V4L/DVB (6653): Add support for the DViCO FusionHDTV NANO2 w/ZL10353 and firmware
[linux-2.6/verdex.git] / include / asm-mips / smp.h
blobdc770025a9b0c98fcbe954f677713c0f85f91b7d
1 /*
2 * This file is subject to the terms and conditions of the GNU General
3 * Public License. See the file "COPYING" in the main directory of this
4 * archive for more details.
6 * Copyright (C) 2000 - 2001 by Kanoj Sarcar (kanoj@sgi.com)
7 * Copyright (C) 2000 - 2001 by Silicon Graphics, Inc.
8 * Copyright (C) 2000, 2001, 2002 Ralf Baechle
9 * Copyright (C) 2000, 2001 Broadcom Corporation
11 #ifndef __ASM_SMP_H
12 #define __ASM_SMP_H
15 #ifdef CONFIG_SMP
17 #include <linux/bitops.h>
18 #include <linux/linkage.h>
19 #include <linux/threads.h>
20 #include <linux/cpumask.h>
21 #include <asm/atomic.h>
23 #define raw_smp_processor_id() (current_thread_info()->cpu)
25 /* Map from cpu id to sequential logical cpu number. This will only
26 not be idempotent when cpus failed to come on-line. */
27 extern int __cpu_number_map[NR_CPUS];
28 #define cpu_number_map(cpu) __cpu_number_map[cpu]
30 /* The reverse map from sequential logical cpu number to cpu id. */
31 extern int __cpu_logical_map[NR_CPUS];
32 #define cpu_logical_map(cpu) __cpu_logical_map[cpu]
34 #define NO_PROC_ID (-1)
36 struct call_data_struct {
37 void (*func)(void *);
38 void *info;
39 atomic_t started;
40 atomic_t finished;
41 int wait;
44 extern struct call_data_struct *call_data;
46 #define SMP_RESCHEDULE_YOURSELF 0x1 /* XXX braindead */
47 #define SMP_CALL_FUNCTION 0x2
49 extern cpumask_t phys_cpu_present_map;
50 #define cpu_possible_map phys_cpu_present_map
53 * These are defined by the board-specific code.
57 * Cause the function described by call_data to be executed on the passed
58 * cpu. When the function has finished, increment the finished field of
59 * call_data.
61 extern void core_send_ipi(int cpu, unsigned int action);
63 static inline void core_send_ipi_mask(cpumask_t mask, unsigned int action)
65 unsigned int i;
67 for_each_cpu_mask(i, mask)
68 core_send_ipi(i, action);
73 * Firmware CPU startup hook
75 extern void prom_boot_secondary(int cpu, struct task_struct *idle);
78 * After we've done initial boot, this function is called to allow the
79 * board code to clean up state, if needed
81 extern void prom_init_secondary(void);
84 * Populate cpu_possible_map before smp_init, called from setup_arch.
86 extern void plat_smp_setup(void);
89 * Called in smp_prepare_cpus.
91 extern void plat_prepare_cpus(unsigned int max_cpus);
94 * Last chance for the board code to finish SMP initialization before
95 * the CPU is "online".
97 extern void prom_smp_finish(void);
99 /* Hook for after all CPUs are online */
100 extern void prom_cpus_done(void);
102 extern void asmlinkage smp_bootstrap(void);
105 * this function sends a 'reschedule' IPI to another CPU.
106 * it goes straight through and wastes no time serializing
107 * anything. Worst case is that we lose a reschedule ...
109 static inline void smp_send_reschedule(int cpu)
111 core_send_ipi(cpu, SMP_RESCHEDULE_YOURSELF);
114 extern asmlinkage void smp_call_function_interrupt(void);
116 #endif /* CONFIG_SMP */
118 #endif /* __ASM_SMP_H */