SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-3945.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  *  Intel Linux Wireless <ilw@linux.intel.com>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  *****************************************************************************/
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/pci.h>
  31 #include <linux/dma-mapping.h>
  32 #include <linux/delay.h>
  33 #include <linux/skbuff.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/wireless.h>
  36 #include <linux/firmware.h>
  37 #include <linux/etherdevice.h>
  38 #include <asm/unaligned.h>
  39 #include <net/mac80211.h>
  40
  41 #include "iwl-fh.h"
  42 #include "iwl-3945-fh.h"
  43 #include "iwl-commands.h"
  44 #include "iwl-sta.h"
  45 #include "iwl-3945.h"
  46 #include "iwl-eeprom.h"
  47 #include "iwl-helpers.h"
  48 #include "iwl-core.h"
  49 #include "iwl-agn-rs.h"
  50
  51 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np)    \
  52         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,   \
  53                                     IWL_RATE_##r##M_IEEE,   \
  54                                     IWL_RATE_##ip##M_INDEX, \
  55                                     IWL_RATE_##in##M_INDEX, \
  56                                     IWL_RATE_##rp##M_INDEX, \
  57                                     IWL_RATE_##rn##M_INDEX, \
  58                                     IWL_RATE_##pp##M_INDEX, \
  59                                     IWL_RATE_##np##M_INDEX, \
  60                                     IWL_RATE_##r##M_INDEX_TABLE, \
  61                                     IWL_RATE_##ip##M_INDEX_TABLE }
  62
  63 /*
  64  * Parameter order:
  65  *   rate, prev rate, next rate, prev tgg rate, next tgg rate
  66  *
  67  * If there isn't a valid next or previous rate then INV is used which
  68  * maps to IWL_RATE_INVALID
  69  *
  70  */
  71 const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
  72         IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2),    /*  1mbps */
  73         IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5),          /*  2mbps */
  74         IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
  75         IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18),      /* 11mbps */
  76         IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
  77         IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11),       /*  9mbps */
  78         IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
  79         IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
  80         IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
  81         IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
  82         IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
  83         IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
  84 };
  85
  86 /* 1 = enable the iwl3945_disable_events() function */
  87 #define IWL_EVT_DISABLE (0)
  88 #define IWL_EVT_DISABLE_SIZE (1532/32)
  89
  90 /**
  91  * iwl3945_disable_events - Disable selected events in uCode event log
  92  *
  93  * Disable an event by writing "1"s into "disable"
  94  *   bitmap in SRAM.  Bit position corresponds to Event # (id/type).
  95  *   Default values of 0 enable uCode events to be logged.
  96  * Use for only special debugging.  This function is just a placeholder as-is,
  97  *   you'll need to provide the special bits! ...
  98  *   ... and set IWL_EVT_DISABLE to 1. */
  99 void iwl3945_disable_events(struct iwl_priv *priv)
 100 {
 101         int i;
 102         u32 base;               /* SRAM address of event log header */
 103         u32 disable_ptr;        /* SRAM address of event-disable bitmap array */
 104         u32 array_size;         /* # of u32 entries in array */
 105         u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
 106                 0x00000000,     /*   31 -    0  Event id numbers */
 107                 0x00000000,     /*   63 -   32 */
 108                 0x00000000,     /*   95 -   64 */
 109                 0x00000000,     /*  127 -   96 */
 110                 0x00000000,     /*  159 -  128 */
 111                 0x00000000,     /*  191 -  160 */
 112                 0x00000000,     /*  223 -  192 */
 113                 0x00000000,     /*  255 -  224 */
 114                 0x00000000,     /*  287 -  256 */
 115                 0x00000000,     /*  319 -  288 */
 116                 0x00000000,     /*  351 -  320 */
 117                 0x00000000,     /*  383 -  352 */
 118                 0x00000000,     /*  415 -  384 */
 119                 0x00000000,     /*  447 -  416 */
 120                 0x00000000,     /*  479 -  448 */
 121                 0x00000000,     /*  511 -  480 */
 122                 0x00000000,     /*  543 -  512 */
 123                 0x00000000,     /*  575 -  544 */
 124                 0x00000000,     /*  607 -  576 */
 125                 0x00000000,     /*  639 -  608 */
 126                 0x00000000,     /*  671 -  640 */
 127                 0x00000000,     /*  703 -  672 */
 128                 0x00000000,     /*  735 -  704 */
 129                 0x00000000,     /*  767 -  736 */
 130                 0x00000000,     /*  799 -  768 */
 131                 0x00000000,     /*  831 -  800 */
 132                 0x00000000,     /*  863 -  832 */
 133                 0x00000000,     /*  895 -  864 */
 134                 0x00000000,     /*  927 -  896 */
 135                 0x00000000,     /*  959 -  928 */
 136                 0x00000000,     /*  991 -  960 */
 137                 0x00000000,     /* 1023 -  992 */
 138                 0x00000000,     /* 1055 - 1024 */
 139                 0x00000000,     /* 1087 - 1056 */
 140                 0x00000000,     /* 1119 - 1088 */
 141                 0x00000000,     /* 1151 - 1120 */
 142                 0x00000000,     /* 1183 - 1152 */
 143                 0x00000000,     /* 1215 - 1184 */
 144                 0x00000000,     /* 1247 - 1216 */
 145                 0x00000000,     /* 1279 - 1248 */
 146                 0x00000000,     /* 1311 - 1280 */
 147                 0x00000000,     /* 1343 - 1312 */
 148                 0x00000000,     /* 1375 - 1344 */
 149                 0x00000000,     /* 1407 - 1376 */
 150                 0x00000000,     /* 1439 - 1408 */
 151                 0x00000000,     /* 1471 - 1440 */
 152                 0x00000000,     /* 1503 - 1472 */
 153         };
 154
 155         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
 156         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
 157                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
 158                 return;
 159         }
 160
 161         disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32)));
 162         array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32)));
 163
 164         if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
 165                 IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
 166                                disable_ptr);
 167                 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
 168                         iwl_write_targ_mem(priv,
 169                                            disable_ptr + (i * sizeof(u32)),
 170                                            evt_disable[i]);
 171
 172         } else {
 173                 IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
 174                 IWL_DEBUG_INFO(priv, "  by writing \"1\"s into disable bitmap\n");
 175                 IWL_DEBUG_INFO(priv, "  in SRAM at 0x%x, size %d u32s\n",
 176                                disable_ptr, array_size);
 177         }
 178
 179 }
 180
 181 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
 182 {
 183         int idx;
 184
 185         for (idx = 0; idx < IWL_RATE_COUNT; idx++)
 186                 if (iwl3945_rates[idx].plcp == plcp)
 187                         return idx;
 188         return -1;
 189 }
 190
 191 #ifdef CONFIG_IWLWIFI_DEBUG
 192 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 193
 194 static const char *iwl3945_get_tx_fail_reason(u32 status)
 195 {
 196         switch (status & TX_STATUS_MSK) {
 197         case TX_STATUS_SUCCESS:
 198                 return "SUCCESS";
 199                 TX_STATUS_ENTRY(SHORT_LIMIT);
 200                 TX_STATUS_ENTRY(LONG_LIMIT);
 201                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 202                 TX_STATUS_ENTRY(MGMNT_ABORT);
 203                 TX_STATUS_ENTRY(NEXT_FRAG);
 204                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 205                 TX_STATUS_ENTRY(DEST_PS);
 206                 TX_STATUS_ENTRY(ABORTED);
 207                 TX_STATUS_ENTRY(BT_RETRY);
 208                 TX_STATUS_ENTRY(STA_INVALID);
 209                 TX_STATUS_ENTRY(FRAG_DROPPED);
 210                 TX_STATUS_ENTRY(TID_DISABLE);
 211                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 212                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 213                 TX_STATUS_ENTRY(TX_LOCKED);
 214                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 215         }
 216
 217         return "UNKNOWN";
 218 }
 219 #else
 220 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
 221 {
 222         return "";
 223 }
 224 #endif
 225
 226 /*
 227  * get ieee prev rate from rate scale table.
 228  * for A and B mode we need to overright prev
 229  * value
 230  */
 231 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
 232 {
 233         int next_rate = iwl3945_get_prev_ieee_rate(rate);
 234
 235         switch (priv->band) {
 236         case IEEE80211_BAND_5GHZ:
 237                 if (rate == IWL_RATE_12M_INDEX)
 238                         next_rate = IWL_RATE_9M_INDEX;
 239                 else if (rate == IWL_RATE_6M_INDEX)
 240                         next_rate = IWL_RATE_6M_INDEX;
 241                 break;
 242         case IEEE80211_BAND_2GHZ:
 243                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
 244                     iwl_is_associated(priv)) {
 245                         if (rate == IWL_RATE_11M_INDEX)
 246                                 next_rate = IWL_RATE_5M_INDEX;
 247                 }
 248                 break;
 249
 250         default:
 251                 break;
 252         }
 253
 254         return next_rate;
 255 }
 256
 257
 258 /**
 259  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
 260  *
 261  * When FW advances 'R' index, all entries between old and new 'R' index
 262  * need to be reclaimed. As result, some free space forms. If there is
 263  * enough free space (> low mark), wake the stack that feeds us.
 264  */
 265 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
 266                                      int txq_id, int index)
 267 {
 268         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 269         struct iwl_queue *q = &txq->q;
 270         struct iwl_tx_info *tx_info;
 271
 272         BUG_ON(txq_id == IWL_CMD_QUEUE_NUM);
 273
 274         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
 275                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
 276
 277                 tx_info = &txq->txb[txq->q.read_ptr];
 278                 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
 279                 tx_info->skb[0] = NULL;
 280                 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
 281         }
 282
 283         if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
 284                         (txq_id != IWL_CMD_QUEUE_NUM) &&
 285                         priv->mac80211_registered)
 286                 iwl_wake_queue(priv, txq_id);
 287 }
 288
 289 /**
 290  * iwl3945_rx_reply_tx - Handle Tx response
 291  */
 292 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
 293                             struct iwl_rx_mem_buffer *rxb)
 294 {
 295         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 296         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
 297         int txq_id = SEQ_TO_QUEUE(sequence);
 298         int index = SEQ_TO_INDEX(sequence);
 299         struct iwl_tx_queue *txq = &priv->txq[txq_id];
 300         struct ieee80211_tx_info *info;
 301         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
 302         u32  status = le32_to_cpu(tx_resp->status);
 303         int rate_idx;
 304         int fail;
 305
 306         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
 307                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
 308                           "is out of range [0-%d] %d %d\n", txq_id,
 309                           index, txq->q.n_bd, txq->q.write_ptr,
 310                           txq->q.read_ptr);
 311                 return;
 312         }
 313
 314         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
 315         ieee80211_tx_info_clear_status(info);
 316
 317         /* Fill the MRR chain with some info about on-chip retransmissions */
 318         rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
 319         if (info->band == IEEE80211_BAND_5GHZ)
 320                 rate_idx -= IWL_FIRST_OFDM_RATE;
 321
 322         fail = tx_resp->failure_frame;
 323
 324         info->status.rates[0].idx = rate_idx;
 325         info->status.rates[0].count = fail + 1; /* add final attempt */
 326
 327         /* tx_status->rts_retry_count = tx_resp->failure_rts; */
 328         info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
 329                                 IEEE80211_TX_STAT_ACK : 0;
 330
 331         IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
 332                         txq_id, iwl3945_get_tx_fail_reason(status), status,
 333                         tx_resp->rate, tx_resp->failure_frame);
 334
 335         IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
 336         iwl3945_tx_queue_reclaim(priv, txq_id, index);
 337
 338         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
 339                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
 340 }
 341
 342
 343
 344 /*****************************************************************************
 345  *
 346  * Intel PRO/Wireless 3945ABG/BG Network Connection
 347  *
 348  *  RX handler implementations
 349  *
 350  *****************************************************************************/
 351
 352 void iwl3945_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 353 {
 354         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 355         IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
 356                      (int)sizeof(struct iwl3945_notif_statistics),
 357                      le32_to_cpu(pkt->len));
 358
 359         memcpy(&priv->statistics_39, pkt->u.raw, sizeof(priv->statistics_39));
 360
 361         iwl3945_led_background(priv);
 362
 363         priv->last_statistics_time = jiffies;
 364 }
 365
 366 /******************************************************************************
 367  *
 368  * Misc. internal state and helper functions
 369  *
 370  ******************************************************************************/
 371 #ifdef CONFIG_IWLWIFI_DEBUG
 372
 373 /**
 374  * iwl3945_report_frame - dump frame to syslog during debug sessions
 375  *
 376  * You may hack this function to show different aspects of received frames,
 377  * including selective frame dumps.
