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%016llX\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 (table.valid) 467 mvm->fwrt.dump.umac_err_id = table.error_id; 468 469 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 470 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 471 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 472 mvm->status, table.valid); 473 } 474 475 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 476 desc_lookup(table.error_id)); 477 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 478 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 479 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 480 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 481 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 482 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 483 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 484 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 485 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 486 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 487 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 488 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 489 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 490 } 491 492 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 493 { 494 struct iwl_trans *trans = mvm->trans; 495 struct iwl_error_event_table table; 496 u32 val, base = mvm->error_event_table[lmac_num]; 497 498 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 499 if (!base) 500 base = mvm->fw->init_errlog_ptr; 501 } else { 502 if (!base) 503 base = mvm->fw->inst_errlog_ptr; 504 } 505 506 if (base < 0x400000) { 507 IWL_ERR(mvm, 508 "Not valid error log pointer 0x%08X for %s uCode\n", 509 base, 510 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 511 ? "Init" : "RT"); 512 return; 513 } 514 515 /* check if there is a HW error */ 516 val = iwl_trans_read_mem32(trans, base); 517 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 518 int err; 519 520 IWL_ERR(trans, "HW error, resetting before reading\n"); 521 522 /* reset the device */ 523 iwl_trans_sw_reset(trans); 524 525 /* set INIT_DONE flag */ 526 iwl_set_bit(trans, CSR_GP_CNTRL, 527 BIT(trans->cfg->csr->flag_init_done)); 528 529 /* and wait for clock stabilization */ 530 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) 531 udelay(2); 532 533 err = iwl_poll_bit(trans, CSR_GP_CNTRL, 534 BIT(trans->cfg->csr->flag_mac_clock_ready), 535 BIT(trans->cfg->csr->flag_mac_clock_ready), 536 25000); 537 if (err < 0) { 538 IWL_DEBUG_INFO(trans, 539 "Failed to reset the card for the dump\n"); 540 return; 541 } 542 } 543 544 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 545 546 if (table.valid) 547 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 548 549 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 550 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 551 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 552 mvm->status, table.valid); 553 } 554 555 /* Do not change this output - scripts rely on it */ 556 557 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 558 559 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 560 desc_lookup(table.error_id)); 561 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 562 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 563 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 564 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 565 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 566 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 567 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 568 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 569 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 570 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 571 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 572 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 573 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 574 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 575 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 576 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 577 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 578 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 579 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 580 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 581 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 582 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 583 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 584 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 585 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 586 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 587 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 588 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 589 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 590 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 