SAFE public projects git trees. - safe/jmp/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         /* the rest are 0 by default */
  54 };
  55
  56 #ifdef CONFIG_IWL4965_HT
  57
  58 static const u16 default_tid_to_tx_fifo[] = {
  59         IWL_TX_FIFO_AC1,
  60         IWL_TX_FIFO_AC0,
  61         IWL_TX_FIFO_AC0,
  62         IWL_TX_FIFO_AC1,
  63         IWL_TX_FIFO_AC2,
  64         IWL_TX_FIFO_AC2,
  65         IWL_TX_FIFO_AC3,
  66         IWL_TX_FIFO_AC3,
  67         IWL_TX_FIFO_NONE,
  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_AC3
  76 };
  77
  78 #endif  /*CONFIG_IWL4965_HT */
  79
  80 /* check contents of special bootstrap uCode SRAM */
  81 static int iwl4965_verify_bsm(struct iwl_priv *priv)
  82 {
  83         __le32 *image = priv->ucode_boot.v_addr;
  84         u32 len = priv->ucode_boot.len;
  85         u32 reg;
  86         u32 val;
  87
  88         IWL_DEBUG_INFO("Begin verify bsm\n");
  89
  90         /* verify BSM SRAM contents */
  91         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
  92         for (reg = BSM_SRAM_LOWER_BOUND;
  93              reg < BSM_SRAM_LOWER_BOUND + len;
  94              reg += sizeof(u32), image++) {
  95                 val = iwl_read_prph(priv, reg);
  96                 if (val != le32_to_cpu(*image)) {
  97                         IWL_ERROR("BSM uCode verification failed at "
  98                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
  99                                   BSM_SRAM_LOWER_BOUND,
 100                                   reg - BSM_SRAM_LOWER_BOUND, len,
 101                                   val, le32_to_cpu(*image));
 102                         return -EIO;
 103                 }
 104         }
 105
 106         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
 107
 108         return 0;
 109 }
 110
 111 /**
 112  * iwl4965_load_bsm - Load bootstrap instructions
 113  *
 114  * BSM operation:
 115  *
 116  * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
 117  * in special SRAM that does not power down during RFKILL.  When powering back
 118  * up after power-saving sleeps (or during initial uCode load), the BSM loads
 119  * the bootstrap program into the on-board processor, and starts it.
 120  *
 121  * The bootstrap program loads (via DMA) instructions and data for a new
 122  * program from host DRAM locations indicated by the host driver in the
 123  * BSM_DRAM_* registers.  Once the new program is loaded, it starts
 124  * automatically.
 125  *
 126  * When initializing the NIC, the host driver points the BSM to the
 127  * "initialize" uCode image.  This uCode sets up some internal data, then
 128  * notifies host via "initialize alive" that it is complete.
 129  *
 130  * The host then replaces the BSM_DRAM_* pointer values to point to the
 131  * normal runtime uCode instructions and a backup uCode data cache buffer
 132  * (filled initially with starting data values for the on-board processor),
 133  * then triggers the "initialize" uCode to load and launch the runtime uCode,
 134  * which begins normal operation.
 135  *
 136  * When doing a power-save shutdown, runtime uCode saves data SRAM into
 137  * the backup data cache in DRAM before SRAM is powered down.
 138  *
 139  * When powering back up, the BSM loads the bootstrap program.  This reloads
 140  * the runtime uCode instructions and the backup data cache into SRAM,
 141  * and re-launches the runtime uCode from where it left off.
 142  */
 143 static int iwl4965_load_bsm(struct iwl_priv *priv)
 144 {
 145         __le32 *image = priv->ucode_boot.v_addr;
 146         u32 len = priv->ucode_boot.len;
 147         dma_addr_t pinst;
 148         dma_addr_t pdata;
 149         u32 inst_len;
 150         u32 data_len;
 151         int i;
 152         u32 done;
 153         u32 reg_offset;
 154         int ret;
 155
 156         IWL_DEBUG_INFO("Begin load bsm\n");
 157
 158         /* make sure bootstrap program is no larger than BSM's SRAM size */
 159         if (len > IWL_MAX_BSM_SIZE)
 160                 return -EINVAL;
 161
 162         /* Tell bootstrap uCode where to find the "Initialize" uCode
 163          *   in host DRAM ... host DRAM physical address bits 35:4 for 4965.
 164          * NOTE:  iwl4965_initialize_alive_start() will replace these values,
 165          *        after the "initialize" uCode has run, to point to
 166          *        runtime/protocol instructions and backup data cache. */
 167         pinst = priv->ucode_init.p_addr >> 4;
 168         pdata = priv->ucode_init_data.p_addr >> 4;
 169         inst_len = priv->ucode_init.len;
 170         data_len = priv->ucode_init_data.len;
 171
 172         ret = iwl_grab_nic_access(priv);
 173         if (ret)
 174                 return ret;
 175
 176         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 177         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 178         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
 179         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
 180
 181         /* Fill BSM memory with bootstrap instructions */
 182         for (reg_offset = BSM_SRAM_LOWER_BOUND;
 183              reg_offset < BSM_SRAM_LOWER_BOUND + len;
 184              reg_offset += sizeof(u32), image++)
 185                 _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image));
 186
 187         ret = iwl4965_verify_bsm(priv);
 188         if (ret) {
 189                 iwl_release_nic_access(priv);
 190                 return ret;
 191         }
 192
 193         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
 194         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
 195         iwl_write_prph(priv, BSM_WR_MEM_DST_REG, RTC_INST_LOWER_BOUND);
 196         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
 197
 198         /* Load bootstrap code into instruction SRAM now,
 199          *   to prepare to load "initialize" uCode */
 200         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START);
 201
 202         /* Wait for load of bootstrap uCode to finish */
 203         for (i = 0; i < 100; i++) {
 204                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
 205                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
 206                         break;
 207                 udelay(10);
 208         }
 209         if (i < 100)
 210                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
 211         else {
 212                 IWL_ERROR("BSM write did not complete!\n");
 213                 return -EIO;
 214         }
 215
 216         /* Enable future boot loads whenever power management unit triggers it
 217          *   (e.g. when powering back up after power-save shutdown) */
 218         iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN);
 219
 220         iwl_release_nic_access(priv);
 221
 222         return 0;
 223 }
 224
 225 /**
 226  * iwl4965_set_ucode_ptrs - Set uCode address location
 227  *
 228  * Tell initialization uCode where to find runtime uCode.
 229  *
 230  * BSM registers initially contain pointers to initialization uCode.
 231  * We need to replace them to load runtime uCode inst and data,
 232  * and to save runtime data when powering down.
 233  */
 234 static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv)
 235 {
 236         dma_addr_t pinst;
 237         dma_addr_t pdata;
 238         unsigned long flags;
 239         int ret = 0;
 240
 241         /* bits 35:4 for 4965 */
 242         pinst = priv->ucode_code.p_addr >> 4;
 243         pdata = priv->ucode_data_backup.p_addr >> 4;
 244
 245         spin_lock_irqsave(&priv->lock, flags);
 246         ret = iwl_grab_nic_access(priv);
 247         if (ret) {
 248                 spin_unlock_irqrestore(&priv->lock, flags);
 249                 return ret;
 250         }
 251
 252         /* Tell bootstrap uCode where to find image to load */
 253         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
 254         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
 255         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
 256                                  priv->ucode_data.len);
 257
 258         /* Inst bytecount must be last to set up, bit 31 signals uCode
 259          *   that all new ptr/size info is in place */
 260         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
 261                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
 262         iwl_release_nic_access(priv);
 263
 264         spin_unlock_irqrestore(&priv->lock, flags);
 265
 266         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
 267
 268         return ret;
 269 }
 270
 271 /**
 272  * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
 273  *
 274  * Called after REPLY_ALIVE notification received from "initialize" uCode.
 275  *
 276  * The 4965 "initialize" ALIVE reply contains calibration data for:
 277  *   Voltage, temperature, and MIMO tx gain correction, now stored in priv
 278  *   (3945 does not contain this data).
 279  *
 280  * Tell "initialize" uCode to go ahead and load the runtime uCode.
 281 */
 282 static void iwl4965_init_alive_start(struct iwl_priv *priv)
 283 {
 284         /* Check alive response for "valid" sign from uCode */
 285         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
 286                 /* We had an error bringing up the hardware, so take it
 287                  * all the way back down so we can try again */
 288                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
 289                 goto restart;
 290         }
 291
 292         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
 293          * This is a paranoid check, because we would not have gotten the
 294          * "initialize" alive if code weren't properly loaded.  */
 295         if (iwl_verify_ucode(priv)) {
 296                 /* Runtime instruction load was bad;
 297                  * take it all the way back down so we can try again */
 298                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
 299                 goto restart;
 300         }
 301
 302         /* Calculate temperature */
 303         priv->temperature = iwl4965_get_temperature(priv);
 304
 305         /* Send pointers to protocol/runtime uCode image ... init code will
 306          * load and launch runtime uCode, which will send us another "Alive"
 307          * notification. */
 308         IWL_DEBUG_INFO("Initialization Alive received.\n");
 309         if (iwl4965_set_ucode_ptrs(priv)) {
 310                 /* Runtime instruction load won't happen;
 311                  * take it all the way back down so we can try again */
 312                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
 313                 goto restart;
 314         }
 315         return;
 316
 317 restart:
 318         queue_work(priv->workqueue, &priv->restart);
 319 }
 320
 321 static int is_fat_channel(__le32 rxon_flags)
 322 {
 323         return (rxon_flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) ||
 324                 (rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK);
 325 }
 326
 327 int iwl4965_hwrate_to_plcp_idx(u32 rate_n_flags)
 328 {
 329         int idx = 0;
 330
 331         /* 4965 HT rate format */
 332         if (rate_n_flags & RATE_MCS_HT_MSK) {
 333                 idx = (rate_n_flags & 0xff);
 334
 335                 if (idx >= IWL_RATE_MIMO2_6M_PLCP)
 336                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
 337
 338                 idx += IWL_FIRST_OFDM_RATE;
 339                 /* skip 9M not supported in ht*/
 340                 if (idx >= IWL_RATE_9M_INDEX)
 341                         idx += 1;
 342                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
 343                         return idx;
 344
 345         /* 4965 legacy rate format, search for match in table */
 346         } else {
 347                 for (idx = 0; idx < ARRAY_SIZE(iwl4965_rates); idx++)
 348                         if (iwl4965_rates[idx].plcp == (rate_n_flags & 0xFF))
 349                                 return idx;
 350         }
 351
 352         return -1;
 353 }
 354
 355 /**
 356  * translate ucode response to mac80211 tx status control values
 357  */
 358 void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 359                                   struct ieee80211_tx_control *control)
 360 {
 361         int rate_index;
 362
 363         control->antenna_sel_tx =
 364                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
 365         if (rate_n_flags & RATE_MCS_HT_MSK)
 366                 control->flags |= IEEE80211_TXCTL_OFDM_HT;
 367         if (rate_n_flags & RATE_MCS_GF_MSK)
 368                 control->flags |= IEEE80211_TXCTL_GREEN_FIELD;
 369         if (rate_n_flags & RATE_MCS_FAT_MSK)
 370                 control->flags |= IEEE80211_TXCTL_40_MHZ_WIDTH;
 371         if (rate_n_flags & RATE_MCS_DUP_MSK)
 372                 control->flags |= IEEE80211_TXCTL_DUP_DATA;
 373         if (rate_n_flags & RATE_MCS_SGI_MSK)
 374                 control->flags |= IEEE80211_TXCTL_SHORT_GI;
 375         /* since iwl4965_hwrate_to_plcp_idx is band indifferent, we always use
 376          * IEEE80211_BAND_2GHZ band as it contains all the rates */
 377         rate_index = iwl4965_hwrate_to_plcp_idx(rate_n_flags);
 378         if (rate_index == -1)
 379                 control->tx_rate = NULL;
 380         else
 381                 control->tx_rate =
 382                         &priv->bands[IEEE80211_BAND_2GHZ].bitrates[rate_index];
 383 }
 384
 385 int iwl4965_hw_rxq_stop(struct iwl_priv *priv)
 386 {
 387         int rc;
 388         unsigned long flags;
 389
 390         spin_lock_irqsave(&priv->lock, flags);
 391         rc = iwl_grab_nic_access(priv);
 392         if (rc) {
 393                 spin_unlock_irqrestore(&priv->lock, flags);
 394                 return rc;
 395         }
 396
 397         /* stop Rx DMA */
 398         iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
 399         rc = iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
 400                                      (1 << 24), 1000);
 401         if (rc < 0)
 402                 IWL_ERROR("Can't stop Rx DMA.\n");
 403
 404         iwl_release_nic_access(priv);
 405         spin_unlock_irqrestore(&priv->lock, flags);
 406
 407         return 0;
 408 }
 409
 410 /*
 411  * EEPROM handlers
 412  */
 413
 414 static int iwl4965_eeprom_check_version(struct iwl_priv *priv)
 415 {
 416         u16 eeprom_ver;
 417         u16 calib_ver;
 418
 419         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
 420
 421         calib_ver = iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET);
 422
 423         if (eeprom_ver < EEPROM_4965_EEPROM_VERSION ||
 424             calib_ver < EEPROM_4965_TX_POWER_VERSION)
 425                 goto err;
 426
 427         return 0;
 428 err:
 429         IWL_ERROR("Unsuported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
 430                   eeprom_ver, EEPROM_4965_EEPROM_VERSION,
 431                   calib_ver, EEPROM_4965_TX_POWER_VERSION);
 432         return -EINVAL;
 433
 434 }
 435 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 436 {
 437         int ret;
 438         unsigned long flags;
 439
 440         spin_lock_irqsave(&priv->lock, flags);
 441         ret = iwl_grab_nic_access(priv);
 442         if (ret) {
 443                 spin_unlock_irqrestore(&priv->lock, flags);
 444                 return ret;
 445         }
 446
 447         if (src == IWL_PWR_SRC_VAUX) {
 448                 u32 val;
 449                 ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
 450                                             &val);
 451
 452                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) {
 453                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 454                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 455                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
 456                 }
 457         } else {
 458                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 459                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 460                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
 461         }
 462
 463         iwl_release_nic_access(priv);
 464         spin_unlock_irqrestore(&priv->lock, flags);
 465
 466         return ret;
 467 }
 468
 469 static int iwl4965_disable_tx_fifo(struct iwl_priv *priv)
 470 {
 471         unsigned long flags;
 472         int ret;
 473
 474         spin_lock_irqsave(&priv->lock, flags);
 475
 476         ret = iwl_grab_nic_access(priv);
 477         if (unlikely(ret)) {
 478                 IWL_ERROR("Tx fifo reset failed");
 479                 spin_unlock_irqrestore(&priv->lock, flags);
 480                 return ret;
 481         }
 482
 483         iwl_write_prph(priv, IWL49_SCD_TXFACT, 0);
 484         iwl_release_nic_access(priv);
 485         spin_unlock_irqrestore(&priv->lock, flags);
 486
 487         return 0;
 488 }
 489
 490 static int iwl4965_apm_init(struct iwl_priv *priv)
 491 {
 492         unsigned long flags;
 493         int ret = 0;
 494
 495         spin_lock_irqsave(&priv->lock, flags);
 496         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 497                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
 498
 499         /* set "initialization complete" bit to move adapter
 500          * D0U* --> D0A* state */
 501         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 502
 503         /* wait for clock stabilization */
 504         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
 505                            CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 506                            CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 507         if (ret < 0) {
 508                 IWL_DEBUG_INFO("Failed to init the card\n");
 509                 goto out;
 510         }
 511
 512         ret = iwl_grab_nic_access(priv);
 513         if (ret)
 514                 goto out;
 515
 516         /* enable DMA */
 517         iwl_write_prph(priv, APMG_CLK_CTRL_REG,
 518                         APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
 519
 520         udelay(20);
 521
 522         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 523                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 524
 525         iwl_release_nic_access(priv);
 526 out:
 527         spin_unlock_irqrestore(&priv->lock, flags);
 528         return ret;
 529 }
 530
 531
 532 static void iwl4965_nic_config(struct iwl_priv *priv)
 533 {
 534         unsigned long flags;
 535         u32 val;
 536         u16 radio_cfg;
 537         u8 val_link;
 538
 539         spin_lock_irqsave(&priv->lock, flags);
 540
 541         if ((priv->rev_id & 0x80) == 0x80 && (priv->rev_id & 0x7f) < 8) {
 542                 pci_read_config_dword(priv->pci_dev, PCI_REG_WUM8, &val);
 543                 /* Enable No Snoop field */
 544                 pci_write_config_dword(priv->pci_dev, PCI_REG_WUM8,
 545                                        val & ~(1 << 11));
 546         }
 547
 548         pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link);
 549
 550         /* disable L1 entry -- workaround for pre-B1 */
 551         pci_write_config_byte(priv->pci_dev, PCI_LINK_CTRL, val_link & ~0x02);
 552
 553         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 554
 555         /* write radio config values to register */
 556         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX)
 557                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 558                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 559                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 560                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 561
 562         /* set CSR_HW_CONFIG_REG for uCode use */
 563         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 564                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 565                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 566
 567         priv->calib_info = (struct iwl_eeprom_calib_info *)
 568                 iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET);
 569
 570         spin_unlock_irqrestore(&priv->lock, flags);
 571 }
 572
 573 int iwl4965_hw_nic_stop_master(struct iwl_priv *priv)
 574 {
 575         int rc = 0;
 576         u32 reg_val;
 577         unsigned long flags;
 578
 579         spin_lock_irqsave(&priv->lock, flags);
 580
 581         /* set stop master bit */
 582         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
 583
 584         reg_val = iwl_read32(priv, CSR_GP_CNTRL);
 585
 586         if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE ==
 587             (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE))
 588                 IWL_DEBUG_INFO("Card in power save, master is already "
 589                                "stopped\n");
 590         else {
 591                 rc = iwl_poll_bit(priv, CSR_RESET,
 592                                   CSR_RESET_REG_FLAG_MASTER_DISABLED,
 593                                   CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
 594                 if (rc < 0) {
 595                         spin_unlock_irqrestore(&priv->lock, flags);
 596                         return rc;
 597                 }
 598         }
 599
 600         spin_unlock_irqrestore(&priv->lock, flags);
 601         IWL_DEBUG_INFO("stop master\n");
 602
 603         return rc;
 604 }
 605
 606 /**
 607  * iwl4965_hw_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory
 608  */
 609 void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv)
 610 {
 611
 612         int txq_id;
 613         unsigned long flags;
 614
 615         /* Stop each Tx DMA channel, and wait for it to be idle */
 616         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
 617                 spin_lock_irqsave(&priv->lock, flags);
 618                 if (iwl_grab_nic_access(priv)) {
 619                         spin_unlock_irqrestore(&priv->lock, flags);
 620                         continue;
 621                 }
 622
 623                 iwl_write_direct32(priv,
 624                                    FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), 0x0);
 625                 iwl_poll_direct_bit(priv, FH_TSSR_TX_STATUS_REG,
 626                                     FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
 627                                     (txq_id), 200);
 628                 iwl_release_nic_access(priv);
 629                 spin_unlock_irqrestore(&priv->lock, flags);
 630         }
 631
 632         /* Deallocate memory for all Tx queues */
 633         iwl_hw_txq_ctx_free(priv);
 634 }
 635
 636 int iwl4965_hw_nic_reset(struct iwl_priv *priv)
 637 {
 638         int rc = 0;
 639         unsigned long flags;
 640
 641         iwl4965_hw_nic_stop_master(priv);
 642
 643         spin_lock_irqsave(&priv->lock, flags);
 644
 645         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 646
 647         udelay(10);
 648
 649         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 650         rc = iwl_poll_bit(priv, CSR_RESET,
 651                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 652                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
 653
 654         udelay(10);
 655
 656         rc = iwl_grab_nic_access(priv);
 657         if (!rc) {
 658                 iwl_write_prph(priv, APMG_CLK_EN_REG,
 659                                 APMG_CLK_VAL_DMA_CLK_RQT |
 660                                 APMG_CLK_VAL_BSM_CLK_RQT);
 661
 662                 udelay(10);
 663
 664                 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 665                                         APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 666
 667                 iwl_release_nic_access(priv);
 668         }
 669
 670         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
 671         wake_up_interruptible(&priv->wait_command_queue);
 672
 673         spin_unlock_irqrestore(&priv->lock, flags);
 674
 675         return rc;
 676
 677 }
 678
 679 #define REG_RECALIB_PERIOD (60)
 680
 681 /**
 682  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
 683  *
 684  * This callback is provided in order to send a statistics request.
