drivers/net/wireless/iwlwifi/iwl-4965.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2010 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 <linux/wireless.h>
  37 #include <net/mac80211.h>
  38 #include <linux/etherdevice.h>
  39 #include <asm/unaligned.h>
  40
  41 #include "iwl-eeprom.h"
  42 #include "iwl-dev.h"
  43 #include "iwl-core.h"
  44 #include "iwl-io.h"
  45 #include "iwl-helpers.h"
  46 #include "iwl-calib.h"
  47 #include "iwl-sta.h"
  48 #include "iwl-agn-led.h"
  49
  50 static int iwl4965_send_tx_power(struct iwl_priv *priv);
  51 static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
  52
  53 /* Highest firmware API version supported */
  54 #define IWL4965_UCODE_API_MAX 2
  55
  56 /* Lowest firmware API version supported */
  57 #define IWL4965_UCODE_API_MIN 2
  58
  59 #define IWL4965_FW_PRE "iwlwifi-4965-"
  60 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
  61 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
  62
  63
  64 /* module parameters */
  65 static struct iwl_mod_params iwl4965_mod_params = {
  66         .amsdu_size_8K = 1,
  67         .restart_fw = 1,
  68         /* the rest are 0 by default */
  69 };
  70
  71 /* check contents of special bootstrap uCode SRAM */
  72 static int iwl4965_verify_bsm(struct iwl_priv *priv)
  73 {
  74         __le32 *image = priv->ucode_boot.v_addr;
  75         u32 len = priv->ucode_boot.len;
  76         u32 reg;
  77         u32 val;
  78
  79         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
  80
  81         /* verify BSM SRAM contents */
  82         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
  83         for (reg = BSM_SRAM_LOWER_BOUND;
  84              reg < BSM_SRAM_LOWER_BOUND + len;
  85              reg += sizeof(u32), image++) {
  86                 val = iwl_read_prph(priv, reg);
  87                 if (val != le32_to_cpu(*image)) {
  88                         IWL_ERR(priv, "BSM uCode verification failed at "
  89                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
  90                                   BSM_SRAM_LOWER_BOUND,
  91                                   reg - BSM_SRAM_LOWER_BOUND, len,
  92                                   val, le32_to_cpu(*image));
  93                         return -EIO;
  94                 }
  95         }
  96
  97         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
  98
  99         return 0;
 100 }
 101
 102 /**
 103  * iwl4965_load_bsm - Load bootstrap instructions
 104  *
 105  * BSM operation:
 106  *
 107  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 108  * in special SRAM that does not power down during RFKILL.  When powering back
 109  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 110  * the bootstrap program into the on-board processor, and starts it.
 111  *
 112  * The bootstrap program loads (via DMA) instructions and data for a new
 113  * program from host DRAM locations indicated by the host driver in the
 114  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 115  * automatically.
 116  *
 117  * When initializing the NIC, the host driver points the BSM to the
 118  * "initialize" uCode image.  This uCode sets up some internal data, then
 119  * notifies host via "initialize alive" that it is complete.
 120  *
 121  * The host then replaces the BSM_DRAM_* pointer values to point to the
 122  * normal runtime uCode instructions and a backup uCode data cache buffer
 123  * (filled initially with starting data values for the on-board processor),
 124  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 125  * which begins normal operation.
 126  *
 127  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 128  * the backup data cache in DRAM before SRAM is powered down.
 129  *
 130  * When powering back up, the BSM loads the bootstrap program.  This reloads
 131  * the runtime uCode instructions and the backup data cache into SRAM,
 132  * and re-launches the runtime uCode from where it left off.
 133  */
 134 static int iwl4965_load_bsm(struct iwl_priv *priv)
 135 {
 136         __le32 *image = priv->ucode_boot.v_addr;
 137         u32 len = priv->ucode_boot.len;
 138         dma_addr_t pinst;
 139         dma_addr_t pdata;
 140         u32 inst_len;
 141         u32 data_len;
 142         int i;
 143         u32 done;
 144         u32 reg_offset;
 145         int ret;
 146
 147         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
 148
 149         priv->ucode_type = UCODE_RT;
 150
 151         /* make sure bootstrap program is no larger than BSM's SRAM size */
 152         if (len > IWL49_MAX_BSM_SIZE)
 153                 return -EINVAL;
 154
 155         /* Tell bootstrap uCode where to find the "Initialize" uCode
 156          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 157          * NOTE:  iwl_init_alive_start() will replace these values,
 158          *        after the "initialize" uCode has run, to point to
 159          *        runtime/protocol instructions and backup data cache.
 160          */
 161         pinst = priv->ucode_init.p_addr >> 4;
 162         pdata = priv->ucode_init_data.p_addr >> 4;
 163         inst_len = priv->ucode_init.len;
 164         data_len = priv->ucode_init_data.len;
 165
 166         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 167         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 168         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 169         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 170
 171         /* Fill BSM memory with bootstrap instructions */
 172         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 173              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 174              reg_offset += sizeof(u32), image++)
 175                 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
 176
 177         ret = iwl4965_verify_bsm(priv);
 178         if (ret)
 179                 return ret;
 180
 181         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 182         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
 183         iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND);
 184         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 185
 186         /* Load bootstrap code into instruction SRAM now,
 187          *   to prepare to load "initialize" uCode */
 188         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 189
 190         /* Wait for load of bootstrap uCode to finish */
 191         for (i = 0; i < 100; i++) {
 192                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
 193                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 194                         break;
 195                 udelay(10);
 196         }
 197         if (i < 100)
 198                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
 199         else {
 200                 IWL_ERR(priv, "BSM write did not complete!\n");
 201                 return -EIO;
 202         }
 203
 204         /* Enable future boot loads whenever power management unit triggers it
 205          *   (e.g. when powering back up after power-save shutdown) */
 206         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 207
 208
 209         return 0;
 210 }
 211
 212 /**
 213  * iwl4965_set_ucode_ptrs - Set uCode address location
 214  *
 215  * Tell initialization uCode where to find runtime uCode.
 216  *
 217  * BSM registers initially contain pointers to initialization uCode.
 218  * We need to replace them to load runtime uCode inst and data,
 219  * and to save runtime data when powering down.
 220  */
 221 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
 222 {
 223         dma_addr_t pinst;
 224         dma_addr_t pdata;
 225         int ret = 0;
 226
 227         /* bits 35:4 for 4965 */
 228         pinst = priv->ucode_code.p_addr >> 4;
 229         pdata = priv->ucode_data_backup.p_addr >> 4;
 230
 231         /* Tell bootstrap uCode where to find image to load */
 232         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 233         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 234         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
 235                                  priv->ucode_data.len);
 236
 237         /* Inst byte count must be last to set up, bit 31 signals uCode
 238          *   that all new ptr/size info is in place */
 239         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
 240                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
 241         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
 242
 243         return ret;
 244 }
 245
 246 /**
 247  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
 248  *
 249  * Called after REPLY_ALIVE notification received from "initialize" uCode.
 250  *
 251  * The 4965 "initialize" ALIVE reply contains calibration data for:
 252  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
 253  *   (3945 does not contain this data).
 254  *
 255  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 256 */
 257 static void iwl4965_init_alive_start(struct iwl_priv *priv)
 258 {
 259         /* Check alive response for "valid" sign from uCode */
 260         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
 261                 /* We had an error bringing up the hardware, so take it
 262                  * all the way back down so we can try again */
 263                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
 264                 goto restart;
 265         }
 266
 267         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 268          * This is a paranoid check, because we would not have gotten the
 269          * "initialize" alive if code weren't properly loaded.  */
 270         if (iwl_verify_ucode(priv)) {
 271                 /* Runtime instruction load was bad;
 272                  * take it all the way back down so we can try again */
 273                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
 274                 goto restart;
 275         }
 276
 277         /* Calculate temperature */
 278         priv->temperature = iwl4965_hw_get_temperature(priv);
 279
 280         /* Send pointers to protocol/runtime uCode image ... init code will
 281          * load and launch runtime uCode, which will send us another "Alive"
 282          * notification. */
 283         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 284         if (iwl4965_set_ucode_ptrs(priv)) {
 285                 /* Runtime instruction load won't happen;
 286                  * take it all the way back down so we can try again */
 287                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
 288                 goto restart;
 289         }
 290         return;
 291
 292 restart:
 293         queue_work(priv->workqueue, &priv->restart);
 294 }
 295
 296 static bool is_ht40_channel(__le32 rxon_flags)
 297 {
 298         int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK)
 299                                     >> RXON_FLG_CHANNEL_MODE_POS;
 300         return ((chan_mod == CHANNEL_MODE_PURE_40) ||
 301                   (chan_mod == CHANNEL_MODE_MIXED));
 302 }
 303
 304 /*
 305  * EEPROM handlers
 306  */
 307 static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv)
 308 {
 309         return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
 310 }
 311
 312 /*
 313  * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
 314  * must be called under priv->lock and mac access
 315  */
 316 static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask)
 317 {
 318         iwl_write_prph(priv, IWL49_SCD_TXFACT, mask);
 319 }
 320
 321 static void iwl4965_nic_config(struct iwl_priv *priv)
 322 {
 323         unsigned long flags;
 324         u16 radio_cfg;
 325
 326         spin_lock_irqsave(&priv->lock, flags);
 327
 328         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 329
 330         /* write radio config values to register */
 331         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 332                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 333                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 334                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 335                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 336
 337         /* set CSR_HW_CONFIG_REG for uCode use */
 338         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 339                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 340                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 341
 342         priv->calib_info = (struct iwl_eeprom_calib_info *)
 343                 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 344
 345         spin_unlock_irqrestore(&priv->lock, flags);
 346 }
 347
 348 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 349  * Called after every association, but this runs only once!
