1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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/pci.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/delay.h>
33 #include <linux/skbuff.h>
34 #include <linux/netdevice.h>
35 #include <linux/wireless.h>
36 #include <linux/firmware.h>
37 #include <linux/etherdevice.h>
38 #include <asm/unaligned.h>
39 #include <net/mac80211.h>
42 #include "iwl-3945-fh.h"
43 #include "iwl-commands.h"
46 #include "iwl-eeprom.h"
47 #include "iwl-helpers.h"
49 #include "iwl-agn-rs.h"
51 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
52 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
53 IWL_RATE_##r##M_IEEE, \
54 IWL_RATE_##ip##M_INDEX, \
55 IWL_RATE_##in##M_INDEX, \
56 IWL_RATE_##rp##M_INDEX, \
57 IWL_RATE_##rn##M_INDEX, \
58 IWL_RATE_##pp##M_INDEX, \
59 IWL_RATE_##np##M_INDEX, \
60 IWL_RATE_##r##M_INDEX_TABLE, \
61 IWL_RATE_##ip##M_INDEX_TABLE }
65 * rate, prev rate, next rate, prev tgg rate, next tgg rate
67 * If there isn't a valid next or previous rate then INV is used which
68 * maps to IWL_RATE_INVALID
71 const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = {
72 IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */
73 IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
74 IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
75 IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
76 IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
77 IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
78 IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
79 IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
80 IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
81 IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
82 IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
83 IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */
86 /* 1 = enable the iwl3945_disable_events() function */
87 #define IWL_EVT_DISABLE (0)
88 #define IWL_EVT_DISABLE_SIZE (1532/32)
91 * iwl3945_disable_events - Disable selected events in uCode event log
93 * Disable an event by writing "1"s into "disable"
94 * bitmap in SRAM. Bit position corresponds to Event # (id/type).
95 * Default values of 0 enable uCode events to be logged.
96 * Use for only special debugging. This function is just a placeholder as-is,
97 * you'll need to provide the special bits! ...
98 * ... and set IWL_EVT_DISABLE to 1. */
99 void iwl3945_disable_events(struct iwl_priv *priv)
103 u32 base; /* SRAM address of event log header */
104 u32 disable_ptr; /* SRAM address of event-disable bitmap array */
105 u32 array_size; /* # of u32 entries in array */
106 u32 evt_disable[IWL_EVT_DISABLE_SIZE] = {
107 0x00000000, /* 31 - 0 Event id numbers */
108 0x00000000, /* 63 - 32 */
109 0x00000000, /* 95 - 64 */
110 0x00000000, /* 127 - 96 */
111 0x00000000, /* 159 - 128 */
112 0x00000000, /* 191 - 160 */
113 0x00000000, /* 223 - 192 */
114 0x00000000, /* 255 - 224 */
115 0x00000000, /* 287 - 256 */
116 0x00000000, /* 319 - 288 */
117 0x00000000, /* 351 - 320 */
118 0x00000000, /* 383 - 352 */
119 0x00000000, /* 415 - 384 */
120 0x00000000, /* 447 - 416 */
121 0x00000000, /* 479 - 448 */
122 0x00000000, /* 511 - 480 */
123 0x00000000, /* 543 - 512 */
124 0x00000000, /* 575 - 544 */
125 0x00000000, /* 607 - 576 */
126 0x00000000, /* 639 - 608 */
127 0x00000000, /* 671 - 640 */
128 0x00000000, /* 703 - 672 */
129 0x00000000, /* 735 - 704 */
130 0x00000000, /* 767 - 736 */
131 0x00000000, /* 799 - 768 */
132 0x00000000, /* 831 - 800 */
133 0x00000000, /* 863 - 832 */
134 0x00000000, /* 895 - 864 */
135 0x00000000, /* 927 - 896 */
136 0x00000000, /* 959 - 928 */
137 0x00000000, /* 991 - 960 */
138 0x00000000, /* 1023 - 992 */
139 0x00000000, /* 1055 - 1024 */
140 0x00000000, /* 1087 - 1056 */
141 0x00000000, /* 1119 - 1088 */
142 0x00000000, /* 1151 - 1120 */
143 0x00000000, /* 1183 - 1152 */
144 0x00000000, /* 1215 - 1184 */
145 0x00000000, /* 1247 - 1216 */
146 0x00000000, /* 1279 - 1248 */
147 0x00000000, /* 1311 - 1280 */
148 0x00000000, /* 1343 - 1312 */
149 0x00000000, /* 1375 - 1344 */
150 0x00000000, /* 1407 - 1376 */
151 0x00000000, /* 1439 - 1408 */
152 0x00000000, /* 1471 - 1440 */
153 0x00000000, /* 1503 - 1472 */
156 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
157 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
158 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
162 ret = iwl_grab_nic_access(priv);
164 IWL_WARN(priv, "Can not read from adapter at this time.\n");
168 disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32)));
169 array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32)));
170 iwl_release_nic_access(priv);
172 if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) {
173 IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n",
175 ret = iwl_grab_nic_access(priv);
176 for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++)
177 iwl_write_targ_mem(priv,
178 disable_ptr + (i * sizeof(u32)),
181 iwl_release_nic_access(priv);
183 IWL_DEBUG_INFO(priv, "Selected uCode log events may be disabled\n");
184 IWL_DEBUG_INFO(priv, " by writing \"1\"s into disable bitmap\n");
185 IWL_DEBUG_INFO(priv, " in SRAM at 0x%x, size %d u32s\n",
186 disable_ptr, array_size);
191 static int iwl3945_hwrate_to_plcp_idx(u8 plcp)
195 for (idx = 0; idx < IWL_RATE_COUNT; idx++)
196 if (iwl3945_rates[idx].plcp == plcp)
201 #ifdef CONFIG_IWLWIFI_DEBUG
202 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
204 static const char *iwl3945_get_tx_fail_reason(u32 status)
206 switch (status & TX_STATUS_MSK) {
207 case TX_STATUS_SUCCESS:
209 TX_STATUS_ENTRY(SHORT_LIMIT);
210 TX_STATUS_ENTRY(LONG_LIMIT);
211 TX_STATUS_ENTRY(FIFO_UNDERRUN);
212 TX_STATUS_ENTRY(MGMNT_ABORT);
213 TX_STATUS_ENTRY(NEXT_FRAG);
214 TX_STATUS_ENTRY(LIFE_EXPIRE);
215 TX_STATUS_ENTRY(DEST_PS);
216 TX_STATUS_ENTRY(ABORTED);
217 TX_STATUS_ENTRY(BT_RETRY);
218 TX_STATUS_ENTRY(STA_INVALID);
219 TX_STATUS_ENTRY(FRAG_DROPPED);
220 TX_STATUS_ENTRY(TID_DISABLE);
221 TX_STATUS_ENTRY(FRAME_FLUSHED);
222 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
223 TX_STATUS_ENTRY(TX_LOCKED);
224 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
230 static inline const char *iwl3945_get_tx_fail_reason(u32 status)
237 * get ieee prev rate from rate scale table.
238 * for A and B mode we need to overright prev
241 int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate)
243 int next_rate = iwl3945_get_prev_ieee_rate(rate);
245 switch (priv->band) {
246 case IEEE80211_BAND_5GHZ:
247 if (rate == IWL_RATE_12M_INDEX)
248 next_rate = IWL_RATE_9M_INDEX;
249 else if (rate == IWL_RATE_6M_INDEX)
250 next_rate = IWL_RATE_6M_INDEX;
252 case IEEE80211_BAND_2GHZ:
253 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
254 iwl_is_associated(priv)) {
255 if (rate == IWL_RATE_11M_INDEX)
256 next_rate = IWL_RATE_5M_INDEX;
269 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
271 * When FW advances 'R' index, all entries between old and new 'R' index
272 * need to be reclaimed. As result, some free space forms. If there is
273 * enough free space (> low mark), wake the stack that feeds us.
275 static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv,
276 int txq_id, int index)
278 struct iwl_tx_queue *txq = &priv->txq[txq_id];
279 struct iwl_queue *q = &txq->q;
280 struct iwl_tx_info *tx_info;
282 BUG_ON(txq_id == IWL_CMD_QUEUE_NUM);
284 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
285 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
287 tx_info = &txq->txb[txq->q.read_ptr];
288 ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
289 tx_info->skb[0] = NULL;
290 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
293 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
294 (txq_id != IWL_CMD_QUEUE_NUM) &&
295 priv->mac80211_registered)
296 iwl_wake_queue(priv, txq_id);
300 * iwl3945_rx_reply_tx - Handle Tx response
302 static void iwl3945_rx_reply_tx(struct iwl_priv *priv,
303 struct iwl_rx_mem_buffer *rxb)
305 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
306 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
307 int txq_id = SEQ_TO_QUEUE(sequence);
308 int index = SEQ_TO_INDEX(sequence);
309 struct iwl_tx_queue *txq = &priv->txq[txq_id];
310 struct ieee80211_tx_info *info;
311 struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
312 u32 status = le32_to_cpu(tx_resp->status);
316 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
317 IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d "
318 "is out of range [0-%d] %d %d\n", txq_id,
319 index, txq->q.n_bd, txq->q.write_ptr,
324 info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
325 ieee80211_tx_info_clear_status(info);
327 /* Fill the MRR chain with some info about on-chip retransmissions */
328 rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate);
329 if (info->band == IEEE80211_BAND_5GHZ)
330 rate_idx -= IWL_FIRST_OFDM_RATE;
332 fail = tx_resp->failure_frame;
334 info->status.rates[0].idx = rate_idx;
335 info->status.rates[0].count = fail + 1; /* add final attempt */
337 /* tx_status->rts_retry_count = tx_resp->failure_rts; */
338 info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ?
