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u-boot/include/net.h
wdenk 7784674852 * Allow crc32 to be used at address 0x000 
* Provide consistent interface to standalone applications to access
  the 'global_data' structure
  Provide a doc/README.standalone more useful to users/developers.

* Make IceCube MGT5100 FEC driver work
2003-07-26 08:08:08 +00:00

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/*
* LiMon Monitor (LiMon) - Network.
*
* Copyright 1994 - 2000 Neil Russell.
* (See License)
*
*
* History
* 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
*/
#ifndef __NET_H__
#define __NET_H__
#if defined(CONFIG_8xx)
#include <commproc.h>
# if !defined(CONFIG_NET_MULTI)
# if defined(FEC_ENET) || defined(SCC_ENET)
# define CONFIG_NET_MULTI
# endif
# endif
#endif /* CONFIG_8xx */
#if defined(CONFIG_MPC5XXX)
# if !defined(CONFIG_NET_MULTI)
# if defined(CONFIG_MPC5XXX_FEC)
# define CONFIG_NET_MULTI
# endif
# endif
#endif /* CONFIG_MPC5XXX */
#if !defined(CONFIG_NET_MULTI) && defined(CONFIG_8260)
#include <config.h>
#if defined(CONFIG_ETHER_ON_FCC)
#if defined(CONFIG_ETHER_ON_SCC)
#error "Ethernet not correctly defined"
#endif /* CONFIG_ETHER_ON_SCC */
#define CONFIG_NET_MULTI
#if (CONFIG_ETHER_INDEX == 1)
#define CONFIG_ETHER_ON_FCC1
# define CFG_CMXFCR_MASK1 CFG_CMXFCR_MASK
# define CFG_CMXFCR_VALUE1 CFG_CMXFCR_VALUE
#elif (CONFIG_ETHER_INDEX == 2)
#define CONFIG_ETHER_ON_FCC2
# define CFG_CMXFCR_MASK2 CFG_CMXFCR_MASK
# define CFG_CMXFCR_VALUE2 CFG_CMXFCR_VALUE
#elif (CONFIG_ETHER_INDEX == 3)
#define CONFIG_ETHER_ON_FCC3
# define CFG_CMXFCR_MASK3 CFG_CMXFCR_MASK
# define CFG_CMXFCR_VALUE3 CFG_CMXFCR_VALUE
#endif /* CONFIG_ETHER_INDEX */
#endif /* CONFIG_ETHER_ON_FCC */
#endif /* !CONFIG_NET_MULTI && CONFIG_8260 */
#include <asm/byteorder.h> /* for nton* / ntoh* stuff */
/*
* The number of receive packet buffers, and the required packet buffer
* alignment in memory.
*
*/
#ifdef CFG_RX_ETH_BUFFER
# define PKTBUFSRX CFG_RX_ETH_BUFFER
#else
# define PKTBUFSRX 4
#endif
#define PKTALIGN 32
typedef ulong IPaddr_t;
/*
* The current receive packet handler. Called with a pointer to the
* application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
* All other packets are dealt with without calling the handler.
*/
typedef void rxhand_f(uchar *, unsigned, unsigned, unsigned);
/*
* A timeout handler. Called after time interval has expired.
*/
typedef void thand_f(void);
#define NAMESIZE 16
enum eth_state_t {
ETH_STATE_INIT,
ETH_STATE_PASSIVE,
ETH_STATE_ACTIVE
};
struct eth_device {
char name[NAMESIZE];
unsigned char enetaddr[6];
int iobase;
int state;
int (*init) (struct eth_device*, bd_t*);
int (*send) (struct eth_device*, volatile void* pachet, int length);
int (*recv) (struct eth_device*);
void (*halt) (struct eth_device*);
struct eth_device *next;
void *priv;
};
extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
extern int eth_register(struct eth_device* dev);/* Register network device */
extern void eth_try_another(int first_restart); /* Change the device */
extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
extern void eth_set_enetaddr(int num, char* a); /* Set new MAC address */
extern int eth_init(bd_t *bis); /* Initialize the device */
extern int eth_send(volatile void *packet, int length); /* Send a packet */
extern int eth_rx(void); /* Check for received packets */
extern void eth_halt(void); /* stop SCC */
/**********************************************************************/
/*
* Protocol headers.
