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!
diff --git a/include/asm-ia64/smp.h b/include/asm-ia64/smp.h
new file mode 100644
index 0000000..c4a227a
--- /dev/null
+++ b/include/asm-ia64/smp.h
@@ -0,0 +1,134 @@
+/*
+ * SMP Support
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
+ * (c) Copyright 2001-2003, 2005 Hewlett-Packard Development Company, L.P.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+#ifndef _ASM_IA64_SMP_H
+#define _ASM_IA64_SMP_H
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/threads.h>
+#include <linux/kernel.h>
+#include <linux/cpumask.h>
+
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/param.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+
+static inline unsigned int
+ia64_get_lid (void)
+{
+ union {
+ struct {
+ unsigned long reserved : 16;
+ unsigned long eid : 8;
+ unsigned long id : 8;
+ unsigned long ignored : 32;
+ } f;
+ unsigned long bits;
+ } lid;
+
+ lid.bits = ia64_getreg(_IA64_REG_CR_LID);
+ return lid.f.id << 8 | lid.f.eid;
+}
+
+#ifdef CONFIG_SMP
+
+#define XTP_OFFSET 0x1e0008
+
+#define SMP_IRQ_REDIRECTION (1 << 0)
+#define SMP_IPI_REDIRECTION (1 << 1)
+
+#define smp_processor_id() (current_thread_info()->cpu)
+
+extern struct smp_boot_data {
+ int cpu_count;
+ int cpu_phys_id[NR_CPUS];
+} smp_boot_data __initdata;
+
+extern char no_int_routing __devinitdata;
+
+extern cpumask_t cpu_online_map;
+extern void __iomem *ipi_base_addr;
+extern unsigned char smp_int_redirect;
+
+extern volatile int ia64_cpu_to_sapicid[];
+#define cpu_physical_id(i) ia64_cpu_to_sapicid[i]
+
+extern unsigned long ap_wakeup_vector;
+
+/*
+ * Function to map hard smp processor id to logical id. Slow, so don't use this in
+ * performance-critical code.
+ */
+static inline int
+cpu_logical_id (int cpuid)
+{
+ int i;
+
+ for (i = 0; i < NR_CPUS; ++i)
+ if (cpu_physical_id(i) == cpuid)
+ break;
+ return i;
+}
+
+/*
+ * XTP control functions:
+ * min_xtp : route all interrupts to this CPU
+ * normal_xtp: nominal XTP value
+ * max_xtp : never deliver interrupts to this CPU.
+ */
+
+static inline void
+min_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x00, ipi_base_addr + XTP_OFFSET); /* XTP to min */
+}
+
+static inline void
+normal_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x08, ipi_base_addr + XTP_OFFSET); /* XTP normal */
+}
+
+static inline void
+max_xtp (void)
+{
+ if (smp_int_redirect & SMP_IRQ_REDIRECTION)
+ writeb(0x0f, ipi_base_addr + XTP_OFFSET); /* Set XTP to max */
+}
+
+#define hard_smp_processor_id() ia64_get_lid()
+
+/* Upping and downing of CPUs */
+extern int __cpu_disable (void);
+extern void __cpu_die (unsigned int cpu);
+extern void cpu_die (void) __attribute__ ((noreturn));
+extern int __cpu_up (unsigned int cpu);
+extern void __init smp_build_cpu_map(void);
+
+extern void __init init_smp_config (void);
+extern void smp_do_timer (struct pt_regs *regs);
+
+extern int smp_call_function_single (int cpuid, void (*func) (void *info), void *info,
+ int retry, int wait);
+extern void smp_send_reschedule (int cpu);
+extern void lock_ipi_calllock(void);
+extern void unlock_ipi_calllock(void);
+
+#else
+
+#define cpu_logical_id(i) 0
+#define cpu_physical_id(i) ia64_get_lid()
+
+#endif /* CONFIG_SMP */
+#endif /* _ASM_IA64_SMP_H */
