| /* | |
| * File: fecbd.h | |
| * Purpose: | |
| * | |
| * Purpose: Provide a simple buffer management driver | |
| */ | |
| #ifndef _FECBD_H_ | |
| #define _FECBD_H_ | |
| /********************************************************************/ | |
| #define Rx 1 | |
| #define Tx 0 | |
| /* | |
| * Buffer sizes in bytes | |
| */ | |
| #ifndef RX_BUF_SZ | |
| #define RX_BUF_SZ 1520 //2048 | |
| #endif | |
| #ifndef TX_BUF_SZ | |
| #define TX_BUF_SZ 1520 | |
| #endif | |
| /* | |
| * Buffer Descriptor Format | |
| */ | |
| #pragma options align= packed | |
| typedef struct | |
| { | |
| unsigned short status; /* control and status */ | |
| unsigned short length; /* transfer length */ | |
| unsigned char *data; /* buffer address */ | |
| } FECBD; | |
| /* | |
| * Bit level definitions for status field of buffer descriptors | |
| */ | |
| #define TX_BD_R 0x8000 | |
| #define TX_BD_TO1 0x4000 | |
| #define TX_BD_W 0x2000 | |
| #define TX_BD_TO2 0x1000 | |
| #define TX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */ | |
| #define TX_BD_L 0x0800 | |
| #define TX_BD_TC 0x0400 | |
| #define TX_BD_DEF 0x0200 /* MCF5272 Only */ | |
| #define TX_BD_ABC 0x0200 | |
| #define TX_BD_HB 0x0100 /* MCF5272 Only */ | |
| #define TX_BD_LC 0x0080 /* MCF5272 Only */ | |
| #define TX_BD_RL 0x0040 /* MCF5272 Only */ | |
| #define TX_BD_UN 0x0002 /* MCF5272 Only */ | |
| #define TX_BD_CSL 0x0001 /* MCF5272 Only */ | |
| #define RX_BD_E 0x8000 | |
| #define RX_BD_R01 0x4000 | |
| #define RX_BD_W 0x2000 | |
| #define RX_BD_R02 0x1000 | |
| #define RX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */ | |
| #define RX_BD_L 0x0800 | |
| #define RX_BD_M 0x0100 | |
| #define RX_BD_BC 0x0080 | |
| #define RX_BD_MC 0x0040 | |
| #define RX_BD_LG 0x0020 | |
| #define RX_BD_NO 0x0010 | |
| #define RX_BD_CR 0x0004 | |
| #define RX_BD_OV 0x0002 | |
| #define RX_BD_TR 0x0001 | |
| #define RX_BD_ERROR (RX_BD_NO | RX_BD_CR | RX_BD_OV | RX_BD_TR) | |
| /* | |
| * The following defines are provided by the MCF547x/8x | |
| * DMA API. These are shown here to show their correlation | |
| * to the other FEC buffer descriptor status bits | |
| * | |
| * #define MCD_FEC_BUF_READY 0x8000 | |
| * #define MCD_FEC_WRAP 0x2000 | |
| * #define MCD_FEC_INTERRUPT 0x1000 | |
| * #define MCD_FEC_END_FRAME 0x0800 | |
| */ | |
| /* | |
| * Functions provided in fec_bd.c | |
| */ | |
| int fecbd_init(int, int, int); | |
| void fecbd_flush(int); | |
| void fecbd_dump( void ); | |
| unsigned long fecbd_get_start(int, int); | |
| FECBD* fecbd_rx_alloc(int); | |
| FECBD* fecbd_tx_alloc(int); | |
| FECBD* fecbd_tx_free(int); | |
| /* | |
| * Error codes | |
| */ | |
| #define ERR_MALLOC (-1) | |
| #define ERR_NBUFALLOC (-2) | |
| /*******************************************************************/ | |
| #endif /* _FECBD_H_ */ |