1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
138 lines
3.1 KiB
ArmAsm
138 lines
3.1 KiB
ArmAsm
/*
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* linux/arch/arm/mm/cache-v3.S
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*
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* Copyright (C) 1997-2002 Russell king
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <asm/hardware.h>
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#include <asm/page.h>
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#include "proc-macros.S"
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/*
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* flush_user_cache_all()
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*
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* Invalidate all cache entries in a particular address
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* space.
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*
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* - mm - mm_struct describing address space
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*/
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ENTRY(v3_flush_user_cache_all)
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/* FALLTHROUGH */
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/*
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* flush_kern_cache_all()
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*
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* Clean and invalidate the entire cache.
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*/
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ENTRY(v3_flush_kern_cache_all)
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/* FALLTHROUGH */
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/*
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* flush_user_cache_range(start, end, flags)
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*
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* Invalidate a range of cache entries in the specified
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* address space.
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*
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* - start - start address (may not be aligned)
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* - end - end address (exclusive, may not be aligned)
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* - flags - vma_area_struct flags describing address space
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*/
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ENTRY(v3_flush_user_cache_range)
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mov ip, #0
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mcreq p15, 0, ip, c7, c0, 0 @ flush ID cache
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mov pc, lr
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/*
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* coherent_kern_range(start, end)
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*
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* Ensure coherency between the Icache and the Dcache in the
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* region described by start. If you have non-snooping
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* Harvard caches, you need to implement this function.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(v3_coherent_kern_range)
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/* FALLTHROUGH */
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/*
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* coherent_user_range(start, end)
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*
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* Ensure coherency between the Icache and the Dcache in the
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* region described by start. If you have non-snooping
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* Harvard caches, you need to implement this function.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(v3_coherent_user_range)
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mov pc, lr
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/*
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* flush_kern_dcache_page(void *page)
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*
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* Ensure no D cache aliasing occurs, either with itself or
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* the I cache
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*
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* - addr - page aligned address
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*/
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ENTRY(v3_flush_kern_dcache_page)
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/* FALLTHROUGH */
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/*
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* dma_inv_range(start, end)
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*
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* Invalidate (discard) the specified virtual address range.
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* May not write back any entries. If 'start' or 'end'
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* are not cache line aligned, those lines must be written
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* back.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(v3_dma_inv_range)
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/* FALLTHROUGH */
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/*
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* dma_flush_range(start, end)
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*
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* Clean and invalidate the specified virtual address range.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(v3_dma_flush_range)
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mov r0, #0
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mcr p15, 0, r0, c7, c0, 0 @ flush ID cache
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/* FALLTHROUGH */
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/*
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* dma_clean_range(start, end)
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*
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* Clean (write back) the specified virtual address range.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(v3_dma_clean_range)
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mov pc, lr
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__INITDATA
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.type v3_cache_fns, #object
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ENTRY(v3_cache_fns)
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.long v3_flush_kern_cache_all
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.long v3_flush_user_cache_all
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.long v3_flush_user_cache_range
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.long v3_coherent_kern_range
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.long v3_coherent_user_range
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.long v3_flush_kern_dcache_page
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.long v3_dma_inv_range
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.long v3_dma_clean_range
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.long v3_dma_flush_range
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.size v3_cache_fns, . - v3_cache_fns
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