/* * (c) Copyright 2002-2010, Ralink Technology, Inc. * Copyright (C) 2014 Felix Fietkau * Copyright (C) 2015 Jakub Kicinski * Copyright (C) 2018 Stanislaw Gruszka * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include "mt76x0.h" #include "eeprom.h" #include "mcu.h" #include "initvals.h" #include "../mt76x02_phy.h" static void mt76x0_vht_cap_mask(struct ieee80211_supported_band *sband) { struct ieee80211_sta_vht_cap *vht_cap = &sband->vht_cap; u16 mcs_map = 0; int i; vht_cap->cap &= ~IEEE80211_VHT_CAP_RXLDPC; for (i = 0; i < 8; i++) { if (!i) mcs_map |= (IEEE80211_VHT_MCS_SUPPORT_0_7 << (i * 2)); else mcs_map |= (IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2)); } vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); } static void mt76x0_set_wlan_state(struct mt76x02_dev *dev, u32 val, bool enable) { u32 mask = MT_CMB_CTRL_XTAL_RDY | MT_CMB_CTRL_PLL_LD; /* Note: we don't turn off WLAN_CLK because that makes the device * not respond properly on the probe path. * In case anyone (PSM?) wants to use this function we can * bring the clock stuff back and fixup the probe path. */ if (enable) val |= (MT_WLAN_FUN_CTRL_WLAN_EN | MT_WLAN_FUN_CTRL_WLAN_CLK_EN); else val &= ~(MT_WLAN_FUN_CTRL_WLAN_EN); mt76_wr(dev, MT_WLAN_FUN_CTRL, val); udelay(20); /* Note: vendor driver tries to disable/enable wlan here and retry * but the code which does it is so buggy it must have never * triggered, so don't bother. */ if (enable && !mt76_poll(dev, MT_CMB_CTRL, mask, mask, 2000)) dev_err(dev->mt76.dev, "PLL and XTAL check failed\n"); } void mt76x0_chip_onoff(struct mt76x02_dev *dev, bool enable, bool reset) { u32 val; val = mt76_rr(dev, MT_WLAN_FUN_CTRL); if (reset) { val |= MT_WLAN_FUN_CTRL_GPIO_OUT_EN; val &= ~MT_WLAN_FUN_CTRL_FRC_WL_ANT_SEL; if (val & MT_WLAN_FUN_CTRL_WLAN_EN) { val |= (MT_WLAN_FUN_CTRL_WLAN_RESET | MT_WLAN_FUN_CTRL_WLAN_RESET_RF); mt76_wr(dev, MT_WLAN_FUN_CTRL, val); udelay(20); val &= ~(MT_WLAN_FUN_CTRL_WLAN_RESET | MT_WLAN_FUN_CTRL_WLAN_RESET_RF); } } mt76_wr(dev, MT_WLAN_FUN_CTRL, val); udelay(20); mt76x0_set_wlan_state(dev, val, enable); } EXPORT_SYMBOL_GPL(mt76x0_chip_onoff); static void mt76x0_reset_csr_bbp(struct mt76x02_dev *dev) { mt76_wr(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_RESET_CSR | MT_MAC_SYS_CTRL_RESET_BBP); msleep(200); mt76_clear(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_RESET_CSR | MT_MAC_SYS_CTRL_RESET_BBP); } #define RANDOM_WRITE(dev, tab) \ mt76_wr_rp(dev, MT_MCU_MEMMAP_WLAN, \ tab, ARRAY_SIZE(tab)) static int mt76x0_init_bbp(struct mt76x02_dev *dev) { int ret, i; ret = mt76x0_phy_wait_bbp_ready(dev); if (ret) return ret; RANDOM_WRITE(dev, mt76x0_bbp_init_tab); for (i = 0; i < ARRAY_SIZE(mt76x0_bbp_switch_tab); i++) { const struct mt76x0_bbp_switch_item *item = &mt76x0_bbp_switch_tab[i]; const struct mt76_reg_pair *pair = &item->reg_pair; if (((RF_G_BAND | RF_BW_20) & item->bw_band) == (RF_G_BAND | RF_BW_20)) mt76_wr(dev, pair->reg, pair->value); } RANDOM_WRITE(dev, mt76x0_dcoc_tab); return 0; } static void mt76x0_init_mac_registers(struct mt76x02_dev *dev) { RANDOM_WRITE(dev, common_mac_reg_table); /* Enable PBF and MAC clock SYS_CTRL[11:10] = 0x3 */ RANDOM_WRITE(dev, mt76x0_mac_reg_table); /* Release