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wdenk2d966952002-10-31 22:12:35 +00001/*
2 * LiMon Monitor (LiMon) - Network.
3 *
4 * Copyright 1994 - 2000 Neil Russell.
5 * (See License)
6 *
7 *
8 * History
9 * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added
10 */
11
12#ifndef __NET_H__
13#define __NET_H__
14
wdenk71f95112003-06-15 22:40:42 +000015#if defined(CONFIG_8xx)
wdenk2d966952002-10-31 22:12:35 +000016#include <commproc.h>
wdenk71f95112003-06-15 22:40:42 +000017# if !defined(CONFIG_NET_MULTI)
18# if defined(FEC_ENET) || defined(SCC_ENET)
19# define CONFIG_NET_MULTI
20# endif
21# endif
22#endif /* CONFIG_8xx */
wdenkaacf9a42003-01-17 16:27:01 +000023
wdenkcbd8a352004-02-24 02:00:03 +000024#if defined(CONFIG_MPC5xxx)
wdenk77846742003-07-26 08:08:08 +000025# if !defined(CONFIG_NET_MULTI)
wdenkcbd8a352004-02-24 02:00:03 +000026# if defined(CONFIG_MPC5xxx_FEC)
wdenk77846742003-07-26 08:08:08 +000027# define CONFIG_NET_MULTI
28# endif
29# endif
wdenkcbd8a352004-02-24 02:00:03 +000030#endif /* CONFIG_MPC5xxx */
wdenk77846742003-07-26 08:08:08 +000031
wdenk42d1f032003-10-15 23:53:47 +000032#if !defined(CONFIG_NET_MULTI) && (defined(CONFIG_8260) || defined(CONFIG_MPC8560))
wdenkaacf9a42003-01-17 16:27:01 +000033#include <config.h>
34#if defined(CONFIG_ETHER_ON_FCC)
35#if defined(CONFIG_ETHER_ON_SCC)
36#error "Ethernet not correctly defined"
37#endif /* CONFIG_ETHER_ON_SCC */
38#define CONFIG_NET_MULTI
39#if (CONFIG_ETHER_INDEX == 1)
40#define CONFIG_ETHER_ON_FCC1
41# define CFG_CMXFCR_MASK1 CFG_CMXFCR_MASK
42# define CFG_CMXFCR_VALUE1 CFG_CMXFCR_VALUE
43#elif (CONFIG_ETHER_INDEX == 2)
44#define CONFIG_ETHER_ON_FCC2
45# define CFG_CMXFCR_MASK2 CFG_CMXFCR_MASK
46# define CFG_CMXFCR_VALUE2 CFG_CMXFCR_VALUE
47#elif (CONFIG_ETHER_INDEX == 3)
48#define CONFIG_ETHER_ON_FCC3
49# define CFG_CMXFCR_MASK3 CFG_CMXFCR_MASK
50# define CFG_CMXFCR_VALUE3 CFG_CMXFCR_VALUE
51#endif /* CONFIG_ETHER_INDEX */
52#endif /* CONFIG_ETHER_ON_FCC */
53#endif /* !CONFIG_NET_MULTI && CONFIG_8260 */
54
wdenk2d966952002-10-31 22:12:35 +000055#include <asm/byteorder.h> /* for nton* / ntoh* stuff */
56
57
58/*
59 * The number of receive packet buffers, and the required packet buffer
60 * alignment in memory.
61 *
62 */
63
stroesec6028832003-06-05 15:38:29 +000064#ifdef CFG_RX_ETH_BUFFER
65# define PKTBUFSRX CFG_RX_ETH_BUFFER
wdenk1d0350e2002-11-11 21:14:20 +000066#else
stroesec6028832003-06-05 15:38:29 +000067# define PKTBUFSRX 4
wdenk1d0350e2002-11-11 21:14:20 +000068#endif
69
wdenk2d966952002-10-31 22:12:35 +000070#define PKTALIGN 32
71
72typedef ulong IPaddr_t;
73
74
wdenk2d966952002-10-31 22:12:35 +000075/*
76 * The current receive packet handler. Called with a pointer to the
77 * application packet, and a protocol type (PORT_BOOTPC or PORT_TFTP).
