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Diffstat (limited to 'ANDROID_3.4.5/arch/sparc/kernel/sun4m_smp.c')
-rw-r--r--ANDROID_3.4.5/arch/sparc/kernel/sun4m_smp.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/ANDROID_3.4.5/arch/sparc/kernel/sun4m_smp.c b/ANDROID_3.4.5/arch/sparc/kernel/sun4m_smp.c
deleted file mode 100644
index 02db9a04..00000000
--- a/ANDROID_3.4.5/arch/sparc/kernel/sun4m_smp.c
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * sun4m SMP support.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/interrupt.h>
-#include <linux/profile.h>
-#include <linux/delay.h>
-#include <linux/cpu.h>
-
-#include <asm/cacheflush.h>
-#include <asm/switch_to.h>
-#include <asm/tlbflush.h>
-
-#include "irq.h"
-#include "kernel.h"
-
-#define IRQ_IPI_SINGLE 12
-#define IRQ_IPI_MASK 13
-#define IRQ_IPI_RESCHED 14
-#define IRQ_CROSS_CALL 15
-
-static inline unsigned long
-swap_ulong(volatile unsigned long *ptr, unsigned long val)
-{
- __asm__ __volatile__("swap [%1], %0\n\t" :
- "=&r" (val), "=&r" (ptr) :
- "0" (val), "1" (ptr));
- return val;
-}
-
-static void smp4m_ipi_init(void);
-static void smp_setup_percpu_timer(void);
-
-void __cpuinit smp4m_callin(void)
-{
- int cpuid = hard_smp_processor_id();
-
- local_flush_cache_all();
- local_flush_tlb_all();
-
- notify_cpu_starting(cpuid);
-
- /* Get our local ticker going. */
- smp_setup_percpu_timer();
-
- calibrate_delay();
- smp_store_cpu_info(cpuid);
-
- local_flush_cache_all();
- local_flush_tlb_all();
-
- /*
- * Unblock the master CPU _only_ when the scheduler state
- * of all secondary CPUs will be up-to-date, so after
- * the SMP initialization the master will be just allowed
- * to call the scheduler code.
- */
- /* Allow master to continue. */
- swap_ulong(&cpu_callin_map[cpuid], 1);
-
- /* XXX: What's up with all the flushes? */
- local_flush_cache_all();
- local_flush_tlb_all();
-
- /* Fix idle thread fields. */
- __asm__ __volatile__("ld [%0], %%g6\n\t"
- : : "r" (&current_set[cpuid])
- : "memory" /* paranoid */);
-
- /* Attach to the address space of init_task. */
- atomic_inc(&init_mm.mm_count);
- current->active_mm = &init_mm;
-
- while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))
- mb();
-
- local_irq_enable();
-
- set_cpu_online(cpuid, true);
-}
-
-/*
- * Cycle through the processors asking the PROM to start each one.
- */
-void __init smp4m_boot_cpus(void)
-{
- smp4m_ipi_init();
- smp_setup_percpu_timer();
- local_flush_cache_all();
-}
-
-int __cpuinit smp4m_boot_one_cpu(int i)
-{
- unsigned long *entry = &sun4m_cpu_startup;
- struct task_struct *p;
- int timeout;
- int cpu_node;
-
- cpu_find_by_mid(i, &cpu_node);
-
- /* Cook up an idler for this guy. */
- p = fork_idle(i);
- current_set[i] = task_thread_info(p);
- /* See trampoline.S for details... */
- entry += ((i - 1) * 3);
-
- /*
- * Initialize the contexts table
- * Since the call to prom_startcpu() trashes the structure,
- * we need to re-initialize it for each cpu
- */
- smp_penguin_ctable.which_io = 0;
- smp_penguin_ctable.phys_addr = (unsigned int) srmmu_ctx_table_phys;
- smp_penguin_ctable.reg_size = 0;
-
- /* whirrr, whirrr, whirrrrrrrrr... */
- printk(KERN_INFO "Starting CPU %d at %p\n", i, entry);
- local_flush_cache_all();
- prom_startcpu(cpu_node, &smp_penguin_ctable, 0, (char *)entry);
-
- /* wheee... it's going... */
- for (timeout = 0; timeout < 10000; timeout++) {
- if (cpu_callin_map[i])
- break;
- udelay(200);
- }
-
- if (!(cpu_callin_map[i])) {
- printk(KERN_ERR "Processor %d is stuck.\n", i);
- return -ENODEV;
- }
-
- local_flush_cache_all();
- return 0;
-}
-
-void __init smp4m_smp_done(void)
-{
- int i, first;
- int *prev;
-
- /* setup cpu list for irq rotation */
- first = 0;
- prev = &first;
- for_each_online_cpu(i) {
- *prev = i;
- prev = &cpu_data(i).next;
- }
- *prev = first;
- local_flush_cache_all();
-
- /* Ok, they are spinning and ready to go. */
-}
-
-
-/* Initialize IPIs on the SUN4M SMP machine */
-static void __init smp4m_ipi_init(void)
-{
-}
-
-static void smp4m_ipi_resched(int cpu)