339 IEEE80211_TX_STAT_ACK : 0;
341 IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
342 txq_id, iwl3945_get_tx_fail_reason(status), status,
343 tx_resp->rate, tx_resp->failure_frame);
345 IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index);
346 iwl3945_tx_queue_reclaim(priv, txq_id, index);
348 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
349 IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n");
354 /*****************************************************************************
356 * Intel PRO/Wireless 3945ABG/BG Network Connection
358 * RX handler implementations
360 *****************************************************************************/
362 void iwl3945_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
364 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
365 IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",
366 (int)sizeof(struct iwl3945_notif_statistics),
367 le32_to_cpu(pkt->len));
369 memcpy(&priv->statistics_39, pkt->u.raw, sizeof(priv->statistics_39));
371 iwl3945_led_background(priv);
373 priv->last_statistics_time = jiffies;
376 /******************************************************************************
378 * Misc. internal state and helper functions
380 ******************************************************************************/
381 #ifdef CONFIG_IWLWIFI_DEBUG
384 * iwl3945_report_frame - dump frame to syslog during debug sessions
386 * You may hack this function to show different aspects of received frames,
387 * including selective frame dumps.
388 * group100 parameter selects whether to show 1 out of 100 good frames.
390 static void _iwl3945_dbg_report_frame(struct iwl_priv *priv,
391 struct iwl_rx_packet *pkt,
392 struct ieee80211_hdr *header, int group100)
395 u32 print_summary = 0;
396 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
412 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
413 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
414 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
415 u8 *data = IWL_RX_DATA(pkt);
418 fc = header->frame_control;
419 seq_ctl = le16_to_cpu(header->seq_ctrl);
422 channel = le16_to_cpu(rx_hdr->channel);
423 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
424 length = le16_to_cpu(rx_hdr->len);
426 /* end-of-frame status and timestamp */
427 status = le32_to_cpu(rx_end->status);
428 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
429 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
430 tsf = le64_to_cpu(rx_end->timestamp);
432 /* signal statistics */
433 rssi = rx_stats->rssi;
435 sig_avg = le16_to_cpu(rx_stats->sig_avg);
436 noise_diff = le16_to_cpu(rx_stats->noise_diff);
438 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
440 /* if data frame is to us and all is good,
441 * (optionally) print summary for only 1 out of every 100 */
442 if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) ==
443 cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
446 print_summary = 1; /* print each frame */
447 else if (priv->framecnt_to_us < 100) {
448 priv->framecnt_to_us++;
451 priv->framecnt_to_us = 0;
456 /* print summary for all other frames */
466 else if (ieee80211_has_retry(fc))
468 else if (ieee80211_is_assoc_resp(fc))
470 else if (ieee80211_is_reassoc_resp(fc))
472 else if (ieee80211_is_probe_resp(fc)) {
474 print_dump = 1; /* dump frame contents */
475 } else if (ieee80211_is_beacon(fc)) {
477 print_dump = 1; /* dump frame contents */
478 } else if (ieee80211_is_atim(fc))
480 else if (ieee80211_is_auth(fc))
482 else if (ieee80211_is_deauth(fc))
484 else if (ieee80211_is_disassoc(fc))
489 rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
493 rate = iwl3945_rates[rate].ieee / 2;
495 /* print frame summary.
496 * MAC addresses show just the last byte (for brevity),
497 * but you can hack it to show more, if you'd like to. */
499 IWL_DEBUG_RX(priv, "%s: mhd=0x%04x, dst=0x%02x, "
500 "len=%u, rssi=%d, chnl=%d, rate=%d, \n",
501 title, le16_to_cpu(fc), header->addr1[5],
502 length, rssi, channel, rate);
504 /* src/dst addresses assume managed mode */
505 IWL_DEBUG_RX(priv, "%s: 0x%04x, dst=0x%02x, "
506 "src=0x%02x, rssi=%u, tim=%lu usec, "
507 "phy=0x%02x, chnl=%d\n",
508 title, le16_to_cpu(fc), header->addr1[5],
509 header->addr3[5], rssi,
510 tsf_low - priv->scan_start_tsf,
515 iwl_print_hex_dump(priv, IWL_DL_RX, data, length);
518 static void iwl3945_dbg_report_frame(struct iwl_priv *priv,
519 struct iwl_rx_packet *pkt,
520 struct ieee80211_hdr *header, int group100)
522 if (priv->debug_level & IWL_DL_RX)
523 _iwl3945_dbg_report_frame(priv, pkt, header, group100);
527 static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv,
528 struct iwl_rx_packet *pkt,
529 struct ieee80211_hdr *header, int group100)
534 /* This is necessary only for a number of statistics, see the caller. */
535 static int iwl3945_is_network_packet(struct iwl_priv *priv,
536 struct ieee80211_hdr *header)
538 /* Filter incoming packets to determine if they are targeted toward
539 * this network, discarding packets coming from ourselves */
540 switch (priv->iw_mode) {
541 case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */
542 /* packets to our IBSS update information */
543 return !compare_ether_addr(header->addr3, priv->bssid);
544 case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */
545 /* packets to our IBSS update information */
546 return !compare_ether_addr(header->addr2, priv->bssid);
552 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv,
553 struct iwl_rx_mem_buffer *rxb,
554 struct ieee80211_rx_status *stats)
556 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
557 #ifdef CONFIG_IWLWIFI_LEDS
558 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
560 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
561 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
562 short len = le16_to_cpu(rx_hdr->len);
564 /* We received data from the HW, so stop the watchdog */
565 if (unlikely((len + IWL39_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) {
566 IWL_DEBUG_DROP(priv, "Corruption detected!\n");
570 /* We only process data packets if the interface is open */
571 if (unlikely(!priv->is_open)) {
572 IWL_DEBUG_DROP_LIMIT(priv,
573 "Dropping packet while interface is not open.\n");
577 skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt);
578 /* Set the size of the skb to the size of the frame */
579 skb_put(rxb->skb, le16_to_cpu(rx_hdr->len));
581 if (!iwl3945_mod_params.sw_crypto)
582 iwl_set_decrypted_flag(priv,
583 (struct ieee80211_hdr *)rxb->skb->data,
584 le32_to_cpu(rx_end->status), stats);
586 #ifdef CONFIG_IWLWIFI_LEDS
587 if (ieee80211_is_data(hdr->frame_control))
588 priv->rxtxpackets += len;
590 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
594 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
596 static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
597 struct iwl_rx_mem_buffer *rxb)
599 struct ieee80211_hdr *header;
600 struct ieee80211_rx_status rx_status;
601 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
602 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
603 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
604 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
606 u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg);
607 u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff);
611 rx_status.mactime = le64_to_cpu(rx_end->timestamp);
613 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel));
614 rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
615 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
617 rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate);
618 if (rx_status.band == IEEE80211_BAND_5GHZ)
619 rx_status.rate_idx -= IWL_FIRST_OFDM_RATE;
621 rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags &
622 RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
624 /* set the preamble flag if appropriate */
625 if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
626 rx_status.flag |= RX_FLAG_SHORTPRE;
628 if ((unlikely(rx_stats->phy_count > 20))) {
629 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n",
630 rx_stats->phy_count);
634 if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR)
635 || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
636 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status);
642 /* Convert 3945's rssi indicator to dBm */
643 rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET;
645 /* Set default noise value to -127 */
646 if (priv->last_rx_noise == 0)
647 priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
649 /* 3945 provides noise info for OFDM frames only.
650 * sig_avg and noise_diff are measured by the 3945's digital signal
651 * processor (DSP), and indicate linear levels of signal level and
652 * distortion/noise within the packet preamble after
653 * automatic gain control (AGC). sig_avg should stay fairly
654 * constant if the radio's AGC is working well.
655 * Since these values are linear (not dB or dBm), linear
656 * signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
657 * Convert linear SNR to dB SNR, then subtract that from rssi dBm
658 * to obtain noise level in dBm.
