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 ret;
 102         int i;
 103         u32 base;               /* SRAM address of event log header */
 104         u32 disable_ptr;        /* SRAM address of event-disable bitmap array */
 105         u32 array_size;         /* # of u32 entries in array */
 106         u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
 107                 0x00000000,     /*   31 -    0  Event id numbers */
 108                 0x00000000,     /*   63 -   32 */
 109                 0x00000000,     /*   95 -   64 */
 110                 0x00000000,     /*  127 -   96 */
 111                 0x00000000,     /*  159 -  128 */
 112                 0x00000000,     /*  191 -  160 */
 113                 0x00000000,     /*  223 -  192 */
 114                 0x00000000,     /*  255 -  224 */
 115                 0x00000000,     /*  287 -  256 */
 116                 0x00000000,     /*  319 -  288 */
 117                 0x00000000,     /*  351 -  320 */
 118                 0x00000000,     /*  383 -  352 */
 119                 0x00000000,     /*  415 -  384 */
 120                 0x00000000,     /*  447 -  416 */
 121                 0x00000000,     /*  479 -  448 */
 122                 0x00000000,     /*  511 -  480 */
 123                 0x00000000,     /*  543 -  512 */
 124                 0x00000000,     /*  575 -  544 */
 125                 0x00000000,     /*  607 -  576 */
 126                 0x00000000,     /*  639 -  608 */
 127                 0x00000000,     /*  671 -  640 */
 128                 0x00000000,     /*  703 -  672 */
 129                 0x00000000,     /*  735 -  704 */
 130                 0x00000000,     /*  767 -  736 */
 131                 0x00000000,     /*  799 -  768 */
 132                 0x00000000,     /*  831 -  800 */
 133                 0x00000000,     /*  863 -  832 */
 134                 0x00000000,     /*  895 -  864 */
 135                 0x00000000,     /*  927 -  896 */
 136                 0x00000000,     /*  959 -  928 */
 137                 0x00000000,     /*  991 -  960 */
 138                 0x00000000,     /* 1023 -  992 */
 139                 0x00000000,     /* 1055 - 1024 */
 140                 0x00000000,     /* 1087 - 1056 */
 141                 0x00000000,     /* 1119 - 1088 */
 142                 0x00000000,     /* 1151 - 1120 */
 143                 0x00000000,     /* 1183 - 1152 */
 144                 0x00000000,     /* 1215 - 1184 */
 145                 0x00000000,     /* 1247 - 1216 */
 146                 0x00000000,     /* 1279 - 1248 */
 147                 0x00000000,     /* 1311 - 1280 */
 148                 0x00000000,     /* 1343 - 1312 */
 149                 0x00000000,     /* 1375 - 1344 */
 150                 0x00000000,     /* 1407 - 1376 */
 151                 0x00000000,     /* 1439 - 1408 */
 152                 0x00000000,     /* 1471 - 1440 */
 153                 0x00000000,     /* 1503 - 1472 */
 154         };
 155
 156         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 157         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
 158                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
 159                 return;
 160         }
 161
 162         ret = iwl_grab_nic_access(priv);
 163         if (ret) {
 164                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
 165                 return;
 166         }
 167
 168         disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32)));
 169         array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32)));
 170         iwl_release_nic_access(priv);
 171
 172         if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
 173                 IWL_DEBUG_INFO("Disabling selected uCode log events at 0x%x\n",
 174                                disable_ptr);
 175                 ret = iwl_grab_nic_access(priv);
 176                 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
 177                         iwl_write_targ_mem(priv,
 178                                            disable_ptr + (i * sizeof(u32)),
 179                                            evt_disable[i]);
 180
 181                 iwl_release_nic_access(priv);
 182         } else {
 183                 IWL_DEBUG_INFO("Selected uCode log events may be disabled\n");
 184                 IWL_DEBUG_INFO("  by writing \"1\"s into disable bitmap\n");
 185                 IWL_DEBUG_INFO("  in SRAM at 0x%x, size %d u32s\n",
 186                                disable_ptr, array_size);
 187         }
 188
 189 }
 190
 191 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
 192 {
 193         int idx;
 194
 195         for (idx = 0; idx < IWL_RATE_COUNT; idx++)
 196                 if (iwl3945_rates[idx].plcp == plcp)
 197                         return idx;
 198         return -1;
 199 }
 200
 201 #ifdef CONFIG_IWLWIFI_DEBUG
 202 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 203
 204 static const char *iwl3945_get_tx_fail_reason(u32 status)
 205 {
 206         switch (status & TX_STATUS_MSK) {
 207         case TX_STATUS_SUCCESS:
 208                 return "SUCCESS";
 209                 TX_STATUS_ENTRY(SHORT_LIMIT);
 210                 TX_STATUS_ENTRY(LONG_LIMIT);
 211                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 212                 TX_STATUS_ENTRY(MGMNT_ABORT);
 213                 TX_STATUS_ENTRY(NEXT_FRAG);
 214                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 215                 TX_STATUS_ENTRY(DEST_PS);
 216                 TX_STATUS_ENTRY(ABORTED);
 217                 TX_STATUS_ENTRY(BT_RETRY);
 218                 TX_STATUS_ENTRY(STA_INVALID);
 219                 TX_STATUS_ENTRY(FRAG_DROPPED);
 220                 TX_STATUS_ENTRY(TID_DISABLE);
 221                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 222                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 223                 TX_STATUS_ENTRY(TX_LOCKED);
 224                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 225         }
 226
 227         return "UNKNOWN";
 228 }
 229 #else
 230 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
 231 {
 232         return "";
 233 }
 234 #endif
 235
 236 /*
 237  * get ieee prev rate from rate scale table.
 238  * for A and B mode we need to overright prev
 239  * value
 240  */
 241 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
 242 {
 243         int next_rate = iwl3945_get_prev_ieee_rate(rate);
 244
 245         switch (priv->band) {
 246         case IEEE80211_BAND_5GHZ:
 247                 if (rate == IWL_RATE_12M_INDEX)
 248                         next_rate = IWL_RATE_9M_INDEX;
 249                 else if (rate == IWL_RATE_6M_INDEX)
 250                         next_rate = IWL_RATE_6M_INDEX;
 251                 break;
 252         case IEEE80211_BAND_2GHZ:
 253                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
 254                     iwl3945_is_associated(priv)) {
 255                         if (rate == IWL_RATE_11M_INDEX)
 256                                 next_rate = IWL_RATE_5M_INDEX;
 257                 }
 258                 break;
 259
 260         default:
 261                 break;
 262         }
 263
 264         return next_rate;
 265 }
 266
 267
 268 /**
 269  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
 270  *
 271  * When FW advances 'R' index, all entries between old and new 'R' index
 272  * need to be reclaimed. As result, some free space forms. If there is
 273  * enough free space (> low mark), wake the stack that feeds us.
 274  */
 275 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
 276                                      int txq_id, int index)
 277 {
 278         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 279         struct iwl_queue *q = &txq->q;
 280         struct iwl_tx_info *tx_info;
 281
 282         BUG_ON(txq_id == IWL_CMD_QUEUE_NUM);
 283
 284         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
 285                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
 286
 287                 tx_info = &txq->txb[txq->q.read_ptr];
 288                 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
 289                 tx_info->skb[0] = NULL;
 290                 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
 291         }
 292
 293         if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
 294                         (txq_id != IWL_CMD_QUEUE_NUM) &&
 295                         priv->mac80211_registered)
 296                 ieee80211_wake_queue(priv->hw, txq_id);
 297 }
 298
 299 /**
 300  * iwl3945_rx_reply_tx - Handle Tx response
 301  */
 302 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
 303                             struct iwl_rx_mem_buffer *rxb)
 304 {
 305         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 306         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
 307         int txq_id = SEQ_TO_QUEUE(sequence);
 308         int index = SEQ_TO_INDEX(sequence);
 309         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 310         struct ieee80211_tx_info *info;
 311         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
 312         u32  status = le32_to_cpu(tx_resp->status);
 313         int rate_idx;
 314         int fail;
 315
 316         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
 317                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
 318                           "is out of range [0-%d] %d %d\n", txq_id,
 319                           index, txq->q.n_bd, txq->q.write_ptr,
 320                           txq->q.read_ptr);
 321                 return;
 322         }
 323
 324         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
 325         ieee80211_tx_info_clear_status(info);
 326
 327         /* Fill the MRR chain with some info about on-chip retransmissions */
 328         rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
 329         if (info->band == IEEE80211_BAND_5GHZ)
 330                 rate_idx -= IWL_FIRST_OFDM_RATE;
 331
 332         fail = tx_resp->failure_frame;
 333
 334         info->status.rates[0].idx = rate_idx;
 335         info->status.rates[0].count = fail + 1; /* add final attempt */
 336
 337         /* tx_status->rts_retry_count = tx_resp->failure_rts; */
 338         info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
 339                                 IEEE80211_TX_STAT_ACK : 0;
 340
 341         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
 342                         txq_id, iwl3945_get_tx_fail_reason(status), status,
 343                         tx_resp->rate, tx_resp->failure_frame);
 344
 345         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
 346         iwl3945_tx_queue_reclaim(priv, txq_id, index);
 347
 348         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
 349                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
 350 }
 351
 352
 353
 354 /*****************************************************************************
 355  *
 356  * Intel PRO/Wireless 3945ABG/BG Network Connection
 357  *
 358  *  RX handler implementations
 359  *
 360  *****************************************************************************/
 361
 362 void iwl3945_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 363 {
 364         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 365         IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
 366                      (int)sizeof(struct iwl3945_notif_statistics),
 367                      le32_to_cpu(pkt->len));
 368
 369         memcpy(&priv->statistics_39, pkt->u.raw, sizeof(priv->statistics_39));
 370
 371         iwl3945_led_background(priv);
 372
 373         priv->last_statistics_time = jiffies;
 374 }
 375
 376 /******************************************************************************
 377  *
 378  * Misc. internal state and helper functions
 379  *
 380  ******************************************************************************/
 381 #ifdef CONFIG_IWLWIFI_DEBUG
 382
 383 /**
 384  * iwl3945_report_frame - dump frame to syslog during debug sessions
 385  *
 386  * You may hack this function to show different aspects of received frames,
 387  * including selective frame dumps.
 388  * group100 parameter selects whether to show 1 out of 100 good frames.
