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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Broadcom B43 wireless driver
4 * PPR (Power Per Rate) management
5 *
6 * Copyright (c) 2014 Rafał Miłecki <zajec5@gmail.com>
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
17void 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
25void 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
35void 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
45void 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
55u8 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
68bool 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}
1/*
2 * Broadcom B43 wireless driver
3 * PPR (Power Per Rate) management
4 *
5 * Copyright (c) 2014 Rafał Miłecki <zajec5@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18#include "ppr.h"
19#include "b43.h"
20
21#define ppr_for_each_entry(ppr, i, entry) \
22 for (i = 0, entry = &(ppr)->__all_rates[i]; \
23 i < B43_PPR_RATES_NUM; \
24 i++, entry++)
25
26void b43_ppr_clear(struct b43_wldev *dev, struct b43_ppr *ppr)
27{
28 memset(ppr, 0, sizeof(*ppr));
29
30 /* Compile-time PPR check */
31 BUILD_BUG_ON(sizeof(struct b43_ppr) != B43_PPR_RATES_NUM * sizeof(u8));
32}
33
34void b43_ppr_add(struct b43_wldev *dev, struct b43_ppr *ppr, int diff)
35{
36 int i;
37 u8 *rate;
38
39 ppr_for_each_entry(ppr, i, rate) {
40 *rate = clamp_val(*rate + diff, 0, 127);
41 }
42}
43
44void b43_ppr_apply_max(struct b43_wldev *dev, struct b43_ppr *ppr, u8 max)
45{
46 int i;
47 u8 *rate;
48
49 ppr_for_each_entry(ppr, i, rate) {
50 *rate = min(*rate, max);
51 }
52}
53
54void b43_ppr_apply_min(struct b43_wldev *dev, struct b43_ppr *ppr, u8 min)
55{
56 int i;
57 u8 *rate;
58
59 ppr_for_each_entry(ppr, i, rate) {
60 *rate = max(*rate, min);
61 }
62}
63
64u8 b43_ppr_get_max(struct b43_wldev *dev, struct b43_ppr *ppr)
65{
66 u8 res = 0;
67 int i;
68 u8 *rate;
69
70 ppr_for_each_entry(ppr, i, rate) {
71 res = max(*rate, res);
72 }
73
74 return res;
75}
76
77bool b43_ppr_load_max_from_sprom(struct b43_wldev *dev, struct b43_ppr *ppr,
78 enum b43_band band)
79{
80 struct b43_ppr_rates *rates = &ppr->rates;
81 struct ssb_sprom *sprom = dev->dev->bus_sprom;
82 struct b43_phy *phy = &dev->phy;
83 u8 maxpwr, off;
84 u32 sprom_ofdm_po;
85 u16 *sprom_mcs_po;
86 u8 extra_cdd_po, extra_stbc_po;
87 int i;
88
89 switch (band) {
90 case B43_BAND_2G:
91 maxpwr = min(sprom->core_pwr_info[0].maxpwr_2g,
92 sprom->core_pwr_info[1].maxpwr_2g);
93 sprom_ofdm_po = sprom->ofdm2gpo;
94 sprom_mcs_po = sprom->mcs2gpo;
95 extra_cdd_po = (sprom->cddpo >> 0) & 0xf;
96 extra_stbc_po = (sprom->stbcpo >> 0) & 0xf;
97 break;
98 case B43_BAND_5G_LO:
99 maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gl,
100 sprom->core_pwr_info[1].maxpwr_5gl);
101 sprom_ofdm_po = sprom->ofdm5glpo;
102 sprom_mcs_po = sprom->mcs5glpo;
103 extra_cdd_po = (sprom->cddpo >> 8) & 0xf;
104 extra_stbc_po = (sprom->stbcpo >> 8) & 0xf;
105 break;
106 case B43_BAND_5G_MI:
107 maxpwr = min(sprom->core_pwr_info[0].maxpwr_5g,
