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arm64: Combine coherent and non-coherent swiotlb dma_ops
Since dev_archdata now has a dma_coherent state, combine the two coherent and non-coherent operations and remove their declaration, together with set_dma_ops, from the arch dma-mapping.h file. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas
parent
9f71ac961b
commit
9d3bfbb4df
@ -28,8 +28,6 @@
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#define DMA_ERROR_CODE (~(dma_addr_t)0)
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extern struct dma_map_ops *dma_ops;
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extern struct dma_map_ops coherent_swiotlb_dma_ops;
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extern struct dma_map_ops noncoherent_swiotlb_dma_ops;
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static inline struct dma_map_ops *__generic_dma_ops(struct device *dev)
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{
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@ -47,23 +45,18 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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return __generic_dma_ops(dev);
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}
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static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
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{
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dev->archdata.dma_ops = ops;
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}
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static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
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struct iommu_ops *iommu, bool coherent)
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{
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dev->archdata.dma_coherent = coherent;
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if (coherent)
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set_dma_ops(dev, &coherent_swiotlb_dma_ops);
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}
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#define arch_setup_dma_ops arch_setup_dma_ops
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/* do not use this function in a driver */
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static inline bool is_device_dma_coherent(struct device *dev)
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{
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if (!dev)
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return false;
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return dev->archdata.dma_coherent;
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}
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@ -134,16 +134,17 @@ static void __dma_free_coherent(struct device *dev, size_t size,
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swiotlb_free_coherent(dev, size, vaddr, dma_handle);
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}
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static void *__dma_alloc_noncoherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags,
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struct dma_attrs *attrs)
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static void *__dma_alloc(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags,
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struct dma_attrs *attrs)
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{
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struct page *page;
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void *ptr, *coherent_ptr;
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bool coherent = is_device_dma_coherent(dev);
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size = PAGE_ALIGN(size);
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if (!(flags & __GFP_WAIT)) {
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if (!coherent && !(flags & __GFP_WAIT)) {
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struct page *page = NULL;
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void *addr = __alloc_from_pool(size, &page);
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@ -151,13 +152,16 @@ static void *__dma_alloc_noncoherent(struct device *dev, size_t size,
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*dma_handle = phys_to_dma(dev, page_to_phys(page));
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return addr;
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}
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ptr = __dma_alloc_coherent(dev, size, dma_handle, flags, attrs);
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if (!ptr)
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goto no_mem;
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/* no need for non-cacheable mapping if coherent */
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if (coherent)
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return ptr;
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/* remove any dirty cache lines on the kernel alias */
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__dma_flush_range(ptr, ptr + size);
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@ -179,15 +183,17 @@ no_mem:
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return NULL;
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}
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static void __dma_free_noncoherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle,
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struct dma_attrs *attrs)
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static void __dma_free(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle,
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struct dma_attrs *attrs)
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{
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void *swiotlb_addr = phys_to_virt(dma_to_phys(dev, dma_handle));
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if (__free_from_pool(vaddr, size))
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return;
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vunmap(vaddr);
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if (!is_device_dma_coherent(dev)) {
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if (__free_from_pool(vaddr, size))
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return;
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vunmap(vaddr);
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}
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__dma_free_coherent(dev, size, swiotlb_addr, dma_handle, attrs);
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}
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@ -199,7 +205,8 @@ static dma_addr_t __swiotlb_map_page(struct device *dev, struct page *page,
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dma_addr_t dev_addr;
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dev_addr = swiotlb_map_page(dev, page, offset, size, dir, attrs);
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__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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if (!is_device_dma_coherent(dev))
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__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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return dev_addr;
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}
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@ -209,7 +216,8 @@ static void __swiotlb_unmap_page(struct device *dev, dma_addr_t dev_addr,
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size_t size, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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if (!is_device_dma_coherent(dev))
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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swiotlb_unmap_page(dev, dev_addr, size, dir, attrs);
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}
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@ -221,9 +229,10 @@ static int __swiotlb_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
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int i, ret;
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ret = swiotlb_map_sg_attrs(dev, sgl, nelems, dir, attrs);
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for_each_sg(sgl, sg, ret, i)
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__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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if (!is_device_dma_coherent(dev))
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for_each_sg(sgl, sg, ret, i)
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__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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return ret;
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}
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@ -236,9 +245,10 @@ static void __swiotlb_unmap_sg_attrs(struct device *dev,
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struct scatterlist *sg;
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int i;
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for_each_sg(sgl, sg, nelems, i)
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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if (!is_device_dma_coherent(dev))