 685  *
 686  * This timer function is continually reset to execute within
 687  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 688  * was received.  We need to ensure we receive the statistics in order
 689  * to update the temperature used for calibrating the TXPOWER.
 690  */
 691 static void iwl4965_bg_statistics_periodic(unsigned long data)
 692 {
 693         struct iwl_priv *priv = (struct iwl_priv *)data;
 694
 695         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 696                 return;
 697
 698         iwl_send_statistics_request(priv, CMD_ASYNC);
 699 }
 700
 701 void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
 702 {
 703         struct iwl4965_ct_kill_config cmd;
 704         unsigned long flags;
 705         int ret = 0;
 706
 707         spin_lock_irqsave(&priv->lock, flags);
 708         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 709                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 710         spin_unlock_irqrestore(&priv->lock, flags);
 711
 712         cmd.critical_temperature_R =
 713                 cpu_to_le32(priv->hw_params.ct_kill_threshold);
 714
 715         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
 716                                sizeof(cmd), &cmd);
 717         if (ret)
 718                 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
 719         else
 720                 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
 721                         "critical temperature is %d\n",
 722                         cmd.critical_temperature_R);
 723 }
 724
 725 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
 726
 727 /* Reset differential Rx gains in NIC to prepare for chain noise calibration.
 728  * Called after every association, but this runs only once!
 729  *  ... once chain noise is calibrated the first time, it's good forever.  */
 730 static void iwl4965_chain_noise_reset(struct iwl_priv *priv)
 731 {
 732         struct iwl_chain_noise_data *data = &(priv->chain_noise_data);
 733
 734         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 735                 struct iwl4965_calibration_cmd cmd;
 736
 737                 memset(&cmd, 0, sizeof(cmd));
 738                 cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
 739                 cmd.diff_gain_a = 0;
 740                 cmd.diff_gain_b = 0;
 741                 cmd.diff_gain_c = 0;
 742                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 743                                  sizeof(cmd), &cmd))
 744                         IWL_ERROR("Could not send REPLY_PHY_CALIBRATION_CMD\n");
 745                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 746                 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
 747         }
 748 }
 749
 750 static void iwl4965_gain_computation(struct iwl_priv *priv,
 751                 u32 *average_noise,
 752                 u16 min_average_noise_antenna_i,
 753                 u32 min_average_noise)
 754 {
 755         int i, ret;
 756         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 757
 758         data->delta_gain_code[min_average_noise_antenna_i] = 0;
 759
 760         for (i = 0; i < NUM_RX_CHAINS; i++) {
 761                 s32 delta_g = 0;
 762
 763                 if (!(data->disconn_array[i]) &&
 764                     (data->delta_gain_code[i] ==
 765                              CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
 766                         delta_g = average_noise[i] - min_average_noise;
 767                         data->delta_gain_code[i] = (u8)((delta_g * 10) / 15);
 768                         data->delta_gain_code[i] =
 769                                 min(data->delta_gain_code[i],
 770                                 (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 771
 772                         data->delta_gain_code[i] =
 773                                 (data->delta_gain_code[i] | (1 << 2));
 774                 } else {
 775                         data->delta_gain_code[i] = 0;
 776                 }
 777         }
 778         IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
 779                      data->delta_gain_code[0],
 780                      data->delta_gain_code[1],
 781                      data->delta_gain_code[2]);
 782
 783         /* Differential gain gets sent to uCode only once */
 784         if (!data->radio_write) {
 785                 struct iwl4965_calibration_cmd cmd;
 786                 data->radio_write = 1;
 787
 788                 memset(&cmd, 0, sizeof(cmd));
 789                 cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
 790                 cmd.diff_gain_a = data->delta_gain_code[0];
 791                 cmd.diff_gain_b = data->delta_gain_code[1];
 792                 cmd.diff_gain_c = data->delta_gain_code[2];
 793                 ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 794                                       sizeof(cmd), &cmd);
 795                 if (ret)
 796                         IWL_DEBUG_CALIB("fail sending cmd "
 797                                      "REPLY_PHY_CALIBRATION_CMD \n");
 798
 799                 /* TODO we might want recalculate
 800                  * rx_chain in rxon cmd */
 801
 802                 /* Mark so we run this algo only once! */
 803                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 804         }
 805         data->chain_noise_a = 0;
 806         data->chain_noise_b = 0;
 807         data->chain_noise_c = 0;
 808         data->chain_signal_a = 0;
 809         data->chain_signal_b = 0;
 810         data->chain_signal_c = 0;
 811         data->beacon_count = 0;
 812 }
 813
 814 static void iwl4965_bg_sensitivity_work(struct work_struct *work)
 815 {
 816         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 817                         sensitivity_work);
 818
 819         mutex_lock(&priv->mutex);
 820
 821         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 822             test_bit(STATUS_SCANNING, &priv->status)) {
 823                 mutex_unlock(&priv->mutex);
 824                 return;
 825         }
 826
 827         if (priv->start_calib) {
 828                 iwl_chain_noise_calibration(priv, &priv->statistics);
 829
 830                 iwl_sensitivity_calibration(priv, &priv->statistics);
 831         }
 832
 833         mutex_unlock(&priv->mutex);
 834         return;
 835 }
 836 #endif /*CONFIG_IWL4965_RUN_TIME_CALIB*/
 837
 838 static void iwl4965_bg_txpower_work(struct work_struct *work)
 839 {
 840         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 841                         txpower_work);
 842
 843         /* If a scan happened to start before we got here
 844          * then just return; the statistics notification will
 845          * kick off another scheduled work to compensate for
 846          * any temperature delta we missed here. */
 847         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 848             test_bit(STATUS_SCANNING, &priv->status))
 849                 return;
 850
 851         mutex_lock(&priv->mutex);
 852
 853         /* Regardless of if we are assocaited, we must reconfigure the
 854          * TX power since frames can be sent on non-radar channels while
 855          * not associated */
 856         iwl4965_hw_reg_send_txpower(priv);
 857
 858         /* Update last_temperature to keep is_calib_needed from running
 859          * when it isn't needed... */
 860         priv->last_temperature = priv->temperature;
 861
 862         mutex_unlock(&priv->mutex);
 863 }
 864
 865 /*
 866  * Acquire priv->lock before calling this function !
 867  */
 868 static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
 869 {
 870         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
 871                              (index & 0xff) | (txq_id << 8));
 872         iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index);
 873 }
 874
 875 /**
 876  * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
 877  * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
 878  * @scd_retry: (1) Indicates queue will be used in aggregation mode
 879  *
 880  * NOTE:  Acquire priv->lock before calling this function !
 881  */
 882 static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
 883                                         struct iwl_tx_queue *txq,
 884                                         int tx_fifo_id, int scd_retry)
 885 {
 886         int txq_id = txq->q.id;
 887
 888         /* Find out whether to activate Tx queue */
 889         int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0;
 890
 891         /* Set up and activate */
 892         iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
 893                          (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
 894                          (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) |
 895                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) |
 896                          (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
 897                          IWL49_SCD_QUEUE_STTS_REG_MSK);
 898
 899         txq->sched_retry = scd_retry;
 900
 901         IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
 902                        active ? "Activate" : "Deactivate",
 903                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
 904 }
 905
 906 static const u16 default_queue_to_tx_fifo[] = {
 907         IWL_TX_FIFO_AC3,
 908         IWL_TX_FIFO_AC2,
 909         IWL_TX_FIFO_AC1,
 910         IWL_TX_FIFO_AC0,
 911         IWL49_CMD_FIFO_NUM,
 912         IWL_TX_FIFO_HCCA_1,
 913         IWL_TX_FIFO_HCCA_2
 914 };
 915
 916 static inline void iwl4965_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
 917 {
 918         set_bit(txq_id, &priv->txq_ctx_active_msk);
 919 }
 920
 921 static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
 922 {
 923         clear_bit(txq_id, &priv->txq_ctx_active_msk);
 924 }
 925
 926 int iwl4965_alive_notify(struct iwl_priv *priv)
 927 {
 928         u32 a;
 929         int i = 0;
 930         unsigned long flags;
 931         int ret;
 932
 933         spin_lock_irqsave(&priv->lock, flags);
 934
 935 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
 936         memset(&(priv->sensitivity_data), 0,
 937                sizeof(struct iwl_sensitivity_data));
 938         memset(&(priv->chain_noise_data), 0,
 939                sizeof(struct iwl_chain_noise_data));
 940         for (i = 0; i < NUM_RX_CHAINS; i++)
 941                 priv->chain_noise_data.delta_gain_code[i] =
 942                                 CHAIN_NOISE_DELTA_GAIN_INIT_VAL;
 943 #endif /* CONFIG_IWL4965_RUN_TIME_CALIB*/
 944         ret = iwl_grab_nic_access(priv);
 945         if (ret) {
 946                 spin_unlock_irqrestore(&priv->lock, flags);
 947                 return ret;
 948         }
 949
 950         /* Clear 4965's internal Tx Scheduler data base */
 951         priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR);
 952         a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET;
 953         for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4)
 954                 iwl_write_targ_mem(priv, a, 0);
 955         for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4)
 956                 iwl_write_targ_mem(priv, a, 0);
 957         for (; a < sizeof(u16) * priv->hw_params.max_txq_num; a += 4)
 958                 iwl_write_targ_mem(priv, a, 0);
 959
 960         /* Tel 4965 where to find Tx byte count tables */
 961         iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
 962                 (priv->shared_phys +
 963                  offsetof(struct iwl4965_shared, queues_byte_cnt_tbls)) >> 10);
 964
 965         /* Disable chain mode for all queues */
 966         iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
 967
 968         /* Initialize each Tx queue (including the command queue) */
 969         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
 970
 971                 /* TFD circular buffer read/write indexes */
 972                 iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0);
 973                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
 974
 975                 /* Max Tx Window size for Scheduler-ACK mode */
 976                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 977                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i),
 978                                 (SCD_WIN_SIZE <<
 979                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
 980                                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
 981
 982                 /* Frame limit */
 983                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 984                                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) +
 985                                 sizeof(u32),
 986                                 (SCD_FRAME_LIMIT <<
 987                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 988                                 IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
 989
 990         }
 991         iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK,
 992                                  (1 << priv->hw_params.max_txq_num) - 1);
 993
 994         /* Activate all Tx DMA/FIFO channels */
 995         iwl_write_prph(priv, IWL49_SCD_TXFACT,
 996                                  SCD_TXFACT_REG_TXFIFO_MASK(0, 7));
 997
 998         iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 999
1000         /* Map each Tx/cmd queue to its corresponding fifo */
1001         for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
1002                 int ac = default_queue_to_tx_fifo[i];
1003                 iwl4965_txq_ctx_activate(priv, i);
1004                 iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
1005         }
1006
1007         iwl_release_nic_access(priv);
1008         spin_unlock_irqrestore(&priv->lock, flags);
1009
1010         /* Ask for statistics now, the uCode will send statistics notification
1011          * periodically after association */
1012         iwl_send_statistics_request(priv, CMD_ASYNC);
1013         return ret;
1014 }
1015
1016 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
1017 static struct iwl_sensitivity_ranges iwl4965_sensitivity = {
1018         .min_nrg_cck = 97,
1019         .max_nrg_cck = 0,
1020
1021         .auto_corr_min_ofdm = 85,
1022         .auto_corr_min_ofdm_mrc = 170,
1023         .auto_corr_min_ofdm_x1 = 105,
1024         .auto_corr_min_ofdm_mrc_x1 = 220,
1025
1026         .auto_corr_max_ofdm = 120,
1027         .auto_corr_max_ofdm_mrc = 210,
1028         .auto_corr_max_ofdm_x1 = 140,
1029         .auto_corr_max_ofdm_mrc_x1 = 270,
1030
1031         .auto_corr_min_cck = 125,
1032         .auto_corr_max_cck = 200,
1033         .auto_corr_min_cck_mrc = 200,
1034         .auto_corr_max_cck_mrc = 400,
1035
1036         .nrg_th_cck = 100,
1037         .nrg_th_ofdm = 100,
1038 };
1039 #endif
1040
1041 /**
1042  * iwl4965_hw_set_hw_params
1043  *
1044  * Called when initializing driver
1045  */
1046 int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
1047 {
1048
1049         if ((priv->cfg->mod_params->num_of_queues > IWL49_NUM_QUEUES) ||
1050             (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) {
1051                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
1052                           IWL_MIN_NUM_QUEUES, IWL49_NUM_QUEUES);
1053                 return -EINVAL;
1054         }
1055
1056         priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
1057         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
1058         priv->hw_params.tx_cmd_len = sizeof(struct iwl4965_tx_cmd);
1059         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1060         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1061         if (priv->cfg->mod_params->amsdu_size_8K)
1062                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1063         else
1064                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1065         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1066         priv->hw_params.max_stations = IWL4965_STATION_COUNT;
1067         priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
1068
1069         priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
1070         priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE;
1071         priv->hw_params.max_bsm_size = BSM_SRAM_SIZE;
1072         priv->hw_params.fat_channel = BIT(IEEE80211_BAND_5GHZ);
1073
1074         priv->hw_params.tx_chains_num = 2;
1075         priv->hw_params.rx_chains_num = 2;
1076         priv->hw_params.valid_tx_ant = ANT_A | ANT_B;
1077         priv->hw_params.valid_rx_ant = ANT_A | ANT_B;
1078         priv->hw_params.ct_kill_threshold = CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD);
1079
1080 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
1081         priv->hw_params.sens = &iwl4965_sensitivity;
1082 #endif
1083
1084         return 0;
1085 }
1086
1087 /* set card power command */
1088 static int iwl4965_set_power(struct iwl_priv *priv,
1089                       void *cmd)
1090 {
1091         int ret = 0;
1092
1093         ret = iwl_send_cmd_pdu_async(priv, POWER_TABLE_CMD,
1094                                     sizeof(struct iwl4965_powertable_cmd),
1095                                     cmd, NULL);
1096         return ret;
1097 }
1098 int iwl4965_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1099 {
1100         IWL_ERROR("TODO: Implement iwl4965_hw_reg_set_txpower!\n");
1101         return -EINVAL;
1102 }
1103
1104 static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
1105 {
1106         s32 sign = 1;
1107
1108         if (num < 0) {
1109                 sign = -sign;
1110                 num = -num;
1111         }
1112         if (denom < 0) {
1113                 sign = -sign;
1114                 denom = -denom;
1115         }
1116         *res = 1;
1117         *res = ((num * 2 + denom) / (denom * 2)) * sign;
1118
1119         return 1;
1120 }
1121
1122 /**
1123  * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower
1124  *
1125  * Determines power supply voltage compensation for txpower calculations.
