diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/sparc/kernel/smp_32.c')
-rw-r--r-- | ANDROID_3.4.5/arch/sparc/kernel/smp_32.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/ANDROID_3.4.5/arch/sparc/kernel/smp_32.c b/ANDROID_3.4.5/arch/sparc/kernel/smp_32.c deleted file mode 100644 index f671e7fd..00000000 --- a/ANDROID_3.4.5/arch/sparc/kernel/smp_32.c +++ /dev/null @@ -1,480 +0,0 @@ -/* smp.c: Sparc SMP support. - * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 2004 Keith M Wesolowski (wesolows@foobazco.org) - */ - -#include <asm/head.h> - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/threads.h> -#include <linux/smp.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/seq_file.h> -#include <linux/cache.h> -#include <linux/delay.h> - -#include <asm/ptrace.h> -#include <linux/atomic.h> - -#include <asm/irq.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/pgtable.h> -#include <asm/oplib.h> -#include <asm/cacheflush.h> -#include <asm/tlbflush.h> -#include <asm/cpudata.h> -#include <asm/leon.h> - -#include "irq.h" - -volatile unsigned long cpu_callin_map[NR_CPUS] __cpuinitdata = {0,}; - -cpumask_t smp_commenced_mask = CPU_MASK_NONE; - -/* The only guaranteed locking primitive available on all Sparc - * processors is 'ldstub [%reg + immediate], %dest_reg' which atomically - * places the current byte at the effective address into dest_reg and - * places 0xff there afterwards. Pretty lame locking primitive - * compared to the Alpha and the Intel no? Most Sparcs have 'swap' - * instruction which is much better... - */ - -void __cpuinit smp_store_cpu_info(int id) -{ - int cpu_node; - int mid; - - cpu_data(id).udelay_val = loops_per_jiffy; - - cpu_find_by_mid(id, &cpu_node); - cpu_data(id).clock_tick = prom_getintdefault(cpu_node, - "clock-frequency", 0); - cpu_data(id).prom_node = cpu_node; - mid = cpu_get_hwmid(cpu_node); - - if (mid < 0) { - printk(KERN_NOTICE "No MID found for CPU%d at node 0x%08d", id, cpu_node); - mid = 0; - } - cpu_data(id).mid = mid; -} - -void __init smp_cpus_done(unsigned int max_cpus) -{ - extern void smp4m_smp_done(void); - extern void smp4d_smp_done(void); - unsigned long bogosum = 0; - int cpu, num = 0; - - for_each_online_cpu(cpu) { - num++; - bogosum += cpu_data(cpu).udelay_val; - } - - printk("Total of %d processors activated (%lu.%02lu BogoMIPS).\n", - num, bogosum/(500000/HZ), - (bogosum/(5000/HZ))%100); - - switch(sparc_cpu_model) { - case sun4: - printk("SUN4\n"); - BUG(); - break; - case sun4c: - printk("SUN4C\n"); - BUG(); - break; - case sun4m: - smp4m_smp_done(); - break; - case sun4d: - smp4d_smp_done(); - break; - case sparc_leon: - leon_smp_done(); - break; - case sun4e: - printk("SUN4E\n"); - BUG(); - break; - case sun4u: - printk("SUN4U\n"); - BUG(); - break; - default: - printk("UNKNOWN!\n"); - BUG(); - break; - } -} - -void cpu_panic(void) -{ - printk("CPU[%d]: Returns from cpu_idle!\n", smp_processor_id()); - panic("SMP bolixed\n"); -} - -struct linux_prom_registers smp_penguin_ctable __cpuinitdata = { 0 }; - -void smp_send_reschedule(int cpu) -{ - /* - * CPU model dependent way of implementing IPI generation targeting - * a single CPU. The trap handler needs only to do trap entry/return - * to call schedule. - */ - BTFIXUP_CALL(smp_ipi_resched)(cpu); -} - -void smp_send_stop(void) -{ -} - -void arch_send_call_function_single_ipi(int cpu) -{ - /* trigger one IPI single call on one CPU */ - BTFIXUP_CALL(smp_ipi_single)(cpu); -} - -void arch_send_call_function_ipi_mask(const