1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2 /*
3  * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
4  * Copyright (C) 2017 Intel Deutschland GmbH
5  */
6 #ifndef __iwl_fw_api_rs_h__
7 #define __iwl_fw_api_rs_h__
8 
9 #include "mac.h"
10 
11 /**
12  * enum iwl_tlc_mng_cfg_flags_enum - options for TLC config flags
13  * @IWL_TLC_MNG_CFG_FLAGS_STBC_MSK: enable STBC. For HE this enables STBC for
14  *				    bandwidths <= 80MHz
15  * @IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK: enable LDPC
16  * @IWL_TLC_MNG_CFG_FLAGS_HE_STBC_160MHZ_MSK: enable STBC in HE at 160MHz
17  *					      bandwidth
18  * @IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK: enable HE Dual Carrier Modulation
19  *					    for BPSK (MCS 0) with 1 spatial
20  *					    stream
21  * @IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_2_MSK: enable HE Dual Carrier Modulation
22  *					    for BPSK (MCS 0) with 2 spatial
23  *					    streams
24  */
25 enum iwl_tlc_mng_cfg_flags {
26 	IWL_TLC_MNG_CFG_FLAGS_STBC_MSK			= BIT(0),
27 	IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK			= BIT(1),
28 	IWL_TLC_MNG_CFG_FLAGS_HE_STBC_160MHZ_MSK	= BIT(2),
29 	IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK		= BIT(3),
30 	IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_2_MSK		= BIT(4),
31 };
32 
33 /**
34  * enum iwl_tlc_mng_cfg_cw - channel width options
35  * @IWL_TLC_MNG_CH_WIDTH_20MHZ: 20MHZ channel
36  * @IWL_TLC_MNG_CH_WIDTH_40MHZ: 40MHZ channel
37  * @IWL_TLC_MNG_CH_WIDTH_80MHZ: 80MHZ channel
38  * @IWL_TLC_MNG_CH_WIDTH_160MHZ: 160MHZ channel
39  * @IWL_TLC_MNG_CH_WIDTH_LAST: maximum value
40  */
41 enum iwl_tlc_mng_cfg_cw {
42 	IWL_TLC_MNG_CH_WIDTH_20MHZ,
43 	IWL_TLC_MNG_CH_WIDTH_40MHZ,
44 	IWL_TLC_MNG_CH_WIDTH_80MHZ,
45 	IWL_TLC_MNG_CH_WIDTH_160MHZ,
46 	IWL_TLC_MNG_CH_WIDTH_LAST = IWL_TLC_MNG_CH_WIDTH_160MHZ,
47 };
48 
49 /**
50  * enum iwl_tlc_mng_cfg_chains - possible chains
51  * @IWL_TLC_MNG_CHAIN_A_MSK: chain A
52  * @IWL_TLC_MNG_CHAIN_B_MSK: chain B
53  */
54 enum iwl_tlc_mng_cfg_chains {
55 	IWL_TLC_MNG_CHAIN_A_MSK = BIT(0),
56 	IWL_TLC_MNG_CHAIN_B_MSK = BIT(1),
57 };
58 
59 /**
60  * enum iwl_tlc_mng_cfg_mode - supported modes
61  * @IWL_TLC_MNG_MODE_CCK: enable CCK
62  * @IWL_TLC_MNG_MODE_OFDM_NON_HT: enable OFDM (non HT)
63  * @IWL_TLC_MNG_MODE_NON_HT: enable non HT
64  * @IWL_TLC_MNG_MODE_HT: enable HT
65  * @IWL_TLC_MNG_MODE_VHT: enable VHT
66  * @IWL_TLC_MNG_MODE_HE: enable HE
67  * @IWL_TLC_MNG_MODE_INVALID: invalid value
68  * @IWL_TLC_MNG_MODE_NUM: a count of possible modes
69  */
70 enum iwl_tlc_mng_cfg_mode {
71 	IWL_TLC_MNG_MODE_CCK = 0,
72 	IWL_TLC_MNG_MODE_OFDM_NON_HT = IWL_TLC_MNG_MODE_CCK,
73 	IWL_TLC_MNG_MODE_NON_HT = IWL_TLC_MNG_MODE_CCK,
74 	IWL_TLC_MNG_MODE_HT,
75 	IWL_TLC_MNG_MODE_VHT,
76 	IWL_TLC_MNG_MODE_HE,
77 	IWL_TLC_MNG_MODE_INVALID,
78 	IWL_TLC_MNG_MODE_NUM = IWL_TLC_MNG_MODE_INVALID,
79 };
80 
81 /**
82  * enum iwl_tlc_mng_ht_rates - HT/VHT/HE rates
83  * @IWL_TLC_MNG_HT_RATE_MCS0: index of MCS0
84  * @IWL_TLC_MNG_HT_RATE_MCS1: index of MCS1
85  * @IWL_TLC_MNG_HT_RATE_MCS2: index of MCS2
86  * @IWL_TLC_MNG_HT_RATE_MCS3: index of MCS3
87  * @IWL_TLC_MNG_HT_RATE_MCS4: index of MCS4
88  * @IWL_TLC_MNG_HT_RATE_MCS5: index of MCS5
89  * @IWL_TLC_MNG_HT_RATE_MCS6: index of MCS6
90  * @IWL_TLC_MNG_HT_RATE_MCS7: index of MCS7
91  * @IWL_TLC_MNG_HT_RATE_MCS8: index of MCS8
