git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-3945.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  *  Intel Linux Wireless <ilw@linux.intel.com>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  *****************************************************************************/
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <linux/delay.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/wireless.h>
  36 #include <linux/firmware.h>
  37 #include <linux/etherdevice.h>
  38 #include <asm/unaligned.h>
  39 #include <net/mac80211.h>
  40
  41 #include "iwl-fh.h"
  42 #include "iwl-3945-fh.h"
  43 #include "iwl-commands.h"
  44 #include "iwl-sta.h"
  45 #include "iwl-3945.h"
  46 #include "iwl-eeprom.h"
  47 #include "iwl-helpers.h"
  48 #include "iwl-core.h"
  49 #include "iwl-agn-rs.h"
  50
  51 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np)    \
  52         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,   \
  53                                     IWL_RATE_##r##M_IEEE,   \
  54                                     IWL_RATE_##ip##M_INDEX, \
  55                                     IWL_RATE_##in##M_INDEX, \
  56                                     IWL_RATE_##rp##M_INDEX, \
  57                                     IWL_RATE_##rn##M_INDEX, \
  58                                     IWL_RATE_##pp##M_INDEX, \
  59                                     IWL_RATE_##np##M_INDEX, \
  60                                     IWL_RATE_##r##M_INDEX_TABLE, \
  61                                     IWL_RATE_##ip##M_INDEX_TABLE }
  62
  63 /*
  64  * Parameter order:
  65  *   rate, prev rate, next rate, prev tgg rate, next tgg rate
  66  *
  67  * If there isn't a valid next or previous rate then INV is used which
  68  * maps to IWL_RATE_INVALID
  69  *
  70  */
  71 const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
  72         IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  73         IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  74         IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  75         IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18),      /* 11mbps */
  76         IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  77         IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11),       /*  9mbps */
  78         IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  79         IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  80         IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  81         IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  82         IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  83         IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  84 };
  85
  86 /* 1 = enable the iwl3945_disable_events() function */
  87 #define IWL_EVT_DISABLE (0)
  88 #define IWL_EVT_DISABLE_SIZE (1532/32)
  89
  90 /**
  91  * iwl3945_disable_events - Disable selected events in uCode event log
  92  *
  93  * Disable an event by writing "1"s into "disable"
  94  *   bitmap in SRAM.  Bit position corresponds to Event # (id/type).
  95  *   Default values of 0 enable uCode events to be logged.
  96  * Use for only special debugging.  This function is just a placeholder as-is,
  97  *   you'll need to provide the special bits! ...
  98  *   ... and set IWL_EVT_DISABLE to 1. */
  99 void iwl3945_disable_events(struct iwl_priv *priv)
 100 {
 101         int i;
 102         u32 base;               /* SRAM address of event log header */
 103         u32 disable_ptr;        /* SRAM address of event-disable bitmap array */
 104         u32 array_size;         /* # of u32 entries in array */
 105         u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
 106                 0x00000000,     /*   31 -    0  Event id numbers */
 107                 0x00000000,     /*   63 -   32 */
 108                 0x00000000,     /*   95 -   64 */
 109                 0x00000000,     /*  127 -   96 */
 110                 0x00000000,     /*  159 -  128 */
 111                 0x00000000,     /*  191 -  160 */
 112                 0x00000000,     /*  223 -  192 */
 113                 0x00000000,     /*  255 -  224 */
 114                 0x00000000,     /*  287 -  256 */
 115                 0x00000000,     /*  319 -  288 */
 116                 0x00000000,     /*  351 -  320 */
 117                 0x00000000,     /*  383 -  352 */
 118                 0x00000000,     /*  415 -  384 */
 119                 0x00000000,     /*  447 -  416 */
 120                 0x00000000,     /*  479 -  448 */
 121                 0x00000000,     /*  511 -  480 */
 122                 0x00000000,     /*  543 -  512 */
 123                 0x00000000,     /*  575 -  544 */
 124                 0x00000000,     /*  607 -  576 */
 125                 0x00000000,     /*  639 -  608 */
 126                 0x00000000,     /*  671 -  640 */
 127                 0x00000000,     /*  703 -  672 */
 128                 0x00000000,     /*  735 -  704 */
 129                 0x00000000,     /*  767 -  736 */
 130                 0x00000000,     /*  799 -  768 */
 131                 0x00000000,     /*  831 -  800 */
 132                 0x00000000,     /*  863 -  832 */
 133                 0x00000000,     /*  895 -  864 */
 134                 0x00000000,     /*  927 -  896 */
 135                 0x00000000,     /*  959 -  928 */
 136                 0x00000000,     /*  991 -  960 */
 137                 0x00000000,     /* 1023 -  992 */
 138                 0x00000000,     /* 1055 - 1024 */
 139                 0x00000000,     /* 1087 - 1056 */
 140                 0x00000000,     /* 1119 - 1088 */
 141                 0x00000000,     /* 1151 - 1120 */
 142                 0x00000000,     /* 1183 - 1152 */
 143                 0x00000000,     /* 1215 - 1184 */
 144                 0x00000000,     /* 1247 - 1216 */
 145                 0x00000000,     /* 1279 - 1248 */
 146                 0x00000000,     /* 1311 - 1280 */
 147                 0x00000000,     /* 1343 - 1312 */
 148                 0x00000000,     /* 1375 - 1344 */
 149                 0x00000000,     /* 1407 - 1376 */
 150                 0x00000000,     /* 1439 - 1408 */
 151                 0x00000000,     /* 1471 - 1440 */
 152                 0x00000000,     /* 1503 - 1472 */
 153         };
 154
 155         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 156         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
 157                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
 158                 return;
 159         }
 160
 161         disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32)));
 162         array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32)));
 163
 164         if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
 165                 IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
 166                                disable_ptr);
 167                 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
 168                         iwl_write_targ_mem(priv,
 169                                            disable_ptr + (i * sizeof(u32)),
 170                                            evt_disable[i]);
 171
 172         } else {
 173                 IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
 174                 IWL_DEBUG_INFO(priv, "  by writing \"1\"s into disable bitmap\n");
 175                 IWL_DEBUG_INFO(priv, "  in SRAM at 0x%x, size %d u32s\n",
 176                                disable_ptr, array_size);
 177         }
 178
 179 }
 180
 181 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
 182 {
 183         int idx;
 184
 185         for (idx = 0; idx < IWL_RATE_COUNT; idx++)
 186                 if (iwl3945_rates[idx].plcp == plcp)
 187                         return idx;
 188         return -1;
 189 }
 190
 191 #ifdef CONFIG_IWLWIFI_DEBUG
 192 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 193
 194 static const char *iwl3945_get_tx_fail_reason(u32 status)
 195 {
 196         switch (status & TX_STATUS_MSK) {
 197         case TX_STATUS_SUCCESS:
 198                 return "SUCCESS";
 199                 TX_STATUS_ENTRY(SHORT_LIMIT);
 200                 TX_STATUS_ENTRY(LONG_LIMIT);
 201                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 202                 TX_STATUS_ENTRY(MGMNT_ABORT);
 203                 TX_STATUS_ENTRY(NEXT_FRAG);
 204                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 205                 TX_STATUS_ENTRY(DEST_PS);
 206                 TX_STATUS_ENTRY(ABORTED);
 207                 TX_STATUS_ENTRY(BT_RETRY);
 208                 TX_STATUS_ENTRY(STA_INVALID);
 209                 TX_STATUS_ENTRY(FRAG_DROPPED);
 210                 TX_STATUS_ENTRY(TID_DISABLE);
 211                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 212                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 213                 TX_STATUS_ENTRY(TX_LOCKED);
 214                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 215         }
 216
 217         return "UNKNOWN";
 218 }
 219 #else
 220 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
 221 {
 222         return "";
 223 }
 224 #endif
 225
 226 /*
 227  * get ieee prev rate from rate scale table.
 228  * for A and B mode we need to overright prev
 229  * value
 230  */
 231 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
 232 {
 233         int next_rate = iwl3945_get_prev_ieee_rate(rate);
 234
 235         switch (priv->band) {
 236         case IEEE80211_BAND_5GHZ:
 237                 if (rate == IWL_RATE_12M_INDEX)
 238                         next_rate = IWL_RATE_9M_INDEX;
 239                 else if (rate == IWL_RATE_6M_INDEX)
 240                         next_rate = IWL_RATE_6M_INDEX;
 241                 break;
 242         case IEEE80211_BAND_2GHZ:
 243                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
 244                     iwl_is_associated(priv)) {
 245                         if (rate == IWL_RATE_11M_INDEX)
 246                                 next_rate = IWL_RATE_5M_INDEX;
 247                 }
 248                 break;
 249
 250         default:
 251                 break;
 252         }
 253
 254         return next_rate;
 255 }
 256
 257
 258 /**
 259  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
 260  *
 261  * When FW advances 'R' index, all entries between old and new 'R' index
 262  * need to be reclaimed. As result, some free space forms. If there is
 263  * enough free space (> low mark), wake the stack that feeds us.
 264  */
 265 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
 266                                      int txq_id, int index)
 267 {
 268         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 269         struct iwl_queue *q = &txq->q;
 270         struct iwl_tx_info *tx_info;
 271
 272         BUG_ON(txq_id == IWL_CMD_QUEUE_NUM);
 273
 274         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
 275                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
 276
 277                 tx_info = &txq->txb[txq->q.read_ptr];
 278                 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
 279                 tx_info->skb[0] = NULL;
 280                 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
 281         }
 282
 283         if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
 284                         (txq_id != IWL_CMD_QUEUE_NUM) &&
 285                         priv->mac80211_registered)
 286                 iwl_wake_queue(priv, txq_id);
 287 }
 288
 289 /**
 290  * iwl3945_rx_reply_tx - Handle Tx response
 291  */
 292 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
 293                             struct iwl_rx_mem_buffer *rxb)
 294 {
 295         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 296         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
 297         int txq_id = SEQ_TO_QUEUE(sequence);
 298         int index = SEQ_TO_INDEX(sequence);
 299         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 300         struct ieee80211_tx_info *info;
 301         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
 302         u32  status = le32_to_cpu(tx_resp->status);
 303         int rate_idx;
 304         int fail;
 305
 306         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
 307                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
 308                           "is out of range [0-%d] %d %d\n", txq_id,
 309                           index, txq->q.n_bd, txq->q.write_ptr,
 310                           txq->q.read_ptr);
 311                 return;
 312         }
 313
 314         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
 315         ieee80211_tx_info_clear_status(info);
 316
 317         /* Fill the MRR chain with some info about on-chip retransmissions */
 318         rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
 319         if (info->band == IEEE80211_BAND_5GHZ)
 320                 rate_idx -= IWL_FIRST_OFDM_RATE;
 321
 322         fail = tx_resp->failure_frame;
 323
 324         info->status.rates[0].idx = rate_idx;
 325         info->status.rates[0].count = fail + 1; /* add final attempt */
 326
 327         /* tx_status->rts_retry_count = tx_resp->failure_rts; */
 328         info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
 329                                 IEEE80211_TX_STAT_ACK : 0;
 330
 331         IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
 332                         txq_id, iwl3945_get_tx_fail_reason(status), status,
 333                         tx_resp->rate, tx_resp->failure_frame);
 334
 335         IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
 336         iwl3945_tx_queue_reclaim(priv, txq_id, index);
 337
 338         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
 339                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
 340 }
 341
 342
 343
 344 /*****************************************************************************
 345  *
 346  * Intel PRO/Wireless 3945ABG/BG Network Connection
 347  *
 348  *  RX handler implementations
 349  *
 350  *****************************************************************************/
 351
 352 void iwl3945_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 353 {
 354         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 355         IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
 356                      (int)sizeof(struct iwl3945_notif_statistics),
 357                      le32_to_cpu(pkt->len));
 358
 359         memcpy(&priv->statistics_39, pkt->u.raw, sizeof(priv->statistics_39));
 360
 361         iwl3945_led_background(priv);
 362
 363         priv->last_statistics_time = jiffies;
 364 }
 365
 366 /******************************************************************************
 367  *
 368  * Misc. internal state and helper functions
 369  *
 370  ******************************************************************************/
 371 #ifdef CONFIG_IWLWIFI_DEBUG
 372
 373 /**
 374  * iwl3945_report_frame - dump frame to syslog during debug sessions
 375  *
 376  * You may hack this function to show different aspects of received frames,
 377  * including selective frame dumps.
 378  * group100 parameter selects whether to show 1 out of 100 good frames.
 379  */
 380 static void _iwl3945_dbg_report_frame(struct iwl_priv *priv,
 381                       struct iwl_rx_packet *pkt,
 382                       struct ieee80211_hdr *header, int group100)
 383 {
 384         u32 to_us;
 385         u32 print_summary = 0;
 386         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
 387         u32 hundred = 0;
 388         u32 dataframe = 0;
 389         __le16 fc;
 390         u16 seq_ctl;
 391         u16 channel;
 392         u16 phy_flags;
 393         u16 length;
 394         u16 status;
 395         u16 bcn_tmr;
 396         u32 tsf_low;
 397         u64 tsf;
 398         u8 rssi;
 399         u8 agc;
 400         u16 sig_avg;
 401         u16 noise_diff;
 402         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 403         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 404         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 405         u8 *data = IWL_RX_DATA(pkt);
 406
 407         /* MAC header */
 408         fc = header->frame_control;
 409         seq_ctl = le16_to_cpu(header->seq_ctrl);
 410
 411         /* metadata */
 412         channel = le16_to_cpu(rx_hdr->channel);
 413         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
 414         length = le16_to_cpu(rx_hdr->len);
 415
 416         /* end-of-frame status and timestamp */
 417         status = le32_to_cpu(rx_end->status);
 418         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
 419         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
 420         tsf = le64_to_cpu(rx_end->timestamp);
 421
 422         /* signal statistics */
 423         rssi = rx_stats->rssi;
 424         agc = rx_stats->agc;
 425         sig_avg = le16_to_cpu(rx_stats->sig_avg);
 426         noise_diff = le16_to_cpu(rx_stats->noise_diff);
 427
 428         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
 429
 430         /* if data frame is to us and all is good,
 431          *   (optionally) print summary for only 1 out of every 100 */
 432         if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
 433             cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
 434                 dataframe = 1;
 435                 if (!group100)
 436                         print_summary = 1;      /* print each frame */
 437                 else if (priv->framecnt_to_us < 100) {
 438                         priv->framecnt_to_us++;
 439                         print_summary = 0;
 440                 } else {
 441                         priv->framecnt_to_us = 0;
 442                         print_summary = 1;
 443                         hundred = 1;
 444                 }
 445         } else {
 446                 /* print summary for all other frames */
 447                 print_summary = 1;
 448         }
 449
 450         if (print_summary) {
 451                 char *title;
 452                 int rate;
 453
 454                 if (hundred)
 455                         title = "100Frames";
 456                 else if (ieee80211_has_retry(fc))
 457                         title = "Retry";
 458                 else if (ieee80211_is_assoc_resp(fc))
 459                         title = "AscRsp";
 460                 else if (ieee80211_is_reassoc_resp(fc))
 461                         title = "RasRsp";
 462                 else if (ieee80211_is_probe_resp(fc)) {
 463                         title = "PrbRsp";
 464                         print_dump = 1; /* dump frame contents */
 465                 } else if (ieee80211_is_beacon(fc)) {
 466                         title = "Beacon";
 467                         print_dump = 1; /* dump frame contents */
 468                 } else if (ieee80211_is_atim(fc))
 469                         title = "ATIM";
 470                 else if (ieee80211_is_auth(fc))
 471                         title = "Auth";
 472                 else if (ieee80211_is_deauth(fc))
 473                         title = "DeAuth";
 474                 else if (ieee80211_is_disassoc(fc))
 475                         title = "DisAssoc";
 476                 else
 477                         title = "Frame";
 478
 479                 rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 480                 if (rate == -1)
 481                         rate = 0;
 482                 else
 483                         rate = iwl3945_rates[rate].ieee / 2;
 484
 485                 /* print frame summary.
 486                  * MAC addresses show just the last byte (for brevity),
 487                  *    but you can hack it to show more, if you'd like to. */
 488                 if (dataframe)
 489                         IWL_DEBUG_RX(priv, "%s: mhd=0x%04x, dst=0x%02x, "
 490                                      "len=%u, rssi=%d, chnl=%d, rate=%d, \n",
 491                                      title, le16_to_cpu(fc), header->addr1[5],
 492                                      length, rssi, channel, rate);
 493                 else {
 494                         /* src/dst addresses assume managed mode */
 495                         IWL_DEBUG_RX(priv, "%s: 0x%04x, dst=0x%02x, "
 496                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
 497                                      "phy=0x%02x, chnl=%d\n",
 498                                      title, le16_to_cpu(fc), header->addr1[5],
 499                                      header->addr3[5], rssi,
 500                                      tsf_low - priv->scan_start_tsf,
 501                                      phy_flags, channel);
 502                 }
 503         }
 504         if (print_dump)
 505                 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
 506 }
 507
 508 static void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 509                       struct iwl_rx_packet *pkt,
 510                       struct ieee80211_hdr *header, int group100)
 511 {
 512         if (priv->debug_level & IWL_DL_RX)
 513                 _iwl3945_dbg_report_frame(priv, pkt, header, group100);
 514 }
 515
 516 #else
 517 static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 518                       struct iwl_rx_packet *pkt,
 519                       struct ieee80211_hdr *header, int group100)
 520 {
 521 }
 522 #endif
 523
 524 /* This is necessary only for a number of statistics, see the caller. */
 525 static int iwl3945_is_network_packet(struct iwl_priv *priv,
 526                 struct ieee80211_hdr *header)
 527 {
 528         /* Filter incoming packets to determine if they are targeted toward
 529          * this network, discarding packets coming from ourselves */
 530         switch (priv->iw_mode) {
 531         case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source    | BSSID */
 532                 /* packets to our IBSS update information */
 533                 return !compare_ether_addr(header->addr3, priv->bssid);
 534         case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
 535                 /* packets to our IBSS update information */
 536                 return !compare_ether_addr(header->addr2, priv->bssid);
 537         default:
 538                 return 1;
 539         }
 540 }
 541
 542 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
 543                                    struct iwl_rx_mem_buffer *rxb,
 544                                    struct ieee80211_rx_status *stats)
 545 {
 546         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 547 #ifdef CONFIG_IWLWIFI_LEDS
 548         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 549 #endif
 550         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 551         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 552         short len = le16_to_cpu(rx_hdr->len);
 553
 554         /* We received data from the HW, so stop the watchdog */
 555         if (unlikely((len + IWL39_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) {
 556                 IWL_DEBUG_DROP(priv, "Corruption detected!\n");
 557                 return;
 558         }
 559
 560         /* We only process data packets if the interface is open */
 561         if (unlikely(!priv->is_open)) {
 562                 IWL_DEBUG_DROP_LIMIT(priv,
 563                         "Dropping packet while interface is not open.\n");
 564                 return;
 565         }
 566
 567         skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt);
 568         /* Set the size of the skb to the size of the frame */
 569         skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
 570
 571         if (!iwl3945_mod_params.sw_crypto)
 572                 iwl_set_decrypted_flag(priv,
 573                                        (struct ieee80211_hdr *)rxb->skb->data,
 574                                        le32_to_cpu(rx_end->status), stats);
 575
 576 #ifdef CONFIG_IWLWIFI_LEDS
 577         if (ieee80211_is_data(hdr->frame_control))
 578                 priv->rxtxpackets += len;
 579 #endif
 580         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
 581         rxb->skb = NULL;
 582 }
 583
 584 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
 585
 586 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
 587                                 struct iwl_rx_mem_buffer *rxb)
 588 {
 589         struct ieee80211_hdr *header;
 590         struct ieee80211_rx_status rx_status;
 591         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 592         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 593         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 594         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 595         int snr;
 596         u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
 597         u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
 598         u8 network_packet;
 599
 600         rx_status.flag = 0;
 601         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
 602         rx_status.freq =
 603                 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
 604         rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
 605                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 606
 607         rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 608         if (rx_status.band == IEEE80211_BAND_5GHZ)
 609                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
 610
 611         rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
 612                                         RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
 613
 614         /* set the preamble flag if appropriate */
 615         if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
 616                 rx_status.flag |= RX_FLAG_SHORTPRE;
 617
 618         if ((unlikely(rx_stats->phy_count > 20))) {
 619                 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
 620                                 rx_stats->phy_count);
 621                 return;
 622         }
 623
 624         if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
 625             || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
 626                 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
 627                 return;
 628         }
 629
 630
 631
 632         /* Convert 3945's rssi indicator to dBm */
 633         rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
 634
 635         /* Set default noise value to -127 */
 636         if (priv->last_rx_noise == 0)
 637                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
 638
 639         /* 3945 provides noise info for OFDM frames only.
 640          * sig_avg and noise_diff are measured by the 3945's digital signal
 641          *   processor (DSP), and indicate linear levels of signal level and
 642          *   distortion/noise within the packet preamble after
 643          *   automatic gain control (AGC).  sig_avg should stay fairly
 644          *   constant if the radio's AGC is working well.
 645          * Since these values are linear (not dB or dBm), linear
 646          *   signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
 647          * Convert linear SNR to dB SNR, then subtract that from rssi dBm
 648          *   to obtain noise level in dBm.
 649          * Calculate rx_status.signal (quality indicator in %) based on SNR. */
 650         if (rx_stats_noise_diff) {
 651                 snr = rx_stats_sig_avg / rx_stats_noise_diff;
 652                 rx_status.noise = rx_status.signal -
 653                                         iwl3945_calc_db_from_ratio(snr);
 654                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
 655                                                          rx_status.noise);
 656
 657         /* If noise info not available, calculate signal quality indicator (%)
 658          *   using just the dBm signal level. */
 659         } else {
 660                 rx_status.noise = priv->last_rx_noise;
 661                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
 662         }
 663
 664
 665         IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
 666                         rx_status.signal, rx_status.noise, rx_status.qual,
 667                         rx_stats_sig_avg, rx_stats_noise_diff);
 668
 669         header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 670
 671         network_packet = iwl3945_is_network_packet(priv, header);
 672
 673         IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
 674                               network_packet ? '*' : ' ',
 675                               le16_to_cpu(rx_hdr->channel),
 676                               rx_status.signal, rx_status.signal,
 677                               rx_status.noise, rx_status.rate_idx);
 678
 679         /* Set "1" to report good data frames in groups of 100 */
 680         iwl3945_dbg_report_frame(priv, pkt, header, 1);
 681
 682         if (network_packet) {
 683                 priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
 684                 priv->last_tsf = le64_to_cpu(rx_end->timestamp);
 685                 priv->last_rx_rssi = rx_status.signal;
 686                 priv->last_rx_noise = rx_status.noise;
 687         }
 688
 689         iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
 690 }
 691
 692 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 693                                      struct iwl_tx_queue *txq,
 694                                      dma_addr_t addr, u16 len, u8 reset, u8 pad)
 695 {
 696         int count;
 697         struct iwl_queue *q;
 698         struct iwl3945_tfd *tfd, *tfd_tmp;
 699
 700         q = &txq->q;
 701         tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 702         tfd = &tfd_tmp[q->write_ptr];
 703
 704         if (reset)
 705                 memset(tfd, 0, sizeof(*tfd));
 706
 707         count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 708
 709         if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
 710                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 711                           NUM_TFD_CHUNKS);
 712                 return -EINVAL;
 713         }
 714
 715         tfd->tbs[count].addr = cpu_to_le32(addr);
 716         tfd->tbs[count].len = cpu_to_le32(len);
 717
 718         count++;
 719
 720         tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
 721                                          TFD_CTL_PAD_SET(pad));
 722
 723         return 0;
 724 }
 725
 726 /**
 727  * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
 728  *
 729  * Does NOT advance any indexes
 730  */
 731 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 732 {
 733         struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 734         int index = txq->q.read_ptr;
 735         struct iwl3945_tfd *tfd = &tfd_tmp[index];
 736         struct pci_dev *dev = priv->pci_dev;
 737         int i;
 738         int counter;
 739
 740         /* sanity check */
 741         counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 742         if (counter > NUM_TFD_CHUNKS) {
 743                 IWL_ERR(priv, "Too many chunks: %i\n", counter);
 744                 /* @todo issue fatal error, it is quite serious situation */
 745                 return;
 746         }
 747
 748         /* Unmap tx_cmd */
 749         if (counter)
 750                 pci_unmap_single(dev,
 751                                 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
 752                                 pci_unmap_len(&txq->cmd[index]->meta, len),
 753                                 PCI_DMA_TODEVICE);
 754
 755         /* unmap chunks if any */
 756
 757         for (i = 1; i < counter; i++) {
 758                 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
 759                          le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
 760                 if (txq->txb[txq->q.read_ptr].skb[0]) {
 761                         struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
 762                         if (txq->txb[txq->q.read_ptr].skb[0]) {
 763                                 /* Can be called from interrupt context */
 764                                 dev_kfree_skb_any(skb);
 765                                 txq->txb[txq->q.read_ptr].skb[0] = NULL;
 766                         }
 767                 }
 768         }
 769         return ;
 770 }
 771
 772 /**
 773  * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
 774  *
 775 */
 776 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd,
 777                               struct ieee80211_tx_info *info,
 778                               struct ieee80211_hdr *hdr, int sta_id, int tx_id)
 779 {
 780         u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
 781         u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
 782         u16 rate_mask;
 783         int rate;
 784         u8 rts_retry_limit;
 785         u8 data_retry_limit;
 786         __le32 tx_flags;
 787         __le16 fc = hdr->frame_control;
 788         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 789
 790         rate = iwl3945_rates[rate_index].plcp;
 791         tx_flags = tx->tx_flags;
 792
 793         /* We need to figure out how to get the sta->supp_rates while
 794          * in this running context */
 795         rate_mask = IWL_RATES_MASK;
 796
 797         if (tx_id >= IWL_CMD_QUEUE_NUM)
 798                 rts_retry_limit = 3;
 799         else
 800                 rts_retry_limit = 7;
 801
 802         if (ieee80211_is_probe_resp(fc)) {
 803                 data_retry_limit = 3;
 804                 if (data_retry_limit < rts_retry_limit)
 805                         rts_retry_limit = data_retry_limit;
 806         } else
 807                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
 808
 809         if (priv->data_retry_limit != -1)
 810                 data_retry_limit = priv->data_retry_limit;
 811
 812         if (ieee80211_is_mgmt(fc)) {
 813                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
 814                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
 815                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
 816                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
 817                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
 818                         if (tx_flags & TX_CMD_FLG_RTS_MSK) {
 819                                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 820                                 tx_flags |= TX_CMD_FLG_CTS_MSK;
 821                         }
 822                         break;
 823                 default:
 824                         break;
 825                 }
 826         }
 827
 828         tx->rts_retry_limit = rts_retry_limit;
 829         tx->data_retry_limit = data_retry_limit;
 830         tx->rate = rate;
 831         tx->tx_flags = tx_flags;
 832
 833         /* OFDM */
 834         tx->supp_rates[0] =
 835            ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
 836
 837         /* CCK */
 838         tx->supp_rates[1] = (rate_mask & 0xF);
 839
 840         IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
 841                        "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
 842                        tx->rate, le32_to_cpu(tx->tx_flags),
 843                        tx->supp_rates[1], tx->supp_rates[0]);
 844 }
 845
 846 u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
 847 {
 848         unsigned long flags_spin;
 849         struct iwl_station_entry *station;
 850
 851         if (sta_id == IWL_INVALID_STATION)
 852                 return IWL_INVALID_STATION;
 853
 854         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 855         station = &priv->stations[sta_id];
 856
 857         station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
 858         station->sta.rate_n_flags = cpu_to_le16(tx_rate);
 859         station->sta.mode = STA_CONTROL_MODIFY_MSK;
 860
 861         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 862
 863         iwl_send_add_sta(priv, &station->sta, flags);
 864         IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
 865                         sta_id, tx_rate);
 866         return sta_id;
 867 }
 868
 869 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 870 {
 871         if (src == IWL_PWR_SRC_VAUX) {
 872                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
 873                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 874                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 875                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
 876
 877                         iwl_poll_bit(priv, CSR_GPIO_IN,
 878                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
 879                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
 880                 }
 881         } else {
 882                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 883                                 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 884                                 ~APMG_PS_CTRL_MSK_PWR_SRC);
 885
 886                 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
 887                              CSR_GPIO_IN_BIT_AUX_POWER, 5000);  /* uS */
 888         }
 889
 890         return 0;
 891 }
 892
 893 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 894 {
 895         iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr);
 896         iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
 897         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
 898         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
 899                 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
 900                 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
 901                 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
 902                 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
 903                 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
 904                 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
 905                 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
 906                 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
 907
 908         /* fake read to flush all prev I/O */
 909         iwl_read_direct32(priv, FH39_RSSR_CTRL);
 910
 911         return 0;
 912 }
 913
 914 static int iwl3945_tx_reset(struct iwl_priv *priv)
 915 {
 916
 917         /* bypass mode */
 918         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
 919
 920         /* RA 0 is active */
 921         iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
 922
 923         /* all 6 fifo are active */
 924         iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
 925
 926         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
 927         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
 928         iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
 929         iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
 930
 931         iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
 932                              priv->shared_phys);
 933
 934         iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
 935                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
 936                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
 937                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
 938                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
 939                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
 940                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
 941                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
 942
 943
 944         return 0;
 945 }
 946
 947 /**
 948  * iwl3945_txq_ctx_reset - Reset TX queue context
 949  *
 950  * Destroys all DMA structures and initialize them again
 951  */
 952 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
 953 {
 954         int rc;
 955         int txq_id, slots_num;
 956
 957         iwl3945_hw_txq_ctx_free(priv);
 958
 959         /* Tx CMD queue */
 960         rc = iwl3945_tx_reset(priv);
 961         if (rc)
 962                 goto error;
 963
 964         /* Tx queue(s) */
 965         for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++) {
 966                 slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
 967                                 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
 968                 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
 969                                        txq_id);
 970                 if (rc) {
 971                         IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
 972                         goto error;
 973                 }
 974         }
 975
 976         return rc;
 977
 978  error:
 979         iwl3945_hw_txq_ctx_free(priv);
 980         return rc;
 981 }
 982
 983 static int iwl3945_apm_init(struct iwl_priv *priv)
 984 {
 985         int ret;
 986
 987         iwl_power_initialize(priv);
 988
 989         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 990                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
 991
 992         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
 993         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 994                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
 995
 996         /* set "initialization complete" bit to move adapter
 997         * D0U* --> D0A* state */
 998         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
 999
1000         ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1001                             CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1002         if (ret < 0) {
1003                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1004                 goto out;
1005         }
1006
1007         /* enable DMA */
1008         iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
1009                                                 APMG_CLK_VAL_BSM_CLK_RQT);
1010
1011         udelay(20);
1012
1013         /* disable L1-Active */
1014         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1015                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1016
1017 out:
1018         return ret;
1019 }
1020
1021 static void iwl3945_nic_config(struct iwl_priv *priv)
1022 {
1023         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1024         unsigned long flags;
1025         u8 rev_id = 0;
1026
1027         spin_lock_irqsave(&priv->lock, flags);
1028
1029         /* Determine HW type */
1030         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
1031
1032         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
1033
1034         if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
1035                 IWL_DEBUG_INFO(priv, "RTP type \n");
1036         else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
1037                 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
1038                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1039                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
1040         } else {
1041                 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
