drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
Extension
.c
Size
7661 bytes
Lines
296
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: BSD-3-Clause-Clear
/* 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_link *mvif = (struct mt76_vif_link *)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);
	}

Annotation

Implementation Notes