1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2021 MediaTek Inc. */
3 
4 #include "mt7921.h"
5 #include "../dma.h"
6 #include "../mt76_connac2_mac.h"
7 
8 int 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->last_txs + HZ / 4)) {
38 			info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
39 			msta->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 
56 int 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_RESET, &dev->mphy.state);
68 	set_bit(MT76_MCU_RESET, &dev->mphy.state);
69 	wake_up(&dev->mt76.mcu.wait);
70 	skb_queue_purge(&dev->mt76.mcu.res_q);
71 
72 	mt76_txq_schedule_all(&dev->mphy);
73 
74 	mt76_worker_disable(&dev->mt76.tx_worker);
75 	napi_disable(&dev->mt76.napi[MT_RXQ_MAIN]);
76 	napi_disable(&dev->mt76.napi[MT_RXQ_MCU]);
77 	napi_disable(&dev->mt76.napi[MT_RXQ_MCU_WA]);
78 	napi_disable(&dev->mt76.tx_napi);
79 
80 	mt76_connac2_tx_token_put(&dev->mt76);
81 	idr_init(&dev->mt76.token);
82 
83 	mt792x_wpdma_reset(dev, true);
84 
85 	local_bh_disable();
86 	mt76_for_each_q_rx(&dev->mt76, i) {
87 		napi_enable(&dev->mt76.napi[i]);
88 		napi_schedule(&dev->mt76.napi[i]);
89 	}
90 	local_bh_enable();
91 
92 	dev->fw_assert = false;
93 	clear_bit(MT76_MCU_RESET, &dev->mphy.state);
94 
95 	mt76_wr(dev, dev->irq_map->host_irq_enable,
96 		dev->irq_map->tx.all_complete_mask |
97 		MT_INT_RX_DONE_ALL | MT_INT_MCU_CMD);
98 	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
99 
100 	err = mt7921e_driver_own(dev);
101 	if (err)
102 		goto out;
103 
104 	err = mt7921_run_firmware(dev);
105 	if (err)
106 		goto out;
107 
108 	err = mt7921_mcu_set_eeprom(dev);
109 	if (err)
110 		goto out;
111 
112 	err = mt7921_mac_init(dev);
113 	if (err)
114 		goto out;
115 
116 	err = __mt7921_start(&dev->phy);
117 out:
118 	clear_bit(MT76_RESET, &dev->mphy.state);
119 
120 	local_bh_disable();
121 	napi_enable(&dev->mt76.tx_napi);
122 	napi_schedule(&dev->mt76.tx_napi);
123 	local_bh_enable();
124 
125 	mt76_worker_enable(&dev->mt76.tx_worker);
126 
127 	return err;
128 }
129