1042                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1043                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
1044         }
1045
1046         if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
1047                 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
1048                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1049                             CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
1050         } else
1051                 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
1052
1053         if ((eeprom->board_revision & 0xF0) == 0xD0) {
1054                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1055                                eeprom->board_revision);
1056                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1057                             CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1058         } else {
1059                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1060                                eeprom->board_revision);
1061                 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1062                               CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1063         }
1064
1065         if (eeprom->almgor_m_version <= 1) {
1066                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1067                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1068                 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
1069                                eeprom->almgor_m_version);
1070         } else {
1071                 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
1072                                eeprom->almgor_m_version);
1073                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1074                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1075         }
1076         spin_unlock_irqrestore(&priv->lock, flags);
1077
1078         if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1079                 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
1080
1081         if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1082                 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
1083 }
1084
1085 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1086 {
1087         int rc;
1088         unsigned long flags;
1089         struct iwl_rx_queue *rxq = &priv->rxq;
1090
1091         spin_lock_irqsave(&priv->lock, flags);
1092         priv->cfg->ops->lib->apm_ops.init(priv);
1093         spin_unlock_irqrestore(&priv->lock, flags);
1094
1095         rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
1096         if (rc)
1097                 return rc;
1098
1099         priv->cfg->ops->lib->apm_ops.config(priv);
1100
1101         /* Allocate the RX queue, or reset if it is already allocated */
1102         if (!rxq->bd) {
1103                 rc = iwl_rx_queue_alloc(priv);
1104                 if (rc) {
1105                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
1106                         return -ENOMEM;
1107                 }
1108         } else
1109                 iwl3945_rx_queue_reset(priv, rxq);
1110
1111         iwl3945_rx_replenish(priv);
1112
1113         iwl3945_rx_init(priv, rxq);
1114
1115
1116         /* Look at using this instead:
1117         rxq->need_update = 1;
1118         iwl_rx_queue_update_write_ptr(priv, rxq);
1119         */
1120
1121         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1122
1123         rc = iwl3945_txq_ctx_reset(priv);
1124         if (rc)
1125                 return rc;
1126
1127         set_bit(STATUS_INIT, &priv->status);
1128
1129         return 0;
1130 }
1131
1132 /**
1133  * iwl3945_hw_txq_ctx_free - Free TXQ Context
1134  *
1135  * Destroy all TX DMA queues and structures
1136  */
1137 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1138 {
1139         int txq_id;
1140
1141         /* Tx queues */
1142         for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++)
1143                 if (txq_id == IWL_CMD_QUEUE_NUM)
1144                         iwl_cmd_queue_free(priv);
1145                 else
1146                         iwl_tx_queue_free(priv, txq_id);
1147
1148 }
1149
1150 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1151 {
1152         int txq_id;
1153
1154         /* stop SCD */
1155         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1156
1157         /* reset TFD queues */
1158         for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++) {
1159                 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1160                 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1161                                 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1162                                 1000);
1163         }
1164
1165         iwl3945_hw_txq_ctx_free(priv);
1166 }
1167
1168 static int iwl3945_apm_stop_master(struct iwl_priv *priv)
1169 {
1170         int ret = 0;
1171         unsigned long flags;
1172
1173         spin_lock_irqsave(&priv->lock, flags);
1174
1175         /* set stop master bit */
1176         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1177
1178         iwl_poll_direct_bit(priv, CSR_RESET,
1179                             CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1180
1181         if (ret < 0)
1182                 goto out;
1183
1184 out:
1185         spin_unlock_irqrestore(&priv->lock, flags);
1186         IWL_DEBUG_INFO(priv, "stop master\n");
1187
1188         return ret;
1189 }
1190
1191 static void iwl3945_apm_stop(struct iwl_priv *priv)
1192 {
1193         unsigned long flags;
1194
1195         iwl3945_apm_stop_master(priv);
1196
1197         spin_lock_irqsave(&priv->lock, flags);
1198
1199         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1200
1201         udelay(10);
1202         /* clear "init complete"  move adapter D0A* --> D0U state */
1203         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1204         spin_unlock_irqrestore(&priv->lock, flags);
1205 }
1206
1207 static int iwl3945_apm_reset(struct iwl_priv *priv)
1208 {
1209         iwl3945_apm_stop_master(priv);
1210
1211
1212         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1213         udelay(10);
1214
1215         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1216
1217         iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1218                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1219
1220         iwl_write_prph(priv, APMG_CLK_CTRL_REG,
1221                                 APMG_CLK_VAL_BSM_CLK_RQT);
1222
1223         iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
1224         iwl_write_prph(priv, APMG_RTC_INT_STT_REG,
1225                                         0xFFFFFFFF);
1226
1227         /* enable DMA */
1228         iwl_write_prph(priv, APMG_CLK_EN_REG,
1229                                 APMG_CLK_VAL_DMA_CLK_RQT |
1230                                 APMG_CLK_VAL_BSM_CLK_RQT);
1231         udelay(10);
1232
1233         iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
1234                                 APMG_PS_CTRL_VAL_RESET_REQ);
1235         udelay(5);
1236         iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
1237                                 APMG_PS_CTRL_VAL_RESET_REQ);
1238
1239         /* Clear the 'host command active' bit... */
1240         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1241
1242         wake_up_interruptible(&priv->wait_command_queue);
1243
1244         return 0;
1245 }
1246
1247 /**
1248  * iwl3945_hw_reg_adjust_power_by_temp
1249  * return index delta into power gain settings table
1250 */
1251 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1252 {
1253         return (new_reading - old_reading) * (-11) / 100;
1254 }
1255
1256 /**
1257  * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1258  */
1259 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1260 {
1261         return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1262 }
1263
1264 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1265 {
1266         return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1267 }
1268
1269 /**
1270  * iwl3945_hw_reg_txpower_get_temperature
1271  * get the current temperature by reading from NIC
1272 */
1273 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1274 {
1275         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1276         int temperature;
1277
1278         temperature = iwl3945_hw_get_temperature(priv);
1279
1280         /* driver's okay range is -260 to +25.
1281          *   human readable okay range is 0 to +285 */
1282         IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1283
1284         /* handle insane temp reading */
1285         if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1286                 IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
1287
1288                 /* if really really hot(?),
1289                  *   substitute the 3rd band/group's temp measured at factory */
1290                 if (priv->last_temperature > 100)
1291                         temperature = eeprom->groups[2].temperature;
1292                 else /* else use most recent "sane" value from driver */
1293                         temperature = priv->last_temperature;
1294         }
1295
1296         return temperature;     /* raw, not "human readable" */
1297 }
1298
1299 /* Adjust Txpower only if temperature variance is greater than threshold.
1300  *
1301  * Both are lower than older versions' 9 degrees */
1302 #define IWL_TEMPERATURE_LIMIT_TIMER   6
1303
1304 /**
1305  * is_temp_calib_needed - determines if new calibration is needed
1306  *
1307  * records new temperature in tx_mgr->temperature.
1308  * replaces tx_mgr->last_temperature *only* if calib needed
1309  *    (assumes caller will actually do the calibration!). */
1310 static int is_temp_calib_needed(struct iwl_priv *priv)
1311 {
1312         int temp_diff;
1313
1314         priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1315         temp_diff = priv->temperature - priv->last_temperature;
1316
1317         /* get absolute value */
1318         if (temp_diff < 0) {
1319                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1320                 temp_diff = -temp_diff;
1321         } else if (temp_diff == 0)
1322                 IWL_DEBUG_POWER(priv, "Same temp,\n");
1323         else
1324                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1325
1326         /* if we don't need calibration, *don't* update last_temperature */
1327         if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1328                 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1329                 return 0;
1330         }
1331
1332         IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1333
1334         /* assume that caller will actually do calib ...
1335          *   update the "last temperature" value */
1336         priv->last_temperature = priv->temperature;
1337         return 1;
1338 }
1339
1340 #define IWL_MAX_GAIN_ENTRIES 78
1341 #define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
1342 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1343
1344 /* radio and DSP power table, each step is 1/2 dB.
1345  * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1346 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1347         {
1348          {251, 127},            /* 2.4 GHz, highest power */
1349          {251, 127},
1350          {251, 127},
1351          {251, 127},
1352          {251, 125},
1353          {251, 110},
1354          {251, 105},
1355          {251, 98},
1356          {187, 125},
1357          {187, 115},
1358          {187, 108},
1359          {187, 99},
1360          {243, 119},
1361          {243, 111},
1362          {243, 105},
1363          {243, 97},
1364          {243, 92},
1365          {211, 106},
1366          {211, 100},
1367          {179, 120},
1368          {179, 113},
1369          {179, 107},
1370          {147, 125},
1371          {147, 119},
1372          {147, 112},
1373          {147, 106},
1374          {147, 101},
1375          {147, 97},
1376          {147, 91},
1377          {115, 107},
1378          {235, 121},
1379          {235, 115},
1380          {235, 109},
1381          {203, 127},
1382          {203, 121},
1383          {203, 115},
1384          {203, 108},
1385          {203, 102},
1386          {203, 96},
1387          {203, 92},
1388          {171, 110},
1389          {171, 104},
1390          {171, 98},
1391          {139, 116},
1392          {227, 125},
1393          {227, 119},
1394          {227, 113},
1395          {227, 107},
1396          {227, 101},
1397          {227, 96},
1398          {195, 113},
1399          {195, 106},
1400          {195, 102},
1401          {195, 95},
1402          {163, 113},
1403          {163, 106},
1404          {163, 102},
1405          {163, 95},
1406          {131, 113},
1407          {131, 106},
1408          {131, 102},
1409          {131, 95},
1410          {99, 113},
1411          {99, 106},
1412          {99, 102},
1413          {99, 95},
1414          {67, 113},
1415          {67, 106},
1416          {67, 102},
1417          {67, 95},
1418          {35, 113},
1419          {35, 106},
1420          {35, 102},
1421          {35, 95},
1422          {3, 113},
1423          {3, 106},
1424          {3, 102},
1425          {3, 95} },             /* 2.4 GHz, lowest power */
1426         {
1427          {251, 127},            /* 5.x GHz, highest power */
1428          {251, 120},
1429          {251, 114},
1430          {219, 119},
1431          {219, 101},
1432          {187, 113},
1433          {187, 102},
1434          {155, 114},
1435          {155, 103},
1436          {123, 117},
1437          {123, 107},
1438          {123, 99},
1439          {123, 92},
1440          {91, 108},
1441          {59, 125},
1442          {59, 118},
1443          {59, 109},
1444          {59, 102},
1445          {59, 96},
1446          {59, 90},
1447          {27, 104},
1448          {27, 98},
1449          {27, 92},
1450          {115, 118},
1451          {115, 111},
1452          {115, 104},
1453          {83, 126},
1454          {83, 121},
1455          {83, 113},
1456          {83, 105},
1457          {83, 99},
1458          {51, 118},
1459          {51, 111},
1460          {51, 104},
1461          {51, 98},
1462          {19, 116},
1463          {19, 109},
1464          {19, 102},
1465          {19, 98},
1466          {19, 93},
1467          {171, 113},
1468          {171, 107},
1469          {171, 99},
1470          {139, 120},
1471          {139, 113},
1472          {139, 107},
1473          {139, 99},
1474          {107, 120},
1475          {107, 113},
1476          {107, 107},
1477          {107, 99},
1478          {75, 120},
1479          {75, 113},
1480          {75, 107},
1481          {75, 99},
1482          {43, 120},
1483          {43, 113},
1484          {43, 107},
1485          {43, 99},
1486          {11, 120},
1487          {11, 113},
1488          {11, 107},
1489          {11, 99},
1490          {131, 107},
1491          {131, 99},
1492          {99, 120},
1493          {99, 113},
1494          {99, 107},
1495          {99, 99},
1496          {67, 120},
1497          {67, 113},
1498          {67, 107},
1499          {67, 99},
1500          {35, 120},
1501          {35, 113},
1502          {35, 107},
1503          {35, 99},
1504          {3, 120} }             /* 5.x GHz, lowest power */
1505 };
1506
1507 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1508 {
1509         if (index < 0)
1510                 return 0;
1511         if (index >= IWL_MAX_GAIN_ENTRIES)
1512                 return IWL_MAX_GAIN_ENTRIES - 1;
1513         return (u8) index;
1514 }
1515
1516 /* Kick off thermal recalibration check every 60 seconds */
1517 #define REG_RECALIB_PERIOD (60)
1518
1519 /**
1520  * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1521  *
1522  * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1523  * or 6 Mbit (OFDM) rates.
