forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
514 lines
16 KiB
514 lines
16 KiB
/* |
|
* Copyright (c) 2010 Broadcom Corporation |
|
* |
|
* Permission to use, copy, modify, and/or distribute this software for any |
|
* purpose with or without fee is hereby granted, provided that the above |
|
* copyright notice and this permission notice appear in all copies. |
|
* |
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
|
*/ |
|
|
|
#include <brcmu_wifi.h> |
|
#include <brcmu_utils.h> |
|
|
|
#include "d11.h" |
|
#include "pub.h" |
|
#include "rate.h" |
|
|
|
/* |
|
* Rate info per rate: It tells whether a rate is ofdm or not and its phy_rate |
|
* value |
|
*/ |
|
const u8 rate_info[BRCM_MAXRATE + 1] = { |
|
/* 0 1 2 3 4 5 6 7 8 9 */ |
|
/* 0 */ 0x00, 0x00, 0x0a, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 10 */ 0x00, 0x37, 0x8b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8f, 0x00, |
|
/* 20 */ 0x00, 0x00, 0x6e, 0x00, 0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00, 0x00, 0x00, |
|
/* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x89, 0x00, |
|
/* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 70 */ 0x00, 0x00, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
/* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x00, 0x00, 0x00, |
|
/* 100 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8c |
|
}; |
|
|
|
/* rates are in units of Kbps */ |
|
const struct brcms_mcs_info mcs_table[MCS_TABLE_SIZE] = { |
|
/* MCS 0: SS 1, MOD: BPSK, CR 1/2 */ |
|
{6500, 13500, CEIL(6500 * 10, 9), CEIL(13500 * 10, 9), 0x00, |
|
BRCM_RATE_6M}, |
|
/* MCS 1: SS 1, MOD: QPSK, CR 1/2 */ |
|
{13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x08, |
|
BRCM_RATE_12M}, |
|
/* MCS 2: SS 1, MOD: QPSK, CR 3/4 */ |
|
{19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x0A, |
|
BRCM_RATE_18M}, |
|
/* MCS 3: SS 1, MOD: 16QAM, CR 1/2 */ |
|
{26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x10, |
|
BRCM_RATE_24M}, |
|
/* MCS 4: SS 1, MOD: 16QAM, CR 3/4 */ |
|
{39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x12, |
|
BRCM_RATE_36M}, |
|
/* MCS 5: SS 1, MOD: 64QAM, CR 2/3 */ |
|
{52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x19, |
|
BRCM_RATE_48M}, |
|
/* MCS 6: SS 1, MOD: 64QAM, CR 3/4 */ |
|
{58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x1A, |
|
BRCM_RATE_54M}, |
|
/* MCS 7: SS 1, MOD: 64QAM, CR 5/6 */ |
|
{65000, 135000, CEIL(65000 * 10, 9), CEIL(135000 * 10, 9), 0x1C, |
|
BRCM_RATE_54M}, |
|
/* MCS 8: SS 2, MOD: BPSK, CR 1/2 */ |
|
{13000, 27000, CEIL(13000 * 10, 9), CEIL(27000 * 10, 9), 0x40, |
|
BRCM_RATE_6M}, |
|
/* MCS 9: SS 2, MOD: QPSK, CR 1/2 */ |
|
{26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0x48, |
|
BRCM_RATE_12M}, |
|
/* MCS 10: SS 2, MOD: QPSK, CR 3/4 */ |
|