 389  */
 390 static void _iwl3945_dbg_report_frame(struct iwl_priv *priv,
 391                       struct iwl_rx_packet *pkt,
 392                       struct ieee80211_hdr *header, int group100)
 393 {
 394         u32 to_us;
 395         u32 print_summary = 0;
 396         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
 397         u32 hundred = 0;
 398         u32 dataframe = 0;
 399         __le16 fc;
 400         u16 seq_ctl;
 401         u16 channel;
 402         u16 phy_flags;
 403         u16 length;
 404         u16 status;
 405         u16 bcn_tmr;
 406         u32 tsf_low;
 407         u64 tsf;
 408         u8 rssi;
 409         u8 agc;
 410         u16 sig_avg;
 411         u16 noise_diff;
 412         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 413         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 414         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 415         u8 *data = IWL_RX_DATA(pkt);
 416
 417         /* MAC header */
 418         fc = header->frame_control;
 419         seq_ctl = le16_to_cpu(header->seq_ctrl);
 420
 421         /* metadata */
 422         channel = le16_to_cpu(rx_hdr->channel);
 423         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
 424         length = le16_to_cpu(rx_hdr->len);
 425
 426         /* end-of-frame status and timestamp */
 427         status = le32_to_cpu(rx_end->status);
 428         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
 429         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
 430         tsf = le64_to_cpu(rx_end->timestamp);
 431
 432         /* signal statistics */
 433         rssi = rx_stats->rssi;
 434         agc = rx_stats->agc;
 435         sig_avg = le16_to_cpu(rx_stats->sig_avg);
 436         noise_diff = le16_to_cpu(rx_stats->noise_diff);
 437
 438         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
 439
 440         /* if data frame is to us and all is good,
 441          *   (optionally) print summary for only 1 out of every 100 */
 442         if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
 443             cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
 444                 dataframe = 1;
 445                 if (!group100)
 446                         print_summary = 1;      /* print each frame */
 447                 else if (priv->framecnt_to_us < 100) {
 448                         priv->framecnt_to_us++;
 449                         print_summary = 0;
 450                 } else {
 451                         priv->framecnt_to_us = 0;
 452                         print_summary = 1;
 453                         hundred = 1;
 454                 }
 455         } else {
 456                 /* print summary for all other frames */
 457                 print_summary = 1;
 458         }
 459
 460         if (print_summary) {
 461                 char *title;
 462                 int rate;
 463
 464                 if (hundred)
 465                         title = "100Frames";
 466                 else if (ieee80211_has_retry(fc))
 467                         title = "Retry";
 468                 else if (ieee80211_is_assoc_resp(fc))
 469                         title = "AscRsp";
 470                 else if (ieee80211_is_reassoc_resp(fc))
 471                         title = "RasRsp";
 472                 else if (ieee80211_is_probe_resp(fc)) {
 473                         title = "PrbRsp";
 474                         print_dump = 1; /* dump frame contents */
 475                 } else if (ieee80211_is_beacon(fc)) {
 476                         title = "Beacon";
 477                         print_dump = 1; /* dump frame contents */
 478                 } else if (ieee80211_is_atim(fc))
 479                         title = "ATIM";
 480                 else if (ieee80211_is_auth(fc))
 481                         title = "Auth";
 482                 else if (ieee80211_is_deauth(fc))
 483                         title = "DeAuth";
 484                 else if (ieee80211_is_disassoc(fc))
 485                         title = "DisAssoc";
 486                 else
 487                         title = "Frame";
 488
 489                 rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 490                 if (rate == -1)
 491                         rate = 0;
 492                 else
 493                         rate = iwl3945_rates[rate].ieee / 2;
 494
 495                 /* print frame summary.
 496                  * MAC addresses show just the last byte (for brevity),
 497                  *    but you can hack it to show more, if you'd like to. */
 498                 if (dataframe)
 499                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
 500                                      "len=%u, rssi=%d, chnl=%d, rate=%d, \n",
 501                                      title, le16_to_cpu(fc), header->addr1[5],
 502                                      length, rssi, channel, rate);
 503                 else {
 504                         /* src/dst addresses assume managed mode */
 505                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
 506                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
 507                                      "phy=0x%02x, chnl=%d\n",
 508                                      title, le16_to_cpu(fc), header->addr1[5],
 509                                      header->addr3[5], rssi,
 510                                      tsf_low - priv->scan_start_tsf,
 511                                      phy_flags, channel);
 512                 }
 513         }
 514         if (print_dump)
 515                 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
 516 }
 517
 518 static void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 519                       struct iwl_rx_packet *pkt,
 520                       struct ieee80211_hdr *header, int group100)
 521 {
 522         if (priv->debug_level & IWL_DL_RX)
 523                 _iwl3945_dbg_report_frame(priv, pkt, header, group100);
 524 }
 525
 526 #else
 527 static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 528                       struct iwl_rx_packet *pkt,
 529                       struct ieee80211_hdr *header, int group100)
 530 {
 531 }
 532 #endif
 533
 534 /* This is necessary only for a number of statistics, see the caller. */
 535 static int iwl3945_is_network_packet(struct iwl_priv *priv,
 536                 struct ieee80211_hdr *header)
 537 {
 538         /* Filter incoming packets to determine if they are targeted toward
 539          * this network, discarding packets coming from ourselves */
 540         switch (priv->iw_mode) {
 541         case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source    | BSSID */
 542                 /* packets to our IBSS update information */
 543                 return !compare_ether_addr(header->addr3, priv->bssid);
 544         case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
 545                 /* packets to our IBSS update information */
 546                 return !compare_ether_addr(header->addr2, priv->bssid);
 547         default:
 548                 return 1;
 549         }
 550 }
 551
 552 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
 553                                    struct iwl_rx_mem_buffer *rxb,
 554                                    struct ieee80211_rx_status *stats)
 555 {
 556         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 557 #ifdef CONFIG_IWL3945_LEDS
 558         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 559 #endif
 560         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 561         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 562         short len = le16_to_cpu(rx_hdr->len);
 563
 564         /* We received data from the HW, so stop the watchdog */
 565         if (unlikely((len + IWL39_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) {
 566                 IWL_DEBUG_DROP("Corruption detected!\n");
 567                 return;
 568         }
 569
 570         /* We only process data packets if the interface is open */
 571         if (unlikely(!priv->is_open)) {
 572                 IWL_DEBUG_DROP_LIMIT
 573                     ("Dropping packet while interface is not open.\n");
 574                 return;
 575         }
 576
 577         skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt);
 578         /* Set the size of the skb to the size of the frame */
 579         skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
 580
 581         if (!iwl3945_mod_params.sw_crypto)
 582                 iwl3945_set_decrypted_flag(priv, rxb->skb,
 583                                        le32_to_cpu(rx_end->status), stats);
 584
 585 #ifdef CONFIG_IWL3945_LEDS
 586         if (ieee80211_is_data(hdr->frame_control))
 587                 priv->rxtxpackets += len;
 588 #endif
 589         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
 590         rxb->skb = NULL;
 591 }
 592
 593 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
 594
 595 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
 596                                 struct iwl_rx_mem_buffer *rxb)
 597 {
 598         struct ieee80211_hdr *header;
 599         struct ieee80211_rx_status rx_status;
 600         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 601         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 602         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 603         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 604         int snr;
 605         u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
 606         u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
 607         u8 network_packet;
 608
 609         rx_status.flag = 0;
 610         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
 611         rx_status.freq =
 612                 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
 613         rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
 614                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 615
 616         rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 617         if (rx_status.band == IEEE80211_BAND_5GHZ)
 618                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
 619
 620         rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
 621                                         RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
 622
 623         /* set the preamble flag if appropriate */
 624         if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
 625                 rx_status.flag |= RX_FLAG_SHORTPRE;
 626
 627         if ((unlikely(rx_stats->phy_count > 20))) {
 628                 IWL_DEBUG_DROP
 629                     ("dsp size out of range [0,20]: "
 630                      "%d/n", rx_stats->phy_count);
 631                 return;
 632         }
 633
 634         if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
 635             || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
 636                 IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
 637                 return;
 638         }
 639
 640
 641
 642         /* Convert 3945's rssi indicator to dBm */
 643         rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
 644
 645         /* Set default noise value to -127 */
 646         if (priv->last_rx_noise == 0)
 647                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
 648
 649         /* 3945 provides noise info for OFDM frames only.
 650          * sig_avg and noise_diff are measured by the 3945's digital signal
 651          *   processor (DSP), and indicate linear levels of signal level and
 652          *   distortion/noise within the packet preamble after
 653          *   automatic gain control (AGC).  sig_avg should stay fairly
 654          *   constant if the radio's AGC is working well.
 655          * Since these values are linear (not dB or dBm), linear
 656          *   signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
 657          * Convert linear SNR to dB SNR, then subtract that from rssi dBm
 658          *   to obtain noise level in dBm.
