linux-kernel - [PATCH v6 02/27] ACPI/CDAT: Add CDAT/DSMAS shared and read only flag values

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Message-Id: <20241105-dcd-type2-upstream-v6-2-85c7fa2140fe@intel.com>
Date: Tue, 05 Nov 2024 12:38:24 -0600
From: Ira Weiny <ira.weiny@...el.com>
To: Dave Jiang <dave.jiang@...el.com>, Fan Ni <fan.ni@...sung.com>, 
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 Navneet Singh <navneet.singh@...el.com>, Jonathan Corbet <corbet@....net>, 
 Andrew Morton <akpm@...ux-foundation.org>
Cc: Dan Williams <dan.j.williams@...el.com>, 
 Davidlohr Bueso <dave@...olabs.net>, 
 Alison Schofield <alison.schofield@...el.com>, 
 Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>, 
 linux-cxl@...r.kernel.org, linux-doc@...r.kernel.org, 
 nvdimm@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Robert Moore <robert.moore@...el.com>, Len Brown <lenb@...nel.org>, 
 "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, 
 linux-acpi@...r.kernel.org, acpica-devel@...ts.linux.dev
Subject: [PATCH v6 02/27] ACPI/CDAT: Add CDAT/DSMAS shared and read only
 flag values

The Coherent Device Attribute Table (CDAT) Device Scoped Memory Affinity
Structure (DSMAS) version 1.04 [1] defines flags to indicate if a DPA range
is read only and/or shared.

Add read only and shareable flag definitions.

This change was merged in ACPI via PR 976.[2]

Link: https://uefi.org/sites/default/files/resources/Coherent%20Device%20Attribute%20Table_1.04%20published_0.pdf [1]
Link: https://github.com/acpica/acpica/pull/976 [2]
Cc: Robert Moore <robert.moore@...el.com>
Cc: Len Brown <lenb@...nel.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Cc: linux-acpi@...r.kernel.org
Cc: acpica-devel@...ts.linux.dev
Signed-off-by: Ira Weiny <ira.weiny@...el.com>
---
 include/acpi/actbl1.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 199afc2cd122ca8b383b1c9286f8c8cc33842fae..387fc821703a80b324637743f0d5afe03b8d7943 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -403,6 +403,8 @@ struct acpi_cdat_dsmas {
 /* Flags for subtable above */

 #define ACPI_CDAT_DSMAS_NON_VOLATILE        (1 << 2)
+#define ACPI_CDAT_DSMAS_SHAREABLE           (1 << 3)
+#define ACPI_CDAT_DSMAS_READ_ONLY           (1 << 6)

 /* Subtable 1: Device scoped Latency and Bandwidth Information Structure (DSLBIS) */

-- 
2.47.0