SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-5000.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007-2008 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  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  23  *
  24  *****************************************************************************/
  25
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/version.h>
  29 #include <linux/init.h>
  30 #include <linux/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <linux/delay.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/wireless.h>
  36 #include <net/mac80211.h>
  37 #include <linux/etherdevice.h>
  38 #include <asm/unaligned.h>
  39
  40 #include "iwl-eeprom.h"
  41 #include "iwl-dev.h"
  42 #include "iwl-core.h"
  43 #include "iwl-io.h"
  44 #include "iwl-sta.h"
  45 #include "iwl-helpers.h"
  46 #include "iwl-5000-hw.h"
  47
  48 #define IWL5000_UCODE_API  "-1"
  49
  50 static const u16 iwl5000_default_queue_to_tx_fifo[] = {
  51         IWL_TX_FIFO_AC3,
  52         IWL_TX_FIFO_AC2,
  53         IWL_TX_FIFO_AC1,
  54         IWL_TX_FIFO_AC0,
  55         IWL50_CMD_FIFO_NUM,
  56         IWL_TX_FIFO_HCCA_1,
  57         IWL_TX_FIFO_HCCA_2
  58 };
  59
  60 /* FIXME: same implementation as 4965 */
  61 static int iwl5000_apm_stop_master(struct iwl_priv *priv)
  62 {
  63         int ret = 0;
  64         unsigned long flags;
  65
  66         spin_lock_irqsave(&priv->lock, flags);
  67
  68         /* set stop master bit */
  69         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
  70
  71         ret = iwl_poll_bit(priv, CSR_RESET,
  72                                   CSR_RESET_REG_FLAG_MASTER_DISABLED,
  73                                   CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
  74         if (ret < 0)
  75                 goto out;
  76
  77 out:
  78         spin_unlock_irqrestore(&priv->lock, flags);
  79         IWL_DEBUG_INFO("stop master\n");
  80
  81         return ret;
  82 }
  83
  84
  85 static int iwl5000_apm_init(struct iwl_priv *priv)
  86 {
  87         int ret = 0;
  88
  89         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
  90                     CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
  91
  92         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
  93         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
  94                     CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
  95
  96         iwl_set_bit(priv, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL);
  97
  98         /* set "initialization complete" bit to move adapter
  99          * D0U* --> D0A* state */
 100         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 101
 102         /* wait for clock stabilization */
 103         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
 104                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 105                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 106         if (ret < 0) {
 107                 IWL_DEBUG_INFO("Failed to init the card\n");
 108                 return ret;
 109         }
 110
 111         ret = iwl_grab_nic_access(priv);
 112         if (ret)
 113                 return ret;
 114
 115         /* enable DMA */
 116         iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
 117
 118         udelay(20);
 119
 120         /* disable L1-Active */
 121         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 122                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 123
 124         iwl_release_nic_access(priv);
 125
 126         return ret;
 127 }
 128
 129 /* FIXME: this is indentical to 4965 */
 130 static void iwl5000_apm_stop(struct iwl_priv *priv)
 131 {
 132         unsigned long flags;
 133
 134         iwl5000_apm_stop_master(priv);
 135
 136         spin_lock_irqsave(&priv->lock, flags);
 137
 138         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 139
 140         udelay(10);
 141
 142         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 143
 144         spin_unlock_irqrestore(&priv->lock, flags);
 145 }
 146
 147
 148 static int iwl5000_apm_reset(struct iwl_priv *priv)
 149 {
 150         int ret = 0;
 151         unsigned long flags;
 152
 153         iwl5000_apm_stop_master(priv);
 154
 155         spin_lock_irqsave(&priv->lock, flags);
 156
 157         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
 158
 159         udelay(10);
 160
 161
 162         /* FIXME: put here L1A -L0S w/a */
 163
 164         iwl_set_bit(priv, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL);
 165
 166         /* set "initialization complete" bit to move adapter
 167          * D0U* --> D0A* state */
 168         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 169
 170         /* wait for clock stabilization */
 171         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
 172                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 173                           CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
 174         if (ret < 0) {
 175                 IWL_DEBUG_INFO("Failed to init the card\n");
 176                 goto out;
 177         }
 178
 179         ret = iwl_grab_nic_access(priv);
 180         if (ret)
 181                 goto out;
 182
 183         /* enable DMA */
 184         iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT);
 185
 186         udelay(20);
 187
 188         /* disable L1-Active */
 189         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
 190                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 191
 192         iwl_release_nic_access(priv);
 193
 194 out:
 195         spin_unlock_irqrestore(&priv->lock, flags);
 196
 197         return ret;
 198 }
 199
 200
 201 static void iwl5000_nic_config(struct iwl_priv *priv)
 202 {
 203         unsigned long flags;
 204         u16 radio_cfg;
 205         u8 val_link;
 206
 207         spin_lock_irqsave(&priv->lock, flags);
 208
 209         pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link);
 210
 211         /* L1 is enabled by BIOS */
 212         if ((val_link & PCI_LINK_VAL_L1_EN) == PCI_LINK_VAL_L1_EN)
 213                 /* diable L0S disabled L1A enabled */
 214                 iwl_set_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
 215         else
 216                 /* L0S enabled L1A disabled */
 217                 iwl_clear_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED);
 218
 219         radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG);
 220
 221         /* write radio config values to register */
 222         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) < EEPROM_5000_RF_CFG_TYPE_MAX)
 223                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 224                             EEPROM_RF_CFG_TYPE_MSK(radio_cfg) |
 225                             EEPROM_RF_CFG_STEP_MSK(radio_cfg) |
 226                             EEPROM_RF_CFG_DASH_MSK(radio_cfg));
 227
 228         /* set CSR_HW_CONFIG_REG for uCode use */
 229         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
 230                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
 231                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 232
 233         spin_unlock_irqrestore(&priv->lock, flags);
 234 }
 235
 236
 237
 238 /*
 239  * EEPROM
 240  */
 241 static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address)
 242 {
 243         u16 offset = 0;
 244
 245         if ((address & INDIRECT_ADDRESS) == 0)
 246                 return address;
 247
 248         switch (address & INDIRECT_TYPE_MSK) {
 249         case INDIRECT_HOST:
 250                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_HOST);
 251                 break;
 252         case INDIRECT_GENERAL:
 253                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_GENERAL);
 254                 break;
 255         case INDIRECT_REGULATORY:
 256                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_REGULATORY);
 257                 break;
 258         case INDIRECT_CALIBRATION:
 259                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_CALIBRATION);
 260                 break;
 261         case INDIRECT_PROCESS_ADJST:
 262                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_PROCESS_ADJST);
 263                 break;
 264         case INDIRECT_OTHERS:
 265                 offset = iwl_eeprom_query16(priv, EEPROM_5000_LINK_OTHERS);
 266                 break;
 267         default:
 268                 IWL_ERROR("illegal indirect type: 0x%X\n",
 269                 address & INDIRECT_TYPE_MSK);
 270                 break;
 271         }
 272
 273         /* translate the offset from words to byte */
 274         return (address & ADDRESS_MSK) + (offset << 1);
 275 }
 276
 277 static int iwl5000_eeprom_check_version(struct iwl_priv *priv)
 278 {
 279         u16 eeprom_ver;
 280         struct iwl_eeprom_calib_hdr {
 281                 u8 version;
 282                 u8 pa_type;
 283                 u16 voltage;
 284         } *hdr;
 285
 286         eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
 287
 288         hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv,
 289                                                         EEPROM_5000_CALIB_ALL);
 290
 291         if (eeprom_ver < EEPROM_5000_EEPROM_VERSION ||
 292             hdr->version < EEPROM_5000_TX_POWER_VERSION)
 293                 goto err;
 294
 295         return 0;
 296 err:
 297         IWL_ERROR("Unsuported EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
 298                   eeprom_ver, EEPROM_5000_EEPROM_VERSION,
 299                   hdr->version, EEPROM_5000_TX_POWER_VERSION);
 300         return -EINVAL;
 301
 302 }
 303
 304 static void iwl5000_gain_computation(struct iwl_priv *priv,
 305                 u32 average_noise[NUM_RX_CHAINS],
 306                 u16 min_average_noise_antenna_i,
 307                 u32 min_average_noise)
 308 {
 309         int i;
 310         s32 delta_g;
 311         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 312
 313         /* Find Gain Code for the antennas B and C */
 314         for (i = 1; i < NUM_RX_CHAINS; i++) {
 315                 if ((data->disconn_array[i])) {
 316                         data->delta_gain_code[i] = 0;
 317                         continue;
 318                 }
 319                 delta_g = (1000 * ((s32)average_noise[0] -
 320                         (s32)average_noise[i])) / 1500;
 321                 /* bound gain by 2 bits value max, 3rd bit is sign */
 322                 data->delta_gain_code[i] =
 323                         min(abs(delta_g), CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 324
 325                 if (delta_g < 0)
 326                         /* set negative sign */
 327                         data->delta_gain_code[i] |= (1 << 2);
 328         }
 329
 330         IWL_DEBUG_CALIB("Delta gains: ANT_B = %d  ANT_C = %d\n",
 331                         data->delta_gain_code[1], data->delta_gain_code[2]);
 332
 333         if (!data->radio_write) {
 334                 struct iwl5000_calibration_chain_noise_gain_cmd cmd;
 335                 memset(&cmd, 0, sizeof(cmd));
 336
 337                 cmd.op_code = IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD;
 338                 cmd.delta_gain_1 = data->delta_gain_code[1];
 339                 cmd.delta_gain_2 = data->delta_gain_code[2];
 340                 iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD,
 341                         sizeof(cmd), &cmd, NULL);
 342
 343                 data->radio_write = 1;
 344                 data->state = IWL_CHAIN_NOISE_CALIBRATED;
 345         }
 346
 347         data->chain_noise_a = 0;
 348         data->chain_noise_b = 0;
 349         data->chain_noise_c = 0;
 350         data->chain_signal_a = 0;
 351         data->chain_signal_b = 0;
 352         data->chain_signal_c = 0;
 353         data->beacon_count = 0;
 354 }
 355
 356 static void iwl5000_chain_noise_reset(struct iwl_priv *priv)
 357 {
 358         struct iwl_chain_noise_data *data = &priv->chain_noise_data;
 359
 360         if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
 361                 struct iwl5000_calibration_chain_noise_reset_cmd cmd;
 362
 363                 memset(&cmd, 0, sizeof(cmd));
 364                 cmd.op_code = IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD;
 365                 if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 366                         sizeof(cmd), &cmd))
 367                         IWL_ERROR("Could not send REPLY_PHY_CALIBRATION_CMD\n");
 368                 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
 369                 IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
 370         }
 371 }
 372
 373 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
 374         .min_nrg_cck = 95,
 375         .max_nrg_cck = 0,
 376         .auto_corr_min_ofdm = 90,
 377         .auto_corr_min_ofdm_mrc = 170,
 378         .auto_corr_min_ofdm_x1 = 120,
 379         .auto_corr_min_ofdm_mrc_x1 = 240,
 380
 381         .auto_corr_max_ofdm = 120,
 382         .auto_corr_max_ofdm_mrc = 210,
 383         .auto_corr_max_ofdm_x1 = 155,
 384         .auto_corr_max_ofdm_mrc_x1 = 290,
 385
 386         .auto_corr_min_cck = 125,
 387         .auto_corr_max_cck = 200,
 388         .auto_corr_min_cck_mrc = 170,
 389         .auto_corr_max_cck_mrc = 400,
 390         .nrg_th_cck = 95,
 391         .nrg_th_ofdm = 95,
 392 };
 393
 394 static const u8 *iwl5000_eeprom_query_addr(const struct iwl_priv *priv,
 395                                            size_t offset)
 396 {
 397         u32 address = eeprom_indirect_address(priv, offset);
 398         BUG_ON(address >= priv->cfg->eeprom_size);
 399         return &priv->eeprom[address];
 400 }
 401
 402 /*
 403  *  Calibration
 404  */
 405 static int iwl5000_send_Xtal_calib(struct iwl_priv *priv)
 406 {
 407         u16 *xtal_calib = (u16 *)iwl_eeprom_query_addr(priv, EEPROM_5000_XTAL);
 408
 409         struct iwl5000_calibration cal_cmd = {
 410                 .op_code = IWL5000_PHY_CALIBRATE_CRYSTAL_FRQ_CMD,
 411                 .data = {
 412                         (u8)xtal_calib[0],
 413                         (u8)xtal_calib[1],
 414                 }
 415         };
 416
 417         return iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
 418                                 sizeof(cal_cmd), &cal_cmd);
 419 }
 420
 421 static int iwl5000_send_calib_results(struct iwl_priv *priv)
 422 {
 423         int ret = 0;
 424
 425         struct iwl_host_cmd hcmd = {
 426                 .id = REPLY_PHY_CALIBRATION_CMD,
 427                 .meta.flags = CMD_SIZE_HUGE,
 428         };
 429
 430         if (priv->calib_results.lo_res) {
 431                 hcmd.len = priv->calib_results.lo_res_len;
 432                 hcmd.data = priv->calib_results.lo_res;
 433                 ret = iwl_send_cmd_sync(priv, &hcmd);
 434
 435                 if (ret)
 436                         goto err;
 437         }
 438
 439         if (priv->calib_results.tx_iq_res) {
 440                 hcmd.len = priv->calib_results.tx_iq_res_len;
 441                 hcmd.data = priv->calib_results.tx_iq_res;
 442                 ret = iwl_send_cmd_sync(priv, &hcmd);
 443
 444                 if (ret)
 445                         goto err;
 446         }
 447
 448         if (priv->calib_results.tx_iq_perd_res) {
 449                 hcmd.len = priv->calib_results.tx_iq_perd_res_len;
 450                 hcmd.data = priv->calib_results.tx_iq_perd_res;
 451                 ret = iwl_send_cmd_sync(priv, &hcmd);
 452
 453                 if (ret)
 454                         goto err;
 455         }
 456
 457         return 0;
 458 err:
 459         IWL_ERROR("Error %d\n", ret);
 460         return ret;
 461 }
 462
 463 static int iwl5000_send_calib_cfg(struct iwl_priv *priv)
 464 {
 465         struct iwl5000_calib_cfg_cmd calib_cfg_cmd;
 466         struct iwl_host_cmd cmd = {
 467                 .id = CALIBRATION_CFG_CMD,
 468                 .len = sizeof(struct iwl5000_calib_cfg_cmd),
 469                 .data = &calib_cfg_cmd,
 470         };
 471
 472         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 473         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
 474         calib_cfg_cmd.ucd_calib_cfg.once.start = IWL_CALIB_INIT_CFG_ALL;
 475         calib_cfg_cmd.ucd_calib_cfg.once.send_res = IWL_CALIB_INIT_CFG_ALL;
 476         calib_cfg_cmd.ucd_calib_cfg.flags = IWL_CALIB_INIT_CFG_ALL;
 477
 478         return iwl_send_cmd(priv, &cmd);
 479 }
 480
 481 static void iwl5000_rx_calib_result(struct iwl_priv *priv,
 482                              struct iwl_rx_mem_buffer *rxb)
 483 {
 484         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 485         struct iwl5000_calib_hdr *hdr = (struct iwl5000_calib_hdr *)pkt->u.raw;
 486         int len = le32_to_cpu(pkt->len) & FH_RSCSR_FRAME_SIZE_MSK;
 487
 488         iwl_free_calib_results(priv);
 489
 490         /* reduce the size of the length field itself */
 491         len -= 4;
 492
 493         switch (hdr->op_code) {
 494         case IWL5000_PHY_CALIBRATE_LO_CMD:
 495                 priv->calib_results.lo_res = kzalloc(len, GFP_ATOMIC);
 496                 priv->calib_results.lo_res_len = len;
 497                 memcpy(priv->calib_results.lo_res, pkt->u.raw, len);
 498                 break;
 499         case IWL5000_PHY_CALIBRATE_TX_IQ_CMD:
 500                 priv->calib_results.tx_iq_res = kzalloc(len, GFP_ATOMIC);
 501                 priv->calib_results.tx_iq_res_len = len;
 502                 memcpy(priv->calib_results.tx_iq_res, pkt->u.raw, len);
 503                 break;
 504         case IWL5000_PHY_CALIBRATE_TX_IQ_PERD_CMD:
 505                 priv->calib_results.tx_iq_perd_res = kzalloc(len, GFP_ATOMIC);
 506                 priv->calib_results.tx_iq_perd_res_len = len;
 507                 memcpy(priv->calib_results.tx_iq_perd_res, pkt->u.raw, len);
 508                 break;
 509         default:
 510                 IWL_ERROR("Unknown calibration notification %d\n",
 511                           hdr->op_code);
 512                 return;
 513         }
 514 }
 515
 516 static void iwl5000_rx_calib_complete(struct iwl_priv *priv,
 517                                struct iwl_rx_mem_buffer *rxb)
 518 {
 519         IWL_DEBUG_INFO("Init. calibration is completed, restarting fw.\n");
 520         queue_work(priv->workqueue, &priv->restart);
 521 }
 522
 523 /*
 524  * ucode
 525  */
 526 static int iwl5000_load_section(struct iwl_priv *priv,
 527                                 struct fw_desc *image,
 528                                 u32 dst_addr)
 529 {
 530         int ret = 0;
 531         unsigned long flags;
 532
 533         dma_addr_t phy_addr = image->p_addr;
 534         u32 byte_cnt = image->len;
 535
 536         spin_lock_irqsave(&priv->lock, flags);
 537         ret = iwl_grab_nic_access(priv);
 538         if (ret) {
 539                 spin_unlock_irqrestore(&priv->lock, flags);
 540                 return ret;
 541         }
 542
 543         iwl_write_direct32(priv,
 544                 FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
 545                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
 546
 547         iwl_write_direct32(priv,
 548                 FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL), dst_addr);
 549
 550         iwl_write_direct32(priv,
 551                 FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
 552                 phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
 553
 554         /* FIME: write the MSB of the phy_addr in CTRL1
 555          * iwl_write_direct32(priv,
 556                 IWL_FH_TFDIB_CTRL1_REG(IWL_FH_SRVC_CHNL),
 557                 ((phy_addr & MSB_MSK)
 558                         << FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_count);
 559          */
 560         iwl_write_direct32(priv,
 561                 FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL), byte_cnt);
 562         iwl_write_direct32(priv,
 563                 FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
 564                 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM |
 565                 1 << FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX |
 566                 FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
 567
 568         iwl_write_direct32(priv,
 569                 FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
 570                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE       |
 571                 FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE_VAL |
 572                 FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD);
 573
 574         iwl_release_nic_access(priv);
 575         spin_unlock_irqrestore(&priv->lock, flags);
 576         return 0;
 577 }
 578
 579 static int iwl5000_load_given_ucode(struct iwl_priv *priv,
 580                 struct fw_desc *inst_image,
 581                 struct fw_desc *data_image)
 582 {
 583         int ret = 0;
 584
 585         ret = iwl5000_load_section(
 586                 priv, inst_image, RTC_INST_LOWER_BOUND);
 587         if (ret)
 588                 return ret;
 589
 590         IWL_DEBUG_INFO("INST uCode section being loaded...\n");
 591         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 592                                 priv->ucode_write_complete, 5 * HZ);
 593         if (ret == -ERESTARTSYS) {
 594                 IWL_ERROR("Could not load the INST uCode section due "
 595                         "to interrupt\n");
 596                 return ret;
 597         }
 598         if (!ret) {
 599                 IWL_ERROR("Could not load the INST uCode section\n");
 600                 return -ETIMEDOUT;
 601         }
 602
 603         priv->ucode_write_complete = 0;
 604
 605         ret = iwl5000_load_section(
 606                 priv, data_image, RTC_DATA_LOWER_BOUND);
 607         if (ret)
 608                 return ret;
 609
 610         IWL_DEBUG_INFO("DATA uCode section being loaded...\n");
 611
 612         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
 613                                 priv->ucode_write_complete, 5 * HZ);
 614         if (ret == -ERESTARTSYS) {
 615                 IWL_ERROR("Could not load the INST uCode section due "
 616                         "to interrupt\n");
 617                 return ret;
 618         } else if (!ret) {
 619                 IWL_ERROR("Could not load the DATA uCode section\n");
 620                 return -ETIMEDOUT;
 621         } else
 622                 ret = 0;
 623
 624         priv->ucode_write_complete = 0;
 625
 626         return ret;
 627 }
 628
 629 static int iwl5000_load_ucode(struct iwl_priv *priv)
 630 {
 631         int ret = 0;
 632
 633         /* check whether init ucode should be loaded, or rather runtime ucode */
 634         if (priv->ucode_init.len && (priv->ucode_type == UCODE_NONE)) {
 635                 IWL_DEBUG_INFO("Init ucode found. Loading init ucode...\n");
 636                 ret = iwl5000_load_given_ucode(priv,
 637                         &priv->ucode_init, &priv->ucode_init_data);
 638                 if (!ret) {
 639                         IWL_DEBUG_INFO("Init ucode load complete.\n");
 640                         priv->ucode_type = UCODE_INIT;
 641                 }
 642         } else {
 643                 IWL_DEBUG_INFO("Init ucode not found, or already loaded. "
 644                         "Loading runtime ucode...\n");
 645                 ret = iwl5000_load_given_ucode(priv,
 646                         &priv->ucode_code, &priv->ucode_data);
 647                 if (!ret) {
 648                         IWL_DEBUG_INFO("Runtime ucode load complete.\n");
 649                         priv->ucode_type = UCODE_RT;
 650                 }
 651         }
 652
 653         return ret;
 654 }
 655
 656 static void iwl5000_init_alive_start(struct iwl_priv *priv)
 657 {
 658         int ret = 0;
 659
 660         /* Check alive response for "valid" sign from uCode */
 661         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
 662                 /* We had an error bringing up the hardware, so take it
 663                  * all the way back down so we can try again */
 664                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
 665                 goto restart;
 666         }
 667
 668         /* initialize uCode was loaded... verify inst image.
 669          * This is a paranoid check, because we would not have gotten the
 670          * "initialize" alive if code weren't properly loaded.  */
 671         if (iwl_verify_ucode(priv)) {
 672                 /* Runtime instruction load was bad;
 673                  * take it all the way back down so we can try again */
 674                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
 675                 goto restart;
 676         }
 677
 678         iwl_clear_stations_table(priv);
 679         ret = priv->cfg->ops->lib->alive_notify(priv);
 680         if (ret) {
 681                 IWL_WARNING("Could not complete ALIVE transition: %d\n", ret);
 682                 goto restart;
 683         }
 684
 685         iwl5000_send_calib_cfg(priv);
 686         return;
 687
 688 restart:
 689         /* real restart (first load init_ucode) */
 690         queue_work(priv->workqueue, &priv->restart);
 691 }
 692
 693 static void iwl5000_set_wr_ptrs(struct iwl_priv *priv,
 694                                 int txq_id, u32 index)
 695 {
 696         iwl_write_direct32(priv, HBUS_TARG_WRPTR,
 697                         (index & 0xff) | (txq_id << 8));
 698         iwl_write_prph(priv, IWL50_SCD_QUEUE_RDPTR(txq_id), index);
 699 }
 700
 701 static void iwl5000_tx_queue_set_status(struct iwl_priv *priv,
 702                                         struct iwl_tx_queue *txq,
 703                                         int tx_fifo_id, int scd_retry)
 704 {
 705         int txq_id = txq->q.id;
 706         int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0;
 707
 708         iwl_write_prph(priv, IWL50_SCD_QUEUE_STATUS_BITS(txq_id),
 709                         (active << IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE) |
 710                         (tx_fifo_id << IWL50_SCD_QUEUE_STTS_REG_POS_TXF) |
 711                         (1 << IWL50_SCD_QUEUE_STTS_REG_POS_WSL) |
 712                         IWL50_SCD_QUEUE_STTS_REG_MSK);
 713
 714         txq->sched_retry = scd_retry;
 715
 716         IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
 717                        active ? "Activate" : "Deactivate",
 718                        scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
 719 }
 720
 721 static int iwl5000_send_wimax_coex(struct iwl_priv *priv)
 722 {
 723         struct iwl_wimax_coex_cmd coex_cmd;
 724
 725         memset(&coex_cmd, 0, sizeof(coex_cmd));
 726
 727         return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
 728                                 sizeof(coex_cmd), &coex_cmd);
 729 }
 730
 731 static int iwl5000_alive_notify(struct iwl_priv *priv)
 732 {
 733         u32 a;
 734         int i = 0;
 735         unsigned long flags;
 736         int ret;
 737
 738         spin_lock_irqsave(&priv->lock, flags);
 739
 740         ret = iwl_grab_nic_access(priv);
 741         if (ret) {
 742                 spin_unlock_irqrestore(&priv->lock, flags);
 743                 return ret;
 744         }
 745
 746         priv->scd_base_addr = iwl_read_prph(priv, IWL50_SCD_SRAM_BASE_ADDR);
 747         a = priv->scd_base_addr + IWL50_SCD_CONTEXT_DATA_OFFSET;
 748         for (; a < priv->scd_base_addr + IWL50_SCD_TX_STTS_BITMAP_OFFSET;
 749                 a += 4)
 750                 iwl_write_targ_mem(priv, a, 0);
 751         for (; a < priv->scd_base_addr + IWL50_SCD_TRANSLATE_TBL_OFFSET;
 752                 a += 4)
 753                 iwl_write_targ_mem(priv, a, 0);
 754         for (; a < sizeof(u16) * priv->hw_params.max_txq_num; a += 4)
 755                 iwl_write_targ_mem(priv, a, 0);
 756
 757         iwl_write_prph(priv, IWL50_SCD_DRAM_BASE_ADDR,
 758                 (priv->shared_phys +
 759                  offsetof(struct iwl5000_shared, queues_byte_cnt_tbls)) >> 10);
 760         iwl_write_prph(priv, IWL50_SCD_QUEUECHAIN_SEL,
 761                 IWL50_SCD_QUEUECHAIN_SEL_ALL(
 762                         priv->hw_params.max_txq_num));
 763         iwl_write_prph(priv, IWL50_SCD_AGGR_SEL, 0);
 764
 765         /* initiate the queues */
 766         for (i = 0; i < priv->hw_params.max_txq_num; i++) {
 767                 iwl_write_prph(priv, IWL50_SCD_QUEUE_RDPTR(i), 0);
 768                 iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
 769                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 770                                 IWL50_SCD_CONTEXT_QUEUE_OFFSET(i), 0);
 771                 iwl_write_targ_mem(priv, priv->scd_base_addr +
 772                                 IWL50_SCD_CONTEXT_QUEUE_OFFSET(i) +
 773                                 sizeof(u32),
 774                                 ((SCD_WIN_SIZE <<
 775                                 IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) &
 776                                 IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) |
 777                                 ((SCD_FRAME_LIMIT <<
 778                                 IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
 779                                 IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK));
 780         }
 781
 782         iwl_write_prph(priv, IWL50_SCD_INTERRUPT_MASK,
 783                         IWL_MASK(0, priv->hw_params.max_txq_num));
 784
 785         /* Activate all Tx DMA/FIFO channels */
 786         priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 7));
 787
 788         iwl5000_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
 789         /* map qos queues to fifos one-to-one */
 790         for (i = 0; i < ARRAY_SIZE(iwl5000_default_queue_to_tx_fifo); i++) {
 791                 int ac = iwl5000_default_queue_to_tx_fifo[i];
 792                 iwl_txq_ctx_activate(priv, i);
 793                 iwl5000_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
 794         }
 795         /* TODO - need to initialize those FIFOs inside the loop above,
 796          * not only mark them as active */
 797         iwl_txq_ctx_activate(priv, 4);
 798         iwl_txq_ctx_activate(priv, 7);
 799         iwl_txq_ctx_activate(priv, 8);
 800         iwl_txq_ctx_activate(priv, 9);
 801
 802         iwl_release_nic_access(priv);
 803         spin_unlock_irqrestore(&priv->lock, flags);
 804
 805
 806         iwl5000_send_wimax_coex(priv);
 807
 808         iwl5000_send_Xtal_calib(priv);
 809
 810         if (priv->ucode_type == UCODE_RT)
 811                 iwl5000_send_calib_results(priv);
 812
 813         return 0;
 814 }
 815