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for_each_sg(sgl, sg, nelems, i)
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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swiotlb_unmap_sg_attrs(dev, sgl, nelems, dir, attrs);
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}
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@ -246,7 +256,8 @@ static void __swiotlb_sync_single_for_cpu(struct device *dev,
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dma_addr_t dev_addr, size_t size,
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enum dma_data_direction dir)
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{
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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if (!is_device_dma_coherent(dev))
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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swiotlb_sync_single_for_cpu(dev, dev_addr, size, dir);
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}
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@ -255,7 +266,8 @@ static void __swiotlb_sync_single_for_device(struct device *dev,
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enum dma_data_direction dir)
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{
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swiotlb_sync_single_for_device(dev, dev_addr, size, dir);
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__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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if (!is_device_dma_coherent(dev))
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__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
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}
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static void __swiotlb_sync_sg_for_cpu(struct device *dev,
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@ -265,9 +277,10 @@ static void __swiotlb_sync_sg_for_cpu(struct device *dev,
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struct scatterlist *sg;
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int i;
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for_each_sg(sgl, sg, nelems, i)
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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if (!is_device_dma_coherent(dev))
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for_each_sg(sgl, sg, nelems, i)
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__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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swiotlb_sync_sg_for_cpu(dev, sgl, nelems, dir);
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}
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@ -279,9 +292,10 @@ static void __swiotlb_sync_sg_for_device(struct device *dev,
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int i;
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swiotlb_sync_sg_for_device(dev, sgl, nelems, dir);
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for_each_sg(sgl, sg, nelems, i)
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__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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if (!is_device_dma_coherent(dev))
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for_each_sg(sgl, sg, nelems, i)
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__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
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sg->length, dir);
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}
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/* vma->vm_page_prot must be set appropriately before calling this function */
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@ -308,28 +322,20 @@ static int __dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
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return ret;
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}
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static int __swiotlb_mmap_noncoherent(struct device *dev,
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struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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struct dma_attrs *attrs)
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static int __swiotlb_mmap(struct device *dev,
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struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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struct dma_attrs *attrs)
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{
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vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot, false);
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vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot,
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is_device_dma_coherent(dev));
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return __dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
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}
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static int __swiotlb_mmap_coherent(struct device *dev,
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struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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struct dma_attrs *attrs)
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{
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/* Just use whatever page_prot attributes were specified */
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return __dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
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}
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struct dma_map_ops noncoherent_swiotlb_dma_ops = {
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.alloc = __dma_alloc_noncoherent,
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.free = __dma_free_noncoherent,
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.mmap = __swiotlb_mmap_noncoherent,
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static struct dma_map_ops swiotlb_dma_ops = {
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.alloc = __dma_alloc,
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.free = __dma_free,
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.mmap = __swiotlb_mmap,
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.map_page = __swiotlb_map_page,
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.unmap_page = __swiotlb_unmap_page,
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.map_sg = __swiotlb_map_sg_attrs,
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@ -341,24 +347,6 @@ struct dma_map_ops noncoherent_swiotlb_dma_ops = {
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.dma_supported = swiotlb_dma_supported,
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.mapping_error = swiotlb_dma_mapping_error,
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};
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EXPORT_SYMBOL(noncoherent_swiotlb_dma_ops);
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struct dma_map_ops coherent_swiotlb_dma_ops = {
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.alloc = __dma_alloc_coherent,
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.free = __dma_free_coherent,
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.mmap = __swiotlb_mmap_coherent,
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.map_page = swiotlb_map_page,
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.unmap_page = swiotlb_unmap_page,
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.map_sg = swiotlb_map_sg_attrs,
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.unmap_sg = swiotlb_unmap_sg_attrs,
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.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
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.sync_single_for_device = swiotlb_sync_single_for_device,
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.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
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.sync_sg_for_device = swiotlb_sync_sg_for_device,
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.dma_supported = swiotlb_dma_supported,
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.mapping_error = swiotlb_dma_mapping_error,
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};
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EXPORT_SYMBOL(coherent_swiotlb_dma_ops);
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extern int swiotlb_late_init_with_default_size(size_t default_size);
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@ -427,7 +415,7 @@ static int __init swiotlb_late_init(void)
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{
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size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT);
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dma_ops = &noncoherent_swiotlb_dma_ops;
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dma_ops = &swiotlb_dma_ops;
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return swiotlb_late_init_with_default_size(swiotlb_size);
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}
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