ae7f1632ccbfa6c6de0256becbc81888ffda467a
[pandora-kernel.git] / 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         iwl_update_stats(priv, false, hdr->frame_control, len);
581
582         memcpy(IEEE80211_SKB_RXCB(rxb->skb), stats, sizeof(*stats));
583         ieee80211_rx_irqsafe(priv->hw, rxb->skb);
584         rxb->skb = NULL;
585 }
586
587 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
588
589 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
590                                 struct iwl_rx_mem_buffer *rxb)
591 {
592         struct ieee80211_hdr *header;
593         struct ieee80211_rx_status rx_status;
594         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
595         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
596         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
597         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
598         int snr;
599         u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
600         u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
601         u8 network_packet;
602
603         rx_status.flag = 0;
604         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
605         rx_status.freq =
606                 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
607         rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
608                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
609
610         rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
611         if (rx_status.band == IEEE80211_BAND_5GHZ)
612                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
613
614         rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
615                                         RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
616
617         /* set the preamble flag if appropriate */
618         if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
619                 rx_status.flag |= RX_FLAG_SHORTPRE;
620
621         if ((unlikely(rx_stats->phy_count > 20))) {
622                 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
623                                 rx_stats->phy_count);
624                 return;
625         }
626
627         if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
628             || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
629                 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
630                 return;
631         }
632
633
634
635         /* Convert 3945's rssi indicator to dBm */
636         rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
637
638         /* Set default noise value to -127 */
639         if (priv->last_rx_noise == 0)
640                 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
641
642         /* 3945 provides noise info for OFDM frames only.
643          * sig_avg and noise_diff are measured by the 3945's digital signal
644          *   processor (DSP), and indicate linear levels of signal level and
645          *   distortion/noise within the packet preamble after
646          *   automatic gain control (AGC).  sig_avg should stay fairly
647          *   constant if the radio's AGC is working well.
648          * Since these values are linear (not dB or dBm), linear
649          *   signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
650          * Convert linear SNR to dB SNR, then subtract that from rssi dBm
651          *   to obtain noise level in dBm.
652          * Calculate rx_status.signal (quality indicator in %) based on SNR. */
653         if (rx_stats_noise_diff) {
654                 snr = rx_stats_sig_avg / rx_stats_noise_diff;
655                 rx_status.noise = rx_status.signal -
656                                         iwl3945_calc_db_from_ratio(snr);
657                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
658                                                          rx_status.noise);
659
660         /* If noise info not available, calculate signal quality indicator (%)
661          *   using just the dBm signal level. */
662         } else {
663                 rx_status.noise = priv->last_rx_noise;
664                 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
665         }
666
667
668         IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
669                         rx_status.signal, rx_status.noise, rx_status.qual,
670                         rx_stats_sig_avg, rx_stats_noise_diff);
671
672         header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
673
674         network_packet = iwl3945_is_network_packet(priv, header);
675
676         IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
677                               network_packet ? '*' : ' ',
678                               le16_to_cpu(rx_hdr->channel),
679                               rx_status.signal, rx_status.signal,
680                               rx_status.noise, rx_status.rate_idx);
681
682         /* Set "1" to report good data frames in groups of 100 */
683         iwl3945_dbg_report_frame(priv, pkt, header, 1);
684         iwl_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len), header);
685
686         if (network_packet) {
687                 priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
688                 priv->last_tsf = le64_to_cpu(rx_end->timestamp);
689                 priv->last_rx_rssi = rx_status.signal;
690                 priv->last_rx_noise = rx_status.noise;
691         }
692
693         iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
694 }
695
696 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
697                                      struct iwl_tx_queue *txq,
698                                      dma_addr_t addr, u16 len, u8 reset, u8 pad)
699 {
700         int count;
701         struct iwl_queue *q;
702         struct iwl3945_tfd *tfd, *tfd_tmp;
703
704         q = &txq->q;
705         tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
706         tfd = &tfd_tmp[q->write_ptr];
707
708         if (reset)
709                 memset(tfd, 0, sizeof(*tfd));
710
711         count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
712
713         if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
714                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
715                           NUM_TFD_CHUNKS);
716                 return -EINVAL;
717         }
718
719         tfd->tbs[count].addr = cpu_to_le32(addr);
720         tfd->tbs[count].len = cpu_to_le32(len);
721
722         count++;
723
724         tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
725                                          TFD_CTL_PAD_SET(pad));
726
727         return 0;
728 }
729
730 /**
731  * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
732  *
733  * Does NOT advance any indexes
734  */
735 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
736 {
737         struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
738         int index = txq->q.read_ptr;
739         struct iwl3945_tfd *tfd = &tfd_tmp[index];
740         struct pci_dev *dev = priv->pci_dev;
741         int i;
742         int counter;
743
744         /* sanity check */
745         counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
746         if (counter > NUM_TFD_CHUNKS) {
747                 IWL_ERR(priv, "Too many chunks: %i\n", counter);
748                 /* @todo issue fatal error, it is quite serious situation */
749                 return;
750         }
751
752         /* Unmap tx_cmd */
753         if (counter)
754                 pci_unmap_single(dev,
755                                 pci_unmap_addr(&txq->meta[index], mapping),
756                                 pci_unmap_len(&txq->meta[index], len),
757                                 PCI_DMA_TODEVICE);
758
759         /* unmap chunks if any */
760
761         for (i = 1; i < counter; i++) {
762                 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
763                          le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
764                 if (txq->txb[txq->q.read_ptr].skb[0]) {
765                         struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
766                         if (txq->txb[txq->q.read_ptr].skb[0]) {
767                                 /* Can be called from interrupt context */
768                                 dev_kfree_skb_any(skb);
769                                 txq->txb[txq->q.read_ptr].skb[0] = NULL;
770                         }
771                 }
772         }
773         return ;
774 }
775
776 /**
777  * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
778  *
779 */
780 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
781                                   struct iwl_device_cmd *cmd,
782                                   struct ieee80211_tx_info *info,
783                                   struct ieee80211_hdr *hdr,
784                                   int sta_id, int tx_id)
785 {
786         u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
787         u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
788         u16 rate_mask;
789         int rate;
790         u8 rts_retry_limit;
791         u8 data_retry_limit;
792         __le32 tx_flags;
793         __le16 fc = hdr->frame_control;
794         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
795
796         rate = iwl3945_rates[rate_index].plcp;
797         tx_flags = tx->tx_flags;
798
799         /* We need to figure out how to get the sta->supp_rates while
800          * in this running context */
801         rate_mask = IWL_RATES_MASK;
802
803         if (tx_id >= IWL_CMD_QUEUE_NUM)
804                 rts_retry_limit = 3;
805         else
806                 rts_retry_limit = 7;
807
808         if (ieee80211_is_probe_resp(fc)) {
809                 data_retry_limit = 3;
810                 if (data_retry_limit < rts_retry_limit)
811                         rts_retry_limit = data_retry_limit;
812         } else
813                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
814
815         if (priv->data_retry_limit != -1)
816                 data_retry_limit = priv->data_retry_limit;
817
818         if (ieee80211_is_mgmt(fc)) {
819                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
820                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
821                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
822                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
823                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
824                         if (tx_flags & TX_CMD_FLG_RTS_MSK) {
825                                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
826                                 tx_flags |= TX_CMD_FLG_CTS_MSK;
827                         }
828                         break;
829                 default:
830                         break;
831                 }
832         }
833
834         tx->rts_retry_limit = rts_retry_limit;
835         tx->data_retry_limit = data_retry_limit;
836         tx->rate = rate;
837         tx->tx_flags = tx_flags;
838
839         /* OFDM */
840         tx->supp_rates[0] =
841            ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
842
843         /* CCK */
844         tx->supp_rates[1] = (rate_mask & 0xF);
845
846         IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
847                        "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
848                        tx->rate, le32_to_cpu(tx->tx_flags),
849                        tx->supp_rates[1], tx->supp_rates[0]);
850 }
851
852 u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
853 {
854         unsigned long flags_spin;
855         struct iwl_station_entry *station;
856
857         if (sta_id == IWL_INVALID_STATION)
858                 return IWL_INVALID_STATION;
859
860         spin_lock_irqsave(&priv->sta_lock, flags_spin);
861         station = &priv->stations[sta_id];
862
863         station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
864         station->sta.rate_n_flags = cpu_to_le16(tx_rate);
865         station->sta.mode = STA_CONTROL_MODIFY_MSK;
866
867         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
868
869         iwl_send_add_sta(priv, &station->sta, flags);
870         IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
871                         sta_id, tx_rate);
872         return sta_id;
873 }
874
875 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
876 {
877         if (src == IWL_PWR_SRC_VAUX) {
878                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
879                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
880                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
881                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
882
883                         iwl_poll_bit(priv, CSR_GPIO_IN,
884                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
885                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
886                 }
887         } else {
888                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
889                                 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
890                                 ~APMG_PS_CTRL_MSK_PWR_SRC);
891
892                 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
893                              CSR_GPIO_IN_BIT_AUX_POWER, 5000);  /* uS */
894         }
895
896         return 0;
897 }
898
899 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
900 {
901         iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr);
902         iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
903         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
904         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
905                 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
906                 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
