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[Qemu-devel] [RFC v5 7/7] hw/arm/virt-acpi-build: Add ITS description in
From: |
Eric Auger |
Subject: |
[Qemu-devel] [RFC v5 7/7] hw/arm/virt-acpi-build: Add ITS description in ACPI MADT table |
Date: |
Tue, 2 Aug 2016 20:07:27 +0200 |
This patch exposes the GICv3 ITS to the ACPI guest. The ITS structure
is added to the MADT table.
Signed-off-by: Eric Auger <address@hidden>
---
v5: new
Tested with Tomasz' kernel series on guest side:
- [PATCH V7 0/8] Introduce ACPI world to ITS,
https://lkml.org/lkml/2016/6/20/321
- for running PCIe on the guest (virtio-pci-net or vhost-net)
the following series is also needed, although not directly ITS:
Support for ARM64 ACPI based PCI host controller,
https://lwn.net/Articles/690995/
---
hw/arm/virt-acpi-build.c | 7 +++++++
include/hw/acpi/acpi-defs.h | 13 ++++++++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 28fc59c..6cfedff 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -546,6 +546,7 @@ build_madt(GArray *table_data, BIOSLinker *linker,
VirtGuestInfo *guest_info)
}
if (guest_info->gic_version == 3) {
+ AcpiMadtGicIts *gic_its;
AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data,
sizeof *gicr);
@@ -553,6 +554,12 @@ build_madt(GArray *table_data, BIOSLinker *linker,
VirtGuestInfo *guest_info)
gicr->length = sizeof(*gicr);
gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
+
+ gic_its = acpi_data_push(table_data, sizeof *gic_its);
+ gic_its->type = ACPI_APIC_ITS_STRUCTURE;
+ gic_its->length = sizeof(*gic_its);
+ gic_its->gic_its_id = 0;
+ gic_its->base_address = cpu_to_le64(memmap[VIRT_GIC_ITS].base);
} else {
gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 41c1d95..ba3be1e 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -294,7 +294,8 @@ typedef struct AcpiMultipleApicTable AcpiMultipleApicTable;
#define ACPI_APIC_GENERIC_DISTRIBUTOR 12
#define ACPI_APIC_GENERIC_MSI_FRAME 13
#define ACPI_APIC_GENERIC_REDISTRIBUTOR 14
-#define ACPI_APIC_RESERVED 15 /* 15 and greater are reserved */
+#define ACPI_APIC_ITS_STRUCTURE 15
+#define ACPI_APIC_RESERVED 16 /* 16 and greater are reserved */
/*
* MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
@@ -386,6 +387,16 @@ struct AcpiMadtGenericMsiFrame {
typedef struct AcpiMadtGenericMsiFrame AcpiMadtGenericMsiFrame;
+struct AcpiMadtGicIts {
+ ACPI_SUB_HEADER_DEF
+ uint16_t reserved;
+ uint32_t gic_its_id;
+ uint64_t base_address;
+ uint32_t reserved2;
+} QEMU_PACKED;
+
+typedef struct AcpiMadtGicIts AcpiMadtGicIts;
+
struct AcpiMadtGenericRedistributor {
ACPI_SUB_HEADER_DEF
uint16_t reserved;
--
2.5.5
- [Qemu-devel] [RFC v5 2/7] target-arm: move gicv3_class_name from machine to kvm_arm.h, (continued)
- [Qemu-devel] [RFC v5 2/7] target-arm: move gicv3_class_name from machine to kvm_arm.h, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 1/7] hw/intc/arm_gicv3_its: Implement ITS base class, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 3/7] linux-headers: update to 4.7-rc6 + ITS emulation and GSI routing, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 4/7] target-arm/kvm: Pass requester ID to MSI routing functions, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 5/7] hw/intc/arm_gicv3_its: Implement support for in-kernel ITS emulation, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 6/7] arm/virt: Add ITS to the virt board, Eric Auger, 2016/08/02
- [Qemu-devel] [RFC v5 7/7] hw/arm/virt-acpi-build: Add ITS description in ACPI MADT table,
Eric Auger <=