drivers/net/wireless/intel/iwlegacy/4965.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
il4965_verify_inst_sparse
il4965_verify_inst_full
il4965_verify_ucode
il4965_eeprom_acquire_semaphore
il4965_eeprom_release_semaphore
il4965_eeprom_check_version
il4965_eeprom_get_mac
il4965_send_led_cmd
il4965_led_enable
il4965_verify_bsm
il4965_load_bsm
il4965_set_ucode_ptrs
il4965_init_alive_start
iw4965_is_ht40_channel
il4965_nic_config
il4965_chain_noise_reset
il4965_math_div_round
il4965_get_voltage_compensation
il4965_get_tx_atten_grp
il4965_get_sub_band
il4965_interpolate_value
il4965_interpolate_chan
get_min_power_idx
il4965_fill_txpower_tbl
il4965_send_tx_power
il4965_send_rxon_assoc
il4965_commit_rxon
il4965_hw_channel_switch
il4965_txq_update_byte_cnt_tbl
il4965_hw_get_temperature
il4965_is_temp_calib_needed
il4965_temperature_calib
il4965_get_hcmd_size
il4965_build_addsta_hcmd
il4965_post_scan
il4965_post_associate
il4965_config_ap
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   5  *
   6  * Contact Information:
   7  *  Intel Linux Wireless <ilw@linux.intel.com>
   8  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
   9  *
  10  *****************************************************************************/
  11 
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/dma-mapping.h>
  16 #include <linux/delay.h>
  17 #include <linux/sched.h>
  18 #include <linux/skbuff.h>
  19 #include <linux/netdevice.h>
  20 #include <net/mac80211.h>
  21 #include <linux/etherdevice.h>
  22 #include <asm/unaligned.h>
  23 
  24 #include "common.h"
  25 #include "4965.h"
  26 
  27 /**
  28  * il_verify_inst_sparse - verify runtime uCode image in card vs. host,
  29  *   using sample data 100 bytes apart.  If these sample points are good,
  30  *   it's a pretty good bet that everything between them is good, too.
  31  */
  32 static int
  33 il4965_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len)
  34 {
  35         u32 val;
  36         int ret = 0;
  37         u32 errcnt = 0;
  38         u32 i;
  39 
  40         D_INFO("ucode inst image size is %u\n", len);
  41 
  42         for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) {
  43                 /* read data comes through single port, auto-incr addr */
  44                 /* NOTE: Use the debugless read so we don't flood kernel log
  45                  * if IL_DL_IO is set */
  46                 il_wr(il, HBUS_TARG_MEM_RADDR, i + IL4965_RTC_INST_LOWER_BOUND);
  47                 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
  48                 if (val != le32_to_cpu(*image)) {
  49                         ret = -EIO;
  50                         errcnt++;
  51                         if (errcnt >= 3)
  52                                 break;
  53                 }
  54         }
  55 
  56         return ret;
  57 }
  58 
  59 /**
  60  * il4965_verify_inst_full - verify runtime uCode image in card vs. host,
  61  *     looking at all data.
  62  */
  63 static int
  64 il4965_verify_inst_full(struct il_priv *il, __le32 * image, u32 len)
  65 {
  66         u32 val;
  67         u32 save_len = len;
  68         int ret = 0;
  69         u32 errcnt;
  70 
  71         D_INFO("ucode inst image size is %u\n", len);
  72 
  73         il_wr(il, HBUS_TARG_MEM_RADDR, IL4965_RTC_INST_LOWER_BOUND);
  74 
  75         errcnt = 0;
  76         for (; len > 0; len -= sizeof(u32), image++) {
  77                 /* read data comes through single port, auto-incr addr */
  78                 /* NOTE: Use the debugless read so we don't flood kernel log
  79                  * if IL_DL_IO is set */
  80                 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
  81                 if (val != le32_to_cpu(*image)) {
  82                         IL_ERR("uCode INST section is invalid at "
  83                                "offset 0x%x, is 0x%x, s/b 0x%x\n",
  84                                save_len - len, val, le32_to_cpu(*image));
  85                         ret = -EIO;
  86                         errcnt++;
  87                         if (errcnt >= 20)
  88                                 break;
  89                 }
  90         }
  91 
  92         if (!errcnt)
  93                 D_INFO("ucode image in INSTRUCTION memory is good\n");
  94 
  95         return ret;
  96 }
  97 
  98 /**
  99  * il4965_verify_ucode - determine which instruction image is in SRAM,
 100  *    and verify its contents
 101  */
 102 int
 103 il4965_verify_ucode(struct il_priv *il)
 104 {
 105         __le32 *image;
 106         u32 len;
 107         int ret;
 108 
 109         /* Try bootstrap */
 110         image = (__le32 *) il->ucode_boot.v_addr;
 111         len = il->ucode_boot.len;
 112         ret = il4965_verify_inst_sparse(il, image, len);
 113         if (!ret) {
 114                 D_INFO("Bootstrap uCode is good in inst SRAM\n");
 115                 return 0;
 116         }
 117 
 118         /* Try initialize */
 119         image = (__le32 *) il->ucode_init.v_addr;
 120         len = il->ucode_init.len;
 121         ret = il4965_verify_inst_sparse(il, image, len);
 122         if (!ret) {
 123                 D_INFO("Initialize uCode is good in inst SRAM\n");
 124                 return 0;
 125         }
 126 
 127         /* Try runtime/protocol */
 128         image = (__le32 *) il->ucode_code.v_addr;
 129         len = il->ucode_code.len;
 130         ret = il4965_verify_inst_sparse(il, image, len);
 131         if (!ret) {
 132                 D_INFO("Runtime uCode is good in inst SRAM\n");
 133                 return 0;
 134         }
 135 
 136         IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
 137 
 138         /* Since nothing seems to match, show first several data entries in
 139          * instruction SRAM, so maybe visual inspection will give a clue.
 140          * Selection of bootstrap image (vs. other images) is arbitrary. */
 141         image = (__le32 *) il->ucode_boot.v_addr;
 142         len = il->ucode_boot.len;
 143         ret = il4965_verify_inst_full(il, image, len);
 144 
 145         return ret;
 146 }
 147 
 148 /******************************************************************************
 149  *
 150  * EEPROM related functions
 151  *
 152 ******************************************************************************/
 153 
 154 /*
 155  * The device's EEPROM semaphore prevents conflicts between driver and uCode
 156  * when accessing the EEPROM; each access is a series of pulses to/from the
 157  * EEPROM chip, not a single event, so even reads could conflict if they
 158  * weren't arbitrated by the semaphore.