 659          * Calculate rx_status.signal (quality indicator in %) based on SNR. */
 660         if (rx_stats_noise_diff) {
 661                 snr = rx_stats_sig_avg / rx_stats_noise_diff;
 662                 rx_status.noise = rx_status.signal -
 663                                         iwl3945_calc_db_from_ratio(snr);
 664                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
 665                                                          rx_status.noise);
 666
 667         /* If noise info not available, calculate signal quality indicator (%)
 668          *   using just the dBm signal level. */
 669         } else {
 670                 rx_status.noise = priv->last_rx_noise;
 671                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
 672         }
 673
 674
 675         IWL_DEBUG_STATS("Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
 676                         rx_status.signal, rx_status.noise, rx_status.qual,
 677                         rx_stats_sig_avg, rx_stats_noise_diff);
 678
 679         header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 680
 681         network_packet = iwl3945_is_network_packet(priv, header);
 682
 683         IWL_DEBUG_STATS_LIMIT("[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
 684                               network_packet ? '*' : ' ',
 685                               le16_to_cpu(rx_hdr->channel),
 686                               rx_status.signal, rx_status.signal,
 687                               rx_status.noise, rx_status.rate_idx);
 688
 689         /* Set "1" to report good data frames in groups of 100 */
 690         iwl3945_dbg_report_frame(priv, pkt, header, 1);
 691
 692         if (network_packet) {
 693                 priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
 694                 priv->last_tsf = le64_to_cpu(rx_end->timestamp);
 695                 priv->last_rx_rssi = rx_status.signal;
 696                 priv->last_rx_noise = rx_status.noise;
 697         }
 698
 699         iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
 700 }
 701
 702 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 703                                      struct iwl_tx_queue *txq,
 704                                      dma_addr_t addr, u16 len, u8 reset, u8 pad)
 705 {
 706         int count;
 707         struct iwl_queue *q;
 708         struct iwl3945_tfd *tfd, *tfd_tmp;
 709
 710         q = &txq->q;
 711         tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 712         tfd = &tfd_tmp[q->write_ptr];
 713
 714         if (reset)
 715                 memset(tfd, 0, sizeof(*tfd));
 716
 717         count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 718
 719         if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
 720                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 721                           NUM_TFD_CHUNKS);
 722                 return -EINVAL;
 723         }
 724
 725         tfd->tbs[count].addr = cpu_to_le32(addr);
 726         tfd->tbs[count].len = cpu_to_le32(len);
 727
 728         count++;
 729
 730         tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
 731                                          TFD_CTL_PAD_SET(pad));
 732
 733         return 0;
 734 }
 735
 736 /**
 737  * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
 738  *
 739  * Does NOT advance any indexes
 740  */
 741 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 742 {
 743         struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 744         struct iwl3945_tfd *tfd = &tfd_tmp[txq->q.read_ptr];
 745         struct pci_dev *dev = priv->pci_dev;
 746         int i;
 747         int counter;
 748
 749         /* classify bd */
 750         if (txq->q.id == IWL_CMD_QUEUE_NUM)
 751                 /* nothing to cleanup after for host commands */
 752                 return;
 753
 754         /* sanity check */
 755         counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 756         if (counter > NUM_TFD_CHUNKS) {
 757                 IWL_ERR(priv, "Too many chunks: %i\n", counter);
 758                 /* @todo issue fatal error, it is quite serious situation */
 759                 return;
 760         }
 761
 762         /* unmap chunks if any */
 763
 764         for (i = 1; i < counter; i++) {
 765                 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
 766                          le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
 767                 if (txq->txb[txq->q.read_ptr].skb[0]) {
 768                         struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
 769                         if (txq->txb[txq->q.read_ptr].skb[0]) {
 770                                 /* Can be called from interrupt context */
 771                                 dev_kfree_skb_any(skb);
 772                                 txq->txb[txq->q.read_ptr].skb[0] = NULL;
 773                         }
 774                 }
 775         }
 776         return ;
 777 }
 778
 779 u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *addr)
 780 {
 781         int i, start = IWL_AP_ID;
 782         int ret = IWL_INVALID_STATION;
 783         unsigned long flags;
 784
 785         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
 786             (priv->iw_mode == NL80211_IFTYPE_AP))
 787                 start = IWL_STA_ID;
 788
 789         if (is_broadcast_ether_addr(addr))
 790                 return priv->hw_params.bcast_sta_id;
 791
 792         spin_lock_irqsave(&priv->sta_lock, flags);
 793         for (i = start; i < priv->hw_params.max_stations; i++)
 794                 if ((priv->stations_39[i].used) &&
 795                     (!compare_ether_addr
 796                      (priv->stations_39[i].sta.sta.addr, addr))) {
 797                         ret = i;
 798                         goto out;
 799                 }
 800
 801         IWL_DEBUG_INFO("can not find STA %pM (total %d)\n",
 802                        addr, priv->num_stations);
 803  out:
 804         spin_unlock_irqrestore(&priv->sta_lock, flags);
 805         return ret;
 806 }
 807
 808 /**
 809  * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
 810  *
 811 */
 812 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd,
 813                               struct ieee80211_tx_info *info,
 814                               struct ieee80211_hdr *hdr, int sta_id, int tx_id)
 815 {
 816         u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
 817         u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
 818         u16 rate_mask;
 819         int rate;
 820         u8 rts_retry_limit;
 821         u8 data_retry_limit;
 822         __le32 tx_flags;
 823         __le16 fc = hdr->frame_control;
 824         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 825
 826         rate = iwl3945_rates[rate_index].plcp;
 827         tx_flags = tx->tx_flags;
 828
 829         /* We need to figure out how to get the sta->supp_rates while
 830          * in this running context */
 831         rate_mask = IWL_RATES_MASK;
 832
 833         if (tx_id >= IWL_CMD_QUEUE_NUM)
 834                 rts_retry_limit = 3;
 835         else
 836                 rts_retry_limit = 7;
 837
 838         if (ieee80211_is_probe_resp(fc)) {
 839                 data_retry_limit = 3;
 840                 if (data_retry_limit < rts_retry_limit)
 841                         rts_retry_limit = data_retry_limit;
 842         } else
 843                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
 844
 845         if (priv->data_retry_limit != -1)
 846                 data_retry_limit = priv->data_retry_limit;
 847
 848         if (ieee80211_is_mgmt(fc)) {
 849                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
 850                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
 851                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
 852                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
 853                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
 854                         if (tx_flags & TX_CMD_FLG_RTS_MSK) {
 855                                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 856                                 tx_flags |= TX_CMD_FLG_CTS_MSK;
 857                         }
 858                         break;
 859                 default:
 860                         break;
 861                 }
 862         }
 863
 864         tx->rts_retry_limit = rts_retry_limit;
 865         tx->data_retry_limit = data_retry_limit;
 866         tx->rate = rate;
 867         tx->tx_flags = tx_flags;
 868
 869         /* OFDM */
 870         tx->supp_rates[0] =
 871            ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
 872
 873         /* CCK */
 874         tx->supp_rates[1] = (rate_mask & 0xF);
 875
 876         IWL_DEBUG_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
 877                        "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
 878                        tx->rate, le32_to_cpu(tx->tx_flags),
 879                        tx->supp_rates[1], tx->supp_rates[0]);
 880 }
 881
 882 u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
 883 {
 884         unsigned long flags_spin;
 885         struct iwl3945_station_entry *station;
 886
 887         if (sta_id == IWL_INVALID_STATION)
 888                 return IWL_INVALID_STATION;
 889
 890         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 891         station = &priv->stations_39[sta_id];
 892
 893         station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
 894         station->sta.rate_n_flags = cpu_to_le16(tx_rate);
 895         station->sta.mode = STA_CONTROL_MODIFY_MSK;
 896
 897         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 898
 899         iwl_send_add_sta(priv,
 900                          (struct iwl_addsta_cmd *)&station->sta, flags);
 901         IWL_DEBUG_RATE("SCALE sync station %d to rate %d\n",
 902                         sta_id, tx_rate);
 903         return sta_id;
 904 }
 905
 906 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 907 {
 908         int rc;
 909         unsigned long flags;
 910
 911         spin_lock_irqsave(&priv->lock, flags);
 912         rc = iwl_grab_nic_access(priv);
 913         if (rc) {
 914                 spin_unlock_irqrestore(&priv->lock, flags);
 915                 return rc;
 916         }
 917
 918         if (src == IWL_PWR_SRC_VAUX) {
 919                 u32 val;
 920
 921                 rc = pci_read_config_dword(priv->pci_dev,
 922                                 PCI_POWER_SOURCE, &val);
 923                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) {
 924                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 925                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 926                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
 927                         iwl_release_nic_access(priv);
 928
 929                         iwl_poll_bit(priv, CSR_GPIO_IN,
 930                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
 931                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
 932                 } else
 933                         iwl_release_nic_access(priv);
 934         } else {
 935                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 936                                 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 937                                 ~APMG_PS_CTRL_MSK_PWR_SRC);
 938
 939                 iwl_release_nic_access(priv);
 940                 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
 941                              CSR_GPIO_IN_BIT_AUX_POWER, 5000);  /* uS */
 942         }
 943         spin_unlock_irqrestore(&priv->lock, flags);
 944
 945         return rc;
 946 }
 947
 948 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 949 {
 950         int rc;
 951         unsigned long flags;
 952
 953         spin_lock_irqsave(&priv->lock, flags);
 954         rc = iwl_grab_nic_access(priv);
 955         if (rc) {
 956                 spin_unlock_irqrestore(&priv->lock, flags);
 957                 return rc;
 958         }
 959
 960         iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr);
 961         iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
 962         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
 963         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
 964                 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
 965                 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
 966                 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
 967                 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
 968                 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
 969                 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
 970                 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
 971                 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
 972
 973         /* fake read to flush all prev I/O */
 974         iwl_read_direct32(priv, FH39_RSSR_CTRL);
 975
 976         iwl_release_nic_access(priv);
 977         spin_unlock_irqrestore(&priv->lock, flags);
 978
 979         return 0;
 980 }
 981
 982 static int iwl3945_tx_reset(struct iwl_priv *priv)
 983 {
 984         int rc;
 985         unsigned long flags;
 986
 987         spin_lock_irqsave(&priv->lock, flags);
 988         rc = iwl_grab_nic_access(priv);
 989         if (rc) {
 990                 spin_unlock_irqrestore(&priv->lock, flags);
 991                 return rc;
 992         }
 993
 994         /* bypass mode */
 995         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
 996
 997         /* RA 0 is active */
 998         iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
 999
1000         /* all 6 fifo are active */
1001         iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
1002
1003         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
1004         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
1005         iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
1006         iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
1007
1008         iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
1009                              priv->shared_phys);
1010
1011         iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
1012                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
1013                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
1014                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
1015                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
1016                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
1017                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
1018                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
1019
1020         iwl_release_nic_access(priv);
1021         spin_unlock_irqrestore(&priv->lock, flags);
1022
1023         return 0;
1024 }
1025
1026 /**
1027  * iwl3945_txq_ctx_reset - Reset TX queue context
1028  *
1029  * Destroys all DMA structures and initialize them again
1030  */
1031 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
1032 {
1033         int rc;
1034         int txq_id, slots_num;
1035
1036         iwl3945_hw_txq_ctx_free(priv);
1037
1038         /* Tx CMD queue */
1039         rc = iwl3945_tx_reset(priv);
1040         if (rc)
