From: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
To: lorenzo.pieralisi@arm.com, robin.murphy@arm.com,
marc.zyngier@arm.com, will.deacon@arm.com
Cc: joro@8bytes.org, john.garry@huawei.com, xuwei5@hisilicon.com,
guohanjun@huawei.com, iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
devicetree@vger.kernel.org, linuxarm@huawei.com,
Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Subject: [PATCH v11 2/3] iommu/dma: Add HW MSI(GICv3 ITS) address regions reservation
Date: Wed, 13 Dec 2017 11:58:29 +0000 [thread overview]
Message-ID: <20171213115830.61872-3-shameerali.kolothum.thodi@huawei.com> (raw)
In-Reply-To: <20171213115830.61872-1-shameerali.kolothum.thodi@huawei.com>
Modified iommu_dma_get_resv_regions() to include GICv3 ITS
region on ACPI based ARM platfiorms which may require HW MSI
reservations.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
---
drivers/iommu/dma-iommu.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 25914d3..f05f3cf 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -19,6 +19,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <linux/acpi_iort.h>
#include <linux/device.h>
#include <linux/dma-iommu.h>
#include <linux/gfp.h>
@@ -167,13 +168,18 @@ void iommu_put_dma_cookie(struct iommu_domain *domain)
*
* IOMMU drivers can use this to implement their .get_resv_regions callback
* for general non-IOMMU-specific reservations. Currently, this covers host
- * bridge windows for PCI devices.
+ * bridge windows for PCI devices and GICv3 ITS region reservation on ACPI
+ * based ARM platforms that may require HW MSI reservation.
*/
void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
{
struct pci_host_bridge *bridge;
struct resource_entry *window;
+ if (!is_of_node(dev->iommu_fwspec->iommu_fwnode) &&
+ iort_iommu_msi_get_resv_regions(dev, list) < 0)
+ return;
+
if (!dev_is_pci(dev))
return;
--
1.9.1
next prev parent reply other threads:[~2017-12-13 11:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-13 11:58 [PATCH v11 0/3] iommu/smmu-v3: Workaround for hisilicon 161010801 erratum(reserve HW MSI) Shameer Kolothum
2017-12-13 11:58 ` [PATCH v11 1/3] ACPI/IORT: Add msi address regions reservation helper Shameer Kolothum
2017-12-14 11:47 ` Lorenzo Pieralisi
2017-12-14 12:17 ` Shameerali Kolothum Thodi
2017-12-14 12:43 ` Lorenzo Pieralisi
2017-12-13 11:58 ` Shameer Kolothum [this message]
2017-12-13 11:58 ` [PATCH v11 3/3] arm64:dts:hisilicon Disable hisilicon smmu node on hip06/hip07 Shameer Kolothum
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=20171213115830.61872-3-shameerali.kolothum.thodi@huawei.com \
--to=shameerali.kolothum.thodi@huawei.com \
--cc=devicetree@vger.kernel.org \
--cc=guohanjun@huawei.com \
--cc=iommu@lists.linux-foundation.org \
--cc=john.garry@huawei.com \
--cc=joro@8bytes.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linuxarm@huawei.com \
--cc=lorenzo.pieralisi@arm.com \
--cc=marc.zyngier@arm.com \
--cc=robin.murphy@arm.com \
--cc=will.deacon@arm.com \
--cc=xuwei5@hisilicon.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).