the caller wants the SKB, then don't hide any problems, the 104 * caller might access the response buffer which will be NULL if 105 * the command failed. 106 */ 107 if (cmd->flags & CMD_WANT_SKB) 108 return ret; 109 110 /* Silently ignore failures if RFKILL is asserted */ 111 if (!ret || ret == -ERFKILL) 112 return 0; 113 return ret; 114 } 115 116 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 117 u32 flags, u16 len, const void *data) 118 { 119 struct iwl_host_cmd cmd = { 120 .id = id, 121 .len = { len, }, 122 .data = { data, }, 123 .flags = flags, 124 }; 125 126 return iwl_mvm_send_cmd(mvm, &cmd); 127 } 128 129 /* 130 * We assume that the caller set the status to the success value 131 */ 132 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 133 u32 *status) 134 { 135 struct iwl_rx_packet *pkt; 136 struct iwl_cmd_response *resp; 137 int ret, resp_len; 138 139 lockdep_assert_held(&mvm->mutex); 140 141 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 142 if (WARN_ON(mvm->d3_test_active)) 143 return -EIO; 144 #endif 145 146 /* 147 * Only synchronous commands can wait for status, 148 * we use WANT_SKB so the caller can't. 149 */ 150 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 151 "cmd flags %x", cmd->flags)) 152 return -EINVAL; 153 154 cmd->flags |= CMD_WANT_SKB; 155 156 ret = iwl_trans_send_cmd(mvm->trans, cmd); 157 if (ret == -ERFKILL) { 158 /* 159 * The command failed because of RFKILL, don't update 160 * the status, leave it as success and return 0. 161 */ 162 return 0; 163 } else if (ret) { 164 return ret; 165 } 166 167 pkt = cmd->resp_pkt; 168 169 resp_len = iwl_rx_packet_payload_len(pkt); 170 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 171 ret = -EIO; 172 goto out_free_resp; 173 } 174 175 resp = (void *)pkt->data; 176 *status = le32_to_cpu(resp->status); 177 out_free_resp: 178 iwl_free_resp(cmd); 179 return ret; 180 } 181 182 /* 183 * We assume that the caller set the status to the sucess value 184 */ 185 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 186 const void *data, u32 *status) 187 { 188 struct iwl_host_cmd cmd = { 189 .id = id, 190 .len = { len, }, 191 .data = { data, }, 192 }; 193 194 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 195 } 196 197 #define IWL_DECLARE_RATE_INFO(r) \ 198 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 199 200 /* 201 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 202 */ 203 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 204 IWL_DECLARE_RATE_INFO(1), 205 IWL_DECLARE_RATE_INFO(2), 206 IWL_DECLARE_RATE_INFO(5), 207 IWL_DECLARE_RATE_INFO(11), 208 IWL_DECLARE_RATE_INFO(6), 209 IWL_DECLARE_RATE_INFO(9), 210 IWL_DECLARE_RATE_INFO(12), 211 IWL_DECLARE_RATE_INFO(18), 212 IWL_DECLARE_RATE_INFO(24), 213 IWL_DECLARE_RATE_INFO(36), 214 IWL_DECLARE_RATE_INFO(48), 215 IWL_DECLARE_RATE_INFO(54), 216 }; 217 218 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 219 enum nl80211_band band) 220 { 221 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 222 int idx; 223 int band_offset = 0; 224 225 /* Legacy rate format, search for match in table */ 226 if (band == NL80211_BAND_5GHZ) 227 band_offset = IWL_FIRST_OFDM_RATE; 228 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 229 if (fw_rate_idx_to_plcp[idx] == rate) 230 return idx - band_offset; 231 232 return -1; 233 } 234 235 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 236 { 237 /* Get PLCP rate for tx_cmd->rate_n_flags */ 238 return fw_rate_idx_to_plcp[rate_idx]; 239 } 240 241 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 242 { 243 struct iwl_rx_packet *pkt = rxb_addr(rxb); 244 struct iwl_error_resp *err_resp = (void *)pkt->data; 245 246 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 247 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 248 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 249 le16_to_cpu(err_resp->bad_cmd_seq_num), 250 le32_to_cpu(err_resp->error_service)); 251 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n", 252 le64_to_cpu(err_resp->timestamp)); 253 } 254 255 /* 256 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 257 * The parameter should also be a combination of ANT_[ABC]. 258 */ 259 u8 first_antenna(u8 mask) 260 { 261 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 262 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 263 return BIT(0); 264 return BIT(ffs(mask) - 1); 265 } 266 267 /* 268 * Toggles between TX antennas to send the probe request on. 269 * Receives the bitmask of valid TX antennas and the *index* used 270 * for the last TX, and returns the next valid *index* to use. 271 * In order to set it in the tx_cmd, must do BIT(idx). 