907                 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
908                 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
909                 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
910                 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
911                 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
912                 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
913
914         /* fake read to flush all prev I/O */
915         iwl_read_direct32(priv, FH39_RSSR_CTRL);
916
917         return 0;
918 }
919
920 static int iwl3945_tx_reset(struct iwl_priv *priv)
921 {
922
923         /* bypass mode */
924         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
925
926         /* RA 0 is active */
927         iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
928
929         /* all 6 fifo are active */
930         iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
931
932         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
933         iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
934         iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
935         iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
936
937         iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
938                              priv->shared_phys);
939
940         iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
941                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
942                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
943                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
944                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
945                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
946                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
947                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
948
949
950         return 0;
951 }
952
953 /**
954  * iwl3945_txq_ctx_reset - Reset TX queue context
955  *
956  * Destroys all DMA structures and initialize them again
957  */
958 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
959 {
960         int rc;
961         int txq_id, slots_num;
962
963         iwl3945_hw_txq_ctx_free(priv);
964
965         /* Tx CMD queue */
966         rc = iwl3945_tx_reset(priv);
967         if (rc)
968                 goto error;
969
970         /* Tx queue(s) */
971         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
972                 slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
973                                 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
974                 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
975                                        txq_id);
976                 if (rc) {
977                         IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
978                         goto error;
979                 }
980         }
981
982         return rc;
983
984  error:
985         iwl3945_hw_txq_ctx_free(priv);
986         return rc;
987 }
988
989 static int iwl3945_apm_init(struct iwl_priv *priv)
990 {
991         int ret;
992
993         iwl_power_initialize(priv);
994
995         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
996                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
997
998         /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
999         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1000                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1001
1002         /* set "initialization complete" bit to move adapter
1003         * D0U* --> D0A* state */
1004         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1005
1006         ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1007                             CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1008         if (ret < 0) {
1009                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1010                 goto out;
1011         }
1012
1013         /* enable DMA */
1014         iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
1015                                                 APMG_CLK_VAL_BSM_CLK_RQT);
1016
1017         udelay(20);
1018
1019         /* disable L1-Active */
1020         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1021                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1022
1023 out:
1024         return ret;
1025 }
1026
1027 static void iwl3945_nic_config(struct iwl_priv *priv)
1028 {
1029         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1030         unsigned long flags;
1031         u8 rev_id = 0;
1032
1033         spin_lock_irqsave(&priv->lock, flags);
1034
1035         /* Determine HW type */
1036         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
1037
1038         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
1039
1040         if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
1041                 IWL_DEBUG_INFO(priv, "RTP type \n");
1042         else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
1043                 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
1044                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1045                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
1046         } else {
1047                 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
1048                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1049                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
1050         }
1051
1052         if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
1053                 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
1054                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1055                             CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
1056         } else
1057                 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
1058
1059         if ((eeprom->board_revision & 0xF0) == 0xD0) {
1060                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1061                                eeprom->board_revision);
1062                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1063                             CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1064         } else {
1065                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1066                                eeprom->board_revision);
1067                 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1068                               CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1069         }
1070
1071         if (eeprom->almgor_m_version <= 1) {
1072                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1073                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1074                 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
1075                                eeprom->almgor_m_version);
1076         } else {
1077                 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
1078                                eeprom->almgor_m_version);
1079                 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1080                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1081         }
1082         spin_unlock_irqrestore(&priv->lock, flags);
1083
1084         if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1085                 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
1086
1087         if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1088                 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
1089 }
1090
1091 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1092 {
1093         int rc;
1094         unsigned long flags;
1095         struct iwl_rx_queue *rxq = &priv->rxq;
1096
1097         spin_lock_irqsave(&priv->lock, flags);
1098         priv->cfg->ops->lib->apm_ops.init(priv);
1099         spin_unlock_irqrestore(&priv->lock, flags);
1100
1101         rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
1102         if (rc)
1103                 return rc;
1104
1105         priv->cfg->ops->lib->apm_ops.config(priv);
1106
1107         /* Allocate the RX queue, or reset if it is already allocated */
1108         if (!rxq->bd) {
1109                 rc = iwl_rx_queue_alloc(priv);
1110                 if (rc) {
1111                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
1112                         return -ENOMEM;
1113                 }
1114         } else
1115                 iwl3945_rx_queue_reset(priv, rxq);
1116
1117         iwl3945_rx_replenish(priv);
1118
1119         iwl3945_rx_init(priv, rxq);
1120
1121
1122         /* Look at using this instead:
1123         rxq->need_update = 1;
1124         iwl_rx_queue_update_write_ptr(priv, rxq);
1125         */
1126
1127         iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1128
1129         rc = iwl3945_txq_ctx_reset(priv);
1130         if (rc)
1131                 return rc;
1132
1133         set_bit(STATUS_INIT, &priv->status);
1134
1135         return 0;
1136 }
1137
1138 /**
1139  * iwl3945_hw_txq_ctx_free - Free TXQ Context
1140  *
1141  * Destroy all TX DMA queues and structures
1142  */
1143 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1144 {
1145         int txq_id;
1146
1147         /* Tx queues */
1148         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
1149                 if (txq_id == IWL_CMD_QUEUE_NUM)
1150                         iwl_cmd_queue_free(priv);
1151                 else
1152                         iwl_tx_queue_free(priv, txq_id);
1153
1154 }
1155
1156 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1157 {
1158         int txq_id;
1159
1160         /* stop SCD */
1161         iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1162
1163         /* reset TFD queues */
1164         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
1165                 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1166                 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1167                                 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1168                                 1000);
1169         }
1170
1171         iwl3945_hw_txq_ctx_free(priv);
1172 }
1173
1174 static int iwl3945_apm_stop_master(struct iwl_priv *priv)
1175 {
1176         int ret = 0;
1177         unsigned long flags;
1178
1179         spin_lock_irqsave(&priv->lock, flags);
1180
1181         /* set stop master bit */
1182         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1183
1184         iwl_poll_direct_bit(priv, CSR_RESET,
1185                             CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1186
1187         if (ret < 0)
1188                 goto out;
1189
1190 out:
1191         spin_unlock_irqrestore(&priv->lock, flags);
1192         IWL_DEBUG_INFO(priv, "stop master\n");
1193
1194         return ret;
1195 }
1196
1197 static void iwl3945_apm_stop(struct iwl_priv *priv)
1198 {
1199         unsigned long flags;
1200
1201         iwl3945_apm_stop_master(priv);
1202
1203         spin_lock_irqsave(&priv->lock, flags);
1204
1205         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1206
1207         udelay(10);
1208         /* clear "init complete"  move adapter D0A* --> D0U state */
1209         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1210         spin_unlock_irqrestore(&priv->lock, flags);
1211 }
1212
1213 static int iwl3945_apm_reset(struct iwl_priv *priv)
1214 {
1215         iwl3945_apm_stop_master(priv);
1216
1217
1218         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1219         udelay(10);
1220
1221         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1222
1223         iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1224                          CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1225
1226         iwl_write_prph(priv, APMG_CLK_CTRL_REG,
1227                                 APMG_CLK_VAL_BSM_CLK_RQT);
1228
1229         iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
1230         iwl_write_prph(priv, APMG_RTC_INT_STT_REG,
1231                                         0xFFFFFFFF);
1232
1233         /* enable DMA */
1234         iwl_write_prph(priv, APMG_CLK_EN_REG,
1235                                 APMG_CLK_VAL_DMA_CLK_RQT |
1236                                 APMG_CLK_VAL_BSM_CLK_RQT);
1237         udelay(10);
1238
1239         iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
1240                                 APMG_PS_CTRL_VAL_RESET_REQ);
1241         udelay(5);
1242         iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
1243                                 APMG_PS_CTRL_VAL_RESET_REQ);
1244
1245         /* Clear the 'host command active' bit... */
1246         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1247
1248         wake_up_interruptible(&priv->wait_command_queue);
1249
1250         return 0;
1251 }
1252
1253 /**
1254  * iwl3945_hw_reg_adjust_power_by_temp
1255  * return index delta into power gain settings table
1256 */
1257 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1258 {
1259         return (new_reading - old_reading) * (-11) / 100;
1260 }
1261
1262 /**
1263  * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1264  */
1265 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1266 {
1267         return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1268 }
1269
1270 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1271 {
1272         return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1273 }
1274
1275 /**
1276  * iwl3945_hw_reg_txpower_get_temperature
1277  * get the current temperature by reading from NIC
1278 */
1279 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1280 {
1281         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1282         int temperature;
1283
1284         temperature = iwl3945_hw_get_temperature(priv);
1285
1286         /* driver's okay range is -260 to +25.
