rtw89-kernel-patch/usb.h at master · Lucid-Duck/rtw89-kernel-patch · GitHub

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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/* Copyright(c) 2025  Realtek Corporation
 */

#ifndef __RTW89_USB_H__
#define __RTW89_USB_H__

#include "txrx.h"

#define RTW89_USB_VENQT			0x05
#define RTW89_USB_VENQT_READ		0xc0
#define RTW89_USB_VENQT_WRITE		0x40

#define RTW89_USB_RECVBUF_SZ		20480
#define RTW89_USB_RXCB_NUM		8
#define RTW89_USB_RX_SKB_NUM		16
#define RTW89_USB_MAX_RXQ_LEN		512
#define RTW89_USB_MOD512_PADDING	4

#define RTW89_MAX_ENDPOINT_NUM		9
#define RTW89_MAX_BULKIN_NUM		2
#define RTW89_MAX_BULKOUT_NUM		7

/* TX flow control: max in-flight URBs per channel */
#define RTW89_USB_MAX_TX_URBS_PER_CH	32

struct rtw89_usb_info {
	u32 usb_host_request_2;
	u32 usb_wlan0_1;
	u32 hci_func_en;
	u32 usb3_mac_npi_config_intf_0;
	u32 usb_endpoint_0;
	u32 usb_endpoint_2;
	u8 bulkout_id[RTW89_DMA_CH_NUM];
};

struct rtw89_usb_rx_ctrl_block {
	struct rtw89_dev *rtwdev;
	struct urb *rx_urb;
	struct sk_buff *rx_skb;
};

struct rtw89_usb_tx_ctrl_block {
	struct rtw89_dev *rtwdev;
	u8 txch;
	struct sk_buff_head tx_ack_queue;
};

struct rtw89_usb {
	struct rtw89_dev *rtwdev;
	struct usb_device *udev;
	const struct rtw89_usb_info *info;

	__le32 *vendor_req_buf;

	atomic_t continual_io_error;

	u8 in_pipe[RTW89_MAX_BULKIN_NUM];
	u8 out_pipe[RTW89_MAX_BULKOUT_NUM];

	struct workqueue_struct *rxwq;
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 9, 0)
	struct tasklet_struct rx_tasklet; // Can't use BH workqueue
#endif
	struct rtw89_usb_rx_ctrl_block rx_cb[RTW89_USB_RXCB_NUM];
	struct sk_buff_head rx_queue;
	struct sk_buff_head rx_free_queue;
	struct work_struct rx_work;
	struct work_struct rx_urb_work;
	struct usb_anchor tx_submitted;

	struct sk_buff_head tx_queue[RTW89_TXCH_NUM];

	/* TX flow control: track in-flight URBs per channel */
	atomic_t tx_inflight[RTW89_TXCH_NUM];
};

static inline struct rtw89_usb *rtw89_usb_priv(struct rtw89_dev *rtwdev)
{
	return (struct rtw89_usb *)rtwdev->priv;
}

int rtw89_usb_probe(struct usb_interface *intf,
		    const struct usb_device_id *id);
void rtw89_usb_disconnect(struct usb_interface *intf);

#endif