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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
1f447808 | 3 | * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. |
b481de9c ZY |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
759ef89f | 22 | * Intel Linux Wireless <ilw@linux.intel.com> |
b481de9c ZY |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
24 | * | |
25 | *****************************************************************************/ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
b481de9c | 29 | #include <linux/init.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
b481de9c ZY |
31 | #include <linux/pci.h> |
32 | #include <linux/dma-mapping.h> | |
33 | #include <linux/delay.h> | |
d43c36dc | 34 | #include <linux/sched.h> |
b481de9c ZY |
35 | #include <linux/skbuff.h> |
36 | #include <linux/netdevice.h> | |
37 | #include <linux/wireless.h> | |
38 | #include <linux/firmware.h> | |
b481de9c | 39 | #include <linux/etherdevice.h> |
12342c47 ZY |
40 | #include <asm/unaligned.h> |
41 | #include <net/mac80211.h> | |
b481de9c | 42 | |
dbb6654c | 43 | #include "iwl-fh.h" |
bddadf86 | 44 | #include "iwl-3945-fh.h" |
600c0e11 | 45 | #include "iwl-commands.h" |
17f841cd | 46 | #include "iwl-sta.h" |
b481de9c | 47 | #include "iwl-3945.h" |
e6148917 | 48 | #include "iwl-eeprom.h" |
5747d47f | 49 | #include "iwl-core.h" |
4a6547c7 | 50 | #include "iwl-helpers.h" |
e932a609 JB |
51 | #include "iwl-led.h" |
52 | #include "iwl-3945-led.h" | |
17f36fc6 | 53 | #include "iwl-3945-debugfs.h" |
b481de9c ZY |
54 | |
55 | #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \ | |
56 | [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ | |
57 | IWL_RATE_##r##M_IEEE, \ | |
58 | IWL_RATE_##ip##M_INDEX, \ | |
59 | IWL_RATE_##in##M_INDEX, \ | |
60 | IWL_RATE_##rp##M_INDEX, \ | |
61 | IWL_RATE_##rn##M_INDEX, \ | |
62 | IWL_RATE_##pp##M_INDEX, \ | |
14577f23 MA |
63 | IWL_RATE_##np##M_INDEX, \ |
64 | IWL_RATE_##r##M_INDEX_TABLE, \ | |
65 | IWL_RATE_##ip##M_INDEX_TABLE } | |
b481de9c ZY |
66 | |
67 | /* | |
68 | * Parameter order: | |
69 | * rate, prev rate, next rate, prev tgg rate, next tgg rate | |
70 | * | |
71 | * If there isn't a valid next or previous rate then INV is used which | |
72 | * maps to IWL_RATE_INVALID | |
73 | * | |
74 | */ | |
d9829a67 | 75 | const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT_3945] = { |
14577f23 MA |
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 */ | |
b481de9c ZY |
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 */ | |
b481de9c ZY |
88 | }; |
89 | ||
bb8c093b | 90 | /* 1 = enable the iwl3945_disable_events() function */ |
b481de9c ZY |
91 | #define IWL_EVT_DISABLE (0) |
92 | #define IWL_EVT_DISABLE_SIZE (1532/32) | |
93 | ||
94 | /** | |
bb8c093b | 95 | * iwl3945_disable_events - Disable selected events in uCode event log |
b481de9c ZY |
96 | * |
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. */ | |
4a8a4322 | 103 | void iwl3945_disable_events(struct iwl_priv *priv) |
b481de9c | 104 | { |
b481de9c ZY |
105 | int i; |
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 */ | |
157 | }; | |
158 | ||
159 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
bb8c093b | 160 | if (!iwl3945_hw_valid_rtc_data_addr(base)) { |
15b1687c | 161 | IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base); |
b481de9c ZY |
162 | return; |
163 | } | |
164 | ||
5d49f498 AK |
165 | disable_ptr = iwl_read_targ_mem(priv, base + (4 * sizeof(u32))); |
166 | array_size = iwl_read_targ_mem(priv, base + (5 * sizeof(u32))); | |
b481de9c ZY |
167 | |
168 | if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) { | |
e1623446 | 169 | IWL_DEBUG_INFO(priv, "Disabling selected uCode log events at 0x%x\n", |
b481de9c | 170 | disable_ptr); |
b481de9c | 171 | for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++) |
5d49f498 | 172 | iwl_write_targ_mem(priv, |
af7cca2a TW |
173 | disable_ptr + (i * sizeof(u32)), |
174 | evt_disable[i]); | |
b481de9c | 175 | |
b481de9c | 176 | } else { |
e1623446 TW |
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", | |
b481de9c ZY |
180 | disable_ptr, array_size); |
181 | } | |
182 | ||
183 | } | |
184 | ||
17744ff6 TW |
185 | static int iwl3945_hwrate_to_plcp_idx(u8 plcp) |
186 | { | |
187 | int idx; | |
188 | ||
1d79e53c | 189 | for (idx = 0; idx < IWL_RATE_COUNT_3945; idx++) |
17744ff6 TW |
190 | if (iwl3945_rates[idx].plcp == plcp) |
191 | return idx; | |
192 | return -1; | |
193 | } | |
194 | ||
d08853a3 | 195 | #ifdef CONFIG_IWLWIFI_DEBUG |
04569cbe | 196 | #define TX_STATUS_ENTRY(x) case TX_3945_STATUS_FAIL_ ## x: return #x |
91c066f2 TW |
197 | |
198 | static const char *iwl3945_get_tx_fail_reason(u32 status) | |
199 | { | |
200 | switch (status & TX_STATUS_MSK) { | |
04569cbe | 201 | case TX_3945_STATUS_SUCCESS: |
91c066f2 TW |
202 | return "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); | |
219 | } | |
220 | ||
221 | return "UNKNOWN"; | |
222 | } | |
223 | #else | |
224 | static inline const char *iwl3945_get_tx_fail_reason(u32 status) | |
225 | { | |
226 | return ""; | |
227 | } | |
228 | #endif | |
229 | ||
e6a9854b JB |
230 | /* |
231 | * get ieee prev rate from rate scale table. | |
232 | * for A and B mode we need to overright prev | |
233 | * value | |
234 | */ | |
4a8a4322 | 235 | int iwl3945_rs_next_rate(struct iwl_priv *priv, int rate) |
e6a9854b JB |
236 | { |
237 | int next_rate = iwl3945_get_prev_ieee_rate(rate); | |
238 | ||
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; | |
245 | break; | |
7262796a | 246 | case IEEE80211_BAND_2GHZ: |
ee525d13 | 247 | if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) && |
8ccde88a | 248 | iwl_is_associated(priv)) { |
7262796a AM |
249 | if (rate == IWL_RATE_11M_INDEX) |
250 | next_rate = IWL_RATE_5M_INDEX; | |
251 | } | |
e6a9854b | 252 | break; |
7262796a | 253 | |
e6a9854b JB |
254 | default: |
255 | break; | |
256 | } | |
257 | ||
258 | return next_rate; | |
259 | } | |
260 | ||
91c066f2 TW |
261 | |
262 | /** | |
263 | * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd | |
264 | * | |
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. | |
268 | */ | |
4a8a4322 | 269 | static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv, |
91c066f2 TW |
270 | int txq_id, int index) |
271 | { | |
188cf6c7 | 272 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
d20b3c65 | 273 | struct iwl_queue *q = &txq->q; |
dbb6654c | 274 | struct iwl_tx_info *tx_info; |
91c066f2 TW |
275 | |
276 | BUG_ON(txq_id == IWL_CMD_QUEUE_NUM); | |
277 | ||
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)) { | |
280 | ||
281 | tx_info = &txq->txb[txq->q.read_ptr]; | |
e039fa4a | 282 | ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]); |
91c066f2 | 283 | tx_info->skb[0] = NULL; |
7aaa1d79 | 284 | priv->cfg->ops->lib->txq_free_tfd(priv, txq); |
91c066f2 TW |
285 | } |
286 | ||
d20b3c65 | 287 | if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) && |
91c066f2 TW |
288 | (txq_id != IWL_CMD_QUEUE_NUM) && |
289 | priv->mac80211_registered) | |
e4e72fb4 | 290 | iwl_wake_queue(priv, txq_id); |
91c066f2 TW |
291 | } |
292 | ||
293 | /** | |
294 | * iwl3945_rx_reply_tx - Handle Tx response | |
295 | */ | |
4a8a4322 | 296 | static void iwl3945_rx_reply_tx(struct iwl_priv *priv, |
17f36fc6 | 297 | struct iwl_rx_mem_buffer *rxb) |
91c066f2 | 298 | { |
2f301227 | 299 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
91c066f2 TW |
300 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
301 | int txq_id = SEQ_TO_QUEUE(sequence); | |
302 | int index = SEQ_TO_INDEX(sequence); | |
188cf6c7 | 303 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; |
e039fa4a | 304 | struct ieee80211_tx_info *info; |
91c066f2 TW |
305 | struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
306 | u32 status = le32_to_cpu(tx_resp->status); | |
307 | int rate_idx; | |
74221d07 | 308 | int fail; |
91c066f2 | 309 | |
625a381a | 310 | if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { |
15b1687c | 311 | IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " |
91c066f2 TW |
312 | "is out of range [0-%d] %d %d\n", txq_id, |
313 | index, txq->q.n_bd, txq->q.write_ptr, | |
314 | txq->q.read_ptr); | |
315 | return; | |
316 | } | |
317 | ||
e039fa4a | 318 | info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]); |
e6a9854b JB |
319 | ieee80211_tx_info_clear_status(info); |
320 | ||
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; | |
325 | ||
326 | fail = tx_resp->failure_frame; | |
74221d07 AM |
327 | |
328 | info->status.rates[0].idx = rate_idx; | |
329 | info->status.rates[0].count = fail + 1; /* add final attempt */ | |
91c066f2 | 330 | |
91c066f2 | 331 | /* tx_status->rts_retry_count = tx_resp->failure_rts; */ |
e039fa4a JB |
332 | info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ? |
333 | IEEE80211_TX_STAT_ACK : 0; | |
91c066f2 | 334 | |
e1623446 | 335 | IWL_DEBUG_TX(priv, "Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", |
91c066f2 TW |
336 | txq_id, iwl3945_get_tx_fail_reason(status), status, |
337 | tx_resp->rate, tx_resp->failure_frame); | |
338 | ||
e1623446 | 339 | IWL_DEBUG_TX_REPLY(priv, "Tx queue reclaim %d\n", index); |
91c066f2 TW |
340 | iwl3945_tx_queue_reclaim(priv, txq_id, index); |
341 | ||
342 | if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) | |
15b1687c | 343 | IWL_ERR(priv, "TODO: Implement Tx ABORT REQUIRED!!!\n"); |
91c066f2 TW |
344 | } |
345 | ||
346 | ||
347 | ||
b481de9c ZY |
348 | /***************************************************************************** |
349 | * | |
350 | * Intel PRO/Wireless 3945ABG/BG Network Connection | |
351 | * | |
352 | * RX handler implementations | |
353 | * | |
b481de9c | 354 | *****************************************************************************/ |
d73e4923 | 355 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
17f36fc6 AK |
356 | /* |
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. | |
360 | */ | |
361 | static void iwl3945_accumulative_statistics(struct iwl_priv *priv, | |
362 | __le32 *stats) | |
363 | { | |
364 | int i; | |
365 | __le32 *prev_stats; | |
366 | u32 *accum_stats; | |
367 | u32 *delta, *max_delta; | |
368 | ||
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; | |
373 | ||
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) | |
382 | *max_delta = *delta; | |
383 | } | |
384 | } | |
385 | ||
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; | |
391 | } | |
392 | #endif | |
b481de9c | 393 | |
a29576a7 AK |
394 | /** |
395 | * iwl3945_good_plcp_health - checks for plcp error. | |
396 | * | |
397 | * When the plcp error is exceeding the thresholds, reset the radio | |
398 | * to improve the throughput. | |
399 | */ | |
400 | static bool iwl3945_good_plcp_health(struct iwl_priv *priv, | |
401 | struct iwl_rx_packet *pkt) | |
402 | { | |
403 | bool rc = true; | |
404 | struct iwl3945_notif_statistics current_stat; | |
405 | int combined_plcp_delta; | |
406 | unsigned int plcp_msec; | |
407 | unsigned long plcp_received_jiffies; | |
408 | ||
409 | memcpy(¤t_stat, pkt->u.raw, sizeof(struct | |
410 | iwl3945_notif_statistics)); | |
411 | /* | |
412 | * check for plcp_err and trigger radio reset if it exceeds | |
413 | * the plcp error threshold plcp_delta. | |
414 | */ | |
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; | |
419 | /* | |
420 | * check to make sure plcp_msec is not 0 to prevent division | |
421 | * by zero. | |
422 | */ | |
423 | if (plcp_msec) { | |
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)); | |
427 | ||
428 | if ((combined_plcp_delta > 0) && | |
429 | ((combined_plcp_delta * 100) / plcp_msec) > | |
430 | priv->cfg->plcp_delta_threshold) { | |
431 | /* | |
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, | |
438 | * plcp_msec | |
439 | */ | |
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); | |
445 | /* | |
446 | * Reset the RF radio due to the high plcp | |
447 | * error rate | |
448 | */ | |
449 | rc = false; | |
450 | } | |
451 | } | |
452 | return rc; | |
453 | } | |
454 | ||
396887a2 DH |
455 | void iwl3945_hw_rx_statistics(struct iwl_priv *priv, |
456 | struct iwl_rx_mem_buffer *rxb) | |
b481de9c | 457 | { |
2f301227 | 458 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
17f36fc6 | 459 | |
e1623446 | 460 | IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n", |
bb8c093b | 461 | (int)sizeof(struct iwl3945_notif_statistics), |
396887a2 | 462 | le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK); |
d73e4923 | 463 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
17f36fc6 AK |
464 | iwl3945_accumulative_statistics(priv, (__le32 *)&pkt->u.raw); |
465 | #endif | |
a29576a7 | 466 | iwl_recover_from_statistics(priv, pkt); |
b481de9c | 467 | |
ee525d13 | 468 | memcpy(&priv->_3945.statistics, pkt->u.raw, sizeof(priv->_3945.statistics)); |
b481de9c ZY |
469 | } |
470 | ||
17f36fc6 AK |
471 | void iwl3945_reply_statistics(struct iwl_priv *priv, |
472 | struct iwl_rx_mem_buffer *rxb) | |
473 | { | |
474 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
475 | __le32 *flag = (__le32 *)&pkt->u.raw; | |
476 | ||
477 | if (le32_to_cpu(*flag) & UCODE_STATISTICS_CLEAR_MSK) { | |
d73e4923 | 478 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
17f36fc6 AK |
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)); | |
485 | #endif | |
486 | IWL_DEBUG_RX(priv, "Statistics have been cleared\n"); | |
487 | } | |
488 | iwl3945_hw_rx_statistics(priv, rxb); | |
489 | } | |
490 | ||
491 | ||
17744ff6 TW |
492 | /****************************************************************************** |
493 | * | |
494 | * Misc. internal state and helper functions | |
495 | * | |
496 | ******************************************************************************/ | |
d08853a3 | 497 | #ifdef CONFIG_IWLWIFI_DEBUG |
17744ff6 TW |
498 | |
499 | /** | |
500 | * iwl3945_report_frame - dump frame to syslog during debug sessions | |
501 | * | |
502 | * You may hack this function to show different aspects of received frames, | |
503 | * including selective frame dumps. | |
504 | * group100 parameter selects whether to show 1 out of 100 good frames. | |
505 | */ | |
d08853a3 | 506 | static void _iwl3945_dbg_report_frame(struct iwl_priv *priv, |
3d24a9f7 | 507 | struct iwl_rx_packet *pkt, |
17744ff6 TW |
508 | struct ieee80211_hdr *header, int group100) |
509 | { | |
510 | u32 to_us; | |
511 | u32 print_summary = 0; | |
512 | u32 print_dump = 0; /* set to 1 to dump all frames' contents */ | |
