diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/testmode.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/testmode.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/testmode.c b/drivers/net/wireless/mediatek/mt76/mt7615/testmode.c new file mode 100644 index 000000000000..1730751133aa --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7615/testmode.c @@ -0,0 +1,363 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */ + +#include "mt7615.h" +#include "eeprom.h" +#include "mcu.h" + +enum { + TM_CHANGED_TXPOWER_CTRL, + TM_CHANGED_TXPOWER, + TM_CHANGED_FREQ_OFFSET, + + /* must be last */ + NUM_TM_CHANGED +}; + + +static const u8 tm_change_map[] = { + [TM_CHANGED_TXPOWER_CTRL] = MT76_TM_ATTR_TX_POWER_CONTROL, + [TM_CHANGED_TXPOWER] = MT76_TM_ATTR_TX_POWER, + [TM_CHANGED_FREQ_OFFSET] = MT76_TM_ATTR_FREQ_OFFSET, +}; + +static const u32 reg_backup_list[] = { + MT_WF_PHY_RFINTF3_0(0), + MT_WF_PHY_RFINTF3_0(1), + MT_WF_PHY_RFINTF3_0(2), + MT_WF_PHY_RFINTF3_0(3), + MT_ANT_SWITCH_CON(2), + MT_ANT_SWITCH_CON(3), + MT_ANT_SWITCH_CON(4), + MT_ANT_SWITCH_CON(6), + MT_ANT_SWITCH_CON(7), + MT_ANT_SWITCH_CON(8), +}; + +static const struct { + u16 wf; + u16 reg; +} rf_backup_list[] = { + { 0, 0x48 }, + { 1, 0x48 }, + { 2, 0x48 }, + { 3, 0x48 }, +}; + +static int +mt7615_tm_set_tx_power(struct mt7615_phy *phy) +{ + struct mt7615_dev *dev = phy->dev; + struct mt76_phy *mphy = phy->mt76; + int i, ret, n_chains = hweight8(mphy->antenna_mask); + struct cfg80211_chan_def *chandef = &mphy->chandef; + int freq = chandef->center_freq1, len, target_chains; + u8 *data, *eep = (u8 *)dev->mt76.eeprom.data; + enum nl80211_band band = chandef->chan->band; + struct sk_buff *skb; + struct { + u8 center_chan; + u8 dbdc_idx; + u8 band; + u8 rsv; + } __packed req_hdr = { + .center_chan = ieee80211_frequency_to_channel(freq), + .band = band, + .dbdc_idx = phy != &dev->phy, + }; + u8 *tx_power = NULL; + + if (dev->mt76.test.state != MT76_TM_STATE_OFF) + tx_power = dev->mt76.test.tx_power; + + len = sizeof(req_hdr) + MT7615_EE_MAX - MT_EE_NIC_CONF_0; + skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(req_hdr) + len); + if (!skb) + return -ENOMEM; + + skb_put_data(skb, &req_hdr, sizeof(req_hdr)); + data = skb_put_data(skb, eep + MT_EE_NIC_CONF_0, len); + + target_chains = mt7615_ext_pa_enabled(dev, band) ? 1 : n_chains; + for (i = 0; i < target_chains; i++) { + int index; + + ret = mt7615_eeprom_get_target_power_index(dev, chandef->chan, i); + if (ret < 0) + return -EINVAL; + + index = ret - MT_EE_NIC_CONF_0; + if (tx_power && tx_power[i]) + data[ret - MT_EE_NIC_CONF_0] = tx_power[i]; + } + + return __mt76_mcu_skb_send_msg(&dev->mt76, skb, + MCU_EXT_CMD_SET_TX_POWER_CTRL, false); +} + +static void +mt7615_tm_reg_backup_restore(struct mt7615_dev *dev) +{ + u32 *b = dev->test.reg_backup; + int n_regs = ARRAY_SIZE(reg_backup_list); + int n_rf_regs = ARRAY_SIZE(rf_backup_list); + int i; + + if (dev->mt76.test.state == MT76_TM_STATE_OFF) { + for (i = 0; i < n_regs; i++) + mt76_wr(dev, reg_backup_list[i], b[i]); + + for (i = 0; i < n_rf_regs; i++) + mt7615_rf_wr(dev, rf_backup_list[i].wf, + rf_backup_list[i].reg, b[n_regs + i]); + return; + } + + if (b) + return; + + b = devm_kzalloc(dev->mt76.dev, 