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  * 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.
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  23  * in the file called COPYING.
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  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  33  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 Intel Corporation
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  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
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  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64 #include <net/mac80211.h>
  65
  66 #include "iwl-debug.h"
  67 #include "iwl-io.h"
  68 #include "iwl-prph.h"
  69 #include "iwl-csr.h"
  70 #include "mvm.h"
  71 #include "fw/api/rs.h"
  72
  73 /*
  74  * Will return 0 even if the cmd failed when RFKILL is asserted unless
  75  * CMD_WANT_SKB is set in cmd->flags.
  76  */
  77 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
  78 {
  79         int ret;
  80
  81 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
  82         if (WARN_ON(mvm->d3_test_active))
  83                 return -EIO;
  84 #endif
  85
  86         /*
  87          * Synchronous commands from this op-mode must hold
  88          * the mutex, this ensures we don't try to send two
  89          * (or more) synchronous commands at a time.
  90          */
  91         if (!(cmd->flags & CMD_ASYNC)) {
  92                 lockdep_assert_held(&mvm->mutex);
  93                 if (!(cmd->flags & CMD_SEND_IN_IDLE))
  94                         iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
  95         }
  96
  97         ret = iwl_trans_send_cmd(mvm->trans, cmd);
  98
  99         if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
 100                 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD);
 101
 102         /*
 103          * If the caller wants the SKB, then don't hide any problems, the
 104          * caller might access the response buffer which will be NULL if
 105          * the command failed.
 106          */
 107         if (cmd->flags & CMD_WANT_SKB)
 108                 return ret;
 109
 110         /* Silently ignore failures if RFKILL is asserted */
 111         if (!ret || ret == -ERFKILL)
 112                 return 0;
 113         return ret;
 114 }
 115
 116 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
 117                          u32 flags, u16 len, const void *data)
 118 {
 119         struct iwl_host_cmd cmd = {
 120                 .id = id,
 121                 .len = { len, },
 122                 .data = { data, },
 123                 .flags = flags,
 124         };
 125
 126         return iwl_mvm_send_cmd(mvm, &cmd);
 127 }
 128
 129 /*
 130  * We assume that the caller set the status to the success value
 131  */
 132 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
 133                             u32 *status)
 134 {
 135         struct iwl_rx_packet *pkt;
 136         struct iwl_cmd_response *resp;
 137         int ret, resp_len;
 138
 139         lockdep_assert_held(&mvm->mutex);
 140
 141 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
 142         if (WARN_ON(mvm->d3_test_active))
 143                 return -EIO;
 144 #endif
 145
 146         /*
 147          * Only synchronous commands can wait for status,
 148          * we use WANT_SKB so the caller can't.
 149          */
 150         if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
 151                       "cmd flags %x", cmd->flags))
 152                 return -EINVAL;
 153
 154         cmd->flags |= CMD_WANT_SKB;
 155
 156         ret = iwl_trans_send_cmd(mvm->trans, cmd);
 157         if (ret == -ERFKILL) {
 158                 /*
 159                  * The command failed because of RFKILL, don't update
 160                  * the status, leave it as success and return 0.
 161                  */
 162                 return 0;
 163         } else if (ret) {
 164                 return ret;
 165         }
 166
 167         pkt = cmd->resp_pkt;
 168
 169         resp_len = iwl_rx_packet_payload_len(pkt);
 170         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
 171                 ret = -EIO;
 172                 goto out_free_resp;
 173         }
 174
 175         resp = (void *)pkt->data;
 176         *status = le32_to_cpu(resp->status);
 177  out_free_resp:
 178         iwl_free_resp(cmd);
 179         return ret;
 180 }
 181
 182 /*
 183  * We assume that the caller set the status to the sucess value
 184  */
 185 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
 186                                 const void *data, u32 *status)
 187 {
 188         struct iwl_host_cmd cmd = {
 189                 .id = id,
 190                 .len = { len, },
 191                 .data = { data, },
 192         };
 193
 194         return iwl_mvm_send_cmd_status(mvm, &cmd, status);
 195 }
 196
 197 #define IWL_DECLARE_RATE_INFO(r) \
 198         [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
 199
 200 /*
 201  * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
 202  */
 203 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
 204         IWL_DECLARE_RATE_INFO(1),
 205         IWL_DECLARE_RATE_INFO(2),
 206         IWL_DECLARE_RATE_INFO(5),
 207         IWL_DECLARE_RATE_INFO(11),
 208         IWL_DECLARE_RATE_INFO(6),
 209         IWL_DECLARE_RATE_INFO(9),
 210         IWL_DECLARE_RATE_INFO(12),
 211         IWL_DECLARE_RATE_INFO(18),
 212         IWL_DECLARE_RATE_INFO(24),
 213         IWL_DECLARE_RATE_INFO(36),
 214         IWL_DECLARE_RATE_INFO(48),
 215         IWL_DECLARE_RATE_INFO(54),
 216 };
 217
 218 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
 219                                         enum nl80211_band band)
 220 {
 221         int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
 222         int idx;
 223         int band_offset = 0;
 224
 225         /* Legacy rate format, search for match in table */
 226         if (band == NL80211_BAND_5GHZ)
 227                 band_offset = IWL_FIRST_OFDM_RATE;
 228         for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 229                 if (fw_rate_idx_to_plcp[idx] == rate)
 230                         return idx - band_offset;
 231
 232         return -1;
 233 }
 234
 235 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
 236 {
 237         /* Get PLCP rate for tx_cmd->rate_n_flags */
 238         return fw_rate_idx_to_plcp[rate_idx];
 239 }
 240
 241 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 242 {
 243         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 244         struct iwl_error_resp *err_resp = (void *)pkt->data;
 245
 246         IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
 247                 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
 248         IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
 249                 le16_to_cpu(err_resp->bad_cmd_seq_num),
 250                 le32_to_cpu(err_resp->error_service));
 251         IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
 252                 le64_to_cpu(err_resp->timestamp));
 253 }
 254
 255 /*
 256  * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
 257  * The parameter should also be a combination of ANT_[ABC].
