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
)
102 u32 base
; /* SRAM address of event log header */
103 u32 disable_ptr
; /* SRAM address of event-disable bitmap array */
104 u32 array_size
; /* # of u32 entries in array */
105 u32 evt_disable
[IWL_EVT_DISABLE_SIZE
] = {
106 0x00000000, /* 31 - 0 Event id numbers */
107 0x00000000, /* 63 - 32 */
108 0x00000000, /* 95 - 64 */
109 0x00000000, /* 127 - 96 */
110 0x00000000, /* 159 - 128 */
111 0x00000000, /* 191 - 160 */
112 0x00000000, /* 223 - 192 */
113 0x00000000, /* 255 - 224 */
114 0x00000000, /* 287 - 256 */
115 0x00000000, /* 319 - 288 */
116 0x00000000, /* 351 - 320 */
117 0x00000000, /* 383 - 352 */
118 0x00000000, /* 415 - 384 */
119 0x00000000, /* 447 - 416 */
120 0x00000000, /* 479 - 448 */
121 0x00000000, /* 511 - 480 */
122 0x00000000, /* 543 - 512 */
123 0x00000000, /* 575 - 544 */
124 0x00000000, /* 607 - 576 */
125 0x00000000, /* 639 - 608 */
126 0x00000000, /* 671 - 640 */
127 0x00000000, /* 703 - 672 */
128 0x00000000, /* 735 - 704 */
129 0x00000000, /* 767 - 736 */
130 0x00000000, /* 799 - 768 */
131 0x00000000, /* 831 - 800 */
132 0x00000000, /* 863 - 832 */
133 0x00000000, /* 895 - 864 */
134 0x00000000, /* 927 - 896 */
135 0x00000000, /* 959 - 928 */
136 0x00000000, /* 991 - 960 */
137 0x00000000, /* 1023 - 992 */
138 0x00000000, /* 1055 - 1024 */
139 0x00000000, /* 1087 - 1056 */
140 0x00000000, /* 1119 - 1088 */
141 0x00000000, /* 1151 - 1120 */
142 0x00000000, /* 1183 - 1152 */
143 0x00000000, /* 1215 - 1184 */
144 0x00000000, /* 1247 - 1216 */
145 0x00000000, /* 1279 - 1248 */
146 0x00000000, /* 1311 - 1280 */
147 0x00000000, /* 1343 - 1312 */
148 0x00000000, /* 1375 - 1344 */
149 0x00000000, /* 1407 - 1376 */
150 0x00000000, /* 1439 - 1408 */
151 0x00000000, /* 1471 - 1440 */
152 0x00000000, /* 1503 - 1472 */
155 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
156 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
157 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
161 disable_ptr
= iwl_read_targ_mem(priv
, base
+ (4 * sizeof(u32
)));
162 array_size
= iwl_read_targ_mem(priv
, base
+ (5 * sizeof(u32
)));
164 if (IWL_EVT_DISABLE
&& (array_size
== IWL_EVT_DISABLE_SIZE
)) {
165 IWL_DEBUG_INFO(priv
, "Disabling selected uCode log events at 0x%x\n",
167 for (i
= 0; i
< IWL_EVT_DISABLE_SIZE
; i
++)
168 iwl_write_targ_mem(priv
,
169 disable_ptr
+ (i
* sizeof(u32
)),
173 IWL_DEBUG_INFO(priv
, "Selected uCode log events may be disabled\n");
174 IWL_DEBUG_INFO(priv
, " by writing \"1\"s into disable bitmap\n");
175 IWL_DEBUG_INFO(priv
, " in SRAM at 0x%x, size %d u32s\n",
176 disable_ptr
, array_size
);
181 static int iwl3945_hwrate_to_plcp_idx(u8 plcp
)
185 for (idx
= 0; idx
< IWL_RATE_COUNT
; idx
++)
186 if (iwl3945_rates
[idx
].plcp
== plcp
)
191 #ifdef CONFIG_IWLWIFI_DEBUG
192 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
194 static const char *iwl3945_get_tx_fail_reason(u32 status
)
196 switch (status
& TX_STATUS_MSK
) {
197 case TX_STATUS_SUCCESS
:
199 TX_STATUS_ENTRY(SHORT_LIMIT
);
200 TX_STATUS_ENTRY(LONG_LIMIT
);
201 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
202 TX_STATUS_ENTRY(MGMNT_ABORT
);
203 TX_STATUS_ENTRY(NEXT_FRAG
);
204 TX_STATUS_ENTRY(LIFE_EXPIRE
);
205 TX_STATUS_ENTRY(DEST_PS
);
206 TX_STATUS_ENTRY(ABORTED
);
207 TX_STATUS_ENTRY(BT_RETRY
);
208 TX_STATUS_ENTRY(STA_INVALID
);
209 TX_STATUS_ENTRY(FRAG_DROPPED
);
210 TX_STATUS_ENTRY(TID_DISABLE
);
211 TX_STATUS_ENTRY(FRAME_FLUSHED
);
212 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
213 TX_STATUS_ENTRY(TX_LOCKED
);
214 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
220 static inline const char *iwl3945_get_tx_fail_reason(u32 status
)
227 * get ieee prev rate from rate scale table.
228 * for A and B mode we need to overright prev
231 int iwl3945_rs_next_rate(struct iwl_priv
*priv
, int rate
)
233 int next_rate
= iwl3945_get_prev_ieee_rate(rate
);
235 switch (priv
->band
) {
236 case IEEE80211_BAND_5GHZ
:
237 if (rate
== IWL_RATE_12M_INDEX
)
238 next_rate
= IWL_RATE_9M_INDEX
;
239 else if (rate
== IWL_RATE_6M_INDEX
)
240 next_rate
= IWL_RATE_6M_INDEX
;
242 case IEEE80211_BAND_2GHZ
:
243 if (!(priv
->sta_supp_rates
& IWL_OFDM_RATES_MASK
) &&
244 iwl_is_associated(priv
)) {
245 if (rate
== IWL_RATE_11M_INDEX
)
246 next_rate
= IWL_RATE_5M_INDEX
;
259 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
261 * When FW advances 'R' index, all entries between old and new 'R' index
262 * need to be reclaimed. As result, some free space forms. If there is
263 * enough free space (> low mark), wake the stack that feeds us.
265 static void iwl3945_tx_queue_reclaim(struct iwl_priv
*priv
,
266 int txq_id
, int index
)
268 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
269 struct iwl_queue
*q
= &txq
->q
;
270 struct iwl_tx_info
*tx_info
;
272 BUG_ON(txq_id
== IWL_CMD_QUEUE_NUM
);
274 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
); q
->read_ptr
!= index
;
275 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
277 tx_info
= &txq
->txb
[txq
->q
.read_ptr
];
278 ieee80211_tx_status_irqsafe(priv
->hw
, tx_info
->skb
[0]);
279 tx_info
->skb
[0] = NULL
;
280 priv
->cfg
->ops
->lib
->txq_free_tfd(priv
, txq
);
283 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
284 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
285 priv
->mac80211_registered
)
286 iwl_wake_queue(priv
, txq_id
);
290 * iwl3945_rx_reply_tx - Handle Tx response
292 static void iwl3945_rx_reply_tx(struct iwl_priv
*priv
,
293 struct iwl_rx_mem_buffer
*rxb
)
295 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
296 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
297 int txq_id
= SEQ_TO_QUEUE(sequence
);
298 int index
= SEQ_TO_INDEX(sequence
);
299 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
300 struct ieee80211_tx_info
*info
;
301 struct iwl3945_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
302 u32 status
= le32_to_cpu(tx_resp
->status
);
306 if ((index
>= txq
->q
.n_bd
) || (iwl_queue_used(&txq
->q
, index
) == 0)) {
307 IWL_ERR(priv
, "Read index for DMA queue txq_id (%d) index %d "
308 "is out of range [0-%d] %d %d\n", txq_id
,
309 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
314 info
= IEEE80211_SKB_CB(txq
->txb
[txq
->q
.read_ptr
].skb
[0]);
315 ieee80211_tx_info_clear_status(info
);
317 /* Fill the MRR chain with some info about on-chip retransmissions */
318 rate_idx
= iwl3945_hwrate_to_plcp_idx(tx_resp
->rate
);
319 if (info
->band
== IEEE80211_BAND_5GHZ
)
320 rate_idx
-= IWL_FIRST_OFDM_RATE
;
322 fail
= tx_resp
->failure_frame
;
324 info
->status
.rates
[0].idx
= rate_idx
;
325 info
->status
.rates
[0].count
= fail
+ 1; /* add final attempt */
327 /* tx_status->rts_retry_count = tx_resp->failure_rts; */
328 info
->flags
|= ((status
& TX_STATUS_MSK
) == TX_STATUS_SUCCESS
) ?
329 IEEE80211_TX_STAT_ACK
: 0;
331 IWL_DEBUG_TX(priv
, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
332 txq_id
, iwl3945_get_tx_fail_reason(status
), status
,
333 tx_resp
->rate
, tx_resp
->failure_frame
);
335 IWL_DEBUG_TX_REPLY(priv
, "Tx queue reclaim %d\n", index
);
336 iwl3945_tx_queue_reclaim(priv
, txq_id
, index
);
338 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
339 IWL_ERR(priv
, "TODO: Implement Tx ABORT REQUIRED!!!\n");
344 /*****************************************************************************
346 * Intel PRO/Wireless 3945ABG/BG Network Connection
348 * RX handler implementations
350 *****************************************************************************/
352 void iwl3945_hw_rx_statistics(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
)
354 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
355 IWL_DEBUG_RX(priv
, "Statistics notification received (%d vs %d).\n",
356 (int)sizeof(struct iwl3945_notif_statistics
),
357 le32_to_cpu(pkt
->len
));
359 memcpy(&priv
->statistics_39
, pkt
->u
.raw
, sizeof(priv
->statistics_39
));
361 iwl3945_led_background(priv
);
363 priv
->last_statistics_time
= jiffies
;
366 /******************************************************************************
368 * Misc. internal state and helper functions
370 ******************************************************************************/
371 #ifdef CONFIG_IWLWIFI_DEBUG
374 * iwl3945_report_frame - dump frame to syslog during debug sessions
376 * You may hack this function to show different aspects of received frames,
377 * including selective frame dumps.
378 * group100 parameter selects whether to show 1 out of 100 good frames.