 350  *  ... once chain noise is calibrated the first time, it's good forever.  */
 351 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
 352 {
 353         struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
 354
 355         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 356                 struct iwl_calib_diff_gain_cmd cmd;
 357
 358                 memset(&cmd, 0, sizeof(cmd));
 359                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 360                 cmd.diff_gain_a = 0;
 361                 cmd.diff_gain_b = 0;
 362                 cmd.diff_gain_c = 0;
 363                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 364                                  sizeof(cmd), &cmd))
 365                         IWL_ERR(priv,
 366                                 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
 367                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 368                 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
 369         }
 370 }
 371
 372 static void iwl4965_gain_computation(struct iwl_priv *priv,
 373                 u32 *average_noise,
 374                 u16 min_average_noise_antenna_i,
 375                 u32 min_average_noise,
 376                 u8 default_chain)
 377 {
 378         int i, ret;
 379         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 380
 381         data->delta_gain_code[min_average_noise_antenna_i] = 0;
 382
 383         for (i = default_chain; i < NUM_RX_CHAINS; i++) {
 384                 s32 delta_g = 0;
 385
 386                 if (!(data->disconn_array[i]) &&
 387                     (data->delta_gain_code[i] ==
 388                              CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
 389                         delta_g = average_noise[i] - min_average_noise;
 390                         data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
 391                         data->delta_gain_code[i] =
 392                                 min(data->delta_gain_code[i],
 393                                 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 394
 395                         data->delta_gain_code[i] =
 396                                 (data->delta_gain_code[i] | (1 << 2));
 397                 } else {
 398                         data->delta_gain_code[i] = 0;
 399                 }
 400         }
 401         IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n",
 402                      data->delta_gain_code[0],
 403                      data->delta_gain_code[1],
 404                      data->delta_gain_code[2]);
 405
 406         /* Differential gain gets sent to uCode only once */
 407         if (!data->radio_write) {
 408                 struct iwl_calib_diff_gain_cmd cmd;
 409                 data->radio_write = 1;
 410
 411                 memset(&cmd, 0, sizeof(cmd));
 412                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 413                 cmd.diff_gain_a = data->delta_gain_code[0];
 414                 cmd.diff_gain_b = data->delta_gain_code[1];
 415                 cmd.diff_gain_c = data->delta_gain_code[2];
 416                 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 417                                       sizeof(cmd), &cmd);
 418                 if (ret)
 419                         IWL_DEBUG_CALIB(priv, "fail sending cmd "
 420                                      "REPLY_PHY_CALIBRATION_CMD \n");
 421
 422                 /* TODO we might want recalculate
 423                  * rx_chain in rxon cmd */
 424
 425                 /* Mark so we run this algo only once! */
 426                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 427         }
 428         data->chain_noise_a = 0;
 429         data->chain_noise_b = 0;
 430         data->chain_noise_c = 0;
 431         data->chain_signal_a = 0;
 432         data->chain_signal_b = 0;
 433         data->chain_signal_c = 0;
 434         data->beacon_count = 0;
 435 }
 436
 437 static void iwl4965_bg_txpower_work(struct work_struct *work)
 438 {
 439         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 440                         txpower_work);
 441
 442         /* If a scan happened to start before we got here
 443          * then just return; the statistics notification will
 444          * kick off another scheduled work to compensate for
 445          * any temperature delta we missed here. */
 446         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 447             test_bit(STATUS_SCANNING, &priv->status))
 448                 return;
 449
 450         mutex_lock(&priv->mutex);
 451
 452         /* Regardless of if we are associated, we must reconfigure the
 453          * TX power since frames can be sent on non-radar channels while
 454          * not associated */
 455         iwl4965_send_tx_power(priv);
 456
 457         /* Update last_temperature to keep is_calib_needed from running
 458          * when it isn't needed... */
 459         priv->last_temperature = priv->temperature;
 460
 461         mutex_unlock(&priv->mutex);
 462 }
 463
 464 /*
 465  * Acquire priv->lock before calling this function !
 466  */
 467 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
 468 {
 469         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
 470                              (index & 0xff) | (txq_id << 8));
 471         iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
 472 }
 473
 474 /**
 475  * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
 476  * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
 477  * @scd_retry: (1) Indicates queue will be used in aggregation mode
 478  *
 479  * NOTE:  Acquire priv->lock before calling this function !
 480  */
 481 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
 482                                         struct iwl_tx_queue *txq,
 483                                         int tx_fifo_id, int scd_retry)
 484 {
 485         int txq_id = txq->q.id;
 486
 487         /* Find out whether to activate Tx queue */
 488         int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0;
 489
 490         /* Set up and activate */
 491         iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
 492                          (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
 493                          (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
 494                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
 495                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
 496                          IWL49_SCD_QUEUE_STTS_REG_MSK);
 497
 498         txq->sched_retry = scd_retry;
 499
 500         IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n",
 501                        active ? "Activate" : "Deactivate",
 502                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
 503 }
 504
 505 static const s8 default_queue_to_tx_fifo[] = {
 506         IWL_TX_FIFO_VO,
 507         IWL_TX_FIFO_VI,
 508         IWL_TX_FIFO_BE,
 509         IWL_TX_FIFO_BK,
 510         IWL49_CMD_FIFO_NUM,
 511         IWL_TX_FIFO_UNUSED,
 512         IWL_TX_FIFO_UNUSED,
 513 };
 514
 515 static int iwl4965_alive_notify(struct iwl_priv *priv)
 516 {
 517         u32 a;
 518         unsigned long flags;
 519         int i, chan;
 520         u32 reg_val;
 521
 522         spin_lock_irqsave(&priv->lock, flags);
 523
 524         /* Clear 4965's internal Tx Scheduler data base */
 525         priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
 526         a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
 527         for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
 528                 iwl_write_targ_mem(priv, a, 0);
 529         for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
 530                 iwl_write_targ_mem(priv, a, 0);
 531         for (; a < priv->scd_base_addr +
 532                IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4)
 533                 iwl_write_targ_mem(priv, a, 0);
 534
 535         /* Tel 4965 where to find Tx byte count tables */
 536         iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
 537                         priv->scd_bc_tbls.dma >> 10);
 538
 539         /* Enable DMA channel */
 540         for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++)
 541                 iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
 542                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
 543                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
 544
 545         /* Update FH chicken bits */
 546         reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG);
 547         iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG,
 548                            reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
 549
 550         /* Disable chain mode for all queues */
 551         iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
 552
 553         /* Initialize each Tx queue (including the command queue) */
 554         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
 555
 556                 /* TFD circular buffer read/write indexes */
 557                 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
 558                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
 559
 560                 /* Max Tx Window size for Scheduler-ACK mode */
 561                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 562                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
 563                                 (SCD_WIN_SIZE <<
 564                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
 565                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
 566
 567                 /* Frame limit */
 568                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 569                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
 570                                 sizeof(u32),
 571                                 (SCD_FRAME_LIMIT <<
 572                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 573                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
 574
 575         }
 576         iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
 577                                  (1 << priv->hw_params.max_txq_num) - 1);
 578
 579         /* Activate all Tx DMA/FIFO channels */
 580         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6));
 581
 582         iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 583
 584         /* make sure all queue are not stopped */
 585         memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped));
 586         for (i = 0; i < 4; i++)
 587                 atomic_set(&priv->queue_stop_count[i], 0);
 588
 589         /* reset to 0 to enable all the queue first */
 590         priv->txq_ctx_active_msk = 0;
 591         /* Map each Tx/cmd queue to its corresponding fifo */
 592         BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo) != 7);
 593         for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
 594                 int ac = default_queue_to_tx_fifo[i];
 595
 596                 iwl_txq_ctx_activate(priv, i);
 597
 598                 if (ac == IWL_TX_FIFO_UNUSED)
 599                         continue;
 600
