1 | /****************************************************************************** |
2 | * |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or |
4 | * redistributing this file, you may do so under either license. |
5 | * |
6 | * GPL LICENSE SUMMARY |
7 | * |
8 | * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of version 2 of the GNU General Public License as |
12 | * published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, but |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | * General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
22 | * USA |
23 | * |
24 | * The full GNU General Public License is included in this distribution |
25 | * in the file called LICENSE.GPL. |
26 | * |
27 | * Contact Information: |
28 | * Intel Linux Wireless <ilw@linux.intel.com> |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
30 | * |
31 | * BSD LICENSE |
32 | * |
33 | * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. |
34 | * All rights reserved. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * |
40 | * * Redistributions of source code must retain the above copyright |
41 | * notice, this list of conditions and the following disclaimer. |
42 | * * Redistributions in binary form must reproduce the above copyright |
43 | * notice, this list of conditions and the following disclaimer in |
44 | * the documentation and/or other materials provided with the |
45 | * distribution. |
46 | * * Neither the name Intel Corporation nor the names of its |
47 | * contributors may be used to endorse or promote products derived |
48 | * from this software without specific prior written permission. |
49 | * |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
61 | * |
62 | *****************************************************************************/ |
63 | |
64 | #ifndef __il_commands_h__ |
65 | #define __il_commands_h__ |
66 | |
67 | #include <linux/ieee80211.h> |
68 | |
69 | struct il_priv; |
70 | |
71 | /* uCode version contains 4 values: Major/Minor/API/Serial */ |
72 | #define IL_UCODE_MAJOR(ver) (((ver) & 0xFF000000) >> 24) |
73 | #define IL_UCODE_MINOR(ver) (((ver) & 0x00FF0000) >> 16) |
74 | #define IL_UCODE_API(ver) (((ver) & 0x0000FF00) >> 8) |
75 | #define IL_UCODE_SERIAL(ver) ((ver) & 0x000000FF) |
76 | |
77 | /* Tx rates */ |
78 | #define IL_CCK_RATES 4 |
79 | #define IL_OFDM_RATES 8 |
80 | #define IL_MAX_RATES (IL_CCK_RATES + IL_OFDM_RATES) |
81 | |
82 | enum { |
83 | N_ALIVE = 0x1, |
84 | N_ERROR = 0x2, |
85 | |
86 | /* RXON and QOS commands */ |
87 | C_RXON = 0x10, |
88 | C_RXON_ASSOC = 0x11, |
89 | C_QOS_PARAM = 0x13, |
90 | C_RXON_TIMING = 0x14, |
91 | |
92 | /* Multi-Station support */ |
93 | C_ADD_STA = 0x18, |
94 | C_REM_STA = 0x19, |
95 | |
96 | /* Security */ |
97 | C_WEPKEY = 0x20, |
98 | |
99 | /* RX, TX, LEDs */ |
100 | N_3945_RX = 0x1b, /* 3945 only */ |
101 | C_TX = 0x1c, |
102 | C_RATE_SCALE = 0x47, /* 3945 only */ |
103 | C_LEDS = 0x48, |
104 | C_TX_LINK_QUALITY_CMD = 0x4e, /* for 4965 */ |
105 | |
106 | /* 802.11h related */ |
107 | C_CHANNEL_SWITCH = 0x72, |
108 | N_CHANNEL_SWITCH = 0x73, |
109 | C_SPECTRUM_MEASUREMENT = 0x74, |
110 | N_SPECTRUM_MEASUREMENT = 0x75, |
111 | |
112 | /* Power Management */ |
113 | C_POWER_TBL = 0x77, |
114 | N_PM_SLEEP = 0x7A, |
115 | N_PM_DEBUG_STATS = 0x7B, |
116 | |
117 | /* Scan commands and notifications */ |
118 | C_SCAN = 0x80, |
119 | C_SCAN_ABORT = 0x81, |
120 | N_SCAN_START = 0x82, |
121 | N_SCAN_RESULTS = 0x83, |
122 | N_SCAN_COMPLETE = 0x84, |
123 | |
124 | /* IBSS/AP commands */ |
125 | N_BEACON = 0x90, |
126 | C_TX_BEACON = 0x91, |
127 | |
128 | /* Miscellaneous commands */ |
129 | C_TX_PWR_TBL = 0x97, |
130 | |
131 | /* Bluetooth device coexistence config command */ |
132 | C_BT_CONFIG = 0x9b, |
133 | |
134 | /* Statistics */ |
135 | C_STATS = 0x9c, |
136 | N_STATS = 0x9d, |
137 | |
138 | /* RF-KILL commands and notifications */ |
139 | N_CARD_STATE = 0xa1, |
140 | |
141 | /* Missed beacons notification */ |
142 | N_MISSED_BEACONS = 0xa2, |
143 | |
144 | C_CT_KILL_CONFIG = 0xa4, |
145 | C_SENSITIVITY = 0xa8, |
146 | C_PHY_CALIBRATION = 0xb0, |
147 | N_RX_PHY = 0xc0, |
148 | N_RX_MPDU = 0xc1, |
149 | N_RX = 0xc3, |
150 | N_COMPRESSED_BA = 0xc5, |
151 | |
152 | IL_CN_MAX = 0xff |
153 | }; |
154 | |
155 | /****************************************************************************** |
156 | * (0) |
157 | * Commonly used structures and definitions: |
158 | * Command header, rate_n_flags, txpower |
159 | * |
160 | *****************************************************************************/ |
161 | |
162 | /* il_cmd_header flags value */ |
163 | #define IL_CMD_FAILED_MSK 0x40 |
164 | |
165 | #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f) |
166 | #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8) |
167 | #define SEQ_TO_IDX(s) ((s) & 0xff) |
168 | #define IDX_TO_SEQ(i) ((i) & 0xff) |
169 | #define SEQ_HUGE_FRAME cpu_to_le16(0x4000) |
170 | #define SEQ_RX_FRAME cpu_to_le16(0x8000) |
171 | |
172 | /** |
173 | * struct il_cmd_header |
174 | * |
175 | * This header format appears in the beginning of each command sent from the |
176 | * driver, and each response/notification received from uCode. |
177 | */ |
178 | struct { |
179 | u8 ; /* Command ID: C_RXON, etc. */ |
180 | u8 ; /* 0:5 reserved, 6 abort, 7 internal */ |
181 | /* |
182 | * The driver sets up the sequence number to values of its choosing. |
183 | * uCode does not use this value, but passes it back to the driver |
184 | * when sending the response to each driver-originated command, so |
185 | * the driver can match the response to the command. Since the values |
186 | * don't get used by uCode, the driver may set up an arbitrary format. |
187 | * |
188 | * There is one exception: uCode sets bit 15 when it originates |
189 | * the response/notification, i.e. when the response/notification |
190 | * is not a direct response to a command sent by the driver. For |
191 | * example, uCode issues N_3945_RX when it sends a received frame |
192 | * to the driver; it is not a direct response to any driver command. |
193 | * |
194 | * The Linux driver uses the following format: |
195 | * |
196 | * 0:7 tfd idx - position within TX queue |
197 | * 8:12 TX queue id |
198 | * 13 reserved |
199 | * 14 huge - driver sets this to indicate command is in the |
200 | * 'huge' storage at the end of the command buffers |
201 | * 15 unsolicited RX or uCode-originated notification |
202 | */ |
203 | __le16 ; |
204 | |
205 | /* command or response/notification data follows immediately */ |
206 | u8 []; |
207 | } __packed; |
208 | |
209 | /** |
210 | * struct il3945_tx_power |
211 | * |
212 | * Used in C_TX_PWR_TBL, C_SCAN, C_CHANNEL_SWITCH |
213 | * |
214 | * Each entry contains two values: |
215 | * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained |
216 | * linear value that multiplies the output of the digital signal processor, |
217 | * before being sent to the analog radio. |
218 | * 2) Radio gain. This sets the analog gain of the radio Tx path. |
219 | * It is a coarser setting, and behaves in a logarithmic (dB) fashion. |
220 | * |
221 | * Driver obtains values from struct il3945_tx_power power_gain_table[][]. |
222 | */ |
223 | struct il3945_tx_power { |
224 | u8 tx_gain; /* gain for analog radio */ |
225 | u8 dsp_atten; /* gain for DSP */ |
226 | } __packed; |
227 | |
228 | /** |
229 | * struct il3945_power_per_rate |
230 | * |
231 | * Used in C_TX_PWR_TBL, C_CHANNEL_SWITCH |
232 | */ |
233 | struct il3945_power_per_rate { |
234 | u8 rate; /* plcp */ |
235 | struct il3945_tx_power tpc; |
236 | u8 reserved; |
237 | } __packed; |
238 | |
239 | /** |
240 | * iwl4965 rate_n_flags bit fields |
241 | * |
242 | * rate_n_flags format is used in following iwl4965 commands: |
243 | * N_RX (response only) |
244 | * N_RX_MPDU (response only) |
245 | * C_TX (both command and response) |
246 | * C_TX_LINK_QUALITY_CMD |
247 | * |
248 | * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"): |
249 | * 2-0: 0) 6 Mbps |
250 | * 1) 12 Mbps |
251 | * 2) 18 Mbps |
252 | * 3) 24 Mbps |
253 | * 4) 36 Mbps |
254 | * 5) 48 Mbps |
255 | * 6) 54 Mbps |
256 | * 7) 60 Mbps |
257 | * |
258 | * 4-3: 0) Single stream (SISO) |
259 | * 1) Dual stream (MIMO) |
260 | * 2) Triple stream (MIMO) |
261 | * |
262 | * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps HT40 duplicate data |
263 | * |
264 | * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"): |
265 | * 3-0: 0xD) 6 Mbps |
266 | * 0xF) 9 Mbps |
267 | * 0x5) 12 Mbps |
268 | * 0x7) 18 Mbps |
269 | * 0x9) 24 Mbps |
270 | * 0xB) 36 Mbps |
271 | * 0x1) 48 Mbps |
272 | * 0x3) 54 Mbps |
273 | * |
274 | * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"): |
275 | * 6-0: 10) 1 Mbps |
276 | * 20) 2 Mbps |
277 | * 55) 5.5 Mbps |
278 | * 110) 11 Mbps |
279 | */ |
280 | #define RATE_MCS_CODE_MSK 0x7 |
281 | #define RATE_MCS_SPATIAL_POS 3 |
282 | #define RATE_MCS_SPATIAL_MSK 0x18 |
283 | #define RATE_MCS_HT_DUP_POS 5 |
284 | #define RATE_MCS_HT_DUP_MSK 0x20 |
285 | |
286 | /* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */ |
287 | #define RATE_MCS_FLAGS_POS 8 |
288 | #define RATE_MCS_HT_POS 8 |
289 | #define RATE_MCS_HT_MSK 0x100 |
290 | |
291 | /* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */ |
292 | #define RATE_MCS_CCK_POS 9 |
293 | #define RATE_MCS_CCK_MSK 0x200 |
294 | |
295 | /* Bit 10: (1) Use Green Field preamble */ |
296 | #define RATE_MCS_GF_POS 10 |
297 | #define RATE_MCS_GF_MSK 0x400 |
298 | |
299 | /* Bit 11: (1) Use 40Mhz HT40 chnl width, (0) use 20 MHz legacy chnl width */ |
300 | #define RATE_MCS_HT40_POS 11 |
301 | #define RATE_MCS_HT40_MSK 0x800 |
302 | |
303 | /* Bit 12: (1) Duplicate data on both 20MHz chnls. HT40 (bit 11) must be set. */ |
304 | #define RATE_MCS_DUP_POS 12 |
305 | #define RATE_MCS_DUP_MSK 0x1000 |
306 | |
307 | /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */ |
308 | #define RATE_MCS_SGI_POS 13 |
309 | #define RATE_MCS_SGI_MSK 0x2000 |
310 | |
311 | /** |
312 | * rate_n_flags Tx antenna masks |
313 | * 4965 has 2 transmitters |
314 | * bit14:16 |
315 | */ |
316 | #define RATE_MCS_ANT_POS 14 |
317 | #define RATE_MCS_ANT_A_MSK 0x04000 |
318 | #define RATE_MCS_ANT_B_MSK 0x08000 |
319 | #define RATE_MCS_ANT_C_MSK 0x10000 |
320 | #define RATE_MCS_ANT_AB_MSK (RATE_MCS_ANT_A_MSK | RATE_MCS_ANT_B_MSK) |
321 | #define RATE_MCS_ANT_ABC_MSK (RATE_MCS_ANT_AB_MSK | RATE_MCS_ANT_C_MSK) |
322 | #define RATE_ANT_NUM 3 |
323 | |
324 | #define POWER_TBL_NUM_ENTRIES 33 |
325 | #define POWER_TBL_NUM_HT_OFDM_ENTRIES 32 |
326 | #define POWER_TBL_CCK_ENTRY 32 |
327 | |
328 | #define IL_PWR_NUM_HT_OFDM_ENTRIES 24 |
329 | #define IL_PWR_CCK_ENTRIES 2 |
330 | |
331 | /** |
332 | * union il4965_tx_power_dual_stream |
333 | * |
334 | * Host format used for C_TX_PWR_TBL, C_CHANNEL_SWITCH |
335 | * Use __le32 version (struct tx_power_dual_stream) when building command. |
336 | * |
337 | * Driver provides radio gain and DSP attenuation settings to device in pairs, |
338 | * one value for each transmitter chain. The first value is for transmitter A, |
339 | * second for transmitter B. |
340 | * |
341 | * For SISO bit rates, both values in a pair should be identical. |
342 | * For MIMO rates, one value may be different from the other, |
343 | * in order to balance the Tx output between the two transmitters. |
344 | * |
345 | * See more details in doc for TXPOWER in 4965.h. |
346 | */ |
347 | union il4965_tx_power_dual_stream { |
348 | struct { |
349 | u8 radio_tx_gain[2]; |
350 | u8 dsp_predis_atten[2]; |
351 | } s; |
352 | u32 dw; |
353 | }; |
354 | |
355 | /** |
356 | * struct tx_power_dual_stream |
357 | * |
358 | * Table entries in C_TX_PWR_TBL, C_CHANNEL_SWITCH |
359 | * |
360 | * Same format as il_tx_power_dual_stream, but __le32 |
361 | */ |
362 | struct tx_power_dual_stream { |
363 | __le32 dw; |
364 | } __packed; |
365 | |
366 | /** |
367 | * struct il4965_tx_power_db |
368 | * |
369 | * Entire table within C_TX_PWR_TBL, C_CHANNEL_SWITCH |
370 | */ |
371 | struct il4965_tx_power_db { |
372 | struct tx_power_dual_stream power_tbl[POWER_TBL_NUM_ENTRIES]; |
373 | } __packed; |
374 | |
375 | /****************************************************************************** |
376 | * (0a) |
377 | * Alive and Error Commands & Responses: |
378 | * |
379 | *****************************************************************************/ |
380 | |
381 | #define UCODE_VALID_OK cpu_to_le32(0x1) |
382 | #define INITIALIZE_SUBTYPE (9) |
383 | |
384 | /* |
385 | * ("Initialize") N_ALIVE = 0x1 (response only, not a command) |
386 | * |
387 | * uCode issues this "initialize alive" notification once the initialization |
388 | * uCode image has completed its work, and is ready to load the runtime image. |
389 | * This is the *first* "alive" notification that the driver will receive after |
390 | * rebooting uCode; the "initialize" alive is indicated by subtype field == 9. |
391 | * |
392 | * See comments documenting "BSM" (bootstrap state machine). |
393 | * |
394 | * For 4965, this notification contains important calibration data for |
395 | * calculating txpower settings: |
396 | * |
397 | * 1) Power supply voltage indication. The voltage sensor outputs higher |
398 | * values for lower voltage, and vice verse. |
399 | * |
400 | * 2) Temperature measurement parameters, for each of two channel widths |
401 | * (20 MHz and 40 MHz) supported by the radios. Temperature sensing |
402 | * is done via one of the receiver chains, and channel width influences |
403 | * the results. |
404 | * |
405 | * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation, |
406 | * for each of 5 frequency ranges. |
407 | */ |
408 | struct il_init_alive_resp { |
409 | u8 ucode_minor; |
410 | u8 ucode_major; |
411 | __le16 reserved1; |
412 | u8 sw_rev[8]; |
413 | u8 ver_type; |
414 | u8 ver_subtype; /* "9" for initialize alive */ |
415 | __le16 reserved2; |
416 | __le32 log_event_table_ptr; |
417 | __le32 error_event_table_ptr; |
418 | __le32 timestamp; |
419 | __le32 is_valid; |
420 | |
421 | /* calibration values from "initialize" uCode */ |
422 | __le32 voltage; /* signed, higher value is lower voltage */ |
423 | __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for HT40 */ |
424 | __le32 therm_r2[2]; /* signed */ |
425 | __le32 therm_r3[2]; /* signed */ |
426 | __le32 therm_r4[2]; /* signed */ |
427 | __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups, |
428 | * 2 Tx chains */ |
429 | } __packed; |
430 | |
431 | /** |
432 | * N_ALIVE = 0x1 (response only, not a command) |
433 | * |
434 | * uCode issues this "alive" notification once the runtime image is ready |
435 | * to receive commands from the driver. This is the *second* "alive" |
436 | * notification that the driver will receive after rebooting uCode; |
437 | * this "alive" is indicated by subtype field != 9. |
438 | * |
439 | * See comments documenting "BSM" (bootstrap state machine). |
440 | * |
441 | * This response includes two pointers to structures within the device's |
442 | * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging: |
443 | * |
444 | * 1) log_event_table_ptr indicates base of the event log. This traces |
445 | * a 256-entry history of uCode execution within a circular buffer. |
446 | * Its header format is: |
447 | * |
448 | * __le32 log_size; log capacity (in number of entries) |
449 | * __le32 type; (1) timestamp with each entry, (0) no timestamp |
450 | * __le32 wraps; # times uCode has wrapped to top of circular buffer |
451 | * __le32 write_idx; next circular buffer entry that uCode would fill |
452 | * |
453 | * The header is followed by the circular buffer of log entries. Entries |
454 | * with timestamps have the following format: |
455 | * |
456 | * __le32 event_id; range 0 - 1500 |
457 | * __le32 timestamp; low 32 bits of TSF (of network, if associated) |
458 | * __le32 data; event_id-specific data value |
459 | * |
460 | * Entries without timestamps contain only event_id and data. |
461 | * |
462 | * |
463 | * 2) error_event_table_ptr indicates base of the error log. This contains |
464 | * information about any uCode error that occurs. For 4965, the format |
465 | * of the error log is: |
466 | * |
467 | * __le32 valid; (nonzero) valid, (0) log is empty |
468 | * __le32 error_id; type of error |
469 | * __le32 pc; program counter |
470 | * __le32 blink1; branch link |
471 | * __le32 blink2; branch link |
472 | * __le32 ilink1; interrupt link |
473 | * __le32 ilink2; interrupt link |
474 | * __le32 data1; error-specific data |
475 | * __le32 data2; error-specific data |
476 | * __le32 line; source code line of error |
477 | * __le32 bcon_time; beacon timer |
478 | * __le32 tsf_low; network timestamp function timer |
479 | * __le32 tsf_hi; network timestamp function timer |
