1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
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.
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
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
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
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>
44 #include "iwl-3945-fh.h"
45 #include "iwl-commands.h"
48 #include "iwl-eeprom.h"
50 #include "iwl-helpers.h"
52 #include "iwl-3945-led.h"
53 #include "iwl-3945-debugfs.h"
54 #include "iwl-legacy.h"
56 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
57 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
58 IWL_RATE_##r##M_IEEE, \
59 IWL_RATE_##ip##M_INDEX, \
60 IWL_RATE_##in##M_INDEX, \
61 IWL_RATE_##rp##M_INDEX, \
62 IWL_RATE_##rn##M_INDEX, \
63 IWL_RATE_##pp##M_INDEX, \
64 IWL_RATE_##np##M_INDEX, \
65 IWL_RATE_##r##M_INDEX_TABLE, \
66 IWL_RATE_##ip##M_INDEX_TABLE }
70 * rate, prev rate, next rate, prev tgg rate, next tgg rate
72 * If there isn't a valid next or previous rate then INV is used which
73 * maps to IWL_RATE_INVALID
76 const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
77 IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */
78 IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
79 IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
80 IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
81 IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
82 IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
83 IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
84 IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
85 IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
86 IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
87 IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
88 IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
91 static inline u8 iwl3945_get_prev_ieee_rate(u8 rate_index)
93 u8 rate = iwl3945_rates[rate_index].prev_ieee;
95 if (rate == IWL_RATE_INVALID)
100 /* 1 = enable the iwl3945_disable_events() function */
101 #define IWL_EVT_DISABLE (0)
102 #define IWL_EVT_DISABLE_SIZE (1532/32)
105 * iwl3945_disable_events - Disable selected events in uCode event log
107 * Disable an event by writing "1"s into "disable"
108 * bitmap in SRAM. Bit position corresponds to Event # (id/type).
109 * Default values of 0 enable uCode events to be logged.
110 * Use for only special debugging. This function is just a placeholder as-is,
111 * you'll need to provide the special bits! ...
112 * ... and set IWL_EVT_DISABLE to 1. */
113 void iwl3945_disable_events(struct iwl_priv *priv)
116 u32 base; /* SRAM address of event log header */
117 u32 disable_ptr; /* SRAM address of event-disable bitmap array */
118 u32 array_size; /* # of u32 entries in array */
119 static const u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
120 0x00000000, /* 31 - 0 Event id numbers */
121 0x00000000, /* 63 - 32 */
122 0x00000000, /* 95 - 64 */
123 0x00000000, /* 127 - 96 */
124 0x00000000, /* 159 - 128 */
125 0x00000000, /* 191 - 160 */
126 0x00000000, /* 223 - 192 */
127 0x00000000, /* 255 - 224 */
128 0x00000000, /* 287 - 256 */
129 0x00000000, /* 319 - 288 */
130 0x00000000, /* 351 - 320 */
131 0x00000000, /* 383 - 352 */
132 0x00000000, /* 415 - 384 */
133 0x00000000, /* 447 - 416 */
134 0x00000000, /* 479 - 448 */
135 0x00000000, /* 511 - 480 */
136 0x00000000, /* 543 - 512 */
137 0x00000000, /* 575 - 544 */
138 0x00000000, /* 607 - 576 */
139 0x00000000, /* 639 - 608 */
140 0x00000000, /* 671 - 640 */
141 0x00000000, /* 703 - 672 */
142 0x00000000, /* 735 - 704 */
143 0x00000000, /* 767 - 736 */
144 0x00000000, /* 799 - 768 */
145 0x00000000, /* 831 - 800 */
146 0x00000000, /* 863 - 832 */
147 0x00000000, /* 895 - 864 */
148 0x00000000, /* 927 - 896 */
149 0x00000000, /* 959 - 928 */
150 0x00000000, /* 991 - 960 */
151 0x00000000, /* 1023 - 992 */
152 0x00000000, /* 1055 - 1024 */
153 0x00000000, /* 1087 - 1056 */
154 0x00000000, /* 1119 - 1088 */
155 0x00000000, /* 1151 - 1120 */
156 0x00000000, /* 1183 - 1152 */
157 0x00000000, /* 1215 - 1184 */
158 0x00000000, /* 1247 - 1216 */
159 0x00000000, /* 1279 - 1248 */
160 0x00000000, /* 1311 - 1280 */
161 0x00000000, /* 1343 - 1312 */
162 0x00000000, /* 1375 - 1344 */
163 0x00000000, /* 1407 - 1376 */
164 0x00000000, /* 1439 - 1408 */
165 0x00000000, /* 1471 - 1440 */
166 0x00000000, /* 1503 - 1472 */
169 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
170 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
171 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
175 disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32)));
176 array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32)));
178 if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
179 IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
181 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
182 iwl_write_targ_mem(priv,
183 disable_ptr + (i * sizeof(u32)),
187 IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
188 IWL_DEBUG_INFO(priv, " by writing \"1\"s into disable bitmap\n");
189 IWL_DEBUG_INFO(priv, " in SRAM at 0x%x, size %d u32s\n",
190 disable_ptr, array_size);
195 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
199 for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++)
200 if (iwl3945_rates[idx].plcp == plcp)
205 #ifdef CONFIG_IWLWIFI_DEBUG
206 #define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
208 static const char *iwl3945_get_tx_fail_reason(u32 status)
210 switch (status & TX_STATUS_MSK) {
211 case TX_3945_STATUS_SUCCESS:
213 TX_STATUS_ENTRY(SHORT_LIMIT);
214 TX_STATUS_ENTRY(LONG_LIMIT);
215 TX_STATUS_ENTRY(FIFO_UNDERRUN);
216 TX_STATUS_ENTRY(MGMNT_ABORT);
217 TX_STATUS_ENTRY(NEXT_FRAG);
218 TX_STATUS_ENTRY(LIFE_EXPIRE);
219 TX_STATUS_ENTRY(DEST_PS);
220 TX_STATUS_ENTRY(ABORTED);
221 TX_STATUS_ENTRY(BT_RETRY);
222 TX_STATUS_ENTRY(STA_INVALID);
223 TX_STATUS_ENTRY(FRAG_DROPPED);
224 TX_STATUS_ENTRY(TID_DISABLE);
225 TX_STATUS_ENTRY(FRAME_FLUSHED);
226 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
227 TX_STATUS_ENTRY(TX_LOCKED);
228 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
234 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
241 * get ieee prev rate from rate scale table.
242 * for A and B mode we need to overright prev
245 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
247 int next_rate = iwl3945_get_prev_ieee_rate(rate);
249 switch (priv->band) {
250 case IEEE80211_BAND_5GHZ:
251 if (rate == IWL_RATE_12M_INDEX)
252 next_rate = IWL_RATE_9M_INDEX;
253 else if (rate == IWL_RATE_6M_INDEX)
254 next_rate = IWL_RATE_6M_INDEX;
256 case IEEE80211_BAND_2GHZ:
257 if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
258 iwl_is_associated(priv, IWL_RXON_CTX_BSS)) {
259 if (rate == IWL_RATE_11M_INDEX)
260 next_rate = IWL_RATE_5M_INDEX;
273 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
275 * When FW advances 'R' index, all entries between old and new 'R' index
276 * need to be reclaimed. As result, some free space forms. If there is
277 * enough free space (> low mark), wake the stack that feeds us.
279 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
280 int txq_id, int index)
282 struct iwl_tx_queue *txq = &priv->txq[txq_id];
283 struct iwl_queue *q = &txq->q;
284 struct iwl_tx_info *tx_info;
286 BUG_ON(txq_id == IWL39_CMD_QUEUE_NUM);
288 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
289 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
291 tx_info = &txq->txb[txq->q.read_ptr];
292 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb);
294 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
297 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
298 (txq_id != IWL39_CMD_QUEUE_NUM) &&
299 priv->mac80211_registered)
300 iwl_wake_queue(priv, txq);
304 * iwl3945_rx_reply_tx - Handle Tx response
306 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
307 struct iwl_rx_mem_buffer *rxb)
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);
320 if ((index >= txq->q.n_bd) || (iwl_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,
328 txq->time_stamp = jiffies;
329 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb);
330 ieee80211_tx_info_clear_status(info);
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;
337 fail = tx_resp->failure_frame;
339 info->status.rates[0].idx = rate_idx;
340 info->status.rates[0].count = fail + 1; /* add final attempt */
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;
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);
350 IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
351 iwl3945_tx_queue_reclaim(priv, txq_id, index);
353 if (status & TX_ABORT_REQUIRED_MSK)
354 IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n");
359 /*****************************************************************************
361 * Intel PRO/Wireless 3945ABG/BG Network Connection
363 * RX handler implementations
365 *****************************************************************************/
366 #ifdef CONFIG_IWLWIFI_DEBUGFS
368 * based on the assumption of all statistics counter are in DWORD
369 * FIXME: This function is for debugging, do not deal with
370 * the case of counters roll-over.
