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1.1 root 1: /*
2: * Copyright (c) 1988 Regents of the University of California.
3: * All rights reserved.
4: *
5: * This code is derived from software contributed to Berkeley by
6: * Tektronix Inc.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: *
36: * @(#)if_hyreg.h 7.3 (Berkeley) 6/28/90
37: */
38:
39: /*
40: * Modifications from Berkeley 4.2 BSD
41: * Copyright (c) 1983, Tektronix Inc.
42: * All Rights Reserved
43: */
44:
45: /*
46: * Network Systems Corporation Hyperchannel interface
47: *
48: * supports A410 adapter interfaced via a DEC DR-11B, NSC PI-13 or PI-14
49: * (PI-14 is a PI-13 with different line drivers, software is
50: * identical to a PI-13)
51: *
52: * Written by Steve Glaser, Tektronix Inc., July 1982
53: *
54: * NOTE:
55: *
56: * DR11B code has not been fully checked out with 4.1a.
57: * The first adapters at Tek came with DR11Bs, and the code once worked,
58: * but those have been upgraded to PI-13s.
59: */
60:
61: /*
62: * The HYPERchannel driver sends and receives messages formatted:
63: *
64: * +---------------------------------------+ ---
65: * | | /|\
66: * | HYPERchannel adapter header (hy_hdr) | |
67: * | | |
68: * +---------------------------------------+ |
69: * | | |
70: * | Internet Protocol header (ip) | message proper
71: * | | (64 bytes max)
72: * +---------------------------------------+ |
73: * | | |
74: * | TCP header + user data | |
75: * | (if it all fits here) | |
76: * | | \|/
77: * +---------------------------------------+ ---
78: *
79: * +---------------------------------------+ ---
80: * | | /|\
81: * | | |
82: * | TCP header + user data | associated data
83: * | | |
84: * | | \|/
85: * +---------------------------------------+ ---
86: *
87: * If all of the datagram will fit in the message proper (including
88: * the TCP header and user data) the entire datagram is passed in
89: * the message proper and the associated data feature of the HYPERchannel
90: * is not used.
91: *
92: * The mapping from internet addresses to HYPERchannel addresses is:
93: *
94: * 0 7 8 15 16 31
95: * +---------+---------+-----------------------+
96: * | network | special | HYPERchannel address |
97: * +---------+---------+-----------------------+
98: *
99: * |<------------ internet address ----------->|
100: *
101: * The hyperchannel address is decoded as follows:
102: *
103: * 0 7 8 13 14 15
104: * +-------------------+----------------+------+
105: * | adapter number | zero | port |
106: * +-------------------+----------------+------+
107: *
108: * The low 2 bits are port number (interpreted by hyperchannel hardware).
109: *
110: * The encoding of special bits is:
111: *
112: * 00 normal packet
113: *
114: * 01 loop this packet back to the sender at the
115: * specified adapter (ip header source/destination addresses
116: * swapped before sending, command bits added to tell the
117: * remote HYPERchannel adapter debug & performance studies]
118: * this code acts like 02 (below) if the ip destination (before
119: * any swapping) and the destination address don't match (e.g.
120: * this packet is being routed through a gateway)
121: *
122: * 02 loop this packet back to the sender at the
123: * specified adapter, but go through the specified adapter's
124: * IP. This is for testing IP's store and forward mechanism.
