diff options
Diffstat (limited to 'arch/mips/kernel/smp-gic.c')
| -rw-r--r-- | arch/mips/kernel/smp-gic.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/mips/kernel/smp-gic.c b/arch/mips/kernel/smp-gic.c new file mode 100644 index 00000000000..3bb1f92ab52 --- /dev/null +++ b/arch/mips/kernel/smp-gic.c @@ -0,0 +1,53 @@ +/* + * 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/printk.h> + +#include <asm/gic.h> +#include <asm/smp-ops.h> + +void gic_send_ipi_single(int cpu, unsigned int action) +{ + unsigned long flags; + unsigned int intr; + + 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); + 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); +} |