Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/si/si.h
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1 /*- 2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors. 3 * 'C' definitions for Specialix serial multiplex driver. 4 * 5 * Copyright (C) 1990, 1992, 1998 Specialix International, 6 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk> 7 * Copyright (C) 1995, Peter Wemm <peter@netplex.com.au> 8 * 9 * Derived from: SunOS 4.x version 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notices, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notices, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Andy Rutter of 22 * Advanced Methods and Tools Ltd. based on original information 23 * from Specialix International. 24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix 25 * International may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 31 * NO EVENT SHALL THE AUTHORS BE LIABLE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #include <sys/callout.h> 37 38 /* 39 * We name devices with %r in make_dev() with a radix of 32. 40 */ 41 #define SI_MAXPORTPERCARD 32 42 43 /* Buffer parameters */ 44 #define SI_BUFFERSIZE 256 45 46 typedef uint8_t BYTE; /* Type cast for unsigned 8 bit */ 47 typedef uint16_t WORD; /* Type cast for unsigned 16 bit */ 48 49 /* 50 * Hardware `registers', stored in the shared memory. 51 * These are related to the firmware running on the Z280. 52 */ 53 54 struct si_reg { 55 BYTE initstat; 56 BYTE memsize; 57 WORD int_count; 58 WORD revision; 59 BYTE rx_int_count; /* isr_count on Jet */ 60 BYTE main_count; /* spare on Z-280 */ 61 WORD int_pending; 62 WORD int_counter; 63 BYTE int_scounter; 64 BYTE res[0x80 - 13]; 65 }; 66 67 /* 68 * Per module control structure, stored in shared memory. 69 */ 70 struct si_module { 71 WORD sm_next; /* Next module */ 72 BYTE sm_type; /* Number of channels */ 73 BYTE sm_number; /* Module number on cable */ 74 BYTE sm_dsr; /* Private dsr copy */ 75 BYTE sm_res[0x80 - 5]; /* Reserve space to 128 bytes */ 76 }; 77 78 /* 79 * The 'next' pointer & with 0x7fff + SI base addres give 80 * the address of the next module block if fitted. (else 0) 81 * Note that next points to the TX buffer so 0x60 must be 82 * subtracted to find the true base. 83 */ 84 #define TA4 0x00 85 #define TA8 0x08 86 #define TA4_ASIC 0x0A 87 #define TA8_ASIC 0x0B 88 #define MTA 0x28 89 #define SXDC 0x48 90 91 /* 92 * Per channel(port) control structure, stored in shared memory. 93 */ 94 struct si_channel { 95 /* 96 * Generic stuff 97 */ 98 WORD next; /* Next Channel */ 99 WORD addr_uart; /* Uart address */ 100 WORD module; /* address of module struct */ 101 BYTE type; /* Uart type */ 102 BYTE fill; 103 /* 104 * Uart type specific stuff 105 */ 106 BYTE x_status; /* XON / XOFF status */ 107 BYTE c_status; /* cooking status */ 108 BYTE hi_rxipos; /* stuff into rx buff */ 109 BYTE hi_rxopos; /* stuff out of rx buffer */ 110 BYTE hi_txopos; /* Stuff into tx ptr */ 111 BYTE hi_txipos; /* ditto out */ 112 BYTE hi_stat; /* Command register */ 113 BYTE dsr_bit; /* Magic bit for DSR */ 114 BYTE txon; /* TX XON char */ 115 BYTE txoff; /* ditto XOFF */ 116 BYTE rxon; /* RX XON char */ 117 BYTE rxoff; /* ditto XOFF */ 118 BYTE hi_mr1; /* mode 1 image */ 119 BYTE hi_mr2; /* mode 2 image */ 120 BYTE hi_csr; /* clock register */ 121 BYTE hi_op; /* Op control */ 122 BYTE hi_ip; /* Input pins */ 123 BYTE hi_state; /* status */ 124 BYTE hi_prtcl; /* Protocol */ 125 BYTE hi_txon; /* host copy tx xon stuff */ 126 BYTE hi_txoff; 127 BYTE hi_rxon; 128 BYTE hi_rxoff; 129 BYTE close_prev; /* Was channel previously closed */ 130 BYTE hi_break; /* host copy break process */ 131 BYTE break_state; /* local copy ditto */ 