1041                 goto error;
1042
1043         /* Tx queue(s) */
1044         for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) {
1045                 slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
1046                                 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
1047                 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
1048                                        txq_id);
1049                 if (rc) {
1050                         IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
1051                         goto error;
1052                 }
1053         }
1054
1055         return rc;
1056
1057  error:
1058         iwl3945_hw_txq_ctx_free(priv);
1059         return rc;
1060 }
1061
1062 static int iwl3945_apm_init(struct iwl_priv *priv)
1063 {
1064         int ret = 0;
1065
1066         iwl3945_power_init_handle(priv);
1067
1068         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1069                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1070
1071         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
1072         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1073                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1074
1075         /* set "initialization complete" bit to move adapter
1076         * D0U* --> D0A* state */
1077         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1078
1079         iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1080                             CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1081         if (ret < 0) {
1082                 IWL_DEBUG_INFO("Failed to init the card\n");
1083                 goto out;
1084         }
1085
1086         ret = iwl_grab_nic_access(priv);
1087         if (ret)
1088                 goto out;
1089
1090         /* enable DMA */
1091         iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
1092                                                 APMG_CLK_VAL_BSM_CLK_RQT);
1093
1094         udelay(20);
1095
1096         /* disable L1-Active */
1097         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1098                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1099
1100         iwl_release_nic_access(priv);
1101 out:
1102         return ret;
1103 }
1104
1105 static void iwl3945_nic_config(struct iwl_priv *priv)
1106 {
1107         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1108         unsigned long flags;
1109         u8 rev_id = 0;
1110
1111         spin_lock_irqsave(&priv->lock, flags);
1112
1113         if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
1114                 IWL_DEBUG_INFO("RTP type \n");
1115         else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
1116                 IWL_DEBUG_INFO("3945 RADIO-MB type\n");
1117                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1118                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
1119         } else {
1120                 IWL_DEBUG_INFO("3945 RADIO-MM type\n");
1121                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1122                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
1123         }
1124
1125         if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
1126                 IWL_DEBUG_INFO("SKU OP mode is mrc\n");
1127                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1128                             CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
1129         } else
1130                 IWL_DEBUG_INFO("SKU OP mode is basic\n");
1131
1132         if ((eeprom->board_revision & 0xF0) == 0xD0) {
1133                 IWL_DEBUG_INFO("3945ABG revision is 0x%X\n",
1134                                eeprom->board_revision);
1135                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1136                             CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1137         } else {
1138                 IWL_DEBUG_INFO("3945ABG revision is 0x%X\n",
1139                                eeprom->board_revision);
1140                 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1141                               CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1142         }
1143
1144         if (eeprom->almgor_m_version <= 1) {
1145                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1146                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1147                 IWL_DEBUG_INFO("Card M type A version is 0x%X\n",
1148                                eeprom->almgor_m_version);
1149         } else {
1150                 IWL_DEBUG_INFO("Card M type B version is 0x%X\n",
1151                                eeprom->almgor_m_version);
1152                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1153                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1154         }
1155         spin_unlock_irqrestore(&priv->lock, flags);
1156
1157         if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1158                 IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
1159
1160         if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1161                 IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
1162 }
1163
1164 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1165 {
1166         u8 rev_id;
1167         int rc;
1168         unsigned long flags;
1169         struct iwl_rx_queue *rxq = &priv->rxq;
1170
1171         spin_lock_irqsave(&priv->lock, flags);
1172         priv->cfg->ops->lib->apm_ops.init(priv);
1173         spin_unlock_irqrestore(&priv->lock, flags);
1174
1175         /* Determine HW type */
1176         rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
1177         if (rc)
1178                 return rc;
1179         IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id);
1180
1181         rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
1182         if(rc)
1183                 return rc;
1184
1185         priv->cfg->ops->lib->apm_ops.config(priv);
1186
1187         /* Allocate the RX queue, or reset if it is already allocated */
1188         if (!rxq->bd) {
1189                 rc = iwl_rx_queue_alloc(priv);
1190                 if (rc) {
1191                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
1192                         return -ENOMEM;
1193                 }
1194         } else
1195                 iwl_rx_queue_reset(priv, rxq);
1196
1197         iwl3945_rx_replenish(priv);
1198
1199         iwl3945_rx_init(priv, rxq);
1200
1201         spin_lock_irqsave(&priv->lock, flags);
1202
1203         /* Look at using this instead:
1204         rxq->need_update = 1;
1205         iwl_rx_queue_update_write_ptr(priv, rxq);
1206         */
1207
1208         rc = iwl_grab_nic_access(priv);
1209         if (rc) {
1210                 spin_unlock_irqrestore(&priv->lock, flags);
1211                 return rc;
1212         }
1213         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1214         iwl_release_nic_access(priv);
1215
1216         spin_unlock_irqrestore(&priv->lock, flags);
1217
1218         rc = iwl3945_txq_ctx_reset(priv);
1219         if (rc)
1220                 return rc;
1221
1222         set_bit(STATUS_INIT, &priv->status);
1223
1224         return 0;
1225 }
1226
1227 /**
1228  * iwl3945_hw_txq_ctx_free - Free TXQ Context
1229  *
1230  * Destroy all TX DMA queues and structures
1231  */
1232 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1233 {
1234         int txq_id;
1235
1236         /* Tx queues */
1237         for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++)
1238                 iwl_tx_queue_free(priv, txq_id);
1239 }
1240
1241 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1242 {
1243         int txq_id;
1244         unsigned long flags;
1245
1246         spin_lock_irqsave(&priv->lock, flags);
1247         if (iwl_grab_nic_access(priv)) {
1248                 spin_unlock_irqrestore(&priv->lock, flags);
1249                 iwl3945_hw_txq_ctx_free(priv);
1250                 return;
1251         }
1252
1253         /* stop SCD */
1254         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1255
1256         /* reset TFD queues */
1257         for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) {
1258                 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1259                 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1260                                 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1261                                 1000);
1262         }
1263
1264         iwl_release_nic_access(priv);
1265         spin_unlock_irqrestore(&priv->lock, flags);
1266
1267         iwl3945_hw_txq_ctx_free(priv);
1268 }
1269
1270 static int iwl3945_apm_stop_master(struct iwl_priv *priv)
1271 {
1272         int ret = 0;
1273         unsigned long flags;
1274
1275         spin_lock_irqsave(&priv->lock, flags);
1276
1277         /* set stop master bit */
1278         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1279
1280         iwl_poll_direct_bit(priv, CSR_RESET,
1281                             CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1282
1283         if (ret < 0)
1284                 goto out;
1285
1286 out:
1287         spin_unlock_irqrestore(&priv->lock, flags);
1288         IWL_DEBUG_INFO("stop master\n");
1289
1290         return ret;
1291 }
1292
1293 static void iwl3945_apm_stop(struct iwl_priv *priv)
1294 {
1295         unsigned long flags;
1296
1297         iwl3945_apm_stop_master(priv);
1298
1299         spin_lock_irqsave(&priv->lock, flags);
1300
1301         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1302
1303         udelay(10);
1304         /* clear "init complete"  move adapter D0A* --> D0U state */
1305         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1306         spin_unlock_irqrestore(&priv->lock, flags);
1307 }
1308
1309 static int iwl3945_apm_reset(struct iwl_priv *priv)
1310 {
1311         int rc;
1312         unsigned long flags;
1313
1314         iwl3945_apm_stop_master(priv);
1315
1316         spin_lock_irqsave(&priv->lock, flags);
1317
1318         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1319         udelay(10);
1320
1321         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1322
1323         iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1324                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1325
1326         rc = iwl_grab_nic_access(priv);
1327         if (!rc) {
1328                 iwl_write_prph(priv, APMG_CLK_CTRL_REG,
1329                                          APMG_CLK_VAL_BSM_CLK_RQT);
1330
1331                 iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
1332                 iwl_write_prph(priv, APMG_RTC_INT_STT_REG,
1333                                         0xFFFFFFFF);
1334
1335                 /* enable DMA */
1336                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1337                                          APMG_CLK_VAL_DMA_CLK_RQT |
1338                                          APMG_CLK_VAL_BSM_CLK_RQT);
1339                 udelay(10);
1340
1341                 iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
1342                                 APMG_PS_CTRL_VAL_RESET_REQ);
1343                 udelay(5);
1344                 iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
1345                                 APMG_PS_CTRL_VAL_RESET_REQ);
1346                 iwl_release_nic_access(priv);
1347         }
1348
1349         /* Clear the 'host command active' bit... */
1350         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1351
1352         wake_up_interruptible(&priv->wait_command_queue);
1353         spin_unlock_irqrestore(&priv->lock, flags);
1354
1355         return rc;
1356 }
1357
1358 /**
1359  * iwl3945_hw_reg_adjust_power_by_temp
1360  * return index delta into power gain settings table
1361 */
1362 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1363 {
1364         return (new_reading - old_reading) * (-11) / 100;
1365 }
1366
1367 /**
1368  * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1369  */
1370 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1371 {
1372         return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1373 }
1374
1375 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1376 {
1377         return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1378 }
1379
1380 /**
1381  * iwl3945_hw_reg_txpower_get_temperature
1382  * get the current temperature by reading from NIC
1383 */
1384 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1385 {
1386         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1387         int temperature;
1388
1389         temperature = iwl3945_hw_get_temperature(priv);
1390
1391         /* driver's okay range is -260 to +25.
1392          *   human readable okay range is 0 to +285 */
1393         IWL_DEBUG_INFO("Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1394
1395         /* handle insane temp reading */
1396         if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1397                 IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
1398
1399                 /* if really really hot(?),
1400                  *   substitute the 3rd band/group's temp measured at factory */
1401                 if (priv->last_temperature > 100)
1402                         temperature = eeprom->groups[2].temperature;
1403                 else /* else use most recent "sane" value from driver */
1404                         temperature = priv->last_temperature;
1405         }
1406
1407         return temperature;     /* raw, not "human readable" */
1408 }
1409
1410 /* Adjust Txpower only if temperature variance is greater than threshold.
1411  *
1412  * Both are lower than older versions' 9 degrees */
1413 #define IWL_TEMPERATURE_LIMIT_TIMER   6
1414
1415 /**
1416  * is_temp_calib_needed - determines if new calibration is needed
1417  *
1418  * records new temperature in tx_mgr->temperature.
1419  * replaces tx_mgr->last_temperature *only* if calib needed
1420  *    (assumes caller will actually do the calibration!). */
1421 static int is_temp_calib_needed(struct iwl_priv *priv)
1422 {
1423         int temp_diff;
1424
1425         priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1426         temp_diff = priv->temperature - priv->last_temperature;
1427
1428         /* get absolute value */
1429         if (temp_diff < 0) {
1430                 IWL_DEBUG_POWER("Getting cooler, delta %d,\n", temp_diff);
1431                 temp_diff = -temp_diff;
1432         } else if (temp_diff == 0)
1433                 IWL_DEBUG_POWER("Same temp,\n");
1434         else
1435                 IWL_DEBUG_POWER("Getting warmer, delta %d,\n", temp_diff);
1436
1437         /* if we don't need calibration, *don't* update last_temperature */
1438         if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1439                 IWL_DEBUG_POWER("Timed thermal calib not needed\n");
1440                 return 0;
1441         }
1442
1443         IWL_DEBUG_POWER("Timed thermal calib needed\n");
1444
1445         /* assume that caller will actually do calib ...
1446          *   update the "last temperature" value */
1447         priv->last_temperature = priv->temperature;
1448         return 1;
1449 }
1450
1451 #define IWL_MAX_GAIN_ENTRIES 78
1452 #define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
1453 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1454
1455 /* radio and DSP power table, each step is 1/2 dB.
