From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>, Jason Gunthorpe <jgg@nvidia.com>,
Christoph Hellwig <hch@infradead.org>,
Kevin Tian <kevin.tian@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Dave Jiang <dave.jiang@intel.com>, Vinod Koul <vkoul@kernel.org>
Cc: Eric Auger <eric.auger@redhat.com>, Liu Yi L <yi.l.liu@intel.com>,
Jacob jun Pan <jacob.jun.pan@intel.com>,
iommu@lists.linux-foundation.org, iommu@lists.linux.dev,
linux-kernel@vger.kernel.org, Lu Baolu <baolu.lu@linux.intel.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: [PATCH v9 06/11] arm-smmu-v3/sva: Add SVA domain support
Date: Tue, 21 Jun 2022 22:43:48 +0800 [thread overview]
Message-ID: <20220621144353.17547-7-baolu.lu@linux.intel.com> (raw)
Message-ID: <20220621144348.5lBqu5eyMiSCk14nOAeLSBuv0hnvk593kxQRP-sXjD0@z> (raw)
In-Reply-To: <20220621144353.17547-1-baolu.lu@linux.intel.com>
Add support for SVA domain allocation and provide an SVA-specific
iommu_domain_ops.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 6 ++
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 69 +++++++++++++++++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 3 +
3 files changed, 78 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index d2ba86470c42..96399dd3a67a 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -758,6 +758,7 @@ struct iommu_sva *arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm);
void arm_smmu_sva_unbind(struct iommu_sva *handle);
u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle);
void arm_smmu_sva_notifier_synchronize(void);
+struct iommu_domain *arm_smmu_sva_domain_alloc(void);
#else /* CONFIG_ARM_SMMU_V3_SVA */
static inline bool arm_smmu_sva_supported(struct arm_smmu_device *smmu)
{
@@ -803,5 +804,10 @@ static inline u32 arm_smmu_sva_get_pasid(struct iommu_sva *handle)
}
static inline void arm_smmu_sva_notifier_synchronize(void) {}
+
+static inline struct iommu_domain *arm_smmu_sva_domain_alloc(void)
+{
+ return NULL;
+}
#endif /* CONFIG_ARM_SMMU_V3_SVA */
#endif /* _ARM_SMMU_V3_H */
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
index f155d406c5d5..fc4555dac5b4 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
@@ -549,3 +549,72 @@ void arm_smmu_sva_notifier_synchronize(void)
*/
mmu_notifier_synchronize();
}
+
+static int arm_smmu_sva_set_dev_pasid(struct iommu_domain *domain,
+ struct device *dev, ioasid_t id)
+{
+ int ret = 0;
+ struct mm_struct *mm;
+ struct iommu_sva *handle;
+
+ if (domain->type != IOMMU_DOMAIN_SVA)
+ return -EINVAL;
+
+ mm = domain->mm;
+ if (WARN_ON(!mm))
+ return -ENODEV;
+
+ mutex_lock(&sva_lock);
+ handle = __arm_smmu_sva_bind(dev, mm);
+ if (IS_ERR(handle))
+ ret = PTR_ERR(handle);
+ mutex_unlock(&sva_lock);
+
+ return ret;
+}
+
+static void arm_smmu_sva_block_dev_pasid(struct iommu_domain *domain,
+ struct device *dev, ioasid_t id)
+{
+ struct mm_struct *mm = domain->mm;
+ struct arm_smmu_bond *bond = NULL, *t;
+ struct arm_smmu_master *master = dev_iommu_priv_get(dev);
+
+ mutex_lock(&sva_lock);
+ list_for_each_entry(t, &master->bonds, list) {
+ if (t->mm == mm) {
+ bond = t;
+ break;
+ }
+ }
+
+ if (!WARN_ON(!bond) && refcount_dec_and_test(&bond->refs)) {
+ list_del(&bond->list);
+ arm_smmu_mmu_notifier_put(bond->smmu_mn);
+ kfree(bond);
+ }
+ mutex_unlock(&sva_lock);
+}
+
+static void arm_smmu_sva_domain_free(struct iommu_domain *domain)
+{
+ kfree(domain);
+}
+
+static const struct iommu_domain_ops arm_smmu_sva_domain_ops = {
+ .set_dev_pasid = arm_smmu_sva_set_dev_pasid,
+ .block_dev_pasid = arm_smmu_sva_block_dev_pasid,
+ .free = arm_smmu_sva_domain_free,
+};
+
+struct iommu_domain *arm_smmu_sva_domain_alloc(void)
+{
+ struct iommu_domain *domain;
+
+ domain = kzalloc(sizeof(*domain), GFP_KERNEL);
+ if (!domain)
+ return NULL;
+ domain->ops = &arm_smmu_sva_domain_ops;
+
+ return domain;
+}
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 ae8ec8df47c1..a30b252e2f95 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -1999,6 +1999,9 @@ static struct iommu_domain *arm_smmu_domain_alloc(unsigned type)
{
struct arm_smmu_domain *smmu_domain;
+ if (type == IOMMU_DOMAIN_SVA)
+ return arm_smmu_sva_domain_alloc();
+