513 | u32 hundred = 0; | |
514 | u32 dataframe = 0; | |
fd7c8a40 | 515 | __le16 fc; |
17744ff6 TW |
516 | u16 seq_ctl; |
517 | u16 channel; | |
518 | u16 phy_flags; | |
519 | u16 length; | |
520 | u16 status; | |
521 | u16 bcn_tmr; | |
522 | u32 tsf_low; | |
523 | u64 tsf; | |
524 | u8 rssi; | |
525 | u8 agc; | |
526 | u16 sig_avg; | |
527 | u16 noise_diff; | |
528 | struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
529 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
530 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
531 | u8 *data = IWL_RX_DATA(pkt); | |
532 | ||
533 | /* MAC header */ | |
fd7c8a40 | 534 | fc = header->frame_control; |
17744ff6 TW |
535 | seq_ctl = le16_to_cpu(header->seq_ctrl); |
536 | ||
537 | /* metadata */ | |
538 | channel = le16_to_cpu(rx_hdr->channel); | |
539 | phy_flags = le16_to_cpu(rx_hdr->phy_flags); | |
540 | length = le16_to_cpu(rx_hdr->len); | |
541 | ||
542 | /* end-of-frame status and timestamp */ | |
543 | status = le32_to_cpu(rx_end->status); | |
544 | bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); | |
545 | tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; | |
546 | tsf = le64_to_cpu(rx_end->timestamp); | |
547 | ||
548 | /* signal statistics */ | |
549 | rssi = rx_stats->rssi; | |
550 | agc = rx_stats->agc; | |
551 | sig_avg = le16_to_cpu(rx_stats->sig_avg); | |
552 | noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
553 | ||
554 | to_us = !compare_ether_addr(header->addr1, priv->mac_addr); | |
555 | ||
556 | /* if data frame is to us and all is good, | |
557 | * (optionally) print summary for only 1 out of every 100 */ | |
fd7c8a40 HH |
558 | if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) == |
559 | cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) { | |
17744ff6 TW |
560 | dataframe = 1; |
561 | if (!group100) | |
562 | print_summary = 1; /* print each frame */ | |
563 | else if (priv->framecnt_to_us < 100) { | |
564 | priv->framecnt_to_us++; | |
565 | print_summary = 0; | |
566 | } else { | |
567 | priv->framecnt_to_us = 0; | |
568 | print_summary = 1; | |
569 | hundred = 1; | |
570 | } | |
571 | } else { | |
572 | /* print summary for all other frames */ | |
573 | print_summary = 1; | |
574 | } | |
575 | ||
576 | if (print_summary) { | |
577 | char *title; | |
0ff1cca0 | 578 | int rate; |
17744ff6 TW |
579 | |
580 | if (hundred) | |
581 | title = "100Frames"; | |
fd7c8a40 | 582 | else if (ieee80211_has_retry(fc)) |
17744ff6 | 583 | title = "Retry"; |
fd7c8a40 | 584 | else if (ieee80211_is_assoc_resp(fc)) |
17744ff6 | 585 | title = "AscRsp"; |
fd7c8a40 | 586 | else if (ieee80211_is_reassoc_resp(fc)) |
17744ff6 | 587 | title = "RasRsp"; |
fd7c8a40 | 588 | else if (ieee80211_is_probe_resp(fc)) { |
17744ff6 TW |
589 | title = "PrbRsp"; |
590 | print_dump = 1; /* dump frame contents */ | |
591 | } else if (ieee80211_is_beacon(fc)) { | |
592 | title = "Beacon"; | |
593 | print_dump = 1; /* dump frame contents */ | |
594 | } else if (ieee80211_is_atim(fc)) | |
595 | title = "ATIM"; | |
596 | else if (ieee80211_is_auth(fc)) | |
597 | title = "Auth"; | |
598 | else if (ieee80211_is_deauth(fc)) | |
599 | title = "DeAuth"; | |
600 | else if (ieee80211_is_disassoc(fc)) | |
601 | title = "DisAssoc"; | |
602 | else | |
603 | title = "Frame"; | |
604 | ||
605 | rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate); | |
606 | if (rate == -1) | |
607 | rate = 0; | |
608 | else | |
609 | rate = iwl3945_rates[rate].ieee / 2; | |
610 | ||
611 | /* print frame summary. | |
612 | * MAC addresses show just the last byte (for brevity), | |
613 | * but you can hack it to show more, if you'd like to. */ | |
614 | if (dataframe) | |
e1623446 | 615 | IWL_DEBUG_RX(priv, "%s: mhd=0x%04x, dst=0x%02x, " |
91dd6c27 | 616 | "len=%u, rssi=%d, chnl=%d, rate=%d,\n", |
fd7c8a40 | 617 | title, le16_to_cpu(fc), header->addr1[5], |
17744ff6 TW |
618 | length, rssi, channel, rate); |
619 | else { | |
620 | /* src/dst addresses assume managed mode */ | |
e1623446 | 621 | IWL_DEBUG_RX(priv, "%s: 0x%04x, dst=0x%02x, " |
17744ff6 TW |
622 | "src=0x%02x, rssi=%u, tim=%lu usec, " |
623 | "phy=0x%02x, chnl=%d\n", | |
fd7c8a40 | 624 | title, le16_to_cpu(fc), header->addr1[5], |
17744ff6 TW |
625 | header->addr3[5], rssi, |
626 | tsf_low - priv->scan_start_tsf, | |
627 | phy_flags, channel); | |
628 | } | |
629 | } | |
630 | if (print_dump) | |
3d816c77 | 631 | iwl_print_hex_dump(priv, IWL_DL_RX, data, length); |
17744ff6 | 632 | } |
d08853a3 SO |
633 | |
634 | static void iwl3945_dbg_report_frame(struct iwl_priv *priv, | |
635 | struct iwl_rx_packet *pkt, | |
636 | struct ieee80211_hdr *header, int group100) | |
637 | { | |
3d816c77 | 638 | if (iwl_get_debug_level(priv) & IWL_DL_RX) |
d08853a3 SO |
639 | _iwl3945_dbg_report_frame(priv, pkt, header, group100); |
640 | } | |
641 | ||
17744ff6 | 642 | #else |
4a8a4322 | 643 | static inline void iwl3945_dbg_report_frame(struct iwl_priv *priv, |
3d24a9f7 | 644 | struct iwl_rx_packet *pkt, |
17744ff6 TW |
645 | struct ieee80211_hdr *header, int group100) |
646 | { | |
647 | } | |
648 | #endif | |
649 | ||
4bd9b4f3 | 650 | /* This is necessary only for a number of statistics, see the caller. */ |
4a8a4322 | 651 | static int iwl3945_is_network_packet(struct iwl_priv *priv, |
4bd9b4f3 AG |
652 | struct ieee80211_hdr *header) |
653 | { | |
654 | /* Filter incoming packets to determine if they are targeted toward | |
655 | * this network, discarding packets coming from ourselves */ | |
656 | switch (priv->iw_mode) { | |
05c914fe | 657 | case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */ |
4bd9b4f3 AG |
658 | /* packets to our IBSS update information */ |
659 | return !compare_ether_addr(header->addr3, priv->bssid); | |
05c914fe | 660 | case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */ |
4bd9b4f3 AG |
661 | /* packets to our IBSS update information */ |
662 | return !compare_ether_addr(header->addr2, priv->bssid); | |
663 | default: | |
664 | return 1; | |
665 | } | |
666 | } | |
17744ff6 | 667 | |
4a8a4322 | 668 | static void iwl3945_pass_packet_to_mac80211(struct iwl_priv *priv, |
6100b588 | 669 | struct iwl_rx_mem_buffer *rxb, |
12342c47 | 670 | struct ieee80211_rx_status *stats) |
b481de9c | 671 | { |
2f301227 | 672 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
4bd9b4f3 | 673 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); |
bb8c093b CH |
674 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); |
675 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
2f301227 ZY |
676 | u16 len = le16_to_cpu(rx_hdr->len); |
677 | struct sk_buff *skb; | |
29b1b268 | 678 | __le16 fc = hdr->frame_control; |
b481de9c ZY |
679 | |
680 | /* We received data from the HW, so stop the watchdog */ | |
2f301227 ZY |
681 | if (unlikely(len + IWL39_RX_FRAME_SIZE > |
682 | PAGE_SIZE << priv->hw_params.rx_page_order)) { | |
e1623446 | 683 | IWL_DEBUG_DROP(priv, "Corruption detected!\n"); |
b481de9c ZY |
684 | return; |
685 | } | |
686 | ||
687 | /* We only process data packets if the interface is open */ | |
688 | if (unlikely(!priv->is_open)) { | |
e1623446 TW |
689 | IWL_DEBUG_DROP_LIMIT(priv, |
690 | "Dropping packet while interface is not open.\n"); | |
b481de9c ZY |
691 | return; |
692 | } | |
b481de9c | 693 | |
ecdf94b8 | 694 | skb = dev_alloc_skb(128); |
2f301227 | 695 | if (!skb) { |
ecdf94b8 | 696 | IWL_ERR(priv, "dev_alloc_skb failed\n"); |
2f301227 ZY |
697 | return; |
698 | } | |
b481de9c | 699 | |
9c74d9fb | 700 | if (!iwl3945_mod_params.sw_crypto) |
8ccde88a | 701 | iwl_set_decrypted_flag(priv, |
2f301227 | 702 | (struct ieee80211_hdr *)rxb_addr(rxb), |
b481de9c ZY |
703 | le32_to_cpu(rx_end->status), stats); |
704 | ||
2f301227 ZY |
705 | skb_add_rx_frag(skb, 0, rxb->page, |
706 | (void *)rx_hdr->payload - (void *)pkt, len); | |
707 | ||
29b1b268 | 708 | iwl_update_stats(priv, false, fc, len); |
2f301227 | 709 | memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); |
2f301227 | 710 | |
29b1b268 | 711 | ieee80211_rx(priv->hw, skb); |
2f301227 ZY |
712 | priv->alloc_rxb_page--; |
713 | rxb->page = NULL; | |
b481de9c ZY |
714 | } |
715 | ||
7878a5a4 MA |
716 | #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
717 | ||
4a8a4322 | 718 | static void iwl3945_rx_reply_rx(struct iwl_priv *priv, |
6100b588 | 719 | struct iwl_rx_mem_buffer *rxb) |
b481de9c | 720 | { |
17744ff6 TW |
721 | struct ieee80211_hdr *header; |
722 | struct ieee80211_rx_status rx_status; | |
2f301227 | 723 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
bb8c093b CH |
724 | struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); |
725 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
726 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
f875f518 RC |
727 | u16 rx_stats_sig_avg __maybe_unused = le16_to_cpu(rx_stats->sig_avg); |
728 | u16 rx_stats_noise_diff __maybe_unused = le16_to_cpu(rx_stats->noise_diff); | |
b481de9c | 729 | u8 network_packet; |
17744ff6 | 730 | |
17744ff6 TW |
731 | rx_status.flag = 0; |
732 | rx_status.mactime = le64_to_cpu(rx_end->timestamp); | |
dc92e497 | 733 | rx_status.freq = |
c0186078 | 734 | ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel)); |
17744ff6 TW |
735 | rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? |
736 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
737 | ||
738 | rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate); | |
17744ff6 TW |
739 | if (rx_status.band == IEEE80211_BAND_5GHZ) |
740 | rx_status.rate_idx -= IWL_FIRST_OFDM_RATE; | |
b481de9c | 741 | |
9024adf5 | 742 | rx_status.antenna = (le16_to_cpu(rx_hdr->phy_flags) & |
6f0a2c4d BR |
743 | RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; |
744 | ||
745 | /* set the preamble flag if appropriate */ | |
746 | if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
747 | rx_status.flag |= RX_FLAG_SHORTPRE; | |
748 | ||
b481de9c | 749 | if ((unlikely(rx_stats->phy_count > 20))) { |
e1623446 TW |
750 | IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n", |
751 | rx_stats->phy_count); | |
b481de9c ZY |
752 | return; |
753 | } | |
754 | ||
755 | if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) | |
756 | || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { | |
e1623446 | 757 | IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", rx_end->status); |
b481de9c ZY |
758 | return; |
759 | } | |
760 | ||
56decd3c | 761 | |
b481de9c ZY |
762 | |
763 | /* Convert 3945's rssi indicator to dBm */ | |
250bdd21 | 764 | rx_status.signal = rx_stats->rssi - IWL39_RSSI_OFFSET; |
b481de9c | 765 | |
ed1b6e99 JB |
766 | IWL_DEBUG_STATS(priv, "Rssi %d sig_avg %d noise_diff %d\n", |
767 | rx_status.signal, rx_stats_sig_avg, | |
768 | rx_stats_noise_diff); | |
b481de9c | 769 | |
b481de9c ZY |
770 | header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); |
771 | ||
bb8c093b | 772 | network_packet = iwl3945_is_network_packet(priv, header); |
b481de9c | 773 | |
ed1b6e99 | 774 | IWL_DEBUG_STATS_LIMIT(priv, "[%c] %d RSSI:%d Signal:%u, Rate:%u\n", |
17744ff6 TW |
775 | network_packet ? '*' : ' ', |
776 | le16_to_cpu(rx_hdr->channel), | |
566bfe5a | 777 | rx_status.signal, rx_status.signal, |
ed1b6e99 | 778 | rx_status.rate_idx); |
b481de9c | 779 | |
d08853a3 SO |
780 | /* Set "1" to report good data frames in groups of 100 */ |
781 | iwl3945_dbg_report_frame(priv, pkt, header, 1); | |
20594eb0 | 782 | iwl_dbg_log_rx_data_frame(priv, le16_to_cpu(rx_hdr->len), header); |
b481de9c ZY |
783 | |
784 | if (network_packet) { | |
e99f168c JB |
785 | priv->_3945.last_beacon_time = |
786 | le32_to_cpu(rx_end->beacon_timestamp); | |
787 | priv->_3945.last_tsf = le64_to_cpu(rx_end->timestamp); | |
788 | priv->_3945.last_rx_rssi = rx_status.signal; | |
b481de9c ZY |
789 | } |
790 | ||
12e5e22d | 791 | iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status); |
b481de9c ZY |
792 | } |
793 | ||
7aaa1d79 SO |
794 | int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, |
795 | struct iwl_tx_queue *txq, | |
796 | dma_addr_t addr, u16 len, u8 reset, u8 pad) | |
b481de9c ZY |
797 | { |
798 | int count; | |
7aaa1d79 | 799 | struct iwl_queue *q; |
59606ffa | 800 | struct iwl3945_tfd *tfd, *tfd_tmp; |
7aaa1d79 SO |
801 | |
802 | q = &txq->q; | |
59606ffa SO |
803 | tfd_tmp = (struct iwl3945_tfd *)txq->tfds; |
804 | tfd = &tfd_tmp[q->write_ptr]; | |
7aaa1d79 SO |
805 | |
806 | if (reset) | |
807 | memset(tfd, 0, sizeof(*tfd)); | |
b481de9c ZY |
808 | |
809 | count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); | |
b481de9c ZY |
810 | |
811 | if ((count >= NUM_TFD_CHUNKS) || (count < 0)) { | |
15b1687c | 812 | IWL_ERR(priv, "Error can not send more than %d chunks\n", |
b481de9c ZY |
813 | NUM_TFD_CHUNKS); |
814 | return -EINVAL; | |
815 | } | |
816 | ||
dbb6654c WT |
817 | tfd->tbs[count].addr = cpu_to_le32(addr); |
818 | tfd->tbs[count].len = cpu_to_le32(len); | |
b481de9c ZY |
819 | |
820 | count++; | |
821 | ||
822 | tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) | | |
823 | TFD_CTL_PAD_SET(pad)); | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | /** | |
bb8c093b | 829 | * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr] |
b481de9c ZY |
830 | * |
831 | * Does NOT advance any indexes | |
832 | */ | |
7aaa1d79 | 833 | void iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) |
b481de9c | 834 | { |
59606ffa | 835 | struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)txq->tfds; |
fd9377ee RC |
836 | int index = txq->q.read_ptr; |
837 | struct iwl3945_tfd *tfd = &tfd_tmp[index]; | |
b481de9c ZY |
838 | struct pci_dev *dev = priv->pci_dev; |
839 | int i; | |
840 | int counter; | |
841 | ||
b481de9c | 842 | /* sanity check */ |
dbb6654c | 843 | counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); |
b481de9c | 844 | if (counter > NUM_TFD_CHUNKS) { |
15b1687c | 845 | IWL_ERR(priv, "Too many chunks: %i\n", counter); |
b481de9c | 846 | /* @todo issue fatal error, it is quite serious situation */ |
7aaa1d79 | 847 | return; |
b481de9c ZY |
848 | } |
849 | ||
fd9377ee RC |
850 | /* Unmap tx_cmd */ |
851 | if (counter) | |
852 | pci_unmap_single(dev, | |
c2acea8e JB |
853 | pci_unmap_addr(&txq->meta[index], mapping), |
854 | pci_unmap_len(&txq->meta[index], len), | |
fd9377ee RC |
855 | PCI_DMA_TODEVICE); |
856 | ||
b481de9c ZY |
857 | /* unmap chunks if any */ |
858 | ||
859 | for (i = 1; i < counter; i++) { | |
dbb6654c WT |
860 | pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr), |
