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| author | Christoph Hellwig <hch@lst.de> | 2019-05-20 09:29:30 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-05-27 17:31:11 +0200 |
| commit | 92aec09cc87975f66d3a84001876693d9ac6073b (patch) | |
| tree | 4f548ff4d682ae217b9dbfce06dfffc9032a21ac /drivers/iommu | |
| parent | 06d60728ff5c01795ac0bad66a5c42e3e78dcb6b (diff) | |
| download | linux-92aec09cc87975f66d3a84001876693d9ac6073b.tar.gz linux-92aec09cc87975f66d3a84001876693d9ac6073b.tar.bz2 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/iommu')
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 46 |
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) { |