1126  * Returns number of 1/2-dB steps to subtract from gain table index,
1127  * to compensate for difference between power supply voltage during
1128  * factory measurements, vs. current power supply voltage.
1129  *
1130  * Voltage indication is higher for lower voltage.
1131  * Lower voltage requires more gain (lower gain table index).
1132  */
1133 static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
1134                                             s32 current_voltage)
1135 {
1136         s32 comp = 0;
1137
1138         if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
1139             (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
1140                 return 0;
1141
1142         iwl4965_math_div_round(current_voltage - eeprom_voltage,
1143                                TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
1144
1145         if (current_voltage > eeprom_voltage)
1146                 comp *= 2;
1147         if ((comp < -2) || (comp > 2))
1148                 comp = 0;
1149
1150         return comp;
1151 }
1152
1153 static const struct iwl_channel_info *
1154 iwl4965_get_channel_txpower_info(struct iwl_priv *priv,
1155                                  enum ieee80211_band band, u16 channel)
1156 {
1157         const struct iwl_channel_info *ch_info;
1158
1159         ch_info = iwl_get_channel_info(priv, band, channel);
1160
1161         if (!is_channel_valid(ch_info))
1162                 return NULL;
1163
1164         return ch_info;
1165 }
1166
1167 static s32 iwl4965_get_tx_atten_grp(u16 channel)
1168 {
1169         if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
1170             channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
1171                 return CALIB_CH_GROUP_5;
1172
1173         if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
1174             channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
1175                 return CALIB_CH_GROUP_1;
1176
1177         if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
1178             channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
1179                 return CALIB_CH_GROUP_2;
1180
1181         if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
1182             channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
1183                 return CALIB_CH_GROUP_3;
1184
1185         if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
1186             channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
1187                 return CALIB_CH_GROUP_4;
1188
1189         IWL_ERROR("Can't find txatten group for channel %d.\n", channel);
1190         return -1;
1191 }
1192
1193 static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
1194 {
1195         s32 b = -1;
1196
1197         for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
1198                 if (priv->calib_info->band_info[b].ch_from == 0)
1199                         continue;
1200
1201                 if ((channel >= priv->calib_info->band_info[b].ch_from)
1202                     && (channel <= priv->calib_info->band_info[b].ch_to))
1203                         break;
1204         }
1205
1206         return b;
1207 }
1208
1209 static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
1210 {
1211         s32 val;
1212
1213         if (x2 == x1)
1214                 return y1;
1215         else {
1216                 iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
1217                 return val + y2;
1218         }
1219 }
1220
1221 /**
1222  * iwl4965_interpolate_chan - Interpolate factory measurements for one channel
1223  *
1224  * Interpolates factory measurements from the two sample channels within a
1225  * sub-band, to apply to channel of interest.  Interpolation is proportional to
1226  * differences in channel frequencies, which is proportional to differences
1227  * in channel number.
1228  */
1229 static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
1230                                     struct iwl_eeprom_calib_ch_info *chan_info)
1231 {
1232         s32 s = -1;
1233         u32 c;
1234         u32 m;
1235         const struct iwl_eeprom_calib_measure *m1;
1236         const struct iwl_eeprom_calib_measure *m2;
1237         struct iwl_eeprom_calib_measure *omeas;
1238         u32 ch_i1;
1239         u32 ch_i2;
1240
1241         s = iwl4965_get_sub_band(priv, channel);
1242         if (s >= EEPROM_TX_POWER_BANDS) {
1243                 IWL_ERROR("Tx Power can not find channel %d ", channel);
1244                 return -1;
1245         }
1246
1247         ch_i1 = priv->calib_info->band_info[s].ch1.ch_num;
1248         ch_i2 = priv->calib_info->band_info[s].ch2.ch_num;
1249         chan_info->ch_num = (u8) channel;
1250
1251         IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n",
1252                           channel, s, ch_i1, ch_i2);
1253
1254         for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
1255                 for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
1256                         m1 = &(priv->calib_info->band_info[s].ch1.
1257                                measurements[c][m]);
1258                         m2 = &(priv->calib_info->band_info[s].ch2.
1259                                measurements[c][m]);
1260                         omeas = &(chan_info->measurements[c][m]);
1261
1262                         omeas->actual_pow =
1263                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1264                                                            m1->actual_pow,
1265                                                            ch_i2,
1266                                                            m2->actual_pow);
1267                         omeas->gain_idx =
1268                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1269                                                            m1->gain_idx, ch_i2,
1270                                                            m2->gain_idx);
1271                         omeas->temperature =
1272                             (u8) iwl4965_interpolate_value(channel, ch_i1,
1273                                                            m1->temperature,
1274                                                            ch_i2,
1275                                                            m2->temperature);
1276                         omeas->pa_det =
1277                             (s8) iwl4965_interpolate_value(channel, ch_i1,
1278                                                            m1->pa_det, ch_i2,
1279                                                            m2->pa_det);
1280
1281                         IWL_DEBUG_TXPOWER
1282                             ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
1283                              m1->actual_pow, m2->actual_pow, omeas->actual_pow);
1284                         IWL_DEBUG_TXPOWER
1285                             ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
1286                              m1->gain_idx, m2->gain_idx, omeas->gain_idx);
1287                         IWL_DEBUG_TXPOWER
1288                             ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
1289                              m1->pa_det, m2->pa_det, omeas->pa_det);
1290                         IWL_DEBUG_TXPOWER
1291                             ("chain %d meas %d  T1=%d  T2=%d  T=%d\n", c, m,
1292                              m1->temperature, m2->temperature,
1293                              omeas->temperature);
1294                 }
1295         }
1296
1297         return 0;
1298 }
1299
1300 /* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
1301  * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
1302 static s32 back_off_table[] = {
1303         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
1304         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
1305         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
1306         10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
1307         10                      /* CCK */
1308 };
1309
1310 /* Thermal compensation values for txpower for various frequency ranges ...
1311  *   ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
1312 static struct iwl4965_txpower_comp_entry {
1313         s32 degrees_per_05db_a;
1314         s32 degrees_per_05db_a_denom;
1315 } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
1316         {9, 2},                 /* group 0 5.2, ch  34-43 */
1317         {4, 1},                 /* group 1 5.2, ch  44-70 */
1318         {4, 1},                 /* group 2 5.2, ch  71-124 */
1319         {4, 1},                 /* group 3 5.2, ch 125-200 */
1320         {3, 1}                  /* group 4 2.4, ch   all */
1321 };
1322
1323 static s32 get_min_power_index(s32 rate_power_index, u32 band)
1324 {
1325         if (!band) {
1326                 if ((rate_power_index & 7) <= 4)
1327                         return MIN_TX_GAIN_INDEX_52GHZ_EXT;
1328         }
1329         return MIN_TX_GAIN_INDEX;
1330 }
1331
1332 struct gain_entry {
1333         u8 dsp;
1334         u8 radio;
1335 };
1336
1337 static const struct gain_entry gain_table[2][108] = {
1338         /* 5.2GHz power gain index table */
1339         {
1340          {123, 0x3F},           /* highest txpower */
1341          {117, 0x3F},
1342          {110, 0x3F},
1343          {104, 0x3F},
1344          {98, 0x3F},
1345          {110, 0x3E},
1346          {104, 0x3E},
1347          {98, 0x3E},
1348          {110, 0x3D},
1349          {104, 0x3D},
1350          {98, 0x3D},
1351          {110, 0x3C},
1352          {104, 0x3C},
1353          {98, 0x3C},
1354          {110, 0x3B},
1355          {104, 0x3B},
1356          {98, 0x3B},
1357          {110, 0x3A},
1358          {104, 0x3A},
1359          {98, 0x3A},
1360          {110, 0x39},
1361          {104, 0x39},
1362          {98, 0x39},
1363          {110, 0x38},
1364          {104, 0x38},
1365          {98, 0x38},
1366          {110, 0x37},
1367          {104, 0x37},
1368          {98, 0x37},
1369          {110, 0x36},
1370          {104, 0x36},
1371          {98, 0x36},
1372          {110, 0x35},
1373          {104, 0x35},
1374          {98, 0x35},
1375          {110, 0x34},
1376          {104, 0x34},
1377          {98, 0x34},
1378          {110, 0x33},
1379          {104, 0x33},
1380          {98, 0x33},
1381          {110, 0x32},
1382          {104, 0x32},
1383          {98, 0x32},
1384          {110, 0x31},
1385          {104, 0x31},
1386          {98, 0x31},
1387          {110, 0x30},
1388          {104, 0x30},
1389          {98, 0x30},
1390          {110, 0x25},
1391          {104, 0x25},
1392          {98, 0x25},
1393          {110, 0x24},
1394          {104, 0x24},
1395          {98, 0x24},
1396          {110, 0x23},
1397          {104, 0x23},
1398          {98, 0x23},
1399          {110, 0x22},
1400          {104, 0x18},
1401          {98, 0x18},
1402          {110, 0x17},
1403          {104, 0x17},
1404          {98, 0x17},
1405          {110, 0x16},
1406          {104, 0x16},
1407          {98, 0x16},
1408          {110, 0x15},
1409          {104, 0x15},
1410          {98, 0x15},
1411          {110, 0x14},
1412          {104, 0x14},
1413          {98, 0x14},
1414          {110, 0x13},
1415          {104, 0x13},
1416          {98, 0x13},
1417          {110, 0x12},
1418          {104, 0x08},
1419          {98, 0x08},
1420          {110, 0x07},
1421          {104, 0x07},
1422          {98, 0x07},
1423          {110, 0x06},
1424          {104, 0x06},
1425          {98, 0x06},
1426          {110, 0x05},
1427          {104, 0x05},
1428          {98, 0x05},
1429          {110, 0x04},
1430          {104, 0x04},
1431          {98, 0x04},
1432          {110, 0x03},
1433          {104, 0x03},
1434          {98, 0x03},
1435          {110, 0x02},
1436          {104, 0x02},
1437          {98, 0x02},
1438          {110, 0x01},
1439          {104, 0x01},
1440          {98, 0x01},
1441          {110, 0x00},
1442          {104, 0x00},
1443          {98, 0x00},
1444          {93, 0x00},
1445          {88, 0x00},
1446          {83, 0x00},
1447          {78, 0x00},
1448          },
1449         /* 2.4GHz power gain index table */
1450         {
1451          {110, 0x3f},           /* highest txpower */
1452          {104, 0x3f},
1453          {98, 0x3f},
1454          {110, 0x3e},
1455          {104, 0x3e},
1456          {98, 0x3e},
1457          {110, 0x3d},
1458          {104, 0x3d},
1459          {98, 0x3d},
1460          {110, 0x3c},
1461          {104, 0x3c},
1462          {98, 0x3c},
1463          {110, 0x3b},
1464          {104, 0x3b},
1465          {98, 0x3b},
1466          {110, 0x3a},
1467          {104, 0x3a},
1468          {98, 0x3a},
1469          {110, 0x39},
1470          {104, 0x39},
1471          {98, 0x39},
1472          {110, 0x38},
1473          {104, 0x38},
1474          {98, 0x38},
1475          {110, 0x37},
1476          {104, 0x37},
1477          {98, 0x37},
1478          {110, 0x36},
1479          {104, 0x36},
1480          {98, 0x36},
1481          {110, 0x35},
1482          {104, 0x35},
1483          {98, 0x35},
1484          {110, 0x34},
1485          {104, 0x34},
1486          {98, 0x34},
1487          {110, 0x33},
1488          {104, 0x33},
1489          {98, 0x33},
1490          {110, 0x32},
1491          {104, 0x32},
1492          {98, 0x32},
1493          {110, 0x31},
1494          {104, 0x31},
1495          {98, 0x31},
1496          {110, 0x30},
1497          {104, 0x30},
1498          {98, 0x30},
1499          {110, 0x6},
1500          {104, 0x6},
1501          {98, 0x6},
1502          {110, 0x5},
1503          {104, 0x5},
1504          {98, 0x5},
1505          {110, 0x4},
1506          {104, 0x4},
1507          {98, 0x4},
1508          {110, 0x3},
1509          {104, 0x3},
1510          {98, 0x3},
1511          {110, 0x2},
1512          {104, 0x2},
1513          {98, 0x2},
1514          {110, 0x1},
1515          {104, 0x1},
1516          {98, 0x1},
1517          {110, 0x0},
1518          {104, 0x0},
1519          {98, 0x0},
1520          {97, 0},
1521          {96, 0},
1522          {95, 0},
1523          {94, 0},
1524          {93, 0},
1525          {92, 0},
1526          {91, 0},
1527          {90, 0},
1528          {89, 0},
1529          {88, 0},
1530          {87, 0},
1531          {86, 0},
1532          {85, 0},
1533          {84, 0},
1534          {83, 0},
1535          {82, 0},
1536          {81, 0},
1537          {80, 0},
1538          {79, 0},
1539          {78, 0},
1540          {77, 0},
1541          {76, 0},
1542          {75, 0},
1543          {74, 0},
1544          {73, 0},
1545          {72, 0},
1546          {71, 0},
1547          {70, 0},
1548          {69, 0},
1549          {68, 0},
1550          {67, 0},
1551          {66, 0},
1552          {65, 0},
1553          {64, 0},
1554          {63, 0},
1555          {62, 0},
1556          {61, 0},
1557          {60, 0},
1558          {59, 0},
1559          }
1560 };
1561
1562 static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
1563                                     u8 is_fat, u8 ctrl_chan_high,
1564                                     struct iwl4965_tx_power_db *tx_power_tbl)
1565 {
1566         u8 saturation_power;
1567         s32 target_power;
1568         s32 user_target_power;
1569         s32 power_limit;
1570         s32 current_temp;
1571         s32 reg_limit;
1572         s32 current_regulatory;
1573         s32 txatten_grp = CALIB_CH_GROUP_MAX;
1574         int i;
1575         int c;
1576         const struct iwl_channel_info *ch_info = NULL;
1577         struct iwl_eeprom_calib_ch_info ch_eeprom_info;
1578         const struct iwl_eeprom_calib_measure *measurement;
1579         s16 voltage;
1580         s32 init_voltage;
1581         s32 voltage_compensation;
1582         s32 degrees_per_05db_num;
1583         s32 degrees_per_05db_denom;
1584         s32 factory_temp;
1585         s32 temperature_comp[2];
1586         s32 factory_gain_index[2];
1587         s32 factory_actual_pwr[2];
1588         s32 power_index;
1589
1590         /* Sanity check requested level (dBm) */
1591         if (priv->user_txpower_limit < IWL_TX_POWER_TARGET_POWER_MIN) {
1592                 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
1593                             priv->user_txpower_limit);
1594                 return -EINVAL;
1595         }
1596         if (priv->user_txpower_limit > IWL_TX_POWER_TARGET_POWER_MAX) {
1597                 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
1598                             priv->user_txpower_limit);
1599                 return -EINVAL;
1600         }
1601
1602         /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
1603          *   are used for indexing into txpower table) */
1604         user_target_power = 2 * priv->user_txpower_limit;
1605
1606         /* Get current (RXON) channel, band, width */
1607         ch_info =
1608                 iwl4965_get_channel_txpower_info(priv, priv->band, channel);
1609
1610         IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band,
1611                           is_fat);
1612
1613         if (!ch_info)
1614                 return -EINVAL;
1615
1616         /* get txatten group, used to select 1) thermal txpower adjustment
1617          *   and 2) mimo txpower balance between Tx chains. */
1618         txatten_grp = iwl4965_get_tx_atten_grp(channel);
1619         if (txatten_grp < 0)
1620                 return -EINVAL;
1621
1622         IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
1623                           channel, txatten_grp);
1624
1625         if (is_fat) {
1626                 if (ctrl_chan_high)
1627                         channel -= 2;
1628                 else
1629                         channel += 2;
1630         }
1631
1632         /* hardware txpower limits ...
