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1.1 root 1: /* if_hyreg.h 6.1 83/07/29 */
2:
3: /*
4: * Network Systems Corporation Hyperchannel interface
5: *
6: * supports A410 adapter interfaced via a DEC DR-11B, NSC PI-13 or PI-14
7: * (PI-14 is a PI-13 with different line drivers, software is
8: * identical to a PI-13)
9: *
10: * Written by Steve Glaser, Tektronix Inc., July 1982
11: *
12: * NOTE:
13: *
14: * DR11B code has not been fully checked out with 4.1a.
15: * The first adapters at Tek came with DR11Bs, and the code once worked,
16: * but those have been upgraded to PI-13s.
17: */
18: #define PI13 1 /* PI13 vs. DR11B device depandant code */
19: #ifndef HYLOG
20: #define HYLOG 1 /* enable logging of errors */
21: #endif
22:
23: /*
24: * Structure of a HYPERchannel adapter header
25: */
26: struct hy_hdr {
27: short hyh_ctl; /* control */
28: short hyh_access; /* access code */
29: union { /* to/from addresses */
30: short hyh_addr; /* full address */
31: char hyh_baddr[2]; /* adapter/port number from address */
32: } hyhu_to, hyhu_from;
33: #define hyh_to hyhu_to.hyh_addr
34: #define hyh_from hyhu_from.hyh_addr
35: #define hyh_to_adapter hyhu_to.hyh_baddr[0]
36: #define hyh_to_port hyhu_to.hyh_baddr[1]
37: #define hyh_from_adapter hyhu_from.hyh_baddr[0]
38: #define hyh_from_port hyhu_from.hyh_baddr[1]
39: short hyh_param; /* parameter (for loopback) */
40: char hyh_type; /* record type */
41: char hyh_off; /* offset from end of hy_hdr to ip data */
42: };
43:
44: /*
45: * Structure of a HYPERchannel message header (from software)
46: */
47: struct hym_data {
48: short hymd_mplen; /* message proper length, if associated data */
49: };
50:
51: struct hym_hdr {
52: struct hym_data hym_d;
53: #define hym_mplen hym_d.hymd_mplen
54: struct hy_hdr hym_hdr; /* hardware header, MUST BE LAST */
55: };
56:
57: /*
58: * HYPERchannel header word control bits
59: */
60: #define H_XTRUNKS 0x00F0 /* transmit trunks */
61: #define H_RTRUNKS 0x000F /* remote trunks to transmit on for loopback */
62: #define H_ASSOC 0x0100 /* has associated data */
63: #define H_LOOPBK 0x00FF /* loopback command */
64:
65: /*
66: * Structure of Statistics Record (counters)
67: */
68: struct hy_stat {
69: u_long hyc_msgcnt; /* # messages transmitted */
70: u_long hyc_dbcnt; /* # data buffers transmitted */
71: u_long hyc_tbusy; /* # available trunks busy */
72: u_long hyc_hwret; /* # hardware retransmits */
73: u_long hyc_crcbad; /* # crc errors on trunk */
74: u_long hyc_mcret; /* # microcode retransmits */
75: u_long hyc_tdabort; /* # trunk driver aborts */
76: u_char hyc_atype[3]; /* adapter type and revision level */
77: u_char hyc_uaddr; /* adapter unit number */
78: };
79:
80: /*
81: * Structure of the Status Record
82: */
83: struct hy_status {
84: u_char hys_gen_status; /* general status byte */
85: u_char hys_last_fcn; /* last function code issued */
86: u_char hys_resp_trunk; /* trunk response byte */
87: u_char hys_status_trunk; /* trunk status byte */
88: u_char hys_recd_resp; /* recieved response byte */
89: u_char hys_error; /* error code */
90: u_char hys_caddr; /* compressed addr of 1st msg on chain */
91: u_char hys_pad; /* not used */
92: };
93:
94: /*
95: * Get port number from status record
96: */
97: #define PORTNUM(p) (((p)->hys_gen_status >> 6) & 0x03)
98:
99: /*
100: * The HYPERchannel driver sends and receives messages formatted:
101: *
102: * +---------------------------------------+ ---
103: * | | /|\
104: * | HYPERchannel adapter header (hy_hdr) | |
105: * | | |
106: * +---------------------------------------+ |
107: * | | |
108: * | Internet Protocol header (ip) | message proper
109: * | | (64 bytes max)
110: * +---------------------------------------+ |
111: * | | |
112: * | TCP header + user data | |
113: * | (if it all fits here) | |
114: * | | \|/
115: * +---------------------------------------+ ---
116: *
117: * +---------------------------------------+ ---
118: * | | /|\
119: * | | |
120: * | TCP header + user data | associated data
121: * | | |
122: * | | \|/
123: * +---------------------------------------+ ---
124: *
125: * If all of the datagram will fit in the message proper (including
126: * the TCP header and user data) the entire datagram is passed in
127: * the message proper and the associated data feature of the HYPERchannel
128: * is not used.
