776597a46f
operations to access the PRAM RTC, etc. in the IIsi and Cuda cases. Thanks to Martin Husemann for pointing out the flaw. This is a slightly more thorough workaround for the issue Martin found in PR 37611, as it affected more than just adb_read_date_time().
331 lines
8.4 KiB
C
331 lines
8.4 KiB
C
/* $NetBSD: adb.c,v 1.52 2008/04/03 05:03:23 scottr Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1994 Bradley A. Grantham
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Bradley A. Grantham.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: adb.c,v 1.52 2008/04/03 05:03:23 scottr Exp $");
|
|
|
|
#include "opt_adb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/select.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/cpu.h>
|
|
#include <sys/intr.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
|
|
#include <mac68k/mac68k/macrom.h>
|
|
#include <mac68k/dev/adbvar.h>
|
|
#include <mac68k/dev/akbdvar.h>
|
|
|
|
#include "aed.h" /* ADB Event Device for compatibility */
|
|
|
|
/*
|
|
* Function declarations.
|
|
*/
|
|
static int adbmatch(struct device *, struct cfdata *, void *);
|
|
static void adbattach(struct device *, struct device *, void *);
|
|
static int adbprint(void *, const char *);
|
|
void adb_config_interrupts(struct device *);
|
|
|
|
extern void adb_jadbproc(void);
|
|
|
|
/*
|
|
* Global variables.
|
|
*/
|
|
int adb_polling = 0; /* Are we polling? (Debugger mode) */
|
|
#ifdef ADB_DEBUG
|
|
int adb_debug = 0; /* Output debugging messages */
|
|
#endif /* ADB_DEBUG */
|
|
|
|
extern struct mac68k_machine_S mac68k_machine;
|
|
extern int adbHardware;
|
|
extern char *adbHardwareDescr[];
|
|
|
|
/*
|
|
* Driver definition.
|
|
*/
|
|
CFATTACH_DECL(adb, sizeof(struct device),
|
|
adbmatch, adbattach, NULL, NULL);
|
|
|
|
static int
|
|
adbmatch(struct device *parent, struct cfdata *cf, void *aux)
|
|
{
|
|
static int adb_matched = 0;
|
|
|
|
/* Allow only one instance. */
|
|
if (adb_matched)
|
|
return (0);
|
|
|
|
adb_matched = 1;
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
adbattach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
|
|
adb_softintr_cookie = softint_establish(SOFTINT_SERIAL,
|
|
(void (*)(void *))adb_soft_intr, NULL);
|
|
printf("\n");
|
|
|
|
/*
|
|
* Defer configuration until interrupts are enabled.
|
|
*/
|
|
config_interrupts(self, adb_config_interrupts);
|
|
}
|
|
|
|
void
|
|
adb_config_interrupts(struct device *self)
|
|
{
|
|
ADBDataBlock adbdata;
|
|
struct adb_attach_args aa_args;
|
|
int totaladbs;
|
|
int adbindex, adbaddr;
|
|
|
|
printf("%s", self->dv_xname);
|
|
adb_polling = 1;
|
|
|
|
#ifdef MRG_ADB
|
|
if (!mrg_romready()) {
|
|
printf(": no ROM ADB driver in this kernel for this machine\n");
|
|
return;
|
|
}
|
|
|
|
#ifdef ADB_DEBUG
|
|
if (adb_debug)
|
|
printf("adb: call mrg_initadbintr\n");
|
|
#endif
|
|
|
|
mrg_initadbintr(); /* Mac ROM Glue okay to do ROM intr */
|
|
#ifdef ADB_DEBUG
|
|
if (adb_debug)
|
|
printf("adb: returned from mrg_initadbintr\n");
|
|
#endif
|
|
|
|
/* ADBReInit pre/post-processing */
|
|
JADBProc = adb_jadbproc;
|
|
|
|
/* Initialize ADB */
|
|
#ifdef ADB_DEBUG
|
|
if (adb_debug)
|
|
printf("adb: calling ADBAlternateInit.\n");
|
|
#endif
|
|
|
|
printf(" (mrg)");
|
|
ADBAlternateInit();
|
|
#else
|
|
ADBReInit();
|
|
printf(" (direct, %s)", adbHardwareDescr[adbHardware]);
|
|
#endif /* MRG_ADB */
|
|
|
|
#ifdef ADB_DEBUG
|
|
if (adb_debug)
|
|
printf("adb: done with ADBReInit\n");
|
|
#endif
|
|
|
|
totaladbs = CountADBs();
|
|
|
|
printf(": %d target%s\n", totaladbs, (totaladbs == 1) ? "" : "s");
|
|
|
|
#if NAED > 0
|
|
/* ADB event device for compatibility */
|
|
aa_args.origaddr = 0;
|
|
aa_args.adbaddr = 0;
|
|
aa_args.handler_id = 0;
|
|
(void)config_found(self, &aa_args, adbprint);
|
|
#endif
|
|
|
|
/* for each ADB device */
|
|
for (adbindex = 1; adbindex <= totaladbs; adbindex++) {
|
|
/* Get the ADB information */
|
|
adbaddr = GetIndADB(&adbdata, adbindex);
|
|
|
|
aa_args.origaddr = (int)(adbdata.origADBAddr);
