adb.c revision 1.61
1 /* $NetBSD: adb.c,v 1.61 2024/09/18 01:29:02 nat Exp $ */ 2 3 /* 4 * Copyright (C) 1994 Bradley A. Grantham 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: adb.c,v 1.61 2024/09/18 01:29:02 nat Exp $"); 30 31 #include "opt_adb.h" 32 33 #include <sys/param.h> 34 #include <sys/device.h> 35 #include <sys/fcntl.h> 36 #include <sys/poll.h> 37 #include <sys/select.h> 38 #include <sys/proc.h> 39 #include <sys/signalvar.h> 40 #include <sys/systm.h> 41 #include <sys/cpu.h> 42 #include <sys/intr.h> 43 44 #include <machine/autoconf.h> 45 46 #include <mac68k/mac68k/macrom.h> 47 #include <mac68k/dev/adbvar.h> 48 #include <mac68k/dev/akbdvar.h> 49 50 #include "aed.h" /* ADB Event Device for compatibility */ 51 52 /* 53 * Function declarations. 54 */ 55 static int adbmatch(device_t, cfdata_t, void *); 56 static void adbattach(device_t, device_t, void *); 57 static int adbprint(void *, const char *); 58 void adb_config_interrupts(device_t); 59 60 extern void adb_jadbproc(void); 61 62 /* 63 * Global variables. 64 */ 65 int adb_polling = 0; /* Are we polling? (Debugger mode) */ 66 #ifdef ADB_DEBUG 67 int adb_debug = 0; /* Output debugging messages */ 68 #endif /* ADB_DEBUG */ 69 70 extern struct mac68k_machine_S mac68k_machine; 71 extern int adbHardware; 72 extern char *adbHardwareDescr[]; 73 74 /* 75 * Driver definition. 76 */ 77 CFATTACH_DECL_NEW(adb, 0, 78 adbmatch, adbattach, NULL, NULL); 79 80 static int 81 adbmatch(device_t parent, cfdata_t cf, void *aux) 82 { 83 static bool adb_matched; 84 85 /* Allow only one instance. */ 86 if (adb_matched) 87 return (0); 88 89 adb_matched = true; 90 return (1); 91 } 92 93 static void 94 adbattach(device_t parent, device_t self, void *aux) 95 { 96 97 switch (mac68k_machine.machineid) { 98 case MACH_MACPB140: 99 case MACH_MACPB145: 100 case MACH_MACPB160: 101 case MACH_MACPB165: 102 case MACH_MACPB165C: 103 case MACH_MACPB170: 104 case MACH_MACPB180: 105 case MACH_MACPB180C: 106 case MACH_MACPB150: 107 case MACH_MACPB210: 108 case MACH_MACPB230: 109 case MACH_MACPB250: 110 case MACH_MACPB270: 111 case MACH_MACPB280: 112 case MACH_MACPB280C: 113 /* Reqired on machines with in-built trackballs. */ 114 printf("... Waiting 5 seconds for adb devices to " 115 "settle."); 116 kpause("adb-slp", false, mstohz(5000), NULL); 117 break; 118 default: 119 break; 120 } 121 122 adb_softintr_cookie = softint_establish(SOFTINT_SERIAL, 123 (void (*)(void *))adb_soft_intr, NULL); 124 printf("\n"); 125 126 /* 127 * Defer configuration until interrupts are enabled. 128 */ 129 config_interrupts(self, adb_config_interrupts); 130 } 131 132 void 133 adb_config_interrupts(device_t self) 134 { 135 ADBDataBlock adbdata; 136 struct adb_attach_args aa_args; 137 int totaladbs; 138 int adbindex, adbaddr; 139 140 printf("%s", device_xname(self)); 141 adb_polling = 1; 142 143 #ifdef MRG_ADB 144 if (!mrg_romready()) { 145 printf(": no ROM ADB driver in this kernel for this machine\n"); 146 return; 147 } 148 149 #ifdef ADB_DEBUG 150 if (adb_debug) 151 printf("adb: call mrg_initadbintr\n"); 152 #endif 153 154 mrg_initadbintr(); /* Mac ROM Glue okay to do ROM intr */ 155 #ifdef ADB_DEBUG 156 if (adb_debug) 157 printf("adb: returned from mrg_initadbintr\n"); 158 #endif 159 160 /* ADBReInit pre/post-processing */ 161 JADBProc = adb_jadbproc; 162 163 /* Initialize ADB */ 164 #ifdef ADB_DEBUG 165 if (adb_debug) 166 printf("adb: calling ADBAlternateInit.\n"); 167 #endif 168 169 printf(" (mrg)"); 170 ADBAlternateInit(); 171 #else 172 ADBReInit(); 173 printf(" (direct, %s)", adbHardwareDescr[adbHardware]); 174 #endif /* MRG_ADB */ 175 176 #ifdef ADB_DEBUG 177 if (adb_debug) 178 printf("adb: done with ADBReInit\n"); 179 #endif 180 181 totaladbs = CountADBs(); 182 183 printf(": %d target%s\n", totaladbs, (totaladbs == 1) ? "" : "s"); 184 185 #if NAED > 0 186 /* ADB event device for compatibility */ 187 aa_args.origaddr = 0; 188 aa_args.adbaddr = 0; 189 aa_args.handler_id = 0; 190 (void)config_found(self, &aa_args, adbprint, CFARGS_NONE); 191 #endif 192 193 /* for each ADB device */ 194 for (adbindex = 1; adbindex <= totaladbs; adbindex++) { 195 /* Get the ADB information */ 196 