SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 #include "iwl-agn.h"
  50 #include "iwl-agn-debugfs.h"
  51
  52 static int iwl4965_send_tx_power(struct iwl_priv *priv);
  53 static int iwl4965_hw_get_temperature(struct iwl_priv *priv);
  54
  55 /* Highest firmware API version supported */
  56 #define IWL4965_UCODE_API_MAX 2
  57
  58 /* Lowest firmware API version supported */
  59 #define IWL4965_UCODE_API_MIN 2
  60
  61 #define IWL4965_FW_PRE "iwlwifi-4965-"
  62 #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode"
  63 #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api)
  64
  65 /* check contents of special bootstrap uCode SRAM */
  66 static int iwl4965_verify_bsm(struct iwl_priv *priv)
  67 {
  68         __le32 *image = priv->ucode_boot.v_addr;
  69         u32 len = priv->ucode_boot.len;
  70         u32 reg;
  71         u32 val;
  72
  73         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
  74
  75         /* verify BSM SRAM contents */
  76         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
  77         for (reg = BSM_SRAM_LOWER_BOUND;
  78              reg < BSM_SRAM_LOWER_BOUND + len;
  79              reg += sizeof(u32), image++) {
  80                 val = iwl_read_prph(priv, reg);
  81                 if (val != le32_to_cpu(*image)) {
  82                         IWL_ERR(priv, "BSM uCode verification failed at "
  83                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
  84                                   BSM_SRAM_LOWER_BOUND,
  85                                   reg - BSM_SRAM_LOWER_BOUND, len,
  86                                   val, le32_to_cpu(*image));
  87                         return -EIO;
  88                 }
  89         }
  90
  91         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
  92
  93         return 0;
  94 }
  95
  96 /**
  97  * iwl4965_load_bsm - Load bootstrap instructions
  98  *
  99  * BSM operation:
 100  *
 101  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 102  * in special SRAM that does not power down during RFKILL.  When powering back
 103  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 104  * the bootstrap program into the on-board processor, and starts it.
 105  *
 106  * The bootstrap program loads (via DMA) instructions and data for a new
 107  * program from host DRAM locations indicated by the host driver in the
 108  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 109  * automatically.
 110  *
 111  * When initializing the NIC, the host driver points the BSM to the
 112  * "initialize" uCode image.  This uCode sets up some internal data, then
 113  * notifies host via "initialize alive" that it is complete.
 114  *
 115  * The host then replaces the BSM_DRAM_* pointer values to point to the
 116  * normal runtime uCode instructions and a backup uCode data cache buffer
 117  * (filled initially with starting data values for the on-board processor),
 118  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 119  * which begins normal operation.
 120  *
 121  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 122  * the backup data cache in DRAM before SRAM is powered down.
 123  *
 124  * When powering back up, the BSM loads the bootstrap program.  This reloads
 125  * the runtime uCode instructions and the backup data cache into SRAM,
 126  * and re-launches the runtime uCode from where it left off.
 127  */
 128 static int iwl4965_load_bsm(struct iwl_priv *priv)
 129 {
 130         __le32 *image = priv->ucode_boot.v_addr;
 131         u32 len = priv->ucode_boot.len;
 132         dma_addr_t pinst;
 133         dma_addr_t pdata;
 134         u32 inst_len;
 135         u32 data_len;
 136         int i;
 137         u32 done;
 138         u32 reg_offset;
 139         int ret;
 140
 141         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
 142
 143         priv->ucode_type = UCODE_RT;
 144
 145         /* make sure bootstrap program is no larger than BSM's SRAM size */
 146         if (len > IWL49_MAX_BSM_SIZE)
 147                 return -EINVAL;
 148
 149         /* Tell bootstrap uCode where to find the "Initialize" uCode
 150          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 151          * NOTE:  iwl_init_alive_start() will replace these values,
 152          *        after the "initialize" uCode has run, to point to
 153          *        runtime/protocol instructions and backup data cache.
 154          */
 155         pinst = priv->ucode_init.p_addr >> 4;
 156         pdata = priv->ucode_init_data.p_addr >> 4;
 157         inst_len = priv->ucode_init.len;
 158         data_len = priv->ucode_init_data.len;
 159
 160         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 161         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 162         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 163         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 164
 165         /* Fill BSM memory with bootstrap instructions */
 166         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 167              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 168              reg_offset += sizeof(u32), image++)
 169                 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
 170
 171         ret = iwl4965_verify_bsm(priv);
 172         if (ret)
 173                 return ret;
 174
 175         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 176         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
 177         iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND);
 178         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 179
 180         /* Load bootstrap code into instruction SRAM now,
 181          *   to prepare to load "initialize" uCode */
 182         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 183
 184         /* Wait for load of bootstrap uCode to finish */
 185         for (i = 0; i < 100; i++) {
 186                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
 187                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 188                         break;
 189                 udelay(10);
 190         }
 191         if (i < 100)
 192                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
 193         else {
 194                 IWL_ERR(priv, "BSM write did not complete!\n");
 195                 return -EIO;
 196         }
 197
 198         /* Enable future boot loads whenever power management unit triggers it
 199          *   (e.g. when powering back up after power-save shutdown) */
 200         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 201
 202
 203         return 0;
 204 }
 205
 206 /**
 207  * iwl4965_set_ucode_ptrs - Set uCode address location
 208  *
 209  * Tell initialization uCode where to find runtime uCode.
 210  *
 211  * BSM registers initially contain pointers to initialization uCode.
 212  * We need to replace them to load runtime uCode inst and data,
 213  * and to save runtime data when powering down.
 214  */
 215 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
 216 {
 217         dma_addr_t pinst;
 218         dma_addr_t pdata;
 219         int ret = 0;
 220
 221         /* bits 35:4 for 4965 */
 222         pinst = priv->ucode_code.p_addr >> 4;
 223         pdata = priv->ucode_data_backup.p_addr >> 4;
 224
 225         /* Tell bootstrap uCode where to find image to load */
 226         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 227         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 228         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
 229                                  priv->ucode_data.len);
 230
 231         /* Inst byte count must be last to set up, bit 31 signals uCode
 232          *   that all new ptr/size info is in place */
 233         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
 234                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
 235         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
 236
 237         return ret;
 238 }
 239
 240 /**
 241  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
 242  *
 243  * Called after REPLY_ALIVE notification received from "initialize" uCode.
 244  *
 245  * The 4965 "initialize" ALIVE reply contains calibration data for:
 246  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
 247  *   (3945 does not contain this data).
 248  *
 249  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 250 */
 251 static void iwl4965_init_alive_start(struct iwl_priv *priv)
 252 {
 253         /* Check alive response for "valid" sign from uCode */
 254         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
 255                 /* We had an error bringing up the hardware, so take it
 256                  * all the way back down so we can try again */
 257                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
 258                 goto restart;
 259         }
 260
 261         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 262          * This is a paranoid check, because we would not have gotten the
 263          * "initialize" alive if code weren't properly loaded.  */
 264         if (iwl_verify_ucode(priv)) {
 265                 /* Runtime instruction load was bad;
 266                  * take it all the way back down so we can try again */
 267                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
 268                 goto restart;
 269         }
 270
 271         /* Calculate temperature */
 272         priv->temperature = iwl4965_hw_get_temperature(priv);
 273
 274         /* Send pointers to protocol/runtime uCode image ... init code will
 275          * load and launch runtime uCode, which will send us another "Alive"
 276          * notification. */
 277         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
 278         if (iwl4965_set_ucode_ptrs(priv)) {
 279                 /* Runtime instruction load won't happen;
 280                  * take it all the way back down so we can try again */
 281                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
 282                 goto restart;
 283         }
 284         return;
 285
 286 restart:
 287         queue_work(priv->workqueue, &priv->restart);
 288 }
 289
 290 static bool is_ht40_channel(__le32 rxon_flags)
 291 {
 292         int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK)
 293                                     >> RXON_FLG_CHANNEL_MODE_POS;
 294         return ((chan_mod == CHANNEL_MODE_PURE_40) ||
 295                   (chan_mod == CHANNEL_MODE_MIXED));
 296 }
 297
 298 /*
 299  * EEPROM handlers
 300  */
 301 static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv)
 302 {
 303         return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
 304 }
 305
 306 /*
 307  * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
 308  * must be called under priv->lock and mac access
 309  */
 310 static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask)
 311 {
 312         iwl_write_prph(priv, IWL49_SCD_TXFACT, mask);
 313 }
 314
 315 static void iwl4965_nic_config(struct iwl_priv *priv)
 316 {
 317         unsigned long flags;
 318         u16 radio_cfg;
 319
 320         spin_lock_irqsave(&priv->lock, flags);
 321
 322         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 323
 324         /* write radio config values to register */
 325         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 326                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 327                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 328                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 329                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 330
 331         /* set CSR_HW_CONFIG_REG for uCode use */
 332         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 333                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 334                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 335
 336         priv->calib_info = (struct iwl_eeprom_calib_info *)
 337                 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 338
 339         spin_unlock_irqrestore(&priv->lock, flags);
 340 }
 341
 342 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 343  * Called after every association, but this runs only once!
