[PATCH v2 12/22] ACPICA: ACPI 6.4: add SDEV secure access components

From: Erik Kaneda <erik.kaneda@intel.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Cc: Erik Kaneda <erik.kaneda@intel.com>, Bob Moore <robert.moore@intel.com>
Subject: [PATCH v2 12/22] ACPICA: ACPI 6.4: add SDEV secure access components
Date: Tue,  6 Apr 2021 14:30:18 -0700	[thread overview]
Message-ID: <20210406213028.718796-13-erik.kaneda@intel.com> (raw)
In-Reply-To: <20210406213028.718796-1-erik.kaneda@intel.com>

ACPICA commit 44ca5f4f9be24bf64524cdb1de46322509319056

This entails adding an optional subtable indicating secure access
components as well as two different types of secure access components
(ID-based or Memory). For definitons and uses, consult the ACPI
specification.

Link: https://github.com/acpica/acpica/commit/44ca5f4f
Signed-off-by: Erik Kaneda <erik.kaneda@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
---
 include/acpi/actbl2.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 31ed30208c8a..2ae925fb7728 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1732,6 +1732,7 @@ enum acpi_sdev_type {
 /* Values for flags above */
 
 #define ACPI_SDEV_HANDOFF_TO_UNSECURE_OS    (1)
+#define ACPI_SDEV_SECURE_COMPONENTS_PRESENT (1<<1)
 
 /*
  * SDEV subtables
@@ -1747,6 +1748,46 @@ struct acpi_sdev_namespace {
 	u16 vendor_data_length;
 };
 
+struct acpi_sdev_secure_component {
+	u16 secure_component_offset;
+	u16 secure_component_length;
+};
+
+/*
+ * SDEV sub-subtables ("Components") for above
+ */
+struct acpi_sdev_component {
+	struct acpi_sdev_header header;
+};
+
+/* Values for sub-subtable type above */
+
+enum acpi_sac_type {
+	ACPI_SDEV_TYPE_ID_COMPONENT = 0,
+	ACPI_SDEV_TYPE_MEM_COMPONENT = 1
+};
+
+struct acpi_sdev_id_component {
+	struct acpi_sdev_header header;
+	u16 hardware_id_offset;
+	u16 hardware_id_length;
+	u16 subsystem_id_offset;
+	u16 subsystem_id_length;
+	u16 hardware_revision;
+	u8 hardware_rev_present;
+	u8 class_code_present;
+	u8 pci_base_class;
+	u8 pci_sub_class;
+	u8 pci_programming_xface;
+};
+
+struct acpi_sdev_mem_component {
+	struct acpi_sdev_header header;
+	u32 reserved;
+	u64 memory_base_address;
+	u64 memory_length;
+};
+
 /* 1: PCIe Endpoint Device Based Device Structure */
 
 struct acpi_sdev_pcie {
-- 
2.29.2

