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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
3 | * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved. | |
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: | |
22 | * James P. Ketrenos <ipw2100-admin@linux.intel.com> | |
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> | |
29 | #include <linux/version.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/dma-mapping.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/wireless.h> | |
37 | #include <linux/firmware.h> | |
b481de9c | 38 | #include <linux/etherdevice.h> |
12342c47 ZY |
39 | #include <asm/unaligned.h> |
40 | #include <net/mac80211.h> | |
b481de9c | 41 | |
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 | ||
186 | /** | |
187 | * iwl3945_get_antenna_flags - Get antenna flags for RXON command | |
188 | * @priv: eeprom and antenna fields are used to determine antenna flags | |
189 | * | |
190 | * priv->eeprom is used to determine if antenna AUX/MAIN are reversed | |
191 | * priv->antenna specifies the antenna diversity mode: | |
192 | * | |
193 | * IWL_ANTENNA_DIVERISTY - NIC selects best antenna by itself | |
194 | * IWL_ANTENNA_MAIN - Force MAIN antenna | |
195 | * IWL_ANTENNA_AUX - Force AUX antenna | |
196 | */ | |
bb8c093b | 197 | __le32 iwl3945_get_antenna_flags(const struct iwl3945_priv *priv) |
b481de9c ZY |
198 | { |
199 | switch (priv->antenna) { | |
200 | case IWL_ANTENNA_DIVERSITY: | |
201 | return 0; | |
202 | ||
203 | case IWL_ANTENNA_MAIN: | |
204 | if (priv->eeprom.antenna_switch_type) | |
205 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
206 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
207 | ||
208 | case IWL_ANTENNA_AUX: | |
209 | if (priv->eeprom.antenna_switch_type) | |
210 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK; | |
211 | return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK; | |
212 | } | |
213 | ||
214 | /* bad antenna selector value */ | |
215 | IWL_ERROR("Bad antenna selector value (0x%x)\n", priv->antenna); | |
216 | return 0; /* "diversity" is default if error */ | |
217 | } | |
218 | ||
219 | /***************************************************************************** | |
220 | * | |
221 | * Intel PRO/Wireless 3945ABG/BG Network Connection | |
222 | * | |
223 | * RX handler implementations | |
224 | * | |
225 | * Used by iwl-base.c | |
226 | * | |
227 | *****************************************************************************/ | |
228 | ||
bb8c093b | 229 | void iwl3945_hw_rx_statistics(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb) |
b481de9c | 230 | { |
bb8c093b | 231 | struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c | 232 | IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n", |
bb8c093b | 233 | (int)sizeof(struct iwl3945_notif_statistics), |
b481de9c ZY |
234 | le32_to_cpu(pkt->len)); |
235 | ||
236 | memcpy(&priv->statistics, pkt->u.raw, sizeof(priv->statistics)); | |
237 | ||
238 | priv->last_statistics_time = jiffies; | |
239 | } | |
240 | ||
12342c47 ZY |
241 | void iwl3945_add_radiotap(struct iwl3945_priv *priv, struct sk_buff *skb, |
242 | struct iwl3945_rx_frame_hdr *rx_hdr, | |
243 | struct ieee80211_rx_status *stats) | |
244 | { | |
245 | /* First cache any information we need before we overwrite | |
246 | * the information provided in the skb from the hardware */ | |
247 | s8 signal = stats->ssi; | |
248 | s8 noise = 0; | |
249 | int rate = stats->rate; | |
250 | u64 tsf = stats->mactime; | |
251 | __le16 phy_flags_hw = rx_hdr->phy_flags; | |
252 | ||
253 | struct iwl3945_rt_rx_hdr { | |
254 | struct ieee80211_radiotap_header rt_hdr; | |
255 | __le64 rt_tsf; /* TSF */ | |
256 | u8 rt_flags; /* radiotap packet flags */ | |
257 | u8 rt_rate; /* rate in 500kb/s */ | |
258 | __le16 rt_channelMHz; /* channel in MHz */ | |
259 | __le16 rt_chbitmask; /* channel bitfield */ | |
260 | s8 rt_dbmsignal; /* signal in dBm, kluged to signed */ | |
261 | s8 rt_dbmnoise; | |
262 | u8 rt_antenna; /* antenna number */ | |
263 | } __attribute__ ((packed)) *iwl3945_rt; | |
264 | ||
265 | if (skb_headroom(skb) < sizeof(*iwl3945_rt)) { | |
266 | if (net_ratelimit()) | |
267 | printk(KERN_ERR "not enough headroom [%d] for " | |
268 | "radiotap head [%d]\n", | |
269 | skb_headroom(skb), sizeof(*iwl3945_rt)); | |
270 | return; | |
271 | } | |
272 | ||
273 | /* put radiotap header in front of 802.11 header and data */ | |
274 | iwl3945_rt = (void *)skb_push(skb, sizeof(*iwl3945_rt)); | |
275 | ||
276 | /* initialise radiotap header */ | |
277 | iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
278 | iwl3945_rt->rt_hdr.it_pad = 0; | |
279 | ||
280 | /* total header + data */ | |
281 | put_unaligned(cpu_to_le16(sizeof(*iwl3945_rt)), | |
282 | &iwl3945_rt->rt_hdr.it_len); | |
283 | ||
284 | /* Indicate all the fields we add to the radiotap header */ | |
285 | put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | | |
286 | (1 << IEEE80211_RADIOTAP_FLAGS) | | |
287 | (1 << IEEE80211_RADIOTAP_RATE) | | |
288 | (1 << IEEE80211_RADIOTAP_CHANNEL) | | |
289 | (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | | |
290 | (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | | |
291 | (1 << IEEE80211_RADIOTAP_ANTENNA)), | |
292 | &iwl3945_rt->rt_hdr.it_present); | |
293 | ||
294 | /* Zero the flags, we'll add to them as we go */ | |
295 | iwl3945_rt->rt_flags = 0; | |
296 | ||
297 | put_unaligned(cpu_to_le64(tsf), &iwl3945_rt->rt_tsf); | |
298 | ||
299 | iwl3945_rt->rt_dbmsignal = signal; | |
300 | iwl3945_rt->rt_dbmnoise = noise; | |
301 | ||
302 | /* Convert the channel frequency and set the flags */ | |
303 | put_unaligned(cpu_to_le16(stats->freq), &iwl3945_rt->rt_channelMHz); | |
304 | if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) | |
305 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | | |
306 | IEEE80211_CHAN_5GHZ), | |
307 | &iwl3945_rt->rt_chbitmask); | |
308 | else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) | |
309 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK | | |
310 | IEEE80211_CHAN_2GHZ), | |
311 | &iwl3945_rt->rt_chbitmask); | |
312 | else /* 802.11g */ | |
313 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | | |
314 | IEEE80211_CHAN_2GHZ), | |
315 | &iwl3945_rt->rt_chbitmask); | |
316 | ||
317 | rate = iwl3945_rate_index_from_plcp(rate); | |
318 | if (rate == -1) | |
319 | iwl3945_rt->rt_rate = 0; | |
320 | else | |
321 | iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee; | |
322 | ||
323 | /* antenna number */ | |
324 | iwl3945_rt->rt_antenna = | |
325 | le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; | |
326 | ||
327 | /* set the preamble flag if we have it */ | |
328 | if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
329 | iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; | |
330 | ||
331 | stats->flag |= RX_FLAG_RADIOTAP; | |
332 | } | |
333 | ||
bb8c093b CH |
334 | static void iwl3945_handle_data_packet(struct iwl3945_priv *priv, int is_data, |
335 | struct iwl3945_rx_mem_buffer *rxb, | |
12342c47 | 336 | struct ieee80211_rx_status *stats) |
b481de9c ZY |
337 | { |
338 | struct ieee80211_hdr *hdr; | |
bb8c093b CH |
339 | struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data; |
340 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
341 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
b481de9c ZY |
342 | short len = le16_to_cpu(rx_hdr->len); |
343 | ||
344 | /* We received data from the HW, so stop the watchdog */ | |
345 | if (unlikely((len + IWL_RX_FRAME_SIZE) > skb_tailroom(rxb->skb))) { | |
346 | IWL_DEBUG_DROP("Corruption detected!\n"); | |
347 | return; | |
348 | } | |
349 | ||
350 | /* We only process data packets if the interface is open */ | |
351 | if (unlikely(!priv->is_open)) { | |
352 | IWL_DEBUG_DROP_LIMIT | |
353 | ("Dropping packet while interface is not open.\n"); | |
354 | return; | |
355 | } | |
b481de9c ZY |
356 | |
357 | skb_reserve(rxb->skb, (void *)rx_hdr->payload - (void *)pkt); | |
358 | /* Set the size of the skb to the size of the frame */ | |
359 | skb_put(rxb->skb, le16_to_cpu(rx_hdr->len)); | |
360 | ||
361 | hdr = (void *)rxb->skb->data; | |
362 | ||
bb8c093b CH |
363 | if (iwl3945_param_hwcrypto) |
364 | iwl3945_set_decrypted_flag(priv, rxb->skb, | |
b481de9c ZY |
365 | le32_to_cpu(rx_end->status), stats); |
366 | ||
12342c47 ZY |
367 | if (priv->add_radiotap) |
368 | iwl3945_add_radiotap(priv, rxb->skb, rx_hdr, stats); | |
369 | ||
b481de9c ZY |
370 | ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); |
371 | rxb->skb = NULL; | |
372 | } | |
373 | ||
7878a5a4 MA |
374 | #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
375 | ||
bb8c093b CH |
376 | static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv, |
377 | struct iwl3945_rx_mem_buffer *rxb) | |
b481de9c | 378 | { |
bb8c093b CH |
379 | struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data; |
380 | struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
381 | struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
382 | struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
b481de9c | 383 | struct ieee80211_hdr *header; |
b481de9c ZY |
384 | u16 rx_stats_sig_avg = le16_to_cpu(rx_stats->sig_avg); |
385 | u16 rx_stats_noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
386 | struct ieee80211_rx_status stats = { | |
387 | .mactime = le64_to_cpu(rx_end->timestamp), | |
388 | .freq = ieee80211chan2mhz(le16_to_cpu(rx_hdr->channel)), | |
389 | .channel = le16_to_cpu(rx_hdr->channel), | |
390 | .phymode = (rx_hdr->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? | |
391 | MODE_IEEE80211G : MODE_IEEE80211A, | |
392 | .antenna = 0, | |
393 | .rate = rx_hdr->rate, | |
394 | .flag = 0, | |
395 | }; | |
396 | u8 network_packet; | |
397 | int snr; | |
398 | ||
399 | if ((unlikely(rx_stats->phy_count > 20))) { | |
400 | IWL_DEBUG_DROP | |
401 | ("dsp size out of range [0,20]: " | |
402 | "%d/n", rx_stats->phy_count); | |
403 | return; | |
404 | } | |
405 | ||
406 | if (!(rx_end->status & RX_RES_STATUS_NO_CRC32_ERROR) | |
407 | || !(rx_end->status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { | |
408 | IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n", rx_end->status); | |
409 | return; | |
410 | } | |
411 | ||
412 | if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) { | |
12342c47 | 413 | iwl3945_handle_data_packet(priv, 1, rxb, &stats); |
b481de9c ZY |
414 | return; |
415 | } | |
416 | ||
417 | /* Convert 3945's rssi indicator to dBm */ | |
418 | stats.ssi = rx_stats->rssi - IWL_RSSI_OFFSET; | |
419 | ||
420 | /* Set default noise value to -127 */ | |
421 | if (priv->last_rx_noise == 0) | |
422 | priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; | |
423 | ||
424 | /* 3945 provides noise info for OFDM frames only. | |
425 | * sig_avg and noise_diff are measured by the 3945's digital signal | |
426 | * processor (DSP), and indicate linear levels of signal level and | |
427 | * distortion/noise within the packet preamble after | |
428 | * automatic gain control (AGC). sig_avg should stay fairly | |
429 | * constant if the radio's AGC is working well. | |
430 | * Since these values are linear (not dB or dBm), linear | |
