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/*-
* Copyright (c) 2015 Andrew Turner
* 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 AUTHOR 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 AUTHOR 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>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/pcpu.h>
#include <sys/smp.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/intr.h>
#include <machine/smp.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_cpu.h>
#include <dev/psci/psci.h>
static int running_cpus;
int
platform_mp_probe(void)
{
int ncpus;
ncpus = ofw_cpu_early_foreach(NULL, true);
if (ncpus <= 1) {
mp_ncpus = 1;
return (0);
}
mp_ncpus = MIN(ncpus, MAXCPU);
return (1);
}
static boolean_t
virt_maxid(u_int id, phandle_t node, u_int addr_cells, pcell_t *reg)
{
if (mp_maxid < id)
mp_maxid = id;
return (true);
}
void
platform_mp_setmaxid(void)
{
mp_maxid = PCPU_GET(cpuid);
ofw_cpu_early_foreach(virt_maxid, true);
}
static boolean_t
virt_start_ap(u_int id, phandle_t node, u_int addr_cells, pcell_t *reg)
{
int err;
if (running_cpus >= mp_ncpus)
return (false);
running_cpus++;
err = psci_cpu_on(*reg, pmap_kextract((vm_offset_t)mpentry), id);
if (err != PSCI_RETVAL_SUCCESS)
return (false);
return (true);
}
void
platform_mp_start_ap(void)
{
ofw_cpu_early_foreach(virt_start_ap, true);
}
void
platform_mp_init_secondary(void)
{
arm_init_secondary_ic();
}
void
platform_ipi_send(cpuset_t cpus, u_int ipi)
{
pic_ipi_send(cpus, ipi);
}
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