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 #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(const struct plat_smp_ops *ops); 39 40 static inline void plat_smp_setup(void) 41 { 42 extern const struct plat_smp_ops *mp_ops; /* private */ 43 44 mp_ops->smp_setup(); 45 } 46 47 extern void mips_smp_send_ipi_single(int cpu, unsigned int action); 48 extern void mips_smp_send_ipi_mask(const struct cpumask *mask, 49 unsigned int action); 50 51 #else /* !CONFIG_SMP */ 52 53 struct plat_smp_ops; 54 55 static inline void plat_smp_setup(void) 56 { 57 /* UP, nothing to do ... */ 58 } 59 60 static inline void register_smp_ops(const struct plat_smp_ops *ops) 61 { 62 } 63 64 #endif /* !CONFIG_SMP */ 65 66 static inline int register_up_smp_ops(void) 67 { 68 #ifdef CONFIG_SMP_UP 69 extern const struct plat_smp_ops up_smp_ops; 70 71 register_smp_ops(&up_smp_ops); 72 73 return 0; 74 #else 75 return -ENODEV; 76 #endif 77 } 78 79 static inline int register_cmp_smp_ops(void) 80 { 81 #ifdef CONFIG_MIPS_CMP 82 extern const struct plat_smp_ops cmp_smp_ops; 83 84 if (!mips_cm_present()) 85 return -ENODEV; 86 87 register_smp_ops(&cmp_smp_ops); 88 89 return 0; 90 #else 91 return -ENODEV; 92 #endif 93 } 94 95 static inline int register_vsmp_smp_ops(void) 96 { 97 #ifdef CONFIG_MIPS_MT_SMP 98 extern const struct plat_smp_ops vsmp_smp_ops; 99 100 register_smp_ops(&vsmp_smp_ops); 101 102 return 0; 103 #else 104 return -ENODEV; 105 #endif 106 } 107 108 #ifdef CONFIG_MIPS_CPS 109 extern int register_cps_smp_ops(void); 110 #else 111 static inline int register_cps_smp_ops(void) 112 { 113 return -ENODEV; 114 } 115 #endif 116 117 #endif /* __ASM_SMP_OPS_H */ 118