arch/mips/include/asm/smp-ops.h

   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.
   5  *
   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
  10  */
  11 #ifndef __ASM_SMP_OPS_H
  12 #define __ASM_SMP_OPS_H
  13
  14 #include <linux/errno.h>
  15
  16 #ifdef CONFIG_SMP
  17
  18 #include <linux/cpumask.h>
  19
  20 struct task_struct;
  21
  22 struct plat_smp_ops {
  23         void (*send_ipi_single)(int cpu, unsigned int action);
  24         void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
  25         void (*init_secondary)(void);
  26         void (*smp_finish)(void);
  27         void (*cpus_done)(void);
  28         void (*boot_secondary)(int cpu, struct task_struct *idle);
  29         void (*smp_setup)(void);
  30         void (*prepare_cpus)(unsigned int max_cpus);
  31 #ifdef CONFIG_HOTPLUG_CPU
  32         int (*cpu_disable)(void);
  33         void (*cpu_die)(unsigned int cpu);
  34 #endif
  35 };
  36
  37 extern void register_smp_ops(struct plat_smp_ops *ops);
  38
  39 static inline void plat_smp_setup(void)
  40 {
  41         extern struct plat_smp_ops *mp_ops;     /* private */
  42
  43         mp_ops->smp_setup();
  44 }
  45
  46 #else /* !CONFIG_SMP */
  47
  48 struct plat_smp_ops;
  49
  50 static inline void plat_smp_setup(void)
  51 {
  52         /* UP, nothing to do ...  */
  53 }
  54
  55 static inline void register_smp_ops(struct plat_smp_ops *ops)
  56 {
  57 }
  58
  59 #endif /* !CONFIG_SMP */
  60
  61 static inline int register_up_smp_ops(void)
  62 {
  63 #ifdef CONFIG_SMP_UP
  64         extern struct plat_smp_ops up_smp_ops;
  65
  66         register_smp_ops(&up_smp_ops);
  67
  68         return 0;
  69 #else
  70         return -ENODEV;
  71 #endif
  72 }
  73
  74 static inline int register_cmp_smp_ops(void)
  75 {
  76 #ifdef CONFIG_MIPS_CMP
  77         extern struct plat_smp_ops cmp_smp_ops;
  78
  79         register_smp_ops(&cmp_smp_ops);
  80
  81         return 0;
  82 #else
  83         return -ENODEV;
  84 #endif
  85 }
  86
  87 static inline int register_vsmp_smp_ops(void)
  88 {
  89 #ifdef CONFIG_MIPS_MT_SMP
  90         extern struct plat_smp_ops vsmp_smp_ops;
  91
  92         register_smp_ops(&vsmp_smp_ops);
  93
  94         return 0;
  95 #else
  96         return -ENODEV;
  97 #endif
  98 }
  99
 100 #endif /* __ASM_SMP_OPS_H */