861 | le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE); | |
fc4b6853 TW |
862 | if (txq->txb[txq->q.read_ptr].skb[0]) { |
863 | struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0]; | |
864 | if (txq->txb[txq->q.read_ptr].skb[0]) { | |
b481de9c ZY |
865 | /* Can be called from interrupt context */ |
866 | dev_kfree_skb_any(skb); | |
fc4b6853 | 867 | txq->txb[txq->q.read_ptr].skb[0] = NULL; |
b481de9c ZY |
868 | } |
869 | } | |
870 | } | |
7aaa1d79 | 871 | return ; |
b481de9c ZY |
872 | } |
873 | ||
b481de9c | 874 | /** |
bb8c093b | 875 | * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD: |
b481de9c ZY |
876 | * |
877 | */ | |
c2acea8e JB |
878 | void iwl3945_hw_build_tx_cmd_rate(struct iwl_priv *priv, |
879 | struct iwl_device_cmd *cmd, | |
880 | struct ieee80211_tx_info *info, | |
881 | struct ieee80211_hdr *hdr, | |
882 | int sta_id, int tx_id) | |
b481de9c | 883 | { |
e039fa4a | 884 | u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value; |
1d79e53c | 885 | u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT_3945); |
b481de9c ZY |
886 | u16 rate_mask; |
887 | int rate; | |
888 | u8 rts_retry_limit; | |
889 | u8 data_retry_limit; | |
890 | __le32 tx_flags; | |
fd7c8a40 | 891 | __le16 fc = hdr->frame_control; |
9744c91f | 892 | struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload; |
b481de9c | 893 | |
bb8c093b | 894 | rate = iwl3945_rates[rate_index].plcp; |
9744c91f | 895 | tx_flags = tx_cmd->tx_flags; |
b481de9c ZY |
896 | |
897 | /* We need to figure out how to get the sta->supp_rates while | |
e039fa4a | 898 | * in this running context */ |
b481de9c ZY |
899 | rate_mask = IWL_RATES_MASK; |
900 | ||
768db982 AK |
901 | |
902 | /* Set retry limit on DATA packets and Probe Responses*/ | |
903 | if (ieee80211_is_probe_resp(fc)) | |
904 | data_retry_limit = 3; | |
905 | else | |
906 | data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
907 | tx_cmd->data_retry_limit = data_retry_limit; | |
908 | ||
b481de9c ZY |
909 | if (tx_id >= IWL_CMD_QUEUE_NUM) |
910 | rts_retry_limit = 3; | |
911 | else | |
912 | rts_retry_limit = 7; | |
913 | ||
768db982 AK |
914 | if (data_retry_limit < rts_retry_limit) |
915 | rts_retry_limit = data_retry_limit; | |
916 | tx_cmd->rts_retry_limit = rts_retry_limit; | |
b481de9c | 917 | |
fd7c8a40 HH |
918 | if (ieee80211_is_mgmt(fc)) { |
919 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
920 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
921 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
922 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
923 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
b481de9c ZY |
924 | if (tx_flags & TX_CMD_FLG_RTS_MSK) { |
925 | tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
926 | tx_flags |= TX_CMD_FLG_CTS_MSK; | |
927 | } | |
928 | break; | |
929 | default: | |
930 | break; | |
931 | } | |
932 | } | |
933 | ||
9744c91f AK |
934 | tx_cmd->rate = rate; |
935 | tx_cmd->tx_flags = tx_flags; | |
b481de9c ZY |
936 | |
937 | /* OFDM */ | |
9744c91f | 938 | tx_cmd->supp_rates[0] = |
14577f23 | 939 | ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF; |
b481de9c ZY |
940 | |
941 | /* CCK */ | |
9744c91f | 942 | tx_cmd->supp_rates[1] = (rate_mask & 0xF); |
b481de9c | 943 | |
e1623446 | 944 | IWL_DEBUG_RATE(priv, "Tx sta id: %d, rate: %d (plcp), flags: 0x%4X " |
b481de9c | 945 | "cck/ofdm mask: 0x%x/0x%x\n", sta_id, |
9744c91f AK |
946 | tx_cmd->rate, le32_to_cpu(tx_cmd->tx_flags), |
947 | tx_cmd->supp_rates[1], tx_cmd->supp_rates[0]); | |
b481de9c ZY |
948 | } |
949 | ||
9c5ac091 | 950 | static u8 iwl3945_sync_sta(struct iwl_priv *priv, int sta_id, u16 tx_rate) |
b481de9c ZY |
951 | { |
952 | unsigned long flags_spin; | |
c587de0b | 953 | struct iwl_station_entry *station; |
b481de9c ZY |
954 | |
955 | if (sta_id == IWL_INVALID_STATION) | |
956 | return IWL_INVALID_STATION; | |
957 | ||
958 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
c587de0b | 959 | station = &priv->stations[sta_id]; |
b481de9c ZY |
960 | |
961 | station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK; | |
962 | station->sta.rate_n_flags = cpu_to_le16(tx_rate); | |
b481de9c | 963 | station->sta.mode = STA_CONTROL_MODIFY_MSK; |
9c5ac091 | 964 | iwl_send_add_sta(priv, &station->sta, CMD_ASYNC); |
b481de9c ZY |
965 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
966 | ||
e1623446 | 967 | IWL_DEBUG_RATE(priv, "SCALE sync station %d to rate %d\n", |
b481de9c ZY |
968 | sta_id, tx_rate); |
969 | return sta_id; | |
970 | } | |
971 | ||
854682ed | 972 | static int iwl3945_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src) |
b481de9c | 973 | { |
854682ed | 974 | if (src == IWL_PWR_SRC_VAUX) { |
3fdb68de | 975 | if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) { |
5d49f498 | 976 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
977 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
978 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
b481de9c | 979 | |
5d49f498 | 980 | iwl_poll_bit(priv, CSR_GPIO_IN, |
b481de9c ZY |
981 | CSR_GPIO_IN_VAL_VAUX_PWR_SRC, |
982 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); | |
3fdb68de | 983 | } |
b481de9c | 984 | } else { |
5d49f498 | 985 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
986 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
987 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
988 | ||
5d49f498 | 989 | iwl_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC, |
b481de9c ZY |
990 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */ |
991 | } | |
b481de9c | 992 | |
a8b50a0a | 993 | return 0; |
b481de9c ZY |
994 | } |
995 | ||
4a8a4322 | 996 | static int iwl3945_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) |
b481de9c | 997 | { |
5d49f498 | 998 | iwl_write_direct32(priv, FH39_RCSR_RBD_BASE(0), rxq->dma_addr); |
8cd812bc | 999 | iwl_write_direct32(priv, FH39_RCSR_RPTR_ADDR(0), rxq->rb_stts_dma); |
5d49f498 AK |
1000 | iwl_write_direct32(priv, FH39_RCSR_WPTR(0), 0); |
1001 | iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), | |
bddadf86 TW |
1002 | FH39_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE | |
1003 | FH39_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE | | |
1004 | FH39_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN | | |
1005 | FH39_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 | | |
1006 | (RX_QUEUE_SIZE_LOG << FH39_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) | | |
1007 | FH39_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST | | |
1008 | (1 << FH39_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) | | |
1009 | FH39_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH); | |
b481de9c ZY |
1010 | |
1011 | /* fake read to flush all prev I/O */ | |
5d49f498 | 1012 | iwl_read_direct32(priv, FH39_RSSR_CTRL); |
b481de9c | 1013 | |
b481de9c ZY |
1014 | return 0; |
1015 | } | |
1016 | ||
4a8a4322 | 1017 | static int iwl3945_tx_reset(struct iwl_priv *priv) |
b481de9c | 1018 | { |
b481de9c ZY |
1019 | |
1020 | /* bypass mode */ | |
5d49f498 | 1021 | iwl_write_prph(priv, ALM_SCD_MODE_REG, 0x2); |
b481de9c ZY |
1022 | |
1023 | /* RA 0 is active */ | |
5d49f498 | 1024 | iwl_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01); |
b481de9c ZY |
1025 | |
1026 | /* all 6 fifo are active */ | |
5d49f498 | 1027 | iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f); |
b481de9c | 1028 | |
5d49f498 AK |
1029 | iwl_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000); |
1030 | iwl_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002); | |
1031 | iwl_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004); | |
1032 | iwl_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005); | |
b481de9c | 1033 | |
5d49f498 | 1034 | iwl_write_direct32(priv, FH39_TSSR_CBB_BASE, |
ee525d13 | 1035 | priv->_3945.shared_phys); |
b481de9c | 1036 | |
5d49f498 | 1037 | iwl_write_direct32(priv, FH39_TSSR_MSG_CONFIG, |
bddadf86 TW |
1038 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON | |
1039 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON | | |
1040 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B | | |
1041 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON | | |
1042 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON | | |
1043 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH | | |
1044 | FH39_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH); | |
b481de9c | 1045 | |
b481de9c ZY |
1046 | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | /** | |
1051 | * iwl3945_txq_ctx_reset - Reset TX queue context | |
1052 | * | |
1053 | * Destroys all DMA structures and initialize them again | |
1054 | */ | |
4a8a4322 | 1055 | static int iwl3945_txq_ctx_reset(struct iwl_priv *priv) |
b481de9c ZY |
1056 | { |
1057 | int rc; | |
1058 | int txq_id, slots_num; | |
1059 | ||
bb8c093b | 1060 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c | 1061 | |
88804e2b WYG |
1062 | /* allocate tx queue structure */ |
1063 | rc = iwl_alloc_txq_mem(priv); | |
1064 | if (rc) | |
1065 | return rc; | |
1066 | ||
b481de9c ZY |
1067 | /* Tx CMD queue */ |
1068 | rc = iwl3945_tx_reset(priv); | |
1069 | if (rc) | |
1070 | goto error; | |
1071 | ||
1072 | /* Tx queue(s) */ | |
5905a1aa | 1073 | for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) { |
b481de9c ZY |
1074 | slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ? |
1075 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; | |
a8e74e27 SO |
1076 | rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num, |
1077 | txq_id); | |
b481de9c | 1078 | if (rc) { |
15b1687c | 1079 | IWL_ERR(priv, "Tx %d queue init failed\n", txq_id); |
b481de9c ZY |
1080 | goto error; |
1081 | } | |
1082 | } | |
1083 | ||
1084 | return rc; | |
1085 | ||
1086 | error: | |
bb8c093b | 1087 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1088 | return rc; |
1089 | } | |
1090 | ||
fadb3582 | 1091 | |
f33269b8 | 1092 | /* |
fadb3582 BC |
1093 | * Start up 3945's basic functionality after it has been reset |
1094 | * (e.g. after platform boot, or shutdown via iwl_apm_stop()) | |
f33269b8 BC |
1095 | * NOTE: This does not load uCode nor start the embedded processor |
1096 | */ | |
01ec616d | 1097 | static int iwl3945_apm_init(struct iwl_priv *priv) |
b481de9c | 1098 | { |
fadb3582 | 1099 | int ret = iwl_apm_init(priv); |
01ec616d | 1100 | |
f33269b8 BC |
1101 | /* Clear APMG (NIC's internal power management) interrupts */ |
1102 | iwl_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0); | |
1103 | iwl_write_prph(priv, APMG_RTC_INT_STT_REG, 0xFFFFFFFF); | |
1104 | ||
1105 | /* Reset radio chip */ | |
1106 | iwl_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); | |
1107 | udelay(5); | |
1108 | iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); | |
1109 | ||
01ec616d KA |
1110 | return ret; |
1111 | } | |
b481de9c | 1112 | |
01ec616d KA |
1113 | static void iwl3945_nic_config(struct iwl_priv *priv) |
1114 | { | |
e6148917 | 1115 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
01ec616d KA |
1116 | unsigned long flags; |
1117 | u8 rev_id = 0; | |
b481de9c | 1118 | |
b481de9c ZY |
1119 | spin_lock_irqsave(&priv->lock, flags); |
1120 | ||
43121432 AK |
1121 | /* Determine HW type */ |
1122 | pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); | |
1123 | ||
1124 | IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", rev_id); | |
1125 | ||
b481de9c | 1126 | if (rev_id & PCI_CFG_REV_ID_BIT_RTP) |
91dd6c27 | 1127 | IWL_DEBUG_INFO(priv, "RTP type\n"); |
b481de9c | 1128 | else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) { |
e1623446 | 1129 | IWL_DEBUG_INFO(priv, "3945 RADIO-MB type\n"); |
5d49f498 | 1130 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1131 | CSR39_HW_IF_CONFIG_REG_BIT_3945_MB); |
b481de9c | 1132 | } else { |
e1623446 | 1133 | IWL_DEBUG_INFO(priv, "3945 RADIO-MM type\n"); |
5d49f498 | 1134 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1135 | CSR39_HW_IF_CONFIG_REG_BIT_3945_MM); |
b481de9c ZY |
1136 | } |
1137 | ||
e6148917 | 1138 | if (EEPROM_SKU_CAP_OP_MODE_MRC == eeprom->sku_cap) { |
e1623446 | 1139 | IWL_DEBUG_INFO(priv, "SKU OP mode is mrc\n"); |
5d49f498 | 1140 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1141 | CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC); |
b481de9c | 1142 | } else |
e1623446 | 1143 | IWL_DEBUG_INFO(priv, "SKU OP mode is basic\n"); |
b481de9c | 1144 | |
e6148917 | 1145 | if ((eeprom->board_revision & 0xF0) == 0xD0) { |
e1623446 | 1146 | IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n", |
e6148917 | 1147 | eeprom->board_revision); |
5d49f498 | 1148 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1149 | CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
b481de9c | 1150 | } else { |
e1623446 | 1151 | IWL_DEBUG_INFO(priv, "3945ABG revision is 0x%X\n", |
e6148917 | 1152 | eeprom->board_revision); |
5d49f498 | 1153 | iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1154 | CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
b481de9c ZY |
1155 | } |
1156 | ||
e6148917 | 1157 | if (eeprom->almgor_m_version <= 1) { |
5d49f498 | 1158 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1159 | CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A); |
e1623446 | 1160 | IWL_DEBUG_INFO(priv, "Card M type A version is 0x%X\n", |
e6148917 | 1161 | eeprom->almgor_m_version); |
b481de9c | 1162 | } else { |
e1623446 | 1163 | IWL_DEBUG_INFO(priv, "Card M type B version is 0x%X\n", |
e6148917 | 1164 | eeprom->almgor_m_version); |
5d49f498 | 1165 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1166 | CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B); |
b481de9c ZY |
1167 | } |
1168 | spin_unlock_irqrestore(&priv->lock, flags); | |
1169 | ||
e6148917 | 1170 | if (eeprom->sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) |
e1623446 | 1171 | IWL_DEBUG_RF_KILL(priv, "SW RF KILL supported in EEPROM.\n"); |
b481de9c | 1172 | |
e6148917 | 1173 | if (eeprom->sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) |
e1623446 | 1174 | IWL_DEBUG_RF_KILL(priv, "HW RF KILL supported in EEPROM.\n"); |
01ec616d KA |
1175 | } |
1176 | ||
1177 | int iwl3945_hw_nic_init(struct iwl_priv *priv) | |
1178 | { | |
01ec616d KA |
1179 | int rc; |
1180 | unsigned long flags; | |
1181 | struct iwl_rx_queue *rxq = &priv->rxq; | |
1182 | ||
1183 | spin_lock_irqsave(&priv->lock, flags); | |
1184 | priv->cfg->ops->lib->apm_ops.init(priv); | |