 344  *  ... once chain noise is calibrated the first time, it's good forever.  */
 345 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
 346 {
 347         struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
 348
 349         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 350                 struct iwl_calib_diff_gain_cmd cmd;
 351
 352                 memset(&cmd, 0, sizeof(cmd));
 353                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 354                 cmd.diff_gain_a = 0;
 355                 cmd.diff_gain_b = 0;
 356                 cmd.diff_gain_c = 0;
 357                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 358                                  sizeof(cmd), &cmd))
 359                         IWL_ERR(priv,
 360                                 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
 361                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 362                 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
 363         }
 364 }
 365
 366 static void iwl4965_gain_computation(struct iwl_priv *priv,
 367                 u32 *average_noise,
 368                 u16 min_average_noise_antenna_i,
 369                 u32 min_average_noise,
 370                 u8 default_chain)
 371 {
 372         int i, ret;
 373         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 374
 375         data->delta_gain_code[min_average_noise_antenna_i] = 0;
 376
 377         for (i = default_chain; i < NUM_RX_CHAINS; i++) {
 378                 s32 delta_g = 0;
 379
 380                 if (!(data->disconn_array[i]) &&
 381                     (data->delta_gain_code[i] ==
 382                              CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
 383                         delta_g = average_noise[i] - min_average_noise;
 384                         data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
 385                         data->delta_gain_code[i] =
 386                                 min(data->delta_gain_code[i],
 387                                 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 388
 389                         data->delta_gain_code[i] =
 390                                 (data->delta_gain_code[i] | (1 << 2));
 391                 } else {
 392                         data->delta_gain_code[i] = 0;
 393                 }
 394         }
 395         IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n",
 396                      data->delta_gain_code[0],
 397                      data->delta_gain_code[1],
 398                      data->delta_gain_code[2]);
 399
 400         /* Differential gain gets sent to uCode only once */
 401         if (!data->radio_write) {
 402                 struct iwl_calib_diff_gain_cmd cmd;
 403                 data->radio_write = 1;
 404
 405                 memset(&cmd, 0, sizeof(cmd));
 406                 cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD;
 407                 cmd.diff_gain_a = data->delta_gain_code[0];
 408                 cmd.diff_gain_b = data->delta_gain_code[1];
 409                 cmd.diff_gain_c = data->delta_gain_code[2];
 410                 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 411                                       sizeof(cmd), &cmd);
 412                 if (ret)
 413                         IWL_DEBUG_CALIB(priv, "fail sending cmd "
 414                                      "REPLY_PHY_CALIBRATION_CMD\n");
 415
 416                 /* TODO we might want recalculate
 417                  * rx_chain in rxon cmd */
 418
 419                 /* Mark so we run this algo only once! */
 420                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 421         }
 422         data->chain_noise_a = 0;
 423         data->chain_noise_b = 0;
 424         data->chain_noise_c = 0;
 425         data->chain_signal_a = 0;
 426         data->chain_signal_b = 0;
 427         data->chain_signal_c = 0;
 428         data->beacon_count = 0;
 429 }
 430
 431 static void iwl4965_bg_txpower_work(struct work_struct *work)
 432 {
 433         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 434                         txpower_work);
 435
 436         /* If a scan happened to start before we got here
 437          * then just return; the statistics notification will
 438          * kick off another scheduled work to compensate for
 439          * any temperature delta we missed here. */
 440         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 441             test_bit(STATUS_SCANNING, &priv->status))
 442                 return;
 443
 444         mutex_lock(&priv->mutex);
 445
 446         /* Regardless of if we are associated, we must reconfigure the
 447          * TX power since frames can be sent on non-radar channels while
 448          * not associated */
 449         iwl4965_send_tx_power(priv);
 450
 451         /* Update last_temperature to keep is_calib_needed from running
 452          * when it isn't needed... */
 453         priv->last_temperature = priv->temperature;
 454
 455         mutex_unlock(&priv->mutex);
 456 }
 457
 458 /*
 459  * Acquire priv->lock before calling this function !
 460  */
 461 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
 462 {
 463         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
 464                              (index & 0xff) | (txq_id << 8));
 465         iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
 466 }
 467
 468 /**
 469  * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
 470  * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
 471  * @scd_retry: (1) Indicates queue will be used in aggregation mode
 472  *
 473  * NOTE:  Acquire priv->lock before calling this function !
 474  */
 475 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
 476                                         struct iwl_tx_queue *txq,
 477                                         int tx_fifo_id, int scd_retry)
 478 {
 479         int txq_id = txq->q.id;
 480
 481         /* Find out whether to activate Tx queue */
 482         int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0;
 483
 484         /* Set up and activate */
 485         iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
 486                          (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
 487                          (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
 488                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
 489                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
 490                          IWL49_SCD_QUEUE_STTS_REG_MSK);
 491
 492         txq->sched_retry = scd_retry;
 493
 494         IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n",
 495                        active ? "Activate" : "Deactivate",
 496                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
 497 }
 498
 499 static const s8 default_queue_to_tx_fifo[] = {
 500         IWL_TX_FIFO_VO,
 501         IWL_TX_FIFO_VI,
 502         IWL_TX_FIFO_BE,
 503         IWL_TX_FIFO_BK,
 504         IWL49_CMD_FIFO_NUM,
 505         IWL_TX_FIFO_UNUSED,
 506         IWL_TX_FIFO_UNUSED,
 507 };
 508
 509 static int iwl4965_alive_notify(struct iwl_priv *priv)
 510 {
 511         u32 a;
 512         unsigned long flags;
 513         int i, chan;
 514         u32 reg_val;
 515
 516         spin_lock_irqsave(&priv->lock, flags);
 517
 518         /* Clear 4965's internal Tx Scheduler data base */
 519         priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
 520         a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
 521         for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
 522                 iwl_write_targ_mem(priv, a, 0);
 523         for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
 524                 iwl_write_targ_mem(priv, a, 0);
 525         for (; a < priv->scd_base_addr +
 526                IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4)
 527                 iwl_write_targ_mem(priv, a, 0);
 528
 529         /* Tel 4965 where to find Tx byte count tables */
 530         iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
 531                         priv->scd_bc_tbls.dma >> 10);
 532
 533         /* Enable DMA channel */
 534         for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++)
 535                 iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
 536                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
 537                                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
 538
 539         /* Update FH chicken bits */
 540         reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG);
 541         iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG,
 542                            reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
 543
 544         /* Disable chain mode for all queues */
 545         iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
 546
 547         /* Initialize each Tx queue (including the command queue) */
 548         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
 549
 550                 /* TFD circular buffer read/write indexes */
 551                 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
 552                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
 553
 554                 /* Max Tx Window size for Scheduler-ACK mode */
 555                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 556                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
 557                                 (SCD_WIN_SIZE <<
 558                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
 559                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
 560
 561                 /* Frame limit */
 562                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 563                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
 564                                 sizeof(u32),
 565                                 (SCD_FRAME_LIMIT <<
 566                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 567                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
 568
 569         }
 570         iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
 571                                  (1 << priv->hw_params.max_txq_num) - 1);
 572
 573         /* Activate all Tx DMA/FIFO channels */
 574         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6));
 575
 576         iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 577
 578         /* make sure all queue are not stopped */
 579         memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped));
 580         for (i = 0; i < 4; i++)
 581                 atomic_set(&priv->queue_stop_count[i], 0);
 582
 583         /* reset to 0 to enable all the queue first */
 584         priv->txq_ctx_active_msk = 0;
 585         /* Map each Tx/cmd queue to its corresponding fifo */
 586         BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo) != 7);
 587         for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
 588                 int ac = default_queue_to_tx_fifo[i];
 589
 590                 iwl_txq_ctx_activate(priv, i);
 591
 592                 if (ac == IWL_TX_FIFO_UNUSED)
 593                         continue;
 594
 595                 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
 596         }
 597
 598         spin_unlock_irqrestore(&priv->lock, flags);
 599
 600         return 0;
 601 }
 602
 603 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
 604         .min_nrg_cck = 97,
 605         .max_nrg_cck = 0, /* not used, set to 0 */
 606
 607         .auto_corr_min_ofdm = 85,
 608         .auto_corr_min_ofdm_mrc = 170,
 609         .auto_corr_min_ofdm_x1 = 105,
 610         .auto_corr_min_ofdm_mrc_x1 = 220,
 611
 612         .auto_corr_max_ofdm = 120,
 613         .auto_corr_max_ofdm_mrc = 210,
 614         .auto_corr_max_ofdm_x1 = 140,
 615         .auto_corr_max_ofdm_mrc_x1 = 270,
 616
 617         .auto_corr_min_cck = 125,
 618         .auto_corr_max_cck = 200,
 619         .auto_corr_min_cck_mrc = 200,
 620         .auto_corr_max_cck_mrc = 400,
 621
 622         .nrg_th_cck = 100,
 623         .nrg_th_ofdm = 100,
 624
 625         .barker_corr_th_min = 190,
 626         .barker_corr_th_min_mrc = 390,
 627         .nrg_th_cca = 62,
 628 };
 629
 630 static void iwl4965_set_ct_threshold(struct iwl_priv *priv)
 631 {
 632         /* want Kelvin */
 633         priv->hw_params.ct_kill_threshold =
 634                 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY);
 635 }
 636
 637 /**
 638  * iwl4965_hw_set_hw_params
 639  *
 640  * Called when initializing driver
 641  */
 642 static int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
 643 {
 644         if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES &&
 645             priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES)
 646                 priv->cfg->num_of_queues =
 647                         priv->cfg->mod_params->num_of_queues;
 648
 649         priv->hw_params.max_txq_num = priv->cfg->num_of_queues;
 650         priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM;
 651         priv->hw_params.scd_bc_tbls_size =
 652                         priv->cfg->num_of_queues *
 653                         sizeof(struct iwl4965_scd_bc_tbl);
 654         priv->hw_params.tfd_size = sizeof(struct iwl_tfd);
 655         priv->hw_params.max_stations = IWL4965_STATION_COUNT;
 656         priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
 657         priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
 658         priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
 659         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
 660         priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ);
 661
 662         priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR;
 663
 664         priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant);
 665         priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant);
 666         priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant;
 667         priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant;
 668         if (priv->cfg->ops->lib->temp_ops.set_ct_kill)
 669                 priv->cfg->ops->lib->temp_ops.set_ct_kill(priv);
 670
 671         priv->hw_params.sens = &iwl4965_sensitivity;
 672
 673         return 0;
 674 }
 675
 676 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
 677 {
 678         s32 sign = 1;
 679
 680         if (num < 0) {
 681                 sign = -sign;
 682                 num = -num;
 683         }
 684         if (denom < 0) {
 685                 sign = -sign;
 686                 denom = -denom;
 687         }
 688         *res = 1;
 689         *res = ((num * 2 + denom) / (denom * 2)) * sign;
 690
 691         return 1;
 692 }
 693
 694 /**
 695  * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
 696  *
 697  * Determines power supply voltage compensation for txpower calculations.