1524  */
1525 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1526                                s32 rate_index, const s8 *clip_pwrs,
1527                                struct iwl_channel_info *ch_info,
1528                                int band_index)
1529 {
1530         struct iwl3945_scan_power_info *scan_power_info;
1531         s8 power;
1532         u8 power_index;
1533
1534         scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1535
1536         /* use this channel group's 6Mbit clipping/saturation pwr,
1537          *   but cap at regulatory scan power restriction (set during init
1538          *   based on eeprom channel data) for this channel.  */
1539         power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1540
1541         /* further limit to user's max power preference.
1542          * FIXME:  Other spectrum management power limitations do not
1543          *   seem to apply?? */
1544         power = min(power, priv->tx_power_user_lmt);
1545         scan_power_info->requested_power = power;
1546
1547         /* find difference between new scan *power* and current "normal"
1548          *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
1549          *   current "normal" temperature-compensated Tx power *index* for
1550          *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1551          *   *index*. */
1552         power_index = ch_info->power_info[rate_index].power_table_index
1553             - (power - ch_info->power_info
1554                [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1555
1556         /* store reference index that we use when adjusting *all* scan
1557          *   powers.  So we can accommodate user (all channel) or spectrum
1558          *   management (single channel) power changes "between" temperature
1559          *   feedback compensation procedures.
1560          * don't force fit this reference index into gain table; it may be a
1561          *   negative number.  This will help avoid errors when we're at
1562          *   the lower bounds (highest gains, for warmest temperatures)
1563          *   of the table. */
1564
1565         /* don't exceed table bounds for "real" setting */
1566         power_index = iwl3945_hw_reg_fix_power_index(power_index);
1567
1568         scan_power_info->power_table_index = power_index;
1569         scan_power_info->tpc.tx_gain =
1570             power_gain_table[band_index][power_index].tx_gain;
1571         scan_power_info->tpc.dsp_atten =
1572             power_gain_table[band_index][power_index].dsp_atten;
1573 }
1574
1575 /**
1576  * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1577  *
1578  * Configures power settings for all rates for the current channel,
1579  * using values from channel info struct, and send to NIC
1580  */
1581 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1582 {
1583         int rate_idx, i;
1584         const struct iwl_channel_info *ch_info = NULL;
1585         struct iwl3945_txpowertable_cmd txpower = {
1586                 .channel = priv->active_rxon.channel,
1587         };
1588
1589         txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1590         ch_info = iwl_get_channel_info(priv,
1591                                        priv->band,
1592                                        le16_to_cpu(priv->active_rxon.channel));
1593         if (!ch_info) {
1594                 IWL_ERR(priv,
1595                         "Failed to get channel info for channel %d [%d]\n",
1596                         le16_to_cpu(priv->active_rxon.channel), priv->band);
1597                 return -EINVAL;
1598         }
1599
1600         if (!is_channel_valid(ch_info)) {
1601                 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1602                                 "non-Tx channel.\n");
1603                 return 0;
1604         }
1605
1606         /* fill cmd with power settings for all rates for current channel */
1607         /* Fill OFDM rate */
1608         for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1609              rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1610
1611                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1612                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1613
1614                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1615                                 le16_to_cpu(txpower.channel),
1616                                 txpower.band,
1617                                 txpower.power[i].tpc.tx_gain,
1618                                 txpower.power[i].tpc.dsp_atten,
1619                                 txpower.power[i].rate);
1620         }
1621         /* Fill CCK rates */
1622         for (rate_idx = IWL_FIRST_CCK_RATE;
1623              rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1624                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1625                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1626
1627                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1628                                 le16_to_cpu(txpower.channel),
1629                                 txpower.band,
1630                                 txpower.power[i].tpc.tx_gain,
1631                                 txpower.power[i].tpc.dsp_atten,
1632                                 txpower.power[i].rate);
1633         }
1634
1635         return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1636                                 sizeof(struct iwl3945_txpowertable_cmd),
1637                                 &txpower);
1638
1639 }
1640
1641 /**
1642  * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1643  * @ch_info: Channel to update.  Uses power_info.requested_power.
1644  *
1645  * Replace requested_power and base_power_index ch_info fields for
1646  * one channel.
1647  *
1648  * Called if user or spectrum management changes power preferences.
1649  * Takes into account h/w and modulation limitations (clip power).
1650  *
1651  * This does *not* send anything to NIC, just sets up ch_info for one channel.
1652  *
1653  * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1654  *       properly fill out the scan powers, and actual h/w gain settings,
1655  *       and send changes to NIC
1656  */
1657 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1658                              struct iwl_channel_info *ch_info)
1659 {
1660         struct iwl3945_channel_power_info *power_info;
1661         int power_changed = 0;
1662         int i;
1663         const s8 *clip_pwrs;
1664         int power;
1665
1666         /* Get this chnlgrp's rate-to-max/clip-powers table */
1667         clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1668
1669         /* Get this channel's rate-to-current-power settings table */
1670         power_info = ch_info->power_info;
1671
1672         /* update OFDM Txpower settings */
1673         for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1674              i++, ++power_info) {
1675                 int delta_idx;
1676
1677                 /* limit new power to be no more than h/w capability */
1678                 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1679                 if (power == power_info->requested_power)
1680                         continue;
1681
1682                 /* find difference between old and new requested powers,
1683                  *    update base (non-temp-compensated) power index */
1684                 delta_idx = (power - power_info->requested_power) * 2;
1685                 power_info->base_power_index -= delta_idx;
1686
1687                 /* save new requested power value */
1688                 power_info->requested_power = power;
1689
1690                 power_changed = 1;
1691         }
1692
1693         /* update CCK Txpower settings, based on OFDM 12M setting ...
1694          *    ... all CCK power settings for a given channel are the *same*. */
1695         if (power_changed) {
1696                 power =
1697                     ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1698                     requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1699
1700                 /* do all CCK rates' iwl3945_channel_power_info structures */
1701                 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1702                         power_info->requested_power = power;
1703                         power_info->base_power_index =
1704                             ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1705                             base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1706                         ++power_info;
1707                 }
1708         }
1709
1710         return 0;
1711 }
1712
1713 /**
1714  * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1715  *
1716  * NOTE: Returned power limit may be less (but not more) than requested,
1717  *       based strictly on regulatory (eeprom and spectrum mgt) limitations
1718  *       (no consideration for h/w clipping limitations).
1719  */
1720 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1721 {
1722         s8 max_power;
1723
1724 #if 0
1725         /* if we're using TGd limits, use lower of TGd or EEPROM */
1726         if (ch_info->tgd_data.max_power != 0)
1727                 max_power = min(ch_info->tgd_data.max_power,
1728                                 ch_info->eeprom.max_power_avg);
1729
1730         /* else just use EEPROM limits */
1731         else
1732 #endif
1733                 max_power = ch_info->eeprom.max_power_avg;
1734
1735         return min(max_power, ch_info->max_power_avg);
1736 }
1737
1738 /**
1739  * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1740  *
1741  * Compensate txpower settings of *all* channels for temperature.
1742  * This only accounts for the difference between current temperature
1743  *   and the factory calibration temperatures, and bases the new settings
1744  *   on the channel's base_power_index.
1745  *
1746  * If RxOn is "associated", this sends the new Txpower to NIC!
1747  */
1748 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1749 {
1750         struct iwl_channel_info *ch_info = NULL;
1751         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1752         int delta_index;
1753         const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1754         u8 a_band;
1755         u8 rate_index;
1756         u8 scan_tbl_index;
1757         u8 i;
1758         int ref_temp;
1759         int temperature = priv->temperature;
1760
1761         /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1762         for (i = 0; i < priv->channel_count; i++) {
1763                 ch_info = &priv->channel_info[i];
1764                 a_band = is_channel_a_band(ch_info);
1765
1766                 /* Get this chnlgrp's factory calibration temperature */
1767                 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1768                     temperature;
1769
1770                 /* get power index adjustment based on current and factory
1771                  * temps */
1772                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1773                                                               ref_temp);
1774
1775                 /* set tx power value for all rates, OFDM and CCK */
1776                 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1777                      rate_index++) {
1778                         int power_idx =
1779                             ch_info->power_info[rate_index].base_power_index;
1780
1781                         /* temperature compensate */
1782                         power_idx += delta_index;
1783
1784                         /* stay within table range */
1785                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1786                         ch_info->power_info[rate_index].
1787                             power_table_index = (u8) power_idx;
1788                         ch_info->power_info[rate_index].tpc =
1789                             power_gain_table[a_band][power_idx];
1790                 }
1791
1792                 /* Get this chnlgrp's rate-to-max/clip-powers table */
1793                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1794
1795                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1796                 for (scan_tbl_index = 0;
1797                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1798                         s32 actual_index = (scan_tbl_index == 0) ?
