From: Shameer Kolothum <shameerali.kolothum.thodi-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
To: lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org,
robin.murphy-5wv7dgnIgG8@public.gmane.org,
marc.zyngier-5wv7dgnIgG8@public.gmane.org,
will.deacon-5wv7dgnIgG8@public.gmane.org
Cc: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
john.garry-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
xuwei5-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org,
guohanjun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linuxarm-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
Shameer Kolothum
<shameerali.kolothum.thodi-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Subject: [PATCH v12 2/3] iommu/dma: Add HW MSI(GICv3 ITS) address regions reservation
Date: Thu, 14 Dec 2017 16:09:56 +0000 [thread overview]
Message-ID: <20171214160957.13716-3-shameerali.kolothum.thodi@huawei.com> (raw)
In-Reply-To: <20171214160957.13716-1-shameerali.kolothum.thodi-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
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-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Reviewed-by: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
---
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
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2017-12-14 16:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-14 16:09 [PATCH v12 0/3] iommu/smmu-v3: Workaround for hisilicon 161010801 erratum(reserve HW MSI) Shameer Kolothum
2017-12-14 16:09 ` [PATCH v12 1/3] ACPI/IORT: Add msi address regions reservation helper Shameer Kolothum
2017-12-15 10:29 ` Lorenzo Pieralisi
2017-12-15 14:49 ` Marc Zyngier
[not found] ` <20171214160957.13716-1-shameerali.kolothum.thodi-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2017-12-14 16:09 ` Shameer Kolothum [this message]
2017-12-14 16:09 ` [PATCH v12 3/3] arm64:dts:hisilicon Disable hisilicon smmu node on hip06/hip07 Shameer Kolothum
2018-03-02 16:34 ` Wei Xu
2017-12-15 15:01 ` [PATCH v12 0/3] iommu/smmu-v3: Workaround for hisilicon 161010801 erratum(reserve HW MSI) Shameerali Kolothum Thodi
2018-01-12 14:48 ` Shameerali Kolothum Thodi
2018-01-29 15:39 ` Will Deacon
[not found] ` <20180129153939.GC24972-5wv7dgnIgG8@public.gmane.org>
2018-01-29 16:16 ` Shameerali Kolothum Thodi
[not found] ` <5FC3163CFD30C246ABAA99954A238FA83863FC88-WFPaWmAhWqtUuCJht5byYAK1hpo4iccwjNknBlVQO8k@public.gmane.org>
2018-01-29 16:21 ` Will Deacon
2018-01-29 16:41 ` Shameerali Kolothum Thodi
2018-01-31 9:30 ` Shameerali Kolothum Thodi
[not found] ` <20180129162109.GA25266-5wv7dgnIgG8@public.gmane.org>
2018-02-13 9:18 ` Shameerali Kolothum Thodi
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=20171214160957.13716-3-shameerali.kolothum.thodi@huawei.com \
--to=shameerali.kolothum.thodi-hv44wf8li93qt0dzr+alfa@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=guohanjun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org \
--cc=iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org \
--cc=john.garry-hv44wF8Li93QT0dZR+AlfA@public.gmane.org \
--cc=joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org \
--cc=linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linuxarm-hv44wF8Li93QT0dZR+AlfA@public.gmane.org \
--cc=lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org \
--cc=marc.zyngier-5wv7dgnIgG8@public.gmane.org \
--cc=robin.murphy-5wv7dgnIgG8@public.gmane.org \
--cc=will.deacon-5wv7dgnIgG8@public.gmane.org \
--cc=xuwei5-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.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).