18e84c258SEugene Krasnikov /*
28e84c258SEugene Krasnikov * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
38e84c258SEugene Krasnikov *
48e84c258SEugene Krasnikov * Permission to use, copy, modify, and/or distribute this software for any
58e84c258SEugene Krasnikov * purpose with or without fee is hereby granted, provided that the above
68e84c258SEugene Krasnikov * copyright notice and this permission notice appear in all copies.
78e84c258SEugene Krasnikov *
88e84c258SEugene Krasnikov * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
98e84c258SEugene Krasnikov * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
108e84c258SEugene Krasnikov * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
118e84c258SEugene Krasnikov * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
128e84c258SEugene Krasnikov * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
138e84c258SEugene Krasnikov * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
148e84c258SEugene Krasnikov * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
158e84c258SEugene Krasnikov */
168e84c258SEugene Krasnikov
178e84c258SEugene Krasnikov #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
188e84c258SEugene Krasnikov
19e1a6b5d3SBryan O'Donoghue #include <linux/random.h>
208e84c258SEugene Krasnikov #include "txrx.h"
218e84c258SEugene Krasnikov
get_rssi0(struct wcn36xx_rx_bd * bd)228e84c258SEugene Krasnikov static inline int get_rssi0(struct wcn36xx_rx_bd *bd)
238e84c258SEugene Krasnikov {
248e84c258SEugene Krasnikov return 100 - ((bd->phy_stat0 >> 24) & 0xff);
258e84c258SEugene Krasnikov }
268e84c258SEugene Krasnikov
get_snr(struct wcn36xx_rx_bd * bd)27039d5d4dSBryan O'Donoghue static inline int get_snr(struct wcn36xx_rx_bd *bd)
28039d5d4dSBryan O'Donoghue {
29039d5d4dSBryan O'Donoghue return ((bd->phy_stat1 >> 24) & 0xff);
30039d5d4dSBryan O'Donoghue }
31039d5d4dSBryan O'Donoghue
320aa90483SLoic Poulain struct wcn36xx_rate {
330aa90483SLoic Poulain u16 bitrate;
340aa90483SLoic Poulain u16 mcs_or_legacy_index;
350aa90483SLoic Poulain enum mac80211_rx_encoding encoding;
360aa90483SLoic Poulain enum mac80211_rx_encoding_flags encoding_flags;
370aa90483SLoic Poulain enum rate_info_bw bw;
380aa90483SLoic Poulain };
390aa90483SLoic Poulain
408a27ca39SLoic Poulain /* Buffer descriptor rx_ch field is limited to 5-bit (4+1), a mapping is used
418a27ca39SLoic Poulain * for 11A Channels.
428a27ca39SLoic Poulain */
438a27ca39SLoic Poulain static const u8 ab_rx_ch_map[] = { 36, 40, 44, 48, 52, 56, 60, 64, 100, 104,
448a27ca39SLoic Poulain 108, 112, 116, 120, 124, 128, 132, 136, 140,
458a27ca39SLoic Poulain 149, 153, 157, 161, 165, 144 };
468a27ca39SLoic Poulain
470aa90483SLoic Poulain static const struct wcn36xx_rate wcn36xx_rate_table[] = {
480aa90483SLoic Poulain /* 11b rates */
490aa90483SLoic Poulain { 10, 0, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
500aa90483SLoic Poulain { 20, 1, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
510aa90483SLoic Poulain { 55, 2, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
520aa90483SLoic Poulain { 110, 3, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
530aa90483SLoic Poulain
540aa90483SLoic Poulain /* 11b SP (short preamble) */
550aa90483SLoic Poulain { 10, 0, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
560aa90483SLoic Poulain { 20, 1, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
570aa90483SLoic Poulain { 55, 2, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
580aa90483SLoic Poulain { 110, 3, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
590aa90483SLoic Poulain
600aa90483SLoic Poulain /* 11ag */
610aa90483SLoic Poulain { 60, 4, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
620aa90483SLoic Poulain { 90, 5, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
630aa90483SLoic Poulain { 120, 6, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
640aa90483SLoic Poulain { 180, 7, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
650aa90483SLoic Poulain { 240, 8, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
660aa90483SLoic Poulain { 360, 9, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
670aa90483SLoic Poulain { 480, 10, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
680aa90483SLoic Poulain { 540, 11, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
690aa90483SLoic Poulain
700aa90483SLoic Poulain /* 11n */
710aa90483SLoic Poulain { 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 },
720aa90483SLoic Poulain { 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 },
730aa90483SLoic Poulain { 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 },
740aa90483SLoic Poulain { 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 },
750aa90483SLoic Poulain { 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 },
760aa90483SLoic Poulain { 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 },
770aa90483SLoic Poulain { 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 },
780aa90483SLoic Poulain { 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 },
790aa90483SLoic Poulain
800aa90483SLoic Poulain /* 11n SGI */
810aa90483SLoic Poulain { 72, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
820aa90483SLoic Poulain { 144, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
830aa90483SLoic Poulain { 217, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
840aa90483SLoic Poulain { 289, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
850aa90483SLoic Poulain { 434, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
860aa90483SLoic Poulain { 578, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
870aa90483SLoic Poulain { 650, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
880aa90483SLoic Poulain { 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
890aa90483SLoic Poulain
900aa90483SLoic Poulain /* 11n GF (greenfield) */
910aa90483SLoic Poulain { 65, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
920aa90483SLoic Poulain { 130, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
930aa90483SLoic Poulain { 195, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
940aa90483SLoic Poulain { 260, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
950aa90483SLoic Poulain { 390, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
960aa90483SLoic Poulain { 520, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
970aa90483SLoic Poulain { 585, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
980aa90483SLoic Poulain { 650, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