659 * Calculate rx_status.signal (quality indicator in %) based on SNR. */
660 if (rx_stats_noise_diff) {
661 snr = rx_stats_sig_avg / rx_stats_noise_diff;
662 rx_status.noise = rx_status.signal -
663 iwl3945_calc_db_from_ratio(snr);
664 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
667 /* If noise info not available, calculate signal quality indicator (%)
668 * using just the dBm signal level. */
670 rx_status.noise = priv->last_rx_noise;
671 rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
675 IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
676 rx_status.signal, rx_status.noise, rx_status.qual,
677 rx_stats_sig_avg, rx_stats_noise_diff);
679 header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
681 network_packet = iwl3945_is_network_packet(priv, header);
683 IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
684 network_packet ? '*' : ' ',
685 le16_to_cpu(rx_hdr->channel),
686 rx_status.signal, rx_status.signal,
687 rx_status.noise, rx_status.rate_idx);
689 /* Set "1" to report good data frames in groups of 100 */
690 iwl3945_dbg_report_frame(priv, pkt, header, 1);
692 if (network_packet) {
693 priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp);
694 priv->last_tsf = le64_to_cpu(rx_end->timestamp);
695 priv->last_rx_rssi = rx_status.signal;
696 priv->last_rx_noise = rx_status.noise;
699 iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status);
702 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
703 struct iwl_tx_queue *txq,
704 dma_addr_t addr, u16 len, u8 reset, u8 pad)
708 struct iwl3945_tfd *tfd, *tfd_tmp;
711 tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
712 tfd = &tfd_tmp[q->write_ptr];
715 memset(tfd, 0, sizeof(*tfd));
717 count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
719 if ((count >= NUM_TFD_CHUNKS) || (count < 0)) {
720 IWL_ERR(priv, "Error can not send more than %d chunks\n",
725 tfd->tbs[count].addr = cpu_to_le32(addr);
726 tfd->tbs[count].len = cpu_to_le32(len);
730 tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) |
731 TFD_CTL_PAD_SET(pad));
737 * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
739 * Does NOT advance any indexes
741 void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
743 struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds;
744 int index = txq->q.read_ptr;
745 struct iwl3945_tfd *tfd = &tfd_tmp[index];
746 struct pci_dev *dev = priv->pci_dev;
751 counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags));
752 if (counter > NUM_TFD_CHUNKS) {
753 IWL_ERR(priv, "Too many chunks: %i\n", counter);
754 /* @todo issue fatal error, it is quite serious situation */
760 pci_unmap_single(dev,
761 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
762 pci_unmap_len(&txq->cmd[index]->meta, len),
765 /* unmap chunks if any */
767 for (i = 1; i < counter; i++) {
768 pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr),
769 le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE);
770 if (txq->txb[txq->q.read_ptr].skb[0]) {
771 struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0];
772 if (txq->txb[txq->q.read_ptr].skb[0]) {
773 /* Can be called from interrupt context */
774 dev_kfree_skb_any(skb);
775 txq->txb[txq->q.read_ptr].skb[0] = NULL;
782 u8 iwl3945_hw_find_station(struct iwl_priv *priv, const u8 *addr)
784 int i, start = IWL_AP_ID;
785 int ret = IWL_INVALID_STATION;
788 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
789 (priv->iw_mode == NL80211_IFTYPE_AP))
792 if (is_broadcast_ether_addr(addr))
793 return priv->hw_params.bcast_sta_id;
795 spin_lock_irqsave(&priv->sta_lock, flags);
796 for (i = start; i < priv->hw_params.max_stations; i++)
797 if ((priv->stations_39[i].used) &&
799 (priv->stations_39[i].sta.sta.addr, addr))) {
804 IWL_DEBUG_INFO(priv, "can not find STA %pM (total %d)\n",
805 addr, priv->num_stations);
807 spin_unlock_irqrestore(&priv->sta_lock, flags);
812 * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
815 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd,
816 struct ieee80211_tx_info *info,
817 struct ieee80211_hdr *hdr, int sta_id, int tx_id)
819 u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value;
820 u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1);
826 __le16 fc = hdr->frame_control;
827 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
829 rate = iwl3945_rates[rate_index].plcp;
830 tx_flags = tx->tx_flags;
832 /* We need to figure out how to get the sta->supp_rates while
833 * in this running context */
834 rate_mask = IWL_RATES_MASK;
836 if (tx_id >= IWL_CMD_QUEUE_NUM)
841 if (ieee80211_is_probe_resp(fc)) {
842 data_retry_limit = 3;
843 if (data_retry_limit < rts_retry_limit)
844 rts_retry_limit = data_retry_limit;
846 data_retry_limit = IWL_DEFAULT_TX_RETRY;
848 if (priv->data_retry_limit != -1)
849 data_retry_limit = priv->data_retry_limit;
851 if (ieee80211_is_mgmt(fc)) {
852 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
853 case cpu_to_le16(IEEE80211_STYPE_AUTH):
854 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
855 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
856 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
857 if (tx_flags & TX_CMD_FLG_RTS_MSK) {
858 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
859 tx_flags |= TX_CMD_FLG_CTS_MSK;
867 tx->rts_retry_limit = rts_retry_limit;
868 tx->data_retry_limit = data_retry_limit;
870 tx->tx_flags = tx_flags;
874 ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF;
877 tx->supp_rates[1] = (rate_mask & 0xF);
879 IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
880 "cck/ofdm mask: 0x%x/0x%x\n", sta_id,
881 tx->rate, le32_to_cpu(tx->tx_flags),
882 tx->supp_rates[1], tx->supp_rates[0]);
885 u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate, u8 flags)
887 unsigned long flags_spin;
888 struct iwl3945_station_entry *station;
890 if (sta_id == IWL_INVALID_STATION)
891 return IWL_INVALID_STATION;
893 spin_lock_irqsave(&priv->sta_lock, flags_spin);
894 station = &priv->stations_39[sta_id];
896 station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK;
897 station->sta.rate_n_flags = cpu_to_le16(tx_rate);
898 station->sta.mode = STA_CONTROL_MODIFY_MSK;
900 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
902 iwl_send_add_sta(priv,
903 (struct iwl_addsta_cmd *)&station->sta, flags);
904 IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n",
909 static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
914 spin_lock_irqsave(&priv->lock, flags);
915 ret = iwl_grab_nic_access(priv);
917 spin_unlock_irqrestore(&priv->lock, flags);
921 if (src == IWL_PWR_SRC_VAUX) {
922 if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) {
923 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
924 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
925 ~APMG_PS_CTRL_MSK_PWR_SRC);
926 iwl_release_nic_access(priv);
928 iwl_poll_bit(priv, CSR_GPIO_IN,
929 CSR_GPIO_IN_VAL_VAUX_PWR_SRC,
930 CSR_GPIO_IN_BIT_AUX_POWER, 5000);
932 iwl_release_nic_access(priv);
935 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
936 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
937 ~APMG_PS_CTRL_MSK_PWR_SRC);
939 iwl_release_nic_access(priv);
940 iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC,
941 CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */
943 spin_unlock_irqrestore(&priv->lock, flags);
948 static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
953 spin_lock_irqsave(&priv->lock, flags);
954 rc = iwl_grab_nic_access(priv);
956 spin_unlock_irqrestore(&priv->lock, flags);
960 iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr);
961 iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma);
962 iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0);
963 iwl_write_direct32(priv, FH39_RCSR_CONFIG(0),
964 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE |
965 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE |
966 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN |
967 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 |
968 (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) |
969 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST |
970 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) |
971 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH);
973 /* fake read to flush all prev I/O */
974 iwl_read_direct32(priv, FH39_RSSR_CTRL);
976 iwl_release_nic_access(priv);
977 spin_unlock_irqrestore(&priv->lock, flags);
982 static int iwl3945_tx_reset(struct iwl_priv *priv)
987 spin_lock_irqsave(&priv->lock, flags);
988 rc = iwl_grab_nic_access(priv);
990 spin_unlock_irqrestore(&priv->lock, flags);
995 iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2);
998 iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01);
1000 /* all 6 fifo are active */
1001 iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f);
1003 iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000);
1004 iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002);
1005 iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004);
1006 iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005);
1008 iwl_write_direct32(priv, FH39_TSSR_CBB_BASE,
1011 iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG,
1012 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON |
1013 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON |
1014 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B |
1015 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON |
1016 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON |
1017 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH |
1018 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH);
1020 iwl_release_nic_access(priv);
1021 spin_unlock_irqrestore(&priv->lock, flags);
1027 * iwl3945_txq_ctx_reset - Reset TX queue context
1029 * Destroys all DMA structures and initialize them again
1031 static int iwl3945_txq_ctx_reset(struct iwl_priv *priv)
1034 int txq_id, slots_num;
1036 iwl3945_hw_txq_ctx_free(priv);
1039 rc = iwl3945_tx_reset(priv);
1044 for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++) {
1045 slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
1046 TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
1047 rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
1050 IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
1058 iwl3945_hw_txq_ctx_free(priv);
1062 static int iwl3945_apm_init(struct iwl_priv *priv)
1066 iwl_power_initialize(priv);
1068 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1069 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1071 /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
1072 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1073 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1075 /* set "initialization complete" bit to move adapter
1076 * D0U* --> D0A* state */
1077 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1079 ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1080 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1082 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1086 ret = iwl_grab_nic_access(priv);
1091 iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT |
1092 APMG_CLK_VAL_BSM_CLK_RQT);
1096 /* disable L1-Active */
1097 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1098 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1100 iwl_release_nic_access(priv);
1105 static void iwl3945_nic_config(struct iwl_priv *priv)
1107 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1108 unsigned long flags;