 698  * Returns number of 1/2-dB steps to subtract from gain table index,
 699  * to compensate for difference between power supply voltage during
 700  * factory measurements, vs. current power supply voltage.
 701  *
 702  * Voltage indication is higher for lower voltage.
 703  * Lower voltage requires more gain (lower gain table index).
 704  */
 705 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
 706                                             s32 current_voltage)
 707 {
 708         s32 comp = 0;
 709
 710         if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
 711             (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
 712                 return 0;
 713
 714         iwl4965_math_div_round(current_voltage - eeprom_voltage,
 715                                TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
 716
 717         if (current_voltage > eeprom_voltage)
 718                 comp *= 2;
 719         if ((comp < -2) || (comp > 2))
 720                 comp = 0;
 721
 722         return comp;
 723 }
 724
 725 static s32 iwl4965_get_tx_atten_grp(u16 channel)
 726 {
 727         if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
 728             channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
 729                 return CALIB_CH_GROUP_5;
 730
 731         if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
 732             channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
 733                 return CALIB_CH_GROUP_1;
 734
 735         if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
 736             channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
 737                 return CALIB_CH_GROUP_2;
 738
 739         if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
 740             channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
 741                 return CALIB_CH_GROUP_3;
 742
 743         if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
 744             channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
 745                 return CALIB_CH_GROUP_4;
 746
 747         return -1;
 748 }
 749
 750 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
 751 {
 752         s32 b = -1;
 753
 754         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
 755                 if (priv->calib_info->band_info[b].ch_from == 0)
 756                         continue;
 757
 758                 if ((channel >= priv->calib_info->band_info[b].ch_from)
 759                     && (channel <= priv->calib_info->band_info[b].ch_to))
 760                         break;
 761         }
 762
 763         return b;
 764 }
 765
 766 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
 767 {
 768         s32 val;
 769
 770         if (x2 == x1)
 771                 return y1;
 772         else {
 773                 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
 774                 return val + y2;
 775         }
 776 }
 777
 778 /**
 779  * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
 780  *
 781  * Interpolates factory measurements from the two sample channels within a
 782  * sub-band, to apply to channel of interest.  Interpolation is proportional to
 783  * differences in channel frequencies, which is proportional to differences
 784  * in channel number.
 785  */
 786 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
 787                                     struct iwl_eeprom_calib_ch_info *chan_info)
 788 {
 789         s32 s = -1;
 790         u32 c;
 791         u32 m;
 792         const struct iwl_eeprom_calib_measure *m1;
 793         const struct iwl_eeprom_calib_measure *m2;
 794         struct iwl_eeprom_calib_measure *omeas;
 795         u32 ch_i1;
 796         u32 ch_i2;
 797
 798         s = iwl4965_get_sub_band(priv, channel);
 799         if (s >= EEPROM_TX_POWER_BANDS) {
 800                 IWL_ERR(priv, "Tx Power can not find channel %d\n", channel);
 801                 return -1;
 802         }
 803
 804         ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
 805         ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
 806         chan_info->ch_num = (u8) channel;
 807
 808         IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n",
 809                           channel, s, ch_i1, ch_i2);
 810
 811         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
 812                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
 813                         m1 = &(priv->calib_info->band_info[s].ch1.
 814                                measurements[c][m]);
 815                         m2 = &(priv->calib_info->band_info[s].ch2.
 816                                measurements[c][m]);
 817                         omeas = &(chan_info->measurements[c][m]);
 818
 819                         omeas->actual_pow =
 820                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 821                                                            m1->actual_pow,
 822                                                            ch_i2,
 823                                                            m2->actual_pow);
 824                         omeas->gain_idx =
 825                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 826                                                            m1->gain_idx, ch_i2,
 827                                                            m2->gain_idx);
 828                         omeas->temperature =
 829                             (u8) iwl4965_interpolate_value(channel, ch_i1,
 830                                                            m1->temperature,
 831                                                            ch_i2,
 832                                                            m2->temperature);
 833                         omeas->pa_det =
 834                             (s8) iwl4965_interpolate_value(channel, ch_i1,
 835                                                            m1->pa_det, ch_i2,
 836                                                            m2->pa_det);
 837
 838                         IWL_DEBUG_TXPOWER(priv,
 839                                 "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
 840                                 m1->actual_pow, m2->actual_pow, omeas->actual_pow);
 841                         IWL_DEBUG_TXPOWER(priv,
 842                                 "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
 843                                 m1->gain_idx, m2->gain_idx, omeas->gain_idx);
 844                         IWL_DEBUG_TXPOWER(priv,
 845                                 "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
 846                                 m1->pa_det, m2->pa_det, omeas->pa_det);
 847                         IWL_DEBUG_TXPOWER(priv,
 848                                 "chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
 849                                 m1->temperature, m2->temperature,
 850                                 omeas->temperature);
 851                 }
 852         }
 853
 854         return 0;
 855 }
 856
 857 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
 858  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
 859 static s32 back_off_table[] = {
 860         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
 861         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
 862         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
 863         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
 864         10                      /* CCK */
 865 };
 866
 867 /* Thermal compensation values for txpower for various frequency ranges ...