125: *
126: * other undefined, currently treated as normal packet
127: *
128: */
129: #define MPSIZE 64 /* "Message Proper" size */
130: #define MAXRETRY 4
131:
132: /*
133: * Device registers
134: */
135: struct hydevice {
136: short hyd_wcr; /* word count (negated) */
137: u_short hyd_bar; /* bus address bits 15-0 */
138: u_short hyd_csr; /* control and status */
139: u_short hyd_dbuf; /* data buffer */
140: };
141:
142: /*
143: * CSR bit layout
144: */
145: #define S_ERROR 0100000 /* error */
146: #define S_NEX 0040000 /* non-existent memory error */
147: #define S_ATTN 0020000 /* attn (always zero) */
148: #ifdef PI13
149: #define S_STKINTR 0010000 /* stacked interrupt */
150: #else
151: #define S_MAINT 0010000 /* maintenance (not used) */
152: #endif
153: #define S_A 0004000 /* device status A (recieve data available) */
154: #define S_B 0002000 /* device status B (normal termination) */
155: #define S_C 0001000 /* device status C (abnormal termination) */
156: #ifdef PI13
157: #define S_POWEROFF 0000400 /* power off indicator */
158: #else
159: #define S_CYCLE 0000400 /* cycle (not used) */
160: #endif
161: #define S_READY 0000200 /* ready */
162: #define S_IE 0000100 /* interrupt enable */
163: #define S_XBA 0000060 /* bus address bit bits 17 and 16 */
164: #define S_CLRINT 0000014 /* clear stacked interrupt */
165: #define S_IATTN 0000010 /* interrupt on attention only */
166: #define S_WC 0000004 /* interrupt on word count == 0 only */
167: #define S_IATTNWC 0000000 /* interrupt on word count == 0 and attention */
168: #define S_BURST 0000002 /* burst mode DMA (not used) */
169: #define S_GO 0000001 /* go */
170:
171: #define XBASHIFT 12
172:
173: #define HY_CSR_BITS "\20\
174: \20ERROR\17NEX\16ATTN\15STKINTR\14RECV_DATA\13NORMAL\12ABNORMAL\11POWER\
175: \10READY\07IENABLE\06XBA17\05XBA16\04IATTN\03IWC\02BURST\01GO"
176:
177: /*
178: * PI13 status conditions
179: */
180: #define HYS_RECVDATA(x) (((x)->hyd_csr & S_A) != 0) /* get adapter data */
181: #define HYS_NORMAL(x) (((x)->hyd_csr & S_B) != 0) /* done normally */
182: #define HYS_ABNORMAL(x) (((x)->hyd_csr & S_C) != 0) /* done abnormally */
183: #define HYS_ERROR(x) (((x)->hyd_csr & S_ERROR) != 0) /* error condition */
184: #define HYS_DONE(x) (((x)->hyd_csr & (S_ERROR|S_B|S_C)) != 0)
185:
186: /*
187: * Function Codes for the Hyperchannel Adapter
188: * The codes are offset so they can be "or"ed into
189: * the reg data buffer
190: */
191: #define HYF_XMITMSG 0x04 /* transmit message */
192: #define HYF_XMITDATA 0x08 /* transmit associated data */
193: #define HYF_XMITLSTDATA 0x0C /* transmit last associated data */
194: #define HYF_XMITLOCMSG 0x10 /* transmit local message */
195: #define HYF_INPUTMSG 0x24 /* input message proper */
196: #define HYF_INPUTDATA 0x28 /* input assiciated data */
197: #define HYF_STATUS 0x40 /* request status */
198: #define HYF_DUMPREGS 0x50 /* dump extention registers */
199: #define HYF_MARKP0 0x60 /* mark down port 0 */
200: #define HYF_MARKP1 0x64 /* mark down port 1 */
201: #define HYF_MARKP2 0x68 /* mark down port 2 */
202: #define HYF_MARKP3 0x6C /* mark down port 3 */
203: #define HYF_MP0RR 0x70 /* mark down port 0 and reroute messages */
204: #define HYF_MP1RR 0x74 /* mark down port 1 and reroute messages */
205: #define HYF_MP2RR 0x78 /* mark down port 2 and reroute messages */
206: #define HYF_MP3RR 0x7C /* mark down port 3 and reroute messages */
207: #define HYF_RSTATS 0xA0 /* read statistics */
208: #define HYF_RCSTATS 0xA4 /* read and clear statistics */
209: #define HYF_SETTEST 0xC0 /* enable test operations *set test mode) */
210: #define HYF_SADDR_LEN 0xC4 /* test mode: set address and length */
211: #define HYF_WBUFF 0xC8 /* test mode: write buffer */
212: #define HYF_RBUFF 0xCC /* test mode: read buffer */
213: #define HYF_CLRADAPTER 0xE0 /* clear adapter */
214: #define HYF_END_OP 0xE4 /* end operation */
215: #define HYF_CLRWFMSG 0xE6 /* clear wait for mwssage */
216: #define HYF_WAITFORMSG 0xE8 /* wait for message */
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