From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: joro@8bytes.org, will@kernel.org, lorenzo.pieralisi@arm.com,
robh+dt@kernel.org
Cc: guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net,
lenb@kernel.org, robin.murphy@arm.com, bhelgaas@google.com,
Jonathan.Cameron@huawei.com, eric.auger@redhat.com,
iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-pci@vger.kernel.org, baolu.lu@linux.intel.com,
zhangfei.gao@linaro.org, shameerali.kolothum.thodi@huawei.com,
vivek.gautam@arm.com,
Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: [PATCH v8 4/9] of/iommu: Support dma-can-stall property
Date: Thu, 12 Nov 2020 13:55:16 +0100 [thread overview]
Message-ID: <20201112125519.3987595-5-jean-philippe@linaro.org> (raw)
In-Reply-To: <20201112125519.3987595-1-jean-philippe@linaro.org>
Copy the dma-can-stall property into the fwspec structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
include/linux/iommu.h | 2 ++
drivers/iommu/of_iommu.c | 5 ++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index a1c78c4cdeb1..9076fb592c8f 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -572,6 +572,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev);
* @iommu_fwnode: firmware handle for this device's IOMMU
* @iommu_priv: IOMMU driver private data for this device
* @num_pasid_bits: number of PASID bits supported by this device
+ * @can_stall: the device is allowed to stall
* @num_ids: number of associated device IDs
* @ids: IDs which this device may present to the IOMMU
*/
@@ -579,6 +580,7 @@ struct iommu_fwspec {
const struct iommu_ops *ops;
struct fwnode_handle *iommu_fwnode;
u32 num_pasid_bits;
+ bool can_stall;
unsigned int num_ids;
u32 ids[];
};
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index e505b9130a1c..d6255ca823d8 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -212,9 +212,12 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
err = of_iommu_configure_device(master_np, dev, id);
fwspec = dev_iommu_fwspec_get(dev);
- if (!err && fwspec)
+ if (!err && fwspec) {
of_property_read_u32(master_np, "pasid-num-bits",
&fwspec->num_pasid_bits);
+ fwspec->can_stall = of_property_read_bool(master_np,
+ "dma-can-stall");
+ }
}
/*
--
2.29.1
WARNING: multiple messages have this Message-ID (diff)
From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: joro@8bytes.org, will@kernel.org, lorenzo.pieralisi@arm.com,
robh+dt@kernel.org
Cc: devicetree@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-pci@vger.kernel.org, guohanjun@huawei.com,
rjw@rjwysocki.net, iommu@lists.linux-foundation.org,
sudeep.holla@arm.com, bhelgaas@google.com,
zhangfei.gao@linaro.org, vivek.gautam@arm.com,
robin.murphy@arm.com,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
linux-arm-kernel@lists.infradead.org, lenb@kernel.org
Subject: [PATCH v8 4/9] of/iommu: Support dma-can-stall property
Date: Thu, 12 Nov 2020 13:55:16 +0100 [thread overview]
Message-ID: <20201112125519.3987595-5-jean-philippe@linaro.org> (raw)
In-Reply-To: <20201112125519.3987595-1-jean-philippe@linaro.org>
Copy the dma-can-stall property into the fwspec structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
include/linux/iommu.h | 2 ++
drivers/iommu/of_iommu.c | 5 ++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index a1c78c4cdeb1..9076fb592c8f 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -572,6 +572,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev);
* @iommu_fwnode: firmware handle for this device's IOMMU
* @iommu_priv: IOMMU driver private data for this device
* @num_pasid_bits: number of PASID bits supported by this device
+ * @can_stall: the device is allowed to stall
* @num_ids: number of associated device IDs
* @ids: IDs which this device may present to the IOMMU
*/
@@ -579,6 +580,7 @@ struct iommu_fwspec {
const struct iommu_ops *ops;
struct fwnode_handle *iommu_fwnode;
u32 num_pasid_bits;
+ bool can_stall;
unsigned int num_ids;
u32 ids[];
};
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index e505b9130a1c..d6255ca823d8 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -212,9 +212,12 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
err = of_iommu_configure_device(master_np, dev, id);
fwspec = dev_iommu_fwspec_get(dev);
- if (!err && fwspec)
+ if (!err && fwspec) {
of_property_read_u32(master_np, "pasid-num-bits",
&fwspec->num_pasid_bits);
+ fwspec->can_stall = of_property_read_bool(master_np,
+ "dma-can-stall");
+ }
}
/*
--
2.29.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: joro@8bytes.org, will@kernel.org, lorenzo.pieralisi@arm.com,
robh+dt@kernel.org
Cc: devicetree@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-pci@vger.kernel.org, guohanjun@huawei.com,
rjw@rjwysocki.net, shameerali.kolothum.thodi@huawei.com,
eric.auger@redhat.com, iommu@lists.linux-foundation.org,
Jonathan.Cameron@huawei.com, sudeep.holla@arm.com,
bhelgaas@google.com, zhangfei.gao@linaro.org,
vivek.gautam@arm.com, baolu.lu@linux.intel.com,
robin.murphy@arm.com,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
linux-arm-kernel@lists.infradead.org, lenb@kernel.org
Subject: [PATCH v8 4/9] of/iommu: Support dma-can-stall property
Date: Thu, 12 Nov 2020 13:55:16 +0100 [thread overview]
Message-ID: <20201112125519.3987595-5-jean-philippe@linaro.org> (raw)
In-Reply-To: <20201112125519.3987595-1-jean-philippe@linaro.org>
Copy the dma-can-stall property into the fwspec structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
include/linux/iommu.h | 2 ++
drivers/iommu/of_iommu.c | 5 ++++-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index a1c78c4cdeb1..9076fb592c8f 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -572,6 +572,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev);
* @iommu_fwnode: firmware handle for this device's IOMMU
* @iommu_priv: IOMMU driver private data for this device
* @num_pasid_bits: number of PASID bits supported by this device
+ * @can_stall: the device is allowed to stall
* @num_ids: number of associated device IDs
* @ids: IDs which this device may present to the IOMMU
*/
@@ -579,6 +580,7 @@ struct iommu_fwspec {
const struct iommu_ops *ops;
struct fwnode_handle *iommu_fwnode;
u32 num_pasid_bits;
+ bool can_stall;
unsigned int num_ids;
u32 ids[];
};
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index e505b9130a1c..d6255ca823d8 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -212,9 +212,12 @@ const struct iommu_ops *of_iommu_configure(struct device *dev,
err = of_iommu_configure_device(master_np, dev, id);
fwspec = dev_iommu_fwspec_get(dev);
- if (!err && fwspec)
+ if (!err && fwspec) {
of_property_read_u32(master_np, "pasid-num-bits",
&fwspec->num_pasid_bits);
+ fwspec->can_stall = of_property_read_bool(master_np,
+ "dma-can-stall");
+ }
}
/*
--
2.29.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-12 13:03 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-12 12:55 [PATCH v8 0/9] iommu: I/O page faults for SMMUv3 Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 1/9] iommu: Add a page fault handler Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 2/9] iommu/arm-smmu-v3: Maintain a SID->device structure Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 3/9] dt-bindings: document stall property for IOMMU masters Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker [this message]
2020-11-12 12:55 ` [PATCH v8 4/9] of/iommu: Support dma-can-stall property Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-26 18:09 ` Robin Murphy
2020-11-26 18:09 ` Robin Murphy
2020-11-26 18:09 ` Robin Murphy
2020-12-14 12:51 ` Jean-Philippe Brucker
2020-12-14 12:51 ` Jean-Philippe Brucker
2020-12-14 12:51 ` Jean-Philippe Brucker
2020-12-18 6:47 ` Zhangfei Gao
2020-12-18 6:47 ` Zhangfei Gao
2020-12-18 6:47 ` Zhangfei Gao
2020-11-12 12:55 ` [PATCH v8 5/9] ACPI/IORT: Enable stall support for platform devices Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-13 0:41 ` Hanjun Guo
2020-11-13 0:41 ` Hanjun Guo
2020-11-13 0:41 ` Hanjun Guo
2020-11-12 12:55 ` [PATCH v8 6/9] iommu/arm-smmu-v3: Add " Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 7/9] PCI/ATS: Add PRI stubs Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 8/9] PCI/ATS: Export PRI functions Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` [PATCH v8 9/9] iommu/arm-smmu-v3: Add support for PRI Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-11-12 12:55 ` Jean-Philippe Brucker
2020-12-03 6:52 ` [PATCH v8 0/9] iommu: I/O page faults for SMMUv3 Vivek Gautam
2020-12-03 6:52 ` Vivek Gautam
2020-12-03 6:52 ` Vivek Gautam
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