Thomas Gleixner | c942fdd | 2019-05-27 08:55:06 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Rafał Miłecki | ec76643 | 2014-07-31 21:59:47 +0200 | [diff] [blame] | 2 | /* |
| 3 | * Broadcom B43 wireless driver |
| 4 | * PPR (Power Per Rate) management |
| 5 | * |
| 6 | * Copyright (c) 2014 Rafał Miłecki <zajec5@gmail.com> |
Rafał Miłecki | ec76643 | 2014-07-31 21:59:47 +0200 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "ppr.h" |
| 10 | #include "b43.h" |
| 11 | |
| 12 | #define ppr_for_each_entry(ppr, i, entry) \ |
| 13 | for (i = 0, entry = &(ppr)->__all_rates[i]; \ |
| 14 | i < B43_PPR_RATES_NUM; \ |
| 15 | i++, entry++) |
| 16 | |
| 17 | void b43_ppr_clear(struct b43_wldev *dev, struct b43_ppr *ppr) |
| 18 | { |
| 19 | memset(ppr, 0, sizeof(*ppr)); |
| 20 | |
| 21 | /* Compile-time PPR check */ |
| 22 | BUILD_BUG_ON(sizeof(struct b43_ppr) != B43_PPR_RATES_NUM * sizeof(u8)); |
| 23 | } |
| 24 | |
| 25 | void b43_ppr_add(struct b43_wldev *dev, struct b43_ppr *ppr, int diff) |
| 26 | { |
| 27 | int i; |
| 28 | u8 *rate; |
| 29 | |
| 30 | ppr_for_each_entry(ppr, i, rate) { |
| 31 | *rate = clamp_val(*rate + diff, 0, 127); |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | void b43_ppr_apply_max(struct b43_wldev *dev, struct b43_ppr *ppr, u8 max) |
| 36 | { |
| 37 | int i; |
| 38 | u8 *rate; |
| 39 | |
| 40 | ppr_for_each_entry(ppr, i, rate) { |
| 41 | *rate = min(*rate, max); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | void b43_ppr_apply_min(struct b43_wldev *dev, struct b43_ppr *ppr, u8 min) |
| 46 | { |
| 47 | int i; |
| 48 | u8 *rate; |
| 49 | |
| 50 | ppr_for_each_entry(ppr, i, rate) { |
| 51 | *rate = max(*rate, min); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | u8 b43_ppr_get_max(struct b43_wldev *dev, struct b43_ppr *ppr) |
| 56 | { |
| 57 | u8 res = 0; |
| 58 | int i; |
| 59 | u8 *rate; |
| 60 | |
| 61 | ppr_for_each_entry(ppr, i, rate) { |
| 62 | res = max(*rate, res); |
| 63 | } |
| 64 | |
| 65 | return res; |
| 66 | } |
| 67 | |
| 68 | bool b43_ppr_load_max_from_sprom(struct b43_wldev *dev, struct b43_ppr *ppr, |
| 69 | enum b43_band band) |
| 70 | { |
| 71 | struct b43_ppr_rates *rates = &ppr->rates; |
| 72 | struct ssb_sprom *sprom = dev->dev->bus_sprom; |
| 73 | struct b43_phy *phy = &dev->phy; |
| 74 | u8 maxpwr, off; |
| 75 | u32 sprom_ofdm_po; |
| 76 | u16 *sprom_mcs_po; |
| 77 | u8 extra_cdd_po, extra_stbc_po; |
| 78 | int i; |
| 79 | |
| 80 | switch (band) { |
| 81 | case B43_BAND_2G: |
| 82 | maxpwr = min(sprom->core_pwr_info[0].maxpwr_2g, |
| 83 | sprom->core_pwr_info[1].maxpwr_2g); |
| 84 | sprom_ofdm_po = sprom->ofdm2gpo; |
| 85 | sprom_mcs_po = sprom->mcs2gpo; |
| 86 | extra_cdd_po = (sprom->cddpo >> 0) & 0xf; |
| 87 | extra_stbc_po = (sprom->stbcpo >> 0) & 0xf; |
| 88 | break; |
| 89 | case B43_BAND_5G_LO: |
| 90 | maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gl, |
| 91 | sprom->core_pwr_info[1].maxpwr_5gl); |
| 92 | sprom_ofdm_po = sprom->ofdm5glpo; |
| 93 | sprom_mcs_po = sprom->mcs5glpo; |
| 94 | extra_cdd_po = (sprom->cddpo >> 8) & 0xf; |
| 95 | extra_stbc_po = (sprom->stbcpo >> 8) & 0xf; |
| 96 | break; |
| 97 | case B43_BAND_5G_MI: |
| 98 | maxpwr = min(sprom->core_pwr_info[0].maxpwr_5g, |
| 99 | sprom->core_pwr_info[1].maxpwr_5g); |
| 100 | sprom_ofdm_po = sprom->ofdm5gpo; |
| 101 | sprom_mcs_po = sprom->mcs5gpo; |
| 102 | extra_cdd_po = (sprom->cddpo >> 4) & 0xf; |
