linux-kernel - [RFC v2 18/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure

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Date:   Mon, 26 Apr 2021 11:01:45 -0700
From:   Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Tony Luck <tony.luck@...el.com>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        Raj Ashok <ashok.raj@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Subject: [RFC v2 18/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure

ACPICA commit f1ee04207a212f6c519441e7e25397649ebc4cea

Add Multiprocessor Wakeup Mailbox Structure definition. It is useful
in parsing MADT Wake table.

Link: https://github.com/acpica/acpica/commit/f1ee0420
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
---
 include/acpi/actbl2.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index b2362600b9ff..7dce422f6119 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -733,6 +733,20 @@ struct acpi_madt_multiproc_wakeup {
 	u64 base_address;
 };
 
+#define ACPI_MULTIPROC_WAKEUP_MB_OS_SIZE	2032
+#define ACPI_MULTIPROC_WAKEUP_MB_FIRMWARE_SIZE	2048
+
+struct acpi_madt_multiproc_wakeup_mailbox {
+	u16 command;
+	u16 reserved;		/* reserved - must be zero */
+	u32 apic_id;
+	u64 wakeup_vector;
+	u8 reserved_os[ACPI_MULTIPROC_WAKEUP_MB_OS_SIZE];	/* reserved for OS use */
+	u8 reserved_firmware[ACPI_MULTIPROC_WAKEUP_MB_FIRMWARE_SIZE];	/* reserved for firmware use */
+};
+
+#define ACPI_MP_WAKE_COMMAND_WAKEUP    1
+
 /*
  * Common flags fields for MADT subtables
  */
-- 
2.25.1