132 BYTE hi_mask; /* Mask for CS7 etc. */ 133 BYTE mask_z280; /* Z280's copy */ 134 BYTE res[0x60 - 36]; 135 BYTE hi_txbuf[SI_BUFFERSIZE]; 136 BYTE hi_rxbuf[SI_BUFFERSIZE]; 137 BYTE res1[0xA0]; 138 }; 139 140 /* 141 * Register definitions 142 */ 143 144 /* 145 * Break input control register definitions 146 */ 147 #define BR_IGN 0x01 /* Ignore any received breaks */ 148 #define BR_INT 0x02 /* Interrupt on received break */ 149 #define BR_PARMRK 0x04 /* Enable parmrk parity error processing */ 150 #define BR_PARIGN 0x08 /* Ignore chars with parity errors */ 151 152 /* 153 * Protocol register provided by host for XON/XOFF and cooking 154 */ 155 #define SP_TANY 0x01 /* Tx XON any char */ 156 #define SP_TXEN 0x02 /* Tx XON/XOFF enabled */ 157 #define SP_CEN 0x04 /* Cooking enabled */ 158 #define SP_RXEN 0x08 /* Rx XON/XOFF enabled */ 159 #define SP_DCEN 0x20 /* DCD / DTR check */ 160 #define SP_PAEN 0x80 /* Parity checking enabled */ 161 162 /* 163 * HOST STATUS / COMMAND REGISTER 164 */ 165 #define IDLE_OPEN 0x00 /* Default mode, TX and RX polled 166 buffer updated etc */ 167 #define LOPEN 0x02 /* Local open command (no modem ctl */ 168 #define MOPEN 0x04 /* Open and monitor modem lines (blocks 169 for DCD */ 170 #define MPEND 0x06 /* Wating for DCD */ 171 #define CONFIG 0x08 /* Channel config has changed */ 172 #define CLOSE 0x0A /* Close channel */ 173 #define SBREAK 0x0C /* Start break */ 174 #define EBREAK 0x0E /* End break */ 175 #define IDLE_CLOSE 0x10 /* Closed channel */ 176 #define IDLE_BREAK 0x12 /* In a break */ 177 #define FCLOSE 0x14 /* Force a close */ 178 #define RESUME 0x16 /* Clear a pending xoff */ 179 #define WFLUSH 0x18 /* Flush output buffer */ 180 #define RFLUSH 0x1A /* Flush input buffer */ 181 182 /* 183 * Host status register 184 */ 185 #define ST_BREAK 0x01 /* Break received (clear with config) */ 186 187 /* 188 * OUTPUT PORT REGISTER 189 */ 190 #define OP_CTS 0x01 /* Enable CTS */ 191 #define OP_DSR 0x02 /* Enable DSR */ 192 /* 193 * INPUT PORT REGISTER 194 */ 195 #define IP_DCD 0x04 /* DCD High */ 196 #define IP_DTR 0x20 /* DTR High */ 197 #define IP_RTS 0x02 /* RTS High */ 198 #define IP_RI 0x40 /* RI High */ 199 200 /* 201 * Mode register and uart specific stuff 202 */ 203 /* 204 * MODE REGISTER 1 205 */ 206 #define MR1_5_BITS 0x00 207 #define MR1_6_BITS 0x01 208 #define MR1_7_BITS 0x02 209 #define MR1_8_BITS 0x03 210 /* 211 * Parity 212 */ 213 #define MR1_ODD 0x04 214 #define MR1_EVEN 0x00 215 /* 216 * Parity mode 217 */ 218 #define MR1_WITH 0x00 219 #define MR1_FORCE 0x08 220 #define MR1_NONE 0x10 221 #define MR1_SPECIAL 0x18 222 /* 223 * Error mode 224 */ 225 #define MR1_CHAR 0x00 226 #define MR1_BLOCK 0x20 227 /* 228 * Request to send line automatic control 229 */ 230 #define MR1_CTSCONT 0x80 231 232 /* 233 * MODE REGISTER 2 234 */ 235 /* 236 * Number of stop bits 237 */ 238 #define MR2_1_STOP 0x07 239 #define MR2_2_STOP 0x0F 240 /* 241 * Clear to send automatic testing before character sent 242 */ 243 #define MR2_RTSCONT 0x10 244 /* 245 * Reset RTS automatically after sending character? 246 */ 247 #define MR2_CTSCONT 0x20 248 /* 249 * Channel mode 250 */ 251 #define MR2_NORMAL 0x00 252 #define MR2_AUTO 0x40 253 #define MR2_LOCAL 0x80 254 #define MR2_REMOTE 0xC0 255 256 /* 257 * CLOCK SELECT REGISTER - this and the code assumes ispeed == ospeed 258 */ 259 /* 260 * Clocking rates are in lower and upper nibbles.. R = upper, T = lower 261 */ 262 #define CLK75 0x0 263 #define CLK110 0x1 /* 110 on XIO!! */ 264 #define CLK38400 0x2 /* out of sequence */ 265 #define CLK150 0x3 266 #define CLK300 0x4 267 #define CLK600 0x5 268 #define CLK1200 0x6 269 #define CLK2000 0x7 270 #define CLK2400 0x8 271 #define CLK4800 0x9 272 #define CLK7200 0xa /* unchecked */ 273 #define CLK9600 0xb 274 #define CLK19200 0xc 275 #define CLK57600 0xd 276 277 /* 278 * Per-port (channel) soft information structure, stored in the driver. 