1287          *   human readable okay range is 0 to +285 */
1288         IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1289
1290         /* handle insane temp reading */
1291         if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1292                 IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
1293
1294                 /* if really really hot(?),
1295                  *   substitute the 3rd band/group's temp measured at factory */
1296                 if (priv->last_temperature > 100)
1297                         temperature = eeprom->groups[2].temperature;
1298                 else /* else use most recent "sane" value from driver */
1299                         temperature = priv->last_temperature;
1300         }
1301
1302         return temperature;     /* raw, not "human readable" */
1303 }
1304
1305 /* Adjust Txpower only if temperature variance is greater than threshold.
1306  *
1307  * Both are lower than older versions' 9 degrees */
1308 #define IWL_TEMPERATURE_LIMIT_TIMER   6
1309
1310 /**
1311  * is_temp_calib_needed - determines if new calibration is needed
1312  *
1313  * records new temperature in tx_mgr->temperature.
1314  * replaces tx_mgr->last_temperature *only* if calib needed
1315  *    (assumes caller will actually do the calibration!). */
1316 static int is_temp_calib_needed(struct iwl_priv *priv)
1317 {
1318         int temp_diff;
1319
1320         priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1321         temp_diff = priv->temperature - priv->last_temperature;
1322
1323         /* get absolute value */
1324         if (temp_diff < 0) {
1325                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1326                 temp_diff = -temp_diff;
1327         } else if (temp_diff == 0)
1328                 IWL_DEBUG_POWER(priv, "Same temp,\n");
1329         else
1330                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1331
1332         /* if we don't need calibration, *don't* update last_temperature */
1333         if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1334                 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1335                 return 0;
1336         }
1337
1338         IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1339
1340         /* assume that caller will actually do calib ...
1341          *   update the "last temperature" value */
1342         priv->last_temperature = priv->temperature;
1343         return 1;
1344 }
1345
1346 #define IWL_MAX_GAIN_ENTRIES 78
1347 #define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
1348 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1349
1350 /* radio and DSP power table, each step is 1/2 dB.
1351  * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1352 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1353         {
1354          {251, 127},            /* 2.4 GHz, highest power */
1355          {251, 127},
1356          {251, 127},
1357          {251, 127},
1358          {251, 125},
1359          {251, 110},
1360          {251, 105},
1361          {251, 98},
1362          {187, 125},
1363          {187, 115},
1364          {187, 108},
1365          {187, 99},
1366          {243, 119},
1367          {243, 111},
1368          {243, 105},
1369          {243, 97},
1370          {243, 92},
1371          {211, 106},
1372          {211, 100},
1373          {179, 120},
1374          {179, 113},
1375          {179, 107},
1376          {147, 125},
1377          {147, 119},
1378          {147, 112},
1379          {147, 106},
1380          {147, 101},
1381          {147, 97},
1382          {147, 91},
1383          {115, 107},
1384          {235, 121},
1385          {235, 115},
1386          {235, 109},
1387          {203, 127},
1388          {203, 121},
1389          {203, 115},
1390          {203, 108},
1391          {203, 102},
1392          {203, 96},
1393          {203, 92},
1394          {171, 110},
1395          {171, 104},
1396          {171, 98},
1397          {139, 116},
1398          {227, 125},
1399          {227, 119},
1400          {227, 113},
1401          {227, 107},
1402          {227, 101},
1403          {227, 96},
1404          {195, 113},
1405          {195, 106},
1406          {195, 102},
1407          {195, 95},
1408          {163, 113},
1409          {163, 106},
1410          {163, 102},
1411          {163, 95},
1412          {131, 113},
1413          {131, 106},
1414          {131, 102},
1415          {131, 95},
1416          {99, 113},
1417          {99, 106},
1418          {99, 102},
1419          {99, 95},
1420          {67, 113},
1421          {67, 106},
1422          {67, 102},
1423          {67, 95},
1424          {35, 113},
1425          {35, 106},
1426          {35, 102},
1427          {35, 95},
1428          {3, 113},
1429          {3, 106},
1430          {3, 102},
1431          {3, 95} },             /* 2.4 GHz, lowest power */
1432         {
1433          {251, 127},            /* 5.x GHz, highest power */
1434          {251, 120},
1435          {251, 114},
1436          {219, 119},
1437          {219, 101},
1438          {187, 113},
1439          {187, 102},
1440          {155, 114},
1441          {155, 103},
1442          {123, 117},
1443          {123, 107},
1444          {123, 99},
1445          {123, 92},
1446          {91, 108},
1447          {59, 125},
1448          {59, 118},
1449          {59, 109},
1450          {59, 102},
1451          {59, 96},
1452          {59, 90},
1453          {27, 104},
1454          {27, 98},
1455          {27, 92},
1456          {115, 118},
1457          {115, 111},
1458          {115, 104},
1459          {83, 126},
1460          {83, 121},
1461          {83, 113},
1462          {83, 105},
1463          {83, 99},
1464          {51, 118},
1465          {51, 111},
1466          {51, 104},
1467          {51, 98},
1468          {19, 116},
1469          {19, 109},
1470          {19, 102},
1471          {19, 98},
1472          {19, 93},
1473          {171, 113},
1474          {171, 107},
1475          {171, 99},
1476          {139, 120},
1477          {139, 113},
1478          {139, 107},
1479          {139, 99},
1480          {107, 120},
1481          {107, 113},
1482          {107, 107},
1483          {107, 99},
1484          {75, 120},
1485          {75, 113},
1486          {75, 107},
1487          {75, 99},
1488          {43, 120},
1489          {43, 113},
1490          {43, 107},
1491          {43, 99},
1492          {11, 120},
1493          {11, 113},
1494          {11, 107},
1495          {11, 99},
1496          {131, 107},
1497          {131, 99},
1498          {99, 120},
1499          {99, 113},
1500          {99, 107},
1501          {99, 99},
1502          {67, 120},
1503          {67, 113},
1504          {67, 107},
1505          {67, 99},
1506          {35, 120},
1507          {35, 113},
1508          {35, 107},
1509          {35, 99},
1510          {3, 120} }             /* 5.x GHz, lowest power */
1511 };
1512
1513 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1514 {
1515         if (index < 0)
1516                 return 0;
1517         if (index >= IWL_MAX_GAIN_ENTRIES)
1518                 return IWL_MAX_GAIN_ENTRIES - 1;
1519         return (u8) index;
1520 }
1521
1522 /* Kick off thermal recalibration check every 60 seconds */
1523 #define REG_RECALIB_PERIOD (60)
1524
1525 /**
1526  * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1527  *
1528  * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1529  * or 6 Mbit (OFDM) rates.
1530  */
1531 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1532                                s32 rate_index, const s8 *clip_pwrs,
1533                                struct iwl_channel_info *ch_info,
1534                                int band_index)
1535 {
1536         struct iwl3945_scan_power_info *scan_power_info;
1537         s8 power;
1538         u8 power_index;
1539
1540         scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1541
1542         /* use this channel group's 6Mbit clipping/saturation pwr,
1543          *   but cap at regulatory scan power restriction (set during init
1544          *   based on eeprom channel data) for this channel.  */
1545         power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1546
1547         /* further limit to user's max power preference.
1548          * FIXME:  Other spectrum management power limitations do not
1549          *   seem to apply?? */
1550         power = min(power, priv->tx_power_user_lmt);
1551         scan_power_info->requested_power = power;
1552
1553         /* find difference between new scan *power* and current "normal"
1554          *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
1555          *   current "normal" temperature-compensated Tx power *index* for
1556          *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1557          *   *index*. */
1558         power_index = ch_info->power_info[rate_index].power_table_index
1559             - (power - ch_info->power_info
1560                [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1561
1562         /* store reference index that we use when adjusting *all* scan
1563          *   powers.  So we can accommodate user (all channel) or spectrum
1564          *   management (single channel) power changes "between" temperature
1565          *   feedback compensation procedures.