78 * All other packets are dealt with without calling the handler.
79 */
80typedef void rxhand_f(uchar *, unsigned, unsigned, unsigned);
81
82/*
83 * A timeout handler. Called after time interval has expired.
84 */
85typedef void thand_f(void);
86
wdenk2d966952002-10-31 22:12:35 +000087#define NAMESIZE 16
88
89enum eth_state_t {
90 ETH_STATE_INIT,
91 ETH_STATE_PASSIVE,
92 ETH_STATE_ACTIVE
93};
94
95struct eth_device {
96 char name[NAMESIZE];
97 unsigned char enetaddr[6];
98 int iobase;
99 int state;
100
101 int (*init) (struct eth_device*, bd_t*);
102 int (*send) (struct eth_device*, volatile void* pachet, int length);
103 int (*recv) (struct eth_device*);
104 void (*halt) (struct eth_device*);
105
106 struct eth_device *next;
107 void *priv;
108};
109
110extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */
111extern int eth_register(struct eth_device* dev);/* Register network device */
112extern void eth_try_another(int first_restart); /* Change the device */
wdenka3d991b2004-04-15 21:48:45 +0000113#ifdef CONFIG_NET_MULTI
114extern void eth_set_current(void); /* set nterface to ethcur var. */
115#endif
wdenk2d966952002-10-31 22:12:35 +0000116extern struct eth_device *eth_get_dev(void); /* get the current device MAC */
wdenka3d991b2004-04-15 21:48:45 +0000117extern int eth_get_dev_index (void); /* get the device index */
wdenk2d966952002-10-31 22:12:35 +0000118extern void eth_set_enetaddr(int num, char* a); /* Set new MAC address */
wdenk2d966952002-10-31 22:12:35 +0000119
120extern int eth_init(bd_t *bis); /* Initialize the device */
121extern int eth_send(volatile void *packet, int length); /* Send a packet */
122extern int eth_rx(void); /* Check for received packets */
123extern void eth_halt(void); /* stop SCC */
wdenk5bb226e2003-11-17 21:14:37 +0000124extern char *eth_get_name(void); /* get name of current device */
wdenk2d966952002-10-31 22:12:35 +0000125
126
127/**********************************************************************/
128/*
129 * Protocol headers.
130 */
131
132/*
133 * Ethernet header
134 */
135typedef struct {
136 uchar et_dest[6]; /* Destination node */
137 uchar et_src[6]; /* Source node */
138 ushort et_protlen; /* Protocol or length */
139 uchar et_dsap; /* 802 DSAP */
140 uchar et_ssap; /* 802 SSAP */
141 uchar et_ctl; /* 802 control */
142 uchar et_snap1; /* SNAP */
143 uchar et_snap2;
144 uchar et_snap3;
145 ushort et_prot; /* 802 protocol */
146} Ethernet_t;
147
148#define ETHER_HDR_SIZE 14 /* Ethernet header size */
149#define E802_HDR_SIZE 22 /* 802 ethernet header size */
wdenka3d991b2004-04-15 21:48:45 +0000150
151/*
152 * Ethernet header
153 */
154typedef struct {
155 uchar vet_dest[6]; /* Destination node */
156 uchar vet_src[6]; /* Source node */
157 ushort vet_vlan_type; /* PROT_VLAN */
158 ushort vet_tag; /* TAG of VLAN */
159 ushort vet_type; /* protocol type */
160} VLAN_Ethernet_t;
161
162#define VLAN_ETHER_HDR_SIZE 18 /* VLAN Ethernet header size */
163
wdenk2d966952002-10-31 22:12:35 +0000164#define PROT_IP 0x0800 /* IP protocol */
165#define PROT_ARP 0x0806 /* IP ARP protocol */
166#define PROT_RARP 0x8035 /* IP ARP protocol */
wdenka3d991b2004-04-15 21:48:45 +0000167#define PROT_VLAN 0x8100 /* IEEE 802.1q protocol */
wdenk2d966952002-10-31 22:12:35 +0000168
169#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */
170#define IPPROTO_UDP 17 /* User Datagram Protocol */
171
172/*
173 * Internet Protocol (IP) header.