{39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x4A, |
|
BRCM_RATE_18M}, |
|
/* MCS 11: SS 2, MOD: 16QAM, CR 1/2 */ |
|
{52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0x50, |
|
BRCM_RATE_24M}, |
|
/* MCS 12: SS 2, MOD: 16QAM, CR 3/4 */ |
|
{78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x52, |
|
BRCM_RATE_36M}, |
|
/* MCS 13: SS 2, MOD: 64QAM, CR 2/3 */ |
|
{104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0x59, |
|
BRCM_RATE_48M}, |
|
/* MCS 14: SS 2, MOD: 64QAM, CR 3/4 */ |
|
{117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x5A, |
|
BRCM_RATE_54M}, |
|
/* MCS 15: SS 2, MOD: 64QAM, CR 5/6 */ |
|
{130000, 270000, CEIL(130000 * 10, 9), CEIL(270000 * 10, 9), 0x5C, |
|
BRCM_RATE_54M}, |
|
/* MCS 16: SS 3, MOD: BPSK, CR 1/2 */ |
|
{19500, 40500, CEIL(19500 * 10, 9), CEIL(40500 * 10, 9), 0x80, |
|
BRCM_RATE_6M}, |
|
/* MCS 17: SS 3, MOD: QPSK, CR 1/2 */ |
|
{39000, 81000, CEIL(39000 * 10, 9), CEIL(81000 * 10, 9), 0x88, |
|
BRCM_RATE_12M}, |
|
/* MCS 18: SS 3, MOD: QPSK, CR 3/4 */ |
|
{58500, 121500, CEIL(58500 * 10, 9), CEIL(121500 * 10, 9), 0x8A, |
|
BRCM_RATE_18M}, |
|
/* MCS 19: SS 3, MOD: 16QAM, CR 1/2 */ |
|
{78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0x90, |
|
BRCM_RATE_24M}, |
|
/* MCS 20: SS 3, MOD: 16QAM, CR 3/4 */ |
|
{117000, 243000, CEIL(117000 * 10, 9), CEIL(243000 * 10, 9), 0x92, |
|
BRCM_RATE_36M}, |
|
/* MCS 21: SS 3, MOD: 64QAM, CR 2/3 */ |
|
{156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0x99, |
|
BRCM_RATE_48M}, |
|
/* MCS 22: SS 3, MOD: 64QAM, CR 3/4 */ |
|
{175500, 364500, CEIL(175500 * 10, 9), CEIL(364500 * 10, 9), 0x9A, |
|
BRCM_RATE_54M}, |
|
/* MCS 23: SS 3, MOD: 64QAM, CR 5/6 */ |
|
{195000, 405000, CEIL(195000 * 10, 9), CEIL(405000 * 10, 9), 0x9B, |
|
BRCM_RATE_54M}, |
|
/* MCS 24: SS 4, MOD: BPSK, CR 1/2 */ |
|
{26000, 54000, CEIL(26000 * 10, 9), CEIL(54000 * 10, 9), 0xC0, |
|
BRCM_RATE_6M}, |
|
/* MCS 25: SS 4, MOD: QPSK, CR 1/2 */ |
|
{52000, 108000, CEIL(52000 * 10, 9), CEIL(108000 * 10, 9), 0xC8, |
|
BRCM_RATE_12M}, |
|
/* MCS 26: SS 4, MOD: QPSK, CR 3/4 */ |
|
{78000, 162000, CEIL(78000 * 10, 9), CEIL(162000 * 10, 9), 0xCA, |
|
BRCM_RATE_18M}, |
|
/* MCS 27: SS 4, MOD: 16QAM, CR 1/2 */ |
|
{104000, 216000, CEIL(104000 * 10, 9), CEIL(216000 * 10, 9), 0xD0, |
|
BRCM_RATE_24M}, |
|
/* MCS 28: SS 4, MOD: 16QAM, CR 3/4 */ |
|
{156000, 324000, CEIL(156000 * 10, 9), CEIL(324000 * 10, 9), 0xD2, |
|
BRCM_RATE_36M}, |
|
/* MCS 29: SS 4, MOD: 64QAM, CR 2/3 */ |
|
{208000, 432000, CEIL(208000 * 10, 9), CEIL(432000 * 10, 9), 0xD9, |
|
BRCM_RATE_48M}, |
|
/* MCS 30: SS 4, MOD: 64QAM, CR 3/4 */ |
|
{234000, 486000, CEIL(234000 * 10, 9), CEIL(486000 * 10, 9), 0xDA, |
|
BRCM_RATE_54M}, |
|
/* MCS 31: SS 4, MOD: 64QAM, CR 5/6 */ |
|
{260000, 540000, CEIL(260000 * 10, 9), CEIL(540000 * 10, 9), 0xDB, |