1111 spin_lock_irqsave(&priv->lock, flags);
1113 if (rev_id & PCI_CFG_REV_ID_BIT_RTP)
1114 IWL_DEBUG_INFO(priv, "RTP type \n");
1115 else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) {
1116 IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n");
1117 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1118 CSR39_HW_IF_CONFIG_REG_BIT_3945_MB);
1120 IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n");
1121 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1122 CSR39_HW_IF_CONFIG_REG_BIT_3945_MM);
1125 if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) {
1126 IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n");
1127 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1128 CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC);
1130 IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n");
1132 if ((eeprom->board_revision & 0xF0) == 0xD0) {
1133 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1134 eeprom->board_revision);
1135 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1136 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1138 IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n",
1139 eeprom->board_revision);
1140 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1141 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE);
1144 if (eeprom->almgor_m_version <= 1) {
1145 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1146 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A);
1147 IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n",
1148 eeprom->almgor_m_version);
1150 IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n",
1151 eeprom->almgor_m_version);
1152 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1153 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B);
1155 spin_unlock_irqrestore(&priv->lock, flags);
1157 if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
1158 IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n");
1160 if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
1161 IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n");
1164 int iwl3945_hw_nic_init(struct iwl_priv *priv)
1168 unsigned long flags;
1169 struct iwl_rx_queue *rxq = &priv->rxq;
1171 spin_lock_irqsave(&priv->lock, flags);
1172 priv->cfg->ops->lib->apm_ops.init(priv);
1173 spin_unlock_irqrestore(&priv->lock, flags);
1175 /* Determine HW type */
1176 rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
1179 IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id);
1181 rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
1185 priv->cfg->ops->lib->apm_ops.config(priv);
1187 /* Allocate the RX queue, or reset if it is already allocated */
1189 rc = iwl_rx_queue_alloc(priv);
1191 IWL_ERR(priv, "Unable to initialize Rx queue\n");
1195 iwl3945_rx_queue_reset(priv, rxq);
1197 iwl3945_rx_replenish(priv);
1199 iwl3945_rx_init(priv, rxq);
1201 spin_lock_irqsave(&priv->lock, flags);
1203 /* Look at using this instead:
1204 rxq->need_update = 1;
1205 iwl_rx_queue_update_write_ptr(priv, rxq);
1208 rc = iwl_grab_nic_access(priv);
1210 spin_unlock_irqrestore(&priv->lock, flags);
1213 iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7);
1214 iwl_release_nic_access(priv);
1216 spin_unlock_irqrestore(&priv->lock, flags);
1218 rc = iwl3945_txq_ctx_reset(priv);
1222 set_bit(STATUS_INIT, &priv->status);
1228 * iwl3945_hw_txq_ctx_free - Free TXQ Context
1230 * Destroy all TX DMA queues and structures
1232 void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv)
1237 for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++)
1238 if (txq_id == IWL_CMD_QUEUE_NUM)
1239 iwl_cmd_queue_free(priv);
1241 iwl_tx_queue_free(priv, txq_id);
1245 void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv)
1248 unsigned long flags;
1250 spin_lock_irqsave(&priv->lock, flags);
1251 if (iwl_grab_nic_access(priv)) {
1252 spin_unlock_irqrestore(&priv->lock, flags);
1253 iwl3945_hw_txq_ctx_free(priv);
1258 iwl_write_prph(priv, ALM_SCD_MODE_REG, 0);
1260 /* reset TFD queues */
1261 for (txq_id = 0; txq_id <= priv->hw_params.max_txq_num; txq_id++) {
1262 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0);
1263 iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS,
1264 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id),
1268 iwl_release_nic_access(priv);
1269 spin_unlock_irqrestore(&priv->lock, flags);
1271 iwl3945_hw_txq_ctx_free(priv);
1274 static int iwl3945_apm_stop_master(struct iwl_priv *priv)
1277 unsigned long flags;
1279 spin_lock_irqsave(&priv->lock, flags);
1281 /* set stop master bit */
1282 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1284 iwl_poll_direct_bit(priv, CSR_RESET,
1285 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1291 spin_unlock_irqrestore(&priv->lock, flags);
1292 IWL_DEBUG_INFO(priv, "stop master\n");
1297 static void iwl3945_apm_stop(struct iwl_priv *priv)
1299 unsigned long flags;
1301 iwl3945_apm_stop_master(priv);
1303 spin_lock_irqsave(&priv->lock, flags);
1305 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1308 /* clear "init complete" move adapter D0A* --> D0U state */
1309 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1310 spin_unlock_irqrestore(&priv->lock, flags);
1313 static int iwl3945_apm_reset(struct iwl_priv *priv)
1316 unsigned long flags;
1318 iwl3945_apm_stop_master(priv);
1320 spin_lock_irqsave(&priv->lock, flags);
1322 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1325 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1327 iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
1328 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1330 rc = iwl_grab_nic_access(priv);
1332 iwl_write_prph(priv, APMG_CLK_CTRL_REG,
1333 APMG_CLK_VAL_BSM_CLK_RQT);
1335 iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0);
1336 iwl_write_prph(priv, APMG_RTC_INT_STT_REG,
1340 iwl_write_prph(priv, APMG_CLK_EN_REG,
1341 APMG_CLK_VAL_DMA_CLK_RQT |
1342 APMG_CLK_VAL_BSM_CLK_RQT);
1345 iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
1346 APMG_PS_CTRL_VAL_RESET_REQ);
1348 iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
1349 APMG_PS_CTRL_VAL_RESET_REQ);
1350 iwl_release_nic_access(priv);
1353 /* Clear the 'host command active' bit... */
1354 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1356 wake_up_interruptible(&priv->wait_command_queue);
1357 spin_unlock_irqrestore(&priv->lock, flags);
1363 * iwl3945_hw_reg_adjust_power_by_temp
1364 * return index delta into power gain settings table
1366 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading)
1368 return (new_reading - old_reading) * (-11) / 100;
1372 * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1374 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature)
1376 return ((temperature < -260) || (temperature > 25)) ? 1 : 0;
1379 int iwl3945_hw_get_temperature(struct iwl_priv *priv)
1381 return iwl_read32(priv, CSR_UCODE_DRV_GP2);
1385 * iwl3945_hw_reg_txpower_get_temperature
1386 * get the current temperature by reading from NIC
1388 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv)
1390 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1393 temperature = iwl3945_hw_get_temperature(priv);
1395 /* driver's okay range is -260 to +25.
1396 * human readable okay range is 0 to +285 */
1397 IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT);
1399 /* handle insane temp reading */
1400 if (iwl3945_hw_reg_temp_out_of_range(temperature)) {
1401 IWL_ERR(priv, "Error bad temperature value %d\n", temperature);
1403 /* if really really hot(?),
1404 * substitute the 3rd band/group's temp measured at factory */
1405 if (priv->last_temperature > 100)
1406 temperature = eeprom->groups[2].temperature;
1407 else /* else use most recent "sane" value from driver */
1408 temperature = priv->last_temperature;
1411 return temperature; /* raw, not "human readable" */
1414 /* Adjust Txpower only if temperature variance is greater than threshold.
1416 * Both are lower than older versions' 9 degrees */
1417 #define IWL_TEMPERATURE_LIMIT_TIMER 6
1420 * is_temp_calib_needed - determines if new calibration is needed
1422 * records new temperature in tx_mgr->temperature.
1423 * replaces tx_mgr->last_temperature *only* if calib needed
1424 * (assumes caller will actually do the calibration!). */
1425 static int is_temp_calib_needed(struct iwl_priv *priv)
1429 priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
1430 temp_diff = priv->temperature - priv->last_temperature;
1432 /* get absolute value */
1433 if (temp_diff < 0) {
1434 IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff);
1435 temp_diff = -temp_diff;
1436 } else if (temp_diff == 0)
1437 IWL_DEBUG_POWER(priv, "Same temp,\n");
1439 IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff);
1441 /* if we don't need calibration, *don't* update last_temperature */
1442 if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) {
1443 IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n");
1447 IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n");
1449 /* assume that caller will actually do calib ...
1450 * update the "last temperature" value */
1451 priv->last_temperature = priv->temperature;
1455 #define IWL_MAX_GAIN_ENTRIES 78
1456 #define IWL_CCK_FROM_OFDM_POWER_DIFF -5
1457 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1459 /* radio and DSP power table, each step is 1/2 dB.
1460 * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1461 static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = {
1463 {251, 127}, /* 2.4 GHz, highest power */
1540 {3, 95} }, /* 2.4 GHz, lowest power */
1542 {251, 127}, /* 5.x GHz, highest power */
1619 {3, 120} } /* 5.x GHz, lowest power */
1622 static inline u8 iwl3945_hw_reg_fix_power_index(int index)
1626 if (index >= IWL_MAX_GAIN_ENTRIES)
1627 return IWL_MAX_GAIN_ENTRIES - 1;
1631 /* Kick off thermal recalibration check every 60 seconds */
1632 #define REG_RECALIB_PERIOD (60)
1635 * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1637 * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1638 * or 6 Mbit (OFDM) rates.
1640 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index,
1641 s32 rate_index, const s8 *clip_pwrs,
1642 struct iwl_channel_info *ch_info,
1645 struct iwl3945_scan_power_info *scan_power_info;
1649 scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index];
1651 /* use this channel group's 6Mbit clipping/saturation pwr,
1652 * but cap at regulatory scan power restriction (set during init
1653 * based on eeprom channel data) for this channel. */
1654 power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]);
1656 /* further limit to user's max power preference.
1657 * FIXME: Other spectrum management power limitations do not
1658 * seem to apply?? */
1659 power = min(power, priv->tx_power_user_lmt);
1660 scan_power_info->requested_power = power;
1662 /* find difference between new scan *power* and current "normal"
1663 * Tx *power* for 6Mb. Use this difference (x2) to adjust the
1664 * current "normal" temperature-compensated Tx power *index* for
1665 * this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1667 power_index = ch_info->power_info[rate_index].power_table_index
1668 - (power - ch_info->power_info
1669 [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2;
1671 /* store reference index that we use when adjusting *all* scan
1672 * powers. So we can accommodate user (all channel) or spectrum
1673 * management (single channel) power changes "between" temperature
1674 * feedback compensation procedures.
