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 7.2 (Berkeley) 05/25/90 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 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 dcmtfifo { 80 u_char ptr_pad1; 81 volatile u_char data_char; 82 } dcm_tfifos[4][0x10]; /* Transmit queues 8ee0 */ 83 }; 84 85 /* 86 * Overlay structure for port specific queue "registers". 87 * Starts at offset 0x8E00+(port*2). 88 */ 89 struct dcmpreg { 90 u_char pad0; /* +00 */ 91 volatile u_char r_head; /* +01 */ 92 u_char pad1[7]; /* +02 */ 93 volatile u_char r_tail; /* +09 */ 94 u_char pad2[7]; /* +0A */ 95 volatile u_char t_head; /* +11 */ 96 u_char pad3[7]; /* +12 */ 97 volatile u_char t_tail; /* +19 */ 98 }; 99 #define dcm_preg(d, p) ((struct dcmpreg *)((u_int)(d)+0x8e00+(p)*2)) 100 101 /* interface reset/id */ 102 #define DCMCON 0x80 /* REMOTE/LOCAL switch, read */ 103 #define DCMID 0x5 /* hardwired card id, read */ 104 #define DCMRS 0x80 /* software reset, write */ 105 106 /* interrupt control */ 107 #define DCMIPL(x) ((((x) >> 4) & 3) + 3) /* interupt level, read */ 108 #define IC_IR 0x40 /* interupt request, read */ 109 #define IC_IE 0x80 /* interupt enable, write */ 110 #define IC_ID 0x00 /* interupt disable, write */ 111 112 113 /* Semaphore control */ 114 #define SEM_BSY 0x80 /* read */ 115 #define SEM_CLR 0xFF /* write */ 116 #define SEM_LOCK(dcm) while ((dcm)->dcm_sem & SEM_BSY) 117 #define SEM_UNLOCK(dcm) (dcm)->dcm_sem = SEM_CLR 118 119 /* command register */ 120 #define CR_PORT0 0x1 121 #define CR_PORT1 0x2 122 #define CR_PORT2 0x4 123 #define CR_PORT3 0x8 124 #define CR_MODM 0x10 /* change modem output lines */ 125 #define CR_TIMER 0x20 /* 16ms interrupt timer toggle */ 126 #define CR_SELFT 0x40 /* run self test */ 127 #define CR_MASK 0x7f 128 129 /* interrupt ident register */ 130 #define IIR_PORT0 0x1 131 #define IIR_PORT1 0x2 132 #define IIR_PORT2 0x4 133 #define IIR_PORT3 0x8 134 #define IIR_SELFT 0x10 /* self test completed */ 135 #define IIR_MODM 0x20 /* change in modem input lines */ 136 #define IIR_TIMEO 0x40 /* Time out */ 137 #define IIR_MASK 0x7f 138 139 /* self test cond reg */ 140 #define ST_OK 0xe0 141 142 /* Line configuration register */ 143 #define LC_PNO 0x00 144 #define LC_PODD 0x01 145 #define LC_PEVEN 0x02 146 #define LC_PMSK 0x03 147 148 #define LC_1STOP 0x00 149 #define LC_1HSTOP 0x04 150 #define LC_2STOP 0x08 151 #define LC_STOPMSK 0x0b 152 153 #define LC_8BITS 0x30 154 #define LC_7BITS 0x20 155 #define LC_6BITS 0x10 156 #define LC_5BITS 0x00 157 #define LC_BITMSK 0x30 158 159 /* baud reg */ 160 #define BR_0 0x00 161 #define BR_50 0x01 162 #define BR_75 0x02 163 #define BR_110 0x03 164 #define BR_134 0x04 165 #define BR_150 0x05 166 #define BR_300 0x06 167 #define BR_600 0x07 168 #define BR_900 0x08 169 #define BR_1200 0x09 170 #define BR_1800 0x0a 171 #define BR_2400 0x0b 172 #define BR_3600 0x0c 173 #define BR_4800 0x0d 174 #define BR_7200 0x0e 175 #define BR_9600 0x0f 176 #define BR_19200 0x10 177 #define BR_38400 0x11 178 179 /* modem input register */ 180 #define MI_CTS 0x08 181 #define MI_DM 0x04 182 #define MI_CD 0x02 183 #define MI_RI 0x01 184 185 /* modem output register */ 186 #define MO_SR 0x04 187 #define MO_DTR 0x02 188 #define MO_RTS 0x01 189 #define MO_ON ((MO_DTR) | (MO_RTS)) 190 #define MO_OFF 0x00 191 192 /* cmd-tab values, write */ 193 #define CT_CON 0x1 /* configuration change */ 194 #define CT_TX 0x2 /* transmit buffer not empty */ 195 #define CT_BRK 0x4 /* toggle BREAK */ 196 197 /* icr-tab values, read */ 198 #define IT_TX 0x1 /* transmit buffer empty */ 199 #define IT_SPEC 0x2 /* special character received */ 200 201 /* data errors */ 202 #define RD_OVF 0x08 203 #define RD_BD 0x10 204 #define RD_PE 0x20 205 #define RD_OE 0x40 206 #define RD_FE 0x80 207 #define RD_MASK 0xf8 208 209 /* Transmit/Receive masks */ 210 #define TX_MASK 0x0f 211 #define RX_MASK 0xff 212 213 /* 214 * WARNING: Serial console is assumed to be at SC13 215 * and CONUNIT must be 1, signaled by REMOTE/LOCAL switch on card 216 */ 217 #define CONADDR ((struct dcmdevice *)(IOV(EXTIOBASE + (13 * IOCARDSIZE)))) 218 #define CONUNIT (1) 219