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-cps.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 int (*boot_secondary)(int cpu, struct task_struct *idle); 30 void (*smp_setup)(void); 31 void (*prepare_cpus)(unsigned int max_cpus); 32 void (*prepare_boot_cpu)(void); 33 #ifdef CONFIG_HOTPLUG_CPU 34 int (*cpu_disable)(void); 35 void (*cpu_die)(unsigned int cpu); 36 void (*cleanup_dead_cpu)(unsigned cpu); 37 #endif 38 #ifdef CONFIG_KEXEC_CORE 39 void (*kexec_nonboot_cpu)(void); 40 #endif 41 }; 42 43 extern void register_smp_ops(const struct plat_smp_ops *ops); 44 45 static inline void plat_smp_setup(void) 46 { 47 extern const struct plat_smp_ops *mp_ops; /* private */ 48 49 mp_ops->smp_setup(); 50 } 51 52 extern void mips_smp_send_ipi_single(int cpu, unsigned int action); 53 extern void mips_smp_send_ipi_mask(const struct cpumask *mask, 54 unsigned int action); 55 56 #else /* !CONFIG_SMP */ 57 58 struct plat_smp_ops; 59 60 static inline void plat_smp_setup(void) 61 { 62 /* UP, nothing to do ... */ 63 } 64 65 static inline void register_smp_ops(const struct plat_smp_ops *ops) 66 { 67 } 68 69 #endif /* !CONFIG_SMP */ 70 71 static inline int register_up_smp_ops(void) 72 { 73 #ifdef CONFIG_SMP_UP 74 extern const struct plat_smp_ops up_smp_ops; 75 76 register_smp_ops(&up_smp_ops); 77 78 return 0; 79 #else 80 return -ENODEV; 81 #endif 82 } 83 84 static inline int register_vsmp_smp_ops(void) 85 { 86 #ifdef CONFIG_MIPS_MT_SMP 87 extern const struct plat_smp_ops vsmp_smp_ops; 88 89 if (!cpu_has_mipsmt) 90 return -ENODEV; 91 92 register_smp_ops(&vsmp_smp_ops); 93 94 return 0; 95 #else 96 return -ENODEV; 97 #endif 98 } 99 100 #ifdef CONFIG_MIPS_CPS 101 extern int register_cps_smp_ops(void); 102 #else 103 static inline int register_cps_smp_ops(void) 104 { 105 return -ENODEV; 106 } 107 #endif 108 109 #endif /* __ASM_SMP_OPS_H */ 110