92  * @IWL_TLC_MNG_HT_RATE_MCS9: index of MCS9
93  * @IWL_TLC_MNG_HT_RATE_MCS10: index of MCS10
94  * @IWL_TLC_MNG_HT_RATE_MCS11: index of MCS11
95  * @IWL_TLC_MNG_HT_RATE_MAX: maximal rate for HT/VHT
96  */
97 enum iwl_tlc_mng_ht_rates {
98 	IWL_TLC_MNG_HT_RATE_MCS0 = 0,
99 	IWL_TLC_MNG_HT_RATE_MCS1,
100 	IWL_TLC_MNG_HT_RATE_MCS2,
101 	IWL_TLC_MNG_HT_RATE_MCS3,
102 	IWL_TLC_MNG_HT_RATE_MCS4,
103 	IWL_TLC_MNG_HT_RATE_MCS5,
104 	IWL_TLC_MNG_HT_RATE_MCS6,
105 	IWL_TLC_MNG_HT_RATE_MCS7,
106 	IWL_TLC_MNG_HT_RATE_MCS8,
107 	IWL_TLC_MNG_HT_RATE_MCS9,
108 	IWL_TLC_MNG_HT_RATE_MCS10,
109 	IWL_TLC_MNG_HT_RATE_MCS11,
110 	IWL_TLC_MNG_HT_RATE_MAX = IWL_TLC_MNG_HT_RATE_MCS11,
111 };
112 
113 enum IWL_TLC_MNG_NSS {
114 	IWL_TLC_NSS_1,
115 	IWL_TLC_NSS_2,
116 	IWL_TLC_NSS_MAX
117 };
118 
119 /**
120  * enum IWL_TLC_MCS_PER_BW - mcs index per BW
121  * @IWL_TLC_MCS_PER_BW_80: mcs for bw - 20Hhz, 40Hhz, 80Hhz
122  * @IWL_TLC_MCS_PER_BW_160: mcs for bw - 160Mhz
123  * @IWL_TLC_MCS_PER_BW_320: mcs for bw - 320Mhz
124  * @IWL_TLC_MCS_PER_BW_NUM_V3: number of entries up to version 3
125  * @IWL_TLC_MCS_PER_BW_NUM_V4: number of entries from version 4
126  */
127 enum IWL_TLC_MCS_PER_BW {
128 	IWL_TLC_MCS_PER_BW_80,
129 	IWL_TLC_MCS_PER_BW_160,
130 	IWL_TLC_MCS_PER_BW_320,
131 	IWL_TLC_MCS_PER_BW_NUM_V3 = IWL_TLC_MCS_PER_BW_160 + 1,
132 	IWL_TLC_MCS_PER_BW_NUM_V4 = IWL_TLC_MCS_PER_BW_320 + 1,
133 };
134 
135 /**
136  * struct tlc_config_cmd - TLC configuration
137  * @sta_id: station id
138  * @reserved1: reserved
139  * @max_ch_width: max supported channel width from @enum iwl_tlc_mng_cfg_cw
140  * @mode: &enum iwl_tlc_mng_cfg_mode
141  * @chains: bitmask of &enum iwl_tlc_mng_cfg_chains
142  * @amsdu: TX amsdu is supported
143  * @flags: bitmask of &enum iwl_tlc_mng_cfg_flags
144  * @non_ht_rates: bitmap of supported legacy rates
145  * @ht_rates: bitmap of &enum iwl_tlc_mng_ht_rates, per &enum IWL_TLC_MCS_PER_BW
146  *	      <nss, channel-width> pair (0 - 80mhz width and below, 1 - 160mhz).
147  * @max_mpdu_len: max MPDU length, in bytes
148  * @sgi_ch_width_supp: bitmap of SGI support per channel width
149  *		       use BIT(@enum iwl_tlc_mng_cfg_cw)
150  * @reserved2: reserved
151  * @max_tx_op: max TXOP in uSecs for all AC (BK, BE, VO, VI),
152  *	       set zero for no limit.
153  */
154 struct iwl_tlc_config_cmd_v3 {
155 	u8 sta_id;
156 	u8 reserved1[3];
157 	u8 max_ch_width;
158 	u8 mode;
159 	u8 chains;
160 	u8 amsdu;
161 	__le16 flags;
162 	__le16 non_ht_rates;
163 	__le16 ht_rates[IWL_TLC_NSS_MAX][IWL_TLC_MCS_PER_BW_NUM_V3];
164 	__le16 max_mpdu_len;
165 	u8 sgi_ch_width_supp;
166 	u8 reserved2;
167 	__le32 max_tx_op;
168 } __packed; /* TLC_MNG_CONFIG_CMD_API_S_VER_3 */
169 
170 /**
171  * struct tlc_config_cmd - TLC configuration
172  * @sta_id: station id
173  * @reserved1: reserved
174  * @max_ch_width: max supported channel width from &enum iwl_tlc_mng_cfg_cw
175  * @mode: &enum iwl_tlc_mng_cfg_mode
176  * @chains: bitmask of &enum iwl_tlc_mng_cfg_chains
177  * @sgi_ch_width_supp: bitmap of SGI support per channel width
178  *		       use BIT(&enum iwl_tlc_mng_cfg_cw)
179  * @flags: bitmask of &enum iwl_tlc_mng_cfg_flags
180  * @non_ht_rates: bitmap of supported legacy rates
181  * @ht_rates: bitmap of &enum iwl_tlc_mng_ht_rates, per <nss, channel-width>
182  *	      pair (0 - 80mhz width and below, 1 - 160mhz, 2 - 320mhz).
