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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
eb7ae89c | 3 | * Copyright(c) 2003 - 2008 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 ZY |
29 | #include <linux/init.h> |
30 | #include <linux/pci.h> | |
31 | #include <linux/dma-mapping.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/netdevice.h> | |
35 | #include <linux/wireless.h> | |
36 | #include <linux/firmware.h> | |
b481de9c | 37 | #include <linux/etherdevice.h> |
12342c47 ZY |
38 | #include <asm/unaligned.h> |
39 | #include <net/mac80211.h> | |
b481de9c | 40 | |
82b9a121 | 41 | #include "iwl-3945-core.h" |
b481de9c | 42 | #include "iwl-3945.h" |
5d08cd1d | 43 | #include "iwl-helpers.h" |
b481de9c ZY |
44 | #include "iwl-3945-rs.h" |
45 | ||
46 | #define IWL_DECLARE_RATE_INFO(r, ip, in, rp, rn, pp, np) \ | |
47 | [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ | |
48 | IWL_RATE_##r##M_IEEE, \ | |
49 | IWL_RATE_##ip##M_INDEX, \ | |
50 | IWL_RATE_##in##M_INDEX, \ | |
51 | IWL_RATE_##rp##M_INDEX, \ | |
52 | IWL_RATE_##rn##M_INDEX, \ | |
53 | IWL_RATE_##pp##M_INDEX, \ | |
14577f23 MA |
54 | IWL_RATE_##np##M_INDEX, \ |
55 | IWL_RATE_##r##M_INDEX_TABLE, \ | |
56 | IWL_RATE_##ip##M_INDEX_TABLE } | |
b481de9c ZY |
57 | |
58 | /* | |
59 | * Parameter order: | |
60 | * rate, prev rate, next rate, prev tgg rate, next tgg rate | |
61 | * | |
62 | * If there isn't a valid next or previous rate then INV is used which | |
63 | * maps to IWL_RATE_INVALID | |
64 | * | |
65 | */ | |
bb8c093b | 66 | const struct iwl3945_rate_info iwl3945_rates[IWL_RATE_COUNT] = { |
14577f23 MA |
67 | IWL_DECLARE_RATE_INFO(1, INV, 2, INV, 2, INV, 2), /* 1mbps */ |
68 | IWL_DECLARE_RATE_INFO(2, 1, 5, 1, 5, 1, 5), /* 2mbps */ | |
69 | IWL_DECLARE_RATE_INFO(5, 2, 6, 2, 11, 2, 11), /*5.5mbps */ | |
70 | IWL_DECLARE_RATE_INFO(11, 9, 12, 5, 12, 5, 18), /* 11mbps */ | |
b481de9c ZY |
71 | IWL_DECLARE_RATE_INFO(6, 5, 9, 5, 11, 5, 11), /* 6mbps */ |
72 | IWL_DECLARE_RATE_INFO(9, 6, 11, 5, 11, 5, 11), /* 9mbps */ | |
73 | IWL_DECLARE_RATE_INFO(12, 11, 18, 11, 18, 11, 18), /* 12mbps */ | |
74 | IWL_DECLARE_RATE_INFO(18, 12, 24, 12, 24, 11, 24), /* 18mbps */ | |
75 | IWL_DECLARE_RATE_INFO(24, 18, 36, 18, 36, 18, 36), /* 24mbps */ | |
76 | IWL_DECLARE_RATE_INFO(36, 24, 48, 24, 48, 24, 48), /* 36mbps */ | |
77 | IWL_DECLARE_RATE_INFO(48, 36, 54, 36, 54, 36, 54), /* 48mbps */ | |
78 | IWL_DECLARE_RATE_INFO(54, 48, INV, 48, INV, 48, INV),/* 54mbps */ | |
b481de9c ZY |
79 | }; |
80 | ||
bb8c093b | 81 | /* 1 = enable the iwl3945_disable_events() function */ |
b481de9c ZY |
82 | #define IWL_EVT_DISABLE (0) |
83 | #define IWL_EVT_DISABLE_SIZE (1532/32) | |
84 | ||
85 | /** | |
bb8c093b | 86 | * iwl3945_disable_events - Disable selected events in uCode event log |
b481de9c ZY |
87 | * |
88 | * Disable an event by writing "1"s into "disable" | |
89 | * bitmap in SRAM. Bit position corresponds to Event # (id/type). | |
90 | * Default values of 0 enable uCode events to be logged. | |
91 | * Use for only special debugging. This function is just a placeholder as-is, | |
92 | * you'll need to provide the special bits! ... | |
93 | * ... and set IWL_EVT_DISABLE to 1. */ | |
bb8c093b | 94 | void iwl3945_disable_events(struct iwl3945_priv *priv) |
b481de9c | 95 | { |
af7cca2a | 96 | int ret; |
b481de9c ZY |
97 | int i; |
98 | u32 base; /* SRAM address of event log header */ | |
99 | u32 disable_ptr; /* SRAM address of event-disable bitmap array */ | |
100 | u32 array_size; /* # of u32 entries in array */ | |
101 | u32 evt_disable[IWL_EVT_DISABLE_SIZE] = { | |
102 | 0x00000000, /* 31 - 0 Event id numbers */ | |
103 | 0x00000000, /* 63 - 32 */ | |
104 | 0x00000000, /* 95 - 64 */ | |
105 | 0x00000000, /* 127 - 96 */ | |
106 | 0x00000000, /* 159 - 128 */ | |
107 | 0x00000000, /* 191 - 160 */ | |
108 | 0x00000000, /* 223 - 192 */ | |
109 | 0x00000000, /* 255 - 224 */ | |
110 | 0x00000000, /* 287 - 256 */ | |
111 | 0x00000000, /* 319 - 288 */ | |
112 | 0x00000000, /* 351 - 320 */ | |
113 | 0x00000000, /* 383 - 352 */ | |
114 | 0x00000000, /* 415 - 384 */ | |
115 | 0x00000000, /* 447 - 416 */ | |
116 | 0x00000000, /* 479 - 448 */ | |
117 | 0x00000000, /* 511 - 480 */ | |
118 | 0x00000000, /* 543 - 512 */ | |
119 | 0x00000000, /* 575 - 544 */ | |
120 | 0x00000000, /* 607 - 576 */ | |
121 | 0x00000000, /* 639 - 608 */ | |
122 | 0x00000000, /* 671 - 640 */ | |
123 | 0x00000000, /* 703 - 672 */ | |
124 | 0x00000000, /* 735 - 704 */ | |
125 | 0x00000000, /* 767 - 736 */ | |
126 | 0x00000000, /* 799 - 768 */ | |
127 | 0x00000000, /* 831 - 800 */ | |
128 | 0x00000000, /* 863 - 832 */ | |
129 | 0x00000000, /* 895 - 864 */ | |
130 | 0x00000000, /* 927 - 896 */ | |
131 | 0x00000000, /* 959 - 928 */ | |
132 | 0x00000000, /* 991 - 960 */ | |
133 | 0x00000000, /* 1023 - 992 */ | |
134 | 0x00000000, /* 1055 - 1024 */ | |
135 | 0x00000000, /* 1087 - 1056 */ | |
136 | 0x00000000, /* 1119 - 1088 */ | |
137 | 0x00000000, /* 1151 - 1120 */ | |
138 | 0x00000000, /* 1183 - 1152 */ | |
139 | 0x00000000, /* 1215 - 1184 */ | |
140 | 0x00000000, /* 1247 - 1216 */ | |
141 | 0x00000000, /* 1279 - 1248 */ | |
142 | 0x00000000, /* 1311 - 1280 */ | |
143 | 0x00000000, /* 1343 - 1312 */ | |
144 | 0x00000000, /* 1375 - 1344 */ | |
145 | 0x00000000, /* 1407 - 1376 */ | |
146 | 0x00000000, /* 1439 - 1408 */ | |
147 | 0x00000000, /* 1471 - 1440 */ | |
148 | 0x00000000, /* 1503 - 1472 */ | |
149 | }; | |
150 | ||
151 | base = le32_to_cpu(priv->card_alive.log_event_table_ptr); | |
bb8c093b | 152 | if (!iwl3945_hw_valid_rtc_data_addr(base)) { |
b481de9c ZY |
153 | IWL_ERROR("Invalid event log pointer 0x%08X\n", base); |
154 | return; | |
155 | } | |
156 | ||
bb8c093b | 157 | ret = iwl3945_grab_nic_access(priv); |
af7cca2a | 158 | if (ret) { |
b481de9c ZY |
159 | IWL_WARNING("Can not read from adapter at this time.\n"); |
160 | return; | |
161 | } | |
162 | ||
bb8c093b CH |
163 | disable_ptr = iwl3945_read_targ_mem(priv, base + (4 * sizeof(u32))); |
164 | array_size = iwl3945_read_targ_mem(priv, base + (5 * sizeof(u32))); | |
165 | iwl3945_release_nic_access(priv); | |
b481de9c ZY |
166 | |
167 | if (IWL_EVT_DISABLE && (array_size == IWL_EVT_DISABLE_SIZE)) { | |
168 | IWL_DEBUG_INFO("Disabling selected uCode log events at 0x%x\n", | |
169 | disable_ptr); | |
bb8c093b | 170 | ret = iwl3945_grab_nic_access(priv); |
b481de9c | 171 | for (i = 0; i < IWL_EVT_DISABLE_SIZE; i++) |
bb8c093b | 172 | iwl3945_write_targ_mem(priv, |
af7cca2a TW |
173 | disable_ptr + (i * sizeof(u32)), |
174 | evt_disable[i]); | |
b481de9c | 175 | |
bb8c093b | 176 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
177 | } else { |
178 | IWL_DEBUG_INFO("Selected uCode log events may be disabled\n"); | |
179 | IWL_DEBUG_INFO(" by writing \"1\"s into disable bitmap\n"); | |
180 | IWL_DEBUG_INFO(" in SRAM at 0x%x, size %d u32s\n", | |
181 | disable_ptr, array_size); | |
182 | } | |
183 | ||
184 | } | |
185 | ||
17744ff6 TW |
186 | static int iwl3945_hwrate_to_plcp_idx(u8 plcp) |
187 | { | |
188 | int idx; | |
189 | ||
190 | for (idx = 0; idx < IWL_RATE_COUNT; idx++) | |
191 | if (iwl3945_rates[idx].plcp == plcp) | |
192 | return idx; | |
193 | return -1; | |
194 | } | |
195 | ||
b481de9c ZY |
196 | /** |
197 | * iwl3945_get_antenna_flags - Get antenna flags for RXON command | |
198 | * @priv: eeprom and antenna fields are used to determine antenna flags | |
199 | * | |
200 | * priv->eeprom is used to determine if antenna AUX/MAIN are reversed | |
201 | * priv->antenna specifies the antenna diversity mode: | |
202 | * | |
a96a27f9 | 203 | * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself |
b481de9c ZY |
204 | * IWL_ANTENNA_MAIN - Force MAIN antenna |
205 | * IWL_ANTENNA_AUX - Force AUX antenna | |
206 | */ | |
bb8c093b | 207 | __le32 iwl3945_get_antenna_flags(const struct iwl3945_priv *priv) |
b481de9c ZY |
208 | { |
209 | switch (priv->antenna) { | |
210 | case IWL_ANTENNA_DIVERSITY: | |
211 | return 0; | |
212 | ||
213 | case IWL_ANTENNA_MAIN: | |
214 | if (priv->eeprom.antenna_switch_type) | |
215 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
216 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
217 | ||
218 | case IWL_ANTENNA_AUX: | |
219 | if (priv->eeprom.antenna_switch_type) | |
220 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
221 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
222 | } | |
223 | ||
224 | /* bad antenna selector value */ | |
225 | IWL_ERROR("Bad antenna selector value (0x%x)\n", priv->antenna); | |
226 | return 0; /* "diversity" is default if error */ | |
227 | } | |
228 | ||
91c066f2 TW |
229 | #ifdef CONFIG_IWL3945_DEBUG |
230 | #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x | |
231 | ||
232 | static const char *iwl3945_get_tx_fail_reason(u32 status) | |
233 | { | |
234 | switch (status & TX_STATUS_MSK) { | |
235 | case TX_STATUS_SUCCESS: | |
236 | return "SUCCESS"; | |
237 | TX_STATUS_ENTRY(SHORT_LIMIT); | |
238 | TX_STATUS_ENTRY(LONG_LIMIT); | |
239 | TX_STATUS_ENTRY(FIFO_UNDERRUN); | |
240 | TX_STATUS_ENTRY(MGMNT_ABORT); | |
241 | TX_STATUS_ENTRY(NEXT_FRAG); | |
242 | TX_STATUS_ENTRY(LIFE_EXPIRE); | |
243 | TX_STATUS_ENTRY(DEST_PS); | |
244 | TX_STATUS_ENTRY(ABORTED); | |
245 | TX_STATUS_ENTRY(BT_RETRY); | |
246 | TX_STATUS_ENTRY(STA_INVALID); | |
247 | TX_STATUS_ENTRY(FRAG_DROPPED); | |
248 | TX_STATUS_ENTRY(TID_DISABLE); | |
249 | TX_STATUS_ENTRY(FRAME_FLUSHED); | |
250 | TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL); | |
251 | TX_STATUS_ENTRY(TX_LOCKED); | |
252 | TX_STATUS_ENTRY(NO_BEACON_ON_RADAR); | |
253 | } | |
254 | ||
255 | return "UNKNOWN"; | |
256 | } | |
257 | #else | |
258 | static inline const char *iwl3945_get_tx_fail_reason(u32 status) | |
259 | { | |
260 | return ""; | |
261 | } | |
262 | #endif | |
263 | ||
e6a9854b JB |
264 | /* |
265 | * get ieee prev rate from rate scale table. | |
266 | * for A and B mode we need to overright prev | |
267 | * value | |
268 | */ | |
269 | int iwl3945_rs_next_rate(struct iwl3945_priv *priv, int rate) | |
270 | { | |
271 | int next_rate = iwl3945_get_prev_ieee_rate(rate); | |
272 | ||
273 | switch (priv->band) { | |
274 | case IEEE80211_BAND_5GHZ: | |
275 | if (rate == IWL_RATE_12M_INDEX) | |
276 | next_rate = IWL_RATE_9M_INDEX; | |
277 | else if (rate == IWL_RATE_6M_INDEX) | |
278 | next_rate = IWL_RATE_6M_INDEX; | |
279 | break; | |
7262796a AM |
280 | case IEEE80211_BAND_2GHZ: |
281 | if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) && | |
282 | iwl3945_is_associated(priv)) { | |
283 | if (rate == IWL_RATE_11M_INDEX) | |
284 | next_rate = IWL_RATE_5M_INDEX; | |
285 | } | |
e6a9854b | 286 | break; |
7262796a | 287 | |
e6a9854b JB |
288 | default: |
289 | break; | |
290 | } | |
291 | ||
292 | return next_rate; | |
293 | } | |
294 | ||
91c066f2 TW |
295 | |
296 | /** | |
297 | * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd | |
298 | * | |
299 | * When FW advances 'R' index, all entries between old and new 'R' index | |
300 | * need to be reclaimed. As result, some free space forms. If there is | |
301 | * enough free space (> low mark), wake the stack that feeds us. | |
302 | */ | |
303 | static void iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, | |
304 | int txq_id, int index) | |
305 | { | |
306 | struct iwl3945_tx_queue *txq = &priv->txq[txq_id]; | |
307 | struct iwl3945_queue *q = &txq->q; | |
308 | struct iwl3945_tx_info *tx_info; | |
309 | ||
310 | BUG_ON(txq_id == IWL_CMD_QUEUE_NUM); | |
311 | ||
312 | for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index; | |
313 | q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) { | |
314 | ||
315 | tx_info = &txq->txb[txq->q.read_ptr]; | |
e039fa4a | 316 | ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]); |
91c066f2 TW |
317 | tx_info->skb[0] = NULL; |
318 | iwl3945_hw_txq_free_tfd(priv, txq); | |
319 | } | |
320 | ||
321 | if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) && | |
322 | (txq_id != IWL_CMD_QUEUE_NUM) && | |
323 | priv->mac80211_registered) | |
324 | ieee80211_wake_queue(priv->hw, txq_id); | |
325 | } | |
326 | ||
327 | /** | |
328 | * iwl3945_rx_reply_tx - Handle Tx response | |
329 | */ | |
330 | static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv, | |
331 | struct iwl3945_rx_mem_buffer *rxb) | |
332 | { | |
333 | struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data; | |
334 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
335 | int txq_id = SEQ_TO_QUEUE(sequence); | |
336 | int index = SEQ_TO_INDEX(sequence); | |
337 | struct iwl3945_tx_queue *txq = &priv->txq[txq_id]; | |
e039fa4a | 338 | struct ieee80211_tx_info *info; |
91c066f2 TW |
339 | struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
340 | u32 status = le32_to_cpu(tx_resp->status); | |
341 | int rate_idx; | |