 601                 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
 602         }
 603
 604         spin_unlock_irqrestore(&priv->lock, flags);
 605
 606         return 0;
 607 }
 608
 609 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
 610         .min_nrg_cck = 97,
 611         .max_nrg_cck = 0, /* not used, set to 0 */
 612
 613         .auto_corr_min_ofdm = 85,
 614         .auto_corr_min_ofdm_mrc = 170,
 615         .auto_corr_min_ofdm_x1 = 105,
 616         .auto_corr_min_ofdm_mrc_x1 = 220,
 617
 618         .auto_corr_max_ofdm = 120,
 619         .auto_corr_max_ofdm_mrc = 210,
 620         .auto_corr_max_ofdm_x1 = 140,
 621         .auto_corr_max_ofdm_mrc_x1 = 270,
 622
 623         .auto_corr_min_cck = 125,
 624         .auto_corr_max_cck = 200,
 625         .auto_corr_min_cck_mrc = 200,
 626         .auto_corr_max_cck_mrc = 400,
 627
 628         .nrg_th_cck = 100,
 629         .nrg_th_ofdm = 100,
 630
 631         .barker_corr_th_min = 190,
 632         .barker_corr_th_min_mrc = 390,
 633         .nrg_th_cca = 62,
 634 };
 635
 636 static void iwl4965_set_ct_threshold(struct iwl_priv *priv)
 637 {
 638         /* want Kelvin */
 639         priv->hw_params.ct_kill_threshold =
 640                 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
 641 }
 642
 643 /**
 644  * iwl4965_hw_set_hw_params
 645  *
 646  * Called when initializing driver
 647  */
 648 static int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
 649 {
 650         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
 651             priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES)
 652                 priv->cfg->num_of_queues =
 653                         priv->cfg->mod_params->num_of_queues;
 654
 655         priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
 656         priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM;
 657         priv->hw_params.scd_bc_tbls_size =
 658                         priv->cfg->num_of_queues *
 659                         sizeof(struct iwl4965_scd_bc_tbl);
 660         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 661         priv->hw_params.max_stations = IWL4965_STATION_COUNT;
 662         priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
 663         priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
 664         priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
 665         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
 666         priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ);
 667
 668         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 669
 670         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 671         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 672         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 673         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 674         if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
 675                 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
 676
 677         priv->hw_params.sens = &iwl4965_sensitivity;
 678
 679         return 0;
 680 }
 681
 682 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
 683 {
 684         s32 sign = 1;
 685
 686         if (num < 0) {
 687                 sign = -sign;
 688                 num = -num;
 689         }
 690         if (denom < 0) {
 691                 sign = -sign;
 692                 denom = -denom;
 693         }
 694         *res = 1;
 695         *res = ((num * 2 + denom) / (denom * 2)) * sign;
 696
 697         return 1;
 698 }
 699
 700 /**
 701  * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
 702  *
 703  * Determines power supply voltage compensation for txpower calculations.
 704  * Returns number of 1/2-dB steps to subtract from gain table index,
 705  * to compensate for difference between power supply voltage during
 706  * factory measurements, vs. current power supply voltage.
 707  *
 708  * Voltage indication is higher for lower voltage.
 709  * Lower voltage requires more gain (lower gain table index).
 710  */
 711 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
 712                                             s32 current_voltage)
 713 {
 714         s32 comp = 0;
 715
 716         if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
 717             (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
 718                 return 0;
 719
 720         iwl4965_math_div_round(current_voltage - eeprom_voltage,
 721                                TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
 722
 723         if (current_voltage > eeprom_voltage)
 724                 comp *= 2;
 725         if ((comp < -2) || (comp > 2))
 726                 comp = 0;
 727
 728         return comp;
 729 }
 730
 731 static s32 iwl4965_get_tx_atten_grp(u16 channel)
 732 {
 733         if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
 734             channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
 735                 return CALIB_CH_GROUP_5;
 736
 737         if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
 738             channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
 739                 return CALIB_CH_GROUP_1;
 740
 741         if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
 742             channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
 743                 return CALIB_CH_GROUP_2;
 744
 745         if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
 746             channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
 747                 return CALIB_CH_GROUP_3;
 748
 749         if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
 750             channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
 751                 return CALIB_CH_GROUP_4;
 752
 753         return -1;
 754 }
 755
 756 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
 757 {
 758         s32 b = -1;
 759
 760         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
 761                 if (priv->calib_info->band_info[b].ch_from == 0)
 762                         continue;
 763
 764                 if ((channel >= priv->calib_info->band_info[b].ch_from)
 765                     && (channel <= priv->calib_info->band_info[b].ch_to))
 766                         break;
 767         }
 768
 769         return b;
 770 }
 771
 772 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
 773 {
 774         s32 val;
 775
 776         if (x2 == x1)
 777                 return y1;
 778         else {
 779                 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
 780                 return val + y2;
 781         }
 782 }
 783
 784 /**
 785  * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
 786  *
 787  * Interpolates factory measurements from the two sample channels within a
 788  * sub-band, to apply to channel of interest.  Interpolation is proportional to
 789  * differences in channel frequencies, which is proportional to differences
 790  * in channel number.
 791  */
 792 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
 793                                     struct iwl_eeprom_calib_ch_info *chan_info)
 794 {
 795         s32 s = -1;
 796         u32 c;
 797         u32 m;
 798         const struct iwl_eeprom_calib_measure *m1;
 799         const struct iwl_eeprom_calib_measure *m2;
 800         struct iwl_eeprom_calib_measure *omeas;
 801         u32 ch_i1;
 802         u32 ch_i2;
 803
 804         s = iwl4965_get_sub_band(priv, channel);
 805         if (s >= EEPROM_TX_POWER_BANDS) {
 806                 IWL_ERR(priv, "Tx Power can not find channel %d\n", channel);
 807                 return -1;
 808         }
 809
 810         ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
 811         ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
 812         chan_info->ch_num = (u8) channel;
 813
 814         IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n",
 815                           channel, s, ch_i1, ch_i2);
 816
 817         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
 818                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
 819                         m1 = &(priv->calib_info->band_info[s].ch1.
 820                                measurements[c][m]);
 821                         m2 = &(priv->calib_info->band_info[s].ch2.
 822                                measurements[c][m]);
 823                         omeas = &(chan_info->measurements[c][m]);
 824
 825                         omeas->actual_pow =
 826                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 827                                                            m1->actual_pow,
 828                                                            ch_i2,
 829                                                            m2->actual_pow);
 830                         omeas->gain_idx =
 831                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 832                                                            m1->gain_idx, ch_i2,
 833                                                            m2->gain_idx);
 834                         omeas->temperature =
 835                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 836                                                            m1->temperature,
 837                                                            ch_i2,
 838                                                            m2->temperature);
 839                         omeas->pa_det =
 840                             (s8) iwl4965_interpolate_value(channel, ch_i1,
 841                                                            m1->pa_det, ch_i2,
 842                                                            m2->pa_det);
 843
 844                         IWL_DEBUG_TXPOWER(priv,
 845                                 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
 846                                 m1->actual_pow, m2->actual_pow, omeas->actual_pow);
 847                         IWL_DEBUG_TXPOWER(priv,
 848                                 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
 849                                 m1->gain_idx, m2->gain_idx, omeas->gain_idx);
 850                         IWL_DEBUG_TXPOWER(priv,
 851                                 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
 852                                 m1->pa_det, m2->pa_det, omeas->pa_det);
 853                         IWL_DEBUG_TXPOWER(priv,
 854                                 "chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
 855                                 m1->temperature, m2->temperature,
 856                                 omeas->temperature);
 857                 }
 858         }
 859
 860         return 0;
 861 }
 862
 863 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
 864  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
 865 static s32 back_off_table[] = {
 866         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
 867         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
 868         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
 869         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
 870         10                      /* CCK */
 871 };
 872
 873 /* Thermal compensation values for txpower for various frequency ranges ...
