1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/pci.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/wireless.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <asm/unaligned.h>
41 #include <net/mac80211.h>
44 #include "iwl-3945-fh.h"
45 #include "iwl-commands.h"
48 #include "iwl-eeprom.h"
50 #include "iwl-helpers.h"
52 #include "iwl-3945-led.h"
53 #include "iwl-3945-debugfs.h"
55 #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \
56 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
57 IWL_RATE_##r##M_IEEE, \
58 IWL_RATE_##ip##M_INDEX, \
59 IWL_RATE_##in##M_INDEX, \
60 IWL_RATE_##rp##M_INDEX, \
61 IWL_RATE_##rn##M_INDEX, \
62 IWL_RATE_##pp##M_INDEX, \
63 IWL_RATE_##np##M_INDEX, \
64 IWL_RATE_##r##M_INDEX_TABLE, \
65 IWL_RATE_##ip##M_INDEX_TABLE }
69 * rate, prev rate, next rate, prev tgg rate, next tgg rate
71 * If there isn't a valid next or previous rate then INV is used which
72 * maps to IWL_RATE_INVALID
75 const struct iwl3945_rate_info iwl3945_rates
[IWL_RATE_COUNT_3945
] = {
76 IWL_DECLARE_RATE_INFO(1, INV
, 2, INV
, 2, INV
, 2), /* 1mbps */
77 IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */
78 IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */
79 IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */
80 IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */
81 IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */
82 IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */
83 IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */
84 IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */
85 IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */
86 IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */
87 IWL_DECLARE_RATE_INFO(54, 48, INV
, 48, INV
, 48, INV
),/* 54mbps */
90 /* 1 = enable the iwl3945_disable_events() function */
91 #define IWL_EVT_DISABLE (0)
92 #define IWL_EVT_DISABLE_SIZE (1532/32)
95 * iwl3945_disable_events - Disable selected events in uCode event log
97 * Disable an event by writing "1"s into "disable"
98 * bitmap in SRAM. Bit position corresponds to Event # (id/type).
99 * Default values of 0 enable uCode events to be logged.
100 * Use for only special debugging. This function is just a placeholder as-is,
101 * you'll need to provide the special bits! ...
102 * ... and set IWL_EVT_DISABLE to 1. */
103 void iwl3945_disable_events(struct iwl_priv
*priv
)
106 u32 base
; /* SRAM address of event log header */
107 u32 disable_ptr
; /* SRAM address of event-disable bitmap array */
108 u32 array_size
; /* # of u32 entries in array */
109 u32 evt_disable
[IWL_EVT_DISABLE_SIZE
] = {
110 0x00000000, /* 31 - 0 Event id numbers */
111 0x00000000, /* 63 - 32 */
112 0x00000000, /* 95 - 64 */
113 0x00000000, /* 127 - 96 */
114 0x00000000, /* 159 - 128 */
115 0x00000000, /* 191 - 160 */
116 0x00000000, /* 223 - 192 */
117 0x00000000, /* 255 - 224 */
118 0x00000000, /* 287 - 256 */
119 0x00000000, /* 319 - 288 */
120 0x00000000, /* 351 - 320 */
121 0x00000000, /* 383 - 352 */
122 0x00000000, /* 415 - 384 */
123 0x00000000, /* 447 - 416 */
124 0x00000000, /* 479 - 448 */
125 0x00000000, /* 511 - 480 */
126 0x00000000, /* 543 - 512 */
127 0x00000000, /* 575 - 544 */
128 0x00000000, /* 607 - 576 */
129 0x00000000, /* 639 - 608 */
130 0x00000000, /* 671 - 640 */
131 0x00000000, /* 703 - 672 */
132 0x00000000, /* 735 - 704 */
133 0x00000000, /* 767 - 736 */
134 0x00000000, /* 799 - 768 */
135 0x00000000, /* 831 - 800 */
136 0x00000000, /* 863 - 832 */
137 0x00000000, /* 895 - 864 */
138 0x00000000, /* 927 - 896 */
139 0x00000000, /* 959 - 928 */
140 0x00000000, /* 991 - 960 */
141 0x00000000, /* 1023 - 992 */
142 0x00000000, /* 1055 - 1024 */
143 0x00000000, /* 1087 - 1056 */
144 0x00000000, /* 1119 - 1088 */
145 0x00000000, /* 1151 - 1120 */
146 0x00000000, /* 1183 - 1152 */
147 0x00000000, /* 1215 - 1184 */
148 0x00000000, /* 1247 - 1216 */
149 0x00000000, /* 1279 - 1248 */
150 0x00000000, /* 1311 - 1280 */
151 0x00000000, /* 1343 - 1312 */
152 0x00000000, /* 1375 - 1344 */
153 0x00000000, /* 1407 - 1376 */
154 0x00000000, /* 1439 - 1408 */
155 0x00000000, /* 1471 - 1440 */
156 0x00000000, /* 1503 - 1472 */
159 base
= le32_to_cpu(priv
->card_alive
.log_event_table_ptr
);
160 if (!iwl3945_hw_valid_rtc_data_addr(base
)) {
161 IWL_ERR(priv
, "Invalid event log pointer 0x%08X\n", base
);
165 disable_ptr
= iwl_read_targ_mem(priv
, base
+ (4 * sizeof(u32
)));
166 array_size
= iwl_read_targ_mem(priv
, base
+ (5 * sizeof(u32
)));
168 if (IWL_EVT_DISABLE
&& (array_size
== IWL_EVT_DISABLE_SIZE
)) {
169 IWL_DEBUG_INFO(priv
, "Disabling selected uCode log events at 0x%x\n",
171 for (i
= 0; i
< IWL_EVT_DISABLE_SIZE
; i
++)
172 iwl_write_targ_mem(priv
,
173 disable_ptr
+ (i
* sizeof(u32
)),
177 IWL_DEBUG_INFO(priv
, "Selected uCode log events may be disabled\n");
178 IWL_DEBUG_INFO(priv
, " by writing \"1\"s into disable bitmap\n");
179 IWL_DEBUG_INFO(priv
, " in SRAM at 0x%x, size %d u32s\n",
180 disable_ptr
, array_size
);
185 static int iwl3945_hwrate_to_plcp_idx(u8 plcp
)
189 for (idx
= 0; idx
< IWL_RATE_COUNT_3945
; idx
++)
190 if (iwl3945_rates
[idx
].plcp
== plcp
)
195 #ifdef CONFIG_IWLWIFI_DEBUG
196 #define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x
198 static const char *iwl3945_get_tx_fail_reason(u32 status
)
200 switch (status
& TX_STATUS_MSK
) {
201 case TX_3945_STATUS_SUCCESS
:
203 TX_STATUS_ENTRY(SHORT_LIMIT
);
204 TX_STATUS_ENTRY(LONG_LIMIT
);
205 TX_STATUS_ENTRY(FIFO_UNDERRUN
);
206 TX_STATUS_ENTRY(MGMNT_ABORT
);
207 TX_STATUS_ENTRY(NEXT_FRAG
);
208 TX_STATUS_ENTRY(LIFE_EXPIRE
);
209 TX_STATUS_ENTRY(DEST_PS
);
210 TX_STATUS_ENTRY(ABORTED
);
211 TX_STATUS_ENTRY(BT_RETRY
);
212 TX_STATUS_ENTRY(STA_INVALID
);
213 TX_STATUS_ENTRY(FRAG_DROPPED
);
214 TX_STATUS_ENTRY(TID_DISABLE
);
215 TX_STATUS_ENTRY(FRAME_FLUSHED
);
216 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL
);
217 TX_STATUS_ENTRY(TX_LOCKED
);
218 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR
);
224 static inline const char *iwl3945_get_tx_fail_reason(u32 status
)
231 * get ieee prev rate from rate scale table.
232 * for A and B mode we need to overright prev
235 int iwl3945_rs_next_rate(struct iwl_priv
*priv
, int rate
)
237 int next_rate
= iwl3945_get_prev_ieee_rate(rate
);
239 switch (priv
->band
) {
240 case IEEE80211_BAND_5GHZ
:
241 if (rate
== IWL_RATE_12M_INDEX
)
242 next_rate
= IWL_RATE_9M_INDEX
;
243 else if (rate
== IWL_RATE_6M_INDEX
)
244 next_rate
= IWL_RATE_6M_INDEX
;
246 case IEEE80211_BAND_2GHZ
:
247 if (!(priv
->_3945
.sta_supp_rates
& IWL_OFDM_RATES_MASK
) &&
248 iwl_is_associated(priv
)) {
249 if (rate
== IWL_RATE_11M_INDEX
)
250 next_rate
= IWL_RATE_5M_INDEX
;
263 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
265 * When FW advances 'R' index, all entries between old and new 'R' index
266 * need to be reclaimed. As result, some free space forms. If there is
267 * enough free space (> low mark), wake the stack that feeds us.
269 static void iwl3945_tx_queue_reclaim(struct iwl_priv
*priv
,
270 int txq_id
, int index
)
272 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
273 struct iwl_queue
*q
= &txq
->q
;
274 struct iwl_tx_info
*tx_info
;
276 BUG_ON(txq_id
== IWL_CMD_QUEUE_NUM
);
278 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
); q
->read_ptr
!= index
;
279 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
281 tx_info
= &txq
->txb
[txq
->q
.read_ptr
];
282 ieee80211_tx_status_irqsafe(priv
->hw
, tx_info
->skb
);
284 priv
->cfg
->ops
->lib
->txq_free_tfd(priv
, txq
);
287 if (iwl_queue_space(q
) > q
->low_mark
&& (txq_id
>= 0) &&
288 (txq_id
!= IWL_CMD_QUEUE_NUM
) &&
289 priv
->mac80211_registered
)
290 iwl_wake_queue(priv
, txq_id
);
294 * iwl3945_rx_reply_tx - Handle Tx response
296 static void iwl3945_rx_reply_tx(struct iwl_priv
*priv
,
297 struct iwl_rx_mem_buffer
*rxb
)
299 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
300 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
301 int txq_id
= SEQ_TO_QUEUE(sequence
);
302 int index
= SEQ_TO_INDEX(sequence
);
303 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
304 struct ieee80211_tx_info
*info
;
305 struct iwl3945_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
306 u32 status
= le32_to_cpu(tx_resp
->status
);
310 if ((index
>= txq
->q
.n_bd
) || (iwl_queue_used(&txq
->q
, index
) == 0)) {
311 IWL_ERR(priv
, "Read index for DMA queue txq_id (%d) index %d "
312 "is out of range [0-%d] %d %d\n", txq_id
,
313 index
, txq
->q
.n_bd
, txq
->q
.write_ptr
,
318 info
= IEEE80211_SKB_CB(txq
->txb
[txq
->q
.read_ptr
].skb
);
319 ieee80211_tx_info_clear_status(info
);
321 /* Fill the MRR chain with some info about on-chip retransmissions */
322 rate_idx
= iwl3945_hwrate_to_plcp_idx(tx_resp
->rate
);
323 if (info
->band
== IEEE80211_BAND_5GHZ
)
324 rate_idx
-= IWL_FIRST_OFDM_RATE
;
326 fail
= tx_resp
->failure_frame
;
328 info
->status
.rates
[0].idx
= rate_idx
;
329 info
->status
.rates
[0].count
= fail
+ 1; /* add final attempt */
331 /* tx_status->rts_retry_count = tx_resp->failure_rts; */
332 info
->flags
|= ((status
& TX_STATUS_MSK
) == TX_STATUS_SUCCESS
) ?
333 IEEE80211_TX_STAT_ACK
: 0;
335 IWL_DEBUG_TX(priv
, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
336 txq_id
, iwl3945_get_tx_fail_reason(status
), status
,
337 tx_resp
->rate
, tx_resp
->failure_frame
);
339 IWL_DEBUG_TX_REPLY(priv
, "Tx queue reclaim %d\n", index
);
340 iwl3945_tx_queue_reclaim(priv
, txq_id
, index
);
342 if (iwl_check_bits(status
, TX_ABORT_REQUIRED_MSK
))
343 IWL_ERR(priv
, "TODO: Implement Tx ABORT REQUIRED!!!\n");
348 /*****************************************************************************
350 * Intel PRO/Wireless 3945ABG/BG Network Connection
352 * RX handler implementations
354 *****************************************************************************/
355 #ifdef CONFIG_IWLWIFI_DEBUGFS
357 * based on the assumption of all statistics counter are in DWORD
358 * FIXME: This function is for debugging, do not deal with
359 * the case of counters roll-over.
