drivers/net/dsa/vitesse-vsc73xx.h

Source file repositories/reference/linux-study-clean/drivers/net/dsa/vitesse-vsc73xx.h

File Facts

System
Linux kernel
Corpus path
drivers/net/dsa/vitesse-vsc73xx.h
Extension
.h
Size
3112 bytes
Lines
95
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 vsc73xx_portinfo {
	u16		pvid_vlan_filtering;
	u16		pvid_tag_8021q;
	bool		pvid_vlan_filtering_configured;
	bool		pvid_tag_8021q_configured;
};

/**
 * struct vsc73xx - VSC73xx state container: main data structure
 * @dev: The device pointer
 * @reset: The descriptor for the GPIO line tied to the reset pin
 * @ds: Pointer to the DSA core structure
 * @gc: Main structure of the GPIO controller
 * @chipid: Storage for the Chip ID value read from the CHIPID register of the
 *	switch
 * @addr: MAC address used in flow control frames
 * @ops: Structure with hardware-dependent operations
 * @priv: Pointer to the configuration interface structure
 * @portinfo: Storage table portinfo structructures
 * @vlans: List of configured vlans. Contains port mask and untagged status of
 *	every vlan configured in port vlan operation. It doesn't cover tag_8021q
 *	vlans.
 * @fdb_lock: Mutex protects fdb access
 */
struct vsc73xx {
	struct device			*dev;
	struct gpio_desc		*reset;
	struct dsa_switch		*ds;
	struct gpio_chip		gc;
	u16				chipid;
	u8				addr[ETH_ALEN];
	const struct vsc73xx_ops	*ops;
	void				*priv;
	struct vsc73xx_portinfo		portinfo[VSC73XX_MAX_NUM_PORTS];
	struct list_head		vlans;
	struct mutex			fdb_lock;
};

/**
 * struct vsc73xx_ops - VSC73xx methods container
 * @read: Method for register reading over the hardware-dependent interface
 * @write: Method for register writing over the hardware-dependent interface
 */
struct vsc73xx_ops {
	int (*read)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
		    u32 *val);
	int (*write)(struct vsc73xx *vsc, u8 block, u8 subblock, u8 reg,
		     u32 val);
};

/**
 * struct vsc73xx_bridge_vlan - VSC73xx driver structure which keeps vlan
 *	database copy
 * @vid: VLAN number
 * @portmask: each bit represents one port
 * @untagged: each bit represents one port configured with @vid untagged
 * @list: list structure
 */
struct vsc73xx_bridge_vlan {
	u16 vid;
	u8 portmask;
	u8 untagged;
	struct list_head list;
};

int vsc73xx_is_addr_valid(u8 block, u8 subblock);
int vsc73xx_probe(struct vsc73xx *vsc);
void vsc73xx_remove(struct vsc73xx *vsc);
void vsc73xx_shutdown(struct vsc73xx *vsc);

Annotation

Implementation Notes