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/* $NetBSD: mainbus.c,v 1.9 2021/08/07 16:18:51 thorpej Exp $ */
/*-
* Copyright (c) 2014 Michael Lorenz
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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: mainbus.c,v 1.9 2021/08/07 16:18:51 thorpej Exp $");
#include "opt_multiprocessor.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <mips/cache.h>
#include <mips/cpuregs.h>
#include <mips/ingenic/ingenic_regs.h>
#include "opt_ingenic.h"
#include "locators.h"
static int mainbus_match(device_t, cfdata_t, void *);
static void mainbus_attach(device_t, device_t, void *);
static int mainbus_print(void *, const char *);
CFATTACH_DECL_NEW(mainbus, 0,
mainbus_match, mainbus_attach, NULL, NULL);
/* There can be only one. */
int mainbus_found = 0;
struct mainbusdev {
const char *md_name;
};
struct mainbusdev mainbusdevs[] = {
{ "cpu", },
#ifdef MULTIPROCESSOR
{ "cpu", },
#endif
{ "apbus", },
{ NULL, }
};
static int
mainbus_match(device_t parent, cfdata_t match, void *aux)
{
if (mainbus_found)
return (0);
return (1);
}
static void
mainbus_attach(device_t parent, device_t self, void *aux)
{
const struct mainbusdev *md;
mainbus_found = 1;
printf("\n");
for (md = mainbusdevs; md->md_name != NULL; md++) {
struct mainbusdev ma = *md;
config_found(self, &ma, mainbus_print, CFARGS_NONE);
}
#ifdef INGENIC_DEBUG
printf("TFR: %08x\n", readreg(JZ_TC_TFR));
printf("TMR: %08x\n", readreg(JZ_TC_TMR));
/* send ourselves an IPI */
mips_cp0_corembox_write(0x12345678, 0);
delay(1000);
/* send the other core an IPI */
mips_cp0_corembox_write(0x12345678, 1);
delay(1000);
#endif
}
static int
mainbus_print(void *aux, const char *pnp)
{
return (QUIET);
}
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