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authorChristoph Hellwig <hch@lst.de>2018-06-15 13:08:50 +0200
committerPaul Burton <paul.burton@mips.com>2018-06-24 09:27:27 -0700
commitc5e2bbb45d28d53d278f25068142a283a0a74f7a (patch)
tree9527bd52fc31b960b1a969e9f4c0a535d17ee8f7 /arch/mips/include/asm/mach-jazz
parentd1f2564a5639bb54493eaa313aef612aee47ba7c (diff)
MIPS: jazz: split dma mapping operations from dma-default
Jazz actually has a very basic IOMMU, so split the ops into a separate implementation from the generic default support (which is about to go away anyway). Signed-off-by: Christoph Hellwig <hch@lst.de> Patchwork: https://patchwork.linux-mips.org/patch/19548/ Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: David Daney <david.daney@cavium.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de> Cc: Huacai Chen <chenhc@lemote.com> Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org
Diffstat (limited to 'arch/mips/include/asm/mach-jazz')
-rw-r--r--arch/mips/include/asm/mach-jazz/dma-coherence.h60
1 files changed, 0 insertions, 60 deletions
diff --git a/arch/mips/include/asm/mach-jazz/dma-coherence.h b/arch/mips/include/asm/mach-jazz/dma-coherence.h
deleted file mode 100644
index dc347c25c343..000000000000
--- a/arch/mips/include/asm/mach-jazz/dma-coherence.h
+++ /dev/null
@@ -1,60 +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 Ralf Baechle <ralf@linux-mips.org>
- */
-#ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
-#define __ASM_MACH_JAZZ_DMA_COHERENCE_H
-
-#include <asm/jazzdma.h>
-
-struct device;
-
-static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
-{
- return vdma_alloc(virt_to_phys(addr), size);
-}
-
-static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
- struct page *page)
-{
- return vdma_alloc(page_to_phys(page), PAGE_SIZE);
-}
-
-static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
- dma_addr_t dma_addr)
-{
- return vdma_log2phys(dma_addr);
-}
-
-static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
- size_t size, enum dma_data_direction direction)
-{
- vdma_free(dma_addr);
-}
-
-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 void plat_post_dma_flush(struct device *dev)
-{
-}
-
-static inline int plat_device_is_coherent(struct device *dev)
-{
- return 0;
-}
-
-#endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */