1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * %sccs.include.redist.c% 11 * 12 * from: Utah $Hdr: dcmreg.h 1.1 90/07/09$ 13 * 14 * @(#)dcmreg.h 7.4 (Berkeley) 11/04/90 15 */ 16 17 struct dcmdevice { /* host address, only odd bytes addressed */ 18 u_char dcm_pad0; 19 volatile u_char dcm_rsid; /* Reset / ID 0001 */ 20 u_char dcm_pad1; 21 volatile u_char dcm_ic; /* Interrupt control register 0003 */ 22 u_char dcm_pad2; 23 volatile u_char dcm_sem; /* Semaphore register 0005 */ 24 u_char dcm_pad3[0x7ffa]; /* Unaddressable 0006-7fff */ 25 u_char dcm_pad4; 26 volatile u_char dcm_iir; /* Interrupt ident register 8001 */ 27 u_char dcm_pad5; 28 volatile u_char dcm_cr; /* Command register 8003 */ 29 u_char dcm_pad6[0x3fc]; /* Card scratch 8004-83ff */ 30 struct dcmrfifo { 31 u_char ptr_pad1; 32 volatile u_char data_char; 33 u_char ptr_pad2; 34 volatile u_char data_stat; 35 } dcm_rfifos[4][0x80]; /* Receive queues 8400 */ 36 struct { 37 u_char ptr_pad1; 38 volatile u_char data_data; 39 } dcm_bmap[0x100]; /* Bitmap table 8c00 */ 40 struct { 41 u_char ptr_pad; 42 volatile u_char ptr; 43 } dcm_rhead[4]; /* Fifo head - receive 8e00 */ 44 struct { 45 u_char ptr_pad; 46 volatile u_char ptr; 47 } dcm_rtail[4]; /* Fifo tail - receive 8e08 */ 48 struct { 49 u_char ptr_pad; 50 volatile u_char ptr; 51 } dcm_thead[4]; /* Fifo head - transmit 8e10 */ 52 struct { 53 u_char ptr_pad; 54 volatile u_char ptr; 55 } dcm_ttail[4]; /* Fifo tail - transmit 8e18 */ 56 struct { 57 u_char pad1; 58 volatile u_char dcm_conf; 59 u_char pad2; 60 volatile u_char dcm_baud; 61 } dcm_data[4]; /* Configuration registers 8e20 */ 62 struct modemreg { 63 u_char pad0; 64 volatile u_char mdmin; /* Modem in 8e31 */ 65 u_char pad1; 66 volatile u_char mdmout; /* Modem out 8e33 */ 67 u_char pad2; 68 volatile u_char mdmmsk; /* Modem mask 8e35 */ 69 } dcm_modem0; 70 struct { 71 u_char pad1; 72 volatile u_char dcm_data; 73 } dcm_cmdtab[4]; /* Command tables 8e36 */ 74 struct { 75 u_char pad1; 76 volatile u_char dcm_data; 77 } dcm_icrtab[4]; /* Interrupt data 8e3e */ 78 u_char dcm_pad10; 79 volatile u_char dcm_stcon; /* Self test condition 8e47 */ 80 struct modemreg dcm_modem1; /* 638 Modem port1 8e48 */ 81 struct modemreg dcm_modem2; /* 638 Modem port2 8e4e */ 82 struct modemreg dcm_modem3; /* 638 Modem port3 8e54 */ 83 u_char dcm_pad11; 84 volatile u_char dcm_modemchng; /* 638 Modem change mask 8e5b */ 85 u_char dcm_pad12; 86 volatile u_char dcm_modemintr; /* 638 Modem interrupt mask 8e5d */ 87 u_char dcm_pad13[0x82]; /* Undef Shared Ram 8e5e-8edf */ 88 struct dcmtfifo { 89 u_char ptr_pad1; 90 volatile u_char data_char; 91 } dcm_tfifos[4][0x10]; /* Transmit queues 8ee0 */ 92 }; 93 94 /* 95 * Overlay structure for port specific queue "registers". 96 * Starts at offset 0x8E00+(port*2). 