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

   1 /******************************************************************************
   2  *
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   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
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  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
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  44  *    the documentation and/or other materials provided with the
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  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <net/mac80211.h>
  64
  65 #include "iwl-debug.h"
  66 #include "iwl-io.h"
  67 #include "iwl-prph.h"
  68
  69 #include "mvm.h"
  70 #include "fw-api-rs.h"
  71
  72 /*
  73  * Will return 0 even if the cmd failed when RFKILL is asserted unless
  74  * CMD_WANT_SKB is set in cmd->flags.
  75  */
  76 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
  77 {
  78         int ret;
  79
  80 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
  81         if (WARN_ON(mvm->d3_test_active))
  82                 return -EIO;
  83 #endif
  84
  85         /*
  86          * Synchronous commands from this op-mode must hold
  87          * the mutex, this ensures we don't try to send two
  88          * (or more) synchronous commands at a time.
  89          */
  90         if (!(cmd->flags & CMD_ASYNC))
  91                 lockdep_assert_held(&mvm->mutex);
  92
  93         ret = iwl_trans_send_cmd(mvm->trans, cmd);
  94
  95         /*
  96          * If the caller wants the SKB, then don't hide any problems, the
  97          * caller might access the response buffer which will be NULL if
  98          * the command failed.
  99          */
 100         if (cmd->flags & CMD_WANT_SKB)
 101                 return ret;
 102
 103         /* Silently ignore failures if RFKILL is asserted */
 104         if (!ret || ret == -ERFKILL)
 105                 return 0;
 106         return ret;
 107 }
 108
 109 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
 110                          u32 flags, u16 len, const void *data)
 111 {
 112         struct iwl_host_cmd cmd = {
 113                 .id = id,
 114                 .len = { len, },
 115                 .data = { data, },
 116                 .flags = flags,
 117         };
 118
 119         return iwl_mvm_send_cmd(mvm, &cmd);
 120 }
 121
 122 /*
 123  * We assume that the caller set the status to the sucess value
 124  */
 125 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
 126                             u32 *status)
 127 {
 128         struct iwl_rx_packet *pkt;
 129         struct iwl_cmd_response *resp;
 130         int ret, resp_len;
 131
 132         lockdep_assert_held(&mvm->mutex);
 133
 134 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
 135         if (WARN_ON(mvm->d3_test_active))
 136                 return -EIO;
 137 #endif
 138
 139         /*
 140          * Only synchronous commands can wait for status,
 141          * we use WANT_SKB so the caller can't.
 142          */
 143         if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
 144                       "cmd flags %x", cmd->flags))
 145                 return -EINVAL;
 146
 147         cmd->flags |= CMD_WANT_SKB;
 148
 149         ret = iwl_trans_send_cmd(mvm->trans, cmd);
 150         if (ret == -ERFKILL) {
 151                 /*
 152                  * The command failed because of RFKILL, don't update
 153                  * the status, leave it as success and return 0.
 154                  */
 155                 return 0;
 156         } else if (ret) {
 157                 return ret;
 158         }
 159
 160         pkt = cmd->resp_pkt;
 161         /* Can happen if RFKILL is asserted */
 162         if (!pkt) {
 163                 ret = 0;
 164                 goto out_free_resp;
 165         }
 166
 167         if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 168                 ret = -EIO;
 169                 goto out_free_resp;
 170         }
 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, u8 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 ieee80211_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 == IEEE80211_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 int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 245                           struct iwl_device_cmd *cmd)
 246 {
 247         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 248         struct iwl_error_resp *err_resp = (void *)pkt->data;
 249
 250         IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
 251                 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
 252         IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
 253                 le16_to_cpu(err_resp->bad_cmd_seq_num),
 254                 le32_to_cpu(err_resp->error_service));
 255         IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
 256                 le64_to_cpu(err_resp->timestamp));
 257         return 0;
 258 }
 259
 260 /*
 261  * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
 262  * The parameter should also be a combination of ANT_[ABC].
 263  */
 264 u8 first_antenna(u8 mask)
 265 {
 266         BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
 267         if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
 268                 return BIT(0);
 269         return BIT(ffs(mask) - 1);
 270 }
 271
 272 /*
 273  * Toggles between TX antennas to send the probe request on.