 874  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
 875 static struct iwl4965_txpower_comp_entry {
 876         s32 degrees_per_05db_a;
 877         s32 degrees_per_05db_a_denom;
 878 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
 879         {9, 2},                 /* group 0 5.2, ch  34-43 */
 880         {4, 1},                 /* group 1 5.2, ch  44-70 */
 881         {4, 1},                 /* group 2 5.2, ch  71-124 */
 882         {4, 1},                 /* group 3 5.2, ch 125-200 */
 883         {3, 1}                  /* group 4 2.4, ch   all */
 884 };
 885
 886 static s32 get_min_power_index(s32 rate_power_index, u32 band)
 887 {
 888         if (!band) {
 889                 if ((rate_power_index & 7) <= 4)
 890                         return MIN_TX_GAIN_INDEX_52GHZ_EXT;
 891         }
 892         return MIN_TX_GAIN_INDEX;
 893 }
 894
 895 struct gain_entry {
 896         u8 dsp;
 897         u8 radio;
 898 };
 899
 900 static const struct gain_entry gain_table[2][108] = {
 901         /* 5.2GHz power gain index table */
 902         {
 903          {123, 0x3F},           /* highest txpower */
 904          {117, 0x3F},
 905          {110, 0x3F},
 906          {104, 0x3F},
 907          {98, 0x3F},
 908          {110, 0x3E},
 909          {104, 0x3E},
 910          {98, 0x3E},
 911          {110, 0x3D},
 912          {104, 0x3D},
 913          {98, 0x3D},
 914          {110, 0x3C},
 915          {104, 0x3C},
 916          {98, 0x3C},
 917          {110, 0x3B},
 918          {104, 0x3B},
 919          {98, 0x3B},
 920          {110, 0x3A},
 921          {104, 0x3A},
 922          {98, 0x3A},
 923          {110, 0x39},
 924          {104, 0x39},
 925          {98, 0x39},
 926          {110, 0x38},
 927          {104, 0x38},
 928          {98, 0x38},
 929          {110, 0x37},
 930          {104, 0x37},
 931          {98, 0x37},
 932          {110, 0x36},
 933          {104, 0x36},
 934          {98, 0x36},
 935          {110, 0x35},
 936          {104, 0x35},
 937          {98, 0x35},
 938          {110, 0x34},
 939          {104, 0x34},
 940          {98, 0x34},
 941          {110, 0x33},
 942          {104, 0x33},
 943          {98, 0x33},
 944          {110, 0x32},
 945          {104, 0x32},
 946          {98, 0x32},
 947          {110, 0x31},
 948          {104, 0x31},
 949          {98, 0x31},
 950          {110, 0x30},
 951          {104, 0x30},
 952          {98, 0x30},
 953          {110, 0x25},
 954          {104, 0x25},
 955          {98, 0x25},
 956          {110, 0x24},
 957          {104, 0x24},
 958          {98, 0x24},
 959          {110, 0x23},
 960          {104, 0x23},
 961          {98, 0x23},
 962          {110, 0x22},
 963          {104, 0x18},
 964          {98, 0x18},
 965          {110, 0x17},
 966          {104, 0x17},
 967          {98, 0x17},
 968          {110, 0x16},
 969          {104, 0x16},
 970          {98, 0x16},
 971          {110, 0x15},
 972          {104, 0x15},
 973          {98, 0x15},
 974          {110, 0x14},
 975          {104, 0x14},
 976          {98, 0x14},
 977          {110, 0x13},
 978          {104, 0x13},
 979          {98, 0x13},
 980          {110, 0x12},
 981          {104, 0x08},
 982          {98, 0x08},
 983          {110, 0x07},
 984          {104, 0x07},
 985          {98, 0x07},
 986          {110, 0x06},
 987          {104, 0x06},
 988          {98, 0x06},
 989          {110, 0x05},
 990          {104, 0x05},
 991          {98, 0x05},
 992          {110, 0x04},
 993          {104, 0x04},
 994          {98, 0x04},
 995          {110, 0x03},
 996          {104, 0x03},
 997          {98, 0x03},
 998          {110, 0x02},
 999          {104, 0x02},
1000          {98, 0x02},
1001          {110, 0x01},
1002          {104, 0x01},
1003          {98, 0x01},
1004          {110, 0x00},
1005          {104, 0x00},
1006          {98, 0x00},
1007          {93, 0x00},
1008          {88, 0x00},
1009          {83, 0x00},
1010          {78, 0x00},
1011          },
1012         /* 2.4GHz power gain index table */
1013         {
1014          {110, 0x3f},           /* highest txpower */
1015          {104, 0x3f},
1016          {98, 0x3f},
1017          {110, 0x3e},
1018          {104, 0x3e},
1019          {98, 0x3e},
1020          {110, 0x3d},
1021          {104, 0x3d},
1022          {98, 0x3d},
1023          {110, 0x3c},
1024          {104, 0x3c},
1025          {98, 0x3c},
1026          {110, 0x3b},
1027          {104, 0x3b},
1028          {98, 0x3b},
1029          {110, 0x3a},
1030          {104, 0x3a},
1031          {98, 0x3a},
1032          {110, 0x39},
1033          {104, 0x39},
1034          {98, 0x39},
1035          {110, 0x38},
1036          {104, 0x38},
1037          {98, 0x38},
1038          {110, 0x37},
1039          {104, 0x37},
1040          {98, 0x37},
1041          {110, 0x36},
1042          {104, 0x36},
1043          {98, 0x36},
1044          {110, 0x35},
1045          {104, 0x35},
1046          {98, 0x35},
1047          {110, 0x34},
1048          {104, 0x34},
1049          {98, 0x34},
1050          {110, 0x33},
1051          {104, 0x33},
1052          {98, 0x33},
1053          {110, 0x32},
1054          {104, 0x32},
1055          {98, 0x32},
1056          {110, 0x31},
1057          {104, 0x31},
1058          {98, 0x31},
1059          {110, 0x30},
1060          {104, 0x30},
1061          {98, 0x30},
1062          {110, 0x6},
1063          {104, 0x6},
1064          {98, 0x6},
1065          {110, 0x5},
1066          {104, 0x5},
1067          {98, 0x5},
1068          {110, 0x4},
1069          {104, 0x4},
1070          {98, 0x4},
1071          {110, 0x3},
1072          {104, 0x3},
1073          {98, 0x3},
1074          {110, 0x2},
1075          {104, 0x2},
1076          {98, 0x2},
1077          {110, 0x1},
1078          {104, 0x1},
1079          {98, 0x1},
1080          {110, 0x0},
1081          {104, 0x0},
1082          {98, 0x0},
1083          {97, 0},
1084          {96, 0},
1085          {95, 0},
1086          {94, 0},
1087          {93, 0},
1088          {92, 0},
1089          {91, 0},
1090          {90, 0},
1091          {89, 0},
1092          {88, 0},
1093          {87, 0},
1094          {86, 0},
1095          {85, 0},
1096          {84, 0},
1097          {83, 0},
1098          {82, 0},
1099          {81, 0},
1100          {80, 0},
1101          {79, 0},
1102          {78, 0},
1103          {77, 0},
1104          {76, 0},
1105          {75, 0},
1106          {74, 0},
1107          {73, 0},
1108          {72, 0},
1109          {71, 0},
1110          {70, 0},
1111          {69, 0},
1112          {68, 0},
1113          {67, 0},
1114          {66, 0},
1115          {65, 0},
1116          {64, 0},
1117          {63, 0},
1118          {62, 0},
1119          {61, 0},
1120          {60, 0},
1121          {59, 0},
1122          }
1123 };
1124
1125 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1126                                     u8 is_ht40, u8 ctrl_chan_high,
1127                                     struct iwl4965_tx_power_db *tx_power_tbl)
1128 {
1129         u8 saturation_power;
1130         s32 target_power;
1131         s32 user_target_power;
1132         s32 power_limit;
1133         s32 current_temp;
1134         s32 reg_limit;
1135         s32 current_regulatory;
1136         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1137         int i;
1138         int c;
1139         const struct iwl_channel_info *ch_info = NULL;
1140         struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1141         const struct iwl_eeprom_calib_measure *measurement;
1142         s16 voltage;
1143         s32 init_voltage;
1144         s32 voltage_compensation;
1145         s32 degrees_per_05db_num;
1146         s32 degrees_per_05db_denom;
1147         s32 factory_temp;
1148         s32 temperature_comp[2];
1149         s32 factory_gain_index[2];
1150         s32 factory_actual_pwr[2];
1151         s32 power_index;
1152
1153         /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1154          *   are used for indexing into txpower table) */
1155         user_target_power = 2 * priv->tx_power_user_lmt;
1156
1157         /* Get current (RXON) channel, band, width */
1158         IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band,
1159                           is_ht40);
1160
1161         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1162
1163         if (!is_channel_valid(ch_info))
1164                 return -EINVAL;
1165
1166         /* get txatten group, used to select 1) thermal txpower adjustment
1167          *   and 2) mimo txpower balance between Tx chains. */
1168         txatten_grp = iwl4965_get_tx_atten_grp(channel);
1169         if (txatten_grp < 0) {
1170                 IWL_ERR(priv, "Can't find txatten group for channel %d.\n",
1171                           channel);
1172                 return -EINVAL;
1173         }
1174
1175         IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n",
1176                           channel, txatten_grp);
1177
1178         if (is_ht40) {
1179                 if (ctrl_chan_high)
1180                         channel -= 2;
1181                 else
1182                         channel += 2;
1183         }
1184
1185         /* hardware txpower limits ...
