drivers/net/wireless/iwlegacy/4965.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  *  Intel Linux Wireless <ilw@linux.intel.com>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  *****************************************************************************/
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <linux/delay.h>
  33 #include <linux/sched.h>
  34 #include <linux/skbuff.h>
  35 #include <linux/netdevice.h>
  36 #include <net/mac80211.h>
  37 #include <linux/etherdevice.h>
  38 #include <asm/unaligned.h>
  39
  40 #include "common.h"
  41 #include "4965.h"
  42
  43 /**
  44  * il_verify_inst_sparse - verify runtime uCode image in card vs. host,
  45  *   using sample data 100 bytes apart.  If these sample points are good,
  46  *   it's a pretty good bet that everything between them is good, too.
  47  */
  48 static int
  49 il4965_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len)
  50 {
  51         u32 val;
  52         int ret = 0;
  53         u32 errcnt = 0;
  54         u32 i;
  55
  56         D_INFO("ucode inst image size is %u\n", len);
  57
  58         for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) {
  59                 /* read data comes through single port, auto-incr addr */
  60                 /* NOTE: Use the debugless read so we don't flood kernel log
  61                  * if IL_DL_IO is set */
  62                 il_wr(il, HBUS_TARG_MEM_RADDR, i + IL4965_RTC_INST_LOWER_BOUND);
  63                 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
  64                 if (val != le32_to_cpu(*image)) {
  65                         ret = -EIO;
  66                         errcnt++;
  67                         if (errcnt >= 3)
  68                                 break;
  69                 }
  70         }
  71
  72         return ret;
  73 }
  74
  75 /**
  76  * il4965_verify_inst_full - verify runtime uCode image in card vs. host,
  77  *     looking at all data.
  78  */
  79 static int
  80 il4965_verify_inst_full(struct il_priv *il, __le32 * image, u32 len)
  81 {
  82         u32 val;
  83         u32 save_len = len;
  84         int ret = 0;
  85         u32 errcnt;
  86
  87         D_INFO("ucode inst image size is %u\n", len);
  88
  89         il_wr(il, HBUS_TARG_MEM_RADDR, IL4965_RTC_INST_LOWER_BOUND);
  90
  91         errcnt = 0;
  92         for (; len > 0; len -= sizeof(u32), image++) {
  93                 /* read data comes through single port, auto-incr addr */
  94                 /* NOTE: Use the debugless read so we don't flood kernel log
  95                  * if IL_DL_IO is set */
  96                 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
  97                 if (val != le32_to_cpu(*image)) {
  98                         IL_ERR("uCode INST section is invalid at "
  99                                "offset 0x%x, is 0x%x, s/b 0x%x\n",
 100                                save_len - len, val, le32_to_cpu(*image));
 101                         ret = -EIO;
 102                         errcnt++;
 103                         if (errcnt >= 20)
 104                                 break;
 105                 }
 106         }
 107
 108         if (!errcnt)
 109                 D_INFO("ucode image in INSTRUCTION memory is good\n");
 110
 111         return ret;
 112 }
 113
 114 /**
 115  * il4965_verify_ucode - determine which instruction image is in SRAM,
 116  *    and verify its contents
 117  */
 118 int
 119 il4965_verify_ucode(struct il_priv *il)
 120 {
 121         __le32 *image;
 122         u32 len;
 123         int ret;
 124
 125         /* Try bootstrap */
 126         image = (__le32 *) il->ucode_boot.v_addr;
 127         len = il->ucode_boot.len;
 128         ret = il4965_verify_inst_sparse(il, image, len);
 129         if (!ret) {
 130                 D_INFO("Bootstrap uCode is good in inst SRAM\n");
 131                 return 0;
 132         }
 133
 134         /* Try initialize */
 135         image = (__le32 *) il->ucode_init.v_addr;
 136         len = il->ucode_init.len;
 137         ret = il4965_verify_inst_sparse(il, image, len);
 138         if (!ret) {
 139                 D_INFO("Initialize uCode is good in inst SRAM\n");
 140                 return 0;
 141         }
 142
 143         /* Try runtime/protocol */
 144         image = (__le32 *) il->ucode_code.v_addr;
 145         len = il->ucode_code.len;
 146         ret = il4965_verify_inst_sparse(il, image, len);
 147         if (!ret) {
 148                 D_INFO("Runtime uCode is good in inst SRAM\n");
 149                 return 0;
 150         }
 151
 152         IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
 153
 154         /* Since nothing seems to match, show first several data entries in
 155          * instruction SRAM, so maybe visual inspection will give a clue.
 156          * Selection of bootstrap image (vs. other images) is arbitrary. */
 157         image = (__le32 *) il->ucode_boot.v_addr;
 158         len = il->ucode_boot.len;
 159         ret = il4965_verify_inst_full(il, image, len);
 160
 161         return ret;
 162 }
 163
 164 /******************************************************************************
 165  *
 166  * EEPROM related functions
 167  *
 168 ******************************************************************************/
 169
 170 /*
 171  * The device's EEPROM semaphore prevents conflicts between driver and uCode
 172  * when accessing the EEPROM; each access is a series of pulses to/from the
 173  * EEPROM chip, not a single event, so even reads could conflict if they
 174  * weren't arbitrated by the semaphore.
 175  */
 176 int
 177 il4965_eeprom_acquire_semaphore(struct il_priv *il)
 178 {
 179         u16 count;
 180         int ret;
 181
 182         for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
 183                 /* Request semaphore */
 184                 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 185                            CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 186
 187                 /* See if we got it */
 188                 ret =
 189                     _il_poll_bit(il, CSR_HW_IF_CONFIG_REG,
 190                                  CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 191                                  CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 192                                  EEPROM_SEM_TIMEOUT);
 193                 if (ret >= 0)
 194                         return ret;
 195         }
 196
 197         return ret;
 198 }
 199
 200 void
 201 il4965_eeprom_release_semaphore(struct il_priv *il)
 202 {
 203         il_clear_bit(il, CSR_HW_IF_CONFIG_REG,
 204                      CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 205
 206 }
 207
 208 int
 209 il4965_eeprom_check_version(struct il_priv *il)
 210 {
 211         u16 eeprom_ver;
 212         u16 calib_ver;
 213
 214         eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
 215         calib_ver = il_eeprom_query16(il, EEPROM_4965_CALIB_VERSION_OFFSET);
 216
 217         if (eeprom_ver < il->cfg->eeprom_ver ||
 218             calib_ver < il->cfg->eeprom_calib_ver)
 219                 goto err;
 220
 221         IL_INFO("device EEPROM VER=0x%x, CALIB=0x%x\n", eeprom_ver, calib_ver);
 222
 223         return 0;
 224 err:
 225         IL_ERR("Unsupported (too old) EEPROM VER=0x%x < 0x%x "
 226                "CALIB=0x%x < 0x%x\n", eeprom_ver, il->cfg->eeprom_ver,
 227                calib_ver, il->cfg->eeprom_calib_ver);
 228         return -EINVAL;
 229
 230 }
 231
 232 void
 233 il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac)
 234 {
 235         const u8 *addr = il_eeprom_query_addr(il,
 236                                               EEPROM_MAC_ADDRESS);
 237         memcpy(mac, addr, ETH_ALEN);
 238 }
 239
 240 /* Send led command */
 241 static int
 242 il4965_send_led_cmd(struct il_priv *il, struct il_led_cmd *led_cmd)
 243 {
 244         struct il_host_cmd cmd = {
 245                 .id = C_LEDS,
 246                 .len = sizeof(struct il_led_cmd),
 247                 .data = led_cmd,
 248                 .flags = CMD_ASYNC,
 249                 .callback = NULL,
 250         };
 251         u32 reg;
 252
 253         reg = _il_rd(il, CSR_LED_REG);
 254         if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
 255                 _il_wr(il, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK);
 256
 257         return il_send_cmd(il, &cmd);
 258 }
 259
 260 /* Set led register off */
 261 void
 262 il4965_led_enable(struct il_priv *il)
 263 {
 264         _il_wr(il, CSR_LED_REG, CSR_LED_REG_TRUN_ON);
 265 }
 266
 267 const struct il_led_ops il4965_led_ops = {
 268         .cmd = il4965_send_led_cmd,
 269 };
 270
 271 static int il4965_send_tx_power(struct il_priv *il);
 272 static int il4965_hw_get_temperature(struct il_priv *il);
 273
 274 /* Highest firmware API version supported */
 275 #define IL4965_UCODE_API_MAX 2
 276
 277 /* Lowest firmware API version supported */
 278 #define IL4965_UCODE_API_MIN 2
 279
 280 #define IL4965_FW_PRE "iwlwifi-4965-"
 281 #define _IL4965_MODULE_FIRMWARE(api) IL4965_FW_PRE #api ".ucode"
 282 #define IL4965_MODULE_FIRMWARE(api) _IL4965_MODULE_FIRMWARE(api)
 283
 284 /* check contents of special bootstrap uCode SRAM */
 285 static int
 286 il4965_verify_bsm(struct il_priv *il)
 287 {
 288         __le32 *image = il->ucode_boot.v_addr;
 289         u32 len = il->ucode_boot.len;
 290         u32 reg;
 291         u32 val;
 292
 293         D_INFO("Begin verify bsm\n");
 294
 295         /* verify BSM SRAM contents */
 296         val = il_rd_prph(il, BSM_WR_DWCOUNT_REG);
 297         for (reg = BSM_SRAM_LOWER_BOUND; reg < BSM_SRAM_LOWER_BOUND + len;
 298              reg += sizeof(u32), image++) {
 299                 val = il_rd_prph(il, reg);
 300                 if (val != le32_to_cpu(*image)) {
 301                         IL_ERR("BSM uCode verification failed at "
 302                                "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
 303                                BSM_SRAM_LOWER_BOUND, reg - BSM_SRAM_LOWER_BOUND,
 304                                len, val, le32_to_cpu(*image));
 305                         return -EIO;
 306                 }
 307         }
 308
 309         D_INFO("BSM bootstrap uCode image OK\n");
 310
 311         return 0;
 312 }
 313
 314 /**
 315  * il4965_load_bsm - Load bootstrap instructions
 316  *
 317  * BSM operation:
 318  *
 319  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 320  * in special SRAM that does not power down during RFKILL.  When powering back
 321  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 322  * the bootstrap program into the on-board processor, and starts it.