372 static void iwl3945_accumulative_statistics(struct iwl_priv *priv,
378 u32 *delta, *max_delta;
380 prev_stats = (__le32 *)&priv->_3945.statistics;
381 accum_stats = (u32 *)&priv->_3945.accum_statistics;
382 delta = (u32 *)&priv->_3945.delta_statistics;
383 max_delta = (u32 *)&priv->_3945.max_delta;
385 for (i = sizeof(__le32); i < sizeof(struct iwl3945_notif_statistics);
386 i += sizeof(__le32), stats++, prev_stats++, delta++,
387 max_delta++, accum_stats++) {
388 if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {
389 *delta = (le32_to_cpu(*stats) -
390 le32_to_cpu(*prev_stats));
391 *accum_stats += *delta;
392 if (*delta > *max_delta)
397 /* reset accumulative statistics for "no-counter" type statistics */
398 priv->_3945.accum_statistics.general.temperature =
399 priv->_3945.statistics.general.temperature;
400 priv->_3945.accum_statistics.general.ttl_timestamp =
401 priv->_3945.statistics.general.ttl_timestamp;
406 * iwl3945_good_plcp_health - checks for plcp error.
408 * When the plcp error is exceeding the thresholds, reset the radio
409 * to improve the throughput.
411 static bool iwl3945_good_plcp_health(struct iwl_priv *priv,
412 struct iwl_rx_packet *pkt)
415 struct iwl3945_notif_statistics current_stat;
416 int combined_plcp_delta;
417 unsigned int plcp_msec;
418 unsigned long plcp_received_jiffies;
420 if (priv->cfg->base_params->plcp_delta_threshold ==
421 IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
422 IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
425 memcpy(¤t_stat, pkt->u.raw, sizeof(struct
426 iwl3945_notif_statistics));
428 * check for plcp_err and trigger radio reset if it exceeds
429 * the plcp error threshold plcp_delta.
431 plcp_received_jiffies = jiffies;
432 plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -
433 (long) priv->plcp_jiffies);
434 priv->plcp_jiffies = plcp_received_jiffies;
436 * check to make sure plcp_msec is not 0 to prevent division
440 combined_plcp_delta =
441 (le32_to_cpu(current_stat.rx.ofdm.plcp_err) -
442 le32_to_cpu(priv->_3945.statistics.rx.ofdm.plcp_err));
444 if ((combined_plcp_delta > 0) &&
445 ((combined_plcp_delta * 100) / plcp_msec) >
446 priv->cfg->base_params->plcp_delta_threshold) {
448 * if plcp_err exceed the threshold, the following
449 * data is printed in csv format:
450 * Text: plcp_err exceeded %d,
451 * Received ofdm.plcp_err,
452 * Current ofdm.plcp_err,
453 * combined_plcp_delta,
456 IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "
457 "%u, %d, %u mSecs\n",
458 priv->cfg->base_params->plcp_delta_threshold,
459 le32_to_cpu(current_stat.rx.ofdm.plcp_err),
460 combined_plcp_delta, plcp_msec);
462 * Reset the RF radio due to the high plcp
471 void iwl3945_hw_rx_statistics(struct iwl_priv *priv,
472 struct iwl_rx_mem_buffer *rxb)
474 struct iwl_rx_packet *pkt = rxb_addr(rxb);
476 IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
477 (int)sizeof(struct iwl3945_notif_statistics),
478 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
479 #ifdef CONFIG_IWLWIFI_DEBUGFS
480 iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw);
482 iwl_recover_from_statistics(priv, pkt);
484 memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics));
487 void iwl3945_reply_statistics(struct iwl_priv *priv,
488 struct iwl_rx_mem_buffer *rxb)
490 struct iwl_rx_packet *pkt = rxb_addr(rxb);
491 __le32 *flag = (__le32 *)&pkt->u.raw;
493 if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) {
494 #ifdef CONFIG_IWLWIFI_DEBUGFS
495 memset(&priv->_3945.accum_statistics, 0,
496 sizeof(struct iwl3945_notif_statistics));
497 memset(&priv->_3945.delta_statistics, 0,
498 sizeof(struct iwl3945_notif_statistics));
499 memset(&priv->_3945.max_delta, 0,
500 sizeof(struct iwl3945_notif_statistics));
502 IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
504 iwl3945_hw_rx_statistics(priv, rxb);
508 /******************************************************************************
510 * Misc. internal state and helper functions
512 ******************************************************************************/
514 /* This is necessary only for a number of statistics, see the caller. */
515 static int iwl3945_is_network_packet(struct iwl_priv *priv,
516 struct ieee80211_hdr *header)
518 /* Filter incoming packets to determine if they are targeted toward
519 * this network, discarding packets coming from ourselves */
520 switch (priv->iw_mode) {
521 case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */
522 /* packets to our IBSS update information */
523 return !compare_ether_addr(header->addr3, priv->bssid);
524 case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
525 /* packets to our IBSS update information */
526 return !compare_ether_addr(header->addr2, priv->bssid);
532 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
533 struct iwl_rx_mem_buffer *rxb,
534 struct ieee80211_rx_status *stats)
536 struct iwl_rx_packet *pkt = rxb_addr(rxb);
537 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
538 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
539 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
540 u16 len = le16_to_cpu(rx_hdr->len);
542 __le16 fc = hdr->frame_control;
544 /* We received data from the HW, so stop the watchdog */
545 if (unlikely(len + IWL39_RX_FRAME_SIZE >
546 PAGE_SIZE << priv->hw_params.rx_page_order)) {
547 IWL_DEBUG_DROP(priv, "Corruption detected!\n");
551 /* We only process data packets if the interface is open */
552 if (unlikely(!priv->is_open)) {
553 IWL_DEBUG_DROP_LIMIT(priv,
554 "Dropping packet while interface is not open.\n");
558 skb = dev_alloc_skb(128);
560 IWL_ERR(priv, "dev_alloc_skb failed\n");
564 if (!iwl3945_mod_params.sw_crypto)
565 iwl_set_decrypted_flag(priv,
566 (struct ieee80211_hdr *)rxb_addr(rxb),
567 le32_to_cpu(rx_end->status), stats);
569 skb_add_rx_frag(skb, 0, rxb->page,
570 (void *)rx_hdr->payload - (void *)pkt, len);
572 iwl_update_stats(priv, false, fc, len);
573 memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
575 ieee80211_rx(priv->hw, skb);
576 priv->alloc_rxb_page--;
580 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
582 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
583 struct iwl_rx_mem_buffer *rxb)
585 struct ieee80211_hdr *header;
586 struct ieee80211_rx_status rx_status;
587 struct iwl_rx_packet *pkt = rxb_addr(rxb);
588 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
589 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
590 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
591 u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg);
592 u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff);
596 rx_status.mactime = le64_to_cpu(rx_end->timestamp);
597 rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
598 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
600 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel),
603 rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
604 if (rx_status.band == IEEE80211_BAND_5GHZ)
605 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
607 rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) &
608 RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
610 /* set the preamble flag if appropriate */
611 if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
612 rx_status.flag |= RX_FLAG_SHORTPRE;
614 if ((unlikely(rx_stats->phy_count > 20))) {
615 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
616 rx_stats->phy_count);
620 if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
621 || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
622 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
628 /* Convert 3945's rssi indicator to dBm */
629 rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
631 IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n",
632 rx_status.signal, rx_stats_sig_avg,
633 rx_stats_noise_diff);
635 header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
637 network_packet = iwl3945_is_network_packet(priv, header);
639 IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
640 network_packet ? '*' : ' ',
641 le16_to_cpu(rx_hdr->channel),
642 rx_status.signal, rx_status.signal,
645 iwl_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len), header);
647 if (network_packet) {
648 priv->_3945.last_beacon_time =
649 le32_to_cpu(rx_end->beacon_timestamp);
650 priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp);
651 priv->_3945.last_rx_rssi = rx_status.signal;
654 iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
657 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
658 struct iwl_tx_queue *txq,
659 dma_addr_t addr, u16 len, u8 reset, u8 pad)
663 struct iwl3945_tfd *tfd, *tfd_tmp;
666 tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
667 tfd = &tfd_tmp[q->write_ptr];
670 memset(tfd, 0, sizeof(*tfd));
672 count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
674 if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
675 IWL_ERR(priv, "Error can not send more than %d chunks\n",
680 tfd->tbs[count].addr = cpu_to_le32(addr);
681 tfd->tbs[count].len = cpu_to_le32(len);
685 tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
686 TFD_CTL_PAD_SET(pad));
692 * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
694 * Does NOT advance any indexes
696 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
698 struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
699 int index = txq->q.read_ptr;
700 struct iwl3945_tfd *tfd = &tfd_tmp[index];
701 struct pci_dev *dev = priv->pci_dev;
706 counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
707 if (counter > NUM_TFD_CHUNKS) {
708 IWL_ERR(priv, "Too many chunks: %i\n", counter);
709 /* @todo issue fatal error, it is quite serious situation */
715 pci_unmap_single(dev,
716 dma_unmap_addr(&txq->meta[index], mapping),
717 dma_unmap_len(&txq->meta[index], len),
720 /* unmap chunks if any */
722 for (i = 1; i < counter; i++)
723 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
724 le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
730 skb = txq->txb[txq->q.read_ptr].skb;
732 /* can be called from irqs-disabled context */
734 dev_kfree_skb_any(skb);
735 txq->txb[txq->q.read_ptr].skb = NULL;
741 * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
744 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv,
745 struct iwl_device_cmd *cmd,
746 struct ieee80211_tx_info *info,
747 struct ieee80211_hdr *hdr,
748 int sta_id, int tx_id)
750 u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
751 u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945);