 378  * group100 parameter selects whether to show 1 out of 100 good frames.
 379  */
 380 static void _iwl3945_dbg_report_frame(struct iwl_priv *priv,
 381                       struct iwl_rx_packet *pkt,
 382                       struct ieee80211_hdr *header, int group100)
 383 {
 384         u32 to_us;
 385         u32 print_summary = 0;
 386         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
 387         u32 hundred = 0;
 388         u32 dataframe = 0;
 389         __le16 fc;
 390         u16 seq_ctl;
 391         u16 channel;
 392         u16 phy_flags;
 393         u16 length;
 394         u16 status;
 395         u16 bcn_tmr;
 396         u32 tsf_low;
 397         u64 tsf;
 398         u8 rssi;
 399         u8 agc;
 400         u16 sig_avg;
 401         u16 noise_diff;
 402         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 403         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 404         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 405         u8 *data = IWL_RX_DATA(pkt);
 406
 407         /* MAC header */
 408         fc = header->frame_control;
 409         seq_ctl = le16_to_cpu(header->seq_ctrl);
 410
 411         /* metadata */
 412         channel = le16_to_cpu(rx_hdr->channel);
 413         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
 414         length = le16_to_cpu(rx_hdr->len);
 415
 416         /* end-of-frame status and timestamp */
 417         status = le32_to_cpu(rx_end->status);
 418         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
 419         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
 420         tsf = le64_to_cpu(rx_end->timestamp);
 421
 422         /* signal statistics */
 423         rssi = rx_stats->rssi;
 424         agc = rx_stats->agc;
 425         sig_avg = le16_to_cpu(rx_stats->sig_avg);
 426         noise_diff = le16_to_cpu(rx_stats->noise_diff);
 427
 428         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
 429
 430         /* if data frame is to us and all is good,
 431          *   (optionally) print summary for only 1 out of every 100 */
 432         if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
 433             cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
 434                 dataframe = 1;
 435                 if (!group100)
 436                         print_summary = 1;      /* print each frame */
 437                 else if (priv->framecnt_to_us < 100) {
 438                         priv->framecnt_to_us++;
 439                         print_summary = 0;
 440                 } else {
 441                         priv->framecnt_to_us = 0;
 442                         print_summary = 1;
 443                         hundred = 1;
 444                 }
 445         } else {
 446                 /* print summary for all other frames */
 447                 print_summary = 1;
 448         }
 449
 450         if (print_summary) {
 451                 char *title;
 452                 int rate;
 453
 454                 if (hundred)
 455                         title = "100Frames";
 456                 else if (ieee80211_has_retry(fc))
 457                         title = "Retry";
 458                 else if (ieee80211_is_assoc_resp(fc))
 459                         title = "AscRsp";
 460                 else if (ieee80211_is_reassoc_resp(fc))
 461                         title = "RasRsp";
 462                 else if (ieee80211_is_probe_resp(fc)) {
 463                         title = "PrbRsp";
 464                         print_dump = 1; /* dump frame contents */
 465                 } else if (ieee80211_is_beacon(fc)) {
 466                         title = "Beacon";
 467                         print_dump = 1; /* dump frame contents */
 468                 } else if (ieee80211_is_atim(fc))
 469                         title = "ATIM";
 470                 else if (ieee80211_is_auth(fc))
 471                         title = "Auth";
 472                 else if (ieee80211_is_deauth(fc))
 473                         title = "DeAuth";
 474                 else if (ieee80211_is_disassoc(fc))
 475                         title = "DisAssoc";
 476                 else
 477                         title = "Frame";
 478
 479                 rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 480                 if (rate == -1)
 481                         rate = 0;
 482                 else
 483                         rate = iwl3945_rates[rate].ieee / 2;
 484
 485                 /* print frame summary.
 486                  * MAC addresses show just the last byte (for brevity),
 487                  *    but you can hack it to show more, if you'd like to. */
 488                 if (dataframe)
 489                         IWL_DEBUG_RX(priv, "%s: mhd=0x%04x, dst=0x%02x, "
 490                                      "len=%u, rssi=%d, chnl=%d, rate=%d, \n",
 491                                      title, le16_to_cpu(fc), header->addr1[5],
 492                                      length, rssi, channel, rate);
 493                 else {
 494                         /* src/dst addresses assume managed mode */
 495                         IWL_DEBUG_RX(priv, "%s: 0x%04x, dst=0x%02x, "
 496                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
 497                                      "phy=0x%02x, chnl=%d\n",
 498                                      title, le16_to_cpu(fc), header->addr1[5],
 499                                      header->addr3[5], rssi,
 500                                      tsf_low - priv->scan_start_tsf,
 501                                      phy_flags, channel);
 502                 }
 503         }
 504         if (print_dump)
 505                 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
 506 }
 507
 508 static void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 509                       struct iwl_rx_packet *pkt,
 510                       struct ieee80211_hdr *header, int group100)
 511 {
 512         if (iwl_get_debug_level(priv) & IWL_DL_RX)
 513                 _iwl3945_dbg_report_frame(priv, pkt, header, group100);
 514 }
 515
 516 #else
 517 static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv,
 518                       struct iwl_rx_packet *pkt,
 519                       struct ieee80211_hdr *header, int group100)
 520 {
 521 }
 522 #endif
 523
 524 /* This is necessary only for a number of statistics, see the caller. */
 525 static int iwl3945_is_network_packet(struct iwl_priv *priv,
 526                 struct ieee80211_hdr *header)
 527 {
 528         /* Filter incoming packets to determine if they are targeted toward
 529          * this network, discarding packets coming from ourselves */
 530         switch (priv->iw_mode) {
 531         case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source    | BSSID */
 532                 /* packets to our IBSS update information */
 533                 return !compare_ether_addr(header->addr3, priv->bssid);
 534         case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
 535                 /* packets to our IBSS update information */
 536                 return !compare_ether_addr(header->addr2, priv->bssid);
 537         default:
 538                 return 1;
 539         }
 540 }
 541
 542 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
 543                                    struct iwl_rx_mem_buffer *rxb,
 544                                    struct ieee80211_rx_status *stats)
 545 {
 546         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 547 #ifdef CONFIG_IWLWIFI_LEDS
 548         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 549 #endif
 550         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 551         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 552         short len = le16_to_cpu(rx_hdr->len);
 553
 554         /* We received data from the HW, so stop the watchdog */
 555         if (unlikely((len + IWL39_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) {
 556                 IWL_DEBUG_DROP(priv, "Corruption detected!\n");
 557                 return;
 558         }
 559
 560         /* We only process data packets if the interface is open */
 561         if (unlikely(!priv->is_open)) {
 562                 IWL_DEBUG_DROP_LIMIT(priv,
 563                         "Dropping packet while interface is not open.\n");
 564                 return;
 565         }
 566
 567         skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt);
 568         /* Set the size of the skb to the size of the frame */
 569         skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
 570
 571         if (!iwl3945_mod_params.sw_crypto)
 572                 iwl_set_decrypted_flag(priv,
 573                                        (struct ieee80211_hdr *)rxb->skb->data,
 574                                        le32_to_cpu(rx_end->status), stats);
 575
 576 #ifdef CONFIG_IWLWIFI_LEDS
 577         if (ieee80211_is_data(hdr->frame_control))
 578                 priv->rxtxpackets += len;
 579 #endif
 580         memcpy(IEEE80211_SKB_RXCB(rxb->skb), stats, sizeof(*stats));
 581         ieee80211_rx_irqsafe(priv->hw, rxb->skb);
 582         rxb->skb = NULL;
 583 }
 584
 585 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
 586
 587 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
 588                                 struct iwl_rx_mem_buffer *rxb)
 589 {
 590         struct ieee80211_hdr *header;
 591         struct ieee80211_rx_status rx_status;
 592         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
 593         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
 594         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
 595         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
 596         int snr;
 597         u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
 598         u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
 599         u8 network_packet;
 600
 601         rx_status.flag = 0;
 602         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
 603         rx_status.freq =
 604                 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
 605         rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
 606                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
 607
 608         rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
 609         if (rx_status.band == IEEE80211_BAND_5GHZ)
 610                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
 611
 612         rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
 613                                         RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
 614
 615         /* set the preamble flag if appropriate */
 616         if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
 617                 rx_status.flag |= RX_FLAG_SHORTPRE;
 618
 619         if ((unlikely(rx_stats->phy_count > 20))) {
 620                 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
 621                                 rx_stats->phy_count);
 622                 return;
 623         }
 624
 625         if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
 626             || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
 627                 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
 628                 return;
 629         }
 630
 631
 632
 633         /* Convert 3945's rssi indicator to dBm */
 634         rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
 635
 636         /* Set default noise value to -127 */
 637         if (priv->last_rx_noise == 0)
 638                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
 639
 640         /* 3945 provides noise info for OFDM frames only.
 641          * sig_avg and noise_diff are measured by the 3945's digital signal
 642          *   processor (DSP), and indicate linear levels of signal level and
 643          *   distortion/noise within the packet preamble after
 644          *   automatic gain control (AGC).  sig_avg should stay fairly
 645          *   constant if the radio's AGC is working well.
 646          * Since these values are linear (not dB or dBm), linear
 647          *   signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
 648          * Convert linear SNR to dB SNR, then subtract that from rssi dBm
 649          *   to obtain noise level in dBm.