 323  *
 324  * The bootstrap program loads (via DMA) instructions and data for a new
 325  * program from host DRAM locations indicated by the host driver in the
 326  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 327  * automatically.
 328  *
 329  * When initializing the NIC, the host driver points the BSM to the
 330  * "initialize" uCode image.  This uCode sets up some internal data, then
 331  * notifies host via "initialize alive" that it is complete.
 332  *
 333  * The host then replaces the BSM_DRAM_* pointer values to point to the
 334  * normal runtime uCode instructions and a backup uCode data cache buffer
 335  * (filled initially with starting data values for the on-board processor),
 336  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 337  * which begins normal operation.
 338  *
 339  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 340  * the backup data cache in DRAM before SRAM is powered down.
 341  *
 342  * When powering back up, the BSM loads the bootstrap program.  This reloads
 343  * the runtime uCode instructions and the backup data cache into SRAM,
 344  * and re-launches the runtime uCode from where it left off.
 345  */
 346 static int
 347 il4965_load_bsm(struct il_priv *il)
 348 {
 349         __le32 *image = il->ucode_boot.v_addr;
 350         u32 len = il->ucode_boot.len;
 351         dma_addr_t pinst;
 352         dma_addr_t pdata;
 353         u32 inst_len;
 354         u32 data_len;
 355         int i;
 356         u32 done;
 357         u32 reg_offset;
 358         int ret;
 359
 360         D_INFO("Begin load bsm\n");
 361
 362         il->ucode_type = UCODE_RT;
 363
 364         /* make sure bootstrap program is no larger than BSM's SRAM size */
 365         if (len > IL49_MAX_BSM_SIZE)
 366                 return -EINVAL;
 367
 368         /* Tell bootstrap uCode where to find the "Initialize" uCode
 369          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 370          * NOTE:  il_init_alive_start() will replace these values,
 371          *        after the "initialize" uCode has run, to point to
 372          *        runtime/protocol instructions and backup data cache.
 373          */
 374         pinst = il->ucode_init.p_addr >> 4;
 375         pdata = il->ucode_init_data.p_addr >> 4;
 376         inst_len = il->ucode_init.len;
 377         data_len = il->ucode_init_data.len;
 378
 379         il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
 380         il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
 381         il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 382         il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 383
 384         /* Fill BSM memory with bootstrap instructions */
 385         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 386              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 387              reg_offset += sizeof(u32), image++)
 388                 _il_wr_prph(il, reg_offset, le32_to_cpu(*image));
 389
 390         ret = il4965_verify_bsm(il);
 391         if (ret)
 392                 return ret;
 393
 394         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 395         il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0);
 396         il_wr_prph(il, BSM_WR_MEM_DST_REG, IL49_RTC_INST_LOWER_BOUND);
 397         il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 398
 399         /* Load bootstrap code into instruction SRAM now,
 400          *   to prepare to load "initialize" uCode */
 401         il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 402
 403         /* Wait for load of bootstrap uCode to finish */
 404         for (i = 0; i < 100; i++) {
 405                 done = il_rd_prph(il, BSM_WR_CTRL_REG);
 406                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 407                         break;
 408                 udelay(10);
 409         }
 410         if (i < 100)
 411                 D_INFO("BSM write complete, poll %d iterations\n", i);
 412         else {
 413                 IL_ERR("BSM write did not complete!\n");
 414                 return -EIO;
 415         }
 416
 417         /* Enable future boot loads whenever power management unit triggers it
 418          *   (e.g. when powering back up after power-save shutdown) */
 419         il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 420
 421         return 0;
 422 }
 423
 424 /**
 425  * il4965_set_ucode_ptrs - Set uCode address location
 426  *
 427  * Tell initialization uCode where to find runtime uCode.
 428  *
 429  * BSM registers initially contain pointers to initialization uCode.
 430  * We need to replace them to load runtime uCode inst and data,
 431  * and to save runtime data when powering down.
 432  */
 433 static int
 434 il4965_set_ucode_ptrs(struct il_priv *il)
 435 {
 436         dma_addr_t pinst;
 437         dma_addr_t pdata;
 438         int ret = 0;
 439
 440         /* bits 35:4 for 4965 */
 441         pinst = il->ucode_code.p_addr >> 4;
 442         pdata = il->ucode_data_backup.p_addr >> 4;
 443
 444         /* Tell bootstrap uCode where to find image to load */
 445         il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
 446         il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
 447         il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len);
 448
 449         /* Inst byte count must be last to set up, bit 31 signals uCode
 450          *   that all new ptr/size info is in place */
 451         il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG,
 452                    il->ucode_code.len | BSM_DRAM_INST_LOAD);
 453         D_INFO("Runtime uCode pointers are set.\n");
 454
 455         return ret;
 456 }
 457
 458 /**
 459  * il4965_init_alive_start - Called after N_ALIVE notification received
 460  *
 461  * Called after N_ALIVE notification received from "initialize" uCode.
 462  *
 463  * The 4965 "initialize" ALIVE reply contains calibration data for:
 464  *   Voltage, temperature, and MIMO tx gain correction, now stored in il
 465  *   (3945 does not contain this data).
 466  *
 467  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 468 */
 469 static void
 470 il4965_init_alive_start(struct il_priv *il)
 471 {
 472         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 473          * This is a paranoid check, because we would not have gotten the
 474          * "initialize" alive if code weren't properly loaded.  */
 475         if (il4965_verify_ucode(il)) {
 476                 /* Runtime instruction load was bad;
 477                  * take it all the way back down so we can try again */
 478                 D_INFO("Bad \"initialize\" uCode load.\n");
 479                 goto restart;
 480         }
 481
 482         /* Calculate temperature */
 483         il->temperature = il4965_hw_get_temperature(il);
 484
 485         /* Send pointers to protocol/runtime uCode image ... init code will
 486          * load and launch runtime uCode, which will send us another "Alive"
 487          * notification. */
 488         D_INFO("Initialization Alive received.\n");
 489         if (il4965_set_ucode_ptrs(il)) {
 490                 /* Runtime instruction load won't happen;
 491                  * take it all the way back down so we can try again */
 492                 D_INFO("Couldn't set up uCode pointers.\n");
 493                 goto restart;
 494         }
 495         return;
 496
 497 restart:
 498         queue_work(il->workqueue, &il->restart);
 499 }
 500
 501 static bool
 502 iw4965_is_ht40_channel(__le32 rxon_flags)
 503 {
 504         int chan_mod =
 505             le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) >>
 506             RXON_FLG_CHANNEL_MODE_POS;
 507         return (chan_mod == CHANNEL_MODE_PURE_40 ||
 508                 chan_mod == CHANNEL_MODE_MIXED);
 509 }
 510
 511 void
 512 il4965_nic_config(struct il_priv *il)
 513 {
 514         unsigned long flags;
 515         u16 radio_cfg;
 516
 517         spin_lock_irqsave(&il->lock, flags);
 518
 519         radio_cfg = il_eeprom_query16(il, EEPROM_RADIO_CONFIG);
 520
 521         /* write radio config values to register */
 522         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 523                 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 524                            EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 525                            EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 526                            EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 527
 528         /* set CSR_HW_CONFIG_REG for uCode use */
 529         il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 530                    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 531                    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 532
 533         il->calib_info =
 534             (struct il_eeprom_calib_info *)
 535             il_eeprom_query_addr(il, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 536
 537         spin_unlock_irqrestore(&il->lock, flags);
 538 }
 539
 540 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 541  * Called after every association, but this runs only once!
