adb.c revision 1.47
1 /* $NetBSD: adb.c,v 1.47 2005/06/16 22:43:36 jmc 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bradley A. Grantham. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: adb.c,v 1.47 2005/06/16 22:43:36 jmc Exp $"); 35 36 #include "opt_adb.h" 37 38 #include <sys/param.h> 39 #include <sys/device.h> 40 #include <sys/fcntl.h> 41 #include <sys/poll.h> 42 #include <sys/select.h> 43 #include <sys/proc.h> 44 #include <sys/signalvar.h> 45 #include <sys/systm.h> 46 47 #include <machine/autoconf.h> 48 #include <machine/cpu.h> 49 50 #include <mac68k/mac68k/macrom.h> 51 #include <mac68k/dev/adbvar.h> 52 #include <mac68k/dev/akbdvar.h> 53 54 #include "aed.h" /* ADB Event Device for compatibility */ 55 56 /* 57 * Function declarations. 58 */ 59 static int adbmatch(struct device *, struct cfdata *, void *); 60 static void adbattach(struct device *, struct device *, void *); 61 static int adbprint(void *, const char *); 62 void adb_config_interrupts(struct device *); 63 64 extern void adb_jadbproc(void); 65 66 /* 67 * Global variables. 68 */ 69 int adb_polling = 0; /* Are we polling? (Debugger mode) */ 70 #ifdef ADB_DEBUG 71 int adb_debug = 0; /* Output debugging messages */ 72 #endif /* ADB_DEBUG */ 73 74 extern struct mac68k_machine_S mac68k_machine; 75 extern int adbHardware; 76 extern char *adbHardwareDescr[]; 77 78 /* 79 * Driver definition. 80 */ 81 CFATTACH_DECL(adb, sizeof(struct device), 82 adbmatch, adbattach, NULL, NULL); 83 84 static int 85 adbmatch(struct device *parent, struct cfdata *cf, void *aux) 86 { 87 static int adb_matched = 0; 88 89 /* Allow only one instance. */ 90 if (adb_matched) 91 return (0); 92 93 adb_matched = 1; 94 return (1); 95 } 96 97 static void 98 adbattach(struct device *parent, struct device *self, void *aux) 99 { 100 printf("\n"); 101 102 /* 103 * Defer configuration until interrupts are enabled. 104 */ 105 config_interrupts(self, adb_config_interrupts); 106 } 107 108 void 109 adb_config_interrupts(struct device *self) 110 { 111 ADBDataBlock adbdata; 112 struct adb_attach_args aa_args; 113 int totaladbs; 114 int adbindex, adbaddr; 115 116 printf("%s", self->dv_xname); 117 adb_polling = 1; 118 119 #ifdef MRG_ADB 120 if (!mrg_romready()) { 121 printf(": no ROM ADB driver in this kernel for this machine\n"); 122 return; 123 } 124 125 #ifdef ADB_DEBUG 126 if (adb_debug) 127 printf("adb: call mrg_initadbintr\n"); 128 #endif 129 130 mrg_initadbintr(); /* Mac ROM Glue okay to do ROM intr */ 131 #ifdef ADB_DEBUG 132 if (adb_debug) 133 printf("adb: returned from mrg_initadbintr\n"); 134 #endif 135 136 /* ADBReInit pre/post-processing */ 137 JADBProc = adb_jadbproc; 138 139 /* Initialize ADB */ 140 #ifdef ADB_DEBUG 141 if (adb_debug) 142 printf("adb: calling ADBAlternateInit.\n"); 143 #endif 144 145 printf(" (mrg)"); 146 ADBAlternateInit(); 147 #else 148 ADBReInit(); 149 printf(" (direct, %s)", adbHardwareDescr[adbHardware]); 150 #endif /* MRG_ADB */ 151 152 #ifdef ADB_DEBUG 153 if (adb_debug) 154 printf("adb: done with ADBReInit\n"); 155 #endif 156 157 totaladbs = CountADBs(); 158 159 printf(": %d target%s\n", totaladbs, (totaladbs == 1) ? "" : "s"); 160 161 #if NAED > 0 162 /* ADB event device for compatibility */ 163 aa_args.origaddr = 0; 164 aa_args.adbaddr = 0; 165 aa_args.handler_id = 0; 166 (void)config_found(self, &aa_args, adbprint); 167 #endif 168 169 /* for each ADB device */ 170 for (adbindex = 1; adbindex <= totaladbs; adbindex++) { 171 /* Get the ADB information */ 172 adbaddr = GetIndADB(&adbdata, adbindex); 173 174 aa_args.origaddr = (int)(adbdata.origADBAddr); 175 aa_args.adbaddr = adbaddr; 176 aa_args.handler_id = (int)(adbdata.devType); 177 178 (void)config_found(self, &aa_args, adbprint); 