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author | Christoph Hellwig <hch@lst.de> | 2022-04-19 09:48:53 +0200 |
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committer | Christoph Hellwig <hch@lst.de> | 2022-07-07 18:18:57 +0200 |
commit | f9774cfd5062d69dc8ba522369638f919c35391e (patch) | |
tree | db3d511ddb830d951551a2504532f78b7188b582 /arch/arm/mm | |
parent | ARM/dma-mapping: remove the unused virt_to_dma helper (diff) | |
download | linux-f9774cfd5062d69dc8ba522369638f919c35391e.tar.xz linux-f9774cfd5062d69dc8ba522369638f919c35391e.zip |
ARM/dma-mapping: use dma_to_phys/phys_to_dma in the dma-mapping code
Use the helpers as expected by the dma-direct code in the old arm
dma-mapping code to ease a gradual switch to the common DMA code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r-- | arch/arm/mm/dma-mapping.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 90142183d104..a09ce16c7ddb 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -128,14 +128,14 @@ static dma_addr_t arm_dma_map_page(struct device *dev, struct page *page, { if ((attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0) __dma_page_cpu_to_dev(page, offset, size, dir); - return pfn_to_dma(dev, page_to_pfn(page)) + offset; + return phys_to_dma(dev, page_to_phys(page) + offset); } static dma_addr_t arm_coherent_dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, unsigned long attrs) { - return pfn_to_dma(dev, page_to_pfn(page)) + offset; + return phys_to_dma(dev, page_to_phys(page) + offset); } /** @@ -156,7 +156,7 @@ static void arm_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir, unsigned long attrs) { if ((attrs & DMA_ATTR_SKIP_CPU_SYNC) == 0) - __dma_page_dev_to_cpu(pfn_to_page(dma_to_pfn(dev, handle)), + __dma_page_dev_to_cpu(phys_to_page(dma_to_phys(dev, handle)), handle & ~PAGE_MASK, size, dir); } @@ -164,7 +164,7 @@ static void arm_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { unsigned int offset = handle & (PAGE_SIZE - 1); - struct page *page = pfn_to_page(dma_to_pfn(dev, handle-offset)); + struct page *page = phys_to_page(dma_to_phys(dev, handle-offset)); __dma_page_dev_to_cpu(page, offset, size, dir); } @@ -172,7 +172,7 @@ static void arm_dma_sync_single_for_device(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { unsigned int offset = handle & (PAGE_SIZE - 1); - struct page *page = pfn_to_page(dma_to_pfn(dev, handle-offset)); + struct page *page = phys_to_page(dma_to_phys(dev, handle-offset)); __dma_page_cpu_to_dev(page, offset, size, dir); } @@ -190,7 +190,7 @@ static int arm_dma_supported(struct device *dev, u64 mask) * Translate the device's DMA mask to a PFN limit. This * PFN number includes the page which we can DMA to. */ - return dma_to_pfn(dev, mask) >= max_dma_pfn; + return PHYS_PFN(dma_to_phys(dev, mask)) >= max_dma_pfn; } static void __dma_clear_buffer(struct page *page, size_t size, int coherent_flag) @@ -681,7 +681,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, if (page) { unsigned long flags; - *handle = pfn_to_dma(dev, page_to_pfn(page)); + *handle = phys_to_dma(dev, page_to_phys(page)); buf->virt = args.want_vaddr ? addr : page; spin_lock_irqsave(&arm_dma_bufs_lock, flags); @@ -721,7 +721,7 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, int ret = -ENXIO; unsigned long nr_vma_pages = vma_pages(vma); unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned long pfn = dma_to_pfn(dev, dma_addr); + unsigned long pfn = PHYS_PFN(dma_to_phys(dev, dma_addr)); unsigned long off = vma->vm_pgoff; if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) @@ -762,7 +762,7 @@ static void __arm_dma_free(struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle, unsigned long attrs, bool is_coherent) { - struct page *page = pfn_to_page(dma_to_pfn(dev, handle)); + struct page *page = phys_to_page(dma_to_phys(dev, handle)); struct arm_dma_buffer *buf; struct arm_dma_free_args args = { .dev = dev, @@ -796,15 +796,15 @@ 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) { - unsigned long pfn = dma_to_pfn(dev, handle); + phys_addr_t paddr = dma_to_phys(dev, handle); struct page *page; int ret; /* If the PFN is not valid, we do not have a struct page */ - if (!pfn_valid(pfn)) + if (!pfn_valid(PHYS_PFN(paddr))) return -ENXIO; - page = pfn_to_page(pfn); + page = phys_to_page(paddr); ret = sg_alloc_table(sgt, 1, GFP_KERNEL); if (unlikely(ret)) |