-{
- set_cpu_int(cpu, IRQ_IPI_RESCHED);
-}
-
-static void smp4m_ipi_single(int cpu)
-{
- set_cpu_int(cpu, IRQ_IPI_SINGLE);
-}
-
-static void smp4m_ipi_mask_one(int cpu)
-{
- set_cpu_int(cpu, IRQ_IPI_MASK);
-}
-
-static struct smp_funcall {
- smpfunc_t func;
- unsigned long arg1;
- unsigned long arg2;
- unsigned long arg3;
- unsigned long arg4;
- unsigned long arg5;
- unsigned long processors_in[SUN4M_NCPUS]; /* Set when ipi entered. */
- unsigned long processors_out[SUN4M_NCPUS]; /* Set when ipi exited. */
-} ccall_info;
-
-static DEFINE_SPINLOCK(cross_call_lock);
-
-/* Cross calls must be serialized, at least currently. */
-static void smp4m_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
- unsigned long arg2, unsigned long arg3,
- unsigned long arg4)
-{
- register int ncpus = SUN4M_NCPUS;
- unsigned long flags;
-
- spin_lock_irqsave(&cross_call_lock, flags);
-
- /* Init function glue. */
- ccall_info.func = func;
- ccall_info.arg1 = arg1;
- ccall_info.arg2 = arg2;
- ccall_info.arg3 = arg3;
- ccall_info.arg4 = arg4;
- ccall_info.arg5 = 0;
-
- /* Init receive/complete mapping, plus fire the IPI's off. */
- {
- register int i;
-
- cpumask_clear_cpu(smp_processor_id(), &mask);
- cpumask_and(&mask, cpu_online_mask, &mask);
- for (i = 0; i < ncpus; i++) {
- if (cpumask_test_cpu(i, &mask)) {
- ccall_info.processors_in[i] = 0;
- ccall_info.processors_out[i] = 0;
- set_cpu_int(i, IRQ_CROSS_CALL);
- } else {
- ccall_info.processors_in[i] = 1;
- ccall_info.processors_out[i] = 1;
- }
- }
- }
-
- {
- register int i;
-
- i = 0;
- do {
- if (!cpumask_test_cpu(i, &mask))
- continue;
- while (!ccall_info.processors_in[i])
- barrier();
- } while (++i < ncpus);
-
- i = 0;
- do {
- if (!cpumask_test_cpu(i, &mask))
- continue;
- while (!ccall_info.processors_out[i])
- barrier();
- } while (++i < ncpus);
- }
- spin_unlock_irqrestore(&cross_call_lock, flags);
-}
-
-/* Running cross calls. */
-void smp4m_cross_call_irq(void)
-{
- int i = smp_processor_id();
-
- ccall_info.processors_in[i] = 1;
- ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3,
- ccall_info.arg4, ccall_info.arg5);
- ccall_info.processors_out[i] = 1;
-}
-
-void smp4m_percpu_timer_interrupt(struct pt_regs *regs)
-{
- struct pt_regs *old_regs;
- int cpu = smp_processor_id();
-
- old_regs = set_irq_regs(regs);
-
- sun4m_clear_profile_irq(cpu);
-
- profile_tick(CPU_PROFILING);
-
- if (!--prof_counter(cpu)) {
- int user = user_mode(regs);
-
- irq_enter();
- update_process_times(user);
- irq_exit();
-
- prof_counter(cpu) = prof_multiplier(cpu);
- }
- set_irq_regs(old_regs);
-}
-
-static void __cpuinit smp_setup_percpu_timer(void)
-{
- int cpu = smp_processor_id();
-
- prof_counter(cpu) = prof_multiplier(cpu) = 1;
- load_profile_irq(cpu, lvl14_resolution);
-
- if (cpu == boot_cpu_id)
- sun4m_unmask_profile_irq();
-}
-
-static void __init smp4m_blackbox_id(unsigned *addr)
-{
- int rd = *addr & 0x3e000000;
- int rs1 = rd >> 11;
-
- addr[0] = 0x81580000 | rd; /* rd %tbr, reg */
- addr[1] = 0x8130200c | rd | rs1; /* srl reg, 0xc, reg */
- addr[2] = 0x80082003 | rd | rs1; /* and reg, 3, reg */
-}
-
-static void __init smp4m_blackbox_current(unsigned *addr)
-{
- int rd = *addr & 0x3e000000;
- int rs1 = rd >> 11;
-
- addr[0] = 0x81580000 | rd; /* rd %tbr, reg */
- addr[2] = 0x8130200a | rd | rs1; /* srl reg, 0xa, reg */
- addr[4] = 0x8008200c | rd | rs1; /* and reg, 0xc, reg */
-}
-
-void __init sun4m_init_smp(void)
-{
- BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4m_blackbox_id);
- BTFIXUPSET_BLACKBOX(load_current, smp4m_blackbox_current);
- BTFIXUPSET_CALL(smp_cross_call, smp4m_cross_call, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4m_processor_id, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(smp_ipi_resched, smp4m_ipi_resched, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(smp_ipi_single, smp4m_ipi_single, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(smp_ipi_mask_one, smp4m_ipi_mask_one, BTFIXUPCALL_NORM);
-}
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