480 | * __le32 gp1; GP1 timer register |
481 | * __le32 gp2; GP2 timer register |
482 | * __le32 gp3; GP3 timer register |
483 | * __le32 ucode_ver; uCode version |
484 | * __le32 hw_ver; HW Silicon version |
485 | * __le32 brd_ver; HW board version |
486 | * __le32 log_pc; log program counter |
487 | * __le32 frame_ptr; frame pointer |
488 | * __le32 stack_ptr; stack pointer |
489 | * __le32 hcmd; last host command |
490 | * __le32 isr0; isr status register LMPM_NIC_ISR0: rxtx_flag |
491 | * __le32 isr1; isr status register LMPM_NIC_ISR1: host_flag |
492 | * __le32 isr2; isr status register LMPM_NIC_ISR2: enc_flag |
493 | * __le32 isr3; isr status register LMPM_NIC_ISR3: time_flag |
494 | * __le32 isr4; isr status register LMPM_NIC_ISR4: wico interrupt |
495 | * __le32 isr_pref; isr status register LMPM_NIC_PREF_STAT |
496 | * __le32 wait_event; wait event() caller address |
497 | * __le32 l2p_control; L2pControlField |
498 | * __le32 l2p_duration; L2pDurationField |
499 | * __le32 l2p_mhvalid; L2pMhValidBits |
500 | * __le32 l2p_addr_match; L2pAddrMatchStat |
501 | * __le32 lmpm_pmg_sel; indicate which clocks are turned on (LMPM_PMG_SEL) |
502 | * __le32 u_timestamp; indicate when the date and time of the compilation |
503 | * __le32 reserved; |
504 | * |
505 | * The Linux driver can print both logs to the system log when a uCode error |
506 | * occurs. |
507 | */ |
508 | struct il_alive_resp { |
509 | u8 ucode_minor; |
510 | u8 ucode_major; |
511 | __le16 reserved1; |
512 | u8 sw_rev[8]; |
513 | u8 ver_type; |
514 | u8 ver_subtype; /* not "9" for runtime alive */ |
515 | __le16 reserved2; |
516 | __le32 log_event_table_ptr; /* SRAM address for event log */ |
517 | __le32 error_event_table_ptr; /* SRAM address for error log */ |
518 | __le32 timestamp; |
519 | __le32 is_valid; |
520 | } __packed; |
521 | |
522 | /* |
523 | * N_ERROR = 0x2 (response only, not a command) |
524 | */ |
525 | struct il_error_resp { |
526 | __le32 error_type; |
527 | u8 cmd_id; |
528 | u8 reserved1; |
529 | __le16 bad_cmd_seq_num; |
530 | __le32 error_info; |
531 | __le64 timestamp; |
532 | } __packed; |
533 | |
534 | /****************************************************************************** |
535 | * (1) |
536 | * RXON Commands & Responses: |
537 | * |
538 | *****************************************************************************/ |
539 | |
540 | /* |
541 | * Rx config defines & structure |
542 | */ |
543 | /* rx_config device types */ |
544 | enum { |
545 | RXON_DEV_TYPE_AP = 1, |
546 | RXON_DEV_TYPE_ESS = 3, |
547 | RXON_DEV_TYPE_IBSS = 4, |
548 | RXON_DEV_TYPE_SNIFFER = 6, |
549 | }; |
550 | |
551 | #define RXON_RX_CHAIN_DRIVER_FORCE_MSK cpu_to_le16(0x1 << 0) |
552 | #define RXON_RX_CHAIN_DRIVER_FORCE_POS (0) |
553 | #define RXON_RX_CHAIN_VALID_MSK cpu_to_le16(0x7 << 1) |
554 | #define RXON_RX_CHAIN_VALID_POS (1) |
555 | #define RXON_RX_CHAIN_FORCE_SEL_MSK cpu_to_le16(0x7 << 4) |
556 | #define RXON_RX_CHAIN_FORCE_SEL_POS (4) |
557 | #define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK cpu_to_le16(0x7 << 7) |
558 | #define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7) |
559 | #define RXON_RX_CHAIN_CNT_MSK cpu_to_le16(0x3 << 10) |
560 | #define RXON_RX_CHAIN_CNT_POS (10) |
561 | #define RXON_RX_CHAIN_MIMO_CNT_MSK cpu_to_le16(0x3 << 12) |
562 | #define RXON_RX_CHAIN_MIMO_CNT_POS (12) |
563 | #define RXON_RX_CHAIN_MIMO_FORCE_MSK cpu_to_le16(0x1 << 14) |
564 | #define RXON_RX_CHAIN_MIMO_FORCE_POS (14) |
565 | |
566 | /* rx_config flags */ |
567 | /* band & modulation selection */ |
568 | #define RXON_FLG_BAND_24G_MSK cpu_to_le32(1 << 0) |
569 | #define RXON_FLG_CCK_MSK cpu_to_le32(1 << 1) |
570 | /* auto detection enable */ |
571 | #define RXON_FLG_AUTO_DETECT_MSK cpu_to_le32(1 << 2) |
572 | /* TGg protection when tx */ |
573 | #define RXON_FLG_TGG_PROTECT_MSK cpu_to_le32(1 << 3) |
574 | /* cck short slot & preamble */ |
575 | #define RXON_FLG_SHORT_SLOT_MSK cpu_to_le32(1 << 4) |
576 | #define RXON_FLG_SHORT_PREAMBLE_MSK cpu_to_le32(1 << 5) |
577 | /* antenna selection */ |
578 | #define RXON_FLG_DIS_DIV_MSK cpu_to_le32(1 << 7) |
579 | #define RXON_FLG_ANT_SEL_MSK cpu_to_le32(0x0f00) |
580 | #define RXON_FLG_ANT_A_MSK cpu_to_le32(1 << 8) |
581 | #define RXON_FLG_ANT_B_MSK cpu_to_le32(1 << 9) |
582 | /* radar detection enable */ |
583 | #define RXON_FLG_RADAR_DETECT_MSK cpu_to_le32(1 << 12) |
584 | #define RXON_FLG_TGJ_NARROW_BAND_MSK cpu_to_le32(1 << 13) |
585 | /* rx response to host with 8-byte TSF |
586 | * (according to ON_AIR deassertion) */ |
587 | #define RXON_FLG_TSF2HOST_MSK cpu_to_le32(1 << 15) |
588 | |
589 | /* HT flags */ |
590 | #define RXON_FLG_CTRL_CHANNEL_LOC_POS (22) |
591 | #define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK cpu_to_le32(0x1 << 22) |
592 | |
593 | #define RXON_FLG_HT_OPERATING_MODE_POS (23) |
594 | |
595 | #define RXON_FLG_HT_PROT_MSK cpu_to_le32(0x1 << 23) |
596 | #define RXON_FLG_HT40_PROT_MSK cpu_to_le32(0x2 << 23) |
597 | |
598 | #define RXON_FLG_CHANNEL_MODE_POS (25) |
599 | #define RXON_FLG_CHANNEL_MODE_MSK cpu_to_le32(0x3 << 25) |
600 | |
601 | /* channel mode */ |
602 | enum { |
603 | CHANNEL_MODE_LEGACY = 0, |
604 | CHANNEL_MODE_PURE_40 = 1, |
605 | CHANNEL_MODE_MIXED = 2, |
606 | CHANNEL_MODE_RESERVED = 3, |
607 | }; |
608 | #define RXON_FLG_CHANNEL_MODE_LEGACY \ |
609 | cpu_to_le32(CHANNEL_MODE_LEGACY << RXON_FLG_CHANNEL_MODE_POS) |
610 | #define RXON_FLG_CHANNEL_MODE_PURE_40 \ |
611 | cpu_to_le32(CHANNEL_MODE_PURE_40 << RXON_FLG_CHANNEL_MODE_POS) |
612 | #define RXON_FLG_CHANNEL_MODE_MIXED \ |
613 | cpu_to_le32(CHANNEL_MODE_MIXED << RXON_FLG_CHANNEL_MODE_POS) |
614 | |
615 | /* CTS to self (if spec allows) flag */ |
616 | #define RXON_FLG_SELF_CTS_EN cpu_to_le32(0x1<<30) |
617 | |
618 | /* rx_config filter flags */ |
619 | /* accept all data frames */ |
620 | #define RXON_FILTER_PROMISC_MSK cpu_to_le32(1 << 0) |
621 | /* pass control & management to host */ |
622 | #define RXON_FILTER_CTL2HOST_MSK cpu_to_le32(1 << 1) |
623 | /* accept multi-cast */ |
624 | #define RXON_FILTER_ACCEPT_GRP_MSK cpu_to_le32(1 << 2) |
625 | /* don't decrypt uni-cast frames */ |
626 | #define RXON_FILTER_DIS_DECRYPT_MSK cpu_to_le32(1 << 3) |
627 | /* don't decrypt multi-cast frames */ |
628 | #define RXON_FILTER_DIS_GRP_DECRYPT_MSK cpu_to_le32(1 << 4) |
629 | /* STA is associated */ |
630 | #define RXON_FILTER_ASSOC_MSK cpu_to_le32(1 << 5) |
631 | /* transfer to host non bssid beacons in associated state */ |
632 | #define RXON_FILTER_BCON_AWARE_MSK cpu_to_le32(1 << 6) |
633 | |
634 | /** |
635 | * C_RXON = 0x10 (command, has simple generic response) |
636 | * |
637 | * RXON tunes the radio tuner to a service channel, and sets up a number |
638 | * of parameters that are used primarily for Rx, but also for Tx operations. |
639 | * |
640 | * NOTE: When tuning to a new channel, driver must set the |
641 | * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent |
642 | * info within the device, including the station tables, tx retry |
643 | * rate tables, and txpower tables. Driver must build a new station |
644 | * table and txpower table before transmitting anything on the RXON |
645 | * channel. |
646 | * |
647 | * NOTE: All RXONs wipe clean the internal txpower table. Driver must |
648 | * issue a new C_TX_PWR_TBL after each C_RXON (0x10), |
649 | * regardless of whether RXON_FILTER_ASSOC_MSK is set. |
650 | */ |
651 | |
652 | struct il3945_rxon_cmd { |
653 | u8 node_addr[6]; |
654 | __le16 reserved1; |
655 | u8 bssid_addr[6]; |
656 | __le16 reserved2; |
657 | u8 wlap_bssid_addr[6]; |
658 | __le16 reserved3; |
659 | u8 dev_type; |
660 | u8 air_propagation; |
661 | __le16 reserved4; |
662 | u8 ofdm_basic_rates; |
663 | u8 cck_basic_rates; |
664 | __le16 assoc_id; |
665 | __le32 flags; |
666 | __le32 filter_flags; |
667 | __le16 channel; |
668 | __le16 reserved5; |
669 | } __packed; |
670 | |
671 | struct il4965_rxon_cmd { |
672 | u8 node_addr[6]; |
673 | __le16 reserved1; |
674 | u8 bssid_addr[6]; |
675 | __le16 reserved2; |
676 | u8 wlap_bssid_addr[6]; |
677 | __le16 reserved3; |
678 | u8 dev_type; |
679 | u8 air_propagation; |
680 | __le16 rx_chain; |
681 | u8 ofdm_basic_rates; |
682 | u8 cck_basic_rates; |
683 | __le16 assoc_id; |
684 | __le32 flags; |
685 | __le32 filter_flags; |
686 | __le16 channel; |
687 | u8 ofdm_ht_single_stream_basic_rates; |
688 | u8 ofdm_ht_dual_stream_basic_rates; |
689 | } __packed; |
690 | |
691 | /* Create a common rxon cmd which will be typecast into the 3945 or 4965 |
692 | * specific rxon cmd, depending on where it is called from. |
693 | */ |
694 | struct il_rxon_cmd { |
695 | u8 node_addr[6]; |
696 | __le16 reserved1; |
697 | u8 bssid_addr[6]; |
698 | __le16 reserved2; |
699 | u8 wlap_bssid_addr[6]; |
700 | __le16 reserved3; |
701 | u8 dev_type; |
702 | u8 air_propagation; |
703 | __le16 rx_chain; |
704 | u8 ofdm_basic_rates; |
705 | u8 cck_basic_rates; |
706 | __le16 assoc_id; |
707 | __le32 flags; |
708 | __le32 filter_flags; |
709 | __le16 channel; |
710 | u8 ofdm_ht_single_stream_basic_rates; |
711 | u8 ofdm_ht_dual_stream_basic_rates; |
712 | u8 reserved4; |
713 | u8 reserved5; |
714 | } __packed; |
715 | |
716 | /* |
717 | * C_RXON_ASSOC = 0x11 (command, has simple generic response) |
718 | */ |
719 | struct il3945_rxon_assoc_cmd { |
720 | __le32 flags; |
721 | __le32 filter_flags; |
722 | u8 ofdm_basic_rates; |
723 | u8 cck_basic_rates; |
724 | __le16 reserved; |
725 | } __packed; |
726 | |
727 | struct il4965_rxon_assoc_cmd { |
728 | __le32 flags; |
729 | __le32 filter_flags; |
730 | u8 ofdm_basic_rates; |
731 | u8 cck_basic_rates; |
732 | u8 ofdm_ht_single_stream_basic_rates; |
733 | u8 ofdm_ht_dual_stream_basic_rates; |
734 | __le16 rx_chain_select_flags; |
735 | __le16 reserved; |
736 | } __packed; |
737 | |
738 | #define IL_CONN_MAX_LISTEN_INTERVAL 10 |
739 | #define IL_MAX_UCODE_BEACON_INTERVAL 4 /* 4096 */ |
740 | #define IL39_MAX_UCODE_BEACON_INTERVAL 1 /* 1024 */ |
741 | |
742 | /* |
743 | * C_RXON_TIMING = 0x14 (command, has simple generic response) |
744 | */ |
745 | struct il_rxon_time_cmd { |
746 | __le64 timestamp; |
747 | __le16 beacon_interval; |
748 | __le16 atim_win; |
749 | __le32 beacon_init_val; |
750 | __le16 listen_interval; |
751 | u8 dtim_period; |
752 | u8 delta_cp_bss_tbtts; |
753 | } __packed; |
754 | |
755 | /* |
756 | * C_CHANNEL_SWITCH = 0x72 (command, has simple generic response) |
757 | */ |
758 | struct il3945_channel_switch_cmd { |
759 | u8 band; |
760 | u8 expect_beacon; |
761 | __le16 channel; |
762 | __le32 rxon_flags; |
763 | __le32 rxon_filter_flags; |
764 | __le32 switch_time; |
765 | struct il3945_power_per_rate power[IL_MAX_RATES]; |
766 | } __packed; |
767 | |
768 | struct il4965_channel_switch_cmd { |
769 | u8 band; |
770 | u8 expect_beacon; |
771 | __le16 channel; |
772 | __le32 rxon_flags; |
773 | __le32 rxon_filter_flags; |
774 | __le32 switch_time; |
775 | struct il4965_tx_power_db tx_power; |
776 | } __packed; |
777 | |
778 | /* |
779 | * N_CHANNEL_SWITCH = 0x73 (notification only, not a command) |
780 | */ |
781 | struct il_csa_notification { |
782 | __le16 band; |
783 | __le16 channel; |
784 | __le32 status; /* 0 - OK, 1 - fail */ |
785 | } __packed; |
786 | |
787 | /****************************************************************************** |
788 | * (2) |
789 | * Quality-of-Service (QOS) Commands & Responses: |
790 | * |
791 | *****************************************************************************/ |
792 | |
793 | /** |
794 | * struct il_ac_qos -- QOS timing params for C_QOS_PARAM |
795 | * One for each of 4 EDCA access categories in struct il_qosparam_cmd |
796 | * |
797 | * @cw_min: Contention win, start value in numbers of slots. |
798 | * Should be a power-of-2, minus 1. Device's default is 0x0f. |
799 | * @cw_max: Contention win, max value in numbers of slots. |
800 | * Should be a power-of-2, minus 1. Device's default is 0x3f. |
801 | * @aifsn: Number of slots in Arbitration Interframe Space (before |
802 | * performing random backoff timing prior to Tx). Device default 1. |
803 | * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0. |
804 | * |
805 | * Device will automatically increase contention win by (2*CW) + 1 for each |
806 | * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW |
807 | * value, to cap the CW value. |
808 | */ |
809 | struct il_ac_qos { |
810 | __le16 cw_min; |
811 | __le16 cw_max; |
812 | u8 aifsn; |
813 | u8 reserved1; |
814 | __le16 edca_txop; |
815 | } __packed; |
816 | |
817 | /* QoS flags defines */ |
818 | #define QOS_PARAM_FLG_UPDATE_EDCA_MSK cpu_to_le32(0x01) |
819 | #define QOS_PARAM_FLG_TGN_MSK cpu_to_le32(0x02) |
820 | #define QOS_PARAM_FLG_TXOP_TYPE_MSK cpu_to_le32(0x10) |
821 | |
822 | /* Number of Access Categories (AC) (EDCA), queues 0..3 */ |
823 | #define AC_NUM 4 |
824 | |
825 | /* |
826 | * C_QOS_PARAM = 0x13 (command, has simple generic response) |
827 | * |
828 | * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs |
829 | * 0: Background, 1: Best Effort, 2: Video, 3: Voice. |
830 | */ |
831 | struct il_qosparam_cmd { |
832 | __le32 qos_flags; |
833 | struct il_ac_qos ac[AC_NUM]; |
834 | } __packed; |
835 | |
836 | /****************************************************************************** |
837 | * (3) |
838 | * Add/Modify Stations Commands & Responses: |
839 | * |
840 | *****************************************************************************/ |
841 | /* |
842 | * Multi station support |
843 | */ |
844 | |
845 | /* Special, dedicated locations within device's station table */ |
846 | #define IL_AP_ID 0 |
847 | #define IL_STA_ID 2 |
848 | #define IL3945_BROADCAST_ID 24 |
849 | #define IL3945_STATION_COUNT 25 |
850 | #define IL4965_BROADCAST_ID 31 |
851 | #define IL4965_STATION_COUNT 32 |
852 | |
853 | #define IL_STATION_COUNT 32 /* MAX(3945,4965) */ |
854 | #define IL_INVALID_STATION 255 |
855 | |
856 | #define STA_FLG_TX_RATE_MSK cpu_to_le32(1 << 2) |
857 | #define STA_FLG_PWR_SAVE_MSK cpu_to_le32(1 << 8) |
858 | #define STA_FLG_RTS_MIMO_PROT_MSK cpu_to_le32(1 << 17) |
859 | #define STA_FLG_AGG_MPDU_8US_MSK cpu_to_le32(1 << 18) |
860 | #define STA_FLG_MAX_AGG_SIZE_POS (19) |
861 | #define STA_FLG_MAX_AGG_SIZE_MSK cpu_to_le32(3 << 19) |
862 | #define STA_FLG_HT40_EN_MSK cpu_to_le32(1 << 21) |
863 | #define STA_FLG_MIMO_DIS_MSK cpu_to_le32(1 << 22) |
864 | #define STA_FLG_AGG_MPDU_DENSITY_POS (23) |
865 | #define STA_FLG_AGG_MPDU_DENSITY_MSK cpu_to_le32(7 << 23) |
866 | |
867 | /* Use in mode field. 1: modify existing entry, 0: add new station entry */ |
868 | #define STA_CONTROL_MODIFY_MSK 0x01 |
869 | |
870 | /* key flags __le16*/ |
871 | #define STA_KEY_FLG_ENCRYPT_MSK cpu_to_le16(0x0007) |
872 | #define STA_KEY_FLG_NO_ENC cpu_to_le16(0x0000) |
873 | #define STA_KEY_FLG_WEP cpu_to_le16(0x0001) |
874 | #define STA_KEY_FLG_CCMP cpu_to_le16(0x0002) |
875 | #define STA_KEY_FLG_TKIP cpu_to_le16(0x0003) |
876 | |
877 | #define STA_KEY_FLG_KEYID_POS 8 |
878 | #define STA_KEY_FLG_INVALID cpu_to_le16(0x0800) |
879 | /* wep key is either from global key (0) or from station info array (1) */ |
880 | #define STA_KEY_FLG_MAP_KEY_MSK cpu_to_le16(0x0008) |
881 | |
882 | /* wep key in STA: 5-bytes (0) or 13-bytes (1) */ |
883 | #define STA_KEY_FLG_KEY_SIZE_MSK cpu_to_le16(0x1000) |
884 | #define STA_KEY_MULTICAST_MSK cpu_to_le16(0x4000) |
885 | #define STA_KEY_MAX_NUM 8 |
886 | |
887 | /* Flags indicate whether to modify vs. don't change various station params */ |
888 | #define STA_MODIFY_KEY_MASK 0x01 |
889 | #define STA_MODIFY_TID_DISABLE_TX 0x02 |
890 | #define STA_MODIFY_TX_RATE_MSK 0x04 |
891 | #define STA_MODIFY_ADDBA_TID_MSK 0x08 |
892 | #define STA_MODIFY_DELBA_TID_MSK 0x10 |
893 | #define STA_MODIFY_SLEEP_TX_COUNT_MSK 0x20 |
894 | |
895 | /* Receiver address (actually, Rx station's idx into station table), |
896 | * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */ |
897 | #define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid)) |
898 | |
899 | struct il4965_keyinfo { |
900 | __le16 key_flags; |
901 | u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */ |
902 | u8 reserved1; |
903 | __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */ |
904 | u8 key_offset; |
905 | u8 reserved2; |
906 | u8 key[16]; /* 16-byte unicast decryption key */ |
907 | } __packed; |
908 | |
909 | /** |
910 | * struct sta_id_modify |
911 | * @addr[ETH_ALEN]: station's MAC address |
912 | * @sta_id: idx of station in uCode's station table |
913 | * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change |
914 | * |
915 | * Driver selects unused table idx when adding new station, |
916 | * or the idx to a pre-existing station entry when modifying that station. |
917 | * Some idxes have special purposes (IL_AP_ID, idx 0, is for AP). |
918 | * |