380 static void _iwl3945_dbg_report_frame(struct iwl_priv
*priv
,
381 struct iwl_rx_packet
*pkt
,
382 struct ieee80211_hdr
*header
, int group100
)
385 u32 print_summary
= 0;
386 u32 print_dump
= 0; /* set to 1 to dump all frames' contents */
402 struct iwl3945_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
403 struct iwl3945_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
404 struct iwl3945_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
405 u8
*data
= IWL_RX_DATA(pkt
);
408 fc
= header
->frame_control
;
409 seq_ctl
= le16_to_cpu(header
->seq_ctrl
);
412 channel
= le16_to_cpu(rx_hdr
->channel
);
413 phy_flags
= le16_to_cpu(rx_hdr
->phy_flags
);
414 length
= le16_to_cpu(rx_hdr
->len
);
416 /* end-of-frame status and timestamp */
417 status
= le32_to_cpu(rx_end
->status
);
418 bcn_tmr
= le32_to_cpu(rx_end
->beacon_timestamp
);
419 tsf_low
= le64_to_cpu(rx_end
->timestamp
) & 0x0ffffffff;
420 tsf
= le64_to_cpu(rx_end
->timestamp
);
422 /* signal statistics */
423 rssi
= rx_stats
->rssi
;
425 sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
426 noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
428 to_us
= !compare_ether_addr(header
->addr1
, priv
->mac_addr
);
430 /* if data frame is to us and all is good,
431 * (optionally) print summary for only 1 out of every 100 */
432 if (to_us
&& (fc
& ~cpu_to_le16(IEEE80211_FCTL_PROTECTED
)) ==
433 cpu_to_le16(IEEE80211_FCTL_FROMDS
| IEEE80211_FTYPE_DATA
)) {
436 print_summary
= 1; /* print each frame */
437 else if (priv
->framecnt_to_us
< 100) {
438 priv
->framecnt_to_us
++;
441 priv
->framecnt_to_us
= 0;
446 /* print summary for all other frames */
456 else if (ieee80211_has_retry(fc
))
458 else if (ieee80211_is_assoc_resp(fc
))
460 else if (ieee80211_is_reassoc_resp(fc
))
462 else if (ieee80211_is_probe_resp(fc
)) {
464 print_dump
= 1; /* dump frame contents */
465 } else if (ieee80211_is_beacon(fc
)) {
467 print_dump
= 1; /* dump frame contents */
468 } else if (ieee80211_is_atim(fc
))
470 else if (ieee80211_is_auth(fc
))
472 else if (ieee80211_is_deauth(fc
))
474 else if (ieee80211_is_disassoc(fc
))
479 rate
= iwl3945_hwrate_to_plcp_idx(rx_hdr
->rate
);
483 rate
= iwl3945_rates
[rate
].ieee
/ 2;
485 /* print frame summary.
486 * MAC addresses show just the last byte (for brevity),
487 * but you can hack it to show more, if you'd like to. */
489 IWL_DEBUG_RX(priv
, "%s: mhd=0x%04x, dst=0x%02x, "
490 "len=%u, rssi=%d, chnl=%d, rate=%d, \n",
491 title
, le16_to_cpu(fc
), header
->addr1
[5],
492 length
, rssi
, channel
, rate
);
494 /* src/dst addresses assume managed mode */
495 IWL_DEBUG_RX(priv
, "%s: 0x%04x, dst=0x%02x, "
496 "src=0x%02x, rssi=%u, tim=%lu usec, "
497 "phy=0x%02x, chnl=%d\n",
498 title
, le16_to_cpu(fc
), header
->addr1
[5],
499 header
->addr3
[5], rssi
,
500 tsf_low
- priv
->scan_start_tsf
,
505 iwl_print_hex_dump(priv
, IWL_DL_RX
, data
, length
);
508 static void iwl3945_dbg_report_frame(struct iwl_priv
*priv
,
509 struct iwl_rx_packet
*pkt
,
510 struct ieee80211_hdr
*header
, int group100
)
512 if (priv
->debug_level
& IWL_DL_RX
)
513 _iwl3945_dbg_report_frame(priv
, pkt
, header
, group100
);
517 static inline void iwl3945_dbg_report_frame(struct iwl_priv
*priv
,
518 struct iwl_rx_packet
*pkt
,
519 struct ieee80211_hdr
*header
, int group100
)
524 /* This is necessary only for a number of statistics, see the caller. */
525 static int iwl3945_is_network_packet(struct iwl_priv
*priv
,
526 struct ieee80211_hdr
*header
)
528 /* Filter incoming packets to determine if they are targeted toward
529 * this network, discarding packets coming from ourselves */
530 switch (priv
->iw_mode
) {
531 case NL80211_IFTYPE_ADHOC
: /* Header: Dest. | Source | BSSID */
532 /* packets to our IBSS update information */
533 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
534 case NL80211_IFTYPE_STATION
: /* Header: Dest. | AP{BSSID} | Source */
535 /* packets to our IBSS update information */
536 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
542 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv
*priv
,
543 struct iwl_rx_mem_buffer
*rxb
,
544 struct ieee80211_rx_status
*stats
)
546 struct iwl_rx_packet
*pkt
= (struct iwl_rx_packet
*)rxb
->skb
->data
;
547 #ifdef CONFIG_IWLWIFI_LEDS
548 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)IWL_RX_DATA(pkt
);
550 struct iwl3945_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
551 struct iwl3945_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
552 short len
= le16_to_cpu(rx_hdr
->len
);
554 /* We received data from the HW, so stop the watchdog */
555 if (unlikely((len
+ IWL39_RX_FRAME_SIZE
) > skb_tailroom(rxb
->skb
))) {
556 IWL_DEBUG_DROP(priv
, "Corruption detected!\n");
560 /* We only process data packets if the interface is open */
561 if (unlikely(!priv
->is_open
)) {
562 IWL_DEBUG_DROP_LIMIT(priv
,
563 "Dropping packet while interface is not open.\n");
567 skb_reserve(rxb
->skb
, (void *)rx_hdr
->payload
- (void *)pkt
);
568 /* Set the size of the skb to the size of the frame */
569 skb_put(rxb
->skb
, le16_to_cpu(rx_hdr
->len
));
571 if (!iwl3945_mod_params
.sw_crypto
)
572 iwl_set_decrypted_flag(priv
,
573 (struct ieee80211_hdr
*)rxb
->skb
->data
,
574 le32_to_cpu(rx_end
->status
), stats
);
576 #ifdef CONFIG_IWLWIFI_LEDS
577 if (ieee80211_is_data(hdr
->frame_control
))
578 priv
->rxtxpackets
+= len
;
580 ieee80211_rx_irqsafe(priv
->hw
, rxb
->skb
, stats
);
584 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
586 static void iwl3945_rx_reply_rx(struct iwl_priv
*priv
,
587 struct iwl_rx_mem_buffer
*rxb
)
589 struct ieee80211_hdr
*header
;
590 struct ieee80211_rx_status rx_status
;
591 struct iwl_rx_packet
*pkt
= (void *)rxb
->skb
->data
;
592 struct iwl3945_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
593 struct iwl3945_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
594 struct iwl3945_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
596 u16 rx_stats_sig_avg
= le16_to_cpu(rx_stats
->sig_avg
);
597 u16 rx_stats_noise_diff
= le16_to_cpu(rx_stats
->noise_diff
);
601 rx_status
.mactime
= le64_to_cpu(rx_end
->timestamp
);
603 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr
->channel
));
604 rx_status
.band
= (rx_hdr
->phy_flags
& RX_RES_PHY_FLAGS_BAND_24_MSK
) ?
605 IEEE80211_BAND_2GHZ
: IEEE80211_BAND_5GHZ
;
607 rx_status
.rate_idx
= iwl3945_hwrate_to_plcp_idx(rx_hdr
->rate
);
608 if (rx_status
.band
== IEEE80211_BAND_5GHZ
)
609 rx_status
.rate_idx
-= IWL_FIRST_OFDM_RATE
;
611 rx_status
.antenna
= le16_to_cpu(rx_hdr
->phy_flags
&
612 RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
614 /* set the preamble flag if appropriate */
615 if (rx_hdr
->phy_flags
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
616 rx_status
.flag
|= RX_FLAG_SHORTPRE
;
618 if ((unlikely(rx_stats
->phy_count
> 20))) {
619 IWL_DEBUG_DROP(priv
, "dsp size out of range [0,20]: %d/n",
620 rx_stats
->phy_count
);
624 if (!(rx_end
->status
& RX_RES_STATUS_NO_CRC32_ERROR
)
625 || !(rx_end
->status
& RX_RES_STATUS_NO_RXE_OVERFLOW
)) {
626 IWL_DEBUG_RX(priv
, "Bad CRC or FIFO: 0x%08X.\n", rx_end
->status
);
632 /* Convert 3945's rssi indicator to dBm */
633 rx_status
.signal
= rx_stats
->rssi
- IWL39_RSSI_OFFSET
;
635 /* Set default noise value to -127 */
636 if (priv
->last_rx_noise
== 0)
637 priv
->last_rx_noise
= IWL_NOISE_MEAS_NOT_AVAILABLE
;
639 /* 3945 provides noise info for OFDM frames only.
640 * sig_avg and noise_diff are measured by the 3945's digital signal
641 * processor (DSP), and indicate linear levels of signal level and
642 * distortion/noise within the packet preamble after
643 * automatic gain control (AGC). sig_avg should stay fairly
644 * constant if the radio's AGC is working well.
645 * Since these values are linear (not dB or dBm), linear
646 * signal-to-noise ratio (SNR) is (sig_avg / noise_diff).
647 * Convert linear SNR to dB SNR, then subtract that from rssi dBm
648 * to obtain noise level in dBm.