|
BRCM_RATE_54M}, |
|
/* MCS 32: SS 1, MOD: BPSK, CR 1/2 */ |
|
{0, 6000, 0, CEIL(6000 * 10, 9), 0x00, BRCM_RATE_6M}, |
|
}; |
|
|
|
/* |
|
* phycfg for legacy OFDM frames: code rate, modulation scheme, spatial streams |
|
* Number of spatial streams: always 1 other fields: refer to table 78 of |
|
* section 17.3.2.2 of the original .11a standard |
|
*/ |
|
struct legacy_phycfg { |
|
u32 rate_ofdm; /* ofdm mac rate */ |
|
/* phy ctl byte 3, code rate, modulation type, # of streams */ |
|
u8 tx_phy_ctl3; |
|
}; |
|
|
|
/* Number of legacy_rate_cfg entries in the table */ |
|
#define LEGACY_PHYCFG_TABLE_SIZE 12 |
|
|
|
/* |
|
* In CCK mode LPPHY overloads OFDM Modulation bits with CCK Data Rate |
|
* Eventually MIMOPHY would also be converted to this format |
|
* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps |
|
*/ |
|
static const struct |
|
legacy_phycfg legacy_phycfg_table[LEGACY_PHYCFG_TABLE_SIZE] = { |
|
{BRCM_RATE_1M, 0x00}, /* CCK 1Mbps, data rate 0 */ |
|
{BRCM_RATE_2M, 0x08}, /* CCK 2Mbps, data rate 1 */ |
|
{BRCM_RATE_5M5, 0x10}, /* CCK 5.5Mbps, data rate 2 */ |
|
{BRCM_RATE_11M, 0x18}, /* CCK 11Mbps, data rate 3 */ |
|
/* OFDM 6Mbps, code rate 1/2, BPSK, 1 spatial stream */ |
|
{BRCM_RATE_6M, 0x00}, |
|
/* OFDM 9Mbps, code rate 3/4, BPSK, 1 spatial stream */ |
|
{BRCM_RATE_9M, 0x02}, |
|
/* OFDM 12Mbps, code rate 1/2, QPSK, 1 spatial stream */ |
|
{BRCM_RATE_12M, 0x08}, |
|
/* OFDM 18Mbps, code rate 3/4, QPSK, 1 spatial stream */ |
|
{BRCM_RATE_18M, 0x0A}, |
|
/* OFDM 24Mbps, code rate 1/2, 16-QAM, 1 spatial stream */ |
|
{BRCM_RATE_24M, 0x10}, |
|
/* OFDM 36Mbps, code rate 3/4, 16-QAM, 1 spatial stream */ |
|
{BRCM_RATE_36M, 0x12}, |
|
/* OFDM 48Mbps, code rate 2/3, 64-QAM, 1 spatial stream */ |
|
{BRCM_RATE_48M, 0x19}, |
|
/* OFDM 54Mbps, code rate 3/4, 64-QAM, 1 spatial stream */ |
|
{BRCM_RATE_54M, 0x1A}, |
|
}; |
|
|
|
/* Hardware rates (also encodes default basic rates) */ |
|
|
|
const struct brcms_c_rateset cck_ofdm_mimo_rates = { |
|
12, |
|
/* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48, */ |
|
{ 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
|
/* 54 Mbps */ |
|
0x6c}, |
|
0x00, |
|
{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
const struct brcms_c_rateset ofdm_mimo_rates = { |
|
8, |
|
/* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
|
{ 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
|
0x00, |
|
{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
/* Default ratesets that include MCS32 for 40BW channels */ |
|
static const struct brcms_c_rateset cck_ofdm_40bw_mimo_rates = { |
|
12, |
|
/* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48 */ |
|
{ 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
|
/* 54 Mbps */ |
|
0x6c}, |
|
0x00, |
|
{ 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