 542  *  ... once chain noise is calibrated the first time, it's good forever.  */
 543 static void
 544 il4965_chain_noise_reset(struct il_priv *il)
 545 {
 546         struct il_chain_noise_data *data = &(il->chain_noise_data);
 547
 548         if (data->state == IL_CHAIN_NOISE_ALIVE && il_is_any_associated(il)) {
 549                 struct il_calib_diff_gain_cmd cmd;
 550
 551                 /* clear data for chain noise calibration algorithm */
 552                 data->chain_noise_a = 0;
 553                 data->chain_noise_b = 0;
 554                 data->chain_noise_c = 0;
 555                 data->chain_signal_a = 0;
 556                 data->chain_signal_b = 0;
 557                 data->chain_signal_c = 0;
 558                 data->beacon_count = 0;
 559
 560                 memset(&cmd, 0, sizeof(cmd));
 561                 cmd.hdr.op_code = IL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 562                 cmd.diff_gain_a = 0;
 563                 cmd.diff_gain_b = 0;
 564                 cmd.diff_gain_c = 0;
 565                 if (il_send_cmd_pdu(il, C_PHY_CALIBRATION, sizeof(cmd), &cmd))
 566                         IL_ERR("Could not send C_PHY_CALIBRATION\n");
 567                 data->state = IL_CHAIN_NOISE_ACCUMULATE;
 568                 D_CALIB("Run chain_noise_calibrate\n");
 569         }
 570 }
 571
 572 static s32
 573 il4965_math_div_round(s32 num, s32 denom, s32 * res)
 574 {
 575         s32 sign = 1;
 576
 577         if (num < 0) {
 578                 sign = -sign;
 579                 num = -num;
 580         }
 581         if (denom < 0) {
 582                 sign = -sign;
 583                 denom = -denom;
 584         }
 585         *res = 1;
 586         *res = ((num * 2 + denom) / (denom * 2)) * sign;
 587
 588         return 1;
 589 }
 590
 591 /**
 592  * il4965_get_voltage_compensation - Power supply voltage comp for txpower
 593  *
 594  * Determines power supply voltage compensation for txpower calculations.
 595  * Returns number of 1/2-dB steps to subtract from gain table idx,
 596  * to compensate for difference between power supply voltage during
 597  * factory measurements, vs. current power supply voltage.
 598  *
 599  * Voltage indication is higher for lower voltage.
 600  * Lower voltage requires more gain (lower gain table idx).
 601  */
 602 static s32
 603 il4965_get_voltage_compensation(s32 eeprom_voltage, s32 current_voltage)
 604 {
 605         s32 comp = 0;
 606
 607         if (TX_POWER_IL_ILLEGAL_VOLTAGE == eeprom_voltage ||
 608             TX_POWER_IL_ILLEGAL_VOLTAGE == current_voltage)
 609                 return 0;
 610
 611         il4965_math_div_round(current_voltage - eeprom_voltage,
 612                               TX_POWER_IL_VOLTAGE_CODES_PER_03V, &comp);
 613
 614         if (current_voltage > eeprom_voltage)
 615                 comp *= 2;
 616         if ((comp < -2) || (comp > 2))
 617                 comp = 0;
 618
 619         return comp;
 620 }
 621
 622 static s32
 623 il4965_get_tx_atten_grp(u16 channel)
 624 {
 625         if (channel >= CALIB_IL_TX_ATTEN_GR5_FCH &&
 626             channel <= CALIB_IL_TX_ATTEN_GR5_LCH)
 627                 return CALIB_CH_GROUP_5;
 628
 629         if (channel >= CALIB_IL_TX_ATTEN_GR1_FCH &&
 630             channel <= CALIB_IL_TX_ATTEN_GR1_LCH)
 631                 return CALIB_CH_GROUP_1;
 632
 633         if (channel >= CALIB_IL_TX_ATTEN_GR2_FCH &&
 634             channel <= CALIB_IL_TX_ATTEN_GR2_LCH)
 635                 return CALIB_CH_GROUP_2;
 636
 637         if (channel >= CALIB_IL_TX_ATTEN_GR3_FCH &&
 638             channel <= CALIB_IL_TX_ATTEN_GR3_LCH)
 639                 return CALIB_CH_GROUP_3;
 640
 641         if (channel >= CALIB_IL_TX_ATTEN_GR4_FCH &&
 642             channel <= CALIB_IL_TX_ATTEN_GR4_LCH)
 643                 return CALIB_CH_GROUP_4;
 644
 645         return -EINVAL;
 646 }
 647
 648 static u32
 649 il4965_get_sub_band(const struct il_priv *il, u32 channel)
 650 {
 651         s32 b = -1;
 652
 653         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
 654                 if (il->calib_info->band_info[b].ch_from == 0)
 655                         continue;
 656
 657                 if (channel >= il->calib_info->band_info[b].ch_from &&
 658                     channel <= il->calib_info->band_info[b].ch_to)
 659                         break;
 660         }
 661
 662         return b;
 663 }
 664
 665 static s32
 666 il4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
 667 {
 668         s32 val;
 669
 670         if (x2 == x1)
 671                 return y1;
 672         else {
 673                 il4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
 674                 return val + y2;
 675         }
 676 }
 677
 678 /**
 679  * il4965_interpolate_chan - Interpolate factory measurements for one channel
 680  *
 681  * Interpolates factory measurements from the two sample channels within a
 682  * sub-band, to apply to channel of interest.  Interpolation is proportional to
 683  * differences in channel frequencies, which is proportional to differences
 684  * in channel number.
 685  */
 686 static int
 687 il4965_interpolate_chan(struct il_priv *il, u32 channel,
 688                         struct il_eeprom_calib_ch_info *chan_info)
 689 {
 690         s32 s = -1;
 691         u32 c;
 692         u32 m;
 693         const struct il_eeprom_calib_measure *m1;
 694         const struct il_eeprom_calib_measure *m2;
 695         struct il_eeprom_calib_measure *omeas;
 696         u32 ch_i1;
 697         u32 ch_i2;
 698
 699         s = il4965_get_sub_band(il, channel);
 700         if (s >= EEPROM_TX_POWER_BANDS) {
 701                 IL_ERR("Tx Power can not find channel %d\n", channel);
 702                 return -1;
 703         }
 704
 705         ch_i1 = il->calib_info->band_info[s].ch1.ch_num;
 706         ch_i2 = il->calib_info->band_info[s].ch2.ch_num;
 707         chan_info->ch_num = (u8) channel;
 708
 709         D_TXPOWER("channel %d subband %d factory cal ch %d & %d\n", channel, s,
 710                   ch_i1, ch_i2);
 711
 712         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
 713                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
 714                         m1 = &(il->calib_info->band_info[s].ch1.
 715                                measurements[c][m]);
 716                         m2 = &(il->calib_info->band_info[s].ch2.
 717                                measurements[c][m]);
 718                         omeas = &(chan_info->measurements[c][m]);
 719
 720                         omeas->actual_pow =
 721                             (u8) il4965_interpolate_value(channel, ch_i1,
 722                                                           m1->actual_pow, ch_i2,
 723                                                           m2->actual_pow);
 724                         omeas->gain_idx =
 725                             (u8) il4965_interpolate_value(channel, ch_i1,
 726                                                           m1->gain_idx, ch_i2,
 727                                                           m2->gain_idx);
 728                         omeas->temperature =
 729                             (u8) il4965_interpolate_value(channel, ch_i1,
 730                                                           m1->temperature,
 731                                                           ch_i2,
 732                                                           m2->temperature);
 733                         omeas->pa_det =
 734                             (s8) il4965_interpolate_value(channel, ch_i1,
 735                                                           m1->pa_det, ch_i2,
 736                                                           m2->pa_det);
 737
 738                         D_TXPOWER("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c,
 739                                   m, m1->actual_pow, m2->actual_pow,
 740                                   omeas->actual_pow);
 741                         D_TXPOWER("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c,
 742                                   m, m1->gain_idx, m2->gain_idx,
 743                                   omeas->gain_idx);
 744                         D_TXPOWER("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c,
 745                                   m, m1->pa_det, m2->pa_det, omeas->pa_det);
 746                         D_TXPOWER("chain %d meas %d  T1=%d  T2=%d  T=%d\n", c,
 747                                   m, m1->temperature, m2->temperature,
 748                                   omeas->temperature);
 749                 }
 750         }
 751
 752         return 0;
 753 }
 754
 755 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
 756  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
 757 static s32 back_off_table[] = {
 758         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
 759         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
 760         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
 761         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
 762         10                      /* CCK */
 763 };
 764
 765 /* Thermal compensation values for txpower for various frequency ranges ...
 766  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
 767 static struct il4965_txpower_comp_entry {
 768         s32 degrees_per_05db_a;
 769         s32 degrees_per_05db_a_denom;
 770 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
 771         {
 772         9, 2},                  /* group 0 5.2, ch  34-43 */
 773         {
 774         4, 1},                  /* group 1 5.2, ch  44-70 */
 775         {
 776         4, 1},                  /* group 2 5.2, ch  71-124 */
 777         {
 778         4, 1},                  /* group 3 5.2, ch 125-200 */
 779         {
 780         3, 1}                   /* group 4 2.4, ch   all */
 781 };
 782
 783 static s32
 784 get_min_power_idx(s32 rate_power_idx, u32 band)
 785 {
 786         if (!band) {
 787                 if ((rate_power_idx & 7) <= 4)
 788                         return MIN_TX_GAIN_IDX_52GHZ_EXT;
 789         }
 790         return MIN_TX_GAIN_IDX;
 791 }
 792
 793 struct gain_entry {
 794         u8 dsp;
 795         u8 radio;
 796 };
 797
 798 static const struct gain_entry gain_table[2][108] = {
 799         /* 5.2GHz power gain idx table */
 800         {
 801          {123, 0x3F},           /* highest txpower */
 802          {117, 0x3F},
 803          {110, 0x3F},
 804          {104, 0x3F},
 805          {98, 0x3F},
 806          {110, 0x3E},
 807          {104, 0x3E},
 808          {98, 0x3E},
 809          {110, 0x3D},
 810          {104, 0x3D},
 811          {98, 0x3D},
 812          {110, 0x3C},
 813          {104, 0x3C},
 814          {98, 0x3C},
 815          {110, 0x3B},
 816          {104, 0x3B},
 817          {98, 0x3B},
 818          {110, 0x3A},
 819          {104, 0x3A},
 820          {98, 0x3A},
 821          {110, 0x39},
 822          {104, 0x39},
 823          {98, 0x39},
 824          {110, 0x38},
 825          {104, 0x38},
 826          {98, 0x38},
 827          {110, 0x37},
 828          {104, 0x37},
 829          {98, 0x37},
 830          {110, 0x36},
 831          {104, 0x36},
 832          {98, 0x36},
 833          {110, 0x35},
 834          {104, 0x35},
 835          {98, 0x35},
 836          {110, 0x34},
 837          {104, 0x34},
 838          {98, 0x34},
 839          {110, 0x33},
 840          {104, 0x33},
 841          {98, 0x33},
 842          {110, 0x32},
 843          {104, 0x32},
 844          {98, 0x32},
 845          {110, 0x31},
 846          {104, 0x31},
 847          {98, 0x31},
 848          {110, 0x30},
 849          {104, 0x30},
 850          {98, 0x30},
 851          {110, 0x25},
 852          {104, 0x25},
 853          {98, 0x25},
 854          {110, 0x24},
 855          {104, 0x24},
 856          {98, 0x24},
 857          {110, 0x23},
 858          {104, 0x23},
 859          {98, 0x23},
 860          {110, 0x22},
 861          {104, 0x18},
 862          {98, 0x18},
 863          {110, 0x17},
 864          {104, 0x17},
 865          {98, 0x17},
 866          {110, 0x16},
 867          {104, 0x16},
 868          {98, 0x16},
 869          {110, 0x15},
 870          {104, 0x15},
 871          {98, 0x15},
 872          {110, 0x14},
 873          {104, 0x14},
 874          {98, 0x14},
 875          {110, 0x13},
 876          {104, 0x13},
 877          {98, 0x13},
 878          {110, 0x12},
 879          {104, 0x08},
 880          {98, 0x08},
 881          {110, 0x07},
 882          {104, 0x07},
 883          {98, 0x07},
 884          {110, 0x06},
 885          {104, 0x06},
 886          {98, 0x06},
 887          {110, 0x05},
 888          {104, 0x05},
 889          {98, 0x05},
 890          {110, 0x04},
 891          {104, 0x04},
 892          {98, 0x04},
 893          {110, 0x03},
 894          {104, 0x03},
 895          {98, 0x03},
 896          {110, 0x02},
 897          {104, 0x02},
 898          {98, 0x02},
 899          {110, 0x01},
 900          {104, 0x01},
 901          {98, 0x01},
 902          {110, 0x00},
 903          {104, 0x00},
 904          {98, 0x00},
 905          {93, 0x00},
 906          {88, 0x00},
 907          {83, 0x00},
 908          {78, 0x00},
 909          },
 910         /* 2.4GHz power gain idx table */
 911         {
 912          {110, 0x3f},           /* highest txpower */
 913          {104, 0x3f},
 914          {98, 0x3f},
 915          {110, 0x3e},
 916          {104, 0x3e},
 917          {98, 0x3e},
 918          {110, 0x3d},
 919          {104, 0x3d},
 920          {98, 0x3d},
 921          {110, 0x3c},
 922          {104, 0x3c},
 923          {98, 0x3c},
 924          {110, 0x3b},
 925          {104, 0x3b},
 926          {98, 0x3b},
 927          {110, 0x3a},
 928          {104, 0x3a},
 929          {98, 0x3a},
 930          {110, 0x39},
 931          {104, 0x39},
 932          {98, 0x39},
 933          {110, 0x38},
 934          {104, 0x38},
 935          {98, 0x38},
 936          {110, 0x37},
 937          {104, 0x37},
 938          {98, 0x37},
 939          {110, 0x36},
 940          {104, 0x36},
 941          {98, 0x36},
 942          {110, 0x35},
 943          {104, 0x35},
 944          {98, 0x35},
 945          {110, 0x34},
 946          {104, 0x34},
 947          {98, 0x34},
 948          {110, 0x33},
 949          {104, 0x33},
 950          {98, 0x33},
 951          {110, 0x32},
 952          {104, 0x32},
 953          {98, 0x32},
 954          {110, 0x31},
 955          {104, 0x31},
 956          {98, 0x31},
 957          {110, 0x30},
 958          {104, 0x30},
 959          {98, 0x30},
 960          {110, 0x6},
 961          {104, 0x6},
 962          {98, 0x6},
 963          {110, 0x5},
 964          {104, 0x5},
 965          {98, 0x5},
 966          {110, 0x4},
 967          {104, 0x4},
 968          {98, 0x4},
 969          {110, 0x3},
 970          {104, 0x3},
 971          {98, 0x3},
 972          {110, 0x2},
 973          {104, 0x2},
 974          {98, 0x2},
 975          {110, 0x1},
 976          {104, 0x1},
 977          {98, 0x1},
 978          {110, 0x0},
 979          {104, 0x0},
 980          {98, 0x0},
 981          {97, 0},
 982          {96, 0},
 983          {95, 0},
 984          {94, 0},
 985          {93, 0},
 986          {92, 0},
 987          {91, 0},
 988          {90, 0},
 989          {89, 0},
 990          {88, 0},
 991          {87, 0},
 992          {86, 0},
 993          {85, 0},
 994          {84, 0},
 995          {83, 0},
 996          {82, 0},
 997          {81, 0},
 998          {80, 0},
 999          {79, 0},
1000          {78, 0},
1001          {77, 0},
1002          {76, 0},
1003          {75, 0},
1004          {74, 0},
1005          {73, 0},
1006          {72, 0},
1007          {71, 0},
1008          {70, 0},
1009          {69, 0},
1010          {68, 0},
1011          {67, 0},
1012          {66, 0},
1013          {65, 0},
1014          {64, 0},
1015          {63, 0},
1016          {62, 0},
1017          {61, 0},
1018          {60, 0},
1019          {59, 0},
1020          }
1021 };
1022
1023 static int
1024 il4965_fill_txpower_tbl(struct il_priv *il, u8 band, u16 channel, u8 is_ht40,
1025                         u8 ctrl_chan_high,
1026                         struct il4965_tx_power_db *tx_power_tbl)
1027 {
1028         u8 saturation_power;
1029         s32 target_power;
1030         s32 user_target_power;
1031         s32 power_limit;
1032         s32 current_temp;
1033         s32 reg_limit;
1034         s32 current_regulatory;
1035         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1036         int i;
1037         int c;
1038         const struct il_channel_info *ch_info = NULL;
1039         struct il_eeprom_calib_ch_info ch_eeprom_info;
1040         const struct il_eeprom_calib_measure *measurement;
1041         s16 voltage;
1042         s32 init_voltage;
1043         s32 voltage_compensation;
1044         s32 degrees_per_05db_num;
1045         s32 degrees_per_05db_denom;
1046         s32 factory_temp;
1047         s32 temperature_comp[2];
1048         s32 factory_gain_idx[2];
1049         s32 factory_actual_pwr[2];
1050         s32 power_idx;
1051
1052         /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1053          *   are used for idxing into txpower table) */
1054         user_target_power = 2 * il->tx_power_user_lmt;
1055
1056         /* Get current (RXON) channel, band, width */
1057         D_TXPOWER("chan %d band %d is_ht40 %d\n", channel, band, is_ht40);
1058
1059         ch_info = il_get_channel_info(il, il->band, channel);
1060
1061         if (!il_is_channel_valid(ch_info))
1062                 return -EINVAL;
1063
1064         /* get txatten group, used to select 1) thermal txpower adjustment
1065          *   and 2) mimo txpower balance between Tx chains. */
1066         txatten_grp = il4965_get_tx_atten_grp(channel);
1067         if (txatten_grp < 0) {
1068                 IL_ERR("Can't find txatten group for channel %d.\n", channel);
1069                 return txatten_grp;
1070         }
1071
1072         D_TXPOWER("channel %d belongs to txatten group %d\n", channel,
1073                   txatten_grp);
1074
1075         if (is_ht40) {
1076                 if (ctrl_chan_high)
1077                         channel -= 2;
1078                 else
1079                         channel += 2;
1080         }
1081
1082         /* hardware txpower limits ...
1083          * saturation (clipping distortion) txpowers are in half-dBm */
1084         if (band)
1085                 saturation_power = il->calib_info->saturation_power24;
1086         else
1087                 saturation_power = il->calib_info->saturation_power52;
1088
1089         if (saturation_power < IL_TX_POWER_SATURATION_MIN ||
1090             saturation_power > IL_TX_POWER_SATURATION_MAX) {
1091                 if (band)
1092                         saturation_power = IL_TX_POWER_DEFAULT_SATURATION_24;
1093                 else
1094                         saturation_power = IL_TX_POWER_DEFAULT_SATURATION_52;
1095         }
1096
1097         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1098          *   max_power_avg values are in dBm, convert * 2 */
1099         if (is_ht40)
1100                 reg_limit = ch_info->ht40_max_power_avg * 2;
1101         else
1102                 reg_limit = ch_info->max_power_avg * 2;
1103
1104         if ((reg_limit < IL_TX_POWER_REGULATORY_MIN) ||
1105             (reg_limit > IL_TX_POWER_REGULATORY_MAX)) {
1106                 if (band)
1107                         reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_24;
1108                 else
1109                         reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_52;
1110         }
1111
1112         /* Interpolate txpower calibration values for this channel,
1113          *   based on factory calibration tests on spaced channels. */
1114         il4965_interpolate_chan(il, channel, &ch_eeprom_info);
1115
1116         /* calculate tx gain adjustment based on power supply voltage */
1117         voltage = le16_to_cpu(il->calib_info->voltage);
1118         init_voltage = (s32) le32_to_cpu(il->card_alive_init.voltage);
1119         voltage_compensation =
1120             il4965_get_voltage_compensation(voltage, init_voltage);
1121
1122         D_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n", init_voltage,
1123                   voltage, voltage_compensation);
1124
1125         /* get current temperature (Celsius) */
1126         current_temp = max(il->temperature, IL_TX_POWER_TEMPERATURE_MIN);
1127         current_temp = min(il->temperature, IL_TX_POWER_TEMPERATURE_MAX);
1128         current_temp = KELVIN_TO_CELSIUS(current_temp);
1129
1130         /* select thermal txpower adjustment params, based on channel group
1131          *   (same frequency group used for mimo txatten adjustment) */
1132         degrees_per_05db_num =
1133             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1134         degrees_per_05db_denom =
1135             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1136
1137         /* get per-chain txpower values from factory measurements */
1138         for (c = 0; c < 2; c++) {
1139                 measurement = &ch_eeprom_info.measurements[c][1];
1140
1141                 /* txgain adjustment (in half-dB steps) based on difference
1142                  *   between factory and current temperature */
1143                 factory_temp = measurement->temperature;
1144                 il4965_math_div_round((current_temp -
1145                                        factory_temp) * degrees_per_05db_denom,
1146                                       degrees_per_05db_num,
1147                                       &temperature_comp[c]);
1148
1149                 factory_gain_idx[c] = measurement->gain_idx;
1150                 factory_actual_pwr[c] = measurement->actual_pow;
1151
1152                 D_TXPOWER("chain = %d\n", c);
1153                 D_TXPOWER("fctry tmp %d, " "curr tmp %d, comp %d steps\n",
1154                           factory_temp, current_temp, temperature_comp[c]);
1155
1156                 D_TXPOWER("fctry idx %d, fctry pwr %d\n", factory_gain_idx[c],
1157                           factory_actual_pwr[c]);
1158         }
1159
1160         /* for each of 33 bit-rates (including 1 for CCK) */
1161         for (i = 0; i < POWER_TBL_NUM_ENTRIES; i++) {
1162                 u8 is_mimo_rate;
1163                 union il4965_tx_power_dual_stream tx_power;
1164
1165                 /* for mimo, reduce each chain's txpower by half
1166                  * (3dB, 6 steps), so total output power is regulatory
1167                  * compliant. */
1168                 if (i & 0x8) {
1169                         current_regulatory =
1170                             reg_limit -
1171                             IL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1172                         is_mimo_rate = 1;
1173                 } else {
1174                         current_regulatory = reg_limit;
1175                         is_mimo_rate = 0;
1176                 }
1177
1178                 /* find txpower limit, either hardware or regulatory */
1179                 power_limit = saturation_power - back_off_table[i];
1180                 if (power_limit > current_regulatory)
1181                         power_limit = current_regulatory;
1182
1183                 /* reduce user's txpower request if necessary
1184                  * for this rate on this channel */
1185                 target_power = user_target_power;
1186                 if (target_power > power_limit)
1187                         target_power = power_limit;
1188
1189                 D_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n", i,
1190                           saturation_power - back_off_table[i],
1191                           current_regulatory, user_target_power, target_power);
1192
1193                 /* for each of 2 Tx chains (radio transmitters) */
1194                 for (c = 0; c < 2; c++) {
1195                         s32 atten_value;
1196
1197                         if (is_mimo_rate)
1198                                 atten_value =
1199                                     (s32) le32_to_cpu(il->card_alive_init.
1200                                                       tx_atten[txatten_grp][c]);
1201                         else
1202                                 atten_value = 0;
1203
1204                         /* calculate idx; higher idx means lower txpower */
1205                         power_idx =
1206                             (u8) (factory_gain_idx[c] -
1207                                   (target_power - factory_actual_pwr[c]) -
1208                                   temperature_comp[c] - voltage_compensation +
1209                                   atten_value);
1210
1211 /*                      D_TXPOWER("calculated txpower idx %d\n",
1212                                                 power_idx); */
1213
1214                         if (power_idx < get_min_power_idx(i, band))
1215                                 power_idx = get_min_power_idx(i, band);
1216
1217                         /* adjust 5 GHz idx to support negative idxes */
1218                         if (!band)
1219                                 power_idx += 9;
1220
1221                         /* CCK, rate 32, reduce txpower for CCK */
1222                         if (i == POWER_TBL_CCK_ENTRY)
1223                                 power_idx +=
1224                                     IL_TX_POWER_CCK_COMPENSATION_C_STEP;
1225
1226                         /* stay within the table! */
1227                         if (power_idx > 107) {
1228                                 IL_WARN("txpower idx %d > 107\n", power_idx);
1229                                 power_idx = 107;
1230                         }
1231                         if (power_idx < 0) {
1232                                 IL_WARN("txpower idx %d < 0\n", power_idx);
1233                                 power_idx = 0;
1234                         }
1235
1236                         /* fill txpower command for this rate/chain */
1237                         tx_power.s.radio_tx_gain[c] =
1238                             gain_table[band][power_idx].radio;
1239                         tx_power.s.dsp_predis_atten[c] =
1240                             gain_table[band][power_idx].dsp;
1241
1242                         D_TXPOWER("chain %d mimo %d idx %d "
1243                                   "gain 0x%02x dsp %d\n", c, atten_value,
1244                                   power_idx, tx_power.s.radio_tx_gain[c],
1245                                   tx_power.s.dsp_predis_atten[c]);
1246                 }               /* for each chain */
1247
1248                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1249
1250         }                       /* for each rate */
1251
1252         return 0;
1253 }
1254
1255 /**
1256  * il4965_send_tx_power - Configure the TXPOWER level user limit
1257  *
1258  * Uses the active RXON for channel, band, and characteristics (ht40, high)
1259  * The power limit is taken from il->tx_power_user_lmt.
1260  */
1261 static int
1262 il4965_send_tx_power(struct il_priv *il)
1263 {
1264         struct il4965_txpowertable_cmd cmd = { 0 };
1265         int ret;
1266         u8 band = 0;
1267         bool is_ht40 = false;
1268         u8 ctrl_chan_high = 0;
1269
1270         if (WARN_ONCE
1271             (test_bit(S_SCAN_HW, &il->status),
1272              "TX Power requested while scanning!\n"))
1273                 return -EAGAIN;
1274
1275         band = il->band == IEEE80211_BAND_2GHZ;
1276
1277         is_ht40 = iw4965_is_ht40_channel(il->active.flags);
1278
1279         if (is_ht40 && (il->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1280                 ctrl_chan_high = 1;
1281
1282         cmd.band = band;
1283         cmd.channel = il->active.channel;
1284
1285         ret =
1286             il4965_fill_txpower_tbl(il, band, le16_to_cpu(il->active.channel),
1287                                     is_ht40, ctrl_chan_high, &cmd.tx_power);
1288         if (ret)
1289                 goto out;
1290
1291         ret = il_send_cmd_pdu(il, C_TX_PWR_TBL, sizeof(cmd), &cmd);
1292
1293 out:
1294         return ret;
1295 }
1296
1297 static int
1298 il4965_send_rxon_assoc(struct il_priv *il)
1299 {
1300         int ret = 0;
1301         struct il4965_rxon_assoc_cmd rxon_assoc;
1302         const struct il_rxon_cmd *rxon1 = &il->staging;
1303         const struct il_rxon_cmd *rxon2 = &il->active;
1304
1305         if (rxon1->flags == rxon2->flags &&
1306             rxon1->filter_flags == rxon2->filter_flags &&
1307             rxon1->cck_basic_rates == rxon2->cck_basic_rates &&
1308             rxon1->ofdm_ht_single_stream_basic_rates ==
1309             rxon2->ofdm_ht_single_stream_basic_rates &&
1310             rxon1->ofdm_ht_dual_stream_basic_rates ==
1311             rxon2->ofdm_ht_dual_stream_basic_rates &&
1312             rxon1->rx_chain == rxon2->rx_chain &&
1313             rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) {
1314                 D_INFO("Using current RXON_ASSOC.  Not resending.\n");
1315                 return 0;
1316         }
1317
1318         rxon_assoc.flags = il->staging.flags;
1319         rxon_assoc.filter_flags = il->staging.filter_flags;
1320         rxon_assoc.ofdm_basic_rates = il->staging.ofdm_basic_rates;
1321         rxon_assoc.cck_basic_rates = il->staging.cck_basic_rates;
1322         rxon_assoc.reserved = 0;
1323         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1324             il->staging.ofdm_ht_single_stream_basic_rates;
1325         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1326             il->staging.ofdm_ht_dual_stream_basic_rates;
1327         rxon_assoc.rx_chain_select_flags = il->staging.rx_chain;
1328
1329         ret =
1330             il_send_cmd_pdu_async(il, C_RXON_ASSOC, sizeof(rxon_assoc),
1331                                   &rxon_assoc, NULL);
1332
1333         return ret;
1334 }
1335
1336 static int
1337 il4965_commit_rxon(struct il_priv *il)
1338 {
1339         /* cast away the const for active_rxon in this function */
1340         struct il_rxon_cmd *active_rxon = (void *)&il->active;
1341         int ret;
1342         bool new_assoc = !!(il->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
1343
1344         if (!il_is_alive(il))
1345                 return -EBUSY;
1346
1347         /* always get timestamp with Rx frame */
1348         il->staging.flags |= RXON_FLG_TSF2HOST_MSK;
1349
1350         ret = il_check_rxon_cmd(il);
1351         if (ret) {
1352                 IL_ERR("Invalid RXON configuration.  Not committing.\n");
1353                 return -EINVAL;
1354         }
1355
1356         /*
1357          * receive commit_rxon request
1358          * abort any previous channel switch if still in process
1359          */
1360         if (test_bit(S_CHANNEL_SWITCH_PENDING, &il->status) &&
1361             il->switch_channel != il->staging.channel) {
1362                 D_11H("abort channel switch on %d\n",
1363                       le16_to_cpu(il->switch_channel));
1364                 il_chswitch_done(il, false);
1365         }
1366
1367         /* If we don't need to send a full RXON, we can use
1368          * il_rxon_assoc_cmd which is used to reconfigure filter
1369          * and other flags for the current radio configuration. */
1370         if (!il_full_rxon_required(il)) {
1371                 ret = il_send_rxon_assoc(il);
1372                 if (ret) {
1373                         IL_ERR("Error setting RXON_ASSOC (%d)\n", ret);
1374                         return ret;
1375                 }
1376
1377                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1378                 il_print_rx_config_cmd(il);
1379                 /*
1380                  * We do not commit tx power settings while channel changing,
1381                  * do it now if tx power changed.
1382                  */
1383                 il_set_tx_power(il, il->tx_power_next, false);
1384                 return 0;
1385         }
1386
1387         /* If we are currently associated and the new config requires
1388          * an RXON_ASSOC and the new config wants the associated mask enabled,
1389          * we must clear the associated from the active configuration
1390          * before we apply the new config */
1391         if (il_is_associated(il) && new_assoc) {
1392                 D_INFO("Toggling associated bit on current RXON\n");
1393                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1394
1395                 ret =
1396                     il_send_cmd_pdu(il, C_RXON,
1397                                     sizeof(struct il_rxon_cmd), active_rxon);
1398
1399                 /* If the mask clearing failed then we set
1400                  * active_rxon back to what it was previously */
1401                 if (ret) {
1402                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1403                         IL_ERR("Error clearing ASSOC_MSK (%d)\n", ret);
1404                         return ret;
1405                 }
1406                 il_clear_ucode_stations(il);
1407                 il_restore_stations(il);
1408                 ret = il4965_restore_default_wep_keys(il);
1409                 if (ret) {
1410                         IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1411                         return ret;
1412                 }
1413         }
1414
1415         D_INFO("Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n"
1416                "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"),
1417                le16_to_cpu(il->staging.channel), il->staging.bssid_addr);
1418
1419         il_set_rxon_hwcrypto(il, !il->cfg->mod_params->sw_crypto);
1420
1421         /* Apply the new configuration
1422          * RXON unassoc clears the station table in uCode so restoration of
1423          * stations is needed after it (the RXON command) completes
1424          */
1425         if (!new_assoc) {
1426                 ret =
1427                     il_send_cmd_pdu(il, C_RXON,
1428                                     sizeof(struct il_rxon_cmd), &il->staging);
1429                 if (ret) {
1430                         IL_ERR("Error setting new RXON (%d)\n", ret);
1431                         return ret;
1432                 }
1433                 D_INFO("Return from !new_assoc RXON.\n");
1434                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1435                 il_clear_ucode_stations(il);
1436                 il_restore_stations(il);
1437                 ret = il4965_restore_default_wep_keys(il);
1438                 if (ret) {
1439                         IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1440                         return ret;
1441                 }
1442         }
1443         if (new_assoc) {
1444                 il->start_calib = 0;
1445                 /* Apply the new configuration
1446                  * RXON assoc doesn't clear the station table in uCode,
1447                  */
1448                 ret =
1449                     il_send_cmd_pdu(il, C_RXON,
1450                                     sizeof(struct il_rxon_cmd), &il->staging);
1451                 if (ret) {
1452                         IL_ERR("Error setting new RXON (%d)\n", ret);
1453                         return ret;
1454                 }
1455                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1456         }
1457         il_print_rx_config_cmd(il);
1458
1459         il4965_init_sensitivity(il);
1460
1461         /* If we issue a new RXON command which required a tune then we must
1462          * send a new TXPOWER command or we won't be able to Tx any frames */
1463         ret = il_set_tx_power(il, il->tx_power_next, true);
1464         if (ret) {
1465                 IL_ERR("Error sending TX power (%d)\n", ret);
1466                 return ret;
1467         }
1468
1469         return 0;
1470 }
1471
1472 static int
1473 il4965_hw_channel_switch(struct il_priv *il,
1474                          struct ieee80211_channel_switch *ch_switch)
1475 {
1476         int rc;
1477         u8 band = 0;
1478         bool is_ht40 = false;
1479         u8 ctrl_chan_high = 0;
1480         struct il4965_channel_switch_cmd cmd;
1481         const struct il_channel_info *ch_info;
1482         u32 switch_time_in_usec, ucode_switch_time;
1483         u16 ch;
1484         u32 tsf_low;
1485         u8 switch_count;
1486         u16 beacon_interval = le16_to_cpu(il->timing.beacon_interval);
1487         struct ieee80211_vif *vif = il->vif;
1488         band = (il->band == IEEE80211_BAND_2GHZ);
1489
1490         if (WARN_ON_ONCE(vif == NULL))