1456  * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1457 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1458         {
1459          {251, 127},            /* 2.4 GHz, highest power */
1460          {251, 127},
1461          {251, 127},
1462          {251, 127},
1463          {251, 125},
1464          {251, 110},
1465          {251, 105},
1466          {251, 98},
1467          {187, 125},
1468          {187, 115},
1469          {187, 108},
1470          {187, 99},
1471          {243, 119},
1472          {243, 111},
1473          {243, 105},
1474          {243, 97},
1475          {243, 92},
1476          {211, 106},
1477          {211, 100},
1478          {179, 120},
1479          {179, 113},
1480          {179, 107},
1481          {147, 125},
1482          {147, 119},
1483          {147, 112},
1484          {147, 106},
1485          {147, 101},
1486          {147, 97},
1487          {147, 91},
1488          {115, 107},
1489          {235, 121},
1490          {235, 115},
1491          {235, 109},
1492          {203, 127},
1493          {203, 121},
1494          {203, 115},
1495          {203, 108},
1496          {203, 102},
1497          {203, 96},
1498          {203, 92},
1499          {171, 110},
1500          {171, 104},
1501          {171, 98},
1502          {139, 116},
1503          {227, 125},
1504          {227, 119},
1505          {227, 113},
1506          {227, 107},
1507          {227, 101},
1508          {227, 96},
1509          {195, 113},
1510          {195, 106},
1511          {195, 102},
1512          {195, 95},
1513          {163, 113},
1514          {163, 106},
1515          {163, 102},
1516          {163, 95},
1517          {131, 113},
1518          {131, 106},
1519          {131, 102},
1520          {131, 95},
1521          {99, 113},
1522          {99, 106},
1523          {99, 102},
1524          {99, 95},
1525          {67, 113},
1526          {67, 106},
1527          {67, 102},
1528          {67, 95},
1529          {35, 113},
1530          {35, 106},
1531          {35, 102},
1532          {35, 95},
1533          {3, 113},
1534          {3, 106},
1535          {3, 102},
1536          {3, 95} },             /* 2.4 GHz, lowest power */
1537         {
1538          {251, 127},            /* 5.x GHz, highest power */
1539          {251, 120},
1540          {251, 114},
1541          {219, 119},
1542          {219, 101},
1543          {187, 113},
1544          {187, 102},
1545          {155, 114},
1546          {155, 103},
1547          {123, 117},
1548          {123, 107},
1549          {123, 99},
1550          {123, 92},
1551          {91, 108},
1552          {59, 125},
1553          {59, 118},
1554          {59, 109},
1555          {59, 102},
1556          {59, 96},
1557          {59, 90},
1558          {27, 104},
1559          {27, 98},
1560          {27, 92},
1561          {115, 118},
1562          {115, 111},
1563          {115, 104},
1564          {83, 126},
1565          {83, 121},
1566          {83, 113},
1567          {83, 105},
1568          {83, 99},
1569          {51, 118},
1570          {51, 111},
1571          {51, 104},
1572          {51, 98},
1573          {19, 116},
1574          {19, 109},
1575          {19, 102},
1576          {19, 98},
1577          {19, 93},
1578          {171, 113},
1579          {171, 107},
1580          {171, 99},
1581          {139, 120},
1582          {139, 113},
1583          {139, 107},
1584          {139, 99},
1585          {107, 120},
1586          {107, 113},
1587          {107, 107},
1588          {107, 99},
1589          {75, 120},
1590          {75, 113},
1591          {75, 107},
1592          {75, 99},
1593          {43, 120},
1594          {43, 113},
1595          {43, 107},
1596          {43, 99},
1597          {11, 120},
1598          {11, 113},
1599          {11, 107},
1600          {11, 99},
1601          {131, 107},
1602          {131, 99},
1603          {99, 120},
1604          {99, 113},
1605          {99, 107},
1606          {99, 99},
1607          {67, 120},
1608          {67, 113},
1609          {67, 107},
1610          {67, 99},
1611          {35, 120},
1612          {35, 113},
1613          {35, 107},
1614          {35, 99},
1615          {3, 120} }             /* 5.x GHz, lowest power */
1616 };
1617
1618 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1619 {
1620         if (index < 0)
1621                 return 0;
1622         if (index >= IWL_MAX_GAIN_ENTRIES)
1623                 return IWL_MAX_GAIN_ENTRIES - 1;
1624         return (u8) index;
1625 }
1626
1627 /* Kick off thermal recalibration check every 60 seconds */
1628 #define REG_RECALIB_PERIOD (60)
1629
1630 /**
1631  * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1632  *
1633  * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1634  * or 6 Mbit (OFDM) rates.
1635  */
1636 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1637                                s32 rate_index, const s8 *clip_pwrs,
1638                                struct iwl_channel_info *ch_info,
1639                                int band_index)
1640 {
1641         struct iwl3945_scan_power_info *scan_power_info;
1642         s8 power;
1643         u8 power_index;
1644
1645         scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1646
1647         /* use this channel group's 6Mbit clipping/saturation pwr,
1648          *   but cap at regulatory scan power restriction (set during init
1649          *   based on eeprom channel data) for this channel.  */
1650         power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1651
1652         /* further limit to user's max power preference.
1653          * FIXME:  Other spectrum management power limitations do not
1654          *   seem to apply?? */
1655         power = min(power, priv->tx_power_user_lmt);
1656         scan_power_info->requested_power = power;
1657
1658         /* find difference between new scan *power* and current "normal"
1659          *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
1660          *   current "normal" temperature-compensated Tx power *index* for
1661          *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1662          *   *index*. */
1663         power_index = ch_info->power_info[rate_index].power_table_index
1664             - (power - ch_info->power_info
1665                [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1666
1667         /* store reference index that we use when adjusting *all* scan
1668          *   powers.  So we can accommodate user (all channel) or spectrum
1669          *   management (single channel) power changes "between" temperature
1670          *   feedback compensation procedures.
1671          * don't force fit this reference index into gain table; it may be a
1672          *   negative number.  This will help avoid errors when we're at
1673          *   the lower bounds (highest gains, for warmest temperatures)
1674          *   of the table. */
1675
1676         /* don't exceed table bounds for "real" setting */
1677         power_index = iwl3945_hw_reg_fix_power_index(power_index);
1678
1679         scan_power_info->power_table_index = power_index;
1680         scan_power_info->tpc.tx_gain =
1681             power_gain_table[band_index][power_index].tx_gain;
1682         scan_power_info->tpc.dsp_atten =
1683             power_gain_table[band_index][power_index].dsp_atten;
1684 }
1685
1686 /**
1687  * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1688  *
1689  * Configures power settings for all rates for the current channel,
1690  * using values from channel info struct, and send to NIC
1691  */
1692 int iwl3945_send_tx_power(struct iwl_priv *priv)
1693 {
1694         int rate_idx, i;
1695         const struct iwl_channel_info *ch_info = NULL;
1696         struct iwl3945_txpowertable_cmd txpower = {
1697                 .channel = priv->active39_rxon.channel,
1698         };
1699
1700         txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1701         ch_info = iwl_get_channel_info(priv,
1702                                        priv->band,
1703                                        le16_to_cpu(priv->active39_rxon.channel));
1704         if (!ch_info) {
1705                 IWL_ERR(priv,
1706                         "Failed to get channel info for channel %d [%d]\n",
1707                         le16_to_cpu(priv->active39_rxon.channel), priv->band);
1708                 return -EINVAL;
1709         }
1710
1711         if (!is_channel_valid(ch_info)) {
1712                 IWL_DEBUG_POWER("Not calling TX_PWR_TABLE_CMD on "
1713                                 "non-Tx channel.\n");
1714                 return 0;
1715         }
1716
1717         /* fill cmd with power settings for all rates for current channel */
1718         /* Fill OFDM rate */
1719         for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1720              rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1721
1722                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1723                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1724
1725                 IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1726                                 le16_to_cpu(txpower.channel),
1727                                 txpower.band,
1728                                 txpower.power[i].tpc.tx_gain,
1729                                 txpower.power[i].tpc.dsp_atten,
1730                                 txpower.power[i].rate);
1731         }
1732         /* Fill CCK rates */
1733         for (rate_idx = IWL_FIRST_CCK_RATE;
1734              rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1735                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1736                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1737
1738                 IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1739                                 le16_to_cpu(txpower.channel),
1740                                 txpower.band,
1741                                 txpower.power[i].tpc.tx_gain,
1742                                 txpower.power[i].tpc.dsp_atten,
1743                                 txpower.power[i].rate);
1744         }
1745
1746         return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1747                                 sizeof(struct iwl3945_txpowertable_cmd),
1748                                 &txpower);
1749
1750 }
1751
1752 /**
1753  * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1754  * @ch_info: Channel to update.  Uses power_info.requested_power.
1755  *
1756  * Replace requested_power and base_power_index ch_info fields for
1757  * one channel.
1758  *
1759  * Called if user or spectrum management changes power preferences.
1760  * Takes into account h/w and modulation limitations (clip power).
1761  *
1762  * This does *not* send anything to NIC, just sets up ch_info for one channel.
1763  *
1764  * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1765  *       properly fill out the scan powers, and actual h/w gain settings,
1766  *       and send changes to NIC
1767  */
1768 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1769                              struct iwl_channel_info *ch_info)
1770 {
1771         struct iwl3945_channel_power_info *power_info;
1772         int power_changed = 0;
1773         int i;
1774         const s8 *clip_pwrs;
1775         int power;
1776
1777         /* Get this chnlgrp's rate-to-max/clip-powers table */
1778         clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1779
1780         /* Get this channel's rate-to-current-power settings table */
1781         power_info = ch_info->power_info;
1782
1783         /* update OFDM Txpower settings */
1784         for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1785              i++, ++power_info) {
1786                 int delta_idx;
1787
1788                 /* limit new power to be no more than h/w capability */
1789                 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1790                 if (power == power_info->requested_power)
1791                         continue;
1792
1793                 /* find difference between old and new requested powers,
1794                  *    update base (non-temp-compensated) power index */
1795                 delta_idx = (power - power_info->requested_power) * 2;
1796                 power_info->base_power_index -= delta_idx;
1797
1798                 /* save new requested power value */
1799                 power_info->requested_power = power;
1800
1801                 power_changed = 1;
1802         }
1803
1804         /* update CCK Txpower settings, based on OFDM 12M setting ...