361 static void iwl3945_accumulative_statistics(struct iwl_priv
*priv
,
367 u32
*delta
, *max_delta
;
369 prev_stats
= (__le32
*)&priv
->_3945
.statistics
;
370 accum_stats
= (u32
*)&priv
->_3945
.accum_statistics
;
371 delta
= (u32
*)&priv
->_3945
.delta_statistics
;
372 max_delta
= (u32
*)&priv
->_3945
.max_delta
;
374 for (i
= sizeof(__le32
); i
< sizeof(struct iwl3945_notif_statistics
);
375 i
+= sizeof(__le32
), stats
++, prev_stats
++, delta
++,
376 max_delta
++, accum_stats
++) {
377 if (le32_to_cpu(*stats
) > le32_to_cpu(*prev_stats
)) {
378 *delta
= (le32_to_cpu(*stats
) -
379 le32_to_cpu(*prev_stats
));
380 *accum_stats
+= *delta
;
381 if (*delta
> *max_delta
)
386 /* reset accumulative statistics for "no-counter" type statistics */
387 priv
->_3945
.accum_statistics
.general
.temperature
=
388 priv
->_3945
.statistics
.general
.temperature
;
389 priv
->_3945
.accum_statistics
.general
.ttl_timestamp
=
390 priv
->_3945
.statistics
.general
.ttl_timestamp
;
395 * iwl3945_good_plcp_health - checks for plcp error.
397 * When the plcp error is exceeding the thresholds, reset the radio
398 * to improve the throughput.
400 static bool iwl3945_good_plcp_health(struct iwl_priv
*priv
,
401 struct iwl_rx_packet
*pkt
)
404 struct iwl3945_notif_statistics current_stat
;
405 int combined_plcp_delta
;
406 unsigned int plcp_msec
;
407 unsigned long plcp_received_jiffies
;
409 memcpy(¤t_stat
, pkt
->u
.raw
, sizeof(struct
410 iwl3945_notif_statistics
));
412 * check for plcp_err and trigger radio reset if it exceeds
413 * the plcp error threshold plcp_delta.
415 plcp_received_jiffies
= jiffies
;
416 plcp_msec
= jiffies_to_msecs((long) plcp_received_jiffies
-
417 (long) priv
->plcp_jiffies
);
418 priv
->plcp_jiffies
= plcp_received_jiffies
;
420 * check to make sure plcp_msec is not 0 to prevent division
424 combined_plcp_delta
=
425 (le32_to_cpu(current_stat
.rx
.ofdm
.plcp_err
) -
426 le32_to_cpu(priv
->_3945
.statistics
.rx
.ofdm
.plcp_err
));
428 if ((combined_plcp_delta
> 0) &&
429 ((combined_plcp_delta
* 100) / plcp_msec
) >
430 priv
->cfg
->plcp_delta_threshold
) {
432 * if plcp_err exceed the threshold, the following
433 * data is printed in csv format:
434 * Text: plcp_err exceeded %d,
435 * Received ofdm.plcp_err,
436 * Current ofdm.plcp_err,
437 * combined_plcp_delta,
440 IWL_DEBUG_RADIO(priv
, "plcp_err exceeded %u, "
441 "%u, %d, %u mSecs\n",
442 priv
->cfg
->plcp_delta_threshold
,
443 le32_to_cpu(current_stat
.rx
.ofdm
.plcp_err
),
444 combined_plcp_delta
, plcp_msec
);
446 * Reset the RF radio due to the high plcp
455 void iwl3945_hw_rx_statistics(struct iwl_priv
*priv
,
456 struct iwl_rx_mem_buffer
*rxb
)
458 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
460 IWL_DEBUG_RX(priv
, "Statistics notification received (%d vs %d).\n",
461 (int)sizeof(struct iwl3945_notif_statistics
),
462 le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
);
463 #ifdef CONFIG_IWLWIFI_DEBUGFS
464 iwl3945_accumulative_statistics(priv
, (__le32
*)&pkt
->u
.raw
);
466 iwl_recover_from_statistics(priv
, pkt
);
468 memcpy(&priv
->_3945
.statistics
, pkt
->u
.raw
, sizeof(priv
->_3945
.statistics
));
471 void iwl3945_reply_statistics(struct iwl_priv
*priv
,
472 struct iwl_rx_mem_buffer
*rxb
)
474 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
475 __le32
*flag
= (__le32
*)&pkt
->u
.raw
;
477 if (le32_to_cpu(*flag
) & UCODE_STATISTICS_CLEAR_MSK
) {
478 #ifdef CONFIG_IWLWIFI_DEBUGFS
479 memset(&priv
->_3945
.accum_statistics
, 0,
480 sizeof(struct iwl3945_notif_statistics
));
481 memset(&priv
->_3945
.delta_statistics
, 0,
482 sizeof(struct iwl3945_notif_statistics
));
483 memset(&priv
->_3945
.max_delta
, 0,
484 sizeof(struct iwl3945_notif_statistics
));
486 IWL_DEBUG_RX(priv
, "Statistics have been cleared\n");
488 iwl3945_hw_rx_statistics(priv
, rxb
);
492 /******************************************************************************
494 * Misc. internal state and helper functions
496 ******************************************************************************/
498 /* This is necessary only for a number of statistics, see the caller. */
499 static int iwl3945_is_network_packet(struct iwl_priv
*priv
,
500 struct ieee80211_hdr
*header
)
502 /* Filter incoming packets to determine if they are targeted toward
503 * this network, discarding packets coming from ourselves */
504 switch (priv
->iw_mode
) {
505 case NL80211_IFTYPE_ADHOC
: /* Header: Dest. | Source | BSSID */
506 /* packets to our IBSS update information */
507 return !compare_ether_addr(header
->addr3
, priv
->bssid
);
508 case NL80211_IFTYPE_STATION
: /* Header: Dest. | AP{BSSID} | Source */
509 /* packets to our IBSS update information */
510 return !compare_ether_addr(header
->addr2
, priv
->bssid
);
516 static void iwl3945_pass_packet_to_mac80211(struct iwl_priv
*priv
,
517 struct iwl_rx_mem_buffer
*rxb
,
518 struct ieee80211_rx_status
*stats
)
520 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
521 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)IWL_RX_DATA(pkt
);
522 struct iwl3945_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
523 struct iwl3945_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
524 u16 len
= le16_to_cpu(rx_hdr
->len
);
526 __le16 fc
= hdr
->frame_control
;
528 /* We received data from the HW, so stop the watchdog */
529 if (unlikely(len
+ IWL39_RX_FRAME_SIZE
>
530 PAGE_SIZE
<< priv
->hw_params
.rx_page_order
)) {
531 IWL_DEBUG_DROP(priv
, "Corruption detected!\n");
535 /* We only process data packets if the interface is open */
536 if (unlikely(!priv
->is_open
)) {
537 IWL_DEBUG_DROP_LIMIT(priv
,
538 "Dropping packet while interface is not open.\n");
542 skb
= dev_alloc_skb(128);
544 IWL_ERR(priv
, "dev_alloc_skb failed\n");
548 if (!iwl3945_mod_params
.sw_crypto
)
549 iwl_set_decrypted_flag(priv
,
550 (struct ieee80211_hdr
*)rxb_addr(rxb
),
551 le32_to_cpu(rx_end
->status
), stats
);
553 skb_add_rx_frag(skb
, 0, rxb
->page
,
554 (void *)rx_hdr
->payload
- (void *)pkt
, len
);
556 iwl_update_stats(priv
, false, fc
, len
);
557 memcpy(IEEE80211_SKB_RXCB(skb
), stats
, sizeof(*stats
));
559 ieee80211_rx(priv
->hw
, skb
);
560 priv
->alloc_rxb_page
--;
564 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
566 static void iwl3945_rx_reply_rx(struct iwl_priv
*priv
,
567 struct iwl_rx_mem_buffer
*rxb
)
569 struct ieee80211_hdr
*header
;
570 struct ieee80211_rx_status rx_status
;
571 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
572 struct iwl3945_rx_frame_stats
*rx_stats
= IWL_RX_STATS(pkt
);
573 struct iwl3945_rx_frame_hdr
*rx_hdr
= IWL_RX_HDR(pkt
);
574 struct iwl3945_rx_frame_end
*rx_end
= IWL_RX_END(pkt
);
575 u16 rx_stats_sig_avg __maybe_unused
= le16_to_cpu(rx_stats
->sig_avg
);
576 u16 rx_stats_noise_diff __maybe_unused
= le16_to_cpu(rx_stats
->noise_diff
);
580 rx_status
.mactime
= le64_to_cpu(rx_end
->timestamp
);
582 ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr
->channel
));
583 rx_status
.band
= (rx_hdr
->phy_flags
& RX_RES_PHY_FLAGS_BAND_24_MSK
) ?