static const struct brcms_c_rateset ofdm_40bw_mimo_rates = { |
|
8, |
|
/* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
|
{ 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
|
0x00, |
|
{ 0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
const struct brcms_c_rateset cck_ofdm_rates = { |
|
12, |
|
/* 1b, 2b, 5.5b, 6, 9, 11b, 12, 18, 24, 36, 48,*/ |
|
{ 0x82, 0x84, 0x8b, 0x0c, 0x12, 0x96, 0x18, 0x24, 0x30, 0x48, 0x60, |
|
/*54 Mbps */ |
|
0x6c}, |
|
0x00, |
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
const struct brcms_c_rateset gphy_legacy_rates = { |
|
4, |
|
/* 1b, 2b, 5.5b, 11b Mbps */ |
|
{ 0x82, 0x84, 0x8b, 0x96}, |
|
0x00, |
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
const struct brcms_c_rateset ofdm_rates = { |
|
8, |
|
/* 6b, 9, 12b, 18, 24b, 36, 48, 54 Mbps */ |
|
{ 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c}, |
|
0x00, |
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
const struct brcms_c_rateset cck_rates = { |
|
4, |
|
/* 1b, 2b, 5.5, 11 Mbps */ |
|
{ 0x82, 0x84, 0x0b, 0x16}, |
|
0x00, |
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
|
0x00, 0x00, 0x00, 0x00, 0x00} |
|
}; |
|
|
|
/* check if rateset is valid. |
|
* if check_brate is true, rateset without a basic rate is considered NOT valid. |
|
*/ |
|
static bool brcms_c_rateset_valid(struct brcms_c_rateset *rs, bool check_brate) |
|
{ |
|
uint idx; |
|
|
|
if (!rs->count) |
|
return false; |
|
|
|
if (!check_brate) |
|
return true; |
|
|
|
/* error if no basic rates */ |
|
for (idx = 0; idx < rs->count; idx++) { |
|
if (rs->rates[idx] & BRCMS_RATE_FLAG) |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
void brcms_c_rateset_mcs_upd(struct brcms_c_rateset *rs, u8 txstreams) |
|
{ |
|
int i; |
|
for (i = txstreams; i < MAX_STREAMS_SUPPORTED; i++) |
|
rs->mcs[i] = 0; |
|
} |
|
|
|
/* |
|
* filter based on hardware rateset, and sort filtered rateset with basic |
|
* bit(s) preserved, and check if resulting rateset is valid. |
|
*/ |
|
bool |
|
brcms_c_rate_hwrs_filter_sort_validate(struct brcms_c_rateset *rs, |
|
const struct brcms_c_rateset *hw_rs, |
|
bool check_brate, u8 txstreams) |
|
{ |
|
u8 rateset[BRCM_MAXRATE + 1]; |
|
u8 r; |
|
uint count; |
|
uint i; |
|
|
|
memset(rateset, 0, sizeof(rateset)); |
|
count = rs->count; |
|
|
|
for (i = 0; i < count; i++) { |
|
/* mask off "basic rate" bit, BRCMS_RATE_FLAG */ |
|
r = (int)rs->rates[i] & BRCMS_RATE_MASK; |
|
if ((r > BRCM_MAXRATE) || (rate_info[r] == 0)) |
|
continue; |
|
rateset[r] = rs->rates[i]; /* preserve basic bit! */ |
|
} |
|
|
|
/* fill out the rates in order, looking at only supported rates */ |
|
count = 0; |
|
for (i = 0; i < hw_rs->count; i++) { |
|
r = hw_rs->rates[i] & BRCMS_RATE_MASK; |
|
if (rateset[r]) |
|
rs->rates[count++] = rateset[r]; |
