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72e20142b2
The GIC IPI functions aren't necessarily specific to the "CMP framework" SMP implementation, and will be used elsewhere in a subsequent commit. This patch adds cleaned up GIC IPI functions to a separate file which is compiled when a new CONFIG_MIPS_GIC_IPI Kconfig symbol is selected, and selects that symbol for CONFIG_MIPS_CMP. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6359/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* Copyright (C) 2013 Imagination Technologies
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* Author: Paul Burton <paul.burton@imgtec.com>
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*
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* Based on smp-cmp.c:
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* Copyright (C) 2007 MIPS Technologies, Inc.
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* Author: Chris Dearman (chris@mips.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/printk.h>
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#include <asm/gic.h>
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#include <asm/smp-ops.h>
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void gic_send_ipi_single(int cpu, unsigned int action)
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{
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unsigned long flags;
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unsigned int intr;
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pr_debug("CPU%d: %s cpu %d action %u status %08x\n",
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smp_processor_id(), __func__, cpu, action, read_c0_status());
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local_irq_save(flags);
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switch (action) {
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case SMP_CALL_FUNCTION:
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intr = plat_ipi_call_int_xlate(cpu);
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break;
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case SMP_RESCHEDULE_YOURSELF:
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intr = plat_ipi_resched_int_xlate(cpu);
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break;
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default:
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BUG();
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}
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gic_send_ipi(intr);
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local_irq_restore(flags);
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}
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void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action)
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{
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unsigned int i;
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for_each_cpu(i, mask)
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gic_send_ipi_single(i, action);
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}
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