From 5ed390e5a9d4d84f220e012ee20ae97fc254a9d9 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 19 Apr 2022 09:40:17 +0200 Subject: ARM/dma-mapping: mark various dma-mapping routines static in dma-mapping.c With the dmabounce removal these aren't used outside of dma-mapping.c, so mark them static. Move the dma_map_ops declarations down a bit to avoid lots of forward declarations. Signed-off-by: Christoph Hellwig Reviewed-by: Arnd Bergmann Tested-by: Marc Zyngier --- arch/arm/mm/dma-mapping.c | 100 +++++++++++++++++++++------------------------- 1 file changed, 46 insertions(+), 54 deletions(-) (limited to 'arch/arm/mm/dma-mapping.c') diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 059cce018570..90142183d104 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -193,50 +193,6 @@ static int arm_dma_supported(struct device *dev, u64 mask) return dma_to_pfn(dev, mask) >= max_dma_pfn; } -const struct dma_map_ops arm_dma_ops = { - .alloc = arm_dma_alloc, - .free = arm_dma_free, - .alloc_pages = dma_direct_alloc_pages, - .free_pages = dma_direct_free_pages, - .mmap = arm_dma_mmap, - .get_sgtable = arm_dma_get_sgtable, - .map_page = arm_dma_map_page, - .unmap_page = arm_dma_unmap_page, - .map_sg = arm_dma_map_sg, - .unmap_sg = arm_dma_unmap_sg, - .map_resource = dma_direct_map_resource, - .sync_single_for_cpu = arm_dma_sync_single_for_cpu, - .sync_single_for_device = arm_dma_sync_single_for_device, - .sync_sg_for_cpu = arm_dma_sync_sg_for_cpu, - .sync_sg_for_device = arm_dma_sync_sg_for_device, - .dma_supported = arm_dma_supported, - .get_required_mask = dma_direct_get_required_mask, -}; -EXPORT_SYMBOL(arm_dma_ops); - -static void *arm_coherent_dma_alloc(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t gfp, unsigned long attrs); -static void arm_coherent_dma_free(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t handle, unsigned long attrs); -static int arm_coherent_dma_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size, - unsigned long attrs); - -const struct dma_map_ops arm_coherent_dma_ops = { - .alloc = arm_coherent_dma_alloc, - .free = arm_coherent_dma_free, - .alloc_pages = dma_direct_alloc_pages, - .free_pages = dma_direct_free_pages, - .mmap = arm_coherent_dma_mmap, - .get_sgtable = arm_dma_get_sgtable, - .map_page = arm_coherent_dma_map_page, - .map_sg = arm_dma_map_sg, - .map_resource = dma_direct_map_resource, - .dma_supported = arm_dma_supported, - .get_required_mask = dma_direct_get_required_mask, -}; -EXPORT_SYMBOL(arm_coherent_dma_ops); - static void __dma_clear_buffer(struct page *page, size_t size, int coherent_flag) { /* @@ -742,7 +698,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, * Allocate DMA-coherent memory space and return both the kernel remapped * virtual and bus address for that space. */ -void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, +static void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, unsigned long attrs) { pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL); @@ -791,7 +747,7 @@ static int arm_coherent_dma_mmap(struct device *dev, struct vm_area_struct *vma, return __arm_dma_mmap(dev, vma, cpu_addr, dma_addr, size, attrs); } -int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, +static int arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs) { @@ -824,7 +780,7 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr, kfree(buf); } -void arm_dma_free(struct device *dev, size_t size, void *cpu_addr, +static void arm_dma_free(struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle, unsigned long attrs) { __arm_dma_free(dev, size, cpu_addr, handle, attrs, false); @@ -836,7 +792,7 @@ static void arm_coherent_dma_free(struct device *dev, size_t size, void *cpu_add __arm_dma_free(dev, size, cpu_addr, handle, attrs, true); } -int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt, +static int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t handle, size_t size, unsigned long attrs) { @@ -977,7 +933,7 @@ static void __dma_page_dev_to_cpu(struct page *page, unsigned long off, * Device ownership issues as mentioned for dma_map_single are the same * here. */ -int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, +static int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs) { const struct dma_map_ops *ops = get_dma_ops(dev); @@ -1013,8 +969,8 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, * Unmap a set of streaming mode DMA translations. Again, CPU access * rules concerning calls here are the same as for dma_unmap_single(). */ -void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir, unsigned long attrs) +static void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, unsigned long attrs) { const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; @@ -1032,7 +988,7 @@ void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, * @nents: number of buffers to map (returned from dma_map_sg) * @dir: DMA transfer direction (same as was passed to dma_map_sg) */ -void arm_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, +static void arm_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir) { const struct dma_map_ops *ops = get_dma_ops(dev); @@ -1051,8 +1007,8 @@ void arm_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, * @nents: number of buffers to map (returned from dma_map_sg) * @dir: DMA transfer direction (same as was passed to dma_map_sg) */ -void arm_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir) +static void arm_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, int nents, enum dma_data_direction dir) { const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; @@ -1063,6 +1019,42 @@ void arm_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, dir); } +const struct dma_map_ops arm_dma_ops = { + .alloc = arm_dma_alloc, + .free = arm_dma_free, + .alloc_pages = dma_direct_alloc_pages, + .free_pages = dma_direct_free_pages, + .mmap = arm_dma_mmap, + .get_sgtable = arm_dma_get_sgtable, + .map_page = arm_dma_map_page, + .unmap_page = arm_dma_unmap_page, + .map_sg = arm_dma_map_sg, + .unmap_sg = arm_dma_unmap_sg, + .map_resource = dma_direct_map_resource, + .sync_single_for_cpu = arm_dma_sync_single_for_cpu, + .sync_single_for_device = arm_dma_sync_single_for_device, + .sync_sg_for_cpu = arm_dma_sync_sg_for_cpu, + .sync_sg_for_device = arm_dma_sync_sg_for_device, + .dma_supported = arm_dma_supported, + .get_required_mask = dma_direct_get_required_mask, +}; +EXPORT_SYMBOL(arm_dma_ops); + +const struct dma_map_ops arm_coherent_dma_ops = { + .alloc = arm_coherent_dma_alloc, + .free = arm_coherent_dma_free, + .alloc_pages = dma_direct_alloc_pages, + .free_pages = dma_direct_free_pages, + .mmap = arm_coherent_dma_mmap, + .get_sgtable = arm_dma_get_sgtable, + .map_page = arm_coherent_dma_map_page, + .map_sg = arm_dma_map_sg, + .map_resource = dma_direct_map_resource, + .dma_supported = arm_dma_supported, + .get_required_mask = dma_direct_get_required_mask, +}; +EXPORT_SYMBOL(arm_coherent_dma_ops); + static const struct dma_map_ops *arm_get_dma_map_ops(bool coherent) { /* -- cgit