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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
eb7ae89c | 3 | * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. |
b481de9c ZY |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
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 <net/mac80211.h> | |
b481de9c | 38 | #include <linux/etherdevice.h> |
12342c47 | 39 | #include <asm/unaligned.h> |
b481de9c | 40 | |
6bc913bd | 41 | #include "iwl-eeprom.h" |
82b9a121 | 42 | #include "iwl-core.h" |
b481de9c | 43 | #include "iwl-4965.h" |
3395f6e9 | 44 | #include "iwl-io.h" |
b481de9c ZY |
45 | #include "iwl-helpers.h" |
46 | ||
1ea87396 AK |
47 | /* module parameters */ |
48 | static struct iwl_mod_params iwl4965_mod_params = { | |
49 | .num_of_queues = IWL_MAX_NUM_QUEUES, | |
50 | .enable_qos = 1, | |
51 | .amsdu_size_8K = 1, | |
52 | /* the rest are 0 by default */ | |
53 | }; | |
54 | ||
c79dd5b5 | 55 | static void iwl4965_hw_card_show_info(struct iwl_priv *priv); |
416e1438 | 56 | |
b481de9c ZY |
57 | #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \ |
58 | [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \ | |
59 | IWL_RATE_SISO_##s##M_PLCP, \ | |
60 | IWL_RATE_MIMO_##s##M_PLCP, \ | |
61 | IWL_RATE_##r##M_IEEE, \ | |
62 | IWL_RATE_##ip##M_INDEX, \ | |
63 | IWL_RATE_##in##M_INDEX, \ | |
64 | IWL_RATE_##rp##M_INDEX, \ | |
65 | IWL_RATE_##rn##M_INDEX, \ | |
66 | IWL_RATE_##pp##M_INDEX, \ | |
67 | IWL_RATE_##np##M_INDEX } | |
68 | ||
69 | /* | |
70 | * Parameter order: | |
71 | * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate | |
72 | * | |
73 | * If there isn't a valid next or previous rate then INV is used which | |
74 | * maps to IWL_RATE_INVALID | |
75 | * | |
76 | */ | |
bb8c093b | 77 | const struct iwl4965_rate_info iwl4965_rates[IWL_RATE_COUNT] = { |
b481de9c ZY |
78 | IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */ |
79 | IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */ | |
80 | IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */ | |
81 | IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */ | |
82 | IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */ | |
83 | IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */ | |
84 | IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */ | |
85 | IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */ | |
86 | IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */ | |
87 | IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */ | |
88 | IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */ | |
89 | IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */ | |
90 | IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */ | |
91 | }; | |
92 | ||
fe01b477 RR |
93 | #ifdef CONFIG_IWL4965_HT |
94 | ||
95 | static const u16 default_tid_to_tx_fifo[] = { | |
96 | IWL_TX_FIFO_AC1, | |
97 | IWL_TX_FIFO_AC0, | |
98 | IWL_TX_FIFO_AC0, | |
99 | IWL_TX_FIFO_AC1, | |
100 | IWL_TX_FIFO_AC2, | |
101 | IWL_TX_FIFO_AC2, | |
102 | IWL_TX_FIFO_AC3, | |
103 | IWL_TX_FIFO_AC3, | |
104 | IWL_TX_FIFO_NONE, | |
105 | IWL_TX_FIFO_NONE, | |
106 | IWL_TX_FIFO_NONE, | |
107 | IWL_TX_FIFO_NONE, | |
108 | IWL_TX_FIFO_NONE, | |
109 | IWL_TX_FIFO_NONE, | |
110 | IWL_TX_FIFO_NONE, | |
111 | IWL_TX_FIFO_NONE, | |
112 | IWL_TX_FIFO_AC3 | |
113 | }; | |
114 | ||
115 | #endif /*CONFIG_IWL4965_HT */ | |
116 | ||
bf85ea4f AK |
117 | static int iwl4965_init_drv(struct iwl_priv *priv) |
118 | { | |
119 | int ret; | |
120 | int i; | |
121 | ||
1ea87396 | 122 | priv->antenna = (enum iwl4965_antenna)priv->cfg->mod_params->antenna; |
bf85ea4f AK |
123 | priv->retry_rate = 1; |
124 | priv->ibss_beacon = NULL; | |
125 | ||
126 | spin_lock_init(&priv->lock); | |
127 | spin_lock_init(&priv->power_data.lock); | |
128 | spin_lock_init(&priv->sta_lock); | |
129 | spin_lock_init(&priv->hcmd_lock); | |
130 | spin_lock_init(&priv->lq_mngr.lock); | |
131 | ||
132 | for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) | |
133 | INIT_LIST_HEAD(&priv->ibss_mac_hash[i]); | |
134 | ||
135 | INIT_LIST_HEAD(&priv->free_frames); | |
136 | ||
137 | mutex_init(&priv->mutex); | |
138 | ||
139 | /* Clear the driver's (not device's) station table */ | |
140 | iwlcore_clear_stations_table(priv); | |
141 | ||
142 | priv->data_retry_limit = -1; | |
143 | priv->ieee_channels = NULL; | |
144 | priv->ieee_rates = NULL; | |
145 | priv->band = IEEE80211_BAND_2GHZ; | |
146 | ||
147 | priv->iw_mode = IEEE80211_IF_TYPE_STA; | |
148 | ||
149 | priv->use_ant_b_for_management_frame = 1; /* start with ant B */ | |
150 | priv->valid_antenna = 0x7; /* assume all 3 connected */ | |
151 | priv->ps_mode = IWL_MIMO_PS_NONE; | |
152 | ||
153 | /* Choose which receivers/antennas to use */ | |
154 | iwl4965_set_rxon_chain(priv); | |
155 | ||
156 | iwlcore_reset_qos(priv); | |
157 | ||
158 | priv->qos_data.qos_active = 0; | |
159 | priv->qos_data.qos_cap.val = 0; | |
160 | ||
161 | iwlcore_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6); | |
162 | ||
163 | priv->rates_mask = IWL_RATES_MASK; | |
164 | /* If power management is turned on, default to AC mode */ | |
165 | priv->power_mode = IWL_POWER_AC; | |
166 | priv->user_txpower_limit = IWL_DEFAULT_TX_POWER; | |
167 | ||
168 | ret = iwl_init_channel_map(priv); | |
169 | if (ret) { | |
170 | IWL_ERROR("initializing regulatory failed: %d\n", ret); | |
171 | goto err; | |
172 | } | |
173 | ||
174 | ret = iwl4965_init_geos(priv); | |
175 | if (ret) { | |
176 | IWL_ERROR("initializing geos failed: %d\n", ret); | |
177 | goto err_free_channel_map; | |
178 | } | |
179 | ||
bf85ea4f AK |
180 | ret = ieee80211_register_hw(priv->hw); |
181 | if (ret) { | |
182 | IWL_ERROR("Failed to register network device (error %d)\n", | |
183 | ret); | |
184 | goto err_free_geos; | |
185 | } | |
186 | ||
187 | priv->hw->conf.beacon_int = 100; | |
188 | priv->mac80211_registered = 1; | |
189 | ||
190 | return 0; | |
191 | ||
192 | err_free_geos: | |
193 | iwl4965_free_geos(priv); | |
194 | err_free_channel_map: | |
195 | iwl_free_channel_map(priv); | |
196 | err: | |
197 | return ret; | |
198 | } | |
199 | ||
b481de9c ZY |
200 | static int is_fat_channel(__le32 rxon_flags) |
201 | { | |
202 | return (rxon_flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) || | |
203 | (rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK); | |
204 | } | |
205 | ||
c79dd5b5 | 206 | static u8 is_single_stream(struct iwl_priv *priv) |
b481de9c | 207 | { |
c8b0e6e1 | 208 | #ifdef CONFIG_IWL4965_HT |
fd105e79 RR |
209 | if (!priv->current_ht_config.is_ht || |
210 | (priv->current_ht_config.supp_mcs_set[1] == 0) || | |
b481de9c ZY |
211 | (priv->ps_mode == IWL_MIMO_PS_STATIC)) |
212 | return 1; | |
213 | #else | |
214 | return 1; | |
c8b0e6e1 | 215 | #endif /*CONFIG_IWL4965_HT */ |
b481de9c ZY |
216 | return 0; |
217 | } | |
218 | ||
17744ff6 TW |
219 | int iwl4965_hwrate_to_plcp_idx(u32 rate_n_flags) |
220 | { | |
221 | int idx = 0; | |
222 | ||
223 | /* 4965 HT rate format */ | |
224 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
225 | idx = (rate_n_flags & 0xff); | |
226 | ||
227 | if (idx >= IWL_RATE_MIMO_6M_PLCP) | |
228 | idx = idx - IWL_RATE_MIMO_6M_PLCP; | |
229 | ||
230 | idx += IWL_FIRST_OFDM_RATE; | |
231 | /* skip 9M not supported in ht*/ | |
232 | if (idx >= IWL_RATE_9M_INDEX) | |
233 | idx += 1; | |
234 | if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE)) | |
235 | return idx; | |
236 | ||
237 | /* 4965 legacy rate format, search for match in table */ | |
238 | } else { | |
239 | for (idx = 0; idx < ARRAY_SIZE(iwl4965_rates); idx++) | |
240 | if (iwl4965_rates[idx].plcp == (rate_n_flags & 0xFF)) | |
241 | return idx; | |
242 | } | |
243 | ||
244 | return -1; | |
245 | } | |
246 | ||
4c424e4c RR |
247 | /** |
248 | * translate ucode response to mac80211 tx status control values | |
249 | */ | |
c79dd5b5 | 250 | void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
4c424e4c RR |
251 | struct ieee80211_tx_control *control) |
252 | { | |
253 | int rate_index; | |
254 | ||
255 | control->antenna_sel_tx = | |
256 | ((rate_n_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_A_POS); | |
257 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
258 | control->flags |= IEEE80211_TXCTL_OFDM_HT; | |
259 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
260 | control->flags |= IEEE80211_TXCTL_GREEN_FIELD; | |
261 | if (rate_n_flags & RATE_MCS_FAT_MSK) | |
262 | control->flags |= IEEE80211_TXCTL_40_MHZ_WIDTH; | |
263 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
264 | control->flags |= IEEE80211_TXCTL_DUP_DATA; | |
265 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
266 | control->flags |= IEEE80211_TXCTL_SHORT_GI; | |
267 | /* since iwl4965_hwrate_to_plcp_idx is band indifferent, we always use | |
268 | * IEEE80211_BAND_2GHZ band as it contains all the rates */ | |
269 | rate_index = iwl4965_hwrate_to_plcp_idx(rate_n_flags); | |
270 | if (rate_index == -1) | |
271 | control->tx_rate = NULL; | |
272 | else | |
273 | control->tx_rate = | |
274 | &priv->bands[IEEE80211_BAND_2GHZ].bitrates[rate_index]; | |
275 | } | |
17744ff6 | 276 | |
b481de9c ZY |
277 | /* |
278 | * Determine how many receiver/antenna chains to use. | |
279 | * More provides better reception via diversity. Fewer saves power. | |
280 | * MIMO (dual stream) requires at least 2, but works better with 3. | |
281 | * This does not determine *which* chains to use, just how many. | |
282 | */ | |
c79dd5b5 | 283 | static int iwl4965_get_rx_chain_counter(struct iwl_priv *priv, |
b481de9c ZY |
284 | u8 *idle_state, u8 *rx_state) |
285 | { | |
286 | u8 is_single = is_single_stream(priv); | |
287 | u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1; | |
288 | ||
289 | /* # of Rx chains to use when expecting MIMO. */ | |
290 | if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC))) | |
291 | *rx_state = 2; | |
292 | else | |
293 | *rx_state = 3; | |
294 | ||
295 | /* # Rx chains when idling and maybe trying to save power */ | |
296 | switch (priv->ps_mode) { | |
297 | case IWL_MIMO_PS_STATIC: | |
298 | case IWL_MIMO_PS_DYNAMIC: | |
299 | *idle_state = (is_cam) ? 2 : 1; | |
300 | break; | |
301 | case IWL_MIMO_PS_NONE: | |
302 | *idle_state = (is_cam) ? *rx_state : 1; | |
303 | break; | |
304 | default: | |
305 | *idle_state = 1; | |
306 | break; | |
307 | } | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
c79dd5b5 | 312 | int iwl4965_hw_rxq_stop(struct iwl_priv *priv) |
b481de9c ZY |
313 | { |
314 | int rc; | |
315 | unsigned long flags; | |
316 | ||
317 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 318 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
319 | if (rc) { |
320 | spin_unlock_irqrestore(&priv->lock, flags); | |
321 | return rc; | |
322 | } | |
323 | ||
8b6eaea8 | 324 | /* stop Rx DMA */ |
3395f6e9 TW |
325 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
326 | rc = iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, | |
b481de9c ZY |
327 | (1 << 24), 1000); |
328 | if (rc < 0) | |
329 | IWL_ERROR("Can't stop Rx DMA.\n"); | |
330 | ||
3395f6e9 | 331 | iwl_release_nic_access(priv); |
b481de9c ZY |
332 | spin_unlock_irqrestore(&priv->lock, flags); |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
c79dd5b5 | 337 | u8 iwl4965_hw_find_station(struct iwl_priv *priv, const u8 *addr) |
b481de9c ZY |
338 | { |
339 | int i; | |
340 | int start = 0; | |
341 | int ret = IWL_INVALID_STATION; | |
342 | unsigned long flags; | |
0795af57 | 343 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
344 | |
345 | if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) || | |
346 | (priv->iw_mode == IEEE80211_IF_TYPE_AP)) | |
347 | start = IWL_STA_ID; | |
348 | ||
349 | if (is_broadcast_ether_addr(addr)) | |
a4062b8f | 350 | return priv->hw_setting.bcast_sta_id; |
b481de9c ZY |
351 | |
352 | spin_lock_irqsave(&priv->sta_lock, flags); | |
353 | for (i = start; i < priv->hw_setting.max_stations; i++) | |
354 | if ((priv->stations[i].used) && | |
355 | (!compare_ether_addr | |
356 | (priv->stations[i].sta.sta.addr, addr))) { | |
357 | ret = i; | |
358 | goto out; | |
359 | } | |
360 | ||
a50e2e3f | 361 | IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n", |
0795af57 | 362 | print_mac(mac, addr), priv->num_stations); |
b481de9c ZY |
363 | |
364 | out: | |
365 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
366 | return ret; | |
367 | } | |
368 | ||
c79dd5b5 | 369 | static int iwl4965_nic_set_pwr_src(struct iwl_priv *priv, int pwr_max) |
b481de9c | 370 | { |
d8609652 | 371 | int ret; |
b481de9c ZY |
372 | unsigned long flags; |
373 | ||
374 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 375 | ret = iwl_grab_nic_access(priv); |
d8609652 | 376 | if (ret) { |
b481de9c | 377 | spin_unlock_irqrestore(&priv->lock, flags); |
d8609652 | 378 | return ret; |
b481de9c ZY |
379 | } |
380 | ||
381 | if (!pwr_max) { | |
382 | u32 val; | |
383 | ||
d8609652 | 384 | ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE, |
b481de9c ZY |
385 | &val); |
386 | ||
387 | if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) | |
3395f6e9 | 388 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
389 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
390 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
391 | } else | |
3395f6e9 | 392 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
b481de9c ZY |
393 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
394 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
395 | ||
3395f6e9 | 396 | iwl_release_nic_access(priv); |
b481de9c ZY |
397 | spin_unlock_irqrestore(&priv->lock, flags); |
398 | ||
d8609652 | 399 | return ret; |
b481de9c ZY |
400 | } |
401 | ||
c79dd5b5 | 402 | static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl4965_rx_queue *rxq) |
b481de9c ZY |
403 | { |
404 | int rc; | |
405 | unsigned long flags; | |
9ee1ba47 | 406 | unsigned int rb_size; |
b481de9c ZY |
407 | |
408 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 409 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
410 | if (rc) { |
411 | spin_unlock_irqrestore(&priv->lock, flags); | |
412 | return rc; | |
413 | } | |
414 | ||
1ea87396 | 415 | if (priv->cfg->mod_params->amsdu_size_8K) |
9ee1ba47 RR |
416 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; |
417 | else | |
418 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; | |
419 | ||
8b6eaea8 | 420 | /* Stop Rx DMA */ |
3395f6e9 | 421 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
b481de9c | 422 | |
8b6eaea8 | 423 | /* Reset driver's Rx queue write index */ |
3395f6e9 | 424 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); |
8b6eaea8 CB |
425 | |
426 | /* Tell device where to find RBD circular buffer in DRAM */ | |
3395f6e9 TW |
427 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
428 | rxq->dma_addr >> 8); | |
b481de9c | 429 | |
8b6eaea8 | 430 | /* Tell device where in DRAM to update its Rx status */ |
3395f6e9 TW |
431 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, |
432 | (priv->hw_setting.shared_phys + | |
433 | offsetof(struct iwl4965_shared, val0)) >> 4); | |
b481de9c | 434 | |
8b6eaea8 | 435 | /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */ |
3395f6e9 TW |
436 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, |
437 | FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | | |
438 | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | | |
439 | rb_size | | |
b481de9c | 440 | /*0x10 << 4 | */ |
3395f6e9 | 441 | (RX_QUEUE_SIZE_LOG << |
b481de9c ZY |
442 | FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT)); |
443 | ||
444 | /* | |
3395f6e9 | 445 | * iwl_write32(priv,CSR_INT_COAL_REG,0); |
b481de9c ZY |
446 | */ |
447 | ||
3395f6e9 | 448 | iwl_release_nic_access(priv); |
b481de9c ZY |
449 | spin_unlock_irqrestore(&priv->lock, flags); |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
8b6eaea8 | 454 | /* Tell 4965 where to find the "keep warm" buffer */ |
c79dd5b5 | 455 | static int iwl4965_kw_init(struct iwl_priv *priv) |
b481de9c ZY |
456 | { |
457 | unsigned long flags; | |
458 | int rc; | |
459 | ||
460 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 461 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
462 | if (rc) |
463 | goto out; | |
464 | ||
3395f6e9 | 465 | iwl_write_direct32(priv, IWL_FH_KW_MEM_ADDR_REG, |
b481de9c | 466 | priv->kw.dma_addr >> 4); |
3395f6e9 | 467 | iwl_release_nic_access(priv); |
b481de9c ZY |
468 | out: |
469 | spin_unlock_irqrestore(&priv->lock, flags); | |
470 | return rc; | |
471 | } | |
472 | ||
c79dd5b5 | 473 | static int iwl4965_kw_alloc(struct iwl_priv *priv) |
b481de9c ZY |
474 | { |
475 | struct pci_dev *dev = priv->pci_dev; | |
bb8c093b | 476 | struct iwl4965_kw *kw = &priv->kw; |
b481de9c ZY |
477 | |
478 | kw->size = IWL4965_KW_SIZE; /* TBW need set somewhere else */ | |
479 | kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr); | |
480 | if (!kw->v_addr) | |
481 | return -ENOMEM; | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
8b6eaea8 CB |
486 | /** |
487 | * iwl4965_kw_free - Free the "keep warm" buffer | |
488 | */ | |
c79dd5b5 | 489 | static void iwl4965_kw_free(struct iwl_priv *priv) |
b481de9c ZY |
490 | { |
491 | struct pci_dev *dev = priv->pci_dev; | |
bb8c093b | 492 | struct iwl4965_kw *kw = &priv->kw; |
b481de9c ZY |
493 | |
494 | if (kw->v_addr) { | |
495 | pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr); | |
496 | memset(kw, 0, sizeof(*kw)); | |
497 | } | |
498 | } | |
499 | ||
500 | /** | |
501 | * iwl4965_txq_ctx_reset - Reset TX queue context | |
502 | * Destroys all DMA structures and initialise them again | |
503 | * | |
504 | * @param priv | |
505 | * @return error code | |
506 | */ | |
c79dd5b5 | 507 | static int iwl4965_txq_ctx_reset(struct iwl_priv *priv) |
b481de9c ZY |
508 | { |
509 | int rc = 0; | |
510 | int txq_id, slots_num; | |
511 | unsigned long flags; | |
512 | ||
513 | iwl4965_kw_free(priv); | |
514 | ||
8b6eaea8 | 515 | /* Free all tx/cmd queues and keep-warm buffer */ |
bb8c093b | 516 | iwl4965_hw_txq_ctx_free(priv); |
b481de9c | 517 | |
8b6eaea8 | 518 | /* Alloc keep-warm buffer */ |
b481de9c ZY |
519 | rc = iwl4965_kw_alloc(priv); |
520 | if (rc) { | |
521 | IWL_ERROR("Keep Warm allocation failed"); | |
522 | goto error_kw; | |
523 | } | |
524 | ||
525 | spin_lock_irqsave(&priv->lock, flags); | |
526 | ||
3395f6e9 | 527 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
528 | if (unlikely(rc)) { |
529 | IWL_ERROR("TX reset failed"); | |
530 | spin_unlock_irqrestore(&priv->lock, flags); | |
531 | goto error_reset; | |
532 | } | |
533 | ||
8b6eaea8 | 534 | /* Turn off all Tx DMA channels */ |
3395f6e9 TW |
535 | iwl_write_prph(priv, KDR_SCD_TXFACT, 0); |
536 | iwl_release_nic_access(priv); | |
b481de9c ZY |
537 | spin_unlock_irqrestore(&priv->lock, flags); |
538 | ||
8b6eaea8 | 539 | /* Tell 4965 where to find the keep-warm buffer */ |
b481de9c ZY |
540 | rc = iwl4965_kw_init(priv); |
541 | if (rc) { | |
542 | IWL_ERROR("kw_init failed\n"); | |
543 | goto error_reset; | |
544 | } | |
545 | ||
8b6eaea8 CB |
546 | /* Alloc and init all (default 16) Tx queues, |
547 | * including the command queue (#4) */ | |
b481de9c ZY |
548 | for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) { |
549 | slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ? | |
550 | TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS; | |
bb8c093b | 551 | rc = iwl4965_tx_queue_init(priv, &priv->txq[txq_id], slots_num, |
b481de9c ZY |
552 | txq_id); |
553 | if (rc) { | |
554 | IWL_ERROR("Tx %d queue init failed\n", txq_id); | |
555 | goto error; | |
556 | } | |
557 | } | |
558 | ||
559 | return rc; | |
560 | ||
561 | error: | |
bb8c093b | 562 | iwl4965_hw_txq_ctx_free(priv); |
b481de9c ZY |
563 | error_reset: |
564 | iwl4965_kw_free(priv); | |
565 | error_kw: | |
566 | return rc; | |
567 | } | |
568 | ||
c79dd5b5 | 569 | int iwl4965_hw_nic_init(struct iwl_priv *priv) |
b481de9c ZY |
570 | { |
571 | int rc; | |
572 | unsigned long flags; | |
bb8c093b | 573 | struct iwl4965_rx_queue *rxq = &priv->rxq; |
b481de9c ZY |
574 | u8 rev_id; |
575 | u32 val; | |
576 | u8 val_link; | |
577 | ||
bb8c093b | 578 | iwl4965_power_init_handle(priv); |
b481de9c ZY |
579 | |
580 | /* nic_init */ | |
581 | spin_lock_irqsave(&priv->lock, flags); | |
582 | ||
3395f6e9 | 583 | iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, |
b481de9c ZY |
584 | CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
585 | ||
3395f6e9 TW |
586 | iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
587 | rc = iwl_poll_bit(priv, CSR_GP_CNTRL, | |
b481de9c ZY |
588 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
589 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); | |
590 | if (rc < 0) { | |
591 | spin_unlock_irqrestore(&priv->lock, flags); | |
592 | IWL_DEBUG_INFO("Failed to init the card\n"); | |
593 | return rc; | |
594 | } | |
595 | ||
3395f6e9 | 596 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
597 | if (rc) { |
598 | spin_unlock_irqrestore(&priv->lock, flags); | |
599 | return rc; | |
600 | } | |
601 | ||
3395f6e9 | 602 | iwl_read_prph(priv, APMG_CLK_CTRL_REG); |
b481de9c | 603 | |
3395f6e9 TW |
604 | iwl_write_prph(priv, APMG_CLK_CTRL_REG, |
605 | APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT); | |
606 | iwl_read_prph(priv, APMG_CLK_CTRL_REG); | |
b481de9c ZY |
607 | |
608 | udelay(20); | |
609 | ||
3395f6e9 TW |
610 | iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
611 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
b481de9c | 612 | |
3395f6e9 TW |
613 | iwl_release_nic_access(priv); |
614 | iwl_write32(priv, CSR_INT_COALESCING, 512 / 32); | |
b481de9c ZY |
615 | spin_unlock_irqrestore(&priv->lock, flags); |
616 | ||
617 | /* Determine HW type */ | |
618 | rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id); | |
619 | if (rc) | |
620 | return rc; | |
621 | ||
622 | IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id); | |
623 | ||
624 | iwl4965_nic_set_pwr_src(priv, 1); | |
625 | spin_lock_irqsave(&priv->lock, flags); | |
626 | ||
627 | if ((rev_id & 0x80) == 0x80 && (rev_id & 0x7f) < 8) { | |
628 | pci_read_config_dword(priv->pci_dev, PCI_REG_WUM8, &val); | |
629 | /* Enable No Snoop field */ | |
630 | pci_write_config_dword(priv->pci_dev, PCI_REG_WUM8, | |
631 | val & ~(1 << 11)); | |
632 | } | |
633 | ||
634 | spin_unlock_irqrestore(&priv->lock, flags); | |
635 | ||
b481de9c ZY |
636 | if (priv->eeprom.calib_version < EEPROM_TX_POWER_VERSION_NEW) { |
637 | IWL_ERROR("Older EEPROM detected! Aborting.\n"); | |
638 | return -EINVAL; | |
639 | } | |
640 | ||
641 | pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link); | |
642 | ||
643 | /* disable L1 entry -- workaround for pre-B1 */ | |
644 | pci_write_config_byte(priv->pci_dev, PCI_LINK_CTRL, val_link & ~0x02); | |
645 | ||
646 | spin_lock_irqsave(&priv->lock, flags); | |
647 | ||
648 | /* set CSR_HW_CONFIG_REG for uCode use */ | |
649 | ||
3395f6e9 TW |
650 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
651 | CSR49_HW_IF_CONFIG_REG_BIT_4965_R | | |
652 | CSR49_HW_IF_CONFIG_REG_BIT_RADIO_SI | | |
653 | CSR49_HW_IF_CONFIG_REG_BIT_MAC_SI); | |
b481de9c | 654 | |
3395f6e9 | 655 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
656 | if (rc < 0) { |
657 | spin_unlock_irqrestore(&priv->lock, flags); | |
658 | IWL_DEBUG_INFO("Failed to init the card\n"); | |
659 | return rc; | |
660 | } | |
661 | ||
3395f6e9 TW |
662 | iwl_read_prph(priv, APMG_PS_CTRL_REG); |
663 | iwl_set_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); | |
b481de9c | 664 | udelay(5); |
3395f6e9 | 665 | iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG, APMG_PS_CTRL_VAL_RESET_REQ); |
b481de9c | 666 | |
3395f6e9 | 667 | iwl_release_nic_access(priv); |
b481de9c ZY |
668 | spin_unlock_irqrestore(&priv->lock, flags); |
669 | ||
bb8c093b | 670 | iwl4965_hw_card_show_info(priv); |
b481de9c ZY |
671 | |
672 | /* end nic_init */ | |
673 | ||
674 | /* Allocate the RX queue, or reset if it is already allocated */ | |
675 | if (!rxq->bd) { | |
bb8c093b | 676 | rc = iwl4965_rx_queue_alloc(priv); |
b481de9c ZY |
677 | if (rc) { |
678 | IWL_ERROR("Unable to initialize Rx queue\n"); | |
679 | return -ENOMEM; | |
680 | } | |
681 | } else | |
bb8c093b | 682 | iwl4965_rx_queue_reset(priv, rxq); |
b481de9c | 683 | |
bb8c093b | 684 | iwl4965_rx_replenish(priv); |
b481de9c ZY |
685 | |
686 | iwl4965_rx_init(priv, rxq); | |
687 | ||
688 | spin_lock_irqsave(&priv->lock, flags); | |
689 | ||
690 | rxq->need_update = 1; | |
bb8c093b | 691 | iwl4965_rx_queue_update_write_ptr(priv, rxq); |
b481de9c ZY |
692 | |
693 | spin_unlock_irqrestore(&priv->lock, flags); | |
8b6eaea8 CB |
694 | |
695 | /* Allocate and init all Tx and Command queues */ | |
b481de9c ZY |
696 | rc = iwl4965_txq_ctx_reset(priv); |
697 | if (rc) | |
698 | return rc; | |
699 | ||
700 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE) | |