74221d07 | 342 | int fail; |
91c066f2 TW |
343 | |
344 | if ((index >= txq->q.n_bd) || (iwl3945_x2_queue_used(&txq->q, index) == 0)) { | |
345 | IWL_ERROR("Read index for DMA queue txq_id (%d) index %d " | |
346 | "is out of range [0-%d] %d %d\n", txq_id, | |
347 | index, txq->q.n_bd, txq->q.write_ptr, | |
348 | txq->q.read_ptr); | |
349 | return; | |
350 | } | |
351 | ||
e039fa4a | 352 | info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]); |
e6a9854b JB |
353 | ieee80211_tx_info_clear_status(info); |
354 | ||
355 | /* Fill the MRR chain with some info about on-chip retransmissions */ | |
356 | rate_idx = iwl3945_hwrate_to_plcp_idx(tx_resp->rate); | |
357 | if (info->band == IEEE80211_BAND_5GHZ) | |
358 | rate_idx -= IWL_FIRST_OFDM_RATE; | |
359 | ||
360 | fail = tx_resp->failure_frame; | |
74221d07 AM |
361 | |
362 | info->status.rates[0].idx = rate_idx; | |
363 | info->status.rates[0].count = fail + 1; /* add final attempt */ | |
91c066f2 | 364 | |
91c066f2 | 365 | /* tx_status->rts_retry_count = tx_resp->failure_rts; */ |
e039fa4a JB |
366 | info->flags |= ((status & TX_STATUS_MSK) == TX_STATUS_SUCCESS) ? |
367 | IEEE80211_TX_STAT_ACK : 0; | |
91c066f2 TW |
368 | |
369 | IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n", | |
370 | txq_id, iwl3945_get_tx_fail_reason(status), status, | |
371 | tx_resp->rate, tx_resp->failure_frame); | |
372 | ||
91c066f2 TW |
373 | IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index); |
374 | iwl3945_tx_queue_reclaim(priv, txq_id, index); | |
375 | ||
376 | if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) | |
377 | IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); | |
378 | } | |
379 | ||
380 | ||
381 | ||
b481de9c ZY |
382 | /***************************************************************************** |
383 | * | |
384 | * Intel PRO/Wireless 3945ABG/BG Network Connection | |
385 | * | |
386 | * RX handler implementations | |
387 | * | |
b481de9c ZY |
388 | *****************************************************************************/ |
389 | ||
bb8c093b | 390 | void iwl3945_hw_rx_statistics(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb) |
b481de9c | 391 | { |
bb8c093b | 392 | struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c | 393 | IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n", |
bb8c093b | 394 | (int)sizeof(struct iwl3945_notif_statistics), |
b481de9c ZY |
395 | le32_to_cpu(pkt->len)); |
396 | ||
397 | memcpy(&priv->statistics, pkt->u.raw, sizeof(priv->statistics)); | |
398 | ||
ab53d8af MA |
399 | iwl3945_led_background(priv); |
400 | ||
b481de9c ZY |
401 | priv->last_statistics_time = jiffies; |
402 | } | |
403 | ||
17744ff6 TW |
404 | /****************************************************************************** |
405 | * | |
406 | * Misc. internal state and helper functions | |
407 | * | |
408 | ******************************************************************************/ | |
409 | #ifdef CONFIG_IWL3945_DEBUG | |
410 | ||
411 | /** | |
412 | * iwl3945_report_frame - dump frame to syslog during debug sessions | |
413 | * | |
414 | * You may hack this function to show different aspects of received frames, | |
415 | * including selective frame dumps. | |
416 | * group100 parameter selects whether to show 1 out of 100 good frames. | |
417 | */ | |
418 | static void iwl3945_dbg_report_frame(struct iwl3945_priv *priv, | |
419 | struct iwl3945_rx_packet *pkt, | |
420 | struct ieee80211_hdr *header, int group100) | |
421 | { | |
422 | u32 to_us; | |
423 | u32 print_summary = 0; | |
424 | u32 print_dump = 0; /* set to 1 to dump all frames' contents */ | |
425 | u32 hundred = 0; | |
426 | u32 dataframe = 0; | |
fd7c8a40 | 427 | __le16 fc; |
17744ff6 TW |
428 | u16 seq_ctl; |
429 | u16 channel; | |
430 | u16 phy_flags; | |
431 | u16 length; | |
432 | u16 status; | |
433 | u16 bcn_tmr; | |
434 | u32 tsf_low; | |
435 | u64 tsf; | |
436 | u8 rssi; | |
437 | u8 agc; | |
438 | u16 sig_avg; | |
439 | u16 noise_diff; | |
440 | struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
441 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
442 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
443 | u8 *data = IWL_RX_DATA(pkt); | |
444 | ||
445 | /* MAC header */ | |
fd7c8a40 | 446 | fc = header->frame_control; |
17744ff6 TW |
447 | seq_ctl = le16_to_cpu(header->seq_ctrl); |
448 | ||
449 | /* metadata */ | |
450 | channel = le16_to_cpu(rx_hdr->channel); | |
451 | phy_flags = le16_to_cpu(rx_hdr->phy_flags); | |
452 | length = le16_to_cpu(rx_hdr->len); | |
453 | ||
454 | /* end-of-frame status and timestamp */ | |
455 | status = le32_to_cpu(rx_end->status); | |
456 | bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); | |
457 | tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; | |
458 | tsf = le64_to_cpu(rx_end->timestamp); | |
459 | ||
460 | /* signal statistics */ | |
461 | rssi = rx_stats->rssi; | |
462 | agc = rx_stats->agc; | |
463 | sig_avg = le16_to_cpu(rx_stats->sig_avg); | |
464 | noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
465 | ||
466 | to_us = !compare_ether_addr(header->addr1, priv->mac_addr); | |
467 | ||
468 | /* if data frame is to us and all is good, | |
469 | * (optionally) print summary for only 1 out of every 100 */ | |
fd7c8a40 HH |
470 | if (to_us && (fc & ~cpu_to_le16(IEEE80211_FCTL_PROTECTED)) == |
471 | cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) { | |
17744ff6 TW |
472 | dataframe = 1; |
473 | if (!group100) | |
474 | print_summary = 1; /* print each frame */ | |
475 | else if (priv->framecnt_to_us < 100) { | |
476 | priv->framecnt_to_us++; | |
477 | print_summary = 0; | |
478 | } else { | |
479 | priv->framecnt_to_us = 0; | |
480 | print_summary = 1; | |
481 | hundred = 1; | |
482 | } | |
483 | } else { | |
484 | /* print summary for all other frames */ | |
485 | print_summary = 1; | |
486 | } | |
487 | ||
488 | if (print_summary) { | |
489 | char *title; | |
0ff1cca0 | 490 | int rate; |
17744ff6 TW |
491 | |
492 | if (hundred) | |
493 | title = "100Frames"; | |
fd7c8a40 | 494 | else if (ieee80211_has_retry(fc)) |
17744ff6 | 495 | title = "Retry"; |
fd7c8a40 | 496 | else if (ieee80211_is_assoc_resp(fc)) |
17744ff6 | 497 | title = "AscRsp"; |
fd7c8a40 | 498 | else if (ieee80211_is_reassoc_resp(fc)) |
17744ff6 | 499 | title = "RasRsp"; |
fd7c8a40 | 500 | else if (ieee80211_is_probe_resp(fc)) { |
17744ff6 TW |
501 | title = "PrbRsp"; |
502 | print_dump = 1; /* dump frame contents */ | |
503 | } else if (ieee80211_is_beacon(fc)) { | |
504 | title = "Beacon"; | |
505 | print_dump = 1; /* dump frame contents */ | |
506 | } else if (ieee80211_is_atim(fc)) | |
507 | title = "ATIM"; | |
508 | else if (ieee80211_is_auth(fc)) | |
509 | title = "Auth"; | |
510 | else if (ieee80211_is_deauth(fc)) | |
511 | title = "DeAuth"; | |
512 | else if (ieee80211_is_disassoc(fc)) | |
513 | title = "DisAssoc"; | |
514 | else | |
515 | title = "Frame"; | |
516 | ||
517 | rate = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate); | |
518 | if (rate == -1) | |
519 | rate = 0; | |
520 | else | |
521 | rate = iwl3945_rates[rate].ieee / 2; | |
522 | ||
523 | /* print frame summary. | |
524 | * MAC addresses show just the last byte (for brevity), | |
525 | * but you can hack it to show more, if you'd like to. */ | |
526 | if (dataframe) | |
527 | IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, " | |
0ff1cca0 | 528 | "len=%u, rssi=%d, chnl=%d, rate=%d, \n", |
fd7c8a40 | 529 | title, le16_to_cpu(fc), header->addr1[5], |
17744ff6 TW |
530 | length, rssi, channel, rate); |
531 | else { | |
532 | /* src/dst addresses assume managed mode */ | |
533 | IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, " | |
534 | "src=0x%02x, rssi=%u, tim=%lu usec, " | |
535 | "phy=0x%02x, chnl=%d\n", | |
fd7c8a40 | 536 | title, le16_to_cpu(fc), header->addr1[5], |
17744ff6 TW |
537 | header->addr3[5], rssi, |
538 | tsf_low - priv->scan_start_tsf, | |
539 | phy_flags, channel); | |
540 | } | |
541 | } | |
542 | if (print_dump) | |
543 | iwl3945_print_hex_dump(IWL_DL_RX, data, length); | |
544 | } | |
545 | #else | |
546 | static inline void iwl3945_dbg_report_frame(struct iwl3945_priv *priv, | |
547 | struct iwl3945_rx_packet *pkt, | |
548 | struct ieee80211_hdr *header, int group100) | |
549 | { | |
550 | } | |
551 | #endif | |
552 | ||
4bd9b4f3 AG |
553 | /* This is necessary only for a number of statistics, see the caller. */ |
554 | static int iwl3945_is_network_packet(struct iwl3945_priv *priv, | |
555 | struct ieee80211_hdr *header) | |
556 | { | |
557 | /* Filter incoming packets to determine if they are targeted toward | |
558 | * this network, discarding packets coming from ourselves */ | |
559 | switch (priv->iw_mode) { | |
05c914fe | 560 | case NL80211_IFTYPE_ADHOC: /* Header: Dest. | Source | BSSID */ |
4bd9b4f3 AG |
561 | /* packets to our IBSS update information */ |
562 | return !compare_ether_addr(header->addr3, priv->bssid); | |
05c914fe | 563 | case NL80211_IFTYPE_STATION: /* Header: Dest. | AP{BSSID} | Source */ |
4bd9b4f3 AG |
564 | /* packets to our IBSS update information */ |
565 | return !compare_ether_addr(header->addr2, priv->bssid); | |
566 | default: | |
567 | return 1; | |
568 | } | |
569 | } | |
17744ff6 | 570 | |
4bd9b4f3 | 571 | static void iwl3945_pass_packet_to_mac80211(struct iwl3945_priv *priv, |
bb8c093b | 572 | struct iwl3945_rx_mem_buffer *rxb, |
12342c47 | 573 | struct ieee80211_rx_status *stats) |
b481de9c | 574 | { |
bb8c093b | 575 | struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data; |
699669f3 | 576 | #ifdef CONFIG_IWL3945_LEDS |
4bd9b4f3 | 577 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); |
699669f3 | 578 | #endif |
bb8c093b CH |
579 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); |
580 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
b481de9c ZY |
581 | short len = le16_to_cpu(rx_hdr->len); |
582 | ||
583 | /* We received data from the HW, so stop the watchdog */ | |
584 | if (unlikely((len + IWL_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) { | |
585 | IWL_DEBUG_DROP("Corruption detected!\n"); | |
586 | return; | |
587 | } | |
588 | ||
589 | /* We only process data packets if the interface is open */ | |
590 | if (unlikely(!priv->is_open)) { | |
591 | IWL_DEBUG_DROP_LIMIT | |
592 | ("Dropping packet while interface is not open.\n"); | |
593 | return; | |
594 | } | |
b481de9c ZY |
595 | |
596 | skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt); | |
597 | /* Set the size of the skb to the size of the frame */ | |
598 | skb_put(rxb->skb, le16_to_cpu(rx_hdr->len)); | |
599 | ||
bb8c093b CH |
600 | if (iwl3945_param_hwcrypto) |
601 | iwl3945_set_decrypted_flag(priv, rxb->skb, | |
b481de9c ZY |
602 | le32_to_cpu(rx_end->status), stats); |
603 | ||
ab53d8af | 604 | #ifdef CONFIG_IWL3945_LEDS |
4bd9b4f3 | 605 | if (ieee80211_is_data(hdr->frame_control)) |
ab53d8af MA |
606 | priv->rxtxpackets += len; |
607 | #endif | |
b481de9c ZY |
608 | ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); |
609 | rxb->skb = NULL; | |
610 | } | |
611 | ||
7878a5a4 MA |
612 | #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
613 | ||
bb8c093b CH |
614 | static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv, |
615 | struct iwl3945_rx_mem_buffer *rxb) | |
b481de9c | 616 | { |
17744ff6 TW |
617 | struct ieee80211_hdr *header; |
618 | struct ieee80211_rx_status rx_status; | |
bb8c093b CH |
619 | struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data; |
620 | struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
621 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
622 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
17744ff6 | 623 | int snr; |
b481de9c ZY |
624 | u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg); |
625 | u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
b481de9c | 626 | u8 network_packet; |
17744ff6 | 627 | |
17744ff6 TW |
628 | rx_status.flag = 0; |
629 | rx_status.mactime = le64_to_cpu(rx_end->timestamp); | |
dc92e497 | 630 | rx_status.freq = |
c0186078 | 631 | ieee80211_channel_to_frequency(le16_to_cpu(rx_hdr->channel)); |
17744ff6 TW |
632 | rx_status.band = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? |
633 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
634 | ||
635 | rx_status.rate_idx = iwl3945_hwrate_to_plcp_idx(rx_hdr->rate); | |
17744ff6 TW |
636 | if (rx_status.band == IEEE80211_BAND_5GHZ) |
637 | rx_status.rate_idx -= IWL_FIRST_OFDM_RATE; | |
b481de9c | 638 | |
6f0a2c4d BR |
639 | rx_status.antenna = le16_to_cpu(rx_hdr->phy_flags & |
640 | RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; | |
641 | ||
642 | /* set the preamble flag if appropriate */ | |
643 | if (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
644 | rx_status.flag |= RX_FLAG_SHORTPRE; | |