 258  */
 259 u8 first_antenna(u8 mask)
 260 {
 261         BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
 262         if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
 263                 return BIT(0);
 264         return BIT(ffs(mask) - 1);
 265 }
 266
 267 /*
 268  * Toggles between TX antennas to send the probe request on.
 269  * Receives the bitmask of valid TX antennas and the *index* used
 270  * for the last TX, and returns the next valid *index* to use.
 271  * In order to set it in the tx_cmd, must do BIT(idx).
 272  */
 273 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
 274 {
 275         u8 ind = last_idx;
 276         int i;
 277
 278         for (i = 0; i < MAX_ANT_NUM; i++) {
 279                 ind = (ind + 1) % MAX_ANT_NUM;
 280                 if (valid & BIT(ind))
 281                         return ind;
 282         }
 283
 284         WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
 285         return last_idx;
 286 }
 287
 288 static const struct {
 289         const char *name;
 290         u8 num;
 291 } advanced_lookup[] = {
 292         { "NMI_INTERRUPT_WDG", 0x34 },
 293         { "SYSASSERT", 0x35 },
 294         { "UCODE_VERSION_MISMATCH", 0x37 },
 295         { "BAD_COMMAND", 0x38 },
 296         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
 297         { "FATAL_ERROR", 0x3D },
 298         { "NMI_TRM_HW_ERR", 0x46 },
 299         { "NMI_INTERRUPT_TRM", 0x4C },
 300         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
 301         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
 302         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
 303         { "NMI_INTERRUPT_HOST", 0x66 },
 304         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
 305         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
 306         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
 307         { "ADVANCED_SYSASSERT", 0 },
 308 };
 309
 310 static const char *desc_lookup(u32 num)
 311 {
 312         int i;
 313
 314         for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
 315                 if (advanced_lookup[i].num == num)
 316                         return advanced_lookup[i].name;
 317
 318         /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
 319         return advanced_lookup[i].name;
 320 }
 321
 322 /*
 323  * Note: This structure is read from the device with IO accesses,
 324  * and the reading already does the endian conversion. As it is
 325  * read with u32-sized accesses, any members with a different size
 326  * need to be ordered correctly though!
 327  */
 328 struct iwl_error_event_table_v1 {
 329         u32 valid;              /* (nonzero) valid, (0) log is empty */
 330         u32 error_id;           /* type of error */
 331         u32 pc;                 /* program counter */
 332         u32 blink1;             /* branch link */
 333         u32 blink2;             /* branch link */
 334         u32 ilink1;             /* interrupt link */
 335         u32 ilink2;             /* interrupt link */
 336         u32 data1;              /* error-specific data */
 337         u32 data2;              /* error-specific data */
 338         u32 data3;              /* error-specific data */
 339         u32 bcon_time;          /* beacon timer */
 340         u32 tsf_low;            /* network timestamp function timer */
 341         u32 tsf_hi;             /* network timestamp function timer */
 342         u32 gp1;                /* GP1 timer register */
 343         u32 gp2;                /* GP2 timer register */
 344         u32 gp3;                /* GP3 timer register */
 345         u32 ucode_ver;          /* uCode version */
 346         u32 hw_ver;             /* HW Silicon version */
 347         u32 brd_ver;            /* HW board version */
 348         u32 log_pc;             /* log program counter */
 349         u32 frame_ptr;          /* frame pointer */
 350         u32 stack_ptr;          /* stack pointer */
 351         u32 hcmd;               /* last host command header */
 352         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 353                                  * rxtx_flag */
 354         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 355                                  * host_flag */
 356         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 357                                  * enc_flag */
 358         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 359                                  * time_flag */
 360         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 361                                  * wico interrupt */
 362         u32 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 363         u32 wait_event;         /* wait event() caller address */
 364         u32 l2p_control;        /* L2pControlField */
 365         u32 l2p_duration;       /* L2pDurationField */
 366         u32 l2p_mhvalid;        /* L2pMhValidBits */
 367         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 368         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 369                                  * (LMPM_PMG_SEL) */
 370         u32 u_timestamp;        /* indicate when the date and time of the
 371                                  * compilation */
 372         u32 flow_handler;       /* FH read/write pointers, RX credit */
 373 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
 374
 375 struct iwl_error_event_table {
 376         u32 valid;              /* (nonzero) valid, (0) log is empty */
 377         u32 error_id;           /* type of error */
 378         u32 trm_hw_status0;     /* TRM HW status */
 379         u32 trm_hw_status1;     /* TRM HW status */
 380         u32 blink2;             /* branch link */
 381         u32 ilink1;             /* interrupt link */
 382         u32 ilink2;             /* interrupt link */
 383         u32 data1;              /* error-specific data */
 384         u32 data2;              /* error-specific data */
 385         u32 data3;              /* error-specific data */
 386         u32 bcon_time;          /* beacon timer */
 387         u32 tsf_low;            /* network timestamp function timer */
 388         u32 tsf_hi;             /* network timestamp function timer */
 389         u32 gp1;                /* GP1 timer register */
 390         u32 gp2;                /* GP2 timer register */
 391         u32 fw_rev_type;        /* firmware revision type */
 392         u32 major;              /* uCode version major */
 393         u32 minor;              /* uCode version minor */
 394         u32 hw_ver;             /* HW Silicon version */
 395         u32 brd_ver;            /* HW board version */
 396         u32 log_pc;             /* log program counter */
 397         u32 frame_ptr;          /* frame pointer */
 398         u32 stack_ptr;          /* stack pointer */
 399         u32 hcmd;               /* last host command header */
 400         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 401                                  * rxtx_flag */
 402         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 403                                  * host_flag */
