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1.1 root 1: /*
2: * Copyright (c) 1989 The Regents of the University of California.
3: * All rights reserved.
4: *
5: * This code is derived from software contributed to Berkeley by
6: * Excelan Inc.
7: *
8: * Redistribution and use in source and binary forms are permitted
9: * provided that the above copyright notice and this paragraph are
10: * duplicated in all such forms and that any documentation,
11: * advertising materials, and other materials related to such
12: * distribution and use acknowledge that the software was developed
13: * by the University of California, Berkeley. The name of the
14: * University may not be used to endorse or promote products derived
15: * from this software without specific prior written permission.
16: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
19: *
20: * @(#)if_exreg.h 7.2 (Berkeley) 4/22/89
21: */
22:
23: struct exdevice {
24: ushort ex_porta; /* write on porta resets EXOS */
25: ushort ex_portb; /* write on portb interrupts EXOS */
26: };
27:
28: /* EXOS I/O PORT A write definitions */
29: #define EX_RESET 0 /* value doesn't really matter... */
30:
31: /* EXOS I/O PORT B write definitions */
32: #define EX_NTRUPT 0
33:
34: /* EXOS I/O PORT B read definitions */
35: #define EX_TESTOK 1 /* set when self-diagnostics passed */
36: #define EX_UNREADY (1<<3) /* set until EXOS ready to read from B */
37:
38: /* message buffer status field definitions */
39: #define MH_OWNER 1 /* mask for status bit for owner */
40: #define MH_HOST 0 /* if 0, the host owns the buffer */
41: #define MH_EXOS 1 /* if 1, the EXOS owns the buffer */
42:
43: /* EXOS Link Level request codes */
44: #define LLTRANSMIT 0xC /* send a packet */
45: #define LLRTRANSMIT 0xE /* send a packet, and self-receive */
46: #define LLRECEIVE 0xD /* receive a packet */
47: #define LLNET_MODE 0x8 /* read/write mode control objects */
48: #define LLNET_ADDRS 0x9 /* read/write receive address slots */
49: #define LLNET_RECV 0xA /* read/alter receive slot enable bit */
50: #define LLNET_STSTCS 0xB /* read/reset network statistics objects */
51:
52: /* Link Level return codes common to all requests */
53: #define LL_OK 0 /* successful completion */
54: #define LLX_MODE 0xA1 /* EXOS not in link level mode (impossible) */
55:
56: /* LLTRANSMIT unique return codes */
57: #define LLXM_1RTRY 0x1 /* successful xmission, 1 retry */
58: #define LLXM_RTRYS 0x2 /* successful xmission, more than 1 retry */
59: #define LLXM_NSQE 0x8 /* successful xmission, no SQE TEST signal */
60: #define LLXM_CLSN 0x10 /* xmission failed, excess retries */
61: #define LLXM_NCS 0x20 /* xmission failed, no carrier sense */
62: #define LLXM_LNGTH 0x40 /* xmission failed, bad packet length */
63: #define XMIT_BITS "\7\7LENGTH\6CARRIER\5XCLSNS\4SQETST"
64: /*#define LLXM_ERROR (LLXM_NSQE|LLXM_CLSN|LLXM_NCS|LLXM_LNGTH)*/
65: #define LLXM_ERROR (LLXM_CLSN|LLXM_NCS|LLXM_LNGTH)
66:
67: /* LLRECEIVE unique return codes */
68: #define LLRC_TRUNC 0x4 /* pkt received, but truncated to fit buffer */
69: #define LLRC_ALIGN 0x10 /* pkt received, but with alignment error */
70: #define LLRC_CRC 0x20 /* pkt received, but with CRC error */
71: #define LLRC_BUFLEN 0x40 /* no pkt received, buffer less than 64 bytes */
72: /* this should never happen here */
73: #define RECV_BITS "\7\7BUFLEN\6CRC\5ALIGN\3TRUNC"
74:
75: /* LLNET_ADDRS unique return codes */
76: #define LLNA_BADSLOT 0xD1 /* slot doesn't exist or can't be accessed */
77: #define LLNA_BADADDR 0xD3 /* invalid address for designated slot */
78:
79: /* LLNET_RECV unique return codes */
80: #define LLNR_BADSLOT 0xD1 /* slot doesn't exist or can't be accessed */
81: #define LLNR_BADADDR 0xD2 /* designated slot was empty */
82:
83: /* address slot object indices */
84: #define NULLSLOT 0 /* the null slot */
85: #define MINMCSLOT 1 /* minimum multicast slot index */
86: #define MAXMCSLOT 8 /* default maximum multicast slot index */
