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From:   Tom Murphy <tmurphy@arista.com>
To:     iommu@lists.linux-foundation.org
Cc:     murphyt7@tcd.ie, Tom Murphy <tmurphy@arista.com>,
        Joerg Roedel <joro@8bytes.org>,
        Will Deacon <will.deacon@arm.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Kukjin Kim <kgene@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        David Woodhouse <dwmw2@infradead.org>,
        Andy Gross <andy.gross@linaro.org>,
        David Brown <david.brown@linaro.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Rob Clark <robdclark@gmail.com>,
        Heiko Stuebner <heiko@sntech.de>,
        Gerald Schaefer <gerald.schaefer@de.ibm.com>,
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        Jonathan Hunter <jonathanh@nvidia.com>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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        linux-tegra@vger.kernel.org
Subject: [PATCH v2 3/4] iommu/dma-iommu: Use the dev->coherent_dma_mask
Date:   Tue, 30 Apr 2019 01:29:50 +0100
Message-Id: <20190430002952.18909-4-tmurphy@arista.com>
In-Reply-To: <20190430002952.18909-1-tmurphy@arista.com>
References: <20190430002952.18909-1-tmurphy@arista.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Use the dev->coherent_dma_mask when allocating in the dma-iommu ops api.

Signed-off-by: Tom Murphy <tmurphy@arista.com>
---
 drivers/iommu/dma-iommu.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index c18f74ad1e8b..df03104978d7 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -436,7 +436,8 @@ static void __iommu_dma_unmap(struct iommu_domain *domain, dma_addr_t dma_addr,
 }
 
 static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
-		size_t size, int prot, struct iommu_domain *domain)
+		size_t size, int prot, struct iommu_domain *domain,
+		dma_addr_t dma_limit)
 {
 	struct iommu_dma_cookie *cookie = domain->iova_cookie;
 	size_t iova_off = 0;
@@ -447,7 +448,7 @@ static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
 		size = iova_align(&cookie->iovad, size + iova_off);
 	}
 
-	iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev);
+	iova = iommu_dma_alloc_iova(domain, size, dma_limit, dev);
 	if (!iova)
 		return DMA_MAPPING_ERROR;
 
@@ -490,7 +491,7 @@ static void *iommu_dma_alloc_contiguous(struct device *dev, size_t size,
 		return NULL;
 
 	*dma_handle = __iommu_dma_map(dev, page_to_phys(page), size, ioprot,
-			iommu_get_dma_domain(dev));
+			iommu_get_dma_domain(dev), dev->coherent_dma_mask);
 	if (*dma_handle == DMA_MAPPING_ERROR) {
 		if (!dma_release_from_contiguous(dev, page, count))
 			__free_pages(page, page_order);
@@ -760,7 +761,7 @@ static void *iommu_dma_alloc_pool(struct device *dev, size_t size,
 
 	*dma_handle = __iommu_dma_map(dev, page_to_phys(page), size,
 			dma_info_to_prot(DMA_BIDIRECTIONAL, coherent, attrs),
-			iommu_get_domain_for_dev(dev));
+			iommu_get_domain_for_dev(dev), dev->coherent_dma_mask);
 	if (*dma_handle == DMA_MAPPING_ERROR) {
 		dma_free_from_pool(vaddr, PAGE_ALIGN(size));
 		return NULL;
@@ -850,7 +851,7 @@ static dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page,
 
 	dma_handle =__iommu_dma_map(dev, phys, size,
 			dma_info_to_prot(dir, coherent, attrs),
-			iommu_get_dma_domain(dev));
+			iommu_get_dma_domain(dev), dma_get_mask(dev));
 	if (!coherent && !(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
 	    dma_handle != DMA_MAPPING_ERROR)
 		arch_sync_dma_for_device(dev, phys, size, dir);
@@ -1065,7 +1066,7 @@ static dma_addr_t iommu_dma_map_resource(struct device *dev, phys_addr_t phys,
 
 	return __iommu_dma_map(dev, phys, size,
 			dma_info_to_prot(dir, false, attrs) | IOMMU_MMIO,
-			iommu_get_dma_domain(dev));
+			iommu_get_dma_domain(dev), dma_get_mask(dev));
 }
 
 static void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle,
@@ -1250,7 +1251,8 @@ static struct iommu_dma_msi_page *iommu_dma_get_msi_page(struct device *dev,
 	if (!msi_page)
 		return NULL;
 
-	iova = __iommu_dma_map(dev, msi_addr, size, prot, domain);
+	iova = __iommu_dma_map(dev, msi_addr, size, prot, domain,
+			dma_get_mask(dev));
 	if (iova == DMA_MAPPING_ERROR)
 		goto out_free_page;
 
-- 
2.17.1