drivers/net/ethernet/freescale/fec.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/freescale/fec.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/freescale/fec.h
Extension
.h
Size
26553 bytes
Lines
706
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 bufdesc {
	__fec16 cbd_datlen;	/* Data length */
	__fec16 cbd_sc;		/* Control and status info */
	__fec32 cbd_bufaddr;	/* Buffer address */
};
#else
#define fec32_to_cpu be32_to_cpu
#define fec16_to_cpu be16_to_cpu
#define cpu_to_fec32 cpu_to_be32
#define cpu_to_fec16 cpu_to_be16
#define __fec32 __be32
#define __fec16 __be16

struct bufdesc {
	__fec16	cbd_sc;		/* Control and status info */
	__fec16	cbd_datlen;	/* Data length */
	__fec32	cbd_bufaddr;	/* Buffer address */
};
#endif

struct bufdesc_ex {
	struct bufdesc desc;
	__fec32 cbd_esc;
	__fec32 cbd_prot;
	__fec32 cbd_bdu;
	__fec32 ts;
	__fec16 res0[4];
};

/* Buffer descriptor control/status used by Ethernet receive.
 */
#define BD_ENET_RX_EMPTY	((ushort)0x8000)
#define BD_ENET_RX_WRAP		((ushort)0x2000)
#define BD_ENET_RX_INTR		((ushort)0x1000)
#define BD_ENET_RX_LAST		((ushort)0x0800)
#define BD_ENET_RX_FIRST	((ushort)0x0400)
#define BD_ENET_RX_MISS		((ushort)0x0100)
#define BD_ENET_RX_LG		((ushort)0x0020)
#define BD_ENET_RX_NO		((ushort)0x0010)
#define BD_ENET_RX_SH		((ushort)0x0008)
#define BD_ENET_RX_CR		((ushort)0x0004)
#define BD_ENET_RX_OV		((ushort)0x0002)
#define BD_ENET_RX_CL		((ushort)0x0001)
#define BD_ENET_RX_STATS	((ushort)0x013f)	/* All status bits */

/* Enhanced buffer descriptor control/status used by Ethernet receive */
#define BD_ENET_RX_VLAN		0x00000004

/* Buffer descriptor control/status used by Ethernet transmit.
 */
#define BD_ENET_TX_READY	((ushort)0x8000)
#define BD_ENET_TX_PAD		((ushort)0x4000)
#define BD_ENET_TX_WRAP		((ushort)0x2000)
#define BD_ENET_TX_INTR		((ushort)0x1000)
#define BD_ENET_TX_LAST		((ushort)0x0800)
#define BD_ENET_TX_TC		((ushort)0x0400)
#define BD_ENET_TX_DEF		((ushort)0x0200)
#define BD_ENET_TX_HB		((ushort)0x0100)
#define BD_ENET_TX_LC		((ushort)0x0080)
#define BD_ENET_TX_RL		((ushort)0x0040)
#define BD_ENET_TX_RCMASK	((ushort)0x003c)
#define BD_ENET_TX_UN		((ushort)0x0002)
#define BD_ENET_TX_CSL		((ushort)0x0001)
#define BD_ENET_TX_STATS	((ushort)0x0fff)	/* All status bits */

/* enhanced buffer descriptor control/status used by Ethernet transmit */
#define BD_ENET_TX_INT		0x40000000
#define BD_ENET_TX_TS		0x20000000
#define BD_ENET_TX_PINS		0x10000000
#define BD_ENET_TX_IINS		0x08000000


/* This device has up to three irqs on some platforms */
#define FEC_IRQ_NUM		3

/* Maximum number of queues supported
 * ENET with AVB IP can support up to 3 independent tx queues and rx queues.
 * User can point the queue number that is less than or equal to 3.
 */
#define FEC_ENET_MAX_TX_QS	3
#define FEC_ENET_MAX_RX_QS	3

#define FEC_R_DES_START(X)	(((X) == 1) ? FEC_R_DES_START_1 : \
				(((X) == 2) ? \
					FEC_R_DES_START_2 : FEC_R_DES_START_0))
#define FEC_X_DES_START(X)	(((X) == 1) ? FEC_X_DES_START_1 : \
				(((X) == 2) ? \
					FEC_X_DES_START_2 : FEC_X_DES_START_0))
#define FEC_R_BUFF_SIZE(X)	(((X) == 1) ? FEC_R_BUFF_SIZE_1 : \
				(((X) == 2) ? \

Annotation

Implementation Notes