err.no Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-4965.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 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  * James P. Ketrenos <ipw2100-admin@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/version.h>
  30 #include <linux/init.h>
  31 #include <linux/pci.h>
  32 #include <linux/dma-mapping.h>
  33 #include <linux/delay.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
  48 /* module parameters */
  49 static struct iwl_mod_params iwl4965_mod_params = {
  50         .num_of_queues = IWL49_NUM_QUEUES,
  51         .enable_qos = 1,
  52         .amsdu_size_8K = 1,
  53         .restart_fw = 1,
  54         /* the rest are 0 by default */
  55 };
  56
  57 #ifdef CONFIG_IWL4965_HT
  58
  59 static const u16 default_tid_to_tx_fifo[] = {
  60         IWL_TX_FIFO_AC1,
  61         IWL_TX_FIFO_AC0,
  62         IWL_TX_FIFO_AC0,
  63         IWL_TX_FIFO_AC1,
  64         IWL_TX_FIFO_AC2,
  65         IWL_TX_FIFO_AC2,
  66         IWL_TX_FIFO_AC3,
  67         IWL_TX_FIFO_AC3,
  68         IWL_TX_FIFO_NONE,
  69         IWL_TX_FIFO_NONE,
  70         IWL_TX_FIFO_NONE,
  71         IWL_TX_FIFO_NONE,
  72         IWL_TX_FIFO_NONE,
  73         IWL_TX_FIFO_NONE,
  74         IWL_TX_FIFO_NONE,
  75         IWL_TX_FIFO_NONE,
  76         IWL_TX_FIFO_AC3
  77 };
  78
  79 #endif  /*CONFIG_IWL4965_HT */
  80
  81 /* check contents of special bootstrap uCode SRAM */
  82 static int iwl4965_verify_bsm(struct iwl_priv *priv)
  83 {
  84         __le32 *image = priv->ucode_boot.v_addr;
  85         u32 len = priv->ucode_boot.len;
  86         u32 reg;
  87         u32 val;
  88
  89         IWL_DEBUG_INFO("Begin verify bsm\n");
  90
  91         /* verify BSM SRAM contents */
  92         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
  93         for (reg = BSM_SRAM_LOWER_BOUND;
  94              reg < BSM_SRAM_LOWER_BOUND + len;
  95              reg += sizeof(u32), image++) {
  96                 val = iwl_read_prph(priv, reg);
  97                 if (val != le32_to_cpu(*image)) {
  98                         IWL_ERROR("BSM uCode verification failed at "
  99                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
 100                                   BSM_SRAM_LOWER_BOUND,
 101                                   reg - BSM_SRAM_LOWER_BOUND, len,
 102                                   val, le32_to_cpu(*image));
 103                         return -EIO;
 104                 }
 105         }
 106
 107         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
 108
 109         return 0;
 110 }
 111
 112 /**
 113  * iwl4965_load_bsm - Load bootstrap instructions
 114  *
 115  * BSM operation:
 116  *
 117  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 118  * in special SRAM that does not power down during RFKILL.  When powering back
 119  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 120  * the bootstrap program into the on-board processor, and starts it.
 121  *
 122  * The bootstrap program loads (via DMA) instructions and data for a new
 123  * program from host DRAM locations indicated by the host driver in the
 124  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 125  * automatically.
 126  *
 127  * When initializing the NIC, the host driver points the BSM to the
 128  * "initialize" uCode image.  This uCode sets up some internal data, then
 129  * notifies host via "initialize alive" that it is complete.
 130  *
 131  * The host then replaces the BSM_DRAM_* pointer values to point to the
 132  * normal runtime uCode instructions and a backup uCode data cache buffer
 133  * (filled initially with starting data values for the on-board processor),
 134  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 135  * which begins normal operation.
 136  *
 137  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 138  * the backup data cache in DRAM before SRAM is powered down.
 139  *
 140  * When powering back up, the BSM loads the bootstrap program.  This reloads
 141  * the runtime uCode instructions and the backup data cache into SRAM,
 142  * and re-launches the runtime uCode from where it left off.
 143  */
 144 static int iwl4965_load_bsm(struct iwl_priv *priv)
 145 {
 146         __le32 *image = priv->ucode_boot.v_addr;
 147         u32 len = priv->ucode_boot.len;
 148         dma_addr_t pinst;
 149         dma_addr_t pdata;
 150         u32 inst_len;
 151         u32 data_len;
 152         int i;
 153         u32 done;
 154         u32 reg_offset;
 155         int ret;
 156
 157         IWL_DEBUG_INFO("Begin load bsm\n");
 158
 159         priv->ucode_type = UCODE_RT;
 160
 161         /* make sure bootstrap program is no larger than BSM's SRAM size */
 162         if (len > IWL_MAX_BSM_SIZE)
 163                 return -EINVAL;
 164
 165         /* Tell bootstrap uCode where to find the "Initialize" uCode
 166          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 167          * NOTE:  iwl_init_alive_start() will replace these values,
 168          *        after the "initialize" uCode has run, to point to
 169          *        runtime/protocol instructions and backup data cache.
 170          */
 171         pinst = priv->ucode_init.p_addr >> 4;
 172         pdata = priv->ucode_init_data.p_addr >> 4;
 173         inst_len = priv->ucode_init.len;
 174         data_len = priv->ucode_init_data.len;
 175
 176         ret = iwl_grab_nic_access(priv);
 177         if (ret)
 178                 return ret;
 179
 180         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 181         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 182         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 183         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 184
 185         /* Fill BSM memory with bootstrap instructions */
 186         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 187              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 188              reg_offset += sizeof(u32), image++)
 189                 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
 190
 191         ret = iwl4965_verify_bsm(priv);
 192         if (ret) {
 193                 iwl_release_nic_access(priv);
 194                 return ret;
 195         }
 196
 197         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 198         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
 199         iwl_write_prph(priv, BSM_WR_MEM_DST_REG, RTC_INST_LOWER_BOUND);
 200         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 201
 202         /* Load bootstrap code into instruction SRAM now,
 203          *   to prepare to load "initialize" uCode */
 204         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 205
 206         /* Wait for load of bootstrap uCode to finish */
 207         for (i = 0; i < 100; i++) {
 208                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
 209                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 210                         break;
 211                 udelay(10);
 212         }
 213         if (i < 100)
 214                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
 215         else {
 216                 IWL_ERROR("BSM write did not complete!\n");
 217                 return -EIO;
 218         }
 219
 220         /* Enable future boot loads whenever power management unit triggers it
 221          *   (e.g. when powering back up after power-save shutdown) */
 222         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 223
 224         iwl_release_nic_access(priv);
 225
 226         return 0;
 227 }
 228
 229 /**
 230  * iwl4965_set_ucode_ptrs - Set uCode address location
 231  *
 232  * Tell initialization uCode where to find runtime uCode.
 233  *
 234  * BSM registers initially contain pointers to initialization uCode.
 235  * We need to replace them to load runtime uCode inst and data,
 236  * and to save runtime data when powering down.
 237  */
 238 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
 239 {
 240         dma_addr_t pinst;
 241         dma_addr_t pdata;
 242         unsigned long flags;
 243         int ret = 0;
 244
 245         /* bits 35:4 for 4965 */
 246         pinst = priv->ucode_code.p_addr >> 4;
 247         pdata = priv->ucode_data_backup.p_addr >> 4;
 248
 249         spin_lock_irqsave(&priv->lock, flags);
 250         ret = iwl_grab_nic_access(priv);
 251         if (ret) {
 252                 spin_unlock_irqrestore(&priv->lock, flags);
 253                 return ret;
 254         }
 255
 256         /* Tell bootstrap uCode where to find image to load */
 257         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 258         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 259         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
 260                                  priv->ucode_data.len);
 261
 262         /* Inst bytecount must be last to set up, bit 31 signals uCode
 263          *   that all new ptr/size info is in place */
 264         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
 265                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
 266         iwl_release_nic_access(priv);
 267
 268         spin_unlock_irqrestore(&priv->lock, flags);
 269
 270         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
 271
 272         return ret;
 273 }
 274
 275 /**
 276  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
 277  *
 278  * Called after REPLY_ALIVE notification received from "initialize" uCode.
 279  *
 280  * The 4965 "initialize" ALIVE reply contains calibration data for:
 281  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
 282  *   (3945 does not contain this data).
 283  *
 284  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 285 */
 286 static void iwl4965_init_alive_start(struct iwl_priv *priv)
 287 {
 288         /* Check alive response for "valid" sign from uCode */
 289         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
 290                 /* We had an error bringing up the hardware, so take it
 291                  * all the way back down so we can try again */
 292                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
 293                 goto restart;
 294         }
 295
 296         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 297          * This is a paranoid check, because we would not have gotten the
 298          * "initialize" alive if code weren't properly loaded.  */
 299         if (iwl_verify_ucode(priv)) {
 300                 /* Runtime instruction load was bad;
 301                  * take it all the way back down so we can try again */
 302                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
 303                 goto restart;
 304         }
 305
 306         /* Calculate temperature */
 307         priv->temperature = iwl4965_get_temperature(priv);
 308
 309         /* Send pointers to protocol/runtime uCode image ... init code will
 310          * load and launch runtime uCode, which will send us another "Alive"
 311          * notification. */
 312         IWL_DEBUG_INFO("Initialization Alive received.\n");
 313         if (iwl4965_set_ucode_ptrs(priv)) {
 314                 /* Runtime instruction load won't happen;
 315                  * take it all the way back down so we can try again */
 316                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
 317                 goto restart;
 318         }
 319         return;
 320
 321 restart:
 322         queue_work(priv->workqueue, &priv->restart);
 323 }
 324
 325 static int is_fat_channel(__le32 rxon_flags)
 326 {
 327         return (rxon_flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) ||
 328                 (rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK);
 329 }
 330
 331 int iwl4965_hwrate_to_plcp_idx(u32 rate_n_flags)
 332 {
 333         int idx = 0;
 334
 335         /* 4965 HT rate format */
 336         if (rate_n_flags & RATE_MCS_HT_MSK) {
 337                 idx = (rate_n_flags & 0xff);
 338
 339                 if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 340                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 341
 342                 idx += IWL_FIRST_OFDM_RATE;
 343                 /* skip 9M not supported in ht*/
 344                 if (idx >= IWL_RATE_9M_INDEX)
 345                         idx += 1;
 346                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 347                         return idx;
 348
 349         /* 4965 legacy rate format, search for match in table */
 350         } else {
 351                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
 352                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
 353                                 return idx;
 354         }
 355
 356         return -1;
 357 }
 358
 359 /**
 360  * translate ucode response to mac80211 tx status control values
 361  */
 362 void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 363                                   struct ieee80211_tx_info *control)
 364 {
 365         int rate_index;
 366
 367         control->antenna_sel_tx =
 368                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 369         if (rate_n_flags & RATE_MCS_HT_MSK)
 370                 control->flags |= IEEE80211_TX_CTL_OFDM_HT;
 371         if (rate_n_flags & RATE_MCS_GF_MSK)
 372                 control->flags |= IEEE80211_TX_CTL_GREEN_FIELD;
 373         if (rate_n_flags & RATE_MCS_FAT_MSK)
 374                 control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH;
 375         if (rate_n_flags & RATE_MCS_DUP_MSK)
 376                 control->flags |= IEEE80211_TX_CTL_DUP_DATA;
 377         if (rate_n_flags & RATE_MCS_SGI_MSK)
 378                 control->flags |= IEEE80211_TX_CTL_SHORT_GI;
 379         rate_index = iwl4965_hwrate_to_plcp_idx(rate_n_flags);
 380         if (control->band == IEEE80211_BAND_5GHZ)
 381                 rate_index -= IWL_FIRST_OFDM_RATE;
 382         control->tx_rate_idx = rate_index;
 383 }
 384
 385 /*
 386  * EEPROM handlers
 387  */
 388
 389 static int iwl4965_eeprom_check_version(struct iwl_priv *priv)
 390 {
 391         u16 eeprom_ver;
 392         u16 calib_ver;
 393
 394         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
 395
 396         calib_ver = iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
 397
 398         if (eeprom_ver < EEPROM_4965_EEPROM_VERSION ||
 399             calib_ver < EEPROM_4965_TX_POWER_VERSION)
 400                 goto err;
 401
 402         return 0;
 403 err:
 404         IWL_ERROR("Unsuported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
 405                   eeprom_ver, EEPROM_4965_EEPROM_VERSION,
 406                   calib_ver, EEPROM_4965_TX_POWER_VERSION);
 407         return -EINVAL;
 408
 409 }
 410 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 411 {
 412         int ret;
 413         unsigned long flags;
 414
 415         spin_lock_irqsave(&priv->lock, flags);
 416         ret = iwl_grab_nic_access(priv);
 417         if (ret) {
 418                 spin_unlock_irqrestore(&priv->lock, flags);
 419                 return ret;
 420         }
 421
 422         if (src == IWL_PWR_SRC_VAUX) {
 423                 u32 val;
 424                 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
 425                                             &val);
 426
 427                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) {
 428                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 429                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 430                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 431                 }
 432         } else {
 433                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 434                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 435                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 436         }
 437
 438         iwl_release_nic_access(priv);
 439         spin_unlock_irqrestore(&priv->lock, flags);
 440
 441         return ret;
 442 }
 443
 444 /*
 445  * Activate/Deactivat Tx DMA/FIFO channels according tx fifos mask
 446  * must be called under priv->lock and mac access
 447  */
 448 static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask)
 449 {
 450         iwl_write_prph(priv, IWL49_SCD_TXFACT, mask);
 451 }
 452
 453 static int iwl4965_apm_init(struct iwl_priv *priv)
 454 {
 455         int ret = 0;
 456
 457         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 458                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
 459
 460         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
 461         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 462                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
 463
 464         /* set "initialization complete" bit to move adapter
 465          * D0U* --> D0A* state */
 466         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 467
 468         /* wait for clock stabilization */
 469         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
 470                            CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 471                            CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 472         if (ret < 0) {
 473                 IWL_DEBUG_INFO("Failed to init the card\n");
 474                 goto out;
 475         }
 476
 477         ret = iwl_grab_nic_access(priv);
 478         if (ret)
 479                 goto out;
 480
 481         /* enable DMA */
 482         iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
 483                                                 APMG_CLK_VAL_BSM_CLK_RQT);
 484
 485         udelay(20);
 486
 487         /* disable L1-Active */
 488         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 489                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 490
 491         iwl_release_nic_access(priv);
 492 out:
 493         return ret;
 494 }
 495
 496
 497 static void iwl4965_nic_config(struct iwl_priv *priv)
 498 {
 499         unsigned long flags;
 500         u32 val;
 501         u16 radio_cfg;
 502         u8 val_link;
 503
 504         spin_lock_irqsave(&priv->lock, flags);
 505
 506         if ((priv->rev_id & 0x80) == 0x80 && (priv->rev_id & 0x7f) < 8) {
 507                 pci_read_config_dword(priv->pci_dev, PCI_REG_WUM8, &val);
 508                 /* Enable No Snoop field */
 509                 pci_write_config_dword(priv->pci_dev, PCI_REG_WUM8,
 510                                        val & ~(1 << 11));
 511         }
 512
 513         pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link);
 514
 515         /* L1 is enabled by BIOS */
 516         if ((val_link & PCI_LINK_VAL_L1_EN) == PCI_LINK_VAL_L1_EN)
 517                 /* diable L0S disabled L1A enabled */
 518                 iwl_set_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
 519         else
 520                 /* L0S enabled L1A disabled */
 521                 iwl_clear_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
 522
 523         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 524
 525         /* write radio config values to register */
 526         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 527                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 528                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 529                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 530                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 531
 532         /* set CSR_HW_CONFIG_REG for uCode use */
 533         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 534                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 535                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 536
 537         priv->calib_info = (struct iwl_eeprom_calib_info *)
 538                 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 539
 540         spin_unlock_irqrestore(&priv->lock, flags);
 541 }
 542
 543 static int iwl4965_apm_stop_master(struct iwl_priv *priv)
 544 {
 545         int ret = 0;
 546         unsigned long flags;
 547
 548         spin_lock_irqsave(&priv->lock, flags);
 549
 550         /* set stop master bit */
 551         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
 552
 553         ret = iwl_poll_bit(priv, CSR_RESET,
 554                                   CSR_RESET_REG_FLAG_MASTER_DISABLED,
 555                                   CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
 556         if (ret < 0)
 557                 goto out;
 558
 559 out:
 560         spin_unlock_irqrestore(&priv->lock, flags);
 561         IWL_DEBUG_INFO("stop master\n");
 562
 563         return ret;
 564 }
 565
 566 static void iwl4965_apm_stop(struct iwl_priv *priv)
 567 {
 568         unsigned long flags;
 569
 570         iwl4965_apm_stop_master(priv);
 571
 572         spin_lock_irqsave(&priv->lock, flags);
 573
 574         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 575
 576         udelay(10);
 577
 578         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 579         spin_unlock_irqrestore(&priv->lock, flags);
 580 }
 581
 582 static int iwl4965_apm_reset(struct iwl_priv *priv)
 583 {
 584         int ret = 0;
 585         unsigned long flags;
 586
 587         iwl4965_apm_stop_master(priv);
 588
 589         spin_lock_irqsave(&priv->lock, flags);
 590
 591         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 592
 593         udelay(10);
 594
 595         /* FIXME: put here L1A -L0S w/a */
 596
 597         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 598
 599         ret = iwl_poll_bit(priv, CSR_RESET,
 600                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 601                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
 602
 603         if (ret)
 604                 goto out;
 605
 606         udelay(10);
 607
 608         ret = iwl_grab_nic_access(priv);
 609         if (ret)
 610                 goto out;
 611         /* Enable DMA and BSM Clock */
 612         iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT |
 613                                               APMG_CLK_VAL_BSM_CLK_RQT);
 614
 615         udelay(10);
 616
 617         /* disable L1A */
 618         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 619                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 620
 621         iwl_release_nic_access(priv);
 622
 623         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 624         wake_up_interruptible(&priv->wait_command_queue);
 625
 626 out:
 627         spin_unlock_irqrestore(&priv->lock, flags);
 628
 629         return ret;
 630 }
 631
 632 #define REG_RECALIB_PERIOD (60)
 633
 634 /**
 635  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
 636  *
 637  * This callback is provided in order to send a statistics request.
 638  *
 639  * This timer function is continually reset to execute within
 640  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 641  * was received.  We need to ensure we receive the statistics in order
 642  * to update the temperature used for calibrating the TXPOWER.
 643  */
 644 static void iwl4965_bg_statistics_periodic(unsigned long data)
 645 {
 646         struct iwl_priv *priv = (struct iwl_priv *)data;
 647
 648         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 649                 return;
 650
 651         iwl_send_statistics_request(priv, CMD_ASYNC);
 652 }
 653
 654 void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
 655 {
 656         struct iwl4965_ct_kill_config cmd;
 657         unsigned long flags;
 658         int ret = 0;
 659
 660         spin_lock_irqsave(&priv->lock, flags);
 661         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 662                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 663         spin_unlock_irqrestore(&priv->lock, flags);
 664
 665         cmd.critical_temperature_R =
 666                 cpu_to_le32(priv->hw_params.ct_kill_threshold);
 667
 668         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
 669                                sizeof(cmd), &cmd);
 670         if (ret)
 671                 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
 672         else
 673                 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
 674                         "critical temperature is %d\n",
 675                         cmd.critical_temperature_R);
 676 }
 677
 678 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
 679
 680 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 681  * Called after every association, but this runs only once!
 682  *  ... once chain noise is calibrated the first time, it's good forever.  */
 683 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
 684 {
 685         struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
 686
 687         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 688                 struct iwl4965_calibration_cmd cmd;
 689
 690                 memset(&cmd, 0, sizeof(cmd));
 691                 cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
 692                 cmd.diff_gain_a = 0;
 693                 cmd.diff_gain_b = 0;
 694                 cmd.diff_gain_c = 0;
 695                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 696                                  sizeof(cmd), &cmd))
 697                         IWL_ERROR("Could not send REPLY_PHY_CALIBRATION_CMD\n");
 698                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 699                 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
 700         }
 701 }
 702
 703 static void iwl4965_gain_computation(struct iwl_priv *priv,
 704                 u32 *average_noise,
 705                 u16 min_average_noise_antenna_i,
 706                 u32 min_average_noise)
 707 {
 708         int i, ret;
 709         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 710
 711         data->delta_gain_code[min_average_noise_antenna_i] = 0;
 712
 713         for (i = 0; i < NUM_RX_CHAINS; i++) {
 714                 s32 delta_g = 0;
 715
 716                 if (!(data->disconn_array[i]) &&
 717                     (data->delta_gain_code[i] ==
 718                              CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
 719                         delta_g = average_noise[i] - min_average_noise;
 720                         data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
 721                         data->delta_gain_code[i] =
 722                                 min(data->delta_gain_code[i],
 723                                 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 724
 725                         data->delta_gain_code[i] =
 726                                 (data->delta_gain_code[i] | (1 << 2));
 727                 } else {
 728                         data->delta_gain_code[i] = 0;
 729                 }
 730         }
 731         IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
 732                      data->delta_gain_code[0],
 733                      data->delta_gain_code[1],
 734                      data->delta_gain_code[2]);
 735
 736         /* Differential gain gets sent to uCode only once */
 737         if (!data->radio_write) {
 738                 struct iwl4965_calibration_cmd cmd;
 739                 data->radio_write = 1;
 740
 741                 memset(&cmd, 0, sizeof(cmd));
 742                 cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
 743                 cmd.diff_gain_a = data->delta_gain_code[0];
 744                 cmd.diff_gain_b = data->delta_gain_code[1];
 745                 cmd.diff_gain_c = data->delta_gain_code[2];
 746                 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 747                                       sizeof(cmd), &cmd);
 748                 if (ret)
 749                         IWL_DEBUG_CALIB("fail sending cmd "
 750                                      "REPLY_PHY_CALIBRATION_CMD \n");
 751
 752                 /* TODO we might want recalculate
 753                  * rx_chain in rxon cmd */
 754
 755                 /* Mark so we run this algo only once! */
 756                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 757         }
 758         data->chain_noise_a = 0;
 759         data->chain_noise_b = 0;
 760         data->chain_noise_c = 0;
 761         data->chain_signal_a = 0;
 762         data->chain_signal_b = 0;
 763         data->chain_signal_c = 0;
 764         data->beacon_count = 0;
 765 }
 766
 767 static void iwl4965_bg_sensitivity_work(struct work_struct *work)
 768 {
 769         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 770                         sensitivity_work);
 771
 772         mutex_lock(&priv->mutex);
 773
 774         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 775             test_bit(STATUS_SCANNING, &priv->status)) {
 776                 mutex_unlock(&priv->mutex);
 777                 return;
 778         }
 779
 780         if (priv->start_calib) {
 781                 iwl_chain_noise_calibration(priv, &priv->statistics);
 782
 783                 iwl_sensitivity_calibration(priv, &priv->statistics);
 784         }
 785
 786         mutex_unlock(&priv->mutex);
 787         return;
 788 }
 789 #endif /*CONFIG_IWL4965_RUN_TIME_CALIB*/
 790
 791 static void iwl4965_bg_txpower_work(struct work_struct *work)
 792 {
 793         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 794                         txpower_work);
 795
 796         /* If a scan happened to start before we got here
 797          * then just return; the statistics notification will
 798          * kick off another scheduled work to compensate for
 799          * any temperature delta we missed here. */
 800         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 801             test_bit(STATUS_SCANNING, &priv->status))
 802                 return;
 803
 804         mutex_lock(&priv->mutex);
 805
 806         /* Regardless of if we are assocaited, we must reconfigure the
 807          * TX power since frames can be sent on non-radar channels while
 808          * not associated */
 809         iwl4965_hw_reg_send_txpower(priv);
 810
 811         /* Update last_temperature to keep is_calib_needed from running
 812          * when it isn't needed... */
 813         priv->last_temperature = priv->temperature;
 814
 815         mutex_unlock(&priv->mutex);
 816 }
 817
 818 /*
 819  * Acquire priv->lock before calling this function !
 820  */
 821 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
 822 {
 823         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
 824                              (index & 0xff) | (txq_id << 8));
 825         iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
 826 }
 827
 828 /**
 829  * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
 830  * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
 831  * @scd_retry: (1) Indicates queue will be used in aggregation mode
 832  *
 833  * NOTE:  Acquire priv->lock before calling this function !
 834  */
 835 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
 836                                         struct iwl_tx_queue *txq,
 837                                         int tx_fifo_id, int scd_retry)
 838 {
 839         int txq_id = txq->q.id;
 840
 841         /* Find out whether to activate Tx queue */
 842         int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0;
 843
 844         /* Set up and activate */
 845         iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
 846                          (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
 847                          (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
 848                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
 849                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
 850                          IWL49_SCD_QUEUE_STTS_REG_MSK);
 851
 852         txq->sched_retry = scd_retry;
 853
 854         IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
 855                        active ? "Activate" : "Deactivate",
 856                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
 857 }
 858
 859 static const u16 default_queue_to_tx_fifo[] = {
 860         IWL_TX_FIFO_AC3,
 861         IWL_TX_FIFO_AC2,
 862         IWL_TX_FIFO_AC1,
 863         IWL_TX_FIFO_AC0,
 864         IWL49_CMD_FIFO_NUM,
 865         IWL_TX_FIFO_HCCA_1,
 866         IWL_TX_FIFO_HCCA_2
 867 };
 868
 869 int iwl4965_alive_notify(struct iwl_priv *priv)
 870 {
 871         u32 a;
 872         int i = 0;
 873         unsigned long flags;
 874         int ret;
 875
 876         spin_lock_irqsave(&priv->lock, flags);
 877
 878         ret = iwl_grab_nic_access(priv);
 879         if (ret) {
 880                 spin_unlock_irqrestore(&priv->lock, flags);
 881                 return ret;
 882         }
 883
 884         /* Clear 4965's internal Tx Scheduler data base */
 885         priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
 886         a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
 887         for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
 888                 iwl_write_targ_mem(priv, a, 0);
 889         for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
 890                 iwl_write_targ_mem(priv, a, 0);
 891         for (; a < sizeof(u16) * priv->hw_params.max_txq_num; a += 4)
 892                 iwl_write_targ_mem(priv, a, 0);
 893
 894         /* Tel 4965 where to find Tx byte count tables */
 895         iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
 896                 (priv->shared_phys +
 897                  offsetof(struct iwl4965_shared, queues_byte_cnt_tbls)) >> 10);
 898
 899         /* Disable chain mode for all queues */
 900         iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
 901
 902         /* Initialize each Tx queue (including the command queue) */
 903         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
 904
 905                 /* TFD circular buffer read/write indexes */
 906                 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
 907                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
 908
 909                 /* Max Tx Window size for Scheduler-ACK mode */
 910                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 911                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
 912                                 (SCD_WIN_SIZE <<
 913                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
 914                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
 915
 916                 /* Frame limit */
 917                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 918                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
 919                                 sizeof(u32),
 920                                 (SCD_FRAME_LIMIT <<
 921                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 922                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
 923
 924         }
 925         iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
 926                                  (1 << priv->hw_params.max_txq_num) - 1);
 927
 928         /* Activate all Tx DMA/FIFO channels */
 929         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 7));
 930
 931         iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 932
 933         /* Map each Tx/cmd queue to its corresponding fifo */
 934         for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
 935                 int ac = default_queue_to_tx_fifo[i];
 936                 iwl_txq_ctx_activate(priv, i);
 937                 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
 938         }
 939
 940         iwl_release_nic_access(priv);
 941         spin_unlock_irqrestore(&priv->lock, flags);
 942
 943         return ret;
 944 }
 945
 946 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
 947 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
 948         .min_nrg_cck = 97,
 949         .max_nrg_cck = 0,
 950
 951         .auto_corr_min_ofdm = 85,
 952         .auto_corr_min_ofdm_mrc = 170,
 953         .auto_corr_min_ofdm_x1 = 105,
 954         .auto_corr_min_ofdm_mrc_x1 = 220,
 955
 956         .auto_corr_max_ofdm = 120,
 957         .auto_corr_max_ofdm_mrc = 210,
 958         .auto_corr_max_ofdm_x1 = 140,
 959         .auto_corr_max_ofdm_mrc_x1 = 270,
 960
 961         .auto_corr_min_cck = 125,
 962         .auto_corr_max_cck = 200,
 963         .auto_corr_min_cck_mrc = 200,
 964         .auto_corr_max_cck_mrc = 400,
 965
 966         .nrg_th_cck = 100,
 967         .nrg_th_ofdm = 100,
 968 };
 969 #endif
 970
 971 /**
 972  * iwl4965_hw_set_hw_params
 973  *
 974  * Called when initializing driver
 975  */
 976 int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
 977 {
 978
 979         if ((priv->cfg->mod_params->num_of_queues > IWL49_NUM_QUEUES) ||
 980             (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) {
 981                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
 982                           IWL_MIN_NUM_QUEUES, IWL49_NUM_QUEUES);
 983                 return -EINVAL;
 984         }
 985
 986         priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
 987         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
 988         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
 989         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
 990         if (priv->cfg->mod_params->amsdu_size_8K)
 991                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
 992         else
 993                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
 994         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
 995         priv->hw_params.max_stations = IWL4965_STATION_COUNT;
 996         priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
 997
 998         priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
 999         priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
1000         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
1001         priv->hw_params.fat_channel = BIT(IEEE80211_BAND_5GHZ);
1002
1003         priv->hw_params.tx_chains_num = 2;
1004         priv->hw_params.rx_chains_num = 2;
1005         priv->hw_params.valid_tx_ant = ANT_A | ANT_B;
1006         priv->hw_params.valid_rx_ant = ANT_A | ANT_B;
1007         priv->hw_params.ct_kill_threshold = CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD);
1008
1009 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
1010         priv->hw_params.sens = &iwl4965_sensitivity;
1011 #endif
1012
1013         return 0;
1014 }
1015
1016 /* set card power command */
1017 static int iwl4965_set_power(struct iwl_priv *priv,
1018                       void *cmd)
1019 {
1020         int ret = 0;
1021
1022         ret = iwl_send_cmd_pdu_async(priv, POWER_TABLE_CMD,
1023                                     sizeof(struct iwl4965_powertable_cmd),
1024                                     cmd, NULL);
1025         return ret;
1026 }
1027 int iwl4965_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1028 {
1029         IWL_ERROR("TODO: Implement iwl4965_hw_reg_set_txpower!\n");
1030         return -EINVAL;
1031 }
1032
1033 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
1034 {
1035         s32 sign = 1;
1036
1037         if (num < 0) {
1038                 sign = -sign;
1039                 num = -num;
1040         }
1041         if (denom < 0) {
1042                 sign = -sign;
1043                 denom = -denom;
1044         }
1045         *res = 1;
1046         *res = ((num * 2 + denom) / (denom * 2)) * sign;
1047
1048         return 1;
1049 }
1050
1051 /**
1052  * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
1053  *
1054  * Determines power supply voltage compensation for txpower calculations.
