drivers/net/wireless/intel/iwlwifi/mvm/utils.c

   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  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
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  22  * along with this program; if not, write to the Free Software
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  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  37  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <net/mac80211.h>
  68
  69 #include "iwl-debug.h"
  70 #include "iwl-io.h"
  71 #include "iwl-prph.h"
  72 #include "iwl-csr.h"
  73 #include "mvm.h"
  74 #include "fw/api/rs.h"
  75
  76 /*
  77  * Will return 0 even if the cmd failed when RFKILL is asserted unless
  78  * CMD_WANT_SKB is set in cmd->flags.
  79  */
  80 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
  81 {
  82         int ret;
  83
  84 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
  85         if (WARN_ON(mvm->d3_test_active))
  86                 return -EIO;
  87 #endif
  88
  89         /*
  90          * Synchronous commands from this op-mode must hold
  91          * the mutex, this ensures we don't try to send two
  92          * (or more) synchronous commands at a time.
  93          */
  94         if (!(cmd->flags & CMD_ASYNC)) {
  95                 lockdep_assert_held(&mvm->mutex);
  96                 if (!(cmd->flags & CMD_SEND_IN_IDLE))
  97                         iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
  98         }
  99
 100         ret = iwl_trans_send_cmd(mvm->trans, cmd);
 101
 102         if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
 103                 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD);
 104
 105         /*
 106          * If the caller wants the SKB, then don't hide any problems, the
 107          * caller might access the response buffer which will be NULL if
 108          * the command failed.
 109          */
 110         if (cmd->flags & CMD_WANT_SKB)
 111                 return ret;
 112
 113         /* Silently ignore failures if RFKILL is asserted */
 114         if (!ret || ret == -ERFKILL)
 115                 return 0;
 116         return ret;
 117 }
 118
 119 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
 120                          u32 flags, u16 len, const void *data)
 121 {
 122         struct iwl_host_cmd cmd = {
 123                 .id = id,
 124                 .len = { len, },
 125                 .data = { data, },
 126                 .flags = flags,
 127         };
 128
 129         return iwl_mvm_send_cmd(mvm, &cmd);
 130 }
 131
 132 /*
 133  * We assume that the caller set the status to the success value
 134  */
 135 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
 136                             u32 *status)
 137 {
 138         struct iwl_rx_packet *pkt;
 139         struct iwl_cmd_response *resp;
 140         int ret, resp_len;
 141
 142         lockdep_assert_held(&mvm->mutex);
 143
 144 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
 145         if (WARN_ON(mvm->d3_test_active))
 146                 return -EIO;
 147 #endif
 148
 149         /*
 150          * Only synchronous commands can wait for status,
 151          * we use WANT_SKB so the caller can't.
 152          */
 153         if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
 154                       "cmd flags %x", cmd->flags))
 155                 return -EINVAL;
 156
 157         cmd->flags |= CMD_WANT_SKB;
 158
 159         ret = iwl_trans_send_cmd(mvm->trans, cmd);
 160         if (ret == -ERFKILL) {
 161                 /*
 162                  * The command failed because of RFKILL, don't update
 163                  * the status, leave it as success and return 0.
 164                  */
 165                 return 0;
 166         } else if (ret) {
 167                 return ret;
 168         }
 169
 170         pkt = cmd->resp_pkt;
 171
 172         resp_len = iwl_rx_packet_payload_len(pkt);
 173         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
 174                 ret = -EIO;
 175                 goto out_free_resp;
 176         }
 177
 178         resp = (void *)pkt->data;
 179         *status = le32_to_cpu(resp->status);
 180  out_free_resp:
 181         iwl_free_resp(cmd);
 182         return ret;
 183 }
 184
 185 /*
 186  * We assume that the caller set the status to the sucess value
 187  */
 188 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
 189                                 const void *data, u32 *status)
 190 {
 191         struct iwl_host_cmd cmd = {
 192                 .id = id,
 193                 .len = { len, },
 194                 .data = { data, },
 195         };
 196
 197         return iwl_mvm_send_cmd_status(mvm, &cmd, status);
 198 }
 199
 200 #define IWL_DECLARE_RATE_INFO(r) \
 201         [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
 202
 203 /*
 204  * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
 205  */
 206 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
 207         IWL_DECLARE_RATE_INFO(1),
 208         IWL_DECLARE_RATE_INFO(2),
 209         IWL_DECLARE_RATE_INFO(5),
 210         IWL_DECLARE_RATE_INFO(11),
 211         IWL_DECLARE_RATE_INFO(6),
 212         IWL_DECLARE_RATE_INFO(9),
 213         IWL_DECLARE_RATE_INFO(12),
 214         IWL_DECLARE_RATE_INFO(18),
 215         IWL_DECLARE_RATE_INFO(24),
 216         IWL_DECLARE_RATE_INFO(36),
 217         IWL_DECLARE_RATE_INFO(48),
 218         IWL_DECLARE_RATE_INFO(54),
 219 };
 220
 221 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
 222                                         enum nl80211_band band)
 223 {
 224         int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
 225         int idx;
 226         int band_offset = 0;
 227
 228         /* Legacy rate format, search for match in table */
 229         if (band == NL80211_BAND_5GHZ)
 230                 band_offset = IWL_FIRST_OFDM_RATE;
 231         for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 232                 if (fw_rate_idx_to_plcp[idx] == rate)
 233                         return idx - band_offset;
 234
 235         return -1;
 236 }
 237
 238 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
 239 {
 240         /* Get PLCP rate for tx_cmd->rate_n_flags */
 241         return fw_rate_idx_to_plcp[rate_idx];
 242 }
 243
 244 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 245 {
 246         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 247         struct iwl_error_resp *err_resp = (void *)pkt->data;
 248
 249         IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
 250                 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
 251         IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
 252                 le16_to_cpu(err_resp->bad_cmd_seq_num),
 253                 le32_to_cpu(err_resp->error_service));
 254         IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
 255                 le64_to_cpu(err_resp->timestamp));
 256 }
 257
 258 /*
 259  * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
 260  * The parameter should also be a combination of ANT_[ABC].