 159  */
 160 int
 161 il4965_eeprom_acquire_semaphore(struct il_priv *il)
 162 {
 163         u16 count;
 164         int ret;
 165 
 166         for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
 167                 /* Request semaphore */
 168                 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 169                            CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 170 
 171                 /* See if we got it */
 172                 ret =
 173                     _il_poll_bit(il, CSR_HW_IF_CONFIG_REG,
 174                                  CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 175                                  CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
 176                                  EEPROM_SEM_TIMEOUT);
 177                 if (ret >= 0)
 178                         return ret;
 179         }
 180 
 181         return ret;
 182 }
 183 
 184 void
 185 il4965_eeprom_release_semaphore(struct il_priv *il)
 186 {
 187         il_clear_bit(il, CSR_HW_IF_CONFIG_REG,
 188                      CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
 189 
 190 }
 191 
 192 int
 193 il4965_eeprom_check_version(struct il_priv *il)
 194 {
 195         u16 eeprom_ver;
 196         u16 calib_ver;
 197 
 198         eeprom_ver = il_eeprom_query16(il, EEPROM_VERSION);
 199         calib_ver = il_eeprom_query16(il, EEPROM_4965_CALIB_VERSION_OFFSET);
 200 
 201         if (eeprom_ver < il->cfg->eeprom_ver ||
 202             calib_ver < il->cfg->eeprom_calib_ver)
 203                 goto err;
 204 
 205         IL_INFO("device EEPROM VER=0x%x, CALIB=0x%x\n", eeprom_ver, calib_ver);
 206 
 207         return 0;
 208 err:
 209         IL_ERR("Unsupported (too old) EEPROM VER=0x%x < 0x%x "
 210                "CALIB=0x%x < 0x%x\n", eeprom_ver, il->cfg->eeprom_ver,
 211                calib_ver, il->cfg->eeprom_calib_ver);
 212         return -EINVAL;
 213 
 214 }
 215 
 216 void
 217 il4965_eeprom_get_mac(const struct il_priv *il, u8 * mac)
 218 {
 219         const u8 *addr = il_eeprom_query_addr(il,
 220                                               EEPROM_MAC_ADDRESS);
 221         memcpy(mac, addr, ETH_ALEN);
 222 }
 223 
 224 /* Send led command */
 225 static int
 226 il4965_send_led_cmd(struct il_priv *il, struct il_led_cmd *led_cmd)
 227 {
 228         struct il_host_cmd cmd = {
 229                 .id = C_LEDS,
 230                 .len = sizeof(struct il_led_cmd),
 231                 .data = led_cmd,
 232                 .flags = CMD_ASYNC,
 233                 .callback = NULL,
 234         };
 235         u32 reg;
 236 
 237         reg = _il_rd(il, CSR_LED_REG);
 238         if (reg != (reg & CSR_LED_BSM_CTRL_MSK))
 239                 _il_wr(il, CSR_LED_REG, reg & CSR_LED_BSM_CTRL_MSK);
 240 
 241         return il_send_cmd(il, &cmd);
 242 }
 243 
 244 /* Set led register off */
 245 void
 246 il4965_led_enable(struct il_priv *il)
 247 {
 248         _il_wr(il, CSR_LED_REG, CSR_LED_REG_TRUN_ON);
 249 }
 250 
 251 static int il4965_send_tx_power(struct il_priv *il);
 252 static int il4965_hw_get_temperature(struct il_priv *il);
 253 
 254 /* Highest firmware API version supported */
 255 #define IL4965_UCODE_API_MAX 2
 256 
 257 /* Lowest firmware API version supported */
 258 #define IL4965_UCODE_API_MIN 2
 259 
 260 #define IL4965_FW_PRE "iwlwifi-4965-"
 261 #define _IL4965_MODULE_FIRMWARE(api) IL4965_FW_PRE #api ".ucode"
 262 #define IL4965_MODULE_FIRMWARE(api) _IL4965_MODULE_FIRMWARE(api)
 263 
 264 /* check contents of special bootstrap uCode SRAM */
 265 static int
 266 il4965_verify_bsm(struct il_priv *il)
 267 {
 268         __le32 *image = il->ucode_boot.v_addr;
 269         u32 len = il->ucode_boot.len;
 270         u32 reg;
 271         u32 val;
 272 
 273         D_INFO("Begin verify bsm\n");
 274 
 275         /* verify BSM SRAM contents */
 276         val = il_rd_prph(il, BSM_WR_DWCOUNT_REG);
 277         for (reg = BSM_SRAM_LOWER_BOUND; reg < BSM_SRAM_LOWER_BOUND + len;
 278              reg += sizeof(u32), image++) {
 279                 val = il_rd_prph(il, reg);
 280                 if (val != le32_to_cpu(*image)) {
 281                         IL_ERR("BSM uCode verification failed at "
 282                                "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
 283                                BSM_SRAM_LOWER_BOUND, reg - BSM_SRAM_LOWER_BOUND,
 284                                len, val, le32_to_cpu(*image));
 285                         return -EIO;
 286                 }
 287         }
 288 
 289         D_INFO("BSM bootstrap uCode image OK\n");
 290 
 291         return 0;
 292 }
 293 
 294 /**
 295  * il4965_load_bsm - Load bootstrap instructions
 296  *
 297  * BSM operation:
 298  *
 299  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 300  * in special SRAM that does not power down during RFKILL.  When powering back
 301  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 302  * the bootstrap program into the on-board processor, and starts it.
 303  *
 304  * The bootstrap program loads (via DMA) instructions and data for a new
 305  * program from host DRAM locations indicated by the host driver in the
 306  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 307  * automatically.
 308  *
 309  * When initializing the NIC, the host driver points the BSM to the
 310  * "initialize" uCode image.  This uCode sets up some internal data, then
 311  * notifies host via "initialize alive" that it is complete.
 312  *
 313  * The host then replaces the BSM_DRAM_* pointer values to point to the
 314  * normal runtime uCode instructions and a backup uCode data cache buffer
 315  * (filled initially with starting data values for the on-board processor),
 316  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 317  * which begins normal operation.
 318  *
 319  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 320  * the backup data cache in DRAM before SRAM is powered down.
 321  *
 322  * When powering back up, the BSM loads the bootstrap program.  This reloads
 323  * the runtime uCode instructions and the backup data cache into SRAM,
 324  * and re-launches the runtime uCode from where it left off.
 325  */
 326 static int
 327 il4965_load_bsm(struct il_priv *il)
 328 {
 329         __le32 *image = il->ucode_boot.v_addr;
 330         u32 len = il->ucode_boot.len;
 331         dma_addr_t pinst;
 332         dma_addr_t pdata;
 333         u32 inst_len;
 334         u32 data_len;
 335         int i;
 336         u32 done;
 337         u32 reg_offset;
 338         int ret;
 339 
 340         D_INFO("Begin load bsm\n");
 341 
 342         il->ucode_type = UCODE_RT;
 343 
 344         /* make sure bootstrap program is no larger than BSM's SRAM size */
 345         if (len > IL49_MAX_BSM_SIZE)
 346                 return -EINVAL;
 347 
 348         /* Tell bootstrap uCode where to find the "Initialize" uCode
 349          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 350          * NOTE:  il_init_alive_start() will replace these values,
 351          *        after the "initialize" uCode has run, to point to
 352          *        runtime/protocol instructions and backup data cache.
 353          */
 354         pinst = il->ucode_init.p_addr >> 4;
 355         pdata = il->ucode_init_data.p_addr >> 4;
 356         inst_len = il->ucode_init.len;
 357         data_len = il->ucode_init_data.len;
 358 
 359         il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
 360         il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
 361         il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 362         il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 363 
 364         /* Fill BSM memory with bootstrap instructions */
 365         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 366              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 367              reg_offset += sizeof(u32), image++)
 368                 _il_wr_prph(il, reg_offset, le32_to_cpu(*image));
 369 
 370         ret = il4965_verify_bsm(il);
 371         if (ret)
 372                 return ret;
 373 
 374         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 375         il_wr_prph(il, BSM_WR_MEM_SRC_REG, 0x0);
 376         il_wr_prph(il, BSM_WR_MEM_DST_REG, IL49_RTC_INST_LOWER_BOUND);
 377         il_wr_prph(il, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 378 
 379         /* Load bootstrap code into instruction SRAM now,
 380          *   to prepare to load "initialize" uCode */
 381         il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 382 
 383         /* Wait for load of bootstrap uCode to finish */
 384         for (i = 0; i < 100; i++) {
 385                 done = il_rd_prph(il, BSM_WR_CTRL_REG);
 386                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 387                         break;
 388                 udelay(10);
 389         }
 390         if (i < 100)
 391                 D_INFO("BSM write complete, poll %d iterations\n", i);
 392         else {
 393                 IL_ERR("BSM write did not complete!\n");
 394                 return -EIO;
 395         }
 396 
 397         /* Enable future boot loads whenever power management unit triggers it
 398          *   (e.g. when powering back up after power-save shutdown) */
 399         il_wr_prph(il, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 400 
 401         return 0;
 402 }
 403 
 404 /**
 405  * il4965_set_ucode_ptrs - Set uCode address location
 406  *
 407  * Tell initialization uCode where to find runtime uCode.
 408  *
 409  * BSM registers initially contain pointers to initialization uCode.
 410  * We need to replace them to load runtime uCode inst and data,
 411  * and to save runtime data when powering down.
 412  */
 413 static int
 414 il4965_set_ucode_ptrs(struct il_priv *il)
 415 {
 416         dma_addr_t pinst;
 417         dma_addr_t pdata;
 418         int ret = 0;
 419 
 420         /* bits 35:4 for 4965 */
 421         pinst = il->ucode_code.p_addr >> 4;
 422         pdata = il->ucode_data_backup.p_addr >> 4;
 423 
 424         /* Tell bootstrap uCode where to find image to load */
 425         il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
 426         il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
 427         il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len);
 428 
 429         /* Inst byte count must be last to set up, bit 31 signals uCode
 430          *   that all new ptr/size info is in place */
 431         il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG,
 432                    il->ucode_code.len | BSM_DRAM_INST_LOAD);
 433         D_INFO("Runtime uCode pointers are set.\n");
 434 
 435         return ret;
 436 }
 437 
 438 /**
 439  * il4965_init_alive_start - Called after N_ALIVE notification received
 440  *
 441  * Called after N_ALIVE notification received from "initialize" uCode.
 442  *
 443  * The 4965 "initialize" ALIVE reply contains calibration data for:
 444  *   Voltage, temperature, and MIMO tx gain correction, now stored in il
 445  *   (3945 does not contain this data).