1675 * don't force fit this reference index into gain table; it may be a
1676 * negative number. This will help avoid errors when we're at
1677 * the lower bounds (highest gains, for warmest temperatures)
1680 /* don't exceed table bounds for "real" setting */
1681 power_index = iwl3945_hw_reg_fix_power_index(power_index);
1683 scan_power_info->power_table_index = power_index;
1684 scan_power_info->tpc.tx_gain =
1685 power_gain_table[band_index][power_index].tx_gain;
1686 scan_power_info->tpc.dsp_atten =
1687 power_gain_table[band_index][power_index].dsp_atten;
1691 * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1693 * Configures power settings for all rates for the current channel,
1694 * using values from channel info struct, and send to NIC
1696 static int iwl3945_send_tx_power(struct iwl_priv *priv)
1699 const struct iwl_channel_info *ch_info = NULL;
1700 struct iwl3945_txpowertable_cmd txpower = {
1701 .channel = priv->active_rxon.channel,
1704 txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1;
1705 ch_info = iwl_get_channel_info(priv,
1707 le16_to_cpu(priv->active_rxon.channel));
1710 "Failed to get channel info for channel %d [%d]\n",
1711 le16_to_cpu(priv->active_rxon.channel), priv->band);
1715 if (!is_channel_valid(ch_info)) {
1716 IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on "
1717 "non-Tx channel.\n");
1721 /* fill cmd with power settings for all rates for current channel */
1722 /* Fill OFDM rate */
1723 for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0;
1724 rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) {
1726 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1727 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1729 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1730 le16_to_cpu(txpower.channel),
1732 txpower.power[i].tpc.tx_gain,
1733 txpower.power[i].tpc.dsp_atten,
1734 txpower.power[i].rate);
1736 /* Fill CCK rates */
1737 for (rate_idx = IWL_FIRST_CCK_RATE;
1738 rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) {
1739 txpower.power[i].tpc = ch_info->power_info[i].tpc;
1740 txpower.power[i].rate = iwl3945_rates[rate_idx].plcp;
1742 IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1743 le16_to_cpu(txpower.channel),
1745 txpower.power[i].tpc.tx_gain,
1746 txpower.power[i].tpc.dsp_atten,
1747 txpower.power[i].rate);
1750 return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD,
1751 sizeof(struct iwl3945_txpowertable_cmd),
1757 * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1758 * @ch_info: Channel to update. Uses power_info.requested_power.
1760 * Replace requested_power and base_power_index ch_info fields for
1763 * Called if user or spectrum management changes power preferences.
1764 * Takes into account h/w and modulation limitations (clip power).
1766 * This does *not* send anything to NIC, just sets up ch_info for one channel.
1768 * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1769 * properly fill out the scan powers, and actual h/w gain settings,
1770 * and send changes to NIC
1772 static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv,
1773 struct iwl_channel_info *ch_info)
1775 struct iwl3945_channel_power_info *power_info;
1776 int power_changed = 0;
1778 const s8 *clip_pwrs;
1781 /* Get this chnlgrp's rate-to-max/clip-powers table */
1782 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1784 /* Get this channel's rate-to-current-power settings table */
1785 power_info = ch_info->power_info;
1787 /* update OFDM Txpower settings */
1788 for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE;
1789 i++, ++power_info) {
1792 /* limit new power to be no more than h/w capability */
1793 power = min(ch_info->curr_txpow, clip_pwrs[i]);
1794 if (power == power_info->requested_power)
1797 /* find difference between old and new requested powers,
1798 * update base (non-temp-compensated) power index */
1799 delta_idx = (power - power_info->requested_power) * 2;
1800 power_info->base_power_index -= delta_idx;
1802 /* save new requested power value */
1803 power_info->requested_power = power;
1808 /* update CCK Txpower settings, based on OFDM 12M setting ...
1809 * ... all CCK power settings for a given channel are the *same*. */
1810 if (power_changed) {
1812 ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1813 requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF;
1815 /* do all CCK rates' iwl3945_channel_power_info structures */
1816 for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) {
1817 power_info->requested_power = power;
1818 power_info->base_power_index =
1819 ch_info->power_info[IWL_RATE_12M_INDEX_TABLE].
1820 base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF;
1829 * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1831 * NOTE: Returned power limit may be less (but not more) than requested,
1832 * based strictly on regulatory (eeprom and spectrum mgt) limitations
1833 * (no consideration for h/w clipping limitations).
1835 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info)
1840 /* if we're using TGd limits, use lower of TGd or EEPROM */
1841 if (ch_info->tgd_data.max_power != 0)
1842 max_power = min(ch_info->tgd_data.max_power,
1843 ch_info->eeprom.max_power_avg);
1845 /* else just use EEPROM limits */
1848 max_power = ch_info->eeprom.max_power_avg;
1850 return min(max_power, ch_info->max_power_avg);
1854 * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1856 * Compensate txpower settings of *all* channels for temperature.
1857 * This only accounts for the difference between current temperature
1858 * and the factory calibration temperatures, and bases the new settings
1859 * on the channel's base_power_index.
1861 * If RxOn is "associated", this sends the new Txpower to NIC!
1863 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv)
1865 struct iwl_channel_info *ch_info = NULL;
1866 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
1868 const s8 *clip_pwrs; /* array of h/w max power levels for each rate */
1874 int temperature = priv->temperature;
1876 /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1877 for (i = 0; i < priv->channel_count; i++) {
1878 ch_info = &priv->channel_info[i];
1879 a_band = is_channel_a_band(ch_info);
1881 /* Get this chnlgrp's factory calibration temperature */
1882 ref_temp = (s16)eeprom->groups[ch_info->group_index].
1885 /* get power index adjustment based on current and factory
1887 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
1890 /* set tx power value for all rates, OFDM and CCK */
1891 for (rate_index = 0; rate_index < IWL_RATE_COUNT;
1894 ch_info->power_info[rate_index].base_power_index;
1896 /* temperature compensate */
1897 power_idx += delta_index;
1899 /* stay within table range */
1900 power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
1901 ch_info->power_info[rate_index].
1902 power_table_index = (u8) power_idx;
1903 ch_info->power_info[rate_index].tpc =
1904 power_gain_table[a_band][power_idx];
1907 /* Get this chnlgrp's rate-to-max/clip-powers table */
1908 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
1910 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1911 for (scan_tbl_index = 0;
1912 scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
1913 s32 actual_index = (scan_tbl_index == 0) ?
1914 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
1915 iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
1916 actual_index, clip_pwrs,
1921 /* send Txpower command for current channel to ucode */
1922 return priv->cfg->ops->lib->send_tx_power(priv);
1925 int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
1927 struct iwl_channel_info *ch_info;
1932 if (priv->tx_power_user_lmt == power) {
1933 IWL_DEBUG_POWER(priv, "Requested Tx power same as current "
1934 "limit: %ddBm.\n", power);
1938 IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power);
1939 priv->tx_power_user_lmt = power;
1941 /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1943 for (i = 0; i < priv->channel_count; i++) {
1944 ch_info = &priv->channel_info[i];
1945 a_band = is_channel_a_band(ch_info);
1947 /* find minimum power of all user and regulatory constraints
1948 * (does not consider h/w clipping limitations) */
1949 max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info);
1950 max_power = min(power, max_power);
1951 if (max_power != ch_info->curr_txpow) {
1952 ch_info->curr_txpow = max_power;
1954 /* this considers the h/w clipping limitations */
1955 iwl3945_hw_reg_set_new_power(priv, ch_info);
1959 /* update txpower settings for all channels,
1960 * send to NIC if associated. */
1961 is_temp_calib_needed(priv);
1962 iwl3945_hw_reg_comp_txpower_temp(priv);
1967 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
1970 struct iwl_rx_packet *res = NULL;
1971 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1972 struct iwl_host_cmd cmd = {
1973 .id = REPLY_RXON_ASSOC,
1974 .len = sizeof(rxon_assoc),
1975 .meta.flags = CMD_WANT_SKB,
1976 .data = &rxon_assoc,
1978 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1979 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1981 if ((rxon1->flags == rxon2->flags) &&
1982 (rxon1->filter_flags == rxon2->filter_flags) &&
1983 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1984 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1985 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
1989 rxon_assoc.flags = priv->staging_rxon.flags;
1990 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1991 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1992 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1993 rxon_assoc.reserved = 0;
1995 rc = iwl_send_cmd_sync(priv, &cmd);
1999 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2000 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2001 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
2005 priv->alloc_rxb_skb--;
2006 dev_kfree_skb_any(cmd.meta.u.skb);
2012 * iwl3945_commit_rxon - commit staging_rxon to hardware
2014 * The RXON command in staging_rxon is committed to the hardware and
2015 * the active_rxon structure is updated with the new data. This
2016 * function correctly transitions out of the RXON_ASSOC_MSK state if
2017 * a HW tune is required based on the RXON structure changes.
