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 */ 117