 446  *
 447  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 448 */
 449 static void
 450 il4965_init_alive_start(struct il_priv *il)
 451 {
 452         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 453          * This is a paranoid check, because we would not have gotten the
 454          * "initialize" alive if code weren't properly loaded.  */
 455         if (il4965_verify_ucode(il)) {
 456                 /* Runtime instruction load was bad;
 457                  * take it all the way back down so we can try again */
 458                 D_INFO("Bad \"initialize\" uCode load.\n");
 459                 goto restart;
 460         }
 461 
 462         /* Calculate temperature */
 463         il->temperature = il4965_hw_get_temperature(il);
 464 
 465         /* Send pointers to protocol/runtime uCode image ... init code will
 466          * load and launch runtime uCode, which will send us another "Alive"
 467          * notification. */
 468         D_INFO("Initialization Alive received.\n");
 469         if (il4965_set_ucode_ptrs(il)) {
 470                 /* Runtime instruction load won't happen;
 471                  * take it all the way back down so we can try again */
 472                 D_INFO("Couldn't set up uCode pointers.\n");
 473                 goto restart;
 474         }
 475         return;
 476 
 477 restart:
 478         queue_work(il->workqueue, &il->restart);
 479 }
 480 
 481 static bool
 482 iw4965_is_ht40_channel(__le32 rxon_flags)
 483 {
 484         int chan_mod =
 485             le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) >>
 486             RXON_FLG_CHANNEL_MODE_POS;
 487         return (chan_mod == CHANNEL_MODE_PURE_40 ||
 488                 chan_mod == CHANNEL_MODE_MIXED);
 489 }
 490 
 491 void
 492 il4965_nic_config(struct il_priv *il)
 493 {
 494         unsigned long flags;
 495         u16 radio_cfg;
 496 
 497         spin_lock_irqsave(&il->lock, flags);
 498 
 499         radio_cfg = il_eeprom_query16(il, EEPROM_RADIO_CONFIG);
 500 
 501         /* write radio config values to register */
 502         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 503                 il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 504                            EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 505                            EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 506                            EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 507 
 508         /* set CSR_HW_CONFIG_REG for uCode use */
 509         il_set_bit(il, CSR_HW_IF_CONFIG_REG,
 510                    CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 511                    CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 512 
 513         il->calib_info =
 514             (struct il_eeprom_calib_info *)
 515             il_eeprom_query_addr(il, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 516 
 517         spin_unlock_irqrestore(&il->lock, flags);
 518 }
 519 
 520 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 521  * Called after every association, but this runs only once!
 522  *  ... once chain noise is calibrated the first time, it's good forever.  */
 523 static void
 524 il4965_chain_noise_reset(struct il_priv *il)
 525 {
 526         struct il_chain_noise_data *data = &(il->chain_noise_data);
 527 
 528         if (data->state == IL_CHAIN_NOISE_ALIVE && il_is_any_associated(il)) {
 529                 struct il_calib_diff_gain_cmd cmd;
 530 
 531                 /* clear data for chain noise calibration algorithm */
 532                 data->chain_noise_a = 0;
 533                 data->chain_noise_b = 0;
 534                 data->chain_noise_c = 0;
 535                 data->chain_signal_a = 0;
 536                 data->chain_signal_b = 0;
 537                 data->chain_signal_c = 0;
 538                 data->beacon_count = 0;
 539 
 540                 memset(&cmd, 0, sizeof(cmd));
 541                 cmd.hdr.op_code = IL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 542                 cmd.diff_gain_a = 0;
 543                 cmd.diff_gain_b = 0;
 544                 cmd.diff_gain_c = 0;
 545                 if (il_send_cmd_pdu(il, C_PHY_CALIBRATION, sizeof(cmd), &cmd))
 546                         IL_ERR("Could not send C_PHY_CALIBRATION\n");
 547                 data->state = IL_CHAIN_NOISE_ACCUMULATE;
 548                 D_CALIB("Run chain_noise_calibrate\n");
 549         }
 550 }
 551 
 552 static s32
 553 il4965_math_div_round(s32 num, s32 denom, s32 * res)
 554 {
 555         s32 sign = 1;
 556 
 557         if (num < 0) {
 558                 sign = -sign;
 559                 num = -num;
 560         }
 561         if (denom < 0) {
 562                 sign = -sign;
 563                 denom = -denom;
 564         }
 565         *res = ((num * 2 + denom) / (denom * 2)) * sign;
 566 
 567         return 1;
 568 }
 569 
 570 /**
 571  * il4965_get_voltage_compensation - Power supply voltage comp for txpower
 572  *
 573  * Determines power supply voltage compensation for txpower calculations.
 574  * Returns number of 1/2-dB steps to subtract from gain table idx,
 575  * to compensate for difference between power supply voltage during
 576  * factory measurements, vs. current power supply voltage.
 577  *
 578  * Voltage indication is higher for lower voltage.
 579  * Lower voltage requires more gain (lower gain table idx).
 580  */
 581 static s32
 582 il4965_get_voltage_compensation(s32 eeprom_voltage, s32 current_voltage)
 583 {
 584         s32 comp = 0;
 585 
 586         if (TX_POWER_IL_ILLEGAL_VOLTAGE == eeprom_voltage ||
 587             TX_POWER_IL_ILLEGAL_VOLTAGE == current_voltage)
 588                 return 0;
 589 
 590         il4965_math_div_round(current_voltage - eeprom_voltage,
 591                               TX_POWER_IL_VOLTAGE_CODES_PER_03V, &comp);
 592 
 593         if (current_voltage > eeprom_voltage)
 594                 comp *= 2;
 595         if ((comp < -2) || (comp > 2))
 596                 comp = 0;
 597 
 598         return comp;
 599 }
 600 
 601 static s32
 602 il4965_get_tx_atten_grp(u16 channel)
 603 {
 604         if (channel >= CALIB_IL_TX_ATTEN_GR5_FCH &&
 605             channel <= CALIB_IL_TX_ATTEN_GR5_LCH)
 606                 return CALIB_CH_GROUP_5;
 607 
 608         if (channel >= CALIB_IL_TX_ATTEN_GR1_FCH &&
 609             channel <= CALIB_IL_TX_ATTEN_GR1_LCH)
 610                 return CALIB_CH_GROUP_1;
 611 
 612         if (channel >= CALIB_IL_TX_ATTEN_GR2_FCH &&
 613             channel <= CALIB_IL_TX_ATTEN_GR2_LCH)
 614                 return CALIB_CH_GROUP_2;
 615 
 616         if (channel >= CALIB_IL_TX_ATTEN_GR3_FCH &&
 617             channel <= CALIB_IL_TX_ATTEN_GR3_LCH)
 618                 return CALIB_CH_GROUP_3;
 619 
 620         if (channel >= CALIB_IL_TX_ATTEN_GR4_FCH &&
 621             channel <= CALIB_IL_TX_ATTEN_GR4_LCH)
 622                 return CALIB_CH_GROUP_4;
 623 
 624         return -EINVAL;
 625 }
 626 
 627 static u32
 628 il4965_get_sub_band(const struct il_priv *il, u32 channel)
 629 {
 630         s32 b = -1;
 631 
 632         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
 633                 if (il->calib_info->band_info[b].ch_from == 0)
 634                         continue;
 635 
 636                 if (channel >= il->calib_info->band_info[b].ch_from &&
 637                     channel <= il->calib_info->band_info[b].ch_to)
 638                         break;
 639         }
 640 
 641         return b;
 642 }
 643 
 644 static s32
 645 il4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
 646 {
 647         s32 val;
 648 
 649         if (x2 == x1)
 650                 return y1;
 651         else {
 652                 il4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
 653                 return val + y2;
 654         }
 655 }
 656 
 657 /**
 658  * il4965_interpolate_chan - Interpolate factory measurements for one channel
 659  *
 660  * Interpolates factory measurements from the two sample channels within a
 661  * sub-band, to apply to channel of interest.  Interpolation is proportional to
 662  * differences in channel frequencies, which is proportional to differences
 663  * in channel number.
 664  */
 665 static int
 666 il4965_interpolate_chan(struct il_priv *il, u32 channel,
 667                         struct il_eeprom_calib_ch_info *chan_info)
 668 {
 669         s32 s = -1;
 670         u32 c;
 671         u32 m;
 672         const struct il_eeprom_calib_measure *m1;
 673         const struct il_eeprom_calib_measure *m2;
 674         struct il_eeprom_calib_measure *omeas;
 675         u32 ch_i1;
 676         u32 ch_i2;
 677 
 678         s = il4965_get_sub_band(il, channel);
 679         if (s >= EEPROM_TX_POWER_BANDS) {
 680                 IL_ERR("Tx Power can not find channel %d\n", channel);
 681                 return -1;
 682         }
 683 
 684         ch_i1 = il->calib_info->band_info[s].ch1.ch_num;
 685         ch_i2 = il->calib_info->band_info[s].ch2.ch_num;
 686         chan_info->ch_num = (u8) channel;
 687 
 688         D_TXPOWER("channel %d subband %d factory cal ch %d & %d\n", channel, s,
 689                   ch_i1, ch_i2);
 690 
 691         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
 692                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
 693                         m1 = &(il->calib_info->band_info[s].ch1.
 694                                measurements[c][m]);
 695                         m2 = &(il->calib_info->band_info[s].ch2.
 696                                measurements[c][m]);
 697                         omeas = &(chan_info->measurements[c][m]);
 698 
 699                         omeas->actual_pow =
 700                             (u8) il4965_interpolate_value(channel, ch_i1,
 701                                                           m1->actual_pow, ch_i2,
 702                                                           m2->actual_pow);
 703                         omeas->gain_idx =
 704                             (u8) il4965_interpolate_value(channel, ch_i1,
 705                                                           m1->gain_idx, ch_i2,
 706                                                           m2->gain_idx);
 707                         omeas->temperature =
 708                             (u8) il4965_interpolate_value(channel, ch_i1,
 709                                                           m1->temperature,
 710                                                           ch_i2,
 711                                                           m2->temperature);
 712                         omeas->pa_det =
 713                             (s8) il4965_interpolate_value(channel, ch_i1,
 714                                                           m1->pa_det, ch_i2,
 715                                                           m2->pa_det);
 716 
 717                         D_TXPOWER("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c,
 718                                   m, m1->actual_pow, m2->actual_pow,
 719                                   omeas->actual_pow);
 720                         D_TXPOWER("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c,
 721                                   m, m1->gain_idx, m2->gain_idx,
 722                                   omeas->gain_idx);
 723                         D_TXPOWER("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c,
 724                                   m, m1->pa_det, m2->pa_det, omeas->pa_det);
 725                         D_TXPOWER("chain %d meas %d  T1=%d  T2=%d  T=%d\n", c,
 726                                   m, m1->temperature, m2->temperature,
 727                                   omeas->temperature);
 728                 }
 729         }
 730 
 731         return 0;
 732 }
 733 
 734 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
 735  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
 736 static s32 back_off_table[] = {
 737         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
 738         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
 739         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
 740         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
 741         10                      /* CCK */
 742 };
 743 
 744 /* Thermal compensation values for txpower for various frequency ranges ...
