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![Andreas Bießmann](/assets/img/avatar_default.png)
Unfortunately the avr32 cache implementation has another API than the one described in common.h. Migrate the flush/invalidate dcache functions to the common API to be usable in device drivers. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> CC: Josh Wu <josh.wu@atmel.com>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
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* Copyright (C) 2006 Atmel Corporation
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_AVR32_CACHEFLUSH_H
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#define __ASM_AVR32_CACHEFLUSH_H
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/*
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* Invalidate any cacheline containing virtual address vaddr without
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* writing anything back to memory.
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*
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* Note that this function may corrupt unrelated data structures when
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* applied on buffers that are not cacheline aligned in both ends.
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*/
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static inline void dcache_invalidate_line(volatile void *vaddr)
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{
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asm volatile("cache %0[0], 0x0b" : : "r"(vaddr) : "memory");
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}
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/*
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* Make sure any cacheline containing virtual address vaddr is written
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* to memory.
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*/
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static inline void dcache_clean_line(volatile void *vaddr)
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{
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asm volatile("cache %0[0], 0x0c" : : "r"(vaddr) : "memory");
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}
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/*
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* Make sure any cacheline containing virtual address vaddr is written
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* to memory and then invalidate it.
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*/
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static inline void dcache_flush_line(volatile void *vaddr)
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{
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asm volatile("cache %0[0], 0x0d" : : "r"(vaddr) : "memory");
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}
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/*
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* Invalidate any instruction cacheline containing virtual address
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* vaddr.
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*/
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static inline void icache_invalidate_line(volatile void *vaddr)
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{
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asm volatile("cache %0[0], 0x01" : : "r"(vaddr) : "memory");
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}
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/*
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* Applies the above functions on all lines that are touched by the
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* specified virtual address range.
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*/
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void dcache_clean_range(volatile void *start, size_t len);
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void icache_invalidate_range(volatile void *start, size_t len);
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static inline void dcache_flush_unlocked(void)
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{
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asm volatile("cache %0[5], 0x08" : : "r"(0) : "memory");
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}
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/*
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* Make sure any pending writes are completed before continuing.
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*/
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#define sync_write_buffer() asm volatile("sync 0" : : : "memory")
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#endif /* __ASM_AVR32_CACHEFLUSH_H */
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