no scc_hdlc struct in commproc.h

[Tobias Otto-Adamczak]

Hello Julia,

> I did not find a scc_hdlc structure like scc_enet and scc_uart in
> commproc.h.

I wrote the following one for my project (which is about adding ISDN
functionality for MPC860):

/*********   SCC parameter RAM for HDLC mode   *********/
typedef struct scc_hdlc {
	ushort	scc_rbase;	// Rx Buffer descriptor base address
	ushort	scc_tbase;	// Tx Buffer descriptor base address
	u_char	scc_rfcr;	// Rx function code
	u_char	scc_tfcr;	// Tx function code
	ushort	scc_mrblr;	// Max receive buffer length
	uint	scc_rstate;	// internal
	uint	scc_idp;	// internal
	ushort	scc_rbptr;	// internal
	ushort	scc_ibc;	// internal
	uint	scc_rxtmp;	// internal
	uint	scc_tstate;	// internal
	uint	scc_tdp;	// internal
	ushort	scc_tbptr;	// internal
	ushort	scc_tbc;	// internal
	uint	scc_txtmp;	// internal
	uint	scc_rcrc;	// internal
	uint	scc_tcrc;	// internal
	// here begins HDLC specific part
	uint	scc_res1;	// reserved
	uint	scc_cmask;	// CRC mask
	uint	scc_cpres;	// CRC preset
	ushort	scc_disfc;	// discarded frame counter
	ushort	scc_crcec;	// CRC error counter
	ushort	scc_abtsc;	// abort sequence counter
	ushort	scc_nmarc;	// nonmatching address receive counter
	ushort	scc_retrc;	// frame retransmission counter
	ushort	scc_mflr;	// Max frame length register
	ushort	scc_maxcnt;	// internal
	ushort	scc_rfthr;	// recceived frames threshold
	ushort	scc_rfcnt;	// internal
	ushort	scc_hmask;	// HDLC address mask register
	ushort	scc_haddr1;	// HDLC address register 1
	ushort	scc_haddr2;	// HDLC address register 2
	ushort	scc_haddr3;	// HDLC address register 3
	ushort	scc_haddr4;	// HDLC address register 4
	ushort	scc_tmp;	// internal
	ushort	scc_tmp_mb;	// internal
} scc_hdlc_t;

Ciao - Tobias


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