9989f41fd3
- add arm64 dependent codes with GICv3 and SVE support - fix bugs based on architecture separation requests
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/* local.c COPYRIGHT FUJITSU LIMITED 2015-2016 */
|
|
#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>
|
|
|
|
#define LOCALS_SPAN (8 * PAGE_SIZE)
|
|
|
|
/* BSP initialized stack area */
|
|
union arm64_cpu_local_variables init_thread_info __attribute__((aligned(KERNEL_STACK_SIZE)));
|
|
|
|
/* BSP/AP idle stack pointer head */
|
|
static union arm64_cpu_local_variables *locals;
|
|
size_t arm64_cpu_local_variables_span = LOCALS_SPAN; /* for debugger */
|
|
|
|
/* allocate & initialize BSP/AP idle stack */
|
|
void init_processors_local(int max_id)
|
|
{
|
|
int i = 0;
|
|
union arm64_cpu_local_variables *tmp;
|
|
|
|
/* allocate one more for alignment */
|
|
locals = ihk_mc_alloc_pages((max_id + 1) * (KERNEL_STACK_SIZE / PAGE_SIZE), IHK_MC_AP_CRITICAL);
|
|
locals = (union arm64_cpu_local_variables *)ALIGN_UP((unsigned long)locals, KERNEL_STACK_SIZE);
|
|
|
|
/* clear struct process, struct process_vm, struct thread_info area */
|
|
for (i = 0, tmp = locals; i < max_id; i++, tmp++) {
|
|
memset(tmp, 0, sizeof(struct thread_info));
|
|
}
|
|
kprintf("locals = %p\n", locals);
|
|
}
|
|
|
|
/* get id (logical processor id) local variable address */
|
|
union arm64_cpu_local_variables *get_arm64_cpu_local_variable(int id)
|
|
{
|
|
return locals + id;
|
|
}
|
|
|
|
/* get id (logical processor id) kernel stack address */
|
|
static void *get_arm64_cpu_local_kstack(int id)
|
|
{
|
|
return (char *)get_arm64_cpu_local_variable(id) + THREAD_START_SP;
|
|
}
|
|
|
|
/* get current cpu local variable address */
|
|
union arm64_cpu_local_variables *get_arm64_this_cpu_local(void)
|
|
{
|
|
int id = ihk_mc_get_processor_id();
|
|
return get_arm64_cpu_local_variable(id);
|
|
}
|
|
|
|
/* get current kernel stack address */
|
|
void *get_arm64_this_cpu_kstack(void)
|
|
{
|
|
int id = ihk_mc_get_processor_id();
|
|
return get_arm64_cpu_local_kstack(id);
|
|
}
|
|
|
|
/* assign logical processor id for current_thread_info.cpu */
|
|
/* logical processor id BSP:0, AP0:1, AP1:2, ... APn:n-1 */
|
|
static ihk_atomic_t last_processor_id = IHK_ATOMIC_INIT(-1);
|
|
void assign_processor_id(void)
|
|
{
|
|
int id;
|
|
union arm64_cpu_local_variables *v;
|
|
|
|
id = ihk_atomic_inc_return(&last_processor_id);
|
|
|
|
v = get_arm64_cpu_local_variable(id);
|
|
v->arm64_cpu_local_thread.thread_info.cpu = id;
|
|
}
|
|
|
|
/** IHK **/
|
|
/* get current logical processor id */
|
|
int ihk_mc_get_processor_id(void)
|
|
{
|
|
return current_thread_info()->cpu;
|
|
}
|
|
|
|
/* get current physical processor id (not equal AFFINITY !!) */
|
|
int ihk_mc_get_hardware_processor_id(void)
|
|
{
|
|
return ihk_mc_get_cpu_info()->hw_ids[ihk_mc_get_processor_id()];
|
|
}
|