701 | IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n"); | |
702 | ||
703 | if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE) | |
704 | IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n"); | |
705 | ||
706 | set_bit(STATUS_INIT, &priv->status); | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
c79dd5b5 | 711 | int iwl4965_hw_nic_stop_master(struct iwl_priv *priv) |
b481de9c ZY |
712 | { |
713 | int rc = 0; | |
714 | u32 reg_val; | |
715 | unsigned long flags; | |
716 | ||
717 | spin_lock_irqsave(&priv->lock, flags); | |
718 | ||
719 | /* set stop master bit */ | |
3395f6e9 | 720 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
b481de9c | 721 | |
3395f6e9 | 722 | reg_val = iwl_read32(priv, CSR_GP_CNTRL); |
b481de9c ZY |
723 | |
724 | if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE == | |
725 | (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE)) | |
726 | IWL_DEBUG_INFO("Card in power save, master is already " | |
727 | "stopped\n"); | |
728 | else { | |
3395f6e9 | 729 | rc = iwl_poll_bit(priv, CSR_RESET, |
b481de9c ZY |
730 | CSR_RESET_REG_FLAG_MASTER_DISABLED, |
731 | CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); | |
732 | if (rc < 0) { | |
733 | spin_unlock_irqrestore(&priv->lock, flags); | |
734 | return rc; | |
735 | } | |
736 | } | |
737 | ||
738 | spin_unlock_irqrestore(&priv->lock, flags); | |
739 | IWL_DEBUG_INFO("stop master\n"); | |
740 | ||
741 | return rc; | |
742 | } | |
743 | ||
8b6eaea8 CB |
744 | /** |
745 | * iwl4965_hw_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory | |
746 | */ | |
c79dd5b5 | 747 | void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv) |
b481de9c ZY |
748 | { |
749 | ||
750 | int txq_id; | |
751 | unsigned long flags; | |
752 | ||
8b6eaea8 | 753 | /* Stop each Tx DMA channel, and wait for it to be idle */ |
b481de9c ZY |
754 | for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) { |
755 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 756 | if (iwl_grab_nic_access(priv)) { |
b481de9c ZY |
757 | spin_unlock_irqrestore(&priv->lock, flags); |
758 | continue; | |
759 | } | |
760 | ||
3395f6e9 TW |
761 | iwl_write_direct32(priv, |
762 | IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), 0x0); | |
763 | iwl_poll_direct_bit(priv, IWL_FH_TSSR_TX_STATUS_REG, | |
764 | IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE | |
765 | (txq_id), 200); | |
766 | iwl_release_nic_access(priv); | |
b481de9c ZY |
767 | spin_unlock_irqrestore(&priv->lock, flags); |
768 | } | |
769 | ||
8b6eaea8 | 770 | /* Deallocate memory for all Tx queues */ |
bb8c093b | 771 | iwl4965_hw_txq_ctx_free(priv); |
b481de9c ZY |
772 | } |
773 | ||
c79dd5b5 | 774 | int iwl4965_hw_nic_reset(struct iwl_priv *priv) |
b481de9c ZY |
775 | { |
776 | int rc = 0; | |
777 | unsigned long flags; | |
778 | ||
bb8c093b | 779 | iwl4965_hw_nic_stop_master(priv); |
b481de9c ZY |
780 | |
781 | spin_lock_irqsave(&priv->lock, flags); | |
782 | ||
3395f6e9 | 783 | iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
b481de9c ZY |
784 | |
785 | udelay(10); | |
786 | ||
3395f6e9 TW |
787 | iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
788 | rc = iwl_poll_bit(priv, CSR_RESET, | |
b481de9c ZY |
789 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, |
790 | CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25); | |
791 | ||
792 | udelay(10); | |
793 | ||
3395f6e9 | 794 | rc = iwl_grab_nic_access(priv); |
b481de9c | 795 | if (!rc) { |
3395f6e9 TW |
796 | iwl_write_prph(priv, APMG_CLK_EN_REG, |
797 | APMG_CLK_VAL_DMA_CLK_RQT | | |
798 | APMG_CLK_VAL_BSM_CLK_RQT); | |
b481de9c ZY |
799 | |
800 | udelay(10); | |
801 | ||
3395f6e9 TW |
802 | iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
803 | APMG_PCIDEV_STT_VAL_L1_ACT_DIS); | |
b481de9c | 804 | |
3395f6e9 | 805 | iwl_release_nic_access(priv); |
b481de9c ZY |
806 | } |
807 | ||
808 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
809 | wake_up_interruptible(&priv->wait_command_queue); | |
810 | ||
811 | spin_unlock_irqrestore(&priv->lock, flags); | |
812 | ||
813 | return rc; | |
814 | ||
815 | } | |
816 | ||
817 | #define REG_RECALIB_PERIOD (60) | |
818 | ||
819 | /** | |
820 | * iwl4965_bg_statistics_periodic - Timer callback to queue statistics | |
821 | * | |
822 | * This callback is provided in order to queue the statistics_work | |
823 | * in work_queue context (v. softirq) | |
824 | * | |
825 | * This timer function is continually reset to execute within | |
826 | * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION | |
827 | * was received. We need to ensure we receive the statistics in order | |
828 | * to update the temperature used for calibrating the TXPOWER. However, | |
829 | * we can't send the statistics command from softirq context (which | |
830 | * is the context which timers run at) so we have to queue off the | |
831 | * statistics_work to actually send the command to the hardware. | |
832 | */ | |
833 | static void iwl4965_bg_statistics_periodic(unsigned long data) | |
834 | { | |
c79dd5b5 | 835 | struct iwl_priv *priv = (struct iwl_priv *)data; |
b481de9c ZY |
836 | |
837 | queue_work(priv->workqueue, &priv->statistics_work); | |
838 | } | |
839 | ||
840 | /** | |
841 | * iwl4965_bg_statistics_work - Send the statistics request to the hardware. | |
842 | * | |
bb8c093b | 843 | * This is queued by iwl4965_bg_statistics_periodic. |
b481de9c ZY |
844 | */ |
845 | static void iwl4965_bg_statistics_work(struct work_struct *work) | |
846 | { | |
c79dd5b5 | 847 | struct iwl_priv *priv = container_of(work, struct iwl_priv, |
b481de9c ZY |
848 | statistics_work); |
849 | ||
850 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
851 | return; | |
852 | ||
853 | mutex_lock(&priv->mutex); | |
bb8c093b | 854 | iwl4965_send_statistics_request(priv); |
b481de9c ZY |
855 | mutex_unlock(&priv->mutex); |
856 | } | |
857 | ||
858 | #define CT_LIMIT_CONST 259 | |
859 | #define TM_CT_KILL_THRESHOLD 110 | |
860 | ||
c79dd5b5 | 861 | void iwl4965_rf_kill_ct_config(struct iwl_priv *priv) |
b481de9c | 862 | { |
bb8c093b | 863 | struct iwl4965_ct_kill_config cmd; |
b481de9c ZY |
864 | u32 R1, R2, R3; |
865 | u32 temp_th; | |
866 | u32 crit_temperature; | |
867 | unsigned long flags; | |
857485c0 | 868 | int ret = 0; |
b481de9c ZY |
869 | |
870 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 871 | iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, |
b481de9c ZY |
872 | CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); |
873 | spin_unlock_irqrestore(&priv->lock, flags); | |
874 | ||
875 | if (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK) { | |
876 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]); | |
877 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]); | |
878 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]); | |
879 | } else { | |
880 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]); | |
881 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]); | |
882 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]); | |
883 | } | |
884 | ||
885 | temp_th = CELSIUS_TO_KELVIN(TM_CT_KILL_THRESHOLD); | |
886 | ||
887 | crit_temperature = ((temp_th * (R3-R1))/CT_LIMIT_CONST) + R2; | |
888 | cmd.critical_temperature_R = cpu_to_le32(crit_temperature); | |
857485c0 TW |
889 | ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, |
890 | sizeof(cmd), &cmd); | |
891 | if (ret) | |
b481de9c ZY |
892 | IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n"); |
893 | else | |
894 | IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n"); | |
895 | } | |
896 | ||
c8b0e6e1 | 897 | #ifdef CONFIG_IWL4965_SENSITIVITY |
b481de9c ZY |
898 | |
899 | /* "false alarms" are signals that our DSP tries to lock onto, | |
900 | * but then determines that they are either noise, or transmissions | |
901 | * from a distant wireless network (also "noise", really) that get | |
902 | * "stepped on" by stronger transmissions within our own network. | |
903 | * This algorithm attempts to set a sensitivity level that is high | |
904 | * enough to receive all of our own network traffic, but not so | |
905 | * high that our DSP gets too busy trying to lock onto non-network | |
906 | * activity/noise. */ | |
c79dd5b5 | 907 | static int iwl4965_sens_energy_cck(struct iwl_priv *priv, |
b481de9c ZY |
908 | u32 norm_fa, |
909 | u32 rx_enable_time, | |
910 | struct statistics_general_data *rx_info) | |
911 | { | |
912 | u32 max_nrg_cck = 0; | |
913 | int i = 0; | |
914 | u8 max_silence_rssi = 0; | |
915 | u32 silence_ref = 0; | |
916 | u8 silence_rssi_a = 0; | |
917 | u8 silence_rssi_b = 0; | |
918 | u8 silence_rssi_c = 0; | |
919 | u32 val; | |
920 | ||
921 | /* "false_alarms" values below are cross-multiplications to assess the | |
922 | * numbers of false alarms within the measured period of actual Rx | |
923 | * (Rx is off when we're txing), vs the min/max expected false alarms | |
924 | * (some should be expected if rx is sensitive enough) in a | |
925 | * hypothetical listening period of 200 time units (TU), 204.8 msec: | |
926 | * | |
927 | * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time | |
928 | * | |
929 | * */ | |
930 | u32 false_alarms = norm_fa * 200 * 1024; | |
931 | u32 max_false_alarms = MAX_FA_CCK * rx_enable_time; | |
932 | u32 min_false_alarms = MIN_FA_CCK * rx_enable_time; | |
bb8c093b | 933 | struct iwl4965_sensitivity_data *data = NULL; |
b481de9c ZY |
934 | |
935 | data = &(priv->sensitivity_data); | |
936 | ||
937 | data->nrg_auto_corr_silence_diff = 0; | |
938 | ||
939 | /* Find max silence rssi among all 3 receivers. | |
940 | * This is background noise, which may include transmissions from other | |
941 | * networks, measured during silence before our network's beacon */ | |
942 | silence_rssi_a = (u8)((rx_info->beacon_silence_rssi_a & | |
8a1b0245 | 943 | ALL_BAND_FILTER) >> 8); |
b481de9c | 944 | silence_rssi_b = (u8)((rx_info->beacon_silence_rssi_b & |
8a1b0245 | 945 | ALL_BAND_FILTER) >> 8); |
b481de9c | 946 | silence_rssi_c = (u8)((rx_info->beacon_silence_rssi_c & |
8a1b0245 | 947 | ALL_BAND_FILTER) >> 8); |
b481de9c ZY |
948 | |
949 | val = max(silence_rssi_b, silence_rssi_c); | |
950 | max_silence_rssi = max(silence_rssi_a, (u8) val); | |
951 | ||
952 | /* Store silence rssi in 20-beacon history table */ | |
953 | data->nrg_silence_rssi[data->nrg_silence_idx] = max_silence_rssi; | |
954 | data->nrg_silence_idx++; | |
955 | if (data->nrg_silence_idx >= NRG_NUM_PREV_STAT_L) | |
956 | data->nrg_silence_idx = 0; | |
957 | ||
958 | /* Find max silence rssi across 20 beacon history */ | |
959 | for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) { | |
960 | val = data->nrg_silence_rssi[i]; | |
961 | silence_ref = max(silence_ref, val); | |
962 | } | |
963 | IWL_DEBUG_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n", | |
964 | silence_rssi_a, silence_rssi_b, silence_rssi_c, | |
965 | silence_ref); | |
966 | ||
967 | /* Find max rx energy (min value!) among all 3 receivers, | |
968 | * measured during beacon frame. | |
969 | * Save it in 10-beacon history table. */ | |
970 | i = data->nrg_energy_idx; | |
971 | val = min(rx_info->beacon_energy_b, rx_info->beacon_energy_c); | |
972 | data->nrg_value[i] = min(rx_info->beacon_energy_a, val); | |
973 | ||
974 | data->nrg_energy_idx++; | |
975 | if (data->nrg_energy_idx >= 10) | |
976 | data->nrg_energy_idx = 0; | |
977 | ||
978 | /* Find min rx energy (max value) across 10 beacon history. | |
979 | * This is the minimum signal level that we want to receive well. | |
980 | * Add backoff (margin so we don't miss slightly lower energy frames). | |
981 | * This establishes an upper bound (min value) for energy threshold. */ | |
982 | max_nrg_cck = data->nrg_value[0]; | |
983 | for (i = 1; i < 10; i++) | |
984 | max_nrg_cck = (u32) max(max_nrg_cck, (data->nrg_value[i])); | |
985 | max_nrg_cck += 6; | |
986 | ||
987 | IWL_DEBUG_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n", | |
988 | rx_info->beacon_energy_a, rx_info->beacon_energy_b, | |
989 | rx_info->beacon_energy_c, max_nrg_cck - 6); | |
990 | ||
991 | /* Count number of consecutive beacons with fewer-than-desired | |
992 | * false alarms. */ | |
993 | if (false_alarms < min_false_alarms) | |
994 | data->num_in_cck_no_fa++; | |
995 | else | |
996 | data->num_in_cck_no_fa = 0; | |
997 | IWL_DEBUG_CALIB("consecutive bcns with few false alarms = %u\n", | |
998 | data->num_in_cck_no_fa); | |
999 | ||
1000 | /* If we got too many false alarms this time, reduce sensitivity */ | |
1001 | if (false_alarms > max_false_alarms) { | |
1002 | IWL_DEBUG_CALIB("norm FA %u > max FA %u\n", | |
1003 | false_alarms, max_false_alarms); | |
1004 | IWL_DEBUG_CALIB("... reducing sensitivity\n"); | |
1005 | data->nrg_curr_state = IWL_FA_TOO_MANY; | |
1006 | ||
1007 | if (data->auto_corr_cck > AUTO_CORR_MAX_TH_CCK) { | |
1008 | /* Store for "fewer than desired" on later beacon */ | |
1009 | data->nrg_silence_ref = silence_ref; | |
1010 | ||
1011 | /* increase energy threshold (reduce nrg value) | |
1012 | * to decrease sensitivity */ | |
1013 | if (data->nrg_th_cck > (NRG_MAX_CCK + NRG_STEP_CCK)) | |
1014 | data->nrg_th_cck = data->nrg_th_cck | |
1015 | - NRG_STEP_CCK; | |
1016 | } | |
1017 | ||
1018 | /* increase auto_corr values to decrease sensitivity */ | |
1019 | if (data->auto_corr_cck < AUTO_CORR_MAX_TH_CCK) | |
1020 | data->auto_corr_cck = AUTO_CORR_MAX_TH_CCK + 1; | |
1021 | else { | |
1022 | val = data->auto_corr_cck + AUTO_CORR_STEP_CCK; | |
1023 | data->auto_corr_cck = min((u32)AUTO_CORR_MAX_CCK, val); | |
1024 | } | |
1025 | val = data->auto_corr_cck_mrc + AUTO_CORR_STEP_CCK; | |
1026 | data->auto_corr_cck_mrc = min((u32)AUTO_CORR_MAX_CCK_MRC, val); | |
1027 | ||
1028 | /* Else if we got fewer than desired, increase sensitivity */ | |
1029 | } else if (false_alarms < min_false_alarms) { | |
1030 | data->nrg_curr_state = IWL_FA_TOO_FEW; | |
1031 | ||
1032 | /* Compare silence level with silence level for most recent | |
1033 | * healthy number or too many false alarms */ | |
1034 | data->nrg_auto_corr_silence_diff = (s32)data->nrg_silence_ref - | |
1035 | (s32)silence_ref; | |
1036 | ||
1037 | IWL_DEBUG_CALIB("norm FA %u < min FA %u, silence diff %d\n", | |
1038 | false_alarms, min_false_alarms, | |
1039 | data->nrg_auto_corr_silence_diff); | |
1040 | ||
1041 | /* Increase value to increase sensitivity, but only if: | |
1042 | * 1a) previous beacon did *not* have *too many* false alarms | |
1043 | * 1b) AND there's a significant difference in Rx levels | |
1044 | * from a previous beacon with too many, or healthy # FAs | |
1045 | * OR 2) We've seen a lot of beacons (100) with too few | |
1046 | * false alarms */ | |
1047 | if ((data->nrg_prev_state != IWL_FA_TOO_MANY) && | |
1048 | ((data->nrg_auto_corr_silence_diff > NRG_DIFF) || | |
1049 | (data->num_in_cck_no_fa > MAX_NUMBER_CCK_NO_FA))) { | |
1050 | ||
1051 | IWL_DEBUG_CALIB("... increasing sensitivity\n"); | |
1052 | /* Increase nrg value to increase sensitivity */ | |
1053 | val = data->nrg_th_cck + NRG_STEP_CCK; | |
1054 | data->nrg_th_cck = min((u32)NRG_MIN_CCK, val); | |
1055 | ||
1056 | /* Decrease auto_corr values to increase sensitivity */ | |
1057 | val = data->auto_corr_cck - AUTO_CORR_STEP_CCK; | |
1058 | data->auto_corr_cck = max((u32)AUTO_CORR_MIN_CCK, val); | |
1059 | ||
1060 | val = data->auto_corr_cck_mrc - AUTO_CORR_STEP_CCK; | |
1061 | data->auto_corr_cck_mrc = | |
1062 | max((u32)AUTO_CORR_MIN_CCK_MRC, val); | |
1063 | ||
1064 | } else | |
1065 | IWL_DEBUG_CALIB("... but not changing sensitivity\n"); | |
1066 | ||
1067 | /* Else we got a healthy number of false alarms, keep status quo */ | |
1068 | } else { | |
1069 | IWL_DEBUG_CALIB(" FA in safe zone\n"); | |
1070 | data->nrg_curr_state = IWL_FA_GOOD_RANGE; | |
1071 | ||
1072 | /* Store for use in "fewer than desired" with later beacon */ | |
1073 | data->nrg_silence_ref = silence_ref; | |
1074 | ||
1075 | /* If previous beacon had too many false alarms, | |
1076 | * give it some extra margin by reducing sensitivity again | |
1077 | * (but don't go below measured energy of desired Rx) */ | |
1078 | if (IWL_FA_TOO_MANY == data->nrg_prev_state) { | |
1079 | IWL_DEBUG_CALIB("... increasing margin\n"); | |
1080 | data->nrg_th_cck -= NRG_MARGIN; | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /* Make sure the energy threshold does not go above the measured | |
1085 | * energy of the desired Rx signals (reduced by backoff margin), | |
1086 | * or else we might start missing Rx frames. | |
1087 | * Lower value is higher energy, so we use max()! | |
1088 | */ | |
1089 | data->nrg_th_cck = max(max_nrg_cck, data->nrg_th_cck); | |
1090 | IWL_DEBUG_CALIB("new nrg_th_cck %u\n", data->nrg_th_cck); | |
1091 | ||
1092 | data->nrg_prev_state = data->nrg_curr_state; | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | ||
c79dd5b5 | 1098 | static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv, |
b481de9c ZY |
1099 | u32 norm_fa, |
1100 | u32 rx_enable_time) | |
1101 | { | |
1102 | u32 val; | |
1103 | u32 false_alarms = norm_fa * 200 * 1024; | |
1104 | u32 max_false_alarms = MAX_FA_OFDM * rx_enable_time; | |
1105 | u32 min_false_alarms = MIN_FA_OFDM * rx_enable_time; | |
bb8c093b | 1106 | struct iwl4965_sensitivity_data *data = NULL; |
b481de9c ZY |
1107 | |
1108 | data = &(priv->sensitivity_data); | |
1109 | ||
1110 | /* If we got too many false alarms this time, reduce sensitivity */ | |
1111 | if (false_alarms > max_false_alarms) { | |
1112 | ||
1113 | IWL_DEBUG_CALIB("norm FA %u > max FA %u)\n", | |
1114 | false_alarms, max_false_alarms); | |
1115 | ||
1116 | val = data->auto_corr_ofdm + AUTO_CORR_STEP_OFDM; | |
1117 | data->auto_corr_ofdm = | |
1118 | min((u32)AUTO_CORR_MAX_OFDM, val); | |
1119 | ||
1120 | val = data->auto_corr_ofdm_mrc + AUTO_CORR_STEP_OFDM; | |
1121 | data->auto_corr_ofdm_mrc = | |
1122 | min((u32)AUTO_CORR_MAX_OFDM_MRC, val); | |
1123 | ||
1124 | val = data->auto_corr_ofdm_x1 + AUTO_CORR_STEP_OFDM; | |
1125 | data->auto_corr_ofdm_x1 = | |
1126 | min((u32)AUTO_CORR_MAX_OFDM_X1, val); | |
1127 | ||
1128 | val = data->auto_corr_ofdm_mrc_x1 + AUTO_CORR_STEP_OFDM; | |
1129 | data->auto_corr_ofdm_mrc_x1 = | |
1130 | min((u32)AUTO_CORR_MAX_OFDM_MRC_X1, val); | |
1131 | } | |
1132 | ||
1133 | /* Else if we got fewer than desired, increase sensitivity */ | |
1134 | else if (false_alarms < min_false_alarms) { | |
1135 | ||
1136 | IWL_DEBUG_CALIB("norm FA %u < min FA %u\n", | |
1137 | false_alarms, min_false_alarms); | |
1138 | ||
1139 | val = data->auto_corr_ofdm - AUTO_CORR_STEP_OFDM; | |
1140 | data->auto_corr_ofdm = | |
1141 | max((u32)AUTO_CORR_MIN_OFDM, val); | |
1142 | ||
1143 | val = data->auto_corr_ofdm_mrc - AUTO_CORR_STEP_OFDM; | |
1144 | data->auto_corr_ofdm_mrc = | |
1145 | max((u32)AUTO_CORR_MIN_OFDM_MRC, val); | |
1146 | ||
1147 | val = data->auto_corr_ofdm_x1 - AUTO_CORR_STEP_OFDM; | |
1148 | data->auto_corr_ofdm_x1 = | |
1149 | max((u32)AUTO_CORR_MIN_OFDM_X1, val); | |
1150 | ||
1151 | val = data->auto_corr_ofdm_mrc_x1 - AUTO_CORR_STEP_OFDM; | |
1152 | data->auto_corr_ofdm_mrc_x1 = | |
1153 | max((u32)AUTO_CORR_MIN_OFDM_MRC_X1, val); | |
1154 | } | |
1155 | ||
1156 | else | |
1157 | IWL_DEBUG_CALIB("min FA %u < norm FA %u < max FA %u OK\n", | |
1158 | min_false_alarms, false_alarms, max_false_alarms); | |
1159 | ||
1160 | return 0; | |
1161 | } | |
1162 | ||
c79dd5b5 | 1163 | static int iwl4965_sensitivity_callback(struct iwl_priv *priv, |
857485c0 | 1164 | struct iwl_cmd *cmd, struct sk_buff *skb) |
b481de9c ZY |
1165 | { |
1166 | /* We didn't cache the SKB; let the caller free it */ | |
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */ | |
c79dd5b5 | 1171 | static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags) |
b481de9c | 1172 | { |
bb8c093b CH |
1173 | struct iwl4965_sensitivity_cmd cmd ; |
1174 | struct iwl4965_sensitivity_data *data = NULL; | |
857485c0 | 1175 | struct iwl_host_cmd cmd_out = { |
b481de9c | 1176 | .id = SENSITIVITY_CMD, |
bb8c093b | 1177 | .len = sizeof(struct iwl4965_sensitivity_cmd), |
b481de9c ZY |
1178 | .meta.flags = flags, |
1179 | .data = &cmd, | |
1180 | }; | |
857485c0 | 1181 | int ret; |
b481de9c ZY |
1182 | |
1183 | data = &(priv->sensitivity_data); | |
1184 | ||
1185 | memset(&cmd, 0, sizeof(cmd)); | |
1186 | ||
1187 | cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX] = | |
1188 | cpu_to_le16((u16)data->auto_corr_ofdm); | |
1189 | cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX] = | |
1190 | cpu_to_le16((u16)data->auto_corr_ofdm_mrc); | |
1191 | cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX] = | |
1192 | cpu_to_le16((u16)data->auto_corr_ofdm_x1); | |
1193 | cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX] = | |
1194 | cpu_to_le16((u16)data->auto_corr_ofdm_mrc_x1); | |
1195 | ||
1196 | cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX] = | |
1197 | cpu_to_le16((u16)data->auto_corr_cck); | |
1198 | cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX] = | |
1199 | cpu_to_le16((u16)data->auto_corr_cck_mrc); | |
1200 | ||
1201 | cmd.table[HD_MIN_ENERGY_CCK_DET_INDEX] = | |
1202 | cpu_to_le16((u16)data->nrg_th_cck); | |
1203 | cmd.table[HD_MIN_ENERGY_OFDM_DET_INDEX] = | |
1204 | cpu_to_le16((u16)data->nrg_th_ofdm); | |
1205 | ||
1206 | cmd.table[HD_BARKER_CORR_TH_ADD_MIN_INDEX] = | |
1207 | __constant_cpu_to_le16(190); | |
1208 | cmd.table[HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX] = | |
1209 | __constant_cpu_to_le16(390); | |
1210 | cmd.table[HD_OFDM_ENERGY_TH_IN_INDEX] = | |
1211 | __constant_cpu_to_le16(62); | |
1212 | ||
1213 | IWL_DEBUG_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n", | |
1214 | data->auto_corr_ofdm, data->auto_corr_ofdm_mrc, | |
1215 | data->auto_corr_ofdm_x1, data->auto_corr_ofdm_mrc_x1, | |
1216 | data->nrg_th_ofdm); | |
1217 | ||
1218 | IWL_DEBUG_CALIB("cck: ac %u mrc %u thresh %u\n", | |
1219 | data->auto_corr_cck, data->auto_corr_cck_mrc, | |
1220 | data->nrg_th_cck); | |
1221 | ||
f7d09d7c | 1222 | /* Update uCode's "work" table, and copy it to DSP */ |
b481de9c ZY |
1223 | cmd.control = SENSITIVITY_CMD_CONTROL_WORK_TABLE; |
1224 | ||
1225 | if (flags & CMD_ASYNC) | |
bb8c093b | 1226 | cmd_out.meta.u.callback = iwl4965_sensitivity_callback; |
b481de9c ZY |
1227 | |
1228 | /* Don't send command to uCode if nothing has changed */ | |
1229 | if (!memcmp(&cmd.table[0], &(priv->sensitivity_tbl[0]), | |
1230 | sizeof(u16)*HD_TABLE_SIZE)) { | |
1231 | IWL_DEBUG_CALIB("No change in SENSITIVITY_CMD\n"); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | /* Copy table for comparison next time */ | |
1236 | memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]), | |
1237 | sizeof(u16)*HD_TABLE_SIZE); | |
1238 | ||
857485c0 TW |
1239 | ret = iwl_send_cmd(priv, &cmd_out); |
1240 | if (ret) | |
1241 | IWL_ERROR("SENSITIVITY_CMD failed\n"); | |
b481de9c | 1242 | |
857485c0 | 1243 | return ret; |
b481de9c ZY |
1244 | } |
1245 | ||
c79dd5b5 | 1246 | void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force) |
b481de9c | 1247 | { |
bb8c093b | 1248 | struct iwl4965_sensitivity_data *data = NULL; |
857485c0 TW |
1249 | int i; |
1250 | int ret = 0; | |
b481de9c ZY |
1251 | |
1252 | IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n"); | |
1253 | ||
1254 | if (force) | |
1255 | memset(&(priv->sensitivity_tbl[0]), 0, | |
1256 | sizeof(u16)*HD_TABLE_SIZE); | |
1257 | ||
1258 | /* Clear driver's sensitivity algo data */ | |
1259 | data = &(priv->sensitivity_data); | |
bb8c093b | 1260 | memset(data, 0, sizeof(struct iwl4965_sensitivity_data)); |
b481de9c ZY |
1261 | |
1262 | data->num_in_cck_no_fa = 0; | |
1263 | data->nrg_curr_state = IWL_FA_TOO_MANY; | |
1264 | data->nrg_prev_state = IWL_FA_TOO_MANY; | |
1265 | data->nrg_silence_ref = 0; | |
1266 | data->nrg_silence_idx = 0; | |
1267 | data->nrg_energy_idx = 0; | |
1268 | ||
1269 | for (i = 0; i < 10; i++) | |
1270 | data->nrg_value[i] = 0; | |
1271 | ||
1272 | for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) | |
1273 | data->nrg_silence_rssi[i] = 0; | |
1274 | ||
1275 | data->auto_corr_ofdm = 90; | |
1276 | data->auto_corr_ofdm_mrc = 170; | |
1277 | data->auto_corr_ofdm_x1 = 105; | |
1278 | data->auto_corr_ofdm_mrc_x1 = 220; | |
1279 | data->auto_corr_cck = AUTO_CORR_CCK_MIN_VAL_DEF; | |
1280 | data->auto_corr_cck_mrc = 200; | |
1281 | data->nrg_th_cck = 100; | |
1282 | data->nrg_th_ofdm = 100; | |
1283 | ||
1284 | data->last_bad_plcp_cnt_ofdm = 0; | |
1285 | data->last_fa_cnt_ofdm = 0; | |
1286 | data->last_bad_plcp_cnt_cck = 0; | |
1287 | data->last_fa_cnt_cck = 0; | |
1288 | ||
1289 | /* Clear prior Sensitivity command data to force send to uCode */ | |
1290 | if (force) | |
1291 | memset(&(priv->sensitivity_tbl[0]), 0, | |
1292 | sizeof(u16)*HD_TABLE_SIZE); | |
1293 | ||
857485c0 TW |
1294 | ret |= iwl4965_sensitivity_write(priv, flags); |
1295 | IWL_DEBUG_CALIB("<<return 0x%X\n", ret); | |