431 | * signal-to-noise ratio (SNR) is (sig_avg / noise_diff). | |
432 | * Convert linear SNR to dB SNR, then subtract that from rssi dBm | |
433 | * to obtain noise level in dBm. | |
434 | * Calculate stats.signal (quality indicator in %) based on SNR. */ | |
435 | if (rx_stats_noise_diff) { | |
436 | snr = rx_stats_sig_avg / rx_stats_noise_diff; | |
bb8c093b CH |
437 | stats.noise = stats.ssi - iwl3945_calc_db_from_ratio(snr); |
438 | stats.signal = iwl3945_calc_sig_qual(stats.ssi, stats.noise); | |
b481de9c ZY |
439 | |
440 | /* If noise info not available, calculate signal quality indicator (%) | |
441 | * using just the dBm signal level. */ | |
442 | } else { | |
443 | stats.noise = priv->last_rx_noise; | |
bb8c093b | 444 | stats.signal = iwl3945_calc_sig_qual(stats.ssi, 0); |
b481de9c ZY |
445 | } |
446 | ||
447 | ||
448 | IWL_DEBUG_STATS("Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n", | |
449 | stats.ssi, stats.noise, stats.signal, | |
450 | rx_stats_sig_avg, rx_stats_noise_diff); | |
451 | ||
452 | stats.freq = ieee80211chan2mhz(stats.channel); | |
453 | ||
bb8c093b | 454 | /* can be covered by iwl3945_report_frame() in most cases */ |
b481de9c ZY |
455 | /* IWL_DEBUG_RX("RX status: 0x%08X\n", rx_end->status); */ |
456 | ||
457 | header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt); | |
458 | ||
bb8c093b | 459 | network_packet = iwl3945_is_network_packet(priv, header); |
b481de9c | 460 | |
c8b0e6e1 | 461 | #ifdef CONFIG_IWL3945_DEBUG |
bb8c093b | 462 | if (iwl3945_debug_level & IWL_DL_STATS && net_ratelimit()) |
b481de9c ZY |
463 | IWL_DEBUG_STATS |
464 | ("[%c] %d RSSI: %d Signal: %u, Noise: %u, Rate: %u\n", | |
465 | network_packet ? '*' : ' ', | |
466 | stats.channel, stats.ssi, stats.ssi, | |
467 | stats.ssi, stats.rate); | |
468 | ||
bb8c093b | 469 | if (iwl3945_debug_level & (IWL_DL_RX)) |
b481de9c | 470 | /* Set "1" to report good data frames in groups of 100 */ |
bb8c093b | 471 | iwl3945_report_frame(priv, pkt, header, 1); |
b481de9c ZY |
472 | #endif |
473 | ||
474 | if (network_packet) { | |
475 | priv->last_beacon_time = le32_to_cpu(rx_end->beacon_timestamp); | |
476 | priv->last_tsf = le64_to_cpu(rx_end->timestamp); | |
477 | priv->last_rx_rssi = stats.ssi; | |
478 | priv->last_rx_noise = stats.noise; | |
479 | } | |
480 | ||
481 | switch (le16_to_cpu(header->frame_control) & IEEE80211_FCTL_FTYPE) { | |
482 | case IEEE80211_FTYPE_MGMT: | |
483 | switch (le16_to_cpu(header->frame_control) & | |
484 | IEEE80211_FCTL_STYPE) { | |
485 | case IEEE80211_STYPE_PROBE_RESP: | |
486 | case IEEE80211_STYPE_BEACON:{ | |
487 | /* If this is a beacon or probe response for | |
488 | * our network then cache the beacon | |
489 | * timestamp */ | |
490 | if ((((priv->iw_mode == IEEE80211_IF_TYPE_STA) | |
491 | && !compare_ether_addr(header->addr2, | |
492 | priv->bssid)) || | |
493 | ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) | |
494 | && !compare_ether_addr(header->addr3, | |
495 | priv->bssid)))) { | |
496 | struct ieee80211_mgmt *mgmt = | |
497 | (struct ieee80211_mgmt *)header; | |
498 | __le32 *pos; | |
499 | pos = | |
500 | (__le32 *) & mgmt->u.beacon. | |
501 | timestamp; | |
502 | priv->timestamp0 = le32_to_cpu(pos[0]); | |
503 | priv->timestamp1 = le32_to_cpu(pos[1]); | |
504 | priv->beacon_int = le16_to_cpu( | |
505 | mgmt->u.beacon.beacon_int); | |
506 | if (priv->call_post_assoc_from_beacon && | |
507 | (priv->iw_mode == | |
508 | IEEE80211_IF_TYPE_STA)) | |
509 | queue_work(priv->workqueue, | |
510 | &priv->post_associate.work); | |
511 | ||
512 | priv->call_post_assoc_from_beacon = 0; | |
513 | } | |
514 | ||
515 | break; | |
516 | } | |
517 | ||
518 | case IEEE80211_STYPE_ACTION: | |
519 | /* TODO: Parse 802.11h frames for CSA... */ | |
520 | break; | |
521 | ||
522 | /* | |
523 | * TODO: There is no callback function from upper | |
524 | * stack to inform us when associated status. this | |
525 | * work around to sniff assoc_resp management frame | |
526 | * and finish the association process. | |
527 | */ | |
528 | case IEEE80211_STYPE_ASSOC_RESP: | |
529 | case IEEE80211_STYPE_REASSOC_RESP:{ | |
530 | struct ieee80211_mgmt *mgnt = | |
531 | (struct ieee80211_mgmt *)header; | |
7878a5a4 MA |
532 | |
533 | /* We have just associated, give some | |
534 | * time for the 4-way handshake if | |
535 | * any. Don't start scan too early. */ | |
536 | priv->next_scan_jiffies = jiffies + | |
537 | IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; | |
538 | ||
b481de9c ZY |
539 | priv->assoc_id = (~((1 << 15) | (1 << 14)) & |
540 | le16_to_cpu(mgnt->u. | |
541 | assoc_resp.aid)); | |
542 | priv->assoc_capability = | |
543 | le16_to_cpu(mgnt->u.assoc_resp.capab_info); | |
544 | if (priv->beacon_int) | |
545 | queue_work(priv->workqueue, | |
546 | &priv->post_associate.work); | |
547 | else | |
548 | priv->call_post_assoc_from_beacon = 1; | |
549 | break; | |
550 | } | |
551 | ||
552 | case IEEE80211_STYPE_PROBE_REQ:{ | |
0795af57 JP |
553 | DECLARE_MAC_BUF(mac1); |
554 | DECLARE_MAC_BUF(mac2); | |
555 | DECLARE_MAC_BUF(mac3); | |
b481de9c ZY |
556 | if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) |
557 | IWL_DEBUG_DROP | |
0795af57 JP |
558 | ("Dropping (non network): %s" |
559 | ", %s, %s\n", | |
560 | print_mac(mac1, header->addr1), | |
561 | print_mac(mac2, header->addr2), | |
562 | print_mac(mac3, header->addr3)); | |
b481de9c ZY |
563 | return; |
564 | } | |
565 | } | |
566 | ||
12342c47 | 567 | iwl3945_handle_data_packet(priv, 0, rxb, &stats); |
b481de9c ZY |
568 | break; |
569 | ||
570 | case IEEE80211_FTYPE_CTL: | |
571 | break; | |
572 | ||
0795af57 JP |
573 | case IEEE80211_FTYPE_DATA: { |
574 | DECLARE_MAC_BUF(mac1); | |
575 | DECLARE_MAC_BUF(mac2); | |
576 | DECLARE_MAC_BUF(mac3); | |
577 | ||
bb8c093b | 578 | if (unlikely(iwl3945_is_duplicate_packet(priv, header))) |
0795af57 JP |
579 | IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n", |
580 | print_mac(mac1, header->addr1), | |
581 | print_mac(mac2, header->addr2), | |
582 | print_mac(mac3, header->addr3)); | |
b481de9c | 583 | else |
12342c47 | 584 | iwl3945_handle_data_packet(priv, 1, rxb, &stats); |
b481de9c ZY |
585 | break; |
586 | } | |
0795af57 | 587 | } |
b481de9c ZY |
588 | } |
589 | ||
bb8c093b | 590 | int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl3945_priv *priv, void *ptr, |
b481de9c ZY |
591 | dma_addr_t addr, u16 len) |
592 | { | |
593 | int count; | |
594 | u32 pad; | |
bb8c093b | 595 | struct iwl3945_tfd_frame *tfd = (struct iwl3945_tfd_frame *)ptr; |
b481de9c ZY |
596 | |
597 | count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); | |
598 | pad = TFD_CTL_PAD_GET(le32_to_cpu(tfd->control_flags)); | |
599 | ||
600 | if ((count >= NUM_TFD_CHUNKS) || (count < 0)) { | |
601 | IWL_ERROR("Error can not send more than %d chunks\n", | |
602 | NUM_TFD_CHUNKS); | |
603 | return -EINVAL; | |
604 | } | |
605 | ||
606 | tfd->pa[count].addr = cpu_to_le32(addr); | |
607 | tfd->pa[count].len = cpu_to_le32(len); | |
608 | ||
609 | count++; | |
610 | ||
611 | tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(count) | | |
612 | TFD_CTL_PAD_SET(pad)); | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | /** | |
bb8c093b | 618 | * iwl3945_hw_txq_free_tfd - Free one TFD, those at index [txq->q.read_ptr] |
b481de9c ZY |
619 | * |
620 | * Does NOT advance any indexes | |
621 | */ | |
bb8c093b | 622 | int iwl3945_hw_txq_free_tfd(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq) |
b481de9c | 623 | { |
bb8c093b CH |
624 | struct iwl3945_tfd_frame *bd_tmp = (struct iwl3945_tfd_frame *)&txq->bd[0]; |
625 | struct iwl3945_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; | |
b481de9c ZY |
626 | struct pci_dev *dev = priv->pci_dev; |
627 | int i; | |
628 | int counter; | |
629 | ||
630 | /* classify bd */ | |
631 | if (txq->q.id == IWL_CMD_QUEUE_NUM) | |
632 | /* nothing to cleanup after for host commands */ | |
633 | return 0; | |
634 | ||
635 | /* sanity check */ | |
636 | counter = TFD_CTL_COUNT_GET(le32_to_cpu(bd->control_flags)); | |
637 | if (counter > NUM_TFD_CHUNKS) { | |
638 | IWL_ERROR("Too many chunks: %i\n", counter); | |
639 | /* @todo issue fatal error, it is quite serious situation */ | |
640 | return 0; | |
641 | } | |
642 | ||
643 | /* unmap chunks if any */ | |
644 | ||
645 | for (i = 1; i < counter; i++) { | |
646 | pci_unmap_single(dev, le32_to_cpu(bd->pa[i].addr), | |
647 | le32_to_cpu(bd->pa[i].len), PCI_DMA_TODEVICE); | |
fc4b6853 TW |
648 | if (txq->txb[txq->q.read_ptr].skb[0]) { |
649 | struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0]; | |
650 | if (txq->txb[txq->q.read_ptr].skb[0]) { | |
b481de9c ZY |
651 | /* Can be called from interrupt context */ |
652 | dev_kfree_skb_any(skb); | |
fc4b6853 | 653 | txq->txb[txq->q.read_ptr].skb[0] = NULL; |
b481de9c ZY |
654 | } |
655 | } | |
656 | } | |
657 | return 0; | |
658 | } | |
659 | ||
bb8c093b | 660 | u8 iwl3945_hw_find_station(struct iwl3945_priv *priv, const u8 *addr) |
b481de9c ZY |
661 | { |
662 | int i; | |
663 | int ret = IWL_INVALID_STATION; | |
664 | unsigned long flags; | |
0795af57 | 665 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
666 | |
667 | spin_lock_irqsave(&priv->sta_lock, flags); | |
668 | for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) | |
669 | if ((priv->stations[i].used) && | |
670 | (!compare_ether_addr | |
671 | (priv->stations[i].sta.sta.addr, addr))) { | |
672 | ret = i; | |
673 | goto out; | |
674 | } | |
675 | ||
0795af57 JP |
676 | IWL_DEBUG_INFO("can not find STA %s (total %d)\n", |
677 | print_mac(mac, addr), priv->num_stations); | |
b481de9c ZY |
678 | out: |
679 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
680 | return ret; | |
681 | } | |
682 | ||
683 | /** | |
bb8c093b | 684 | * iwl3945_hw_build_tx_cmd_rate - Add rate portion to TX_CMD: |
b481de9c ZY |
685 | * |
686 | */ | |
bb8c093b CH |
687 | void iwl3945_hw_build_tx_cmd_rate(struct iwl3945_priv *priv, |
688 | struct iwl3945_cmd *cmd, | |
b481de9c ZY |
689 | struct ieee80211_tx_control *ctrl, |
690 | struct ieee80211_hdr *hdr, int sta_id, int tx_id) | |
691 | { | |
692 | unsigned long flags; | |
693 | u16 rate_index = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1); | |
694 | u16 rate_mask; | |
695 | int rate; | |
696 | u8 rts_retry_limit; | |
697 | u8 data_retry_limit; | |
698 | __le32 tx_flags; | |
699 | u16 fc = le16_to_cpu(hdr->frame_control); | |
700 | ||
bb8c093b | 701 | rate = iwl3945_rates[rate_index].plcp; |
b481de9c ZY |
702 | tx_flags = cmd->cmd.tx.tx_flags; |
703 | ||
704 | /* We need to figure out how to get the sta->supp_rates while | |
705 | * in this running context; perhaps encoding into ctrl->tx_rate? */ | |
706 | rate_mask = IWL_RATES_MASK; | |
707 | ||
708 | spin_lock_irqsave(&priv->sta_lock, flags); | |
709 | ||
710 | priv->stations[sta_id].current_rate.rate_n_flags = rate; | |
711 | ||
712 | if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && | |
713 | (sta_id != IWL3945_BROADCAST_ID) && | |
714 | (sta_id != IWL_MULTICAST_ID)) | |
715 | priv->stations[IWL_STA_ID].current_rate.rate_n_flags = rate; | |
716 | ||
717 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
718 | ||
719 | if (tx_id >= IWL_CMD_QUEUE_NUM) | |
720 | rts_retry_limit = 3; | |