 404         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 405                                  * enc_flag */
 406         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 407                                  * time_flag */
 408         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 409                                  * wico interrupt */
 410         u32 last_cmd_id;        /* last HCMD id handled by the firmware */
 411         u32 wait_event;         /* wait event() caller address */
 412         u32 l2p_control;        /* L2pControlField */
 413         u32 l2p_duration;       /* L2pDurationField */
 414         u32 l2p_mhvalid;        /* L2pMhValidBits */
 415         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 416         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 417                                  * (LMPM_PMG_SEL) */
 418         u32 u_timestamp;        /* indicate when the date and time of the
 419                                  * compilation */
 420         u32 flow_handler;       /* FH read/write pointers, RX credit */
 421 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
 422
 423 /*
 424  * UMAC error struct - relevant starting from family 8000 chip.
 425  * Note: This structure is read from the device with IO accesses,
 426  * and the reading already does the endian conversion. As it is
 427  * read with u32-sized accesses, any members with a different size
 428  * need to be ordered correctly though!
 429  */
 430 struct iwl_umac_error_event_table {
 431         u32 valid;              /* (nonzero) valid, (0) log is empty */
 432         u32 error_id;           /* type of error */
 433         u32 blink1;             /* branch link */
 434         u32 blink2;             /* branch link */
 435         u32 ilink1;             /* interrupt link */
 436         u32 ilink2;             /* interrupt link */
 437         u32 data1;              /* error-specific data */
 438         u32 data2;              /* error-specific data */
 439         u32 data3;              /* error-specific data */
 440         u32 umac_major;
 441         u32 umac_minor;
 442         u32 frame_pointer;      /* core register 27*/
 443         u32 stack_pointer;      /* core register 28 */
 444         u32 cmd_header;         /* latest host cmd sent to UMAC */
 445         u32 nic_isr_pref;       /* ISR status register */
 446 } __packed;
 447
 448 #define ERROR_START_OFFSET  (1 * sizeof(u32))
 449 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
 450
 451 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
 452 {
 453         struct iwl_trans *trans = mvm->trans;
 454         struct iwl_umac_error_event_table table;
 455
 456         if (!mvm->support_umac_log)
 457                 return;
 458
 459         iwl_trans_read_mem_bytes(trans, mvm->umac_error_event_table, &table,
 460                                  sizeof(table));
 461
 462         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 463                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 464                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 465                         mvm->status, table.valid);
 466         }
 467
 468         IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
 469                 desc_lookup(table.error_id));
 470         IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
 471         IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
 472         IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
 473         IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
 474         IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
 475         IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
 476         IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
 477         IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
 478         IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
 479         IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
 480         IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
 481         IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
 482         IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
 483 }
 484
 485 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base)
 486 {
 487         struct iwl_trans *trans = mvm->trans;
 488         struct iwl_error_event_table table;
 489         u32 val;
 490
 491         if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
 492                 if (!base)
 493                         base = mvm->fw->init_errlog_ptr;
 494         } else {
 495                 if (!base)
 496                         base = mvm->fw->inst_errlog_ptr;
 497         }
 498
 499         if (base < 0x400000) {
 500                 IWL_ERR(mvm,
 501                         "Not valid error log pointer 0x%08X for %s uCode\n",
 502                         base,
 503                         (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
 504                         ? "Init" : "RT");
 505                 return;
 506         }
 507
 508         /* check if there is a HW error */
 509         val = iwl_trans_read_mem32(trans, base);
 510         if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
 511                 int err;
 512
 513                 IWL_ERR(trans, "HW error, resetting before reading\n");
 514
 515                 /* reset the device */
 516                 iwl_trans_sw_reset(trans);
 517
 518                 /* set INIT_DONE flag */
 519                 iwl_set_bit(trans, CSR_GP_CNTRL,
 520                             BIT(trans->cfg->csr->flag_init_done));
 521
 522                 /* and wait for clock stabilization */
 523                 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
 524                         udelay(2);
 525
 526                 err = iwl_poll_bit(trans, CSR_GP_CNTRL,
 527                                    BIT(trans->cfg->csr->flag_mac_clock_ready),
 528                                    BIT(trans->cfg->csr->flag_mac_clock_ready),
 529                                    25000);
 530                 if (err < 0) {
 531                         IWL_DEBUG_INFO(trans,
 532                                        "Failed to reset the card for the dump\n");
 533                         return;
 534                 }
 535         }
 536
 537         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 538
 539         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 540                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 541                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 542                         mvm->status, table.valid);
 543         }
 544
 545         /* Do not change this output - scripts rely on it */
 546
 547         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 548
 549         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 550                 desc_lookup(table.error_id));
 551         IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
 552         IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