2019 static int iwl3945_commit_rxon(struct iwl_priv *priv)
2021 /* cast away the const for active_rxon in this function */
2022 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
2023 struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
2026 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
2028 if (!iwl_is_alive(priv))
2031 /* always get timestamp with Rx frame */
2032 staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
2034 /* select antenna */
2035 staging_rxon->flags &=
2036 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
2037 staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
2039 rc = iwl_check_rxon_cmd(priv);
2041 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
2045 /* If we don't need to send a full RXON, we can use
2046 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
2047 * and other flags for the current radio configuration. */
2048 if (!iwl_full_rxon_required(priv)) {
2049 rc = iwl_send_rxon_assoc(priv);
2051 IWL_ERR(priv, "Error setting RXON_ASSOC "
2052 "configuration (%d).\n", rc);
2056 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
2061 /* If we are currently associated and the new config requires
2062 * an RXON_ASSOC and the new config wants the associated mask enabled,
2063 * we must clear the associated from the active configuration
2064 * before we apply the new config */
2065 if (iwl_is_associated(priv) && new_assoc) {
2066 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
2067 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2070 * reserved4 and 5 could have been filled by the iwlcore code.
2071 * Let's clear them before pushing to the 3945.
2073 active_rxon->reserved4 = 0;
2074 active_rxon->reserved5 = 0;
2075 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
2076 sizeof(struct iwl3945_rxon_cmd),
2077 &priv->active_rxon);
2079 /* If the mask clearing failed then we set
2080 * active_rxon back to what it was previously */
2082 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
2083 IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
2084 "configuration (%d).\n", rc);
2089 IWL_DEBUG_INFO(priv, "Sending RXON\n"
2090 "* with%s RXON_FILTER_ASSOC_MSK\n"
2093 (new_assoc ? "" : "out"),
2094 le16_to_cpu(staging_rxon->channel),
2095 staging_rxon->bssid_addr);
2098 * reserved4 and 5 could have been filled by the iwlcore code.
2099 * Let's clear them before pushing to the 3945.
2101 staging_rxon->reserved4 = 0;
2102 staging_rxon->reserved5 = 0;
2104 iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
2106 /* Apply the new configuration */
2107 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
2108 sizeof(struct iwl3945_rxon_cmd),
2111 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
2115 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
2117 priv->cfg->ops->smgmt->clear_station_table(priv);
2119 /* If we issue a new RXON command which required a tune then we must
2120 * send a new TXPOWER command or we won't be able to Tx any frames */
2121 rc = priv->cfg->ops->lib->send_tx_power(priv);
2123 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
2127 /* Add the broadcast address so we can send broadcast frames */
2128 if (priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL) ==
2129 IWL_INVALID_STATION) {
2130 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
2134 /* If we have set the ASSOC_MSK and we are in BSS mode then
2135 * add the IWL_AP_ID to the station rate table */
2136 if (iwl_is_associated(priv) &&
2137 (priv->iw_mode == NL80211_IFTYPE_STATION))
2138 if (priv->cfg->ops->smgmt->add_station(priv,
2139 priv->active_rxon.bssid_addr, 1, 0, NULL)
2140 == IWL_INVALID_STATION) {
2141 IWL_ERR(priv, "Error adding AP address for transmit\n");
2145 /* Init the hardware's rate fallback order based on the band */
2146 rc = iwl3945_init_hw_rate_table(priv);
2148 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
2155 /* will add 3945 channel switch cmd handling later */
2156 int iwl3945_hw_channel_switch(struct iwl_priv *priv, u16 channel)
2162 * iwl3945_reg_txpower_periodic - called when time to check our temperature.
2164 * -- reset periodic timer
2165 * -- see if temp has changed enough to warrant re-calibration ... if so:
2166 * -- correct coeffs for temp (can reset temp timer)
2167 * -- save this temp as "last",
2168 * -- send new set of gain settings to NIC
2169 * NOTE: This should continue working, even when we're not associated,
2170 * so we can keep our internal table of scan powers current. */
2171 void iwl3945_reg_txpower_periodic(struct iwl_priv *priv)
2173 /* This will kick in the "brute force"
2174 * iwl3945_hw_reg_comp_txpower_temp() below */
2175 if (!is_temp_calib_needed(priv))
2178 /* Set up a new set of temp-adjusted TxPowers, send to NIC.
2179 * This is based *only* on current temperature,
2180 * ignoring any previous power measurements */
2181 iwl3945_hw_reg_comp_txpower_temp(priv);
2184 queue_delayed_work(priv->workqueue,
2185 &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ);
2188 static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work)
2190 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2191 thermal_periodic.work);
2193 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2196 mutex_lock(&priv->mutex);
2197 iwl3945_reg_txpower_periodic(priv);
2198 mutex_unlock(&priv->mutex);
2202 * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2205 * This function is used when initializing channel-info structs.
2207 * NOTE: These channel groups do *NOT* match the bands above!
2208 * These channel groups are based on factory-tested channels;
2209 * on A-band, EEPROM's "group frequency" entries represent the top
2210 * channel in each group 1-4. Group 5 All B/G channels are in group 0.
2212 static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv,
2213 const struct iwl_channel_info *ch_info)
2215 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2216 struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0];
2218 u16 group_index = 0; /* based on factory calib frequencies */
2221 /* Find the group index for the channel ... don't use index 1(?) */
2222 if (is_channel_a_band(ch_info)) {
2223 for (group = 1; group < 5; group++) {
2224 grp_channel = ch_grp[group].group_channel;
2225 if (ch_info->channel <= grp_channel) {
2226 group_index = group;
2230 /* group 4 has a few channels *above* its factory cal freq */
2234 group_index = 0; /* 2.4 GHz, group 0 */
2236 IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel,
2242 * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2244 * Interpolate to get nominal (i.e. at factory calibration temperature) index
2245 * into radio/DSP gain settings table for requested power.
2247 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv,
2249 s32 setting_index, s32 *new_index)
2251 const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL;
2252 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2254 s32 power = 2 * requested_power;
2256 const struct iwl3945_eeprom_txpower_sample *samples;
2261 chnl_grp = &eeprom->groups[setting_index];
2262 samples = chnl_grp->samples;
2263 for (i = 0; i < 5; i++) {
2264 if (power == samples[i].power) {
2265 *new_index = samples[i].gain_index;
2270 if (power > samples[1].power) {
2273 } else if (power > samples[2].power) {
2276 } else if (power > samples[3].power) {
2284 denominator = (s32) samples[index1].power - (s32) samples[index0].power;
2285 if (denominator == 0)
2287 gains0 = (s32) samples[index0].gain_index * (1 << 19);
2288 gains1 = (s32) samples[index1].gain_index * (1 << 19);
2289 res = gains0 + (gains1 - gains0) *
2290 ((s32) power - (s32) samples[index0].power) / denominator +
2292 *new_index = res >> 19;
2296 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv)
2300 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2301 const struct iwl3945_eeprom_txpower_group *group;
2303 IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n");
2305 for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) {
2306 s8 *clip_pwrs; /* table of power levels for each rate */
2307 s8 satur_pwr; /* saturation power for each chnl group */
2308 group = &eeprom->groups[i];
2310 /* sanity check on factory saturation power value */
2311 if (group->saturation_power < 40) {
2312 IWL_WARN(priv, "Error: saturation power is %d, "
2313 "less than minimum expected 40\n",
2314 group->saturation_power);
2319 * Derive requested power levels for each rate, based on
2320 * hardware capabilities (saturation power for band).
2321 * Basic value is 3dB down from saturation, with further
2322 * power reductions for highest 3 data rates. These
2323 * backoffs provide headroom for high rate modulation
2324 * power peaks, without too much distortion (clipping).
2326 /* we'll fill in this array with h/w max power levels */
2327 clip_pwrs = (s8 *) priv->clip39_groups[i].clip_powers;
2329 /* divide factory saturation power by 2 to find -3dB level */
2330 satur_pwr = (s8) (group->saturation_power >> 1);
2332 /* fill in channel group's nominal powers for each rate */
2333 for (rate_index = 0;
2334 rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) {
2335 switch (rate_index) {
2336 case IWL_RATE_36M_INDEX_TABLE:
2337 if (i == 0) /* B/G */
2338 *clip_pwrs = satur_pwr;
2340 *clip_pwrs = satur_pwr - 5;
2342 case IWL_RATE_48M_INDEX_TABLE:
2344 *clip_pwrs = satur_pwr - 7;
2346 *clip_pwrs = satur_pwr - 10;
2348 case IWL_RATE_54M_INDEX_TABLE:
2350 *clip_pwrs = satur_pwr - 9;
2352 *clip_pwrs = satur_pwr - 12;
2355 *clip_pwrs = satur_pwr;
2363 * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2365 * Second pass (during init) to set up priv->channel_info
2367 * Set up Tx-power settings in our channel info database for each VALID
2368 * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2369 * and current temperature.
2371 * Since this is based on current temperature (at init time), these values may
2372 * not be valid for very long, but it gives us a starting/default point,
2373 * and allows us to active (i.e. using Tx) scan.
2375 * This does *not* write values to NIC, just sets up our internal table.