649 * Calculate rx_status.signal (quality indicator in %) based on SNR. */
650 if (rx_stats_noise_diff
) {
651 snr
= rx_stats_sig_avg
/ rx_stats_noise_diff
;
652 rx_status
.noise
= rx_status
.signal
-
653 iwl3945_calc_db_from_ratio(snr
);
654 rx_status
.qual
= iwl3945_calc_sig_qual(rx_status
.signal
,
657 /* If noise info not available, calculate signal quality indicator (%)
658 * using just the dBm signal level. */
660 rx_status
.noise
= priv
->last_rx_noise
;
661 rx_status
.qual
= iwl3945_calc_sig_qual(rx_status
.signal
, 0);
665 IWL_DEBUG_STATS(priv
, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
666 rx_status
.signal
, rx_status
.noise
, rx_status
.qual
,
667 rx_stats_sig_avg
, rx_stats_noise_diff
);
669 header
= (struct ieee80211_hdr
*)IWL_RX_DATA(pkt
);
671 network_packet
= iwl3945_is_network_packet(priv
, header
);
673 IWL_DEBUG_STATS_LIMIT(priv
, "[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n",
674 network_packet
? '*' : ' ',
675 le16_to_cpu(rx_hdr
->channel
),
676 rx_status
.signal
, rx_status
.signal
,
677 rx_status
.noise
, rx_status
.rate_idx
);
679 /* Set "1" to report good data frames in groups of 100 */
680 iwl3945_dbg_report_frame(priv
, pkt
, header
, 1);
682 if (network_packet
) {
683 priv
->last_beacon_time
= le32_to_cpu(rx_end
->beacon_timestamp
);
684 priv
->last_tsf
= le64_to_cpu(rx_end
->timestamp
);
685 priv
->last_rx_rssi
= rx_status
.signal
;
686 priv
->last_rx_noise
= rx_status
.noise
;
689 iwl3945_pass_packet_to_mac80211(priv
, rxb
, &rx_status
);
692 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
693 struct iwl_tx_queue
*txq
,
694 dma_addr_t addr
, u16 len
, u8 reset
, u8 pad
)
698 struct iwl3945_tfd
*tfd
, *tfd_tmp
;
701 tfd_tmp
= (struct iwl3945_tfd
*)txq
->tfds
;
702 tfd
= &tfd_tmp
[q
->write_ptr
];
705 memset(tfd
, 0, sizeof(*tfd
));
707 count
= TFD_CTL_COUNT_GET(le32_to_cpu(tfd
->control_flags
));
709 if ((count
>= NUM_TFD_CHUNKS
) || (count
< 0)) {
710 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
715 tfd
->tbs
[count
].addr
= cpu_to_le32(addr
);
716 tfd
->tbs
[count
].len
= cpu_to_le32(len
);
720 tfd
->control_flags
= cpu_to_le32(TFD_CTL_COUNT_SET(count
) |
721 TFD_CTL_PAD_SET(pad
));
727 * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
729 * Does NOT advance any indexes
731 void iwl3945_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
733 struct iwl3945_tfd
*tfd_tmp
= (struct iwl3945_tfd
*)txq
->tfds
;
734 int index
= txq
->q
.read_ptr
;
735 struct iwl3945_tfd
*tfd
= &tfd_tmp
[index
];
736 struct pci_dev
*dev
= priv
->pci_dev
;
741 counter
= TFD_CTL_COUNT_GET(le32_to_cpu(tfd
->control_flags
));
742 if (counter
> NUM_TFD_CHUNKS
) {
743 IWL_ERR(priv
, "Too many chunks: %i\n", counter
);
744 /* @todo issue fatal error, it is quite serious situation */
750 pci_unmap_single(dev
,
751 pci_unmap_addr(&txq
->cmd
[index
]->meta
, mapping
),
752 pci_unmap_len(&txq
->cmd
[index
]->meta
, len
),
755 /* unmap chunks if any */
757 for (i
= 1; i
< counter
; i
++) {
758 pci_unmap_single(dev
, le32_to_cpu(tfd
->tbs
[i
].addr
),
759 le32_to_cpu(tfd
->tbs
[i
].len
), PCI_DMA_TODEVICE
);
760 if (txq
->txb
[txq
->q
.read_ptr
].skb
[0]) {
761 struct sk_buff
*skb
= txq
->txb
[txq
->q
.read_ptr
].skb
[0];
762 if (txq
->txb
[txq
->q
.read_ptr
].skb
[0]) {
763 /* Can be called from interrupt context */
764 dev_kfree_skb_any(skb
);
765 txq
->txb
[txq
->q
.read_ptr
].skb
[0] = NULL
;
773 * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
776 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv
*priv
, struct iwl_cmd
*cmd
,
777 struct ieee80211_tx_info
*info
,
778 struct ieee80211_hdr
*hdr
, int sta_id
, int tx_id
)
780 u16 hw_value
= ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
;
781 u16 rate_index
= min(hw_value
& 0xffff, IWL_RATE_COUNT
- 1);
787 __le16 fc
= hdr
->frame_control
;
788 struct iwl3945_tx_cmd
*tx
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
790 rate
= iwl3945_rates
[rate_index
].plcp
;
791 tx_flags
= tx
->tx_flags
;
793 /* We need to figure out how to get the sta->supp_rates while
794 * in this running context */
795 rate_mask
= IWL_RATES_MASK
;
797 if (tx_id
>= IWL_CMD_QUEUE_NUM
)
802 if (ieee80211_is_probe_resp(fc
)) {
803 data_retry_limit
= 3;
804 if (data_retry_limit
< rts_retry_limit
)
805 rts_retry_limit
= data_retry_limit
;
807 data_retry_limit
= IWL_DEFAULT_TX_RETRY
;
809 if (priv
->data_retry_limit
!= -1)
810 data_retry_limit
= priv
->data_retry_limit
;
812 if (ieee80211_is_mgmt(fc
)) {
813 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
814 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
815 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
816 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
817 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
818 if (tx_flags
& TX_CMD_FLG_RTS_MSK
) {
819 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
820 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
828 tx
->rts_retry_limit
= rts_retry_limit
;
829 tx
->data_retry_limit
= data_retry_limit
;
831 tx
->tx_flags
= tx_flags
;
835 ((rate_mask
& IWL_OFDM_RATES_MASK
) >> IWL_FIRST_OFDM_RATE
) & 0xFF;
838 tx
->supp_rates
[1] = (rate_mask
& 0xF);
840 IWL_DEBUG_RATE(priv
, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
841 "cck/ofdm mask: 0x%x/0x%x\n", sta_id
,
842 tx
->rate
, le32_to_cpu(tx
->tx_flags
),
843 tx
->supp_rates
[1], tx
->supp_rates
[0]);
846 u8
iwl3945_sync_sta(struct iwl_priv
*priv
, int sta_id
, u16 tx_rate
, u8 flags
)
848 unsigned long flags_spin
;
849 struct iwl_station_entry
*station
;
851 if (sta_id
== IWL_INVALID_STATION
)
852 return IWL_INVALID_STATION
;
854 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
855 station
= &priv
->stations
[sta_id
];
857 station
->sta
.sta
.modify_mask
= STA_MODIFY_TX_RATE_MSK
;
858 station
->sta
.rate_n_flags
= cpu_to_le16(tx_rate
);
859 station
->sta
.mode
= STA_CONTROL_MODIFY_MSK
;
861 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
863 iwl_send_add_sta(priv
, &station
->sta
, flags
);
864 IWL_DEBUG_RATE(priv
, "SCALE sync station %d to rate %d\n",
869 static int iwl3945_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
871 if (src
== IWL_PWR_SRC_VAUX
) {
872 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
)) {
873 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
874 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
875 ~APMG_PS_CTRL_MSK_PWR_SRC
);
877 iwl_poll_bit(priv
, CSR_GPIO_IN
,
878 CSR_GPIO_IN_VAL_VAUX_PWR_SRC
,
879 CSR_GPIO_IN_BIT_AUX_POWER
, 5000);
882 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
883 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
884 ~APMG_PS_CTRL_MSK_PWR_SRC
);
886 iwl_poll_bit(priv
, CSR_GPIO_IN
, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC
,
887 CSR_GPIO_IN_BIT_AUX_POWER
, 5000); /* uS */
893 static int iwl3945_rx_init(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
895 iwl_write_direct32(priv
, FH39_RCSR_RBD_BASE(0), rxq
->dma_addr
);
896 iwl_write_direct32(priv
, FH39_RCSR_RPTR_ADDR(0), rxq
->rb_stts_dma
);
897 iwl_write_direct32(priv
, FH39_RCSR_WPTR(0), 0);
898 iwl_write_direct32(priv
, FH39_RCSR_CONFIG(0),
899 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE
|
900 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE
|
901 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN
|
902 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128
|
903 (RX_QUEUE_SIZE_LOG
<< FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE
) |
904 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST
|
905 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH
) |
906 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH
);
908 /* fake read to flush all prev I/O */
909 iwl_read_direct32(priv
, FH39_RSSR_CTRL
);
914 static int iwl3945_tx_reset(struct iwl_priv
*priv
)
918 iwl_write_prph(priv
, ALM_SCD_MODE_REG
, 0x2);
921 iwl_write_prph(priv
, ALM_SCD_ARASTAT_REG
, 0x01);
923 /* all 6 fifo are active */
924 iwl_write_prph(priv
, ALM_SCD_TXFACT_REG
, 0x3f);
926 iwl_write_prph(priv
, ALM_SCD_SBYP_MODE_1_REG
, 0x010000);
927 iwl_write_prph(priv
, ALM_SCD_SBYP_MODE_2_REG
, 0x030002);
928 iwl_write_prph(priv
, ALM_SCD_TXF4MF_REG
, 0x000004);
929 iwl_write_prph(priv
, ALM_SCD_TXF5MF_REG
, 0x000005);
931 iwl_write_direct32(priv
, FH39_TSSR_CBB_BASE
,
934 iwl_write_direct32(priv
, FH39_TSSR_MSG_CONFIG
,
935 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON
|
936 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON
|
937 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B
|
938 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON
|
939 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON
|
940 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH
|
941 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH
);
948 * iwl3945_txq_ctx_reset - Reset TX queue context
950 * Destroys all DMA structures and initialize them again
952 static int iwl3945_txq_ctx_reset(struct iwl_priv
*priv
)
955 int txq_id
, slots_num
;
957 iwl3945_hw_txq_ctx_free(priv
);
960 rc
= iwl3945_tx_reset(priv
);
965 for (txq_id
= 0; txq_id
<= priv
->hw_params
.max_txq_num
; txq_id
++) {
966 slots_num
= (txq_id
== IWL_CMD_QUEUE_NUM
) ?
967 TFD_CMD_SLOTS
: TFD_TX_CMD_SLOTS
;
968 rc
= iwl_tx_queue_init(priv
, &priv
->txq
[txq_id
], slots_num
,
971 IWL_ERR(priv
, "Tx %d queue init failed\n", txq_id
);
979 iwl3945_hw_txq_ctx_free(priv
);
983 static int iwl3945_apm_init(struct iwl_priv
*priv
)
987 iwl_power_initialize(priv
);
989 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
990 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER
);
992 /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */
993 iwl_set_bit(priv
, CSR_GIO_CHICKEN_BITS
,
994 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX
);
996 /* set "initialization complete" bit to move adapter
997 * D0U* --> D0A* state */
998 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1000 ret
= iwl_poll_direct_bit(priv
, CSR_GP_CNTRL
,
1001 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
1003 IWL_DEBUG_INFO(priv
, "Failed to init the card\n");
1008 iwl_write_prph(priv
, APMG_CLK_CTRL_REG
, APMG_CLK_VAL_DMA_CLK_RQT
|
1009 APMG_CLK_VAL_BSM_CLK_RQT
);
1013 /* disable L1-Active */
1014 iwl_set_bits_prph(priv
, APMG_PCIDEV_STT_REG
,
1015 APMG_PCIDEV_STT_VAL_L1_ACT_DIS
);
1021 static void iwl3945_nic_config(struct iwl_priv
*priv
)
1023 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1024 unsigned long flags
;
1027 spin_lock_irqsave(&priv
->lock
, flags
);
1029 /* Determine HW type */
1030 pci_read_config_byte(priv
->pci_dev
, PCI_REVISION_ID
, &rev_id
);
1032 IWL_DEBUG_INFO(priv
, "HW Revision ID = 0x%X\n", rev_id
);
1034 if (rev_id
& PCI_CFG_REV_ID_BIT_RTP
)
1035 IWL_DEBUG_INFO(priv
, "RTP type \n");
1036 else if (rev_id