b481de9c ZY |
1296 | |
1297 | return; | |
1298 | } | |
1299 | ||
1300 | ||
1301 | /* Reset differential Rx gains in NIC to prepare for chain noise calibration. | |
1302 | * Called after every association, but this runs only once! | |
1303 | * ... once chain noise is calibrated the first time, it's good forever. */ | |
c79dd5b5 | 1304 | void iwl4965_chain_noise_reset(struct iwl_priv *priv) |
b481de9c | 1305 | { |
bb8c093b | 1306 | struct iwl4965_chain_noise_data *data = NULL; |
b481de9c ZY |
1307 | |
1308 | data = &(priv->chain_noise_data); | |
bb8c093b CH |
1309 | if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl4965_is_associated(priv)) { |
1310 | struct iwl4965_calibration_cmd cmd; | |
b481de9c ZY |
1311 | |
1312 | memset(&cmd, 0, sizeof(cmd)); | |
1313 | cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD; | |
1314 | cmd.diff_gain_a = 0; | |
1315 | cmd.diff_gain_b = 0; | |
1316 | cmd.diff_gain_c = 0; | |
e5472978 TW |
1317 | iwl_send_cmd_pdu_async(priv, REPLY_PHY_CALIBRATION_CMD, |
1318 | sizeof(cmd), &cmd, NULL); | |
b481de9c ZY |
1319 | msleep(4); |
1320 | data->state = IWL_CHAIN_NOISE_ACCUMULATE; | |
1321 | IWL_DEBUG_CALIB("Run chain_noise_calibrate\n"); | |
1322 | } | |
1323 | return; | |
1324 | } | |
1325 | ||
1326 | /* | |
1327 | * Accumulate 20 beacons of signal and noise statistics for each of | |
1328 | * 3 receivers/antennas/rx-chains, then figure out: | |
1329 | * 1) Which antennas are connected. | |
1330 | * 2) Differential rx gain settings to balance the 3 receivers. | |
1331 | */ | |
c79dd5b5 | 1332 | static void iwl4965_noise_calibration(struct iwl_priv *priv, |
bb8c093b | 1333 | struct iwl4965_notif_statistics *stat_resp) |
b481de9c | 1334 | { |
bb8c093b | 1335 | struct iwl4965_chain_noise_data *data = NULL; |
857485c0 | 1336 | int ret = 0; |
b481de9c ZY |
1337 | |
1338 | u32 chain_noise_a; | |
1339 | u32 chain_noise_b; | |
1340 | u32 chain_noise_c; | |
1341 | u32 chain_sig_a; | |
1342 | u32 chain_sig_b; | |
1343 | u32 chain_sig_c; | |
1344 | u32 average_sig[NUM_RX_CHAINS] = {INITIALIZATION_VALUE}; | |
1345 | u32 average_noise[NUM_RX_CHAINS] = {INITIALIZATION_VALUE}; | |
1346 | u32 max_average_sig; | |
1347 | u16 max_average_sig_antenna_i; | |
1348 | u32 min_average_noise = MIN_AVERAGE_NOISE_MAX_VALUE; | |
1349 | u16 min_average_noise_antenna_i = INITIALIZATION_VALUE; | |
1350 | u16 i = 0; | |
1351 | u16 chan_num = INITIALIZATION_VALUE; | |
1352 | u32 band = INITIALIZATION_VALUE; | |
1353 | u32 active_chains = 0; | |
1354 | unsigned long flags; | |
1355 | struct statistics_rx_non_phy *rx_info = &(stat_resp->rx.general); | |
1356 | ||
1357 | data = &(priv->chain_noise_data); | |
1358 | ||
1359 | /* Accumulate just the first 20 beacons after the first association, | |
1360 | * then we're done forever. */ | |
1361 | if (data->state != IWL_CHAIN_NOISE_ACCUMULATE) { | |
1362 | if (data->state == IWL_CHAIN_NOISE_ALIVE) | |
1363 | IWL_DEBUG_CALIB("Wait for noise calib reset\n"); | |
1364 | return; | |
1365 | } | |
1366 | ||
1367 | spin_lock_irqsave(&priv->lock, flags); | |
1368 | if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { | |
1369 | IWL_DEBUG_CALIB(" << Interference data unavailable\n"); | |
1370 | spin_unlock_irqrestore(&priv->lock, flags); | |
1371 | return; | |
1372 | } | |
1373 | ||
1374 | band = (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) ? 0 : 1; | |
1375 | chan_num = le16_to_cpu(priv->staging_rxon.channel); | |
1376 | ||
1377 | /* Make sure we accumulate data for just the associated channel | |
1378 | * (even if scanning). */ | |
1379 | if ((chan_num != (le32_to_cpu(stat_resp->flag) >> 16)) || | |
1380 | ((STATISTICS_REPLY_FLG_BAND_24G_MSK == | |
1381 | (stat_resp->flag & STATISTICS_REPLY_FLG_BAND_24G_MSK)) && band)) { | |
1382 | IWL_DEBUG_CALIB("Stats not from chan=%d, band=%d\n", | |
1383 | chan_num, band); | |
1384 | spin_unlock_irqrestore(&priv->lock, flags); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | /* Accumulate beacon statistics values across 20 beacons */ | |
1389 | chain_noise_a = le32_to_cpu(rx_info->beacon_silence_rssi_a) & | |
1390 | IN_BAND_FILTER; | |
1391 | chain_noise_b = le32_to_cpu(rx_info->beacon_silence_rssi_b) & | |
1392 | IN_BAND_FILTER; | |
1393 | chain_noise_c = le32_to_cpu(rx_info->beacon_silence_rssi_c) & | |
1394 | IN_BAND_FILTER; | |
1395 | ||
1396 | chain_sig_a = le32_to_cpu(rx_info->beacon_rssi_a) & IN_BAND_FILTER; | |
1397 | chain_sig_b = le32_to_cpu(rx_info->beacon_rssi_b) & IN_BAND_FILTER; | |
1398 | chain_sig_c = le32_to_cpu(rx_info->beacon_rssi_c) & IN_BAND_FILTER; | |
1399 | ||
1400 | spin_unlock_irqrestore(&priv->lock, flags); | |
1401 | ||
1402 | data->beacon_count++; | |
1403 | ||
1404 | data->chain_noise_a = (chain_noise_a + data->chain_noise_a); | |
1405 | data->chain_noise_b = (chain_noise_b + data->chain_noise_b); | |
1406 | data->chain_noise_c = (chain_noise_c + data->chain_noise_c); | |
1407 | ||
1408 | data->chain_signal_a = (chain_sig_a + data->chain_signal_a); | |
1409 | data->chain_signal_b = (chain_sig_b + data->chain_signal_b); | |
1410 | data->chain_signal_c = (chain_sig_c + data->chain_signal_c); | |
1411 | ||
1412 | IWL_DEBUG_CALIB("chan=%d, band=%d, beacon=%d\n", chan_num, band, | |
1413 | data->beacon_count); | |
1414 | IWL_DEBUG_CALIB("chain_sig: a %d b %d c %d\n", | |
1415 | chain_sig_a, chain_sig_b, chain_sig_c); | |
1416 | IWL_DEBUG_CALIB("chain_noise: a %d b %d c %d\n", | |
1417 | chain_noise_a, chain_noise_b, chain_noise_c); | |
1418 | ||
1419 | /* If this is the 20th beacon, determine: | |
1420 | * 1) Disconnected antennas (using signal strengths) | |
1421 | * 2) Differential gain (using silence noise) to balance receivers */ | |
1422 | if (data->beacon_count == CAL_NUM_OF_BEACONS) { | |
1423 | ||
1424 | /* Analyze signal for disconnected antenna */ | |
1425 | average_sig[0] = (data->chain_signal_a) / CAL_NUM_OF_BEACONS; | |
1426 | average_sig[1] = (data->chain_signal_b) / CAL_NUM_OF_BEACONS; | |
1427 | average_sig[2] = (data->chain_signal_c) / CAL_NUM_OF_BEACONS; | |
1428 | ||
1429 | if (average_sig[0] >= average_sig[1]) { | |
1430 | max_average_sig = average_sig[0]; | |
1431 | max_average_sig_antenna_i = 0; | |
1432 | active_chains = (1 << max_average_sig_antenna_i); | |
1433 | } else { | |
1434 | max_average_sig = average_sig[1]; | |
1435 | max_average_sig_antenna_i = 1; | |
1436 | active_chains = (1 << max_average_sig_antenna_i); | |
1437 | } | |
1438 | ||
1439 | if (average_sig[2] >= max_average_sig) { | |
1440 | max_average_sig = average_sig[2]; | |
1441 | max_average_sig_antenna_i = 2; | |
1442 | active_chains = (1 << max_average_sig_antenna_i); | |
1443 | } | |
1444 | ||
1445 | IWL_DEBUG_CALIB("average_sig: a %d b %d c %d\n", | |
1446 | average_sig[0], average_sig[1], average_sig[2]); | |
1447 | IWL_DEBUG_CALIB("max_average_sig = %d, antenna %d\n", | |
1448 | max_average_sig, max_average_sig_antenna_i); | |
1449 | ||
1450 | /* Compare signal strengths for all 3 receivers. */ | |
1451 | for (i = 0; i < NUM_RX_CHAINS; i++) { | |
1452 | if (i != max_average_sig_antenna_i) { | |
1453 | s32 rssi_delta = (max_average_sig - | |
1454 | average_sig[i]); | |
1455 | ||
1456 | /* If signal is very weak, compared with | |
1457 | * strongest, mark it as disconnected. */ | |
1458 | if (rssi_delta > MAXIMUM_ALLOWED_PATHLOSS) | |
1459 | data->disconn_array[i] = 1; | |
1460 | else | |
1461 | active_chains |= (1 << i); | |
1462 | IWL_DEBUG_CALIB("i = %d rssiDelta = %d " | |
1463 | "disconn_array[i] = %d\n", | |
1464 | i, rssi_delta, data->disconn_array[i]); | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | /*If both chains A & B are disconnected - | |
1469 | * connect B and leave A as is */ | |
1470 | if (data->disconn_array[CHAIN_A] && | |
1471 | data->disconn_array[CHAIN_B]) { | |
1472 | data->disconn_array[CHAIN_B] = 0; | |
1473 | active_chains |= (1 << CHAIN_B); | |
1474 | IWL_DEBUG_CALIB("both A & B chains are disconnected! " | |
1475 | "W/A - declare B as connected\n"); | |
1476 | } | |
1477 | ||
1478 | IWL_DEBUG_CALIB("active_chains (bitwise) = 0x%x\n", | |
1479 | active_chains); | |
1480 | ||
1481 | /* Save for use within RXON, TX, SCAN commands, etc. */ | |
1482 | priv->valid_antenna = active_chains; | |
1483 | ||
1484 | /* Analyze noise for rx balance */ | |
1485 | average_noise[0] = ((data->chain_noise_a)/CAL_NUM_OF_BEACONS); | |
1486 | average_noise[1] = ((data->chain_noise_b)/CAL_NUM_OF_BEACONS); | |
1487 | average_noise[2] = ((data->chain_noise_c)/CAL_NUM_OF_BEACONS); | |
1488 | ||
1489 | for (i = 0; i < NUM_RX_CHAINS; i++) { | |
1490 | if (!(data->disconn_array[i]) && | |
1491 | (average_noise[i] <= min_average_noise)) { | |
1492 | /* This means that chain i is active and has | |
1493 | * lower noise values so far: */ | |
1494 | min_average_noise = average_noise[i]; | |
1495 | min_average_noise_antenna_i = i; | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | data->delta_gain_code[min_average_noise_antenna_i] = 0; | |
1500 | ||
1501 | IWL_DEBUG_CALIB("average_noise: a %d b %d c %d\n", | |
1502 | average_noise[0], average_noise[1], | |
1503 | average_noise[2]); | |
1504 | ||
1505 | IWL_DEBUG_CALIB("min_average_noise = %d, antenna %d\n", | |
1506 | min_average_noise, min_average_noise_antenna_i); | |
1507 | ||
1508 | for (i = 0; i < NUM_RX_CHAINS; i++) { | |
1509 | s32 delta_g = 0; | |
1510 | ||
1511 | if (!(data->disconn_array[i]) && | |
1512 | (data->delta_gain_code[i] == | |
1513 | CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) { | |
1514 | delta_g = average_noise[i] - min_average_noise; | |
1515 | data->delta_gain_code[i] = (u8)((delta_g * | |
1516 | 10) / 15); | |
1517 | if (CHAIN_NOISE_MAX_DELTA_GAIN_CODE < | |
1518 | data->delta_gain_code[i]) | |
1519 | data->delta_gain_code[i] = | |
1520 | CHAIN_NOISE_MAX_DELTA_GAIN_CODE; | |
1521 | ||
1522 | data->delta_gain_code[i] = | |
1523 | (data->delta_gain_code[i] | (1 << 2)); | |
1524 | } else | |
1525 | data->delta_gain_code[i] = 0; | |
1526 | } | |
1527 | IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n", | |
1528 | data->delta_gain_code[0], | |
1529 | data->delta_gain_code[1], | |
1530 | data->delta_gain_code[2]); | |
1531 | ||
1532 | /* Differential gain gets sent to uCode only once */ | |
1533 | if (!data->radio_write) { | |
bb8c093b | 1534 | struct iwl4965_calibration_cmd cmd; |
b481de9c ZY |
1535 | data->radio_write = 1; |
1536 | ||
1537 | memset(&cmd, 0, sizeof(cmd)); | |
1538 | cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD; | |
1539 | cmd.diff_gain_a = data->delta_gain_code[0]; | |
1540 | cmd.diff_gain_b = data->delta_gain_code[1]; | |
1541 | cmd.diff_gain_c = data->delta_gain_code[2]; | |
857485c0 | 1542 | ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, |
b481de9c | 1543 | sizeof(cmd), &cmd); |
857485c0 | 1544 | if (ret) |
b481de9c ZY |
1545 | IWL_DEBUG_CALIB("fail sending cmd " |
1546 | "REPLY_PHY_CALIBRATION_CMD \n"); | |
1547 | ||
1548 | /* TODO we might want recalculate | |
1549 | * rx_chain in rxon cmd */ | |
1550 | ||
1551 | /* Mark so we run this algo only once! */ | |
1552 | data->state = IWL_CHAIN_NOISE_CALIBRATED; | |
1553 | } | |
1554 | data->chain_noise_a = 0; | |
1555 | data->chain_noise_b = 0; | |
1556 | data->chain_noise_c = 0; | |
1557 | data->chain_signal_a = 0; | |
1558 | data->chain_signal_b = 0; | |
1559 | data->chain_signal_c = 0; | |
1560 | data->beacon_count = 0; | |
1561 | } | |
1562 | return; | |
1563 | } | |
1564 | ||
c79dd5b5 | 1565 | static void iwl4965_sensitivity_calibration(struct iwl_priv *priv, |
bb8c093b | 1566 | struct iwl4965_notif_statistics *resp) |
b481de9c | 1567 | { |
b481de9c ZY |
1568 | u32 rx_enable_time; |
1569 | u32 fa_cck; | |
1570 | u32 fa_ofdm; | |
1571 | u32 bad_plcp_cck; | |
1572 | u32 bad_plcp_ofdm; | |
1573 | u32 norm_fa_ofdm; | |
1574 | u32 norm_fa_cck; | |
bb8c093b | 1575 | struct iwl4965_sensitivity_data *data = NULL; |
b481de9c ZY |
1576 | struct statistics_rx_non_phy *rx_info = &(resp->rx.general); |
1577 | struct statistics_rx *statistics = &(resp->rx); | |
1578 | unsigned long flags; | |
1579 | struct statistics_general_data statis; | |
857485c0 | 1580 | int ret; |
b481de9c ZY |
1581 | |
1582 | data = &(priv->sensitivity_data); | |
1583 | ||
bb8c093b | 1584 | if (!iwl4965_is_associated(priv)) { |
b481de9c ZY |
1585 | IWL_DEBUG_CALIB("<< - not associated\n"); |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | spin_lock_irqsave(&priv->lock, flags); | |
1590 | if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { | |
1591 | IWL_DEBUG_CALIB("<< invalid data.\n"); | |
1592 | spin_unlock_irqrestore(&priv->lock, flags); | |
1593 | return; | |
1594 | } | |
1595 | ||
1596 | /* Extract Statistics: */ | |
1597 | rx_enable_time = le32_to_cpu(rx_info->channel_load); | |
1598 | fa_cck = le32_to_cpu(statistics->cck.false_alarm_cnt); | |
1599 | fa_ofdm = le32_to_cpu(statistics->ofdm.false_alarm_cnt); | |
1600 | bad_plcp_cck = le32_to_cpu(statistics->cck.plcp_err); | |
1601 | bad_plcp_ofdm = le32_to_cpu(statistics->ofdm.plcp_err); | |
1602 | ||
1603 | statis.beacon_silence_rssi_a = | |
1604 | le32_to_cpu(statistics->general.beacon_silence_rssi_a); | |
1605 | statis.beacon_silence_rssi_b = | |
1606 | le32_to_cpu(statistics->general.beacon_silence_rssi_b); | |
1607 | statis.beacon_silence_rssi_c = | |
1608 | le32_to_cpu(statistics->general.beacon_silence_rssi_c); | |
1609 | statis.beacon_energy_a = | |
1610 | le32_to_cpu(statistics->general.beacon_energy_a); | |
1611 | statis.beacon_energy_b = | |
1612 | le32_to_cpu(statistics->general.beacon_energy_b); | |
1613 | statis.beacon_energy_c = | |
1614 | le32_to_cpu(statistics->general.beacon_energy_c); | |
1615 | ||
1616 | spin_unlock_irqrestore(&priv->lock, flags); | |
1617 | ||
1618 | IWL_DEBUG_CALIB("rx_enable_time = %u usecs\n", rx_enable_time); | |
1619 | ||
1620 | if (!rx_enable_time) { | |
1621 | IWL_DEBUG_CALIB("<< RX Enable Time == 0! \n"); | |
1622 | return; | |
1623 | } | |
1624 | ||
1625 | /* These statistics increase monotonically, and do not reset | |
1626 | * at each beacon. Calculate difference from last value, or just | |
1627 | * use the new statistics value if it has reset or wrapped around. */ | |
1628 | if (data->last_bad_plcp_cnt_cck > bad_plcp_cck) | |
1629 | data->last_bad_plcp_cnt_cck = bad_plcp_cck; | |
1630 | else { | |
1631 | bad_plcp_cck -= data->last_bad_plcp_cnt_cck; | |
1632 | data->last_bad_plcp_cnt_cck += bad_plcp_cck; | |
1633 | } | |
1634 | ||
1635 | if (data->last_bad_plcp_cnt_ofdm > bad_plcp_ofdm) | |
1636 | data->last_bad_plcp_cnt_ofdm = bad_plcp_ofdm; | |
1637 | else { | |
1638 | bad_plcp_ofdm -= data->last_bad_plcp_cnt_ofdm; | |
1639 | data->last_bad_plcp_cnt_ofdm += bad_plcp_ofdm; | |
1640 | } | |
1641 | ||
1642 | if (data->last_fa_cnt_ofdm > fa_ofdm) | |
1643 | data->last_fa_cnt_ofdm = fa_ofdm; | |
1644 | else { | |
1645 | fa_ofdm -= data->last_fa_cnt_ofdm; | |
1646 | data->last_fa_cnt_ofdm += fa_ofdm; | |
1647 | } | |
1648 | ||
1649 | if (data->last_fa_cnt_cck > fa_cck) | |
1650 | data->last_fa_cnt_cck = fa_cck; | |
1651 | else { | |
1652 | fa_cck -= data->last_fa_cnt_cck; | |
1653 | data->last_fa_cnt_cck += fa_cck; | |
1654 | } | |
1655 | ||
1656 | /* Total aborted signal locks */ | |
1657 | norm_fa_ofdm = fa_ofdm + bad_plcp_ofdm; | |
1658 | norm_fa_cck = fa_cck + bad_plcp_cck; | |
1659 | ||
1660 | IWL_DEBUG_CALIB("cck: fa %u badp %u ofdm: fa %u badp %u\n", fa_cck, | |
1661 | bad_plcp_cck, fa_ofdm, bad_plcp_ofdm); | |
1662 | ||
1663 | iwl4965_sens_auto_corr_ofdm(priv, norm_fa_ofdm, rx_enable_time); | |
1664 | iwl4965_sens_energy_cck(priv, norm_fa_cck, rx_enable_time, &statis); | |
857485c0 | 1665 | ret = iwl4965_sensitivity_write(priv, CMD_ASYNC); |
b481de9c ZY |
1666 | |
1667 | return; | |
1668 | } | |
1669 | ||
1670 | static void iwl4965_bg_sensitivity_work(struct work_struct *work) | |
1671 | { | |
c79dd5b5 | 1672 | struct iwl_priv *priv = container_of(work, struct iwl_priv, |
b481de9c ZY |
1673 | sensitivity_work); |
1674 | ||
1675 | mutex_lock(&priv->mutex); | |
1676 | ||
1677 | if (test_bit(STATUS_EXIT_PENDING, &priv->status) || | |
1678 | test_bit(STATUS_SCANNING, &priv->status)) { | |
1679 | mutex_unlock(&priv->mutex); | |
1680 | return; | |
1681 | } | |
1682 | ||
1683 | if (priv->start_calib) { | |
1684 | iwl4965_noise_calibration(priv, &priv->statistics); | |
1685 | ||
1686 | if (priv->sensitivity_data.state == | |
1687 | IWL_SENS_CALIB_NEED_REINIT) { | |
1688 | iwl4965_init_sensitivity(priv, CMD_ASYNC, 0); | |
1689 | priv->sensitivity_data.state = IWL_SENS_CALIB_ALLOWED; | |
1690 | } else | |
1691 | iwl4965_sensitivity_calibration(priv, | |
1692 | &priv->statistics); | |
1693 | } | |
1694 | ||
1695 | mutex_unlock(&priv->mutex); | |
1696 | return; | |
1697 | } | |
c8b0e6e1 | 1698 | #endif /*CONFIG_IWL4965_SENSITIVITY*/ |
b481de9c ZY |
1699 | |
1700 | static void iwl4965_bg_txpower_work(struct work_struct *work) | |
1701 | { | |
c79dd5b5 | 1702 | struct iwl_priv *priv = container_of(work, struct iwl_priv, |
b481de9c ZY |
1703 | txpower_work); |
1704 | ||
1705 | /* If a scan happened to start before we got here | |
1706 | * then just return; the statistics notification will | |
1707 | * kick off another scheduled work to compensate for | |
1708 | * any temperature delta we missed here. */ | |
1709 | if (test_bit(STATUS_EXIT_PENDING, &priv->status) || | |
1710 | test_bit(STATUS_SCANNING, &priv->status)) | |
1711 | return; | |
1712 | ||
1713 | mutex_lock(&priv->mutex); | |
1714 | ||
1715 | /* Regardless of if we are assocaited, we must reconfigure the | |
1716 | * TX power since frames can be sent on non-radar channels while | |
1717 | * not associated */ | |
bb8c093b | 1718 | iwl4965_hw_reg_send_txpower(priv); |
b481de9c ZY |
1719 | |
1720 | /* Update last_temperature to keep is_calib_needed from running | |
1721 | * when it isn't needed... */ | |
1722 | priv->last_temperature = priv->temperature; | |
1723 | ||
1724 | mutex_unlock(&priv->mutex); | |
1725 | } | |
1726 | ||
1727 | /* | |
1728 | * Acquire priv->lock before calling this function ! | |
1729 | */ | |
c79dd5b5 | 1730 | static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index) |
b481de9c | 1731 | { |
3395f6e9 | 1732 | iwl_write_direct32(priv, HBUS_TARG_WRPTR, |
b481de9c | 1733 | (index & 0xff) | (txq_id << 8)); |
3395f6e9 | 1734 | iwl_write_prph(priv, KDR_SCD_QUEUE_RDPTR(txq_id), index); |
b481de9c ZY |
1735 | } |
1736 | ||
8b6eaea8 CB |
1737 | /** |
1738 | * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue | |
1739 | * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed | |
1740 | * @scd_retry: (1) Indicates queue will be used in aggregation mode | |
1741 | * | |
1742 | * NOTE: Acquire priv->lock before calling this function ! | |
b481de9c | 1743 | */ |
c79dd5b5 | 1744 | static void iwl4965_tx_queue_set_status(struct iwl_priv *priv, |
bb8c093b | 1745 | struct iwl4965_tx_queue *txq, |
b481de9c ZY |
1746 | int tx_fifo_id, int scd_retry) |
1747 | { | |
1748 | int txq_id = txq->q.id; | |
8b6eaea8 CB |
1749 | |
1750 | /* Find out whether to activate Tx queue */ | |
b481de9c ZY |
1751 | int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0; |
1752 | ||
8b6eaea8 | 1753 | /* Set up and activate */ |
3395f6e9 | 1754 | iwl_write_prph(priv, KDR_SCD_QUEUE_STATUS_BITS(txq_id), |
b481de9c ZY |
1755 | (active << SCD_QUEUE_STTS_REG_POS_ACTIVE) | |
1756 | (tx_fifo_id << SCD_QUEUE_STTS_REG_POS_TXF) | | |
1757 | (scd_retry << SCD_QUEUE_STTS_REG_POS_WSL) | | |
1758 | (scd_retry << SCD_QUEUE_STTS_REG_POS_SCD_ACK) | | |
1759 | SCD_QUEUE_STTS_REG_MSK); | |
1760 | ||
1761 | txq->sched_retry = scd_retry; | |
1762 | ||
1763 | IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n", | |
8b6eaea8 | 1764 | active ? "Activate" : "Deactivate", |
b481de9c ZY |
1765 | scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); |
1766 | } | |
1767 | ||
1768 | static const u16 default_queue_to_tx_fifo[] = { | |
1769 | IWL_TX_FIFO_AC3, | |
1770 | IWL_TX_FIFO_AC2, | |
1771 | IWL_TX_FIFO_AC1, | |
1772 | IWL_TX_FIFO_AC0, | |
1773 | IWL_CMD_FIFO_NUM, | |
1774 | IWL_TX_FIFO_HCCA_1, | |
1775 | IWL_TX_FIFO_HCCA_2 | |
1776 | }; | |
1777 | ||
c79dd5b5 | 1778 | static inline void iwl4965_txq_ctx_activate(struct iwl_priv *priv, int txq_id) |
b481de9c ZY |
1779 | { |
1780 | set_bit(txq_id, &priv->txq_ctx_active_msk); | |
1781 | } | |
1782 | ||
c79dd5b5 | 1783 | static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id) |
b481de9c ZY |
1784 | { |
1785 | clear_bit(txq_id, &priv->txq_ctx_active_msk); | |
1786 | } | |
1787 | ||
c79dd5b5 | 1788 | int iwl4965_alive_notify(struct iwl_priv *priv) |
b481de9c ZY |
1789 | { |
1790 | u32 a; | |
1791 | int i = 0; | |
1792 | unsigned long flags; | |
857485c0 | 1793 | int ret; |
b481de9c ZY |
1794 | |
1795 | spin_lock_irqsave(&priv->lock, flags); | |
1796 | ||
c8b0e6e1 | 1797 | #ifdef CONFIG_IWL4965_SENSITIVITY |
b481de9c | 1798 | memset(&(priv->sensitivity_data), 0, |
bb8c093b | 1799 | sizeof(struct iwl4965_sensitivity_data)); |
b481de9c | 1800 | memset(&(priv->chain_noise_data), 0, |
bb8c093b | 1801 | sizeof(struct iwl4965_chain_noise_data)); |
b481de9c ZY |
1802 | for (i = 0; i < NUM_RX_CHAINS; i++) |
1803 | priv->chain_noise_data.delta_gain_code[i] = | |
1804 | CHAIN_NOISE_DELTA_GAIN_INIT_VAL; | |
c8b0e6e1 | 1805 | #endif /* CONFIG_IWL4965_SENSITIVITY*/ |
3395f6e9 | 1806 | ret = iwl_grab_nic_access(priv); |
857485c0 | 1807 | if (ret) { |
b481de9c | 1808 | spin_unlock_irqrestore(&priv->lock, flags); |
857485c0 | 1809 | return ret; |
b481de9c ZY |
1810 | } |
1811 | ||
8b6eaea8 | 1812 | /* Clear 4965's internal Tx Scheduler data base */ |
3395f6e9 | 1813 | priv->scd_base_addr = iwl_read_prph(priv, KDR_SCD_SRAM_BASE_ADDR); |
b481de9c ZY |
1814 | a = priv->scd_base_addr + SCD_CONTEXT_DATA_OFFSET; |
1815 | for (; a < priv->scd_base_addr + SCD_TX_STTS_BITMAP_OFFSET; a += 4) | |
3395f6e9 | 1816 | iwl_write_targ_mem(priv, a, 0); |
b481de9c | 1817 | for (; a < priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET; a += 4) |
3395f6e9 | 1818 | iwl_write_targ_mem(priv, a, 0); |
b481de9c | 1819 | for (; a < sizeof(u16) * priv->hw_setting.max_txq_num; a += 4) |
3395f6e9 | 1820 | iwl_write_targ_mem(priv, a, 0); |
b481de9c | 1821 | |
8b6eaea8 | 1822 | /* Tel 4965 where to find Tx byte count tables */ |
3395f6e9 | 1823 | iwl_write_prph(priv, KDR_SCD_DRAM_BASE_ADDR, |
b481de9c | 1824 | (priv->hw_setting.shared_phys + |
bb8c093b | 1825 | offsetof(struct iwl4965_shared, queues_byte_cnt_tbls)) >> 10); |
8b6eaea8 CB |
1826 | |
1827 | /* Disable chain mode for all queues */ | |
3395f6e9 | 1828 | iwl_write_prph(priv, KDR_SCD_QUEUECHAIN_SEL, 0); |
b481de9c | 1829 | |
8b6eaea8 | 1830 | /* Initialize each Tx queue (including the command queue) */ |
b481de9c | 1831 | for (i = 0; i < priv->hw_setting.max_txq_num; i++) { |
8b6eaea8 CB |
1832 | |
1833 | /* TFD circular buffer read/write indexes */ | |
3395f6e9 TW |
1834 | iwl_write_prph(priv, KDR_SCD_QUEUE_RDPTR(i), 0); |
1835 | iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); | |
8b6eaea8 CB |
1836 | |
1837 | /* Max Tx Window size for Scheduler-ACK mode */ | |
3395f6e9 | 1838 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
b481de9c ZY |
1839 | SCD_CONTEXT_QUEUE_OFFSET(i), |
1840 | (SCD_WIN_SIZE << | |
1841 | SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & | |
1842 | SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); | |
8b6eaea8 CB |
1843 | |
1844 | /* Frame limit */ | |
3395f6e9 | 1845 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
b481de9c ZY |
1846 | SCD_CONTEXT_QUEUE_OFFSET(i) + |
1847 | sizeof(u32), | |
1848 | (SCD_FRAME_LIMIT << | |
1849 | SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & | |
1850 | SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); | |
1851 | ||
1852 | } | |
3395f6e9 | 1853 | iwl_write_prph(priv, KDR_SCD_INTERRUPT_MASK, |
b481de9c ZY |
1854 | (1 << priv->hw_setting.max_txq_num) - 1); |
1855 | ||
8b6eaea8 | 1856 | /* Activate all Tx DMA/FIFO channels */ |
3395f6e9 | 1857 | iwl_write_prph(priv, KDR_SCD_TXFACT, |
b481de9c ZY |
1858 | SCD_TXFACT_REG_TXFIFO_MASK(0, 7)); |
1859 | ||
1860 | iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); | |
8b6eaea8 CB |
1861 | |
1862 | /* Map each Tx/cmd queue to its corresponding fifo */ | |
b481de9c ZY |
1863 | for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { |
1864 | int ac = default_queue_to_tx_fifo[i]; | |
1865 | iwl4965_txq_ctx_activate(priv, i); | |
1866 | iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); | |
1867 | } | |
1868 | ||
3395f6e9 | 1869 | iwl_release_nic_access(priv); |
b481de9c ZY |
1870 | spin_unlock_irqrestore(&priv->lock, flags); |
1871 | ||
857485c0 | 1872 | return ret; |
b481de9c ZY |
1873 | } |
1874 | ||
8b6eaea8 CB |
1875 | /** |
1876 | * iwl4965_hw_set_hw_setting | |
1877 | * | |
1878 | * Called when initializing driver | |
1879 | */ | |
c79dd5b5 | 1880 | int iwl4965_hw_set_hw_setting(struct iwl_priv *priv) |
b481de9c | 1881 | { |
316c30d9 AK |