 553         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 554         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 555         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 556         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 557         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 558         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 559         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 560         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 561         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 562         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 563         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 564         IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
 565         IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
 566         IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
 567         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 568         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 569         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 570         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 571         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 572         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 573         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 574         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 575         IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
 576         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 577         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 578         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 579         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 580         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 581         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 582         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 583         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 584 }
 585
 586 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
 587 {
 588         if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
 589                 IWL_ERR(mvm,
 590                         "DEVICE_ENABLED bit is not set. Aborting dump.\n");
 591                 return;
 592         }
 593
 594         iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]);
 595
 596         if (mvm->error_event_table[1])
 597                 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]);
 598
 599         iwl_mvm_dump_umac_error_log(mvm);
 600 }
 601
 602 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
 603                          int tid, int frame_limit, u16 ssn)
 604 {
 605         struct iwl_scd_txq_cfg_cmd cmd = {
 606                 .scd_queue = queue,
 607                 .action = SCD_CFG_ENABLE_QUEUE,
 608                 .window = frame_limit,
 609                 .sta_id = sta_id,
 610                 .ssn = cpu_to_le16(ssn),
 611                 .tx_fifo = fifo,
 612                 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
 613                               queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
 614                 .tid = tid,
 615         };
 616         int ret;
 617
 618         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
 619                 return -EINVAL;
 620
 621         if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
 622                  "Trying to reconfig unallocated queue %d\n", queue))
 623                 return -ENXIO;
 624
 625         IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
 626
 627         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
 628         WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
 629                   queue, fifo, ret);
 630
 631         return ret;
 632 }
 633
 634 /**
 635  * iwl_mvm_send_lq_cmd() - Send link quality command
 636  * @sync: This command can be sent synchronously.
 637  *
 638  * The link quality command is sent as the last step of station creation.
 639  * This is the special case in which init is set and we call a callback in
 640  * this case to clear the state indicating that station creation is in
 641  * progress.
 642  */
 643 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync)
 644 {
 645         struct iwl_host_cmd cmd = {
 646                 .id = LQ_CMD,
 647                 .len = { sizeof(struct iwl_lq_cmd), },
 648                 .flags = sync ? 0 : CMD_ASYNC,
 649                 .data = { lq, },
 650         };
 651
 652         if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
 653                     iwl_mvm_has_tlc_offload(mvm)))
 654                 return -EINVAL;
 655
 656         return iwl_mvm_send_cmd(mvm, &cmd);
 657 }
 658
 659 /**
 660  * iwl_mvm_update_smps - Get a request to change the SMPS mode
 661  * @req_type: The part of the driver who call for a change.
 662  * @smps_requests: The request to change the SMPS mode.
 663  *
 664  * Get a requst to change the SMPS mode,
 665  * and change it according to all other requests in the driver.
 666  */
 667 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 668                          enum iwl_mvm_smps_type_request req_type,
 669                          enum ieee80211_smps_mode smps_request)
 670 {
 671         struct iwl_mvm_vif *mvmvif;
 672         enum ieee80211_smps_mode smps_mode;
 673         int i;
 674
 675         lockdep_assert_held(&mvm->mutex);
 676
 677         /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
 678         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 679                 return;
 680
 681         if (vif->type == NL80211_IFTYPE_AP)
 682                 smps_mode = IEEE80211_SMPS_OFF;
 683         else
 684                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 685
 686         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 687         mvmvif->smps_requests[req_type] = smps_request;
 688         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 689                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
 690                         smps_mode = IEEE80211_SMPS_STATIC;
 691                         break;
 692                 }
 693                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 694                         smps_mode = IEEE80211_SMPS_DYNAMIC;
 695         }
 696
 697         ieee80211_request_smps(vif, smps_mode);
 698 }
 699
 700 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 701 {
 702         struct iwl_statistics_cmd scmd = {
 703                 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
 704         };
 705         struct iwl_host_cmd cmd = {
 706                 .id = STATISTICS_CMD,
 707                 .len[0] = sizeof(scmd),
 708                 .data[0] = &scmd,
 709                 .flags = CMD_WANT_SKB,
 710         };
 711         int ret;
 712
 713         ret = iwl_mvm_send_cmd(mvm, &cmd);
 714         if (ret)
 715                 return ret;
 716
 717         iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
 718         iwl_free_resp(&cmd);
 719
 720         if (clear)
 721                 iwl_mvm_accu_radio_stats(mvm);
 722
 723         return 0;
 724 }
 725
 726 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
 727 {
 728         mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
 729         mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