183  * @max_mpdu_len: max MPDU length, in bytes
184  * @max_tx_op: max TXOP in uSecs for all AC (BK, BE, VO, VI),
185  *	       set zero for no limit.
186  */
187 struct iwl_tlc_config_cmd_v4 {
188 	u8 sta_id;
189 	u8 reserved1[3];
190 	u8 max_ch_width;
191 	u8 mode;
192 	u8 chains;
193 	u8 sgi_ch_width_supp;
194 	__le16 flags;
195 	__le16 non_ht_rates;
196 	__le16 ht_rates[IWL_TLC_NSS_MAX][IWL_TLC_MCS_PER_BW_NUM_V4];
197 	__le16 max_mpdu_len;
198 	__le16 max_tx_op;
199 } __packed; /* TLC_MNG_CONFIG_CMD_API_S_VER_4 */
200 
201 /**
202  * enum iwl_tlc_update_flags - updated fields
203  * @IWL_TLC_NOTIF_FLAG_RATE: last initial rate update
204  * @IWL_TLC_NOTIF_FLAG_AMSDU: umsdu parameters update
205  */
206 enum iwl_tlc_update_flags {
207 	IWL_TLC_NOTIF_FLAG_RATE  = BIT(0),
208 	IWL_TLC_NOTIF_FLAG_AMSDU = BIT(1),
209 };
210 
211 /**
212  * struct iwl_tlc_update_notif - TLC notification from FW
213  * @sta_id: station id
214  * @reserved: reserved
215  * @flags: bitmap of notifications reported
216  * @rate: current initial rate
217  * @amsdu_size: Max AMSDU size, in bytes
218  * @amsdu_enabled: bitmap for per-TID AMSDU enablement
219  */
220 struct iwl_tlc_update_notif {
221 	u8 sta_id;
222 	u8 reserved[3];
223 	__le32 flags;
224 	__le32 rate;
225 	__le32 amsdu_size;
226 	__le32 amsdu_enabled;
227 } __packed; /* TLC_MNG_UPDATE_NTFY_API_S_VER_2 */
228 
229 
230 #define IWL_MAX_MCS_DISPLAY_SIZE        12
231 
232 struct iwl_rate_mcs_info {
233 	char    mbps[IWL_MAX_MCS_DISPLAY_SIZE];
234 	char    mcs[IWL_MAX_MCS_DISPLAY_SIZE];
235 };
236 
237 /*
238  * These serve as indexes into
239  * struct iwl_rate_info fw_rate_idx_to_plcp[IWL_RATE_COUNT];
240  * TODO: avoid overlap between legacy and HT rates
241  */
242 enum {
243 	IWL_RATE_1M_INDEX = 0,
244 	IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
245 	IWL_RATE_2M_INDEX,
246 	IWL_RATE_5M_INDEX,
247 	IWL_RATE_11M_INDEX,
248 	IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
249 	IWL_RATE_6M_INDEX,
250 	IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
251 	IWL_RATE_MCS_0_INDEX = IWL_RATE_6M_INDEX,
252 	IWL_FIRST_HT_RATE = IWL_RATE_MCS_0_INDEX,
253 	IWL_FIRST_VHT_RATE = IWL_RATE_MCS_0_INDEX,
254 	IWL_RATE_9M_INDEX,
255 	IWL_RATE_12M_INDEX,
256 	IWL_RATE_MCS_1_INDEX = IWL_RATE_12M_INDEX,
257 	IWL_RATE_18M_INDEX,
258 	IWL_RATE_MCS_2_INDEX = IWL_RATE_18M_INDEX,
259 	IWL_RATE_24M_INDEX,
260 	IWL_RATE_MCS_3_INDEX = IWL_RATE_24M_INDEX,
261 	IWL_RATE_36M_INDEX,
262 	IWL_RATE_MCS_4_INDEX = IWL_RATE_36M_INDEX,
263 	IWL_RATE_48M_INDEX,
264 	IWL_RATE_MCS_5_INDEX = IWL_RATE_48M_INDEX,
265 	IWL_RATE_54M_INDEX,
266 	IWL_RATE_MCS_6_INDEX = IWL_RATE_54M_INDEX,
267 	IWL_LAST_NON_HT_RATE = IWL_RATE_54M_INDEX,
268 	IWL_RATE_60M_INDEX,
269 	IWL_RATE_MCS_7_INDEX = IWL_RATE_60M_INDEX,
270 	IWL_LAST_HT_RATE = IWL_RATE_MCS_7_INDEX,
271 	IWL_RATE_MCS_8_INDEX,
272 	IWL_RATE_MCS_9_INDEX,
273 	IWL_LAST_VHT_RATE = IWL_RATE_MCS_9_INDEX,
274 	IWL_RATE_MCS_10_INDEX,
275 	IWL_RATE_MCS_11_INDEX,
276 	IWL_LAST_HE_RATE = IWL_RATE_MCS_11_INDEX,
277 	IWL_RATE_COUNT_LEGACY = IWL_LAST_NON_HT_RATE + 1,
278 	IWL_RATE_COUNT = IWL_LAST_HE_RATE + 1,
279 	IWL_RATE_INVM_INDEX = IWL_RATE_COUNT,
280 	IWL_RATE_INVALID = IWL_RATE_COUNT,
281 };
282 
283 #define IWL_RATE_BIT_MSK(r) BIT(IWL_RATE_##r##M_INDEX)
284 
285 /* fw API values for legacy bit rates, both OFDM and CCK */
286 enum {
287 	IWL_RATE_6M_PLCP  = 13,
288 	IWL_RATE_9M_PLCP  = 15,
289 	IWL_RATE_12M_PLCP = 5,
290 	IWL_RATE_18M_PLCP = 7,
291 	IWL_RATE_24M_PLCP = 9,
292 	IWL_RATE_36M_PLCP = 11,
293 	IWL_RATE_48M_PLCP = 1,
294 	IWL_RATE_54M_PLCP = 3,
295 	IWL_RATE_1M_PLCP  = 10,
296 	IWL_RATE_2M_PLCP  = 20,
297 	IWL_RATE_5M_PLCP  = 55,
298 	IWL_RATE_11M_PLCP = 110,
299 	IWL_RATE_INVM_PLCP = -1,
300 };
301 
302 /*
303  * rate_n_flags bit fields version 1
304  *
305  * The 32-bit value has different layouts in the low 8 bites depending on the
306  * format. There are three formats, HT, VHT and legacy (11abg, with subformats
307  * for CCK and OFDM).