919 | * modify_mask flags select which parameters to modify vs. leave alone. |
920 | */ |
921 | struct sta_id_modify { |
922 | u8 addr[ETH_ALEN]; |
923 | __le16 reserved1; |
924 | u8 sta_id; |
925 | u8 modify_mask; |
926 | __le16 reserved2; |
927 | } __packed; |
928 | |
929 | /* |
930 | * C_ADD_STA = 0x18 (command) |
931 | * |
932 | * The device contains an internal table of per-station information, |
933 | * with info on security keys, aggregation parameters, and Tx rates for |
934 | * initial Tx attempt and any retries (4965 devices uses |
935 | * C_TX_LINK_QUALITY_CMD, |
936 | * 3945 uses C_RATE_SCALE to set up rate tables). |
937 | * |
938 | * C_ADD_STA sets up the table entry for one station, either creating |
939 | * a new entry, or modifying a pre-existing one. |
940 | * |
941 | * NOTE: RXON command (without "associated" bit set) wipes the station table |
942 | * clean. Moving into RF_KILL state does this also. Driver must set up |
943 | * new station table before transmitting anything on the RXON channel |
944 | * (except active scans or active measurements; those commands carry |
945 | * their own txpower/rate setup data). |
946 | * |
947 | * When getting started on a new channel, driver must set up the |
948 | * IL_BROADCAST_ID entry (last entry in the table). For a client |
949 | * station in a BSS, once an AP is selected, driver sets up the AP STA |
950 | * in the IL_AP_ID entry (1st entry in the table). BROADCAST and AP |
951 | * are all that are needed for a BSS client station. If the device is |
952 | * used as AP, or in an IBSS network, driver must set up station table |
953 | * entries for all STAs in network, starting with idx IL_STA_ID. |
954 | */ |
955 | |
956 | struct il3945_addsta_cmd { |
957 | u8 mode; /* 1: modify existing, 0: add new station */ |
958 | u8 reserved[3]; |
959 | struct sta_id_modify sta; |
960 | struct il4965_keyinfo key; |
961 | __le32 station_flags; /* STA_FLG_* */ |
962 | __le32 station_flags_msk; /* STA_FLG_* */ |
963 | |
964 | /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) |
965 | * corresponding to bit (e.g. bit 5 controls TID 5). |
966 | * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ |
967 | __le16 tid_disable_tx; |
968 | |
969 | __le16 rate_n_flags; |
970 | |
971 | /* TID for which to add block-ack support. |
972 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
973 | u8 add_immediate_ba_tid; |
974 | |
975 | /* TID for which to remove block-ack support. |
976 | * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ |
977 | u8 remove_immediate_ba_tid; |
978 | |
979 | /* Starting Sequence Number for added block-ack support. |
980 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
981 | __le16 add_immediate_ba_ssn; |
982 | } __packed; |
983 | |
984 | struct il4965_addsta_cmd { |
985 | u8 mode; /* 1: modify existing, 0: add new station */ |
986 | u8 reserved[3]; |
987 | struct sta_id_modify sta; |
988 | struct il4965_keyinfo key; |
989 | __le32 station_flags; /* STA_FLG_* */ |
990 | __le32 station_flags_msk; /* STA_FLG_* */ |
991 | |
992 | /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) |
993 | * corresponding to bit (e.g. bit 5 controls TID 5). |
994 | * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ |
995 | __le16 tid_disable_tx; |
996 | |
997 | __le16 reserved1; |
998 | |
999 | /* TID for which to add block-ack support. |
1000 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
1001 | u8 add_immediate_ba_tid; |
1002 | |
1003 | /* TID for which to remove block-ack support. |
1004 | * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ |
1005 | u8 remove_immediate_ba_tid; |
1006 | |
1007 | /* Starting Sequence Number for added block-ack support. |
1008 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
1009 | __le16 add_immediate_ba_ssn; |
1010 | |
1011 | /* |
1012 | * Number of packets OK to transmit to station even though |
1013 | * it is asleep -- used to synchronise PS-poll and u-APSD |
1014 | * responses while ucode keeps track of STA sleep state. |
1015 | */ |
1016 | __le16 sleep_tx_count; |
1017 | |
1018 | __le16 reserved2; |
1019 | } __packed; |
1020 | |
1021 | /* Wrapper struct for 3945 and 4965 addsta_cmd structures */ |
1022 | struct il_addsta_cmd { |
1023 | u8 mode; /* 1: modify existing, 0: add new station */ |
1024 | u8 reserved[3]; |
1025 | struct sta_id_modify sta; |
1026 | struct il4965_keyinfo key; |
1027 | __le32 station_flags; /* STA_FLG_* */ |
1028 | __le32 station_flags_msk; /* STA_FLG_* */ |
1029 | |
1030 | /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) |
1031 | * corresponding to bit (e.g. bit 5 controls TID 5). |
1032 | * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ |
1033 | __le16 tid_disable_tx; |
1034 | |
1035 | __le16 rate_n_flags; /* 3945 only */ |
1036 | |
1037 | /* TID for which to add block-ack support. |
1038 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
1039 | u8 add_immediate_ba_tid; |
1040 | |
1041 | /* TID for which to remove block-ack support. |
1042 | * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ |
1043 | u8 remove_immediate_ba_tid; |
1044 | |
1045 | /* Starting Sequence Number for added block-ack support. |
1046 | * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ |
1047 | __le16 add_immediate_ba_ssn; |
1048 | |
1049 | /* |
1050 | * Number of packets OK to transmit to station even though |
1051 | * it is asleep -- used to synchronise PS-poll and u-APSD |
1052 | * responses while ucode keeps track of STA sleep state. |
1053 | */ |
1054 | __le16 sleep_tx_count; |
1055 | |
1056 | __le16 reserved2; |
1057 | } __packed; |
1058 | |
1059 | #define ADD_STA_SUCCESS_MSK 0x1 |
1060 | #define ADD_STA_NO_ROOM_IN_TBL 0x2 |
1061 | #define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4 |
1062 | #define ADD_STA_MODIFY_NON_EXIST_STA 0x8 |
1063 | /* |
1064 | * C_ADD_STA = 0x18 (response) |
1065 | */ |
1066 | struct il_add_sta_resp { |
1067 | u8 status; /* ADD_STA_* */ |
1068 | } __packed; |
1069 | |
1070 | #define REM_STA_SUCCESS_MSK 0x1 |
1071 | /* |
1072 | * C_REM_STA = 0x19 (response) |
1073 | */ |
1074 | struct il_rem_sta_resp { |
1075 | u8 status; |
1076 | } __packed; |
1077 | |
1078 | /* |
1079 | * C_REM_STA = 0x19 (command) |
1080 | */ |
1081 | struct il_rem_sta_cmd { |
1082 | u8 num_sta; /* number of removed stations */ |
1083 | u8 reserved[3]; |
1084 | u8 addr[ETH_ALEN]; /* MAC addr of the first station */ |
1085 | u8 reserved2[2]; |
1086 | } __packed; |
1087 | |
1088 | #define IL_TX_FIFO_BK_MSK cpu_to_le32(BIT(0)) |
1089 | #define IL_TX_FIFO_BE_MSK cpu_to_le32(BIT(1)) |
1090 | #define IL_TX_FIFO_VI_MSK cpu_to_le32(BIT(2)) |
1091 | #define IL_TX_FIFO_VO_MSK cpu_to_le32(BIT(3)) |
1092 | #define IL_AGG_TX_QUEUE_MSK cpu_to_le32(0xffc00) |
1093 | |
1094 | #define IL_DROP_SINGLE 0 |
1095 | #define IL_DROP_SELECTED 1 |
1096 | #define IL_DROP_ALL 2 |
1097 | |
1098 | /* |
1099 | * REPLY_WEP_KEY = 0x20 |
1100 | */ |
1101 | struct il_wep_key { |
1102 | u8 key_idx; |
1103 | u8 key_offset; |
1104 | u8 reserved1[2]; |
1105 | u8 key_size; |
1106 | u8 reserved2[3]; |
1107 | u8 key[16]; |
1108 | } __packed; |
1109 | |
1110 | struct il_wep_cmd { |
1111 | u8 num_keys; |
1112 | u8 global_key_type; |
1113 | u8 flags; |
1114 | u8 reserved; |
1115 | struct il_wep_key key[]; |
1116 | } __packed; |
1117 | |
1118 | #define WEP_KEY_WEP_TYPE 1 |
1119 | #define WEP_KEYS_MAX 4 |
1120 | #define WEP_INVALID_OFFSET 0xff |
1121 | #define WEP_KEY_LEN_64 5 |
1122 | #define WEP_KEY_LEN_128 13 |
1123 | |
1124 | /****************************************************************************** |
1125 | * (4) |
1126 | * Rx Responses: |
1127 | * |
1128 | *****************************************************************************/ |
1129 | |
1130 | #define RX_RES_STATUS_NO_CRC32_ERROR cpu_to_le32(1 << 0) |
1131 | #define RX_RES_STATUS_NO_RXE_OVERFLOW cpu_to_le32(1 << 1) |
1132 | |
1133 | #define RX_RES_PHY_FLAGS_BAND_24_MSK cpu_to_le16(1 << 0) |
1134 | #define RX_RES_PHY_FLAGS_MOD_CCK_MSK cpu_to_le16(1 << 1) |
1135 | #define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK cpu_to_le16(1 << 2) |
1136 | #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK cpu_to_le16(1 << 3) |
1137 | #define RX_RES_PHY_FLAGS_ANTENNA_MSK 0x70 |
1138 | #define RX_RES_PHY_FLAGS_ANTENNA_POS 4 |
1139 | #define RX_RES_PHY_FLAGS_AGG_MSK cpu_to_le16(1 << 7) |
1140 | |
1141 | #define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8) |
1142 | #define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8) |
1143 | #define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8) |
1144 | #define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8) |
1145 | #define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8) |
1146 | #define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8) |
1147 | |
1148 | #define RX_RES_STATUS_STATION_FOUND (1<<6) |
1149 | #define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7) |
1150 | |
1151 | #define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11) |
1152 | #define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11) |
1153 | #define RX_RES_STATUS_DECRYPT_OK (0x3 << 11) |
1154 | #define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11) |
1155 | #define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11) |
1156 | |
1157 | #define RX_MPDU_RES_STATUS_ICV_OK (0x20) |
1158 | #define RX_MPDU_RES_STATUS_MIC_OK (0x40) |
1159 | #define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7) |
1160 | #define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800) |
1161 | |
1162 | struct il3945_rx_frame_stats { |
1163 | u8 phy_count; |
1164 | u8 id; |
1165 | u8 ; |
1166 | u8 agc; |
1167 | __le16 sig_avg; |
1168 | __le16 noise_diff; |
1169 | u8 payload[]; |
1170 | } __packed; |
1171 | |
1172 | struct il3945_rx_frame_hdr { |
1173 | __le16 channel; |
1174 | __le16 phy_flags; |
1175 | u8 reserved1; |
1176 | u8 rate; |
1177 | __le16 len; |
1178 | u8 payload[]; |
1179 | } __packed; |
1180 | |
1181 | struct il3945_rx_frame_end { |
1182 | __le32 status; |
1183 | __le64 timestamp; |
1184 | __le32 beacon_timestamp; |
1185 | } __packed; |
1186 | |
1187 | /* |
1188 | * N_3945_RX = 0x1b (response only, not a command) |
1189 | * |
1190 | * NOTE: DO NOT dereference from casts to this structure |
1191 | * It is provided only for calculating minimum data set size. |
1192 | * The actual offsets of the hdr and end are dynamic based on |
1193 | * stats.phy_count |
1194 | */ |
1195 | struct il3945_rx_frame { |
1196 | struct il3945_rx_frame_stats stats; |
1197 | struct il3945_rx_frame_hdr hdr; |
1198 | struct il3945_rx_frame_end end; |
1199 | } __packed; |
1200 | |
1201 | #define IL39_RX_FRAME_SIZE (4 + sizeof(struct il3945_rx_frame)) |
1202 | |
1203 | /* Fixed (non-configurable) rx data from phy */ |
1204 | |
1205 | #define IL49_RX_RES_PHY_CNT 14 |
1206 | #define IL49_RX_PHY_FLAGS_ANTENNAE_OFFSET (4) |
1207 | #define IL49_RX_PHY_FLAGS_ANTENNAE_MASK (0x70) |
1208 | #define IL49_AGC_DB_MASK (0x3f80) /* MASK(7,13) */ |
1209 | #define IL49_AGC_DB_POS (7) |
1210 | struct il4965_rx_non_cfg_phy { |
1211 | __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */ |
1212 | __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */ |
1213 | u8 [6]; /* we use even entries, 0/2/4 for A/B/C rssi */ |
1214 | u8 pad[]; |
1215 | } __packed; |
1216 | |
1217 | /* |
1218 | * N_RX = 0xc3 (response only, not a command) |
1219 | * Used only for legacy (non 11n) frames. |
1220 | */ |
1221 | struct il_rx_phy_res { |
1222 | u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */ |
1223 | u8 cfg_phy_cnt; /* configurable DSP phy data byte count */ |
1224 | u8 stat_id; /* configurable DSP phy data set ID */ |
1225 | u8 reserved1; |
1226 | __le64 timestamp; /* TSF at on air rise */ |
1227 | __le32 beacon_time_stamp; /* beacon at on-air rise */ |
1228 | __le16 phy_flags; /* general phy flags: band, modulation, ... */ |
1229 | __le16 channel; /* channel number */ |
1230 | u8 non_cfg_phy_buf[32]; /* for various implementations of non_cfg_phy */ |
1231 | __le32 rate_n_flags; /* RATE_MCS_* */ |
1232 | __le16 byte_count; /* frame's byte-count */ |
1233 | __le16 frame_time; /* frame's time on the air */ |
1234 | } __packed; |
1235 | |
1236 | struct il_rx_mpdu_res_start { |
1237 | __le16 byte_count; |
1238 | __le16 reserved; |
1239 | } __packed; |
1240 | |
1241 | /****************************************************************************** |
1242 | * (5) |
1243 | * Tx Commands & Responses: |
1244 | * |
1245 | * Driver must place each C_TX command into one of the prioritized Tx |
1246 | * queues in host DRAM, shared between driver and device (see comments for |
1247 | * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode |
1248 | * are preparing to transmit, the device pulls the Tx command over the PCI |
1249 | * bus via one of the device's Tx DMA channels, to fill an internal FIFO |
1250 | * from which data will be transmitted. |
1251 | * |
1252 | * uCode handles all timing and protocol related to control frames |
1253 | * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler |
1254 | * handle reception of block-acks; uCode updates the host driver via |
1255 | * N_COMPRESSED_BA. |
1256 | * |
1257 | * uCode handles retrying Tx when an ACK is expected but not received. |
1258 | * This includes trying lower data rates than the one requested in the Tx |
1259 | * command, as set up by the C_RATE_SCALE (for 3945) or |
1260 | * C_TX_LINK_QUALITY_CMD (4965). |
1261 | * |
1262 | * Driver sets up transmit power for various rates via C_TX_PWR_TBL. |
1263 | * This command must be executed after every RXON command, before Tx can occur. |
1264 | *****************************************************************************/ |
1265 | |
1266 | /* C_TX Tx flags field */ |
1267 | |
1268 | /* |
1269 | * 1: Use Request-To-Send protocol before this frame. |
1270 | * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. |
1271 | */ |
1272 | #define TX_CMD_FLG_RTS_MSK cpu_to_le32(1 << 1) |
1273 | |
1274 | /* |
1275 | * 1: Transmit Clear-To-Send to self before this frame. |
1276 | * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames. |
1277 | * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. |
1278 | */ |
1279 | #define TX_CMD_FLG_CTS_MSK cpu_to_le32(1 << 2) |
1280 | |
1281 | /* 1: Expect ACK from receiving station |
1282 | * 0: Don't expect ACK (MAC header's duration field s/b 0) |
1283 | * Set this for unicast frames, but not broadcast/multicast. */ |
1284 | #define TX_CMD_FLG_ACK_MSK cpu_to_le32(1 << 3) |
1285 | |
1286 | /* For 4965 devices: |
1287 | * 1: Use rate scale table (see C_TX_LINK_QUALITY_CMD). |
1288 | * Tx command's initial_rate_idx indicates first rate to try; |
1289 | * uCode walks through table for additional Tx attempts. |
1290 | * 0: Use Tx rate/MCS from Tx command's rate_n_flags field. |
1291 | * This rate will be used for all Tx attempts; it will not be scaled. */ |
1292 | #define TX_CMD_FLG_STA_RATE_MSK cpu_to_le32(1 << 4) |
1293 | |
1294 | /* 1: Expect immediate block-ack. |
1295 | * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */ |
1296 | #define TX_CMD_FLG_IMM_BA_RSP_MASK cpu_to_le32(1 << 6) |
1297 | |
1298 | /* |
1299 | * 1: Frame requires full Tx-Op protection. |
1300 | * Set this if either RTS or CTS Tx Flag gets set. |
1301 | */ |
1302 | #define TX_CMD_FLG_FULL_TXOP_PROT_MSK cpu_to_le32(1 << 7) |
1303 | |
1304 | /* Tx antenna selection field; used only for 3945, reserved (0) for 4965 devices. |
1305 | * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */ |
1306 | #define TX_CMD_FLG_ANT_SEL_MSK cpu_to_le32(0xf00) |
1307 | #define TX_CMD_FLG_ANT_A_MSK cpu_to_le32(1 << 8) |
1308 | #define TX_CMD_FLG_ANT_B_MSK cpu_to_le32(1 << 9) |
1309 | |
1310 | /* 1: uCode overrides sequence control field in MAC header. |
1311 | * 0: Driver provides sequence control field in MAC header. |
1312 | * Set this for management frames, non-QOS data frames, non-unicast frames, |
1313 | * and also in Tx command embedded in C_SCAN for active scans. */ |
1314 | #define TX_CMD_FLG_SEQ_CTL_MSK cpu_to_le32(1 << 13) |
1315 | |
1316 | /* 1: This frame is non-last MPDU; more fragments are coming. |
1317 | * 0: Last fragment, or not using fragmentation. */ |
1318 | #define TX_CMD_FLG_MORE_FRAG_MSK cpu_to_le32(1 << 14) |
1319 | |
1320 | /* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame. |
1321 | * 0: No TSF required in outgoing frame. |
1322 | * Set this for transmitting beacons and probe responses. */ |
1323 | #define TX_CMD_FLG_TSF_MSK cpu_to_le32(1 << 16) |
1324 | |
1325 | /* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword |
1326 | * alignment of frame's payload data field. |
1327 | * 0: No pad |
1328 | * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4 |
1329 | * field (but not both). Driver must align frame data (i.e. data following |