adbaddr = GetIndADB(&adbdata, adbindex); 197 198 aa_args.origaddr = (int)(adbdata.origADBAddr); 199 aa_args.adbaddr = adbaddr; 200 aa_args.handler_id = (int)(adbdata.devType); 201 202 (void)config_found(self, &aa_args, adbprint, CFARGS_NONE); 203 } 204 adb_polling = 0; 205 } 206 207 208 int 209 adbprint(void *args, const char *name) 210 { 211 struct adb_attach_args *aa_args = (struct adb_attach_args *)args; 212 int rv = UNCONF; 213 214 if (name) { /* no configured device matched */ 215 rv = UNSUPP; /* most ADB device types are unsupported */ 216 217 /* print out what kind of ADB device we have found */ 218 aprint_normal("%s addr %d: ", name, aa_args->adbaddr); 219 switch(aa_args->origaddr) { 220 case 0: 221 #ifdef DIAGNOSTIC 222 aprint_normal("ADB event device"); 223 #endif 224 rv = UNCONF; 225 break; 226 #ifdef DIAGNOSTIC 227 case ADBADDR_SECURE: 228 aprint_normal("security dongle (%d)", 229 aa_args->handler_id); 230 break; 231 #endif 232 case ADBADDR_MAP: 233 aprint_normal("mapped device (%d)", 234 aa_args->handler_id); 235 rv = UNCONF; 236 break; 237 case ADBADDR_REL: 238 aprint_normal("relative positioning device (%d)", 239 aa_args->handler_id); 240 rv = UNCONF; 241 break; 242 #ifdef DIAGNOSTIC 243 case ADBADDR_ABS: 244 switch (aa_args->handler_id) { 245 case ADB_ARTPAD: 246 aprint_normal("WACOM ArtPad II"); 247 break; 248 default: 249 aprint_normal("absolute positioning device (%d)", 250 aa_args->handler_id); 251 break; 252 } 253 break; 254 case ADBADDR_DATATX: 255 aprint_normal("data transfer device (modem?) (%d)", 256 aa_args->handler_id); 257 break; 258 case ADBADDR_MISC: 259 switch (aa_args->handler_id) { 260 case ADB_POWERKEY: 261 aprint_normal("Sophisticated Circuits PowerKey"); 262 break; 263 default: 264 aprint_normal("misc. device (remote control?) (%d)", 265 aa_args->handler_id); 266 break; 267 } 268 break; 269 default: 270 aprint_normal("unknown type device, (handler %d)", 271 aa_args->handler_id); 272 break; 273 #endif /* DIAGNOSTIC */ 274 } 275 } else /* a device matched and was configured */ 276 aprint_normal(" addr %d: ", aa_args->adbaddr); 277 278 return (rv); 279 } 280 281 282 /* 283 * adb_op_sync 284 * 285 * This routine does exactly what the adb_op routine does, except that after 286 * the adb_op is called, it waits until the return value is present before 287 * returning. 288 * 289 * NOTE: The user specified compRout is ignored, since this routine specifies 290 * its own to adb_op, which is why you really called this in the first place 291 * anyway. 292 */ 293 int 294 adb_op_sync(Ptr buffer, Ptr compRout, Ptr data, short command) 295 { 296 int result; 297 volatile int flag = 0; 298 299 result = ADBOp(buffer, (void *)adb_op_comprout, __UNVOLATILE(&flag), 300 command); /* send command */ 301 if (result == 0) { /* send ok? */ 302 adb_spin(&flag); 303 if (!flag) 304 result = -2; 305 } 306 307 return result; 308 } 309 310 /* 311 * adb_spin 312 * 313 * Implements a spin-wait with timeout to be used for synchronous 314 * operations on the ADB bus. 315 * 316 * Total time to wait is calculated as follows: 317 * - Tlt (stop to start time): 260 usec 318 * - start bit: 100 usec 319 * - up to 8 data bytes: 64 * 100 usec = 6400 usec 320 * - stop bit (with SRQ): 140 usec 321 * Total: 6900 usec 322 * 323 * This is the total time allowed by the specification. Any device that 324 * doesn't conform to this will fail to operate properly on some Apple 325 * systems. In spite of this we double the time to wait; Cuda-based 326 * systems apparently queue commands and allow the main CPU to continue 327 * processing (how radical!). To be safe, allow time for two complete 328 * ADB transactions to occur. 329 */ 330 void 331 adb_spin(volatile int *fp) 332 { 333 int tmout; 334 335 for (tmout = 13800; *fp == 0 && tmout >= 10; tmout -= 10) 336 delay(10); 337 if (*fp == 0 && tmout > 0) 338 delay(tmout); 339 } 340 341 342 /* 343 * adb_op_comprout 344 * 345 * This function is used by the adb_op_sync routine so it knows when the 346 * function is done. 347 */ 348 void 349 adb_op_comprout(void) 350 { 351 __asm("movw #1,%a2@ | update flag value"); 352 } 353
Indexes created Tue Sep 23 01:09:51 GMT 2025