iwl-commands.h 104 KB

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  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 - 2008 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. * James P. Ketrenos <ipw2100-admin@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 - 2008 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. * Please use this file (iwl-commands.h) only for uCode API definitions.
  65. * Please use iwl-4965-hw.h for hardware-related definitions.
  66. * Please use iwl-dev.h for driver implementation definitions.
  67. */
  68. #ifndef __iwl4965_commands_h__
  69. #define __iwl4965_commands_h__
  70. enum {
  71. REPLY_ALIVE = 0x1,
  72. REPLY_ERROR = 0x2,
  73. /* RXON and QOS commands */
  74. REPLY_RXON = 0x10,
  75. REPLY_RXON_ASSOC = 0x11,
  76. REPLY_QOS_PARAM = 0x13,
  77. REPLY_RXON_TIMING = 0x14,
  78. /* Multi-Station support */
  79. REPLY_ADD_STA = 0x18,
  80. REPLY_REMOVE_STA = 0x19, /* not used */
  81. REPLY_REMOVE_ALL_STA = 0x1a, /* not used */
  82. /* Security */
  83. REPLY_WEPKEY = 0x20,
  84. /* RX, TX, LEDs */
  85. REPLY_TX = 0x1c,
  86. REPLY_RATE_SCALE = 0x47, /* 3945 only */
  87. REPLY_LEDS_CMD = 0x48,
  88. REPLY_TX_LINK_QUALITY_CMD = 0x4e, /* 4965 only */
  89. /* WiMAX coexistence */
  90. COEX_PRIORITY_TABLE_CMD = 0x5a, /*5000 only */
  91. COEX_MEDIUM_NOTIFICATION = 0x5b,
  92. COEX_EVENT_CMD = 0x5c,
  93. /* Calibration */
  94. CALIBRATION_CFG_CMD = 0x65,
  95. CALIBRATION_RES_NOTIFICATION = 0x66,
  96. CALIBRATION_COMPLETE_NOTIFICATION = 0x67,
  97. /* 802.11h related */
  98. RADAR_NOTIFICATION = 0x70, /* not used */
  99. REPLY_QUIET_CMD = 0x71, /* not used */
  100. REPLY_CHANNEL_SWITCH = 0x72,
  101. CHANNEL_SWITCH_NOTIFICATION = 0x73,
  102. REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74,
  103. SPECTRUM_MEASURE_NOTIFICATION = 0x75,
  104. /* Power Management */
  105. POWER_TABLE_CMD = 0x77,
  106. PM_SLEEP_NOTIFICATION = 0x7A,
  107. PM_DEBUG_STATISTIC_NOTIFIC = 0x7B,
  108. /* Scan commands and notifications */
  109. REPLY_SCAN_CMD = 0x80,
  110. REPLY_SCAN_ABORT_CMD = 0x81,
  111. SCAN_START_NOTIFICATION = 0x82,
  112. SCAN_RESULTS_NOTIFICATION = 0x83,
  113. SCAN_COMPLETE_NOTIFICATION = 0x84,
  114. /* IBSS/AP commands */
  115. BEACON_NOTIFICATION = 0x90,
  116. REPLY_TX_BEACON = 0x91,
  117. WHO_IS_AWAKE_NOTIFICATION = 0x94, /* not used */
  118. /* Miscellaneous commands */
  119. QUIET_NOTIFICATION = 0x96, /* not used */
  120. REPLY_TX_PWR_TABLE_CMD = 0x97,
  121. REPLY_TX_POWER_DBM_CMD = 0x98,
  122. MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
  123. /* Bluetooth device coexistance config command */
  124. REPLY_BT_CONFIG = 0x9b,
  125. /* Statistics */
  126. REPLY_STATISTICS_CMD = 0x9c,
  127. STATISTICS_NOTIFICATION = 0x9d,
  128. /* RF-KILL commands and notifications */
  129. REPLY_CARD_STATE_CMD = 0xa0,
  130. CARD_STATE_NOTIFICATION = 0xa1,
  131. /* Missed beacons notification */
  132. MISSED_BEACONS_NOTIFICATION = 0xa2,
  133. REPLY_CT_KILL_CONFIG_CMD = 0xa4,
  134. SENSITIVITY_CMD = 0xa8,
  135. REPLY_PHY_CALIBRATION_CMD = 0xb0,
  136. REPLY_RX_PHY_CMD = 0xc0,
  137. REPLY_RX_MPDU_CMD = 0xc1,
  138. REPLY_RX = 0xc3,
  139. REPLY_COMPRESSED_BA = 0xc5,
  140. REPLY_MAX = 0xff
  141. };
  142. /******************************************************************************
  143. * (0)
  144. * Commonly used structures and definitions:
  145. * Command header, rate_n_flags, txpower
  146. *
  147. *****************************************************************************/
  148. /* iwl_cmd_header flags value */
  149. #define IWL_CMD_FAILED_MSK 0x40
  150. #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f)
  151. #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
  152. #define SEQ_TO_INDEX(s) ((s) & 0xff)
  153. #define INDEX_TO_SEQ(i) ((i) & 0xff)
  154. #define SEQ_HUGE_FRAME __constant_cpu_to_le16(0x4000)
  155. #define SEQ_RX_FRAME __constant_cpu_to_le16(0x8000)
  156. /**
  157. * struct iwl_cmd_header
  158. *
  159. * This header format appears in the beginning of each command sent from the
  160. * driver, and each response/notification received from uCode.
  161. */
  162. struct iwl_cmd_header {
  163. u8 cmd; /* Command ID: REPLY_RXON, etc. */
  164. u8 flags; /* 0:5 reserved, 6 abort, 7 internal */
  165. /*
  166. * The driver sets up the sequence number to values of its chosing.
  167. * uCode does not use this value, but passes it back to the driver
  168. * when sending the response to each driver-originated command, so
  169. * the driver can match the response to the command. Since the values
  170. * don't get used by uCode, the driver may set up an arbitrary format.
  171. *
  172. * There is one exception: uCode sets bit 15 when it originates
  173. * the response/notification, i.e. when the response/notification
  174. * is not a direct response to a command sent by the driver. For
  175. * example, uCode issues REPLY_3945_RX when it sends a received frame
  176. * to the driver; it is not a direct response to any driver command.
  177. *
  178. * The Linux driver uses the following format:
  179. *
  180. * 0:7 tfd index - position within TX queue
  181. * 8:12 TX queue id
  182. * 13 reserved
  183. * 14 huge - driver sets this to indicate command is in the
  184. * 'huge' storage at the end of the command buffers
  185. * 15 unsolicited RX or uCode-originated notification
  186. */
  187. __le16 sequence;
  188. /* command or response/notification data follows immediately */
  189. u8 data[0];
  190. } __attribute__ ((packed));
  191. /**
  192. * 4965 rate_n_flags bit fields
  193. *
  194. * rate_n_flags format is used in following 4965 commands:
  195. * REPLY_RX (response only)
  196. * REPLY_TX (both command and response)
  197. * REPLY_TX_LINK_QUALITY_CMD
  198. *
  199. * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"):
  200. * 2-0: 0) 6 Mbps
  201. * 1) 12 Mbps
  202. * 2) 18 Mbps
  203. * 3) 24 Mbps
  204. * 4) 36 Mbps
  205. * 5) 48 Mbps
  206. * 6) 54 Mbps
  207. * 7) 60 Mbps
  208. *
  209. * 3: 0) Single stream (SISO)
  210. * 1) Dual stream (MIMO)
  211. *
  212. * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps FAT duplicate data
  213. *
  214. * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"):
  215. * 3-0: 0xD) 6 Mbps
  216. * 0xF) 9 Mbps
  217. * 0x5) 12 Mbps
  218. * 0x7) 18 Mbps
  219. * 0x9) 24 Mbps
  220. * 0xB) 36 Mbps
  221. * 0x1) 48 Mbps
  222. * 0x3) 54 Mbps
  223. *
  224. * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"):
  225. * 3-0: 10) 1 Mbps
  226. * 20) 2 Mbps
  227. * 55) 5.5 Mbps
  228. * 110) 11 Mbps
  229. */
  230. #define RATE_MCS_CODE_MSK 0x7
  231. #define RATE_MCS_MIMO_POS 3
  232. #define RATE_MCS_MIMO_MSK 0x8
  233. #define RATE_MCS_HT_DUP_POS 5
  234. #define RATE_MCS_HT_DUP_MSK 0x20
  235. /* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */
  236. #define RATE_MCS_FLAGS_POS 8
  237. #define RATE_MCS_HT_POS 8
  238. #define RATE_MCS_HT_MSK 0x100
  239. /* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
  240. #define RATE_MCS_CCK_POS 9
  241. #define RATE_MCS_CCK_MSK 0x200
  242. /* Bit 10: (1) Use Green Field preamble */
  243. #define RATE_MCS_GF_POS 10
  244. #define RATE_MCS_GF_MSK 0x400
  245. /* Bit 11: (1) Use 40Mhz FAT chnl width, (0) use 20 MHz legacy chnl width */
  246. #define RATE_MCS_FAT_POS 11
  247. #define RATE_MCS_FAT_MSK 0x800
  248. /* Bit 12: (1) Duplicate data on both 20MHz chnls. FAT (bit 11) must be set. */
  249. #define RATE_MCS_DUP_POS 12
  250. #define RATE_MCS_DUP_MSK 0x1000
  251. /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
  252. #define RATE_MCS_SGI_POS 13
  253. #define RATE_MCS_SGI_MSK 0x2000
  254. /**
  255. * rate_n_flags Tx antenna masks (4965 has 2 transmitters):
  256. * bit14:15 01 B inactive, A active
  257. * 10 B active, A inactive
  258. * 11 Both active
  259. */
  260. #define RATE_MCS_ANT_POS 14
  261. #define RATE_MCS_ANT_A_MSK 0x04000
  262. #define RATE_MCS_ANT_B_MSK 0x08000
  263. #define RATE_MCS_ANT_C_MSK 0x10000
  264. #define RATE_MCS_ANT_ABC_MSK 0x1C000
  265. #define RATE_MCS_ANT_INIT_IND 1
  266. #define POWER_TABLE_NUM_ENTRIES 33
  267. #define POWER_TABLE_NUM_HT_OFDM_ENTRIES 32
  268. #define POWER_TABLE_CCK_ENTRY 32
  269. /**
  270. * union iwl4965_tx_power_dual_stream
  271. *
  272. * Host format used for REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
  273. * Use __le32 version (struct tx_power_dual_stream) when building command.
  274. *
  275. * Driver provides radio gain and DSP attenuation settings to device in pairs,
  276. * one value for each transmitter chain. The first value is for transmitter A,
  277. * second for transmitter B.
  278. *
  279. * For SISO bit rates, both values in a pair should be identical.
  280. * For MIMO rates, one value may be different from the other,
  281. * in order to balance the Tx output between the two transmitters.
  282. *
  283. * See more details in doc for TXPOWER in iwl-4965-hw.h.
  284. */
  285. union iwl4965_tx_power_dual_stream {
  286. struct {
  287. u8 radio_tx_gain[2];
  288. u8 dsp_predis_atten[2];
  289. } s;
  290. u32 dw;
  291. };
  292. /**
  293. * struct tx_power_dual_stream
  294. *
  295. * Table entries in REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
  296. *
  297. * Same format as iwl_tx_power_dual_stream, but __le32
  298. */
  299. struct tx_power_dual_stream {
  300. __le32 dw;
  301. } __attribute__ ((packed));
  302. /**
  303. * struct iwl4965_tx_power_db
  304. *
  305. * Entire table within REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
  306. */
  307. struct iwl4965_tx_power_db {
  308. struct tx_power_dual_stream power_tbl[POWER_TABLE_NUM_ENTRIES];
  309. } __attribute__ ((packed));
  310. /**
  311. * Commad REPLY_TX_POWER_DBM_CMD = 0x98
  312. * struct iwl5000_tx_power_dbm_cmd
  313. */
  314. #define IWL50_TX_POWER_AUTO 0x7f
  315. #define IWL50_TX_POWER_NO_CLOSED (0x1 << 6)
  316. struct iwl5000_tx_power_dbm_cmd {
  317. s8 global_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */
  318. u8 flags;
  319. s8 srv_chan_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */
  320. u8 reserved;
  321. } __attribute__ ((packed));
  322. /******************************************************************************
  323. * (0a)
  324. * Alive and Error Commands & Responses:
  325. *
  326. *****************************************************************************/
  327. #define UCODE_VALID_OK __constant_cpu_to_le32(0x1)
  328. #define INITIALIZE_SUBTYPE (9)
  329. /*
  330. * ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
  331. *
  332. * uCode issues this "initialize alive" notification once the initialization
  333. * uCode image has completed its work, and is ready to load the runtime image.
  334. * This is the *first* "alive" notification that the driver will receive after
  335. * rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
  336. *
  337. * See comments documenting "BSM" (bootstrap state machine).
  338. *
  339. * For 4965, this notification contains important calibration data for
  340. * calculating txpower settings:
  341. *
  342. * 1) Power supply voltage indication. The voltage sensor outputs higher
  343. * values for lower voltage, and vice versa.
  344. *
  345. * 2) Temperature measurement parameters, for each of two channel widths
  346. * (20 MHz and 40 MHz) supported by the radios. Temperature sensing
  347. * is done via one of the receiver chains, and channel width influences
  348. * the results.
  349. *
  350. * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation,
  351. * for each of 5 frequency ranges.
  352. */
  353. struct iwl_init_alive_resp {
  354. u8 ucode_minor;
  355. u8 ucode_major;
  356. __le16 reserved1;
  357. u8 sw_rev[8];
  358. u8 ver_type;
  359. u8 ver_subtype; /* "9" for initialize alive */
  360. __le16 reserved2;
  361. __le32 log_event_table_ptr;
  362. __le32 error_event_table_ptr;
  363. __le32 timestamp;
  364. __le32 is_valid;
  365. /* calibration values from "initialize" uCode */
  366. __le32 voltage; /* signed, higher value is lower voltage */
  367. __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for FAT channel*/
  368. __le32 therm_r2[2]; /* signed */
  369. __le32 therm_r3[2]; /* signed */
  370. __le32 therm_r4[2]; /* signed */
  371. __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups,
  372. * 2 Tx chains */
  373. } __attribute__ ((packed));
  374. /**
  375. * REPLY_ALIVE = 0x1 (response only, not a command)
  376. *
  377. * uCode issues this "alive" notification once the runtime image is ready
  378. * to receive commands from the driver. This is the *second* "alive"
  379. * notification that the driver will receive after rebooting uCode;
  380. * this "alive" is indicated by subtype field != 9.
  381. *
  382. * See comments documenting "BSM" (bootstrap state machine).
  383. *
  384. * This response includes two pointers to structures within the device's
  385. * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
  386. *
  387. * 1) log_event_table_ptr indicates base of the event log. This traces
  388. * a 256-entry history of uCode execution within a circular buffer.
  389. * Its header format is:
  390. *
  391. * __le32 log_size; log capacity (in number of entries)
  392. * __le32 type; (1) timestamp with each entry, (0) no timestamp
  393. * __le32 wraps; # times uCode has wrapped to top of circular buffer
  394. * __le32 write_index; next circular buffer entry that uCode would fill
  395. *
  396. * The header is followed by the circular buffer of log entries. Entries
  397. * with timestamps have the following format:
  398. *
  399. * __le32 event_id; range 0 - 1500
  400. * __le32 timestamp; low 32 bits of TSF (of network, if associated)
  401. * __le32 data; event_id-specific data value
  402. *
  403. * Entries without timestamps contain only event_id and data.
  404. *
  405. * 2) error_event_table_ptr indicates base of the error log. This contains
  406. * information about any uCode error that occurs. For 4965, the format
  407. * of the error log is:
  408. *
  409. * __le32 valid; (nonzero) valid, (0) log is empty
  410. * __le32 error_id; type of error
  411. * __le32 pc; program counter
  412. * __le32 blink1; branch link
  413. * __le32 blink2; branch link
  414. * __le32 ilink1; interrupt link
  415. * __le32 ilink2; interrupt link
  416. * __le32 data1; error-specific data
  417. * __le32 data2; error-specific data
  418. * __le32 line; source code line of error
  419. * __le32 bcon_time; beacon timer
  420. * __le32 tsf_low; network timestamp function timer
  421. * __le32 tsf_hi; network timestamp function timer
  422. *
  423. * The Linux driver can print both logs to the system log when a uCode error
  424. * occurs.