721 | else | |
722 | rts_retry_limit = 7; | |
723 | ||
724 | if (ieee80211_is_probe_response(fc)) { | |
725 | data_retry_limit = 3; | |
726 | if (data_retry_limit < rts_retry_limit) | |
727 | rts_retry_limit = data_retry_limit; | |
728 | } else | |
729 | data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
730 | ||
731 | if (priv->data_retry_limit != -1) | |
732 | data_retry_limit = priv->data_retry_limit; | |
733 | ||
734 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { | |
735 | switch (fc & IEEE80211_FCTL_STYPE) { | |
736 | case IEEE80211_STYPE_AUTH: | |
737 | case IEEE80211_STYPE_DEAUTH: | |
738 | case IEEE80211_STYPE_ASSOC_REQ: | |
739 | case IEEE80211_STYPE_REASSOC_REQ: | |
740 | if (tx_flags & TX_CMD_FLG_RTS_MSK) { | |
741 | tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
742 | tx_flags |= TX_CMD_FLG_CTS_MSK; | |
743 | } | |
744 | break; | |
745 | default: | |
746 | break; | |
747 | } | |
748 | } | |
749 | ||
750 | cmd->cmd.tx.rts_retry_limit = rts_retry_limit; | |
751 | cmd->cmd.tx.data_retry_limit = data_retry_limit; | |
752 | cmd->cmd.tx.rate = rate; | |
753 | cmd->cmd.tx.tx_flags = tx_flags; | |
754 | ||
755 | /* OFDM */ | |
14577f23 MA |
756 | cmd->cmd.tx.supp_rates[0] = |
757 | ((rate_mask & IWL_OFDM_RATES_MASK) >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
b481de9c ZY |
758 | |
759 | /* CCK */ | |
14577f23 | 760 | cmd->cmd.tx.supp_rates[1] = (rate_mask & 0xF); |
b481de9c ZY |
761 | |
762 | IWL_DEBUG_RATE("Tx sta id: %d, rate: %d (plcp), flags: 0x%4X " | |
763 | "cck/ofdm mask: 0x%x/0x%x\n", sta_id, | |
764 | cmd->cmd.tx.rate, le32_to_cpu(cmd->cmd.tx.tx_flags), | |
765 | cmd->cmd.tx.supp_rates[1], cmd->cmd.tx.supp_rates[0]); | |
766 | } | |
767 | ||
bb8c093b | 768 | u8 iwl3945_sync_sta(struct iwl3945_priv *priv, int sta_id, u16 tx_rate, u8 flags) |
b481de9c ZY |
769 | { |
770 | unsigned long flags_spin; | |
bb8c093b | 771 | struct iwl3945_station_entry *station; |
b481de9c ZY |
772 | |
773 | if (sta_id == IWL_INVALID_STATION) | |
774 | return IWL_INVALID_STATION; | |
775 | ||
776 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
777 | station = &priv->stations[sta_id]; | |
778 | ||
779 | station->sta.sta.modify_mask = STA_MODIFY_TX_RATE_MSK; | |
780 | station->sta.rate_n_flags = cpu_to_le16(tx_rate); | |
781 | station->current_rate.rate_n_flags = tx_rate; | |
782 | station->sta.mode = STA_CONTROL_MODIFY_MSK; | |
783 | ||
784 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
785 | ||
bb8c093b | 786 | iwl3945_send_add_station(priv, &station->sta, flags); |
b481de9c ZY |
787 | IWL_DEBUG_RATE("SCALE sync station %d to rate %d\n", |
788 | sta_id, tx_rate); | |
789 | return sta_id; | |
790 | } | |
791 | ||
bb8c093b | 792 | static int iwl3945_nic_set_pwr_src(struct iwl3945_priv *priv, int pwr_max) |
b481de9c ZY |
793 | { |
794 | int rc; | |
795 | unsigned long flags; | |
796 | ||
797 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 798 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
799 | if (rc) { |
800 | spin_unlock_irqrestore(&priv->lock, flags); | |
801 | return rc; | |
802 | } | |
803 | ||
804 | if (!pwr_max) { | |
805 | u32 val; | |
806 | ||
807 | rc = pci_read_config_dword(priv->pci_dev, | |
808 | PCI_POWER_SOURCE, &val); | |
809 | if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) { | |
bb8c093b | 810 | iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
811 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
812 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
bb8c093b | 813 | iwl3945_release_nic_access(priv); |
b481de9c | 814 | |
bb8c093b | 815 | iwl3945_poll_bit(priv, CSR_GPIO_IN, |
b481de9c ZY |
816 | CSR_GPIO_IN_VAL_VAUX_PWR_SRC, |
817 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); | |
818 | } else | |
bb8c093b | 819 | iwl3945_release_nic_access(priv); |
b481de9c | 820 | } else { |
bb8c093b | 821 | iwl3945_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
822 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
823 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
824 | ||
bb8c093b CH |
825 | iwl3945_release_nic_access(priv); |
826 | iwl3945_poll_bit(priv, CSR_GPIO_IN, CSR_GPIO_IN_VAL_VMAIN_PWR_SRC, | |
b481de9c ZY |
827 | CSR_GPIO_IN_BIT_AUX_POWER, 5000); /* uS */ |
828 | } | |
829 | spin_unlock_irqrestore(&priv->lock, flags); | |
830 | ||
831 | return rc; | |
832 | } | |
833 | ||
bb8c093b | 834 | static int iwl3945_rx_init(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq) |
b481de9c ZY |
835 | { |
836 | int rc; | |
837 | unsigned long flags; | |
838 | ||
839 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 840 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
841 | if (rc) { |
842 | spin_unlock_irqrestore(&priv->lock, flags); | |
843 | return rc; | |
844 | } | |
845 | ||
bb8c093b CH |
846 | iwl3945_write_direct32(priv, FH_RCSR_RBD_BASE(0), rxq->dma_addr); |
847 | iwl3945_write_direct32(priv, FH_RCSR_RPTR_ADDR(0), | |
b481de9c | 848 | priv->hw_setting.shared_phys + |
bb8c093b CH |
849 | offsetof(struct iwl3945_shared, rx_read_ptr[0])); |
850 | iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), 0); | |
851 | iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), | |
b481de9c ZY |
852 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_DMA_CHNL_EN_ENABLE | |
853 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_RDRBD_EN_ENABLE | | |
854 | ALM_FH_RCSR_RX_CONFIG_REG_BIT_WR_STTS_EN | | |
855 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_MAX_FRAG_SIZE_128 | | |
856 | (RX_QUEUE_SIZE_LOG << ALM_FH_RCSR_RX_CONFIG_REG_POS_RBDC_SIZE) | | |
857 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_IRQ_DEST_INT_HOST | | |
858 | (1 << ALM_FH_RCSR_RX_CONFIG_REG_POS_IRQ_RBTH) | | |
859 | ALM_FH_RCSR_RX_CONFIG_REG_VAL_MSG_MODE_FH); | |
860 | ||
861 | /* fake read to flush all prev I/O */ | |
bb8c093b | 862 | iwl3945_read_direct32(priv, FH_RSSR_CTRL); |
b481de9c | 863 | |
bb8c093b | 864 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
865 | spin_unlock_irqrestore(&priv->lock, flags); |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
bb8c093b | 870 | static int iwl3945_tx_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
871 | { |
872 | int rc; | |
873 | unsigned long flags; | |
874 | ||
875 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 876 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
877 | if (rc) { |
878 | spin_unlock_irqrestore(&priv->lock, flags); | |
879 | return rc; | |
880 | } | |
881 | ||
882 | /* bypass mode */ | |
bb8c093b | 883 | iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0x2); |
b481de9c ZY |
884 | |
885 | /* RA 0 is active */ | |
bb8c093b | 886 | iwl3945_write_prph(priv, ALM_SCD_ARASTAT_REG, 0x01); |
b481de9c ZY |
887 | |
888 | /* all 6 fifo are active */ | |
bb8c093b | 889 | iwl3945_write_prph(priv, ALM_SCD_TXFACT_REG, 0x3f); |
b481de9c | 890 | |
bb8c093b CH |
891 | iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_1_REG, 0x010000); |
892 | iwl3945_write_prph(priv, ALM_SCD_SBYP_MODE_2_REG, 0x030002); | |
893 | iwl3945_write_prph(priv, ALM_SCD_TXF4MF_REG, 0x000004); | |
894 | iwl3945_write_prph(priv, ALM_SCD_TXF5MF_REG, 0x000005); | |
b481de9c | 895 | |
bb8c093b | 896 | iwl3945_write_direct32(priv, FH_TSSR_CBB_BASE, |
b481de9c ZY |
897 | priv->hw_setting.shared_phys); |
898 | ||
bb8c093b | 899 | iwl3945_write_direct32(priv, FH_TSSR_MSG_CONFIG, |
b481de9c ZY |
900 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TXPD_ON | |
901 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_TXPD_ON | | |
902 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_MAX_FRAG_SIZE_128B | | |
903 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_SNOOP_RD_TFD_ON | | |
904 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RD_CBB_ON | | |
905 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_ORDER_RSP_WAIT_TH | | |
906 | ALM_FH_TSSR_TX_MSG_CONFIG_REG_VAL_RSP_WAIT_TH); | |
907 | ||
bb8c093b | 908 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
909 | spin_unlock_irqrestore(&priv->lock, flags); |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
914 | /** | |
915 | * iwl3945_txq_ctx_reset - Reset TX queue context | |
916 | * | |
917 | * Destroys all DMA structures and initialize them again | |
918 | */ | |
bb8c093b | 919 | static int iwl3945_txq_ctx_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
920 | { |
921 | int rc; | |
922 | int txq_id, slots_num; | |
923 | ||
bb8c093b | 924 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
925 | |
926 | /* Tx CMD queue */ | |
927 | rc = iwl3945_tx_reset(priv); | |
928 | if (rc) | |
929 | goto error; | |
930 | ||
931 | /* Tx queue(s) */ | |
932 | for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) { | |
933 | slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ? | |
934 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; | |
bb8c093b | 935 | rc = iwl3945_tx_queue_init(priv, &priv->txq[txq_id], slots_num, |
b481de9c ZY |
936 | txq_id); |
937 | if (rc) { | |
938 | IWL_ERROR("Tx %d queue init failed\n", txq_id); | |
939 | goto error; | |
940 | } | |
941 | } | |
942 | ||
943 | return rc; | |
944 | ||
945 | error: | |
bb8c093b | 946 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
947 | return rc; |
948 | } | |
949 | ||
bb8c093b | 950 | int iwl3945_hw_nic_init(struct iwl3945_priv *priv) |
b481de9c ZY |
951 | { |
952 | u8 rev_id; | |
953 | int rc; | |
954 | unsigned long flags; | |
bb8c093b | 955 | struct iwl3945_rx_queue *rxq = &priv->rxq; |
b481de9c | 956 | |
bb8c093b | 957 | iwl3945_power_init_handle(priv); |
b481de9c ZY |
958 | |
959 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b CH |
960 | iwl3945_set_bit(priv, CSR_ANA_PLL_CFG, (1 << 24)); |
961 | iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS, | |
b481de9c ZY |
962 | CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); |
963 | ||
bb8c093b CH |
964 | iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
965 | rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL, | |
b481de9c ZY |
966 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
967 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
968 | if (rc < 0) { | |
969 | spin_unlock_irqrestore(&priv->lock, flags); | |
970 | IWL_DEBUG_INFO("Failed to init the card\n"); | |
971 | return rc; | |
972 | } | |
973 | ||
bb8c093b | 974 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
975 | if (rc) { |
976 | spin_unlock_irqrestore(&priv->lock, flags); | |
977 | return rc; | |
978 | } | |
bb8c093b | 979 | iwl3945_write_prph(priv, APMG_CLK_EN_REG, |
b481de9c ZY |
980 | APMG_CLK_VAL_DMA_CLK_RQT | |
981 | APMG_CLK_VAL_BSM_CLK_RQT); | |
982 | udelay(20); | |
bb8c093b | 983 | iwl3945_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
b481de9c | 984 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
bb8c093b | 985 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
986 | spin_unlock_irqrestore(&priv->lock, flags); |
987 | ||
988 | /* Determine HW type */ | |
989 | rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); | |
990 | if (rc) | |
991 | return rc; | |
992 | IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id); | |
993 | ||
994 | iwl3945_nic_set_pwr_src(priv, 1); | |
995 | spin_lock_irqsave(&priv->lock, flags); | |
996 | ||
