drivers/net/wireless/intersil/p54/p54usb.h

Source file repositories/reference/linux-study-clean/drivers/net/wireless/intersil/p54/p54usb.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/intersil/p54/p54usb.h
Extension
.h
Size
3822 bytes
Lines
160
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 net2280_tx_hdr {
	__le32 device_addr;
	__le16 len;
	__le16 follower;	/* ? */
	u8 padding[8];
} __packed;

struct lm87_tx_hdr {
	__le32 device_addr;
	__le32 chksum;
} __packed;

/* Some flags for the isl hardware registers controlling DMA inside the
 * chip */
#define ISL38XX_DMA_STATUS_DONE			0x00000001
#define ISL38XX_DMA_STATUS_READY		0x00000002
#define NET2280_EPA_FIFO_PCI_ADDR		0x20000000
#define ISL38XX_DMA_MASTER_CONTROL_TRIGGER	0x00000004

enum net2280_op_type {
	NET2280_BRG_U32		= 0x001F,
	NET2280_BRG_CFG_U32	= 0x000F,
	NET2280_BRG_CFG_U16	= 0x0003,
	NET2280_DEV_U32		= 0x080F,
	NET2280_DEV_CFG_U32	= 0x088F,
	NET2280_DEV_CFG_U16	= 0x0883
};

struct net2280_reg_write {
	__le16 port;
	__le32 addr;
	__le32 val;
} __packed;

struct net2280_reg_read {
	__le16 port;
	__le32 addr;
} __packed;

#define P54U_FW_BLOCK 2048

#define X2_SIGNATURE "x2  "
#define X2_SIGNATURE_SIZE 4

struct x2_header {
	u8 signature[X2_SIGNATURE_SIZE];
	__le32 fw_load_addr;
	__le32 fw_length;
	__le32 crc;
} __packed;

/* pipes 3 and 4 are not used by the driver */
#define P54U_PIPE_NUMBER 9

enum p54u_pipe_addr {
        P54U_PIPE_DATA = 0x01,
        P54U_PIPE_MGMT = 0x02,
        P54U_PIPE_3 = 0x03,
        P54U_PIPE_4 = 0x04,
        P54U_PIPE_BRG = 0x0d,
        P54U_PIPE_DEV = 0x0e,
        P54U_PIPE_INT = 0x0f
};

struct p54u_rx_info {
	struct urb *urb;
	struct ieee80211_hw *dev;
};

enum p54u_hw_type {
	P54U_INVALID_HW,
	P54U_NET2280,
	P54U_3887,

	/* keep last */
	__NUM_P54U_HWTYPES,
};

struct p54u_priv {
	struct p54_common common;
	struct usb_device *udev;
	struct usb_interface *intf;
	int (*upload_fw)(struct ieee80211_hw *dev);

	enum p54u_hw_type hw_type;
	spinlock_t lock;
	struct sk_buff_head rx_queue;
	struct usb_anchor submitted;
	const struct firmware *fw;

Annotation

Implementation Notes