arm/mm/cache-v4wt.S

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  *  linux/arch/arm/mm/cache-v4wt.S
5  *  Copyright (C) 1997-2002 Russell king
15 #include "proc-macros.S"
46 ENTRY(v4wt_flush_icache_all)
55  *	Invalidate all cache entries in a particular address
58 ENTRY(v4wt_flush_user_cache_all)
65 ENTRY(v4wt_flush_kern_cache_all)
78  *	address space.
80  *	- start - start address (inclusive, page aligned)
81  *	- end	- end address (exclusive, page aligned)
82  *	- flags	- vma_area_struct flags describing address space
84 ENTRY(v4wt_flush_user_cache_range)
89 1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
91 	mcrne	p15, 0, r0, c7, c5, 1		@ invalidate I entry
101  *	region described by start.  If you have non-snooping
104  *	- start  - virtual start address
105  *	- end	 - virtual end address
107 ENTRY(v4wt_coherent_kern_range)
114  *	region described by start.  If you have non-snooping
117  *	- start  - virtual start address
118  *	- end	 - virtual end address
120 ENTRY(v4wt_coherent_user_range)
121 	bic	r0, r0, #CACHE_DLINESIZE - 1
122 1:	mcr	p15, 0, r0, c7, c5, 1		@ invalidate I entry
135  *	- addr	- kernel address
136  *	- size	- region size
138 ENTRY(v4wt_flush_kern_dcache_area)
147  *	Invalidate (discard) the specified virtual address range.
152  *	- start  - virtual start address
153  *	- end	 - virtual end address
156 	bic	r0, r0, #CACHE_DLINESIZE - 1
157 1:	mcr	p15, 0, r0, c7, c6, 1		@ invalidate D entry
166  *	Clean and invalidate the specified virtual address range.
168  *	- start  - virtual start address
169  *	- end	 - virtual end address
176  *	- start	- kernel virtual start address
177  *	- size	- size of region
178  *	- dir	- DMA direction
180 ENTRY(v4wt_dma_unmap_area)
188  *	- start	- kernel virtual start address
189  *	- size	- size of region
190  *	- dir	- DMA direction
192 ENTRY(v4wt_dma_map_area)
202 	@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)