2377 int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv)
2379 struct iwl_channel_info *ch_info = NULL;
2380 struct iwl3945_channel_power_info *pwr_info;
2381 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
2385 const s8 *clip_pwrs; /* array of power levels for each rate */
2388 u8 pwr_index, base_pwr_index, a_band;
2392 /* save temperature reference,
2393 * so we can determine next time to calibrate */
2394 temperature = iwl3945_hw_reg_txpower_get_temperature(priv);
2395 priv->last_temperature = temperature;
2397 iwl3945_hw_reg_init_channel_groups(priv);
2399 /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2400 for (i = 0, ch_info = priv->channel_info; i < priv->channel_count;
2402 a_band = is_channel_a_band(ch_info);
2403 if (!is_channel_valid(ch_info))
2406 /* find this channel's channel group (*not* "band") index */
2407 ch_info->group_index =
2408 iwl3945_hw_reg_get_ch_grp_index(priv, ch_info);
2410 /* Get this chnlgrp's rate->max/clip-powers table */
2411 clip_pwrs = priv->clip39_groups[ch_info->group_index].clip_powers;
2413 /* calculate power index *adjustment* value according to
2414 * diff between current temperature and factory temperature */
2415 delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature,
2416 eeprom->groups[ch_info->group_index].
2419 IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n",
2420 ch_info->channel, delta_index, temperature +
2423 /* set tx power value for all OFDM rates */
2424 for (rate_index = 0; rate_index < IWL_OFDM_RATES;
2426 s32 uninitialized_var(power_idx);
2429 /* use channel group's clip-power table,
2430 * but don't exceed channel's max power */
2431 s8 pwr = min(ch_info->max_power_avg,
2432 clip_pwrs[rate_index]);
2434 pwr_info = &ch_info->power_info[rate_index];
2436 /* get base (i.e. at factory-measured temperature)
2437 * power table index for this rate's power */
2438 rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr,
2439 ch_info->group_index,
2442 IWL_ERR(priv, "Invalid power index\n");
2445 pwr_info->base_power_index = (u8) power_idx;
2447 /* temperature compensate */
2448 power_idx += delta_index;
2450 /* stay within range of gain table */
2451 power_idx = iwl3945_hw_reg_fix_power_index(power_idx);
2453 /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2454 pwr_info->requested_power = pwr;
2455 pwr_info->power_table_index = (u8) power_idx;
2456 pwr_info->tpc.tx_gain =
2457 power_gain_table[a_band][power_idx].tx_gain;
2458 pwr_info->tpc.dsp_atten =
2459 power_gain_table[a_band][power_idx].dsp_atten;
2462 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2463 pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE];
2464 power = pwr_info->requested_power +
2465 IWL_CCK_FROM_OFDM_POWER_DIFF;
2466 pwr_index = pwr_info->power_table_index +
2467 IWL_CCK_FROM_OFDM_INDEX_DIFF;
2468 base_pwr_index = pwr_info->base_power_index +
2469 IWL_CCK_FROM_OFDM_INDEX_DIFF;
2471 /* stay within table range */
2472 pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index);
2473 gain = power_gain_table[a_band][pwr_index].tx_gain;
2474 dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten;
2476 /* fill each CCK rate's iwl3945_channel_power_info structure
2477 * NOTE: All CCK-rate Txpwrs are the same for a given chnl!
2478 * NOTE: CCK rates start at end of OFDM rates! */
2479 for (rate_index = 0;
2480 rate_index < IWL_CCK_RATES; rate_index++) {
2481 pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES];
2482 pwr_info->requested_power = power;
2483 pwr_info->power_table_index = pwr_index;
2484 pwr_info->base_power_index = base_pwr_index;
2485 pwr_info->tpc.tx_gain = gain;
2486 pwr_info->tpc.dsp_atten = dsp_atten;
2489 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2490 for (scan_tbl_index = 0;
2491 scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) {
2492 s32 actual_index = (scan_tbl_index == 0) ?
2493 IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE;
2494 iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index,
2495 actual_index, clip_pwrs, ch_info, a_band);
2502 int iwl3945_hw_rxq_stop(struct iwl_priv *priv)
2505 unsigned long flags;
2507 spin_lock_irqsave(&priv->lock, flags);
2508 rc = iwl_grab_nic_access(priv);
2510 spin_unlock_irqrestore(&priv->lock, flags);
2514 iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0);
2515 rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS,
2516 FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
2518 IWL_ERR(priv, "Can't stop Rx DMA.\n");
2520 iwl_release_nic_access(priv);
2521 spin_unlock_irqrestore(&priv->lock, flags);
2526 int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
2529 unsigned long flags;
2530 int txq_id = txq->q.id;
2532 struct iwl3945_shared *shared_data = priv->shared_virt;
2534 shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr);
2536 spin_lock_irqsave(&priv->lock, flags);
2537 rc = iwl_grab_nic_access(priv);
2539 spin_unlock_irqrestore(&priv->lock, flags);
2542 iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0);
2543 iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0);
2545 iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id),
2546 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT |
2547 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF |
2548 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD |
2549 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL |
2550 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE);
2551 iwl_release_nic_access(priv);
2553 /* fake read to flush all prev. writes */
2554 iwl_read32(priv, FH39_TSSR_CBB_BASE);
2555 spin_unlock_irqrestore(&priv->lock, flags);
2563 static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len)
2567 return sizeof(struct iwl3945_rxon_cmd);
2568 case POWER_TABLE_CMD:
2569 return sizeof(struct iwl3945_powertable_cmd);
2575 static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
2577 u16 size = (u16)sizeof(struct iwl3945_addsta_cmd);
2578 memcpy(data, cmd, size);
2583 * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2585 int iwl3945_init_hw_rate_table(struct iwl_priv *priv)
2587 int rc, i, index, prev_index;
2588 struct iwl3945_rate_scaling_cmd rate_cmd = {
2589 .reserved = {0, 0, 0},
2591 struct iwl3945_rate_scaling_info *table = rate_cmd.table;
2593 for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) {
2594 index = iwl3945_rates[i].table_rs_index;
2596 table[index].rate_n_flags =
2597 iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0);
2598 table[index].try_cnt = priv->retry_rate;
2599 prev_index = iwl3945_get_prev_ieee_rate(i);
2600 table[index].next_rate_index =
2601 iwl3945_rates[prev_index].table_rs_index;
2604 switch (priv->band) {
2605 case IEEE80211_BAND_5GHZ:
2606 IWL_DEBUG_RATE(priv, "Select A mode rate scale\n");
2607 /* If one of the following CCK rates is used,
2608 * have it fall back to the 6M OFDM rate */
2609 for (i = IWL_RATE_1M_INDEX_TABLE;
2610 i <= IWL_RATE_11M_INDEX_TABLE; i++)
2611 table[i].next_rate_index =
2612 iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2614 /* Don't fall back to CCK rates */
2615 table[IWL_RATE_12M_INDEX_TABLE].next_rate_index =
2616 IWL_RATE_9M_INDEX_TABLE;
2618 /* Don't drop out of OFDM rates */
2619 table[IWL_RATE_6M_INDEX_TABLE].next_rate_index =
2620 iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index;
2623 case IEEE80211_BAND_2GHZ:
2624 IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n");
2625 /* If an OFDM rate is used, have it fall back to the
2628 if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) &&
2629 iwl_is_associated(priv)) {
2631 index = IWL_FIRST_CCK_RATE;
2632 for (i = IWL_RATE_6M_INDEX_TABLE;
2633 i <= IWL_RATE_54M_INDEX_TABLE; i++)
2634 table[i].next_rate_index =
2635 iwl3945_rates[index].table_rs_index;
2637 index = IWL_RATE_11M_INDEX_TABLE;
2638 /* CCK shouldn't fall back to OFDM... */
2639 table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE;
2648 /* Update the rate scaling for control frame Tx */
2649 rate_cmd.table_id = 0;
2650 rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2655 /* Update the rate scaling for data frame Tx */
2656 rate_cmd.table_id = 1;
2657 return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd),
2661 /* Called when initializing driver */
2662 int iwl3945_hw_set_hw_params(struct iwl_priv *priv)
2664 memset((void *)&priv->hw_params, 0,
2665 sizeof(struct iwl_hw_params));
2668 pci_alloc_consistent(priv->pci_dev,
2669 sizeof(struct iwl3945_shared),
2670 &priv->shared_phys);
2672 if (!priv->shared_virt) {
2673 IWL_ERR(priv, "failed to allocate pci memory\n");
2674 mutex_unlock(&priv->mutex);
2678 /* Assign number of Usable TX queues */
2679 priv->hw_params.max_txq_num = TFD_QUEUE_MAX;
2681 priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd);
2682 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_3K;
2683 priv->hw_params.max_pkt_size = 2342;
2684 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
2685 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
2686 priv->hw_params.max_stations = IWL3945_STATION_COUNT;
2687 priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID;
2689 priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR;
2694 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv,
2695 struct iwl3945_frame *frame, u8 rate)
2697 struct iwl3945_tx_beacon_cmd *tx_beacon_cmd;
2698 unsigned int frame_size;
2700 tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u;
2701 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
2703 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
2704 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2706 frame_size = iwl3945_fill_beacon_frame(priv,
2707 tx_beacon_cmd->frame,
2708 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
2710 BUG_ON(frame_size > MAX_MPDU_SIZE);
2711 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
2713 tx_beacon_cmd->tx.rate = rate;
2714 tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
2715 TX_CMD_FLG_TSF_MSK);
2717 /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2718 tx_beacon_cmd->tx.supp_rates[0] =
2719 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2721 tx_beacon_cmd->tx.supp_rates[1] =
2722 (IWL_CCK_BASIC_RATES_MASK & 0xF);
2724 return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size;
2727 void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv)
2729 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
2730 priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx;
2733 void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv)
2735 INIT_DELAYED_WORK(&priv->thermal_periodic,
2736 iwl3945_bg_reg_txpower_periodic);
2739 void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv)
2741 cancel_delayed_work(&priv->thermal_periodic);
2744 /* check contents of special bootstrap uCode SRAM */
2745 static int iwl3945_verify_bsm(struct iwl_priv *priv)
2747 __le32 *image = priv->ucode_boot.v_addr;
2748 u32 len = priv->ucode_boot.len;
2752 IWL_DEBUG_INFO(priv, "Begin verify bsm\n");
2754 /* verify BSM SRAM contents */
2755 val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
2756 for (reg = BSM_SRAM_LOWER_BOUND;
2757 reg < BSM_SRAM_LOWER_BOUND + len;
2758 reg += sizeof(u32), image++) {
2759 val = iwl_read_prph(priv, reg);
2760 if (val != le32_to_cpu(*image)) {
2761 IWL_ERR(priv, "BSM uCode verification failed at "
2762 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2763 BSM_SRAM_LOWER_BOUND,
2764 reg - BSM_SRAM_LOWER_BOUND, len,
2765 val, le32_to_cpu(*image));
2770 IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n");
2776 /******************************************************************************
2778 * EEPROM related functions
2780 ******************************************************************************/
2783 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2784 * embedded controller) as EEPROM reader; each read is a series of pulses
2785 * to/from the EEPROM chip, not a single event, so even reads could conflict
2786 * if they weren't arbitrated by some ownership mechanism. Here, the driver
2787 * simply claims ownership, which should be safe when this function is called
2788 * (i.e. before loading uCode!).
