From bd2baaccd521a9cfcc56e0a9a69c903fcee56aa4 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Fri, 30 Dec 2016 18:09:16 +0800 Subject: acpi: add ATSR for q35 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 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/acpi/acpi-defs.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/hw/acpi/acpi-defs.h') diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index d43ec005cb..4cc3630e61 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) -- cgit 1.4.1