 650          * Calculate rx_status.signal (quality indicator in %) based on SNR. */
 651         if (rx_stats_noise_diff) {
 652                 snr = rx_stats_sig_avg / rx_stats_noise_diff;
 653                 rx_status.noise = rx_status.signal -
 654                                         iwl3945_calc_db_from_ratio(snr);
 655                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
 656                                                          rx_status.noise);
 657
 658         /* If noise info not available, calculate signal quality indicator (%)
 659          *   using just the dBm signal level. */
 660         } else {
 661                 rx_status.noise = priv->last_rx_noise;
 662                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
 663         }
 664
 665
 666         IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
 667                         rx_status.signal, rx_status.noise, rx_status.qual,
 668                         rx_stats_sig_avg, rx_stats_noise_diff);
 669
 670         header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
 671
 672         network_packet = iwl3945_is_network_packet(priv, header);
 673
 674         IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
 675                               network_packet ? '*' : ' ',
 676                               le16_to_cpu(rx_hdr->channel),
 677                               rx_status.signal, rx_status.signal,
 678                               rx_status.noise, rx_status.rate_idx);
 679
 680         /* Set "1" to report good data frames in groups of 100 */
 681         iwl3945_dbg_report_frame(priv, pkt, header, 1);
 682
 683         if (network_packet) {
 684                 priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
 685                 priv->last_tsf = le64_to_cpu(rx_end->timestamp);
 686                 priv->last_rx_rssi = rx_status.signal;
 687                 priv->last_rx_noise = rx_status.noise;
 688         }
 689
 690         iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
 691 }
 692
 693 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 694                                      struct iwl_tx_queue *txq,
 695                                      dma_addr_t addr, u16 len, u8 reset, u8 pad)
 696 {
 697         int count;
 698         struct iwl_queue *q;
 699         struct iwl3945_tfd *tfd, *tfd_tmp;
 700
 701         q = &txq->q;
 702         tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 703         tfd = &tfd_tmp[q->write_ptr];
 704
 705         if (reset)
 706                 memset(tfd, 0, sizeof(*tfd));
 707
 708         count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 709
 710         if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
 711                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
 712                           NUM_TFD_CHUNKS);
 713                 return -EINVAL;
 714         }
 715
 716         tfd->tbs[count].addr = cpu_to_le32(addr);
 717         tfd->tbs[count].len = cpu_to_le32(len);
 718
 719         count++;
 720
 721         tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
 722                                          TFD_CTL_PAD_SET(pad));
 723
 724         return 0;
 725 }
 726
 727 /**
 728  * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
 729  *
 730  * Does NOT advance any indexes
 731  */
 732 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 733 {
 734         struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
 735         int index = txq->q.read_ptr;
 736         struct iwl3945_tfd *tfd = &tfd_tmp[index];
 737         struct pci_dev *dev = priv->pci_dev;
 738         int i;
 739         int counter;
 740
 741         /* sanity check */
 742         counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
 743         if (counter > NUM_TFD_CHUNKS) {
 744                 IWL_ERR(priv, "Too many chunks: %i\n", counter);
 745                 /* @todo issue fatal error, it is quite serious situation */
 746                 return;
 747         }
 748
 749         /* Unmap tx_cmd */
 750         if (counter)
 751                 pci_unmap_single(dev,
 752                                 pci_unmap_addr(&txq->meta[index], mapping),
 753                                 pci_unmap_len(&txq->meta[index], len),
 754                                 PCI_DMA_TODEVICE);
 755
 756         /* unmap chunks if any */
 757
 758         for (i = 1; i < counter; i++) {
 759                 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
 760                          le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
 761                 if (txq->txb[txq->q.read_ptr].skb[0]) {
 762                         struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
 763                         if (txq->txb[txq->q.read_ptr].skb[0]) {
 764                                 /* Can be called from interrupt context */
 765                                 dev_kfree_skb_any(skb);
 766                                 txq->txb[txq->q.read_ptr].skb[0] = NULL;
 767                         }
 768                 }
 769         }
 770         return ;
 771 }
 772
 773 /**
 774  * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
 775  *
 776 */
 777 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
 778                                   struct iwl_device_cmd *cmd,
 779                                   struct ieee80211_tx_info *info,
 780                                   struct ieee80211_hdr *hdr,
 781                                   int sta_id, int tx_id)
 782 {
 783         u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
 784         u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
 785         u16 rate_mask;
 786         int rate;
 787         u8 rts_retry_limit;
 788         u8 data_retry_limit;
 789         __le32 tx_flags;
 790         __le16 fc = hdr->frame_control;
 791         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
 792
 793         rate = iwl3945_rates[rate_index].plcp;
 794         tx_flags = tx->tx_flags;
 795
 796         /* We need to figure out how to get the sta->supp_rates while
 797          * in this running context */
 798         rate_mask = IWL_RATES_MASK;
 799
 800         if (tx_id >= IWL_CMD_QUEUE_NUM)
 801                 rts_retry_limit = 3;
 802         else
 803                 rts_retry_limit = 7;
 804
 805         if (ieee80211_is_probe_resp(fc)) {
 806                 data_retry_limit = 3;
 807                 if (data_retry_limit < rts_retry_limit)
 808                         rts_retry_limit = data_retry_limit;
 809         } else
 810                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
 811
 812         if (priv->data_retry_limit != -1)
 813                 data_retry_limit = priv->data_retry_limit;
 814
 815         if (ieee80211_is_mgmt(fc)) {
 816                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
 817                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
 818                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
 819                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
 820                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
 821                         if (tx_flags & TX_CMD_FLG_RTS_MSK) {
 822                                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
 823                                 tx_flags |= TX_CMD_FLG_CTS_MSK;
 824                         }
 825                         break;
 826                 default:
 827                         break;
 828                 }
 829         }
 830
 831         tx->rts_retry_limit = rts_retry_limit;
 832         tx->data_retry_limit = data_retry_limit;
 833         tx->rate = rate;
 834         tx->tx_flags = tx_flags;
 835
 836         /* OFDM */
 837         tx->supp_rates[0] =
 838            ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
 839
 840         /* CCK */
 841         tx->supp_rates[1] = (rate_mask & 0xF);
 842
 843         IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
 844                        "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
 845                        tx->rate, le32_to_cpu(tx->tx_flags),
 846                        tx->supp_rates[1], tx->supp_rates[0]);
 847 }
 848
 849 u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
 850 {
 851         unsigned long flags_spin;
 852         struct iwl_station_entry *station;
 853
 854         if (sta_id == IWL_INVALID_STATION)
 855                 return IWL_INVALID_STATION;
 856
 857         spin_lock_irqsave(&priv->sta_lock, flags_spin);
 858         station = &priv->stations[sta_id];
 859
 860         station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
 861         station->sta.rate_n_flags = cpu_to_le16(tx_rate);
 862         station->sta.mode = STA_CONTROL_MODIFY_MSK;
 863
 864         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
 865
 866         iwl_send_add_sta(priv, &station->sta, flags);
 867         IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
 868                         sta_id, tx_rate);
 869         return sta_id;
 870 }
 871
 872 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
 873 {
 874         if (src == IWL_PWR_SRC_VAUX) {
 875                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
 876                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 877                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
 878                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
 879
 880                         iwl_poll_bit(priv, CSR_GPIO_IN,
 881                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
 882                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
 883                 }
 884         } else {
 885                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
 886                                 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
 887                                 ~APMG_PS_CTRL_MSK_PWR_SRC);
 888
 889                 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
 890                              CSR_GPIO_IN_BIT_AUX_POWER, 5000);  /* uS */
 891         }
 892
 893         return 0;
 894 }
 895
 896 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 897 {
 898         iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr);
 899         iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
 900         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
 901         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
 902                 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
 903                 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
 904                 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
 905                 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
 906                 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
 907                 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
 908                 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
 909                 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
 910
 911         /* fake read to flush all prev I/O */
 912         iwl_read_direct32(priv, FH39_RSSR_CTRL);
 913
 914         return 0;
 915 }
 916
 917 static int iwl3945_tx_reset(struct iwl_priv *priv)
 918 {
 919
 920         /* bypass mode */
 921         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
 922
 923         /* RA 0 is active */
 924         iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
 925
 926         /* all 6 fifo are active */
 927         iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
 928
 929         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
 930         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
 931         iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
 932         iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
 933
 934         iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
 935                              priv->shared_phys);
 936
 937         iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
 938                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
 939                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
 940                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
 941                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
 942                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
 943                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
 944                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
 945
 946
 947         return 0;
 948 }
 949
 950 /**
 951  * iwl3945_txq_ctx_reset - Reset TX queue context
 952  *
 953  * Destroys all DMA structures and initialize them again
 954  */
 955 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
 956 {
 957         int rc;
 958         int txq_id, slots_num;
 959
 960         iwl3945_hw_txq_ctx_free(priv);
 961
 962         /* Tx CMD queue */
 963         rc = iwl3945_tx_reset(priv);
 964         if (rc)
 965                 goto error;
 966
 967         /* Tx queue(s) */
 968         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
 969                 slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
 970                                 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
 971                 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
 972                                        txq_id);
 973                 if (rc) {
 974                         IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
 975                         goto error;
 976                 }
 977         }
 978
 979         return rc;
 980
 981  error:
 982         iwl3945_hw_txq_ctx_free(priv);
 983         return rc;
 984 }
 985
 986 static int iwl3945_apm_init(struct iwl_priv *priv)
 987 {
 988         int ret;
 989
 990         iwl_power_initialize(priv);
 991
 992         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 993                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
 994
 995         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
 996         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
 997                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
 998
 999         /* set "initialization complete" bit to move adapter
1000         * D0U* --> D0A* state */
1001         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1002
1003         ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1004                             CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1005         if (ret < 0) {
1006                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1007                 goto out;
1008         }
1009
1010         /* enable DMA */
1011         iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
1012                                                 APMG_CLK_VAL_BSM_CLK_RQT);
1013
1014         udelay(20);
1015
1016         /* disable L1-Active */
1017         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1018                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1019
1020 out:
1021         return ret;
1022 }
1023
1024 static void iwl3945_nic_config(struct iwl_priv *priv)
1025 {
1026         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1027         unsigned long flags;
1028         u8 rev_id = 0;
1029
1030         spin_lock_irqsave(&priv->lock, flags);
1031
1032         /* Determine HW type */
1033         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
1034
1035         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
1036
1037         if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
1038                 IWL_DEBUG_INFO(priv, "RTP type \n");
1039         else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
1040                 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
1041                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1042                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
1043         } else {
