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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
1f447808 | 3 | * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. |
b481de9c ZY |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
759ef89f | 22 | * Intel Linux Wireless <ilw@linux.intel.com> |
b481de9c ZY |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
24 | * | |
25 | *****************************************************************************/ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
b481de9c ZY |
29 | #include <linux/init.h> |
30 | #include <linux/pci.h> | |
31 | #include <linux/dma-mapping.h> | |
32 | #include <linux/delay.h> | |
d43c36dc | 33 | #include <linux/sched.h> |
b481de9c ZY |
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" |
3e0d4cb1 | 42 | #include "iwl-dev.h" |
fee1247a | 43 | #include "iwl-core.h" |
3395f6e9 | 44 | #include "iwl-io.h" |
b481de9c | 45 | #include "iwl-helpers.h" |
f0832f13 | 46 | #include "iwl-calib.h" |
5083e563 | 47 | #include "iwl-sta.h" |
e932a609 | 48 | #include "iwl-agn-led.h" |
74bcdb33 | 49 | #include "iwl-agn.h" |
b8c76267 | 50 | #include "iwl-agn-debugfs.h" |
b481de9c | 51 | |
630fe9b6 | 52 | static int iwl4965_send_tx_power(struct iwl_priv *priv); |
3d816c77 | 53 | static int iwl4965_hw_get_temperature(struct iwl_priv *priv); |
630fe9b6 | 54 | |
a0987a8d RC |
55 | /* Highest firmware API version supported */ |
56 | #define IWL4965_UCODE_API_MAX 2 | |
57 | ||
58 | /* Lowest firmware API version supported */ | |
59 | #define IWL4965_UCODE_API_MIN 2 | |
60 | ||
61 | #define IWL4965_FW_PRE "iwlwifi-4965-" | |
62 | #define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode" | |
63 | #define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api) | |
d16dc48a | 64 | |
57aab75a TW |
65 | /* check contents of special bootstrap uCode SRAM */ |
66 | static int iwl4965_verify_bsm(struct iwl_priv *priv) | |
67 | { | |
68 | __le32 *image = priv->ucode_boot.v_addr; | |
69 | u32 len = priv->ucode_boot.len; | |
70 | u32 reg; | |
71 | u32 val; | |
72 | ||
e1623446 | 73 | IWL_DEBUG_INFO(priv, "Begin verify bsm\n"); |
57aab75a TW |
74 | |
75 | /* verify BSM SRAM contents */ | |
76 | val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG); | |
77 | for (reg = BSM_SRAM_LOWER_BOUND; | |
78 | reg < BSM_SRAM_LOWER_BOUND + len; | |
79 | reg += sizeof(u32), image++) { | |
80 | val = iwl_read_prph(priv, reg); | |
81 | if (val != le32_to_cpu(*image)) { | |
15b1687c | 82 | IWL_ERR(priv, "BSM uCode verification failed at " |
57aab75a TW |
83 | "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", |
84 | BSM_SRAM_LOWER_BOUND, | |
85 | reg - BSM_SRAM_LOWER_BOUND, len, | |
86 | val, le32_to_cpu(*image)); | |
87 | return -EIO; | |
88 | } | |
89 | } | |
90 | ||
e1623446 | 91 | IWL_DEBUG_INFO(priv, "BSM bootstrap uCode image OK\n"); |
57aab75a TW |
92 | |
93 | return 0; | |
94 | } | |
95 | ||
96 | /** | |
97 | * iwl4965_load_bsm - Load bootstrap instructions | |
98 | * | |
99 | * BSM operation: | |
100 | * | |
101 | * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program | |
102 | * in special SRAM that does not power down during RFKILL. When powering back | |
103 | * up after power-saving sleeps (or during initial uCode load), the BSM loads | |
104 | * the bootstrap program into the on-board processor, and starts it. | |
105 | * | |
106 | * The bootstrap program loads (via DMA) instructions and data for a new | |
107 | * program from host DRAM locations indicated by the host driver in the | |
108 | * BSM_DRAM_* registers. Once the new program is loaded, it starts | |
109 | * automatically. | |
110 | * | |
111 | * When initializing the NIC, the host driver points the BSM to the | |
112 | * "initialize" uCode image. This uCode sets up some internal data, then | |
113 | * notifies host via "initialize alive" that it is complete. | |
114 | * | |
115 | * The host then replaces the BSM_DRAM_* pointer values to point to the | |
116 | * normal runtime uCode instructions and a backup uCode data cache buffer | |
117 | * (filled initially with starting data values for the on-board processor), | |
118 | * then triggers the "initialize" uCode to load and launch the runtime uCode, | |
119 | * which begins normal operation. | |
120 | * | |
121 | * When doing a power-save shutdown, runtime uCode saves data SRAM into | |
122 | * the backup data cache in DRAM before SRAM is powered down. | |
123 | * | |
124 | * When powering back up, the BSM loads the bootstrap program. This reloads | |
125 | * the runtime uCode instructions and the backup data cache into SRAM, | |
126 | * and re-launches the runtime uCode from where it left off. | |
127 | */ | |
128 | static int iwl4965_load_bsm(struct iwl_priv *priv) | |
129 | { | |
130 | __le32 *image = priv->ucode_boot.v_addr; | |
131 | u32 len = priv->ucode_boot.len; | |
132 | dma_addr_t pinst; | |
133 | dma_addr_t pdata; | |
134 | u32 inst_len; | |
135 | u32 data_len; | |
136 | int i; | |
137 | u32 done; | |
138 | u32 reg_offset; | |
139 | int ret; | |
140 | ||
e1623446 | 141 | IWL_DEBUG_INFO(priv, "Begin load bsm\n"); |
57aab75a | 142 | |
c03ea162 | 143 | priv->ucode_type = UCODE_RT; |
fe9b6b72 | 144 | |
57aab75a | 145 | /* make sure bootstrap program is no larger than BSM's SRAM size */ |
250bdd21 | 146 | if (len > IWL49_MAX_BSM_SIZE) |
57aab75a TW |
147 | return -EINVAL; |
148 | ||
149 | /* Tell bootstrap uCode where to find the "Initialize" uCode | |
150 | * in host DRAM ... host DRAM physical address bits 35:4 for 4965. | |
2d87889f | 151 | * NOTE: iwl_init_alive_start() will replace these values, |
57aab75a | 152 | * after the "initialize" uCode has run, to point to |
2d87889f TW |
153 | * runtime/protocol instructions and backup data cache. |
154 | */ | |
57aab75a TW |
155 | pinst = priv->ucode_init.p_addr >> 4; |
156 | pdata = priv->ucode_init_data.p_addr >> 4; | |
157 | inst_len = priv->ucode_init.len; | |
158 | data_len = priv->ucode_init_data.len; | |
159 | ||
57aab75a TW |
160 | iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); |
161 | iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
162 | iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); | |
163 | iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); | |
164 | ||
165 | /* Fill BSM memory with bootstrap instructions */ | |
166 | for (reg_offset = BSM_SRAM_LOWER_BOUND; | |
167 | reg_offset < BSM_SRAM_LOWER_BOUND + len; | |
168 | reg_offset += sizeof(u32), image++) | |
169 | _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image)); | |
170 | ||
171 | ret = iwl4965_verify_bsm(priv); | |
a8b50a0a | 172 | if (ret) |
57aab75a | 173 | return ret; |
57aab75a TW |
174 | |
175 | /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ | |
176 | iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); | |
250bdd21 | 177 | iwl_write_prph(priv, BSM_WR_MEM_DST_REG, IWL49_RTC_INST_LOWER_BOUND); |
57aab75a TW |
178 | iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); |
179 | ||
180 | /* Load bootstrap code into instruction SRAM now, | |
181 | * to prepare to load "initialize" uCode */ | |
182 | iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START); | |
183 | ||
184 | /* Wait for load of bootstrap uCode to finish */ | |
185 | for (i = 0; i < 100; i++) { | |
186 | done = iwl_read_prph(priv, BSM_WR_CTRL_REG); | |
187 | if (!(done & BSM_WR_CTRL_REG_BIT_START)) | |
188 | break; | |
189 | udelay(10); | |
190 | } | |
191 | if (i < 100) | |
e1623446 | 192 | IWL_DEBUG_INFO(priv, "BSM write complete, poll %d iterations\n", i); |
57aab75a | 193 | else { |
15b1687c | 194 | IWL_ERR(priv, "BSM write did not complete!\n"); |
57aab75a TW |
195 | return -EIO; |
196 | } | |
197 | ||
198 | /* Enable future boot loads whenever power management unit triggers it | |
199 | * (e.g. when powering back up after power-save shutdown) */ | |
200 | iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN); | |
201 | ||
57aab75a TW |
202 | |
203 | return 0; | |
204 | } | |
205 | ||
f3ccc08c EG |
206 | /** |
207 | * iwl4965_set_ucode_ptrs - Set uCode address location | |
208 | * | |
209 | * Tell initialization uCode where to find runtime uCode. | |
210 | * | |
211 | * BSM registers initially contain pointers to initialization uCode. | |
212 | * We need to replace them to load runtime uCode inst and data, | |
213 | * and to save runtime data when powering down. | |
214 | */ | |
215 | static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv) | |
216 | { | |
217 | dma_addr_t pinst; | |
218 | dma_addr_t pdata; | |
f3ccc08c EG |
219 | int ret = 0; |
220 | ||
221 | /* bits 35:4 for 4965 */ | |
222 | pinst = priv->ucode_code.p_addr >> 4; | |
223 | pdata = priv->ucode_data_backup.p_addr >> 4; | |
224 | ||
f3ccc08c EG |
225 | /* Tell bootstrap uCode where to find image to load */ |
226 | iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); | |
227 | iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); | |
228 | iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, | |
229 | priv->ucode_data.len); | |
230 | ||
a96a27f9 | 231 | /* Inst byte count must be last to set up, bit 31 signals uCode |
f3ccc08c EG |
232 | * that all new ptr/size info is in place */ |
233 | iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, | |
234 | priv->ucode_code.len | BSM_DRAM_INST_LOAD); | |
e1623446 | 235 | IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n"); |
f3ccc08c EG |
236 | |
237 | return ret; | |
238 | } | |
239 | ||
240 | /** | |
241 | * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received | |
242 | * | |
243 | * Called after REPLY_ALIVE notification received from "initialize" uCode. | |
244 | * | |
245 | * The 4965 "initialize" ALIVE reply contains calibration data for: | |
246 | * Voltage, temperature, and MIMO tx gain correction, now stored in priv | |
247 | * (3945 does not contain this data). | |
248 | * | |
249 | * Tell "initialize" uCode to go ahead and load the runtime uCode. | |
250 | */ | |
251 | static void iwl4965_init_alive_start(struct iwl_priv *priv) | |
252 | { | |
253 | /* Check alive response for "valid" sign from uCode */ | |
254 | if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { | |
255 | /* We had an error bringing up the hardware, so take it | |
256 | * all the way back down so we can try again */ | |
e1623446 | 257 | IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n"); |
f3ccc08c EG |
258 | goto restart; |
259 | } | |
260 | ||
261 | /* Bootstrap uCode has loaded initialize uCode ... verify inst image. | |
262 | * This is a paranoid check, because we would not have gotten the | |
263 | * "initialize" alive if code weren't properly loaded. */ | |
264 | if (iwl_verify_ucode(priv)) { | |
265 | /* Runtime instruction load was bad; | |
266 | * take it all the way back down so we can try again */ | |
e1623446 | 267 | IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n"); |
f3ccc08c EG |
268 | goto restart; |
269 | } | |
270 | ||
271 | /* Calculate temperature */ | |
91dbc5bd | 272 | priv->temperature = iwl4965_hw_get_temperature(priv); |
f3ccc08c EG |
273 | |
274 | /* Send pointers to protocol/runtime uCode image ... init code will | |
275 | * load and launch runtime uCode, which will send us another "Alive" | |
276 | * notification. */ | |
e1623446 | 277 | IWL_DEBUG_INFO(priv, "Initialization Alive received.\n"); |
f3ccc08c EG |
278 | if (iwl4965_set_ucode_ptrs(priv)) { |
279 | /* Runtime instruction load won't happen; | |
280 | * take it all the way back down so we can try again */ | |
e1623446 | 281 | IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n"); |
f3ccc08c EG |
282 | goto restart; |
283 | } | |
284 | return; | |
285 | ||
286 | restart: | |
287 | queue_work(priv->workqueue, &priv->restart); | |
288 | } | |
289 | ||
7aafef1c | 290 | static bool is_ht40_channel(__le32 rxon_flags) |
b481de9c | 291 | { |
a2b0f02e WYG |
292 | int chan_mod = le32_to_cpu(rxon_flags & RXON_FLG_CHANNEL_MODE_MSK) |
293 | >> RXON_FLG_CHANNEL_MODE_POS; | |
294 | return ((chan_mod == CHANNEL_MODE_PURE_40) || | |