1491                 return -EIO;
1492
1493         is_ht40 = iw4965_is_ht40_channel(il->staging.flags);
1494
1495         if (is_ht40 && (il->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1496                 ctrl_chan_high = 1;
1497
1498         cmd.band = band;
1499         cmd.expect_beacon = 0;
1500         ch = ch_switch->channel->hw_value;
1501         cmd.channel = cpu_to_le16(ch);
1502         cmd.rxon_flags = il->staging.flags;
1503         cmd.rxon_filter_flags = il->staging.filter_flags;
1504         switch_count = ch_switch->count;
1505         tsf_low = ch_switch->timestamp & 0x0ffffffff;
1506         /*
1507          * calculate the ucode channel switch time
1508          * adding TSF as one of the factor for when to switch
1509          */
1510         if (il->ucode_beacon_time > tsf_low && beacon_interval) {
1511                 if (switch_count >
1512                     ((il->ucode_beacon_time - tsf_low) / beacon_interval)) {
1513                         switch_count -=
1514                             (il->ucode_beacon_time - tsf_low) / beacon_interval;
1515                 } else
1516                         switch_count = 0;
1517         }
1518         if (switch_count <= 1)
1519                 cmd.switch_time = cpu_to_le32(il->ucode_beacon_time);
1520         else {
1521                 switch_time_in_usec =
1522                     vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
1523                 ucode_switch_time =
1524                     il_usecs_to_beacons(il, switch_time_in_usec,
1525                                         beacon_interval);
1526                 cmd.switch_time =
1527                     il_add_beacon_time(il, il->ucode_beacon_time,
1528                                        ucode_switch_time, beacon_interval);
1529         }
1530         D_11H("uCode time for the switch is 0x%x\n", cmd.switch_time);
1531         ch_info = il_get_channel_info(il, il->band, ch);
1532         if (ch_info)
1533                 cmd.expect_beacon = il_is_channel_radar(ch_info);
1534         else {
1535                 IL_ERR("invalid channel switch from %u to %u\n",
1536                        il->active.channel, ch);
1537                 return -EFAULT;
1538         }
1539
1540         rc = il4965_fill_txpower_tbl(il, band, ch, is_ht40, ctrl_chan_high,
1541                                      &cmd.tx_power);
1542         if (rc) {
1543                 D_11H("error:%d  fill txpower_tbl\n", rc);
1544                 return rc;
1545         }
1546
1547         return il_send_cmd_pdu(il, C_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1548 }
1549
1550 /**
1551  * il4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1552  */
1553 static void
1554 il4965_txq_update_byte_cnt_tbl(struct il_priv *il, struct il_tx_queue *txq,
1555                                u16 byte_cnt)
1556 {
1557         struct il4965_scd_bc_tbl *scd_bc_tbl = il->scd_bc_tbls.addr;
1558         int txq_id = txq->q.id;
1559         int write_ptr = txq->q.write_ptr;
1560         int len = byte_cnt + IL_TX_CRC_SIZE + IL_TX_DELIMITER_SIZE;
1561         __le16 bc_ent;
1562
1563         WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1564
1565         bc_ent = cpu_to_le16(len & 0xFFF);
1566         /* Set up byte count within first 256 entries */
1567         scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1568
1569         /* If within first 64 entries, duplicate at end */
1570         if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1571                 scd_bc_tbl[txq_id].tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] =
1572                     bc_ent;
1573 }
1574
1575 /**
1576  * il4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1577  * @stats: Provides the temperature reading from the uCode
1578  *
1579  * A return of <0 indicates bogus data in the stats
1580  */
1581 static int
1582 il4965_hw_get_temperature(struct il_priv *il)
1583 {
1584         s32 temperature;
1585         s32 vt;
1586         s32 R1, R2, R3;
1587         u32 R4;
1588
1589         if (test_bit(S_TEMPERATURE, &il->status) &&
1590             (il->_4965.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK)) {
1591                 D_TEMP("Running HT40 temperature calibration\n");
1592                 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[1]);
1593                 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[1]);
1594                 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[1]);
1595                 R4 = le32_to_cpu(il->card_alive_init.therm_r4[1]);
1596         } else {
1597                 D_TEMP("Running temperature calibration\n");
1598                 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[0]);
1599                 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[0]);
1600                 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[0]);
1601                 R4 = le32_to_cpu(il->card_alive_init.therm_r4[0]);
1602         }
1603
1604         /*
1605          * Temperature is only 23 bits, so sign extend out to 32.
1606          *
1607          * NOTE If we haven't received a stats notification yet
1608          * with an updated temperature, use R4 provided to us in the
1609          * "initialize" ALIVE response.
1610          */
1611         if (!test_bit(S_TEMPERATURE, &il->status))
1612                 vt = sign_extend32(R4, 23);
1613         else
1614                 vt = sign_extend32(le32_to_cpu
1615                                    (il->_4965.stats.general.common.temperature),
1616                                    23);
1617
1618         D_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1619
1620         if (R3 == R1) {
1621                 IL_ERR("Calibration conflict R1 == R3\n");
1622                 return -1;
1623         }
1624
1625         /* Calculate temperature in degrees Kelvin, adjust by 97%.
1626          * Add offset to center the adjustment around 0 degrees Centigrade. */
1627         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1628         temperature /= (R3 - R1);
1629         temperature =
1630             (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1631
1632         D_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
1633                KELVIN_TO_CELSIUS(temperature));
1634
1635         return temperature;
1636 }
1637
1638 /* Adjust Txpower only if temperature variance is greater than threshold. */
1639 #define IL_TEMPERATURE_THRESHOLD   3
1640
1641 /**
1642  * il4965_is_temp_calib_needed - determines if new calibration is needed
1643  *
1644  * If the temperature changed has changed sufficiently, then a recalibration
1645  * is needed.
1646  *
1647  * Assumes caller will replace il->last_temperature once calibration
1648  * executed.
1649  */
1650 static int
1651 il4965_is_temp_calib_needed(struct il_priv *il)
1652 {
1653         int temp_diff;
1654
1655         if (!test_bit(S_STATS, &il->status)) {
1656                 D_TEMP("Temperature not updated -- no stats.\n");
1657                 return 0;
1658         }
1659
1660         temp_diff = il->temperature - il->last_temperature;
1661
1662         /* get absolute value */
1663         if (temp_diff < 0) {
1664                 D_POWER("Getting cooler, delta %d\n", temp_diff);
1665                 temp_diff = -temp_diff;
1666         } else if (temp_diff == 0)
1667                 D_POWER("Temperature unchanged\n");
1668         else
1669                 D_POWER("Getting warmer, delta %d\n", temp_diff);
1670
1671         if (temp_diff < IL_TEMPERATURE_THRESHOLD) {
1672                 D_POWER(" => thermal txpower calib not needed\n");
1673                 return 0;
1674         }
1675
1676         D_POWER(" => thermal txpower calib needed\n");
1677
1678         return 1;
1679 }
1680
1681 void
1682 il4965_temperature_calib(struct il_priv *il)
1683 {
1684         s32 temp;
1685
1686         temp = il4965_hw_get_temperature(il);
1687         if (IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(temp))
1688                 return;
1689
1690         if (il->temperature != temp) {
1691                 if (il->temperature)
1692                         D_TEMP("Temperature changed " "from %dC to %dC\n",
1693                                KELVIN_TO_CELSIUS(il->temperature),
1694                                KELVIN_TO_CELSIUS(temp));
1695                 else
1696                         D_TEMP("Temperature " "initialized to %dC\n",
1697                                KELVIN_TO_CELSIUS(temp));
1698         }
1699
1700         il->temperature = temp;
1701         set_bit(S_TEMPERATURE, &il->status);
1702
1703         if (!il->disable_tx_power_cal &&
1704             unlikely(!test_bit(S_SCANNING, &il->status)) &&
1705             il4965_is_temp_calib_needed(il))
1706                 queue_work(il->workqueue, &il->txpower_work);
1707 }
1708
1709 static u16
1710 il4965_get_hcmd_size(u8 cmd_id, u16 len)
1711 {
1712         switch (cmd_id) {
1713         case C_RXON:
1714                 return (u16) sizeof(struct il4965_rxon_cmd);
1715         default:
1716                 return len;
1717         }
1718 }
1719
1720 static u16
1721 il4965_build_addsta_hcmd(const struct il_addsta_cmd *cmd, u8 * data)
1722 {
1723         struct il4965_addsta_cmd *addsta = (struct il4965_addsta_cmd *)data;
1724         addsta->mode = cmd->mode;
1725         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1726         memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo));
1727         addsta->station_flags = cmd->station_flags;
1728         addsta->station_flags_msk = cmd->station_flags_msk;
1729         addsta->tid_disable_tx = cmd->tid_disable_tx;
