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From: Robin Murphy <robin.murphy@arm.com>
To: joro@8bytes.org, will@kernel.org
Cc: linux-kernel@vger.kernel.org, dianders@chromium.org,
	iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 16/23] iommu/arm-smmu: Prepare for multiple DMA domain types
Date: Wed, 21 Jul 2021 19:20:27 +0100	[thread overview]
Message-ID: <04220b3420c2c513490450f37de109182364f235.1626888445.git.robin.murphy@arm.com> (raw)
In-Reply-To: <cover.1626888444.git.robin.murphy@arm.com>

In preparation for the strict vs. non-strict decision for DMA domains to
be expressed in the domain type, make sure we expose our flush queue
awareness by accepting the new domain type, and test the specific
feature flag where we want to identify DMA domains in general.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
 drivers/iommu/arm/arm-smmu/arm-smmu.c       | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 039f371d2f8b..fa41026d272e 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -1972,6 +1972,7 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type)
 
 	if (type != IOMMU_DOMAIN_UNMANAGED &&
 	    type != IOMMU_DOMAIN_DMA &&
+	    type != IOMMU_DOMAIN_DMA_FQ &&
 	    type != IOMMU_DOMAIN_IDENTITY)
 		return NULL;
 
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 354be8f4c0ef..dbc14c265b15 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -870,10 +870,11 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type)
 
 	if (type != IOMMU_DOMAIN_UNMANAGED &&
 	    type != IOMMU_DOMAIN_DMA &&
+	    type != IOMMU_DOMAIN_DMA_FQ &&
 	    type != IOMMU_DOMAIN_IDENTITY)
 		return NULL;
 
-	if (type == IOMMU_DOMAIN_DMA && using_legacy_binding)
+	if ((type & __IOMMU_DOMAIN_DMA_API) && using_legacy_binding)
 		return NULL;
 	/*
 	 * Allocate the domain and initialise some of its data structures.
-- 
2.25.1

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  parent reply	other threads:[~2021-07-21 18:21 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21 18:20 [PATCH 00/23] iommu: Refactor DMA domain strictness Robin Murphy
2021-07-21 18:20 ` [PATCH 01/23] iommu: Pull IOVA cookie management into the core Robin Murphy
2021-07-21 18:20 ` [PATCH 02/23] iommu/amd: Drop IOVA cookie management Robin Murphy
2021-07-21 18:20 ` [PATCH 03/23] iommu/arm-smmu: " Robin Murphy
2021-07-21 18:20 ` [PATCH 04/23] iommu/vt-d: " Robin Murphy
2021-07-21 18:20 ` [PATCH 05/23] iommu/exynos: " Robin Murphy
2021-07-21 18:20 ` [PATCH 06/23] iommu/ipmmu-vmsa: " Robin Murphy
2021-07-21 18:20 ` [PATCH 07/23] iommu/mtk: " Robin Murphy
2021-07-21 18:20 ` [PATCH 08/23] iommu/rockchip: " Robin Murphy
2021-07-21 18:20 ` [PATCH 09/23] iommu/sprd: " Robin Murphy
2021-07-21 18:20 ` [PATCH 10/23] iommu/sun50i: " Robin Murphy
2021-07-21 18:20 ` [PATCH 11/23] iommu/virtio: " Robin Murphy
2021-07-21 18:20 ` [PATCH 12/23] iommu/dma: Unexport " Robin Murphy
2021-07-21 18:20 ` [PATCH 13/23] iommu/dma: Remove redundant "!dev" checks Robin Murphy
2021-07-26  8:28   ` John Garry
2021-07-21 18:20 ` [PATCH 14/23] iommu: Introduce explicit type for non-strict DMA domains Robin Murphy
2021-07-21 18:20 ` [PATCH 15/23] iommu/amd: Prepare for multiple DMA domain types Robin Murphy
2021-07-21 18:20 ` Robin Murphy [this message]
2021-07-26 12:46   ` [PATCH 16/23] iommu/arm-smmu: " Joerg Roedel
2021-07-26 13:09     ` Robin Murphy
2021-07-26 18:43       ` Joerg Roedel
2021-07-21 18:20 ` [PATCH 17/23] iommu/vt-d: " Robin Murphy
2021-07-22 16:44   ` kernel test robot
2021-07-22 17:30     ` Robin Murphy
2021-07-22 18:44   ` kernel test robot
2021-07-24  5:23   ` Lu Baolu
2021-07-26  8:30     ` Robin Murphy
2021-07-21 18:20 ` [PATCH 18/23] iommu: Express DMA strictness via the domain type Robin Murphy
2021-07-24  5:29   ` Lu Baolu
2021-07-26  8:27     ` Robin Murphy
2021-07-26 11:31       ` Lu Baolu
2021-07-26 12:29       ` Lu Baolu
2021-07-26 12:43         ` Robin Murphy
2021-07-21 18:20 ` [PATCH 19/23] iommu: Expose DMA domain strictness via sysfs Robin Murphy
2021-07-21 18:20 ` [PATCH 20/23] iommu: Allow choosing DMA strictness at build time Robin Murphy
2021-07-21 18:20 ` [PATCH 21/23] iommu/dma: Factor out flush queue init Robin Murphy
2021-07-21 18:20 ` [PATCH 22/23] iommu: Allow enabling non-strict mode dynamically Robin Murphy
2021-07-21 18:20 ` [PATCH 23/23] iommu/arm-smmu: Allow non-strict in pgtable_quirks interface Robin Murphy
2021-07-26  8:13 ` [PATCH 00/23] iommu: Refactor DMA domain strictness John Garry
2021-07-26 12:06   ` Robin Murphy
2021-07-26 13:02 ` Joerg Roedel

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