990aa90483SLoic Poulain
1000aa90483SLoic Poulain /* 11n CB (channel bonding) */
1010aa90483SLoic Poulain { 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1020aa90483SLoic Poulain { 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1030aa90483SLoic Poulain { 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1040aa90483SLoic Poulain { 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1050aa90483SLoic Poulain { 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1060aa90483SLoic Poulain { 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1070aa90483SLoic Poulain { 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1080aa90483SLoic Poulain { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
1090aa90483SLoic Poulain
1100aa90483SLoic Poulain /* 11n CB + SGI */
1110aa90483SLoic Poulain { 150, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1120aa90483SLoic Poulain { 300, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1130aa90483SLoic Poulain { 450, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1140aa90483SLoic Poulain { 600, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1150aa90483SLoic Poulain { 900, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1160aa90483SLoic Poulain { 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1170aa90483SLoic Poulain { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1180aa90483SLoic Poulain { 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
1190aa90483SLoic Poulain
1200aa90483SLoic Poulain /* 11n GF + CB */
1210aa90483SLoic Poulain { 135, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1220aa90483SLoic Poulain { 270, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1230aa90483SLoic Poulain { 405, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1240aa90483SLoic Poulain { 540, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1250aa90483SLoic Poulain { 810, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1260aa90483SLoic Poulain { 1080, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1270aa90483SLoic Poulain { 1215, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1280aa90483SLoic Poulain { 1350, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
1290aa90483SLoic Poulain
13010630b15SBryan O'Donoghue /* 11ac reserved indices */
13110630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
13210630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
13310630b15SBryan O'Donoghue
13410630b15SBryan O'Donoghue /* 11ac 20 MHz 800ns GI MCS 0-8 */
13510630b15SBryan O'Donoghue { 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 },
13610630b15SBryan O'Donoghue { 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 },
13710630b15SBryan O'Donoghue { 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 },
13810630b15SBryan O'Donoghue { 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 },
13910630b15SBryan O'Donoghue { 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 },
14010630b15SBryan O'Donoghue { 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 },
14110630b15SBryan O'Donoghue { 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 },
14210630b15SBryan O'Donoghue { 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 },
14310630b15SBryan O'Donoghue { 780, 8, RX_ENC_HT, 0, RATE_INFO_BW_20 },
14410630b15SBryan O'Donoghue
14510630b15SBryan O'Donoghue /* 11ac reserved indices */
14610630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
14710630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
14810630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
14910630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15010630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15110630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15210630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15410630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
15510630b15SBryan O'Donoghue
15610630b15SBryan O'Donoghue /* 11ac 20 MHz 400ns SGI MCS 6-8 */
15710630b15SBryan O'Donoghue { 655, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
15810630b15SBryan O'Donoghue { 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
15910630b15SBryan O'Donoghue { 866, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
16010630b15SBryan O'Donoghue
16110630b15SBryan O'Donoghue /* 11ac reserved indices */
16210630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
16310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
16410630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
16510630b15SBryan O'Donoghue
16610630b15SBryan O'Donoghue /* 11ac 40 MHz 800ns GI MCS 0-9 */
16710630b15SBryan O'Donoghue { 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 },
16810630b15SBryan O'Donoghue { 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 },
16910630b15SBryan O'Donoghue { 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17010630b15SBryan O'Donoghue { 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17110630b15SBryan O'Donoghue { 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17210630b15SBryan O'Donoghue { 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17310630b15SBryan O'Donoghue { 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17410630b15SBryan O'Donoghue { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17510630b15SBryan O'Donoghue { 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17610630b15SBryan O'Donoghue { 1620, 8, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17710630b15SBryan O'Donoghue { 1800, 9, RX_ENC_HT, 0, RATE_INFO_BW_40 },
17810630b15SBryan O'Donoghue
17910630b15SBryan O'Donoghue /* 11ac reserved indices */
18010630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18110630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18210630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18410630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18510630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18610630b15SBryan O'Donoghue
18710630b15SBryan O'Donoghue /* 11ac 40 MHz 400ns SGI MCS 5-7 */
18810630b15SBryan O'Donoghue { 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
18910630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
19010630b15SBryan O'Donoghue { 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
19110630b15SBryan O'Donoghue
19210630b15SBryan O'Donoghue /* 11ac reserved index */
19310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
19410630b15SBryan O'Donoghue
19510630b15SBryan O'Donoghue /* 11ac 40 MHz 400ns SGI MCS 5-7 */
19610630b15SBryan O'Donoghue { 1800, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