1730         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1731         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1732         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1733         addsta->sleep_tx_count = cmd->sleep_tx_count;
1734         addsta->reserved1 = cpu_to_le16(0);
1735         addsta->reserved2 = cpu_to_le16(0);
1736
1737         return (u16) sizeof(struct il4965_addsta_cmd);
1738 }
1739
1740 static struct il_hcmd_ops il4965_hcmd = {
1741         .rxon_assoc = il4965_send_rxon_assoc,
1742         .commit_rxon = il4965_commit_rxon,
1743         .set_rxon_chain = il4965_set_rxon_chain,
1744 };
1745
1746 static void
1747 il4965_post_scan(struct il_priv *il)
1748 {
1749         /*
1750          * Since setting the RXON may have been deferred while
1751          * performing the scan, fire one off if needed
1752          */
1753         if (memcmp(&il->staging, &il->active, sizeof(il->staging)))
1754                 il_commit_rxon(il);
1755 }
1756
1757 static void
1758 il4965_post_associate(struct il_priv *il)
1759 {
1760         struct ieee80211_vif *vif = il->vif;
1761         struct ieee80211_conf *conf = NULL;
1762         int ret = 0;
1763
1764         if (!vif || !il->is_open)
1765                 return;
1766
1767         if (test_bit(S_EXIT_PENDING, &il->status))
1768                 return;
1769
1770         il_scan_cancel_timeout(il, 200);
1771
1772         conf = &il->hw->conf;
1773
1774         il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1775         il_commit_rxon(il);
1776
1777         ret = il_send_rxon_timing(il);
1778         if (ret)
1779                 IL_WARN("RXON timing - " "Attempting to continue.\n");
1780
1781         il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1782
1783         il_set_rxon_ht(il, &il->current_ht_config);
1784
1785         if (il->ops->hcmd->set_rxon_chain)
1786                 il->ops->hcmd->set_rxon_chain(il);
1787
1788         il->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
1789
1790         D_ASSOC("assoc id %d beacon interval %d\n", vif->bss_conf.aid,
1791                 vif->bss_conf.beacon_int);
1792
1793         if (vif->bss_conf.use_short_preamble)
1794                 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1795         else
1796                 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1797
1798         if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
1799                 if (vif->bss_conf.use_short_slot)
1800                         il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
1801                 else
1802                         il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1803         }
1804
1805         il_commit_rxon(il);
1806
1807         D_ASSOC("Associated as %d to: %pM\n", vif->bss_conf.aid,
1808                 il->active.bssid_addr);
1809
1810         switch (vif->type) {
1811         case NL80211_IFTYPE_STATION:
1812                 break;
1813         case NL80211_IFTYPE_ADHOC:
1814                 il4965_send_beacon_cmd(il);
1815                 break;
1816         default:
1817                 IL_ERR("%s Should not be called in %d mode\n", __func__,
1818                        vif->type);
1819                 break;
1820         }
1821
1822         /* the chain noise calibration will enabled PM upon completion
1823          * If chain noise has already been run, then we need to enable
1824          * power management here */
1825         if (il->chain_noise_data.state == IL_CHAIN_NOISE_DONE)
1826                 il_power_update_mode(il, false);
1827
1828         /* Enable Rx differential gain and sensitivity calibrations */
1829         il4965_chain_noise_reset(il);
1830         il->start_calib = 1;
1831 }
1832
1833 static void
1834 il4965_config_ap(struct il_priv *il)
1835 {
1836         struct ieee80211_vif *vif = il->vif;
1837         int ret = 0;
1838
1839         lockdep_assert_held(&il->mutex);
1840
1841         if (test_bit(S_EXIT_PENDING, &il->status))
1842                 return;
1843
1844         /* The following should be done only at AP bring up */
1845         if (!il_is_associated(il)) {
1846
1847                 /* RXON - unassoc (to set timing command) */
1848                 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1849                 il_commit_rxon(il);
1850
1851                 /* RXON Timing */
1852                 ret = il_send_rxon_timing(il);
1853                 if (ret)
1854                         IL_WARN("RXON timing failed - "
1855                                 "Attempting to continue.\n");
1856
1857                 /* AP has all antennas */
1858                 il->chain_noise_data.active_chains = il->hw_params.valid_rx_ant;
1859                 il_set_rxon_ht(il, &il->current_ht_config);
1860                 if (il->ops->hcmd->set_rxon_chain)
1861                         il->ops->hcmd->set_rxon_chain(il);
1862
1863                 il->staging.assoc_id = 0;
1864
1865                 if (vif->bss_conf.use_short_preamble)
1866                         il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1867                 else
1868                         il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1869
1870                 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
1871                         if (vif->bss_conf.use_short_slot)
1872                                 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
1873                         else
1874                                 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1875                 }
1876                 /* need to send beacon cmd before committing assoc RXON! */
1877                 il4965_send_beacon_cmd(il);
1878                 /* restore RXON assoc */
1879                 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1880                 il_commit_rxon(il);
1881         }
1882         il4965_send_beacon_cmd(il);
1883 }
1884
1885 static struct il_hcmd_utils_ops il4965_hcmd_utils = {
1886         .get_hcmd_size = il4965_get_hcmd_size,
1887         .build_addsta_hcmd = il4965_build_addsta_hcmd,
1888         .request_scan = il4965_request_scan,
1889         .post_scan = il4965_post_scan,
1890 };
1891
1892 static const struct il_legacy_ops il4965_legacy_ops = {
1893         .post_associate = il4965_post_associate,
1894         .config_ap = il4965_config_ap,
1895         .manage_ibss_station = il4965_manage_ibss_station,
1896         .update_bcast_stations = il4965_update_bcast_stations,
1897 };
1898
1899 const struct il_ops il4965_ops = {
1900         .txq_update_byte_cnt_tbl = il4965_txq_update_byte_cnt_tbl,
1901         .txq_attach_buf_to_tfd = il4965_hw_txq_attach_buf_to_tfd,
1902         .txq_free_tfd = il4965_hw_txq_free_tfd,
1903         .txq_init = il4965_hw_tx_queue_init,
1904         .is_valid_rtc_data_addr = il4965_hw_valid_rtc_data_addr,
1905         .init_alive_start = il4965_init_alive_start,
1906         .load_ucode = il4965_load_bsm,
1907         .dump_nic_error_log = il4965_dump_nic_error_log,
1908         .dump_fh = il4965_dump_fh,
1909         .set_channel_switch = il4965_hw_channel_switch,
1910         .apm_init = il_apm_init,
1911         .send_tx_power = il4965_send_tx_power,
1912         .update_chain_flags = il4965_update_chain_flags,
1913         .eeprom_acquire_semaphore = il4965_eeprom_acquire_semaphore,
1914         .eeprom_release_semaphore = il4965_eeprom_release_semaphore,
1915
1916         .hcmd = &il4965_hcmd,
1917         .utils = &il4965_hcmd_utils,
1918         .led = &il4965_led_ops,
1919         .legacy = &il4965_legacy_ops,
1920 };
1921
1922 struct il_cfg il4965_cfg = {
1923         .name = "Intel(R) Wireless WiFi Link 4965AGN",
1924         .fw_name_pre = IL4965_FW_PRE,
1925         .ucode_api_max = IL4965_UCODE_API_MAX,
1926         .ucode_api_min = IL4965_UCODE_API_MIN,
1927         .sku = IL_SKU_A | IL_SKU_G | IL_SKU_N,
1928         .valid_tx_ant = ANT_AB,
1929         .valid_rx_ant = ANT_ABC,
1930         .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
1931         .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
1932         .mod_params = &il4965_mod_params,
1933         .led_mode = IL_LED_BLINK,
1934         /*
1935          * Force use of chains B and C for scan RX on 5 GHz band
1936          * because the device has off-channel reception on chain A.
1937          */
1938         .scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC,
1939
1940         .eeprom_size = IL4965_EEPROM_IMG_SIZE,
1941         .num_of_queues = IL49_NUM_QUEUES,
1942         .num_of_ampdu_queues = IL49_NUM_AMPDU_QUEUES,
1943         .pll_cfg_val = 0,
1944         .set_l0s = true,
1945         .use_bsm = true,
1946         .led_compensation = 61,
1947         .chain_noise_num_beacons = IL4965_CAL_NUM_BEACONS,
1948         .wd_timeout = IL_DEF_WD_TIMEOUT,
1949         .temperature_kelvin = true,
1950         .ucode_tracing = true,
1951         .sensitivity_calib_by_driver = true,
1952         .chain_noise_calib_by_driver = true,
1953
1954         .regulatory_bands = {
1955                 EEPROM_REGULATORY_BAND_1_CHANNELS,
1956                 EEPROM_REGULATORY_BAND_2_CHANNELS,
1957                 EEPROM_REGULATORY_BAND_3_CHANNELS,
1958                 EEPROM_REGULATORY_BAND_4_CHANNELS,
1959                 EEPROM_REGULATORY_BAND_5_CHANNELS,
1960                 EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
1961                 EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
1962         },
1963
1964 };
1965
1966 /* Module firmware */
1967 MODULE_FIRMWARE(IL4965_MODULE_FIRMWARE(IL4965_UCODE_API_MAX));