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kunit / linux / 006309132f57ccc20dd69e971e2041ebd2cbb7e5 / . / drivers / net / wireless / brcm80211 / brcmsmac / rate.c
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/*
* 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);
}