645 | ||
b481de9c ZY |
646 | if ((unlikely(rx_stats->phy_count > 20))) { |
647 | IWL_DEBUG_DROP | |
648 | ("dsp size out of range [0,20]: " | |
649 | "%d/n", rx_stats->phy_count); | |
650 | return; | |
651 | } | |
652 | ||
653 | if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) | |
654 | || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { | |
655 | IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status); | |
656 | return; | |
657 | } | |
658 | ||
56decd3c | 659 | |
b481de9c ZY |
660 | |
661 | /* Convert 3945's rssi indicator to dBm */ | |
566bfe5a | 662 | rx_status.signal = rx_stats->rssi - IWL_RSSI_OFFSET; |
b481de9c ZY |
663 | |
664 | /* Set default noise value to -127 */ | |
665 | if (priv->last_rx_noise == 0) | |
666 | priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; | |
667 | ||
668 | /* 3945 provides noise info for OFDM frames only. | |
669 | * sig_avg and noise_diff are measured by the 3945's digital signal | |
670 | * processor (DSP), and indicate linear levels of signal level and | |
671 | * distortion/noise within the packet preamble after | |
672 | * automatic gain control (AGC). sig_avg should stay fairly | |
673 | * constant if the radio's AGC is working well. | |
674 | * Since these values are linear (not dB or dBm), linear | |
675 | * signal-to-noise ratio (SNR) is (sig_avg / noise_diff). | |
676 | * Convert linear SNR to dB SNR, then subtract that from rssi dBm | |
677 | * to obtain noise level in dBm. | |
17744ff6 | 678 | * Calculate rx_status.signal (quality indicator in %) based on SNR. */ |
b481de9c ZY |
679 | if (rx_stats_noise_diff) { |
680 | snr = rx_stats_sig_avg / rx_stats_noise_diff; | |
566bfe5a | 681 | rx_status.noise = rx_status.signal - |
17744ff6 | 682 | iwl3945_calc_db_from_ratio(snr); |
566bfe5a | 683 | rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, |
17744ff6 | 684 | rx_status.noise); |
b481de9c ZY |
685 | |
686 | /* If noise info not available, calculate signal quality indicator (%) | |
687 | * using just the dBm signal level. */ | |
688 | } else { | |
17744ff6 | 689 | rx_status.noise = priv->last_rx_noise; |
566bfe5a | 690 | rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0); |
b481de9c ZY |
691 | } |
692 | ||
693 | ||
694 | IWL_DEBUG_STATS("Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n", | |
566bfe5a | 695 | rx_status.signal, rx_status.noise, rx_status.qual, |
b481de9c ZY |
696 | rx_stats_sig_avg, rx_stats_noise_diff); |
697 | ||
b481de9c ZY |
698 | header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); |
699 | ||
bb8c093b | 700 | network_packet = iwl3945_is_network_packet(priv, header); |
b481de9c | 701 | |
17744ff6 TW |
702 | IWL_DEBUG_STATS_LIMIT("[%c] %d RSSI:%d Signal:%u, Noise:%u, Rate:%u\n", |
703 | network_packet ? '*' : ' ', | |
704 | le16_to_cpu(rx_hdr->channel), | |
566bfe5a BR |
705 | rx_status.signal, rx_status.signal, |
706 | rx_status.noise, rx_status.rate_idx); | |
b481de9c | 707 | |
17744ff6 | 708 | #ifdef CONFIG_IWL3945_DEBUG |
bb8c093b | 709 | if (iwl3945_debug_level & (IWL_DL_RX)) |
b481de9c | 710 | /* Set "1" to report good data frames in groups of 100 */ |
17744ff6 | 711 | iwl3945_dbg_report_frame(priv, pkt, header, 1); |
b481de9c ZY |
712 | #endif |
713 | ||
714 | if (network_packet) { | |
715 | priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp); | |
716 | priv->last_tsf = le64_to_cpu(rx_end->timestamp); | |
566bfe5a | 717 | priv->last_rx_rssi = rx_status.signal; |
17744ff6 | 718 | priv->last_rx_noise = rx_status.noise; |
b481de9c ZY |
719 | } |
720 | ||
12e5e22d | 721 | iwl3945_pass_packet_to_mac80211(priv, rxb, &rx_status); |
b481de9c ZY |
722 | } |
723 | ||
bb8c093b | 724 | int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl3945_priv *priv, void *ptr, |
b481de9c ZY |
725 | dma_addr_t addr, u16 len) |
726 | { | |
727 | int count; | |
728 | u32 pad; | |
bb8c093b | 729 | struct iwl3945_tfd_frame *tfd = (struct iwl3945_tfd_frame *)ptr; |
b481de9c ZY |
730 | |
731 | count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); | |
732 | pad = TFD_CTL_PAD_GET(le32_to_cpu(tfd->control_flags)); | |
733 | ||
734 | if ((count >= NUM_TFD_CHUNKS) || (count < 0)) { | |
735 | IWL_ERROR("Error can not send more than %d chunks\n", | |
736 | NUM_TFD_CHUNKS); | |
737 | return -EINVAL; | |
738 | } | |
739 | ||
740 | tfd->pa[count].addr = cpu_to_le32(addr); | |
741 | tfd->pa[count].len = cpu_to_le32(len); | |
742 | ||
743 | count++; | |
744 | ||
745 | tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) | | |
746 | TFD_CTL_PAD_SET(pad)); | |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
751 | /** | |
bb8c093b | 752 | * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr] |
b481de9c ZY |
753 | * |
754 | * Does NOT advance any indexes | |
755 | */ | |
bb8c093b | 756 | int iwl3945_hw_txq_free_tfd(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq) |
b481de9c | 757 | { |
bb8c093b CH |
758 | struct iwl3945_tfd_frame *bd_tmp = (struct iwl3945_tfd_frame *)&txq->bd[0]; |
759 | struct iwl3945_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; | |
b481de9c ZY |
760 | struct pci_dev *dev = priv->pci_dev; |
761 | int i; | |
762 | int counter; | |
763 | ||
764 | /* classify bd */ | |
765 | if (txq->q.id == IWL_CMD_QUEUE_NUM) | |
766 | /* nothing to cleanup after for host commands */ | |
767 | return 0; | |
768 | ||
769 | /* sanity check */ | |
770 | counter = TFD_CTL_COUNT_GET(le32_to_cpu(bd->control_flags)); | |
771 | if (counter > NUM_TFD_CHUNKS) { | |
772 | IWL_ERROR("Too many chunks: %i\n", counter); | |
773 | /* @todo issue fatal error, it is quite serious situation */ | |
774 | return 0; | |
775 | } | |
776 | ||
777 | /* unmap chunks if any */ | |
778 | ||
779 | for (i = 1; i < counter; i++) { | |
780 | pci_unmap_single(dev, le32_to_cpu(bd->pa[i].addr), | |
781 | le32_to_cpu(bd->pa[i].len), PCI_DMA_TODEVICE); | |
fc4b6853 TW |
782 | if (txq->txb[txq->q.read_ptr].skb[0]) { |
783 | struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0]; | |
784 | if (txq->txb[txq->q.read_ptr].skb[0]) { | |
b481de9c ZY |
785 | /* Can be called from interrupt context */ |
786 | dev_kfree_skb_any(skb); | |
fc4b6853 | 787 | txq->txb[txq->q.read_ptr].skb[0] = NULL; |
b481de9c ZY |
788 | } |
789 | } | |
790 | } | |
791 | return 0; | |
792 | } | |
793 | ||
bb8c093b | 794 | u8 iwl3945_hw_find_station(struct iwl3945_priv *priv, const u8 *addr) |
b481de9c | 795 | { |
c93007ef | 796 | int i, start = IWL_AP_ID; |
b481de9c ZY |
797 | int ret = IWL_INVALID_STATION; |
798 | unsigned long flags; | |
799 | ||
c93007ef SO |
800 | if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) || |
801 | (priv->iw_mode == NL80211_IFTYPE_AP)) | |
802 | start = IWL_STA_ID; | |
803 | ||
804 | if (is_broadcast_ether_addr(addr)) | |
805 | return priv->hw_setting.bcast_sta_id; | |
806 | ||
b481de9c | 807 | spin_lock_irqsave(&priv->sta_lock, flags); |
c93007ef | 808 | for (i = start; i < priv->hw_setting.max_stations; i++) |
b481de9c ZY |
809 | if ((priv->stations[i].used) && |
810 | (!compare_ether_addr | |
811 | (priv->stations[i].sta.sta.addr, addr))) { | |
812 | ret = i; | |
813 | goto out; | |
814 | } | |
815 | ||
e174961c JB |
816 | IWL_DEBUG_INFO("can not find STA %pM (total %d)\n", |
817 | addr, priv->num_stations); | |
b481de9c ZY |
818 | out: |
819 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
820 | return ret; | |
821 | } | |
822 | ||
823 | /** | |
bb8c093b | 824 | * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD: |
b481de9c ZY |
825 | * |
826 | */ | |
bb8c093b CH |
827 | void iwl3945_hw_build_tx_cmd_rate(struct iwl3945_priv *priv, |
828 | struct iwl3945_cmd *cmd, | |
e039fa4a | 829 | struct ieee80211_tx_info *info, |
b481de9c ZY |
830 | struct ieee80211_hdr *hdr, int sta_id, int tx_id) |
831 | { | |
832 | unsigned long flags; | |
e039fa4a | 833 | u16 hw_value = ieee80211_get_tx_rate(priv->hw, info)->hw_value; |
2e92e6f2 | 834 | u16 rate_index = min(hw_value & 0xffff, IWL_RATE_COUNT - 1); |
b481de9c ZY |
835 | u16 rate_mask; |
836 | int rate; | |
837 | u8 rts_retry_limit; | |
838 | u8 data_retry_limit; | |
839 | __le32 tx_flags; | |
fd7c8a40 | 840 | __le16 fc = hdr->frame_control; |
b481de9c | 841 | |
bb8c093b | 842 | rate = iwl3945_rates[rate_index].plcp; |
b481de9c ZY |
843 | tx_flags = cmd->cmd.tx.tx_flags; |
844 | ||
845 | /* We need to figure out how to get the sta->supp_rates while | |
e039fa4a | 846 | * in this running context */ |
b481de9c ZY |
847 | rate_mask = IWL_RATES_MASK; |
848 | ||
849 | spin_lock_irqsave(&priv->sta_lock, flags); | |
850 | ||
851 | priv->stations[sta_id].current_rate.rate_n_flags = rate; | |
852 | ||
05c914fe | 853 | if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) && |
a4062b8f | 854 | (sta_id != priv->hw_setting.bcast_sta_id) && |
b481de9c ZY |
855 | (sta_id != IWL_MULTICAST_ID)) |
856 | priv->stations[IWL_STA_ID].current_rate.rate_n_flags = rate; | |
857 | ||
858 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
859 | ||
860 | if (tx_id >= IWL_CMD_QUEUE_NUM) | |
861 | rts_retry_limit = 3; | |
862 | else | |
863 | rts_retry_limit = 7; | |
864 | ||
fd7c8a40 | 865 | if (ieee80211_is_probe_resp(fc)) { |
b481de9c ZY |
866 | data_retry_limit = 3; |
867 | if (data_retry_limit < rts_retry_limit) | |
868 | rts_retry_limit = data_retry_limit; | |
869 | } else | |
870 | data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
871 | ||
872 | if (priv->data_retry_limit != -1) | |
873 | data_retry_limit = priv->data_retry_limit; | |
874 | ||
fd7c8a40 HH |
875 | if (ieee80211_is_mgmt(fc)) { |
876 | switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) { | |
877 | case cpu_to_le16(IEEE80211_STYPE_AUTH): | |
878 | case cpu_to_le16(IEEE80211_STYPE_DEAUTH): | |
879 | case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ): | |
880 | case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ): | |
b481de9c ZY |
881 | if (tx_flags & TX_CMD_FLG_RTS_MSK) { |
882 | tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
883 | tx_flags |= TX_CMD_FLG_CTS_MSK; | |
884 | } | |
885 | break; | |
886 | default: | |
887 | break; | |
888 | } | |
889 | } | |
890 | ||
891 | cmd->cmd.tx.rts_retry_limit = rts_retry_limit; | |
892 | cmd->cmd.tx.data_retry_limit = data_retry_limit; | |
893 | cmd->cmd.tx.rate = rate; | |
894 | cmd->cmd.tx.tx_flags = tx_flags; | |
895 | ||
896 | /* OFDM */ | |
14577f23 MA |
897 | cmd->cmd.tx.supp_rates[0] = |
898 | ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
b481de9c ZY |
899 | |
900 | /* CCK */ | |
14577f23 | 901 | cmd->cmd.tx.supp_rates[1] = (rate_mask & 0xF); |
b481de9c ZY |
902 | |
903 | IWL_DEBUG_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X " | |
904 | "cck/ofdm mask: 0x%x/0x%x\n", sta_id, | |
905 | cmd->cmd.tx.rate, le32_to_cpu(cmd->cmd.tx.tx_flags), | |
906 | cmd->cmd.tx.supp_rates[1], cmd->cmd.tx.supp_rates[0]); | |
907 | } | |
908 | ||
bb8c093b | 909 | u8 iwl3945_sync_sta(struct iwl3945_priv *priv, int sta_id, u16 tx_rate, u8 flags) |
b481de9c ZY |
910 | { |
911 | unsigned long flags_spin; | |
bb8c093b | 912 | struct iwl3945_station_entry *station; |
b481de9c ZY |
913 | |
914 | if (sta_id == IWL_INVALID_STATION) | |
915 | return IWL_INVALID_STATION; | |
916 | ||
917 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
918 | station = &priv->stations[sta_id]; | |
919 | ||
920 | station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK; | |
921 | station->sta.rate_n_flags = cpu_to_le16(tx_rate); | |
922 | station->current_rate.rate_n_flags = tx_rate; | |
923 | station->sta.mode = STA_CONTROL_MODIFY_MSK; | |
924 | ||
925 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
926 | ||
bb8c093b | 927 | iwl3945_send_add_station(priv, &station->sta, flags); |
b481de9c ZY |
928 | IWL_DEBUG_RATE("SCALE sync station %d to rate %d\n", |
929 | sta_id, tx_rate); | |
930 | return sta_id; | |
931 | } | |
932 | ||
bb8c093b | 933 | static int iwl3945_nic_set_pwr_src(struct iwl3945_priv *priv, int pwr_max) |
b481de9c ZY |
934 | { |
935 | int rc; | |
936 | unsigned long flags; | |
937 | ||
938 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 939 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
940 | if (rc) { |
941 | spin_unlock_irqrestore(&priv->lock, flags); | |
942 | return rc; | |
943 | } | |
944 | ||
945 | if (!pwr_max) { | |
946 | u32 val; | |
947 | ||
948 | rc = pci_read_config_dword(priv->pci_dev, | |
949 | PCI_POWER_SOURCE, &val); | |
950 | if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) { | |
bb8c093b | 951 | iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
952 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
953 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
bb8c093b | 954 | iwl3945_release_nic_access(priv); |
b481de9c | 955 | |
bb8c093b | 956 | iwl3945_poll_bit(priv, CSR_GPIO_IN, |
b481de9c ZY |