308  *
309  * High-throughput (HT) rate format
310  *	bit 8 is 1, bit 26 is 0, bit 9 is 0 (OFDM)
311  * Very High-throughput (VHT) rate format
312  *	bit 8 is 0, bit 26 is 1, bit 9 is 0 (OFDM)
313  * Legacy OFDM rate format for bits 7:0
314  *	bit 8 is 0, bit 26 is 0, bit 9 is 0 (OFDM)
315  * Legacy CCK rate format for bits 7:0:
316  *	bit 8 is 0, bit 26 is 0, bit 9 is 1 (CCK)
317  */
318 
319 /* Bit 8: (1) HT format, (0) legacy or VHT format */
320 #define RATE_MCS_HT_POS 8
321 #define RATE_MCS_HT_MSK_V1 BIT(RATE_MCS_HT_POS)
322 
323 /* Bit 9: (1) CCK, (0) OFDM.  HT (bit 8) must be "0" for this bit to be valid */
324 #define RATE_MCS_CCK_POS_V1 9
325 #define RATE_MCS_CCK_MSK_V1 BIT(RATE_MCS_CCK_POS_V1)
326 
327 /* Bit 26: (1) VHT format, (0) legacy format in bits 8:0 */
328 #define RATE_MCS_VHT_POS_V1 26
329 #define RATE_MCS_VHT_MSK_V1 BIT(RATE_MCS_VHT_POS_V1)
330 
331 
332 /*
333  * High-throughput (HT) rate format for bits 7:0
334  *
335  *  2-0:  MCS rate base
336  *        0)   6 Mbps
337  *        1)  12 Mbps
338  *        2)  18 Mbps
339  *        3)  24 Mbps
340  *        4)  36 Mbps
341  *        5)  48 Mbps
342  *        6)  54 Mbps
343  *        7)  60 Mbps
344  *  4-3:  0)  Single stream (SISO)
345  *        1)  Dual stream (MIMO)
346  *        2)  Triple stream (MIMO)
347  *    5:  Value of 0x20 in bits 7:0 indicates 6 Mbps HT40 duplicate data
348  *  (bits 7-6 are zero)
349  *
350  * Together the low 5 bits work out to the MCS index because we don't
351  * support MCSes above 15/23, and 0-7 have one stream, 8-15 have two
352  * streams and 16-23 have three streams. We could also support MCS 32
353  * which is the duplicate 20 MHz MCS (bit 5 set, all others zero.)
354  */
355 #define RATE_HT_MCS_RATE_CODE_MSK_V1	0x7
356 #define RATE_HT_MCS_NSS_POS_V1          3
357 #define RATE_HT_MCS_NSS_MSK_V1          (3 << RATE_HT_MCS_NSS_POS_V1)
358 #define RATE_HT_MCS_MIMO2_MSK		BIT(RATE_HT_MCS_NSS_POS_V1)
359 
360 /* Bit 10: (1) Use Green Field preamble */
361 #define RATE_HT_MCS_GF_POS		10
362 #define RATE_HT_MCS_GF_MSK		(1 << RATE_HT_MCS_GF_POS)
363 
364 #define RATE_HT_MCS_INDEX_MSK_V1	0x3f
365 
366 /*
367  * Very High-throughput (VHT) rate format for bits 7:0
368  *
369  *  3-0:  VHT MCS (0-9)
370  *  5-4:  number of streams - 1:
371  *        0)  Single stream (SISO)
372  *        1)  Dual stream (MIMO)
373  *        2)  Triple stream (MIMO)
374  */
375 
376 /* Bit 4-5: (0) SISO, (1) MIMO2 (2) MIMO3 */
377 #define RATE_VHT_MCS_RATE_CODE_MSK	0xf
378 #define RATE_VHT_MCS_NSS_POS		4
379 #define RATE_VHT_MCS_NSS_MSK		(3 << RATE_VHT_MCS_NSS_POS)
380 #define RATE_VHT_MCS_MIMO2_MSK		BIT(RATE_VHT_MCS_NSS_POS)
381 
382 /*
383  * Legacy OFDM rate format for bits 7:0
384  *
385  *  3-0:  0xD)   6 Mbps
386  *        0xF)   9 Mbps
387  *        0x5)  12 Mbps
388  *        0x7)  18 Mbps
389  *        0x9)  24 Mbps
390  *        0xB)  36 Mbps
391  *        0x1)  48 Mbps
392  *        0x3)  54 Mbps
393  * (bits 7-4 are 0)
394  *
395  * Legacy CCK rate format for bits 7:0:
396  * bit 8 is 0, bit 26 is 0, bit 9 is 1 (CCK):
397  *
398  *  6-0:   10)  1 Mbps
399  *         20)  2 Mbps
400  *         55)  5.5 Mbps
401  *        110)  11 Mbps
402  * (bit 7 is 0)
403  */
404 #define RATE_LEGACY_RATE_MSK_V1 0xff
405 
406 /* Bit 10 - OFDM HE */
407 #define RATE_MCS_HE_POS_V1	10