1799                             IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1800                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1801                                            actual_index, clip_pwrs,
1802                                            ch_info, a_band);
1803                 }
1804         }
1805
1806         /* send Txpower command for current channel to ucode */
1807         return priv->cfg->ops->lib->send_tx_power(priv);
1808 }
1809
1810 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1811 {
1812         struct iwl_channel_info *ch_info;
1813         s8 max_power;
1814         u8 a_band;
1815         u8 i;
1816
1817         if (priv->tx_power_user_lmt == power) {
1818                 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1819                                 "limit: %ddBm.\n", power);
1820                 return 0;
1821         }
1822
1823         IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1824         priv->tx_power_user_lmt = power;
1825
1826         /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1827
1828         for (i = 0; i < priv->channel_count; i++) {
1829                 ch_info = &priv->channel_info[i];
1830                 a_band = is_channel_a_band(ch_info);
1831
1832                 /* find minimum power of all user and regulatory constraints
1833                  *    (does not consider h/w clipping limitations) */
1834                 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1835                 max_power = min(power, max_power);
1836                 if (max_power != ch_info->curr_txpow) {
1837                         ch_info->curr_txpow = max_power;
1838
1839                         /* this considers the h/w clipping limitations */
1840                         iwl3945_hw_reg_set_new_power(priv, ch_info);
1841                 }
1842         }
1843
1844         /* update txpower settings for all channels,
1845          *   send to NIC if associated. */
1846         is_temp_calib_needed(priv);
1847         iwl3945_hw_reg_comp_txpower_temp(priv);
1848
1849         return 0;
1850 }
1851
1852 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
1853 {
1854         int rc = 0;
1855         struct iwl_rx_packet *res = NULL;
1856         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1857         struct iwl_host_cmd cmd = {
1858                 .id = REPLY_RXON_ASSOC,
1859                 .len = sizeof(rxon_assoc),
1860                 .meta.flags = CMD_WANT_SKB,
1861                 .data = &rxon_assoc,
1862         };
1863         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1864         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1865
1866         if ((rxon1->flags == rxon2->flags) &&
1867             (rxon1->filter_flags == rxon2->filter_flags) &&
1868             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1869             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1870                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1871                 return 0;
1872         }
1873
1874         rxon_assoc.flags = priv->staging_rxon.flags;
1875         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1876         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1877         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1878         rxon_assoc.reserved = 0;
1879
1880         rc = iwl_send_cmd_sync(priv, &cmd);
1881         if (rc)
1882                 return rc;
1883
1884         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1885         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1886                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
1887                 rc = -EIO;
1888         }
1889
1890         priv->alloc_rxb_skb--;
1891         dev_kfree_skb_any(cmd.meta.u.skb);
1892
1893         return rc;
1894 }
1895
1896 /**
1897  * iwl3945_commit_rxon - commit staging_rxon to hardware
1898  *
1899  * The RXON command in staging_rxon is committed to the hardware and
1900  * the active_rxon structure is updated with the new data.  This
1901  * function correctly transitions out of the RXON_ASSOC_MSK state if
1902  * a HW tune is required based on the RXON structure changes.
1903  */
1904 static int iwl3945_commit_rxon(struct iwl_priv *priv)
1905 {
1906         /* cast away the const for active_rxon in this function */
1907         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1908         struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
1909         int rc = 0;
1910         bool new_assoc =
1911                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
1912
1913         if (!iwl_is_alive(priv))
1914                 return -1;
1915
1916         /* always get timestamp with Rx frame */
1917         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1918
1919         /* select antenna */
1920         staging_rxon->flags &=
1921             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1922         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
1923
1924         rc = iwl_check_rxon_cmd(priv);
1925         if (rc) {
1926                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
1927                 return -EINVAL;
1928         }
1929
1930         /* If we don't need to send a full RXON, we can use
1931          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1932          * and other flags for the current radio configuration. */
1933         if (!iwl_full_rxon_required(priv)) {
1934                 rc = iwl_send_rxon_assoc(priv);
1935                 if (rc) {
1936                         IWL_ERR(priv, "Error setting RXON_ASSOC "
1937                                   "configuration (%d).\n", rc);
1938                         return rc;
1939                 }
1940
1941                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1942
1943                 return 0;
1944         }
1945
1946         /* If we are currently associated and the new config requires
1947          * an RXON_ASSOC and the new config wants the associated mask enabled,
1948          * we must clear the associated from the active configuration
1949          * before we apply the new config */
1950         if (iwl_is_associated(priv) && new_assoc) {
1951                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
1952                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1953
1954                 /*
1955                  * reserved4 and 5 could have been filled by the iwlcore code.
1956                  * Let's clear them before pushing to the 3945.
1957                  */
1958                 active_rxon->reserved4 = 0;
1959                 active_rxon->reserved5 = 0;
1960                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1961                                       sizeof(struct iwl3945_rxon_cmd),
1962                                       &priv->active_rxon);
1963
1964                 /* If the mask clearing failed then we set
1965                  * active_rxon back to what it was previously */
1966                 if (rc) {
1967                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1968                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
1969                                   "configuration (%d).\n", rc);
1970                         return rc;
1971                 }
1972         }
1973
1974         IWL_DEBUG_INFO(priv, "Sending RXON\n"
1975                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1976                        "* channel = %d\n"
1977                        "* bssid = %pM\n",
1978                        (new_assoc ? "" : "out"),
1979                        le16_to_cpu(staging_rxon->channel),
1980                        staging_rxon->bssid_addr);
1981
1982         /*
1983          * reserved4 and 5 could have been filled by the iwlcore code.
1984          * Let's clear them before pushing to the 3945.
1985          */
1986         staging_rxon->reserved4 = 0;
1987         staging_rxon->reserved5 = 0;
1988
1989         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
1990
1991         /* Apply the new configuration */
1992         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1993                               sizeof(struct iwl3945_rxon_cmd),
1994                               staging_rxon);
1995         if (rc) {
1996                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
1997                 return rc;
1998         }
1999
2000         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
2001
2002         iwl_clear_stations_table(priv);
2003
2004         /* If we issue a new RXON command which required a tune then we must
2005          * send a new TXPOWER command or we won't be able to Tx any frames */
2006         rc = priv->cfg->ops->lib->send_tx_power(priv);
2007         if (rc) {
2008                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
2009                 return rc;
2010         }
2011
2012         /* Add the broadcast address so we can send broadcast frames */
2013         if (iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL) ==
2014             IWL_INVALID_STATION) {
2015                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
2016                 return -EIO;
2017         }
2018
2019         /* If we have set the ASSOC_MSK and we are in BSS mode then
2020          * add the IWL_AP_ID to the station rate table */
2021         if (iwl_is_associated(priv) &&
2022             (priv->iw_mode == NL80211_IFTYPE_STATION))
2023                 if (iwl_add_station(priv, priv->active_rxon.bssid_addr,
2024                                 true, CMD_SYNC, NULL) == IWL_INVALID_STATION) {
2025                         IWL_ERR(priv, "Error adding AP address for transmit\n");
2026                         return -EIO;
2027                 }
2028
2029         /* Init the hardware's rate fallback order based on the band */
2030         rc = iwl3945_init_hw_rate_table(priv);
2031         if (rc) {
2032                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
2033                 return -EIO;
2034         }
2035
2036         return 0;
2037 }
2038
2039 /* will add 3945 channel switch cmd handling later */
2040 int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel)
2041 {
2042         return 0;
2043 }
2044
2045 /**
2046  * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
2047  *
2048  * -- reset periodic timer
2049  * -- see if temp has changed enough to warrant re-calibration ... if so:
2050  *     -- correct coeffs for temp (can reset temp timer)
2051  *     -- save this temp as "last",
2052  *     -- send new set of gain settings to NIC
2053  * NOTE:  This should continue working, even when we're not associated,
2054  *   so we can keep our internal table of scan powers current. */
2055 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
2056 {
2057         /* This will kick in the "brute force"
2058          * iwl3945_hw_reg_comp_txpower_temp() below */
2059         if (!is_temp_calib_needed(priv))
2060                 goto reschedule;
2061
2062         /* Set up a new set of temp-adjusted TxPowers, send to NIC.
2063          * This is based *only* on current temperature,
2064          * ignoring any previous power measurements */
2065         iwl3945_hw_reg_comp_txpower_temp(priv);
2066
2067  reschedule:
2068         queue_delayed_work(priv->workqueue,
2069                            &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
2070 }
2071
2072 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
2073 {
2074         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2075                                              thermal_periodic.work);
2076
2077         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2078                 return;
2079
2080         mutex_lock(&priv->mutex);
2081         iwl3945_reg_txpower_periodic(priv);
2082         mutex_unlock(&priv->mutex);
2083 }
2084
2085 /**
2086  * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2087  *                                 for the channel.
2088  *
2089  * This function is used when initializing channel-info structs.
2090  *
2091  * NOTE: These channel groups do *NOT* match the bands above!
2092  *       These channel groups are based on factory-tested channels;
2093  *       on A-band, EEPROM's "group frequency" entries represent the top
2094  *       channel in each group 1-4.  Group 5 All B/G channels are in group 0.
2095  */
2096 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
2097                                        const struct iwl_channel_info *ch_info)
2098 {
2099         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2100         struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
2101         u8 group;
2102         u16 group_index = 0;    /* based on factory calib frequencies */
2103         u8 grp_channel;
2104
2105         /* Find the group index for the channel ... don't use index 1(?) */
2106         if (is_channel_a_band(ch_info)) {
2107                 for (group = 1; group < 5; group++) {
2108                         grp_channel = ch_grp[group].group_channel;
2109                         if (ch_info->channel <= grp_channel) {
2110                                 group_index = group;
2111                                 break;
2112                         }
2113                 }
2114                 /* group 4 has a few channels *above* its factory cal freq */
2115                 if (group == 5)
2116                         group_index = 4;
2117         } else
2118                 group_index = 0;        /* 2.4 GHz, group 0 */
2119
2120         IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
2121                         group_index);
2122         return group_index;
2123 }
2124
2125 /**
2126  * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2127  *
2128  * Interpolate to get nominal (i.e. at factory calibration temperature) index
2129  *   into radio/DSP gain settings table for requested power.
2130  */
2131 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
2132                                        s8 requested_power,
2133                                        s32 setting_index, s32 *new_index)
2134 {
2135         const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2136         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2137         s32 index0, index1;
2138         s32 power = 2 * requested_power;
2139         s32 i;
2140         const struct iwl3945_eeprom_txpower_sample *samples;
2141         s32 gains0, gains1;
2142         s32 res;
2143         s32 denominator;
2144
2145         chnl_grp = &eeprom->groups[setting_index];
2146         samples = chnl_grp->samples;
2147         for (i = 0; i < 5; i++) {
2148                 if (power == samples[i].power) {
2149                         *new_index = samples[i].gain_index;
2150                         return 0;
2151                 }
2152         }
2153
2154         if (power > samples[1].power) {
2155                 index0 = 0;
2156                 index1 = 1;
2157         } else if (power > samples[2].power) {
2158                 index0 = 1;
2159                 index1 = 2;
2160         } else if (power > samples[3].power) {
2161                 index0 = 2;
2162                 index1 = 3;
2163         } else {
2164                 index0 = 3;
2165                 index1 = 4;
2166         }
2167
2168         denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2169         if (denominator == 0)
2170                 return -EINVAL;
2171         gains0 = (s32) samples[index0].gain_index * (1 << 19);
2172         gains1 = (s32) samples[index1].gain_index * (1 << 19);
2173         res = gains0 + (gains1 - gains0) *
2174             ((s32) power - (s32) samples[index0].power) / denominator +
2175             (1 << 18);
2176         *new_index = res >> 19;
2177         return 0;
2178 }
2179
2180 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2181 {
2182         u32 i;
2183         s32 rate_index;
2184         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2185         const struct iwl3945_eeprom_txpower_group *group;
2186
2187         IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
2188
2189         for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2190                 s8 *clip_pwrs;  /* table of power levels for each rate */
2191                 s8 satur_pwr;   /* saturation power for each chnl group */
2192                 group = &eeprom->groups[i];
2193
2194                 /* sanity check on factory saturation power value */
2195                 if (group->saturation_power < 40) {
2196                         IWL_WARN(priv, "Error: saturation power is %d, "
2197                                     "less than minimum expected 40\n",
2198                                     group->saturation_power);
2199                         return;
2200                 }
2201
2202                 /*
2203                  * Derive requested power levels for each rate, based on
2204                  *   hardware capabilities (saturation power for band).