591 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 592 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 593 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 594 } 595 596 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 597 { 598 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 599 IWL_ERR(mvm, 600 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 601 return; 602 } 603 604 iwl_mvm_dump_lmac_error_log(mvm, 0); 605 606 if (mvm->error_event_table[1]) 607 iwl_mvm_dump_lmac_error_log(mvm, 1); 608 609 iwl_mvm_dump_umac_error_log(mvm); 610 } 611 612 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 613 int tid, int frame_limit, u16 ssn) 614 { 615 struct iwl_scd_txq_cfg_cmd cmd = { 616 .scd_queue = queue, 617 .action = SCD_CFG_ENABLE_QUEUE, 618 .window = frame_limit, 619 .sta_id = sta_id, 620 .ssn = cpu_to_le16(ssn), 621 .tx_fifo = fifo, 622 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 623 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 624 .tid = tid, 625 }; 626 int ret; 627 628 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 629 return -EINVAL; 630 631 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 632 "Trying to reconfig unallocated queue %d\n", queue)) 633 return -ENXIO; 634 635 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 636 637 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 638 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 639 queue, fifo, ret); 640 641 return ret; 642 } 643 644 /** 645 * iwl_mvm_send_lq_cmd() - Send link quality command 646 * @sync: This command can be sent synchronously. 647 * 648 * The link quality command is sent as the last step of station creation. 649 * This is the special case in which init is set and we call a callback in 650 * this case to clear the state indicating that station creation is in 651 * progress. 652 */ 653 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync) 654 { 655 struct iwl_host_cmd cmd = { 656 .id = LQ_CMD, 657 .len = { sizeof(struct iwl_lq_cmd), }, 658 .flags = sync ? 0 : CMD_ASYNC, 659 .data = { lq, }, 660 }; 661 662 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 663 iwl_mvm_has_tlc_offload(mvm))) 664 return -EINVAL; 665 666 return iwl_mvm_send_cmd(mvm, &cmd); 667 } 668 669 /** 670 * iwl_mvm_update_smps - Get a request to change the SMPS mode 671 * @req_type: The part of the driver who call for a change. 672 * @smps_requests: The request to change the SMPS mode. 673 * 674 * Get a requst to change the SMPS mode, 675 * and change it according to all other requests in the driver. 676 */ 677 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 678 enum iwl_mvm_smps_type_request req_type, 679 enum ieee80211_smps_mode smps_request) 680 { 681 struct iwl_mvm_vif *mvmvif; 682 enum ieee80211_smps_mode smps_mode; 683 int i; 684 685 lockdep_assert_held(&mvm->mutex); 686 687 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 688 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 689 return; 690 691 if (vif->type == NL80211_IFTYPE_AP) 692 smps_mode = IEEE80211_SMPS_OFF; 693 else 694 smps_mode = IEEE80211_SMPS_AUTOMATIC; 695 696 mvmvif = iwl_mvm_vif_from_mac80211(vif); 697 mvmvif->smps_requests[req_type] = smps_request; 698 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 699 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 700 smps_mode = IEEE80211_SMPS_STATIC; 701 break; 702 } 703 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 704 smps_mode = IEEE80211_SMPS_DYNAMIC; 705 } 706 707 ieee80211_request_smps(vif, smps_mode); 708 } 709 710 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 711 { 712 struct iwl_statistics_cmd scmd = { 713 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 714 }; 715 struct iwl_host_cmd cmd = { 716 .id = STATISTICS_CMD, 717 .len[0] = sizeof(scmd), 718 .data[0] = &scmd, 719 .flags = CMD_WANT_SKB, 720 }; 721 int ret; 722 723 ret = iwl_mvm_send_cmd(mvm, &cmd); 724 if (ret) 725 return ret; 726 727 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 728 iwl_free_resp(&cmd); 729 730 if (clear) 731 iwl_mvm_accu_radio_stats(mvm); 732 733 return 0; 734 } 735 736 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 737 { 738 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 739 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 740 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 741 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 742 } 743 744 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 745 struct ieee80211_vif *vif) 746 { 747 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 748 bool *result = _data; 749 int i; 750 751 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 752 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 753 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 754 *result = false; 755 } 756 } 757 758 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 759 { 760 bool result = true; 761 762 lockdep_assert_held(&mvm->mutex); 