From: Yisheng Xie <xieyisheng1@huawei.com>
To: <jean-philippe.brucker@arm.com>
Cc: <joro@8bytes.org>, <robh+dt@kernel.org>, <mark.rutland@arm.com>,
<lorenzo.pieralisi@arm.com>, <hanjun.guo@linaro.org>,
<sudeep.holla@arm.com>, <rjw@rjwysocki.net>, <lenb@kernel.org>,
<will.deacon@arm.com>, <robin.murphy@arm.com>,
<robert.moore@intel.com>, <lv.zheng@intel.com>,
<iommu@lists.linux-foundation.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <devel@acpica.org>,
<liubo95@huawei.com>, <chenjiankang1@huawei.com>,
<xieyisheng@huawei.com>
Subject: [RFC PATCH 2/6] iommu/of: Add stall and pasid properties to iommu_fwspec
Date: Thu, 31 Aug 2017 16:20:38 +0800 [thread overview]
Message-ID: <1504167642-14922-3-git-send-email-xieyisheng1@huawei.com> (raw)
In-Reply-To: <1504167642-14922-1-git-send-email-xieyisheng1@huawei.com>
From: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Add stall and pasid properties to iommu_fwspec.
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
---
drivers/iommu/of_iommu.c | 11 +++++++++++
include/linux/iommu.h | 2 ++
2 files changed, 12 insertions(+)
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index 84fa6b4..b926276 100644
--- a/drivers/iommu/of_iommu.c
+++ b/drivers/iommu/of_iommu.c
@@ -209,6 +209,16 @@ static bool of_pci_rc_supports_ats(struct device_node *rc_node)
break;
}
+ if (dev->iommu_fwspec) {
+ const __be32 *prop;
+
+ if (of_get_property(np, "dma-can-stall", NULL))
+ dev->iommu_fwspec->can_stall = true;
+
+ prop = of_get_property(np, "pasid-bits", NULL);
+ if (prop)
+ dev->iommu_fwspec->num_pasid_bits = be32_to_cpu(*prop);
+ }
+
return ops;
}
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 1c5a216..5f580de 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -387,6 +387,8 @@ struct iommu_fwspec {
void *iommu_priv;
u32 flags;
unsigned int num_ids;
+ unsigned long num_pasid_bits;
+ bool can_stall;
u32 ids[1];
};
--
1.7.12.4
next prev parent reply other threads:[~2017-08-31 8:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-31 8:20 [RFC PATCH 0/6] Add platform device SVM support for ARM SMMUv3 Yisheng Xie
2017-08-31 8:20 ` [RFC PATCH 1/6] dt-bindings: document stall and PASID properties for IOMMU masters Yisheng Xie
2017-09-05 12:52 ` Jean-Philippe Brucker
2017-08-31 8:20 ` Yisheng Xie [this message]
2017-09-05 12:52 ` [RFC PATCH 2/6] iommu/of: Add stall and pasid properties to iommu_fwspec Jean-Philippe Brucker
2017-08-31 8:20 ` [RFC PATCH 3/6] ACPI: IORT: " Yisheng Xie
2017-08-31 8:20 ` [RFC PATCH 4/6] iommu/arm-smmu-v3: Add SVM support for platform devices Yisheng Xie
2017-09-05 12:53 ` Jean-Philippe Brucker
2017-09-06 0:51 ` Bob Liu
2017-09-06 1:20 ` Yisheng Xie
2017-08-31 8:20 ` [RFC PATCH 5/6] iommu/arm-smmu-v3: fix panic when handle stall mode irq Yisheng Xie
2017-09-05 12:53 ` Jean-Philippe Brucker
2017-08-31 8:20 ` [RFC PATCH 6/6] iommu/arm-smmu-v3: Avoid ILLEGAL setting of STE.S1STALLD and CD.S Yisheng Xie
2017-09-05 12:54 ` Jean-Philippe Brucker
2017-09-06 2:23 ` Yisheng Xie
2017-09-13 3:06 ` Will Deacon
2017-09-13 10:11 ` Yisheng Xie
2017-09-13 15:47 ` Jean-Philippe Brucker
2017-09-13 17:11 ` Will Deacon
2017-09-05 12:56 ` [RFC PATCH 0/6] Add platform device SVM support for ARM SMMUv3 Jean-Philippe Brucker
2017-09-06 1:02 ` Bob Liu
2017-09-06 9:57 ` Jean-Philippe Brucker
2017-09-07 1:41 ` Bob Liu
2017-09-07 16:32 ` Jean-Philippe Brucker
2017-09-13 1:11 ` Bob Liu
2017-09-06 1:16 ` Yisheng Xie
2017-09-06 9:59 ` Jean-Philippe Brucker
2017-09-07 1:55 ` Bob Liu
2017-09-07 16:30 ` Jean-Philippe Brucker
2017-09-06 1:24 ` Hanjun Guo
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