2205                  * Basic value is 3dB down from saturation, with further
2206                  *   power reductions for highest 3 data rates.  These
2207                  *   backoffs provide headroom for high rate modulation
2208                  *   power peaks, without too much distortion (clipping).
2209                  */
2210                 /* we'll fill in this array with h/w max power levels */
2211                 clip_pwrs = (s8 *) priv->clip39_groups[i].clip_powers;
2212
2213                 /* divide factory saturation power by 2 to find -3dB level */
2214                 satur_pwr = (s8) (group->saturation_power >> 1);
2215
2216                 /* fill in channel group's nominal powers for each rate */
2217                 for (rate_index = 0;
2218                      rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
2219                         switch (rate_index) {
2220                         case IWL_RATE_36M_INDEX_TABLE:
2221                                 if (i == 0)     /* B/G */
2222                                         *clip_pwrs = satur_pwr;
2223                                 else    /* A */
2224                                         *clip_pwrs = satur_pwr - 5;
2225                                 break;
2226                         case IWL_RATE_48M_INDEX_TABLE:
2227                                 if (i == 0)
2228                                         *clip_pwrs = satur_pwr - 7;
2229                                 else
2230                                         *clip_pwrs = satur_pwr - 10;
2231                                 break;
2232                         case IWL_RATE_54M_INDEX_TABLE:
2233                                 if (i == 0)
2234                                         *clip_pwrs = satur_pwr - 9;
2235                                 else
2236                                         *clip_pwrs = satur_pwr - 12;
2237                                 break;
2238                         default:
2239                                 *clip_pwrs = satur_pwr;
2240                                 break;
2241                         }
2242                 }
2243         }
2244 }
2245
2246 /**
2247  * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2248  *
2249  * Second pass (during init) to set up priv->channel_info
2250  *
2251  * Set up Tx-power settings in our channel info database for each VALID
2252  * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2253  * and current temperature.
2254  *
2255  * Since this is based on current temperature (at init time), these values may
2256  * not be valid for very long, but it gives us a starting/default point,
2257  * and allows us to active (i.e. using Tx) scan.
2258  *
2259  * This does *not* write values to NIC, just sets up our internal table.
2260  */
2261 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2262 {
2263         struct iwl_channel_info *ch_info = NULL;
2264         struct iwl3945_channel_power_info *pwr_info;
2265         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2266         int delta_index;
2267         u8 rate_index;
2268         u8 scan_tbl_index;
2269         const s8 *clip_pwrs;    /* array of power levels for each rate */
2270         u8 gain, dsp_atten;
2271         s8 power;
2272         u8 pwr_index, base_pwr_index, a_band;
2273         u8 i;
2274         int temperature;
2275
2276         /* save temperature reference,
2277          *   so we can determine next time to calibrate */
2278         temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2279         priv->last_temperature = temperature;
2280
2281         iwl3945_hw_reg_init_channel_groups(priv);
2282
2283         /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2284         for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2285              i++, ch_info++) {
2286                 a_band = is_channel_a_band(ch_info);
2287                 if (!is_channel_valid(ch_info))
2288                         continue;
2289
2290                 /* find this channel's channel group (*not* "band") index */
2291                 ch_info->group_index =
2292                         iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2293
2294                 /* Get this chnlgrp's rate->max/clip-powers table */
2295                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
2296
2297                 /* calculate power index *adjustment* value according to
2298                  *  diff between current temperature and factory temperature */
2299                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2300                                 eeprom->groups[ch_info->group_index].
2301                                 temperature);
2302
2303                 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2304                                 ch_info->channel, delta_index, temperature +
2305                                 IWL_TEMP_CONVERT);
2306
2307                 /* set tx power value for all OFDM rates */
2308                 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2309                      rate_index++) {
2310                         s32 uninitialized_var(power_idx);
2311                         int rc;
2312
2313                         /* use channel group's clip-power table,
2314                          *   but don't exceed channel's max power */
2315                         s8 pwr = min(ch_info->max_power_avg,
2316                                      clip_pwrs[rate_index]);
2317
2318                         pwr_info = &ch_info->power_info[rate_index];
2319
2320                         /* get base (i.e. at factory-measured temperature)
2321                          *    power table index for this rate's power */
2322                         rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2323                                                          ch_info->group_index,
2324                                                          &power_idx);
2325                         if (rc) {
2326                                 IWL_ERR(priv, "Invalid power index\n");
2327                                 return rc;
2328                         }
2329                         pwr_info->base_power_index = (u8) power_idx;
2330
2331                         /* temperature compensate */
2332                         power_idx += delta_index;
2333
2334                         /* stay within range of gain table */
2335                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2336
2337                         /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2338                         pwr_info->requested_power = pwr;
2339                         pwr_info->power_table_index = (u8) power_idx;
2340                         pwr_info->tpc.tx_gain =
2341                             power_gain_table[a_band][power_idx].tx_gain;
2342                         pwr_info->tpc.dsp_atten =
2343                             power_gain_table[a_band][power_idx].dsp_atten;
2344                 }
2345
2346                 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2347                 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2348                 power = pwr_info->requested_power +
2349                         IWL_CCK_FROM_OFDM_POWER_DIFF;
2350                 pwr_index = pwr_info->power_table_index +
2351                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2352                 base_pwr_index = pwr_info->base_power_index +
2353                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2354
2355                 /* stay within table range */
2356                 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2357                 gain = power_gain_table[a_band][pwr_index].tx_gain;
2358                 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2359
2360                 /* fill each CCK rate's iwl3945_channel_power_info structure
2361                  * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
2362                  * NOTE:  CCK rates start at end of OFDM rates! */
2363                 for (rate_index = 0;
2364                      rate_index < IWL_CCK_RATES; rate_index++) {
2365                         pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2366                         pwr_info->requested_power = power;
2367                         pwr_info->power_table_index = pwr_index;
2368                         pwr_info->base_power_index = base_pwr_index;
2369                         pwr_info->tpc.tx_gain = gain;
2370                         pwr_info->tpc.dsp_atten = dsp_atten;
2371                 }
2372
2373                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2374                 for (scan_tbl_index = 0;
2375                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2376                         s32 actual_index = (scan_tbl_index == 0) ?
2377                                 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2378                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2379                                 actual_index, clip_pwrs, ch_info, a_band);
2380                 }
2381         }
2382
2383         return 0;
2384 }
2385
2386 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2387 {
2388         int rc;
2389
2390         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2391         rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2392                         FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2393         if (rc < 0)
2394                 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2395
2396         return 0;
2397 }
2398
2399 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2400 {
2401         int txq_id = txq->q.id;
2402
2403         struct iwl3945_shared *shared_data = priv->shared_virt;
2404
2405         shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2406
2407         iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2408         iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2409
2410         iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2411                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2412                 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2413                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2414                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2415                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2416
2417         /* fake read to flush all prev. writes */
2418         iwl_read32(priv, FH39_TSSR_CBB_BASE);
2419
2420         return 0;
2421 }
2422
2423 /*
2424  * HCMD utils
2425  */
2426 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2427 {
2428         switch (cmd_id) {
2429         case REPLY_RXON:
2430                 return sizeof(struct iwl3945_rxon_cmd);
2431         case POWER_TABLE_CMD:
2432                 return sizeof(struct iwl3945_powertable_cmd);
2433         default:
2434                 return len;
2435         }
2436 }
2437
2438
2439 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2440 {
2441         struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
2442         addsta->mode = cmd->mode;
2443         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
2444         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
2445         addsta->station_flags = cmd->station_flags;
2446         addsta->station_flags_msk = cmd->station_flags_msk;
2447         addsta->tid_disable_tx = cpu_to_le16(0);
2448         addsta->rate_n_flags = cmd->rate_n_flags;
2449         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2450         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2451         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2452
2453         return (u16)sizeof(struct iwl3945_addsta_cmd);
2454 }
2455
2456
2457 /**
2458  * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2459  */
2460 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2461 {
2462         int rc, i, index, prev_index;
2463         struct iwl3945_rate_scaling_cmd rate_cmd = {
2464                 .reserved = {0, 0, 0},
2465         };
2466         struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2467
2468         for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2469                 index = iwl3945_rates[i].table_rs_index;
2470
2471                 table[index].rate_n_flags =
2472                         iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2473                 table[index].try_cnt = priv->retry_rate;
2474                 prev_index = iwl3945_get_prev_ieee_rate(i);
2475                 table[index].next_rate_index =
2476                                 iwl3945_rates[prev_index].table_rs_index;
2477         }
2478
2479         switch (priv->band) {
2480         case IEEE80211_BAND_5GHZ:
2481                 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2482                 /* If one of the following CCK rates is used,
2483                  * have it fall back to the 6M OFDM rate */
2484                 for (i = IWL_RATE_1M_INDEX_TABLE;
2485                         i <= IWL_RATE_11M_INDEX_TABLE; i++)
2486                         table[i].next_rate_index =
2487                           iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2488
2489                 /* Don't fall back to CCK rates */
2490                 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2491                                                 IWL_RATE_9M_INDEX_TABLE;
2492
2493                 /* Don't drop out of OFDM rates */
2494                 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2495                     iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2496                 break;
2497
2498         case IEEE80211_BAND_2GHZ:
2499                 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2500                 /* If an OFDM rate is used, have it fall back to the
2501                  * 1M CCK rates */
2502
2503                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2504                     iwl_is_associated(priv)) {
2505
2506                         index = IWL_FIRST_CCK_RATE;
2507                         for (i = IWL_RATE_6M_INDEX_TABLE;
2508                              i <= IWL_RATE_54M_INDEX_TABLE; i++)
2509                                 table[i].next_rate_index =
2510                                         iwl3945_rates[index].table_rs_index;
2511
2512                         index = IWL_RATE_11M_INDEX_TABLE;
2513                         /* CCK shouldn't fall back to OFDM... */
2514                         table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2515                 }
2516                 break;
2517
2518         default:
2519                 WARN_ON(1);
2520                 break;
2521         }
