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 #endif 37 #ifdef CONFIG_KEXEC 38 void (*kexec_nonboot_cpu)(void); 39 #endif 40 }; 41 42 extern void register_smp_ops(const struct plat_smp_ops *ops); 43 44 static inline void plat_smp_setup(void) 45 { 46 extern const struct plat_smp_ops *mp_ops; /* private */ 47 48 mp_ops->smp_setup(); 49 } 50 51 extern void mips_smp_send_ipi_single(int cpu, unsigned int action); 52 extern void mips_smp_send_ipi_mask(const struct cpumask *mask, 53 unsigned int action); 54 55 #else /* !CONFIG_SMP */ 56 57 struct plat_smp_ops; 58 59 static inline void plat_smp_setup(void) 60 { 61 /* UP, nothing to do ... */ 62 } 63 64 static inline void register_smp_ops(const struct plat_smp_ops *ops) 65 { 66 } 67 68 #endif /* !CONFIG_SMP */ 69 70 static inline int register_up_smp_ops(void) 71 { 72 #ifdef CONFIG_SMP_UP 73 extern const struct plat_smp_ops up_smp_ops; 74 75 register_smp_ops(&up_smp_ops); 76 77 return 0; 78 #else 79 return -ENODEV; 80 #endif 81 } 82 83 static inline int register_cmp_smp_ops(void) 84 { 85 #ifdef CONFIG_MIPS_CMP 86 extern const struct plat_smp_ops cmp_smp_ops; 87 88 if (!mips_cm_present()) 89 return -ENODEV; 90 91 register_smp_ops(&cmp_smp_ops); 92 93 return 0; 94 #else 95 return -ENODEV; 96 #endif 97 } 98 99 static inline int register_vsmp_smp_ops(void) 100 { 101 #ifdef CONFIG_MIPS_MT_SMP 102 extern const struct plat_smp_ops vsmp_smp_ops; 103 104 if (!cpu_has_mipsmt) 105 return -ENODEV; 106 107 register_smp_ops(&vsmp_smp_ops); 108 109 return 0; 110 #else 111 return -ENODEV; 112 #endif 113 } 114 115 #ifdef CONFIG_MIPS_CPS 116 extern int register_cps_smp_ops(void); 117 #else 118 static inline int register_cps_smp_ops(void) 119 { 120 return -ENODEV; 121 } 122 #endif 123 124 #endif /* __ASM_SMP_OPS_H */ 125