1882 | int ret = 0; |
1883 | ||
1ea87396 AK |
1884 | if ((priv->cfg->mod_params->num_of_queues > IWL_MAX_NUM_QUEUES) || |
1885 | (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) { | |
316c30d9 AK |
1886 | IWL_ERROR("invalid queues_num, should be between %d and %d\n", |
1887 | IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES); | |
1888 | ret = -EINVAL; | |
1889 | goto out; | |
1890 | } | |
1891 | ||
8b6eaea8 | 1892 | /* Allocate area for Tx byte count tables and Rx queue status */ |
b481de9c ZY |
1893 | priv->hw_setting.shared_virt = |
1894 | pci_alloc_consistent(priv->pci_dev, | |
bb8c093b | 1895 | sizeof(struct iwl4965_shared), |
b481de9c ZY |
1896 | &priv->hw_setting.shared_phys); |
1897 | ||
316c30d9 AK |
1898 | if (!priv->hw_setting.shared_virt) { |
1899 | ret = -ENOMEM; | |
1900 | goto out; | |
1901 | } | |
b481de9c | 1902 | |
bb8c093b | 1903 | memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl4965_shared)); |
b481de9c | 1904 | |
1ea87396 | 1905 | priv->hw_setting.max_txq_num = priv->cfg->mod_params->num_of_queues; |
bb8c093b | 1906 | priv->hw_setting.tx_cmd_len = sizeof(struct iwl4965_tx_cmd); |
b481de9c ZY |
1907 | priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE; |
1908 | priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG; | |
1ea87396 | 1909 | if (priv->cfg->mod_params->amsdu_size_8K) |
9ee1ba47 RR |
1910 | priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_8K; |
1911 | else | |
1912 | priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_4K; | |
1913 | priv->hw_setting.max_pkt_size = priv->hw_setting.rx_buf_size - 256; | |
b481de9c ZY |
1914 | priv->hw_setting.max_stations = IWL4965_STATION_COUNT; |
1915 | priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID; | |
3e82a822 TW |
1916 | |
1917 | priv->hw_setting.tx_ant_num = 2; | |
1918 | ||
316c30d9 AK |
1919 | out: |
1920 | return ret; | |
b481de9c ZY |
1921 | } |
1922 | ||
1923 | /** | |
bb8c093b | 1924 | * iwl4965_hw_txq_ctx_free - Free TXQ Context |
b481de9c ZY |
1925 | * |
1926 | * Destroy all TX DMA queues and structures | |
1927 | */ | |
c79dd5b5 | 1928 | void iwl4965_hw_txq_ctx_free(struct iwl_priv *priv) |
b481de9c ZY |
1929 | { |
1930 | int txq_id; | |
1931 | ||
1932 | /* Tx queues */ | |
1933 | for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) | |
bb8c093b | 1934 | iwl4965_tx_queue_free(priv, &priv->txq[txq_id]); |
b481de9c | 1935 | |
8b6eaea8 | 1936 | /* Keep-warm buffer */ |
b481de9c ZY |
1937 | iwl4965_kw_free(priv); |
1938 | } | |
1939 | ||
1940 | /** | |
8b6eaea8 | 1941 | * iwl4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr] |
b481de9c | 1942 | * |
8b6eaea8 CB |
1943 | * Does NOT advance any TFD circular buffer read/write indexes |
1944 | * Does NOT free the TFD itself (which is within circular buffer) | |
b481de9c | 1945 | */ |
c79dd5b5 | 1946 | int iwl4965_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq) |
b481de9c | 1947 | { |
bb8c093b CH |
1948 | struct iwl4965_tfd_frame *bd_tmp = (struct iwl4965_tfd_frame *)&txq->bd[0]; |
1949 | struct iwl4965_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; | |
b481de9c ZY |
1950 | struct pci_dev *dev = priv->pci_dev; |
1951 | int i; | |
1952 | int counter = 0; | |
1953 | int index, is_odd; | |
1954 | ||
8b6eaea8 | 1955 | /* Host command buffers stay mapped in memory, nothing to clean */ |
b481de9c | 1956 | if (txq->q.id == IWL_CMD_QUEUE_NUM) |
b481de9c ZY |
1957 | return 0; |
1958 | ||
8b6eaea8 | 1959 | /* Sanity check on number of chunks */ |
b481de9c ZY |
1960 | counter = IWL_GET_BITS(*bd, num_tbs); |
1961 | if (counter > MAX_NUM_OF_TBS) { | |
1962 | IWL_ERROR("Too many chunks: %i\n", counter); | |
1963 | /* @todo issue fatal error, it is quite serious situation */ | |
1964 | return 0; | |
1965 | } | |
1966 | ||
8b6eaea8 CB |
1967 | /* Unmap chunks, if any. |
1968 | * TFD info for odd chunks is different format than for even chunks. */ | |
b481de9c ZY |
1969 | for (i = 0; i < counter; i++) { |
1970 | index = i / 2; | |
1971 | is_odd = i & 0x1; | |
1972 | ||
1973 | if (is_odd) | |
1974 | pci_unmap_single( | |
1975 | dev, | |
1976 | IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) | | |
1977 | (IWL_GET_BITS(bd->pa[index], | |
1978 | tb2_addr_hi20) << 16), | |
1979 | IWL_GET_BITS(bd->pa[index], tb2_len), | |
1980 | PCI_DMA_TODEVICE); | |
1981 | ||
1982 | else if (i > 0) | |
1983 | pci_unmap_single(dev, | |
1984 | le32_to_cpu(bd->pa[index].tb1_addr), | |
1985 | IWL_GET_BITS(bd->pa[index], tb1_len), | |
1986 | PCI_DMA_TODEVICE); | |
1987 | ||
8b6eaea8 | 1988 | /* Free SKB, if any, for this chunk */ |
fc4b6853 TW |
1989 | if (txq->txb[txq->q.read_ptr].skb[i]) { |
1990 | struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i]; | |
b481de9c ZY |
1991 | |
1992 | dev_kfree_skb(skb); | |
fc4b6853 | 1993 | txq->txb[txq->q.read_ptr].skb[i] = NULL; |
b481de9c ZY |
1994 | } |
1995 | } | |
1996 | return 0; | |
1997 | } | |
1998 | ||
c79dd5b5 | 1999 | int iwl4965_hw_reg_set_txpower(struct iwl_priv *priv, s8 power) |
b481de9c | 2000 | { |
bb8c093b | 2001 | IWL_ERROR("TODO: Implement iwl4965_hw_reg_set_txpower!\n"); |
b481de9c ZY |
2002 | return -EINVAL; |
2003 | } | |
2004 | ||
2005 | static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res) | |
2006 | { | |
2007 | s32 sign = 1; | |
2008 | ||
2009 | if (num < 0) { | |
2010 | sign = -sign; | |
2011 | num = -num; | |
2012 | } | |
2013 | if (denom < 0) { | |
2014 | sign = -sign; | |
2015 | denom = -denom; | |
2016 | } | |
2017 | *res = 1; | |
2018 | *res = ((num * 2 + denom) / (denom * 2)) * sign; | |
2019 | ||
2020 | return 1; | |
2021 | } | |
2022 | ||
8b6eaea8 CB |
2023 | /** |
2024 | * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower | |
2025 | * | |
2026 | * Determines power supply voltage compensation for txpower calculations. | |
2027 | * Returns number of 1/2-dB steps to subtract from gain table index, | |
2028 | * to compensate for difference between power supply voltage during | |
2029 | * factory measurements, vs. current power supply voltage. | |
2030 | * | |
2031 | * Voltage indication is higher for lower voltage. | |
2032 | * Lower voltage requires more gain (lower gain table index). | |
2033 | */ | |
b481de9c ZY |
2034 | static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage, |
2035 | s32 current_voltage) | |
2036 | { | |
2037 | s32 comp = 0; | |
2038 | ||
2039 | if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) || | |
2040 | (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage)) | |
2041 | return 0; | |
2042 | ||
2043 | iwl4965_math_div_round(current_voltage - eeprom_voltage, | |
2044 | TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp); | |
2045 | ||
2046 | if (current_voltage > eeprom_voltage) | |
2047 | comp *= 2; | |
2048 | if ((comp < -2) || (comp > 2)) | |
2049 | comp = 0; | |
2050 | ||
2051 | return comp; | |
2052 | } | |
2053 | ||
bf85ea4f | 2054 | static const struct iwl_channel_info * |
c79dd5b5 | 2055 | iwl4965_get_channel_txpower_info(struct iwl_priv *priv, |
8318d78a | 2056 | enum ieee80211_band band, u16 channel) |
b481de9c | 2057 | { |
bf85ea4f | 2058 | const struct iwl_channel_info *ch_info; |
b481de9c | 2059 | |
8622e705 | 2060 | ch_info = iwl_get_channel_info(priv, band, channel); |
b481de9c ZY |
2061 | |
2062 | if (!is_channel_valid(ch_info)) | |
2063 | return NULL; | |
2064 | ||
2065 | return ch_info; | |
2066 | } | |
2067 | ||
2068 | static s32 iwl4965_get_tx_atten_grp(u16 channel) | |
2069 | { | |
2070 | if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH && | |
2071 | channel <= CALIB_IWL_TX_ATTEN_GR5_LCH) | |
2072 | return CALIB_CH_GROUP_5; | |
2073 | ||
2074 | if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH && | |
2075 | channel <= CALIB_IWL_TX_ATTEN_GR1_LCH) | |
2076 | return CALIB_CH_GROUP_1; | |
2077 | ||
2078 | if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH && | |
2079 | channel <= CALIB_IWL_TX_ATTEN_GR2_LCH) | |
2080 | return CALIB_CH_GROUP_2; | |
2081 | ||
2082 | if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH && | |
2083 | channel <= CALIB_IWL_TX_ATTEN_GR3_LCH) | |
2084 | return CALIB_CH_GROUP_3; | |
2085 | ||
2086 | if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH && | |
2087 | channel <= CALIB_IWL_TX_ATTEN_GR4_LCH) | |
2088 | return CALIB_CH_GROUP_4; | |
2089 | ||
2090 | IWL_ERROR("Can't find txatten group for channel %d.\n", channel); | |
2091 | return -1; | |
2092 | } | |
2093 | ||
c79dd5b5 | 2094 | static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel) |
b481de9c ZY |
2095 | { |
2096 | s32 b = -1; | |
2097 | ||
2098 | for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) { | |
2099 | if (priv->eeprom.calib_info.band_info[b].ch_from == 0) | |
2100 | continue; | |
2101 | ||
2102 | if ((channel >= priv->eeprom.calib_info.band_info[b].ch_from) | |
2103 | && (channel <= priv->eeprom.calib_info.band_info[b].ch_to)) | |
2104 | break; | |
2105 | } | |
2106 | ||
2107 | return b; | |
2108 | } | |
2109 | ||
2110 | static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2) | |
2111 | { | |
2112 | s32 val; | |
2113 | ||
2114 | if (x2 == x1) | |
2115 | return y1; | |
2116 | else { | |
2117 | iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val); | |
2118 | return val + y2; | |
2119 | } | |
2120 | } | |
2121 | ||
8b6eaea8 CB |
2122 | /** |
2123 | * iwl4965_interpolate_chan - Interpolate factory measurements for one channel | |
2124 | * | |
2125 | * Interpolates factory measurements from the two sample channels within a | |
2126 | * sub-band, to apply to channel of interest. Interpolation is proportional to | |
2127 | * differences in channel frequencies, which is proportional to differences | |
2128 | * in channel number. | |
2129 | */ | |
c79dd5b5 | 2130 | static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel, |
bb8c093b | 2131 | struct iwl4965_eeprom_calib_ch_info *chan_info) |
b481de9c ZY |
2132 | { |
2133 | s32 s = -1; | |
2134 | u32 c; | |
2135 | u32 m; | |
bb8c093b CH |
2136 | const struct iwl4965_eeprom_calib_measure *m1; |
2137 | const struct iwl4965_eeprom_calib_measure *m2; | |
2138 | struct iwl4965_eeprom_calib_measure *omeas; | |
b481de9c ZY |
2139 | u32 ch_i1; |
2140 | u32 ch_i2; | |
2141 | ||
2142 | s = iwl4965_get_sub_band(priv, channel); | |
2143 | if (s >= EEPROM_TX_POWER_BANDS) { | |
2144 | IWL_ERROR("Tx Power can not find channel %d ", channel); | |
2145 | return -1; | |
2146 | } | |
2147 | ||
2148 | ch_i1 = priv->eeprom.calib_info.band_info[s].ch1.ch_num; | |
2149 | ch_i2 = priv->eeprom.calib_info.band_info[s].ch2.ch_num; | |
2150 | chan_info->ch_num = (u8) channel; | |
2151 | ||
2152 | IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n", | |
2153 | channel, s, ch_i1, ch_i2); | |
2154 | ||
2155 | for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) { | |
2156 | for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) { | |
2157 | m1 = &(priv->eeprom.calib_info.band_info[s].ch1. | |
2158 | measurements[c][m]); | |
2159 | m2 = &(priv->eeprom.calib_info.band_info[s].ch2. | |
2160 | measurements[c][m]); | |
2161 | omeas = &(chan_info->measurements[c][m]); | |
2162 | ||
2163 | omeas->actual_pow = | |
2164 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
2165 | m1->actual_pow, | |
2166 | ch_i2, | |
2167 | m2->actual_pow); | |
2168 | omeas->gain_idx = | |
2169 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
2170 | m1->gain_idx, ch_i2, | |
2171 | m2->gain_idx); | |
2172 | omeas->temperature = | |
2173 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
2174 | m1->temperature, | |
2175 | ch_i2, | |
2176 | m2->temperature); | |
2177 | omeas->pa_det = | |
2178 | (s8) iwl4965_interpolate_value(channel, ch_i1, | |
2179 | m1->pa_det, ch_i2, | |
2180 | m2->pa_det); | |
2181 | ||
2182 | IWL_DEBUG_TXPOWER | |
2183 | ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m, | |
2184 | m1->actual_pow, m2->actual_pow, omeas->actual_pow); | |
2185 | IWL_DEBUG_TXPOWER | |
2186 | ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m, | |
2187 | m1->gain_idx, m2->gain_idx, omeas->gain_idx); | |
2188 | IWL_DEBUG_TXPOWER | |
2189 | ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m, | |
2190 | m1->pa_det, m2->pa_det, omeas->pa_det); | |
2191 | IWL_DEBUG_TXPOWER | |
2192 | ("chain %d meas %d T1=%d T2=%d T=%d\n", c, m, | |
2193 | m1->temperature, m2->temperature, | |
2194 | omeas->temperature); | |
2195 | } | |
2196 | } | |
2197 | ||
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | /* bit-rate-dependent table to prevent Tx distortion, in half-dB units, | |
2202 | * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */ | |
2203 | static s32 back_off_table[] = { | |
2204 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */ | |
2205 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */ | |
2206 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */ | |
2207 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */ | |
2208 | 10 /* CCK */ | |
2209 | }; | |
2210 | ||
2211 | /* Thermal compensation values for txpower for various frequency ranges ... | |
2212 | * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */ | |
bb8c093b | 2213 | static struct iwl4965_txpower_comp_entry { |
b481de9c ZY |
2214 | s32 degrees_per_05db_a; |
2215 | s32 degrees_per_05db_a_denom; | |
2216 | } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = { | |
2217 | {9, 2}, /* group 0 5.2, ch 34-43 */ | |
2218 | {4, 1}, /* group 1 5.2, ch 44-70 */ | |
2219 | {4, 1}, /* group 2 5.2, ch 71-124 */ | |
2220 | {4, 1}, /* group 3 5.2, ch 125-200 */ | |
2221 | {3, 1} /* group 4 2.4, ch all */ | |
2222 | }; | |
2223 | ||
2224 | static s32 get_min_power_index(s32 rate_power_index, u32 band) | |
2225 | { | |
2226 | if (!band) { | |
2227 | if ((rate_power_index & 7) <= 4) | |
2228 | return MIN_TX_GAIN_INDEX_52GHZ_EXT; | |
2229 | } | |
2230 | return MIN_TX_GAIN_INDEX; | |
2231 | } | |
2232 | ||
2233 | struct gain_entry { | |
2234 | u8 dsp; | |
2235 | u8 radio; | |
2236 | }; | |
2237 | ||
2238 | static const struct gain_entry gain_table[2][108] = { | |
2239 | /* 5.2GHz power gain index table */ | |
2240 | { | |
2241 | {123, 0x3F}, /* highest txpower */ | |
2242 | {117, 0x3F}, | |
2243 | {110, 0x3F}, | |
2244 | {104, 0x3F}, | |
2245 | {98, 0x3F}, | |
2246 | {110, 0x3E}, | |
2247 | {104, 0x3E}, | |
2248 | {98, 0x3E}, | |
2249 | {110, 0x3D}, | |
2250 | {104, 0x3D}, | |
2251 | {98, 0x3D}, | |
2252 | {110, 0x3C}, | |
2253 | {104, 0x3C}, | |
2254 | {98, 0x3C}, | |
2255 | {110, 0x3B}, | |
2256 | {104, 0x3B}, | |
2257 | {98, 0x3B}, | |
2258 | {110, 0x3A}, | |
2259 | {104, 0x3A}, | |
2260 | {98, 0x3A}, | |
2261 | {110, 0x39}, | |
2262 | {104, 0x39}, | |
2263 | {98, 0x39}, | |
2264 | {110, 0x38}, | |
2265 | {104, 0x38}, | |
2266 | {98, 0x38}, | |
2267 | {110, 0x37}, | |
2268 | {104, 0x37}, | |
2269 | {98, 0x37}, | |
2270 | {110, 0x36}, | |
2271 | {104, 0x36}, | |
2272 | {98, 0x36}, | |
2273 | {110, 0x35}, | |
2274 | {104, 0x35}, | |
2275 | {98, 0x35}, | |
2276 | {110, 0x34}, | |
2277 | {104, 0x34}, | |
2278 | {98, 0x34}, | |
2279 | {110, 0x33}, | |
2280 | {104, 0x33}, | |
2281 | {98, 0x33}, | |
2282 | {110, 0x32}, | |
2283 | {104, 0x32}, | |
2284 | {98, 0x32}, | |
2285 | {110, 0x31}, | |
2286 | {104, 0x31}, | |
2287 | {98, 0x31}, | |
2288 | {110, 0x30}, | |
2289 | {104, 0x30}, | |
2290 | {98, 0x30}, | |
2291 | {110, 0x25}, | |
2292 | {104, 0x25}, | |
2293 | {98, 0x25}, | |
2294 | {110, 0x24}, | |
2295 | {104, 0x24}, | |
2296 | {98, 0x24}, | |
2297 | {110, 0x23}, | |
2298 | {104, 0x23}, | |
2299 | {98, 0x23}, | |
2300 | {110, 0x22}, | |
2301 | {104, 0x18}, | |
2302 | {98, 0x18}, | |
2303 | {110, 0x17}, | |
2304 | {104, 0x17}, | |
2305 | {98, 0x17}, | |
2306 | {110, 0x16}, | |
2307 | {104, 0x16}, | |
2308 | {98, 0x16}, | |
2309 | {110, 0x15}, | |
2310 | {104, 0x15}, | |
2311 | {98, 0x15}, | |
2312 | {110, 0x14}, | |
2313 | {104, 0x14}, | |
2314 | {98, 0x14}, | |
2315 | {110, 0x13}, | |
2316 | {104, 0x13}, | |
2317 | {98, 0x13}, | |
2318 | {110, 0x12}, | |
2319 | {104, 0x08}, | |
2320 | {98, 0x08}, | |
2321 | {110, 0x07}, | |
2322 | {104, 0x07}, | |
2323 | {98, 0x07}, | |
2324 | {110, 0x06}, | |
2325 | {104, 0x06}, | |
2326 | {98, 0x06}, | |
2327 | {110, 0x05}, | |
2328 | {104, 0x05}, | |
2329 | {98, 0x05}, | |
2330 | {110, 0x04}, | |
2331 | {104, 0x04}, | |
2332 | {98, 0x04}, | |
2333 | {110, 0x03}, | |
2334 | {104, 0x03}, | |
2335 | {98, 0x03}, | |
2336 | {110, 0x02}, | |
2337 | {104, 0x02}, | |
2338 | {98, 0x02}, | |
2339 | {110, 0x01}, | |
2340 | {104, 0x01}, | |
2341 | {98, 0x01}, | |
2342 | {110, 0x00}, | |
2343 | {104, 0x00}, | |
2344 | {98, 0x00}, | |
2345 | {93, 0x00}, | |
2346 | {88, 0x00}, | |
2347 | {83, 0x00}, | |
2348 | {78, 0x00}, | |
2349 | }, | |
2350 | /* 2.4GHz power gain index table */ | |
2351 | { | |
2352 | {110, 0x3f}, /* highest txpower */ | |
2353 | {104, 0x3f}, | |
2354 | {98, 0x3f}, | |
2355 | {110, 0x3e}, | |
2356 | {104, 0x3e}, | |
2357 | {98, 0x3e}, | |
2358 | {110, 0x3d}, | |
2359 | {104, 0x3d}, | |
2360 | {98, 0x3d}, | |
2361 | {110, 0x3c}, | |
2362 | {104, 0x3c}, | |
2363 | {98, 0x3c}, | |
2364 | {110, 0x3b}, | |
2365 | {104, 0x3b}, | |
2366 | {98, 0x3b}, | |
2367 | {110, 0x3a}, | |
2368 | {104, 0x3a}, | |
2369 | {98, 0x3a}, | |
2370 | {110, 0x39}, | |
2371 | {104, 0x39}, | |
2372 | {98, 0x39}, | |
2373 | {110, 0x38}, | |
2374 | {104, 0x38}, | |
2375 | {98, 0x38}, | |
2376 | {110, 0x37}, | |
2377 | {104, 0x37}, | |
2378 | {98, 0x37}, | |
2379 | {110, 0x36}, | |
2380 | {104, 0x36}, | |
2381 | {98, 0x36}, | |
2382 | {110, 0x35}, | |
2383 | {104, 0x35}, | |
2384 | {98, 0x35}, | |
2385 | {110, 0x34}, | |
2386 | {104, 0x34}, | |
2387 | {98, 0x34}, | |
2388 | {110, 0x33}, | |
2389 | {104, 0x33}, | |
2390 | {98, 0x33}, | |
2391 | {110, 0x32}, | |
2392 | {104, 0x32}, | |
2393 | {98, 0x32}, | |
2394 | {110, 0x31}, | |
2395 | {104, 0x31}, | |
2396 | {98, 0x31}, | |
2397 | {110, 0x30}, | |
2398 | {104, 0x30}, | |
2399 | {98, 0x30}, | |
2400 | {110, 0x6}, | |
2401 | {104, 0x6}, | |
2402 | {98, 0x6}, | |
2403 | {110, 0x5}, | |
2404 | {104, 0x5}, | |
2405 | {98, 0x5}, | |
2406 | {110, 0x4}, | |
2407 | {104, 0x4}, | |
2408 | {98, 0x4}, | |
2409 | {110, 0x3}, | |
2410 | {104, 0x3}, | |
2411 | {98, 0x3}, | |
2412 | {110, 0x2}, | |
2413 | {104, 0x2}, | |
2414 | {98, 0x2}, | |
2415 | {110, 0x1}, | |
2416 | {104, 0x1}, | |
2417 | {98, 0x1}, | |
2418 | {110, 0x0}, | |
2419 | {104, 0x0}, | |
2420 | {98, 0x0}, | |
2421 | {97, 0}, | |
2422 | {96, 0}, | |
2423 | {95, 0}, | |
2424 | {94, 0}, | |
2425 | {93, 0}, | |
2426 | {92, 0}, | |
2427 | {91, 0}, | |
2428 | {90, 0}, | |
2429 | {89, 0}, | |
2430 | {88, 0}, | |
2431 | {87, 0}, | |
2432 | {86, 0}, | |
2433 | {85, 0}, | |
2434 | {84, 0}, | |
2435 | {83, 0}, | |
2436 | {82, 0}, | |
2437 | {81, 0}, | |
2438 | {80, 0}, | |
2439 | {79, 0}, | |
2440 | {78, 0}, | |
2441 | {77, 0}, | |
2442 | {76, 0}, | |
2443 | {75, 0}, | |
2444 | {74, 0}, | |
2445 | {73, 0}, | |
2446 | {72, 0}, | |
2447 | {71, 0}, | |
2448 | {70, 0}, | |
2449 | {69, 0}, | |
2450 | {68, 0}, | |
2451 | {67, 0}, | |
2452 | {66, 0}, | |
2453 | {65, 0}, | |
2454 | {64, 0}, | |
2455 | {63, 0}, | |
2456 | {62, 0}, | |
2457 | {61, 0}, | |
2458 | {60, 0}, | |
2459 | {59, 0}, | |
2460 | } | |
2461 | }; | |
2462 | ||
c79dd5b5 | 2463 | static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, |
b481de9c | 2464 | u8 is_fat, u8 ctrl_chan_high, |
bb8c093b | 2465 | struct iwl4965_tx_power_db *tx_power_tbl) |
b481de9c ZY |
2466 | { |
2467 | u8 saturation_power; | |
2468 | s32 target_power; | |
2469 | s32 user_target_power; | |
2470 | s32 power_limit; | |
2471 | s32 current_temp; | |
2472 | s32 reg_limit; | |
2473 | s32 current_regulatory; | |
2474 | s32 txatten_grp = CALIB_CH_GROUP_MAX; | |
2475 | int i; | |
2476 | int c; | |
bf85ea4f | 2477 | const struct iwl_channel_info *ch_info = NULL; |
bb8c093b CH |
2478 | struct iwl4965_eeprom_calib_ch_info ch_eeprom_info; |
2479 | const struct iwl4965_eeprom_calib_measure *measurement; | |
b481de9c ZY |
2480 | s16 voltage; |
2481 | s32 init_voltage; | |
2482 | s32 voltage_compensation; | |
2483 | s32 degrees_per_05db_num; | |
2484 | s32 degrees_per_05db_denom; | |
2485 | s32 factory_temp; | |
2486 | s32 temperature_comp[2]; | |
2487 | s32 factory_gain_index[2]; | |
2488 | s32 factory_actual_pwr[2]; | |
2489 | s32 power_index; | |
2490 | ||
2491 | /* Sanity check requested level (dBm) */ | |
2492 | if (priv->user_txpower_limit < IWL_TX_POWER_TARGET_POWER_MIN) { | |
2493 | IWL_WARNING("Requested user TXPOWER %d below limit.\n", | |
2494 | priv->user_txpower_limit); | |
2495 | return -EINVAL; | |
2496 | } | |
2497 | if (priv->user_txpower_limit > IWL_TX_POWER_TARGET_POWER_MAX) { | |
2498 | IWL_WARNING("Requested user TXPOWER %d above limit.\n", | |
2499 | priv->user_txpower_limit); | |
2500 | return -EINVAL; | |
2501 | } | |
2502 | ||
2503 | /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units | |
2504 | * are used for indexing into txpower table) */ | |
2505 | user_target_power = 2 * priv->user_txpower_limit; | |
2506 | ||
2507 | /* Get current (RXON) channel, band, width */ | |
2508 | ch_info = | |
8318d78a | 2509 | iwl4965_get_channel_txpower_info(priv, priv->band, channel); |
b481de9c ZY |
2510 | |
2511 | IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band, | |
2512 | is_fat); | |
2513 | ||
2514 | if (!ch_info) | |
2515 | return -EINVAL; | |
2516 | ||
2517 | /* get txatten group, used to select 1) thermal txpower adjustment | |
2518 | * and 2) mimo txpower balance between Tx chains. */ | |
2519 | txatten_grp = iwl4965_get_tx_atten_grp(channel); | |
2520 | if (txatten_grp < 0) | |
2521 | return -EINVAL; | |
2522 | ||
2523 | IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n", | |
2524 | channel, txatten_grp); | |
2525 | ||
2526 | if (is_fat) { | |
2527 | if (ctrl_chan_high) | |
2528 | channel -= 2; | |
2529 | else | |
2530 | channel += 2; | |
2531 | } | |
2532 | ||
2533 | /* hardware txpower limits ... | |
2534 | * saturation (clipping distortion) txpowers are in half-dBm */ | |
2535 | if (band) | |
2536 | saturation_power = priv->eeprom.calib_info.saturation_power24; | |
2537 | else | |
2538 | saturation_power = priv->eeprom.calib_info.saturation_power52; | |
2539 | ||
2540 | if (saturation_power < IWL_TX_POWER_SATURATION_MIN || | |
2541 | saturation_power > IWL_TX_POWER_SATURATION_MAX) { | |
2542 | if (band) | |
2543 | saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24; | |
2544 | else | |
2545 | saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52; | |
2546 | } | |
2547 | ||
2548 | /* regulatory txpower limits ... reg_limit values are in half-dBm, | |
2549 | * max_power_avg values are in dBm, convert * 2 */ | |
2550 | if (is_fat) | |
2551 | reg_limit = ch_info->fat_max_power_avg * 2; | |
2552 | else | |
2553 | reg_limit = ch_info->max_power_avg * 2; | |
2554 | ||
2555 | if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) || | |
2556 | (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) { | |
2557 | if (band) | |
2558 | reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24; | |
2559 | else | |
2560 | reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52; | |
2561 | } | |
2562 | ||
2563 | /* Interpolate txpower calibration values for this channel, | |
2564 | * based on factory calibration tests on spaced channels. */ | |
2565 | iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info); | |
2566 | ||
2567 | /* calculate tx gain adjustment based on power supply voltage */ | |
2568 | voltage = priv->eeprom.calib_info.voltage; | |
2569 | init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage); | |
2570 | voltage_compensation = | |
2571 | iwl4965_get_voltage_compensation(voltage, init_voltage); | |
2572 | ||
2573 | IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n", | |
2574 | init_voltage, | |
2575 | voltage, voltage_compensation); | |
2576 | ||
2577 | /* get current temperature (Celsius) */ | |
2578 | current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN); | |
2579 | current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX); | |
2580 | current_temp = KELVIN_TO_CELSIUS(current_temp); | |
2581 | ||
2582 | /* select thermal txpower adjustment params, based on channel group | |
2583 | * (same frequency group used for mimo txatten adjustment) */ | |
2584 | degrees_per_05db_num = | |
2585 | tx_power_cmp_tble[txatten_grp].degrees_per_05db_a; | |
2586 | degrees_per_05db_denom = | |
2587 | tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom; | |
2588 | ||
2589 | /* get per-chain txpower values from factory measurements */ | |
2590 | for (c = 0; c < 2; c++) { | |
2591 | measurement = &ch_eeprom_info.measurements[c][1]; | |
2592 | ||
2593 | /* txgain adjustment (in half-dB steps) based on difference | |
2594 | * between factory and current temperature */ | |
2595 | factory_temp = measurement->temperature; | |
2596 | iwl4965_math_div_round((current_temp - factory_temp) * | |
2597 | degrees_per_05db_denom, | |