2522
2523         /* Update the rate scaling for control frame Tx */
2524         rate_cmd.table_id = 0;
2525         rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2526                               &rate_cmd);
2527         if (rc)
2528                 return rc;
2529
2530         /* Update the rate scaling for data frame Tx */
2531         rate_cmd.table_id = 1;
2532         return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2533                                 &rate_cmd);
2534 }
2535
2536 /* Called when initializing driver */
2537 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2538 {
2539         memset((void *)&priv->hw_params, 0,
2540                sizeof(struct iwl_hw_params));
2541
2542         priv->shared_virt =
2543             pci_alloc_consistent(priv->pci_dev,
2544                                  sizeof(struct iwl3945_shared),
2545                                  &priv->shared_phys);
2546
2547         if (!priv->shared_virt) {
2548                 IWL_ERR(priv, "failed to allocate pci memory\n");
2549                 mutex_unlock(&priv->mutex);
2550                 return -ENOMEM;
2551         }
2552
2553         /* Assign number of Usable TX queues */
2554         priv->hw_params.max_txq_num = TFD_QUEUE_MAX;
2555
2556         priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2557         priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_3K;
2558         priv->hw_params.max_pkt_size = 2342;
2559         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2560         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2561         priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2562         priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID;
2563
2564         priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2565
2566         return 0;
2567 }
2568
2569 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2570                           struct iwl3945_frame *frame, u8 rate)
2571 {
2572         struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2573         unsigned int frame_size;
2574
2575         tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2576         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2577
2578         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2579         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2580
2581         frame_size = iwl3945_fill_beacon_frame(priv,
2582                                 tx_beacon_cmd->frame,
2583                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2584
2585         BUG_ON(frame_size > MAX_MPDU_SIZE);
2586         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2587
2588         tx_beacon_cmd->tx.rate = rate;
2589         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2590                                       TX_CMD_FLG_TSF_MSK);
2591
2592         /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2593         tx_beacon_cmd->tx.supp_rates[0] =
2594                 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2595
2596         tx_beacon_cmd->tx.supp_rates[1] =
2597                 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2598
2599         return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2600 }
2601
2602 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2603 {
2604         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2605         priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2606 }
2607
2608 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2609 {
2610         INIT_DELAYED_WORK(&priv->thermal_periodic,
2611                           iwl3945_bg_reg_txpower_periodic);
2612 }
2613
2614 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2615 {
2616         cancel_delayed_work(&priv->thermal_periodic);
2617 }
2618
2619 /* check contents of special bootstrap uCode SRAM */
2620 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2621  {
2622         __le32 *image = priv->ucode_boot.v_addr;
2623         u32 len = priv->ucode_boot.len;
2624         u32 reg;
2625         u32 val;
2626
2627         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2628
2629         /* verify BSM SRAM contents */
2630         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2631         for (reg = BSM_SRAM_LOWER_BOUND;
2632              reg < BSM_SRAM_LOWER_BOUND + len;
2633              reg += sizeof(u32), image++) {
2634                 val = iwl_read_prph(priv, reg);
2635                 if (val != le32_to_cpu(*image)) {
2636                         IWL_ERR(priv, "BSM uCode verification failed at "
2637                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2638                                   BSM_SRAM_LOWER_BOUND,
2639                                   reg - BSM_SRAM_LOWER_BOUND, len,
2640                                   val, le32_to_cpu(*image));
2641                         return -EIO;
2642                 }
2643         }
2644
2645         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2646
2647         return 0;
2648 }
2649
2650
2651 /******************************************************************************
2652  *
2653  * EEPROM related functions
2654  *
2655  ******************************************************************************/
2656
2657 /*
2658  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2659  * embedded controller) as EEPROM reader; each read is a series of pulses
2660  * to/from the EEPROM chip, not a single event, so even reads could conflict
2661  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
2662  * simply claims ownership, which should be safe when this function is called
2663  * (i.e. before loading uCode!).
2664  */
2665 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2666 {
2667         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2668         return 0;
2669 }
2670
2671
2672 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2673 {
2674         return;
2675 }
2676
2677  /**
2678   * iwl3945_load_bsm - Load bootstrap instructions
2679   *
2680   * BSM operation:
2681   *
2682   * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2683   * in special SRAM that does not power down during RFKILL.  When powering back
2684   * up after power-saving sleeps (or during initial uCode load), the BSM loads
2685   * the bootstrap program into the on-board processor, and starts it.
2686   *
2687   * The bootstrap program loads (via DMA) instructions and data for a new
2688   * program from host DRAM locations indicated by the host driver in the
2689   * BSM_DRAM_* registers.  Once the new program is loaded, it starts
2690   * automatically.
2691   *
2692   * When initializing the NIC, the host driver points the BSM to the
2693   * "initialize" uCode image.  This uCode sets up some internal data, then
2694   * notifies host via "initialize alive" that it is complete.
2695   *
2696   * The host then replaces the BSM_DRAM_* pointer values to point to the
2697   * normal runtime uCode instructions and a backup uCode data cache buffer
2698   * (filled initially with starting data values for the on-board processor),
2699   * then triggers the "initialize" uCode to load and launch the runtime uCode,
2700   * which begins normal operation.
2701   *
2702   * When doing a power-save shutdown, runtime uCode saves data SRAM into
2703   * the backup data cache in DRAM before SRAM is powered down.
2704   *
2705   * When powering back up, the BSM loads the bootstrap program.  This reloads
2706   * the runtime uCode instructions and the backup data cache into SRAM,
2707   * and re-launches the runtime uCode from where it left off.
2708   */
2709 static int iwl3945_load_bsm(struct iwl_priv *priv)
2710 {
2711         __le32 *image = priv->ucode_boot.v_addr;
2712         u32 len = priv->ucode_boot.len;
2713         dma_addr_t pinst;
2714         dma_addr_t pdata;
2715         u32 inst_len;
2716         u32 data_len;
2717         int rc;
2718         int i;
2719         u32 done;
2720         u32 reg_offset;
2721
2722         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2723
2724         /* make sure bootstrap program is no larger than BSM's SRAM size */
2725         if (len > IWL39_MAX_BSM_SIZE)
2726                 return -EINVAL;
2727
2728         /* Tell bootstrap uCode where to find the "Initialize" uCode
2729         *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2730         * NOTE:  iwl3945_initialize_alive_start() will replace these values,
2731         *        after the "initialize" uCode has run, to point to
2732         *        runtime/protocol instructions and backup data cache. */
2733         pinst = priv->ucode_init.p_addr;
2734         pdata = priv->ucode_init_data.p_addr;
2735         inst_len = priv->ucode_init.len;
2736         data_len = priv->ucode_init_data.len;
2737
2738         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2739         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2740         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2741         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2742
2743         /* Fill BSM memory with bootstrap instructions */
2744         for (reg_offset = BSM_SRAM_LOWER_BOUND;
2745              reg_offset < BSM_SRAM_LOWER_BOUND + len;
2746              reg_offset += sizeof(u32), image++)
2747                 _iwl_write_prph(priv, reg_offset,
2748                                           le32_to_cpu(*image));
2749
2750         rc = iwl3945_verify_bsm(priv);
2751         if (rc)
2752                 return rc;
2753
2754         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2755         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2756         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2757                                  IWL39_RTC_INST_LOWER_BOUND);
2758         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2759
2760         /* Load bootstrap code into instruction SRAM now,
2761          *   to prepare to load "initialize" uCode */
2762         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2763                 BSM_WR_CTRL_REG_BIT_START);
2764
2765         /* Wait for load of bootstrap uCode to finish */
2766         for (i = 0; i < 100; i++) {
2767                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2768                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2769                         break;
2770                 udelay(10);
2771         }
2772         if (i < 100)
2773                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2774         else {
2775                 IWL_ERR(priv, "BSM write did not complete!\n");
2776                 return -EIO;
2777         }
2778
2779         /* Enable future boot loads whenever power management unit triggers it
2780          *   (e.g. when powering back up after power-save shutdown) */
2781         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2782                 BSM_WR_CTRL_REG_BIT_START_EN);
2783
2784         return 0;
2785 }
2786
2787 static struct iwl_hcmd_ops iwl3945_hcmd = {
2788         .rxon_assoc = iwl3945_send_rxon_assoc,
2789         .commit_rxon = iwl3945_commit_rxon,
2790 };
2791
2792 static struct iwl_lib_ops iwl3945_lib = {
2793         .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2794         .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2795         .txq_init = iwl3945_hw_tx_queue_init,
2796         .load_ucode = iwl3945_load_bsm,
2797         .apm_ops = {
2798                 .init = iwl3945_apm_init,
2799                 .reset = iwl3945_apm_reset,
2800                 .stop = iwl3945_apm_stop,
2801                 .config = iwl3945_nic_config,
2802                 .set_pwr_src = iwl3945_set_pwr_src,
2803         },
2804         .eeprom_ops = {
2805                 .regulatory_bands = {
2806                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2807                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2808                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2809                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2810                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2811                         EEPROM_REGULATORY_BAND_NO_FAT,
2812                         EEPROM_REGULATORY_BAND_NO_FAT,
2813                 },
2814                 .verify_signature  = iwlcore_eeprom_verify_signature,
2815                 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2816                 .release_semaphore = iwl3945_eeprom_release_semaphore,
2817                 .query_addr = iwlcore_eeprom_query_addr,
2818         },
2819         .send_tx_power  = iwl3945_send_tx_power,
2820         .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2821         .post_associate = iwl3945_post_associate,
2822         .isr = iwl_isr_legacy,
2823         .config_ap = iwl3945_config_ap,
2824 };
2825
2826 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2827         .get_hcmd_size = iwl3945_get_hcmd_size,
2828         .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2829 };
2830
2831 static struct iwl_ops iwl3945_ops = {
2832         .lib = &iwl3945_lib,
2833         .hcmd = &iwl3945_hcmd,
2834         .utils = &iwl3945_hcmd_utils,
2835 };
2836
2837 static struct iwl_cfg iwl3945_bg_cfg = {
2838         .name = "3945BG",
2839         .fw_name_pre = IWL3945_FW_PRE,
2840         .ucode_api_max = IWL3945_UCODE_API_MAX,
2841         .ucode_api_min = IWL3945_UCODE_API_MIN,
2842         .sku = IWL_SKU_G,
2843         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2844         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2845         .ops = &iwl3945_ops,
2846         .mod_params = &iwl3945_mod_params,
2847         .use_isr_legacy = true
2848 };
2849
2850 static struct iwl_cfg iwl3945_abg_cfg = {
2851         .name = "3945ABG",
2852         .fw_name_pre = IWL3945_FW_PRE,
2853         .ucode_api_max = IWL3945_UCODE_API_MAX,
2854         .ucode_api_min = IWL3945_UCODE_API_MIN,
2855         .sku = IWL_SKU_A|IWL_SKU_G,
2856         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2857         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2858         .ops = &iwl3945_ops,
2859         .mod_params = &iwl3945_mod_params,
2860         .use_isr_legacy = true
2861 };
2862
2863 struct pci_device_id iwl3945_hw_card_ids[] = {
2864         {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2865         {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2866         {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2867         {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2868         {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2869         {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2870         {0}
2871 };
2872
2873 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);