Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[pandora-kernel.git] / drivers / net / wireless / iwlegacy / iwl-3945.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2011 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/slab.h>
31 #include <linux/pci.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/wireless.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <asm/unaligned.h>
41 #include <net/mac80211.h>
42
43 #include "iwl-fh.h"
44 #include "iwl-3945-fh.h"
45 #include "iwl-commands.h"
46 #include "iwl-sta.h"
47 #include "iwl-3945.h"
48 #include "iwl-eeprom.h"
49 #include "iwl-core.h"
50 #include "iwl-helpers.h"
51 #include "iwl-led.h"
52 #include "iwl-3945-led.h"
53 #include "iwl-3945-debugfs.h"
54
55 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np)    \
56         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,   \
57                                     IWL_RATE_##r##M_IEEE,   \
58                                     IWL_RATE_##ip##M_INDEX, \
59                                     IWL_RATE_##in##M_INDEX, \
60                                     IWL_RATE_##rp##M_INDEX, \
61                                     IWL_RATE_##rn##M_INDEX, \
62                                     IWL_RATE_##pp##M_INDEX, \
63                                     IWL_RATE_##np##M_INDEX, \
64                                     IWL_RATE_##r##M_INDEX_TABLE, \
65                                     IWL_RATE_##ip##M_INDEX_TABLE }
66
67 /*
68  * Parameter order:
69  *   rate, prev rate, next rate, prev tgg rate, next tgg rate
70  *
71  * If there isn't a valid next or previous rate then INV is used which
72  * maps to IWL_RATE_INVALID
73  *
74  */
75 const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
76         IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2),    /*  1mbps */
77         IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5),          /*  2mbps */
78         IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
79         IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18),      /* 11mbps */
80         IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
81         IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11),       /*  9mbps */
82         IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
83         IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
84         IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
85         IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
86         IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
87         IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
88 };
89
90 static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
91 {
92         u8 rate = iwl3945_rates[rate_index].prev_ieee;
93
94         if (rate == IWL_RATE_INVALID)
95                 rate = rate_index;
96         return rate;
97 }
98
99 /* 1 = enable the iwl3945_disable_events() function */
100 #define IWL_EVT_DISABLE (0)
101 #define IWL_EVT_DISABLE_SIZE (1532/32)
102
103 /**
104  * iwl3945_disable_events - Disable selected events in uCode event log
105  *
106  * Disable an event by writing "1"s into "disable"
107  *   bitmap in SRAM.  Bit position corresponds to Event # (id/type).
108  *   Default values of 0 enable uCode events to be logged.
109  * Use for only special debugging.  This function is just a placeholder as-is,
110  *   you'll need to provide the special bits! ...
111  *   ... and set IWL_EVT_DISABLE to 1. */
112 void iwl3945_disable_events(struct iwl_priv *priv)
113 {
114         int i;
115         u32 base;               /* SRAM address of event log header */
116         u32 disable_ptr;        /* SRAM address of event-disable bitmap array */
117         u32 array_size;         /* # of u32 entries in array */
118         static const u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
119                 0x00000000,     /*   31 -    0  Event id numbers */
120                 0x00000000,     /*   63 -   32 */
121                 0x00000000,     /*   95 -   64 */
122                 0x00000000,     /*  127 -   96 */
123                 0x00000000,     /*  159 -  128 */
124                 0x00000000,     /*  191 -  160 */
125                 0x00000000,     /*  223 -  192 */
126                 0x00000000,     /*  255 -  224 */
127                 0x00000000,     /*  287 -  256 */
128                 0x00000000,     /*  319 -  288 */
129                 0x00000000,     /*  351 -  320 */
130                 0x00000000,     /*  383 -  352 */
131                 0x00000000,     /*  415 -  384 */
132                 0x00000000,     /*  447 -  416 */
133                 0x00000000,     /*  479 -  448 */
134                 0x00000000,     /*  511 -  480 */
135                 0x00000000,     /*  543 -  512 */
136                 0x00000000,     /*  575 -  544 */
137                 0x00000000,     /*  607 -  576 */
138                 0x00000000,     /*  639 -  608 */
139                 0x00000000,     /*  671 -  640 */
140                 0x00000000,     /*  703 -  672 */
141                 0x00000000,     /*  735 -  704 */
142                 0x00000000,     /*  767 -  736 */
143                 0x00000000,     /*  799 -  768 */
144                 0x00000000,     /*  831 -  800 */
145                 0x00000000,     /*  863 -  832 */
146                 0x00000000,     /*  895 -  864 */
147                 0x00000000,     /*  927 -  896 */
148                 0x00000000,     /*  959 -  928 */
149                 0x00000000,     /*  991 -  960 */
150                 0x00000000,     /* 1023 -  992 */
151                 0x00000000,     /* 1055 - 1024 */
152                 0x00000000,     /* 1087 - 1056 */
153                 0x00000000,     /* 1119 - 1088 */
154                 0x00000000,     /* 1151 - 1120 */
155                 0x00000000,     /* 1183 - 1152 */
156                 0x00000000,     /* 1215 - 1184 */
157                 0x00000000,     /* 1247 - 1216 */
158                 0x00000000,     /* 1279 - 1248 */
159                 0x00000000,     /* 1311 - 1280 */
160                 0x00000000,     /* 1343 - 1312 */
161                 0x00000000,     /* 1375 - 1344 */
162                 0x00000000,     /* 1407 - 1376 */
163                 0x00000000,     /* 1439 - 1408 */
164                 0x00000000,     /* 1471 - 1440 */
165                 0x00000000,     /* 1503 - 1472 */
166         };
167
168         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
169         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
170                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
171                 return;
172         }
173
174         disable_ptr = iwl_legacy_read_targ_mem(priv, base + (4 * sizeof(u32)));
175         array_size = iwl_legacy_read_targ_mem(priv, base + (5 * sizeof(u32)));
176
177         if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
178                 IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
179                                disable_ptr);
180                 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
181                         iwl_legacy_write_targ_mem(priv,
182                                            disable_ptr + (i * sizeof(u32)),
183                                            evt_disable[i]);
184
185         } else {
186                 IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
187                 IWL_DEBUG_INFO(priv, "  by writing \"1\"s into disable bitmap\n");
188                 IWL_DEBUG_INFO(priv, "  in SRAM at 0x%x, size %d u32s\n",
189                                disable_ptr, array_size);
190         }
191
192 }
193
194 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
195 {
196         int idx;
197
198         for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++)
199                 if (iwl3945_rates[idx].plcp == plcp)
200                         return idx;
201         return -1;
202 }
203
204 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
205 #define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
206
207 static const char *iwl3945_get_tx_fail_reason(u32 status)
208 {
209         switch (status & TX_STATUS_MSK) {
210         case TX_3945_STATUS_SUCCESS:
211                 return "SUCCESS";
212                 TX_STATUS_ENTRY(SHORT_LIMIT);
213                 TX_STATUS_ENTRY(LONG_LIMIT);
214                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
215                 TX_STATUS_ENTRY(MGMNT_ABORT);
216                 TX_STATUS_ENTRY(NEXT_FRAG);
217                 TX_STATUS_ENTRY(LIFE_EXPIRE);
218                 TX_STATUS_ENTRY(DEST_PS);
219                 TX_STATUS_ENTRY(ABORTED);
220                 TX_STATUS_ENTRY(BT_RETRY);
221                 TX_STATUS_ENTRY(STA_INVALID);
222                 TX_STATUS_ENTRY(FRAG_DROPPED);
223                 TX_STATUS_ENTRY(TID_DISABLE);
224                 TX_STATUS_ENTRY(FRAME_FLUSHED);
225                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
226                 TX_STATUS_ENTRY(TX_LOCKED);
227                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
228         }
229
230         return "UNKNOWN";
231 }
232 #else
233 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
234 {
235         return "";
236 }
237 #endif
238
239 /*
240  * get ieee prev rate from rate scale table.
241  * for A and B mode we need to overright prev
242  * value
243  */
244 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
245 {
246         int next_rate = iwl3945_get_prev_ieee_rate(rate);
247
248         switch (priv->band) {
249         case IEEE80211_BAND_5GHZ:
250                 if (rate == IWL_RATE_12M_INDEX)
251                         next_rate = IWL_RATE_9M_INDEX;
252                 else if (rate == IWL_RATE_6M_INDEX)
253                         next_rate = IWL_RATE_6M_INDEX;
254                 break;
255         case IEEE80211_BAND_2GHZ:
256                 if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
257                     iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
258                         if (rate == IWL_RATE_11M_INDEX)
259                                 next_rate = IWL_RATE_5M_INDEX;
260                 }
261                 break;
262
263         default:
264                 break;
265         }
266
267         return next_rate;
268 }
269
270
271 /**
272  * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
273  *
274  * When FW advances 'R' index, all entries between old and new 'R' index
275  * need to be reclaimed. As result, some free space forms. If there is
276  * enough free space (> low mark), wake the stack that feeds us.