763 764 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 765 return false; 766 767 if (mvm->cfg->rx_with_siso_diversity) 768 return false; 769 770 ieee80211_iterate_active_interfaces_atomic( 771 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 772 iwl_mvm_diversity_iter, &result); 773 774 return result; 775 } 776 777 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 778 bool low_latency, u16 mac_id) 779 { 780 struct iwl_mac_low_latency_cmd cmd = { 781 .mac_id = cpu_to_le32(mac_id) 782 }; 783 784 if (!fw_has_capa(&mvm->fw->ucode_capa, 785 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 786 return; 787 788 if (low_latency) { 789 /* currently we don't care about the direction */ 790 cmd.low_latency_rx = 1; 791 cmd.low_latency_tx = 1; 792 } 793 794 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 795 MAC_CONF_GROUP, 0), 796 0, sizeof(cmd), &cmd)) 797 IWL_ERR(mvm, "Failed to send low latency command\n"); 798 } 799 800 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 801 bool low_latency, 802 enum iwl_mvm_low_latency_cause cause) 803 { 804 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 805 int res; 806 bool prev; 807 808 lockdep_assert_held(&mvm->mutex); 809 810 prev = iwl_mvm_vif_low_latency(mvmvif); 811 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 812 813 low_latency = iwl_mvm_vif_low_latency(mvmvif); 814 815 if (low_latency == prev) 816 return 0; 817 818 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 819 820 res = iwl_mvm_update_quotas(mvm, false, NULL); 821 if (res) 822 return res; 823 824 iwl_mvm_bt_coex_vif_change(mvm); 825 826 return iwl_mvm_power_update_mac(mvm); 827 } 828 829 struct iwl_mvm_low_latency_iter { 830 bool result; 831 bool result_per_band[NUM_NL80211_BANDS]; 832 }; 833 834 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 835 { 836 struct iwl_mvm_low_latency_iter *result = _data; 837 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 838 enum nl80211_band band; 839 840 if (iwl_mvm_vif_low_latency(mvmvif)) { 841 result->result = true; 842 843 if (!mvmvif->phy_ctxt) 844 return; 845 846 band = mvmvif->phy_ctxt->channel->band; 847 result->result_per_band[band] = true; 848 } 849 } 850 851 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 852 { 853 struct iwl_mvm_low_latency_iter data = {}; 854 855 ieee80211_iterate_active_interfaces_atomic( 856 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 857 iwl_mvm_ll_iter, &data); 858 859 return data.result; 860 } 861 862 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 863 { 864 struct iwl_mvm_low_latency_iter data = {}; 865 866 ieee80211_iterate_active_interfaces_atomic( 867 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 868 iwl_mvm_ll_iter, &data); 869 870 return data.result_per_band[band]; 871 } 872 873 struct iwl_bss_iter_data { 874 struct ieee80211_vif *vif; 875 bool error; 876 }; 877 878 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 879 struct ieee80211_vif *vif) 880 { 881 struct iwl_bss_iter_data *data = _data; 882 883 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 884 return; 885 886 if (data->vif) { 887 data->error = true; 888 return; 889 } 890 891 data->vif = vif; 892 } 893 894 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 895 { 896 struct iwl_bss_iter_data bss_iter_data = {}; 897 898 ieee80211_iterate_active_interfaces_atomic( 899 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 900 iwl_mvm_bss_iface_iterator, &bss_iter_data); 901 902 if (bss_iter_data.error) { 903 IWL_ERR(mvm, "More than one managed interface active!\n"); 904 return ERR_PTR(-EINVAL); 905 } 906 907 return bss_iter_data.vif; 908 } 909 910 struct iwl_sta_iter_data { 911 bool assoc; 912 }; 913 914 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 915 struct ieee80211_vif *vif) 916 { 917 struct iwl_sta_iter_data *data = _data; 918 919 if (vif->type != NL80211_IFTYPE_STATION) 920 return; 921 922 if (vif->bss_conf.assoc) 923 data->assoc = true; 924 } 925 926 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 927 { 928 struct iwl_sta_iter_data data = { 929 .assoc = false, 930 }; 931 932 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 933 IEEE80211_IFACE_ITER_NORMAL, 934 iwl_mvm_sta_iface_iterator, 935 &data); 936 return data.assoc; 937 } 938 939 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 940 struct ieee80211_vif *vif, 941 bool tdls, bool cmd_q) 942 { 943 struct iwl_fw_dbg_trigger_tlv *trigger; 944 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 945 unsigned int default_timeout = 946 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 947 948 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 949 /* 950 * We can't know when the station is asleep or awake, so we 951 * must disable the queue hang detection. 952 */ 953 if (fw_has_capa(&mvm->fw->ucode_capa, 954 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 955 vif && vif->type == NL80211_IFTYPE_AP) 956 return IWL_WATCHDOG_DISABLED; 957 return iwlmvm_mod_params.tfd_q_hang_detect ? 