& PCI_CFG_REV_ID_BIT_BASIC_SKU
) {
1037 IWL_DEBUG_INFO(priv
, "3945 RADIO-MB type\n");
1038 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1039 CSR39_HW_IF_CONFIG_REG_BIT_3945_MB
);
1041 IWL_DEBUG_INFO(priv
, "3945 RADIO-MM type\n");
1042 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1043 CSR39_HW_IF_CONFIG_REG_BIT_3945_MM
);
1046 if (EEPROM_SKU_CAP_OP_MODE_MRC
== eeprom
->sku_cap
) {
1047 IWL_DEBUG_INFO(priv
, "SKU OP mode is mrc\n");
1048 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1049 CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC
);
1051 IWL_DEBUG_INFO(priv
, "SKU OP mode is basic\n");
1053 if ((eeprom
->board_revision
& 0xF0) == 0xD0) {
1054 IWL_DEBUG_INFO(priv
, "3945ABG revision is 0x%X\n",
1055 eeprom
->board_revision
);
1056 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1057 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE
);
1059 IWL_DEBUG_INFO(priv
, "3945ABG revision is 0x%X\n",
1060 eeprom
->board_revision
);
1061 iwl_clear_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1062 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE
);
1065 if (eeprom
->almgor_m_version
<= 1) {
1066 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1067 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A
);
1068 IWL_DEBUG_INFO(priv
, "Card M type A version is 0x%X\n",
1069 eeprom
->almgor_m_version
);
1071 IWL_DEBUG_INFO(priv
, "Card M type B version is 0x%X\n",
1072 eeprom
->almgor_m_version
);
1073 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1074 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B
);
1076 spin_unlock_irqrestore(&priv
->lock
, flags
);
1078 if (eeprom
->sku_cap
& EEPROM_SKU_CAP_SW_RF_KILL_ENABLE
)
1079 IWL_DEBUG_RF_KILL(priv
, "SW RF KILL supported in EEPROM.\n");
1081 if (eeprom
->sku_cap
& EEPROM_SKU_CAP_HW_RF_KILL_ENABLE
)
1082 IWL_DEBUG_RF_KILL(priv
, "HW RF KILL supported in EEPROM.\n");
1085 int iwl3945_hw_nic_init(struct iwl_priv
*priv
)
1088 unsigned long flags
;
1089 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1091 spin_lock_irqsave(&priv
->lock
, flags
);
1092 priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
1093 spin_unlock_irqrestore(&priv
->lock
, flags
);
1095 rc
= priv
->cfg
->ops
->lib
->apm_ops
.set_pwr_src(priv
, IWL_PWR_SRC_VMAIN
);
1099 priv
->cfg
->ops
->lib
->apm_ops
.config(priv
);
1101 /* Allocate the RX queue, or reset if it is already allocated */
1103 rc
= iwl_rx_queue_alloc(priv
);
1105 IWL_ERR(priv
, "Unable to initialize Rx queue\n");
1109 iwl3945_rx_queue_reset(priv
, rxq
);
1111 iwl3945_rx_replenish(priv
);
1113 iwl3945_rx_init(priv
, rxq
);
1116 /* Look at using this instead:
1117 rxq->need_update = 1;
1118 iwl_rx_queue_update_write_ptr(priv, rxq);
1121 iwl_write_direct32(priv
, FH39_RCSR_WPTR(0), rxq
->write
& ~7);
1123 rc
= iwl3945_txq_ctx_reset(priv
);
1127 set_bit(STATUS_INIT
, &priv
->status
);
1133 * iwl3945_hw_txq_ctx_free - Free TXQ Context
1135 * Destroy all TX DMA queues and structures
1137 void iwl3945_hw_txq_ctx_free(struct iwl_priv
*priv
)
1142 for (txq_id
= 0; txq_id
<= priv
->hw_params
.max_txq_num
; txq_id
++)
1143 if (txq_id
== IWL_CMD_QUEUE_NUM
)
1144 iwl_cmd_queue_free(priv
);
1146 iwl_tx_queue_free(priv
, txq_id
);
1150 void iwl3945_hw_txq_ctx_stop(struct iwl_priv
*priv
)
1155 iwl_write_prph(priv
, ALM_SCD_MODE_REG
, 0);
1157 /* reset TFD queues */
1158 for (txq_id
= 0; txq_id
<= priv
->hw_params
.max_txq_num
; txq_id
++) {
1159 iwl_write_direct32(priv
, FH39_TCSR_CONFIG(txq_id
), 0x0);
1160 iwl_poll_direct_bit(priv
, FH39_TSSR_TX_STATUS
,
1161 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id
),
1165 iwl3945_hw_txq_ctx_free(priv
);
1168 static int iwl3945_apm_stop_master(struct iwl_priv
*priv
)
1171 unsigned long flags
;
1173 spin_lock_irqsave(&priv
->lock
, flags
);
1175 /* set stop master bit */
1176 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_STOP_MASTER
);
1178 iwl_poll_direct_bit(priv
, CSR_RESET
,
1179 CSR_RESET_REG_FLAG_MASTER_DISABLED
, 100);
1185 spin_unlock_irqrestore(&priv
->lock
, flags
);
1186 IWL_DEBUG_INFO(priv
, "stop master\n");
1191 static void iwl3945_apm_stop(struct iwl_priv
*priv
)
1193 unsigned long flags
;
1195 iwl3945_apm_stop_master(priv
);
1197 spin_lock_irqsave(&priv
->lock
, flags
);
1199 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
1202 /* clear "init complete" move adapter D0A* --> D0U state */
1203 iwl_clear_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1204 spin_unlock_irqrestore(&priv
->lock
, flags
);
1207 static int iwl3945_apm_reset(struct iwl_priv
*priv
)
1209 iwl3945_apm_stop_master(priv
);
1212 iwl_set_bit(priv
, CSR_RESET
, CSR_RESET_REG_FLAG_SW_RESET
);
1215 iwl_set_bit(priv
, CSR_GP_CNTRL
, CSR_GP_CNTRL_REG_FLAG_INIT_DONE
);
1217 iwl_poll_direct_bit(priv
, CSR_GP_CNTRL
,
1218 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY
, 25000);
1220 iwl_write_prph(priv
, APMG_CLK_CTRL_REG
,
1221 APMG_CLK_VAL_BSM_CLK_RQT
);
1223 iwl_write_prph(priv
, APMG_RTC_INT_MSK_REG
, 0x0);
1224 iwl_write_prph(priv
, APMG_RTC_INT_STT_REG
,
1228 iwl_write_prph(priv
, APMG_CLK_EN_REG
,
1229 APMG_CLK_VAL_DMA_CLK_RQT
|
1230 APMG_CLK_VAL_BSM_CLK_RQT
);
1233 iwl_set_bits_prph(priv
, APMG_PS_CTRL_REG
,
1234 APMG_PS_CTRL_VAL_RESET_REQ
);
1236 iwl_clear_bits_prph(priv
, APMG_PS_CTRL_REG
,
1237 APMG_PS_CTRL_VAL_RESET_REQ
);
1239 /* Clear the 'host command active' bit... */
1240 clear_bit(STATUS_HCMD_ACTIVE
, &priv
->status
);
1242 wake_up_interruptible(&priv
->wait_command_queue
);
1248 * iwl3945_hw_reg_adjust_power_by_temp
1249 * return index delta into power gain settings table
1251 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading
, int old_reading
)
1253 return (new_reading
- old_reading
) * (-11) / 100;
1257 * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1259 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature
)
1261 return ((temperature
< -260) || (temperature
> 25)) ? 1 : 0;
1264 int iwl3945_hw_get_temperature(struct iwl_priv
*priv
)
1266 return iwl_read32(priv
, CSR_UCODE_DRV_GP2
);
1270 * iwl3945_hw_reg_txpower_get_temperature
1271 * get the current temperature by reading from NIC
1273 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv
*priv
)
1275 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1278 temperature
= iwl3945_hw_get_temperature(priv
);
1280 /* driver's okay range is -260 to +25.
1281 * human readable okay range is 0 to +285 */
1282 IWL_DEBUG_INFO(priv
, "Temperature: %d\n", temperature
+ IWL_TEMP_CONVERT
);
1284 /* handle insane temp reading */
1285 if (iwl3945_hw_reg_temp_out_of_range(temperature
)) {
1286 IWL_ERR(priv
, "Error bad temperature value %d\n", temperature
);
1288 /* if really really hot(?),
1289 * substitute the 3rd band/group's temp measured at factory */
1290 if (priv
->last_temperature
> 100)
1291 temperature
= eeprom
->groups
[2].temperature
;
1292 else /* else use most recent "sane" value from driver */
1293 temperature
= priv
->last_temperature
;
1296 return temperature
; /* raw, not "human readable" */
1299 /* Adjust Txpower only if temperature variance is greater than threshold.
1301 * Both are lower than older versions' 9 degrees */
1302 #define IWL_TEMPERATURE_LIMIT_TIMER 6
1305 * is_temp_calib_needed - determines if new calibration is needed
1307 * records new temperature in tx_mgr->temperature.
1308 * replaces tx_mgr->last_temperature *only* if calib needed
1309 * (assumes caller will actually do the calibration!). */
1310 static int is_temp_calib_needed(struct iwl_priv
*priv
)
1314 priv
->temperature
= iwl3945_hw_reg_txpower_get_temperature(priv
);
1315 temp_diff
= priv
->temperature
- priv
->last_temperature
;
1317 /* get absolute value */
1318 if (temp_diff
< 0) {
1319 IWL_DEBUG_POWER(priv
, "Getting cooler, delta %d,\n", temp_diff
);
1320 temp_diff
= -temp_diff
;
1321 } else if (temp_diff
== 0)
1322 IWL_DEBUG_POWER(priv
, "Same temp,\n");
1324 IWL_DEBUG_POWER(priv
, "Getting warmer, delta %d,\n", temp_diff
);
1326 /* if we don't need calibration, *don't* update last_temperature */
1327 if (temp_diff
< IWL_TEMPERATURE_LIMIT_TIMER
) {
1328 IWL_DEBUG_POWER(priv
, "Timed thermal calib not needed\n");
1332 IWL_DEBUG_POWER(priv
, "Timed thermal calib needed\n");
1334 /* assume that caller will actually do calib ...
1335 * update the "last temperature" value */
1336 priv
->last_temperature
= priv
->temperature
;
1340 #define IWL_MAX_GAIN_ENTRIES 78
1341 #define IWL_CCK_FROM_OFDM_POWER_DIFF -5
1342 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1344 /* radio and DSP power table, each step is 1/2 dB.
1345 * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1346 static struct iwl3945_tx_power power_gain_table
[2][IWL_MAX_GAIN_ENTRIES
] = {
1348 {251, 127}, /* 2.4 GHz, highest power */
1425 {3, 95} }, /* 2.4 GHz, lowest power */
1427 {251, 127}, /* 5.x GHz, highest power */
1504 {3, 120} } /* 5.x GHz, lowest power */
1507 static inline u8
iwl3945_hw_reg_fix_power_index(int index
)
1511 if (index
>= IWL_MAX_GAIN_ENTRIES
)
1512 return IWL_MAX_GAIN_ENTRIES
- 1;
1516 /* Kick off thermal recalibration check every 60 seconds */
1517 #define REG_RECALIB_PERIOD (60)
1520 * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1522 * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1523 * or 6 Mbit (OFDM) rates.
1525 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv
*priv
, u32 scan_tbl_index
,
1526 s32 rate_index
, const s8
*clip_pwrs
,
1527 struct iwl_channel_info
*ch_info
,
1530 struct iwl3945_scan_power_info
*scan_power_info
;
1534 scan_power_info
= &ch_info
->scan_pwr_info
[scan_tbl_index
];
1536 /* use this channel group's 6Mbit clipping/saturation pwr,
1537 * but cap at regulatory scan power restriction (set during init
1538 * based on eeprom channel data) for this channel. */
1539 power
= min(ch_info
->scan_power
, clip_pwrs
[IWL_RATE_6M_INDEX_TABLE
]);
1541 /* further limit to user's max power preference.
1542 * FIXME: Other spectrum management power limitations do not
1543 * seem to apply?? */
1544 power
= min(power
, priv
->tx_power_user_lmt
);
1545 scan_power_info
->requested_power
= power
;
1547 /* find difference between new scan *power* and current "normal"
1548 * Tx *power* for 6Mb. Use this difference (x2) to adjust the
1549 * current "normal" temperature-compensated Tx power *index* for
1550 * this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1552 power_index
= ch_info
->power_info
[rate_index
].power_table_index
1553 - (power
- ch_info
->power_info
1554 [IWL_RATE_6M_INDEX_TABLE
].requested_power
) * 2;
1556 /* store reference index that we use when adjusting *all* scan
1557 * powers. So we can accommodate user (all channel) or spectrum
1558 * management (single channel) power changes "between" temperature
1559 * feedback compensation procedures.