 745  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
 746 static struct il4965_txpower_comp_entry {
 747         s32 degrees_per_05db_a;
 748         s32 degrees_per_05db_a_denom;
 749 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
 750         {
 751         9, 2},                  /* group 0 5.2, ch  34-43 */
 752         {
 753         4, 1},                  /* group 1 5.2, ch  44-70 */
 754         {
 755         4, 1},                  /* group 2 5.2, ch  71-124 */
 756         {
 757         4, 1},                  /* group 3 5.2, ch 125-200 */
 758         {
 759         3, 1}                   /* group 4 2.4, ch   all */
 760 };
 761 
 762 static s32
 763 get_min_power_idx(s32 rate_power_idx, u32 band)
 764 {
 765         if (!band) {
 766                 if ((rate_power_idx & 7) <= 4)
 767                         return MIN_TX_GAIN_IDX_52GHZ_EXT;
 768         }
 769         return MIN_TX_GAIN_IDX;
 770 }
 771 
 772 struct gain_entry {
 773         u8 dsp;
 774         u8 radio;
 775 };
 776 
 777 static const struct gain_entry gain_table[2][108] = {
 778         /* 5.2GHz power gain idx table */
 779         {
 780          {123, 0x3F},           /* highest txpower */
 781          {117, 0x3F},
 782          {110, 0x3F},
 783          {104, 0x3F},
 784          {98, 0x3F},
 785          {110, 0x3E},
 786          {104, 0x3E},
 787          {98, 0x3E},
 788          {110, 0x3D},
 789          {104, 0x3D},
 790          {98, 0x3D},
 791          {110, 0x3C},
 792          {104, 0x3C},
 793          {98, 0x3C},
 794          {110, 0x3B},
 795          {104, 0x3B},
 796          {98, 0x3B},
 797          {110, 0x3A},
 798          {104, 0x3A},
 799          {98, 0x3A},
 800          {110, 0x39},
 801          {104, 0x39},
 802          {98, 0x39},
 803          {110, 0x38},
 804          {104, 0x38},
 805          {98, 0x38},
 806          {110, 0x37},
 807          {104, 0x37},
 808          {98, 0x37},
 809          {110, 0x36},
 810          {104, 0x36},
 811          {98, 0x36},
 812          {110, 0x35},
 813          {104, 0x35},
 814          {98, 0x35},
 815          {110, 0x34},
 816          {104, 0x34},
 817          {98, 0x34},
 818          {110, 0x33},
 819          {104, 0x33},
 820          {98, 0x33},
 821          {110, 0x32},
 822          {104, 0x32},
 823          {98, 0x32},
 824          {110, 0x31},
 825          {104, 0x31},
 826          {98, 0x31},
 827          {110, 0x30},
 828          {104, 0x30},
 829          {98, 0x30},
 830          {110, 0x25},
 831          {104, 0x25},
 832          {98, 0x25},
 833          {110, 0x24},
 834          {104, 0x24},
 835          {98, 0x24},
 836          {110, 0x23},
 837          {104, 0x23},
 838          {98, 0x23},
 839          {110, 0x22},
 840          {104, 0x18},
 841          {98, 0x18},
 842          {110, 0x17},
 843          {104, 0x17},
 844          {98, 0x17},
 845          {110, 0x16},
 846          {104, 0x16},
 847          {98, 0x16},
 848          {110, 0x15},
 849          {104, 0x15},
 850          {98, 0x15},
 851          {110, 0x14},
 852          {104, 0x14},
 853          {98, 0x14},
 854          {110, 0x13},
 855          {104, 0x13},
 856          {98, 0x13},
 857          {110, 0x12},
 858          {104, 0x08},
 859          {98, 0x08},
 860          {110, 0x07},
 861          {104, 0x07},
 862          {98, 0x07},
 863          {110, 0x06},
 864          {104, 0x06},
 865          {98, 0x06},
 866          {110, 0x05},
 867          {104, 0x05},
 868          {98, 0x05},
 869          {110, 0x04},
 870          {104, 0x04},
 871          {98, 0x04},
 872          {110, 0x03},
 873          {104, 0x03},
 874          {98, 0x03},
 875          {110, 0x02},
 876          {104, 0x02},
 877          {98, 0x02},
 878          {110, 0x01},
 879          {104, 0x01},
 880          {98, 0x01},
 881          {110, 0x00},
 882          {104, 0x00},
 883          {98, 0x00},
 884          {93, 0x00},
 885          {88, 0x00},
 886          {83, 0x00},
 887          {78, 0x00},
 888          },
 889         /* 2.4GHz power gain idx table */
 890         {
 891          {110, 0x3f},           /* highest txpower */
 892          {104, 0x3f},
 893          {98, 0x3f},
 894          {110, 0x3e},
 895          {104, 0x3e},
 896          {98, 0x3e},
 897          {110, 0x3d},
 898          {104, 0x3d},
 899          {98, 0x3d},
 900          {110, 0x3c},
 901          {104, 0x3c},
 902          {98, 0x3c},
 903          {110, 0x3b},
 904          {104, 0x3b},
 905          {98, 0x3b},
 906          {110, 0x3a},
 907          {104, 0x3a},
 908          {98, 0x3a},
 909          {110, 0x39},
 910          {104, 0x39},
 911          {98, 0x39},
 912          {110, 0x38},
 913          {104, 0x38},
 914          {98, 0x38},
 915          {110, 0x37},
 916          {104, 0x37},
 917          {98, 0x37},
 918          {110, 0x36},
 919          {104, 0x36},
 920          {98, 0x36},
 921          {110, 0x35},
 922          {104, 0x35},
 923          {98, 0x35},
 924          {110, 0x34},
 925          {104, 0x34},
 926          {98, 0x34},
 927          {110, 0x33},
 928          {104, 0x33},
 929          {98, 0x33},
 930          {110, 0x32},
 931          {104, 0x32},
 932          {98, 0x32},
 933          {110, 0x31},
 934          {104, 0x31},
 935          {98, 0x31},
 936          {110, 0x30},
 937          {104, 0x30},
 938          {98, 0x30},
 939          {110, 0x6},
 940          {104, 0x6},
 941          {98, 0x6},
 942          {110, 0x5},
 943          {104, 0x5},
 944          {98, 0x5},
 945          {110, 0x4},
 946          {104, 0x4},
 947          {98, 0x4},
 948          {110, 0x3},
 949          {104, 0x3},
 950          {98, 0x3},
 951          {110, 0x2},
 952          {104, 0x2},
 953          {98, 0x2},
 954          {110, 0x1},
 955          {104, 0x1},
 956          {98, 0x1},
 957          {110, 0x0},
 958          {104, 0x0},
 959          {98, 0x0},
 960          {97, 0},
 961          {96, 0},
 962          {95, 0},
 963          {94, 0},
 964          {93, 0},
 965          {92, 0},
 966          {91, 0},
 967          {90, 0},
 968          {89, 0},
 969          {88, 0},
 970          {87, 0},
 971          {86, 0},
 972          {85, 0},
 973          {84, 0},
 974          {83, 0},
 975          {82, 0},
 976          {81, 0},
 977          {80, 0},
 978          {79, 0},
 979          {78, 0},
 980          {77, 0},
 981          {76, 0},
 982          {75, 0},
 983          {74, 0},
 984          {73, 0},
 985          {72, 0},
 986          {71, 0},
 987          {70, 0},
 988          {69, 0},
 989          {68, 0},
 990          {67, 0},
 991          {66, 0},
 992          {65, 0},
 993          {64, 0},
 994          {63, 0},
 995          {62, 0},
 996          {61, 0},
 997          {60, 0},
 998          {59, 0},
 999          }
1000 };
1001 
1002 static int
1003 il4965_fill_txpower_tbl(struct il_priv *il, u8 band, u16 channel, u8 is_ht40,
1004                         u8 ctrl_chan_high,
1005                         struct il4965_tx_power_db *tx_power_tbl)
1006 {
1007         u8 saturation_power;
1008         s32 target_power;
1009         s32 user_target_power;
1010         s32 power_limit;
1011         s32 current_temp;
1012         s32 reg_limit;
1013         s32 current_regulatory;
1014         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1015         int i;
1016         int c;
1017         const struct il_channel_info *ch_info = NULL;
1018         struct il_eeprom_calib_ch_info ch_eeprom_info;
1019         const struct il_eeprom_calib_measure *measurement;
1020         s16 voltage;
1021         s32 init_voltage;
1022         s32 voltage_compensation;
1023         s32 degrees_per_05db_num;
1024         s32 degrees_per_05db_denom;
1025         s32 factory_temp;
1026         s32 temperature_comp[2];
1027         s32 factory_gain_idx[2];
1028         s32 factory_actual_pwr[2];
1029         s32 power_idx;
1030 
1031         /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1032          *   are used for idxing into txpower table) */
1033         user_target_power = 2 * il->tx_power_user_lmt;
1034 
1035         /* Get current (RXON) channel, band, width */
1036         D_TXPOWER("chan %d band %d is_ht40 %d\n", channel, band, is_ht40);
1037 
1038         ch_info = il_get_channel_info(il, il->band, channel);
1039 
1040         if (!il_is_channel_valid(ch_info))
1041                 return -EINVAL;
1042 
1043         /* get txatten group, used to select 1) thermal txpower adjustment
1044          *   and 2) mimo txpower balance between Tx chains. */
1045         txatten_grp = il4965_get_tx_atten_grp(channel);
1046         if (txatten_grp < 0) {
1047                 IL_ERR("Can't find txatten group for channel %d.\n", channel);
1048                 return txatten_grp;
1049         }
1050 
1051         D_TXPOWER("channel %d belongs to txatten group %d\n", channel,
1052                   txatten_grp);
1053 
1054         if (is_ht40) {
1055                 if (ctrl_chan_high)
1056                         channel -= 2;
1057                 else
1058                         channel += 2;
1059         }
1060 
1061         /* hardware txpower limits ...
