ARM: 8729/1: Hook B15 readahead cache functions based on processor
If we detect that we are running on a Broadcom Brahma-B15 CPU, and CONFIG_CACHE_B15_RAC is enabled, make sure that we pick-up the b15_cache_fns function operations. If CONFIG_CACHE_B15_RAC is enabled, but we are not running on a Broadcom Brahma-B15 CPU, we will fallback to calling into the regular v7_cache_fns with no cost. If CONFIG_CACHE_B15_RAC is disabled, there is no cost and we just use the regular v7_cache_fns. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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@ -15,6 +15,7 @@
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#include <asm/assembler.h>
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#include <asm/errno.h>
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#include <asm/unwind.h>
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#include <asm/hardware/cache-b15-rac.h>
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#include "proc-macros.S"
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@ -446,3 +447,23 @@ ENDPROC(v7_dma_unmap_area)
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@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
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define_cache_functions v7
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/* The Broadcom Brahma-B15 read-ahead cache requires some modifications
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* to the v7_cache_fns, we only override the ones we need
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*/
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#ifndef CONFIG_CACHE_B15_RAC
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globl_equ b15_flush_kern_cache_all, v7_flush_kern_cache_all
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#endif
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globl_equ b15_flush_icache_all, v7_flush_icache_all
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globl_equ b15_flush_kern_cache_louis, v7_flush_kern_cache_louis
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globl_equ b15_flush_user_cache_all, v7_flush_user_cache_all
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globl_equ b15_flush_user_cache_range, v7_flush_user_cache_range
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globl_equ b15_coherent_kern_range, v7_coherent_kern_range
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globl_equ b15_coherent_user_range, v7_coherent_user_range
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globl_equ b15_flush_kern_dcache_area, v7_flush_kern_dcache_area
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globl_equ b15_dma_map_area, v7_dma_map_area
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globl_equ b15_dma_unmap_area, v7_dma_unmap_area
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globl_equ b15_dma_flush_range, v7_dma_flush_range
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define_cache_functions b15
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@ -678,7 +678,7 @@ __v7_ca15mp_proc_info:
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__v7_b15mp_proc_info:
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.long 0x420f00f0
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.long 0xff0ffff0
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__v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup
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__v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup, cache_fns = b15_cache_fns
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.size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info
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/*
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