1633          * saturation (clipping distortion) txpowers are in half-dBm */
1634         if (band)
1635                 saturation_power = priv->calib_info->saturation_power24;
1636         else
1637                 saturation_power = priv->calib_info->saturation_power52;
1638
1639         if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
1640             saturation_power > IWL_TX_POWER_SATURATION_MAX) {
1641                 if (band)
1642                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
1643                 else
1644                         saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
1645         }
1646
1647         /* regulatory txpower limits ... reg_limit values are in half-dBm,
1648          *   max_power_avg values are in dBm, convert * 2 */
1649         if (is_fat)
1650                 reg_limit = ch_info->fat_max_power_avg * 2;
1651         else
1652                 reg_limit = ch_info->max_power_avg * 2;
1653
1654         if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
1655             (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
1656                 if (band)
1657                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
1658                 else
1659                         reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
1660         }
1661
1662         /* Interpolate txpower calibration values for this channel,
1663          *   based on factory calibration tests on spaced channels. */
1664         iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
1665
1666         /* calculate tx gain adjustment based on power supply voltage */
1667         voltage = priv->calib_info->voltage;
1668         init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
1669         voltage_compensation =
1670             iwl4965_get_voltage_compensation(voltage, init_voltage);
1671
1672         IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n",
1673                           init_voltage,
1674                           voltage, voltage_compensation);
1675
1676         /* get current temperature (Celsius) */
1677         current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
1678         current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
1679         current_temp = KELVIN_TO_CELSIUS(current_temp);
1680
1681         /* select thermal txpower adjustment params, based on channel group
1682          *   (same frequency group used for mimo txatten adjustment) */
1683         degrees_per_05db_num =
1684             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
1685         degrees_per_05db_denom =
1686             tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
1687
1688         /* get per-chain txpower values from factory measurements */
1689         for (c = 0; c < 2; c++) {
1690                 measurement = &ch_eeprom_info.measurements[c][1];
1691
1692                 /* txgain adjustment (in half-dB steps) based on difference
1693                  *   between factory and current temperature */
1694                 factory_temp = measurement->temperature;
1695                 iwl4965_math_div_round((current_temp - factory_temp) *
1696                                        degrees_per_05db_denom,
1697                                        degrees_per_05db_num,
1698                                        &temperature_comp[c]);
1699
1700                 factory_gain_index[c] = measurement->gain_idx;
1701                 factory_actual_pwr[c] = measurement->actual_pow;
1702
1703                 IWL_DEBUG_TXPOWER("chain = %d\n", c);
1704                 IWL_DEBUG_TXPOWER("fctry tmp %d, "
1705                                   "curr tmp %d, comp %d steps\n",
1706                                   factory_temp, current_temp,
1707                                   temperature_comp[c]);
1708
1709                 IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n",
1710                                   factory_gain_index[c],
1711                                   factory_actual_pwr[c]);
1712         }
1713
1714         /* for each of 33 bit-rates (including 1 for CCK) */
1715         for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
1716                 u8 is_mimo_rate;
1717                 union iwl4965_tx_power_dual_stream tx_power;
1718
1719                 /* for mimo, reduce each chain's txpower by half
1720                  * (3dB, 6 steps), so total output power is regulatory
1721                  * compliant. */
1722                 if (i & 0x8) {
1723                         current_regulatory = reg_limit -
1724                             IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
1725                         is_mimo_rate = 1;
1726                 } else {
1727                         current_regulatory = reg_limit;
1728                         is_mimo_rate = 0;
1729                 }
1730
1731                 /* find txpower limit, either hardware or regulatory */
1732                 power_limit = saturation_power - back_off_table[i];
1733                 if (power_limit > current_regulatory)
1734                         power_limit = current_regulatory;
1735
1736                 /* reduce user's txpower request if necessary
1737                  * for this rate on this channel */
1738                 target_power = user_target_power;
1739                 if (target_power > power_limit)
1740                         target_power = power_limit;
1741
1742                 IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n",
1743                                   i, saturation_power - back_off_table[i],
1744                                   current_regulatory, user_target_power,
1745                                   target_power);
1746
1747                 /* for each of 2 Tx chains (radio transmitters) */
1748                 for (c = 0; c < 2; c++) {
1749                         s32 atten_value;
1750
1751                         if (is_mimo_rate)
1752                                 atten_value =
1753                                     (s32)le32_to_cpu(priv->card_alive_init.
1754                                     tx_atten[txatten_grp][c]);
1755                         else
1756                                 atten_value = 0;
1757
1758                         /* calculate index; higher index means lower txpower */
1759                         power_index = (u8) (factory_gain_index[c] -
1760                                             (target_power -
1761                                              factory_actual_pwr[c]) -
1762                                             temperature_comp[c] -
1763                                             voltage_compensation +
1764                                             atten_value);
1765
1766 /*                      IWL_DEBUG_TXPOWER("calculated txpower index %d\n",
1767                                                 power_index); */
1768
1769                         if (power_index < get_min_power_index(i, band))
1770                                 power_index = get_min_power_index(i, band);
1771
1772                         /* adjust 5 GHz index to support negative indexes */
1773                         if (!band)
1774                                 power_index += 9;
1775
1776                         /* CCK, rate 32, reduce txpower for CCK */
1777                         if (i == POWER_TABLE_CCK_ENTRY)
1778                                 power_index +=
1779                                     IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
1780
1781                         /* stay within the table! */
1782                         if (power_index > 107) {
1783                                 IWL_WARNING("txpower index %d > 107\n",
1784                                             power_index);
1785                                 power_index = 107;
1786                         }
1787                         if (power_index < 0) {
1788                                 IWL_WARNING("txpower index %d < 0\n",
1789                                             power_index);
1790                                 power_index = 0;
1791                         }
1792
1793                         /* fill txpower command for this rate/chain */
1794                         tx_power.s.radio_tx_gain[c] =
1795                                 gain_table[band][power_index].radio;
1796                         tx_power.s.dsp_predis_atten[c] =
1797                                 gain_table[band][power_index].dsp;
1798
1799                         IWL_DEBUG_TXPOWER("chain %d mimo %d index %d "
1800                                           "gain 0x%02x dsp %d\n",
1801                                           c, atten_value, power_index,
1802                                         tx_power.s.radio_tx_gain[c],
1803                                         tx_power.s.dsp_predis_atten[c]);
1804                 }/* for each chain */
1805
1806                 tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
1807
1808         }/* for each rate */
1809
1810         return 0;
1811 }
1812
1813 /**
1814  * iwl4965_hw_reg_send_txpower - Configure the TXPOWER level user limit
1815  *
1816  * Uses the active RXON for channel, band, and characteristics (fat, high)
1817  * The power limit is taken from priv->user_txpower_limit.
1818  */
1819 int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv)
1820 {
1821         struct iwl4965_txpowertable_cmd cmd = { 0 };
1822         int ret;
1823         u8 band = 0;
1824         u8 is_fat = 0;
1825         u8 ctrl_chan_high = 0;
1826
1827         if (test_bit(STATUS_SCANNING, &priv->status)) {
1828                 /* If this gets hit a lot, switch it to a BUG() and catch
1829                  * the stack trace to find out who is calling this during
1830                  * a scan. */
1831                 IWL_WARNING("TX Power requested while scanning!\n");
1832                 return -EAGAIN;
1833         }
1834
1835         band = priv->band == IEEE80211_BAND_2GHZ;
1836
1837         is_fat =  is_fat_channel(priv->active_rxon.flags);
1838
1839         if (is_fat &&
1840             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1841                 ctrl_chan_high = 1;
1842
1843         cmd.band = band;
1844         cmd.channel = priv->active_rxon.channel;
1845
1846         ret = iwl4965_fill_txpower_tbl(priv, band,
1847                                 le16_to_cpu(priv->active_rxon.channel),
1848                                 is_fat, ctrl_chan_high, &cmd.tx_power);
1849         if (ret)
1850                 goto out;
1851
1852         ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
1853
1854 out:
1855         return ret;
1856 }
1857
1858 static int iwl4965_send_rxon_assoc(struct iwl_priv *priv)
1859 {
1860         int ret = 0;
1861         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1862         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1863         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1864
1865         if ((rxon1->flags == rxon2->flags) &&
1866             (rxon1->filter_flags == rxon2->filter_flags) &&
1867             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1868             (rxon1->ofdm_ht_single_stream_basic_rates ==
1869              rxon2->ofdm_ht_single_stream_basic_rates) &&
1870             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1871              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1872             (rxon1->rx_chain == rxon2->rx_chain) &&
1873             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1874                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1875                 return 0;
1876         }
1877
1878         rxon_assoc.flags = priv->staging_rxon.flags;
1879         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1880         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1881         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1882         rxon_assoc.reserved = 0;
1883         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1884             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1885         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1886             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1887         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1888
1889         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1890                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1891         if (ret)
1892                 return ret;
1893
1894         return ret;
1895 }
1896
1897
1898 int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1899 {
1900         int rc;
1901         u8 band = 0;
1902         u8 is_fat = 0;
1903         u8 ctrl_chan_high = 0;
1904         struct iwl4965_channel_switch_cmd cmd = { 0 };
1905         const struct iwl_channel_info *ch_info;
1906
1907         band = priv->band == IEEE80211_BAND_2GHZ;
1908
1909         ch_info = iwl_get_channel_info(priv, priv->band, channel);
1910
1911         is_fat = is_fat_channel(priv->staging_rxon.flags);
1912
1913         if (is_fat &&
1914             (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
1915                 ctrl_chan_high = 1;
1916
1917         cmd.band = band;
1918         cmd.expect_beacon = 0;
1919         cmd.channel = cpu_to_le16(channel);
1920         cmd.rxon_flags = priv->active_rxon.flags;
1921         cmd.rxon_filter_flags = priv->active_rxon.filter_flags;
1922         cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
1923         if (ch_info)
1924                 cmd.expect_beacon = is_channel_radar(ch_info);
1925         else
1926                 cmd.expect_beacon = 1;
1927
1928         rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_fat,
1929                                       ctrl_chan_high, &cmd.tx_power);
1930         if (rc) {
1931                 IWL_DEBUG_11H("error:%d  fill txpower_tbl\n", rc);
1932                 return rc;
1933         }
1934
1935         rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
1936         return rc;
1937 }
1938
1939 #define RTS_HCCA_RETRY_LIMIT            3
1940 #define RTS_DFAULT_RETRY_LIMIT          60
1941
1942 void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv,
1943                               struct iwl_cmd *cmd,
1944                               struct ieee80211_tx_control *ctrl,
1945                               struct ieee80211_hdr *hdr, int sta_id,
1946                               int is_hcca)
1947 {
1948         struct iwl4965_tx_cmd *tx = &cmd->cmd.tx;
1949         u8 rts_retry_limit = 0;
1950         u8 data_retry_limit = 0;
1951         u16 fc = le16_to_cpu(hdr->frame_control);
1952         u8 rate_plcp;
1953         u16 rate_flags = 0;
1954         int rate_idx = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1);
1955
1956         rate_plcp = iwl4965_rates[rate_idx].plcp;
1957
1958         rts_retry_limit = (is_hcca) ?