1330 | * MAC header) to DWORD boundary. */ |
1331 | #define TX_CMD_FLG_MH_PAD_MSK cpu_to_le32(1 << 20) |
1332 | |
1333 | /* accelerate aggregation support |
1334 | * 0 - no CCMP encryption; 1 - CCMP encryption */ |
1335 | #define TX_CMD_FLG_AGG_CCMP_MSK cpu_to_le32(1 << 22) |
1336 | |
1337 | /* HCCA-AP - disable duration overwriting. */ |
1338 | #define TX_CMD_FLG_DUR_MSK cpu_to_le32(1 << 25) |
1339 | |
1340 | /* |
1341 | * TX command security control |
1342 | */ |
1343 | #define TX_CMD_SEC_WEP 0x01 |
1344 | #define TX_CMD_SEC_CCM 0x02 |
1345 | #define TX_CMD_SEC_TKIP 0x03 |
1346 | #define TX_CMD_SEC_MSK 0x03 |
1347 | #define TX_CMD_SEC_SHIFT 6 |
1348 | #define TX_CMD_SEC_KEY128 0x08 |
1349 | |
1350 | /* |
1351 | * C_TX = 0x1c (command) |
1352 | */ |
1353 | |
1354 | struct il3945_tx_cmd { |
1355 | /* |
1356 | * MPDU byte count: |
1357 | * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, |
1358 | * + 8 byte IV for CCM or TKIP (not used for WEP) |
1359 | * + Data payload |
1360 | * + 8-byte MIC (not used for CCM/WEP) |
1361 | * NOTE: Does not include Tx command bytes, post-MAC pad bytes, |
1362 | * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i |
1363 | * Range: 14-2342 bytes. |
1364 | */ |
1365 | __le16 len; |
1366 | |
1367 | /* |
1368 | * MPDU or MSDU byte count for next frame. |
1369 | * Used for fragmentation and bursting, but not 11n aggregation. |
1370 | * Same as "len", but for next frame. Set to 0 if not applicable. |
1371 | */ |
1372 | __le16 next_frame_len; |
1373 | |
1374 | __le32 tx_flags; /* TX_CMD_FLG_* */ |
1375 | |
1376 | u8 rate; |
1377 | |
1378 | /* Index of recipient station in uCode's station table */ |
1379 | u8 sta_id; |
1380 | u8 tid_tspec; |
1381 | u8 sec_ctl; |
1382 | u8 key[16]; |
1383 | union { |
1384 | u8 byte[8]; |
1385 | __le16 word[4]; |
1386 | __le32 dw[2]; |
1387 | } tkip_mic; |
1388 | __le32 next_frame_info; |
1389 | union { |
1390 | __le32 life_time; |
1391 | __le32 attempt; |
1392 | } stop_time; |
1393 | u8 supp_rates[2]; |
1394 | u8 rts_retry_limit; /*byte 50 */ |
1395 | u8 data_retry_limit; /*byte 51 */ |
1396 | union { |
1397 | __le16 pm_frame_timeout; |
1398 | __le16 attempt_duration; |
1399 | } timeout; |
1400 | |
1401 | /* |
1402 | * Duration of EDCA burst Tx Opportunity, in 32-usec units. |
1403 | * Set this if txop time is not specified by HCCA protocol (e.g. by AP). |
1404 | */ |
1405 | __le16 driver_txop; |
1406 | |
1407 | /* |
1408 | * MAC header goes here, followed by 2 bytes padding if MAC header |
1409 | * length is 26 or 30 bytes, followed by payload data |
1410 | */ |
1411 | union { |
1412 | DECLARE_FLEX_ARRAY(u8, payload); |
1413 | DECLARE_FLEX_ARRAY(struct ieee80211_hdr, hdr); |
1414 | }; |
1415 | } __packed; |
1416 | |
1417 | /* |
1418 | * C_TX = 0x1c (response) |
1419 | */ |
1420 | struct il3945_tx_resp { |
1421 | u8 failure_rts; |
1422 | u8 failure_frame; |
1423 | u8 bt_kill_count; |
1424 | u8 rate; |
1425 | __le32 wireless_media_time; |
1426 | __le32 status; /* TX status */ |
1427 | } __packed; |
1428 | |
1429 | /* |
1430 | * 4965 uCode updates these Tx attempt count values in host DRAM. |
1431 | * Used for managing Tx retries when expecting block-acks. |
1432 | * Driver should set these fields to 0. |
1433 | */ |
1434 | struct il_dram_scratch { |
1435 | u8 try_cnt; /* Tx attempts */ |
1436 | u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */ |
1437 | __le16 reserved; |
1438 | } __packed; |
1439 | |
1440 | struct il_tx_cmd { |
1441 | /* |
1442 | * MPDU byte count: |
1443 | * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, |
1444 | * + 8 byte IV for CCM or TKIP (not used for WEP) |
1445 | * + Data payload |
1446 | * + 8-byte MIC (not used for CCM/WEP) |
1447 | * NOTE: Does not include Tx command bytes, post-MAC pad bytes, |
1448 | * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i |
1449 | * Range: 14-2342 bytes. |
1450 | */ |
1451 | __le16 len; |
1452 | |
1453 | /* |
1454 | * MPDU or MSDU byte count for next frame. |
1455 | * Used for fragmentation and bursting, but not 11n aggregation. |
1456 | * Same as "len", but for next frame. Set to 0 if not applicable. |
1457 | */ |
1458 | __le16 next_frame_len; |
1459 | |
1460 | __le32 tx_flags; /* TX_CMD_FLG_* */ |
1461 | |
1462 | /* uCode may modify this field of the Tx command (in host DRAM!). |
1463 | * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */ |
1464 | struct il_dram_scratch scratch; |
1465 | |
1466 | /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */ |
1467 | __le32 rate_n_flags; /* RATE_MCS_* */ |
1468 | |
1469 | /* Index of destination station in uCode's station table */ |
1470 | u8 sta_id; |
1471 | |
1472 | /* Type of security encryption: CCM or TKIP */ |
1473 | u8 sec_ctl; /* TX_CMD_SEC_* */ |
1474 | |
1475 | /* |
1476 | * Index into rate table (see C_TX_LINK_QUALITY_CMD) for initial |
1477 | * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for |
1478 | * data frames, this field may be used to selectively reduce initial |
1479 | * rate (via non-0 value) for special frames (e.g. management), while |
1480 | * still supporting rate scaling for all frames. |
1481 | */ |
1482 | u8 initial_rate_idx; |
1483 | u8 reserved; |
1484 | u8 key[16]; |
1485 | __le16 next_frame_flags; |
1486 | __le16 reserved2; |
1487 | union { |
1488 | __le32 life_time; |
1489 | __le32 attempt; |
1490 | } stop_time; |
1491 | |
1492 | /* Host DRAM physical address pointer to "scratch" in this command. |
1493 | * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */ |
1494 | __le32 dram_lsb_ptr; |
1495 | u8 dram_msb_ptr; |
1496 | |
1497 | u8 rts_retry_limit; /*byte 50 */ |
1498 | u8 data_retry_limit; /*byte 51 */ |
1499 | u8 tid_tspec; |
1500 | union { |
1501 | __le16 pm_frame_timeout; |
1502 | __le16 attempt_duration; |
1503 | } timeout; |
1504 | |
1505 | /* |
1506 | * Duration of EDCA burst Tx Opportunity, in 32-usec units. |
1507 | * Set this if txop time is not specified by HCCA protocol (e.g. by AP). |
1508 | */ |
1509 | __le16 driver_txop; |
1510 | |
1511 | /* |
1512 | * MAC header goes here, followed by 2 bytes padding if MAC header |
1513 | * length is 26 or 30 bytes, followed by payload data |
1514 | */ |
1515 | u8 payload[0]; |
1516 | struct ieee80211_hdr hdr[]; |
1517 | } __packed; |
1518 | |
1519 | /* TX command response is sent after *3945* transmission attempts. |
1520 | * |
1521 | * NOTES: |
1522 | * |
1523 | * TX_STATUS_FAIL_NEXT_FRAG |
1524 | * |
1525 | * If the fragment flag in the MAC header for the frame being transmitted |
1526 | * is set and there is insufficient time to transmit the next frame, the |
1527 | * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'. |
1528 | * |
1529 | * TX_STATUS_FIFO_UNDERRUN |
1530 | * |
1531 | * Indicates the host did not provide bytes to the FIFO fast enough while |
1532 | * a TX was in progress. |
1533 | * |
1534 | * TX_STATUS_FAIL_MGMNT_ABORT |
1535 | * |
1536 | * This status is only possible if the ABORT ON MGMT RX parameter was |
1537 | * set to true with the TX command. |
1538 | * |
1539 | * If the MSB of the status parameter is set then an abort sequence is |
1540 | * required. This sequence consists of the host activating the TX Abort |
1541 | * control line, and then waiting for the TX Abort command response. This |
1542 | * indicates that a the device is no longer in a transmit state, and that the |
1543 | * command FIFO has been cleared. The host must then deactivate the TX Abort |
1544 | * control line. Receiving is still allowed in this case. |
1545 | */ |
1546 | enum { |
1547 | TX_3945_STATUS_SUCCESS = 0x01, |
1548 | TX_3945_STATUS_DIRECT_DONE = 0x02, |
1549 | TX_3945_STATUS_FAIL_SHORT_LIMIT = 0x82, |
1550 | TX_3945_STATUS_FAIL_LONG_LIMIT = 0x83, |
1551 | TX_3945_STATUS_FAIL_FIFO_UNDERRUN = 0x84, |
1552 | TX_3945_STATUS_FAIL_MGMNT_ABORT = 0x85, |
1553 | TX_3945_STATUS_FAIL_NEXT_FRAG = 0x86, |
1554 | TX_3945_STATUS_FAIL_LIFE_EXPIRE = 0x87, |
1555 | TX_3945_STATUS_FAIL_DEST_PS = 0x88, |
1556 | TX_3945_STATUS_FAIL_ABORTED = 0x89, |
1557 | TX_3945_STATUS_FAIL_BT_RETRY = 0x8a, |
1558 | TX_3945_STATUS_FAIL_STA_INVALID = 0x8b, |
1559 | TX_3945_STATUS_FAIL_FRAG_DROPPED = 0x8c, |
1560 | TX_3945_STATUS_FAIL_TID_DISABLE = 0x8d, |
1561 | TX_3945_STATUS_FAIL_FRAME_FLUSHED = 0x8e, |
1562 | TX_3945_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, |
1563 | TX_3945_STATUS_FAIL_TX_LOCKED = 0x90, |
1564 | TX_3945_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, |
1565 | }; |
1566 | |
1567 | /* |
1568 | * TX command response is sent after *4965* transmission attempts. |
1569 | * |
1570 | * both postpone and abort status are expected behavior from uCode. there is |
1571 | * no special operation required from driver; except for RFKILL_FLUSH, |
1572 | * which required tx flush host command to flush all the tx frames in queues |
1573 | */ |
1574 | enum { |
1575 | TX_STATUS_SUCCESS = 0x01, |
1576 | TX_STATUS_DIRECT_DONE = 0x02, |
1577 | /* postpone TX */ |
1578 | TX_STATUS_POSTPONE_DELAY = 0x40, |
1579 | TX_STATUS_POSTPONE_FEW_BYTES = 0x41, |
1580 | TX_STATUS_POSTPONE_QUIET_PERIOD = 0x43, |
1581 | TX_STATUS_POSTPONE_CALC_TTAK = 0x44, |
1582 | /* abort TX */ |
1583 | TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY = 0x81, |
1584 | TX_STATUS_FAIL_SHORT_LIMIT = 0x82, |
1585 | TX_STATUS_FAIL_LONG_LIMIT = 0x83, |
1586 | TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84, |
1587 | TX_STATUS_FAIL_DRAIN_FLOW = 0x85, |
1588 | TX_STATUS_FAIL_RFKILL_FLUSH = 0x86, |
1589 | TX_STATUS_FAIL_LIFE_EXPIRE = 0x87, |
1590 | TX_STATUS_FAIL_DEST_PS = 0x88, |
1591 | TX_STATUS_FAIL_HOST_ABORTED = 0x89, |
1592 | TX_STATUS_FAIL_BT_RETRY = 0x8a, |
1593 | TX_STATUS_FAIL_STA_INVALID = 0x8b, |
1594 | TX_STATUS_FAIL_FRAG_DROPPED = 0x8c, |
1595 | TX_STATUS_FAIL_TID_DISABLE = 0x8d, |
1596 | TX_STATUS_FAIL_FIFO_FLUSHED = 0x8e, |
1597 | TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, |
1598 | TX_STATUS_FAIL_PASSIVE_NO_RX = 0x90, |
1599 | TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, |
1600 | }; |
1601 | |
1602 | #define TX_PACKET_MODE_REGULAR 0x0000 |
1603 | #define TX_PACKET_MODE_BURST_SEQ 0x0100 |
1604 | #define TX_PACKET_MODE_BURST_FIRST 0x0200 |
1605 | |
1606 | enum { |
1607 | TX_POWER_PA_NOT_ACTIVE = 0x0, |
1608 | }; |
1609 | |
1610 | enum { |
1611 | TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */ |
1612 | TX_STATUS_DELAY_MSK = 0x00000040, |
1613 | TX_STATUS_ABORT_MSK = 0x00000080, |
1614 | TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */ |
1615 | TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */ |
1616 | TX_RESERVED = 0x00780000, /* bits 19:22 */ |
1617 | TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */ |
1618 | TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */ |
1619 | }; |
1620 | |
1621 | /* ******************************* |
1622 | * TX aggregation status |
1623 | ******************************* */ |
1624 | |
1625 | enum { |
1626 | AGG_TX_STATE_TRANSMITTED = 0x00, |
1627 | AGG_TX_STATE_UNDERRUN_MSK = 0x01, |
1628 | AGG_TX_STATE_FEW_BYTES_MSK = 0x04, |
1629 | AGG_TX_STATE_ABORT_MSK = 0x08, |
1630 | AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10, |
1631 | AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20, |
1632 | AGG_TX_STATE_SCD_QUERY_MSK = 0x80, |
1633 | AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100, |
1634 | AGG_TX_STATE_RESPONSE_MSK = 0x1ff, |
1635 | AGG_TX_STATE_DUMP_TX_MSK = 0x200, |
1636 | AGG_TX_STATE_DELAY_TX_MSK = 0x400 |
1637 | }; |
1638 | |
1639 | #define AGG_TX_STATUS_MSK 0x00000fff /* bits 0:11 */ |
1640 | #define AGG_TX_TRY_MSK 0x0000f000 /* bits 12:15 */ |
1641 | |
1642 | #define AGG_TX_STATE_LAST_SENT_MSK (AGG_TX_STATE_LAST_SENT_TTL_MSK | \ |
1643 | AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK) |
1644 | |
1645 | /* # tx attempts for first frame in aggregation */ |
1646 | #define AGG_TX_STATE_TRY_CNT_POS 12 |
1647 | #define AGG_TX_STATE_TRY_CNT_MSK 0xf000 |
1648 | |
1649 | /* Command ID and sequence number of Tx command for this frame */ |
1650 | #define AGG_TX_STATE_SEQ_NUM_POS 16 |
1651 | #define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000 |
1652 | |
1653 | /* |
1654 | * C_TX = 0x1c (response) |
1655 | * |
1656 | * This response may be in one of two slightly different formats, indicated |
1657 | * by the frame_count field: |
1658 | * |
1659 | * 1) No aggregation (frame_count == 1). This reports Tx results for |
1660 | * a single frame. Multiple attempts, at various bit rates, may have |
1661 | * been made for this frame. |
1662 | * |
1663 | * 2) Aggregation (frame_count > 1). This reports Tx results for |
1664 | * 2 or more frames that used block-acknowledge. All frames were |
1665 | * transmitted at same rate. Rate scaling may have been used if first |
1666 | * frame in this new agg block failed in previous agg block(s). |
1667 | * |
1668 | * Note that, for aggregation, ACK (block-ack) status is not delivered here; |
1669 | * block-ack has not been received by the time the 4965 device records |
1670 | * this status. |
1671 | * This status relates to reasons the tx might have been blocked or aborted |
1672 | * within the sending station (this 4965 device), rather than whether it was |
1673 | * received successfully by the destination station. |
1674 | */ |
1675 | struct agg_tx_status { |
1676 | __le16 status; |
1677 | __le16 sequence; |
1678 | } __packed; |
1679 | |
1680 | struct il4965_tx_resp { |
1681 | u8 frame_count; /* 1 no aggregation, >1 aggregation */ |
1682 | u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */ |
1683 | u8 failure_rts; /* # failures due to unsuccessful RTS */ |
1684 | u8 failure_frame; /* # failures due to no ACK (unused for agg) */ |
1685 | |
1686 | /* For non-agg: Rate at which frame was successful. |
1687 | * For agg: Rate at which all frames were transmitted. */ |
1688 | __le32 rate_n_flags; /* RATE_MCS_* */ |
1689 | |
1690 | /* For non-agg: RTS + CTS + frame tx attempts time + ACK. |
1691 | * For agg: RTS + CTS + aggregation tx time + block-ack time. */ |
1692 | __le16 wireless_media_time; /* uSecs */ |
1693 | |
1694 | __le16 reserved; |
1695 | __le32 pa_power1; /* RF power amplifier measurement (not used) */ |
1696 | __le32 pa_power2; |
1697 | |
1698 | /* |
1699 | * For non-agg: frame status TX_STATUS_* |
1700 | * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status |
1701 | * fields follow this one, up to frame_count. |
1702 | * Bit fields: |
1703 | * 11- 0: AGG_TX_STATE_* status code |
1704 | * 15-12: Retry count for 1st frame in aggregation (retries |
1705 | * occur if tx failed for this frame when it was a |
1706 | * member of a previous aggregation block). If rate |
1707 | * scaling is used, retry count indicates the rate |
1708 | * table entry used for all frames in the new agg. |
1709 | * 31-16: Sequence # for this frame's Tx cmd (not SSN!) |
1710 | */ |
1711 | union { |
1712 | __le32 status; |
1713 | DECLARE_FLEX_ARRAY(struct agg_tx_status, agg_status); /* for each agg frame */ |
1714 | } u; |
1715 | } __packed; |
1716 | |
1717 | /* |
1718 | * N_COMPRESSED_BA = 0xc5 (response only, not a command) |
1719 | * |
1720 | * Reports Block-Acknowledge from recipient station |
1721 | */ |
1722 | struct il_compressed_ba_resp { |
1723 | __le32 sta_addr_lo32; |
1724 | __le16 sta_addr_hi16; |
1725 | __le16 reserved; |
1726 | |
1727 | /* Index of recipient (BA-sending) station in uCode's station table */ |
1728 | u8 sta_id; |
1729 | u8 tid; |
1730 | __le16 seq_ctl; |
1731 | __le64 bitmap; |
1732 | __le16 scd_flow; |
1733 | __le16 scd_ssn; |
1734 | } __packed; |
1735 | |
1736 | /* |
1737 | * C_TX_PWR_TBL = 0x97 (command, has simple generic response) |
1738 | * |
1739 | * See details under "TXPOWER" in 4965.h. |
1740 | */ |
1741 | |
1742 | struct il3945_txpowertable_cmd { |
1743 | u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ |
1744 | u8 reserved; |
1745 | __le16 channel; |
1746 | struct il3945_power_per_rate power[IL_MAX_RATES]; |
1747 | } __packed; |
1748 | |
1749 | struct il4965_txpowertable_cmd { |
1750 | u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ |
1751 | u8 reserved; |
1752 | __le16 channel; |
1753 | struct il4965_tx_power_db tx_power; |
1754 | } __packed; |
1755 | |
1756 | /** |
1757 | * struct il3945_rate_scaling_cmd - Rate Scaling Command & Response |
1758 | * |
1759 | * C_RATE_SCALE = 0x47 (command, has simple generic response) |
1760 | * |
1761 | * NOTE: The table of rates passed to the uCode via the |
1762 | * RATE_SCALE command sets up the corresponding order of |
1763 | * rates used for all related commands, including rate |
1764 | * masks, etc. |
1765 | * |
1766 | * For example, if you set 9MB (PLCP 0x0f) as the first |
1767 | * rate in the rate table, the bit mask for that rate |
1768 | * when passed through ofdm_basic_rates on the C_RXON |
1769 | * command would be bit 0 (1 << 0) |
