drivers/net/wireless/realtek/rtw89/usb.h

Source file repositories/reference/linux-study-clean/drivers/net/wireless/realtek/rtw89/usb.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/realtek/rtw89/usb.h
Extension
.h
Size
2438 bytes
Lines
102
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source 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

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 rx_agg_alignment;
	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;
	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];
	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

Annotation

Implementation Notes