1566          * don't force fit this reference index into gain table; it may be a
1567          *   negative number.  This will help avoid errors when we're at
1568          *   the lower bounds (highest gains, for warmest temperatures)
1569          *   of the table. */
1570
1571         /* don't exceed table bounds for "real" setting */
1572         power_index = iwl3945_hw_reg_fix_power_index(power_index);
1573
1574         scan_power_info->power_table_index = power_index;
1575         scan_power_info->tpc.tx_gain =
1576             power_gain_table[band_index][power_index].tx_gain;
1577         scan_power_info->tpc.dsp_atten =
1578             power_gain_table[band_index][power_index].dsp_atten;
1579 }
1580
1581 /**
1582  * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1583  *
1584  * Configures power settings for all rates for the current channel,
1585  * using values from channel info struct, and send to NIC
1586  */
1587 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1588 {
1589         int rate_idx, i;
1590         const struct iwl_channel_info *ch_info = NULL;
1591         struct iwl3945_txpowertable_cmd txpower = {
1592                 .channel = priv->active_rxon.channel,
1593         };
1594
1595         txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1596         ch_info = iwl_get_channel_info(priv,
1597                                        priv->band,
1598                                        le16_to_cpu(priv->active_rxon.channel));
1599         if (!ch_info) {
1600                 IWL_ERR(priv,
1601                         "Failed to get channel info for channel %d [%d]\n",
1602                         le16_to_cpu(priv->active_rxon.channel), priv->band);
1603                 return -EINVAL;
1604         }
1605
1606         if (!is_channel_valid(ch_info)) {
1607                 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1608                                 "non-Tx channel.\n");
1609                 return 0;
1610         }
1611
1612         /* fill cmd with power settings for all rates for current channel */
1613         /* Fill OFDM rate */
1614         for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1615              rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1616
1617                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1618                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1619
1620                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1621                                 le16_to_cpu(txpower.channel),
1622                                 txpower.band,
1623                                 txpower.power[i].tpc.tx_gain,
1624                                 txpower.power[i].tpc.dsp_atten,
1625                                 txpower.power[i].rate);
1626         }
1627         /* Fill CCK rates */
1628         for (rate_idx = IWL_FIRST_CCK_RATE;
1629              rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1630                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1631                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1632
1633                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1634                                 le16_to_cpu(txpower.channel),
1635                                 txpower.band,
1636                                 txpower.power[i].tpc.tx_gain,
1637                                 txpower.power[i].tpc.dsp_atten,
1638                                 txpower.power[i].rate);
1639         }
1640
1641         return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1642                                 sizeof(struct iwl3945_txpowertable_cmd),
1643                                 &txpower);
1644
1645 }
1646
1647 /**
1648  * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1649  * @ch_info: Channel to update.  Uses power_info.requested_power.
1650  *
1651  * Replace requested_power and base_power_index ch_info fields for
1652  * one channel.
1653  *
1654  * Called if user or spectrum management changes power preferences.
1655  * Takes into account h/w and modulation limitations (clip power).
1656  *
1657  * This does *not* send anything to NIC, just sets up ch_info for one channel.
1658  *
1659  * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1660  *       properly fill out the scan powers, and actual h/w gain settings,
1661  *       and send changes to NIC
1662  */
1663 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1664                              struct iwl_channel_info *ch_info)
1665 {
1666         struct iwl3945_channel_power_info *power_info;
1667         int power_changed = 0;
1668         int i;
1669         const s8 *clip_pwrs;
1670         int power;
1671
1672         /* Get this chnlgrp's rate-to-max/clip-powers table */
1673         clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1674
1675         /* Get this channel's rate-to-current-power settings table */
1676         power_info = ch_info->power_info;
1677
1678         /* update OFDM Txpower settings */
1679         for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1680              i++, ++power_info) {
1681                 int delta_idx;
1682
1683                 /* limit new power to be no more than h/w capability */
1684                 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1685                 if (power == power_info->requested_power)
1686                         continue;
1687
1688                 /* find difference between old and new requested powers,
1689                  *    update base (non-temp-compensated) power index */
1690                 delta_idx = (power - power_info->requested_power) * 2;
1691                 power_info->base_power_index -= delta_idx;
1692
1693                 /* save new requested power value */
1694                 power_info->requested_power = power;
1695
1696                 power_changed = 1;
1697         }
1698
1699         /* update CCK Txpower settings, based on OFDM 12M setting ...
1700          *    ... all CCK power settings for a given channel are the *same*. */
1701         if (power_changed) {
1702                 power =
1703                     ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1704                     requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1705
1706                 /* do all CCK rates' iwl3945_channel_power_info structures */
1707                 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1708                         power_info->requested_power = power;
1709                         power_info->base_power_index =
1710                             ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1711                             base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1712                         ++power_info;
1713                 }
1714         }
1715
1716         return 0;
1717 }
1718
1719 /**
1720  * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1721  *
1722  * NOTE: Returned power limit may be less (but not more) than requested,
1723  *       based strictly on regulatory (eeprom and spectrum mgt) limitations
1724  *       (no consideration for h/w clipping limitations).
1725  */
1726 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1727 {
1728         s8 max_power;
1729
1730 #if 0
1731         /* if we're using TGd limits, use lower of TGd or EEPROM */
1732         if (ch_info->tgd_data.max_power != 0)
1733                 max_power = min(ch_info->tgd_data.max_power,
1734                                 ch_info->eeprom.max_power_avg);
1735
1736         /* else just use EEPROM limits */
1737         else
1738 #endif
1739                 max_power = ch_info->eeprom.max_power_avg;
1740
1741         return min(max_power, ch_info->max_power_avg);
1742 }
1743
1744 /**
1745  * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1746  *
1747  * Compensate txpower settings of *all* channels for temperature.
1748  * This only accounts for the difference between current temperature
1749  *   and the factory calibration temperatures, and bases the new settings
1750  *   on the channel's base_power_index.
1751  *
1752  * If RxOn is "associated", this sends the new Txpower to NIC!
1753  */
1754 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1755 {
1756         struct iwl_channel_info *ch_info = NULL;
1757         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1758         int delta_index;
1759         const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1760         u8 a_band;
1761         u8 rate_index;
1762         u8 scan_tbl_index;
1763         u8 i;
1764         int ref_temp;
1765         int temperature = priv->temperature;
1766
1767         /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1768         for (i = 0; i < priv->channel_count; i++) {
1769                 ch_info = &priv->channel_info[i];
1770                 a_band = is_channel_a_band(ch_info);
1771
1772                 /* Get this chnlgrp's factory calibration temperature */
1773                 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1774                     temperature;
1775
1776                 /* get power index adjustment based on current and factory
1777                  * temps */
1778                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1779                                                               ref_temp);
1780
1781                 /* set tx power value for all rates, OFDM and CCK */
1782                 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1783                      rate_index++) {
1784                         int power_idx =
1785                             ch_info->power_info[rate_index].base_power_index;
1786
1787                         /* temperature compensate */
1788                         power_idx += delta_index;
1789
1790                         /* stay within table range */
1791                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1792                         ch_info->power_info[rate_index].
1793                             power_table_index = (u8) power_idx;
1794                         ch_info->power_info[rate_index].tpc =
1795                             power_gain_table[a_band][power_idx];
1796                 }
1797
1798                 /* Get this chnlgrp's rate-to-max/clip-powers table */
1799                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1800
1801                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1802                 for (scan_tbl_index = 0;
1803                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1804                         s32 actual_index = (scan_tbl_index == 0) ?