1044                 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
1045                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1046                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
1047         }
1048
1049         if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
1050                 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
1051                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1052                             CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
1053         } else
1054                 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
1055
1056         if ((eeprom->board_revision & 0xF0) == 0xD0) {
1057                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1058                                eeprom->board_revision);
1059                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1060                             CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1061         } else {
1062                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1063                                eeprom->board_revision);
1064                 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1065                               CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1066         }
1067
1068         if (eeprom->almgor_m_version <= 1) {
1069                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1070                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1071                 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
1072                                eeprom->almgor_m_version);
1073         } else {
1074                 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
1075                                eeprom->almgor_m_version);
1076                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1077                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1078         }
1079         spin_unlock_irqrestore(&priv->lock, flags);
1080
1081         if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1082                 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
1083
1084         if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1085                 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
1086 }
1087
1088 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1089 {
1090         int rc;
1091         unsigned long flags;
1092         struct iwl_rx_queue *rxq = &priv->rxq;
1093
1094         spin_lock_irqsave(&priv->lock, flags);
1095         priv->cfg->ops->lib->apm_ops.init(priv);
1096         spin_unlock_irqrestore(&priv->lock, flags);
1097
1098         rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
1099         if (rc)
1100                 return rc;
1101
1102         priv->cfg->ops->lib->apm_ops.config(priv);
1103
1104         /* Allocate the RX queue, or reset if it is already allocated */
1105         if (!rxq->bd) {
1106                 rc = iwl_rx_queue_alloc(priv);
1107                 if (rc) {
1108                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
1109                         return -ENOMEM;
1110                 }
1111         } else
1112                 iwl3945_rx_queue_reset(priv, rxq);
1113
1114         iwl3945_rx_replenish(priv);
1115
1116         iwl3945_rx_init(priv, rxq);
1117
1118
1119         /* Look at using this instead:
1120         rxq->need_update = 1;
1121         iwl_rx_queue_update_write_ptr(priv, rxq);
1122         */
1123
1124         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1125
1126         rc = iwl3945_txq_ctx_reset(priv);
1127         if (rc)
1128                 return rc;
1129
1130         set_bit(STATUS_INIT, &priv->status);
1131
1132         return 0;
1133 }
1134
1135 /**
1136  * iwl3945_hw_txq_ctx_free - Free TXQ Context
1137  *
1138  * Destroy all TX DMA queues and structures
1139  */
1140 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1141 {
1142         int txq_id;
1143
1144         /* Tx queues */
1145         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
1146                 if (txq_id == IWL_CMD_QUEUE_NUM)
1147                         iwl_cmd_queue_free(priv);
1148                 else
1149                         iwl_tx_queue_free(priv, txq_id);
1150
1151 }
1152
1153 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1154 {
1155         int txq_id;
1156
1157         /* stop SCD */
1158         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1159
1160         /* reset TFD queues */
1161         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
1162                 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1163                 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1164                                 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1165                                 1000);
1166         }
1167
1168         iwl3945_hw_txq_ctx_free(priv);
1169 }
1170
1171 static int iwl3945_apm_stop_master(struct iwl_priv *priv)
1172 {
1173         int ret = 0;
1174         unsigned long flags;
1175
1176         spin_lock_irqsave(&priv->lock, flags);
1177
1178         /* set stop master bit */
1179         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1180
1181         iwl_poll_direct_bit(priv, CSR_RESET,
1182                             CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1183
1184         if (ret < 0)
1185                 goto out;
1186
1187 out:
1188         spin_unlock_irqrestore(&priv->lock, flags);
1189         IWL_DEBUG_INFO(priv, "stop master\n");
1190
1191         return ret;
1192 }
1193
1194 static void iwl3945_apm_stop(struct iwl_priv *priv)
1195 {
1196         unsigned long flags;
1197
1198         iwl3945_apm_stop_master(priv);
1199
1200         spin_lock_irqsave(&priv->lock, flags);
1201
1202         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1203
1204         udelay(10);
1205         /* clear "init complete"  move adapter D0A* --> D0U state */
1206         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1207         spin_unlock_irqrestore(&priv->lock, flags);
1208 }
1209
1210 static int iwl3945_apm_reset(struct iwl_priv *priv)
1211 {
1212         iwl3945_apm_stop_master(priv);
1213
1214
1215         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1216         udelay(10);
1217
1218         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1219
1220         iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1221                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1222
1223         iwl_write_prph(priv, APMG_CLK_CTRL_REG,
1224                                 APMG_CLK_VAL_BSM_CLK_RQT);
1225
1226         iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
1227         iwl_write_prph(priv, APMG_RTC_INT_STT_REG,
1228                                         0xFFFFFFFF);
1229
1230         /* enable DMA */
1231         iwl_write_prph(priv, APMG_CLK_EN_REG,
1232                                 APMG_CLK_VAL_DMA_CLK_RQT |
1233                                 APMG_CLK_VAL_BSM_CLK_RQT);
1234         udelay(10);
1235
1236         iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
1237                                 APMG_PS_CTRL_VAL_RESET_REQ);
1238         udelay(5);
1239         iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
1240                                 APMG_PS_CTRL_VAL_RESET_REQ);
1241
1242         /* Clear the 'host command active' bit... */
1243         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1244
1245         wake_up_interruptible(&priv->wait_command_queue);
1246
1247         return 0;
1248 }
1249
1250 /**
1251  * iwl3945_hw_reg_adjust_power_by_temp
1252  * return index delta into power gain settings table
1253 */
1254 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1255 {
1256         return (new_reading - old_reading) * (-11) / 100;
1257 }
1258
1259 /**
1260  * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1261  */
1262 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1263 {
1264         return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1265 }
1266
1267 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1268 {
1269         return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1270 }
1271
1272 /**
1273  * iwl3945_hw_reg_txpower_get_temperature
1274  * get the current temperature by reading from NIC
1275 */
1276 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1277 {
1278         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1279         int temperature;
1280
1281         temperature = iwl3945_hw_get_temperature(priv);
1282
1283         /* driver's okay range is -260 to +25.
1284          *   human readable okay range is 0 to +285 */
1285         IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1286
1287         /* handle insane temp reading */
1288         if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1289                 IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
1290
1291                 /* if really really hot(?),
1292                  *   substitute the 3rd band/group's temp measured at factory */
1293                 if (priv->last_temperature > 100)
1294                         temperature = eeprom->groups[2].temperature;
1295                 else /* else use most recent "sane" value from driver */
1296                         temperature = priv->last_temperature;
1297         }
1298
1299         return temperature;     /* raw, not "human readable" */
1300 }
1301
1302 /* Adjust Txpower only if temperature variance is greater than threshold.
1303  *
1304  * Both are lower than older versions' 9 degrees */
1305 #define IWL_TEMPERATURE_LIMIT_TIMER   6
1306
1307 /**
1308  * is_temp_calib_needed - determines if new calibration is needed
1309  *
1310  * records new temperature in tx_mgr->temperature.
1311  * replaces tx_mgr->last_temperature *only* if calib needed
1312  *    (assumes caller will actually do the calibration!). */
1313 static int is_temp_calib_needed(struct iwl_priv *priv)
1314 {
1315         int temp_diff;
1316
1317         priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1318         temp_diff = priv->temperature - priv->last_temperature;
1319
1320         /* get absolute value */
1321         if (temp_diff < 0) {
1322                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1323                 temp_diff = -temp_diff;
1324         } else if (temp_diff == 0)
1325                 IWL_DEBUG_POWER(priv, "Same temp,\n");
1326         else
1327                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1328
1329         /* if we don't need calibration, *don't* update last_temperature */
1330         if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1331                 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1332                 return 0;
1333         }
1334
1335         IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1336
1337         /* assume that caller will actually do calib ...
1338          *   update the "last temperature" value */
1339         priv->last_temperature = priv->temperature;
1340         return 1;
1341 }
1342
1343 #define IWL_MAX_GAIN_ENTRIES 78
1344 #define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
1345 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1346
1347 /* radio and DSP power table, each step is 1/2 dB.
1348  * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1349 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1350         {
1351          {251, 127},            /* 2.4 GHz, highest power */
1352          {251, 127},
1353          {251, 127},
1354          {251, 127},
1355          {251, 125},
1356          {251, 110},
1357          {251, 105},
1358          {251, 98},
1359          {187, 125},
1360          {187, 115},
1361          {187, 108},
1362          {187, 99},
1363          {243, 119},
1364          {243, 111},
1365          {243, 105},
1366          {243, 97},
1367          {243, 92},
1368          {211, 106},
1369          {211, 100},
1370          {179, 120},
1371          {179, 113},
1372          {179, 107},
1373          {147, 125},
1374          {147, 119},
1375          {147, 112},
1376          {147, 106},
1377          {147, 101},
1378          {147, 97},
1379          {147, 91},
1380          {115, 107},
1381          {235, 121},
1382          {235, 115},
1383          {235, 109},
1384          {203, 127},
1385          {203, 121},
1386          {203, 115},
1387          {203, 108},
1388          {203, 102},
1389          {203, 96},
1390          {203, 92},
1391          {171, 110},
1392          {171, 104},
1393          {171, 98},
1394          {139, 116},
1395          {227, 125},
1396          {227, 119},
1397          {227, 113},
1398          {227, 107},
1399          {227, 101},
1400          {227, 96},
1401          {195, 113},
1402          {195, 106},
1403          {195, 102},
1404          {195, 95},
1405          {163, 113},
1406          {163, 106},
1407          {163, 102},
1408          {163, 95},
1409          {131, 113},
1410          {131, 106},
1411          {131, 102},
1412          {131, 95},
1413          {99, 113},
1414          {99, 106},
1415          {99, 102},
1416          {99, 95},
1417          {67, 113},
1418          {67, 106},
1419          {67, 102},
1420          {67, 95},
1421          {35, 113},
1422          {35, 106},
1423          {35, 102},
1424          {35, 95},
1425          {3, 113},
1426          {3, 106},
1427          {3, 102},
1428          {3, 95} },             /* 2.4 GHz, lowest power */
1429         {
1430          {251, 127},            /* 5.x GHz, highest power */
1431          {251, 120},
1432          {251, 114},
1433          {219, 119},
1434          {219, 101},
1435          {187, 113},
1436          {187, 102},
1437          {155, 114},
1438          {155, 103},
1439          {123, 117},
1440          {123, 107},
1441          {123, 99},
1442          {123, 92},
1443          {91, 108},
1444          {59, 125},
1445          {59, 118},
1446          {59, 109},
1447          {59, 102},
1448          {59, 96},
1449          {59, 90},
1450          {27, 104},
1451          {27, 98},
1452          {27, 92},
1453          {115, 118},
1454          {115, 111},
1455          {115, 104},
1456          {83, 126},
1457          {83, 121},
1458          {83, 113},
1459          {83, 105},
1460          {83, 99},
1461          {51, 118},
1462          {51, 111},
1463          {51, 104},
1464          {51, 98},
1465          {19, 116},
1466          {19, 109},
1467          {19, 102},
1468          {19, 98},
1469          {19, 93},
1470          {171, 113},
1471          {171, 107},
1472          {171, 99},
1473          {139, 120},
1474          {139, 113},
1475          {139, 107},
1476          {139, 99},
1477          {107, 120},
1478          {107, 113},
1479          {107, 107},
1480          {107, 99},
1481          {75, 120},
1482          {75, 113},
1483          {75, 107},
1484          {75, 99},
1485          {43, 120},
1486          {43, 113},
1487          {43, 107},
1488          {43, 99},
1489          {11, 120},
1490          {11, 113},
1491          {11, 107},
1492          {11, 99},
1493          {131, 107},
1494          {131, 99},
1495          {99, 120},
1496          {99, 113},
1497          {99, 107},
1498          {99, 99},
1499          {67, 120},
1500          {67, 113},
1501          {67, 107},
1502          {67, 99},
1503          {35, 120},
1504          {35, 113},
1505          {35, 107},
1506          {35, 99},
1507          {3, 120} }             /* 5.x GHz, lowest power */
1508 };
1509
1510 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1511 {
1512         if (index < 0)
1513                 return 0;
1514         if (index >= IWL_MAX_GAIN_ENTRIES)
1515                 return IWL_MAX_GAIN_ENTRIES - 1;
1516         return (u8) index;
1517 }
1518
1519 /* Kick off thermal recalibration check every 60 seconds */
1520 #define REG_RECALIB_PERIOD (60)
1521
1522 /**
1523  * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1524  *
1525  * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1526  * or 6 Mbit (OFDM) rates.
