search for: __iommu_dma_unmap

...#include <linux/pci.h> +#include <linux/swiotlb.h> #include <linux/scatterlist.h> #include <linux/vmalloc.h> #include <linux/crash_dump.h> +#include <linux/dma-direct.h> struct iommu_dma_msi_page { struct list_head list; @@ -505,29 +507,89 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, iommu_tlb_sync(domain, &iotlb_gather); } + iommu_dma_free_iova(cookie, dma_addr, size, freelist); } +static void __iommu_dma_unmap_swiotlb(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction dir, + unsigned long...

...- drivers/iommu/dma-iommu.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index bd09b6b31c4e..0cf52fae1471 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -471,7 +471,7 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, } static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys, - size_t size, int prot) + size_t size, int prot, dma_addr_t dma_mask) { struct iommu_domain *domain = iommu_get_dma_domain(dev); struct iommu_dma_cookie *cookie = domain-&g...

...) + return NULL; + return page_address(page); + } + + return iommu_dma_alloc_remap(dev, size, handle, gfp | __GFP_ZERO, + PAGE_KERNEL, 0); +} + +static void iommu_dma_free_noncoherent(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t handle, enum dma_data_direction dir) +{ + __iommu_dma_unmap(dev, handle, size); + __iommu_dma_free(dev, size, cpu_addr); +} +#else +#define iommu_dma_alloc_noncoherent NULL +#define iommu_dma_free_noncoherent NULL +#endif /* CONFIG_DMA_REMAP */ + static int iommu_dma_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_a...

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

...-strict mode */ queue_iova(iovad, iova_pfn(iovad, iova), - size >> iova_shift(iovad), 0); + size >> iova_shift(iovad), + (unsigned long) freelist); else free_iova_fast(iovad, iova_pfn(iovad, iova), size >> iova_shift(iovad)); @@ -461,18 +476,26 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, struct iova_domain *iovad = &cookie->iovad; size_t iova_off = iova_offset(iovad, dma_addr); struct iommu_iotlb_gather iotlb_gather; + struct page *freelist = NULL; size_t unmapped; dma_addr -= iova_off; size = iova_align(iovad, size + io...

...-strict mode */ queue_iova(iovad, iova_pfn(iovad, iova), - size >> iova_shift(iovad), 0); + size >> iova_shift(iovad), + (unsigned long) freelist); else free_iova_fast(iovad, iova_pfn(iovad, iova), size >> iova_shift(iovad)); @@ -461,18 +476,26 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, struct iova_domain *iovad = &cookie->iovad; size_t iova_off = iova_offset(iovad, dma_addr); struct iommu_iotlb_gather iotlb_gather; + struct page *freelist = NULL; size_t unmapped; dma_addr -= iova_off; size = iova_align(iovad, size + io...

...-strict mode */ queue_iova(iovad, iova_pfn(iovad, iova), - size >> iova_shift(iovad), 0); + size >> iova_shift(iovad), + (unsigned long) freelist); else free_iova_fast(iovad, iova_pfn(iovad, iova), size >> iova_shift(iovad)); @@ -462,18 +477,26 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, struct iova_domain *iovad = &cookie->iovad; size_t iova_off = iova_offset(iovad, dma_addr); struct iommu_iotlb_gather iotlb_gather; + struct page *freelist = NULL; size_t unmapped; dma_addr -= iova_off; size = iova_align(iovad, size + io...

...-strict mode */ queue_iova(iovad, iova_pfn(iovad, iova), - size >> iova_shift(iovad), 0); + size >> iova_shift(iovad), + (unsigned long) freelist); else free_iova_fast(iovad, iova_pfn(iovad, iova), size >> iova_shift(iovad)); @@ -461,18 +476,26 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, struct iova_domain *iovad = &cookie->iovad; size_t iova_off = iova_offset(iovad, dma_addr); struct iommu_iotlb_gather iotlb_gather; + struct page *freelist = NULL; size_t unmapped; dma_addr -= iova_off; size = iova_align(iovad, size + io...

...ova_pfn(iovad, iova), > - size >> iova_shift(iovad), 0); > + size >> iova_shift(iovad), > + (unsigned long) freelist); > else > free_iova_fast(iovad, iova_pfn(iovad, iova), > size >> iova_shift(iovad)); > @@ -461,18 +476,26 @@ static void __iommu_dma_unmap(struct device *dev, dma_addr_t dma_addr, > struct iova_domain *iovad = &cookie->iovad; > size_t iova_off = iova_offset(iovad, dma_addr); > struct iommu_iotlb_gather iotlb_gather; > + struct page *freelist = NULL; > size_t unmapped; > > dma_addr -= iova_...

Convert the AMD iommu driver to the dma-iommu api. Remove the iova handling and reserve region code from the AMD iommu driver. Change-log: V6: -add more details to the description of patch 001-iommu-amd-Remove-unnecessary-locking-from-AMD-iommu-.patch -rename handle_deferred_device to iommu_dma_deferred_attach -fix double tabs in 0003-iommu-dma-iommu-Handle-deferred-devices.patch V5: -Rebase on

Convert the AMD iommu driver to the dma-iommu api. Remove the iova handling and reserve region code from the AMD iommu driver. Change-log: V4: -Rebase on top of linux-next -Split the removing of the unnecessary locking in the amd iommu driver into a seperate patch -refactor the "iommu/dma-iommu: Handle deferred devices" patch and address comments v3: -rename dma_limit to dma_mask -exit

Convert the AMD iommu driver to the dma-iommu api. Remove the iova handling and reserve region code from the AMD iommu driver. Change-log: V4: -Rebase on top of linux-next -Split the removing of the unnecessary locking in the amd iommu driver into a seperate patch -refactor the "iommu/dma-iommu: Handle deferred devices" patch and address comments v3: -rename dma_limit to dma_mask -exit

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 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. As a follow up I

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