 261  */
 262 u8 first_antenna(u8 mask)
 263 {
 264         BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
 265         if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
 266                 return BIT(0);
 267         return BIT(ffs(mask) - 1);
 268 }
 269
 270 /*
 271  * Toggles between TX antennas to send the probe request on.
 272  * Receives the bitmask of valid TX antennas and the *index* used
 273  * for the last TX, and returns the next valid *index* to use.
 274  * In order to set it in the tx_cmd, must do BIT(idx).
 275  */
 276 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
 277 {
 278         u8 ind = last_idx;
 279         int i;
 280
 281         for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
 282                 ind = (ind + 1) % RATE_MCS_ANT_NUM;
 283                 if (valid & BIT(ind))
 284                         return ind;
 285         }
 286
 287         WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
 288         return last_idx;
 289 }
 290
 291 static const struct {
 292         const char *name;
 293         u8 num;
 294 } advanced_lookup[] = {
 295         { "NMI_INTERRUPT_WDG", 0x34 },
 296         { "SYSASSERT", 0x35 },
 297         { "UCODE_VERSION_MISMATCH", 0x37 },
 298         { "BAD_COMMAND", 0x38 },
 299         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
 300         { "FATAL_ERROR", 0x3D },
 301         { "NMI_TRM_HW_ERR", 0x46 },
 302         { "NMI_INTERRUPT_TRM", 0x4C },
 303         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
 304         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
 305         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
 306         { "NMI_INTERRUPT_HOST", 0x66 },
 307         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
 308         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
 309         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
 310         { "ADVANCED_SYSASSERT", 0 },
 311 };
 312
 313 static const char *desc_lookup(u32 num)
 314 {
 315         int i;
 316
 317         for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
 318                 if (advanced_lookup[i].num == num)
 319                         return advanced_lookup[i].name;
 320
 321         /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
 322         return advanced_lookup[i].name;
 323 }
 324
 325 /*
 326  * Note: This structure is read from the device with IO accesses,
 327  * and the reading already does the endian conversion. As it is
 328  * read with u32-sized accesses, any members with a different size
 329  * need to be ordered correctly though!
 330  */
 331 struct iwl_error_event_table_v1 {
 332         u32 valid;              /* (nonzero) valid, (0) log is empty */
 333         u32 error_id;           /* type of error */
 334         u32 pc;                 /* program counter */
 335         u32 blink1;             /* branch link */
 336         u32 blink2;             /* branch link */
 337         u32 ilink1;             /* interrupt link */
 338         u32 ilink2;             /* interrupt link */
 339         u32 data1;              /* error-specific data */
 340         u32 data2;              /* error-specific data */
 341         u32 data3;              /* error-specific data */
 342         u32 bcon_time;          /* beacon timer */
 343         u32 tsf_low;            /* network timestamp function timer */
 344         u32 tsf_hi;             /* network timestamp function timer */
 345         u32 gp1;                /* GP1 timer register */
 346         u32 gp2;                /* GP2 timer register */
 347         u32 gp3;                /* GP3 timer register */
 348         u32 ucode_ver;          /* uCode version */
 349         u32 hw_ver;             /* HW Silicon version */
 350         u32 brd_ver;            /* HW board version */
 351         u32 log_pc;             /* log program counter */
 352         u32 frame_ptr;          /* frame pointer */
 353         u32 stack_ptr;          /* stack pointer */
 354         u32 hcmd;               /* last host command header */
 355         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 356                                  * rxtx_flag */
 357         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 358                                  * host_flag */
 359         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 360                                  * enc_flag */
 361         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 362                                  * time_flag */
 363         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 364                                  * wico interrupt */
 365         u32 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 366         u32 wait_event;         /* wait event() caller address */
 367         u32 l2p_control;        /* L2pControlField */
 368         u32 l2p_duration;       /* L2pDurationField */
 369         u32 l2p_mhvalid;        /* L2pMhValidBits */
 370         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 371         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 372                                  * (LMPM_PMG_SEL) */
 373         u32 u_timestamp;        /* indicate when the date and time of the
 374                                  * compilation */
 375         u32 flow_handler;       /* FH read/write pointers, RX credit */
 376 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
 377
 378 struct iwl_error_event_table {
 379         u32 valid;              /* (nonzero) valid, (0) log is empty */
 380         u32 error_id;           /* type of error */
 381         u32 trm_hw_status0;     /* TRM HW status */
 382         u32 trm_hw_status1;     /* TRM HW status */
 383         u32 blink2;             /* branch link */
 384         u32 ilink1;             /* interrupt link */
 385         u32 ilink2;             /* interrupt link */
 386         u32 data1;              /* error-specific data */
 387         u32 data2;              /* error-specific data */
 388         u32 data3;              /* error-specific data */
 389         u32 bcon_time;          /* beacon timer */
 390         u32 tsf_low;            /* network timestamp function timer */
 391         u32 tsf_hi;             /* network timestamp function timer */
 392         u32 gp1;                /* GP1 timer register */
 393         u32 gp2;                /* GP2 timer register */
 394         u32 fw_rev_type;        /* firmware revision type */
 395         u32 major;              /* uCode version major */
 396         u32 minor;              /* uCode version minor */
 397         u32 hw_ver;             /* HW Silicon version */
 398         u32 brd_ver;            /* HW board version */
 399         u32 log_pc;             /* log program counter */
 400         u32 frame_ptr;          /* frame pointer */
 401         u32 stack_ptr;          /* stack pointer */
 402         u32 hcmd;               /* last host command header */
 403         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 404                                  * rxtx_flag */
 405         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 406                                  * host_flag */
 407         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 408                                  * enc_flag */
 409         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 410                                  * time_flag */
 411         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 412                                  * wico interrupt */
 413         u32 last_cmd_id;        /* last HCMD id handled by the firmware */
 414         u32 wait_event;         /* wait event() caller address */
 415         u32 l2p_control;        /* L2pControlField */
 416         u32 l2p_duration;       /* L2pDurationField */
 417         u32 l2p_mhvalid;        /* L2pMhValidBits */
 418         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 419         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 420                                  * (LMPM_PMG_SEL) */
 421         u32 u_timestamp;        /* indicate when the date and time of the
 422                                  * compilation */
 423         u32 flow_handler;       /* FH read/write pointers, RX credit */
 424 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
 425
 426 /*
 427  * UMAC error struct - relevant starting from family 8000 chip.
