diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c new file mode 100644 index 0000000000..fbb1181c58 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c @@ -0,0 +1,293 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2020 MediaTek Inc. + * + * Author: Ryder Lee <ryder.lee@mediatek.com> + * Roy Luo <royluo@google.com> + * Felix Fietkau <nbd@nbd.name> + * Lorenzo Bianconi <lorenzo@kernel.org> + */ + +#include <linux/etherdevice.h> +#include <linux/timekeeping.h> + +#include "mt7615.h" +#include "../dma.h" +#include "mac.h" + +static void +mt7615_write_fw_txp(struct mt7615_dev *dev, struct mt76_tx_info *tx_info, + void *txp_ptr, u32 id) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); + struct ieee80211_key_conf *key = info->control.hw_key; + struct ieee80211_vif *vif = info->control.vif; + struct mt76_connac_fw_txp *txp = txp_ptr; + u8 *rept_wds_wcid = (u8 *)&txp->rept_wds_wcid; + int nbuf = tx_info->nbuf - 1; + int i; + + for (i = 0; i < nbuf; i++) { + txp->buf[i] = cpu_to_le32(tx_info->buf[i + 1].addr); + txp->len[i] = cpu_to_le16(tx_info->buf[i + 1].len); + } + txp->nbuf = nbuf; + + /* pass partial skb header to fw */ + tx_info->buf[0].len = MT_TXD_SIZE + sizeof(*txp); + tx_info->buf[1].len = MT_CT_PARSE_LEN; + tx_info->buf[1].skip_unmap = true; + tx_info->nbuf = MT_CT_DMA_BUF_NUM; + + txp->flags = cpu_to_le16(MT_CT_INFO_APPLY_TXD); + + if (!key) + txp->flags |= cpu_to_le16(MT_CT_INFO_NONE_CIPHER_FRAME); + + if (ieee80211_is_mgmt(hdr->frame_control)) + txp->flags |= cpu_to_le16(MT_CT_INFO_MGMT_FRAME); + + if (vif) { + struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv; + + txp->bss_idx = mvif->idx; + } + + txp->token = cpu_to_le16(id); + *rept_wds_wcid = 0xff; +} + +int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, + enum mt76_txq_id qid, struct mt76_wcid *wcid, + struct ieee80211_sta *sta, + struct mt76_tx_info *tx_info) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb); + struct ieee80211_key_conf *key = info->control.hw_key; + int pid, id; + u8 *txwi = (u8 *)txwi_ptr; + struct mt76_txwi_cache *t; + struct mt7615_sta *msta; + void *txp; + + msta = wcid ? container_of(wcid, struct mt7615_sta, wcid) : NULL; + if (!wcid) + wcid = &dev->mt76.global_wcid; + + if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) && msta) { + struct mt7615_phy *phy = &dev->phy; + u8 phy_idx = (info->hw_queue & MT_TX_HW_QUEUE_PHY) >> 2; + + if (phy_idx && mdev->phys[MT_BAND1]) + phy = mdev->phys[MT_BAND1]->priv; + + spin_lock_bh(&dev->mt76.lock); + mt7615_mac_set_rates(phy, msta, &info->control.rates[0], + msta->rates); + spin_unlock_bh(&dev->mt76.lock); + } + + t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size); + t->skb = tx_info->skb; + + id = mt76_token_get(mdev, &t); + if (id < 0) + return id; + + pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb); + mt7615_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, sta, + pid, key, qid, false); + + txp = txwi + MT_TXD_SIZE; + memset(txp, 0, sizeof(struct mt76_connac_txp_common)); + if (is_mt7615(&dev->mt76)) + mt7615_write_fw_txp(dev, tx_info, txp, id); + else + mt76_connac_write_hw_txp(mdev, tx_info, txp, id); + + tx_info->skb = NULL; + + return 0; +} + +void mt7615_dma_reset(struct mt7615_dev *dev) +{ + int i; + + mt76_clear(dev, MT_WPDMA_GLO_CFG, + MT_WPDMA_GLO_CFG_RX_DMA_EN | MT_WPDMA_GLO_CFG_TX_DMA_EN | + MT_WPDMA_GLO_CFG_TX_WRITEBACK_DONE); + + usleep_range(1000, 2000); + + for (i = 0; i < __MT_TXQ_MAX; i++) + mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[i], true); + + for (i = 0; i < __MT_MCUQ_MAX; i++) + mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[i], true); + + mt76_for_each_q_rx(&dev->mt76, i) + mt76_queue_rx_reset(dev, i); + + mt76_tx_status_check(&dev->mt76, true); + + mt7615_dma_start(dev); +} +EXPORT_SYMBOL_GPL(mt7615_dma_reset); + +static void +mt7615_hif_int_event_trigger(struct mt7615_dev *dev, u8 