drivers/net/ethernet/qlogic/qed/qed_ll2.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/qlogic/qed/qed_ll2.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/qlogic/qed/qed_ll2.h
Extension
.h
Size
7075 bytes
Lines
261
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 qed_ll2_rx_packet {
	struct list_head list_entry;
	struct core_rx_bd_with_buff_len *rxq_bd;
	dma_addr_t rx_buf_addr;
	u16 buf_length;
	void *cookie;
	u8 placement_offset;
	u16 parse_flags;
	u16 packet_length;
	u16 vlan;
	u32 opaque_data[2];
};

struct qed_ll2_tx_packet {
	struct list_head list_entry;
	u16 bd_used;
	bool notify_fw;
	void *cookie;
	/* Flexible Array of bds_set determined by max_bds_per_packet */
	struct {
		struct core_tx_bd *txq_bd;
		dma_addr_t tx_frag;
		u16 frag_len;
	} bds_set[];
};

struct qed_ll2_rx_queue {
	/* Lock protecting the Rx queue manipulation */
	spinlock_t lock;
	struct qed_chain rxq_chain;
	struct qed_chain rcq_chain;
	u8 rx_sb_index;
	u8 ctx_based;
	bool b_cb_registered;
	__le16 *p_fw_cons;
	struct list_head active_descq;
	struct list_head free_descq;
	struct list_head posting_descq;
	struct qed_ll2_rx_packet *descq_array;
	void __iomem *set_prod_addr;
	struct core_pwm_prod_update_data db_data;
};

struct qed_ll2_tx_queue {
	/* Lock protecting the Tx queue manipulation */
	spinlock_t lock;
	struct qed_chain txq_chain;
	u8 tx_sb_index;
	bool b_cb_registered;
	__le16 *p_fw_cons;
	struct list_head active_descq;
	struct list_head free_descq;
	struct list_head sending_descq;
	u16 cur_completing_bd_idx;
	void __iomem *doorbell_addr;
	struct core_db_data db_msg;
	u16 bds_idx;
	u16 cur_send_frag_num;
	u16 cur_completing_frag_num;
	bool b_completing_packet;
	void *descq_mem; /* memory for variable sized qed_ll2_tx_packet*/
	struct qed_ll2_tx_packet *cur_send_packet;
	struct qed_ll2_tx_packet cur_completing_packet;
};

struct qed_ll2_info {
	/* Lock protecting the state of LL2 */
	struct mutex mutex;

	struct qed_ll2_acquire_data_inputs input;
	u32 cid;
	u8 my_id;
	u8 queue_id;
	u8 tx_stats_id;
	bool b_active;
	enum core_tx_dest tx_dest;
	u8 tx_stats_en;
	bool main_func_queue;
	struct qed_ll2_cbs cbs;
	struct qed_ll2_rx_queue rx_queue;
	struct qed_ll2_tx_queue tx_queue;
};

extern const struct qed_ll2_ops qed_ll2_ops_pass;

/**
 * qed_ll2_acquire_connection(): Allocate resources,
 *                               starts rx & tx (if relevant) queues pair.
 *                               Provides connecion handler as output
 *                               parameter.

Annotation

Implementation Notes