1055  * Returns number of 1/2-dB steps to subtract from gain table index,
1056  * to compensate for difference between power supply voltage during
1057  * factory measurements, vs. current power supply voltage.
1058  *
1059  * Voltage indication is higher for lower voltage.
1060  * Lower voltage requires more gain (lower gain table index).
1061  */
1062 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
1063                                             s32 current_voltage)
1064 {
1065         s32 comp = 0;
1066
1067         if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
1068             (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
1069                 return 0;
1070
1071         iwl4965_math_div_round(current_voltage - eeprom_voltage,
1072                                TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
1073
1074         if (current_voltage > eeprom_voltage)
1075                 comp *= 2;
1076         if ((comp < -2) || (comp > 2))
1077                 comp = 0;
1078
1079         return comp;
1080 }
1081
1082 static const struct iwl_channel_info *
1083 iwl4965_get_channel_txpower_info(struct iwl_priv *priv,
1084                                  enum ieee80211_band band, u16 channel)
1085 {
1086         const struct iwl_channel_info *ch_info;
1087
1088         ch_info = iwl_get_channel_info(priv, band, channel);
1089
1090         if (!is_channel_valid(ch_info))
1091                 return NULL;
1092
1093         return ch_info;
1094 }
1095
1096 static s32 iwl4965_get_tx_atten_grp(u16 channel)
1097 {
1098         if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
1099             channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
1100                 return CALIB_CH_GROUP_5;
1101
1102         if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
1103             channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
1104                 return CALIB_CH_GROUP_1;
1105
1106         if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
1107             channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
1108                 return CALIB_CH_GROUP_2;
1109
1110         if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
1111             channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
1112                 return CALIB_CH_GROUP_3;
1113
1114         if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
1115             channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
1116                 return CALIB_CH_GROUP_4;
1117
1118         IWL_ERROR("Can't find txatten group for channel %d.\n", channel);
1119         return -1;
1120 }
1121
1122 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
1123 {
1124         s32 b = -1;
1125
1126         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
1127                 if (priv->calib_info->band_info[b].ch_from == 0)
1128                         continue;
1129
1130                 if ((channel >= priv->calib_info->band_info[b].ch_from)
1131                     && (channel <= priv->calib_info->band_info[b].ch_to))
1132                         break;
1133         }
1134
1135         return b;
1136 }
1137
1138 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
1139 {
1140         s32 val;
1141
1142         if (x2 == x1)
1143                 return y1;
1144         else {
1145                 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
1146                 return val + y2;
1147         }
1148 }
1149
1150 /**
1151  * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
1152  *
1153  * Interpolates factory measurements from the two sample channels within a
1154  * sub-band, to apply to channel of interest.  Interpolation is proportional to
1155  * differences in channel frequencies, which is proportional to differences
1156  * in channel number.
1157  */
1158 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
1159                                     struct iwl_eeprom_calib_ch_info *chan_info)
1160 {
1161         s32 s = -1;
1162         u32 c;
1163         u32 m;
1164         const struct iwl_eeprom_calib_measure *m1;
1165         const struct iwl_eeprom_calib_measure *m2;
1166         struct iwl_eeprom_calib_measure *omeas;
1167         u32 ch_i1;
1168         u32 ch_i2;
1169
1170         s = iwl4965_get_sub_band(priv, channel);
1171         if (s >= EEPROM_TX_POWER_BANDS) {
1172                 IWL_ERROR("Tx Power can not find channel %d ", channel);
1173                 return -1;
1174         }
1175
1176         ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
1177         ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
1178         chan_info->ch_num = (u8) channel;
1179
1180         IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n",
1181                           channel, s, ch_i1, ch_i2);
1182
1183         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
1184                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
1185                         m1 = &(priv->calib_info->band_info[s].ch1.
1186                                measurements[c][m]);
1187                         m2 = &(priv->calib_info->band_info[s].ch2.
1188                                measurements[c][m]);
1189                         omeas = &(chan_info->measurements[c][m]);
1190
1191                         omeas->actual_pow =
1192                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1193                                                            m1->actual_pow,
1194                                                            ch_i2,
1195                                                            m2->actual_pow);
1196                         omeas->gain_idx =
1197                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1198                                                            m1->gain_idx, ch_i2,
1199                                                            m2->gain_idx);
1200                         omeas->temperature =
1201                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1202                                                            m1->temperature,
1203                                                            ch_i2,
1204                                                            m2->temperature);
1205                         omeas->pa_det =
1206                             (s8) iwl4965_interpolate_value(channel, ch_i1,
1207                                                            m1->pa_det, ch_i2,
1208                                                            m2->pa_det);
1209
1210                         IWL_DEBUG_TXPOWER
1211                             ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
1212                              m1->actual_pow, m2->actual_pow, omeas->actual_pow);
1213                         IWL_DEBUG_TXPOWER
1214                             ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
1215                              m1->gain_idx, m2->gain_idx, omeas->gain_idx);
1216                         IWL_DEBUG_TXPOWER
1217                             ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
1218                              m1->pa_det, m2->pa_det, omeas->pa_det);
1219                         IWL_DEBUG_TXPOWER
1220                             ("chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
1221                              m1->temperature, m2->temperature,
1222                              omeas->temperature);
1223                 }
1224         }
1225
1226         return 0;
1227 }
1228
1229 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
1230  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
1231 static s32 back_off_table[] = {
1232         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
1233         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
1234         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
1235         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
1236         10                      /* CCK */
1237 };
1238
1239 /* Thermal compensation values for txpower for various frequency ranges ...
1240  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
1241 static struct iwl4965_txpower_comp_entry {
1242         s32 degrees_per_05db_a;
1243         s32 degrees_per_05db_a_denom;
1244 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
1245         {9, 2},                 /* group 0 5.2, ch  34-43 */
1246         {4, 1},                 /* group 1 5.2, ch  44-70 */
1247         {4, 1},                 /* group 2 5.2, ch  71-124 */
1248         {4, 1},                 /* group 3 5.2, ch 125-200 */
1249         {3, 1}                  /* group 4 2.4, ch   all */
1250 };
1251
1252 static s32 get_min_power_index(s32 rate_power_index, u32 band)
1253 {
1254         if (!band) {
1255                 if ((rate_power_index & 7) <= 4)
1256                         return MIN_TX_GAIN_INDEX_52GHZ_EXT;
1257         }
1258         return MIN_TX_GAIN_INDEX;
1259 }
1260
1261 struct gain_entry {
1262         u8 dsp;
1263         u8 radio;
1264 };
1265
1266 static const struct gain_entry gain_table[2][108] = {
1267         /* 5.2GHz power gain index table */
1268         {
1269          {123, 0x3F},           /* highest txpower */
1270          {117, 0x3F},
1271          {110, 0x3F},
1272          {104, 0x3F},
1273          {98, 0x3F},
1274          {110, 0x3E},
1275          {104, 0x3E},
1276          {98, 0x3E},
1277          {110, 0x3D},
1278          {104, 0x3D},
1279          {98, 0x3D},
1280          {110, 0x3C},
1281          {104, 0x3C},
1282          {98, 0x3C},
1283          {110, 0x3B},
1284          {104, 0x3B},
1285          {98, 0x3B},
1286          {110, 0x3A},
1287          {104, 0x3A},
1288          {98, 0x3A},
1289          {110, 0x39},
1290          {104, 0x39},
1291          {98, 0x39},
1292          {110, 0x38},
1293          {104, 0x38},
1294          {98, 0x38},
1295          {110, 0x37},
1296          {104, 0x37},
1297          {98, 0x37},
1298          {110, 0x36},
1299          {104, 0x36},
1300          {98, 0x36},
1301          {110, 0x35},
1302          {104, 0x35},
1303          {98, 0x35},
1304          {110, 0x34},
1305          {104, 0x34},
1306          {98, 0x34},
1307          {110, 0x33},
1308          {104, 0x33},
1309          {98, 0x33},
1310          {110, 0x32},
1311          {104, 0x32},
1312          {98, 0x32},
1313          {110, 0x31},
1314          {104, 0x31},
1315          {98, 0x31},
1316          {110, 0x30},
1317          {104, 0x30},
1318          {98, 0x30},
1319          {110, 0x25},
1320          {104, 0x25},
1321          {98, 0x25},
1322          {110, 0x24},
1323          {104, 0x24},
1324          {98, 0x24},
1325          {110, 0x23},
1326          {104, 0x23},
1327          {98, 0x23},
1328          {110, 0x22},
1329          {104, 0x18},
1330          {98, 0x18},
1331          {110, 0x17},
1332          {104, 0x17},
1333          {98, 0x17},
1334          {110, 0x16},
1335          {104, 0x16},
1336          {98, 0x16},
1337          {110, 0x15},
1338          {104, 0x15},
1339          {98, 0x15},
1340          {110, 0x14},
1341          {104, 0x14},
1342          {98, 0x14},
1343          {110, 0x13},
1344          {104, 0x13},
1345          {98, 0x13},
1346          {110, 0x12},
1347          {104, 0x08},
1348          {98, 0x08},
1349          {110, 0x07},
1350          {104, 0x07},
1351          {98, 0x07},
1352          {110, 0x06},
1353          {104, 0x06},
1354          {98, 0x06},
1355          {110, 0x05},
1356          {104, 0x05},
1357          {98, 0x05},
1358          {110, 0x04},
1359          {104, 0x04},
1360          {98, 0x04},
1361          {110, 0x03},
1362          {104, 0x03},
1363          {98, 0x03},
1364          {110, 0x02},
1365          {104, 0x02},
1366          {98, 0x02},
1367          {110, 0x01},
1368          {104, 0x01},
1369          {98, 0x01},
1370          {110, 0x00},
1371          {104, 0x00},
1372          {98, 0x00},
1373          {93, 0x00},
1374          {88, 0x00},
1375          {83, 0x00},
1376          {78, 0x00},
1377          },
1378         /* 2.4GHz power gain index table */
1379         {
1380          {110, 0x3f},           /* highest txpower */
1381          {104, 0x3f},
1382          {98, 0x3f},
1383          {110, 0x3e},
1384          {104, 0x3e},
1385          {98, 0x3e},
1386          {110, 0x3d},
1387          {104, 0x3d},
1388          {98, 0x3d},
1389          {110, 0x3c},
1390          {104, 0x3c},
1391          {98, 0x3c},
1392          {110, 0x3b},
1393          {104, 0x3b},
1394          {98, 0x3b},
1395          {110, 0x3a},
1396          {104, 0x3a},
1397          {98, 0x3a},
1398          {110, 0x39},
1399          {104, 0x39},
1400          {98, 0x39},
1401          {110, 0x38},
1402          {104, 0x38},
1403          {98, 0x38},
1404          {110, 0x37},
1405          {104, 0x37},
1406          {98, 0x37},
1407          {110, 0x36},
1408          {104, 0x36},
1409          {98, 0x36},
1410          {110, 0x35},
1411          {104, 0x35},
1412          {98, 0x35},
1413          {110, 0x34},
1414          {104, 0x34},
1415          {98, 0x34},
1416          {110, 0x33},
1417          {104, 0x33},
1418          {98, 0x33},
1419          {110, 0x32},
1420          {104, 0x32},
1421          {98, 0x32},
1422          {110, 0x31},
1423          {104, 0x31},
1424          {98, 0x31},
1425          {110, 0x30},
1426          {104, 0x30},
1427          {98, 0x30},
1428          {110, 0x6},
1429          {104, 0x6},
1430          {98, 0x6},
1431          {110, 0x5},
1432          {104, 0x5},
1433          {98, 0x5},
1434          {110, 0x4},
1435          {104, 0x4},
1436          {98, 0x4},
1437          {110, 0x3},
1438          {104, 0x3},
1439          {98, 0x3},
1440          {110, 0x2},
1441          {104, 0x2},
1442          {98, 0x2},
1443          {110, 0x1},
1444          {104, 0x1},
1445          {98, 0x1},
1446          {110, 0x0},
1447          {104, 0x0},
1448          {98, 0x0},
1449          {97, 0},
1450          {96, 0},
1451          {95, 0},
1452          {94, 0},
1453          {93, 0},
1454          {92, 0},
1455          {91, 0},
1456          {90, 0},
1457          {89, 0},
1458          {88, 0},
1459          {87, 0},
1460          {86, 0},
1461          {85, 0},
1462          {84, 0},
1463          {83, 0},
1464          {82, 0},
1465          {81, 0},
1466          {80, 0},
1467          {79, 0},
1468          {78, 0},
1469          {77, 0},
1470          {76, 0},
1471          {75, 0},
1472          {74, 0},
1473          {73, 0},
1474          {72, 0},
1475          {71, 0},
1476          {70, 0},
1477          {69, 0},
1478          {68, 0},
1479          {67, 0},
1480          {66, 0},
1481          {65, 0},
1482          {64, 0},
1483          {63, 0},
1484          {62, 0},
1485          {61, 0},
1486          {60, 0},
1487          {59, 0},
1488          }
1489 };
1490
1491 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1492                                     u8 is_fat, u8 ctrl_chan_high,
1493                                     struct iwl4965_tx_power_db *tx_power_tbl)
1494 {
1495         u8 saturation_power;
1496         s32 target_power;
1497         s32 user_target_power;
1498         s32 power_limit;
1499         s32 current_temp;
1500         s32 reg_limit;
1501         s32 current_regulatory;
1502         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1503         int i;
1504         int c;
1505         const struct iwl_channel_info *ch_info = NULL;
1506         struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1507         const struct iwl_eeprom_calib_measure *measurement;
1508         s16 voltage;
1509         s32 init_voltage;
1510         s32 voltage_compensation;
1511         s32 degrees_per_05db_num;
1512         s32 degrees_per_05db_denom;
1513         s32 factory_temp;
1514         s32 temperature_comp[2];
1515         s32 factory_gain_index[2];
1516         s32 factory_actual_pwr[2];
1517         s32 power_index;
1518
1519         /* Sanity check requested level (dBm) */
1520         if (priv->user_txpower_limit < IWL_TX_POWER_TARGET_POWER_MIN) {
1521                 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
1522                             priv->user_txpower_limit);
1523                 return -EINVAL;
1524         }
1525         if (priv->user_txpower_limit > IWL_TX_POWER_TARGET_POWER_MAX) {
1526                 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
1527                             priv->user_txpower_limit);
1528                 return -EINVAL;
1529         }
1530
1531         /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
1532          *   are used for indexing into txpower table) */
1533         user_target_power = 2 * priv->user_txpower_limit;
1534
1535         /* Get current (RXON) channel, band, width */
1536         ch_info =
1537                 iwl4965_get_channel_txpower_info(priv, priv->band, channel);
1538
1539         IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band,
1540                           is_fat);
1541
1542         if (!ch_info)
1543                 return -EINVAL;
1544
1545         /* get txatten group, used to select 1) thermal txpower adjustment
1546          *   and 2) mimo txpower balance between Tx chains. */
1547         txatten_grp = iwl4965_get_tx_atten_grp(channel);
1548         if (txatten_grp < 0)
1549                 return -EINVAL;
1550
1551         IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
1552                           channel, txatten_grp);
1553
1554         if (is_fat) {
1555                 if (ctrl_chan_high)
1556                         channel -= 2;
1557                 else
1558                         channel += 2;
1559         }
1560
1561         /* hardware txpower limits ...