957 | CSR_GPIO_IN_VAL_VAUX_PWR_SRC, |
958 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); | |
959 | } else | |
bb8c093b | 960 | iwl3945_release_nic_access(priv); |
b481de9c | 961 | } else { |
bb8c093b | 962 | iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
963 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
964 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
965 | ||
bb8c093b CH |
966 | iwl3945_release_nic_access(priv); |
967 | iwl3945_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC, | |
b481de9c ZY |
968 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */ |
969 | } | |
970 | spin_unlock_irqrestore(&priv->lock, flags); | |
971 | ||
972 | return rc; | |
973 | } | |
974 | ||
bb8c093b | 975 | static int iwl3945_rx_init(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq) |
b481de9c ZY |
976 | { |
977 | int rc; | |
978 | unsigned long flags; | |
979 | ||
980 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 981 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
982 | if (rc) { |
983 | spin_unlock_irqrestore(&priv->lock, flags); | |
984 | return rc; | |
985 | } | |
986 | ||
bb8c093b CH |
987 | iwl3945_write_direct32(priv, FH_RCSR_RBD_BASE(0), rxq->dma_addr); |
988 | iwl3945_write_direct32(priv, FH_RCSR_RPTR_ADDR(0), | |
b481de9c | 989 | priv->hw_setting.shared_phys + |
bb8c093b CH |
990 | offsetof(struct iwl3945_shared, rx_read_ptr[0])); |
991 | iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), 0); | |
992 | iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), | |
b481de9c ZY |
993 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE | |
994 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE | | |
995 | ALM_FH_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN | | |
996 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 | | |
997 | (RX_QUEUE_SIZE_LOG << ALM_FH_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) | | |
998 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST | | |
999 | (1 << ALM_FH_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) | | |
1000 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH); | |
1001 | ||
1002 | /* fake read to flush all prev I/O */ | |
bb8c093b | 1003 | iwl3945_read_direct32(priv, FH_RSSR_CTRL); |
b481de9c | 1004 | |
bb8c093b | 1005 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1006 | spin_unlock_irqrestore(&priv->lock, flags); |
1007 | ||
1008 | return 0; | |
1009 | } | |
1010 | ||
bb8c093b | 1011 | static int iwl3945_tx_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
1012 | { |
1013 | int rc; | |
1014 | unsigned long flags; | |
1015 | ||
1016 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 1017 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
1018 | if (rc) { |
1019 | spin_unlock_irqrestore(&priv->lock, flags); | |
1020 | return rc; | |
1021 | } | |
1022 | ||
1023 | /* bypass mode */ | |
bb8c093b | 1024 | iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0x2); |
b481de9c ZY |
1025 | |
1026 | /* RA 0 is active */ | |
bb8c093b | 1027 | iwl3945_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01); |
b481de9c ZY |
1028 | |
1029 | /* all 6 fifo are active */ | |
bb8c093b | 1030 | iwl3945_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f); |
b481de9c | 1031 | |
bb8c093b CH |
1032 | iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000); |
1033 | iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002); | |
1034 | iwl3945_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004); | |
1035 | iwl3945_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005); | |
b481de9c | 1036 | |
bb8c093b | 1037 | iwl3945_write_direct32(priv, FH_TSSR_CBB_BASE, |
b481de9c ZY |
1038 | priv->hw_setting.shared_phys); |
1039 | ||
bb8c093b | 1040 | iwl3945_write_direct32(priv, FH_TSSR_MSG_CONFIG, |
b481de9c ZY |
1041 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON | |
1042 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON | | |
1043 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B | | |
1044 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON | | |
1045 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON | | |
1046 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH | | |
1047 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH); | |
1048 | ||
bb8c093b | 1049 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1050 | spin_unlock_irqrestore(&priv->lock, flags); |
1051 | ||
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | /** | |
1056 | * iwl3945_txq_ctx_reset - Reset TX queue context | |
1057 | * | |
1058 | * Destroys all DMA structures and initialize them again | |
1059 | */ | |
bb8c093b | 1060 | static int iwl3945_txq_ctx_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
1061 | { |
1062 | int rc; | |
1063 | int txq_id, slots_num; | |
1064 | ||
bb8c093b | 1065 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1066 | |
1067 | /* Tx CMD queue */ | |
1068 | rc = iwl3945_tx_reset(priv); | |
1069 | if (rc) | |
1070 | goto error; | |
1071 | ||
1072 | /* Tx queue(s) */ | |
1073 | for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) { | |
1074 | slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ? | |
1075 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; | |
bb8c093b | 1076 | rc = iwl3945_tx_queue_init(priv, &priv->txq[txq_id], slots_num, |
b481de9c ZY |
1077 | txq_id); |
1078 | if (rc) { | |
1079 | IWL_ERROR("Tx %d queue init failed\n", txq_id); | |
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 | ||
bb8c093b | 1091 | int iwl3945_hw_nic_init(struct iwl3945_priv *priv) |
b481de9c ZY |
1092 | { |
1093 | u8 rev_id; | |
1094 | int rc; | |
1095 | unsigned long flags; | |
bb8c093b | 1096 | struct iwl3945_rx_queue *rxq = &priv->rxq; |
b481de9c | 1097 | |
bb8c093b | 1098 | iwl3945_power_init_handle(priv); |
b481de9c ZY |
1099 | |
1100 | spin_lock_irqsave(&priv->lock, flags); | |
a693f187 | 1101 | iwl3945_set_bit(priv, CSR_ANA_PLL_CFG, CSR39_ANA_PLL_CFG_VAL); |
bb8c093b | 1102 | iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS, |
b481de9c ZY |
1103 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
1104 | ||
bb8c093b | 1105 | iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
73d7b5ac ZY |
1106 | rc = iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL, |
1107 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
b481de9c ZY |
1108 | if (rc < 0) { |
1109 | spin_unlock_irqrestore(&priv->lock, flags); | |
1110 | IWL_DEBUG_INFO("Failed to init the card\n"); | |
1111 | return rc; | |
1112 | } | |
1113 | ||
bb8c093b | 1114 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
1115 | if (rc) { |
1116 | spin_unlock_irqrestore(&priv->lock, flags); | |
1117 | return rc; | |
1118 | } | |
bb8c093b | 1119 | iwl3945_write_prph(priv, APMG_CLK_EN_REG, |
b481de9c ZY |
1120 | APMG_CLK_VAL_DMA_CLK_RQT | |
1121 | APMG_CLK_VAL_BSM_CLK_RQT); | |
1122 | udelay(20); | |
bb8c093b | 1123 | iwl3945_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
b481de9c | 1124 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
bb8c093b | 1125 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1126 | spin_unlock_irqrestore(&priv->lock, flags); |
1127 | ||
1128 | /* Determine HW type */ | |
1129 | rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); | |
1130 | if (rc) | |
1131 | return rc; | |
1132 | IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id); | |
1133 | ||
1134 | iwl3945_nic_set_pwr_src(priv, 1); | |
1135 | spin_lock_irqsave(&priv->lock, flags); | |
1136 | ||
1137 | if (rev_id & PCI_CFG_REV_ID_BIT_RTP) | |
1138 | IWL_DEBUG_INFO("RTP type \n"); | |
1139 | else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) { | |
6f83eaa1 | 1140 | IWL_DEBUG_INFO("3945 RADIO-MB type\n"); |
bb8c093b | 1141 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1142 | CSR39_HW_IF_CONFIG_REG_BIT_3945_MB); |
b481de9c | 1143 | } else { |
6f83eaa1 | 1144 | IWL_DEBUG_INFO("3945 RADIO-MM type\n"); |
bb8c093b | 1145 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1146 | CSR39_HW_IF_CONFIG_REG_BIT_3945_MM); |
b481de9c ZY |
1147 | } |
1148 | ||
b481de9c ZY |
1149 | if (EEPROM_SKU_CAP_OP_MODE_MRC == priv->eeprom.sku_cap) { |
1150 | IWL_DEBUG_INFO("SKU OP mode is mrc\n"); | |
bb8c093b | 1151 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1152 | CSR39_HW_IF_CONFIG_REG_BIT_SKU_MRC); |
b481de9c ZY |
1153 | } else |
1154 | IWL_DEBUG_INFO("SKU OP mode is basic\n"); | |
1155 | ||
1156 | if ((priv->eeprom.board_revision & 0xF0) == 0xD0) { | |
1157 | IWL_DEBUG_INFO("3945ABG revision is 0x%X\n", | |
1158 | priv->eeprom.board_revision); | |
bb8c093b | 1159 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1160 | CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
b481de9c ZY |
1161 | } else { |
1162 | IWL_DEBUG_INFO("3945ABG revision is 0x%X\n", | |
1163 | priv->eeprom.board_revision); | |
bb8c093b | 1164 | iwl3945_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1165 | CSR39_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
b481de9c ZY |
1166 | } |
1167 | ||
1168 | if (priv->eeprom.almgor_m_version <= 1) { | |
bb8c093b | 1169 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1170 | CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A); |
b481de9c ZY |
1171 | IWL_DEBUG_INFO("Card M type A version is 0x%X\n", |
1172 | priv->eeprom.almgor_m_version); | |
1173 | } else { | |
1174 | IWL_DEBUG_INFO("Card M type B version is 0x%X\n", | |
1175 | priv->eeprom.almgor_m_version); | |
bb8c093b | 1176 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
6f83eaa1 | 1177 | CSR39_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B); |
b481de9c ZY |
1178 | } |
1179 | spin_unlock_irqrestore(&priv->lock, flags); | |
1180 | ||
1181 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) | |
1182 | IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n"); | |
1183 | ||
1184 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) | |
1185 | IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n"); | |
1186 | ||
1187 | /* Allocate the RX queue, or reset if it is already allocated */ | |
1188 | if (!rxq->bd) { | |
bb8c093b | 1189 | rc = iwl3945_rx_queue_alloc(priv); |
b481de9c ZY |
1190 | if (rc) { |
1191 | IWL_ERROR("Unable to initialize Rx queue\n"); | |
1192 | return -ENOMEM; | |
1193 | } | |
1194 | } else | |
bb8c093b | 1195 | iwl3945_rx_queue_reset(priv, rxq); |
b481de9c | 1196 | |
bb8c093b | 1197 | iwl3945_rx_replenish(priv); |
b481de9c ZY |
1198 | |
1199 | iwl3945_rx_init(priv, rxq); | |
1200 | ||
1201 | spin_lock_irqsave(&priv->lock, flags); | |
1202 | ||
1203 | /* Look at using this instead: | |
1204 | rxq->need_update = 1; | |
bb8c093b | 1205 | iwl3945_rx_queue_update_write_ptr(priv, rxq); |
b481de9c ZY |
1206 | */ |
1207 | ||
bb8c093b | 1208 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
1209 | if (rc) { |
1210 | spin_unlock_irqrestore(&priv->lock, flags); | |
1211 | return rc; | |
1212 | } | |
bb8c093b CH |
1213 | iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), rxq->write & ~7); |
1214 | iwl3945_release_nic_access(priv); | |
b481de9c ZY |
1215 | |
1216 | spin_unlock_irqrestore(&priv->lock, flags); | |
1217 | ||
1218 | rc = iwl3945_txq_ctx_reset(priv); | |
1219 | if (rc) | |
1220 | return rc; | |
1221 | ||
1222 | set_bit(STATUS_INIT, &priv->status); | |
1223 | ||
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | /** | |
bb8c093b | 1228 | * iwl3945_hw_txq_ctx_free - Free TXQ Context |
b481de9c ZY |
1229 | * |
1230 | * Destroy all TX DMA queues and structures | |
1231 | */ | |
bb8c093b | 1232 | void iwl3945_hw_txq_ctx_free(struct iwl3945_priv *priv) |
b481de9c ZY |
1233 | { |
1234 | int txq_id; | |
1235 | ||
1236 | /* Tx queues */ | |
1237 | for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) | |
bb8c093b | 1238 | iwl3945_tx_queue_free(priv, &priv->txq[txq_id]); |
b481de9c ZY |
1239 | } |
1240 | ||
bb8c093b | 1241 | void iwl3945_hw_txq_ctx_stop(struct iwl3945_priv *priv) |
b481de9c ZY |
1242 | { |
1243 | int queue; | |
1244 | unsigned long flags; | |
1245 | ||
1246 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 1247 | if (iwl3945_grab_nic_access(priv)) { |
b481de9c | 1248 | spin_unlock_irqrestore(&priv->lock, flags); |
bb8c093b | 1249 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1250 | return; |
1251 | } | |
1252 | ||
1253 | /* stop SCD */ | |
bb8c093b | 1254 | iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0); |
b481de9c ZY |
1255 | |
1256 | /* reset TFD queues */ | |
1257 | for (queue = TFD_QUEUE_MIN; queue < TFD_QUEUE_MAX; queue++) { | |
bb8c093b CH |
1258 | iwl3945_write_direct32(priv, FH_TCSR_CONFIG(queue), 0x0); |
1259 | iwl3945_poll_direct_bit(priv, FH_TSSR_TX_STATUS, | |
b481de9c ZY |
1260 | ALM_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(queue), |
1261 | 1000); | |
1262 | } | |
1263 | ||