272 */ 273 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 274 { 275 u8 ind = last_idx; 276 int i; 277 278 for (i = 0; i < MAX_ANT_NUM; i++) { 279 ind = (ind + 1) % MAX_ANT_NUM; 280 if (valid & BIT(ind)) 281 return ind; 282 } 283 284 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 285 return last_idx; 286 } 287 288 #define FW_SYSASSERT_CPU_MASK 0xf0000000 289 static const struct { 290 const char *name; 291 u8 num; 292 } advanced_lookup[] = { 293 { "NMI_INTERRUPT_WDG", 0x34 }, 294 { "SYSASSERT", 0x35 }, 295 { "UCODE_VERSION_MISMATCH", 0x37 }, 296 { "BAD_COMMAND", 0x38 }, 297 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 298 { "FATAL_ERROR", 0x3D }, 299 { "NMI_TRM_HW_ERR", 0x46 }, 300 { "NMI_INTERRUPT_TRM", 0x4C }, 301 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 302 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 303 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 304 { "NMI_INTERRUPT_HOST", 0x66 }, 305 { "NMI_INTERRUPT_LMAC_FATAL", 0x70 }, 306 { "NMI_INTERRUPT_UMAC_FATAL", 0x71 }, 307 { "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 }, 308 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 309 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 310 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 311 { "ADVANCED_SYSASSERT", 0 }, 312 }; 313 314 static const char *desc_lookup(u32 num) 315 { 316 int i; 317 318 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 319 if (advanced_lookup[i].num == (num & ~FW_SYSASSERT_CPU_MASK)) 320 return advanced_lookup[i].name; 321 322 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 323 return advanced_lookup[i].name; 324 } 325 326 /* 327 * Note: This structure is read from the device with IO accesses, 328 * and the reading already does the endian conversion. As it is 329 * read with u32-sized accesses, any members with a different size 330 * need to be ordered correctly though! 331 */ 332 struct iwl_error_event_table_v1 { 333 u32 valid; /* (nonzero) valid, (0) log is empty */ 334 u32 error_id; /* type of error */ 335 u32 pc; /* program counter */ 336 u32 blink1; /* branch link */ 337 u32 blink2; /* branch link */ 338 u32 ilink1; /* interrupt link */ 339 u32 ilink2; /* interrupt link */ 340 u32 data1; /* error-specific data */ 341 u32 data2; /* error-specific data */ 342 u32 data3; /* error-specific data */ 343 u32 bcon_time; /* beacon timer */ 344 u32 tsf_low; /* network timestamp function timer */ 345 u32 tsf_hi; /* network timestamp function timer */ 346 u32 gp1; /* GP1 timer register */ 347 u32 gp2; /* GP2 timer register */ 348 u32 gp3; /* GP3 timer register */ 349 u32 ucode_ver; /* uCode version */ 350 u32 hw_ver; /* HW Silicon version */ 351 u32 brd_ver; /* HW board version */ 352 u32 log_pc; /* log program counter */ 353 u32 frame_ptr; /* frame pointer */ 354 u32 stack_ptr; /* stack pointer */ 355 u32 hcmd; /* last host command header */ 356 u32 isr0; /* isr status register LMPM_NIC_ISR0: 357 * rxtx_flag */ 358 u32 isr1; /* isr status register LMPM_NIC_ISR1: 359 * host_flag */ 360 u32 isr2; /* isr status register LMPM_NIC_ISR2: 361 * enc_flag */ 362 u32 isr3; /* isr status register LMPM_NIC_ISR3: 363 * time_flag */ 364 u32 isr4; /* isr status register LMPM_NIC_ISR4: 365 * wico interrupt */ 366 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 367 u32 wait_event; /* wait event() caller address */ 368 u32 l2p_control; /* L2pControlField */ 369 u32 l2p_duration; /* L2pDurationField */ 370 u32 l2p_mhvalid; /* L2pMhValidBits */ 371 u32 l2p_addr_match; /* L2pAddrMatchStat */ 372 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 373 * (LMPM_PMG_SEL) */ 374 u32 u_timestamp; /* indicate when the date and time of the 375 * compilation */ 376 u32 flow_handler; /* FH read/write pointers, RX credit */ 377 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 378 379 struct iwl_error_event_table { 380 u32 valid; /* (nonzero) valid, (0) log is empty */ 381 u32 error_id; /* type of error */ 382 u32 trm_hw_status0; /* TRM HW status */ 383 u32 trm_hw_status1; /* TRM HW status */ 384 u32 blink2; /* branch link */ 385 u32 ilink1; /* interrupt link */ 386 u32 ilink2; /* interrupt link */ 387 u32 data1; /* error-specific data */ 388 u32 data2; /* error-specific data */ 389 u32 data3; /* error-specific data */ 390 u32 bcon_time; /* beacon timer */ 391 u32 tsf_low; /* network timestamp function timer */ 392 u32 tsf_hi; /* network timestamp function timer */ 393 u32 gp1; /* GP1 timer register */ 394 u32 gp2; /* GP2 timer register */ 395 u32 fw_rev_type; /* firmware revision type */ 396 u32 major; /* uCode version major */ 397 u32 minor; /* uCode version minor */ 398 u32 hw_ver; /* HW Silicon version */ 399 u32 brd_ver; /* HW board version */ 400 u32 log_pc; /* log