1770 | */ |
1771 | struct il3945_rate_scaling_info { |
1772 | __le16 rate_n_flags; |
1773 | u8 try_cnt; |
1774 | u8 next_rate_idx; |
1775 | } __packed; |
1776 | |
1777 | struct il3945_rate_scaling_cmd { |
1778 | u8 table_id; |
1779 | u8 reserved[3]; |
1780 | struct il3945_rate_scaling_info table[IL_MAX_RATES]; |
1781 | } __packed; |
1782 | |
1783 | /*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */ |
1784 | #define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0) |
1785 | |
1786 | /* # of EDCA prioritized tx fifos */ |
1787 | #define LINK_QUAL_AC_NUM AC_NUM |
1788 | |
1789 | /* # entries in rate scale table to support Tx retries */ |
1790 | #define LINK_QUAL_MAX_RETRY_NUM 16 |
1791 | |
1792 | /* Tx antenna selection values */ |
1793 | #define LINK_QUAL_ANT_A_MSK (1 << 0) |
1794 | #define LINK_QUAL_ANT_B_MSK (1 << 1) |
1795 | #define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK) |
1796 | |
1797 | /** |
1798 | * struct il_link_qual_general_params |
1799 | * |
1800 | * Used in C_TX_LINK_QUALITY_CMD |
1801 | */ |
1802 | struct il_link_qual_general_params { |
1803 | u8 flags; |
1804 | |
1805 | /* No entries at or above this (driver chosen) idx contain MIMO */ |
1806 | u8 mimo_delimiter; |
1807 | |
1808 | /* Best single antenna to use for single stream (legacy, SISO). */ |
1809 | u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */ |
1810 | |
1811 | /* Best antennas to use for MIMO (unused for 4965, assumes both). */ |
1812 | u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */ |
1813 | |
1814 | /* |
1815 | * If driver needs to use different initial rates for different |
1816 | * EDCA QOS access categories (as implemented by tx fifos 0-3), |
1817 | * this table will set that up, by indicating the idxes in the |
1818 | * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start. |
1819 | * Otherwise, driver should set all entries to 0. |
1820 | * |
1821 | * Entry usage: |
1822 | * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice |
1823 | * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3. |
1824 | */ |
1825 | u8 start_rate_idx[LINK_QUAL_AC_NUM]; |
1826 | } __packed; |
1827 | |
1828 | #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ |
1829 | #define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) |
1830 | #define LINK_QUAL_AGG_TIME_LIMIT_MIN (100) |
1831 | |
1832 | #define LINK_QUAL_AGG_DISABLE_START_DEF (3) |
1833 | #define LINK_QUAL_AGG_DISABLE_START_MAX (255) |
1834 | #define LINK_QUAL_AGG_DISABLE_START_MIN (0) |
1835 | |
1836 | #define LINK_QUAL_AGG_FRAME_LIMIT_DEF (31) |
1837 | #define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63) |
1838 | #define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0) |
1839 | |
1840 | /** |
1841 | * struct il_link_qual_agg_params |
1842 | * |
1843 | * Used in C_TX_LINK_QUALITY_CMD |
1844 | */ |
1845 | struct il_link_qual_agg_params { |
1846 | |
1847 | /* |
1848 | *Maximum number of uSec in aggregation. |
1849 | * default set to 4000 (4 milliseconds) if not configured in .cfg |
1850 | */ |
1851 | __le16 agg_time_limit; |
1852 | |
1853 | /* |
1854 | * Number of Tx retries allowed for a frame, before that frame will |
1855 | * no longer be considered for the start of an aggregation sequence |
1856 | * (scheduler will then try to tx it as single frame). |
1857 | * Driver should set this to 3. |
1858 | */ |
1859 | u8 agg_dis_start_th; |
1860 | |
1861 | /* |
1862 | * Maximum number of frames in aggregation. |
1863 | * 0 = no limit (default). 1 = no aggregation. |
1864 | * Other values = max # frames in aggregation. |
1865 | */ |
1866 | u8 agg_frame_cnt_limit; |
1867 | |
1868 | __le32 reserved; |
1869 | } __packed; |
1870 | |
1871 | /* |
1872 | * C_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response) |
1873 | * |
1874 | * For 4965 devices only; 3945 uses C_RATE_SCALE. |
1875 | * |
1876 | * Each station in the 4965 device's internal station table has its own table |
1877 | * of 16 |
1878 | * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when |
1879 | * an ACK is not received. This command replaces the entire table for |
1880 | * one station. |
1881 | * |
1882 | * NOTE: Station must already be in 4965 device's station table. |
1883 | * Use C_ADD_STA. |
1884 | * |
1885 | * The rate scaling procedures described below work well. Of course, other |
1886 | * procedures are possible, and may work better for particular environments. |
1887 | * |
1888 | * |
1889 | * FILLING THE RATE TBL |
1890 | * |
1891 | * Given a particular initial rate and mode, as determined by the rate |
1892 | * scaling algorithm described below, the Linux driver uses the following |
1893 | * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the |
1894 | * Link Quality command: |
1895 | * |
1896 | * |
1897 | * 1) If using High-throughput (HT) (SISO or MIMO) initial rate: |
1898 | * a) Use this same initial rate for first 3 entries. |
1899 | * b) Find next lower available rate using same mode (SISO or MIMO), |
1900 | * use for next 3 entries. If no lower rate available, switch to |
1901 | * legacy mode (no HT40 channel, no MIMO, no short guard interval). |
1902 | * c) If using MIMO, set command's mimo_delimiter to number of entries |
1903 | * using MIMO (3 or 6). |
1904 | * d) After trying 2 HT rates, switch to legacy mode (no HT40 channel, |
1905 | * no MIMO, no short guard interval), at the next lower bit rate |
1906 | * (e.g. if second HT bit rate was 54, try 48 legacy), and follow |
1907 | * legacy procedure for remaining table entries. |
1908 | * |
1909 | * 2) If using legacy initial rate: |
1910 | * a) Use the initial rate for only one entry. |
1911 | * b) For each following entry, reduce the rate to next lower available |
1912 | * rate, until reaching the lowest available rate. |
1913 | * c) When reducing rate, also switch antenna selection. |
1914 | * d) Once lowest available rate is reached, repeat this rate until |
1915 | * rate table is filled (16 entries), switching antenna each entry. |
1916 | * |
1917 | * |
1918 | * ACCUMULATING HISTORY |
1919 | * |
1920 | * The rate scaling algorithm for 4965 devices, as implemented in Linux driver, |
1921 | * uses two sets of frame Tx success history: One for the current/active |
1922 | * modulation mode, and one for a speculative/search mode that is being |
1923 | * attempted. If the speculative mode turns out to be more effective (i.e. |
1924 | * actual transfer rate is better), then the driver continues to use the |
1925 | * speculative mode as the new current active mode. |
1926 | * |
1927 | * Each history set contains, separately for each possible rate, data for a |
1928 | * sliding win of the 62 most recent tx attempts at that rate. The data |
1929 | * includes a shifting bitmap of success(1)/failure(0), and sums of successful |
1930 | * and attempted frames, from which the driver can additionally calculate a |
1931 | * success ratio (success / attempted) and number of failures |
1932 | * (attempted - success), and control the size of the win (attempted). |
1933 | * The driver uses the bit map to remove successes from the success sum, as |
1934 | * the oldest tx attempts fall out of the win. |
1935 | * |
1936 | * When the 4965 device makes multiple tx attempts for a given frame, each |
1937 | * attempt might be at a different rate, and have different modulation |
1938 | * characteristics (e.g. antenna, fat channel, short guard interval), as set |
1939 | * up in the rate scaling table in the Link Quality command. The driver must |
1940 | * determine which rate table entry was used for each tx attempt, to determine |
1941 | * which rate-specific history to update, and record only those attempts that |
1942 | * match the modulation characteristics of the history set. |
1943 | * |
1944 | * When using block-ack (aggregation), all frames are transmitted at the same |
1945 | * rate, since there is no per-attempt acknowledgment from the destination |
1946 | * station. The Tx response struct il_tx_resp indicates the Tx rate in |
1947 | * rate_n_flags field. After receiving a block-ack, the driver can update |
1948 | * history for the entire block all at once. |
1949 | * |
1950 | * |
1951 | * FINDING BEST STARTING RATE: |
1952 | * |
1953 | * When working with a selected initial modulation mode (see below), the |
1954 | * driver attempts to find a best initial rate. The initial rate is the |
1955 | * first entry in the Link Quality command's rate table. |
1956 | * |
1957 | * 1) Calculate actual throughput (success ratio * expected throughput, see |
1958 | * table below) for current initial rate. Do this only if enough frames |
1959 | * have been attempted to make the value meaningful: at least 6 failed |
1960 | * tx attempts, or at least 8 successes. If not enough, don't try rate |
1961 | * scaling yet. |
1962 | * |
1963 | * 2) Find available rates adjacent to current initial rate. Available means: |
1964 | * a) supported by hardware && |
1965 | * b) supported by association && |
1966 | * c) within any constraints selected by user |
1967 | * |
1968 | * 3) Gather measured throughputs for adjacent rates. These might not have |
1969 | * enough history to calculate a throughput. That's okay, we might try |
1970 | * using one of them anyway! |
1971 | * |
1972 | * 4) Try decreasing rate if, for current rate: |
1973 | * a) success ratio is < 15% || |
1974 | * b) lower adjacent rate has better measured throughput || |
1975 | * c) higher adjacent rate has worse throughput, and lower is unmeasured |
1976 | * |
1977 | * As a sanity check, if decrease was determined above, leave rate |
1978 | * unchanged if: |
1979 | * a) lower rate unavailable |
1980 | * b) success ratio at current rate > 85% (very good) |
1981 | * c) current measured throughput is better than expected throughput |
1982 | * of lower rate (under perfect 100% tx conditions, see table below) |
1983 | * |
1984 | * 5) Try increasing rate if, for current rate: |
1985 | * a) success ratio is < 15% || |
1986 | * b) both adjacent rates' throughputs are unmeasured (try it!) || |
1987 | * b) higher adjacent rate has better measured throughput || |
1988 | * c) lower adjacent rate has worse throughput, and higher is unmeasured |
1989 | * |
1990 | * As a sanity check, if increase was determined above, leave rate |
1991 | * unchanged if: |
1992 | * a) success ratio at current rate < 70%. This is not particularly |
1993 | * good performance; higher rate is sure to have poorer success. |
1994 | * |
1995 | * 6) Re-evaluate the rate after each tx frame. If working with block- |
1996 | * acknowledge, history and stats may be calculated for the entire |
1997 | * block (including prior history that fits within the history wins), |
1998 | * before re-evaluation. |
1999 | * |
2000 | * FINDING BEST STARTING MODULATION MODE: |
2001 | * |
2002 | * After working with a modulation mode for a "while" (and doing rate scaling), |
2003 | * the driver searches for a new initial mode in an attempt to improve |
2004 | * throughput. The "while" is measured by numbers of attempted frames: |
2005 | * |
2006 | * For legacy mode, search for new mode after: |
2007 | * 480 successful frames, or 160 failed frames |
2008 | * For high-throughput modes (SISO or MIMO), search for new mode after: |
2009 | * 4500 successful frames, or 400 failed frames |
2010 | * |
2011 | * Mode switch possibilities are (3 for each mode): |
2012 | * |
2013 | * For legacy: |
2014 | * Change antenna, try SISO (if HT association), try MIMO (if HT association) |
2015 | * For SISO: |
2016 | * Change antenna, try MIMO, try shortened guard interval (SGI) |
2017 | * For MIMO: |
2018 | * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI) |
2019 | * |
2020 | * When trying a new mode, use the same bit rate as the old/current mode when |
2021 | * trying antenna switches and shortened guard interval. When switching to |
2022 | * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate |
2023 | * for which the expected throughput (under perfect conditions) is about the |
2024 | * same or slightly better than the actual measured throughput delivered by |
2025 | * the old/current mode. |
2026 | * |
2027 | * Actual throughput can be estimated by multiplying the expected throughput |
2028 | * by the success ratio (successful / attempted tx frames). Frame size is |
2029 | * not considered in this calculation; it assumes that frame size will average |
2030 | * out to be fairly consistent over several samples. The following are |
2031 | * metric values for expected throughput assuming 100% success ratio. |
2032 | * Only G band has support for CCK rates: |
2033 | * |
2034 | * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60 |
2035 | * |
2036 | * G: 7 13 35 58 40 57 72 98 121 154 177 186 186 |
2037 | * A: 0 0 0 0 40 57 72 98 121 154 177 186 186 |
2038 | * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202 |
2039 | * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211 |
2040 | * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251 |
2041 | * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257 |
2042 | * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257 |
2043 | * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264 |
2044 | * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289 |
2045 | * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293 |
2046 | * |
2047 | * After the new mode has been tried for a short while (minimum of 6 failed |
2048 | * frames or 8 successful frames), compare success ratio and actual throughput |
2049 | * estimate of the new mode with the old. If either is better with the new |
2050 | * mode, continue to use the new mode. |
2051 | * |
2052 | * Continue comparing modes until all 3 possibilities have been tried. |
2053 | * If moving from legacy to HT, try all 3 possibilities from the new HT |
2054 | * mode. After trying all 3, a best mode is found. Continue to use this mode |
2055 | * for the longer "while" described above (e.g. 480 successful frames for |
2056 | * legacy), and then repeat the search process. |
2057 | * |
2058 | */ |
2059 | struct il_link_quality_cmd { |
2060 | |
2061 | /* Index of destination/recipient station in uCode's station table */ |
2062 | u8 sta_id; |
2063 | u8 reserved1; |
2064 | __le16 control; /* not used */ |
2065 | struct il_link_qual_general_params general_params; |
2066 | struct il_link_qual_agg_params agg_params; |
2067 | |
2068 | /* |
2069 | * Rate info; when using rate-scaling, Tx command's initial_rate_idx |
2070 | * specifies 1st Tx rate attempted, via idx into this table. |
2071 | * 4965 devices works its way through table when retrying Tx. |
2072 | */ |
2073 | struct { |
2074 | __le32 rate_n_flags; /* RATE_MCS_*, RATE_* */ |
2075 | } rs_table[LINK_QUAL_MAX_RETRY_NUM]; |
2076 | __le32 reserved2; |
2077 | } __packed; |
2078 | |
2079 | /* |
2080 | * BT configuration enable flags: |
2081 | * bit 0 - 1: BT channel announcement enabled |
2082 | * 0: disable |
2083 | * bit 1 - 1: priority of BT device enabled |
2084 | * 0: disable |
2085 | */ |
2086 | #define BT_COEX_DISABLE (0x0) |
2087 | #define BT_ENABLE_CHANNEL_ANNOUNCE BIT(0) |
2088 | #define BT_ENABLE_PRIORITY BIT(1) |
2089 | |
2090 | #define BT_COEX_ENABLE (BT_ENABLE_CHANNEL_ANNOUNCE | BT_ENABLE_PRIORITY) |
2091 | |
2092 | #define BT_LEAD_TIME_DEF (0x1E) |
2093 | |
2094 | #define BT_MAX_KILL_DEF (0x5) |
2095 | |
2096 | /* |
2097 | * C_BT_CONFIG = 0x9b (command, has simple generic response) |
2098 | * |
2099 | * 3945 and 4965 devices support hardware handshake with Bluetooth device on |
2100 | * same platform. Bluetooth device alerts wireless device when it will Tx; |
2101 | * wireless device can delay or kill its own Tx to accommodate. |
2102 | */ |
2103 | struct il_bt_cmd { |
2104 | u8 flags; |
2105 | u8 lead_time; |
2106 | u8 max_kill; |
2107 | u8 reserved; |
2108 | __le32 kill_ack_mask; |
2109 | __le32 kill_cts_mask; |
2110 | } __packed; |
2111 | |
2112 | /****************************************************************************** |
2113 | * (6) |
2114 | * Spectrum Management (802.11h) Commands, Responses, Notifications: |
2115 | * |
2116 | *****************************************************************************/ |
2117 | |
2118 | /* |
2119 | * Spectrum Management |
2120 | */ |
2121 | #define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \ |
2122 | RXON_FILTER_CTL2HOST_MSK | \ |
2123 | RXON_FILTER_ACCEPT_GRP_MSK | \ |
2124 | RXON_FILTER_DIS_DECRYPT_MSK | \ |
2125 | RXON_FILTER_DIS_GRP_DECRYPT_MSK | \ |
2126 | RXON_FILTER_ASSOC_MSK | \ |
2127 | RXON_FILTER_BCON_AWARE_MSK) |
2128 | |
2129 | struct il_measure_channel { |
2130 | __le32 duration; /* measurement duration in extended beacon |
2131 | * format */ |
2132 | u8 channel; /* channel to measure */ |
2133 | u8 type; /* see enum il_measure_type */ |