1185 | spin_unlock_irqrestore(&priv->lock, flags); | |
1186 | ||
854682ed | 1187 | rc = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN); |
1e680233 | 1188 | if (rc) |
854682ed KA |
1189 | return rc; |
1190 | ||
01ec616d | 1191 | priv->cfg->ops->lib->apm_ops.config(priv); |
b481de9c ZY |
1192 | |
1193 | /* Allocate the RX queue, or reset if it is already allocated */ | |
1194 | if (!rxq->bd) { | |
51af3d3f | 1195 | rc = iwl_rx_queue_alloc(priv); |
b481de9c | 1196 | if (rc) { |
15b1687c | 1197 | IWL_ERR(priv, "Unable to initialize Rx queue\n"); |
b481de9c ZY |
1198 | return -ENOMEM; |
1199 | } | |
1200 | } else | |
df833b1d | 1201 | iwl3945_rx_queue_reset(priv, rxq); |
b481de9c | 1202 | |
bb8c093b | 1203 | iwl3945_rx_replenish(priv); |
b481de9c ZY |
1204 | |
1205 | iwl3945_rx_init(priv, rxq); | |
1206 | ||
b481de9c ZY |
1207 | |
1208 | /* Look at using this instead: | |
1209 | rxq->need_update = 1; | |
141c43a3 | 1210 | iwl_rx_queue_update_write_ptr(priv, rxq); |
b481de9c ZY |
1211 | */ |
1212 | ||
5d49f498 | 1213 | iwl_write_direct32(priv, FH39_RCSR_WPTR(0), rxq->write & ~7); |
b481de9c ZY |
1214 | |
1215 | rc = iwl3945_txq_ctx_reset(priv); | |
1216 | if (rc) | |
1217 | return rc; | |
1218 | ||
1219 | set_bit(STATUS_INIT, &priv->status); | |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | /** | |
bb8c093b | 1225 | * iwl3945_hw_txq_ctx_free - Free TXQ Context |
b481de9c ZY |
1226 | * |
1227 | * Destroy all TX DMA queues and structures | |
1228 | */ | |
4a8a4322 | 1229 | void iwl3945_hw_txq_ctx_free(struct iwl_priv *priv) |
b481de9c ZY |
1230 | { |
1231 | int txq_id; | |
1232 | ||
1233 | /* Tx queues */ | |
88804e2b WYG |
1234 | if (priv->txq) |
1235 | for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; | |
1236 | txq_id++) | |
1237 | if (txq_id == IWL_CMD_QUEUE_NUM) | |
1238 | iwl_cmd_queue_free(priv); | |
1239 | else | |
1240 | iwl_tx_queue_free(priv, txq_id); | |
3e5d238f | 1241 | |
88804e2b WYG |
1242 | /* free tx queue structure */ |
1243 | iwl_free_txq_mem(priv); | |
b481de9c ZY |
1244 | } |
1245 | ||
4a8a4322 | 1246 | void iwl3945_hw_txq_ctx_stop(struct iwl_priv *priv) |
b481de9c | 1247 | { |
bddadf86 | 1248 | int txq_id; |
b481de9c ZY |
1249 | |
1250 | /* stop SCD */ | |
5d49f498 | 1251 | iwl_write_prph(priv, ALM_SCD_MODE_REG, 0); |
1f80989e | 1252 | iwl_write_prph(priv, ALM_SCD_TXFACT_REG, 0); |
b481de9c ZY |
1253 | |
1254 | /* reset TFD queues */ | |
5905a1aa | 1255 | for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) { |
5d49f498 AK |
1256 | iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), 0x0); |
1257 | iwl_poll_direct_bit(priv, FH39_TSSR_TX_STATUS, | |
bddadf86 | 1258 | FH39_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(txq_id), |
b481de9c ZY |
1259 | 1000); |
1260 | } | |
1261 | ||
bb8c093b | 1262 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1263 | } |
1264 | ||
b481de9c | 1265 | /** |
bb8c093b | 1266 | * iwl3945_hw_reg_adjust_power_by_temp |
bbc5807b IS |
1267 | * return index delta into power gain settings table |
1268 | */ | |
bb8c093b | 1269 | static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading) |
b481de9c ZY |
1270 | { |
1271 | return (new_reading - old_reading) * (-11) / 100; | |
1272 | } | |
1273 | ||
1274 | /** | |
bb8c093b | 1275 | * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range |
b481de9c | 1276 | */ |
bb8c093b | 1277 | static inline int iwl3945_hw_reg_temp_out_of_range(int temperature) |
b481de9c | 1278 | { |
3ac7f146 | 1279 | return ((temperature < -260) || (temperature > 25)) ? 1 : 0; |
b481de9c ZY |
1280 | } |
1281 | ||
4a8a4322 | 1282 | int iwl3945_hw_get_temperature(struct iwl_priv *priv) |
b481de9c | 1283 | { |
5d49f498 | 1284 | return iwl_read32(priv, CSR_UCODE_DRV_GP2); |
b481de9c ZY |
1285 | } |
1286 | ||
1287 | /** | |
bb8c093b | 1288 | * iwl3945_hw_reg_txpower_get_temperature |
bbc5807b IS |
1289 | * get the current temperature by reading from NIC |
1290 | */ | |
4a8a4322 | 1291 | static int iwl3945_hw_reg_txpower_get_temperature(struct iwl_priv *priv) |
b481de9c | 1292 | { |
e6148917 | 1293 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
b481de9c ZY |
1294 | int temperature; |
1295 | ||
bb8c093b | 1296 | temperature = iwl3945_hw_get_temperature(priv); |
b481de9c ZY |
1297 | |
1298 | /* driver's okay range is -260 to +25. | |
1299 | * human readable okay range is 0 to +285 */ | |
e1623446 | 1300 | IWL_DEBUG_INFO(priv, "Temperature: %d\n", temperature + IWL_TEMP_CONVERT); |
b481de9c ZY |
1301 | |
1302 | /* handle insane temp reading */ | |
bb8c093b | 1303 | if (iwl3945_hw_reg_temp_out_of_range(temperature)) { |
15b1687c | 1304 | IWL_ERR(priv, "Error bad temperature value %d\n", temperature); |
b481de9c ZY |
1305 | |
1306 | /* if really really hot(?), | |
1307 | * substitute the 3rd band/group's temp measured at factory */ | |
1308 | if (priv->last_temperature > 100) | |
e6148917 | 1309 | temperature = eeprom->groups[2].temperature; |
b481de9c ZY |
1310 | else /* else use most recent "sane" value from driver */ |
1311 | temperature = priv->last_temperature; | |
1312 | } | |
1313 | ||
1314 | return temperature; /* raw, not "human readable" */ | |
1315 | } | |
1316 | ||
1317 | /* Adjust Txpower only if temperature variance is greater than threshold. | |
1318 | * | |
1319 | * Both are lower than older versions' 9 degrees */ | |
1320 | #define IWL_TEMPERATURE_LIMIT_TIMER 6 | |
1321 | ||
1322 | /** | |
1323 | * is_temp_calib_needed - determines if new calibration is needed | |
1324 | * | |
1325 | * records new temperature in tx_mgr->temperature. | |
1326 | * replaces tx_mgr->last_temperature *only* if calib needed | |
1327 | * (assumes caller will actually do the calibration!). */ | |
4a8a4322 | 1328 | static int is_temp_calib_needed(struct iwl_priv *priv) |
b481de9c ZY |
1329 | { |
1330 | int temp_diff; | |
1331 | ||
bb8c093b | 1332 | priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
1333 | temp_diff = priv->temperature - priv->last_temperature; |
1334 | ||
1335 | /* get absolute value */ | |
1336 | if (temp_diff < 0) { | |
e1623446 | 1337 | IWL_DEBUG_POWER(priv, "Getting cooler, delta %d,\n", temp_diff); |
b481de9c ZY |
1338 | temp_diff = -temp_diff; |
1339 | } else if (temp_diff == 0) | |
e1623446 | 1340 | IWL_DEBUG_POWER(priv, "Same temp,\n"); |
b481de9c | 1341 | else |
e1623446 | 1342 | IWL_DEBUG_POWER(priv, "Getting warmer, delta %d,\n", temp_diff); |
b481de9c ZY |
1343 | |
1344 | /* if we don't need calibration, *don't* update last_temperature */ | |
1345 | if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) { | |
e1623446 | 1346 | IWL_DEBUG_POWER(priv, "Timed thermal calib not needed\n"); |
b481de9c ZY |
1347 | return 0; |
1348 | } | |
1349 | ||
e1623446 | 1350 | IWL_DEBUG_POWER(priv, "Timed thermal calib needed\n"); |
b481de9c ZY |
1351 | |
1352 | /* assume that caller will actually do calib ... | |
1353 | * update the "last temperature" value */ | |
1354 | priv->last_temperature = priv->temperature; | |
1355 | return 1; | |
1356 | } | |
1357 | ||
1358 | #define IWL_MAX_GAIN_ENTRIES 78 | |
1359 | #define IWL_CCK_FROM_OFDM_POWER_DIFF -5 | |
1360 | #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10) | |
1361 | ||
1362 | /* radio and DSP power table, each step is 1/2 dB. | |
1363 | * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */ | |
bb8c093b | 1364 | static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = { |
b481de9c ZY |
1365 | { |
1366 | {251, 127}, /* 2.4 GHz, highest power */ | |
1367 | {251, 127}, | |
1368 | {251, 127}, | |
1369 | {251, 127}, | |
1370 | {251, 125}, | |
1371 | {251, 110}, | |
1372 | {251, 105}, | |
1373 | {251, 98}, | |
1374 | {187, 125}, | |
1375 | {187, 115}, | |
1376 | {187, 108}, | |
1377 | {187, 99}, | |
1378 | {243, 119}, | |
1379 | {243, 111}, | |
1380 | {243, 105}, | |
1381 | {243, 97}, | |
1382 | {243, 92}, | |
1383 | {211, 106}, | |
1384 | {211, 100}, | |
1385 | {179, 120}, | |
1386 | {179, 113}, | |
1387 | {179, 107}, | |
1388 | {147, 125}, | |
1389 | {147, 119}, | |
1390 | {147, 112}, | |
1391 | {147, 106}, | |
1392 | {147, 101}, | |
1393 | {147, 97}, | |
1394 | {147, 91}, | |
1395 | {115, 107}, | |
1396 | {235, 121}, | |
1397 | {235, 115}, | |
1398 | {235, 109}, | |
1399 | {203, 127}, | |
1400 | {203, 121}, | |
1401 | {203, 115}, | |
1402 | {203, 108}, | |
1403 | {203, 102}, | |
1404 | {203, 96}, | |
1405 | {203, 92}, | |
1406 | {171, 110}, | |
1407 | {171, 104}, | |
1408 | {171, 98}, | |
1409 | {139, 116}, | |
1410 | {227, 125}, | |
1411 | {227, 119}, | |
1412 | {227, 113}, | |
1413 | {227, 107}, | |
1414 | {227, 101}, | |
1415 | {227, 96}, | |
1416 | {195, 113}, | |
1417 | {195, 106}, | |
1418 | {195, 102}, | |
1419 | {195, 95}, | |
1420 | {163, 113}, | |
1421 | {163, 106}, | |
1422 | {163, 102}, | |
1423 | {163, 95}, | |
1424 | {131, 113}, | |
1425 | {131, 106}, | |
1426 | {131, 102}, | |
1427 | {131, 95}, | |
1428 | {99, 113}, | |
1429 | {99, 106}, | |
1430 | {99, 102}, | |
1431 | {99, 95}, | |
1432 | {67, 113}, | |
1433 | {67, 106}, | |
1434 | {67, 102}, | |
1435 | {67, 95}, | |
1436 | {35, 113}, | |
1437 | {35, 106}, | |
1438 | {35, 102}, | |
1439 | {35, 95}, | |
1440 | {3, 113}, | |
1441 | {3, 106}, | |
1442 | {3, 102}, | |
1443 | {3, 95} }, /* 2.4 GHz, lowest power */ | |
1444 | { | |
1445 | {251, 127}, /* 5.x GHz, highest power */ | |
1446 | {251, 120}, | |
1447 | {251, 114}, | |
1448 | {219, 119}, | |
1449 | {219, 101}, | |
1450 | {187, 113}, | |
1451 | {187, 102}, | |
1452 | {155, 114}, | |
1453 | {155, 103}, | |
1454 | {123, 117}, | |
1455 | {123, 107}, | |
1456 | {123, 99}, | |
1457 | {123, 92}, | |
1458 | {91, 108}, | |
1459 | {59, 125}, | |
1460 | {59, 118}, | |
1461 | {59, 109}, | |
1462 | {59, 102}, | |
1463 | {59, 96}, | |
1464 | {59, 90}, | |
1465 | {27, 104}, | |
1466 | {27, 98}, | |
1467 | {27, 92}, | |
1468 | {115, 118}, | |
1469 | {115, 111}, | |
1470 | {115, 104}, | |
1471 | {83, 126}, | |
1472 | {83, 121}, | |
1473 | {83, 113}, | |
1474 | {83, 105}, | |
1475 | {83, 99}, | |
1476 | {51, 118}, | |
1477 | {51, 111}, | |
1478 | {51, 104}, | |
1479 | {51, 98}, | |
1480 | {19, 116}, | |
1481 | {19, 109}, | |
1482 | {19, 102}, | |
1483 | {19, 98}, | |
1484 | {19, 93}, | |
1485 | {171, 113}, | |
1486 | {171, 107}, | |
1487 | {171, 99}, | |
1488 | {139, 120}, | |
1489 | {139, 113}, | |
1490 | {139, 107}, | |
1491 | {139, 99}, | |
1492 | {107, 120}, | |
1493 | {107, 113}, | |
1494 | {107, 107}, | |
1495 | {107, 99}, | |
1496 | {75, 120}, | |
1497 | {75, 113}, | |
1498 | {75, 107}, | |
1499 | {75, 99}, | |
1500 | {43, 120}, | |
1501 | {43, 113}, | |
1502 | {43, 107}, | |
1503 | {43, 99}, | |
1504 | {11, 120}, | |
1505 | {11, 113}, | |
1506 | {11, 107}, | |
1507 | {11, 99}, | |
1508 | {131, 107}, | |
1509 | {131, 99}, | |
1510 | {99, 120}, | |
1511 | {99, 113}, | |
1512 | {99, 107}, | |
1513 | {99, 99}, | |
1514 | {67, 120}, | |
1515 | {67, 113}, | |
1516 | {67, 107}, | |
1517 | {67, 99}, | |
1518 | {35, 120}, | |
1519 | {35, 113}, | |
1520 | {35, 107}, | |
1521 | {35, 99}, | |
1522 | {3, 120} } /* 5.x GHz, lowest power */ | |
1523 | }; | |
1524 | ||
bb8c093b | 1525 | static inline u8 iwl3945_hw_reg_fix_power_index(int index) |
b481de9c ZY |
1526 | { |
1527 | if (index < 0) | |
1528 | return 0; | |
1529 | if (index >= IWL_MAX_GAIN_ENTRIES) | |
1530 | return IWL_MAX_GAIN_ENTRIES - 1; | |
1531 | return (u8) index; | |
1532 | } | |
1533 | ||
1534 | /* Kick off thermal recalibration check every 60 seconds */ | |
1535 | #define REG_RECALIB_PERIOD (60) | |
1536 | ||
1537 | /** | |
bb8c093b | 1538 | * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests |
b481de9c ZY |
1539 | * |
1540 | * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK) | |
1541 | * or 6 Mbit (OFDM) rates. | |
1542 | */ | |
4a8a4322 | 1543 | static void iwl3945_hw_reg_set_scan_power(struct iwl_priv *priv, u32 scan_tbl_index, |
b481de9c | 1544 | s32 rate_index, const s8 *clip_pwrs, |
d20b3c65 | 1545 | struct iwl_channel_info *ch_info, |
b481de9c ZY |
1546 | int band_index) |
1547 | { | |
bb8c093b | 1548 | struct iwl3945_scan_power_info *scan_power_info; |
b481de9c ZY |
1549 | s8 power; |
1550 | u8 power_index; | |
1551 | ||
1552 | scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index]; | |
1553 | ||
1554 | /* use this channel group's 6Mbit clipping/saturation pwr, | |
1555 | * but cap at regulatory scan power restriction (set during init | |
1556 | * based on eeprom channel data) for this channel. */ | |
14577f23 | 1557 | power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]); |
b481de9c ZY |
1558 | |
1559 | /* further limit to user's max power preference. | |
1560 | * FIXME: Other spectrum management power limitations do not | |
1561 | * seem to apply?? */ | |
62ea9c5b | 1562 | power = min(power, priv->tx_power_user_lmt); |
b481de9c ZY |
1563 | scan_power_info->requested_power = power; |
1564 | ||
1565 | /* find difference between new scan *power* and current "normal" | |
1566 | * Tx *power* for 6Mb. Use this difference (x2) to adjust the | |
1567 | * current "normal" temperature-compensated Tx power *index* for | |
1568 | * this rate (1Mb or 6Mb) to yield new temp-compensated scan power | |
1569 | * *index*. */ | |
1570 | power_index = ch_info->power_info[rate_index].power_table_index | |
1571 | - (power - ch_info->power_info | |
14577f23 | 1572 | [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2; |
b481de9c ZY |
1573 | |
1574 | /* store reference index that we use when adjusting *all* scan | |
1575 | * powers. So we can accommodate user (all channel) or spectrum | |
1576 | * management (single channel) power changes "between" temperature | |
1577 | * feedback compensation procedures. | |
1578 | * don't force fit this reference index into gain table; it may be a | |
1579 | * negative number. This will help avoid errors when we're at | |
1580 | * the lower bounds (highest gains, for warmest temperatures) | |
1581 | * of the table. */ | |
1582 | ||
1583 | /* don't exceed table bounds for "real" setting */ | |
bb8c093b | 1584 | power_index = iwl3945_hw_reg_fix_power_index(power_index); |
b481de9c ZY |
1585 | |
1586 | scan_power_info->power_table_index = power_index; | |
1587 | scan_power_info->tpc.tx_gain = | |
1588 | power_gain_table[band_index][power_index].tx_gain; | |
1589 | scan_power_info->tpc.dsp_atten = | |
1590 | power_gain_table[band_index][power_index].dsp_atten; | |
1591 | } | |
1592 | ||
1593 | /** | |
75bcfae9 | 1594 | * iwl3945_send_tx_power - fill in Tx Power command with gain settings |
b481de9c ZY |