4 * (n_regs + n_rf_regs), + GFP_KERNEL); + if (!b) + return; + + dev->test.reg_backup = b; + for (i = 0; i < n_regs; i++) + b[i] = mt76_rr(dev, reg_backup_list[i]); + for (i = 0; i < n_rf_regs; i++) + b[n_regs + i] = mt7615_rf_rr(dev, rf_backup_list[i].wf, + rf_backup_list[i].reg); +} + + +static void +mt7615_tm_init_phy(struct mt7615_dev *dev, struct mt7615_phy *phy) +{ + unsigned int total_flags = ~0; + + if (!test_bit(MT76_STATE_RUNNING, &phy->mt76->state)) + return; + + mutex_unlock(&dev->mt76.mutex); + mt7615_set_channel(phy); + mt7615_ops.configure_filter(phy->mt76->hw, 0, &total_flags, 0); + mutex_lock(&dev->mt76.mutex); + + mt7615_tm_reg_backup_restore(dev); +} + +static void +mt7615_tm_init(struct mt7615_dev *dev) +{ + mt7615_tm_init_phy(dev, &dev->phy); + + if (dev->mt76.phy2) + mt7615_tm_init_phy(dev, dev->mt76.phy2->priv); +} + +static void +mt7615_tm_set_rx_enable(struct mt7615_dev *dev, bool en) +{ + u32 rqcr_mask = (MT_ARB_RQCR_RX_START | + MT_ARB_RQCR_RXV_START | + MT_ARB_RQCR_RXV_R_EN | + MT_ARB_RQCR_RXV_T_EN) * + (BIT(0) | BIT(MT_ARB_RQCR_BAND_SHIFT)); + + if (en) { + mt76_clear(dev, MT_ARB_SCR, + MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE); + mt76_set(dev, MT_ARB_RQCR, rqcr_mask); + } else { + mt76_set(dev, MT_ARB_SCR, + MT_ARB_SCR_RX0_DISABLE | MT_ARB_SCR_RX1_DISABLE); + mt76_clear(dev, MT_ARB_RQCR, rqcr_mask); + } +} + +static void +mt7615_tm_set_tx_antenna(struct mt7615_dev *dev, bool en) +{ + struct mt76_testmode_data *td = &dev->mt76.test; + u8 mask = td->tx_antenna_mask; + int i; + + if (!mask) + return; + + if (!en) + mask = dev->phy.chainmask; + + for (i = 0; i < 4; i++) { + mt76_rmw_field(dev, MT_WF_PHY_RFINTF3_0(i), + MT_WF_PHY_RFINTF3_0_ANT, + td->tx_antenna_mask & BIT(i) ? 0 : 0xa); + + } + + /* 2.4 GHz band */ + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(3), MT_ANT_SWITCH_CON_MODE(0), + (td->tx_antenna_mask & BIT(0)) ? 0x8 : 0x1b); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(2), + (td->tx_antenna_mask & BIT(1)) ? 0xe : 0x1b); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(6), MT_ANT_SWITCH_CON_MODE1(0), + (td->tx_antenna_mask & BIT(2)) ? 0x0 : 0xf); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(2), + (td->tx_antenna_mask & BIT(3)) ? 0x6 : 0xf); + + /* 5 GHz band */ + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(4), MT_ANT_SWITCH_CON_MODE(1), + (td->tx_antenna_mask & BIT(0)) ? 0xd : 0x1b); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(2), MT_ANT_SWITCH_CON_MODE(3), + (td->tx_antenna_mask & BIT(1)) ? 0x13 : 0x1b); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(7), MT_ANT_SWITCH_CON_MODE1(1), + (td->tx_antenna_mask & BIT(2)) ? 0x5 : 0xf); + mt76_rmw_field(dev, MT_ANT_SWITCH_CON(8), MT_ANT_SWITCH_CON_MODE1(3), + (td->tx_antenna_mask & BIT(3)) ? 