 428  * Note: This structure is read from the device with IO accesses,
 429  * and the reading already does the endian conversion. As it is
 430  * read with u32-sized accesses, any members with a different size
 431  * need to be ordered correctly though!
 432  */
 433 struct iwl_umac_error_event_table {
 434         u32 valid;              /* (nonzero) valid, (0) log is empty */
 435         u32 error_id;           /* type of error */
 436         u32 blink1;             /* branch link */
 437         u32 blink2;             /* branch link */
 438         u32 ilink1;             /* interrupt link */
 439         u32 ilink2;             /* interrupt link */
 440         u32 data1;              /* error-specific data */
 441         u32 data2;              /* error-specific data */
 442         u32 data3;              /* error-specific data */
 443         u32 umac_major;
 444         u32 umac_minor;
 445         u32 frame_pointer;      /* core register 27*/
 446         u32 stack_pointer;      /* core register 28 */
 447         u32 cmd_header;         /* latest host cmd sent to UMAC */
 448         u32 nic_isr_pref;       /* ISR status register */
 449 } __packed;
 450
 451 #define ERROR_START_OFFSET  (1 * sizeof(u32))
 452 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
 453
 454 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
 455 {
 456         struct iwl_trans *trans = mvm->trans;
 457         struct iwl_umac_error_event_table table;
 458         u32 base;
 459
 460         base = mvm->umac_error_event_table;
 461
 462         if (base < 0x800000) {
 463                 IWL_ERR(mvm,
 464                         "Not valid error log pointer 0x%08X for %s uCode\n",
 465                         base,
 466                         (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
 467                         ? "Init" : "RT");
 468                 return;
 469         }
 470
 471         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 472
 473         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 474                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 475                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 476                         mvm->status, table.valid);
 477         }
 478
 479         IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
 480                 desc_lookup(table.error_id));
 481         IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
 482         IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
 483         IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
 484         IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
 485         IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
 486         IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
 487         IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
 488         IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
 489         IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
 490         IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
 491         IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
 492         IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
 493         IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
 494 }
 495
 496 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base)
 497 {
 498         struct iwl_trans *trans = mvm->trans;
 499         struct iwl_error_event_table table;
 500         u32 val;
 501
 502         if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
 503                 if (!base)
 504                         base = mvm->fw->init_errlog_ptr;
 505         } else {
 506                 if (!base)
 507                         base = mvm->fw->inst_errlog_ptr;
 508         }
 509
 510         if (base < 0x400000) {
 511                 IWL_ERR(mvm,
 512                         "Not valid error log pointer 0x%08X for %s uCode\n",
 513                         base,
 514                         (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
 515                         ? "Init" : "RT");
 516                 return;
 517         }
 518
 519         /* check if there is a HW error */
 520         val = iwl_trans_read_mem32(trans, base);
 521         if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
 522                 int err;
 523
 524                 IWL_ERR(trans, "HW error, resetting before reading\n");
 525
 526                 /* reset the device */
 527                 iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 528                 usleep_range(5000, 6000);
 529
 530                 /* set INIT_DONE flag */
 531                 iwl_set_bit(trans, CSR_GP_CNTRL,
 532                             CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 533
 534                 /* and wait for clock stabilization */
 535                 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
 536                         udelay(2);
 537
 538                 err = iwl_poll_bit(trans, CSR_GP_CNTRL,
 539                                    CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 540                                    CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 541                                    25000);
 542                 if (err < 0) {
 543                         IWL_DEBUG_INFO(trans,
 544                                        "Failed to reset the card for the dump\n");
 545                         return;
 546                 }
 547         }
 548
 549         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 550
 551         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 552                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 553                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 554                         mvm->status, table.valid);
 555         }
 556
 557         /* Do not change this output - scripts rely on it */
 558
 559         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 560
 561         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 562                                       table.data1, table.data2, table.data3,
 563                                       table.blink2, table.ilink1,
 564                                       table.ilink2, table.bcon_time, table.gp1,
 565                                       table.gp2, table.fw_rev_type, table.major,
 566                                       table.minor, table.hw_ver, table.brd_ver);
 567         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 568                 desc_lookup(table.error_id));
 569         IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
 570         IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
 571         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 572         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 573         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 574         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 575         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 576         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 577         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 578         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 579         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 580         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 581         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 582         IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