19710630b15SBryan O'Donoghue { 2000, 9, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
19810630b15SBryan O'Donoghue
19910630b15SBryan O'Donoghue /* 11ac reserved index */
20010630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
20110630b15SBryan O'Donoghue
20210630b15SBryan O'Donoghue /* 11ac 80 MHz 800ns GI MCS 0-7 */
20310630b15SBryan O'Donoghue { 292, 0, RX_ENC_HT, 0, RATE_INFO_BW_80},
20410630b15SBryan O'Donoghue { 585, 1, RX_ENC_HT, 0, RATE_INFO_BW_80},
20510630b15SBryan O'Donoghue { 877, 2, RX_ENC_HT, 0, RATE_INFO_BW_80},
20610630b15SBryan O'Donoghue { 1170, 3, RX_ENC_HT, 0, RATE_INFO_BW_80},
20710630b15SBryan O'Donoghue { 1755, 4, RX_ENC_HT, 0, RATE_INFO_BW_80},
20810630b15SBryan O'Donoghue { 2340, 5, RX_ENC_HT, 0, RATE_INFO_BW_80},
20910630b15SBryan O'Donoghue { 2632, 6, RX_ENC_HT, 0, RATE_INFO_BW_80},
21010630b15SBryan O'Donoghue { 2925, 7, RX_ENC_HT, 0, RATE_INFO_BW_80},
21110630b15SBryan O'Donoghue
21210630b15SBryan O'Donoghue /* 11 ac reserved index */
21310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
21410630b15SBryan O'Donoghue
21510630b15SBryan O'Donoghue /* 11ac 80 MHz 800 ns GI MCS 8-9 */
21610630b15SBryan O'Donoghue { 3510, 8, RX_ENC_HT, 0, RATE_INFO_BW_80},
21710630b15SBryan O'Donoghue { 3900, 9, RX_ENC_HT, 0, RATE_INFO_BW_80},
21810630b15SBryan O'Donoghue
21910630b15SBryan O'Donoghue /* 11 ac reserved indices */
22010630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22110630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22210630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22410630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22510630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22610630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
22710630b15SBryan O'Donoghue
22810630b15SBryan O'Donoghue /* 11ac 80 MHz 400 ns SGI MCS 6-7 */
22910630b15SBryan O'Donoghue { 2925, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
23010630b15SBryan O'Donoghue { 3250, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
23110630b15SBryan O'Donoghue
23210630b15SBryan O'Donoghue /* 11ac reserved index */
23310630b15SBryan O'Donoghue { 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
23410630b15SBryan O'Donoghue
23510630b15SBryan O'Donoghue /* 11ac 80 MHz 400ns SGI MCS 8-9 */
23610630b15SBryan O'Donoghue { 3900, 8, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
23710630b15SBryan O'Donoghue { 4333, 9, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
2380aa90483SLoic Poulain };
2390aa90483SLoic Poulain
wcn36xx_unchain_msdu(struct sk_buff_head * amsdu)240a224b47aSLoic Poulain static struct sk_buff *wcn36xx_unchain_msdu(struct sk_buff_head *amsdu)
241a224b47aSLoic Poulain {
242a224b47aSLoic Poulain struct sk_buff *skb, *first;
243a224b47aSLoic Poulain int total_len = 0;
244a224b47aSLoic Poulain int space;
245a224b47aSLoic Poulain
246a224b47aSLoic Poulain first = __skb_dequeue(amsdu);
247a224b47aSLoic Poulain
248a224b47aSLoic Poulain skb_queue_walk(amsdu, skb)
249a224b47aSLoic Poulain total_len += skb->len;
250a224b47aSLoic Poulain
251a224b47aSLoic Poulain space = total_len - skb_tailroom(first);
252a224b47aSLoic Poulain if (space > 0 && pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0) {
253a224b47aSLoic Poulain __skb_queue_head(amsdu, first);
254a224b47aSLoic Poulain return NULL;
255a224b47aSLoic Poulain }
256a224b47aSLoic Poulain
257a224b47aSLoic Poulain /* Walk list again, copying contents into msdu_head */
258a224b47aSLoic Poulain while ((skb = __skb_dequeue(amsdu))) {
259a224b47aSLoic Poulain skb_copy_from_linear_data(skb, skb_put(first, skb->len),
260a224b47aSLoic Poulain skb->len);
261a224b47aSLoic Poulain dev_kfree_skb_irq(skb);
262a224b47aSLoic Poulain }
263a224b47aSLoic Poulain
264a224b47aSLoic Poulain return first;
265a224b47aSLoic Poulain }
266a224b47aSLoic Poulain
__skb_queue_purge_irq(struct sk_buff_head * list)267a224b47aSLoic Poulain static void __skb_queue_purge_irq(struct sk_buff_head *list)
268a224b47aSLoic Poulain {
269a224b47aSLoic Poulain struct sk_buff *skb;
270a224b47aSLoic Poulain
271a224b47aSLoic Poulain while ((skb = __skb_dequeue(list)) != NULL)
272a224b47aSLoic Poulain dev_kfree_skb_irq(skb);
273a224b47aSLoic Poulain }
274a224b47aSLoic Poulain
wcn36xx_update_survey(struct wcn36xx * wcn,int rssi,int snr,int band,int freq)27529696e0aSBryan O'Donoghue static void wcn36xx_update_survey(struct wcn36xx *wcn, int rssi, int snr,
27629696e0aSBryan O'Donoghue int band, int freq)
27729696e0aSBryan O'Donoghue {
27829696e0aSBryan O'Donoghue static struct ieee80211_channel *channel;
27929696e0aSBryan O'Donoghue struct ieee80211_supported_band *sband;
28029696e0aSBryan O'Donoghue int idx;
28129696e0aSBryan O'Donoghue int i;
282e1a6b5d3SBryan O'Donoghue u8 snr_sample = snr & 0xff;
28329696e0aSBryan O'Donoghue
28429696e0aSBryan O'Donoghue idx = 0;
28529696e0aSBryan O'Donoghue if (band == NL80211_BAND_5GHZ)
28629696e0aSBryan O'Donoghue idx = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels;
28729696e0aSBryan O'Donoghue
28829696e0aSBryan O'Donoghue sband = wcn->hw->wiphy->bands[band];
28929696e0aSBryan O'Donoghue channel = sband->channels;
29029696e0aSBryan O'Donoghue
29129696e0aSBryan O'Donoghue for (i = 0; i < sband->n_channels; i++, channel++) {
29229696e0aSBryan O'Donoghue if (channel->center_freq == freq) {
29329696e0aSBryan O'Donoghue idx += i;
29429696e0aSBryan O'Donoghue break;
29529696e0aSBryan O'Donoghue }
29629696e0aSBryan O'Donoghue }
29729696e0aSBryan O'Donoghue
29829696e0aSBryan O'Donoghue spin_lock(&wcn->survey_lock);
29929696e0aSBryan O'Donoghue wcn->chan_survey[idx].rssi = rssi;
30029696e0aSBryan O'Donoghue wcn->chan_survey[idx].snr = snr;
30129696e0aSBryan O'Donoghue spin_unlock(&wcn->survey_lock);
302e1a6b5d3SBryan O'Donoghue
303e1a6b5d3SBryan O'Donoghue add_device_randomness(&snr_sample, sizeof(snr_sample));
30429696e0aSBryan O'Donoghue }
30529696e0aSBryan O'Donoghue
wcn36xx_rx_skb(struct wcn36xx * wcn,struct sk_buff * skb)3068e84c258SEugene Krasnikov int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
3078e84c258SEugene Krasnikov {
3088e84c258SEugene Krasnikov struct ieee80211_rx_status status;
3090aa90483SLoic Poulain const struct wcn36xx_rate *rate;
3108e84c258SEugene Krasnikov struct ieee80211_hdr *hdr;
3118e84c258SEugene Krasnikov struct wcn36xx_rx_bd *bd;
3128e84c258SEugene Krasnikov u16 fc, sn;
3138e84c258SEugene Krasnikov
3148e84c258SEugene Krasnikov /*
3158e84c258SEugene Krasnikov * All fields must be 0, otherwise it can lead to
3168e84c258SEugene Krasnikov * unexpected consequences.