277  */
278 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
279                                      int txq_id, int index)
280 {
281         struct iwl_tx_queue *txq = &priv->txq[txq_id];
282         struct iwl_queue *q = &txq->q;
283         struct iwl_tx_info *tx_info;
284
285         BUG_ON(txq_id == IWL39_CMD_QUEUE_NUM);
286
287         for (index = iwl_legacy_queue_inc_wrap(index, q->n_bd);
288                 q->read_ptr != index;
289                 q->read_ptr = iwl_legacy_queue_inc_wrap(q->read_ptr, q->n_bd)) {
290
291                 tx_info = &txq->txb[txq->q.read_ptr];
292                 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb);
293                 tx_info->skb = NULL;
294                 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
295         }
296
297         if (iwl_legacy_queue_space(q) > q->low_mark && (txq_id >= 0) &&
298                         (txq_id != IWL39_CMD_QUEUE_NUM) &&
299                         priv->mac80211_registered)
300                 iwl_legacy_wake_queue(priv, txq);
301 }
302
303 /**
304  * iwl3945_rx_reply_tx - Handle Tx response
305  */
306 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
307                                 struct iwl_rx_mem_buffer *rxb)
308 {
309         struct iwl_rx_packet *pkt = rxb_addr(rxb);
310         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
311         int txq_id = SEQ_TO_QUEUE(sequence);
312         int index = SEQ_TO_INDEX(sequence);
313         struct iwl_tx_queue *txq = &priv->txq[txq_id];
314         struct ieee80211_tx_info *info;
315         struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
316         u32  status = le32_to_cpu(tx_resp->status);
317         int rate_idx;
318         int fail;
319
320         if ((index >= txq->q.n_bd) || (iwl_legacy_queue_used(&txq->q, index) == 0)) {
321                 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
322                           "is out of range [0-%d] %d %d\n", txq_id,
323                           index, txq->q.n_bd, txq->q.write_ptr,
324                           txq->q.read_ptr);
325                 return;
326         }
327
328         txq->time_stamp = jiffies;
329         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
330         ieee80211_tx_info_clear_status(info);
331
332         /* Fill the MRR chain with some info about on-chip retransmissions */
333         rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
334         if (info->band == IEEE80211_BAND_5GHZ)
335                 rate_idx -= IWL_FIRST_OFDM_RATE;
336
337         fail = tx_resp->failure_frame;
338
339         info->status.rates[0].idx = rate_idx;
340         info->status.rates[0].count = fail + 1; /* add final attempt */
341
342         /* tx_status->rts_retry_count = tx_resp->failure_rts; */
343         info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
344                                 IEEE80211_TX_STAT_ACK : 0;
345
346         IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
347                         txq_id, iwl3945_get_tx_fail_reason(status), status,
348                         tx_resp->rate, tx_resp->failure_frame);
349
350         IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
351         iwl3945_tx_queue_reclaim(priv, txq_id, index);
352
353         if (status & TX_ABORT_REQUIRED_MSK)
354                 IWL_ERR(priv, "TODO:  Implement Tx ABORT REQUIRED!!!\n");
355 }
356
357
358
359 /*****************************************************************************
360  *
361  * Intel PRO/Wireless 3945ABG/BG Network Connection
362  *
363  *  RX handler implementations
364  *
365  *****************************************************************************/
366 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
367 static void iwl3945_accumulative_statistics(struct iwl_priv *priv,
368                                             __le32 *stats)
369 {
370         int i;
371         __le32 *prev_stats;
372         u32 *accum_stats;
373         u32 *delta, *max_delta;
374
375         prev_stats = (__le32 *)&priv->_3945.statistics;
376         accum_stats = (u32 *)&priv->_3945.accum_statistics;
377         delta = (u32 *)&priv->_3945.delta_statistics;
378         max_delta = (u32 *)&priv->_3945.max_delta;
379
380         for (i = sizeof(__le32); i < sizeof(struct iwl3945_notif_statistics);
381              i += sizeof(__le32), stats++, prev_stats++, delta++,
382              max_delta++, accum_stats++) {
383                 if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
384                         *delta = (le32_to_cpu(*stats) -
385                                 le32_to_cpu(*prev_stats));
386                         *accum_stats += *delta;
387                         if (*delta > *max_delta)
388                                 *max_delta = *delta;
389                 }
390         }
391
392         /* reset accumulative statistics for "no-counter" type statistics */
393         priv->_3945.accum_statistics.general.temperature =
394                 priv->_3945.statistics.general.temperature;
395         priv->_3945.accum_statistics.general.ttl_timestamp =
396                 priv->_3945.statistics.general.ttl_timestamp;
397 }
398 #endif
399
400 void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
401                 struct iwl_rx_mem_buffer *rxb)
402 {
403         struct iwl_rx_packet *pkt = rxb_addr(rxb);
404
405         IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
406                      (int)sizeof(struct iwl3945_notif_statistics),
407                      le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
408 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
409         iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw);
410 #endif
411         iwl_legacy_recover_from_statistics(priv, pkt);
412
413         memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics));
414 }
415
416 void iwl3945_reply_statistics(struct iwl_priv *priv,
417                               struct iwl_rx_mem_buffer *rxb)
418 {
419         struct iwl_rx_packet *pkt = rxb_addr(rxb);
420         __le32 *flag = (__le32 *)&pkt->u.raw;
421
422         if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) {
423 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
424                 memset(&priv->_3945.accum_statistics, 0,
425                         sizeof(struct iwl3945_notif_statistics));
426                 memset(&priv->_3945.delta_statistics, 0,
427                         sizeof(struct iwl3945_notif_statistics));
428                 memset(&priv->_3945.max_delta, 0,
429                         sizeof(struct iwl3945_notif_statistics));
430 #endif
431                 IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
432         }
433         iwl3945_hw_rx_statistics(priv, rxb);
434 }
435
436
437 /******************************************************************************
438  *
439  * Misc. internal state and helper functions
440  *
441  ******************************************************************************/
442
443 /* This is necessary only for a number of statistics, see the caller. */
444 static int iwl3945_is_network_packet(struct iwl_priv *priv,
445                 struct ieee80211_hdr *header)
446 {
447         /* Filter incoming packets to determine if they are targeted toward
448          * this network, discarding packets coming from ourselves */
449         switch (priv->iw_mode) {
450         case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source    | BSSID */
451                 /* packets to our IBSS update information */
452                 return !compare_ether_addr(header->addr3, priv->bssid);
453         case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
454                 /* packets to our IBSS update information */
455                 return !compare_ether_addr(header->addr2, priv->bssid);
456         default:
457                 return 1;
458         }
459 }
460
461 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
462                                    struct iwl_rx_mem_buffer *rxb,
463                                    struct ieee80211_rx_status *stats)
464 {
465         struct iwl_rx_packet *pkt = rxb_addr(rxb);
466         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
467         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
468         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
469         u16 len = le16_to_cpu(rx_hdr->len);
470         struct sk_buff *skb;
471         __le16 fc = hdr->frame_control;
472
473         /* We received data from the HW, so stop the watchdog */
474         if (unlikely(len + IWL39_RX_FRAME_SIZE >
475                      PAGE_SIZE << priv->hw_params.rx_page_order)) {
476                 IWL_DEBUG_DROP(priv, "Corruption detected!\n");
477                 return;
478         }
479
480         /* We only process data packets if the interface is open */
481         if (unlikely(!priv->is_open)) {
482                 IWL_DEBUG_DROP_LIMIT(priv,
483                         "Dropping packet while interface is not open.\n");
484                 return;
485         }
486
487         skb = dev_alloc_skb(128);
488         if (!skb) {
489                 IWL_ERR(priv, "dev_alloc_skb failed\n");
490                 return;
491         }
492
493         if (!iwl3945_mod_params.sw_crypto)
494                 iwl_legacy_set_decrypted_flag(priv,
495                                        (struct ieee80211_hdr *)rxb_addr(rxb),
496                                        le32_to_cpu(rx_end->status), stats);
497
498         skb_add_rx_frag(skb, 0, rxb->page,
499                         (void *)rx_hdr->payload - (void *)pkt, len);
500
501         iwl_legacy_update_stats(priv, false, fc, len);
502         memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
503
504         ieee80211_rx(priv->hw, skb);
505         priv->alloc_rxb_page--;
506         rxb->page = NULL;
507 }
508
509 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
510
511 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
512                                 struct iwl_rx_mem_buffer *rxb)
513 {
514         struct ieee80211_hdr *header;
515         struct ieee80211_rx_status rx_status;
516         struct iwl_rx_packet *pkt = rxb_addr(rxb);
517         struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
518         struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
519         struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
520         u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg);
521         u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff);
522         u8 network_packet;
523
524         rx_status.flag = 0;
525         rx_status.mactime = le64_to_cpu(rx_end->timestamp);
526         rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
527                                 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
528         rx_status.freq =
529                 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel),
530                                                rx_status.band);
531
532         rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
533         if (rx_status.band == IEEE80211_BAND_5GHZ)
534                 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
535
536         rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) &
537                                         RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
538
539         /* set the preamble flag if appropriate */
540         if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
541                 rx_status.flag |= RX_FLAG_SHORTPRE;
542
543         if ((unlikely(rx_stats->phy_count > 20))) {
544                 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
545                                 rx_stats->phy_count);
546                 return;
547         }
548
549         if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
550             || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
551                 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
552                 return;
553         }
554
555
556
557         /* Convert 3945's rssi indicator to dBm */
558         rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
559
560         IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n",
561                         rx_status.signal, rx_stats_sig_avg,
562                         rx_stats_noise_diff);
563
564         header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
565
566         network_packet = iwl3945_is_network_packet(priv, header);
567
568         IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
569                               network_packet ? '*' : ' ',
570                               le16_to_cpu(rx_hdr->channel),
571                               rx_status.signal, rx_status.signal,
572                               rx_status.rate_idx);
573
574         iwl_legacy_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len),
575                                                 header);
576
577         if (network_packet) {
578                 priv->_3945.last_beacon_time =
579                         le32_to_cpu(rx_end->beacon_timestamp);
580                 priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp);
581                 priv->_3945.last_rx_rssi = rx_status.signal;
582         }
583
584         iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
585 }
586
587 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
588                                      struct iwl_tx_queue *txq,
589                                      dma_addr_t addr, u16 len, u8 reset, u8 pad)
590 {
591         int count;
592         struct iwl_queue *q;
593         struct iwl3945_tfd *tfd, *tfd_tmp;
594
595         q = &txq->q;
596         tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
597         tfd = &tfd_tmp[q->write_ptr];
598
599         if (reset)
600                 memset(tfd, 0, sizeof(*tfd));
601
602         count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
603
604         if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
605                 IWL_ERR(priv, "Error can not send more than %d chunks\n",
606                           NUM_TFD_CHUNKS);
607                 return -EINVAL;
608         }
609
610         tfd->tbs[count].addr = cpu_to_le32(addr);
611         tfd->tbs[count].len = cpu_to_le32(len);
612
613         count++;
614
615         tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
616                                          TFD_CTL_PAD_SET(pad));
617
618         return 0;
619 }
620
621 /**
622  * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
623  *
624  * Does NOT advance any indexes
625  */
626 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
627 {
628         struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
629         int index = txq->q.read_ptr;
630         struct iwl3945_tfd *tfd = &tfd_tmp[index];
631         struct pci_dev *dev = priv->pci_dev;
632         int i;
633         int counter;
634
635         /* sanity check */
636         counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
637         if (counter > NUM_TFD_CHUNKS) {
638                 IWL_ERR(priv, "Too many chunks: %i\n", counter);
639                 /* @todo issue fatal error, it is quite serious situation */
640                 return;
641         }
642
643         /* Unmap tx_cmd */
644         if (counter)
645                 pci_unmap_single(dev,
646                                 dma_unmap_addr(&txq->meta[index], mapping),
647                                 dma_unmap_len(&txq->meta[index], len),
648                                 PCI_DMA_TODEVICE);
649
650         /* unmap chunks if any */
651
652         for (i = 1; i < counter; i++)
653                 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
654                          le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
655
656         /* free SKB */
657         if (txq->txb) {
658                 struct sk_buff *skb;
659
660                 skb = txq->txb[txq->q.read_ptr].skb;
661
662                 /* can be called from irqs-disabled context */
663                 if (skb) {
664                         dev_kfree_skb_any(skb);
665                         txq->txb[txq->q.read_ptr].skb = NULL;
666                 }
667         }
668 }
669
670 /**
671  * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
672  *
673 */
674 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
675                                   struct iwl_device_cmd *cmd,
676                                   struct ieee80211_tx_info *info,
677                                   struct ieee80211_hdr *hdr,
