diff options
111 files changed, 705 insertions, 804 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index 45ef3f279c3b..1d26eeb6b5f6 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -369,35 +369,32 @@ See also dma_map_single(). dma_addr_t dma_map_single_attrs(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) void dma_unmap_single_attrs(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) int dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) The four functions above are just like the counterpart functions without the _attrs suffixes, except that they pass an optional -struct dma_attrs*. - -struct dma_attrs encapsulates a set of "DMA attributes". For the -definition of struct dma_attrs see linux/dma-attrs.h. +dma_attrs. The interpretation of DMA attributes is architecture-specific, and each attribute should be documented in Documentation/DMA-attributes.txt. -If struct dma_attrs* is NULL, the semantics of each of these -functions is identical to those of the corresponding function +If dma_attrs are 0, the semantics of each of these functions +is identical to those of the corresponding function without the _attrs suffix. As a result dma_map_single_attrs() can generally replace dma_map_single(), etc. @@ -405,15 +402,15 @@ As an example of the use of the *_attrs functions, here's how you could pass an attribute DMA_ATTR_FOO when mapping memory for DMA: -#include <linux/dma-attrs.h> -/* DMA_ATTR_FOO should be defined in linux/dma-attrs.h and +#include <linux/dma-mapping.h> +/* DMA_ATTR_FOO should be defined in linux/dma-mapping.h and * documented in Documentation/DMA-attributes.txt */ ... - DEFINE_DMA_ATTRS(attrs); - dma_set_attr(DMA_ATTR_FOO, &attrs); + unsigned long attr; + attr |= DMA_ATTR_FOO; .... - n = dma_map_sg_attrs(dev, sg, nents, DMA_TO_DEVICE, &attr); + n = dma_map_sg_attrs(dev, sg, nents, DMA_TO_DEVICE, attr); .... Architectures that care about DMA_ATTR_FOO would check for its @@ -422,12 +419,10 @@ routines, e.g.: void whizco_dma_map_sg_attrs(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { .... - int foo = dma_get_attr(DMA_ATTR_FOO, attrs); - .... - if (foo) + if (attrs & DMA_ATTR_FOO) /* twizzle the frobnozzle */ .... diff --git a/Documentation/DMA-attributes.txt b/Documentation/DMA-attributes.txt index e8cf9cf873b3..2d455a5cf671 100644 --- a/Documentation/DMA-attributes.txt +++ b/Documentation/DMA-attributes.txt @@ -2,7 +2,7 @@ ============== This document describes the semantics of the DMA attributes that are -defined in linux/dma-attrs.h. +defined in linux/dma-mapping.h. DMA_ATTR_WRITE_BARRIER ---------------------- diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h index 3c3451f58ff4..c63b6ac19ee5 100644 --- a/arch/alpha/include/asm/dma-mapping.h +++ b/arch/alpha/include/asm/dma-mapping.h @@ -1,8 +1,6 @@ #ifndef _ALPHA_DMA_MAPPING_H #define _ALPHA_DMA_MAPPING_H -#include <linux/dma-attrs.h> - extern struct dma_map_ops *dma_ops; static inline struct dma_map_ops *get_dma_ops(struct device *dev) diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c index 8e735b5e56bd..bb152e21e5ae 100644 --- a/arch/alpha/kernel/pci-noop.c +++ b/arch/alpha/kernel/pci-noop.c @@ -109,7 +109,7 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn, static void *alpha_noop_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { void *ret; diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index 8969bf2dfe3a..451fc9cdd323 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -349,7 +349,7 @@ static struct pci_dev *alpha_gendev_to_pci(struct device *dev) static dma_addr_t alpha_pci_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_dev *pdev = alpha_gendev_to_pci(dev); int dac_allowed; @@ -369,7 +369,7 @@ static dma_addr_t alpha_pci_map_page(struct device *dev, struct page *page, static void alpha_pci_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { unsigned long flags; struct pci_dev *pdev = alpha_gendev_to_pci(dev); @@ -433,7 +433,7 @@ static void alpha_pci_unmap_page(struct device *dev, dma_addr_t dma_addr, static void *alpha_pci_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addrp, gfp_t gfp, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_dev *pdev = alpha_gendev_to_pci(dev); void *cpu_addr; @@ -478,7 +478,7 @@ try_again: static void alpha_pci_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_dev *pdev = alpha_gendev_to_pci(dev); pci_unmap_single(pdev, dma_addr, size, PCI_DMA_BIDIRECTIONAL); @@ -651,7 +651,7 @@ sg_fill(struct device *dev, struct scatterlist *leader, struct scatterlist *end, static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_dev *pdev = alpha_gendev_to_pci(dev); struct scatterlist *start, *end, *out; @@ -729,7 +729,7 @@ static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg, static void alpha_pci_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, - struct dma_attrs *attrs) + unsigned long attrs) { struct pci_dev *pdev = alpha_gendev_to_pci(dev); unsigned long flags; diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c index ab74b5d9186c..20afc65e22dc 100644 --- a/arch/arc/mm/dma.c +++ b/arch/arc/mm/dma.c @@ -22,7 +22,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) + dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs) { unsigned long order = get_order(size); struct page *page; @@ -46,7 +46,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size, * (vs. always going to memory - thus are faster) */ if ((is_isa_arcv2() && ioc_exists) || - dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs)) + (attrs & DMA_ATTR_NON_CONSISTENT)) need_coh = 0; /* @@ -90,13 +90,13 @@ static void *arc_dma_alloc(struct device *dev, size_t size, } static void arc_dma_free(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle, struct dma_attrs *attrs) + dma_addr_t dma_handle, unsigned long attrs) |