diff options
Diffstat (limited to 'board/keymile/common/keymile_hdlc_enet.h')
| -rw-r--r-- | board/keymile/common/keymile_hdlc_enet.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/board/keymile/common/keymile_hdlc_enet.h b/board/keymile/common/keymile_hdlc_enet.h new file mode 100644 index 0000000000..965bd5a4b0 --- /dev/null +++ b/board/keymile/common/keymile_hdlc_enet.h @@ -0,0 +1,129 @@ +/* + * (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_ */ |