2134 | __le16 reserved; |
2135 | } __packed; |
2136 | |
2137 | /* |
2138 | * C_SPECTRUM_MEASUREMENT = 0x74 (command) |
2139 | */ |
2140 | struct il_spectrum_cmd { |
2141 | __le16 len; /* number of bytes starting from token */ |
2142 | u8 token; /* token id */ |
2143 | u8 id; /* measurement id -- 0 or 1 */ |
2144 | u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */ |
2145 | u8 periodic; /* 1 = periodic */ |
2146 | __le16 path_loss_timeout; |
2147 | __le32 start_time; /* start time in extended beacon format */ |
2148 | __le32 reserved2; |
2149 | __le32 flags; /* rxon flags */ |
2150 | __le32 filter_flags; /* rxon filter flags */ |
2151 | __le16 channel_count; /* minimum 1, maximum 10 */ |
2152 | __le16 reserved3; |
2153 | struct il_measure_channel channels[10]; |
2154 | } __packed; |
2155 | |
2156 | /* |
2157 | * C_SPECTRUM_MEASUREMENT = 0x74 (response) |
2158 | */ |
2159 | struct il_spectrum_resp { |
2160 | u8 token; |
2161 | u8 id; /* id of the prior command replaced, or 0xff */ |
2162 | __le16 status; /* 0 - command will be handled |
2163 | * 1 - cannot handle (conflicts with another |
2164 | * measurement) */ |
2165 | } __packed; |
2166 | |
2167 | enum il_measurement_state { |
2168 | IL_MEASUREMENT_START = 0, |
2169 | IL_MEASUREMENT_STOP = 1, |
2170 | }; |
2171 | |
2172 | enum il_measurement_status { |
2173 | IL_MEASUREMENT_OK = 0, |
2174 | IL_MEASUREMENT_CONCURRENT = 1, |
2175 | IL_MEASUREMENT_CSA_CONFLICT = 2, |
2176 | IL_MEASUREMENT_TGH_CONFLICT = 3, |
2177 | /* 4-5 reserved */ |
2178 | IL_MEASUREMENT_STOPPED = 6, |
2179 | IL_MEASUREMENT_TIMEOUT = 7, |
2180 | IL_MEASUREMENT_PERIODIC_FAILED = 8, |
2181 | }; |
2182 | |
2183 | #define NUM_ELEMENTS_IN_HISTOGRAM 8 |
2184 | |
2185 | struct il_measurement_histogram { |
2186 | __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */ |
2187 | __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */ |
2188 | } __packed; |
2189 | |
2190 | /* clear channel availability counters */ |
2191 | struct il_measurement_cca_counters { |
2192 | __le32 ofdm; |
2193 | __le32 cck; |
2194 | } __packed; |
2195 | |
2196 | enum il_measure_type { |
2197 | IL_MEASURE_BASIC = (1 << 0), |
2198 | IL_MEASURE_CHANNEL_LOAD = (1 << 1), |
2199 | IL_MEASURE_HISTOGRAM_RPI = (1 << 2), |
2200 | IL_MEASURE_HISTOGRAM_NOISE = (1 << 3), |
2201 | IL_MEASURE_FRAME = (1 << 4), |
2202 | /* bits 5:6 are reserved */ |
2203 | IL_MEASURE_IDLE = (1 << 7), |
2204 | }; |
2205 | |
2206 | /* |
2207 | * N_SPECTRUM_MEASUREMENT = 0x75 (notification only, not a command) |
2208 | */ |
2209 | struct il_spectrum_notification { |
2210 | u8 id; /* measurement id -- 0 or 1 */ |
2211 | u8 token; |
2212 | u8 channel_idx; /* idx in measurement channel list */ |
2213 | u8 state; /* 0 - start, 1 - stop */ |
2214 | __le32 start_time; /* lower 32-bits of TSF */ |
2215 | u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */ |
2216 | u8 channel; |
2217 | u8 type; /* see enum il_measurement_type */ |
2218 | u8 reserved1; |
2219 | /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only |
2220 | * valid if applicable for measurement type requested. */ |
2221 | __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */ |
2222 | __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */ |
2223 | __le32 cca_time; /* channel load time in usecs */ |
2224 | u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 - |
2225 | * unidentified */ |
2226 | u8 reserved2[3]; |
2227 | struct il_measurement_histogram histogram; |
2228 | __le32 stop_time; /* lower 32-bits of TSF */ |
2229 | __le32 status; /* see il_measurement_status */ |
2230 | } __packed; |
2231 | |
2232 | /****************************************************************************** |
2233 | * (7) |
2234 | * Power Management Commands, Responses, Notifications: |
2235 | * |
2236 | *****************************************************************************/ |
2237 | |
2238 | /** |
2239 | * struct il_powertable_cmd - Power Table Command |
2240 | * @flags: See below: |
2241 | * |
2242 | * C_POWER_TBL = 0x77 (command, has simple generic response) |
2243 | * |
2244 | * PM allow: |
2245 | * bit 0 - '0' Driver not allow power management |
2246 | * '1' Driver allow PM (use rest of parameters) |
2247 | * |
2248 | * uCode send sleep notifications: |
2249 | * bit 1 - '0' Don't send sleep notification |
2250 | * '1' send sleep notification (SEND_PM_NOTIFICATION) |
2251 | * |
2252 | * Sleep over DTIM |
2253 | * bit 2 - '0' PM have to walk up every DTIM |
2254 | * '1' PM could sleep over DTIM till listen Interval. |
2255 | * |
2256 | * PCI power managed |
2257 | * bit 3 - '0' (PCI_CFG_LINK_CTRL & 0x1) |
2258 | * '1' !(PCI_CFG_LINK_CTRL & 0x1) |
2259 | * |
2260 | * Fast PD |
2261 | * bit 4 - '1' Put radio to sleep when receiving frame for others |
2262 | * |
2263 | * Force sleep Modes |
2264 | * bit 31/30- '00' use both mac/xtal sleeps |
2265 | * '01' force Mac sleep |
2266 | * '10' force xtal sleep |
2267 | * '11' Illegal set |
2268 | * |
2269 | * NOTE: if sleep_interval[SLEEP_INTRVL_TBL_SIZE-1] > DTIM period then |
2270 | * ucode assume sleep over DTIM is allowed and we don't need to wake up |
2271 | * for every DTIM. |
2272 | */ |
2273 | #define IL_POWER_VEC_SIZE 5 |
2274 | |
2275 | #define IL_POWER_DRIVER_ALLOW_SLEEP_MSK cpu_to_le16(BIT(0)) |
2276 | #define IL_POWER_SLEEP_OVER_DTIM_MSK cpu_to_le16(BIT(2)) |
2277 | #define IL_POWER_PCI_PM_MSK cpu_to_le16(BIT(3)) |
2278 | |
2279 | struct il3945_powertable_cmd { |
2280 | __le16 flags; |
2281 | u8 reserved[2]; |
2282 | __le32 rx_data_timeout; |
2283 | __le32 tx_data_timeout; |
2284 | __le32 sleep_interval[IL_POWER_VEC_SIZE]; |
2285 | } __packed; |
2286 | |
2287 | struct il_powertable_cmd { |
2288 | __le16 flags; |
2289 | u8 keep_alive_seconds; /* 3945 reserved */ |
2290 | u8 debug_flags; /* 3945 reserved */ |
2291 | __le32 rx_data_timeout; |
2292 | __le32 tx_data_timeout; |
2293 | __le32 sleep_interval[IL_POWER_VEC_SIZE]; |
2294 | __le32 keep_alive_beacons; |
2295 | } __packed; |
2296 | |
2297 | /* |
2298 | * N_PM_SLEEP = 0x7A (notification only, not a command) |
2299 | * all devices identical. |
2300 | */ |
2301 | struct il_sleep_notification { |
2302 | u8 pm_sleep_mode; |
2303 | u8 pm_wakeup_src; |
2304 | __le16 reserved; |
2305 | __le32 sleep_time; |
2306 | __le32 tsf_low; |
2307 | __le32 bcon_timer; |
2308 | } __packed; |
2309 | |
2310 | /* Sleep states. all devices identical. */ |
2311 | enum { |
2312 | IL_PM_NO_SLEEP = 0, |
2313 | IL_PM_SLP_MAC = 1, |
2314 | IL_PM_SLP_FULL_MAC_UNASSOCIATE = 2, |
2315 | IL_PM_SLP_FULL_MAC_CARD_STATE = 3, |
2316 | IL_PM_SLP_PHY = 4, |
2317 | IL_PM_SLP_REPENT = 5, |
2318 | IL_PM_WAKEUP_BY_TIMER = 6, |
2319 | IL_PM_WAKEUP_BY_DRIVER = 7, |
2320 | IL_PM_WAKEUP_BY_RFKILL = 8, |
2321 | /* 3 reserved */ |
2322 | IL_PM_NUM_OF_MODES = 12, |
2323 | }; |
2324 | |
2325 | /* |
2326 | * N_CARD_STATE = 0xa1 (notification only, not a command) |
2327 | */ |
2328 | struct il_card_state_notif { |
2329 | __le32 flags; |
2330 | } __packed; |
2331 | |
2332 | #define HW_CARD_DISABLED 0x01 |
2333 | #define SW_CARD_DISABLED 0x02 |
2334 | #define CT_CARD_DISABLED 0x04 |
2335 | #define RXON_CARD_DISABLED 0x10 |
2336 | |
2337 | struct il_ct_kill_config { |
2338 | __le32 reserved; |
2339 | __le32 critical_temperature_M; |
2340 | __le32 critical_temperature_R; |
2341 | } __packed; |
2342 | |
2343 | /****************************************************************************** |
2344 | * (8) |
2345 | * Scan Commands, Responses, Notifications: |
2346 | * |
2347 | *****************************************************************************/ |
2348 | |
2349 | #define SCAN_CHANNEL_TYPE_PASSIVE cpu_to_le32(0) |
2350 | #define SCAN_CHANNEL_TYPE_ACTIVE cpu_to_le32(1) |
2351 | |
2352 | /** |
2353 | * struct il_scan_channel - entry in C_SCAN channel table |
2354 | * |
2355 | * One for each channel in the scan list. |
2356 | * Each channel can independently select: |
2357 | * 1) SSID for directed active scans |
2358 | * 2) Txpower setting (for rate specified within Tx command) |
2359 | * 3) How long to stay on-channel (behavior may be modified by quiet_time, |
2360 | * quiet_plcp_th, good_CRC_th) |
2361 | * |
2362 | * To avoid uCode errors, make sure the following are true (see comments |
2363 | * under struct il_scan_cmd about max_out_time and quiet_time): |
2364 | * 1) If using passive_dwell (i.e. passive_dwell != 0): |
2365 | * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0) |
2366 | * 2) quiet_time <= active_dwell |
2367 | * 3) If restricting off-channel time (i.e. max_out_time !=0): |
2368 | * passive_dwell < max_out_time |
2369 | * active_dwell < max_out_time |
2370 | */ |
2371 | struct il3945_scan_channel { |
2372 | /* |
2373 | * type is defined as: |
2374 | * 0:0 1 = active, 0 = passive |
2375 | * 1:4 SSID direct bit map; if a bit is set, then corresponding |
2376 | * SSID IE is transmitted in probe request. |
2377 | * 5:7 reserved |
2378 | */ |
2379 | u8 type; |
2380 | u8 channel; /* band is selected by il3945_scan_cmd "flags" field */ |
2381 | struct il3945_tx_power tpc; |
2382 | __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ |
2383 | __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ |
2384 | } __packed; |
2385 | |
2386 | /* set number of direct probes u8 type */ |
2387 | #define IL39_SCAN_PROBE_MASK(n) ((BIT(n) | (BIT(n) - BIT(1)))) |
2388 | |
2389 | struct il_scan_channel { |
2390 | /* |
2391 | * type is defined as: |
2392 | * 0:0 1 = active, 0 = passive |
2393 | * 1:20 SSID direct bit map; if a bit is set, then corresponding |
2394 | * SSID IE is transmitted in probe request. |
2395 | * 21:31 reserved |
2396 | */ |
2397 | __le32 type; |
2398 | __le16 channel; /* band is selected by il_scan_cmd "flags" field */ |
2399 | u8 tx_gain; /* gain for analog radio */ |
2400 | u8 dsp_atten; /* gain for DSP */ |
2401 | __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ |
2402 | __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ |
2403 | } __packed; |
2404 | |
2405 | /* set number of direct probes __le32 type */ |
2406 | #define IL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) |
2407 | |
2408 | /** |
2409 | * struct il_ssid_ie - directed scan network information element |
2410 | * |
2411 | * Up to 20 of these may appear in C_SCAN (Note: Only 4 are in |
2412 | * 3945 SCAN api), selected by "type" bit field in struct il_scan_channel; |
2413 | * each channel may select different ssids from among the 20 (4) entries. |
2414 | * SSID IEs get transmitted in reverse order of entry. |
2415 | */ |
2416 | struct il_ssid_ie { |
2417 | u8 id; |
2418 | u8 len; |
2419 | u8 ssid[32]; |
2420 | } __packed; |
2421 | |
2422 | #define PROBE_OPTION_MAX_3945 4 |
2423 | #define PROBE_OPTION_MAX 20 |
2424 | #define TX_CMD_LIFE_TIME_INFINITE cpu_to_le32(0xFFFFFFFF) |
2425 | #define IL_GOOD_CRC_TH_DISABLED 0 |
2426 | #define IL_GOOD_CRC_TH_DEFAULT cpu_to_le16(1) |
2427 | #define IL_GOOD_CRC_TH_NEVER cpu_to_le16(0xffff) |
2428 | #define IL_MAX_SCAN_SIZE 1024 |
2429 | #define IL_MAX_CMD_SIZE 4096 |
2430 | |
2431 | /* |
2432 | * C_SCAN = 0x80 (command) |
2433 | * |
2434 | * The hardware scan command is very powerful; the driver can set it up to |
2435 | * maintain (relatively) normal network traffic while doing a scan in the |
2436 | * background. The max_out_time and suspend_time control the ratio of how |
2437 | * long the device stays on an associated network channel ("service channel") |
2438 | * vs. how long it's away from the service channel, i.e. tuned to other channels |
2439 | * for scanning. |
2440 | * |
2441 | * max_out_time is the max time off-channel (in usec), and suspend_time |
2442 | * is how long (in "extended beacon" format) that the scan is "suspended" |
2443 | * after returning to the service channel. That is, suspend_time is the |
2444 | * time that we stay on the service channel, doing normal work, between |
2445 | * scan segments. The driver may set these parameters differently to support |
2446 | * scanning when associated vs. not associated, and light vs. heavy traffic |
2447 | * loads when associated. |
2448 | * |
2449 | * After receiving this command, the device's scan engine does the following; |
2450 | * |
2451 | * 1) Sends SCAN_START notification to driver |
2452 | * 2) Checks to see if it has time to do scan for one channel |
2453 | * 3) Sends NULL packet, with power-save (PS) bit set to 1, |
2454 | * to tell AP that we're going off-channel |
2455 | * 4) Tunes to first channel in scan list, does active or passive scan |
2456 | * 5) Sends SCAN_RESULT notification to driver |
2457 | * 6) Checks to see if it has time to do scan on *next* channel in list |
2458 | * 7) Repeats 4-6 until it no longer has time to scan the next channel |
2459 | * before max_out_time expires |
2460 | * 8) Returns to service channel |
2461 | * 9) Sends NULL packet with PS=0 to tell AP that we're back |
2462 | * 10) Stays on service channel until suspend_time expires |
2463 | * 11) Repeats entire process 2-10 until list is complete |
2464 | * 12) Sends SCAN_COMPLETE notification |
2465 | * |
2466 | * For fast, efficient scans, the scan command also has support for staying on |
2467 | * a channel for just a short time, if doing active scanning and getting no |
2468 | * responses to the transmitted probe request. This time is controlled by |
2469 | * quiet_time, and the number of received packets below which a channel is |
2470 | * considered "quiet" is controlled by quiet_plcp_threshold. |
2471 | * |
2472 | * For active scanning on channels that have regulatory restrictions against |
2473 | * blindly transmitting, the scan can listen before transmitting, to make sure |
2474 | * that there is already legitimate activity on the channel. If enough |
2475 | * packets are cleanly received on the channel (controlled by good_CRC_th, |
2476 | * typical value 1), the scan engine starts transmitting probe requests. |
2477 | * |
2478 | * Driver must use separate scan commands for 2.4 vs. 5 GHz bands. |
2479 | * |
2480 | * To avoid uCode errors, see timing restrictions described under |
2481 | * struct il_scan_channel. |
2482 | */ |
2483 | |
2484 | struct il3945_scan_cmd { |
2485 | __le16 len; |
2486 | u8 reserved0; |
2487 | u8 channel_count; /* # channels in channel list */ |
2488 | __le16 quiet_time; /* dwell only this # millisecs on quiet channel |
2489 | * (only for active scan) */ |
2490 | __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ |
2491 | __le16 good_CRC_th; /* passive -> active promotion threshold */ |
2492 | __le16 reserved1; |
2493 | __le32 max_out_time; /* max usec to be away from associated (service) |
2494 | * channel */ |
2495 | __le32 suspend_time; /* pause scan this long (in "extended beacon |
2496 | * format") when returning to service channel: |
2497 | * 3945; 31:24 # beacons, 19:0 additional usec, |
2498 | * 4965; 31:22 # beacons, 21:0 additional usec. |
2499 | */ |
2500 | __le32 flags; /* RXON_FLG_* */ |
2501 | __le32 filter_flags; /* RXON_FILTER_* */ |
2502 | |
2503 | /* For active scans (set to all-0s for passive scans). |
2504 | * Does not include payload. Must specify Tx rate; no rate scaling. */ |
2505 | struct il3945_tx_cmd tx_cmd; |
2506 | |
2507 | /* For directed active scans (set to all-0s otherwise) */ |
2508 | struct il_ssid_ie direct_scan[PROBE_OPTION_MAX_3945]; |
2509 | |
2510 | /* |
2511 | * Probe request frame, followed by channel list. |
2512 | * |
2513 | * Size of probe request frame is specified by byte count in tx_cmd. |
2514 | * Channel list follows immediately after probe request frame. |
2515 | * Number of channels in list is specified by channel_count. |
2516 | * Each channel in list is of type: |
2517 | * |
2518 | * struct il3945_scan_channel channels[0]; |
2519 | * |
2520 | * NOTE: Only one band of channels can be scanned per pass. You |
2521 | * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait |
2522 | * for one scan to complete (i.e. receive N_SCAN_COMPLETE) |
2523 | * before requesting another scan. |
2524 | */ |
2525 | u8 data[]; |
2526 | } __packed; |
2527 | |
2528 | struct il_scan_cmd { |
2529 | __le16 len; |
2530 | u8 reserved0; |
2531 | u8 channel_count; /* # channels in channel list */ |
2532 | __le16 quiet_time; /* dwell only this # millisecs on quiet channel |
2533 | * (only for active scan) */ |
2534 | __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ |
2535 | __le16 good_CRC_th; /* passive -> active promotion threshold */ |
2536 | __le16 rx_chain; /* RXON_RX_CHAIN_* */ |
2537 | __le32 max_out_time; /* max usec to be away from associated (service) |
2538 | * channel */ |
2539 | __le32 suspend_time; /* pause scan this long (in "extended beacon |
2540 | * format") when returning to service chnl: |
2541 | * 3945; 31:24 # beacons, 19:0 additional usec, |
2542 | * 4965; 31:22 # beacons, 21:0 additional usec. |
