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 int (*boot_secondary)(int cpu, struct task_struct *idle); 28 void (*smp_setup)(void); 29 void (*prepare_cpus)(unsigned int max_cpus); 30 void (*prepare_boot_cpu)(void); 31 #ifdef CONFIG_HOTPLUG_CPU 32 int (*cpu_disable)(void); 33 void (*cpu_die)(unsigned int cpu); 34 void (*cleanup_dead_cpu)(unsigned cpu); 35 #endif 36 #ifdef CONFIG_KEXEC_CORE 37 void (*kexec_nonboot_cpu)(void); 38 #endif 39 }; 40 41 extern void register_smp_ops(const struct plat_smp_ops *ops); 42 43 static inline void plat_smp_setup(void) 44 { 45 extern const struct plat_smp_ops *mp_ops; /* private */ 46 47 mp_ops->smp_setup(); 48 } 49 50 extern void mips_smp_send_ipi_single(int cpu, unsigned int action); 51 extern void mips_smp_send_ipi_mask(const struct cpumask *mask, 52 unsigned int action); 53 54 #else /* !CONFIG_SMP */ 55 56 struct plat_smp_ops; 57 58 static inline void plat_smp_setup(void) 59 { 60 /* UP, nothing to do ... */ 61 } 62 63 static inline void register_smp_ops(const struct plat_smp_ops *ops) 64 { 65 } 66 67 #endif /* !CONFIG_SMP */ 68 69 static inline int register_up_smp_ops(void) 70 { 71 #ifdef CONFIG_SMP_UP 72 extern const struct plat_smp_ops up_smp_ops; 73 74 register_smp_ops(&up_smp_ops); 75 76 return 0; 77 #else 78 return -ENODEV; 79 #endif 80 } 81 82 static inline int register_vsmp_smp_ops(void) 83 { 84 #ifdef CONFIG_MIPS_MT_SMP 85 extern const struct plat_smp_ops vsmp_smp_ops; 86 87 if (!cpu_has_mipsmt) 88 return -ENODEV; 89 90 register_smp_ops(&vsmp_smp_ops); 91 92 return 0; 93 #else 94 return -ENODEV; 95 #endif 96 } 97 98 #ifdef CONFIG_MIPS_CPS 99 extern int register_cps_smp_ops(void); 100 #else 101 static inline int register_cps_smp_ops(void) 102 { 103 return -ENODEV; 104 } 105 #endif 106 107 #endif /* __ASM_SMP_OPS_H */ 108