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/*
* Copyright (C) 2013 Imagination Technologies
* Author: Paul Burton <paul.burton@imgtec.com>
*
* Based on smp-cmp.c:
* Copyright (C) 2007 MIPS Technologies, Inc.
* Author: Chris Dearman (chris@mips.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/irqchip/mips-gic.h>
#include <linux/printk.h>
#include <asm/mips-cpc.h>
#include <asm/smp-ops.h>
void gic_send_ipi_single(int cpu, unsigned int action)
{
unsigned long flags;
unsigned int intr;
unsigned int core = cpu_data[cpu].core;
pr_debug("CPU%d: %s cpu %d action %u status %08x\n",
smp_processor_id(), __func__, cpu, action, read_c0_status());
local_irq_save(flags);
switch (action) {
case SMP_CALL_FUNCTION:
intr = plat_ipi_call_int_xlate(cpu);
break;
case SMP_RESCHEDULE_YOURSELF:
intr = plat_ipi_resched_int_xlate(cpu);
break;
default:
BUG();
}
gic_send_ipi(intr);
if (mips_cpc_present() && (core != current_cpu_data.core)) {
while (!cpumask_test_cpu(cpu, &cpu_coherent_mask)) {
mips_cm_lock_other(core, 0);
mips_cpc_lock_other(core);
write_cpc_co_cmd(CPC_Cx_CMD_PWRUP);
mips_cpc_unlock_other();
mips_cm_unlock_other();
}
}
local_irq_restore(flags);
}
void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action)
{
unsigned int i;
for_each_cpu(i, mask)
gic_send_ipi_single(i, action);
}
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