1959             RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT;
1960
1961         if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
1962                 rate_flags |= RATE_MCS_CCK_MSK;
1963
1964
1965         if (ieee80211_is_probe_response(fc)) {
1966                 data_retry_limit = 3;
1967                 if (data_retry_limit < rts_retry_limit)
1968                         rts_retry_limit = data_retry_limit;
1969         } else
1970                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
1971
1972         if (priv->data_retry_limit != -1)
1973                 data_retry_limit = priv->data_retry_limit;
1974
1975
1976         if (ieee80211_is_data(fc)) {
1977                 tx->initial_rate_index = 0;
1978                 tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
1979         } else {
1980                 switch (fc & IEEE80211_FCTL_STYPE) {
1981                 case IEEE80211_STYPE_AUTH:
1982                 case IEEE80211_STYPE_DEAUTH:
1983                 case IEEE80211_STYPE_ASSOC_REQ:
1984                 case IEEE80211_STYPE_REASSOC_REQ:
1985                         if (tx->tx_flags & TX_CMD_FLG_RTS_MSK) {
1986                                 tx->tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1987                                 tx->tx_flags |= TX_CMD_FLG_CTS_MSK;
1988                         }
1989                         break;
1990                 default:
1991                         break;
1992                 }
1993
1994                 /* Alternate between antenna A and B for successive frames */
1995                 if (priv->use_ant_b_for_management_frame) {
1996                         priv->use_ant_b_for_management_frame = 0;
1997                         rate_flags |= RATE_MCS_ANT_B_MSK;
1998                 } else {
1999                         priv->use_ant_b_for_management_frame = 1;
2000                         rate_flags |= RATE_MCS_ANT_A_MSK;
2001                 }
2002         }
2003
2004         tx->rts_retry_limit = rts_retry_limit;
2005         tx->data_retry_limit = data_retry_limit;
2006         tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags);
2007 }
2008
2009 static int iwl4965_shared_mem_rx_idx(struct iwl_priv *priv)
2010 {
2011         struct iwl4965_shared *s = priv->shared_virt;
2012         return le32_to_cpu(s->rb_closed) & 0xFFF;
2013 }
2014
2015 int iwl4965_hw_get_temperature(struct iwl_priv *priv)
2016 {
2017         return priv->temperature;
2018 }
2019
2020 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
2021                           struct iwl4965_frame *frame, u8 rate)
2022 {
2023         struct iwl4965_tx_beacon_cmd *tx_beacon_cmd;
2024         unsigned int frame_size;
2025
2026         tx_beacon_cmd = &frame->u.beacon;
2027         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2028
2029         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2030         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2031
2032         frame_size = iwl4965_fill_beacon_frame(priv,
2033                                 tx_beacon_cmd->frame,
2034                                 iwl4965_broadcast_addr,
2035                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2036
2037         BUG_ON(frame_size > MAX_MPDU_SIZE);
2038         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2039
2040         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
2041                 tx_beacon_cmd->tx.rate_n_flags =
2042                         iwl4965_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
2043         else
2044                 tx_beacon_cmd->tx.rate_n_flags =
2045                         iwl4965_hw_set_rate_n_flags(rate, 0);
2046
2047         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2048                                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK);
2049         return (sizeof(*tx_beacon_cmd) + frame_size);
2050 }
2051
2052 int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
2053                                  dma_addr_t addr, u16 len)
2054 {
2055         int index, is_odd;
2056         struct iwl_tfd_frame *tfd = ptr;
2057         u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs);
2058
2059         /* Each TFD can point to a maximum 20 Tx buffers */
2060         if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) {
2061                 IWL_ERROR("Error can not send more than %d chunks\n",
2062                           MAX_NUM_OF_TBS);
2063                 return -EINVAL;
2064         }
2065
2066         index = num_tbs / 2;
2067         is_odd = num_tbs & 0x1;
2068
2069         if (!is_odd) {
2070                 tfd->pa[index].tb1_addr = cpu_to_le32(addr);
2071                 IWL_SET_BITS(tfd->pa[index], tb1_addr_hi,
2072                              iwl_get_dma_hi_address(addr));
2073                 IWL_SET_BITS(tfd->pa[index], tb1_len, len);
2074         } else {
2075                 IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16,
2076                              (u32) (addr & 0xffff));
2077                 IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16);
2078                 IWL_SET_BITS(tfd->pa[index], tb2_len, len);
2079         }
2080
2081         IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1);
2082
2083         return 0;
2084 }
2085
2086 static int iwl4965_alloc_shared_mem(struct iwl_priv *priv)
2087 {
2088         priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
2089                                         sizeof(struct iwl4965_shared),
2090                                         &priv->shared_phys);
2091         if (!priv->shared_virt)
2092                 return -ENOMEM;
2093
2094         memset(priv->shared_virt, 0, sizeof(struct iwl4965_shared));
2095
2096         priv->rb_closed_offset = offsetof(struct iwl4965_shared, rb_closed);
2097
2098         return 0;
2099 }
2100
2101 static void iwl4965_free_shared_mem(struct iwl_priv *priv)
2102 {
2103         if (priv->shared_virt)
2104                 pci_free_consistent(priv->pci_dev,
2105                                     sizeof(struct iwl4965_shared),
2106                                     priv->shared_virt,
2107                                     priv->shared_phys);
2108 }
2109
2110 /**
2111  * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
2112  */
2113 static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
2114                                             struct iwl_tx_queue *txq,
2115                                             u16 byte_cnt)
2116 {
2117         int len;
2118         int txq_id = txq->q.id;
2119         struct iwl4965_shared *shared_data = priv->shared_virt;
2120
2121         len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
2122
2123         /* Set up byte count within first 256 entries */
2124         IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
2125                        tfd_offset[txq->q.write_ptr], byte_cnt, len);
2126
2127         /* If within first 64 entries, duplicate at end */
2128         if (txq->q.write_ptr < IWL49_MAX_WIN_SIZE)
2129                 IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
2130                         tfd_offset[IWL49_QUEUE_SIZE + txq->q.write_ptr],
2131                         byte_cnt, len);
2132 }
2133
2134 /**
2135  * sign_extend - Sign extend a value using specified bit as sign-bit
2136  *
2137  * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
2138  * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
2139  *
2140  * @param oper value to sign extend
2141  * @param index 0 based bit index (0<=index<32) to sign bit
2142  */
2143 static s32 sign_extend(u32 oper, int index)
2144 {
2145         u8 shift = 31 - index;
2146
2147         return (s32)(oper << shift) >> shift;
2148 }
2149
2150 /**
2151  * iwl4965_get_temperature - return the calibrated temperature (in Kelvin)
2152  * @statistics: Provides the temperature reading from the uCode
2153  *
2154  * A return of <0 indicates bogus data in the statistics
2155  */
2156 int iwl4965_get_temperature(const struct iwl_priv *priv)
2157 {
2158         s32 temperature;
2159         s32 vt;
2160         s32 R1, R2, R3;
2161         u32 R4;
2162
2163         if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
2164                 (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)) {
2165                 IWL_DEBUG_TEMP("Running FAT temperature calibration\n");
2166                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
2167                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
2168                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
2169                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
2170         } else {
2171                 IWL_DEBUG_TEMP("Running temperature calibration\n");
2172                 R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
2173                 R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
2174                 R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
2175                 R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
2176         }
2177
2178         /*
2179          * Temperature is only 23 bits, so sign extend out to 32.
2180          *
2181          * NOTE If we haven't received a statistics notification yet
2182          * with an updated temperature, use R4 provided to us in the
2183          * "initialize" ALIVE response.
2184          */
2185         if (!test_bit(STATUS_TEMPERATURE, &priv->status))
2186                 vt = sign_extend(R4, 23);
2187         else
2188                 vt = sign_extend(
2189                         le32_to_cpu(priv->statistics.general.temperature), 23);
2190
2191         IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
2192                        R1, R2, R3, vt);
2193
2194         if (R3 == R1) {
2195                 IWL_ERROR("Calibration conflict R1 == R3\n");
2196                 return -1;
2197         }
2198
2199         /* Calculate temperature in degrees Kelvin, adjust by 97%.
2200          * Add offset to center the adjustment around 0 degrees Centigrade. */
2201         temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
2202         temperature /= (R3 - R1);
2203         temperature = (temperature * 97) / 100 +
2204             TEMPERATURE_CALIB_KELVIN_OFFSET;
2205
2206         IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
2207             KELVIN_TO_CELSIUS(temperature));
2208
2209         return temperature;
2210 }
2211
2212 /* Adjust Txpower only if temperature variance is greater than threshold. */
2213 #define IWL_TEMPERATURE_THRESHOLD   3
2214
2215 /**
2216  * iwl4965_is_temp_calib_needed - determines if new calibration is needed
2217  *
2218  * If the temperature changed has changed sufficiently, then a recalibration
2219  * is needed.
2220  *
2221  * Assumes caller will replace priv->last_temperature once calibration
2222  * executed.
2223  */
2224 static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
2225 {
2226         int temp_diff;
2227
2228         if (!test_bit(STATUS_STATISTICS, &priv->status)) {
2229                 IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n");
2230                 return 0;
2231         }
2232
2233         temp_diff = priv->temperature - priv->last_temperature;
2234
2235         /* get absolute value */
2236         if (temp_diff < 0) {
2237                 IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff);
2238                 temp_diff = -temp_diff;
2239         } else if (temp_diff == 0)
2240                 IWL_DEBUG_POWER("Same temp, \n");
2241         else
2242                 IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff);
2243
2244         if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
2245                 IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
2246                 return 0;
2247         }
2248
2249         IWL_DEBUG_POWER("Thermal txpower calib needed\n");
2250
2251         return 1;
2252 }
2253
2254 /* Calculate noise level, based on measurements during network silence just
2255  *   before arriving beacon.  This measurement can be done only if we know
2256  *   exactly when to expect beacons, therefore only when we're associated. */
2257 static void iwl4965_rx_calc_noise(struct iwl_priv *priv)
2258 {
2259         struct statistics_rx_non_phy *rx_info
2260                                 = &(priv->statistics.rx.general);
2261         int num_active_rx = 0;
2262         int total_silence = 0;
2263         int bcn_silence_a =
2264                 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
2265         int bcn_silence_b =
2266                 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
2267         int bcn_silence_c =
2268                 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
2269
2270         if (bcn_silence_a) {
2271                 total_silence += bcn_silence_a;
2272                 num_active_rx++;
2273         }
2274         if (bcn_silence_b) {
2275                 total_silence += bcn_silence_b;
2276                 num_active_rx++;
2277         }
2278         if (bcn_silence_c) {
2279                 total_silence += bcn_silence_c;
2280                 num_active_rx++;
2281         }
2282
2283         /* Average among active antennas */
2284         if (num_active_rx)
2285                 priv->last_rx_noise = (total_silence / num_active_rx) - 107;
2286         else
2287                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2288
2289         IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
2290                         bcn_silence_a, bcn_silence_b, bcn_silence_c,
2291                         priv->last_rx_noise);
2292 }
2293
2294 void iwl4965_hw_rx_statistics(struct iwl_priv *priv,
2295                               struct iwl_rx_mem_buffer *rxb)
2296 {
2297         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2298         int change;
2299         s32 temp;
2300
2301         IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
2302                      (int)sizeof(priv->statistics), pkt->len);
2303
2304         change = ((priv->statistics.general.temperature !=
2305                    pkt->u.stats.general.temperature) ||
2306                   ((priv->statistics.flag &
2307                     STATISTICS_REPLY_FLG_FAT_MODE_MSK) !=
2308                    (pkt->u.stats.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)));
2309
2310         memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
2311
2312         set_bit(STATUS_STATISTICS, &priv->status);
2313
2314         /* Reschedule the statistics timer to occur in
2315          * REG_RECALIB_PERIOD seconds to ensure we get a
2316          * thermal update even if the uCode doesn't give
2317          * us one */
2318         mod_timer(&priv->statistics_periodic, jiffies +
2319                   msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
2320
2321         if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
2322             (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
2323                 iwl4965_rx_calc_noise(priv);
2324 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
2325                 queue_work(priv->workqueue, &priv->sensitivity_work);
2326 #endif
2327         }
2328
2329         iwl_leds_background(priv);
2330
2331         /* If the hardware hasn't reported a change in
2332          * temperature then don't bother computing a
2333          * calibrated temperature value */
2334         if (!change)
2335                 return;
2336
2337         temp = iwl4965_get_temperature(priv);
2338         if (temp < 0)
2339                 return;
2340
2341         if (priv->temperature != temp) {
2342                 if (priv->temperature)
2343                         IWL_DEBUG_TEMP("Temperature changed "
2344                                        "from %dC to %dC\n",
2345                                        KELVIN_TO_CELSIUS(priv->temperature),
2346                                        KELVIN_TO_CELSIUS(temp));
2347                 else
2348                         IWL_DEBUG_TEMP("Temperature "
2349                                        "initialized to %dC\n",
2350                                        KELVIN_TO_CELSIUS(temp));
2351         }
2352
2353         priv->temperature = temp;
2354         set_bit(STATUS_TEMPERATURE, &priv->status);
2355
2356         if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
2357                      iwl4965_is_temp_calib_needed(priv))
2358                 queue_work(priv->workqueue, &priv->txpower_work);
2359 }
2360
2361 static void iwl4965_add_radiotap(struct iwl_priv *priv,
2362                                  struct sk_buff *skb,
2363                                  struct iwl4965_rx_phy_res *rx_start,
2364                                  struct ieee80211_rx_status *stats,
2365                                  u32 ampdu_status)
2366 {
2367         s8 signal = stats->ssi;
2368         s8 noise = 0;
2369         int rate = stats->rate_idx;
2370         u64 tsf = stats->mactime;
2371         __le16 antenna;
2372         __le16 phy_flags_hw = rx_start->phy_flags;
2373         struct iwl4965_rt_rx_hdr {
2374                 struct ieee80211_radiotap_header rt_hdr;
2375                 __le64 rt_tsf;          /* TSF */
2376                 u8 rt_flags;            /* radiotap packet flags */
2377                 u8 rt_rate;             /* rate in 500kb/s */
2378                 __le16 rt_channelMHz;   /* channel in MHz */
2379                 __le16 rt_chbitmask;    /* channel bitfield */
2380                 s8 rt_dbmsignal;        /* signal in dBm, kluged to signed */
2381                 s8 rt_dbmnoise;
2382                 u8 rt_antenna;          /* antenna number */
2383         } __attribute__ ((packed)) *iwl4965_rt;
2384
2385         /* TODO: We won't have enough headroom for HT frames. Fix it later. */
2386         if (skb_headroom(skb) < sizeof(*iwl4965_rt)) {
2387                 if (net_ratelimit())
2388                         printk(KERN_ERR "not enough headroom [%d] for "
2389                                "radiotap head [%zd]\n",
2390                                skb_headroom(skb), sizeof(*iwl4965_rt));
2391                 return;
2392         }
2393
2394         /* put radiotap header in front of 802.11 header and data */
2395         iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt));
2396
2397         /* initialise radiotap header */
2398         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
2399         iwl4965_rt->rt_hdr.it_pad = 0;
2400
2401         /* total header + data */
2402         put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt)),
2403                       &iwl4965_rt->rt_hdr.it_len);
2404
2405         /* Indicate all the fields we add to the radiotap header */
2406         put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
2407                                   (1 << IEEE80211_RADIOTAP_FLAGS) |
2408                                   (1 << IEEE80211_RADIOTAP_RATE) |
2409                                   (1 << IEEE80211_RADIOTAP_CHANNEL) |
2410                                   (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
2411                                   (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
2412                                   (1 << IEEE80211_RADIOTAP_ANTENNA)),
2413                       &iwl4965_rt->rt_hdr.it_present);
2414
2415         /* Zero the flags, we'll add to them as we go */
2416         iwl4965_rt->rt_flags = 0;
2417
2418         put_unaligned(cpu_to_le64(tsf), &iwl4965_rt->rt_tsf);
2419
2420         iwl4965_rt->rt_dbmsignal = signal;
2421         iwl4965_rt->rt_dbmnoise = noise;
2422
2423         /* Convert the channel frequency and set the flags */
2424         put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz);
2425         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
2426                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM |
2427                                           IEEE80211_CHAN_5GHZ),
2428                               &iwl4965_rt->rt_chbitmask);
2429         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
2430                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK |
2431                                           IEEE80211_CHAN_2GHZ),
2432                               &iwl4965_rt->rt_chbitmask);
2433         else    /* 802.11g */
2434                 put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM |
2435                                           IEEE80211_CHAN_2GHZ),
2436                               &iwl4965_rt->rt_chbitmask);
2437
2438         if (rate == -1)
2439                 iwl4965_rt->rt_rate = 0;
2440         else
2441                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
2442
2443         /*
2444          * "antenna number"
2445          *
2446          * It seems that the antenna field in the phy flags value
2447          * is actually a bitfield. This is undefined by radiotap,
2448          * it wants an actual antenna number but I always get "7"
2449          * for most legacy frames I receive indicating that the
2450          * same frame was received on all three RX chains.
2451          *
2452          * I think this field should be removed in favour of a
2453          * new 802.11n radiotap field "RX chains" that is defined
2454          * as a bitmask.
2455          */
2456         antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
2457         iwl4965_rt->rt_antenna = le16_to_cpu(antenna) >> 4;
2458
2459         /* set the preamble flag if appropriate */
2460         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
2461                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
2462
2463         stats->flag |= RX_FLAG_RADIOTAP;
2464 }
2465
2466 static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len)
2467 {
2468         /* 0 - mgmt, 1 - cnt, 2 - data */
2469         int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
2470         priv->rx_stats[idx].cnt++;
2471         priv->rx_stats[idx].bytes += len;
2472 }
2473
2474 /*
2475  * returns non-zero if packet should be dropped
2476  */
2477 static int iwl4965_set_decrypted_flag(struct iwl_priv *priv,
2478                                       struct ieee80211_hdr *hdr,
2479                                       u32 decrypt_res,
2480                                       struct ieee80211_rx_status *stats)
2481 {
2482         u16 fc = le16_to_cpu(hdr->frame_control);
2483
2484         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2485                 return 0;
2486
2487         if (!(fc & IEEE80211_FCTL_PROTECTED))
2488                 return 0;
2489
2490         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2491         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2492         case RX_RES_STATUS_SEC_TYPE_TKIP:
2493                 /* The uCode has got a bad phase 1 Key, pushes the packet.
