From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-acpi@vger.kernel.org, devicetree@vger.kernel.org,
iommu@lists.linux-foundation.org
Cc: mark.rutland@arm.com, lorenzo.pieralisi@arm.com,
robin.murphy@arm.com, joro@8bytes.org, guohanjun@huawei.com,
rjw@rjwysocki.net, eric.auger@redhat.com, robh+dt@kernel.org,
jonathan.cameron@huawei.com, sudeep.holla@arm.com,
bhelgaas@google.com, zhangfei.gao@linaro.org, will@kernel.org,
lenb@kernel.org
Subject: [PATCH v4 12/13] PCI/ATS: Add PASID stubs
Date: Thu, 19 Dec 2019 17:30:32 +0100 [thread overview]
Message-ID: <20191219163033.2608177-13-jean-philippe@linaro.org> (raw)
In-Reply-To: <20191219163033.2608177-1-jean-philippe@linaro.org>
The SMMUv3 driver, which may be built without CONFIG_PCI, will soon gain
PASID support. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove
unused PRI and PASID stubs") to re-introduce the PASID stubs, and avoid
adding more #ifdefs to the SMMU driver.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
include/linux/pci-ats.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h
index 5d62e78946a3..d08f0869f121 100644
--- a/include/linux/pci-ats.h
+++ b/include/linux/pci-ats.h
@@ -33,6 +33,9 @@ void pci_disable_pasid(struct pci_dev *pdev);
int pci_pasid_features(struct pci_dev *pdev);
int pci_max_pasids(struct pci_dev *pdev);
#else /* CONFIG_PCI_PASID */
+static inline int pci_enable_pasid(struct pci_dev *pdev, int features)
+{ return -EINVAL; }
+static inline void pci_disable_pasid(struct pci_dev *pdev) { }
static inline int pci_pasid_features(struct pci_dev *pdev)
{ return -EINVAL; }
static inline int pci_max_pasids(struct pci_dev *pdev)
--
2.24.1
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next prev parent reply other threads:[~2019-12-19 16:34 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-19 16:30 [PATCH v4 00/13] iommu: Add PASID support to Arm SMMUv3 Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 01/13] iommu/arm-smmu-v3: Drop __GFP_ZERO flag from DMA allocation Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 02/13] dt-bindings: document PASID property for IOMMU masters Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 03/13] iommu/arm-smmu-v3: Parse PASID devicetree property of platform devices Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 04/13] ACPI/IORT: Parse SSID property of named component node Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 05/13] iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 06/13] iommu/arm-smmu-v3: Add context descriptor tables allocators Jean-Philippe Brucker
2020-01-14 11:06 ` Will Deacon
2020-01-14 11:52 ` Jean-Philippe Brucker
2020-01-14 11:56 ` Will Deacon
2019-12-19 16:30 ` [PATCH v4 07/13] iommu/arm-smmu-v3: Add support for Substream IDs Jean-Philippe Brucker
2020-01-14 12:38 ` Will Deacon
2020-01-14 16:30 ` Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 08/13] iommu/arm-smmu-v3: Propagate ssid_bits Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 09/13] iommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure Jean-Philippe Brucker
2020-01-14 12:42 ` Will Deacon
2020-01-14 16:31 ` Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 10/13] iommu/arm-smmu-v3: Add second level of context descriptor table Jean-Philippe Brucker
2019-12-20 7:37 ` Auger Eric
2020-01-14 15:04 ` Will Deacon
2020-01-15 9:45 ` Jean-Philippe Brucker
2019-12-19 16:30 ` [PATCH v4 11/13] iommu/arm-smmu-v3: Improve add_device() error handling Jean-Philippe Brucker
2020-01-14 15:25 ` Will Deacon
2020-01-15 16:17 ` Will Deacon
2020-01-15 17:44 ` Robin Murphy
2019-12-19 16:30 ` Jean-Philippe Brucker [this message]
2019-12-19 16:30 ` [PATCH v4 13/13] iommu/arm-smmu-v3: Add support for PCI PASID Jean-Philippe Brucker
2019-12-20 7:37 ` Auger Eric
2020-01-14 12:45 ` Will Deacon
2020-01-15 7:57 ` Jean-Philippe Brucker
2020-01-09 14:36 ` [PATCH v4 00/13] iommu: Add PASID support to Arm SMMUv3 Jean-Philippe Brucker
2020-01-09 14:41 ` Will Deacon
2020-01-10 7:15 ` Jean-Philippe Brucker
2020-01-14 15:40 ` Will Deacon
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