2543 | */ |
2544 | __le32 flags; /* RXON_FLG_* */ |
2545 | __le32 filter_flags; /* RXON_FILTER_* */ |
2546 | |
2547 | /* For active scans (set to all-0s for passive scans). |
2548 | * Does not include payload. Must specify Tx rate; no rate scaling. */ |
2549 | struct il_tx_cmd tx_cmd; |
2550 | |
2551 | /* For directed active scans (set to all-0s otherwise) */ |
2552 | struct il_ssid_ie direct_scan[PROBE_OPTION_MAX]; |
2553 | |
2554 | /* |
2555 | * Probe request frame, followed by channel list. |
2556 | * |
2557 | * Size of probe request frame is specified by byte count in tx_cmd. |
2558 | * Channel list follows immediately after probe request frame. |
2559 | * Number of channels in list is specified by channel_count. |
2560 | * Each channel in list is of type: |
2561 | * |
2562 | * struct il_scan_channel channels[0]; |
2563 | * |
2564 | * NOTE: Only one band of channels can be scanned per pass. You |
2565 | * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait |
2566 | * for one scan to complete (i.e. receive N_SCAN_COMPLETE) |
2567 | * before requesting another scan. |
2568 | */ |
2569 | u8 data[]; |
2570 | } __packed; |
2571 | |
2572 | /* Can abort will notify by complete notification with abort status. */ |
2573 | #define CAN_ABORT_STATUS cpu_to_le32(0x1) |
2574 | /* complete notification statuses */ |
2575 | #define ABORT_STATUS 0x2 |
2576 | |
2577 | /* |
2578 | * C_SCAN = 0x80 (response) |
2579 | */ |
2580 | struct il_scanreq_notification { |
2581 | __le32 status; /* 1: okay, 2: cannot fulfill request */ |
2582 | } __packed; |
2583 | |
2584 | /* |
2585 | * N_SCAN_START = 0x82 (notification only, not a command) |
2586 | */ |
2587 | struct il_scanstart_notification { |
2588 | __le32 tsf_low; |
2589 | __le32 tsf_high; |
2590 | __le32 beacon_timer; |
2591 | u8 channel; |
2592 | u8 band; |
2593 | u8 reserved[2]; |
2594 | __le32 status; |
2595 | } __packed; |
2596 | |
2597 | #define SCAN_OWNER_STATUS 0x1 |
2598 | #define MEASURE_OWNER_STATUS 0x2 |
2599 | |
2600 | #define IL_PROBE_STATUS_OK 0 |
2601 | #define IL_PROBE_STATUS_TX_FAILED BIT(0) |
2602 | /* error statuses combined with TX_FAILED */ |
2603 | #define IL_PROBE_STATUS_FAIL_TTL BIT(1) |
2604 | #define IL_PROBE_STATUS_FAIL_BT BIT(2) |
2605 | |
2606 | #define NUMBER_OF_STATS 1 /* first __le32 is good CRC */ |
2607 | /* |
2608 | * N_SCAN_RESULTS = 0x83 (notification only, not a command) |
2609 | */ |
2610 | struct il_scanresults_notification { |
2611 | u8 channel; |
2612 | u8 band; |
2613 | u8 probe_status; |
2614 | u8 num_probe_not_sent; /* not enough time to send */ |
2615 | __le32 tsf_low; |
2616 | __le32 tsf_high; |
2617 | __le32 stats[NUMBER_OF_STATS]; |
2618 | } __packed; |
2619 | |
2620 | /* |
2621 | * N_SCAN_COMPLETE = 0x84 (notification only, not a command) |
2622 | */ |
2623 | struct il_scancomplete_notification { |
2624 | u8 scanned_channels; |
2625 | u8 status; |
2626 | u8 last_channel; |
2627 | __le32 tsf_low; |
2628 | __le32 tsf_high; |
2629 | } __packed; |
2630 | |
2631 | /****************************************************************************** |
2632 | * (9) |
2633 | * IBSS/AP Commands and Notifications: |
2634 | * |
2635 | *****************************************************************************/ |
2636 | |
2637 | enum il_ibss_manager { |
2638 | IL_NOT_IBSS_MANAGER = 0, |
2639 | IL_IBSS_MANAGER = 1, |
2640 | }; |
2641 | |
2642 | /* |
2643 | * N_BEACON = 0x90 (notification only, not a command) |
2644 | */ |
2645 | |
2646 | struct il3945_beacon_notif { |
2647 | struct il3945_tx_resp beacon_notify_hdr; |
2648 | __le32 low_tsf; |
2649 | __le32 high_tsf; |
2650 | __le32 ibss_mgr_status; |
2651 | } __packed; |
2652 | |
2653 | struct il4965_beacon_notif { |
2654 | struct il4965_tx_resp beacon_notify_hdr; |
2655 | __le32 low_tsf; |
2656 | __le32 high_tsf; |
2657 | __le32 ibss_mgr_status; |
2658 | } __packed; |
2659 | |
2660 | /* |
2661 | * C_TX_BEACON= 0x91 (command, has simple generic response) |
2662 | */ |
2663 | |
2664 | struct il3945_tx_beacon_cmd { |
2665 | struct il3945_tx_cmd tx; |
2666 | __le16 tim_idx; |
2667 | u8 tim_size; |
2668 | u8 reserved1; |
2669 | struct ieee80211_hdr frame[]; /* beacon frame */ |
2670 | } __packed; |
2671 | |
2672 | struct il_tx_beacon_cmd { |
2673 | struct il_tx_cmd tx; |
2674 | __le16 tim_idx; |
2675 | u8 tim_size; |
2676 | u8 reserved1; |
2677 | struct ieee80211_hdr frame[]; /* beacon frame */ |
2678 | } __packed; |
2679 | |
2680 | /****************************************************************************** |
2681 | * (10) |
2682 | * Statistics Commands and Notifications: |
2683 | * |
2684 | *****************************************************************************/ |
2685 | |
2686 | #define IL_TEMP_CONVERT 260 |
2687 | |
2688 | #define SUP_RATE_11A_MAX_NUM_CHANNELS 8 |
2689 | #define SUP_RATE_11B_MAX_NUM_CHANNELS 4 |
2690 | #define SUP_RATE_11G_MAX_NUM_CHANNELS 12 |
2691 | |
2692 | /* Used for passing to driver number of successes and failures per rate */ |
2693 | struct rate_histogram { |
2694 | union { |
2695 | __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; |
2696 | __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; |
2697 | __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; |
2698 | } success; |
2699 | union { |
2700 | __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; |
2701 | __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; |
2702 | __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; |
2703 | } failed; |
2704 | } __packed; |
2705 | |
2706 | /* stats command response */ |
2707 | |
2708 | struct iwl39_stats_rx_phy { |
2709 | __le32 ina_cnt; |
2710 | __le32 fina_cnt; |
2711 | __le32 plcp_err; |
2712 | __le32 crc32_err; |
2713 | __le32 overrun_err; |
2714 | __le32 early_overrun_err; |
2715 | __le32 crc32_good; |
2716 | __le32 false_alarm_cnt; |
2717 | __le32 fina_sync_err_cnt; |
2718 | __le32 sfd_timeout; |
2719 | __le32 fina_timeout; |
2720 | __le32 unresponded_rts; |
2721 | __le32 rxe_frame_limit_overrun; |
2722 | __le32 sent_ack_cnt; |
2723 | __le32 sent_cts_cnt; |
2724 | } __packed; |
2725 | |
2726 | struct iwl39_stats_rx_non_phy { |
2727 | __le32 bogus_cts; /* CTS received when not expecting CTS */ |
2728 | __le32 bogus_ack; /* ACK received when not expecting ACK */ |
2729 | __le32 non_bssid_frames; /* number of frames with BSSID that |
2730 | * doesn't belong to the STA BSSID */ |
2731 | __le32 filtered_frames; /* count frames that were dumped in the |
2732 | * filtering process */ |
2733 | __le32 non_channel_beacons; /* beacons with our bss id but not on |
2734 | * our serving channel */ |
2735 | } __packed; |
2736 | |
2737 | struct iwl39_stats_rx { |
2738 | struct iwl39_stats_rx_phy ofdm; |
2739 | struct iwl39_stats_rx_phy cck; |
2740 | struct iwl39_stats_rx_non_phy general; |
2741 | } __packed; |
2742 | |
2743 | struct iwl39_stats_tx { |
2744 | __le32 preamble_cnt; |
2745 | __le32 rx_detected_cnt; |
2746 | __le32 bt_prio_defer_cnt; |
2747 | __le32 bt_prio_kill_cnt; |
2748 | __le32 few_bytes_cnt; |
2749 | __le32 cts_timeout; |
2750 | __le32 ack_timeout; |
2751 | __le32 expected_ack_cnt; |
2752 | __le32 actual_ack_cnt; |
2753 | } __packed; |
2754 | |
2755 | struct stats_dbg { |
2756 | __le32 burst_check; |
2757 | __le32 burst_count; |
2758 | __le32 wait_for_silence_timeout_cnt; |
2759 | __le32 reserved[3]; |
2760 | } __packed; |
2761 | |
2762 | struct iwl39_stats_div { |
2763 | __le32 tx_on_a; |
2764 | __le32 tx_on_b; |
2765 | __le32 exec_time; |
2766 | __le32 probe_time; |
2767 | } __packed; |
2768 | |
2769 | struct iwl39_stats_general { |
2770 | __le32 temperature; |
2771 | struct stats_dbg dbg; |
2772 | __le32 sleep_time; |
2773 | __le32 slots_out; |
2774 | __le32 slots_idle; |
2775 | __le32 ttl_timestamp; |
2776 | struct iwl39_stats_div div; |
2777 | } __packed; |
2778 | |
2779 | struct stats_rx_phy { |
2780 | __le32 ina_cnt; |
2781 | __le32 fina_cnt; |
2782 | __le32 plcp_err; |
2783 | __le32 crc32_err; |
2784 | __le32 overrun_err; |
2785 | __le32 early_overrun_err; |
2786 | __le32 crc32_good; |
2787 | __le32 false_alarm_cnt; |
2788 | __le32 fina_sync_err_cnt; |
2789 | __le32 sfd_timeout; |
2790 | __le32 fina_timeout; |
2791 | __le32 unresponded_rts; |
2792 | __le32 rxe_frame_limit_overrun; |
2793 | __le32 sent_ack_cnt; |
2794 | __le32 sent_cts_cnt; |
2795 | __le32 sent_ba_rsp_cnt; |
2796 | __le32 dsp_self_kill; |
2797 | __le32 mh_format_err; |
2798 | __le32 re_acq_main_rssi_sum; |
2799 | __le32 reserved3; |
2800 | } __packed; |
2801 | |
2802 | struct stats_rx_ht_phy { |
2803 | __le32 plcp_err; |
2804 | __le32 overrun_err; |
2805 | __le32 early_overrun_err; |
2806 | __le32 crc32_good; |
2807 | __le32 crc32_err; |
2808 | __le32 mh_format_err; |
2809 | __le32 agg_crc32_good; |
2810 | __le32 agg_mpdu_cnt; |
2811 | __le32 agg_cnt; |
2812 | __le32 unsupport_mcs; |
2813 | } __packed; |
2814 | |
2815 | #define INTERFERENCE_DATA_AVAILABLE cpu_to_le32(1) |
2816 | |
2817 | struct stats_rx_non_phy { |
2818 | __le32 bogus_cts; /* CTS received when not expecting CTS */ |
2819 | __le32 bogus_ack; /* ACK received when not expecting ACK */ |
2820 | __le32 non_bssid_frames; /* number of frames with BSSID that |
2821 | * doesn't belong to the STA BSSID */ |
2822 | __le32 filtered_frames; /* count frames that were dumped in the |
2823 | * filtering process */ |
2824 | __le32 non_channel_beacons; /* beacons with our bss id but not on |
2825 | * our serving channel */ |
2826 | __le32 channel_beacons; /* beacons with our bss id and in our |
2827 | * serving channel */ |
2828 | __le32 num_missed_bcon; /* number of missed beacons */ |
2829 | __le32 adc_rx_saturation_time; /* count in 0.8us units the time the |
2830 | * ADC was in saturation */ |
2831 | __le32 ina_detection_search_time; /* total time (in 0.8us) searched |
2832 | * for INA */ |
2833 | __le32 ; /* RSSI silence after beacon frame */ |
2834 | __le32 ; /* RSSI silence after beacon frame */ |
2835 | __le32 ; /* RSSI silence after beacon frame */ |
2836 | __le32 interference_data_flag; /* flag for interference data |
2837 | * availability. 1 when data is |
2838 | * available. */ |
2839 | __le32 channel_load; /* counts RX Enable time in uSec */ |
2840 | __le32 dsp_false_alarms; /* DSP false alarm (both OFDM |
2841 | * and CCK) counter */ |
2842 | __le32 ; |
2843 | __le32 ; |
2844 | __le32 ; |
2845 | __le32 beacon_energy_a; |
2846 | __le32 beacon_energy_b; |
2847 | __le32 beacon_energy_c; |
2848 | } __packed; |
2849 | |
2850 | struct stats_rx { |
2851 | struct stats_rx_phy ofdm; |
2852 | struct stats_rx_phy cck; |
2853 | struct stats_rx_non_phy general; |
2854 | struct stats_rx_ht_phy ofdm_ht; |
2855 | } __packed; |
2856 | |
2857 | /** |
2858 | * struct stats_tx_power - current tx power |
2859 | * |
2860 | * @ant_a: current tx power on chain a in 1/2 dB step |
2861 | * @ant_b: current tx power on chain b in 1/2 dB step |
2862 | * @ant_c: current tx power on chain c in 1/2 dB step |
2863 | */ |
2864 | struct stats_tx_power { |
2865 | u8 ant_a; |
2866 | u8 ant_b; |
2867 | u8 ant_c; |
2868 | u8 reserved; |
2869 | } __packed; |
2870 | |
2871 | struct stats_tx_non_phy_agg { |
2872 | __le32 ba_timeout; |
2873 | __le32 ba_reschedule_frames; |
2874 | __le32 scd_query_agg_frame_cnt; |
2875 | __le32 scd_query_no_agg; |
2876 | __le32 scd_query_agg; |
2877 | __le32 scd_query_mismatch; |
2878 | __le32 frame_not_ready; |
2879 | __le32 underrun; |
2880 | __le32 bt_prio_kill; |
2881 | __le32 rx_ba_rsp_cnt; |
2882 | } __packed; |
2883 | |
2884 | struct stats_tx { |
2885 | __le32 preamble_cnt; |
2886 | __le32 rx_detected_cnt; |
2887 | __le32 bt_prio_defer_cnt; |
2888 | __le32 bt_prio_kill_cnt; |
2889 | __le32 few_bytes_cnt; |
2890 | __le32 cts_timeout; |
2891 | __le32 ack_timeout; |
2892 | __le32 expected_ack_cnt; |
2893 | __le32 actual_ack_cnt; |
2894 | __le32 dump_msdu_cnt; |
2895 | __le32 burst_abort_next_frame_mismatch_cnt; |
2896 | __le32 burst_abort_missing_next_frame_cnt; |
2897 | __le32 cts_timeout_collision; |
2898 | __le32 ack_or_ba_timeout_collision; |
2899 | struct stats_tx_non_phy_agg agg; |
2900 | |
2901 | __le32 reserved1; |
2902 | } __packed; |
2903 | |
2904 | struct stats_div { |
2905 | __le32 tx_on_a; |
2906 | __le32 tx_on_b; |
2907 | __le32 exec_time; |
2908 | __le32 probe_time; |
2909 | __le32 reserved1; |
2910 | __le32 reserved2; |
2911 | } __packed; |
2912 | |
2913 | struct stats_general_common { |
2914 | __le32 temperature; /* radio temperature */ |
2915 | struct stats_dbg dbg; |
2916 | __le32 sleep_time; |
2917 | __le32 slots_out; |
2918 | __le32 slots_idle; |
2919 | __le32 ttl_timestamp; |
2920 | struct stats_div div; |
2921 | __le32 rx_enable_counter; |
2922 | /* |
2923 | * num_of_sos_states: |
2924 | * count the number of times we have to re-tune |
2925 | * in order to get out of bad PHY status |
2926 | */ |
2927 | __le32 num_of_sos_states; |
2928 | } __packed; |
2929 | |
2930 | struct stats_general { |
2931 | struct stats_general_common common; |
2932 | __le32 reserved2; |
2933 | __le32 reserved3; |
2934 | } __packed; |
2935 | |
2936 | #define UCODE_STATS_CLEAR_MSK (0x1 << 0) |
2937 | #define UCODE_STATS_FREQUENCY_MSK (0x1 << 1) |
2938 | #define UCODE_STATS_NARROW_BAND_MSK (0x1 << 2) |
2939 | |
2940 | /* |
2941 | * C_STATS = 0x9c, |
2942 | * all devices identical. |
2943 | * |
2944 | * This command triggers an immediate response containing uCode stats. |
2945 | * The response is in the same format as N_STATS 0x9d, below. |
2946 | * |
2947 | * If the CLEAR_STATS configuration flag is set, uCode will clear its |
2948 | * internal copy of the stats (counters) after issuing the response. |
2949 | * This flag does not affect N_STATSs after beacons (see below). |
2950 | * |
2951 | * If the DISABLE_NOTIF configuration flag is set, uCode will not issue |
2952 | * N_STATSs after received beacons (see below). This flag |
2953 | * does not affect the response to the C_STATS 0x9c itself. |
2954 | */ |
2955 | #define IL_STATS_CONF_CLEAR_STATS cpu_to_le32(0x1) /* see above */ |
2956 | #define IL_STATS_CONF_DISABLE_NOTIF cpu_to_le32(0x2) /* see above */ |
2957 | struct il_stats_cmd { |
2958 | __le32 configuration_flags; /* IL_STATS_CONF_* */ |
2959 | } __packed; |
2960 | |
2961 | /* |
2962 | * N_STATS = 0x9d (notification only, not a command) |
2963 | * |
2964 | * By default, uCode issues this notification after receiving a beacon |
2965 | * while associated. To disable this behavior, set DISABLE_NOTIF flag in the |
2966 | * C_STATS 0x9c, above. |
2967 | * |
2968 | * Statistics counters continue to increment beacon after beacon, but are |
2969 | * cleared when changing channels or when driver issues C_STATS |
2970 | * 0x9c with CLEAR_STATS bit set (see above). |
2971 | * |
2972 | * uCode also issues this notification during scans. uCode clears stats |
2973 | * appropriately so that each notification contains stats for only the |
2974 | * one channel that has just been scanned. |
2975 | */ |
2976 | #define STATS_REPLY_FLG_BAND_24G_MSK cpu_to_le32(0x2) |
2977 | #define STATS_REPLY_FLG_HT40_MODE_MSK cpu_to_le32(0x8) |
2978 | |
2979 | struct il3945_notif_stats { |
2980 | __le32 flag; |
2981 | struct iwl39_stats_rx rx; |
2982 | struct iwl39_stats_tx tx; |
2983 | struct iwl39_stats_general general; |
2984 | } __packed; |
2985 | |
2986 | struct il_notif_stats { |
2987 | __le32 flag; |
2988 | struct stats_rx rx; |
2989 | struct stats_tx tx; |
2990 | struct stats_general general; |
2991 | } __packed; |
2992 | |
2993 | /* |
2994 | * N_MISSED_BEACONS = 0xa2 (notification only, not a command) |
2995 | * |
2996 | * uCode send N_MISSED_BEACONS to driver when detect beacon missed |
2997 | * in regardless of how many missed beacons, which mean when driver receive the |
2998 | * notification, inside the command, it can find all the beacons information |
2999 | * which include number of total missed beacons, number of consecutive missed |
3000 | * beacons, number of beacons received and number of beacons expected to |
3001 | * receive. |
3002 | * |
3003 | * If uCode detected consecutive_missed_beacons > 5, it will reset the radio |
3004 | * in order to bring the radio/PHY back to working state; which has no relation |
3005 | * to when driver will perform sensitivity calibration. |
3006 | * |
3007 | * Driver should set it own missed_beacon_threshold to decide when to perform |
3008 | * sensitivity calibration based on number of consecutive missed beacons in |
3009 | * order to improve overall performance, especially in noisy environment. |
3010 | * |
3011 | */ |
3012 | |
3013 | #define IL_MISSED_BEACON_THRESHOLD_MIN (1) |
3014 | #define IL_MISSED_BEACON_THRESHOLD_DEF (5) |
3015 | #define IL_MISSED_BEACON_THRESHOLD_MAX IL_MISSED_BEACON_THRESHOLD_DEF |
3016 | |
3017 | struct il_missed_beacon_notif { |
3018 | __le32 consecutive_missed_beacons; |
