From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: Kyung Min Park <kyung.min.park@intel.com>,
iommu@lists.linux-foundation.org,
Chuck Lever <chuck.lever@oracle.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH 5/7] iommu/vt-d: Add new enum value and structure for SATC
Date: Thu, 4 Feb 2021 09:43:59 +0800 [thread overview]
Message-ID: <20210204014401.2846425-6-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20210204014401.2846425-1-baolu.lu@linux.intel.com>
From: Yian Chen <yian.chen@intel.com>
Starting from Intel Platform VT-d v3.2, BIOS may provide new remapping
structure SATC for SOC integrated devices, according to section 8.8 of
Intel VT-d architecture specification v3.2. The SATC structure reports
a list of the devices that require ATS for normal device operation. It
is a functional requirement that these devices will not work without OS
enabling ATS capability.
This patch introduces the new enum value and structure to represent the
remapping information. Kernel should parse the information from the
reporting structure and enable ATC for the devices as needed.
Signed-off-by: Yian Chen <yian.chen@intel.com>
Link: https://lore.kernel.org/r/20210203093329.1617808-1-baolu.lu@linux.intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
include/acpi/actbl1.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 43549547ed3e..c38e08cf1b9e 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -514,7 +514,8 @@ enum acpi_dmar_type {
ACPI_DMAR_TYPE_ROOT_ATS = 2,
ACPI_DMAR_TYPE_HARDWARE_AFFINITY = 3,
ACPI_DMAR_TYPE_NAMESPACE = 4,
- ACPI_DMAR_TYPE_RESERVED = 5 /* 5 and greater are reserved */
+ ACPI_DMAR_TYPE_SATC = 5,
+ ACPI_DMAR_TYPE_RESERVED = 6 /* 6 and greater are reserved */
};
/* DMAR Device Scope structure */
@@ -607,6 +608,14 @@ struct acpi_dmar_andd {
char device_name[1];
};
+/* 5: SOC Integrated Address Translation Cache Reporting Structure */
+
+struct acpi_dmar_satc {
+ struct acpi_dmar_header header;
+ u8 flags;
+ u8 reserved;
+ u16 segment;
+};
/*******************************************************************************
*
* DRTM - Dynamic Root of Trust for Measurement table
--
2.25.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-02-04 1:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-04 1:43 [PATCH 0/7] [PULL REQUEST] iommu/vt-d: Update for v5.12 Lu Baolu
2021-02-04 1:43 ` [PATCH 1/7] iommu/vt-d: Fix 'physical' typos Lu Baolu
2021-02-04 1:43 ` [PATCH 2/7] iommu/vt-d: Audit IOMMU Capabilities and add helper functions Lu Baolu
2021-02-04 1:43 ` [PATCH 3/7] iommu/vt-d: Move capability check code to cap_audit files Lu Baolu
2021-02-04 1:43 ` [PATCH 4/7] iommu/vt-d: Add iotlb_sync_map callback Lu Baolu
2021-02-04 1:43 ` Lu Baolu [this message]
2021-02-04 1:44 ` [PATCH 6/7] iommu/vt-d: Parse SATC reporting structure Lu Baolu
2021-02-04 1:44 ` [PATCH 7/7] iommu/vt-d: Apply SATC policy Lu Baolu
2021-02-04 5:32 ` [PATCH 0/7] [PULL REQUEST] iommu/vt-d: Update for v5.12 Lu Baolu
2021-02-04 11:52 ` Lu Baolu
2021-02-04 13:42 ` Joerg Roedel
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=20210204014401.2846425-6-baolu.lu@linux.intel.com \
--to=baolu.lu@linux.intel.com \
--cc=bhelgaas@google.com \
--cc=chuck.lever@oracle.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=kyung.min.park@intel.com \
--cc=robin.murphy@arm.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).