program counter */ 401 u32 frame_ptr; /* frame pointer */ 402 u32 stack_ptr; /* stack pointer */ 403 u32 hcmd; /* last host command header */ 404 u32 isr0; /* isr status register LMPM_NIC_ISR0: 405 * rxtx_flag */ 406 u32 isr1; /* isr status register LMPM_NIC_ISR1: 407 * host_flag */ 408 u32 isr2; /* isr status register LMPM_NIC_ISR2: 409 * enc_flag */ 410 u32 isr3; /* isr status register LMPM_NIC_ISR3: 411 * time_flag */ 412 u32 isr4; /* isr status register LMPM_NIC_ISR4: 413 * wico interrupt */ 414 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 415 u32 wait_event; /* wait event() caller address */ 416 u32 l2p_control; /* L2pControlField */ 417 u32 l2p_duration; /* L2pDurationField */ 418 u32 l2p_mhvalid; /* L2pMhValidBits */ 419 u32 l2p_addr_match; /* L2pAddrMatchStat */ 420 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 421 * (LMPM_PMG_SEL) */ 422 u32 u_timestamp; /* indicate when the date and time of the 423 * compilation */ 424 u32 flow_handler; /* FH read/write pointers, RX credit */ 425 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 426 427 /* 428 * UMAC error struct - relevant starting from family 8000 chip. 429 * Note: This structure is read from the device with IO accesses, 430 * and the reading already does the endian conversion. As it is 431 * read with u32-sized accesses, any members with a different size 432 * need to be ordered correctly though! 433 */ 434 struct iwl_umac_error_event_table { 435 u32 valid; /* (nonzero) valid, (0) log is empty */ 436 u32 error_id; /* type of error */ 437 u32 blink1; /* branch link */ 438 u32 blink2; /* branch link */ 439 u32 ilink1; /* interrupt link */ 440 u32 ilink2; /* interrupt link */ 441 u32 data1; /* error-specific data */ 442 u32 data2; /* error-specific data */ 443 u32 data3; /* error-specific data */ 444 u32 umac_major; 445 u32 umac_minor; 446 u32 frame_pointer; /* core register 27*/ 447 u32 stack_pointer; /* core register 28 */ 448 u32 cmd_header; /* latest host cmd sent to UMAC */ 449 u32 nic_isr_pref; /* ISR status register */ 450 } __packed; 451 452 #define ERROR_START_OFFSET (1 * sizeof(u32)) 453 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 454 455 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 456 { 457 struct iwl_trans *trans = mvm->trans; 458 struct iwl_umac_error_event_table table; 459 460 if (!mvm->support_umac_log) 461 return; 462 463 iwl_trans_read_mem_bytes(trans, mvm->umac_error_event_table, &table, 464 sizeof(table)); 465 466 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 467 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 468 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 469 mvm->status, table.valid); 470 } 471 472 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 473 desc_lookup(table.error_id)); 474 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 475 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 476 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 477 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 478 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 479 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 480 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 481 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 482 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 483 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 484 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 485 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 486 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 487 } 488 489 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base) 490 { 491 struct iwl_trans *trans = mvm->trans; 492 struct iwl_error_event_table table; 493 u32 val; 494 495 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 496 if (!base) 497 base = mvm->fw->init_errlog_ptr; 498 } else { 499 if (!base) 500 base = mvm->fw->inst_errlog_ptr; 501 } 502 503 if (base < 0x400000) { 504 IWL_ERR(mvm, 505 "Not valid error log pointer 0x%08X for %s uCode\n", 506 base, 507 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 508 ? "Init" : "RT"); 509 return; 510 } 511 512 /* check if there is a HW error */ 513 val = iwl_trans_read_mem32(trans, base); 514 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 515 int err; 516 517 IWL_ERR(trans, "HW error, resetting before reading\n"); 518 519 /* reset the device */ 520 iwl_trans_sw_reset(trans); 521 522 /* set INIT_DONE flag */ 523 iwl_set_bit(trans, CSR_GP_CNTRL, 524 BIT(trans->cfg->csr->flag_init_done)); 525 526 /* and wait for clock stabilization */ 527 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) 528 udelay(2); 529 530 err = iwl_poll_bit(trans, CSR_GP_CNTRL, 531 