[PATCH 06/32] ACPICA: Add support for ASPT table in disassembler

Rafael J. Wysocki
2023-04-05T14:04:22Z

From: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>

ACPICA commit 6771f8b758299bd383bab145d5fd36ec229b2d70

ASPT is the AMD Secure Processor table, found in Hyper-V VMs when SNP
isolation is exposed to the VM and in some high-end AMD servers. This
commit adds support for rev 1 of the ASPT spec in the disassembler.

Link: https://github.com/acpica/acpica/commit/6771f8b7
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
include/acpi/actbl1.h | 46 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 81b9e794424d..b5e011da5271 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -26,6 +26,7 @@
*/
#define ACPI_SIG_AEST "AEST" /* Arm Error Source Table */
#define ACPI_SIG_ASF "ASF!" /* Alert Standard Format table */
+#define ACPI_SIG_ASPT "ASPT" /* AMD Secure Processor Table */
#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 */
@@ -109,6 +110,51 @@ struct acpi_whea_header {
u64 mask; /* Bitmask required for this register instruction */
};

+/* https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/acpitabl/ns-acpitabl-aspt_table */
+#define ASPT_REVISION_ID 0x01
+struct acpi_table_aspt {
+ struct acpi_table_header header;
+ u32 num_entries;
+};
+
+struct acpi_aspt_header {
+ u16 type;
+ u16 length;
+};
+
+enum acpi_aspt_type {
+ ACPI_ASPT_TYPE_GLOBAL_REGS = 0,
+ ACPI_ASPT_TYPE_SEV_MBOX_REGS = 1,
+ ACPI_ASPT_TYPE_ACPI_MBOX_REGS = 2,
+};
+
+/* 0: ASPT Global Registers */
+struct acpi_aspt_global_regs {
+ struct acpi_aspt_header header;
+ u32 reserved;
+ u64 feature_reg_addr;
+ u64 irq_en_reg_addr;
+ u64 irq_st_reg_addr;
+};
+
+/* 1: ASPT SEV Mailbox Registers */
+struct acpi_aspt_sev_mbox_regs {
+ struct acpi_aspt_header header;
+ u8 mbox_irq_id;
+ u8 reserved[3];
+ u64 cmd_resp_reg_addr;
+ u64 cmd_buf_lo_reg_addr;
+ u64 cmd_buf_hi_reg_addr;
+};
+
+/* 2: ASPT ACPI Mailbox Registers */
+struct acpi_aspt_acpi_mbox_regs {
+ struct acpi_aspt_header header;
+ u32 reserved1;
+ u64 cmd_resp_reg_addr;
+ u64 reserved2[2];
+};
+
/*******************************************************************************
*
* ASF - Alert Standard Format table (Signature "ASF!")
--
2.35.3