2598 | degrees_per_05db_num, | |
2599 | &temperature_comp[c]); | |
2600 | ||
2601 | factory_gain_index[c] = measurement->gain_idx; | |
2602 | factory_actual_pwr[c] = measurement->actual_pow; | |
2603 | ||
2604 | IWL_DEBUG_TXPOWER("chain = %d\n", c); | |
2605 | IWL_DEBUG_TXPOWER("fctry tmp %d, " | |
2606 | "curr tmp %d, comp %d steps\n", | |
2607 | factory_temp, current_temp, | |
2608 | temperature_comp[c]); | |
2609 | ||
2610 | IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n", | |
2611 | factory_gain_index[c], | |
2612 | factory_actual_pwr[c]); | |
2613 | } | |
2614 | ||
2615 | /* for each of 33 bit-rates (including 1 for CCK) */ | |
2616 | for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) { | |
2617 | u8 is_mimo_rate; | |
bb8c093b | 2618 | union iwl4965_tx_power_dual_stream tx_power; |
b481de9c ZY |
2619 | |
2620 | /* for mimo, reduce each chain's txpower by half | |
2621 | * (3dB, 6 steps), so total output power is regulatory | |
2622 | * compliant. */ | |
2623 | if (i & 0x8) { | |
2624 | current_regulatory = reg_limit - | |
2625 | IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION; | |
2626 | is_mimo_rate = 1; | |
2627 | } else { | |
2628 | current_regulatory = reg_limit; | |
2629 | is_mimo_rate = 0; | |
2630 | } | |
2631 | ||
2632 | /* find txpower limit, either hardware or regulatory */ | |
2633 | power_limit = saturation_power - back_off_table[i]; | |
2634 | if (power_limit > current_regulatory) | |
2635 | power_limit = current_regulatory; | |
2636 | ||
2637 | /* reduce user's txpower request if necessary | |
2638 | * for this rate on this channel */ | |
2639 | target_power = user_target_power; | |
2640 | if (target_power > power_limit) | |
2641 | target_power = power_limit; | |
2642 | ||
2643 | IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n", | |
2644 | i, saturation_power - back_off_table[i], | |
2645 | current_regulatory, user_target_power, | |
2646 | target_power); | |
2647 | ||
2648 | /* for each of 2 Tx chains (radio transmitters) */ | |
2649 | for (c = 0; c < 2; c++) { | |
2650 | s32 atten_value; | |
2651 | ||
2652 | if (is_mimo_rate) | |
2653 | atten_value = | |
2654 | (s32)le32_to_cpu(priv->card_alive_init. | |
2655 | tx_atten[txatten_grp][c]); | |
2656 | else | |
2657 | atten_value = 0; | |
2658 | ||
2659 | /* calculate index; higher index means lower txpower */ | |
2660 | power_index = (u8) (factory_gain_index[c] - | |
2661 | (target_power - | |
2662 | factory_actual_pwr[c]) - | |
2663 | temperature_comp[c] - | |
2664 | voltage_compensation + | |
2665 | atten_value); | |
2666 | ||
2667 | /* IWL_DEBUG_TXPOWER("calculated txpower index %d\n", | |
2668 | power_index); */ | |
2669 | ||
2670 | if (power_index < get_min_power_index(i, band)) | |
2671 | power_index = get_min_power_index(i, band); | |
2672 | ||
2673 | /* adjust 5 GHz index to support negative indexes */ | |
2674 | if (!band) | |
2675 | power_index += 9; | |
2676 | ||
2677 | /* CCK, rate 32, reduce txpower for CCK */ | |
2678 | if (i == POWER_TABLE_CCK_ENTRY) | |
2679 | power_index += | |
2680 | IWL_TX_POWER_CCK_COMPENSATION_C_STEP; | |
2681 | ||
2682 | /* stay within the table! */ | |
2683 | if (power_index > 107) { | |
2684 | IWL_WARNING("txpower index %d > 107\n", | |
2685 | power_index); | |
2686 | power_index = 107; | |
2687 | } | |
2688 | if (power_index < 0) { | |
2689 | IWL_WARNING("txpower index %d < 0\n", | |
2690 | power_index); | |
2691 | power_index = 0; | |
2692 | } | |
2693 | ||
2694 | /* fill txpower command for this rate/chain */ | |
2695 | tx_power.s.radio_tx_gain[c] = | |
2696 | gain_table[band][power_index].radio; | |
2697 | tx_power.s.dsp_predis_atten[c] = | |
2698 | gain_table[band][power_index].dsp; | |
2699 | ||
2700 | IWL_DEBUG_TXPOWER("chain %d mimo %d index %d " | |
2701 | "gain 0x%02x dsp %d\n", | |
2702 | c, atten_value, power_index, | |
2703 | tx_power.s.radio_tx_gain[c], | |
2704 | tx_power.s.dsp_predis_atten[c]); | |
2705 | }/* for each chain */ | |
2706 | ||
2707 | tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw); | |
2708 | ||
2709 | }/* for each rate */ | |
2710 | ||
2711 | return 0; | |
2712 | } | |
2713 | ||
2714 | /** | |
bb8c093b | 2715 | * iwl4965_hw_reg_send_txpower - Configure the TXPOWER level user limit |
b481de9c ZY |
2716 | * |
2717 | * Uses the active RXON for channel, band, and characteristics (fat, high) | |
2718 | * The power limit is taken from priv->user_txpower_limit. | |
2719 | */ | |
c79dd5b5 | 2720 | int iwl4965_hw_reg_send_txpower(struct iwl_priv *priv) |
b481de9c | 2721 | { |
bb8c093b | 2722 | struct iwl4965_txpowertable_cmd cmd = { 0 }; |
857485c0 | 2723 | int ret; |
b481de9c ZY |
2724 | u8 band = 0; |
2725 | u8 is_fat = 0; | |
2726 | u8 ctrl_chan_high = 0; | |
2727 | ||
2728 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
2729 | /* If this gets hit a lot, switch it to a BUG() and catch | |
2730 | * the stack trace to find out who is calling this during | |
2731 | * a scan. */ | |
2732 | IWL_WARNING("TX Power requested while scanning!\n"); | |
2733 | return -EAGAIN; | |
2734 | } | |
2735 | ||
8318d78a | 2736 | band = priv->band == IEEE80211_BAND_2GHZ; |
b481de9c ZY |
2737 | |
2738 | is_fat = is_fat_channel(priv->active_rxon.flags); | |
2739 | ||
2740 | if (is_fat && | |
2741 | (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) | |
2742 | ctrl_chan_high = 1; | |
2743 | ||
2744 | cmd.band = band; | |
2745 | cmd.channel = priv->active_rxon.channel; | |
2746 | ||
857485c0 | 2747 | ret = iwl4965_fill_txpower_tbl(priv, band, |
b481de9c ZY |
2748 | le16_to_cpu(priv->active_rxon.channel), |
2749 | is_fat, ctrl_chan_high, &cmd.tx_power); | |
857485c0 TW |
2750 | if (ret) |
2751 | goto out; | |
b481de9c | 2752 | |
857485c0 TW |
2753 | ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); |
2754 | ||
2755 | out: | |
2756 | return ret; | |
b481de9c ZY |
2757 | } |
2758 | ||
c79dd5b5 | 2759 | int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel) |
b481de9c ZY |
2760 | { |
2761 | int rc; | |
2762 | u8 band = 0; | |
2763 | u8 is_fat = 0; | |
2764 | u8 ctrl_chan_high = 0; | |
bb8c093b | 2765 | struct iwl4965_channel_switch_cmd cmd = { 0 }; |
bf85ea4f | 2766 | const struct iwl_channel_info *ch_info; |
b481de9c | 2767 | |
8318d78a | 2768 | band = priv->band == IEEE80211_BAND_2GHZ; |
b481de9c | 2769 | |
8622e705 | 2770 | ch_info = iwl_get_channel_info(priv, priv->band, channel); |
b481de9c ZY |
2771 | |
2772 | is_fat = is_fat_channel(priv->staging_rxon.flags); | |
2773 | ||
2774 | if (is_fat && | |
2775 | (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) | |
2776 | ctrl_chan_high = 1; | |
2777 | ||
2778 | cmd.band = band; | |
2779 | cmd.expect_beacon = 0; | |
2780 | cmd.channel = cpu_to_le16(channel); | |
2781 | cmd.rxon_flags = priv->active_rxon.flags; | |
2782 | cmd.rxon_filter_flags = priv->active_rxon.filter_flags; | |
2783 | cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time); | |
2784 | if (ch_info) | |
2785 | cmd.expect_beacon = is_channel_radar(ch_info); | |
2786 | else | |
2787 | cmd.expect_beacon = 1; | |
2788 | ||
2789 | rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_fat, | |
2790 | ctrl_chan_high, &cmd.tx_power); | |
2791 | if (rc) { | |
2792 | IWL_DEBUG_11H("error:%d fill txpower_tbl\n", rc); | |
2793 | return rc; | |
2794 | } | |
2795 | ||
857485c0 | 2796 | rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd); |
b481de9c ZY |
2797 | return rc; |
2798 | } | |
2799 | ||
2800 | #define RTS_HCCA_RETRY_LIMIT 3 | |
2801 | #define RTS_DFAULT_RETRY_LIMIT 60 | |
2802 | ||
c79dd5b5 | 2803 | void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv, |
857485c0 | 2804 | struct iwl_cmd *cmd, |
b481de9c ZY |
2805 | struct ieee80211_tx_control *ctrl, |
2806 | struct ieee80211_hdr *hdr, int sta_id, | |
2807 | int is_hcca) | |
2808 | { | |
87e4f7df | 2809 | struct iwl4965_tx_cmd *tx = &cmd->cmd.tx; |
b481de9c ZY |
2810 | u8 rts_retry_limit = 0; |
2811 | u8 data_retry_limit = 0; | |
b481de9c | 2812 | u16 fc = le16_to_cpu(hdr->frame_control); |
87e4f7df TW |
2813 | u8 rate_plcp; |
2814 | u16 rate_flags = 0; | |
8318d78a | 2815 | int rate_idx = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1); |
b481de9c | 2816 | |
87e4f7df | 2817 | rate_plcp = iwl4965_rates[rate_idx].plcp; |
b481de9c ZY |
2818 | |
2819 | rts_retry_limit = (is_hcca) ? | |
2820 | RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT; | |
2821 | ||
87e4f7df TW |
2822 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) |
2823 | rate_flags |= RATE_MCS_CCK_MSK; | |
2824 | ||
2825 | ||
b481de9c ZY |
2826 | if (ieee80211_is_probe_response(fc)) { |
2827 | data_retry_limit = 3; | |
2828 | if (data_retry_limit < rts_retry_limit) | |
2829 | rts_retry_limit = data_retry_limit; | |
2830 | } else | |
2831 | data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
2832 | ||
2833 | if (priv->data_retry_limit != -1) | |
2834 | data_retry_limit = priv->data_retry_limit; | |
2835 | ||
87e4f7df TW |
2836 | |
2837 | if (ieee80211_is_data(fc)) { | |
2838 | tx->initial_rate_index = 0; | |
2839 | tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
2840 | } else { | |
b481de9c ZY |
2841 | switch (fc & IEEE80211_FCTL_STYPE) { |
2842 | case IEEE80211_STYPE_AUTH: | |
2843 | case IEEE80211_STYPE_DEAUTH: | |
2844 | case IEEE80211_STYPE_ASSOC_REQ: | |
2845 | case IEEE80211_STYPE_REASSOC_REQ: | |
87e4f7df TW |
2846 | if (tx->tx_flags & TX_CMD_FLG_RTS_MSK) { |
2847 | tx->tx_flags &= ~TX_CMD_FLG_RTS_MSK; | |
2848 | tx->tx_flags |= TX_CMD_FLG_CTS_MSK; | |
b481de9c ZY |
2849 | } |
2850 | break; | |
2851 | default: | |
2852 | break; | |
2853 | } | |
87e4f7df TW |
2854 | |
2855 | /* Alternate between antenna A and B for successive frames */ | |
2856 | if (priv->use_ant_b_for_management_frame) { | |
2857 | priv->use_ant_b_for_management_frame = 0; | |
2858 | rate_flags |= RATE_MCS_ANT_B_MSK; | |
2859 | } else { | |
2860 | priv->use_ant_b_for_management_frame = 1; | |
2861 | rate_flags |= RATE_MCS_ANT_A_MSK; | |
2862 | } | |
b481de9c ZY |
2863 | } |
2864 | ||
87e4f7df TW |
2865 | tx->rts_retry_limit = rts_retry_limit; |
2866 | tx->data_retry_limit = data_retry_limit; | |
2867 | tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
b481de9c ZY |
2868 | } |
2869 | ||
c79dd5b5 | 2870 | int iwl4965_hw_get_rx_read(struct iwl_priv *priv) |
b481de9c | 2871 | { |
bb8c093b | 2872 | struct iwl4965_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
2873 | |
2874 | return IWL_GET_BITS(*shared_data, rb_closed_stts_rb_num); | |
2875 | } | |
2876 | ||
c79dd5b5 | 2877 | int iwl4965_hw_get_temperature(struct iwl_priv *priv) |
b481de9c ZY |
2878 | { |
2879 | return priv->temperature; | |
2880 | } | |
2881 | ||
c79dd5b5 | 2882 | unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv, |
bb8c093b | 2883 | struct iwl4965_frame *frame, u8 rate) |
b481de9c | 2884 | { |
bb8c093b | 2885 | struct iwl4965_tx_beacon_cmd *tx_beacon_cmd; |
b481de9c ZY |
2886 | unsigned int frame_size; |
2887 | ||
2888 | tx_beacon_cmd = &frame->u.beacon; | |
2889 | memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd)); | |
2890 | ||
a4062b8f | 2891 | tx_beacon_cmd->tx.sta_id = priv->hw_setting.bcast_sta_id; |
b481de9c ZY |
2892 | tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
2893 | ||
bb8c093b | 2894 | frame_size = iwl4965_fill_beacon_frame(priv, |
b481de9c | 2895 | tx_beacon_cmd->frame, |
bb8c093b | 2896 | iwl4965_broadcast_addr, |
b481de9c ZY |
2897 | sizeof(frame->u) - sizeof(*tx_beacon_cmd)); |
2898 | ||
2899 | BUG_ON(frame_size > MAX_MPDU_SIZE); | |
2900 | tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); | |
2901 | ||
2902 | if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP)) | |
2903 | tx_beacon_cmd->tx.rate_n_flags = | |
bb8c093b | 2904 | iwl4965_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK); |
b481de9c ZY |
2905 | else |
2906 | tx_beacon_cmd->tx.rate_n_flags = | |
bb8c093b | 2907 | iwl4965_hw_set_rate_n_flags(rate, 0); |
b481de9c ZY |
2908 | |
2909 | tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK | | |
2910 | TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK); | |
2911 | return (sizeof(*tx_beacon_cmd) + frame_size); | |
2912 | } | |
2913 | ||
8b6eaea8 CB |
2914 | /* |
2915 | * Tell 4965 where to find circular buffer of Tx Frame Descriptors for | |
2916 | * given Tx queue, and enable the DMA channel used for that queue. | |
2917 | * | |
2918 | * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA | |
2919 | * channels supported in hardware. | |
2920 | */ | |
c79dd5b5 | 2921 | int iwl4965_hw_tx_queue_init(struct iwl_priv *priv, struct iwl4965_tx_queue *txq) |
b481de9c ZY |
2922 | { |
2923 | int rc; | |
2924 | unsigned long flags; | |
2925 | int txq_id = txq->q.id; | |
2926 | ||
2927 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 2928 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
2929 | if (rc) { |
2930 | spin_unlock_irqrestore(&priv->lock, flags); | |
2931 | return rc; | |
2932 | } | |
2933 | ||
8b6eaea8 | 2934 | /* Circular buffer (TFD queue in DRAM) physical base address */ |
3395f6e9 | 2935 | iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id), |
b481de9c | 2936 | txq->q.dma_addr >> 8); |
8b6eaea8 CB |
2937 | |
2938 | /* Enable DMA channel, using same id as for TFD queue */ | |
3395f6e9 | 2939 | iwl_write_direct32( |
b481de9c ZY |
2940 | priv, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), |
2941 | IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | | |
2942 | IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL); | |
3395f6e9 | 2943 | iwl_release_nic_access(priv); |
b481de9c ZY |
2944 | spin_unlock_irqrestore(&priv->lock, flags); |
2945 | ||
2946 | return 0; | |
2947 | } | |
2948 | ||
c79dd5b5 | 2949 | int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, |
b481de9c ZY |
2950 | dma_addr_t addr, u16 len) |
2951 | { | |
2952 | int index, is_odd; | |
bb8c093b | 2953 | struct iwl4965_tfd_frame *tfd = ptr; |
b481de9c ZY |
2954 | u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs); |
2955 | ||
8b6eaea8 | 2956 | /* Each TFD can point to a maximum 20 Tx buffers */ |
b481de9c ZY |
2957 | if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) { |
2958 | IWL_ERROR("Error can not send more than %d chunks\n", | |
2959 | MAX_NUM_OF_TBS); | |
2960 | return -EINVAL; | |
2961 | } | |
2962 | ||
2963 | index = num_tbs / 2; | |
2964 | is_odd = num_tbs & 0x1; | |
2965 | ||
2966 | if (!is_odd) { | |
2967 | tfd->pa[index].tb1_addr = cpu_to_le32(addr); | |
2968 | IWL_SET_BITS(tfd->pa[index], tb1_addr_hi, | |
6a218f6f | 2969 | iwl_get_dma_hi_address(addr)); |
b481de9c ZY |
2970 | IWL_SET_BITS(tfd->pa[index], tb1_len, len); |
2971 | } else { | |
2972 | IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16, | |
2973 | (u32) (addr & 0xffff)); | |
2974 | IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16); | |
2975 | IWL_SET_BITS(tfd->pa[index], tb2_len, len); | |
2976 | } | |
2977 | ||
2978 | IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1); | |
2979 | ||
2980 | return 0; | |
2981 | } | |
2982 | ||
c79dd5b5 | 2983 | static void iwl4965_hw_card_show_info(struct iwl_priv *priv) |
b481de9c ZY |
2984 | { |
2985 | u16 hw_version = priv->eeprom.board_revision_4965; | |
2986 | ||
2987 | IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n", | |
2988 | ((hw_version >> 8) & 0x0F), | |
2989 | ((hw_version >> 8) >> 4), (hw_version & 0x00FF)); | |
2990 | ||
2991 | IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n", | |
2992 | priv->eeprom.board_pba_number_4965); | |
2993 | } | |
2994 | ||
2995 | #define IWL_TX_CRC_SIZE 4 | |
2996 | #define IWL_TX_DELIMITER_SIZE 4 | |
2997 | ||
8b6eaea8 CB |
2998 | /** |
2999 | * iwl4965_tx_queue_update_wr_ptr - Set up entry in Tx byte-count array | |
3000 | */ | |
c79dd5b5 | 3001 | int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv, |
bb8c093b | 3002 | struct iwl4965_tx_queue *txq, u16 byte_cnt) |
b481de9c ZY |
3003 | { |
3004 | int len; | |
3005 | int txq_id = txq->q.id; | |
bb8c093b | 3006 | struct iwl4965_shared *shared_data = priv->hw_setting.shared_virt; |
b481de9c ZY |
3007 | |
3008 | if (txq->need_update == 0) | |
3009 | return 0; | |
3010 | ||
3011 | len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE; | |
3012 | ||
8b6eaea8 | 3013 | /* Set up byte count within first 256 entries */ |
b481de9c | 3014 | IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. |
fc4b6853 | 3015 | tfd_offset[txq->q.write_ptr], byte_cnt, len); |
b481de9c | 3016 | |
8b6eaea8 | 3017 | /* If within first 64 entries, duplicate at end */ |
fc4b6853 | 3018 | if (txq->q.write_ptr < IWL4965_MAX_WIN_SIZE) |
b481de9c | 3019 | IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. |
fc4b6853 | 3020 | tfd_offset[IWL4965_QUEUE_SIZE + txq->q.write_ptr], |
b481de9c ZY |
3021 | byte_cnt, len); |
3022 | ||
3023 | return 0; | |
3024 | } | |
3025 | ||
8b6eaea8 CB |
3026 | /** |
3027 | * iwl4965_set_rxon_chain - Set up Rx chain usage in "staging" RXON image | |
3028 | * | |
3029 | * Selects how many and which Rx receivers/antennas/chains to use. | |
3030 | * This should not be used for scan command ... it puts data in wrong place. | |
3031 | */ | |
c79dd5b5 | 3032 | void iwl4965_set_rxon_chain(struct iwl_priv *priv) |
b481de9c ZY |
3033 | { |
3034 | u8 is_single = is_single_stream(priv); | |
3035 | u8 idle_state, rx_state; | |
3036 | ||
3037 | priv->staging_rxon.rx_chain = 0; | |
3038 | rx_state = idle_state = 3; | |
3039 | ||
3040 | /* Tell uCode which antennas are actually connected. | |
3041 | * Before first association, we assume all antennas are connected. | |
3042 | * Just after first association, iwl4965_noise_calibration() | |
3043 | * checks which antennas actually *are* connected. */ | |
3044 | priv->staging_rxon.rx_chain |= | |
3045 | cpu_to_le16(priv->valid_antenna << RXON_RX_CHAIN_VALID_POS); | |
3046 | ||
3047 | /* How many receivers should we use? */ | |
3048 | iwl4965_get_rx_chain_counter(priv, &idle_state, &rx_state); | |
3049 | priv->staging_rxon.rx_chain |= | |
3050 | cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS); | |
3051 | priv->staging_rxon.rx_chain |= | |
3052 | cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS); | |
3053 | ||
3054 | if (!is_single && (rx_state >= 2) && | |
3055 | !test_bit(STATUS_POWER_PMI, &priv->status)) | |
3056 | priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
3057 | else | |
3058 | priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
3059 | ||
3060 | IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain); | |
3061 | } | |
3062 | ||
b481de9c ZY |
3063 | /** |
3064 | * sign_extend - Sign extend a value using specified bit as sign-bit | |
3065 | * | |
3066 | * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1 | |
3067 | * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7. | |
3068 | * | |
3069 | * @param oper value to sign extend | |
3070 | * @param index 0 based bit index (0<=index<32) to sign bit | |
3071 | */ | |
3072 | static s32 sign_extend(u32 oper, int index) | |
3073 | { | |
3074 | u8 shift = 31 - index; | |
3075 | ||
3076 | return (s32)(oper << shift) >> shift; | |
3077 | } | |
3078 | ||
3079 | /** | |
3080 | * iwl4965_get_temperature - return the calibrated temperature (in Kelvin) | |
3081 | * @statistics: Provides the temperature reading from the uCode | |
3082 | * | |
3083 | * A return of <0 indicates bogus data in the statistics | |
3084 | */ | |
c79dd5b5 | 3085 | int iwl4965_get_temperature(const struct iwl_priv *priv) |
b481de9c ZY |
3086 | { |
3087 | s32 temperature; | |
3088 | s32 vt; | |
3089 | s32 R1, R2, R3; | |
3090 | u32 R4; | |
3091 | ||
3092 | if (test_bit(STATUS_TEMPERATURE, &priv->status) && | |
3093 | (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)) { | |
3094 | IWL_DEBUG_TEMP("Running FAT temperature calibration\n"); | |
3095 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]); | |
3096 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]); | |
3097 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]); | |
3098 | R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]); | |
3099 | } else { | |
3100 | IWL_DEBUG_TEMP("Running temperature calibration\n"); | |
3101 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]); | |
3102 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]); | |
3103 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]); | |
3104 | R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]); | |
3105 | } | |
3106 | ||
3107 | /* | |
8b6eaea8 | 3108 | * Temperature is only 23 bits, so sign extend out to 32. |
b481de9c ZY |
3109 | * |
3110 | * NOTE If we haven't received a statistics notification yet | |
3111 | * with an updated temperature, use R4 provided to us in the | |
8b6eaea8 CB |
3112 | * "initialize" ALIVE response. |
3113 | */ | |
b481de9c ZY |
3114 | if (!test_bit(STATUS_TEMPERATURE, &priv->status)) |
3115 | vt = sign_extend(R4, 23); | |
3116 | else | |
3117 | vt = sign_extend( | |
3118 | le32_to_cpu(priv->statistics.general.temperature), 23); | |
3119 | ||
3120 | IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n", | |
3121 | R1, R2, R3, vt); | |
3122 | ||
3123 | if (R3 == R1) { | |
3124 | IWL_ERROR("Calibration conflict R1 == R3\n"); | |
3125 | return -1; | |
3126 | } | |
3127 | ||
3128 | /* Calculate temperature in degrees Kelvin, adjust by 97%. | |
3129 | * Add offset to center the adjustment around 0 degrees Centigrade. */ | |
3130 | temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2); | |
3131 | temperature /= (R3 - R1); | |
3132 | temperature = (temperature * 97) / 100 + | |
3133 | TEMPERATURE_CALIB_KELVIN_OFFSET; | |
3134 | ||
3135 | IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature, | |
3136 | KELVIN_TO_CELSIUS(temperature)); | |
3137 | ||
3138 | return temperature; | |
3139 | } | |
3140 | ||
3141 | /* Adjust Txpower only if temperature variance is greater than threshold. */ | |
3142 | #define IWL_TEMPERATURE_THRESHOLD 3 | |
3143 | ||
3144 | /** | |
3145 | * iwl4965_is_temp_calib_needed - determines if new calibration is needed | |
3146 | * | |
3147 | * If the temperature changed has changed sufficiently, then a recalibration | |
3148 | * is needed. | |
3149 | * | |
3150 | * Assumes caller will replace priv->last_temperature once calibration | |
3151 | * executed. | |
3152 | */ | |
c79dd5b5 | 3153 | static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv) |
b481de9c ZY |
3154 | { |
3155 | int temp_diff; | |
3156 | ||
3157 | if (!test_bit(STATUS_STATISTICS, &priv->status)) { | |
3158 | IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n"); | |
3159 | return 0; | |
3160 | } | |
3161 | ||
3162 | temp_diff = priv->temperature - priv->last_temperature; | |
3163 | ||
3164 | /* get absolute value */ | |
3165 | if (temp_diff < 0) { | |
3166 | IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff); | |
3167 | temp_diff = -temp_diff; | |
3168 | } else if (temp_diff == 0) | |
3169 | IWL_DEBUG_POWER("Same temp, \n"); | |
3170 | else | |
3171 | IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff); | |
3172 | ||
3173 | if (temp_diff < IWL_TEMPERATURE_THRESHOLD) { | |
3174 | IWL_DEBUG_POWER("Thermal txpower calib not needed\n"); | |
3175 | return 0; | |
3176 | } | |
3177 | ||
3178 | IWL_DEBUG_POWER("Thermal txpower calib needed\n"); | |
3179 | ||
3180 | return 1; | |
3181 | } | |
3182 | ||
3183 | /* Calculate noise level, based on measurements during network silence just | |
3184 | * before arriving beacon. This measurement can be done only if we know | |
3185 | * exactly when to expect beacons, therefore only when we're associated. */ | |
c79dd5b5 | 3186 | static void iwl4965_rx_calc_noise(struct iwl_priv *priv) |
b481de9c ZY |
3187 | { |
3188 | struct statistics_rx_non_phy *rx_info | |
3189 | = &(priv->statistics.rx.general); | |
3190 | int num_active_rx = 0; | |
3191 | int total_silence = 0; | |
3192 | int bcn_silence_a = | |
3193 | le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER; | |
3194 | int bcn_silence_b = | |
3195 | le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER; | |
3196 | int bcn_silence_c = | |
3197 | le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER; | |
3198 | ||
3199 | if (bcn_silence_a) { | |
3200 | total_silence += bcn_silence_a; | |
3201 | num_active_rx++; | |
3202 | } | |
3203 | if (bcn_silence_b) { | |
3204 | total_silence += bcn_silence_b; | |
3205 | num_active_rx++; | |
3206 | } | |
3207 | if (bcn_silence_c) { | |
3208 | total_silence += bcn_silence_c; | |
3209 | num_active_rx++; | |
3210 | } | |
3211 | ||
3212 | /* Average among active antennas */ | |
3213 | if (num_active_rx) | |
3214 | priv->last_rx_noise = (total_silence / num_active_rx) - 107; | |
3215 | else | |
3216 | priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; | |
3217 | ||
3218 | IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n", | |
3219 | bcn_silence_a, bcn_silence_b, bcn_silence_c, | |
3220 | priv->last_rx_noise); | |
3221 | } | |
3222 | ||
