330 lines
8.3 KiB
C
330 lines
8.3 KiB
C
/* $NetBSD: adb.c,v 1.45 2003/07/15 02:43:15 lukem Exp $ */
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/*
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* Copyright (C) 1994 Bradley A. Grantham
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bradley A. Grantham.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: adb.c,v 1.45 2003/07/15 02:43:15 lukem Exp $");
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#include "opt_adb.h"
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/fcntl.h>
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#include <sys/poll.h>
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#include <sys/select.h>
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#include <sys/proc.h>
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#include <sys/signalvar.h>
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#include <sys/systm.h>
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <mac68k/mac68k/macrom.h>
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#include <mac68k/dev/adbvar.h>
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#include <mac68k/dev/akbdvar.h>
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#include "aed.h" /* ADB Event Device for compatibility */
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/*
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* Function declarations.
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*/
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static int adbmatch __P((struct device *, struct cfdata *, void *));
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static void adbattach __P((struct device *, struct device *, void *));
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static int adbprint __P((void *, const char *));
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void adb_config_interrupts __P((struct device *));
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extern void adb_jadbproc __P((void));
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/*
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* Global variables.
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*/
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int adb_polling = 0; /* Are we polling? (Debugger mode) */
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#ifdef ADB_DEBUG
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int adb_debug = 0; /* Output debugging messages */
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#endif /* ADB_DEBUG */
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extern struct mac68k_machine_S mac68k_machine;
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extern int adbHardware;
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extern char *adbHardwareDescr[];
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/*
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* Driver definition.
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*/
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CFATTACH_DECL(adb, sizeof(struct device),
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adbmatch, adbattach, NULL, NULL);
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static int
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adbmatch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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static int adb_matched = 0;
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/* Allow only one instance. */
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if (adb_matched)
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return (0);
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adb_matched = 1;
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return (1);
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}
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static void
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adbattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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printf("\n");
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/*
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* Defer configuration until interrupts are enabled.
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*/
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config_interrupts(self, adb_config_interrupts);
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}
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void
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adb_config_interrupts(self)
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struct device *self;
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{
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ADBDataBlock adbdata;
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struct adb_attach_args aa_args;
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int totaladbs;
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int adbindex, adbaddr;
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printf("%s", self->dv_xname);
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adb_polling = 1;
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#ifdef MRG_ADB
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if (!mrg_romready()) {
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printf(": no ROM ADB driver in this kernel for this machine\n");
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return;
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}
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#ifdef ADB_DEBUG
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if (adb_debug)
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printf("adb: call mrg_initadbintr\n");
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#endif
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mrg_initadbintr(); /* Mac ROM Glue okay to do ROM intr */
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#ifdef ADB_DEBUG
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if (adb_debug)
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printf("adb: returned from mrg_initadbintr\n");
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#endif
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/* ADBReInit pre/post-processing */
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JADBProc = adb_jadbproc;
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/* Initialize ADB */
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#ifdef ADB_DEBUG
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if (adb_debug)
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printf("adb: calling ADBAlternateInit.\n");
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#endif
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printf(" (mrg)");
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ADBAlternateInit();
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#else
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ADBReInit();
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printf(" (direct, %s)", adbHardwareDescr[adbHardware]);
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#endif /* MRG_ADB */
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#ifdef ADB_DEBUG
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if (adb_debug)
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printf("adb: done with ADBReInit\n");
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#endif
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totaladbs = CountADBs();
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printf(": %d target%s\n", totaladbs, (totaladbs == 1) ? "" : "s");
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#if NAED > 0
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/* ADB event device for compatibility */
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aa_args.origaddr = 0;
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aa_args.adbaddr = 0;
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aa_args.handler_id = 0;
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(void)config_found(self, &aa_args, adbprint);
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#endif
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/* for each ADB device */
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for (adbindex = 1; adbindex <= totaladbs; adbindex++) {
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/* Get the ADB information */
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adbaddr = GetIndADB(&adbdata, adbindex);
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aa_args.origaddr = (int)(adbdata.origADBAddr);
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aa_args.adbaddr = adbaddr;
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aa_args.handler_id = (int)(adbdata.devType);
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(void)config_found(self, &aa_args, adbprint);
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}
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adb_polling = 0;
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}
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int
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adbprint(args, name)
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void *args;
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const char *name;
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{
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struct adb_attach_args *aa_args = (struct adb_attach_args *)args;