  425. */
  426. struct iwl_alive_resp {
  427. u8 ucode_minor;
  428. u8 ucode_major;
  429. __le16 reserved1;
  430. u8 sw_rev[8];
  431. u8 ver_type;
  432. u8 ver_subtype; /* not "9" for runtime alive */
  433. __le16 reserved2;
  434. __le32 log_event_table_ptr; /* SRAM address for event log */
  435. __le32 error_event_table_ptr; /* SRAM address for error log */
  436. __le32 timestamp;
  437. __le32 is_valid;
  438. } __attribute__ ((packed));
  439. /*
  440. * REPLY_ERROR = 0x2 (response only, not a command)
  441. */
  442. struct iwl_error_resp {
  443. __le32 error_type;
  444. u8 cmd_id;
  445. u8 reserved1;
  446. __le16 bad_cmd_seq_num;
  447. __le32 error_info;
  448. __le64 timestamp;
  449. } __attribute__ ((packed));
  450. /******************************************************************************
  451. * (1)
  452. * RXON Commands & Responses:
  453. *
  454. *****************************************************************************/
  455. /*
  456. * Rx config defines & structure
  457. */
  458. /* rx_config device types */
  459. enum {
  460. RXON_DEV_TYPE_AP = 1,
  461. RXON_DEV_TYPE_ESS = 3,
  462. RXON_DEV_TYPE_IBSS = 4,
  463. RXON_DEV_TYPE_SNIFFER = 6,
  464. };
  465. #define RXON_RX_CHAIN_DRIVER_FORCE_MSK __constant_cpu_to_le16(0x1 << 0)
  466. #define RXON_RX_CHAIN_VALID_MSK __constant_cpu_to_le16(0x7 << 1)
  467. #define RXON_RX_CHAIN_VALID_POS (1)
  468. #define RXON_RX_CHAIN_FORCE_SEL_MSK __constant_cpu_to_le16(0x7 << 4)
  469. #define RXON_RX_CHAIN_FORCE_SEL_POS (4)
  470. #define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK __constant_cpu_to_le16(0x7 << 7)
  471. #define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7)
  472. #define RXON_RX_CHAIN_CNT_MSK __constant_cpu_to_le16(0x3 << 10)
  473. #define RXON_RX_CHAIN_CNT_POS (10)
  474. #define RXON_RX_CHAIN_MIMO_CNT_MSK __constant_cpu_to_le16(0x3 << 12)
  475. #define RXON_RX_CHAIN_MIMO_CNT_POS (12)
  476. #define RXON_RX_CHAIN_MIMO_FORCE_MSK __constant_cpu_to_le16(0x1 << 14)
  477. #define RXON_RX_CHAIN_MIMO_FORCE_POS (14)
  478. /* rx_config flags */
  479. /* band & modulation selection */
  480. #define RXON_FLG_BAND_24G_MSK __constant_cpu_to_le32(1 << 0)
  481. #define RXON_FLG_CCK_MSK __constant_cpu_to_le32(1 << 1)
  482. /* auto detection enable */
  483. #define RXON_FLG_AUTO_DETECT_MSK __constant_cpu_to_le32(1 << 2)
  484. /* TGg protection when tx */
  485. #define RXON_FLG_TGG_PROTECT_MSK __constant_cpu_to_le32(1 << 3)
  486. /* cck short slot & preamble */
  487. #define RXON_FLG_SHORT_SLOT_MSK __constant_cpu_to_le32(1 << 4)
  488. #define RXON_FLG_SHORT_PREAMBLE_MSK __constant_cpu_to_le32(1 << 5)
  489. /* antenna selection */
  490. #define RXON_FLG_DIS_DIV_MSK __constant_cpu_to_le32(1 << 7)
  491. #define RXON_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0x0f00)
  492. #define RXON_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
  493. #define RXON_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
  494. /* radar detection enable */
  495. #define RXON_FLG_RADAR_DETECT_MSK __constant_cpu_to_le32(1 << 12)
  496. #define RXON_FLG_TGJ_NARROW_BAND_MSK __constant_cpu_to_le32(1 << 13)
  497. /* rx response to host with 8-byte TSF
  498. * (according to ON_AIR deassertion) */
  499. #define RXON_FLG_TSF2HOST_MSK __constant_cpu_to_le32(1 << 15)
  500. /* HT flags */
  501. #define RXON_FLG_CTRL_CHANNEL_LOC_POS (22)
  502. #define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK __constant_cpu_to_le32(0x1 << 22)
  503. #define RXON_FLG_HT_OPERATING_MODE_POS (23)
  504. #define RXON_FLG_HT_PROT_MSK __constant_cpu_to_le32(0x1 << 23)
  505. #define RXON_FLG_FAT_PROT_MSK __constant_cpu_to_le32(0x2 << 23)
  506. #define RXON_FLG_CHANNEL_MODE_POS (25)
  507. #define RXON_FLG_CHANNEL_MODE_MSK __constant_cpu_to_le32(0x3 << 25)
  508. #define RXON_FLG_CHANNEL_MODE_PURE_40_MSK __constant_cpu_to_le32(0x1 << 25)
  509. #define RXON_FLG_CHANNEL_MODE_MIXED_MSK __constant_cpu_to_le32(0x2 << 25)
  510. /* CTS to self (if spec allows) flag */
  511. #define RXON_FLG_SELF_CTS_EN __constant_cpu_to_le32(0x1<<30)
  512. /* rx_config filter flags */
  513. /* accept all data frames */
  514. #define RXON_FILTER_PROMISC_MSK __constant_cpu_to_le32(1 << 0)
  515. /* pass control & management to host */
  516. #define RXON_FILTER_CTL2HOST_MSK __constant_cpu_to_le32(1 << 1)
  517. /* accept multi-cast */
  518. #define RXON_FILTER_ACCEPT_GRP_MSK __constant_cpu_to_le32(1 << 2)
  519. /* don't decrypt uni-cast frames */
  520. #define RXON_FILTER_DIS_DECRYPT_MSK __constant_cpu_to_le32(1 << 3)
  521. /* don't decrypt multi-cast frames */
  522. #define RXON_FILTER_DIS_GRP_DECRYPT_MSK __constant_cpu_to_le32(1 << 4)
  523. /* STA is associated */
  524. #define RXON_FILTER_ASSOC_MSK __constant_cpu_to_le32(1 << 5)
  525. /* transfer to host non bssid beacons in associated state */
  526. #define RXON_FILTER_BCON_AWARE_MSK __constant_cpu_to_le32(1 << 6)
  527. /**
  528. * REPLY_RXON = 0x10 (command, has simple generic response)
  529. *
  530. * RXON tunes the radio tuner to a service channel, and sets up a number
  531. * of parameters that are used primarily for Rx, but also for Tx operations.
  532. *
  533. * NOTE: When tuning to a new channel, driver must set the
  534. * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent
  535. * info within the device, including the station tables, tx retry
  536. * rate tables, and txpower tables. Driver must build a new station
  537. * table and txpower table before transmitting anything on the RXON
  538. * channel.
  539. *
  540. * NOTE: All RXONs wipe clean the internal txpower table. Driver must
  541. * issue a new REPLY_TX_PWR_TABLE_CMD after each REPLY_RXON (0x10),
  542. * regardless of whether RXON_FILTER_ASSOC_MSK is set.
  543. */
  544. struct iwl4965_rxon_cmd {
  545. u8 node_addr[6];
  546. __le16 reserved1;
  547. u8 bssid_addr[6];
  548. __le16 reserved2;
  549. u8 wlap_bssid_addr[6];
  550. __le16 reserved3;
  551. u8 dev_type;
  552. u8 air_propagation;
  553. __le16 rx_chain;
  554. u8 ofdm_basic_rates;
  555. u8 cck_basic_rates;
  556. __le16 assoc_id;
  557. __le32 flags;
  558. __le32 filter_flags;
  559. __le16 channel;
  560. u8 ofdm_ht_single_stream_basic_rates;
  561. u8 ofdm_ht_dual_stream_basic_rates;
  562. } __attribute__ ((packed));
  563. /* 5000 HW just extend this cmmand */
  564. struct iwl_rxon_cmd {
  565. u8 node_addr[6];
  566. __le16 reserved1;
  567. u8 bssid_addr[6];
  568. __le16 reserved2;
  569. u8 wlap_bssid_addr[6];
  570. __le16 reserved3;
  571. u8 dev_type;
  572. u8 air_propagation;
  573. __le16 rx_chain;
  574. u8 ofdm_basic_rates;
  575. u8 cck_basic_rates;
  576. __le16 assoc_id;
  577. __le32 flags;
  578. __le32 filter_flags;
  579. __le16 channel;
  580. u8 ofdm_ht_single_stream_basic_rates;
  581. u8 ofdm_ht_dual_stream_basic_rates;
  582. u8 ofdm_ht_triple_stream_basic_rates;
  583. u8 reserved5;
  584. __le16 acquisition_data;
  585. __le16 reserved6;
  586. } __attribute__ ((packed));
  587. struct iwl5000_rxon_assoc_cmd {
  588. __le32 flags;
  589. __le32 filter_flags;
  590. u8 ofdm_basic_rates;
  591. u8 cck_basic_rates;
  592. __le16 reserved1;
  593. u8 ofdm_ht_single_stream_basic_rates;
  594. u8 ofdm_ht_dual_stream_basic_rates;
  595. u8 ofdm_ht_triple_stream_basic_rates;
  596. u8 reserved2;
  597. __le16 rx_chain_select_flags;
  598. __le16 acquisition_data;
  599. __le32 reserved3;
  600. } __attribute__ ((packed));
  601. /*
  602. * REPLY_RXON_ASSOC = 0x11 (command, has simple generic response)
  603. */
  604. struct iwl4965_rxon_assoc_cmd {
  605. __le32 flags;
  606. __le32 filter_flags;
  607. u8 ofdm_basic_rates;
  608. u8 cck_basic_rates;
  609. u8 ofdm_ht_single_stream_basic_rates;
  610. u8 ofdm_ht_dual_stream_basic_rates;
  611. __le16 rx_chain_select_flags;
  612. __le16 reserved;
  613. } __attribute__ ((packed));
  614. #define IWL_CONN_MAX_LISTEN_INTERVAL 10
  615. /*
  616. * REPLY_RXON_TIMING = 0x14 (command, has simple generic response)
  617. */
  618. struct iwl_rxon_time_cmd {
  619. __le64 timestamp;
  620. __le16 beacon_interval;
  621. __le16 atim_window;
  622. __le32 beacon_init_val;
  623. __le16 listen_interval;
  624. __le16 reserved;
  625. } __attribute__ ((packed));
  626. /*
  627. * REPLY_CHANNEL_SWITCH = 0x72 (command, has simple generic response)
  628. */
  629. struct iwl4965_channel_switch_cmd {
  630. u8 band;
  631. u8 expect_beacon;
  632. __le16 channel;
  633. __le32 rxon_flags;
  634. __le32 rxon_filter_flags;
  635. __le32 switch_time;
  636. struct iwl4965_tx_power_db tx_power;
  637. } __attribute__ ((packed));
  638. /*
  639. * CHANNEL_SWITCH_NOTIFICATION = 0x73 (notification only, not a command)
  640. */
  641. struct iwl4965_csa_notification {
  642. __le16 band;
  643. __le16 channel;
  644. __le32 status; /* 0 - OK, 1 - fail */
  645. } __attribute__ ((packed));
  646. /******************************************************************************
  647. * (2)
  648. * Quality-of-Service (QOS) Commands & Responses:
  649. *
  650. *****************************************************************************/
  651. /**
  652. * struct iwl_ac_qos -- QOS timing params for REPLY_QOS_PARAM
  653. * One for each of 4 EDCA access categories in struct iwl_qosparam_cmd
  654. *
  655. * @cw_min: Contention window, start value in numbers of slots.
  656. * Should be a power-of-2, minus 1. Device's default is 0x0f.
  657. * @cw_max: Contention window, max value in numbers of slots.
  658. * Should be a power-of-2, minus 1. Device's default is 0x3f.
  659. * @aifsn: Number of slots in Arbitration Interframe Space (before
  660. * performing random backoff timing prior to Tx). Device default 1.
  661. * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0.
  662. *
  663. * Device will automatically increase contention window by (2*CW) + 1 for each
  664. * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW
  665. * value, to cap the CW value.
  666. */
  667. struct iwl_ac_qos {
  668. __le16 cw_min;
  669. __le16 cw_max;
  670. u8 aifsn;
  671. u8 reserved1;
  672. __le16 edca_txop;
  673. } __attribute__ ((packed));
  674. /* QoS flags defines */
  675. #define QOS_PARAM_FLG_UPDATE_EDCA_MSK __constant_cpu_to_le32(0x01)
  676. #define QOS_PARAM_FLG_TGN_MSK __constant_cpu_to_le32(0x02)
  677. #define QOS_PARAM_FLG_TXOP_TYPE_MSK __constant_cpu_to_le32(0x10)
  678. /* Number of Access Categories (AC) (EDCA), queues 0..3 */
  679. #define AC_NUM 4
  680. /*
  681. * REPLY_QOS_PARAM = 0x13 (command, has simple generic response)
  682. *
  683. * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs
  684. * 0: Background, 1: Best Effort, 2: Video, 3: Voice.
  685. */
  686. struct iwl_qosparam_cmd {
  687. __le32 qos_flags;
  688. struct iwl_ac_qos ac[AC_NUM];
  689. } __attribute__ ((packed));
  690. /******************************************************************************
  691. * (3)
  692. * Add/Modify Stations Commands & Responses:
  693. *
  694. *****************************************************************************/
  695. /*
  696. * Multi station support
  697. */
  698. /* Special, dedicated locations within device's station table */
  699. #define IWL_AP_ID 0
  700. #define IWL_MULTICAST_ID 1
  701. #define IWL_STA_ID 2
  702. #define IWL4965_BROADCAST_ID 31
  703. #define IWL4965_STATION_COUNT 32
  704. #define IWL5000_BROADCAST_ID 15
  705. #define IWL5000_STATION_COUNT 16
  706. #define IWL_STATION_COUNT 32 /* MAX(3945,4965)*/
  707. #define IWL_INVALID_STATION 255
  708. #define STA_FLG_PWR_SAVE_MSK __constant_cpu_to_le32(1 << 8);
  709. #define STA_FLG_RTS_MIMO_PROT_MSK __constant_cpu_to_le32(1 << 17)
  710. #define STA_FLG_AGG_MPDU_8US_MSK __constant_cpu_to_le32(1 << 18)
  711. #define STA_FLG_MAX_AGG_SIZE_POS (19)
  712. #define STA_FLG_MAX_AGG_SIZE_MSK __constant_cpu_to_le32(3 << 19)
  713. #define STA_FLG_FAT_EN_MSK __constant_cpu_to_le32(1 << 21)
  714. #define STA_FLG_MIMO_DIS_MSK __constant_cpu_to_le32(1 << 22)
  715. #define STA_FLG_AGG_MPDU_DENSITY_POS (23)
  716. #define STA_FLG_AGG_MPDU_DENSITY_MSK __constant_cpu_to_le32(7 << 23)
  717. /* Use in mode field. 1: modify existing entry, 0: add new station entry */
  718. #define STA_CONTROL_MODIFY_MSK 0x01
  719. /* key flags __le16*/
  720. #define STA_KEY_FLG_ENCRYPT_MSK __constant_cpu_to_le16(0x0007)
  721. #define STA_KEY_FLG_NO_ENC __constant_cpu_to_le16(0x0000)
  722. #define STA_KEY_FLG_WEP __constant_cpu_to_le16(0x0001)
  723. #define STA_KEY_FLG_CCMP __constant_cpu_to_le16(0x0002)
  724. #define STA_KEY_FLG_TKIP __constant_cpu_to_le16(0x0003)
  725. #define STA_KEY_FLG_KEYID_POS 8
  726. #define STA_KEY_FLG_INVALID __constant_cpu_to_le16(0x0800)
  727. /* wep key is either from global key (0) or from station info array (1) */
  728. #define STA_KEY_FLG_MAP_KEY_MSK __constant_cpu_to_le16(0x0008)
  729. /* wep key in STA: 5-bytes (0) or 13-bytes (1) */
  730. #define STA_KEY_FLG_KEY_SIZE_MSK __constant_cpu_to_le16(0x1000)
  731. #define STA_KEY_MULTICAST_MSK __constant_cpu_to_le16(0x4000)
  732. #define STA_KEY_MAX_NUM 8
  733. /* Flags indicate whether to modify vs. don't change various station params */
  734. #define STA_MODIFY_KEY_MASK 0x01
  735. #define STA_MODIFY_TID_DISABLE_TX 0x02
  736. #define STA_MODIFY_TX_RATE_MSK 0x04
  737. #define STA_MODIFY_ADDBA_TID_MSK 0x08
  738. #define STA_MODIFY_DELBA_TID_MSK 0x10
  739. /* Receiver address (actually, Rx station's index into station table),
  740. * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */
  741. #define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
  742. struct iwl4965_keyinfo {
  743. __le16 key_flags;
  744. u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
  745. u8 reserved1;
  746. __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
  747. u8 key_offset;
  748. u8 reserved2;
  749. u8 key[16]; /* 16-byte unicast decryption key */
  750. } __attribute__ ((packed));
  751. /* 5000 */
  752. struct iwl_keyinfo {
  753. __le16 key_flags;
  754. u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
  755. u8 reserved1;
  756. __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
  757. u8 key_offset;
  758. u8 reserved2;
  759. u8 key[16]; /* 16-byte unicast decryption key */
  760. __le64 tx_secur_seq_cnt;
  761. __le64 hw_tkip_mic_rx_key;
  762. __le64 hw_tkip_mic_tx_key;
  763. } __attribute__ ((packed));
  764. /**
  765. * struct sta_id_modify
  766. * @addr[ETH_ALEN]: station's MAC address
  767. * @sta_id: index of station in uCode's station table
  768. * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change
  769. *
  770. * Driver selects unused table index when adding new station,
  771. * or the index to a pre-existing station entry when modifying that station.
