drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.h

Source file repositories/reference/linux-study-clean/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.h
Extension
.h
Size
2097 bytes
Lines
79
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 dpmaif_drb {
	__le32 header;
	union {
		struct {
			__le32 data_addr_l;
			__le32 data_addr_h;
		} pd;
		struct {
			__le32 msg_hdr;
			__le32 reserved1;
		} msg;
	};
	__le32 reserved2;
};

/* Header fields */
#define DRB_HDR_DATA_LEN	GENMASK(31, 16)
#define DRB_HDR_RESERVED	GENMASK(15, 3)
#define DRB_HDR_CONT		BIT(2)
#define DRB_HDR_DTYP		GENMASK(1, 0)

#define DRB_MSG_DW2_RES		GENMASK(31, 30)
#define DRB_MSG_L4_CHK		BIT(29)
#define DRB_MSG_IP_CHK		BIT(28)
#define DRB_MSG_RESERVED	BIT(27)
#define DRB_MSG_NETWORK_TYPE	GENMASK(26, 24)
#define DRB_MSG_CHANNEL_ID	GENMASK(23, 16)
#define DRB_MSG_COUNT_L		GENMASK(15, 0)

struct dpmaif_drb_skb {
	struct sk_buff		*skb;
	dma_addr_t		bus_addr;
	unsigned int		data_len;
	u16			index:13;
	u16			is_msg:1;
	u16			is_frag:1;
	u16			is_last:1;
};

int t7xx_dpmaif_tx_send_skb(struct dpmaif_ctrl *dpmaif_ctrl, unsigned int txq_number,
			    struct sk_buff *skb);
void t7xx_dpmaif_tx_thread_rel(struct dpmaif_ctrl *dpmaif_ctrl);
int t7xx_dpmaif_tx_thread_init(struct dpmaif_ctrl *dpmaif_ctrl);
void t7xx_dpmaif_txq_free(struct dpmaif_tx_queue *txq);
void t7xx_dpmaif_irq_tx_done(struct dpmaif_ctrl *dpmaif_ctrl, unsigned int que_mask);
int t7xx_dpmaif_txq_init(struct dpmaif_tx_queue *txq);
void t7xx_dpmaif_tx_stop(struct dpmaif_ctrl *dpmaif_ctrl);
void t7xx_dpmaif_tx_clear(struct dpmaif_ctrl *dpmaif_ctrl);

#endif /* __T7XX_HIF_DPMA_TX_H__ */

Annotation

Implementation Notes