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Diffstat (limited to 'arch/mips/kernel/smp-gic.c')
-rw-r--r--arch/mips/kernel/smp-gic.c53
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 000000000000..3bb1f92ab525
--- /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);
+}