  772. * Some indexes have special purposes (IWL_AP_ID, index 0, is for AP).
  773. *
  774. * modify_mask flags select which parameters to modify vs. leave alone.
  775. */
  776. struct sta_id_modify {
  777. u8 addr[ETH_ALEN];
  778. __le16 reserved1;
  779. u8 sta_id;
  780. u8 modify_mask;
  781. __le16 reserved2;
  782. } __attribute__ ((packed));
  783. /*
  784. * REPLY_ADD_STA = 0x18 (command)
  785. *
  786. * The device contains an internal table of per-station information,
  787. * with info on security keys, aggregation parameters, and Tx rates for
  788. * initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD,
  789. * 3945 uses REPLY_RATE_SCALE to set up rate tables).
  790. *
  791. * REPLY_ADD_STA sets up the table entry for one station, either creating
  792. * a new entry, or modifying a pre-existing one.
  793. *
  794. * NOTE: RXON command (without "associated" bit set) wipes the station table
  795. * clean. Moving into RF_KILL state does this also. Driver must set up
  796. * new station table before transmitting anything on the RXON channel
  797. * (except active scans or active measurements; those commands carry
  798. * their own txpower/rate setup data).
  799. *
  800. * When getting started on a new channel, driver must set up the
  801. * IWL_BROADCAST_ID entry (last entry in the table). For a client
  802. * station in a BSS, once an AP is selected, driver sets up the AP STA
  803. * in the IWL_AP_ID entry (1st entry in the table). BROADCAST and AP
  804. * are all that are needed for a BSS client station. If the device is
  805. * used as AP, or in an IBSS network, driver must set up station table
  806. * entries for all STAs in network, starting with index IWL_STA_ID.
  807. */
  808. struct iwl4965_addsta_cmd {
  809. u8 mode; /* 1: modify existing, 0: add new station */
  810. u8 reserved[3];
  811. struct sta_id_modify sta;
  812. struct iwl4965_keyinfo key;
  813. __le32 station_flags; /* STA_FLG_* */
  814. __le32 station_flags_msk; /* STA_FLG_* */
  815. /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
  816. * corresponding to bit (e.g. bit 5 controls TID 5).
  817. * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
  818. __le16 tid_disable_tx;
  819. __le16 reserved1;
  820. /* TID for which to add block-ack support.
  821. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
  822. u8 add_immediate_ba_tid;
  823. /* TID for which to remove block-ack support.
  824. * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
  825. u8 remove_immediate_ba_tid;
  826. /* Starting Sequence Number for added block-ack support.
  827. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
  828. __le16 add_immediate_ba_ssn;
  829. __le32 reserved2;
  830. } __attribute__ ((packed));
  831. /* 5000 */
  832. struct iwl_addsta_cmd {
  833. u8 mode; /* 1: modify existing, 0: add new station */
  834. u8 reserved[3];
  835. struct sta_id_modify sta;
  836. struct iwl_keyinfo key;
  837. __le32 station_flags; /* STA_FLG_* */
  838. __le32 station_flags_msk; /* STA_FLG_* */
  839. /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
  840. * corresponding to bit (e.g. bit 5 controls TID 5).
  841. * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
  842. __le16 tid_disable_tx;
  843. __le16 reserved1;
  844. /* TID for which to add block-ack support.
  845. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
  846. u8 add_immediate_ba_tid;
  847. /* TID for which to remove block-ack support.
  848. * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
  849. u8 remove_immediate_ba_tid;
  850. /* Starting Sequence Number for added block-ack support.
  851. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
  852. __le16 add_immediate_ba_ssn;
  853. __le32 reserved2;
  854. } __attribute__ ((packed));
  855. #define ADD_STA_SUCCESS_MSK 0x1
  856. #define ADD_STA_NO_ROOM_IN_TABLE 0x2
  857. #define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4
  858. #define ADD_STA_MODIFY_NON_EXIST_STA 0x8
  859. /*
  860. * REPLY_ADD_STA = 0x18 (response)
  861. */
  862. struct iwl_add_sta_resp {
  863. u8 status; /* ADD_STA_* */
  864. } __attribute__ ((packed));
  865. #define REM_STA_SUCCESS_MSK 0x1
  866. /*
  867. * REPLY_REM_STA = 0x19 (response)
  868. */
  869. struct iwl_rem_sta_resp {
  870. u8 status;
  871. } __attribute__ ((packed));
  872. /*
  873. * REPLY_REM_STA = 0x19 (command)
  874. */
  875. struct iwl_rem_sta_cmd {
  876. u8 num_sta; /* number of removed stations */
  877. u8 reserved[3];
  878. u8 addr[ETH_ALEN]; /* MAC addr of the first station */
  879. u8 reserved2[2];
  880. } __attribute__ ((packed));
  881. /*
  882. * REPLY_WEP_KEY = 0x20
  883. */
  884. struct iwl_wep_key {
  885. u8 key_index;
  886. u8 key_offset;
  887. u8 reserved1[2];
  888. u8 key_size;
  889. u8 reserved2[3];
  890. u8 key[16];
  891. } __attribute__ ((packed));
  892. struct iwl_wep_cmd {
  893. u8 num_keys;
  894. u8 global_key_type;
  895. u8 flags;
  896. u8 reserved;
  897. struct iwl_wep_key key[0];
  898. } __attribute__ ((packed));
  899. #define WEP_KEY_WEP_TYPE 1
  900. #define WEP_KEYS_MAX 4
  901. #define WEP_INVALID_OFFSET 0xff
  902. #define WEP_KEY_LEN_64 5
  903. #define WEP_KEY_LEN_128 13
  904. /******************************************************************************
  905. * (4)
  906. * Rx Responses:
  907. *
  908. *****************************************************************************/
  909. struct iwl4965_rx_frame_stats {
  910. u8 phy_count;
  911. u8 id;
  912. u8 rssi;
  913. u8 agc;
  914. __le16 sig_avg;
  915. __le16 noise_diff;
  916. u8 payload[0];
  917. } __attribute__ ((packed));
  918. struct iwl4965_rx_frame_hdr {
  919. __le16 channel;
  920. __le16 phy_flags;
  921. u8 reserved1;
  922. u8 rate;
  923. __le16 len;
  924. u8 payload[0];
  925. } __attribute__ ((packed));
  926. #define RX_RES_STATUS_NO_CRC32_ERROR __constant_cpu_to_le32(1 << 0)
  927. #define RX_RES_STATUS_NO_RXE_OVERFLOW __constant_cpu_to_le32(1 << 1)
  928. #define RX_RES_PHY_FLAGS_BAND_24_MSK __constant_cpu_to_le16(1 << 0)
  929. #define RX_RES_PHY_FLAGS_MOD_CCK_MSK __constant_cpu_to_le16(1 << 1)
  930. #define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK __constant_cpu_to_le16(1 << 2)
  931. #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK __constant_cpu_to_le16(1 << 3)
  932. #define RX_RES_PHY_FLAGS_ANTENNA_MSK __constant_cpu_to_le16(0xf0)
  933. #define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8)
  934. #define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8)
  935. #define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8)
  936. #define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8)
  937. #define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8)
  938. #define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8)
  939. #define RX_RES_STATUS_STATION_FOUND (1<<6)
  940. #define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7)
  941. #define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11)
  942. #define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11)
  943. #define RX_RES_STATUS_DECRYPT_OK (0x3 << 11)
  944. #define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11)
  945. #define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11)
  946. #define RX_MPDU_RES_STATUS_ICV_OK (0x20)
  947. #define RX_MPDU_RES_STATUS_MIC_OK (0x40)
  948. #define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7)
  949. #define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800)
  950. struct iwl4965_rx_frame_end {
  951. __le32 status;
  952. __le64 timestamp;
  953. __le32 beacon_timestamp;
  954. } __attribute__ ((packed));
  955. /*
  956. * REPLY_3945_RX = 0x1b (response only, not a command)
  957. *
  958. * NOTE: DO NOT dereference from casts to this structure
  959. * It is provided only for calculating minimum data set size.
  960. * The actual offsets of the hdr and end are dynamic based on
  961. * stats.phy_count
  962. */
  963. struct iwl4965_rx_frame {
  964. struct iwl4965_rx_frame_stats stats;
  965. struct iwl4965_rx_frame_hdr hdr;
  966. struct iwl4965_rx_frame_end end;
  967. } __attribute__ ((packed));
  968. /* Fixed (non-configurable) rx data from phy */
  969. #define IWL49_RX_RES_PHY_CNT 14
  970. #define IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET (4)
  971. #define IWL49_RX_PHY_FLAGS_ANTENNAE_MASK (0x70)
  972. #define IWL49_AGC_DB_MASK (0x3f80) /* MASK(7,13) */
  973. #define IWL49_AGC_DB_POS (7)
  974. struct iwl4965_rx_non_cfg_phy {
  975. __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */
  976. __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */
  977. u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */
  978. u8 pad[0];
  979. } __attribute__ ((packed));
  980. #define IWL50_RX_RES_PHY_CNT 8
  981. #define IWL50_RX_RES_AGC_IDX 1
  982. #define IWL50_RX_RES_RSSI_AB_IDX 2
  983. #define IWL50_RX_RES_RSSI_C_IDX 3
  984. #define IWL50_OFDM_AGC_MSK 0xfe00
  985. #define IWL50_OFDM_AGC_BIT_POS 9
  986. #define IWL50_OFDM_RSSI_A_MSK 0x00ff
  987. #define IWL50_OFDM_RSSI_A_BIT_POS 0
  988. #define IWL50_OFDM_RSSI_B_MSK 0xff0000
  989. #define IWL50_OFDM_RSSI_B_BIT_POS 16
  990. #define IWL50_OFDM_RSSI_C_MSK 0x00ff
  991. #define IWL50_OFDM_RSSI_C_BIT_POS 0
  992. struct iwl5000_non_cfg_phy {
  993. __le32 non_cfg_phy[IWL50_RX_RES_PHY_CNT]; /* upto 8 phy entries */
  994. } __attribute__ ((packed));
  995. /*
  996. * REPLY_RX = 0xc3 (response only, not a command)
  997. * Used only for legacy (non 11n) frames.
  998. */
  999. struct iwl_rx_phy_res {
  1000. u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */
  1001. u8 cfg_phy_cnt; /* configurable DSP phy data byte count */
  1002. u8 stat_id; /* configurable DSP phy data set ID */
  1003. u8 reserved1;
  1004. __le64 timestamp; /* TSF at on air rise */
  1005. __le32 beacon_time_stamp; /* beacon at on-air rise */
  1006. __le16 phy_flags; /* general phy flags: band, modulation, ... */
  1007. __le16 channel; /* channel number */
  1008. u8 non_cfg_phy_buf[32]; /* for various implementations of non_cfg_phy */
  1009. __le32 rate_n_flags; /* RATE_MCS_* */
  1010. __le16 byte_count; /* frame's byte-count */
  1011. __le16 reserved3;
  1012. } __attribute__ ((packed));
  1013. struct iwl4965_rx_mpdu_res_start {
  1014. __le16 byte_count;
  1015. __le16 reserved;
  1016. } __attribute__ ((packed));
  1017. /******************************************************************************
  1018. * (5)
  1019. * Tx Commands & Responses:
  1020. *
  1021. * Driver must place each REPLY_TX command into one of the prioritized Tx
  1022. * queues in host DRAM, shared between driver and device (see comments for
  1023. * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode
  1024. * are preparing to transmit, the device pulls the Tx command over the PCI
  1025. * bus via one of the device's Tx DMA channels, to fill an internal FIFO
  1026. * from which data will be transmitted.
  1027. *
  1028. * uCode handles all timing and protocol related to control frames
  1029. * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler
  1030. * handle reception of block-acks; uCode updates the host driver via
  1031. * REPLY_COMPRESSED_BA (4965).
  1032. *
  1033. * uCode handles retrying Tx when an ACK is expected but not received.
  1034. * This includes trying lower data rates than the one requested in the Tx
  1035. * command, as set up by the REPLY_RATE_SCALE (for 3945) or
  1036. * REPLY_TX_LINK_QUALITY_CMD (4965).
  1037. *
  1038. * Driver sets up transmit power for various rates via REPLY_TX_PWR_TABLE_CMD.
  1039. * This command must be executed after every RXON command, before Tx can occur.
  1040. *****************************************************************************/
  1041. /* REPLY_TX Tx flags field */
  1042. /* 1: Use RTS/CTS protocol or CTS-to-self if spec alows it
  1043. * before this frame. if CTS-to-self required check
  1044. * RXON_FLG_SELF_CTS_EN status. */
  1045. #define TX_CMD_FLG_RTS_CTS_MSK __constant_cpu_to_le32(1 << 0)
  1046. /* 1: Use Request-To-Send protocol before this frame.
  1047. * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. */
  1048. #define TX_CMD_FLG_RTS_MSK __constant_cpu_to_le32(1 << 1)
  1049. /* 1: Transmit Clear-To-Send to self before this frame.
  1050. * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames.
  1051. * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. */
  1052. #define TX_CMD_FLG_CTS_MSK __constant_cpu_to_le32(1 << 2)
  1053. /* 1: Expect ACK from receiving station
  1054. * 0: Don't expect ACK (MAC header's duration field s/b 0)
  1055. * Set this for unicast frames, but not broadcast/multicast. */
  1056. #define TX_CMD_FLG_ACK_MSK __constant_cpu_to_le32(1 << 3)
  1057. /* For 4965:
  1058. * 1: Use rate scale table (see REPLY_TX_LINK_QUALITY_CMD).
  1059. * Tx command's initial_rate_index indicates first rate to try;
  1060. * uCode walks through table for additional Tx attempts.
  1061. * 0: Use Tx rate/MCS from Tx command's rate_n_flags field.
  1062. * This rate will be used for all Tx attempts; it will not be scaled. */
  1063. #define TX_CMD_FLG_STA_RATE_MSK __constant_cpu_to_le32(1 << 4)
  1064. /* 1: Expect immediate block-ack.