295 | (chan_mod == CHANNEL_MODE_MIXED)); | |
b481de9c ZY |
296 | } |
297 | ||
8614f360 TW |
298 | /* |
299 | * EEPROM handlers | |
300 | */ | |
0ef2ca67 | 301 | static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv) |
8614f360 | 302 | { |
0ef2ca67 | 303 | return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET); |
8614f360 | 304 | } |
b481de9c | 305 | |
da1bc453 | 306 | /* |
a96a27f9 | 307 | * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask |
da1bc453 TW |
308 | * must be called under priv->lock and mac access |
309 | */ | |
310 | static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask) | |
b481de9c | 311 | { |
da1bc453 | 312 | iwl_write_prph(priv, IWL49_SCD_TXFACT, mask); |
b481de9c ZY |
313 | } |
314 | ||
694cc56d | 315 | static void iwl4965_nic_config(struct iwl_priv *priv) |
91238714 TW |
316 | { |
317 | unsigned long flags; | |
694cc56d | 318 | u16 radio_cfg; |
6f4083aa | 319 | |
b481de9c ZY |
320 | spin_lock_irqsave(&priv->lock, flags); |
321 | ||
694cc56d | 322 | radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG); |
b481de9c | 323 | |
694cc56d TW |
324 | /* write radio config values to register */ |
325 | if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX) | |
326 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, | |
327 | EEPROM_RF_CFG_TYPE_MSK(radio_cfg) | | |
328 | EEPROM_RF_CFG_STEP_MSK(radio_cfg) | | |
329 | EEPROM_RF_CFG_DASH_MSK(radio_cfg)); | |
b481de9c | 330 | |
694cc56d | 331 | /* set CSR_HW_CONFIG_REG for uCode use */ |
3395f6e9 | 332 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
a395b920 TW |
333 | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | |
334 | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); | |
b481de9c | 335 | |
694cc56d TW |
336 | priv->calib_info = (struct iwl_eeprom_calib_info *) |
337 | iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET); | |
338 | ||
339 | spin_unlock_irqrestore(&priv->lock, flags); | |
340 | } | |
341 | ||
b481de9c ZY |
342 | /* Reset differential Rx gains in NIC to prepare for chain noise calibration. |
343 | * Called after every association, but this runs only once! | |
344 | * ... once chain noise is calibrated the first time, it's good forever. */ | |
f0832f13 | 345 | static void iwl4965_chain_noise_reset(struct iwl_priv *priv) |
b481de9c | 346 | { |
f0832f13 | 347 | struct iwl_chain_noise_data *data = &(priv->chain_noise_data); |
b481de9c | 348 | |
f4308449 SZ |
349 | if ((data->state == IWL_CHAIN_NOISE_ALIVE) && |
350 | iwl_is_associated(priv)) { | |
f69f42a6 | 351 | struct iwl_calib_diff_gain_cmd cmd; |
b481de9c | 352 | |
f4308449 SZ |
353 | /* clear data for chain noise calibration algorithm */ |
354 | data->chain_noise_a = 0; | |
355 | data->chain_noise_b = 0; | |
356 | data->chain_noise_c = 0; | |
357 | data->chain_signal_a = 0; | |
358 | data->chain_signal_b = 0; | |
359 | data->chain_signal_c = 0; | |
360 | data->beacon_count = 0; | |
361 | ||
b481de9c | 362 | memset(&cmd, 0, sizeof(cmd)); |
0d950d84 | 363 | cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD; |
b481de9c ZY |
364 | cmd.diff_gain_a = 0; |
365 | cmd.diff_gain_b = 0; | |
366 | cmd.diff_gain_c = 0; | |
f0832f13 EG |
367 | if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, |
368 | sizeof(cmd), &cmd)) | |
15b1687c WT |
369 | IWL_ERR(priv, |
370 | "Could not send REPLY_PHY_CALIBRATION_CMD\n"); | |
b481de9c | 371 | data->state = IWL_CHAIN_NOISE_ACCUMULATE; |
e1623446 | 372 | IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); |
b481de9c | 373 | } |
b481de9c ZY |
374 | } |
375 | ||
f0832f13 EG |
376 | static void iwl4965_gain_computation(struct iwl_priv *priv, |
377 | u32 *average_noise, | |
378 | u16 min_average_noise_antenna_i, | |
d8c07e7a WYG |
379 | u32 min_average_noise, |
380 | u8 default_chain) | |
b481de9c | 381 | { |
f0832f13 EG |
382 | int i, ret; |
383 | struct iwl_chain_noise_data *data = &priv->chain_noise_data; | |
b481de9c | 384 | |
f0832f13 | 385 | data->delta_gain_code[min_average_noise_antenna_i] = 0; |
b481de9c | 386 | |
d8c07e7a | 387 | for (i = default_chain; i < NUM_RX_CHAINS; i++) { |
f0832f13 | 388 | s32 delta_g = 0; |
b481de9c | 389 | |
f0832f13 EG |
390 | if (!(data->disconn_array[i]) && |
391 | (data->delta_gain_code[i] == | |
b481de9c | 392 | CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) { |
f0832f13 EG |
393 | delta_g = average_noise[i] - min_average_noise; |
394 | data->delta_gain_code[i] = (u8)((delta_g * 10) / 15); | |
395 | data->delta_gain_code[i] = | |
396 | min(data->delta_gain_code[i], | |
397 | (u8) CHAIN_NOISE_MAX_DELTA_GAIN_CODE); | |
398 | ||
399 | data->delta_gain_code[i] = | |
400 | (data->delta_gain_code[i] | (1 << 2)); | |
401 | } else { | |
402 | data->delta_gain_code[i] = 0; | |
b481de9c | 403 | } |
b481de9c | 404 | } |
e1623446 | 405 | IWL_DEBUG_CALIB(priv, "delta_gain_codes: a %d b %d c %d\n", |
f0832f13 EG |
406 | data->delta_gain_code[0], |
407 | data->delta_gain_code[1], | |
408 | data->delta_gain_code[2]); | |
b481de9c | 409 | |
f0832f13 EG |
410 | /* Differential gain gets sent to uCode only once */ |
411 | if (!data->radio_write) { | |
f69f42a6 | 412 | struct iwl_calib_diff_gain_cmd cmd; |
f0832f13 | 413 | data->radio_write = 1; |
b481de9c | 414 | |
f0832f13 | 415 | memset(&cmd, 0, sizeof(cmd)); |
0d950d84 | 416 | cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD; |
f0832f13 EG |
417 | cmd.diff_gain_a = data->delta_gain_code[0]; |
418 | cmd.diff_gain_b = data->delta_gain_code[1]; | |
419 | cmd.diff_gain_c = data->delta_gain_code[2]; | |
420 | ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, | |
421 | sizeof(cmd), &cmd); | |
422 | if (ret) | |
e1623446 | 423 | IWL_DEBUG_CALIB(priv, "fail sending cmd " |
91dd6c27 | 424 | "REPLY_PHY_CALIBRATION_CMD\n"); |
f0832f13 EG |
425 | |
426 | /* TODO we might want recalculate | |
427 | * rx_chain in rxon cmd */ | |
428 | ||
429 | /* Mark so we run this algo only once! */ | |
430 | data->state = IWL_CHAIN_NOISE_CALIBRATED; | |
b481de9c | 431 | } |
b481de9c ZY |
432 | } |
433 | ||
b481de9c ZY |
434 | static void iwl4965_bg_txpower_work(struct work_struct *work) |
435 | { | |
c79dd5b5 | 436 | struct iwl_priv *priv = container_of(work, struct iwl_priv, |
b481de9c ZY |
437 | txpower_work); |
438 | ||
439 | /* If a scan happened to start before we got here | |
440 | * then just return; the statistics notification will | |
441 | * kick off another scheduled work to compensate for | |
442 | * any temperature delta we missed here. */ | |
443 | if (test_bit(STATUS_EXIT_PENDING, &priv->status) || | |
444 | test_bit(STATUS_SCANNING, &priv->status)) | |
445 | return; | |
446 | ||
447 | mutex_lock(&priv->mutex); | |
448 | ||
a96a27f9 | 449 | /* Regardless of if we are associated, we must reconfigure the |
b481de9c ZY |
450 | * TX power since frames can be sent on non-radar channels while |
451 | * not associated */ | |
630fe9b6 | 452 | iwl4965_send_tx_power(priv); |
b481de9c ZY |
453 | |
454 | /* Update last_temperature to keep is_calib_needed from running | |
455 | * when it isn't needed... */ | |
456 | priv->last_temperature = priv->temperature; | |
457 | ||
458 | mutex_unlock(&priv->mutex); | |
459 | } | |
460 | ||
461 | /* | |
462 | * Acquire priv->lock before calling this function ! | |
463 | */ | |
c79dd5b5 | 464 | static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index) |
b481de9c | 465 | { |
3395f6e9 | 466 | iwl_write_direct32(priv, HBUS_TARG_WRPTR, |
b481de9c | 467 | (index & 0xff) | (txq_id << 8)); |
12a81f60 | 468 | iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index); |
b481de9c ZY |
469 | } |
470 | ||
8b6eaea8 BC |
471 | /** |
472 | * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue | |
473 | * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed | |
474 | * @scd_retry: (1) Indicates queue will be used in aggregation mode | |
475 | * | |
476 | * NOTE: Acquire priv->lock before calling this function ! | |
b481de9c | 477 | */ |
c79dd5b5 | 478 | static void iwl4965_tx_queue_set_status(struct iwl_priv *priv, |
16466903 | 479 | struct iwl_tx_queue *txq, |
b481de9c ZY |
480 | int tx_fifo_id, int scd_retry) |
481 | { | |
482 | int txq_id = txq->q.id; | |
8b6eaea8 BC |
483 | |
484 | /* Find out whether to activate Tx queue */ | |
c3056065 | 485 | int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0; |
b481de9c | 486 | |
8b6eaea8 | 487 | /* Set up and activate */ |
12a81f60 | 488 | iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id), |
038669e4 EG |
489 | (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) | |
490 | (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) | | |
491 | (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) | | |
492 | (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) | | |
493 | IWL49_SCD_QUEUE_STTS_REG_MSK); | |
b481de9c ZY |
494 | |
495 | txq->sched_retry = scd_retry; | |
496 | ||
e1623446 | 497 | IWL_DEBUG_INFO(priv, "%s %s Queue %d on AC %d\n", |
8b6eaea8 | 498 | active ? "Activate" : "Deactivate", |
b481de9c ZY |
499 | scd_retry ? "BA" : "AC", txq_id, tx_fifo_id); |
500 | } | |
501 | ||
edc1a3a0 JB |
502 | static const s8 default_queue_to_tx_fifo[] = { |
503 | IWL_TX_FIFO_VO, | |
504 | IWL_TX_FIFO_VI, | |
505 | IWL_TX_FIFO_BE, | |
506 | IWL_TX_FIFO_BK, | |
038669e4 | 507 | IWL49_CMD_FIFO_NUM, |
edc1a3a0 JB |
508 | IWL_TX_FIFO_UNUSED, |
509 | IWL_TX_FIFO_UNUSED, | |
b481de9c ZY |
510 | }; |
511 | ||
be1f3ab6 | 512 | static int iwl4965_alive_notify(struct iwl_priv *priv) |
b481de9c ZY |
513 | { |
514 | u32 a; | |
b481de9c | 515 | unsigned long flags; |
31a73fe4 | 516 | int i, chan; |
40fc95d5 | 517 | u32 reg_val; |
b481de9c ZY |
518 | |
519 | spin_lock_irqsave(&priv->lock, flags); | |
520 | ||
8b6eaea8 | 521 | /* Clear 4965's internal Tx Scheduler data base */ |
12a81f60 | 522 | priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR); |
038669e4 EG |
523 | a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET; |
524 | for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4) | |
3395f6e9 | 525 | iwl_write_targ_mem(priv, a, 0); |
038669e4 | 526 | for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4) |
3395f6e9 | 527 | iwl_write_targ_mem(priv, a, 0); |
39d5e0ce HW |
528 | for (; a < priv->scd_base_addr + |
529 | IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(priv->hw_params.max_txq_num); a += 4) | |
3395f6e9 | 530 | iwl_write_targ_mem(priv, a, 0); |
b481de9c | 531 | |
8b6eaea8 | 532 | /* Tel 4965 where to find Tx byte count tables */ |
12a81f60 | 533 | iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR, |
4ddbb7d0 | 534 | priv->scd_bc_tbls.dma >> 10); |
8b6eaea8 | 535 | |
31a73fe4 WT |
536 | /* Enable DMA channel */ |
537 | for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++) | |
538 | iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan), | |
539 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | | |
540 | FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); | |
541 | ||
40fc95d5 WT |
542 | /* Update FH chicken bits */ |
543 | reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG); | |
544 | iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, | |
545 | reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); | |
546 | ||
8b6eaea8 | 547 | /* Disable chain mode for all queues */ |
12a81f60 | 548 | iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0); |
b481de9c | 549 | |
8b6eaea8 | 550 | /* Initialize each Tx queue (including the command queue) */ |
5425e490 | 551 | for (i = 0; i < priv->hw_params.max_txq_num; i++) { |
8b6eaea8 BC |
552 | |
553 | /* TFD circular buffer read/write indexes */ | |
12a81f60 | 554 | iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0); |
3395f6e9 | 555 | iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); |
8b6eaea8 BC |
556 | |
557 | /* Max Tx Window size for Scheduler-ACK mode */ | |
3395f6e9 | 558 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
038669e4 EG |
559 | IWL49_SCD_CONTEXT_QUEUE_OFFSET(i), |
560 | (SCD_WIN_SIZE << | |
561 | IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & | |
562 | IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); | |
8b6eaea8 BC |
563 | |
564 | /* Frame limit */ | |
3395f6e9 | 565 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
038669e4 EG |
566 | IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) + |
567 | sizeof(u32), | |
568 | (SCD_FRAME_LIMIT << | |
569 | IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & | |
570 | IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); | |
b481de9c ZY |
571 | |
572 | } | |
12a81f60 | 573 | iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK, |
5425e490 | 574 | (1 << priv->hw_params.max_txq_num) - 1); |
b481de9c | 575 | |
8b6eaea8 | 576 | /* Activate all Tx DMA/FIFO channels */ |
31a73fe4 | 577 | priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6)); |
b481de9c ZY |
578 | |
579 | iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); | |
8b6eaea8 | 580 | |
a9e10fb9 WYG |
581 | /* make sure all queue are not stopped */ |
582 | memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped)); | |
583 | for (i = 0; i < 4; i++) | |
584 | atomic_set(&priv->queue_stop_count[i], 0); | |
585 | ||
dff010ac WYG |
586 | /* reset to 0 to enable all the queue first */ |
587 | priv->txq_ctx_active_msk = 0; | |
8b6eaea8 | 588 | /* Map each Tx/cmd queue to its corresponding fifo */ |
edc1a3a0 | 589 | BUILD_BUG_ON(ARRAY_SIZE(default_queue_to_tx_fifo) != 7); |
b481de9c ZY |
590 | for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { |
591 | int ac = default_queue_to_tx_fifo[i]; | |
edc1a3a0 | 592 | |
36470749 | 593 | iwl_txq_ctx_activate(priv, i); |
edc1a3a0 JB |
594 | |
595 | if (ac == IWL_TX_FIFO_UNUSED) | |
596 | continue; | |
597 | ||
b481de9c ZY |
598 | iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); |
599 | } | |
600 | ||
b481de9c ZY |
601 | spin_unlock_irqrestore(&priv->lock, flags); |
602 | ||
a8b50a0a | 603 | return 0; |
b481de9c ZY |
604 | } |
605 | ||
f0832f13 EG |
606 | static struct iwl_sensitivity_ranges iwl4965_sensitivity = { |
607 | .min_nrg_cck = 97, | |
fe6efb4b | 608 | .max_nrg_cck = 0, /* not used, set to 0 */ |
f0832f13 EG |
609 | |
610 | .auto_corr_min_ofdm = 85, | |
611 | .auto_corr_min_ofdm_mrc = 170, | |
612 | .auto_corr_min_ofdm_x1 = 105, | |
613 | .auto_corr_min_ofdm_mrc_x1 = 220, | |
614 | ||
615 | .auto_corr_max_ofdm = 120, | |
616 | .auto_corr_max_ofdm_mrc = 210, | |
617 | .auto_corr_max_ofdm_x1 = 140, | |
618 | .auto_corr_max_ofdm_mrc_x1 = 270, | |
619 | ||
620 | .auto_corr_min_cck = 125, | |
621 | .auto_corr_max_cck = 200, | |
622 | .auto_corr_min_cck_mrc = 200, | |
623 | .auto_corr_max_cck_mrc = 400, | |
624 | ||
625 | .nrg_th_cck = 100, | |
626 | .nrg_th_ofdm = 100, | |
55036d66 WYG |
627 | |
628 | .barker_corr_th_min = 190, | |
629 | .barker_corr_th_min_mrc = 390, | |
630 | .nrg_th_cca = 62, | |
f0832f13 | 631 | }; |
f0832f13 | 632 | |
62161aef WYG |
633 | static void iwl4965_set_ct_threshold(struct iwl_priv *priv) |
634 | { | |
635 | /* want Kelvin */ | |
672639de WYG |
636 | priv->hw_params.ct_kill_threshold = |
637 | CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD_LEGACY); | |
62161aef WYG |
638 | } |
639 | ||
8b6eaea8 | 640 | /** |
5425e490 | 641 | * iwl4965_hw_set_hw_params |
8b6eaea8 BC |
642 | * |
643 | * Called when initializing driver | |
644 | */ | |
be1f3ab6 | 645 | static int iwl4965_hw_set_hw_params(struct iwl_priv *priv) |
b481de9c | 646 | { |
88804e2b WYG |
647 | if (priv->cfg->mod_params->num_of_queues >= IWL_MIN_NUM_QUEUES && |
648 | priv->cfg->mod_params->num_of_queues <= IWL49_NUM_QUEUES) | |
649 | priv->cfg->num_of_queues = | |
650 | priv->cfg->mod_params->num_of_queues; | |
316c30d9 | 651 | |
88804e2b | 652 | priv->hw_params.max_txq_num = priv->cfg->num_of_queues; |
f3f911d1 | 653 | priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM; |
4ddbb7d0 | 654 | priv->hw_params.scd_bc_tbls_size = |
88804e2b WYG |
655 | priv->cfg->num_of_queues * |
656 | sizeof(struct iwl4965_scd_bc_tbl); | |
a8e74e27 | 657 | priv->hw_params.tfd_size = sizeof(struct iwl_tfd); |
5425e490 TW |
658 | priv->hw_params.max_stations = IWL4965_STATION_COUNT; |
659 | priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID; | |
099b40b7 RR |
660 | priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE; |
661 | priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE; | |
662 | priv->hw_params.max_bsm_size = BSM_SRAM_SIZE; | |
7aafef1c | 663 | priv->hw_params.ht40_channel = BIT(IEEE80211_BAND_5GHZ); |
099b40b7 | 664 | |
141c43a3 WT |
665 | priv->hw_params.rx_wrt_ptr_reg = FH_RSCSR_CHNL0_WPTR; |
666 | ||
52aa081c WYG |
667 | priv->hw_params.tx_chains_num = num_of_ant(priv->cfg->valid_tx_ant); |
668 | priv->hw_params.rx_chains_num = num_of_ant(priv->cfg->valid_rx_ant); | |
669 | priv->hw_params.valid_tx_ant = priv->cfg->valid_tx_ant; | |
670 | priv->hw_params.valid_rx_ant = priv->cfg->valid_rx_ant; | |
62161aef WYG |
671 | if (priv->cfg->ops->lib->temp_ops.set_ct_kill) |
672 | priv->cfg->ops->lib->temp_ops.set_ct_kill(priv); | |
099b40b7 | 673 | |
f0832f13 | 674 | priv->hw_params.sens = &iwl4965_sensitivity; |
a0ee74cf | 675 | priv->hw_params.beacon_time_tsf_bits = IWLAGN_EXT_BEACON_TIME_POS; |
3e82a822 | 676 | |
059ff826 | 677 | return 0; |
b481de9c ZY |
678 | } |
679 | ||
b481de9c ZY |
680 | static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res) |
681 | { | |
682 | s32 sign = 1; | |
683 | ||
684 | if (num < 0) { | |
685 | sign = -sign; | |
686 | num = -num; | |
687 | } | |
688 | if (denom < 0) { | |
689 | sign = -sign; | |
690 | denom = -denom; | |
691 | } | |
692 | *res = 1; | |
693 | *res = ((num * 2 + denom) / (denom * 2)) * sign; | |
694 | ||
695 | return 1; | |
696 | } | |
697 | ||
8b6eaea8 BC |
698 | /** |
699 | * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower | |
700 | * | |
701 | * Determines power supply voltage compensation for txpower calculations. | |
702 | * Returns number of 1/2-dB steps to subtract from gain table index, | |
703 | * to compensate for difference between power supply voltage during | |
704 | * factory measurements, vs. current power supply voltage. | |
705 | * | |
706 | * Voltage indication is higher for lower voltage. | |
707 | * Lower voltage requires more gain (lower gain table index). | |
708 | */ | |
b481de9c ZY |
709 | static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage, |
710 | s32 current_voltage) | |
711 | { | |
712 | s32 comp = 0; | |
713 | ||
714 | if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) || | |
715 | (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage)) | |
716 | return 0; | |
717 | ||
718 | iwl4965_math_div_round(current_voltage - eeprom_voltage, | |
719 | TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp); | |
720 | ||
721 | if (current_voltage > eeprom_voltage) | |
722 | comp *= 2; | |
723 | if ((comp < -2) || (comp > 2)) | |
724 | comp = 0; | |
725 | ||
726 | return comp; | |
727 | } | |
728 | ||
b481de9c ZY |
729 | static s32 iwl4965_get_tx_atten_grp(u16 channel) |
730 | { | |
731 | if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH && | |
732 | channel <= CALIB_IWL_TX_ATTEN_GR5_LCH) | |
733 | return CALIB_CH_GROUP_5; | |
734 | ||
735 | if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH && | |
736 | channel <= CALIB_IWL_TX_ATTEN_GR1_LCH) | |
737 | return CALIB_CH_GROUP_1; | |
738 | ||
739 | if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH && | |
740 | channel <= CALIB_IWL_TX_ATTEN_GR2_LCH) | |
741 | return CALIB_CH_GROUP_2; | |
742 | ||
743 | if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH && | |
744 | channel <= CALIB_IWL_TX_ATTEN_GR3_LCH) | |
745 | return CALIB_CH_GROUP_3; | |
746 | ||
747 | if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH && | |
748 | channel <= CALIB_IWL_TX_ATTEN_GR4_LCH) | |
749 | return CALIB_CH_GROUP_4; | |
750 | ||
b481de9c ZY |
751 | return -1; |
752 | } | |
753 | ||
c79dd5b5 | 754 | static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel) |
b481de9c ZY |
755 | { |
756 | s32 b = -1; | |
757 | ||
758 | for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) { | |
073d3f5f | 759 | if (priv->calib_info->band_info[b].ch_from == 0) |
b481de9c ZY |
760 | continue; |
761 | ||
073d3f5f TW |
762 | if ((channel >= priv->calib_info->band_info[b].ch_from) |
763 | && (channel <= priv->calib_info->band_info[b].ch_to)) | |
b481de9c ZY |
764 | break; |
765 | } | |
766 | ||
767 | return b; | |
768 | } | |
769 | ||
770 | static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2) | |
771 | { | |
772 | s32 val; | |
773 | ||
774 | if (x2 == x1) | |
775 | return y1; | |
776 | else { | |
777 | iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val); | |
778 | return val + y2; | |
779 | } | |
780 | } | |
781 | ||
8b6eaea8 BC |
782 | /** |
783 | * iwl4965_interpolate_chan - Interpolate factory measurements for one channel | |
784 | * | |
785 | * Interpolates factory measurements from the two sample channels within a | |
786 | * sub-band, to apply to channel of interest. Interpolation is proportional to | |
787 | * differences in channel frequencies, which is proportional to differences | |
788 | * in channel number. | |
789 | */ | |
c79dd5b5 | 790 | static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel, |
073d3f5f | 791 | struct iwl_eeprom_calib_ch_info *chan_info) |
b481de9c ZY |
792 | { |
793 | s32 s = -1; | |
794 | u32 c; | |
795 | u32 m; | |
073d3f5f TW |
796 | const struct iwl_eeprom_calib_measure *m1; |
797 | const struct iwl_eeprom_calib_measure *m2; | |
798 | struct iwl_eeprom_calib_measure *omeas; | |
b481de9c ZY |
799 | u32 ch_i1; |
800 | u32 ch_i2; | |
801 | ||
802 | s = iwl4965_get_sub_band(priv, channel); | |
803 | if (s >= EEPROM_TX_POWER_BANDS) { | |
15b1687c | 804 | IWL_ERR(priv, "Tx Power can not find channel %d\n", channel); |
b481de9c ZY |
805 | return -1; |
806 | } | |
807 | ||
073d3f5f TW |
808 | ch_i1 = priv->calib_info->band_info[s].ch1.ch_num; |
809 | ch_i2 = priv->calib_info->band_info[s].ch2.ch_num; | |
b481de9c ZY |
810 | chan_info->ch_num = (u8) channel; |
811 | ||
e1623446 | 812 | IWL_DEBUG_TXPOWER(priv, "channel %d subband %d factory cal ch %d & %d\n", |
b481de9c ZY |
813 | channel, s, ch_i1, ch_i2); |
814 | ||
815 | for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) { | |
816 | for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) { | |
073d3f5f | 817 | m1 = &(priv->calib_info->band_info[s].ch1. |
b481de9c | 818 | measurements[c][m]); |
073d3f5f | 819 | m2 = &(priv->calib_info->band_info[s].ch2. |
b481de9c ZY |
820 | measurements[c][m]); |
821 | omeas = &(chan_info->measurements[c][m]); | |
822 | ||
823 | omeas->actual_pow = | |
824 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
825 | m1->actual_pow, | |
826 | ch_i2, | |
827 | m2->actual_pow); | |
828 | omeas->gain_idx = | |
829 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
830 | m1->gain_idx, ch_i2, | |
831 | m2->gain_idx); | |
832 | omeas->temperature = | |
833 | (u8) iwl4965_interpolate_value(channel, ch_i1, | |
834 | m1->temperature, | |
835 | ch_i2, | |
836 | m2->temperature); | |
837 | omeas->pa_det = | |
838 | (s8) iwl4965_interpolate_value(channel, ch_i1, | |
839 | m1->pa_det, ch_i2, | |
840 | m2->pa_det); | |
841 | ||
e1623446 TW |
842 | IWL_DEBUG_TXPOWER(priv, |
843 | "chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m, | |
844 | m1->actual_pow, m2->actual_pow, omeas->actual_pow); | |
845 | IWL_DEBUG_TXPOWER(priv, | |
846 | "chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m, | |
847 | m1->gain_idx, m2->gain_idx, omeas->gain_idx); | |
848 | IWL_DEBUG_TXPOWER(priv, | |
849 | "chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m, | |
850 | m1->pa_det, m2->pa_det, omeas->pa_det); | |
851 | IWL_DEBUG_TXPOWER(priv, | |
852 | "chain %d meas %d T1=%d T2=%d T=%d\n", c, m, | |
853 | m1->temperature, m2->temperature, | |
854 | omeas->temperature); | |
b481de9c ZY |
855 | } |
856 | } | |
857 | ||
858 | return 0; | |
859 | } | |
860 | ||
861 | /* bit-rate-dependent table to prevent Tx distortion, in half-dB units, | |
862 | * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */ | |
863 | static s32 back_off_table[] = { | |
864 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */ | |
865 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */ | |
866 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */ | |
867 | 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */ | |
868 | 10 /* CCK */ | |
869 | }; | |
870 | ||
871 | /* Thermal compensation values for txpower for various frequency ranges ... | |
872 | * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */ | |
bb8c093b | 873 | static struct iwl4965_txpower_comp_entry { |
b481de9c ZY |
874 | s32 degrees_per_05db_a; |
875 | s32 degrees_per_05db_a_denom; | |
876 | } tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = { | |
877 | {9, 2}, /* group 0 5.2, ch 34-43 */ | |
878 | {4, 1}, /* group 1 5.2, ch 44-70 */ | |
879 | {4, 1}, /* group 2 5.2, ch 71-124 */ | |
880 | {4, 1}, /* group 3 5.2, ch 125-200 */ | |
881 | {3, 1} /* group 4 2.4, ch all */ | |
882 | }; | |
883 | ||
884 | static s32 get_min_power_index(s32 rate_power_index, u32 band) | |
885 | { | |
886 | if (!band) { | |
887 | if ((rate_power_index & 7) <= 4) | |
888 | return MIN_TX_GAIN_INDEX_52GHZ_EXT; | |
889 | } | |
890 | return MIN_TX_GAIN_INDEX; | |
891 | } | |
892 | ||
893 | struct gain_entry { | |
894 | u8 dsp; | |
895 | u8 radio; | |
896 | }; | |
897 | ||
898 | static const struct gain_entry gain_table[2][108] = { | |
899 | /* 5.2GHz power gain index table */ | |
900 | { | |
901 | {123, 0x3F}, /* highest txpower */ | |
902 | {117, 0x3F}, | |
903 | {110, 0x3F}, | |
904 | {104, 0x3F}, | |
905 | {98, 0x3F}, | |
906 | {110, 0x3E}, | |
907 | {104, 0x3E}, | |
908 | {98, 0x3E}, | |
909 | {110, 0x3D}, | |
910 | {104, 0x3D}, | |
911 | {98, 0x3D}, | |
912 | {110, 0x3C}, | |
913 | {104, 0x3C}, | |
914 | {98, 0x3C}, | |
915 | {110, 0x3B}, | |
916 | {104, 0x3B}, | |
917 | {98, 0x3B}, | |
918 | {110, 0x3A}, | |
919 | {104, 0x3A}, | |
920 | {98, 0x3A}, | |
921 | {110, 0x39}, | |
922 | {104, 0x39}, | |
923 | {98, 0x39}, | |
924 | {110, 0x38}, | |
925 | {104, 0x38}, | |
926 | {98, 0x38}, | |
927 | {110, 0x37}, | |
928 | {104, 0x37}, | |
929 | {98, 0x37}, | |
930 | {110, 0x36}, | |
931 | {104, 0x36}, | |
932 | {98, 0x36}, | |
933 | {110, 0x35}, | |
934 | {104, 0x35}, | |
935 | {98, 0x35}, | |
936 | {110, 0x34}, | |
937 | {104, 0x34}, | |
938 | {98, 0x34}, | |
939 | {110, 0x33}, | |
940 | {104, 0x33}, | |
941 | {98, 0x33}, | |
942 | {110, 0x32}, | |
943 | {104, 0x32}, | |
944 | {98, 0x32}, | |
945 | {110, 0x31}, | |
946 | {104, 0x31}, | |
947 | {98, 0x31}, | |
948 | {110, 0x30}, | |
949 | {104, 0x30}, | |
950 | {98, 0x30}, | |
951 | {110, 0x25}, | |
952 | {104, 0x25}, | |
953 | {98, 0x25}, | |
954 | {110, 0x24}, | |
955 | {104, 0x24}, | |
956 | {98, 0x24}, | |
957 | {110, 0x23}, | |
958 | {104, 0x23}, | |
959 | {98, 0x23}, | |
960 | {110, 0x22}, | |
961 | {104, 0x18}, | |
962 | {98, 0x18}, | |
963 | {110, 0x17}, | |
964 | {104, 0x17}, | |
965 | {98, 0x17}, | |
966 | {110, 0x16}, | |
967 | {104, 0x16}, | |
968 | {98, 0x16}, | |
969 | {110, 0x15}, | |
970 | {104, 0x15}, | |
971 | {98, 0x15}, | |
972 | {110, 0x14}, | |
973 | {104, 0x14}, | |
974 | {98, 0x14}, | |
975 | {110, 0x13}, | |
976 | {104, 0x13}, | |
977 | {98, 0x13}, | |
978 | {110, 0x12}, | |
979 | {104, 0x08}, | |
980 | {98, 0x08}, | |
981 | {110, 0x07}, | |
982 | {104, 0x07}, | |
983 | {98, 0x07}, | |
984 | {110, 0x06}, | |
985 | {104, 0x06}, | |
986 | {98, 0x06}, | |
987 | {110, 0x05}, | |
988 | {104, 0x05}, | |
989 | {98, 0x05}, | |
990 | {110, 0x04}, | |
991 | {104, 0x04}, | |
992 | {98, 0x04}, | |
993 | {110, 0x03}, | |
994 | {104, 0x03}, | |
995 | {98, 0x03}, | |
996 | {110, 0x02}, | |
997 | {104, 0x02}, | |
998 | {98, 0x02}, | |
999 | {110, 0x01}, | |
1000 | {104, 0x01}, | |
1001 | {98, 0x01}, | |
1002 | {110, 0x00}, | |
1003 | {104, 0x00}, | |
1004 | {98, 0x00}, | |
1005 | {93, 0x00}, | |
1006 | {88, 0x00}, | |
1007 | {83, 0x00}, | |
1008 | {78, 0x00}, | |
1009 | }, | |
1010 | /* 2.4GHz power gain index table */ | |
1011 | { | |
1012 | {110, 0x3f}, /* highest txpower */ | |
1013 | {104, 0x3f}, | |
1014 | {98, 0x3f}, | |
1015 | {110, 0x3e}, | |
1016 | {104, 0x3e}, | |
1017 | {98, 0x3e}, | |
1018 | {110, 0x3d}, | |
1019 | {104, 0x3d}, | |
1020 | {98, 0x3d}, | |
1021 | {110, 0x3c}, | |
1022 | {104, 0x3c}, | |
1023 | {98, 0x3c}, | |
1024 | {110, 0x3b}, | |
1025 | {104, 0x3b}, | |
1026 | {98, 0x3b}, | |
1027 | {110, 0x3a}, | |
1028 | {104, 0x3a}, | |
1029 | {98, 0x3a}, | |
1030 | {110, 0x39}, | |
1031 | {104, 0x39}, | |
1032 | {98, 0x39}, | |
1033 | {110, 0x38}, | |
1034 | {104, 0x38}, | |
1035 | {98, 0x38}, | |
1036 | {110, 0x37}, | |
1037 | {104, 0x37}, | |
1038 | {98, 0x37}, | |
1039 | {110, 0x36}, | |
1040 | {104, 0x36}, | |
1041 | {98, 0x36}, | |
1042 | {110, 0x35}, | |
1043 | {104, 0x35}, | |
1044 | {98, 0x35}, | |
1045 | {110, 0x34}, | |
1046 | {104, 0x34}, | |
1047 | {98, 0x34}, | |
1048 | {110, 0x33}, | |
1049 | {104, 0x33}, | |
1050 | {98, 0x33}, | |
1051 | {110, 0x32}, | |
1052 | {104, 0x32}, | |
1053 | {98, 0x32}, | |
1054 | {110, 0x31}, | |
1055 | {104, 0x31}, | |
1056 | {98, 0x31}, | |
1057 | {110, 0x30}, | |
1058 | {104, 0x30}, | |
1059 | {98, 0x30}, | |
1060 | {110, 0x6}, | |
1061 | {104, 0x6}, | |
1062 | {98, 0x6}, | |
1063 | {110, 0x5}, | |
1064 | {104, 0x5}, | |
1065 | {98, 0x5}, | |
1066 | {110, 0x4}, | |
1067 | {104, 0x4}, | |
1068 | {98, 0x4}, | |
1069 | {110, 0x3}, | |
1070 | {104, 0x3}, | |
1071 | {98, 0x3}, | |
1072 | {110, 0x2}, | |
1073 | {104, 0x2}, | |
1074 | {98, 0x2}, | |
1075 | {110, 0x1}, | |
1076 | {104, 0x1}, | |
1077 | {98, 0x1}, | |
1078 | {110, 0x0}, | |
1079 | {104, 0x0}, | |
1080 | {98, 0x0}, | |
1081 | {97, 0}, | |
1082 | {96, 0}, | |
1083 | {95, 0}, | |
1084 | {94, 0}, | |
1085 | {93, 0}, | |
1086 | {92, 0}, | |
1087 | {91, 0}, | |
1088 | {90, 0}, | |
1089 | {89, 0}, | |
1090 | {88, 0}, | |
1091 | {87, 0}, | |
1092 | {86, 0}, | |
1093 | {85, 0}, | |
1094 | {84, 0}, | |
1095 | {83, 0}, | |
1096 | {82, 0}, | |
1097 | {81, 0}, | |
1098 | {80, 0}, | |
1099 | {79, 0}, | |
1100 | {78, 0}, | |
1101 | {77, 0}, | |
1102 | {76, 0}, | |
1103 | {75, 0}, | |
1104 | {74, 0}, | |
1105 | {73, 0}, | |
1106 | {72, 0}, | |
1107 | {71, 0}, | |
1108 | {70, 0}, | |
1109 | {69, 0}, | |
1110 | {68, 0}, | |
1111 | {67, 0}, | |
1112 | {66, 0}, | |
1113 | {65, 0}, | |
1114 | {64, 0}, | |
1115 | {63, 0}, | |
1116 | {62, 0}, | |
1117 | {61, 0}, | |
1118 | {60, 0}, | |
1119 | {59, 0}, | |
1120 | } | |
1121 | }; | |
1122 | ||
c79dd5b5 | 1123 | static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel, |
7aafef1c | 1124 | u8 is_ht40, u8 ctrl_chan_high, |
bb8c093b | 1125 | struct iwl4965_tx_power_db *tx_power_tbl) |
b481de9c ZY |
1126 | { |
1127 | u8 saturation_power; | |
1128 | s32 target_power; | |
1129 | s32 user_target_power; | |
1130 | s32 power_limit; | |
1131 | s32 current_temp; | |
1132 | s32 reg_limit; | |
1133 | s32 current_regulatory; | |
1134 | s32 txatten_grp = CALIB_CH_GROUP_MAX; | |
1135 | int i; | |
1136 | int c; | |
bf85ea4f | 1137 | const struct iwl_channel_info *ch_info = NULL; |
073d3f5f TW |
1138 | struct iwl_eeprom_calib_ch_info ch_eeprom_info; |
1139 | const struct iwl_eeprom_calib_measure *measurement; | |
b481de9c ZY |
1140 | s16 voltage; |
1141 | s32 init_voltage; | |
1142 | s32 voltage_compensation; | |
1143 | s32 degrees_per_05db_num; | |
1144 | s32 degrees_per_05db_denom; | |
1145 | s32 factory_temp; | |
1146 | s32 temperature_comp[2]; | |
1147 | s32 factory_gain_index[2]; | |
1148 | s32 factory_actual_pwr[2]; | |
1149 | s32 power_index; | |
1150 | ||
62ea9c5b | 1151 | /* tx_power_user_lmt is in dBm, convert to half-dBm (half-dB units |
b481de9c | 1152 | * are used for indexing into txpower table) */ |
630fe9b6 | 1153 | user_target_power = 2 * priv->tx_power_user_lmt; |
b481de9c ZY |
1154 | |
1155 | /* Get current (RXON) channel, band, width */ | |
7aafef1c WYG |
1156 | IWL_DEBUG_TXPOWER(priv, "chan %d band %d is_ht40 %d\n", channel, band, |
1157 | is_ht40); | |
b481de9c | 1158 | |
630fe9b6 TW |
1159 | ch_info = iwl_get_channel_info(priv, priv->band, channel); |
1160 | ||
1161 | if (!is_channel_valid(ch_info)) | |
b481de9c ZY |
1162 | return -EINVAL; |
1163 | ||
1164 | /* get txatten group, used to select 1) thermal txpower adjustment | |
1165 | * and 2) mimo txpower balance between Tx chains. */ | |
1166 | txatten_grp = iwl4965_get_tx_atten_grp(channel); | |
a3139c59 | 1167 | if (txatten_grp < 0) { |
15b1687c | 1168 | IWL_ERR(priv, "Can't find txatten group for channel %d.\n", |
a3139c59 | 1169 | channel); |
b481de9c | 1170 | return -EINVAL; |
a3139c59 | 1171 | } |
b481de9c | 1172 | |
e1623446 | 1173 | IWL_DEBUG_TXPOWER(priv, "channel %d belongs to txatten group %d\n", |
b481de9c ZY |
1174 | channel, txatten_grp); |
1175 | ||
7aafef1c | 1176 | if (is_ht40) { |
b481de9c ZY |
1177 | if (ctrl_chan_high) |
1178 | channel -= 2; | |
1179 | else | |
1180 | channel += 2; | |
1181 | } | |
1182 | ||
1183 | /* hardware txpower limits ... | |
1184 | * saturation (clipping distortion) txpowers are in half-dBm */ | |
1185 | if (band) | |
073d3f5f | 1186 | saturation_power = priv->calib_info->saturation_power24; |
b481de9c | 1187 | else |
073d3f5f | 1188 | saturation_power = priv->calib_info->saturation_power52; |
b481de9c ZY |
1189 | |
1190 | if (saturation_power < IWL_TX_POWER_SATURATION_MIN || | |
1191 | saturation_power > IWL_TX_POWER_SATURATION_MAX) { | |
1192 | if (band) | |
1193 | saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24; | |
1194 | else | |
1195 | saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52; | |
1196 | } | |
1197 | ||
1198 | /* regulatory txpower limits ... reg_limit values are in half-dBm, | |
1199 | * max_power_avg values are in dBm, convert * 2 */ | |
7aafef1c WYG |
1200 | if (is_ht40) |
1201 | reg_limit = ch_info->ht40_max_power_avg * 2; | |
b481de9c ZY |
1202 | else |
1203 | reg_limit = ch_info->max_power_avg * 2; | |
1204 | ||
1205 | if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) || | |
1206 | (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) { | |
1207 | if (band) | |
1208 | reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24; | |
1209 | else | |
1210 | reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52; | |
1211 | } | |
1212 | ||
1213 | /* Interpolate txpower calibration values for this channel, | |
1214 | * based on factory calibration tests on spaced channels. */ | |
1215 | iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info); | |
1216 | ||
1217 | /* calculate tx gain adjustment based on power supply voltage */ | |
b7bb1756 | 1218 | voltage = le16_to_cpu(priv->calib_info->voltage); |
b481de9c ZY |
1219 | init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage); |
1220 | voltage_compensation = | |
1221 | iwl4965_get_voltage_compensation(voltage, init_voltage); | |
1222 | ||
e1623446 | 1223 | IWL_DEBUG_TXPOWER(priv, "curr volt %d eeprom volt %d volt comp %d\n", |
b481de9c ZY |
1224 | init_voltage, |
1225 | voltage, voltage_compensation); | |
1226 | ||
1227 | /* get current temperature (Celsius) */ | |
1228 | current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN); | |
1229 | current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX); | |
1230 | current_temp = KELVIN_TO_CELSIUS(current_temp); | |
1231 | ||
1232 | /* select thermal txpower adjustment params, based on channel group | |
1233 | * (same frequency group used for mimo txatten adjustment) */ | |
1234 | degrees_per_05db_num = | |
1235 | tx_power_cmp_tble[txatten_grp].degrees_per_05db_a; | |
1236 | degrees_per_05db_denom = | |
1237 | tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom; | |
1238 | ||
1239 | /* get per-chain txpower values from factory measurements */ | |
1240 | for (c = 0; c < 2; c++) { | |
1241 | measurement = &ch_eeprom_info.measurements[c][1]; | |
1242 | ||
1243 | /* txgain adjustment (in half-dB steps) based on difference | |
1244 | * between factory and current temperature */ | |
1245 | factory_temp = measurement->temperature; | |
