X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Fsmp.h;h=62ebdec394b96866d59f2d74e843721e9af052cf;hb=78c6146f16d45f52c33ddb6b48c10fc6cfc53659;hp=ef26911dc22a039513a1fa1664af24f209675d98;hpb=cb3c8b9003f15efa4a750a32d2d602d40cc45d5a;p=linux-2.6

diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index ef26911dc2..62ebdec394 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -5,16 +5,39 @@
 #include <linux/init.h>
 #include <asm/percpu.h>
 
+/*
+ * We need the APIC definitions automatically as part of 'smp.h'
+ */
+#ifdef CONFIG_X86_LOCAL_APIC
+# include <asm/mpspec.h>
+# include <asm/apic.h>
+# ifdef CONFIG_X86_IO_APIC
+#  include <asm/io_apic.h>
+# endif
+#endif
+#include <asm/pda.h>
+#include <asm/thread_info.h>
+
 extern cpumask_t cpu_callout_map;
+extern cpumask_t cpu_initialized;
+extern cpumask_t cpu_callin_map;
+
+extern void (*mtrr_hook)(void);
+extern void zap_low_mappings(void);
 
 extern int smp_num_siblings;
 extern unsigned int num_processors;
 extern cpumask_t cpu_initialized;
 
+#ifdef CONFIG_SMP
 extern u16 x86_cpu_to_apicid_init[];
 extern u16 x86_bios_cpu_apicid_init[];
 extern void *x86_cpu_to_apicid_early_ptr;
 extern void *x86_bios_cpu_apicid_early_ptr;
+#else
+#define x86_cpu_to_apicid_early_ptr NULL
+#define x86_bios_cpu_apicid_early_ptr NULL
+#endif
 
 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
 DECLARE_PER_CPU(cpumask_t, cpu_core_map);
@@ -22,22 +45,12 @@ DECLARE_PER_CPU(u16, cpu_llc_id);
 DECLARE_PER_CPU(u16, x86_cpu_to_apicid);
 DECLARE_PER_CPU(u16, x86_bios_cpu_apicid);
 
-/*
- * Trampoline 80x86 program as an array.
- */
-extern const unsigned char trampoline_data [];
-extern const unsigned char trampoline_end  [];
-extern unsigned char *trampoline_base;
-
 /* Static state in head.S used to set up a CPU */
 extern struct {
 	void *sp;
 	unsigned short ss;
 } stack_start;
 
-extern unsigned long init_rsp;
-extern unsigned long initial_code;
-
 struct smp_ops {
 	void (*smp_prepare_boot_cpu)(void);
 	void (*smp_prepare_cpus)(unsigned max_cpus);
@@ -105,24 +118,84 @@ int native_cpu_up(unsigned int cpunum);
 extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
 
-extern unsigned disabled_cpus;
 extern void prefill_possible_map(void);
 
-#define SMP_TRAMPOLINE_BASE 0x6000
-extern unsigned long setup_trampoline(void);
-
 void smp_store_cpu_info(int id);
 #define cpu_physical_id(cpu)	per_cpu(x86_cpu_to_apicid, cpu)
-#else
+
+/* We don't mark CPUs online until __cpu_up(), so we need another measure */
+static inline int num_booting_cpus(void)
+{
+	return cpus_weight(cpu_callout_map);
+}
+#endif /* CONFIG_SMP */
+
+extern unsigned disabled_cpus __cpuinitdata;
+
+#ifdef CONFIG_X86_32_SMP
+/*
+ * This function is needed by all SMP systems. It must _always_ be valid
+ * from the initial startup. We map APIC_BASE very early in page_setup(),
+ * so this is correct in the x86 case.
+ */
+DECLARE_PER_CPU(int, cpu_number);
+#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
+extern int safe_smp_processor_id(void);
+
+#elif defined(CONFIG_X86_64_SMP)
+#define raw_smp_processor_id()	read_pda(cpunumber)
+
+#define stack_smp_processor_id()					\
+({								\
+	struct thread_info *ti;						\
+	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK));	\
+	ti->cpu;							\
+})
+#define safe_smp_processor_id()		smp_processor_id()
+
+#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */
 #define cpu_physical_id(cpu)		boot_cpu_physical_apicid
+#define safe_smp_processor_id()		0
+#define stack_smp_processor_id() 	0
 #endif
 
-#ifdef CONFIG_X86_32
-# include "smp_32.h"
+#ifdef CONFIG_X86_LOCAL_APIC
+
+static inline int logical_smp_processor_id(void)
+{
+	/* we don't want to mark this access volatile - bad code generation */
+	return GET_APIC_LOGICAL_ID(*(u32 *)(APIC_BASE + APIC_LDR));
+}
+
+#ifndef CONFIG_X86_64
+static inline unsigned int read_apic_id(void)
+{
+	return *(u32 *)(APIC_BASE + APIC_ID);
+}
 #else
-# include "smp_64.h"
+extern unsigned int read_apic_id(void);
 #endif
 
+
+# ifdef APIC_DEFINITION
+extern int hard_smp_processor_id(void);
+# else
+#  include <mach_apicdef.h>
+static inline int hard_smp_processor_id(void)
+{
+	/* we don't want to mark this access volatile - bad code generation */
+	return GET_APIC_ID(read_apic_id());
+}
+# endif /* APIC_DEFINITION */
+
+#else /* CONFIG_X86_LOCAL_APIC */
+
+# ifndef CONFIG_SMP
+#  define hard_smp_processor_id()	0
+# endif
+
+#endif /* CONFIG_X86_LOCAL_APIC */
+
 #ifdef CONFIG_HOTPLUG_CPU
 extern void cpu_exit_clear(void);
 extern void cpu_uninit(void);