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// SPDX-License-Identifier: GPL-2.0-only
/*
* arch/sh/mm/cache-j2.c
*
* Copyright (C) 2015-2016 Smart Energy Instruments, Inc.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/cpumask.h>
#include <asm/cache.h>
#include <asm/addrspace.h>
#include <asm/processor.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
#define ICACHE_ENABLE 0x1
#define DCACHE_ENABLE 0x2
#define CACHE_ENABLE (ICACHE_ENABLE | DCACHE_ENABLE)
#define ICACHE_FLUSH 0x100
#define DCACHE_FLUSH 0x200
#define CACHE_FLUSH (ICACHE_FLUSH | DCACHE_FLUSH)
u32 __iomem *j2_ccr_base;
static void j2_flush_icache(void *args)
{
unsigned cpu;
for_each_possible_cpu(cpu)
__raw_writel(CACHE_ENABLE | ICACHE_FLUSH, j2_ccr_base + cpu);
}
static void j2_flush_dcache(void *args)
{
unsigned cpu;
for_each_possible_cpu(cpu)
__raw_writel(CACHE_ENABLE | DCACHE_FLUSH, j2_ccr_base + cpu);
}
static void j2_flush_both(void *args)
{
unsigned cpu;
for_each_possible_cpu(cpu)
__raw_writel(CACHE_ENABLE | CACHE_FLUSH, j2_ccr_base + cpu);
}
void __init j2_cache_init(void)
{
if (!j2_ccr_base)
return;
local_flush_cache_all = j2_flush_both;
local_flush_cache_mm = j2_flush_both;
local_flush_cache_dup_mm = j2_flush_both;
local_flush_cache_page = j2_flush_both;
local_flush_cache_range = j2_flush_both;
local_flush_dcache_folio = j2_flush_dcache;
local_flush_icache_range = j2_flush_icache;
local_flush_icache_folio = j2_flush_icache;
local_flush_cache_sigtramp = j2_flush_icache;
pr_info("Initial J2 CCR is %.8x\n", __raw_readl(j2_ccr_base));
}
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