0xb : 0xf); + + for (i = 0; i < 4; i++) { + u32 val; + + val = mt7615_rf_rr(dev, i, 0x48); + val &= ~(0x3ff << 20); + if (td->tx_antenna_mask & BIT(i)) + val |= 3 << 20; + else + val |= (2 << 28) | (2 << 26) | (8 << 20); + mt7615_rf_wr(dev, i, 0x48, val); + } +} + +static void +mt7615_tm_set_tx_frames(struct mt7615_dev *dev, bool en) +{ + struct ieee80211_tx_info *info; + struct sk_buff *skb = dev->mt76.test.tx_skb; + + mt7615_mcu_set_chan_info(&dev->phy, MCU_EXT_CMD_SET_RX_PATH); + mt7615_tm_set_tx_antenna(dev, en); + mt7615_tm_set_rx_enable(dev, !en); + if (!en || !skb) + return; + + info = IEEE80211_SKB_CB(skb); + info->control.vif = dev->phy.monitor_vif; +} + +static void +mt7615_tm_update_params(struct mt7615_dev *dev, u32 changed) +{ + struct mt76_testmode_data *td = &dev->mt76.test; + bool en = dev->mt76.test.state != MT76_TM_STATE_OFF; + + if (changed & BIT(TM_CHANGED_TXPOWER_CTRL)) + mt7615_mcu_set_test_param(dev, MCU_ATE_SET_TX_POWER_CONTROL, + en, en && td->tx_power_control); + if (changed & BIT(TM_CHANGED_FREQ_OFFSET)) + mt7615_mcu_set_test_param(dev, MCU_ATE_SET_FREQ_OFFSET, + en, en ? td->freq_offset : 0); + if (changed & BIT(TM_CHANGED_TXPOWER)) + mt7615_tm_set_tx_power(&dev->phy); +} + +static int +mt7615_tm_set_state(struct mt76_dev *mdev, enum mt76_testmode_state state) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + struct mt76_testmode_data *td = &mdev->test; + enum mt76_testmode_state prev_state = td->state; + + mdev->test.state = state; + + if (prev_state == MT76_TM_STATE_TX_FRAMES) + mt7615_tm_set_tx_frames(dev, false); + else if (state == MT76_TM_STATE_TX_FRAMES) + mt7615_tm_set_tx_frames(dev, true); + + if (state <= MT76_TM_STATE_IDLE) + mt7615_tm_init(dev); + + if ((state == MT76_TM_STATE_IDLE && + prev_state == MT76_TM_STATE_OFF) || + (state == MT76_TM_STATE_OFF && + prev_state == MT76_TM_STATE_IDLE)) { + u32 changed = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) { + u16 cur = tm_change_map[i]; + + if (td->param_set[cur / 32] & BIT(cur % 32)) + changed |= BIT(i); + } + + mt7615_tm_update_params(dev, changed); + } + + return 0; +} + +static int +mt7615_tm_set_params(struct mt76_dev *mdev, struct nlattr **tb, + enum mt76_testmode_state new_state) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + struct mt76_testmode_data *td = &dev->mt76.test; + u32 changed = 0; + int i; + + BUILD_BUG_ON(NUM_TM_CHANGED >= 32); + + if (new_state == MT76_TM_STATE_OFF || + td->state == MT76_TM_STATE_OFF) + return 0; + + if (td->tx_antenna_mask & ~dev->phy.chainmask) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(tm_change_map); i++) { + if (tb[tm_change_map[i]]) + changed |= BIT(i); + } + + mt7615_tm_update_params(dev, changed); + + return 0; +} + +static int +mt7615_tm_dump_stats(struct mt76_dev *mdev, struct sk_buff *msg) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + void *rx, *rssi; + int i; + + rx = nla_nest_start(msg, MT76_TM_STATS_ATTR_LAST_RX); + if (!rx) + return -ENOMEM; + + if (nla_put_s32(msg, MT76_TM_RX_ATTR_FREQ_OFFSET, dev->test.last_freq_offset) || + nla_put_s32(msg, MT76_TM_RX_ATTR_IB_RSSI, dev->test.last_ib_rssi) || + nla_put_s32(msg, MT76_TM_RX_ATTR_WB_RSSI, dev->test.last_wb_rssi)) + return -ENOMEM; + + rssi = nla_nest_start(msg, MT76_TM_RX_ATTR_RCPI); + if (!rssi) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(dev->test.last_rcpi); i++) + if (nla_put_u8(msg, i, dev->test.last_rcpi[i])) + return -ENOMEM; + + nla_nest_end(msg, rssi); + + nla_nest_end(msg, rx); + + return 0; +} + +const struct mt76_testmode_ops mt7615_testmode_ops = { + .set_state = mt7615_tm_set_state, + .set_params = mt7615_tm_set_params, + .dump_stats = mt7615_tm_dump_stats, +}; |