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190 lines
4.8 KiB
190 lines
4.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Broadcom B43 wireless driver |
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* PPR (Power Per Rate) management |
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* |
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* Copyright (c) 2014 Rafał Miłecki <[email protected]> |
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*/ |
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#include "ppr.h" |
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#include "b43.h" |
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#define ppr_for_each_entry(ppr, i, entry) \ |
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for (i = 0, entry = &(ppr)->__all_rates[i]; \ |
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i < B43_PPR_RATES_NUM; \ |
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i++, entry++) |
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void b43_ppr_clear(struct b43_wldev *dev, struct b43_ppr *ppr) |
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{ |
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memset(ppr, 0, sizeof(*ppr)); |
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/* Compile-time PPR check */ |
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BUILD_BUG_ON(sizeof(struct b43_ppr) != B43_PPR_RATES_NUM * sizeof(u8)); |
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} |
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void b43_ppr_add(struct b43_wldev *dev, struct b43_ppr *ppr, int diff) |
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{ |
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int i; |
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u8 *rate; |
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ppr_for_each_entry(ppr, i, rate) { |
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*rate = clamp_val(*rate + diff, 0, 127); |
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} |
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} |
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void b43_ppr_apply_max(struct b43_wldev *dev, struct b43_ppr *ppr, u8 max) |
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{ |
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int i; |
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u8 *rate; |
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ppr_for_each_entry(ppr, i, rate) { |
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*rate = min(*rate, max); |
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} |
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} |
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void b43_ppr_apply_min(struct b43_wldev *dev, struct b43_ppr *ppr, u8 min) |
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{ |
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int i; |
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u8 *rate; |
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ppr_for_each_entry(ppr, i, rate) { |
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*rate = max(*rate, min); |
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} |
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} |
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u8 b43_ppr_get_max(struct b43_wldev *dev, struct b43_ppr *ppr) |
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{ |
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u8 res = 0; |
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int i; |
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u8 *rate; |
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ppr_for_each_entry(ppr, i, rate) { |
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res = max(*rate, res); |
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} |
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return res; |
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} |
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bool b43_ppr_load_max_from_sprom(struct b43_wldev *dev, struct b43_ppr *ppr, |
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enum b43_band band) |
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{ |
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struct b43_ppr_rates *rates = &ppr->rates; |
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struct ssb_sprom *sprom = dev->dev->bus_sprom; |
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struct b43_phy *phy = &dev->phy; |
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u8 maxpwr, off; |
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u32 sprom_ofdm_po; |
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u16 *sprom_mcs_po; |
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u8 extra_cdd_po, extra_stbc_po; |
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int i; |
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switch (band) { |
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case B43_BAND_2G: |
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maxpwr = min(sprom->core_pwr_info[0].maxpwr_2g, |
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sprom->core_pwr_info[1].maxpwr_2g); |
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sprom_ofdm_po = sprom->ofdm2gpo; |
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sprom_mcs_po = sprom->mcs2gpo; |
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extra_cdd_po = (sprom->cddpo >> 0) & 0xf; |
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extra_stbc_po = (sprom->stbcpo >> 0) & 0xf; |
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break; |
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case B43_BAND_5G_LO: |
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maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gl, |
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sprom->core_pwr_info[1].maxpwr_5gl); |
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sprom_ofdm_po = sprom->ofdm5glpo; |
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sprom_mcs_po = sprom->mcs5glpo; |
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extra_cdd_po = (sprom->cddpo >> 8) & 0xf; |
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extra_stbc_po = (sprom->stbcpo >> 8) & 0xf; |
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break; |
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case B43_BAND_5G_MI: |
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maxpwr = min(sprom->core_pwr_info[0].maxpwr_5g, |
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sprom->core_pwr_info[1].maxpwr_5g); |
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sprom_ofdm_po = sprom->ofdm5gpo; |
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sprom_mcs_po = sprom->mcs5gpo; |
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extra_cdd_po = (sprom->cddpo >> 4) & 0xf; |
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extra_stbc_po = (sprom->stbcpo >> 4) & 0xf; |
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break; |
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case B43_BAND_5G_HI: |
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maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gh, |
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sprom->core_pwr_info[1].maxpwr_5gh); |
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sprom_ofdm_po = sprom->ofdm5ghpo; |
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sprom_mcs_po = sprom->mcs5ghpo; |
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extra_cdd_po = (sprom->cddpo >> 12) & 0xf; |
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extra_stbc_po = (sprom->stbcpo >> 12) & 0xf; |
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break; |
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default: |
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WARN_ON_ONCE(1); |
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return false; |
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} |
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if (band == B43_BAND_2G) { |
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for (i = 0; i < 4; i++) { |
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off = ((sprom->cck2gpo >> (i * 4)) & 0xf) * 2; |
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rates->cck[i] = maxpwr - off; |
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} |
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} |
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/* OFDM */ |
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for (i = 0; i < 8; i++) { |
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off = ((sprom_ofdm_po >> (i * 4)) & 0xf) * 2; |
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rates->ofdm[i] = maxpwr - off; |
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} |
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/* MCS 20 SISO */ |
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rates->mcs_20[0] = rates->ofdm[0]; |
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rates->mcs_20[1] = rates->ofdm[2]; |
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rates->mcs_20[2] = rates->ofdm[3]; |
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rates->mcs_20[3] = rates->ofdm[4]; |
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rates->mcs_20[4] = rates->ofdm[5]; |
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rates->mcs_20[5] = rates->ofdm[6]; |
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rates->mcs_20[6] = rates->ofdm[7]; |
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rates->mcs_20[7] = rates->ofdm[7]; |
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/* MCS 20 CDD */ |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_cdd[i] = maxpwr - off; |
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if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
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rates->mcs_20_cdd[i] -= extra_cdd_po; |
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} |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_cdd[4 + i] = maxpwr - off; |
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if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
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rates->mcs_20_cdd[4 + i] -= extra_cdd_po; |
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} |
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/* OFDM 20 CDD */ |
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rates->ofdm_20_cdd[0] = rates->mcs_20_cdd[0]; |
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rates->ofdm_20_cdd[1] = rates->mcs_20_cdd[0]; |
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rates->ofdm_20_cdd[2] = rates->mcs_20_cdd[1]; |
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rates->ofdm_20_cdd[3] = rates->mcs_20_cdd[2]; |
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rates->ofdm_20_cdd[4] = rates->mcs_20_cdd[3]; |
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rates->ofdm_20_cdd[5] = rates->mcs_20_cdd[4]; |
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rates->ofdm_20_cdd[6] = rates->mcs_20_cdd[5]; |
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rates->ofdm_20_cdd[7] = rates->mcs_20_cdd[6]; |
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/* MCS 20 STBC */ |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_stbc[i] = maxpwr - off; |
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if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
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rates->mcs_20_stbc[i] -= extra_stbc_po; |
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} |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_stbc[4 + i] = maxpwr - off; |
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if (phy->type == B43_PHYTYPE_N && phy->rev >= 3) |
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rates->mcs_20_stbc[4 + i] -= extra_stbc_po; |
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} |
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/* MCS 20 SDM */ |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[2] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_sdm[i] = maxpwr - off; |
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} |
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for (i = 0; i < 4; i++) { |
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off = ((sprom_mcs_po[3] >> (i * 4)) & 0xf) * 2; |
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rates->mcs_20_sdm[4 + i] = maxpwr - off; |
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} |
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return true; |
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}
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