From e905086e6b2fc9d7e2764cf04622743ca86558f1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 20 Jun 2018 09:11:15 +0200 Subject: MIPS: loongson64: use generic dma noncoherent ops Provide phys_to_dma/dma_to_phys helpers, everything else is generic. Signed-off-by: Christoph Hellwig Patchwork: https://patchwork.linux-mips.org/patch/19545/ Signed-off-by: Paul Burton Cc: Florian Fainelli Cc: David Daney Cc: Kevin Cernekee Cc: Jiaxun Yang Cc: Tom Bogendoerfer Cc: Huacai Chen Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org --- .../include/asm/mach-loongson64/dma-coherence.h | 69 ---------------------- 1 file changed, 69 deletions(-) delete mode 100644 arch/mips/include/asm/mach-loongson64/dma-coherence.h (limited to 'arch/mips/include') diff --git a/arch/mips/include/asm/mach-loongson64/dma-coherence.h b/arch/mips/include/asm/mach-loongson64/dma-coherence.h deleted file mode 100644 index 651dd2eb3ee5..000000000000 --- a/arch/mips/include/asm/mach-loongson64/dma-coherence.h +++ /dev/null @@ -1,69 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2006, 07 Ralf Baechle - * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology - * Author: Fuxin Zhang, zhangfx@lemote.com - * - */ -#ifndef __ASM_MACH_LOONGSON64_DMA_COHERENCE_H -#define __ASM_MACH_LOONGSON64_DMA_COHERENCE_H - -#ifdef CONFIG_SWIOTLB -#include -#endif - -struct device; - -static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, - size_t size) -{ - return virt_to_phys(addr) | 0x80000000; -} - -static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, - struct page *page) -{ - return page_to_phys(page) | 0x80000000; -} - -static inline unsigned long plat_dma_addr_to_phys(struct device *dev, - dma_addr_t dma_addr) -{ -#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT) - return (dma_addr > 0x8fffffff) ? dma_addr : (dma_addr & 0x0fffffff); -#else - return dma_addr & 0x7fffffff; -#endif -} - -static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, - size_t size, enum dma_data_direction direction) -{ -} - -static inline int plat_dma_supported(struct device *dev, u64 mask) -{ - /* - * we fall back to GFP_DMA when the mask isn't all 1s, - * so we can't guarantee allocations that must be - * within a tighter range than GFP_DMA.. - */ - if (mask < DMA_BIT_MASK(24)) - return 0; - - return 1; -} - -static inline int plat_device_is_coherent(struct device *dev) -{ - return 0; -} - -static inline void plat_post_dma_flush(struct device *dev) -{ -} - -#endif /* __ASM_MACH_LOONGSON64_DMA_COHERENCE_H */ -- cgit v1.2.3-55-g7522