1246 | iwl4965_math_div_round((current_temp - factory_temp) * | |
1247 | degrees_per_05db_denom, | |
1248 | degrees_per_05db_num, | |
1249 | &temperature_comp[c]); | |
1250 | ||
1251 | factory_gain_index[c] = measurement->gain_idx; | |
1252 | factory_actual_pwr[c] = measurement->actual_pow; | |
1253 | ||
e1623446 TW |
1254 | IWL_DEBUG_TXPOWER(priv, "chain = %d\n", c); |
1255 | IWL_DEBUG_TXPOWER(priv, "fctry tmp %d, " | |
b481de9c ZY |
1256 | "curr tmp %d, comp %d steps\n", |
1257 | factory_temp, current_temp, | |
1258 | temperature_comp[c]); | |
1259 | ||
e1623446 | 1260 | IWL_DEBUG_TXPOWER(priv, "fctry idx %d, fctry pwr %d\n", |
b481de9c ZY |
1261 | factory_gain_index[c], |
1262 | factory_actual_pwr[c]); | |
1263 | } | |
1264 | ||
1265 | /* for each of 33 bit-rates (including 1 for CCK) */ | |
1266 | for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) { | |
1267 | u8 is_mimo_rate; | |
bb8c093b | 1268 | union iwl4965_tx_power_dual_stream tx_power; |
b481de9c ZY |
1269 | |
1270 | /* for mimo, reduce each chain's txpower by half | |
1271 | * (3dB, 6 steps), so total output power is regulatory | |
1272 | * compliant. */ | |
1273 | if (i & 0x8) { | |
1274 | current_regulatory = reg_limit - | |
1275 | IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION; | |
1276 | is_mimo_rate = 1; | |
1277 | } else { | |
1278 | current_regulatory = reg_limit; | |
1279 | is_mimo_rate = 0; | |
1280 | } | |
1281 | ||
1282 | /* find txpower limit, either hardware or regulatory */ | |
1283 | power_limit = saturation_power - back_off_table[i]; | |
1284 | if (power_limit > current_regulatory) | |
1285 | power_limit = current_regulatory; | |
1286 | ||
1287 | /* reduce user's txpower request if necessary | |
1288 | * for this rate on this channel */ | |
1289 | target_power = user_target_power; | |
1290 | if (target_power > power_limit) | |
1291 | target_power = power_limit; | |
1292 | ||
e1623446 | 1293 | IWL_DEBUG_TXPOWER(priv, "rate %d sat %d reg %d usr %d tgt %d\n", |
b481de9c ZY |
1294 | i, saturation_power - back_off_table[i], |
1295 | current_regulatory, user_target_power, | |
1296 | target_power); | |
1297 | ||
1298 | /* for each of 2 Tx chains (radio transmitters) */ | |
1299 | for (c = 0; c < 2; c++) { | |
1300 | s32 atten_value; | |
1301 | ||
1302 | if (is_mimo_rate) | |
1303 | atten_value = | |
1304 | (s32)le32_to_cpu(priv->card_alive_init. | |
1305 | tx_atten[txatten_grp][c]); | |
1306 | else | |
1307 | atten_value = 0; | |
1308 | ||
1309 | /* calculate index; higher index means lower txpower */ | |
1310 | power_index = (u8) (factory_gain_index[c] - | |
1311 | (target_power - | |
1312 | factory_actual_pwr[c]) - | |
1313 | temperature_comp[c] - | |
1314 | voltage_compensation + | |
1315 | atten_value); | |
1316 | ||
e1623446 | 1317 | /* IWL_DEBUG_TXPOWER(priv, "calculated txpower index %d\n", |
b481de9c ZY |
1318 | power_index); */ |
1319 | ||
1320 | if (power_index < get_min_power_index(i, band)) | |
1321 | power_index = get_min_power_index(i, band); | |
1322 | ||
1323 | /* adjust 5 GHz index to support negative indexes */ | |
1324 | if (!band) | |
1325 | power_index += 9; | |
1326 | ||
1327 | /* CCK, rate 32, reduce txpower for CCK */ | |
1328 | if (i == POWER_TABLE_CCK_ENTRY) | |
1329 | power_index += | |
1330 | IWL_TX_POWER_CCK_COMPENSATION_C_STEP; | |
1331 | ||
1332 | /* stay within the table! */ | |
1333 | if (power_index > 107) { | |
39aadf8c | 1334 | IWL_WARN(priv, "txpower index %d > 107\n", |
b481de9c ZY |
1335 | power_index); |
1336 | power_index = 107; | |
1337 | } | |
1338 | if (power_index < 0) { | |
39aadf8c | 1339 | IWL_WARN(priv, "txpower index %d < 0\n", |
b481de9c ZY |
1340 | power_index); |
1341 | power_index = 0; | |
1342 | } | |
1343 | ||
1344 | /* fill txpower command for this rate/chain */ | |
1345 | tx_power.s.radio_tx_gain[c] = | |
1346 | gain_table[band][power_index].radio; | |
1347 | tx_power.s.dsp_predis_atten[c] = | |
1348 | gain_table[band][power_index].dsp; | |
1349 | ||
e1623446 | 1350 | IWL_DEBUG_TXPOWER(priv, "chain %d mimo %d index %d " |
b481de9c ZY |
1351 | "gain 0x%02x dsp %d\n", |
1352 | c, atten_value, power_index, | |
1353 | tx_power.s.radio_tx_gain[c], | |
1354 | tx_power.s.dsp_predis_atten[c]); | |
3ac7f146 | 1355 | } /* for each chain */ |
b481de9c ZY |
1356 | |
1357 | tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw); | |
1358 | ||
3ac7f146 | 1359 | } /* for each rate */ |
b481de9c ZY |
1360 | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | /** | |
630fe9b6 | 1365 | * iwl4965_send_tx_power - Configure the TXPOWER level user limit |
b481de9c | 1366 | * |
7aafef1c | 1367 | * Uses the active RXON for channel, band, and characteristics (ht40, high) |
630fe9b6 | 1368 | * The power limit is taken from priv->tx_power_user_lmt. |
b481de9c | 1369 | */ |
630fe9b6 | 1370 | static int iwl4965_send_tx_power(struct iwl_priv *priv) |
b481de9c | 1371 | { |
bb8c093b | 1372 | struct iwl4965_txpowertable_cmd cmd = { 0 }; |
857485c0 | 1373 | int ret; |
b481de9c | 1374 | u8 band = 0; |
7aafef1c | 1375 | bool is_ht40 = false; |
b481de9c ZY |
1376 | u8 ctrl_chan_high = 0; |
1377 | ||
1378 | if (test_bit(STATUS_SCANNING, &priv->status)) { | |
1379 | /* If this gets hit a lot, switch it to a BUG() and catch | |
1380 | * the stack trace to find out who is calling this during | |
1381 | * a scan. */ | |
39aadf8c | 1382 | IWL_WARN(priv, "TX Power requested while scanning!\n"); |
b481de9c ZY |
1383 | return -EAGAIN; |
1384 | } | |
1385 | ||
8318d78a | 1386 | band = priv->band == IEEE80211_BAND_2GHZ; |
b481de9c | 1387 | |
7aafef1c | 1388 | is_ht40 = is_ht40_channel(priv->active_rxon.flags); |
b481de9c | 1389 | |
7aafef1c | 1390 | if (is_ht40 && |
b481de9c ZY |
1391 | (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) |
1392 | ctrl_chan_high = 1; | |
1393 | ||
1394 | cmd.band = band; | |
1395 | cmd.channel = priv->active_rxon.channel; | |
1396 | ||
857485c0 | 1397 | ret = iwl4965_fill_txpower_tbl(priv, band, |
b481de9c | 1398 | le16_to_cpu(priv->active_rxon.channel), |
7aafef1c | 1399 | is_ht40, ctrl_chan_high, &cmd.tx_power); |
857485c0 TW |
1400 | if (ret) |
1401 | goto out; | |
b481de9c | 1402 | |
857485c0 TW |
1403 | ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); |
1404 | ||
1405 | out: | |
1406 | return ret; | |
b481de9c ZY |
1407 | } |
1408 | ||
7e8c519e TW |
1409 | static int iwl4965_send_rxon_assoc(struct iwl_priv *priv) |
1410 | { | |
1411 | int ret = 0; | |
1412 | struct iwl4965_rxon_assoc_cmd rxon_assoc; | |
c1adf9fb GG |
1413 | const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; |
1414 | const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; | |
7e8c519e TW |
1415 | |
1416 | if ((rxon1->flags == rxon2->flags) && | |
1417 | (rxon1->filter_flags == rxon2->filter_flags) && | |
1418 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
1419 | (rxon1->ofdm_ht_single_stream_basic_rates == | |
1420 | rxon2->ofdm_ht_single_stream_basic_rates) && | |
1421 | (rxon1->ofdm_ht_dual_stream_basic_rates == | |
1422 | rxon2->ofdm_ht_dual_stream_basic_rates) && | |
1423 | (rxon1->rx_chain == rxon2->rx_chain) && | |
1424 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
e1623446 | 1425 | IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); |
7e8c519e TW |
1426 | return 0; |
1427 | } | |
1428 | ||
1429 | rxon_assoc.flags = priv->staging_rxon.flags; | |
1430 | rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; | |
1431 | rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; | |
1432 | rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; | |
1433 | rxon_assoc.reserved = 0; | |
1434 | rxon_assoc.ofdm_ht_single_stream_basic_rates = | |
1435 | priv->staging_rxon.ofdm_ht_single_stream_basic_rates; | |
1436 | rxon_assoc.ofdm_ht_dual_stream_basic_rates = | |
1437 | priv->staging_rxon.ofdm_ht_dual_stream_basic_rates; | |
1438 | rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain; | |
1439 | ||
1440 | ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC, | |
1441 | sizeof(rxon_assoc), &rxon_assoc, NULL); | |
1442 | if (ret) | |
1443 | return ret; | |
1444 | ||
1445 | return ret; | |
1446 | } | |
1447 | ||
79d07325 WYG |
1448 | static int iwl4965_hw_channel_switch(struct iwl_priv *priv, |
1449 | struct ieee80211_channel_switch *ch_switch) | |
b481de9c ZY |
1450 | { |
1451 | int rc; | |
1452 | u8 band = 0; | |
7aafef1c | 1453 | bool is_ht40 = false; |
b481de9c | 1454 | u8 ctrl_chan_high = 0; |
4a56e965 | 1455 | struct iwl4965_channel_switch_cmd cmd; |
bf85ea4f | 1456 | const struct iwl_channel_info *ch_info; |
79d07325 WYG |
1457 | u32 switch_time_in_usec, ucode_switch_time; |
1458 | u16 ch; | |
1459 | u32 tsf_low; | |
1460 | u8 switch_count; | |
1461 | u16 beacon_interval = le16_to_cpu(priv->rxon_timing.beacon_interval); | |
1462 | struct ieee80211_vif *vif = priv->vif; | |
8318d78a | 1463 | band = priv->band == IEEE80211_BAND_2GHZ; |
b481de9c | 1464 | |
7aafef1c | 1465 | is_ht40 = is_ht40_channel(priv->staging_rxon.flags); |
b481de9c | 1466 | |
7aafef1c | 1467 | if (is_ht40 && |
0924e519 | 1468 | (priv->staging_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK)) |
b481de9c ZY |
1469 | ctrl_chan_high = 1; |
1470 | ||
1471 | cmd.band = band; | |
1472 | cmd.expect_beacon = 0; | |
79d07325 WYG |
1473 | ch = ieee80211_frequency_to_channel(ch_switch->channel->center_freq); |
1474 | cmd.channel = cpu_to_le16(ch); | |
0924e519 WYG |
1475 | cmd.rxon_flags = priv->staging_rxon.flags; |
1476 | cmd.rxon_filter_flags = priv->staging_rxon.filter_flags; | |
79d07325 WYG |
1477 | switch_count = ch_switch->count; |
1478 | tsf_low = ch_switch->timestamp & 0x0ffffffff; | |
1479 | /* | |
1480 | * calculate the ucode channel switch time | |
1481 | * adding TSF as one of the factor for when to switch | |
1482 | */ | |
1483 | if ((priv->ucode_beacon_time > tsf_low) && beacon_interval) { | |
1484 | if (switch_count > ((priv->ucode_beacon_time - tsf_low) / | |
1485 | beacon_interval)) { | |
1486 | switch_count -= (priv->ucode_beacon_time - | |
1487 | tsf_low) / beacon_interval; | |
1488 | } else | |
1489 | switch_count = 0; | |
1490 | } | |
1491 | if (switch_count <= 1) | |
1492 | cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time); | |
1493 | else { | |
1494 | switch_time_in_usec = | |
1495 | vif->bss_conf.beacon_int * switch_count * TIME_UNIT; | |
1496 | ucode_switch_time = iwl_usecs_to_beacons(priv, | |
1497 | switch_time_in_usec, | |
1498 | beacon_interval); | |
1499 | cmd.switch_time = iwl_add_beacon_time(priv, | |
1500 | priv->ucode_beacon_time, | |
1501 | ucode_switch_time, | |
1502 | beacon_interval); | |
1503 | } | |
1504 | IWL_DEBUG_11H(priv, "uCode time for the switch is 0x%x\n", | |
1505 | cmd.switch_time); | |
1506 | ch_info = iwl_get_channel_info(priv, priv->band, ch); | |
b481de9c ZY |
1507 | if (ch_info) |
1508 | cmd.expect_beacon = is_channel_radar(ch_info); | |
4a56e965 WYG |
1509 | else { |
1510 | IWL_ERR(priv, "invalid channel switch from %u to %u\n", | |
79d07325 | 1511 | priv->active_rxon.channel, ch); |
4a56e965 WYG |
1512 | return -EFAULT; |
1513 | } | |
b481de9c | 1514 | |
79d07325 | 1515 | rc = iwl4965_fill_txpower_tbl(priv, band, ch, is_ht40, |
b481de9c ZY |
1516 | ctrl_chan_high, &cmd.tx_power); |
1517 | if (rc) { | |
e1623446 | 1518 | IWL_DEBUG_11H(priv, "error:%d fill txpower_tbl\n", rc); |
b481de9c ZY |
1519 | return rc; |
1520 | } | |
1521 | ||
79d07325 | 1522 | priv->switch_rxon.channel = cmd.channel; |
0924e519 WYG |
1523 | priv->switch_rxon.switch_in_progress = true; |
1524 | ||
1525 | return iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd); | |
b481de9c ZY |
1526 | } |
1527 | ||
8b6eaea8 | 1528 | /** |
e2a722eb | 1529 | * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array |
8b6eaea8 | 1530 | */ |
e2a722eb | 1531 | static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv, |
16466903 | 1532 | struct iwl_tx_queue *txq, |
e2a722eb | 1533 | u16 byte_cnt) |
b481de9c | 1534 | { |
4ddbb7d0 | 1535 | struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr; |
127901ab TW |
1536 | int txq_id = txq->q.id; |
