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/*
* arch/ubicom32/include/asm/smp.h
* SMP definitions for Ubicom32 architecture.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_SMP_H
#define _ASM_UBICOM32_SMP_H
#ifndef CONFIG_SMP
#error you should not include smp.h if smp is off
#endif
#ifndef ASSEMBLY
#include <linux/bitops.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <asm/ip5000.h>
typedef unsigned long address_t;
extern unsigned int smp_ipi_irq;
/*
* This magic constant controls our willingness to transfer
* a process across CPUs.
*
* Such a transfer incurs cache and tlb
* misses. The current value is inherited from i386. Still needs
* to be tuned for parisc.
*/
#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
#define NO_PROC_ID 0xFF /* No processor magic marker */
#define ANY_PROC_ID 0xFF /* Any processor magic marker */
#ifdef CONFIG_SMP
#define raw_smp_processor_id() (current_thread_info()->cpu)
#endif /* CONFIG_SMP */
static inline int __cpu_disable (void)
{
return 0;
}
static inline void __cpu_die (unsigned int cpu)
{
while(1) {
};
}
extern int __cpu_up(unsigned int cpu);
extern void smp_send_timer_all(void);
extern void smp_timer_broadcast(const struct cpumask *mask);
extern void smp_set_affinity(unsigned int irq, const struct cpumask *dest);
extern void arch_send_call_function_single_ipi(int cpu);
#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
/*
* TODO: Once these are fully tested, we should turn them into
* inline macros for performance.
*/
extern unsigned long smp_get_affinity(unsigned int irq, int *all);
extern void smp_reset_ipi(unsigned long mask);
#endif /* !ASSEMBLY */
#endif /* _ASM_UBICOM32_SMP_H */
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