2790 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
2792 _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
2797 static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv)
2803 * iwl3945_load_bsm - Load bootstrap instructions
2807 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2808 * in special SRAM that does not power down during RFKILL. When powering back
2809 * up after power-saving sleeps (or during initial uCode load), the BSM loads
2810 * the bootstrap program into the on-board processor, and starts it.
2812 * The bootstrap program loads (via DMA) instructions and data for a new
2813 * program from host DRAM locations indicated by the host driver in the
2814 * BSM_DRAM_* registers. Once the new program is loaded, it starts
2817 * When initializing the NIC, the host driver points the BSM to the
2818 * "initialize" uCode image. This uCode sets up some internal data, then
2819 * notifies host via "initialize alive" that it is complete.
2821 * The host then replaces the BSM_DRAM_* pointer values to point to the
2822 * normal runtime uCode instructions and a backup uCode data cache buffer
2823 * (filled initially with starting data values for the on-board processor),
2824 * then triggers the "initialize" uCode to load and launch the runtime uCode,
2825 * which begins normal operation.
2827 * When doing a power-save shutdown, runtime uCode saves data SRAM into
2828 * the backup data cache in DRAM before SRAM is powered down.
2830 * When powering back up, the BSM loads the bootstrap program. This reloads
2831 * the runtime uCode instructions and the backup data cache into SRAM,
2832 * and re-launches the runtime uCode from where it left off.
2834 static int iwl3945_load_bsm(struct iwl_priv *priv)
2836 __le32 *image = priv->ucode_boot.v_addr;
2837 u32 len = priv->ucode_boot.len;
2847 IWL_DEBUG_INFO(priv, "Begin load bsm\n");
2849 /* make sure bootstrap program is no larger than BSM's SRAM size */
2850 if (len > IWL39_MAX_BSM_SIZE)
2853 /* Tell bootstrap uCode where to find the "Initialize" uCode
2854 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2855 * NOTE: iwl3945_initialize_alive_start() will replace these values,
2856 * after the "initialize" uCode has run, to point to
2857 * runtime/protocol instructions and backup data cache. */
2858 pinst = priv->ucode_init.p_addr;
2859 pdata = priv->ucode_init_data.p_addr;
2860 inst_len = priv->ucode_init.len;
2861 data_len = priv->ucode_init_data.len;
2863 rc = iwl_grab_nic_access(priv);
2867 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2868 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2869 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
2870 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
2872 /* Fill BSM memory with bootstrap instructions */
2873 for (reg_offset = BSM_SRAM_LOWER_BOUND;
2874 reg_offset < BSM_SRAM_LOWER_BOUND + len;
2875 reg_offset += sizeof(u32), image++)
2876 _iwl_write_prph(priv, reg_offset,
2877 le32_to_cpu(*image));
2879 rc = iwl3945_verify_bsm(priv);
2881 iwl_release_nic_access(priv);
2885 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2886 iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
2887 iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
2888 IWL39_RTC_INST_LOWER_BOUND);
2889 iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
2891 /* Load bootstrap code into instruction SRAM now,
2892 * to prepare to load "initialize" uCode */
2893 iwl_write_prph(priv, BSM_WR_CTRL_REG,
2894 BSM_WR_CTRL_REG_BIT_START);
2896 /* Wait for load of bootstrap uCode to finish */
2897 for (i = 0; i < 100; i++) {
2898 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
2899 if (!(done & BSM_WR_CTRL_REG_BIT_START))
2904 IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i);
2906 IWL_ERR(priv, "BSM write did not complete!\n");
2910 /* Enable future boot loads whenever power management unit triggers it
2911 * (e.g. when powering back up after power-save shutdown) */
2912 iwl_write_prph(priv, BSM_WR_CTRL_REG,
2913 BSM_WR_CTRL_REG_BIT_START_EN);
2915 iwl_release_nic_access(priv);
2920 static struct iwl_hcmd_ops iwl3945_hcmd = {
2921 .rxon_assoc = iwl3945_send_rxon_assoc,
2922 .commit_rxon = iwl3945_commit_rxon,
2925 static struct iwl_lib_ops iwl3945_lib = {
2926 .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd,
2927 .txq_free_tfd = iwl3945_hw_txq_free_tfd,
2928 .txq_init = iwl3945_hw_tx_queue_init,
2929 .load_ucode = iwl3945_load_bsm,
2931 .init = iwl3945_apm_init,
2932 .reset = iwl3945_apm_reset,
2933 .stop = iwl3945_apm_stop,
2934 .config = iwl3945_nic_config,
2935 .set_pwr_src = iwl3945_set_pwr_src,
2938 .regulatory_bands = {
2939 EEPROM_REGULATORY_BAND_1_CHANNELS,
2940 EEPROM_REGULATORY_BAND_2_CHANNELS,
2941 EEPROM_REGULATORY_BAND_3_CHANNELS,
2942 EEPROM_REGULATORY_BAND_4_CHANNELS,
2943 EEPROM_REGULATORY_BAND_5_CHANNELS,
2944 EEPROM_REGULATORY_BAND_NO_FAT,
2945 EEPROM_REGULATORY_BAND_NO_FAT,
2947 .verify_signature = iwlcore_eeprom_verify_signature,
2948 .acquire_semaphore = iwl3945_eeprom_acquire_semaphore,
2949 .release_semaphore = iwl3945_eeprom_release_semaphore,
2950 .query_addr = iwlcore_eeprom_query_addr,
2952 .send_tx_power = iwl3945_send_tx_power,
2953 .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr,
2954 .post_associate = iwl3945_post_associate,
2955 .config_ap = iwl3945_config_ap,
2958 static struct iwl_station_mgmt_ops iwl3945_station_mgmt = {
2959 .add_station = iwl3945_add_station,
2961 .remove_station = iwl3945_remove_station,
2963 .find_station = iwl3945_hw_find_station,
2964 .clear_station_table = iwl3945_clear_stations_table,
2967 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = {
2968 .get_hcmd_size = iwl3945_get_hcmd_size,
2969 .build_addsta_hcmd = iwl3945_build_addsta_hcmd,
2972 static struct iwl_ops iwl3945_ops = {
2973 .lib = &iwl3945_lib,
2974 .hcmd = &iwl3945_hcmd,
2975 .utils = &iwl3945_hcmd_utils,
2976 .smgmt = &iwl3945_station_mgmt,
2979 static struct iwl_cfg iwl3945_bg_cfg = {
2981 .fw_name_pre = IWL3945_FW_PRE,
2982 .ucode_api_max = IWL3945_UCODE_API_MAX,
2983 .ucode_api_min = IWL3945_UCODE_API_MIN,
2985 .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2986 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2987 .ops = &iwl3945_ops,
2988 .mod_params = &iwl3945_mod_params
2991 static struct iwl_cfg iwl3945_abg_cfg = {
2993 .fw_name_pre = IWL3945_FW_PRE,
2994 .ucode_api_max = IWL3945_UCODE_API_MAX,
2995 .ucode_api_min = IWL3945_UCODE_API_MIN,
2996 .sku = IWL_SKU_A|IWL_SKU_G,
2997 .eeprom_size = IWL3945_EEPROM_IMG_SIZE,
2998 .eeprom_ver = EEPROM_3945_EEPROM_VERSION,
2999 .ops = &iwl3945_ops,
3000 .mod_params = &iwl3945_mod_params
3003 struct pci_device_id iwl3945_hw_card_ids[] = {
3004 {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)},
3005 {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)},
3006 {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)},
3007 {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)},
3008 {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)},
3009 {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)},
3013 MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids);
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