1186          * saturation (clipping distortion) txpowers are in half-dBm */
1187         if (band)
1188                 saturation_power = priv->calib_info->saturation_power24;
1189         else
1190                 saturation_power = priv->calib_info->saturation_power52;
1191
1192         if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1193             saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1194                 if (band)
1195                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1196                 else
1197                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1198         }
1199
1200         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1201          *   max_power_avg values are in dBm, convert * 2 */
1202         if (is_ht40)
1203                 reg_limit = ch_info->ht40_max_power_avg * 2;
1204         else
1205                 reg_limit = ch_info->max_power_avg * 2;
1206
1207         if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1208             (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1209                 if (band)
1210                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1211                 else
1212                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1213         }
1214
1215         /* Interpolate txpower calibration values for this channel,
1216          *   based on factory calibration tests on spaced channels. */
1217         iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1218
1219         /* calculate tx gain adjustment based on power supply voltage */
1220         voltage = le16_to_cpu(priv->calib_info->voltage);
1221         init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1222         voltage_compensation =
1223             iwl4965_get_voltage_compensation(voltage, init_voltage);
1224
1225         IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n",
1226                           init_voltage,
1227                           voltage, voltage_compensation);
1228
1229         /* get current temperature (Celsius) */
1230         current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1231         current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1232         current_temp = KELVIN_TO_CELSIUS(current_temp);
1233
1234         /* select thermal txpower adjustment params, based on channel group
1235          *   (same frequency group used for mimo txatten adjustment) */
1236         degrees_per_05db_num =
1237             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1238         degrees_per_05db_denom =
1239             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1240
1241         /* get per-chain txpower values from factory measurements */
1242         for (c = 0; c < 2; c++) {
1243                 measurement = &ch_eeprom_info.measurements[c][1];
1244
1245                 /* txgain adjustment (in half-dB steps) based on difference
1246                  *   between factory and current temperature */
1247                 factory_temp = measurement->temperature;
1248                 iwl4965_math_div_round((current_temp - factory_temp) *
1249                                        degrees_per_05db_denom,
1250                                        degrees_per_05db_num,
1251                                        &temperature_comp[c]);
1252
1253                 factory_gain_index[c] = measurement->gain_idx;
1254                 factory_actual_pwr[c] = measurement->actual_pow;
1255
1256                 IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c);
1257                 IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, "
1258                                   "curr tmp %d, comp %d steps\n",
1259                                   factory_temp, current_temp,
1260                                   temperature_comp[c]);
1261
1262                 IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n",
1263                                   factory_gain_index[c],
1264                                   factory_actual_pwr[c]);
1265         }
1266
1267         /* for each of 33 bit-rates (including 1 for CCK) */
1268         for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1269                 u8 is_mimo_rate;
1270                 union iwl4965_tx_power_dual_stream tx_power;
1271
1272                 /* for mimo, reduce each chain's txpower by half
1273                  * (3dB, 6 steps), so total output power is regulatory
1274                  * compliant. */
1275                 if (i & 0x8) {
1276                         current_regulatory = reg_limit -
1277                             IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1278                         is_mimo_rate = 1;
1279                 } else {
1280                         current_regulatory = reg_limit;
1281                         is_mimo_rate = 0;
1282                 }
1283
1284                 /* find txpower limit, either hardware or regulatory */
1285                 power_limit = saturation_power - back_off_table[i];
1286                 if (power_limit > current_regulatory)
1287                         power_limit = current_regulatory;
1288
1289                 /* reduce user's txpower request if necessary
1290                  * for this rate on this channel */
1291                 target_power = user_target_power;
1292                 if (target_power > power_limit)
1293                         target_power = power_limit;
1294
1295                 IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n",
1296                                   i, saturation_power - back_off_table[i],
1297                                   current_regulatory, user_target_power,
1298                                   target_power);
1299
1300                 /* for each of 2 Tx chains (radio transmitters) */
1301                 for (c = 0; c < 2; c++) {
1302                         s32 atten_value;
1303
1304                         if (is_mimo_rate)
1305                                 atten_value =
1306                                     (s32)le32_to_cpu(priv->card_alive_init.
1307                                     tx_atten[txatten_grp][c]);
1308                         else
1309                                 atten_value = 0;
1310
1311                         /* calculate index; higher index means lower txpower */
1312                         power_index = (u8) (factory_gain_index[c] -
1313                                             (target_power -
1314                                              factory_actual_pwr[c]) -
1315                                             temperature_comp[c] -
1316                                             voltage_compensation +
1317                                             atten_value);
1318
1319 /*                      IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1320                                                 power_index); */
1321
1322                         if (power_index < get_min_power_index(i, band))
1323                                 power_index = get_min_power_index(i, band);
1324
1325                         /* adjust 5 GHz index to support negative indexes */
1326                         if (!band)
1327                                 power_index += 9;
1328
1329                         /* CCK, rate 32, reduce txpower for CCK */
1330                         if (i == POWER_TABLE_CCK_ENTRY)
1331                                 power_index +=
1332                                     IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1333
1334                         /* stay within the table! */
1335                         if (power_index > 107) {
1336                                 IWL_WARN(priv, "txpower index %d > 107\n",
1337                                             power_index);
1338                                 power_index = 107;
1339                         }
1340                         if (power_index < 0) {
1341                                 IWL_WARN(priv, "txpower index %d < 0\n",
1342                                             power_index);
1343                                 power_index = 0;
1344                         }
1345
1346                         /* fill txpower command for this rate/chain */
1347                         tx_power.s.radio_tx_gain[c] =
1348                                 gain_table[band][power_index].radio;
1349                         tx_power.s.dsp_predis_atten[c] =
1350                                 gain_table[band][power_index].dsp;
1351
1352                         IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d "
1353                                           "gain 0x%02x dsp %d\n",
1354                                           c, atten_value, power_index,
1355                                         tx_power.s.radio_tx_gain[c],
1356                                         tx_power.s.dsp_predis_atten[c]);
1357                 } /* for each chain */
1358
1359                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1360
1361         } /* for each rate */
1362
1363         return 0;
1364 }
1365
1366 /**
1367  * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1368  *
1369  * Uses the active RXON for channel, band, and characteristics (ht40, high)
1370  * The power limit is taken from priv->tx_power_user_lmt.
1371  */
1372 static int iwl4965_send_tx_power(struct iwl_priv *priv)
1373 {
1374         struct iwl4965_txpowertable_cmd cmd = { 0 };
1375         int ret;
1376         u8 band = 0;
1377         bool is_ht40 = false;
1378         u8 ctrl_chan_high = 0;
1379
1380         if (test_bit(STATUS_SCANNING, &priv->status)) {
1381                 /* If this gets hit a lot, switch it to a BUG() and catch
1382                  * the stack trace to find out who is calling this during
1383                  * a scan. */
1384                 IWL_WARN(priv, "TX Power requested while scanning!\n");
1385                 return -EAGAIN;
1386         }
1387
1388         band = priv->band == IEEE80211_BAND_2GHZ;
1389
1390         is_ht40 =  is_ht40_channel(priv->active_rxon.flags);
1391
1392         if (is_ht40 &&
1393             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1394                 ctrl_chan_high = 1;
1395
1396         cmd.band = band;
1397         cmd.channel = priv->active_rxon.channel;
1398
1399         ret = iwl4965_fill_txpower_tbl(priv, band,
1400                                 le16_to_cpu(priv->active_rxon.channel),
1401                                 is_ht40, ctrl_chan_high, &cmd.tx_power);
1402         if (ret)
1403                 goto out;
1404
1405         ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1406
1407 out:
1408         return ret;
1409 }
1410
1411 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1412 {
1413         int ret = 0;
1414         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1415         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1416         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1417
1418         if ((rxon1->flags == rxon2->flags) &&
1419             (rxon1->filter_flags == rxon2->filter_flags) &&
1420             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1421             (rxon1->ofdm_ht_single_stream_basic_rates ==
1422              rxon2->ofdm_ht_single_stream_basic_rates) &&
1423             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1424              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1425             (rxon1->rx_chain == rxon2->rx_chain) &&
1426             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1427                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1428                 return 0;
1429         }
1430
1431         rxon_assoc.flags = priv->staging_rxon.flags;
1432         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1433         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1434         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1435         rxon_assoc.reserved = 0;
1436         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1437             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1438         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1439             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1440         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1441
1442         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1443                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1444         if (ret)
1445                 return ret;
1446
1447         return ret;
1448 }
1449
1450 static int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1451 {
1452         int rc;
1453         u8 band = 0;
1454         bool is_ht40 = false;
1455         u8 ctrl_chan_high = 0;
1456         struct iwl4965_channel_switch_cmd cmd;
1457         const struct iwl_channel_info *ch_info;
1458
1459         band = priv->band == IEEE80211_BAND_2GHZ;
1460
1461         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1462
1463         is_ht40 = is_ht40_channel(priv->staging_rxon.flags);
1464
1465         if (is_ht40 &&
1466             (priv->staging_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1467                 ctrl_chan_high = 1;
1468
1469         cmd.band = band;
1470         cmd.expect_beacon = 0;
1471         cmd.channel = cpu_to_le16(channel);
1472         cmd.rxon_flags = priv->staging_rxon.flags;
1473         cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
1474         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1475         if (ch_info)
1476                 cmd.expect_beacon = is_channel_radar(ch_info);
1477         else {
1478                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
1479                         priv->active_rxon.channel, channel);
1480                 return -EFAULT;
1481         }
1482
1483         rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_ht40,
1484                                       ctrl_chan_high, &cmd.tx_power);
1485         if (rc) {
1486                 IWL_DEBUG_11H(priv, "error:%d  fill txpower_tbl\n", rc);
1487                 return rc;
1488         }
1489
1490         priv->switch_rxon.channel = cpu_to_le16(channel);
1491         priv->switch_rxon.switch_in_progress = true;
1492
1493         return iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1494 }
1495
1496 /**
1497  * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1498  */
1499 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
1500                                             struct iwl_tx_queue *txq,
1501                                             u16 byte_cnt)
1502 {
1503         struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
1504         int txq_id = txq->q.id;
1505         int write_ptr = txq->q.write_ptr;
1506         int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
1507         __le16 bc_ent;
1508
1509         WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1510
1511         bc_ent = cpu_to_le16(len & 0xFFF);
1512         /* Set up byte count within first 256 entries */
1513         scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1514
1515         /* If within first 64 entries, duplicate at end */
1516         if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1517                 scd_bc_tbl[txq_id].