1595 | * |
1596 | * Configures power settings for all rates for the current channel, | |
1597 | * using values from channel info struct, and send to NIC | |
1598 | */ | |
dfb39e82 | 1599 | static int iwl3945_send_tx_power(struct iwl_priv *priv) |
b481de9c | 1600 | { |
14577f23 | 1601 | int rate_idx, i; |
d20b3c65 | 1602 | const struct iwl_channel_info *ch_info = NULL; |
bb8c093b | 1603 | struct iwl3945_txpowertable_cmd txpower = { |
8ccde88a | 1604 | .channel = priv->active_rxon.channel, |
b481de9c ZY |
1605 | }; |
1606 | ||
8318d78a | 1607 | txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1; |
e6148917 | 1608 | ch_info = iwl_get_channel_info(priv, |
8318d78a | 1609 | priv->band, |
8ccde88a | 1610 | le16_to_cpu(priv->active_rxon.channel)); |
b481de9c | 1611 | if (!ch_info) { |
15b1687c WT |
1612 | IWL_ERR(priv, |
1613 | "Failed to get channel info for channel %d [%d]\n", | |
8ccde88a | 1614 | le16_to_cpu(priv->active_rxon.channel), priv->band); |
b481de9c ZY |
1615 | return -EINVAL; |
1616 | } | |
1617 | ||
1618 | if (!is_channel_valid(ch_info)) { | |
e1623446 | 1619 | IWL_DEBUG_POWER(priv, "Not calling TX_PWR_TABLE_CMD on " |
b481de9c ZY |
1620 | "non-Tx channel.\n"); |
1621 | return 0; | |
1622 | } | |
1623 | ||
1624 | /* fill cmd with power settings for all rates for current channel */ | |
14577f23 MA |
1625 | /* Fill OFDM rate */ |
1626 | for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0; | |
d9829a67 | 1627 | rate_idx <= IWL39_LAST_OFDM_RATE; rate_idx++, i++) { |
14577f23 MA |
1628 | |
1629 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1630 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
b481de9c | 1631 | |
e1623446 | 1632 | IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n", |
b481de9c ZY |
1633 | le16_to_cpu(txpower.channel), |
1634 | txpower.band, | |
14577f23 MA |
1635 | txpower.power[i].tpc.tx_gain, |
1636 | txpower.power[i].tpc.dsp_atten, | |
1637 | txpower.power[i].rate); | |
1638 | } | |
1639 | /* Fill CCK rates */ | |
1640 | for (rate_idx = IWL_FIRST_CCK_RATE; | |
1641 | rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) { | |
1642 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1643 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
14577f23 | 1644 | |
e1623446 | 1645 | IWL_DEBUG_POWER(priv, "ch %d:%d rf %d dsp %3d rate code 0x%02x\n", |
14577f23 MA |
1646 | le16_to_cpu(txpower.channel), |
1647 | txpower.band, | |
1648 | txpower.power[i].tpc.tx_gain, | |
1649 | txpower.power[i].tpc.dsp_atten, | |
1650 | txpower.power[i].rate); | |
b481de9c ZY |
1651 | } |
1652 | ||
518099a8 SO |
1653 | return iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, |
1654 | sizeof(struct iwl3945_txpowertable_cmd), | |
1655 | &txpower); | |
b481de9c ZY |
1656 | |
1657 | } | |
1658 | ||
1659 | /** | |
bb8c093b | 1660 | * iwl3945_hw_reg_set_new_power - Configures power tables at new levels |
b481de9c ZY |
1661 | * @ch_info: Channel to update. Uses power_info.requested_power. |
1662 | * | |
1663 | * Replace requested_power and base_power_index ch_info fields for | |
1664 | * one channel. | |
1665 | * | |
1666 | * Called if user or spectrum management changes power preferences. | |
1667 | * Takes into account h/w and modulation limitations (clip power). | |
1668 | * | |
1669 | * This does *not* send anything to NIC, just sets up ch_info for one channel. | |
1670 | * | |
1671 | * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to | |
1672 | * properly fill out the scan powers, and actual h/w gain settings, | |
1673 | * and send changes to NIC | |
1674 | */ | |
4a8a4322 | 1675 | static int iwl3945_hw_reg_set_new_power(struct iwl_priv *priv, |
d20b3c65 | 1676 | struct iwl_channel_info *ch_info) |
b481de9c | 1677 | { |
bb8c093b | 1678 | struct iwl3945_channel_power_info *power_info; |
b481de9c ZY |
1679 | int power_changed = 0; |
1680 | int i; | |
1681 | const s8 *clip_pwrs; | |
1682 | int power; | |
1683 | ||
1684 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
67d613ae | 1685 | clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; |
b481de9c ZY |
1686 | |
1687 | /* Get this channel's rate-to-current-power settings table */ | |
1688 | power_info = ch_info->power_info; | |
1689 | ||
1690 | /* update OFDM Txpower settings */ | |
14577f23 | 1691 | for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; |
b481de9c ZY |
1692 | i++, ++power_info) { |
1693 | int delta_idx; | |
1694 | ||
1695 | /* limit new power to be no more than h/w capability */ | |
1696 | power = min(ch_info->curr_txpow, clip_pwrs[i]); | |
1697 | if (power == power_info->requested_power) | |
1698 | continue; | |
1699 | ||
1700 | /* find difference between old and new requested powers, | |
1701 | * update base (non-temp-compensated) power index */ | |
1702 | delta_idx = (power - power_info->requested_power) * 2; | |
1703 | power_info->base_power_index -= delta_idx; | |
1704 | ||
1705 | /* save new requested power value */ | |
1706 | power_info->requested_power = power; | |
1707 | ||
1708 | power_changed = 1; | |
1709 | } | |
1710 | ||
1711 | /* update CCK Txpower settings, based on OFDM 12M setting ... | |
1712 | * ... all CCK power settings for a given channel are the *same*. */ | |
1713 | if (power_changed) { | |
1714 | power = | |
14577f23 | 1715 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1716 | requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF; |
1717 | ||
bb8c093b | 1718 | /* do all CCK rates' iwl3945_channel_power_info structures */ |
14577f23 | 1719 | for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) { |
b481de9c ZY |
1720 | power_info->requested_power = power; |
1721 | power_info->base_power_index = | |
14577f23 | 1722 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1723 | base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF; |
1724 | ++power_info; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | return 0; | |
1729 | } | |
1730 | ||
1731 | /** | |
bb8c093b | 1732 | * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel |
b481de9c ZY |
1733 | * |
1734 | * NOTE: Returned power limit may be less (but not more) than requested, | |
1735 | * based strictly on regulatory (eeprom and spectrum mgt) limitations | |
1736 | * (no consideration for h/w clipping limitations). | |
1737 | */ | |
d20b3c65 | 1738 | static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl_channel_info *ch_info) |
b481de9c ZY |
1739 | { |
1740 | s8 max_power; | |
1741 | ||
1742 | #if 0 | |
1743 | /* if we're using TGd limits, use lower of TGd or EEPROM */ | |
1744 | if (ch_info->tgd_data.max_power != 0) | |
1745 | max_power = min(ch_info->tgd_data.max_power, | |
1746 | ch_info->eeprom.max_power_avg); | |
1747 | ||
1748 | /* else just use EEPROM limits */ | |
1749 | else | |
1750 | #endif | |
1751 | max_power = ch_info->eeprom.max_power_avg; | |
1752 | ||
1753 | return min(max_power, ch_info->max_power_avg); | |
1754 | } | |
1755 | ||
1756 | /** | |
bb8c093b | 1757 | * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature |
b481de9c ZY |
1758 | * |
1759 | * Compensate txpower settings of *all* channels for temperature. | |
1760 | * This only accounts for the difference between current temperature | |
1761 | * and the factory calibration temperatures, and bases the new settings | |
1762 | * on the channel's base_power_index. | |
1763 | * | |
1764 | * If RxOn is "associated", this sends the new Txpower to NIC! | |
1765 | */ | |
4a8a4322 | 1766 | static int iwl3945_hw_reg_comp_txpower_temp(struct iwl_priv *priv) |
b481de9c | 1767 | { |
d20b3c65 | 1768 | struct iwl_channel_info *ch_info = NULL; |
e6148917 | 1769 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
b481de9c ZY |
1770 | int delta_index; |
1771 | const s8 *clip_pwrs; /* array of h/w max power levels for each rate */ | |
1772 | u8 a_band; | |
1773 | u8 rate_index; | |
1774 | u8 scan_tbl_index; | |
1775 | u8 i; | |
1776 | int ref_temp; | |
1777 | int temperature = priv->temperature; | |
1778 | ||
4e7033ef WYG |
1779 | if (priv->disable_tx_power_cal || |
1780 | test_bit(STATUS_SCANNING, &priv->status)) { | |
1781 | /* do not perform tx power calibration */ | |
1782 | return 0; | |
1783 | } | |
b481de9c ZY |
1784 | /* set up new Tx power info for each and every channel, 2.4 and 5.x */ |
1785 | for (i = 0; i < priv->channel_count; i++) { | |
1786 | ch_info = &priv->channel_info[i]; | |
1787 | a_band = is_channel_a_band(ch_info); | |
1788 | ||
1789 | /* Get this chnlgrp's factory calibration temperature */ | |
e6148917 | 1790 | ref_temp = (s16)eeprom->groups[ch_info->group_index]. |
b481de9c ZY |
1791 | temperature; |
1792 | ||
a96a27f9 | 1793 | /* get power index adjustment based on current and factory |
b481de9c | 1794 | * temps */ |
bb8c093b | 1795 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
b481de9c ZY |
1796 | ref_temp); |
1797 | ||
1798 | /* set tx power value for all rates, OFDM and CCK */ | |
1799 | for (rate_index = 0; rate_index < IWL_RATE_COUNT; | |
1800 | rate_index++) { | |
1801 | int power_idx = | |
1802 | ch_info->power_info[rate_index].base_power_index; | |
1803 | ||
1804 | /* temperature compensate */ | |
1805 | power_idx += delta_index; | |
1806 | ||
1807 | /* stay within table range */ | |
bb8c093b | 1808 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c ZY |
1809 | ch_info->power_info[rate_index]. |
1810 | power_table_index = (u8) power_idx; | |
1811 | ch_info->power_info[rate_index].tpc = | |
1812 | power_gain_table[a_band][power_idx]; | |
1813 | } | |
1814 | ||
1815 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
67d613ae | 1816 | clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; |
b481de9c ZY |
1817 | |
1818 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
1819 | for (scan_tbl_index = 0; | |
1820 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
1821 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 1822 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 1823 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
1824 | actual_index, clip_pwrs, |
1825 | ch_info, a_band); | |
1826 | } | |
1827 | } | |
1828 | ||
1829 | /* send Txpower command for current channel to ucode */ | |
75bcfae9 | 1830 | return priv->cfg->ops->lib->send_tx_power(priv); |
b481de9c ZY |
1831 | } |
1832 | ||
4a8a4322 | 1833 | int iwl3945_hw_reg_set_txpower(struct iwl_priv *priv, s8 power) |
b481de9c | 1834 | { |
d20b3c65 | 1835 | struct iwl_channel_info *ch_info; |
b481de9c ZY |
1836 | s8 max_power; |
1837 | u8 a_band; | |
1838 | u8 i; | |
1839 | ||
62ea9c5b | 1840 | if (priv->tx_power_user_lmt == power) { |
e1623446 | 1841 | IWL_DEBUG_POWER(priv, "Requested Tx power same as current " |
b481de9c ZY |
1842 | "limit: %ddBm.\n", power); |
1843 | return 0; | |
1844 | } | |
1845 | ||
e1623446 | 1846 | IWL_DEBUG_POWER(priv, "Setting upper limit clamp to %ddBm.\n", power); |
62ea9c5b | 1847 | priv->tx_power_user_lmt = power; |
b481de9c ZY |
1848 | |
1849 | /* set up new Tx powers for each and every channel, 2.4 and 5.x */ | |
1850 | ||
1851 | for (i = 0; i < priv->channel_count; i++) { | |
1852 | ch_info = &priv->channel_info[i]; | |
1853 | a_band = is_channel_a_band(ch_info); | |
1854 | ||
1855 | /* find minimum power of all user and regulatory constraints | |
1856 | * (does not consider h/w clipping limitations) */ | |
bb8c093b | 1857 | max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info); |
b481de9c ZY |
1858 | max_power = min(power, max_power); |
1859 | if (max_power != ch_info->curr_txpow) { | |
1860 | ch_info->curr_txpow = max_power; | |
1861 | ||
1862 | /* this considers the h/w clipping limitations */ | |
bb8c093b | 1863 | iwl3945_hw_reg_set_new_power(priv, ch_info); |
b481de9c ZY |
1864 | } |
1865 | } | |
1866 | ||
1867 | /* update txpower settings for all channels, | |
1868 | * send to NIC if associated. */ | |
1869 | is_temp_calib_needed(priv); | |
bb8c093b | 1870 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
1871 | |
1872 | return 0; | |
1873 | } | |
1874 | ||
5bbe233b AK |
1875 | static int iwl3945_send_rxon_assoc(struct iwl_priv *priv) |
1876 | { | |
1877 | int rc = 0; | |
2f301227 | 1878 | struct iwl_rx_packet *pkt; |
5bbe233b AK |
1879 | struct iwl3945_rxon_assoc_cmd rxon_assoc; |
1880 | struct iwl_host_cmd cmd = { | |
1881 | .id = REPLY_RXON_ASSOC, | |
1882 | .len = sizeof(rxon_assoc), | |
c2acea8e | 1883 | .flags = CMD_WANT_SKB, |
5bbe233b AK |
1884 | .data = &rxon_assoc, |
1885 | }; | |
1886 | const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; | |
1887 | const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; | |
1888 | ||
1889 | if ((rxon1->flags == rxon2->flags) && | |
1890 | (rxon1->filter_flags == rxon2->filter_flags) && | |
1891 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
1892 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
1893 | IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); | |
1894 | return 0; | |
1895 | } | |
1896 | ||
1897 | rxon_assoc.flags = priv->staging_rxon.flags; | |
1898 | rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; | |
1899 | rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; | |
1900 | rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; | |
1901 | rxon_assoc.reserved = 0; | |
1902 | ||
1903 | rc = iwl_send_cmd_sync(priv, &cmd); | |
1904 | if (rc) | |
1905 | return rc; | |
1906 | ||
2f301227 ZY |
1907 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
1908 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
5bbe233b AK |
1909 | IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n"); |
1910 | rc = -EIO; | |
1911 | } | |
1912 | ||
64a76b50 | 1913 | iwl_free_pages(priv, cmd.reply_page); |
5bbe233b AK |
1914 | |
1915 | return rc; | |
1916 | } | |
1917 | ||
e0158e61 AK |
1918 | /** |
1919 | * iwl3945_commit_rxon - commit staging_rxon to hardware | |
1920 | * | |
1921 | * The RXON command in staging_rxon is committed to the hardware and | |
1922 | * the active_rxon structure is updated with the new data. This | |
1923 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
1924 | * a HW tune is required based on the RXON structure changes. | |
1925 | */ | |
1926 | static int iwl3945_commit_rxon(struct iwl_priv *priv) | |
1927 | { | |
1928 | /* cast away the const for active_rxon in this function */ | |
1929 | struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon; | |
1930 | struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon; | |
1931 | int rc = 0; | |
1932 | bool new_assoc = | |
1933 | !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK); | |