408 #define RATE_MCS_HE_MSK_V1	BIT(RATE_MCS_HE_POS_V1)
409 
410 /*
411  * Bit 11-12: (0) 20MHz, (1) 40MHz, (2) 80MHz, (3) 160MHz
412  * 0 and 1 are valid for HT and VHT, 2 and 3 only for VHT
413  */
414 #define RATE_MCS_CHAN_WIDTH_POS		11
415 #define RATE_MCS_CHAN_WIDTH_MSK_V1	(3 << RATE_MCS_CHAN_WIDTH_POS)
416 
417 /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
418 #define RATE_MCS_SGI_POS_V1		13
419 #define RATE_MCS_SGI_MSK_V1		BIT(RATE_MCS_SGI_POS_V1)
420 
421 /* Bit 14-16: Antenna selection (1) Ant A, (2) Ant B, (4) Ant C */
422 #define RATE_MCS_ANT_POS		14
423 #define RATE_MCS_ANT_A_MSK		(1 << RATE_MCS_ANT_POS)
424 #define RATE_MCS_ANT_B_MSK		(2 << RATE_MCS_ANT_POS)
425 #define RATE_MCS_ANT_AB_MSK		(RATE_MCS_ANT_A_MSK | \
426 					 RATE_MCS_ANT_B_MSK)
427 #define RATE_MCS_ANT_MSK		RATE_MCS_ANT_AB_MSK
428 
429 /* Bit 17: (0) SS, (1) SS*2 */
430 #define RATE_MCS_STBC_POS		17
431 #define RATE_MCS_STBC_MSK		BIT(RATE_MCS_STBC_POS)
432 
433 /* Bit 18: OFDM-HE dual carrier mode */
434 #define RATE_HE_DUAL_CARRIER_MODE	18
435 #define RATE_HE_DUAL_CARRIER_MODE_MSK	BIT(RATE_HE_DUAL_CARRIER_MODE)
436 
437 /* Bit 19: (0) Beamforming is off, (1) Beamforming is on */
438 #define RATE_MCS_BF_POS			19
439 #define RATE_MCS_BF_MSK			(1 << RATE_MCS_BF_POS)
440 
441 /*
442  * Bit 20-21: HE LTF type and guard interval
443  * HE (ext) SU:
444  *	0			1xLTF+0.8us
445  *	1			2xLTF+0.8us
446  *	2			2xLTF+1.6us
447  *	3 & SGI (bit 13) clear	4xLTF+3.2us
448  *	3 & SGI (bit 13) set	4xLTF+0.8us
449  * HE MU:
450  *	0			4xLTF+0.8us
451  *	1			2xLTF+0.8us
452  *	2			2xLTF+1.6us
453  *	3			4xLTF+3.2us
454  * HE TRIG:
455  *	0			1xLTF+1.6us
456  *	1			2xLTF+1.6us
457  *	2			4xLTF+3.2us
458  *	3			(does not occur)
459  */
460 #define RATE_MCS_HE_GI_LTF_POS		20
461 #define RATE_MCS_HE_GI_LTF_MSK_V1		(3 << RATE_MCS_HE_GI_LTF_POS)
462 
463 /* Bit 22-23: HE type. (0) SU, (1) SU_EXT, (2) MU, (3) trigger based */
464 #define RATE_MCS_HE_TYPE_POS_V1		22
465 #define RATE_MCS_HE_TYPE_SU_V1		(0 << RATE_MCS_HE_TYPE_POS_V1)
466 #define RATE_MCS_HE_TYPE_EXT_SU_V1		BIT(RATE_MCS_HE_TYPE_POS_V1)
467 #define RATE_MCS_HE_TYPE_MU_V1		(2 << RATE_MCS_HE_TYPE_POS_V1)
468 #define RATE_MCS_HE_TYPE_TRIG_V1	(3 << RATE_MCS_HE_TYPE_POS_V1)
469 #define RATE_MCS_HE_TYPE_MSK_V1		(3 << RATE_MCS_HE_TYPE_POS_V1)
470 
471 /* Bit 24-25: (0) 20MHz (no dup), (1) 2x20MHz, (2) 4x20MHz, 3 8x20MHz */
472 #define RATE_MCS_DUP_POS_V1		24
473 #define RATE_MCS_DUP_MSK_V1		(3 << RATE_MCS_DUP_POS_V1)
474 
475 /* Bit 27: (1) LDPC enabled, (0) LDPC disabled */
476 #define RATE_MCS_LDPC_POS_V1		27
477 #define RATE_MCS_LDPC_MSK_V1		BIT(RATE_MCS_LDPC_POS_V1)
478 
479 /* Bit 28: (1) 106-tone RX (8 MHz RU), (0) normal bandwidth */
480 #define RATE_MCS_HE_106T_POS_V1		28
481 #define RATE_MCS_HE_106T_MSK_V1		BIT(RATE_MCS_HE_106T_POS_V1)
482 
483 /* Bit 30-31: (1) RTS, (2) CTS */
484 #define RATE_MCS_RTS_REQUIRED_POS  (30)
485 #define RATE_MCS_RTS_REQUIRED_MSK  (0x1 << RATE_MCS_RTS_REQUIRED_POS)
486 
487 #define RATE_MCS_CTS_REQUIRED_POS  (31)
488 #define RATE_MCS_CTS_REQUIRED_MSK  (0x1 << RATE_MCS_CTS_REQUIRED_POS)
489 
490 /* rate_n_flags bit field version 2
491  *
492  * The 32-bit value has different layouts in the low 8 bits depending on the
493  * format. There are three formats, HT, VHT and legacy (11abg, with subformats
494  * for CCK and OFDM).
