mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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1a29ef8e97
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19815 3c298f89-4303-0410-b956-a3cf2f4a3e73
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*
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* arch/ubicom32/include/asm/smp.h
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* SMP definitions for Ubicom32 architecture.
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*
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* (C) Copyright 2009, Ubicom, Inc.
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*
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* This file is part of the Ubicom32 Linux Kernel Port.
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*
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* The Ubicom32 Linux Kernel Port is free software: you can redistribute
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* it and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Ubicom32 Linux Kernel Port is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Ubicom32 Linux Kernel Port. If not,
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* see <http://www.gnu.org/licenses/>.
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*
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* Ubicom32 implementation derived from (with many thanks):
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* arch/m68knommu
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* arch/blackfin
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* arch/parisc
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*/
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#ifndef _ASM_UBICOM32_SMP_H
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#define _ASM_UBICOM32_SMP_H
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#ifndef CONFIG_SMP
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#error you should not include smp.h if smp is off
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#endif
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#ifndef ASSEMBLY
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#include <linux/bitops.h>
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/ip5000.h>
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typedef unsigned long address_t;
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extern unsigned int smp_ipi_irq;
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/*
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* This magic constant controls our willingness to transfer
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* a process across CPUs.
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*
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* Such a transfer incurs cache and tlb
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* misses. The current value is inherited from i386. Still needs
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* to be tuned for parisc.
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*/
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#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */
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#define NO_PROC_ID 0xFF /* No processor magic marker */
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#define ANY_PROC_ID 0xFF /* Any processor magic marker */
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#ifdef CONFIG_SMP
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#define raw_smp_processor_id() (current_thread_info()->cpu)
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#endif /* CONFIG_SMP */
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static inline int __cpu_disable (void)
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{
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return 0;
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}
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static inline void __cpu_die (unsigned int cpu)
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{
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while(1) {
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};
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}
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extern int __cpu_up(unsigned int cpu);
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extern void smp_send_timer_all(void);
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extern void smp_timer_broadcast(const struct cpumask *mask);
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extern void smp_set_affinity(unsigned int irq, const struct cpumask *dest);
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extern void arch_send_call_function_single_ipi(int cpu);
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#define arch_send_call_function_ipi_mask arch_send_call_function_ipi_mask
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extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
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/*
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* TODO: Once these are fully tested, we should turn them into
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* inline macros for performance.
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*/
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extern unsigned long smp_get_affinity(unsigned int irq, int *all);
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extern void smp_reset_ipi(unsigned long mask);
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#endif /* !ASSEMBLY */
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#endif /* _ASM_UBICOM32_SMP_H */
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