  1065. * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */
  1066. #define TX_CMD_FLG_IMM_BA_RSP_MASK __constant_cpu_to_le32(1 << 6)
  1067. /* 1: Frame requires full Tx-Op protection.
  1068. * Set this if either RTS or CTS Tx Flag gets set. */
  1069. #define TX_CMD_FLG_FULL_TXOP_PROT_MSK __constant_cpu_to_le32(1 << 7)
  1070. /* Tx antenna selection field; used only for 3945, reserved (0) for 4965.
  1071. * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */
  1072. #define TX_CMD_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0xf00)
  1073. #define TX_CMD_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
  1074. #define TX_CMD_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
  1075. /* 1: Ignore Bluetooth priority for this frame.
  1076. * 0: Delay Tx until Bluetooth device is done (normal usage). */
  1077. #define TX_CMD_FLG_BT_DIS_MSK __constant_cpu_to_le32(1 << 12)
  1078. /* 1: uCode overrides sequence control field in MAC header.
  1079. * 0: Driver provides sequence control field in MAC header.
  1080. * Set this for management frames, non-QOS data frames, non-unicast frames,
  1081. * and also in Tx command embedded in REPLY_SCAN_CMD for active scans. */
  1082. #define TX_CMD_FLG_SEQ_CTL_MSK __constant_cpu_to_le32(1 << 13)
  1083. /* 1: This frame is non-last MPDU; more fragments are coming.
  1084. * 0: Last fragment, or not using fragmentation. */
  1085. #define TX_CMD_FLG_MORE_FRAG_MSK __constant_cpu_to_le32(1 << 14)
  1086. /* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame.
  1087. * 0: No TSF required in outgoing frame.
  1088. * Set this for transmitting beacons and probe responses. */
  1089. #define TX_CMD_FLG_TSF_MSK __constant_cpu_to_le32(1 << 16)
  1090. /* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword
  1091. * alignment of frame's payload data field.
  1092. * 0: No pad
  1093. * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4
  1094. * field (but not both). Driver must align frame data (i.e. data following
  1095. * MAC header) to DWORD boundary. */
  1096. #define TX_CMD_FLG_MH_PAD_MSK __constant_cpu_to_le32(1 << 20)
  1097. /* accelerate aggregation support
  1098. * 0 - no CCMP encryption; 1 - CCMP encryption */
  1099. #define TX_CMD_FLG_AGG_CCMP_MSK __constant_cpu_to_le32(1 << 22)
  1100. /* HCCA-AP - disable duration overwriting. */
  1101. #define TX_CMD_FLG_DUR_MSK __constant_cpu_to_le32(1 << 25)
  1102. /*
  1103. * TX command security control
  1104. */
  1105. #define TX_CMD_SEC_WEP 0x01
  1106. #define TX_CMD_SEC_CCM 0x02
  1107. #define TX_CMD_SEC_TKIP 0x03
  1108. #define TX_CMD_SEC_MSK 0x03
  1109. #define TX_CMD_SEC_SHIFT 6
  1110. #define TX_CMD_SEC_KEY128 0x08
  1111. /*
  1112. * security overhead sizes
  1113. */
  1114. #define WEP_IV_LEN 4
  1115. #define WEP_ICV_LEN 4
  1116. #define CCMP_MIC_LEN 8
  1117. #define TKIP_ICV_LEN 4
  1118. /*
  1119. * 4965 uCode updates these Tx attempt count values in host DRAM.
  1120. * Used for managing Tx retries when expecting block-acks.
  1121. * Driver should set these fields to 0.
  1122. */
  1123. struct iwl4965_dram_scratch {
  1124. u8 try_cnt; /* Tx attempts */
  1125. u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */
  1126. __le16 reserved;
  1127. } __attribute__ ((packed));
  1128. /*
  1129. * REPLY_TX = 0x1c (command)
  1130. */
  1131. struct iwl_tx_cmd {
  1132. /*
  1133. * MPDU byte count:
  1134. * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size,
  1135. * + 8 byte IV for CCM or TKIP (not used for WEP)
  1136. * + Data payload
  1137. * + 8-byte MIC (not used for CCM/WEP)
  1138. * NOTE: Does not include Tx command bytes, post-MAC pad bytes,
  1139. * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i
  1140. * Range: 14-2342 bytes.
  1141. */
  1142. __le16 len;
  1143. /*
  1144. * MPDU or MSDU byte count for next frame.
  1145. * Used for fragmentation and bursting, but not 11n aggregation.
  1146. * Same as "len", but for next frame. Set to 0 if not applicable.
  1147. */
  1148. __le16 next_frame_len;
  1149. __le32 tx_flags; /* TX_CMD_FLG_* */
  1150. /* 4965's uCode may modify this field of the Tx command (in host DRAM!).
  1151. * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */
  1152. struct iwl4965_dram_scratch scratch;
  1153. /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */
  1154. __le32 rate_n_flags; /* RATE_MCS_* */
  1155. /* Index of destination station in uCode's station table */
  1156. u8 sta_id;
  1157. /* Type of security encryption: CCM or TKIP */
  1158. u8 sec_ctl; /* TX_CMD_SEC_* */
  1159. /*
  1160. * Index into rate table (see REPLY_TX_LINK_QUALITY_CMD) for initial
  1161. * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for
  1162. * data frames, this field may be used to selectively reduce initial
  1163. * rate (via non-0 value) for special frames (e.g. management), while
  1164. * still supporting rate scaling for all frames.
  1165. */
  1166. u8 initial_rate_index;
  1167. u8 reserved;
  1168. u8 key[16];
  1169. __le16 next_frame_flags;
  1170. __le16 reserved2;
  1171. union {
  1172. __le32 life_time;
  1173. __le32 attempt;
  1174. } stop_time;
  1175. /* Host DRAM physical address pointer to "scratch" in this command.
  1176. * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */
  1177. __le32 dram_lsb_ptr;
  1178. u8 dram_msb_ptr;
  1179. u8 rts_retry_limit; /*byte 50 */
  1180. u8 data_retry_limit; /*byte 51 */
  1181. u8 tid_tspec;
  1182. union {
  1183. __le16 pm_frame_timeout;
  1184. __le16 attempt_duration;
  1185. } timeout;
  1186. /*
  1187. * Duration of EDCA burst Tx Opportunity, in 32-usec units.
  1188. * Set this if txop time is not specified by HCCA protocol (e.g. by AP).
  1189. */
  1190. __le16 driver_txop;
  1191. /*
  1192. * MAC header goes here, followed by 2 bytes padding if MAC header
  1193. * length is 26 or 30 bytes, followed by payload data
  1194. */
  1195. u8 payload[0];
  1196. struct ieee80211_hdr hdr[0];
  1197. } __attribute__ ((packed));
  1198. /* TX command response is sent after *all* transmission attempts.
  1199. *
  1200. * NOTES:
  1201. *
  1202. * TX_STATUS_FAIL_NEXT_FRAG
  1203. *
  1204. * If the fragment flag in the MAC header for the frame being transmitted
  1205. * is set and there is insufficient time to transmit the next frame, the
  1206. * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'.
  1207. *
  1208. * TX_STATUS_FIFO_UNDERRUN
  1209. *
  1210. * Indicates the host did not provide bytes to the FIFO fast enough while
  1211. * a TX was in progress.
  1212. *
  1213. * TX_STATUS_FAIL_MGMNT_ABORT
  1214. *
  1215. * This status is only possible if the ABORT ON MGMT RX parameter was
  1216. * set to true with the TX command.
  1217. *
  1218. * If the MSB of the status parameter is set then an abort sequence is
  1219. * required. This sequence consists of the host activating the TX Abort
  1220. * control line, and then waiting for the TX Abort command response. This
  1221. * indicates that a the device is no longer in a transmit state, and that the
  1222. * command FIFO has been cleared. The host must then deactivate the TX Abort
  1223. * control line. Receiving is still allowed in this case.
  1224. */
  1225. enum {
  1226. TX_STATUS_SUCCESS = 0x01,
  1227. TX_STATUS_DIRECT_DONE = 0x02,
  1228. TX_STATUS_FAIL_SHORT_LIMIT = 0x82,
  1229. TX_STATUS_FAIL_LONG_LIMIT = 0x83,
  1230. TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84,
  1231. TX_STATUS_FAIL_MGMNT_ABORT = 0x85,
  1232. TX_STATUS_FAIL_NEXT_FRAG = 0x86,
  1233. TX_STATUS_FAIL_LIFE_EXPIRE = 0x87,
  1234. TX_STATUS_FAIL_DEST_PS = 0x88,
  1235. TX_STATUS_FAIL_ABORTED = 0x89,
  1236. TX_STATUS_FAIL_BT_RETRY = 0x8a,
  1237. TX_STATUS_FAIL_STA_INVALID = 0x8b,
  1238. TX_STATUS_FAIL_FRAG_DROPPED = 0x8c,
  1239. TX_STATUS_FAIL_TID_DISABLE = 0x8d,
  1240. TX_STATUS_FAIL_FRAME_FLUSHED = 0x8e,
  1241. TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f,
  1242. TX_STATUS_FAIL_TX_LOCKED = 0x90,
  1243. TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91,
  1244. };
  1245. #define TX_PACKET_MODE_REGULAR 0x0000
  1246. #define TX_PACKET_MODE_BURST_SEQ 0x0100
  1247. #define TX_PACKET_MODE_BURST_FIRST 0x0200
  1248. enum {
  1249. TX_POWER_PA_NOT_ACTIVE = 0x0,
  1250. };
  1251. enum {
  1252. TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */
  1253. TX_STATUS_DELAY_MSK = 0x00000040,
  1254. TX_STATUS_ABORT_MSK = 0x00000080,
  1255. TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */
  1256. TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */
  1257. TX_RESERVED = 0x00780000, /* bits 19:22 */
  1258. TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */
  1259. TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */
  1260. };
  1261. static inline int iwl_is_tx_success(u32 status)
  1262. {
  1263. status &= TX_STATUS_MSK;
  1264. return (status == TX_STATUS_SUCCESS)
  1265. || (status == TX_STATUS_DIRECT_DONE);
  1266. }
  1267. /* *******************************
  1268. * TX aggregation status
  1269. ******************************* */
  1270. enum {
  1271. AGG_TX_STATE_TRANSMITTED = 0x00,
  1272. AGG_TX_STATE_UNDERRUN_MSK = 0x01,
  1273. AGG_TX_STATE_BT_PRIO_MSK = 0x02,
  1274. AGG_TX_STATE_FEW_BYTES_MSK = 0x04,
  1275. AGG_TX_STATE_ABORT_MSK = 0x08,
  1276. AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10,
  1277. AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20,
  1278. AGG_TX_STATE_LAST_SENT_BT_KILL_MSK = 0x40,
  1279. AGG_TX_STATE_SCD_QUERY_MSK = 0x80,
  1280. AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100,
  1281. AGG_TX_STATE_RESPONSE_MSK = 0x1ff,
  1282. AGG_TX_STATE_DUMP_TX_MSK = 0x200,
  1283. AGG_TX_STATE_DELAY_TX_MSK = 0x400
  1284. };
  1285. #define AGG_TX_STATE_LAST_SENT_MSK \
  1286. (AGG_TX_STATE_LAST_SENT_TTL_MSK | \
  1287. AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK | \
  1288. AGG_TX_STATE_LAST_SENT_BT_KILL_MSK)
  1289. /* # tx attempts for first frame in aggregation */
  1290. #define AGG_TX_STATE_TRY_CNT_POS 12
  1291. #define AGG_TX_STATE_TRY_CNT_MSK 0xf000
  1292. /* Command ID and sequence number of Tx command for this frame */
  1293. #define AGG_TX_STATE_SEQ_NUM_POS 16
  1294. #define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000
  1295. /*
  1296. * REPLY_TX = 0x1c (response)
  1297. *
  1298. * This response may be in one of two slightly different formats, indicated
  1299. * by the frame_count field:
  1300. *
  1301. * 1) No aggregation (frame_count == 1). This reports Tx results for
  1302. * a single frame. Multiple attempts, at various bit rates, may have
  1303. * been made for this frame.
  1304. *
  1305. * 2) Aggregation (frame_count > 1). This reports Tx results for
  1306. * 2 or more frames that used block-acknowledge. All frames were
  1307. * transmitted at same rate. Rate scaling may have been used if first
  1308. * frame in this new agg block failed in previous agg block(s).
  1309. *
  1310. * Note that, for aggregation, ACK (block-ack) status is not delivered here;
  1311. * block-ack has not been received by the time the 4965 records this status.
  1312. * This status relates to reasons the tx might have been blocked or aborted
  1313. * within the sending station (this 4965), rather than whether it was
  1314. * received successfully by the destination station.
  1315. */
  1316. struct agg_tx_status {
  1317. __le16 status;
  1318. __le16 sequence;
  1319. } __attribute__ ((packed));
  1320. struct iwl4965_tx_resp {
  1321. u8 frame_count; /* 1 no aggregation, >1 aggregation */
  1322. u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
  1323. u8 failure_rts; /* # failures due to unsuccessful RTS */
  1324. u8 failure_frame; /* # failures due to no ACK (unused for agg) */
  1325. /* For non-agg: Rate at which frame was successful.
  1326. * For agg: Rate at which all frames were transmitted. */
  1327. __le32 rate_n_flags; /* RATE_MCS_* */
  1328. /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
  1329. * For agg: RTS + CTS + aggregation tx time + block-ack time. */
  1330. __le16 wireless_media_time; /* uSecs */
  1331. __le16 reserved;
  1332. __le32 pa_power1; /* RF power amplifier measurement (not used) */
  1333. __le32 pa_power2;
  1334. /*
  1335. * For non-agg: frame status TX_STATUS_*
  1336. * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
  1337. * fields follow this one, up to frame_count.
  1338. * Bit fields:
  1339. * 11- 0: AGG_TX_STATE_* status code
  1340. * 15-12: Retry count for 1st frame in aggregation (retries
  1341. * occur if tx failed for this frame when it was a
  1342. * member of a previous aggregation block). If rate
  1343. * scaling is used, retry count indicates the rate
  1344. * table entry used for all frames in the new agg.
  1345. * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
  1346. */
  1347. union {
  1348. __le32 status;
  1349. struct agg_tx_status agg_status[0]; /* for each agg frame */
  1350. } u;
  1351. } __attribute__ ((packed));
  1352. struct iwl5000_tx_resp {
  1353. u8 frame_count; /* 1 no aggregation, >1 aggregation */
  1354. u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
  1355. u8 failure_rts; /* # failures due to unsuccessful RTS */
  1356. u8 failure_frame; /* # failures due to no ACK (unused for agg) */
  1357. /* For non-agg: Rate at which frame was successful.
  1358. * For agg: Rate at which all frames were transmitted. */
  1359. __le32 rate_n_flags; /* RATE_MCS_* */
  1360. /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
  1361. * For agg: RTS + CTS + aggregation tx time + block-ack time. */
  1362. __le16 wireless_media_time; /* uSecs */
  1363. __le16 reserved;
  1364. __le32 pa_power1; /* RF power amplifier measurement (not used) */
  1365. __le32 pa_power2;
  1366. __le32 tfd_info;
  1367. __le16 seq_ctl;
  1368. __le16 byte_cnt;
  1369. __le32 tlc_info;
  1370. /*
  1371. * For non-agg: frame status TX_STATUS_*
  1372. * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
  1373. * fields follow this one, up to frame_count.
  1374. * Bit fields:
  1375. * 11- 0: AGG_TX_STATE_* status code
  1376. * 15-12: Retry count for 1st frame in aggregation (retries
  1377. * occur if tx failed for this frame when it was a
  1378. * member of a previous aggregation block). If rate
  1379. * scaling is used, retry count indicates the rate
  1380. * table entry used for all frames in the new agg.