678                                   int sta_id, int tx_id)
679 {
680         u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
681         u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945);
682         u16 rate_mask;
683         int rate;
684         u8 rts_retry_limit;
685         u8 data_retry_limit;
686         __le32 tx_flags;
687         __le16 fc = hdr->frame_control;
688         struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
689
690         rate = iwl3945_rates[rate_index].plcp;
691         tx_flags = tx_cmd->tx_flags;
692
693         /* We need to figure out how to get the sta->supp_rates while
694          * in this running context */
695         rate_mask = IWL_RATES_MASK_3945;
696
697         /* Set retry limit on DATA packets and Probe Responses*/
698         if (ieee80211_is_probe_resp(fc))
699                 data_retry_limit = 3;
700         else
701                 data_retry_limit = IWL_DEFAULT_TX_RETRY;
702         tx_cmd->data_retry_limit = data_retry_limit;
703
704         if (tx_id >= IWL39_CMD_QUEUE_NUM)
705                 rts_retry_limit = 3;
706         else
707                 rts_retry_limit = 7;
708
709         if (data_retry_limit < rts_retry_limit)
710                 rts_retry_limit = data_retry_limit;
711         tx_cmd->rts_retry_limit = rts_retry_limit;
712
713         tx_cmd->rate = rate;
714         tx_cmd->tx_flags = tx_flags;
715
716         /* OFDM */
717         tx_cmd->supp_rates[0] =
718            ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
719
720         /* CCK */
721         tx_cmd->supp_rates[1] = (rate_mask & 0xF);
722
723         IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
724                        "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
725                        tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags),
726                        tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]);
727 }
728
729 static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate)
730 {
731         unsigned long flags_spin;
732         struct iwl_station_entry *station;
733
734         if (sta_id == IWL_INVALID_STATION)
735                 return IWL_INVALID_STATION;
736
737         spin_lock_irqsave(&priv->sta_lock, flags_spin);
738         station = &priv->stations[sta_id];
739
740         station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
741         station->sta.rate_n_flags = cpu_to_le16(tx_rate);
742         station->sta.mode = STA_CONTROL_MODIFY_MSK;
743         iwl_legacy_send_add_sta(priv, &station->sta, CMD_ASYNC);
744         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
745
746         IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
747                         sta_id, tx_rate);
748         return sta_id;
749 }
750
751 static void iwl3945_set_pwr_vmain(struct iwl_priv *priv)
752 {
753 /*
754  * (for documentation purposes)
755  * to set power to V_AUX, do
756
757                 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
758                         iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
759                                         APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
760                                         ~APMG_PS_CTRL_MSK_PWR_SRC);
761
762                         iwl_poll_bit(priv, CSR_GPIO_IN,
763                                      CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
764                                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);
765                 }
766  */
767
768         iwl_legacy_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
769                         APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
770                         ~APMG_PS_CTRL_MSK_PWR_SRC);
771
772         iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
773                      CSR_GPIO_IN_BIT_AUX_POWER, 5000);  /* uS */
774 }
775
776 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
777 {
778         iwl_legacy_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->bd_dma);
779         iwl_legacy_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0),
780                                         rxq->rb_stts_dma);
781         iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
782         iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0),
783                 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
784                 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
785                 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
786                 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
787                 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
788                 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
789                 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
790                 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
791
792         /* fake read to flush all prev I/O */
793         iwl_legacy_read_direct32(priv, FH39_RSSR_CTRL);
794
795         return 0;
796 }
797
798 static int iwl3945_tx_reset(struct iwl_priv *priv)
799 {
800
801         /* bypass mode */
802         iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
803
804         /* RA 0 is active */
805         iwl_legacy_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
806
807         /* all 6 fifo are active */
808         iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
809
810         iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
811         iwl_legacy_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
812         iwl_legacy_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
813         iwl_legacy_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
814
815         iwl_legacy_write_direct32(priv, FH39_TSSR_CBB_BASE,
816                              priv->_3945.shared_phys);
817
818         iwl_legacy_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
819                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
820                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
821                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
822                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
823                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
824                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
825                 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
826
827
828         return 0;
829 }
830
831 /**
832  * iwl3945_txq_ctx_reset - Reset TX queue context
833  *
834  * Destroys all DMA structures and initialize them again
835  */
836 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
837 {
838         int rc;
839         int txq_id, slots_num;
840
841         iwl3945_hw_txq_ctx_free(priv);
842
843         /* allocate tx queue structure */
844         rc = iwl_legacy_alloc_txq_mem(priv);
845         if (rc)
846                 return rc;
847
848         /* Tx CMD queue */
849         rc = iwl3945_tx_reset(priv);
850         if (rc)
851                 goto error;
852
853         /* Tx queue(s) */
854         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
855                 slots_num = (txq_id == IWL39_CMD_QUEUE_NUM) ?
856                                 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
857                 rc = iwl_legacy_tx_queue_init(priv, &priv->txq[txq_id],
858                                                 slots_num, txq_id);
859                 if (rc) {
860                         IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
861                         goto error;
862                 }
863         }
864
865         return rc;
866
867  error:
868         iwl3945_hw_txq_ctx_free(priv);
869         return rc;
870 }
871
872
873 /*
874  * Start up 3945's basic functionality after it has been reset
875  * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop())
876  * NOTE:  This does not load uCode nor start the embedded processor
877  */
878 static int iwl3945_apm_init(struct iwl_priv *priv)
879 {
880         int ret = iwl_legacy_apm_init(priv);
881
882         /* Clear APMG (NIC's internal power management) interrupts */
883         iwl_legacy_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
884         iwl_legacy_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF);
885
886         /* Reset radio chip */
887         iwl_legacy_set_bits_prph(priv, APMG_PS_CTRL_REG,
888                                 APMG_PS_CTRL_VAL_RESET_REQ);
889         udelay(5);
890         iwl_legacy_clear_bits_prph(priv, APMG_PS_CTRL_REG,
891                                 APMG_PS_CTRL_VAL_RESET_REQ);
892
893         return ret;
894 }
895
896 static void iwl3945_nic_config(struct iwl_priv *priv)
897 {
898         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
899         unsigned long flags;
900         u8 rev_id = priv->pci_dev->revision;
901
902         spin_lock_irqsave(&priv->lock, flags);
903
904         /* Determine HW type */
905         IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
906
907         if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
908                 IWL_DEBUG_INFO(priv, "RTP type\n");
909         else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
910                 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
911                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
912                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
913         } else {
914                 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
915                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
916                             CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
917         }
918
919         if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
920                 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
921                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
922                             CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
923         } else
924                 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
925
926         if ((eeprom->board_revision & 0xF0) == 0xD0) {
927                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
928                                eeprom->board_revision);
929                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
930                             CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
931         } else {
932                 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
933                                eeprom->board_revision);
934                 iwl_legacy_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
935                               CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
936         }
937
938         if (eeprom->almgor_m_version <= 1) {
939                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
940                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
941                 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
942                                eeprom->almgor_m_version);
943         } else {
944                 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
945                                eeprom->almgor_m_version);
946                 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
947                             CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
948         }
949         spin_unlock_irqrestore(&priv->lock, flags);
950
951         if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
952                 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
953
954         if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
955                 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
956 }
957
958 int iwl3945_hw_nic_init(struct iwl_priv *priv)
959 {
960         int rc;
961         unsigned long flags;
962         struct iwl_rx_queue *rxq = &priv->rxq;
963
964         spin_lock_irqsave(&priv->lock, flags);
965         priv->cfg->ops->lib->apm_ops.init(priv);
966         spin_unlock_irqrestore(&priv->lock, flags);
967
968         iwl3945_set_pwr_vmain(priv);
969
970         priv->cfg->ops->lib->apm_ops.config(priv);
971
972         /* Allocate the RX queue, or reset if it is already allocated */
973         if (!rxq->bd) {
974                 rc = iwl_legacy_rx_queue_alloc(priv);
975                 if (rc) {
976                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
977                         return -ENOMEM;
978                 }
979         } else
980                 iwl3945_rx_queue_reset(priv, rxq);
981
982         iwl3945_rx_replenish(priv);
983
984         iwl3945_rx_init(priv, rxq);
985
986
987         /* Look at using this instead:
988         rxq->need_update = 1;
989         iwl_legacy_rx_queue_update_write_ptr(priv, rxq);
990         */
991
992         iwl_legacy_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
993
994         rc = iwl3945_txq_ctx_reset(priv);
995         if (rc)
996                 return rc;
997
998         set_bit(STATUS_INIT, &priv->status);
999
1000         return 0;
1001 }
1002
1003 /**
1004  * iwl3945_hw_txq_ctx_free - Free TXQ Context
1005  *
1006  * Destroy all TX DMA queues and structures
1007  */
1008 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1009 {
1010         int txq_id;
1011
1012         /* Tx queues */
1013         if (priv->txq)
1014                 for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
1015                      txq_id++)
1016                         if (txq_id == IWL39_CMD_QUEUE_NUM)
1017                                 iwl_legacy_cmd_queue_free(priv);
1018                         else
1019                                 iwl_legacy_tx_queue_free(priv, txq_id);
1020
1021         /* free tx queue structure */
1022         iwl_legacy_txq_mem(priv);
1023 }
1024
1025 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1026 {
1027         int txq_id;
1028
1029         /* stop SCD */
1030         iwl_legacy_write_prph(priv, ALM_SCD_MODE_REG, 0);
1031         iwl_legacy_write_prph(priv, ALM_SCD_TXFACT_REG, 0);
1032
1033         /* reset TFD queues */
1034         for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
1035                 iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1036                 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1037                                 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1038                                 1000);
1039         }
1040
1041         iwl3945_hw_txq_ctx_free(priv);
1042 }
1043
1044 /**
1045  * iwl3945_hw_reg_adjust_power_by_temp
1046  * return index delta into power gain settings table
1047 */
1048 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1049 {
1050         return (new_reading - old_reading) * (-11) / 100;
1051 }
1052
1053 /**
1054  * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1055  */
1056 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1057 {
1058         return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1059 }
1060
1061 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1062 {
1063         return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1064 }
1065
1066 /**
1067  * iwl3945_hw_reg_txpower_get_temperature
1068  * get the current temperature by reading from NIC
1069 */
1070 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1071 {
1072         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1073         int temperature;
1074
1075         temperature = iwl3945_hw_get_temperature(priv);
1076
1077         /* driver's okay range is -260 to +25.
1078          *   human readable okay range is 0 to +285 */
1079         IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1080
1081         /* handle insane temp reading */
1082         if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1083                 IWL_ERR(priv, "Error bad temperature value  %d\n", temperature);
1084
1085                 /* if really really hot(?),
1086                  *   substitute the 3rd band/group's temp measured at factory */
1087                 if (priv->last_temperature > 100)
1088                         temperature = eeprom->groups[2].temperature;
1089                 else /* else use most recent "sane" value from driver */
1090                         temperature = priv->last_temperature;
1091         }
1092
1093         return temperature;     /* raw, not "human readable" */
1094 }
1095
1096 /* Adjust Txpower only if temperature variance is greater than threshold.