1527  */
1528 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1529                                s32 rate_index, const s8 *clip_pwrs,
1530                                struct iwl_channel_info *ch_info,
1531                                int band_index)
1532 {
1533         struct iwl3945_scan_power_info *scan_power_info;
1534         s8 power;
1535         u8 power_index;
1536
1537         scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1538
1539         /* use this channel group's 6Mbit clipping/saturation pwr,
1540          *   but cap at regulatory scan power restriction (set during init
1541          *   based on eeprom channel data) for this channel.  */
1542         power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1543
1544         /* further limit to user's max power preference.
1545          * FIXME:  Other spectrum management power limitations do not
1546          *   seem to apply?? */
1547         power = min(power, priv->tx_power_user_lmt);
1548         scan_power_info->requested_power = power;
1549
1550         /* find difference between new scan *power* and current "normal"
1551          *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
1552          *   current "normal" temperature-compensated Tx power *index* for
1553          *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1554          *   *index*. */
1555         power_index = ch_info->power_info[rate_index].power_table_index
1556             - (power - ch_info->power_info
1557                [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1558
1559         /* store reference index that we use when adjusting *all* scan
1560          *   powers.  So we can accommodate user (all channel) or spectrum
1561          *   management (single channel) power changes "between" temperature
1562          *   feedback compensation procedures.
1563          * don't force fit this reference index into gain table; it may be a
1564          *   negative number.  This will help avoid errors when we're at
1565          *   the lower bounds (highest gains, for warmest temperatures)
1566          *   of the table. */
1567
1568         /* don't exceed table bounds for "real" setting */
1569         power_index = iwl3945_hw_reg_fix_power_index(power_index);
1570
1571         scan_power_info->power_table_index = power_index;
1572         scan_power_info->tpc.tx_gain =
1573             power_gain_table[band_index][power_index].tx_gain;
1574         scan_power_info->tpc.dsp_atten =
1575             power_gain_table[band_index][power_index].dsp_atten;
1576 }
1577
1578 /**
1579  * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1580  *
1581  * Configures power settings for all rates for the current channel,
1582  * using values from channel info struct, and send to NIC
1583  */
1584 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1585 {
1586         int rate_idx, i;
1587         const struct iwl_channel_info *ch_info = NULL;
1588         struct iwl3945_txpowertable_cmd txpower = {
1589                 .channel = priv->active_rxon.channel,
1590         };
1591
1592         txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1593         ch_info = iwl_get_channel_info(priv,
1594                                        priv->band,
1595                                        le16_to_cpu(priv->active_rxon.channel));
1596         if (!ch_info) {
1597                 IWL_ERR(priv,
1598                         "Failed to get channel info for channel %d [%d]\n",
1599                         le16_to_cpu(priv->active_rxon.channel), priv->band);
1600                 return -EINVAL;
1601         }
1602
1603         if (!is_channel_valid(ch_info)) {
1604                 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1605                                 "non-Tx channel.\n");
1606                 return 0;
1607         }
1608
1609         /* fill cmd with power settings for all rates for current channel */
1610         /* Fill OFDM rate */
1611         for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1612              rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1613
1614                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1615                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1616
1617                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1618                                 le16_to_cpu(txpower.channel),
1619                                 txpower.band,
1620                                 txpower.power[i].tpc.tx_gain,
1621                                 txpower.power[i].tpc.dsp_atten,
1622                                 txpower.power[i].rate);
1623         }
1624         /* Fill CCK rates */
1625         for (rate_idx = IWL_FIRST_CCK_RATE;
1626              rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1627                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1628                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1629
1630                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1631                                 le16_to_cpu(txpower.channel),
1632                                 txpower.band,
1633                                 txpower.power[i].tpc.tx_gain,
1634                                 txpower.power[i].tpc.dsp_atten,
1635                                 txpower.power[i].rate);
1636         }
1637
1638         return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1639                                 sizeof(struct iwl3945_txpowertable_cmd),
1640                                 &txpower);
1641
1642 }
1643
1644 /**
1645  * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1646  * @ch_info: Channel to update.  Uses power_info.requested_power.
1647  *
1648  * Replace requested_power and base_power_index ch_info fields for
1649  * one channel.
1650  *
1651  * Called if user or spectrum management changes power preferences.
1652  * Takes into account h/w and modulation limitations (clip power).
1653  *
1654  * This does *not* send anything to NIC, just sets up ch_info for one channel.
1655  *
1656  * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1657  *       properly fill out the scan powers, and actual h/w gain settings,
1658  *       and send changes to NIC
1659  */
1660 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1661                              struct iwl_channel_info *ch_info)
1662 {
1663         struct iwl3945_channel_power_info *power_info;
1664         int power_changed = 0;
1665         int i;
1666         const s8 *clip_pwrs;
1667         int power;
1668
1669         /* Get this chnlgrp's rate-to-max/clip-powers table */
1670         clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1671
1672         /* Get this channel's rate-to-current-power settings table */
1673         power_info = ch_info->power_info;
1674
1675         /* update OFDM Txpower settings */
1676         for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1677              i++, ++power_info) {
1678                 int delta_idx;
1679
1680                 /* limit new power to be no more than h/w capability */
1681                 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1682                 if (power == power_info->requested_power)
1683                         continue;
1684
1685                 /* find difference between old and new requested powers,
1686                  *    update base (non-temp-compensated) power index */
1687                 delta_idx = (power - power_info->requested_power) * 2;
1688                 power_info->base_power_index -= delta_idx;
1689
1690                 /* save new requested power value */
1691                 power_info->requested_power = power;
1692
1693                 power_changed = 1;
1694         }
1695
1696         /* update CCK Txpower settings, based on OFDM 12M setting ...
1697          *    ... all CCK power settings for a given channel are the *same*. */
1698         if (power_changed) {
1699                 power =
1700                     ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1701                     requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1702
1703                 /* do all CCK rates' iwl3945_channel_power_info structures */
1704                 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1705                         power_info->requested_power = power;
1706                         power_info->base_power_index =
1707                             ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1708                             base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1709                         ++power_info;
1710                 }
1711         }
1712
1713         return 0;
1714 }
1715
1716 /**
1717  * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1718  *
1719  * NOTE: Returned power limit may be less (but not more) than requested,
1720  *       based strictly on regulatory (eeprom and spectrum mgt) limitations
1721  *       (no consideration for h/w clipping limitations).
1722  */
1723 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1724 {
1725         s8 max_power;
1726
1727 #if 0
1728         /* if we're using TGd limits, use lower of TGd or EEPROM */
1729         if (ch_info->tgd_data.max_power != 0)
1730                 max_power = min(ch_info->tgd_data.max_power,
1731                                 ch_info->eeprom.max_power_avg);
1732
1733         /* else just use EEPROM limits */
1734         else
1735 #endif
1736                 max_power = ch_info->eeprom.max_power_avg;
1737
1738         return min(max_power, ch_info->max_power_avg);
1739 }
1740
1741 /**
1742  * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1743  *
1744  * Compensate txpower settings of *all* channels for temperature.
1745  * This only accounts for the difference between current temperature
1746  *   and the factory calibration temperatures, and bases the new settings
1747  *   on the channel's base_power_index.
1748  *
1749  * If RxOn is "associated", this sends the new Txpower to NIC!
1750  */
1751 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1752 {
1753         struct iwl_channel_info *ch_info = NULL;
1754         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1755         int delta_index;
1756         const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1757         u8 a_band;
1758         u8 rate_index;
1759         u8 scan_tbl_index;
1760         u8 i;
1761         int ref_temp;
1762         int temperature = priv->temperature;
1763
1764         /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1765         for (i = 0; i < priv->channel_count; i++) {
1766                 ch_info = &priv->channel_info[i];
1767                 a_band = is_channel_a_band(ch_info);
1768
1769                 /* Get this chnlgrp's factory calibration temperature */
1770                 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1771                     temperature;
1772
1773                 /* get power index adjustment based on current and factory
1774                  * temps */
1775                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1776                                                               ref_temp);
1777
1778                 /* set tx power value for all rates, OFDM and CCK */
1779                 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1780                      rate_index++) {
1781                         int power_idx =
1782                             ch_info->power_info[rate_index].base_power_index;
1783
1784                         /* temperature compensate */
1785                         power_idx += delta_index;
1786
1787                         /* stay within table range */
1788                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1789                         ch_info->power_info[rate_index].
1790                             power_table_index = (u8) power_idx;
1791                         ch_info->power_info[rate_index].tpc =
1792                             power_gain_table[a_band][power_idx];
1793                 }
1794
1795                 /* Get this chnlgrp's rate-to-max/clip-powers table */
1796                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1797
1798                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1799                 for (scan_tbl_index = 0;
1800                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1801                         s32 actual_index = (scan_tbl_index == 0) ?
1802                             IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1803                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1804                                            actual_index, clip_pwrs,
1805                                            ch_info, a_band);
1806                 }
1807         }
1808
1809         /* send Txpower command for current channel to ucode */
1810         return priv->cfg->ops->lib->send_tx_power(priv);
1811 }
1812
1813 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1814 {
1815         struct iwl_channel_info *ch_info;
1816         s8 max_power;
1817         u8 a_band;
1818         u8 i;
1819
1820         if (priv->tx_power_user_lmt == power) {
1821                 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1822                                 "limit: %ddBm.\n", power);
1823                 return 0;
1824         }
1825
1826         IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1827         priv->tx_power_user_lmt = power;
1828
1829         /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1830
1831         for (i = 0; i < priv->channel_count; i++) {
1832                 ch_info = &priv->channel_info[i];
1833                 a_band = is_channel_a_band(ch_info);
1834
1835                 /* find minimum power of all user and regulatory constraints
1836                  *    (does not consider h/w clipping limitations) */
1837                 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1838                 max_power = min(power, max_power);
1839                 if (max_power != ch_info->curr_txpow) {
1840                         ch_info->curr_txpow = max_power;
1841
1842                         /* this considers the h/w clipping limitations */
1843                         iwl3945_hw_reg_set_new_power(priv, ch_info);
1844                 }
1845         }
1846
1847         /* update txpower settings for all channels,
1848          *   send to NIC if associated. */
1849         is_temp_calib_needed(priv);
1850         iwl3945_hw_reg_comp_txpower_temp(priv);
1851
1852         return 0;
1853 }
1854
1855 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
1856 {
1857         int rc = 0;
1858         struct iwl_rx_packet *res = NULL;
1859         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1860         struct iwl_host_cmd cmd = {
1861                 .id = REPLY_RXON_ASSOC,
1862                 .len = sizeof(rxon_assoc),
1863                 .flags = CMD_WANT_SKB,
1864                 .data = &rxon_assoc,
1865         };
1866         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1867         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1868
1869         if ((rxon1->flags == rxon2->flags) &&
1870             (rxon1->filter_flags == rxon2->filter_flags) &&
1871             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1872             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1873                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1874                 return 0;
1875         }
1876
1877         rxon_assoc.flags = priv->staging_rxon.flags;
1878         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1879         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1880         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1881         rxon_assoc.reserved = 0;
1882
1883         rc = iwl_send_cmd_sync(priv, &cmd);
1884         if (rc)
1885                 return rc;
1886
1887         res = (struct iwl_rx_packet *)cmd.reply_skb->data;
1888         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1889                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
1890                 rc = -EIO;
1891         }
1892
1893         priv->alloc_rxb_skb--;
1894         dev_kfree_skb_any(cmd.reply_skb);
1895
1896         return rc;
1897 }
1898
1899 /**
1900  * iwl3945_commit_rxon - commit staging_rxon to hardware
1901  *
1902  * The RXON command in staging_rxon is committed to the hardware and
1903  * the active_rxon structure is updated with the new data.  This
1904  * function correctly transitions out of the RXON_ASSOC_MSK state if
1905  * a HW tune is required based on the RXON structure changes.