1560 * don't force fit this reference index into gain table; it may be a
1561 * negative number. This will help avoid errors when we're at
1562 * the lower bounds (highest gains, for warmest temperatures)
1565 /* don't exceed table bounds for "real" setting */
1566 power_index
= iwl3945_hw_reg_fix_power_index(power_index
);
1568 scan_power_info
->power_table_index
= power_index
;
1569 scan_power_info
->tpc
.tx_gain
=
1570 power_gain_table
[band_index
][power_index
].tx_gain
;
1571 scan_power_info
->tpc
.dsp_atten
=
1572 power_gain_table
[band_index
][power_index
].dsp_atten
;
1576 * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1578 * Configures power settings for all rates for the current channel,
1579 * using values from channel info struct, and send to NIC
1581 static int iwl3945_send_tx_power(struct iwl_priv
*priv
)
1584 const struct iwl_channel_info
*ch_info
= NULL
;
1585 struct iwl3945_txpowertable_cmd txpower
= {
1586 .channel
= priv
->active_rxon
.channel
,
1589 txpower
.band
= (priv
->band
== IEEE80211_BAND_5GHZ
) ? 0 : 1;
1590 ch_info
= iwl_get_channel_info(priv
,
1592 le16_to_cpu(priv
->active_rxon
.channel
));
1595 "Failed to get channel info for channel %d [%d]\n",
1596 le16_to_cpu(priv
->active_rxon
.channel
), priv
->band
);
1600 if (!is_channel_valid(ch_info
)) {
1601 IWL_DEBUG_POWER(priv
, "Not calling TX_PWR_TABLE_CMD on "
1602 "non-Tx channel.\n");
1606 /* fill cmd with power settings for all rates for current channel */
1607 /* Fill OFDM rate */
1608 for (rate_idx
= IWL_FIRST_OFDM_RATE
, i
= 0;
1609 rate_idx
<= IWL39_LAST_OFDM_RATE
; rate_idx
++, i
++) {
1611 txpower
.power
[i
].tpc
= ch_info
->power_info
[i
].tpc
;
1612 txpower
.power
[i
].rate
= iwl3945_rates
[rate_idx
].plcp
;
1614 IWL_DEBUG_POWER(priv
, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1615 le16_to_cpu(txpower
.channel
),
1617 txpower
.power
[i
].tpc
.tx_gain
,
1618 txpower
.power
[i
].tpc
.dsp_atten
,
1619 txpower
.power
[i
].rate
);
1621 /* Fill CCK rates */
1622 for (rate_idx
= IWL_FIRST_CCK_RATE
;
1623 rate_idx
<= IWL_LAST_CCK_RATE
; rate_idx
++, i
++) {
1624 txpower
.power
[i
].tpc
= ch_info
->power_info
[i
].tpc
;
1625 txpower
.power
[i
].rate
= iwl3945_rates
[rate_idx
].plcp
;
1627 IWL_DEBUG_POWER(priv
, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1628 le16_to_cpu(txpower
.channel
),
1630 txpower
.power
[i
].tpc
.tx_gain
,
1631 txpower
.power
[i
].tpc
.dsp_atten
,
1632 txpower
.power
[i
].rate
);
1635 return iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
,
1636 sizeof(struct iwl3945_txpowertable_cmd
),
1642 * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1643 * @ch_info: Channel to update. Uses power_info.requested_power.
1645 * Replace requested_power and base_power_index ch_info fields for
1648 * Called if user or spectrum management changes power preferences.
1649 * Takes into account h/w and modulation limitations (clip power).
1651 * This does *not* send anything to NIC, just sets up ch_info for one channel.
1653 * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1654 * properly fill out the scan powers, and actual h/w gain settings,
1655 * and send changes to NIC
1657 static int iwl3945_hw_reg_set_new_power(struct iwl_priv
*priv
,
1658 struct iwl_channel_info
*ch_info
)
1660 struct iwl3945_channel_power_info
*power_info
;
1661 int power_changed
= 0;
1663 const s8
*clip_pwrs
;
1666 /* Get this chnlgrp's rate-to-max/clip-powers table */
1667 clip_pwrs
= priv
->clip39_groups
[ch_info
->group_index
].clip_powers
;
1669 /* Get this channel's rate-to-current-power settings table */
1670 power_info
= ch_info
->power_info
;
1672 /* update OFDM Txpower settings */
1673 for (i
= IWL_RATE_6M_INDEX_TABLE
; i
<= IWL_RATE_54M_INDEX_TABLE
;
1674 i
++, ++power_info
) {
1677 /* limit new power to be no more than h/w capability */
1678 power
= min(ch_info
->curr_txpow
, clip_pwrs
[i
]);
1679 if (power
== power_info
->requested_power
)
1682 /* find difference between old and new requested powers,
1683 * update base (non-temp-compensated) power index */
1684 delta_idx
= (power
- power_info
->requested_power
) * 2;
1685 power_info
->base_power_index
-= delta_idx
;
1687 /* save new requested power value */
1688 power_info
->requested_power
= power
;
1693 /* update CCK Txpower settings, based on OFDM 12M setting ...
1694 * ... all CCK power settings for a given channel are the *same*. */
1695 if (power_changed
) {
1697 ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
].
1698 requested_power
+ IWL_CCK_FROM_OFDM_POWER_DIFF
;
1700 /* do all CCK rates' iwl3945_channel_power_info structures */
1701 for (i
= IWL_RATE_1M_INDEX_TABLE
; i
<= IWL_RATE_11M_INDEX_TABLE
; i
++) {
1702 power_info
->requested_power
= power
;
1703 power_info
->base_power_index
=
1704 ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
].
1705 base_power_index
+ IWL_CCK_FROM_OFDM_INDEX_DIFF
;
1714 * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1716 * NOTE: Returned power limit may be less (but not more) than requested,
1717 * based strictly on regulatory (eeprom and spectrum mgt) limitations
1718 * (no consideration for h/w clipping limitations).
1720 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info
*ch_info
)
1725 /* if we're using TGd limits, use lower of TGd or EEPROM */
1726 if (ch_info
->tgd_data
.max_power
!= 0)
1727 max_power
= min(ch_info
->tgd_data
.max_power
,
1728 ch_info
->eeprom
.max_power_avg
);
1730 /* else just use EEPROM limits */
1733 max_power
= ch_info
->eeprom
.max_power_avg
;
1735 return min(max_power
, ch_info
->max_power_avg
);
1739 * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1741 * Compensate txpower settings of *all* channels for temperature.
1742 * This only accounts for the difference between current temperature
1743 * and the factory calibration temperatures, and bases the new settings
1744 * on the channel's base_power_index.
1746 * If RxOn is "associated", this sends the new Txpower to NIC!
1748 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv
*priv
)
1750 struct iwl_channel_info
*ch_info
= NULL
;
1751 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1753 const s8
*clip_pwrs
; /* array of h/w max power levels for each rate */
1759 int temperature
= priv
->temperature
;
1761 /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1762 for (i
= 0; i
< priv
->channel_count
; i
++) {
1763 ch_info
= &priv
->channel_info
[i
];
1764 a_band
= is_channel_a_band(ch_info
);
1766 /* Get this chnlgrp's factory calibration temperature */
1767 ref_temp
= (s16
)eeprom
->groups
[ch_info
->group_index
].
1770 /* get power index adjustment based on current and factory
1772 delta_index
= iwl3945_hw_reg_adjust_power_by_temp(temperature
,
1775 /* set tx power value for all rates, OFDM and CCK */
1776 for (rate_index
= 0; rate_index
< IWL_RATE_COUNT
;
1779 ch_info
->power_info
[rate_index
].base_power_index
;
1781 /* temperature compensate */
1782 power_idx
+= delta_index
;
1784 /* stay within table range */
1785 power_idx
= iwl3945_hw_reg_fix_power_index(power_idx
);
1786 ch_info
->power_info
[rate_index
].
1787 power_table_index
= (u8
) power_idx
;
1788 ch_info
->power_info
[rate_index
].tpc
=
1789 power_gain_table
[a_band
][power_idx
];
1792 /* Get this chnlgrp's rate-to-max/clip-powers table */
1793 clip_pwrs
= priv
->clip39_groups
[ch_info
->group_index
].clip_powers
;
1795 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1796 for (scan_tbl_index
= 0;
1797 scan_tbl_index
< IWL_NUM_SCAN_RATES
; scan_tbl_index
++) {
1798 s32 actual_index
= (scan_tbl_index
== 0) ?
1799 IWL_RATE_1M_INDEX_TABLE
: IWL_RATE_6M_INDEX_TABLE
;
1800 iwl3945_hw_reg_set_scan_power(priv
, scan_tbl_index
,
1801 actual_index
, clip_pwrs
,
1806 /* send Txpower command for current channel to ucode */
1807 return priv
->cfg
->ops
->lib
->send_tx_power(priv
);
1810 int iwl3945_hw_reg_set_txpower(struct iwl_priv
*priv
, s8 power
)
1812 struct iwl_channel_info
*ch_info
;
1817 if (priv
->tx_power_user_lmt
== power
) {
1818 IWL_DEBUG_POWER(priv
, "Requested Tx power same as current "
1819 "limit: %ddBm.\n", power
);
1823 IWL_DEBUG_POWER(priv
, "Setting upper limit clamp to %ddBm.\n", power
);
1824 priv
->tx_power_user_lmt
= power
;
1826 /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1828 for (i
= 0; i
< priv
->channel_count
; i
++) {
1829 ch_info
= &priv
->channel_info
[i
];
1830 a_band
= is_channel_a_band(ch_info
);
1832 /* find minimum power of all user and regulatory constraints
1833 * (does not consider h/w clipping limitations) */
1834 max_power
= iwl3945_hw_reg_get_ch_txpower_limit(ch_info
);
1835 max_power
= min(power
, max_power
);
1836 if (max_power
!= ch_info
->curr_txpow
) {
1837 ch_info
->curr_txpow
= max_power
;
1839 /* this considers the h/w clipping limitations */
1840 iwl3945_hw_reg_set_new_power(priv
, ch_info
);
1844 /* update txpower settings for all channels,
1845 * send to NIC if associated. */
1846 is_temp_calib_needed(priv
);
1847 iwl3945_hw_reg_comp_txpower_temp(priv
);
1852 static int iwl3945_send_rxon_assoc(struct iwl_priv
*priv
)
1855 struct iwl_rx_packet
*res
= NULL
;
1856 struct iwl3945_rxon_assoc_cmd rxon_assoc
;
1857 struct iwl_host_cmd cmd
= {
1858 .id
= REPLY_RXON_ASSOC
,
1859 .len
= sizeof(rxon_assoc
),
1860 .meta
.flags
= CMD_WANT_SKB
,
1861 .data
= &rxon_assoc
,
1863 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1864 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1866 if ((rxon1
->flags
== rxon2
->flags
) &&
1867 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1868 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1869 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1870 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
1874 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1875 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1876 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1877 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1878 rxon_assoc
.reserved
= 0;
1880 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1884 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
1885 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1886 IWL_ERR(priv
, "Bad return from REPLY_RXON_ASSOC command\n");
1890 priv
->alloc_rxb_skb
--;
1891 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
1897 * iwl3945_commit_rxon - commit staging_rxon to hardware
1899 * The RXON command in staging_rxon is committed to the hardware and
1900 * the active_rxon structure is updated with the new data. This
1901 * function correctly transitions out of the RXON_ASSOC_MSK state if
1902 * a HW tune is required based on the RXON structure changes.
