From: Chuck Lever <chuck.lever@oracle.com>
To: baolu.lu@linux.intel.com
Cc: isaacm@codeaurora.org, robin.murphy@arm.com,
iommu@lists.linux-foundation.org, will@kernel.org
Subject: [PATCH RFC 2/9] iommu: Add iova and size as parameters in iotlb_sync_map
Date: Wed, 27 Jan 2021 15:00:32 -0500 [thread overview]
Message-ID: <161177763296.1311.15197214300351076283.stgit@manet.1015granger.net> (raw)
In-Reply-To: <161177711359.1311.417185373365934204.stgit@manet.1015granger.net>
From: Yong Wu <yong.wu@mediatek.com>
iotlb_sync_map allow IOMMU drivers tlb sync after completing the whole
mapping. This patch adds iova and size as the parameters in it. then the
IOMMU driver could flush tlb with the whole range once after iova mapping
to improve performance.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
drivers/iommu/iommu.c | 4 ++--
drivers/iommu/tegra-gart.c | 7 +++++--
include/linux/iommu.h | 3 ++-
3 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index c304a6a30d42..3d099a31ddca 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2443,7 +2443,7 @@ static int _iommu_map(struct iommu_domain *domain, unsigned long iova,
ret = __iommu_map(domain, iova, paddr, size, prot, GFP_KERNEL);
if (ret == 0 && ops->iotlb_sync_map)
- ops->iotlb_sync_map(domain);
+ ops->iotlb_sync_map(domain, iova, size);
return ret;
}
@@ -2575,7 +2575,7 @@ static size_t __iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
}
if (ops->iotlb_sync_map)
- ops->iotlb_sync_map(domain);
+ ops->iotlb_sync_map(domain, iova, mapped);
return mapped;
out_err:
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index fac720273889..05e8e19b8269 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -261,7 +261,8 @@ static int gart_iommu_of_xlate(struct device *dev,
return 0;
}
-static void gart_iommu_sync_map(struct iommu_domain *domain)
+static void gart_iommu_sync_map(struct iommu_domain *domain, unsigned long iova,
+ size_t size)
{
FLUSH_GART_REGS(gart_handle);
}
@@ -269,7 +270,9 @@ static void gart_iommu_sync_map(struct iommu_domain *domain)
static void gart_iommu_sync(struct iommu_domain *domain,
struct iommu_iotlb_gather *gather)
{
- gart_iommu_sync_map(domain);
+ size_t length = gather->end - gather->start;
+
+ gart_iommu_sync_map(domain, gather->start, length);
}
static const struct iommu_ops gart_iommu_ops = {
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index b3f0e2018c62..9ce0aa9e236b 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -246,7 +246,8 @@ struct iommu_ops {
size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
size_t size, struct iommu_iotlb_gather *iotlb_gather);
void (*flush_iotlb_all)(struct iommu_domain *domain);
- void (*iotlb_sync_map)(struct iommu_domain *domain);
+ void (*iotlb_sync_map)(struct iommu_domain *domain, unsigned long iova,
+ size_t size);
void (*iotlb_sync)(struct iommu_domain *domain,
struct iommu_iotlb_gather *iotlb_gather);
phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-01-27 20:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 20:00 [PATCH RFC 0/9] Possible set of VT-d optimizations Chuck Lever
2021-01-27 20:00 ` [PATCH RFC 1/9] iommu: Move iotlb_sync_map out from __iommu_map Chuck Lever
2021-01-28 2:40 ` Lu Baolu
2021-01-27 20:00 ` Chuck Lever [this message]
2021-01-28 2:44 ` [PATCH RFC 2/9] iommu: Add iova and size as parameters in iotlb_sync_map Lu Baolu
2021-01-28 12:51 ` Joerg Roedel
2021-01-28 13:19 ` Will Deacon
2021-01-28 13:26 ` Joerg Roedel
2021-01-27 20:00 ` [PATCH RFC 3/9] iommu/vt-d: Add iotlb_sync_map callback Chuck Lever
2021-01-27 20:00 ` [PATCH RFC 4/9] iommu/io-pgtable: Introduce map_sg() as a page table op Chuck Lever
2021-01-27 20:00 ` [PATCH RFC 5/9] iommu/io-pgtable-arm: Hook up map_sg() Chuck Lever
2021-01-28 13:53 ` Will Deacon
2021-01-27 20:01 ` [PATCH RFC 6/9] iommu/io-pgtable-arm-v7s: " Chuck Lever
2021-01-27 20:01 ` [PATCH RFC 7/9] iommu: Introduce map_sg() as an IOMMU op for IOMMU drivers Chuck Lever
2021-01-28 2:58 ` Lu Baolu
2021-01-27 20:01 ` [PATCH RFC 8/9] iommu/arm-smmu: Hook up map_sg() Chuck Lever
2021-01-27 20:01 ` [PATCH RFC 9/9] iommu/vt-d: Introduce map_sg() for Intel IOMMUs Chuck Lever
2021-01-28 2:28 ` [PATCH RFC 0/9] Possible set of VT-d optimizations Lu Baolu
2021-01-28 13:59 ` Robin Murphy
2021-01-28 14:52 ` Chuck Lever
2021-01-29 11:54 ` Lu Baolu
2021-02-01 18:08 ` Chuck Lever
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=161177763296.1311.15197214300351076283.stgit@manet.1015granger.net \
--to=chuck.lever@oracle.com \
--cc=baolu.lu@linux.intel.com \
--cc=iommu@lists.linux-foundation.org \
--cc=isaacm@codeaurora.org \
--cc=robin.murphy@arm.com \
--cc=will@kernel.org \
/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).