174 */
175typedef struct {
176 uchar ip_hl_v; /* header length and version */
177 uchar ip_tos; /* type of service */
178 ushort ip_len; /* total length */
179 ushort ip_id; /* identification */
180 ushort ip_off; /* fragment offset field */
181 uchar ip_ttl; /* time to live */
182 uchar ip_p; /* protocol */
183 ushort ip_sum; /* checksum */
184 IPaddr_t ip_src; /* Source IP address */
185 IPaddr_t ip_dst; /* Destination IP address */
186 ushort udp_src; /* UDP source port */
187 ushort udp_dst; /* UDP destination port */
188 ushort udp_len; /* Length of UDP packet */
189 ushort udp_xsum; /* Checksum */
190} IP_t;
191
192#define IP_HDR_SIZE_NO_UDP (sizeof (IP_t) - 8)
193#define IP_HDR_SIZE (sizeof (IP_t))
194
195
196/*
197 * Address Resolution Protocol (ARP) header.
198 */
199typedef struct
200{
201 ushort ar_hrd; /* Format of hardware address */
202# define ARP_ETHER 1 /* Ethernet hardware address */
203 ushort ar_pro; /* Format of protocol address */
204 uchar ar_hln; /* Length of hardware address */
205 uchar ar_pln; /* Length of protocol address */
206 ushort ar_op; /* Operation */
207# define ARPOP_REQUEST 1 /* Request to resolve address */
208# define ARPOP_REPLY 2 /* Response to previous request */
209
210# define RARPOP_REQUEST 3 /* Request to resolve address */
211# define RARPOP_REPLY 4 /* Response to previous request */
212
213 /*
wdenk8bde7f72003-06-27 21:31:46 +0000214 * The remaining fields are variable in size, according to
215 * the sizes above, and are defined as appropriate for
216 * specific hardware/protocol combinations.
wdenk2d966952002-10-31 22:12:35 +0000217 */
218 uchar ar_data[0];
219#if 0
220 uchar ar_sha[]; /* Sender hardware address */
221 uchar ar_spa[]; /* Sender protocol address */
222 uchar ar_tha[]; /* Target hardware address */
223 uchar ar_tpa[]; /* Target protocol address */
224#endif /* 0 */
225} ARP_t;
226
227#define ARP_HDR_SIZE (8+20) /* Size assuming ethernet */
228
229/*
230 * ICMP stuff (just enough to handle (host) redirect messages)
231 */
wdenk73a8b272003-06-05 19:27:42 +0000232#define ICMP_ECHO_REPLY 0 /* Echo reply */
wdenk2d966952002-10-31 22:12:35 +0000233#define ICMP_REDIRECT 5 /* Redirect (change route) */
wdenk73a8b272003-06-05 19:27:42 +0000234#define ICMP_ECHO_REQUEST 8 /* Echo request */
wdenk2d966952002-10-31 22:12:35 +0000235
236/* Codes for REDIRECT. */
237#define ICMP_REDIR_NET 0 /* Redirect Net */
238#define ICMP_REDIR_HOST 1 /* Redirect Host */
239
240typedef struct icmphdr {
241 uchar type;
242 uchar code;
243 ushort checksum;
244 union {
245 struct {
246 ushort id;
247 ushort sequence;
248 } echo;
249 ulong gateway;
250 struct {
251 ushort __unused;
252 ushort mtu;
253 } frag;
254 } un;
255} ICMP_t;
256
257
wdenk2d966952002-10-31 22:12:35 +0000258/*
259 * Maximum packet size; used to allocate packet storage.
260 * TFTP packets can be 524 bytes + IP header + ethernet header.
261 * Lets be conservative, and go for 38 * 16. (Must also be
262 * a multiple of 32 bytes).