1097  *
1098  * Both are lower than older versions' 9 degrees */
1099 #define IWL_TEMPERATURE_LIMIT_TIMER   6
1100
1101 /**
1102  * iwl3945_is_temp_calib_needed - determines if new calibration is needed
1103  *
1104  * records new temperature in tx_mgr->temperature.
1105  * replaces tx_mgr->last_temperature *only* if calib needed
1106  *    (assumes caller will actually do the calibration!). */
1107 static int iwl3945_is_temp_calib_needed(struct iwl_priv *priv)
1108 {
1109         int temp_diff;
1110
1111         priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1112         temp_diff = priv->temperature - priv->last_temperature;
1113
1114         /* get absolute value */
1115         if (temp_diff < 0) {
1116                 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1117                 temp_diff = -temp_diff;
1118         } else if (temp_diff == 0)
1119                 IWL_DEBUG_POWER(priv, "Same temp,\n");
1120         else
1121                 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1122
1123         /* if we don't need calibration, *don't* update last_temperature */
1124         if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1125                 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1126                 return 0;
1127         }
1128
1129         IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1130
1131         /* assume that caller will actually do calib ...
1132          *   update the "last temperature" value */
1133         priv->last_temperature = priv->temperature;
1134         return 1;
1135 }
1136
1137 #define IWL_MAX_GAIN_ENTRIES 78
1138 #define IWL_CCK_FROM_OFDM_POWER_DIFF  -5
1139 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1140
1141 /* radio and DSP power table, each step is 1/2 dB.
1142  * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1143 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1144         {
1145          {251, 127},            /* 2.4 GHz, highest power */
1146          {251, 127},
1147          {251, 127},
1148          {251, 127},
1149          {251, 125},
1150          {251, 110},
1151          {251, 105},
1152          {251, 98},
1153          {187, 125},
1154          {187, 115},
1155          {187, 108},
1156          {187, 99},
1157          {243, 119},
1158          {243, 111},
1159          {243, 105},
1160          {243, 97},
1161          {243, 92},
1162          {211, 106},
1163          {211, 100},
1164          {179, 120},
1165          {179, 113},
1166          {179, 107},
1167          {147, 125},
1168          {147, 119},
1169          {147, 112},
1170          {147, 106},
1171          {147, 101},
1172          {147, 97},
1173          {147, 91},
1174          {115, 107},
1175          {235, 121},
1176          {235, 115},
1177          {235, 109},
1178          {203, 127},
1179          {203, 121},
1180          {203, 115},
1181          {203, 108},
1182          {203, 102},
1183          {203, 96},
1184          {203, 92},
1185          {171, 110},
1186          {171, 104},
1187          {171, 98},
1188          {139, 116},
1189          {227, 125},
1190          {227, 119},
1191          {227, 113},
1192          {227, 107},
1193          {227, 101},
1194          {227, 96},
1195          {195, 113},
1196          {195, 106},
1197          {195, 102},
1198          {195, 95},
1199          {163, 113},
1200          {163, 106},
1201          {163, 102},
1202          {163, 95},
1203          {131, 113},
1204          {131, 106},
1205          {131, 102},
1206          {131, 95},
1207          {99, 113},
1208          {99, 106},
1209          {99, 102},
1210          {99, 95},
1211          {67, 113},
1212          {67, 106},
1213          {67, 102},
1214          {67, 95},
1215          {35, 113},
1216          {35, 106},
1217          {35, 102},
1218          {35, 95},
1219          {3, 113},
1220          {3, 106},
1221          {3, 102},
1222          {3, 95} },             /* 2.4 GHz, lowest power */
1223         {
1224          {251, 127},            /* 5.x GHz, highest power */
1225          {251, 120},
1226          {251, 114},
1227          {219, 119},
1228          {219, 101},
1229          {187, 113},
1230          {187, 102},
1231          {155, 114},
1232          {155, 103},
1233          {123, 117},
1234          {123, 107},
1235          {123, 99},
1236          {123, 92},
1237          {91, 108},
1238          {59, 125},
1239          {59, 118},
1240          {59, 109},
1241          {59, 102},
1242          {59, 96},
1243          {59, 90},
1244          {27, 104},
1245          {27, 98},
1246          {27, 92},
1247          {115, 118},
1248          {115, 111},
1249          {115, 104},
1250          {83, 126},
1251          {83, 121},
1252          {83, 113},
1253          {83, 105},
1254          {83, 99},
1255          {51, 118},
1256          {51, 111},
1257          {51, 104},
1258          {51, 98},
1259          {19, 116},
1260          {19, 109},
1261          {19, 102},
1262          {19, 98},
1263          {19, 93},
1264          {171, 113},
1265          {171, 107},
1266          {171, 99},
1267          {139, 120},
1268          {139, 113},
1269          {139, 107},
1270          {139, 99},
1271          {107, 120},
1272          {107, 113},
1273          {107, 107},
1274          {107, 99},
1275          {75, 120},
1276          {75, 113},
1277          {75, 107},
1278          {75, 99},
1279          {43, 120},
1280          {43, 113},
1281          {43, 107},
1282          {43, 99},
1283          {11, 120},
1284          {11, 113},
1285          {11, 107},
1286          {11, 99},
1287          {131, 107},
1288          {131, 99},
1289          {99, 120},
1290          {99, 113},
1291          {99, 107},
1292          {99, 99},
1293          {67, 120},
1294          {67, 113},
1295          {67, 107},
1296          {67, 99},
1297          {35, 120},
1298          {35, 113},
1299          {35, 107},
1300          {35, 99},
1301          {3, 120} }             /* 5.x GHz, lowest power */
1302 };
1303
1304 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1305 {
1306         if (index < 0)
1307                 return 0;
1308         if (index >= IWL_MAX_GAIN_ENTRIES)
1309                 return IWL_MAX_GAIN_ENTRIES - 1;
1310         return (u8) index;
1311 }
1312
1313 /* Kick off thermal recalibration check every 60 seconds */
1314 #define REG_RECALIB_PERIOD (60)
1315
1316 /**
1317  * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1318  *
1319  * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1320  * or 6 Mbit (OFDM) rates.
1321  */
1322 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1323                                s32 rate_index, const s8 *clip_pwrs,
1324                                struct iwl_channel_info *ch_info,
1325                                int band_index)
1326 {
1327         struct iwl3945_scan_power_info *scan_power_info;
1328         s8 power;
1329         u8 power_index;
1330
1331         scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1332
1333         /* use this channel group's 6Mbit clipping/saturation pwr,
1334          *   but cap at regulatory scan power restriction (set during init
1335          *   based on eeprom channel data) for this channel.  */
1336         power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1337
1338         power = min(power, priv->tx_power_user_lmt);
1339         scan_power_info->requested_power = power;
1340
1341         /* find difference between new scan *power* and current "normal"
1342          *   Tx *power* for 6Mb.  Use this difference (x2) to adjust the
1343          *   current "normal" temperature-compensated Tx power *index* for
1344          *   this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1345          *   *index*. */
1346         power_index = ch_info->power_info[rate_index].power_table_index
1347             - (power - ch_info->power_info
1348                [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1349
1350         /* store reference index that we use when adjusting *all* scan
1351          *   powers.  So we can accommodate user (all channel) or spectrum
1352          *   management (single channel) power changes "between" temperature
1353          *   feedback compensation procedures.
1354          * don't force fit this reference index into gain table; it may be a
1355          *   negative number.  This will help avoid errors when we're at
1356          *   the lower bounds (highest gains, for warmest temperatures)
1357          *   of the table. */
1358
1359         /* don't exceed table bounds for "real" setting */
1360         power_index = iwl3945_hw_reg_fix_power_index(power_index);
1361
1362         scan_power_info->power_table_index = power_index;
1363         scan_power_info->tpc.tx_gain =
1364             power_gain_table[band_index][power_index].tx_gain;
1365         scan_power_info->tpc.dsp_atten =
1366             power_gain_table[band_index][power_index].dsp_atten;
1367 }
1368
1369 /**
1370  * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1371  *
1372  * Configures power settings for all rates for the current channel,
1373  * using values from channel info struct, and send to NIC
1374  */
1375 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1376 {
1377         int rate_idx, i;
1378         const struct iwl_channel_info *ch_info = NULL;
1379         struct iwl3945_txpowertable_cmd txpower = {
1380                 .channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel,
1381         };
1382         u16 chan;
1383
1384         if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
1385                       "TX Power requested while scanning!\n"))
1386                 return -EAGAIN;
1387
1388         chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel);
1389
1390         txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1391         ch_info = iwl_legacy_get_channel_info(priv, priv->band, chan);
1392         if (!ch_info) {
1393                 IWL_ERR(priv,
1394                         "Failed to get channel info for channel %d [%d]\n",
1395                         chan, priv->band);
1396                 return -EINVAL;
1397         }
1398
1399         if (!iwl_legacy_is_channel_valid(ch_info)) {
1400                 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1401                                 "non-Tx channel.\n");
1402                 return 0;
1403         }
1404
1405         /* fill cmd with power settings for all rates for current channel */
1406         /* Fill OFDM rate */
1407         for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1408              rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1409
1410                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1411                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1412
1413                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1414                                 le16_to_cpu(txpower.channel),
1415                                 txpower.band,
1416                                 txpower.power[i].tpc.tx_gain,
1417                                 txpower.power[i].tpc.dsp_atten,
1418                                 txpower.power[i].rate);
1419         }
1420         /* Fill CCK rates */
1421         for (rate_idx = IWL_FIRST_CCK_RATE;
1422              rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1423                 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1424                 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1425
1426                 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1427                                 le16_to_cpu(txpower.channel),
1428                                 txpower.band,
1429                                 txpower.power[i].tpc.tx_gain,
1430                                 txpower.power[i].tpc.dsp_atten,
1431                                 txpower.power[i].rate);
1432         }
1433
1434         return iwl_legacy_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1435                                 sizeof(struct iwl3945_txpowertable_cmd),
1436                                 &txpower);
1437
1438 }
1439
1440 /**
1441  * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1442  * @ch_info: Channel to update.  Uses power_info.requested_power.
1443  *
1444  * Replace requested_power and base_power_index ch_info fields for
1445  * one channel.
1446  *
1447  * Called if user or spectrum management changes power preferences.
1448  * Takes into account h/w and modulation limitations (clip power).
1449  *
1450  * This does *not* send anything to NIC, just sets up ch_info for one channel.