997 | if (rev_id & PCI_CFG_REV_ID_BIT_RTP) | |
998 | IWL_DEBUG_INFO("RTP type \n"); | |
999 | else if (rev_id & PCI_CFG_REV_ID_BIT_BASIC_SKU) { | |
1000 | IWL_DEBUG_INFO("ALM-MB type\n"); | |
bb8c093b | 1001 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1002 | CSR_HW_IF_CONFIG_REG_BIT_ALMAGOR_MB); |
1003 | } else { | |
1004 | IWL_DEBUG_INFO("ALM-MM type\n"); | |
bb8c093b | 1005 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1006 | CSR_HW_IF_CONFIG_REG_BIT_ALMAGOR_MM); |
1007 | } | |
1008 | ||
1009 | spin_unlock_irqrestore(&priv->lock, flags); | |
1010 | ||
1011 | /* Initialize the EEPROM */ | |
bb8c093b | 1012 | rc = iwl3945_eeprom_init(priv); |
b481de9c ZY |
1013 | if (rc) |
1014 | return rc; | |
1015 | ||
1016 | spin_lock_irqsave(&priv->lock, flags); | |
1017 | if (EEPROM_SKU_CAP_OP_MODE_MRC == priv->eeprom.sku_cap) { | |
1018 | IWL_DEBUG_INFO("SKU OP mode is mrc\n"); | |
bb8c093b | 1019 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1020 | CSR_HW_IF_CONFIG_REG_BIT_SKU_MRC); |
1021 | } else | |
1022 | IWL_DEBUG_INFO("SKU OP mode is basic\n"); | |
1023 | ||
1024 | if ((priv->eeprom.board_revision & 0xF0) == 0xD0) { | |
1025 | IWL_DEBUG_INFO("3945ABG revision is 0x%X\n", | |
1026 | priv->eeprom.board_revision); | |
bb8c093b | 1027 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1028 | CSR_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
1029 | } else { | |
1030 | IWL_DEBUG_INFO("3945ABG revision is 0x%X\n", | |
1031 | priv->eeprom.board_revision); | |
bb8c093b | 1032 | iwl3945_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1033 | CSR_HW_IF_CONFIG_REG_BIT_BOARD_TYPE); |
1034 | } | |
1035 | ||
1036 | if (priv->eeprom.almgor_m_version <= 1) { | |
bb8c093b | 1037 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1038 | CSR_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_A); |
1039 | IWL_DEBUG_INFO("Card M type A version is 0x%X\n", | |
1040 | priv->eeprom.almgor_m_version); | |
1041 | } else { | |
1042 | IWL_DEBUG_INFO("Card M type B version is 0x%X\n", | |
1043 | priv->eeprom.almgor_m_version); | |
bb8c093b | 1044 | iwl3945_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
b481de9c ZY |
1045 | CSR_HW_IF_CONFIG_REG_BITS_SILICON_TYPE_B); |
1046 | } | |
1047 | spin_unlock_irqrestore(&priv->lock, flags); | |
1048 | ||
1049 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) | |
1050 | IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n"); | |
1051 | ||
1052 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) | |
1053 | IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n"); | |
1054 | ||
1055 | /* Allocate the RX queue, or reset if it is already allocated */ | |
1056 | if (!rxq->bd) { | |
bb8c093b | 1057 | rc = iwl3945_rx_queue_alloc(priv); |
b481de9c ZY |
1058 | if (rc) { |
1059 | IWL_ERROR("Unable to initialize Rx queue\n"); | |
1060 | return -ENOMEM; | |
1061 | } | |
1062 | } else | |
bb8c093b | 1063 | iwl3945_rx_queue_reset(priv, rxq); |
b481de9c | 1064 | |
bb8c093b | 1065 | iwl3945_rx_replenish(priv); |
b481de9c ZY |
1066 | |
1067 | iwl3945_rx_init(priv, rxq); | |
1068 | ||
1069 | spin_lock_irqsave(&priv->lock, flags); | |
1070 | ||
1071 | /* Look at using this instead: | |
1072 | rxq->need_update = 1; | |
bb8c093b | 1073 | iwl3945_rx_queue_update_write_ptr(priv, rxq); |
b481de9c ZY |
1074 | */ |
1075 | ||
bb8c093b | 1076 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
1077 | if (rc) { |
1078 | spin_unlock_irqrestore(&priv->lock, flags); | |
1079 | return rc; | |
1080 | } | |
bb8c093b CH |
1081 | iwl3945_write_direct32(priv, FH_RCSR_WPTR(0), rxq->write & ~7); |
1082 | iwl3945_release_nic_access(priv); | |
b481de9c ZY |
1083 | |
1084 | spin_unlock_irqrestore(&priv->lock, flags); | |
1085 | ||
1086 | rc = iwl3945_txq_ctx_reset(priv); | |
1087 | if (rc) | |
1088 | return rc; | |
1089 | ||
1090 | set_bit(STATUS_INIT, &priv->status); | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /** | |
bb8c093b | 1096 | * iwl3945_hw_txq_ctx_free - Free TXQ Context |
b481de9c ZY |
1097 | * |
1098 | * Destroy all TX DMA queues and structures | |
1099 | */ | |
bb8c093b | 1100 | void iwl3945_hw_txq_ctx_free(struct iwl3945_priv *priv) |
b481de9c ZY |
1101 | { |
1102 | int txq_id; | |
1103 | ||
1104 | /* Tx queues */ | |
1105 | for (txq_id = 0; txq_id < TFD_QUEUE_MAX; txq_id++) | |
bb8c093b | 1106 | iwl3945_tx_queue_free(priv, &priv->txq[txq_id]); |
b481de9c ZY |
1107 | } |
1108 | ||
bb8c093b | 1109 | void iwl3945_hw_txq_ctx_stop(struct iwl3945_priv *priv) |
b481de9c ZY |
1110 | { |
1111 | int queue; | |
1112 | unsigned long flags; | |
1113 | ||
1114 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 1115 | if (iwl3945_grab_nic_access(priv)) { |
b481de9c | 1116 | spin_unlock_irqrestore(&priv->lock, flags); |
bb8c093b | 1117 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1118 | return; |
1119 | } | |
1120 | ||
1121 | /* stop SCD */ | |
bb8c093b | 1122 | iwl3945_write_prph(priv, ALM_SCD_MODE_REG, 0); |
b481de9c ZY |
1123 | |
1124 | /* reset TFD queues */ | |
1125 | for (queue = TFD_QUEUE_MIN; queue < TFD_QUEUE_MAX; queue++) { | |
bb8c093b CH |
1126 | iwl3945_write_direct32(priv, FH_TCSR_CONFIG(queue), 0x0); |
1127 | iwl3945_poll_direct_bit(priv, FH_TSSR_TX_STATUS, | |
b481de9c ZY |
1128 | ALM_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(queue), |
1129 | 1000); | |
1130 | } | |
1131 | ||
bb8c093b | 1132 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1133 | spin_unlock_irqrestore(&priv->lock, flags); |
1134 | ||
bb8c093b | 1135 | iwl3945_hw_txq_ctx_free(priv); |
b481de9c ZY |
1136 | } |
1137 | ||
bb8c093b | 1138 | int iwl3945_hw_nic_stop_master(struct iwl3945_priv *priv) |
b481de9c ZY |
1139 | { |
1140 | int rc = 0; | |
1141 | u32 reg_val; | |
1142 | unsigned long flags; | |
1143 | ||
1144 | spin_lock_irqsave(&priv->lock, flags); | |
1145 | ||
1146 | /* set stop master bit */ | |
bb8c093b | 1147 | iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
b481de9c | 1148 | |
bb8c093b | 1149 | reg_val = iwl3945_read32(priv, CSR_GP_CNTRL); |
b481de9c ZY |
1150 | |
1151 | if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE == | |
1152 | (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE)) | |
1153 | IWL_DEBUG_INFO("Card in power save, master is already " | |
1154 | "stopped\n"); | |
1155 | else { | |
bb8c093b | 1156 | rc = iwl3945_poll_bit(priv, CSR_RESET, |
b481de9c ZY |
1157 | CSR_RESET_REG_FLAG_MASTER_DISABLED, |
1158 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
1159 | if (rc < 0) { | |
1160 | spin_unlock_irqrestore(&priv->lock, flags); | |
1161 | return rc; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | spin_unlock_irqrestore(&priv->lock, flags); | |
1166 | IWL_DEBUG_INFO("stop master\n"); | |
1167 | ||
1168 | return rc; | |
1169 | } | |
1170 | ||
bb8c093b | 1171 | int iwl3945_hw_nic_reset(struct iwl3945_priv *priv) |
b481de9c ZY |
1172 | { |
1173 | int rc; | |
1174 | unsigned long flags; | |
1175 | ||
bb8c093b | 1176 | iwl3945_hw_nic_stop_master(priv); |
b481de9c ZY |
1177 | |
1178 | spin_lock_irqsave(&priv->lock, flags); | |
1179 | ||
bb8c093b | 1180 | iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
b481de9c | 1181 | |
bb8c093b | 1182 | rc = iwl3945_poll_bit(priv, CSR_GP_CNTRL, |
b481de9c ZY |
1183 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
1184 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
1185 | ||
bb8c093b | 1186 | rc = iwl3945_grab_nic_access(priv); |
b481de9c | 1187 | if (!rc) { |
bb8c093b | 1188 | iwl3945_write_prph(priv, APMG_CLK_CTRL_REG, |
b481de9c ZY |
1189 | APMG_CLK_VAL_BSM_CLK_RQT); |
1190 | ||
1191 | udelay(10); | |
1192 | ||
bb8c093b | 1193 | iwl3945_set_bit(priv, CSR_GP_CNTRL, |
b481de9c ZY |
1194 | CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
1195 | ||
bb8c093b CH |
1196 | iwl3945_write_prph(priv, APMG_RTC_INT_MSK_REG, 0x0); |
1197 | iwl3945_write_prph(priv, APMG_RTC_INT_STT_REG, | |
b481de9c ZY |
1198 | 0xFFFFFFFF); |
1199 | ||
1200 | /* enable DMA */ | |
bb8c093b | 1201 | iwl3945_write_prph(priv, APMG_CLK_EN_REG, |
b481de9c ZY |
1202 | APMG_CLK_VAL_DMA_CLK_RQT | |
1203 | APMG_CLK_VAL_BSM_CLK_RQT); | |
1204 | udelay(10); | |
1205 | ||
bb8c093b | 1206 | iwl3945_set_bits_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
1207 | APMG_PS_CTRL_VAL_RESET_REQ); |
1208 | udelay(5); | |
bb8c093b | 1209 | iwl3945_clear_bits_prph(priv, APMG_PS_CTRL_REG, |
b481de9c | 1210 | APMG_PS_CTRL_VAL_RESET_REQ); |
bb8c093b | 1211 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
1212 | } |
1213 | ||
1214 | /* Clear the 'host command active' bit... */ | |
1215 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
1216 | ||
1217 | wake_up_interruptible(&priv->wait_command_queue); | |
1218 | spin_unlock_irqrestore(&priv->lock, flags); | |
1219 | ||
1220 | return rc; | |
1221 | } | |
1222 | ||
1223 | /** | |
bb8c093b | 1224 | * iwl3945_hw_reg_adjust_power_by_temp |
bbc5807b IS |
1225 | * return index delta into power gain settings table |
1226 | */ | |
bb8c093b | 1227 | static int iwl3945_hw_reg_adjust_power_by_temp(int new_reading, int old_reading) |
b481de9c ZY |
1228 | { |
1229 | return (new_reading - old_reading) * (-11) / 100; | |
1230 | } | |
1231 | ||
1232 | /** | |
bb8c093b | 1233 | * iwl3945_hw_reg_temp_out_of_range - Keep temperature in sane range |
b481de9c | 1234 | */ |
bb8c093b | 1235 | static inline int iwl3945_hw_reg_temp_out_of_range(int temperature) |
b481de9c ZY |
1236 | { |
1237 | return (((temperature < -260) || (temperature > 25)) ? 1 : 0); | |
1238 | } | |
1239 | ||
bb8c093b | 1240 | int iwl3945_hw_get_temperature(struct iwl3945_priv *priv) |
b481de9c | 1241 | { |
bb8c093b | 1242 | return iwl3945_read32(priv, CSR_UCODE_DRV_GP2); |
b481de9c ZY |
1243 | } |
1244 | ||
1245 | /** | |
bb8c093b | 1246 | * iwl3945_hw_reg_txpower_get_temperature |
bbc5807b IS |
1247 | * get the current temperature by reading from NIC |
1248 | */ | |
bb8c093b | 1249 | static int iwl3945_hw_reg_txpower_get_temperature(struct iwl3945_priv *priv) |
b481de9c ZY |
1250 | { |
1251 | int temperature; | |
1252 | ||
bb8c093b | 1253 | temperature = iwl3945_hw_get_temperature(priv); |
b481de9c ZY |
1254 | |
1255 | /* driver's okay range is -260 to +25. | |
1256 | * human readable okay range is 0 to +285 */ | |
1257 | IWL_DEBUG_INFO("Temperature: %d\n", temperature + IWL_TEMP_CONVERT); | |
1258 | ||
1259 | /* handle insane temp reading */ | |
bb8c093b | 1260 | if (iwl3945_hw_reg_temp_out_of_range(temperature)) { |
b481de9c ZY |
1261 | IWL_ERROR("Error bad temperature value %d\n", temperature); |
1262 | ||
1263 | /* if really really hot(?), | |
1264 | * substitute the 3rd band/group's temp measured at factory */ | |
1265 | if (priv->last_temperature > 100) | |
1266 | temperature = priv->eeprom.groups[2].temperature; | |
1267 | else /* else use most recent "sane" value from driver */ | |
1268 | temperature = priv->last_temperature; | |
1269 | } | |
1270 | ||
1271 | return temperature; /* raw, not "human readable" */ | |
1272 | } | |
1273 | ||
1274 | /* Adjust Txpower only if temperature variance is greater than threshold. | |
1275 | * | |
1276 | * Both are lower than older versions' 9 degrees */ | |
1277 | #define IWL_TEMPERATURE_LIMIT_TIMER 6 | |
1278 | ||
1279 | /** | |
1280 | * is_temp_calib_needed - determines if new calibration is needed | |