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int rv = UNCONF;
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if (name) { /* no configured device matched */
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rv = UNSUPP; /* most ADB device types are unsupported */
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/* print out what kind of ADB device we have found */
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aprint_normal("%s addr %d: ", name, aa_args->adbaddr);
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switch(aa_args->origaddr) {
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#ifdef DIAGNOSTIC
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case 0:
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aprint_normal("ADB event device");
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rv = UNCONF;
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break;
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case ADBADDR_SECURE:
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aprint_normal("security dongle (%d)",
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aa_args->handler_id);
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break;
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#endif
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case ADBADDR_MAP:
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aprint_normal("mapped device (%d)",
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aa_args->handler_id);
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rv = UNCONF;
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break;
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case ADBADDR_REL:
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aprint_normal("relative positioning device (%d)",
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aa_args->handler_id);
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rv = UNCONF;
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break;
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#ifdef DIAGNOSTIC
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case ADBADDR_ABS:
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switch (aa_args->handler_id) {
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case ADB_ARTPAD:
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aprint_normal("WACOM ArtPad II");
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break;
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default:
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aprint_normal("absolute positioning device (%d)",
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aa_args->handler_id);
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break;
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}
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break;
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case ADBADDR_DATATX:
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aprint_normal("data transfer device (modem?) (%d)",
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aa_args->handler_id);
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break;
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case ADBADDR_MISC:
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switch (aa_args->handler_id) {
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case ADB_POWERKEY:
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aprint_normal("Sophisticated Circuits PowerKey");
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break;
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default:
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aprint_normal("misc. device (remote control?) (%d)",
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aa_args->handler_id);
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break;
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}
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break;
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default:
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aprint_normal("unknown type device, (handler %d)",
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aa_args->handler_id);
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break;
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#endif /* DIAGNOSTIC */
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}
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} else /* a device matched and was configured */
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aprint_normal(" addr %d: ", aa_args->adbaddr);
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return (rv);
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}
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/*
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* adb_op_sync
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*
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* This routine does exactly what the adb_op routine does, except that after
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* the adb_op is called, it waits until the return value is present before
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* returning.
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*
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* NOTE: The user specified compRout is ignored, since this routine specifies
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* it's own to adb_op, which is why you really called this in the first place
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* anyway.
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*/
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int
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adb_op_sync(Ptr buffer, Ptr compRout, Ptr data, short command)
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{
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int tmout;
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int result;
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volatile int flag = 0;
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result = ADBOp(buffer, (void *)adb_op_comprout,
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(void *)&flag, command); /* send command */
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if (result == 0) { /* send ok? */
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/*
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* Total time to wait is calculated as follows:
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* - Tlt (stop to start time): 260 usec
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* - start bit: 100 usec
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* - up to 8 data bytes: 64 * 100 usec = 6400 usec
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* - stop bit (with SRQ): 140 usec
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* Total: 6900 usec
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*
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* This is the total time allowed by the specification. Any
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* device that doesn't conform to this will fail to operate
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* properly on some Apple systems. In spite of this we
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* double the time to wait; some Cuda-based apparently
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* queues some commands and allows the main CPU to continue
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* processing (radical concept, eh?). To be safe, allow
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* time for two complete ADB transactions to occur.
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*/
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for (tmout = 13800; !flag && tmout >= 10; tmout -= 10)
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delay(10);
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if (!flag && tmout > 0)
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delay(tmout);
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if (!flag)
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result = -2;
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}
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return result;
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}
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/*
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* adb_op_comprout
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*
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* This function is used by the adb_op_sync routine so it knows when the
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* function is done.
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*/
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void
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adb_op_comprout(void)
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{
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#ifdef __NetBSD__
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asm("movw #1,%a2@ | update flag value");
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#else /* for macos based testing */
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asm {
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move.w #1,(a2) } /* update flag value */
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#endif
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}
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