 868  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
 869 static struct iwl4965_txpower_comp_entry {
 870         s32 degrees_per_05db_a;
 871         s32 degrees_per_05db_a_denom;
 872 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
 873         {9, 2},                 /* group 0 5.2, ch  34-43 */
 874         {4, 1},                 /* group 1 5.2, ch  44-70 */
 875         {4, 1},                 /* group 2 5.2, ch  71-124 */
 876         {4, 1},                 /* group 3 5.2, ch 125-200 */
 877         {3, 1}                  /* group 4 2.4, ch   all */
 878 };
 879
 880 static s32 get_min_power_index(s32 rate_power_index, u32 band)
 881 {
 882         if (!band) {
 883                 if ((rate_power_index & 7) <= 4)
 884                         return MIN_TX_GAIN_INDEX_52GHZ_EXT;
 885         }
 886         return MIN_TX_GAIN_INDEX;
 887 }
 888
 889 struct gain_entry {
 890         u8 dsp;
 891         u8 radio;
 892 };
 893
 894 static const struct gain_entry gain_table[2][108] = {
 895         /* 5.2GHz power gain index table */
 896         {
 897          {123, 0x3F},           /* highest txpower */
 898          {117, 0x3F},
 899          {110, 0x3F},
 900          {104, 0x3F},
 901          {98, 0x3F},
 902          {110, 0x3E},
 903          {104, 0x3E},
 904          {98, 0x3E},
 905          {110, 0x3D},
 906          {104, 0x3D},
 907          {98, 0x3D},
 908          {110, 0x3C},
 909          {104, 0x3C},
 910          {98, 0x3C},
 911          {110, 0x3B},
 912          {104, 0x3B},
 913          {98, 0x3B},
 914          {110, 0x3A},
 915          {104, 0x3A},
 916          {98, 0x3A},
 917          {110, 0x39},
 918          {104, 0x39},
 919          {98, 0x39},
 920          {110, 0x38},
 921          {104, 0x38},
 922          {98, 0x38},
 923          {110, 0x37},
 924          {104, 0x37},
 925          {98, 0x37},
 926          {110, 0x36},
 927          {104, 0x36},
 928          {98, 0x36},
 929          {110, 0x35},
 930          {104, 0x35},
 931          {98, 0x35},
 932          {110, 0x34},
 933          {104, 0x34},
 934          {98, 0x34},
 935          {110, 0x33},
 936          {104, 0x33},
 937          {98, 0x33},
 938          {110, 0x32},
 939          {104, 0x32},
 940          {98, 0x32},
 941          {110, 0x31},
 942          {104, 0x31},
 943          {98, 0x31},
 944          {110, 0x30},
 945          {104, 0x30},
 946          {98, 0x30},
 947          {110, 0x25},
 948          {104, 0x25},
 949          {98, 0x25},
 950          {110, 0x24},
 951          {104, 0x24},
 952          {98, 0x24},
 953          {110, 0x23},
 954          {104, 0x23},
 955          {98, 0x23},
 956          {110, 0x22},
 957          {104, 0x18},
 958          {98, 0x18},
 959          {110, 0x17},
 960          {104, 0x17},
 961          {98, 0x17},
 962          {110, 0x16},
 963          {104, 0x16},
 964          {98, 0x16},
 965          {110, 0x15},
 966          {104, 0x15},
 967          {98, 0x15},
 968          {110, 0x14},
 969          {104, 0x14},
 970          {98, 0x14},
 971          {110, 0x13},
 972          {104, 0x13},
 973          {98, 0x13},
 974          {110, 0x12},
 975          {104, 0x08},
 976          {98, 0x08},
 977          {110, 0x07},
 978          {104, 0x07},
 979          {98, 0x07},
 980          {110, 0x06},
 981          {104, 0x06},
 982          {98, 0x06},
 983          {110, 0x05},
 984          {104, 0x05},
 985          {98, 0x05},
 986          {110, 0x04},
 987          {104, 0x04},
 988          {98, 0x04},
 989          {110, 0x03},
 990          {104, 0x03},
 991          {98, 0x03},
 992          {110, 0x02},
 993          {104, 0x02},
 994          {98, 0x02},
 995          {110, 0x01},
 996          {104, 0x01},
 997          {98, 0x01},
 998          {110, 0x00},
 999          {104, 0x00},
1000          {98, 0x00},
1001          {93, 0x00},
1002          {88, 0x00},
1003          {83, 0x00},
1004          {78, 0x00},
1005          },
1006         /* 2.4GHz power gain index table */
1007         {
1008          {110, 0x3f},           /* highest txpower */
1009          {104, 0x3f},
1010          {98, 0x3f},
1011          {110, 0x3e},
1012          {104, 0x3e},
1013          {98, 0x3e},
1014          {110, 0x3d},
1015          {104, 0x3d},
1016          {98, 0x3d},
1017          {110, 0x3c},
1018          {104, 0x3c},
1019          {98, 0x3c},
1020          {110, 0x3b},
1021          {104, 0x3b},
1022          {98, 0x3b},
1023          {110, 0x3a},
1024          {104, 0x3a},
1025          {98, 0x3a},
1026          {110, 0x39},
1027          {104, 0x39},
1028          {98, 0x39},
1029          {110, 0x38},
1030          {104, 0x38},
1031          {98, 0x38},
1032          {110, 0x37},
1033          {104, 0x37},
1034          {98, 0x37},
1035          {110, 0x36},
1036          {104, 0x36},
1037          {98, 0x36},
1038          {110, 0x35},
1039          {104, 0x35},
1040          {98, 0x35},
1041          {110, 0x34},
1042          {104, 0x34},
1043          {98, 0x34},
1044          {110, 0x33},
1045          {104, 0x33},
1046          {98, 0x33},
1047          {110, 0x32},
1048          {104, 0x32},
1049          {98, 0x32},
1050          {110, 0x31},
1051          {104, 0x31},
1052          {98, 0x31},
1053          {110, 0x30},
1054          {104, 0x30},
1055          {98, 0x30},
1056          {110, 0x6},
1057          {104, 0x6},
1058          {98, 0x6},
1059          {110, 0x5},
1060          {104, 0x5},
1061          {98, 0x5},
1062          {110, 0x4},
1063          {104, 0x4},
1064          {98, 0x4},
1065          {110, 0x3},
1066          {104, 0x3},
1067          {98, 0x3},
1068          {110, 0x2},
1069          {104, 0x2},
1070          {98, 0x2},
1071          {110, 0x1},
1072          {104, 0x1},
1073          {98, 0x1},
1074          {110, 0x0},
1075          {104, 0x0},
1076          {98, 0x0},
1077          {97, 0},
1078          {96, 0},
1079          {95, 0},
1080          {94, 0},
1081          {93, 0},
1082          {92, 0},
1083          {91, 0},
1084          {90, 0},
1085          {89, 0},
1086          {88, 0},
1087          {87, 0},
1088          {86, 0},
1089          {85, 0},
1090          {84, 0},
1091          {83, 0},
1092          {82, 0},
1093          {81, 0},
1094          {80, 0},
1095          {79, 0},
1096          {78, 0},
1097          {77, 0},
1098          {76, 0},
1099          {75, 0},
1100          {74, 0},
1101          {73, 0},
1102          {72, 0},
1103          {71, 0},
1104          {70, 0},
1105          {69, 0},
1106          {68, 0},
1107          {67, 0},
1108          {66, 0},
1109          {65, 0},
1110          {64, 0},
1111          {63, 0},
1112          {62, 0},
1113          {61, 0},
1114          {60, 0},
1115          {59, 0},
1116          }
1117 };
1118
1119 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1120                                     u8 is_ht40, u8 ctrl_chan_high,
1121                                     struct iwl4965_tx_power_db *tx_power_tbl)
1122 {
1123         u8 saturation_power;
1124         s32 target_power;
1125         s32 user_target_power;
1126         s32 power_limit;
1127         s32 current_temp;
1128         s32 reg_limit;
1129         s32 current_regulatory;
1130         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1131         int i;
1132         int c;
1133         const struct iwl_channel_info *ch_info = NULL;
1134         struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1135         const struct iwl_eeprom_calib_measure *measurement;
1136         s16 voltage;
1137         s32 init_voltage;
1138         s32 voltage_compensation;
1139         s32 degrees_per_05db_num;
1140         s32 degrees_per_05db_denom;
1141         s32 factory_temp;
1142         s32 temperature_comp[2];
1143         s32 factory_gain_index[2];
1144         s32 factory_actual_pwr[2];
1145         s32 power_index;
1146
1147         /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units
1148          *   are used for indexing into txpower table) */
1149         user_target_power = 2 * priv->tx_power_user_lmt;
1150
1151         /* Get current (RXON) channel, band, width */
1152         IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band,
1153                           is_ht40);
1154
1155         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1156
1157         if (!is_channel_valid(ch_info))
1158                 return -EINVAL;
1159
1160         /* get txatten group, used to select 1) thermal txpower adjustment
1161          *   and 2) mimo txpower balance between Tx chains. */
1162         txatten_grp = iwl4965_get_tx_atten_grp(channel);
1163         if (txatten_grp < 0) {
1164                 IWL_ERR(priv, "Can't find txatten group for channel %d.\n",
1165                           channel);
1166                 return -EINVAL;
1167         }
1168
1169         IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n",
1170                           channel, txatten_grp);
1171
1172         if (is_ht40) {
1173                 if (ctrl_chan_high)
1174                         channel -= 2;
1175                 else
1176                         channel += 2;
1177         }
1178
1179         /* hardware txpower limits ...
