| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * (c) Copyright 2002-2010, Ralink Technology, Inc. |
| * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> |
| * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> |
| * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl> |
| */ |
| |
| #include "mt76x0.h" |
| #include "eeprom.h" |
| #include "mcu.h" |
| #include "initvals.h" |
| #include "initvals_init.h" |
| #include "../mt76x02_phy.h" |
| |
| 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; |
| |
| ret = mt76x02_init_device(dev); |
| if (ret) |
| return ret; |
| |
| 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->mphy.cap.has_5ghz) { |
| struct ieee80211_supported_band *sband; |
| |
| sband = &dev->mphy.sband_5g.sband; |
| sband->vht_cap.cap &= ~IEEE80211_VHT_CAP_RXLDPC; |
| mt76x0_init_txpower(dev, sband); |
| } |
| |
| if (dev->mphy.cap.has_2ghz) |
| mt76x0_init_txpower(dev, &dev->mphy.sband_2g.sband); |
| |
| mt76x02_init_debugfs(dev); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(mt76x0_register_device); |