*/
/*
* Ethernet header
*/
typedef struct {
uchar et_dest[6]; /* Destination node */
uchar et_src[6]; /* Source node */
ushort et_protlen; /* Protocol or length */
uchar et_dsap; /* 802 DSAP */
uchar et_ssap; /* 802 SSAP */
uchar et_ctl; /* 802 control */
uchar et_snap1; /* SNAP */
uchar et_snap2;
uchar et_snap3;
ushort et_prot; /* 802 protocol */
} Ethernet_t;
#define ETHER_HDR_SIZE 14 /* Ethernet header size */
#define E802_HDR_SIZE 22 /* 802 ethernet header size */
#define PROT_IP 0x0800 /* IP protocol */
#define PROT_ARP 0x0806 /* IP ARP protocol */
#define PROT_RARP 0x8035 /* IP ARP protocol */
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
#define IPPROTO_UDP 17 /* User Datagram Protocol */
/*
* Internet Protocol (IP) header.
*/
typedef struct {
uchar ip_hl_v; /* header length and version */
uchar ip_tos; /* type of service */
ushort ip_len; /* total length */
ushort ip_id; /* identification */
ushort ip_off; /* fragment offset field */
uchar ip_ttl; /* time to live */
uchar ip_p; /* protocol */
ushort ip_sum; /* checksum */
IPaddr_t ip_src; /* Source IP address */
IPaddr_t ip_dst; /* Destination IP address */
ushort udp_src; /* UDP source port */
ushort udp_dst; /* UDP destination port */
ushort udp_len; /* Length of UDP packet */
ushort udp_xsum; /* Checksum */
} IP_t;
#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
#define IP_HDR_SIZE (sizeof (IP_t))
/*
* Address Resolution Protocol (ARP) header.
*/
typedef struct
{
ushort ar_hrd; /* Format of hardware address */
# define ARP_ETHER 1 /* Ethernet hardware address */
ushort ar_pro; /* Format of protocol address */
uchar ar_hln; /* Length of hardware address */
uchar ar_pln; /* Length of protocol address */
ushort ar_op; /* Operation */
# define ARPOP_REQUEST 1 /* Request to resolve address */
# define ARPOP_REPLY 2 /* Response to previous request */
# define RARPOP_REQUEST 3 /* Request to resolve address */
# define RARPOP_REPLY 4 /* Response to previous request */
/*
* The remaining fields are variable in size, according to
* the sizes above, and are defined as appropriate for
* specific hardware/protocol combinations.
*/
uchar ar_data[0];
#if 0
uchar ar_sha[]; /* Sender hardware address */
uchar ar_spa[]; /* Sender protocol address */
uchar ar_tha[]; /* Target hardware address */
uchar ar_tpa[]; /* Target protocol address */
#endif /* 0 */
} ARP_t;
#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
/*
* ICMP stuff (just enough to handle (host) redirect messages)
*/
#define ICMP_ECHO_REPLY 0 /* Echo reply */
#define ICMP_REDIRECT 5 /* Redirect (change route) */
#define ICMP_ECHO_REQUEST 8 /* Echo request */
/* Codes for REDIRECT. */
#define ICMP_REDIR_NET 0 /* Redirect Net */
#define ICMP_REDIR_HOST 1 /* Redirect Host */
typedef struct icmphdr {
uchar type;
uchar code;
ushort checksum;
union {
struct {
ushort id;
ushort sequence;
} echo;
ulong gateway;
struct {
ushort __unused;
ushort mtu;
} frag;
} un;
} ICMP_t;
/*
* Maximum packet size; used to allocate packet storage.
* TFTP packets can be 524 bytes + IP header + ethernet header.
* Lets be conservative, and go for 38 * 16. (Must also be
* a multiple of 32 bytes).
*/
/*
* AS.HARNOIS : Better to set PKTSIZE to maximum size because
* traffic type is not always controlled
* maximum packet size = 1518
* maximum packet size and multiple of 32 bytes = 1536
*/
#define PKTSIZE 1518
#define PKTSIZE_ALIGN 1536
/*#define PKTSIZE 608*/
/*
* Maximum receive ring size; that is, the number of packets
* we can buffer before overflow happens. Basically, this just
* needs to be enough to prevent a packet being discarded while
* we are processing the previous one.