 583         IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
 584         IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
 585         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 586         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 587         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 588         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 589         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 590         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 591         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 592         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 593         IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
 594         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 595         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 596         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 597         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 598         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 599         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 600         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 601         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 602 }
 603
 604 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
 605 {
 606         if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
 607                 IWL_ERR(mvm,
 608                         "DEVICE_ENABLED bit is not set. Aborting dump.\n");
 609                 return;
 610         }
 611
 612         iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]);
 613
 614         if (mvm->error_event_table[1])
 615                 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]);
 616
 617         if (mvm->support_umac_log)
 618                 iwl_mvm_dump_umac_error_log(mvm);
 619 }
 620
 621 int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq)
 622 {
 623         int i;
 624
 625         lockdep_assert_held(&mvm->queue_info_lock);
 626
 627         /* This should not be hit with new TX path */
 628         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 629                 return -ENOSPC;
 630
 631         /* Start by looking for a free queue */
 632         for (i = minq; i <= maxq; i++)
 633                 if (mvm->queue_info[i].hw_queue_refcount == 0 &&
 634                     mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
 635                         return i;
 636
 637         /*
 638          * If no free queue found - settle for an inactive one to reconfigure
 639          * Make sure that the inactive queue either already belongs to this STA,
 640          * or that if it belongs to another one - it isn't the reserved queue
 641          */
 642         for (i = minq; i <= maxq; i++)
 643                 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE &&
 644                     (sta_id == mvm->queue_info[i].ra_sta_id ||
 645                      !mvm->queue_info[i].reserved))
 646                         return i;
 647
 648         return -ENOSPC;
 649 }
 650
 651 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
 652                          int tid, int frame_limit, u16 ssn)
 653 {
 654         struct iwl_scd_txq_cfg_cmd cmd = {
 655                 .scd_queue = queue,
 656                 .action = SCD_CFG_ENABLE_QUEUE,
 657                 .window = frame_limit,
 658                 .sta_id = sta_id,
 659                 .ssn = cpu_to_le16(ssn),
 660                 .tx_fifo = fifo,
 661                 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
 662                               queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
 663                 .tid = tid,
 664         };
 665         int ret;
 666
 667         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 668                 return -EINVAL;
 669
 670         spin_lock_bh(&mvm->queue_info_lock);
 671         if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0,
 672                  "Trying to reconfig unallocated queue %d\n", queue)) {
 673                 spin_unlock_bh(&mvm->queue_info_lock);
 674                 return -ENXIO;
 675         }
 676         spin_unlock_bh(&mvm->queue_info_lock);
 677
 678         IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
 679
 680         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 681         WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
 682                   queue, fifo, ret);
 683
 684         return ret;
 685 }
 686
 687 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue,
 688                                        int mac80211_queue, u8 sta_id, u8 tid)
 689 {
 690         bool enable_queue = true;
 691
 692         spin_lock_bh(&mvm->queue_info_lock);
 693
 694         /* Make sure this TID isn't already enabled */
 695         if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
 696                 spin_unlock_bh(&mvm->queue_info_lock);
 697                 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
 698                         queue, tid);
 699                 return false;
 700         }
 701
 702         /* Update mappings and refcounts */
 703         if (mvm->queue_info[queue].hw_queue_refcount > 0)
 704                 enable_queue = false;
 705
 706         if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) {
 707                 WARN(mac80211_queue >=
 708                      BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]),
 709                      "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n",
 710                      mac80211_queue, queue, sta_id, tid);
 711                 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue);
 712         }
 713
 714         mvm->queue_info[queue].hw_queue_refcount++;
 715         mvm->queue_info[queue].tid_bitmap |= BIT(tid);
 716         mvm->queue_info[queue].ra_sta_id = sta_id;
 717
 718         if (enable_queue) {
 719                 if (tid != IWL_MAX_TID_COUNT)
 720                         mvm->queue_info[queue].mac80211_ac =
 721                                 tid_to_mac80211_ac[tid];
 722                 else
 723                         mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
 724
 725                 mvm->queue_info[queue].txq_tid = tid;
 726         }
 727
 728         IWL_DEBUG_TX_QUEUES(mvm,
 729                             "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
 730                             queue, mvm->queue_info[queue].hw_queue_refcount,
 731                             mvm->hw_queue_to_mac80211[queue]);
 732
 733         spin_unlock_bh(&mvm->queue_info_lock);
 734
 735         return enable_queue;
 736 }
 737
 738 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue,
 739                             u8 sta_id, u8 tid, unsigned int timeout)
 740 {
 741         struct iwl_tx_queue_cfg_cmd cmd = {
 742                 .flags = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE),
 743                 .sta_id = sta_id,
 744                 .tid = tid,
 745         };
 746         int queue;
 747
 748         if (cmd.tid == IWL_MAX_TID_COUNT)
 749                 cmd.tid = IWL_MGMT_TID;
 750         queue = iwl_trans_txq_alloc(mvm->trans, (void *)&cmd,
 751                                     SCD_QUEUE_CFG, timeout);
 752
 753         if (queue < 0) {
 754                 IWL_DEBUG_TX_QUEUES(mvm,