1934 | ||
1935 | if (!iwl_is_alive(priv)) | |
1936 | return -1; | |
1937 | ||
1938 | /* always get timestamp with Rx frame */ | |
1939 | staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK; | |
1940 | ||
1941 | /* select antenna */ | |
1942 | staging_rxon->flags &= | |
1943 | ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK); | |
1944 | staging_rxon->flags |= iwl3945_get_antenna_flags(priv); | |
1945 | ||
1946 | rc = iwl_check_rxon_cmd(priv); | |
1947 | if (rc) { | |
1948 | IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); | |
1949 | return -EINVAL; | |
1950 | } | |
1951 | ||
1952 | /* If we don't need to send a full RXON, we can use | |
1953 | * iwl3945_rxon_assoc_cmd which is used to reconfigure filter | |
1954 | * and other flags for the current radio configuration. */ | |
1955 | if (!iwl_full_rxon_required(priv)) { | |
1956 | rc = iwl_send_rxon_assoc(priv); | |
1957 | if (rc) { | |
1958 | IWL_ERR(priv, "Error setting RXON_ASSOC " | |
1959 | "configuration (%d).\n", rc); | |
1960 | return rc; | |
1961 | } | |
1962 | ||
1963 | memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); | |
1964 | ||
1965 | return 0; | |
1966 | } | |
1967 | ||
1968 | /* If we are currently associated and the new config requires | |
1969 | * an RXON_ASSOC and the new config wants the associated mask enabled, | |
1970 | * we must clear the associated from the active configuration | |
1971 | * before we apply the new config */ | |
1972 | if (iwl_is_associated(priv) && new_assoc) { | |
1973 | IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n"); | |
1974 | active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
1975 | ||
1976 | /* | |
1977 | * reserved4 and 5 could have been filled by the iwlcore code. | |
1978 | * Let's clear them before pushing to the 3945. | |
1979 | */ | |
1980 | active_rxon->reserved4 = 0; | |
1981 | active_rxon->reserved5 = 0; | |
1982 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, | |
1983 | sizeof(struct iwl3945_rxon_cmd), | |
1984 | &priv->active_rxon); | |
1985 | ||
1986 | /* If the mask clearing failed then we set | |
1987 | * active_rxon back to what it was previously */ | |
1988 | if (rc) { | |
1989 | active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK; | |
1990 | IWL_ERR(priv, "Error clearing ASSOC_MSK on current " | |
1991 | "configuration (%d).\n", rc); | |
1992 | return rc; | |
1993 | } | |
2c810ccd | 1994 | iwl_clear_ucode_stations(priv); |
7e246191 | 1995 | iwl_restore_stations(priv); |
e0158e61 AK |
1996 | } |
1997 | ||
1998 | IWL_DEBUG_INFO(priv, "Sending RXON\n" | |
1999 | "* with%s RXON_FILTER_ASSOC_MSK\n" | |
2000 | "* channel = %d\n" | |
2001 | "* bssid = %pM\n", | |
2002 | (new_assoc ? "" : "out"), | |
2003 | le16_to_cpu(staging_rxon->channel), | |
2004 | staging_rxon->bssid_addr); | |
2005 | ||
2006 | /* | |
2007 | * reserved4 and 5 could have been filled by the iwlcore code. | |
2008 | * Let's clear them before pushing to the 3945. | |
2009 | */ | |
2010 | staging_rxon->reserved4 = 0; | |
2011 | staging_rxon->reserved5 = 0; | |
2012 | ||
90e8e424 | 2013 | iwl_set_rxon_hwcrypto(priv, !iwl3945_mod_params.sw_crypto); |
e0158e61 AK |
2014 | |
2015 | /* Apply the new configuration */ | |
2016 | rc = iwl_send_cmd_pdu(priv, REPLY_RXON, | |
2017 | sizeof(struct iwl3945_rxon_cmd), | |
2018 | staging_rxon); | |
2019 | if (rc) { | |
2020 | IWL_ERR(priv, "Error setting new configuration (%d).\n", rc); | |
2021 | return rc; | |
2022 | } | |
2023 | ||
2024 | memcpy(active_rxon, staging_rxon, sizeof(*active_rxon)); | |
2025 | ||
7e246191 | 2026 | if (!new_assoc) { |
2c810ccd | 2027 | iwl_clear_ucode_stations(priv); |
7e246191 RC |
2028 | iwl_restore_stations(priv); |
2029 | } | |
e0158e61 AK |
2030 | |
2031 | /* If we issue a new RXON command which required a tune then we must | |
2032 | * send a new TXPOWER command or we won't be able to Tx any frames */ | |
2033 | rc = priv->cfg->ops->lib->send_tx_power(priv); | |
2034 | if (rc) { | |
2035 | IWL_ERR(priv, "Error setting Tx power (%d).\n", rc); | |
2036 | return rc; | |
2037 | } | |
2038 | ||
e0158e61 AK |
2039 | /* Init the hardware's rate fallback order based on the band */ |
2040 | rc = iwl3945_init_hw_rate_table(priv); | |
2041 | if (rc) { | |
2042 | IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc); | |
2043 | return -EIO; | |
2044 | } | |
2045 | ||
2046 | return 0; | |
2047 | } | |
2048 | ||
b481de9c ZY |
2049 | /** |
2050 | * iwl3945_reg_txpower_periodic - called when time to check our temperature. | |
2051 | * | |
2052 | * -- reset periodic timer | |
2053 | * -- see if temp has changed enough to warrant re-calibration ... if so: | |
2054 | * -- correct coeffs for temp (can reset temp timer) | |
2055 | * -- save this temp as "last", | |
2056 | * -- send new set of gain settings to NIC | |
2057 | * NOTE: This should continue working, even when we're not associated, | |
2058 | * so we can keep our internal table of scan powers current. */ | |
4a8a4322 | 2059 | void iwl3945_reg_txpower_periodic(struct iwl_priv *priv) |
b481de9c ZY |
2060 | { |
2061 | /* This will kick in the "brute force" | |
bb8c093b | 2062 | * iwl3945_hw_reg_comp_txpower_temp() below */ |
b481de9c ZY |
2063 | if (!is_temp_calib_needed(priv)) |
2064 | goto reschedule; | |
2065 | ||
2066 | /* Set up a new set of temp-adjusted TxPowers, send to NIC. | |
2067 | * This is based *only* on current temperature, | |
2068 | * ignoring any previous power measurements */ | |
bb8c093b | 2069 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
2070 | |
2071 | reschedule: | |
2072 | queue_delayed_work(priv->workqueue, | |
ee525d13 | 2073 | &priv->_3945.thermal_periodic, REG_RECALIB_PERIOD * HZ); |
b481de9c ZY |
2074 | } |
2075 | ||
416e1438 | 2076 | static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work) |
b481de9c | 2077 | { |
4a8a4322 | 2078 | struct iwl_priv *priv = container_of(work, struct iwl_priv, |
ee525d13 | 2079 | _3945.thermal_periodic.work); |
b481de9c ZY |
2080 | |
2081 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
2082 | return; | |
2083 | ||
2084 | mutex_lock(&priv->mutex); | |
2085 | iwl3945_reg_txpower_periodic(priv); | |
2086 | mutex_unlock(&priv->mutex); | |
2087 | } | |
2088 | ||
2089 | /** | |
bb8c093b | 2090 | * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4) |
b481de9c ZY |
2091 | * for the channel. |
2092 | * | |
2093 | * This function is used when initializing channel-info structs. | |
2094 | * | |
2095 | * NOTE: These channel groups do *NOT* match the bands above! | |
2096 | * These channel groups are based on factory-tested channels; | |
2097 | * on A-band, EEPROM's "group frequency" entries represent the top | |
2098 | * channel in each group 1-4. Group 5 All B/G channels are in group 0. | |
2099 | */ | |
4a8a4322 | 2100 | static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl_priv *priv, |
d20b3c65 | 2101 | const struct iwl_channel_info *ch_info) |
b481de9c | 2102 | { |
e6148917 SO |
2103 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
2104 | struct iwl3945_eeprom_txpower_group *ch_grp = &eeprom->groups[0]; | |
b481de9c ZY |
2105 | u8 group; |
2106 | u16 group_index = 0; /* based on factory calib frequencies */ | |
2107 | u8 grp_channel; | |
2108 | ||
2109 | /* Find the group index for the channel ... don't use index 1(?) */ | |
2110 | if (is_channel_a_band(ch_info)) { | |
2111 | for (group = 1; group < 5; group++) { | |
2112 | grp_channel = ch_grp[group].group_channel; | |
2113 | if (ch_info->channel <= grp_channel) { | |
2114 | group_index = group; | |
2115 | break; | |
2116 | } | |
2117 | } | |
2118 | /* group 4 has a few channels *above* its factory cal freq */ | |
2119 | if (group == 5) | |
2120 | group_index = 4; | |
2121 | } else | |
2122 | group_index = 0; /* 2.4 GHz, group 0 */ | |
2123 | ||
e1623446 | 2124 | IWL_DEBUG_POWER(priv, "Chnl %d mapped to grp %d\n", ch_info->channel, |
b481de9c ZY |
2125 | group_index); |
2126 | return group_index; | |
2127 | } | |
2128 | ||
2129 | /** | |
bb8c093b | 2130 | * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index |
b481de9c ZY |
2131 | * |
2132 | * Interpolate to get nominal (i.e. at factory calibration temperature) index | |
2133 | * into radio/DSP gain settings table for requested power. | |
2134 | */ | |
4a8a4322 | 2135 | static int iwl3945_hw_reg_get_matched_power_index(struct iwl_priv *priv, |
b481de9c ZY |
2136 | s8 requested_power, |
2137 | s32 setting_index, s32 *new_index) | |
2138 | { | |
bb8c093b | 2139 | const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL; |
e6148917 | 2140 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
b481de9c ZY |
2141 | s32 index0, index1; |
2142 | s32 power = 2 * requested_power; | |
2143 | s32 i; | |
bb8c093b | 2144 | const struct iwl3945_eeprom_txpower_sample *samples; |
b481de9c ZY |
2145 | s32 gains0, gains1; |
2146 | s32 res; | |
2147 | s32 denominator; | |
2148 | ||
e6148917 | 2149 | chnl_grp = &eeprom->groups[setting_index]; |
b481de9c ZY |
2150 | samples = chnl_grp->samples; |
2151 | for (i = 0; i < 5; i++) { | |
2152 | if (power == samples[i].power) { | |
2153 | *new_index = samples[i].gain_index; | |
2154 | return 0; | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | if (power > samples[1].power) { | |
2159 | index0 = 0; | |
2160 | index1 = 1; | |
2161 | } else if (power > samples[2].power) { | |
2162 | index0 = 1; | |
2163 | index1 = 2; | |
2164 | } else if (power > samples[3].power) { | |
2165 | index0 = 2; | |
2166 | index1 = 3; | |
2167 | } else { | |
2168 | index0 = 3; | |
2169 | index1 = 4; | |
2170 | } | |
2171 | ||
2172 | denominator = (s32) samples[index1].power - (s32) samples[index0].power; | |
2173 | if (denominator == 0) | |
2174 | return -EINVAL; | |
2175 | gains0 = (s32) samples[index0].gain_index * (1 << 19); | |
2176 | gains1 = (s32) samples[index1].gain_index * (1 << 19); | |
2177 | res = gains0 + (gains1 - gains0) * | |
2178 | ((s32) power - (s32) samples[index0].power) / denominator + | |
2179 | (1 << 18); | |
2180 | *new_index = res >> 19; | |
2181 | return 0; | |
2182 | } | |
2183 | ||
4a8a4322 | 2184 | static void iwl3945_hw_reg_init_channel_groups(struct iwl_priv *priv) |
b481de9c ZY |
2185 | { |
2186 | u32 i; | |
2187 | s32 rate_index; | |
e6148917 | 2188 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
bb8c093b | 2189 | const struct iwl3945_eeprom_txpower_group *group; |
b481de9c | 2190 | |
e1623446 | 2191 | IWL_DEBUG_POWER(priv, "Initializing factory calib info from EEPROM\n"); |
b481de9c ZY |
2192 | |
2193 | for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) { | |
2194 | s8 *clip_pwrs; /* table of power levels for each rate */ | |
2195 | s8 satur_pwr; /* saturation power for each chnl group */ | |
e6148917 | 2196 | group = &eeprom->groups[i]; |
b481de9c ZY |
2197 | |
2198 | /* sanity check on factory saturation power value */ | |
2199 | if (group->saturation_power < 40) { | |
39aadf8c | 2200 | IWL_WARN(priv, "Error: saturation power is %d, " |
b481de9c ZY |
2201 | "less than minimum expected 40\n", |
2202 | group->saturation_power); | |
2203 | return; | |
2204 | } | |
2205 | ||
2206 | /* | |
2207 | * Derive requested power levels for each rate, based on | |
2208 | * hardware capabilities (saturation power for band). | |
2209 | * Basic value is 3dB down from saturation, with further | |
2210 | * power reductions for highest 3 data rates. These | |
2211 | * backoffs provide headroom for high rate modulation | |
2212 | * power peaks, without too much distortion (clipping). | |
2213 | */ | |
2214 | /* we'll fill in this array with h/w max power levels */ | |
67d613ae | 2215 | clip_pwrs = (s8 *) priv->_3945.clip_groups[i].clip_powers; |
b481de9c ZY |
2216 | |
2217 | /* divide factory saturation power by 2 to find -3dB level */ | |
2218 | satur_pwr = (s8) (group->saturation_power >> 1); | |
2219 | ||
2220 | /* fill in channel group's nominal powers for each rate */ | |
2221 | for (rate_index = 0; | |
1d79e53c | 2222 | rate_index < IWL_RATE_COUNT_3945; rate_index++, clip_pwrs++) { |
b481de9c | 2223 | switch (rate_index) { |
14577f23 | 2224 | case IWL_RATE_36M_INDEX_TABLE: |
b481de9c ZY |
2225 | if (i == 0) /* B/G */ |
2226 | *clip_pwrs = satur_pwr; | |
2227 | else /* A */ | |
2228 | *clip_pwrs = satur_pwr - 5; | |
2229 | break; | |
14577f23 | 2230 | case IWL_RATE_48M_INDEX_TABLE: |
b481de9c ZY |
2231 | if (i == 0) |
2232 | *clip_pwrs = satur_pwr - 7; | |
2233 | else | |
2234 | *clip_pwrs = satur_pwr - 10; | |
2235 | break; | |
14577f23 | 2236 | case IWL_RATE_54M_INDEX_TABLE: |
b481de9c ZY |
2237 | if (i == 0) |
2238 | *clip_pwrs = satur_pwr - 9; | |
2239 | else | |
2240 | *clip_pwrs = satur_pwr - 12; | |
2241 | break; | |
2242 | default: | |
2243 | *clip_pwrs = satur_pwr; | |
2244 | break; | |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | /** | |
2251 | * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM | |
2252 | * | |
2253 | * Second pass (during init) to set up priv->channel_info | |
2254 | * | |
2255 | * Set up Tx-power settings in our channel info database for each VALID | |
2256 | * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values | |
2257 | * and current temperature. | |
2258 | * | |
2259 | * Since this is based on current temperature (at init time), these values may | |
2260 | * not be valid for very long, but it gives us a starting/default point, | |
2261 | * and allows us to active (i.e. using Tx) scan. | |
2262 | * | |
2263 | * This does *not* write values to NIC, just sets up our internal table. | |
2264 | */ | |
4a8a4322 | 2265 | int iwl3945_txpower_set_from_eeprom(struct iwl_priv *priv) |
b481de9c | 2266 | { |
d20b3c65 | 2267 | struct iwl_channel_info *ch_info = NULL; |
bb8c093b | 2268 | struct iwl3945_channel_power_info *pwr_info; |
e6148917 | 2269 | struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom; |
b481de9c ZY |
2270 | int delta_index; |
2271 | u8 rate_index; | |
2272 | u8 scan_tbl_index; | |
2273 | const s8 *clip_pwrs; /* array of power levels for each rate */ | |
2274 | u8 gain, dsp_atten; | |
2275 | s8 power; | |
2276 | u8 pwr_index, base_pwr_index, a_band; | |
2277 | u8 i; | |
2278 | int temperature; | |
2279 | ||
2280 | /* save temperature reference, | |
2281 | * so we can determine next time to calibrate */ | |
bb8c093b | 2282 | temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
2283 | priv->last_temperature = temperature; |
2284 | ||
bb8c093b | 2285 | iwl3945_hw_reg_init_channel_groups(priv); |
b481de9c ZY |
2286 | |
