1/*
 2 * Copyright (C) 2013 Imagination Technologies
 3 * Author: Paul Burton <paul.burton@imgtec.com>
 4 *
 5 * Based on smp-cmp.c:
 6 *  Copyright (C) 2007 MIPS Technologies, Inc.
 7 *  Author: Chris Dearman (chris@mips.com)
 8 *
 9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation;  either version 2 of the  License, or (at your
12 * option) any later version.
13 */
14
15#include <linux/irqchip/mips-gic.h>
16#include <linux/printk.h>
17
18#include <asm/mips-cpc.h>
19#include <asm/smp-ops.h>
20
21void gic_send_ipi_single(int cpu, unsigned int action)
22{
23	unsigned long flags;
24	unsigned int intr;
25	unsigned int core = cpu_data[cpu].core;
26
27	pr_debug("CPU%d: %s cpu %d action %u status %08x\n",
28		 smp_processor_id(), __func__, cpu, action, read_c0_status());
29
30	local_irq_save(flags);
31
32	switch (action) {
33	case SMP_CALL_FUNCTION:
34		intr = plat_ipi_call_int_xlate(cpu);
35		break;
36
37	case SMP_RESCHEDULE_YOURSELF:
38		intr = plat_ipi_resched_int_xlate(cpu);
39		break;
40
41	default:
42		BUG();
43	}
44
45	gic_send_ipi(intr);
46
47	if (mips_cpc_present() && (core != current_cpu_data.core)) {
48		while (!cpumask_test_cpu(cpu, &cpu_coherent_mask)) {
49			mips_cm_lock_other(core, 0);
50			mips_cpc_lock_other(core);
51			write_cpc_co_cmd(CPC_Cx_CMD_PWRUP);
52			mips_cpc_unlock_other();
53			mips_cm_unlock_other();
54		}
55	}
56
57	local_irq_restore(flags);
58}
59
60void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action)
61{
62	unsigned int i;
63
64	for_each_cpu(i, mask)
65		gic_send_ipi_single(i, action);
66}