[PATCH v15 04/12] swiotlb: Update is_swiotlb_buffer to add a struct device argument

[Claire Chang <tientzu@xxxxxxxxxxxx>]

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@xxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Tested-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Tested-by: Will Deacon <will@xxxxxxxxxx>
Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 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);
        return 0;
 }
 
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