1904 static int iwl3945_commit_rxon(struct iwl_priv
*priv
)
1906 /* cast away the const for active_rxon in this function */
1907 struct iwl3945_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1908 struct iwl3945_rxon_cmd
*staging_rxon
= (void *)&priv
->staging_rxon
;
1911 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
1913 if (!iwl_is_alive(priv
))
1916 /* always get timestamp with Rx frame */
1917 staging_rxon
->flags
|= RXON_FLG_TSF2HOST_MSK
;
1919 /* select antenna */
1920 staging_rxon
->flags
&=
1921 ~(RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_SEL_MSK
);
1922 staging_rxon
->flags
|= iwl3945_get_antenna_flags(priv
);
1924 rc
= iwl_check_rxon_cmd(priv
);
1926 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
1930 /* If we don't need to send a full RXON, we can use
1931 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1932 * and other flags for the current radio configuration. */
1933 if (!iwl_full_rxon_required(priv
)) {
1934 rc
= iwl_send_rxon_assoc(priv
);
1936 IWL_ERR(priv
, "Error setting RXON_ASSOC "
1937 "configuration (%d).\n", rc
);
1941 memcpy(active_rxon
, staging_rxon
, sizeof(*active_rxon
));
1946 /* If we are currently associated and the new config requires
1947 * an RXON_ASSOC and the new config wants the associated mask enabled,
1948 * we must clear the associated from the active configuration
1949 * before we apply the new config */
1950 if (iwl_is_associated(priv
) && new_assoc
) {
1951 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
1952 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1955 * reserved4 and 5 could have been filled by the iwlcore code.
1956 * Let's clear them before pushing to the 3945.
1958 active_rxon
->reserved4
= 0;
1959 active_rxon
->reserved5
= 0;
1960 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1961 sizeof(struct iwl3945_rxon_cmd
),
1962 &priv
->active_rxon
);
1964 /* If the mask clearing failed then we set
1965 * active_rxon back to what it was previously */
1967 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1968 IWL_ERR(priv
, "Error clearing ASSOC_MSK on current "
1969 "configuration (%d).\n", rc
);
1974 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
1975 "* with%s RXON_FILTER_ASSOC_MSK\n"
1978 (new_assoc
? "" : "out"),
1979 le16_to_cpu(staging_rxon
->channel
),
1980 staging_rxon
->bssid_addr
);
1983 * reserved4 and 5 could have been filled by the iwlcore code.
1984 * Let's clear them before pushing to the 3945.
1986 staging_rxon
->reserved4
= 0;
1987 staging_rxon
->reserved5
= 0;
1989 iwl_set_rxon_hwcrypto(priv
, !priv
->hw_params
.sw_crypto
);
1991 /* Apply the new configuration */
1992 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1993 sizeof(struct iwl3945_rxon_cmd
),
1996 IWL_ERR(priv
, "Error setting new configuration (%d).\n", rc
);
2000 memcpy(active_rxon
, staging_rxon
, sizeof(*active_rxon
));
2002 iwl_clear_stations_table(priv
);
2004 /* If we issue a new RXON command which required a tune then we must
2005 * send a new TXPOWER command or we won't be able to Tx any frames */
2006 rc
= priv
->cfg
->ops
->lib
->send_tx_power(priv
);
2008 IWL_ERR(priv
, "Error setting Tx power (%d).\n", rc
);
2012 /* Add the broadcast address so we can send broadcast frames */
2013 if (iwl_add_station(priv
, iwl_bcast_addr
, false, CMD_SYNC
, NULL
) ==
2014 IWL_INVALID_STATION
) {
2015 IWL_ERR(priv
, "Error adding BROADCAST address for transmit.\n");
2019 /* If we have set the ASSOC_MSK and we are in BSS mode then
2020 * add the IWL_AP_ID to the station rate table */
2021 if (iwl_is_associated(priv
) &&
2022 (priv
->iw_mode
== NL80211_IFTYPE_STATION
))
2023 if (iwl_add_station(priv
, priv
->active_rxon
.bssid_addr
,
2024 true, CMD_SYNC
, NULL
) == IWL_INVALID_STATION
) {
2025 IWL_ERR(priv
, "Error adding AP address for transmit\n");
2029 /* Init the hardware's rate fallback order based on the band */
2030 rc
= iwl3945_init_hw_rate_table(priv
);
2032 IWL_ERR(priv
, "Error setting HW rate table: %02X\n", rc
);
2039 /* will add 3945 channel switch cmd handling later */
2040 int iwl3945_hw_channel_switch(struct iwl_priv
*priv
, u16 channel
)
2046 * iwl3945_reg_txpower_periodic - called when time to check our temperature.
2048 * -- reset periodic timer
2049 * -- see if temp has changed enough to warrant re-calibration ... if so:
2050 * -- correct coeffs for temp (can reset temp timer)
2051 * -- save this temp as "last",
2052 * -- send new set of gain settings to NIC
2053 * NOTE: This should continue working, even when we're not associated,
2054 * so we can keep our internal table of scan powers current. */
2055 void iwl3945_reg_txpower_periodic(struct iwl_priv
*priv
)
2057 /* This will kick in the "brute force"
2058 * iwl3945_hw_reg_comp_txpower_temp() below */
2059 if (!is_temp_calib_needed(priv
))
2062 /* Set up a new set of temp-adjusted TxPowers, send to NIC.
2063 * This is based *only* on current temperature,
2064 * ignoring any previous power measurements */
2065 iwl3945_hw_reg_comp_txpower_temp(priv
);
2068 queue_delayed_work(priv
->workqueue
,
2069 &priv
->thermal_periodic
, REG_RECALIB_PERIOD
* HZ
);
2072 static void iwl3945_bg_reg_txpower_periodic(struct work_struct
*work
)
2074 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
2075 thermal_periodic
.work
);
2077 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
2080 mutex_lock(&priv
->mutex
);
2081 iwl3945_reg_txpower_periodic(priv
);
2082 mutex_unlock(&priv
->mutex
);
2086 * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
2089 * This function is used when initializing channel-info structs.
2091 * NOTE: These channel groups do *NOT* match the bands above!
2092 * These channel groups are based on factory-tested channels;
2093 * on A-band, EEPROM's "group frequency" entries represent the top
2094 * channel in each group 1-4. Group 5 All B/G channels are in group 0.
2096 static u16
iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv
*priv
,
2097 const struct iwl_channel_info
*ch_info
)
2099 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2100 struct iwl3945_eeprom_txpower_group
*ch_grp
= &eeprom
->groups
[0];
2102 u16 group_index
= 0; /* based on factory calib frequencies */
2105 /* Find the group index for the channel ... don't use index 1(?) */
2106 if (is_channel_a_band(ch_info
)) {
2107 for (group
= 1; group
< 5; group
++) {
2108 grp_channel
= ch_grp
[group
].group_channel
;
2109 if (ch_info
->channel
<= grp_channel
) {
2110 group_index
= group
;
2114 /* group 4 has a few channels *above* its factory cal freq */
2118 group_index
= 0; /* 2.4 GHz, group 0 */
2120 IWL_DEBUG_POWER(priv
, "Chnl %d mapped to grp %d\n", ch_info
->channel
,
2126 * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
2128 * Interpolate to get nominal (i.e. at factory calibration temperature) index
2129 * into radio/DSP gain settings table for requested power.
2131 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv
*priv
,
2133 s32 setting_index
, s32
*new_index
)
2135 const struct iwl3945_eeprom_txpower_group
*chnl_grp
= NULL
;
2136 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2138 s32 power
= 2 * requested_power
;
2140 const struct iwl3945_eeprom_txpower_sample
*samples
;
2145 chnl_grp
= &eeprom
->groups
[setting_index
];
2146 samples
= chnl_grp
->samples
;
2147 for (i
= 0; i
< 5; i
++) {
2148 if (power
== samples
[i
].power
) {
2149 *new_index
= samples
[i
].gain_index
;
2154 if (power
> samples
[1].power
) {
2157 } else if (power
> samples
[2].power
) {
2160 } else if (power
> samples
[3].power
) {
2168 denominator
= (s32
) samples
[index1
].power
- (s32
) samples
[index0
].power
;
2169 if (denominator
== 0)
2171 gains0
= (s32
) samples
[index0
].gain_index
* (1 << 19);
2172 gains1
= (s32
) samples
[index1
].gain_index
* (1 << 19);
2173 res
= gains0
+ (gains1
- gains0
) *
2174 ((s32
) power
- (s32
) samples
[index0
].power
) / denominator
+
2176 *new_index
= res
>> 19;
2180 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv
*priv
)
2184 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2185 const struct iwl3945_eeprom_txpower_group
*group
;
2187 IWL_DEBUG_POWER(priv
, "Initializing factory calib info from EEPROM\n");
2189 for (i
= 0; i
< IWL_NUM_TX_CALIB_GROUPS
; i
++) {
2190 s8
*clip_pwrs
; /* table of power levels for each rate */
2191 s8 satur_pwr
; /* saturation power for each chnl group */
2192 group
= &eeprom
->groups
[i
];
2194 /* sanity check on factory saturation power value */
2195 if (group
->saturation_power
< 40) {
2196 IWL_WARN(priv
, "Error: saturation power is %d, "
2197 "less than minimum expected 40\n",
2198 group
->saturation_power
);
2203 * Derive requested power levels for each rate, based on
2204 * hardware capabilities (saturation power for band).
2205 * Basic value is 3dB down from saturation, with further
2206 * power reductions for highest 3 data rates. These
2207 * backoffs provide headroom for high rate modulation
2208 * power peaks, without too much distortion (clipping).
2210 /* we'll fill in this array with h/w max power levels */
2211 clip_pwrs
= (s8
*) priv
->clip39_groups
[i
].clip_powers
;
2213 /* divide factory saturation power by 2 to find -3dB level */
2214 satur_pwr
= (s8
) (group
->saturation_power
>> 1);
2216 /* fill in channel group's nominal powers for each rate */
2217 for (rate_index
= 0;
2218 rate_index
< IWL_RATE_COUNT
; rate_index
++, clip_pwrs
++) {
2219 switch (rate_index
) {
2220 case IWL_RATE_36M_INDEX_TABLE
:
2221 if (i
== 0) /* B/G */
2222 *clip_pwrs
= satur_pwr
;
2224 *clip_pwrs
= satur_pwr
- 5;
2226 case IWL_RATE_48M_INDEX_TABLE
:
2228 *clip_pwrs
= satur_pwr
- 7;
2230 *clip_pwrs
= satur_pwr
- 10;
2232 case IWL_RATE_54M_INDEX_TABLE
:
2234 *clip_pwrs
= satur_pwr
- 9;
2236 *clip_pwrs
= satur_pwr
- 12;
2239 *clip_pwrs
= satur_pwr
;
2247 * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2249 * Second pass (during init) to set up priv->channel_info
2251 * Set up Tx-power settings in our channel info database for each VALID
2252 * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2253 * and current temperature.
2255 * Since this is based on current temperature (at init time), these values may
2256 * not be valid for very long, but it gives us a starting/default point,
2257 * and allows us to active (i.e. using Tx) scan.
2259 * This does *not* write values to NIC, just sets up our internal table.
2261 int iwl3945_txpower_set_from_eeprom(struct iwl_priv
*priv
)
2263 struct iwl_channel_info
*ch_info
= NULL
;
2264 struct iwl3945_channel_power_info
*pwr_info
;
2265 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2269 const s8
*clip_pwrs
; /* array of power levels for each rate */
2272 u8 pwr_index
, base_pwr_index
, a_band
;
2276 /* save temperature reference,
2277 * so we can determine next time to calibrate */
2278 temperature
= iwl3945_hw_reg_txpower_get_temperature(priv
);
2279 priv
->last_temperature
= temperature
;
2281 iwl3945_hw_reg_init_channel_groups(priv
);
2283 /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2284 for (i
= 0, ch_info
= priv
->channel_info
; i
< priv
->channel_count
;
2286 a_band
= is_channel_a_band(ch_info
);
2287 if (!is_channel_valid(ch_info
))
2290 /* find this channel's channel group (*not* "band") index */
2291 ch_info
->group_index
=
2292 iwl3945_hw_reg_get_ch_grp_index(priv
, ch_info
);
2294 /* Get this chnlgrp's rate->max/clip-powers table */
2295 clip_pwrs
= priv
->clip39_groups
[ch_info
->group_index
].clip_powers
;
2297 /* calculate power index *adjustment* value according to
2298 * diff between current temperature and factory temperature */
2299 delta_index
= iwl3945_hw_reg_adjust_power_by_temp(temperature
,
2300 eeprom
->groups
[ch_info
->group_index
].