1562          * saturation (clipping distortion) txpowers are in half-dBm */
1563         if (band)
1564                 saturation_power = priv->calib_info->saturation_power24;
1565         else
1566                 saturation_power = priv->calib_info->saturation_power52;
1567
1568         if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1569             saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1570                 if (band)
1571                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1572                 else
1573                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1574         }
1575
1576         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1577          *   max_power_avg values are in dBm, convert * 2 */
1578         if (is_fat)
1579                 reg_limit = ch_info->fat_max_power_avg * 2;
1580         else
1581                 reg_limit = ch_info->max_power_avg * 2;
1582
1583         if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1584             (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1585                 if (band)
1586                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1587                 else
1588                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1589         }
1590
1591         /* Interpolate txpower calibration values for this channel,
1592          *   based on factory calibration tests on spaced channels. */
1593         iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1594
1595         /* calculate tx gain adjustment based on power supply voltage */
1596         voltage = priv->calib_info->voltage;
1597         init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1598         voltage_compensation =
1599             iwl4965_get_voltage_compensation(voltage, init_voltage);
1600
1601         IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n",
1602                           init_voltage,
1603                           voltage, voltage_compensation);
1604
1605         /* get current temperature (Celsius) */
1606         current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1607         current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1608         current_temp = KELVIN_TO_CELSIUS(current_temp);
1609
1610         /* select thermal txpower adjustment params, based on channel group
1611          *   (same frequency group used for mimo txatten adjustment) */
1612         degrees_per_05db_num =
1613             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1614         degrees_per_05db_denom =
1615             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1616
1617         /* get per-chain txpower values from factory measurements */
1618         for (c = 0; c < 2; c++) {
1619                 measurement = &ch_eeprom_info.measurements[c][1];
1620
1621                 /* txgain adjustment (in half-dB steps) based on difference
1622                  *   between factory and current temperature */
1623                 factory_temp = measurement->temperature;
1624                 iwl4965_math_div_round((current_temp - factory_temp) *
1625                                        degrees_per_05db_denom,
1626                                        degrees_per_05db_num,
1627                                        &temperature_comp[c]);
1628
1629                 factory_gain_index[c] = measurement->gain_idx;
1630                 factory_actual_pwr[c] = measurement->actual_pow;
1631
1632                 IWL_DEBUG_TXPOWER("chain = %d\n", c);
1633                 IWL_DEBUG_TXPOWER("fctry tmp %d, "
1634                                   "curr tmp %d, comp %d steps\n",
1635                                   factory_temp, current_temp,
1636                                   temperature_comp[c]);
1637
1638                 IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n",
1639                                   factory_gain_index[c],
1640                                   factory_actual_pwr[c]);
1641         }
1642
1643         /* for each of 33 bit-rates (including 1 for CCK) */
1644         for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1645                 u8 is_mimo_rate;
1646                 union iwl4965_tx_power_dual_stream tx_power;
1647
1648                 /* for mimo, reduce each chain's txpower by half
1649                  * (3dB, 6 steps), so total output power is regulatory
1650                  * compliant. */
1651                 if (i & 0x8) {
1652                         current_regulatory = reg_limit -
1653                             IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1654                         is_mimo_rate = 1;
1655                 } else {
1656                         current_regulatory = reg_limit;
1657                         is_mimo_rate = 0;
1658                 }
1659
1660                 /* find txpower limit, either hardware or regulatory */
1661                 power_limit = saturation_power - back_off_table[i];
1662                 if (power_limit > current_regulatory)
1663                         power_limit = current_regulatory;
1664
1665                 /* reduce user's txpower request if necessary
1666                  * for this rate on this channel */
1667                 target_power = user_target_power;
1668                 if (target_power > power_limit)
1669                         target_power = power_limit;
1670
1671                 IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n",
1672                                   i, saturation_power - back_off_table[i],
1673                                   current_regulatory, user_target_power,
1674                                   target_power);
1675
1676                 /* for each of 2 Tx chains (radio transmitters) */
1677                 for (c = 0; c < 2; c++) {
1678                         s32 atten_value;
1679
1680                         if (is_mimo_rate)
1681                                 atten_value =
1682                                     (s32)le32_to_cpu(priv->card_alive_init.
1683                                     tx_atten[txatten_grp][c]);
1684                         else
1685                                 atten_value = 0;
1686
1687                         /* calculate index; higher index means lower txpower */
1688                         power_index = (u8) (factory_gain_index[c] -
1689                                             (target_power -
1690                                              factory_actual_pwr[c]) -
1691                                             temperature_comp[c] -
1692                                             voltage_compensation +
1693                                             atten_value);
1694
1695 /*                      IWL_DEBUG_TXPOWER("calculated txpower index %d\n",
1696                                                 power_index); */
1697
1698                         if (power_index < get_min_power_index(i, band))
1699                                 power_index = get_min_power_index(i, band);
1700
1701                         /* adjust 5 GHz index to support negative indexes */
1702                         if (!band)
1703                                 power_index += 9;
1704
1705                         /* CCK, rate 32, reduce txpower for CCK */
1706                         if (i == POWER_TABLE_CCK_ENTRY)
1707                                 power_index +=
1708                                     IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1709
1710                         /* stay within the table! */
1711                         if (power_index > 107) {
1712                                 IWL_WARNING("txpower index %d > 107\n",
1713                                             power_index);
1714                                 power_index = 107;
1715                         }
1716                         if (power_index < 0) {
1717                                 IWL_WARNING("txpower index %d < 0\n",
1718                                             power_index);
1719                                 power_index = 0;
1720                         }
1721
1722                         /* fill txpower command for this rate/chain */
1723                         tx_power.s.radio_tx_gain[c] =
1724                                 gain_table[band][power_index].radio;
1725                         tx_power.s.dsp_predis_atten[c] =
1726                                 gain_table[band][power_index].dsp;
1727
1728                         IWL_DEBUG_TXPOWER("chain %d mimo %d index %d "
1729                                           "gain 0x%02x dsp %d\n",
1730                                           c, atten_value, power_index,
1731                                         tx_power.s.radio_tx_gain[c],
1732                                         tx_power.s.dsp_predis_atten[c]);
1733                 }/* for each chain */
1734
1735                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1736
1737         }/* for each rate */
1738
1739         return 0;
1740 }
1741
1742 /**
1743  * iwl4965_hw_reg_send_txpower - Configure the TXPOWER level user limit
1744  *
1745  * Uses the active RXON for channel, band, and characteristics (fat, high)
1746  * The power limit is taken from priv->user_txpower_limit.
1747  */
1748 int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv)
1749 {
1750         struct iwl4965_txpowertable_cmd cmd = { 0 };
1751         int ret;
1752         u8 band = 0;
1753         u8 is_fat = 0;
1754         u8 ctrl_chan_high = 0;
1755
1756         if (test_bit(STATUS_SCANNING, &priv->status)) {
1757                 /* If this gets hit a lot, switch it to a BUG() and catch
1758                  * the stack trace to find out who is calling this during
1759                  * a scan. */
1760                 IWL_WARNING("TX Power requested while scanning!\n");
1761                 return -EAGAIN;
1762         }
1763
1764         band = priv->band == IEEE80211_BAND_2GHZ;
1765
1766         is_fat =  is_fat_channel(priv->active_rxon.flags);
1767
1768         if (is_fat &&
1769             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1770                 ctrl_chan_high = 1;
1771
1772         cmd.band = band;
1773         cmd.channel = priv->active_rxon.channel;
1774
1775         ret = iwl4965_fill_txpower_tbl(priv, band,
1776                                 le16_to_cpu(priv->active_rxon.channel),
1777                                 is_fat, ctrl_chan_high, &cmd.tx_power);
1778         if (ret)
1779                 goto out;
1780
1781         ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1782
1783 out:
1784         return ret;
1785 }
1786
1787 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1788 {
1789         int ret = 0;
1790         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1791         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1792         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1793
1794         if ((rxon1->flags == rxon2->flags) &&
1795             (rxon1->filter_flags == rxon2->filter_flags) &&
1796             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1797             (rxon1->ofdm_ht_single_stream_basic_rates ==
1798              rxon2->ofdm_ht_single_stream_basic_rates) &&
1799             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1800              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1801             (rxon1->rx_chain == rxon2->rx_chain) &&
1802             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1803                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1804                 return 0;
1805         }
1806
1807         rxon_assoc.flags = priv->staging_rxon.flags;
1808         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1809         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1810         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1811         rxon_assoc.reserved = 0;
1812         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1813             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1814         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1815             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1816         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1817
1818         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1819                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1820         if (ret)
1821                 return ret;
1822
1823         return ret;
1824 }
1825
1826
1827 int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1828 {
1829         int rc;
1830         u8 band = 0;
1831         u8 is_fat = 0;
1832         u8 ctrl_chan_high = 0;
1833         struct iwl4965_channel_switch_cmd cmd = { 0 };
1834         const struct iwl_channel_info *ch_info;
1835
1836         band = priv->band == IEEE80211_BAND_2GHZ;
1837
1838         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1839
1840         is_fat = is_fat_channel(priv->staging_rxon.flags);
1841
1842         if (is_fat &&
1843             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1844                 ctrl_chan_high = 1;
1845
1846         cmd.band = band;
1847         cmd.expect_beacon = 0;
1848         cmd.channel = cpu_to_le16(channel);
1849         cmd.rxon_flags = priv->active_rxon.flags;
1850         cmd.rxon_filter_flags = priv->active_rxon.filter_flags;
1851         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1852         if (ch_info)
1853                 cmd.expect_beacon = is_channel_radar(ch_info);
1854         else
1855                 cmd.expect_beacon = 1;
1856
1857         rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_fat,
1858                                       ctrl_chan_high, &cmd.tx_power);
1859         if (rc) {
1860                 IWL_DEBUG_11H("error:%d  fill txpower_tbl\n", rc);
1861                 return rc;
1862         }
1863
1864         rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1865         return rc;
1866 }
1867
1868 static int iwl4965_shared_mem_rx_idx(struct iwl_priv *priv)
1869 {
1870         struct iwl4965_shared *s = priv->shared_virt;
1871         return le32_to_cpu(s->rb_closed) & 0xFFF;
1872 }
1873
1874 int iwl4965_hw_get_temperature(struct iwl_priv *priv)
1875 {
1876         return priv->temperature;
1877 }
1878
1879 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
1880                           struct iwl_frame *frame, u8 rate)
1881 {
1882         struct iwl4965_tx_beacon_cmd *tx_beacon_cmd;
1883         unsigned int frame_size;
1884
1885         tx_beacon_cmd = &frame->u.beacon;
1886         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
1887
1888         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
1889         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1890
1891         frame_size = iwl4965_fill_beacon_frame(priv,
1892                                 tx_beacon_cmd->frame,
1893                                 iwl_bcast_addr,
1894                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
1895
1896         BUG_ON(frame_size > MAX_MPDU_SIZE);
1897         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
1898
1899         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
1900                 tx_beacon_cmd->tx.rate_n_flags =
1901                         iwl4965_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
1902         else
1903                 tx_beacon_cmd->tx.rate_n_flags =
1904                         iwl4965_hw_set_rate_n_flags(rate, 0);
1905
1906         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
1907                                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK);
1908         return (sizeof(*tx_beacon_cmd) + frame_size);
1909 }
1910
1911 static int iwl4965_alloc_shared_mem(struct iwl_priv *priv)
1912 {
1913         priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
1914                                         sizeof(struct iwl4965_shared),
1915                                         &priv->shared_phys);
1916         if (!priv->shared_virt)
1917                 return -ENOMEM;
1918
1919         memset(priv->shared_virt, 0, sizeof(struct iwl4965_shared));
1920
1921         priv->rb_closed_offset = offsetof(struct iwl4965_shared, rb_closed);
1922
1923         return 0;
1924 }
1925
1926 static void iwl4965_free_shared_mem(struct iwl_priv *priv)
1927 {
1928         if (priv->shared_virt)
1929                 pci_free_consistent(priv->pci_dev,
1930                                     sizeof(struct iwl4965_shared),
1931                                     priv->shared_virt,
1932                                     priv->shared_phys);
1933 }
1934
1935 /**
1936  * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
1937  */
1938 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
1939                                             struct iwl_tx_queue *txq,
1940                                             u16 byte_cnt)
1941 {
1942         int len;
1943         int txq_id = txq->q.id;
1944         struct iwl4965_shared *shared_data = priv->shared_virt;
1945
1946         len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
1947
1948         /* Set up byte count within first 256 entries */
1949         IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
1950                        tfd_offset[txq->q.write_ptr], byte_cnt, len);
1951
1952         /* If within first 64 entries, duplicate at end */
1953         if (txq->q.write_ptr < IWL49_MAX_WIN_SIZE)
1954                 IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
1955                         tfd_offset[IWL49_QUEUE_SIZE + txq->q.write_ptr],
1956                         byte_cnt, len);
1957 }
1958
1959 /**
1960  * sign_extend - Sign extend a value using specified bit as sign-bit
1961  *
1962  * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
1963  * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
1964  *
1965  * @param oper value to sign extend
1966  * @param index 0 based bit index (0<=index<32) to sign bit
1967  */
1968 static s32 sign_extend(u32 oper, int index)
1969 {
1970         u8 shift = 31 - index;
1971
1972         return (s32)(oper << shift) >> shift;
1973 }
1974
1975 /**
1976  * iwl4965_get_temperature - return the calibrated temperature (in Kelvin)
1977  * @statistics: Provides the temperature reading from the uCode
1978  *
1979  * A return of <0 indicates bogus data in the statistics
1980  */
1981 int iwl4965_get_temperature(const struct iwl_priv *priv)
1982 {
1983         s32 temperature;
1984         s32 vt;
1985         s32 R1, R2, R3;
1986         u32 R4;
1987
1988         if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
1989                 (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)) {
1990                 IWL_DEBUG_TEMP("Running FAT temperature calibration\n");
1991                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
1992                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
1993                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
1994                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
1995         } else {
1996                 IWL_DEBUG_TEMP("Running temperature calibration\n");
1997                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
1998                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
1999                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
2000                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
2001         }
2002
2003         /*
2004          * Temperature is only 23 bits, so sign extend out to 32.
2005          *
2006          * NOTE If we haven't received a statistics notification yet
2007          * with an updated temperature, use R4 provided to us in the
2008          * "initialize" ALIVE response.
2009          */
2010         if (!test_bit(STATUS_TEMPERATURE, &priv->status))
2011                 vt = sign_extend(R4, 23);
2012         else
2013                 vt = sign_extend(
2014                         le32_to_cpu(priv->statistics.general.temperature), 23);
2015
2016         IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
2017                        R1, R2, R3, vt);
2018
2019         if (R3 == R1) {
2020                 IWL_ERROR("Calibration conflict R1 == R3\n");
2021                 return -1;
2022         }
2023
2024         /* Calculate temperature in degrees Kelvin, adjust by 97%.
2025          * Add offset to center the adjustment around 0 degrees Centigrade. */
2026         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
2027         temperature /= (R3 - R1);
2028         temperature = (temperature * 97) / 100 +
2029             TEMPERATURE_CALIB_KELVIN_OFFSET;
2030
2031         IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
2032             KELVIN_TO_CELSIUS(temperature));
2033
2034         return temperature;
2035 }
2036
2037 /* Adjust Txpower only if temperature variance is greater than threshold. */
2038 #define IWL_TEMPERATURE_THRESHOLD   3
2039
2040 /**
2041  * iwl4965_is_temp_calib_needed - determines if new calibration is needed
2042  *
2043  * If the temperature changed has changed sufficiently, then a recalibration
2044  * is needed.
2045  *
2046  * Assumes caller will replace priv->last_temperature once calibration
2047  * executed.
