pci_mac.c

  1// SPDX-License-Identifier: BSD-3-Clause-Clear
  2/* Copyright (C) 2021 MediaTek Inc. */
  3
  4#include "mt7921.h"
  5#include "../dma.h"
  6#include "../mt76_connac2_mac.h"
  7
  8int mt7921e_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	mt76_connac2_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
 56int mt7921e_mac_reset(struct mt792x_dev *dev)
 57{
 58	int i, err;
 59
 60	mt792xe_mcu_drv_pmctrl(dev);
 61
 62	mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
 63
 64	mt76_wr(dev, dev->irq_map->host_irq_enable, 0);
 65	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
 66
 67	set_bit(MT76_MCU_RESET, &dev->mphy.state);
 68	wake_up(&dev->mt76.mcu.wait);
 69	skb_queue_purge(&dev->mt76.mcu.res_q);
 70
 71	mt76_txq_schedule_all(&dev->mphy);
 72
 73	mt76_worker_disable(&dev->mt76.tx_worker);
 74	napi_disable(&dev->mt76.napi[MT_RXQ_MAIN]);
 75	napi_disable(&dev->mt76.napi[MT_RXQ_MCU]);
 76	napi_disable(&dev->mt76.napi[MT_RXQ_MCU_WA]);
 77	napi_disable(&dev->mt76.tx_napi);
 78
 79	mt76_connac2_tx_token_put(&dev->mt76);
 80	idr_init(&dev->mt76.token);
 81
 82	mt792x_wpdma_reset(dev, true);
 83
 84	mt76_for_each_q_rx(&dev->mt76, i) {
 85		napi_enable(&dev->mt76.napi[i]);
 86	}
 87
 88	local_bh_disable();
 89	mt76_for_each_q_rx(&dev->mt76, i) {
 90		napi_schedule(&dev->mt76.napi[i]);
 91	}
 92	local_bh_enable();
 93
 94	dev->fw_assert = false;
 95	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
 96
 97	mt76_wr(dev, dev->irq_map->host_irq_enable,
 98		dev->irq_map->tx.all_complete_mask |
 99		MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
100	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
101
102	err = mt7921e_driver_own(dev);
103	if (err)
104		goto out;
105
106	err = mt7921_run_firmware(dev);
107	if (err)
108		goto out;
109
110	err = mt7921_mcu_set_eeprom(dev);
111	if (err)
112		goto out;
113
114	err = mt7921_mac_init(dev);
115	if (err)
116		goto out;
117
118	err = __mt7921_start(&dev->phy);
119out:
120
121	napi_enable(&dev->mt76.tx_napi);
122	local_bh_disable();
123	napi_schedule(&dev->mt76.tx_napi);
124	local_bh_enable();
125
126	mt76_worker_enable(&dev->mt76.tx_worker);
127
128	return err;
129}