2303 IWL_DEBUG_POWER(priv
, "Delta index for channel %d: %d [%d]\n",
2304 ch_info
->channel
, delta_index
, temperature
+
2307 /* set tx power value for all OFDM rates */
2308 for (rate_index
= 0; rate_index
< IWL_OFDM_RATES
;
2310 s32
uninitialized_var(power_idx
);
2313 /* use channel group's clip-power table,
2314 * but don't exceed channel's max power */
2315 s8 pwr
= min(ch_info
->max_power_avg
,
2316 clip_pwrs
[rate_index
]);
2318 pwr_info
= &ch_info
->power_info
[rate_index
];
2320 /* get base (i.e. at factory-measured temperature)
2321 * power table index for this rate's power */
2322 rc
= iwl3945_hw_reg_get_matched_power_index(priv
, pwr
,
2323 ch_info
->group_index
,
2326 IWL_ERR(priv
, "Invalid power index\n");
2329 pwr_info
->base_power_index
= (u8
) power_idx
;
2331 /* temperature compensate */
2332 power_idx
+= delta_index
;
2334 /* stay within range of gain table */
2335 power_idx
= iwl3945_hw_reg_fix_power_index(power_idx
);
2337 /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2338 pwr_info
->requested_power
= pwr
;
2339 pwr_info
->power_table_index
= (u8
) power_idx
;
2340 pwr_info
->tpc
.tx_gain
=
2341 power_gain_table
[a_band
][power_idx
].tx_gain
;
2342 pwr_info
->tpc
.dsp_atten
=
2343 power_gain_table
[a_band
][power_idx
].dsp_atten
;
2346 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2347 pwr_info
= &ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
];
2348 power
= pwr_info
->requested_power
+
2349 IWL_CCK_FROM_OFDM_POWER_DIFF
;
2350 pwr_index
= pwr_info
->power_table_index
+
2351 IWL_CCK_FROM_OFDM_INDEX_DIFF
;
2352 base_pwr_index
= pwr_info
->base_power_index
+
2353 IWL_CCK_FROM_OFDM_INDEX_DIFF
;
2355 /* stay within table range */
2356 pwr_index
= iwl3945_hw_reg_fix_power_index(pwr_index
);
2357 gain
= power_gain_table
[a_band
][pwr_index
].tx_gain
;
2358 dsp_atten
= power_gain_table
[a_band
][pwr_index
].dsp_atten
;
2360 /* fill each CCK rate's iwl3945_channel_power_info structure
2361 * NOTE: All CCK-rate Txpwrs are the same for a given chnl!
2362 * NOTE: CCK rates start at end of OFDM rates! */
2363 for (rate_index
= 0;
2364 rate_index
< IWL_CCK_RATES
; rate_index
++) {
2365 pwr_info
= &ch_info
->power_info
[rate_index
+IWL_OFDM_RATES
];
2366 pwr_info
->requested_power
= power
;
2367 pwr_info
->power_table_index
= pwr_index
;
2368 pwr_info
->base_power_index
= base_pwr_index
;
2369 pwr_info
->tpc
.tx_gain
= gain
;
2370 pwr_info
->tpc
.dsp_atten
= dsp_atten
;
2373 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2374 for (scan_tbl_index
= 0;
2375 scan_tbl_index
< IWL_NUM_SCAN_RATES
; scan_tbl_index
++) {
2376 s32 actual_index
= (scan_tbl_index
== 0) ?
2377 IWL_RATE_1M_INDEX_TABLE
: IWL_RATE_6M_INDEX_TABLE
;
2378 iwl3945_hw_reg_set_scan_power(priv
, scan_tbl_index
,
2379 actual_index
, clip_pwrs
, ch_info
, a_band
);
2386 int iwl3945_hw_rxq_stop(struct iwl_priv
*priv
)
2390 iwl_write_direct32(priv
, FH39_RCSR_CONFIG(0), 0);
2391 rc
= iwl_poll_direct_bit(priv
, FH39_RSSR_STATUS
,
2392 FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE
, 1000);
2394 IWL_ERR(priv
, "Can't stop Rx DMA.\n");
2399 int iwl3945_hw_tx_queue_init(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
2401 int txq_id
= txq
->q
.id
;
2403 struct iwl3945_shared
*shared_data
= priv
->shared_virt
;
2405 shared_data
->tx_base_ptr
[txq_id
] = cpu_to_le32((u32
)txq
->q
.dma_addr
);
2407 iwl_write_direct32(priv
, FH39_CBCC_CTRL(txq_id
), 0);
2408 iwl_write_direct32(priv
, FH39_CBCC_BASE(txq_id
), 0);
2410 iwl_write_direct32(priv
, FH39_TCSR_CONFIG(txq_id
),
2411 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT
|
2412 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF
|
2413 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD
|
2414 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
|
2415 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
);
2417 /* fake read to flush all prev. writes */
2418 iwl_read32(priv
, FH39_TSSR_CBB_BASE
);
2426 static u16
iwl3945_get_hcmd_size(u8 cmd_id
, u16 len
)
2430 return sizeof(struct iwl3945_rxon_cmd
);
2431 case POWER_TABLE_CMD
:
2432 return sizeof(struct iwl3945_powertable_cmd
);
2439 static u16
iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd
*cmd
, u8
*data
)
2441 struct iwl3945_addsta_cmd
*addsta
= (struct iwl3945_addsta_cmd
*)data
;
2442 addsta
->mode
= cmd
->mode
;
2443 memcpy(&addsta
->sta
, &cmd
->sta
, sizeof(struct sta_id_modify
));
2444 memcpy(&addsta
->key
, &cmd
->key
, sizeof(struct iwl4965_keyinfo
));
2445 addsta
->station_flags
= cmd
->station_flags
;
2446 addsta
->station_flags_msk
= cmd
->station_flags_msk
;
2447 addsta
->tid_disable_tx
= cpu_to_le16(0);
2448 addsta
->rate_n_flags
= cmd
->rate_n_flags
;
2449 addsta
->add_immediate_ba_tid
= cmd
->add_immediate_ba_tid
;
2450 addsta
->remove_immediate_ba_tid
= cmd
->remove_immediate_ba_tid
;
2451 addsta
->add_immediate_ba_ssn
= cmd
->add_immediate_ba_ssn
;
2453 return (u16
)sizeof(struct iwl3945_addsta_cmd
);
2458 * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2460 int iwl3945_init_hw_rate_table(struct iwl_priv
*priv
)
2462 int rc
, i
, index
, prev_index
;
2463 struct iwl3945_rate_scaling_cmd rate_cmd
= {
2464 .reserved
= {0, 0, 0},
2466 struct iwl3945_rate_scaling_info
*table
= rate_cmd
.table
;
2468 for (i
= 0; i
< ARRAY_SIZE(iwl3945_rates
); i
++) {
2469 index
= iwl3945_rates
[i
].table_rs_index
;
2471 table
[index
].rate_n_flags
=
2472 iwl3945_hw_set_rate_n_flags(iwl3945_rates
[i
].plcp
, 0);
2473 table
[index
].try_cnt
= priv
->retry_rate
;
2474 prev_index
= iwl3945_get_prev_ieee_rate(i
);
2475 table
[index
].next_rate_index
=
2476 iwl3945_rates
[prev_index
].table_rs_index
;
2479 switch (priv
->band
) {
2480 case IEEE80211_BAND_5GHZ
:
2481 IWL_DEBUG_RATE(priv
, "Select A mode rate scale\n");
2482 /* If one of the following CCK rates is used,
2483 * have it fall back to the 6M OFDM rate */
2484 for (i
= IWL_RATE_1M_INDEX_TABLE
;
2485 i
<= IWL_RATE_11M_INDEX_TABLE
; i
++)
2486 table
[i
].next_rate_index
=
2487 iwl3945_rates
[IWL_FIRST_OFDM_RATE
].table_rs_index
;
2489 /* Don't fall back to CCK rates */
2490 table
[IWL_RATE_12M_INDEX_TABLE
].next_rate_index
=
2491 IWL_RATE_9M_INDEX_TABLE
;
2493 /* Don't drop out of OFDM rates */
2494 table
[IWL_RATE_6M_INDEX_TABLE
].next_rate_index
=
2495 iwl3945_rates
[IWL_FIRST_OFDM_RATE
].table_rs_index
;
2498 case IEEE80211_BAND_2GHZ
:
2499 IWL_DEBUG_RATE(priv
, "Select B/G mode rate scale\n");
2500 /* If an OFDM rate is used, have it fall back to the
2503 if (!(priv
->sta_supp_rates
& IWL_OFDM_RATES_MASK
) &&
2504 iwl_is_associated(priv
)) {
2506 index
= IWL_FIRST_CCK_RATE
;
2507 for (i
= IWL_RATE_6M_INDEX_TABLE
;
2508 i
<= IWL_RATE_54M_INDEX_TABLE
; i
++)
2509 table
[i
].next_rate_index
=
2510 iwl3945_rates
[index
].table_rs_index
;
2512 index
= IWL_RATE_11M_INDEX_TABLE
;
2513 /* CCK shouldn't fall back to OFDM... */
2514 table
[index
].next_rate_index
= IWL_RATE_5M_INDEX_TABLE
;
2523 /* Update the rate scaling for control frame Tx */
2524 rate_cmd
.table_id
= 0;
2525 rc
= iwl_send_cmd_pdu(priv
, REPLY_RATE_SCALE
, sizeof(rate_cmd
),
2530 /* Update the rate scaling for data frame Tx */
2531 rate_cmd
.table_id
= 1;
2532 return iwl_send_cmd_pdu(priv
, REPLY_RATE_SCALE
, sizeof(rate_cmd
),
2536 /* Called when initializing driver */
2537 int iwl3945_hw_set_hw_params(struct iwl_priv
*priv
)
2539 memset((void *)&priv
->hw_params
, 0,
2540 sizeof(struct iwl_hw_params
));
2543 pci_alloc_consistent(priv
->pci_dev
,
2544 sizeof(struct iwl3945_shared
),
2545 &priv
->shared_phys
);
2547 if (!priv
->shared_virt
) {
2548 IWL_ERR(priv
, "failed to allocate pci memory\n");
2549 mutex_unlock(&priv
->mutex
);
2553 /* Assign number of Usable TX queues */
2554 priv
->hw_params
.max_txq_num
= TFD_QUEUE_MAX
;
2556 priv
->hw_params
.tfd_size
= sizeof(struct iwl3945_tfd
);
2557 priv
->hw_params
.rx_buf_size
= IWL_RX_BUF_SIZE_3K
;
2558 priv
->hw_params
.max_pkt_size
= 2342;
2559 priv
->hw_params
.max_rxq_size
= RX_QUEUE_SIZE
;
2560 priv
->hw_params
.max_rxq_log
= RX_QUEUE_SIZE_LOG
;
2561 priv
->hw_params
.max_stations
= IWL3945_STATION_COUNT
;
2562 priv
->hw_params
.bcast_sta_id
= IWL3945_BROADCAST_ID
;
2564 priv
->hw_params
.rx_wrt_ptr_reg
= FH39_RSCSR_CHNL0_WPTR
;
2569 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv
*priv
,
2570 struct iwl3945_frame
*frame
, u8 rate
)
2572 struct iwl3945_tx_beacon_cmd
*tx_beacon_cmd
;
2573 unsigned int frame_size
;
2575 tx_beacon_cmd
= (struct iwl3945_tx_beacon_cmd
*)&frame
->u
;
2576 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
2578 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2579 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2581 frame_size
= iwl3945_fill_beacon_frame(priv
,
2582 tx_beacon_cmd
->frame
,
2583 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
2585 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
2586 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
2588 tx_beacon_cmd
->tx
.rate
= rate
;
2589 tx_beacon_cmd
->tx
.tx_flags
= (TX_CMD_FLG_SEQ_CTL_MSK
|
2590 TX_CMD_FLG_TSF_MSK
);
2592 /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2593 tx_beacon_cmd
->tx
.supp_rates
[0] =
2594 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2596 tx_beacon_cmd
->tx
.supp_rates
[1] =
2597 (IWL_CCK_BASIC_RATES_MASK
& 0xF);
2599 return sizeof(struct iwl3945_tx_beacon_cmd
) + frame_size
;
2602 void iwl3945_hw_rx_handler_setup(struct iwl_priv
*priv
)
2604 priv
->rx_handlers
[REPLY_TX
] = iwl3945_rx_reply_tx
;
2605 priv
->rx_handlers
[REPLY_3945_RX
] = iwl3945_rx_reply_rx
;
2608 void iwl3945_hw_setup_deferred_work(struct iwl_priv
*priv
)
2610 INIT_DELAYED_WORK(&priv
->thermal_periodic
,
2611 iwl3945_bg_reg_txpower_periodic
);
2614 void iwl3945_hw_cancel_deferred_work(struct iwl_priv
*priv
)
2616 cancel_delayed_work(&priv
->thermal_periodic
);
2619 /* check contents of special bootstrap uCode SRAM */
2620 static int iwl3945_verify_bsm(struct iwl_priv
*priv
)
2622 __le32
*image
= priv
->ucode_boot
.v_addr
;
2623 u32 len
= priv
->ucode_boot
.len
;
2627 IWL_DEBUG_INFO(priv
, "Begin verify bsm\n");
2629 /* verify BSM SRAM contents */
2630 val
= iwl_read_prph(priv
, BSM_WR_DWCOUNT_REG
);
2631 for (reg
= BSM_SRAM_LOWER_BOUND
;
2632 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
2633 reg
+= sizeof(u32
), image
++) {
2634 val
= iwl_read_prph(priv
, reg
);
2635 if (val
!= le32_to_cpu(*image
)) {
2636 IWL_ERR(priv
, "BSM uCode verification failed at "
2637 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2638 BSM_SRAM_LOWER_BOUND
,
2639 reg
- BSM_SRAM_LOWER_BOUND
, len
,
2640 val
, le32_to_cpu(*image
));
2645 IWL_DEBUG_INFO(priv
, "BSM bootstrap uCode image OK\n");
2651 /******************************************************************************
2653 * EEPROM related functions
2655 ******************************************************************************/
2658 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2659 * embedded controller) as EEPROM reader; each read is a series of pulses
2660 * to/from the EEPROM chip, not a single event, so even reads could conflict
2661 * if they weren't arbitrated by some ownership mechanism. Here, the driver
2662 * simply claims ownership, which should be safe when this function is called
2663 * (i.e. before loading uCode!).