 755                                     "Failed allocating TXQ for sta %d tid %d, ret: %d\n",
 756                                     sta_id, tid, queue);
 757                 return queue;
 758         }
 759
 760         IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n",
 761                             queue, sta_id, tid);
 762
 763         mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue);
 764         IWL_DEBUG_TX_QUEUES(mvm,
 765                             "Enabling TXQ #%d (mac80211 map:0x%x)\n",
 766                             queue, mvm->hw_queue_to_mac80211[queue]);
 767
 768         return queue;
 769 }
 770
 771 bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
 772                         u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
 773                         unsigned int wdg_timeout)
 774 {
 775         struct iwl_scd_txq_cfg_cmd cmd = {
 776                 .scd_queue = queue,
 777                 .action = SCD_CFG_ENABLE_QUEUE,
 778                 .window = cfg->frame_limit,
 779                 .sta_id = cfg->sta_id,
 780                 .ssn = cpu_to_le16(ssn),
 781                 .tx_fifo = cfg->fifo,
 782                 .aggregate = cfg->aggregate,
 783                 .tid = cfg->tid,
 784         };
 785         bool inc_ssn;
 786
 787         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 788                 return false;
 789
 790         /* Send the enabling command if we need to */
 791         if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue,
 792                                         cfg->sta_id, cfg->tid))
 793                 return false;
 794
 795         inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
 796                                            NULL, wdg_timeout);
 797         if (inc_ssn)
 798                 le16_add_cpu(&cmd.ssn, 1);
 799
 800         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
 801              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
 802
 803         return inc_ssn;
 804 }
 805
 806 int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
 807                         u8 tid, u8 flags)
 808 {
 809         struct iwl_scd_txq_cfg_cmd cmd = {
 810                 .scd_queue = queue,
 811                 .action = SCD_CFG_DISABLE_QUEUE,
 812         };
 813         bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE;
 814         int ret;
 815
 816         if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES))
 817                 return -EINVAL;
 818
 819         if (iwl_mvm_has_new_tx_api(mvm)) {
 820                 spin_lock_bh(&mvm->queue_info_lock);
 821
 822                 if (remove_mac_queue)
 823                         mvm->hw_queue_to_mac80211[queue] &=
 824                                 ~BIT(mac80211_queue);
 825
 826                 spin_unlock_bh(&mvm->queue_info_lock);
 827
 828                 iwl_trans_txq_free(mvm->trans, queue);
 829
 830                 return 0;
 831         }
 832
 833         spin_lock_bh(&mvm->queue_info_lock);
 834
 835         if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
 836                 spin_unlock_bh(&mvm->queue_info_lock);
 837                 return 0;
 838         }
 839
 840         mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
 841
 842         /*
 843          * If there is another TID with the same AC - don't remove the MAC queue
 844          * from the mapping
 845          */
 846         if (tid < IWL_MAX_TID_COUNT) {
 847                 unsigned long tid_bitmap =
 848                         mvm->queue_info[queue].tid_bitmap;
 849                 int ac = tid_to_mac80211_ac[tid];
 850                 int i;
 851
 852                 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
 853                         if (tid_to_mac80211_ac[i] == ac)
 854                                 remove_mac_queue = false;
 855                 }
 856         }
 857
 858         if (remove_mac_queue)
 859                 mvm->hw_queue_to_mac80211[queue] &=
 860                         ~BIT(mac80211_queue);
 861         mvm->queue_info[queue].hw_queue_refcount--;
 862
 863         cmd.action = mvm->queue_info[queue].hw_queue_refcount ?
 864                 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
 865         if (cmd.action == SCD_CFG_DISABLE_QUEUE)
 866                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
 867
 868         IWL_DEBUG_TX_QUEUES(mvm,
 869                             "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
 870                             queue,
 871                             mvm->queue_info[queue].hw_queue_refcount,
 872                             mvm->hw_queue_to_mac80211[queue]);
 873
 874         /* If the queue is still enabled - nothing left to do in this func */
 875         if (cmd.action == SCD_CFG_ENABLE_QUEUE) {
 876                 spin_unlock_bh(&mvm->queue_info_lock);
 877                 return 0;
 878         }
 879
 880         cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
 881         cmd.tid = mvm->queue_info[queue].txq_tid;
 882
 883         /* Make sure queue info is correct even though we overwrite it */
 884         WARN(mvm->queue_info[queue].hw_queue_refcount ||
 885              mvm->queue_info[queue].tid_bitmap ||
 886              mvm->hw_queue_to_mac80211[queue],
 887              "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
 888              queue, mvm->queue_info[queue].hw_queue_refcount,
 889              mvm->hw_queue_to_mac80211[queue],
 890              mvm->queue_info[queue].tid_bitmap);
 891
 892         /* If we are here - the queue is freed and we can zero out these vals */
 893         mvm->queue_info[queue].hw_queue_refcount = 0;
 894         mvm->queue_info[queue].tid_bitmap = 0;
 895         mvm->hw_queue_to_mac80211[queue] = 0;
 896
 897         /* Regardless if this is a reserved TXQ for a STA - mark it as false */
 898         mvm->queue_info[queue].reserved = false;
 899
 900         spin_unlock_bh(&mvm->queue_info_lock);
 901
 902         iwl_trans_txq_disable(mvm->trans, queue, false);
 903         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
 904                                    sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
 905
 906         if (ret)
 907                 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
 908                         queue, ret);
 909         return ret;
 910 }
 911
 912 /**
 913  * iwl_mvm_send_lq_cmd() - Send link quality command
 914  * @init: This command is sent as part of station initialization right
 915  *        after station has been added.
 916  *
 917  * The link quality command is sent as the last step of station creation.
 918  * This is the special case in which init is set and we call a callback in
 919  * this case to clear the state indicating that station creation is in
 920  * progress.
 921  */
 922 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
 923 {
 924         struct iwl_host_cmd cmd = {
 925                 .id = LQ_CMD,
 926                 .len = { sizeof(struct iwl_lq_cmd), },
 927                 .flags = init ? 0 : CMD_ASYNC,
 928                 .data = { lq, },
 929         };
 930
 931         if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA))
 932                 return -EINVAL;
 933
 934         return iwl_mvm_send_cmd(mvm, &cmd);
 935 }
 936
 937 /**
 938  * iwl_mvm_update_smps - Get a request to change the SMPS mode
 939  * @req_type: The part of the driver who call for a change.
