From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/ia64/include/asm/dma-mapping.h | 109 +++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 kernel/arch/ia64/include/asm/dma-mapping.h (limited to 'kernel/arch/ia64/include/asm/dma-mapping.h') diff --git a/kernel/arch/ia64/include/asm/dma-mapping.h b/kernel/arch/ia64/include/asm/dma-mapping.h new file mode 100644 index 000000000..cf3ab7e78 --- /dev/null +++ b/kernel/arch/ia64/include/asm/dma-mapping.h @@ -0,0 +1,109 @@ +#ifndef _ASM_IA64_DMA_MAPPING_H +#define _ASM_IA64_DMA_MAPPING_H + +/* + * Copyright (C) 2003-2004 Hewlett-Packard Co + * David Mosberger-Tang + */ +#include +#include +#include +#include + +#define ARCH_HAS_DMA_GET_REQUIRED_MASK + +#define DMA_ERROR_CODE 0 + +extern struct dma_map_ops *dma_ops; +extern struct ia64_machine_vector ia64_mv; +extern void set_iommu_machvec(void); + +extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t, + enum dma_data_direction); +extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int, + enum dma_data_direction); + +#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) + +static inline void *dma_alloc_attrs(struct device *dev, size_t size, + dma_addr_t *daddr, gfp_t gfp, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = platform_dma_get_ops(dev); + void *caddr; + + caddr = ops->alloc(dev, size, daddr, gfp, attrs); + debug_dma_alloc_coherent(dev, size, *daddr, caddr); + return caddr; +} + +#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) + +static inline void dma_free_attrs(struct device *dev, size_t size, + void *caddr, dma_addr_t daddr, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = platform_dma_get_ops(dev); + debug_dma_free_coherent(dev, size, caddr, daddr); + ops->free(dev, size, caddr, daddr, attrs); +} + +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) + +#define get_dma_ops(dev) platform_dma_get_ops(dev) + +#include + +static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr) +{ + struct dma_map_ops *ops = platform_dma_get_ops(dev); + debug_dma_mapping_error(dev, daddr); + return ops->mapping_error(dev, daddr); +} + +static inline int dma_supported(struct device *dev, u64 mask) +{ + struct dma_map_ops *ops = platform_dma_get_ops(dev); + return ops->dma_supported(dev, mask); +} + +static inline int +dma_set_mask (struct device *dev, u64 mask) +{ + if (!dev->dma_mask || !dma_supported(dev, mask)) + return -EIO; + *dev->dma_mask = mask; + return 0; +} + +static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) +{ + if (!dev->dma_mask) + return 0; + + return addr + size - 1 <= *dev->dma_mask; +} + +static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + return paddr; +} + +static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr) +{ + return daddr; +} + +static inline void +dma_cache_sync (struct device *dev, void *vaddr, size_t size, + enum dma_data_direction dir) +{ + /* + * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to + * ensure that dma_cache_sync() enforces order, hence the mb(). + */ + mb(); +} + +#endif /* _ASM_IA64_DMA_MAPPING_H */ -- cgit 1.2.3-korg