2f89e26ac0
mckernel/lib/include/*.h mckernel/arch/x86/elfboot/* mckernel/arch/x86/kboot/main.c mckernel/arch/x86/kernel/* mckernel/lib/page_alloc.c mckernel/lib/string.c mckernel/lib/include/ihk/* except mckernel/arch/x86/kernel/include/signal.h mckernel/arch/x86/tools/mcreboot-attached-mic.sh.in mckernel/arch/x86/kernel/include/syscall_list.h mckernel/arch/x86/kernel/syscall.c .
99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
/**
|
|
* \file local.c
|
|
* License details are found in the file LICENSE.
|
|
* \brief
|
|
* Manipulate information for individual CPUs. These information
|
|
* resides in memory.
|
|
* \author Taku Shimosawa <shimosawa@is.s.u-tokyo.ac.jp> \par
|
|
* Copyright (C) 2011 - 2012 Taku Shimosawa
|
|
*/
|
|
/*
|
|
* HISTORY
|
|
*/
|
|
|
|
#include <cpulocal.h>
|
|
#include <ihk/atomic.h>
|
|
#include <ihk/mm.h>
|
|
#include <ihk/cpu.h>
|
|
#include <ihk/debug.h>
|
|
#include <registers.h>
|
|
#include <string.h>
|
|
|
|
struct x86_cpu_local_variables *locals;
|
|
|
|
void init_processors_local(int max_id)
|
|
{
|
|
/* Is contiguous allocating adequate?? */
|
|
locals = ihk_mc_alloc_pages(max_id, IHK_MC_AP_CRITICAL);
|
|
memset(locals, 0, PAGE_SIZE * max_id);
|
|
|
|
kprintf("locals = %p\n", locals);
|
|
}
|
|
|
|
struct x86_cpu_local_variables *get_x86_cpu_local_variable(int id)
|
|
{
|
|
return (struct x86_cpu_local_variables *)
|
|
((char *)locals + (id << PAGE_SHIFT));
|
|
}
|
|
|
|
static void *get_x86_cpu_local_kstack(int id)
|
|
{
|
|
return ((char *)locals + ((id + 1) << PAGE_SHIFT));
|
|
}
|
|
|
|
struct x86_cpu_local_variables *get_x86_this_cpu_local(void)
|
|
{
|
|
int id = ihk_mc_get_processor_id();
|
|
|
|
return get_x86_cpu_local_variable(id);
|
|
}
|
|
|
|
void *get_x86_this_cpu_kstack(void)
|
|
{
|
|
int id = ihk_mc_get_processor_id();
|
|
|
|
return get_x86_cpu_local_kstack(id);
|
|
}
|
|
|
|
static void set_fs_base(void *address)
|
|
{
|
|
wrmsr(MSR_FS_BASE, (unsigned long)address);
|
|
}
|
|
|
|
static void set_gs_base(void *address)
|
|
{
|
|
wrmsr(MSR_GS_BASE, (unsigned long)address);
|
|
}
|
|
|
|
static ihk_atomic_t last_processor_id = IHK_ATOMIC_INIT(-1);
|
|
|
|
void assign_processor_id(void)
|
|
{
|
|
int id;
|
|
struct x86_cpu_local_variables *v;
|
|
|
|
id = ihk_atomic_inc_return(&last_processor_id);
|
|
|
|
v = get_x86_cpu_local_variable(id);
|
|
set_gs_base(v);
|
|
|
|
v->processor_id = id;
|
|
}
|
|
|
|
/** IHK **/
|
|
int ihk_mc_get_processor_id(void)
|
|
{
|
|
int id;
|
|
|
|
asm volatile("movl %%gs:0, %0" : "=r"(id));
|
|
|
|
return id;
|
|
}
|
|
|
|
int ihk_mc_get_hardware_processor_id(void)
|
|
{
|
|
struct x86_cpu_local_variables *v = get_x86_this_cpu_local();
|
|
|
|
return v->apic_id;
|
|
}
|