87: #define PHYSSLOT 253 /* physical slot index */
88: #define UNVRSSLOT 254 /* universal slot index */
89: #define BROADSLOT 255 /* broadcast slot index */
90:
91: /* request mask bit definitions */
92: #define WRITE_OBJ 1 /* write the object */
93: #define READ_OBJ 2 /* read the object */
94: #define ENABLE_RCV 4 /* enable reception on designated slot */
95:
96: /* NET_MODE options mask bit definitions */
97: #define OPT_ALIGN 0x10 /* receive packets with alignment errors */
98: #define OPT_CRC 0x20 /* receive packets with CRC errors */
99: #define OPT_DSABLE 0x80 /* disconnect controller hardware */
100:
101: /* NET_MODE mode field value definitions */
102: #define MODE_OFF 0 /* stop transmission and reception */
103: #define MODE_PERF 1 /* perfect multicast address filtering */
104: #define MODE_HW 2 /* hardware-only multicast address filtering */
105: #define MODE_PROM 3 /* promiscuous reception */
106:
107: #define NFRAGMENTS 8 /* number fragments that the EXOS will scatter/gather */
108: #define EXMAXRBUF 1518 /* per EXOS 202 manual 5.3.7 (maybe 1518 would do) */
109:
110: /*
111: * N.B. Structures below are carefully constructed so that
112: * they correspond to the message formats that NX firmware
113: * defines. None of them should contain any compiler-instigated
114: * padding. Be especially careful about VAX C longword alignment!
115: */
116:
117: struct ex_stat {
118: u_long sa_fsent; /* frames sent without errors */
119: u_long sa_xsclsn; /* frames aborted excess collisions */
120: u_long sa_nsqe; /* frames subject to heartbeat failure */
121: u_long sa_undef; /* undefined (TDR on EXOS 101) */
122: u_long sa_frcvd; /* frames received no errors */
123: u_long sa_align; /* frames received alignment error */
124: u_long sa_crc; /* frames received crc error */
125: u_long sa_flost; /* frames lost */
126: };
127:
128: struct buf_blk { /* packet/buffer block descriptor */
129: u_short bb_len; /* length of block, in bytes */
130: struct i86_long {
131: u_short realaddr[2]; /* address of block */
132: } bb_addr;
133: /*
134: * Array above is really a single u_long field.
135: * We kludge its definition to defeat word-alignment.
136: */
137: };
138:
139: struct net_mode { /* read/write mode control objects */
140: /*12*/ u_char nm_rqst; /* request code */
141: /*13*/ u_char nm_rply; /* reply code */
142: /*14*/ u_char nm_mask; /* bit-wise switches for read, write */
143: /*15*/ u_char nm_optn; /* acceptable packet reception errors */
144: /*16*/ u_char nm_mode; /* EXOS filtering mode */
145: /*17*/
146: };
147:
148: struct net_addrs { /* read/write receive address slots */
149: /*12*/ u_char na_rqst; /* request code */
150: /*13*/ u_char na_rply; /* reply code */
151: /*14*/ u_char na_mask; /* bit-wise switches for read, write */
152: /*15*/ u_char na_slot; /* index of address slot */
153: /*16*/ u_char na_addrs[6]; /* address read and/or written */
154: /*22*/
155: };
156:
157: struct net_recv { /* read/alter receive slot enable bit */
158: /*12*/ u_char nr_rqst; /* request code */
159: /*13*/ u_char nr_rply; /* reply code */
160: /*14*/ u_char nr_mask; /* bit-wise switches for read, write */
161: /*15*/ u_char nr_slot; /* index of address slot */
162: /*16*/
163: };
164:
165: struct net_ststcs { /* read/reset network statistics objects */
166: /*12*/ u_char ns_rqst; /* request code */
167: /*13*/ u_char ns_rply; /* reply code */
168: /*14*/ u_char ns_mask; /* bit-wise switches for read, write */
169: /*15*/ u_char ns_rsrv; /* reserved for EXOS */
170: /*16*/ u_short ns_nobj; /* number of objects to work on */
171: /*18*/ u_short ns_xobj; /* index of first object to work on */
172: /*20*/ u_long ns_bufp; /* pointer to statistics buffer */
173: /*24*/
174: };
175:
176: struct enet_xmit { /* send a packet on the Ethernet */
177: /*12*/ u_char et_rqst; /* request code */
178: /*13*/ u_char et_rply; /* reply code */