| 103 | extra_stbc_po = (sprom->stbcpo >> 4) & 0xf; |
| 104 | break; |
| 105 | case B43_BAND_5G_HI: |
| 106 | maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gh, |
| 107 | sprom->core_pwr_info[1].maxpwr_5gh); |
| 108 | sprom_ofdm_po = sprom->ofdm5ghpo; |
| 109 | sprom_mcs_po = sprom->mcs5ghpo; |
| 110 | extra_cdd_po = (sprom->cddpo >> 12) & 0xf; |
| 111 | extra_stbc_po = (sprom->stbcpo >> 12) & 0xf; |
| 112 | break; |
| 113 | default: |
| 114 | WARN_ON_ONCE(1); |
| 115 | return false; |
| 116 | } |
| 117 | |
| 118 | if (band == B43_BAND_2G) { |
| 119 | for (i = 0; i < 4; i++) { |
| 120 | off = ((sprom->cck2gpo >> (i * 4)) & 0xf) * 2; |
| 121 | rates->cck[i] = maxpwr - off; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | /* OFDM */ |
| 126 | for (i = 0; i < 8; i++) { |
| 127 | off = ((sprom_ofdm_po >> (i * 4)) & 0xf) * 2; |
| 128 | rates->ofdm[i] = maxpwr - off; |
| 129 | } |
| 130 | |
| 131 | /* MCS 20 SISO */ |
| 132 | rates->mcs_20[0] = rates->ofdm[0]; |
| 133 | rates->mcs_20[1] = rates->ofdm[2]; |
| 134 | rates->mcs_20[2] = rates->ofdm[3]; |
| 135 | rates->mcs_20[3] = rates->ofdm[4]; |
| 136 | rates->mcs_20[4] = rates->ofdm[5]; |
| 137 | rates->mcs_20[5] = rates->ofdm[6]; |
| 138 | rates->mcs_20[6] = rates->ofdm[7]; |
| 139 | rates->mcs_20[7] = rates->ofdm[7]; |
| 140 | |
| 141 | /* MCS 20 CDD */ |
| 142 | for (i = 0; i < 4; i++) { |
| 143 | off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2; |
| 144 | rates->mcs_20_cdd[i] = maxpwr - off; |
| 145 | if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
| 146 | rates->mcs_20_cdd[i] -= extra_cdd_po; |
| 147 | } |
| 148 | for (i = 0; i < 4; i++) { |
| 149 | off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2; |
| 150 | rates->mcs_20_cdd[4 + i] = maxpwr - off; |
| 151 | if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
| 152 | rates->mcs_20_cdd[4 + i] -= extra_cdd_po; |
| 153 | } |
| 154 | |
| 155 | /* OFDM 20 CDD */ |
| 156 | rates->ofdm_20_cdd[0] = rates->mcs_20_cdd[0]; |
| 157 | rates->ofdm_20_cdd[1] = rates->mcs_20_cdd[0]; |
| 158 | rates->ofdm_20_cdd[2] = rates->mcs_20_cdd[1]; |
| 159 | rates->ofdm_20_cdd[3] = rates->mcs_20_cdd[2]; |
| 160 | rates->ofdm_20_cdd[4] = rates->mcs_20_cdd[3]; |
| 161 | rates->ofdm_20_cdd[5] = rates->mcs_20_cdd[4]; |
| 162 | rates->ofdm_20_cdd[6] = rates->mcs_20_cdd[5]; |
| 163 | rates->ofdm_20_cdd[7] = rates->mcs_20_cdd[6]; |
| 164 | |
| 165 | /* MCS 20 STBC */ |
| 166 | for (i = 0; i < 4; i++) { |
| 167 | off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2; |
| 168 | rates->mcs_20_stbc[i] = maxpwr - off; |
| 169 | if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
| 170 | rates->mcs_20_stbc[i] -= extra_stbc_po; |
| 171 | } |
| 172 | for (i = 0; i < 4; i++) { |
| 173 | off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2; |
| 174 | rates->mcs_20_stbc[4 + i] = maxpwr - off; |
| 175 | if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
| 176 | rates->mcs_20_stbc[4 + i] -= extra_stbc_po; |
| 177 | } |
| 178 | |
| 179 | /* MCS 20 SDM */ |
| 180 | for (i = 0; i < 4; i++) { |
| 181 | off = ((sprom_mcs_po[2] >> (i * 4)) & 0xf) * 2; |
| 182 | rates->mcs_20_sdm[i] = maxpwr - off; |
| 183 | } |
| 184 | for (i = 0; i < 4; i++) { |
| 185 | off = ((sprom_mcs_po[3] >> (i * 4)) & 0xf) * 2; |
| 186 | rates->mcs_20_sdm[4 + i] = maxpwr - off; |
| 187 | } |
| 188 | |
| 189 | return true; |
| 190 | } |