958 default_timeout : IWL_WATCHDOG_DISABLED; 959 } 960 961 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 962 txq_timer = (void *)trigger->data; 963 964 if (tdls) 965 return le32_to_cpu(txq_timer->tdls); 966 967 if (cmd_q) 968 return le32_to_cpu(txq_timer->command_queue); 969 970 if (WARN_ON(!vif)) 971 return default_timeout; 972 973 switch (ieee80211_vif_type_p2p(vif)) { 974 case NL80211_IFTYPE_ADHOC: 975 return le32_to_cpu(txq_timer->ibss); 976 case NL80211_IFTYPE_STATION: 977 return le32_to_cpu(txq_timer->bss); 978 case NL80211_IFTYPE_AP: 979 return le32_to_cpu(txq_timer->softap); 980 case NL80211_IFTYPE_P2P_CLIENT: 981 return le32_to_cpu(txq_timer->p2p_client); 982 case NL80211_IFTYPE_P2P_GO: 983 return le32_to_cpu(txq_timer->p2p_go); 984 case NL80211_IFTYPE_P2P_DEVICE: 985 return le32_to_cpu(txq_timer->p2p_device); 986 case NL80211_IFTYPE_MONITOR: 987 return default_timeout; 988 default: 989 WARN_ON(1); 990 return mvm->cfg->base_params->wd_timeout; 991 } 992 } 993 994 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 995 const char *errmsg) 996 { 997 struct iwl_fw_dbg_trigger_tlv *trig; 998 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 999 1000 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1001 FW_DBG_TRIGGER_MLME); 1002 if (!trig) 1003 goto out; 1004 1005 trig_mlme = (void *)trig->data; 1006 1007 if (trig_mlme->stop_connection_loss && 1008 --trig_mlme->stop_connection_loss) 1009 goto out; 1010 1011 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1012 1013 out: 1014 ieee80211_connection_loss(vif); 1015 } 1016 1017 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1018 struct ieee80211_vif *vif, 1019 const struct ieee80211_sta *sta, 1020 u16 tid) 1021 { 1022 struct iwl_fw_dbg_trigger_tlv *trig; 1023 struct iwl_fw_dbg_trigger_ba *ba_trig; 1024 1025 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1026 FW_DBG_TRIGGER_BA); 1027 if (!trig) 1028 return; 1029 1030 ba_trig = (void *)trig->data; 1031 1032 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1033 return; 1034 1035 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1036 "Frame from %pM timed out, tid %d", 1037 sta->addr, tid); 1038 } 1039 1040 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1041 { 1042 if (!elapsed) 1043 return 0; 1044 1045 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1046 } 1047 1048 static enum iwl_mvm_traffic_load 1049 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1050 { 1051 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1052 1053 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1054 return IWL_MVM_TRAFFIC_HIGH; 1055 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1056 return IWL_MVM_TRAFFIC_MEDIUM; 1057 1058 return IWL_MVM_TRAFFIC_LOW; 1059 } 1060 1061 struct iwl_mvm_tcm_iter_data { 1062 struct iwl_mvm *mvm; 1063 bool any_sent; 1064 }; 1065 1066 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1067 { 1068 struct iwl_mvm_tcm_iter_data *data = _data; 1069 struct iwl_mvm *mvm = data->mvm; 1070 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1071 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1072 1073 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1074 return; 1075 1076 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1077 1078 if (!mvm->tcm.result.change[mvmvif->id] && 1079 prev == low_latency) { 1080 iwl_mvm_update_quotas(mvm, false, NULL); 1081 return; 1082 } 1083 1084 if (prev != low_latency) { 1085 /* this sends traffic load and updates quota as well */ 1086 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1087 LOW_LATENCY_TRAFFIC); 1088 } else { 1089 iwl_mvm_update_quotas(mvm, false, NULL); 1090 } 1091 1092 data->any_sent = true; 1093 } 1094 1095 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1096 { 1097 struct iwl_mvm_tcm_iter_data data = { 1098 .mvm = mvm, 1099 .any_sent = false, 1100 }; 1101 1102 mutex_lock(&mvm->mutex); 1103 1104 ieee80211_iterate_active_interfaces( 1105 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1106 iwl_mvm_tcm_iter, &data); 1107 1108 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1109 iwl_mvm_config_scan(mvm); 1110 1111 mutex_unlock(&mvm->mutex); 1112 } 1113 1114 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1115 { 1116 struct iwl_mvm *mvm; 1117 struct iwl_mvm_vif *mvmvif; 1118 struct ieee80211_vif *vif; 1119 1120 mvmvif = container_of(wk, struct iwl_mvm_vif, 1121 uapsd_nonagg_detected_wk.work); 1122 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1123 mvm = mvmvif->mvm; 1124 1125 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1126 return; 1127 1128 /* remember that this AP is broken */ 1129 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1130 vif->bss_conf.bssid, ETH_ALEN); 1131 mvm->uapsd_noagg_bssid_write_idx++; 1132 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1133 mvm->uapsd_noagg_bssid_write_idx = 0; 1134 1135 iwl_mvm_connection_loss(mvm, vif, 1136 "AP isn't using AMPDU