git://bbs.cooldavid.org / net-next-2.6.git / blame
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|---|---|---|
| 367cd31e SS |
1 | /* |
| 2 | * OMAP4 machine specific smp.h | |
| 3 | * | |
| 4 | * Copyright (C) 2009 Texas Instruments, Inc. | |
| 5 | * | |
| 6 | * Author: | |
| 7 | * Santosh Shilimkar <santosh.shilimkar@ti.com> | |
| 8 | * | |
| 9 | * Interface functions needed for the SMP. This file is based on arm | |
| 10 | * realview smp platform. | |
| 11 | * Copyright (c) 2003 ARM Limited. | |
| 12 | * | |
| 13 | * This program is free software; you can redistribute it and/or modify | |
| 14 | * it under the terms of the GNU General Public License version 2 as | |
| 15 | * published by the Free Software Foundation. | |
| 16 | */ | |
| 17 | #ifndef OMAP_ARCH_SMP_H | |
| 18 | #define OMAP_ARCH_SMP_H | |
| 19 | ||
| 20 | #include <asm/hardware/gic.h> | |
| 21 | ||
| 367cd31e SS |
22 | /* Needed for secondary core boot */ |
| 23 | extern void omap_secondary_startup(void); | |
| 942e2c9e SS |
24 | extern u32 omap_modify_auxcoreboot0(u32 set_mask, u32 clear_mask); |
| 25 | extern void omap_auxcoreboot_addr(u32 cpu_addr); | |
| 3f9eaf09 | 26 | extern u32 omap_read_auxcoreboot0(void); |
| 367cd31e SS |
27 | |
| 28 | /* | |
| 29 | * We use Soft IRQ1 as the IPI | |
| 30 | */ | |
| 31 | static inline void smp_cross_call(const struct cpumask *mask) | |
| 32 | { | |
| 33 | gic_raise_softirq(mask, 1); | |
| 34 | } | |
| 35 | ||
| 36 | /* | |
| 37 | * Read MPIDR: Multiprocessor affinity register | |
| 38 | */ | |
| 39 | #define hard_smp_processor_id() \ | |
| 40 | ({ \ | |
| 41 | unsigned int cpunum; \ | |
| 42 | __asm__("mrc p15, 0, %0, c0, c0, 5" \ | |
| 43 | : "=r" (cpunum)); \ | |
| 44 | cpunum &= 0x0F; \ | |
| 45 | }) | |
| 46 | ||
| 47 | #endif |