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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_CACHEFLUSH_H
#define _ASM_CACHEFLUSH_H
#include <linux/mm.h>
#include <asm/cpu-info.h>
#include <asm/cacheops.h>
static inline bool cache_present(struct cache_desc *cdesc)
{
return cdesc->flags & CACHE_PRESENT;
}
static inline bool cache_private(struct cache_desc *cdesc)
{
return cdesc->flags & CACHE_PRIVATE;
}
static inline bool cache_inclusive(struct cache_desc *cdesc)
{
return cdesc->flags & CACHE_INCLUSIVE;
}
static inline unsigned int cpu_last_level_cache_line_size(void)
{
int cache_present = boot_cpu_data.cache_leaves_present;
return boot_cpu_data.cache_leaves[cache_present - 1].linesz;
}
asmlinkage void __flush_cache_all(void);
void local_flush_icache_range(unsigned long start, unsigned long end);
#define flush_icache_range local_flush_icache_range
#define flush_icache_user_range local_flush_icache_range
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
#define flush_cache_all() do { } while (0)
#define flush_cache_mm(mm) do { } while (0)
#define flush_cache_dup_mm(mm) do { } while (0)
#define flush_cache_range(vma, start, end) do { } while (0)
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
#define flush_icache_user_page(vma, page, addr, len) do { } while (0)
#define flush_dcache_page(page) do { } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define cache_op(op, addr) \
__asm__ __volatile__( \
" cacop %0, %1 \n" \
: \
: "i" (op), "ZC" (*(unsigned char *)(addr)))
static inline void flush_cache_line(int leaf, unsigned long addr)
{
switch (leaf) {
case Cache_LEAF0:
cache_op(Index_Writeback_Inv_LEAF0, addr);
break;
case Cache_LEAF1:
cache_op(Index_Writeback_Inv_LEAF1, addr);
break;
case Cache_LEAF2:
cache_op(Index_Writeback_Inv_LEAF2, addr);
break;
case Cache_LEAF3:
cache_op(Index_Writeback_Inv_LEAF3, addr);
break;
case Cache_LEAF4:
cache_op(Index_Writeback_Inv_LEAF4, addr);
break;
case Cache_LEAF5:
cache_op(Index_Writeback_Inv_LEAF5, addr);
break;
default:
break;
}
}
#include <asm-generic/cacheflush.h>
#endif /* _ASM_CACHEFLUSH_H */