diff options
Diffstat (limited to 'arch/sparc/include/asm/smp_32.h')
| -rw-r--r-- | arch/sparc/include/asm/smp_32.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/smp_32.h b/arch/sparc/include/asm/smp_32.h new file mode 100644 index 00000000000..7201752cf93 --- /dev/null +++ b/arch/sparc/include/asm/smp_32.h @@ -0,0 +1,173 @@ +/* smp.h: Sparc specific SMP stuff. + * + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + */ + +#ifndef _SPARC_SMP_H +#define _SPARC_SMP_H + +#include <linux/threads.h> +#include <asm/head.h> +#include <asm/btfixup.h> + +#ifndef __ASSEMBLY__ + +#include <linux/cpumask.h> + +#endif /* __ASSEMBLY__ */ + +#ifdef CONFIG_SMP + +#ifndef __ASSEMBLY__ + +#include <asm/ptrace.h> +#include <asm/asi.h> +#include <asm/atomic.h> + +/* + * Private routines/data + */ + +extern unsigned char boot_cpu_id; +extern cpumask_t phys_cpu_present_map; +#define cpu_possible_map phys_cpu_present_map + +typedef void (*smpfunc_t)(unsigned long, unsigned long, unsigned long, + unsigned long, unsigned long); + +/* + * General functions that each host system must provide. + */ + +void sun4m_init_smp(void); +void sun4d_init_smp(void); + +void smp_callin(void); +void smp_boot_cpus(void); +void smp_store_cpu_info(int); + +struct seq_file; +void smp_bogo(struct seq_file *); +void smp_info(struct seq_file *); + +BTFIXUPDEF_CALL(void, smp_cross_call, smpfunc_t, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) +BTFIXUPDEF_CALL(int, __hard_smp_processor_id, void) +BTFIXUPDEF_BLACKBOX(hard_smp_processor_id) +BTFIXUPDEF_BLACKBOX(load_current) + +#define smp_cross_call(func,arg1,arg2,arg3,arg4,arg5) BTFIXUP_CALL(smp_cross_call)(func,arg1,arg2,arg3,arg4,arg5) + +static inline void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); } +static inline void xc1(smpfunc_t func, unsigned long arg1) +{ smp_cross_call(func, arg1, 0, 0, 0, 0); } +static inline void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2) +{ smp_cross_call(func, arg1, arg2, 0, 0, 0); } +static inline void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2, + unsigned long arg3) +{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); } +static inline void xc4(smpfunc_t func, unsigned long arg1, unsigned long arg2, + unsigned long arg3, unsigned long arg4) +{ smp_cross_call(func, arg1, arg2, arg3, arg4, 0); } +static inline void xc5(smpfunc_t func, unsigned long arg1, unsigned long arg2, + unsigned long arg3, unsigned long arg4, unsigned long arg5) +{ smp_cross_call(func, arg1, arg2, arg3, arg4, arg5); } + +static inline int smp_call_function(void (*func)(void *info), void *info, int wait) +{ + xc1((smpfunc_t)func, (unsigned long)info); + return 0; +} + +static inline int cpu_logical_map(int cpu) +{ + return cpu; +} + +static inline int hard_smp4m_processor_id(void) +{ + int cpuid; + + __asm__ __volatile__("rd %%tbr, %0\n\t" + "srl %0, 12, %0\n\t" + "and %0, 3, %0\n\t" : + "=&r" (cpuid)); + return cpuid; +} + +static inline int hard_smp4d_processor_id(void) +{ + int cpuid; + + __asm__ __volatile__("lda [%%g0] %1, %0\n\t" : + "=&r" (cpuid) : "i" (ASI_M_VIKING_TMP1)); + return cpuid; +} + +#ifndef MODULE +static inline int hard_smp_processor_id(void) +{ + int cpuid; + + /* Black box - sun4m + __asm__ __volatile__("rd %%tbr, %0\n\t" + "srl %0, 12, %0\n\t" + "and %0, 3, %0\n\t" : + "=&r" (cpuid)); + - sun4d + __asm__ __volatile__("lda [%g0] ASI_M_VIKING_TMP1, %0\n\t" + "nop; nop" : + "=&r" (cpuid)); + See btfixup.h and btfixupprep.c to understand how a blackbox works. + */ + __asm__ __volatile__("sethi %%hi(___b_hard_smp_processor_id), %0\n\t" + "sethi %%hi(boot_cpu_id), %0\n\t" + "ldub [%0 + %%lo(boot_cpu_id)], %0\n\t" : + "=&r" (cpuid)); + return cpuid; +} +#else +static inline int hard_smp_processor_id(void) +{ + int cpuid; + + __asm__ __volatile__("mov %%o7, %%g1\n\t" + "call ___f___hard_smp_processor_id\n\t" + " nop\n\t" + "mov %%g2, %0\n\t" : "=r"(cpuid) : : "g1", "g2"); + return cpuid; +} +#endif + +#define raw_smp_processor_id() (current_thread_info()->cpu) + +#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier +#define prof_counter(__cpu) cpu_data(__cpu).counter + +void smp_setup_cpu_possible_map(void); + +#endif /* !(__ASSEMBLY__) */ + +/* Sparc specific messages. */ +#define MSG_CROSS_CALL 0x0005 /* run func on cpus */ + +/* Empirical PROM processor mailbox constants. If the per-cpu mailbox + * contains something other than one of these then the ipi is from + * Linux's active_kernel_processor. This facility exists so that + * the boot monitor can capture all the other cpus when one catches + * a watchdog reset or the user enters the monitor using L1-A keys. + */ +#define MBOX_STOPCPU 0xFB +#define MBOX_IDLECPU 0xFC +#define MBOX_IDLECPU2 0xFD +#define MBOX_STOPCPU2 0xFE + +#else /* SMP */ + +#define hard_smp_processor_id() 0 +#define smp_setup_cpu_possible_map() do { } while (0) + +#endif /* !(SMP) */ + +#define NO_PROC_ID 0xFF + +#endif /* !(_SPARC_SMP_H) */ |