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authorChristoph Hellwig <hch@lst.de>2019-05-20 09:29:30 +0200
committerJoerg Roedel <jroedel@suse.de>2019-05-27 17:31:11 +0200
commit92aec09cc87975f66d3a84001876693d9ac6073b (patch)
tree4f548ff4d682ae217b9dbfce06dfffc9032a21ac /drivers
parentiommu/dma: move the arm64 wrappers to common code (diff)
downloadlinux-92aec09cc87975f66d3a84001876693d9ac6073b.tar.xz
linux-92aec09cc87975f66d3a84001876693d9ac6073b.zip
iommu/dma: Move __iommu_dma_map
Moving this function up to its unmap counterpart helps to keep related code together for the following changes. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/iommu/dma-iommu.c46
1 files changed, 23 insertions, 23 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index e34ba23353cb..c406abe3be01 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -464,6 +464,29 @@ static void __iommu_dma_unmap(struct iommu_domain *domain, dma_addr_t dma_addr,
iommu_dma_free_iova(cookie, dma_addr, size);
}
+static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
+ size_t size, int prot, struct iommu_domain *domain)
+{
+ struct iommu_dma_cookie *cookie = domain->iova_cookie;
+ size_t iova_off = 0;
+ dma_addr_t iova;
+
+ if (cookie->type == IOMMU_DMA_IOVA_COOKIE) {
+ iova_off = iova_offset(&cookie->iovad, phys);
+ size = iova_align(&cookie->iovad, size + iova_off);
+ }
+
+ iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev);
+ if (!iova)
+ return DMA_MAPPING_ERROR;
+
+ if (iommu_map(domain, iova, phys - iova_off, size, prot)) {
+ iommu_dma_free_iova(cookie, iova, size);
+ return DMA_MAPPING_ERROR;
+ }
+ return iova + iova_off;
+}
+
static void __iommu_dma_free_pages(struct page **pages, int count)
{
while (count--)
@@ -692,29 +715,6 @@ static void iommu_dma_sync_sg_for_device(struct device *dev,
arch_sync_dma_for_device(dev, sg_phys(sg), sg->length, dir);
}
-static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
- size_t size, int prot, struct iommu_domain *domain)
-{
- struct iommu_dma_cookie *cookie = domain->iova_cookie;
- size_t iova_off = 0;
- dma_addr_t iova;
-
- if (cookie->type == IOMMU_DMA_IOVA_COOKIE) {
- iova_off = iova_offset(&cookie->iovad, phys);
- size = iova_align(&cookie->iovad, size + iova_off);
- }
-
- iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev);
- if (!iova)
- return DMA_MAPPING_ERROR;
-
- if (iommu_map(domain, iova, phys - iova_off, size, prot)) {
- iommu_dma_free_iova(cookie, iova, size);
- return DMA_MAPPING_ERROR;
- }
- return iova + iova_off;
-}
-
static dma_addr_t __iommu_dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, int prot)
{