|
} |
|
|
|
rs->count = count; |
|
|
|
/* only set the mcs rate bit if the equivalent hw mcs bit is set */ |
|
for (i = 0; i < MCSSET_LEN; i++) |
|
rs->mcs[i] = (rs->mcs[i] & hw_rs->mcs[i]); |
|
|
|
if (brcms_c_rateset_valid(rs, check_brate)) |
|
return true; |
|
else |
|
return false; |
|
} |
|
|
|
/* calculate the rate of a rx'd frame and return it as a ratespec */ |
|
u32 brcms_c_compute_rspec(struct d11rxhdr *rxh, u8 *plcp) |
|
{ |
|
int phy_type; |
|
u32 rspec = PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT; |
|
|
|
phy_type = |
|
((rxh->RxChan & RXS_CHAN_PHYTYPE_MASK) >> RXS_CHAN_PHYTYPE_SHIFT); |
|
|
|
if ((phy_type == PHY_TYPE_N) || (phy_type == PHY_TYPE_SSN) || |
|
(phy_type == PHY_TYPE_LCN) || (phy_type == PHY_TYPE_HT)) { |
|
switch (rxh->PhyRxStatus_0 & PRXS0_FT_MASK) { |
|
case PRXS0_CCK: |
|
rspec = |
|
cck_phy2mac_rate( |
|
((struct cck_phy_hdr *) plcp)->signal); |
|
break; |
|
case PRXS0_OFDM: |
|
rspec = |
|
ofdm_phy2mac_rate( |
|
((struct ofdm_phy_hdr *) plcp)->rlpt[0]); |
|
break; |
|
case PRXS0_PREN: |
|
rspec = (plcp[0] & MIMO_PLCP_MCS_MASK) | RSPEC_MIMORATE; |
|
if (plcp[0] & MIMO_PLCP_40MHZ) { |
|
/* indicate rspec is for 40 MHz mode */ |
|
rspec &= ~RSPEC_BW_MASK; |
|
rspec |= (PHY_TXC1_BW_40MHZ << RSPEC_BW_SHIFT); |
|
} |
|
break; |
|
case PRXS0_STDN: |
|
/* fallthru */ |
|
default: |
|
/* not supported, error condition */ |
|
break; |
|
} |
|
if (plcp3_issgi(plcp[3])) |
|
rspec |= RSPEC_SHORT_GI; |
|
} else |
|
if ((phy_type == PHY_TYPE_A) || (rxh->PhyRxStatus_0 & PRXS0_OFDM)) |
|
rspec = ofdm_phy2mac_rate( |
|
((struct ofdm_phy_hdr *) plcp)->rlpt[0]); |
|
else |
|
rspec = cck_phy2mac_rate( |
|
((struct cck_phy_hdr *) plcp)->signal); |
|
|
|
return rspec; |
|
} |
|
|
|
/* copy rateset src to dst as-is (no masking or sorting) */ |
|
void brcms_c_rateset_copy(const struct brcms_c_rateset *src, |
|
struct brcms_c_rateset *dst) |
|
{ |
|
memcpy(dst, src, sizeof(struct brcms_c_rateset)); |
|
} |
|
|
|
/* |
|
* Copy and selectively filter one rateset to another. |
|
* 'basic_only' means only copy basic rates. |
|
* 'rates' indicates cck (11b) and ofdm rates combinations. |
|
* - 0: cck and ofdm |
|
* - 1: cck only |
|
* - 2: ofdm only |
|
* 'xmask' is the copy mask (typically 0x7f or 0xff). |
|
*/ |
|
void |
|
brcms_c_rateset_filter(struct brcms_c_rateset *src, struct brcms_c_rateset *dst, |
|
bool basic_only, u8 rates, uint xmask, bool mcsallow) |
|
{ |
|
uint i; |
|
uint r; |
|
uint count; |
|
|
|
count = 0; |
|
for (i = 0; i < src->count; i++) { |
|
r = src->rates[i]; |
|
if (basic_only && !(r & BRCMS_RATE_FLAG)) |
|
continue; |
|
if (rates == BRCMS_RATES_CCK && |
|
is_ofdm_rate((r & BRCMS_RATE_MASK))) |
|
continue; |
|
if (rates == BRCMS_RATES_OFDM && |
|
is_cck_rate((r & BRCMS_RATE_MASK))) |
|
continue; |
|