  1381. * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
  1382. */
  1383. struct agg_tx_status status; /* TX status (in aggregation -
  1384. * status of 1st frame) */
  1385. } __attribute__ ((packed));
  1386. /*
  1387. * REPLY_COMPRESSED_BA = 0xc5 (response only, not a command)
  1388. *
  1389. * Reports Block-Acknowledge from recipient station
  1390. */
  1391. struct iwl_compressed_ba_resp {
  1392. __le32 sta_addr_lo32;
  1393. __le16 sta_addr_hi16;
  1394. __le16 reserved;
  1395. /* Index of recipient (BA-sending) station in uCode's station table */
  1396. u8 sta_id;
  1397. u8 tid;
  1398. __le16 seq_ctl;
  1399. __le64 bitmap;
  1400. __le16 scd_flow;
  1401. __le16 scd_ssn;
  1402. } __attribute__ ((packed));
  1403. /*
  1404. * REPLY_TX_PWR_TABLE_CMD = 0x97 (command, has simple generic response)
  1405. *
  1406. * See details under "TXPOWER" in iwl-4965-hw.h.
  1407. */
  1408. struct iwl4965_txpowertable_cmd {
  1409. u8 band; /* 0: 5 GHz, 1: 2.4 GHz */
  1410. u8 reserved;
  1411. __le16 channel;
  1412. struct iwl4965_tx_power_db tx_power;
  1413. } __attribute__ ((packed));
  1414. /*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */
  1415. #define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0)
  1416. /* # of EDCA prioritized tx fifos */
  1417. #define LINK_QUAL_AC_NUM AC_NUM
  1418. /* # entries in rate scale table to support Tx retries */
  1419. #define LINK_QUAL_MAX_RETRY_NUM 16
  1420. /* Tx antenna selection values */
  1421. #define LINK_QUAL_ANT_A_MSK (1 << 0)
  1422. #define LINK_QUAL_ANT_B_MSK (1 << 1)
  1423. #define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK)
  1424. /**
  1425. * struct iwl_link_qual_general_params
  1426. *
  1427. * Used in REPLY_TX_LINK_QUALITY_CMD
  1428. */
  1429. struct iwl_link_qual_general_params {
  1430. u8 flags;
  1431. /* No entries at or above this (driver chosen) index contain MIMO */
  1432. u8 mimo_delimiter;
  1433. /* Best single antenna to use for single stream (legacy, SISO). */
  1434. u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */
  1435. /* Best antennas to use for MIMO (unused for 4965, assumes both). */
  1436. u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */
  1437. /*
  1438. * If driver needs to use different initial rates for different
  1439. * EDCA QOS access categories (as implemented by tx fifos 0-3),
  1440. * this table will set that up, by indicating the indexes in the
  1441. * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start.
  1442. * Otherwise, driver should set all entries to 0.
  1443. *
  1444. * Entry usage:
  1445. * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice
  1446. * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3.
  1447. */
  1448. u8 start_rate_index[LINK_QUAL_AC_NUM];
  1449. } __attribute__ ((packed));
  1450. /**
  1451. * struct iwl_link_qual_agg_params
  1452. *
  1453. * Used in REPLY_TX_LINK_QUALITY_CMD
  1454. */
  1455. struct iwl_link_qual_agg_params {
  1456. /* Maximum number of uSec in aggregation.
  1457. * Driver should set this to 4000 (4 milliseconds). */
  1458. __le16 agg_time_limit;
  1459. /*
  1460. * Number of Tx retries allowed for a frame, before that frame will
  1461. * no longer be considered for the start of an aggregation sequence
  1462. * (scheduler will then try to tx it as single frame).
  1463. * Driver should set this to 3.
  1464. */
  1465. u8 agg_dis_start_th;
  1466. /*
  1467. * Maximum number of frames in aggregation.
  1468. * 0 = no limit (default). 1 = no aggregation.
  1469. * Other values = max # frames in aggregation.
  1470. */
  1471. u8 agg_frame_cnt_limit;
  1472. __le32 reserved;
  1473. } __attribute__ ((packed));
  1474. /*
  1475. * REPLY_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response)
  1476. *
  1477. * For 4965 only; 3945 uses REPLY_RATE_SCALE.
  1478. *
  1479. * Each station in the 4965's internal station table has its own table of 16
  1480. * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when
  1481. * an ACK is not received. This command replaces the entire table for
  1482. * one station.
  1483. *
  1484. * NOTE: Station must already be in 4965's station table. Use REPLY_ADD_STA.
  1485. *
  1486. * The rate scaling procedures described below work well. Of course, other
  1487. * procedures are possible, and may work better for particular environments.
  1488. *
  1489. *
  1490. * FILLING THE RATE TABLE
  1491. *
  1492. * Given a particular initial rate and mode, as determined by the rate
  1493. * scaling algorithm described below, the Linux driver uses the following
  1494. * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the
  1495. * Link Quality command:
  1496. *
  1497. *
  1498. * 1) If using High-throughput (HT) (SISO or MIMO) initial rate:
  1499. * a) Use this same initial rate for first 3 entries.
  1500. * b) Find next lower available rate using same mode (SISO or MIMO),
  1501. * use for next 3 entries. If no lower rate available, switch to
  1502. * legacy mode (no FAT channel, no MIMO, no short guard interval).
  1503. * c) If using MIMO, set command's mimo_delimiter to number of entries
  1504. * using MIMO (3 or 6).
  1505. * d) After trying 2 HT rates, switch to legacy mode (no FAT channel,
  1506. * no MIMO, no short guard interval), at the next lower bit rate
  1507. * (e.g. if second HT bit rate was 54, try 48 legacy), and follow
  1508. * legacy procedure for remaining table entries.
  1509. *
  1510. * 2) If using legacy initial rate:
  1511. * a) Use the initial rate for only one entry.
  1512. * b) For each following entry, reduce the rate to next lower available
  1513. * rate, until reaching the lowest available rate.
  1514. * c) When reducing rate, also switch antenna selection.
  1515. * d) Once lowest available rate is reached, repeat this rate until
  1516. * rate table is filled (16 entries), switching antenna each entry.
  1517. *
  1518. *
  1519. * ACCUMULATING HISTORY
  1520. *
  1521. * The rate scaling algorithm for 4965, as implemented in Linux driver, uses
  1522. * two sets of frame Tx success history: One for the current/active modulation
  1523. * mode, and one for a speculative/search mode that is being attempted. If the
  1524. * speculative mode turns out to be more effective (i.e. actual transfer
  1525. * rate is better), then the driver continues to use the speculative mode
  1526. * as the new current active mode.
  1527. *
  1528. * Each history set contains, separately for each possible rate, data for a
  1529. * sliding window of the 62 most recent tx attempts at that rate. The data
  1530. * includes a shifting bitmap of success(1)/failure(0), and sums of successful
  1531. * and attempted frames, from which the driver can additionally calculate a
  1532. * success ratio (success / attempted) and number of failures
  1533. * (attempted - success), and control the size of the window (attempted).
  1534. * The driver uses the bit map to remove successes from the success sum, as
  1535. * the oldest tx attempts fall out of the window.
  1536. *
  1537. * When the 4965 makes multiple tx attempts for a given frame, each attempt
  1538. * might be at a different rate, and have different modulation characteristics
  1539. * (e.g. antenna, fat channel, short guard interval), as set up in the rate
  1540. * scaling table in the Link Quality command. The driver must determine
  1541. * which rate table entry was used for each tx attempt, to determine which
  1542. * rate-specific history to update, and record only those attempts that
  1543. * match the modulation characteristics of the history set.
  1544. *
  1545. * When using block-ack (aggregation), all frames are transmitted at the same
  1546. * rate, since there is no per-attempt acknowledgement from the destination
  1547. * station. The Tx response struct iwl_tx_resp indicates the Tx rate in
  1548. * rate_n_flags field. After receiving a block-ack, the driver can update
  1549. * history for the entire block all at once.
  1550. *
  1551. *
  1552. * FINDING BEST STARTING RATE:
  1553. *
  1554. * When working with a selected initial modulation mode (see below), the
  1555. * driver attempts to find a best initial rate. The initial rate is the
  1556. * first entry in the Link Quality command's rate table.
  1557. *
  1558. * 1) Calculate actual throughput (success ratio * expected throughput, see
  1559. * table below) for current initial rate. Do this only if enough frames
  1560. * have been attempted to make the value meaningful: at least 6 failed
  1561. * tx attempts, or at least 8 successes. If not enough, don't try rate
  1562. * scaling yet.
  1563. *
  1564. * 2) Find available rates adjacent to current initial rate. Available means:
  1565. * a) supported by hardware &&
  1566. * b) supported by association &&
  1567. * c) within any constraints selected by user
  1568. *
  1569. * 3) Gather measured throughputs for adjacent rates. These might not have
  1570. * enough history to calculate a throughput. That's okay, we might try
  1571. * using one of them anyway!
  1572. *
  1573. * 4) Try decreasing rate if, for current rate:
  1574. * a) success ratio is < 15% ||
  1575. * b) lower adjacent rate has better measured throughput ||
  1576. * c) higher adjacent rate has worse throughput, and lower is unmeasured
  1577. *
  1578. * As a sanity check, if decrease was determined above, leave rate
  1579. * unchanged if:
  1580. * a) lower rate unavailable
  1581. * b) success ratio at current rate > 85% (very good)
  1582. * c) current measured throughput is better than expected throughput
  1583. * of lower rate (under perfect 100% tx conditions, see table below)
  1584. *
  1585. * 5) Try increasing rate if, for current rate:
  1586. * a) success ratio is < 15% ||
  1587. * b) both adjacent rates' throughputs are unmeasured (try it!) ||
  1588. * b) higher adjacent rate has better measured throughput ||
  1589. * c) lower adjacent rate has worse throughput, and higher is unmeasured
  1590. *
  1591. * As a sanity check, if increase was determined above, leave rate
  1592. * unchanged if:
  1593. * a) success ratio at current rate < 70%. This is not particularly
  1594. * good performance; higher rate is sure to have poorer success.
  1595. *
  1596. * 6) Re-evaluate the rate after each tx frame. If working with block-
  1597. * acknowledge, history and statistics may be calculated for the entire
  1598. * block (including prior history that fits within the history windows),
  1599. * before re-evaluation.
  1600. *
  1601. * FINDING BEST STARTING MODULATION MODE:
  1602. *
  1603. * After working with a modulation mode for a "while" (and doing rate scaling),
  1604. * the driver searches for a new initial mode in an attempt to improve
  1605. * throughput. The "while" is measured by numbers of attempted frames:
  1606. *
  1607. * For legacy mode, search for new mode after:
  1608. * 480 successful frames, or 160 failed frames
  1609. * For high-throughput modes (SISO or MIMO), search for new mode after:
  1610. * 4500 successful frames, or 400 failed frames
  1611. *
  1612. * Mode switch possibilities are (3 for each mode):
  1613. *
  1614. * For legacy:
  1615. * Change antenna, try SISO (if HT association), try MIMO (if HT association)
  1616. * For SISO:
  1617. * Change antenna, try MIMO, try shortened guard interval (SGI)
  1618. * For MIMO:
  1619. * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI)
  1620. *
  1621. * When trying a new mode, use the same bit rate as the old/current mode when
  1622. * trying antenna switches and shortened guard interval. When switching to
  1623. * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate
  1624. * for which the expected throughput (under perfect conditions) is about the
  1625. * same or slightly better than the actual measured throughput delivered by
  1626. * the old/current mode.
  1627. *
  1628. * Actual throughput can be estimated by multiplying the expected throughput
  1629. * by the success ratio (successful / attempted tx frames). Frame size is
  1630. * not considered in this calculation; it assumes that frame size will average
  1631. * out to be fairly consistent over several samples. The following are
  1632. * metric values for expected throughput assuming 100% success ratio.
  1633. * Only G band has support for CCK rates:
  1634. *
  1635. * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60
  1636. *
  1637. * G: 7 13 35 58 40 57 72 98 121 154 177 186 186
  1638. * A: 0 0 0 0 40 57 72 98 121 154 177 186 186
  1639. * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202
  1640. * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211
  1641. * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251
  1642. * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257
  1643. * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257
  1644. * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264
  1645. * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289
  1646. * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293
  1647. *
  1648. * After the new mode has been tried for a short while (minimum of 6 failed
  1649. * frames or 8 successful frames), compare success ratio and actual throughput
  1650. * estimate of the new mode with the old. If either is better with the new
  1651. * mode, continue to use the new mode.
  1652. *
  1653. * Continue comparing modes until all 3 possibilities have been tried.
  1654. * If moving from legacy to HT, try all 3 possibilities from the new HT
  1655. * mode. After trying all 3, a best mode is found. Continue to use this mode
  1656. * for the longer "while" described above (e.g. 480 successful frames for
  1657. * legacy), and then repeat the search process.
  1658. *
  1659. */
  1660. struct iwl_link_quality_cmd {
  1661. /* Index of destination/recipient station in uCode's station table */
  1662. u8 sta_id;
  1663. u8 reserved1;
  1664. __le16 control; /* not used */
  1665. struct iwl_link_qual_general_params general_params;
  1666. struct iwl_link_qual_agg_params agg_params;
  1667. /*
  1668. * Rate info; when using rate-scaling, Tx command's initial_rate_index
  1669. * specifies 1st Tx rate attempted, via index into this table.
  1670. * 4965 works its way through table when retrying Tx.
  1671. */
  1672. struct {
  1673. __le32 rate_n_flags; /* RATE_MCS_*, IWL_RATE_* */
  1674. } rs_table[LINK_QUAL_MAX_RETRY_NUM];
  1675. __le32 reserved2;
  1676. } __attribute__ ((packed));
  1677. /*
  1678. * REPLY_BT_CONFIG = 0x9b (command, has simple generic response)
  1679. *
  1680. * 3945 and 4965 support hardware handshake with Bluetooth device on
  1681. * same platform. Bluetooth device alerts wireless device when it will Tx;
  1682. * wireless device can delay or kill its own Tx to accomodate.