263 */
264/*
265 * AS.HARNOIS : Better to set PKTSIZE to maximum size because
266 * traffic type is not always controlled
267 * maximum packet size = 1518
268 * maximum packet size and multiple of 32 bytes = 1536
269 */
270#define PKTSIZE 1518
271#define PKTSIZE_ALIGN 1536
272/*#define PKTSIZE 608*/
273
274/*
275 * Maximum receive ring size; that is, the number of packets
276 * we can buffer before overflow happens. Basically, this just
277 * needs to be enough to prevent a packet being discarded while
278 * we are processing the previous one.
279 */
280#define RINGSZ 4
281#define RINGSZ_LOG2 2
282
283/**********************************************************************/
284/*
285 * Globals.
286 *
287 * Note:
288 *
289 * All variables of type IPaddr_t are stored in NETWORK byte order
290 * (big endian).
291 */
292
293/* net.c */
294/** BOOTP EXTENTIONS **/
295extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
296extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
297extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
stroesefe389a82003-08-28 14:17:32 +0000298#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
299extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
300#endif
wdenk2d966952002-10-31 22:12:35 +0000301extern char NetOurNISDomain[32]; /* Our NIS domain */
302extern char NetOurHostName[32]; /* Our hostname */
303extern char NetOurRootPath[64]; /* Our root path */
304extern ushort NetBootFileSize; /* Our boot file size in blocks */
305/** END OF BOOTP EXTENTIONS **/
306extern ulong NetBootFileXferSize; /* size of bootfile in bytes */
307extern uchar NetOurEther[6]; /* Our ethernet address */
308extern uchar NetServerEther[6]; /* Boot server enet address */
309extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
310extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
311extern volatile uchar * NetTxPacket; /* THE transmit packet */
312extern volatile uchar * NetRxPackets[PKTBUFSRX];/* Receive packets */
313extern volatile uchar * NetRxPkt; /* Current receive packet */
314extern int NetRxPktLen; /* Current rx packet length */
315extern unsigned NetIPID; /* IP ID (counting) */
316extern uchar NetBcastAddr[6]; /* Ethernet boardcast address */
wdenk68ceb292004-08-02 21:11:11 +0000317extern uchar NetEtherNullAddr[6];
wdenk2d966952002-10-31 22:12:35 +0000318
wdenka3d991b2004-04-15 21:48:45 +0000319#define VLAN_NONE 4095 /* untagged */
320#define VLAN_IDMASK 0x0fff /* mask of valid vlan id */
321extern ushort NetOurVLAN; /* Our VLAN */
322extern ushort NetOurNativeVLAN; /* Our Native VLAN */
323
324extern uchar NetCDPAddr[6]; /* Ethernet CDP address */
325extern ushort CDPNativeVLAN; /* CDP returned native VLAN */
326extern ushort CDPApplianceVLAN; /* CDP returned appliance VLAN */
327
wdenk2d966952002-10-31 22:12:35 +0000328extern int NetState; /* Network loop state */
329#define NETLOOP_CONTINUE 1
330#define NETLOOP_RESTART 2
331#define NETLOOP_SUCCESS 3
332#define NETLOOP_FAIL 4
333
334#ifdef CONFIG_NET_MULTI
335extern int NetRestartWrap; /* Tried all network devices */
336#endif
337
wdenk68ceb292004-08-02 21:11:11 +0000338typedef enum { BOOTP, RARP, ARP, TFTP, DHCP, PING, DNS, NFS, CDP, NETCONS } proto_t;
wdenk2d966952002-10-31 22:12:35 +0000339
340/* from net/net.c */
341extern char BootFile[128]; /* Boot File name */
342
wdenk73a8b272003-06-05 19:27:42 +0000343#if (CONFIG_COMMANDS & CFG_CMD_PING)
344extern IPaddr_t NetPingIP; /* the ip address to ping */
345#endif
346
wdenka3d991b2004-04-15 21:48:45 +0000347#if (CONFIG_COMMANDS & CFG_CMD_CDP)
