added dbug's fec and network routines

BaS_gcc/include/fecbd.h

@@ -0,0 +1,99 @@
+/*
+ * 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  NBUF_SZ  
+#endif
+#ifndef TX_BUF_SZ
+#define TX_BUF_SZ  NBUF_SZ
+#endif
+
+/* 
+ * Number of Rx and Tx Buffers and Buffer Descriptors 
+ */
+#ifndef NRXBD
+#define NRXBD   10
+#endif
+#ifndef NTXBD
+#define NTXBD   4
+#endif
+
+/* 
+ * Buffer Descriptor Format 
+ */
+typedef struct
+{
+    uint16_t status;  /* control and status */
+    uint16_t length;  /* transfer length */
+    uint8_t  *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)
+
+/* 
+ * Functions provided in fec_bd.c 
+ */
+void   
+fecbd_init(uint8_t);
+
+uint32_t fecbd_get_start(uint8_t, uint8_t);
+
+FECBD *
+fecbd_rx_alloc(uint8_t);
+
+FECBD *
+fecbd_tx_alloc(uint8_t);
+
+FECBD *
+fecbd_tx_free(uint8_t);
+
+/*******************************************************************/
+
+#endif /* _FECBD_H_ */