From a3a1a1c39bd530fe8bf64ef77fc4b34bbfe8b253 Mon Sep 17 00:00:00 2001
From: Bill XIE <persmule@hardenedlinux.org>
Date: Fri, 24 Jan 2020 23:20:57 +0800
Subject: [PATCH] mb/gigabyte/ga-b75m-d3h: add ACPI definitions for legacy PCI
 slots

All variants of ga-b75m-d3h lack ACPI definitions for legacy PCI
slots, which causes IRQ issue if it gets legacy PCI card installed.
The missing definitions (mainly Interrupt Routing Table) are added to
fix that.

NOTE: The added definitions are actually for ga-b75-d3v, but since
they form superset of definitions needed by ga-b75m-d3{h,v}, they can
be applied to all three existing variants with suitable preprocessor
instructions.

Change-Id: Id79c759a5fadb38c2873edc07293cbb14401ac9a
Signed-off-by: Bill XIE <persmule@hardenedlinux.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38557
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
 .../gigabyte/ga-b75m-d3h/acpi/pci.asl         | 53 +++++++++++++++++++
 src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl   |  1 +
 2 files changed, 54 insertions(+)
 create mode 100644 src/mainboard/gigabyte/ga-b75m-d3h/acpi/pci.asl

diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/acpi/pci.asl b/src/mainboard/gigabyte/ga-b75m-d3h/acpi/pci.asl
new file mode 100644
index 0000000000..e98c0a2286
--- /dev/null
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/acpi/pci.asl
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2020 Bill Xie <persmule@hardenedlinux.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+// Intel PCI to PCI bridge 0:1e.0
+
+Device (PCIB)
+{
+	Name (_ADR, 0x001E0000)  // _ADR: Address
+	Name (_PRW, Package(){ 13, 4 }) // Power Resources for Wake
+
+	Method (_PRT)  // _PRT: PCI Interrupt Routing Table
+	{
+		If (PICM) {
+			Return (Package() {
+				Package() { 0x0001ffff, 0, 0, 0x13 },
+				Package() { 0x0001ffff, 1, 0, 0x12 },
+				Package() { 0x0001ffff, 2, 0, 0x10 },
+				Package() { 0x0001ffff, 3, 0, 0x14 },
+#if CONFIG(BOARD_GIGABYTE_GA_B75_D3V)
+				Package() { 0x0002ffff, 0, 0, 0x12 },
+				Package() { 0x0002ffff, 1, 0, 0x10 },
+				Package() { 0x0002ffff, 2, 0, 0x14 },
+				Package() { 0x0002ffff, 3, 0, 0x13 },
+#endif
+			})
+		}
+		Return (Package() {
+			Package() { 0x0001ffff, 0, \_SB.PCI0.LPCB.LNKD, 0 },
+			Package() { 0x0001ffff, 1, \_SB.PCI0.LPCB.LNKC, 0 },
+			Package() { 0x0001ffff, 2, \_SB.PCI0.LPCB.LNKA, 0 },
+			Package() { 0x0001ffff, 3, \_SB.PCI0.LPCB.LNKE, 0 },
+#if CONFIG(BOARD_GIGABYTE_GA_B75_D3V)
+			Package() { 0x0002ffff, 0, \_SB.PCI0.LPCB.LNKC, 0 },
+			Package() { 0x0002ffff, 1, \_SB.PCI0.LPCB.LNKA, 0 },
+			Package() { 0x0002ffff, 2, \_SB.PCI0.LPCB.LNKE, 0 },
+			Package() { 0x0001ffff, 3, \_SB.PCI0.LPCB.LNKD, 0 },
+#endif
+		})
+	}
+}
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl b/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
index 47b2725cd7..91ed5511d4 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
@@ -37,6 +37,7 @@ DefinitionBlock(
 			#include <northbridge/intel/sandybridge/acpi/sandybridge.asl>
 			#include <southbridge/intel/bd82x6x/acpi/pch.asl>
 			#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
+			#include "acpi/pci.asl"
 		}
 	}
 }