diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/include/asm/smp.h')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/include/asm/smp.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/smp.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/smp.h new file mode 100644 index 000000000..651a53695 --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/include/asm/smp.h @@ -0,0 +1,87 @@ +/* + * 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 */ |