108 sprom->core_pwr_info[1].maxpwr_5g);
109 sprom_ofdm_po = sprom->ofdm5gpo;
110 sprom_mcs_po = sprom->mcs5gpo;
111 extra_cdd_po = (sprom->cddpo >> 4) & 0xf;
112 extra_stbc_po = (sprom->stbcpo >> 4) & 0xf;
113 break;
114 case B43_BAND_5G_HI:
115 maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gh,
116 sprom->core_pwr_info[1].maxpwr_5gh);
117 sprom_ofdm_po = sprom->ofdm5ghpo;
118 sprom_mcs_po = sprom->mcs5ghpo;
119 extra_cdd_po = (sprom->cddpo >> 12) & 0xf;
120 extra_stbc_po = (sprom->stbcpo >> 12) & 0xf;
121 break;
122 default:
123 WARN_ON_ONCE(1);
124 return false;
125 }
126
127 if (band == B43_BAND_2G) {
128 for (i = 0; i < 4; i++) {
129 off = ((sprom->cck2gpo >> (i * 4)) & 0xf) * 2;
130 rates->cck[i] = maxpwr - off;
131 }
132 }
133
134 /* OFDM */
135 for (i = 0; i < 8; i++) {
136 off = ((sprom_ofdm_po >> (i * 4)) & 0xf) * 2;
137 rates->ofdm[i] = maxpwr - off;
138 }
139
140 /* MCS 20 SISO */
141 rates->mcs_20[0] = rates->ofdm[0];
142 rates->mcs_20[1] = rates->ofdm[2];
143 rates->mcs_20[2] = rates->ofdm[3];
144 rates->mcs_20[3] = rates->ofdm[4];
145 rates->mcs_20[4] = rates->ofdm[5];
146 rates->mcs_20[5] = rates->ofdm[6];
147 rates->mcs_20[6] = rates->ofdm[7];
148 rates->mcs_20[7] = rates->ofdm[7];
149
150 /* MCS 20 CDD */
151 for (i = 0; i < 4; i++) {
152 off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2;
153 rates->mcs_20_cdd[i] = maxpwr - off;
154 if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
155 rates->mcs_20_cdd[i] -= extra_cdd_po;
156 }
157 for (i = 0; i < 4; i++) {
158 off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2;
159 rates->mcs_20_cdd[4 + i] = maxpwr - off;
160 if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
161 rates->mcs_20_cdd[4 + i] -= extra_cdd_po;
162 }
163
164 /* OFDM 20 CDD */
165 rates->ofdm_20_cdd[0] = rates->mcs_20_cdd[0];
166 rates->ofdm_20_cdd[1] = rates->mcs_20_cdd[0];
167 rates->ofdm_20_cdd[2] = rates->mcs_20_cdd[1];
168 rates->ofdm_20_cdd[3] = rates->mcs_20_cdd[2];
169 rates->ofdm_20_cdd[4] = rates->mcs_20_cdd[3];
170 rates->ofdm_20_cdd[5] = rates->mcs_20_cdd[4];
171 rates->ofdm_20_cdd[6] = rates->mcs_20_cdd[5];
172 rates->ofdm_20_cdd[7] = rates->mcs_20_cdd[6];
173
174 /* MCS 20 STBC */
175 for (i = 0; i < 4; i++) {
176 off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2;
177 rates->mcs_20_stbc[i] = maxpwr - off;
178 if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
179 rates->mcs_20_stbc[i] -= extra_stbc_po;
180 }
181 for (i = 0; i < 4; i++) {
182 off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2;
183 rates->mcs_20_stbc[4 + i] = maxpwr - off;
184 if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
185 rates->mcs_20_stbc[4 + i] -= extra_stbc_po;
186 }
187
188 /* MCS 20 SDM */
189 for (i = 0; i < 4; i++) {
190 off = ((sprom_mcs_po[2] >> (i * 4)) & 0xf) * 2;
191 rates->mcs_20_sdm[i] = maxpwr - off;
192 }
193 for (i = 0; i < 4; i++) {
194 off = ((sprom_mcs_po[3] >> (i * 4)) & 0xf) * 2;
195 rates->mcs_20_sdm[4 + i] = maxpwr - off;
196 }
197
198 return true;
199}