495  *
496  */
497 
498 /* Bits 10-8: rate format
499  * (0) Legacy CCK (1) Legacy OFDM (2) High-throughput (HT)
500  * (3) Very High-throughput (VHT) (4) High-efficiency (HE)
501  * (5) Extremely High-throughput (EHT)
502  */
503 #define RATE_MCS_MOD_TYPE_POS		8
504 #define RATE_MCS_MOD_TYPE_MSK		(0x7 << RATE_MCS_MOD_TYPE_POS)
505 #define RATE_MCS_CCK_MSK		(0 << RATE_MCS_MOD_TYPE_POS)
506 #define RATE_MCS_LEGACY_OFDM_MSK	(1 << RATE_MCS_MOD_TYPE_POS)
507 #define RATE_MCS_HT_MSK			(2 << RATE_MCS_MOD_TYPE_POS)
508 #define RATE_MCS_VHT_MSK		(3 << RATE_MCS_MOD_TYPE_POS)
509 #define RATE_MCS_HE_MSK			(4 << RATE_MCS_MOD_TYPE_POS)
510 #define RATE_MCS_EHT_MSK		(5 << RATE_MCS_MOD_TYPE_POS)
511 
512 /*
513  * Legacy CCK rate format for bits 0:3:
514  *
515  * (0) 0xa - 1 Mbps
516  * (1) 0x14 - 2 Mbps
517  * (2) 0x37 - 5.5 Mbps
518  * (3) 0x6e - 11 nbps
519  *
520  * Legacy OFDM rate format for bis 3:0:
521  *
522  * (0) 6 Mbps
523  * (1) 9 Mbps
524  * (2) 12 Mbps
525  * (3) 18 Mbps
526  * (4) 24 Mbps
527  * (5) 36 Mbps
528  * (6) 48 Mbps
529  * (7) 54 Mbps
530  *
531  */
532 #define RATE_LEGACY_RATE_MSK		0x7
533 
534 /*
535  * HT, VHT, HE, EHT rate format for bits 3:0
536  * 3-0: MCS
537  *
538  */
539 #define RATE_HT_MCS_CODE_MSK		0x7
540 #define RATE_MCS_NSS_POS		4
541 #define RATE_MCS_NSS_MSK		(1 << RATE_MCS_NSS_POS)
542 #define RATE_MCS_CODE_MSK		0xf
543 #define RATE_HT_MCS_INDEX(r)		((((r) & RATE_MCS_NSS_MSK) >> 1) | \
544 					 ((r) & RATE_HT_MCS_CODE_MSK))
545 
546 /* Bits 7-5: reserved */
547 
548 /*
549  * Bits 13-11: (0) 20MHz, (1) 40MHz, (2) 80MHz, (3) 160MHz, (4) 320MHz
550  */
551 #define RATE_MCS_CHAN_WIDTH_MSK			(0x7 << RATE_MCS_CHAN_WIDTH_POS)
552 #define RATE_MCS_CHAN_WIDTH_20			(0 << RATE_MCS_CHAN_WIDTH_POS)
553 #define RATE_MCS_CHAN_WIDTH_40			(1 << RATE_MCS_CHAN_WIDTH_POS)
554 #define RATE_MCS_CHAN_WIDTH_80			(2 << RATE_MCS_CHAN_WIDTH_POS)
555 #define RATE_MCS_CHAN_WIDTH_160			(3 << RATE_MCS_CHAN_WIDTH_POS)
556 #define RATE_MCS_CHAN_WIDTH_320			(4 << RATE_MCS_CHAN_WIDTH_POS)
557 
558 /* Bit 15-14: Antenna selection:
559  * Bit 14: Ant A active
560  * Bit 15: Ant B active
561  *
562  * All relevant definitions are same as in v1
563  */
564 
565 /* Bit 16 (1) LDPC enables, (0) LDPC disabled */
566 #define RATE_MCS_LDPC_POS	16
567 #define RATE_MCS_LDPC_MSK	(1 << RATE_MCS_LDPC_POS)
568 
569 /* Bit 17: (0) SS, (1) SS*2 (same as v1) */
570 
571 /* Bit 18: OFDM-HE dual carrier mode (same as v1) */
572 
573 /* Bit 19: (0) Beamforming is off, (1) Beamforming is on (same as v1) */
574 
575 /*
576  * Bit 22-20: HE LTF type and guard interval
577  * CCK:
578  *	0			long preamble
579  *	1			short preamble
580  * HT/VHT:
581  *	0			0.8us
582  *	1			0.4us
583  * HE (ext) SU:
584  *	0			1xLTF+0.8us
585  *	1			2xLTF+0.8us
586  *	2			2xLTF+1.6us
587  *	3			4xLTF+3.2us
588  *	4			4xLTF+0.8us
589  * HE MU:
590  *	0			4xLTF+0.8us
591  *	1			2xLTF+0.8us
592  *	2			2xLTF+1.6us
593  *	3			4xLTF+3.2us
594  * HE TRIG:
595  *	0			1xLTF+1.6us
596  *	1			2xLTF+1.6us
597  *	2			4xLTF+3.2us
598  * */
599 #define RATE_MCS_HE_GI_LTF_MSK		(0x7 << RATE_MCS_HE_GI_LTF_POS)