1805                             IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1806                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1807                                            actual_index, clip_pwrs,
1808                                            ch_info, a_band);
1809                 }
1810         }
1811
1812         /* send Txpower command for current channel to ucode */
1813         return priv->cfg->ops->lib->send_tx_power(priv);
1814 }
1815
1816 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1817 {
1818         struct iwl_channel_info *ch_info;
1819         s8 max_power;
1820         u8 a_band;
1821         u8 i;
1822
1823         if (priv->tx_power_user_lmt == power) {
1824                 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1825                                 "limit: %ddBm.\n", power);
1826                 return 0;
1827         }
1828
1829         IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1830         priv->tx_power_user_lmt = power;
1831
1832         /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1833
1834         for (i = 0; i < priv->channel_count; i++) {
1835                 ch_info = &priv->channel_info[i];
1836                 a_band = is_channel_a_band(ch_info);
1837
1838                 /* find minimum power of all user and regulatory constraints
1839                  *    (does not consider h/w clipping limitations) */
1840                 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1841                 max_power = min(power, max_power);
1842                 if (max_power != ch_info->curr_txpow) {
1843                         ch_info->curr_txpow = max_power;
1844
1845                         /* this considers the h/w clipping limitations */
1846                         iwl3945_hw_reg_set_new_power(priv, ch_info);
1847                 }
1848         }
1849
1850         /* update txpower settings for all channels,
1851          *   send to NIC if associated. */
1852         is_temp_calib_needed(priv);
1853         iwl3945_hw_reg_comp_txpower_temp(priv);
1854
1855         return 0;
1856 }
1857
1858 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
1859 {
1860         int rc = 0;
1861         struct iwl_rx_packet *res = NULL;
1862         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1863         struct iwl_host_cmd cmd = {
1864                 .id = REPLY_RXON_ASSOC,
1865                 .len = sizeof(rxon_assoc),
1866                 .flags = CMD_WANT_SKB,
1867                 .data = &rxon_assoc,
1868         };
1869         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1870         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1871
1872         if ((rxon1->flags == rxon2->flags) &&
1873             (rxon1->filter_flags == rxon2->filter_flags) &&
1874             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1875             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1876                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1877                 return 0;
1878         }
1879
1880         rxon_assoc.flags = priv->staging_rxon.flags;
1881         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1882         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1883         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1884         rxon_assoc.reserved = 0;
1885
1886         rc = iwl_send_cmd_sync(priv, &cmd);
1887         if (rc)
1888                 return rc;
1889
1890         res = (struct iwl_rx_packet *)cmd.reply_skb->data;
1891         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1892                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
1893                 rc = -EIO;
1894         }
1895
1896         priv->alloc_rxb_skb--;
1897         dev_kfree_skb_any(cmd.reply_skb);
1898
1899         return rc;
1900 }
1901
1902 /**
1903  * iwl3945_commit_rxon - commit staging_rxon to hardware
1904  *
1905  * The RXON command in staging_rxon is committed to the hardware and
1906  * the active_rxon structure is updated with the new data.  This
1907  * function correctly transitions out of the RXON_ASSOC_MSK state if
1908  * a HW tune is required based on the RXON structure changes.
1909  */
1910 static int iwl3945_commit_rxon(struct iwl_priv *priv)
1911 {
1912         /* cast away the const for active_rxon in this function */
1913         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1914         struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
1915         int rc = 0;
1916         bool new_assoc =
1917                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
1918
1919         if (!iwl_is_alive(priv))
1920                 return -1;
1921
1922         /* always get timestamp with Rx frame */
1923         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1924
1925         /* select antenna */
1926         staging_rxon->flags &=
1927             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1928         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
1929
1930         rc = iwl_check_rxon_cmd(priv);
1931         if (rc) {
1932                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
1933                 return -EINVAL;
1934         }
1935
1936         /* If we don't need to send a full RXON, we can use
1937          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1938          * and other flags for the current radio configuration. */
1939         if (!iwl_full_rxon_required(priv)) {
1940                 rc = iwl_send_rxon_assoc(priv);
1941                 if (rc) {
1942                         IWL_ERR(priv, "Error setting RXON_ASSOC "
1943                                   "configuration (%d).\n", rc);
1944                         return rc;
1945                 }
1946
1947                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1948
1949                 return 0;
1950         }
1951
1952         /* If we are currently associated and the new config requires
1953          * an RXON_ASSOC and the new config wants the associated mask enabled,
1954          * we must clear the associated from the active configuration
1955          * before we apply the new config */
1956         if (iwl_is_associated(priv) && new_assoc) {
1957                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
1958                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1959
1960                 /*
1961                  * reserved4 and 5 could have been filled by the iwlcore code.
1962                  * Let's clear them before pushing to the 3945.
1963                  */
1964                 active_rxon->reserved4 = 0;
1965                 active_rxon->reserved5 = 0;
1966                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1967                                       sizeof(struct iwl3945_rxon_cmd),
1968                                       &priv->active_rxon);
1969
1970                 /* If the mask clearing failed then we set
1971                  * active_rxon back to what it was previously */
1972                 if (rc) {
1973                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1974                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
1975                                   "configuration (%d).\n", rc);
1976                         return rc;
1977                 }
1978         }
1979
1980         IWL_DEBUG_INFO(priv, "Sending RXON\n"
1981                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1982                        "* channel = %d\n"
1983                        "* bssid = %pM\n",
1984                        (new_assoc ? "" : "out"),
1985                        le16_to_cpu(staging_rxon->channel),
1986                        staging_rxon->bssid_addr);
1987
1988         /*
1989          * reserved4 and 5 could have been filled by the iwlcore code.
1990          * Let's clear them before pushing to the 3945.
1991          */
1992         staging_rxon->reserved4 = 0;
1993         staging_rxon->reserved5 = 0;
1994
1995         iwl_set_rxon_hwcrypto(priv, !iwl3945_mod_params.sw_crypto);
1996
1997         /* Apply the new configuration */
1998         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1999                               sizeof(struct iwl3945_rxon_cmd),
2000                               staging_rxon);
2001         if (rc) {
2002                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
2003                 return rc;
2004         }
2005
2006         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
2007
2008         iwl_clear_stations_table(priv);
2009
2010         /* If we issue a new RXON command which required a tune then we must
2011          * send a new TXPOWER command or we won't be able to Tx any frames */
2012         rc = priv->cfg->ops->lib->send_tx_power(priv);
2013         if (rc) {
2014                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
2015                 return rc;
2016         }
2017
2018         /* Add the broadcast address so we can send broadcast frames */
2019         if (iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL) ==
2020             IWL_INVALID_STATION) {
2021                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
2022                 return -EIO;
2023         }
2024
2025         /* If we have set the ASSOC_MSK and we are in BSS mode then
2026          * add the IWL_AP_ID to the station rate table */
2027         if (iwl_is_associated(priv) &&
2028             (priv->iw_mode == NL80211_IFTYPE_STATION))
2029                 if (iwl_add_station(priv, priv->active_rxon.bssid_addr,
2030                                 true, CMD_SYNC, NULL) == IWL_INVALID_STATION) {
2031                         IWL_ERR(priv, "Error adding AP address for transmit\n");
2032                         return -EIO;
2033                 }
2034
2035         /* Init the hardware's rate fallback order based on the band */
2036         rc = iwl3945_init_hw_rate_table(priv);
2037         if (rc) {
2038                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
2039                 return -EIO;
2040         }
2041
2042         return 0;
2043 }
2044
2045 /* will add 3945 channel switch cmd handling later */
2046 int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel)
2047 {
2048         return 0;
2049 }
2050
2051 /**
2052  * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
2053  *
2054  * -- reset periodic timer
2055  * -- see if temp has changed enough to warrant re-calibration ... if so:
2056  *     -- correct coeffs for temp (can reset temp timer)
2057  *     -- save this temp as "last",
2058  *     -- send new set of gain settings to NIC
2059  * NOTE:  This should continue working, even when we're not associated,
2060  *   so we can keep our internal table of scan powers current. */
2061 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
2062 {
2063         /* This will kick in the "brute force"
2064          * iwl3945_hw_reg_comp_txpower_temp() below */
2065         if (!is_temp_calib_needed(priv))
2066                 goto reschedule;
2067
2068         /* Set up a new set of temp-adjusted TxPowers, send to NIC.
2069          * This is based *only* on current temperature,
2070          * ignoring any previous power measurements */
2071         iwl3945_hw_reg_comp_txpower_temp(priv);
2072
2073  reschedule:
2074         queue_delayed_work(priv->workqueue,
2075                            &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
2076 }
2077
2078 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
2079 {
2080         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2081                                              thermal_periodic.work);
2082
2083         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2084                 return;
2085
2086         mutex_lock(&priv->mutex);
2087         iwl3945_reg_txpower_periodic(priv);
2088         mutex_unlock(&priv->mutex);
2089 }
2090
2091 /**
2092  * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2093  *                                 for the channel.
2094  *
2095  * This function is used when initializing channel-info structs.
2096  *
2097  * NOTE: These channel groups do *NOT* match the bands above!
2098  *       These channel groups are based on factory-tested channels;
2099  *       on A-band, EEPROM's "group frequency" entries represent the top
2100  *       channel in each group 1-4.  Group 5 All B/G channels are in group 0.
2101  */
2102 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
2103                                        const struct iwl_channel_info *ch_info)
2104 {
2105         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2106         struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
2107         u8 group;
2108         u16 group_index = 0;    /* based on factory calib frequencies */
2109         u8 grp_channel;
2110
2111         /* Find the group index for the channel ... don't use index 1(?) */
2112         if (is_channel_a_band(ch_info)) {
2113                 for (group = 1; group < 5; group++) {
2114                         grp_channel = ch_grp[group].group_channel;
2115                         if (ch_info->channel <= grp_channel) {
2116                                 group_index = group;
2117                                 break;
2118                         }
2119                 }
2120                 /* group 4 has a few channels *above* its factory cal freq */
2121                 if (group == 5)
2122                         group_index = 4;
2123         } else
2124                 group_index = 0;        /* 2.4 GHz, group 0 */
2125
2126         IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
2127                         group_index);
2128         return group_index;
2129 }
2130
2131 /**
2132  * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2133  *
2134  * Interpolate to get nominal (i.e. at factory calibration temperature) index
2135  *   into radio/DSP gain settings table for requested power.