 730         mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
 731         mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
 732 }
 733
 734 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
 735                                    struct ieee80211_vif *vif)
 736 {
 737         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 738         bool *result = _data;
 739         int i;
 740
 741         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 742                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
 743                     mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 744                         *result = false;
 745         }
 746 }
 747
 748 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
 749 {
 750         bool result = true;
 751
 752         lockdep_assert_held(&mvm->mutex);
 753
 754         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 755                 return false;
 756
 757         if (mvm->cfg->rx_with_siso_diversity)
 758                 return false;
 759
 760         ieee80211_iterate_active_interfaces_atomic(
 761                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 762                         iwl_mvm_diversity_iter, &result);
 763
 764         return result;
 765 }
 766
 767 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 768                                bool low_latency,
 769                                enum iwl_mvm_low_latency_cause cause)
 770 {
 771         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 772         int res;
 773         bool prev;
 774
 775         lockdep_assert_held(&mvm->mutex);
 776
 777         prev = iwl_mvm_vif_low_latency(mvmvif);
 778         iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
 779
 780         low_latency = iwl_mvm_vif_low_latency(mvmvif);
 781
 782         if (low_latency == prev)
 783                 return 0;
 784
 785         if (fw_has_capa(&mvm->fw->ucode_capa,
 786                         IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) {
 787                 struct iwl_mac_low_latency_cmd cmd = {
 788                         .mac_id = cpu_to_le32(mvmvif->id)
 789                 };
 790
 791                 if (low_latency) {
 792                         /* currently we don't care about the direction */
 793                         cmd.low_latency_rx = 1;
 794                         cmd.low_latency_tx = 1;
 795                 }
 796                 res = iwl_mvm_send_cmd_pdu(mvm,
 797                                            iwl_cmd_id(LOW_LATENCY_CMD,
 798                                                       MAC_CONF_GROUP, 0),
 799                                            0, sizeof(cmd), &cmd);
 800                 if (res)
 801                         IWL_ERR(mvm, "Failed to send low latency command\n");
 802         }
 803
 804         res = iwl_mvm_update_quotas(mvm, false, NULL);
 805         if (res)
 806                 return res;
 807
 808         iwl_mvm_bt_coex_vif_change(mvm);
 809
 810         return iwl_mvm_power_update_mac(mvm);
 811 }
 812
 813 struct iwl_mvm_low_latency_iter {
 814         bool result;
 815         bool result_per_band[NUM_NL80211_BANDS];
 816 };
 817
 818 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
 819 {
 820         struct iwl_mvm_low_latency_iter *result = _data;
 821         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 822         enum nl80211_band band;
 823
 824         if (iwl_mvm_vif_low_latency(mvmvif)) {
 825                 result->result = true;
 826
 827                 if (!mvmvif->phy_ctxt)
 828                         return;
 829
 830                 band = mvmvif->phy_ctxt->channel->band;
 831                 result->result_per_band[band] = true;
 832         }
 833 }
 834
 835 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
 836 {
 837         struct iwl_mvm_low_latency_iter data = {};
 838
 839         ieee80211_iterate_active_interfaces_atomic(
 840                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 841                         iwl_mvm_ll_iter, &data);
 842
 843         return data.result;
 844 }
 845
 846 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
 847 {
 848         struct iwl_mvm_low_latency_iter data = {};
 849
 850         ieee80211_iterate_active_interfaces_atomic(
 851                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 852                         iwl_mvm_ll_iter, &data);
 853
 854         return data.result_per_band[band];
 855 }
 856
 857 struct iwl_bss_iter_data {
 858         struct ieee80211_vif *vif;
 859         bool error;
 860 };
 861
 862 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
 863                                        struct ieee80211_vif *vif)
 864 {
 865         struct iwl_bss_iter_data *data = _data;
 866
 867         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 868                 return;
 869
 870         if (data->vif) {
 871                 data->error = true;
 872                 return;
 873         }
 874
 875         data->vif = vif;
 876 }
 877
 878 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
 879 {
 880         struct iwl_bss_iter_data bss_iter_data = {};
 881
 882         ieee80211_iterate_active_interfaces_atomic(
 883                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 884                 iwl_mvm_bss_iface_iterator, &bss_iter_data);
 885
 886         if (bss_iter_data.error) {
 887                 IWL_ERR(mvm, "More than one managed interface active!\n");
 888                 return ERR_PTR(-EINVAL);
 889         }
 890
 891         return bss_iter_data.vif;
 892 }
 893
 894 struct iwl_sta_iter_data {
 895         bool assoc;
 896 };
 897
 898 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
 899                                        struct ieee80211_vif *vif)
 900 {
 901         struct iwl_sta_iter_data *data = _data;
 902
 903         if (vif->type != NL80211_IFTYPE_STATION)
 904                 return;
 905
 906         if (vif->bss_conf.assoc)
 907                 data->assoc = true;
 908 }
 909
 910 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
 911 {
 912         struct iwl_sta_iter_data data = {
 913                 .assoc = false,
 914         };
 915
 916         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 917                                                    IEEE80211_IFACE_ITER_NORMAL,
 918                                                    iwl_mvm_sta_iface_iterator,
 919                                                    &data);
 920         return data.assoc;
 921 }
 922
 923 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
 924                                     struct ieee80211_vif *vif,
 925                                     bool tdls, bool cmd_q)
 926 {
 927         struct iwl_fw_dbg_trigger_tlv *trigger;
 928         struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
 929         unsigned int default_timeout =
 930                 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
 931
 932         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
 933                 /*
 934                  * We can't know when the station is asleep or awake, so we
 935                  * must disable the queue hang detection.
