From 2611f67423a2be18f6fe825e6aef3f1cc956eb65 Mon Sep 17 00:00:00 2001 From: Koen Vandeputte Date: Wed, 8 Feb 2017 09:44:14 +0100 Subject: cns3xxx: remove linux 4.4 support Signed-off-by: Koen Vandeputte --- .../010-arm_introduce-dma-fiq-irq-broadcast.patch | 80 ---------------------- 1 file changed, 80 deletions(-) delete mode 100644 target/linux/cns3xxx/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch (limited to 'target/linux/cns3xxx/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch') diff --git a/target/linux/cns3xxx/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch b/target/linux/cns3xxx/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch deleted file mode 100644 index 024675e599..0000000000 --- a/target/linux/cns3xxx/patches-4.4/010-arm_introduce-dma-fiq-irq-broadcast.patch +++ /dev/null @@ -1,80 +0,0 @@ ---- a/arch/arm/include/asm/glue-cache.h -+++ b/arch/arm/include/asm/glue-cache.h -@@ -156,9 +156,15 @@ static inline void nop_dma_unmap_area(co - #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) --#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area) - --#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 -+ - #endif - - #endif ---- a/arch/arm/mm/Kconfig -+++ b/arch/arm/mm/Kconfig -@@ -866,6 +866,17 @@ config DMA_CACHE_RWFO - in hardware, other workarounds are needed (e.g. cache - maintenance broadcasting in software via FIQ). - -+config DMA_CACHE_FIQ_BROADCAST -+ bool "Enable fiq broadcast DMA cache maintenance" -+ depends on CPU_V6K && SMP -+ select FIQ -+ help -+ The Snoop Control Unit on ARM11MPCore does not detect the -+ cache maintenance operations and the dma_{map,unmap}_area() -+ functions may leave stale cache entries on other CPUs. By -+ enabling this option, fiq broadcast in the ARMv6 -+ DMA cache maintenance functions is performed. -+ - config OUTER_CACHE - bool - ---- a/arch/arm/mm/flush.c -+++ b/arch/arm/mm/flush.c -@@ -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 -+ skip_broadcast = !cache_ops_need_broadcast(); -+#endif -+ if (skip_broadcast && - mapping && !page_mapped(page)) - clear_bit(PG_dcache_clean, &page->flags); - else { ---- a/arch/arm/mm/dma.h -+++ b/arch/arm/mm/dma.h -@@ -4,8 +4,13 @@ - #include - - #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) -+#else -+# define dmac_map_area __glue(fiq,_dma_map_area) -+# define dmac_unmap_area __glue(fiq,_dma_unmap_area) -+#endif - - /* - * These are private to the dma-mapping API. Do not use directly. -- cgit v1.2.3