1281 | * | |
1282 | * records new temperature in tx_mgr->temperature. | |
1283 | * replaces tx_mgr->last_temperature *only* if calib needed | |
1284 | * (assumes caller will actually do the calibration!). */ | |
bb8c093b | 1285 | static int is_temp_calib_needed(struct iwl3945_priv *priv) |
b481de9c ZY |
1286 | { |
1287 | int temp_diff; | |
1288 | ||
bb8c093b | 1289 | priv->temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
1290 | temp_diff = priv->temperature - priv->last_temperature; |
1291 | ||
1292 | /* get absolute value */ | |
1293 | if (temp_diff < 0) { | |
1294 | IWL_DEBUG_POWER("Getting cooler, delta %d,\n", temp_diff); | |
1295 | temp_diff = -temp_diff; | |
1296 | } else if (temp_diff == 0) | |
1297 | IWL_DEBUG_POWER("Same temp,\n"); | |
1298 | else | |
1299 | IWL_DEBUG_POWER("Getting warmer, delta %d,\n", temp_diff); | |
1300 | ||
1301 | /* if we don't need calibration, *don't* update last_temperature */ | |
1302 | if (temp_diff < IWL_TEMPERATURE_LIMIT_TIMER) { | |
1303 | IWL_DEBUG_POWER("Timed thermal calib not needed\n"); | |
1304 | return 0; | |
1305 | } | |
1306 | ||
1307 | IWL_DEBUG_POWER("Timed thermal calib needed\n"); | |
1308 | ||
1309 | /* assume that caller will actually do calib ... | |
1310 | * update the "last temperature" value */ | |
1311 | priv->last_temperature = priv->temperature; | |
1312 | return 1; | |
1313 | } | |
1314 | ||
1315 | #define IWL_MAX_GAIN_ENTRIES 78 | |
1316 | #define IWL_CCK_FROM_OFDM_POWER_DIFF -5 | |
1317 | #define IWL_CCK_FROM_OFDM_INDEX_DIFF (10) | |
1318 | ||
1319 | /* radio and DSP power table, each step is 1/2 dB. | |
1320 | * 1st number is for RF analog gain, 2nd number is for DSP pre-DAC gain. */ | |
bb8c093b | 1321 | static struct iwl3945_tx_power power_gain_table[2][IWL_MAX_GAIN_ENTRIES] = { |
b481de9c ZY |
1322 | { |
1323 | {251, 127}, /* 2.4 GHz, highest power */ | |
1324 | {251, 127}, | |
1325 | {251, 127}, | |
1326 | {251, 127}, | |
1327 | {251, 125}, | |
1328 | {251, 110}, | |
1329 | {251, 105}, | |
1330 | {251, 98}, | |
1331 | {187, 125}, | |
1332 | {187, 115}, | |
1333 | {187, 108}, | |
1334 | {187, 99}, | |
1335 | {243, 119}, | |
1336 | {243, 111}, | |
1337 | {243, 105}, | |
1338 | {243, 97}, | |
1339 | {243, 92}, | |
1340 | {211, 106}, | |
1341 | {211, 100}, | |
1342 | {179, 120}, | |
1343 | {179, 113}, | |
1344 | {179, 107}, | |
1345 | {147, 125}, | |
1346 | {147, 119}, | |
1347 | {147, 112}, | |
1348 | {147, 106}, | |
1349 | {147, 101}, | |
1350 | {147, 97}, | |
1351 | {147, 91}, | |
1352 | {115, 107}, | |
1353 | {235, 121}, | |
1354 | {235, 115}, | |
1355 | {235, 109}, | |
1356 | {203, 127}, | |
1357 | {203, 121}, | |
1358 | {203, 115}, | |
1359 | {203, 108}, | |
1360 | {203, 102}, | |
1361 | {203, 96}, | |
1362 | {203, 92}, | |
1363 | {171, 110}, | |
1364 | {171, 104}, | |
1365 | {171, 98}, | |
1366 | {139, 116}, | |
1367 | {227, 125}, | |
1368 | {227, 119}, | |
1369 | {227, 113}, | |
1370 | {227, 107}, | |
1371 | {227, 101}, | |
1372 | {227, 96}, | |
1373 | {195, 113}, | |
1374 | {195, 106}, | |
1375 | {195, 102}, | |
1376 | {195, 95}, | |
1377 | {163, 113}, | |
1378 | {163, 106}, | |
1379 | {163, 102}, | |
1380 | {163, 95}, | |
1381 | {131, 113}, | |
1382 | {131, 106}, | |
1383 | {131, 102}, | |
1384 | {131, 95}, | |
1385 | {99, 113}, | |
1386 | {99, 106}, | |
1387 | {99, 102}, | |
1388 | {99, 95}, | |
1389 | {67, 113}, | |
1390 | {67, 106}, | |
1391 | {67, 102}, | |
1392 | {67, 95}, | |
1393 | {35, 113}, | |
1394 | {35, 106}, | |
1395 | {35, 102}, | |
1396 | {35, 95}, | |
1397 | {3, 113}, | |
1398 | {3, 106}, | |
1399 | {3, 102}, | |
1400 | {3, 95} }, /* 2.4 GHz, lowest power */ | |
1401 | { | |
1402 | {251, 127}, /* 5.x GHz, highest power */ | |
1403 | {251, 120}, | |
1404 | {251, 114}, | |
1405 | {219, 119}, | |
1406 | {219, 101}, | |
1407 | {187, 113}, | |
1408 | {187, 102}, | |
1409 | {155, 114}, | |
1410 | {155, 103}, | |
1411 | {123, 117}, | |
1412 | {123, 107}, | |
1413 | {123, 99}, | |
1414 | {123, 92}, | |
1415 | {91, 108}, | |
1416 | {59, 125}, | |
1417 | {59, 118}, | |
1418 | {59, 109}, | |
1419 | {59, 102}, | |
1420 | {59, 96}, | |
1421 | {59, 90}, | |
1422 | {27, 104}, | |
1423 | {27, 98}, | |
1424 | {27, 92}, | |
1425 | {115, 118}, | |
1426 | {115, 111}, | |
1427 | {115, 104}, | |
1428 | {83, 126}, | |
1429 | {83, 121}, | |
1430 | {83, 113}, | |
1431 | {83, 105}, | |
1432 | {83, 99}, | |
1433 | {51, 118}, | |
1434 | {51, 111}, | |
1435 | {51, 104}, | |
1436 | {51, 98}, | |
1437 | {19, 116}, | |
1438 | {19, 109}, | |
1439 | {19, 102}, | |
1440 | {19, 98}, | |
1441 | {19, 93}, | |
1442 | {171, 113}, | |
1443 | {171, 107}, | |
1444 | {171, 99}, | |
1445 | {139, 120}, | |
1446 | {139, 113}, | |
1447 | {139, 107}, | |
1448 | {139, 99}, | |
1449 | {107, 120}, | |
1450 | {107, 113}, | |
1451 | {107, 107}, | |
1452 | {107, 99}, | |
1453 | {75, 120}, | |
1454 | {75, 113}, | |
1455 | {75, 107}, | |
1456 | {75, 99}, | |
1457 | {43, 120}, | |
1458 | {43, 113}, | |
1459 | {43, 107}, | |
1460 | {43, 99}, | |
1461 | {11, 120}, | |
1462 | {11, 113}, | |
1463 | {11, 107}, | |
1464 | {11, 99}, | |
1465 | {131, 107}, | |
1466 | {131, 99}, | |
1467 | {99, 120}, | |
1468 | {99, 113}, | |
1469 | {99, 107}, | |
1470 | {99, 99}, | |
1471 | {67, 120}, | |
1472 | {67, 113}, | |
1473 | {67, 107}, | |
1474 | {67, 99}, | |
1475 | {35, 120}, | |
1476 | {35, 113}, | |
1477 | {35, 107}, | |
1478 | {35, 99}, | |
1479 | {3, 120} } /* 5.x GHz, lowest power */ | |
1480 | }; | |
1481 | ||
bb8c093b | 1482 | static inline u8 iwl3945_hw_reg_fix_power_index(int index) |
b481de9c ZY |
1483 | { |
1484 | if (index < 0) | |
1485 | return 0; | |
1486 | if (index >= IWL_MAX_GAIN_ENTRIES) | |
1487 | return IWL_MAX_GAIN_ENTRIES - 1; | |
1488 | return (u8) index; | |
1489 | } | |
1490 | ||
1491 | /* Kick off thermal recalibration check every 60 seconds */ | |
1492 | #define REG_RECALIB_PERIOD (60) | |
1493 | ||
1494 | /** | |
bb8c093b | 1495 | * iwl3945_hw_reg_set_scan_power - Set Tx power for scan probe requests |
b481de9c ZY |
1496 | * |
1497 | * Set (in our channel info database) the direct scan Tx power for 1 Mbit (CCK) | |
1498 | * or 6 Mbit (OFDM) rates. | |
1499 | */ | |
bb8c093b | 1500 | static void iwl3945_hw_reg_set_scan_power(struct iwl3945_priv *priv, u32 scan_tbl_index, |
b481de9c | 1501 | s32 rate_index, const s8 *clip_pwrs, |
bb8c093b | 1502 | struct iwl3945_channel_info *ch_info, |
b481de9c ZY |
1503 | int band_index) |
1504 | { | |
bb8c093b | 1505 | struct iwl3945_scan_power_info *scan_power_info; |
b481de9c ZY |
1506 | s8 power; |
1507 | u8 power_index; | |
1508 | ||
1509 | scan_power_info = &ch_info->scan_pwr_info[scan_tbl_index]; | |
1510 | ||
1511 | /* use this channel group's 6Mbit clipping/saturation pwr, | |
1512 | * but cap at regulatory scan power restriction (set during init | |
1513 | * based on eeprom channel data) for this channel. */ | |
14577f23 | 1514 | power = min(ch_info->scan_power, clip_pwrs[IWL_RATE_6M_INDEX_TABLE]); |
b481de9c ZY |
1515 | |
1516 | /* further limit to user's max power preference. | |
1517 | * FIXME: Other spectrum management power limitations do not | |
1518 | * seem to apply?? */ | |
1519 | power = min(power, priv->user_txpower_limit); | |
1520 | scan_power_info->requested_power = power; | |
1521 | ||
1522 | /* find difference between new scan *power* and current "normal" | |
1523 | * Tx *power* for 6Mb. Use this difference (x2) to adjust the | |
1524 | * current "normal" temperature-compensated Tx power *index* for | |
1525 | * this rate (1Mb or 6Mb) to yield new temp-compensated scan power | |
1526 | * *index*. */ | |
1527 | power_index = ch_info->power_info[rate_index].power_table_index | |
1528 | - (power - ch_info->power_info | |
14577f23 | 1529 | [IWL_RATE_6M_INDEX_TABLE].requested_power) * 2; |
b481de9c ZY |
1530 | |
1531 | /* store reference index that we use when adjusting *all* scan | |
1532 | * powers. So we can accommodate user (all channel) or spectrum | |
1533 | * management (single channel) power changes "between" temperature | |
1534 | * feedback compensation procedures. | |
1535 | * don't force fit this reference index into gain table; it may be a | |
1536 | * negative number. This will help avoid errors when we're at | |
1537 | * the lower bounds (highest gains, for warmest temperatures) | |
1538 | * of the table. */ | |
1539 | ||
1540 | /* don't exceed table bounds for "real" setting */ | |
bb8c093b | 1541 | power_index = iwl3945_hw_reg_fix_power_index(power_index); |
b481de9c ZY |
1542 | |
1543 | scan_power_info->power_table_index = power_index; | |
1544 | scan_power_info->tpc.tx_gain = | |
1545 | power_gain_table[band_index][power_index].tx_gain; | |
1546 | scan_power_info->tpc.dsp_atten = | |
1547 | power_gain_table[band_index][power_index].dsp_atten; | |
1548 | } | |
1549 | ||
1550 | /** | |
bb8c093b | 1551 | * iwl3945_hw_reg_send_txpower - fill in Tx Power command with gain settings |
b481de9c ZY |
1552 | * |
1553 | * Configures power settings for all rates for the current channel, | |
1554 | * using values from channel info struct, and send to NIC | |
1555 | */ | |
bb8c093b | 1556 | int iwl3945_hw_reg_send_txpower(struct iwl3945_priv *priv) |
b481de9c | 1557 | { |
14577f23 | 1558 | int rate_idx, i; |
bb8c093b CH |
1559 | const struct iwl3945_channel_info *ch_info = NULL; |
1560 | struct iwl3945_txpowertable_cmd txpower = { | |
b481de9c ZY |
1561 | .channel = priv->active_rxon.channel, |
1562 | }; | |
1563 | ||
1564 | txpower.band = (priv->phymode == MODE_IEEE80211A) ? 0 : 1; | |
bb8c093b | 1565 | ch_info = iwl3945_get_channel_info(priv, |
b481de9c ZY |
1566 | priv->phymode, |
1567 | le16_to_cpu(priv->active_rxon.channel)); | |
1568 | if (!ch_info) { | |
1569 | IWL_ERROR | |
1570 | ("Failed to get channel info for channel %d [%d]\n", | |
1571 | le16_to_cpu(priv->active_rxon.channel), priv->phymode); | |
1572 | return -EINVAL; | |
1573 | } | |
1574 | ||
1575 | if (!is_channel_valid(ch_info)) { | |
1576 | IWL_DEBUG_POWER("Not calling TX_PWR_TABLE_CMD on " | |
1577 | "non-Tx channel.\n"); | |
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | /* fill cmd with power settings for all rates for current channel */ | |
14577f23 MA |
1582 | /* Fill OFDM rate */ |
1583 | for (rate_idx = IWL_FIRST_OFDM_RATE, i = 0; | |
1584 | rate_idx <= IWL_LAST_OFDM_RATE; rate_idx++, i++) { | |
1585 | ||
1586 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1587 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
b481de9c ZY |
1588 | |
1589 | IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", | |
1590 | le16_to_cpu(txpower.channel), | |
1591 | txpower.band, | |
14577f23 MA |
1592 | txpower.power[i].tpc.tx_gain, |
1593 | txpower.power[i].tpc.dsp_atten, | |
1594 | txpower.power[i].rate); | |
1595 | } | |
1596 | /* Fill CCK rates */ | |
1597 | for (rate_idx = IWL_FIRST_CCK_RATE; | |
1598 | rate_idx <= IWL_LAST_CCK_RATE; rate_idx++, i++) { | |
1599 | txpower.power[i].tpc = ch_info->power_info[i].tpc; | |
bb8c093b | 1600 | txpower.power[i].rate = iwl3945_rates[rate_idx].plcp; |
14577f23 MA |
1601 | |
1602 | IWL_DEBUG_POWER("ch %d:%d rf %d dsp %3d rate code 0x%02x\n", | |
1603 | le16_to_cpu(txpower.channel), | |
1604 | txpower.band, | |
1605 | txpower.power[i].tpc.tx_gain, | |