584 IEEE80211_BAND_2GHZ
: IEEE80211_BAND_5GHZ
;
586 rx_status
.rate_idx
= iwl3945_hwrate_to_plcp_idx(rx_hdr
->rate
);
587 if (rx_status
.band
== IEEE80211_BAND_5GHZ
)
588 rx_status
.rate_idx
-= IWL_FIRST_OFDM_RATE
;
590 rx_status
.antenna
= (le16_to_cpu(rx_hdr
->phy_flags
) &
591 RX_RES_PHY_FLAGS_ANTENNA_MSK
) >> 4;
593 /* set the preamble flag if appropriate */
594 if (rx_hdr
->phy_flags
& RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK
)
595 rx_status
.flag
|= RX_FLAG_SHORTPRE
;
597 if ((unlikely(rx_stats
->phy_count
> 20))) {
598 IWL_DEBUG_DROP(priv
, "dsp size out of range [0,20]: %d/n",
599 rx_stats
->phy_count
);
603 if (!(rx_end
->status
& RX_RES_STATUS_NO_CRC32_ERROR
)
604 || !(rx_end
->status
& RX_RES_STATUS_NO_RXE_OVERFLOW
)) {
605 IWL_DEBUG_RX(priv
, "Bad CRC or FIFO: 0x%08X.\n", rx_end
->status
);
611 /* Convert 3945's rssi indicator to dBm */
612 rx_status
.signal
= rx_stats
->rssi
- IWL39_RSSI_OFFSET
;
614 IWL_DEBUG_STATS(priv
, "Rssi %d sig_avg %d noise_diff %d\n",
615 rx_status
.signal
, rx_stats_sig_avg
,
616 rx_stats_noise_diff
);
618 header
= (struct ieee80211_hdr
*)IWL_RX_DATA(pkt
);
620 network_packet
= iwl3945_is_network_packet(priv
, header
);
622 IWL_DEBUG_STATS_LIMIT(priv
, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n",
623 network_packet
? '*' : ' ',
624 le16_to_cpu(rx_hdr
->channel
),
625 rx_status
.signal
, rx_status
.signal
,
628 iwl_dbg_log_rx_data_frame(priv
, le16_to_cpu(rx_hdr
->len
), header
);
630 if (network_packet
) {
631 priv
->_3945
.last_beacon_time
=
632 le32_to_cpu(rx_end
->beacon_timestamp
);
633 priv
->_3945
.last_tsf
= le64_to_cpu(rx_end
->timestamp
);
634 priv
->_3945
.last_rx_rssi
= rx_status
.signal
;
637 iwl3945_pass_packet_to_mac80211(priv
, rxb
, &rx_status
);
640 int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv
*priv
,
641 struct iwl_tx_queue
*txq
,
642 dma_addr_t addr
, u16 len
, u8 reset
, u8 pad
)
646 struct iwl3945_tfd
*tfd
, *tfd_tmp
;
649 tfd_tmp
= (struct iwl3945_tfd
*)txq
->tfds
;
650 tfd
= &tfd_tmp
[q
->write_ptr
];
653 memset(tfd
, 0, sizeof(*tfd
));
655 count
= TFD_CTL_COUNT_GET(le32_to_cpu(tfd
->control_flags
));
657 if ((count
>= NUM_TFD_CHUNKS
) || (count
< 0)) {
658 IWL_ERR(priv
, "Error can not send more than %d chunks\n",
663 tfd
->tbs
[count
].addr
= cpu_to_le32(addr
);
664 tfd
->tbs
[count
].len
= cpu_to_le32(len
);
668 tfd
->control_flags
= cpu_to_le32(TFD_CTL_COUNT_SET(count
) |
669 TFD_CTL_PAD_SET(pad
));
675 * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr]
677 * Does NOT advance any indexes
679 void iwl3945_hw_txq_free_tfd(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
681 struct iwl3945_tfd
*tfd_tmp
= (struct iwl3945_tfd
*)txq
->tfds
;
682 int index
= txq
->q
.read_ptr
;
683 struct iwl3945_tfd
*tfd
= &tfd_tmp
[index
];
684 struct pci_dev
*dev
= priv
->pci_dev
;
689 counter
= TFD_CTL_COUNT_GET(le32_to_cpu(tfd
->control_flags
));
690 if (counter
> NUM_TFD_CHUNKS
) {
691 IWL_ERR(priv
, "Too many chunks: %i\n", counter
);
692 /* @todo issue fatal error, it is quite serious situation */
698 pci_unmap_single(dev
,
699 dma_unmap_addr(&txq
->meta
[index
], mapping
),
700 dma_unmap_len(&txq
->meta
[index
], len
),
703 /* unmap chunks if any */
705 for (i
= 1; i
< counter
; i
++)
706 pci_unmap_single(dev
, le32_to_cpu(tfd
->tbs
[i
].addr
),
707 le32_to_cpu(tfd
->tbs
[i
].len
), PCI_DMA_TODEVICE
);
713 skb
= txq
->txb
[txq
->q
.read_ptr
].skb
;
715 /* can be called from irqs-disabled context */
717 dev_kfree_skb_any(skb
);
718 txq
->txb
[txq
->q
.read_ptr
].skb
= NULL
;
724 * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD:
727 void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv
*priv
,
728 struct iwl_device_cmd
*cmd
,
729 struct ieee80211_tx_info
*info
,
730 struct ieee80211_hdr
*hdr
,
731 int sta_id
, int tx_id
)
733 u16 hw_value
= ieee80211_get_tx_rate(priv
->hw
, info
)->hw_value
;
734 u16 rate_index
= min(hw_value
& 0xffff, IWL_RATE_COUNT_3945
);
740 __le16 fc
= hdr
->frame_control
;
741 struct iwl3945_tx_cmd
*tx_cmd
= (struct iwl3945_tx_cmd
*)cmd
->cmd
.payload
;
743 rate
= iwl3945_rates
[rate_index
].plcp
;
744 tx_flags
= tx_cmd
->tx_flags
;
746 /* We need to figure out how to get the sta->supp_rates while
747 * in this running context */
748 rate_mask
= IWL_RATES_MASK
;
751 /* Set retry limit on DATA packets and Probe Responses*/
752 if (ieee80211_is_probe_resp(fc
))
753 data_retry_limit
= 3;
755 data_retry_limit
= IWL_DEFAULT_TX_RETRY
;
756 tx_cmd
->data_retry_limit
= data_retry_limit
;
758 if (tx_id
>= IWL_CMD_QUEUE_NUM
)
763 if (data_retry_limit
< rts_retry_limit
)
764 rts_retry_limit
= data_retry_limit
;
765 tx_cmd
->rts_retry_limit
= rts_retry_limit
;
767 if (ieee80211_is_mgmt(fc
)) {
768 switch (fc
& cpu_to_le16(IEEE80211_FCTL_STYPE
)) {
769 case cpu_to_le16(IEEE80211_STYPE_AUTH
):
770 case cpu_to_le16(IEEE80211_STYPE_DEAUTH
):
771 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ
):
772 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ
):
773 if (tx_flags
& TX_CMD_FLG_RTS_MSK
) {
774 tx_flags
&= ~TX_CMD_FLG_RTS_MSK
;
775 tx_flags
|= TX_CMD_FLG_CTS_MSK
;
784 tx_cmd
->tx_flags
= tx_flags
;
787 tx_cmd
->supp_rates
[0] =
788 ((rate_mask
& IWL_OFDM_RATES_MASK
) >> IWL_FIRST_OFDM_RATE
) & 0xFF;
791 tx_cmd
->supp_rates
[1] = (rate_mask
& 0xF);
793 IWL_DEBUG_RATE(priv
, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X "
794 "cck/ofdm mask: 0x%x/0x%x\n", sta_id
,
795 tx_cmd
->rate
, le32_to_cpu(tx_cmd
->tx_flags
),
796 tx_cmd
->supp_rates
[1], tx_cmd
->supp_rates
[0]);
799 static u8
iwl3945_sync_sta(struct iwl_priv
*priv
, int sta_id
, u16 tx_rate
)
801 unsigned long flags_spin
;
802 struct iwl_station_entry
*station
;
804 if (sta_id
== IWL_INVALID_STATION
)
805 return IWL_INVALID_STATION
;
807 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
808 station
= &priv
->stations
[sta_id
];
810 station
->sta
.sta
.modify_mask
= STA_MODIFY_TX_RATE_MSK
;
811 station
->sta
.rate_n_flags
= cpu_to_le16(tx_rate
);
812 station
->sta
.mode
= STA_CONTROL_MODIFY_MSK
;
813 iwl_send_add_sta(priv
, &station
->sta
, CMD_ASYNC
);
814 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
816 IWL_DEBUG_RATE(priv
, "SCALE sync station %d to rate %d\n",
821 static int iwl3945_set_pwr_src(struct iwl_priv
*priv
, enum iwl_pwr_src src
)
823 if (src
== IWL_PWR_SRC_VAUX
) {
824 if (pci_pme_capable(priv
->pci_dev
, PCI_D3cold
)) {
825 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
826 APMG_PS_CTRL_VAL_PWR_SRC_VAUX
,
827 ~APMG_PS_CTRL_MSK_PWR_SRC
);
829 iwl_poll_bit(priv
, CSR_GPIO_IN
,
830 CSR_GPIO_IN_VAL_VAUX_PWR_SRC
,
831 CSR_GPIO_IN_BIT_AUX_POWER
, 5000);
834 iwl_set_bits_mask_prph(priv
, APMG_PS_CTRL_REG
,
835 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN
,
836 ~APMG_PS_CTRL_MSK_PWR_SRC
);
838 iwl_poll_bit(priv
, CSR_GPIO_IN
, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC
,
839 CSR_GPIO_IN_BIT_AUX_POWER
, 5000); /* uS */
845 static int iwl3945_rx_init(struct iwl_priv
*priv
, struct iwl_rx_queue
*rxq
)
847 iwl_write_direct32(priv
, FH39_RCSR_RBD_BASE(0), rxq
->bd_dma
);
848 iwl_write_direct32(priv
, FH39_RCSR_RPTR_ADDR(0), rxq
->rb_stts_dma
);
849 iwl_write_direct32(priv
, FH39_RCSR_WPTR(0), 0);
850 iwl_write_direct32(priv
, FH39_RCSR_CONFIG(0),
851 FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE
|
852 FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE
|
853 FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN
|
854 FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128
|
855 (RX_QUEUE_SIZE_LOG
<< FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE
) |
856 FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST
|
857 (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH
) |
858 FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH
);
860 /* fake read to flush all prev I/O */
861 iwl_read_direct32(priv
, FH39_RSSR_CTRL
);
866 static int iwl3945_tx_reset(struct iwl_priv
*priv
)
870 iwl_write_prph(priv
, ALM_SCD_MODE_REG
, 0x2);
873 iwl_write_prph(priv
, ALM_SCD_ARASTAT_REG
, 0x01);
875 /* all 6 fifo are active */
876 iwl_write_prph(priv
, ALM_SCD_TXFACT_REG
, 0x3f);
878 iwl_write_prph(priv
, ALM_SCD_SBYP_MODE_1_REG
, 0x010000);
879 iwl_write_prph(priv
, ALM_SCD_SBYP_MODE_2_REG
, 0x030002);
880 iwl_write_prph(priv
, ALM_SCD_TXF4MF_REG
, 0x000004);
881 iwl_write_prph(priv
, ALM_SCD_TXF5MF_REG
, 0x000005);
883 iwl_write_direct32(priv
, FH39_TSSR_CBB_BASE
,
884 priv
->_3945
.shared_phys
);
886 iwl_write_direct32(priv
, FH39_TSSR_MSG_CONFIG
,
887 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON
|
888 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON
|
889 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B
|
890 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON
|
891 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON
|
892 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH
|
893 FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH
);
900 * iwl3945_txq_ctx_reset - Reset TX queue context
902 * Destroys all DMA structures and initialize them again
904 static int iwl3945_txq_ctx_reset(struct iwl_priv
*priv
)
907 int txq_id
, slots_num
;
909 iwl3945_hw_txq_ctx_free(priv
);
911 /* allocate tx queue structure */
912 rc
= iwl_alloc_txq_mem(priv
);
917 rc
= iwl3945_tx_reset(priv
);
922 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++) {
923 slots_num
= (txq_id
== IWL_CMD_QUEUE_NUM
) ?
