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/*
* (C) Copyright 2008
* Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _KEYMILE_HDLC_ENET_H_
#define _KEYMILE_HDLC_ENET_H_
/* Unfortuantely, we have do this to get the flag defines in the cbd_t */
#ifdef CONFIG_MGSUVD
#include <commproc.h>
#endif
#ifdef CONFIG_MGCOGE
#include <mpc8260.h>
#include <asm/cpm_8260.h>
#endif
/*
* Defines for the ICN protocol used for communication over HDLC
* on the backplane between MGSUVDs and MGCOGEs.
*/
/*
* MAC which is reserved for communication (0x00 - 0xff in the last byte,
* which is the slot number)
*/
/*
* A DLL frame looks like this:
* 8 bit | 8 bit | 8 bit | 8 bit | n * 8 bit| 16 bit| 8 bit
* opening| destination| source | application| data | FCS | closing
* flag | address | address| | | | flag
* (HW) (APP) (APP) (APP) (APP) (HW) (HW)
*/
/*
* The opening flag, the FCS and the closing flag are set by the hardware so
* they are not reflected in this struct.
*/
struct icn_hdr {
unsigned char dest_addr;
unsigned char src_addr;
unsigned char application;
} __attribute__((packed));
#define ICNHDR_LEN (sizeof(struct icn_hdr))
#define CRC_LEN (sizeof(short))
/* bytes to remove from packet before sending it upstream */
#define REMOVE (ICNHDR_LEN + CRC_LEN)
struct icn_frame {
struct icn_hdr hdr;
unsigned char data[0]; /* a place holder */
} __attribute__((packed));
/* Address field */
#define HDLC_UUA 0x00 /* Unicast Unit Address */
#define HDLC_UUA_MASK 0x3f /* the last 6 bits contain the slot number */
#define SET_HDLC_UUA(x) ((HDLC_UUA | ((x) & HDLC_UUA_MASK)))
#define HDLC_UACUA 0x7f /* Unicast Active Control Unit Address */
#define HDLC_BCAST 0xff /* broadcast */
/* Application field */
#define MGS_UUSP 0x00
#define MGS_UREP 0x01
#define MGS_IUP 0x02
#define MGS_UTA 0x03
#define MGS_MDS 0x04
#define MGS_ITIME 0x05
/* added by DENX */
#define MGS_NETCONS 0x06 /* netconsole */
#define MGS_TFTP 0x07
/* Useful defines for buffer sizes, etc. */
#define HDLC_PKTBUFSRX 32
#define MAX_FRAME_LENGTH 1500 /* ethernet frame size */
/* 14 + 28 */
#define INET_HDR_SIZE (ETHER_HDR_SIZE + IP_HDR_SIZE)
#define INET_HDR_ALIGN (((INET_HDR_SIZE + PKTALIGN - 1) / PKTALIGN) * PKTALIGN)
/* INET_HDR_SIZE is stripped off */
#define PKT_MAXBLR_SIZE (MAX_FRAME_LENGTH + INET_HDR_ALIGN)
/*
* It is too slow to read always the port numbers and IP addresses from the
* string variables.
* cachedNumbers is meant to cache it.
* THIS IS ONLY A SPEED IMPROVEMENT!
*/
enum {
IP_ADDR = 0, /* getenv_IPaddr("serverip"); */
IP_SERVER, /* getenv_IPaddr("ipaddr"); */
TFTP_SRC_PORT, /* simple_strtol(getenv("tftpsrcp"), NULL, 10); */
TFTP_DST_PORT, /* simple_strtol(getenv("tftpdstp"), NULL, 10); */
NETCONS_PORT, /* simple_strtol(getenv("ncip"), NULL, 10); */
CACHEDNUMBERS
};
#define WELL_KNOWN_PORT 69 /* Well known TFTP port # */
/* define this to create a test commend (htest) */
#undef TEST_IT
#ifdef TEST_IT
/* have to save a copy of the eth_device for the test command's use */
struct eth_device *seth;
#endif
/* define this for outputting of received packets */
#undef TEST_RX
/* define this for outputting of packets being sent */
#undef TEST_TX
#endif /* _KEYMILE_HDLC_ENET_H_ */
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