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 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 25 * USA 26 * 27 * The full GNU General Public License is included in this distribution 28 * in the file called COPYING. 29 * 30 * Contact Information: 31 * Intel Linux Wireless <linuxwifi@intel.com> 32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 33 * 34 * BSD LICENSE 35 * 36 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 37 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 38 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 39 * Copyright(c) 2018 Intel Corporation 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 46 * * Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * * Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in 50 * the documentation and/or other materials provided with the 51 * distribution. 52 * * Neither the name Intel Corporation nor the names of its 53 * contributors may be used to endorse or promote products derived 54 * from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 57 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 58 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 59 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 60 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 62 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 66 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 * 68 *****************************************************************************/ 69 #include <net/mac80211.h> 70 71 #include "iwl-debug.h" 72 #include "iwl-io.h" 73 #include "iwl-prph.h" 74 #include "iwl-csr.h" 75 #include "mvm.h" 76 #include "fw/api/rs.h" 77 78 /* 79 * Will return 0 even if the cmd failed when RFKILL is asserted unless 80 * CMD_WANT_SKB is set in cmd->flags. 81 */ 82 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 83 { 84 int ret; 85 86 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 87 if (WARN_ON(mvm->d3_test_active)) 88 return -EIO; 89 #endif 90 91 /* 92 * Synchronous commands from this op-mode must hold 93 * the mutex, this ensures we don't try to send two 94 * (or more) synchronous commands at a time. 95 */ 96 if (!(cmd->flags & CMD_ASYNC)) { 97 lockdep_assert_held(&mvm->mutex); 98 if (!(cmd->flags & CMD_SEND_IN_IDLE)) 99 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD); 100 } 101 102 ret = iwl_trans_send_cmd(mvm->trans, cmd); 103 104 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE))) 105 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD); 106 107 /* 108 * If the caller wants the SKB, then don't hide any problems, the 109 * caller might access the response buffer which will be NULL if 110 * the command failed. 111 */ 112 if (cmd->flags & CMD_WANT_SKB) 113 return ret; 114 115 /* Silently ignore failures if RFKILL is asserted */ 116 if (!ret || ret == -ERFKILL) 117 return 0; 118 return ret; 119 } 120 121 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 122 u32 flags, u16 len, const void *data) 123 { 124 struct iwl_host_cmd cmd = { 125 .id = id, 126 .len = { len, }, 127 .data = { data, }, 128 .flags = flags, 129 }; 130 131 return iwl_mvm_send_cmd(mvm, &cmd); 132 } 133 134 /* 135 * We assume that the caller set the status to the success value 136 */ 137 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 138 u32 *status) 139 { 140 struct iwl_rx_packet *pkt; 141 struct iwl_cmd_response *resp; 142 int ret, resp_len; 143 144 lockdep_assert_held(&mvm->mutex); 145 146 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 147 if (WARN_ON(mvm->d3_test_active)) 148 return -EIO; 149 #endif 150 151 /* 152 * Only synchronous commands can wait for status, 153 * we use WANT_SKB so the caller can't. 154 */ 155 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 156 "cmd flags %x", cmd->flags)) 157 return -EINVAL; 158 159 cmd->flags |= CMD_WANT_SKB; 160 161 ret = iwl_trans_send_cmd(mvm->trans, cmd); 162 if (ret == -ERFKILL) { 163 /* 164 * The command failed because of RFKILL, don't update 165 * the status, leave it as success and return 0. 166 */ 167 return 0; 168 } else if (ret) { 169 return ret; 170 } 171 172 pkt = cmd->resp_pkt; 173 174 resp_len = iwl_rx_packet_payload_len(pkt); 175 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 176 ret = -EIO; 177 goto out_free_resp; 178 } 179 180 resp = (void *)pkt->data; 181 *status = le32_to_cpu(resp->status); 182 out_free_resp: 183 iwl_free_resp(cmd); 184 return ret; 185 } 186 187 /* 188 * We assume that the caller set the status to the sucess value 189 */ 190 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 191 const void *data, u32 *status) 192 { 193 struct iwl_host_cmd cmd = { 194 .id = id, 195 .len = { len, }, 196 .data = { data, }, 197 }; 198 199 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 200 } 201 202 #define IWL_DECLARE_RATE_INFO(r) \ 203 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 204 205 /* 206 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 207 */ 208 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 209 IWL_DECLARE_RATE_INFO(1), 210 IWL_DECLARE_RATE_INFO(2), 211 IWL_DECLARE_RATE_INFO(5), 212 IWL_DECLARE_RATE_INFO(11), 213 IWL_DECLARE_RATE_INFO(6), 214 IWL_DECLARE_RATE_INFO(9), 215 IWL_DECLARE_RATE_INFO(12), 216 IWL_DECLARE_RATE_INFO(18), 217 IWL_DECLARE_RATE_INFO(24), 218 IWL_DECLARE_RATE_INFO(36), 219 IWL_DECLARE_RATE_INFO(48), 220 IWL_DECLARE_RATE_INFO(54), 221 }; 222 223 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 224 enum nl80211_band band) 225 { 226 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 227 int idx; 228 int band_offset = 0; 229 230 /* Legacy rate format, search for match in table */ 231 if (band == NL80211_BAND_5GHZ) 232 band_offset = IWL_FIRST_OFDM_RATE; 233 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 234 if (fw_rate_idx_to_plcp[idx] == rate) 235 return idx - band_offset; 236 237 return -1; 238 } 239 240 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 241 { 242 /* Get PLCP rate for tx_cmd->rate_n_flags */ 243 return fw_rate_idx_to_plcp[rate_idx]; 244 } 245 246 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 247 { 248 struct iwl_rx_packet *pkt = rxb_addr(rxb); 249 struct iwl_error_resp *err_resp = (void *)pkt->data; 250 251 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 252 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 253 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 254 le16_to_cpu(err_resp->bad_cmd_seq_num), 255 le32_to_cpu(err_resp->error_service)); 256 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n", 257 le64_to_cpu(err_resp->timestamp)); 258 } 259 260 /* 261 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 262 * The parameter should also be a combination of ANT_[ABC]. 263 */ 264 u8 first_antenna(u8 mask) 265 { 266 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 267 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 268 return BIT(0); 269 return BIT(ffs(mask) - 1); 270 } 271 272 /* 273 * Toggles between TX antennas to send the probe request on. 274 * Receives the bitmask of valid TX antennas and the *index* used 275 * for the last TX, and returns the next valid *index* to use. 276 * In order to set it in the tx_cmd, must do BIT(idx). 