 936                  */
 937                 if (fw_has_capa(&mvm->fw->ucode_capa,
 938                                 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
 939                     vif && vif->type == NL80211_IFTYPE_AP)
 940                         return IWL_WATCHDOG_DISABLED;
 941                 return iwlmvm_mod_params.tfd_q_hang_detect ?
 942                         default_timeout : IWL_WATCHDOG_DISABLED;
 943         }
 944
 945         trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
 946         txq_timer = (void *)trigger->data;
 947
 948         if (tdls)
 949                 return le32_to_cpu(txq_timer->tdls);
 950
 951         if (cmd_q)
 952                 return le32_to_cpu(txq_timer->command_queue);
 953
 954         if (WARN_ON(!vif))
 955                 return default_timeout;
 956
 957         switch (ieee80211_vif_type_p2p(vif)) {
 958         case NL80211_IFTYPE_ADHOC:
 959                 return le32_to_cpu(txq_timer->ibss);
 960         case NL80211_IFTYPE_STATION:
 961                 return le32_to_cpu(txq_timer->bss);
 962         case NL80211_IFTYPE_AP:
 963                 return le32_to_cpu(txq_timer->softap);
 964         case NL80211_IFTYPE_P2P_CLIENT:
 965                 return le32_to_cpu(txq_timer->p2p_client);
 966         case NL80211_IFTYPE_P2P_GO:
 967                 return le32_to_cpu(txq_timer->p2p_go);
 968         case NL80211_IFTYPE_P2P_DEVICE:
 969                 return le32_to_cpu(txq_timer->p2p_device);
 970         case NL80211_IFTYPE_MONITOR:
 971                 return default_timeout;
 972         default:
 973                 WARN_ON(1);
 974                 return mvm->cfg->base_params->wd_timeout;
 975         }
 976 }
 977
 978 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 979                              const char *errmsg)
 980 {
 981         struct iwl_fw_dbg_trigger_tlv *trig;
 982         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
 983
 984         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
 985                                      FW_DBG_TRIGGER_MLME);
 986         if (!trig)
 987                 goto out;
 988
 989         trig_mlme = (void *)trig->data;
 990
 991         if (trig_mlme->stop_connection_loss &&
 992             --trig_mlme->stop_connection_loss)
 993                 goto out;
 994
 995         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
 996
 997 out:
 998         ieee80211_connection_loss(vif);
 999 }
1000
1001 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
1002                                           struct ieee80211_vif *vif,
1003                                           const struct ieee80211_sta *sta,
1004                                           u16 tid)
1005 {
1006         struct iwl_fw_dbg_trigger_tlv *trig;
1007         struct iwl_fw_dbg_trigger_ba *ba_trig;
1008
1009         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1010                                      FW_DBG_TRIGGER_BA);
1011         if (!trig)
1012                 return;
1013
1014         ba_trig = (void *)trig->data;
1015
1016         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
1017                 return;
1018
1019         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1020                                 "Frame from %pM timed out, tid %d",
1021                                 sta->addr, tid);
1022 }
1023
1024 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
1025 {
1026         if (!elapsed)
1027                 return 0;
1028
1029         return (100 * airtime / elapsed) / USEC_PER_MSEC;
1030 }
1031
1032 static enum iwl_mvm_traffic_load
1033 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
1034 {
1035         u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
1036
1037         if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
1038                 return IWL_MVM_TRAFFIC_HIGH;
1039         if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
1040                 return IWL_MVM_TRAFFIC_MEDIUM;
1041
1042         return IWL_MVM_TRAFFIC_LOW;
1043 }
1044
1045 struct iwl_mvm_tcm_iter_data {
1046         struct iwl_mvm *mvm;
1047         bool any_sent;
1048 };
1049
1050 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1051 {
1052         struct iwl_mvm_tcm_iter_data *data = _data;
1053         struct iwl_mvm *mvm = data->mvm;
1054         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1055         bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
1056
1057         if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
1058                 return;
1059
1060         low_latency = mvm->tcm.result.low_latency[mvmvif->id];
1061
1062         if (!mvm->tcm.result.change[mvmvif->id] &&
1063             prev == low_latency) {
1064                 iwl_mvm_update_quotas(mvm, false, NULL);
1065                 return;
1066         }
1067
1068         if (prev != low_latency) {
1069                 /* this sends traffic load and updates quota as well */
1070                 iwl_mvm_update_low_latency(mvm, vif, low_latency,
1071                                            LOW_LATENCY_TRAFFIC);
1072         } else {
1073                 iwl_mvm_update_quotas(mvm, false, NULL);
1074         }
1075
1076         data->any_sent = true;
1077 }
1078
1079 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
1080 {
1081         struct iwl_mvm_tcm_iter_data data = {
1082                 .mvm = mvm,
1083                 .any_sent = false,
1084         };
1085
1086         mutex_lock(&mvm->mutex);
1087
1088         ieee80211_iterate_active_interfaces(
1089                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1090                 iwl_mvm_tcm_iter, &data);
1091
1092         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1093                 iwl_mvm_config_scan(mvm);
1094
1095         mutex_unlock(&mvm->mutex);
1096 }
1097
1098 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
1099 {
1100         struct iwl_mvm *mvm;
1101         struct iwl_mvm_vif *mvmvif;
1102         struct ieee80211_vif *vif;
1103
1104         mvmvif = container_of(wk, struct iwl_mvm_vif,
1105                               uapsd_nonagg_detected_wk.work);
1106         vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1107         mvm = mvmvif->mvm;
1108
1109         if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
1110                 return;
1111
1112         /* remember that this AP is broken */
1113         memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
1114                vif->bss_conf.bssid, ETH_ALEN);
1115         mvm->uapsd_noagg_bssid_write_idx++;
1116         if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
1117                 mvm->uapsd_noagg_bssid_write_idx = 0;
1118
1119         iwl_mvm_connection_loss(mvm, vif,
1120                                 "AP isn't using AMPDU with uAPSD enabled");
1121 }
1122
1123 static void iwl_mvm_uapsd_agg_disconnect_iter(void *data, u8 *mac,
1124                                               struct ieee80211_vif *vif)
1125 {
1126         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1127         struct iwl_mvm *mvm = mvmvif->mvm;