 940  * @smps_requests: The request to change the SMPS mode.
 941  *
 942  * Get a requst to change the SMPS mode,
 943  * and change it according to all other requests in the driver.
 944  */
 945 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 946                          enum iwl_mvm_smps_type_request req_type,
 947                          enum ieee80211_smps_mode smps_request)
 948 {
 949         struct iwl_mvm_vif *mvmvif;
 950         enum ieee80211_smps_mode smps_mode;
 951         int i;
 952
 953         lockdep_assert_held(&mvm->mutex);
 954
 955         /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
 956         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 957                 return;
 958
 959         if (vif->type == NL80211_IFTYPE_AP)
 960                 smps_mode = IEEE80211_SMPS_OFF;
 961         else
 962                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 963
 964         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 965         mvmvif->smps_requests[req_type] = smps_request;
 966         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 967                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
 968                         smps_mode = IEEE80211_SMPS_STATIC;
 969                         break;
 970                 }
 971                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 972                         smps_mode = IEEE80211_SMPS_DYNAMIC;
 973         }
 974
 975         ieee80211_request_smps(vif, smps_mode);
 976 }
 977
 978 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 979 {
 980         struct iwl_statistics_cmd scmd = {
 981                 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
 982         };
 983         struct iwl_host_cmd cmd = {
 984                 .id = STATISTICS_CMD,
 985                 .len[0] = sizeof(scmd),
 986                 .data[0] = &scmd,
 987                 .flags = CMD_WANT_SKB,
 988         };
 989         int ret;
 990
 991         ret = iwl_mvm_send_cmd(mvm, &cmd);
 992         if (ret)
 993                 return ret;
 994
 995         iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
 996         iwl_free_resp(&cmd);
 997
 998         if (clear)
 999                 iwl_mvm_accu_radio_stats(mvm);
1000
1001         return 0;
1002 }
1003
1004 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
1005 {
1006         mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
1007         mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
1008         mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
1009         mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
1010 }
1011
1012 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
1013                                    struct ieee80211_vif *vif)
1014 {
1015         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1016         bool *result = _data;
1017         int i;
1018
1019         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
1020                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
1021                     mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
1022                         *result = false;
1023         }
1024 }
1025
1026 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
1027 {
1028         bool result = true;
1029
1030         lockdep_assert_held(&mvm->mutex);
1031
1032         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
1033                 return false;
1034
1035         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
1036                 return false;
1037
1038         if (mvm->cfg->rx_with_siso_diversity)
1039                 return false;
1040
1041         ieee80211_iterate_active_interfaces_atomic(
1042                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1043                         iwl_mvm_diversity_iter, &result);
1044
1045         return result;
1046 }
1047
1048 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1049                                bool prev)
1050 {
1051         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1052         int res;
1053
1054         lockdep_assert_held(&mvm->mutex);
1055
1056         if (iwl_mvm_vif_low_latency(mvmvif) == prev)
1057                 return 0;
1058
1059         res = iwl_mvm_update_quotas(mvm, false, NULL);
1060         if (res)
1061                 return res;
1062
1063         iwl_mvm_bt_coex_vif_change(mvm);
1064
1065         return iwl_mvm_power_update_mac(mvm);
1066 }
1067
1068 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1069 {
1070         bool *result = _data;
1071
1072         if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
1073                 *result = true;
1074 }
1075
1076 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
1077 {
1078         bool result = false;
1079
1080         ieee80211_iterate_active_interfaces_atomic(
1081                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1082                         iwl_mvm_ll_iter, &result);
1083
1084         return result;
1085 }
1086
1087 struct iwl_bss_iter_data {
1088         struct ieee80211_vif *vif;
1089         bool error;
1090 };
1091
1092 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
1093                                        struct ieee80211_vif *vif)
1094 {
1095         struct iwl_bss_iter_data *data = _data;
1096
1097         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1098                 return;
1099
1100         if (data->vif) {
1101                 data->error = true;
1102                 return;
1103         }
1104
1105         data->vif = vif;
1106 }
1107
1108 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
1109 {
1110         struct iwl_bss_iter_data bss_iter_data = {};
1111
1112         ieee80211_iterate_active_interfaces_atomic(
1113                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1114                 iwl_mvm_bss_iface_iterator, &bss_iter_data);
1115
1116         if (bss_iter_data.error) {
1117                 IWL_ERR(mvm, "More than one managed interface active!\n");
1118                 return ERR_PTR(-EINVAL);
1119         }
1120
1121         return bss_iter_data.vif;
1122 }
1123
1124 struct iwl_sta_iter_data {
1125         bool assoc;
1126 };
1127
1128 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
1129                                        struct ieee80211_vif *vif)
1130 {
1131         struct iwl_sta_iter_data *data = _data;
1132
1133         if (vif->type != NL80211_IFTYPE_STATION)
1134                 return;
1135
1136         if (vif->bss_conf.assoc)
1137                 data->assoc = true;
1138 }
1139
1140 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
1141 {
1142         struct iwl_sta_iter_data data = {
1143                 .assoc = false,
1144         };
1145
1146         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1147                                                    IEEE80211_IFACE_ITER_NORMAL,
1148                                                    iwl_mvm_sta_iface_iterator,
1149                                                    &data);
1150         return data.assoc;
1151 }
1152
1153 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
1154                                     struct ieee80211_vif *vif,
1155                                     bool tdls, bool cmd_q)
1156 {
1157         struct iwl_fw_dbg_trigger_tlv *trigger;
1158         struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
1159         unsigned int default_timeout =
1160                 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
1161
1162         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
1163                 /*
1164                  * We can't know when the station is asleep or awake, so we
1165                  * must disable the queue hang detection.