1180          * saturation (clipping distortion) txpowers are in half-dBm */
1181         if (band)
1182                 saturation_power = priv->calib_info->saturation_power24;
1183         else
1184                 saturation_power = priv->calib_info->saturation_power52;
1185
1186         if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1187             saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1188                 if (band)
1189                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1190                 else
1191                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1192         }
1193
1194         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1195          *   max_power_avg values are in dBm, convert * 2 */
1196         if (is_ht40)
1197                 reg_limit = ch_info->ht40_max_power_avg * 2;
1198         else
1199                 reg_limit = ch_info->max_power_avg * 2;
1200
1201         if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1202             (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1203                 if (band)
1204                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1205                 else
1206                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1207         }
1208
1209         /* Interpolate txpower calibration values for this channel,
1210          *   based on factory calibration tests on spaced channels. */
1211         iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1212
1213         /* calculate tx gain adjustment based on power supply voltage */
1214         voltage = le16_to_cpu(priv->calib_info->voltage);
1215         init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1216         voltage_compensation =
1217             iwl4965_get_voltage_compensation(voltage, init_voltage);
1218
1219         IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n",
1220                           init_voltage,
1221                           voltage, voltage_compensation);
1222
1223         /* get current temperature (Celsius) */
1224         current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1225         current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1226         current_temp = KELVIN_TO_CELSIUS(current_temp);
1227
1228         /* select thermal txpower adjustment params, based on channel group
1229          *   (same frequency group used for mimo txatten adjustment) */
1230         degrees_per_05db_num =
1231             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1232         degrees_per_05db_denom =
1233             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1234
1235         /* get per-chain txpower values from factory measurements */
1236         for (c = 0; c < 2; c++) {
1237                 measurement = &ch_eeprom_info.measurements[c][1];
1238
1239                 /* txgain adjustment (in half-dB steps) based on difference
1240                  *   between factory and current temperature */
1241                 factory_temp = measurement->temperature;
1242                 iwl4965_math_div_round((current_temp - factory_temp) *
1243                                        degrees_per_05db_denom,
1244                                        degrees_per_05db_num,
1245                                        &temperature_comp[c]);
1246
1247                 factory_gain_index[c] = measurement->gain_idx;
1248                 factory_actual_pwr[c] = measurement->actual_pow;
1249
1250                 IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c);
1251                 IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, "
1252                                   "curr tmp %d, comp %d steps\n",
1253                                   factory_temp, current_temp,
1254                                   temperature_comp[c]);
1255
1256                 IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n",
1257                                   factory_gain_index[c],
1258                                   factory_actual_pwr[c]);
1259         }
1260
1261         /* for each of 33 bit-rates (including 1 for CCK) */
1262         for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1263                 u8 is_mimo_rate;
1264                 union iwl4965_tx_power_dual_stream tx_power;
1265
1266                 /* for mimo, reduce each chain's txpower by half
1267                  * (3dB, 6 steps), so total output power is regulatory
1268                  * compliant. */
1269                 if (i & 0x8) {
1270                         current_regulatory = reg_limit -
1271                             IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1272                         is_mimo_rate = 1;
1273                 } else {
1274                         current_regulatory = reg_limit;
1275                         is_mimo_rate = 0;
1276                 }
1277
1278                 /* find txpower limit, either hardware or regulatory */
1279                 power_limit = saturation_power - back_off_table[i];
1280                 if (power_limit > current_regulatory)
1281                         power_limit = current_regulatory;
1282
1283                 /* reduce user's txpower request if necessary
1284                  * for this rate on this channel */
1285                 target_power = user_target_power;
1286                 if (target_power > power_limit)
1287                         target_power = power_limit;
1288
1289                 IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n",
1290                                   i, saturation_power - back_off_table[i],
1291                                   current_regulatory, user_target_power,
1292                                   target_power);
1293
1294                 /* for each of 2 Tx chains (radio transmitters) */
1295                 for (c = 0; c < 2; c++) {
1296                         s32 atten_value;
1297
1298                         if (is_mimo_rate)
1299                                 atten_value =
1300                                     (s32)le32_to_cpu(priv->card_alive_init.
1301                                     tx_atten[txatten_grp][c]);
1302                         else
1303                                 atten_value = 0;
1304
1305                         /* calculate index; higher index means lower txpower */
1306                         power_index = (u8) (factory_gain_index[c] -
1307                                             (target_power -
1308                                              factory_actual_pwr[c]) -
1309                                             temperature_comp[c] -
1310                                             voltage_compensation +
1311                                             atten_value);
1312
1313 /*                      IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n",
1314                                                 power_index); */
1315
1316                         if (power_index < get_min_power_index(i, band))
1317                                 power_index = get_min_power_index(i, band);
1318
1319                         /* adjust 5 GHz index to support negative indexes */
1320                         if (!band)
1321                                 power_index += 9;
1322
1323                         /* CCK, rate 32, reduce txpower for CCK */
1324                         if (i == POWER_TABLE_CCK_ENTRY)
1325                                 power_index +=
1326                                     IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1327
1328                         /* stay within the table! */
1329                         if (power_index > 107) {
1330                                 IWL_WARN(priv, "txpower index %d > 107\n",
1331                                             power_index);
1332                                 power_index = 107;
1333                         }
1334                         if (power_index < 0) {
1335                                 IWL_WARN(priv, "txpower index %d < 0\n",
1336                                             power_index);
1337                                 power_index = 0;
1338                         }
1339
1340                         /* fill txpower command for this rate/chain */
1341                         tx_power.s.radio_tx_gain[c] =
1342                                 gain_table[band][power_index].radio;
1343                         tx_power.s.dsp_predis_atten[c] =
1344                                 gain_table[band][power_index].dsp;
1345
1346                         IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d "
1347                                           "gain 0x%02x dsp %d\n",
1348                                           c, atten_value, power_index,
1349                                         tx_power.s.radio_tx_gain[c],
1350                                         tx_power.s.dsp_predis_atten[c]);
1351                 } /* for each chain */
1352
1353                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1354
1355         } /* for each rate */
1356
1357         return 0;
1358 }
1359
1360 /**
1361  * iwl4965_send_tx_power - Configure the TXPOWER level user limit
1362  *
1363  * Uses the active RXON for channel, band, and characteristics (ht40, high)
1364  * The power limit is taken from priv->tx_power_user_lmt.
1365  */
1366 static int iwl4965_send_tx_power(struct iwl_priv *priv)
1367 {
1368         struct iwl4965_txpowertable_cmd cmd = { 0 };
1369         int ret;
1370         u8 band = 0;
1371         bool is_ht40 = false;
1372         u8 ctrl_chan_high = 0;
1373
1374         if (test_bit(STATUS_SCANNING, &priv->status)) {
1375                 /* If this gets hit a lot, switch it to a BUG() and catch
1376                  * the stack trace to find out who is calling this during
1377                  * a scan. */
1378                 IWL_WARN(priv, "TX Power requested while scanning!\n");
1379                 return -EAGAIN;
1380         }
1381
1382         band = priv->band == IEEE80211_BAND_2GHZ;
1383
1384         is_ht40 =  is_ht40_channel(priv->active_rxon.flags);
1385
1386         if (is_ht40 &&
1387             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1388                 ctrl_chan_high = 1;
1389
1390         cmd.band = band;
1391         cmd.channel = priv->active_rxon.channel;
1392
1393         ret = iwl4965_fill_txpower_tbl(priv, band,
1394                                 le16_to_cpu(priv->active_rxon.channel),
1395                                 is_ht40, ctrl_chan_high, &cmd.tx_power);
1396         if (ret)
1397                 goto out;
1398
1399         ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1400
1401 out:
1402         return ret;
1403 }
1404
1405 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1406 {
1407         int ret = 0;
1408         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1409         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1410         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1411
1412         if ((rxon1->flags == rxon2->flags) &&
1413             (rxon1->filter_flags == rxon2->filter_flags) &&
1414             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1415             (rxon1->ofdm_ht_single_stream_basic_rates ==
1416              rxon2->ofdm_ht_single_stream_basic_rates) &&
1417             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1418              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1419             (rxon1->rx_chain == rxon2->rx_chain) &&
1420             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1421                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1422                 return 0;
1423         }
1424
1425         rxon_assoc.flags = priv->staging_rxon.flags;
1426         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1427         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1428         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1429         rxon_assoc.reserved = 0;
1430         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1431             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1432         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1433             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1434         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1435
1436         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1437                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1438         if (ret)
1439                 return ret;
1440
1441         return ret;
1442 }
1443
1444 static int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1445 {
1446         int rc;
1447         u8 band = 0;
1448         bool is_ht40 = false;
1449         u8 ctrl_chan_high = 0;
1450         struct iwl4965_channel_switch_cmd cmd;
1451         const struct iwl_channel_info *ch_info;
1452
1453         band = priv->band == IEEE80211_BAND_2GHZ;
1454
1455         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1456
1457         is_ht40 = is_ht40_channel(priv->staging_rxon.flags);
1458
1459         if (is_ht40 &&
1460             (priv->staging_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1461                 ctrl_chan_high = 1;
1462
1463         cmd.band = band;
1464         cmd.expect_beacon = 0;
1465         cmd.channel = cpu_to_le16(channel);
1466         cmd.rxon_flags = priv->staging_rxon.flags;
1467         cmd.rxon_filter_flags = priv->staging_rxon.filter_flags;
1468         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1469         if (ch_info)
1470                 cmd.expect_beacon = is_channel_radar(ch_info);
1471         else {
1472                 IWL_ERR(priv, "invalid channel switch from %u to %u\n",
1473                         priv->active_rxon.channel, channel);
1474                 return -EFAULT;
1475         }
1476
1477         rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_ht40,
1478                                       ctrl_chan_high, &cmd.tx_power);
1479         if (rc) {
1480                 IWL_DEBUG_11H(priv, "error:%d  fill txpower_tbl\n", rc);
1481                 return rc;
1482         }
1483
1484         priv->switch_rxon.channel = cpu_to_le16(channel);
1485         priv->switch_rxon.switch_in_progress = true;
1486
1487         return iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1488 }
1489
1490 /**
1491  * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1492  */
1493 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
1494                                             struct iwl_tx_queue *txq,
1495                                             u16 byte_cnt)
1496 {
1497         struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
1498         int txq_id = txq->q.id;
1499         int write_ptr = txq->q.write_ptr;
1500         int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
1501         __le16 bc_ent;
1502
1503         WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX);
1504
1505         bc_ent = cpu_to_le16(len & 0xFFF);
1506         /* Set up byte count within first 256 entries */
1507         scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
1508
1509         /* If within first 64 entries, duplicate at end */
1510         if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
1511                 scd_bc_tbl[txq_id].