  1683. */
  1684. struct iwl4965_bt_cmd {
  1685. u8 flags;
  1686. u8 lead_time;
  1687. u8 max_kill;
  1688. u8 reserved;
  1689. __le32 kill_ack_mask;
  1690. __le32 kill_cts_mask;
  1691. } __attribute__ ((packed));
  1692. /******************************************************************************
  1693. * (6)
  1694. * Spectrum Management (802.11h) Commands, Responses, Notifications:
  1695. *
  1696. *****************************************************************************/
  1697. /*
  1698. * Spectrum Management
  1699. */
  1700. #define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \
  1701. RXON_FILTER_CTL2HOST_MSK | \
  1702. RXON_FILTER_ACCEPT_GRP_MSK | \
  1703. RXON_FILTER_DIS_DECRYPT_MSK | \
  1704. RXON_FILTER_DIS_GRP_DECRYPT_MSK | \
  1705. RXON_FILTER_ASSOC_MSK | \
  1706. RXON_FILTER_BCON_AWARE_MSK)
  1707. struct iwl4965_measure_channel {
  1708. __le32 duration; /* measurement duration in extended beacon
  1709. * format */
  1710. u8 channel; /* channel to measure */
  1711. u8 type; /* see enum iwl4965_measure_type */
  1712. __le16 reserved;
  1713. } __attribute__ ((packed));
  1714. /*
  1715. * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (command)
  1716. */
  1717. struct iwl4965_spectrum_cmd {
  1718. __le16 len; /* number of bytes starting from token */
  1719. u8 token; /* token id */
  1720. u8 id; /* measurement id -- 0 or 1 */
  1721. u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */
  1722. u8 periodic; /* 1 = periodic */
  1723. __le16 path_loss_timeout;
  1724. __le32 start_time; /* start time in extended beacon format */
  1725. __le32 reserved2;
  1726. __le32 flags; /* rxon flags */
  1727. __le32 filter_flags; /* rxon filter flags */
  1728. __le16 channel_count; /* minimum 1, maximum 10 */
  1729. __le16 reserved3;
  1730. struct iwl4965_measure_channel channels[10];
  1731. } __attribute__ ((packed));
  1732. /*
  1733. * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (response)
  1734. */
  1735. struct iwl4965_spectrum_resp {
  1736. u8 token;
  1737. u8 id; /* id of the prior command replaced, or 0xff */
  1738. __le16 status; /* 0 - command will be handled
  1739. * 1 - cannot handle (conflicts with another
  1740. * measurement) */
  1741. } __attribute__ ((packed));
  1742. enum iwl4965_measurement_state {
  1743. IWL_MEASUREMENT_START = 0,
  1744. IWL_MEASUREMENT_STOP = 1,
  1745. };
  1746. enum iwl4965_measurement_status {
  1747. IWL_MEASUREMENT_OK = 0,
  1748. IWL_MEASUREMENT_CONCURRENT = 1,
  1749. IWL_MEASUREMENT_CSA_CONFLICT = 2,
  1750. IWL_MEASUREMENT_TGH_CONFLICT = 3,
  1751. /* 4-5 reserved */
  1752. IWL_MEASUREMENT_STOPPED = 6,
  1753. IWL_MEASUREMENT_TIMEOUT = 7,
  1754. IWL_MEASUREMENT_PERIODIC_FAILED = 8,
  1755. };
  1756. #define NUM_ELEMENTS_IN_HISTOGRAM 8
  1757. struct iwl4965_measurement_histogram {
  1758. __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */
  1759. __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */
  1760. } __attribute__ ((packed));
  1761. /* clear channel availability counters */
  1762. struct iwl4965_measurement_cca_counters {
  1763. __le32 ofdm;
  1764. __le32 cck;
  1765. } __attribute__ ((packed));
  1766. enum iwl4965_measure_type {
  1767. IWL_MEASURE_BASIC = (1 << 0),
  1768. IWL_MEASURE_CHANNEL_LOAD = (1 << 1),
  1769. IWL_MEASURE_HISTOGRAM_RPI = (1 << 2),
  1770. IWL_MEASURE_HISTOGRAM_NOISE = (1 << 3),
  1771. IWL_MEASURE_FRAME = (1 << 4),
  1772. /* bits 5:6 are reserved */
  1773. IWL_MEASURE_IDLE = (1 << 7),
  1774. };
  1775. /*
  1776. * SPECTRUM_MEASURE_NOTIFICATION = 0x75 (notification only, not a command)
  1777. */
  1778. struct iwl4965_spectrum_notification {
  1779. u8 id; /* measurement id -- 0 or 1 */
  1780. u8 token;
  1781. u8 channel_index; /* index in measurement channel list */
  1782. u8 state; /* 0 - start, 1 - stop */
  1783. __le32 start_time; /* lower 32-bits of TSF */
  1784. u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */
  1785. u8 channel;
  1786. u8 type; /* see enum iwl4965_measurement_type */
  1787. u8 reserved1;
  1788. /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only
  1789. * valid if applicable for measurement type requested. */
  1790. __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */
  1791. __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */
  1792. __le32 cca_time; /* channel load time in usecs */
  1793. u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 -
  1794. * unidentified */
  1795. u8 reserved2[3];
  1796. struct iwl4965_measurement_histogram histogram;
  1797. __le32 stop_time; /* lower 32-bits of TSF */
  1798. __le32 status; /* see iwl4965_measurement_status */
  1799. } __attribute__ ((packed));
  1800. /******************************************************************************
  1801. * (7)
  1802. * Power Management Commands, Responses, Notifications:
  1803. *
  1804. *****************************************************************************/
  1805. /**
  1806. * struct iwl_powertable_cmd - Power Table Command
  1807. * @flags: See below:
  1808. *
  1809. * POWER_TABLE_CMD = 0x77 (command, has simple generic response)
  1810. *
  1811. * PM allow:
  1812. * bit 0 - '0' Driver not allow power management
  1813. * '1' Driver allow PM (use rest of parameters)
  1814. * uCode send sleep notifications:
  1815. * bit 1 - '0' Don't send sleep notification
  1816. * '1' send sleep notification (SEND_PM_NOTIFICATION)
  1817. * Sleep over DTIM
  1818. * bit 2 - '0' PM have to walk up every DTIM
  1819. * '1' PM could sleep over DTIM till listen Interval.
  1820. * PCI power managed
  1821. * bit 3 - '0' (PCI_CFG_LINK_CTRL & 0x1)
  1822. * '1' !(PCI_CFG_LINK_CTRL & 0x1)
  1823. * Force sleep Modes
  1824. * bit 31/30- '00' use both mac/xtal sleeps
  1825. * '01' force Mac sleep
  1826. * '10' force xtal sleep
  1827. * '11' Illegal set
  1828. *
  1829. * NOTE: if sleep_interval[SLEEP_INTRVL_TABLE_SIZE-1] > DTIM period then
  1830. * ucode assume sleep over DTIM is allowed and we don't need to wakeup
  1831. * for every DTIM.
  1832. */
  1833. #define IWL_POWER_VEC_SIZE 5
  1834. #define IWL_POWER_DRIVER_ALLOW_SLEEP_MSK __constant_cpu_to_le16(1 << 0)
  1835. #define IWL_POWER_SLEEP_OVER_DTIM_MSK __constant_cpu_to_le16(1 << 2)
  1836. #define IWL_POWER_PCI_PM_MSK __constant_cpu_to_le16(1 << 3)
  1837. #define IWL_POWER_FAST_PD __constant_cpu_to_le16(1 << 4)
  1838. struct iwl_powertable_cmd {
  1839. __le16 flags;
  1840. u8 keep_alive_seconds;
  1841. u8 debug_flags;
  1842. __le32 rx_data_timeout;
  1843. __le32 tx_data_timeout;
  1844. __le32 sleep_interval[IWL_POWER_VEC_SIZE];
  1845. __le32 keep_alive_beacons;
  1846. } __attribute__ ((packed));
  1847. /*
  1848. * PM_SLEEP_NOTIFICATION = 0x7A (notification only, not a command)
  1849. * 3945 and 4965 identical.
  1850. */
  1851. struct iwl4965_sleep_notification {
  1852. u8 pm_sleep_mode;
  1853. u8 pm_wakeup_src;
  1854. __le16 reserved;
  1855. __le32 sleep_time;
  1856. __le32 tsf_low;
  1857. __le32 bcon_timer;
  1858. } __attribute__ ((packed));
  1859. /* Sleep states. 3945 and 4965 identical. */
  1860. enum {
  1861. IWL_PM_NO_SLEEP = 0,
  1862. IWL_PM_SLP_MAC = 1,
  1863. IWL_PM_SLP_FULL_MAC_UNASSOCIATE = 2,
  1864. IWL_PM_SLP_FULL_MAC_CARD_STATE = 3,
  1865. IWL_PM_SLP_PHY = 4,
  1866. IWL_PM_SLP_REPENT = 5,
  1867. IWL_PM_WAKEUP_BY_TIMER = 6,
  1868. IWL_PM_WAKEUP_BY_DRIVER = 7,
  1869. IWL_PM_WAKEUP_BY_RFKILL = 8,
  1870. /* 3 reserved */
  1871. IWL_PM_NUM_OF_MODES = 12,
  1872. };
  1873. /*
  1874. * REPLY_CARD_STATE_CMD = 0xa0 (command, has simple generic response)
  1875. */
  1876. #define CARD_STATE_CMD_DISABLE 0x00 /* Put card to sleep */
  1877. #define CARD_STATE_CMD_ENABLE 0x01 /* Wake up card */
  1878. #define CARD_STATE_CMD_HALT 0x02 /* Power down permanently */
  1879. struct iwl4965_card_state_cmd {
  1880. __le32 status; /* CARD_STATE_CMD_* request new power state */
  1881. } __attribute__ ((packed));
  1882. /*
  1883. * CARD_STATE_NOTIFICATION = 0xa1 (notification only, not a command)
  1884. */
  1885. struct iwl4965_card_state_notif {
  1886. __le32 flags;
  1887. } __attribute__ ((packed));
  1888. #define HW_CARD_DISABLED 0x01
  1889. #define SW_CARD_DISABLED 0x02
  1890. #define RF_CARD_DISABLED 0x04
  1891. #define RXON_CARD_DISABLED 0x10
  1892. struct iwl_ct_kill_config {
  1893. __le32 reserved;
  1894. __le32 critical_temperature_M;
  1895. __le32 critical_temperature_R;
  1896. } __attribute__ ((packed));
  1897. /******************************************************************************
  1898. * (8)
  1899. * Scan Commands, Responses, Notifications:
  1900. *
  1901. *****************************************************************************/
  1902. #define SCAN_CHANNEL_TYPE_PASSIVE __constant_cpu_to_le32(0)
  1903. #define SCAN_CHANNEL_TYPE_ACTIVE __constant_cpu_to_le32(1)
  1904. /**
  1905. * struct iwl_scan_channel - entry in REPLY_SCAN_CMD channel table
  1906. *
  1907. * One for each channel in the scan list.
  1908. * Each channel can independently select:
  1909. * 1) SSID for directed active scans
  1910. * 2) Txpower setting (for rate specified within Tx command)
  1911. * 3) How long to stay on-channel (behavior may be modified by quiet_time,
  1912. * quiet_plcp_th, good_CRC_th)
  1913. *
  1914. * To avoid uCode errors, make sure the following are true (see comments
  1915. * under struct iwl_scan_cmd about max_out_time and quiet_time):
  1916. * 1) If using passive_dwell (i.e. passive_dwell != 0):
  1917. * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0)
  1918. * 2) quiet_time <= active_dwell
  1919. * 3) If restricting off-channel time (i.e. max_out_time !=0):
  1920. * passive_dwell < max_out_time
  1921. * active_dwell < max_out_time
  1922. */
  1923. struct iwl_scan_channel {
  1924. /*
  1925. * type is defined as:
  1926. * 0:0 1 = active, 0 = passive
  1927. * 1:20 SSID direct bit map; if a bit is set, then corresponding
  1928. * SSID IE is transmitted in probe request.
  1929. * 21:31 reserved
  1930. */
  1931. __le32 type;
  1932. __le16 channel; /* band is selected by iwl_scan_cmd "flags" field */
  1933. u8 tx_gain; /* gain for analog radio */
  1934. u8 dsp_atten; /* gain for DSP */
  1935. __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */
  1936. __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */
  1937. } __attribute__ ((packed));
  1938. /**
  1939. * struct iwl_ssid_ie - directed scan network information element
  1940. *
  1941. * Up to 4 of these may appear in REPLY_SCAN_CMD, selected by "type" field
  1942. * in struct iwl4965_scan_channel; each channel may select different ssids from
  1943. * among the 4 entries. SSID IEs get transmitted in reverse order of entry.
  1944. */
  1945. struct iwl_ssid_ie {
  1946. u8 id;
  1947. u8 len;
  1948. u8 ssid[32];
  1949. } __attribute__ ((packed));
  1950. #define PROBE_OPTION_MAX 0x14
  1951. #define TX_CMD_LIFE_TIME_INFINITE __constant_cpu_to_le32(0xFFFFFFFF)
  1952. #define IWL_GOOD_CRC_TH __constant_cpu_to_le16(1)
  1953. #define IWL_MAX_SCAN_SIZE 1024
  1954. /*
  1955. * REPLY_SCAN_CMD = 0x80 (command)
  1956. *
  1957. * The hardware scan command is very powerful; the driver can set it up to
  1958. * maintain (relatively) normal network traffic while doing a scan in the
  1959. * background. The max_out_time and suspend_time control the ratio of how
  1960. * long the device stays on an associated network channel ("service channel")
  1961. * vs. how long it's away from the service channel, i.e. tuned to other channels
  1962. * for scanning.
  1963. *
  1964. * max_out_time is the max time off-channel (in usec), and suspend_time
  1965. * is how long (in "extended beacon" format) that the scan is "suspended"
  1966. * after returning to the service channel. That is, suspend_time is the
  1967. * time that we stay on the service channel, doing normal work, between
  1968. * scan segments. The driver may set these parameters differently to support
  1969. * scanning when associated vs. not associated, and light vs. heavy traffic
  1970. * loads when associated.
  1971. *
  1972. * After receiving this command, the device's scan engine does the following;
  1973. *
  1974. * 1) Sends SCAN_START notification to driver
  1975. * 2) Checks to see if it has time to do scan for one channel
  1976. * 3) Sends NULL packet, with power-save (PS) bit set to 1,
  1977. * to tell AP that we're going off-channel
  1978. * 4) Tunes to first channel in scan list, does active or passive scan
  1979. * 5) Sends SCAN_RESULT notification to driver
  1980. * 6) Checks to see if it has time to do scan on *next* channel in list
  1981. * 7) Repeats 4-6 until it no longer has time to scan the next channel
  1982. * before max_out_time expires
  1983. * 8) Returns to service channel
  1984. * 9) Sends NULL packet with PS=0 to tell AP that we're back
  1985. * 10) Stays on service channel until suspend_time expires
  1986. * 11) Repeats entire process 2-10 until list is complete
  1987. * 12) Sends SCAN_COMPLETE notification
  1988. *
  1989. * For fast, efficient scans, the scan command also has support for staying on
  1990. * a channel for just a short time, if doing active scanning and getting no
  1991. * responses to the transmitted probe request. This time is controlled by
  1992. * quiet_time, and the number of received packets below which a channel is
  1993. * considered "quiet" is controlled by quiet_plcp_threshold.
  1994. *
  1995. * For active scanning on channels that have regulatory restrictions against
  1996. * blindly transmitting, the scan can listen before transmitting, to make sure
  1997. * that there is already legitimate activity on the channel. If enough
  1998. * packets are cleanly received on the channel (controlled by good_CRC_th,
  1999. * typical value 1), the scan engine starts transmitting probe requests.
  2000. *
  2001. * Driver must use separate scan commands for 2.4 vs. 5 GHz bands.
  2002. *
  2003. * To avoid uCode errors, see timing restrictions described under
  2004. * struct iwl_scan_channel.
  2005. */
  2006. struct iwl_scan_cmd {
  2007. __le16 len;
  2008. u8 reserved0;
  2009. u8 channel_count; /* # channels in channel list */
  2010. __le16 quiet_time; /* dwell only this # millisecs on quiet channel
  2011. * (only for active scan) */
  2012. __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */
  2013. __le16 good_CRC_th; /* passive -> active promotion threshold */
  2014. __le16 rx_chain; /* RXON_RX_CHAIN_* */
  2015. __le32 max_out_time; /* max usec to be away from associated (service)
  2016. * channel */
  2017. __le32 suspend_time; /* pause scan this long (in "extended beacon
  2018. * format") when returning to service chnl:
  2019. * 3945; 31:24 # beacons, 19:0 additional usec,
  2020. * 4965; 31:22 # beacons, 21:0 additional usec.
  2021. */
  2022. __le32 flags; /* RXON_FLG_* */
  2023. __le32 filter_flags; /* RXON_FILTER_* */
  2024. /* For active scans (set to all-0s for passive scans).
  2025. * Does not include payload. Must specify Tx rate; no rate scaling. */
  2026. struct iwl_tx_cmd tx_cmd;
  2027. /* For directed active scans (set to all-0s otherwise) */
  2028. struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
  2029. /*
  2030. * Probe request frame, followed by channel list.
  2031. *
  2032. * Size of probe request frame is specified by byte count in tx_cmd.
  2033. * Channel list follows immediately after probe request frame.
  2034. * Number of channels in list is specified by channel_count.
  2035. * Each channel in list is of type:
  2036. *
  2037. * struct iwl4965_scan_channel channels[0];
  2038. *
  2039. * NOTE: Only one band of channels can be scanned per pass. You
  2040. * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait
  2041. * for one scan to complete (i.e. receive SCAN_COMPLETE_NOTIFICATION)
  2042. * before requesting another scan.
