[PATCH v2 14/22] ACPICA: CXL 2.0: CEDT: Add new CEDT table

From: Erik Kaneda <erik.kaneda@intel.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Cc: Ben Widawsky <ben@bwidawsk.net>,
	Ben Widawsky <ben.widawsky@intel.com>,
	Bob Moore <robert.moore@intel.com>,
	Erik Kaneda <erik.kaneda@intel.com>
Subject: [PATCH v2 14/22] ACPICA: CXL 2.0: CEDT: Add new CEDT table
Date: Tue,  6 Apr 2021 14:30:20 -0700	[thread overview]
Message-ID: <20210406213028.718796-15-erik.kaneda@intel.com> (raw)
In-Reply-To: <20210406213028.718796-1-erik.kaneda@intel.com>

From: Ben Widawsky <ben@bwidawsk.net>

ACPICA commit 0b03aa8ebd7a5b2b9407893f123ee587af45926f

This sets up all of the boilerplate without actually doing anything.

Link: https://github.com/acpica/acpica/commit/0b03aa8e
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Kaneda <erik.kaneda@intel.com>
---
 include/acpi/actbl1.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 2ee7eeea783b..7b286766e810 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -28,6 +28,7 @@
 #define ACPI_SIG_BERT           "BERT"	/* Boot Error Record Table */
 #define ACPI_SIG_BGRT           "BGRT"	/* Boot Graphics Resource Table */
 #define ACPI_SIG_BOOT           "BOOT"	/* Simple Boot Flag Table */
+#define ACPI_SIG_CEDT           "CEDT"	/* CXL Early Discovery Table */
 #define ACPI_SIG_CPEP           "CPEP"	/* Corrected Platform Error Polling table */
 #define ACPI_SIG_CSRT           "CSRT"	/* Core System Resource Table */
 #define ACPI_SIG_DBG2           "DBG2"	/* Debug Port table type 2 */
@@ -301,6 +302,48 @@ struct acpi_table_boot {
 	u8 reserved[3];
 };
 
+/*******************************************************************************
+ *
+ * CEDT - CXL Early Discovery Table
+ *        Version 1
+ *
+ * Conforms to the "CXL Early Discovery Table" (CXL 2.0)
+ *
+ ******************************************************************************/
+
+struct acpi_table_cedt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+};
+
+/* CEDT subtable header (Performance Record Structure) */
+
+struct acpi_cedt_header {
+	u8 type;
+	u8 reserved;
+	u16 length;
+};
+
+/* Values for Type field above */
+
+enum acpi_cedt_type {
+	ACPI_CEDT_TYPE_CHBS = 0,
+};
+
+/*
+ * CEDT subtables
+ */
+
+/* 0: CXL Host Bridge Structure */
+
+struct acpi_cedt_chbs {
+	ACPI_CEDT_HEADER header;
+	u32 uid;
+	u32 cxl_version;
+	u32 reserved;
+	u64 base;
+	u64 length;
+};
+
 /*******************************************************************************
  *
  * CPEP - Corrected Platform Error Polling table (ACPI 4.0)
-- 
2.29.2

