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From: John Garry <john.garry@huawei.com>
To: <joro@8bytes.org>, <will@kernel.org>, <robin.murphy@arm.com>,
	<hch@lst.de>, <m.szyprowski@samsung.com>
Cc: <iommu@lists.linux-foundation.org>, <baolu.lu@linux.intel.com>,
	<linux-kernel@vger.kernel.org>, <linux-scsi@vger.kernel.org>,
	<linuxarm@huawei.com>, <sai.praneeth.prakhya@intel.com>,
	John Garry <john.garry@huawei.com>
Subject: [PATCH v2 07/15] iommu: Add iommu_realloc_dev_group()
Date: Mon, 10 May 2021 22:17:21 +0800	[thread overview]
Message-ID: <1620656249-68890-8-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1620656249-68890-1-git-send-email-john.garry@huawei.com>

Add a function to re-alloc IOMMU group default domain.

Signed-off-by: John Garry <john.garry@huawei.com>
---
 drivers/iommu/iommu.c | 12 ++++++++++++
 include/linux/iommu.h |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index f7253a973ab9..bdb9aa47dfca 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -3191,6 +3191,18 @@ static int iommu_change_dev_def_domain(struct iommu_group *group,
 	return ret;
 }
 
+int iommu_realloc_dev_group(struct device *dev)
+{
+	struct iommu_group *group;
+	int ret;
+
+	group = iommu_group_get(dev);
+	ret = iommu_change_dev_def_domain(group, dev, 0, true);
+	iommu_group_put(group);
+
+	return ret;
+}
+
 /*
  * Changing the default domain or any other IOMMU group attribute through sysfs
  * requires the users to unbind the drivers from the devices in the IOMMU group.
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index e26abda94792..6e187746af0f 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -482,6 +482,7 @@ bool iommu_get_dma_strict(struct iommu_domain *domain);
 
 extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
 			      unsigned long iova, int flags);
+extern int iommu_realloc_dev_group(struct device *dev);
 
 static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
@@ -699,6 +700,11 @@ static inline size_t iommu_map_sg_atomic(struct iommu_domain *domain,
 	return 0;
 }
 
+static inline int iommu_realloc_dev_group(struct device *dev)
+{
+	return -ENODEV;
+}
+
 static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
 }
-- 
2.26.2


WARNING: multiple messages have this Message-ID (diff)
From: John Garry <john.garry@huawei.com>
To: <joro@8bytes.org>, <will@kernel.org>, <robin.murphy@arm.com>,
	<hch@lst.de>, <m.szyprowski@samsung.com>
Cc: linux-scsi@vger.kernel.org, linuxarm@huawei.com,
	linux-kernel@vger.kernel.org, sai.praneeth.prakhya@intel.com,
	iommu@lists.linux-foundation.org
Subject: [PATCH v2 07/15] iommu: Add iommu_realloc_dev_group()
Date: Mon, 10 May 2021 22:17:21 +0800	[thread overview]
Message-ID: <1620656249-68890-8-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1620656249-68890-1-git-send-email-john.garry@huawei.com>

Add a function to re-alloc IOMMU group default domain.

Signed-off-by: John Garry <john.garry@huawei.com>
---
 drivers/iommu/iommu.c | 12 ++++++++++++
 include/linux/iommu.h |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index f7253a973ab9..bdb9aa47dfca 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -3191,6 +3191,18 @@ static int iommu_change_dev_def_domain(struct iommu_group *group,
 	return ret;
 }
 
+int iommu_realloc_dev_group(struct device *dev)
+{
+	struct iommu_group *group;
+	int ret;
+
+	group = iommu_group_get(dev);
+	ret = iommu_change_dev_def_domain(group, dev, 0, true);
+	iommu_group_put(group);
+
+	return ret;
+}
+
 /*
  * Changing the default domain or any other IOMMU group attribute through sysfs
  * requires the users to unbind the drivers from the devices in the IOMMU group.
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index e26abda94792..6e187746af0f 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -482,6 +482,7 @@ bool iommu_get_dma_strict(struct iommu_domain *domain);
 
 extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
 			      unsigned long iova, int flags);
+extern int iommu_realloc_dev_group(struct device *dev);
 
 static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
@@ -699,6 +700,11 @@ static inline size_t iommu_map_sg_atomic(struct iommu_domain *domain,
 	return 0;
 }
 
+static inline int iommu_realloc_dev_group(struct device *dev)
+{
+	return -ENODEV;
+}
+
 static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
 }
-- 
2.26.2

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  parent reply	other threads:[~2021-05-10 14:27 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10 14:17 [PATCH v2 00/15] dma mapping/iommu: Allow IOMMU IOVA rcache range to be configured John Garry
2021-05-10 14:17 ` John Garry
2021-05-10 14:17 ` [PATCH v2 01/15] iommu: Reactor iommu_group_store_type() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 02/15] iova: Allow rcache range upper limit to be flexible John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 03/15] iommu: Allow max opt DMA len be set for a group via sysfs John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 04/15] iommu: Add iommu_group_get_max_opt_dma_size() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 05/15] iova: Add iova_domain_len_is_cached() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 06/15] iommu: Allow iommu_change_dev_def_domain() realloc default domain for same type John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` John Garry [this message]
2021-05-10 14:17   ` [PATCH v2 07/15] iommu: Add iommu_realloc_dev_group() John Garry
2021-05-10 14:17 ` [PATCH v2 08/15] dma-iommu: Add iommu_reconfig_dev_group_dma() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 09/15] iova: Add init_iova_domain_ext() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 17:50   ` kernel test robot
2021-05-10 17:50     ` kernel test robot
2021-05-10 17:50     ` kernel test robot
2021-05-10 17:50   ` [RFC PATCH] iova: __init_iova_domain can be static kernel test robot
2021-05-10 17:50     ` kernel test robot
2021-05-10 17:50     ` kernel test robot
2021-05-10 14:17 ` [PATCH v2 10/15] dma-iommu: Use init_iova_domain_ext() for IOVA domain init John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 11/15] dma-iommu: Reconfig group domain John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 12/15] iommu: Add iommu_set_dev_dma_opt_size() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 13/15] dma-mapping: Add dma_set_max_opt_size() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 14/15] dma-iommu: Add iommu_dma_set_opt_size() John Garry
2021-05-10 14:17   ` John Garry
2021-05-10 14:17 ` [PATCH v2 15/15] scsi: hisi_sas: Set max optimal DMA size for v3 hw John Garry
2021-05-10 14:17   ` John Garry
2021-05-20  8:28 ` [PATCH v2 00/15] dma mapping/iommu: Allow IOMMU IOVA rcache range to be configured John Garry
2021-05-20  8:28   ` John Garry

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