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