1606 | txpower.power[i].tpc.dsp_atten, | |
1607 | txpower.power[i].rate); | |
b481de9c ZY |
1608 | } |
1609 | ||
bb8c093b CH |
1610 | return iwl3945_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, |
1611 | sizeof(struct iwl3945_txpowertable_cmd), &txpower); | |
b481de9c ZY |
1612 | |
1613 | } | |
1614 | ||
1615 | /** | |
bb8c093b | 1616 | * iwl3945_hw_reg_set_new_power - Configures power tables at new levels |
b481de9c ZY |
1617 | * @ch_info: Channel to update. Uses power_info.requested_power. |
1618 | * | |
1619 | * Replace requested_power and base_power_index ch_info fields for | |
1620 | * one channel. | |
1621 | * | |
1622 | * Called if user or spectrum management changes power preferences. | |
1623 | * Takes into account h/w and modulation limitations (clip power). | |
1624 | * | |
1625 | * This does *not* send anything to NIC, just sets up ch_info for one channel. | |
1626 | * | |
1627 | * NOTE: reg_compensate_for_temperature_dif() *must* be run after this to | |
1628 | * properly fill out the scan powers, and actual h/w gain settings, | |
1629 | * and send changes to NIC | |
1630 | */ | |
bb8c093b CH |
1631 | static int iwl3945_hw_reg_set_new_power(struct iwl3945_priv *priv, |
1632 | struct iwl3945_channel_info *ch_info) | |
b481de9c | 1633 | { |
bb8c093b | 1634 | struct iwl3945_channel_power_info *power_info; |
b481de9c ZY |
1635 | int power_changed = 0; |
1636 | int i; | |
1637 | const s8 *clip_pwrs; | |
1638 | int power; | |
1639 | ||
1640 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
1641 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
1642 | ||
1643 | /* Get this channel's rate-to-current-power settings table */ | |
1644 | power_info = ch_info->power_info; | |
1645 | ||
1646 | /* update OFDM Txpower settings */ | |
14577f23 | 1647 | for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; |
b481de9c ZY |
1648 | i++, ++power_info) { |
1649 | int delta_idx; | |
1650 | ||
1651 | /* limit new power to be no more than h/w capability */ | |
1652 | power = min(ch_info->curr_txpow, clip_pwrs[i]); | |
1653 | if (power == power_info->requested_power) | |
1654 | continue; | |
1655 | ||
1656 | /* find difference between old and new requested powers, | |
1657 | * update base (non-temp-compensated) power index */ | |
1658 | delta_idx = (power - power_info->requested_power) * 2; | |
1659 | power_info->base_power_index -= delta_idx; | |
1660 | ||
1661 | /* save new requested power value */ | |
1662 | power_info->requested_power = power; | |
1663 | ||
1664 | power_changed = 1; | |
1665 | } | |
1666 | ||
1667 | /* update CCK Txpower settings, based on OFDM 12M setting ... | |
1668 | * ... all CCK power settings for a given channel are the *same*. */ | |
1669 | if (power_changed) { | |
1670 | power = | |
14577f23 | 1671 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1672 | requested_power + IWL_CCK_FROM_OFDM_POWER_DIFF; |
1673 | ||
bb8c093b | 1674 | /* do all CCK rates' iwl3945_channel_power_info structures */ |
14577f23 | 1675 | for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) { |
b481de9c ZY |
1676 | power_info->requested_power = power; |
1677 | power_info->base_power_index = | |
14577f23 | 1678 | ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]. |
b481de9c ZY |
1679 | base_power_index + IWL_CCK_FROM_OFDM_INDEX_DIFF; |
1680 | ++power_info; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | /** | |
bb8c093b | 1688 | * iwl3945_hw_reg_get_ch_txpower_limit - returns new power limit for channel |
b481de9c ZY |
1689 | * |
1690 | * NOTE: Returned power limit may be less (but not more) than requested, | |
1691 | * based strictly on regulatory (eeprom and spectrum mgt) limitations | |
1692 | * (no consideration for h/w clipping limitations). | |
1693 | */ | |
bb8c093b | 1694 | static int iwl3945_hw_reg_get_ch_txpower_limit(struct iwl3945_channel_info *ch_info) |
b481de9c ZY |
1695 | { |
1696 | s8 max_power; | |
1697 | ||
1698 | #if 0 | |
1699 | /* if we're using TGd limits, use lower of TGd or EEPROM */ | |
1700 | if (ch_info->tgd_data.max_power != 0) | |
1701 | max_power = min(ch_info->tgd_data.max_power, | |
1702 | ch_info->eeprom.max_power_avg); | |
1703 | ||
1704 | /* else just use EEPROM limits */ | |
1705 | else | |
1706 | #endif | |
1707 | max_power = ch_info->eeprom.max_power_avg; | |
1708 | ||
1709 | return min(max_power, ch_info->max_power_avg); | |
1710 | } | |
1711 | ||
1712 | /** | |
bb8c093b | 1713 | * iwl3945_hw_reg_comp_txpower_temp - Compensate for temperature |
b481de9c ZY |
1714 | * |
1715 | * Compensate txpower settings of *all* channels for temperature. | |
1716 | * This only accounts for the difference between current temperature | |
1717 | * and the factory calibration temperatures, and bases the new settings | |
1718 | * on the channel's base_power_index. | |
1719 | * | |
1720 | * If RxOn is "associated", this sends the new Txpower to NIC! | |
1721 | */ | |
bb8c093b | 1722 | static int iwl3945_hw_reg_comp_txpower_temp(struct iwl3945_priv *priv) |
b481de9c | 1723 | { |
bb8c093b | 1724 | struct iwl3945_channel_info *ch_info = NULL; |
b481de9c ZY |
1725 | int delta_index; |
1726 | const s8 *clip_pwrs; /* array of h/w max power levels for each rate */ | |
1727 | u8 a_band; | |
1728 | u8 rate_index; | |
1729 | u8 scan_tbl_index; | |
1730 | u8 i; | |
1731 | int ref_temp; | |
1732 | int temperature = priv->temperature; | |
1733 | ||
1734 | /* set up new Tx power info for each and every channel, 2.4 and 5.x */ | |
1735 | for (i = 0; i < priv->channel_count; i++) { | |
1736 | ch_info = &priv->channel_info[i]; | |
1737 | a_band = is_channel_a_band(ch_info); | |
1738 | ||
1739 | /* Get this chnlgrp's factory calibration temperature */ | |
1740 | ref_temp = (s16)priv->eeprom.groups[ch_info->group_index]. | |
1741 | temperature; | |
1742 | ||
1743 | /* get power index adjustment based on curr and factory | |
1744 | * temps */ | |
bb8c093b | 1745 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
b481de9c ZY |
1746 | ref_temp); |
1747 | ||
1748 | /* set tx power value for all rates, OFDM and CCK */ | |
1749 | for (rate_index = 0; rate_index < IWL_RATE_COUNT; | |
1750 | rate_index++) { | |
1751 | int power_idx = | |
1752 | ch_info->power_info[rate_index].base_power_index; | |
1753 | ||
1754 | /* temperature compensate */ | |
1755 | power_idx += delta_index; | |
1756 | ||
1757 | /* stay within table range */ | |
bb8c093b | 1758 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c ZY |
1759 | ch_info->power_info[rate_index]. |
1760 | power_table_index = (u8) power_idx; | |
1761 | ch_info->power_info[rate_index].tpc = | |
1762 | power_gain_table[a_band][power_idx]; | |
1763 | } | |
1764 | ||
1765 | /* Get this chnlgrp's rate-to-max/clip-powers table */ | |
1766 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
1767 | ||
1768 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
1769 | for (scan_tbl_index = 0; | |
1770 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
1771 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 1772 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 1773 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
1774 | actual_index, clip_pwrs, |
1775 | ch_info, a_band); | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | /* send Txpower command for current channel to ucode */ | |
bb8c093b | 1780 | return iwl3945_hw_reg_send_txpower(priv); |
b481de9c ZY |
1781 | } |
1782 | ||
bb8c093b | 1783 | int iwl3945_hw_reg_set_txpower(struct iwl3945_priv *priv, s8 power) |
b481de9c | 1784 | { |
bb8c093b | 1785 | struct iwl3945_channel_info *ch_info; |
b481de9c ZY |
1786 | s8 max_power; |
1787 | u8 a_band; | |
1788 | u8 i; | |
1789 | ||
1790 | if (priv->user_txpower_limit == power) { | |
1791 | IWL_DEBUG_POWER("Requested Tx power same as current " | |
1792 | "limit: %ddBm.\n", power); | |
1793 | return 0; | |
1794 | } | |
1795 | ||
1796 | IWL_DEBUG_POWER("Setting upper limit clamp to %ddBm.\n", power); | |
1797 | priv->user_txpower_limit = power; | |
1798 | ||
1799 | /* set up new Tx powers for each and every channel, 2.4 and 5.x */ | |
1800 | ||
1801 | for (i = 0; i < priv->channel_count; i++) { | |
1802 | ch_info = &priv->channel_info[i]; | |
1803 | a_band = is_channel_a_band(ch_info); | |
1804 | ||
1805 | /* find minimum power of all user and regulatory constraints | |
1806 | * (does not consider h/w clipping limitations) */ | |
bb8c093b | 1807 | max_power = iwl3945_hw_reg_get_ch_txpower_limit(ch_info); |
b481de9c ZY |
1808 | max_power = min(power, max_power); |
1809 | if (max_power != ch_info->curr_txpow) { | |
1810 | ch_info->curr_txpow = max_power; | |
1811 | ||
1812 | /* this considers the h/w clipping limitations */ | |
bb8c093b | 1813 | iwl3945_hw_reg_set_new_power(priv, ch_info); |
b481de9c ZY |
1814 | } |
1815 | } | |
1816 | ||
1817 | /* update txpower settings for all channels, | |
1818 | * send to NIC if associated. */ | |
1819 | is_temp_calib_needed(priv); | |
bb8c093b | 1820 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
1821 | |
1822 | return 0; | |
1823 | } | |
1824 | ||
1825 | /* will add 3945 channel switch cmd handling later */ | |
bb8c093b | 1826 | int iwl3945_hw_channel_switch(struct iwl3945_priv *priv, u16 channel) |
b481de9c ZY |
1827 | { |
1828 | return 0; | |
1829 | } | |
1830 | ||
1831 | /** | |
1832 | * iwl3945_reg_txpower_periodic - called when time to check our temperature. | |
1833 | * | |
1834 | * -- reset periodic timer | |
1835 | * -- see if temp has changed enough to warrant re-calibration ... if so: | |
1836 | * -- correct coeffs for temp (can reset temp timer) | |
1837 | * -- save this temp as "last", | |
1838 | * -- send new set of gain settings to NIC | |
1839 | * NOTE: This should continue working, even when we're not associated, | |
1840 | * so we can keep our internal table of scan powers current. */ | |
bb8c093b | 1841 | void iwl3945_reg_txpower_periodic(struct iwl3945_priv *priv) |
b481de9c ZY |
1842 | { |
1843 | /* This will kick in the "brute force" | |
bb8c093b | 1844 | * iwl3945_hw_reg_comp_txpower_temp() below */ |
b481de9c ZY |
1845 | if (!is_temp_calib_needed(priv)) |
1846 | goto reschedule; | |
1847 | ||
1848 | /* Set up a new set of temp-adjusted TxPowers, send to NIC. | |
1849 | * This is based *only* on current temperature, | |
1850 | * ignoring any previous power measurements */ | |
bb8c093b | 1851 | iwl3945_hw_reg_comp_txpower_temp(priv); |
b481de9c ZY |
1852 | |
1853 | reschedule: | |
1854 | queue_delayed_work(priv->workqueue, | |
1855 | &priv->thermal_periodic, REG_RECALIB_PERIOD * HZ); | |
1856 | } | |
1857 | ||
416e1438 | 1858 | static void iwl3945_bg_reg_txpower_periodic(struct work_struct *work) |
b481de9c | 1859 | { |
bb8c093b | 1860 | struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, |
b481de9c ZY |
1861 | thermal_periodic.work); |
1862 | ||
1863 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
1864 | return; | |
1865 | ||
1866 | mutex_lock(&priv->mutex); | |
1867 | iwl3945_reg_txpower_periodic(priv); | |
1868 | mutex_unlock(&priv->mutex); | |
1869 | } | |
1870 | ||
1871 | /** | |
bb8c093b | 1872 | * iwl3945_hw_reg_get_ch_grp_index - find the channel-group index (0-4) |
b481de9c ZY |
1873 | * for the channel. |
1874 | * | |