1512                         tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
1513 }
1514
1515 /**
1516  * sign_extend - Sign extend a value using specified bit as sign-bit
1517  *
1518  * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1519  * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1520  *
1521  * @param oper value to sign extend
1522  * @param index 0 based bit index (0<=index<32) to sign bit
1523  */
1524 static s32 sign_extend(u32 oper, int index)
1525 {
1526         u8 shift = 31 - index;
1527
1528         return (s32)(oper << shift) >> shift;
1529 }
1530
1531 /**
1532  * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin)
1533  * @statistics: Provides the temperature reading from the uCode
1534  *
1535  * A return of <0 indicates bogus data in the statistics
1536  */
1537 static int iwl4965_hw_get_temperature(struct iwl_priv *priv)
1538 {
1539         s32 temperature;
1540         s32 vt;
1541         s32 R1, R2, R3;
1542         u32 R4;
1543
1544         if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
1545                 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)) {
1546                 IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n");
1547                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
1548                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
1549                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
1550                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
1551         } else {
1552                 IWL_DEBUG_TEMP(priv, "Running temperature calibration\n");
1553                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
1554                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
1555                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
1556                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
1557         }
1558
1559         /*
1560          * Temperature is only 23 bits, so sign extend out to 32.
1561          *
1562          * NOTE If we haven't received a statistics notification yet
1563          * with an updated temperature, use R4 provided to us in the
1564          * "initialize" ALIVE response.
1565          */
1566         if (!test_bit(STATUS_TEMPERATURE, &priv->status))
1567                 vt = sign_extend(R4, 23);
1568         else
1569                 vt = sign_extend(
1570                         le32_to_cpu(priv->statistics.general.temperature), 23);
1571
1572         IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt);
1573
1574         if (R3 == R1) {
1575                 IWL_ERR(priv, "Calibration conflict R1 == R3\n");
1576                 return -1;
1577         }
1578
1579         /* Calculate temperature in degrees Kelvin, adjust by 97%.
1580          * Add offset to center the adjustment around 0 degrees Centigrade. */
1581         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
1582         temperature /= (R3 - R1);
1583         temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET;
1584
1585         IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n",
1586                         temperature, KELVIN_TO_CELSIUS(temperature));
1587
1588         return temperature;
1589 }
1590
1591 /* Adjust Txpower only if temperature variance is greater than threshold. */
1592 #define IWL_TEMPERATURE_THRESHOLD   3
1593
1594 /**
1595  * iwl4965_is_temp_calib_needed - determines if new calibration is needed
1596  *
1597  * If the temperature changed has changed sufficiently, then a recalibration
1598  * is needed.
1599  *
1600  * Assumes caller will replace priv->last_temperature once calibration
1601  * executed.
1602  */
1603 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
1604 {
1605         int temp_diff;
1606
1607         if (!test_bit(STATUS_STATISTICS, &priv->status)) {
1608                 IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n");
1609                 return 0;
1610         }
1611
1612         temp_diff = priv->temperature - priv->last_temperature;
1613
1614         /* get absolute value */
1615         if (temp_diff < 0) {
1616                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d\n", temp_diff);
1617                 temp_diff = -temp_diff;
1618         } else if (temp_diff == 0)
1619                 IWL_DEBUG_POWER(priv, "Temperature unchanged\n");
1620         else
1621                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d\n", temp_diff);
1622
1623         if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
1624                 IWL_DEBUG_POWER(priv, " => thermal txpower calib not needed\n");
1625                 return 0;
1626         }
1627
1628         IWL_DEBUG_POWER(priv, " => thermal txpower calib needed\n");
1629
1630         return 1;
1631 }
1632
1633 static void iwl4965_temperature_calib(struct iwl_priv *priv)
1634 {
1635         s32 temp;
1636
1637         temp = iwl4965_hw_get_temperature(priv);
1638         if (temp < 0)
1639                 return;
1640
1641         if (priv->temperature != temp) {
1642                 if (priv->temperature)
1643                         IWL_DEBUG_TEMP(priv, "Temperature changed "
1644                                        "from %dC to %dC\n",
1645                                        KELVIN_TO_CELSIUS(priv->temperature),
1646                                        KELVIN_TO_CELSIUS(temp));
1647                 else
1648                         IWL_DEBUG_TEMP(priv, "Temperature "
1649                                        "initialized to %dC\n",
1650                                        KELVIN_TO_CELSIUS(temp));
1651         }
1652
1653         priv->temperature = temp;
1654         iwl_tt_handler(priv);
1655         set_bit(STATUS_TEMPERATURE, &priv->status);
1656
1657         if (!priv->disable_tx_power_cal &&
1658              unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
1659              iwl4965_is_temp_calib_needed(priv))
1660                 queue_work(priv->workqueue, &priv->txpower_work);
1661 }
1662
1663 /**
1664  * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
1665  */
1666 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
1667                                             u16 txq_id)
1668 {
1669         /* Simply stop the queue, but don't change any configuration;
1670          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
1671         iwl_write_prph(priv,
1672                 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
1673                 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
1674                 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
1675 }
1676
1677 /**
1678  * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE
1679  * priv->lock must be held by the caller
1680  */
1681 static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
1682                                    u16 ssn_idx, u8 tx_fifo)
1683 {
1684         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1685             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1686              <= txq_id)) {
1687                 IWL_WARN(priv,
1688                         "queue number out of range: %d, must be %d to %d\n",
1689                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1690                         IWL49_FIRST_AMPDU_QUEUE +
1691                         priv->cfg->num_of_ampdu_queues - 1);
1692                 return -EINVAL;
1693         }
1694
1695         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1696
1697         iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1698
1699         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1700         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1701         /* supposes that ssn_idx is valid (!= 0xFFF) */
1702         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1703
1704         iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1705         iwl_txq_ctx_deactivate(priv, txq_id);
1706         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
1707
1708         return 0;
1709 }
1710
1711 /**
1712  * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
1713  */
1714 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
1715                                         u16 txq_id)
1716 {
1717         u32 tbl_dw_addr;
1718         u32 tbl_dw;
1719         u16 scd_q2ratid;
1720
1721         scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
1722
1723         tbl_dw_addr = priv->scd_base_addr +
1724                         IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
1725
1726         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
1727
1728         if (txq_id & 0x1)
1729                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
1730         else
1731                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
1732
1733         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
1734
1735         return 0;
1736 }
1737
1738
1739 /**
1740  * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
1741  *
1742  * NOTE:  txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE,
1743  *        i.e. it must be one of the higher queues used for aggregation
1744  */
1745 static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id,
1746                                   int tx_fifo, int sta_id, int tid, u16 ssn_idx)
1747 {
1748         unsigned long flags;
1749         u16 ra_tid;
1750
1751         if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) ||
1752             (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues
1753              <= txq_id)) {
1754                 IWL_WARN(priv,
1755                         "queue number out of range: %d, must be %d to %d\n",
1756                         txq_id, IWL49_FIRST_AMPDU_QUEUE,
1757                         IWL49_FIRST_AMPDU_QUEUE +
1758                         priv->cfg->num_of_ampdu_queues - 1);
1759                 return -EINVAL;
1760         }
1761
1762         ra_tid = BUILD_RAxTID(sta_id, tid);
1763
1764         /* Modify device's station table to Tx this TID */
1765         iwl_sta_tx_modify_enable_tid(priv, sta_id, tid);
1766
1767         spin_lock_irqsave(&priv->lock, flags);
1768
1769         /* Stop this Tx queue before configuring it */
1770         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
1771
1772         /* Map receiver-address / traffic-ID to this queue */
1773         iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
1774
1775         /* Set this queue as a chain-building queue */
1776         iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
1777
1778         /* Place first TFD at index corresponding to start sequence number.