2665 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv
*priv
)
2667 _iwl_clear_bit(priv
, CSR_EEPROM_GP
, CSR_EEPROM_GP_IF_OWNER_MSK
);
2672 static void iwl3945_eeprom_release_semaphore(struct iwl_priv
*priv
)
2678 * iwl3945_load_bsm - Load bootstrap instructions
2682 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2683 * in special SRAM that does not power down during RFKILL. When powering back
2684 * up after power-saving sleeps (or during initial uCode load), the BSM loads
2685 * the bootstrap program into the on-board processor, and starts it.
2687 * The bootstrap program loads (via DMA) instructions and data for a new
2688 * program from host DRAM locations indicated by the host driver in the
2689 * BSM_DRAM_* registers. Once the new program is loaded, it starts
2692 * When initializing the NIC, the host driver points the BSM to the
2693 * "initialize" uCode image. This uCode sets up some internal data, then
2694 * notifies host via "initialize alive" that it is complete.
2696 * The host then replaces the BSM_DRAM_* pointer values to point to the
2697 * normal runtime uCode instructions and a backup uCode data cache buffer
2698 * (filled initially with starting data values for the on-board processor),
2699 * then triggers the "initialize" uCode to load and launch the runtime uCode,
2700 * which begins normal operation.
2702 * When doing a power-save shutdown, runtime uCode saves data SRAM into
2703 * the backup data cache in DRAM before SRAM is powered down.
2705 * When powering back up, the BSM loads the bootstrap program. This reloads
2706 * the runtime uCode instructions and the backup data cache into SRAM,
2707 * and re-launches the runtime uCode from where it left off.
2709 static int iwl3945_load_bsm(struct iwl_priv
*priv
)
2711 __le32
*image
= priv
->ucode_boot
.v_addr
;
2712 u32 len
= priv
->ucode_boot
.len
;
2722 IWL_DEBUG_INFO(priv
, "Begin load bsm\n");
2724 /* make sure bootstrap program is no larger than BSM's SRAM size */
2725 if (len
> IWL39_MAX_BSM_SIZE
)
2728 /* Tell bootstrap uCode where to find the "Initialize" uCode
2729 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2730 * NOTE: iwl3945_initialize_alive_start() will replace these values,
2731 * after the "initialize" uCode has run, to point to
2732 * runtime/protocol instructions and backup data cache. */
2733 pinst
= priv
->ucode_init
.p_addr
;
2734 pdata
= priv
->ucode_init_data
.p_addr
;
2735 inst_len
= priv
->ucode_init
.len
;
2736 data_len
= priv
->ucode_init_data
.len
;
2738 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2739 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2740 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
2741 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
2743 /* Fill BSM memory with bootstrap instructions */
2744 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
2745 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
2746 reg_offset
+= sizeof(u32
), image
++)
2747 _iwl_write_prph(priv
, reg_offset
,
2748 le32_to_cpu(*image
));
2750 rc
= iwl3945_verify_bsm(priv
);
2754 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2755 iwl_write_prph(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
2756 iwl_write_prph(priv
, BSM_WR_MEM_DST_REG
,
2757 IWL39_RTC_INST_LOWER_BOUND
);
2758 iwl_write_prph(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
2760 /* Load bootstrap code into instruction SRAM now,
2761 * to prepare to load "initialize" uCode */
2762 iwl_write_prph(priv
, BSM_WR_CTRL_REG
,
2763 BSM_WR_CTRL_REG_BIT_START
);
2765 /* Wait for load of bootstrap uCode to finish */
2766 for (i
= 0; i
< 100; i
++) {
2767 done
= iwl_read_prph(priv
, BSM_WR_CTRL_REG
);
2768 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
2773 IWL_DEBUG_INFO(priv
, "BSM write complete, poll %d iterations\n", i
);
2775 IWL_ERR(priv
, "BSM write did not complete!\n");
2779 /* Enable future boot loads whenever power management unit triggers it
2780 * (e.g. when powering back up after power-save shutdown) */
2781 iwl_write_prph(priv
, BSM_WR_CTRL_REG
,
2782 BSM_WR_CTRL_REG_BIT_START_EN
);
2787 static struct iwl_hcmd_ops iwl3945_hcmd
= {
2788 .rxon_assoc
= iwl3945_send_rxon_assoc
,
2789 .commit_rxon
= iwl3945_commit_rxon
,
2792 static struct iwl_lib_ops iwl3945_lib
= {
2793 .txq_attach_buf_to_tfd
= iwl3945_hw_txq_attach_buf_to_tfd
,
2794 .txq_free_tfd
= iwl3945_hw_txq_free_tfd
,
2795 .txq_init
= iwl3945_hw_tx_queue_init
,
2796 .load_ucode
= iwl3945_load_bsm
,
2798 .init
= iwl3945_apm_init
,
2799 .reset
= iwl3945_apm_reset
,
2800 .stop
= iwl3945_apm_stop
,
2801 .config
= iwl3945_nic_config
,
2802 .set_pwr_src
= iwl3945_set_pwr_src
,
2805 .regulatory_bands
= {
2806 EEPROM_REGULATORY_BAND_1_CHANNELS
,
2807 EEPROM_REGULATORY_BAND_2_CHANNELS
,
2808 EEPROM_REGULATORY_BAND_3_CHANNELS
,
2809 EEPROM_REGULATORY_BAND_4_CHANNELS
,
2810 EEPROM_REGULATORY_BAND_5_CHANNELS
,
2811 EEPROM_REGULATORY_BAND_NO_FAT
,
2812 EEPROM_REGULATORY_BAND_NO_FAT
,
2814 .verify_signature
= iwlcore_eeprom_verify_signature
,
2815 .acquire_semaphore
= iwl3945_eeprom_acquire_semaphore
,
2816 .release_semaphore
= iwl3945_eeprom_release_semaphore
,
2817 .query_addr
= iwlcore_eeprom_query_addr
,
2819 .send_tx_power
= iwl3945_send_tx_power
,
2820 .is_valid_rtc_data_addr
= iwl3945_hw_valid_rtc_data_addr
,
2821 .post_associate
= iwl3945_post_associate
,
2822 .isr
= iwl_isr_legacy
,
2823 .config_ap
= iwl3945_config_ap
,
2826 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils
= {
2827 .get_hcmd_size
= iwl3945_get_hcmd_size
,
2828 .build_addsta_hcmd
= iwl3945_build_addsta_hcmd
,
2831 static struct iwl_ops iwl3945_ops
= {
2832 .lib
= &iwl3945_lib
,
2833 .hcmd
= &iwl3945_hcmd
,
2834 .utils
= &iwl3945_hcmd_utils
,
2837 static struct iwl_cfg iwl3945_bg_cfg
= {
2839 .fw_name_pre
= IWL3945_FW_PRE
,
2840 .ucode_api_max
= IWL3945_UCODE_API_MAX
,
2841 .ucode_api_min
= IWL3945_UCODE_API_MIN
,
2843 .eeprom_size
= IWL3945_EEPROM_IMG_SIZE
,
2844 .eeprom_ver
= EEPROM_3945_EEPROM_VERSION
,
2845 .ops
= &iwl3945_ops
,
2846 .mod_params
= &iwl3945_mod_params
,
2847 .use_isr_legacy
= true
2850 static struct iwl_cfg iwl3945_abg_cfg
= {
2852 .fw_name_pre
= IWL3945_FW_PRE
,
2853 .ucode_api_max
= IWL3945_UCODE_API_MAX
,
2854 .ucode_api_min
= IWL3945_UCODE_API_MIN
,
2855 .sku
= IWL_SKU_A
|IWL_SKU_G
,
2856 .eeprom_size
= IWL3945_EEPROM_IMG_SIZE
,
2857 .eeprom_ver
= EEPROM_3945_EEPROM_VERSION
,
2858 .ops
= &iwl3945_ops
,
2859 .mod_params
= &iwl3945_mod_params
,
2860 .use_isr_legacy
= true
2863 struct pci_device_id iwl3945_hw_card_ids
[] = {
2864 {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg
)},
2865 {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg
)},
2866 {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg
)},
2867 {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg
)},
2868 {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID
, iwl3945_abg_cfg
)},
2869 {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID
, iwl3945_abg_cfg
)},
2873 MODULE_DEVICE_TABLE(pci
, iwl3945_hw_card_ids
);