1062          * saturation (clipping distortion) txpowers are in half-dBm */
1063         if (band)
1064                 saturation_power = il->calib_info->saturation_power24;
1065         else
1066                 saturation_power = il->calib_info->saturation_power52;
1067 
1068         if (saturation_power < IL_TX_POWER_SATURATION_MIN ||
1069             saturation_power > IL_TX_POWER_SATURATION_MAX) {
1070                 if (band)
1071                         saturation_power = IL_TX_POWER_DEFAULT_SATURATION_24;
1072                 else
1073                         saturation_power = IL_TX_POWER_DEFAULT_SATURATION_52;
1074         }
1075 
1076         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1077          *   max_power_avg values are in dBm, convert * 2 */
1078         if (is_ht40)
1079                 reg_limit = ch_info->ht40_max_power_avg * 2;
1080         else
1081                 reg_limit = ch_info->max_power_avg * 2;
1082 
1083         if ((reg_limit < IL_TX_POWER_REGULATORY_MIN) ||
1084             (reg_limit > IL_TX_POWER_REGULATORY_MAX)) {
1085                 if (band)
1086                         reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_24;
1087                 else
1088                         reg_limit = IL_TX_POWER_DEFAULT_REGULATORY_52;
1089         }
1090 
1091         /* Interpolate txpower calibration values for this channel,
1092          *   based on factory calibration tests on spaced channels. */
1093         il4965_interpolate_chan(il, channel, &ch_eeprom_info);
1094 
1095         /* calculate tx gain adjustment based on power supply voltage */
1096         voltage = le16_to_cpu(il->calib_info->voltage);
1097         init_voltage = (s32) le32_to_cpu(il->card_alive_init.voltage);
1098         voltage_compensation =
1099             il4965_get_voltage_compensation(voltage, init_voltage);
1100 
1101         D_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n", init_voltage,
1102                   voltage, voltage_compensation);
1103 
1104         /* get current temperature (Celsius) */
1105         current_temp = max(il->temperature, IL_TX_POWER_TEMPERATURE_MIN);
1106         current_temp = min(il->temperature, IL_TX_POWER_TEMPERATURE_MAX);
1107         current_temp = KELVIN_TO_CELSIUS(current_temp);
1108 
1109         /* select thermal txpower adjustment params, based on channel group
1110          *   (same frequency group used for mimo txatten adjustment) */
1111         degrees_per_05db_num =
1112             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1113         degrees_per_05db_denom =
1114             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1115 
1116         /* get per-chain txpower values from factory measurements */
1117         for (c = 0; c < 2; c++) {
1118                 measurement = &ch_eeprom_info.measurements[c][1];
1119 
1120                 /* txgain adjustment (in half-dB steps) based on difference
1121                  *   between factory and current temperature */
1122                 factory_temp = measurement->temperature;
1123                 il4965_math_div_round((current_temp -
1124                                        factory_temp) * degrees_per_05db_denom,
1125                                       degrees_per_05db_num,
1126                                       &temperature_comp[c]);
1127 
1128                 factory_gain_idx[c] = measurement->gain_idx;
1129                 factory_actual_pwr[c] = measurement->actual_pow;
1130 
1131                 D_TXPOWER("chain = %d\n", c);
1132                 D_TXPOWER("fctry tmp %d, " "curr tmp %d, comp %d steps\n",
1133                           factory_temp, current_temp, temperature_comp[c]);
1134 
1135                 D_TXPOWER("fctry idx %d, fctry pwr %d\n", factory_gain_idx[c],
1136                           factory_actual_pwr[c]);
1137         }
1138 
1139         /* for each of 33 bit-rates (including 1 for CCK) */
1140         for (i = 0; i < POWER_TBL_NUM_ENTRIES; i++) {
1141                 u8 is_mimo_rate;
1142                 union il4965_tx_power_dual_stream tx_power;
1143 
1144                 /* for mimo, reduce each chain's txpower by half
1145                  * (3dB, 6 steps), so total output power is regulatory
1146                  * compliant. */
1147                 if (i & 0x8) {
1148                         current_regulatory =
1149                             reg_limit -
1150                             IL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1151                         is_mimo_rate = 1;
1152                 } else {
1153                         current_regulatory = reg_limit;
1154                         is_mimo_rate = 0;
1155                 }
1156 
1157                 /* find txpower limit, either hardware or regulatory */
1158                 power_limit = saturation_power - back_off_table[i];
1159                 if (power_limit > current_regulatory)
1160                         power_limit = current_regulatory;
1161 
1162                 /* reduce user's txpower request if necessary
1163                  * for this rate on this channel */
1164                 target_power = user_target_power;
1165                 if (target_power > power_limit)
1166                         target_power = power_limit;
1167 
1168                 D_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n", i,
1169                           saturation_power - back_off_table[i],
1170                           current_regulatory, user_target_power, target_power);
1171 
1172                 /* for each of 2 Tx chains (radio transmitters) */
1173                 for (c = 0; c < 2; c++) {
1174                         s32 atten_value;
1175 
1176                         if (is_mimo_rate)
1177                                 atten_value =
1178                                     (s32) le32_to_cpu(il->card_alive_init.
1179                                                       tx_atten[txatten_grp][c]);
1180                         else
1181                                 atten_value = 0;
1182 
1183                         /* calculate idx; higher idx means lower txpower */
1184                         power_idx =
1185                             (u8) (factory_gain_idx[c] -
1186                                   (target_power - factory_actual_pwr[c]) -
1187                                   temperature_comp[c] - voltage_compensation +
1188                                   atten_value);
1189 
1190 /*                      D_TXPOWER("calculated txpower idx %d\n",
1191                                                 power_idx); */
1192 
1193                         if (power_idx < get_min_power_idx(i, band))
1194                                 power_idx = get_min_power_idx(i, band);
1195 
1196                         /* adjust 5 GHz idx to support negative idxes */
1197                         if (!band)
1198                                 power_idx += 9;
1199 
1200                         /* CCK, rate 32, reduce txpower for CCK */
1201                         if (i == POWER_TBL_CCK_ENTRY)
1202                                 power_idx +=
1203                                     IL_TX_POWER_CCK_COMPENSATION_C_STEP;
1204 
1205                         /* stay within the table! */
1206                         if (power_idx > 107) {
1207                                 IL_WARN("txpower idx %d > 107\n", power_idx);
1208                                 power_idx = 107;
1209                         }
1210                         if (power_idx < 0) {
1211                                 IL_WARN("txpower idx %d < 0\n", power_idx);
1212                                 power_idx = 0;
1213                         }
1214 
1215                         /* fill txpower command for this rate/chain */
1216                         tx_power.s.radio_tx_gain[c] =
1217                             gain_table[band][power_idx].radio;
1218                         tx_power.s.dsp_predis_atten[c] =
1219                             gain_table[band][power_idx].dsp;
1220 
1221                         D_TXPOWER("chain %d mimo %d idx %d "
1222                                   "gain 0x%02x dsp %d\n", c, atten_value,
1223                                   power_idx, tx_power.s.radio_tx_gain[c],
1224                                   tx_power.s.dsp_predis_atten[c]);
1225                 }               /* for each chain */
1226 
1227                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1228 
1229         }                       /* for each rate */
1230 
1231         return 0;
1232 }
1233 
1234 /**
1235  * il4965_send_tx_power - Configure the TXPOWER level user limit
1236  *
1237  * Uses the active RXON for channel, band, and characteristics (ht40, high)
1238  * The power limit is taken from il->tx_power_user_lmt.
