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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>,
	Elena Reshetova <elena.reshetova@intel.com>,
	Jun Nakajima <jun.nakajima@intel.com>,
	Rick Edgecombe  <rick.p.edgecombe@intel.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	"Kalra, Ashish" <ashish.kalra@amd.com>,
	Sean Christopherson <seanjc@google.com>,
	"Huang, Kai" <kai.huang@intel.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	Baoquan He <bhe@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	"K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	kexec@lists.infradead.org,
	linux-hyperv@vger.kernel.org,
	linux-acpi@vger.kernel.org,
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	linux-kernel@vger.kernel.org,
	Tao Liu <ltao@redhat.com>
Subject: [PATCHv11 19/19] ACPI: tables: Print MULTIPROC_WAKEUP when MADT is parsed
Date: Tue, 28 May 2024 12:55:22 +0300
Message-ID: <20240528095522.509667-20-kirill.shutemov@linux.intel.com>
In-Reply-To: <20240528095522.509667-1-kirill.shutemov@linux.intel.com>
References: <20240528095522.509667-1-kirill.shutemov@linux.intel.com>
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When MADT is parsed, print MULTIPROC_WAKEUP information:

ACPI: MP Wakeup (version[1], mailbox[0x7fffd000], reset[0x7fffe068])

This debug information will be very helpful during bring up.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: Kai Huang <kai.huang@intel.com>
Tested-by: Tao Liu <ltao@redhat.com>
---
 drivers/acpi/tables.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index b976e5fc3fbc..9e1b01c35070 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -198,6 +198,20 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
 		}
 		break;
 
+	case ACPI_MADT_TYPE_MULTIPROC_WAKEUP:
+		{
+			struct acpi_madt_multiproc_wakeup *p =
+				(struct acpi_madt_multiproc_wakeup *)header;
+			u64 reset_vector = 0;
+
+			if (p->version >= ACPI_MADT_MP_WAKEUP_VERSION_V1)
+				reset_vector = p->reset_vector;
+
+			pr_debug("MP Wakeup (version[%d], mailbox[%#llx], reset[%#llx])\n",
+				 p->version, p->mailbox_address, reset_vector);
+		}
+		break;
+
 	case ACPI_MADT_TYPE_CORE_PIC:
 		{
 			struct acpi_madt_core_pic *p = (struct acpi_madt_core_pic *)header;
-- 
2.43.0