1875 | * This function is used when initializing channel-info structs. | |
1876 | * | |
1877 | * NOTE: These channel groups do *NOT* match the bands above! | |
1878 | * These channel groups are based on factory-tested channels; | |
1879 | * on A-band, EEPROM's "group frequency" entries represent the top | |
1880 | * channel in each group 1-4. Group 5 All B/G channels are in group 0. | |
1881 | */ | |
bb8c093b CH |
1882 | static u16 iwl3945_hw_reg_get_ch_grp_index(struct iwl3945_priv *priv, |
1883 | const struct iwl3945_channel_info *ch_info) | |
b481de9c | 1884 | { |
bb8c093b | 1885 | struct iwl3945_eeprom_txpower_group *ch_grp = &priv->eeprom.groups[0]; |
b481de9c ZY |
1886 | u8 group; |
1887 | u16 group_index = 0; /* based on factory calib frequencies */ | |
1888 | u8 grp_channel; | |
1889 | ||
1890 | /* Find the group index for the channel ... don't use index 1(?) */ | |
1891 | if (is_channel_a_band(ch_info)) { | |
1892 | for (group = 1; group < 5; group++) { | |
1893 | grp_channel = ch_grp[group].group_channel; | |
1894 | if (ch_info->channel <= grp_channel) { | |
1895 | group_index = group; | |
1896 | break; | |
1897 | } | |
1898 | } | |
1899 | /* group 4 has a few channels *above* its factory cal freq */ | |
1900 | if (group == 5) | |
1901 | group_index = 4; | |
1902 | } else | |
1903 | group_index = 0; /* 2.4 GHz, group 0 */ | |
1904 | ||
1905 | IWL_DEBUG_POWER("Chnl %d mapped to grp %d\n", ch_info->channel, | |
1906 | group_index); | |
1907 | return group_index; | |
1908 | } | |
1909 | ||
1910 | /** | |
bb8c093b | 1911 | * iwl3945_hw_reg_get_matched_power_index - Interpolate to get nominal index |
b481de9c ZY |
1912 | * |
1913 | * Interpolate to get nominal (i.e. at factory calibration temperature) index | |
1914 | * into radio/DSP gain settings table for requested power. | |
1915 | */ | |
bb8c093b | 1916 | static int iwl3945_hw_reg_get_matched_power_index(struct iwl3945_priv *priv, |
b481de9c ZY |
1917 | s8 requested_power, |
1918 | s32 setting_index, s32 *new_index) | |
1919 | { | |
bb8c093b | 1920 | const struct iwl3945_eeprom_txpower_group *chnl_grp = NULL; |
b481de9c ZY |
1921 | s32 index0, index1; |
1922 | s32 power = 2 * requested_power; | |
1923 | s32 i; | |
bb8c093b | 1924 | const struct iwl3945_eeprom_txpower_sample *samples; |
b481de9c ZY |
1925 | s32 gains0, gains1; |
1926 | s32 res; | |
1927 | s32 denominator; | |
1928 | ||
1929 | chnl_grp = &priv->eeprom.groups[setting_index]; | |
1930 | samples = chnl_grp->samples; | |
1931 | for (i = 0; i < 5; i++) { | |
1932 | if (power == samples[i].power) { | |
1933 | *new_index = samples[i].gain_index; | |
1934 | return 0; | |
1935 | } | |
1936 | } | |
1937 | ||
1938 | if (power > samples[1].power) { | |
1939 | index0 = 0; | |
1940 | index1 = 1; | |
1941 | } else if (power > samples[2].power) { | |
1942 | index0 = 1; | |
1943 | index1 = 2; | |
1944 | } else if (power > samples[3].power) { | |
1945 | index0 = 2; | |
1946 | index1 = 3; | |
1947 | } else { | |
1948 | index0 = 3; | |
1949 | index1 = 4; | |
1950 | } | |
1951 | ||
1952 | denominator = (s32) samples[index1].power - (s32) samples[index0].power; | |
1953 | if (denominator == 0) | |
1954 | return -EINVAL; | |
1955 | gains0 = (s32) samples[index0].gain_index * (1 << 19); | |
1956 | gains1 = (s32) samples[index1].gain_index * (1 << 19); | |
1957 | res = gains0 + (gains1 - gains0) * | |
1958 | ((s32) power - (s32) samples[index0].power) / denominator + | |
1959 | (1 << 18); | |
1960 | *new_index = res >> 19; | |
1961 | return 0; | |
1962 | } | |
1963 | ||
bb8c093b | 1964 | static void iwl3945_hw_reg_init_channel_groups(struct iwl3945_priv *priv) |
b481de9c ZY |
1965 | { |
1966 | u32 i; | |
1967 | s32 rate_index; | |
bb8c093b | 1968 | const struct iwl3945_eeprom_txpower_group *group; |
b481de9c ZY |
1969 | |
1970 | IWL_DEBUG_POWER("Initializing factory calib info from EEPROM\n"); | |
1971 | ||
1972 | for (i = 0; i < IWL_NUM_TX_CALIB_GROUPS; i++) { | |
1973 | s8 *clip_pwrs; /* table of power levels for each rate */ | |
1974 | s8 satur_pwr; /* saturation power for each chnl group */ | |
1975 | group = &priv->eeprom.groups[i]; | |
1976 | ||
1977 | /* sanity check on factory saturation power value */ | |
1978 | if (group->saturation_power < 40) { | |
1979 | IWL_WARNING("Error: saturation power is %d, " | |
1980 | "less than minimum expected 40\n", | |
1981 | group->saturation_power); | |
1982 | return; | |
1983 | } | |
1984 | ||
1985 | /* | |
1986 | * Derive requested power levels for each rate, based on | |
1987 | * hardware capabilities (saturation power for band). | |
1988 | * Basic value is 3dB down from saturation, with further | |
1989 | * power reductions for highest 3 data rates. These | |
1990 | * backoffs provide headroom for high rate modulation | |
1991 | * power peaks, without too much distortion (clipping). | |
1992 | */ | |
1993 | /* we'll fill in this array with h/w max power levels */ | |
1994 | clip_pwrs = (s8 *) priv->clip_groups[i].clip_powers; | |
1995 | ||
1996 | /* divide factory saturation power by 2 to find -3dB level */ | |
1997 | satur_pwr = (s8) (group->saturation_power >> 1); | |
1998 | ||
1999 | /* fill in channel group's nominal powers for each rate */ | |
2000 | for (rate_index = 0; | |
2001 | rate_index < IWL_RATE_COUNT; rate_index++, clip_pwrs++) { | |
2002 | switch (rate_index) { | |
14577f23 | 2003 | case IWL_RATE_36M_INDEX_TABLE: |
b481de9c ZY |
2004 | if (i == 0) /* B/G */ |
2005 | *clip_pwrs = satur_pwr; | |
2006 | else /* A */ | |
2007 | *clip_pwrs = satur_pwr - 5; | |
2008 | break; | |
14577f23 | 2009 | case IWL_RATE_48M_INDEX_TABLE: |
b481de9c ZY |
2010 | if (i == 0) |
2011 | *clip_pwrs = satur_pwr - 7; | |
2012 | else | |
2013 | *clip_pwrs = satur_pwr - 10; | |
2014 | break; | |
14577f23 | 2015 | case IWL_RATE_54M_INDEX_TABLE: |
b481de9c ZY |
2016 | if (i == 0) |
2017 | *clip_pwrs = satur_pwr - 9; | |
2018 | else | |
2019 | *clip_pwrs = satur_pwr - 12; | |
2020 | break; | |
2021 | default: | |
2022 | *clip_pwrs = satur_pwr; | |
2023 | break; | |
2024 | } | |
2025 | } | |
2026 | } | |
2027 | } | |
2028 | ||
2029 | /** | |
2030 | * iwl3945_txpower_set_from_eeprom - Set channel power info based on EEPROM | |
2031 | * | |
2032 | * Second pass (during init) to set up priv->channel_info | |
2033 | * | |
2034 | * Set up Tx-power settings in our channel info database for each VALID | |
2035 | * (for this geo/SKU) channel, at all Tx data rates, based on eeprom values | |
2036 | * and current temperature. | |
2037 | * | |
2038 | * Since this is based on current temperature (at init time), these values may | |
2039 | * not be valid for very long, but it gives us a starting/default point, | |
2040 | * and allows us to active (i.e. using Tx) scan. | |
2041 | * | |
2042 | * This does *not* write values to NIC, just sets up our internal table. | |
2043 | */ | |
bb8c093b | 2044 | int iwl3945_txpower_set_from_eeprom(struct iwl3945_priv *priv) |
b481de9c | 2045 | { |
bb8c093b CH |
2046 | struct iwl3945_channel_info *ch_info = NULL; |
2047 | struct iwl3945_channel_power_info *pwr_info; | |
b481de9c ZY |
2048 | int delta_index; |
2049 | u8 rate_index; | |
2050 | u8 scan_tbl_index; | |
2051 | const s8 *clip_pwrs; /* array of power levels for each rate */ | |
2052 | u8 gain, dsp_atten; | |
2053 | s8 power; | |
2054 | u8 pwr_index, base_pwr_index, a_band; | |
2055 | u8 i; | |
2056 | int temperature; | |
2057 | ||
2058 | /* save temperature reference, | |
2059 | * so we can determine next time to calibrate */ | |
bb8c093b | 2060 | temperature = iwl3945_hw_reg_txpower_get_temperature(priv); |
b481de9c ZY |
2061 | priv->last_temperature = temperature; |
2062 | ||
bb8c093b | 2063 | iwl3945_hw_reg_init_channel_groups(priv); |
b481de9c ZY |
2064 | |
2065 | /* initialize Tx power info for each and every channel, 2.4 and 5.x */ | |
2066 | for (i = 0, ch_info = priv->channel_info; i < priv->channel_count; | |
2067 | i++, ch_info++) { | |
2068 | a_band = is_channel_a_band(ch_info); | |
2069 | if (!is_channel_valid(ch_info)) | |
2070 | continue; | |
2071 | ||
2072 | /* find this channel's channel group (*not* "band") index */ | |
2073 | ch_info->group_index = | |
bb8c093b | 2074 | iwl3945_hw_reg_get_ch_grp_index(priv, ch_info); |
b481de9c ZY |
2075 | |
2076 | /* Get this chnlgrp's rate->max/clip-powers table */ | |
2077 | clip_pwrs = priv->clip_groups[ch_info->group_index].clip_powers; | |
2078 | ||
2079 | /* calculate power index *adjustment* value according to | |
2080 | * diff between current temperature and factory temperature */ | |
bb8c093b | 2081 | delta_index = iwl3945_hw_reg_adjust_power_by_temp(temperature, |
b481de9c ZY |
2082 | priv->eeprom.groups[ch_info->group_index]. |
2083 | temperature); | |
2084 | ||
2085 | IWL_DEBUG_POWER("Delta index for channel %d: %d [%d]\n", | |
2086 | ch_info->channel, delta_index, temperature + | |
2087 | IWL_TEMP_CONVERT); | |
2088 | ||
2089 | /* set tx power value for all OFDM rates */ | |
2090 | for (rate_index = 0; rate_index < IWL_OFDM_RATES; | |
2091 | rate_index++) { | |
2092 | s32 power_idx; | |
2093 | int rc; | |
2094 | ||
2095 | /* use channel group's clip-power table, | |
2096 | * but don't exceed channel's max power */ | |
2097 | s8 pwr = min(ch_info->max_power_avg, | |
2098 | clip_pwrs[rate_index]); | |
2099 | ||
2100 | pwr_info = &ch_info->power_info[rate_index]; | |
2101 | ||
2102 | /* get base (i.e. at factory-measured temperature) | |
2103 | * power table index for this rate's power */ | |
bb8c093b | 2104 | rc = iwl3945_hw_reg_get_matched_power_index(priv, pwr, |
b481de9c ZY |
2105 | ch_info->group_index, |
2106 | &power_idx); | |
2107 | if (rc) { | |
2108 | IWL_ERROR("Invalid power index\n"); | |
2109 | return rc; | |
2110 | } | |
2111 | pwr_info->base_power_index = (u8) power_idx; | |
2112 | ||
2113 | /* temperature compensate */ | |
2114 | power_idx += delta_index; | |
2115 | ||
2116 | /* stay within range of gain table */ | |
bb8c093b | 2117 | power_idx = iwl3945_hw_reg_fix_power_index(power_idx); |
b481de9c | 2118 | |
bb8c093b | 2119 | /* fill 1 OFDM rate's iwl3945_channel_power_info struct */ |
b481de9c ZY |
2120 | pwr_info->requested_power = pwr; |
2121 | pwr_info->power_table_index = (u8) power_idx; | |
2122 | pwr_info->tpc.tx_gain = | |
2123 | power_gain_table[a_band][power_idx].tx_gain; | |
2124 | pwr_info->tpc.dsp_atten = | |
2125 | power_gain_table[a_band][power_idx].dsp_atten; | |
2126 | } | |
2127 | ||
2128 | /* set tx power for CCK rates, based on OFDM 12 Mbit settings*/ | |
14577f23 | 2129 | pwr_info = &ch_info->power_info[IWL_RATE_12M_INDEX_TABLE]; |
b481de9c ZY |
2130 | power = pwr_info->requested_power + |
2131 | IWL_CCK_FROM_OFDM_POWER_DIFF; | |
2132 | pwr_index = pwr_info->power_table_index + | |
2133 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2134 | base_pwr_index = pwr_info->base_power_index + | |
2135 | IWL_CCK_FROM_OFDM_INDEX_DIFF; | |
2136 | ||
2137 | /* stay within table range */ | |
bb8c093b | 2138 | pwr_index = iwl3945_hw_reg_fix_power_index(pwr_index); |
b481de9c ZY |
2139 | gain = power_gain_table[a_band][pwr_index].tx_gain; |
2140 | dsp_atten = power_gain_table[a_band][pwr_index].dsp_atten; | |
2141 | ||
bb8c093b | 2142 | /* fill each CCK rate's iwl3945_channel_power_info structure |
b481de9c ZY |