1805          *    ... all CCK power settings for a given channel are the *same*. */
1806         if (power_changed) {
1807                 power =
1808                     ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1809                     requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1810
1811                 /* do all CCK rates' iwl3945_channel_power_info structures */
1812                 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1813                         power_info->requested_power = power;
1814                         power_info->base_power_index =
1815                             ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1816                             base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1817                         ++power_info;
1818                 }
1819         }
1820
1821         return 0;
1822 }
1823
1824 /**
1825  * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1826  *
1827  * NOTE: Returned power limit may be less (but not more) than requested,
1828  *       based strictly on regulatory (eeprom and spectrum mgt) limitations
1829  *       (no consideration for h/w clipping limitations).
1830  */
1831 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1832 {
1833         s8 max_power;
1834
1835 #if 0
1836         /* if we're using TGd limits, use lower of TGd or EEPROM */
1837         if (ch_info->tgd_data.max_power != 0)
1838                 max_power = min(ch_info->tgd_data.max_power,
1839                                 ch_info->eeprom.max_power_avg);
1840
1841         /* else just use EEPROM limits */
1842         else
1843 #endif
1844                 max_power = ch_info->eeprom.max_power_avg;
1845
1846         return min(max_power, ch_info->max_power_avg);
1847 }
1848
1849 /**
1850  * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1851  *
1852  * Compensate txpower settings of *all* channels for temperature.
1853  * This only accounts for the difference between current temperature
1854  *   and the factory calibration temperatures, and bases the new settings
1855  *   on the channel's base_power_index.
1856  *
1857  * If RxOn is "associated", this sends the new Txpower to NIC!
1858  */
1859 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1860 {
1861         struct iwl_channel_info *ch_info = NULL;
1862         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1863         int delta_index;
1864         const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1865         u8 a_band;
1866         u8 rate_index;
1867         u8 scan_tbl_index;
1868         u8 i;
1869         int ref_temp;
1870         int temperature = priv->temperature;
1871
1872         /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1873         for (i = 0; i < priv->channel_count; i++) {
1874                 ch_info = &priv->channel_info[i];
1875                 a_band = is_channel_a_band(ch_info);
1876
1877                 /* Get this chnlgrp's factory calibration temperature */
1878                 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1879                     temperature;
1880
1881                 /* get power index adjustment based on current and factory
1882                  * temps */
1883                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1884                                                               ref_temp);
1885
1886                 /* set tx power value for all rates, OFDM and CCK */
1887                 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1888                      rate_index++) {
1889                         int power_idx =
1890                             ch_info->power_info[rate_index].base_power_index;
1891
1892                         /* temperature compensate */
1893                         power_idx += delta_index;
1894
1895                         /* stay within table range */
1896                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1897                         ch_info->power_info[rate_index].
1898                             power_table_index = (u8) power_idx;
1899                         ch_info->power_info[rate_index].tpc =
1900                             power_gain_table[a_band][power_idx];
1901                 }
1902
1903                 /* Get this chnlgrp's rate-to-max/clip-powers table */
1904                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1905
1906                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1907                 for (scan_tbl_index = 0;
1908                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1909                         s32 actual_index = (scan_tbl_index == 0) ?
1910                             IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1911                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1912                                            actual_index, clip_pwrs,
1913                                            ch_info, a_band);
1914                 }
1915         }
1916
1917         /* send Txpower command for current channel to ucode */
1918         return priv->cfg->ops->lib->send_tx_power(priv);
1919 }
1920
1921 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1922 {
1923         struct iwl_channel_info *ch_info;
1924         s8 max_power;
1925         u8 a_band;
1926         u8 i;
1927
1928         if (priv->tx_power_user_lmt == power) {
1929                 IWL_DEBUG_POWER("Requested Tx power same as current "
1930                                 "limit: %ddBm.\n", power);
1931                 return 0;
1932         }
1933
1934         IWL_DEBUG_POWER("Setting upper limit clamp to %ddBm.\n", power);
1935         priv->tx_power_user_lmt = power;
1936
1937         /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1938
1939         for (i = 0; i < priv->channel_count; i++) {
1940                 ch_info = &priv->channel_info[i];
1941                 a_band = is_channel_a_band(ch_info);
1942
1943                 /* find minimum power of all user and regulatory constraints
1944                  *    (does not consider h/w clipping limitations) */
1945                 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1946                 max_power = min(power, max_power);
1947                 if (max_power != ch_info->curr_txpow) {
1948                         ch_info->curr_txpow = max_power;
1949
1950                         /* this considers the h/w clipping limitations */
1951                         iwl3945_hw_reg_set_new_power(priv, ch_info);
1952                 }
1953         }
1954
1955         /* update txpower settings for all channels,
1956          *   send to NIC if associated. */
1957         is_temp_calib_needed(priv);
1958         iwl3945_hw_reg_comp_txpower_temp(priv);
1959
1960         return 0;
1961 }
1962
1963 /* will add 3945 channel switch cmd handling later */
1964 int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel)
1965 {
1966         return 0;
1967 }
1968
1969 /**
1970  * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
1971  *
1972  * -- reset periodic timer
1973  * -- see if temp has changed enough to warrant re-calibration ... if so:
1974  *     -- correct coeffs for temp (can reset temp timer)
1975  *     -- save this temp as "last",
1976  *     -- send new set of gain settings to NIC
1977  * NOTE:  This should continue working, even when we're not associated,
1978  *   so we can keep our internal table of scan powers current. */
1979 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
1980 {
1981         /* This will kick in the "brute force"
1982          * iwl3945_hw_reg_comp_txpower_temp() below */
1983         if (!is_temp_calib_needed(priv))
1984                 goto reschedule;
1985
1986         /* Set up a new set of temp-adjusted TxPowers, send to NIC.
1987          * This is based *only* on current temperature,
1988          * ignoring any previous power measurements */
1989         iwl3945_hw_reg_comp_txpower_temp(priv);
1990
1991  reschedule:
1992         queue_delayed_work(priv->workqueue,
1993                            &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
1994 }
1995
1996 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
1997 {
1998         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1999                                              thermal_periodic.work);
2000
2001         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2002                 return;
2003
2004         mutex_lock(&priv->mutex);
2005         iwl3945_reg_txpower_periodic(priv);
2006         mutex_unlock(&priv->mutex);
2007 }
2008
2009 /**
2010  * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2011  *                                 for the channel.
2012  *
2013  * This function is used when initializing channel-info structs.
2014  *
2015  * NOTE: These channel groups do *NOT* match the bands above!
2016  *       These channel groups are based on factory-tested channels;
2017  *       on A-band, EEPROM's "group frequency" entries represent the top
2018  *       channel in each group 1-4.  Group 5 All B/G channels are in group 0.
2019  */
2020 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
2021                                        const struct iwl_channel_info *ch_info)
2022 {
2023         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2024         struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
2025         u8 group;
2026         u16 group_index = 0;    /* based on factory calib frequencies */
2027         u8 grp_channel;
2028
2029         /* Find the group index for the channel ... don't use index 1(?) */
2030         if (is_channel_a_band(ch_info)) {
2031                 for (group = 1; group < 5; group++) {
2032                         grp_channel = ch_grp[group].group_channel;
2033                         if (ch_info->channel <= grp_channel) {
2034                                 group_index = group;
2035                                 break;
2036                         }
2037                 }
2038                 /* group 4 has a few channels *above* its factory cal freq */
2039                 if (group == 5)
2040                         group_index = 4;
2041         } else
2042                 group_index = 0;        /* 2.4 GHz, group 0 */
2043
2044         IWL_DEBUG_POWER("Chnl %d mapped to grp %d\n", ch_info->channel,
2045                         group_index);
2046         return group_index;
2047 }
2048
2049 /**
2050  * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2051  *
2052  * Interpolate to get nominal (i.e. at factory calibration temperature) index
2053  *   into radio/DSP gain settings table for requested power.
2054  */
2055 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
2056                                        s8 requested_power,
2057                                        s32 setting_index, s32 *new_index)
2058 {
2059         const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2060         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2061         s32 index0, index1;
2062         s32 power = 2 * requested_power;
2063         s32 i;
2064         const struct iwl3945_eeprom_txpower_sample *samples;
2065         s32 gains0, gains1;
2066         s32 res;
2067         s32 denominator;
2068
2069         chnl_grp = &eeprom->groups[setting_index];
2070         samples = chnl_grp->samples;
2071         for (i = 0; i < 5; i++) {
2072                 if (power == samples[i].power) {
2073                         *new_index = samples[i].gain_index;
2074                         return 0;
2075                 }
2076         }
2077
2078         if (power > samples[1].power) {
2079                 index0 = 0;
2080                 index1 = 1;
2081         } else if (power > samples[2].power) {
2082                 index0 = 1;
2083                 index1 = 2;
2084         } else if (power > samples[3].power) {
2085                 index0 = 2;
2086                 index1 = 3;
2087         } else {
2088                 index0 = 3;
2089                 index1 = 4;
2090         }
2091
2092         denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2093         if (denominator == 0)
2094                 return -EINVAL;
2095         gains0 = (s32) samples[index0].gain_index * (1 << 19);
2096         gains1 = (s32) samples[index1].gain_index * (1 << 19);
2097         res = gains0 + (gains1 - gains0) *
2098             ((s32) power - (s32) samples[index0].power) / denominator +
2099             (1 << 18);
2100         *new_index = res >> 19;
2101         return 0;
2102 }
2103
2104 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2105 {
2106         u32 i;
2107         s32 rate_index;
2108         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2109         const struct iwl3945_eeprom_txpower_group *group;
2110
2111         IWL_DEBUG_POWER("Initializing factory calib info from EEPROM\n");
2112
2113         for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2114                 s8 *clip_pwrs;  /* table of power levels for each rate */
2115                 s8 satur_pwr;   /* saturation power for each chnl group */
2116                 group = &eeprom->groups[i];
2117
2118                 /* sanity check on factory saturation power value */
2119                 if (group->saturation_power < 40) {
2120                         IWL_WARN(priv, "Error: saturation power is %d, "
2121                                     "less than minimum expected 40\n",
2122                                     group->saturation_power);
2123                         return;
2124                 }
2125
2126                 /*
2127                  * Derive requested power levels for each rate, based on
2128                  *   hardware capabilities (saturation power for band).
2129                  * Basic value is 3dB down from saturation, with further
2130                  *   power reductions for highest 3 data rates.  These
2131                  *   backoffs provide headroom for high rate modulation
2132                  *   power peaks, without too much distortion (clipping).