BIT(trans->cfg->csr->flag_mac_clock_ready), 532 BIT(trans->cfg->csr->flag_mac_clock_ready), 533 25000); 534 if (err < 0) { 535 IWL_DEBUG_INFO(trans, 536 "Failed to reset the card for the dump\n"); 537 return; 538 } 539 } 540 541 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 542 543 if (table.valid) 544 mvm->fwrt.dump.rt_status = table.error_id; 545 546 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 547 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 548 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 549 mvm->status, table.valid); 550 } 551 552 /* Do not change this output - scripts rely on it */ 553 554 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 555 556 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 557 desc_lookup(table.error_id)); 558 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 559 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 560 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 561 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 562 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 563 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 564 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 565 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 566 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 567 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 568 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 569 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 570 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 571 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 572 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 573 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 574 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 575 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 576 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 577 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 578 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 579 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 580 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 581 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 582 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 583 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 584 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 585 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 586 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 587 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 588 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 589 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 590 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 591 } 592 593 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 594 { 595 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 596 IWL_ERR(mvm, 597 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 598 return; 599 } 600 601 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]); 602 603 if (mvm->error_event_table[1]) 604 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]); 605 606 iwl_mvm_dump_umac_error_log(mvm); 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, bool sync) 651 { 652 struct iwl_host_cmd cmd = { 653 .id = LQ_CMD, 654 .len = { sizeof(struct iwl_lq_cmd), }, 655 .flags = sync ? 0 : 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 = 943 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 944 945 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 946 /* 947 * We can't know when the station is asleep or awake, so we 948 * must disable the queue hang detection. 949 */ 950 if (fw_has_capa(&mvm->fw->ucode_capa, 951 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 952 vif && vif->type == NL80211_IFTYPE_AP) 953 return IWL_WATCHDOG_DISABLED; 954 return iwlmvm_mod_params.tfd_q_hang_detect ? 955 default_timeout : IWL_WATCHDOG_DISABLED; 956 } 957 958 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 959 txq_timer = (void *)trigger->data; 960 961 if (tdls) 962 return le32_to_cpu(txq_timer->tdls); 963 964 if (cmd_q) 965 return le32_to_cpu(txq_timer->command_queue); 966 967 if (WARN_ON(!vif)) 968 return default_timeout; 969 970 switch (ieee80211_vif_type_p2p(vif)) { 971 case NL80211_IFTYPE_ADHOC: 972 return le32_to_cpu(txq_timer->ibss); 973 case NL80211_IFTYPE_STATION: 974 return le32_to_cpu(txq_timer->bss); 975 case NL80211_IFTYPE_AP: 976 return le32_to_cpu(txq_timer->softap); 977 case NL80211_IFTYPE_P2P_CLIENT: 978 return le32_to_cpu(txq_timer->p2p_client); 979 case NL80211_IFTYPE_P2P_GO: 980 return le32_to_cpu(txq_timer->p2p_go); 981 case NL80211_IFTYPE_P2P_DEVICE: 982 return le32_to_cpu(txq_timer->p2p_device); 983 case NL80211_IFTYPE_MONITOR: 