mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 00:48:50 +00:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
147 lines
3.1 KiB
ArmAsm
147 lines
3.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* linux/arch/arm/mm/cache-v4.S
|
|
*
|
|
* Copyright (C) 1997-2002 Russell king
|
|
*/
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
#include <asm/assembler.h>
|
|
#include <asm/page.h>
|
|
#include "proc-macros.S"
|
|
|
|
/*
|
|
* flush_icache_all()
|
|
*
|
|
* Unconditionally clean and invalidate the entire icache.
|
|
*/
|
|
ENTRY(v4_flush_icache_all)
|
|
ret lr
|
|
ENDPROC(v4_flush_icache_all)
|
|
|
|
/*
|
|
* flush_user_cache_all()
|
|
*
|
|
* Invalidate all cache entries in a particular address
|
|
* space.
|
|
*
|
|
* - mm - mm_struct describing address space
|
|
*/
|
|
ENTRY(v4_flush_user_cache_all)
|
|
/* FALLTHROUGH */
|
|
/*
|
|
* flush_kern_cache_all()
|
|
*
|
|
* Clean and invalidate the entire cache.
|
|
*/
|
|
ENTRY(v4_flush_kern_cache_all)
|
|
#ifdef CONFIG_CPU_CP15
|
|
mov r0, #0
|
|
mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
|
|
ret lr
|
|
#else
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
|
|
/*
|
|
* flush_user_cache_range(start, end, flags)
|
|
*
|
|
* Invalidate a range of cache entries in the specified
|
|
* address space.
|
|
*
|
|
* - start - start address (may not be aligned)
|
|
* - end - end address (exclusive, may not be aligned)
|
|
* - flags - vma_area_struct flags describing address space
|
|
*/
|
|
ENTRY(v4_flush_user_cache_range)
|
|
#ifdef CONFIG_CPU_CP15
|
|
mov ip, #0
|
|
mcr p15, 0, ip, c7, c7, 0 @ flush ID cache
|
|
ret lr
|
|
#else
|
|
/* FALLTHROUGH */
|
|
#endif
|
|
|
|
/*
|
|
* coherent_kern_range(start, end)
|
|
*
|
|
* Ensure coherency between the Icache and the Dcache in the
|
|
* region described by start. If you have non-snooping
|
|
* Harvard caches, you need to implement this function.
|
|
*
|
|
* - start - virtual start address
|
|
* - end - virtual end address
|
|
*/
|
|
ENTRY(v4_coherent_kern_range)
|
|
/* FALLTHROUGH */
|
|
|
|
/*
|
|
* coherent_user_range(start, end)
|
|
*
|
|
* Ensure coherency between the Icache and the Dcache in the
|
|
* region described by start. If you have non-snooping
|
|
* Harvard caches, you need to implement this function.
|
|
*
|
|
* - start - virtual start address
|
|
* - end - virtual end address
|
|
*/
|
|
ENTRY(v4_coherent_user_range)
|
|
mov r0, #0
|
|
ret lr
|
|
|
|
/*
|
|
* flush_kern_dcache_area(void *addr, size_t size)
|
|
*
|
|
* Ensure no D cache aliasing occurs, either with itself or
|
|
* the I cache
|
|
*
|
|
* - addr - kernel address
|
|
* - size - region size
|
|
*/
|
|
ENTRY(v4_flush_kern_dcache_area)
|
|
/* FALLTHROUGH */
|
|
|
|
/*
|
|
* dma_flush_range(start, end)
|
|
*
|
|
* Clean and invalidate the specified virtual address range.
|
|
*
|
|
* - start - virtual start address
|
|
* - end - virtual end address
|
|
*/
|
|
ENTRY(v4_dma_flush_range)
|
|
#ifdef CONFIG_CPU_CP15
|
|
mov r0, #0
|
|
mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
|
|
#endif
|
|
ret lr
|
|
|
|
/*
|
|
* dma_unmap_area(start, size, dir)
|
|
* - start - kernel virtual start address
|
|
* - size - size of region
|
|
* - dir - DMA direction
|
|
*/
|
|
ENTRY(v4_dma_unmap_area)
|
|
teq r2, #DMA_TO_DEVICE
|
|
bne v4_dma_flush_range
|
|
/* FALLTHROUGH */
|
|
|
|
/*
|
|
* dma_map_area(start, size, dir)
|
|
* - start - kernel virtual start address
|
|
* - size - size of region
|
|
* - dir - DMA direction
|
|
*/
|
|
ENTRY(v4_dma_map_area)
|
|
ret lr
|
|
ENDPROC(v4_dma_unmap_area)
|
|
ENDPROC(v4_dma_map_area)
|
|
|
|
.globl v4_flush_kern_cache_louis
|
|
.equ v4_flush_kern_cache_louis, v4_flush_kern_cache_all
|
|
|
|
__INITDATA
|
|
|
|
@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
|
|
define_cache_functions v4
|