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-rw-r--r--include/asm-sparc/smp.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/include/asm-sparc/smp.h b/include/asm-sparc/smp.h
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+++ b/include/asm-sparc/smp.h
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+/* 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/config.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(void, smp_message_pass, int, int, unsigned long, int)
+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)
+#define smp_message_pass(target,msg,data,wait) BTFIXUP_CALL(smp_message_pass)(target,msg,data,wait)
+
+extern __inline__ void xc0(smpfunc_t func) { smp_cross_call(func, 0, 0, 0, 0, 0); }
+extern __inline__ void xc1(smpfunc_t func, unsigned long arg1)
+{ smp_cross_call(func, arg1, 0, 0, 0, 0); }
+extern __inline__ void xc2(smpfunc_t func, unsigned long arg1, unsigned long arg2)
+{ smp_cross_call(func, arg1, arg2, 0, 0, 0); }
+extern __inline__ void xc3(smpfunc_t func, unsigned long arg1, unsigned long arg2,
+ unsigned long arg3)
+{ smp_cross_call(func, arg1, arg2, arg3, 0, 0); }
+extern __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); }
+extern __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); }
+
+extern __inline__ int smp_call_function(void (*func)(void *info), void *info, int nonatomic, int wait)
+{
+ xc1((smpfunc_t)func, (unsigned long)info);
+ return 0;
+}
+
+extern __volatile__ int __cpu_number_map[NR_CPUS];
+extern __volatile__ int __cpu_logical_map[NR_CPUS];
+
+extern __inline__ int cpu_logical_map(int cpu)
+{
+ return __cpu_logical_map[cpu];
+}
+extern __inline__ int cpu_number_map(int cpu)
+{
+ return __cpu_number_map[cpu];
+}
+
+extern __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;
+}
+
+extern __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
+extern __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
+extern __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 smp_processor_id() (current_thread_info()->cpu)
+
+#define prof_multiplier(__cpu) cpu_data(__cpu).multiplier
+#define prof_counter(__cpu) cpu_data(__cpu).counter
+
+#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
+
+#endif /* SMP */
+
+#define NO_PROC_ID 0xFF
+
+#endif /* !(_SPARC_SMP_H) */