1518                         tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
1519 }
1520
1521 /**
1522  * sign_extend - Sign extend a value using specified bit as sign-bit
1523  *
1524  * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1525  * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1526  *
1527  * @param oper value to sign extend
1528  * @param index 0 based bit index (0<=index<32) to sign bit
1529  */
1530 static s32 sign_extend(u32 oper, int index)
1531 {
1532         u8 shift = 31 - index;
1533
1534         return (s32)(oper << shift) >> shift;
1535 }
1536
1537 /**
1538  * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1539  * @statistics: Provides the temperature reading from the uCode
1540  *
1541  * A return of <0 indicates bogus data in the statistics
1542  */
1543 static int iwl4965_hw_get_temperature(struct iwl_priv *priv)
1544 {
1545         s32 temperature;
1546         s32 vt;
1547         s32 R1, R2, R3;
1548         u32 R4;
1549
1550         if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
1551                 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)) {
1552                 IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n");
1553                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
1554                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
1555                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
1556                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
1557         } else {
1558                 IWL_DEBUG_TEMP(priv, "Running temperature calibration\n");
1559                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
1560                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
1561                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
1562                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
1563         }
1564
1565         /*
1566          * Temperature is only 23 bits, so sign extend out to 32.
1567          *
1568          * NOTE If we haven't received a statistics notification yet
1569          * with an updated temperature, use R4 provided to us in the
1570          * "initialize" ALIVE response.
1571          */
1572         if (!test_bit(STATUS_TEMPERATURE, &priv->status))
1573                 vt = sign_extend(R4, 23);
1574         else
1575                 vt = sign_extend(
1576                         le32_to_cpu(priv->statistics.general.temperature), 23);
1577
1578         IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1579
1580         if (R3 == R1) {
1581                 IWL_ERR(priv, "Calibration conflict R1 == R3\n");
1582                 return -1;
1583         }
1584
1585         /* Calculate temperature in degrees Kelvin, adjust by 97%.
1586          * Add offset to center the adjustment around 0 degrees Centigrade. */
1587         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1588         temperature /= (R3 - R1);
1589         temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1590
1591         IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n",
1592                         temperature, KELVIN_TO_CELSIUS(temperature));
1593
1594         return temperature;
1595 }
1596
1597 /* Adjust Txpower only if temperature variance is greater than threshold. */
1598 #define IWL_TEMPERATURE_THRESHOLD   3
1599
1600 /**
1601  * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1602  *
1603  * If the temperature changed has changed sufficiently, then a recalibration
1604  * is needed.
1605  *
1606  * Assumes caller will replace priv->last_temperature once calibration
1607  * executed.
1608  */
1609 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
1610 {
1611         int temp_diff;
1612
1613         if (!test_bit(STATUS_STATISTICS, &priv->status)) {
1614                 IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n");
1615                 return 0;
1616         }
1617
1618         temp_diff = priv->temperature - priv->last_temperature;
1619
1620         /* get absolute value */
1621         if (temp_diff < 0) {
1622                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d, \n", temp_diff);
1623                 temp_diff = -temp_diff;
1624         } else if (temp_diff == 0)
1625                 IWL_DEBUG_POWER(priv, "Same temp, \n");
1626         else
1627                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d, \n", temp_diff);
1628
1629         if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
1630                 IWL_DEBUG_POWER(priv, "Thermal txpower calib not needed\n");
1631                 return 0;
1632         }
1633
1634         IWL_DEBUG_POWER(priv, "Thermal txpower calib needed\n");
1635
1636         return 1;
1637 }
1638
1639 static void iwl4965_temperature_calib(struct iwl_priv *priv)
1640 {
1641         s32 temp;
1642
1643         temp = iwl4965_hw_get_temperature(priv);
1644         if (temp < 0)
1645                 return;
1646
1647         if (priv->temperature != temp) {
1648                 if (priv->temperature)
1649                         IWL_DEBUG_TEMP(priv, "Temperature changed "
1650                                        "from %dC to %dC\n",
1651                                        KELVIN_TO_CELSIUS(priv->temperature),
1652                                        KELVIN_TO_CELSIUS(temp));
1653                 else
1654                         IWL_DEBUG_TEMP(priv, "Temperature "
1655                                        "initialized to %dC\n",
1656                                        KELVIN_TO_CELSIUS(temp));
1657         }
1658
1659         priv->temperature = temp;
1660         iwl_tt_handler(priv);
1661         set_bit(STATUS_TEMPERATURE, &priv->status);
1662
1663         if (!priv->disable_tx_power_cal &&
1664              unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
1665              iwl4965_is_temp_calib_needed(priv))
1666                 queue_work(priv->workqueue, &priv->txpower_work);
1667 }
1668
1669 /**
1670  * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1671  */
1672 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
1673                                             u16 txq_id)
1674 {
1675         /* Simply stop the queue, but don't change any configuration;
1676          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1677         iwl_write_prph(priv,
1678                 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
1679                 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
1680                 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
1681 }
1682
1683 /**
1684  * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1685  * priv->lock must be held by the caller
1686  */
1687 static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
1688                                    u16 ssn_idx, u8 tx_fifo)
1689 {
1690         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1691             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1692              <= txq_id)) {
1693                 IWL_WARN(priv,
1694                         "queue number out of range: %d, must be %d to %d\n",
1695                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1696                         IWL49_FIRST_AMPDU_QUEUE +
1697                         priv->cfg->num_of_ampdu_queues - 1);
1698                 return -EINVAL;
1699         }
1700
1701         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1702
1703         iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1704
1705         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1706         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1707         /* supposes that ssn_idx is valid (!= 0xFFF) */
1708         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1709
1710         iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1711         iwl_txq_ctx_deactivate(priv, txq_id);
1712         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
1713
1714         return 0;
1715 }
1716
1717 /**
1718  * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1719  */
1720 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
1721                                         u16 txq_id)
1722 {
1723         u32 tbl_dw_addr;
1724         u32 tbl_dw;
1725         u16 scd_q2ratid;
1726
1727         scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
1728
1729         tbl_dw_addr = priv->scd_base_addr +
1730                         IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
1731
1732         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
1733
1734         if (txq_id & 0x1)
1735                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
1736         else
1737                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
1738
1739         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
1740
1741         return 0;
1742 }
1743
1744
1745 /**
1746  * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1747  *
1748  * NOTE:  txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1749  *        i.e. it must be one of the higher queues used for aggregation
1750  */
1751 static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id,
1752                                   int tx_fifo, int sta_id, int tid, u16 ssn_idx)
1753 {
1754         unsigned long flags;
1755         u16 ra_tid;
1756
1757         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1758             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1759              <= txq_id)) {
1760                 IWL_WARN(priv,
1761                         "queue number out of range: %d, must be %d to %d\n",
1762                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1763                         IWL49_FIRST_AMPDU_QUEUE +
1764                         priv->cfg->num_of_ampdu_queues - 1);
1765                 return -EINVAL;
1766         }
1767
1768         ra_tid = BUILD_RAxTID(sta_id, tid);
1769
1770         /* Modify device's station table to Tx this TID */
1771         iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
1772
1773         spin_lock_irqsave(&priv->lock, flags);
1774
1775         /* Stop this Tx queue before configuring it */
1776         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1777
1778         /* Map receiver-address / traffic-ID to this queue */
1779         iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
1780
1781         /* Set this queue as a chain-building queue */
1782         iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1783
1784         /* Place first TFD at index corresponding to start sequence number.
