drivers/net/wireless/mediatek/mt76/mt7925/pci_mac.c

   1 // SPDX-License-Identifier: ISC
   2 /* Copyright (C) 2023 MediaTek Inc. */
   3
   4 #include "mt7925.h"
   5 #include "../dma.h"
   6 #include "mac.h"
   7
   8 int mt7925e_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
   9                            enum mt76_txq_id qid, struct mt76_wcid *wcid,
  10                            struct ieee80211_sta *sta,
  11                            struct mt76_tx_info *tx_info)
  12 {
  13         struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
  14         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
  15         struct ieee80211_key_conf *key = info->control.hw_key;
  16         struct mt76_connac_hw_txp *txp;
  17         struct mt76_txwi_cache *t;
  18         int id, pid;
  19         u8 *txwi = (u8 *)txwi_ptr;
  20
  21         if (unlikely(tx_info->skb->len <= ETH_HLEN))
  22                 return -EINVAL;
  23
  24         if (!wcid)
  25                 wcid = &dev->mt76.global_wcid;
  26
  27         t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
  28         t->skb = tx_info->skb;
  29
  30         id = mt76_token_consume(mdev, &t);
  31         if (id < 0)
  32                 return id;
  33
  34         if (sta) {
  35                 struct mt792x_sta *msta = (struct mt792x_sta *)sta->drv_priv;
  36
  37                 if (time_after(jiffies, msta->deflink.last_txs + HZ / 4)) {
  38                         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
  39                         msta->deflink.last_txs = jiffies;
  40                 }
  41         }
  42
  43         pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
  44         mt7925_mac_write_txwi(mdev, txwi_ptr, tx_info->skb, wcid, key,
  45                               pid, qid, 0);
  46
  47         txp = (struct mt76_connac_hw_txp *)(txwi + MT_TXD_SIZE);
  48         memset(txp, 0, sizeof(struct mt76_connac_hw_txp));
  49         mt76_connac_write_hw_txp(mdev, tx_info, txp, id);
  50
  51         tx_info->skb = NULL;
  52
  53         return 0;
  54 }
  55
  56 void mt7925_tx_token_put(struct mt792x_dev *dev)
  57 {
  58         struct mt76_txwi_cache *txwi;
  59         int id;
  60
  61         spin_lock_bh(&dev->mt76.token_lock);
  62         idr_for_each_entry(&dev->mt76.token, txwi, id) {
  63                 mt7925_txwi_free(dev, txwi, NULL, NULL, NULL);
  64                 dev->mt76.token_count--;
  65         }
  66         spin_unlock_bh(&dev->mt76.token_lock);
  67         idr_destroy(&dev->mt76.token);
  68 }
  69
  70 int mt7925e_mac_reset(struct mt792x_dev *dev)
  71 {
  72         const struct mt792x_irq_map *irq_map = dev->irq_map;
  73         int i, err;
  74
  75         mt792xe_mcu_drv_pmctrl(dev);
  76
  77         mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
  78
  79         mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
  80         mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
  81
  82         set_bit(MT76_RESET, &dev->mphy.state);
  83         set_bit(MT76_MCU_RESET, &dev->mphy.state);
  84         wake_up(&dev->mt76.mcu.wait);
  85         skb_queue_purge(&dev->mt76.mcu.res_q);
  86
  87         mt76_txq_schedule_all(&dev->mphy);
  88
  89         mt76_worker_disable(&dev->mt76.tx_worker);
  90         if (irq_map->rx.data_complete_mask)
  91                 napi_disable(&dev->mt76.napi[MT_RXQ_MAIN]);
  92         if (irq_map->rx.wm_complete_mask)
  93                 napi_disable(&dev->mt76.napi[MT_RXQ_MCU]);
  94         if (irq_map->rx.wm2_complete_mask)
  95                 napi_disable(&dev->mt76.napi[MT_RXQ_MCU_WA]);
  96         if (irq_map->tx.all_complete_mask)
  97                 napi_disable(&dev->mt76.tx_napi);
  98
  99         mt7925_tx_token_put(dev);
 100         idr_init(&dev->mt76.token);
 101
 102         mt792x_wpdma_reset(dev, true);
 103
 104         local_bh_disable();
 105         mt76_for_each_q_rx(&dev->mt76, i) {
 106                 napi_enable(&dev->mt76.napi[i]);
 107                 napi_schedule(&dev->mt76.napi[i]);
 108         }
 109         napi_enable(&dev->mt76.tx_napi);
 110         napi_schedule(&dev->mt76.tx_napi);
 111         local_bh_enable();
 112
 113         dev->fw_assert = false;
 114         clear_bit(MT76_MCU_RESET, &dev->mphy.state);
 115
 116         mt76_wr(dev, dev->irq_map->host_irq_enable,
 117                 dev->irq_map->tx.all_complete_mask |
 118                 MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
 119         mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
 120
 121         err = mt792xe_mcu_fw_pmctrl(dev);
 122         if (err)
 123                 return err;
 124
 125         err = __mt792xe_mcu_drv_pmctrl(dev);
 126         if (err)
 127                 goto out;
 128
 129         err = mt7925_run_firmware(dev);
 130         if (err)
 131                 goto out;
 132
 133         err = mt7925_mcu_set_eeprom(dev);
 134         if (err)
 135                 goto out;
 136
 137         err = mt7925_mac_init(dev);
 138         if (err)
 139                 goto out;
 140
 141         err = __mt7925_start(&dev->phy);
 142 out:
 143         clear_bit(MT76_RESET, &dev->mphy.state);
 144
 145         mt76_worker_enable(&dev->mt76.tx_worker);
 146
 147         return err;
 148 }