1239  */
1240 static int
1241 il4965_send_tx_power(struct il_priv *il)
1242 {
1243         struct il4965_txpowertable_cmd cmd = { 0 };
1244         int ret;
1245         u8 band = 0;
1246         bool is_ht40 = false;
1247         u8 ctrl_chan_high = 0;
1248 
1249         if (WARN_ONCE
1250             (test_bit(S_SCAN_HW, &il->status),
1251              "TX Power requested while scanning!\n"))
1252                 return -EAGAIN;
1253 
1254         band = il->band == NL80211_BAND_2GHZ;
1255 
1256         is_ht40 = iw4965_is_ht40_channel(il->active.flags);
1257 
1258         if (is_ht40 && (il->active.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1259                 ctrl_chan_high = 1;
1260 
1261         cmd.band = band;
1262         cmd.channel = il->active.channel;
1263 
1264         ret =
1265             il4965_fill_txpower_tbl(il, band, le16_to_cpu(il->active.channel),
1266                                     is_ht40, ctrl_chan_high, &cmd.tx_power);
1267         if (ret)
1268                 goto out;
1269 
1270         ret = il_send_cmd_pdu(il, C_TX_PWR_TBL, sizeof(cmd), &cmd);
1271 
1272 out:
1273         return ret;
1274 }
1275 
1276 static int
1277 il4965_send_rxon_assoc(struct il_priv *il)
1278 {
1279         int ret = 0;
1280         struct il4965_rxon_assoc_cmd rxon_assoc;
1281         const struct il_rxon_cmd *rxon1 = &il->staging;
1282         const struct il_rxon_cmd *rxon2 = &il->active;
1283 
1284         lockdep_assert_held(&il->mutex);
1285 
1286         if (rxon1->flags == rxon2->flags &&
1287             rxon1->filter_flags == rxon2->filter_flags &&
1288             rxon1->cck_basic_rates == rxon2->cck_basic_rates &&
1289             rxon1->ofdm_ht_single_stream_basic_rates ==
1290             rxon2->ofdm_ht_single_stream_basic_rates &&
1291             rxon1->ofdm_ht_dual_stream_basic_rates ==
1292             rxon2->ofdm_ht_dual_stream_basic_rates &&
1293             rxon1->rx_chain == rxon2->rx_chain &&
1294             rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates) {
1295                 D_INFO("Using current RXON_ASSOC.  Not resending.\n");
1296                 return 0;
1297         }
1298 
1299         rxon_assoc.flags = il->staging.flags;
1300         rxon_assoc.filter_flags = il->staging.filter_flags;
1301         rxon_assoc.ofdm_basic_rates = il->staging.ofdm_basic_rates;
1302         rxon_assoc.cck_basic_rates = il->staging.cck_basic_rates;
1303         rxon_assoc.reserved = 0;
1304         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1305             il->staging.ofdm_ht_single_stream_basic_rates;
1306         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1307             il->staging.ofdm_ht_dual_stream_basic_rates;
1308         rxon_assoc.rx_chain_select_flags = il->staging.rx_chain;
1309 
1310         ret =
1311             il_send_cmd_pdu_async(il, C_RXON_ASSOC, sizeof(rxon_assoc),
1312                                   &rxon_assoc, NULL);
1313 
1314         return ret;
1315 }
1316 
1317 static int
1318 il4965_commit_rxon(struct il_priv *il)
1319 {
1320         /* cast away the const for active_rxon in this function */
1321         struct il_rxon_cmd *active_rxon = (void *)&il->active;
1322         int ret;
1323         bool new_assoc = !!(il->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
1324 
1325         if (!il_is_alive(il))
1326                 return -EBUSY;
1327 
1328         /* always get timestamp with Rx frame */
1329         il->staging.flags |= RXON_FLG_TSF2HOST_MSK;
1330 
1331         ret = il_check_rxon_cmd(il);
1332         if (ret) {
1333                 IL_ERR("Invalid RXON configuration.  Not committing.\n");
1334                 return -EINVAL;
1335         }
1336 
1337         /*
1338          * receive commit_rxon request
1339          * abort any previous channel switch if still in process
1340          */
1341         if (test_bit(S_CHANNEL_SWITCH_PENDING, &il->status) &&
1342             il->switch_channel != il->staging.channel) {
1343                 D_11H("abort channel switch on %d\n",
1344                       le16_to_cpu(il->switch_channel));
1345                 il_chswitch_done(il, false);
1346         }
1347 
1348         /* If we don't need to send a full RXON, we can use
1349          * il_rxon_assoc_cmd which is used to reconfigure filter
1350          * and other flags for the current radio configuration. */
1351         if (!il_full_rxon_required(il)) {
1352                 ret = il_send_rxon_assoc(il);
1353                 if (ret) {
1354                         IL_ERR("Error setting RXON_ASSOC (%d)\n", ret);
1355                         return ret;
1356                 }
1357 
1358                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1359                 il_print_rx_config_cmd(il);
1360                 /*
1361                  * We do not commit tx power settings while channel changing,
1362                  * do it now if tx power changed.
1363                  */
1364                 il_set_tx_power(il, il->tx_power_next, false);
1365                 return 0;
1366         }
1367 
1368         /* If we are currently associated and the new config requires
1369          * an RXON_ASSOC and the new config wants the associated mask enabled,
1370          * we must clear the associated from the active configuration
1371          * before we apply the new config */
1372         if (il_is_associated(il) && new_assoc) {
1373                 D_INFO("Toggling associated bit on current RXON\n");
1374                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1375 
1376                 ret =
1377                     il_send_cmd_pdu(il, C_RXON,
1378                                     sizeof(struct il_rxon_cmd), active_rxon);
1379 
1380                 /* If the mask clearing failed then we set
1381                  * active_rxon back to what it was previously */
1382                 if (ret) {
1383                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1384                         IL_ERR("Error clearing ASSOC_MSK (%d)\n", ret);
1385                         return ret;
1386                 }
1387                 il_clear_ucode_stations(il);
1388                 il_restore_stations(il);
1389                 ret = il4965_restore_default_wep_keys(il);
1390                 if (ret) {
1391                         IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1392                         return ret;
1393                 }
1394         }
1395 
1396         D_INFO("Sending RXON\n" "* with%s RXON_FILTER_ASSOC_MSK\n"
1397                "* channel = %d\n" "* bssid = %pM\n", (new_assoc ? "" : "out"),
1398                le16_to_cpu(il->staging.channel), il->staging.bssid_addr);
1399 
1400         il_set_rxon_hwcrypto(il, !il->cfg->mod_params->sw_crypto);
1401 
1402         /* Apply the new configuration
1403          * RXON unassoc clears the station table in uCode so restoration of
1404          * stations is needed after it (the RXON command) completes
1405          */
1406         if (!new_assoc) {
1407                 ret =
1408                     il_send_cmd_pdu(il, C_RXON,
1409                                     sizeof(struct il_rxon_cmd), &il->staging);
1410                 if (ret) {
1411                         IL_ERR("Error setting new RXON (%d)\n", ret);
1412                         return ret;
1413                 }
1414                 D_INFO("Return from !new_assoc RXON.\n");
1415                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1416                 il_clear_ucode_stations(il);
1417                 il_restore_stations(il);
1418                 ret = il4965_restore_default_wep_keys(il);
1419                 if (ret) {
1420                         IL_ERR("Failed to restore WEP keys (%d)\n", ret);
1421                         return ret;
1422                 }
1423         }
1424         if (new_assoc) {
1425                 il->start_calib = 0;
1426                 /* Apply the new configuration
1427                  * RXON assoc doesn't clear the station table in uCode,
1428                  */
1429                 ret =
1430                     il_send_cmd_pdu(il, C_RXON,
1431                                     sizeof(struct il_rxon_cmd), &il->staging);
1432                 if (ret) {
1433                         IL_ERR("Error setting new RXON (%d)\n", ret);
1434                         return ret;
1435                 }
1436                 memcpy(active_rxon, &il->staging, sizeof(*active_rxon));
1437         }
1438         il_print_rx_config_cmd(il);
1439 
1440         il4965_init_sensitivity(il);
1441 
1442         /* If we issue a new RXON command which required a tune then we must
1443          * send a new TXPOWER command or we won't be able to Tx any frames */
1444         ret = il_set_tx_power(il, il->tx_power_next, true);
1445         if (ret) {
1446                 IL_ERR("Error sending TX power (%d)\n", ret);
1447                 return ret;
1448         }
1449 
1450         return 0;
1451 }
1452 
1453 static int
1454 il4965_hw_channel_switch(struct il_priv *il,
1455                          struct ieee80211_channel_switch *ch_switch)
1456 {
1457         int rc;
1458         u8 band = 0;
1459         bool is_ht40 = false;
1460         u8 ctrl_chan_high = 0;
1461         struct il4965_channel_switch_cmd cmd;
1462         const struct il_channel_info *ch_info;
1463         u32 switch_time_in_usec, ucode_switch_time;
1464         u16 ch;
1465         u32 tsf_low;
1466         u8 switch_count;
1467         u16 beacon_interval = le16_to_cpu(il->timing.beacon_interval);