3178e84c258SEugene Krasnikov */
3188e84c258SEugene Krasnikov memset(&status, 0, sizeof(status));
3198e84c258SEugene Krasnikov
3208e84c258SEugene Krasnikov bd = (struct wcn36xx_rx_bd *)skb->data;
321*fba52950SKalle Valo buff_to_be(bd, sizeof(*bd)/sizeof(u32));
3228e84c258SEugene Krasnikov wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP,
3238e84c258SEugene Krasnikov "BD <<< ", (char *)bd,
3248e84c258SEugene Krasnikov sizeof(struct wcn36xx_rx_bd));
3258e84c258SEugene Krasnikov
326a224b47aSLoic Poulain if (bd->pdu.mpdu_data_off <= bd->pdu.mpdu_header_off ||
327a224b47aSLoic Poulain bd->pdu.mpdu_len < bd->pdu.mpdu_header_len)
328a224b47aSLoic Poulain goto drop;
329a224b47aSLoic Poulain
330a224b47aSLoic Poulain if (bd->asf && !bd->esf) { /* chained A-MSDU chunks */
331a224b47aSLoic Poulain /* Sanity check */
332a224b47aSLoic Poulain if (bd->pdu.mpdu_data_off + bd->pdu.mpdu_len > WCN36XX_PKT_SIZE)
333a224b47aSLoic Poulain goto drop;
334a224b47aSLoic Poulain
335a224b47aSLoic Poulain skb_put(skb, bd->pdu.mpdu_data_off + bd->pdu.mpdu_len);
336a224b47aSLoic Poulain skb_pull(skb, bd->pdu.mpdu_data_off);
337a224b47aSLoic Poulain
338a224b47aSLoic Poulain /* Only set status for first chained BD (with mac header) */
339a224b47aSLoic Poulain goto done;
340a224b47aSLoic Poulain }
341a224b47aSLoic Poulain
342a224b47aSLoic Poulain if (bd->pdu.mpdu_header_off < sizeof(*bd) ||
343a224b47aSLoic Poulain bd->pdu.mpdu_header_off + bd->pdu.mpdu_len > WCN36XX_PKT_SIZE)
344a224b47aSLoic Poulain goto drop;
345a224b47aSLoic Poulain
3468e84c258SEugene Krasnikov skb_put(skb, bd->pdu.mpdu_header_off + bd->pdu.mpdu_len);
3478e84c258SEugene Krasnikov skb_pull(skb, bd->pdu.mpdu_header_off);
3488e84c258SEugene Krasnikov
34988603903SBjorn Andersson hdr = (struct ieee80211_hdr *) skb->data;
35088603903SBjorn Andersson fc = __le16_to_cpu(hdr->frame_control);
35188603903SBjorn Andersson sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
35288603903SBjorn Andersson
35388603903SBjorn Andersson status.mactime = 10;
3548e84c258SEugene Krasnikov status.signal = -get_rssi0(bd);
3558e84c258SEugene Krasnikov status.antenna = 1;
3568e84c258SEugene Krasnikov status.flag = 0;
3578e84c258SEugene Krasnikov status.rx_flags = 0;
3588e84c258SEugene Krasnikov status.flag |= RX_FLAG_IV_STRIPPED |
3598e84c258SEugene Krasnikov RX_FLAG_MMIC_STRIPPED |
3608e84c258SEugene Krasnikov RX_FLAG_DECRYPTED;
3618e84c258SEugene Krasnikov
3627fdd69c5SJohannes Berg wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag);
3638e84c258SEugene Krasnikov
364c9c5608fSBenjamin Li if (bd->scan_learn) {
365c9c5608fSBenjamin Li /* If packet originate from hardware scanning, extract the
366c9c5608fSBenjamin Li * band/channel from bd descriptor.
367c9c5608fSBenjamin Li */
368c9c5608fSBenjamin Li u8 hwch = (bd->reserved0 << 4) + bd->rx_ch;
369c9c5608fSBenjamin Li
370c9c5608fSBenjamin Li if (bd->rf_band != 1 && hwch <= sizeof(ab_rx_ch_map) && hwch >= 1) {
371c9c5608fSBenjamin Li status.band = NL80211_BAND_5GHZ;
372c9c5608fSBenjamin Li status.freq = ieee80211_channel_to_frequency(ab_rx_ch_map[hwch - 1],
373c9c5608fSBenjamin Li status.band);
374c9c5608fSBenjamin Li } else {
375c9c5608fSBenjamin Li status.band = NL80211_BAND_2GHZ;
376c9c5608fSBenjamin Li status.freq = ieee80211_channel_to_frequency(hwch, status.band);
377c9c5608fSBenjamin Li }
378c9c5608fSBenjamin Li } else {
379c9c5608fSBenjamin Li status.band = WCN36XX_BAND(wcn);
380c9c5608fSBenjamin Li status.freq = WCN36XX_CENTER_FREQ(wcn);
381c9c5608fSBenjamin Li }
382c9c5608fSBenjamin Li
38329696e0aSBryan O'Donoghue wcn36xx_update_survey(wcn, status.signal, get_snr(bd),
38429696e0aSBryan O'Donoghue status.band, status.freq);
38529696e0aSBryan O'Donoghue
3860aa90483SLoic Poulain if (bd->rate_id < ARRAY_SIZE(wcn36xx_rate_table)) {
3870aa90483SLoic Poulain rate = &wcn36xx_rate_table[bd->rate_id];
3880aa90483SLoic Poulain status.encoding = rate->encoding;
3890aa90483SLoic Poulain status.enc_flags = rate->encoding_flags;
3900aa90483SLoic Poulain status.bw = rate->bw;
3910aa90483SLoic Poulain status.rate_idx = rate->mcs_or_legacy_index;
3921af05d43SBryan O'Donoghue status.nss = 1;
3936ea131acSLoic Poulain
3946ea131acSLoic Poulain if (status.band == NL80211_BAND_5GHZ &&
3956ea131acSLoic Poulain status.encoding == RX_ENC_LEGACY &&
396cfdf6b19SBenjamin Li status.rate_idx >= 4) {
3976ea131acSLoic Poulain /* no dsss rates in 5Ghz rates table */
3986ea131acSLoic Poulain status.rate_idx -= 4;
3996ea131acSLoic Poulain }
4000aa90483SLoic Poulain } else {
4010aa90483SLoic Poulain status.encoding = 0;
4020aa90483SLoic Poulain status.bw = 0;
4030aa90483SLoic Poulain status.enc_flags = 0;
4040aa90483SLoic Poulain status.rate_idx = 0;
4050aa90483SLoic Poulain }
4060aa90483SLoic Poulain
4078678fd31SLoic Poulain if (ieee80211_is_beacon(hdr->frame_control) ||
4088678fd31SLoic Poulain ieee80211_is_probe_resp(hdr->frame_control))
4098678fd31SLoic Poulain status.boottime_ns = ktime_get_boottime_ns();
4108678fd31SLoic Poulain
