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1.1 root 1: /*
2: * Mach Operating System
3: * Copyright (c) 1991,1990,1989 Carnegie Mellon University
4: * All Rights Reserved.
5: *
6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
11: *
12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15: *
16: * Carnegie Mellon requests users of this software to return to
17: *
18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
22: *
23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
25: */
26: /*
27: Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
28: Cupertino, California.
29:
30: All Rights Reserved
31:
32: Permission to use, copy, modify, and distribute this software and
33: its documentation for any purpose and without fee is hereby
34: granted, provided that the above copyright notice appears in all
35: copies and that both the copyright notice and this permission notice
36: appear in supporting documentation, and that the name of Olivetti
37: not be used in advertising or publicity pertaining to distribution
38: of the software without specific, written prior permission.
39:
40: OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
41: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
42: IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
43: CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
44: LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
45: NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
46: WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
47: */
48:
49: /*
50: * Defines for managing the status word of the 82586 cpu. For details see
51: * the Intel LAN Component User's Manual starting at p. 2-14.
52: *
53: */
54:
55: #define SCB_SW_INT 0xf000
56: #define SCB_SW_CX 0x8000 /* CU finished w/ int. bit set */
57: #define SCB_SW_FR 0x4000 /* RU finished receiving a frame */
58: #define SCB_SW_CNA 0x2000 /* CU left active state */
59: #define SCB_SW_RNR 0x1000 /* RU left ready state */
60:
61: /*
62: * Defines for managing the Command Unit Status portion of the 82586
63: * System Control Block.
64: *
65: */
66:
67: #define SCB_CUS_IDLE 0x0000
68: #define SCB_CUS_SUSPND 0x0100
69: #define SCB_CUS_ACTV 0x0200
70:
71: /*
72: * Defines for managing the Receive Unit Status portion of the System
73: * Control Block.
74: *
75: */
76:
77: #define SCB_RUS_IDLE 0x0000
78: #define SCB_RUS_SUSPND 0x0010
79: #define SCB_RUS_NORESRC 0x0020
80: #define SCB_RUS_READY 0x0040
81:
82: /*
83: * Defines that manage portions of the Command Word in the System Control
84: * Block of the 82586. Below are the Interrupt Acknowledge Bits and their
85: * appropriate masks.
86: *
87: */
88:
89: #define SCB_ACK_CX 0x8000
90: #define SCB_ACK_FR 0x4000
91: #define SCB_ACK_CNA 0x2000
92: #define SCB_ACK_RNR 0x1000
93:
94: /*
95: * Defines for managing the Command Unit Control word, and the Receive
96: * Unit Control word. The software RESET bit is also defined.
97: *
98: */
99:
100: #define SCB_CU_STRT 0x0100
101: #define SCB_CU_RSUM 0x0200
102: #define SCB_CU_SUSPND 0x0300
103: #define SCB_CU_ABRT 0x0400
104:
105: #define SCB_RESET 0x0080
106:
107: #define SCB_RU_STRT 0x0010
108: #define SCB_RU_RSUM 0x0020
109: #define SCB_RU_SUSPND 0x0030
110: #define SCB_RU_ABRT 0x0040
111:
112:
113: /*
114: * The following define Action Commands for the 82586 chip.
115: *
116: */
117:
118: #define AC_NOP 0x00
119: #define AC_IASETUP 0x01
120: #define AC_CONFIGURE 0x02
121: #define AC_MCSETUP 0x03
122: #define AC_TRANSMIT 0x04
123: #define AC_TDR 0x05
124: #define AC_DUMP 0x06
125: #define AC_DIAGNOSE 0x07
126:
127:
128: /*
129: * Defines for General Format for Action Commands, both Status Words, and
130: * Command Words.
131: *
132: */
133:
134: #define AC_SW_C 0x8000
135: #define AC_SW_B 0x4000
136: #define AC_SW_OK 0x2000
137: #define AC_SW_A 0x1000
138: #define TC_CARRIER 0x0400
139: #define TC_CLS 0x0200
140: #define TC_DMA 0x0100
141: #define TC_DEFER 0x0080
142: #define TC_SQE 0x0040
143: #define TC_COLLISION 0x0020
144: #define AC_CW_EL 0x8000
145: #define AC_CW_S 0x4000
146: #define AC_CW_I 0x2000
147:
148: /*
149: * Specific defines for the transmit action command.
150: *
151: */
152:
153: #define TBD_SW_EOF 0x8000
154: #define TBD_SW_COUNT 0x3fff
155:
156: /*
157: * Specific defines for the receive frame actions.
158: *
159: */
160:
161: #define RBD_SW_EOF 0x8000
162: #define RBD_SW_COUNT 0x3fff
163:
164: #define RFD_DONE 0x8000
165: #define RFD_BUSY 0x4000
166: #define RFD_OK 0x2000
167: #define RFD_CRC 0x0800
168: #define RFD_ALN 0x0400
169: #define RFD_RSC 0x0200
170: #define RFD_DMA 0x0100
171: #define RFD_SHORT 0x0080
172: #define RFD_EOF 0x0040
173: #define RFD_EL 0x8000
174: #define RFD_SUSP 0x4000
175: /*
176: * 82586 chip specific structure definitions. For details, see the Intel
177: * LAN Components manual.
178: *
179: */
180:
181:
182: typedef struct {
183: u_short scp_sysbus;
184: u_short scp_unused[2];
185: u_short scp_iscp;
186: u_short scp_iscp_base;
187: } scp_t;
188:
189:
190: typedef struct {
191: u_short iscp_busy;
192: u_short iscp_scb_offset;
193: u_short iscp_scb;
194: u_short iscp_scb_base;
195: } iscp_t;
196:
197:
198: typedef struct {
199: u_short scb_status;
200: u_short scb_command;
201: u_short scb_cbl_offset;
202: u_short scb_rfa_offset;
203: u_short scb_crcerrs;
204: u_short scb_alnerrs;
205: u_short scb_rscerrs;
206: u_short scb_ovrnerrs;
207: } scb_t;
208:
209:
210: typedef struct {
211: u_short tbd_offset;
212: u_char dest_addr[6];
213: u_short length;
214: } transmit_t;
215:
216:
217: typedef struct {
218: u_short fifolim_bytecnt;
219: u_short addrlen_mode;
220: u_short linprio_interframe;
221: u_short slot_time;
222: u_short hardware;
223: u_short min_frame_len;
224: } configure_t;
225:
226:
227: typedef struct {
228: u_short ac_status;
229: u_short ac_command;
230: u_short ac_link_offset;
231: union {
232: transmit_t transmit;
233: configure_t configure;
234: u_char iasetup[6];
235: } cmd;
236: } ac_t;
237:
238:
239: typedef struct {
240: u_short act_count;
241: u_short next_tbd_offset;
242: u_short buffer_addr;
243: u_short buffer_base;
244: } tbd_t;
245:
246:
247: typedef struct {
248: u_short status;
249: u_short command;
250: u_short link_offset;
251: u_short rbd_offset;
252: u_char destination[6];
253: u_char source[6];
254: u_short length;
255: } fd_t;
256:
257:
258: typedef struct {
259: u_short status;
260: u_short next_rbd_offset;
261: u_short buffer_addr;
262: u_short buffer_base;
263: u_short size;
264: } rbd_t;
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