757 __le16 fc = hdr->frame_control;
758 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
760 rate = iwl3945_rates[rate_index].plcp;
761 tx_flags = tx_cmd->tx_flags;
763 /* We need to figure out how to get the sta->supp_rates while
764 * in this running context */
765 rate_mask = IWL_RATES_MASK;
768 /* Set retry limit on DATA packets and Probe Responses*/
769 if (ieee80211_is_probe_resp(fc))
770 data_retry_limit = 3;
772 data_retry_limit = IWL_DEFAULT_TX_RETRY;
773 tx_cmd->data_retry_limit = data_retry_limit;
775 if (tx_id >= IWL39_CMD_QUEUE_NUM)
780 if (data_retry_limit < rts_retry_limit)
781 rts_retry_limit = data_retry_limit;
782 tx_cmd->rts_retry_limit = rts_retry_limit;
785 tx_cmd->tx_flags = tx_flags;
788 tx_cmd->supp_rates[0] =
789 ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
792 tx_cmd->supp_rates[1] = (rate_mask & 0xF);
794 IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
795 "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
796 tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags),
797 tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]);
800 static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate)
802 unsigned long flags_spin;
803 struct iwl_station_entry *station;
805 if (sta_id == IWL_INVALID_STATION)
806 return IWL_INVALID_STATION;
808 spin_lock_irqsave(&priv->sta_lock, flags_spin);
809 station = &priv->stations[sta_id];
811 station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
812 station->sta.rate_n_flags = cpu_to_le16(tx_rate);
813 station->sta.mode = STA_CONTROL_MODIFY_MSK;
814 iwl_send_add_sta(priv, &station->sta, CMD_ASYNC);
815 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
817 IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
822 static void iwl3945_set_pwr_vmain(struct iwl_priv *priv)
825 * (for documentation purposes)
826 * to set power to V_AUX, do
828 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
829 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
830 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
831 ~APMG_PS_CTRL_MSK_PWR_SRC);
833 iwl_poll_bit(priv, CSR_GPIO_IN,
834 CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
835 CSR_GPIO_IN_BIT_AUX_POWER, 5000);
839 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
840 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
841 ~APMG_PS_CTRL_MSK_PWR_SRC);
843 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
844 CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */
847 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
849 iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->bd_dma);
850 iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
851 iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
852 iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
853 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
854 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
855 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
856 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
857 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
858 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
859 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
860 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
862 /* fake read to flush all prev I/O */
863 iwl_read_direct32(priv, FH39_RSSR_CTRL);
868 static int iwl3945_tx_reset(struct iwl_priv *priv)
872 iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
875 iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
877 /* all 6 fifo are active */
878 iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
880 iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
881 iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
882 iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
883 iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
885 iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
886 priv->_3945.shared_phys);
888 iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
889 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
890 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
891 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
892 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
893 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
894 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
895 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
902 * iwl3945_txq_ctx_reset - Reset TX queue context
904 * Destroys all DMA structures and initialize them again
906 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
909 int txq_id, slots_num;
911 iwl3945_hw_txq_ctx_free(priv);
913 /* allocate tx queue structure */
914 rc = iwl_alloc_txq_mem(priv);
919 rc = iwl3945_tx_reset(priv);
924 for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
925 slots_num = (txq_id == IWL39_CMD_QUEUE_NUM) ?
926 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
927 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
930 IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
938 iwl3945_hw_txq_ctx_free(priv);
944 * Start up 3945's basic functionality after it has been reset
945 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
946 * NOTE: This does not load uCode nor start the embedded processor
948 static int iwl3945_apm_init(struct iwl_priv *priv)
950 int ret = iwl_apm_init(priv);
952 /* Clear APMG (NIC's internal power management) interrupts */
953 iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
954 iwl_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF);
956 /* Reset radio chip */
957 iwl_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ);
959 iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ);
964 static void iwl3945_nic_config(struct iwl_priv *priv)
966 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
970 spin_lock_irqsave(&priv->lock, flags);
972 /* Determine HW type */
973 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
975 IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
977 if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
978 IWL_DEBUG_INFO(priv, "RTP type\n");
979 else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
980 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
981 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
982 CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
984 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
985 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
986 CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
989 if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
990 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
991 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
992 CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
994 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
996 if ((eeprom->board_revision & 0xF0) == 0xD0) {
997 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
998 eeprom->board_revision);
999 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1000 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1002 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1003 eeprom->board_revision);
1004 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1005 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1008 if (eeprom->almgor_m_version <= 1) {
1009 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1010 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1011 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
1012 eeprom->almgor_m_version);
1014 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
1015 eeprom->almgor_m_version);
1016 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1017 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1019 spin_unlock_irqrestore(&priv->lock, flags);
1021 if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1022 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
1024 if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1025 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
1028 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1031 unsigned long flags;
1032 struct iwl_rx_queue *rxq = &priv->rxq;
1034 spin_lock_irqsave(&priv->lock, flags);
1035 priv->cfg->ops->lib->apm_ops.init(priv);
1036 spin_unlock_irqrestore(&priv->lock, flags);
1038 iwl3945_set_pwr_vmain(priv);
1040 priv->cfg->ops->lib->apm_ops.config(priv);
1042 /* Allocate the RX queue, or reset if it is already allocated */
1044 rc = iwl_rx_queue_alloc(priv);
1046 IWL_ERR(priv, "Unable to initialize Rx queue\n");
1050 iwl3945_rx_queue_reset(priv, rxq);
1052 iwl3945_rx_replenish(priv);
1054 iwl3945_rx_init(priv, rxq);
1057 /* Look at using this instead:
1058 rxq->need_update = 1;
1059 iwl_rx_queue_update_write_ptr(priv, rxq);
1062 iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1064 rc = iwl3945_txq_ctx_reset(priv);
1068 set_bit(STATUS_INIT, &priv->status);
1074 * iwl3945_hw_txq_ctx_free - Free TXQ Context
1076 * Destroy all TX DMA queues and structures
1078 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1084 for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
1086 if (txq_id == IWL39_CMD_QUEUE_NUM)
1087 iwl_cmd_queue_free(priv);
1089 iwl_tx_queue_free(priv, txq_id);
1091 /* free tx queue structure */
1092 iwl_free_txq_mem(priv);
1095 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1100 iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1101 iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0);
1103 /* reset TFD queues */
1104 for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
1105 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1106 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1107 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1111 iwl3945_hw_txq_ctx_free(priv);
1115 * iwl3945_hw_reg_adjust_power_by_temp
1116 * return index delta into power gain settings table
1118 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1120 return (new_reading - old_reading) * (-11) / 100;
1124 * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1126 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1128 return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1131 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1133 return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1137 * iwl3945_hw_reg_txpower_get_temperature
1138 * get the current temperature by reading from NIC
1140 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1142 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1145 temperature = iwl3945_hw_get_temperature(priv);
1147 /* driver's okay range is -260 to +25.
1148 * human readable okay range is 0 to +285 */
1149 IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1151 /* handle insane temp reading */
1152 if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1153 IWL_ERR(priv, "Error bad temperature value %d\n", temperature);
1155 /* if really really hot(?),
1156 * substitute the 3rd band/group's temp measured at factory */
1157 if (priv->last_temperature > 100)
1158 temperature = eeprom->groups[2].temperature;
1159 else /* else use most recent "sane" value from driver */
1160 temperature = priv->last_temperature;
1163 return temperature; /* raw, not "human readable" */
1166 /* Adjust Txpower only if temperature variance is greater than threshold.
1168 * Both are lower than older versions' 9 degrees */
1169 #define IWL_TEMPERATURE_LIMIT_TIMER 6
1172 * is_temp_calib_needed - determines if new calibration is needed
1174 * records new temperature in tx_mgr->temperature.
1175 * replaces tx_mgr->last_temperature *only* if calib needed
1176 * (assumes caller will actually do the calibration!). */
1177 static int is_temp_calib_needed(struct iwl_priv *priv)
1181 priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1182 temp_diff = priv->temperature - priv->last_temperature;
1184 /* get absolute value */
1185 if (temp_diff < 0) {
1186 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1187 temp_diff = -temp_diff;
1188 } else if (temp_diff == 0)
1189 IWL_DEBUG_POWER(priv, "Same temp,\n");
1191 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1193 /* if we don't need calibration, *don't* update last_temperature */
1194 if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1195 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1199 IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1201 /* assume that caller will actually do calib ...
1202 * update the "last temperature" value */
1203 priv->last_temperature = priv->temperature;
1207 #define IWL_MAX_GAIN_ENTRIES 78
1208 #define IWL_CCK_FROM_OFDM_POWER_DIFF -5
1209 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1211 /* radio and DSP power table, each step is 1/2 dB.
1212 * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1213 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1215 {251, 127}, /* 2.4 GHz, highest power */
1292 {3, 95} }, /* 2.4 GHz, lowest power */
1294 {251, 127}, /* 5.x GHz, highest power */
1371 {3, 120} } /* 5.x GHz, lowest power */
1374 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1378 if (index >= IWL_MAX_GAIN_ENTRIES)
1379 return IWL_MAX_GAIN_ENTRIES - 1;
1383 /* Kick off thermal recalibration check every 60 seconds */
1384 #define REG_RECALIB_PERIOD (60)
1387 * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1389 * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1390 * or 6 Mbit (OFDM) rates.
1392 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1393 s32 rate_index, const s8 *clip_pwrs,
1394 struct iwl_channel_info *ch_info,
1397 struct iwl3945_scan_power_info *scan_power_info;
1401 scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1403 /* use this channel group's 6Mbit clipping/saturation pwr,
1404 * but cap at regulatory scan power restriction (set during init
1405 * based on eeprom channel data) for this channel. */
1406 power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1408 /* further limit to user's max power preference.
1409 * FIXME: Other spectrum management power limitations do not
1410 * seem to apply?? */
1411 power = min(power, priv->tx_power_user_lmt);
1412 scan_power_info->requested_power = power;
1414 /* find difference between new scan *power* and current "normal"
1415 * Tx *power* for 6Mb. Use this difference (x2) to adjust the
1416 * current "normal" temperature-compensated Tx power *index* for
1417 * this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1419 power_index = ch_info->power_info[rate_index].power_table_index
1420 - (power - ch_info->power_info
1421 [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1423 /* store reference index that we use when adjusting *all* scan
1424 * powers. So we can accommodate user (all channel) or spectrum
1425 * management (single channel) power changes "between" temperature
1426 * feedback compensation procedures.
1427 * don't force fit this reference index into gain table; it may be a
1428 * negative number. This will help avoid errors when we're at
1429 * the lower bounds (highest gains, for warmest temperatures)
1432 /* don't exceed table bounds for "real" setting */
1433 power_index = iwl3945_hw_reg_fix_power_index(power_index);
1435 scan_power_info->power_table_index = power_index;
1436 scan_power_info->tpc.tx_gain =
1437 power_gain_table[band_index][power_index].tx_gain;
1438 scan_power_info->tpc.dsp_atten =
1439 power_gain_table[band_index][power_index].dsp_atten;
1443 * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1445 * Configures power settings for all rates for the current channel,
1446 * using values from channel info struct, and send to NIC
1448 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1451 const struct iwl_channel_info *ch_info = NULL;
1452 struct iwl3945_txpowertable_cmd txpower = {
1453 .channel = priv->contexts[IWL_RXON_CTX_BSS].active.channel,
1457 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
1458 "TX Power requested while scanning!\n"))
1461 chan = le16_to_cpu(priv->contexts[IWL_RXON_CTX_BSS].active.channel);
1463 txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1464 ch_info = iwl_get_channel_info(priv, priv->band, chan);
1467 "Failed to get channel info for channel %d [%d]\n",
1472 if (!is_channel_valid(ch_info)) {
1473 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1474 "non-Tx channel.\n");
1478 /* fill cmd with power settings for all rates for current channel */
1479 /* Fill OFDM rate */
1480 for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1481 rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1483 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1484 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1486 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1487 le16_to_cpu(txpower.channel),
1489 txpower.power[i].tpc.tx_gain,
1490 txpower.power[i].tpc.dsp_atten,
1491 txpower.power[i].rate);
1493 /* Fill CCK rates */
1494 for (rate_idx = IWL_FIRST_CCK_RATE;
1495 rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1496 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1497 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1499 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1500 le16_to_cpu(txpower.channel),
1502 txpower.power[i].tpc.tx_gain,
1503 txpower.power[i].tpc.dsp_atten,
1504 txpower.power[i].rate);
1507 return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1508 sizeof(struct iwl3945_txpowertable_cmd),
1514 * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1515 * @ch_info: Channel to update. Uses power_info.requested_power.
1517 * Replace requested_power and base_power_index ch_info fields for
1520 * Called if user or spectrum management changes power preferences.
1521 * Takes into account h/w and modulation limitations (clip power).
1523 * This does *not* send anything to NIC, just sets up ch_info for one channel.
1525 * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1526 * properly fill out the scan powers, and actual h/w gain settings,
1527 * and send changes to NIC
1529 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1530 struct iwl_channel_info *ch_info)
1532 struct iwl3945_channel_power_info *power_info;
1533 int power_changed = 0;
1535 const s8 *clip_pwrs;
1538 /* Get this chnlgrp's rate-to-max/clip-powers table */
1539 clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
1541 /* Get this channel's rate-to-current-power settings table */
1542 power_info = ch_info->power_info;
1544 /* update OFDM Txpower settings */
1545 for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1546 i++, ++power_info) {
1549 /* limit new power to be no more than h/w capability */
1550 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1551 if (power == power_info->requested_power)
1554 /* find difference between old and new requested powers,
1555 * update base (non-temp-compensated) power index */
1556 delta_idx = (power - power_info->requested_power) * 2;
1557 power_info->base_power_index -= delta_idx;
1559 /* save new requested power value */
1560 power_info->requested_power = power;
1565 /* update CCK Txpower settings, based on OFDM 12M setting ...