bb8c093b | 1264 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1265 | spin_unlock_irqrestore(&priv->lock, flags); |
1266 | ||
bb8c093b | 1267 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1268 | } |
1269 | ||
bb8c093b | 1270 | int iwl3945_hw_nic_stop_master(struct iwl3945_priv *priv) |
b481de9c ZY |
1271 | { |
1272 | int rc = 0; | |
1273 | u32 reg_val; | |
1274 | unsigned long flags; | |
1275 | ||
1276 | spin_lock_irqsave(&priv->lock, flags); | |
1277 | ||
1278 | /* set stop master bit */ | |
bb8c093b | 1279 | iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
b481de9c | 1280 | |
bb8c093b | 1281 | reg_val = iwl3945_read32(priv, CSR_GP_CNTRL); |
b481de9c ZY |
1282 | |
1283 | if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE == | |
1284 | (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE)) | |
1285 | IWL_DEBUG_INFO("Card in power save, master is already " | |
1286 | "stopped\n"); | |
1287 | else { | |
73d7b5ac | 1288 | rc = iwl3945_poll_direct_bit(priv, CSR_RESET, |
b481de9c ZY |
1289 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); |
1290 | if (rc < 0) { | |
1291 | spin_unlock_irqrestore(&priv->lock, flags); | |
1292 | return rc; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | spin_unlock_irqrestore(&priv->lock, flags); | |
1297 | IWL_DEBUG_INFO("stop master\n"); | |
1298 | ||
1299 | return rc; | |
1300 | } | |
1301 | ||
bb8c093b | 1302 | int iwl3945_hw_nic_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
1303 | { |
1304 | int rc; | |
1305 | unsigned long flags; | |
1306 | ||
bb8c093b | 1307 | iwl3945_hw_nic_stop_master(priv); |
b481de9c ZY |
1308 | |
1309 | spin_lock_irqsave(&priv->lock, flags); | |
1310 | ||
bb8c093b | 1311 | iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
b481de9c | 1312 | |
73d7b5ac ZY |
1313 | iwl3945_poll_direct_bit(priv, CSR_GP_CNTRL, |
1314 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
b481de9c | 1315 | |
bb8c093b | 1316 | rc = iwl3945_grab_nic_access(priv); |
b481de9c | 1317 | if (!rc) { |
bb8c093b | 1318 | iwl3945_write_prph(priv, APMG_CLK_CTRL_REG, |
b481de9c ZY |
1319 | APMG_CLK_VAL_BSM_CLK_RQT); |
1320 | ||
1321 | udelay(10); | |
1322 | ||
bb8c093b | 1323 | iwl3945_set_bit(priv, CSR_GP_CNTRL, |
b481de9c ZY |
1324 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
1325 | ||
bb8c093b CH |
1326 | iwl3945_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0); |
1327 | iwl3945_write_prph(priv, APMG_RTC_INT_STT_REG, | |
b481de9c ZY |
1328 | 0xFFFFFFFF); |
1329 | ||
1330 | /* enable DMA */ | |
bb8c093b | 1331 | iwl3945_write_prph(priv, APMG_CLK_EN_REG, |
b481de9c ZY |
1332 | APMG_CLK_VAL_DMA_CLK_RQT | |
1333 | APMG_CLK_VAL_BSM_CLK_RQT); | |
1334 | udelay(10); | |
1335 | ||
bb8c093b | 1336 | iwl3945_set_bits_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
1337 | APMG_PS_CTRL_VAL_RESET_REQ); |
1338 | udelay(5); | |
bb8c093b | 1339 | iwl3945_clear_bits_prph(priv, APMG_PS_CTRL_REG, |
b481de9c | 1340 | APMG_PS_CTRL_VAL_RESET_REQ); |
bb8c093b | 1341 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1342 | } |
1343 | ||
1344 | /* Clear the 'host command active' bit... */ | |
1345 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
1346 | ||
1347 | wake_up_interruptible(&priv->wait_command_queue); | |
1348 | spin_unlock_irqrestore(&priv->lock, flags); | |
1349 | ||
1350 | return rc; | |
1351 | } | |
1352 | ||
1353 | /** | |
bb8c093b | 1354 | * iwl3945_hw_reg_adjust_power_by_temp |
bbc5807b IS |
1355 | * return index delta into power gain settings table |
1356 | */ | |
bb8c093b | 1357 | static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading) |
b481de9c ZY |
1358 | { |
1359 | return (new_reading - old_reading) * (-11) / 100; | |
1360 | } | |
1361 | ||
1362 | /** | |
bb8c093b | 1363 | * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range |
b481de9c | 1364 | */ |
bb8c093b | 1365 | static inline int iwl3945_hw_reg_temp_out_of_range(int temperature) |
b481de9c | 1366 | { |
3ac7f146 | 1367 | return ((temperature < -260) || (temperature > 25)) ? 1 : 0; |
b481de9c ZY |
1368 | } |
1369 | ||
bb8c093b | 1370 | int iwl3945_hw_get_temperature(struct iwl3945_priv *priv) |
b481de9c | 1371 | { |
bb8c093b | 1372 | return iwl3945_read32(priv, CSR_UCODE_DRV_GP2); |
b481de9c ZY |
1373 | } |
1374 | ||
1375 | /** | |
bb8c093b | 1376 | * iwl3945_hw_reg_txpower_get_temperature |
bbc5807b IS |
1377 | * get the current temperature by reading from NIC |
1378 | */ | |
bb8c093b | 1379 | static int iwl3945_hw_reg_txpower_get_temperature(struct iwl3945_priv *priv) |
b481de9c ZY |
1380 | { |
1381 | int temperature; | |
1382 | ||
bb8c093b | 1383 | temperature = iwl3945_hw_get_temperature(priv); |
b481de9c ZY |
1384 | |
1385 | /* driver's okay range is -260 to +25. | |
1386 | * human readable okay range is 0 to +285 */ | |
1387 | IWL_DEBUG_INFO("Temperature: %d\n", temperature + IWL_TEMP_CONVERT); | |
1388 | ||
1389 | /* handle insane temp reading */ | |
bb8c093b | 1390 | if (iwl3945_hw_reg_temp_out_of_range(temperature)) { |
b481de9c ZY |
1391 | IWL_ERROR("Error bad temperature value %d\n", temperature); |
1392 | ||
1393 | /* if really really hot(?), | |
1394 | * substitute the 3rd band/group's temp measured at factory */ | |
1395 | if (priv->last_temperature > 100) | |
1396 | temperature = priv->eeprom.groups[2].temperature; | |
1397 | else /* else use most recent "sane" value from driver */ | |
1398 | temperature = priv->last_temperature; | |
1399 | } | |
1400 | ||
1401 | return temperature; /* raw, not "human readable" */ | |
1402 | } | |
1403 | ||
1404 | /* Adjust Txpower only if temperature variance is greater than threshold. | |
1405 | * | |
1406 | * Both are lower than older versions' 9 degrees */ | |
1407 | #define IWL_TEMPERATURE_LIMIT_TIMER 6 | |
1408 | ||
1409 | /** | |
1410 | * is_temp_calib_needed - determines if new calibration is needed | |
1411 | * | |
1412 | * records new temperature in tx_mgr->temperature. | |
1413 | * replaces tx_mgr->last_temperature *only* if calib needed | |
1414 | * (assumes caller will actually do the calibration!). */ | |
bb8c093b | 1415 | static int is_temp_calib_needed(struct iwl3945_priv *priv) |
b481de9c ZY |
1416 | { |
1417 | int temp_diff; | |
1418 | ||
bb8c093b | 1419 | priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
1420 | temp_diff = priv->temperature - priv->last_temperature; |
1421 | ||
1422 | /* get absolute value */ | |
1423 | if (temp_diff < 0) { | |
1424 | IWL_DEBUG_POWER("Getting cooler, delta %d,\n", temp_diff); | |
1425 | temp_diff = -temp_diff; | |
1426 | } else if (temp_diff == 0) | |
1427 | IWL_DEBUG_POWER("Same temp,\n"); | |
1428 | else | |
1429 | IWL_DEBUG_POWER("Getting warmer, delta %d,\n", temp_diff); | |
1430 | ||
1431 | /* if we don't need calibration, *don't* update last_temperature */ | |
1432 | if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) { | |
1433 | IWL_DEBUG_POWER("Timed thermal calib not needed\n"); | |
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | IWL_DEBUG_POWER("Timed thermal calib needed\n"); | |
1438 | ||
1439 | /* assume that caller will actually do calib ... | |
1440 | * update the "last temperature" value */ | |
1441 | priv->last_temperature = priv->temperature; | |
1442 | return 1; | |
1443 | } | |
1444 | ||
1445 | #define IWL_MAX_GAIN_ENTRIES 78 | |
1446 | #define IWL_CCK_FROM_OFDM_POWER_DIFF -5 | |
1447 | #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10) | |
1448 | ||
1449 | /* radio and DSP power table, each step is 1/2 dB. | |
1450 | * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */ | |
bb8c093b | 1451 | static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = { |
b481de9c ZY |
1452 | { |
1453 | {251, 127}, /* 2.4 GHz, highest power */ | |
1454 | {251, 127}, | |
1455 | {251, 127}, | |
1456 | {251, 127}, | |
1457 | {251, 125}, | |
1458 | {251, 110}, | |
1459 | {251, 105}, | |
1460 | {251, 98}, | |
1461 | {187, 125}, | |
1462 | {187, 115}, | |
1463 | {187, 108}, | |
1464 | {187, 99}, | |
1465 | {243, 119}, | |
1466 | {243, 111}, | |
1467 | {243, 105}, | |
1468 | {243, 97}, | |
1469 | {243, 92}, | |
1470 | {211, 106}, | |
1471 | {211, 100}, | |
1472 | {179, 120}, | |
1473 | {179, 113}, | |
1474 | {179, 107}, | |
1475 | {147, 125}, | |
1476 | {147, 119}, | |
1477 | {147, 112}, | |
1478 | {147, 106}, | |
1479 | {147, 101}, | |
1480 | {147, 97}, | |
1481 | {147, 91}, | |
1482 | {115, 107}, | |
1483 | {235, 121}, | |
1484 | {235, 115}, | |
1485 | {235, 109}, | |
1486 | {203, 127}, | |
1487 | {203, 121}, | |
1488 | {203, 115}, | |
1489 | {203, 108}, | |
1490 | {203, 102}, | |
1491 | {203, 96}, | |
1492 | {203, 92}, | |
1493 | {171, 110}, | |
1494 | {171, 104}, | |
1495 | {171, 98}, | |
1496 | {139, 116}, | |
1497 | {227, 125}, | |
1498 | {227, 119}, | |
1499 | {227, 113}, | |
1500 | {227, 107}, | |
1501 | {227, 101}, | |
1502 | {227, 96}, | |
1503 | {195, 113}, | |
1504 | {195, 106}, | |
1505 | {195, 102}, | |
1506 | {195, 95}, | |
1507 | {163, 113}, | |
1508 | {163, 106}, | |
1509 | {163, 102}, | |
1510 | {163, 95}, | |
1511 | {131, 113}, | |
1512 | {131, 106}, | |
1513 | {131, 102}, | |
1514 | {131, 95}, | |
1515 | {99, 113}, | |
1516 | {99, 106}, | |
1517 | {99, 102}, | |
1518 | {99, 95}, | |
1519 | {67, 113}, | |
1520 | {67, 106}, | |
1521 | {67, 102}, | |
1522 | {67, 95}, | |
1523 | {35, 113}, | |
1524 | {35, 106}, | |
1525 | {35, 102}, | |
1526 | {35, 95}, | |
1527 | {3, 113}, | |
1528 | {3, 106}, | |
1529 | {3, 102}, | |
1530 | {3, 95} }, /* 2.4 GHz, lowest power */ | |
1531 | { | |
1532 | {251, 127}, /* 5.x GHz, highest power */ | |
1533 | {251, 120}, | |
1534 | {251, 114}, | |
1535 | {219, 119}, | |
1536 | {219, 101}, | |
1537 | {187, 113}, | |
1538 | {187, 102}, | |
1539 | {155, 114}, | |
1540 | {155, 103}, | |
1541 | {123, 117}, | |
1542 | {123, 107}, | |
1543 | {123, 99}, | |
1544 | {123, 92}, | |
1545 | {91, 108}, | |
1546 | {59, 125}, | |
1547 | {59, 118}, | |
1548 | {59, 109}, | |
1549 | {59, 102}, | |
1550 | {59, 96}, | |
1551 | {59, 90}, | |
1552 | {27, 104}, | |
1553 | {27, 98}, | |
1554 | {27, 92}, | |
1555 | {115, 118}, | |
1556 | {115, 111}, | |
1557 | {115, 104}, | |
1558 | {83, 126}, | |
1559 | {83, 121}, | |
1560 | {83, 113}, | |
1561 | {83, 105}, | |
1562 | {83, 99}, | |
1563 | {51, 118}, | |
1564 | {51, 111}, | |
1565 | {51, 104}, | |
1566 | {51, 98}, | |
1567 | {19, 116}, | |
1568 | {19, 109}, | |
1569 | {19, 102}, | |
1570 | {19, 98}, | |
1571 | {19, 93}, | |
1572 | {171, 113}, | |
1573 | {171, 107}, | |
1574 | {171, 99}, | |
1575 | {139, 120}, | |
1576 | {139, 113}, | |
1577 | {139, 107}, | |
1578 | {139, 99}, | |
1579 | {107, 120}, | |
1580 | {107, 113}, | |
1581 | {107, 107}, | |
1582 | {107, 99}, | |
1583 | {75, 120}, | |
1584 | {75, 113}, | |
1585 | {75, 107}, | |
1586 | {75, 99}, | |
1587 | {43, 120}, | |
1588 | {43, 113}, | |
1589 | {43, 107}, | |
1590 | {43, 99}, | |
1591 | {11, 120}, | |
1592 | {11, 113}, | |
1593 | {11, 107}, | |
1594 | {11, 99}, | |
1595 | {131, 107}, | |
1596 | {131, 99}, | |
1597 | {99, 120}, | |
1598 | {99, 113}, | |
1599 | {99, 107}, | |
1600 | {99, 99}, | |
1601 | {67, 120}, | |
1602 | {67, 113}, | |
1603 | {67, 107}, | |
1604 | {67, 99}, | |
1605 | {35, 120}, | |
1606 | {35, 113}, | |
1607 | {35, 107}, | |
1608 | {35, 99}, | |
1609 | {3, 120} } /* 5.x GHz, lowest power */ | |
1610 | }; | |
1611 | ||
bb8c093b | 1612 | static inline u8 iwl3945_hw_reg_fix_power_index(int index) |
b481de9c ZY |
1613 | { |
1614 | if (index < 0) | |
1615 | return 0; | |
1616 | if (index >= IWL_MAX_GAIN_ENTRIES) | |
1617 | return IWL_MAX_GAIN_ENTRIES - 1; | |
1618 | return (u8) index; | |
1619 | } | |
1620 | ||
1621 | /* Kick off thermal recalibration check every 60 seconds */ | |
1622 | #define REG_RECALIB_PERIOD (60) | |
1623 | ||
1624 | /** | |
bb8c093b | 1625 | * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests |
b481de9c ZY |
1626 | * |
1627 | * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK) | |
1628 | * or 6 Mbit (OFDM) rates. | |
1629 | */ | |
bb8c093b | 1630 | static void iwl3945_hw_reg_set_scan_power(struct iwl3945_priv *priv, u32 scan_tbl_index, |
b481de9c | 1631 | s32 rate_index, const s8 *clip_pwrs, |
bb8c093b | 1632 | struct iwl3945_channel_info *ch_info, |
b481de9c ZY |
1633 | int band_index) |
1634 | { | |
bb8c093b | 1635 | struct iwl3945_scan_power_info *scan_power_info; |
b481de9c ZY |
1636 | s8 power; |
1637 | u8 power_index; | |
1638 | ||
1639 | scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index]; | |
1640 | ||
1641 | /* use this channel group's 6Mbit clipping/saturation pwr, | |
1642 | * but cap at regulatory scan power restriction (set during init | |
1643 | * based on eeprom channel data) for this channel. */ | |
14577f23 | 1644 | power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]); |
b481de9c ZY |
1645 | |
1646 | /* further limit to user's max power preference. | |