279 * This is visible via ioctl()'s. 280 */ 281 struct si_port { 282 volatile struct si_channel *sp_ccb; 283 struct tty *sp_tty; 284 int sp_pend; /* pending command */ 285 int sp_last_hi_ip; /* cached DCD */ 286 int sp_state; 287 int sp_delta_overflows; 288 struct callout_handle lstart_ch;/* For canceling our timeout */ 289 int sp_debug; /* debug mask */ 290 char sp_name[5]; 291 }; 292 293 /* sp_state */ 294 /* 0x0001 -- */ 295 /* 0x0002 -- */ 296 /* 0x0004 -- */ 297 /* 0x0008 -- */ 298 /* 0x0010 -- */ 299 /* 0x0020 -- */ 300 /* 0x0040 -- */ 301 /* 0x0080 -- */ 302 #define SS_LSTART 0x0100 /* lstart timeout pending */ 303 /* 0x0200 -- */ 304 /* 0x0400 -- */ 305 /* 0x0800 -- */ 306 307 /* 308 * Command post flags 309 */ 310 #define SI_NOWAIT 0x00 /* Don't wait for command */ 311 #define SI_WAIT 0x01 /* Wait for complete */ 312 313 /* 314 * SI ioctls 315 */ 316 /* 317 * struct for use by Specialix ioctls - used by siconfig(8) 318 */ 319 typedef struct { 320 unsigned char 321 sid_port:5, /* 0 - 31 ports per card */ 322 sid_card:2, /* 0 - 3 cards */ 323 sid_control:1; /* controlling device (all cards) */ 324 } sidev_t; 325 struct si_tcsi { 326 sidev_t tc_dev; 327 union { 328 int x_int; 329 int x_dbglvl; 330 } tc_action; 331 #define tc_card tc_dev.sid_card 332 #define tc_port tc_dev.sid_port 333 #define tc_int tc_action.x_int 334 #define tc_dbglvl tc_action.x_dbglvl 335 }; 336 337 struct si_pstat { 338 sidev_t tc_dev; 339 union { 340 struct si_port x_siport; 341 struct si_channel x_ccb; 342 struct tty x_tty; 343 } tc_action; 344 #define tc_siport tc_action.x_siport 345 #define tc_ccb tc_action.x_ccb 346 #define tc_tty tc_action.x_tty 347 }; 348 349 #define IOCTL_MIN 96 350 #define TCSIDEBUG _IOW('S', 96, struct si_tcsi) /* Toggle debug */ 351 #define TCSIRXIT _IOW('S', 97, struct si_tcsi) /* RX int throttle */ 352 #define TCSIIT _IOW('S', 98, struct si_tcsi) /* TX int throttle */ 353 /* 99 defunct */ 354 /* 100 defunct */ 355 /* 101 defunct */ 356 /* 102 defunct */ 357 /* 103 defunct */ 358 /* 104 defunct */ 359 #define TCSISTATE _IOWR('S', 105, struct si_tcsi) /* get current state of RTS 360 DCD and DTR pins */ 361 /* 106 defunct */ 362 #define TCSIPORTS _IOR('S', 107, int) /* Number of ports found */ 363 #define TCSISDBG_LEVEL _IOW('S', 108, struct si_tcsi) /* equivalent of TCSIDEBUG which sets a 364 * particular debug level (DBG_??? bit 365 * mask), default is 0xffff */ 366 #define TCSIGDBG_LEVEL _IOWR('S', 109, struct si_tcsi) 367 #define TCSIGRXIT _IOWR('S', 110, struct si_tcsi) 368 #define TCSIGIT _IOWR('S', 111, struct si_tcsi) 369 /* 112 defunct */ 370 /* 113 defunct */ 371 /* 114 defunct */ 372 /* 115 defunct */ 373 /* 116 defunct */ 374 /* 117 defunct */ 375 376 #define TCSISDBG_ALL _IOW('S', 118, int) /* set global debug level */ 377 #define TCSIGDBG_ALL _IOR('S', 119, int) /* get global debug level */ 378 379 /* 120 defunct */ 380 /* 121 defunct */ 381 /* 122 defunct */ 382 /* 123 defunct */ 383 #define TCSIMODULES _IOR('S', 124, int) /* Number of modules found */ 384 385 /* Various stats and monitoring hooks per tty device */ 386 #define TCSI_PORT _IOWR('S', 125, struct si_pstat) /* get si_port */ 387 #define TCSI_CCB _IOWR('S', 126, struct si_pstat) /* get si_ccb */ 388 389 #define IOCTL_MAX 127 390 391 #define IS_SI_IOCTL(cmd) ((u_int)((cmd)&0xff00) == ('S'<<8) && \ 392 (u_int)((cmd)&0xff) >= IOCTL_MIN && \ 393 (u_int)((cmd)&0xff) <= IOCTL_MAX) 394 395 #define CONTROLDEV "/dev/si_control"
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