  2043. */
  2044. u8 data[0];
  2045. } __attribute__ ((packed));
  2046. /* Can abort will notify by complete notification with abort status. */
  2047. #define CAN_ABORT_STATUS __constant_cpu_to_le32(0x1)
  2048. /* complete notification statuses */
  2049. #define ABORT_STATUS 0x2
  2050. /*
  2051. * REPLY_SCAN_CMD = 0x80 (response)
  2052. */
  2053. struct iwl_scanreq_notification {
  2054. __le32 status; /* 1: okay, 2: cannot fulfill request */
  2055. } __attribute__ ((packed));
  2056. /*
  2057. * SCAN_START_NOTIFICATION = 0x82 (notification only, not a command)
  2058. */
  2059. struct iwl_scanstart_notification {
  2060. __le32 tsf_low;
  2061. __le32 tsf_high;
  2062. __le32 beacon_timer;
  2063. u8 channel;
  2064. u8 band;
  2065. u8 reserved[2];
  2066. __le32 status;
  2067. } __attribute__ ((packed));
  2068. #define SCAN_OWNER_STATUS 0x1;
  2069. #define MEASURE_OWNER_STATUS 0x2;
  2070. #define NUMBER_OF_STATISTICS 1 /* first __le32 is good CRC */
  2071. /*
  2072. * SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command)
  2073. */
  2074. struct iwl_scanresults_notification {
  2075. u8 channel;
  2076. u8 band;
  2077. u8 reserved[2];
  2078. __le32 tsf_low;
  2079. __le32 tsf_high;
  2080. __le32 statistics[NUMBER_OF_STATISTICS];
  2081. } __attribute__ ((packed));
  2082. /*
  2083. * SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command)
  2084. */
  2085. struct iwl_scancomplete_notification {
  2086. u8 scanned_channels;
  2087. u8 status;
  2088. u8 reserved;
  2089. u8 last_channel;
  2090. __le32 tsf_low;
  2091. __le32 tsf_high;
  2092. } __attribute__ ((packed));
  2093. /******************************************************************************
  2094. * (9)
  2095. * IBSS/AP Commands and Notifications:
  2096. *
  2097. *****************************************************************************/
  2098. /*
  2099. * BEACON_NOTIFICATION = 0x90 (notification only, not a command)
  2100. */
  2101. struct iwl4965_beacon_notif {
  2102. struct iwl4965_tx_resp beacon_notify_hdr;
  2103. __le32 low_tsf;
  2104. __le32 high_tsf;
  2105. __le32 ibss_mgr_status;
  2106. } __attribute__ ((packed));
  2107. /*
  2108. * REPLY_TX_BEACON = 0x91 (command, has simple generic response)
  2109. */
  2110. struct iwl_tx_beacon_cmd {
  2111. struct iwl_tx_cmd tx;
  2112. __le16 tim_idx;
  2113. u8 tim_size;
  2114. u8 reserved1;
  2115. struct ieee80211_hdr frame[0]; /* beacon frame */
  2116. } __attribute__ ((packed));
  2117. /******************************************************************************
  2118. * (10)
  2119. * Statistics Commands and Notifications:
  2120. *
  2121. *****************************************************************************/
  2122. #define IWL_TEMP_CONVERT 260
  2123. #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
  2124. #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
  2125. #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
  2126. /* Used for passing to driver number of successes and failures per rate */
  2127. struct rate_histogram {
  2128. union {
  2129. __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
  2130. __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
  2131. __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
  2132. } success;
  2133. union {
  2134. __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
  2135. __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
  2136. __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
  2137. } failed;
  2138. } __attribute__ ((packed));
  2139. /* statistics command response */
  2140. struct statistics_rx_phy {
  2141. __le32 ina_cnt;
  2142. __le32 fina_cnt;
  2143. __le32 plcp_err;
  2144. __le32 crc32_err;
  2145. __le32 overrun_err;
  2146. __le32 early_overrun_err;
  2147. __le32 crc32_good;
  2148. __le32 false_alarm_cnt;
  2149. __le32 fina_sync_err_cnt;
  2150. __le32 sfd_timeout;
  2151. __le32 fina_timeout;
  2152. __le32 unresponded_rts;
  2153. __le32 rxe_frame_limit_overrun;
  2154. __le32 sent_ack_cnt;
  2155. __le32 sent_cts_cnt;
  2156. __le32 sent_ba_rsp_cnt;
  2157. __le32 dsp_self_kill;
  2158. __le32 mh_format_err;
  2159. __le32 re_acq_main_rssi_sum;
  2160. __le32 reserved3;
  2161. } __attribute__ ((packed));
  2162. struct statistics_rx_ht_phy {
  2163. __le32 plcp_err;
  2164. __le32 overrun_err;
  2165. __le32 early_overrun_err;
  2166. __le32 crc32_good;
  2167. __le32 crc32_err;
  2168. __le32 mh_format_err;
  2169. __le32 agg_crc32_good;
  2170. __le32 agg_mpdu_cnt;
  2171. __le32 agg_cnt;
  2172. __le32 reserved2;
  2173. } __attribute__ ((packed));
  2174. struct statistics_rx_non_phy {
  2175. __le32 bogus_cts; /* CTS received when not expecting CTS */
  2176. __le32 bogus_ack; /* ACK received when not expecting ACK */
  2177. __le32 non_bssid_frames; /* number of frames with BSSID that
  2178. * doesn't belong to the STA BSSID */
  2179. __le32 filtered_frames; /* count frames that were dumped in the
  2180. * filtering process */
  2181. __le32 non_channel_beacons; /* beacons with our bss id but not on
  2182. * our serving channel */
  2183. __le32 channel_beacons; /* beacons with our bss id and in our
  2184. * serving channel */
  2185. __le32 num_missed_bcon; /* number of missed beacons */
  2186. __le32 adc_rx_saturation_time; /* count in 0.8us units the time the
  2187. * ADC was in saturation */
  2188. __le32 ina_detection_search_time;/* total time (in 0.8us) searched
  2189. * for INA */
  2190. __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */
  2191. __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */
  2192. __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */
  2193. __le32 interference_data_flag; /* flag for interference data
  2194. * availability. 1 when data is
  2195. * available. */
  2196. __le32 channel_load; /* counts RX Enable time in uSec */
  2197. __le32 dsp_false_alarms; /* DSP false alarm (both OFDM
  2198. * and CCK) counter */
  2199. __le32 beacon_rssi_a;
  2200. __le32 beacon_rssi_b;
  2201. __le32 beacon_rssi_c;
  2202. __le32 beacon_energy_a;
  2203. __le32 beacon_energy_b;
  2204. __le32 beacon_energy_c;
  2205. } __attribute__ ((packed));
  2206. struct statistics_rx {
  2207. struct statistics_rx_phy ofdm;
  2208. struct statistics_rx_phy cck;
  2209. struct statistics_rx_non_phy general;
  2210. struct statistics_rx_ht_phy ofdm_ht;
  2211. } __attribute__ ((packed));
  2212. struct statistics_tx_non_phy_agg {
  2213. __le32 ba_timeout;
  2214. __le32 ba_reschedule_frames;
  2215. __le32 scd_query_agg_frame_cnt;
  2216. __le32 scd_query_no_agg;
  2217. __le32 scd_query_agg;
  2218. __le32 scd_query_mismatch;
  2219. __le32 frame_not_ready;
  2220. __le32 underrun;
  2221. __le32 bt_prio_kill;
  2222. __le32 rx_ba_rsp_cnt;
  2223. __le32 reserved2;
  2224. __le32 reserved3;
  2225. } __attribute__ ((packed));
  2226. struct statistics_tx {
  2227. __le32 preamble_cnt;
  2228. __le32 rx_detected_cnt;
  2229. __le32 bt_prio_defer_cnt;
  2230. __le32 bt_prio_kill_cnt;
  2231. __le32 few_bytes_cnt;
  2232. __le32 cts_timeout;
  2233. __le32 ack_timeout;
  2234. __le32 expected_ack_cnt;
  2235. __le32 actual_ack_cnt;
  2236. __le32 dump_msdu_cnt;
  2237. __le32 burst_abort_next_frame_mismatch_cnt;
  2238. __le32 burst_abort_missing_next_frame_cnt;
  2239. __le32 cts_timeout_collision;
  2240. __le32 ack_or_ba_timeout_collision;
  2241. struct statistics_tx_non_phy_agg agg;
  2242. } __attribute__ ((packed));
  2243. struct statistics_dbg {
  2244. __le32 burst_check;
  2245. __le32 burst_count;
  2246. __le32 reserved[4];
  2247. } __attribute__ ((packed));
  2248. struct statistics_div {
  2249. __le32 tx_on_a;
  2250. __le32 tx_on_b;
  2251. __le32 exec_time;
  2252. __le32 probe_time;
  2253. __le32 reserved1;
  2254. __le32 reserved2;
  2255. } __attribute__ ((packed));
  2256. struct statistics_general {
  2257. __le32 temperature;
  2258. __le32 temperature_m;
  2259. struct statistics_dbg dbg;
  2260. __le32 sleep_time;
  2261. __le32 slots_out;
  2262. __le32 slots_idle;
  2263. __le32 ttl_timestamp;
  2264. struct statistics_div div;
  2265. __le32 rx_enable_counter;
  2266. __le32 reserved1;
  2267. __le32 reserved2;
  2268. __le32 reserved3;
  2269. } __attribute__ ((packed));
  2270. /*
  2271. * REPLY_STATISTICS_CMD = 0x9c,
  2272. * 3945 and 4965 identical.
  2273. *
  2274. * This command triggers an immediate response containing uCode statistics.
  2275. * The response is in the same format as STATISTICS_NOTIFICATION 0x9d, below.
  2276. *
  2277. * If the CLEAR_STATS configuration flag is set, uCode will clear its
  2278. * internal copy of the statistics (counters) after issuing the response.
  2279. * This flag does not affect STATISTICS_NOTIFICATIONs after beacons (see below).
  2280. *
  2281. * If the DISABLE_NOTIF configuration flag is set, uCode will not issue
  2282. * STATISTICS_NOTIFICATIONs after received beacons (see below). This flag
  2283. * does not affect the response to the REPLY_STATISTICS_CMD 0x9c itself.
  2284. */
  2285. #define IWL_STATS_CONF_CLEAR_STATS __constant_cpu_to_le32(0x1) /* see above */
  2286. #define IWL_STATS_CONF_DISABLE_NOTIF __constant_cpu_to_le32(0x2)/* see above */
  2287. struct iwl_statistics_cmd {
  2288. __le32 configuration_flags; /* IWL_STATS_CONF_* */
  2289. } __attribute__ ((packed));
  2290. /*
  2291. * STATISTICS_NOTIFICATION = 0x9d (notification only, not a command)
  2292. *
  2293. * By default, uCode issues this notification after receiving a beacon
  2294. * while associated. To disable this behavior, set DISABLE_NOTIF flag in the
  2295. * REPLY_STATISTICS_CMD 0x9c, above.
  2296. *
  2297. * Statistics counters continue to increment beacon after beacon, but are
  2298. * cleared when changing channels or when driver issues REPLY_STATISTICS_CMD
  2299. * 0x9c with CLEAR_STATS bit set (see above).
  2300. *
  2301. * uCode also issues this notification during scans. uCode clears statistics
  2302. * appropriately so that each notification contains statistics for only the
  2303. * one channel that has just been scanned.
  2304. */
  2305. #define STATISTICS_REPLY_FLG_BAND_24G_MSK __constant_cpu_to_le32(0x2)
  2306. #define STATISTICS_REPLY_FLG_FAT_MODE_MSK __constant_cpu_to_le32(0x8)
  2307. struct iwl_notif_statistics {
  2308. __le32 flag;
  2309. struct statistics_rx rx;
  2310. struct statistics_tx tx;
  2311. struct statistics_general general;
  2312. } __attribute__ ((packed));
  2313. /*
  2314. * MISSED_BEACONS_NOTIFICATION = 0xa2 (notification only, not a command)
  2315. */
  2316. /* if ucode missed CONSECUTIVE_MISSED_BCONS_TH beacons in a row,
  2317. * then this notification will be sent. */
  2318. #define CONSECUTIVE_MISSED_BCONS_TH 20
  2319. struct iwl4965_missed_beacon_notif {
  2320. __le32 consequtive_missed_beacons;
  2321. __le32 total_missed_becons;
  2322. __le32 num_expected_beacons;
  2323. __le32 num_recvd_beacons;
  2324. } __attribute__ ((packed));
  2325. /******************************************************************************
  2326. * (11)
  2327. * Rx Calibration Commands:
  2328. *
  2329. * With the uCode used for open source drivers, most Tx calibration (except
  2330. * for Tx Power) and most Rx calibration is done by uCode during the
  2331. * "initialize" phase of uCode boot. Driver must calibrate only:
  2332. *
  2333. * 1) Tx power (depends on temperature), described elsewhere
  2334. * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas)
  2335. * 3) Receiver sensitivity (to optimize signal detection)
  2336. *
  2337. *****************************************************************************/
  2338. /**
  2339. * SENSITIVITY_CMD = 0xa8 (command, has simple generic response)
  2340. *
  2341. * This command sets up the Rx signal detector for a sensitivity level that
  2342. * is high enough to lock onto all signals within the associated network,
  2343. * but low enough to ignore signals that are below a certain threshold, so as
  2344. * not to have too many "false alarms". False alarms are signals that the
  2345. * Rx DSP tries to lock onto, but then discards after determining that they
  2346. * are noise.
  2347. *
  2348. * The optimum number of false alarms is between 5 and 50 per 200 TUs
  2349. * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e.
  2350. * time listening, not transmitting). Driver must adjust sensitivity so that
  2351. * the ratio of actual false alarms to actual Rx time falls within this range.
  2352. *
  2353. * While associated, uCode delivers STATISTICS_NOTIFICATIONs after each
  2354. * received beacon. These provide information to the driver to analyze the
  2355. * sensitivity. Don't analyze statistics that come in from scanning, or any
  2356. * other non-associated-network source. Pertinent statistics include:
  2357. *
  2358. * From "general" statistics (struct statistics_rx_non_phy):
  2359. *
  2360. * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level)
  2361. * Measure of energy of desired signal. Used for establishing a level
  2362. * below which the device does not detect signals.
  2363. *
  2364. * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB)
  2365. * Measure of background noise in silent period after beacon.
  2366. *
  2367. * channel_load
  2368. * uSecs of actual Rx time during beacon period (varies according to
  2369. * how much time was spent transmitting).
  2370. *
  2371. * From "cck" and "ofdm" statistics (struct statistics_rx_phy), separately:
  2372. *
  2373. * false_alarm_cnt
  2374. * Signal locks abandoned early (before phy-level header).
  2375. *
  2376. * plcp_err
  2377. * Signal locks abandoned late (during phy-level header).
  2378. *
  2379. * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from
  2380. * beacon to beacon, i.e. each value is an accumulation of all errors
  2381. * before and including the latest beacon. Values will wrap around to 0
  2382. * after counting up to 2^32 - 1. Driver must differentiate vs.
  2383. * previous beacon's values to determine # false alarms in the current
  2384. * beacon period.
  2385. *
  2386. * Total number of false alarms = false_alarms + plcp_errs
  2387. *
  2388. * For OFDM, adjust the following table entries in struct iwl_sensitivity_cmd
  2389. * (notice that the start points for OFDM are at or close to settings for
  2390. * maximum sensitivity):
  2391. *
  2392. * START / MIN / MAX
  2393. * HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX 90 / 85 / 120
  2394. * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX 170 / 170 / 210
  2395. * HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX 105 / 105 / 140
  2396. * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX 220 / 220 / 270
  2397. *
  2398. * If actual rate of OFDM false alarms (+ plcp_errors) is too high
  2399. * (greater than 50 for each 204.8 msecs listening), reduce sensitivity
  2400. * by *adding* 1 to all 4 of the table entries above, up to the max for
  2401. * each entry. Conversely, if false alarm rate is too low (less than 5
  2402. * for each 204.8 msecs listening), *subtract* 1 from each entry to
  2403. * increase sensitivity.
  2404. *
  2405. * For CCK sensitivity, keep track of the following:
  2406. *
  2407. * 1). 20-beacon history of maximum background noise, indicated by
  2408. * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the
  2409. * 3 receivers. For any given beacon, the "silence reference" is
  2410. * the maximum of last 60 samples (20 beacons * 3 receivers).
  2411. *
  2412. * 2). 10-beacon history of strongest signal level, as indicated
  2413. * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers,
  2414. * i.e. the strength of the signal through the best receiver at the
  2415. * moment. These measurements are "upside down", with lower values
  2416. * for stronger signals, so max energy will be *minimum* value.
  2417. *
  2418. * Then for any given beacon, the driver must determine the *weakest*
  2419. * of the strongest signals; this is the minimum level that needs to be
  2420. * successfully detected, when using the best receiver at the moment.
  2421. * "Max cck energy" is the maximum (higher value means lower energy!)
  2422. * of the last 10 minima. Once this is determined, driver must add
  2423. * a little margin by adding "6" to it.
