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