c79dd5b5 | 3223 | void iwl4965_hw_rx_statistics(struct iwl_priv *priv, struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3224 | { |
bb8c093b | 3225 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
3226 | int change; |
3227 | s32 temp; | |
3228 | ||
3229 | IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n", | |
3230 | (int)sizeof(priv->statistics), pkt->len); | |
3231 | ||
3232 | change = ((priv->statistics.general.temperature != | |
3233 | pkt->u.stats.general.temperature) || | |
3234 | ((priv->statistics.flag & | |
3235 | STATISTICS_REPLY_FLG_FAT_MODE_MSK) != | |
3236 | (pkt->u.stats.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK))); | |
3237 | ||
3238 | memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics)); | |
3239 | ||
3240 | set_bit(STATUS_STATISTICS, &priv->status); | |
3241 | ||
3242 | /* Reschedule the statistics timer to occur in | |
3243 | * REG_RECALIB_PERIOD seconds to ensure we get a | |
3244 | * thermal update even if the uCode doesn't give | |
3245 | * us one */ | |
3246 | mod_timer(&priv->statistics_periodic, jiffies + | |
3247 | msecs_to_jiffies(REG_RECALIB_PERIOD * 1000)); | |
3248 | ||
3249 | if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && | |
3250 | (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) { | |
3251 | iwl4965_rx_calc_noise(priv); | |
c8b0e6e1 | 3252 | #ifdef CONFIG_IWL4965_SENSITIVITY |
b481de9c ZY |
3253 | queue_work(priv->workqueue, &priv->sensitivity_work); |
3254 | #endif | |
3255 | } | |
3256 | ||
ab53d8af MA |
3257 | iwl_leds_background(priv); |
3258 | ||
b481de9c ZY |
3259 | /* If the hardware hasn't reported a change in |
3260 | * temperature then don't bother computing a | |
3261 | * calibrated temperature value */ | |
3262 | if (!change) | |
3263 | return; | |
3264 | ||
3265 | temp = iwl4965_get_temperature(priv); | |
3266 | if (temp < 0) | |
3267 | return; | |
3268 | ||
3269 | if (priv->temperature != temp) { | |
3270 | if (priv->temperature) | |
3271 | IWL_DEBUG_TEMP("Temperature changed " | |
3272 | "from %dC to %dC\n", | |
3273 | KELVIN_TO_CELSIUS(priv->temperature), | |
3274 | KELVIN_TO_CELSIUS(temp)); | |
3275 | else | |
3276 | IWL_DEBUG_TEMP("Temperature " | |
3277 | "initialized to %dC\n", | |
3278 | KELVIN_TO_CELSIUS(temp)); | |
3279 | } | |
3280 | ||
3281 | priv->temperature = temp; | |
3282 | set_bit(STATUS_TEMPERATURE, &priv->status); | |
3283 | ||
3284 | if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && | |
3285 | iwl4965_is_temp_calib_needed(priv)) | |
3286 | queue_work(priv->workqueue, &priv->txpower_work); | |
3287 | } | |
3288 | ||
c79dd5b5 | 3289 | static void iwl4965_add_radiotap(struct iwl_priv *priv, |
12342c47 ZY |
3290 | struct sk_buff *skb, |
3291 | struct iwl4965_rx_phy_res *rx_start, | |
3292 | struct ieee80211_rx_status *stats, | |
3293 | u32 ampdu_status) | |
3294 | { | |
3295 | s8 signal = stats->ssi; | |
3296 | s8 noise = 0; | |
8318d78a | 3297 | int rate = stats->rate_idx; |
12342c47 ZY |
3298 | u64 tsf = stats->mactime; |
3299 | __le16 phy_flags_hw = rx_start->phy_flags; | |
3300 | struct iwl4965_rt_rx_hdr { | |
3301 | struct ieee80211_radiotap_header rt_hdr; | |
3302 | __le64 rt_tsf; /* TSF */ | |
3303 | u8 rt_flags; /* radiotap packet flags */ | |
3304 | u8 rt_rate; /* rate in 500kb/s */ | |
3305 | __le16 rt_channelMHz; /* channel in MHz */ | |
3306 | __le16 rt_chbitmask; /* channel bitfield */ | |
3307 | s8 rt_dbmsignal; /* signal in dBm, kluged to signed */ | |
3308 | s8 rt_dbmnoise; | |
3309 | u8 rt_antenna; /* antenna number */ | |
3310 | } __attribute__ ((packed)) *iwl4965_rt; | |
3311 | ||
3312 | /* TODO: We won't have enough headroom for HT frames. Fix it later. */ | |
3313 | if (skb_headroom(skb) < sizeof(*iwl4965_rt)) { | |
3314 | if (net_ratelimit()) | |
3315 | printk(KERN_ERR "not enough headroom [%d] for " | |
01c20986 | 3316 | "radiotap head [%zd]\n", |
12342c47 ZY |
3317 | skb_headroom(skb), sizeof(*iwl4965_rt)); |
3318 | return; | |
3319 | } | |
3320 | ||
3321 | /* put radiotap header in front of 802.11 header and data */ | |
3322 | iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt)); | |
3323 | ||
3324 | /* initialise radiotap header */ | |
3325 | iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
3326 | iwl4965_rt->rt_hdr.it_pad = 0; | |
3327 | ||
3328 | /* total header + data */ | |
3329 | put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt)), | |
3330 | &iwl4965_rt->rt_hdr.it_len); | |
3331 | ||
3332 | /* Indicate all the fields we add to the radiotap header */ | |
3333 | put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | | |
3334 | (1 << IEEE80211_RADIOTAP_FLAGS) | | |
3335 | (1 << IEEE80211_RADIOTAP_RATE) | | |
3336 | (1 << IEEE80211_RADIOTAP_CHANNEL) | | |
3337 | (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | | |
3338 | (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | | |
3339 | (1 << IEEE80211_RADIOTAP_ANTENNA)), | |
3340 | &iwl4965_rt->rt_hdr.it_present); | |
3341 | ||
3342 | /* Zero the flags, we'll add to them as we go */ | |
3343 | iwl4965_rt->rt_flags = 0; | |
3344 | ||
3345 | put_unaligned(cpu_to_le64(tsf), &iwl4965_rt->rt_tsf); | |
3346 | ||
3347 | iwl4965_rt->rt_dbmsignal = signal; | |
3348 | iwl4965_rt->rt_dbmnoise = noise; | |
3349 | ||
3350 | /* Convert the channel frequency and set the flags */ | |
3351 | put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz); | |
3352 | if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) | |
3353 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | | |
3354 | IEEE80211_CHAN_5GHZ), | |
3355 | &iwl4965_rt->rt_chbitmask); | |
3356 | else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) | |
3357 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK | | |
3358 | IEEE80211_CHAN_2GHZ), | |
3359 | &iwl4965_rt->rt_chbitmask); | |
3360 | else /* 802.11g */ | |
3361 | put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | | |
3362 | IEEE80211_CHAN_2GHZ), | |
3363 | &iwl4965_rt->rt_chbitmask); | |
3364 | ||
12342c47 ZY |
3365 | if (rate == -1) |
3366 | iwl4965_rt->rt_rate = 0; | |
3367 | else | |
3368 | iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee; | |
3369 | ||
3370 | /* | |
3371 | * "antenna number" | |
3372 | * | |
3373 | * It seems that the antenna field in the phy flags value | |
3374 | * is actually a bitfield. This is undefined by radiotap, | |
3375 | * it wants an actual antenna number but I always get "7" | |
3376 | * for most legacy frames I receive indicating that the | |
3377 | * same frame was received on all three RX chains. | |
3378 | * | |
3379 | * I think this field should be removed in favour of a | |
3380 | * new 802.11n radiotap field "RX chains" that is defined | |
3381 | * as a bitmask. | |
3382 | */ | |
3383 | iwl4965_rt->rt_antenna = | |
3384 | le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; | |
3385 | ||
3386 | /* set the preamble flag if appropriate */ | |
3387 | if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
3388 | iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; | |
3389 | ||
3390 | stats->flag |= RX_FLAG_RADIOTAP; | |
3391 | } | |
3392 | ||
19758bef TW |
3393 | static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len) |
3394 | { | |
3395 | /* 0 - mgmt, 1 - cnt, 2 - data */ | |
3396 | int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2; | |
3397 | priv->rx_stats[idx].cnt++; | |
3398 | priv->rx_stats[idx].bytes += len; | |
3399 | } | |
3400 | ||
17e476b8 EG |
3401 | static u32 iwl4965_translate_rx_status(u32 decrypt_in) |
3402 | { | |
3403 | u32 decrypt_out = 0; | |
3404 | ||
3405 | if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) == | |
3406 | RX_RES_STATUS_STATION_FOUND) | |
3407 | decrypt_out |= (RX_RES_STATUS_STATION_FOUND | | |
3408 | RX_RES_STATUS_NO_STATION_INFO_MISMATCH); | |
3409 | ||
3410 | decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK); | |
3411 | ||
3412 | /* packet was not encrypted */ | |
3413 | if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == | |
3414 | RX_RES_STATUS_SEC_TYPE_NONE) | |
3415 | return decrypt_out; | |
3416 | ||
3417 | /* packet was encrypted with unknown alg */ | |
3418 | if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == | |
3419 | RX_RES_STATUS_SEC_TYPE_ERR) | |
3420 | return decrypt_out; | |
3421 | ||
3422 | /* decryption was not done in HW */ | |
3423 | if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) != | |
3424 | RX_MPDU_RES_STATUS_DEC_DONE_MSK) | |
3425 | return decrypt_out; | |
3426 | ||
3427 | switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) { | |
3428 | ||
3429 | case RX_RES_STATUS_SEC_TYPE_CCMP: | |
3430 | /* alg is CCM: check MIC only */ | |
3431 | if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK)) | |
3432 | /* Bad MIC */ | |
3433 | decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; | |
3434 | else | |
3435 | decrypt_out |= RX_RES_STATUS_DECRYPT_OK; | |
3436 | ||
3437 | break; | |
3438 | ||
3439 | case RX_RES_STATUS_SEC_TYPE_TKIP: | |
3440 | if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) { | |
3441 | /* Bad TTAK */ | |
3442 | decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK; | |
3443 | break; | |
3444 | } | |
3445 | /* fall through if TTAK OK */ | |
3446 | default: | |
3447 | if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK)) | |
3448 | decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; | |
3449 | else | |
3450 | decrypt_out |= RX_RES_STATUS_DECRYPT_OK; | |
3451 | break; | |
3452 | }; | |
3453 | ||
3454 | IWL_DEBUG_RX("decrypt_in:0x%x decrypt_out = 0x%x\n", | |
3455 | decrypt_in, decrypt_out); | |
3456 | ||
3457 | return decrypt_out; | |
3458 | } | |
3459 | ||
c79dd5b5 | 3460 | static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data, |
b481de9c | 3461 | int include_phy, |
bb8c093b | 3462 | struct iwl4965_rx_mem_buffer *rxb, |
b481de9c ZY |
3463 | struct ieee80211_rx_status *stats) |
3464 | { | |
bb8c093b | 3465 | struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data; |
b481de9c ZY |
3466 | struct iwl4965_rx_phy_res *rx_start = (include_phy) ? |
3467 | (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL; | |
3468 | struct ieee80211_hdr *hdr; | |
3469 | u16 len; | |
3470 | __le32 *rx_end; | |
3471 | unsigned int skblen; | |
3472 | u32 ampdu_status; | |
17e476b8 | 3473 | u32 ampdu_status_legacy; |
b481de9c ZY |
3474 | |
3475 | if (!include_phy && priv->last_phy_res[0]) | |
3476 | rx_start = (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1]; | |
3477 | ||
3478 | if (!rx_start) { | |
3479 | IWL_ERROR("MPDU frame without a PHY data\n"); | |
3480 | return; | |
3481 | } | |
3482 | if (include_phy) { | |
3483 | hdr = (struct ieee80211_hdr *)((u8 *) & rx_start[1] + | |
3484 | rx_start->cfg_phy_cnt); | |
3485 | ||
3486 | len = le16_to_cpu(rx_start->byte_count); | |
3487 | ||
3488 | rx_end = (__le32 *) ((u8 *) & pkt->u.raw[0] + | |
3489 | sizeof(struct iwl4965_rx_phy_res) + | |
3490 | rx_start->cfg_phy_cnt + len); | |
3491 | ||
3492 | } else { | |
3493 | struct iwl4965_rx_mpdu_res_start *amsdu = | |
3494 | (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw; | |
3495 | ||
3496 | hdr = (struct ieee80211_hdr *)(pkt->u.raw + | |
3497 | sizeof(struct iwl4965_rx_mpdu_res_start)); | |
3498 | len = le16_to_cpu(amsdu->byte_count); | |
3499 | rx_start->byte_count = amsdu->byte_count; | |
3500 | rx_end = (__le32 *) (((u8 *) hdr) + len); | |
3501 | } | |
9ee1ba47 | 3502 | if (len > priv->hw_setting.max_pkt_size || len < 16) { |
12342c47 | 3503 | IWL_WARNING("byte count out of range [16,4K] : %d\n", len); |
b481de9c ZY |
3504 | return; |
3505 | } | |
3506 | ||
3507 | ampdu_status = le32_to_cpu(*rx_end); | |
3508 | skblen = ((u8 *) rx_end - (u8 *) & pkt->u.raw[0]) + sizeof(u32); | |
3509 | ||
17e476b8 EG |
3510 | if (!include_phy) { |
3511 | /* New status scheme, need to translate */ | |
3512 | ampdu_status_legacy = ampdu_status; | |
3513 | ampdu_status = iwl4965_translate_rx_status(ampdu_status); | |
3514 | } | |
3515 | ||
b481de9c ZY |
3516 | /* start from MAC */ |
3517 | skb_reserve(rxb->skb, (void *)hdr - (void *)pkt); | |
3518 | skb_put(rxb->skb, len); /* end where data ends */ | |
3519 | ||
3520 | /* We only process data packets if the interface is open */ | |
3521 | if (unlikely(!priv->is_open)) { | |
3522 | IWL_DEBUG_DROP_LIMIT | |
3523 | ("Dropping packet while interface is not open.\n"); | |
3524 | return; | |
3525 | } | |
3526 | ||
b481de9c ZY |
3527 | stats->flag = 0; |
3528 | hdr = (struct ieee80211_hdr *)rxb->skb->data; | |
3529 | ||
1ea87396 | 3530 | if (priv->cfg->mod_params->hw_crypto) |
bb8c093b | 3531 | iwl4965_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats); |
b481de9c | 3532 | |
12342c47 ZY |
3533 | if (priv->add_radiotap) |
3534 | iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status); | |
3535 | ||
19758bef | 3536 | iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len); |
b481de9c ZY |
3537 | ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); |
3538 | priv->alloc_rxb_skb--; | |
3539 | rxb->skb = NULL; | |
b481de9c ZY |
3540 | } |
3541 | ||
3542 | /* Calc max signal level (dBm) among 3 possible receivers */ | |
3543 | static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res *rx_resp) | |
3544 | { | |
3545 | /* data from PHY/DSP regarding signal strength, etc., | |
3546 | * contents are always there, not configurable by host. */ | |
3547 | struct iwl4965_rx_non_cfg_phy *ncphy = | |
3548 | (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy; | |
3549 | u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL_AGC_DB_MASK) | |
3550 | >> IWL_AGC_DB_POS; | |
3551 | ||
3552 | u32 valid_antennae = | |
3553 | (le16_to_cpu(rx_resp->phy_flags) & RX_PHY_FLAGS_ANTENNAE_MASK) | |
3554 | >> RX_PHY_FLAGS_ANTENNAE_OFFSET; | |
3555 | u8 max_rssi = 0; | |
3556 | u32 i; | |
3557 | ||
3558 | /* Find max rssi among 3 possible receivers. | |
3559 | * These values are measured by the digital signal processor (DSP). | |
3560 | * They should stay fairly constant even as the signal strength varies, | |
3561 | * if the radio's automatic gain control (AGC) is working right. | |
3562 | * AGC value (see below) will provide the "interesting" info. */ | |
3563 | for (i = 0; i < 3; i++) | |
3564 | if (valid_antennae & (1 << i)) | |
3565 | max_rssi = max(ncphy->rssi_info[i << 1], max_rssi); | |
3566 | ||
3567 | IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n", | |
3568 | ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4], | |
3569 | max_rssi, agc); | |
3570 | ||
3571 | /* dBm = max_rssi dB - agc dB - constant. | |
3572 | * Higher AGC (higher radio gain) means lower signal. */ | |
3573 | return (max_rssi - agc - IWL_RSSI_OFFSET); | |
3574 | } | |
3575 | ||
c8b0e6e1 | 3576 | #ifdef CONFIG_IWL4965_HT |
b481de9c ZY |
3577 | |
3578 | /* Parsed Information Elements */ | |
3579 | struct ieee802_11_elems { | |
3580 | u8 *ds_params; | |
3581 | u8 ds_params_len; | |
3582 | u8 *tim; | |
3583 | u8 tim_len; | |
3584 | u8 *ibss_params; | |
3585 | u8 ibss_params_len; | |
3586 | u8 *erp_info; | |
3587 | u8 erp_info_len; | |
3588 | u8 *ht_cap_param; | |
3589 | u8 ht_cap_param_len; | |
3590 | u8 *ht_extra_param; | |
3591 | u8 ht_extra_param_len; | |
3592 | }; | |
3593 | ||
3594 | static int parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems) | |
3595 | { | |
3596 | size_t left = len; | |
3597 | u8 *pos = start; | |
3598 | int unknown = 0; | |
3599 | ||
3600 | memset(elems, 0, sizeof(*elems)); | |
3601 | ||
3602 | while (left >= 2) { | |
3603 | u8 id, elen; | |
3604 | ||
3605 | id = *pos++; | |
3606 | elen = *pos++; | |
3607 | left -= 2; | |
3608 | ||
3609 | if (elen > left) | |
3610 | return -1; | |
3611 | ||
3612 | switch (id) { | |
3613 | case WLAN_EID_DS_PARAMS: | |
3614 | elems->ds_params = pos; | |
3615 | elems->ds_params_len = elen; | |
3616 | break; | |
3617 | case WLAN_EID_TIM: | |
3618 | elems->tim = pos; | |
3619 | elems->tim_len = elen; | |
3620 | break; | |
3621 | case WLAN_EID_IBSS_PARAMS: | |
3622 | elems->ibss_params = pos; | |
3623 | elems->ibss_params_len = elen; | |
3624 | break; | |
3625 | case WLAN_EID_ERP_INFO: | |
3626 | elems->erp_info = pos; | |
3627 | elems->erp_info_len = elen; | |
3628 | break; | |
3629 | case WLAN_EID_HT_CAPABILITY: | |
3630 | elems->ht_cap_param = pos; | |
3631 | elems->ht_cap_param_len = elen; | |
3632 | break; | |
3633 | case WLAN_EID_HT_EXTRA_INFO: | |
3634 | elems->ht_extra_param = pos; | |
3635 | elems->ht_extra_param_len = elen; | |
3636 | break; | |
3637 | default: | |
3638 | unknown++; | |
3639 | break; | |
3640 | } | |
3641 | ||
3642 | left -= elen; | |
3643 | pos += elen; | |
3644 | } | |
3645 | ||
3646 | return 0; | |
3647 | } | |
326eeee8 | 3648 | |
1ea87396 AK |
3649 | void iwl4965_init_ht_hw_capab(struct iwl_priv *priv, |
3650 | struct ieee80211_ht_info *ht_info, | |
78330fdd | 3651 | enum ieee80211_band band) |
326eeee8 RR |
3652 | { |
3653 | ht_info->cap = 0; | |
3654 | memset(ht_info->supp_mcs_set, 0, 16); | |
3655 | ||
3656 | ht_info->ht_supported = 1; | |
3657 | ||
78330fdd | 3658 | if (band == IEEE80211_BAND_5GHZ) { |
326eeee8 RR |
3659 | ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH; |
3660 | ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40; | |
3661 | ht_info->supp_mcs_set[4] = 0x01; | |
3662 | } | |
3663 | ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD; | |
3664 | ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20; | |
3665 | ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS & | |
3666 | (IWL_MIMO_PS_NONE << 2)); | |
1ea87396 AK |
3667 | |
3668 | if (priv->cfg->mod_params->amsdu_size_8K) | |
9ee1ba47 | 3669 | ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU; |
326eeee8 RR |
3670 | |
3671 | ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; | |
3672 | ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; | |
3673 | ||
3674 | ht_info->supp_mcs_set[0] = 0xFF; | |
3675 | ht_info->supp_mcs_set[1] = 0xFF; | |
3676 | } | |
c8b0e6e1 | 3677 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c | 3678 | |
c79dd5b5 | 3679 | static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
b481de9c ZY |
3680 | { |
3681 | unsigned long flags; | |
3682 | ||
3683 | spin_lock_irqsave(&priv->sta_lock, flags); | |
3684 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; | |
3685 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
3686 | priv->stations[sta_id].sta.sta.modify_mask = 0; | |
3687 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
3688 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
3689 | ||
bb8c093b | 3690 | iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
b481de9c ZY |
3691 | } |
3692 | ||
c79dd5b5 | 3693 | static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr) |
b481de9c ZY |
3694 | { |
3695 | /* FIXME: need locking over ps_status ??? */ | |
bb8c093b | 3696 | u8 sta_id = iwl4965_hw_find_station(priv, addr); |
b481de9c ZY |
3697 | |
3698 | if (sta_id != IWL_INVALID_STATION) { | |
3699 | u8 sta_awake = priv->stations[sta_id]. | |
3700 | ps_status == STA_PS_STATUS_WAKE; | |
3701 | ||
3702 | if (sta_awake && ps_bit) | |
3703 | priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP; | |
3704 | else if (!sta_awake && !ps_bit) { | |
3705 | iwl4965_sta_modify_ps_wake(priv, sta_id); | |
3706 | priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE; | |
3707 | } | |
3708 | } | |
3709 | } | |
0a6857e7 | 3710 | #ifdef CONFIG_IWLWIFI_DEBUG |
17744ff6 TW |
3711 | |
3712 | /** | |
3713 | * iwl4965_dbg_report_frame - dump frame to syslog during debug sessions | |
3714 | * | |
3715 | * You may hack this function to show different aspects of received frames, | |
3716 | * including selective frame dumps. | |
3717 | * group100 parameter selects whether to show 1 out of 100 good frames. | |
3718 | * | |
3719 | * TODO: This was originally written for 3945, need to audit for | |
3720 | * proper operation with 4965. | |
3721 | */ | |
c79dd5b5 | 3722 | static void iwl4965_dbg_report_frame(struct iwl_priv *priv, |
17744ff6 TW |
3723 | struct iwl4965_rx_packet *pkt, |
3724 | struct ieee80211_hdr *header, int group100) | |
3725 | { | |
3726 | u32 to_us; | |
3727 | u32 print_summary = 0; | |
3728 | u32 print_dump = 0; /* set to 1 to dump all frames' contents */ | |
3729 | u32 hundred = 0; | |
3730 | u32 dataframe = 0; | |
3731 | u16 fc; | |
3732 | u16 seq_ctl; | |
3733 | u16 channel; | |
3734 | u16 phy_flags; | |
3735 | int rate_sym; | |
3736 | u16 length; | |
3737 | u16 status; | |
3738 | u16 bcn_tmr; | |
3739 | u32 tsf_low; | |
3740 | u64 tsf; | |
3741 | u8 rssi; | |
3742 | u8 agc; | |
3743 | u16 sig_avg; | |
3744 | u16 noise_diff; | |
3745 | struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt); | |
3746 | struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt); | |
3747 | struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt); | |
3748 | u8 *data = IWL_RX_DATA(pkt); | |
3749 | ||
0a6857e7 | 3750 | if (likely(!(iwl_debug_level & IWL_DL_RX))) |
17744ff6 TW |
3751 | return; |
3752 | ||
3753 | /* MAC header */ | |
3754 | fc = le16_to_cpu(header->frame_control); | |
3755 | seq_ctl = le16_to_cpu(header->seq_ctrl); | |
3756 | ||
3757 | /* metadata */ | |
3758 | channel = le16_to_cpu(rx_hdr->channel); | |
3759 | phy_flags = le16_to_cpu(rx_hdr->phy_flags); | |
3760 | rate_sym = rx_hdr->rate; | |
3761 | length = le16_to_cpu(rx_hdr->len); | |
3762 | ||
3763 | /* end-of-frame status and timestamp */ | |
3764 | status = le32_to_cpu(rx_end->status); | |
3765 | bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp); | |
3766 | tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff; | |
3767 | tsf = le64_to_cpu(rx_end->timestamp); | |
3768 | ||
3769 | /* signal statistics */ | |
3770 | rssi = rx_stats->rssi; | |
3771 | agc = rx_stats->agc; | |
3772 | sig_avg = le16_to_cpu(rx_stats->sig_avg); | |
3773 | noise_diff = le16_to_cpu(rx_stats->noise_diff); | |
3774 | ||
3775 | to_us = !compare_ether_addr(header->addr1, priv->mac_addr); | |
3776 | ||
3777 | /* if data frame is to us and all is good, | |
3778 | * (optionally) print summary for only 1 out of every 100 */ | |
3779 | if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) == | |
3780 | (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) { | |
3781 | dataframe = 1; | |
3782 | if (!group100) | |
3783 | print_summary = 1; /* print each frame */ | |
3784 | else if (priv->framecnt_to_us < 100) { | |
3785 | priv->framecnt_to_us++; | |
3786 | print_summary = 0; | |
3787 | } else { | |
3788 | priv->framecnt_to_us = 0; | |
3789 | print_summary = 1; | |
3790 | hundred = 1; | |
3791 | } | |
3792 | } else { | |
3793 | /* print summary for all other frames */ | |
3794 | print_summary = 1; | |
3795 | } | |
3796 | ||
3797 | if (print_summary) { | |
3798 | char *title; | |
3799 | int rate_idx; | |
3800 | u32 bitrate; | |
3801 | ||
3802 | if (hundred) | |
3803 | title = "100Frames"; | |
3804 | else if (fc & IEEE80211_FCTL_RETRY) | |
3805 | title = "Retry"; | |
3806 | else if (ieee80211_is_assoc_response(fc)) | |
3807 | title = "AscRsp"; | |
3808 | else if (ieee80211_is_reassoc_response(fc)) | |
3809 | title = "RasRsp"; | |
3810 | else if (ieee80211_is_probe_response(fc)) { | |
3811 | title = "PrbRsp"; | |
3812 | print_dump = 1; /* dump frame contents */ | |
3813 | } else if (ieee80211_is_beacon(fc)) { | |
3814 | title = "Beacon"; | |
3815 | print_dump = 1; /* dump frame contents */ | |
3816 | } else if (ieee80211_is_atim(fc)) | |
3817 | title = "ATIM"; | |
3818 | else if (ieee80211_is_auth(fc)) | |
3819 | title = "Auth"; | |
3820 | else if (ieee80211_is_deauth(fc)) | |
3821 | title = "DeAuth"; | |
3822 | else if (ieee80211_is_disassoc(fc)) | |
3823 | title = "DisAssoc"; | |
3824 | else | |
3825 | title = "Frame"; | |
3826 | ||
3827 | rate_idx = iwl4965_hwrate_to_plcp_idx(rate_sym); | |
3828 | if (unlikely(rate_idx == -1)) | |
3829 | bitrate = 0; | |
3830 | else | |
3831 | bitrate = iwl4965_rates[rate_idx].ieee / 2; | |
3832 | ||
3833 | /* print frame summary. | |
3834 | * MAC addresses show just the last byte (for brevity), | |
3835 | * but you can hack it to show more, if you'd like to. */ | |
3836 | if (dataframe) | |
3837 | IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, " | |
3838 | "len=%u, rssi=%d, chnl=%d, rate=%u, \n", | |
3839 | title, fc, header->addr1[5], | |
3840 | length, rssi, channel, bitrate); | |
3841 | else { | |
3842 | /* src/dst addresses assume managed mode */ | |
3843 | IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, " | |
3844 | "src=0x%02x, rssi=%u, tim=%lu usec, " | |
3845 | "phy=0x%02x, chnl=%d\n", | |
3846 | title, fc, header->addr1[5], | |
3847 | header->addr3[5], rssi, | |
3848 | tsf_low - priv->scan_start_tsf, | |
3849 | phy_flags, channel); | |
3850 | } | |
3851 | } | |
3852 | if (print_dump) | |
0a6857e7 | 3853 | iwl_print_hex_dump(IWL_DL_RX, data, length); |
17744ff6 TW |
3854 | } |
3855 | #else | |
c79dd5b5 | 3856 | static inline void iwl4965_dbg_report_frame(struct iwl_priv *priv, |
17744ff6 TW |
3857 | struct iwl4965_rx_packet *pkt, |
