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 #include <asm/mips-cm.h>
  17
  18 #ifdef CONFIG_SMP
  19
  20 #include <linux/cpumask.h>
  21
  22 struct task_struct;
  23
  24 struct plat_smp_ops {
  25         void (*send_ipi_single)(int cpu, unsigned int action);
  26         void (*send_ipi_mask)(const struct cpumask *mask, unsigned int action);
  27         void (*init_secondary)(void);
  28         void (*smp_finish)(void);
  29         void (*boot_secondary)(int cpu, struct task_struct *idle);
  30         void (*smp_setup)(void);
  31         void (*prepare_cpus)(unsigned int max_cpus);
  32 #ifdef CONFIG_HOTPLUG_CPU
  33         int (*cpu_disable)(void);
  34         void (*cpu_die)(unsigned int cpu);
  35 #endif
  36 };
  37
  38 extern void register_smp_ops(struct plat_smp_ops *ops);
  39
  40 static inline void plat_smp_setup(void)
  41 {
  42         extern struct plat_smp_ops *mp_ops;     /* private */
  43
  44         mp_ops->smp_setup();
  45 }
  46
  47 extern void gic_send_ipi_single(int cpu, unsigned int action);
  48 extern void gic_send_ipi_mask(const struct cpumask *mask, unsigned int action);
  49
  50 #else /* !CONFIG_SMP */
  51
  52 struct plat_smp_ops;
  53
  54 static inline void plat_smp_setup(void)
  55 {
  56         /* UP, nothing to do ...  */
  57 }
  58
  59 static inline void register_smp_ops(struct plat_smp_ops *ops)
  60 {
  61 }
  62
  63 #endif /* !CONFIG_SMP */
  64
  65 static inline int register_up_smp_ops(void)
  66 {
  67 #ifdef CONFIG_SMP_UP
  68         extern struct plat_smp_ops up_smp_ops;
  69
  70         register_smp_ops(&up_smp_ops);
  71
  72         return 0;
  73 #else
  74         return -ENODEV;
  75 #endif
  76 }
  77
  78 static inline int register_cmp_smp_ops(void)
  79 {
  80 #ifdef CONFIG_MIPS_CMP
  81         extern struct plat_smp_ops cmp_smp_ops;
  82
  83         if (!mips_cm_present())
  84                 return -ENODEV;
  85
  86         register_smp_ops(&cmp_smp_ops);
  87
  88         return 0;
  89 #else
  90         return -ENODEV;
  91 #endif
  92 }
  93
  94 static inline int register_vsmp_smp_ops(void)
  95 {
  96 #ifdef CONFIG_MIPS_MT_SMP
  97         extern struct plat_smp_ops vsmp_smp_ops;
  98
  99         register_smp_ops(&vsmp_smp_ops);
 100
 101         return 0;
 102 #else
 103         return -ENODEV;
 104 #endif
 105 }
 106
 107 #ifdef CONFIG_MIPS_CPS
 108 extern int register_cps_smp_ops(void);
 109 #else
 110 static inline int register_cps_smp_ops(void)
 111 {
 112         return -ENODEV;
 113 }
 114 #endif
 115
 116 #endif /* __ASM_SMP_OPS_H */