 816 static int iwl5000_hw_set_hw_params(struct iwl_priv *priv)
 817 {
 818         if ((priv->cfg->mod_params->num_of_queues > IWL50_NUM_QUEUES) ||
 819             (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) {
 820                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
 821                           IWL_MIN_NUM_QUEUES, IWL50_NUM_QUEUES);
 822                 return -EINVAL;
 823         }
 824
 825         priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
 826         priv->hw_params.first_ampdu_q = IWL50_FIRST_AMPDU_QUEUE;
 827         priv->hw_params.max_stations = IWL5000_STATION_COUNT;
 828         priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
 829         priv->hw_params.max_data_size = IWL50_RTC_DATA_SIZE;
 830         priv->hw_params.max_inst_size = IWL50_RTC_INST_SIZE;
 831         priv->hw_params.max_bsm_size = 0;
 832         priv->hw_params.fat_channel =  BIT(IEEE80211_BAND_2GHZ) |
 833                                         BIT(IEEE80211_BAND_5GHZ);
 834         priv->hw_params.sens = &iwl5000_sensitivity;
 835
 836         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
 837         case CSR_HW_REV_TYPE_5100:
 838         case CSR_HW_REV_TYPE_5150:
 839                 priv->hw_params.tx_chains_num = 1;
 840                 priv->hw_params.rx_chains_num = 2;
 841                 /* FIXME: move to ANT_A, ANT_B, ANT_C enum */
 842                 priv->hw_params.valid_tx_ant = ANT_A;
 843                 priv->hw_params.valid_rx_ant = ANT_AB;
 844                 break;
 845         case CSR_HW_REV_TYPE_5300:
 846         case CSR_HW_REV_TYPE_5350:
 847                 priv->hw_params.tx_chains_num = 3;
 848                 priv->hw_params.rx_chains_num = 3;
 849                 priv->hw_params.valid_tx_ant = ANT_ABC;
 850                 priv->hw_params.valid_rx_ant = ANT_ABC;
 851                 break;
 852         }
 853
 854         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
 855         case CSR_HW_REV_TYPE_5100:
 856         case CSR_HW_REV_TYPE_5300:
 857                 /* 5X00 wants in Celsius */
 858                 priv->hw_params.ct_kill_threshold = CT_KILL_THRESHOLD;
 859                 break;
 860         case CSR_HW_REV_TYPE_5150:
 861         case CSR_HW_REV_TYPE_5350:
 862                 /* 5X50 wants in Kelvin */
 863                 priv->hw_params.ct_kill_threshold =
 864                                 CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD);
 865                 break;
 866         }
 867
 868         return 0;
 869 }
 870
 871 static int iwl5000_alloc_shared_mem(struct iwl_priv *priv)
 872 {
 873         priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
 874                                         sizeof(struct iwl5000_shared),
 875                                         &priv->shared_phys);
 876         if (!priv->shared_virt)
 877                 return -ENOMEM;
 878
 879         memset(priv->shared_virt, 0, sizeof(struct iwl5000_shared));
 880
 881         priv->rb_closed_offset = offsetof(struct iwl5000_shared, rb_closed);
 882
 883         return 0;
 884 }
 885
 886 static void iwl5000_free_shared_mem(struct iwl_priv *priv)
 887 {
 888         if (priv->shared_virt)
 889                 pci_free_consistent(priv->pci_dev,
 890                                     sizeof(struct iwl5000_shared),
 891                                     priv->shared_virt,
 892                                     priv->shared_phys);
 893 }
 894
 895 static int iwl5000_shared_mem_rx_idx(struct iwl_priv *priv)
 896 {
 897         struct iwl5000_shared *s = priv->shared_virt;
 898         return le32_to_cpu(s->rb_closed) & 0xFFF;
 899 }
 900
 901 /**
 902  * iwl5000_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
 903  */
 904 static void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
 905                                             struct iwl_tx_queue *txq,
 906                                             u16 byte_cnt)
 907 {
 908         struct iwl5000_shared *shared_data = priv->shared_virt;
 909         int txq_id = txq->q.id;
 910         u8 sec_ctl = 0;
 911         u8 sta = 0;
 912         int len;
 913
 914         len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
 915
 916         if (txq_id != IWL_CMD_QUEUE_NUM) {
 917                 sta = txq->cmd[txq->q.write_ptr].cmd.tx.sta_id;
 918                 sec_ctl = txq->cmd[txq->q.write_ptr].cmd.tx.sec_ctl;
 919
 920                 switch (sec_ctl & TX_CMD_SEC_MSK) {
 921                 case TX_CMD_SEC_CCM:
 922                         len += CCMP_MIC_LEN;
 923                         break;
 924                 case TX_CMD_SEC_TKIP:
 925                         len += TKIP_ICV_LEN;
 926                         break;
 927                 case TX_CMD_SEC_WEP:
 928                         len += WEP_IV_LEN + WEP_ICV_LEN;
 929                         break;
 930                 }
 931         }
 932
 933         IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
 934                        tfd_offset[txq->q.write_ptr], byte_cnt, len);
 935
 936         IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
 937                        tfd_offset[txq->q.write_ptr], sta_id, sta);
 938
 939         if (txq->q.write_ptr < IWL50_MAX_WIN_SIZE) {
 940                 IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
 941                         tfd_offset[IWL50_QUEUE_SIZE + txq->q.write_ptr],
 942                         byte_cnt, len);
 943                 IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
 944                         tfd_offset[IWL50_QUEUE_SIZE + txq->q.write_ptr],
 945                         sta_id, sta);
 946         }
 947 }
 948
 949 static void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
 950                                            struct iwl_tx_queue *txq)
 951 {
 952         int txq_id = txq->q.id;
 953         struct iwl5000_shared *shared_data = priv->shared_virt;
 954         u8 sta = 0;
 955
 956         if (txq_id != IWL_CMD_QUEUE_NUM)
 957                 sta = txq->cmd[txq->q.read_ptr].cmd.tx.sta_id;
 958
 959         shared_data->queues_byte_cnt_tbls[txq_id].tfd_offset[txq->q.read_ptr].
 960                                         val = cpu_to_le16(1 | (sta << 12));
 961
 962         if (txq->q.write_ptr < IWL50_MAX_WIN_SIZE) {
 963                 shared_data->queues_byte_cnt_tbls[txq_id].
 964                         tfd_offset[IWL50_QUEUE_SIZE + txq->q.read_ptr].
