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; 267