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[PATCH 5/6] pc: Add VIOT table for virtio-iommu
From: |
Jean-Philippe Brucker |
Subject: |
[PATCH 5/6] pc: Add VIOT table for virtio-iommu |
Date: |
Tue, 10 Aug 2021 10:45:05 +0200 |
The ACPI Virtual I/O Translation table (VIOT) describes the relation
between a virtio-iommu and the endpoints it manages. When a virtio-iommu
device is instantiated, add a VIOT table.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
include/hw/i386/pc.h | 2 ++
hw/i386/acpi-build.c | 5 +++++
hw/i386/pc.c | 7 +++++++
hw/i386/Kconfig | 1 +
4 files changed, 15 insertions(+)
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 88dffe7517..979b8d0b7c 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -45,6 +45,8 @@ typedef struct PCMachineState {
bool pit_enabled;
bool hpet_enabled;
bool default_bus_bypass_iommu;
+ bool virtio_iommu;
+ uint16_t virtio_iommu_bdf;
uint64_t max_fw_size;
/* NUMA information: */
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index a33ac8b91e..078b7f5c6f 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -71,6 +71,7 @@
#include "hw/acpi/ipmi.h"
#include "hw/acpi/hmat.h"
+#include "hw/acpi/viot.h"
/* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
* -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
@@ -2559,6 +2560,10 @@ void acpi_build(AcpiBuildTables *tables, MachineState
*machine)
build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id,
x86ms->oem_table_id);
}
+ } else if (pcms->virtio_iommu) {
+ acpi_add_table(table_offsets, tables_blob);
+ build_viot(tables_blob, tables->linker, pcms->virtio_iommu_bdf,
+ x86ms->oem_id, x86ms->oem_table_id);
}
if (machine->nvdimms_state->is_enabled) {
nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index c2b9d62a35..694fc9ce07 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -84,6 +84,7 @@
#include "hw/i386/intel_iommu.h"
#include "hw/net/ne2000-isa.h"
#include "standard-headers/asm-x86/bootparam.h"
+#include "hw/virtio/virtio-iommu.h"
#include "hw/virtio/virtio-pmem-pci.h"
#include "hw/virtio/virtio-mem-pci.h"
#include "hw/mem/memory-device.h"
@@ -1388,6 +1389,12 @@ static void pc_machine_device_plug_cb(HotplugHandler
*hotplug_dev,
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
pc_virtio_md_pci_plug(hotplug_dev, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
+ PCMachineState *pcms = PC_MACHINE(hotplug_dev);
+ PCIDevice *pdev = PCI_DEVICE(dev);
+
+ pcms->virtio_iommu = true;
+ pcms->virtio_iommu_bdf = pci_get_bdf(pdev);
}
}
diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index ddedcef0b2..13db05d557 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -54,6 +54,7 @@ config PC_ACPI
select ACPI_X86
select ACPI_CPU_HOTPLUG
select ACPI_MEMORY_HOTPLUG
+ select ACPI_VIOT
select SMBUS_EEPROM
select PFLASH_CFI01
depends on ACPI_SMBUS
--
2.32.0
- [PATCH 0/6] virtio-iommu: Add ACPI support, Jean-Philippe Brucker, 2021/08/10
- [PATCH 1/6] acpi: Add VIOT structure definitions, Jean-Philippe Brucker, 2021/08/10
- [PATCH 3/6] hw/arm/virt-acpi-build: Add VIOT table for virtio-iommu, Jean-Philippe Brucker, 2021/08/10
- [PATCH 2/6] hw/acpi: Add VIOT table, Jean-Philippe Brucker, 2021/08/10
- [PATCH 4/6] hw/arm/virt: Remove device tree restriction for virtio-iommu, Jean-Philippe Brucker, 2021/08/10
- [PATCH 5/6] pc: Add VIOT table for virtio-iommu,
Jean-Philippe Brucker <=
- [PATCH 6/6] pc: Allow instantiating a virtio-iommu device, Jean-Philippe Brucker, 2021/08/10
- Re: [PATCH 0/6] virtio-iommu: Add ACPI support, Eric Auger, 2021/08/17