linux-kernel - [RFC 10/13] iommu/arm-smmu-impl: Get rid of Marvell's implementation details

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Message-Id: <20210226140305.26356-11-nsaenzjulienne@suse.de>
Date:   Fri, 26 Feb 2021 15:03:02 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     f.fainelli@...il.com, robh+dt@...nel.org, robin.murphy@....com,
        ardb@...nel.org, hch@...radead.org, narmstrong@...libre.com,
        dwmw2@...radead.org, linux@...linux.org.uk,
        catalin.marinas@....com, arnd@...db.de, will@...nel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Subject: [RFC 10/13] iommu/arm-smmu-impl: Get rid of Marvell's implementation details

arm-smmu can now deal with integrations on buses that don't support
64bit MMIO accesses. No need to create a special case for that on
Marvell's integration.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
 drivers/iommu/arm/arm-smmu/arm-smmu-impl.c | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c b/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
index 136872e77195..55d40e37e144 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-impl.c
@@ -145,25 +145,6 @@ static const struct arm_smmu_impl arm_mmu500_impl = {
 	.reset = arm_mmu500_reset,
 };
 
-static u64 mrvl_mmu500_readq(struct arm_smmu_device *smmu, int page, int off)
-{
-	/*
-	 * Marvell Armada-AP806 erratum #582743.
-	 * Split all the readq to double readl
-	 */
-	return hi_lo_readq_relaxed(arm_smmu_page(smmu, page) + off);
-}
-
-static void mrvl_mmu500_writeq(struct arm_smmu_device *smmu, int page, int off,
-			       u64 val)
-{
-	/*
-	 * Marvell Armada-AP806 erratum #582743.
-	 * Split all the writeq to double writel
-	 */
-	hi_lo_writeq_relaxed(val, arm_smmu_page(smmu, page) + off);
-}
-
 static int mrvl_mmu500_cfg_probe(struct arm_smmu_device *smmu)
 {
 
@@ -181,8 +162,6 @@ static int mrvl_mmu500_cfg_probe(struct arm_smmu_device *smmu)
 }
 
 static const struct arm_smmu_impl mrvl_mmu500_impl = {
-	.read_reg64 = mrvl_mmu500_readq,
-	.write_reg64 = mrvl_mmu500_writeq,
 	.cfg_probe = mrvl_mmu500_cfg_probe,
 	.reset = arm_mmu500_reset,
 };
-- 
2.30.1