2494                  * Decryption will be done in SW. */
2495                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2496                     RX_RES_STATUS_BAD_KEY_TTAK)
2497                         break;
2498
2499                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2500                     RX_RES_STATUS_BAD_ICV_MIC) {
2501                         /* bad ICV, the packet is destroyed since the
2502                          * decryption is inplace, drop it */
2503                         IWL_DEBUG_RX("Packet destroyed\n");
2504                         return -1;
2505                 }
2506         case RX_RES_STATUS_SEC_TYPE_WEP:
2507         case RX_RES_STATUS_SEC_TYPE_CCMP:
2508                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2509                     RX_RES_STATUS_DECRYPT_OK) {
2510                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2511                         stats->flag |= RX_FLAG_DECRYPTED;
2512                 }
2513                 break;
2514
2515         default:
2516                 break;
2517         }
2518         return 0;
2519 }
2520
2521 static u32 iwl4965_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
2522 {
2523         u32 decrypt_out = 0;
2524
2525         if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
2526                                         RX_RES_STATUS_STATION_FOUND)
2527                 decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
2528                                 RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
2529
2530         decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
2531
2532         /* packet was not encrypted */
2533         if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
2534                                         RX_RES_STATUS_SEC_TYPE_NONE)
2535                 return decrypt_out;
2536
2537         /* packet was encrypted with unknown alg */
2538         if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
2539                                         RX_RES_STATUS_SEC_TYPE_ERR)
2540                 return decrypt_out;
2541
2542         /* decryption was not done in HW */
2543         if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
2544                                         RX_MPDU_RES_STATUS_DEC_DONE_MSK)
2545                 return decrypt_out;
2546
2547         switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
2548
2549         case RX_RES_STATUS_SEC_TYPE_CCMP:
2550                 /* alg is CCM: check MIC only */
2551                 if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
2552                         /* Bad MIC */
2553                         decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
2554                 else
2555                         decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
2556
2557                 break;
2558
2559         case RX_RES_STATUS_SEC_TYPE_TKIP:
2560                 if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
2561                         /* Bad TTAK */
2562                         decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
2563                         break;
2564                 }
2565                 /* fall through if TTAK OK */
2566         default:
2567                 if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
2568                         decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
2569                 else
2570                         decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
2571                 break;
2572         };
2573
2574         IWL_DEBUG_RX("decrypt_in:0x%x  decrypt_out = 0x%x\n",
2575                                         decrypt_in, decrypt_out);
2576
2577         return decrypt_out;
2578 }
2579
2580 static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
2581                                        int include_phy,
2582                                        struct iwl_rx_mem_buffer *rxb,
2583                                        struct ieee80211_rx_status *stats)
2584 {
2585         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2586         struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
2587             (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL;
2588         struct ieee80211_hdr *hdr;
2589         u16 len;
2590         __le32 *rx_end;
2591         unsigned int skblen;
2592         u32 ampdu_status;
2593         u32 ampdu_status_legacy;
2594
2595         if (!include_phy && priv->last_phy_res[0])
2596                 rx_start = (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
2597
2598         if (!rx_start) {
2599                 IWL_ERROR("MPDU frame without a PHY data\n");
2600                 return;
2601         }
2602         if (include_phy) {
2603                 hdr = (struct ieee80211_hdr *)((u8 *) & rx_start[1] +
2604                                                rx_start->cfg_phy_cnt);
2605
2606                 len = le16_to_cpu(rx_start->byte_count);
2607
2608                 rx_end = (__le32 *) ((u8 *) & pkt->u.raw[0] +
2609                                   sizeof(struct iwl4965_rx_phy_res) +
2610                                   rx_start->cfg_phy_cnt + len);
2611
2612         } else {
2613                 struct iwl4965_rx_mpdu_res_start *amsdu =
2614                     (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
2615
2616                 hdr = (struct ieee80211_hdr *)(pkt->u.raw +
2617                                sizeof(struct iwl4965_rx_mpdu_res_start));
2618                 len =  le16_to_cpu(amsdu->byte_count);
2619                 rx_start->byte_count = amsdu->byte_count;
2620                 rx_end = (__le32 *) (((u8 *) hdr) + len);
2621         }
2622         /* In monitor mode allow 802.11 ACk frames (10 bytes) */
2623         if (len > priv->hw_params.max_pkt_size ||
2624             len < ((priv->iw_mode == IEEE80211_IF_TYPE_MNTR) ? 10 : 16)) {
2625                 IWL_WARNING("byte count out of range [16,4K] : %d\n", len);
2626                 return;
2627         }
2628
2629         ampdu_status = le32_to_cpu(*rx_end);
2630         skblen = ((u8 *) rx_end - (u8 *) & pkt->u.raw[0]) + sizeof(u32);
2631
2632         if (!include_phy) {
2633                 /* New status scheme, need to translate */
2634                 ampdu_status_legacy = ampdu_status;
2635                 ampdu_status = iwl4965_translate_rx_status(priv, ampdu_status);
2636         }
2637
2638         /* start from MAC */
2639         skb_reserve(rxb->skb, (void *)hdr - (void *)pkt);
2640         skb_put(rxb->skb, len); /* end where data ends */
2641
2642         /* We only process data packets if the interface is open */
2643         if (unlikely(!priv->is_open)) {
2644                 IWL_DEBUG_DROP_LIMIT
2645                     ("Dropping packet while interface is not open.\n");
2646                 return;
2647         }
2648
2649         stats->flag = 0;
2650         hdr = (struct ieee80211_hdr *)rxb->skb->data;
2651
2652         /*  in case of HW accelerated crypto and bad decryption, drop */
2653         if (!priv->hw_params.sw_crypto &&
2654             iwl4965_set_decrypted_flag(priv, hdr, ampdu_status, stats))
2655                 return;
2656
2657         if (priv->add_radiotap)
2658                 iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status);
2659
2660         iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len);
2661         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
2662         priv->alloc_rxb_skb--;
2663         rxb->skb = NULL;
2664 }
2665
2666 /* Calc max signal level (dBm) among 3 possible receivers */
2667 static int iwl4965_calc_rssi(struct iwl_priv *priv,
2668                              struct iwl4965_rx_phy_res *rx_resp)
2669 {
2670         /* data from PHY/DSP regarding signal strength, etc.,
2671          *   contents are always there, not configurable by host.  */
2672         struct iwl4965_rx_non_cfg_phy *ncphy =
2673             (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy;
2674         u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL_AGC_DB_MASK)
2675                         >> IWL_AGC_DB_POS;
2676
2677         u32 valid_antennae =
2678             (le16_to_cpu(rx_resp->phy_flags) & RX_PHY_FLAGS_ANTENNAE_MASK)
2679                         >> RX_PHY_FLAGS_ANTENNAE_OFFSET;
2680         u8 max_rssi = 0;
2681         u32 i;
2682
2683         /* Find max rssi among 3 possible receivers.
2684          * These values are measured by the digital signal processor (DSP).
2685          * They should stay fairly constant even as the signal strength varies,
2686          *   if the radio's automatic gain control (AGC) is working right.
2687          * AGC value (see below) will provide the "interesting" info. */
2688         for (i = 0; i < 3; i++)
2689                 if (valid_antennae & (1 << i))
2690                         max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
2691
2692         IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
2693                 ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
2694                 max_rssi, agc);
2695
2696         /* dBm = max_rssi dB - agc dB - constant.
2697          * Higher AGC (higher radio gain) means lower signal. */
2698         return (max_rssi - agc - IWL_RSSI_OFFSET);
2699 }
2700
2701 static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
2702 {
2703         unsigned long flags;
2704
2705         spin_lock_irqsave(&priv->sta_lock, flags);
2706         priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
2707         priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
2708         priv->stations[sta_id].sta.sta.modify_mask = 0;
2709         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
2710         spin_unlock_irqrestore(&priv->sta_lock, flags);
2711
2712         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
2713 }
2714
2715 static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
2716 {
2717         /* FIXME: need locking over ps_status ??? */
2718         u8 sta_id = iwl_find_station(priv, addr);
2719
2720         if (sta_id != IWL_INVALID_STATION) {
2721                 u8 sta_awake = priv->stations[sta_id].
2722                                 ps_status == STA_PS_STATUS_WAKE;
2723
2724                 if (sta_awake && ps_bit)
2725                         priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
2726                 else if (!sta_awake && !ps_bit) {
2727                         iwl4965_sta_modify_ps_wake(priv, sta_id);
2728                         priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
2729                 }
2730         }
2731 }
2732 #ifdef CONFIG_IWLWIFI_DEBUG
2733
2734 /**
2735  * iwl4965_dbg_report_frame - dump frame to syslog during debug sessions
2736  *
2737  * You may hack this function to show different aspects of received frames,
2738  * including selective frame dumps.
2739  * group100 parameter selects whether to show 1 out of 100 good frames.
2740  *
2741  * TODO:  This was originally written for 3945, need to audit for
2742  *        proper operation with 4965.
2743  */
2744 static void iwl4965_dbg_report_frame(struct iwl_priv *priv,
2745                       struct iwl_rx_packet *pkt,
2746                       struct ieee80211_hdr *header, int group100)
2747 {
2748         u32 to_us;
2749         u32 print_summary = 0;
2750         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
2751         u32 hundred = 0;
2752         u32 dataframe = 0;
2753         u16 fc;
2754         u16 seq_ctl;
2755         u16 channel;
2756         u16 phy_flags;
2757         int rate_sym;
2758         u16 length;
2759         u16 status;
2760         u16 bcn_tmr;
2761         u32 tsf_low;
2762         u64 tsf;
2763         u8 rssi;
2764         u8 agc;
2765         u16 sig_avg;
2766         u16 noise_diff;
2767         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
2768         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
2769         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
2770         u8 *data = IWL_RX_DATA(pkt);
2771
2772         if (likely(!(priv->debug_level & IWL_DL_RX)))
2773                 return;
2774
2775         /* MAC header */
2776         fc = le16_to_cpu(header->frame_control);
2777         seq_ctl = le16_to_cpu(header->seq_ctrl);
2778
2779         /* metadata */
2780         channel = le16_to_cpu(rx_hdr->channel);
2781         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
2782         rate_sym = rx_hdr->rate;
2783         length = le16_to_cpu(rx_hdr->len);
2784
2785         /* end-of-frame status and timestamp */
2786         status = le32_to_cpu(rx_end->status);
2787         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
2788         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
2789         tsf = le64_to_cpu(rx_end->timestamp);
2790
2791         /* signal statistics */
2792         rssi = rx_stats->rssi;
2793         agc = rx_stats->agc;
2794         sig_avg = le16_to_cpu(rx_stats->sig_avg);
2795         noise_diff = le16_to_cpu(rx_stats->noise_diff);
2796
2797         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
2798
2799         /* if data frame is to us and all is good,
2800          *   (optionally) print summary for only 1 out of every 100 */
2801         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
2802             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
2803                 dataframe = 1;
2804                 if (!group100)
2805                         print_summary = 1;      /* print each frame */
2806                 else if (priv->framecnt_to_us < 100) {
2807                         priv->framecnt_to_us++;
2808                         print_summary = 0;
2809                 } else {
2810                         priv->framecnt_to_us = 0;
2811                         print_summary = 1;
2812                         hundred = 1;
2813                 }
2814         } else {
2815                 /* print summary for all other frames */
2816                 print_summary = 1;
2817         }
2818
2819         if (print_summary) {
2820                 char *title;
2821                 int rate_idx;
2822                 u32 bitrate;
2823
2824                 if (hundred)
2825                         title = "100Frames";
2826                 else if (fc & IEEE80211_FCTL_RETRY)
2827                         title = "Retry";
2828                 else if (ieee80211_is_assoc_response(fc))
2829                         title = "AscRsp";
2830                 else if (ieee80211_is_reassoc_response(fc))
2831                         title = "RasRsp";
2832                 else if (ieee80211_is_probe_response(fc)) {
2833                         title = "PrbRsp";
2834                         print_dump = 1; /* dump frame contents */
2835                 } else if (ieee80211_is_beacon(fc)) {
2836                         title = "Beacon";
2837                         print_dump = 1; /* dump frame contents */
2838                 } else if (ieee80211_is_atim(fc))
2839                         title = "ATIM";
2840                 else if (ieee80211_is_auth(fc))
2841                         title = "Auth";
2842                 else if (ieee80211_is_deauth(fc))
2843                         title = "DeAuth";
2844                 else if (ieee80211_is_disassoc(fc))
2845                         title = "DisAssoc";
2846                 else
2847                         title = "Frame";
2848
2849                 rate_idx = iwl4965_hwrate_to_plcp_idx(rate_sym);
2850                 if (unlikely(rate_idx == -1))
2851                         bitrate = 0;
2852                 else
2853                         bitrate = iwl4965_rates[rate_idx].ieee / 2;
2854
2855                 /* print frame summary.
2856                  * MAC addresses show just the last byte (for brevity),
2857                  *    but you can hack it to show more, if you'd like to. */
2858                 if (dataframe)
2859                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
2860                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
2861                                      title, fc, header->addr1[5],
2862                                      length, rssi, channel, bitrate);
2863                 else {
2864                         /* src/dst addresses assume managed mode */
2865                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
2866                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
2867                                      "phy=0x%02x, chnl=%d\n",
2868                                      title, fc, header->addr1[5],
2869                                      header->addr3[5], rssi,
2870                                      tsf_low - priv->scan_start_tsf,
2871                                      phy_flags, channel);
2872                 }
2873         }
2874         if (print_dump)
2875                 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
2876 }
2877 #else
2878 static inline void iwl4965_dbg_report_frame(struct iwl_priv *priv,
2879                                             struct iwl_rx_packet *pkt,
2880                                             struct ieee80211_hdr *header,
2881                                             int group100)
2882 {
2883 }
2884 #endif
2885
2886
2887
2888 /* Called for REPLY_RX (legacy ABG frames), or
2889  * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
2890 static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
2891                                 struct iwl_rx_mem_buffer *rxb)
2892 {
2893         struct ieee80211_hdr *header;
2894         struct ieee80211_rx_status rx_status;
2895         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2896         /* Use phy data (Rx signal strength, etc.) contained within
2897          *   this rx packet for legacy frames,
2898          *   or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
2899         int include_phy = (pkt->hdr.cmd == REPLY_RX);
2900         struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
2901                 (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) :
2902                 (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
2903         __le32 *rx_end;
2904         unsigned int len = 0;
2905         u16 fc;
2906         u8 network_packet;
2907
2908         rx_status.mactime = le64_to_cpu(rx_start->timestamp);
2909         rx_status.freq =
2910                 ieee80211_frequency_to_channel(le16_to_cpu(rx_start->channel));
2911         rx_status.band = (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
2912                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
2913         rx_status.rate_idx =
2914                 iwl4965_hwrate_to_plcp_idx(le32_to_cpu(rx_start->rate_n_flags));
2915         if (rx_status.band == IEEE80211_BAND_5GHZ)
2916                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
2917
2918         rx_status.antenna = 0;
2919         rx_status.flag = 0;
2920
2921         if ((unlikely(rx_start->cfg_phy_cnt > 20))) {
2922                 IWL_DEBUG_DROP("dsp size out of range [0,20]: %d/n",
2923                                 rx_start->cfg_phy_cnt);
2924                 return;
2925         }
2926
2927         if (!include_phy) {
2928                 if (priv->last_phy_res[0])
2929                         rx_start = (struct iwl4965_rx_phy_res *)
2930                                 &priv->last_phy_res[1];
2931                 else
2932                         rx_start = NULL;
2933         }
2934
2935         if (!rx_start) {
2936                 IWL_ERROR("MPDU frame without a PHY data\n");
2937                 return;
2938         }
2939
2940         if (include_phy) {
2941                 header = (struct ieee80211_hdr *)((u8 *) & rx_start[1]
2942                                                   + rx_start->cfg_phy_cnt);
2943
2944                 len = le16_to_cpu(rx_start->byte_count);
2945                 rx_end = (__le32 *)(pkt->u.raw + rx_start->cfg_phy_cnt +
2946                                   sizeof(struct iwl4965_rx_phy_res) + len);
2947         } else {
2948                 struct iwl4965_rx_mpdu_res_start *amsdu =
2949                         (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
2950
2951                 header = (void *)(pkt->u.raw +
2952                         sizeof(struct iwl4965_rx_mpdu_res_start));
2953                 len = le16_to_cpu(amsdu->byte_count);
2954                 rx_end = (__le32 *) (pkt->u.raw +
2955                         sizeof(struct iwl4965_rx_mpdu_res_start) + len);
2956         }
2957
2958         if (!(*rx_end & RX_RES_STATUS_NO_CRC32_ERROR) ||
2959             !(*rx_end & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
2960                 IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
2961                                 le32_to_cpu(*rx_end));
2962                 return;
2963         }
2964
2965         priv->ucode_beacon_time = le32_to_cpu(rx_start->beacon_time_stamp);
2966
2967         /* Find max signal strength (dBm) among 3 antenna/receiver chains */
2968         rx_status.ssi = iwl4965_calc_rssi(priv, rx_start);
2969
2970         /* Meaningful noise values are available only from beacon statistics,
2971          *   which are gathered only when associated, and indicate noise
2972          *   only for the associated network channel ...