2136  */
2137 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
2138                                        s8 requested_power,
2139                                        s32 setting_index, s32 *new_index)
2140 {
2141         const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2142         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2143         s32 index0, index1;
2144         s32 power = 2 * requested_power;
2145         s32 i;
2146         const struct iwl3945_eeprom_txpower_sample *samples;
2147         s32 gains0, gains1;
2148         s32 res;
2149         s32 denominator;
2150
2151         chnl_grp = &eeprom->groups[setting_index];
2152         samples = chnl_grp->samples;
2153         for (i = 0; i < 5; i++) {
2154                 if (power == samples[i].power) {
2155                         *new_index = samples[i].gain_index;
2156                         return 0;
2157                 }
2158         }
2159
2160         if (power > samples[1].power) {
2161                 index0 = 0;
2162                 index1 = 1;
2163         } else if (power > samples[2].power) {
2164                 index0 = 1;
2165                 index1 = 2;
2166         } else if (power > samples[3].power) {
2167                 index0 = 2;
2168                 index1 = 3;
2169         } else {
2170                 index0 = 3;
2171                 index1 = 4;
2172         }
2173
2174         denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2175         if (denominator == 0)
2176                 return -EINVAL;
2177         gains0 = (s32) samples[index0].gain_index * (1 << 19);
2178         gains1 = (s32) samples[index1].gain_index * (1 << 19);
2179         res = gains0 + (gains1 - gains0) *
2180             ((s32) power - (s32) samples[index0].power) / denominator +
2181             (1 << 18);
2182         *new_index = res >> 19;
2183         return 0;
2184 }
2185
2186 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2187 {
2188         u32 i;
2189         s32 rate_index;
2190         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2191         const struct iwl3945_eeprom_txpower_group *group;
2192
2193         IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
2194
2195         for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2196                 s8 *clip_pwrs;  /* table of power levels for each rate */
2197                 s8 satur_pwr;   /* saturation power for each chnl group */
2198                 group = &eeprom->groups[i];
2199
2200                 /* sanity check on factory saturation power value */
2201                 if (group->saturation_power < 40) {
2202                         IWL_WARN(priv, "Error: saturation power is %d, "
2203                                     "less than minimum expected 40\n",
2204                                     group->saturation_power);
2205                         return;
2206                 }
2207
2208                 /*
2209                  * Derive requested power levels for each rate, based on
2210                  *   hardware capabilities (saturation power for band).
2211                  * Basic value is 3dB down from saturation, with further
2212                  *   power reductions for highest 3 data rates.  These
2213                  *   backoffs provide headroom for high rate modulation
2214                  *   power peaks, without too much distortion (clipping).
2215                  */
2216                 /* we'll fill in this array with h/w max power levels */
2217                 clip_pwrs = (s8 *) priv->clip39_groups[i].clip_powers;
2218
2219                 /* divide factory saturation power by 2 to find -3dB level */
2220                 satur_pwr = (s8) (group->saturation_power >> 1);
2221
2222                 /* fill in channel group's nominal powers for each rate */
2223                 for (rate_index = 0;
2224                      rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
2225                         switch (rate_index) {
2226                         case IWL_RATE_36M_INDEX_TABLE:
2227                                 if (i == 0)     /* B/G */
2228                                         *clip_pwrs = satur_pwr;
2229                                 else    /* A */
2230                                         *clip_pwrs = satur_pwr - 5;
2231                                 break;
2232                         case IWL_RATE_48M_INDEX_TABLE:
2233                                 if (i == 0)
2234                                         *clip_pwrs = satur_pwr - 7;
2235                                 else
2236                                         *clip_pwrs = satur_pwr - 10;
2237                                 break;
2238                         case IWL_RATE_54M_INDEX_TABLE:
2239                                 if (i == 0)
2240                                         *clip_pwrs = satur_pwr - 9;
2241                                 else
2242                                         *clip_pwrs = satur_pwr - 12;
2243                                 break;
2244                         default:
2245                                 *clip_pwrs = satur_pwr;
2246                                 break;
2247                         }
2248                 }
2249         }
2250 }
2251
2252 /**
2253  * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2254  *
2255  * Second pass (during init) to set up priv->channel_info
2256  *
2257  * Set up Tx-power settings in our channel info database for each VALID
2258  * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2259  * and current temperature.
2260  *
2261  * Since this is based on current temperature (at init time), these values may
2262  * not be valid for very long, but it gives us a starting/default point,
2263  * and allows us to active (i.e. using Tx) scan.
2264  *
2265  * This does *not* write values to NIC, just sets up our internal table.
2266  */
2267 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2268 {
2269         struct iwl_channel_info *ch_info = NULL;
2270         struct iwl3945_channel_power_info *pwr_info;
2271         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2272         int delta_index;
2273         u8 rate_index;
2274         u8 scan_tbl_index;
2275         const s8 *clip_pwrs;    /* array of power levels for each rate */
2276         u8 gain, dsp_atten;
2277         s8 power;
2278         u8 pwr_index, base_pwr_index, a_band;
2279         u8 i;
2280         int temperature;
2281
2282         /* save temperature reference,
2283          *   so we can determine next time to calibrate */
2284         temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2285         priv->last_temperature = temperature;
2286
2287         iwl3945_hw_reg_init_channel_groups(priv);
2288
2289         /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2290         for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2291              i++, ch_info++) {
2292                 a_band = is_channel_a_band(ch_info);
2293                 if (!is_channel_valid(ch_info))
2294                         continue;
2295
2296                 /* find this channel's channel group (*not* "band") index */
2297                 ch_info->group_index =
2298                         iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2299
2300                 /* Get this chnlgrp's rate->max/clip-powers table */
2301                 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
2302
2303                 /* calculate power index *adjustment* value according to
2304                  *  diff between current temperature and factory temperature */
2305                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2306                                 eeprom->groups[ch_info->group_index].
2307                                 temperature);
2308
2309                 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2310                                 ch_info->channel, delta_index, temperature +
2311                                 IWL_TEMP_CONVERT);
2312
2313                 /* set tx power value for all OFDM rates */
2314                 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2315                      rate_index++) {
2316                         s32 uninitialized_var(power_idx);
2317                         int rc;
2318
2319                         /* use channel group's clip-power table,
2320                          *   but don't exceed channel's max power */
2321                         s8 pwr = min(ch_info->max_power_avg,
2322                                      clip_pwrs[rate_index]);
2323
2324                         pwr_info = &ch_info->power_info[rate_index];
2325
2326                         /* get base (i.e. at factory-measured temperature)
2327                          *    power table index for this rate's power */
2328                         rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2329                                                          ch_info->group_index,
2330                                                          &power_idx);
2331                         if (rc) {
2332                                 IWL_ERR(priv, "Invalid power index\n");
2333                                 return rc;
2334                         }
2335                         pwr_info->base_power_index = (u8) power_idx;
2336
2337                         /* temperature compensate */
2338                         power_idx += delta_index;
2339
2340                         /* stay within range of gain table */
2341                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2342
2343                         /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2344                         pwr_info->requested_power = pwr;
2345                         pwr_info->power_table_index = (u8) power_idx;
2346                         pwr_info->tpc.tx_gain =
2347                             power_gain_table[a_band][power_idx].tx_gain;
2348                         pwr_info->tpc.dsp_atten =
2349                             power_gain_table[a_band][power_idx].dsp_atten;
2350                 }
2351
2352                 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2353                 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2354                 power = pwr_info->requested_power +
2355                         IWL_CCK_FROM_OFDM_POWER_DIFF;
2356                 pwr_index = pwr_info->power_table_index +
2357                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2358                 base_pwr_index = pwr_info->base_power_index +
2359                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2360
2361                 /* stay within table range */
2362                 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2363                 gain = power_gain_table[a_band][pwr_index].tx_gain;
2364                 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2365
2366                 /* fill each CCK rate's iwl3945_channel_power_info structure
2367                  * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
2368                  * NOTE:  CCK rates start at end of OFDM rates! */
2369                 for (rate_index = 0;
2370                      rate_index < IWL_CCK_RATES; rate_index++) {
2371                         pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2372                         pwr_info->requested_power = power;
2373                         pwr_info->power_table_index = pwr_index;
2374                         pwr_info->base_power_index = base_pwr_index;
2375                         pwr_info->tpc.tx_gain = gain;
2376                         pwr_info->tpc.dsp_atten = dsp_atten;
2377                 }
2378
2379                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2380                 for (scan_tbl_index = 0;
2381                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2382                         s32 actual_index = (scan_tbl_index == 0) ?
