From e20dd88995dffe262934f355b3e96daa2458b331 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 20 Jan 2016 15:01:38 -0800 Subject: [PATCH] cris: convert to dma_map_ops Signed-off-by: Christoph Hellwig Cc: Mikael Starvik Cc: Jesper Nilsson Cc: Christian Borntraeger Cc: Joerg Roedel Cc: Sebastian Ott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/cris/Kconfig | 1 + arch/cris/arch-v32/drivers/pci/dma.c | 54 +++++++-- arch/cris/include/asm/dma-mapping.h | 161 ++------------------------- 3 files changed, 51 insertions(+), 165 deletions(-) diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index e086f9e93728..20d919c93c7f 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -54,6 +54,7 @@ config CRIS select GENERIC_ATOMIC64 select HAVE_UID16 select VIRT_TO_BUS + select HAVE_DMA_ATTRS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW select GENERIC_IOMAP diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c index ee55578d9834..8d5efa58cce1 100644 --- a/arch/cris/arch-v32/drivers/pci/dma.c +++ b/arch/cris/arch-v32/drivers/pci/dma.c @@ -16,21 +16,18 @@ #include #include -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *v32_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; - int order = get_order(size); + /* ignore region specifiers */ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); - if (dma_alloc_from_coherent(dev, size, dma_handle, &ret)) - return ret; - if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff)) gfp |= GFP_DMA; - ret = (void *)__get_free_pages(gfp, order); + ret = (void *)__get_free_pages(gfp, get_order(size)); if (ret != NULL) { memset(ret, 0, size); @@ -39,12 +36,45 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) +static void v32_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +static inline dma_addr_t v32_dma_map_page(struct device *dev, + struct page *page, unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) { - int order = get_order(size); + return page_to_phys(page) + offset; +} - if (!dma_release_from_coherent(dev, order, vaddr)) - free_pages((unsigned long)vaddr, order); +static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + printk("Map sg\n"); + return nents; +} + +static inline int v32_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 < 0x00ffffff) + return 0; + return 1; } +struct dma_map_ops v32_dma_ops = { + .alloc = v32_dma_alloc, + .free = v32_dma_free, + .map_page = v32_dma_map_page, + .map_sg = v32_dma_map_sg, + .dma_supported = v32_dma_supported, +}; +EXPORT_SYMBOL(v32_dma_ops); diff --git a/arch/cris/include/asm/dma-mapping.h b/arch/cris/include/asm/dma-mapping.h index 57f794ee6039..34e7c7c7eccb 100644 --- a/arch/cris/include/asm/dma-mapping.h +++ b/arch/cris/include/asm/dma-mapping.h @@ -1,156 +1,22 @@ -/* DMA mapping. Nothing tricky here, just virt_to_phys */ - #ifndef _ASM_CRIS_DMA_MAPPING_H #define _ASM_CRIS_DMA_MAPPING_H -#include -#include -#include - -#include -#include - -#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) - #ifdef CONFIG_PCI -#include - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); +extern struct dma_map_ops v32_dma_ops; -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); -#else -static inline void * -dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - BUG(); - return NULL; + return &v32_dma_ops; } - -static inline void -dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) +#else +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - BUG(); + BUG(); + return NULL; } #endif -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return virt_to_phys(ptr); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - printk("Map sg\n"); - return nents; -} - -static inline dma_addr_t -dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); - return page_to_phys(page) + offset; -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - BUG_ON(direction == DMA_NONE); -} - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -} -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ -} - -static inline int -dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - -static inline int -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 < 0x00ffffff) - return 0; - - return 1; -} - -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; -} +#include static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, @@ -158,15 +24,4 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size, { } -/* drivers/base/dma-mapping.c */ -extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size); -extern int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size); - -#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s) -#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s) - - #endif -- 2.20.1