 274  * Receives the bitmask of valid TX antennas and the *index* used
 275  * for the last TX, and returns the next valid *index* to use.
 276  * In order to set it in the tx_cmd, must do BIT(idx).
 277  */
 278 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
 279 {
 280         u8 ind = last_idx;
 281         int i;
 282
 283         for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
 284                 ind = (ind + 1) % RATE_MCS_ANT_NUM;
 285                 if (valid & BIT(ind))
 286                         return ind;
 287         }
 288
 289         WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
 290         return last_idx;
 291 }
 292
 293 static const struct {
 294         const char *name;
 295         u8 num;
 296 } advanced_lookup[] = {
 297         { "NMI_INTERRUPT_WDG", 0x34 },
 298         { "SYSASSERT", 0x35 },
 299         { "UCODE_VERSION_MISMATCH", 0x37 },
 300         { "BAD_COMMAND", 0x38 },
 301         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
 302         { "FATAL_ERROR", 0x3D },
 303         { "NMI_TRM_HW_ERR", 0x46 },
 304         { "NMI_INTERRUPT_TRM", 0x4C },
 305         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
 306         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
 307         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
 308         { "NMI_INTERRUPT_HOST", 0x66 },
 309         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
 310         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
 311         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
 312         { "ADVANCED_SYSASSERT", 0 },
 313 };
 314
 315 static const char *desc_lookup(u32 num)
 316 {
 317         int i;
 318
 319         for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
 320                 if (advanced_lookup[i].num == num)
 321                         return advanced_lookup[i].name;
 322
 323         /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
 324         return advanced_lookup[i].name;
 325 }
 326
 327 /*
 328  * Note: This structure is read from the device with IO accesses,
 329  * and the reading already does the endian conversion. As it is
 330  * read with u32-sized accesses, any members with a different size
 331  * need to be ordered correctly though!
 332  */
 333 struct iwl_error_event_table {
 334         u32 valid;              /* (nonzero) valid, (0) log is empty */
 335         u32 error_id;           /* type of error */
 336         u32 pc;                 /* program counter */
 337         u32 blink1;             /* branch link */
 338         u32 blink2;             /* branch link */
 339         u32 ilink1;             /* interrupt link */
 340         u32 ilink2;             /* interrupt link */
 341         u32 data1;              /* error-specific data */
 342         u32 data2;              /* error-specific data */
 343         u32 data3;              /* error-specific data */
 344         u32 bcon_time;          /* beacon timer */
 345         u32 tsf_low;            /* network timestamp function timer */
 346         u32 tsf_hi;             /* network timestamp function timer */
 347         u32 gp1;                /* GP1 timer register */
 348         u32 gp2;                /* GP2 timer register */
 349         u32 gp3;                /* GP3 timer register */
 350         u32 ucode_ver;          /* uCode version */
 351         u32 hw_ver;             /* HW Silicon version */
 352         u32 brd_ver;            /* HW board version */
 353         u32 log_pc;             /* log program counter */
 354         u32 frame_ptr;          /* frame pointer */
 355         u32 stack_ptr;          /* stack pointer */
 356         u32 hcmd;               /* last host command header */
 357         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 358                                  * rxtx_flag */
 359         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 360                                  * host_flag */
 361         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 362                                  * enc_flag */
 363         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 364                                  * time_flag */
 365         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 366                                  * wico interrupt */
 367         u32 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 368         u32 wait_event;         /* wait event() caller address */
 369         u32 l2p_control;        /* L2pControlField */
 370         u32 l2p_duration;       /* L2pDurationField */
 371         u32 l2p_mhvalid;        /* L2pMhValidBits */
 372         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 373         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 374                                  * (LMPM_PMG_SEL) */
 375         u32 u_timestamp;        /* indicate when the date and time of the
 376                                  * compilation */
 377         u32 flow_handler;       /* FH read/write pointers, RX credit */
 378 } __packed;
 379
 380 /*
 381  * UMAC error struct - relevant starting from family 8000 chip.
 382  * Note: This structure is read from the device with IO accesses,
 383  * and the reading already does the endian conversion. As it is
 384  * read with u32-sized accesses, any members with a different size
 385  * need to be ordered correctly though!