2287 | /* initialize Tx power info for each and every channel, 2.4 and 5.x */ | |
2288 | for (i = 0, ch_info = priv->channel_info; i < priv->channel_count; | |
2289 | i++, ch_info++) { | |
2290 | a_band = is_channel_a_band(ch_info); | |
2291 | if (!is_channel_valid(ch_info)) | |
2292 | continue; | |
2293 | ||
2294 | /* find this channel's channel group (*not* "band") index */ | |
2295 | ch_info->group_index = | |
bb8c093b | 2296 | iwl3945_hw_reg_get_ch_grp_index(priv, ch_info); |
b481de9c ZY |
2297 | |
2298 | /* Get this chnlgrp's rate->max/clip-powers table */ | |
67d613ae | 2299 | clip_pwrs = priv->_3945.clip_groups[ch_info->group_index].clip_powers; |
b481de9c ZY |
2300 | |
2301 | /* calculate power index *adjustment* value according to | |
2302 | * diff between current temperature and factory temperature */ | |
bb8c093b | 2303 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
e6148917 | 2304 | eeprom->groups[ch_info->group_index]. |
b481de9c ZY |
2305 | temperature); |
2306 | ||
e1623446 | 2307 | IWL_DEBUG_POWER(priv, "Delta index for channel %d: %d [%d]\n", |
b481de9c ZY |
2308 | ch_info->channel, delta_index, temperature + |
2309 | IWL_TEMP_CONVERT); | |
2310 | ||
2311 | /* set tx power value for all OFDM rates */ | |
2312 | for (rate_index = 0; rate_index < IWL_OFDM_RATES; | |
2313 | rate_index++) { | |
25a4ccea | 2314 | s32 uninitialized_var(power_idx); |
b481de9c ZY |
2315 | int rc; |
2316 | ||
2317 | /* use channel group's clip-power table, | |
2318 | * but don't exceed channel's max power */ | |
2319 | s8 pwr = min(ch_info->max_power_avg, | |
2320 | clip_pwrs[rate_index]); | |
2321 | ||
2322 | pwr_info = &ch_info->power_info[rate_index]; | |
2323 | ||
2324 | /* get base (i.e. at factory-measured temperature) | |
2325 | * power table index for this rate's power */ | |
bb8c093b | 2326 | rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr, |
b481de9c ZY |
2327 | ch_info->group_index, |
2328 | &power_idx); | |
2329 | if (rc) { | |
15b1687c | 2330 | IWL_ERR(priv, "Invalid power index\n"); |
b481de9c ZY |
2331 | return rc; |
2332 | } | |
2333 | pwr_info->base_power_index = (u8) power_idx; | |
2334 | ||
2335 | /* temperature compensate */ | |
2336 | power_idx += delta_index; | |
2337 | ||
2338 | /* stay within range of gain table */ | |
bb8c093b | 2339 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c | 2340 | |
bb8c093b | 2341 | /* fill 1 OFDM rate's iwl3945_channel_power_info struct */ |
b481de9c ZY |
2342 | pwr_info->requested_power = pwr; |
2343 | pwr_info->power_table_index = (u8) power_idx; | |
2344 | pwr_info->tpc.tx_gain = | |
2345 | power_gain_table[a_band][power_idx].tx_gain; | |
2346 | pwr_info->tpc.dsp_atten = | |
2347 | power_gain_table[a_band][power_idx].dsp_atten; | |
2348 | } | |
2349 | ||
2350 | /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/ | |
14577f23 | 2351 | pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]; |
b481de9c ZY |
2352 | power = pwr_info->requested_power + |
2353 | IWL_CCK_FROM_OFDM_POWER_DIFF; | |
2354 | pwr_index = pwr_info->power_table_index + | |
2355 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2356 | base_pwr_index = pwr_info->base_power_index + | |
2357 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2358 | ||
2359 | /* stay within table range */ | |
bb8c093b | 2360 | pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index); |
b481de9c ZY |
2361 | gain = power_gain_table[a_band][pwr_index].tx_gain; |
2362 | dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten; | |
2363 | ||
bb8c093b | 2364 | /* fill each CCK rate's iwl3945_channel_power_info structure |
b481de9c ZY |
2365 | * NOTE: All CCK-rate Txpwrs are the same for a given chnl! |
2366 | * NOTE: CCK rates start at end of OFDM rates! */ | |
14577f23 MA |
2367 | for (rate_index = 0; |
2368 | rate_index < IWL_CCK_RATES; rate_index++) { | |
2369 | pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES]; | |
b481de9c ZY |
2370 | pwr_info->requested_power = power; |
2371 | pwr_info->power_table_index = pwr_index; | |
2372 | pwr_info->base_power_index = base_pwr_index; | |
2373 | pwr_info->tpc.tx_gain = gain; | |
2374 | pwr_info->tpc.dsp_atten = dsp_atten; | |
2375 | } | |
2376 | ||
2377 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
2378 | for (scan_tbl_index = 0; | |
2379 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
2380 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 2381 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 2382 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
2383 | actual_index, clip_pwrs, ch_info, a_band); |
2384 | } | |
2385 | } | |
2386 | ||
2387 | return 0; | |
2388 | } | |
2389 | ||
4a8a4322 | 2390 | int iwl3945_hw_rxq_stop(struct iwl_priv *priv) |
b481de9c ZY |
2391 | { |
2392 | int rc; | |
b481de9c | 2393 | |
5d49f498 AK |
2394 | iwl_write_direct32(priv, FH39_RCSR_CONFIG(0), 0); |
2395 | rc = iwl_poll_direct_bit(priv, FH39_RSSR_STATUS, | |
bddadf86 | 2396 | FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); |
b481de9c | 2397 | if (rc < 0) |
15b1687c | 2398 | IWL_ERR(priv, "Can't stop Rx DMA.\n"); |
b481de9c | 2399 | |
b481de9c ZY |
2400 | return 0; |
2401 | } | |
2402 | ||
188cf6c7 | 2403 | int iwl3945_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq) |
b481de9c | 2404 | { |
b481de9c ZY |
2405 | int txq_id = txq->q.id; |
2406 | ||
ee525d13 | 2407 | struct iwl3945_shared *shared_data = priv->_3945.shared_virt; |
b481de9c ZY |
2408 | |
2409 | shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr); | |
2410 | ||
5d49f498 AK |
2411 | iwl_write_direct32(priv, FH39_CBCC_CTRL(txq_id), 0); |
2412 | iwl_write_direct32(priv, FH39_CBCC_BASE(txq_id), 0); | |
bddadf86 | 2413 | |
5d49f498 | 2414 | iwl_write_direct32(priv, FH39_TCSR_CONFIG(txq_id), |
bddadf86 TW |
2415 | FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT | |
2416 | FH39_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF | | |
2417 | FH39_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD | | |
2418 | FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL | | |
2419 | FH39_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE); | |
b481de9c ZY |
2420 | |
2421 | /* fake read to flush all prev. writes */ | |
5d49f498 | 2422 | iwl_read32(priv, FH39_TSSR_CBB_BASE); |
b481de9c ZY |
2423 | |
2424 | return 0; | |
2425 | } | |
2426 | ||
42427b4e KA |
2427 | /* |
2428 | * HCMD utils | |
2429 | */ | |
2430 | static u16 iwl3945_get_hcmd_size(u8 cmd_id, u16 len) | |
2431 | { | |
2432 | switch (cmd_id) { | |
2433 | case REPLY_RXON: | |
d25aabb0 WT |
2434 | return sizeof(struct iwl3945_rxon_cmd); |
2435 | case POWER_TABLE_CMD: | |
2436 | return sizeof(struct iwl3945_powertable_cmd); | |
42427b4e KA |
2437 | default: |
2438 | return len; | |
2439 | } | |
2440 | } | |
2441 | ||
c587de0b | 2442 | |
17f841cd SO |
2443 | static u16 iwl3945_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) |
2444 | { | |
c587de0b TW |
2445 | struct iwl3945_addsta_cmd *addsta = (struct iwl3945_addsta_cmd *)data; |
2446 | addsta->mode = cmd->mode; | |
2447 | memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); | |
2448 | memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo)); | |
2449 | addsta->station_flags = cmd->station_flags; | |
2450 | addsta->station_flags_msk = cmd->station_flags_msk; | |
2451 | addsta->tid_disable_tx = cpu_to_le16(0); | |
2452 | addsta->rate_n_flags = cmd->rate_n_flags; | |
2453 | addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; | |
2454 | addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; | |
2455 | addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; | |
2456 | ||
2457 | return (u16)sizeof(struct iwl3945_addsta_cmd); | |
17f841cd SO |
2458 | } |
2459 | ||
1fa61b2e JB |
2460 | static int iwl3945_manage_ibss_station(struct iwl_priv *priv, |
2461 | struct ieee80211_vif *vif, bool add) | |
2462 | { | |
fd1af15d | 2463 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
1fa61b2e JB |
2464 | int ret; |
2465 | ||
1fa61b2e | 2466 | if (add) { |
57f8db89 | 2467 | ret = iwl_add_bssid_station(priv, vif->bss_conf.bssid, false, |
fd1af15d | 2468 | &vif_priv->ibss_bssid_sta_id); |
1fa61b2e JB |
2469 | if (ret) |
2470 | return ret; | |
2471 | ||
fd1af15d | 2472 | iwl3945_sync_sta(priv, vif_priv->ibss_bssid_sta_id, |
1fa61b2e | 2473 | (priv->band == IEEE80211_BAND_5GHZ) ? |
9c5ac091 | 2474 | IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP); |
fd1af15d | 2475 | iwl3945_rate_scale_init(priv->hw, vif_priv->ibss_bssid_sta_id); |
1fa61b2e JB |
2476 | |
2477 | return 0; | |
2478 | } | |
2479 | ||
fd1af15d JB |
2480 | return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, |
2481 | vif->bss_conf.bssid); | |
1fa61b2e | 2482 | } |
c587de0b | 2483 | |
b481de9c ZY |
2484 | /** |
2485 | * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table | |
2486 | */ | |
4a8a4322 | 2487 | int iwl3945_init_hw_rate_table(struct iwl_priv *priv) |
b481de9c | 2488 | { |
14577f23 | 2489 | int rc, i, index, prev_index; |
bb8c093b | 2490 | struct iwl3945_rate_scaling_cmd rate_cmd = { |
b481de9c ZY |
2491 | .reserved = {0, 0, 0}, |
2492 | }; | |
bb8c093b | 2493 | struct iwl3945_rate_scaling_info *table = rate_cmd.table; |
b481de9c | 2494 | |
bb8c093b CH |
2495 | for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) { |
2496 | index = iwl3945_rates[i].table_rs_index; | |
14577f23 MA |
2497 | |
2498 | table[index].rate_n_flags = | |
bb8c093b | 2499 | iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0); |
14577f23 | 2500 | table[index].try_cnt = priv->retry_rate; |
bb8c093b | 2501 | prev_index = iwl3945_get_prev_ieee_rate(i); |
7262796a AM |
2502 | table[index].next_rate_index = |
2503 | iwl3945_rates[prev_index].table_rs_index; | |
b481de9c ZY |
2504 | } |
2505 | ||
8318d78a JB |
2506 | switch (priv->band) { |
2507 | case IEEE80211_BAND_5GHZ: | |
e1623446 | 2508 | IWL_DEBUG_RATE(priv, "Select A mode rate scale\n"); |
b481de9c ZY |
2509 | /* If one of the following CCK rates is used, |
2510 | * have it fall back to the 6M OFDM rate */ | |
7262796a AM |
2511 | for (i = IWL_RATE_1M_INDEX_TABLE; |
2512 | i <= IWL_RATE_11M_INDEX_TABLE; i++) | |
2513 | table[i].next_rate_index = | |
2514 | iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; | |
b481de9c ZY |
2515 | |
2516 | /* Don't fall back to CCK rates */ | |
7262796a AM |
2517 | table[IWL_RATE_12M_INDEX_TABLE].next_rate_index = |
2518 | IWL_RATE_9M_INDEX_TABLE; | |
b481de9c ZY |
2519 | |
2520 | /* Don't drop out of OFDM rates */ | |
14577f23 | 2521 | table[IWL_RATE_6M_INDEX_TABLE].next_rate_index = |
bb8c093b | 2522 | iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; |
b481de9c ZY |
2523 | break; |
2524 | ||
8318d78a | 2525 | case IEEE80211_BAND_2GHZ: |
e1623446 | 2526 | IWL_DEBUG_RATE(priv, "Select B/G mode rate scale\n"); |
b481de9c ZY |
2527 | /* If an OFDM rate is used, have it fall back to the |
2528 | * 1M CCK rates */ | |
b481de9c | 2529 | |
ee525d13 | 2530 | if (!(priv->_3945.sta_supp_rates & IWL_OFDM_RATES_MASK) && |
8ccde88a | 2531 | iwl_is_associated(priv)) { |
7262796a AM |
2532 | |
2533 | index = IWL_FIRST_CCK_RATE; | |
2534 | for (i = IWL_RATE_6M_INDEX_TABLE; | |
2535 | i <= IWL_RATE_54M_INDEX_TABLE; i++) | |
2536 | table[i].next_rate_index = | |
2537 | iwl3945_rates[index].table_rs_index; | |
2538 | ||
2539 | index = IWL_RATE_11M_INDEX_TABLE; | |
2540 | /* CCK shouldn't fall back to OFDM... */ | |
2541 | table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE; | |
2542 | } | |
b481de9c ZY |
2543 | break; |
2544 | ||
2545 | default: | |
8318d78a | 2546 | WARN_ON(1); |
b481de9c ZY |
2547 | break; |
2548 | } | |
2549 | ||
2550 | /* Update the rate scaling for control frame Tx */ | |
2551 | rate_cmd.table_id = 0; | |
518099a8 | 2552 | rc = iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2553 | &rate_cmd); |
2554 | if (rc) | |
2555 | return rc; | |
2556 | ||
2557 | /* Update the rate scaling for data frame Tx */ | |
2558 | rate_cmd.table_id = 1; | |
518099a8 | 2559 | return iwl_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2560 | &rate_cmd); |
2561 | } | |
2562 | ||
796083cb | 2563 | /* Called when initializing driver */ |
4a8a4322 | 2564 | int iwl3945_hw_set_hw_params(struct iwl_priv *priv) |
b481de9c | 2565 | { |
3832ec9d AK |
2566 | memset((void *)&priv->hw_params, 0, |
2567 | sizeof(struct iwl_hw_params)); | |
b481de9c | 2568 | |
ee525d13 JB |
2569 | priv->_3945.shared_virt = |
2570 | dma_alloc_coherent(&priv->pci_dev->dev, | |
2571 | sizeof(struct iwl3945_shared), | |
2572 | &priv->_3945.shared_phys, GFP_KERNEL); | |
2573 | if (!priv->_3945.shared_virt) { | |
15b1687c | 2574 | IWL_ERR(priv, "failed to allocate pci memory\n"); |
b481de9c ZY |
2575 | return -ENOMEM; |
2576 | } | |
2577 | ||
21c02a1a | 2578 | /* Assign number of Usable TX queues */ |
88804e2b | 2579 | priv->hw_params.max_txq_num = priv->cfg->num_of_queues; |
21c02a1a | 2580 | |
a8e74e27 | 2581 | priv->hw_params.tfd_size = sizeof(struct iwl3945_tfd); |
2f301227 | 2582 | priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_3K); |
3832ec9d AK |
2583 | priv->hw_params.max_rxq_size = RX_QUEUE_SIZE; |
2584 | priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG; | |
2585 | priv->hw_params.max_stations = IWL3945_STATION_COUNT; | |
2586 | priv->hw_params.bcast_sta_id = IWL3945_BROADCAST_ID; | |
3e82a822 | 2587 | |
141c43a3 | 2588 | priv->hw_params.rx_wrt_ptr_reg = FH39_RSCSR_CHNL0_WPTR; |
2c2f3b33 | 2589 | priv->hw_params.max_beacon_itrvl = IWL39_MAX_UCODE_BEACON_INTERVAL; |
141c43a3 | 2590 | |
b481de9c ZY |
2591 | return 0; |
2592 | } | |
2593 | ||
4a8a4322 | 2594 | unsigned int iwl3945_hw_get_beacon_cmd(struct iwl_priv *priv, |
bb8c093b | 2595 | struct iwl3945_frame *frame, u8 rate) |
b481de9c | 2596 | { |
bb8c093b | 2597 | struct iwl3945_tx_beacon_cmd *tx_beacon_cmd; |
b481de9c ZY |
2598 | unsigned int frame_size; |
2599 | ||
bb8c093b | 2600 | tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u; |
b481de9c ZY |
2601 | memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); |
2602 | ||
3832ec9d | 2603 | tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id; |
b481de9c ZY |
2604 | tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
2605 | ||
bb8c093b | 2606 | frame_size = iwl3945_fill_beacon_frame(priv, |
b481de9c | 2607 | tx_beacon_cmd->frame, |
b481de9c ZY |
2608 | sizeof(frame->u) - sizeof(*tx_beacon_cmd)); |
2609 | ||
2610 | BUG_ON(frame_size > MAX_MPDU_SIZE); | |
2611 | tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); | |