2048  */
2049 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
2050 {
2051         int temp_diff;
2052
2053         if (!test_bit(STATUS_STATISTICS, &priv->status)) {
2054                 IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n");
2055                 return 0;
2056         }
2057
2058         temp_diff = priv->temperature - priv->last_temperature;
2059
2060         /* get absolute value */
2061         if (temp_diff < 0) {
2062                 IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff);
2063                 temp_diff = -temp_diff;
2064         } else if (temp_diff == 0)
2065                 IWL_DEBUG_POWER("Same temp, \n");
2066         else
2067                 IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff);
2068
2069         if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
2070                 IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
2071                 return 0;
2072         }
2073
2074         IWL_DEBUG_POWER("Thermal txpower calib needed\n");
2075
2076         return 1;
2077 }
2078
2079 /* Calculate noise level, based on measurements during network silence just
2080  *   before arriving beacon.  This measurement can be done only if we know
2081  *   exactly when to expect beacons, therefore only when we're associated. */
2082 static void iwl4965_rx_calc_noise(struct iwl_priv *priv)
2083 {
2084         struct statistics_rx_non_phy *rx_info
2085                                 = &(priv->statistics.rx.general);
2086         int num_active_rx = 0;
2087         int total_silence = 0;
2088         int bcn_silence_a =
2089                 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
2090         int bcn_silence_b =
2091                 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
2092         int bcn_silence_c =
2093                 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
2094
2095         if (bcn_silence_a) {
2096                 total_silence += bcn_silence_a;
2097                 num_active_rx++;
2098         }
2099         if (bcn_silence_b) {
2100                 total_silence += bcn_silence_b;
2101                 num_active_rx++;
2102         }
2103         if (bcn_silence_c) {
2104                 total_silence += bcn_silence_c;
2105                 num_active_rx++;
2106         }
2107
2108         /* Average among active antennas */
2109         if (num_active_rx)
2110                 priv->last_rx_noise = (total_silence / num_active_rx) - 107;
2111         else
2112                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2113
2114         IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
2115                         bcn_silence_a, bcn_silence_b, bcn_silence_c,
2116                         priv->last_rx_noise);
2117 }
2118
2119 void iwl4965_hw_rx_statistics(struct iwl_priv *priv,
2120                               struct iwl_rx_mem_buffer *rxb)
2121 {
2122         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2123         int change;
2124         s32 temp;
2125
2126         IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
2127                      (int)sizeof(priv->statistics), pkt->len);
2128
2129         change = ((priv->statistics.general.temperature !=
2130                    pkt->u.stats.general.temperature) ||
2131                   ((priv->statistics.flag &
2132                     STATISTICS_REPLY_FLG_FAT_MODE_MSK) !=
2133                    (pkt->u.stats.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)));
2134
2135         memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
2136
2137         set_bit(STATUS_STATISTICS, &priv->status);
2138
2139         /* Reschedule the statistics timer to occur in
2140          * REG_RECALIB_PERIOD seconds to ensure we get a
2141          * thermal update even if the uCode doesn't give
2142          * us one */
2143         mod_timer(&priv->statistics_periodic, jiffies +
2144                   msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
2145
2146         if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
2147             (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
2148                 iwl4965_rx_calc_noise(priv);
2149 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
2150                 queue_work(priv->workqueue, &priv->sensitivity_work);
2151 #endif
2152         }
2153
2154         iwl_leds_background(priv);
2155
2156         /* If the hardware hasn't reported a change in
2157          * temperature then don't bother computing a
2158          * calibrated temperature value */
2159         if (!change)
2160                 return;
2161
2162         temp = iwl4965_get_temperature(priv);
2163         if (temp < 0)
2164                 return;
2165
2166         if (priv->temperature != temp) {
2167                 if (priv->temperature)
2168                         IWL_DEBUG_TEMP("Temperature changed "
2169                                        "from %dC to %dC\n",
2170                                        KELVIN_TO_CELSIUS(priv->temperature),
2171                                        KELVIN_TO_CELSIUS(temp));
2172                 else
2173                         IWL_DEBUG_TEMP("Temperature "
2174                                        "initialized to %dC\n",
2175                                        KELVIN_TO_CELSIUS(temp));
2176         }
2177
2178         priv->temperature = temp;
2179         set_bit(STATUS_TEMPERATURE, &priv->status);
2180
2181         if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
2182                      iwl4965_is_temp_calib_needed(priv))
2183                 queue_work(priv->workqueue, &priv->txpower_work);
2184 }
2185
2186 static void iwl4965_add_radiotap(struct iwl_priv *priv,
2187                                  struct sk_buff *skb,
2188                                  struct iwl4965_rx_phy_res *rx_start,
2189                                  struct ieee80211_rx_status *stats,
2190                                  u32 ampdu_status)
2191 {
2192         s8 signal = stats->signal;
2193         s8 noise = 0;
2194         int rate = stats->rate_idx;
2195         u64 tsf = stats->mactime;
2196         __le16 antenna;
2197         __le16 phy_flags_hw = rx_start->phy_flags;
2198         struct iwl4965_rt_rx_hdr {
2199                 struct ieee80211_radiotap_header rt_hdr;
2200                 __le64 rt_tsf;          /* TSF */
2201                 u8 rt_flags;            /* radiotap packet flags */
2202                 u8 rt_rate;             /* rate in 500kb/s */
2203                 __le16 rt_channelMHz;   /* channel in MHz */
2204                 __le16 rt_chbitmask;    /* channel bitfield */
2205                 s8 rt_dbmsignal;        /* signal in dBm, kluged to signed */
2206                 s8 rt_dbmnoise;
2207                 u8 rt_antenna;          /* antenna number */
2208         } __attribute__ ((packed)) *iwl4965_rt;
2209
2210         /* TODO: We won't have enough headroom for HT frames. Fix it later. */
2211         if (skb_headroom(skb) < sizeof(*iwl4965_rt)) {
2212                 if (net_ratelimit())
2213                         printk(KERN_ERR "not enough headroom [%d] for "
2214                                "radiotap head [%zd]\n",
2215                                skb_headroom(skb), sizeof(*iwl4965_rt));
2216                 return;
2217         }
2218
2219         /* put radiotap header in front of 802.11 header and data */
2220         iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt));
2221
2222         /* initialise radiotap header */
2223         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
2224         iwl4965_rt->rt_hdr.it_pad = 0;
2225
2226         /* total header + data */
2227         put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt)),
2228                       &iwl4965_rt->rt_hdr.it_len);
2229
2230         /* Indicate all the fields we add to the radiotap header */
2231         put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
2232                                   (1 << IEEE80211_RADIOTAP_FLAGS) |
2233                                   (1 << IEEE80211_RADIOTAP_RATE) |
2234                                   (1 << IEEE80211_RADIOTAP_CHANNEL) |
2235                                   (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
2236                                   (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
2237                                   (1 << IEEE80211_RADIOTAP_ANTENNA)),
2238                       &iwl4965_rt->rt_hdr.it_present);
2239
2240         /* Zero the flags, we'll add to them as we go */
2241         iwl4965_rt->rt_flags = 0;
2242
2243         put_unaligned(cpu_to_le64(tsf), &iwl4965_rt->rt_tsf);
2244
2245         iwl4965_rt->rt_dbmsignal = signal;
2246         iwl4965_rt->rt_dbmnoise = noise;
2247
2248         /* Convert the channel frequency and set the flags */
2249         put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz);
2250         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
2251                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM |
2252                                           IEEE80211_CHAN_5GHZ),
2253                               &iwl4965_rt->rt_chbitmask);
2254         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
2255                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK |
2256                                           IEEE80211_CHAN_2GHZ),
2257                               &iwl4965_rt->rt_chbitmask);
2258         else    /* 802.11g */
2259                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM |
2260                                           IEEE80211_CHAN_2GHZ),
2261                               &iwl4965_rt->rt_chbitmask);
2262
2263         if (rate == -1)
2264                 iwl4965_rt->rt_rate = 0;
2265         else
2266                 iwl4965_rt->rt_rate = iwl_rates[rate].ieee;
2267
2268         /*
2269          * "antenna number"
2270          *
2271          * It seems that the antenna field in the phy flags value
2272          * is actually a bitfield. This is undefined by radiotap,
2273          * it wants an actual antenna number but I always get "7"
2274          * for most legacy frames I receive indicating that the
2275          * same frame was received on all three RX chains.
2276          *
2277          * I think this field should be removed in favour of a
2278          * new 802.11n radiotap field "RX chains" that is defined
2279          * as a bitmask.
2280          */
2281         antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
2282         iwl4965_rt->rt_antenna = le16_to_cpu(antenna) >> 4;
2283
2284         /* set the preamble flag if appropriate */
2285         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
2286                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
2287
2288         stats->flag |= RX_FLAG_RADIOTAP;
2289 }
2290
2291 static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2292 {
2293         /* 0 - mgmt, 1 - cnt, 2 - data */
2294         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2295         priv->rx_stats[idx].cnt++;
2296         priv->rx_stats[idx].bytes += len;
2297 }
2298
2299 /*
2300  * returns non-zero if packet should be dropped
2301  */
2302 static int iwl4965_set_decrypted_flag(struct iwl_priv *priv,
2303                                       struct ieee80211_hdr *hdr,
2304                                       u32 decrypt_res,
2305                                       struct ieee80211_rx_status *stats)
2306 {
2307         u16 fc = le16_to_cpu(hdr->frame_control);
2308
2309         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2310                 return 0;
2311
2312         if (!(fc & IEEE80211_FCTL_PROTECTED))
2313                 return 0;
2314
2315         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2316         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2317         case RX_RES_STATUS_SEC_TYPE_TKIP:
2318                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2319                  * Decryption will be done in SW. */
2320                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2321                     RX_RES_STATUS_BAD_KEY_TTAK)
2322                         break;
2323
2324         case RX_RES_STATUS_SEC_TYPE_WEP:
2325                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2326                     RX_RES_STATUS_BAD_ICV_MIC) {
2327                         /* bad ICV, the packet is destroyed since the
2328                          * decryption is inplace, drop it */
2329                         IWL_DEBUG_RX("Packet destroyed\n");
2330                         return -1;
2331                 }
2332         case RX_RES_STATUS_SEC_TYPE_CCMP:
2333                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2334                     RX_RES_STATUS_DECRYPT_OK) {
2335                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2336                         stats->flag |= RX_FLAG_DECRYPTED;
2337                 }
2338                 break;
2339
2340         default:
2341                 break;
2342         }
2343         return 0;
2344 }
2345
2346 static u32 iwl4965_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
2347 {
2348         u32 decrypt_out = 0;
2349
2350         if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
2351                                         RX_RES_STATUS_STATION_FOUND)
2352                 decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
2353                                 RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
2354
2355         decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
2356
2357         /* packet was not encrypted */
2358         if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
2359                                         RX_RES_STATUS_SEC_TYPE_NONE)
2360                 return decrypt_out;
2361
2362         /* packet was encrypted with unknown alg */
2363         if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
2364                                         RX_RES_STATUS_SEC_TYPE_ERR)
2365                 return decrypt_out;
2366
2367         /* decryption was not done in HW */
2368         if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
2369                                         RX_MPDU_RES_STATUS_DEC_DONE_MSK)
2370                 return decrypt_out;
2371
2372         switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
2373
2374         case RX_RES_STATUS_SEC_TYPE_CCMP:
2375                 /* alg is CCM: check MIC only */
2376                 if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
2377                         /* Bad MIC */
2378                         decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
2379                 else
2380                         decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
2381
2382                 break;
2383
2384         case RX_RES_STATUS_SEC_TYPE_TKIP:
2385                 if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
2386                         /* Bad TTAK */
2387                         decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
2388                         break;
2389                 }
2390                 /* fall through if TTAK OK */
2391         default:
2392                 if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
2393                         decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
2394                 else
2395                         decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
2396                 break;
2397         };
2398
2399         IWL_DEBUG_RX("decrypt_in:0x%x  decrypt_out = 0x%x\n",
2400                                         decrypt_in, decrypt_out);
2401
2402         return decrypt_out;
2403 }
2404
2405 static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
2406                                        int include_phy,
2407                                        struct iwl_rx_mem_buffer *rxb,
2408                                        struct ieee80211_rx_status *stats)
2409 {
2410         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2411         struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
2412             (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL;
2413         struct ieee80211_hdr *hdr;
2414         u16 len;
2415         __le32 *rx_end;
2416         unsigned int skblen;
2417         u32 ampdu_status;
2418         u32 ampdu_status_legacy;
2419
2420         if (!include_phy && priv->last_phy_res[0])
2421                 rx_start = (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
2422
2423         if (!rx_start) {
2424                 IWL_ERROR("MPDU frame without a PHY data\n");
2425                 return;
2426         }
2427         if (include_phy) {
2428                 hdr = (struct ieee80211_hdr *)((u8 *) & rx_start[1] +
2429                                                rx_start->cfg_phy_cnt);
2430
2431                 len = le16_to_cpu(rx_start->byte_count);
2432
2433                 rx_end = (__le32 *) ((u8 *) & pkt->u.raw[0] +
2434                                   sizeof(struct iwl4965_rx_phy_res) +
2435                                   rx_start->cfg_phy_cnt + len);
2436
2437         } else {
2438                 struct iwl4965_rx_mpdu_res_start *amsdu =
2439                     (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
2440
2441                 hdr = (struct ieee80211_hdr *)(pkt->u.raw +
2442                                sizeof(struct iwl4965_rx_mpdu_res_start));
2443                 len =  le16_to_cpu(amsdu->byte_count);
2444                 rx_start->byte_count = amsdu->byte_count;
2445                 rx_end = (__le32 *) (((u8 *) hdr) + len);
2446         }
2447         /* In monitor mode allow 802.11 ACk frames (10 bytes) */
2448         if (len > priv->hw_params.max_pkt_size ||
2449             len < ((priv->iw_mode == IEEE80211_IF_TYPE_MNTR) ? 10 : 16)) {
2450                 IWL_WARNING("byte count out of range [16,4K] : %d\n", len);
2451                 return;
2452         }
2453
2454         ampdu_status = le32_to_cpu(*rx_end);
2455         skblen = ((u8 *) rx_end - (u8 *) & pkt->u.raw[0]) + sizeof(u32);
2456
2457         if (!include_phy) {
2458                 /* New status scheme, need to translate */
2459                 ampdu_status_legacy = ampdu_status;
2460                 ampdu_status = iwl4965_translate_rx_status(priv, ampdu_status);
2461         }
2462
2463         /* start from MAC */
2464         skb_reserve(rxb->skb, (void *)hdr - (void *)pkt);
2465         skb_put(rxb->skb, len); /* end where data ends */
2466
2467         /* We only process data packets if the interface is open */
2468         if (unlikely(!priv->is_open)) {
2469                 IWL_DEBUG_DROP_LIMIT
2470                     ("Dropping packet while interface is not open.\n");
2471                 return;
2472         }
2473
2474         stats->flag = 0;
2475         hdr = (struct ieee80211_hdr *)rxb->skb->data;
2476
2477         /*  in case of HW accelerated crypto and bad decryption, drop */
2478         if (!priv->hw_params.sw_crypto &&
2479             iwl4965_set_decrypted_flag(priv, hdr, ampdu_status, stats))
2480                 return;
2481
2482         if (priv->add_radiotap)
2483                 iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status);
2484
2485         iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len);
2486         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
2487         priv->alloc_rxb_skb--;
2488         rxb->skb = NULL;
2489 }
2490
2491 /* Calc max signal level (dBm) among 3 possible receivers */
2492 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2493                              struct iwl4965_rx_phy_res *rx_resp)
2494 {
2495         /* data from PHY/DSP regarding signal strength, etc.,
2496          *   contents are always there, not configurable by host.  */
2497         struct iwl4965_rx_non_cfg_phy *ncphy =
2498             (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy;
2499         u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL_AGC_DB_MASK)
2500                         >> IWL_AGC_DB_POS;
2501
2502         u32 valid_antennae =
2503             (le16_to_cpu(rx_resp->phy_flags) & RX_PHY_FLAGS_ANTENNAE_MASK)
2504                         >> RX_PHY_FLAGS_ANTENNAE_OFFSET;
2505         u8 max_rssi = 0;
2506         u32 i;
2507
2508         /* Find max rssi among 3 possible receivers.