struct cpumask *mask) -{ - int cpu; - - /* trigger IPI mask call on each CPU */ - for_each_cpu(cpu, mask) - BTFIXUP_CALL(smp_ipi_mask_one)(cpu); -} - -void smp_resched_interrupt(void) -{ - irq_enter(); - scheduler_ipi(); - local_cpu_data().irq_resched_count++; - irq_exit(); - /* re-schedule routine called by interrupt return code. */ -} - -void smp_call_function_single_interrupt(void) -{ - irq_enter(); - generic_smp_call_function_single_interrupt(); - local_cpu_data().irq_call_count++; - irq_exit(); -} - -void smp_call_function_interrupt(void) -{ - irq_enter(); - generic_smp_call_function_interrupt(); - local_cpu_data().irq_call_count++; - irq_exit(); -} - -void smp_flush_cache_all(void) -{ - xc0((smpfunc_t) BTFIXUP_CALL(local_flush_cache_all)); - local_flush_cache_all(); -} - -void smp_flush_tlb_all(void) -{ - xc0((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_all)); - local_flush_tlb_all(); -} - -void smp_flush_cache_mm(struct mm_struct *mm) -{ - if(mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc1((smpfunc_t) BTFIXUP_CALL(local_flush_cache_mm), (unsigned long) mm); - local_flush_cache_mm(mm); - } -} - -void smp_flush_tlb_mm(struct mm_struct *mm) -{ - if(mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) { - xc1((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_mm), (unsigned long) mm); - if(atomic_read(&mm->mm_users) == 1 && current->active_mm == mm) - cpumask_copy(mm_cpumask(mm), - cpumask_of(smp_processor_id())); - } - local_flush_tlb_mm(mm); - } -} - -void smp_flush_cache_range(struct vm_area_struct *vma, unsigned long start, - unsigned long end) -{ - struct mm_struct *mm = vma->vm_mm; - - if (mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc3((smpfunc_t) BTFIXUP_CALL(local_flush_cache_range), (unsigned long) vma, start, end); - local_flush_cache_range(vma, start, end); - } -} - -void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, - unsigned long end) -{ - struct mm_struct *mm = vma->vm_mm; - - if (mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc3((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_range), (unsigned long) vma, start, end); - local_flush_tlb_range(vma, start, end); - } -} - -void smp_flush_cache_page(struct vm_area_struct *vma, unsigned long page) -{ - struct mm_struct *mm = vma->vm_mm; - - if(mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc2((smpfunc_t) BTFIXUP_CALL(local_flush_cache_page), (unsigned long) vma, page); - local_flush_cache_page(vma, page); - } -} - -void smp_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) -{ - struct mm_struct *mm = vma->vm_mm; - - if(mm->context != NO_CONTEXT) { - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc2((smpfunc_t) BTFIXUP_CALL(local_flush_tlb_page), (unsigned long) vma, page); - local_flush_tlb_page(vma, page); - } -} - -void smp_flush_page_to_ram(unsigned long page) -{ - /* Current theory is that those who call this are the one's - * who have just dirtied their cache with the pages contents - * in kernel space, therefore we only run this on local cpu. - * - * XXX This experiment failed, research further... -DaveM - */ -#if 1 - xc1((smpfunc_t) BTFIXUP_CALL(local_flush_page_to_ram), page); -#endif - local_flush_page_to_ram(page); -} - -void smp_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr) -{ - cpumask_t cpu_mask; - cpumask_copy(&cpu_mask, mm_cpumask(mm)); - cpumask_clear_cpu(smp_processor_id(), &cpu_mask); - if (!cpumask_empty(&cpu_mask)) - xc2((smpfunc_t) BTFIXUP_CALL(local_flush_sig_insns), (unsigned