1537 | int write_ptr = txq->q.write_ptr; | |
1538 | int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE; | |
1539 | __le16 bc_ent; | |
b481de9c | 1540 | |
127901ab | 1541 | WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX); |
b481de9c | 1542 | |
127901ab | 1543 | bc_ent = cpu_to_le16(len & 0xFFF); |
8b6eaea8 | 1544 | /* Set up byte count within first 256 entries */ |
4ddbb7d0 | 1545 | scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent; |
b481de9c | 1546 | |
8b6eaea8 | 1547 | /* If within first 64 entries, duplicate at end */ |
127901ab | 1548 | if (write_ptr < TFD_QUEUE_SIZE_BC_DUP) |
4ddbb7d0 | 1549 | scd_bc_tbl[txq_id]. |
127901ab | 1550 | tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent; |
b481de9c ZY |
1551 | } |
1552 | ||
b481de9c ZY |
1553 | /** |
1554 | * sign_extend - Sign extend a value using specified bit as sign-bit | |
1555 | * | |
1556 | * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1 | |
1557 | * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7. | |
1558 | * | |
1559 | * @param oper value to sign extend | |
1560 | * @param index 0 based bit index (0<=index<32) to sign bit | |
1561 | */ | |
1562 | static s32 sign_extend(u32 oper, int index) | |
1563 | { | |
1564 | u8 shift = 31 - index; | |
1565 | ||
1566 | return (s32)(oper << shift) >> shift; | |
1567 | } | |
1568 | ||
1569 | /** | |
91dbc5bd | 1570 | * iwl4965_hw_get_temperature - return the calibrated temperature (in Kelvin) |
b481de9c ZY |
1571 | * @statistics: Provides the temperature reading from the uCode |
1572 | * | |
1573 | * A return of <0 indicates bogus data in the statistics | |
1574 | */ | |
3d816c77 | 1575 | static int iwl4965_hw_get_temperature(struct iwl_priv *priv) |
b481de9c ZY |
1576 | { |
1577 | s32 temperature; | |
1578 | s32 vt; | |
1579 | s32 R1, R2, R3; | |
1580 | u32 R4; | |
1581 | ||
1582 | if (test_bit(STATUS_TEMPERATURE, &priv->status) && | |
f3aebeee WYG |
1583 | (priv->_agn.statistics.flag & |
1584 | STATISTICS_REPLY_FLG_HT40_MODE_MSK)) { | |
7aafef1c | 1585 | IWL_DEBUG_TEMP(priv, "Running HT40 temperature calibration\n"); |
b481de9c ZY |
1586 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]); |
1587 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]); | |
1588 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]); | |
1589 | R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]); | |
1590 | } else { | |
e1623446 | 1591 | IWL_DEBUG_TEMP(priv, "Running temperature calibration\n"); |
b481de9c ZY |
1592 | R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]); |
1593 | R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]); | |
1594 | R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]); | |
1595 | R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]); | |
1596 | } | |
1597 | ||
1598 | /* | |
8b6eaea8 | 1599 | * Temperature is only 23 bits, so sign extend out to 32. |
b481de9c ZY |
1600 | * |
1601 | * NOTE If we haven't received a statistics notification yet | |
1602 | * with an updated temperature, use R4 provided to us in the | |
8b6eaea8 BC |
1603 | * "initialize" ALIVE response. |
1604 | */ | |
b481de9c ZY |
1605 | if (!test_bit(STATUS_TEMPERATURE, &priv->status)) |
1606 | vt = sign_extend(R4, 23); | |
1607 | else | |
325322ee WYG |
1608 | vt = sign_extend(le32_to_cpu(priv->_agn.statistics. |
1609 | general.common.temperature), 23); | |
b481de9c | 1610 | |
e1623446 | 1611 | IWL_DEBUG_TEMP(priv, "Calib values R[1-3]: %d %d %d R4: %d\n", R1, R2, R3, vt); |
b481de9c ZY |
1612 | |
1613 | if (R3 == R1) { | |
15b1687c | 1614 | IWL_ERR(priv, "Calibration conflict R1 == R3\n"); |
b481de9c ZY |
1615 | return -1; |
1616 | } | |
1617 | ||
1618 | /* Calculate temperature in degrees Kelvin, adjust by 97%. | |
1619 | * Add offset to center the adjustment around 0 degrees Centigrade. */ | |
1620 | temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2); | |
1621 | temperature /= (R3 - R1); | |
91dbc5bd | 1622 | temperature = (temperature * 97) / 100 + TEMPERATURE_CALIB_KELVIN_OFFSET; |
b481de9c | 1623 | |
e1623446 | 1624 | IWL_DEBUG_TEMP(priv, "Calibrated temperature: %dK, %dC\n", |
91dbc5bd | 1625 | temperature, KELVIN_TO_CELSIUS(temperature)); |
b481de9c ZY |
1626 | |
1627 | return temperature; | |
1628 | } | |
1629 | ||
1630 | /* Adjust Txpower only if temperature variance is greater than threshold. */ | |
1631 | #define IWL_TEMPERATURE_THRESHOLD 3 | |
1632 | ||
1633 | /** | |
1634 | * iwl4965_is_temp_calib_needed - determines if new calibration is needed | |
1635 | * | |
1636 | * If the temperature changed has changed sufficiently, then a recalibration | |
1637 | * is needed. | |
1638 | * | |
1639 | * Assumes caller will replace priv->last_temperature once calibration | |
1640 | * executed. | |
1641 | */ | |
c79dd5b5 | 1642 | static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv) |
b481de9c ZY |
1643 | { |
1644 | int temp_diff; | |
1645 | ||
1646 | if (!test_bit(STATUS_STATISTICS, &priv->status)) { | |
e1623446 | 1647 | IWL_DEBUG_TEMP(priv, "Temperature not updated -- no statistics.\n"); |
b481de9c ZY |
1648 | return 0; |
1649 | } | |
1650 | ||
1651 | temp_diff = priv->temperature - priv->last_temperature; | |
1652 | ||
1653 | /* get absolute value */ | |
1654 | if (temp_diff < 0) { | |
91dd6c27 | 1655 | IWL_DEBUG_POWER(priv, "Getting cooler, delta %d\n", temp_diff); |
b481de9c ZY |
1656 | temp_diff = -temp_diff; |
1657 | } else if (temp_diff == 0) | |
91dd6c27 | 1658 | IWL_DEBUG_POWER(priv, "Temperature unchanged\n"); |
b481de9c | 1659 | else |
91dd6c27 | 1660 | IWL_DEBUG_POWER(priv, "Getting warmer, delta %d\n", temp_diff); |
b481de9c ZY |
1661 | |
1662 | if (temp_diff < IWL_TEMPERATURE_THRESHOLD) { | |
91dd6c27 | 1663 | IWL_DEBUG_POWER(priv, " => thermal txpower calib not needed\n"); |
b481de9c ZY |
1664 | return 0; |
1665 | } | |
1666 | ||
91dd6c27 | 1667 | IWL_DEBUG_POWER(priv, " => thermal txpower calib needed\n"); |
b481de9c ZY |
1668 | |
1669 | return 1; | |
1670 | } | |
1671 | ||
5225640b | 1672 | static void iwl4965_temperature_calib(struct iwl_priv *priv) |
b481de9c | 1673 | { |
b481de9c | 1674 | s32 temp; |
b481de9c | 1675 | |
91dbc5bd | 1676 | temp = iwl4965_hw_get_temperature(priv); |
b481de9c ZY |
1677 | if (temp < 0) |
1678 | return; | |
1679 | ||
1680 | if (priv->temperature != temp) { | |
1681 | if (priv->temperature) | |
e1623446 | 1682 | IWL_DEBUG_TEMP(priv, "Temperature changed " |
b481de9c ZY |
1683 | "from %dC to %dC\n", |
1684 | KELVIN_TO_CELSIUS(priv->temperature), | |
1685 | KELVIN_TO_CELSIUS(temp)); | |
1686 | else | |
e1623446 | 1687 | IWL_DEBUG_TEMP(priv, "Temperature " |
b481de9c ZY |
1688 | "initialized to %dC\n", |
1689 | KELVIN_TO_CELSIUS(temp)); | |
1690 | } | |
1691 | ||
1692 | priv->temperature = temp; | |
39b73fb1 | 1693 | iwl_tt_handler(priv); |
b481de9c ZY |
1694 | set_bit(STATUS_TEMPERATURE, &priv->status); |
1695 | ||
203566f3 EG |
1696 | if (!priv->disable_tx_power_cal && |
1697 | unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && | |
1698 | iwl4965_is_temp_calib_needed(priv)) | |
b481de9c ZY |
1699 | queue_work(priv->workqueue, &priv->txpower_work); |
1700 | } | |
1701 | ||
fe01b477 RR |
1702 | /** |
1703 | * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration | |
1704 | */ | |
c79dd5b5 | 1705 | static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, |
fe01b477 RR |
1706 | u16 txq_id) |
1707 | { | |
1708 | /* Simply stop the queue, but don't change any configuration; | |
1709 | * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ | |
3395f6e9 | 1710 | iwl_write_prph(priv, |
12a81f60 | 1711 | IWL49_SCD_QUEUE_STATUS_BITS(txq_id), |
038669e4 EG |
1712 | (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)| |
1713 | (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); | |
fe01b477 | 1714 | } |
b481de9c | 1715 | |
fe01b477 | 1716 | /** |
7f3e4bb6 | 1717 | * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE |
b095d03a | 1718 | * priv->lock must be held by the caller |
fe01b477 | 1719 | */ |
30e553e3 TW |
1720 | static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, |
1721 | u16 ssn_idx, u8 tx_fifo) | |
fe01b477 | 1722 | { |
9f17b318 | 1723 | if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || |
88804e2b WYG |
1724 | (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues |
1725 | <= txq_id)) { | |
39aadf8c WT |
1726 | IWL_WARN(priv, |
1727 | "queue number out of range: %d, must be %d to %d\n", | |
9f17b318 | 1728 | txq_id, IWL49_FIRST_AMPDU_QUEUE, |
88804e2b WYG |
1729 | IWL49_FIRST_AMPDU_QUEUE + |
1730 | priv->cfg->num_of_ampdu_queues - 1); | |
fe01b477 | 1731 | return -EINVAL; |
b481de9c ZY |
1732 | } |
1733 | ||
fe01b477 RR |
1734 | iwl4965_tx_queue_stop_scheduler(priv, txq_id); |
1735 | ||
12a81f60 | 1736 | iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); |
fe01b477 RR |
1737 | |
1738 | priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); | |
1739 | priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); | |
1740 | /* supposes that ssn_idx is valid (!= 0xFFF) */ | |
1741 | iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); | |
1742 | ||
12a81f60 | 1743 | iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); |
36470749 | 1744 | iwl_txq_ctx_deactivate(priv, txq_id); |
fe01b477 RR |
1745 | iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); |
1746 | ||
1747 | return 0; | |
1748 | } | |
b481de9c | 1749 | |
8b6eaea8 BC |
1750 | /** |
1751 | * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue | |
1752 | */ | |
c79dd5b5 | 1753 | static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid, |
b481de9c ZY |
1754 | u16 txq_id) |
1755 | { | |
1756 | u32 tbl_dw_addr; | |
1757 | u32 tbl_dw; | |
1758 | u16 scd_q2ratid; | |
1759 | ||
30e553e3 | 1760 | scd_q2ratid = ra_tid & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK; |
b481de9c ZY |
1761 | |
1762 | tbl_dw_addr = priv->scd_base_addr + | |
038669e4 | 1763 | IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); |
b481de9c | 1764 | |
3395f6e9 | 1765 | tbl_dw = iwl_read_targ_mem(priv, tbl_dw_addr); |
b481de9c ZY |
1766 | |
1767 | if (txq_id & 0x1) | |
1768 | tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF); | |
1769 | else | |
1770 | tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000); | |
1771 | ||
3395f6e9 | 1772 | iwl_write_targ_mem(priv, tbl_dw_addr, tbl_dw); |
b481de9c ZY |
1773 | |
1774 | return 0; | |
1775 | } | |
1776 | ||
fe01b477 | 1777 | |
b481de9c | 1778 | /** |
8b6eaea8 BC |
1779 | * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue |
1780 | * | |
7f3e4bb6 | 1781 | * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE, |
8b6eaea8 | 1782 | * i.e. it must be one of the higher queues used for aggregation |
b481de9c | 1783 | */ |
30e553e3 TW |
1784 | static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id, |
1785 | int tx_fifo, int sta_id, int tid, u16 ssn_idx) | |
b481de9c ZY |
1786 | { |
1787 | unsigned long flags; | |
b481de9c | 1788 | u16 ra_tid; |
4620fefa | 1789 | int ret; |
b481de9c | 1790 | |
9f17b318 | 1791 | if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || |
88804e2b WYG |
1792 | (IWL49_FIRST_AMPDU_QUEUE + priv->cfg->num_of_ampdu_queues |
1793 | <= txq_id)) { | |
39aadf8c WT |
1794 | IWL_WARN(priv, |
1795 | "queue number out of range: %d, must be %d to %d\n", | |
9f17b318 | 1796 | txq_id, IWL49_FIRST_AMPDU_QUEUE, |
88804e2b WYG |
1797 | IWL49_FIRST_AMPDU_QUEUE + |
1798 | priv->cfg->num_of_ampdu_queues - 1); | |
9f17b318 TW |
1799 | return -EINVAL; |
1800 | } | |
b481de9c ZY |
1801 | |
1802 | ra_tid = BUILD_RAxTID(sta_id, tid); | |
1803 | ||
8b6eaea8 | 1804 | /* Modify device's station table to Tx this TID */ |
4620fefa JB |
1805 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
1806 | if (ret) | |
1807 | return ret; | |
b481de9c ZY |
1808 | |
1809 | spin_lock_irqsave(&priv->lock, flags); | |
b481de9c | 1810 | |
8b6eaea8 | 1811 | /* Stop this Tx queue before configuring it */ |
b481de9c ZY |
1812 | iwl4965_tx_queue_stop_scheduler(priv, txq_id); |
1813 | ||
8b6eaea8 | 1814 | /* Map receiver-address / traffic-ID to this queue */ |