1566 * ... all CCK power settings for a given channel are the *same*. */
1567 if (power_changed) {
1569 ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1570 requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1572 /* do all CCK rates' iwl3945_channel_power_info structures */
1573 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1574 power_info->requested_power = power;
1575 power_info->base_power_index =
1576 ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1577 base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1586 * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1588 * NOTE: Returned power limit may be less (but not more) than requested,
1589 * based strictly on regulatory (eeprom and spectrum mgt) limitations
1590 * (no consideration for h/w clipping limitations).
1592 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1597 /* if we're using TGd limits, use lower of TGd or EEPROM */
1598 if (ch_info->tgd_data.max_power != 0)
1599 max_power = min(ch_info->tgd_data.max_power,
1600 ch_info->eeprom.max_power_avg);
1602 /* else just use EEPROM limits */
1605 max_power = ch_info->eeprom.max_power_avg;
1607 return min(max_power, ch_info->max_power_avg);
1611 * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1613 * Compensate txpower settings of *all* channels for temperature.
1614 * This only accounts for the difference between current temperature
1615 * and the factory calibration temperatures, and bases the new settings
1616 * on the channel's base_power_index.
1618 * If RxOn is "associated", this sends the new Txpower to NIC!
1620 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1622 struct iwl_channel_info *ch_info = NULL;
1623 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1625 const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1631 int temperature = priv->temperature;
1633 if (priv->disable_tx_power_cal ||
1634 test_bit(STATUS_SCANNING, &priv->status)) {
1635 /* do not perform tx power calibration */
1638 /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1639 for (i = 0; i < priv->channel_count; i++) {
1640 ch_info = &priv->channel_info[i];
1641 a_band = is_channel_a_band(ch_info);
1643 /* Get this chnlgrp's factory calibration temperature */
1644 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1647 /* get power index adjustment based on current and factory
1649 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1652 /* set tx power value for all rates, OFDM and CCK */
1653 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1656 ch_info->power_info[rate_index].base_power_index;
1658 /* temperature compensate */
1659 power_idx += delta_index;
1661 /* stay within table range */
1662 power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1663 ch_info->power_info[rate_index].
1664 power_table_index = (u8) power_idx;
1665 ch_info->power_info[rate_index].tpc =
1666 power_gain_table[a_band][power_idx];
1669 /* Get this chnlgrp's rate-to-max/clip-powers table */
1670 clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
1672 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1673 for (scan_tbl_index = 0;
1674 scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1675 s32 actual_index = (scan_tbl_index == 0) ?
1676 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1677 iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1678 actual_index, clip_pwrs,
1683 /* send Txpower command for current channel to ucode */
1684 return priv->cfg->ops->lib->send_tx_power(priv);
1687 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1689 struct iwl_channel_info *ch_info;
1694 if (priv->tx_power_user_lmt == power) {
1695 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1696 "limit: %ddBm.\n", power);
1700 IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1701 priv->tx_power_user_lmt = power;
1703 /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1705 for (i = 0; i < priv->channel_count; i++) {
1706 ch_info = &priv->channel_info[i];
1707 a_band = is_channel_a_band(ch_info);
1709 /* find minimum power of all user and regulatory constraints
1710 * (does not consider h/w clipping limitations) */
1711 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1712 max_power = min(power, max_power);
1713 if (max_power != ch_info->curr_txpow) {
1714 ch_info->curr_txpow = max_power;
1716 /* this considers the h/w clipping limitations */
1717 iwl3945_hw_reg_set_new_power(priv, ch_info);
1721 /* update txpower settings for all channels,
1722 * send to NIC if associated. */
1723 is_temp_calib_needed(priv);
1724 iwl3945_hw_reg_comp_txpower_temp(priv);
1729 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv,
1730 struct iwl_rxon_context *ctx)
1733 struct iwl_rx_packet *pkt;
1734 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1735 struct iwl_host_cmd cmd = {
1736 .id = REPLY_RXON_ASSOC,
1737 .len = sizeof(rxon_assoc),
1738 .flags = CMD_WANT_SKB,
1739 .data = &rxon_assoc,
1741 const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
1742 const struct iwl_rxon_cmd *rxon2 = &ctx->active;
1744 if ((rxon1->flags == rxon2->flags) &&
1745 (rxon1->filter_flags == rxon2->filter_flags) &&
1746 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1747 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1748 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
1752 rxon_assoc.flags = ctx->staging.flags;
1753 rxon_assoc.filter_flags = ctx->staging.filter_flags;
1754 rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
1755 rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
1756 rxon_assoc.reserved = 0;
1758 rc = iwl_send_cmd_sync(priv, &cmd);
1762 pkt = (struct iwl_rx_packet *)cmd.reply_page;
1763 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
1764 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
1768 iwl_free_pages(priv, cmd.reply_page);
1774 * iwl3945_commit_rxon - commit staging_rxon to hardware
1776 * The RXON command in staging_rxon is committed to the hardware and
1777 * the active_rxon structure is updated with the new data. This
1778 * function correctly transitions out of the RXON_ASSOC_MSK state if
1779 * a HW tune is required based on the RXON structure changes.
1781 int iwl3945_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1783 /* cast away the const for active_rxon in this function */
1784 struct iwl3945_rxon_cmd *active_rxon = (void *)&ctx->active;
1785 struct iwl3945_rxon_cmd *staging_rxon = (void *)&ctx->staging;
1787 bool new_assoc = !!(staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK);
1789 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1792 if (!iwl_is_alive(priv))
1795 /* always get timestamp with Rx frame */
1796 staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
1798 /* select antenna */
1799 staging_rxon->flags &=
1800 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1801 staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
1803 rc = iwl_check_rxon_cmd(priv, ctx);
1805 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
1809 /* If we don't need to send a full RXON, we can use
1810 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1811 * and other flags for the current radio configuration. */
1812 if (!iwl_full_rxon_required(priv, &priv->contexts[IWL_RXON_CTX_BSS])) {
1813 rc = iwl_send_rxon_assoc(priv,
1814 &priv->contexts[IWL_RXON_CTX_BSS]);
1816 IWL_ERR(priv, "Error setting RXON_ASSOC "
1817 "configuration (%d).\n", rc);
1821 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1826 /* If we are currently associated and the new config requires
1827 * an RXON_ASSOC and the new config wants the associated mask enabled,
1828 * we must clear the associated from the active configuration
1829 * before we apply the new config */
1830 if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && new_assoc) {
1831 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
1832 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1835 * reserved4 and 5 could have been filled by the iwlcore code.
1836 * Let's clear them before pushing to the 3945.
1838 active_rxon->reserved4 = 0;
1839 active_rxon->reserved5 = 0;
1840 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1841 sizeof(struct iwl3945_rxon_cmd),
1842 &priv->contexts[IWL_RXON_CTX_BSS].active);
1844 /* If the mask clearing failed then we set
1845 * active_rxon back to what it was previously */
1847 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1848 IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
1849 "configuration (%d).\n", rc);
1852 iwl_clear_ucode_stations(priv,
1853 &priv->contexts[IWL_RXON_CTX_BSS]);
1854 iwl_restore_stations(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1857 IWL_DEBUG_INFO(priv, "Sending RXON\n"
1858 "* with%s RXON_FILTER_ASSOC_MSK\n"
1861 (new_assoc ? "" : "out"),
1862 le16_to_cpu(staging_rxon->channel),
1863 staging_rxon->bssid_addr);
1866 * reserved4 and 5 could have been filled by the iwlcore code.
1867 * Let's clear them before pushing to the 3945.
1869 staging_rxon->reserved4 = 0;
1870 staging_rxon->reserved5 = 0;
1872 iwl_set_rxon_hwcrypto(priv, ctx, !iwl3945_mod_params.sw_crypto);
1874 /* Apply the new configuration */
1875 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1876 sizeof(struct iwl3945_rxon_cmd),
1879 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
1883 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
1886 iwl_clear_ucode_stations(priv,
1887 &priv->contexts[IWL_RXON_CTX_BSS]);
1888 iwl_restore_stations(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1891 /* If we issue a new RXON command which required a tune then we must
1892 * send a new TXPOWER command or we won't be able to Tx any frames */
1893 rc = iwl_set_tx_power(priv, priv->tx_power_next, true);
1895 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
1899 /* Init the hardware's rate fallback order based on the band */
1900 rc = iwl3945_init_hw_rate_table(priv);
1902 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
1910 * iwl3945_reg_txpower_periodic - called when time to check our temperature.