924 TFD_CMD_SLOTS
: TFD_TX_CMD_SLOTS
;
925 rc
= iwl_tx_queue_init(priv
, &priv
->txq
[txq_id
], slots_num
,
928 IWL_ERR(priv
, "Tx %d queue init failed\n", txq_id
);
936 iwl3945_hw_txq_ctx_free(priv
);
942 * Start up 3945's basic functionality after it has been reset
943 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
944 * NOTE: This does not load uCode nor start the embedded processor
946 static int iwl3945_apm_init(struct iwl_priv
*priv
)
948 int ret
= iwl_apm_init(priv
);
950 /* Clear APMG (NIC's internal power management) interrupts */
951 iwl_write_prph(priv
, APMG_RTC_INT_MSK_REG
, 0x0);
952 iwl_write_prph(priv
, APMG_RTC_INT_STT_REG
, 0xFFFFFFFF);
954 /* Reset radio chip */
955 iwl_set_bits_prph(priv
, APMG_PS_CTRL_REG
, APMG_PS_CTRL_VAL_RESET_REQ
);
957 iwl_clear_bits_prph(priv
, APMG_PS_CTRL_REG
, APMG_PS_CTRL_VAL_RESET_REQ
);
962 static void iwl3945_nic_config(struct iwl_priv
*priv
)
964 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
968 spin_lock_irqsave(&priv
->lock
, flags
);
970 /* Determine HW type */
971 pci_read_config_byte(priv
->pci_dev
, PCI_REVISION_ID
, &rev_id
);
973 IWL_DEBUG_INFO(priv
, "HW Revision ID = 0x%X\n", rev_id
);
975 if (rev_id
& PCI_CFG_REV_ID_BIT_RTP
)
976 IWL_DEBUG_INFO(priv
, "RTP type\n");
977 else if (rev_id
& PCI_CFG_REV_ID_BIT_BASIC_SKU
) {
978 IWL_DEBUG_INFO(priv
, "3945 RADIO-MB type\n");
979 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
980 CSR39_HW_IF_CONFIG_REG_BIT_3945_MB
);
982 IWL_DEBUG_INFO(priv
, "3945 RADIO-MM type\n");
983 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
984 CSR39_HW_IF_CONFIG_REG_BIT_3945_MM
);
987 if (EEPROM_SKU_CAP_OP_MODE_MRC
== eeprom
->sku_cap
) {
988 IWL_DEBUG_INFO(priv
, "SKU OP mode is mrc\n");
989 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
990 CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC
);
992 IWL_DEBUG_INFO(priv
, "SKU OP mode is basic\n");
994 if ((eeprom
->board_revision
& 0xF0) == 0xD0) {
995 IWL_DEBUG_INFO(priv
, "3945ABG revision is 0x%X\n",
996 eeprom
->board_revision
);
997 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
998 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE
);
1000 IWL_DEBUG_INFO(priv
, "3945ABG revision is 0x%X\n",
1001 eeprom
->board_revision
);
1002 iwl_clear_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1003 CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE
);
1006 if (eeprom
->almgor_m_version
<= 1) {
1007 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1008 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A
);
1009 IWL_DEBUG_INFO(priv
, "Card M type A version is 0x%X\n",
1010 eeprom
->almgor_m_version
);
1012 IWL_DEBUG_INFO(priv
, "Card M type B version is 0x%X\n",
1013 eeprom
->almgor_m_version
);
1014 iwl_set_bit(priv
, CSR_HW_IF_CONFIG_REG
,
1015 CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B
);
1017 spin_unlock_irqrestore(&priv
->lock
, flags
);
1019 if (eeprom
->sku_cap
& EEPROM_SKU_CAP_SW_RF_KILL_ENABLE
)
1020 IWL_DEBUG_RF_KILL(priv
, "SW RF KILL supported in EEPROM.\n");
1022 if (eeprom
->sku_cap
& EEPROM_SKU_CAP_HW_RF_KILL_ENABLE
)
1023 IWL_DEBUG_RF_KILL(priv
, "HW RF KILL supported in EEPROM.\n");
1026 int iwl3945_hw_nic_init(struct iwl_priv
*priv
)
1029 unsigned long flags
;
1030 struct iwl_rx_queue
*rxq
= &priv
->rxq
;
1032 spin_lock_irqsave(&priv
->lock
, flags
);
1033 priv
->cfg
->ops
->lib
->apm_ops
.init(priv
);
1034 spin_unlock_irqrestore(&priv
->lock
, flags
);
1036 rc
= priv
->cfg
->ops
->lib
->apm_ops
.set_pwr_src(priv
, IWL_PWR_SRC_VMAIN
);
1040 priv
->cfg
->ops
->lib
->apm_ops
.config(priv
);
1042 /* Allocate the RX queue, or reset if it is already allocated */
1044 rc
= iwl_rx_queue_alloc(priv
);
1046 IWL_ERR(priv
, "Unable to initialize Rx queue\n");
1050 iwl3945_rx_queue_reset(priv
, rxq
);
1052 iwl3945_rx_replenish(priv
);
1054 iwl3945_rx_init(priv
, rxq
);
1057 /* Look at using this instead:
1058 rxq->need_update = 1;
1059 iwl_rx_queue_update_write_ptr(priv, rxq);
1062 iwl_write_direct32(priv
, FH39_RCSR_WPTR(0), rxq
->write
& ~7);
1064 rc
= iwl3945_txq_ctx_reset(priv
);
1068 set_bit(STATUS_INIT
, &priv
->status
);
1074 * iwl3945_hw_txq_ctx_free - Free TXQ Context
1076 * Destroy all TX DMA queues and structures
1078 void iwl3945_hw_txq_ctx_free(struct iwl_priv
*priv
)
1084 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
;
1086 if (txq_id
== IWL_CMD_QUEUE_NUM
)
1087 iwl_cmd_queue_free(priv
);
1089 iwl_tx_queue_free(priv
, txq_id
);
1091 /* free tx queue structure */
1092 iwl_free_txq_mem(priv
);
1095 void iwl3945_hw_txq_ctx_stop(struct iwl_priv
*priv
)
1100 iwl_write_prph(priv
, ALM_SCD_MODE_REG
, 0);
1101 iwl_write_prph(priv
, ALM_SCD_TXFACT_REG
, 0);
1103 /* reset TFD queues */
1104 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++) {
1105 iwl_write_direct32(priv
, FH39_TCSR_CONFIG(txq_id
), 0x0);
1106 iwl_poll_direct_bit(priv
, FH39_TSSR_TX_STATUS
,
1107 FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id
),
1111 iwl3945_hw_txq_ctx_free(priv
);
1115 * iwl3945_hw_reg_adjust_power_by_temp
1116 * return index delta into power gain settings table
1118 static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading
, int old_reading
)
1120 return (new_reading
- old_reading
) * (-11) / 100;
1124 * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range
1126 static inline int iwl3945_hw_reg_temp_out_of_range(int temperature
)
1128 return ((temperature
< -260) || (temperature
> 25)) ? 1 : 0;
1131 int iwl3945_hw_get_temperature(struct iwl_priv
*priv
)
1133 return iwl_read32(priv
, CSR_UCODE_DRV_GP2
);
1137 * iwl3945_hw_reg_txpower_get_temperature
1138 * get the current temperature by reading from NIC
1140 static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv
*priv
)
1142 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1145 temperature
= iwl3945_hw_get_temperature(priv
);
1147 /* driver's okay range is -260 to +25.
1148 * human readable okay range is 0 to +285 */
1149 IWL_DEBUG_INFO(priv
, "Temperature: %d\n", temperature
+ IWL_TEMP_CONVERT
);
1151 /* handle insane temp reading */
1152 if (iwl3945_hw_reg_temp_out_of_range(temperature
)) {
1153 IWL_ERR(priv
, "Error bad temperature value %d\n", temperature
);
1155 /* if really really hot(?),
1156 * substitute the 3rd band/group's temp measured at factory */
1157 if (priv
->last_temperature
> 100)
1158 temperature
= eeprom
->groups
[2].temperature
;
1159 else /* else use most recent "sane" value from driver */
1160 temperature
= priv
->last_temperature
;
1163 return temperature
; /* raw, not "human readable" */
1166 /* Adjust Txpower only if temperature variance is greater than threshold.
1168 * Both are lower than older versions' 9 degrees */
1169 #define IWL_TEMPERATURE_LIMIT_TIMER 6
1172 * is_temp_calib_needed - determines if new calibration is needed
1174 * records new temperature in tx_mgr->temperature.
1175 * replaces tx_mgr->last_temperature *only* if calib needed
1176 * (assumes caller will actually do the calibration!). */
1177 static int is_temp_calib_needed(struct iwl_priv
*priv
)
1181 priv
->temperature
= iwl3945_hw_reg_txpower_get_temperature(priv
);
1182 temp_diff
= priv
->temperature
- priv
->last_temperature
;
1184 /* get absolute value */
1185 if (temp_diff
< 0) {
1186 IWL_DEBUG_POWER(priv
, "Getting cooler, delta %d,\n", temp_diff
);
1187 temp_diff
= -temp_diff
;
1188 } else if (temp_diff
== 0)
1189 IWL_DEBUG_POWER(priv
, "Same temp,\n");
1191 IWL_DEBUG_POWER(priv
, "Getting warmer, delta %d,\n", temp_diff
);
1193 /* if we don't need calibration, *don't* update last_temperature */
1194 if (temp_diff
< IWL_TEMPERATURE_LIMIT_TIMER
) {
1195 IWL_DEBUG_POWER(priv
, "Timed thermal calib not needed\n");
1199 IWL_DEBUG_POWER(priv
, "Timed thermal calib needed\n");
1201 /* assume that caller will actually do calib ...
1202 * update the "last temperature" value */
1203 priv
->last_temperature
= priv
->temperature
;
1207 #define IWL_MAX_GAIN_ENTRIES 78
1208 #define IWL_CCK_FROM_OFDM_POWER_DIFF -5
1209 #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10)
1211 /* radio and DSP power table, each step is 1/2 dB.
1212 * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */
1213 static struct iwl3945_tx_power power_gain_table
[2][IWL_MAX_GAIN_ENTRIES
] = {
1215 {251, 127}, /* 2.4 GHz, highest power */
1292 {3, 95} }, /* 2.4 GHz, lowest power */
1294 {251, 127}, /* 5.x GHz, highest power */
1371 {3, 120} } /* 5.x GHz, lowest power */
1374 static inline u8
iwl3945_hw_reg_fix_power_index(int index
)
1378 if (index
>= IWL_MAX_GAIN_ENTRIES
)
1379 return IWL_MAX_GAIN_ENTRIES
- 1;
1383 /* Kick off thermal recalibration check every 60 seconds */
1384 #define REG_RECALIB_PERIOD (60)
1387 * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests
1389 * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK)
1390 * or 6 Mbit (OFDM) rates.
1392 static void iwl3945_hw_reg_set_scan_power(struct iwl_priv
*priv
, u32 scan_tbl_index
,
1393 s32 rate_index
, const s8
*clip_pwrs
,
1394 struct iwl_channel_info
*ch_info
,
1397 struct iwl3945_scan_power_info
*scan_power_info
;
1401 scan_power_info
= &ch_info
->scan_pwr_info
[scan_tbl_index
];
1403 /* use this channel group's 6Mbit clipping/saturation pwr,
1404 * but cap at regulatory scan power restriction (set during init
1405 * based on eeprom channel data) for this channel. */
1406 power
= min(ch_info
->scan_power
, clip_pwrs
[IWL_RATE_6M_INDEX_TABLE
]);
1408 /* further limit to user's max power preference.
1409 * FIXME: Other spectrum management power limitations do not
1410 * seem to apply?? */
1411 power
= min(power
, priv
->tx_power_user_lmt
);
1412 scan_power_info
->requested_power
= power
;
1414 /* find difference between new scan *power* and current "normal"
1415 * Tx *power* for 6Mb. Use this difference (x2) to adjust the
1416 * current "normal" temperature-compensated Tx power *index* for
1417 * this rate (1Mb or 6Mb) to yield new temp-compensated scan power
1419 power_index
= ch_info
->power_info
[rate_index
].power_table_index
1420 - (power
- ch_info
->power_info
1421 [IWL_RATE_6M_INDEX_TABLE
].requested_power
) * 2;
1423 /* store reference index that we use when adjusting *all* scan
1424 * powers. So we can accommodate user (all channel) or spectrum
1425 * management (single channel) power changes "between" temperature
1426 * feedback compensation procedures.
1427 * don't force fit this reference index into gain table; it may be a
1428 * negative number. This will help avoid errors when we're at
1429 * the lower bounds (highest gains, for warmest temperatures)
1432 /* don't exceed table bounds for "real" setting */
1433 power_index
= iwl3945_hw_reg_fix_power_index(power_index
);
1435 scan_power_info
->power_table_index
= power_index
;
1436 scan_power_info
->tpc
.tx_gain
=
1437 power_gain_table
[band_index
][power_index
].tx_gain
;
1438 scan_power_info
->tpc
.dsp_atten
=
1439 power_gain_table
[band_index
][power_index
].dsp_atten
;
1443 * iwl3945_send_tx_power - fill in Tx Power command with gain settings
1445 * Configures power settings for all rates for the current channel,
1446 * using values from channel info struct, and send to NIC
1448 static int iwl3945_send_tx_power(struct iwl_priv
*priv
)
1451 const struct iwl_channel_info
*ch_info
= NULL
;
1452 struct iwl3945_txpowertable_cmd txpower
= {
1453 .channel
= priv
->active_rxon
.channel
,
1456 txpower
.band
= (priv
->band
== IEEE80211_BAND_5GHZ
) ? 0 : 1;
1457 ch_info
= iwl_get_channel_info(priv
,
1459 le16_to_cpu(priv
->active_rxon
.channel
));
1462 "Failed to get channel info for channel %d [%d]\n",
1463 le16_to_cpu(priv
->active_rxon
.channel
), priv
->band
);
1467 if (!is_channel_valid(ch_info
)) {
1468 IWL_DEBUG_POWER(priv
, "Not calling TX_PWR_TABLE_CMD on "
1469 "non-Tx channel.\n");
1473 /* fill cmd with power settings for all rates for current channel */
1474 /* Fill OFDM rate */
1475 for (rate_idx
= IWL_FIRST_OFDM_RATE
, i
= 0;
1476 rate_idx
<= IWL39_LAST_OFDM_RATE
; rate_idx
++, i
++) {
1478 txpower
.power
[i
].tpc
= ch_info
->power_info
[i
].tpc
;
1479 txpower
.power
[i
].rate
= iwl3945_rates
[rate_idx
].plcp
;
1481 IWL_DEBUG_POWER(priv
, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1482 le16_to_cpu(txpower
.channel
),
1484 txpower
.power
[i
].tpc
.tx_gain
,
1485 txpower
.power
[i
].tpc
.dsp_atten
,
1486 txpower
.power
[i
].rate
);
1488 /* Fill CCK rates */
1489 for (rate_idx
= IWL_FIRST_CCK_RATE
;
1490 rate_idx
<= IWL_LAST_CCK_RATE
; rate_idx
++, i
++) {
1491 txpower
.power
[i
].tpc
= ch_info
->power_info
[i
].tpc
;
1492 txpower
.power
[i
].rate
= iwl3945_rates
[rate_idx
].plcp
;
1494 IWL_DEBUG_POWER(priv
, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n",
1495 le16_to_cpu(txpower
.channel
),
1497 txpower
.power
[i
].tpc
.tx_gain
,
1498 txpower
.power
[i
].tpc
.dsp_atten
,
1499 txpower
.power
[i
].rate
);
1502 return iwl_send_cmd_pdu(priv
, REPLY_TX_PWR_TABLE_CMD
,
1503 sizeof(struct iwl3945_txpowertable_cmd
),
1509 * iwl3945_hw_reg_set_new_power - Configures power tables at new levels
1510 * @ch_info: Channel to update. Uses power_info.requested_power.