277 */ 278 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 279 { 280 u8 ind = last_idx; 281 int i; 282 283 for (i = 0; i < MAX_ANT_NUM; i++) { 284 ind = (ind + 1) % MAX_ANT_NUM; 285 if (valid & BIT(ind)) 286 return ind; 287 } 288 289 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 290 return last_idx; 291 } 292 293 static const struct { 294 const char *name; 295 u8 num; 296 } advanced_lookup[] = { 297 { "NMI_INTERRUPT_WDG", 0x34 }, 298 { "SYSASSERT", 0x35 }, 299 { "UCODE_VERSION_MISMATCH", 0x37 }, 300 { "BAD_COMMAND", 0x38 }, 301 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 302 { "FATAL_ERROR", 0x3D }, 303 { "NMI_TRM_HW_ERR", 0x46 }, 304 { "NMI_INTERRUPT_TRM", 0x4C }, 305 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 306 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 307 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 308 { "NMI_INTERRUPT_HOST", 0x66 }, 309 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 310 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 311 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 312 { "ADVANCED_SYSASSERT", 0 }, 313 }; 314 315 static const char *desc_lookup(u32 num) 316 { 317 int i; 318 319 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 320 if (advanced_lookup[i].num == num) 321 return advanced_lookup[i].name; 322 323 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 324 return advanced_lookup[i].name; 325 } 326 327 /* 328 * Note: This structure is read from the device with IO accesses, 329 * and the reading already does the endian conversion. As it is 330 * read with u32-sized accesses, any members with a different size 331 * need to be ordered correctly though! 332 */ 333 struct iwl_error_event_table_v1 { 334 u32 valid; /* (nonzero) valid, (0) log is empty */ 335 u32 error_id; /* type of error */ 336 u32 pc; /* program counter */ 337 u32 blink1; /* branch link */ 338 u32 blink2; /* branch link */ 339 u32 ilink1; /* interrupt link */ 340 u32 ilink2; /* interrupt link */ 341 u32 data1; /* error-specific data */ 342 u32 data2; /* error-specific data */ 343 u32 data3; /* error-specific data */ 344 u32 bcon_time; /* beacon timer */ 345 u32 tsf_low; /* network timestamp function timer */ 346 u32 tsf_hi; /* network timestamp function timer */ 347 u32 gp1; /* GP1 timer register */ 348 u32 gp2; /* GP2 timer register */ 349 u32 gp3; /* GP3 timer register */ 350 u32 ucode_ver; /* uCode version */ 351 u32 hw_ver; /* HW Silicon version */ 352 u32 brd_ver; /* HW board version */ 353 u32 log_pc; /* log program counter */ 354 u32 frame_ptr; /* frame pointer */ 355 u32 stack_ptr; /* stack pointer */ 356 u32 hcmd; /* last host command header */ 357 u32 isr0; /* isr status register LMPM_NIC_ISR0: 358 * rxtx_flag */ 359 u32 isr1; /* isr status register LMPM_NIC_ISR1: 360 * host_flag */ 361 u32 isr2; /* isr status register LMPM_NIC_ISR2: 362 * enc_flag */ 363 u32 isr3; /* isr status register LMPM_NIC_ISR3: 364 * time_flag */ 365 u32 isr4; /* isr status register LMPM_NIC_ISR4: 366 * wico interrupt */ 367 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 368 u32 wait_event; /* wait event() caller address */ 369 u32 l2p_control; /* L2pControlField */ 370 u32 l2p_duration; /* L2pDurationField */ 371 u32 l2p_mhvalid; /* L2pMhValidBits */ 372 u32 l2p_addr_match; /* L2pAddrMatchStat */ 373 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 374 * (LMPM_PMG_SEL) */ 375 u32 u_timestamp; /* indicate when the date and time of the 376 * compilation */ 377 u32 flow_handler; /* FH read/write pointers, RX credit */ 378 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 379 380 struct iwl_error_event_table { 381 u32 valid; /* (nonzero) valid, (0) log is empty */ 382 u32 error_id; /* type of error */ 383 u32 trm_hw_status0; /* TRM HW status */ 384 u32 trm_hw_status1; /* TRM HW status */ 385 u32 blink2; /* branch link */ 386 u32 ilink1; /* interrupt link */ 387 u32 ilink2; /* interrupt link */ 388 u32 data1; /* error-specific data */ 389 u32 data2; /* error-specific data */ 390 u32 data3; /* error-specific data */ 391 u32 bcon_time; /* beacon timer */ 392 u32 tsf_low; /* network timestamp function timer */ 393 u32 tsf_hi; /* network timestamp function timer */ 394 u32 gp1; /* GP1 timer register */ 395 u32 gp2; /* GP2 timer register */ 396 u32 fw_rev_type; /* firmware revision type */ 397 u32 major; /* uCode version major */ 398 u32 minor; /* uCode version minor */ 399 u32 hw_ver; /* HW Silicon version */ 400 u32 brd_ver; /* HW board version */ 401 u32 log_pc; /* log program counter */ 402 u32 frame_ptr; /* frame pointer */ 403 u32 stack_ptr; /* stack pointer */ 404 u32 hcmd; /* last host command header */ 405 u32 isr0; /* isr status register LMPM_NIC_ISR0: 406 * rxtx_flag */ 407 u32 isr1; /* isr status register LMPM_NIC_ISR1: 408 * host_flag */ 409 u32 isr2; /* isr status register LMPM_NIC_ISR2: 410 * enc_flag */ 411 u32 isr3; /* isr status register LMPM_NIC_ISR3: 412 * time_flag */ 413 u32 isr4; /* isr status register LMPM_NIC_ISR4: 414 * wico interrupt */ 415 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 416 u32 wait_event; /* wait event() caller address */ 417 u32 l2p_control; /* L2pControlField */ 418 u32 l2p_duration; /* L2pDurationField */ 419 u32 l2p_mhvalid; /* L2pMhValidBits */ 420 u32 l2p_addr_match; /* L2pAddrMatchStat */ 421 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 422 * (LMPM_PMG_SEL) */ 423 u32 u_timestamp; /* indicate when the date and time of the 424 * compilation */ 425 u32 flow_handler; /* FH read/write pointers, RX credit */ 426 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 427 428 /* 429 * UMAC error struct - relevant starting from family 8000 chip. 430 * Note: This structure is read from the device with IO accesses, 431 * and the reading already does the endian conversion. As it is 432 * read with u32-sized accesses, any members with a different size 433 * need to be ordered correctly though! 434 */ 435 struct iwl_umac_error_event_table { 436 u32 valid; /* (nonzero) valid, (0) log is empty */ 437 u32 error_id; /* type of error */ 438 u32 blink1; /* branch link */ 439 u32 blink2; /* branch link */ 440 u32 ilink1; /* interrupt link */ 441 u32 ilink2; /* interrupt link */ 442 u32 data1; /* error-specific data */ 443 u32 data2; /* error-specific data */ 444 u32 data3; /* error-specific data */ 445 u32 umac_major; 446 u32 umac_minor; 447 u32 frame_pointer; /* core register 27*/ 448 u32 stack_pointer; /* core register 28 */ 449 u32 cmd_header; /* latest host cmd sent to UMAC */ 450 u32 nic_isr_pref; /* ISR status register */ 451 } __packed; 452 453 #define ERROR_START_OFFSET (1 * sizeof(u32)) 454 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 455 456 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 457 { 458 struct iwl_trans *trans = mvm->trans; 459 struct iwl_umac_error_event_table table; 460 461 if (!mvm->support_umac_log) 462 return; 463 464 iwl_trans_read_mem_bytes(trans, mvm->umac_error_event_table, &table, 465 sizeof(table)); 466 467 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 468 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 