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