/* * Centralized txant update function. call it whenever wlc->stf->txant and/or * wlc->stf->txchain change. * * Antennas are controlled by ucode indirectly, which drives PHY or GPIO to * achieve various tx/rx antenna selection schemes * * legacy phy, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 * means auto(last rx). * for NREV<3, bit 6 and bit 7 means antenna 0 and 1 respectively, bit6+bit7 * means last rx and do tx-antenna selection for SISO transmissions * for NREV=3, bit 6 and bit _8_ means antenna 0 and 1 respectively, bit6+bit7 * means last rx and do tx-antenna selection for SISO transmissions * for NREV>=7, bit 6 and bit 7 mean antenna 0 and 1 respectively, nit6+bit7 * means both cores active */ static void _brcms_c_stf_phy_txant_upd(struct brcms_c_info *wlc) { s8 txant; txant = (s8) wlc->stf->txant; if (BRCMS_PHY_11N_CAP(wlc->band)) { if (txant == ANT_TX_FORCE_0) { wlc->stf->phytxant = PHY_TXC_ANT_0; } else if (txant == ANT_TX_FORCE_1) { wlc->stf->phytxant = PHY_TXC_ANT_1; if (BRCMS_ISNPHY(wlc->band) && NREV_GE(wlc->band->phyrev, 3) && NREV_LT(wlc->band->phyrev, 7)) wlc->stf->phytxant = PHY_TXC_ANT_2; } else { if (BRCMS_ISLCNPHY(wlc->band) || BRCMS_ISSSLPNPHY(wlc->band)) wlc->stf->phytxant = PHY_TXC_LCNPHY_ANT_LAST; else { /* catch out of sync wlc->stf->txcore */ WARN_ON(wlc->stf->txchain <= 0); wlc->stf->phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT; } } } else { if (txant == ANT_TX_FORCE_0) wlc->stf->phytxant = PHY_TXC_OLD_ANT_0; else if (txant == ANT_TX_FORCE_1) wlc->stf->phytxant = PHY_TXC_OLD_ANT_1; else wlc->stf->phytxant = PHY_TXC_OLD_ANT_LAST; } brcms_b_txant_set(wlc->hw, wlc->stf->phytxant); }
/* * Validate the chanspec for this locale, for 40MHZ we need to also * check that the sidebands are valid 20MZH channels in this locale * and they are also a legal HT combination */ static bool brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec, bool dualband) { struct brcms_c_info *wlc = wlc_cm->wlc; u8 channel = CHSPEC_CHANNEL(chspec); /* check the chanspec */ if (brcms_c_chspec_malformed(chspec)) { wiphy_err(wlc->wiphy, "wl%d: malformed chanspec 0x%x\n", wlc->pub->unit, chspec); return false; } if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) != chspec_bandunit(chspec)) return false; /* Check a 20Mhz channel */ if (CHSPEC_IS20(chspec)) { if (dualband) return brcms_c_valid_channel20_db(wlc_cm->wlc->cmi, channel); else return brcms_c_valid_channel20(wlc_cm->wlc->cmi, channel); } #ifdef SUPPORT_40MHZ /* * We know we are now checking a 40MHZ channel, so we should * only be here for NPHYS */ if (BRCMS_ISNPHY(wlc->band) || BRCMS_ISSSLPNPHY(wlc->band)) { u8 upper_sideband = 0, idx; u8 num_ch20_entries = sizeof(chan20_info) / sizeof(struct chan20_info); if (!VALID_40CHANSPEC_IN_BAND(wlc, chspec_bandunit(chspec))) return false; if (dualband) { if (!brcms_c_valid_channel20_db(wlc->cmi, lower_20_sb(channel)) || !brcms_c_valid_channel20_db(wlc->cmi, upper_20_sb(channel))) return false; } else { if (!brcms_c_valid_channel20(wlc->cmi, lower_20_sb(channel)) || !brcms_c_valid_channel20(wlc->cmi, upper_20_sb(channel))) return false; } /* find the lower sideband info in the sideband array */ for (idx = 0; idx < num_ch20_entries; idx++) { if (chan20_info[idx].sb == lower_20_sb(channel)) upper_sideband = chan20_info[idx].adj_sbs; } /* check that the lower sideband allows an upper sideband */ if ((upper_sideband & (CH_UPPER_SB | CH_EWA_VALID)) == (CH_UPPER_SB | CH_EWA_VALID)) return true; return false; } #endif /* 40 MHZ */ return false; }