179: /*14*/ u_char et_slot; /* address slot matching dest address */
180: /*15*/ u_char et_nblock; /* number of blocks composing packet */
181: /*16*/ struct buf_blk et_blks[NFRAGMENTS]; /* array of block descriptors */
182: /*22-64*/
183: };
184:
185: struct enet_recv { /* receive a packet on the Ethernet */
186: /*12*/ u_char er_rqst; /* request code */
187: /*13*/ u_char er_rply; /* reply code */
188: /*14*/ u_char er_slot; /* address slot matching dest address */
189: /*15*/ u_char er_nblock; /* number of blocks composing buffer */
190: /*16*/ struct buf_blk er_blks[NFRAGMENTS]; /* array of block descriptors */
191: /*22-64*/
192: };
193:
194: /* we send requests and receive replys with the EXOS using this structure */
195: struct ex_msg {
196: /*00*/ u_short mb_link; /* address of next message buffer */
197: /*02*/ u_char mb_rsrv; /* reserved for use by EXOS */
198: /*03*/ u_char mb_status; /* used bit-wise for message protocol */
199: /*04*/ u_short mb_length; /* length, in bytes, of the rest */
200: /*06*/ short mb_1rsrv; /* reserved for used by EXOS */
201: /*08*/ struct ifvba *mb_pkb; /* available to user */
202: /*12*/ union mb_all {
203: struct net_mode mb_net_mode;
204: struct net_addrs mb_net_addrs;
205: struct net_recv mb_net_recv;
206: struct net_ststcs mb_net_ststcs;
207: struct enet_xmit mb_enet_xmit;
208: struct enet_recv mb_enet_recv;
209: } mb_all;
210: /* following field is used only by host, not read by board */
211: struct ex_msg *mb_next; /* host's pointer to next message */
212: };
213: #define mb_nm mb_all.mb_net_mode
214: #define mb_na mb_all.mb_net_addrs
215: #define mb_nr mb_all.mb_net_recv
216: #define mb_ns mb_all.mb_net_ststcs
217: #define mb_et mb_all.mb_enet_xmit
218: #define mb_er mb_all.mb_enet_recv
219: #define mb_rqst mb_nm.nm_rqst
220: #define mb_rply mb_nm.nm_rply
221: #define MBDATALEN (sizeof(union mb_all)+6)
222:
223: struct ex_conf {
224: /*00*/ u_short cm_1rsrv; /* reserved, must be 1 */
225: /*02*/ char cm_vc[4]; /* returns ASCII version code */
226: /*06*/ u_char cm_cc; /* returns config completion code */
227: /*07*/ u_char cm_opmode; /* specifies operation mode */
228: /*08*/ u_short cm_dfo; /* specifies host data format option */
229: /*00*/ u_char cm_dcn1; /* reserved, must be 1 */
230: /*11*/ u_char cm_2rsrv[2]; /* reserved, must be 0 */
231: /*13*/ u_char cm_ham; /* specifies host address mode */
232: /*14*/ u_char cm_3rsrv; /* reserved, must be 0 */
233: /*15*/ u_char cm_mapsiz; /* reserved, must be 0 */
234: /*16*/ u_char cm_byteptrn[4]; /* host data format option test pattern */
235: /*20*/ u_short cm_wordptrn[2];
236: /*24*/ u_long cm_lwordptrn;
237: /*28*/ u_char cm_rsrvd[20];
238: /*48*/ u_long cm_mba; /* use 0xFFFFFFFF in link level mode */
239: /*52*/ u_char cm_nproc; /* use 0xFF in link level mode */
240: /*53*/ u_char cm_nmbox; /* use 0xFF in link level mode */
241: /*54*/ u_char cm_nmcast; /* use 0xFF in link level mode */
242: /*55*/ u_char cm_nhost; /* use 1 in link level mode */
243:
244: /* the next five parameters define the request message queue */
245: /*56*/ u_long cm_h2xba; /* base address of message queue */
246: /*60*/ u_short cm_h2xhdr; /* address offset of msg Q header */
247: /*62*/ u_char cm_h2xtyp; /* interrupt type */
248: /*63*/ u_char cm_h2xval; /* interrupt value (not used) */
249: /*64*/ u_short cm_h2xaddr; /* interrupt vector */
250: /*66*/ u_short cm_h2xpad; /* pad out unused portion of vector */
251:
252: /* the next five parameters define the reply message queue */
253: /*68*/ u_long cm_x2hba; /* base address of message queue */
254: /*72*/ u_short cm_x2hhdr; /* address offset of msg Q header */
255: /*74*/ u_char cm_x2htyp; /* interrupt type */
256: /*75*/ u_char cm_x2hval; /* interrupt value (not used) */
257: /*76*/ u_short cm_x2haddr; /* interrupt vector */
258: /*78*/ u_short cm_x2hpad; /* pad out unused portion of vector */
259: /*80*/
260: };
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