1512 * Replace requested_power and base_power_index ch_info fields for
1515 * Called if user or spectrum management changes power preferences.
1516 * Takes into account h/w and modulation limitations (clip power).
1518 * This does *not* send anything to NIC, just sets up ch_info for one channel.
1520 * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to
1521 * properly fill out the scan powers, and actual h/w gain settings,
1522 * and send changes to NIC
1524 static int iwl3945_hw_reg_set_new_power(struct iwl_priv
*priv
,
1525 struct iwl_channel_info
*ch_info
)
1527 struct iwl3945_channel_power_info
*power_info
;
1528 int power_changed
= 0;
1530 const s8
*clip_pwrs
;
1533 /* Get this chnlgrp's rate-to-max/clip-powers table */
1534 clip_pwrs
= priv
->_3945
.clip_groups
[ch_info
->group_index
].clip_powers
;
1536 /* Get this channel's rate-to-current-power settings table */
1537 power_info
= ch_info
->power_info
;
1539 /* update OFDM Txpower settings */
1540 for (i
= IWL_RATE_6M_INDEX_TABLE
; i
<= IWL_RATE_54M_INDEX_TABLE
;
1541 i
++, ++power_info
) {
1544 /* limit new power to be no more than h/w capability */
1545 power
= min(ch_info
->curr_txpow
, clip_pwrs
[i
]);
1546 if (power
== power_info
->requested_power
)
1549 /* find difference between old and new requested powers,
1550 * update base (non-temp-compensated) power index */
1551 delta_idx
= (power
- power_info
->requested_power
) * 2;
1552 power_info
->base_power_index
-= delta_idx
;
1554 /* save new requested power value */
1555 power_info
->requested_power
= power
;
1560 /* update CCK Txpower settings, based on OFDM 12M setting ...
1561 * ... all CCK power settings for a given channel are the *same*. */
1562 if (power_changed
) {
1564 ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
].
1565 requested_power
+ IWL_CCK_FROM_OFDM_POWER_DIFF
;
1567 /* do all CCK rates' iwl3945_channel_power_info structures */
1568 for (i
= IWL_RATE_1M_INDEX_TABLE
; i
<= IWL_RATE_11M_INDEX_TABLE
; i
++) {
1569 power_info
->requested_power
= power
;
1570 power_info
->base_power_index
=
1571 ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
].
1572 base_power_index
+ IWL_CCK_FROM_OFDM_INDEX_DIFF
;
1581 * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel
1583 * NOTE: Returned power limit may be less (but not more) than requested,
1584 * based strictly on regulatory (eeprom and spectrum mgt) limitations
1585 * (no consideration for h/w clipping limitations).
1587 static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info
*ch_info
)
1592 /* if we're using TGd limits, use lower of TGd or EEPROM */
1593 if (ch_info
->tgd_data
.max_power
!= 0)
1594 max_power
= min(ch_info
->tgd_data
.max_power
,
1595 ch_info
->eeprom
.max_power_avg
);
1597 /* else just use EEPROM limits */
1600 max_power
= ch_info
->eeprom
.max_power_avg
;
1602 return min(max_power
, ch_info
->max_power_avg
);
1606 * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature
1608 * Compensate txpower settings of *all* channels for temperature.
1609 * This only accounts for the difference between current temperature
1610 * and the factory calibration temperatures, and bases the new settings
1611 * on the channel's base_power_index.
1613 * If RxOn is "associated", this sends the new Txpower to NIC!
1615 static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv
*priv
)
1617 struct iwl_channel_info
*ch_info
= NULL
;
1618 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1620 const s8
*clip_pwrs
; /* array of h/w max power levels for each rate */
1626 int temperature
= priv
->temperature
;
1628 if (priv
->disable_tx_power_cal
||
1629 test_bit(STATUS_SCANNING
, &priv
->status
)) {
1630 /* do not perform tx power calibration */
1633 /* set up new Tx power info for each and every channel, 2.4 and 5.x */
1634 for (i
= 0; i
< priv
->channel_count
; i
++) {
1635 ch_info
= &priv
->channel_info
[i
];
1636 a_band
= is_channel_a_band(ch_info
);
1638 /* Get this chnlgrp's factory calibration temperature */
1639 ref_temp
= (s16
)eeprom
->groups
[ch_info
->group_index
].
1642 /* get power index adjustment based on current and factory
1644 delta_index
= iwl3945_hw_reg_adjust_power_by_temp(temperature
,
1647 /* set tx power value for all rates, OFDM and CCK */
1648 for (rate_index
= 0; rate_index
< IWL_RATE_COUNT
;
1651 ch_info
->power_info
[rate_index
].base_power_index
;
1653 /* temperature compensate */
1654 power_idx
+= delta_index
;
1656 /* stay within table range */
1657 power_idx
= iwl3945_hw_reg_fix_power_index(power_idx
);
1658 ch_info
->power_info
[rate_index
].
1659 power_table_index
= (u8
) power_idx
;
1660 ch_info
->power_info
[rate_index
].tpc
=
1661 power_gain_table
[a_band
][power_idx
];
1664 /* Get this chnlgrp's rate-to-max/clip-powers table */
1665 clip_pwrs
= priv
->_3945
.clip_groups
[ch_info
->group_index
].clip_powers
;
1667 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
1668 for (scan_tbl_index
= 0;
1669 scan_tbl_index
< IWL_NUM_SCAN_RATES
; scan_tbl_index
++) {
1670 s32 actual_index
= (scan_tbl_index
== 0) ?
1671 IWL_RATE_1M_INDEX_TABLE
: IWL_RATE_6M_INDEX_TABLE
;
1672 iwl3945_hw_reg_set_scan_power(priv
, scan_tbl_index
,
1673 actual_index
, clip_pwrs
,
1678 /* send Txpower command for current channel to ucode */
1679 return priv
->cfg
->ops
->lib
->send_tx_power(priv
);
1682 int iwl3945_hw_reg_set_txpower(struct iwl_priv
*priv
, s8 power
)
1684 struct iwl_channel_info
*ch_info
;
1689 if (priv
->tx_power_user_lmt
== power
) {
1690 IWL_DEBUG_POWER(priv
, "Requested Tx power same as current "
1691 "limit: %ddBm.\n", power
);
1695 IWL_DEBUG_POWER(priv
, "Setting upper limit clamp to %ddBm.\n", power
);
1696 priv
->tx_power_user_lmt
= power
;
1698 /* set up new Tx powers for each and every channel, 2.4 and 5.x */
1700 for (i
= 0; i
< priv
->channel_count
; i
++) {
1701 ch_info
= &priv
->channel_info
[i
];
1702 a_band
= is_channel_a_band(ch_info
);
1704 /* find minimum power of all user and regulatory constraints
1705 * (does not consider h/w clipping limitations) */
1706 max_power
= iwl3945_hw_reg_get_ch_txpower_limit(ch_info
);
1707 max_power
= min(power
, max_power
);
1708 if (max_power
!= ch_info
->curr_txpow
) {
1709 ch_info
->curr_txpow
= max_power
;
1711 /* this considers the h/w clipping limitations */
1712 iwl3945_hw_reg_set_new_power(priv
, ch_info
);
1716 /* update txpower settings for all channels,
1717 * send to NIC if associated. */
1718 is_temp_calib_needed(priv
);
1719 iwl3945_hw_reg_comp_txpower_temp(priv
);
1724 static int iwl3945_send_rxon_assoc(struct iwl_priv
*priv
)
1727 struct iwl_rx_packet
*pkt
;
1728 struct iwl3945_rxon_assoc_cmd rxon_assoc
;
1729 struct iwl_host_cmd cmd
= {
1730 .id
= REPLY_RXON_ASSOC
,
1731 .len
= sizeof(rxon_assoc
),
1732 .flags
= CMD_WANT_SKB
,
1733 .data
= &rxon_assoc
,
1735 const struct iwl_rxon_cmd
*rxon1
= &priv
->staging_rxon
;
1736 const struct iwl_rxon_cmd
*rxon2
= &priv
->active_rxon
;
1738 if ((rxon1
->flags
== rxon2
->flags
) &&
1739 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
1740 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
1741 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
1742 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
1746 rxon_assoc
.flags
= priv
->staging_rxon
.flags
;
1747 rxon_assoc
.filter_flags
= priv
->staging_rxon
.filter_flags
;
1748 rxon_assoc
.ofdm_basic_rates
= priv
->staging_rxon
.ofdm_basic_rates
;
1749 rxon_assoc
.cck_basic_rates
= priv
->staging_rxon
.cck_basic_rates
;
1750 rxon_assoc
.reserved
= 0;
1752 rc
= iwl_send_cmd_sync(priv
, &cmd
);
1756 pkt
= (struct iwl_rx_packet
*)cmd
.reply_page
;
1757 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
1758 IWL_ERR(priv
, "Bad return from REPLY_RXON_ASSOC command\n");
1762 iwl_free_pages(priv
, cmd
.reply_page
);
1768 * iwl3945_commit_rxon - commit staging_rxon to hardware
1770 * The RXON command in staging_rxon is committed to the hardware and
1771 * the active_rxon structure is updated with the new data. This
1772 * function correctly transitions out of the RXON_ASSOC_MSK state if
1773 * a HW tune is required based on the RXON structure changes.
1775 static int iwl3945_commit_rxon(struct iwl_priv
*priv
)
1777 /* cast away the const for active_rxon in this function */
1778 struct iwl3945_rxon_cmd
*active_rxon
= (void *)&priv
->active_rxon
;
1779 struct iwl3945_rxon_cmd
*staging_rxon
= (void *)&priv
->staging_rxon
;
1782 !!(priv
->staging_rxon
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
1784 if (!iwl_is_alive(priv
))
1787 /* always get timestamp with Rx frame */
1788 staging_rxon
->flags
|= RXON_FLG_TSF2HOST_MSK
;
1790 /* select antenna */
1791 staging_rxon
->flags
&=
1792 ~(RXON_FLG_DIS_DIV_MSK
| RXON_FLG_ANT_SEL_MSK
);
1793 staging_rxon
->flags
|= iwl3945_get_antenna_flags(priv
);
1795 rc
= iwl_check_rxon_cmd(priv
);
1797 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
1801 /* If we don't need to send a full RXON, we can use
1802 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1803 * and other flags for the current radio configuration. */
1804 if (!iwl_full_rxon_required(priv
)) {
1805 rc
= iwl_send_rxon_assoc(priv
);
1807 IWL_ERR(priv
, "Error setting RXON_ASSOC "
1808 "configuration (%d).\n", rc
);
1812 memcpy(active_rxon
, staging_rxon
, sizeof(*active_rxon
));
1817 /* If we are currently associated and the new config requires
1818 * an RXON_ASSOC and the new config wants the associated mask enabled,
1819 * we must clear the associated from the active configuration
1820 * before we apply the new config */
1821 if (iwl_is_associated(priv
) && new_assoc
) {
1822 IWL_DEBUG_INFO(priv
, "Toggling associated bit on current RXON\n");
1823 active_rxon
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1826 * reserved4 and 5 could have been filled by the iwlcore code.
1827 * Let's clear them before pushing to the 3945.
1829 active_rxon
->reserved4
= 0;
1830 active_rxon
->reserved5
= 0;
1831 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1832 sizeof(struct iwl3945_rxon_cmd
),
1833 &priv
->active_rxon
);
1835 /* If the mask clearing failed then we set
1836 * active_rxon back to what it was previously */
1838 active_rxon
->filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1839 IWL_ERR(priv
, "Error clearing ASSOC_MSK on current "
1840 "configuration (%d).\n", rc
);
1843 iwl_clear_ucode_stations(priv
);
1844 iwl_restore_stations(priv
);
1847 IWL_DEBUG_INFO(priv
, "Sending RXON\n"
1848 "* with%s RXON_FILTER_ASSOC_MSK\n"
1851 (new_assoc
? "" : "out"),
1852 le16_to_cpu(staging_rxon
->channel
),
1853 staging_rxon
->bssid_addr
);
1856 * reserved4 and 5 could have been filled by the iwlcore code.