2973          * Ignore these noise values while scanning (other channels) */
2974         if (iwl_is_associated(priv) &&
2975             !test_bit(STATUS_SCANNING, &priv->status)) {
2976                 rx_status.noise = priv->last_rx_noise;
2977                 rx_status.signal = iwl4965_calc_sig_qual(rx_status.ssi,
2978                                                          rx_status.noise);
2979         } else {
2980                 rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2981                 rx_status.signal = iwl4965_calc_sig_qual(rx_status.ssi, 0);
2982         }
2983
2984         /* Reset beacon noise level if not associated. */
2985         if (!iwl_is_associated(priv))
2986                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
2987
2988         /* Set "1" to report good data frames in groups of 100 */
2989         /* FIXME: need to optimze the call: */
2990         iwl4965_dbg_report_frame(priv, pkt, header, 1);
2991
2992         IWL_DEBUG_STATS_LIMIT("Rssi %d, noise %d, qual %d, TSF %llu\n",
2993                               rx_status.ssi, rx_status.noise, rx_status.signal,
2994                               (unsigned long long)rx_status.mactime);
2995
2996
2997         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2998                 iwl4965_handle_data_packet(priv, 1, include_phy,
2999                                                  rxb, &rx_status);
3000                 return;
3001         }
3002
3003         network_packet = iwl4965_is_network_packet(priv, header);
3004         if (network_packet) {
3005                 priv->last_rx_rssi = rx_status.ssi;
3006                 priv->last_beacon_time =  priv->ucode_beacon_time;
3007                 priv->last_tsf = le64_to_cpu(rx_start->timestamp);
3008         }
3009
3010         fc = le16_to_cpu(header->frame_control);
3011         switch (fc & IEEE80211_FCTL_FTYPE) {
3012         case IEEE80211_FTYPE_MGMT:
3013                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3014                         iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
3015                                                 header->addr2);
3016                 iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &rx_status);
3017                 break;
3018
3019         case IEEE80211_FTYPE_CTL:
3020 #ifdef CONFIG_IWL4965_HT
3021                 switch (fc & IEEE80211_FCTL_STYPE) {
3022                 case IEEE80211_STYPE_BACK_REQ:
3023                         IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
3024                         iwl4965_handle_data_packet(priv, 0, include_phy,
3025                                                 rxb, &rx_status);
3026                         break;
3027                 default:
3028                         break;
3029                 }
3030 #endif
3031                 break;
3032
3033         case IEEE80211_FTYPE_DATA: {
3034                 DECLARE_MAC_BUF(mac1);
3035                 DECLARE_MAC_BUF(mac2);
3036                 DECLARE_MAC_BUF(mac3);
3037
3038                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3039                         iwl4965_update_ps_mode(priv, fc  & IEEE80211_FCTL_PM,
3040                                                 header->addr2);
3041
3042                 if (unlikely(!network_packet))
3043                         IWL_DEBUG_DROP("Dropping (non network): "
3044                                        "%s, %s, %s\n",
3045                                        print_mac(mac1, header->addr1),
3046                                        print_mac(mac2, header->addr2),
3047                                        print_mac(mac3, header->addr3));
3048                 else if (unlikely(iwl4965_is_duplicate_packet(priv, header)))
3049                         IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n",
3050                                        print_mac(mac1, header->addr1),
3051                                        print_mac(mac2, header->addr2),
3052                                        print_mac(mac3, header->addr3));
3053                 else
3054                         iwl4965_handle_data_packet(priv, 1, include_phy, rxb,
3055                                                    &rx_status);
3056                 break;
3057         }
3058         default:
3059                 break;
3060
3061         }
3062 }
3063
3064 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
3065  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
3066 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
3067                                     struct iwl_rx_mem_buffer *rxb)
3068 {
3069         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3070         priv->last_phy_res[0] = 1;
3071         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
3072                sizeof(struct iwl4965_rx_phy_res));
3073 }
3074 static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv,
3075                                            struct iwl_rx_mem_buffer *rxb)
3076
3077 {
3078 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
3079         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3080         struct iwl4965_missed_beacon_notif *missed_beacon;
3081
3082         missed_beacon = &pkt->u.missed_beacon;
3083         if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) {
3084                 IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n",
3085                     le32_to_cpu(missed_beacon->consequtive_missed_beacons),
3086                     le32_to_cpu(missed_beacon->total_missed_becons),
3087                     le32_to_cpu(missed_beacon->num_recvd_beacons),
3088                     le32_to_cpu(missed_beacon->num_expected_beacons));
3089                 if (!test_bit(STATUS_SCANNING, &priv->status))
3090                         iwl_init_sensitivity(priv);
3091         }
3092 #endif /*CONFIG_IWL4965_RUN_TIME_CALIB*/
3093 }
3094 #ifdef CONFIG_IWL4965_HT
3095
3096 /**
3097  * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
3098  */
3099 static void iwl4965_sta_modify_enable_tid_tx(struct iwl_priv *priv,
3100                                          int sta_id, int tid)
3101 {
3102         unsigned long flags;
3103
3104         /* Remove "disable" flag, to enable Tx for this TID */
3105         spin_lock_irqsave(&priv->sta_lock, flags);
3106         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
3107         priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
3108         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3109         spin_unlock_irqrestore(&priv->sta_lock, flags);
3110
3111         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3112 }
3113
3114 /**
3115  * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack
3116  *
3117  * Go through block-ack's bitmap of ACK'd frames, update driver's record of
3118  * ACK vs. not.  This gets sent to mac80211, then to rate scaling algo.
3119  */
3120 static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv,
3121                                                  struct iwl_ht_agg *agg,
3122                                                  struct iwl4965_compressed_ba_resp*
3123                                                  ba_resp)
3124
3125 {
3126         int i, sh, ack;
3127         u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl);
3128         u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
3129         u64 bitmap;
3130         int successes = 0;
3131         struct ieee80211_tx_status *tx_status;
3132
3133         if (unlikely(!agg->wait_for_ba))  {
3134                 IWL_ERROR("Received BA when not expected\n");
3135                 return -EINVAL;
3136         }
3137
3138         /* Mark that the expected block-ack response arrived */
3139         agg->wait_for_ba = 0;
3140         IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl);
3141
3142         /* Calculate shift to align block-ack bits with our Tx window bits */
3143         sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4);
3144         if (sh < 0) /* tbw something is wrong with indices */
3145                 sh += 0x100;
3146
3147         /* don't use 64-bit values for now */
3148         bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
3149
3150         if (agg->frame_count > (64 - sh)) {
3151                 IWL_DEBUG_TX_REPLY("more frames than bitmap size");
3152                 return -1;
3153         }
3154
3155         /* check for success or failure according to the
3156          * transmitted bitmap and block-ack bitmap */
3157         bitmap &= agg->bitmap;
3158
3159         /* For each frame attempted in aggregation,
3160          * update driver's record of tx frame's status. */
3161         for (i = 0; i < agg->frame_count ; i++) {
3162                 ack = bitmap & (1 << i);
3163                 successes += !!ack;
3164                 IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
3165                         ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff,
3166                         agg->start_idx + i);
3167         }
3168
3169         tx_status = &priv->txq[scd_flow].txb[agg->start_idx].status;
3170         tx_status->flags = IEEE80211_TX_STATUS_ACK;
3171         tx_status->flags |= IEEE80211_TX_STATUS_AMPDU;
3172         tx_status->ampdu_ack_map = successes;
3173         tx_status->ampdu_ack_len = agg->frame_count;
3174         iwl4965_hwrate_to_tx_control(priv, agg->rate_n_flags,
3175                                      &tx_status->control);
3176
3177         IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap);
3178
3179         return 0;
3180 }
3181
3182 /**
3183  * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration
3184  */
3185 static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv,
3186                                             u16 txq_id)
3187 {
3188         /* Simply stop the queue, but don't change any configuration;
3189          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
3190         iwl_write_prph(priv,
3191                 IWL49_SCD_QUEUE_STATUS_BITS(txq_id),
3192                 (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
3193                 (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
3194 }
3195
3196 /**
3197  * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
3198  * priv->lock must be held by the caller
3199  */
3200 static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
3201                                         u16 ssn_idx, u8 tx_fifo)
3202 {
3203         int ret = 0;
3204
3205         if (IWL_BACK_QUEUE_FIRST_ID > txq_id) {
3206                 IWL_WARNING("queue number too small: %d, must be > %d\n",
3207                                 txq_id, IWL_BACK_QUEUE_FIRST_ID);
3208                 return -EINVAL;
3209         }
3210
3211         ret = iwl_grab_nic_access(priv);
3212         if (ret)
3213                 return ret;
3214
3215         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
3216
3217         iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
3218
3219         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
3220         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
3221         /* supposes that ssn_idx is valid (!= 0xFFF) */
3222         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
3223
3224         iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
3225         iwl4965_txq_ctx_deactivate(priv, txq_id);
3226         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
3227
3228         iwl_release_nic_access(priv);
3229
3230         return 0;
3231 }
3232
3233 int iwl4965_check_empty_hw_queue(struct iwl_priv *priv, int sta_id,
3234                                          u8 tid, int txq_id)
3235 {
3236         struct iwl4965_queue *q = &priv->txq[txq_id].q;
3237         u8 *addr = priv->stations[sta_id].sta.sta.addr;
3238         struct iwl_tid_data *tid_data = &priv->stations[sta_id].tid[tid];
3239
3240         switch (priv->stations[sta_id].tid[tid].agg.state) {
3241         case IWL_EMPTYING_HW_QUEUE_DELBA:
3242                 /* We are reclaiming the last packet of the */
3243                 /* aggregated HW queue */
3244                 if (txq_id  == tid_data->agg.txq_id &&
3245                     q->read_ptr == q->write_ptr) {
3246                         u16 ssn = SEQ_TO_SN(tid_data->seq_number);
3247                         int tx_fifo = default_tid_to_tx_fifo[tid];
3248                         IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n");
3249                         iwl4965_tx_queue_agg_disable(priv, txq_id,
3250                                                      ssn, tx_fifo);
3251                         tid_data->agg.state = IWL_AGG_OFF;
3252                         ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, addr, tid);
3253                 }
3254                 break;
3255         case IWL_EMPTYING_HW_QUEUE_ADDBA:
3256                 /* We are reclaiming the last packet of the queue */
3257                 if (tid_data->tfds_in_queue == 0) {
3258                         IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n");
3259                         tid_data->agg.state = IWL_AGG_ON;
3260                         ieee80211_start_tx_ba_cb_irqsafe(priv->hw, addr, tid);
3261                 }
3262                 break;
3263         }
3264         return 0;
3265 }
3266
3267 /**
3268  * iwl4965_queue_dec_wrap - Decrement queue index, wrap back to end if needed
3269  * @index -- current index
3270  * @n_bd -- total number of entries in queue (s/b power of 2)
3271  */
3272 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
3273 {
3274         return (index == 0) ? n_bd - 1 : index - 1;
3275 }
3276
3277 /**
3278  * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
3279  *
3280  * Handles block-acknowledge notification from device, which reports success
3281  * of frames sent via aggregation.
3282  */
3283 static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
3284                                            struct iwl_rx_mem_buffer *rxb)
3285 {
3286         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
3287         struct iwl4965_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
3288         int index;
3289         struct iwl_tx_queue *txq = NULL;
3290         struct iwl_ht_agg *agg;
3291         DECLARE_MAC_BUF(mac);
3292
3293         /* "flow" corresponds to Tx queue */
3294         u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
3295
3296         /* "ssn" is start of block-ack Tx window, corresponds to index
3297          * (in Tx queue's circular buffer) of first TFD/frame in window */
3298         u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
3299
3300         if (scd_flow >= priv->hw_params.max_txq_num) {
3301                 IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
3302                 return;
3303         }
3304
3305         txq = &priv->txq[scd_flow];
3306         agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
3307
3308         /* Find index just before block-ack window */
3309         index = iwl4965_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
3310
3311         /* TODO: Need to get this copy more safely - now good for debug */
3312
3313         IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
3314                            "sta_id = %d\n",
3315                            agg->wait_for_ba,
3316                            print_mac(mac, (u8*) &ba_resp->sta_addr_lo32),
3317                            ba_resp->sta_id);
3318         IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
3319                            "%d, scd_ssn = %d\n",
3320                            ba_resp->tid,
3321                            ba_resp->seq_ctl,
3322                            (unsigned long long)le64_to_cpu(ba_resp->bitmap),
3323                            ba_resp->scd_flow,
3324                            ba_resp->scd_ssn);
3325         IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n",
3326                            agg->start_idx,
3327                            (unsigned long long)agg->bitmap);
3328
3329         /* Update driver's record of ACK vs. not for each frame in window */
3330         iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp);
3331
3332         /* Release all TFDs before the SSN, i.e. all TFDs in front of
3333          * block-ack window (we assume that they've been successfully
3334          * transmitted ... if not, it's too late anyway). */
3335         if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) {
3336                 /* calculate mac80211 ampdu sw queue to wake */
3337                 int ampdu_q =
3338                    scd_flow - IWL_BACK_QUEUE_FIRST_ID + priv->hw->queues;
3339                 int freed = iwl4965_tx_queue_reclaim(priv, scd_flow, index);
3340                 priv->stations[ba_resp->sta_id].
3341                         tid[ba_resp->tid].tfds_in_queue -= freed;
3342                 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3343                         priv->mac80211_registered &&
3344                         agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3345                         ieee80211_wake_queue(priv->hw, ampdu_q);
3346                 iwl4965_check_empty_hw_queue(priv, ba_resp->sta_id,
3347                         ba_resp->tid, scd_flow);
3348         }
3349 }
3350
3351 /**
3352  * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue
3353  */
3354 static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
3355                                         u16 txq_id)
3356 {
3357         u32 tbl_dw_addr;
3358         u32 tbl_dw;
3359         u16 scd_q2ratid;
3360
3361         scd_q2ratid = ra_tid & IWL49_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
3362
3363         tbl_dw_addr = priv->scd_base_addr +
3364                         IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
3365
3366         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
3367
3368         if (txq_id & 0x1)
3369                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
3370         else
3371                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
3372
3373         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
3374
3375         return 0;
3376 }
3377
3378
3379 /**
3380  * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue
3381  *
3382  * NOTE:  txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID,
3383  *        i.e. it must be one of the higher queues used for aggregation
3384  */
3385 static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id,
3386                                        int tx_fifo, int sta_id, int tid,
3387                                        u16 ssn_idx)
3388 {
3389         unsigned long flags;
3390         int rc;
3391         u16 ra_tid;
3392
3393         if (IWL_BACK_QUEUE_FIRST_ID > txq_id)
3394                 IWL_WARNING("queue number too small: %d, must be > %d\n",
3395                         txq_id, IWL_BACK_QUEUE_FIRST_ID);
3396
3397         ra_tid = BUILD_RAxTID(sta_id, tid);
3398
3399         /* Modify device's station table to Tx this TID */
3400         iwl4965_sta_modify_enable_tid_tx(priv, sta_id, tid);
3401
3402         spin_lock_irqsave(&priv->lock, flags);
3403         rc = iwl_grab_nic_access(priv);
3404         if (rc) {
3405                 spin_unlock_irqrestore(&priv->lock, flags);
3406                 return rc;
3407         }
3408
3409         /* Stop this Tx queue before configuring it */
3410         iwl4965_tx_queue_stop_scheduler(priv, txq_id);
3411
3412         /* Map receiver-address / traffic-ID to this queue */
3413         iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
3414
3415         /* Set this queue as a chain-building queue */
3416         iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id));
3417
3418         /* Place first TFD at index corresponding to start sequence number.
3419          * Assumes that ssn_idx is valid (!= 0xFFF) */
3420         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
3421         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
3422         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
3423
3424         /* Set up Tx window size and frame limit for this queue */
3425         iwl_write_targ_mem(priv,
3426                 priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id),
3427                 (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
3428                 IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
3429
3430         iwl_write_targ_mem(priv, priv->scd_base_addr +
3431                 IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
3432                 (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
3433                 & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
3434
3435         iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id));
3436
3437         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
3438         iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
3439
3440         iwl_release_nic_access(priv);
3441         spin_unlock_irqrestore(&priv->lock, flags);
3442
3443         return 0;
3444 }
3445
3446 #endif /* CONFIG_IWL4965_HT */
3447
3448 /**
3449  * iwl4965_add_station - Initialize a station's hardware rate table
3450  *
3451  * The uCode's station table contains a table of fallback rates
3452  * for automatic fallback during transmission.
