adb.c revision 1.50
1 /* $NetBSD: adb.c,v 1.50 2007/03/08 02:24:39 tsutsui 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 1.50 2007/03/08 02:24:39 tsutsui 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 { 100 101 adb_softintr_cookie = softintr_establish(IPL_SOFT, 102 (void (*)(void *))adb_soft_intr, NULL); 103 printf("\n"); 104 105 /* 106 * Defer configuration until interrupts are enabled. 107 */ 108 config_interrupts(self, adb_config_interrupts); 109 } 110 111 void 112 adb_config_interrupts(struct device *self) 113 { 114 ADBDataBlock adbdata; 115 struct adb_attach_args aa_args; 116 int totaladbs; 117 int adbindex, adbaddr; 118 119 printf("%s", self->dv_xname); 120 adb_polling = 1; 121 122 #ifdef MRG_ADB 123 if (!mrg_romready()) { 124 printf(": no ROM ADB driver in this kernel for this machine\n"); 125 return; 126 } 127 128 #ifdef ADB_DEBUG 129 if (adb_debug) 130 printf("adb: call mrg_initadbintr\n"); 131 #endif 132 133 mrg_initadbintr(); /* Mac ROM Glue okay to do ROM intr */ 134 #ifdef ADB_DEBUG 135 if (adb_debug) 136 printf("adb: returned from mrg_initadbintr\n"); 137 #endif 138 139 /* ADBReInit pre/post-processing */ 140 JADBProc = adb_jadbproc; 141 142 /* Initialize ADB */ 143 #ifdef ADB_DEBUG 144 if (adb_debug) 145 printf("adb: calling ADBAlternateInit.\n"); 146 #endif 147 148 printf(" (mrg)"); 149 ADBAlternateInit(); 150 #else 151 ADBReInit(); 152 printf(" (direct, %s)", adbHardwareDescr[adbHardware]); 153 #endif /* MRG_ADB */ 154 155 #ifdef ADB_DEBUG 156 if (adb_debug) 157 printf("adb: done with ADBReInit\n"); 158 #endif 159 160 totaladbs = CountADBs(); 161 162 printf(": %d target%s\n", totaladbs, (totaladbs == 1) ? "" : "s"); 163 164 #if NAED > 0 165 /* ADB event device for compatibility */ 166 aa_args.origaddr = 0; 167 aa_args.adbaddr = 0; 168 aa_args.handler_id = 0; 169 (void)config_found(self, &aa_args, adbprint); 170 #endif 171 172 /* for each ADB device */ 173 for (adbindex = 1; adbindex <= totaladbs; adbindex++) { 174 /* Get the ADB information */ 175 adbaddr = GetIndADB(&adbdata, adbindex); 176 177 aa_args.origaddr = (int)(adbdata.origADBAddr); 178 aa_args.adbaddr = adbaddr; 179 aa_args.handler_id = (int)(adbdata.devType); 180 181 (void)config_found(self, &aa_args, adbprint); 182 } 183 adb_polling = 0; 184 } 185 186 187 int 188 adbprint(void *args, const char *name) 189 { 190 struct adb_attach_args *aa_args = (struct adb_attach_args *)args; 191 int rv = UNCONF; 192 193 if (name) { /* no configured device matched */ 194 rv = UNSUPP; /* most ADB device types are unsupported */ 195 196 /* print out what kind of ADB device we have found */ 197 aprint_normal("%s addr %d: ", name, aa_args->adbaddr); 198 switch(aa_args->origaddr) { 199 #ifdef DIAGNOSTIC 200 case 0: 201 aprint_normal("ADB event device"); 202 rv = UNCONF; 203 break; 204 case ADBADDR_SECURE: 205 aprint_normal("security dongle (%d)", 206 aa_args->handler_id); 207 break; 208 #endif 209 case ADBADDR_MAP: 210 aprint_normal("mapped device (%d)", 211 aa_args->handler_id); 212 rv = UNCONF; 213 break; 214 case ADBADDR_REL: 215 aprint_normal("relative positioning device (%d)", 216 aa_args->handler_id); 217 rv = UNCONF; 218 break; 219 #ifdef DIAGNOSTIC 220 case ADBADDR_ABS: 221 switch (aa_args->handler_id) { 222 case ADB_ARTPAD: 223 aprint_normal("WACOM ArtPad II"); 224 break; 225 default: 226 aprint_normal("absolute positioning device (%d)", 227 aa_args->handler_id); 228 break; 229 } 230 break; 231 case ADBADDR_DATATX: 232 aprint_normal("data transfer device (modem?) (%d)", 233 aa_args->handler_id); 234 break; 235 case ADBADDR_MISC: 236 switch (aa_args->handler_id) { 237 case ADB_POWERKEY: 238 aprint_normal("Sophisticated Circuits PowerKey"); 239 break; 240 default: 241 aprint_normal("misc. device (remote control?) (%d)", 242 aa_args->handler_id); 243 break; 244 } 245 break; 246 default: 247 aprint_normal("unknown type device, (handler %d)", 248 aa_args->handler_id); 249 break; 250 #endif /* DIAGNOSTIC */ 251 } 252 } else /* a device matched and was configured */ 253 aprint_normal(" addr %d: ", aa_args->adbaddr); 254 255 return (rv); 256 } 257 258 259 /* 260 * adb_op_sync 261 * 262 * This routine does exactly what the adb_op routine does, except that after 263 * the adb_op is called, it waits until the return value is present before 264 * returning. 265 * 266 * NOTE: The user specified compRout is ignored, since this routine specifies 267 * it's own to adb_op, which is why you really called this in the first place 268 * anyway. 269 */ 270 int 271 adb_op_sync(Ptr buffer, Ptr compRout, Ptr data, short command) 272 { 273 int tmout; 274 int result; 275 volatile int flag = 0; 276 277 result = ADBOp(buffer, (void *)adb_op_comprout, __UNVOLATILE(&flag), 278 command); /* send command */ 279 if (result == 0) { /* send ok? */ 280 /* 281 * Total time to wait is calculated as follows: 282 * - Tlt (stop to start time): 260 usec 283 * - start bit: 100 usec 284 * - up to 8 data bytes: 64 * 100 usec = 6400 usec 285 * - stop bit (with SRQ): 140 usec 286 * Total: 6900 usec 287 * 288 * This is the total time allowed by the specification. Any 289 * device that doesn't conform to this will fail to operate 290 * properly on some Apple systems. In spite of this we 291 * double the time to wait; some Cuda-based apparently 292 * queues some commands and allows the main CPU to continue 293 * processing (radical concept, eh?). To be safe, allow 294 * time for two complete ADB transactions to occur. 295 */ 296 for (tmout = 13800; !flag && tmout >= 10; tmout -= 10) 297 delay(10); 298 if (!flag && tmout > 0) 299 delay(tmout); 300 301 if (!flag) 302 result = -2; 303 } 304 305 return result; 306 } 307 308 309 /* 310 * adb_op_comprout 311 * 312 * This function is used by the adb_op_sync routine so it knows when the 313 * function is done. 314 */ 315 void 316 adb_op_comprout(void) 317 { 318 __asm("movw #1,%a2@ | update flag value"); 319 } 320
Indexes created Tue Sep 23 02:09:52 GMT 2025