129: *
130: * The mapping from internet addresses to HYPERchannel addresses is:
131: *
132: * 0 7 8 15 16 31
133: * +---------+---------+-----------------------+
134: * | network | special | HYPERchannel address |
135: * +---------+---------+-----------------------+
136: *
137: * |<------------ internet address ----------->|
138: *
139: * The hyperchannel address is decoded as follows:
140: *
141: * 0 7 8 13 14 15
142: * +-------------------+----------------+------+
143: * | adapter number | zero | port |
144: * +-------------------+----------------+------+
145: *
146: * The low 2 bits are port number (interpreted by hyperchannel hardware).
147: *
148: * The encoding of special bits is:
149: *
150: * 00 normal packet
151: *
152: * 01 loop this packet back to the sender at the
153: * specified adapter (ip header source/destination addresses
154: * swapped before sending, command bits added to tell the
155: * remote HYPERchannel adapter debug & performance studies]
156: * this code acts like 02 (below) if the ip destination (before
157: * any swapping) and the destination address don't match (e.g.
158: * this packet is being routed through a gateway)
159: *
160: * 02 loop this packet back to the sender at the
161: * specified adapter, but go through the specified adapter's
162: * IP. This is for testing IP's store and forward mechanism.
163: *
164: * other undefined, currently treated as normal packet
165: *
166: */
167: #define MPSIZE 64 /* "Message Proper" size */
168: #define MAXRETRY 4
169:
170: /*
171: * Device registers
172: */
173: struct hydevice {
174: short hyd_wcr; /* word count (negated) */
175: u_short hyd_bar; /* bus address bits 15-0 */
176: u_short hyd_csr; /* control and status */
177: u_short hyd_dbuf; /* data buffer */
178: };
179:
180: /*
181: * CSR bit layout
182: */
183: #define S_ERROR 0100000 /* error */
184: #define S_NEX 0040000 /* non-existent memory error */
185: #define S_ATTN 0020000 /* attn (always zero) */
186: #ifdef PI13
187: #define S_STKINTR 0010000 /* stacked interrupt */
188: #else
189: #define S_MAINT 0010000 /* maintenance (not used) */
190: #endif
191: #define S_A 0004000 /* device status A (recieve data available) */
192: #define S_B 0002000 /* device status B (normal termination) */
193: #define S_C 0001000 /* device status C (abnormal termination) */
194: #ifdef PI13
195: #define S_POWEROFF 0000400 /* power off indicator */
196: #else
197: #define S_CYCLE 0000400 /* cycle (not used) */
198: #endif
199: #define S_READY 0000200 /* ready */
200: #define S_IE 0000100 /* interrupt enable */
201: #define S_XBA 0000060 /* bus address bit bits 17 and 16 */
202: #define S_CLRINT 0000014 /* clear stacked interrupt */
203: #define S_IATTN 0000010 /* interrupt on attention only */
204: #define S_WC 0000004 /* interrupt on word count == 0 only */
205: #define S_IATTNWC 0000000 /* interrupt on word count == 0 and attention */
206: #define S_BURST 0000002 /* burst mode DMA (not used) */
207: #define S_GO 0000001 /* go */
208:
209: #define XBASHIFT 12
210:
211: #define HY_CSR_BITS "\20\20ERROR\17NEX\16ATTN\15STKINTR\14RECV_DATA\13NORMAL\12ABNORMAL\11POWER\10READY\07IENABLE\06XBA17\05XBA16\04IATTN\03IWC\02BURST\01GO"
212:
213: /*
214: * PI13 status conditions
215: */
216: #define HYS_RECVDATA(x) (((x)->hyd_csr & S_A) != 0) /* get adapter data */
217: #define HYS_NORMAL(x) (((x)->hyd_csr & S_B) != 0) /* done normally */