3019 | __le32 total_missed_becons; |
3020 | __le32 num_expected_beacons; |
3021 | __le32 num_recvd_beacons; |
3022 | } __packed; |
3023 | |
3024 | /****************************************************************************** |
3025 | * (11) |
3026 | * Rx Calibration Commands: |
3027 | * |
3028 | * With the uCode used for open source drivers, most Tx calibration (except |
3029 | * for Tx Power) and most Rx calibration is done by uCode during the |
3030 | * "initialize" phase of uCode boot. Driver must calibrate only: |
3031 | * |
3032 | * 1) Tx power (depends on temperature), described elsewhere |
3033 | * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas) |
3034 | * 3) Receiver sensitivity (to optimize signal detection) |
3035 | * |
3036 | *****************************************************************************/ |
3037 | |
3038 | /** |
3039 | * C_SENSITIVITY = 0xa8 (command, has simple generic response) |
3040 | * |
3041 | * This command sets up the Rx signal detector for a sensitivity level that |
3042 | * is high enough to lock onto all signals within the associated network, |
3043 | * but low enough to ignore signals that are below a certain threshold, so as |
3044 | * not to have too many "false alarms". False alarms are signals that the |
3045 | * Rx DSP tries to lock onto, but then discards after determining that they |
3046 | * are noise. |
3047 | * |
3048 | * The optimum number of false alarms is between 5 and 50 per 200 TUs |
3049 | * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e. |
3050 | * time listening, not transmitting). Driver must adjust sensitivity so that |
3051 | * the ratio of actual false alarms to actual Rx time falls within this range. |
3052 | * |
3053 | * While associated, uCode delivers N_STATSs after each |
3054 | * received beacon. These provide information to the driver to analyze the |
3055 | * sensitivity. Don't analyze stats that come in from scanning, or any |
3056 | * other non-associated-network source. Pertinent stats include: |
3057 | * |
3058 | * From "general" stats (struct stats_rx_non_phy): |
3059 | * |
3060 | * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level) |
3061 | * Measure of energy of desired signal. Used for establishing a level |
3062 | * below which the device does not detect signals. |
3063 | * |
3064 | * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB) |
3065 | * Measure of background noise in silent period after beacon. |
3066 | * |
3067 | * channel_load |
3068 | * uSecs of actual Rx time during beacon period (varies according to |
3069 | * how much time was spent transmitting). |
3070 | * |
3071 | * From "cck" and "ofdm" stats (struct stats_rx_phy), separately: |
3072 | * |
3073 | * false_alarm_cnt |
3074 | * Signal locks abandoned early (before phy-level header). |
3075 | * |
3076 | * plcp_err |
3077 | * Signal locks abandoned late (during phy-level header). |
3078 | * |
3079 | * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from |
3080 | * beacon to beacon, i.e. each value is an accumulation of all errors |
3081 | * before and including the latest beacon. Values will wrap around to 0 |
3082 | * after counting up to 2^32 - 1. Driver must differentiate vs. |
3083 | * previous beacon's values to determine # false alarms in the current |
3084 | * beacon period. |
3085 | * |
3086 | * Total number of false alarms = false_alarms + plcp_errs |
3087 | * |
3088 | * For OFDM, adjust the following table entries in struct il_sensitivity_cmd |
3089 | * (notice that the start points for OFDM are at or close to settings for |
3090 | * maximum sensitivity): |
3091 | * |
3092 | * START / MIN / MAX |
3093 | * HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX 90 / 85 / 120 |
3094 | * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX 170 / 170 / 210 |
3095 | * HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX 105 / 105 / 140 |
3096 | * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX 220 / 220 / 270 |
3097 | * |
3098 | * If actual rate of OFDM false alarms (+ plcp_errors) is too high |
3099 | * (greater than 50 for each 204.8 msecs listening), reduce sensitivity |
3100 | * by *adding* 1 to all 4 of the table entries above, up to the max for |
3101 | * each entry. Conversely, if false alarm rate is too low (less than 5 |
3102 | * for each 204.8 msecs listening), *subtract* 1 from each entry to |
3103 | * increase sensitivity. |
3104 | * |
3105 | * For CCK sensitivity, keep track of the following: |
3106 | * |
3107 | * 1). 20-beacon history of maximum background noise, indicated by |
3108 | * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the |
3109 | * 3 receivers. For any given beacon, the "silence reference" is |
3110 | * the maximum of last 60 samples (20 beacons * 3 receivers). |
3111 | * |
3112 | * 2). 10-beacon history of strongest signal level, as indicated |
3113 | * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers, |
3114 | * i.e. the strength of the signal through the best receiver at the |
3115 | * moment. These measurements are "upside down", with lower values |
3116 | * for stronger signals, so max energy will be *minimum* value. |
3117 | * |
3118 | * Then for any given beacon, the driver must determine the *weakest* |
3119 | * of the strongest signals; this is the minimum level that needs to be |
3120 | * successfully detected, when using the best receiver at the moment. |
3121 | * "Max cck energy" is the maximum (higher value means lower energy!) |
3122 | * of the last 10 minima. Once this is determined, driver must add |
3123 | * a little margin by adding "6" to it. |
3124 | * |
3125 | * 3). Number of consecutive beacon periods with too few false alarms. |
3126 | * Reset this to 0 at the first beacon period that falls within the |
3127 | * "good" range (5 to 50 false alarms per 204.8 milliseconds rx). |
3128 | * |
3129 | * Then, adjust the following CCK table entries in struct il_sensitivity_cmd |
3130 | * (notice that the start points for CCK are at maximum sensitivity): |
3131 | * |
3132 | * START / MIN / MAX |
3133 | * HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX 125 / 125 / 200 |
3134 | * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX 200 / 200 / 400 |
3135 | * HD_MIN_ENERGY_CCK_DET_IDX 100 / 0 / 100 |
3136 | * |
3137 | * If actual rate of CCK false alarms (+ plcp_errors) is too high |
3138 | * (greater than 50 for each 204.8 msecs listening), method for reducing |
3139 | * sensitivity is: |
3140 | * |
3141 | * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, |
3142 | * up to max 400. |
3143 | * |
3144 | * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is < 160, |
3145 | * sensitivity has been reduced a significant amount; bring it up to |
3146 | * a moderate 161. Otherwise, *add* 3, up to max 200. |
3147 | * |
3148 | * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is > 160, |
3149 | * sensitivity has been reduced only a moderate or small amount; |
3150 | * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_IDX, |
3151 | * down to min 0. Otherwise (if gain has been significantly reduced), |
3152 | * don't change the HD_MIN_ENERGY_CCK_DET_IDX value. |
3153 | * |
3154 | * b) Save a snapshot of the "silence reference". |
3155 | * |
3156 | * If actual rate of CCK false alarms (+ plcp_errors) is too low |
3157 | * (less than 5 for each 204.8 msecs listening), method for increasing |
3158 | * sensitivity is used only if: |
3159 | * |
3160 | * 1a) Previous beacon did not have too many false alarms |
3161 | * 1b) AND difference between previous "silence reference" and current |
3162 | * "silence reference" (prev - current) is 2 or more, |
3163 | * OR 2) 100 or more consecutive beacon periods have had rate of |
3164 | * less than 5 false alarms per 204.8 milliseconds rx time. |
3165 | * |
3166 | * Method for increasing sensitivity: |
3167 | * |
3168 | * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX, |
3169 | * down to min 125. |
3170 | * |
3171 | * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, |
3172 | * down to min 200. |
3173 | * |
3174 | * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_IDX, up to max 100. |
3175 | * |
3176 | * If actual rate of CCK false alarms (+ plcp_errors) is within good range |
3177 | * (between 5 and 50 for each 204.8 msecs listening): |
3178 | * |
3179 | * 1) Save a snapshot of the silence reference. |
3180 | * |
3181 | * 2) If previous beacon had too many CCK false alarms (+ plcp_errors), |
3182 | * give some extra margin to energy threshold by *subtracting* 8 |
3183 | * from value in HD_MIN_ENERGY_CCK_DET_IDX. |
3184 | * |
3185 | * For all cases (too few, too many, good range), make sure that the CCK |
3186 | * detection threshold (energy) is below the energy level for robust |
3187 | * detection over the past 10 beacon periods, the "Max cck energy". |
3188 | * Lower values mean higher energy; this means making sure that the value |
3189 | * in HD_MIN_ENERGY_CCK_DET_IDX is at or *above* "Max cck energy". |
3190 | * |
3191 | */ |
3192 | |
3193 | /* |
3194 | * Table entries in C_SENSITIVITY (struct il_sensitivity_cmd) |
3195 | */ |
3196 | #define HD_TBL_SIZE (11) /* number of entries */ |
3197 | #define HD_MIN_ENERGY_CCK_DET_IDX (0) /* table idxes */ |
3198 | #define HD_MIN_ENERGY_OFDM_DET_IDX (1) |
3199 | #define HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX (2) |
3200 | #define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX (3) |
3201 | #define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX (4) |
3202 | #define HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX (5) |
3203 | #define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX (6) |
3204 | #define HD_BARKER_CORR_TH_ADD_MIN_IDX (7) |
3205 | #define HD_BARKER_CORR_TH_ADD_MIN_MRC_IDX (8) |
3206 | #define HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX (9) |
3207 | #define HD_OFDM_ENERGY_TH_IN_IDX (10) |
3208 | |
3209 | /* Control field in struct il_sensitivity_cmd */ |
3210 | #define C_SENSITIVITY_CONTROL_DEFAULT_TBL cpu_to_le16(0) |
3211 | #define C_SENSITIVITY_CONTROL_WORK_TBL cpu_to_le16(1) |
3212 | |
3213 | /** |
3214 | * struct il_sensitivity_cmd |
3215 | * @control: (1) updates working table, (0) updates default table |
3216 | * @table: energy threshold values, use HD_* as idx into table |
3217 | * |
3218 | * Always use "1" in "control" to update uCode's working table and DSP. |
3219 | */ |
3220 | struct il_sensitivity_cmd { |
3221 | __le16 control; /* always use "1" */ |
3222 | __le16 table[HD_TBL_SIZE]; /* use HD_* as idx */ |
3223 | } __packed; |
3224 | |
3225 | /** |
3226 | * C_PHY_CALIBRATION = 0xb0 (command, has simple generic response) |
3227 | * |
3228 | * This command sets the relative gains of 4965 device's 3 radio receiver chains. |
3229 | * |
3230 | * After the first association, driver should accumulate signal and noise |
3231 | * stats from the N_STATSs that follow the first 20 |
3232 | * beacons from the associated network (don't collect stats that come |
3233 | * in from scanning, or any other non-network source). |
3234 | * |
3235 | * DISCONNECTED ANTENNA: |
3236 | * |
3237 | * Driver should determine which antennas are actually connected, by comparing |
3238 | * average beacon signal levels for the 3 Rx chains. Accumulate (add) the |
3239 | * following values over 20 beacons, one accumulator for each of the chains |
3240 | * a/b/c, from struct stats_rx_non_phy: |
3241 | * |
3242 | * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB) |
3243 | * |
3244 | * Find the strongest signal from among a/b/c. Compare the other two to the |
3245 | * strongest. If any signal is more than 15 dB (times 20, unless you |
3246 | * divide the accumulated values by 20) below the strongest, the driver |
3247 | * considers that antenna to be disconnected, and should not try to use that |
3248 | * antenna/chain for Rx or Tx. If both A and B seem to be disconnected, |
3249 | * driver should declare the stronger one as connected, and attempt to use it |
3250 | * (A and B are the only 2 Tx chains!). |
3251 | * |
3252 | * |
3253 | * RX BALANCE: |
3254 | * |
3255 | * Driver should balance the 3 receivers (but just the ones that are connected |
3256 | * to antennas, see above) for gain, by comparing the average signal levels |
3257 | * detected during the silence after each beacon (background noise). |
3258 | * Accumulate (add) the following values over 20 beacons, one accumulator for |
3259 | * each of the chains a/b/c, from struct stats_rx_non_phy: |
3260 | * |
3261 | * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB) |
3262 | * |
3263 | * Find the weakest background noise level from among a/b/c. This Rx chain |
3264 | * will be the reference, with 0 gain adjustment. Attenuate other channels by |
3265 | * finding noise difference: |
3266 | * |
3267 | * (accum_noise[i] - accum_noise[reference]) / 30 |
3268 | * |
3269 | * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB. |
3270 | * For use in diff_gain_[abc] fields of struct il_calibration_cmd, the |
3271 | * driver should limit the difference results to a range of 0-3 (0-4.5 dB), |
3272 | * and set bit 2 to indicate "reduce gain". The value for the reference |
3273 | * (weakest) chain should be "0". |
3274 | * |
3275 | * diff_gain_[abc] bit fields: |
3276 | * 2: (1) reduce gain, (0) increase gain |
3277 | * 1-0: amount of gain, units of 1.5 dB |
3278 | */ |
3279 | |
3280 | /* Phy calibration command for series */ |
3281 | /* The default calibrate table size if not specified by firmware */ |
3282 | #define IL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE 18 |
3283 | enum { |
3284 | IL_PHY_CALIBRATE_DIFF_GAIN_CMD = 7, |
3285 | IL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE = 19, |
3286 | }; |
3287 | |
3288 | #define IL_MAX_PHY_CALIBRATE_TBL_SIZE (253) |
3289 | |
3290 | struct il_calib_hdr { |
3291 | u8 op_code; |
3292 | u8 first_group; |
3293 | u8 groups_num; |
3294 | u8 data_valid; |
3295 | } __packed; |
3296 | |
3297 | /* IL_PHY_CALIBRATE_DIFF_GAIN_CMD (7) */ |
3298 | struct il_calib_diff_gain_cmd { |
3299 | struct il_calib_hdr hdr; |
3300 | s8 diff_gain_a; /* see above */ |
3301 | s8 diff_gain_b; |
3302 | s8 diff_gain_c; |
3303 | u8 reserved1; |
3304 | } __packed; |
3305 | |
3306 | /****************************************************************************** |
3307 | * (12) |
3308 | * Miscellaneous Commands: |
3309 | * |
3310 | *****************************************************************************/ |
3311 | |
3312 | /* |
3313 | * LEDs Command & Response |
3314 | * C_LEDS = 0x48 (command, has simple generic response) |
3315 | * |
3316 | * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field), |
3317 | * this command turns it on or off, or sets up a periodic blinking cycle. |
3318 | */ |
3319 | struct il_led_cmd { |
3320 | __le32 interval; /* "interval" in uSec */ |
3321 | u8 id; /* 1: Activity, 2: Link, 3: Tech */ |
3322 | u8 off; /* # intervals off while blinking; |
3323 | * "0", with >0 "on" value, turns LED on */ |
3324 | u8 on; /* # intervals on while blinking; |
3325 | * "0", regardless of "off", turns LED off */ |
3326 | u8 reserved; |
3327 | } __packed; |
3328 | |
3329 | /****************************************************************************** |
3330 | * (13) |
3331 | * Union of all expected notifications/responses: |
3332 | * |
3333 | *****************************************************************************/ |
3334 | |
3335 | #define IL_RX_FRAME_SIZE_MSK 0x00003fff |
3336 | |
3337 | struct il_rx_pkt { |
3338 | /* |
3339 | * The first 4 bytes of the RX frame header contain both the RX frame |
3340 | * size and some flags. |
3341 | * Bit fields: |
3342 | * 31: flag flush RB request |
3343 | * 30: flag ignore TC (terminal counter) request |
3344 | * 29: flag fast IRQ request |
3345 | * 28-14: Reserved |
3346 | * 13-00: RX frame size |
3347 | */ |
3348 | __le32 len_n_flags; |
3349 | struct il_cmd_header hdr; |
3350 | union { |
3351 | struct il3945_rx_frame rx_frame; |
3352 | struct il3945_tx_resp tx_resp; |
3353 | struct il3945_beacon_notif beacon_status; |
3354 | |
3355 | struct il_alive_resp alive_frame; |
3356 | struct il_spectrum_notification spectrum_notif; |
3357 | struct il_csa_notification csa_notif; |
3358 | struct il_error_resp err_resp; |
3359 | struct il_card_state_notif card_state_notif; |
3360 | struct il_add_sta_resp add_sta; |
3361 | struct il_rem_sta_resp rem_sta; |
3362 | struct il_sleep_notification sleep_notif; |
3363 | struct il_spectrum_resp spectrum; |
3364 | struct il_notif_stats stats; |
3365 | struct il_compressed_ba_resp compressed_ba; |
3366 | struct il_missed_beacon_notif missed_beacon; |
3367 | __le32 status; |
3368 | DECLARE_FLEX_ARRAY(u8, raw); |
3369 | } u; |
3370 | } __packed; |
3371 | |
3372 | #endif /* __il_commands_h__ */ |
3373 | |