2383                                 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2384                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2385                                 actual_index, clip_pwrs, ch_info, a_band);
2386                 }
2387         }
2388
2389         return 0;
2390 }
2391
2392 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2393 {
2394         int rc;
2395
2396         iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2397         rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2398                         FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2399         if (rc < 0)
2400                 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2401
2402         return 0;
2403 }
2404
2405 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2406 {
2407         int txq_id = txq->q.id;
2408
2409         struct iwl3945_shared *shared_data = priv->shared_virt;
2410
2411         shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2412
2413         iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2414         iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2415
2416         iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2417                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2418                 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2419                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2420                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2421                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2422
2423         /* fake read to flush all prev. writes */
2424         iwl_read32(priv, FH39_TSSR_CBB_BASE);
2425
2426         return 0;
2427 }
2428
2429 /*
2430  * HCMD utils
2431  */
2432 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2433 {
2434         switch (cmd_id) {
2435         case REPLY_RXON:
2436                 return sizeof(struct iwl3945_rxon_cmd);
2437         case POWER_TABLE_CMD:
2438                 return sizeof(struct iwl3945_powertable_cmd);
2439         default:
2440                 return len;
2441         }
2442 }
2443
2444
2445 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2446 {
2447         struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
2448         addsta->mode = cmd->mode;
2449         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
2450         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
2451         addsta->station_flags = cmd->station_flags;
2452         addsta->station_flags_msk = cmd->station_flags_msk;
2453         addsta->tid_disable_tx = cpu_to_le16(0);
2454         addsta->rate_n_flags = cmd->rate_n_flags;
2455         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2456         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2457         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2458
2459         return (u16)sizeof(struct iwl3945_addsta_cmd);
2460 }
2461
2462
2463 /**
2464  * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2465  */
2466 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2467 {
2468         int rc, i, index, prev_index;
2469         struct iwl3945_rate_scaling_cmd rate_cmd = {
2470                 .reserved = {0, 0, 0},
2471         };
2472         struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2473
2474         for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2475                 index = iwl3945_rates[i].table_rs_index;
2476
2477                 table[index].rate_n_flags =
2478                         iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2479                 table[index].try_cnt = priv->retry_rate;
2480                 prev_index = iwl3945_get_prev_ieee_rate(i);
2481                 table[index].next_rate_index =
2482                                 iwl3945_rates[prev_index].table_rs_index;
2483         }
2484
2485         switch (priv->band) {
2486         case IEEE80211_BAND_5GHZ:
2487                 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2488                 /* If one of the following CCK rates is used,
2489                  * have it fall back to the 6M OFDM rate */
2490                 for (i = IWL_RATE_1M_INDEX_TABLE;
2491                         i <= IWL_RATE_11M_INDEX_TABLE; i++)
2492                         table[i].next_rate_index =
2493                           iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2494
2495                 /* Don't fall back to CCK rates */
2496                 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2497                                                 IWL_RATE_9M_INDEX_TABLE;
2498
2499                 /* Don't drop out of OFDM rates */
2500                 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2501                     iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2502                 break;
2503
2504         case IEEE80211_BAND_2GHZ:
2505                 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2506                 /* If an OFDM rate is used, have it fall back to the
2507                  * 1M CCK rates */
2508
2509                 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2510                     iwl_is_associated(priv)) {
2511
2512                         index = IWL_FIRST_CCK_RATE;
2513                         for (i = IWL_RATE_6M_INDEX_TABLE;
2514                              i <= IWL_RATE_54M_INDEX_TABLE; i++)
2515                                 table[i].next_rate_index =
2516                                         iwl3945_rates[index].table_rs_index;
2517
2518                         index = IWL_RATE_11M_INDEX_TABLE;
2519                         /* CCK shouldn't fall back to OFDM... */
2520                         table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2521                 }
2522                 break;
2523
2524         default:
2525                 WARN_ON(1);
2526                 break;
2527         }
2528
2529         /* Update the rate scaling for control frame Tx */
2530         rate_cmd.table_id = 0;
2531         rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2532                               &rate_cmd);
2533         if (rc)
2534                 return rc;
2535
2536         /* Update the rate scaling for data frame Tx */
2537         rate_cmd.table_id = 1;
2538         return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2539                                 &rate_cmd);
2540 }
2541
2542 /* Called when initializing driver */
2543 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2544 {
2545         memset((void *)&priv->hw_params, 0,
2546                sizeof(struct iwl_hw_params));
2547
2548         priv->shared_virt =
2549             pci_alloc_consistent(priv->pci_dev,
2550                                  sizeof(struct iwl3945_shared),
2551                                  &priv->shared_phys);
2552
2553         if (!priv->shared_virt) {
2554                 IWL_ERR(priv, "failed to allocate pci memory\n");
2555                 mutex_unlock(&priv->mutex);
2556                 return -ENOMEM;
2557         }
2558
2559         /* Assign number of Usable TX queues */
2560         priv->hw_params.max_txq_num = IWL39_NUM_QUEUES;
2561
2562         priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2563         priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_3K;
2564         priv->hw_params.max_pkt_size = 2342;
2565         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2566         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2567         priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2568         priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID;
2569
2570         priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2571         priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
2572
2573         return 0;
2574 }
2575
2576 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2577                           struct iwl3945_frame *frame, u8 rate)
2578 {
2579         struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2580         unsigned int frame_size;
2581
2582         tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2583         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2584
2585         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2586         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2587
2588         frame_size = iwl3945_fill_beacon_frame(priv,
2589                                 tx_beacon_cmd->frame,
2590                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2591
2592         BUG_ON(frame_size > MAX_MPDU_SIZE);
2593         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2594
2595         tx_beacon_cmd->tx.rate = rate;
2596         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2597                                       TX_CMD_FLG_TSF_MSK);
2598
2599         /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2600         tx_beacon_cmd->tx.supp_rates[0] =
2601                 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2602
2603         tx_beacon_cmd->tx.supp_rates[1] =
2604                 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2605
2606         return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2607 }
2608
2609 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2610 {
2611         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2612         priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2613 }
2614
2615 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2616 {
2617         INIT_DELAYED_WORK(&priv->thermal_periodic,
2618                           iwl3945_bg_reg_txpower_periodic);
2619 }
2620
2621 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2622 {
2623         cancel_delayed_work(&priv->thermal_periodic);
2624 }
2625
2626 /* check contents of special bootstrap uCode SRAM */
2627 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2628  {
2629         __le32 *image = priv->ucode_boot.v_addr;
2630         u32 len = priv->ucode_boot.len;
2631         u32 reg;
2632         u32 val;
2633
2634         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2635
2636         /* verify BSM SRAM contents */
2637         val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2638         for (reg = BSM_SRAM_LOWER_BOUND;
2639              reg < BSM_SRAM_LOWER_BOUND + len;
2640              reg += sizeof(u32), image++) {
2641                 val = iwl_read_prph(priv, reg);
2642                 if (val != le32_to_cpu(*image)) {
2643                         IWL_ERR(priv, "BSM uCode verification failed at "
2644                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2645                                   BSM_SRAM_LOWER_BOUND,
2646                                   reg - BSM_SRAM_LOWER_BOUND, len,
2647                                   val, le32_to_cpu(*image));
2648                         return -EIO;
2649                 }
2650         }
2651
2652         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2653
2654         return 0;
2655 }
2656
2657
2658 /******************************************************************************
2659  *
2660  * EEPROM related functions
2661  *
2662  ******************************************************************************/
2663
2664 /*
2665  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2666  * embedded controller) as EEPROM reader; each read is a series of pulses
2667  * to/from the EEPROM chip, not a single event, so even reads could conflict
2668  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
2669  * simply claims ownership, which should be safe when this function is called
2670  * (i.e. before loading uCode!).
2671  */
2672 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2673 {
2674         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2675         return 0;
2676 }
2677
2678
2679 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2680 {
2681         return;
2682 }
2683
2684  /**
2685   * iwl3945_load_bsm - Load bootstrap instructions
2686   *
2687   * BSM operation:
2688   *
2689   * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2690   * in special SRAM that does not power down during RFKILL.  When powering back
2691   * up after power-saving sleeps (or during initial uCode load), the BSM loads
2692   * the bootstrap program into the on-board processor, and starts it.