b481de9c ZY |
1815 | iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id); |
1816 | ||
8b6eaea8 | 1817 | /* Set this queue as a chain-building queue */ |
12a81f60 | 1818 | iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); |
b481de9c | 1819 | |
8b6eaea8 BC |
1820 | /* Place first TFD at index corresponding to start sequence number. |
1821 | * Assumes that ssn_idx is valid (!= 0xFFF) */ | |
fc4b6853 TW |
1822 | priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); |
1823 | priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); | |
b481de9c ZY |
1824 | iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); |
1825 | ||
8b6eaea8 | 1826 | /* Set up Tx window size and frame limit for this queue */ |
3395f6e9 | 1827 | iwl_write_targ_mem(priv, |
038669e4 EG |
1828 | priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id), |
1829 | (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & | |
1830 | IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); | |
b481de9c | 1831 | |
3395f6e9 | 1832 | iwl_write_targ_mem(priv, priv->scd_base_addr + |
038669e4 EG |
1833 | IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), |
1834 | (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) | |
1835 | & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); | |
b481de9c | 1836 | |
12a81f60 | 1837 | iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); |
b481de9c | 1838 | |
8b6eaea8 | 1839 | /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ |
b481de9c ZY |
1840 | iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1); |
1841 | ||
b481de9c ZY |
1842 | spin_unlock_irqrestore(&priv->lock, flags); |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
133636de | 1847 | |
c1adf9fb GG |
1848 | static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len) |
1849 | { | |
1850 | switch (cmd_id) { | |
1851 | case REPLY_RXON: | |
1852 | return (u16) sizeof(struct iwl4965_rxon_cmd); | |
1853 | default: | |
1854 | return len; | |
1855 | } | |
1856 | } | |
1857 | ||
133636de TW |
1858 | static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) |
1859 | { | |
1860 | struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data; | |
1861 | addsta->mode = cmd->mode; | |
1862 | memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); | |
1863 | memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo)); | |
1864 | addsta->station_flags = cmd->station_flags; | |
1865 | addsta->station_flags_msk = cmd->station_flags_msk; | |
1866 | addsta->tid_disable_tx = cmd->tid_disable_tx; | |
1867 | addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; | |
1868 | addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; | |
1869 | addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; | |
9bb487b4 | 1870 | addsta->sleep_tx_count = cmd->sleep_tx_count; |
c1b4aa3f | 1871 | addsta->reserved1 = cpu_to_le16(0); |
62624083 | 1872 | addsta->reserved2 = cpu_to_le16(0); |
133636de TW |
1873 | |
1874 | return (u16)sizeof(struct iwl4965_addsta_cmd); | |
1875 | } | |
f20217d9 | 1876 | |
f20217d9 TW |
1877 | static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp) |
1878 | { | |
25a6572c | 1879 | return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN; |
f20217d9 TW |
1880 | } |
1881 | ||
1882 | /** | |
a96a27f9 | 1883 | * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue |
f20217d9 TW |
1884 | */ |
1885 | static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv, | |
1886 | struct iwl_ht_agg *agg, | |
25a6572c TW |
1887 | struct iwl4965_tx_resp *tx_resp, |
1888 | int txq_id, u16 start_idx) | |
f20217d9 TW |
1889 | { |
1890 | u16 status; | |
25a6572c | 1891 | struct agg_tx_status *frame_status = tx_resp->u.agg_status; |
f20217d9 TW |
1892 | struct ieee80211_tx_info *info = NULL; |
1893 | struct ieee80211_hdr *hdr = NULL; | |
e7d326ac | 1894 | u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
25a6572c | 1895 | int i, sh, idx; |
f20217d9 | 1896 | u16 seq; |
f20217d9 | 1897 | if (agg->wait_for_ba) |
e1623446 | 1898 | IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n"); |
f20217d9 TW |
1899 | |
1900 | agg->frame_count = tx_resp->frame_count; | |
1901 | agg->start_idx = start_idx; | |
e7d326ac | 1902 | agg->rate_n_flags = rate_n_flags; |
f20217d9 TW |
1903 | agg->bitmap = 0; |
1904 | ||
3fd07a1e | 1905 | /* num frames attempted by Tx command */ |
f20217d9 TW |
1906 | if (agg->frame_count == 1) { |
1907 | /* Only one frame was attempted; no block-ack will arrive */ | |
1908 | status = le16_to_cpu(frame_status[0].status); | |
25a6572c | 1909 | idx = start_idx; |
f20217d9 TW |
1910 | |
1911 | /* FIXME: code repetition */ | |
e1623446 | 1912 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n", |
f20217d9 TW |
1913 | agg->frame_count, agg->start_idx, idx); |
1914 | ||
ff0d91c3 | 1915 | info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb); |
e6a9854b | 1916 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
f20217d9 | 1917 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
c397bf15 | 1918 | info->flags |= iwl_tx_status_to_mac80211(status); |
8d801080 | 1919 | iwlagn_hwrate_to_tx_control(priv, rate_n_flags, info); |
f20217d9 TW |
1920 | /* FIXME: code repetition end */ |
1921 | ||
e1623446 | 1922 | IWL_DEBUG_TX_REPLY(priv, "1 Frame 0x%x failure :%d\n", |
f20217d9 | 1923 | status & 0xff, tx_resp->failure_frame); |
e1623446 | 1924 | IWL_DEBUG_TX_REPLY(priv, "Rate Info rate_n_flags=%x\n", rate_n_flags); |
f20217d9 TW |
1925 | |
1926 | agg->wait_for_ba = 0; | |
1927 | } else { | |
1928 | /* Two or more frames were attempted; expect block-ack */ | |
1929 | u64 bitmap = 0; | |
1930 | int start = agg->start_idx; | |
1931 | ||
1932 | /* Construct bit-map of pending frames within Tx window */ | |
1933 | for (i = 0; i < agg->frame_count; i++) { | |
1934 | u16 sc; | |
1935 | status = le16_to_cpu(frame_status[i].status); | |
1936 | seq = le16_to_cpu(frame_status[i].sequence); | |
1937 | idx = SEQ_TO_INDEX(seq); | |
1938 | txq_id = SEQ_TO_QUEUE(seq); | |
1939 | ||
1940 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | | |
1941 | AGG_TX_STATE_ABORT_MSK)) | |
1942 | continue; | |
1943 | ||
e1623446 | 1944 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n", |
f20217d9 TW |
1945 | agg->frame_count, txq_id, idx); |
1946 | ||
1947 | hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx); | |
6c6a22e2 SG |
1948 | if (!hdr) { |
1949 | IWL_ERR(priv, | |
1950 | "BUG_ON idx doesn't point to valid skb" | |
1951 | " idx=%d, txq_id=%d\n", idx, txq_id); | |
1952 | return -1; | |
1953 | } | |
f20217d9 TW |
1954 | |
1955 | sc = le16_to_cpu(hdr->seq_ctrl); | |
1956 | if (idx != (SEQ_TO_SN(sc) & 0xff)) { | |
15b1687c WT |
1957 | IWL_ERR(priv, |
1958 | "BUG_ON idx doesn't match seq control" | |
1959 | " idx=%d, seq_idx=%d, seq=%d\n", | |
1960 | idx, SEQ_TO_SN(sc), hdr->seq_ctrl); | |
f20217d9 TW |
1961 | return -1; |
1962 | } | |
1963 | ||
e1623446 | 1964 | IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n", |
f20217d9 TW |
1965 | i, idx, SEQ_TO_SN(sc)); |
1966 | ||
1967 | sh = idx - start; | |
1968 | if (sh > 64) { | |
1969 | sh = (start - idx) + 0xff; | |
1970 | bitmap = bitmap << sh; | |
1971 | sh = 0; | |
1972 | start = idx; | |
1973 | } else if (sh < -64) | |
1974 | sh = 0xff - (start - idx); | |
1975 | else if (sh < 0) { | |
1976 | sh = start - idx; | |
1977 | start = idx; | |
1978 | bitmap = bitmap << sh; | |
1979 | sh = 0; | |
1980 | } | |
4aa41f12 | 1981 | bitmap |= 1ULL << sh; |
e1623446 | 1982 | IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n", |
4aa41f12 | 1983 | start, (unsigned long long)bitmap); |
f20217d9 TW |
1984 | } |
1985 | ||
1986 | agg->bitmap = bitmap; | |
1987 | agg->start_idx = start; | |
e1623446 | 1988 | IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n", |
f20217d9 TW |
1989 | agg->frame_count, agg->start_idx, |
1990 | (unsigned long long)agg->bitmap); | |
1991 | ||
1992 | if (bitmap) | |
1993 | agg->wait_for_ba = 1; | |
1994 | } | |
1995 | return 0; | |
1996 | } | |
f20217d9 | 1997 | |
c1182743 JB |
1998 | static u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr) |
1999 | { | |
2000 | int i; | |
2001 | int start = 0; | |
2002 | int ret = IWL_INVALID_STATION; | |
2003 | unsigned long flags; | |
2004 | ||
2005 | if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) || | |
2006 | (priv->iw_mode == NL80211_IFTYPE_AP)) | |
2007 | start = IWL_STA_ID; | |
2008 | ||
2009 | if (is_broadcast_ether_addr(addr)) | |
2010 | return priv->hw_params.bcast_sta_id; | |
2011 | ||
2012 | spin_lock_irqsave(&priv->sta_lock, flags); | |
2013 | for (i = start; i < priv->hw_params.max_stations; i++) | |
2014 | if (priv->stations[i].used && | |
2015 | (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
2016 | addr))) { | |
2017 | ret = i; | |
2018 | goto out; | |
2019 | } | |
2020 | ||
2021 | IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n", | |
2022 | addr, priv->num_stations); | |
2023 | ||
2024 | out: | |
2025 | /* | |
2026 | * It may be possible that more commands interacting with stations | |
2027 | * arrive before we completed processing the adding of | |
2028 | * station | |
2029 | */ | |
2030 | if (ret != IWL_INVALID_STATION && | |
2031 | (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) || | |
2032 | ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) && | |
2033 | (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) { | |
2034 | IWL_ERR(priv, "Requested station info for sta %d before ready.\n", | |
2035 | ret); | |
2036 | ret = IWL_INVALID_STATION; | |
2037 | } | |
2038 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
2039 | return ret; | |
2040 | } | |
2041 | ||
93286db5 JB |
2042 | static int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) |
2043 | { | |
2044 | if (priv->iw_mode == NL80211_IFTYPE_STATION) { | |
2045 | return IWL_AP_ID; | |
2046 | } else { | |
2047 | u8 *da = ieee80211_get_DA(hdr); | |
2048 | return iwl_find_station(priv, da); | |
2049 | } | |
2050 | } | |
2051 | ||
f20217d9 TW |
2052 | /** |
2053 | * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response | |
2054 | */ | |
2055 | static void iwl4965_rx_reply_tx(struct iwl_priv *priv, | |
2056 | struct iwl_rx_mem_buffer *rxb) | |
2057 | { | |
2f301227 | 2058 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
f20217d9 TW |
2059 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); |
2060 | int txq_id = SEQ_TO_QUEUE(sequence); | |
2061 | int index = SEQ_TO_INDEX(sequence); | |
2062 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; | |
3fd07a1e | 2063 | struct ieee80211_hdr *hdr; |
f20217d9 TW |
2064 | struct ieee80211_tx_info *info; |
2065 | struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; | |
25a6572c | 2066 | u32 status = le32_to_cpu(tx_resp->u.status); |
39825f4d | 2067 | int uninitialized_var(tid); |
3fd07a1e TW |
2068 | int sta_id; |
2069 | int freed; | |
f20217d9 | 2070 | u8 *qc = NULL; |
9c5ac091 | 2071 | unsigned long flags; |
f20217d9 TW |
2072 | |
2073 | if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { | |
15b1687c | 2074 | IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " |
f20217d9 TW |
2075 | "is out of range [0-%d] %d %d\n", txq_id, |
2076 | index, txq->q.n_bd, txq->q.write_ptr, | |
2077 | txq->q.read_ptr); | |
2078 | return; | |
2079 | } | |
2080 | ||
ff0d91c3 | 2081 | info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb); |
f20217d9 TW |
2082 | memset(&info->status, 0, sizeof(info->status)); |
2083 | ||
f20217d9 | 2084 | hdr = iwl_tx_queue_get_hdr(priv, txq_id, index); |
3fd07a1e | 2085 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
fd7c8a40 | 2086 | qc = ieee80211_get_qos_ctl(hdr); |
f20217d9 TW |
2087 | tid = qc[0] & 0xf; |
2088 | } | |
2089 | ||
2090 | sta_id = iwl_get_ra_sta_id(priv, hdr); | |
2091 | if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) { | |
15b1687c | 2092 | IWL_ERR(priv, "Station not known\n"); |
f20217d9 TW |
2093 | return; |
2094 | } | |
2095 | ||
9c5ac091 | 2096 | spin_lock_irqsave(&priv->sta_lock, flags); |
f20217d9 TW |