2509          * These values are measured by the digital signal processor (DSP).
2510          * They should stay fairly constant even as the signal strength varies,
2511          *   if the radio's automatic gain control (AGC) is working right.
2512          * AGC value (see below) will provide the "interesting" info. */
2513         for (i = 0; i < 3; i++)
2514                 if (valid_antennae & (1 << i))
2515                         max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2516
2517         IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2518                 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2519                 max_rssi, agc);
2520
2521         /* dBm = max_rssi dB - agc dB - constant.
2522          * Higher AGC (higher radio gain) means lower signal. */
2523         return (max_rssi - agc - IWL_RSSI_OFFSET);
2524 }
2525
2526 static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
2527 {
2528         unsigned long flags;
2529
2530         spin_lock_irqsave(&priv->sta_lock, flags);
2531         priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
2532         priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
2533         priv->stations[sta_id].sta.sta.modify_mask = 0;
2534         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
2535         spin_unlock_irqrestore(&priv->sta_lock, flags);
2536
2537         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
2538 }
2539
2540 static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
2541 {
2542         /* FIXME: need locking over ps_status ??? */
2543         u8 sta_id = iwl_find_station(priv, addr);
2544
2545         if (sta_id != IWL_INVALID_STATION) {
2546                 u8 sta_awake = priv->stations[sta_id].
2547                                 ps_status == STA_PS_STATUS_WAKE;
2548
2549                 if (sta_awake && ps_bit)
2550                         priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
2551                 else if (!sta_awake && !ps_bit) {
2552                         iwl4965_sta_modify_ps_wake(priv, sta_id);
2553                         priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
2554                 }
2555         }
2556 }
2557 #ifdef CONFIG_IWLWIFI_DEBUG
2558
2559 /**
2560  * iwl4965_dbg_report_frame - dump frame to syslog during debug sessions
2561  *
2562  * You may hack this function to show different aspects of received frames,
2563  * including selective frame dumps.
2564  * group100 parameter selects whether to show 1 out of 100 good frames.
2565  *
2566  * TODO:  This was originally written for 3945, need to audit for
2567  *        proper operation with 4965.
2568  */
2569 static void iwl4965_dbg_report_frame(struct iwl_priv *priv,
2570                       struct iwl_rx_packet *pkt,
2571                       struct ieee80211_hdr *header, int group100)
2572 {
2573         u32 to_us;
2574         u32 print_summary = 0;
2575         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
2576         u32 hundred = 0;
2577         u32 dataframe = 0;
2578         u16 fc;
2579         u16 seq_ctl;
2580         u16 channel;
2581         u16 phy_flags;
2582         int rate_sym;
2583         u16 length;
2584         u16 status;
2585         u16 bcn_tmr;
2586         u32 tsf_low;
2587         u64 tsf;
2588         u8 rssi;
2589         u8 agc;
2590         u16 sig_avg;
2591         u16 noise_diff;
2592         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
2593         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
2594         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
2595         u8 *data = IWL_RX_DATA(pkt);
2596
2597         if (likely(!(priv->debug_level & IWL_DL_RX)))
2598                 return;
2599
2600         /* MAC header */
2601         fc = le16_to_cpu(header->frame_control);
2602         seq_ctl = le16_to_cpu(header->seq_ctrl);
2603
2604         /* metadata */
2605         channel = le16_to_cpu(rx_hdr->channel);
2606         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
2607         rate_sym = rx_hdr->rate;
2608         length = le16_to_cpu(rx_hdr->len);
2609
2610         /* end-of-frame status and timestamp */
2611         status = le32_to_cpu(rx_end->status);
2612         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
2613         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
2614         tsf = le64_to_cpu(rx_end->timestamp);
2615
2616         /* signal statistics */
2617         rssi = rx_stats->rssi;
2618         agc = rx_stats->agc;
2619         sig_avg = le16_to_cpu(rx_stats->sig_avg);
2620         noise_diff = le16_to_cpu(rx_stats->noise_diff);
2621
2622         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
2623
2624         /* if data frame is to us and all is good,
2625          *   (optionally) print summary for only 1 out of every 100 */
2626         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
2627             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
2628                 dataframe = 1;
2629                 if (!group100)
2630                         print_summary = 1;      /* print each frame */
2631                 else if (priv->framecnt_to_us < 100) {
2632                         priv->framecnt_to_us++;
2633                         print_summary = 0;
2634                 } else {
2635                         priv->framecnt_to_us = 0;
2636                         print_summary = 1;
2637                         hundred = 1;
2638                 }
2639         } else {
2640                 /* print summary for all other frames */
2641                 print_summary = 1;
2642         }
2643
2644         if (print_summary) {
2645                 char *title;
2646                 int rate_idx;
2647                 u32 bitrate;
2648
2649                 if (hundred)
2650                         title = "100Frames";
2651                 else if (fc & IEEE80211_FCTL_RETRY)
2652                         title = "Retry";
2653                 else if (ieee80211_is_assoc_response(fc))
2654                         title = "AscRsp";
2655                 else if (ieee80211_is_reassoc_response(fc))
2656                         title = "RasRsp";
2657                 else if (ieee80211_is_probe_response(fc)) {
2658                         title = "PrbRsp";
2659                         print_dump = 1; /* dump frame contents */
2660                 } else if (ieee80211_is_beacon(fc)) {
2661                         title = "Beacon";
2662                         print_dump = 1; /* dump frame contents */
2663                 } else if (ieee80211_is_atim(fc))
2664                         title = "ATIM";
2665                 else if (ieee80211_is_auth(fc))
2666                         title = "Auth";
2667                 else if (ieee80211_is_deauth(fc))
2668                         title = "DeAuth";
2669                 else if (ieee80211_is_disassoc(fc))
2670                         title = "DisAssoc";
2671                 else
2672                         title = "Frame";
2673
2674                 rate_idx = iwl4965_hwrate_to_plcp_idx(rate_sym);
2675                 if (unlikely(rate_idx == -1))
2676                         bitrate = 0;
2677                 else
2678                         bitrate = iwl_rates[rate_idx].ieee / 2;
2679
2680                 /* print frame summary.
2681                  * MAC addresses show just the last byte (for brevity),
2682                  *    but you can hack it to show more, if you'd like to. */
2683                 if (dataframe)
2684                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
2685                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
2686                                      title, fc, header->addr1[5],
2687                                      length, rssi, channel, bitrate);
2688                 else {
2689                         /* src/dst addresses assume managed mode */
2690                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
2691                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
2692                                      "phy=0x%02x, chnl=%d\n",
2693                                      title, fc, header->addr1[5],
2694                                      header->addr3[5], rssi,
2695                                      tsf_low - priv->scan_start_tsf,
2696                                      phy_flags, channel);
2697                 }
2698         }
2699         if (print_dump)
2700                 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
2701 }
2702 #else
2703 static inline void iwl4965_dbg_report_frame(struct iwl_priv *priv,
2704                                             struct iwl_rx_packet *pkt,
2705                                             struct ieee80211_hdr *header,
2706                                             int group100)
2707 {
2708 }
2709 #endif
2710
2711
2712
2713 /* Called for REPLY_RX (legacy ABG frames), or
2714  * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
2715 static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
2716                                 struct iwl_rx_mem_buffer *rxb)
2717 {
2718         struct ieee80211_hdr *header;
2719         struct ieee80211_rx_status rx_status;
2720         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2721         /* Use phy data (Rx signal strength, etc.) contained within
2722          *   this rx packet for legacy frames,
2723          *   or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
2724         int include_phy = (pkt->hdr.cmd == REPLY_RX);
2725         struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
2726                 (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) :
2727                 (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
2728         __le32 *rx_end;
2729         unsigned int len = 0;
2730         u16 fc;
2731         u8 network_packet;
2732
2733         rx_status.mactime = le64_to_cpu(rx_start->timestamp);
2734         rx_status.freq =
2735                 ieee80211_channel_to_frequency(le16_to_cpu(rx_start->channel));
2736         rx_status.band = (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
2737                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
2738         rx_status.rate_idx =
2739                 iwl4965_hwrate_to_plcp_idx(le32_to_cpu(rx_start->rate_n_flags));
2740         if (rx_status.band == IEEE80211_BAND_5GHZ)
2741                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
2742
2743         rx_status.antenna = 0;
2744         rx_status.flag = 0;
2745
2746         if ((unlikely(rx_start->cfg_phy_cnt > 20))) {
2747                 IWL_DEBUG_DROP("dsp size out of range [0,20]: %d/n",
2748                                 rx_start->cfg_phy_cnt);
2749                 return;
2750         }
2751
2752         if (!include_phy) {
2753                 if (priv->last_phy_res[0])
2754                         rx_start = (struct iwl4965_rx_phy_res *)
2755                                 &priv->last_phy_res[1];
2756                 else
2757                         rx_start = NULL;
2758         }
2759
2760         if (!rx_start) {
2761                 IWL_ERROR("MPDU frame without a PHY data\n");
2762                 return;
2763         }
2764
2765         if (include_phy) {
2766                 header = (struct ieee80211_hdr *)((u8 *) & rx_start[1]
2767                                                   + rx_start->cfg_phy_cnt);
2768
2769                 len = le16_to_cpu(rx_start->byte_count);
2770                 rx_end = (__le32 *)(pkt->u.raw + rx_start->cfg_phy_cnt +
2771                                   sizeof(struct iwl4965_rx_phy_res) + len);
2772         } else {
2773                 struct iwl4965_rx_mpdu_res_start *amsdu =
2774                         (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
2775
2776                 header = (void *)(pkt->u.raw +
2777                         sizeof(struct iwl4965_rx_mpdu_res_start));
2778                 len = le16_to_cpu(amsdu->byte_count);
2779                 rx_end = (__le32 *) (pkt->u.raw +
2780                         sizeof(struct iwl4965_rx_mpdu_res_start) + len);
2781         }
2782
2783         if (!(*rx_end & RX_RES_STATUS_NO_CRC32_ERROR) ||
2784             !(*rx_end & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
2785                 IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
2786                                 le32_to_cpu(*rx_end));
2787                 return;
2788         }
2789
2790         priv->ucode_beacon_time = le32_to_cpu(rx_start->beacon_time_stamp);
2791
2792         /* Find max signal strength (dBm) among 3 antenna/receiver chains */
2793         rx_status.signal = iwl4965_calc_rssi(priv, rx_start);
2794
2795         /* Meaningful noise values are available only from beacon statistics,
2796          *   which are gathered only when associated, and indicate noise
2797          *   only for the associated network channel ...
2798          * Ignore these noise values while scanning (other channels) */
2799         if (iwl_is_associated(priv) &&
2800             !test_bit(STATUS_SCANNING, &priv->status)) {
2801                 rx_status.noise = priv->last_rx_noise;
2802                 rx_status.qual = iwl4965_calc_sig_qual(rx_status.signal,
2803                                                          rx_status.noise);
2804         } else {
2805                 rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2806                 rx_status.qual = iwl4965_calc_sig_qual(rx_status.signal, 0);
2807         }
2808
2809         /* Reset beacon noise level if not associated. */
2810         if (!iwl_is_associated(priv))
2811                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2812
2813         /* Set "1" to report good data frames in groups of 100 */
2814         /* FIXME: need to optimze the call: */
2815         iwl4965_dbg_report_frame(priv, pkt, header, 1);
2816
2817         IWL_DEBUG_STATS_LIMIT("Rssi %d, noise %d, qual %d, TSF %llu\n",
2818                               rx_status.signal, rx_status.noise, rx_status.signal,
2819                               (unsigned long long)rx_status.mactime);
2820
2821
2822         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2823                 iwl4965_handle_data_packet(priv, 1, include_phy,
2824                                                  rxb, &rx_status);
2825                 return;
2826         }
2827
2828         network_packet = iwl4965_is_network_packet(priv, header);
2829         if (network_packet) {
2830                 priv->last_rx_rssi = rx_status.signal;
2831                 priv->last_beacon_time =  priv->ucode_beacon_time;
2832                 priv->last_tsf = le64_to_cpu(rx_start->timestamp);
2833         }
2834
2835         fc = le16_to_cpu(header->frame_control);
2836         switch (fc & IEEE80211_FCTL_FTYPE) {
2837         case IEEE80211_FTYPE_MGMT:
2838                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2839                         iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
2840                                                 header->addr2);
2841                 iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &rx_status);
2842                 break;
2843
2844         case IEEE80211_FTYPE_CTL:
2845 #ifdef CONFIG_IWL4965_HT
2846                 switch (fc & IEEE80211_FCTL_STYPE) {
2847                 case IEEE80211_STYPE_BACK_REQ:
2848                         IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
2849                         iwl4965_handle_data_packet(priv, 0, include_phy,
2850                                                 rxb, &rx_status);
2851                         break;
2852                 default:
2853                         break;
2854                 }
2855 #endif
2856                 break;
2857
2858         case IEEE80211_FTYPE_DATA: {
2859                 DECLARE_MAC_BUF(mac1);
2860                 DECLARE_MAC_BUF(mac2);
2861                 DECLARE_MAC_BUF(mac3);
2862
2863                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2864                         iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
2865                                                 header->addr2);
2866
2867                 if (unlikely(!network_packet))
2868                         IWL_DEBUG_DROP("Dropping (non network): "
2869                                        "%s, %s, %s\n",
2870                                        print_mac(mac1, header->addr1),
2871                                        print_mac(mac2, header->addr2),
2872                                        print_mac(mac3, header->addr3));
2873                 else if (unlikely(iwl4965_is_duplicate_packet(priv, header)))
2874                         IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n",
2875                                        print_mac(mac1, header->addr1),
2876                                        print_mac(mac2, header->addr2),
2877                                        print_mac(mac3, header->addr3));
2878                 else
2879                         iwl4965_handle_data_packet(priv, 1, include_phy, rxb,
2880                                                    &rx_status);
2881                 break;
2882         }
2883         default:
2884                 break;
2885
2886         }
2887 }
2888
2889 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
2890  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
2891 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
2892                                     struct iwl_rx_mem_buffer *rxb)
2893 {
2894         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2895         priv->last_phy_res[0] = 1;
2896         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
2897                sizeof(struct iwl4965_rx_phy_res));
2898 }
2899
2900 #ifdef CONFIG_IWL4965_HT
2901
2902 /**
2903  * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
2904  */
2905 static void iwl4965_sta_modify_enable_tid_tx(struct iwl_priv *priv,
2906                                          int sta_id, int tid)
2907 {
2908         unsigned long flags;
2909
2910         /* Remove "disable" flag, to enable Tx for this TID */
2911         spin_lock_irqsave(&priv->sta_lock, flags);
2912         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
2913         priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
2914         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
2915         spin_unlock_irqrestore(&priv->sta_lock, flags);
2916
2917         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
2918 }
2919
2920 /**
2921  * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack
2922  *
2923  * Go through block-ack's bitmap of ACK'd frames, update driver's record of
2924  * ACK vs. not.  This gets sent to mac80211, then to rate scaling algo.