 386  */
 387 struct iwl_umac_error_event_table {
 388         u32 valid;              /* (nonzero) valid, (0) log is empty */
 389         u32 error_id;           /* type of error */
 390         u32 blink1;             /* branch link */
 391         u32 blink2;             /* branch link */
 392         u32 ilink1;             /* interrupt link */
 393         u32 ilink2;             /* interrupt link */
 394         u32 data1;              /* error-specific data */
 395         u32 data2;              /* error-specific data */
 396         u32 data3;              /* error-specific data */
 397         u32 umac_fw_ver;        /* UMAC version */
 398         u32 umac_fw_api_ver;    /* UMAC FW API ver */
 399         u32 frame_pointer;      /* core register 27*/
 400         u32 stack_pointer;      /* core register 28 */
 401         u32 cmd_header; /* latest host cmd sent to UMAC */
 402         u32 nic_isr_pref;       /* ISR status register */
 403 } __packed;
 404
 405 #define ERROR_START_OFFSET  (1 * sizeof(u32))
 406 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
 407
 408 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
 409 {
 410         struct iwl_trans *trans = mvm->trans;
 411         struct iwl_umac_error_event_table table;
 412         u32 base;
 413
 414         base = mvm->umac_error_event_table;
 415
 416         if (base < 0x800000) {
 417                 IWL_ERR(mvm,
 418                         "Not valid error log pointer 0x%08X for %s uCode\n",
 419                         base,
 420                         (mvm->cur_ucode == IWL_UCODE_INIT)
 421                                         ? "Init" : "RT");
 422                 return;
 423         }
 424
 425         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 426
 427         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 428                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 429                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 430                         mvm->status, table.valid);
 431         }
 432
 433         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 434                 desc_lookup(table.error_id));
 435         IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
 436         IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
 437         IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
 438         IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
 439         IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
 440         IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
 441         IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
 442         IWL_ERR(mvm, "0x%08X | umac version\n", table.umac_fw_ver);
 443         IWL_ERR(mvm, "0x%08X | umac api version\n", table.umac_fw_api_ver);
 444         IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
 445         IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
 446         IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
 447         IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
 448 }
 449
 450 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
 451 {
 452         struct iwl_trans *trans = mvm->trans;
 453         struct iwl_error_event_table table;
 454         u32 base;
 455
 456         base = mvm->error_event_table;
 457         if (mvm->cur_ucode == IWL_UCODE_INIT) {
 458                 if (!base)
 459                         base = mvm->fw->init_errlog_ptr;
 460         } else {
 461                 if (!base)
 462                         base = mvm->fw->inst_errlog_ptr;
 463         }
 464
 465         if (base < 0x800000) {
 466                 IWL_ERR(mvm,
 467                         "Not valid error log pointer 0x%08X for %s uCode\n",
 468                         base,
 469                         (mvm->cur_ucode == IWL_UCODE_INIT)
 470                                         ? "Init" : "RT");
 471                 return;
 472         }
 473
 474         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 475
 476         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 477                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 478                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 479                         mvm->status, table.valid);
 480         }
 481
 482         /* Do not change this output - scripts rely on it */
 483
 484         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 485
 486         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 487                                       table.data1, table.data2, table.data3,
 488                                       table.blink1, table.blink2, table.ilink1,
 489                                       table.ilink2, table.bcon_time, table.gp1,
 490                                       table.gp2, table.gp3, table.ucode_ver,
 491                                       table.hw_ver, table.brd_ver);
 492         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 493                 desc_lookup(table.error_id));
 494         IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
 495         IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
 496         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 497         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 498         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 499         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 500         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 501         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 502         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 503         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 504         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 505         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 506         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 507         IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
 508         IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
 509         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 510         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 511         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 512         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 513         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 514         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 515         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 516         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 517         IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
 518         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 519         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 520         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 521         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 522         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 523         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 524         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 525         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 526
 527         if (mvm->support_umac_log)
 528                 iwl_mvm_dump_umac_error_log(mvm);
 529 }
 530
 531 /**
 532  * iwl_mvm_send_lq_cmd() - Send link quality command
 533  * @init: This command is sent as part of station initialization right
 534  *        after station has been added.