1468         struct ieee80211_vif *vif = il->vif;
1469         band = (il->band == NL80211_BAND_2GHZ);
1470 
1471         if (WARN_ON_ONCE(vif == NULL))
1472                 return -EIO;
1473 
1474         is_ht40 = iw4965_is_ht40_channel(il->staging.flags);
1475 
1476         if (is_ht40 && (il->staging.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1477                 ctrl_chan_high = 1;
1478 
1479         cmd.band = band;
1480         cmd.expect_beacon = 0;
1481         ch = ch_switch->chandef.chan->hw_value;
1482         cmd.channel = cpu_to_le16(ch);
1483         cmd.rxon_flags = il->staging.flags;
1484         cmd.rxon_filter_flags = il->staging.filter_flags;
1485         switch_count = ch_switch->count;
1486         tsf_low = ch_switch->timestamp & 0x0ffffffff;
1487         /*
1488          * calculate the ucode channel switch time
1489          * adding TSF as one of the factor for when to switch
1490          */
1491         if (il->ucode_beacon_time > tsf_low && beacon_interval) {
1492                 if (switch_count >
1493                     ((il->ucode_beacon_time - tsf_low) / beacon_interval)) {
1494                         switch_count -=
1495                             (il->ucode_beacon_time - tsf_low) / beacon_interval;
1496                 } else
1497                         switch_count = 0;
1498         }
1499         if (switch_count <= 1)
1500                 cmd.switch_time = cpu_to_le32(il->ucode_beacon_time);
1501         else {
1502                 switch_time_in_usec =
1503                     vif->bss_conf.beacon_int * switch_count * TIME_UNIT;
1504                 ucode_switch_time =
1505                     il_usecs_to_beacons(il, switch_time_in_usec,
1506                                         beacon_interval);
1507                 cmd.switch_time =
1508                     il_add_beacon_time(il, il->ucode_beacon_time,
1509                                        ucode_switch_time, beacon_interval);
1510         }
1511         D_11H("uCode time for the switch is 0x%x\n", cmd.switch_time);
1512         ch_info = il_get_channel_info(il, il->band, ch);
1513         if (ch_info)
1514                 cmd.expect_beacon = il_is_channel_radar(ch_info);
1515         else {
1516                 IL_ERR("invalid channel switch from %u to %u\n",
1517                        il->active.channel, ch);
1518                 return -EFAULT;
1519         }
1520 
1521         rc = il4965_fill_txpower_tbl(il, band, ch, is_ht40, ctrl_chan_high,
1522                                      &cmd.tx_power);
1523         if (rc) {
1524                 D_11H("error:%d  fill txpower_tbl\n", rc);
1525                 return rc;
1526         }
1527 
1528         return il_send_cmd_pdu(il, C_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1529 }
1530 
1531 /**
1532  * il4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1533  */
1534 static void
1535 il4965_txq_update_byte_cnt_tbl(struct il_priv *il, struct il_tx_queue *txq,
1536                                u16 byte_cnt)
1537 {
1538         struct il4965_scd_bc_tbl *scd_bc_tbl = il->scd_bc_tbls.addr;
1539         int txq_id = txq->q.id;
1540         int write_ptr = txq->q.write_ptr;
1541         int len = byte_cnt + IL_TX_CRC_SIZE + IL_TX_DELIMITER_SIZE;
1542         __le16 bc_ent;
1543 
1544         WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1545 
1546         bc_ent = cpu_to_le16(len & 0xFFF);
1547         /* Set up byte count within first 256 entries */
1548         scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1549 
1550         /* If within first 64 entries, duplicate at end */
1551         if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1552                 scd_bc_tbl[txq_id].tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] =
1553                     bc_ent;
1554 }
1555 
1556 /**
1557  * il4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1558  * @stats: Provides the temperature reading from the uCode
1559  *
1560  * A return of <0 indicates bogus data in the stats
1561  */
1562 static int
1563 il4965_hw_get_temperature(struct il_priv *il)
1564 {
1565         s32 temperature;
1566         s32 vt;
1567         s32 R1, R2, R3;
1568         u32 R4;
1569 
1570         if (test_bit(S_TEMPERATURE, &il->status) &&
1571             (il->_4965.stats.flag & STATS_REPLY_FLG_HT40_MODE_MSK)) {
1572                 D_TEMP("Running HT40 temperature calibration\n");
1573                 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[1]);
1574                 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[1]);
1575                 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[1]);
1576                 R4 = le32_to_cpu(il->card_alive_init.therm_r4[1]);
1577         } else {
1578                 D_TEMP("Running temperature calibration\n");
1579                 R1 = (s32) le32_to_cpu(il->card_alive_init.therm_r1[0]);
1580                 R2 = (s32) le32_to_cpu(il->card_alive_init.therm_r2[0]);
1581                 R3 = (s32) le32_to_cpu(il->card_alive_init.therm_r3[0]);
1582                 R4 = le32_to_cpu(il->card_alive_init.therm_r4[0]);
1583         }
1584 
1585         /*
1586          * Temperature is only 23 bits, so sign extend out to 32.
1587          *
1588          * NOTE If we haven't received a stats notification yet
1589          * with an updated temperature, use R4 provided to us in the
1590          * "initialize" ALIVE response.
1591          */
1592         if (!test_bit(S_TEMPERATURE, &il->status))
1593                 vt = sign_extend32(R4, 23);
1594         else
1595                 vt = sign_extend32(le32_to_cpu
1596                                    (il->_4965.stats.general.common.temperature),
1597                                    23);
1598 
1599         D_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1600 
1601         if (R3 == R1) {
1602                 IL_ERR("Calibration conflict R1 == R3\n");
1603                 return -1;
1604         }
1605 
1606         /* Calculate temperature in degrees Kelvin, adjust by 97%.
1607          * Add offset to center the adjustment around 0 degrees Centigrade. */
1608         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1609         temperature /= (R3 - R1);
1610         temperature =
1611             (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1612 
1613         D_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
1614                KELVIN_TO_CELSIUS(temperature));
1615 
1616         return temperature;
1617 }
1618 
1619 /* Adjust Txpower only if temperature variance is greater than threshold. */
1620 #define IL_TEMPERATURE_THRESHOLD   3
1621 
1622 /**
1623  * il4965_is_temp_calib_needed - determines if new calibration is needed
1624  *
1625  * If the temperature changed has changed sufficiently, then a recalibration
1626  * is needed.
1627  *
1628  * Assumes caller will replace il->last_temperature once calibration
1629  * executed.
1630  */
1631 static int
1632 il4965_is_temp_calib_needed(struct il_priv *il)
1633 {
1634         int temp_diff;
1635 
1636         if (!test_bit(S_STATS, &il->status)) {
1637                 D_TEMP("Temperature not updated -- no stats.\n");
1638                 return 0;
1639         }
1640 
1641         temp_diff = il->temperature - il->last_temperature;
1642 
1643         /* get absolute value */
1644         if (temp_diff < 0) {
1645                 D_POWER("Getting cooler, delta %d\n", temp_diff);
1646                 temp_diff = -temp_diff;
1647         } else if (temp_diff == 0)
1648                 D_POWER("Temperature unchanged\n");
1649         else
1650                 D_POWER("Getting warmer, delta %d\n", temp_diff);
1651 
1652         if (temp_diff < IL_TEMPERATURE_THRESHOLD) {
1653                 D_POWER(" => thermal txpower calib not needed\n");
1654                 return 0;
1655         }
1656 
1657         D_POWER(" => thermal txpower calib needed\n");
1658 
1659         return 1;
1660 }
1661 
1662 void
1663 il4965_temperature_calib(struct il_priv *il)
1664 {
1665         s32 temp;
1666 
1667         temp = il4965_hw_get_temperature(il);
1668         if (IL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(temp))
1669                 return;
1670 
1671         if (il->temperature != temp) {
1672                 if (il->temperature)
1673                         D_TEMP("Temperature changed " "from %dC to %dC\n",
1674                                KELVIN_TO_CELSIUS(il->temperature),
1675                                KELVIN_TO_CELSIUS(temp));
1676                 else
1677                         D_TEMP("Temperature " "initialized to %dC\n",
1678                                KELVIN_TO_CELSIUS(temp));
1679         }
1680 
1681         il->temperature = temp;
1682         set_bit(S_TEMPERATURE, &il->status);
1683 
1684         if (!il->disable_tx_power_cal &&
1685             unlikely(!test_bit(S_SCANNING, &il->status)) &&
1686             il4965_is_temp_calib_needed(il))
1687                 queue_work(il->workqueue, &il->txpower_work);
1688 }
1689 
1690 static u16
1691 il4965_get_hcmd_size(u8 cmd_id, u16 len)
1692 {
1693         switch (cmd_id) {
1694         case C_RXON:
1695                 return (u16) sizeof(struct il4965_rxon_cmd);
1696         default:
1697                 return len;
1698         }
1699 }
1700 
1701 static u16
1702 il4965_build_addsta_hcmd(const struct il_addsta_cmd *cmd, u8 * data)
1703 {
1704         struct il4965_addsta_cmd *addsta = (struct il4965_addsta_cmd *)data;
1705         addsta->mode = cmd->mode;