348/* when CDP completes these hold the return values */
349extern ushort CDPNativeVLAN;
350extern ushort CDPApplianceVLAN;
351#endif
352
wdenk2d966952002-10-31 22:12:35 +0000353/* Initialize the network adapter */
354extern int NetLoop(proto_t);
355
356/* Shutdown adapters and cleanup */
357extern void NetStop(void);
358
359/* Load failed. Start again. */
360extern void NetStartAgain(void);
361
wdenka3d991b2004-04-15 21:48:45 +0000362/* Get size of the ethernet header when we send */
363extern int NetEthHdrSize(void);
364
365/* Set ethernet header; returns the size of the header */
366extern int NetSetEther(volatile uchar *, uchar *, uint);
wdenk2d966952002-10-31 22:12:35 +0000367
368/* Set IP header */
369extern void NetSetIP(volatile uchar *, IPaddr_t, int, int, int);
370
371/* Checksum */
372extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */
373extern uint NetCksum(uchar *, int); /* Calculate the checksum */
374
375/* Set callbacks */
376extern void NetSetHandler(rxhand_f *); /* Set RX packet handler */
377extern void NetSetTimeout(int, thand_f *); /* Set timeout handler */
378
379/* Transmit "NetTxPacket" */
380extern void NetSendPacket(volatile uchar *, int);
381
wdenk73a8b272003-06-05 19:27:42 +0000382/* Transmit UDP packet, performing ARP request if needed */
383extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len);
384
wdenk2d966952002-10-31 22:12:35 +0000385/* Processes a received packet */
386extern void NetReceive(volatile uchar *, int);
387
388/* Print an IP address on the console */
389extern void print_IPaddr (IPaddr_t);
390
391/*
392 * The following functions are a bit ugly, but necessary to deal with
393 * alignment restrictions on ARM.
394 *
395 * We're using inline functions, which had the smallest memory
396 * footprint in our tests.
397 */
398/* return IP *in network byteorder* */
399static inline IPaddr_t NetReadIP(void *from)
400{
401 IPaddr_t ip;
402 memcpy((void*)&ip, from, sizeof(ip));
403 return ip;
404}
405
406/* return ulong *in network byteorder* */
407static inline ulong NetReadLong(ulong *from)
408{
409 ulong l;
410 memcpy((void*)&l, (void*)from, sizeof(l));
411 return l;
412}
413
414/* write IP *in network byteorder* */
415static inline void NetWriteIP(void *to, IPaddr_t ip)
416{
417 memcpy(to, (void*)&ip, sizeof(ip));
418}
419
420/* copy IP */
421static inline void NetCopyIP(void *to, void *from)
422{
423 memcpy(to, from, sizeof(IPaddr_t));
424}
425
426/* copy ulong */
427static inline void NetCopyLong(ulong *to, ulong *from)
428{
429 memcpy((void*)to, (void*)from, sizeof(ulong));
430}
431
432/* Convert an IP address to a string */
433extern void ip_to_string (IPaddr_t x, char *s);
434
wdenk73a8b272003-06-05 19:27:42 +0000435/* Convert a string to ip address */
436extern IPaddr_t string_to_ip(char *s);
437
wdenka3d991b2004-04-15 21:48:45 +0000438/* Convert a VLAN id to a string */
439extern void VLAN_to_string (ushort x, char *s);
440
441/* Convert a string to a vlan id */
442extern ushort string_to_VLAN(char *s);
443
wdenk2d966952002-10-31 22:12:35 +0000444/* read an IP address from a environment variable */
445extern IPaddr_t getenv_IPaddr (char *);
446
wdenka3d991b2004-04-15 21:48:45 +0000447/* read a VLAN id from an environment variable */
448extern ushort getenv_VLAN(char *);
449
wdenk2d966952002-10-31 22:12:35 +0000450/* copy a filename (allow for "..." notation, limit length) */
451extern void copy_filename (uchar *dst, uchar *src, int size);
452
453/**********************************************************************/
454
455#endif /* __NET_H__ */