984 return default_timeout; 985 default: 986 WARN_ON(1); 987 return mvm->cfg->base_params->wd_timeout; 988 } 989 } 990 991 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 992 const char *errmsg) 993 { 994 struct iwl_fw_dbg_trigger_tlv *trig; 995 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 996 997 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 998 FW_DBG_TRIGGER_MLME); 999 if (!trig) 1000 goto out; 1001 1002 trig_mlme = (void *)trig->data; 1003 1004 if (trig_mlme->stop_connection_loss && 1005 --trig_mlme->stop_connection_loss) 1006 goto out; 1007 1008 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1009 1010 out: 1011 ieee80211_connection_loss(vif); 1012 } 1013 1014 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1015 struct ieee80211_vif *vif, 1016 const struct ieee80211_sta *sta, 1017 u16 tid) 1018 { 1019 struct iwl_fw_dbg_trigger_tlv *trig; 1020 struct iwl_fw_dbg_trigger_ba *ba_trig; 1021 1022 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1023 FW_DBG_TRIGGER_BA); 1024 if (!trig) 1025 return; 1026 1027 ba_trig = (void *)trig->data; 1028 1029 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1030 return; 1031 1032 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1033 "Frame from %pM timed out, tid %d", 1034 sta->addr, tid); 1035 } 1036 1037 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1038 { 1039 if (!elapsed) 1040 return 0; 1041 1042 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1043 } 1044 1045 static enum iwl_mvm_traffic_load 1046 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1047 { 1048 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1049 1050 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1051 return IWL_MVM_TRAFFIC_HIGH; 1052 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1053 return IWL_MVM_TRAFFIC_MEDIUM; 1054 1055 return IWL_MVM_TRAFFIC_LOW; 1056 } 1057 1058 struct iwl_mvm_tcm_iter_data { 1059 struct iwl_mvm *mvm; 1060 bool any_sent; 1061 }; 1062 1063 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1064 { 1065 struct iwl_mvm_tcm_iter_data *data = _data; 1066 struct iwl_mvm *mvm = data->mvm; 1067 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1068 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1069 1070 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1071 return; 1072 1073 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1074 1075 if (!mvm->tcm.result.change[mvmvif->id] && 1076 prev == low_latency) { 1077 iwl_mvm_update_quotas(mvm, false, NULL); 1078 return; 1079 } 1080 1081 if (prev != low_latency) { 1082 /* this sends traffic load and updates quota as well */ 1083 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1084 LOW_LATENCY_TRAFFIC); 1085 } else { 1086 iwl_mvm_update_quotas(mvm, false, NULL); 1087 } 1088 1089 data->any_sent = true; 1090 } 1091 1092 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1093 { 1094 struct iwl_mvm_tcm_iter_data data = { 1095 .mvm = mvm, 1096 .any_sent = false, 1097 }; 1098 1099 mutex_lock(&mvm->mutex); 1100 1101 ieee80211_iterate_active_interfaces( 1102 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1103 iwl_mvm_tcm_iter, &data); 1104 1105 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1106 iwl_mvm_config_scan(mvm); 1107 1108 mutex_unlock(&mvm->mutex); 1109 } 1110 1111 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1112 { 1113 struct iwl_mvm *mvm; 1114 struct iwl_mvm_vif *mvmvif; 1115 struct ieee80211_vif *vif; 1116 1117 mvmvif = container_of(wk, struct iwl_mvm_vif, 1118 uapsd_nonagg_detected_wk.work); 1119 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1120 mvm = mvmvif->mvm; 1121 1122 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1123 return; 1124 1125 /* remember that this AP is broken */ 1126 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1127 vif->bss_conf.bssid, ETH_ALEN); 1128 mvm->uapsd_noagg_bssid_write_idx++; 1129 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1130 mvm->uapsd_noagg_bssid_write_idx = 0; 1131 1132 iwl_mvm_connection_loss(mvm, vif, 1133 "AP isn't using AMPDU with uAPSD enabled"); 1134 } 1135 1136 static void iwl_mvm_uapsd_agg_disconnect_iter(void *data, u8 *mac, 1137 struct ieee80211_vif *vif) 1138 { 1139 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1140 struct iwl_mvm *mvm = mvmvif->mvm; 1141 int *mac_id = data; 1142 1143 if (vif->type != NL80211_IFTYPE_STATION) 1144 return; 1145 1146 if (mvmvif->id != *mac_id) 1147 return; 1148 1149 if (!vif->bss_conf.assoc) 1150 return; 1151 1152 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1153 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1154 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1155 