1912 * -- reset periodic timer
1913 * -- see if temp has changed enough to warrant re-calibration ... if so:
1914 * -- correct coeffs for temp (can reset temp timer)
1915 * -- save this temp as "last",
1916 * -- send new set of gain settings to NIC
1917 * NOTE: This should continue working, even when we're not associated,
1918 * so we can keep our internal table of scan powers current. */
1919 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
1921 /* This will kick in the "brute force"
1922 * iwl3945_hw_reg_comp_txpower_temp() below */
1923 if (!is_temp_calib_needed(priv))
1926 /* Set up a new set of temp-adjusted TxPowers, send to NIC.
1927 * This is based *only* on current temperature,
1928 * ignoring any previous power measurements */
1929 iwl3945_hw_reg_comp_txpower_temp(priv);
1932 queue_delayed_work(priv->workqueue,
1933 &priv->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ);
1936 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
1938 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1939 _3945.thermal_periodic.work);
1941 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1944 mutex_lock(&priv->mutex);
1945 iwl3945_reg_txpower_periodic(priv);
1946 mutex_unlock(&priv->mutex);
1950 * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
1953 * This function is used when initializing channel-info structs.
1955 * NOTE: These channel groups do *NOT* match the bands above!
1956 * These channel groups are based on factory-tested channels;
1957 * on A-band, EEPROM's "group frequency" entries represent the top
1958 * channel in each group 1-4. Group 5 All B/G channels are in group 0.
1960 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
1961 const struct iwl_channel_info *ch_info)
1963 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1964 struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
1966 u16 group_index = 0; /* based on factory calib frequencies */
1969 /* Find the group index for the channel ... don't use index 1(?) */
1970 if (is_channel_a_band(ch_info)) {
1971 for (group = 1; group < 5; group++) {
1972 grp_channel = ch_grp[group].group_channel;
1973 if (ch_info->channel <= grp_channel) {
1974 group_index = group;
1978 /* group 4 has a few channels *above* its factory cal freq */
1982 group_index = 0; /* 2.4 GHz, group 0 */
1984 IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
1990 * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
1992 * Interpolate to get nominal (i.e. at factory calibration temperature) index
1993 * into radio/DSP gain settings table for requested power.
1995 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
1997 s32 setting_index, s32 *new_index)
1999 const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2000 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2002 s32 power = 2 * requested_power;
2004 const struct iwl3945_eeprom_txpower_sample *samples;
2009 chnl_grp = &eeprom->groups[setting_index];
2010 samples = chnl_grp->samples;
2011 for (i = 0; i < 5; i++) {
2012 if (power == samples[i].power) {
2013 *new_index = samples[i].gain_index;
2018 if (power > samples[1].power) {
2021 } else if (power > samples[2].power) {
2024 } else if (power > samples[3].power) {
2032 denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2033 if (denominator == 0)
2035 gains0 = (s32) samples[index0].gain_index * (1 << 19);
2036 gains1 = (s32) samples[index1].gain_index * (1 << 19);
2037 res = gains0 + (gains1 - gains0) *
2038 ((s32) power - (s32) samples[index0].power) / denominator +
2040 *new_index = res >> 19;
2044 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2048 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2049 const struct iwl3945_eeprom_txpower_group *group;
2051 IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
2053 for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2054 s8 *clip_pwrs; /* table of power levels for each rate */
2055 s8 satur_pwr; /* saturation power for each chnl group */
2056 group = &eeprom->groups[i];
2058 /* sanity check on factory saturation power value */
2059 if (group->saturation_power < 40) {
2060 IWL_WARN(priv, "Error: saturation power is %d, "
2061 "less than minimum expected 40\n",
2062 group->saturation_power);
2067 * Derive requested power levels for each rate, based on
2068 * hardware capabilities (saturation power for band).
2069 * Basic value is 3dB down from saturation, with further
2070 * power reductions for highest 3 data rates. These
2071 * backoffs provide headroom for high rate modulation
2072 * power peaks, without too much distortion (clipping).
2074 /* we'll fill in this array with h/w max power levels */
2075 clip_pwrs = (s8 *) priv->_3945.clip_groups[i].clip_powers;
2077 /* divide factory saturation power by 2 to find -3dB level */
2078 satur_pwr = (s8) (group->saturation_power >> 1);
2080 /* fill in channel group's nominal powers for each rate */
2081 for (rate_index = 0;
2082 rate_index < IWL_RATE_COUNT_3945; rate_index++, clip_pwrs++) {
2083 switch (rate_index) {
2084 case IWL_RATE_36M_INDEX_TABLE:
2085 if (i == 0) /* B/G */
2086 *clip_pwrs = satur_pwr;
2088 *clip_pwrs = satur_pwr - 5;
2090 case IWL_RATE_48M_INDEX_TABLE:
2092 *clip_pwrs = satur_pwr - 7;
2094 *clip_pwrs = satur_pwr - 10;
2096 case IWL_RATE_54M_INDEX_TABLE:
2098 *clip_pwrs = satur_pwr - 9;
2100 *clip_pwrs = satur_pwr - 12;
2103 *clip_pwrs = satur_pwr;
2111 * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2113 * Second pass (during init) to set up priv->channel_info
2115 * Set up Tx-power settings in our channel info database for each VALID
2116 * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2117 * and current temperature.
2119 * Since this is based on current temperature (at init time), these values may
2120 * not be valid for very long, but it gives us a starting/default point,
2121 * and allows us to active (i.e. using Tx) scan.
2123 * This does *not* write values to NIC, just sets up our internal table.
2125 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2127 struct iwl_channel_info *ch_info = NULL;
2128 struct iwl3945_channel_power_info *pwr_info;
2129 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2133 const s8 *clip_pwrs; /* array of power levels for each rate */
2136 u8 pwr_index, base_pwr_index, a_band;
2140 /* save temperature reference,
2141 * so we can determine next time to calibrate */
2142 temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2143 priv->last_temperature = temperature;
2145 iwl3945_hw_reg_init_channel_groups(priv);
2147 /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2148 for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2150 a_band = is_channel_a_band(ch_info);
2151 if (!is_channel_valid(ch_info))
2154 /* find this channel's channel group (*not* "band") index */
2155 ch_info->group_index =
2156 iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2158 /* Get this chnlgrp's rate->max/clip-powers table */
2159 clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers;
2161 /* calculate power index *adjustment* value according to
2162 * diff between current temperature and factory temperature */
2163 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2164 eeprom->groups[ch_info->group_index].
2167 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2168 ch_info->channel, delta_index, temperature +
2171 /* set tx power value for all OFDM rates */
2172 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2174 s32 uninitialized_var(power_idx);
2177 /* use channel group's clip-power table,
2178 * but don't exceed channel's max power */
2179 s8 pwr = min(ch_info->max_power_avg,
2180 clip_pwrs[rate_index]);
2182 pwr_info = &ch_info->power_info[rate_index];
2184 /* get base (i.e. at factory-measured temperature)
2185 * power table index for this rate's power */
2186 rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2187 ch_info->group_index,
2190 IWL_ERR(priv, "Invalid power index\n");
2193 pwr_info->base_power_index = (u8) power_idx;
2195 /* temperature compensate */
2196 power_idx += delta_index;
2198 /* stay within range of gain table */
2199 power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2201 /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2202 pwr_info->requested_power = pwr;
2203 pwr_info->power_table_index = (u8) power_idx;
2204 pwr_info->tpc.tx_gain =
2205 power_gain_table[a_band][power_idx].tx_gain;
2206 pwr_info->tpc.dsp_atten =
2207 power_gain_table[a_band][power_idx].dsp_atten;
2210 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2211 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2212 power = pwr_info->requested_power +
2213 IWL_CCK_FROM_OFDM_POWER_DIFF;
2214 pwr_index = pwr_info->power_table_index +
2215 IWL_CCK_FROM_OFDM_INDEX_DIFF;
2216 base_pwr_index = pwr_info->base_power_index +
2217 IWL_CCK_FROM_OFDM_INDEX_DIFF;
2219 /* stay within table range */
2220 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2221 gain = power_gain_table[a_band][pwr_index].tx_gain;
2222 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2224 /* fill each CCK rate's iwl3945_channel_power_info structure
2225 * NOTE: All CCK-rate Txpwrs are the same for a given chnl!
