[PATCH 01/11] ACPICA: Introduce GIC version for arm based system

[Hanjun Guo]

From: Tomasz Nowicki <tomasz.nowicki at linaro.org>

A new field is added in GIC distributor to indication
the GIC version, support it in ACPICA for later use

Will upstreamed by Lv Zheng after ACPICA supporting
ACPI 6.0 is released.

Signed-off-by: Tomasz Nowicki <tomasz.nowicki at linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo at linaro.org>
---
 include/acpi/actbl1.h | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index b80b0e6..b4f0f74 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -819,7 +819,7 @@ struct acpi_madt_generic_interrupt {
 #define ACPI_MADT_PERFORMANCE_IRQ_MODE  (1<<1)	/* 01: Performance Interrupt Mode */
 #define ACPI_MADT_VGIC_IRQ_MODE         (1<<2)	/* 02: VGIC Maintenance Interrupt mode */
 
-/* 12: Generic Distributor (ACPI 5.0) */
+/* 12: Generic Distributor (ACPI 6.0) */
 
 struct acpi_madt_generic_distributor {
 	struct acpi_subtable_header header;
@@ -827,7 +827,20 @@ struct acpi_madt_generic_distributor {
 	u32 gic_id;
 	u64 base_address;
 	u32 global_irq_base;
-	u32 reserved2;		/* reserved - must be zero */
+	u8  gic_version;
+	u8  reserved2[3];	/* reserved - must be zero */
+};
+
+/* Values for gic_version in Generic Distributor  (ACPI 6.0) */
+
+enum acpi_madt_gic_ver_type
+{
+	ACPI_MADT_GIC_VER_UNKNOWN	= 0,
+	ACPI_MADT_GIC_VER_V1		= 1,
+	ACPI_MADT_GIC_VER_V2		= 2,
+	ACPI_MADT_GIC_VER_V3		= 3,
+	ACPI_MADT_GIC_VER_V4		= 4,
+	ACPI_MADT_GIC_VER_RESERVED	= 5	/* 5 and greater are reserved */
 };
 
 /* 13: Generic MSI Frame (ACPI 5.1) */
-- 
1.9.1