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oxnas: sync 010-arm_introduce-dma-fiq-irq-broadcast with cns3xxx 

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
lede-17.01
Daniel Golle 2016-05-20 08:24:32 +02:00
parent c4664b0f91
commit c43635bc5c
1 changed files with 27 additions and 15 deletions
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36
target/linux/oxnas/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch
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@ -4,15 +4,17 @@
#define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range)
#define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range)
#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range)
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
-#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
-#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
+# define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
+# define dmac_flush_range __glue(_CACHE,_dma_flush_range)
+#else
+# define __cpuc_flush_dcache_area __glue(fiq,_flush_kern_dcache_area)
+
+# define dmac_flush_range __glue(fiq,_dma_flush_range)
+#endif /* CONFIG_DMA_CACHE_FIQ_BROADCAST */
+#endif
+
#endif
#endif
@ -38,15 +40,23 @@
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -329,7 +329,11 @@ void flush_dcache_page(struct page *page
@@ -319,6 +319,7 @@ void __sync_icache_dcache(pte_t pteval)
void flush_dcache_page(struct page *page)
{
struct address_space *mapping;
+ bool skip_broadcast = true;
/*
* The zero page is never written to, so never has any dirty
@@ -329,7 +330,10 @@ void flush_dcache_page(struct page *page
mapping = page_mapping(page);
- if (!cache_ops_need_broadcast() &&
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
if (!cache_ops_need_broadcast() &&
+#else
+ if (
+ skip_broadcast = !cache_ops_need_broadcast();
+#endif
+ if (skip_broadcast &&
mapping && !page_mapped(page))
clear_bit(PG_dcache_clean, &page->flags);
else {
@ -56,13 +66,15 @@
#include <asm/glue-cache.h>
#ifndef MULTI_CACHE
-#define dmac_map_area __glue(_CACHE,_dma_map_area)
-#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
+#ifndef CONFIG_DMA_CACHE_FIQ_BROADCAST
#define dmac_map_area __glue(_CACHE,_dma_map_area)
#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
+# define dmac_map_area __glue(_CACHE,_dma_map_area)
+# define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
+#else
+# define dmac_map_area __glue(fiq,_dma_map_area)
+# define dmac_unmap_area __glue(fiq,_dma_unmap_area)
+#endif /* CONFIG_DMA_CACHE_FIQ_BROADCAST */
+#endif
/*
* These are private to the dma-mapping API. Do not use directly.