1128         int *mac_id = data;
1129
1130         if (vif->type != NL80211_IFTYPE_STATION)
1131                 return;
1132
1133         if (mvmvif->id != *mac_id)
1134                 return;
1135
1136         if (!vif->bss_conf.assoc)
1137                 return;
1138
1139         if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
1140             !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
1141             !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
1142             !mvmvif->queue_params[IEEE80211_AC_BK].uapsd)
1143                 return;
1144
1145         if (mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected)
1146                 return;
1147
1148         mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected = true;
1149         IWL_INFO(mvm,
1150                  "detected AP should do aggregation but isn't, likely due to U-APSD\n");
1151         schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ);
1152 }
1153
1154 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
1155                                                  unsigned int elapsed,
1156                                                  int mac)
1157 {
1158         u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
1159         u64 tpt;
1160         unsigned long rate;
1161
1162         rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
1163
1164         if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
1165             mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
1166                 return;
1167
1168         if (iwl_mvm_has_new_rx_api(mvm)) {
1169                 tpt = 8 * bytes; /* kbps */
1170                 do_div(tpt, elapsed);
1171                 rate *= 1000; /* kbps */
1172                 if (tpt < 22 * rate / 100)
1173                         return;
1174         } else {
1175                 /*
1176                  * the rate here is actually the threshold, in 100Kbps units,
1177                  * so do the needed conversion from bytes to 100Kbps:
1178                  * 100kb = bits / (100 * 1000),
1179                  * 100kbps = 100kb / (msecs / 1000) ==
1180                  *           (bits / (100 * 1000)) / (msecs / 1000) ==
1181                  *           bits / (100 * msecs)
1182                  */
1183                 tpt = (8 * bytes);
1184                 do_div(tpt, elapsed * 100);
1185                 if (tpt < rate)
1186                         return;
1187         }
1188
1189         ieee80211_iterate_active_interfaces_atomic(
1190                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1191                 iwl_mvm_uapsd_agg_disconnect_iter, &mac);
1192 }
1193
1194 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
1195                                  struct ieee80211_vif *vif)
1196 {
1197         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1198         u32 *band = _data;
1199
1200         if (!mvmvif->phy_ctxt)
1201                 return;
1202
1203         band[mvmvif->id] = mvmvif->phy_ctxt->channel->band;
1204 }
1205
1206 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
1207                                             unsigned long ts,
1208                                             bool handle_uapsd)
1209 {
1210         unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
1211         unsigned int uapsd_elapsed =
1212                 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
1213         u32 total_airtime = 0;
1214         u32 band_airtime[NUM_NL80211_BANDS] = {0};
1215         u32 band[NUM_MAC_INDEX_DRIVER] = {0};
1216         int ac, mac, i;
1217         bool low_latency = false;
1218         enum iwl_mvm_traffic_load load, band_load;
1219         bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
1220
1221         if (handle_ll)
1222                 mvm->tcm.ll_ts = ts;
1223         if (handle_uapsd)
1224                 mvm->tcm.uapsd_nonagg_ts = ts;
1225
1226         mvm->tcm.result.elapsed = elapsed;
1227
1228         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1229                                                    IEEE80211_IFACE_ITER_NORMAL,
1230                                                    iwl_mvm_tcm_iterator,
1231                                                    &band);
1232
1233         for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1234                 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1235                 u32 vo_vi_pkts = 0;
1236                 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1237
1238                 total_airtime += airtime;
1239                 band_airtime[band[mac]] += airtime;
1240
1241                 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1242                 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1243                 mvm->tcm.result.load[mac] = load;
1244                 mvm->tcm.result.airtime[mac] = airtime;
1245
1246                 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1247                         vo_vi_pkts += mdata->rx.pkts[ac] +
1248                                       mdata->tx.pkts[ac];
1249
1250                 /* enable immediately with enough packets but defer disabling */
1251                 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1252                         mvm->tcm.result.low_latency[mac] = true;
1253                 else if (handle_ll)
1254                         mvm->tcm.result.low_latency[mac] = false;
1255
1256                 if (handle_ll) {
1257                         /* clear old data */
1258                         memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1259                         memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1260                 }
1261                 low_latency |= mvm->tcm.result.low_latency[mac];
1262
1263                 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1264                         iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1265                                                              mac);
1266                 /* clear old data */
1267                 if (handle_uapsd)
1268                         mdata->uapsd_nonagg_detect.rx_bytes = 0;
1269                 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1270                 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1271         }
1272
1273         load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1274         mvm->tcm.result.global_change = load != mvm->tcm.result.global_load;
1275         mvm->tcm.result.global_load = load;
1276
1277         for (i = 0; i < NUM_NL80211_BANDS; i++) {
1278                 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1279                 mvm->tcm.result.band_load[i] = band_load;
1280         }
1281
1282         /*
1283          * If the current load isn't low we need to force re-evaluation
1284          * in the TCM period, so that we can return to low load if there
1285          * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1286          * triggered by traffic).