2226 * NOTE: CCK rates start at end of OFDM rates! */
2227 for (rate_index = 0;
2228 rate_index < IWL_CCK_RATES; rate_index++) {
2229 pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2230 pwr_info->requested_power = power;
2231 pwr_info->power_table_index = pwr_index;
2232 pwr_info->base_power_index = base_pwr_index;
2233 pwr_info->tpc.tx_gain = gain;
2234 pwr_info->tpc.dsp_atten = dsp_atten;
2237 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2238 for (scan_tbl_index = 0;
2239 scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2240 s32 actual_index = (scan_tbl_index == 0) ?
2241 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2242 iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2243 actual_index, clip_pwrs, ch_info, a_band);
2250 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2254 iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2255 rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2256 FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2258 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2263 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2265 int txq_id = txq->q.id;
2267 struct iwl3945_shared *shared_data = priv->_3945.shared_virt;
2269 shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2271 iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2272 iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2274 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2275 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2276 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2277 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2278 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2279 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2281 /* fake read to flush all prev. writes */
2282 iwl_read32(priv, FH39_TSSR_CBB_BASE);
2290 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2294 return sizeof(struct iwl3945_rxon_cmd);
2295 case POWER_TABLE_CMD:
2296 return sizeof(struct iwl3945_powertable_cmd);
2303 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2305 struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data;
2306 addsta->mode = cmd->mode;
2307 memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify));
2308 memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo));
2309 addsta->station_flags = cmd->station_flags;
2310 addsta->station_flags_msk = cmd->station_flags_msk;
2311 addsta->tid_disable_tx = cpu_to_le16(0);
2312 addsta->rate_n_flags = cmd->rate_n_flags;
2313 addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid;
2314 addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid;
2315 addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn;
2317 return (u16)sizeof(struct iwl3945_addsta_cmd);
2320 static int iwl3945_add_bssid_station(struct iwl_priv *priv,
2321 const u8 *addr, u8 *sta_id_r)
2323 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2326 unsigned long flags;
2329 *sta_id_r = IWL_INVALID_STATION;
2331 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
2333 IWL_ERR(priv, "Unable to add station %pM\n", addr);
2340 spin_lock_irqsave(&priv->sta_lock, flags);
2341 priv->stations[sta_id].used |= IWL_STA_LOCAL;
2342 spin_unlock_irqrestore(&priv->sta_lock, flags);
2346 static int iwl3945_manage_ibss_station(struct iwl_priv *priv,
2347 struct ieee80211_vif *vif, bool add)
2349 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2353 ret = iwl3945_add_bssid_station(priv, vif->bss_conf.bssid,
2354 &vif_priv->ibss_bssid_sta_id);
2358 iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id,
2359 (priv->band == IEEE80211_BAND_5GHZ) ?
2360 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP);
2361 iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id);
2366 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
2367 vif->bss_conf.bssid);
2371 * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2373 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2375 int rc, i, index, prev_index;
2376 struct iwl3945_rate_scaling_cmd rate_cmd = {
2377 .reserved = {0, 0, 0},
2379 struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2381 for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2382 index = iwl3945_rates[i].table_rs_index;
2384 table[index].rate_n_flags =
2385 iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2386 table[index].try_cnt = priv->retry_rate;
2387 prev_index = iwl3945_get_prev_ieee_rate(i);
2388 table[index].next_rate_index =
2389 iwl3945_rates[prev_index].table_rs_index;
2392 switch (priv->band) {
2393 case IEEE80211_BAND_5GHZ:
2394 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2395 /* If one of the following CCK rates is used,
2396 * have it fall back to the 6M OFDM rate */
2397 for (i = IWL_RATE_1M_INDEX_TABLE;
2398 i <= IWL_RATE_11M_INDEX_TABLE; i++)
2399 table[i].next_rate_index =
2400 iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2402 /* Don't fall back to CCK rates */
2403 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2404 IWL_RATE_9M_INDEX_TABLE;
2406 /* Don't drop out of OFDM rates */
2407 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2408 iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2411 case IEEE80211_BAND_2GHZ:
2412 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2413 /* If an OFDM rate is used, have it fall back to the
2416 if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2417 iwl_is_associated(priv, IWL_RXON_CTX_BSS)) {
2419 index = IWL_FIRST_CCK_RATE;
2420 for (i = IWL_RATE_6M_INDEX_TABLE;
2421 i <= IWL_RATE_54M_INDEX_TABLE; i++)
2422 table[i].next_rate_index =
2423 iwl3945_rates[index].table_rs_index;
2425 index = IWL_RATE_11M_INDEX_TABLE;
2426 /* CCK shouldn't fall back to OFDM... */
2427 table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2436 /* Update the rate scaling for control frame Tx */
2437 rate_cmd.table_id = 0;
2438 rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2443 /* Update the rate scaling for data frame Tx */
2444 rate_cmd.table_id = 1;
2445 return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2449 /* Called when initializing driver */
2450 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2452 memset((void *)&priv->hw_params, 0,
2453 sizeof(struct iwl_hw_params));
2455 priv->_3945.shared_virt =
2456 dma_alloc_coherent(&priv->pci_dev->dev,
2457 sizeof(struct iwl3945_shared),
2458 &priv->_3945.shared_phys, GFP_KERNEL);
2459 if (!priv->_3945.shared_virt) {
2460 IWL_ERR(priv, "failed to allocate pci memory\n");
2464 /* Assign number of Usable TX queues */
2465 priv->hw_params.max_txq_num = priv->cfg->base_params->num_of_queues;
2467 priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2468 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K);
2469 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2470 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2471 priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2472 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWL3945_BROADCAST_ID;
2474 priv->sta_key_max_num = STA_KEY_MAX_NUM;
2476 priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2477 priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL;
2478 priv->hw_params.beacon_time_tsf_bits = IWL3945_EXT_BEACON_TIME_POS;
2483 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2484 struct iwl3945_frame *frame, u8 rate)
2486 struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2487 unsigned int frame_size;
2489 tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2490 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2492 tx_beacon_cmd->tx.sta_id =
2493 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id;
2494 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2496 frame_size = iwl3945_fill_beacon_frame(priv,
2497 tx_beacon_cmd->frame,
2498 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2500 BUG_ON(frame_size > MAX_MPDU_SIZE);
2501 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2503 tx_beacon_cmd->tx.rate = rate;
2504 tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2505 TX_CMD_FLG_TSF_MSK);
2507 /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2508 tx_beacon_cmd->tx.supp_rates[0] =
2509 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2511 tx_beacon_cmd->tx.supp_rates[1] =
2512 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2514 return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2517 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2519 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2520 priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2523 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2525 INIT_DELAYED_WORK(&priv->_3945.thermal_periodic,
2526 iwl3945_bg_reg_txpower_periodic);
2529 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2531 cancel_delayed_work(&priv->_3945.thermal_periodic);
2534 /* check contents of special bootstrap uCode SRAM */
2535 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2537 __le32 *image = priv->ucode_boot.v_addr;
2538 u32 len = priv->ucode_boot.len;
2542 IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2544 /* verify BSM SRAM contents */
2545 val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2546 for (reg = BSM_SRAM_LOWER_BOUND;
2547 reg < BSM_SRAM_LOWER_BOUND + len;
2548 reg += sizeof(u32), image++) {
2549 val = iwl_read_prph(priv, reg);
2550 if (val != le32_to_cpu(*image)) {
2551 IWL_ERR(priv, "BSM uCode verification failed at "
2552 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2553 BSM_SRAM_LOWER_BOUND,
2554 reg - BSM_SRAM_LOWER_BOUND, len,
2555 val, le32_to_cpu(*image));
2560 IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2566 /******************************************************************************
2568 * EEPROM related functions
2570 ******************************************************************************/
2573 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2574 * embedded controller) as EEPROM reader; each read is a series of pulses
2575 * to/from the EEPROM chip, not a single event, so even reads could conflict
2576 * if they weren't arbitrated by some ownership mechanism. Here, the driver
2577 * simply claims ownership, which should be safe when this function is called
2578 * (i.e. before loading uCode!).