long) mm, insn_addr); - local_flush_sig_insns(mm, insn_addr); -} - -extern unsigned int lvl14_resolution; - -/* /proc/profile writes can call this, don't __init it please. */ -static DEFINE_SPINLOCK(prof_setup_lock); - -int setup_profiling_timer(unsigned int multiplier) -{ - int i; - unsigned long flags; - - /* Prevent level14 ticker IRQ flooding. */ - if((!multiplier) || (lvl14_resolution / multiplier) < 500) - return -EINVAL; - - spin_lock_irqsave(&prof_setup_lock, flags); - for_each_possible_cpu(i) { - load_profile_irq(i, lvl14_resolution / multiplier); - prof_multiplier(i) = multiplier; - } - spin_unlock_irqrestore(&prof_setup_lock, flags); - - return 0; -} - -void __init smp_prepare_cpus(unsigned int max_cpus) -{ - extern void __init smp4m_boot_cpus(void); - extern void __init smp4d_boot_cpus(void); - int i, cpuid, extra; - - printk("Entering SMP Mode...\n"); - - extra = 0; - for (i = 0; !cpu_find_by_instance(i, NULL, &cpuid); i++) { - if (cpuid >= NR_CPUS) - extra++; - } - /* i = number of cpus */ - if (extra && max_cpus > i - extra) - printk("Warning: NR_CPUS is too low to start all cpus\n"); - - smp_store_cpu_info(boot_cpu_id); - - switch(sparc_cpu_model) { - case sun4: - printk("SUN4\n"); - BUG(); - break; - case sun4c: - printk("SUN4C\n"); - BUG(); - break; - case sun4m: - smp4m_boot_cpus(); - break; - case sun4d: - smp4d_boot_cpus(); - break; - case sparc_leon: - leon_boot_cpus(); - break; - case sun4e: - printk("SUN4E\n"); - BUG(); - break; - case sun4u: - printk("SUN4U\n"); - BUG(); - break; - default: - printk("UNKNOWN!\n"); - BUG(); - break; - } -} - -/* Set this up early so that things like the scheduler can init - * properly. We use the same cpu mask for both the present and - * possible cpu map. - */ -void __init smp_setup_cpu_possible_map(void) -{ - int instance, mid; - - instance = 0; - while (!cpu_find_by_instance(instance, NULL, &mid)) { - if (mid < NR_CPUS) { - set_cpu_possible(mid, true); - set_cpu_present(mid, true); - } - instance++; - } -} - -void __init smp_prepare_boot_cpu(void) -{ - int cpuid = hard_smp_processor_id(); - - if (cpuid >= NR_CPUS) { - prom_printf("Serious problem, boot cpu id >= NR_CPUS\n"); - prom_halt(); - } - if (cpuid != 0) - printk("boot cpu id != 0, this could work but is untested\n"); - - current_thread_info()->cpu = cpuid; - set_cpu_online(cpuid, true); - set_cpu_possible(cpuid, true); -} - -int __cpuinit __cpu_up(unsigned int cpu) -{ - extern int __cpuinit smp4m_boot_one_cpu(int); - extern int __cpuinit smp4d_boot_one_cpu(int); - int ret=0; - - switch(sparc_cpu_model) { - case sun4: - printk("SUN4\n"); - BUG(); - break; - case sun4c: - printk("SUN4C\n"); - BUG(); - break; - case sun4m: - ret = smp4m_boot_one_cpu(cpu); - break; - case sun4d: - ret = smp4d_boot_one_cpu(cpu); - break; - case sparc_leon: - ret = leon_boot_one_cpu(cpu); - break; - case sun4e: - printk("SUN4E\n"); - BUG(); - break; - case sun4u: - printk("SUN4U\n"); - BUG(); - break; - default: - printk("UNKNOWN!\n"); - BUG(); - break; - } - - if (!ret) { - cpumask_set_cpu(cpu, &smp_commenced_mask); - while (!cpu_online(cpu)) - mb(); - } - return ret; -} - -void smp_bogo(struct seq_file *m) -{ - int i; - - for_each_online_cpu(i) { - seq_printf(m, - "Cpu%dBogo\t: %lu.%02lu\n", - i, - cpu_data(i).udelay_val/(500000/HZ), - (cpu_data(i).udelay_val/(5000/HZ))%100); - } -} - -void smp_info(struct seq_file *m) -{ - int i; - - seq_printf(m, "State:\n"); - for_each_online_cpu(i) - seq_printf(m, "CPU%d\t\t: online\n", i); -} |