469 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 470 mvm->status, table.valid); 471 } 472 473 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 474 desc_lookup(table.error_id)); 475 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 476 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 477 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 478 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 479 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 480 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 481 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 482 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 483 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 484 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 485 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 486 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 487 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 488 } 489 490 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base) 491 { 492 struct iwl_trans *trans = mvm->trans; 493 struct iwl_error_event_table table; 494 u32 val; 495 496 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 497 if (!base) 498 base = mvm->fw->init_errlog_ptr; 499 } else { 500 if (!base) 501 base = mvm->fw->inst_errlog_ptr; 502 } 503 504 if (base < 0x400000) { 505 IWL_ERR(mvm, 506 "Not valid error log pointer 0x%08X for %s uCode\n", 507 base, 508 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 509 ? "Init" : "RT"); 510 return; 511 } 512 513 /* check if there is a HW error */ 514 val = iwl_trans_read_mem32(trans, base); 515 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 516 int err; 517 518 IWL_ERR(trans, "HW error, resetting before reading\n"); 519 520 /* reset the device */ 521 iwl_trans_sw_reset(trans); 522 523 /* set INIT_DONE flag */ 524 iwl_set_bit(trans, CSR_GP_CNTRL, 525 BIT(trans->cfg->csr->flag_init_done)); 526 527 /* and wait for clock stabilization */ 528 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) 529 udelay(2); 530 531 err = iwl_poll_bit(trans, CSR_GP_CNTRL, 532 BIT(trans->cfg->csr->flag_mac_clock_ready), 533 BIT(trans->cfg->csr->flag_mac_clock_ready), 534 25000); 535 if (err < 0) { 536 IWL_DEBUG_INFO(trans, 537 "Failed to reset the card for the dump\n"); 538 return; 539 } 540 } 541 542 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 543 544 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 545 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 546 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 547 mvm->status, table.valid); 548 } 549 550 /* Do not change this output - scripts rely on it */ 551 552 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 553 554 trace_iwlwifi_dev_ucode_error(trans->dev, &table, table.hw_ver, table.brd_ver); 555 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 556 desc_lookup(table.error_id)); 557 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 558 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 559 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 560 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 561 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 562 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 563 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 564 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 565 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 566 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 567 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 568 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 569 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 570 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 571 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 572 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 573 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 574 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 575 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 576 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 577 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 578 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 579 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 580 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 581 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 582 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 583 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 584 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 585 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 586 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 587 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 588 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 589 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 590 } 591 592 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 593 { 594 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 595 IWL_ERR(mvm, 596 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 597 return; 598 } 599 600 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]); 601 602 if (mvm->error_event_table[1]) 603 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]); 604 605 iwl_mvm_dump_umac_error_log(mvm); 606 } 607 608 int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq) 609 { 610 int i; 611 612 lockdep_assert_held(&mvm->queue_info_lock); 613 614 /* This should not be hit with new TX path */ 615 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 616 return -ENOSPC; 617 618 /* Start by looking for a free queue */ 619 for (i = minq; i <= maxq; i++) 620 if (mvm->queue_info[i].hw_queue_refcount == 0 && 621 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 622 return i; 623 624 /* 625 * If no free queue found - settle for an inactive one to reconfigure 626 * Make sure that the inactive queue either already belongs to this STA, 627 * or that if it belongs to another one - it isn't the reserved queue 628 */ 629 for (i = minq; i <= maxq; i++) 630 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE && 631 (sta_id == mvm->queue_info[i].ra_sta_id || 632 !mvm->queue_info[i].reserved)) 633 return i; 634 635 return -ENOSPC; 636 } 637 638 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 639 int tid, int frame_limit, u16 ssn) 640 { 641 struct iwl_scd_txq_cfg_cmd cmd = { 642 .scd_queue = queue, 643 .action = SCD_CFG_ENABLE_QUEUE, 644 .window = frame_limit, 645 .sta_id = sta_id, 646 .ssn = cpu_to_le16(ssn), 647 .tx_fifo = fifo, 648 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 649 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 650 .tid = tid, 651 }; 652 int ret; 653 654 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 655 return -EINVAL; 656 657 spin_lock_bh(&mvm->queue_info_lock); 658 if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0, 659 "Trying to reconfig unallocated queue %d\n", queue)) { 660 spin_unlock_bh(&mvm->queue_info_lock); 661 return -ENXIO; 662 } 663 spin_unlock_bh(&mvm->queue_info_lock); 664 665 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 666 667 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 668 