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@@ -33,3 +33,135 @@
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#include <asm/ptrace.h>
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#include <linux/atomic.h>
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+#include <asm/io.h>
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+#include <asm/irq.h>
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+#include <asm/pgtable.h>
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+#include <asm/pgalloc.h>
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+#include <asm/mmu_context.h>
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+#include <asm/tlbflush.h>
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+
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+#include "proto.h"
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+#include "irq_impl.h"
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+
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+
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+#define DEBUG_SMP 0
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+#if DEBUG_SMP
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+#define DBGS(args) printk args
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+#else
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+#define DBGS(args)
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+#endif
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+
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+/* A collection of per-processor data. */
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+struct cpuinfo_alpha cpu_data[NR_CPUS];
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+EXPORT_SYMBOL(cpu_data);
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+
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+/* A collection of single bit ipi messages. */
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+static struct {
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+ unsigned long bits ____cacheline_aligned;
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+} ipi_data[NR_CPUS] __cacheline_aligned;
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+
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+enum ipi_message_type {
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+ IPI_RESCHEDULE,
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+ IPI_CALL_FUNC,
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+ IPI_CALL_FUNC_SINGLE,
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+ IPI_CPU_STOP,
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+};
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+
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+/* Set to a secondary's cpuid when it comes online. */
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+static int smp_secondary_alive = 0;
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+
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+int smp_num_probed; /* Internal processor count */
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+int smp_num_cpus = 1; /* Number that came online. */
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+EXPORT_SYMBOL(smp_num_cpus);
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+
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+/*
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+ * Called by both boot and secondaries to move global data into
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+ * per-processor storage.
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+ */
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+static inline void __init
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+smp_store_cpu_info(int cpuid)
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+{
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+ cpu_data[cpuid].loops_per_jiffy = loops_per_jiffy;
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+ cpu_data[cpuid].last_asn = ASN_FIRST_VERSION;
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+ cpu_data[cpuid].need_new_asn = 0;
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+ cpu_data[cpuid].asn_lock = 0;
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+}
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+
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+/*
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+ * Ideally sets up per-cpu profiling hooks. Doesn't do much now...
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+ */
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+static inline void __init
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+smp_setup_percpu_timer(int cpuid)
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+{
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+ cpu_data[cpuid].prof_counter = 1;
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+ cpu_data[cpuid].prof_multiplier = 1;
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+}
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+
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+static void __init
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+wait_boot_cpu_to_stop(int cpuid)
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+{
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+ unsigned long stop = jiffies + 10*HZ;
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+
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+ while (time_before(jiffies, stop)) {
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+ if (!smp_secondary_alive)
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+ return;
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+ barrier();
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+ }
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+
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+ printk("wait_boot_cpu_to_stop: FAILED on CPU %d, hanging now\n", cpuid);
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+ for (;;)
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+ barrier();
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+}
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+
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+/*
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+ * Where secondaries begin a life of C.
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+ */
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+void __cpuinit
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+smp_callin(void)
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+{
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+ int cpuid = hard_smp_processor_id();
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+
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+ if (cpu_online(cpuid)) {
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+ printk("??, cpu 0x%x already present??\n", cpuid);
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+ BUG();
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+ }
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+ set_cpu_online(cpuid, true);
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+
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+ /* Turn on machine checks. */
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+ wrmces(7);
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+
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+ /* Set trap vectors. */
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+ trap_init();
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+
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+ /* Set interrupt vector. */
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+ wrent(entInt, 0);
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+
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+ /* Get our local ticker going. */
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+ smp_setup_percpu_timer(cpuid);
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+
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+ /* Call platform-specific callin, if specified */
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+ if (alpha_mv.smp_callin) alpha_mv.smp_callin();
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+
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+ /* All kernel threads share the same mm context. */
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+ atomic_inc(&init_mm.mm_count);
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+ current->active_mm = &init_mm;
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+
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+ /* inform the notifiers about the new cpu */
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+ notify_cpu_starting(cpuid);
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+
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+ /* Must have completely accurate bogos. */
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+ local_irq_enable();
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+
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+ /* Wait boot CPU to stop with irq enabled before running
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+ calibrate_delay. */
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+ wait_boot_cpu_to_stop(cpuid);
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+ mb();
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+ calibrate_delay();
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+
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+ smp_store_cpu_info(cpuid);
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+ /* Allow master to continue only after we written loops_per_jiffy. */
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+ wmb();
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+ smp_secondary_alive = 1;
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+
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+ DBGS(("smp_callin: commencing CPU %d current %p active_mm %p\n",
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+ cpuid, current, current->active_mm));
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