1906  */
1907 static int iwl3945_commit_rxon(struct iwl_priv *priv)
1908 {
1909         /* cast away the const for active_rxon in this function */
1910         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1911         struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
1912         int rc = 0;
1913         bool new_assoc =
1914                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
1915
1916         if (!iwl_is_alive(priv))
1917                 return -1;
1918
1919         /* always get timestamp with Rx frame */
1920         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1921
1922         /* select antenna */
1923         staging_rxon->flags &=
1924             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1925         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
1926
1927         rc = iwl_check_rxon_cmd(priv);
1928         if (rc) {
1929                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
1930                 return -EINVAL;
1931         }
1932
1933         /* If we don't need to send a full RXON, we can use
1934          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1935          * and other flags for the current radio configuration. */
1936         if (!iwl_full_rxon_required(priv)) {
1937                 rc = iwl_send_rxon_assoc(priv);
1938                 if (rc) {
1939                         IWL_ERR(priv, "Error setting RXON_ASSOC "
1940                                   "configuration (%d).\n", rc);
1941                         return rc;
1942                 }
1943
1944                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1945
1946                 return 0;
1947         }
1948
1949         /* If we are currently associated and the new config requires
1950          * an RXON_ASSOC and the new config wants the associated mask enabled,
1951          * we must clear the associated from the active configuration
1952          * before we apply the new config */
1953         if (iwl_is_associated(priv) && new_assoc) {
1954                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
1955                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1956
1957                 /*
1958                  * reserved4 and 5 could have been filled by the iwlcore code.
1959                  * Let's clear them before pushing to the 3945.
1960                  */
1961                 active_rxon->reserved4 = 0;
1962                 active_rxon->reserved5 = 0;
1963                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1964                                       sizeof(struct iwl3945_rxon_cmd),
1965                                       &priv->active_rxon);
1966
1967                 /* If the mask clearing failed then we set
1968                  * active_rxon back to what it was previously */
1969                 if (rc) {
1970                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1971                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
1972                                   "configuration (%d).\n", rc);
1973                         return rc;
1974                 }
1975         }
1976
1977         IWL_DEBUG_INFO(priv, "Sending RXON\n"
1978                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1979                        "* channel = %d\n"
1980                        "* bssid = %pM\n",
1981                        (new_assoc ? "" : "out"),
1982                        le16_to_cpu(staging_rxon->channel),
1983                        staging_rxon->bssid_addr);
1984
1985         /*
1986          * reserved4 and 5 could have been filled by the iwlcore code.
1987          * Let's clear them before pushing to the 3945.
1988          */
1989         staging_rxon->reserved4 = 0;
1990         staging_rxon->reserved5 = 0;
1991
1992         iwl_set_rxon_hwcrypto(priv, !iwl3945_mod_params.sw_crypto);
1993
1994         /* Apply the new configuration */
1995         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1996                               sizeof(struct iwl3945_rxon_cmd),
1997                               staging_rxon);
1998         if (rc) {
1999                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
2000                 return rc;
2001         }
2002
2003         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
2004
2005         iwl_clear_stations_table(priv);
2006
2007         /* If we issue a new RXON command which required a tune then we must
2008          * send a new TXPOWER command or we won't be able to Tx any frames */
2009         rc = priv->cfg->ops->lib->send_tx_power(priv);
2010         if (rc) {
2011                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
2012                 return rc;
2013         }
2014
2015         /* Add the broadcast address so we can send broadcast frames */
2016         if (iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL) ==
2017             IWL_INVALID_STATION) {
2018                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
2019                 return -EIO;
2020         }
2021
2022         /* If we have set the ASSOC_MSK and we are in BSS mode then
2023          * add the IWL_AP_ID to the station rate table */
2024         if (iwl_is_associated(priv) &&
2025             (priv->iw_mode == NL80211_IFTYPE_STATION))
2026                 if (iwl_add_station(priv, priv->active_rxon.bssid_addr,
2027                                 true, CMD_SYNC, NULL) == IWL_INVALID_STATION) {
2028                         IWL_ERR(priv, "Error adding AP address for transmit\n");
2029                         return -EIO;
2030                 }
2031
2032         /* Init the hardware's rate fallback order based on the band */
2033         rc = iwl3945_init_hw_rate_table(priv);
2034         if (rc) {
2035                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
2036                 return -EIO;
2037         }
2038
2039         return 0;
2040 }
2041
2042 /* will add 3945 channel switch cmd handling later */
2043 int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel)
2044 {
2045         return 0;
2046 }
2047
2048 /**
2049  * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
2050  *
2051  * -- reset periodic timer
2052  * -- see if temp has changed enough to warrant re-calibration ... if so:
2053  *     -- correct coeffs for temp (can reset temp timer)
2054  *     -- save this temp as "last",
2055  *     -- send new set of gain settings to NIC
2056  * NOTE:  This should continue working, even when we're not associated,
2057  *   so we can keep our internal table of scan powers current. */
2058 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
2059 {
2060         /* This will kick in the "brute force"
2061          * iwl3945_hw_reg_comp_txpower_temp() below */
2062         if (!is_temp_calib_needed(priv))
2063                 goto reschedule;
2064
2065         /* Set up a new set of temp-adjusted TxPowers, send to NIC.
2066          * This is based *only* on current temperature,
2067          * ignoring any previous power measurements */
2068         iwl3945_hw_reg_comp_txpower_temp(priv);
2069
2070  reschedule:
2071         queue_delayed_work(priv->workqueue,
2072                            &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
2073 }
2074
2075 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
2076 {
2077         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2078                                              thermal_periodic.work);
2079
2080         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2081                 return;
2082
2083         mutex_lock(&priv->mutex);
2084         iwl3945_reg_txpower_periodic(priv);
2085         mutex_unlock(&priv->mutex);
2086 }
2087
2088 /**
2089  * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2090  *                                 for the channel.
2091  *
2092  * This function is used when initializing channel-info structs.
2093  *
2094  * NOTE: These channel groups do *NOT* match the bands above!
2095  *       These channel groups are based on factory-tested channels;
2096  *       on A-band, EEPROM's "group frequency" entries represent the top
2097  *       channel in each group 1-4.  Group 5 All B/G channels are in group 0.
2098  */
2099 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
2100                                        const struct iwl_channel_info *ch_info)
2101 {
2102         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2103         struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
2104         u8 group;
2105         u16 group_index = 0;    /* based on factory calib frequencies */
2106         u8 grp_channel;
2107
2108         /* Find the group index for the channel ... don't use index 1(?) */
2109         if (is_channel_a_band(ch_info)) {
2110                 for (group = 1; group < 5; group++) {
2111                         grp_channel = ch_grp[group].group_channel;
2112                         if (ch_info->channel <= grp_channel) {
2113                                 group_index = group;
2114                                 break;
2115                         }
2116                 }
2117                 /* group 4 has a few channels *above* its factory cal freq */
2118                 if (group == 5)
2119                         group_index = 4;
2120         } else
2121                 group_index = 0;        /* 2.4 GHz, group 0 */
2122
2123         IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
2124                         group_index);
2125         return group_index;
2126 }
2127
2128 /**
2129  * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2130  *
2131  * Interpolate to get nominal (i.e. at factory calibration temperature) index
2132  *   into radio/DSP gain settings table for requested power.
2133  */
2134 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
2135                                        s8 requested_power,
2136                                        s32 setting_index, s32 *new_index)
2137 {
2138         const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2139         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2140         s32 index0, index1;
2141         s32 power = 2 * requested_power;
2142         s32 i;
2143         const struct iwl3945_eeprom_txpower_sample *samples;
2144         s32 gains0, gains1;
2145         s32 res;
2146         s32 denominator;
2147
2148         chnl_grp = &eeprom->groups[setting_index];
2149         samples = chnl_grp->samples;
2150         for (i = 0; i < 5; i++) {
2151                 if (power == samples[i].power) {
2152                         *new_index = samples[i].gain_index;
2153                         return 0;
2154                 }
2155         }
2156
2157         if (power > samples[1].power) {
2158                 index0 = 0;
2159                 index1 = 1;
2160         } else if (power > samples[2].power) {
2161                 index0 = 1;
2162                 index1 = 2;
2163         } else if (power > samples[3].power) {
2164                 index0 = 2;
2165                 index1 = 3;
2166         } else {
2167                 index0 = 3;
2168                 index1 = 4;
2169         }
2170
2171         denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2172         if (denominator == 0)
2173                 return -EINVAL;
2174         gains0 = (s32) samples[index0].gain_index * (1 << 19);
2175         gains1 = (s32) samples[index1].gain_index * (1 << 19);
2176         res = gains0 + (gains1 - gains0) *
2177             ((s32) power - (s32) samples[index0].power) / denominator +
2178             (1 << 18);
2179         *new_index = res >> 19;
2180         return 0;
2181 }
2182
2183 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2184 {
2185         u32 i;
2186         s32 rate_index;
2187         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2188         const struct iwl3945_eeprom_txpower_group *group;
2189
2190         IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
2191
2192         for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2193                 s8 *clip_pwrs;  /* table of power levels for each rate */
2194                 s8 satur_pwr;   /* saturation power for each chnl group */
2195                 group = &eeprom->groups[i];
2196
2197                 /* sanity check on factory saturation power value */
2198                 if (group->saturation_power < 40) {
2199                         IWL_WARN(priv, "Error: saturation power is %d, "
2200                                     "less than minimum expected 40\n",
2201                                     group->saturation_power);
2202                         return;
2203                 }
2204
2205                 /*
2206                  * Derive requested power levels for each rate, based on
2207                  *   hardware capabilities (saturation power for band).
2208                  * Basic value is 3dB down from saturation, with further
2209                  *   power reductions for highest 3 data rates.  These
2210                  *   backoffs provide headroom for high rate modulation
2211                  *   power peaks, without too much distortion (clipping).
