8be0628923
Implement SMP global cache flushing for MN10300. This will be used by the AM34 which is SMP capable. Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com>
153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
/* Functions for global i/dcache invalidation when caching in SMP
|
|
*
|
|
* Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <asm/cacheflush.h>
|
|
#include "cache-smp.h"
|
|
|
|
/**
|
|
* mn10300_icache_inv - Globally invalidate instruction cache
|
|
*
|
|
* Invalidate the instruction cache on all CPUs.
|
|
*/
|
|
void mn10300_icache_inv(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_icache_inv();
|
|
smp_cache_call(SMP_ICACHE_INV, 0, 0);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_icache_inv_page - Globally invalidate a page of instruction cache
|
|
* @start: The address of the page of memory to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the instruction cache on all CPUs
|
|
* covering the page that includes the given address.
|
|
*/
|
|
void mn10300_icache_inv_page(unsigned long start)
|
|
{
|
|
unsigned long flags;
|
|
|
|
start &= ~(PAGE_SIZE-1);
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_icache_inv_page(start);
|
|
smp_cache_call(SMP_ICACHE_INV_RANGE, start, start + PAGE_SIZE);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_icache_inv_range - Globally invalidate range of instruction cache
|
|
* @start: The start address of the region to be invalidated.
|
|
* @end: The end address of the region to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the instruction cache on all CPUs,
|
|
* between start and end-1 inclusive.
|
|
*/
|
|
void mn10300_icache_inv_range(unsigned long start, unsigned long end)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_icache_inv_range(start, end);
|
|
smp_cache_call(SMP_ICACHE_INV_RANGE, start, end);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_icache_inv_range2 - Globally invalidate range of instruction cache
|
|
* @start: The start address of the region to be invalidated.
|
|
* @size: The size of the region to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the instruction cache on all CPUs,
|
|
* between start and start+size-1 inclusive.
|
|
*/
|
|
void mn10300_icache_inv_range2(unsigned long start, unsigned long size)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_icache_inv_range2(start, size);
|
|
smp_cache_call(SMP_ICACHE_INV_RANGE, start, start + size);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_dcache_inv - Globally invalidate data cache
|
|
*
|
|
* Invalidate the data cache on all CPUs.
|
|
*/
|
|
void mn10300_dcache_inv(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_dcache_inv();
|
|
smp_cache_call(SMP_DCACHE_INV, 0, 0);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_dcache_inv_page - Globally invalidate a page of data cache
|
|
* @start: The address of the page of memory to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the data cache on all CPUs covering the
|
|
* page that includes the given address.
|
|
*/
|
|
void mn10300_dcache_inv_page(unsigned long start)
|
|
{
|
|
unsigned long flags;
|
|
|
|
start &= ~(PAGE_SIZE-1);
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_dcache_inv_page(start);
|
|
smp_cache_call(SMP_DCACHE_INV_RANGE, start, start + PAGE_SIZE);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_dcache_inv_range - Globally invalidate range of data cache
|
|
* @start: The start address of the region to be invalidated.
|
|
* @end: The end address of the region to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the data cache on all CPUs, between start
|
|
* and end-1 inclusive.
|
|
*/
|
|
void mn10300_dcache_inv_range(unsigned long start, unsigned long end)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_dcache_inv_range(start, end);
|
|
smp_cache_call(SMP_DCACHE_INV_RANGE, start, end);
|
|
smp_unlock_cache(flags);
|
|
}
|
|
|
|
/**
|
|
* mn10300_dcache_inv_range2 - Globally invalidate range of data cache
|
|
* @start: The start address of the region to be invalidated.
|
|
* @size: The size of the region to be invalidated.
|
|
*
|
|
* Invalidate a range of addresses in the data cache on all CPUs, between start
|
|
* and start+size-1 inclusive.
|
|
*/
|
|
void mn10300_dcache_inv_range2(unsigned long start, unsigned long size)
|
|
{
|
|
unsigned long flags;
|
|
|
|
flags = smp_lock_cache();
|
|
mn10300_local_dcache_inv_range2(start, size);
|
|
smp_cache_call(SMP_DCACHE_INV_RANGE, start, start + size);
|
|
smp_unlock_cache(flags);
|
|
}
|