1647 | * FIXME: Other spectrum management power limitations do not | |
1648 | * seem to apply?? */ | |
1649 | power = min(power, priv->user_txpower_limit); | |
1650 | scan_power_info->requested_power = power; | |
1651 | ||
1652 | /* find difference between new scan *power* and current "normal" | |
1653 | * Tx *power* for 6Mb. Use this difference (x2) to adjust the | |
1654 | * current "normal" temperature-compensated Tx power *index* for | |
1655 | * this rate (1Mb or 6Mb) to yield new temp-compensated scan power | |
1656 | * *index*. */ | |
1657 | power_index = ch_info->power_info[rate_index].power_table_index | |
1658 | - (power - ch_info->power_info | |
14577f23 | 1659 | [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2; |
b481de9c ZY |
1660 | |
1661 | /* store reference index that we use when adjusting *all* scan | |
1662 | * powers. So we can accommodate user (all channel) or spectrum | |
1663 | * management (single channel) power changes "between" temperature | |
1664 | * feedback compensation procedures. | |
1665 | * don't force fit this reference index into gain table; it may be a | |
1666 | * negative number. This will help avoid errors when we're at | |
1667 | * the lower bounds (highest gains, for warmest temperatures) | |
1668 | * of the table. */ | |
1669 | ||
1670 | /* don't exceed table bounds for "real" setting */ | |
bb8c093b | 1671 | power_index = iwl3945_hw_reg_fix_power_index(power_index); |
b481de9c ZY |
1672 | |
1673 | scan_power_info->power_table_index = power_index; | |
1674 | scan_power_info->tpc.tx_gain = | |
1675 | power_gain_table[band_index][power_index].tx_gain; | |
1676 | scan_power_info->tpc.dsp_atten = | |
1677 | power_gain_table[band_index][power_index].dsp_atten; | |
1678 | } | |
1679 | ||
1680 | /** | |
bb8c093b | 1681 | * iwl3945_hw_reg_send_txpower - fill in Tx Power command with gain settings |
b481de9c ZY |
1682 | * |
1683 | * Configures power settings for all rates for the current channel, | |
1684 | * using values from channel info struct, and send to NIC | |
1685 | */ | |
bb8c093b | 1686 | int iwl3945_hw_reg_send_txpower(struct iwl3945_priv *priv) |
b481de9c | 1687 | { |
14577f23 | 1688 | int rate_idx, i; |
bb8c093b CH |
1689 | const struct iwl3945_channel_info *ch_info = NULL; |
1690 | struct iwl3945_txpowertable_cmd txpower = { | |
b481de9c ZY |
1691 | .channel = priv->active_rxon.channel, |
1692 | }; | |
1693 | ||
8318d78a | 1694 | txpower.band = (priv->band == IEEE80211_BAND_5GHZ) ? 0 : 1; |
bb8c093b | 1695 | ch_info = iwl3945_get_channel_info(priv, |
8318d78a | 1696 | priv->band, |
b481de9c ZY |
1697 | le16_to_cpu(priv->active_rxon.channel)); |
1698 | if (!ch_info) { | |
1699 | IWL_ERROR | |
1700 | ("Failed to get channel info for channel %d [%d]\n", | |
8318d78a | 1701 | le16_to_cpu(priv->active_rxon.channel), priv->band); |
b481de9c ZY |
1702 | return -EINVAL; |
1703 | } | |
1704 | ||
1705 | if (!is_channel_valid(ch_info)) { | |
1706 | IWL_DEBUG_POWER("Not calling TX_PWR_TABLE_CMD on " | |
1707 | "non-Tx channel.\n"); | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | /* fill cmd with power settings for all rates for current channel */ | |
14577f23 MA |
1712 | /* Fill OFDM rate */ |
1713 | for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0; | |
1714 | rate_idx <= IWL_LAST_OFDM_RATE; rate_idx++, i++) { | |
1715 | ||
1716 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1717 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
b481de9c ZY |
1718 | |
1719 | IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", | |
1720 | le16_to_cpu(txpower.channel), | |
1721 | txpower.band, | |
14577f23 MA |
1722 | txpower.power[i].tpc.tx_gain, |
1723 | txpower.power[i].tpc.dsp_atten, | |
1724 | txpower.power[i].rate); | |
1725 | } | |
1726 | /* Fill CCK rates */ | |
1727 | for (rate_idx = IWL_FIRST_CCK_RATE; | |
1728 | rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) { | |
1729 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1730 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
14577f23 MA |
1731 | |
1732 | IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", | |
1733 | le16_to_cpu(txpower.channel), | |
1734 | txpower.band, | |
1735 | txpower.power[i].tpc.tx_gain, | |
1736 | txpower.power[i].tpc.dsp_atten, | |
1737 | txpower.power[i].rate); | |
b481de9c ZY |
1738 | } |
1739 | ||
bb8c093b CH |
1740 | return iwl3945_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, |
1741 | sizeof(struct iwl3945_txpowertable_cmd), &txpower); | |
b481de9c ZY |
1742 | |
1743 | } | |
1744 | ||
1745 | /** | |
bb8c093b | 1746 | * iwl3945_hw_reg_set_new_power - Configures power tables at new levels |
b481de9c ZY |
1747 | * @ch_info: Channel to update. Uses power_info.requested_power. |
1748 | * | |
1749 | * Replace requested_power and base_power_index ch_info fields for | |
1750 | * one channel. | |
1751 | * | |
1752 | * Called if user or spectrum management changes power preferences. | |
1753 | * Takes into account h/w and modulation limitations (clip power). | |
1754 | * | |
1755 | * This does *not* send anything to NIC, just sets up ch_info for one channel. | |
1756 | * | |
1757 | * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to | |
1758 | * properly fill out the scan powers, and actual h/w gain settings, | |
1759 | * and send changes to NIC | |
1760 | */ | |
bb8c093b CH |
1761 | static int iwl3945_hw_reg_set_new_power(struct iwl3945_priv *priv, |
1762 | struct iwl3945_channel_info *ch_info) | |
b481de9c | 1763 | { |
bb8c093b | 1764 | struct iwl3945_channel_power_info *power_info; |
b481de9c ZY |
1765 | int power_changed = 0; |
1766 | int i; | |
1767 | const s8 *clip_pwrs; | |
1768 | int power; | |
1769 | ||
1770 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
1771 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
1772 | ||
1773 | /* Get this channel's rate-to-current-power settings table */ | |
1774 | power_info = ch_info->power_info; | |
1775 | ||
1776 | /* update OFDM Txpower settings */ | |
14577f23 | 1777 | for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; |
b481de9c ZY |
1778 | i++, ++power_info) { |
1779 | int delta_idx; | |
1780 | ||
1781 | /* limit new power to be no more than h/w capability */ | |
1782 | power = min(ch_info->curr_txpow, clip_pwrs[i]); | |
1783 | if (power == power_info->requested_power) | |
1784 | continue; | |
1785 | ||
1786 | /* find difference between old and new requested powers, | |
1787 | * update base (non-temp-compensated) power index */ | |
1788 | delta_idx = (power - power_info->requested_power) * 2; | |
1789 | power_info->base_power_index -= delta_idx; | |
1790 | ||
1791 | /* save new requested power value */ | |
1792 | power_info->requested_power = power; | |
1793 | ||
1794 | power_changed = 1; | |
1795 | } | |
1796 | ||
1797 | /* update CCK Txpower settings, based on OFDM 12M setting ... | |
1798 | * ... all CCK power settings for a given channel are the *same*. */ | |
1799 | if (power_changed) { | |
1800 | power = | |
14577f23 | 1801 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1802 | requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF; |
1803 | ||
bb8c093b | 1804 | /* do all CCK rates' iwl3945_channel_power_info structures */ |
14577f23 | 1805 | for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) { |
b481de9c ZY |
1806 | power_info->requested_power = power; |
1807 | power_info->base_power_index = | |
14577f23 | 1808 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1809 | base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF; |
1810 | ++power_info; | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | /** | |
bb8c093b | 1818 | * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel |
b481de9c ZY |
1819 | * |
1820 | * NOTE: Returned power limit may be less (but not more) than requested, | |
1821 | * based strictly on regulatory (eeprom and spectrum mgt) limitations | |
1822 | * (no consideration for h/w clipping limitations). | |
1823 | */ | |
bb8c093b | 1824 | static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl3945_channel_info *ch_info) |
b481de9c ZY |
1825 | { |
1826 | s8 max_power; | |
1827 | ||
1828 | #if 0 | |
1829 | /* if we're using TGd limits, use lower of TGd or EEPROM */ | |
1830 | if (ch_info->tgd_data.max_power != 0) | |
1831 | max_power = min(ch_info->tgd_data.max_power, | |
1832 | ch_info->eeprom.max_power_avg); | |
1833 | ||
1834 | /* else just use EEPROM limits */ | |
1835 | else | |
1836 | #endif | |
1837 | max_power = ch_info->eeprom.max_power_avg; | |
1838 | ||
1839 | return min(max_power, ch_info->max_power_avg); | |
1840 | } | |
1841 | ||
1842 | /** | |
bb8c093b | 1843 | * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature |
b481de9c ZY |
1844 | * |
1845 | * Compensate txpower settings of *all* channels for temperature. | |
1846 | * This only accounts for the difference between current temperature | |
1847 | * and the factory calibration temperatures, and bases the new settings | |
1848 | * on the channel's base_power_index. | |
1849 | * | |
1850 | * If RxOn is "associated", this sends the new Txpower to NIC! | |
1851 | */ | |
bb8c093b | 1852 | static int iwl3945_hw_reg_comp_txpower_temp(struct iwl3945_priv *priv) |
b481de9c | 1853 | { |
bb8c093b | 1854 | struct iwl3945_channel_info *ch_info = NULL; |
b481de9c ZY |
1855 | int delta_index; |
1856 | const s8 *clip_pwrs; /* array of h/w max power levels for each rate */ | |
1857 | u8 a_band; | |
1858 | u8 rate_index; | |
1859 | u8 scan_tbl_index; | |
1860 | u8 i; | |
1861 | int ref_temp; | |
1862 | int temperature = priv->temperature; | |
1863 | ||
1864 | /* set up new Tx power info for each and every channel, 2.4 and 5.x */ | |
1865 | for (i = 0; i < priv->channel_count; i++) { | |
1866 | ch_info = &priv->channel_info[i]; | |
1867 | a_band = is_channel_a_band(ch_info); | |
1868 | ||
1869 | /* Get this chnlgrp's factory calibration temperature */ | |
1870 | ref_temp = (s16)priv->eeprom.groups[ch_info->group_index]. | |
1871 | temperature; | |
1872 | ||
a96a27f9 | 1873 | /* get power index adjustment based on current and factory |
b481de9c | 1874 | * temps */ |
bb8c093b | 1875 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
b481de9c ZY |
1876 | ref_temp); |
1877 | ||
1878 | /* set tx power value for all rates, OFDM and CCK */ | |
1879 | for (rate_index = 0; rate_index < IWL_RATE_COUNT; | |
1880 | rate_index++) { | |
1881 | int power_idx = | |
1882 | ch_info->power_info[rate_index].base_power_index; | |
1883 | ||
1884 | /* temperature compensate */ | |
1885 | power_idx += delta_index; | |
1886 | ||
1887 | /* stay within table range */ | |
bb8c093b | 1888 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c ZY |
1889 | ch_info->power_info[rate_index]. |
1890 | power_table_index = (u8) power_idx; | |
1891 | ch_info->power_info[rate_index].tpc = | |
1892 | power_gain_table[a_band][power_idx]; | |
1893 | } | |
1894 | ||
1895 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
1896 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
1897 | ||
1898 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
1899 | for (scan_tbl_index = 0; | |
1900 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
1901 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 1902 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 1903 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
1904 | actual_index, clip_pwrs, |
1905 | ch_info, a_band); | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | /* send Txpower command for current channel to ucode */ | |
bb8c093b | 1910 | return iwl3945_hw_reg_send_txpower(priv); |
b481de9c ZY |
1911 | } |
1912 | ||
bb8c093b | 1913 | int iwl3945_hw_reg_set_txpower(struct iwl3945_priv *priv, s8 power) |
b481de9c | 1914 | { |
bb8c093b | 1915 | struct iwl3945_channel_info *ch_info; |
b481de9c ZY |
1916 | s8 max_power; |
1917 | u8 a_band; | |
1918 | u8 i; | |
1919 | ||
1920 | if (priv->user_txpower_limit == power) { | |
1921 | IWL_DEBUG_POWER("Requested Tx power same as current " | |
1922 | "limit: %ddBm.\n", power); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
1926 | IWL_DEBUG_POWER("Setting upper limit clamp to %ddBm.\n", power); | |
1927 | priv->user_txpower_limit = power; | |
1928 | ||
1929 | /* set up new Tx powers for each and every channel, 2.4 and 5.x */ | |
1930 | ||
1931 | for (i = 0; i < priv->channel_count; i++) { | |
1932 | ch_info = &priv->channel_info[i]; | |
1933 | a_band = is_channel_a_band(ch_info); | |
1934 | ||
1935 | /* find minimum power of all user and regulatory constraints | |
1936 | * (does not consider h/w clipping limitations) */ | |
bb8c093b | 1937 | max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info); |
b481de9c ZY |
1938 | max_power = min(power, max_power); |
1939 | if (max_power != ch_info->curr_txpow) { | |