1451  *
1452  * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1453  *       properly fill out the scan powers, and actual h/w gain settings,
1454  *       and send changes to NIC
1455  */
1456 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1457                              struct iwl_channel_info *ch_info)
1458 {
1459         struct iwl3945_channel_power_info *power_info;
1460         int power_changed = 0;
1461         int i;
1462         const s8 *clip_pwrs;
1463         int power;
1464
1465         /* Get this chnlgrp's rate-to-max/clip-powers table */
1466         clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
1467
1468         /* Get this channel's rate-to-current-power settings table */
1469         power_info = ch_info->power_info;
1470
1471         /* update OFDM Txpower settings */
1472         for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1473              i++, ++power_info) {
1474                 int delta_idx;
1475
1476                 /* limit new power to be no more than h/w capability */
1477                 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1478                 if (power == power_info->requested_power)
1479                         continue;
1480
1481                 /* find difference between old and new requested powers,
1482                  *    update base (non-temp-compensated) power index */
1483                 delta_idx = (power - power_info->requested_power) * 2;
1484                 power_info->base_power_index -= delta_idx;
1485
1486                 /* save new requested power value */
1487                 power_info->requested_power = power;
1488
1489                 power_changed = 1;
1490         }
1491
1492         /* update CCK Txpower settings, based on OFDM 12M setting ...
1493          *    ... all CCK power settings for a given channel are the *same*. */
1494         if (power_changed) {
1495                 power =
1496                     ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1497                     requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1498
1499                 /* do all CCK rates' iwl3945_channel_power_info structures */
1500                 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1501                         power_info->requested_power = power;
1502                         power_info->base_power_index =
1503                             ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1504                             base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1505                         ++power_info;
1506                 }
1507         }
1508
1509         return 0;
1510 }
1511
1512 /**
1513  * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1514  *
1515  * NOTE: Returned power limit may be less (but not more) than requested,
1516  *       based strictly on regulatory (eeprom and spectrum mgt) limitations
1517  *       (no consideration for h/w clipping limitations).
1518  */
1519 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1520 {
1521         s8 max_power;
1522
1523 #if 0
1524         /* if we're using TGd limits, use lower of TGd or EEPROM */
1525         if (ch_info->tgd_data.max_power != 0)
1526                 max_power = min(ch_info->tgd_data.max_power,
1527                                 ch_info->eeprom.max_power_avg);
1528
1529         /* else just use EEPROM limits */
1530         else
1531 #endif
1532                 max_power = ch_info->eeprom.max_power_avg;
1533
1534         return min(max_power, ch_info->max_power_avg);
1535 }
1536
1537 /**
1538  * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1539  *
1540  * Compensate txpower settings of *all* channels for temperature.
1541  * This only accounts for the difference between current temperature
1542  *   and the factory calibration temperatures, and bases the new settings
1543  *   on the channel's base_power_index.
1544  *
1545  * If RxOn is "associated", this sends the new Txpower to NIC!
1546  */
1547 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1548 {
1549         struct iwl_channel_info *ch_info = NULL;
1550         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1551         int delta_index;
1552         const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1553         u8 a_band;
1554         u8 rate_index;
1555         u8 scan_tbl_index;
1556         u8 i;
1557         int ref_temp;
1558         int temperature = priv->temperature;
1559
1560         if (priv->disable_tx_power_cal ||
1561             test_bit(STATUS_SCANNING, &priv->status)) {
1562                 /* do not perform tx power calibration */
1563                 return 0;
1564         }
1565         /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1566         for (i = 0; i < priv->channel_count; i++) {
1567                 ch_info = &priv->channel_info[i];
1568                 a_band = iwl_legacy_is_channel_a_band(ch_info);
1569
1570                 /* Get this chnlgrp's factory calibration temperature */
1571                 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1572                     temperature;
1573
1574                 /* get power index adjustment based on current and factory
1575                  * temps */
1576                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1577                                                               ref_temp);
1578
1579                 /* set tx power value for all rates, OFDM and CCK */
1580                 for (rate_index = 0; rate_index < IWL_RATE_COUNT_3945;
1581                      rate_index++) {
1582                         int power_idx =
1583                             ch_info->power_info[rate_index].base_power_index;
1584
1585                         /* temperature compensate */
1586                         power_idx += delta_index;
1587
1588                         /* stay within table range */
1589                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1590                         ch_info->power_info[rate_index].
1591                             power_table_index = (u8) power_idx;
1592                         ch_info->power_info[rate_index].tpc =
1593                             power_gain_table[a_band][power_idx];
1594                 }
1595
1596                 /* Get this chnlgrp's rate-to-max/clip-powers table */
1597                 clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
1598
1599                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1600                 for (scan_tbl_index = 0;
1601                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1602                         s32 actual_index = (scan_tbl_index == 0) ?
1603                             IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1604                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1605                                            actual_index, clip_pwrs,
1606                                            ch_info, a_band);
1607                 }
1608         }
1609
1610         /* send Txpower command for current channel to ucode */
1611         return priv->cfg->ops->lib->send_tx_power(priv);
1612 }
1613
1614 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1615 {
1616         struct iwl_channel_info *ch_info;
1617         s8 max_power;
1618         u8 a_band;
1619         u8 i;
1620
1621         if (priv->tx_power_user_lmt == power) {
1622                 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1623                                 "limit: %ddBm.\n", power);
1624                 return 0;
1625         }
1626
1627         IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1628         priv->tx_power_user_lmt = power;
1629
1630         /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1631
1632         for (i = 0; i < priv->channel_count; i++) {
1633                 ch_info = &priv->channel_info[i];
1634                 a_band = iwl_legacy_is_channel_a_band(ch_info);
1635
1636                 /* find minimum power of all user and regulatory constraints
1637                  *    (does not consider h/w clipping limitations) */
1638                 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1639                 max_power = min(power, max_power);
1640                 if (max_power != ch_info->curr_txpow) {
1641                         ch_info->curr_txpow = max_power;
1642
1643                         /* this considers the h/w clipping limitations */
1644                         iwl3945_hw_reg_set_new_power(priv, ch_info);
1645                 }
1646         }
1647
1648         /* update txpower settings for all channels,
1649          *   send to NIC if associated. */
1650         iwl3945_is_temp_calib_needed(priv);
1651         iwl3945_hw_reg_comp_txpower_temp(priv);
1652
1653         return 0;
1654 }
1655
1656 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv,
1657                                    struct iwl_rxon_context *ctx)
1658 {
1659         int rc = 0;
1660         struct iwl_rx_packet *pkt;
1661         struct iwl3945_rxon_assoc_cmd rxon_assoc;
1662         struct iwl_host_cmd cmd = {
1663                 .id = REPLY_RXON_ASSOC,
1664                 .len = sizeof(rxon_assoc),
1665                 .flags = CMD_WANT_SKB,
1666                 .data = &rxon_assoc,
1667         };
1668         const struct iwl_legacy_rxon_cmd *rxon1 = &ctx->staging;
1669         const struct iwl_legacy_rxon_cmd *rxon2 = &ctx->active;
1670
1671         if ((rxon1->flags == rxon2->flags) &&
1672             (rxon1->filter_flags == rxon2->filter_flags) &&
1673             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1674             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1675                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
1676                 return 0;
1677         }
1678
1679         rxon_assoc.flags = ctx->staging.flags;
1680         rxon_assoc.filter_flags = ctx->staging.filter_flags;
1681         rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
1682         rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
1683         rxon_assoc.reserved = 0;
1684
1685         rc = iwl_legacy_send_cmd_sync(priv, &cmd);
1686         if (rc)
1687                 return rc;
1688
1689         pkt = (struct iwl_rx_packet *)cmd.reply_page;
1690         if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
1691                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
1692                 rc = -EIO;
1693         }
1694
1695         iwl_legacy_free_pages(priv, cmd.reply_page);
1696
1697         return rc;
1698 }
1699
1700 /**
1701  * iwl3945_commit_rxon - commit staging_rxon to hardware
1702  *
1703  * The RXON command in staging_rxon is committed to the hardware and
1704  * the active_rxon structure is updated with the new data.  This
1705  * function correctly transitions out of the RXON_ASSOC_MSK state if
1706  * a HW tune is required based on the RXON structure changes.
1707  */
1708 int iwl3945_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1709 {
1710         /* cast away the const for active_rxon in this function */
1711         struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active;
1712         struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
1713         int rc = 0;
1714         bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
1715
1716         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1717                 return -EINVAL;
1718
1719         if (!iwl_legacy_is_alive(priv))
1720                 return -1;
1721
1722         /* always get timestamp with Rx frame */
1723         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1724
1725         /* select antenna */
1726         staging_rxon->flags &=
1727             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1728         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
1729
1730         rc = iwl_legacy_check_rxon_cmd(priv, ctx);
1731         if (rc) {
1732                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
1733                 return -EINVAL;
1734         }
1735
1736         /* If we don't need to send a full RXON, we can use
1737          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1738          * and other flags for the current radio configuration. */
1739         if (!iwl_legacy_full_rxon_required(priv,
1740                         &priv->contexts[IWL_RXON_CTX_BSS])) {
1741                 rc = iwl_legacy_send_rxon_assoc(priv,
1742                                          &priv->contexts[IWL_RXON_CTX_BSS]);
1743                 if (rc) {
1744                         IWL_ERR(priv, "Error setting RXON_ASSOC "
1745                                   "configuration (%d).\n", rc);
1746                         return rc;
1747                 }
1748
1749                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1750
1751                 return 0;
1752         }
1753
1754         /* If we are currently associated and the new config requires
1755          * an RXON_ASSOC and the new config wants the associated mask enabled,
1756          * we must clear the associated from the active configuration
1757          * before we apply the new config */
1758         if (iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) {
1759                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
1760                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1761
1762                 /*
1763                  * reserved4 and 5 could have been filled by the iwlcore code.
1764                  * Let's clear them before pushing to the 3945.
1765                  */
1766                 active_rxon->reserved4 = 0;
1767                 active_rxon->reserved5 = 0;
1768                 rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
1769                                       sizeof(struct iwl3945_rxon_cmd),
1770                                       &priv->contexts[IWL_RXON_CTX_BSS].active);
1771
1772                 /* If the mask clearing failed then we set
1773                  * active_rxon back to what it was previously */
1774                 if (rc) {
1775                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1776                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
1777                                   "configuration (%d).\n", rc);
1778                         return rc;
1779                 }
1780                 iwl_legacy_clear_ucode_stations(priv,
1781                                          &priv->contexts[IWL_RXON_CTX_BSS]);
1782                 iwl_legacy_restore_stations(priv,
1783                                          &priv->contexts[IWL_RXON_CTX_BSS]);
1784         }
1785
1786         IWL_DEBUG_INFO(priv, "Sending RXON\n"
1787                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1788                        "* channel = %d\n"
1789                        "* bssid = %pM\n",
1790                        (new_assoc ? "" : "out"),
1791                        le16_to_cpu(staging_rxon->channel),
1792                        staging_rxon->bssid_addr);
1793
1794         /*
1795          * reserved4 and 5 could have been filled by the iwlcore code.