1166                  */
1167                 if (fw_has_capa(&mvm->fw->ucode_capa,
1168                                 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
1169                     vif && vif->type == NL80211_IFTYPE_AP)
1170                         return IWL_WATCHDOG_DISABLED;
1171                 return iwlmvm_mod_params.tfd_q_hang_detect ?
1172                         default_timeout : IWL_WATCHDOG_DISABLED;
1173         }
1174
1175         trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
1176         txq_timer = (void *)trigger->data;
1177
1178         if (tdls)
1179                 return le32_to_cpu(txq_timer->tdls);
1180
1181         if (cmd_q)
1182                 return le32_to_cpu(txq_timer->command_queue);
1183
1184         if (WARN_ON(!vif))
1185                 return default_timeout;
1186
1187         switch (ieee80211_vif_type_p2p(vif)) {
1188         case NL80211_IFTYPE_ADHOC:
1189                 return le32_to_cpu(txq_timer->ibss);
1190         case NL80211_IFTYPE_STATION:
1191                 return le32_to_cpu(txq_timer->bss);
1192         case NL80211_IFTYPE_AP:
1193                 return le32_to_cpu(txq_timer->softap);
1194         case NL80211_IFTYPE_P2P_CLIENT:
1195                 return le32_to_cpu(txq_timer->p2p_client);
1196         case NL80211_IFTYPE_P2P_GO:
1197                 return le32_to_cpu(txq_timer->p2p_go);
1198         case NL80211_IFTYPE_P2P_DEVICE:
1199                 return le32_to_cpu(txq_timer->p2p_device);
1200         case NL80211_IFTYPE_MONITOR:
1201                 return default_timeout;
1202         default:
1203                 WARN_ON(1);
1204                 return mvm->cfg->base_params->wd_timeout;
1205         }
1206 }
1207
1208 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1209                              const char *errmsg)
1210 {
1211         struct iwl_fw_dbg_trigger_tlv *trig;
1212         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
1213
1214         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
1215                 goto out;
1216
1217         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
1218         trig_mlme = (void *)trig->data;
1219         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
1220                                            ieee80211_vif_to_wdev(vif), trig))
1221                 goto out;
1222
1223         if (trig_mlme->stop_connection_loss &&
1224             --trig_mlme->stop_connection_loss)
1225                 goto out;
1226
1227         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
1228
1229 out:
1230         ieee80211_connection_loss(vif);
1231 }
1232
1233 /*
1234  * Remove inactive TIDs of a given queue.
1235  * If all queue TIDs are inactive - mark the queue as inactive
1236  * If only some the queue TIDs are inactive - unmap them from the queue
1237  */
1238 static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1239                                          struct iwl_mvm_sta *mvmsta, int queue,
1240                                          unsigned long tid_bitmap)
1241 {
1242         int tid;
1243
1244         lockdep_assert_held(&mvmsta->lock);
1245         lockdep_assert_held(&mvm->queue_info_lock);
1246
1247         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1248                 return;
1249
1250         /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1251         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1252                 /* If some TFDs are still queued - don't mark TID as inactive */
1253                 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1254                         tid_bitmap &= ~BIT(tid);
1255
1256                 /* Don't mark as inactive any TID that has an active BA */
1257                 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1258                         tid_bitmap &= ~BIT(tid);
1259         }
1260
1261         /* If all TIDs in the queue are inactive - mark queue as inactive. */
1262         if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1263                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
1264
1265                 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1)
1266                         mvmsta->tid_data[tid].is_tid_active = false;
1267
1268                 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n",
1269                                     queue);
1270                 return;
1271         }
1272
1273         /*
1274          * If we are here, this is a shared queue and not all TIDs timed-out.
1275          * Remove the ones that did.
1276          */
1277         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1278                 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]];
1279
1280                 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1281                 mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue);
1282                 mvm->queue_info[queue].hw_queue_refcount--;
1283                 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1284                 mvmsta->tid_data[tid].is_tid_active = false;
1285
1286                 IWL_DEBUG_TX_QUEUES(mvm,
1287                                     "Removing inactive TID %d from shared Q:%d\n",
1288                                     tid, queue);
1289         }
1290
1291         IWL_DEBUG_TX_QUEUES(mvm,
1292                             "TXQ #%d left with tid bitmap 0x%x\n", queue,
1293                             mvm->queue_info[queue].tid_bitmap);
1294
1295         /*
1296          * There may be different TIDs with the same mac queues, so make
1297          * sure all TIDs have existing corresponding mac queues enabled
1298          */
1299         tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1300         for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1301                 mvm->hw_queue_to_mac80211[queue] |=
1302                         BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]);
1303         }
1304
1305         /* If the queue is marked as shared - "unshare" it */
1306         if (mvm->queue_info[queue].hw_queue_refcount == 1 &&
1307             mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1308                 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING;
1309                 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1310                                     queue);
1311         }
1312 }
1313
1314 void iwl_mvm_inactivity_check(struct iwl_mvm *mvm)
1315 {
1316         unsigned long timeout_queues_map = 0;
1317         unsigned long now = jiffies;
1318         int i;
1319
1320         if (iwl_mvm_has_new_tx_api(mvm))
1321                 return;
1322
1323         spin_lock_bh(&mvm->queue_info_lock);
