search for: is_swiotlb_buff

...ad; + size_t iova_off = iova_offset(iovad, dma_addr); + size_t aligned_size = iova_align(iovad, size + iova_off); + phys_addr_t phys; + + phys = iommu_iova_to_phys(domain, dma_addr); + if (WARN_ON(!phys)) + return; + + __iommu_dma_unmap(dev, dma_addr, size); + +#ifdef CONFIG_SWIOTLB + if (unlikely(is_swiotlb_buffer(phys))) + swiotlb_tbl_unmap_single(dev, phys, size, + aligned_size, dir, attrs); +#endif +} + static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys, - size_t size, int prot, dma_addr_t dma_mask) + size_t org_size, dma_addr_t dma_mask, bool coherent, + enum dma_data_direct...

...t device *dev, phys_addr_t *phys, dma_addr_t *dma_addr, 77 size_t size, enum dma_data_direction dir, unsigned long attrs); 78 void __init swiotlb_exit(void); 79 unsigned int swiotlb_max_segment(void); 80 #else 81 #define swiotlb_force SWIOTLB_NO_FORCE 82 static inline bool is_swiotlb_buffer(phys_addr_t paddr) 83 { 84 return false; 85 } 86 static inline bool swiotlb_map(struct device *dev, phys_addr_t *phys, 87 dma_addr_t *dma_addr, size_t size, enum dma_data_direction dir, 88 unsigned long attrs) 89 { 90 return false; 91 } 92 static inli...

...swiotlb_map(struct device *dev, phys_addr_t *phys, dma_addr_t *dma_addr, void __init swiotlb_exit(void); unsigned int swiotlb_max_segment(void); size_t swiotlb_max_mapping_size(struct device *dev); +bool is_swiotlb_active(void); #else #define swiotlb_force SWIOTLB_NO_FORCE static inline bool is_swiotlb_buffer(phys_addr_t paddr) @@ -100,6 +101,11 @@ static inline size_t swiotlb_max_mapping_size(struct device *dev) { return SIZE_MAX; } + +static inline bool is_swiotlb_active(void) +{ + return false; +} #endif /* CONFIG_SWIOTLB */ extern void swiotlb_print_info(void); diff --git a/kernel/dma/swio...

Hi, here is the next version of this patch-set. Previous versions can be found here: V1: https://lore.kernel.org/lkml/20190110134433.15672-1-joro at 8bytes.org/ V2: https://lore.kernel.org/lkml/20190115132257.6426-1-joro at 8bytes.org/ V3: https://lore.kernel.org/lkml/20190123163049.24863-1-joro at 8bytes.org/ V4: https://lore.kernel.org/lkml/20190129084342.26030-1-joro at 8bytes.org/

...t device *dev, phys_addr_t *phys, dma_addr_t *dma_addr, 78 size_t size, enum dma_data_direction dir, unsigned long attrs); 79 void __init swiotlb_exit(void); 80 unsigned int swiotlb_max_segment(void); 81 #else 82 #define swiotlb_force SWIOTLB_NO_FORCE 83 static inline bool is_swiotlb_buffer(phys_addr_t paddr) 84 { 85 return false; 86 } 87 static inline bool swiotlb_map(struct device *dev, phys_addr_t *phys, 88 dma_addr_t *dma_addr, size_t size, enum dma_data_direction dir, 89 unsigned long attrs) 90 { 91 return false; 92 } 93 static inli...

...94a372f2d4e Lu Baolu 2019-09-06 4018 cfb94a372f2d4e Lu Baolu 2019-09-06 4019 return (phys_addr_t)iova_pfn << PAGE_SHIFT; cfb94a372f2d4e Lu Baolu 2019-09-06 4020 cfb94a372f2d4e Lu Baolu 2019-09-06 4021 mapping_error: cfb94a372f2d4e Lu Baolu 2019-09-06 4022 if (is_swiotlb_buffer(tlb_addr)) cfb94a372f2d4e Lu Baolu 2019-09-06 4023 swiotlb_tbl_unmap_single(dev, tlb_addr, size, cfb94a372f2d4e Lu Baolu 2019-09-06 4024 aligned_size, dir, attrs); cfb94a372f2d4e Lu Baolu 2019-09-06 4025 swiotlb_error: cfb94a372f2d4e Lu Baolu 2019-09-06 4026 free_...

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the

This patchset converts the intel iommu driver to the dma-iommu api. While converting the driver I exposed a bug in the intel i915 driver which causes a huge amount of artifacts on the screen of my laptop. You can see a picture of it here: https://github.com/pippy360/kernelPatches/blob/master/IMG_20191219_225922.jpg This issue is most likely in the i915 driver and is most likely caused by the

Hi Ingo, Here''s the chunk of patches to add Xen Dom0 support (it''s probably worth creating a new xen/dom0 topic branch for it). A dom0 Xen domain is basically the same as a normal domU domain, but it has extra privileges to directly access hardware. There are two issues to deal with: - translating to and from the domain''s pseudo-physical addresses and real machine

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. I'm still a

Hi, This is third approach (complete this time) for replacing struct dma_attrs with unsigned long. The main patch (2/45) doing the change is split into many subpatches for easier review (3-43). They should be squashed together when applying. *Important:* Patchset is *only* build tested on allyesconfigs: ARM, ARM64, i386, x86_64 and powerpc. Please provide reviewes and tests for other