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[Qemu-devel] [PULL 10/41] acpi: add ATSR for q35
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 10/41] acpi: add ATSR for q35 |
Date: |
Tue, 10 Jan 2017 07:39:46 +0200 |
From: Jason Wang <address@hidden>
This patch provides ATSR which was a requirement for software that
wants to enable ATS on endpoint devices behind a Root Port. This is
done simply by setting ALL_PORTS which indicates all PCI-Express Root
Ports support ATS transactions.
Signed-off-by: Jason Wang <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
include/hw/acpi/acpi-defs.h | 12 ++++++++++++
hw/i386/acpi-build.c | 9 +++++++++
2 files changed, 21 insertions(+)
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index d43ec00..4cc3630 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -627,8 +627,20 @@ struct AcpiDmarHardwareUnit {
} QEMU_PACKED;
typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit;
+/* Type 2: Root Port ATS Capability Reporting Structure */
+struct AcpiDmarRootPortATS {
+ uint16_t type;
+ uint16_t length;
+ uint8_t flags;
+ uint8_t reserved;
+ uint16_t pci_segment;
+ AcpiDmarDeviceScope scope[0];
+} QEMU_PACKED;
+typedef struct AcpiDmarRootPortATS AcpiDmarRootPortATS;
+
/* Masks for Flags field above */
#define ACPI_DMAR_INCLUDE_PCI_ALL 1
+#define ACPI_DMAR_ATSR_ALL_PORTS 1
/*
* Input Output Remapping Table (IORT)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 42ecf61..4609db1 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2575,6 +2575,7 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
AcpiTableDmar *dmar;
AcpiDmarHardwareUnit *drhd;
+ AcpiDmarRootPortATS *atsr;
uint8_t dmar_flags = 0;
X86IOMMUState *iommu = x86_iommu_get_default();
AcpiDmarDeviceScope *scope = NULL;
@@ -2608,6 +2609,14 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC);
scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC);
+ if (iommu->dt_supported) {
+ atsr = acpi_data_push(table_data, sizeof(*atsr));
+ atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR);
+ atsr->length = cpu_to_le16(sizeof(*atsr));
+ atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS;
+ atsr->pci_segment = cpu_to_le16(0);
+ }
+
build_header(linker, table_data, (void *)(table_data->data + dmar_start),
"DMAR", table_data->len - dmar_start, 1, NULL, NULL);
}
--
MST
- Re: [Qemu-devel] [PULL 04/41] virtio: convert to use DMA api, (continued)
[Qemu-devel] [PULL 09/41] virtio-pci: address space translation service (ATS) support, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 10/41] acpi: add ATSR for q35,
Michael S. Tsirkin <=
[Qemu-devel] [PULL 11/41] memory: handle alias for iommu notifier, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 12/41] memory: handle alias in memory_region_is_iommu(), Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 13/41] doc/pcie: correct command line examples, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 14/41] virtio-crypto: use the correct length for cipher operation, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 15/41] cryptodev: introduce a new is_used property, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 16/41] cryptodev: wrap the ready flag, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 17/41] virtio-crypto-pci: add check for cryptodev object, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 18/41] virtio-crypto: avoid one cryptodev device is used by multiple virtio crypto devices, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 19/41] virtio-crypto-pci: tag virtio-crypto device hot pluggable, Michael S. Tsirkin, 2017/01/10
[Qemu-devel] [PULL 20/41] virtio-crypto: zeroize the key material before free, Michael S. Tsirkin, 2017/01/10