drivers/net/can/sja1000/sja1000.h

Source file repositories/reference/linux-study-clean/drivers/net/can/sja1000/sja1000.h

File Facts

System
Linux kernel
Corpus path
drivers/net/can/sja1000/sja1000.h
Extension
.h
Size
5653 bytes
Lines
185
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 sja1000_priv {
	struct can_priv can;	/* must be the first member */
	struct sk_buff *echo_skb;

	/* the lower-layer is responsible for appropriate locking */
	u8 (*read_reg) (const struct sja1000_priv *priv, int reg);
	void (*write_reg) (const struct sja1000_priv *priv, int reg, u8 val);
	void (*pre_irq) (const struct sja1000_priv *priv);
	void (*post_irq) (const struct sja1000_priv *priv);

	void *priv;		/* for board-specific data */
	struct net_device *dev;

	void __iomem *reg_base;	 /* ioremap'ed address to registers */
	unsigned long irq_flags; /* for request_irq() */
	spinlock_t cmdreg_lock;  /* lock for concurrent cmd register writes */

	u16 flags;		/* custom mode flags */
	u8 ocr;			/* output control register */
	u8 cdr;			/* clock divider register */
};

struct net_device *alloc_sja1000dev(int sizeof_priv);
void free_sja1000dev(struct net_device *dev);
int register_sja1000dev(struct net_device *dev);
void unregister_sja1000dev(struct net_device *dev);

irqreturn_t sja1000_interrupt(int irq, void *dev_id);

#endif /* SJA1000_DEV_H */

Annotation

Implementation Notes