 965                                 val = cpu_to_le16(1 | (sta << 12));
 966         }
 967 }
 968
 969 static int iwl5000_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
 970                                         u16 txq_id)
 971 {
 972         u32 tbl_dw_addr;
 973         u32 tbl_dw;
 974         u16 scd_q2ratid;
 975
 976         scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK;
 977
 978         tbl_dw_addr = priv->scd_base_addr +
 979                         IWL50_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
 980
 981         tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr);
 982
 983         if (txq_id & 0x1)
 984                 tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
 985         else
 986                 tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
 987
 988         iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw);
 989
 990         return 0;
 991 }
 992 static void iwl5000_tx_queue_stop_scheduler(struct iwl_priv *priv, u16 txq_id)
 993 {
 994         /* Simply stop the queue, but don't change any configuration;
 995          * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
 996         iwl_write_prph(priv,
 997                 IWL50_SCD_QUEUE_STATUS_BITS(txq_id),
 998                 (0 << IWL50_SCD_QUEUE_STTS_REG_POS_ACTIVE)|
 999                 (1 << IWL50_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
1000 }
1001
1002 static int iwl5000_txq_agg_enable(struct iwl_priv *priv, int txq_id,
1003                                   int tx_fifo, int sta_id, int tid, u16 ssn_idx)
1004 {
1005         unsigned long flags;
1006         int ret;
1007         u16 ra_tid;
1008
1009         if (IWL50_FIRST_AMPDU_QUEUE > txq_id)
1010                 IWL_WARNING("queue number too small: %d, must be > %d\n",
1011                         txq_id, IWL50_FIRST_AMPDU_QUEUE);
1012
1013         ra_tid = BUILD_RAxTID(sta_id, tid);
1014
1015         /* Modify device's station table to Tx this TID */
1016         iwl_sta_modify_enable_tid_tx(priv, sta_id, tid);
1017
1018         spin_lock_irqsave(&priv->lock, flags);
1019         ret = iwl_grab_nic_access(priv);
1020         if (ret) {
1021                 spin_unlock_irqrestore(&priv->lock, flags);
1022                 return ret;
1023         }
1024
1025         /* Stop this Tx queue before configuring it */
1026         iwl5000_tx_queue_stop_scheduler(priv, txq_id);
1027
1028         /* Map receiver-address / traffic-ID to this queue */
1029         iwl5000_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
1030
1031         /* Set this queue as a chain-building queue */
1032         iwl_set_bits_prph(priv, IWL50_SCD_QUEUECHAIN_SEL, (1<<txq_id));
1033
1034         /* enable aggregations for the queue */
1035         iwl_set_bits_prph(priv, IWL50_SCD_AGGR_SEL, (1<<txq_id));
1036
1037         /* Place first TFD at index corresponding to start sequence number.
1038          * Assumes that ssn_idx is valid (!= 0xFFF) */
1039         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1040         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1041         iwl5000_set_wr_ptrs(priv, txq_id, ssn_idx);
1042
1043         /* Set up Tx window size and frame limit for this queue */
1044         iwl_write_targ_mem(priv, priv->scd_base_addr +
1045                         IWL50_SCD_CONTEXT_QUEUE_OFFSET(txq_id) +
1046                         sizeof(u32),
1047                         ((SCD_WIN_SIZE <<
1048                         IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS) &
1049                         IWL50_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK) |
1050                         ((SCD_FRAME_LIMIT <<
1051                         IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
1052                         IWL50_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK));
1053
1054         iwl_set_bits_prph(priv, IWL50_SCD_INTERRUPT_MASK, (1 << txq_id));
1055
1056         /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
1057         iwl5000_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
1058
1059         iwl_release_nic_access(priv);
1060         spin_unlock_irqrestore(&priv->lock, flags);
1061
1062         return 0;
1063 }
1064
1065 static int iwl5000_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
1066                                    u16 ssn_idx, u8 tx_fifo)
1067 {
1068         int ret;
1069
1070         if (IWL50_FIRST_AMPDU_QUEUE > txq_id) {
1071                 IWL_WARNING("queue number too small: %d, must be > %d\n",
1072                                 txq_id, IWL50_FIRST_AMPDU_QUEUE);
1073                 return -EINVAL;
1074         }
1075
1076         ret = iwl_grab_nic_access(priv);
1077         if (ret)
1078                 return ret;
1079
1080         iwl5000_tx_queue_stop_scheduler(priv, txq_id);
1081
1082         iwl_clear_bits_prph(priv, IWL50_SCD_AGGR_SEL, (1 << txq_id));
1083
1084         priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
1085         priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
1086         /* supposes that ssn_idx is valid (!= 0xFFF) */
1087         iwl5000_set_wr_ptrs(priv, txq_id, ssn_idx);
1088
1089         iwl_clear_bits_prph(priv, IWL50_SCD_INTERRUPT_MASK, (1 << txq_id));
1090         iwl_txq_ctx_deactivate(priv, txq_id);
1091         iwl5000_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
1092
1093         iwl_release_nic_access(priv);
1094
1095         return 0;
1096 }
1097
1098 static u16 iwl5000_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
1099 {
1100         u16 size = (u16)sizeof(struct iwl_addsta_cmd);
1101         memcpy(data, cmd, size);
1102         return size;
1103 }
1104
1105
1106 /*
1107  * Activate/Deactivat Tx DMA/FIFO channels according tx fifos mask
1108  * must be called under priv->lock and mac access
1109  */
1110 static void iwl5000_txq_set_sched(struct iwl_priv *priv, u32 mask)
1111 {
1112         iwl_write_prph(priv, IWL50_SCD_TXFACT, mask);
1113 }
1114
1115
1116 static inline u32 iwl5000_get_scd_ssn(struct iwl5000_tx_resp *tx_resp)
1117 {
1118         return le32_to_cpup((__le32*)&tx_resp->status +
1119                             tx_resp->frame_count) & MAX_SN;
1120 }
1121
1122 static int iwl5000_tx_status_reply_tx(struct iwl_priv *priv,
1123                                       struct iwl_ht_agg *agg,
1124                                       struct iwl5000_tx_resp *tx_resp,
1125                                       int txq_id, u16 start_idx)
1126 {
1127         u16 status;
1128         struct agg_tx_status *frame_status = &tx_resp->status;
1129         struct ieee80211_tx_info *info = NULL;
1130         struct ieee80211_hdr *hdr = NULL;
1131         u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1132         int i, sh, idx;
1133         u16 seq;
1134
1135         if (agg->wait_for_ba)
1136                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1137
1138         agg->frame_count = tx_resp->frame_count;
1139         agg->start_idx = start_idx;
1140         agg->rate_n_flags = rate_n_flags;
1141         agg->bitmap = 0;
1142
1143         /* # frames attempted by Tx command */
1144         if (agg->frame_count == 1) {
1145                 /* Only one frame was attempted; no block-ack will arrive */
1146                 status = le16_to_cpu(frame_status[0].status);
1147                 idx = start_idx;
1148
1149                 /* FIXME: code repetition */
1150                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1151                                    agg->frame_count, agg->start_idx, idx);
1152
1153                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1154                 info->status.retry_count = tx_resp->failure_frame;
1155                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1156                 info->flags |= iwl_is_tx_success(status)?
1157                         IEEE80211_TX_STAT_ACK : 0;
1158                 iwl_hwrate_to_tx_control(priv, rate_n_flags, info);
1159
1160                 /* FIXME: code repetition end */
1161
1162                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1163                                     status & 0xff, tx_resp->failure_frame);
1164                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n", rate_n_flags);
1165
1166                 agg->wait_for_ba = 0;
1167         } else {
1168                 /* Two or more frames were attempted; expect block-ack */
1169                 u64 bitmap = 0;
1170                 int start = agg->start_idx;
1171
1172                 /* Construct bit-map of pending frames within Tx window */
1173                 for (i = 0; i < agg->frame_count; i++) {
1174                         u16 sc;
1175                         status = le16_to_cpu(frame_status[i].status);
1176                         seq  = le16_to_cpu(frame_status[i].sequence);
1177                         idx = SEQ_TO_INDEX(seq);
1178                         txq_id = SEQ_TO_QUEUE(seq);
1179
1180                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1181                                       AGG_TX_STATE_ABORT_MSK))
1182                                 continue;
1183
1184                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1185                                            agg->frame_count, txq_id, idx);
1186
1187                         hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
1188
1189                         sc = le16_to_cpu(hdr->seq_ctrl);
1190                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1191                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
1192                                           " idx=%d, seq_idx=%d, seq=%d\n",
1193                                           idx, SEQ_TO_SN(sc),
1194                                           hdr->seq_ctrl);
1195                                 return -1;
1196                         }
1197
1198                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1199                                            i, idx, SEQ_TO_SN(sc));
1200
1201                         sh = idx - start;
1202                         if (sh > 64) {
1203                                 sh = (start - idx) + 0xff;
1204                                 bitmap = bitmap << sh;
1205                                 sh = 0;
1206                                 start = idx;
1207                         } else if (sh < -64)
1208                                 sh  = 0xff - (start - idx);
1209                         else if (sh < 0) {
1210                                 sh = start - idx;
1211                                 start = idx;
1212                                 bitmap = bitmap << sh;
1213                                 sh = 0;
1214                         }
1215                         bitmap |= (1 << sh);
1216                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1217                                            start, (u32)(bitmap & 0xFFFFFFFF));
1218                 }
1219
1220                 agg->bitmap = bitmap;
1221                 agg->start_idx = start;
1222                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1223                                    agg->frame_count, agg->start_idx,
1224                                    (unsigned long long)agg->bitmap);
1225
1226                 if (bitmap)
1227                         agg->wait_for_ba = 1;
1228         }
1229         return 0;
1230 }
1231
1232 static void iwl5000_rx_reply_tx(struct iwl_priv *priv,
1233                                 struct iwl_rx_mem_buffer *rxb)
1234 {
1235         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1236         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1237         int txq_id = SEQ_TO_QUEUE(sequence);
1238         int index = SEQ_TO_INDEX(sequence);
1239         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1240         struct ieee80211_tx_info *info;
1241         struct iwl5000_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1242         u32  status = le16_to_cpu(tx_resp->status.status);
1243         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1244         struct ieee80211_hdr *hdr;
1245         u8 *qc = NULL;
1246
1247         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1248                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1249                           "is out of range [0-%d] %d %d\n", txq_id,
1250                           index, txq->q.n_bd, txq->q.write_ptr,
1251                           txq->q.read_ptr);
1252                 return;
1253         }
1254
1255         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1256         memset(&info->status, 0, sizeof(info->status));
1257
1258         hdr = iwl_tx_queue_get_hdr(priv, txq_id, index);
1259         if (ieee80211_is_data_qos(hdr->frame_control)) {
1260                 qc = ieee80211_get_qos_ctl(hdr);
1261                 tid = qc[0] & 0xf;
1262         }
1263
1264         sta_id = iwl_get_ra_sta_id(priv, hdr);
1265         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1266                 IWL_ERROR("Station not known\n");
1267                 return;
1268         }
1269
1270         if (txq->sched_retry) {
1271                 const u32 scd_ssn = iwl5000_get_scd_ssn(tx_resp);
1272                 struct iwl_ht_agg *agg = NULL;
1273
1274                 if (!qc)
1275                         return;
1276
1277                 agg = &priv->stations[sta_id].tid[tid].agg;
1278
1279                 iwl5000_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
1280
1281                 /* check if BAR is needed */
1282                 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
1283                         info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
1284
1285                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1286                         int freed, ampdu_q;
1287                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1288                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1289                                            "%d index %d\n", scd_ssn , index);
1290                         freed = iwl_tx_queue_reclaim(priv, txq_id, index);
1291                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1292
1293                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1294                             txq_id >= 0 && priv->mac80211_registered &&
1295                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1296                                 /* calculate mac80211 ampdu sw queue to wake */
1297                                 ampdu_q = txq_id - IWL50_FIRST_AMPDU_QUEUE +
1298                                           priv->hw->queues;
1299                                 if (agg->state == IWL_AGG_OFF)
1300                                         ieee80211_wake_queue(priv->hw, txq_id);
1301                                 else
1302                                         ieee80211_wake_queue(priv->hw, ampdu_q);
1303                         }
1304                         iwl_txq_check_empty(priv, sta_id, tid, txq_id);
1305                 }
1306         } else {
1307                 info->status.retry_count = tx_resp->failure_frame;
1308                 info->flags =
1309                         iwl_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
1310                 iwl_hwrate_to_tx_control(priv,
1311                                         le32_to_cpu(tx_resp->rate_n_flags),
1312                                         info);
1313
1314                 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags "
1315                              "0x%x retries %d\n", txq_id,
1316                                 iwl_get_tx_fail_reason(status),
1317                                 status, le32_to_cpu(tx_resp->rate_n_flags),
1318                                 tx_resp->failure_frame);
1319
1320                 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1321                 if (index != -1) {
1322                     int freed = iwl_tx_queue_reclaim(priv, txq_id, index);
1323                     if (tid != MAX_TID_COUNT)
1324                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1325                     if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1326                         (txq_id >= 0) && priv->mac80211_registered)
1327                         ieee80211_wake_queue(priv->hw, txq_id);
1328                     if (tid != MAX_TID_COUNT)
1329                         iwl_txq_check_empty(priv, sta_id, tid, txq_id);
1330                 }
1331         }
1332
1333         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1334                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
1335 }
1336
1337 /* Currently 5000 is the supperset of everything */
1338 static u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len)
1339 {
1340         return len;
1341 }
1342
1343 static void iwl5000_setup_deferred_work(struct iwl_priv *priv)
1344 {
1345         /* in 5000 the tx power calibration is done in uCode */
1346         priv->disable_tx_power_cal = 1;
1347 }
1348
1349 static void iwl5000_rx_handler_setup(struct iwl_priv *priv)
1350 {
1351         /* init calibration handlers */
1352         priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] =
1353                                         iwl5000_rx_calib_result;
1354         priv->rx_handlers[CALIBRATION_COMPLETE_NOTIFICATION] =
1355                                         iwl5000_rx_calib_complete;
1356         priv->rx_handlers[REPLY_TX] = iwl5000_rx_reply_tx;
1357 }
1358
1359
1360 static int iwl5000_hw_valid_rtc_data_addr(u32 addr)
1361 {
1362         return (addr >= RTC_DATA_LOWER_BOUND) &&
1363                 (addr < IWL50_RTC_DATA_UPPER_BOUND);
1364 }
1365
1366 static int iwl5000_send_rxon_assoc(struct iwl_priv *priv)
1367 {
1368         int ret = 0;
1369         struct iwl5000_rxon_assoc_cmd rxon_assoc;
1370         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1371         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1372
1373         if ((rxon1->flags == rxon2->flags) &&
1374             (rxon1->filter_flags == rxon2->filter_flags) &&
1375             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1376             (rxon1->ofdm_ht_single_stream_basic_rates ==
1377              rxon2->ofdm_ht_single_stream_basic_rates) &&
1378             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1379              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1380             (rxon1->ofdm_ht_triple_stream_basic_rates ==
1381              rxon2->ofdm_ht_triple_stream_basic_rates) &&
1382             (rxon1->acquisition_data == rxon2->acquisition_data) &&
1383             (rxon1->rx_chain == rxon2->rx_chain) &&
1384             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1385                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1386                 return 0;
1387         }
1388
1389         rxon_assoc.flags = priv->staging_rxon.flags;
1390         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1391         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1392         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1393         rxon_assoc.reserved1 = 0;
1394         rxon_assoc.reserved2 = 0;
1395         rxon_assoc.reserved3 = 0;
1396         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1397             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1398         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1399             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1400         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1401         rxon_assoc.ofdm_ht_triple_stream_basic_rates =
1402                  priv->staging_rxon.ofdm_ht_triple_stream_basic_rates;
1403         rxon_assoc.acquisition_data = priv->staging_rxon.acquisition_data;
1404
1405         ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC,
1406                                      sizeof(rxon_assoc), &rxon_assoc, NULL);
1407         if (ret)
1408                 return ret;
1409
1410         return ret;
1411 }
1412 static int  iwl5000_send_tx_power(struct iwl_priv *priv)
1413 {
1414         struct iwl5000_tx_power_dbm_cmd tx_power_cmd;
1415
1416         /* half dBm need to multiply */
1417         tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
1418         tx_power_cmd.flags = IWL50_TX_POWER_NO_CLOSED;
1419         tx_power_cmd.srv_chan_lmt = IWL50_TX_POWER_AUTO;
1420         return  iwl_send_cmd_pdu_async(priv, REPLY_TX_POWER_DBM_CMD,
1421                                        sizeof(tx_power_cmd), &tx_power_cmd,
1422                                        NULL);
1423 }
1424
1425 static void iwl5000_temperature(struct iwl_priv *priv)
1426 {
1427         /* store temperature from statistics (in Celsius) */
1428         priv->temperature = le32_to_cpu(priv->statistics.general.temperature);
1429 }
1430
1431 static struct iwl_hcmd_ops iwl5000_hcmd = {
1432         .rxon_assoc = iwl5000_send_rxon_assoc,
1433 };
1434
1435 static struct iwl_hcmd_utils_ops iwl5000_hcmd_utils = {
1436         .get_hcmd_size = iwl5000_get_hcmd_size,
1437         .build_addsta_hcmd = iwl5000_build_addsta_hcmd,
1438         .gain_computation = iwl5000_gain_computation,
1439         .chain_noise_reset = iwl5000_chain_noise_reset,
1440 };
1441
1442 static struct iwl_lib_ops iwl5000_lib = {
1443         .set_hw_params = iwl5000_hw_set_hw_params,
1444         .alloc_shared_mem = iwl5000_alloc_shared_mem,
1445         .free_shared_mem = iwl5000_free_shared_mem,
1446         .shared_mem_rx_idx = iwl5000_shared_mem_rx_idx,
1447         .txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
1448         .txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
1449         .txq_set_sched = iwl5000_txq_set_sched,
1450         .txq_agg_enable = iwl5000_txq_agg_enable,
1451         .txq_agg_disable = iwl5000_txq_agg_disable,
1452         .rx_handler_setup = iwl5000_rx_handler_setup,
1453         .setup_deferred_work = iwl5000_setup_deferred_work,
1454         .is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
1455         .load_ucode = iwl5000_load_ucode,
1456         .init_alive_start = iwl5000_init_alive_start,
1457         .alive_notify = iwl5000_alive_notify,
1458         .send_tx_power = iwl5000_send_tx_power,
1459         .temperature = iwl5000_temperature,
1460         .apm_ops = {
1461                 .init = iwl5000_apm_init,
1462                 .reset = iwl5000_apm_reset,
1463                 .stop = iwl5000_apm_stop,
1464                 .config = iwl5000_nic_config,
1465                 .set_pwr_src = iwl4965_set_pwr_src,
1466         },
1467         .eeprom_ops = {
1468                 .regulatory_bands = {
1469                         EEPROM_5000_REG_BAND_1_CHANNELS,
1470                         EEPROM_5000_REG_BAND_2_CHANNELS,
1471                         EEPROM_5000_REG_BAND_3_CHANNELS,
1472                         EEPROM_5000_REG_BAND_4_CHANNELS,
1473                         EEPROM_5000_REG_BAND_5_CHANNELS,
1474                         EEPROM_5000_REG_BAND_24_FAT_CHANNELS,
1475                         EEPROM_5000_REG_BAND_52_FAT_CHANNELS
1476                 },
1477                 .verify_signature  = iwlcore_eeprom_verify_signature,
1478                 .acquire_semaphore = iwlcore_eeprom_acquire_semaphore,
1479                 .release_semaphore = iwlcore_eeprom_release_semaphore,
1480                 .check_version  = iwl5000_eeprom_check_version,
1481                 .query_addr = iwl5000_eeprom_query_addr,
1482         },
1483 };
1484
1485 static struct iwl_ops iwl5000_ops = {
1486         .lib = &iwl5000_lib,
1487         .hcmd = &iwl5000_hcmd,
1488         .utils = &iwl5000_hcmd_utils,
1489 };
1490
1491 static struct iwl_mod_params iwl50_mod_params = {
1492         .num_of_queues = IWL50_NUM_QUEUES,
1493         .enable_qos = 1,
1494         .amsdu_size_8K = 1,
1495         .restart_fw = 1,
1496         /* the rest are 0 by default */
1497 };
1498
1499
1500 struct iwl_cfg iwl5300_agn_cfg = {
1501         .name = "5300AGN",
1502         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
1503         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
1504         .ops = &iwl5000_ops,
1505         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
1506         .mod_params = &iwl50_mod_params,
1507 };
1508
1509 struct iwl_cfg iwl5100_agn_cfg = {
1510         .name = "5100AGN",
1511         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
1512         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
1513         .ops = &iwl5000_ops,
1514         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
1515         .mod_params = &iwl50_mod_params,
1516 };
1517
1518 struct iwl_cfg iwl5350_agn_cfg = {
1519         .name = "5350AGN",
1520         .fw_name = "iwlwifi-5000" IWL5000_UCODE_API ".ucode",
1521         .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N,
1522         .ops = &iwl5000_ops,
1523         .eeprom_size = IWL_5000_EEPROM_IMG_SIZE,
1524         .mod_params = &iwl50_mod_params,
1525 };
1526
1527 module_param_named(disable50, iwl50_mod_params.disable, int, 0444);
1528 MODULE_PARM_DESC(disable50,
1529                   "manually disable the 50XX radio (default 0 [radio on])");
1530 module_param_named(swcrypto50, iwl50_mod_params.sw_crypto, bool, 0444);
1531 MODULE_PARM_DESC(swcrypto50,
1532                   "using software crypto engine (default 0 [hardware])\n");
1533 module_param_named(debug50, iwl50_mod_params.debug, int, 0444);
1534 MODULE_PARM_DESC(debug50, "50XX debug output mask");
1535 module_param_named(queues_num50, iwl50_mod_params.num_of_queues, int, 0444);
1536 MODULE_PARM_DESC(queues_num50, "number of hw queues in 50xx series");
1537 module_param_named(qos_enable50, iwl50_mod_params.enable_qos, int, 0444);
1538 MODULE_PARM_DESC(qos_enable50, "enable all 50XX QoS functionality");
1539 module_param_named(11n_disable50, iwl50_mod_params.disable_11n, int, 0444);
1540 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality");
1541 module_param_named(amsdu_size_8K50, iwl50_mod_params.amsdu_size_8K, int, 0444);
1542 MODULE_PARM_DESC(amsdu_size_8K50, "enable 8K amsdu size in 50XX series");
1543 module_param_named(fw_restart50, iwl50_mod_params.restart_fw, int, 0444);
1544 MODULE_PARM_DESC(fw_restart50, "restart firmware in case of error");