4118e84c258SEugene Krasnikov memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
4128e84c258SEugene Krasnikov
4138e84c258SEugene Krasnikov if (ieee80211_is_beacon(hdr->frame_control)) {
4148e84c258SEugene Krasnikov wcn36xx_dbg(WCN36XX_DBG_BEACON, "beacon skb %p len %d fc %04x sn %d\n",
4158e84c258SEugene Krasnikov skb, skb->len, fc, sn);
4168e84c258SEugene Krasnikov wcn36xx_dbg_dump(WCN36XX_DBG_BEACON_DUMP, "SKB <<< ",
4178e84c258SEugene Krasnikov (char *)skb->data, skb->len);
4188e84c258SEugene Krasnikov } else {
4198e84c258SEugene Krasnikov wcn36xx_dbg(WCN36XX_DBG_RX, "rx skb %p len %d fc %04x sn %d\n",
4208e84c258SEugene Krasnikov skb, skb->len, fc, sn);
4218e84c258SEugene Krasnikov wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP, "SKB <<< ",
4228e84c258SEugene Krasnikov (char *)skb->data, skb->len);
4238e84c258SEugene Krasnikov }
4248e84c258SEugene Krasnikov
425a224b47aSLoic Poulain done:
426a224b47aSLoic Poulain /* Chained AMSDU ? slow path */
427a224b47aSLoic Poulain if (unlikely(bd->asf && !(bd->lsf && bd->esf))) {
428a224b47aSLoic Poulain if (bd->esf && !skb_queue_empty(&wcn->amsdu)) {
429a224b47aSLoic Poulain wcn36xx_err("Discarding non complete chain");
430a224b47aSLoic Poulain __skb_queue_purge_irq(&wcn->amsdu);
431a224b47aSLoic Poulain }
432a224b47aSLoic Poulain
433a224b47aSLoic Poulain __skb_queue_tail(&wcn->amsdu, skb);
434a224b47aSLoic Poulain
435a224b47aSLoic Poulain if (!bd->lsf)
436a224b47aSLoic Poulain return 0; /* Not the last AMSDU, wait for more */
437a224b47aSLoic Poulain
438a224b47aSLoic Poulain skb = wcn36xx_unchain_msdu(&wcn->amsdu);
439a224b47aSLoic Poulain if (!skb)
440a224b47aSLoic Poulain goto drop;
441a224b47aSLoic Poulain }
442a224b47aSLoic Poulain
4438e84c258SEugene Krasnikov ieee80211_rx_irqsafe(wcn->hw, skb);
4448e84c258SEugene Krasnikov
4458e84c258SEugene Krasnikov return 0;
446a224b47aSLoic Poulain
447a224b47aSLoic Poulain drop: /* drop everything */
448a224b47aSLoic Poulain wcn36xx_err("Drop frame! skb:%p len:%u hoff:%u doff:%u asf=%u esf=%u lsf=%u\n",
449a224b47aSLoic Poulain skb, bd->pdu.mpdu_len, bd->pdu.mpdu_header_off,
450a224b47aSLoic Poulain bd->pdu.mpdu_data_off, bd->asf, bd->esf, bd->lsf);
451a224b47aSLoic Poulain
452a224b47aSLoic Poulain dev_kfree_skb_irq(skb);
453a224b47aSLoic Poulain __skb_queue_purge_irq(&wcn->amsdu);
454a224b47aSLoic Poulain
455a224b47aSLoic Poulain return -EINVAL;
4568e84c258SEugene Krasnikov }
4578e84c258SEugene Krasnikov
wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd * bd,u32 mpdu_header_len,u32 len,u16 tid)4588e84c258SEugene Krasnikov static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd,
4598e84c258SEugene Krasnikov u32 mpdu_header_len,
4608e84c258SEugene Krasnikov u32 len,
4618e84c258SEugene Krasnikov u16 tid)
4628e84c258SEugene Krasnikov {
4638e84c258SEugene Krasnikov bd->pdu.mpdu_header_len = mpdu_header_len;
4648e84c258SEugene Krasnikov bd->pdu.mpdu_header_off = sizeof(*bd);
4658e84c258SEugene Krasnikov bd->pdu.mpdu_data_off = bd->pdu.mpdu_header_len +
4668e84c258SEugene Krasnikov bd->pdu.mpdu_header_off;
4678e84c258SEugene Krasnikov bd->pdu.mpdu_len = len;
4688e84c258SEugene Krasnikov bd->pdu.tid = tid;
4698e84c258SEugene Krasnikov }
4708e84c258SEugene Krasnikov
get_vif_by_addr(struct wcn36xx * wcn,u8 * addr)4718e84c258SEugene Krasnikov static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn,
4728e84c258SEugene Krasnikov u8 *addr)
4738e84c258SEugene Krasnikov {
4748e84c258SEugene Krasnikov struct wcn36xx_vif *vif_priv = NULL;
4758e84c258SEugene Krasnikov struct ieee80211_vif *vif = NULL;
4768e84c258SEugene Krasnikov list_for_each_entry(vif_priv, &wcn->vif_list, list) {
477ce75877fSPontus Fuchs vif = wcn36xx_priv_to_vif(vif_priv);
4788e84c258SEugene Krasnikov if (memcmp(vif->addr, addr, ETH_ALEN) == 0)
4798e84c258SEugene Krasnikov return vif_priv;
4808e84c258SEugene Krasnikov }
4818e84c258SEugene Krasnikov wcn36xx_warn("vif %pM not found\n", addr);
4828e84c258SEugene Krasnikov return NULL;
4838e84c258SEugene Krasnikov }
484e26dc173SBob Copeland
wcn36xx_tx_start_ampdu(struct wcn36xx * wcn,struct wcn36xx_sta * sta_priv,struct sk_buff * skb)485e26dc173SBob Copeland static void wcn36xx_tx_start_ampdu(struct wcn36xx *wcn,
486e26dc173SBob Copeland struct wcn36xx_sta *sta_priv,
487e26dc173SBob Copeland struct sk_buff *skb)
488e26dc173SBob Copeland {
489e26dc173SBob Copeland struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
490e26dc173SBob Copeland struct ieee80211_sta *sta;
491e26dc173SBob Copeland u8 *qc, tid;
492e26dc173SBob Copeland
493e26dc173SBob Copeland if (!conf_is_ht(&wcn->hw->conf))
494e26dc173SBob Copeland return;
495e26dc173SBob Copeland
496e26dc173SBob Copeland sta = wcn36xx_priv_to_sta(sta_priv);
497e26dc173SBob Copeland
498e26dc173SBob Copeland if (WARN_ON(!ieee80211_is_data_qos(hdr->frame_control)))
499e26dc173SBob Copeland return;
500e26dc173SBob Copeland
501e26dc173SBob Copeland if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
502e26dc173SBob Copeland return;
