From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 include/asm-x86_64/smp.h | 149 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 include/asm-x86_64/smp.h

(limited to 'include/asm-x86_64/smp.h')

diff --git a/include/asm-x86_64/smp.h b/include/asm-x86_64/smp.h
new file mode 100644
index 00000000000..fe523e3e2ff
--- /dev/null
+++ b/include/asm-x86_64/smp.h
@@ -0,0 +1,149 @@
+#ifndef __ASM_SMP_H
+#define __ASM_SMP_H
+
+/*
+ * We need the APIC definitions automatically as part of 'smp.h'
+ */
+#ifndef __ASSEMBLY__
+#include <linux/config.h>
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/bitops.h>
+extern int disable_apic;
+#endif
+
+#ifdef CONFIG_X86_LOCAL_APIC
+#ifndef __ASSEMBLY__
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#ifdef CONFIG_X86_IO_APIC
+#include <asm/io_apic.h>
+#endif
+#include <asm/apic.h>
+#include <asm/thread_info.h>
+#endif
+#endif
+
+#ifdef CONFIG_SMP
+#ifndef ASSEMBLY
+
+#include <asm/pda.h>
+
+struct pt_regs;
+
+/*
+ * Private routines/data
+ */
+ 
+extern void smp_alloc_memory(void);
+extern cpumask_t cpu_online_map;
+extern volatile unsigned long smp_invalidate_needed;
+extern int pic_mode;
+extern int smp_num_siblings;
+extern void smp_flush_tlb(void);
+extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
+extern void smp_send_reschedule(int cpu);
+extern void smp_invalidate_rcv(void);		/* Process an NMI */
+extern void (*mtrr_hook) (void);
+extern void zap_low_mappings(void);
+void smp_stop_cpu(void);
+extern cpumask_t cpu_sibling_map[NR_CPUS];
+extern u8 phys_proc_id[NR_CPUS];
+
+#define SMP_TRAMPOLINE_BASE 0x6000
+
+/*
+ * On x86 all CPUs are mapped 1:1 to the APIC space.
+ * This simplifies scheduling and IPI sending and
+ * compresses data structures.
+ */
+
+extern cpumask_t cpu_callout_map;
+extern cpumask_t cpu_callin_map;
+#define cpu_possible_map cpu_callout_map
+
+static inline int num_booting_cpus(void)
+{
+	return cpus_weight(cpu_callout_map);
+}
+
+#define __smp_processor_id() read_pda(cpunumber)
+
+extern __inline int hard_smp_processor_id(void)
+{
+	/* we don't want to mark this access volatile - bad code generation */
+	return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID));
+}
+
+#define safe_smp_processor_id() (disable_apic ? 0 : x86_apicid_to_cpu(hard_smp_processor_id()))
+
+#endif /* !ASSEMBLY */
+
+#define NO_PROC_ID		0xFF		/* No processor magic marker */
+
+#endif
+
+#ifndef ASSEMBLY
+/*
+ * Some lowlevel functions might want to know about
+ * the real APIC ID <-> CPU # mapping.
+ */
+extern u8 x86_cpu_to_apicid[NR_CPUS];	/* physical ID */
+extern u8 x86_cpu_to_log_apicid[NR_CPUS];
+extern u8 bios_cpu_apicid[];
+
+static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
+{
+	return cpus_addr(cpumask)[0];
+}
+
+static inline int x86_apicid_to_cpu(u8 apicid)
+{
+	int i;
+
+	for (i = 0; i < NR_CPUS; ++i)
+		if (x86_cpu_to_apicid[i] == apicid)
+			return i;
+
+	/* No entries in x86_cpu_to_apicid?  Either no MPS|ACPI,
+	 * or called too early.  Either way, we must be CPU 0. */
+      	if (x86_cpu_to_apicid[0] == BAD_APICID)
+		return 0;
+
+	return -1;
+}
+
+static inline int cpu_present_to_apicid(int mps_cpu)
+{
+	if (mps_cpu < NR_CPUS)
+		return (int)bios_cpu_apicid[mps_cpu];
+	else
+		return BAD_APICID;
+}
+
+#endif /* !ASSEMBLY */
+
+#ifndef CONFIG_SMP
+#define stack_smp_processor_id() 0
+#define safe_smp_processor_id() 0
+#define cpu_logical_map(x) (x)
+#else
+#include <asm/thread_info.h>
+#define stack_smp_processor_id() \
+({ 								\
+	struct thread_info *ti;					\
+	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK));	\
+	ti->cpu;						\
+})
+#endif
+
+#ifndef __ASSEMBLY__
+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(*(unsigned long *)(APIC_BASE+APIC_LDR));
+}
+#endif
+
+#endif
+
-- 
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