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1156 return; 1157 1158 if (mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected) 1159 return; 1160 1161 mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected = true; 1162 IWL_INFO(mvm, 1163 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1164 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1165 } 1166 1167 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1168 unsigned int elapsed, 1169 int mac) 1170 { 1171 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1172 u64 tpt; 1173 unsigned long rate; 1174 1175 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1176 1177 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1178 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1179 return; 1180 1181 if (iwl_mvm_has_new_rx_api(mvm)) { 1182 tpt = 8 * bytes; /* kbps */ 1183 do_div(tpt, elapsed); 1184 rate *= 1000; /* kbps */ 1185 if (tpt < 22 * rate / 100) 1186 return; 1187 } else { 1188 /* 1189 * the rate here is actually the threshold, in 100Kbps units, 1190 * so do the needed conversion from bytes to 100Kbps: 1191 * 100kb = bits / (100 * 1000), 1192 * 100kbps = 100kb / (msecs / 1000) == 1193 * (bits / (100 * 1000)) / (msecs / 1000) == 1194 * bits / (100 * msecs) 1195 */ 1196 tpt = (8 * bytes); 1197 do_div(tpt, elapsed * 100); 1198 if (tpt < rate) 1199 return; 1200 } 1201 1202 ieee80211_iterate_active_interfaces_atomic( 1203 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1204 iwl_mvm_uapsd_agg_disconnect_iter, &mac); 1205 } 1206 1207 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1208 struct ieee80211_vif *vif) 1209 { 1210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1211 u32 *band = _data; 1212 1213 if (!mvmvif->phy_ctxt) 1214 return; 1215 1216 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1217 } 1218 1219 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1220 unsigned long ts, 1221 bool handle_uapsd) 1222 { 1223 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1224 unsigned int uapsd_elapsed = 1225 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1226 u32 total_airtime = 0; 1227 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1228 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1229 int ac, mac, i; 1230 bool low_latency = false; 1231 enum iwl_mvm_traffic_load load, band_load; 1232 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1233 1234 if (handle_ll) 1235 mvm->tcm.ll_ts = ts; 1236 if (handle_uapsd) 1237 mvm->tcm.uapsd_nonagg_ts = ts; 1238 1239 mvm->tcm.result.elapsed = elapsed; 1240 1241 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1242 IEEE80211_IFACE_ITER_NORMAL, 1243 iwl_mvm_tcm_iterator, 1244 &band); 1245 1246 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1247 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1248 u32 vo_vi_pkts = 0; 1249 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1250 1251 total_airtime += airtime; 1252 band_airtime[band[mac]] += airtime; 1253 1254 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1255 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1256 mvm->tcm.result.load[mac] = load; 1257 mvm->tcm.result.airtime[mac] = airtime; 1258 1259 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1260 vo_vi_pkts += mdata->rx.pkts[ac] + 1261 mdata->tx.pkts[ac]; 1262 1263 /* enable immediately with enough packets but defer disabling */ 1264 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1265 mvm->tcm.result.low_latency[mac] = true; 1266 else if (handle_ll) 1267 mvm->tcm.result.low_latency[mac] = false; 1268 1269 if (handle_ll) { 1270 /* clear old data */ 1271 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1272 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1273 } 1274 low_latency |= mvm->tcm.result.low_latency[mac]; 1275 1276 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1277 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1278 mac); 1279 /* clear old data */ 1280 if (handle_uapsd) 1281 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1282 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1283 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1284 } 1285 1286 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1287 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1288 mvm->tcm.result.global_load = load; 1289 1290 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1291 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1292 mvm->tcm.result.band_load[i] = band_load; 1293 } 1294 1295 /* 1296 * If the current load isn't low we need to force re-evaluation 1297 * in the TCM period, so that we can return to low load if there 1298 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1299 * triggered by traffic). 