1785          * Assumes that ssn_idx is valid (!= 0xFFF) */
1786         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1787         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1788         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1789
1790         /* Set up Tx window size and frame limit for this queue */
1791         iwl_write_targ_mem(priv,
1792                 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
1793                 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
1794                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
1795
1796         iwl_write_targ_mem(priv, priv->scd_base_addr +
1797                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
1798                 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
1799                 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
1800
1801         iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1802
1803         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1804         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
1805
1806         spin_unlock_irqrestore(&priv->lock, flags);
1807
1808         return 0;
1809 }
1810
1811
1812 static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
1813 {
1814         switch (cmd_id) {
1815         case REPLY_RXON:
1816                 return (u16) sizeof(struct iwl4965_rxon_cmd);
1817         default:
1818                 return len;
1819         }
1820 }
1821
1822 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
1823 {
1824         struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
1825         addsta->mode = cmd->mode;
1826         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1827         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
1828         addsta->station_flags = cmd->station_flags;
1829         addsta->station_flags_msk = cmd->station_flags_msk;
1830         addsta->tid_disable_tx = cmd->tid_disable_tx;
1831         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1832         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1833         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1834         addsta->sleep_tx_count = cmd->sleep_tx_count;
1835         addsta->reserved1 = cpu_to_le16(0);
1836         addsta->reserved2 = cpu_to_le16(0);
1837
1838         return (u16)sizeof(struct iwl4965_addsta_cmd);
1839 }
1840
1841 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1842 {
1843         return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
1844 }
1845
1846 /**
1847  * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1848  */
1849 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1850                                       struct iwl_ht_agg *agg,
1851                                       struct iwl4965_tx_resp *tx_resp,
1852                                       int txq_id, u16 start_idx)
1853 {
1854         u16 status;
1855         struct agg_tx_status *frame_status = tx_resp->u.agg_status;
1856         struct ieee80211_tx_info *info = NULL;
1857         struct ieee80211_hdr *hdr = NULL;
1858         u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1859         int i, sh, idx;
1860         u16 seq;
1861         if (agg->wait_for_ba)
1862                 IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
1863
1864         agg->frame_count = tx_resp->frame_count;
1865         agg->start_idx = start_idx;
1866         agg->rate_n_flags = rate_n_flags;
1867         agg->bitmap = 0;
1868
1869         /* num frames attempted by Tx command */
1870         if (agg->frame_count == 1) {
1871                 /* Only one frame was attempted; no block-ack will arrive */
1872                 status = le16_to_cpu(frame_status[0].status);
1873                 idx = start_idx;
1874
1875                 /* FIXME: code repetition */
1876                 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
1877                                    agg->frame_count, agg->start_idx, idx);
1878
1879                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1880                 info->status.rates[0].count = tx_resp->failure_frame + 1;
1881                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1882                 info->flags |= iwl_tx_status_to_mac80211(status);
1883                 iwl_hwrate_to_tx_control(priv, rate_n_flags, info);
1884                 /* FIXME: code repetition end */
1885
1886                 IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n",
1887                                     status & 0xff, tx_resp->failure_frame);
1888                 IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags);
1889
1890                 agg->wait_for_ba = 0;
1891         } else {
1892                 /* Two or more frames were attempted; expect block-ack */
1893                 u64 bitmap = 0;
1894                 int start = agg->start_idx;
1895
1896                 /* Construct bit-map of pending frames within Tx window */
1897                 for (i = 0; i < agg->frame_count; i++) {
1898                         u16 sc;
1899                         status = le16_to_cpu(frame_status[i].status);
1900                         seq  = le16_to_cpu(frame_status[i].sequence);
1901                         idx = SEQ_TO_INDEX(seq);
1902                         txq_id = SEQ_TO_QUEUE(seq);
1903
1904                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1905                                       AGG_TX_STATE_ABORT_MSK))
1906                                 continue;
1907
1908                         IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
1909                                            agg->frame_count, txq_id, idx);
1910
1911                         hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
1912                         if (!hdr) {
1913                                 IWL_ERR(priv,
1914                                         "BUG_ON idx doesn't point to valid skb"
1915                                         " idx=%d, txq_id=%d\n", idx, txq_id);
1916                                 return -1;
1917                         }
1918
1919                         sc = le16_to_cpu(hdr->seq_ctrl);
1920                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1921                                 IWL_ERR(priv,
1922                                         "BUG_ON idx doesn't match seq control"
1923                                         " idx=%d, seq_idx=%d, seq=%d\n",
1924                                         idx, SEQ_TO_SN(sc), hdr->seq_ctrl);
1925                                 return -1;
1926                         }
1927
1928                         IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
1929                                            i, idx, SEQ_TO_SN(sc));
1930
1931                         sh = idx - start;
1932                         if (sh > 64) {
1933                                 sh = (start - idx) + 0xff;
1934                                 bitmap = bitmap << sh;
1935                                 sh = 0;
1936                                 start = idx;
1937                         } else if (sh < -64)
1938                                 sh  = 0xff - (start - idx);
1939                         else if (sh < 0) {
1940                                 sh = start - idx;
1941                                 start = idx;
1942                                 bitmap = bitmap << sh;
1943                                 sh = 0;
1944                         }
1945                         bitmap |= 1ULL << sh;
1946                         IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
1947                                            start, (unsigned long long)bitmap);
1948                 }
1949
1950                 agg->bitmap = bitmap;
1951                 agg->start_idx = start;
1952                 IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
1953                                    agg->frame_count, agg->start_idx,
1954                                    (unsigned long long)agg->bitmap);
1955
1956                 if (bitmap)
1957                         agg->wait_for_ba = 1;
1958         }
1959         return 0;
1960 }
1961
1962 /**
1963  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1964  */
1965 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1966                                 struct iwl_rx_mem_buffer *rxb)
1967 {
1968         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1969         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1970         int txq_id = SEQ_TO_QUEUE(sequence);
1971         int index = SEQ_TO_INDEX(sequence);
1972         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1973         struct ieee80211_hdr *hdr;
1974         struct ieee80211_tx_info *info;
1975         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1976         u32  status = le32_to_cpu(tx_resp->u.status);
1977         int uninitialized_var(tid);
1978         int sta_id;
1979         int freed;
1980         u8 *qc = NULL;
1981
1982         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1983                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
1984                           "is out of range [0-%d] %d %d\n", txq_id,
1985                           index, txq->q.n_bd, txq->q.write_ptr,
1986                           txq->q.read_ptr);
1987                 return;
1988         }
1989
1990         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1991         memset(&info->status, 0, sizeof(info->status));
1992
1993         hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
1994         if (ieee80211_is_data_qos(hdr->frame_control)) {
1995                 qc = ieee80211_get_qos_ctl(hdr);
1996                 tid = qc[0] & 0xf;
1997         }
1998
1999         sta_id = iwl_get_ra_sta_id(priv, hdr);
2000         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2001                 IWL_ERR(priv, "Station not known\n");
2002                 return;
2003         }
2004
2005         if (txq->sched_retry) {
2006                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2007                 struct iwl_ht_agg *agg = NULL;
2008
2009                 WARN_ON(!qc);
2010
2011                 agg = &priv->stations[sta_id].tid[tid].agg;
2012
2013                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
2014
2015                 /* check if BAR is needed */
2016                 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
2017                         info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
2018
2019                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2020                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2021                         IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
2022                                            "%d index %d\n", scd_ssn , index);
2023                         freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2024                         iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
2025
2026                         if (priv->mac80211_registered &&
2027                             (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
2028                             (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) {
2029                                 if (agg->state == IWL_AGG_OFF)
2030                                         iwl_wake_queue(priv, txq_id);
2031                                 else
2032                                         iwl_wake_queue(priv, txq->swq_id);
2033                         }
2034                 }
2035         } else {
2036                 info->status.rates[0].count = tx_resp->failure_frame + 1;
2037                 info->flags |= iwl_tx_status_to_mac80211(status);
2038                 iwl_hwrate_to_tx_control(priv,
2039                                         le32_to_cpu(tx_resp->rate_n_flags),
2040                                         info);
2041
2042                 IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) "
2043                                    "rate_n_flags 0x%x retries %d\n",
2044                                    txq_id,
2045                                    iwl_get_tx_fail_reason(status), status,
2046                                    le32_to_cpu(tx_resp->rate_n_flags),
2047                                    tx_resp->failure_frame);
2048
2049                 freed = iwl_tx_queue_reclaim(priv, txq_id, index);
2050                 iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
2051
2052                 if (priv->mac80211_registered &&
2053                     (iwl_queue_space(&txq->q) > txq->q.low_mark))
2054                         iwl_wake_queue(priv, txq_id);
2055         }
2056
2057         iwl_txq_check_empty(priv, sta_id, tid, txq_id);
2058
2059         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
2060                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
2061 }
2062
2063 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2064                              struct iwl_rx_phy_res *rx_resp)
2065 {
2066         /* data from PHY/DSP regarding signal strength, etc.,
2067          *   contents are always there, not configurable by host.  */
2068         struct iwl4965_rx_non_cfg_phy *ncphy =
2069             (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
2070         u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK)
2071                         >> IWL49_AGC_DB_POS;
2072
2073         u32 valid_antennae =
2074             (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK)
2075                         >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET;
2076         u8 max_rssi = 0;
2077         u32 i;
2078
2079         /* Find max rssi among 3 possible receivers.