1706         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1707         memcpy(&addsta->key, &cmd->key, sizeof(struct il4965_keyinfo));
1708         addsta->station_flags = cmd->station_flags;
1709         addsta->station_flags_msk = cmd->station_flags_msk;
1710         addsta->tid_disable_tx = cmd->tid_disable_tx;
1711         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1712         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1713         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1714         addsta->sleep_tx_count = cmd->sleep_tx_count;
1715         addsta->reserved1 = cpu_to_le16(0);
1716         addsta->reserved2 = cpu_to_le16(0);
1717 
1718         return (u16) sizeof(struct il4965_addsta_cmd);
1719 }
1720 
1721 static void
1722 il4965_post_scan(struct il_priv *il)
1723 {
1724         /*
1725          * Since setting the RXON may have been deferred while
1726          * performing the scan, fire one off if needed
1727          */
1728         if (memcmp(&il->staging, &il->active, sizeof(il->staging)))
1729                 il_commit_rxon(il);
1730 }
1731 
1732 static void
1733 il4965_post_associate(struct il_priv *il)
1734 {
1735         struct ieee80211_vif *vif = il->vif;
1736         int ret = 0;
1737 
1738         if (!vif || !il->is_open)
1739                 return;
1740 
1741         if (test_bit(S_EXIT_PENDING, &il->status))
1742                 return;
1743 
1744         il_scan_cancel_timeout(il, 200);
1745 
1746         il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1747         il_commit_rxon(il);
1748 
1749         ret = il_send_rxon_timing(il);
1750         if (ret)
1751                 IL_WARN("RXON timing - " "Attempting to continue.\n");
1752 
1753         il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1754 
1755         il_set_rxon_ht(il, &il->current_ht_config);
1756 
1757         if (il->ops->set_rxon_chain)
1758                 il->ops->set_rxon_chain(il);
1759 
1760         il->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
1761 
1762         D_ASSOC("assoc id %d beacon interval %d\n", vif->bss_conf.aid,
1763                 vif->bss_conf.beacon_int);
1764 
1765         if (vif->bss_conf.use_short_preamble)
1766                 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1767         else
1768                 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1769 
1770         if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
1771                 if (vif->bss_conf.use_short_slot)
1772                         il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
1773                 else
1774                         il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1775         }
1776 
1777         il_commit_rxon(il);
1778 
1779         D_ASSOC("Associated as %d to: %pM\n", vif->bss_conf.aid,
1780                 il->active.bssid_addr);
1781 
1782         switch (vif->type) {
1783         case NL80211_IFTYPE_STATION:
1784                 break;
1785         case NL80211_IFTYPE_ADHOC:
1786                 il4965_send_beacon_cmd(il);
1787                 break;
1788         default:
1789                 IL_ERR("%s Should not be called in %d mode\n", __func__,
1790                        vif->type);
1791                 break;
1792         }
1793 
1794         /* the chain noise calibration will enabled PM upon completion
1795          * If chain noise has already been run, then we need to enable
1796          * power management here */
1797         if (il->chain_noise_data.state == IL_CHAIN_NOISE_DONE)
1798                 il_power_update_mode(il, false);
1799 
1800         /* Enable Rx differential gain and sensitivity calibrations */
1801         il4965_chain_noise_reset(il);
1802         il->start_calib = 1;
1803 }
1804 
1805 static void
1806 il4965_config_ap(struct il_priv *il)
1807 {
1808         struct ieee80211_vif *vif = il->vif;
1809         int ret = 0;
1810 
1811         lockdep_assert_held(&il->mutex);
1812 
1813         if (test_bit(S_EXIT_PENDING, &il->status))
1814                 return;
1815 
1816         /* The following should be done only at AP bring up */
1817         if (!il_is_associated(il)) {
1818 
1819                 /* RXON - unassoc (to set timing command) */
1820                 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1821                 il_commit_rxon(il);
1822 
1823                 /* RXON Timing */
1824                 ret = il_send_rxon_timing(il);
1825                 if (ret)
1826                         IL_WARN("RXON timing failed - "
1827                                 "Attempting to continue.\n");
1828 
1829                 /* AP has all antennas */
1830                 il->chain_noise_data.active_chains = il->hw_params.valid_rx_ant;
1831                 il_set_rxon_ht(il, &il->current_ht_config);
1832                 if (il->ops->set_rxon_chain)
1833                         il->ops->set_rxon_chain(il);
1834 
1835                 il->staging.assoc_id = 0;
1836 
1837                 if (vif->bss_conf.use_short_preamble)
1838                         il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1839                 else
1840                         il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1841 
1842                 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
1843                         if (vif->bss_conf.use_short_slot)
1844                                 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
1845                         else
1846                                 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1847                 }
1848                 /* need to send beacon cmd before committing assoc RXON! */
1849                 il4965_send_beacon_cmd(il);
1850                 /* restore RXON assoc */
1851                 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1852                 il_commit_rxon(il);
1853         }
1854         il4965_send_beacon_cmd(il);
1855 }
1856 
1857 const struct il_ops il4965_ops = {
1858         .txq_update_byte_cnt_tbl = il4965_txq_update_byte_cnt_tbl,
1859         .txq_attach_buf_to_tfd = il4965_hw_txq_attach_buf_to_tfd,
1860         .txq_free_tfd = il4965_hw_txq_free_tfd,
1861         .txq_init = il4965_hw_tx_queue_init,
1862         .is_valid_rtc_data_addr = il4965_hw_valid_rtc_data_addr,
1863         .init_alive_start = il4965_init_alive_start,
1864         .load_ucode = il4965_load_bsm,
1865         .dump_nic_error_log = il4965_dump_nic_error_log,
1866         .dump_fh = il4965_dump_fh,
1867         .set_channel_switch = il4965_hw_channel_switch,
1868         .apm_init = il_apm_init,
1869         .send_tx_power = il4965_send_tx_power,
1870         .update_chain_flags = il4965_update_chain_flags,
1871         .eeprom_acquire_semaphore = il4965_eeprom_acquire_semaphore,
1872         .eeprom_release_semaphore = il4965_eeprom_release_semaphore,
1873 
1874         .rxon_assoc = il4965_send_rxon_assoc,
1875         .commit_rxon = il4965_commit_rxon,
1876         .set_rxon_chain = il4965_set_rxon_chain,
1877 
1878         .get_hcmd_size = il4965_get_hcmd_size,
1879         .build_addsta_hcmd = il4965_build_addsta_hcmd,
1880         .request_scan = il4965_request_scan,
1881         .post_scan = il4965_post_scan,
1882 
1883         .post_associate = il4965_post_associate,
1884         .config_ap = il4965_config_ap,
1885         .manage_ibss_station = il4965_manage_ibss_station,
1886         .update_bcast_stations = il4965_update_bcast_stations,
1887 
1888         .send_led_cmd = il4965_send_led_cmd,
1889 };
1890 
1891 struct il_cfg il4965_cfg = {
1892         .name = "Intel(R) Wireless WiFi Link 4965AGN",
1893         .fw_name_pre = IL4965_FW_PRE,
1894         .ucode_api_max = IL4965_UCODE_API_MAX,
1895         .ucode_api_min = IL4965_UCODE_API_MIN,
1896         .sku = IL_SKU_A | IL_SKU_G | IL_SKU_N,
1897         .valid_tx_ant = ANT_AB,
1898         .valid_rx_ant = ANT_ABC,
1899         .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
1900         .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
1901         .mod_params = &il4965_mod_params,
1902         .led_mode = IL_LED_BLINK,
1903         /*
1904          * Force use of chains B and C for scan RX on 5 GHz band
1905          * because the device has off-channel reception on chain A.
1906          */
1907         .scan_rx_antennas[NL80211_BAND_5GHZ] = ANT_BC,
1908 
1909         .eeprom_size = IL4965_EEPROM_IMG_SIZE,
1910         .num_of_queues = IL49_NUM_QUEUES,
1911         .num_of_ampdu_queues = IL49_NUM_AMPDU_QUEUES,
1912         .pll_cfg_val = 0,
1913         .set_l0s = true,
1914         .use_bsm = true,
1915         .led_compensation = 61,
1916         .chain_noise_num_beacons = IL4965_CAL_NUM_BEACONS,
1917         .wd_timeout = IL_DEF_WD_TIMEOUT,
1918         .temperature_kelvin = true,
1919         .ucode_tracing = true,
1920         .sensitivity_calib_by_driver = true,
1921         .chain_noise_calib_by_driver = true,
1922 
1923         .regulatory_bands = {
1924                 EEPROM_REGULATORY_BAND_1_CHANNELS,
1925                 EEPROM_REGULATORY_BAND_2_CHANNELS,
1926                 EEPROM_REGULATORY_BAND_3_CHANNELS,
1927                 EEPROM_REGULATORY_BAND_4_CHANNELS,
1928                 EEPROM_REGULATORY_BAND_5_CHANNELS,
1929                 EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
1930                 EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
1931         },
1932 
1933 };
1934 
1935 /* Module firmware */
1936 MODULE_FIRMWARE(IL4965_MODULE_FIRMWARE(IL4965_UCODE_API_MAX));
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/intel/iwlegacy/4965.c

DEFINITIONS