BBP and MAC reset MAC_SYS_CTRL[1:0] = 0x0 */ mt76_clear(dev, MT_MAC_SYS_CTRL, 0x3); /* Set 0x141C[15:12]=0xF */ mt76_set(dev, MT_EXT_CCA_CFG, 0xf000); mt76_clear(dev, MT_FCE_L2_STUFF, MT_FCE_L2_STUFF_WR_MPDU_LEN_EN); /* * tx_ring 9 is for mgmt frame * tx_ring 8 is for in-band command frame. * WMM_RG0_TXQMA: this register setting is for FCE to * define the rule of tx_ring 9 * WMM_RG1_TXQMA: this register setting is for FCE to * define the rule of tx_ring 8 */ mt76_rmw(dev, MT_WMM_CTRL, 0x3ff, 0x201); } void mt76x0_mac_stop(struct mt76x02_dev *dev) { int i = 200, ok = 0; mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN); /* Page count on TxQ */ while (i-- && ((mt76_rr(dev, 0x0438) & 0xffffffff) || (mt76_rr(dev, 0x0a30) & 0x000000ff) || (mt76_rr(dev, 0x0a34) & 0x00ff00ff))) msleep(10); if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_TX, 0, 1000)) dev_warn(dev->mt76.dev, "Warning: MAC TX did not stop!\n"); mt76_clear(dev, MT_MAC_SYS_CTRL, MT_MAC_SYS_CTRL_ENABLE_RX | MT_MAC_SYS_CTRL_ENABLE_TX); /* Page count on RxQ */ for (i = 0; i < 200; i++) { if (!(mt76_rr(dev, MT_RXQ_STA) & 0x00ff0000) && !mt76_rr(dev, 0x0a30) && !mt76_rr(dev, 0x0a34)) { if (ok++ > 5) break; continue; } msleep(1); } if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_RX, 0, 1000)) dev_warn(dev->mt76.dev, "Warning: MAC RX did not stop!\n"); } EXPORT_SYMBOL_GPL(mt76x0_mac_stop); int mt76x0_init_hardware(struct mt76x02_dev *dev) { int ret, i, k; if (!mt76x02_wait_for_wpdma(&dev->mt76, 1000)) return -EIO; /* Wait for ASIC ready after FW load. */ if (!mt76x02_wait_for_mac(&dev->mt76)) return -ETIMEDOUT; mt76x0_reset_csr_bbp(dev); ret = mt76x02_mcu_function_select(dev, Q_SELECT, 1); if (ret) return ret; mt76x0_init_mac_registers(dev); if (!mt76x02_wait_for_txrx_idle(&dev->mt76)) return -EIO; ret = mt76x0_init_bbp(dev); if (ret) return ret; dev->mt76.rxfilter = mt76_rr(dev, MT_RX_FILTR_CFG); for (i = 0; i < 16; i++) for (k = 0; k < 4; k++) mt76x02_mac_shared_key_setup(dev, i, k, NULL); for (i = 0; i < 256; i++) mt76x02_mac_wcid_setup(dev, i, 0, NULL); ret = mt76x0_eeprom_init(dev); if (ret) return ret; mt76x0_phy_init(dev); return 0; } EXPORT_SYMBOL_GPL(mt76x0_init_hardware); static void mt76x0_init_txpower(struct mt76x02_dev *dev, struct ieee80211_supported_band *sband) { struct ieee80211_channel *chan; struct mt76_rate_power t; s8 tp; int i; for (i = 0; i < sband->n_channels; i++) { chan = &sband->channels[i]; mt76x0_get_tx_power_per_rate(dev, chan, &t); mt76x0_get_power_info(dev, chan, &tp); chan->orig_mpwr = (mt76x02_get_max_rate_power(&t) + tp) / 2; chan->max_power = min_t(int, chan->max_reg_power, chan->orig_mpwr); } } int mt76x0_register_device(struct mt76x02_dev *dev) { int ret; mt76x02_init_device(dev); mt76x02_config_mac_addr_list(dev); ret = mt76_register_device(&dev->mt76, true, mt76x02_rates, ARRAY_SIZE(mt76x02_rates)); if (ret) return ret; if (dev->mt76.cap.has_5ghz) { /* overwrite unsupported features */ mt76x0_vht_cap_mask(&dev->mt76.sband_5g.sband); mt76x0_init_txpower(dev, &dev->mt76.sband_5g.sband); } if (dev->mt76.cap.has_2ghz) mt76x0_init_txpower(dev, &dev->mt76.sband_2g.sband); mt76x02_init_debugfs(dev); return 0; } EXPORT_SYMBOL_GPL(mt76x0_register_device);