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 669 queue, fifo, ret); 670 671 return ret; 672 } 673 674 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue, 675 int mac80211_queue, u8 sta_id, u8 tid) 676 { 677 bool enable_queue = true; 678 679 spin_lock_bh(&mvm->queue_info_lock); 680 681 /* Make sure this TID isn't already enabled */ 682 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 683 spin_unlock_bh(&mvm->queue_info_lock); 684 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 685 queue, tid); 686 return false; 687 } 688 689 /* Update mappings and refcounts */ 690 if (mvm->queue_info[queue].hw_queue_refcount > 0) 691 enable_queue = false; 692 693 if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) { 694 WARN(mac80211_queue >= 695 BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]), 696 "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n", 697 mac80211_queue, queue, sta_id, tid); 698 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 699 } 700 701 mvm->queue_info[queue].hw_queue_refcount++; 702 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 703 mvm->queue_info[queue].ra_sta_id = sta_id; 704 705 if (enable_queue) { 706 if (tid != IWL_MAX_TID_COUNT) 707 mvm->queue_info[queue].mac80211_ac = 708 tid_to_mac80211_ac[tid]; 709 else 710 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 711 712 mvm->queue_info[queue].txq_tid = tid; 713 } 714 715 IWL_DEBUG_TX_QUEUES(mvm, 716 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n", 717 queue, mvm->queue_info[queue].hw_queue_refcount, 718 mvm->hw_queue_to_mac80211[queue]); 719 720 spin_unlock_bh(&mvm->queue_info_lock); 721 722 return enable_queue; 723 } 724 725 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue, 726 u8 sta_id, u8 tid, unsigned int timeout) 727 { 728 struct iwl_tx_queue_cfg_cmd cmd = { 729 .flags = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), 730 .sta_id = sta_id, 731 .tid = tid, 732 }; 733 int queue, size = IWL_DEFAULT_QUEUE_SIZE; 734 735 if (cmd.tid == IWL_MAX_TID_COUNT) { 736 cmd.tid = IWL_MGMT_TID; 737 size = IWL_MGMT_QUEUE_SIZE; 738 } 739 queue = iwl_trans_txq_alloc(mvm->trans, (void *)&cmd, 740 SCD_QUEUE_CFG, size, timeout); 741 742 if (queue < 0) { 743 IWL_DEBUG_TX_QUEUES(mvm, 744 "Failed allocating TXQ for sta %d tid %d, ret: %d\n", 745 sta_id, tid, queue); 746 return queue; 747 } 748 749 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 750 queue, sta_id, tid); 751 752 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 753 IWL_DEBUG_TX_QUEUES(mvm, 754 "Enabling TXQ #%d (mac80211 map:0x%x)\n", 755 queue, mvm->hw_queue_to_mac80211[queue]); 756 757 return queue; 758 } 759 760 bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, 761 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg, 762 unsigned int wdg_timeout) 763 { 764 struct iwl_scd_txq_cfg_cmd cmd = { 765 .scd_queue = queue, 766 .action = SCD_CFG_ENABLE_QUEUE, 767 .window = cfg->frame_limit, 768 .sta_id = cfg->sta_id, 769 .ssn = cpu_to_le16(ssn), 770 .tx_fifo = cfg->fifo, 771 .aggregate = cfg->aggregate, 772 .tid = cfg->tid, 773 }; 774 bool inc_ssn; 775 776 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 777 return false; 778 779 /* Send the enabling command if we need to */ 780 if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue, 781 cfg->sta_id, cfg->tid)) 782 return false; 783 784 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 785 NULL, wdg_timeout); 786 if (inc_ssn) 787 le16_add_cpu(&cmd.ssn, 1); 788 789 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 790 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 791 792 return inc_ssn; 793 } 794 795 int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, 796 u8 tid, u8 flags) 797 { 798 struct iwl_scd_txq_cfg_cmd cmd = { 799 .scd_queue = queue, 800 .action = SCD_CFG_DISABLE_QUEUE, 801 }; 802 bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE; 803 int ret; 804 805 if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES)) 806 return -EINVAL; 807 808 if (iwl_mvm_has_new_tx_api(mvm)) { 809 spin_lock_bh(&mvm->queue_info_lock); 810 811 if (remove_mac_queue) 812 mvm->hw_queue_to_mac80211[queue] &= 813 ~BIT(mac80211_queue); 814 815 spin_unlock_bh(&mvm->queue_info_lock); 816 817 iwl_trans_txq_free(mvm->trans, queue); 818 819 return 0; 820 } 821 822 spin_lock_bh(&mvm->queue_info_lock); 823 824 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) { 825 spin_unlock_bh(&mvm->queue_info_lock); 826 return 0; 827 } 828 829 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 830 831 /* 832 * If there is another TID with the same AC - don't remove the MAC queue 833 * from the mapping 834 */ 835 if (tid < IWL_MAX_TID_COUNT) { 836 unsigned long tid_bitmap = 837 mvm->queue_info[queue].tid_bitmap; 838 int ac = tid_to_mac80211_ac[tid]; 839 int i; 840 841 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) { 842 if (tid_to_mac80211_ac[i] == ac) 843 remove_mac_queue = false; 844 } 845 } 846 847 if (remove_mac_queue) 848 mvm->hw_queue_to_mac80211[queue] &= 849 ~BIT(mac80211_queue); 850 mvm->queue_info[queue].hw_queue_refcount--; 851 852 cmd.action = mvm->queue_info[queue].hw_queue_refcount ? 853 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 854 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 855 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 856 857 IWL_DEBUG_TX_QUEUES(mvm, 858 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n", 859 queue, 860 mvm->queue_info[queue].hw_queue_refcount, 861 mvm->hw_queue_to_mac80211[queue]); 862 863 /* If the queue is still enabled - nothing left to do in this func */ 864 if (cmd.action == SCD_CFG_ENABLE_QUEUE) { 865 spin_unlock_bh(&mvm->queue_info_lock); 866 return 0; 867 } 868 869 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 870 cmd.tid = mvm->queue_info[queue].txq_tid; 871 872 /* Make sure queue info is correct even though we overwrite it */ 873 WARN(mvm->queue_info[queue].hw_queue_refcount || 874 mvm->queue_info[queue].tid_bitmap || 875 mvm->hw_queue_to_mac80211[queue], 876 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n", 877 queue, mvm->queue_info[queue].hw_queue_refcount, 878 mvm->hw_queue_to_mac80211[queue], 879 mvm->queue_info[queue].tid_bitmap); 880 881 /* If we are here - the queue is freed and we can zero out these vals */ 882 mvm->queue_info[queue].hw_queue_refcount = 0; 883 mvm->queue_info[queue].tid_bitmap = 0; 884 mvm->hw_queue_to_mac80211[queue] = 0; 885 886 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 887 mvm->queue_info[queue].reserved = false; 888 889 spin_unlock_bh(&mvm->queue_info_lock); 890 891 iwl_trans_txq_disable(mvm->trans, queue, false); 892 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 893 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 894 895 if (ret) 896 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 897 queue, ret); 898 return ret; 899 } 900 901 /** 902 * iwl_mvm_send_lq_cmd() - Send link quality command 903 * @init: This command is sent as part of station initialization right 904 * after station has been added. 905 * 906 * The link quality command is sent as the last step of station creation. 