linux-kernel - [PATCH v2 08/10] iommu/tegra-smmu: use page allocation function provided by iommu-pages.h

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Message-ID: <20231130201504.2322355-9-pasha.tatashin@soleen.com>
Date:   Thu, 30 Nov 2023 20:15:02 +0000
From:   Pasha Tatashin <pasha.tatashin@...een.com>
To:     akpm@...ux-foundation.org, alim.akhtar@...sung.com,
        alyssa@...enzweig.io, asahi@...ts.linux.dev,
        baolu.lu@...ux.intel.com, bhelgaas@...gle.com,
        cgroups@...r.kernel.org, corbet@....net, david@...hat.com,
        dwmw2@...radead.org, hannes@...xchg.org, heiko@...ech.de,
        iommu@...ts.linux.dev, jernej.skrabec@...il.com,
        jonathanh@...dia.com, joro@...tes.org,
        krzysztof.kozlowski@...aro.org, linux-doc@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-rockchip@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-sunxi@...ts.linux.dev,
        linux-tegra@...r.kernel.org, lizefan.x@...edance.com,
        marcan@...can.st, mhiramat@...nel.org, m.szyprowski@...sung.com,
        pasha.tatashin@...een.com, paulmck@...nel.org,
        rdunlap@...radead.org, robin.murphy@....com, samuel@...lland.org,
        suravee.suthikulpanit@....com, sven@...npeter.dev,
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        yu-cheng.yu@...el.com
Subject: [PATCH v2 08/10] iommu/tegra-smmu: use page allocation function provided by iommu-pages.h

Convert iommu/tegra-smmu.c to use the new page allocation functions
provided in iommu-pages.h.

Signed-off-by: Pasha Tatashin <pasha.tatashin@...een.com>
---
 drivers/iommu/tegra-smmu.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 310871728ab4..5e0730dc1b0e 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -19,6 +19,8 @@
 #include <soc/tegra/ahb.h>
 #include <soc/tegra/mc.h>
 
+#include "iommu-pages.h"
+
 struct tegra_smmu_group {
 	struct list_head list;
 	struct tegra_smmu *smmu;
@@ -282,7 +284,7 @@ static struct iommu_domain *tegra_smmu_domain_alloc_paging(struct device *dev)
 
 	as->attr = SMMU_PD_READABLE | SMMU_PD_WRITABLE | SMMU_PD_NONSECURE;
 
-	as->pd = alloc_page(GFP_KERNEL | __GFP_DMA | __GFP_ZERO);
+	as->pd = __iommu_alloc_page(GFP_KERNEL | __GFP_DMA);
 	if (!as->pd) {
 		kfree(as);
 		return NULL;
@@ -290,7 +292,7 @@ static struct iommu_domain *tegra_smmu_domain_alloc_paging(struct device *dev)
 
 	as->count = kcalloc(SMMU_NUM_PDE, sizeof(u32), GFP_KERNEL);
 	if (!as->count) {
-		__free_page(as->pd);
+		__iommu_free_page(as->pd);
 		kfree(as);
 		return NULL;
 	}
@@ -298,7 +300,7 @@ static struct iommu_domain *tegra_smmu_domain_alloc_paging(struct device *dev)
 	as->pts = kcalloc(SMMU_NUM_PDE, sizeof(*as->pts), GFP_KERNEL);
 	if (!as->pts) {
 		kfree(as->count);
-		__free_page(as->pd);
+		__iommu_free_page(as->pd);
 		kfree(as);
 		return NULL;
 	}
@@ -599,14 +601,14 @@ static u32 *as_get_pte(struct tegra_smmu_as *as, dma_addr_t iova,
 		dma = dma_map_page(smmu->dev, page, 0, SMMU_SIZE_PT,
 				   DMA_TO_DEVICE);
 		if (dma_mapping_error(smmu->dev, dma)) {
-			__free_page(page);
+			__iommu_free_page(page);
 			return NULL;
 		}
 
 		if (!smmu_dma_addr_valid(smmu, dma)) {
 			dma_unmap_page(smmu->dev, dma, SMMU_SIZE_PT,
 				       DMA_TO_DEVICE);
-			__free_page(page);
+			__iommu_free_page(page);
 			return NULL;
 		}
 
@@ -649,7 +651,7 @@ static void tegra_smmu_pte_put_use(struct tegra_smmu_as *as, unsigned long iova)
 		tegra_smmu_set_pde(as, iova, 0);
 
 		dma_unmap_page(smmu->dev, pte_dma, SMMU_SIZE_PT, DMA_TO_DEVICE);
-		__free_page(page);
+		__iommu_free_page(page);
 		as->pts[pde] = NULL;
 	}
 }
@@ -688,7 +690,7 @@ static struct page *as_get_pde_page(struct tegra_smmu_as *as,
 	if (gfpflags_allow_blocking(gfp))
 		spin_unlock_irqrestore(&as->lock, *flags);
 
-	page = alloc_page(gfp | __GFP_DMA | __GFP_ZERO);
+	page = __iommu_alloc_page(gfp | __GFP_DMA);
 
 	if (gfpflags_allow_blocking(gfp))
 		spin_lock_irqsave(&as->lock, *flags);
@@ -700,7 +702,7 @@ static struct page *as_get_pde_page(struct tegra_smmu_as *as,
 	 */
 	if (as->pts[pde]) {
 		if (page)
-			__free_page(page);
+			__iommu_free_page(page);
 
 		page = as->pts[pde];
 	}
-- 
2.43.0.rc2.451.g8631bc7472-goog