|
|
aa_args.adbaddr = adbaddr;
|
|
aa_args.handler_id = (int)(adbdata.devType);
|
|
|
|
(void)config_found(self, &aa_args, adbprint);
|
|
}
|
|
adb_polling = 0;
|
|
}
|
|
|
|
|
|
int
|
|
adbprint(void *args, const char *name)
|
|
{
|
|
struct adb_attach_args *aa_args = (struct adb_attach_args *)args;
|
|
int rv = UNCONF;
|
|
|
|
if (name) { /* no configured device matched */
|
|
rv = UNSUPP; /* most ADB device types are unsupported */
|
|
|
|
/* print out what kind of ADB device we have found */
|
|
aprint_normal("%s addr %d: ", name, aa_args->adbaddr);
|
|
switch(aa_args->origaddr) {
|
|
#ifdef DIAGNOSTIC
|
|
case 0:
|
|
aprint_normal("ADB event device");
|
|
rv = UNCONF;
|
|
break;
|
|
case ADBADDR_SECURE:
|
|
aprint_normal("security dongle (%d)",
|
|
aa_args->handler_id);
|
|
break;
|
|
#endif
|
|
case ADBADDR_MAP:
|
|
aprint_normal("mapped device (%d)",
|
|
aa_args->handler_id);
|
|
rv = UNCONF;
|
|
break;
|
|
case ADBADDR_REL:
|
|
aprint_normal("relative positioning device (%d)",
|
|
aa_args->handler_id);
|
|
rv = UNCONF;
|
|
break;
|
|
#ifdef DIAGNOSTIC
|
|
case ADBADDR_ABS:
|
|
switch (aa_args->handler_id) {
|
|
case ADB_ARTPAD:
|
|
aprint_normal("WACOM ArtPad II");
|
|
break;
|
|
default:
|
|
aprint_normal("absolute positioning device (%d)",
|
|
aa_args->handler_id);
|
|
break;
|
|
}
|
|
break;
|
|
case ADBADDR_DATATX:
|
|
aprint_normal("data transfer device (modem?) (%d)",
|
|
aa_args->handler_id);
|
|
break;
|
|
case ADBADDR_MISC:
|
|
switch (aa_args->handler_id) {
|
|
case ADB_POWERKEY:
|
|
aprint_normal("Sophisticated Circuits PowerKey");
|
|
break;
|
|
default:
|
|
aprint_normal("misc. device (remote control?) (%d)",
|
|
aa_args->handler_id);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
aprint_normal("unknown type device, (handler %d)",
|
|
aa_args->handler_id);
|
|
break;
|
|
#endif /* DIAGNOSTIC */
|
|
}
|
|
} else /* a device matched and was configured */
|
|
aprint_normal(" addr %d: ", aa_args->adbaddr);
|
|
|
|
return (rv);
|
|
}
|
|
|
|
|
|
/*
|
|
* adb_op_sync
|
|
*
|
|
* This routine does exactly what the adb_op routine does, except that after
|
|
* the adb_op is called, it waits until the return value is present before
|
|
* returning.
|
|
*
|
|
* NOTE: The user specified compRout is ignored, since this routine specifies
|
|
* it's own to adb_op, which is why you really called this in the first place
|
|
* anyway.
|
|
*/
|
|
int
|
|
adb_op_sync(Ptr buffer, Ptr compRout, Ptr data, short command)
|
|
{
|
|
int result;
|
|
volatile int flag = 0;
|
|
|
|
result = ADBOp(buffer, (void *)adb_op_comprout, __UNVOLATILE(&flag),
|
|
command); /* send command */
|
|
if (result == 0) { /* send ok? */
|
|
adb_spin(&flag);
|
|
if (!flag)
|
|
result = -2;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* adb_spin
|
|
*
|
|
* Implements a spin-wait with timeout to be used for synchronous
|
|
* operations on the ADB bus.
|
|
*
|
|
* Total time to wait is calculated as follows:
|
|
* - Tlt (stop to start time): 260 usec
|
|
* - start bit: 100 usec
|
|
* - up to 8 data bytes: 64 * 100 usec = 6400 usec
|
|
* - stop bit (with SRQ): 140 usec
|
|
* Total: 6900 usec
|
|
*
|
|
* This is the total time allowed by the specification. Any device that
|
|
* doesn't conform to this will fail to operate properly on some Apple
|
|
* systems. In spite of this we double the time to wait; Cuda-based
|
|
* systems apparently queue commands and allow the main CPU to continue
|
|
* processing (how radical!). To be safe, allow time for two complete
|
|
* ADB transactions to occur.
|
|
*/
|
|
void
|
|
adb_spin(volatile int *fp)
|
|
{
|
|
int tmout;
|
|
|
|
for (tmout = 13800; *fp == 0 && tmout >= 10; tmout -= 10)
|
|
delay(10);
|
|
if (*fp == 0 && tmout > 0)
|
|
delay(tmout);
|
|
}
|
|
|
|
|
|
/*
|
|
* adb_op_comprout
|
|
*
|
|
* This function is used by the adb_op_sync routine so it knows when the
|
|
* function is done.
|
|
*/
|
|
void
|
|
adb_op_comprout(void)
|
|
{
|
|
__asm("movw #1,%a2@ | update flag value");
|
|
}
|