with uAPSD enabled"); 1137 } 1138 1139 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1140 struct ieee80211_vif *vif) 1141 { 1142 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1143 1144 if (vif->type != NL80211_IFTYPE_STATION) 1145 return; 1146 1147 if (!vif->bss_conf.assoc) 1148 return; 1149 1150 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1151 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1152 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1153 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1154 return; 1155 1156 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1157 return; 1158 1159 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1160 IWL_INFO(mvm, 1161 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1162 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1163 } 1164 1165 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1166 unsigned int elapsed, 1167 int mac) 1168 { 1169 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1170 u64 tpt; 1171 unsigned long rate; 1172 struct ieee80211_vif *vif; 1173 1174 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1175 1176 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1177 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1178 return; 1179 1180 if (iwl_mvm_has_new_rx_api(mvm)) { 1181 tpt = 8 * bytes; /* kbps */ 1182 do_div(tpt, elapsed); 1183 rate *= 1000; /* kbps */ 1184 if (tpt < 22 * rate / 100) 1185 return; 1186 } else { 1187 /* 1188 * the rate here is actually the threshold, in 100Kbps units, 1189 * so do the needed conversion from bytes to 100Kbps: 1190 * 100kb = bits / (100 * 1000), 1191 * 100kbps = 100kb / (msecs / 1000) == 1192 * (bits / (100 * 1000)) / (msecs / 1000) == 1193 * bits / (100 * msecs) 1194 */ 1195 tpt = (8 * bytes); 1196 do_div(tpt, elapsed * 100); 1197 if (tpt < rate) 1198 return; 1199 } 1200 1201 rcu_read_lock(); 1202 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1203 if (vif) 1204 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1205 rcu_read_unlock(); 1206 } 1207 1208 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1209 struct ieee80211_vif *vif) 1210 { 1211 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1212 u32 *band = _data; 1213 1214 if (!mvmvif->phy_ctxt) 1215 return; 1216 1217 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1218 } 1219 1220 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1221 unsigned long ts, 1222 bool handle_uapsd) 1223 { 1224 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1225 unsigned int uapsd_elapsed = 1226 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1227 u32 total_airtime = 0; 1228 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1229 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1230 int ac, mac, i; 1231 bool low_latency = false; 1232 enum iwl_mvm_traffic_load load, band_load; 1233 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1234 1235 if (handle_ll) 1236 mvm->tcm.ll_ts = ts; 1237 if (handle_uapsd) 1238 mvm->tcm.uapsd_nonagg_ts = ts; 1239 1240 mvm->tcm.result.elapsed = elapsed; 1241 1242 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1243 IEEE80211_IFACE_ITER_NORMAL, 1244 iwl_mvm_tcm_iterator, 1245 &band); 1246 1247 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1248 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1249 u32 vo_vi_pkts = 0; 1250 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1251 1252 total_airtime += airtime; 1253 band_airtime[band[mac]] += airtime; 1254 1255 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1256 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1257 mvm->tcm.result.load[mac] = load; 1258 mvm->tcm.result.airtime[mac] = airtime; 1259 1260 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1261 vo_vi_pkts += mdata->rx.pkts[ac] + 1262 mdata->tx.pkts[ac]; 1263 1264 /* enable immediately with enough packets but defer disabling */ 1265 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1266 mvm->tcm.result.low_latency[mac] = true; 1267 else if (handle_ll) 1268 mvm->tcm.result.low_latency[mac] = false; 1269 1270 if (handle_ll) { 1271 /* clear old data */ 1272 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1273 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1274 } 1275 low_latency |= mvm->tcm.result.low_latency[mac]; 1276 1277 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1278 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1279 mac); 1280 /* clear old data */ 1281 if (handle_uapsd) 1282 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1283 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1284 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1285 } 1286 1287 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1288 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1289 mvm->tcm.result.global_load = load; 1290 1291 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1292 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1293 mvm->tcm.result.band_load[i] = band_load; 1294 } 1295 1296 /* 1297 * If the current load isn't low we need to force re-evaluation 1298 * in the TCM period, so that we can return to low load if there 1299 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1300 * triggered by traffic). 