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/* MN10300 SMP support
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* Modified by Matsushita Electric Industrial Co., Ltd.
* Modifications:
* 13-Nov-2006 MEI Define IPI-IRQ number and add inline/macro function
* for SMP support.
* 22-Jan-2007 MEI Add the define related to SMP_BOOT_IRQ.
* 23-Feb-2007 MEI Add the define related to SMP icahce invalidate.
* 23-Jun-2008 MEI Delete INTC_IPI.
* 22-Jul-2008 MEI Add smp_nmi_call_function and related defines.
* 04-Aug-2008 MEI Delete USE_DOIRQ_CACHE_IPI.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_SMP_H
#define _ASM_SMP_H
#ifndef __ASSEMBLY__
#include <linux/threads.h>
#include <linux/cpumask.h>
#endif
#ifdef CONFIG_SMP
#include <proc/smp-regs.h>
#define RESCHEDULE_IPI 63
#define CALL_FUNC_SINGLE_IPI 192
#define LOCAL_TIMER_IPI 193
#define FLUSH_CACHE_IPI 194
#define CALL_FUNCTION_NMI_IPI 195
#define GDB_NMI_IPI 196
#define SMP_BOOT_IRQ 195
#define RESCHEDULE_GxICR_LV GxICR_LEVEL_6
#define CALL_FUNCTION_GxICR_LV GxICR_LEVEL_4
#define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4
#define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0
#define SMP_BOOT_GxICR_LV GxICR_LEVEL_0
#define TIME_OUT_COUNT_BOOT_IPI 100
#define DELAY_TIME_BOOT_IPI 75000
#ifndef __ASSEMBLY__
/**
* raw_smp_processor_id - Determine the raw CPU ID of the CPU running it
*
* What we really want to do is to use the CPUID hardware CPU register to get
* this information, but accesses to that aren't cached, and run at system bus
* speed, not CPU speed. A copy of this value is, however, stored in the
* thread_info struct, and that can be cached.
*
* An alternate way of dealing with this could be to use the EPSW.S bits to
* cache this information for systems with up to four CPUs.
*/
#if 0
#define raw_smp_processor_id() (CPUID)
#else
#define raw_smp_processor_id() (current_thread_info()->cpu)
#endif
static inline int cpu_logical_map(int cpu)
{
return cpu;
}
static inline int cpu_number_map(int cpu)
{
return cpu;
}
extern cpumask_t cpu_boot_map;
extern void smp_init_cpus(void);
extern void smp_cache_interrupt(void);
extern void send_IPI_allbutself(int irq);
extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
#ifdef CONFIG_HOTPLUG_CPU
extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);
#endif /* CONFIG_HOTPLUG_CPU */
#ifdef CONFIG_PREEMPT /* FIXME */
#define __frame \
({ \
struct pt_regs *f; \
preempt_disable(); \
f = ___frame[CPUID]; \
preempt_enable(); \
f; \
})
#else
#define __frame ___frame[CPUID]
#endif
#endif /* __ASSEMBLY__ */
#else /* CONFIG_SMP */
#ifndef __ASSEMBLY__
static inline void smp_init_cpus(void) {}
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_SMP */
#endif /* _ASM_SMP_H */
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