2580 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2582 _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2587 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2593 * iwl3945_load_bsm - Load bootstrap instructions
2597 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2598 * in special SRAM that does not power down during RFKILL. When powering back
2599 * up after power-saving sleeps (or during initial uCode load), the BSM loads
2600 * the bootstrap program into the on-board processor, and starts it.
2602 * The bootstrap program loads (via DMA) instructions and data for a new
2603 * program from host DRAM locations indicated by the host driver in the
2604 * BSM_DRAM_* registers. Once the new program is loaded, it starts
2607 * When initializing the NIC, the host driver points the BSM to the
2608 * "initialize" uCode image. This uCode sets up some internal data, then
2609 * notifies host via "initialize alive" that it is complete.
2611 * The host then replaces the BSM_DRAM_* pointer values to point to the
2612 * normal runtime uCode instructions and a backup uCode data cache buffer
2613 * (filled initially with starting data values for the on-board processor),
2614 * then triggers the "initialize" uCode to load and launch the runtime uCode,
2615 * which begins normal operation.
2617 * When doing a power-save shutdown, runtime uCode saves data SRAM into
2618 * the backup data cache in DRAM before SRAM is powered down.
2620 * When powering back up, the BSM loads the bootstrap program. This reloads
2621 * the runtime uCode instructions and the backup data cache into SRAM,
2622 * and re-launches the runtime uCode from where it left off.
2624 static int iwl3945_load_bsm(struct iwl_priv *priv)
2626 __le32 *image = priv->ucode_boot.v_addr;
2627 u32 len = priv->ucode_boot.len;
2637 IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2639 /* make sure bootstrap program is no larger than BSM's SRAM size */
2640 if (len > IWL39_MAX_BSM_SIZE)
2643 /* Tell bootstrap uCode where to find the "Initialize" uCode
2644 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2645 * NOTE: iwl3945_initialize_alive_start() will replace these values,
2646 * after the "initialize" uCode has run, to point to
2647 * runtime/protocol instructions and backup data cache. */
2648 pinst = priv->ucode_init.p_addr;
2649 pdata = priv->ucode_init_data.p_addr;
2650 inst_len = priv->ucode_init.len;
2651 data_len = priv->ucode_init_data.len;
2653 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2654 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2655 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2656 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2658 /* Fill BSM memory with bootstrap instructions */
2659 for (reg_offset = BSM_SRAM_LOWER_BOUND;
2660 reg_offset < BSM_SRAM_LOWER_BOUND + len;
2661 reg_offset += sizeof(u32), image++)
2662 _iwl_write_prph(priv, reg_offset,
2663 le32_to_cpu(*image));
2665 rc = iwl3945_verify_bsm(priv);
2669 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2670 iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2671 iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2672 IWL39_RTC_INST_LOWER_BOUND);
2673 iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2675 /* Load bootstrap code into instruction SRAM now,
2676 * to prepare to load "initialize" uCode */
2677 iwl_write_prph(priv, BSM_WR_CTRL_REG,
2678 BSM_WR_CTRL_REG_BIT_START);
2680 /* Wait for load of bootstrap uCode to finish */
2681 for (i = 0; i < 100; i++) {
2682 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2683 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2688 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2690 IWL_ERR(priv, "BSM write did not complete!\n");
2694 /* Enable future boot loads whenever power management unit triggers it
2695 * (e.g. when powering back up after power-save shutdown) */
2696 iwl_write_prph(priv, BSM_WR_CTRL_REG,
2697 BSM_WR_CTRL_REG_BIT_START_EN);
2702 static struct iwl_hcmd_ops iwl3945_hcmd = {
2703 .rxon_assoc = iwl3945_send_rxon_assoc,
2704 .commit_rxon = iwl3945_commit_rxon,
2705 .send_bt_config = iwl_send_bt_config,
2708 static struct iwl_lib_ops iwl3945_lib = {
2709 .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2710 .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2711 .txq_init = iwl3945_hw_tx_queue_init,
2712 .load_ucode = iwl3945_load_bsm,
2713 .dump_nic_event_log = iwl3945_dump_nic_event_log,
2714 .dump_nic_error_log = iwl3945_dump_nic_error_log,
2716 .init = iwl3945_apm_init,
2717 .config = iwl3945_nic_config,
2720 .regulatory_bands = {
2721 EEPROM_REGULATORY_BAND_1_CHANNELS,
2722 EEPROM_REGULATORY_BAND_2_CHANNELS,
2723 EEPROM_REGULATORY_BAND_3_CHANNELS,
2724 EEPROM_REGULATORY_BAND_4_CHANNELS,
2725 EEPROM_REGULATORY_BAND_5_CHANNELS,
2726 EEPROM_REGULATORY_BAND_NO_HT40,
2727 EEPROM_REGULATORY_BAND_NO_HT40,
2729 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2730 .release_semaphore = iwl3945_eeprom_release_semaphore,
2731 .query_addr = iwlcore_eeprom_query_addr,
2733 .send_tx_power = iwl3945_send_tx_power,
2734 .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2736 .isr = iwl_isr_legacy,
2738 .check_plcp_health = iwl3945_good_plcp_health,
2741 .rx_stats_read = iwl3945_ucode_rx_stats_read,
2742 .tx_stats_read = iwl3945_ucode_tx_stats_read,
2743 .general_stats_read = iwl3945_ucode_general_stats_read,
2747 static const struct iwl_legacy_ops iwl3945_legacy_ops = {
2748 .post_associate = iwl3945_post_associate,
2749 .config_ap = iwl3945_config_ap,
2750 .manage_ibss_station = iwl3945_manage_ibss_station,
2753 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2754 .get_hcmd_size = iwl3945_get_hcmd_size,
2755 .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2756 .tx_cmd_protection = iwl_legacy_tx_cmd_protection,
2757 .request_scan = iwl3945_request_scan,
2758 .post_scan = iwl3945_post_scan,
2761 static const struct iwl_ops iwl3945_ops = {
2762 .lib = &iwl3945_lib,
2763 .hcmd = &iwl3945_hcmd,
2764 .utils = &iwl3945_hcmd_utils,
2765 .led = &iwl3945_led_ops,
2766 .legacy = &iwl3945_legacy_ops,
2767 .ieee80211_ops = &iwl3945_hw_ops,
2770 static struct iwl_base_params iwl3945_base_params = {
2771 .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2772 .num_of_queues = IWL39_NUM_QUEUES,
2773 .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL,
2776 .use_isr_legacy = true,
2777 .led_compensation = 64,
2778 .broken_powersave = true,
2779 .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF,
2780 .wd_timeout = IWL_DEF_WD_TIMEOUT,
2781 .max_event_log_size = 512,
2782 .tx_power_by_driver = true,
2785 static struct iwl_cfg iwl3945_bg_cfg = {
2787 .fw_name_pre = IWL3945_FW_PRE,
2788 .ucode_api_max = IWL3945_UCODE_API_MAX,
2789 .ucode_api_min = IWL3945_UCODE_API_MIN,
2791 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2792 .ops = &iwl3945_ops,
2793 .mod_params = &iwl3945_mod_params,
2794 .base_params = &iwl3945_base_params,
2795 .led_mode = IWL_LED_BLINK,
2798 static struct iwl_cfg iwl3945_abg_cfg = {
2800 .fw_name_pre = IWL3945_FW_PRE,
2801 .ucode_api_max = IWL3945_UCODE_API_MAX,
2802 .ucode_api_min = IWL3945_UCODE_API_MIN,
2803 .sku = IWL_SKU_A|IWL_SKU_G,
2804 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2805 .ops = &iwl3945_ops,
2806 .mod_params = &iwl3945_mod_params,
2807 .base_params = &iwl3945_base_params,
2808 .led_mode = IWL_LED_BLINK,
2811 DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids) = {
2812 {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
2813 {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
2814 {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
2815 {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
2816 {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
2817 {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
2821 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);