2925  */
2926 static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv,
2927                                                  struct iwl_ht_agg *agg,
2928                                                  struct iwl4965_compressed_ba_resp*
2929                                                  ba_resp)
2930
2931 {
2932         int i, sh, ack;
2933         u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl);
2934         u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
2935         u64 bitmap;
2936         int successes = 0;
2937         struct ieee80211_tx_info *info;
2938
2939         if (unlikely(!agg->wait_for_ba))  {
2940                 IWL_ERROR("Received BA when not expected\n");
2941                 return -EINVAL;
2942         }
2943
2944         /* Mark that the expected block-ack response arrived */
2945         agg->wait_for_ba = 0;
2946         IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl);
2947
2948         /* Calculate shift to align block-ack bits with our Tx window bits */
2949         sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4);
2950         if (sh < 0) /* tbw something is wrong with indices */
2951                 sh += 0x100;
2952
2953         /* don't use 64-bit values for now */
2954         bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
2955
2956         if (agg->frame_count > (64 - sh)) {
2957                 IWL_DEBUG_TX_REPLY("more frames than bitmap size");
2958                 return -1;
2959         }
2960
2961         /* check for success or failure according to the
2962          * transmitted bitmap and block-ack bitmap */
2963         bitmap &= agg->bitmap;
2964
2965         /* For each frame attempted in aggregation,
2966          * update driver's record of tx frame's status. */
2967         for (i = 0; i < agg->frame_count ; i++) {
2968                 ack = bitmap & (1 << i);
2969                 successes += !!ack;
2970                 IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
2971                         ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff,
2972                         agg->start_idx + i);
2973         }
2974
2975         info = IEEE80211_SKB_CB(priv->txq[scd_flow].txb[agg->start_idx].skb[0]);
2976         memset(&info->status, 0, sizeof(info->status));
2977         info->flags = IEEE80211_TX_STAT_ACK;
2978         info->flags |= IEEE80211_TX_STAT_AMPDU;
2979         info->status.ampdu_ack_map = successes;
2980         info->status.ampdu_ack_len = agg->frame_count;
2981         iwl4965_hwrate_to_tx_control(priv, agg->rate_n_flags, info);
2982
2983         IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap);
2984
2985         return 0;
2986 }
2987
2988 /**
2989  * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
2990  */
2991 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
2992                                             u16 txq_id)
2993 {
2994         /* Simply stop the queue, but don't change any configuration;
2995          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
2996         iwl_write_prph(priv,
2997                 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
2998                 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
2999                 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
3000 }
3001
3002 /**
3003  * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
3004  * priv->lock must be held by the caller
3005  */
3006 static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
3007                                         u16 ssn_idx, u8 tx_fifo)
3008 {
3009         int ret = 0;
3010
3011         if (IWL_BACK_QUEUE_FIRST_ID > txq_id) {
3012                 IWL_WARNING("queue number too small: %d, must be > %d\n",
3013                                 txq_id, IWL_BACK_QUEUE_FIRST_ID);
3014                 return -EINVAL;
3015         }
3016
3017         ret = iwl_grab_nic_access(priv);
3018         if (ret)
3019                 return ret;
3020
3021         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
3022
3023         iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
3024
3025         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
3026         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
3027         /* supposes that ssn_idx is valid (!= 0xFFF) */
3028         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
3029
3030         iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
3031         iwl_txq_ctx_deactivate(priv, txq_id);
3032         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
3033
3034         iwl_release_nic_access(priv);
3035
3036         return 0;
3037 }
3038
3039 int iwl4965_check_empty_hw_queue(struct iwl_priv *priv, int sta_id,
3040                                          u8 tid, int txq_id)
3041 {
3042         struct iwl_queue *q = &priv->txq[txq_id].q;
3043         u8 *addr = priv->stations[sta_id].sta.sta.addr;
3044         struct iwl_tid_data *tid_data = &priv->stations[sta_id].tid[tid];
3045
3046         switch (priv->stations[sta_id].tid[tid].agg.state) {
3047         case IWL_EMPTYING_HW_QUEUE_DELBA:
3048                 /* We are reclaiming the last packet of the */
3049                 /* aggregated HW queue */
3050                 if (txq_id  == tid_data->agg.txq_id &&
3051                     q->read_ptr == q->write_ptr) {
3052                         u16 ssn = SEQ_TO_SN(tid_data->seq_number);
3053                         int tx_fifo = default_tid_to_tx_fifo[tid];
3054                         IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n");
3055                         iwl4965_tx_queue_agg_disable(priv, txq_id,
3056                                                      ssn, tx_fifo);
3057                         tid_data->agg.state = IWL_AGG_OFF;
3058                         ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, addr, tid);
3059                 }
3060                 break;
3061         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3062                 /* We are reclaiming the last packet of the queue */
3063                 if (tid_data->tfds_in_queue == 0) {
3064                         IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n");
3065                         tid_data->agg.state = IWL_AGG_ON;
3066                         ieee80211_start_tx_ba_cb_irqsafe(priv->hw, addr, tid);
3067                 }
3068                 break;
3069         }
3070         return 0;
3071 }
3072
3073 /**
3074  * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
3075  *
3076  * Handles block-acknowledge notification from device, which reports success
3077  * of frames sent via aggregation.
3078  */
3079 static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
3080                                            struct iwl_rx_mem_buffer *rxb)
3081 {
3082         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3083         struct iwl4965_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
3084         int index;
3085         struct iwl_tx_queue *txq = NULL;
3086         struct iwl_ht_agg *agg;
3087         DECLARE_MAC_BUF(mac);
3088
3089         /* "flow" corresponds to Tx queue */
3090         u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
3091
3092         /* "ssn" is start of block-ack Tx window, corresponds to index
3093          * (in Tx queue's circular buffer) of first TFD/frame in window */
3094         u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
3095
3096         if (scd_flow >= priv->hw_params.max_txq_num) {
3097                 IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
3098                 return;
3099         }
3100
3101         txq = &priv->txq[scd_flow];
3102         agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
3103
3104         /* Find index just before block-ack window */
3105         index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
3106
3107         /* TODO: Need to get this copy more safely - now good for debug */
3108
3109         IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
3110                            "sta_id = %d\n",
3111                            agg->wait_for_ba,
3112                            print_mac(mac, (u8*) &ba_resp->sta_addr_lo32),
3113                            ba_resp->sta_id);
3114         IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
3115                            "%d, scd_ssn = %d\n",
3116                            ba_resp->tid,
3117                            ba_resp->seq_ctl,
3118                            (unsigned long long)le64_to_cpu(ba_resp->bitmap),
3119                            ba_resp->scd_flow,
3120                            ba_resp->scd_ssn);
3121         IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n",
3122                            agg->start_idx,
3123                            (unsigned long long)agg->bitmap);
3124
3125         /* Update driver's record of ACK vs. not for each frame in window */
3126         iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp);
3127
3128         /* Release all TFDs before the SSN, i.e. all TFDs in front of
3129          * block-ack window (we assume that they've been successfully
3130          * transmitted ... if not, it's too late anyway). */
3131         if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) {
3132                 /* calculate mac80211 ampdu sw queue to wake */
3133                 int ampdu_q =
3134                    scd_flow - IWL_BACK_QUEUE_FIRST_ID + priv->hw->queues;
3135                 int freed = iwl_tx_queue_reclaim(priv, scd_flow, index);
3136                 priv->stations[ba_resp->sta_id].
3137                         tid[ba_resp->tid].tfds_in_queue -= freed;
3138                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
3139                         priv->mac80211_registered &&
3140                         agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3141                         ieee80211_wake_queue(priv->hw, ampdu_q);
3142                 iwl4965_check_empty_hw_queue(priv, ba_resp->sta_id,
3143                         ba_resp->tid, scd_flow);
3144         }
3145 }
3146
3147 /**
3148  * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
3149  */
3150 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
3151                                         u16 txq_id)
3152 {
3153         u32 tbl_dw_addr;
3154         u32 tbl_dw;
3155         u16 scd_q2ratid;
3156
3157         scd_q2ratid = ra_tid & IWL49_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
3158
3159         tbl_dw_addr = priv->scd_base_addr +
3160                         IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
3161
3162         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
3163
3164         if (txq_id & 0x1)
3165                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
3166         else
3167                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
3168
3169         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
3170
3171         return 0;
3172 }
3173
3174
3175 /**
3176  * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
3177  *
3178  * NOTE:  txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID,
3179  *        i.e. it must be one of the higher queues used for aggregation
3180  */
3181 static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id,
3182                                        int tx_fifo, int sta_id, int tid,
3183                                        u16 ssn_idx)
3184 {
3185         unsigned long flags;
3186         int rc;
3187         u16 ra_tid;
3188
3189         if (IWL_BACK_QUEUE_FIRST_ID > txq_id)
3190                 IWL_WARNING("queue number too small: %d, must be > %d\n",
3191                         txq_id, IWL_BACK_QUEUE_FIRST_ID);
3192
3193         ra_tid = BUILD_RAxTID(sta_id, tid);
3194
3195         /* Modify device's station table to Tx this TID */
3196         iwl4965_sta_modify_enable_tid_tx(priv, sta_id, tid);
3197
3198         spin_lock_irqsave(&priv->lock, flags);
3199         rc = iwl_grab_nic_access(priv);
3200         if (rc) {
3201                 spin_unlock_irqrestore(&priv->lock, flags);
3202                 return rc;
3203         }
3204
3205         /* Stop this Tx queue before configuring it */
3206         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
3207
3208         /* Map receiver-address / traffic-ID to this queue */
3209         iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
3210
3211         /* Set this queue as a chain-building queue */
3212         iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
3213
3214         /* Place first TFD at index corresponding to start sequence number.
3215          * Assumes that ssn_idx is valid (!= 0xFFF) */
3216         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
3217         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
3218         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
3219
3220         /* Set up Tx window size and frame limit for this queue */
3221         iwl_write_targ_mem(priv,
3222                 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
3223                 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
3224                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
3225
3226         iwl_write_targ_mem(priv, priv->scd_base_addr +
3227                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
3228                 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
3229                 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
3230
3231         iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
3232
3233         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
3234         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
3235
3236         iwl_release_nic_access(priv);
3237         spin_unlock_irqrestore(&priv->lock, flags);
3238
3239         return 0;
3240 }
3241
3242 #endif /* CONFIG_IWL4965_HT */
3243
3244
3245 #ifdef CONFIG_IWL4965_HT
3246 static int iwl4965_rx_agg_start(struct iwl_priv *priv,
3247                                 const u8 *addr, int tid, u16 ssn)
3248 {
3249         unsigned long flags;
3250         int sta_id;
3251
3252         sta_id = iwl_find_station(priv, addr);
3253         if (sta_id == IWL_INVALID_STATION)
3254                 return -ENXIO;
3255
3256         spin_lock_irqsave(&priv->sta_lock, flags);
3257         priv->stations[sta_id].sta.station_flags_msk = 0;
3258         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
3259         priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
3260         priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
3261         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3262         spin_unlock_irqrestore(&priv->sta_lock, flags);
3263
3264         return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
3265                                         CMD_ASYNC);
3266 }
3267
3268 static int iwl4965_rx_agg_stop(struct iwl_priv *priv,
3269                                const u8 *addr, int tid)
3270 {
3271         unsigned long flags;
3272         int sta_id;
3273
3274         sta_id = iwl_find_station(priv, addr);
3275         if (sta_id == IWL_INVALID_STATION)
3276                 return -ENXIO;
3277
3278         spin_lock_irqsave(&priv->sta_lock, flags);
3279         priv->stations[sta_id].sta.station_flags_msk = 0;
3280         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
3281         priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
3282         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3283         spin_unlock_irqrestore(&priv->sta_lock, flags);
3284
3285         return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
3286                                         CMD_ASYNC);
3287 }
3288
3289 /*
3290  * Find first available (lowest unused) Tx Queue, mark it "active".
3291  * Called only when finding queue for aggregation.
3292  * Should never return anything < 7, because they should already
3293  * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6).