1779          * Assumes that ssn_idx is valid (!= 0xFFF) */
1780         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1781         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1782         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
1783
1784         /* Set up Tx window size and frame limit for this queue */
1785         iwl_write_targ_mem(priv,
1786                 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
1787                 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
1788                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
1789
1790         iwl_write_targ_mem(priv, priv->scd_base_addr +
1791                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
1792                 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
1793                 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
1794
1795         iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
1796
1797         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1798         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
1799
1800         spin_unlock_irqrestore(&priv->lock, flags);
1801
1802         return 0;
1803 }
1804
1805
1806 static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
1807 {
1808         switch (cmd_id) {
1809         case REPLY_RXON:
1810                 return (u16) sizeof(struct iwl4965_rxon_cmd);
1811         default:
1812                 return len;
1813         }
1814 }
1815
1816 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
1817 {
1818         struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
1819         addsta->mode = cmd->mode;
1820         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
1821         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
1822         addsta->station_flags = cmd->station_flags;
1823         addsta->station_flags_msk = cmd->station_flags_msk;
1824         addsta->tid_disable_tx = cmd->tid_disable_tx;
1825         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
1826         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
1827         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
1828         addsta->sleep_tx_count = cmd->sleep_tx_count;
1829         addsta->reserved1 = cpu_to_le16(0);
1830         addsta->reserved2 = cpu_to_le16(0);
1831
1832         return (u16)sizeof(struct iwl4965_addsta_cmd);
1833 }
1834
1835 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1836 {
1837         return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN;
1838 }
1839
1840 /**
1841  * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue
1842  */
1843 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1844                                       struct iwl_ht_agg *agg,
1845                                       struct iwl4965_tx_resp *tx_resp,
1846                                       int txq_id, u16 start_idx)
1847 {
1848         u16 status;
1849         struct agg_tx_status *frame_status = tx_resp->u.agg_status;
1850         struct ieee80211_tx_info *info = NULL;
1851         struct ieee80211_hdr *hdr = NULL;
1852         u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1853         int i, sh, idx;
1854         u16 seq;
1855         if (agg->wait_for_ba)
1856                 IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
1857
1858         agg->frame_count = tx_resp->frame_count;
1859         agg->start_idx = start_idx;
1860         agg->rate_n_flags = rate_n_flags;
1861         agg->bitmap = 0;
1862
1863         /* num frames attempted by Tx command */
1864         if (agg->frame_count == 1) {
1865                 /* Only one frame was attempted; no block-ack will arrive */
1866                 status = le16_to_cpu(frame_status[0].status);
1867                 idx = start_idx;
1868
1869                 /* FIXME: code repetition */
1870                 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
1871                                    agg->frame_count, agg->start_idx, idx);
1872
1873                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1874                 info->status.rates[0].count = tx_resp->failure_frame + 1;
1875                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1876                 info->flags |= iwl_tx_status_to_mac80211(status);
1877                 iwlagn_hwrate_to_tx_control(priv, rate_n_flags, info);
1878                 /* FIXME: code repetition end */
1879
1880                 IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n",
1881                                     status & 0xff, tx_resp->failure_frame);
1882                 IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags);
1883
1884                 agg->wait_for_ba = 0;
1885         } else {
1886                 /* Two or more frames were attempted; expect block-ack */
1887                 u64 bitmap = 0;
1888                 int start = agg->start_idx;
1889
1890                 /* Construct bit-map of pending frames within Tx window */
1891                 for (i = 0; i < agg->frame_count; i++) {
1892                         u16 sc;
1893                         status = le16_to_cpu(frame_status[i].status);
1894                         seq  = le16_to_cpu(frame_status[i].sequence);
1895                         idx = SEQ_TO_INDEX(seq);
1896                         txq_id = SEQ_TO_QUEUE(seq);
1897
1898                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1899                                       AGG_TX_STATE_ABORT_MSK))
1900                                 continue;
1901
1902                         IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
1903                                            agg->frame_count, txq_id, idx);
1904
1905                         hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
1906                         if (!hdr) {
1907                                 IWL_ERR(priv,
1908                                         "BUG_ON idx doesn't point to valid skb"
1909                                         " idx=%d, txq_id=%d\n", idx, txq_id);
1910                                 return -1;
1911                         }
1912
1913                         sc = le16_to_cpu(hdr->seq_ctrl);
1914                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1915                                 IWL_ERR(priv,
1916                                         "BUG_ON idx doesn't match seq control"
1917                                         " idx=%d, seq_idx=%d, seq=%d\n",
1918                                         idx, SEQ_TO_SN(sc), hdr->seq_ctrl);
1919                                 return -1;
1920                         }
1921
1922                         IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
1923                                            i, idx, SEQ_TO_SN(sc));
1924
1925                         sh = idx - start;
1926                         if (sh > 64) {
1927                                 sh = (start - idx) + 0xff;
1928                                 bitmap = bitmap << sh;
1929                                 sh = 0;
1930                                 start = idx;
1931                         } else if (sh < -64)
1932                                 sh  = 0xff - (start - idx);
1933                         else if (sh < 0) {
1934                                 sh = start - idx;
1935                                 start = idx;
1936                                 bitmap = bitmap << sh;
1937                                 sh = 0;
1938                         }
1939                         bitmap |= 1ULL << sh;
1940                         IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
1941                                            start, (unsigned long long)bitmap);
1942                 }
1943
1944                 agg->bitmap = bitmap;
1945                 agg->start_idx = start;
1946                 IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
1947                                    agg->frame_count, agg->start_idx,
1948                                    (unsigned long long)agg->bitmap);
1949
1950                 if (bitmap)
1951                         agg->wait_for_ba = 1;
1952         }
1953         return 0;
1954 }
1955
1956 static u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
1957 {
1958         int i;
1959         int start = 0;
1960         int ret = IWL_INVALID_STATION;
1961         unsigned long flags;
1962
1963         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
1964             (priv->iw_mode == NL80211_IFTYPE_AP))
1965                 start = IWL_STA_ID;
1966
1967         if (is_broadcast_ether_addr(addr))
1968                 return priv->hw_params.bcast_sta_id;
1969
1970         spin_lock_irqsave(&priv->sta_lock, flags);
1971         for (i = start; i < priv->hw_params.max_stations; i++)
1972                 if (priv->stations[i].used &&
1973                     (!compare_ether_addr(priv->stations[i].sta.sta.addr,
1974                                          addr))) {
1975                         ret = i;
1976                         goto out;
1977                 }
1978
1979         IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
1980                               addr, priv->num_stations);
1981
1982  out:
1983         /*
1984          * It may be possible that more commands interacting with stations
1985          * arrive before we completed processing the adding of
1986          * station
1987          */
1988         if (ret != IWL_INVALID_STATION &&
1989             (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) ||
1990              ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) &&
1991               (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) {
1992                 IWL_ERR(priv, "Requested station info for sta %d before ready.\n",
1993                         ret);
1994                 ret = IWL_INVALID_STATION;
1995         }
1996         spin_unlock_irqrestore(&priv->sta_lock, flags);
1997         return ret;
1998 }
1999
2000 static int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2001 {
2002         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
2003                 return IWL_AP_ID;
2004         } else {
2005                 u8 *da = ieee80211_get_DA(hdr);
2006                 return iwl_find_station(priv, da);
2007         }
2008 }
2009
2010 /**
2011  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
2012  */
2013 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
2014                                 struct iwl_rx_mem_buffer *rxb)
2015 {
2016         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2017         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2018         int txq_id = SEQ_TO_QUEUE(sequence);
2019         int index = SEQ_TO_INDEX(sequence);
2020         struct iwl_tx_queue *txq = &priv->txq[txq_id];
2021         struct ieee80211_hdr *hdr;
2022         struct ieee80211_tx_info *info;
2023         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
2024         u32  status = le32_to_cpu(tx_resp->u.status);
2025         int uninitialized_var(tid);
2026         int sta_id;
2027         int freed;
2028         u8 *qc = NULL;
2029
2030         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
2031                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
2032                           "is out of range [0-%d] %d %d\n", txq_id,
2033                           index, txq->q.n_bd, txq->q.write_ptr,
2034                           txq->q.read_ptr);
2035                 return;
2036         }
2037
2038         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
2039         memset(&info->status, 0, sizeof(info->status));
2040
2041         hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
2042         if (ieee80211_is_data_qos(hdr->frame_control)) {
2043                 qc = ieee80211_get_qos_ctl(hdr);
2044                 tid = qc[0] & 0xf;
2045         }
2046
2047         sta_id = iwl_get_ra_sta_id(priv, hdr);
2048         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
2049                 IWL_ERR(priv, "Station not known\n");
2050                 return;
2051         }
2052
2053         if (txq->sched_retry) {
2054                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
2055                 struct iwl_ht_agg *agg = NULL;
2056
2057                 WARN_ON(!qc);
2058
2059                 agg = &priv->stations[sta_id].tid[tid].agg;
2060
2061                 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
2062
2063                 /* check if BAR is needed */
2064                 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
2065                         info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
2066
2067                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
2068                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
2069                         IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn "
2070                                            "%d index %d\n", scd_ssn , index);
2071                         freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
2072                         if (qc)
2073                                 iwl_free_tfds_in_queue(priv, sta_id,
2074                                                        tid, freed);
2075
2076                         if (priv->mac80211_registered &&
2077                             (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
2078                             (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) {
2079                                 if (agg->state == IWL_AGG_OFF)
2080                                         iwl_wake_queue(priv, txq_id);
2081                                 else
2082                                         iwl_wake_queue(priv, txq->swq_id);
2083                         }
2084                 }
2085         } else {
2086                 info->status.rates[0].count = tx_resp->failure_frame + 1;
2087                 info->flags |= iwl_tx_status_to_mac80211(status);
2088                 iwlagn_hwrate_to_tx_control(priv,
2089                                         le32_to_cpu(tx_resp->rate_n_flags),
2090                                         info);
2091
2092                 IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) "
2093                                    "rate_n_flags 0x%x retries %d\n",
2094                                    txq_id,
2095                                    iwl_get_tx_fail_reason(status), status,
2096                                    le32_to_cpu(tx_resp->rate_n_flags),
2097                                    tx_resp->failure_frame);
2098
2099                 freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
2100                 if (qc && likely(sta_id != IWL_INVALID_STATION))
2101                         iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
2102                 else if (sta_id == IWL_INVALID_STATION)
2103                         IWL_DEBUG_TX_REPLY(priv, "Station not known\n");
2104
2105                 if (priv->mac80211_registered &&
2106                     (iwl_queue_space(&txq->q) > txq->q.low_mark))
2107                         iwl_wake_queue(priv, txq_id);
2108         }
2109         if (qc && likely(sta_id != IWL_INVALID_STATION))
2110                 iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
2111
2112         iwl_check_abort_status(priv, tx_resp->frame_count, status);
2113 }
2114
2115 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2116                              struct iwl_rx_phy_res *rx_resp)
2117 {
2118         /* data from PHY/DSP regarding signal strength, etc.,
2119          *   contents are always there, not configurable by host.  */
2120         struct iwl4965_rx_non_cfg_phy *ncphy =
2121             (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
2122         u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK)
2123                         >> IWL49_AGC_DB_POS;
2124
2125         u32 valid_antennae =
2126             (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK)
2127                         >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET;
2128         u8 max_rssi = 0;
2129         u32 i;
2130
2131         /* Find max rssi among 3 possible receivers.