600 #define RATE_MCS_SGI_POS		RATE_MCS_HE_GI_LTF_POS
601 #define RATE_MCS_SGI_MSK		(1 << RATE_MCS_SGI_POS)
602 #define RATE_MCS_HE_SU_4_LTF		3
603 #define RATE_MCS_HE_SU_4_LTF_08_GI	4
604 
605 /* Bit 24-23: HE type. (0) SU, (1) SU_EXT, (2) MU, (3) trigger based */
606 #define RATE_MCS_HE_TYPE_POS		23
607 #define RATE_MCS_HE_TYPE_SU		(0 << RATE_MCS_HE_TYPE_POS)
608 #define RATE_MCS_HE_TYPE_EXT_SU		(1 << RATE_MCS_HE_TYPE_POS)
609 #define RATE_MCS_HE_TYPE_MU		(2 << RATE_MCS_HE_TYPE_POS)
610 #define RATE_MCS_HE_TYPE_TRIG		(3 << RATE_MCS_HE_TYPE_POS)
611 #define RATE_MCS_HE_TYPE_MSK		(3 << RATE_MCS_HE_TYPE_POS)
612 
613 /* Bit 25: duplicate channel enabled
614  *
615  * if this bit is set, duplicate is according to BW (bits 11-13):
616  *
617  * CCK:  2x 20MHz
618  * OFDM Legacy: N x 20Mhz, (N = BW \ 2 , either 2, 4, 8, 16)
619  * EHT: 2 x BW/2, (80 - 2x40, 160 - 2x80, 320 - 2x160)
620  * */
621 #define RATE_MCS_DUP_POS		25
622 #define RATE_MCS_DUP_MSK		(1 << RATE_MCS_DUP_POS)
623 
624 /* Bit 26: (1) 106-tone RX (8 MHz RU), (0) normal bandwidth */
625 #define RATE_MCS_HE_106T_POS		26
626 #define RATE_MCS_HE_106T_MSK		(1 << RATE_MCS_HE_106T_POS)
627 
628 /* Bit 27: EHT extra LTF:
629  * instead of 1 LTF for SISO use 2 LTFs,
630  * instead of 2 LTFs for NSTS=2 use 4 LTFs*/
631 #define RATE_MCS_EHT_EXTRA_LTF_POS	27
632 #define RATE_MCS_EHT_EXTRA_LTF_MSK	(1 << RATE_MCS_EHT_EXTRA_LTF_POS)
633 
634 /* Bit 31-28: reserved */
635 
636 /* Link Quality definitions */
637 
638 /* # entries in rate scale table to support Tx retries */
639 #define  LQ_MAX_RETRY_NUM 16
640 
641 /* Link quality command flags bit fields */
642 
643 /* Bit 0: (0) Don't use RTS (1) Use RTS */
644 #define LQ_FLAG_USE_RTS_POS             0
645 #define LQ_FLAG_USE_RTS_MSK	        (1 << LQ_FLAG_USE_RTS_POS)
646 
647 /* Bit 1-3: LQ command color. Used to match responses to LQ commands */
648 #define LQ_FLAG_COLOR_POS               1
649 #define LQ_FLAG_COLOR_MSK               (7 << LQ_FLAG_COLOR_POS)
650 #define LQ_FLAG_COLOR_GET(_f)		(((_f) & LQ_FLAG_COLOR_MSK) >>\
651 					 LQ_FLAG_COLOR_POS)
652 #define LQ_FLAGS_COLOR_INC(_c)		((((_c) + 1) << LQ_FLAG_COLOR_POS) &\
653 					 LQ_FLAG_COLOR_MSK)
654 #define LQ_FLAG_COLOR_SET(_f, _c)	((_c) | ((_f) & ~LQ_FLAG_COLOR_MSK))
655 
656 /* Bit 4-5: Tx RTS BW Signalling
657  * (0) No RTS BW signalling
658  * (1) Static BW signalling
659  * (2) Dynamic BW signalling
660  */
661 #define LQ_FLAG_RTS_BW_SIG_POS          4
662 #define LQ_FLAG_RTS_BW_SIG_NONE         (0 << LQ_FLAG_RTS_BW_SIG_POS)
663 #define LQ_FLAG_RTS_BW_SIG_STATIC       (1 << LQ_FLAG_RTS_BW_SIG_POS)
664 #define LQ_FLAG_RTS_BW_SIG_DYNAMIC      (2 << LQ_FLAG_RTS_BW_SIG_POS)
665 
666 /* Bit 6: (0) No dynamic BW selection (1) Allow dynamic BW selection
667  * Dyanmic BW selection allows Tx with narrower BW then requested in rates
668  */
669 #define LQ_FLAG_DYNAMIC_BW_POS          6
670 #define LQ_FLAG_DYNAMIC_BW_MSK          (1 << LQ_FLAG_DYNAMIC_BW_POS)
671 
672 /* Single Stream Tx Parameters (lq_cmd->ss_params)
673  * Flags to control a smart FW decision about whether BFER/STBC/SISO will be
674  * used for single stream Tx.