97 */ 98 struct dcmpreg { 99 u_char pad0; /* +00 */ 100 volatile u_char r_head; /* +01 */ 101 u_char pad1[7]; /* +02 */ 102 volatile u_char r_tail; /* +09 */ 103 u_char pad2[7]; /* +0A */ 104 volatile u_char t_head; /* +11 */ 105 u_char pad3[7]; /* +12 */ 106 volatile u_char t_tail; /* +19 */ 107 }; 108 #define dcm_preg(d, p) ((struct dcmpreg *)((u_int)(d)+0x8e00+(p)*2)) 109 110 /* interface reset/id */ 111 #define DCMCON 0x80 /* REMOTE/LOCAL switch, read */ 112 #define DCMID 0x5 /* hardwired card id, read */ 113 #define DCMRS 0x80 /* software reset, write */ 114 115 /* interrupt control */ 116 #define DCMIPL(x) ((((x) >> 4) & 3) + 3) /* interupt level, read */ 117 #define IC_IR 0x40 /* interupt request, read */ 118 #define IC_IE 0x80 /* interupt enable, write */ 119 #define IC_ID 0x00 /* interupt disable, write */ 120 121 122 /* Semaphore control */ 123 #define SEM_BSY 0x80 /* read */ 124 #define SEM_CLR 0xFF /* write */ 125 #define SEM_LOCK(dcm) while ((dcm)->dcm_sem & SEM_BSY) 126 #define SEM_UNLOCK(dcm) (dcm)->dcm_sem = SEM_CLR 127 128 /* command register */ 129 #define CR_PORT0 0x1 130 #define CR_PORT1 0x2 131 #define CR_PORT2 0x4 132 #define CR_PORT3 0x8 133 #define CR_MODM 0x10 /* change modem output lines */ 134 #define CR_TIMER 0x20 /* 16ms interrupt timer toggle */ 135 #define CR_SELFT 0x40 /* run self test */ 136 #define CR_MASK 0x7f 137 138 /* interrupt ident register */ 139 #define IIR_PORT0 0x1 140 #define IIR_PORT1 0x2 141 #define IIR_PORT2 0x4 142 #define IIR_PORT3 0x8 143 #define IIR_SELFT 0x10 /* self test completed */ 144 #define IIR_MODM 0x20 /* change in modem input lines */ 145 #define IIR_TIMEO 0x40 /* Time out */ 146 #define IIR_MASK 0x7f 147 148 /* self test cond reg */ 149 #define ST_OK 0xe0 150 151 /* Line configuration register */ 152 #define LC_PNO 0x00 153 #define LC_PODD 0x01 154 #define LC_PEVEN 0x02 155 #define LC_PMSK 0x03 156 157 #define LC_1STOP 0x00 158 #define LC_1HSTOP 0x04 159 #define LC_2STOP 0x08 160 #define LC_STOPMSK 0x0b 161 162 #define LC_8BITS 0x30 163 #define LC_7BITS 0x20 164 #define LC_6BITS 0x10 165 #define LC_5BITS 0x00 166 #define LC_BITMSK 0x30 167 168 /* baud reg */ 169 #define BR_0 0x00 170 #define BR_50 0x01 171 #define BR_75 0x02 172 #define BR_110 0x03 173 #define BR_134 0x04 174 #define BR_150 0x05 175 #define BR_300 0x06 176 #define BR_600 0x07 177 #define BR_900 0x08 178 #define BR_1200 0x09 179 #define BR_1800 0x0a 180 #define BR_2400 0x0b 181 #define BR_3600 0x0c 182 #define BR_4800 0x0d 183 #define BR_7200 0x0e 184 #define BR_9600 0x0f 185 #define BR_19200 0x10 186 #define BR_38400 0x11 187 188 /* modem input register */ 189 #define MI_CTS 0x08 190 #define MI_DM 0x04 191 #define MI_CD 0x02 192 #define MI_RI 0x01 193 194 /* modem output register */ 195 #define MO_SR 0x04 196 #define MO_DTR 0x02 197 #define MO_RTS 0x01 198 #define MO_ON ((MO_DTR) | (MO_RTS)) 199 #define MO_OFF 0x00 200 201 /* cmd-tab values, write */ 202 #define CT_CON 0x1 /* configuration change */ 203 #define CT_TX 0x2 /* transmit buffer not empty */ 204 #define CT_BRK 0x4 /* toggle BREAK */ 205 206 /* icr-tab values, read */ 207 #define IT_TX 0x1 /* transmit buffer empty */ 208 #define IT_SPEC 0x2 /* special character received */ 209 210 /* data errors */ 211 #define RD_OVF 0x08 212 #define RD_BD 0x10 213 #define RD_PE 0x20 214 #define RD_OE 0x40 215 #define RD_FE 0x80 216 #define RD_MASK 0xf8 217 218 /* Transmit/Receive masks */ 219 #define TX_MASK 0x0f 220 #define RX_MASK 0xff 221 222 /* 223 * WARNING: Serial console is assumed to be the lowest select-code card 224 * and that card must be logical unit 0 in the kernel. Also, CONUNIT must 225 * be 1, the port affected by the REMOTE/LOCAL switch. 226 */ 227 #define CONUNIT (1) 228