9d56dd3b08
The old ctrl in/out routines are non-portable and unsuitable for cross-platform use. While drivers/sh has already been sanitized, there is still quite a lot of code that is not. This converts the arch/sh/ bits over, which permits us to flag the routines as deprecated whilst still building with -Werror for the architecture code, and to ensure that future users are not added. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
|
|
* arch/sh/mm/cache-sh2a.c
|
|
*
|
|
* Copyright (C) 2008 Yoshinori Sato
|
|
*
|
|
* Released under the terms of the GNU GPL v2.0.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm/cache.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/io.h>
|
|
|
|
static void sh2a__flush_wback_region(void *start, int size)
|
|
{
|
|
unsigned long v;
|
|
unsigned long begin, end;
|
|
unsigned long flags;
|
|
|
|
begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
|
|
end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
|
|
& ~(L1_CACHE_BYTES-1);
|
|
|
|
local_irq_save(flags);
|
|
jump_to_uncached();
|
|
|
|
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
|
|
unsigned long addr = CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0);
|
|
int way;
|
|
for (way = 0; way < 4; way++) {
|
|
unsigned long data = __raw_readl(addr | (way << 11));
|
|
if ((data & CACHE_PHYSADDR_MASK) == (v & CACHE_PHYSADDR_MASK)) {
|
|
data &= ~SH_CACHE_UPDATED;
|
|
__raw_writel(data, addr | (way << 11));
|
|
}
|
|
}
|
|
}
|
|
|
|
back_to_cached();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static void sh2a__flush_purge_region(void *start, int size)
|
|
{
|
|
unsigned long v;
|
|
unsigned long begin, end;
|
|
unsigned long flags;
|
|
|
|
begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
|
|
end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
|
|
& ~(L1_CACHE_BYTES-1);
|
|
|
|
local_irq_save(flags);
|
|
jump_to_uncached();
|
|
|
|
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
|
|
__raw_writel((v & CACHE_PHYSADDR_MASK),
|
|
CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
|
|
}
|
|
back_to_cached();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static void sh2a__flush_invalidate_region(void *start, int size)
|
|
{
|
|
unsigned long v;
|
|
unsigned long begin, end;
|
|
unsigned long flags;
|
|
|
|
begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
|
|
end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
|
|
& ~(L1_CACHE_BYTES-1);
|
|
local_irq_save(flags);
|
|
jump_to_uncached();
|
|
|
|
#ifdef CONFIG_CACHE_WRITEBACK
|
|
__raw_writel(__raw_readl(CCR) | CCR_OCACHE_INVALIDATE, CCR);
|
|
/* I-cache invalidate */
|
|
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
|
|
__raw_writel((v & CACHE_PHYSADDR_MASK),
|
|
CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
|
|
}
|
|
#else
|
|
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
|
|
__raw_writel((v & CACHE_PHYSADDR_MASK),
|
|
CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
|
|
__raw_writel((v & CACHE_PHYSADDR_MASK),
|
|
CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008);
|
|
}
|
|
#endif
|
|
back_to_cached();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/* WBack O-Cache and flush I-Cache */
|
|
static void sh2a_flush_icache_range(void *args)
|
|
{
|
|
struct flusher_data *data = args;
|
|
unsigned long start, end;
|
|
unsigned long v;
|
|
unsigned long flags;
|
|
|
|
start = data->addr1 & ~(L1_CACHE_BYTES-1);
|
|
end = (data->addr2 + L1_CACHE_BYTES-1) & ~(L1_CACHE_BYTES-1);
|
|
|
|
local_irq_save(flags);
|
|
jump_to_uncached();
|
|
|
|
for (v = start; v < end; v+=L1_CACHE_BYTES) {
|
|
unsigned long addr = (v & 0x000007f0);
|
|
int way;
|
|
/* O-Cache writeback */
|
|
for (way = 0; way < 4; way++) {
|
|
unsigned long data = __raw_readl(CACHE_OC_ADDRESS_ARRAY | addr | (way << 11));
|
|
if ((data & CACHE_PHYSADDR_MASK) == (v & CACHE_PHYSADDR_MASK)) {
|
|
data &= ~SH_CACHE_UPDATED;
|
|
__raw_writel(data, CACHE_OC_ADDRESS_ARRAY | addr | (way << 11));
|
|
}
|
|
}
|
|
/* I-Cache invalidate */
|
|
__raw_writel(addr,
|
|
CACHE_IC_ADDRESS_ARRAY | addr | 0x00000008);
|
|
}
|
|
|
|
back_to_cached();
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
void __init sh2a_cache_init(void)
|
|
{
|
|
local_flush_icache_range = sh2a_flush_icache_range;
|
|
|
|
__flush_wback_region = sh2a__flush_wback_region;
|
|
__flush_purge_region = sh2a__flush_purge_region;
|
|
__flush_invalidate_region = sh2a__flush_invalidate_region;
|
|
}
|