 535  *
 536  * The link quality command is sent as the last step of station creation.
 537  * This is the special case in which init is set and we call a callback in
 538  * this case to clear the state indicating that station creation is in
 539  * progress.
 540  */
 541 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
 542 {
 543         struct iwl_host_cmd cmd = {
 544                 .id = LQ_CMD,
 545                 .len = { sizeof(struct iwl_lq_cmd), },
 546                 .flags = init ? 0 : CMD_ASYNC,
 547                 .data = { lq, },
 548         };
 549
 550         if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
 551                 return -EINVAL;
 552
 553         return iwl_mvm_send_cmd(mvm, &cmd);
 554 }
 555
 556 /**
 557  * iwl_mvm_update_smps - Get a requst to change the SMPS mode
 558  * @req_type: The part of the driver who call for a change.
 559  * @smps_requests: The request to change the SMPS mode.
 560  *
 561  * Get a requst to change the SMPS mode,
 562  * and change it according to all other requests in the driver.
 563  */
 564 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 565                          enum iwl_mvm_smps_type_request req_type,
 566                          enum ieee80211_smps_mode smps_request)
 567 {
 568         struct iwl_mvm_vif *mvmvif;
 569         enum ieee80211_smps_mode smps_mode;
 570         int i;
 571
 572         lockdep_assert_held(&mvm->mutex);
 573
 574         /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
 575         if (num_of_ant(mvm->fw->valid_rx_ant) == 1)
 576                 return;
 577
 578         if (vif->type == NL80211_IFTYPE_AP)
 579                 smps_mode = IEEE80211_SMPS_OFF;
 580         else
 581                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 582
 583         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 584         mvmvif->smps_requests[req_type] = smps_request;
 585         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 586                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
 587                         smps_mode = IEEE80211_SMPS_STATIC;
 588                         break;
 589                 }
 590                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 591                         smps_mode = IEEE80211_SMPS_DYNAMIC;
 592         }
 593
 594         ieee80211_request_smps(vif, smps_mode);
 595 }
 596
 597 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
 598                                    struct ieee80211_vif *vif)
 599 {
 600         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 601         bool *result = _data;
 602         int i;
 603
 604         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 605                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
 606                     mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 607                         *result = false;
 608         }
 609 }
 610
 611 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
 612 {
 613         bool result = true;
 614
 615         lockdep_assert_held(&mvm->mutex);
 616
 617         if (num_of_ant(mvm->fw->valid_rx_ant) == 1)
 618                 return false;
 619
 620         if (!mvm->cfg->rx_with_siso_diversity)
 621                 return false;
 622
 623         ieee80211_iterate_active_interfaces_atomic(
 624                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 625                         iwl_mvm_diversity_iter, &result);
 626
 627         return result;
 628 }
 629
 630 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 631                                bool value)
 632 {
 633         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 634         int res;
 635
 636         lockdep_assert_held(&mvm->mutex);
 637
 638         if (mvmvif->low_latency == value)
 639                 return 0;
 640
 641         mvmvif->low_latency = value;
 642
 643         res = iwl_mvm_update_quotas(mvm, NULL);
 644         if (res)
 645                 return res;
 646
 647         iwl_mvm_bt_coex_vif_change(mvm);
 648
 649         return iwl_mvm_power_update_mac(mvm);
 650 }
 651
 652 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
 653 {
 654         bool *result = _data;
 655
 656         if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
 657                 *result = true;
 658 }
 659
 660 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
 661 {
 662         bool result = false;
 663
 664         ieee80211_iterate_active_interfaces_atomic(
 665                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 666                         iwl_mvm_ll_iter, &result);
 667
 668         return result;
 669 }
 670
 671 static void iwl_mvm_idle_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
 672 {
 673         bool *idle = _data;
 674
 675         if (!vif->bss_conf.idle)
 676                 *idle = false;
 677 }
 678
 679 bool iwl_mvm_is_idle(struct iwl_mvm *mvm)
 680 {
 681         bool idle = true;
 682
 683         ieee80211_iterate_active_interfaces_atomic(
 684                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 685                         iwl_mvm_idle_iter, &idle);
 686
 687         return idle;
 688 }