907 * This is the special case in which init is set and we call a callback in 908 * this case to clear the state indicating that station creation is in 909 * progress. 910 */ 911 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init) 912 { 913 struct iwl_host_cmd cmd = { 914 .id = LQ_CMD, 915 .len = { sizeof(struct iwl_lq_cmd), }, 916 .flags = init ? 0 : CMD_ASYNC, 917 .data = { lq, }, 918 }; 919 920 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 921 iwl_mvm_has_tlc_offload(mvm))) 922 return -EINVAL; 923 924 return iwl_mvm_send_cmd(mvm, &cmd); 925 } 926 927 /** 928 * iwl_mvm_update_smps - Get a request to change the SMPS mode 929 * @req_type: The part of the driver who call for a change. 930 * @smps_requests: The request to change the SMPS mode. 931 * 932 * Get a requst to change the SMPS mode, 933 * and change it according to all other requests in the driver. 934 */ 935 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 936 enum iwl_mvm_smps_type_request req_type, 937 enum ieee80211_smps_mode smps_request) 938 { 939 struct iwl_mvm_vif *mvmvif; 940 enum ieee80211_smps_mode smps_mode; 941 int i; 942 943 lockdep_assert_held(&mvm->mutex); 944 945 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 946 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 947 return; 948 949 if (vif->type == NL80211_IFTYPE_AP) 950 smps_mode = IEEE80211_SMPS_OFF; 951 else 952 smps_mode = IEEE80211_SMPS_AUTOMATIC; 953 954 mvmvif = iwl_mvm_vif_from_mac80211(vif); 955 mvmvif->smps_requests[req_type] = smps_request; 956 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 957 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 958 smps_mode = IEEE80211_SMPS_STATIC; 959 break; 960 } 961 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 962 smps_mode = IEEE80211_SMPS_DYNAMIC; 963 } 964 965 ieee80211_request_smps(vif, smps_mode); 966 } 967 968 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 969 { 970 struct iwl_statistics_cmd scmd = { 971 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 972 }; 973 struct iwl_host_cmd cmd = { 974 .id = STATISTICS_CMD, 975 .len[0] = sizeof(scmd), 976 .data[0] = &scmd, 977 .flags = CMD_WANT_SKB, 978 }; 979 int ret; 980 981 ret = iwl_mvm_send_cmd(mvm, &cmd); 982 if (ret) 983 return ret; 984 985 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 986 iwl_free_resp(&cmd); 987 988 if (clear) 989 iwl_mvm_accu_radio_stats(mvm); 990 991 return 0; 992 } 993 994 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 995 { 996 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 997 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 998 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 999 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 1000 } 1001 1002 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 1003 struct ieee80211_vif *vif) 1004 { 1005 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1006 bool *result = _data; 1007 int i; 1008 1009 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 1010 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 1011 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 1012 *result = false; 1013 } 1014 } 1015 1016 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 1017 { 1018 bool result = true; 1019 1020 lockdep_assert_held(&mvm->mutex); 1021 1022 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 1023 return false; 1024 1025 if (mvm->cfg->rx_with_siso_diversity) 1026 return false; 1027 1028 ieee80211_iterate_active_interfaces_atomic( 1029 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1030 iwl_mvm_diversity_iter, &result); 1031 1032 return result; 1033 } 1034 1035 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1036 bool low_latency, 1037 enum iwl_mvm_low_latency_cause cause) 1038 { 1039 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1040 int res; 1041 bool prev; 1042 1043 lockdep_assert_held(&mvm->mutex); 1044 1045 prev = iwl_mvm_vif_low_latency(mvmvif); 1046 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 1047 1048 low_latency = iwl_mvm_vif_low_latency(mvmvif); 1049 1050 if (low_latency == prev) 1051 return 0; 1052 1053 if (fw_has_capa(&mvm->fw->ucode_capa, 1054 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) { 1055 struct iwl_mac_low_latency_cmd cmd = { 1056 .mac_id = cpu_to_le32(mvmvif->id) 1057 }; 1058 1059 if (low_latency) { 1060 /* currently we don't care about the direction */ 1061 cmd.low_latency_rx = 1; 1062 cmd.low_latency_tx = 1; 1063 } 1064 res = iwl_mvm_send_cmd_pdu(mvm, 1065 iwl_cmd_id(LOW_LATENCY_CMD, 1066 MAC_CONF_GROUP, 0), 1067 0, sizeof(cmd), &cmd); 1068 if (res) 1069 IWL_ERR(mvm, "Failed to send low latency command\n"); 1070 } 1071 1072 res = iwl_mvm_update_quotas(mvm, false, NULL); 1073 if (res) 1074 return res; 1075 1076 iwl_mvm_bt_coex_vif_change(mvm); 1077 1078 return iwl_mvm_power_update_mac(mvm); 1079 } 1080 1081 struct iwl_mvm_low_latency_iter { 1082 bool result; 1083 bool result_per_band[NUM_NL80211_BANDS]; 1084 }; 1085 1086 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1087 { 1088 struct iwl_mvm_low_latency_iter *result = _data; 1089 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1090 enum nl80211_band band; 1091 1092 if (iwl_mvm_vif_low_latency(mvmvif)) { 1093 result->result = true; 1094 1095 if (!mvmvif->phy_ctxt) 1096 return; 1097 1098 band = mvmvif->phy_ctxt->channel->band; 1099 result->result_per_band[band] = true; 1100 } 1101 } 1102 1103 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 1104 { 1105 struct iwl_mvm_low_latency_iter data = {}; 1106 1107 ieee80211_iterate_active_interfaces_atomic( 1108 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1109 iwl_mvm_ll_iter, &data); 1110 1111 return data.result; 1112 } 1113 1114 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 1115 { 1116 struct iwl_mvm_low_latency_iter data = {}; 1117 1118 ieee80211_iterate_active_interfaces_atomic( 1119 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1120 iwl_mvm_ll_iter, &data); 1121 1122 return data.result_per_band[band]; 1123 } 1124 1125 struct iwl_bss_iter_data { 1126 struct ieee80211_vif *vif; 1127 bool error; 1128 }; 1129 1130 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 1131 struct ieee80211_vif *vif) 1132 { 1133 struct iwl_bss_iter_data *data = _data; 1134 1135 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 1136 return; 1137 1138 if (data->vif) { 1139 data->error = true; 1140 return; 1141 } 1142 1143 data->vif = vif; 1144 } 1145 1146 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 1147 { 1148 struct iwl_bss_iter_data bss_iter_data = {}; 1149 1150 ieee80211_iterate_active_interfaces_atomic( 1151 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1152 iwl_mvm_bss_iface_iterator, &bss_iter_data); 1153 1154 if (bss_iter_data.error) { 1155 IWL_ERR(mvm, "More than one managed interface active!