128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/smp.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/hwfunc.h>
|
|
#include <machine/md_var.h>
|
|
#include <machine/smp.h>
|
|
|
|
#include <mips/cavium/octeon_pcmap_regs.h>
|
|
|
|
#include <contrib/octeon-sdk/cvmx.h>
|
|
#include <contrib/octeon-sdk/cvmx-interrupt.h>
|
|
|
|
/* XXX */
|
|
extern cvmx_bootinfo_t *octeon_bootinfo;
|
|
|
|
unsigned octeon_ap_boot = ~0;
|
|
|
|
void
|
|
platform_ipi_send(int cpuid)
|
|
{
|
|
cvmx_write_csr(CVMX_CIU_MBOX_SETX(cpuid), 1);
|
|
mips_wbflush();
|
|
}
|
|
|
|
void
|
|
platform_ipi_clear(void)
|
|
{
|
|
uint64_t action;
|
|
|
|
action = cvmx_read_csr(CVMX_CIU_MBOX_CLRX(PCPU_GET(cpuid)));
|
|
KASSERT(action == 1, ("unexpected IPIs: %#jx", (uintmax_t)action));
|
|
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(PCPU_GET(cpuid)), action);
|
|
}
|
|
|
|
int
|
|
platform_ipi_intrnum(void)
|
|
{
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
platform_init_ap(int cpuid)
|
|
{
|
|
unsigned ipi_int_mask, clock_int_mask;
|
|
|
|
/*
|
|
* Set the exception base.
|
|
*/
|
|
mips_wr_ebase(0x80000000 | cpuid);
|
|
|
|
/*
|
|
* Clear any pending IPIs.
|
|
*/
|
|
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(cpuid), 0xffffffff);
|
|
|
|
/*
|
|
* Set up interrupts.
|
|
*/
|
|
octeon_ciu_reset();
|
|
|
|
/*
|
|
* Unmask the clock and ipi interrupts.
|
|
*/
|
|
clock_int_mask = hard_int_mask(5);
|
|
ipi_int_mask = hard_int_mask(platform_ipi_intrnum());
|
|
set_intr_mask(ipi_int_mask | clock_int_mask);
|
|
|
|
mips_wbflush();
|
|
}
|
|
|
|
int
|
|
platform_num_processors(void)
|
|
{
|
|
return (bitcount32(octeon_bootinfo->core_mask));
|
|
}
|
|
|
|
struct cpu_group *
|
|
platform_smp_topo(void)
|
|
{
|
|
return (smp_topo_none());
|
|
}
|
|
|
|
int
|
|
platform_start_ap(int cpuid)
|
|
{
|
|
if (atomic_cmpset_32(&octeon_ap_boot, ~0, cpuid) == 0)
|
|
return (-1);
|
|
for (;;) {
|
|
DELAY(1000);
|
|
if (atomic_cmpset_32(&octeon_ap_boot, 0, ~0) != 0)
|
|
return (0);
|
|
printf("Waiting for cpu%d to start\n", cpuid);
|
|
}
|
|
}
|