218: #define HYS_ABNORMAL(x) (((x)->hyd_csr & S_C) != 0) /* done abnormally */
219: #define HYS_ERROR(x) (((x)->hyd_csr & S_ERROR) != 0) /* error condition */
220: #define HYS_DONE(x) (((x)->hyd_csr & (S_ERROR|S_B|S_C)) != 0)
221:
222: /*
223: * Function Codes for the Hyperchannel Adapter
224: * The codes are offset so they can be "or"ed into
225: * the reg data buffer
226: */
227: #define HYF_XMITMSG 0x04 /* transmit message */
228: #define HYF_XMITDATA 0x08 /* transmit associated data */
229: #define HYF_XMITLSTDATA 0x0C /* transmit last associated data */
230: #define HYF_XMITLOCMSG 0x10 /* transmit local message */
231: #define HYF_INPUTMSG 0x24 /* input message proper */
232: #define HYF_INPUTDATA 0x28 /* input assiciated data */
233: #define HYF_STATUS 0x40 /* request status */
234: #define HYF_DUMPREGS 0x50 /* dump extention registers */
235: #define HYF_MARKP0 0x60 /* mark down port 0 */
236: #define HYF_MARKP1 0x64 /* mark down port 1 */
237: #define HYF_MARKP2 0x68 /* mark down port 2 */
238: #define HYF_MARKP3 0x6C /* mark down port 3 */
239: #define HYF_MP0RR 0x70 /* mark down port 0 and reroute messages */
240: #define HYF_MP1RR 0x74 /* mark down port 1 and reroute messages */
241: #define HYF_MP2RR 0x78 /* mark down port 2 and reroute messages */
242: #define HYF_MP3RR 0x7C /* mark down port 3 and reroute messages */
243: #define HYF_RSTATS 0xA0 /* read statistics */
244: #define HYF_RCSTATS 0xA4 /* read and clear statistics */
245: #define HYF_SETTEST 0xC0 /* enable test operations *set test mode) */
246: #define HYF_SADDR_LEN 0xC4 /* test mode: set address and length */
247: #define HYF_WBUFF 0xC8 /* test mode: write buffer */
248: #define HYF_RBUFF 0xCC /* test mode: read buffer */
249: #define HYF_CLRADAPTER 0xE0 /* clear adapter */
250: #define HYF_END_OP 0xE4 /* end operation */
251: #define HYF_CLRWFMSG 0xE6 /* clear wait for mwssage */
252: #define HYF_WAITFORMSG 0xE8 /* wait for message */
253:
254: /*
255: * Hyperchannel record types
256: */
257: #define HYLINK_IP 0 /* Internet Protocol Packet */
258:
259: #ifdef HYLOG
260: #define HYL_SIZE 16*1024
261: struct hy_log {
262: struct hy_log *hyl_self;
263: u_char hyl_enable; /* logging enabled? */
264: u_char hyl_onerr; /* state to enter on error */
265: u_char *hyl_eptr; /* &hy_log.hyl_buf[HYL_SIZE] */
266: u_char *hyl_ptr; /* pointer into hyl_buf */
267: u_char hyl_buf[HYL_SIZE]; /* log buffer space */
268: };
269:
270: #define HYL_NOP 0
271: #define HYL_UP 1 /* markup */
272: #define HYL_STATUS 2 /* status results (struct hy_status) */
273: #define HYL_STATISTICS 3 /* statistics (struct hy_stat) */
274: #define HYL_XMIT 4 /* packed being send (struct hym_hdr) */
275: #define HYL_RECV 5 /* recieved packet (short len; struct hy_hdr) */
276: #define HYL_CMD 6 /* cmd issued (uchar cmd, state; short count) */
277: #define HYL_INT 7 /* interrupt (short csr, wcr) */
278:
279: #define HYL_DISABLED 0 /* logging disabled */
280: #define HYL_CONTINUOUS 1 /* continuous logging */
281: #define HYL_CAUGHT1 2 /* one buffer full captured */
282: #define HYL_CATCH1 3 /* one buffer full being captured */
283: #define HYL_CAUGHTSTATUS 4 /* one buffer of status captured */
284: #define HYL_CATCHSTATUS 5 /* one buffer fill of status being captured */
285:
286: #ifdef KERNEL
287: struct hy_log hy_log;
288: #endif
289: #endif
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