2212                  */
2213                 /* we'll fill in this array with h/w max power levels */
2214                 clip_pwrs = (s8 *) priv->clip39_groups[i].clip_powers;
2215
2216                 /* divide factory saturation power by 2 to find -3dB level */
2217                 satur_pwr = (s8) (group->saturation_power >> 1);
2218
2219                 /* fill in channel group's nominal powers for each rate */
2220                 for (rate_index = 0;
2221                      rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
2222                         switch (rate_index) {
2223                         case IWL_RATE_36M_INDEX_TABLE:
2224                                 if (i == 0)     /* B/G */
2225                                         *clip_pwrs = satur_pwr;
2226                                 else    /* A */
2227                                         *clip_pwrs = satur_pwr - 5;
2228                                 break;
2229                         case IWL_RATE_48M_INDEX_TABLE:
2230                                 if (i == 0)
2231                                         *clip_pwrs = satur_pwr - 7;
2232                                 else
2233                                         *clip_pwrs = satur_pwr - 10;
2234                                 break;
2235                         case IWL_RATE_54M_INDEX_TABLE:
2236                                 if (i == 0)
2237                                         *clip_pwrs = satur_pwr - 9;
2238                                 else
2239                                         *clip_pwrs = satur_pwr - 12;
2240                                 break;
2241                         default:
2242                                 *clip_pwrs = satur_pwr;
2243                                 break;
2244                         }
2245                 }
2246         }
2247 }
2248
2249 /**
2250  * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2251  *
2252  * Second pass (during init) to set up priv->channel_info
2253  *
2254  * Set up Tx-power settings in our channel info database for each VALID
2255  * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2256  * and current temperature.
2257  *
2258  * Since this is based on current temperature (at init time), these values may
2259  * not be valid for very long, but it gives us a starting/default point,
2260  * and allows us to active (i.e. using Tx) scan.
2261  *
2262  * This does *not* write values to NIC, just sets up our internal table.
2263  */
2264 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2265 {
2266         struct iwl_channel_info *ch_info = NULL;
2267         struct iwl3945_channel_power_info *pwr_info;
2268         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2269         int delta_index;
2270         u8 rate_index;
2271         u8 scan_tbl_index;
2272         const s8 *clip_pwrs;    /* array of power levels for each rate */
2273         u8 gain, dsp_atten;
2274         s8 power;
2275         u8 pwr_index, base_pwr_index, a_band;
2276         u8 i;
2277         int temperature;
2278
2279         /* save temperature reference,
2280          *   so we can determine next time to calibrate */
2281         temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2282         priv->last_temperature = temperature;
2283
2284         iwl3945_hw_reg_init_channel_groups(priv);
2285
2286         /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2287         for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2288              i++, ch_info++) {
2289                 a_band = is_channel_a_band(ch_info);
2290                 if (!is_channel_valid(ch_info))
2291                         continue;
2292
2293                 /* find this channel's channel group (*not* "band") index */
2294                 ch_info->group_index =
2295                         iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2296
2297                 /* Get this chnlgrp's rate->max/clip-powers table */
2298                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
2299
2300                 /* calculate power index *adjustment* value according to
2301                  *  diff between current temperature and factory temperature */
2302                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2303                                 eeprom->groups[ch_info->group_index].
2304                                 temperature);
2305
2306                 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2307                                 ch_info->channel, delta_index, temperature +
2308                                 IWL_TEMP_CONVERT);
2309
2310                 /* set tx power value for all OFDM rates */
2311                 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2312                      rate_index++) {
2313                         s32 uninitialized_var(power_idx);
2314                         int rc;
2315
2316                         /* use channel group's clip-power table,
2317                          *   but don't exceed channel's max power */
2318                         s8 pwr = min(ch_info->max_power_avg,
2319                                      clip_pwrs[rate_index]);
2320
2321                         pwr_info = &ch_info->power_info[rate_index];
2322
2323                         /* get base (i.e. at factory-measured temperature)
2324                          *    power table index for this rate's power */
2325                         rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2326                                                          ch_info->group_index,
2327                                                          &power_idx);
2328                         if (rc) {
2329                                 IWL_ERR(priv, "Invalid power index\n");
2330                                 return rc;
2331                         }
2332                         pwr_info->base_power_index = (u8) power_idx;
2333
2334                         /* temperature compensate */
2335                         power_idx += delta_index;
2336
2337                         /* stay within range of gain table */
2338                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2339
2340                         /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2341                         pwr_info->requested_power = pwr;
2342                         pwr_info->power_table_index = (u8) power_idx;
2343                         pwr_info->tpc.tx_gain =
2344                             power_gain_table[a_band][power_idx].tx_gain;
2345                         pwr_info->tpc.dsp_atten =
2346                             power_gain_table[a_band][power_idx].dsp_atten;
2347                 }
2348
2349                 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2350                 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2351                 power = pwr_info->requested_power +
2352                         IWL_CCK_FROM_OFDM_POWER_DIFF;
2353                 pwr_index = pwr_info->power_table_index +
2354                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2355                 base_pwr_index = pwr_info->base_power_index +
2356                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2357
2358                 /* stay within table range */
2359                 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2360                 gain = power_gain_table[a_band][pwr_index].tx_gain;
2361                 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2362
2363                 /* fill each CCK rate's iwl3945_channel_power_info structure
2364                  * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
2365                  * NOTE:  CCK rates start at end of OFDM rates! */
2366                 for (rate_index = 0;
2367                      rate_index < IWL_CCK_RATES; rate_index++) {
2368                         pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2369                         pwr_info->requested_power = power;
2370                         pwr_info->power_table_index = pwr_index;
2371                         pwr_info->base_power_index = base_pwr_index;
2372                         pwr_info->tpc.tx_gain = gain;
2373                         pwr_info->tpc.dsp_atten = dsp_atten;
2374                 }
2375
2376                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2377                 for (scan_tbl_index = 0;
2378                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2379                         s32 actual_index = (scan_tbl_index == 0) ?
2380                                 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2381                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2382                                 actual_index, clip_pwrs, ch_info, a_band);
2383                 }
2384         }
2385
2386         return 0;
2387 }
2388
2389 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2390 {
2391         int rc;
2392
2393         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2394         rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2395                         FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2396         if (rc < 0)
2397                 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2398
2399         return 0;
2400 }
2401
2402 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2403 {
2404         int txq_id = txq->q.id;
2405
2406         struct iwl3945_shared *shared_data = priv->shared_virt;
2407
2408         shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2409
2410         iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2411         iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2412
2413         iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2414                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2415                 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2416                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2417                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2418                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2419
2420         /* fake read to flush all prev. writes */
2421         iwl_read32(priv, FH39_TSSR_CBB_BASE);
2422
2423         return 0;
2424 }
2425
2426 /*
2427  * HCMD utils
2428  */
2429 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2430 {
2431         switch (cmd_id) {
2432         case REPLY_RXON:
2433                 return sizeof(struct iwl3945_rxon_cmd);
2434         case POWER_TABLE_CMD:
2435                 return sizeof(struct iwl3945_powertable_cmd);
2436         default:
2437                 return len;
2438         }
2439 }
2440
2441
2442 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2443 {
2444         struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
2445         addsta->mode = cmd->mode;
2446         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
2447         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
2448         addsta->station_flags = cmd->station_flags;
2449         addsta->station_flags_msk = cmd->station_flags_msk;
2450         addsta->tid_disable_tx = cpu_to_le16(0);
2451         addsta->rate_n_flags = cmd->rate_n_flags;
2452         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2453         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2454         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2455
2456         return (u16)sizeof(struct iwl3945_addsta_cmd);
2457 }
2458
2459
2460 /**
2461  * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2462  */
2463 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2464 {
2465         int rc, i, index, prev_index;
2466         struct iwl3945_rate_scaling_cmd rate_cmd = {
2467                 .reserved = {0, 0, 0},
2468         };
2469         struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2470
2471         for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2472                 index = iwl3945_rates[i].table_rs_index;
2473
2474                 table[index].rate_n_flags =
2475                         iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2476                 table[index].try_cnt = priv->retry_rate;
2477                 prev_index = iwl3945_get_prev_ieee_rate(i);
2478                 table[index].next_rate_index =
2479                                 iwl3945_rates[prev_index].table_rs_index;
2480         }
2481
2482         switch (priv->band) {
2483         case IEEE80211_BAND_5GHZ:
2484                 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2485                 /* If one of the following CCK rates is used,
2486                  * have it fall back to the 6M OFDM rate */
2487                 for (i = IWL_RATE_1M_INDEX_TABLE;
2488                         i <= IWL_RATE_11M_INDEX_TABLE; i++)
2489                         table[i].next_rate_index =
2490                           iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2491
2492                 /* Don't fall back to CCK rates */
2493                 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2494                                                 IWL_RATE_9M_INDEX_TABLE;
2495
2496                 /* Don't drop out of OFDM rates */
2497                 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2498                     iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2499                 break;
2500
2501         case IEEE80211_BAND_2GHZ:
2502                 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2503                 /* If an OFDM rate is used, have it fall back to the
2504                  * 1M CCK rates */
2505
2506                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2507                     iwl_is_associated(priv)) {
2508
2509                         index = IWL_FIRST_CCK_RATE;
2510                         for (i = IWL_RATE_6M_INDEX_TABLE;
2511                              i <= IWL_RATE_54M_INDEX_TABLE; i++)
2512                                 table[i].next_rate_index =
2513                                         iwl3945_rates[index].table_rs_index;
2514
2515                         index = IWL_RATE_11M_INDEX_TABLE;
2516                         /* CCK shouldn't fall back to OFDM... */
2517                         table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2518                 }
2519                 break;
2520
2521         default:
2522                 WARN_ON(1);
2523                 break;
2524         }
2525
2526         /* Update the rate scaling for control frame Tx */
2527         rate_cmd.table_id = 0;
2528         rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2529                               &rate_cmd);
2530         if (rc)
2531                 return rc;
2532
2533         /* Update the rate scaling for data frame Tx */
2534         rate_cmd.table_id = 1;
2535         return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2536                                 &rate_cmd);
2537 }
2538
2539 /* Called when initializing driver */
2540 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2541 {
2542         memset((void *)&priv->hw_params, 0,
2543                sizeof(struct iwl_hw_params));
2544
2545         priv->shared_virt =
2546             pci_alloc_consistent(priv->pci_dev,
2547                                  sizeof(struct iwl3945_shared),
2548                                  &priv->shared_phys);
2549
2550         if (!priv->shared_virt) {
2551                 IWL_ERR(priv, "failed to allocate pci memory\n");
2552                 mutex_unlock(&priv->mutex);
2553                 return -ENOMEM;
2554         }
2555
2556         /* Assign number of Usable TX queues */
2557         priv->hw_params.max_txq_num = IWL39_NUM_QUEUES;
2558
2559         priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2560         priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_3K;
2561         priv->hw_params.max_pkt_size = 2342;
2562         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2563         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2564         priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2565         priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID;
2566
2567         priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2568         priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
2569
2570         return 0;
2571 }
2572
2573 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2574                           struct iwl3945_frame *frame, u8 rate)
2575 {
2576         struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2577         unsigned int frame_size;
2578
2579         tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2580         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2581
2582         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2583         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2584
2585         frame_size = iwl3945_fill_beacon_frame(priv,
2586                                 tx_beacon_cmd->frame,
2587                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2588
2589         BUG_ON(frame_size > MAX_MPDU_SIZE);
2590         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2591
2592         tx_beacon_cmd->tx.rate = rate;
2593         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2594                                       TX_CMD_FLG_TSF_MSK);
2595
2596         /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2597         tx_beacon_cmd->tx.supp_rates[0] =
2598                 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2599
2600         tx_beacon_cmd->tx.supp_rates[1] =
2601                 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2602
2603         return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2604 }
2605
2606 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2607 {
2608         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2609         priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2610 }
2611
2612 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2613 {
2614         INIT_DELAYED_WORK(&priv->thermal_periodic,
2615                           iwl3945_bg_reg_txpower_periodic);
2616 }
2617
2618 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2619 {
2620         cancel_delayed_work(&priv->thermal_periodic);
2621 }
2622
2623 /* check contents of special bootstrap uCode SRAM */
2624 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2625  {
2626         __le32 *image = priv->ucode_boot.v_addr;
2627         u32 len = priv->ucode_boot.len;
2628         u32 reg;
2629         u32 val;
2630
2631         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2632
2633         /* verify BSM SRAM contents */
2634         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2635         for (reg = BSM_SRAM_LOWER_BOUND;
2636              reg < BSM_SRAM_LOWER_BOUND + len;
2637              reg += sizeof(u32), image++) {
2638                 val = iwl_read_prph(priv, reg);
2639                 if (val != le32_to_cpu(*image)) {
2640                         IWL_ERR(priv, "BSM uCode verification failed at "
2641                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2642                                   BSM_SRAM_LOWER_BOUND,
2643                                   reg - BSM_SRAM_LOWER_BOUND, len,
2644                                   val, le32_to_cpu(*image));
2645                         return -EIO;
2646                 }
2647         }
2648
2649         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2650
2651         return 0;
2652 }
2653
2654
2655 /******************************************************************************
2656  *
2657  * EEPROM related functions
2658  *
2659  ******************************************************************************/
2660
2661 /*
2662  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2663  * embedded controller) as EEPROM reader; each read is a series of pulses
2664  * to/from the EEPROM chip, not a single event, so even reads could conflict
2665  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
2666  * simply claims ownership, which should be safe when this function is called
2667  * (i.e. before loading uCode!).
