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 $Hdr: dcmreg.h 1.3 89/08/23$ 13 * 14 * @(#)dcmreg.h 7.1 (Berkeley) 05/08/90 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 { 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 u_char dcm_pad7; 63 volatile u_char dcm_mdmin; /* Modem in 8e31 */ 64 u_char dcm_pad8; 65 volatile u_char dcm_mdmout; /* Modem out 8e33 */ 66 u_char dcm_pad9; 67 volatile u_char dcm_mdmmsk; /* Modem mask 8e35 */ 68 struct { 69 u_char pad1; 70 volatile u_char dcm_data; 71 } dcm_cmdtab[4]; /* Command tables 8e36 */ 72 struct { 73 u_char pad1; 74 volatile u_char dcm_data; 75 } dcm_icrtab[4]; /* Interrupt data 8e3e */ 76 u_char dcm_pad10; 77 volatile u_char dcm_stcon; /* Self test condition 8e47 */ 78 u_char dcm_pad11[0x98]; /* Undef SR regs 8e48-8edf */ 79 struct { 80 u_char ptr_pad1; 81 volatile u_char data_char; 82 } dcm_tfifos[4][0x10]; /* Transmit queues 8ee0 */ 83 }; 84 85 /* interface reset/id */ 86 #define DCMCON 0x80 /* REMOTE/LOCAL switch, read */ 87 #define DCMID 0x5 /* hardwired card id, read */ 88 #define DCMRS 0x80 /* software reset, write */ 89 90 /* interrupt control */ 91 #define DCMIPL(x) ((((x) >> 4) & 3) + 3) /* interupt level, read */ 92 #define IC_IR 0x40 /* interupt request, read */ 93 #define IC_IE 0x80 /* interupt enable, write */ 94 #define IC_ID 0x00 /* interupt disable, write */ 95 96 97 /* Semaphore control */ 98 #define SEM_BSY 0x80 /* read */ 99 #define SEM_CLR 0xFF /* write */ 100 #define SEM_LOCK(dcm) while ((dcm)->dcm_sem & SEM_BSY) 101 #define SEM_UNLOCK(dcm) (dcm)->dcm_sem = SEM_CLR 102 103 /* command register */ 104 #define CR_PORT0 0x1 105 #define CR_PORT1 0x2 106 #define CR_PORT2 0x4 107 #define CR_PORT3 0x8 108 #define CR_MODM 0x10 /* change modem output lines */ 109 #define CR_TIMER 0x20 /* 16ms interrupt timer toggle */ 110 #define CR_SELFT 0x40 /* run self test */ 111 #define CR_MASK 0x7f 112 113 /* interrupt ident register */ 114 #define IIR_PORT0 0x1 115 #define IIR_PORT1 0x2 116 #define IIR_PORT2 0x4 117 #define IIR_PORT3 0x8 118 #define IIR_SELFT 0x10 /* self test completed */ 119 #define IIR_MODM 0x20 /* change in modem input lines */ 120 #define IIR_TIMEO 0x40 /* Time out */ 121 #define IIR_MASK 0x7f 122 123 /* self test cond reg */ 124 #define ST_OK 0xe0 125 126 /* Line configuration register */ 127 #define LC_PNO 0x00 128 #define LC_PODD 0x01 129 #define LC_PEVEN 0x02 130 #define LC_PMSK 0x03 131 132 #define LC_1STOP 0x00 133 #define LC_1HSTOP 0x04 134 #define LC_2STOP 0x08 135 #define LC_STOPMSK 0x0b 136 137 #define LC_8BITS 0x30 138 #define LC_7BITS 0x20 139 #define LC_6BITS 0x10 140 #define LC_5BITS 0x00 141 #define LC_BITMSK 0x30 142 143 /* baud reg */ 144 #define BR_0 0x00 145 #define BR_50 0x01 146 #define BR_75 0x02 147 #define BR_110 0x03 148 #define BR_134 0x04 149 #define BR_150 0x05 150 #define BR_300 0x06 151 #define BR_600 0x07 152 #define BR_900 0x08 153 #define BR_1200 0x09 154 #define BR_1800 0x0a 155 #define BR_2400 0x0b 156 #define BR_3600 0x0c 157 #define BR_4800 0x0d 158 #define BR_7200 0x0e 159 #define BR_9600 0x0f 160 #define BR_19200 0x10 161 #define BR_38400 0x11 162 163 /* modem input register */ 164 #define MI_CTS 0x08 165 #define MI_DM 0x04 166 #define MI_CD 0x02 167 #define MI_RI 0x01 168 169 /* modem output register */ 170 #define MO_SR 0x04 171 #define MO_DTR 0x02 172 #define MO_RTS 0x01 173 #define MO_ON ((MO_DTR) | (MO_RTS)) 174 #define MO_OFF 0x00 175 176 /* cmd-tab values, write */ 177 #define CT_CON 0x1 /* configuration change */ 178 #define CT_TX 0x2 /* transmit buffer not empty */ 179 #define CT_BRK 0x4 /* toggle BREAK */ 180 181 /* icr-tab values, read */ 182 #define IT_TX 0x1 /* transmit buffer empty */ 183 #define IT_SPEC 0x2 /* special character received */ 184 185 /* data errors */ 186 #define RD_OVF 0x08 187 #define RD_BD 0x10 188 #define RD_PE 0x20 189 #define RD_OE 0x40 190 #define RD_FE 0x80 191 #define RD_MASK 0xf8 192 193 /* Transmit/Receive masks */ 194 #define TX_MASK 0x0f 195 #define RX_MASK 0xff 196 197 /* 198 * WARNING: Serial console is assumed to be at SC13 199 * and CONUNIT must be 1, signeled by REMOTE/LOCAL switch on card 200 */ 201 #define CONADDR ((struct dcmdevice *)(IOV(EXTIOBASE + (13 * IOCARDSIZE)))) 202 #define CONUNIT (1) 203