1324         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1325                 if (mvm->queue_info[i].hw_queue_refcount > 0)
1326                         timeout_queues_map |= BIT(i);
1327         spin_unlock_bh(&mvm->queue_info_lock);
1328
1329         rcu_read_lock();
1330
1331         /*
1332          * If a queue time outs - mark it as INACTIVE (don't remove right away
1333          * if we don't have to.) This is an optimization in case traffic comes
1334          * later, and we don't HAVE to use a currently-inactive queue
1335          */
1336         for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) {
1337                 struct ieee80211_sta *sta;
1338                 struct iwl_mvm_sta *mvmsta;
1339                 u8 sta_id;
1340                 int tid;
1341                 unsigned long inactive_tid_bitmap = 0;
1342                 unsigned long queue_tid_bitmap;
1343
1344                 spin_lock_bh(&mvm->queue_info_lock);
1345                 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1346
1347                 /* If TXQ isn't in active use anyway - nothing to do here... */
1348                 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1349                     mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) {
1350                         spin_unlock_bh(&mvm->queue_info_lock);
1351                         continue;
1352                 }
1353
1354                 /* Check to see if there are inactive TIDs on this queue */
1355                 for_each_set_bit(tid, &queue_tid_bitmap,
1356                                  IWL_MAX_TID_COUNT + 1) {
1357                         if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1358                                        IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1359                                 continue;
1360
1361                         inactive_tid_bitmap |= BIT(tid);
1362                 }
1363                 spin_unlock_bh(&mvm->queue_info_lock);
1364
1365                 /* If all TIDs are active - finish check on this queue */
1366                 if (!inactive_tid_bitmap)
1367                         continue;
1368
1369                 /*
1370                  * If we are here - the queue hadn't been served recently and is
1371                  * in use
1372                  */
1373
1374                 sta_id = mvm->queue_info[i].ra_sta_id;
1375                 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1376
1377                 /*
1378                  * If the STA doesn't exist anymore, it isn't an error. It could
1379                  * be that it was removed since getting the queues, and in this
1380                  * case it should've inactivated its queues anyway.
1381                  */
1382                 if (IS_ERR_OR_NULL(sta))
1383                         continue;
1384
1385                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1386
1387                 spin_lock_bh(&mvmsta->lock);
1388                 spin_lock(&mvm->queue_info_lock);
1389                 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1390                                              inactive_tid_bitmap);
1391                 spin_unlock(&mvm->queue_info_lock);
1392                 spin_unlock_bh(&mvmsta->lock);
1393         }
1394
1395         rcu_read_unlock();
1396 }
1397
1398 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1399 {
1400         bool ps_disabled;
1401
1402         lockdep_assert_held(&mvm->mutex);
1403
1404         /* Disable power save when reading GP2 */
1405         ps_disabled = mvm->ps_disabled;
1406         if (!ps_disabled) {
1407                 mvm->ps_disabled = true;
1408                 iwl_mvm_power_update_device(mvm);
1409         }
1410
1411         *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
1412         *boottime = ktime_get_boot_ns();
1413
1414         if (!ps_disabled) {
1415                 mvm->ps_disabled = ps_disabled;
1416                 iwl_mvm_power_update_device(mvm);
1417         }
1418 }
1419
1420 int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif,
1421                          enum iwl_lqm_cmd_operatrions operation,
1422                          u32 duration, u32 timeout)
1423 {
1424         struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1425         struct iwl_link_qual_msrmnt_cmd cmd = {
1426                 .cmd_operation = cpu_to_le32(operation),
1427                 .mac_id = cpu_to_le32(mvm_vif->id),
1428                 .measurement_time = cpu_to_le32(duration),
1429                 .timeout = cpu_to_le32(timeout),
1430         };
1431         u32 cmdid =
1432                 iwl_cmd_id(LINK_QUALITY_MEASUREMENT_CMD, MAC_CONF_GROUP, 0);
1433         int ret;
1434
1435         if (!fw_has_capa(&mvm_vif->mvm->fw->ucode_capa,
1436                          IWL_UCODE_TLV_CAPA_LQM_SUPPORT))
1437                 return -EOPNOTSUPP;
1438
1439         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1440                 return -EINVAL;
1441
1442         switch (operation) {
1443         case LQM_CMD_OPERATION_START_MEASUREMENT:
1444                 if (iwl_mvm_lqm_active(mvm_vif->mvm))
1445                         return -EBUSY;
1446                 if (!vif->bss_conf.assoc)
1447                         return -EINVAL;
1448                 mvm_vif->lqm_active = true;
1449                 break;
1450         case LQM_CMD_OPERATION_STOP_MEASUREMENT:
1451                 if (!iwl_mvm_lqm_active(mvm_vif->mvm))
1452                         return -EINVAL;
1453                 break;
1454         default:
1455                 return -EINVAL;
1456         }
1457
1458         ret = iwl_mvm_send_cmd_pdu(mvm_vif->mvm, cmdid, 0, sizeof(cmd),
1459                                    &cmd);
1460
1461         /* command failed - roll back lqm_active state */
1462         if (ret) {
1463                 mvm_vif->lqm_active =
1464                         operation == LQM_CMD_OPERATION_STOP_MEASUREMENT;
1465         }
1466
1467         return ret;
1468 }
1469
1470 static void iwl_mvm_lqm_active_iterator(void *_data, u8 *mac,
1471                                         struct ieee80211_vif *vif)
1472 {
1473         struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1474         bool *lqm_active = _data;
1475
1476         *lqm_active = *lqm_active || mvm_vif->lqm_active;
1477 }
1478
1479 bool iwl_mvm_lqm_active(struct iwl_mvm *mvm)
1480 {
1481         bool ret = false;
1482
1483         lockdep_assert_held(&mvm->mutex);
1484         ieee80211_iterate_active_interfaces_atomic(
1485                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1486                 iwl_mvm_lqm_active_iterator, &ret);
1487
1488         return ret;
1489 }