drivers/net/ethernet/intel/ice/ice_controlq.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/ice/ice_controlq.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/ice/ice_controlq.h
Extension
.h
Size
2803 bytes
Lines
105
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 ice_ctl_q_ring {
	void *dma_head;			/* Virtual address to DMA head */
	struct ice_dma_mem desc_buf;	/* descriptor ring memory */

	union {
		struct ice_dma_mem *sq_bi;
		struct ice_dma_mem *rq_bi;
	} r;

	u16 count;		/* Number of descriptors */

	/* used for interrupt processing */
	u16 next_to_use;
	u16 next_to_clean;

	/* used for queue tracking */
	u32 head;
	u32 tail;
	u32 len;
	u32 bah;
	u32 bal;
	u32 len_mask;
	u32 len_ena_mask;
	u32 len_crit_mask;
	u32 head_mask;
};

/* sq transaction details */
struct ice_sq_cd {
	struct libie_aq_desc *wb_desc;
};

/* rq event information */
struct ice_rq_event_info {
	struct libie_aq_desc desc;
	u16 msg_len;
	u16 buf_len;
	u8 *msg_buf;
};

/* Control Queue information */
struct ice_ctl_q_info {
	enum ice_ctl_q qtype;
	struct ice_ctl_q_ring rq;	/* receive queue */
	struct ice_ctl_q_ring sq;	/* send queue */
	u16 num_rq_entries;		/* receive queue depth */
	u16 num_sq_entries;		/* send queue depth */
	u16 rq_buf_size;		/* receive queue buffer size */
	u16 sq_buf_size;		/* send queue buffer size */
	enum libie_aq_err sq_last_status;	/* last status on send queue */
	struct mutex sq_lock;		/* Send queue lock */
	struct mutex rq_lock;		/* Receive queue lock */
};

#endif /* _ICE_CONTROLQ_H_ */

Annotation

Implementation Notes