2668  */
2669 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2670 {
2671         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2672         return 0;
2673 }
2674
2675
2676 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2677 {
2678         return;
2679 }
2680
2681  /**
2682   * iwl3945_load_bsm - Load bootstrap instructions
2683   *
2684   * BSM operation:
2685   *
2686   * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2687   * in special SRAM that does not power down during RFKILL.  When powering back
2688   * up after power-saving sleeps (or during initial uCode load), the BSM loads
2689   * the bootstrap program into the on-board processor, and starts it.
2690   *
2691   * The bootstrap program loads (via DMA) instructions and data for a new
2692   * program from host DRAM locations indicated by the host driver in the
2693   * BSM_DRAM_* registers.  Once the new program is loaded, it starts
2694   * automatically.
2695   *
2696   * When initializing the NIC, the host driver points the BSM to the
2697   * "initialize" uCode image.  This uCode sets up some internal data, then
2698   * notifies host via "initialize alive" that it is complete.
2699   *
2700   * The host then replaces the BSM_DRAM_* pointer values to point to the
2701   * normal runtime uCode instructions and a backup uCode data cache buffer
2702   * (filled initially with starting data values for the on-board processor),
2703   * then triggers the "initialize" uCode to load and launch the runtime uCode,
2704   * which begins normal operation.
2705   *
2706   * When doing a power-save shutdown, runtime uCode saves data SRAM into
2707   * the backup data cache in DRAM before SRAM is powered down.
2708   *
2709   * When powering back up, the BSM loads the bootstrap program.  This reloads
2710   * the runtime uCode instructions and the backup data cache into SRAM,
2711   * and re-launches the runtime uCode from where it left off.
2712   */
2713 static int iwl3945_load_bsm(struct iwl_priv *priv)
2714 {
2715         __le32 *image = priv->ucode_boot.v_addr;
2716         u32 len = priv->ucode_boot.len;
2717         dma_addr_t pinst;
2718         dma_addr_t pdata;
2719         u32 inst_len;
2720         u32 data_len;
2721         int rc;
2722         int i;
2723         u32 done;
2724         u32 reg_offset;
2725
2726         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2727
2728         /* make sure bootstrap program is no larger than BSM's SRAM size */
2729         if (len > IWL39_MAX_BSM_SIZE)
2730                 return -EINVAL;
2731
2732         /* Tell bootstrap uCode where to find the "Initialize" uCode
2733         *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2734         * NOTE:  iwl3945_initialize_alive_start() will replace these values,
2735         *        after the "initialize" uCode has run, to point to
2736         *        runtime/protocol instructions and backup data cache. */
2737         pinst = priv->ucode_init.p_addr;
2738         pdata = priv->ucode_init_data.p_addr;
2739         inst_len = priv->ucode_init.len;
2740         data_len = priv->ucode_init_data.len;
2741
2742         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2743         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2744         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2745         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2746
2747         /* Fill BSM memory with bootstrap instructions */
2748         for (reg_offset = BSM_SRAM_LOWER_BOUND;
2749              reg_offset < BSM_SRAM_LOWER_BOUND + len;
2750              reg_offset += sizeof(u32), image++)
2751                 _iwl_write_prph(priv, reg_offset,
2752                                           le32_to_cpu(*image));
2753
2754         rc = iwl3945_verify_bsm(priv);
2755         if (rc)
2756                 return rc;
2757
2758         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2759         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2760         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2761                                  IWL39_RTC_INST_LOWER_BOUND);
2762         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2763
2764         /* Load bootstrap code into instruction SRAM now,
2765          *   to prepare to load "initialize" uCode */
2766         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2767                 BSM_WR_CTRL_REG_BIT_START);
2768
2769         /* Wait for load of bootstrap uCode to finish */
2770         for (i = 0; i < 100; i++) {
2771                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2772                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2773                         break;
2774                 udelay(10);
2775         }
2776         if (i < 100)
2777                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2778         else {
2779                 IWL_ERR(priv, "BSM write did not complete!\n");
2780                 return -EIO;
2781         }
2782
2783         /* Enable future boot loads whenever power management unit triggers it
2784          *   (e.g. when powering back up after power-save shutdown) */
2785         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2786                 BSM_WR_CTRL_REG_BIT_START_EN);
2787
2788         return 0;
2789 }
2790
2791 #define IWL3945_UCODE_GET(item)                                         \
2792 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode,\
2793                                     u32 api_ver)                        \
2794 {                                                                       \
2795         return le32_to_cpu(ucode->u.v1.item);                           \
2796 }
2797
2798 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2799 {
2800         return UCODE_HEADER_SIZE(1);
2801 }
2802 static u32 iwl3945_ucode_get_build(const struct iwl_ucode_header *ucode,
2803                                    u32 api_ver)
2804 {
2805         return 0;
2806 }
2807 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode,
2808                                   u32 api_ver)
2809 {
2810         return (u8 *) ucode->u.v1.data;
2811 }
2812
2813 IWL3945_UCODE_GET(inst_size);
2814 IWL3945_UCODE_GET(data_size);
2815 IWL3945_UCODE_GET(init_size);
2816 IWL3945_UCODE_GET(init_data_size);
2817 IWL3945_UCODE_GET(boot_size);
2818
2819 static struct iwl_hcmd_ops iwl3945_hcmd = {
2820         .rxon_assoc = iwl3945_send_rxon_assoc,
2821         .commit_rxon = iwl3945_commit_rxon,
2822 };
2823
2824 static struct iwl_ucode_ops iwl3945_ucode = {
2825         .get_header_size = iwl3945_ucode_get_header_size,
2826         .get_build = iwl3945_ucode_get_build,
2827         .get_inst_size = iwl3945_ucode_get_inst_size,
2828         .get_data_size = iwl3945_ucode_get_data_size,
2829         .get_init_size = iwl3945_ucode_get_init_size,
2830         .get_init_data_size = iwl3945_ucode_get_init_data_size,
2831         .get_boot_size = iwl3945_ucode_get_boot_size,
2832         .get_data = iwl3945_ucode_get_data,
2833 };
2834
2835 static struct iwl_lib_ops iwl3945_lib = {
2836         .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2837         .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2838         .txq_init = iwl3945_hw_tx_queue_init,
2839         .load_ucode = iwl3945_load_bsm,
2840         .apm_ops = {
2841                 .init = iwl3945_apm_init,
2842                 .reset = iwl3945_apm_reset,
2843                 .stop = iwl3945_apm_stop,
2844                 .config = iwl3945_nic_config,
2845                 .set_pwr_src = iwl3945_set_pwr_src,
2846         },
2847         .eeprom_ops = {
2848                 .regulatory_bands = {
2849                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2850                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2851                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2852                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2853                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2854                         EEPROM_REGULATORY_BAND_NO_HT40,
2855                         EEPROM_REGULATORY_BAND_NO_HT40,
2856                 },
2857                 .verify_signature  = iwlcore_eeprom_verify_signature,
2858                 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2859                 .release_semaphore = iwl3945_eeprom_release_semaphore,
2860                 .query_addr = iwlcore_eeprom_query_addr,
2861         },
2862         .send_tx_power  = iwl3945_send_tx_power,
2863         .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2864         .post_associate = iwl3945_post_associate,
2865         .isr = iwl_isr_legacy,
2866         .config_ap = iwl3945_config_ap,
2867 };
2868
2869 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2870         .get_hcmd_size = iwl3945_get_hcmd_size,
2871         .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2872 };
2873
2874 static struct iwl_ops iwl3945_ops = {
2875         .ucode = &iwl3945_ucode,
2876         .lib = &iwl3945_lib,
2877         .hcmd = &iwl3945_hcmd,
2878         .utils = &iwl3945_hcmd_utils,
2879 };
2880
2881 static struct iwl_cfg iwl3945_bg_cfg = {
2882         .name = "3945BG",
2883         .fw_name_pre = IWL3945_FW_PRE,
2884         .ucode_api_max = IWL3945_UCODE_API_MAX,
2885         .ucode_api_min = IWL3945_UCODE_API_MIN,
2886         .sku = IWL_SKU_G,
2887         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2888         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2889         .ops = &iwl3945_ops,
2890         .mod_params = &iwl3945_mod_params,
2891         .use_isr_legacy = true
2892 };
2893
2894 static struct iwl_cfg iwl3945_abg_cfg = {
2895         .name = "3945ABG",
2896         .fw_name_pre = IWL3945_FW_PRE,
2897         .ucode_api_max = IWL3945_UCODE_API_MAX,
2898         .ucode_api_min = IWL3945_UCODE_API_MIN,
2899         .sku = IWL_SKU_A|IWL_SKU_G,
2900         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2901         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2902         .ops = &iwl3945_ops,
2903         .mod_params = &iwl3945_mod_params,
2904         .use_isr_legacy = true
2905 };
2906
2907 struct pci_device_id iwl3945_hw_card_ids[] = {
2908         {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2909         {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2910         {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2911         {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2912         {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2913         {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2914         {0}
2915 };
2916
2917 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);