drivers/net/fec_imx.h File Reference

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Detailed Description

Data Structures
struct	buffer_descriptor
	Receive & Transmit Buffer Descriptor definitions. More...
struct	fec_priv
	i.MX27-FEC private structure More...
Defines
#define	DB_ALIGNMENT   16
#define	DB_DATA_ALIGNMENT   16
#define	FEC_RBD_NUM   64
#define	FEC_MAX_PKT_SIZE   1536

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Define Documentation

#define DB_ALIGNMENT   16

Descriptor buffer alignment.

i.MX27 requires a 16 byte alignment (but for the first element only)

#define DB_DATA_ALIGNMENT   16

Data buffer alignment.

i.MX27 requires a 16 byte alignment

Note: Valid for member data_pointer in struct buffer_descriptor

#define FEC_ECNTRL_ETHER_EN   0x00000002

enable the FEC

#define FEC_ECNTRL_RESET   0x00000001

reset the FEC

#define FEC_MAX_PKT_SIZE   1536

Define the ethernet packet size limit in memory.

Note: Do not shrink this number. This will force the FEC to spread larger frames in more than one BD. This is nothing to worry about, but the current driver can't handle it.

#define FEC_MII_DATA_DATAMSK   0x0000ffff

PHY data field.

#define FEC_MII_DATA_OP_RD   0x20000000

Perform a read operation.

#define FEC_MII_DATA_OP_WR   0x10000000

Perform a write operation.

#define FEC_MII_DATA_PA_MSK   0x0f800000

PHY Address field mask.

#define FEC_MII_DATA_RA_MSK   0x007c0000

PHY Register field mask.

#define FEC_MII_DATA_ST   0x40000000

Start of frame delimiter.

#define FEC_MII_DATA_TA   0x00020000

Turnaround.

#define FEC_RBD_BC   0x0080

Receive BD status: The received frame is broadcast frame.

#define FEC_RBD_CR   0x0004

Receive BD status: CRC error.

#define FEC_RBD_EMPTY   0x8000

Receive BD status: Buffer is empty.

#define FEC_RBD_INT   0x1000

Receive BD status: Interrupt.

#define FEC_RBD_LAST   0x0800

Receive BD status: Buffer is last in frame (useless here!).

#define FEC_RBD_LG   0x0020

Receive BD status: Frame length violation.

#define FEC_RBD_MC   0x0040

Receive BD status: The received frame is multicast frame.

#define FEC_RBD_MISS   0x0100

Receive BD status: Miss bit for prom mode.

#define FEC_RBD_NO   0x0010

Receive BD status: Nonoctet align frame.

#define FEC_RBD_NUM   64

Numbers of buffer descriptors for receiving.

The number defines the stocked memory buffers for the receiving task. Larger values makes no sense in this limited environment.

#define FEC_RBD_OV   0x0002

Receive BD status: Receive FIFO overrun.

#define FEC_RBD_SH   0x0008

Receive BD status: Short frame.

#define FEC_RBD_TR   0x0001

Receive BD status: Frame is truncated.

#define FEC_RBD_WRAP   0x2000

Receive BD status: Last BD in ring.

#define FEC_TBD_ABC   0x0200

Tansmit BD status: Append bad CRC.

#define FEC_TBD_INT   0x1000

Tansmit BD status: Interrupt.

#define FEC_TBD_LAST   0x0800

Tansmit BD status: Buffer is last in frame.

#define FEC_TBD_READY   0x8000

Tansmit BD status: Buffer is ready.

#define FEC_TBD_TC   0x0400

Tansmit BD status: Transmit the CRC.

#define FEC_TBD_WRAP   0x2000

Tansmit BD status: Mark as last BD in ring.