2097 | if (txq->sched_retry) { |
2098 | const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp); | |
2099 | struct iwl_ht_agg *agg = NULL; | |
3fd07a1e | 2100 | WARN_ON(!qc); |
f20217d9 TW |
2101 | |
2102 | agg = &priv->stations[sta_id].tid[tid].agg; | |
2103 | ||
25a6572c | 2104 | iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); |
f20217d9 | 2105 | |
3235427e RR |
2106 | /* check if BAR is needed */ |
2107 | if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) | |
2108 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
f20217d9 TW |
2109 | |
2110 | if (txq->q.read_ptr != (scd_ssn & 0xff)) { | |
f20217d9 | 2111 | index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); |
e1623446 | 2112 | IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim scd_ssn " |
f20217d9 | 2113 | "%d index %d\n", scd_ssn , index); |
74bcdb33 | 2114 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
ece6444c WYG |
2115 | if (qc) |
2116 | iwl_free_tfds_in_queue(priv, sta_id, | |
2117 | tid, freed); | |
f20217d9 | 2118 | |
3fd07a1e TW |
2119 | if (priv->mac80211_registered && |
2120 | (iwl_queue_space(&txq->q) > txq->q.low_mark) && | |
2121 | (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) { | |
f20217d9 | 2122 | if (agg->state == IWL_AGG_OFF) |
e4e72fb4 | 2123 | iwl_wake_queue(priv, txq_id); |
f20217d9 | 2124 | else |
e4e72fb4 | 2125 | iwl_wake_queue(priv, txq->swq_id); |
f20217d9 | 2126 | } |
f20217d9 TW |
2127 | } |
2128 | } else { | |
e6a9854b | 2129 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
c397bf15 | 2130 | info->flags |= iwl_tx_status_to_mac80211(status); |
8d801080 | 2131 | iwlagn_hwrate_to_tx_control(priv, |
4f85f5b3 RR |
2132 | le32_to_cpu(tx_resp->rate_n_flags), |
2133 | info); | |
2134 | ||
e1623446 | 2135 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) " |
3fd07a1e TW |
2136 | "rate_n_flags 0x%x retries %d\n", |
2137 | txq_id, | |
2138 | iwl_get_tx_fail_reason(status), status, | |
2139 | le32_to_cpu(tx_resp->rate_n_flags), | |
2140 | tx_resp->failure_frame); | |
e7d326ac | 2141 | |
74bcdb33 | 2142 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
ece6444c WYG |
2143 | if (qc && likely(sta_id != IWL_INVALID_STATION)) |
2144 | iwl_free_tfds_in_queue(priv, sta_id, tid, freed); | |
2145 | else if (sta_id == IWL_INVALID_STATION) | |
2146 | IWL_DEBUG_TX_REPLY(priv, "Station not known\n"); | |
3fd07a1e TW |
2147 | |
2148 | if (priv->mac80211_registered && | |
2149 | (iwl_queue_space(&txq->q) > txq->q.low_mark)) | |
e4e72fb4 | 2150 | iwl_wake_queue(priv, txq_id); |
f20217d9 | 2151 | } |
ece6444c | 2152 | if (qc && likely(sta_id != IWL_INVALID_STATION)) |
1805a34f | 2153 | iwlagn_txq_check_empty(priv, sta_id, tid, txq_id); |
3fd07a1e | 2154 | |
04569cbe | 2155 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
9c5ac091 RC |
2156 | |
2157 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
f20217d9 TW |
2158 | } |
2159 | ||
caab8f1a TW |
2160 | static int iwl4965_calc_rssi(struct iwl_priv *priv, |
2161 | struct iwl_rx_phy_res *rx_resp) | |
2162 | { | |
2163 | /* data from PHY/DSP regarding signal strength, etc., | |
2164 | * contents are always there, not configurable by host. */ | |
2165 | struct iwl4965_rx_non_cfg_phy *ncphy = | |
2166 | (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf; | |
2167 | u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK) | |
2168 | >> IWL49_AGC_DB_POS; | |
2169 | ||
2170 | u32 valid_antennae = | |
2171 | (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK) | |
2172 | >> IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET; | |
2173 | u8 max_rssi = 0; | |
2174 | u32 i; | |
2175 | ||
2176 | /* Find max rssi among 3 possible receivers. | |
2177 | * These values are measured by the digital signal processor (DSP). | |
2178 | * They should stay fairly constant even as the signal strength varies, | |
2179 | * if the radio's automatic gain control (AGC) is working right. | |
2180 | * AGC value (see below) will provide the "interesting" info. */ | |
2181 | for (i = 0; i < 3; i++) | |
2182 | if (valid_antennae & (1 << i)) | |
2183 | max_rssi = max(ncphy->rssi_info[i << 1], max_rssi); | |
2184 | ||
e1623446 | 2185 | IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", |
caab8f1a TW |
2186 | ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4], |
2187 | max_rssi, agc); | |
2188 | ||
2189 | /* dBm = max_rssi dB - agc dB - constant. | |
2190 | * Higher AGC (higher radio gain) means lower signal. */ | |
b744cb79 | 2191 | return max_rssi - agc - IWLAGN_RSSI_OFFSET; |
caab8f1a TW |
2192 | } |
2193 | ||
f20217d9 | 2194 | |
b481de9c | 2195 | /* Set up 4965-specific Rx frame reply handlers */ |
d4789efe | 2196 | static void iwl4965_rx_handler_setup(struct iwl_priv *priv) |
b481de9c ZY |
2197 | { |
2198 | /* Legacy Rx frames */ | |
8d801080 | 2199 | priv->rx_handlers[REPLY_RX] = iwlagn_rx_reply_rx; |
37a44211 | 2200 | /* Tx response */ |
f20217d9 | 2201 | priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx; |
b481de9c ZY |
2202 | } |
2203 | ||
4e39317d | 2204 | static void iwl4965_setup_deferred_work(struct iwl_priv *priv) |
b481de9c ZY |
2205 | { |
2206 | INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); | |
b481de9c ZY |
2207 | } |
2208 | ||
4e39317d | 2209 | static void iwl4965_cancel_deferred_work(struct iwl_priv *priv) |
b481de9c | 2210 | { |
4e39317d | 2211 | cancel_work_sync(&priv->txpower_work); |
b481de9c ZY |
2212 | } |
2213 | ||
3c424c28 | 2214 | static struct iwl_hcmd_ops iwl4965_hcmd = { |
7e8c519e | 2215 | .rxon_assoc = iwl4965_send_rxon_assoc, |
e0158e61 | 2216 | .commit_rxon = iwl_commit_rxon, |
45823531 | 2217 | .set_rxon_chain = iwl_set_rxon_chain, |
65b52bde | 2218 | .send_bt_config = iwl_send_bt_config, |
3c424c28 TW |
2219 | }; |
2220 | ||
857485c0 | 2221 | static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = { |
c1adf9fb | 2222 | .get_hcmd_size = iwl4965_get_hcmd_size, |
133636de | 2223 | .build_addsta_hcmd = iwl4965_build_addsta_hcmd, |
f0832f13 EG |
2224 | .chain_noise_reset = iwl4965_chain_noise_reset, |
2225 | .gain_computation = iwl4965_gain_computation, | |
94597ab2 | 2226 | .tx_cmd_protection = iwlcore_tx_cmd_protection, |
caab8f1a | 2227 | .calc_rssi = iwl4965_calc_rssi, |
b6e4c55a | 2228 | .request_scan = iwlagn_request_scan, |
857485c0 TW |
2229 | }; |
2230 | ||
6bc913bd | 2231 | static struct iwl_lib_ops iwl4965_lib = { |
5425e490 | 2232 | .set_hw_params = iwl4965_hw_set_hw_params, |
e2a722eb | 2233 | .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl, |
da1bc453 | 2234 | .txq_set_sched = iwl4965_txq_set_sched, |
30e553e3 TW |
2235 | .txq_agg_enable = iwl4965_txq_agg_enable, |
2236 | .txq_agg_disable = iwl4965_txq_agg_disable, | |
7aaa1d79 SO |
2237 | .txq_attach_buf_to_tfd = iwl_hw_txq_attach_buf_to_tfd, |
2238 | .txq_free_tfd = iwl_hw_txq_free_tfd, | |
a8e74e27 | 2239 | .txq_init = iwl_hw_tx_queue_init, |
d4789efe | 2240 | .rx_handler_setup = iwl4965_rx_handler_setup, |
4e39317d EG |
2241 | .setup_deferred_work = iwl4965_setup_deferred_work, |
2242 | .cancel_deferred_work = iwl4965_cancel_deferred_work, | |
57aab75a TW |
2243 | .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr, |
2244 | .alive_notify = iwl4965_alive_notify, | |
f3ccc08c | 2245 | .init_alive_start = iwl4965_init_alive_start, |
57aab75a | 2246 | .load_ucode = iwl4965_load_bsm, |
b7a79404 RC |
2247 | .dump_nic_event_log = iwl_dump_nic_event_log, |
2248 | .dump_nic_error_log = iwl_dump_nic_error_log, | |
647291f5 | 2249 | .dump_fh = iwl_dump_fh, |
4a56e965 | 2250 | .set_channel_switch = iwl4965_hw_channel_switch, |
6f4083aa | 2251 | .apm_ops = { |
fadb3582 | 2252 | .init = iwl_apm_init, |
d68b603c | 2253 | .stop = iwl_apm_stop, |
694cc56d | 2254 | .config = iwl4965_nic_config, |
5b9f8cd3 | 2255 | .set_pwr_src = iwl_set_pwr_src, |
6f4083aa | 2256 | }, |
6bc913bd | 2257 | .eeprom_ops = { |
073d3f5f TW |
2258 | .regulatory_bands = { |
2259 | EEPROM_REGULATORY_BAND_1_CHANNELS, | |
2260 | EEPROM_REGULATORY_BAND_2_CHANNELS, | |
2261 | EEPROM_REGULATORY_BAND_3_CHANNELS, | |
2262 | EEPROM_REGULATORY_BAND_4_CHANNELS, | |
2263 | EEPROM_REGULATORY_BAND_5_CHANNELS, | |
7aafef1c WYG |
2264 | EEPROM_4965_REGULATORY_BAND_24_HT40_CHANNELS, |
2265 | EEPROM_4965_REGULATORY_BAND_52_HT40_CHANNELS | |
073d3f5f | 2266 | }, |
6bc913bd AK |
2267 | .verify_signature = iwlcore_eeprom_verify_signature, |
2268 | .acquire_semaphore = iwlcore_eeprom_acquire_semaphore, | |
2269 | .release_semaphore = iwlcore_eeprom_release_semaphore, | |
0ef2ca67 | 2270 | .calib_version = iwl4965_eeprom_calib_version, |
073d3f5f | 2271 | .query_addr = iwlcore_eeprom_query_addr, |
6bc913bd | 2272 | }, |
630fe9b6 | 2273 | .send_tx_power = iwl4965_send_tx_power, |
5b9f8cd3 | 2274 | .update_chain_flags = iwl_update_chain_flags, |
5bbe233b | 2275 | .post_associate = iwl_post_associate, |
60690a6a | 2276 | .config_ap = iwl_config_ap, |
ef850d7c | 2277 | .isr = iwl_isr_legacy, |
62161aef WYG |
2278 | .temp_ops = { |
2279 | .temperature = iwl4965_temperature_calib, | |
2280 | .set_ct_kill = iwl4965_set_ct_threshold, | |
2281 | }, | |
1fa61b2e | 2282 | .manage_ibss_station = iwlagn_manage_ibss_station, |
278c2f6f | 2283 | .update_bcast_station = iwl_update_bcast_station, |
b8c76267 AK |
2284 | .debugfs_ops = { |
2285 | .rx_stats_read = iwl_ucode_rx_stats_read, | |
2286 | .tx_stats_read = iwl_ucode_tx_stats_read, | |
2287 | .general_stats_read = iwl_ucode_general_stats_read, | |
ffb7d896 | 2288 | .bt_stats_read = iwl_ucode_bt_stats_read, |
b8c76267 | 2289 | }, |
b807b8a1 | 2290 | .recover_from_tx_stall = iwl_bg_monitor_recover, |
fa8f130c | 2291 | .check_plcp_health = iwl_good_plcp_health, |
6bc913bd AK |
2292 | }; |
2293 | ||
45d5d805 | 2294 | static const struct iwl_ops iwl4965_ops = { |
6bc913bd | 2295 | .lib = &iwl4965_lib, |
3c424c28 | 2296 | .hcmd = &iwl4965_hcmd, |
857485c0 | 2297 | .utils = &iwl4965_hcmd_utils, |
e932a609 | 2298 | .led = &iwlagn_led_ops, |
6bc913bd AK |
2299 | }; |
2300 | ||
fed9017e | 2301 | struct iwl_cfg iwl4965_agn_cfg = { |
c11362c0 | 2302 | .name = "Intel(R) Wireless WiFi Link 4965AGN", |
a0987a8d RC |
2303 | .fw_name_pre = IWL4965_FW_PRE, |
2304 | .ucode_api_max = IWL4965_UCODE_API_MAX, | |
2305 | .ucode_api_min = IWL4965_UCODE_API_MIN, | |
82b9a121 | 2306 | .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N, |
073d3f5f | 2307 | .eeprom_size = IWL4965_EEPROM_IMG_SIZE, |
0ef2ca67 TW |
2308 | .eeprom_ver = EEPROM_4965_EEPROM_VERSION, |
2309 | .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION, | |
6bc913bd | 2310 | .ops = &iwl4965_ops, |
88804e2b WYG |
2311 | .num_of_queues = IWL49_NUM_QUEUES, |
2312 | .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES, | |
2b068618 | 2313 | .mod_params = &iwlagn_mod_params, |
52aa081c | 2314 | .valid_tx_ant = ANT_AB, |
b23aa883 | 2315 | .valid_rx_ant = ANT_ABC, |
fadb3582 BC |
2316 | .pll_cfg_val = 0, |
2317 | .set_l0s = true, | |
2318 | .use_bsm = true, | |
b261793d DH |
2319 | .use_isr_legacy = true, |
2320 | .ht_greenfield_support = false, | |
96d8c6af | 2321 | .broken_powersave = true, |
f2d0d0e2 | 2322 | .led_compensation = 61, |
d8c07e7a | 2323 | .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS, |
3e4fb5fa | 2324 | .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_DEF, |
ce60659a | 2325 | .monitor_recover_period = IWL_DEF_MONITORING_PERIOD, |
2f3f7f9c | 2326 | .temperature_kelvin = true, |
678b385d | 2327 | .max_event_log_size = 512, |
4e7033ef | 2328 | .tx_power_by_driver = true, |
6e5c800e | 2329 | .ucode_tracing = true, |
65d1f896 WYG |
2330 | .sensitivity_calib_by_driver = true, |
2331 | .chain_noise_calib_by_driver = true, | |
e7cb4955 JB |
2332 | /* |
2333 | * Force use of chains B and C for scan RX on 5 GHz band | |
2334 | * because the device has off-channel reception on chain A. | |
2335 | */ | |
0e1654fa | 2336 | .scan_rx_antennas[IEEE80211_BAND_5GHZ] = ANT_BC, |
82b9a121 TW |
2337 | }; |
2338 | ||
d16dc48a | 2339 | /* Module firmware */ |
a0987a8d | 2340 | MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX)); |
d16dc48a | 2341 |