179 } 180 adb_polling = 0; 181 } 182 183 184 int 185 adbprint(void *args, const char *name) 186 { 187 struct adb_attach_args *aa_args = (struct adb_attach_args *)args; 188 int rv = UNCONF; 189 190 if (name) { /* no configured device matched */ 191 rv = UNSUPP; /* most ADB device types are unsupported */ 192 193 /* print out what kind of ADB device we have found */ 194 aprint_normal("%s addr %d: ", name, aa_args->adbaddr); 195 switch(aa_args->origaddr) { 196 #ifdef DIAGNOSTIC 197 case 0: 198 aprint_normal("ADB event device"); 199 rv = UNCONF; 200 break; 201 case ADBADDR_SECURE: 202 aprint_normal("security dongle (%d)", 203 aa_args->handler_id); 204 break; 205 #endif 206 case ADBADDR_MAP: 207 aprint_normal("mapped device (%d)", 208 aa_args->handler_id); 209 rv = UNCONF; 210 break; 211 case ADBADDR_REL: 212 aprint_normal("relative positioning device (%d)", 213 aa_args->handler_id); 214 rv = UNCONF; 215 break; 216 #ifdef DIAGNOSTIC 217 case ADBADDR_ABS: 218 switch (aa_args->handler_id) { 219 case ADB_ARTPAD: 220 aprint_normal("WACOM ArtPad II"); 221 break; 222 default: 223 aprint_normal("absolute positioning device (%d)", 224 aa_args->handler_id); 225 break; 226 } 227 break; 228 case ADBADDR_DATATX: 229 aprint_normal("data transfer device (modem?) (%d)", 230 aa_args->handler_id); 231 break; 232 case ADBADDR_MISC: 233 switch (aa_args->handler_id) { 234 case ADB_POWERKEY: 235 aprint_normal("Sophisticated Circuits PowerKey"); 236 break; 237 default: 238 aprint_normal("misc. device (remote control?) (%d)", 239 aa_args->handler_id); 240 break; 241 } 242 break; 243 default: 244 aprint_normal("unknown type device, (handler %d)", 245 aa_args->handler_id); 246 break; 247 #endif /* DIAGNOSTIC */ 248 } 249 } else /* a device matched and was configured */ 250 aprint_normal(" addr %d: ", aa_args->adbaddr); 251 252 return (rv); 253 } 254 255 256 /* 257 * adb_op_sync 258 * 259 * This routine does exactly what the adb_op routine does, except that after 260 * the adb_op is called, it waits until the return value is present before 261 * returning. 262 * 263 * NOTE: The user specified compRout is ignored, since this routine specifies 264 * it's own to adb_op, which is why you really called this in the first place 265 * anyway. 266 */ 267 int 268 adb_op_sync(Ptr buffer, Ptr compRout, Ptr data, short command) 269 { 270 int tmout; 271 int result; 272 volatile int flag = 0; 273 274 result = ADBOp(buffer, (void *)adb_op_comprout, __UNVOLATILE(&flag), 275 command); /* send command */ 276 if (result == 0) { /* send ok? */ 277 /* 278 * Total time to wait is calculated as follows: 279 * - Tlt (stop to start time): 260 usec 280 * - start bit: 100 usec 281 * - up to 8 data bytes: 64 * 100 usec = 6400 usec 282 * - stop bit (with SRQ): 140 usec 283 * Total: 6900 usec 284 * 285 * This is the total time allowed by the specification. Any 286 * device that doesn't conform to this will fail to operate 287 * properly on some Apple systems. In spite of this we 288 * double the time to wait; some Cuda-based apparently 289 * queues some commands and allows the main CPU to continue 290 * processing (radical concept, eh?). To be safe, allow 291 * time for two complete ADB transactions to occur. 292 */ 293 for (tmout = 13800; !flag && tmout >= 10; tmout -= 10) 294 delay(10); 295 if (!flag && tmout > 0) 296 delay(tmout); 297 298 if (!flag) 299 result = -2; 300 } 301 302 return result; 303 } 304 305 306 /* 307 * adb_op_comprout 308 * 309 * This function is used by the adb_op_sync routine so it knows when the 310 * function is done. 311 */ 312 void 313 adb_op_comprout(void) 314 { 315 asm("movw #1,%a2@ | update flag value"); 316 } 317
Indexes created Tue Sep 23 02:09:52 GMT 2025