if (type != IOMMU_DOMAIN_UNMANAGED &&
type != IOMMU_DOMAIN_DMA &&
type != IOMMU_DOMAIN_DMA_FQ &&
--
2.25.1
next prev parent reply other threads:[~2022-06-21 14:48 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-21 14:43 [PATCH v9 00/11] iommu: SVA and IOPF refactoring Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-21 14:43 ` [PATCH v9 01/11] iommu: Add max_pasids field in struct iommu_device Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 8:05 ` Tian, Kevin
2022-06-27 8:05 ` Tian, Kevin
2022-06-21 14:43 ` [PATCH v9 02/11] iommu: Add max_pasids field in struct dev_iommu Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 8:06 ` Tian, Kevin
2022-06-27 8:06 ` Tian, Kevin
2022-06-21 14:43 ` [PATCH v9 03/11] iommu: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-21 14:43 ` [PATCH v9 04/11] iommu: Add sva iommu_domain support Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 8:29 ` Tian, Kevin
2022-06-27 8:29 ` Tian, Kevin
2022-06-28 5:41 ` Baolu Lu
2022-06-28 5:41 ` Baolu Lu
2022-06-28 8:50 ` Tian, Kevin
2022-06-28 8:50 ` Tian, Kevin
2022-06-28 11:33 ` Baolu Lu
2022-06-28 11:33 ` Baolu Lu
2022-06-29 1:54 ` Tian, Kevin
2022-06-29 1:54 ` Tian, Kevin
2022-06-29 4:44 ` Baolu Lu
2022-06-29 4:44 ` Baolu Lu
2022-06-28 11:41 ` Baolu Lu
2022-06-28 11:41 ` Baolu Lu
2022-06-21 14:43 ` [PATCH v9 05/11] iommu/vt-d: Add SVA domain support Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 8:32 ` Tian, Kevin
2022-06-27 8:32 ` Tian, Kevin
2022-06-21 14:43 ` Lu Baolu [this message]
2022-06-21 14:43 ` [PATCH v9 06/11] arm-smmu-v3/sva: " Lu Baolu
2022-06-27 11:50 ` Zhangfei Gao
2022-06-27 11:50 ` Zhangfei Gao
2022-06-28 5:46 ` Baolu Lu
2022-06-28 5:46 ` Baolu Lu
2022-06-28 6:13 ` Baolu Lu
2022-06-28 6:13 ` Baolu Lu
2022-06-28 6:17 ` Zhu, Tony
2022-06-28 6:17 ` Zhu, Tony
2022-06-21 14:43 ` [PATCH v9 07/11] iommu/sva: Refactoring iommu_sva_bind/unbind_device() Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 10:14 ` Tian, Kevin
2022-06-27 10:14 ` Tian, Kevin
2022-06-28 5:53 ` Baolu Lu
2022-06-28 5:53 ` Baolu Lu
2022-06-28 8:52 ` Tian, Kevin
2022-06-28 8:52 ` Tian, Kevin
2022-06-21 14:43 ` [PATCH v9 08/11] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-21 14:43 ` [PATCH v9 09/11] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-28 8:29 ` Tian, Kevin
2022-06-28 8:29 ` Tian, Kevin
2022-06-28 10:49 ` Baolu Lu
2022-06-28 10:49 ` Baolu Lu
2022-06-21 14:43 ` [PATCH v9 10/11] iommu: Per-domain I/O page fault handling Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-27 13:03 ` Ethan Zhao
2022-06-27 13:03 ` Ethan Zhao
2022-06-28 6:28 ` Baolu Lu
2022-06-28 6:28 ` Baolu Lu
2022-06-28 9:10 ` Ethan Zhao
2022-06-28 9:10 ` Ethan Zhao
2022-06-28 11:53 ` Baolu Lu
2022-06-28 11:53 ` Baolu Lu
2022-06-28 14:20 ` Jean-Philippe Brucker
2022-06-28 14:20 ` Jean-Philippe Brucker
2022-06-29 0:24 ` Baolu Lu
2022-06-29 0:24 ` Baolu Lu
2022-06-29 6:15 ` Ethan Zhao
2022-06-29 6:15 ` Ethan Zhao
2022-06-28 8:39 ` Tian, Kevin
2022-06-28 8:39 ` Tian, Kevin
2022-06-28 9:44 ` Jean-Philippe Brucker
2022-06-28 9:44 ` Jean-Philippe Brucker
2022-06-28 10:02 ` Tian, Kevin
2022-06-28 10:02 ` Tian, Kevin
2022-06-28 12:18 ` Baolu Lu
2022-06-28 12:18 ` Baolu Lu
2022-06-28 11:02 ` Baolu Lu
2022-06-28 11:02 ` Baolu Lu
2022-06-21 14:43 ` [PATCH v9 11/11] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
2022-06-21 14:43 ` Lu Baolu
2022-06-28 8:40 ` Tian, Kevin
2022-06-28 8:40 ` Tian, Kevin
2022-06-26 1:15 ` [PATCH v9 00/11] iommu: SVA and IOPF refactoring Baolu Lu
2022-06-26 1:15 ` Baolu Lu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220621144353.17547-7-baolu.lu@linux.intel.com \
--to=baolu.lu@linux.intel.com \
--cc=ashok.raj@intel.com \
--cc=dave.jiang@intel.com \
--cc=eric.auger@redhat.com \
--cc=hch@infradead.org \
--cc=iommu@lists.linux-foundation.org \
--cc=iommu@lists.linux.dev \
--cc=jacob.jun.pan@intel.com \
--cc=jean-philippe@linaro.com \
--cc=jean-philippe@linaro.org \
--cc=jgg@nvidia.com \
--cc=joro@8bytes.org \
--cc=kevin.tian@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=robin.murphy@arm.com \
--cc=vkoul@kernel.org \
--cc=will@kernel.org \
--cc=yi.l.liu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).