  2424. *
  2425. * 3). Number of consecutive beacon periods with too few false alarms.
  2426. * Reset this to 0 at the first beacon period that falls within the
  2427. * "good" range (5 to 50 false alarms per 204.8 milliseconds rx).
  2428. *
  2429. * Then, adjust the following CCK table entries in struct iwl_sensitivity_cmd
  2430. * (notice that the start points for CCK are at maximum sensitivity):
  2431. *
  2432. * START / MIN / MAX
  2433. * HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX 125 / 125 / 200
  2434. * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX 200 / 200 / 400
  2435. * HD_MIN_ENERGY_CCK_DET_INDEX 100 / 0 / 100
  2436. *
  2437. * If actual rate of CCK false alarms (+ plcp_errors) is too high
  2438. * (greater than 50 for each 204.8 msecs listening), method for reducing
  2439. * sensitivity is:
  2440. *
  2441. * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
  2442. * up to max 400.
  2443. *
  2444. * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is < 160,
  2445. * sensitivity has been reduced a significant amount; bring it up to
  2446. * a moderate 161. Otherwise, *add* 3, up to max 200.
  2447. *
  2448. * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is > 160,
  2449. * sensitivity has been reduced only a moderate or small amount;
  2450. * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_INDEX,
  2451. * down to min 0. Otherwise (if gain has been significantly reduced),
  2452. * don't change the HD_MIN_ENERGY_CCK_DET_INDEX value.
  2453. *
  2454. * b) Save a snapshot of the "silence reference".
  2455. *
  2456. * If actual rate of CCK false alarms (+ plcp_errors) is too low
  2457. * (less than 5 for each 204.8 msecs listening), method for increasing
  2458. * sensitivity is used only if:
  2459. *
  2460. * 1a) Previous beacon did not have too many false alarms
  2461. * 1b) AND difference between previous "silence reference" and current
  2462. * "silence reference" (prev - current) is 2 or more,
  2463. * OR 2) 100 or more consecutive beacon periods have had rate of
  2464. * less than 5 false alarms per 204.8 milliseconds rx time.
  2465. *
  2466. * Method for increasing sensitivity:
  2467. *
  2468. * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX,
  2469. * down to min 125.
  2470. *
  2471. * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
  2472. * down to min 200.
  2473. *
  2474. * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_INDEX, up to max 100.
  2475. *
  2476. * If actual rate of CCK false alarms (+ plcp_errors) is within good range
  2477. * (between 5 and 50 for each 204.8 msecs listening):
  2478. *
  2479. * 1) Save a snapshot of the silence reference.
  2480. *
  2481. * 2) If previous beacon had too many CCK false alarms (+ plcp_errors),
  2482. * give some extra margin to energy threshold by *subtracting* 8
  2483. * from value in HD_MIN_ENERGY_CCK_DET_INDEX.
  2484. *
  2485. * For all cases (too few, too many, good range), make sure that the CCK
  2486. * detection threshold (energy) is below the energy level for robust
  2487. * detection over the past 10 beacon periods, the "Max cck energy".
  2488. * Lower values mean higher energy; this means making sure that the value
  2489. * in HD_MIN_ENERGY_CCK_DET_INDEX is at or *above* "Max cck energy".
  2490. *
  2491. * Driver should set the following entries to fixed values:
  2492. *
  2493. * HD_MIN_ENERGY_OFDM_DET_INDEX 100
  2494. * HD_BARKER_CORR_TH_ADD_MIN_INDEX 190
  2495. * HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX 390
  2496. * HD_OFDM_ENERGY_TH_IN_INDEX 62
  2497. */
  2498. /*
  2499. * Table entries in SENSITIVITY_CMD (struct iwl_sensitivity_cmd)
  2500. */
  2501. #define HD_TABLE_SIZE (11) /* number of entries */
  2502. #define HD_MIN_ENERGY_CCK_DET_INDEX (0) /* table indexes */
  2503. #define HD_MIN_ENERGY_OFDM_DET_INDEX (1)
  2504. #define HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX (2)
  2505. #define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX (3)
  2506. #define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX (4)
  2507. #define HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX (5)
  2508. #define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX (6)
  2509. #define HD_BARKER_CORR_TH_ADD_MIN_INDEX (7)
  2510. #define HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX (8)
  2511. #define HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX (9)
  2512. #define HD_OFDM_ENERGY_TH_IN_INDEX (10)
  2513. /* Control field in struct iwl_sensitivity_cmd */
  2514. #define SENSITIVITY_CMD_CONTROL_DEFAULT_TABLE __constant_cpu_to_le16(0)
  2515. #define SENSITIVITY_CMD_CONTROL_WORK_TABLE __constant_cpu_to_le16(1)
  2516. /**
  2517. * struct iwl_sensitivity_cmd
  2518. * @control: (1) updates working table, (0) updates default table
  2519. * @table: energy threshold values, use HD_* as index into table
  2520. *
  2521. * Always use "1" in "control" to update uCode's working table and DSP.
  2522. */
  2523. struct iwl_sensitivity_cmd {
  2524. __le16 control; /* always use "1" */
  2525. __le16 table[HD_TABLE_SIZE]; /* use HD_* as index */
  2526. } __attribute__ ((packed));
  2527. /**
  2528. * REPLY_PHY_CALIBRATION_CMD = 0xb0 (command, has simple generic response)
  2529. *
  2530. * This command sets the relative gains of 4965's 3 radio receiver chains.
  2531. *
  2532. * After the first association, driver should accumulate signal and noise
  2533. * statistics from the STATISTICS_NOTIFICATIONs that follow the first 20
  2534. * beacons from the associated network (don't collect statistics that come
  2535. * in from scanning, or any other non-network source).
  2536. *
  2537. * DISCONNECTED ANTENNA:
  2538. *
  2539. * Driver should determine which antennas are actually connected, by comparing
  2540. * average beacon signal levels for the 3 Rx chains. Accumulate (add) the
  2541. * following values over 20 beacons, one accumulator for each of the chains
  2542. * a/b/c, from struct statistics_rx_non_phy:
  2543. *
  2544. * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB)
  2545. *
  2546. * Find the strongest signal from among a/b/c. Compare the other two to the
  2547. * strongest. If any signal is more than 15 dB (times 20, unless you
  2548. * divide the accumulated values by 20) below the strongest, the driver
  2549. * considers that antenna to be disconnected, and should not try to use that
  2550. * antenna/chain for Rx or Tx. If both A and B seem to be disconnected,
  2551. * driver should declare the stronger one as connected, and attempt to use it
  2552. * (A and B are the only 2 Tx chains!).
  2553. *
  2554. *
  2555. * RX BALANCE:
  2556. *
  2557. * Driver should balance the 3 receivers (but just the ones that are connected
  2558. * to antennas, see above) for gain, by comparing the average signal levels
  2559. * detected during the silence after each beacon (background noise).
  2560. * Accumulate (add) the following values over 20 beacons, one accumulator for
  2561. * each of the chains a/b/c, from struct statistics_rx_non_phy:
  2562. *
  2563. * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB)
  2564. *
  2565. * Find the weakest background noise level from among a/b/c. This Rx chain
  2566. * will be the reference, with 0 gain adjustment. Attenuate other channels by
  2567. * finding noise difference:
  2568. *
  2569. * (accum_noise[i] - accum_noise[reference]) / 30
  2570. *
  2571. * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB.
  2572. * For use in diff_gain_[abc] fields of struct iwl_calibration_cmd, the
  2573. * driver should limit the difference results to a range of 0-3 (0-4.5 dB),
  2574. * and set bit 2 to indicate "reduce gain". The value for the reference
  2575. * (weakest) chain should be "0".
  2576. *
  2577. * diff_gain_[abc] bit fields:
  2578. * 2: (1) reduce gain, (0) increase gain
  2579. * 1-0: amount of gain, units of 1.5 dB
  2580. */
  2581. /* "Differential Gain" opcode used in REPLY_PHY_CALIBRATION_CMD. */
  2582. #define PHY_CALIBRATE_DIFF_GAIN_CMD (7)
  2583. struct iwl4965_calibration_cmd {
  2584. u8 opCode; /* PHY_CALIBRATE_DIFF_GAIN_CMD (7) */
  2585. u8 flags; /* not used */
  2586. __le16 reserved;
  2587. s8 diff_gain_a; /* see above */
  2588. s8 diff_gain_b;
  2589. s8 diff_gain_c;
  2590. u8 reserved1;
  2591. } __attribute__ ((packed));
  2592. /* Phy calibration command for 5000 series */
  2593. enum {
  2594. IWL5000_PHY_CALIBRATE_DC_CMD = 8,
  2595. IWL5000_PHY_CALIBRATE_LO_CMD = 9,
  2596. IWL5000_PHY_CALIBRATE_RX_BB_CMD = 10,
  2597. IWL5000_PHY_CALIBRATE_TX_IQ_CMD = 11,
  2598. IWL5000_PHY_CALIBRATE_RX_IQ_CMD = 12,
  2599. IWL5000_PHY_CALIBRATION_NOISE_CMD = 13,
  2600. IWL5000_PHY_CALIBRATE_AGC_TABLE_CMD = 14,
  2601. IWL5000_PHY_CALIBRATE_CRYSTAL_FRQ_CMD = 15,
  2602. IWL5000_PHY_CALIBRATE_BASE_BAND_CMD = 16,
  2603. IWL5000_PHY_CALIBRATE_TX_IQ_PERD_CMD = 17,
  2604. IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD = 18,
  2605. IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD = 19,
  2606. };
  2607. struct iwl_cal_xtal_freq {
  2608. u8 cap_pin1;
  2609. u8 cap_pin2;
  2610. } __attribute__ ((packed));
  2611. #define IWL_CALIB_INIT_CFG_ALL __constant_cpu_to_le32(0xffffffff)
  2612. struct iwl_calib_cfg_elmnt_s {
  2613. __le32 is_enable;
  2614. __le32 start;
  2615. __le32 send_res;
  2616. __le32 apply_res;
  2617. __le32 reserved;
  2618. } __attribute__ ((packed));
  2619. struct iwl_calib_cfg_status_s {
  2620. struct iwl_calib_cfg_elmnt_s once;
  2621. struct iwl_calib_cfg_elmnt_s perd;
  2622. __le32 flags;
  2623. } __attribute__ ((packed));
  2624. struct iwl5000_calib_cfg_cmd {
  2625. struct iwl_calib_cfg_status_s ucd_calib_cfg;
  2626. struct iwl_calib_cfg_status_s drv_calib_cfg;
  2627. __le32 reserved1;
  2628. } __attribute__ ((packed));
  2629. struct iwl5000_calib_hdr {
  2630. u8 op_code;
  2631. u8 first_group;
  2632. u8 groups_num;
  2633. u8 data_valid;
  2634. } __attribute__ ((packed));
  2635. struct iwl5000_calib_cmd {
  2636. struct iwl5000_calib_hdr hdr;
  2637. u8 data[0];
  2638. } __attribute__ ((packed));
  2639. struct iwl5000_calibration_chain_noise_reset_cmd {
  2640. u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD */
  2641. u8 flags; /* not used */
  2642. __le16 reserved;
  2643. } __attribute__ ((packed));
  2644. struct iwl5000_calibration_chain_noise_gain_cmd {
  2645. u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD */
  2646. u8 flags; /* not used */
  2647. __le16 reserved;
  2648. u8 delta_gain_1;
  2649. u8 delta_gain_2;
  2650. __le16 reserved1;
  2651. } __attribute__ ((packed));
  2652. /******************************************************************************
  2653. * (12)
  2654. * Miscellaneous Commands:
  2655. *
  2656. *****************************************************************************/
  2657. /*
  2658. * LEDs Command & Response
  2659. * REPLY_LEDS_CMD = 0x48 (command, has simple generic response)
  2660. *
  2661. * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field),
  2662. * this command turns it on or off, or sets up a periodic blinking cycle.
  2663. */
  2664. struct iwl_led_cmd {
  2665. __le32 interval; /* "interval" in uSec */
  2666. u8 id; /* 1: Activity, 2: Link, 3: Tech */
  2667. u8 off; /* # intervals off while blinking;
  2668. * "0", with >0 "on" value, turns LED on */
  2669. u8 on; /* # intervals on while blinking;
  2670. * "0", regardless of "off", turns LED off */
  2671. u8 reserved;
  2672. } __attribute__ ((packed));
  2673. /*
  2674. * Coexistence WIFI/WIMAX Command
  2675. * COEX_PRIORITY_TABLE_CMD = 0x5a
  2676. *
  2677. */
  2678. enum {
  2679. COEX_UNASSOC_IDLE = 0,
  2680. COEX_UNASSOC_MANUAL_SCAN = 1,
  2681. COEX_UNASSOC_AUTO_SCAN = 2,
  2682. COEX_CALIBRATION = 3,
  2683. COEX_PERIODIC_CALIBRATION = 4,
  2684. COEX_CONNECTION_ESTAB = 5,
  2685. COEX_ASSOCIATED_IDLE = 6,
  2686. COEX_ASSOC_MANUAL_SCAN = 7,
  2687. COEX_ASSOC_AUTO_SCAN = 8,
  2688. COEX_ASSOC_ACTIVE_LEVEL = 9,
  2689. COEX_RF_ON = 10,
  2690. COEX_RF_OFF = 11,
  2691. COEX_STAND_ALONE_DEBUG = 12,
  2692. COEX_IPAN_ASSOC_LEVEL = 13,
  2693. COEX_RSRVD1 = 14,
  2694. COEX_RSRVD2 = 15,
  2695. COEX_NUM_OF_EVENTS = 16
  2696. };
  2697. struct iwl_wimax_coex_event_entry {
  2698. u8 request_prio;
  2699. u8 win_medium_prio;
  2700. u8 reserved;
  2701. u8 flags;
  2702. } __attribute__ ((packed));
  2703. /* COEX flag masks */
  2704. /* Staion table is valid */
  2705. #define COEX_FLAGS_STA_TABLE_VALID_MSK (0x1)
  2706. /* UnMask wakeup src at unassociated sleep */
  2707. #define COEX_FLAGS_UNASSOC_WA_UNMASK_MSK (0x4)
  2708. /* UnMask wakeup src at associated sleep */
  2709. #define COEX_FLAGS_ASSOC_WA_UNMASK_MSK (0x8)
  2710. /* Enable CoEx feature. */
  2711. #define COEX_FLAGS_COEX_ENABLE_MSK (0x80)
  2712. struct iwl_wimax_coex_cmd {
  2713. u8 flags;
  2714. u8 reserved[3];
  2715. struct iwl_wimax_coex_event_entry sta_prio[COEX_NUM_OF_EVENTS];
  2716. } __attribute__ ((packed));
  2717. /******************************************************************************
  2718. * (13)
  2719. * Union of all expected notifications/responses:
  2720. *
  2721. *****************************************************************************/
  2722. struct iwl_rx_packet {
  2723. __le32 len;
  2724. struct iwl_cmd_header hdr;
  2725. union {
  2726. struct iwl_alive_resp alive_frame;
  2727. struct iwl4965_rx_frame rx_frame;
  2728. struct iwl4965_tx_resp tx_resp;
  2729. struct iwl4965_spectrum_notification spectrum_notif;
  2730. struct iwl4965_csa_notification csa_notif;
  2731. struct iwl_error_resp err_resp;
  2732. struct iwl4965_card_state_notif card_state_notif;
  2733. struct iwl4965_beacon_notif beacon_status;
  2734. struct iwl_add_sta_resp add_sta;
  2735. struct iwl_rem_sta_resp rem_sta;
  2736. struct iwl4965_sleep_notification sleep_notif;
  2737. struct iwl4965_spectrum_resp spectrum;
  2738. struct iwl_notif_statistics stats;
  2739. struct iwl_compressed_ba_resp compressed_ba;
  2740. struct iwl4965_missed_beacon_notif missed_beacon;
  2741. __le32 status;
  2742. u8 raw[0];
  2743. } u;
  2744. } __attribute__ ((packed));
  2745. #define IWL_RX_FRAME_SIZE (4 + sizeof(struct iwl4965_rx_frame))
  2746. #endif /* __iwl4965_commands_h__ */