2080          * These values are measured by the digital signal processor (DSP).
2081          * They should stay fairly constant even as the signal strength varies,
2082          *   if the radio's automatic gain control (AGC) is working right.
2083          * AGC value (see below) will provide the "interesting" info. */
2084         for (i = 0; i < 3; i++)
2085                 if (valid_antennae & (1 << i))
2086                         max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2087
2088         IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2089                 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2090                 max_rssi, agc);
2091
2092         /* dBm = max_rssi dB - agc dB - constant.
2093          * Higher AGC (higher radio gain) means lower signal. */
2094         return max_rssi - agc - IWL49_RSSI_OFFSET;
2095 }
2096
2097
2098 /* Set up 4965-specific Rx frame reply handlers */
2099 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
2100 {
2101         /* Legacy Rx frames */
2102         priv->rx_handlers[REPLY_RX] = iwl_rx_reply_rx;
2103         /* Tx response */
2104         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2105 }
2106
2107 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
2108 {
2109         INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
2110 }
2111
2112 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
2113 {
2114         cancel_work_sync(&priv->txpower_work);
2115 }
2116
2117 #define IWL4965_UCODE_GET(item)                                         \
2118 static u32 iwl4965_ucode_get_##item(const struct iwl_ucode_header *ucode,\
2119                                     u32 api_ver)                        \
2120 {                                                                       \
2121         return le32_to_cpu(ucode->u.v1.item);                           \
2122 }
2123
2124 static u32 iwl4965_ucode_get_header_size(u32 api_ver)
2125 {
2126         return UCODE_HEADER_SIZE(1);
2127 }
2128 static u32 iwl4965_ucode_get_build(const struct iwl_ucode_header *ucode,
2129                                    u32 api_ver)
2130 {
2131         return 0;
2132 }
2133 static u8 *iwl4965_ucode_get_data(const struct iwl_ucode_header *ucode,
2134                                   u32 api_ver)
2135 {
2136         return (u8 *) ucode->u.v1.data;
2137 }
2138
2139 IWL4965_UCODE_GET(inst_size);
2140 IWL4965_UCODE_GET(data_size);
2141 IWL4965_UCODE_GET(init_size);
2142 IWL4965_UCODE_GET(init_data_size);
2143 IWL4965_UCODE_GET(boot_size);
2144
2145 static struct iwl_hcmd_ops iwl4965_hcmd = {
2146         .rxon_assoc = iwl4965_send_rxon_assoc,
2147         .commit_rxon = iwl_commit_rxon,
2148         .set_rxon_chain = iwl_set_rxon_chain,
2149 };
2150
2151 static struct iwl_ucode_ops iwl4965_ucode = {
2152         .get_header_size = iwl4965_ucode_get_header_size,
2153         .get_build = iwl4965_ucode_get_build,
2154         .get_inst_size = iwl4965_ucode_get_inst_size,
2155         .get_data_size = iwl4965_ucode_get_data_size,
2156         .get_init_size = iwl4965_ucode_get_init_size,
2157         .get_init_data_size = iwl4965_ucode_get_init_data_size,
2158         .get_boot_size = iwl4965_ucode_get_boot_size,
2159         .get_data = iwl4965_ucode_get_data,
2160 };
2161 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
2162         .get_hcmd_size = iwl4965_get_hcmd_size,
2163         .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
2164         .chain_noise_reset = iwl4965_chain_noise_reset,
2165         .gain_computation = iwl4965_gain_computation,
2166         .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag,
2167         .calc_rssi = iwl4965_calc_rssi,
2168 };
2169
2170 static struct iwl_lib_ops iwl4965_lib = {
2171         .set_hw_params = iwl4965_hw_set_hw_params,
2172         .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
2173         .txq_set_sched = iwl4965_txq_set_sched,
2174         .txq_agg_enable = iwl4965_txq_agg_enable,
2175         .txq_agg_disable = iwl4965_txq_agg_disable,
2176         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
2177         .txq_free_tfd = iwl_hw_txq_free_tfd,
2178         .txq_init = iwl_hw_tx_queue_init,
2179         .rx_handler_setup = iwl4965_rx_handler_setup,
2180         .setup_deferred_work = iwl4965_setup_deferred_work,
2181         .cancel_deferred_work = iwl4965_cancel_deferred_work,
2182         .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
2183         .alive_notify = iwl4965_alive_notify,
2184         .init_alive_start = iwl4965_init_alive_start,
2185         .load_ucode = iwl4965_load_bsm,
2186         .dump_nic_event_log = iwl_dump_nic_event_log,
2187         .dump_nic_error_log = iwl_dump_nic_error_log,
2188         .dump_fh = iwl_dump_fh,
2189         .set_channel_switch = iwl4965_hw_channel_switch,
2190         .apm_ops = {
2191                 .init = iwl_apm_init,
2192                 .stop = iwl_apm_stop,
2193                 .config = iwl4965_nic_config,
2194                 .set_pwr_src = iwl_set_pwr_src,
2195         },
2196         .eeprom_ops = {
2197                 .regulatory_bands = {
2198                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2199                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2200                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2201                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2202                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2203                         EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
2204                         EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2205                 },
2206                 .verify_signature  = iwlcore_eeprom_verify_signature,
2207                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
2208                 .release_semaphore = iwlcore_eeprom_release_semaphore,
2209                 .calib_version = iwl4965_eeprom_calib_version,
2210                 .query_addr = iwlcore_eeprom_query_addr,
2211         },
2212         .send_tx_power  = iwl4965_send_tx_power,
2213         .update_chain_flags = iwl_update_chain_flags,
2214         .post_associate = iwl_post_associate,
2215         .config_ap = iwl_config_ap,
2216         .isr = iwl_isr_legacy,
2217         .temp_ops = {
2218                 .temperature = iwl4965_temperature_calib,
2219                 .set_ct_kill = iwl4965_set_ct_threshold,
2220         },
2221         .add_bcast_station = iwl_add_bcast_station,
2222         .check_plcp_health = iwl_good_plcp_health,
2223 };
2224
2225 static const struct iwl_ops iwl4965_ops = {
2226         .ucode = &iwl4965_ucode,
2227         .lib = &iwl4965_lib,
2228         .hcmd = &iwl4965_hcmd,
2229         .utils = &iwl4965_hcmd_utils,
2230         .led = &iwlagn_led_ops,
2231 };
2232
2233 struct iwl_cfg iwl4965_agn_cfg = {
2234         .name = "Intel(R) Wireless WiFi Link 4965AGN",
2235         .fw_name_pre = IWL4965_FW_PRE,
2236         .ucode_api_max = IWL4965_UCODE_API_MAX,
2237         .ucode_api_min = IWL4965_UCODE_API_MIN,
2238         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
2239         .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
2240         .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
2241         .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
2242         .ops = &iwl4965_ops,
2243         .num_of_queues = IWL49_NUM_QUEUES,
2244         .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES,
2245         .mod_params = &iwl4965_mod_params,
2246         .valid_tx_ant = ANT_AB,
2247         .valid_rx_ant = ANT_ABC,
2248         .pll_cfg_val = 0,
2249         .set_l0s = true,
2250         .use_bsm = true,
2251         .use_isr_legacy = true,
2252         .ht_greenfield_support = false,
2253         .broken_powersave = true,
2254         .led_compensation = 61,
2255         .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
2256         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
2257         .monitor_recover_period = IWL_MONITORING_PERIOD,
2258 };
2259
2260 /* Module firmware */
2261 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX));
2262
2263 module_param_named(antenna, iwl4965_mod_params.antenna, int, S_IRUGO);
2264 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
2265 module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, S_IRUGO);
2266 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2267 module_param_named(
2268         disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, S_IRUGO);
2269 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
2270
2271 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, S_IRUGO);
2272 MODULE_PARM_DESC(queues_num, "number of hw queues.");
2273 /* 11n */
2274 module_param_named(11n_disable, iwl4965_mod_params.disable_11n, int, S_IRUGO);
2275 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
2276 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K,
2277                    int, S_IRUGO);
2278 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2279
2280 module_param_named(fw_restart4965, iwl4965_mod_params.restart_fw, int, S_IRUGO);
2281 MODULE_PARM_DESC(fw_restart4965, "restart firmware in case of error");