503e26dc173SBob Copeland
504e26dc173SBob Copeland qc = ieee80211_get_qos_ctl(hdr);
505e26dc173SBob Copeland tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
506e26dc173SBob Copeland
507e26dc173SBob Copeland spin_lock(&sta_priv->ampdu_lock);
508e26dc173SBob Copeland if (sta_priv->ampdu_state[tid] != WCN36XX_AMPDU_NONE)
509e26dc173SBob Copeland goto out_unlock;
510e26dc173SBob Copeland
511e26dc173SBob Copeland if (sta_priv->non_agg_frame_ct++ >= WCN36XX_AMPDU_START_THRESH) {
512e26dc173SBob Copeland sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
513e26dc173SBob Copeland sta_priv->non_agg_frame_ct = 0;
514e26dc173SBob Copeland ieee80211_start_tx_ba_session(sta, tid, 0);
515e26dc173SBob Copeland }
516e26dc173SBob Copeland out_unlock:
517e26dc173SBob Copeland spin_unlock(&sta_priv->ampdu_lock);
518e26dc173SBob Copeland }
519e26dc173SBob Copeland
wcn36xx_set_tx_data(struct wcn36xx_tx_bd * bd,struct wcn36xx * wcn,struct wcn36xx_vif ** vif_priv,struct wcn36xx_sta * sta_priv,struct sk_buff * skb,bool bcast)5208e84c258SEugene Krasnikov static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd,
5218e84c258SEugene Krasnikov struct wcn36xx *wcn,
5228e84c258SEugene Krasnikov struct wcn36xx_vif **vif_priv,
5238e84c258SEugene Krasnikov struct wcn36xx_sta *sta_priv,
5245f3f9285SBob Copeland struct sk_buff *skb,
5258e84c258SEugene Krasnikov bool bcast)
5268e84c258SEugene Krasnikov {
5275f3f9285SBob Copeland struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
528512b191dSLoic Poulain struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
5298e84c258SEugene Krasnikov struct ieee80211_vif *vif = NULL;
5308e84c258SEugene Krasnikov struct wcn36xx_vif *__vif_priv = NULL;
531512b191dSLoic Poulain bool is_data_qos = ieee80211_is_data_qos(hdr->frame_control);
532512b191dSLoic Poulain u16 tid = 0;
533e26dc173SBob Copeland
5348e84c258SEugene Krasnikov bd->bd_rate = WCN36XX_BD_RATE_DATA;
5358e84c258SEugene Krasnikov
5368e84c258SEugene Krasnikov /*
5378e84c258SEugene Krasnikov * For not unicast frames mac80211 will not set sta pointer so use
5388e84c258SEugene Krasnikov * self_sta_index instead.
5398e84c258SEugene Krasnikov */
5408e84c258SEugene Krasnikov if (sta_priv) {
5418e84c258SEugene Krasnikov __vif_priv = sta_priv->vif;
542ce75877fSPontus Fuchs vif = wcn36xx_priv_to_vif(__vif_priv);
5438e84c258SEugene Krasnikov
54482cad2a0SPontus Fuchs bd->dpu_sign = sta_priv->ucast_dpu_sign;
5458e84c258SEugene Krasnikov if (vif->type == NL80211_IFTYPE_STATION) {
5468e84c258SEugene Krasnikov bd->sta_index = sta_priv->bss_sta_index;
5478e84c258SEugene Krasnikov bd->dpu_desc_idx = sta_priv->bss_dpu_desc_index;
5488e84c258SEugene Krasnikov } else if (vif->type == NL80211_IFTYPE_AP ||
5498e84c258SEugene Krasnikov vif->type == NL80211_IFTYPE_ADHOC ||
5508e84c258SEugene Krasnikov vif->type == NL80211_IFTYPE_MESH_POINT) {
5518e84c258SEugene Krasnikov bd->sta_index = sta_priv->sta_index;
5528e84c258SEugene Krasnikov bd->dpu_desc_idx = sta_priv->dpu_desc_index;
5538e84c258SEugene Krasnikov }
5548e84c258SEugene Krasnikov } else {
5558e84c258SEugene Krasnikov __vif_priv = get_vif_by_addr(wcn, hdr->addr2);
5568e84c258SEugene Krasnikov bd->sta_index = __vif_priv->self_sta_index;
5578e84c258SEugene Krasnikov bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index;
5582ba0b461SPontus Fuchs bd->dpu_sign = __vif_priv->self_ucast_dpu_sign;
55982cad2a0SPontus Fuchs }
5608e84c258SEugene Krasnikov
561512b191dSLoic Poulain if (is_data_qos) {
562512b191dSLoic Poulain tid = ieee80211_get_tid(hdr);
563512b191dSLoic Poulain /* TID->QID is one-to-one mapping */
564512b191dSLoic Poulain bd->queue_id = tid;
565113f304dSLoic Poulain bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_QOS;
566113f304dSLoic Poulain } else {
567113f304dSLoic Poulain bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_NON_QOS;
568512b191dSLoic Poulain }
569512b191dSLoic Poulain
570512b191dSLoic Poulain if (info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT ||
571fdf21cc3SLoic Poulain (sta_priv && !sta_priv->is_data_encrypted)) {
5728e84c258SEugene Krasnikov bd->dpu_ne = 1;
573fdf21cc3SLoic Poulain }
5748e84c258SEugene Krasnikov
575512b191dSLoic Poulain if (ieee80211_is_any_nullfunc(hdr->frame_control)) {
576512b191dSLoic Poulain /* Don't use a regular queue for null packet (no ampdu) */
577512b191dSLoic Poulain bd->queue_id = WCN36XX_TX_U_WQ_ID;
578d3fd2c95SLoic Poulain bd->bd_rate = WCN36XX_BD_RATE_CTRL;
579113f304dSLoic Poulain if (ieee80211_is_qos_nullfunc(hdr->frame_control))
580113f304dSLoic Poulain bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_HOST;
581512b191dSLoic Poulain }
582512b191dSLoic Poulain
5838e84c258SEugene Krasnikov if (bcast) {
5848e84c258SEugene Krasnikov bd->ub = 1;
5858e84c258SEugene Krasnikov bd->ack_policy = 1;
5868e84c258SEugene Krasnikov }
5878e84c258SEugene Krasnikov *vif_priv = __vif_priv;
5885f3f9285SBob Copeland
5895f3f9285SBob Copeland wcn36xx_set_tx_pdu(bd,
590e26dc173SBob Copeland is_data_qos ?