1287          */
1288         if (load != IWL_MVM_TRAFFIC_LOW)
1289                 return MVM_TCM_PERIOD;
1290         /*
1291          * If low-latency is active we need to force re-evaluation after
1292          * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1293          * when there's no traffic at all.
1294          */
1295         if (low_latency)
1296                 return MVM_LL_PERIOD;
1297         /*
1298          * Otherwise, we don't need to run the work struct because we're
1299          * in the default "idle" state - traffic indication is low (which
1300          * also covers the "no traffic" case) and low-latency is disabled
1301          * so there's no state that may need to be disabled when there's
1302          * no traffic at all.
1303          *
1304          * Note that this has no impact on the regular scheduling of the
1305          * updates triggered by traffic - those happen whenever one of the
1306          * two timeouts expire (if there's traffic at all.)
1307          */
1308         return 0;
1309 }
1310
1311 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1312 {
1313         unsigned long ts = jiffies;
1314         bool handle_uapsd =
1315                 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1316                                msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1317
1318         spin_lock(&mvm->tcm.lock);
1319         if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1320                 spin_unlock(&mvm->tcm.lock);
1321                 return;
1322         }
1323         spin_unlock(&mvm->tcm.lock);
1324
1325         if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1326                 mutex_lock(&mvm->mutex);
1327                 if (iwl_mvm_request_statistics(mvm, true))
1328                         handle_uapsd = false;
1329                 mutex_unlock(&mvm->mutex);
1330         }
1331
1332         spin_lock(&mvm->tcm.lock);
1333         /* re-check if somebody else won the recheck race */
1334         if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1335                 /* calculate statistics */
1336                 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1337                                                                   handle_uapsd);
1338
1339                 /* the memset needs to be visible before the timestamp */
1340                 smp_mb();
1341                 mvm->tcm.ts = ts;
1342                 if (work_delay)
1343                         schedule_delayed_work(&mvm->tcm.work, work_delay);
1344         }
1345         spin_unlock(&mvm->tcm.lock);
1346
1347         iwl_mvm_tcm_results(mvm);
1348 }
1349
1350 void iwl_mvm_tcm_work(struct work_struct *work)
1351 {
1352         struct delayed_work *delayed_work = to_delayed_work(work);
1353         struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1354                                            tcm.work);
1355
1356         iwl_mvm_recalc_tcm(mvm);
1357 }
1358
1359 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1360 {
1361         spin_lock_bh(&mvm->tcm.lock);
1362         mvm->tcm.paused = true;
1363         spin_unlock_bh(&mvm->tcm.lock);
1364         if (with_cancel)
1365                 cancel_delayed_work_sync(&mvm->tcm.work);
1366 }
1367
1368 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1369 {
1370         int mac;
1371
1372         spin_lock_bh(&mvm->tcm.lock);
1373         mvm->tcm.ts = jiffies;
1374         mvm->tcm.ll_ts = jiffies;
1375         for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1376                 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1377
1378                 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1379                 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1380                 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1381                 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1382         }
1383         /* The TCM data needs to be reset before "paused" flag changes */
1384         smp_mb();
1385         mvm->tcm.paused = false;
1386         spin_unlock_bh(&mvm->tcm.lock);
1387 }
1388
1389 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1390 {
1391         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1392
1393         INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1394                           iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1395 }
1396
1397 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1398 {
1399         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1400
1401         cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1402 }
1403
1404
1405 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1406 {
1407         bool ps_disabled;
1408
1409         lockdep_assert_held(&mvm->mutex);
1410
1411         /* Disable power save when reading GP2 */
1412         ps_disabled = mvm->ps_disabled;
1413         if (!ps_disabled) {
1414                 mvm->ps_disabled = true;
1415                 iwl_mvm_power_update_device(mvm);
1416         }
1417
1418         *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
1419         *boottime = ktime_get_boot_ns();
1420
1421         if (!ps_disabled) {
1422                 mvm->ps_disabled = ps_disabled;
1423                 iwl_mvm_power_update_device(mvm);
1424         }
1425 }