1301 */ 1302 if (load != IWL_MVM_TRAFFIC_LOW) 1303 return MVM_TCM_PERIOD; 1304 /* 1305 * If low-latency is active we need to force re-evaluation after 1306 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1307 * when there's no traffic at all. 1308 */ 1309 if (low_latency) 1310 return MVM_LL_PERIOD; 1311 /* 1312 * Otherwise, we don't need to run the work struct because we're 1313 * in the default "idle" state - traffic indication is low (which 1314 * also covers the "no traffic" case) and low-latency is disabled 1315 * so there's no state that may need to be disabled when there's 1316 * no traffic at all. 1317 * 1318 * Note that this has no impact on the regular scheduling of the 1319 * updates triggered by traffic - those happen whenever one of the 1320 * two timeouts expire (if there's traffic at all.) 1321 */ 1322 return 0; 1323 } 1324 1325 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1326 { 1327 unsigned long ts = jiffies; 1328 bool handle_uapsd = 1329 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1330 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1331 1332 spin_lock(&mvm->tcm.lock); 1333 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1334 spin_unlock(&mvm->tcm.lock); 1335 return; 1336 } 1337 spin_unlock(&mvm->tcm.lock); 1338 1339 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1340 mutex_lock(&mvm->mutex); 1341 if (iwl_mvm_request_statistics(mvm, true)) 1342 handle_uapsd = false; 1343 mutex_unlock(&mvm->mutex); 1344 } 1345 1346 spin_lock(&mvm->tcm.lock); 1347 /* re-check if somebody else won the recheck race */ 1348 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1349 /* calculate statistics */ 1350 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1351 handle_uapsd); 1352 1353 /* the memset needs to be visible before the timestamp */ 1354 smp_mb(); 1355 mvm->tcm.ts = ts; 1356 if (work_delay) 1357 schedule_delayed_work(&mvm->tcm.work, work_delay); 1358 } 1359 spin_unlock(&mvm->tcm.lock); 1360 1361 iwl_mvm_tcm_results(mvm); 1362 } 1363 1364 void iwl_mvm_tcm_work(struct work_struct *work) 1365 { 1366 struct delayed_work *delayed_work = to_delayed_work(work); 1367 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1368 tcm.work); 1369 1370 iwl_mvm_recalc_tcm(mvm); 1371 } 1372 1373 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1374 { 1375 spin_lock_bh(&mvm->tcm.lock); 1376 mvm->tcm.paused = true; 1377 spin_unlock_bh(&mvm->tcm.lock); 1378 if (with_cancel) 1379 cancel_delayed_work_sync(&mvm->tcm.work); 1380 } 1381 1382 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1383 { 1384 int mac; 1385 bool low_latency = false; 1386 1387 spin_lock_bh(&mvm->tcm.lock); 1388 mvm->tcm.ts = jiffies; 1389 mvm->tcm.ll_ts = jiffies; 1390 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1391 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1392 1393 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1394 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1395 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1396 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1397 1398 if (mvm->tcm.result.low_latency[mac]) 1399 low_latency = true; 1400 } 1401 /* The TCM data needs to be reset before "paused" flag changes */ 1402 smp_mb(); 1403 mvm->tcm.paused = false; 1404 1405 /* 1406 * if the current load is not low or low latency is active, force 1407 * re-evaluation to cover the case of no traffic. 1408 */ 1409 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1410 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1411 else if (low_latency) 1412 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1413 1414 spin_unlock_bh(&mvm->tcm.lock); 1415 } 1416 1417 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1418 { 1419 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1420 1421 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1422 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1423 } 1424 1425 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1426 { 1427 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1428 1429 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1430 } 1431 1432 1433 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1434 { 1435 bool ps_disabled; 1436 1437 lockdep_assert_held(&mvm->mutex); 1438 1439 /* Disable power save when reading GP2 */ 1440 ps_disabled = mvm->ps_disabled; 1441 if (!ps_disabled) { 1442 mvm->ps_disabled = true; 1443 iwl_mvm_power_update_device(mvm); 1444 } 1445 1446 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); 1447 *boottime = ktime_get_boot_ns(); 1448 1449 if (!ps_disabled) { 1450 mvm->ps_disabled = ps_disabled; 1451 iwl_mvm_power_update_device(mvm); 1452 } 1453 } 1454