5915f3f9285SBob Copeland sizeof(struct ieee80211_qos_hdr) :
5925f3f9285SBob Copeland sizeof(struct ieee80211_hdr_3addr),
593512b191dSLoic Poulain skb->len, tid);
594e26dc173SBob Copeland
595e26dc173SBob Copeland if (sta_priv && is_data_qos)
596e26dc173SBob Copeland wcn36xx_tx_start_ampdu(wcn, sta_priv, skb);
5978e84c258SEugene Krasnikov }
5988e84c258SEugene Krasnikov
wcn36xx_set_tx_mgmt(struct wcn36xx_tx_bd * bd,struct wcn36xx * wcn,struct wcn36xx_vif ** vif_priv,struct sk_buff * skb,bool bcast)5998e84c258SEugene Krasnikov static void wcn36xx_set_tx_mgmt(struct wcn36xx_tx_bd *bd,
6008e84c258SEugene Krasnikov struct wcn36xx *wcn,
6018e84c258SEugene Krasnikov struct wcn36xx_vif **vif_priv,
6025f3f9285SBob Copeland struct sk_buff *skb,
6038e84c258SEugene Krasnikov bool bcast)
6048e84c258SEugene Krasnikov {
6055f3f9285SBob Copeland struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
6068e84c258SEugene Krasnikov struct wcn36xx_vif *__vif_priv =
6078e84c258SEugene Krasnikov get_vif_by_addr(wcn, hdr->addr2);
6088e84c258SEugene Krasnikov bd->sta_index = __vif_priv->self_sta_index;
6098e84c258SEugene Krasnikov bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index;
6108e84c258SEugene Krasnikov bd->dpu_ne = 1;
6118e84c258SEugene Krasnikov
6128e84c258SEugene Krasnikov /* default rate for unicast */
6138e84c258SEugene Krasnikov if (ieee80211_is_mgmt(hdr->frame_control))
61457fbcce3SJohannes Berg bd->bd_rate = (WCN36XX_BAND(wcn) == NL80211_BAND_5GHZ) ?
6158e84c258SEugene Krasnikov WCN36XX_BD_RATE_CTRL :
6168e84c258SEugene Krasnikov WCN36XX_BD_RATE_MGMT;
6178e84c258SEugene Krasnikov else if (ieee80211_is_ctl(hdr->frame_control))
6188e84c258SEugene Krasnikov bd->bd_rate = WCN36XX_BD_RATE_CTRL;
6198e84c258SEugene Krasnikov else
6208e84c258SEugene Krasnikov wcn36xx_warn("frame control type unknown\n");
6218e84c258SEugene Krasnikov
6228e84c258SEugene Krasnikov /*
6238e84c258SEugene Krasnikov * In joining state trick hardware that probe is sent as
6248e84c258SEugene Krasnikov * unicast even if address is broadcast.
6258e84c258SEugene Krasnikov */
6268e84c258SEugene Krasnikov if (__vif_priv->is_joining &&
6278e84c258SEugene Krasnikov ieee80211_is_probe_req(hdr->frame_control))
6288e84c258SEugene Krasnikov bcast = false;
6298e84c258SEugene Krasnikov
6308e84c258SEugene Krasnikov if (bcast) {
6318e84c258SEugene Krasnikov /* broadcast */
6328e84c258SEugene Krasnikov bd->ub = 1;
6338e84c258SEugene Krasnikov /* No ack needed not unicast */
6348e84c258SEugene Krasnikov bd->ack_policy = 1;
6358e84c258SEugene Krasnikov bd->queue_id = WCN36XX_TX_B_WQ_ID;
6368e84c258SEugene Krasnikov } else
6378e84c258SEugene Krasnikov bd->queue_id = WCN36XX_TX_U_WQ_ID;
6388e84c258SEugene Krasnikov *vif_priv = __vif_priv;
6395f3f9285SBob Copeland
640113f304dSLoic Poulain bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_NON_QOS;
641113f304dSLoic Poulain
6425f3f9285SBob Copeland wcn36xx_set_tx_pdu(bd,
6435f3f9285SBob Copeland ieee80211_is_data_qos(hdr->frame_control) ?