event) +{ + u32 reg = MT_MCU_INT_EVENT; + + if (is_mt7663(&dev->mt76)) + reg = MT7663_MCU_INT_EVENT; + + mt76_wr(dev, reg, event); + + mt7622_trigger_hif_int(dev, true); + mt7622_trigger_hif_int(dev, false); +} + +static bool +mt7615_wait_reset_state(struct mt7615_dev *dev, u32 state) +{ + bool ret; + + ret = wait_event_timeout(dev->reset_wait, + (READ_ONCE(dev->reset_state) & state), + MT7615_RESET_TIMEOUT); + WARN(!ret, "Timeout waiting for MCU reset state %x\n", state); + return ret; +} + +static void +mt7615_update_vif_beacon(void *priv, u8 *mac, struct ieee80211_vif *vif) +{ + struct ieee80211_hw *hw = priv; + struct mt7615_dev *dev = mt7615_hw_dev(hw); + + switch (vif->type) { + case NL80211_IFTYPE_MESH_POINT: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + mt7615_mcu_add_beacon(dev, hw, vif, + vif->bss_conf.enable_beacon); + break; + default: + break; + } +} + +static void +mt7615_update_beacons(struct mt7615_dev *dev) +{ + struct mt76_phy *mphy_ext = dev->mt76.phys[MT_BAND1]; + + ieee80211_iterate_active_interfaces(dev->mt76.hw, + IEEE80211_IFACE_ITER_RESUME_ALL, + mt7615_update_vif_beacon, dev->mt76.hw); + + if (!mphy_ext) + return; + + ieee80211_iterate_active_interfaces(mphy_ext->hw, + IEEE80211_IFACE_ITER_RESUME_ALL, + mt7615_update_vif_beacon, mphy_ext->hw); +} + +void mt7615_mac_reset_work(struct work_struct *work) +{ + struct mt7615_phy *phy2; + struct mt76_phy *ext_phy; + struct mt7615_dev *dev; + unsigned long timeout; + int i; + + dev = container_of(work, struct mt7615_dev, reset_work); + ext_phy = dev->mt76.phys[MT_BAND1]; + phy2 = ext_phy ? ext_phy->priv : NULL; + + if (!(READ_ONCE(dev->reset_state) & MT_MCU_CMD_STOP_PDMA)) + return; + + ieee80211_stop_queues(mt76_hw(dev)); + if (ext_phy) + ieee80211_stop_queues(ext_phy->hw); + + set_bit(MT76_RESET, &dev->mphy.state); + set_bit(MT76_MCU_RESET, &dev->mphy.state); + wake_up(&dev->mt76.mcu.wait); + cancel_delayed_work_sync(&dev->mphy.mac_work); + del_timer_sync(&dev->phy.roc_timer); + cancel_work_sync(&dev->phy.roc_work); + if (phy2) { + set_bit(MT76_RESET, &phy2->mt76->state); + cancel_delayed_work_sync(&phy2->mt76->mac_work); + del_timer_sync(&phy2->roc_timer); + cancel_work_sync(&phy2->roc_work); + } + + /* lock/unlock all queues to ensure that no tx is pending */ + mt76_txq_schedule_all(&dev->mphy); + if (ext_phy) + mt76_txq_schedule_all(ext_phy); + + mt76_worker_disable(&dev->mt76.tx_worker); + mt76_for_each_q_rx(&dev->mt76, i) + napi_disable(&dev->mt76.napi[i]); + napi_disable(&dev->mt76.tx_napi); + + mt7615_mutex_acquire(dev); + + mt7615_hif_int_event_trigger(dev, MT_MCU_INT_EVENT_PDMA_STOPPED); + + if (mt7615_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) { + mt7615_dma_reset(dev); + + mt7615_tx_token_put(dev); + idr_init(&dev->mt76.token); + + mt76_wr(dev, MT_WPDMA_MEM_RNG_ERR, 0); + + mt7615_hif_int_event_trigger(dev, MT_MCU_INT_EVENT_PDMA_INIT); + mt7615_wait_reset_state(dev, MT_MCU_CMD_RECOVERY_DONE); + } + + clear_bit(MT76_MCU_RESET, &dev->mphy.state); + clear_bit(MT76_RESET, &dev->mphy.state); + if (phy2) + clear_bit(MT76_RESET, &phy2->mt76->state); + + mt76_worker_enable(&dev->mt76.tx_worker); + + local_bh_disable(); + napi_enable(&dev->mt76.tx_napi); + napi_schedule(&dev->mt76.tx_napi); + + mt76_for_each_q_rx(&dev->mt76, i) { + napi_enable(&dev->mt76.napi[i]); + napi_schedule(&dev->mt76.napi[i]); + } + local_bh_enable(); + + ieee80211_wake_queues(mt76_hw(dev)); + if (ext_phy) + ieee80211_wake_queues(ext_phy->hw); + + mt7615_hif_int_event_trigger(dev, MT_MCU_INT_EVENT_RESET_DONE); + mt7615_wait_reset_state(dev, MT_MCU_CMD_NORMAL_STATE); + + mt7615_update_beacons(dev); + + mt7615_mutex_release(dev); + + timeout = mt7615_get_macwork_timeout(dev); + ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mphy.mac_work, + timeout); + if (phy2) + ieee80211_queue_delayed_work(ext_phy->hw, + &phy2->mt76->mac_work, timeout); + +} |