1857 * Let's clear them before pushing to the 3945.
1859 staging_rxon
->reserved4
= 0;
1860 staging_rxon
->reserved5
= 0;
1862 iwl_set_rxon_hwcrypto(priv
, !iwl3945_mod_params
.sw_crypto
);
1864 /* Apply the new configuration */
1865 rc
= iwl_send_cmd_pdu(priv
, REPLY_RXON
,
1866 sizeof(struct iwl3945_rxon_cmd
),
1869 IWL_ERR(priv
, "Error setting new configuration (%d).\n", rc
);
1873 memcpy(active_rxon
, staging_rxon
, sizeof(*active_rxon
));
1876 iwl_clear_ucode_stations(priv
);
1877 iwl_restore_stations(priv
);
1880 /* If we issue a new RXON command which required a tune then we must
1881 * send a new TXPOWER command or we won't be able to Tx any frames */
1882 rc
= priv
->cfg
->ops
->lib
->send_tx_power(priv
);
1884 IWL_ERR(priv
, "Error setting Tx power (%d).\n", rc
);
1888 /* Init the hardware's rate fallback order based on the band */
1889 rc
= iwl3945_init_hw_rate_table(priv
);
1891 IWL_ERR(priv
, "Error setting HW rate table: %02X\n", rc
);
1899 * iwl3945_reg_txpower_periodic - called when time to check our temperature.
1901 * -- reset periodic timer
1902 * -- see if temp has changed enough to warrant re-calibration ... if so:
1903 * -- correct coeffs for temp (can reset temp timer)
1904 * -- save this temp as "last",
1905 * -- send new set of gain settings to NIC
1906 * NOTE: This should continue working, even when we're not associated,
1907 * so we can keep our internal table of scan powers current. */
1908 void iwl3945_reg_txpower_periodic(struct iwl_priv
*priv
)
1910 /* This will kick in the "brute force"
1911 * iwl3945_hw_reg_comp_txpower_temp() below */
1912 if (!is_temp_calib_needed(priv
))
1915 /* Set up a new set of temp-adjusted TxPowers, send to NIC.
1916 * This is based *only* on current temperature,
1917 * ignoring any previous power measurements */
1918 iwl3945_hw_reg_comp_txpower_temp(priv
);
1921 queue_delayed_work(priv
->workqueue
,
1922 &priv
->_3945
.thermal_periodic
, REG_RECALIB_PERIOD
* HZ
);
1925 static void iwl3945_bg_reg_txpower_periodic(struct work_struct
*work
)
1927 struct iwl_priv
*priv
= container_of(work
, struct iwl_priv
,
1928 _3945
.thermal_periodic
.work
);
1930 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1933 mutex_lock(&priv
->mutex
);
1934 iwl3945_reg_txpower_periodic(priv
);
1935 mutex_unlock(&priv
->mutex
);
1939 * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4)
1942 * This function is used when initializing channel-info structs.
1944 * NOTE: These channel groups do *NOT* match the bands above!
1945 * These channel groups are based on factory-tested channels;
1946 * on A-band, EEPROM's "group frequency" entries represent the top
1947 * channel in each group 1-4. Group 5 All B/G channels are in group 0.
1949 static u16
iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv
*priv
,
1950 const struct iwl_channel_info
*ch_info
)
1952 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1953 struct iwl3945_eeprom_txpower_group
*ch_grp
= &eeprom
->groups
[0];
1955 u16 group_index
= 0; /* based on factory calib frequencies */
1958 /* Find the group index for the channel ... don't use index 1(?) */
1959 if (is_channel_a_band(ch_info
)) {
1960 for (group
= 1; group
< 5; group
++) {
1961 grp_channel
= ch_grp
[group
].group_channel
;
1962 if (ch_info
->channel
<= grp_channel
) {
1963 group_index
= group
;
1967 /* group 4 has a few channels *above* its factory cal freq */
1971 group_index
= 0; /* 2.4 GHz, group 0 */
1973 IWL_DEBUG_POWER(priv
, "Chnl %d mapped to grp %d\n", ch_info
->channel
,
1979 * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index
1981 * Interpolate to get nominal (i.e. at factory calibration temperature) index
1982 * into radio/DSP gain settings table for requested power.
1984 static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv
*priv
,
1986 s32 setting_index
, s32
*new_index
)
1988 const struct iwl3945_eeprom_txpower_group
*chnl_grp
= NULL
;
1989 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
1991 s32 power
= 2 * requested_power
;
1993 const struct iwl3945_eeprom_txpower_sample
*samples
;
1998 chnl_grp
= &eeprom
->groups
[setting_index
];
1999 samples
= chnl_grp
->samples
;
2000 for (i
= 0; i
< 5; i
++) {
2001 if (power
== samples
[i
].power
) {
2002 *new_index
= samples
[i
].gain_index
;
2007 if (power
> samples
[1].power
) {
2010 } else if (power
> samples
[2].power
) {
2013 } else if (power
> samples
[3].power
) {
2021 denominator
= (s32
) samples
[index1
].power
- (s32
) samples
[index0
].power
;
2022 if (denominator
== 0)
2024 gains0
= (s32
) samples
[index0
].gain_index
* (1 << 19);
2025 gains1
= (s32
) samples
[index1
].gain_index
* (1 << 19);
2026 res
= gains0
+ (gains1
- gains0
) *
2027 ((s32
) power
- (s32
) samples
[index0
].power
) / denominator
+
2029 *new_index
= res
>> 19;
2033 static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv
*priv
)
2037 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2038 const struct iwl3945_eeprom_txpower_group
*group
;
2040 IWL_DEBUG_POWER(priv
, "Initializing factory calib info from EEPROM\n");
2042 for (i
= 0; i
< IWL_NUM_TX_CALIB_GROUPS
; i
++) {
2043 s8
*clip_pwrs
; /* table of power levels for each rate */
2044 s8 satur_pwr
; /* saturation power for each chnl group */
2045 group
= &eeprom
->groups
[i
];
2047 /* sanity check on factory saturation power value */
2048 if (group
->saturation_power
< 40) {
2049 IWL_WARN(priv
, "Error: saturation power is %d, "
2050 "less than minimum expected 40\n",
2051 group
->saturation_power
);
2056 * Derive requested power levels for each rate, based on
2057 * hardware capabilities (saturation power for band).
2058 * Basic value is 3dB down from saturation, with further
2059 * power reductions for highest 3 data rates. These
2060 * backoffs provide headroom for high rate modulation
2061 * power peaks, without too much distortion (clipping).
2063 /* we'll fill in this array with h/w max power levels */
2064 clip_pwrs
= (s8
*) priv
->_3945
.clip_groups
[i
].clip_powers
;
2066 /* divide factory saturation power by 2 to find -3dB level */
2067 satur_pwr
= (s8
) (group
->saturation_power
>> 1);
2069 /* fill in channel group's nominal powers for each rate */
2070 for (rate_index
= 0;
2071 rate_index
< IWL_RATE_COUNT_3945
; rate_index
++, clip_pwrs
++) {
2072 switch (rate_index
) {
2073 case IWL_RATE_36M_INDEX_TABLE
:
2074 if (i
== 0) /* B/G */
2075 *clip_pwrs
= satur_pwr
;
2077 *clip_pwrs
= satur_pwr
- 5;
2079 case IWL_RATE_48M_INDEX_TABLE
:
2081 *clip_pwrs
= satur_pwr
- 7;
2083 *clip_pwrs
= satur_pwr
- 10;
2085 case IWL_RATE_54M_INDEX_TABLE
:
2087 *clip_pwrs
= satur_pwr
- 9;
2089 *clip_pwrs
= satur_pwr
- 12;
2092 *clip_pwrs
= satur_pwr
;
2100 * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM
2102 * Second pass (during init) to set up priv->channel_info
2104 * Set up Tx-power settings in our channel info database for each VALID
2105 * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values
2106 * and current temperature.
2108 * Since this is based on current temperature (at init time), these values may
2109 * not be valid for very long, but it gives us a starting/default point,
2110 * and allows us to active (i.e. using Tx) scan.
2112 * This does *not* write values to NIC, just sets up our internal table.
2114 int iwl3945_txpower_set_from_eeprom(struct iwl_priv
*priv
)
2116 struct iwl_channel_info
*ch_info
= NULL
;
2117 struct iwl3945_channel_power_info
*pwr_info
;
2118 struct iwl3945_eeprom
*eeprom
= (struct iwl3945_eeprom
*)priv
->eeprom
;
2122 const s8
*clip_pwrs
; /* array of power levels for each rate */
2125 u8 pwr_index
, base_pwr_index
, a_band
;
2129 /* save temperature reference,
2130 * so we can determine next time to calibrate */
2131 temperature
= iwl3945_hw_reg_txpower_get_temperature(priv
);
2132 priv
->last_temperature
= temperature
;
2134 iwl3945_hw_reg_init_channel_groups(priv
);
2136 /* initialize Tx power info for each and every channel, 2.4 and 5.x */
2137 for (i
= 0, ch_info
= priv
->channel_info
; i
< priv
->channel_count
;
2139 a_band
= is_channel_a_band(ch_info
);
2140 if (!is_channel_valid(ch_info
))
2143 /* find this channel's channel group (*not* "band") index */
2144 ch_info
->group_index
=
2145 iwl3945_hw_reg_get_ch_grp_index(priv
, ch_info
);
2147 /* Get this chnlgrp's rate->max/clip-powers table */
2148 clip_pwrs
= priv
->_3945
.clip_groups
[ch_info
->group_index
].clip_powers
;
2150 /* calculate power index *adjustment* value according to
2151 * diff between current temperature and factory temperature */
2152 delta_index
= iwl3945_hw_reg_adjust_power_by_temp(temperature
,
2153 eeprom
->groups
[ch_info
->group_index
].
2156 IWL_DEBUG_POWER(priv
, "Delta index for channel %d: %d [%d]\n",
2157 ch_info
->channel
, delta_index
, temperature
+
2160 /* set tx power value for all OFDM rates */
2161 for (rate_index
= 0; rate_index
< IWL_OFDM_RATES
;
2163 s32
uninitialized_var(power_idx
);
2166 /* use channel group's clip-power table,
2167 * but don't exceed channel's max power */
2168 s8 pwr
= min(ch_info
->max_power_avg
,
2169 clip_pwrs
[rate_index
]);
2171 pwr_info
= &ch_info
->power_info
[rate_index
];
2173 /* get base (i.e. at factory-measured temperature)
2174 * power table index for this rate's power */
2175 rc
= iwl3945_hw_reg_get_matched_power_index(priv
, pwr
,
2176 ch_info
->group_index
,
2179 IWL_ERR(priv
, "Invalid power index\n");
2182 pwr_info
->base_power_index
= (u8
) power_idx
;
2184 /* temperature compensate */
2185 power_idx
+= delta_index
;
2187 /* stay within range of gain table */
2188 power_idx
= iwl3945_hw_reg_fix_power_index(power_idx
);
2190 /* fill 1 OFDM rate's iwl3945_channel_power_info struct */
2191 pwr_info
->requested_power
= pwr
;
2192 pwr_info
->power_table_index
= (u8
) power_idx
;
2193 pwr_info
->tpc
.tx_gain
=
2194 power_gain_table
[a_band
][power_idx
].tx_gain
;
2195 pwr_info
->tpc
.dsp_atten
=
2196 power_gain_table
[a_band
][power_idx
].dsp_atten
;
2199 /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/
2200 pwr_info
= &ch_info
->power_info
[IWL_RATE_12M_INDEX_TABLE
];
2201 power
= pwr_info
->requested_power
+
2202 IWL_CCK_FROM_OFDM_POWER_DIFF
;
2203 pwr_index
= pwr_info
->power_table_index
+
2204 IWL_CCK_FROM_OFDM_INDEX_DIFF
;
2205 base_pwr_index
= pwr_info
->base_power_index
+
2206 IWL_CCK_FROM_OFDM_INDEX_DIFF
;
2208 /* stay within table range */
2209 pwr_index
= iwl3945_hw_reg_fix_power_index(pwr_index
);
2210 gain
= power_gain_table
[a_band
][pwr_index
].tx_gain
;
2211 dsp_atten
= power_gain_table
[a_band
][pwr_index
].dsp_atten
;
2213 /* fill each CCK rate's iwl3945_channel_power_info structure
2214 * NOTE: All CCK-rate Txpwrs are the same for a given chnl!