2693   *
2694   * The bootstrap program loads (via DMA) instructions and data for a new
2695   * program from host DRAM locations indicated by the host driver in the
2696   * BSM_DRAM_* registers.  Once the new program is loaded, it starts
2697   * automatically.
2698   *
2699   * When initializing the NIC, the host driver points the BSM to the
2700   * "initialize" uCode image.  This uCode sets up some internal data, then
2701   * notifies host via "initialize alive" that it is complete.
2702   *
2703   * The host then replaces the BSM_DRAM_* pointer values to point to the
2704   * normal runtime uCode instructions and a backup uCode data cache buffer
2705   * (filled initially with starting data values for the on-board processor),
2706   * then triggers the "initialize" uCode to load and launch the runtime uCode,
2707   * which begins normal operation.
2708   *
2709   * When doing a power-save shutdown, runtime uCode saves data SRAM into
2710   * the backup data cache in DRAM before SRAM is powered down.
2711   *
2712   * When powering back up, the BSM loads the bootstrap program.  This reloads
2713   * the runtime uCode instructions and the backup data cache into SRAM,
2714   * and re-launches the runtime uCode from where it left off.
2715   */
2716 static int iwl3945_load_bsm(struct iwl_priv *priv)
2717 {
2718         __le32 *image = priv->ucode_boot.v_addr;
2719         u32 len = priv->ucode_boot.len;
2720         dma_addr_t pinst;
2721         dma_addr_t pdata;
2722         u32 inst_len;
2723         u32 data_len;
2724         int rc;
2725         int i;
2726         u32 done;
2727         u32 reg_offset;
2728
2729         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2730
2731         /* make sure bootstrap program is no larger than BSM's SRAM size */
2732         if (len > IWL39_MAX_BSM_SIZE)
2733                 return -EINVAL;
2734
2735         /* Tell bootstrap uCode where to find the "Initialize" uCode
2736         *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2737         * NOTE:  iwl3945_initialize_alive_start() will replace these values,
2738         *        after the "initialize" uCode has run, to point to
2739         *        runtime/protocol instructions and backup data cache. */
2740         pinst = priv->ucode_init.p_addr;
2741         pdata = priv->ucode_init_data.p_addr;
2742         inst_len = priv->ucode_init.len;
2743         data_len = priv->ucode_init_data.len;
2744
2745         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2746         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2747         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2748         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2749
2750         /* Fill BSM memory with bootstrap instructions */
2751         for (reg_offset = BSM_SRAM_LOWER_BOUND;
2752              reg_offset < BSM_SRAM_LOWER_BOUND + len;
2753              reg_offset += sizeof(u32), image++)
2754                 _iwl_write_prph(priv, reg_offset,
2755                                           le32_to_cpu(*image));
2756
2757         rc = iwl3945_verify_bsm(priv);
2758         if (rc)
2759                 return rc;
2760
2761         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2762         iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2763         iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2764                                  IWL39_RTC_INST_LOWER_BOUND);
2765         iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2766
2767         /* Load bootstrap code into instruction SRAM now,
2768          *   to prepare to load "initialize" uCode */
2769         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2770                 BSM_WR_CTRL_REG_BIT_START);
2771
2772         /* Wait for load of bootstrap uCode to finish */
2773         for (i = 0; i < 100; i++) {
2774                 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2775                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2776                         break;
2777                 udelay(10);
2778         }
2779         if (i < 100)
2780                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2781         else {
2782                 IWL_ERR(priv, "BSM write did not complete!\n");
2783                 return -EIO;
2784         }
2785
2786         /* Enable future boot loads whenever power management unit triggers it
2787          *   (e.g. when powering back up after power-save shutdown) */
2788         iwl_write_prph(priv, BSM_WR_CTRL_REG,
2789                 BSM_WR_CTRL_REG_BIT_START_EN);
2790
2791         return 0;
2792 }
2793
2794 #define IWL3945_UCODE_GET(item)                                         \
2795 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode,\
2796                                     u32 api_ver)                        \
2797 {                                                                       \
2798         return le32_to_cpu(ucode->u.v1.item);                           \
2799 }
2800
2801 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2802 {
2803         return UCODE_HEADER_SIZE(1);
2804 }
2805 static u32 iwl3945_ucode_get_build(const struct iwl_ucode_header *ucode,
2806                                    u32 api_ver)
2807 {
2808         return 0;
2809 }
2810 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode,
2811                                   u32 api_ver)
2812 {
2813         return (u8 *) ucode->u.v1.data;
2814 }
2815
2816 IWL3945_UCODE_GET(inst_size);
2817 IWL3945_UCODE_GET(data_size);
2818 IWL3945_UCODE_GET(init_size);
2819 IWL3945_UCODE_GET(init_data_size);
2820 IWL3945_UCODE_GET(boot_size);
2821
2822 static struct iwl_hcmd_ops iwl3945_hcmd = {
2823         .rxon_assoc = iwl3945_send_rxon_assoc,
2824         .commit_rxon = iwl3945_commit_rxon,
2825 };
2826
2827 static struct iwl_ucode_ops iwl3945_ucode = {
2828         .get_header_size = iwl3945_ucode_get_header_size,
2829         .get_build = iwl3945_ucode_get_build,
2830         .get_inst_size = iwl3945_ucode_get_inst_size,
2831         .get_data_size = iwl3945_ucode_get_data_size,
2832         .get_init_size = iwl3945_ucode_get_init_size,
2833         .get_init_data_size = iwl3945_ucode_get_init_data_size,
2834         .get_boot_size = iwl3945_ucode_get_boot_size,
2835         .get_data = iwl3945_ucode_get_data,
2836 };
2837
2838 static struct iwl_lib_ops iwl3945_lib = {
2839         .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2840         .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2841         .txq_init = iwl3945_hw_tx_queue_init,
2842         .load_ucode = iwl3945_load_bsm,
2843         .apm_ops = {
2844                 .init = iwl3945_apm_init,
2845                 .reset = iwl3945_apm_reset,
2846                 .stop = iwl3945_apm_stop,
2847                 .config = iwl3945_nic_config,
2848                 .set_pwr_src = iwl3945_set_pwr_src,
2849         },
2850         .eeprom_ops = {
2851                 .regulatory_bands = {
2852                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2853                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2854                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2855                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2856                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2857                         EEPROM_REGULATORY_BAND_NO_HT40,
2858                         EEPROM_REGULATORY_BAND_NO_HT40,
2859                 },
2860                 .verify_signature  = iwlcore_eeprom_verify_signature,
2861                 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2862                 .release_semaphore = iwl3945_eeprom_release_semaphore,
2863                 .query_addr = iwlcore_eeprom_query_addr,
2864         },
2865         .send_tx_power  = iwl3945_send_tx_power,
2866         .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2867         .post_associate = iwl3945_post_associate,
2868         .isr = iwl_isr_legacy,
2869         .config_ap = iwl3945_config_ap,
2870 };
2871
2872 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2873         .get_hcmd_size = iwl3945_get_hcmd_size,
2874         .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2875 };
2876
2877 static struct iwl_ops iwl3945_ops = {
2878         .ucode = &iwl3945_ucode,
2879         .lib = &iwl3945_lib,
2880         .hcmd = &iwl3945_hcmd,
2881         .utils = &iwl3945_hcmd_utils,
2882 };
2883
2884 static struct iwl_cfg iwl3945_bg_cfg = {
2885         .name = "3945BG",
2886         .fw_name_pre = IWL3945_FW_PRE,
2887         .ucode_api_max = IWL3945_UCODE_API_MAX,
2888         .ucode_api_min = IWL3945_UCODE_API_MIN,
2889         .sku = IWL_SKU_G,
2890         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2891         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2892         .ops = &iwl3945_ops,
2893         .mod_params = &iwl3945_mod_params,
2894         .use_isr_legacy = true
2895 };
2896
2897 static struct iwl_cfg iwl3945_abg_cfg = {
2898         .name = "3945ABG",
2899         .fw_name_pre = IWL3945_FW_PRE,
2900         .ucode_api_max = IWL3945_UCODE_API_MAX,
2901         .ucode_api_min = IWL3945_UCODE_API_MIN,
2902         .sku = IWL_SKU_A|IWL_SKU_G,
2903         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2904         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2905         .ops = &iwl3945_ops,
2906         .mod_params = &iwl3945_mod_params,
2907         .use_isr_legacy = true
2908 };
2909
2910 struct pci_device_id iwl3945_hw_card_ids[] = {
2911         {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2912         {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2913         {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2914         {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2915         {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2916         {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2917         {0}
2918 };
2919
2920 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);