1796          * Let's clear them before pushing to the 3945.
1797          */
1798         staging_rxon->reserved4 = 0;
1799         staging_rxon->reserved5 = 0;
1800
1801         iwl_legacy_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto);
1802
1803         /* Apply the new configuration */
1804         rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RXON,
1805                               sizeof(struct iwl3945_rxon_cmd),
1806                               staging_rxon);
1807         if (rc) {
1808                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
1809                 return rc;
1810         }
1811
1812         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1813
1814         if (!new_assoc) {
1815                 iwl_legacy_clear_ucode_stations(priv,
1816                                          &priv->contexts[IWL_RXON_CTX_BSS]);
1817                 iwl_legacy_restore_stations(priv,
1818                                         &priv->contexts[IWL_RXON_CTX_BSS]);
1819         }
1820
1821         /* If we issue a new RXON command which required a tune then we must
1822          * send a new TXPOWER command or we won't be able to Tx any frames */
1823         rc = iwl_legacy_set_tx_power(priv, priv->tx_power_next, true);
1824         if (rc) {
1825                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
1826                 return rc;
1827         }
1828
1829         /* Init the hardware's rate fallback order based on the band */
1830         rc = iwl3945_init_hw_rate_table(priv);
1831         if (rc) {
1832                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
1833                 return -EIO;
1834         }
1835
1836         return 0;
1837 }
1838
1839 /**
1840  * iwl3945_reg_txpower_periodic -  called when time to check our temperature.
1841  *
1842  * -- reset periodic timer
1843  * -- see if temp has changed enough to warrant re-calibration ... if so:
1844  *     -- correct coeffs for temp (can reset temp timer)
1845  *     -- save this temp as "last",
1846  *     -- send new set of gain settings to NIC
1847  * NOTE:  This should continue working, even when we're not associated,
1848  *   so we can keep our internal table of scan powers current. */
1849 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
1850 {
1851         /* This will kick in the "brute force"
1852          * iwl3945_hw_reg_comp_txpower_temp() below */
1853         if (!iwl3945_is_temp_calib_needed(priv))
1854                 goto reschedule;
1855
1856         /* Set up a new set of temp-adjusted TxPowers, send to NIC.
1857          * This is based *only* on current temperature,
1858          * ignoring any previous power measurements */
1859         iwl3945_hw_reg_comp_txpower_temp(priv);
1860
1861  reschedule:
1862         queue_delayed_work(priv->workqueue,
1863                            &priv->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ);
1864 }
1865
1866 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
1867 {
1868         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1869                                              _3945.thermal_periodic.work);
1870
1871         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1872                 return;
1873
1874         mutex_lock(&priv->mutex);
1875         iwl3945_reg_txpower_periodic(priv);
1876         mutex_unlock(&priv->mutex);
1877 }
1878
1879 /**
1880  * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
1881  *                                 for the channel.
1882  *
1883  * This function is used when initializing channel-info structs.
1884  *
1885  * NOTE: These channel groups do *NOT* match the bands above!
1886  *       These channel groups are based on factory-tested channels;
1887  *       on A-band, EEPROM's "group frequency" entries represent the top
1888  *       channel in each group 1-4.  Group 5 All B/G channels are in group 0.
1889  */
1890 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
1891                                        const struct iwl_channel_info *ch_info)
1892 {
1893         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1894         struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
1895         u8 group;
1896         u16 group_index = 0;    /* based on factory calib frequencies */
1897         u8 grp_channel;
1898
1899         /* Find the group index for the channel ... don't use index 1(?) */
1900         if (iwl_legacy_is_channel_a_band(ch_info)) {
1901                 for (group = 1; group < 5; group++) {
1902                         grp_channel = ch_grp[group].group_channel;
1903                         if (ch_info->channel <= grp_channel) {
1904                                 group_index = group;
1905                                 break;
1906                         }
1907                 }
1908                 /* group 4 has a few channels *above* its factory cal freq */
1909                 if (group == 5)
1910                         group_index = 4;
1911         } else
1912                 group_index = 0;        /* 2.4 GHz, group 0 */
1913
1914         IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
1915                         group_index);
1916         return group_index;
1917 }
1918
1919 /**
1920  * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
1921  *
1922  * Interpolate to get nominal (i.e. at factory calibration temperature) index
1923  *   into radio/DSP gain settings table for requested power.
1924  */
1925 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
1926                                        s8 requested_power,
1927                                        s32 setting_index, s32 *new_index)
1928 {
1929         const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
1930         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1931         s32 index0, index1;
1932         s32 power = 2 * requested_power;
1933         s32 i;
1934         const struct iwl3945_eeprom_txpower_sample *samples;
1935         s32 gains0, gains1;
1936         s32 res;
1937         s32 denominator;
1938
1939         chnl_grp = &eeprom->groups[setting_index];
1940         samples = chnl_grp->samples;
1941         for (i = 0; i < 5; i++) {
1942                 if (power == samples[i].power) {
1943                         *new_index = samples[i].gain_index;
1944                         return 0;
1945                 }
1946         }
1947
1948         if (power > samples[1].power) {
1949                 index0 = 0;
1950                 index1 = 1;
1951         } else if (power > samples[2].power) {
1952                 index0 = 1;
1953                 index1 = 2;
1954         } else if (power > samples[3].power) {
1955                 index0 = 2;
1956                 index1 = 3;
1957         } else {
1958                 index0 = 3;
1959                 index1 = 4;
1960         }
1961
1962         denominator = (s32) samples[index1].power - (s32) samples[index0].power;
1963         if (denominator == 0)
1964                 return -EINVAL;
1965         gains0 = (s32) samples[index0].gain_index * (1 << 19);
1966         gains1 = (s32) samples[index1].gain_index * (1 << 19);
1967         res = gains0 + (gains1 - gains0) *
1968             ((s32) power - (s32) samples[index0].power) / denominator +
1969             (1 << 18);
1970         *new_index = res >> 19;
1971         return 0;
1972 }
1973
1974 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
1975 {
1976         u32 i;
1977         s32 rate_index;
1978         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1979         const struct iwl3945_eeprom_txpower_group *group;
1980
1981         IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
1982
1983         for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
1984                 s8 *clip_pwrs;  /* table of power levels for each rate */
1985                 s8 satur_pwr;   /* saturation power for each chnl group */
1986                 group = &eeprom->groups[i];
1987
1988                 /* sanity check on factory saturation power value */
1989                 if (group->saturation_power < 40) {
1990                         IWL_WARN(priv, "Error: saturation power is %d, "
1991                                     "less than minimum expected 40\n",
1992                                     group->saturation_power);
1993                         return;
1994                 }
1995
1996                 /*
1997                  * Derive requested power levels for each rate, based on
1998                  *   hardware capabilities (saturation power for band).
1999                  * Basic value is 3dB down from saturation, with further
2000                  *   power reductions for highest 3 data rates.  These
2001                  *   backoffs provide headroom for high rate modulation
2002                  *   power peaks, without too much distortion (clipping).
2003                  */
2004                 /* we'll fill in this array with h/w max power levels */
2005                 clip_pwrs = (s8 *) priv->_3945.clip_groups[i].clip_powers;
2006
2007                 /* divide factory saturation power by 2 to find -3dB level */
2008                 satur_pwr = (s8) (group->saturation_power >> 1);
2009
2010                 /* fill in channel group's nominal powers for each rate */
2011                 for (rate_index = 0;
2012                      rate_index < IWL_RATE_COUNT_3945; rate_index++, clip_pwrs++) {
2013                         switch (rate_index) {
2014                         case IWL_RATE_36M_INDEX_TABLE:
2015                                 if (i == 0)     /* B/G */
2016                                         *clip_pwrs = satur_pwr;
2017                                 else    /* A */
2018                                         *clip_pwrs = satur_pwr - 5;
2019                                 break;
2020                         case IWL_RATE_48M_INDEX_TABLE:
2021                                 if (i == 0)
2022                                         *clip_pwrs = satur_pwr - 7;
2023                                 else
2024                                         *clip_pwrs = satur_pwr - 10;
2025                                 break;
2026                         case IWL_RATE_54M_INDEX_TABLE:
2027                                 if (i == 0)
2028                                         *clip_pwrs = satur_pwr - 9;
2029                                 else
2030                                         *clip_pwrs = satur_pwr - 12;
2031                                 break;
2032                         default:
2033                                 *clip_pwrs = satur_pwr;
2034                                 break;
2035                         }
2036                 }
2037         }
2038 }
2039
2040 /**
2041  * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2042  *
2043  * Second pass (during init) to set up priv->channel_info
2044  *
2045  * Set up Tx-power settings in our channel info database for each VALID
2046  * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2047  * and current temperature.
2048  *
2049  * Since this is based on current temperature (at init time), these values may
2050  * not be valid for very long, but it gives us a starting/default point,
2051  * and allows us to active (i.e. using Tx) scan.
2052  *
2053  * This does *not* write values to NIC, just sets up our internal table.
2054  */
2055 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2056 {
2057         struct iwl_channel_info *ch_info = NULL;
2058         struct iwl3945_channel_power_info *pwr_info;
2059         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2060         int delta_index;
2061         u8 rate_index;
2062         u8 scan_tbl_index;
2063         const s8 *clip_pwrs;    /* array of power levels for each rate */
2064         u8 gain, dsp_atten;
2065         s8 power;
2066         u8 pwr_index, base_pwr_index, a_band;
2067         u8 i;
2068         int temperature;
2069
2070         /* save temperature reference,
2071          *   so we can determine next time to calibrate */
2072         temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2073         priv->last_temperature = temperature;
2074
2075         iwl3945_hw_reg_init_channel_groups(priv);
2076
2077         /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2078         for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2079              i++, ch_info++) {
2080                 a_band = iwl_legacy_is_channel_a_band(ch_info);
2081                 if (!iwl_legacy_is_channel_valid(ch_info))
2082                         continue;
2083
2084                 /* find this channel's channel group (*not* "band") index */
2085                 ch_info->group_index =
2086                         iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2087
2088                 /* Get this chnlgrp's rate->max/clip-powers table */
2089                 clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
2090
2091                 /* calculate power index *adjustment* value according to
2092                  *  diff between current temperature and factory temperature */
2093                 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2094                                 eeprom->groups[ch_info->group_index].