6445f3f9285SBob Copeland sizeof(struct ieee80211_qos_hdr) :
6455f3f9285SBob Copeland sizeof(struct ieee80211_hdr_3addr),
6465f3f9285SBob Copeland skb->len, WCN36XX_TID);
6478e84c258SEugene Krasnikov }
6488e84c258SEugene Krasnikov
wcn36xx_start_tx(struct wcn36xx * wcn,struct wcn36xx_sta * sta_priv,struct sk_buff * skb)6498e84c258SEugene Krasnikov int wcn36xx_start_tx(struct wcn36xx *wcn,
6508e84c258SEugene Krasnikov struct wcn36xx_sta *sta_priv,
6518e84c258SEugene Krasnikov struct sk_buff *skb)
6528e84c258SEugene Krasnikov {
6538e84c258SEugene Krasnikov struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
6548e84c258SEugene Krasnikov struct wcn36xx_vif *vif_priv = NULL;
6558e84c258SEugene Krasnikov struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
6568e84c258SEugene Krasnikov bool is_low = ieee80211_is_data(hdr->frame_control);
6578e84c258SEugene Krasnikov bool bcast = is_broadcast_ether_addr(hdr->addr1) ||
6588e84c258SEugene Krasnikov is_multicast_ether_addr(hdr->addr1);
659a9e79b11SLoic Poulain bool ack_ind = (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) &&
660a9e79b11SLoic Poulain !(info->flags & IEEE80211_TX_CTL_NO_ACK);
661e5f99081SLoic Poulain struct wcn36xx_tx_bd bd;
662271f1e65SDaniel Mack int ret;
6638e84c258SEugene Krasnikov
664e5f99081SLoic Poulain memset(&bd, 0, sizeof(bd));
6658e84c258SEugene Krasnikov
6668e84c258SEugene Krasnikov wcn36xx_dbg(WCN36XX_DBG_TX,
6678e84c258SEugene Krasnikov "tx skb %p len %d fc %04x sn %d %s %s\n",
6688e84c258SEugene Krasnikov skb, skb->len, __le16_to_cpu(hdr->frame_control),
6698e84c258SEugene Krasnikov IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)),
6708e84c258SEugene Krasnikov is_low ? "low" : "high", bcast ? "bcast" : "ucast");
6718e84c258SEugene Krasnikov
6728e84c258SEugene Krasnikov wcn36xx_dbg_dump(WCN36XX_DBG_TX_DUMP, "", skb->data, skb->len);
6738e84c258SEugene Krasnikov
674e5f99081SLoic Poulain bd.dpu_rf = WCN36XX_BMU_WQ_TX;
6758e84c258SEugene Krasnikov
676a9e79b11SLoic Poulain if (unlikely(ack_ind)) {
6778e84c258SEugene Krasnikov wcn36xx_dbg(WCN36XX_DBG_DXE, "TX_ACK status requested\n");
678fdf21cc3SLoic Poulain
6798e84c258SEugene Krasnikov /* Only one at a time is supported by fw. Stop the TX queues
6808e84c258SEugene Krasnikov * until the ack status gets back.
6818e84c258SEugene Krasnikov */
6828e84c258SEugene Krasnikov ieee80211_stop_queues(wcn->hw);
683fdf21cc3SLoic Poulain
684fdf21cc3SLoic Poulain /* Request ack indication from the firmware */
685fdf21cc3SLoic Poulain bd.tx_comp = 1;
6868e84c258SEugene Krasnikov }
6878e84c258SEugene Krasnikov
6888e84c258SEugene Krasnikov /* Data frames served first*/
6895f3f9285SBob Copeland if (is_low)
690e5f99081SLoic Poulain wcn36xx_set_tx_data(&bd, wcn, &vif_priv, sta_priv, skb, bcast);
6915f3f9285SBob Copeland else
6928e84c258SEugene Krasnikov /* MGMT and CTRL frames are handeld here*/
693e5f99081SLoic Poulain wcn36xx_set_tx_mgmt(&bd, wcn, &vif_priv, skb, bcast);
6948e84c258SEugene Krasnikov
695*fba52950SKalle Valo buff_to_be(&bd, sizeof(bd)/sizeof(u32));
696e5f99081SLoic Poulain bd.tx_bd_sign = 0xbdbdbdbd;
6978e84c258SEugene Krasnikov
698271f1e65SDaniel Mack ret = wcn36xx_dxe_tx_frame(wcn, vif_priv, &bd, skb, is_low);
699a9e79b11SLoic Poulain if (unlikely(ret && ack_ind)) {
700a9e79b11SLoic Poulain /* If the skb has not been transmitted, resume TX queue */
701271f1e65SDaniel Mack ieee80211_wake_queues(wcn->hw);
702271f1e65SDaniel Mack }
703271f1e65SDaniel Mack
704271f1e65SDaniel Mack return ret;
7058e84c258SEugene Krasnikov }
7061216c4d3SEdmond Gagnon
wcn36xx_process_tx_rate(struct ani_global_class_a_stats_info * stats,struct rate_info * info)7071216c4d3SEdmond Gagnon void wcn36xx_process_tx_rate(struct ani_global_class_a_stats_info *stats, struct rate_info *info)
7081216c4d3SEdmond Gagnon {
7091216c4d3SEdmond Gagnon /* tx_rate is in units of 500kbps; mac80211 wants them in 100kbps */
7101216c4d3SEdmond Gagnon if (stats->tx_rate_flags & HAL_TX_RATE_LEGACY)
7111216c4d3SEdmond Gagnon info->legacy = stats->tx_rate * 5;
7121216c4d3SEdmond Gagnon
7131216c4d3SEdmond Gagnon info->flags = 0;
7141216c4d3SEdmond Gagnon info->mcs = stats->mcs_index;
7151216c4d3SEdmond Gagnon info->nss = 1;
7161216c4d3SEdmond Gagnon
7171216c4d3SEdmond Gagnon if (stats->tx_rate_flags & (HAL_TX_RATE_HT20 | HAL_TX_RATE_HT40))
7181216c4d3SEdmond Gagnon info->flags |= RATE_INFO_FLAGS_MCS;
7191216c4d3SEdmond Gagnon
7201216c4d3SEdmond Gagnon if (stats->tx_rate_flags & (HAL_TX_RATE_VHT20 | HAL_TX_RATE_VHT40 | HAL_TX_RATE_VHT80))
7211216c4d3SEdmond Gagnon info->flags |= RATE_INFO_FLAGS_VHT_MCS;
7221216c4d3SEdmond Gagnon
7231216c4d3SEdmond Gagnon if (stats->tx_rate_flags & HAL_TX_RATE_SGI)
7241216c4d3SEdmond Gagnon info->flags |= RATE_INFO_FLAGS_SHORT_GI;
7251216c4d3SEdmond Gagnon
7261216c4d3SEdmond Gagnon if (stats->tx_rate_flags & (HAL_TX_RATE_HT20 | HAL_TX_RATE_VHT20))
7271216c4d3SEdmond Gagnon info->bw = RATE_INFO_BW_20;
7281216c4d3SEdmond Gagnon
7291216c4d3SEdmond Gagnon if (stats->tx_rate_flags & (HAL_TX_RATE_HT40 | HAL_TX_RATE_VHT40))
7301216c4d3SEdmond Gagnon info->bw = RATE_INFO_BW_40;
7311216c4d3SEdmond Gagnon
7321216c4d3SEdmond Gagnon if (stats->tx_rate_flags & HAL_TX_RATE_VHT80)
7331216c4d3SEdmond Gagnon info->bw = RATE_INFO_BW_80;
7341216c4d3SEdmond Gagnon }
735