2143 | * NOTE: All CCK-rate Txpwrs are the same for a given chnl! |
2144 | * NOTE: CCK rates start at end of OFDM rates! */ | |
14577f23 MA |
2145 | for (rate_index = 0; |
2146 | rate_index < IWL_CCK_RATES; rate_index++) { | |
2147 | pwr_info = &ch_info->power_info[rate_index+IWL_OFDM_RATES]; | |
b481de9c ZY |
2148 | pwr_info->requested_power = power; |
2149 | pwr_info->power_table_index = pwr_index; | |
2150 | pwr_info->base_power_index = base_pwr_index; | |
2151 | pwr_info->tpc.tx_gain = gain; | |
2152 | pwr_info->tpc.dsp_atten = dsp_atten; | |
2153 | } | |
2154 | ||
2155 | /* set scan tx power, 1Mbit for CCK, 6Mbit for OFDM */ | |
2156 | for (scan_tbl_index = 0; | |
2157 | scan_tbl_index < IWL_NUM_SCAN_RATES; scan_tbl_index++) { | |
2158 | s32 actual_index = (scan_tbl_index == 0) ? | |
14577f23 | 2159 | IWL_RATE_1M_INDEX_TABLE : IWL_RATE_6M_INDEX_TABLE; |
bb8c093b | 2160 | iwl3945_hw_reg_set_scan_power(priv, scan_tbl_index, |
b481de9c ZY |
2161 | actual_index, clip_pwrs, ch_info, a_band); |
2162 | } | |
2163 | } | |
2164 | ||
2165 | return 0; | |
2166 | } | |
2167 | ||
bb8c093b | 2168 | int iwl3945_hw_rxq_stop(struct iwl3945_priv *priv) |
b481de9c ZY |
2169 | { |
2170 | int rc; | |
2171 | unsigned long flags; | |
2172 | ||
2173 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 2174 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
2175 | if (rc) { |
2176 | spin_unlock_irqrestore(&priv->lock, flags); | |
2177 | return rc; | |
2178 | } | |
2179 | ||
bb8c093b CH |
2180 | iwl3945_write_direct32(priv, FH_RCSR_CONFIG(0), 0); |
2181 | rc = iwl3945_poll_direct_bit(priv, FH_RSSR_STATUS, (1 << 24), 1000); | |
b481de9c ZY |
2182 | if (rc < 0) |
2183 | IWL_ERROR("Can't stop Rx DMA.\n"); | |
2184 | ||
bb8c093b | 2185 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
2186 | spin_unlock_irqrestore(&priv->lock, flags); |
2187 | ||
2188 | return 0; | |
2189 | } | |
2190 | ||
bb8c093b | 2191 | int iwl3945_hw_tx_queue_init(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq) |
b481de9c ZY |
2192 | { |
2193 | int rc; | |
2194 | unsigned long flags; | |
2195 | int txq_id = txq->q.id; | |
2196 | ||
bb8c093b | 2197 | struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
2198 | |
2199 | shared_data->tx_base_ptr[txq_id] = cpu_to_le32((u32)txq->q.dma_addr); | |
2200 | ||
2201 | spin_lock_irqsave(&priv->lock, flags); | |
bb8c093b | 2202 | rc = iwl3945_grab_nic_access(priv); |
b481de9c ZY |
2203 | if (rc) { |
2204 | spin_unlock_irqrestore(&priv->lock, flags); | |
2205 | return rc; | |
2206 | } | |
bb8c093b CH |
2207 | iwl3945_write_direct32(priv, FH_CBCC_CTRL(txq_id), 0); |
2208 | iwl3945_write_direct32(priv, FH_CBCC_BASE(txq_id), 0); | |
b481de9c | 2209 | |
bb8c093b | 2210 | iwl3945_write_direct32(priv, FH_TCSR_CONFIG(txq_id), |
b481de9c ZY |
2211 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT | |
2212 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF | | |
2213 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD | | |
2214 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL | | |
2215 | ALM_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE); | |
bb8c093b | 2216 | iwl3945_release_nic_access(priv); |
b481de9c ZY |
2217 | |
2218 | /* fake read to flush all prev. writes */ | |
bb8c093b | 2219 | iwl3945_read32(priv, FH_TSSR_CBB_BASE); |
b481de9c ZY |
2220 | spin_unlock_irqrestore(&priv->lock, flags); |
2221 | ||
2222 | return 0; | |
2223 | } | |
2224 | ||
bb8c093b | 2225 | int iwl3945_hw_get_rx_read(struct iwl3945_priv *priv) |
b481de9c | 2226 | { |
bb8c093b | 2227 | struct iwl3945_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
2228 | |
2229 | return le32_to_cpu(shared_data->rx_read_ptr[0]); | |
2230 | } | |
2231 | ||
2232 | /** | |
2233 | * iwl3945_init_hw_rate_table - Initialize the hardware rate fallback table | |
2234 | */ | |
bb8c093b | 2235 | int iwl3945_init_hw_rate_table(struct iwl3945_priv *priv) |
b481de9c | 2236 | { |
14577f23 | 2237 | int rc, i, index, prev_index; |
bb8c093b | 2238 | struct iwl3945_rate_scaling_cmd rate_cmd = { |
b481de9c ZY |
2239 | .reserved = {0, 0, 0}, |
2240 | }; | |
bb8c093b | 2241 | struct iwl3945_rate_scaling_info *table = rate_cmd.table; |
b481de9c | 2242 | |
bb8c093b CH |
2243 | for (i = 0; i < ARRAY_SIZE(iwl3945_rates); i++) { |
2244 | index = iwl3945_rates[i].table_rs_index; | |
14577f23 MA |
2245 | |
2246 | table[index].rate_n_flags = | |
bb8c093b | 2247 | iwl3945_hw_set_rate_n_flags(iwl3945_rates[i].plcp, 0); |
14577f23 | 2248 | table[index].try_cnt = priv->retry_rate; |
bb8c093b CH |
2249 | prev_index = iwl3945_get_prev_ieee_rate(i); |
2250 | table[index].next_rate_index = iwl3945_rates[prev_index].table_rs_index; | |
b481de9c ZY |
2251 | } |
2252 | ||
2253 | switch (priv->phymode) { | |
2254 | case MODE_IEEE80211A: | |
2255 | IWL_DEBUG_RATE("Select A mode rate scale\n"); | |
2256 | /* If one of the following CCK rates is used, | |
2257 | * have it fall back to the 6M OFDM rate */ | |
14577f23 | 2258 | for (i = IWL_RATE_1M_INDEX_TABLE; i <= IWL_RATE_11M_INDEX_TABLE; i++) |
bb8c093b | 2259 | table[i].next_rate_index = iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; |
b481de9c ZY |
2260 | |
2261 | /* Don't fall back to CCK rates */ | |
14577f23 | 2262 | table[IWL_RATE_12M_INDEX_TABLE].next_rate_index = IWL_RATE_9M_INDEX_TABLE; |
b481de9c ZY |
2263 | |
2264 | /* Don't drop out of OFDM rates */ | |
14577f23 | 2265 | table[IWL_RATE_6M_INDEX_TABLE].next_rate_index = |
bb8c093b | 2266 | iwl3945_rates[IWL_FIRST_OFDM_RATE].table_rs_index; |
b481de9c ZY |
2267 | break; |
2268 | ||
2269 | case MODE_IEEE80211B: | |
2270 | IWL_DEBUG_RATE("Select B mode rate scale\n"); | |
2271 | /* If an OFDM rate is used, have it fall back to the | |
2272 | * 1M CCK rates */ | |
14577f23 | 2273 | for (i = IWL_RATE_6M_INDEX_TABLE; i <= IWL_RATE_54M_INDEX_TABLE; i++) |
bb8c093b | 2274 | table[i].next_rate_index = iwl3945_rates[IWL_FIRST_CCK_RATE].table_rs_index; |
b481de9c ZY |
2275 | |
2276 | /* CCK shouldn't fall back to OFDM... */ | |
14577f23 | 2277 | table[IWL_RATE_11M_INDEX_TABLE].next_rate_index = IWL_RATE_5M_INDEX_TABLE; |
b481de9c ZY |
2278 | break; |
2279 | ||
2280 | default: | |
2281 | IWL_DEBUG_RATE("Select G mode rate scale\n"); | |
2282 | break; | |
2283 | } | |
2284 | ||
2285 | /* Update the rate scaling for control frame Tx */ | |
2286 | rate_cmd.table_id = 0; | |
bb8c093b | 2287 | rc = iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2288 | &rate_cmd); |
2289 | if (rc) | |
2290 | return rc; | |
2291 | ||
2292 | /* Update the rate scaling for data frame Tx */ | |
2293 | rate_cmd.table_id = 1; | |
bb8c093b | 2294 | return iwl3945_send_cmd_pdu(priv, REPLY_RATE_SCALE, sizeof(rate_cmd), |
b481de9c ZY |
2295 | &rate_cmd); |
2296 | } | |
2297 | ||
796083cb | 2298 | /* Called when initializing driver */ |
bb8c093b | 2299 | int iwl3945_hw_set_hw_setting(struct iwl3945_priv *priv) |
b481de9c ZY |
2300 | { |
2301 | memset((void *)&priv->hw_setting, 0, | |
bb8c093b | 2302 | sizeof(struct iwl3945_driver_hw_info)); |
b481de9c ZY |
2303 | |
2304 | priv->hw_setting.shared_virt = | |
2305 | pci_alloc_consistent(priv->pci_dev, | |
bb8c093b | 2306 | sizeof(struct iwl3945_shared), |
b481de9c ZY |
2307 | &priv->hw_setting.shared_phys); |
2308 | ||
2309 | if (!priv->hw_setting.shared_virt) { | |
2310 | IWL_ERROR("failed to allocate pci memory\n"); | |
2311 | mutex_unlock(&priv->mutex); | |
2312 | return -ENOMEM; | |
2313 | } | |
2314 | ||
2315 | priv->hw_setting.ac_queue_count = AC_NUM; | |
9ee1ba47 RR |
2316 | priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE; |
2317 | priv->hw_setting.max_pkt_size = 2342; | |
bb8c093b | 2318 | priv->hw_setting.tx_cmd_len = sizeof(struct iwl3945_tx_cmd); |
b481de9c ZY |
2319 | priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE; |
2320 | priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG; | |
b481de9c ZY |
2321 | priv->hw_setting.max_stations = IWL3945_STATION_COUNT; |
2322 | priv->hw_setting.bcast_sta_id = IWL3945_BROADCAST_ID; | |
2323 | return 0; | |
2324 | } | |
2325 | ||
bb8c093b CH |
2326 | unsigned int iwl3945_hw_get_beacon_cmd(struct iwl3945_priv *priv, |
2327 | struct iwl3945_frame *frame, u8 rate) | |
b481de9c | 2328 | { |
bb8c093b | 2329 | struct iwl3945_tx_beacon_cmd *tx_beacon_cmd; |
b481de9c ZY |
2330 | unsigned int frame_size; |
2331 | ||
bb8c093b | 2332 | tx_beacon_cmd = (struct iwl3945_tx_beacon_cmd *)&frame->u; |
b481de9c ZY |
2333 | memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); |
2334 | ||
2335 | tx_beacon_cmd->tx.sta_id = IWL3945_BROADCAST_ID; | |
2336 | tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2337 | ||
bb8c093b | 2338 | frame_size = iwl3945_fill_beacon_frame(priv, |
b481de9c | 2339 | tx_beacon_cmd->frame, |
bb8c093b | 2340 | iwl3945_broadcast_addr, |
b481de9c ZY |
2341 | sizeof(frame->u) - sizeof(*tx_beacon_cmd)); |
2342 | ||
2343 | BUG_ON(frame_size > MAX_MPDU_SIZE); | |
2344 | tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); | |
2345 | ||
2346 | tx_beacon_cmd->tx.rate = rate; | |
2347 | tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | | |
2348 | TX_CMD_FLG_TSF_MSK); | |
2349 | ||
14577f23 MA |
2350 | /* supp_rates[0] == OFDM start at IWL_FIRST_OFDM_RATE*/ |
2351 | tx_beacon_cmd->tx.supp_rates[0] = | |
2352 | (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; | |
2353 | ||
b481de9c | 2354 | tx_beacon_cmd->tx.supp_rates[1] = |
14577f23 | 2355 | (IWL_CCK_BASIC_RATES_MASK & 0xF); |
b481de9c | 2356 | |
bb8c093b | 2357 | return (sizeof(struct iwl3945_tx_beacon_cmd) + frame_size); |
b481de9c ZY |
2358 | } |
2359 | ||
bb8c093b | 2360 | void iwl3945_hw_rx_handler_setup(struct iwl3945_priv *priv) |
b481de9c ZY |
2361 | { |
2362 | priv->rx_handlers[REPLY_3945_RX] = iwl3945_rx_reply_rx; | |
2363 | } | |
2364 | ||
bb8c093b | 2365 | void iwl3945_hw_setup_deferred_work(struct iwl3945_priv *priv) |
b481de9c ZY |
2366 | { |
2367 | INIT_DELAYED_WORK(&priv->thermal_periodic, | |
2368 | iwl3945_bg_reg_txpower_periodic); | |
2369 | } | |
2370 | ||
bb8c093b | 2371 | void iwl3945_hw_cancel_deferred_work(struct iwl3945_priv *priv) |
b481de9c ZY |
2372 | { |
2373 | cancel_delayed_work(&priv->thermal_periodic); | |
2374 | } | |
2375 | ||
bb8c093b | 2376 | struct pci_device_id iwl3945_hw_card_ids[] = { |
3567c11d ZY |
2377 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4222)}, |
2378 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4227)}, | |
b481de9c ZY |
2379 | {0} |
2380 | }; | |
2381 | ||
796083cb BC |
2382 | /* |
2383 | * Clear the OWNER_MSK, to establish driver (instead of uCode running on | |
2384 | * embedded controller) as EEPROM reader; each read is a series of pulses | |
2385 | * to/from the EEPROM chip, not a single event, so even reads could conflict | |
2386 | * if they weren't arbitrated by some ownership mechanism. Here, the driver | |
2387 | * simply claims ownership, which should be safe when this function is called | |
2388 | * (i.e. before loading uCode!). | |
2389 | */ | |
bb8c093b | 2390 | inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv) |
b481de9c | 2391 | { |
bb8c093b | 2392 | _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK); |
b481de9c ZY |
2393 | return 0; |
2394 | } | |
2395 | ||
bb8c093b | 2396 | MODULE_DEVICE_TABLE(pci, iwl3945_hw_card_ids); |