blk: rq_data_dir() should not return a boolean
[cris-mirror.git] / arch / arm / mach-shmobile / smp-emev2.c
blobbaff3b5efed8c31b5e1c5cd18e21e4348dcc1360
1 /*
2 * SMP support for Emma Mobile EV2
4 * Copyright (C) 2012 Renesas Solutions Corp.
5 * Copyright (C) 2012 Magnus Damm
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/smp.h>
19 #include <linux/spinlock.h>
20 #include <linux/io.h>
21 #include <linux/delay.h>
22 #include <asm/smp_plat.h>
23 #include <asm/smp_scu.h>
24 #include "common.h"
26 #define EMEV2_SCU_BASE 0x1e000000
27 #define EMEV2_SMU_BASE 0xe0110000
28 #define SMU_GENERAL_REG0 0x7c0
30 static int emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
32 arch_send_wakeup_ipi_mask(cpumask_of(cpu_logical_map(cpu)));
33 return 0;
36 static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
38 void __iomem *smu;
40 /* Tell ROM loader about our vector (in headsmp.S) */
41 smu = ioremap(EMEV2_SMU_BASE, PAGE_SIZE);
42 if (smu) {
43 iowrite32(__pa(shmobile_boot_vector), smu + SMU_GENERAL_REG0);
44 iounmap(smu);
47 /* setup EMEV2 specific SCU bits */
48 shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
49 shmobile_smp_scu_prepare_cpus(max_cpus);
52 struct smp_operations emev2_smp_ops __initdata = {
53 .smp_prepare_cpus = emev2_smp_prepare_cpus,
54 .smp_boot_secondary = emev2_boot_secondary,