\n"); 1156 return ERR_PTR(-EINVAL); 1157 } 1158 1159 return bss_iter_data.vif; 1160 } 1161 1162 struct iwl_sta_iter_data { 1163 bool assoc; 1164 }; 1165 1166 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 1167 struct ieee80211_vif *vif) 1168 { 1169 struct iwl_sta_iter_data *data = _data; 1170 1171 if (vif->type != NL80211_IFTYPE_STATION) 1172 return; 1173 1174 if (vif->bss_conf.assoc) 1175 data->assoc = true; 1176 } 1177 1178 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 1179 { 1180 struct iwl_sta_iter_data data = { 1181 .assoc = false, 1182 }; 1183 1184 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1185 IEEE80211_IFACE_ITER_NORMAL, 1186 iwl_mvm_sta_iface_iterator, 1187 &data); 1188 return data.assoc; 1189 } 1190 1191 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 1192 struct ieee80211_vif *vif, 1193 bool tdls, bool cmd_q) 1194 { 1195 struct iwl_fw_dbg_trigger_tlv *trigger; 1196 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 1197 unsigned int default_timeout = 1198 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 1199 1200 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 1201 /* 1202 * We can't know when the station is asleep or awake, so we 1203 * must disable the queue hang detection. 1204 */ 1205 if (fw_has_capa(&mvm->fw->ucode_capa, 1206 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 1207 vif && vif->type == NL80211_IFTYPE_AP) 1208 return IWL_WATCHDOG_DISABLED; 1209 return iwlmvm_mod_params.tfd_q_hang_detect ? 1210 default_timeout : IWL_WATCHDOG_DISABLED; 1211 } 1212 1213 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 1214 txq_timer = (void *)trigger->data; 1215 1216 if (tdls) 1217 return le32_to_cpu(txq_timer->tdls); 1218 1219 if (cmd_q) 1220 return le32_to_cpu(txq_timer->command_queue); 1221 1222 if (WARN_ON(!vif)) 1223 return default_timeout; 1224 1225 switch (ieee80211_vif_type_p2p(vif)) { 1226 case NL80211_IFTYPE_ADHOC: 1227 return le32_to_cpu(txq_timer->ibss); 1228 case NL80211_IFTYPE_STATION: 1229 return le32_to_cpu(txq_timer->bss); 1230 case NL80211_IFTYPE_AP: 1231 return le32_to_cpu(txq_timer->softap); 1232 case NL80211_IFTYPE_P2P_CLIENT: 1233 return le32_to_cpu(txq_timer->p2p_client); 1234 case NL80211_IFTYPE_P2P_GO: 1235 return le32_to_cpu(txq_timer->p2p_go); 1236 case NL80211_IFTYPE_P2P_DEVICE: 1237 return le32_to_cpu(txq_timer->p2p_device); 1238 case NL80211_IFTYPE_MONITOR: 1239 return default_timeout; 1240 default: 1241 WARN_ON(1); 1242 return mvm->cfg->base_params->wd_timeout; 1243 } 1244 } 1245 1246 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1247 const char *errmsg) 1248 { 1249 struct iwl_fw_dbg_trigger_tlv *trig; 1250 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 1251 1252 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 1253 goto out; 1254 1255 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 1256 trig_mlme = (void *)trig->data; 1257 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 1258 ieee80211_vif_to_wdev(vif), trig)) 1259 goto out; 1260 1261 if (trig_mlme->stop_connection_loss && 1262 --trig_mlme->stop_connection_loss) 1263 goto out; 1264 1265 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1266 1267 out: 1268 ieee80211_connection_loss(vif); 1269 } 1270 1271 /* 1272 * Remove inactive TIDs of a given queue. 1273 * If all queue TIDs are inactive - mark the queue as inactive 1274 * If only some the queue TIDs are inactive - unmap them from the queue 1275 */ 1276 static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1277 struct iwl_mvm_sta *mvmsta, int queue, 1278 unsigned long tid_bitmap) 1279 { 1280 int tid; 1281 1282 lockdep_assert_held(&mvmsta->lock); 1283 lockdep_assert_held(&mvm->queue_info_lock); 1284 1285 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1286 return; 1287 1288 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1289 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1290 /* If some TFDs are still queued - don't mark TID as inactive */ 1291 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1292 tid_bitmap &= ~BIT(tid); 1293 1294 /* Don't mark as inactive any TID that has an active BA */ 1295 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1296 tid_bitmap &= ~BIT(tid); 1297 } 1298 1299 /* If all TIDs in the queue are inactive - mark queue as inactive. */ 1300 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1301 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 1302 1303 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) 1304 mvmsta->tid_data[tid].is_tid_active = false; 1305 1306 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n", 1307 queue); 1308 return; 1309 } 1310 1311 /* 1312 * If we are here, this is a shared queue and not all TIDs timed-out. 1313 * Remove the ones that did. 1314 */ 1315 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1316 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]; 1317 1318 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1319 mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue); 1320 mvm->queue_info[queue].hw_queue_refcount--; 1321 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1322 mvmsta->tid_data[tid].is_tid_active = false; 1323 1324 IWL_DEBUG_TX_QUEUES(mvm, 1325 "Removing inactive TID %d from shared Q:%d\n", 1326 tid, queue); 1327 } 1328 1329 IWL_DEBUG_TX_QUEUES(mvm, 1330 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1331 mvm->queue_info[queue].tid_bitmap); 1332 1333 /* 1334 * There may be different TIDs with the same mac queues, so make 1335 * sure all TIDs have existing corresponding mac queues enabled 1336 */ 1337 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1338 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1339 mvm->hw_queue_to_mac80211[queue] |= 1340 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]); 1341 } 1342 1343 /* If the queue is marked as shared - "unshare" it */ 1344 if (mvm->queue_info[queue].hw_queue_refcount == 1 && 1345 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1346 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING; 1347 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1348 queue); 1349 } 1350 } 1351 1352 void iwl_mvm_inactivity_check(struct iwl_mvm *mvm) 1353 { 1354 unsigned long timeout_queues_map = 0; 1355 unsigned long now = jiffies; 1356 int i; 1357 1358 if (iwl_mvm_has_new_tx_api(mvm)) 1359 return; 1360 1361 spin_lock_bh(&mvm->queue_info_lock); 1362 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1363 if (mvm->queue_info[i].hw_queue_refcount > 0) 1364 timeout_queues_map |= BIT(i); 1365 spin_unlock_bh(&mvm->queue_info_lock); 1366 1367 rcu_read_lock(); 1368 1369 /* 1370 * If a queue time outs - mark it as INACTIVE (don't remove right away 1371 * if we don't have to.) This is an optimization in case traffic comes 1372 * later, and we don't HAVE to use a currently-inactive queue 1373 */ 1374 for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) { 1375 struct ieee80211_sta *sta; 1376 struct iwl_mvm_sta *mvmsta; 1377 u8 sta_id; 1378 int tid; 1379 unsigned long inactive_tid_bitmap = 0; 1380 unsigned long queue_tid_bitmap; 1381 1382 spin_lock_bh(&mvm->queue_info_lock); 1383 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1384 1385 /* If TXQ isn't in active use anyway - nothing to do here... */ 1386 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1387 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) { 1388 spin_unlock_bh(&mvm->queue_info_lock); 1389 continue; 1390 } 1391 1392 /* Check to see if there are inactive TIDs on this queue */ 1393 for_each_set_bit(tid, &queue_tid_bitmap, 1394 IWL_MAX_TID_COUNT + 1) { 1395 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1396 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1397 continue; 1398 1399 inactive_tid_bitmap |= BIT(tid); 1400 } 1401 spin_unlock_bh(&mvm->queue_info_lock); 1402 1403 /* If all TIDs are active - finish check on this queue */ 1404 if (!inactive_tid_bitmap) 1405 continue; 1406 1407 /* 1408 * If we are here - the queue hadn't been served recently and is 1409 * in use 1410 */ 1411 1412 sta_id = mvm->queue_info[i].ra_sta_id; 1413 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1414 1415 /* 1416 * If the STA doesn't exist anymore, it isn't an error. It could 1417 * be that it was removed since getting the queues, and in this 1418 * case it should've inactivated its queues anyway. 