2095                                 temperature);
2096
2097                 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2098                                 ch_info->channel, delta_index, temperature +
2099                                 IWL_TEMP_CONVERT);
2100
2101                 /* set tx power value for all OFDM rates */
2102                 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2103                      rate_index++) {
2104                         s32 uninitialized_var(power_idx);
2105                         int rc;
2106
2107                         /* use channel group's clip-power table,
2108                          *   but don't exceed channel's max power */
2109                         s8 pwr = min(ch_info->max_power_avg,
2110                                      clip_pwrs[rate_index]);
2111
2112                         pwr_info = &ch_info->power_info[rate_index];
2113
2114                         /* get base (i.e. at factory-measured temperature)
2115                          *    power table index for this rate's power */
2116                         rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2117                                                          ch_info->group_index,
2118                                                          &power_idx);
2119                         if (rc) {
2120                                 IWL_ERR(priv, "Invalid power index\n");
2121                                 return rc;
2122                         }
2123                         pwr_info->base_power_index = (u8) power_idx;
2124
2125                         /* temperature compensate */
2126                         power_idx += delta_index;
2127
2128                         /* stay within range of gain table */
2129                         power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2130
2131                         /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2132                         pwr_info->requested_power = pwr;
2133                         pwr_info->power_table_index = (u8) power_idx;
2134                         pwr_info->tpc.tx_gain =
2135                             power_gain_table[a_band][power_idx].tx_gain;
2136                         pwr_info->tpc.dsp_atten =
2137                             power_gain_table[a_band][power_idx].dsp_atten;
2138                 }
2139
2140                 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2141                 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2142                 power = pwr_info->requested_power +
2143                         IWL_CCK_FROM_OFDM_POWER_DIFF;
2144                 pwr_index = pwr_info->power_table_index +
2145                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2146                 base_pwr_index = pwr_info->base_power_index +
2147                         IWL_CCK_FROM_OFDM_INDEX_DIFF;
2148
2149                 /* stay within table range */
2150                 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2151                 gain = power_gain_table[a_band][pwr_index].tx_gain;
2152                 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2153
2154                 /* fill each CCK rate's iwl3945_channel_power_info structure
2155                  * NOTE:  All CCK-rate Txpwrs are the same for a given chnl!
2156                  * NOTE:  CCK rates start at end of OFDM rates! */
2157                 for (rate_index = 0;
2158                      rate_index < IWL_CCK_RATES; rate_index++) {
2159                         pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2160                         pwr_info->requested_power = power;
2161                         pwr_info->power_table_index = pwr_index;
2162                         pwr_info->base_power_index = base_pwr_index;
2163                         pwr_info->tpc.tx_gain = gain;
2164                         pwr_info->tpc.dsp_atten = dsp_atten;
2165                 }
2166
2167                 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2168                 for (scan_tbl_index = 0;
2169                      scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2170                         s32 actual_index = (scan_tbl_index == 0) ?
2171                                 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2172                         iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2173                                 actual_index, clip_pwrs, ch_info, a_band);
2174                 }
2175         }
2176
2177         return 0;
2178 }
2179
2180 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2181 {
2182         int rc;
2183
2184         iwl_legacy_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2185         rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2186                         FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2187         if (rc < 0)
2188                 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2189
2190         return 0;
2191 }
2192
2193 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2194 {
2195         int txq_id = txq->q.id;
2196
2197         struct iwl3945_shared *shared_data = priv->_3945.shared_virt;
2198
2199         shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2200
2201         iwl_legacy_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2202         iwl_legacy_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2203
2204         iwl_legacy_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2205                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2206                 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2207                 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2208                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2209                 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2210
2211         /* fake read to flush all prev. writes */
2212         iwl_read32(priv, FH39_TSSR_CBB_BASE);
2213
2214         return 0;
2215 }
2216
2217 /*
2218  * HCMD utils
2219  */
2220 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2221 {
2222         switch (cmd_id) {
2223         case REPLY_RXON:
2224                 return sizeof(struct iwl3945_rxon_cmd);
2225         case POWER_TABLE_CMD:
2226                 return sizeof(struct iwl3945_powertable_cmd);
2227         default:
2228                 return len;
2229         }
2230 }
2231
2232
2233 static u16 iwl3945_build_addsta_hcmd(const struct iwl_legacy_addsta_cmd *cmd,
2234                                                                 u8 *data)
2235 {
2236         struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
2237         addsta->mode = cmd->mode;
2238         memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
2239         memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
2240         addsta->station_flags = cmd->station_flags;
2241         addsta->station_flags_msk = cmd->station_flags_msk;
2242         addsta->tid_disable_tx = cpu_to_le16(0);
2243         addsta->rate_n_flags = cmd->rate_n_flags;
2244         addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2245         addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2246         addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2247
2248         return (u16)sizeof(struct iwl3945_addsta_cmd);
2249 }
2250
2251 static int iwl3945_add_bssid_station(struct iwl_priv *priv,
2252                                      const u8 *addr, u8 *sta_id_r)
2253 {
2254         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2255         int ret;
2256         u8 sta_id;
2257         unsigned long flags;
2258
2259         if (sta_id_r)
2260                 *sta_id_r = IWL_INVALID_STATION;
2261
2262         ret = iwl_legacy_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
2263         if (ret) {
2264                 IWL_ERR(priv, "Unable to add station %pM\n", addr);
2265                 return ret;
2266         }
2267
2268         if (sta_id_r)
2269                 *sta_id_r = sta_id;
2270
2271         spin_lock_irqsave(&priv->sta_lock, flags);
2272         priv->stations[sta_id].used |= IWL_STA_LOCAL;
2273         spin_unlock_irqrestore(&priv->sta_lock, flags);
2274
2275         return 0;
2276 }
2277 static int iwl3945_manage_ibss_station(struct iwl_priv *priv,
2278                                        struct ieee80211_vif *vif, bool add)
2279 {
2280         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2281         int ret;
2282
2283         if (add) {
2284                 ret = iwl3945_add_bssid_station(priv, vif->bss_conf.bssid,
2285                                                 &vif_priv->ibss_bssid_sta_id);
2286                 if (ret)
2287                         return ret;
2288
2289                 iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id,
2290                                  (priv->band == IEEE80211_BAND_5GHZ) ?
2291                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP);
2292                 iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id);
2293
2294                 return 0;
2295         }
2296
2297         return iwl_legacy_remove_station(priv, vif_priv->ibss_bssid_sta_id,
2298                                   vif->bss_conf.bssid);
2299 }
2300
2301 /**
2302  * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2303  */
2304 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2305 {
2306         int rc, i, index, prev_index;
2307         struct iwl3945_rate_scaling_cmd rate_cmd = {
2308                 .reserved = {0, 0, 0},
2309         };
2310         struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2311
2312         for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2313                 index = iwl3945_rates[i].table_rs_index;
2314
2315                 table[index].rate_n_flags =
2316                         iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2317                 table[index].try_cnt = priv->retry_rate;
2318                 prev_index = iwl3945_get_prev_ieee_rate(i);
2319                 table[index].next_rate_index =
2320                                 iwl3945_rates[prev_index].table_rs_index;
2321         }
2322
2323         switch (priv->band) {
2324         case IEEE80211_BAND_5GHZ:
2325                 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2326                 /* If one of the following CCK rates is used,
2327                  * have it fall back to the 6M OFDM rate */
2328                 for (i = IWL_RATE_1M_INDEX_TABLE;
2329                         i <= IWL_RATE_11M_INDEX_TABLE; i++)
2330                         table[i].next_rate_index =
2331                           iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2332
2333                 /* Don't fall back to CCK rates */
2334                 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2335                                                 IWL_RATE_9M_INDEX_TABLE;
2336
2337                 /* Don't drop out of OFDM rates */
2338                 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2339                     iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2340                 break;
2341
2342         case IEEE80211_BAND_2GHZ:
2343                 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2344                 /* If an OFDM rate is used, have it fall back to the
2345                  * 1M CCK rates */
2346
2347                 if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2348                     iwl_legacy_is_associated(priv, IWL_RXON_CTX_BSS)) {
2349
2350                         index = IWL_FIRST_CCK_RATE;
2351                         for (i = IWL_RATE_6M_INDEX_TABLE;
2352                              i <= IWL_RATE_54M_INDEX_TABLE; i++)
2353                                 table[i].next_rate_index =
2354                                         iwl3945_rates[index].table_rs_index;
2355
2356                         index = IWL_RATE_11M_INDEX_TABLE;
2357                         /* CCK shouldn't fall back to OFDM... */
2358                         table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2359                 }
2360                 break;
2361
2362         default:
2363                 WARN_ON(1);
2364                 break;
2365         }
2366
2367         /* Update the rate scaling for control frame Tx */
2368         rate_cmd.table_id = 0;
2369         rc = iwl_legacy_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2370                               &rate_cmd);
2371         if (rc)
2372                 return rc;
2373
2374         /* Update the rate scaling for data frame Tx */
2375         rate_cmd.table_id = 1;
2376         return iwl_legacy_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2377                                 &rate_cmd);
2378 }
2379
2380 /* Called when initializing driver */
2381 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2382 {
2383         memset((void *)&priv->hw_params, 0,
2384                sizeof(struct iwl_hw_params));
2385
2386         priv->_3945.shared_virt =
2387                 dma_alloc_coherent(&priv->pci_dev->dev,
2388                                    sizeof(struct iwl3945_shared),
2389                                    &priv->_3945.shared_phys, GFP_KERNEL);
2390         if (!priv->_3945.shared_virt) {
2391                 IWL_ERR(priv, "failed to allocate pci memory\n");
2392                 return -ENOMEM;
2393         }
2394
2395         /* Assign number of Usable TX queues */
2396         priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
2397
2398         priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2399         priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K);
2400         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2401         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2402         priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2403         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL3945_BROADCAST_ID;
2404
2405         priv->sta_key_max_num = STA_KEY_MAX_NUM;
2406
2407         priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2408         priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
2409         priv->hw_params.beacon_time_tsf_bits = IWL3945_EXT_BEACON_TIME_POS;
2410
2411         return 0;
2412 }
2413
2414 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2415                           struct iwl3945_frame *frame, u8 rate)
2416 {
2417         struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2418         unsigned int frame_size;
2419
2420         tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2421         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2422
2423         tx_beacon_cmd->tx.sta_id =
2424                 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
2425         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2426
2427         frame_size = iwl3945_fill_beacon_frame(priv,
2428                                 tx_beacon_cmd->frame,
2429                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2430
2431         BUG_ON(frame_size > MAX_MPDU_SIZE);
2432         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2433
2434         tx_beacon_cmd->tx.rate = rate;
2435         tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2436                                       TX_CMD_FLG_TSF_MSK);
2437
2438         /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2439         tx_beacon_cmd->tx.supp_rates[0] =
2440                 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2441
2442         tx_beacon_cmd->tx.supp_rates[1] =
2443                 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2444
2445         return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2446 }
2447
2448 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2449 {
2450         priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2451         priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2452 }
2453
2454 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2455 {
2456         INIT_DELAYED_WORK(&priv->_3945.thermal_periodic,
2457                           iwl3945_bg_reg_txpower_periodic);
2458 }
2459
2460 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2461 {
2462         cancel_delayed_work(&priv->_3945.thermal_periodic);
2463 }
2464
2465 /* check contents of special bootstrap uCode SRAM */
2466 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2467  {
2468         __le32 *image = priv->ucode_boot.v_addr;
2469         u32 len = priv->ucode_boot.len;
2470         u32 reg;
2471         u32 val;
2472
2473         IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2474
2475         /* verify BSM SRAM contents */
2476         val = iwl_legacy_read_prph(priv, BSM_WR_DWCOUNT_REG);
2477         for (reg = BSM_SRAM_LOWER_BOUND;
2478              reg < BSM_SRAM_LOWER_BOUND + len;
2479              reg += sizeof(u32), image++) {
2480                 val = iwl_legacy_read_prph(priv, reg);
2481                 if (val != le32_to_cpu(*image)) {
2482                         IWL_ERR(priv, "BSM uCode verification failed at "
2483                                   "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2484                                   BSM_SRAM_LOWER_BOUND,
2485                                   reg - BSM_SRAM_LOWER_BOUND, len,
2486                                   val, le32_to_cpu(*image));
2487                         return -EIO;
2488                 }
2489         }
2490
2491         IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2492
2493         return 0;
2494 }
2495
2496
2497 /******************************************************************************
2498  *
2499  * EEPROM related functions
2500  *
2501  ******************************************************************************/
2502
2503 /*
2504  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2505  * embedded controller) as EEPROM reader; each read is a series of pulses
2506  * to/from the EEPROM chip, not a single event, so even reads could conflict
2507  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
2508  * simply claims ownership, which should be safe when this function is called
2509  * (i.e. before loading uCode!).