2133                  */
2134                 /* we'll fill in this array with h/w max power levels */
2135                 clip_pwrs = (s8 *) priv->clip39_groups[i].clip_powers;
2136
2137                 /* divide factory saturation power by 2 to find -3dB level */
2138                 satur_pwr = (s8) (group->saturation_power >> 1);
2139
2140                 /* fill in channel group's nominal powers for each rate */
2141                 for (rate_index = 0;
2142                      rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
2143                         switch (rate_index) {
2144                         case IWL_RATE_36M_INDEX_TABLE:
2145                                 if (i == 0)     /* B/G */
2146                                         *clip_pwrs = satur_pwr;
2147                                 else    /* A */
2148                                         *clip_pwrs = satur_pwr - 5;
2149                                 break;
2150                         case IWL_RATE_48M_INDEX_TABLE:
2151                                 if (i == 0)
2152                                         *clip_pwrs = satur_pwr - 7;
2153                                 else
2154                                         *clip_pwrs = satur_pwr - 10;
2155                                 break;
2156                         case IWL_RATE_54M_INDEX_TABLE:
2157                                 if (i == 0)
2158                                         *clip_pwrs = satur_pwr - 9;
2159                                 else
2160                                         *clip_pwrs = satur_pwr - 12;
2161                                 break;
2162                         default:
2163                                 *clip_pwrs = satur_pwr;
2164                                 break;
2165                         }
2166                 }
2167         }
2168 }
2169
2170 /**
2171  * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2172  *
2173  * Second pass (during init) to set up priv->channel_info
2174  *
2175  * Set up Tx-power settings in our channel info database for each VALID
2176  * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2177  * and current temperature.
2178  *
2179  * Since this is based on current temperature (at init time), these values may
2180  * not be valid for very long, but it gives us a starting/default point,
2181  * and allows us to active (i.e. using Tx) scan.
2182  *
2183  * This does *not* write values to NIC, just sets up our internal table.
2184  */
2185 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2186 {
2187         struct iwl_channel_info *ch_info = NULL;
2188         struct iwl3945_channel_power_info *pwr_info;
2189         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2190         int delta_index;
2191         u8 rate_index;
2192         u8 scan_tbl_index;
2193         const s8 *clip_pwrs;    /* array of power levels for each rate */
2194         u8 gain, dsp_atten;
2195         s8 power;
2196         u8 pwr_index, base_pwr_index, a_band;
2197         u8 i;
2198         int temperature;
2199
2200         /* save temperature reference,
2201          *   so we can determine next time to calibrate */
2202         temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2203         priv->last_temperature = temperature;
2204
2205         iwl3945_hw_reg_init_channel_groups(priv);
2206
2207         /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2208         for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2209              i++, ch_info++) {
2210                 a_band = is_channel_a_band(ch_info);
2211                 if (!is_channel_valid(ch_info))
2212                         continue;
2213
2214                 /* find this channel's channel group (*not* "band") index */
2215                 ch_info->group_index =
2216                         iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2217
2218                 /* Get this chnlgrp's rate->max/clip-powers table */
2219                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
2220
2221                 /* calculate power index *adjustment* value according to
2222                  *  diff between current temperature and factory temperature */
2223                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2224                                 eeprom->groups[ch_info->group_index].
2225                                 temperature);
2226
2227                 IWL_DEBUG_POWER("Delta index for channel %d: %d [%d]\n",
2228                                 ch_info->channel, delta_index, temperature +
2229                                 IWL_TEMP_CONVERT);
2230
2231                 /* set tx power value for all OFDM rates */
2232                 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2233                      rate_index++) {
2234                         s32 uninitialized_var(power_idx);
2235                         int rc;
2236
2237                         /* use channel group's clip-power table,
2238                          *   but don't exceed channel's max power */
2239                         s8 pwr = min(ch_info->max_power_avg,
2240                                      clip_pwrs[rate_index]);
2241
2242                         pwr_info = &ch_info->power_info[rate_index];
2243
2244                         /* get base (i.e. at factory-measured temperature)
2245                          *    power table index for this rate's power */
2246                         rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2247                                                          ch_info->group_index,
2248                                                          &power_idx);
2249                         if (rc) {
2250                                 IWL_ERR(priv, "Invalid power index\n");
2251                                 return rc;
2252                         }
2253                         pwr_info->base_power_index = (u8) power_idx;
2254
2255                         /* temperature compensate */
2256                         power_idx += delta_index;
2257
2258                         /* stay within range of gain table */
2259                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2260
2261                         /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2262                         pwr_info->requested_power = pwr;
2263                         pwr_info->power_table_index = (u8) power_idx;
2264                         pwr_info->tpc.tx_gain =
2265                             power_gain_table[a_band][power_idx].tx_gain;
2266                         pwr_info->tpc.dsp_atten =
2267                             power_gain_table[a_band][power_idx].dsp_atten;
2268                 }
2269
2270                 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2271                 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2272                 power = pwr_info->requested_power +
2273                         IWL_CCK_FROM_OFDM_POWER_DIFF;
2274                 pwr_index = pwr_info->power_table_index +
2275                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2276                 base_pwr_index = pwr_info->base_power_index +
2277                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2278
2279                 /* stay within table range */
2280                 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2281                 gain = power_gain_table[a_band][pwr_index].tx_gain;
2282                 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2283
2284                 /* fill each CCK rate's iwl3945_channel_power_info structure
2285                  * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
2286                  * NOTE:  CCK rates start at end of OFDM rates! */
2287                 for (rate_index = 0;
2288                      rate_index < IWL_CCK_RATES; rate_index++) {
2289                         pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2290                         pwr_info->requested_power = power;
2291                         pwr_info->power_table_index = pwr_index;
2292                         pwr_info->base_power_index = base_pwr_index;
2293                         pwr_info->tpc.tx_gain = gain;
2294                         pwr_info->tpc.dsp_atten = dsp_atten;
2295                 }
2296
2297                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2298                 for (scan_tbl_index = 0;
2299                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2300                         s32 actual_index = (scan_tbl_index == 0) ?
2301                                 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2302                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2303                                 actual_index, clip_pwrs, ch_info, a_band);
2304                 }
2305         }
2306
2307         return 0;
2308 }
2309
2310 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2311 {
2312         int rc;
2313         unsigned long flags;
2314
2315         spin_lock_irqsave(&priv->lock, flags);
2316         rc = iwl_grab_nic_access(priv);
2317         if (rc) {
2318                 spin_unlock_irqrestore(&priv->lock, flags);
2319                 return rc;
2320         }
2321
2322         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2323         rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2324                         FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2325         if (rc < 0)
2326                 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2327
2328         iwl_release_nic_access(priv);
2329         spin_unlock_irqrestore(&priv->lock, flags);
2330
2331         return 0;
2332 }
2333
2334 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2335 {
2336         int rc;
2337         unsigned long flags;
2338         int txq_id = txq->q.id;
2339
2340         struct iwl3945_shared *shared_data = priv->shared_virt;
2341
2342         shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2343
2344         spin_lock_irqsave(&priv->lock, flags);
2345         rc = iwl_grab_nic_access(priv);
2346         if (rc) {
2347                 spin_unlock_irqrestore(&priv->lock, flags);
2348                 return rc;
2349         }
2350         iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2351         iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2352
2353         iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2354                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2355                 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2356                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2357                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2358                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2359         iwl_release_nic_access(priv);
2360
2361         /* fake read to flush all prev. writes */
2362         iwl_read32(priv, FH39_TSSR_CBB_BASE);
2363         spin_unlock_irqrestore(&priv->lock, flags);
2364
2365         return 0;
2366 }
2367
2368 /*
2369  * HCMD utils
2370  */
2371 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2372 {
2373         switch (cmd_id) {
2374         case REPLY_RXON:
2375                 return (u16) sizeof(struct iwl3945_rxon_cmd);
2376         default:
2377                 return len;
2378         }
2379 }
2380
2381 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2382 {
2383         u16 size = (u16)sizeof(struct iwl3945_addsta_cmd);
2384         memcpy(data, cmd, size);
2385         return size;
2386 }
2387
2388 /**
2389  * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2390  */
2391 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2392 {
2393         int rc, i, index, prev_index;
2394         struct iwl3945_rate_scaling_cmd rate_cmd = {
2395                 .reserved = {0, 0, 0},
2396         };
2397         struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2398
2399         for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2400                 index = iwl3945_rates[i].table_rs_index;
2401
2402                 table[index].rate_n_flags =
2403                         iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2404                 table[index].try_cnt = priv->retry_rate;
2405                 prev_index = iwl3945_get_prev_ieee_rate(i);
2406                 table[index].next_rate_index =
2407                                 iwl3945_rates[prev_index].table_rs_index;
2408         }
2409
2410         switch (priv->band) {
2411         case IEEE80211_BAND_5GHZ:
2412                 IWL_DEBUG_RATE("Select A mode rate scale\n");
2413                 /* If one of the following CCK rates is used,
2414                  * have it fall back to the 6M OFDM rate */
2415                 for (i = IWL_RATE_1M_INDEX_TABLE;
2416                         i <= IWL_RATE_11M_INDEX_TABLE; i++)
2417                         table[i].next_rate_index =
2418                           iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2419
2420                 /* Don't fall back to CCK rates */
2421                 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2422                                                 IWL_RATE_9M_INDEX_TABLE;
2423
2424                 /* Don't drop out of OFDM rates */
2425                 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2426                     iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2427                 break;
2428
2429         case IEEE80211_BAND_2GHZ:
2430                 IWL_DEBUG_RATE("Select B/G mode rate scale\n");
2431                 /* If an OFDM rate is used, have it fall back to the
2432                  * 1M CCK rates */
2433
2434                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2435                     iwl3945_is_associated(priv)) {
2436
2437                         index = IWL_FIRST_CCK_RATE;
2438                         for (i = IWL_RATE_6M_INDEX_TABLE;
2439                              i <= IWL_RATE_54M_INDEX_TABLE; i++)
2440                                 table[i].next_rate_index =
2441                                         iwl3945_rates[index].table_rs_index;
2442
2443                         index = IWL_RATE_11M_INDEX_TABLE;
2444                         /* CCK shouldn't fall back to OFDM... */
2445                         table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2446                 }
2447                 break;
2448
2449         default:
2450                 WARN_ON(1);
2451                 break;
2452         }
2453
2454         /* Update the rate scaling for control frame Tx */
2455         rate_cmd.table_id = 0;
2456         rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2457                               &rate_cmd);
2458         if (rc)
2459                 return rc;
2460
2461         /* Update the rate scaling for data frame Tx */
2462         rate_cmd.table_id = 1;
2463         return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2464                                 &rate_cmd);
2465 }
2466
2467 /* Called when initializing driver */
2468 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2469 {
2470         memset((void *)&priv->hw_params, 0,
2471                sizeof(struct iwl_hw_params));
2472
2473         priv->shared_virt =
2474             pci_alloc_consistent(priv->pci_dev,
2475                                  sizeof(struct iwl3945_shared),
2476                                  &priv->shared_phys);
2477
2478         if (!priv->shared_virt) {
2479                 IWL_ERR(priv, "failed to allocate pci memory\n");
2480                 mutex_unlock(&priv->mutex);
2481                 return -ENOMEM;
2482         }
2483
2484         priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2485         priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_3K;
2486         priv->hw_params.max_pkt_size = 2342;
2487         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2488         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2489         priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2490         priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID;
2491
2492         priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2493
2494         return 0;
2495 }
2496
2497 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2498                           struct iwl3945_frame *frame, u8 rate)
2499 {
2500         struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2501         unsigned int frame_size;
2502
2503         tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2504         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2505
2506         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2507         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2508
2509         frame_size = iwl3945_fill_beacon_frame(priv,
2510                                 tx_beacon_cmd->frame,
2511                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2512
2513         BUG_ON(frame_size > MAX_MPDU_SIZE);
2514         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2515
2516         tx_beacon_cmd->tx.rate = rate;
2517         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2518                                       TX_CMD_FLG_TSF_MSK);
2519
2520         /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2521         tx_beacon_cmd->tx.supp_rates[0] =
2522                 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2523
2524         tx_beacon_cmd->tx.supp_rates[1] =
2525                 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2526
2527         return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2528 }
2529
2530 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2531 {
2532         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2533         priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2534 }
2535
2536 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2537 {
2538         INIT_DELAYED_WORK(&priv->thermal_periodic,
2539                           iwl3945_bg_reg_txpower_periodic);
2540 }
2541
2542 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2543 {
2544         cancel_delayed_work(&priv->thermal_periodic);
2545 }
2546
2547 /* check contents of special bootstrap uCode SRAM */
2548 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2549  {
2550         __le32 *image = priv->ucode_boot.v_addr;
2551         u32 len = priv->ucode_boot.len;
2552         u32 reg;
2553         u32 val;
2554
2555         IWL_DEBUG_INFO("Begin verify bsm\n");
2556
2557         /* verify BSM SRAM contents */
2558         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2559         for (reg = BSM_SRAM_LOWER_BOUND;
2560              reg < BSM_SRAM_LOWER_BOUND + len;
2561              reg += sizeof(u32), image++) {
2562                 val = iwl_read_prph(priv, reg);
2563                 if (val != le32_to_cpu(*image)) {
2564                         IWL_ERR(priv, "BSM uCode verification failed at "
2565                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2566                                   BSM_SRAM_LOWER_BOUND,
2567                                   reg - BSM_SRAM_LOWER_BOUND, len,
2568                                   val, le32_to_cpu(*image));
2569                         return -EIO;
2570                 }
2571         }
2572
2573         IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
2574
2575         return 0;
2576 }
2577
2578
2579 /******************************************************************************
2580  *
2581  * EEPROM related functions
2582  *
2583  ******************************************************************************/
2584
2585 /*
2586  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2587  * embedded controller) as EEPROM reader; each read is a series of pulses
2588  * to/from the EEPROM chip, not a single event, so even reads could conflict
2589  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
2590  * simply claims ownership, which should be safe when this function is called
2591  * (i.e. before loading uCode!).
2592  */
2593 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2594 {
2595         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2596         return 0;
2597 }
2598
2599
2600 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2601 {
2602         return;
2603 }
2604
2605  /**
2606   * iwl3945_load_bsm - Load bootstrap instructions
2607   *
2608   * BSM operation:
2609   *
2610   * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2611   * in special SRAM that does not power down during RFKILL.  When powering back
2612   * up after power-saving sleeps (or during initial uCode load), the BSM loads
2613   * the bootstrap program into the on-board processor, and starts it.
2614   *
2615   * The bootstrap program loads (via DMA) instructions and data for a new
2616   * program from host DRAM locations indicated by the host driver in the
2617   * BSM_DRAM_* registers.  Once the new program is loaded, it starts
2618   * automatically.
2619   *
2620   * When initializing the NIC, the host driver points the BSM to the
2621   * "initialize" uCode image.  This uCode sets up some internal data, then
2622   * notifies host via "initialize alive" that it is complete.
2623   *
2624   * The host then replaces the BSM_DRAM_* pointer values to point to the
2625   * normal runtime uCode instructions and a backup uCode data cache buffer
2626   * (filled initially with starting data values for the on-board processor),
2627   * then triggers the "initialize" uCode to load and launch the runtime uCode,
2628   * which begins normal operation.
2629   *
2630   * When doing a power-save shutdown, runtime uCode saves data SRAM into
2631   * the backup data cache in DRAM before SRAM is powered down.
2632   *
2633   * When powering back up, the BSM loads the bootstrap program.  This reloads
2634   * the runtime uCode instructions and the backup data cache into SRAM,
2635   * and re-launches the runtime uCode from where it left off.
2636   */
2637 static int iwl3945_load_bsm(struct iwl_priv *priv)
2638 {
2639         __le32 *image = priv->ucode_boot.v_addr;
2640         u32 len = priv->ucode_boot.len;
2641         dma_addr_t pinst;
2642         dma_addr_t pdata;
2643         u32 inst_len;
2644         u32 data_len;
2645         int rc;
2646         int i;
2647         u32 done;
2648         u32 reg_offset;
2649
2650         IWL_DEBUG_INFO("Begin load bsm\n");
2651
2652         /* make sure bootstrap program is no larger than BSM's SRAM size */
2653         if (len > IWL39_MAX_BSM_SIZE)
2654                 return -EINVAL;
2655
2656         /* Tell bootstrap uCode where to find the "Initialize" uCode
2657         *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2658         * NOTE:  iwl3945_initialize_alive_start() will replace these values,
2659         *        after the "initialize" uCode has run, to point to
2660         *        runtime/protocol instructions and backup data cache. */
2661         pinst = priv->ucode_init.p_addr;
2662         pdata = priv->ucode_init_data.p_addr;
2663         inst_len = priv->ucode_init.len;
2664         data_len = priv->ucode_init_data.len;
2665
2666         rc = iwl_grab_nic_access(priv);
2667         if (rc)
2668                 return rc;
2669
2670         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2671         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2672         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2673         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2674
2675         /* Fill BSM memory with bootstrap instructions */
2676         for (reg_offset = BSM_SRAM_LOWER_BOUND;
2677              reg_offset < BSM_SRAM_LOWER_BOUND + len;
2678              reg_offset += sizeof(u32), image++)
2679                 _iwl_write_prph(priv, reg_offset,
2680                                           le32_to_cpu(*image));
2681
2682         rc = iwl3945_verify_bsm(priv);
2683         if (rc) {
2684                 iwl_release_nic_access(priv);
2685                 return rc;
2686         }
2687
2688         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2689         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2690         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2691                                  IWL39_RTC_INST_LOWER_BOUND);
2692         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2693
2694         /* Load bootstrap code into instruction SRAM now,
2695          *   to prepare to load "initialize" uCode */
2696         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2697                 BSM_WR_CTRL_REG_BIT_START);
2698
2699         /* Wait for load of bootstrap uCode to finish */
2700         for (i = 0; i < 100; i++) {
2701                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2702                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2703                         break;
2704                 udelay(10);
2705         }
2706         if (i < 100)
2707                 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
2708         else {
2709                 IWL_ERR(priv, "BSM write did not complete!\n");
2710                 return -EIO;
2711         }
2712
2713         /* Enable future boot loads whenever power management unit triggers it
2714          *   (e.g. when powering back up after power-save shutdown) */
2715         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2716                 BSM_WR_CTRL_REG_BIT_START_EN);
2717
2718         iwl_release_nic_access(priv);
2719
2720         return 0;
2721 }
2722
2723 static struct iwl_lib_ops iwl3945_lib = {
2724         .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2725         .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2726         .txq_init = iwl3945_hw_tx_queue_init,
2727         .load_ucode = iwl3945_load_bsm,
2728         .apm_ops = {
2729                 .init = iwl3945_apm_init,
2730                 .reset = iwl3945_apm_reset,
2731                 .stop = iwl3945_apm_stop,
2732                 .config = iwl3945_nic_config,
2733                 .set_pwr_src = iwl3945_set_pwr_src,
2734         },
2735         .eeprom_ops = {
2736                 .regulatory_bands = {
2737                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2738                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2739                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2740                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2741                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2742                         IWL3945_EEPROM_IMG_SIZE,
2743                         IWL3945_EEPROM_IMG_SIZE,
2744                 },
2745                 .verify_signature  = iwlcore_eeprom_verify_signature,
2746                 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2747                 .release_semaphore = iwl3945_eeprom_release_semaphore,
2748                 .query_addr = iwlcore_eeprom_query_addr,
2749         },
2750         .send_tx_power  = iwl3945_send_tx_power,
2751 };
2752
2753 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2754         .get_hcmd_size = iwl3945_get_hcmd_size,
2755         .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2756 };
2757
2758 static struct iwl_ops iwl3945_ops = {
2759         .lib = &iwl3945_lib,
2760         .utils = &iwl3945_hcmd_utils,
2761 };
2762
2763 static struct iwl_cfg iwl3945_bg_cfg = {
2764         .name = "3945BG",
2765         .fw_name_pre = IWL3945_FW_PRE,
2766         .ucode_api_max = IWL3945_UCODE_API_MAX,
2767         .ucode_api_min = IWL3945_UCODE_API_MIN,
2768         .sku = IWL_SKU_G,
2769         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2770         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2771         .ops = &iwl3945_ops,
2772         .mod_params = &iwl3945_mod_params
2773 };
2774
2775 static struct iwl_cfg iwl3945_abg_cfg = {
2776         .name = "3945ABG",
2777         .fw_name_pre = IWL3945_FW_PRE,
2778         .ucode_api_max = IWL3945_UCODE_API_MAX,
2779         .ucode_api_min = IWL3945_UCODE_API_MIN,
2780         .sku = IWL_SKU_A|IWL_SKU_G,
2781         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2782         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2783         .ops = &iwl3945_ops,
2784         .mod_params = &iwl3945_mod_params
2785 };
2786
2787 struct pci_device_id iwl3945_hw_card_ids[] = {
2788         {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2789         {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2790         {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2791         {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2792         {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2793         {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2794         {0}
2795 };
2796
2797 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);