On Thu, 17 Jun 2021, Claire Chang wrote:
Update is_swiotlb_buffer to add a struct device argument. This will be useful later to allow for different pools.
Signed-off-by: Claire Chang tientzu@chromium.org Reviewed-by: Christoph Hellwig hch@lst.de Tested-by: Stefano Stabellini sstabellini@kernel.org Tested-by: Will Deacon will@kernel.org
Acked-by: Stefano Stabellini sstabellini@kernel.org
drivers/iommu/dma-iommu.c | 12 ++++++------ drivers/xen/swiotlb-xen.c | 2 +- include/linux/swiotlb.h | 7 ++++--- kernel/dma/direct.c | 6 +++--- kernel/dma/direct.h | 6 +++--- 5 files changed, 17 insertions(+), 16 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 3087d9fa6065..10997ef541f8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -507,7 +507,7 @@ static void __iommu_dma_unmap_swiotlb(struct device *dev, dma_addr_t dma_addr,
__iommu_dma_unmap(dev, dma_addr, size);
- if (unlikely(is_swiotlb_buffer(phys)))
- if (unlikely(is_swiotlb_buffer(dev, phys))) swiotlb_tbl_unmap_single(dev, phys, size, dir, attrs);
}
@@ -578,7 +578,7 @@ static dma_addr_t __iommu_dma_map_swiotlb(struct device *dev, phys_addr_t phys, }
iova = __iommu_dma_map(dev, phys, aligned_size, prot, dma_mask);
- if (iova == DMA_MAPPING_ERROR && is_swiotlb_buffer(phys))
- if (iova == DMA_MAPPING_ERROR && is_swiotlb_buffer(dev, phys)) swiotlb_tbl_unmap_single(dev, phys, org_size, dir, attrs); return iova;
} @@ -749,7 +749,7 @@ static void iommu_dma_sync_single_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(phys, size, dir);
- if (is_swiotlb_buffer(phys))
- if (is_swiotlb_buffer(dev, phys)) swiotlb_sync_single_for_cpu(dev, phys, size, dir);
}
@@ -762,7 +762,7 @@ static void iommu_dma_sync_single_for_device(struct device *dev, return;
phys = iommu_iova_to_phys(iommu_get_dma_domain(dev), dma_handle);
- if (is_swiotlb_buffer(phys))
if (is_swiotlb_buffer(dev, phys)) swiotlb_sync_single_for_device(dev, phys, size, dir);
if (!dev_is_dma_coherent(dev))
@@ -783,7 +783,7 @@ static void iommu_dma_sync_sg_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(sg_phys(sg), sg->length, dir);
if (is_swiotlb_buffer(sg_phys(sg)))
if (is_swiotlb_buffer(dev, sg_phys(sg))) swiotlb_sync_single_for_cpu(dev, sg_phys(sg), sg->length, dir);@@ -800,7 +800,7 @@ static void iommu_dma_sync_sg_for_device(struct device *dev, return;
for_each_sg(sgl, sg, nelems, i) {
if (is_swiotlb_buffer(sg_phys(sg)))
if (is_swiotlb_buffer(dev, sg_phys(sg))) swiotlb_sync_single_for_device(dev, sg_phys(sg), sg->length, dir);diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 4c89afc0df62..0c6ed09f8513 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -100,7 +100,7 @@ static int is_xen_swiotlb_buffer(struct device *dev, dma_addr_t dma_addr) * in our domain. Therefore _only_ check address within our domain. */ if (pfn_valid(PFN_DOWN(paddr)))
return is_swiotlb_buffer(paddr);
return is_swiotlb_buffer(dev, paddr);}
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 216854a5e513..d1f3d95881cd 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -2,6 +2,7 @@ #ifndef __LINUX_SWIOTLB_H #define __LINUX_SWIOTLB_H
+#include <linux/device.h> #include <linux/dma-direction.h> #include <linux/init.h> #include <linux/types.h> @@ -101,9 +102,9 @@ struct io_tlb_mem { }; extern struct io_tlb_mem *io_tlb_default_mem;
-static inline bool is_swiotlb_buffer(phys_addr_t paddr) +static inline bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr) {
- struct io_tlb_mem *mem = io_tlb_default_mem;
struct io_tlb_mem *mem = dev->dma_io_tlb_mem;
return mem && paddr >= mem->start && paddr < mem->end;
} @@ -115,7 +116,7 @@ bool is_swiotlb_active(void); void __init swiotlb_adjust_size(unsigned long size); #else #define swiotlb_force SWIOTLB_NO_FORCE -static inline bool is_swiotlb_buffer(phys_addr_t paddr) +static inline bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr) { return false; } diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index f737e3347059..84c9feb5474a 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -343,7 +343,7 @@ void dma_direct_sync_sg_for_device(struct device *dev, for_each_sg(sgl, sg, nents, i) { phys_addr_t paddr = dma_to_phys(dev, sg_dma_address(sg));
if (unlikely(is_swiotlb_buffer(paddr)))
if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_sync_single_for_device(dev, paddr, sg->length, dir);@@ -369,7 +369,7 @@ void dma_direct_sync_sg_for_cpu(struct device *dev, if (!dev_is_dma_coherent(dev)) arch_sync_dma_for_cpu(paddr, sg->length, dir);
if (unlikely(is_swiotlb_buffer(paddr)))
if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_sync_single_for_cpu(dev, paddr, sg->length, dir);@@ -504,7 +504,7 @@ size_t dma_direct_max_mapping_size(struct device *dev) bool dma_direct_need_sync(struct device *dev, dma_addr_t dma_addr) { return !dev_is_dma_coherent(dev) ||
is_swiotlb_buffer(dma_to_phys(dev, dma_addr));
is_swiotlb_buffer(dev, dma_to_phys(dev, dma_addr));}
/** diff --git a/kernel/dma/direct.h b/kernel/dma/direct.h index 50afc05b6f1d..13e9e7158d94 100644 --- a/kernel/dma/direct.h +++ b/kernel/dma/direct.h @@ -56,7 +56,7 @@ static inline void dma_direct_sync_single_for_device(struct device *dev, { phys_addr_t paddr = dma_to_phys(dev, addr);
- if (unlikely(is_swiotlb_buffer(paddr)))
if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_sync_single_for_device(dev, paddr, size, dir);
if (!dev_is_dma_coherent(dev))
@@ -73,7 +73,7 @@ static inline void dma_direct_sync_single_for_cpu(struct device *dev, arch_sync_dma_for_cpu_all(); }
- if (unlikely(is_swiotlb_buffer(paddr)))
if (unlikely(is_swiotlb_buffer(dev, paddr))) swiotlb_sync_single_for_cpu(dev, paddr, size, dir);
if (dir == DMA_FROM_DEVICE)
@@ -113,7 +113,7 @@ static inline void dma_direct_unmap_page(struct device *dev, dma_addr_t addr, if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) dma_direct_sync_single_for_cpu(dev, addr, size, dir);
- if (unlikely(is_swiotlb_buffer(phys)))
- if (unlikely(is_swiotlb_buffer(dev, phys))) swiotlb_tbl_unmap_single(dev, phys, size, dir, attrs);
}
#endif /* _KERNEL_DMA_DIRECT_H */
2.32.0.288.g62a8d224e6-goog