*/
#define RINGSZ 4
#define RINGSZ_LOG2 2
/**********************************************************************/
/*
* Globals.
*
* Note:
*
* All variables of type IPaddr_t are stored in NETWORK byte order
* (big endian).
*/
/* net.c */
/** BOOTP EXTENTIONS **/
extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
extern char NetOurNISDomain[32]; /* Our NIS domain */
extern char NetOurHostName[32]; /* Our hostname */
extern char NetOurRootPath[64]; /* Our root path */
extern ushort NetBootFileSize; /* Our boot file size in blocks */
/** END OF BOOTP EXTENTIONS **/
extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
extern uchar NetOurEther[6]; /* Our ethernet address */
extern uchar NetServerEther[6]; /* Boot server enet address */
extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
extern volatile uchar * NetTxPacket; /* THE transmit packet */
extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
extern volatile uchar * NetRxPkt; /* Current receive packet */
extern int NetRxPktLen; /* Current rx packet length */
extern unsigned NetIPID; /* IP ID (counting) */
extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
extern int NetState; /* Network loop state */
#define NETLOOP_CONTINUE 1
#define NETLOOP_RESTART 2
#define NETLOOP_SUCCESS 3
#define NETLOOP_FAIL 4
#ifdef CONFIG_NET_MULTI
extern int NetRestartWrap; /* Tried all network devices */
#endif
typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS } proto_t;
/* from net/net.c */
extern char BootFile[128]; /* Boot File name */
#if (CONFIG_COMMANDS & CFG_CMD_PING)
extern IPaddr_t NetPingIP; /* the ip address to ping */
#endif
/* Initialize the network adapter */
extern int NetLoop(proto_t);
/* Shutdown adapters and cleanup */
extern void NetStop(void);
/* Load failed. Start again. */
extern void NetStartAgain(void);
/* Set ethernet header */
extern void NetSetEther(volatile uchar *, uchar *, uint);
/* Set IP header */
extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
/* Checksum */
extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
extern uint NetCksum(uchar *, int); /* Calculate the checksum */
/* Set callbacks */
extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
extern void NetSetTimeout(int, thand_f *); /* Set timeout handler */
/* Transmit "NetTxPacket" */
extern void NetSendPacket(volatile uchar *, int);
/* Transmit UDP packet, performing ARP request if needed */
extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
/* Processes a received packet */
extern void NetReceive(volatile uchar *, int);
/* Print an IP address on the console */
extern void print_IPaddr (IPaddr_t);
/*
* The following functions are a bit ugly, but necessary to deal with
* alignment restrictions on ARM.
*
* We're using inline functions, which had the smallest memory
* footprint in our tests.
*/
/* return IP *in network byteorder* */
static inline IPaddr_t NetReadIP(void *from)
{
IPaddr_t ip;
memcpy((void*)&ip, from, sizeof(ip));
return ip;
}
/* return ulong *in network byteorder* */
static inline ulong NetReadLong(ulong *from)
{
ulong l;
memcpy((void*)&l, (void*)from, sizeof(l));
return l;
}
/* write IP *in network byteorder* */
static inline void NetWriteIP(void *to, IPaddr_t ip)
{
memcpy(to, (void*)&ip, sizeof(ip));
}
/* copy IP */
static inline void NetCopyIP(void *to, void *from)
{
memcpy(to, from, sizeof(IPaddr_t));
}
/* copy ulong */
static inline void NetCopyLong(ulong *to, ulong *from)
{
memcpy((void*)to, (void*)from, sizeof(ulong));
}
/* Convert an IP address to a string */
extern void ip_to_string (IPaddr_t x, char *s);
/* Convert a string to ip address */
extern IPaddr_t string_to_ip(char *s);
/* read an IP address from a environment variable */
extern IPaddr_t getenv_IPaddr (char *);
/* copy a filename (allow for "..." notation, limit length) */
extern void copy_filename (uchar *dst, uchar *src, int size);
/**********************************************************************/
#endif /* __NET_H__ */
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