/* * This file is subject to the terms and conditions of the GNU General * Public License. See the file "COPYING" in the main directory of this * archive for more details. * * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com) * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc. * Copyright (C) 2000, 2001, 2002 Ralf Baechle * Copyright (C) 2000, 2001 Broadcom Corporation
*/ #ifndef __ASM_SMP_H #define __ASM_SMP_H
/* Map from cpu id to sequential logical cpu number. This will only
not be idempotent when cpus failed to come on-line. */ externint __cpu_number_map[CONFIG_MIPS_NR_CPU_NR_MAP]; #define cpu_number_map(cpu) __cpu_number_map[cpu]
/* The reverse map from sequential logical cpu number to cpu id. */ externint __cpu_logical_map[NR_CPUS]; #define cpu_logical_map(cpu) __cpu_logical_map[cpu]
#define NO_PROC_ID (-1)
#define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */ #define SMP_CALL_FUNCTION 0x2 /* Octeon - Tell another core to flush its icache */ #define SMP_ICACHE_FLUSH 0x4
/* Mask of CPUs which are currently definitely operating coherently */ extern cpumask_t cpu_coherent_mask;
externunsignedint smp_max_threads __initdata;
extern asmlinkage void smp_bootstrap(void);
externvoid calculate_cpu_foreign_map(void);
asmlinkage void start_secondary(void);
/* * this function sends a 'reschedule' IPI to another CPU. * it goes straight through and wastes no time serializing * anything. Worst case is that we lose a reschedule ...
*/ staticinlinevoid arch_smp_send_reschedule(int cpu)
{ externconststruct plat_smp_ops *mp_ops; /* private */
/* * This function will set up the necessary IPIs for Linux to communicate * with the CPUs in mask. * Return 0 on success.
*/ int mips_smp_ipi_allocate(conststruct cpumask *mask);
/* * This function will free up IPIs allocated with mips_smp_ipi_allocate to the * CPUs in mask, which must be a subset of the IPIs that have been configured. * Return 0 on success.
*/ int mips_smp_ipi_free(conststruct cpumask *mask);
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