675  */
676 
677 /* Bit 0-1: Max STBC streams allowed. Can be 0-3.
678  * (0) - No STBC allowed
679  * (1) - 2x1 STBC allowed (HT/VHT)
680  * (2) - 4x2 STBC allowed (HT/VHT)
681  * (3) - 3x2 STBC allowed (HT only)
682  * All our chips are at most 2 antennas so only (1) is valid for now.
683  */
684 #define LQ_SS_STBC_ALLOWED_POS          0
685 #define LQ_SS_STBC_ALLOWED_MSK		(3 << LQ_SS_STBC_ALLOWED_MSK)
686 
687 /* 2x1 STBC is allowed */
688 #define LQ_SS_STBC_1SS_ALLOWED		(1 << LQ_SS_STBC_ALLOWED_POS)
689 
690 /* Bit 2: Beamformer (VHT only) is allowed */
691 #define LQ_SS_BFER_ALLOWED_POS		2
692 #define LQ_SS_BFER_ALLOWED		(1 << LQ_SS_BFER_ALLOWED_POS)
693 
694 /* Bit 3: Force BFER or STBC for testing
695  * If this is set:
696  * If BFER is allowed then force the ucode to choose BFER else
697  * If STBC is allowed then force the ucode to choose STBC over SISO
698  */
699 #define LQ_SS_FORCE_POS			3
700 #define LQ_SS_FORCE			(1 << LQ_SS_FORCE_POS)
701 
702 /* Bit 31: ss_params field is valid. Used for FW backward compatibility
703  * with other drivers which don't support the ss_params API yet
704  */
705 #define LQ_SS_PARAMS_VALID_POS		31
706 #define LQ_SS_PARAMS_VALID		(1 << LQ_SS_PARAMS_VALID_POS)
707 
708 /**
709  * struct iwl_lq_cmd - link quality command
710  * @sta_id: station to update
711  * @reduced_tpc: reduced transmit power control value
712  * @control: not used
713  * @flags: combination of LQ_FLAG_*
714  * @mimo_delim: the first SISO index in rs_table, which separates MIMO
715  *	and SISO rates
716  * @single_stream_ant_msk: best antenna for SISO (can be dual in CDD).
717  *	Should be ANT_[ABC]
718  * @dual_stream_ant_msk: best antennas for MIMO, combination of ANT_[ABC]
719  * @initial_rate_index: first index from rs_table per AC category
720  * @agg_time_limit: aggregation max time threshold in usec/100, meaning
721  *	value of 100 is one usec. Range is 100 to 8000
722  * @agg_disable_start_th: try-count threshold for starting aggregation.
723  *	If a frame has higher try-count, it should not be selected for
724  *	starting an aggregation sequence.
725  * @agg_frame_cnt_limit: max frame count in an aggregation.
726  *	0: no limit
727  *	1: no aggregation (one frame per aggregation)
728  *	2 - 0x3f: maximal number of frames (up to 3f == 63)
729  * @reserved2: reserved
730  * @rs_table: array of rates for each TX try, each is rate_n_flags,
731  *	meaning it is a combination of RATE_MCS_* and IWL_RATE_*_PLCP
732  * @ss_params: single stream features. declare whether STBC or BFER are allowed.
733  */
734 struct iwl_lq_cmd {
735 	u8 sta_id;
736 	u8 reduced_tpc;
737 	__le16 control;
738 	/* LINK_QUAL_GENERAL_PARAMS_API_S_VER_1 */
739 	u8 flags;
740 	u8 mimo_delim;
741 	u8 single_stream_ant_msk;
742 	u8 dual_stream_ant_msk;
743 	u8 initial_rate_index[AC_NUM];
744 	/* LINK_QUAL_AGG_PARAMS_API_S_VER_1 */
745 	__le16 agg_time_limit;
746 	u8 agg_disable_start_th;
747 	u8 agg_frame_cnt_limit;
748 	__le32 reserved2;
749 	__le32 rs_table[LQ_MAX_RETRY_NUM];
750 	__le32 ss_params;
751 }; /* LINK_QUALITY_CMD_API_S_VER_1 */
752 
753 u8 iwl_fw_rate_idx_to_plcp(int idx);
754 u32 iwl_new_rate_from_v1(u32 rate_v1);
755 u32 iwl_legacy_rate_to_fw_idx(u32 rate_n_flags);
756 const struct iwl_rate_mcs_info *iwl_rate_mcs(int idx);
757 const char *iwl_rs_pretty_ant(u8 ant);
758 const char *iwl_rs_pretty_bw(int bw);
759 int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate);
760 bool iwl_he_is_sgi(u32 rate_n_flags);
761 
762 #endif /* __iwl_fw_api_rs_h__ */
763