3858 | struct ieee80211_hdr *header, | |
3859 | int group100) | |
3860 | { | |
3861 | } | |
3862 | #endif | |
3863 | ||
b481de9c | 3864 | |
7878a5a4 MA |
3865 | #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
3866 | ||
857485c0 | 3867 | /* Called for REPLY_RX (legacy ABG frames), or |
b481de9c | 3868 | * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */ |
c79dd5b5 | 3869 | static void iwl4965_rx_reply_rx(struct iwl_priv *priv, |
bb8c093b | 3870 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 3871 | { |
17744ff6 TW |
3872 | struct ieee80211_hdr *header; |
3873 | struct ieee80211_rx_status rx_status; | |
bb8c093b | 3874 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
3875 | /* Use phy data (Rx signal strength, etc.) contained within |
3876 | * this rx packet for legacy frames, | |
3877 | * or phy data cached from REPLY_RX_PHY_CMD for HT frames. */ | |
857485c0 | 3878 | int include_phy = (pkt->hdr.cmd == REPLY_RX); |
b481de9c ZY |
3879 | struct iwl4965_rx_phy_res *rx_start = (include_phy) ? |
3880 | (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : | |
3881 | (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1]; | |
3882 | __le32 *rx_end; | |
3883 | unsigned int len = 0; | |
b481de9c | 3884 | u16 fc; |
b481de9c ZY |
3885 | u8 network_packet; |
3886 | ||
17744ff6 TW |
3887 | rx_status.mactime = le64_to_cpu(rx_start->timestamp); |
3888 | rx_status.freq = ieee80211chan2mhz(le16_to_cpu(rx_start->channel)); | |
3889 | rx_status.band = (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? | |
3890 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
3891 | rx_status.rate_idx = iwl4965_hwrate_to_plcp_idx( | |
3892 | le32_to_cpu(rx_start->rate_n_flags)); | |
3893 | ||
3894 | if (rx_status.band == IEEE80211_BAND_5GHZ) | |
3895 | rx_status.rate_idx -= IWL_FIRST_OFDM_RATE; | |
3896 | ||
3897 | rx_status.antenna = 0; | |
3898 | rx_status.flag = 0; | |
3899 | ||
b481de9c ZY |
3900 | if ((unlikely(rx_start->cfg_phy_cnt > 20))) { |
3901 | IWL_DEBUG_DROP | |
3902 | ("dsp size out of range [0,20]: " | |
3903 | "%d/n", rx_start->cfg_phy_cnt); | |
3904 | return; | |
3905 | } | |
17744ff6 | 3906 | |
b481de9c ZY |
3907 | if (!include_phy) { |
3908 | if (priv->last_phy_res[0]) | |
3909 | rx_start = (struct iwl4965_rx_phy_res *) | |
3910 | &priv->last_phy_res[1]; | |
3911 | else | |
3912 | rx_start = NULL; | |
3913 | } | |
3914 | ||
3915 | if (!rx_start) { | |
3916 | IWL_ERROR("MPDU frame without a PHY data\n"); | |
3917 | return; | |
3918 | } | |
3919 | ||
3920 | if (include_phy) { | |
3921 | header = (struct ieee80211_hdr *)((u8 *) & rx_start[1] | |
3922 | + rx_start->cfg_phy_cnt); | |
3923 | ||
3924 | len = le16_to_cpu(rx_start->byte_count); | |
17744ff6 | 3925 | rx_end = (__le32 *)(pkt->u.raw + rx_start->cfg_phy_cnt + |
b481de9c ZY |
3926 | sizeof(struct iwl4965_rx_phy_res) + len); |
3927 | } else { | |
3928 | struct iwl4965_rx_mpdu_res_start *amsdu = | |
3929 | (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw; | |
3930 | ||
3931 | header = (void *)(pkt->u.raw + | |
3932 | sizeof(struct iwl4965_rx_mpdu_res_start)); | |
3933 | len = le16_to_cpu(amsdu->byte_count); | |
3934 | rx_end = (__le32 *) (pkt->u.raw + | |
3935 | sizeof(struct iwl4965_rx_mpdu_res_start) + len); | |
3936 | } | |
3937 | ||
3938 | if (!(*rx_end & RX_RES_STATUS_NO_CRC32_ERROR) || | |
3939 | !(*rx_end & RX_RES_STATUS_NO_RXE_OVERFLOW)) { | |
3940 | IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n", | |
3941 | le32_to_cpu(*rx_end)); | |
3942 | return; | |
3943 | } | |
3944 | ||
3945 | priv->ucode_beacon_time = le32_to_cpu(rx_start->beacon_time_stamp); | |
3946 | ||
b481de9c | 3947 | /* Find max signal strength (dBm) among 3 antenna/receiver chains */ |
17744ff6 | 3948 | rx_status.ssi = iwl4965_calc_rssi(rx_start); |
b481de9c ZY |
3949 | |
3950 | /* Meaningful noise values are available only from beacon statistics, | |
3951 | * which are gathered only when associated, and indicate noise | |
3952 | * only for the associated network channel ... | |
3953 | * Ignore these noise values while scanning (other channels) */ | |
bb8c093b | 3954 | if (iwl4965_is_associated(priv) && |
b481de9c | 3955 | !test_bit(STATUS_SCANNING, &priv->status)) { |
17744ff6 TW |
3956 | rx_status.noise = priv->last_rx_noise; |
3957 | rx_status.signal = iwl4965_calc_sig_qual(rx_status.ssi, | |
3958 | rx_status.noise); | |
b481de9c | 3959 | } else { |
17744ff6 TW |
3960 | rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE; |
3961 | rx_status.signal = iwl4965_calc_sig_qual(rx_status.ssi, 0); | |
b481de9c ZY |
3962 | } |
3963 | ||
3964 | /* Reset beacon noise level if not associated. */ | |
bb8c093b | 3965 | if (!iwl4965_is_associated(priv)) |
b481de9c ZY |
3966 | priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; |
3967 | ||
17744ff6 TW |
3968 | /* Set "1" to report good data frames in groups of 100 */ |
3969 | /* FIXME: need to optimze the call: */ | |
3970 | iwl4965_dbg_report_frame(priv, pkt, header, 1); | |
3971 | ||
3972 | IWL_DEBUG_STATS_LIMIT("Rssi %d, noise %d, qual %d, TSF %llu\n", | |
3973 | rx_status.ssi, rx_status.noise, rx_status.signal, | |
06501d29 | 3974 | (unsigned long long)rx_status.mactime); |
b481de9c | 3975 | |
bb8c093b | 3976 | network_packet = iwl4965_is_network_packet(priv, header); |
b481de9c | 3977 | if (network_packet) { |
17744ff6 | 3978 | priv->last_rx_rssi = rx_status.ssi; |
b481de9c ZY |
3979 | priv->last_beacon_time = priv->ucode_beacon_time; |
3980 | priv->last_tsf = le64_to_cpu(rx_start->timestamp); | |
3981 | } | |
3982 | ||
3983 | fc = le16_to_cpu(header->frame_control); | |
3984 | switch (fc & IEEE80211_FCTL_FTYPE) { | |
3985 | case IEEE80211_FTYPE_MGMT: | |
3986 | ||
3987 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) | |
3988 | iwl4965_update_ps_mode(priv, fc & IEEE80211_FCTL_PM, | |
3989 | header->addr2); | |
3990 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3991 | case IEEE80211_STYPE_PROBE_RESP: | |
3992 | case IEEE80211_STYPE_BEACON: | |
3993 | if ((priv->iw_mode == IEEE80211_IF_TYPE_STA && | |
3994 | !compare_ether_addr(header->addr2, priv->bssid)) || | |
3995 | (priv->iw_mode == IEEE80211_IF_TYPE_IBSS && | |
3996 | !compare_ether_addr(header->addr3, priv->bssid))) { | |
3997 | struct ieee80211_mgmt *mgmt = | |
3998 | (struct ieee80211_mgmt *)header; | |
3999 | u64 timestamp = | |
4000 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
4001 | ||
4002 | priv->timestamp0 = timestamp & 0xFFFFFFFF; | |
4003 | priv->timestamp1 = | |
4004 | (timestamp >> 32) & 0xFFFFFFFF; | |
4005 | priv->beacon_int = le16_to_cpu( | |
4006 | mgmt->u.beacon.beacon_int); | |
4007 | if (priv->call_post_assoc_from_beacon && | |
4008 | (priv->iw_mode == IEEE80211_IF_TYPE_STA)) { | |
4009 | priv->call_post_assoc_from_beacon = 0; | |
4010 | queue_work(priv->workqueue, | |
4011 | &priv->post_associate.work); | |
4012 | } | |
4013 | } | |
4014 | break; | |
4015 | ||
4016 | case IEEE80211_STYPE_ACTION: | |
4017 | break; | |
4018 | ||
4019 | /* | |
471b3efd JB |
4020 | * TODO: Use the new callback function from |
4021 | * mac80211 instead of sniffing these packets. | |
b481de9c ZY |
4022 | */ |
4023 | case IEEE80211_STYPE_ASSOC_RESP: | |
4024 | case IEEE80211_STYPE_REASSOC_RESP: | |
052c4b9f | 4025 | if (network_packet) { |
c8b0e6e1 | 4026 | #ifdef CONFIG_IWL4965_HT |
b481de9c ZY |
4027 | u8 *pos = NULL; |
4028 | struct ieee802_11_elems elems; | |
c8b0e6e1 | 4029 | #endif /*CONFIG_IWL4965_HT */ |
b481de9c ZY |
4030 | struct ieee80211_mgmt *mgnt = |
4031 | (struct ieee80211_mgmt *)header; | |
4032 | ||
7878a5a4 MA |
4033 | /* We have just associated, give some |
4034 | * time for the 4-way handshake if | |
4035 | * any. Don't start scan too early. */ | |
4036 | priv->next_scan_jiffies = jiffies + | |
4037 | IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; | |
4038 | ||
b481de9c ZY |
4039 | priv->assoc_id = (~((1 << 15) | (1 << 14)) |
4040 | & le16_to_cpu(mgnt->u.assoc_resp.aid)); | |
4041 | priv->assoc_capability = | |
4042 | le16_to_cpu( | |
4043 | mgnt->u.assoc_resp.capab_info); | |
c8b0e6e1 | 4044 | #ifdef CONFIG_IWL4965_HT |
b481de9c ZY |
4045 | pos = mgnt->u.assoc_resp.variable; |
4046 | if (!parse_elems(pos, | |
4047 | len - (pos - (u8 *) mgnt), | |
4048 | &elems)) { | |
4049 | if (elems.ht_extra_param && | |
4050 | elems.ht_cap_param) | |
4051 | break; | |
4052 | } | |
c8b0e6e1 | 4053 | #endif /*CONFIG_IWL4965_HT */ |
b481de9c ZY |
4054 | /* assoc_id is 0 no association */ |
4055 | if (!priv->assoc_id) | |
4056 | break; | |
4057 | if (priv->beacon_int) | |
4058 | queue_work(priv->workqueue, | |
4059 | &priv->post_associate.work); | |
4060 | else | |
4061 | priv->call_post_assoc_from_beacon = 1; | |
4062 | } | |
4063 | ||
4064 | break; | |
4065 | ||
4066 | case IEEE80211_STYPE_PROBE_REQ: | |
4067 | if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && | |
bb8c093b | 4068 | !iwl4965_is_associated(priv)) { |
0795af57 JP |
4069 | DECLARE_MAC_BUF(mac1); |
4070 | DECLARE_MAC_BUF(mac2); | |
4071 | DECLARE_MAC_BUF(mac3); | |
4072 | ||
b481de9c | 4073 | IWL_DEBUG_DROP("Dropping (non network): " |
0795af57 JP |
4074 | "%s, %s, %s\n", |
4075 | print_mac(mac1, header->addr1), | |
4076 | print_mac(mac2, header->addr2), | |
4077 | print_mac(mac3, header->addr3)); | |
b481de9c ZY |
4078 | return; |
4079 | } | |
4080 | } | |
17744ff6 | 4081 | iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &rx_status); |
b481de9c ZY |
4082 | break; |
4083 | ||
4084 | case IEEE80211_FTYPE_CTL: | |
9ab46173 | 4085 | #ifdef CONFIG_IWL4965_HT |
b481de9c ZY |
4086 | switch (fc & IEEE80211_FCTL_STYPE) { |
4087 | case IEEE80211_STYPE_BACK_REQ: | |
4088 | IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n"); | |
4089 | iwl4965_handle_data_packet(priv, 0, include_phy, | |
17744ff6 | 4090 | rxb, &rx_status); |
b481de9c ZY |
4091 | break; |
4092 | default: | |
4093 | break; | |
4094 | } | |
4095 | #endif | |
b481de9c ZY |
4096 | break; |
4097 | ||
0795af57 JP |
4098 | case IEEE80211_FTYPE_DATA: { |
4099 | DECLARE_MAC_BUF(mac1); | |
4100 | DECLARE_MAC_BUF(mac2); | |
4101 | DECLARE_MAC_BUF(mac3); | |
4102 | ||
b481de9c ZY |
4103 | if (priv->iw_mode == IEEE80211_IF_TYPE_AP) |
4104 | iwl4965_update_ps_mode(priv, fc & IEEE80211_FCTL_PM, | |
4105 | header->addr2); | |
4106 | ||
4107 | if (unlikely(!network_packet)) | |
4108 | IWL_DEBUG_DROP("Dropping (non network): " | |
0795af57 JP |
4109 | "%s, %s, %s\n", |
4110 | print_mac(mac1, header->addr1), | |
4111 | print_mac(mac2, header->addr2), | |
4112 | print_mac(mac3, header->addr3)); | |
bb8c093b | 4113 | else if (unlikely(iwl4965_is_duplicate_packet(priv, header))) |
0795af57 JP |
4114 | IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n", |
4115 | print_mac(mac1, header->addr1), | |
4116 | print_mac(mac2, header->addr2), | |
4117 | print_mac(mac3, header->addr3)); | |
b481de9c ZY |
4118 | else |
4119 | iwl4965_handle_data_packet(priv, 1, include_phy, rxb, | |
17744ff6 | 4120 | &rx_status); |
b481de9c | 4121 | break; |
0795af57 | 4122 | } |
b481de9c ZY |
4123 | default: |
4124 | break; | |
4125 | ||
4126 | } | |
4127 | } | |
4128 | ||
4129 | /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD). | |
4130 | * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */ | |
c79dd5b5 | 4131 | static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv, |
bb8c093b | 4132 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 4133 | { |
bb8c093b | 4134 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
b481de9c ZY |
4135 | priv->last_phy_res[0] = 1; |
4136 | memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]), | |
4137 | sizeof(struct iwl4965_rx_phy_res)); | |
4138 | } | |
4139 | ||
c79dd5b5 | 4140 | static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv, |
bb8c093b | 4141 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c ZY |
4142 | |
4143 | { | |
c8b0e6e1 | 4144 | #ifdef CONFIG_IWL4965_SENSITIVITY |
bb8c093b CH |
4145 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
4146 | struct iwl4965_missed_beacon_notif *missed_beacon; | |
b481de9c ZY |
4147 | |
4148 | missed_beacon = &pkt->u.missed_beacon; | |
4149 | if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) { | |
4150 | IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n", | |
4151 | le32_to_cpu(missed_beacon->consequtive_missed_beacons), | |
4152 | le32_to_cpu(missed_beacon->total_missed_becons), | |
4153 | le32_to_cpu(missed_beacon->num_recvd_beacons), | |
4154 | le32_to_cpu(missed_beacon->num_expected_beacons)); | |
4155 | priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT; | |
4156 | if (unlikely(!test_bit(STATUS_SCANNING, &priv->status))) | |
4157 | queue_work(priv->workqueue, &priv->sensitivity_work); | |
4158 | } | |
c8b0e6e1 | 4159 | #endif /*CONFIG_IWL4965_SENSITIVITY*/ |
b481de9c ZY |
4160 | } |
4161 | ||
c8b0e6e1 | 4162 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 4163 | |
8b6eaea8 CB |
4164 | /** |
4165 | * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table | |
4166 | */ | |
c79dd5b5 | 4167 | static void iwl4965_sta_modify_enable_tid_tx(struct iwl_priv *priv, |
b481de9c ZY |
4168 | int sta_id, int tid) |
4169 | { | |
4170 | unsigned long flags; | |
4171 | ||
8b6eaea8 | 4172 | /* Remove "disable" flag, to enable Tx for this TID */ |
b481de9c ZY |
4173 | spin_lock_irqsave(&priv->sta_lock, flags); |
4174 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; | |
4175 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
4176 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
4177 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
4178 | ||
bb8c093b | 4179 | iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
b481de9c ZY |
4180 | } |
4181 | ||
8b6eaea8 CB |
4182 | /** |
4183 | * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack | |
4184 | * | |
4185 | * Go through block-ack's bitmap of ACK'd frames, update driver's record of | |
4186 | * ACK vs. not. This gets sent to mac80211, then to rate scaling algo. | |
4187 | */ | |
c79dd5b5 | 4188 | static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv, |
bb8c093b CH |
4189 | struct iwl4965_ht_agg *agg, |
4190 | struct iwl4965_compressed_ba_resp* | |
b481de9c ZY |
4191 | ba_resp) |
4192 | ||
4193 | { | |
4194 | int i, sh, ack; | |
fe01b477 RR |
4195 | u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl); |
4196 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
4197 | u64 bitmap; | |
4198 | int successes = 0; | |
4199 | struct ieee80211_tx_status *tx_status; | |
b481de9c ZY |
4200 | |
4201 | if (unlikely(!agg->wait_for_ba)) { | |
4202 | IWL_ERROR("Received BA when not expected\n"); | |
4203 | return -EINVAL; | |
4204 | } | |
8b6eaea8 CB |
4205 | |
4206 | /* Mark that the expected block-ack response arrived */ | |
b481de9c | 4207 | agg->wait_for_ba = 0; |
fe01b477 | 4208 | IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl); |
8b6eaea8 CB |
4209 | |
4210 | /* Calculate shift to align block-ack bits with our Tx window bits */ | |
fe01b477 | 4211 | sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4); |
01ebd063 | 4212 | if (sh < 0) /* tbw something is wrong with indices */ |
b481de9c ZY |
4213 | sh += 0x100; |
4214 | ||
8b6eaea8 | 4215 | /* don't use 64-bit values for now */ |
fe01b477 | 4216 | bitmap = le64_to_cpu(ba_resp->bitmap) >> sh; |
b481de9c ZY |
4217 | |
4218 | if (agg->frame_count > (64 - sh)) { | |
4219 | IWL_DEBUG_TX_REPLY("more frames than bitmap size"); | |
4220 | return -1; | |
4221 | } | |
4222 | ||
4223 | /* check for success or failure according to the | |
8b6eaea8 | 4224 | * transmitted bitmap and block-ack bitmap */ |
fe01b477 | 4225 | bitmap &= agg->bitmap; |
b481de9c | 4226 | |
8b6eaea8 CB |
4227 | /* For each frame attempted in aggregation, |
4228 | * update driver's record of tx frame's status. */ | |
b481de9c | 4229 | for (i = 0; i < agg->frame_count ; i++) { |
fe01b477 RR |
4230 | ack = bitmap & (1 << i); |
4231 | successes += !!ack; | |
b481de9c | 4232 | IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n", |
fe01b477 RR |
4233 | ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff, |
4234 | agg->start_idx + i); | |
4235 | } | |
4236 | ||
4237 | tx_status = &priv->txq[scd_flow].txb[agg->start_idx].status; | |
4238 | tx_status->flags = IEEE80211_TX_STATUS_ACK; | |
99556438 RR |
4239 | tx_status->flags |= IEEE80211_TX_STATUS_AMPDU; |
4240 | tx_status->ampdu_ack_map = successes; | |
4241 | tx_status->ampdu_ack_len = agg->frame_count; | |
4c424e4c RR |
4242 | iwl4965_hwrate_to_tx_control(priv, agg->rate_n_flags, |
4243 | &tx_status->control); | |
fe01b477 | 4244 | |
f868f4e1 | 4245 | IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap); |
fe01b477 RR |
4246 | |
4247 | return 0; | |
4248 | } | |
4249 | ||
4250 | /** | |
4251 | * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration | |
4252 | */ | |
c79dd5b5 | 4253 | static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, |
fe01b477 RR |
4254 | u16 txq_id) |
4255 | { | |
4256 | /* Simply stop the queue, but don't change any configuration; | |
4257 | * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ | |
3395f6e9 | 4258 | iwl_write_prph(priv, |
fe01b477 RR |
4259 | KDR_SCD_QUEUE_STATUS_BITS(txq_id), |
4260 | (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)| | |
4261 | (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); | |
4262 | } | |
b481de9c | 4263 | |
fe01b477 RR |
4264 | /** |
4265 | * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID | |
b095d03a | 4266 | * priv->lock must be held by the caller |
fe01b477 | 4267 | */ |
c79dd5b5 | 4268 | static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id, |
fe01b477 RR |
4269 | u16 ssn_idx, u8 tx_fifo) |
4270 | { | |
b095d03a RR |
4271 | int ret = 0; |
4272 | ||
fe01b477 RR |
4273 | if (IWL_BACK_QUEUE_FIRST_ID > txq_id) { |
4274 | IWL_WARNING("queue number too small: %d, must be > %d\n", | |
4275 | txq_id, IWL_BACK_QUEUE_FIRST_ID); | |
4276 | return -EINVAL; | |
b481de9c ZY |
4277 | } |
4278 | ||
3395f6e9 | 4279 | ret = iwl_grab_nic_access(priv); |
b095d03a RR |
4280 | if (ret) |
4281 | return ret; | |
4282 | ||
fe01b477 RR |
4283 | iwl4965_tx_queue_stop_scheduler(priv, txq_id); |
4284 | ||
3395f6e9 | 4285 | iwl_clear_bits_prph(priv, KDR_SCD_QUEUECHAIN_SEL, (1 << txq_id)); |
fe01b477 RR |
4286 | |
4287 | priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); | |
4288 | priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); | |
4289 | /* supposes that ssn_idx is valid (!= 0xFFF) */ | |
4290 | iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); | |
4291 | ||
3395f6e9 | 4292 | iwl_clear_bits_prph(priv, KDR_SCD_INTERRUPT_MASK, (1 << txq_id)); |
fe01b477 RR |
4293 | iwl4965_txq_ctx_deactivate(priv, txq_id); |
4294 | iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); | |
4295 | ||
3395f6e9 | 4296 | iwl_release_nic_access(priv); |
b095d03a | 4297 | |
fe01b477 RR |
4298 | return 0; |
4299 | } | |
b481de9c | 4300 | |
c79dd5b5 | 4301 | int iwl4965_check_empty_hw_queue(struct iwl_priv *priv, int sta_id, |
fe01b477 RR |
4302 | u8 tid, int txq_id) |
4303 | { | |
4304 | struct iwl4965_queue *q = &priv->txq[txq_id].q; | |
4305 | u8 *addr = priv->stations[sta_id].sta.sta.addr; | |
4306 | struct iwl4965_tid_data *tid_data = &priv->stations[sta_id].tid[tid]; | |
4307 | ||
4308 | switch (priv->stations[sta_id].tid[tid].agg.state) { | |
4309 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
4310 | /* We are reclaiming the last packet of the */ | |
4311 | /* aggregated HW queue */ | |
4312 | if (txq_id == tid_data->agg.txq_id && | |
4313 | q->read_ptr == q->write_ptr) { | |
4314 | u16 ssn = SEQ_TO_SN(tid_data->seq_number); | |
4315 | int tx_fifo = default_tid_to_tx_fifo[tid]; | |
4316 | IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n"); | |
4317 | iwl4965_tx_queue_agg_disable(priv, txq_id, | |
4318 | ssn, tx_fifo); | |
4319 | tid_data->agg.state = IWL_AGG_OFF; | |
4320 | ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, addr, tid); | |
4321 | } | |
4322 | break; | |
4323 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
4324 | /* We are reclaiming the last packet of the queue */ | |
4325 | if (tid_data->tfds_in_queue == 0) { | |
4326 | IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n"); | |
4327 | tid_data->agg.state = IWL_AGG_ON; | |
4328 | ieee80211_start_tx_ba_cb_irqsafe(priv->hw, addr, tid); | |
4329 | } | |
4330 | break; | |
4331 | } | |
b481de9c ZY |
4332 | return 0; |
4333 | } | |
4334 | ||
8b6eaea8 CB |
4335 | /** |
4336 | * iwl4965_queue_dec_wrap - Decrement queue index, wrap back to end if needed | |
4337 | * @index -- current index | |
4338 | * @n_bd -- total number of entries in queue (s/b power of 2) | |
4339 | */ | |
bb8c093b | 4340 | static inline int iwl4965_queue_dec_wrap(int index, int n_bd) |
b481de9c ZY |
4341 | { |
4342 | return (index == 0) ? n_bd - 1 : index - 1; | |
4343 | } | |
4344 | ||
8b6eaea8 CB |
4345 | /** |
4346 | * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
4347 | * | |
4348 | * Handles block-acknowledge notification from device, which reports success | |
4349 | * of frames sent via aggregation. | |
4350 | */ | |
c79dd5b5 | 4351 | static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv, |
bb8c093b | 4352 | struct iwl4965_rx_mem_buffer *rxb) |
b481de9c | 4353 | { |
bb8c093b CH |
4354 | struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
4355 | struct iwl4965_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; | |
b481de9c | 4356 | int index; |
bb8c093b CH |
4357 | struct iwl4965_tx_queue *txq = NULL; |
4358 | struct iwl4965_ht_agg *agg; | |
fe01b477 | 4359 | DECLARE_MAC_BUF(mac); |
8b6eaea8 CB |
4360 | |
4361 | /* "flow" corresponds to Tx queue */ | |
fe01b477 | 4362 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); |
8b6eaea8 CB |
4363 | |
4364 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
4365 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
b481de9c ZY |
4366 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); |
4367 | ||
fe01b477 | 4368 | if (scd_flow >= ARRAY_SIZE(priv->txq)) { |
b481de9c ZY |
4369 | IWL_ERROR("BUG_ON scd_flow is bigger than number of queues"); |
4370 | return; | |
4371 | } | |
4372 | ||
fe01b477 | 4373 | txq = &priv->txq[scd_flow]; |
b481de9c | 4374 | agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg; |
8b6eaea8 CB |
4375 | |
4376 | /* Find index just before block-ack window */ | |
bb8c093b | 4377 | index = iwl4965_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd); |
b481de9c | 4378 | |
01ebd063 | 4379 | /* TODO: Need to get this copy more safely - now good for debug */ |
fe01b477 | 4380 | |
0795af57 JP |
4381 | IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, " |
4382 | "sta_id = %d\n", | |
b481de9c | 4383 | agg->wait_for_ba, |
0795af57 | 4384 | print_mac(mac, (u8*) &ba_resp->sta_addr_lo32), |
b481de9c | 4385 | ba_resp->sta_id); |
fe01b477 | 4386 | IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = " |
b481de9c ZY |
4387 | "%d, scd_ssn = %d\n", |
4388 | ba_resp->tid, | |
fe01b477 | 4389 | ba_resp->seq_ctl, |
0310ae72 | 4390 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
b481de9c ZY |
4391 | ba_resp->scd_flow, |
4392 | ba_resp->scd_ssn); | |
fe01b477 | 4393 | IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n", |
b481de9c | 4394 | agg->start_idx, |
f868f4e1 | 4395 | (unsigned long long)agg->bitmap); |
8b6eaea8 CB |
4396 | |
4397 | /* Update driver's record of ACK vs. not for each frame in window */ | |
b481de9c | 4398 | iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp); |
8b6eaea8 CB |
4399 | |
4400 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
4401 | * block-ack window (we assume that they've been successfully | |
4402 | * transmitted ... if not, it's too late anyway). */ | |
fe01b477 RR |
4403 | if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) { |
4404 | int freed = iwl4965_tx_queue_reclaim(priv, scd_flow, index); | |
4405 | priv->stations[ba_resp->sta_id]. | |
4406 | tid[ba_resp->tid].tfds_in_queue -= freed; | |
4407 | if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && | |
4408 | priv->mac80211_registered && | |
4409 | agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) | |
4410 | ieee80211_wake_queue(priv->hw, scd_flow); | |
4411 | iwl4965_check_empty_hw_queue(priv, ba_resp->sta_id, | |
4412 | ba_resp->tid, scd_flow); | |
4413 | } | |
b481de9c ZY |
4414 | } |
4415 | ||
8b6eaea8 CB |
4416 | /** |
4417 | * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue | |
4418 | */ | |
c79dd5b5 | 4419 | static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid, |
b481de9c ZY |
4420 | u16 txq_id) |
4421 | { | |
4422 | u32 tbl_dw_addr; | |
4423 | u32 tbl_dw; | |
4424 | u16 scd_q2ratid; | |
4425 | ||
4426 | scd_q2ratid = ra_tid & SCD_QUEUE_RA_TID_MAP_RATID_MSK; | |
4427 | ||
4428 | tbl_dw_addr = priv->scd_base_addr + | |
4429 | SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); | |
4430 | ||