2215 * NOTE: CCK rates start at end of OFDM rates! */
2216 for (rate_index
= 0;
2217 rate_index
< IWL_CCK_RATES
; rate_index
++) {
2218 pwr_info
= &ch_info
->power_info
[rate_index
+IWL_OFDM_RATES
];
2219 pwr_info
->requested_power
= power
;
2220 pwr_info
->power_table_index
= pwr_index
;
2221 pwr_info
->base_power_index
= base_pwr_index
;
2222 pwr_info
->tpc
.tx_gain
= gain
;
2223 pwr_info
->tpc
.dsp_atten
= dsp_atten
;
2226 /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */
2227 for (scan_tbl_index
= 0;
2228 scan_tbl_index
< IWL_NUM_SCAN_RATES
; scan_tbl_index
++) {
2229 s32 actual_index
= (scan_tbl_index
== 0) ?
2230 IWL_RATE_1M_INDEX_TABLE
: IWL_RATE_6M_INDEX_TABLE
;
2231 iwl3945_hw_reg_set_scan_power(priv
, scan_tbl_index
,
2232 actual_index
, clip_pwrs
, ch_info
, a_band
);
2239 int iwl3945_hw_rxq_stop(struct iwl_priv
*priv
)
2243 iwl_write_direct32(priv
, FH39_RCSR_CONFIG(0), 0);
2244 rc
= iwl_poll_direct_bit(priv
, FH39_RSSR_STATUS
,
2245 FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE
, 1000);
2247 IWL_ERR(priv
, "Can't stop Rx DMA.\n");
2252 int iwl3945_hw_tx_queue_init(struct iwl_priv
*priv
, struct iwl_tx_queue
*txq
)
2254 int txq_id
= txq
->q
.id
;
2256 struct iwl3945_shared
*shared_data
= priv
->_3945
.shared_virt
;
2258 shared_data
->tx_base_ptr
[txq_id
] = cpu_to_le32((u32
)txq
->q
.dma_addr
);
2260 iwl_write_direct32(priv
, FH39_CBCC_CTRL(txq_id
), 0);
2261 iwl_write_direct32(priv
, FH39_CBCC_BASE(txq_id
), 0);
2263 iwl_write_direct32(priv
, FH39_TCSR_CONFIG(txq_id
),
2264 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT
|
2265 FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF
|
2266 FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD
|
2267 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
|
2268 FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE
);
2270 /* fake read to flush all prev. writes */
2271 iwl_read32(priv
, FH39_TSSR_CBB_BASE
);
2279 static u16
iwl3945_get_hcmd_size(u8 cmd_id
, u16 len
)
2283 return sizeof(struct iwl3945_rxon_cmd
);
2284 case POWER_TABLE_CMD
:
2285 return sizeof(struct iwl3945_powertable_cmd
);
2292 static u16
iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd
*cmd
, u8
*data
)
2294 struct iwl3945_addsta_cmd
*addsta
= (struct iwl3945_addsta_cmd
*)data
;
2295 addsta
->mode
= cmd
->mode
;
2296 memcpy(&addsta
->sta
, &cmd
->sta
, sizeof(struct sta_id_modify
));
2297 memcpy(&addsta
->key
, &cmd
->key
, sizeof(struct iwl4965_keyinfo
));
2298 addsta
->station_flags
= cmd
->station_flags
;
2299 addsta
->station_flags_msk
= cmd
->station_flags_msk
;
2300 addsta
->tid_disable_tx
= cpu_to_le16(0);
2301 addsta
->rate_n_flags
= cmd
->rate_n_flags
;
2302 addsta
->add_immediate_ba_tid
= cmd
->add_immediate_ba_tid
;
2303 addsta
->remove_immediate_ba_tid
= cmd
->remove_immediate_ba_tid
;
2304 addsta
->add_immediate_ba_ssn
= cmd
->add_immediate_ba_ssn
;
2306 return (u16
)sizeof(struct iwl3945_addsta_cmd
);
2309 static int iwl3945_manage_ibss_station(struct iwl_priv
*priv
,
2310 struct ieee80211_vif
*vif
, bool add
)
2312 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
2316 ret
= iwl_add_bssid_station(priv
, vif
->bss_conf
.bssid
, false,
2317 &vif_priv
->ibss_bssid_sta_id
);
2321 iwl3945_sync_sta(priv
, vif_priv
->ibss_bssid_sta_id
,
2322 (priv
->band
== IEEE80211_BAND_5GHZ
) ?
2323 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
);
2324 iwl3945_rate_scale_init(priv
->hw
, vif_priv
->ibss_bssid_sta_id
);
2329 return iwl_remove_station(priv
, vif_priv
->ibss_bssid_sta_id
,
2330 vif
->bss_conf
.bssid
);
2334 * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table
2336 int iwl3945_init_hw_rate_table(struct iwl_priv
*priv
)
2338 int rc
, i
, index
, prev_index
;
2339 struct iwl3945_rate_scaling_cmd rate_cmd
= {
2340 .reserved
= {0, 0, 0},
2342 struct iwl3945_rate_scaling_info
*table
= rate_cmd
.table
;
2344 for (i
= 0; i
< ARRAY_SIZE(iwl3945_rates
); i
++) {
2345 index
= iwl3945_rates
[i
].table_rs_index
;
2347 table
[index
].rate_n_flags
=
2348 iwl3945_hw_set_rate_n_flags(iwl3945_rates
[i
].plcp
, 0);
2349 table
[index
].try_cnt
= priv
->retry_rate
;
2350 prev_index
= iwl3945_get_prev_ieee_rate(i
);
2351 table
[index
].next_rate_index
=
2352 iwl3945_rates
[prev_index
].table_rs_index
;
2355 switch (priv
->band
) {
2356 case IEEE80211_BAND_5GHZ
:
2357 IWL_DEBUG_RATE(priv
, "Select A mode rate scale\n");
2358 /* If one of the following CCK rates is used,
2359 * have it fall back to the 6M OFDM rate */
2360 for (i
= IWL_RATE_1M_INDEX_TABLE
;
2361 i
<= IWL_RATE_11M_INDEX_TABLE
; i
++)
2362 table
[i
].next_rate_index
=
2363 iwl3945_rates
[IWL_FIRST_OFDM_RATE
].table_rs_index
;
2365 /* Don't fall back to CCK rates */
2366 table
[IWL_RATE_12M_INDEX_TABLE
].next_rate_index
=
2367 IWL_RATE_9M_INDEX_TABLE
;
2369 /* Don't drop out of OFDM rates */
2370 table
[IWL_RATE_6M_INDEX_TABLE
].next_rate_index
=
2371 iwl3945_rates
[IWL_FIRST_OFDM_RATE
].table_rs_index
;
2374 case IEEE80211_BAND_2GHZ
:
2375 IWL_DEBUG_RATE(priv
, "Select B/G mode rate scale\n");
2376 /* If an OFDM rate is used, have it fall back to the
2379 if (!(priv
->_3945
.sta_supp_rates
& IWL_OFDM_RATES_MASK
) &&
2380 iwl_is_associated(priv
)) {
2382 index
= IWL_FIRST_CCK_RATE
;
2383 for (i
= IWL_RATE_6M_INDEX_TABLE
;
2384 i
<= IWL_RATE_54M_INDEX_TABLE
; i
++)
2385 table
[i
].next_rate_index
=
2386 iwl3945_rates
[index
].table_rs_index
;
2388 index
= IWL_RATE_11M_INDEX_TABLE
;
2389 /* CCK shouldn't fall back to OFDM... */
2390 table
[index
].next_rate_index
= IWL_RATE_5M_INDEX_TABLE
;
2399 /* Update the rate scaling for control frame Tx */
2400 rate_cmd
.table_id
= 0;
2401 rc
= iwl_send_cmd_pdu(priv
, REPLY_RATE_SCALE
, sizeof(rate_cmd
),
2406 /* Update the rate scaling for data frame Tx */
2407 rate_cmd
.table_id
= 1;
2408 return iwl_send_cmd_pdu(priv
, REPLY_RATE_SCALE
, sizeof(rate_cmd
),
2412 /* Called when initializing driver */
2413 int iwl3945_hw_set_hw_params(struct iwl_priv
*priv
)
2415 memset((void *)&priv
->hw_params
, 0,
2416 sizeof(struct iwl_hw_params
));
2418 priv
->_3945
.shared_virt
=
2419 dma_alloc_coherent(&priv
->pci_dev
->dev
,
2420 sizeof(struct iwl3945_shared
),
2421 &priv
->_3945
.shared_phys
, GFP_KERNEL
);
2422 if (!priv
->_3945
.shared_virt
) {
2423 IWL_ERR(priv
, "failed to allocate pci memory\n");
2427 /* Assign number of Usable TX queues */
2428 priv
->hw_params
.max_txq_num
= priv
->cfg
->num_of_queues
;
2430 priv
->hw_params
.tfd_size
= sizeof(struct iwl3945_tfd
);
2431 priv
->hw_params
.rx_page_order
= get_order(IWL_RX_BUF_SIZE_3K
);
2432 priv
->hw_params
.max_rxq_size
= RX_QUEUE_SIZE
;
2433 priv
->hw_params
.max_rxq_log
= RX_QUEUE_SIZE_LOG
;
2434 priv
->hw_params
.max_stations
= IWL3945_STATION_COUNT
;
2435 priv
->hw_params
.bcast_sta_id
= IWL3945_BROADCAST_ID
;
2437 priv
->hw_params
.rx_wrt_ptr_reg
= FH39_RSCSR_CHNL0_WPTR
;
2438 priv
->hw_params
.max_beacon_itrvl
= IWL39_MAX_UCODE_BEACON_INTERVAL
;
2439 priv
->hw_params
.beacon_time_tsf_bits
= IWL3945_EXT_BEACON_TIME_POS
;
2444 unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv
*priv
,
2445 struct iwl3945_frame
*frame
, u8 rate
)
2447 struct iwl3945_tx_beacon_cmd
*tx_beacon_cmd
;
2448 unsigned int frame_size
;
2450 tx_beacon_cmd
= (struct iwl3945_tx_beacon_cmd
*)&frame
->u
;
2451 memset(tx_beacon_cmd
, 0, sizeof(*tx_beacon_cmd
));
2453 tx_beacon_cmd
->tx
.sta_id
= priv
->hw_params
.bcast_sta_id
;
2454 tx_beacon_cmd
->tx
.stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
2456 frame_size
= iwl3945_fill_beacon_frame(priv
,
2457 tx_beacon_cmd
->frame
,
2458 sizeof(frame
->u
) - sizeof(*tx_beacon_cmd
));
2460 BUG_ON(frame_size
> MAX_MPDU_SIZE
);
2461 tx_beacon_cmd
->tx
.len
= cpu_to_le16((u16
)frame_size
);
2463 tx_beacon_cmd
->tx
.rate
= rate
;
2464 tx_beacon_cmd
->tx
.tx_flags
= (TX_CMD_FLG_SEQ_CTL_MSK
|
2465 TX_CMD_FLG_TSF_MSK
);
2467 /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/
2468 tx_beacon_cmd
->tx
.supp_rates
[0] =
2469 (IWL_OFDM_BASIC_RATES_MASK
>> IWL_FIRST_OFDM_RATE
) & 0xFF;
2471 tx_beacon_cmd
->tx
.supp_rates
[1] =
2472 (IWL_CCK_BASIC_RATES_MASK
& 0xF);
2474 return sizeof(struct iwl3945_tx_beacon_cmd
) + frame_size
;
2477 void iwl3945_hw_rx_handler_setup(struct iwl_priv
*priv
)
2479 priv
->rx_handlers
[REPLY_TX
] = iwl3945_rx_reply_tx
;
2480 priv
->rx_handlers
[REPLY_3945_RX
] = iwl3945_rx_reply_rx
;
2483 void iwl3945_hw_setup_deferred_work(struct iwl_priv
*priv
)
2485 INIT_DELAYED_WORK(&priv
->_3945
.thermal_periodic
,
2486 iwl3945_bg_reg_txpower_periodic
);
2489 void iwl3945_hw_cancel_deferred_work(struct iwl_priv
*priv
)
2491 cancel_delayed_work(&priv
->_3945
.thermal_periodic
);
2494 /* check contents of special bootstrap uCode SRAM */
2495 static int iwl3945_verify_bsm(struct iwl_priv
*priv
)
2497 __le32
*image
= priv
->ucode_boot
.v_addr
;
2498 u32 len
= priv
->ucode_boot
.len
;
2502 IWL_DEBUG_INFO(priv
, "Begin verify bsm\n");
2504 /* verify BSM SRAM contents */
2505 val
= iwl_read_prph(priv
, BSM_WR_DWCOUNT_REG
);
2506 for (reg
= BSM_SRAM_LOWER_BOUND
;
2507 reg
< BSM_SRAM_LOWER_BOUND
+ len
;
2508 reg
+= sizeof(u32
), image
++) {
2509 val
= iwl_read_prph(priv
, reg
);
2510 if (val
!= le32_to_cpu(*image
)) {
2511 IWL_ERR(priv
, "BSM uCode verification failed at "
2512 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
2513 BSM_SRAM_LOWER_BOUND
,
2514 reg
- BSM_SRAM_LOWER_BOUND
, len
,
2515 val
, le32_to_cpu(*image
));
2520 IWL_DEBUG_INFO(priv
, "BSM bootstrap uCode image OK\n");
2526 /******************************************************************************
2528 * EEPROM related functions
2530 ******************************************************************************/
2533 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
2534 * embedded controller) as EEPROM reader; each read is a series of pulses
2535 * to/from the EEPROM chip, not a single event, so even reads could conflict
2536 * if they weren't arbitrated by some ownership mechanism. Here, the driver
2537 * simply claims ownership, which should be safe when this function is called
2538 * (i.e. before loading uCode!).