1940 | ch_info->curr_txpow = max_power; | |
1941 | ||
1942 | /* this considers the h/w clipping limitations */ | |
bb8c093b | 1943 | iwl3945_hw_reg_set_new_power(priv, ch_info); |
b481de9c ZY |
1944 | } |
1945 | } | |
1946 | ||
1947 | /* update txpower settings for all channels, | |
1948 | * send to NIC if associated. */ | |
1949 | is_temp_calib_needed(priv); | |
bb8c093b | 1950 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
1951 | |
1952 | return 0; | |
1953 | } | |
1954 | ||
1955 | /* will add 3945 channel switch cmd handling later */ | |
bb8c093b | 1956 | int iwl3945_hw_channel_switch(struct iwl3945_priv *priv, u16 channel) |
b481de9c ZY |
1957 | { |
1958 | return 0; | |
1959 | } | |
1960 | ||
1961 | /** | |
1962 | * iwl3945_reg_txpower_periodic - called when time to check our temperature. | |
1963 | * | |
1964 | * -- reset periodic timer | |
1965 | * -- see if temp has changed enough to warrant re-calibration ... if so: | |
1966 | * -- correct coeffs for temp (can reset temp timer) | |
1967 | * -- save this temp as "last", | |
1968 | * -- send new set of gain settings to NIC | |
1969 | * NOTE: This should continue working, even when we're not associated, | |
1970 | * so we can keep our internal table of scan powers current. */ | |
bb8c093b | 1971 | void iwl3945_reg_txpower_periodic(struct iwl3945_priv *priv) |
b481de9c ZY |
1972 | { |
1973 | /* This will kick in the "brute force" | |
bb8c093b | 1974 | * iwl3945_hw_reg_comp_txpower_temp() below */ |
b481de9c ZY |
1975 | if (!is_temp_calib_needed(priv)) |
1976 | goto reschedule; | |
1977 | ||
1978 | /* Set up a new set of temp-adjusted TxPowers, send to NIC. | |
1979 | * This is based *only* on current temperature, | |
1980 | * ignoring any previous power measurements */ | |
bb8c093b | 1981 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
1982 | |
1983 | reschedule: | |
1984 | queue_delayed_work(priv->workqueue, | |
1985 | &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ); | |
1986 | } | |
1987 | ||
416e1438 | 1988 | static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work) |
b481de9c | 1989 | { |
bb8c093b | 1990 | struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, |
b481de9c ZY |
1991 | thermal_periodic.work); |
1992 | ||
1993 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1994 | return; | |
1995 | ||
1996 | mutex_lock(&priv->mutex); | |
1997 | iwl3945_reg_txpower_periodic(priv); | |
1998 | mutex_unlock(&priv->mutex); | |
1999 | } | |
2000 | ||
2001 | /** | |
bb8c093b | 2002 | * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4) |
b481de9c ZY |
2003 | * for the channel. |
2004 | * | |
2005 | * This function is used when initializing channel-info structs. | |
2006 | * | |
2007 | * NOTE: These channel groups do *NOT* match the bands above! | |
2008 | * These channel groups are based on factory-tested channels; | |
2009 | * on A-band, EEPROM's "group frequency" entries represent the top | |
2010 | * channel in each group 1-4. Group 5 All B/G channels are in group 0. | |
2011 | */ | |
bb8c093b CH |
2012 | static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl3945_priv *priv, |
2013 | const struct iwl3945_channel_info *ch_info) | |
b481de9c | 2014 | { |
bb8c093b | 2015 | struct iwl3945_eeprom_txpower_group *ch_grp = &priv->eeprom.groups[0]; |
b481de9c ZY |
2016 | u8 group; |
2017 | u16 group_index = 0; /* based on factory calib frequencies */ | |
2018 | u8 grp_channel; | |
2019 | ||
2020 | /* Find the group index for the channel ... don't use index 1(?) */ | |
2021 | if (is_channel_a_band(ch_info)) { | |
2022 | for (group = 1; group < 5; group++) { | |
2023 | grp_channel = ch_grp[group].group_channel; | |
2024 | if (ch_info->channel <= grp_channel) { | |
2025 | group_index = group; | |
2026 | break; | |
2027 | } | |
2028 | } | |
2029 | /* group 4 has a few channels *above* its factory cal freq */ | |
2030 | if (group == 5) | |
2031 | group_index = 4; | |
2032 | } else | |
2033 | group_index = 0; /* 2.4 GHz, group 0 */ | |
2034 | ||
2035 | IWL_DEBUG_POWER("Chnl %d mapped to grp %d\n", ch_info->channel, | |
2036 | group_index); | |
2037 | return group_index; | |
2038 | } | |
2039 | ||
2040 | /** | |
bb8c093b | 2041 | * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index |
b481de9c ZY |
2042 | * |
2043 | * Interpolate to get nominal (i.e. at factory calibration temperature) index | |
2044 | * into radio/DSP gain settings table for requested power. | |
2045 | */ | |
bb8c093b | 2046 | static int iwl3945_hw_reg_get_matched_power_index(struct iwl3945_priv *priv, |
b481de9c ZY |
2047 | s8 requested_power, |
2048 | s32 setting_index, s32 *new_index) | |
2049 | { | |
bb8c093b | 2050 | const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL; |
b481de9c ZY |
2051 | s32 index0, index1; |
2052 | s32 power = 2 * requested_power; | |
2053 | s32 i; | |
bb8c093b | 2054 | const struct iwl3945_eeprom_txpower_sample *samples; |
b481de9c ZY |
2055 | s32 gains0, gains1; |
2056 | s32 res; | |
2057 | s32 denominator; | |
2058 | ||
2059 | chnl_grp = &priv->eeprom.groups[setting_index]; | |
2060 | samples = chnl_grp->samples; | |
2061 | for (i = 0; i < 5; i++) { | |
2062 | if (power == samples[i].power) { | |
2063 | *new_index = samples[i].gain_index; | |
2064 | return 0; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | if (power > samples[1].power) { | |
2069 | index0 = 0; | |
2070 | index1 = 1; | |
2071 | } else if (power > samples[2].power) { | |
2072 | index0 = 1; | |
2073 | index1 = 2; | |
2074 | } else if (power > samples[3].power) { | |
2075 | index0 = 2; | |
2076 | index1 = 3; | |
2077 | } else { | |
2078 | index0 = 3; | |
2079 | index1 = 4; | |
2080 | } | |
2081 | ||
2082 | denominator = (s32) samples[index1].power - (s32) samples[index0].power; | |
2083 | if (denominator == 0) | |
2084 | return -EINVAL; | |
2085 | gains0 = (s32) samples[index0].gain_index * (1 << 19); | |
2086 | gains1 = (s32) samples[index1].gain_index * (1 << 19); | |
2087 | res = gains0 + (gains1 - gains0) * | |
2088 | ((s32) power - (s32) samples[index0].power) / denominator + | |
2089 | (1 << 18); | |
2090 | *new_index = res >> 19; | |
2091 | return 0; | |
2092 | } | |
2093 | ||
bb8c093b | 2094 | static void iwl3945_hw_reg_init_channel_groups(struct iwl3945_priv *priv) |
b481de9c ZY |
2095 | { |
2096 | u32 i; | |
2097 | s32 rate_index; | |
bb8c093b | 2098 | const struct iwl3945_eeprom_txpower_group *group; |
b481de9c ZY |
2099 | |
2100 | IWL_DEBUG_POWER("Initializing factory calib info from EEPROM\n"); | |
2101 | ||
2102 | for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) { | |
2103 | s8 *clip_pwrs; /* table of power levels for each rate */ | |
2104 | s8 satur_pwr; /* saturation power for each chnl group */ | |
2105 | group = &priv->eeprom.groups[i]; | |
2106 | ||
2107 | /* sanity check on factory saturation power value */ | |
2108 | if (group->saturation_power < 40) { | |
2109 | IWL_WARNING("Error: saturation power is %d, " | |
2110 | "less than minimum expected 40\n", | |
2111 | group->saturation_power); | |
2112 | return; | |
2113 | } | |
2114 | ||
2115 | /* | |
2116 | * Derive requested power levels for each rate, based on | |
2117 | * hardware capabilities (saturation power for band). | |
2118 | * Basic value is 3dB down from saturation, with further | |
2119 | * power reductions for highest 3 data rates. These | |
2120 | * backoffs provide headroom for high rate modulation | |
2121 | * power peaks, without too much distortion (clipping). | |
2122 | */ | |
2123 | /* we'll fill in this array with h/w max power levels */ | |
2124 | clip_pwrs = (s8 *) priv->clip_groups[i].clip_powers; | |
2125 | ||
2126 | /* divide factory saturation power by 2 to find -3dB level */ | |
2127 | satur_pwr = (s8) (group->saturation_power >> 1); | |
2128 | ||
2129 | /* fill in channel group's nominal powers for each rate */ | |
2130 | for (rate_index = 0; | |
2131 | rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) { | |
2132 | switch (rate_index) { | |
14577f23 | 2133 | case IWL_RATE_36M_INDEX_TABLE: |
b481de9c ZY |
2134 | if (i == 0) /* B/G */ |
2135 | *clip_pwrs = satur_pwr; | |
2136 | else /* A */ | |
2137 | *clip_pwrs = satur_pwr - 5; | |
2138 | break; | |
14577f23 | 2139 | case IWL_RATE_48M_INDEX_TABLE: |
b481de9c ZY |
2140 | if (i == 0) |
2141 | *clip_pwrs = satur_pwr - 7; | |
2142 | else | |
2143 | *clip_pwrs = satur_pwr - 10; | |
2144 | break; | |
14577f23 | 2145 | case IWL_RATE_54M_INDEX_TABLE: |
b481de9c ZY |
2146 | if (i == 0) |
2147 | *clip_pwrs = satur_pwr - 9; | |
2148 | else | |
2149 | *clip_pwrs = satur_pwr - 12; | |
2150 | break; | |
2151 | default: | |
2152 | *clip_pwrs = satur_pwr; | |
2153 | break; | |
2154 | } | |
2155 | } | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | /** | |
2160 | * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM | |
2161 | * | |
2162 | * Second pass (during init) to set up priv->channel_info | |
2163 | * | |
2164 | * Set up Tx-power settings in our channel info database for each VALID | |
2165 | * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values | |
2166 | * and current temperature. | |
2167 | * | |
2168 | * Since this is based on current temperature (at init time), these values may | |
2169 | * not be valid for very long, but it gives us a starting/default point, | |
2170 | * and allows us to active (i.e. using Tx) scan. | |
2171 | * | |
2172 | * This does *not* write values to NIC, just sets up our internal table. | |
2173 | */ | |
bb8c093b | 2174 | int iwl3945_txpower_set_from_eeprom(struct iwl3945_priv *priv) |
b481de9c | 2175 | { |
bb8c093b CH |
2176 | struct iwl3945_channel_info *ch_info = NULL; |
2177 | struct iwl3945_channel_power_info *pwr_info; | |
b481de9c ZY |
2178 | int delta_index; |
2179 | u8 rate_index; | |
2180 | u8 scan_tbl_index; | |
2181 | const s8 *clip_pwrs; /* array of power levels for each rate */ | |
2182 | u8 gain, dsp_atten; | |
2183 | s8 power; | |
2184 | u8 pwr_index, base_pwr_index, a_band; | |
2185 | u8 i; | |
2186 | int temperature; | |
2187 | ||
2188 | /* save temperature reference, | |
2189 | * so we can determine next time to calibrate */ | |
bb8c093b | 2190 | temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
2191 | priv->last_temperature = temperature; |
2192 | ||
bb8c093b | 2193 | iwl3945_hw_reg_init_channel_groups(priv); |
b481de9c ZY |
2194 | |
2195 | /* initialize Tx power info for each and every channel, 2.4 and 5.x */ | |
2196 | for (i = 0, ch_info = priv->channel_info; i < priv->channel_count; | |
2197 | i++, ch_info++) { | |
2198 | a_band = is_channel_a_band(ch_info); | |
2199 | if (!is_channel_valid(ch_info)) | |
2200 | continue; | |
2201 | ||
2202 | /* find this channel's channel group (*not* "band") index */ | |
2203 | ch_info->group_index = | |
bb8c093b | 2204 | iwl3945_hw_reg_get_ch_grp_index(priv, ch_info); |
b481de9c ZY |
2205 | |
2206 | /* Get this chnlgrp's rate->max/clip-powers table */ | |
2207 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
2208 | ||
2209 | /* calculate power index *adjustment* value according to | |
2210 | * diff between current temperature and factory temperature */ | |
bb8c093b | 2211 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
b481de9c ZY |
2212 | priv->eeprom.groups[ch_info->group_index]. |
2213 | temperature); | |
2214 | ||
2215 | IWL_DEBUG_POWER("Delta index for channel %d: %d [%d]\n", | |
2216 | ch_info->channel, delta_index, temperature + | |
2217 | IWL_TEMP_CONVERT); | |
2218 | ||
2219 | /* set tx power value for all OFDM rates */ | |
2220 | for (rate_index = 0; rate_index < IWL_OFDM_RATES; | |
2221 | rate_index++) { | |
25a4ccea | 2222 | s32 uninitialized_var(power_idx); |
b481de9c ZY |
2223 | int rc; |
2224 | ||
2225 | /* use channel group's clip-power table, | |
2226 | * but don't exceed channel's max power */ | |
2227 | s8 pwr = min(ch_info->max_power_avg, | |
2228 | clip_pwrs[rate_index]); | |
2229 | ||
2230 | pwr_info = &ch_info->power_info[rate_index]; | |
2231 | ||
2232 | /* get base (i.e. at factory-measured temperature) | |
2233 | * power table index for this rate's power */ | |
bb8c093b | 2234 | rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr, |
b481de9c ZY |
2235 | ch_info->group_index, |
2236 | &power_idx); | |
2237 | if (rc) { | |
2238 | IWL_ERROR("Invalid power index\n"); | |
2239 | return rc; | |
2240 | } | |
2241 | pwr_info->base_power_index = (u8) power_idx; | |
2242 | ||
2243 | /* temperature compensate */ | |
2244 | power_idx += delta_index; | |
2245 | ||
2246 | /* stay within range of gain table */ | |
bb8c093b | 2247 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c | 2248 | |
bb8c093b | 2249 | /* fill 1 OFDM rate's iwl3945_channel_power_info struct */ |
b481de9c ZY |
2250 | pwr_info->requested_power = pwr; |
2251 | pwr_info->power_table_index = (u8) power_idx; | |
2252 | pwr_info->tpc.tx_gain = | |