3453  *
3454  * NOTE: This sets up a default set of values.  These will be replaced later
3455  *       if the driver's iwl-4965-rs rate scaling algorithm is used, instead of
3456  *       rc80211_simple.
3457  *
3458  * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
3459  *       calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
3460  *       which requires station table entry to exist).
3461  */
3462 void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
3463 {
3464         int i, r;
3465         struct iwl_link_quality_cmd link_cmd = {
3466                 .reserved1 = 0,
3467         };
3468         u16 rate_flags;
3469
3470         /* Set up the rate scaling to start at selected rate, fall back
3471          * all the way down to 1M in IEEE order, and then spin on 1M */
3472         if (is_ap)
3473                 r = IWL_RATE_54M_INDEX;
3474         else if (priv->band == IEEE80211_BAND_5GHZ)
3475                 r = IWL_RATE_6M_INDEX;
3476         else
3477                 r = IWL_RATE_1M_INDEX;
3478
3479         for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
3480                 rate_flags = 0;
3481                 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
3482                         rate_flags |= RATE_MCS_CCK_MSK;
3483
3484                 /* Use Tx antenna B only */
3485                 rate_flags |= RATE_MCS_ANT_B_MSK; /*FIXME:RS*/
3486
3487                 link_cmd.rs_table[i].rate_n_flags =
3488                         iwl4965_hw_set_rate_n_flags(iwl4965_rates[r].plcp, rate_flags);
3489                 r = iwl4965_get_prev_ieee_rate(r);
3490         }
3491
3492         link_cmd.general_params.single_stream_ant_msk = 2;
3493         link_cmd.general_params.dual_stream_ant_msk = 3;
3494         link_cmd.agg_params.agg_dis_start_th = 3;
3495         link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
3496
3497         /* Update the rate scaling for control frame Tx to AP */
3498         link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
3499
3500         iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
3501                                sizeof(link_cmd), &link_cmd, NULL);
3502 }
3503
3504 #ifdef CONFIG_IWL4965_HT
3505
3506 void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index,
3507                                 struct ieee80211_ht_info *sta_ht_inf)
3508 {
3509         __le32 sta_flags;
3510         u8 mimo_ps_mode;
3511
3512         if (!sta_ht_inf || !sta_ht_inf->ht_supported)
3513                 goto done;
3514
3515         mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2;
3516
3517         sta_flags = priv->stations[index].sta.station_flags;
3518
3519         sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
3520
3521         switch (mimo_ps_mode) {
3522         case WLAN_HT_CAP_MIMO_PS_STATIC:
3523                 sta_flags |= STA_FLG_MIMO_DIS_MSK;
3524                 break;
3525         case WLAN_HT_CAP_MIMO_PS_DYNAMIC:
3526                 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
3527                 break;
3528         case WLAN_HT_CAP_MIMO_PS_DISABLED:
3529                 break;
3530         default:
3531                 IWL_WARNING("Invalid MIMO PS mode %d", mimo_ps_mode);
3532                 break;
3533         }
3534
3535         sta_flags |= cpu_to_le32(
3536               (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
3537
3538         sta_flags |= cpu_to_le32(
3539               (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
3540
3541         if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
3542                 sta_flags |= STA_FLG_FAT_EN_MSK;
3543         else
3544                 sta_flags &= ~STA_FLG_FAT_EN_MSK;
3545
3546         priv->stations[index].sta.station_flags = sta_flags;
3547  done:
3548         return;
3549 }
3550
3551 static int iwl4965_rx_agg_start(struct iwl_priv *priv,
3552                                 const u8 *addr, int tid, u16 ssn)
3553 {
3554         unsigned long flags;
3555         int sta_id;
3556
3557         sta_id = iwl_find_station(priv, addr);
3558         if (sta_id == IWL_INVALID_STATION)
3559                 return -ENXIO;
3560
3561         spin_lock_irqsave(&priv->sta_lock, flags);
3562         priv->stations[sta_id].sta.station_flags_msk = 0;
3563         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
3564         priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
3565         priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
3566         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3567         spin_unlock_irqrestore(&priv->sta_lock, flags);
3568
3569         return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
3570                                         CMD_ASYNC);
3571 }
3572
3573 static int iwl4965_rx_agg_stop(struct iwl_priv *priv,
3574                                const u8 *addr, int tid)
3575 {
3576         unsigned long flags;
3577         int sta_id;
3578
3579         sta_id = iwl_find_station(priv, addr);
3580         if (sta_id == IWL_INVALID_STATION)
3581                 return -ENXIO;
3582
3583         spin_lock_irqsave(&priv->sta_lock, flags);
3584         priv->stations[sta_id].sta.station_flags_msk = 0;
3585         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
3586         priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
3587         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3588         spin_unlock_irqrestore(&priv->sta_lock, flags);
3589
3590         return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
3591                                         CMD_ASYNC);
3592 }
3593
3594 /*
3595  * Find first available (lowest unused) Tx Queue, mark it "active".
3596  * Called only when finding queue for aggregation.
3597  * Should never return anything < 7, because they should already
3598  * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6).
3599  */
3600 static int iwl4965_txq_ctx_activate_free(struct iwl_priv *priv)
3601 {
3602         int txq_id;
3603
3604         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
3605                 if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk))
3606                         return txq_id;
3607         return -1;
3608 }
3609
3610 static int iwl4965_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra,
3611                                 u16 tid, u16 *start_seq_num)
3612 {
3613         struct iwl_priv *priv = hw->priv;
3614         int sta_id;
3615         int tx_fifo;
3616         int txq_id;
3617         int ssn = -1;
3618         int ret = 0;
3619         unsigned long flags;
3620         struct iwl_tid_data *tid_data;
3621         DECLARE_MAC_BUF(mac);
3622
3623         if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
3624                 tx_fifo = default_tid_to_tx_fifo[tid];
3625         else
3626                 return -EINVAL;
3627
3628         IWL_WARNING("%s on ra = %s tid = %d\n",
3629                         __func__, print_mac(mac, ra), tid);
3630
3631         sta_id = iwl_find_station(priv, ra);
3632         if (sta_id == IWL_INVALID_STATION)
3633                 return -ENXIO;
3634
3635         if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) {
3636                 IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n");
3637                 return -ENXIO;
3638         }
3639
3640         txq_id = iwl4965_txq_ctx_activate_free(priv);
3641         if (txq_id == -1)
3642                 return -ENXIO;
3643
3644         spin_lock_irqsave(&priv->sta_lock, flags);
3645         tid_data = &priv->stations[sta_id].tid[tid];
3646         ssn = SEQ_TO_SN(tid_data->seq_number);
3647         tid_data->agg.txq_id = txq_id;
3648         spin_unlock_irqrestore(&priv->sta_lock, flags);
3649
3650         *start_seq_num = ssn;
3651         ret = iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo,
3652                                           sta_id, tid, ssn);
3653         if (ret)
3654                 return ret;
3655
3656         ret = 0;
3657         if (tid_data->tfds_in_queue == 0) {
3658                 printk(KERN_ERR "HW queue is empty\n");
3659                 tid_data->agg.state = IWL_AGG_ON;
3660                 ieee80211_start_tx_ba_cb_irqsafe(hw, ra, tid);
3661         } else {
3662                 IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n",
3663                                 tid_data->tfds_in_queue);
3664                 tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA;
3665         }
3666         return ret;
3667 }
3668
3669 static int iwl4965_tx_agg_stop(struct ieee80211_hw *hw, const u8 *ra, u16 tid)
3670 {
3671         struct iwl_priv *priv = hw->priv;
3672         int tx_fifo_id, txq_id, sta_id, ssn = -1;
3673         struct iwl_tid_data *tid_data;
3674         int ret, write_ptr, read_ptr;
3675         unsigned long flags;
3676         DECLARE_MAC_BUF(mac);
3677
3678         if (!ra) {
3679                 IWL_ERROR("ra = NULL\n");
3680                 return -EINVAL;
3681         }
3682
3683         if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
3684                 tx_fifo_id = default_tid_to_tx_fifo[tid];
3685         else
3686                 return -EINVAL;
3687
3688         sta_id = iwl_find_station(priv, ra);
3689
3690         if (sta_id == IWL_INVALID_STATION)
3691                 return -ENXIO;
3692
3693         if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON)
3694                 IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n");
3695
3696         tid_data = &priv->stations[sta_id].tid[tid];
3697         ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
3698         txq_id = tid_data->agg.txq_id;
3699         write_ptr = priv->txq[txq_id].q.write_ptr;
3700         read_ptr = priv->txq[txq_id].q.read_ptr;
3701
3702         /* The queue is not empty */
3703         if (write_ptr != read_ptr) {
3704                 IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n");
3705                 priv->stations[sta_id].tid[tid].agg.state =
3706                                 IWL_EMPTYING_HW_QUEUE_DELBA;
3707                 return 0;
3708         }
3709
3710         IWL_DEBUG_HT("HW queue is empty\n");
3711         priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
3712
3713         spin_lock_irqsave(&priv->lock, flags);
3714         ret = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id);
3715         spin_unlock_irqrestore(&priv->lock, flags);
3716
3717         if (ret)
3718                 return ret;
3719
3720         ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, ra, tid);
3721
3722         return 0;
3723 }
3724
3725 int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3726                              enum ieee80211_ampdu_mlme_action action,
3727                              const u8 *addr, u16 tid, u16 *ssn)
3728 {
3729         struct iwl_priv *priv = hw->priv;
3730         DECLARE_MAC_BUF(mac);
3731
3732         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3733                      print_mac(mac, addr), tid);
3734
3735         switch (action) {
3736         case IEEE80211_AMPDU_RX_START:
3737                 IWL_DEBUG_HT("start Rx\n");
3738                 return iwl4965_rx_agg_start(priv, addr, tid, *ssn);
3739         case IEEE80211_AMPDU_RX_STOP:
3740                 IWL_DEBUG_HT("stop Rx\n");
3741                 return iwl4965_rx_agg_stop(priv, addr, tid);
3742         case IEEE80211_AMPDU_TX_START:
3743                 IWL_DEBUG_HT("start Tx\n");
3744                 return iwl4965_tx_agg_start(hw, addr, tid, ssn);
3745         case IEEE80211_AMPDU_TX_STOP:
3746                 IWL_DEBUG_HT("stop Tx\n");
3747                 return iwl4965_tx_agg_stop(hw, addr, tid);
3748         default:
3749                 IWL_DEBUG_HT("unknown\n");
3750                 return -EINVAL;
3751                 break;
3752         }
3753         return 0;
3754 }
3755 #endif /* CONFIG_IWL4965_HT */
3756
3757
3758 static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
3759 {
3760         struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data;
3761         addsta->mode = cmd->mode;
3762         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
3763         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
3764         addsta->station_flags = cmd->station_flags;
3765         addsta->station_flags_msk = cmd->station_flags_msk;
3766         addsta->tid_disable_tx = cmd->tid_disable_tx;
3767         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
3768         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
3769         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
3770         addsta->reserved1 = __constant_cpu_to_le16(0);
3771         addsta->reserved2 = __constant_cpu_to_le32(0);
3772
3773         return (u16)sizeof(struct iwl4965_addsta_cmd);
3774 }
3775 /* Set up 4965-specific Rx frame reply handlers */
3776 static void iwl4965_rx_handler_setup(struct iwl_priv *priv)
3777 {
3778         /* Legacy Rx frames */
3779         priv->rx_handlers[REPLY_RX] = iwl4965_rx_reply_rx;
3780
3781         /* High-throughput (HT) Rx frames */
3782         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
3783         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
3784
3785         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
3786             iwl4965_rx_missed_beacon_notif;
3787
3788 #ifdef CONFIG_IWL4965_HT
3789         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba;
3790 #endif /* CONFIG_IWL4965_HT */
3791 }
3792
3793 void iwl4965_hw_setup_deferred_work(struct iwl_priv *priv)
3794 {
3795         INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
3796 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
3797         INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work);
3798 #endif
3799         init_timer(&priv->statistics_periodic);
3800         priv->statistics_periodic.data = (unsigned long)priv;
3801         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
3802 }
3803
3804 void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv)
3805 {
3806         del_timer_sync(&priv->statistics_periodic);
3807
3808         cancel_delayed_work(&priv->init_alive_start);
3809 }
3810
3811
3812 static struct iwl_hcmd_ops iwl4965_hcmd = {
3813         .rxon_assoc = iwl4965_send_rxon_assoc,
3814 };
3815
3816 static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = {
3817         .enqueue_hcmd = iwl4965_enqueue_hcmd,
3818         .build_addsta_hcmd = iwl4965_build_addsta_hcmd,
3819 #ifdef CONFIG_IWL4965_RUN_TIME_CALIB
3820         .chain_noise_reset = iwl4965_chain_noise_reset,
3821         .gain_computation = iwl4965_gain_computation,
3822 #endif
3823 };
3824
3825 static struct iwl_lib_ops iwl4965_lib = {
3826         .set_hw_params = iwl4965_hw_set_hw_params,
3827         .alloc_shared_mem = iwl4965_alloc_shared_mem,
3828         .free_shared_mem = iwl4965_free_shared_mem,
3829         .shared_mem_rx_idx = iwl4965_shared_mem_rx_idx,
3830         .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
3831         .disable_tx_fifo = iwl4965_disable_tx_fifo,
3832         .rx_handler_setup = iwl4965_rx_handler_setup,
3833         .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
3834         .alive_notify = iwl4965_alive_notify,
3835         .init_alive_start = iwl4965_init_alive_start,
3836         .load_ucode = iwl4965_load_bsm,
3837         .apm_ops = {
3838                 .init = iwl4965_apm_init,
3839                 .config = iwl4965_nic_config,
3840                 .set_pwr_src = iwl4965_set_pwr_src,
3841         },
3842         .eeprom_ops = {
3843                 .regulatory_bands = {
3844                         EEPROM_REGULATORY_BAND_1_CHANNELS,
3845                         EEPROM_REGULATORY_BAND_2_CHANNELS,
3846                         EEPROM_REGULATORY_BAND_3_CHANNELS,
3847                         EEPROM_REGULATORY_BAND_4_CHANNELS,
3848                         EEPROM_REGULATORY_BAND_5_CHANNELS,
3849                         EEPROM_4965_REGULATORY_BAND_24_FAT_CHANNELS,
3850                         EEPROM_4965_REGULATORY_BAND_52_FAT_CHANNELS
3851                 },
3852                 .verify_signature  = iwlcore_eeprom_verify_signature,
3853                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
3854                 .release_semaphore = iwlcore_eeprom_release_semaphore,
3855                 .check_version = iwl4965_eeprom_check_version,
3856                 .query_addr = iwlcore_eeprom_query_addr,
3857         },
3858         .radio_kill_sw = iwl4965_radio_kill_sw,
3859         .set_power = iwl4965_set_power,
3860         .update_chain_flags = iwl4965_update_chain_flags,
3861 };
3862
3863 static struct iwl_ops iwl4965_ops = {
3864         .lib = &iwl4965_lib,
3865         .hcmd = &iwl4965_hcmd,
3866         .utils = &iwl4965_hcmd_utils,
3867 };
3868
3869 struct iwl_cfg iwl4965_agn_cfg = {
3870         .name = "4965AGN",
3871         .fw_name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode",
3872         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
3873         .eeprom_size = IWL4965_EEPROM_IMG_SIZE,
3874         .ops = &iwl4965_ops,
3875         .mod_params = &iwl4965_mod_params,
3876 };
3877
3878 module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444);
3879 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
3880 module_param_named(disable, iwl4965_mod_params.disable, int, 0444);
3881 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
3882 module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, 0444);
3883 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])\n");
3884 module_param_named(debug, iwl4965_mod_params.debug, int, 0444);
3885 MODULE_PARM_DESC(debug, "debug output mask");
3886 module_param_named(
3887         disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444);
3888 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
3889
3890 module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444);
3891 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3892
3893 /* QoS */
3894 module_param_named(qos_enable, iwl4965_mod_params.enable_qos, int, 0444);
3895 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
3896 module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444);
3897 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3898