Commit | Line | Data |
---|---|---|
ec76643b RM |
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 | ||
26 | void 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 | ||
34 | void 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 | ||
44 | void 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 | ||
54 | void 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 | ||
64 | u8 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 | ||
77 | bool 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 | } |