3395f6e9 | 4431 | tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr); |
b481de9c ZY |
4432 | |
4433 | if (txq_id & 0x1) | |
4434 | tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF); | |
4435 | else | |
4436 | tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000); | |
4437 | ||
3395f6e9 | 4438 | iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw); |
b481de9c ZY |
4439 | |
4440 | return 0; | |
4441 | } | |
4442 | ||
fe01b477 | 4443 | |
b481de9c | 4444 | /** |
8b6eaea8 CB |
4445 | * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue |
4446 | * | |
4447 | * NOTE: txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID, | |
4448 | * i.e. it must be one of the higher queues used for aggregation | |
b481de9c | 4449 | */ |
c79dd5b5 | 4450 | static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id, |
b481de9c ZY |
4451 | int tx_fifo, int sta_id, int tid, |
4452 | u16 ssn_idx) | |
4453 | { | |
4454 | unsigned long flags; | |
4455 | int rc; | |
4456 | u16 ra_tid; | |
4457 | ||
4458 | if (IWL_BACK_QUEUE_FIRST_ID > txq_id) | |
4459 | IWL_WARNING("queue number too small: %d, must be > %d\n", | |
4460 | txq_id, IWL_BACK_QUEUE_FIRST_ID); | |
4461 | ||
4462 | ra_tid = BUILD_RAxTID(sta_id, tid); | |
4463 | ||
8b6eaea8 | 4464 | /* Modify device's station table to Tx this TID */ |
bb8c093b | 4465 | iwl4965_sta_modify_enable_tid_tx(priv, sta_id, tid); |
b481de9c ZY |
4466 | |
4467 | spin_lock_irqsave(&priv->lock, flags); | |
3395f6e9 | 4468 | rc = iwl_grab_nic_access(priv); |
b481de9c ZY |
4469 | if (rc) { |
4470 | spin_unlock_irqrestore(&priv->lock, flags); | |
4471 | return rc; | |
4472 | } | |
4473 | ||
8b6eaea8 | 4474 | /* Stop this Tx queue before configuring it */ |
b481de9c ZY |
4475 | iwl4965_tx_queue_stop_scheduler(priv, txq_id); |
4476 | ||
8b6eaea8 | 4477 | /* Map receiver-address / traffic-ID to this queue */ |
b481de9c ZY |
4478 | iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id); |
4479 | ||
8b6eaea8 | 4480 | /* Set this queue as a chain-building queue */ |
3395f6e9 | 4481 | iwl_set_bits_prph(priv, KDR_SCD_QUEUECHAIN_SEL, (1 << txq_id)); |
b481de9c | 4482 | |
8b6eaea8 CB |
4483 | /* Place first TFD at index corresponding to start sequence number. |
4484 | * Assumes that ssn_idx is valid (!= 0xFFF) */ | |
fc4b6853 TW |
4485 | priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); |
4486 | priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); | |
b481de9c ZY |
4487 | iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); |
4488 | ||
8b6eaea8 | 4489 | /* Set up Tx window size and frame limit for this queue */ |
3395f6e9 | 4490 | iwl_write_targ_mem(priv, |
b481de9c ZY |
4491 | priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(txq_id), |
4492 | (SCD_WIN_SIZE << SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & | |
4493 | SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); | |
4494 | ||
3395f6e9 | 4495 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
b481de9c ZY |
4496 | SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), |
4497 | (SCD_FRAME_LIMIT << SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) | |
4498 | & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); | |
4499 | ||
3395f6e9 | 4500 | iwl_set_bits_prph(priv, KDR_SCD_INTERRUPT_MASK, (1 << txq_id)); |
b481de9c | 4501 | |
8b6eaea8 | 4502 | /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ |
b481de9c ZY |
4503 | iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1); |
4504 | ||
3395f6e9 | 4505 | iwl_release_nic_access(priv); |
b481de9c ZY |
4506 | spin_unlock_irqrestore(&priv->lock, flags); |
4507 | ||
4508 | return 0; | |
4509 | } | |
4510 | ||
c8b0e6e1 | 4511 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c ZY |
4512 | |
4513 | /** | |
4514 | * iwl4965_add_station - Initialize a station's hardware rate table | |
4515 | * | |
8b6eaea8 | 4516 | * The uCode's station table contains a table of fallback rates |
b481de9c ZY |
4517 | * for automatic fallback during transmission. |
4518 | * | |
8b6eaea8 CB |
4519 | * NOTE: This sets up a default set of values. These will be replaced later |
4520 | * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of | |
4521 | * rc80211_simple. | |
b481de9c | 4522 | * |
8b6eaea8 CB |
4523 | * NOTE: Run REPLY_ADD_STA command to set up station table entry, before |
4524 | * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD, | |
4525 | * which requires station table entry to exist). | |
b481de9c | 4526 | */ |
c79dd5b5 | 4527 | void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
b481de9c ZY |
4528 | { |
4529 | int i, r; | |
bb8c093b | 4530 | struct iwl4965_link_quality_cmd link_cmd = { |
b481de9c ZY |
4531 | .reserved1 = 0, |
4532 | }; | |
4533 | u16 rate_flags; | |
4534 | ||
8b6eaea8 CB |
4535 | /* Set up the rate scaling to start at selected rate, fall back |
4536 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
b481de9c ZY |
4537 | if (is_ap) |
4538 | r = IWL_RATE_54M_INDEX; | |
8318d78a | 4539 | else if (priv->band == IEEE80211_BAND_5GHZ) |
b481de9c ZY |
4540 | r = IWL_RATE_6M_INDEX; |
4541 | else | |
4542 | r = IWL_RATE_1M_INDEX; | |
4543 | ||
4544 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
4545 | rate_flags = 0; | |
4546 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
4547 | rate_flags |= RATE_MCS_CCK_MSK; | |
4548 | ||
8b6eaea8 | 4549 | /* Use Tx antenna B only */ |
b481de9c ZY |
4550 | rate_flags |= RATE_MCS_ANT_B_MSK; |
4551 | rate_flags &= ~RATE_MCS_ANT_A_MSK; | |
8b6eaea8 | 4552 | |
b481de9c | 4553 | link_cmd.rs_table[i].rate_n_flags = |
bb8c093b CH |
4554 | iwl4965_hw_set_rate_n_flags(iwl4965_rates[r].plcp, rate_flags); |
4555 | r = iwl4965_get_prev_ieee_rate(r); | |
b481de9c ZY |
4556 | } |
4557 | ||
4558 | link_cmd.general_params.single_stream_ant_msk = 2; | |
4559 | link_cmd.general_params.dual_stream_ant_msk = 3; | |
4560 | link_cmd.agg_params.agg_dis_start_th = 3; | |
4561 | link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000); | |
4562 | ||
4563 | /* Update the rate scaling for control frame Tx to AP */ | |
a4062b8f | 4564 | link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_setting.bcast_sta_id; |
b481de9c | 4565 | |
e5472978 TW |
4566 | iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD, |
4567 | sizeof(link_cmd), &link_cmd, NULL); | |
b481de9c ZY |
4568 | } |
4569 | ||
c8b0e6e1 | 4570 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 4571 | |
c79dd5b5 | 4572 | static u8 iwl4965_is_channel_extension(struct iwl_priv *priv, |
8318d78a | 4573 | enum ieee80211_band band, |
78330fdd | 4574 | u16 channel, u8 extension_chan_offset) |
b481de9c | 4575 | { |
bf85ea4f | 4576 | const struct iwl_channel_info *ch_info; |
b481de9c | 4577 | |
8622e705 | 4578 | ch_info = iwl_get_channel_info(priv, band, channel); |
b481de9c ZY |
4579 | if (!is_channel_valid(ch_info)) |
4580 | return 0; | |
4581 | ||
134eb5d3 | 4582 | if (extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_NONE) |
b481de9c ZY |
4583 | return 0; |
4584 | ||
4585 | if ((ch_info->fat_extension_channel == extension_chan_offset) || | |
4586 | (ch_info->fat_extension_channel == HT_IE_EXT_CHANNEL_MAX)) | |
4587 | return 1; | |
4588 | ||
4589 | return 0; | |
4590 | } | |
4591 | ||
c79dd5b5 | 4592 | static u8 iwl4965_is_fat_tx_allowed(struct iwl_priv *priv, |
fd105e79 | 4593 | struct ieee80211_ht_info *sta_ht_inf) |
b481de9c | 4594 | { |
fd105e79 | 4595 | struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config; |
b481de9c | 4596 | |
fd105e79 RR |
4597 | if ((!iwl_ht_conf->is_ht) || |
4598 | (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) || | |
134eb5d3 | 4599 | (iwl_ht_conf->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_NONE)) |
b481de9c ZY |
4600 | return 0; |
4601 | ||
fd105e79 RR |
4602 | if (sta_ht_inf) { |
4603 | if ((!sta_ht_inf->ht_supported) || | |
194c7ca6 | 4604 | (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH))) |
fd105e79 RR |
4605 | return 0; |
4606 | } | |
b481de9c | 4607 | |
78330fdd | 4608 | return (iwl4965_is_channel_extension(priv, priv->band, |
fd105e79 RR |
4609 | iwl_ht_conf->control_channel, |
4610 | iwl_ht_conf->extension_chan_offset)); | |
b481de9c ZY |
4611 | } |
4612 | ||
c79dd5b5 | 4613 | void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) |
b481de9c | 4614 | { |
bb8c093b | 4615 | struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon; |
b481de9c ZY |
4616 | u32 val; |
4617 | ||
4618 | if (!ht_info->is_ht) | |
4619 | return; | |
4620 | ||
8b6eaea8 | 4621 | /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */ |
fd105e79 | 4622 | if (iwl4965_is_fat_tx_allowed(priv, NULL)) |
b481de9c ZY |
4623 | rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK; |
4624 | else | |
4625 | rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK | | |
4626 | RXON_FLG_CHANNEL_MODE_PURE_40_MSK); | |
4627 | ||
4628 | if (le16_to_cpu(rxon->channel) != ht_info->control_channel) { | |
4629 | IWL_DEBUG_ASSOC("control diff than current %d %d\n", | |
4630 | le16_to_cpu(rxon->channel), | |
4631 | ht_info->control_channel); | |
4632 | rxon->channel = cpu_to_le16(ht_info->control_channel); | |
4633 | return; | |
4634 | } | |
4635 | ||
8b6eaea8 | 4636 | /* Note: control channel is opposite of extension channel */ |
b481de9c ZY |
4637 | switch (ht_info->extension_chan_offset) { |
4638 | case IWL_EXT_CHANNEL_OFFSET_ABOVE: | |
4639 | rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); | |
4640 | break; | |
4641 | case IWL_EXT_CHANNEL_OFFSET_BELOW: | |
4642 | rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; | |
4643 | break; | |
134eb5d3 | 4644 | case IWL_EXT_CHANNEL_OFFSET_NONE: |
b481de9c ZY |
4645 | default: |
4646 | rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK; | |
4647 | break; | |
4648 | } | |
4649 | ||
fd105e79 | 4650 | val = ht_info->ht_protection; |
b481de9c ZY |
4651 | |
4652 | rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS); | |
4653 | ||
b481de9c ZY |
4654 | iwl4965_set_rxon_chain(priv); |
4655 | ||
4656 | IWL_DEBUG_ASSOC("supported HT rate 0x%X %X " | |
4657 | "rxon flags 0x%X operation mode :0x%X " | |
4658 | "extension channel offset 0x%x " | |
4659 | "control chan %d\n", | |
fd105e79 RR |
4660 | ht_info->supp_mcs_set[0], ht_info->supp_mcs_set[1], |
4661 | le32_to_cpu(rxon->flags), ht_info->ht_protection, | |
b481de9c ZY |
4662 | ht_info->extension_chan_offset, |
4663 | ht_info->control_channel); | |
4664 | return; | |
4665 | } | |
4666 | ||
c79dd5b5 | 4667 | void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index, |
67d62035 | 4668 | struct ieee80211_ht_info *sta_ht_inf) |
b481de9c ZY |
4669 | { |
4670 | __le32 sta_flags; | |
e53cfe0e | 4671 | u8 mimo_ps_mode; |
b481de9c | 4672 | |
67d62035 | 4673 | if (!sta_ht_inf || !sta_ht_inf->ht_supported) |
b481de9c ZY |
4674 | goto done; |
4675 | ||
e53cfe0e TW |
4676 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2; |
4677 | ||
b481de9c ZY |
4678 | sta_flags = priv->stations[index].sta.station_flags; |
4679 | ||
e53cfe0e TW |
4680 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); |
4681 | ||
4682 | switch (mimo_ps_mode) { | |
4683 | case WLAN_HT_CAP_MIMO_PS_STATIC: | |
4684 | sta_flags |= STA_FLG_MIMO_DIS_MSK; | |
4685 | break; | |
4686 | case WLAN_HT_CAP_MIMO_PS_DYNAMIC: | |
b481de9c | 4687 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
e53cfe0e TW |
4688 | break; |
4689 | case WLAN_HT_CAP_MIMO_PS_DISABLED: | |
4690 | break; | |
4691 | default: | |
4692 | IWL_WARNING("Invalid MIMO PS mode %d", mimo_ps_mode); | |
4693 | break; | |
4694 | } | |
b481de9c ZY |
4695 | |
4696 | sta_flags |= cpu_to_le32( | |
67d62035 | 4697 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
b481de9c ZY |
4698 | |
4699 | sta_flags |= cpu_to_le32( | |
67d62035 | 4700 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
b481de9c | 4701 | |
67d62035 | 4702 | if (iwl4965_is_fat_tx_allowed(priv, sta_ht_inf)) |
b481de9c | 4703 | sta_flags |= STA_FLG_FAT_EN_MSK; |
67d62035 | 4704 | else |
e53cfe0e | 4705 | sta_flags &= ~STA_FLG_FAT_EN_MSK; |
67d62035 | 4706 | |
b481de9c ZY |
4707 | priv->stations[index].sta.station_flags = sta_flags; |
4708 | done: | |
4709 | return; | |
4710 | } | |
4711 | ||
c79dd5b5 | 4712 | static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv *priv, |
b481de9c ZY |
4713 | int sta_id, int tid, u16 ssn) |
4714 | { | |
4715 | unsigned long flags; | |
4716 | ||
4717 | spin_lock_irqsave(&priv->sta_lock, flags); | |
4718 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
4719 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
4720 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
4721 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
4722 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
4723 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
4724 | ||
bb8c093b | 4725 | iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
b481de9c ZY |
4726 | } |
4727 | ||
c79dd5b5 | 4728 | static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv *priv, |
b481de9c ZY |
4729 | int sta_id, int tid) |
4730 | { | |
4731 | unsigned long flags; | |
4732 | ||
4733 | spin_lock_irqsave(&priv->sta_lock, flags); | |
4734 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
4735 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
4736 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
4737 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
4738 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
4739 | ||
bb8c093b | 4740 | iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
b481de9c ZY |
4741 | } |
4742 | ||
8b6eaea8 CB |
4743 | /* |
4744 | * Find first available (lowest unused) Tx Queue, mark it "active". | |
4745 | * Called only when finding queue for aggregation. | |
4746 | * Should never return anything < 7, because they should already | |
4747 | * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6). | |
4748 | */ | |
c79dd5b5 | 4749 | static int iwl4965_txq_ctx_activate_free(struct iwl_priv *priv) |
b481de9c ZY |
4750 | { |
4751 | int txq_id; | |
4752 | ||
4753 | for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) | |
4754 | if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk)) | |
4755 | return txq_id; | |
4756 | return -1; | |
4757 | } | |
4758 | ||
fe01b477 RR |
4759 | static int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw *hw, const u8 *da, |
4760 | u16 tid, u16 *start_seq_num) | |
b481de9c | 4761 | { |
c79dd5b5 | 4762 | struct iwl_priv *priv = hw->priv; |
b481de9c ZY |
4763 | int sta_id; |
4764 | int tx_fifo; | |
4765 | int txq_id; | |
4766 | int ssn = -1; | |
b095d03a | 4767 | int ret = 0; |
b481de9c | 4768 | unsigned long flags; |
bb8c093b | 4769 | struct iwl4965_tid_data *tid_data; |
0795af57 | 4770 | DECLARE_MAC_BUF(mac); |
b481de9c ZY |
4771 | |
4772 | if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo))) | |
4773 | tx_fifo = default_tid_to_tx_fifo[tid]; | |
4774 | else | |
4775 | return -EINVAL; | |
4776 | ||
fe01b477 RR |
4777 | IWL_WARNING("%s on da = %s tid = %d\n", |
4778 | __func__, print_mac(mac, da), tid); | |
b481de9c | 4779 | |
bb8c093b | 4780 | sta_id = iwl4965_hw_find_station(priv, da); |
b481de9c ZY |
4781 | if (sta_id == IWL_INVALID_STATION) |
4782 | return -ENXIO; | |
4783 | ||
fe01b477 RR |
4784 | if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) { |
4785 | IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n"); | |
4786 | return -ENXIO; | |
4787 | } | |
4788 | ||
bb8c093b | 4789 | txq_id = iwl4965_txq_ctx_activate_free(priv); |
b481de9c ZY |
4790 | if (txq_id == -1) |
4791 | return -ENXIO; | |
4792 | ||
4793 | spin_lock_irqsave(&priv->sta_lock, flags); | |
4794 | tid_data = &priv->stations[sta_id].tid[tid]; | |
4795 | ssn = SEQ_TO_SN(tid_data->seq_number); | |
4796 | tid_data->agg.txq_id = txq_id; | |
4797 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
4798 | ||
4799 | *start_seq_num = ssn; | |
b095d03a RR |
4800 | ret = iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo, |
4801 | sta_id, tid, ssn); | |
4802 | if (ret) | |
4803 | return ret; | |
b481de9c | 4804 | |
b095d03a | 4805 | ret = 0; |
fe01b477 RR |
4806 | if (tid_data->tfds_in_queue == 0) { |
4807 | printk(KERN_ERR "HW queue is empty\n"); | |
4808 | tid_data->agg.state = IWL_AGG_ON; | |
4809 | ieee80211_start_tx_ba_cb_irqsafe(hw, da, tid); | |
4810 | } else { | |
4811 | IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n", | |
4812 | tid_data->tfds_in_queue); | |
4813 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
4814 | } | |
b095d03a | 4815 | return ret; |
fe01b477 | 4816 | } |
b481de9c | 4817 | |
fe01b477 RR |
4818 | static int iwl4965_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, const u8 *da, |
4819 | u16 tid) | |
b481de9c ZY |
4820 | { |
4821 | ||
c79dd5b5 | 4822 | struct iwl_priv *priv = hw->priv; |
b481de9c | 4823 | int tx_fifo_id, txq_id, sta_id, ssn = -1; |
bb8c093b | 4824 | struct iwl4965_tid_data *tid_data; |
b095d03a | 4825 | int ret, write_ptr, read_ptr; |
fe01b477 | 4826 | unsigned long flags; |
0795af57 JP |
4827 | DECLARE_MAC_BUF(mac); |
4828 | ||
b481de9c | 4829 | if (!da) { |
fe01b477 | 4830 | IWL_ERROR("da = NULL\n"); |
b481de9c ZY |
4831 | return -EINVAL; |
4832 | } | |
4833 | ||
4834 | if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo))) | |
4835 | tx_fifo_id = default_tid_to_tx_fifo[tid]; | |
4836 | else | |
4837 | return -EINVAL; | |
4838 | ||
bb8c093b | 4839 | sta_id = iwl4965_hw_find_station(priv, da); |
b481de9c ZY |
4840 | |
4841 | if (sta_id == IWL_INVALID_STATION) | |
4842 | return -ENXIO; | |
4843 | ||
fe01b477 RR |
4844 | if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON) |
4845 | IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n"); | |
4846 | ||
b481de9c ZY |
4847 | tid_data = &priv->stations[sta_id].tid[tid]; |
4848 | ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4; | |
4849 | txq_id = tid_data->agg.txq_id; | |
fe01b477 RR |
4850 | write_ptr = priv->txq[txq_id].q.write_ptr; |
4851 | read_ptr = priv->txq[txq_id].q.read_ptr; | |
4852 | ||
4853 | /* The queue is not empty */ | |
4854 | if (write_ptr != read_ptr) { | |
4855 | IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n"); | |
4856 | priv->stations[sta_id].tid[tid].agg.state = | |
4857 | IWL_EMPTYING_HW_QUEUE_DELBA; | |
4858 | return 0; | |
4859 | } | |
4860 | ||
4861 | IWL_DEBUG_HT("HW queue empty\n");; | |
4862 | priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF; | |
b481de9c | 4863 | |
fe01b477 | 4864 | spin_lock_irqsave(&priv->lock, flags); |
b095d03a | 4865 | ret = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id); |
fe01b477 RR |
4866 | spin_unlock_irqrestore(&priv->lock, flags); |
4867 | ||
b095d03a RR |
4868 | if (ret) |
4869 | return ret; | |
b481de9c | 4870 | |
fe01b477 | 4871 | ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, da, tid); |
b481de9c | 4872 | |
fe01b477 RR |
4873 | IWL_DEBUG_INFO("iwl4965_mac_ht_tx_agg_stop on da=%s tid=%d\n", |
4874 | print_mac(mac, da), tid); | |
8114fcf1 | 4875 | |
8114fcf1 RR |
4876 | return 0; |
4877 | } | |
4878 | ||
4879 | int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw, | |
4880 | enum ieee80211_ampdu_mlme_action action, | |
4881 | const u8 *addr, u16 tid, u16 *ssn) | |
4882 | { | |
c79dd5b5 | 4883 | struct iwl_priv *priv = hw->priv; |
8114fcf1 RR |
4884 | int sta_id; |
4885 | DECLARE_MAC_BUF(mac); | |
4886 | ||
4887 | IWL_DEBUG_HT("A-MPDU action on da=%s tid=%d ", | |
4888 | print_mac(mac, addr), tid); | |
4889 | sta_id = iwl4965_hw_find_station(priv, addr); | |
4890 | switch (action) { | |
4891 | case IEEE80211_AMPDU_RX_START: | |
4892 | IWL_DEBUG_HT("start Rx\n"); | |
4893 | iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, *ssn); | |
4894 | break; | |
4895 | case IEEE80211_AMPDU_RX_STOP: | |
4896 | IWL_DEBUG_HT("stop Rx\n"); | |
4897 | iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid); | |
4898 | break; | |
4899 | case IEEE80211_AMPDU_TX_START: | |
4900 | IWL_DEBUG_HT("start Tx\n"); | |
4901 | return iwl4965_mac_ht_tx_agg_start(hw, addr, tid, ssn); | |
4902 | case IEEE80211_AMPDU_TX_STOP: | |
4903 | IWL_DEBUG_HT("stop Tx\n"); | |
4904 | return iwl4965_mac_ht_tx_agg_stop(hw, addr, tid); | |
4905 | default: | |
4906 | IWL_DEBUG_HT("unknown\n"); | |
4907 | return -EINVAL; | |
4908 | break; | |
4909 | } | |
4910 | return 0; | |
4911 | } | |
4912 | ||
c8b0e6e1 | 4913 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c ZY |
4914 | |
4915 | /* Set up 4965-specific Rx frame reply handlers */ | |
c79dd5b5 | 4916 | void iwl4965_hw_rx_handler_setup(struct iwl_priv *priv) |
b481de9c ZY |
4917 | { |
4918 | /* Legacy Rx frames */ | |
857485c0 | 4919 | priv->rx_handlers[REPLY_RX] = iwl4965_rx_reply_rx; |
b481de9c ZY |
4920 | |
4921 | /* High-throughput (HT) Rx frames */ | |
4922 | priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy; | |
4923 | priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx; | |
4924 | ||
4925 | priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] = | |
4926 | iwl4965_rx_missed_beacon_notif; | |
4927 | ||
c8b0e6e1 | 4928 | #ifdef CONFIG_IWL4965_HT |
b481de9c | 4929 | priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba; |
c8b0e6e1 | 4930 | #endif /* CONFIG_IWL4965_HT */ |
b481de9c ZY |
4931 | } |
4932 | ||
c79dd5b5 | 4933 | void iwl4965_hw_setup_deferred_work(struct iwl_priv *priv) |
b481de9c ZY |
4934 | { |
4935 | INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); | |
4936 | INIT_WORK(&priv->statistics_work, iwl4965_bg_statistics_work); | |
c8b0e6e1 | 4937 | #ifdef CONFIG_IWL4965_SENSITIVITY |
b481de9c ZY |
4938 | INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work); |
4939 | #endif | |
b481de9c ZY |
4940 | init_timer(&priv->statistics_periodic); |
4941 | priv->statistics_periodic.data = (unsigned long)priv; | |
4942 | priv->statistics_periodic.function = iwl4965_bg_statistics_periodic; | |
4943 | } | |
4944 | ||
c79dd5b5 | 4945 | void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv) |
b481de9c ZY |
4946 | { |
4947 | del_timer_sync(&priv->statistics_periodic); | |
4948 | ||
4949 | cancel_delayed_work(&priv->init_alive_start); | |
4950 | } | |
4951 | ||
857485c0 TW |
4952 | static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = { |
4953 | .enqueue_hcmd = iwl4965_enqueue_hcmd, | |
4954 | }; | |
4955 | ||
6bc913bd | 4956 | static struct iwl_lib_ops iwl4965_lib = { |
bf85ea4f | 4957 | .init_drv = iwl4965_init_drv, |
6bc913bd AK |
4958 | .eeprom_ops = { |
4959 | .verify_signature = iwlcore_eeprom_verify_signature, | |
4960 | .acquire_semaphore = iwlcore_eeprom_acquire_semaphore, | |
4961 | .release_semaphore = iwlcore_eeprom_release_semaphore, | |
4962 | }, | |
ad97edd2 | 4963 | .radio_kill_sw = iwl4965_radio_kill_sw, |
6bc913bd AK |
4964 | }; |
4965 | ||
4966 | static struct iwl_ops iwl4965_ops = { | |
4967 | .lib = &iwl4965_lib, | |
857485c0 | 4968 | .utils = &iwl4965_hcmd_utils, |
6bc913bd AK |
4969 | }; |
4970 | ||
82b9a121 TW |
4971 | static struct iwl_cfg iwl4965_agn_cfg = { |
4972 | .name = "4965AGN", | |
4bf775cd | 4973 | .fw_name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode", |
82b9a121 | 4974 | .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N, |
6bc913bd | 4975 | .ops = &iwl4965_ops, |
1ea87396 | 4976 | .mod_params = &iwl4965_mod_params, |
82b9a121 TW |
4977 | }; |
4978 | ||
bb8c093b | 4979 | struct pci_device_id iwl4965_hw_card_ids[] = { |
82b9a121 TW |
4980 | {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)}, |
4981 | {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)}, | |
b481de9c ZY |
4982 | {0} |
4983 | }; | |
4984 | ||
bb8c093b | 4985 | MODULE_DEVICE_TABLE(pci, iwl4965_hw_card_ids); |
1ea87396 AK |
4986 | |
4987 | module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444); | |
4988 | MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); | |
4989 | module_param_named(disable, iwl4965_mod_params.disable, int, 0444); | |
4990 | MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])"); | |
4991 | module_param_named(hwcrypto, iwl4965_mod_params.hw_crypto, int, 0444); | |
4992 | MODULE_PARM_DESC(hwcrypto, | |
4993 | "using hardware crypto engine (default 0 [software])\n"); | |
4994 | module_param_named(debug, iwl4965_mod_params.debug, int, 0444); | |
4995 | MODULE_PARM_DESC(debug, "debug output mask"); | |
4996 | module_param_named( | |
4997 | disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444); | |
4998 | MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)"); | |
4999 | ||
5000 | module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444); | |
5001 | MODULE_PARM_DESC(queues_num, "number of hw queues."); | |
5002 | ||
5003 | /* QoS */ | |
5004 | module_param_named(qos_enable, iwl4965_mod_params.enable_qos, int, 0444); | |
5005 | MODULE_PARM_DESC(qos_enable, "enable all QoS functionality"); | |
5006 | module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444); | |
5007 | MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size"); | |
5008 |