3294  */
3295 static int iwl4965_txq_ctx_activate_free(struct iwl_priv *priv)
3296 {
3297         int txq_id;
3298
3299         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
3300                 if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk))
3301                         return txq_id;
3302         return -1;
3303 }
3304
3305 static int iwl4965_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra,
3306                                 u16 tid, u16 *start_seq_num)
3307 {
3308         struct iwl_priv *priv = hw->priv;
3309         int sta_id;
3310         int tx_fifo;
3311         int txq_id;
3312         int ssn = -1;
3313         int ret = 0;
3314         unsigned long flags;
3315         struct iwl_tid_data *tid_data;
3316         DECLARE_MAC_BUF(mac);
3317
3318         if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
3319                 tx_fifo = default_tid_to_tx_fifo[tid];
3320         else
3321                 return -EINVAL;
3322
3323         IWL_WARNING("%s on ra = %s tid = %d\n",
3324                         __func__, print_mac(mac, ra), tid);
3325
3326         sta_id = iwl_find_station(priv, ra);
3327         if (sta_id == IWL_INVALID_STATION)
3328                 return -ENXIO;
3329
3330         if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) {
3331                 IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n");
3332                 return -ENXIO;
3333         }
3334
3335         txq_id = iwl4965_txq_ctx_activate_free(priv);
3336         if (txq_id == -1)
3337                 return -ENXIO;
3338
3339         spin_lock_irqsave(&priv->sta_lock, flags);
3340         tid_data = &priv->stations[sta_id].tid[tid];
3341         ssn = SEQ_TO_SN(tid_data->seq_number);
3342         tid_data->agg.txq_id = txq_id;
3343         spin_unlock_irqrestore(&priv->sta_lock, flags);
3344
3345         *start_seq_num = ssn;
3346         ret = iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo,
3347                                           sta_id, tid, ssn);
3348         if (ret)
3349                 return ret;
3350
3351         ret = 0;
3352         if (tid_data->tfds_in_queue == 0) {
3353                 printk(KERN_ERR "HW queue is empty\n");
3354                 tid_data->agg.state = IWL_AGG_ON;
3355                 ieee80211_start_tx_ba_cb_irqsafe(hw, ra, tid);
3356         } else {
3357                 IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n",
3358                                 tid_data->tfds_in_queue);
3359                 tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3360         }
3361         return ret;
3362 }
3363
3364 static int iwl4965_tx_agg_stop(struct ieee80211_hw *hw, const u8 *ra, u16 tid)
3365 {
3366         struct iwl_priv *priv = hw->priv;
3367         int tx_fifo_id, txq_id, sta_id, ssn = -1;
3368         struct iwl_tid_data *tid_data;
3369         int ret, write_ptr, read_ptr;
3370         unsigned long flags;
3371         DECLARE_MAC_BUF(mac);
3372
3373         if (!ra) {
3374                 IWL_ERROR("ra = NULL\n");
3375                 return -EINVAL;
3376         }
3377
3378         if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
3379                 tx_fifo_id = default_tid_to_tx_fifo[tid];
3380         else
3381                 return -EINVAL;
3382
3383         sta_id = iwl_find_station(priv, ra);
3384
3385         if (sta_id == IWL_INVALID_STATION)
3386                 return -ENXIO;
3387
3388         if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON)
3389                 IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n");
3390
3391         tid_data = &priv->stations[sta_id].tid[tid];
3392         ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
3393         txq_id = tid_data->agg.txq_id;
3394         write_ptr = priv->txq[txq_id].q.write_ptr;
3395         read_ptr = priv->txq[txq_id].q.read_ptr;
3396
3397         /* The queue is not empty */
3398         if (write_ptr != read_ptr) {
3399                 IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n");
3400                 priv->stations[sta_id].tid[tid].agg.state =
3401                                 IWL_EMPTYING_HW_QUEUE_DELBA;
3402                 return 0;
3403         }
3404
3405         IWL_DEBUG_HT("HW queue is empty\n");
3406         priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
3407
3408         spin_lock_irqsave(&priv->lock, flags);
3409         ret = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id);
3410         spin_unlock_irqrestore(&priv->lock, flags);
3411
3412         if (ret)
3413                 return ret;
3414
3415         ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, ra, tid);
3416
3417         return 0;
3418 }
3419
3420 int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3421                              enum ieee80211_ampdu_mlme_action action,
3422                              const u8 *addr, u16 tid, u16 *ssn)
3423 {
3424         struct iwl_priv *priv = hw->priv;
3425         DECLARE_MAC_BUF(mac);
3426
3427         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3428                      print_mac(mac, addr), tid);
3429
3430         switch (action) {
3431         case IEEE80211_AMPDU_RX_START:
3432                 IWL_DEBUG_HT("start Rx\n");
3433                 return iwl4965_rx_agg_start(priv, addr, tid, *ssn);
3434         case IEEE80211_AMPDU_RX_STOP:
3435                 IWL_DEBUG_HT("stop Rx\n");
3436                 return iwl4965_rx_agg_stop(priv, addr, tid);
3437         case IEEE80211_AMPDU_TX_START:
3438                 IWL_DEBUG_HT("start Tx\n");
3439                 return iwl4965_tx_agg_start(hw, addr, tid, ssn);
3440         case IEEE80211_AMPDU_TX_STOP:
3441                 IWL_DEBUG_HT("stop Tx\n");
3442                 return iwl4965_tx_agg_stop(hw, addr, tid);
3443         default:
3444                 IWL_DEBUG_HT("unknown\n");
3445                 return -EINVAL;
3446                 break;
3447         }
3448         return 0;
3449 }
3450 #endif /* CONFIG_IWL4965_HT */
3451
3452
3453 static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len)
3454 {
3455         switch (cmd_id) {
3456         case REPLY_RXON:
3457                 return (u16) sizeof(struct iwl4965_rxon_cmd);
3458         default:
3459                 return len;
3460         }
3461 }
3462
3463 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
3464 {
3465         struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
3466         addsta->mode = cmd->mode;
3467         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
3468         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
3469         addsta->station_flags = cmd->station_flags;
3470         addsta->station_flags_msk = cmd->station_flags_msk;
3471         addsta->tid_disable_tx = cmd->tid_disable_tx;
3472         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
3473         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
3474         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
3475         addsta->reserved1 = __constant_cpu_to_le16(0);
3476         addsta->reserved2 = __constant_cpu_to_le32(0);
3477
3478         return (u16)sizeof(struct iwl4965_addsta_cmd);
3479 }
3480
3481 #ifdef CONFIG_IWL4965_HT
3482 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3483 {
3484         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3485                                 tx_resp->frame_count);
3486         return le32_to_cpu(*scd_ssn) & MAX_SN;
3487
3488 }
3489
3490 /**
3491  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3492  */
3493 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3494                                       struct iwl_ht_agg *agg,
3495                                       struct iwl4965_tx_resp_agg *tx_resp,
3496                                       u16 start_idx)
3497 {
3498         u16 status;
3499         struct agg_tx_status *frame_status = &tx_resp->status;
3500         struct ieee80211_tx_info *info = NULL;
3501         struct ieee80211_hdr *hdr = NULL;
3502         int i, sh;
3503         int txq_id, idx;
3504         u16 seq;
3505
3506         if (agg->wait_for_ba)
3507                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3508
3509         agg->frame_count = tx_resp->frame_count;
3510         agg->start_idx = start_idx;
3511         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3512         agg->bitmap = 0;
3513
3514         /* # frames attempted by Tx command */
3515         if (agg->frame_count == 1) {
3516                 /* Only one frame was attempted; no block-ack will arrive */
3517                 status = le16_to_cpu(frame_status[0].status);
3518                 seq  = le16_to_cpu(frame_status[0].sequence);
3519                 idx = SEQ_TO_INDEX(seq);
3520                 txq_id = SEQ_TO_QUEUE(seq);
3521
3522                 /* FIXME: code repetition */
3523                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3524                                    agg->frame_count, agg->start_idx, idx);
3525
3526                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
3527                 info->status.retry_count = tx_resp->failure_frame;
3528                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
3529                 info->flags |= iwl_is_tx_success(status)?
3530                         IEEE80211_TX_STAT_ACK : 0;
3531                 iwl4965_hwrate_to_tx_control(priv,
3532                                              le32_to_cpu(tx_resp->rate_n_flags),
3533                                              info);
3534                 /* FIXME: code repetition end */
3535
3536                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3537                                     status & 0xff, tx_resp->failure_frame);
3538                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3539                         iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3540
3541                 agg->wait_for_ba = 0;
3542         } else {
3543                 /* Two or more frames were attempted; expect block-ack */
3544                 u64 bitmap = 0;
3545                 int start = agg->start_idx;
3546
3547                 /* Construct bit-map of pending frames within Tx window */
3548                 for (i = 0; i < agg->frame_count; i++) {
3549                         u16 sc;
3550                         status = le16_to_cpu(frame_status[i].status);
3551                         seq  = le16_to_cpu(frame_status[i].sequence);
3552                         idx = SEQ_TO_INDEX(seq);
3553                         txq_id = SEQ_TO_QUEUE(seq);
3554
3555                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3556                                       AGG_TX_STATE_ABORT_MSK))
3557                                 continue;
3558
3559                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3560                                            agg->frame_count, txq_id, idx);
3561
3562                         hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
3563
3564                         sc = le16_to_cpu(hdr->seq_ctrl);
3565                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3566                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
3567                                           " idx=%d, seq_idx=%d, seq=%d\n",
3568                                           idx, SEQ_TO_SN(sc),
3569                                           hdr->seq_ctrl);
3570                                 return -1;
3571                         }
3572
3573                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3574                                            i, idx, SEQ_TO_SN(sc));
3575
3576                         sh = idx - start;
3577                         if (sh > 64) {
3578                                 sh = (start - idx) + 0xff;
3579                                 bitmap = bitmap << sh;
3580                                 sh = 0;
3581                                 start = idx;
3582                         } else if (sh < -64)
3583                                 sh  = 0xff - (start - idx);
3584                         else if (sh < 0) {
3585                                 sh = start - idx;
3586                                 start = idx;
3587                                 bitmap = bitmap << sh;
3588                                 sh = 0;
3589                         }
3590                         bitmap |= (1 << sh);
3591                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3592                                            start, (u32)(bitmap & 0xFFFFFFFF));
3593                 }
3594
3595                 agg->bitmap = bitmap;
3596                 agg->start_idx = start;
3597                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3598                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3599                                    agg->frame_count, agg->start_idx,
3600                                    (unsigned long long)agg->bitmap);
3601
3602                 if (bitmap)
3603                         agg->wait_for_ba = 1;
3604         }
3605         return 0;
3606 }
3607 #endif
3608
3609 /**
3610  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3611  */
3612 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
3613                                 struct iwl_rx_mem_buffer *rxb)
3614 {
3615         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3616         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3617         int txq_id = SEQ_TO_QUEUE(sequence);
3618         int index = SEQ_TO_INDEX(sequence);
3619         struct iwl_tx_queue *txq = &priv->txq[txq_id];
3620         struct ieee80211_tx_info *info;
3621         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3622         u32  status = le32_to_cpu(tx_resp->status);
3623 #ifdef CONFIG_IWL4965_HT
3624         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3625         u16 fc;
3626         struct ieee80211_hdr *hdr;
3627         u8 *qc = NULL;
3628 #endif
3629
3630         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
3631                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3632                           "is out of range [0-%d] %d %d\n", txq_id,
3633                           index, txq->q.n_bd, txq->q.write_ptr,
3634                           txq->q.read_ptr);
3635                 return;
3636         }
3637
3638         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
3639         memset(&info->status, 0, sizeof(info->status));
3640
3641 #ifdef CONFIG_IWL4965_HT
3642         hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
3643         fc = le16_to_cpu(hdr->frame_control);
3644         if (ieee80211_is_qos_data(fc)) {
3645                 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
3646                 tid = qc[0] & 0xf;
3647         }
3648
3649         sta_id = iwl_get_ra_sta_id(priv, hdr);
3650         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3651                 IWL_ERROR("Station not known\n");
3652                 return;
3653         }
3654
3655         if (txq->sched_retry) {
3656                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3657                 struct iwl_ht_agg *agg = NULL;
3658
3659                 if (!qc)
3660                         return;
3661
3662                 agg = &priv->stations[sta_id].tid[tid].agg;
3663
3664                 iwl4965_tx_status_reply_tx(priv, agg,
3665                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3666
3667                 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) {
3668                         /* TODO: send BAR */
3669                 }
3670
3671                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3672                         int freed, ampdu_q;
3673                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3674                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3675                                            "%d index %d\n", scd_ssn , index);
3676                         freed = iwl_tx_queue_reclaim(priv, txq_id, index);
3677                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3678
3679                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
3680                             txq_id >= 0 && priv->mac80211_registered &&
3681                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
3682                                 /* calculate mac80211 ampdu sw queue to wake */
3683                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
3684                                           priv->hw->queues;
3685                                 if (agg->state == IWL_AGG_OFF)
3686                                         ieee80211_wake_queue(priv->hw, txq_id);
3687                                 else
3688                                         ieee80211_wake_queue(priv->hw, ampdu_q);
3689                         }
3690                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3691                 }
3692         } else {
3693 #endif /* CONFIG_IWL4965_HT */
3694
3695         info->status.retry_count = tx_resp->failure_frame;
3696         info->flags |= iwl_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
3697         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3698                                      info);
3699
3700         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3701                      "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
3702                      status, le32_to_cpu(tx_resp->rate_n_flags),
3703                      tx_resp->failure_frame);
3704
3705         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3706 #ifdef CONFIG_IWL4965_HT
3707         if (index != -1) {
3708                 int freed = iwl_tx_queue_reclaim(priv, txq_id, index);
3709                 if (tid != MAX_TID_COUNT)
3710                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3711                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
3712                         (txq_id >= 0) && priv->mac80211_registered)
3713                         ieee80211_wake_queue(priv->hw, txq_id);
3714                 if (tid != MAX_TID_COUNT)
3715                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3716         }
3717         }
3718 #endif /* CONFIG_IWL4965_HT */
3719
3720         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3721                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
3722 }
3723
3724
3725 /* Set up 4965-specific Rx frame reply handlers */
3726 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
3727 {
3728         /* Legacy Rx frames */
3729         priv->rx_handlers[REPLY_RX] = iwl4965_rx_reply_rx;
3730
3731         /* High-throughput (HT) Rx frames */
3732         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
3733         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
3734
3735         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3736
3737 #ifdef CONFIG_IWL4965_HT
3738         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba;
3739 #endif /* CONFIG_IWL4965_HT */
3740 }
3741
3742 void iwl4965_hw_setup_deferred_work(struct iwl_priv *priv)
3743 {
3744         INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
3745 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
3746         INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work);
3747 #endif
3748         init_timer(&priv->statistics_periodic);
3749         priv->statistics_periodic.data = (unsigned long)priv;
3750         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
3751 }
3752
3753 void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv)
3754 {
3755         del_timer_sync(&priv->statistics_periodic);
3756
3757         cancel_delayed_work(&priv->init_alive_start);
3758 }
3759
3760
3761 static struct iwl_hcmd_ops iwl4965_hcmd = {
3762         .rxon_assoc = iwl4965_send_rxon_assoc,
3763 };
3764
3765 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
3766         .get_hcmd_size = iwl4965_get_hcmd_size,
3767         .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
3768 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
3769         .chain_noise_reset = iwl4965_chain_noise_reset,
3770         .gain_computation = iwl4965_gain_computation,
3771 #endif
3772 };
3773
3774 static struct iwl_lib_ops iwl4965_lib = {
3775         .set_hw_params = iwl4965_hw_set_hw_params,
3776         .alloc_shared_mem = iwl4965_alloc_shared_mem,
3777         .free_shared_mem = iwl4965_free_shared_mem,
3778         .shared_mem_rx_idx = iwl4965_shared_mem_rx_idx,
3779         .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
3780         .txq_set_sched = iwl4965_txq_set_sched,
3781         .rx_handler_setup = iwl4965_rx_handler_setup,
3782         .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
3783         .alive_notify = iwl4965_alive_notify,
3784         .init_alive_start = iwl4965_init_alive_start,
3785         .load_ucode = iwl4965_load_bsm,
3786         .apm_ops = {
3787                 .init = iwl4965_apm_init,
3788                 .reset = iwl4965_apm_reset,
3789                 .stop = iwl4965_apm_stop,
3790                 .config = iwl4965_nic_config,
3791                 .set_pwr_src = iwl4965_set_pwr_src,
3792         },
3793         .eeprom_ops = {
3794                 .regulatory_bands = {
3795                         EEPROM_REGULATORY_BAND_1_CHANNELS,
3796                         EEPROM_REGULATORY_BAND_2_CHANNELS,
3797                         EEPROM_REGULATORY_BAND_3_CHANNELS,
3798                         EEPROM_REGULATORY_BAND_4_CHANNELS,
3799                         EEPROM_REGULATORY_BAND_5_CHANNELS,
3800                         EEPROM_4965_REGULATORY_BAND_24_FAT_CHANNELS,
3801                         EEPROM_4965_REGULATORY_BAND_52_FAT_CHANNELS
3802                 },
3803                 .verify_signature  = iwlcore_eeprom_verify_signature,
3804                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
3805                 .release_semaphore = iwlcore_eeprom_release_semaphore,
3806                 .check_version = iwl4965_eeprom_check_version,
3807                 .query_addr = iwlcore_eeprom_query_addr,
3808         },
3809         .radio_kill_sw = iwl4965_radio_kill_sw,
3810         .set_power = iwl4965_set_power,
3811         .update_chain_flags = iwl4965_update_chain_flags,
3812 };
3813
3814 static struct iwl_ops iwl4965_ops = {
3815         .lib = &iwl4965_lib,
3816         .hcmd = &iwl4965_hcmd,
3817         .utils = &iwl4965_hcmd_utils,
3818 };
3819
3820 struct iwl_cfg iwl4965_agn_cfg = {
3821         .name = "4965AGN",
3822         .fw_name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode",
3823         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
3824         .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
3825         .ops = &iwl4965_ops,
3826         .mod_params = &iwl4965_mod_params,
3827 };
3828
3829 module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444);
3830 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
3831 module_param_named(disable, iwl4965_mod_params.disable, int, 0444);
3832 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
3833 module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, 0444);
3834 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])\n");
3835 module_param_named(debug, iwl4965_mod_params.debug, int, 0444);
3836 MODULE_PARM_DESC(debug, "debug output mask");
3837 module_param_named(
3838         disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444);
3839 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
3840
3841 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444);
3842 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3843
3844 /* QoS */
3845 module_param_named(qos_enable, iwl4965_mod_params.enable_qos, int, 0444);
3846 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
3847 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444);
3848 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3849 module_param_named(fw_restart4965, iwl4965_mod_params.restart_fw, int, 0444);
3850 MODULE_PARM_DESC(fw_restart4965, "restart firmware in case of error");