107 lines
3 KiB
C
107 lines
3 KiB
C
/* 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 DEBUGGER_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 DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL
|
|
|
|
#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.
|
|
*/
|
|
#define arch_smp_processor_id() (CPUID)
|
|
#if 0
|
|
#define raw_smp_processor_id() (arch_smp_processor_id())
|
|
#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 */
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#else /* CONFIG_SMP */
|
|
#ifndef __ASSEMBLY__
|
|
|
|
static inline void smp_init_cpus(void) {}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* CONFIG_SMP */
|
|
|
|
#endif /* _ASM_SMP_H */
|