2612 | ||
2613 | tx_beacon_cmd->tx.rate = rate; | |
2614 | tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | | |
2615 | TX_CMD_FLG_TSF_MSK); | |
2616 | ||
14577f23 MA |
2617 | /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/ |
2618 | tx_beacon_cmd->tx.supp_rates[0] = | |
2619 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2620 | ||
b481de9c | 2621 | tx_beacon_cmd->tx.supp_rates[1] = |
14577f23 | 2622 | (IWL_CCK_BASIC_RATES_MASK & 0xF); |
b481de9c | 2623 | |
3ac7f146 | 2624 | return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size; |
b481de9c ZY |
2625 | } |
2626 | ||
4a8a4322 | 2627 | void iwl3945_hw_rx_handler_setup(struct iwl_priv *priv) |
b481de9c | 2628 | { |
91c066f2 | 2629 | priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx; |
b481de9c ZY |
2630 | priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx; |
2631 | } | |
2632 | ||
4a8a4322 | 2633 | void iwl3945_hw_setup_deferred_work(struct iwl_priv *priv) |
b481de9c | 2634 | { |
ee525d13 | 2635 | INIT_DELAYED_WORK(&priv->_3945.thermal_periodic, |
b481de9c ZY |
2636 | iwl3945_bg_reg_txpower_periodic); |
2637 | } | |
2638 | ||
4a8a4322 | 2639 | void iwl3945_hw_cancel_deferred_work(struct iwl_priv *priv) |
b481de9c | 2640 | { |
ee525d13 | 2641 | cancel_delayed_work(&priv->_3945.thermal_periodic); |
b481de9c ZY |
2642 | } |
2643 | ||
0164b9b4 KA |
2644 | /* check contents of special bootstrap uCode SRAM */ |
2645 | static int iwl3945_verify_bsm(struct iwl_priv *priv) | |
2646 | { | |
2647 | __le32 *image = priv->ucode_boot.v_addr; | |
2648 | u32 len = priv->ucode_boot.len; | |
2649 | u32 reg; | |
2650 | u32 val; | |
2651 | ||
e1623446 | 2652 | IWL_DEBUG_INFO(priv, "Begin verify bsm\n"); |
0164b9b4 KA |
2653 | |
2654 | /* verify BSM SRAM contents */ | |
2655 | val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG); | |
2656 | for (reg = BSM_SRAM_LOWER_BOUND; | |
2657 | reg < BSM_SRAM_LOWER_BOUND + len; | |
2658 | reg += sizeof(u32), image++) { | |
2659 | val = iwl_read_prph(priv, reg); | |
2660 | if (val != le32_to_cpu(*image)) { | |
2661 | IWL_ERR(priv, "BSM uCode verification failed at " | |
2662 | "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", | |
2663 | BSM_SRAM_LOWER_BOUND, | |
2664 | reg - BSM_SRAM_LOWER_BOUND, len, | |
2665 | val, le32_to_cpu(*image)); | |
2666 | return -EIO; | |
2667 | } | |
2668 | } | |
2669 | ||
e1623446 | 2670 | IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n"); |
0164b9b4 KA |
2671 | |
2672 | return 0; | |
2673 | } | |
2674 | ||
e6148917 SO |
2675 | |
2676 | /****************************************************************************** | |
2677 | * | |
2678 | * EEPROM related functions | |
2679 | * | |
2680 | ******************************************************************************/ | |
2681 | ||
2682 | /* | |
2683 | * Clear the OWNER_MSK, to establish driver (instead of uCode running on | |
2684 | * embedded controller) as EEPROM reader; each read is a series of pulses | |
2685 | * to/from the EEPROM chip, not a single event, so even reads could conflict | |
2686 | * if they weren't arbitrated by some ownership mechanism. Here, the driver | |
2687 | * simply claims ownership, which should be safe when this function is called | |
2688 | * (i.e. before loading uCode!). | |
2689 | */ | |
2690 | static int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv) | |
2691 | { | |
2692 | _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK); | |
2693 | return 0; | |
2694 | } | |
2695 | ||
2696 | ||
2697 | static void iwl3945_eeprom_release_semaphore(struct iwl_priv *priv) | |
2698 | { | |
2699 | return; | |
2700 | } | |
2701 | ||
0164b9b4 KA |
2702 | /** |
2703 | * iwl3945_load_bsm - Load bootstrap instructions | |
2704 | * | |
2705 | * BSM operation: | |
2706 | * | |
2707 | * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program | |
2708 | * in special SRAM that does not power down during RFKILL. When powering back | |
2709 | * up after power-saving sleeps (or during initial uCode load), the BSM loads | |
2710 | * the bootstrap program into the on-board processor, and starts it. | |
2711 | * | |
2712 | * The bootstrap program loads (via DMA) instructions and data for a new | |
2713 | * program from host DRAM locations indicated by the host driver in the | |
2714 | * BSM_DRAM_* registers. Once the new program is loaded, it starts | |
2715 | * automatically. | |
2716 | * | |
2717 | * When initializing the NIC, the host driver points the BSM to the | |
2718 | * "initialize" uCode image. This uCode sets up some internal data, then | |
2719 | * notifies host via "initialize alive" that it is complete. | |
2720 | * | |
2721 | * The host then replaces the BSM_DRAM_* pointer values to point to the | |
2722 | * normal runtime uCode instructions and a backup uCode data cache buffer | |
2723 | * (filled initially with starting data values for the on-board processor), | |
2724 | * then triggers the "initialize" uCode to load and launch the runtime uCode, | |
2725 | * which begins normal operation. | |
2726 | * | |
2727 | * When doing a power-save shutdown, runtime uCode saves data SRAM into | |
2728 | * the backup data cache in DRAM before SRAM is powered down. | |
2729 | * | |
2730 | * When powering back up, the BSM loads the bootstrap program. This reloads | |
2731 | * the runtime uCode instructions and the backup data cache into SRAM, | |
2732 | * and re-launches the runtime uCode from where it left off. | |
2733 | */ | |
2734 | static int iwl3945_load_bsm(struct iwl_priv *priv) | |
2735 | { | |
2736 | __le32 *image = priv->ucode_boot.v_addr; | |
2737 | u32 len = priv->ucode_boot.len; | |
2738 | dma_addr_t pinst; | |
2739 | dma_addr_t pdata; | |
2740 | u32 inst_len; | |
2741 | u32 data_len; | |
2742 | int rc; | |
2743 | int i; | |
2744 | u32 done; | |
2745 | u32 reg_offset; | |
2746 | ||
e1623446 | 2747 | IWL_DEBUG_INFO(priv, "Begin load bsm\n"); |
0164b9b4 KA |
2748 | |
2749 | /* make sure bootstrap program is no larger than BSM's SRAM size */ | |
2750 | if (len > IWL39_MAX_BSM_SIZE) | |
2751 | return -EINVAL; | |
2752 | ||
2753 | /* Tell bootstrap uCode where to find the "Initialize" uCode | |
2754 | * in host DRAM ... host DRAM physical address bits 31:0 for 3945. | |
2755 | * NOTE: iwl3945_initialize_alive_start() will replace these values, | |
2756 | * after the "initialize" uCode has run, to point to | |
2757 | * runtime/protocol instructions and backup data cache. */ | |
2758 | pinst = priv->ucode_init.p_addr; | |
2759 | pdata = priv->ucode_init_data.p_addr; | |
2760 | inst_len = priv->ucode_init.len; | |
2761 | data_len = priv->ucode_init_data.len; | |
2762 | ||
0164b9b4 KA |
2763 | iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); |
2764 | iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
2765 | iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); | |
2766 | iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); | |
2767 | ||
2768 | /* Fill BSM memory with bootstrap instructions */ | |
2769 | for (reg_offset = BSM_SRAM_LOWER_BOUND; | |
2770 | reg_offset < BSM_SRAM_LOWER_BOUND + len; | |
2771 | reg_offset += sizeof(u32), image++) | |
2772 | _iwl_write_prph(priv, reg_offset, | |
2773 | le32_to_cpu(*image)); | |
2774 | ||
2775 | rc = iwl3945_verify_bsm(priv); | |
a8b50a0a | 2776 | if (rc) |
0164b9b4 | 2777 | return rc; |
0164b9b4 KA |
2778 | |
2779 | /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ | |
2780 | iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); | |
2781 | iwl_write_prph(priv, BSM_WR_MEM_DST_REG, | |
2782 | IWL39_RTC_INST_LOWER_BOUND); | |
2783 | iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); | |
2784 | ||
2785 | /* Load bootstrap code into instruction SRAM now, | |
2786 | * to prepare to load "initialize" uCode */ | |
2787 | iwl_write_prph(priv, BSM_WR_CTRL_REG, | |
2788 | BSM_WR_CTRL_REG_BIT_START); | |
2789 | ||
2790 | /* Wait for load of bootstrap uCode to finish */ | |
2791 | for (i = 0; i < 100; i++) { | |
2792 | done = iwl_read_prph(priv, BSM_WR_CTRL_REG); | |
2793 | if (!(done & BSM_WR_CTRL_REG_BIT_START)) | |
2794 | break; | |
2795 | udelay(10); | |
2796 | } | |
2797 | if (i < 100) | |
e1623446 | 2798 | IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i); |
0164b9b4 KA |
2799 | else { |
2800 | IWL_ERR(priv, "BSM write did not complete!\n"); | |
2801 | return -EIO; | |
2802 | } | |
2803 | ||
2804 | /* Enable future boot loads whenever power management unit triggers it | |
2805 | * (e.g. when powering back up after power-save shutdown) */ | |
2806 | iwl_write_prph(priv, BSM_WR_CTRL_REG, | |
2807 | BSM_WR_CTRL_REG_BIT_START_EN); | |
2808 | ||
0164b9b4 KA |
2809 | return 0; |
2810 | } | |
2811 | ||
5bbe233b AK |
2812 | static struct iwl_hcmd_ops iwl3945_hcmd = { |
2813 | .rxon_assoc = iwl3945_send_rxon_assoc, | |
e0158e61 | 2814 | .commit_rxon = iwl3945_commit_rxon, |
65b52bde | 2815 | .send_bt_config = iwl_send_bt_config, |
5bbe233b AK |
2816 | }; |
2817 | ||
0164b9b4 | 2818 | static struct iwl_lib_ops iwl3945_lib = { |
7aaa1d79 SO |
2819 | .txq_attach_buf_to_tfd = iwl3945_hw_txq_attach_buf_to_tfd, |
2820 | .txq_free_tfd = iwl3945_hw_txq_free_tfd, | |
a8e74e27 | 2821 | .txq_init = iwl3945_hw_tx_queue_init, |
0164b9b4 | 2822 | .load_ucode = iwl3945_load_bsm, |
b7a79404 RC |
2823 | .dump_nic_event_log = iwl3945_dump_nic_event_log, |
2824 | .dump_nic_error_log = iwl3945_dump_nic_error_log, | |
01ec616d KA |
2825 | .apm_ops = { |
2826 | .init = iwl3945_apm_init, | |
d68b603c | 2827 | .stop = iwl_apm_stop, |
01ec616d | 2828 | .config = iwl3945_nic_config, |
854682ed | 2829 | .set_pwr_src = iwl3945_set_pwr_src, |
01ec616d | 2830 | }, |
e6148917 SO |
2831 | .eeprom_ops = { |
2832 | .regulatory_bands = { | |
2833 | EEPROM_REGULATORY_BAND_1_CHANNELS, | |
2834 | EEPROM_REGULATORY_BAND_2_CHANNELS, | |
2835 | EEPROM_REGULATORY_BAND_3_CHANNELS, | |
2836 | EEPROM_REGULATORY_BAND_4_CHANNELS, | |
2837 | EEPROM_REGULATORY_BAND_5_CHANNELS, | |
7aafef1c WYG |
2838 | EEPROM_REGULATORY_BAND_NO_HT40, |
2839 | EEPROM_REGULATORY_BAND_NO_HT40, | |
e6148917 SO |
2840 | }, |
2841 | .verify_signature = iwlcore_eeprom_verify_signature, | |
2842 | .acquire_semaphore = iwl3945_eeprom_acquire_semaphore, | |
2843 | .release_semaphore = iwl3945_eeprom_release_semaphore, | |
2844 | .query_addr = iwlcore_eeprom_query_addr, | |
2845 | }, | |
75bcfae9 | 2846 | .send_tx_power = iwl3945_send_tx_power, |
c2436980 | 2847 | .is_valid_rtc_data_addr = iwl3945_hw_valid_rtc_data_addr, |
5bbe233b | 2848 | .post_associate = iwl3945_post_associate, |
ef850d7c | 2849 | .isr = iwl_isr_legacy, |
60690a6a | 2850 | .config_ap = iwl3945_config_ap, |
1fa61b2e | 2851 | .manage_ibss_station = iwl3945_manage_ibss_station, |
a29576a7 | 2852 | .check_plcp_health = iwl3945_good_plcp_health, |
17f36fc6 AK |
2853 | |
2854 | .debugfs_ops = { | |
2855 | .rx_stats_read = iwl3945_ucode_rx_stats_read, | |
2856 | .tx_stats_read = iwl3945_ucode_tx_stats_read, | |
2857 | .general_stats_read = iwl3945_ucode_general_stats_read, | |
2858 | }, | |
0164b9b4 KA |
2859 | }; |
2860 | ||
42427b4e KA |
2861 | static struct iwl_hcmd_utils_ops iwl3945_hcmd_utils = { |
2862 | .get_hcmd_size = iwl3945_get_hcmd_size, | |
17f841cd | 2863 | .build_addsta_hcmd = iwl3945_build_addsta_hcmd, |
37dc70fe | 2864 | .rts_tx_cmd_flag = iwlcore_rts_tx_cmd_flag, |
b6e4c55a | 2865 | .request_scan = iwl3945_request_scan, |
42427b4e KA |
2866 | }; |
2867 | ||
45d5d805 | 2868 | static const struct iwl_ops iwl3945_ops = { |
0164b9b4 | 2869 | .lib = &iwl3945_lib, |
5bbe233b | 2870 | .hcmd = &iwl3945_hcmd, |
42427b4e | 2871 | .utils = &iwl3945_hcmd_utils, |
e932a609 | 2872 | .led = &iwl3945_led_ops, |
0164b9b4 KA |
2873 | }; |
2874 | ||
c0f20d91 | 2875 | static struct iwl_cfg iwl3945_bg_cfg = { |
82b9a121 | 2876 | .name = "3945BG", |
a0987a8d RC |
2877 | .fw_name_pre = IWL3945_FW_PRE, |
2878 | .ucode_api_max = IWL3945_UCODE_API_MAX, | |
2879 | .ucode_api_min = IWL3945_UCODE_API_MIN, | |
82b9a121 | 2880 | .sku = IWL_SKU_G, |
e6148917 SO |
2881 | .eeprom_size = IWL3945_EEPROM_IMG_SIZE, |
2882 | .eeprom_ver = EEPROM_3945_EEPROM_VERSION, | |
0164b9b4 | 2883 | .ops = &iwl3945_ops, |
88804e2b | 2884 | .num_of_queues = IWL39_NUM_QUEUES, |
ef850d7c | 2885 | .mod_params = &iwl3945_mod_params, |
fadb3582 BC |
2886 | .pll_cfg_val = CSR39_ANA_PLL_CFG_VAL, |
2887 | .set_l0s = false, | |
2888 | .use_bsm = true, | |
b261793d DH |
2889 | .use_isr_legacy = true, |
2890 | .ht_greenfield_support = false, | |
f2d0d0e2 | 2891 | .led_compensation = 64, |
bc45a670 | 2892 | .broken_powersave = true, |
a29576a7 | 2893 | .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF, |
b74e31a9 | 2894 | .monitor_recover_period = IWL_MONITORING_PERIOD, |
678b385d | 2895 | .max_event_log_size = 512, |
4e7033ef | 2896 | .tx_power_by_driver = true, |
82b9a121 TW |
2897 | }; |
2898 | ||
c0f20d91 | 2899 | static struct iwl_cfg iwl3945_abg_cfg = { |
82b9a121 | 2900 | .name = "3945ABG", |
a0987a8d RC |
2901 | .fw_name_pre = IWL3945_FW_PRE, |
2902 | .ucode_api_max = IWL3945_UCODE_API_MAX, | |
2903 | .ucode_api_min = IWL3945_UCODE_API_MIN, | |
82b9a121 | 2904 | .sku = IWL_SKU_A|IWL_SKU_G, |
e6148917 SO |
2905 | .eeprom_size = IWL3945_EEPROM_IMG_SIZE, |
2906 | .eeprom_ver = EEPROM_3945_EEPROM_VERSION, | |
0164b9b4 | 2907 | .ops = &iwl3945_ops, |
88804e2b | 2908 | .num_of_queues = IWL39_NUM_QUEUES, |
ef850d7c | 2909 | .mod_params = &iwl3945_mod_params, |
b261793d DH |
2910 | .use_isr_legacy = true, |
2911 | .ht_greenfield_support = false, | |
f2d0d0e2 | 2912 | .led_compensation = 64, |
bc45a670 | 2913 | .broken_powersave = true, |
a29576a7 | 2914 | .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF, |
b74e31a9 | 2915 | .monitor_recover_period = IWL_MONITORING_PERIOD, |
678b385d | 2916 | .max_event_log_size = 512, |
4e7033ef | 2917 | .tx_power_by_driver = true, |
82b9a121 TW |
2918 | }; |
2919 | ||
a3aa1884 | 2920 | DEFINE_PCI_DEVICE_TABLE(iwl3945_hw_card_ids) = { |
82b9a121 TW |
2921 | {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)}, |
2922 | {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)}, | |
2923 | {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)}, | |
2924 | {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)}, | |
2925 | {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)}, | |
2926 | {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)}, | |
b481de9c ZY |
2927 | {0} |
2928 | }; | |
2929 | ||
bb8c093b | 2930 | MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids); |