2253 | power_gain_table[a_band][power_idx].tx_gain; | |
2254 | pwr_info->tpc.dsp_atten = | |
2255 | power_gain_table[a_band][power_idx].dsp_atten; | |
2256 | } | |
2257 | ||
2258 | /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/ | |
14577f23 | 2259 | pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]; |
b481de9c ZY |
2260 | power = pwr_info->requested_power + |
2261 | IWL_CCK_FROM_OFDM_POWER_DIFF; | |
2262 | pwr_index = pwr_info->power_table_index + | |
2263 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2264 | base_pwr_index = pwr_info->base_power_index + | |
2265 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2266 | ||
2267 | /* stay within table range */ | |
bb8c093b | 2268 | pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index); |
b481de9c ZY |
2269 | gain = power_gain_table[a_band][pwr_index].tx_gain; |
2270 | dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten; | |
2271 | ||
bb8c093b | 2272 | /* fill each CCK rate's iwl3945_channel_power_info structure |
b481de9c ZY |
2273 | * NOTE: All CCK-rate Txpwrs are the same for a given chnl! |
2274 | * NOTE: CCK rates start at end of OFDM rates! */ | |
14577f23 MA |
2275 | for (rate_index = 0; |
2276 | rate_index < IWL_CCK_RATES; rate_index++) { | |
2277 | pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES]; | |
b481de9c ZY |
2278 | pwr_info->requested_power = power; |
2279 | pwr_info->power_table_index = pwr_index; | |
2280 | pwr_info->base_power_index = base_pwr_index; | |
2281 | pwr_info->tpc.tx_gain = gain; | |
2282 | pwr_info->tpc.dsp_atten = dsp_atten; | |
2283 | } | |
2284 | ||
2285 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
2286 | for (scan_tbl_index = 0; | |
2287 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
2288 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 2289 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 2290 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
2291 | actual_index, clip_pwrs, ch_info, a_band); |
2292 | } | |
2293 | } | |
2294 | ||
2295 | return 0; | |
2296 | } | |
2297 | ||
bb8c093b | 2298 | int iwl3945_hw_rxq_stop(struct iwl3945_priv *priv) |
b481de9c ZY |
2299 | { |
2300 | int rc; | |
2301 | unsigned long flags; | |
2302 | ||
2303 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 2304 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
2305 | if (rc) { |
2306 | spin_unlock_irqrestore(&priv->lock, flags); | |
2307 | return rc; | |
2308 | } | |
2309 | ||
bb8c093b | 2310 | iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), 0); |
73d7b5ac ZY |
2311 | rc = iwl3945_poll_direct_bit(priv, FH_RSSR_STATUS, |
2312 | FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); | |
b481de9c ZY |
2313 | if (rc < 0) |
2314 | IWL_ERROR("Can't stop Rx DMA.\n"); | |
2315 | ||
bb8c093b | 2316 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
2317 | spin_unlock_irqrestore(&priv->lock, flags); |
2318 | ||
2319 | return 0; | |
2320 | } | |
2321 | ||
bb8c093b | 2322 | int iwl3945_hw_tx_queue_init(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq) |
b481de9c ZY |
2323 | { |
2324 | int rc; | |
2325 | unsigned long flags; | |
2326 | int txq_id = txq->q.id; | |
2327 | ||
bb8c093b | 2328 | struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
2329 | |
2330 | shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr); | |
2331 | ||
2332 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 2333 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
2334 | if (rc) { |
2335 | spin_unlock_irqrestore(&priv->lock, flags); | |
2336 | return rc; | |
2337 | } | |
bb8c093b CH |
2338 | iwl3945_write_direct32(priv, FH_CBCC_CTRL(txq_id), 0); |
2339 | iwl3945_write_direct32(priv, FH_CBCC_BASE(txq_id), 0); | |
b481de9c | 2340 | |
bb8c093b | 2341 | iwl3945_write_direct32(priv, FH_TCSR_CONFIG(txq_id), |
b481de9c ZY |
2342 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT | |
2343 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF | | |
2344 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD | | |
2345 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL | | |
2346 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE); | |
bb8c093b | 2347 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
2348 | |
2349 | /* fake read to flush all prev. writes */ | |
bb8c093b | 2350 | iwl3945_read32(priv, FH_TSSR_CBB_BASE); |
b481de9c ZY |
2351 | spin_unlock_irqrestore(&priv->lock, flags); |
2352 | ||
2353 | return 0; | |
2354 | } | |
2355 | ||
bb8c093b | 2356 | int iwl3945_hw_get_rx_read(struct iwl3945_priv *priv) |
b481de9c | 2357 | { |
bb8c093b | 2358 | struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
2359 | |
2360 | return le32_to_cpu(shared_data->rx_read_ptr[0]); | |
2361 | } | |
2362 | ||
2363 | /** | |
2364 | * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table | |
2365 | */ | |
bb8c093b | 2366 | int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv) |
b481de9c | 2367 | { |
14577f23 | 2368 | int rc, i, index, prev_index; |
bb8c093b | 2369 | struct iwl3945_rate_scaling_cmd rate_cmd = { |
b481de9c ZY |
2370 | .reserved = {0, 0, 0}, |
2371 | }; | |
bb8c093b | 2372 | struct iwl3945_rate_scaling_info *table = rate_cmd.table; |
b481de9c | 2373 | |
bb8c093b CH |
2374 | for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) { |
2375 | index = iwl3945_rates[i].table_rs_index; | |
14577f23 MA |
2376 | |
2377 | table[index].rate_n_flags = | |
bb8c093b | 2378 | iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0); |
14577f23 | 2379 | table[index].try_cnt = priv->retry_rate; |
bb8c093b | 2380 | prev_index = iwl3945_get_prev_ieee_rate(i); |
7262796a AM |
2381 | table[index].next_rate_index = |
2382 | iwl3945_rates[prev_index].table_rs_index; | |
b481de9c ZY |
2383 | } |
2384 | ||
8318d78a JB |
2385 | switch (priv->band) { |
2386 | case IEEE80211_BAND_5GHZ: | |
b481de9c ZY |
2387 | IWL_DEBUG_RATE("Select A mode rate scale\n"); |
2388 | /* If one of the following CCK rates is used, | |
2389 | * have it fall back to the 6M OFDM rate */ | |
7262796a AM |
2390 | for (i = IWL_RATE_1M_INDEX_TABLE; |
2391 | i <= IWL_RATE_11M_INDEX_TABLE; i++) | |
2392 | table[i].next_rate_index = | |
2393 | iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; | |
b481de9c ZY |
2394 | |
2395 | /* Don't fall back to CCK rates */ | |
7262796a AM |
2396 | table[IWL_RATE_12M_INDEX_TABLE].next_rate_index = |
2397 | IWL_RATE_9M_INDEX_TABLE; | |
b481de9c ZY |
2398 | |
2399 | /* Don't drop out of OFDM rates */ | |
14577f23 | 2400 | table[IWL_RATE_6M_INDEX_TABLE].next_rate_index = |
bb8c093b | 2401 | iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; |
b481de9c ZY |
2402 | break; |
2403 | ||
8318d78a JB |
2404 | case IEEE80211_BAND_2GHZ: |
2405 | IWL_DEBUG_RATE("Select B/G mode rate scale\n"); | |
b481de9c ZY |
2406 | /* If an OFDM rate is used, have it fall back to the |
2407 | * 1M CCK rates */ | |
b481de9c | 2408 | |
7262796a AM |
2409 | if (!(priv->sta_supp_rates & IWL_OFDM_RATES_MASK) && |
2410 | iwl3945_is_associated(priv)) { | |
2411 | ||
2412 | index = IWL_FIRST_CCK_RATE; | |
2413 | for (i = IWL_RATE_6M_INDEX_TABLE; | |
2414 | i <= IWL_RATE_54M_INDEX_TABLE; i++) | |
2415 | table[i].next_rate_index = | |
2416 | iwl3945_rates[index].table_rs_index; | |
2417 | ||
2418 | index = IWL_RATE_11M_INDEX_TABLE; | |
2419 | /* CCK shouldn't fall back to OFDM... */ | |
2420 | table[index].next_rate_index = IWL_RATE_5M_INDEX_TABLE; | |
2421 | } | |
b481de9c ZY |
2422 | break; |
2423 | ||
2424 | default: | |
8318d78a | 2425 | WARN_ON(1); |
b481de9c ZY |
2426 | break; |
2427 | } | |
2428 | ||
2429 | /* Update the rate scaling for control frame Tx */ | |
2430 | rate_cmd.table_id = 0; | |
bb8c093b | 2431 | rc = iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2432 | &rate_cmd); |
2433 | if (rc) | |
2434 | return rc; | |
2435 | ||
2436 | /* Update the rate scaling for data frame Tx */ | |
2437 | rate_cmd.table_id = 1; | |
bb8c093b | 2438 | return iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2439 | &rate_cmd); |
2440 | } | |
2441 | ||
796083cb | 2442 | /* Called when initializing driver */ |
bb8c093b | 2443 | int iwl3945_hw_set_hw_setting(struct iwl3945_priv *priv) |
b481de9c ZY |
2444 | { |
2445 | memset((void *)&priv->hw_setting, 0, | |
bb8c093b | 2446 | sizeof(struct iwl3945_driver_hw_info)); |
b481de9c ZY |
2447 | |
2448 | priv->hw_setting.shared_virt = | |
2449 | pci_alloc_consistent(priv->pci_dev, | |
bb8c093b | 2450 | sizeof(struct iwl3945_shared), |
b481de9c ZY |
2451 | &priv->hw_setting.shared_phys); |
2452 | ||
2453 | if (!priv->hw_setting.shared_virt) { | |
2454 | IWL_ERROR("failed to allocate pci memory\n"); | |
2455 | mutex_unlock(&priv->mutex); | |
2456 | return -ENOMEM; | |
2457 | } | |
2458 | ||
9ee1ba47 RR |
2459 | priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE; |
2460 | priv->hw_setting.max_pkt_size = 2342; | |
bb8c093b | 2461 | priv->hw_setting.tx_cmd_len = sizeof(struct iwl3945_tx_cmd); |
b481de9c ZY |
2462 | priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE; |
2463 | priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG; | |
b481de9c ZY |
2464 | priv->hw_setting.max_stations = IWL3945_STATION_COUNT; |
2465 | priv->hw_setting.bcast_sta_id = IWL3945_BROADCAST_ID; | |
3e82a822 TW |
2466 | |
2467 | priv->hw_setting.tx_ant_num = 2; | |
b481de9c ZY |
2468 | return 0; |
2469 | } | |
2470 | ||
bb8c093b CH |
2471 | unsigned int iwl3945_hw_get_beacon_cmd(struct iwl3945_priv *priv, |
2472 | struct iwl3945_frame *frame, u8 rate) | |
b481de9c | 2473 | { |
bb8c093b | 2474 | struct iwl3945_tx_beacon_cmd *tx_beacon_cmd; |
b481de9c ZY |
2475 | unsigned int frame_size; |
2476 | ||
bb8c093b | 2477 | tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u; |
b481de9c ZY |
2478 | memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); |
2479 | ||
a4062b8f | 2480 | tx_beacon_cmd->tx.sta_id = priv->hw_setting.bcast_sta_id; |
b481de9c ZY |
2481 | tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
2482 | ||
bb8c093b | 2483 | frame_size = iwl3945_fill_beacon_frame(priv, |
b481de9c | 2484 | tx_beacon_cmd->frame, |
b481de9c ZY |
2485 | sizeof(frame->u) - sizeof(*tx_beacon_cmd)); |
2486 | ||
2487 | BUG_ON(frame_size > MAX_MPDU_SIZE); | |
2488 | tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); | |
2489 | ||
2490 | tx_beacon_cmd->tx.rate = rate; | |
2491 | tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | | |
2492 | TX_CMD_FLG_TSF_MSK); | |
2493 | ||
14577f23 MA |
2494 | /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/ |
2495 | tx_beacon_cmd->tx.supp_rates[0] = | |
2496 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2497 | ||
b481de9c | 2498 | tx_beacon_cmd->tx.supp_rates[1] = |
14577f23 | 2499 | (IWL_CCK_BASIC_RATES_MASK & 0xF); |
b481de9c | 2500 | |
3ac7f146 | 2501 | return sizeof(struct iwl3945_tx_beacon_cmd) + frame_size; |
b481de9c ZY |
2502 | } |
2503 | ||
bb8c093b | 2504 | void iwl3945_hw_rx_handler_setup(struct iwl3945_priv *priv) |
b481de9c | 2505 | { |
91c066f2 | 2506 | priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx; |
b481de9c ZY |
2507 | priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx; |
2508 | } | |
2509 | ||
bb8c093b | 2510 | void iwl3945_hw_setup_deferred_work(struct iwl3945_priv *priv) |
b481de9c ZY |
2511 | { |
2512 | INIT_DELAYED_WORK(&priv->thermal_periodic, | |
2513 | iwl3945_bg_reg_txpower_periodic); | |
2514 | } | |
2515 | ||
bb8c093b | 2516 | void iwl3945_hw_cancel_deferred_work(struct iwl3945_priv *priv) |
b481de9c ZY |
2517 | { |
2518 | cancel_delayed_work(&priv->thermal_periodic); | |
2519 | } | |
2520 | ||
82b9a121 TW |
2521 | static struct iwl_3945_cfg iwl3945_bg_cfg = { |
2522 | .name = "3945BG", | |
a0987a8d RC |
2523 | .fw_name_pre = IWL3945_FW_PRE, |
2524 | .ucode_api_max = IWL3945_UCODE_API_MAX, | |
2525 | .ucode_api_min = IWL3945_UCODE_API_MIN, | |
82b9a121 TW |
2526 | .sku = IWL_SKU_G, |
2527 | }; | |
2528 | ||
2529 | static struct iwl_3945_cfg iwl3945_abg_cfg = { | |
2530 | .name = "3945ABG", | |
a0987a8d RC |
2531 | .fw_name_pre = IWL3945_FW_PRE, |
2532 | .ucode_api_max = IWL3945_UCODE_API_MAX, | |
2533 | .ucode_api_min = IWL3945_UCODE_API_MIN, | |
82b9a121 TW |
2534 | .sku = IWL_SKU_A|IWL_SKU_G, |
2535 | }; | |
2536 | ||
bb8c093b | 2537 | struct pci_device_id iwl3945_hw_card_ids[] = { |
82b9a121 TW |
2538 | {IWL_PCI_DEVICE(0x4222, 0x1005, iwl3945_bg_cfg)}, |
2539 | {IWL_PCI_DEVICE(0x4222, 0x1034, iwl3945_bg_cfg)}, | |
2540 | {IWL_PCI_DEVICE(0x4222, 0x1044, iwl3945_bg_cfg)}, | |
2541 | {IWL_PCI_DEVICE(0x4227, 0x1014, iwl3945_bg_cfg)}, | |
2542 | {IWL_PCI_DEVICE(0x4222, PCI_ANY_ID, iwl3945_abg_cfg)}, | |
2543 | {IWL_PCI_DEVICE(0x4227, PCI_ANY_ID, iwl3945_abg_cfg)}, | |
b481de9c ZY |
2544 | {0} |
2545 | }; | |
2546 | ||
bb8c093b | 2547 | MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids); |