2132          * These values are measured by the digital signal processor (DSP).
2133          * They should stay fairly constant even as the signal strength varies,
2134          *   if the radio's automatic gain control (AGC) is working right.
2135          * AGC value (see below) will provide the "interesting" info. */
2136         for (i = 0; i < 3; i++)
2137                 if (valid_antennae & (1 << i))
2138                         max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2139
2140         IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2141                 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2142                 max_rssi, agc);
2143
2144         /* dBm = max_rssi dB - agc dB - constant.
2145          * Higher AGC (higher radio gain) means lower signal. */
2146         return max_rssi - agc - IWLAGN_RSSI_OFFSET;
2147 }
2148
2149
2150 /* Set up 4965-specific Rx frame reply handlers */
2151 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
2152 {
2153         /* Legacy Rx frames */
2154         priv->rx_handlers[REPLY_RX] = iwlagn_rx_reply_rx;
2155         /* Tx response */
2156         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2157 }
2158
2159 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
2160 {
2161         INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
2162 }
2163
2164 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
2165 {
2166         cancel_work_sync(&priv->txpower_work);
2167 }
2168
2169 static struct iwl_hcmd_ops iwl4965_hcmd = {
2170         .rxon_assoc = iwl4965_send_rxon_assoc,
2171         .commit_rxon = iwl_commit_rxon,
2172         .set_rxon_chain = iwl_set_rxon_chain,
2173         .send_bt_config = iwl_send_bt_config,
2174 };
2175
2176 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
2177         .get_hcmd_size = iwl4965_get_hcmd_size,
2178         .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
2179         .chain_noise_reset = iwl4965_chain_noise_reset,
2180         .gain_computation = iwl4965_gain_computation,
2181         .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag,
2182         .calc_rssi = iwl4965_calc_rssi,
2183         .request_scan = iwlagn_request_scan,
2184 };
2185
2186 static struct iwl_lib_ops iwl4965_lib = {
2187         .set_hw_params = iwl4965_hw_set_hw_params,
2188         .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
2189         .txq_set_sched = iwl4965_txq_set_sched,
2190         .txq_agg_enable = iwl4965_txq_agg_enable,
2191         .txq_agg_disable = iwl4965_txq_agg_disable,
2192         .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd,
2193         .txq_free_tfd = iwl_hw_txq_free_tfd,
2194         .txq_init = iwl_hw_tx_queue_init,
2195         .rx_handler_setup = iwl4965_rx_handler_setup,
2196         .setup_deferred_work = iwl4965_setup_deferred_work,
2197         .cancel_deferred_work = iwl4965_cancel_deferred_work,
2198         .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
2199         .alive_notify = iwl4965_alive_notify,
2200         .init_alive_start = iwl4965_init_alive_start,
2201         .load_ucode = iwl4965_load_bsm,
2202         .dump_nic_event_log = iwl_dump_nic_event_log,
2203         .dump_nic_error_log = iwl_dump_nic_error_log,
2204         .dump_fh = iwl_dump_fh,
2205         .set_channel_switch = iwl4965_hw_channel_switch,
2206         .apm_ops = {
2207                 .init = iwl_apm_init,
2208                 .stop = iwl_apm_stop,
2209                 .config = iwl4965_nic_config,
2210                 .set_pwr_src = iwl_set_pwr_src,
2211         },
2212         .eeprom_ops = {
2213                 .regulatory_bands = {
2214                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2215                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2216                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2217                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2218                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2219                         EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS,
2220                         EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS
2221                 },
2222                 .verify_signature  = iwlcore_eeprom_verify_signature,
2223                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
2224                 .release_semaphore = iwlcore_eeprom_release_semaphore,
2225                 .calib_version = iwl4965_eeprom_calib_version,
2226                 .query_addr = iwlcore_eeprom_query_addr,
2227         },
2228         .send_tx_power  = iwl4965_send_tx_power,
2229         .update_chain_flags = iwl_update_chain_flags,
2230         .post_associate = iwl_post_associate,
2231         .config_ap = iwl_config_ap,
2232         .isr = iwl_isr_legacy,
2233         .temp_ops = {
2234                 .temperature = iwl4965_temperature_calib,
2235                 .set_ct_kill = iwl4965_set_ct_threshold,
2236         },
2237         .manage_ibss_station = iwlagn_manage_ibss_station,
2238         .debugfs_ops = {
2239                 .rx_stats_read = iwl_ucode_rx_stats_read,
2240                 .tx_stats_read = iwl_ucode_tx_stats_read,
2241                 .general_stats_read = iwl_ucode_general_stats_read,
2242         },
2243         .check_plcp_health = iwl_good_plcp_health,
2244 };
2245
2246 static const struct iwl_ops iwl4965_ops = {
2247         .lib = &iwl4965_lib,
2248         .hcmd = &iwl4965_hcmd,
2249         .utils = &iwl4965_hcmd_utils,
2250         .led = &iwlagn_led_ops,
2251 };
2252
2253 struct iwl_cfg iwl4965_agn_cfg = {
2254         .name = "Intel(R) Wireless WiFi Link 4965AGN",
2255         .fw_name_pre = IWL4965_FW_PRE,
2256         .ucode_api_max = IWL4965_UCODE_API_MAX,
2257         .ucode_api_min = IWL4965_UCODE_API_MIN,
2258         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
2259         .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
2260         .eeprom_ver = EEPROM_4965_EEPROM_VERSION,
2261         .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION,
2262         .ops = &iwl4965_ops,
2263         .num_of_queues = IWL49_NUM_QUEUES,
2264         .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES,
2265         .mod_params = &iwlagn_mod_params,
2266         .valid_tx_ant = ANT_AB,
2267         .valid_rx_ant = ANT_ABC,
2268         .pll_cfg_val = 0,
2269         .set_l0s = true,
2270         .use_bsm = true,
2271         .use_isr_legacy = true,
2272         .ht_greenfield_support = false,
2273         .broken_powersave = true,
2274         .led_compensation = 61,
2275         .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
2276         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF,
2277         .monitor_recover_period = IWL_MONITORING_PERIOD,
2278         .temperature_kelvin = true,
2279         .max_event_log_size = 512,
2280         .tx_power_by_driver = true,
2281         .ucode_tracing = true,
2282         .sensitivity_calib_by_driver = true,
2283         .chain_noise_calib_by_driver = true,
2284         /*
2285          * Force use of chains B and C for scan RX on 5 GHz band
2286          * because the device has off-channel reception on chain A.
2287          */
2288         .scan_antennas[IEEE80211_BAND_5GHZ] = ANT_BC,
2289 };
2290
2291 /* Module firmware */
2292 MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX));
2293