2510  */
2511 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2512 {
2513         _iwl_legacy_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2514         return 0;
2515 }
2516
2517
2518 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2519 {
2520         return;
2521 }
2522
2523  /**
2524   * iwl3945_load_bsm - Load bootstrap instructions
2525   *
2526   * BSM operation:
2527   *
2528   * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2529   * in special SRAM that does not power down during RFKILL.  When powering back
2530   * up after power-saving sleeps (or during initial uCode load), the BSM loads
2531   * the bootstrap program into the on-board processor, and starts it.
2532   *
2533   * The bootstrap program loads (via DMA) instructions and data for a new
2534   * program from host DRAM locations indicated by the host driver in the
2535   * BSM_DRAM_* registers.  Once the new program is loaded, it starts
2536   * automatically.
2537   *
2538   * When initializing the NIC, the host driver points the BSM to the
2539   * "initialize" uCode image.  This uCode sets up some internal data, then
2540   * notifies host via "initialize alive" that it is complete.
2541   *
2542   * The host then replaces the BSM_DRAM_* pointer values to point to the
2543   * normal runtime uCode instructions and a backup uCode data cache buffer
2544   * (filled initially with starting data values for the on-board processor),
2545   * then triggers the "initialize" uCode to load and launch the runtime uCode,
2546   * which begins normal operation.
2547   *
2548   * When doing a power-save shutdown, runtime uCode saves data SRAM into
2549   * the backup data cache in DRAM before SRAM is powered down.
2550   *
2551   * When powering back up, the BSM loads the bootstrap program.  This reloads
2552   * the runtime uCode instructions and the backup data cache into SRAM,
2553   * and re-launches the runtime uCode from where it left off.
2554   */
2555 static int iwl3945_load_bsm(struct iwl_priv *priv)
2556 {
2557         __le32 *image = priv->ucode_boot.v_addr;
2558         u32 len = priv->ucode_boot.len;
2559         dma_addr_t pinst;
2560         dma_addr_t pdata;
2561         u32 inst_len;
2562         u32 data_len;
2563         int rc;
2564         int i;
2565         u32 done;
2566         u32 reg_offset;
2567
2568         IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2569
2570         /* make sure bootstrap program is no larger than BSM's SRAM size */
2571         if (len > IWL39_MAX_BSM_SIZE)
2572                 return -EINVAL;
2573
2574         /* Tell bootstrap uCode where to find the "Initialize" uCode
2575         *   in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2576         * NOTE:  iwl3945_initialize_alive_start() will replace these values,
2577         *        after the "initialize" uCode has run, to point to
2578         *        runtime/protocol instructions and backup data cache. */
2579         pinst = priv->ucode_init.p_addr;
2580         pdata = priv->ucode_init_data.p_addr;
2581         inst_len = priv->ucode_init.len;
2582         data_len = priv->ucode_init_data.len;
2583
2584         iwl_legacy_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2585         iwl_legacy_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2586         iwl_legacy_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2587         iwl_legacy_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2588
2589         /* Fill BSM memory with bootstrap instructions */
2590         for (reg_offset = BSM_SRAM_LOWER_BOUND;
2591              reg_offset < BSM_SRAM_LOWER_BOUND + len;
2592              reg_offset += sizeof(u32), image++)
2593                 _iwl_legacy_write_prph(priv, reg_offset,
2594                                           le32_to_cpu(*image));
2595
2596         rc = iwl3945_verify_bsm(priv);
2597         if (rc)
2598                 return rc;
2599
2600         /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2601         iwl_legacy_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2602         iwl_legacy_write_prph(priv, BSM_WR_MEM_DST_REG,
2603                                  IWL39_RTC_INST_LOWER_BOUND);
2604         iwl_legacy_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2605
2606         /* Load bootstrap code into instruction SRAM now,
2607          *   to prepare to load "initialize" uCode */
2608         iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
2609                 BSM_WR_CTRL_REG_BIT_START);
2610
2611         /* Wait for load of bootstrap uCode to finish */
2612         for (i = 0; i < 100; i++) {
2613                 done = iwl_legacy_read_prph(priv, BSM_WR_CTRL_REG);
2614                 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2615                         break;
2616                 udelay(10);
2617         }
2618         if (i < 100)
2619                 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2620         else {
2621                 IWL_ERR(priv, "BSM write did not complete!\n");
2622                 return -EIO;
2623         }
2624
2625         /* Enable future boot loads whenever power management unit triggers it
2626          *   (e.g. when powering back up after power-save shutdown) */
2627         iwl_legacy_write_prph(priv, BSM_WR_CTRL_REG,
2628                 BSM_WR_CTRL_REG_BIT_START_EN);
2629
2630         return 0;
2631 }
2632
2633 static struct iwl_hcmd_ops iwl3945_hcmd = {
2634         .rxon_assoc = iwl3945_send_rxon_assoc,
2635         .commit_rxon = iwl3945_commit_rxon,
2636 };
2637
2638 static struct iwl_lib_ops iwl3945_lib = {
2639         .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2640         .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2641         .txq_init = iwl3945_hw_tx_queue_init,
2642         .load_ucode = iwl3945_load_bsm,
2643         .dump_nic_event_log = iwl3945_dump_nic_event_log,
2644         .dump_nic_error_log = iwl3945_dump_nic_error_log,
2645         .apm_ops = {
2646                 .init = iwl3945_apm_init,
2647                 .config = iwl3945_nic_config,
2648         },
2649         .eeprom_ops = {
2650                 .regulatory_bands = {
2651                         EEPROM_REGULATORY_BAND_1_CHANNELS,
2652                         EEPROM_REGULATORY_BAND_2_CHANNELS,
2653                         EEPROM_REGULATORY_BAND_3_CHANNELS,
2654                         EEPROM_REGULATORY_BAND_4_CHANNELS,
2655                         EEPROM_REGULATORY_BAND_5_CHANNELS,
2656                         EEPROM_REGULATORY_BAND_NO_HT40,
2657                         EEPROM_REGULATORY_BAND_NO_HT40,
2658                 },
2659                 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2660                 .release_semaphore = iwl3945_eeprom_release_semaphore,
2661         },
2662         .send_tx_power  = iwl3945_send_tx_power,
2663         .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2664
2665         .debugfs_ops = {
2666                 .rx_stats_read = iwl3945_ucode_rx_stats_read,
2667                 .tx_stats_read = iwl3945_ucode_tx_stats_read,
2668                 .general_stats_read = iwl3945_ucode_general_stats_read,
2669         },
2670 };
2671
2672 static const struct iwl_legacy_ops iwl3945_legacy_ops = {
2673         .post_associate = iwl3945_post_associate,
2674         .config_ap = iwl3945_config_ap,
2675         .manage_ibss_station = iwl3945_manage_ibss_station,
2676 };
2677
2678 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2679         .get_hcmd_size = iwl3945_get_hcmd_size,
2680         .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2681         .request_scan = iwl3945_request_scan,
2682         .post_scan = iwl3945_post_scan,
2683 };
2684
2685 static const struct iwl_ops iwl3945_ops = {
2686         .lib = &iwl3945_lib,
2687         .hcmd = &iwl3945_hcmd,
2688         .utils = &iwl3945_hcmd_utils,
2689         .led = &iwl3945_led_ops,
2690         .legacy = &iwl3945_legacy_ops,
2691         .ieee80211_ops = &iwl3945_hw_ops,
2692 };
2693
2694 static struct iwl_base_params iwl3945_base_params = {
2695         .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2696         .num_of_queues = IWL39_NUM_QUEUES,
2697         .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL,
2698         .set_l0s = false,
2699         .use_bsm = true,
2700         .led_compensation = 64,
2701         .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
2702         .wd_timeout = IWL_DEF_WD_TIMEOUT,
2703         .max_event_log_size = 512,
2704 };
2705
2706 static struct iwl_cfg iwl3945_bg_cfg = {
2707         .name = "3945BG",
2708         .fw_name_pre = IWL3945_FW_PRE,
2709         .ucode_api_max = IWL3945_UCODE_API_MAX,
2710         .ucode_api_min = IWL3945_UCODE_API_MIN,
2711         .sku = IWL_SKU_G,
2712         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2713         .ops = &iwl3945_ops,
2714         .mod_params = &iwl3945_mod_params,
2715         .base_params = &iwl3945_base_params,
2716         .led_mode = IWL_LED_BLINK,
2717 };
2718
2719 static struct iwl_cfg iwl3945_abg_cfg = {
2720         .name = "3945ABG",
2721         .fw_name_pre = IWL3945_FW_PRE,
2722         .ucode_api_max = IWL3945_UCODE_API_MAX,
2723         .ucode_api_min = IWL3945_UCODE_API_MIN,
2724         .sku = IWL_SKU_A|IWL_SKU_G,
2725         .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2726         .ops = &iwl3945_ops,
2727         .mod_params = &iwl3945_mod_params,
2728         .base_params = &iwl3945_base_params,
2729         .led_mode = IWL_LED_BLINK,
2730 };
2731
2732 DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids) = {
2733         {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2734         {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2735         {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2736         {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2737         {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2738         {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2739         {0}
2740 };
2741
2742 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);