dst->rates[count++] = r & xmask; |
|
} |
|
dst->count = count; |
|
dst->htphy_membership = src->htphy_membership; |
|
|
|
if (mcsallow && rates != BRCMS_RATES_CCK) |
|
memcpy(&dst->mcs[0], &src->mcs[0], MCSSET_LEN); |
|
else |
|
brcms_c_rateset_mcs_clear(dst); |
|
} |
|
|
|
/* select rateset for a given phy_type and bandtype and filter it, sort it |
|
* and fill rs_tgt with result |
|
*/ |
|
void |
|
brcms_c_rateset_default(struct brcms_c_rateset *rs_tgt, |
|
const struct brcms_c_rateset *rs_hw, |
|
uint phy_type, int bandtype, bool cck_only, |
|
uint rate_mask, bool mcsallow, u8 bw, u8 txstreams) |
|
{ |
|
const struct brcms_c_rateset *rs_dflt; |
|
struct brcms_c_rateset rs_sel; |
|
if ((PHYTYPE_IS(phy_type, PHY_TYPE_HT)) || |
|
(PHYTYPE_IS(phy_type, PHY_TYPE_N)) || |
|
(PHYTYPE_IS(phy_type, PHY_TYPE_LCN)) || |
|
(PHYTYPE_IS(phy_type, PHY_TYPE_SSN))) { |
|
if (bandtype == BRCM_BAND_5G) |
|
rs_dflt = (bw == BRCMS_20_MHZ ? |
|
&ofdm_mimo_rates : &ofdm_40bw_mimo_rates); |
|
else |
|
rs_dflt = (bw == BRCMS_20_MHZ ? |
|
&cck_ofdm_mimo_rates : |
|
&cck_ofdm_40bw_mimo_rates); |
|
} else if (PHYTYPE_IS(phy_type, PHY_TYPE_LP)) { |
|
rs_dflt = (bandtype == BRCM_BAND_5G) ? |
|
&ofdm_rates : &cck_ofdm_rates; |
|
} else if (PHYTYPE_IS(phy_type, PHY_TYPE_A)) { |
|
rs_dflt = &ofdm_rates; |
|
} else if (PHYTYPE_IS(phy_type, PHY_TYPE_G)) { |
|
rs_dflt = &cck_ofdm_rates; |
|
} else { |
|
/* should not happen, error condition */ |
|
rs_dflt = &cck_rates; /* force cck */ |
|
} |
|
|
|
/* if hw rateset is not supplied, assign selected rateset to it */ |
|
if (!rs_hw) |
|
rs_hw = rs_dflt; |
|
|
|
brcms_c_rateset_copy(rs_dflt, &rs_sel); |
|
brcms_c_rateset_mcs_upd(&rs_sel, txstreams); |
|
brcms_c_rateset_filter(&rs_sel, rs_tgt, false, |
|
cck_only ? BRCMS_RATES_CCK : BRCMS_RATES_CCK_OFDM, |
|
rate_mask, mcsallow); |
|
brcms_c_rate_hwrs_filter_sort_validate(rs_tgt, rs_hw, false, |
|
mcsallow ? txstreams : 1); |
|
} |
|
|
|
s16 brcms_c_rate_legacy_phyctl(uint rate) |
|
{ |
|
uint i; |
|
for (i = 0; i < LEGACY_PHYCFG_TABLE_SIZE; i++) |
|
if (rate == legacy_phycfg_table[i].rate_ofdm) |
|
return legacy_phycfg_table[i].tx_phy_ctl3; |
|
|
|
return -1; |
|
} |
|
|
|
void brcms_c_rateset_mcs_clear(struct brcms_c_rateset *rateset) |
|
{ |
|
uint i; |
|
for (i = 0; i < MCSSET_LEN; i++) |
|
rateset->mcs[i] = 0; |
|
} |
|
|
|
void brcms_c_rateset_mcs_build(struct brcms_c_rateset *rateset, u8 txstreams) |
|
{ |
|
memcpy(&rateset->mcs[0], &cck_ofdm_mimo_rates.mcs[0], MCSSET_LEN); |
|
brcms_c_rateset_mcs_upd(rateset, txstreams); |
|
} |
|
|
|
/* Based on bandwidth passed, allow/disallow MCS 32 in the rateset */ |
|
void brcms_c_rateset_bw_mcs_filter(struct brcms_c_rateset *rateset, u8 bw) |
|
{ |
|
if (bw == BRCMS_40_MHZ) |
|
setbit(rateset->mcs, 32); |
|
else |
|
clrbit(rateset->mcs, 32); |
|
}
|
|
|