1300 */ 1301 if (load != IWL_MVM_TRAFFIC_LOW) 1302 return MVM_TCM_PERIOD; 1303 /* 1304 * If low-latency is active we need to force re-evaluation after 1305 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1306 * when there's no traffic at all. 1307 */ 1308 if (low_latency) 1309 return MVM_LL_PERIOD; 1310 /* 1311 * Otherwise, we don't need to run the work struct because we're 1312 * in the default "idle" state - traffic indication is low (which 1313 * also covers the "no traffic" case) and low-latency is disabled 1314 * so there's no state that may need to be disabled when there's 1315 * no traffic at all. 1316 * 1317 * Note that this has no impact on the regular scheduling of the 1318 * updates triggered by traffic - those happen whenever one of the 1319 * two timeouts expire (if there's traffic at all.) 1320 */ 1321 return 0; 1322 } 1323 1324 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1325 { 1326 unsigned long ts = jiffies; 1327 bool handle_uapsd = 1328 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1329 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1330 1331 spin_lock(&mvm->tcm.lock); 1332 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1333 spin_unlock(&mvm->tcm.lock); 1334 return; 1335 } 1336 spin_unlock(&mvm->tcm.lock); 1337 1338 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1339 mutex_lock(&mvm->mutex); 1340 if (iwl_mvm_request_statistics(mvm, true)) 1341 handle_uapsd = false; 1342 mutex_unlock(&mvm->mutex); 1343 } 1344 1345 spin_lock(&mvm->tcm.lock); 1346 /* re-check if somebody else won the recheck race */ 1347 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1348 /* calculate statistics */ 1349 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1350 handle_uapsd); 1351 1352 /* the memset needs to be visible before the timestamp */ 1353 smp_mb(); 1354 mvm->tcm.ts = ts; 1355 if (work_delay) 1356 schedule_delayed_work(&mvm->tcm.work, work_delay); 1357 } 1358 spin_unlock(&mvm->tcm.lock); 1359 1360 iwl_mvm_tcm_results(mvm); 1361 } 1362 1363 void iwl_mvm_tcm_work(struct work_struct *work) 1364 { 1365 struct delayed_work *delayed_work = to_delayed_work(work); 1366 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1367 tcm.work); 1368 1369 iwl_mvm_recalc_tcm(mvm); 1370 } 1371 1372 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1373 { 1374 spin_lock_bh(&mvm->tcm.lock); 1375 mvm->tcm.paused = true; 1376 spin_unlock_bh(&mvm->tcm.lock); 1377 if (with_cancel) 1378 cancel_delayed_work_sync(&mvm->tcm.work); 1379 } 1380 1381 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1382 { 1383 int mac; 1384 bool low_latency = false; 1385 1386 spin_lock_bh(&mvm->tcm.lock); 1387 mvm->tcm.ts = jiffies; 1388 mvm->tcm.ll_ts = jiffies; 1389 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1390 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1391 1392 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1393 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1394 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1395 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1396 1397 if (mvm->tcm.result.low_latency[mac]) 1398 low_latency = true; 1399 } 1400 /* The TCM data needs to be reset before "paused" flag changes */ 1401 smp_mb(); 1402 mvm->tcm.paused = false; 1403 1404 /* 1405 * if the current load is not low or low latency is active, force 1406 * re-evaluation to cover the case of no traffic. 1407 */ 1408 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1409 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1410 else if (low_latency) 1411 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1412 1413 spin_unlock_bh(&mvm->tcm.lock); 1414 } 1415 1416 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1417 { 1418 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1419 1420 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1421 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1422 } 1423 1424 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1425 { 1426 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1427 1428 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1429 } 1430 1431 1432 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1433 { 1434 bool ps_disabled; 1435 1436 lockdep_assert_held(&mvm->mutex); 1437 1438 /* Disable power save when reading GP2 */ 1439 ps_disabled = mvm->ps_disabled; 1440 if (!ps_disabled) { 1441 mvm->ps_disabled = true; 1442 iwl_mvm_power_update_device(mvm); 1443 } 1444 1445 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); 1446 *boottime = ktime_get_boot_ns(); 1447 1448 if (!ps_disabled) { 1449 mvm->ps_disabled = ps_disabled; 1450 iwl_mvm_power_update_device(mvm); 1451 } 1452 } 1453