2540 static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv
*priv
)
2542 _iwl_clear_bit(priv
, CSR_EEPROM_GP
, CSR_EEPROM_GP_IF_OWNER_MSK
);
2547 static void iwl3945_eeprom_release_semaphore(struct iwl_priv
*priv
)
2553 * iwl3945_load_bsm - Load bootstrap instructions
2557 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
2558 * in special SRAM that does not power down during RFKILL. When powering back
2559 * up after power-saving sleeps (or during initial uCode load), the BSM loads
2560 * the bootstrap program into the on-board processor, and starts it.
2562 * The bootstrap program loads (via DMA) instructions and data for a new
2563 * program from host DRAM locations indicated by the host driver in the
2564 * BSM_DRAM_* registers. Once the new program is loaded, it starts
2567 * When initializing the NIC, the host driver points the BSM to the
2568 * "initialize" uCode image. This uCode sets up some internal data, then
2569 * notifies host via "initialize alive" that it is complete.
2571 * The host then replaces the BSM_DRAM_* pointer values to point to the
2572 * normal runtime uCode instructions and a backup uCode data cache buffer
2573 * (filled initially with starting data values for the on-board processor),
2574 * then triggers the "initialize" uCode to load and launch the runtime uCode,
2575 * which begins normal operation.
2577 * When doing a power-save shutdown, runtime uCode saves data SRAM into
2578 * the backup data cache in DRAM before SRAM is powered down.
2580 * When powering back up, the BSM loads the bootstrap program. This reloads
2581 * the runtime uCode instructions and the backup data cache into SRAM,
2582 * and re-launches the runtime uCode from where it left off.
2584 static int iwl3945_load_bsm(struct iwl_priv
*priv
)
2586 __le32
*image
= priv
->ucode_boot
.v_addr
;
2587 u32 len
= priv
->ucode_boot
.len
;
2597 IWL_DEBUG_INFO(priv
, "Begin load bsm\n");
2599 /* make sure bootstrap program is no larger than BSM's SRAM size */
2600 if (len
> IWL39_MAX_BSM_SIZE
)
2603 /* Tell bootstrap uCode where to find the "Initialize" uCode
2604 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
2605 * NOTE: iwl3945_initialize_alive_start() will replace these values,
2606 * after the "initialize" uCode has run, to point to
2607 * runtime/protocol instructions and backup data cache. */
2608 pinst
= priv
->ucode_init
.p_addr
;
2609 pdata
= priv
->ucode_init_data
.p_addr
;
2610 inst_len
= priv
->ucode_init
.len
;
2611 data_len
= priv
->ucode_init_data
.len
;
2613 iwl_write_prph(priv
, BSM_DRAM_INST_PTR_REG
, pinst
);
2614 iwl_write_prph(priv
, BSM_DRAM_DATA_PTR_REG
, pdata
);
2615 iwl_write_prph(priv
, BSM_DRAM_INST_BYTECOUNT_REG
, inst_len
);
2616 iwl_write_prph(priv
, BSM_DRAM_DATA_BYTECOUNT_REG
, data_len
);
2618 /* Fill BSM memory with bootstrap instructions */
2619 for (reg_offset
= BSM_SRAM_LOWER_BOUND
;
2620 reg_offset
< BSM_SRAM_LOWER_BOUND
+ len
;
2621 reg_offset
+= sizeof(u32
), image
++)
2622 _iwl_write_prph(priv
, reg_offset
,
2623 le32_to_cpu(*image
));
2625 rc
= iwl3945_verify_bsm(priv
);
2629 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
2630 iwl_write_prph(priv
, BSM_WR_MEM_SRC_REG
, 0x0);
2631 iwl_write_prph(priv
, BSM_WR_MEM_DST_REG
,
2632 IWL39_RTC_INST_LOWER_BOUND
);
2633 iwl_write_prph(priv
, BSM_WR_DWCOUNT_REG
, len
/ sizeof(u32
));
2635 /* Load bootstrap code into instruction SRAM now,
2636 * to prepare to load "initialize" uCode */
2637 iwl_write_prph(priv
, BSM_WR_CTRL_REG
,
2638 BSM_WR_CTRL_REG_BIT_START
);
2640 /* Wait for load of bootstrap uCode to finish */
2641 for (i
= 0; i
< 100; i
++) {
2642 done
= iwl_read_prph(priv
, BSM_WR_CTRL_REG
);
2643 if (!(done
& BSM_WR_CTRL_REG_BIT_START
))
2648 IWL_DEBUG_INFO(priv
, "BSM write complete, poll %d iterations\n", i
);
2650 IWL_ERR(priv
, "BSM write did not complete!\n");
2654 /* Enable future boot loads whenever power management unit triggers it
2655 * (e.g. when powering back up after power-save shutdown) */
2656 iwl_write_prph(priv
, BSM_WR_CTRL_REG
,
2657 BSM_WR_CTRL_REG_BIT_START_EN
);
2662 static struct iwl_hcmd_ops iwl3945_hcmd
= {
2663 .rxon_assoc
= iwl3945_send_rxon_assoc
,
2664 .commit_rxon
= iwl3945_commit_rxon
,
2665 .send_bt_config
= iwl_send_bt_config
,
2668 static struct iwl_lib_ops iwl3945_lib
= {
2669 .txq_attach_buf_to_tfd
= iwl3945_hw_txq_attach_buf_to_tfd
,
2670 .txq_free_tfd
= iwl3945_hw_txq_free_tfd
,
2671 .txq_init
= iwl3945_hw_tx_queue_init
,
2672 .load_ucode
= iwl3945_load_bsm
,
2673 .dump_nic_event_log
= iwl3945_dump_nic_event_log
,
2674 .dump_nic_error_log
= iwl3945_dump_nic_error_log
,
2676 .init
= iwl3945_apm_init
,
2677 .stop
= iwl_apm_stop
,
2678 .config
= iwl3945_nic_config
,
2679 .set_pwr_src
= iwl3945_set_pwr_src
,
2682 .regulatory_bands
= {
2683 EEPROM_REGULATORY_BAND_1_CHANNELS
,
2684 EEPROM_REGULATORY_BAND_2_CHANNELS
,
2685 EEPROM_REGULATORY_BAND_3_CHANNELS
,
2686 EEPROM_REGULATORY_BAND_4_CHANNELS
,
2687 EEPROM_REGULATORY_BAND_5_CHANNELS
,
2688 EEPROM_REGULATORY_BAND_NO_HT40
,
2689 EEPROM_REGULATORY_BAND_NO_HT40
,
2691 .verify_signature
= iwlcore_eeprom_verify_signature
,
2692 .acquire_semaphore
= iwl3945_eeprom_acquire_semaphore
,
2693 .release_semaphore
= iwl3945_eeprom_release_semaphore
,
2694 .query_addr
= iwlcore_eeprom_query_addr
,
2696 .send_tx_power
= iwl3945_send_tx_power
,
2697 .is_valid_rtc_data_addr
= iwl3945_hw_valid_rtc_data_addr
,
2698 .post_associate
= iwl3945_post_associate
,
2699 .isr
= iwl_isr_legacy
,
2700 .config_ap
= iwl3945_config_ap
,
2701 .manage_ibss_station
= iwl3945_manage_ibss_station
,
2702 .recover_from_tx_stall
= iwl_bg_monitor_recover
,
2703 .check_plcp_health
= iwl3945_good_plcp_health
,
2706 .rx_stats_read
= iwl3945_ucode_rx_stats_read
,
2707 .tx_stats_read
= iwl3945_ucode_tx_stats_read
,
2708 .general_stats_read
= iwl3945_ucode_general_stats_read
,
2712 static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils
= {
2713 .get_hcmd_size
= iwl3945_get_hcmd_size
,
2714 .build_addsta_hcmd
= iwl3945_build_addsta_hcmd
,
2715 .rts_tx_cmd_flag
= iwlcore_rts_tx_cmd_flag
,
2716 .request_scan
= iwl3945_request_scan
,
2719 static const struct iwl_ops iwl3945_ops
= {
2720 .lib
= &iwl3945_lib
,
2721 .hcmd
= &iwl3945_hcmd
,
2722 .utils
= &iwl3945_hcmd_utils
,
2723 .led
= &iwl3945_led_ops
,
2726 static struct iwl_cfg iwl3945_bg_cfg
= {
2728 .fw_name_pre
= IWL3945_FW_PRE
,
2729 .ucode_api_max
= IWL3945_UCODE_API_MAX
,
2730 .ucode_api_min
= IWL3945_UCODE_API_MIN
,
2732 .eeprom_size
= IWL3945_EEPROM_IMG_SIZE
,
2733 .eeprom_ver
= EEPROM_3945_EEPROM_VERSION
,
2734 .ops
= &iwl3945_ops
,
2735 .num_of_queues
= IWL39_NUM_QUEUES
,
2736 .mod_params
= &iwl3945_mod_params
,
2737 .pll_cfg_val
= CSR39_ANA_PLL_CFG_VAL
,
2740 .use_isr_legacy
= true,
2741 .ht_greenfield_support
= false,
2742 .led_compensation
= 64,
2743 .broken_powersave
= true,
2744 .plcp_delta_threshold
= IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF
,
2745 .monitor_recover_period
= IWL_MONITORING_PERIOD
,
2746 .max_event_log_size
= 512,
2747 .tx_power_by_driver
= true,
2750 static struct iwl_cfg iwl3945_abg_cfg
= {
2752 .fw_name_pre
= IWL3945_FW_PRE
,
2753 .ucode_api_max
= IWL3945_UCODE_API_MAX
,
2754 .ucode_api_min
= IWL3945_UCODE_API_MIN
,
2755 .sku
= IWL_SKU_A
|IWL_SKU_G
,
2756 .eeprom_size
= IWL3945_EEPROM_IMG_SIZE
,
2757 .eeprom_ver
= EEPROM_3945_EEPROM_VERSION
,
2758 .ops
= &iwl3945_ops
,
2759 .num_of_queues
= IWL39_NUM_QUEUES
,
2760 .mod_params
= &iwl3945_mod_params
,
2761 .use_isr_legacy
= true,
2762 .ht_greenfield_support
= false,
2763 .led_compensation
= 64,
2764 .broken_powersave
= true,
2765 .plcp_delta_threshold
= IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF
,
2766 .monitor_recover_period
= IWL_MONITORING_PERIOD
,
2767 .max_event_log_size
= 512,
2768 .tx_power_by_driver
= true,
2771 DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids
) = {
2772 {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg
)},
2773 {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg
)},
2774 {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg
)},
2775 {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg
)},
2776 {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID
, iwl3945_abg_cfg
)},
2777 {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID
, iwl3945_abg_cfg
)},
2781 MODULE_DEVICE_TABLE(pci
, iwl3945_hw_card_ids
);