1419 */ 1420 if (IS_ERR_OR_NULL(sta)) 1421 continue; 1422 1423 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1424 1425 spin_lock_bh(&mvmsta->lock); 1426 spin_lock(&mvm->queue_info_lock); 1427 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1428 inactive_tid_bitmap); 1429 spin_unlock(&mvm->queue_info_lock); 1430 spin_unlock_bh(&mvmsta->lock); 1431 } 1432 1433 rcu_read_unlock(); 1434 } 1435 1436 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1437 struct ieee80211_vif *vif, 1438 const struct ieee80211_sta *sta, 1439 u16 tid) 1440 { 1441 struct iwl_fw_dbg_trigger_tlv *trig; 1442 struct iwl_fw_dbg_trigger_ba *ba_trig; 1443 1444 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 1445 return; 1446 1447 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 1448 ba_trig = (void *)trig->data; 1449 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 1450 ieee80211_vif_to_wdev(vif), trig)) 1451 return; 1452 1453 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1454 return; 1455 1456 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1457 "Frame from %pM timed out, tid %d", 1458 sta->addr, tid); 1459 } 1460 1461 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1462 { 1463 if (!elapsed) 1464 return 0; 1465 1466 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1467 } 1468 1469 static enum iwl_mvm_traffic_load 1470 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1471 { 1472 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1473 1474 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1475 return IWL_MVM_TRAFFIC_HIGH; 1476 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1477 return IWL_MVM_TRAFFIC_MEDIUM; 1478 1479 return IWL_MVM_TRAFFIC_LOW; 1480 } 1481 1482 struct iwl_mvm_tcm_iter_data { 1483 struct iwl_mvm *mvm; 1484 bool any_sent; 1485 }; 1486 1487 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1488 { 1489 struct iwl_mvm_tcm_iter_data *data = _data; 1490 struct iwl_mvm *mvm = data->mvm; 1491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1492 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1493 1494 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1495 return; 1496 1497 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1498 1499 if (!mvm->tcm.result.change[mvmvif->id] && 1500 prev == low_latency) { 1501 iwl_mvm_update_quotas(mvm, false, NULL); 1502 return; 1503 } 1504 1505 if (prev != low_latency) { 1506 /* this sends traffic load and updates quota as well */ 1507 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1508 LOW_LATENCY_TRAFFIC); 1509 } else { 1510 iwl_mvm_update_quotas(mvm, false, NULL); 1511 } 1512 1513 data->any_sent = true; 1514 } 1515 1516 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1517 { 1518 struct iwl_mvm_tcm_iter_data data = { 1519 .mvm = mvm, 1520 .any_sent = false, 1521 }; 1522 1523 mutex_lock(&mvm->mutex); 1524 1525 ieee80211_iterate_active_interfaces( 1526 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1527 iwl_mvm_tcm_iter, &data); 1528 1529 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1530 iwl_mvm_config_scan(mvm); 1531 1532 mutex_unlock(&mvm->mutex); 1533 } 1534 1535 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1536 { 1537 struct iwl_mvm *mvm; 1538 struct iwl_mvm_vif *mvmvif; 1539 struct ieee80211_vif *vif; 1540 1541 mvmvif = container_of(wk, struct iwl_mvm_vif, 1542 uapsd_nonagg_detected_wk.work); 1543 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1544 mvm = mvmvif->mvm; 1545 1546 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1547 return; 1548 1549 /* remember that this AP is broken */ 1550 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1551 vif->bss_conf.bssid, ETH_ALEN); 1552 mvm->uapsd_noagg_bssid_write_idx++; 1553 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1554 mvm->uapsd_noagg_bssid_write_idx = 0; 1555 1556 iwl_mvm_connection_loss(mvm, vif, 1557 "AP isn't using AMPDU with uAPSD enabled"); 1558 } 1559 1560 static void iwl_mvm_uapsd_agg_disconnect_iter(void *data, u8 *mac, 1561 struct ieee80211_vif *vif) 1562 { 1563 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1564 struct iwl_mvm *mvm = mvmvif->mvm; 1565 int *mac_id = data; 1566 1567 if (vif->type != NL80211_IFTYPE_STATION) 1568 return; 1569 1570 if (mvmvif->id != *mac_id) 1571 return; 1572 1573 if (!vif->bss_conf.assoc) 1574 return; 1575 1576 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1577 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1578 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1579 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1580 return; 1581 1582 if (mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected) 1583 return; 1584 1585 mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected = true; 1586 IWL_INFO(mvm, 1587 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1588 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1589 } 1590 1591 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1592 unsigned int elapsed, 1593 int mac) 1594 { 1595 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1596 u64 tpt; 1597 unsigned long rate; 1598 1599 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1600 1601 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1602 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1603 return; 1604 1605 if (iwl_mvm_has_new_rx_api(mvm)) { 1606 tpt = 8 * bytes; /* kbps */ 1607 do_div(tpt, elapsed); 1608 rate *= 1000; /* kbps */ 1609 if (tpt < 22 * rate / 100) 1610 return; 1611 } else { 1612 /* 1613 * the rate here is actually the threshold, in 100Kbps units, 1614 * so do the needed conversion from bytes to 100Kbps: 1615 * 100kb = bits / (100 * 1000), 1616 * 100kbps = 100kb / (msecs / 1000) == 1617 * (bits / (100 * 1000)) / (msecs / 1000) == 1618 * bits / (100 * msecs) 1619 */ 1620 tpt = (8 * bytes); 1621 do_div(tpt, elapsed * 100); 1622 if (tpt < rate) 1623 return; 1624 } 1625 1626 ieee80211_iterate_active_interfaces_atomic( 1627 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1628 iwl_mvm_uapsd_agg_disconnect_iter, &mac); 1629 } 1630 1631 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1632 struct ieee80211_vif *vif) 1633 { 1634 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1635 u32 *band = _data; 1636 1637 if (!mvmvif->phy_ctxt) 1638 return; 1639 1640 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1641 } 1642 1643 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1644 unsigned long ts, 1645 bool handle_uapsd) 1646 { 1647 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1648 unsigned int uapsd_elapsed = 1649 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1650 u32 total_airtime = 0; 1651 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1652 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1653 int ac, mac, i; 1654 bool low_latency = false; 1655 enum iwl_mvm_traffic_load load, band_load; 1656 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1657 1658 if (handle_ll) 1659 mvm->tcm.ll_ts = ts; 1660 if (handle_uapsd) 1661 mvm->tcm.uapsd_nonagg_ts = ts; 1662 1663 mvm->tcm.result.elapsed = elapsed; 1664 1665 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1666 IEEE80211_IFACE_ITER_NORMAL, 1667 iwl_mvm_tcm_iterator, 1668 &band); 1669 1670 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1671 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1672 u32 vo_vi_pkts = 0; 1673 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1674 1675 total_airtime += airtime; 1676 band_airtime[band[mac]] += airtime; 1677 1678 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1679 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1680 mvm->tcm.result.load[mac] = load; 1681 mvm->tcm.result.airtime[mac] = airtime; 1682 1683 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1684 vo_vi_pkts += mdata->rx.pkts[ac] + 1685 mdata->tx.pkts[ac]; 1686 1687 /* enable immediately with enough packets but defer disabling */ 1688 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1689 mvm->tcm.result.low_latency[mac] = true; 1690 else if (handle_ll) 1691 mvm->tcm.result.low_latency[mac] = false; 1692 1693 if (handle_ll) { 1694 /* clear old data */ 1695 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1696 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1697 } 1698 low_latency |= mvm->tcm.result.low_latency[mac]; 1699 1700 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1701 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1702 mac); 1703 /* clear old data */ 1704 if (handle_uapsd) 1705 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1706 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1707 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1708 } 1709 1710 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1711 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1712 mvm->tcm.result.global_load = load; 1713 1714 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1715 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1716 mvm->tcm.result.band_load[i] = band_load; 1717 } 1718 1719 /* 1720 * If the current load isn't low we need to force re-evaluation 1721 * in the TCM period, so that we can return to low load if there 1722 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1723 * triggered by traffic). 1724 */ 1725 if (load != IWL_MVM_TRAFFIC_LOW) 1726 return MVM_TCM_PERIOD; 1727 /* 1728 * If low-latency is active we need to force re-evaluation after 1729 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1730 * when there's no traffic at all. 1731 */ 1732 if (low_latency) 1733 return MVM_LL_PERIOD; 1734 /* 1735 * Otherwise, we don't need to run the work struct because we're 1736 * in the default "idle" state - traffic indication is low (which 1737 * also covers the "no traffic" case) and low-latency is disabled 1738 * so there's no state that may need to be disabled when there's 1739 * no traffic at all. 1740 * 1741 * Note that this has no impact on the regular scheduling of the 1742 * updates triggered by traffic - those happen whenever one of the 1743 * two timeouts expire (if there's traffic at all.) 1744 */ 1745 return 0; 1746 } 1747 1748 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1749 { 1750 unsigned long ts = jiffies; 1751 bool handle_uapsd = 1752 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1753 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1754 1755 spin_lock(&mvm->tcm.lock); 1756 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1757 spin_unlock(&mvm->tcm.lock); 1758 return; 1759 } 1760 spin_unlock(&mvm->tcm.lock); 1761 1762 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1763 mutex_lock(&mvm->mutex); 1764 if (iwl_mvm_request_statistics(mvm, true)) 1765 handle_uapsd = false; 1766 mutex_unlock(&mvm->mutex); 1767 } 1768 1769 spin_lock(&mvm->tcm.lock); 1770 /* re-check if somebody else won the recheck race */ 1771 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1772 /* calculate statistics */ 1773 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1774 handle_uapsd); 1775 1776 /* the memset needs to be visible before the timestamp */ 1777 smp_mb(); 1778 mvm->tcm.ts = ts; 1779 if (work_delay) 1780 schedule_delayed_work(&mvm->tcm.work, work_delay); 1781 } 1782 spin_unlock(&mvm->tcm.lock); 1783 1784 iwl_mvm_tcm_results(mvm); 1785 } 1786 1787 void iwl_mvm_tcm_work(struct work_struct *work) 1788 { 1789 struct delayed_work *delayed_work = to_delayed_work(work); 1790 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1791 tcm.work); 1792 1793 iwl_mvm_recalc_tcm(mvm); 1794 } 1795 1796 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1797 { 1798 spin_lock_bh(&mvm->tcm.lock); 1799 mvm->tcm.paused = true; 1800 spin_unlock_bh(&mvm->tcm.lock); 1801 if (with_cancel) 1802 cancel_delayed_work_sync(&mvm->tcm.work); 1803 } 1804 1805 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1806 { 1807 int mac; 1808 1809 spin_lock_bh(&mvm->tcm.lock); 1810 mvm->tcm.ts = jiffies; 1811 mvm->tcm.ll_ts = jiffies; 1812 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1813 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1814 1815 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1816 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1817 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1818 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1819 } 1820 /* The TCM data needs to be reset before "paused" flag changes */ 1821 smp_mb(); 1822 mvm->tcm.paused = false; 1823 spin_unlock_bh(&mvm->tcm.lock); 1824 } 1825 1826 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1827 { 1828 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1829 1830 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1831 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1832 } 1833 1834 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1835 { 1836 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1837 1838 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1839 } 1840 1841 1842 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1843 { 1844 bool ps_disabled; 1845 1846 lockdep_assert_held(&mvm->mutex); 1847 1848 /* Disable power save when reading GP2 */ 1849 ps_disabled = mvm->ps_disabled; 1850 if (!ps_disabled) { 1851 mvm->ps_disabled = true; 1852 iwl_mvm_power_update_device(mvm); 1853 } 1854 1855 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); 1856 *boottime = ktime_get_boot_ns(); 1857 1858 if (!ps_disabled) { 1859 mvm->ps_disabled = ps_disabled; 1860 iwl_mvm_power_update_device(mvm); 1861 } 1862 } 1863