From 8deb3eb1461e4cb136c88d03ec5a6729ccf2f933 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 25 Oct 2013 16:26:02 -0400 Subject: xen/mcfg: Call PHYSDEVOP_pci_mmcfg_reserved for MCFG areas. The PCI MMCONFIG area is usually reserved via the E820 so the Xen hypervisor is aware of these regions. But they can also be enumerated in the ACPI DSDT which means the hypervisor won't know of them until the initial domain informs it of via PHYSDEVOP_pci_mmcfg_reserved. This is what this patch does for all of the MCFG regions that the initial domain is aware of (E820 enumerated and ACPI). Reported-by: Santosh Jodh CC: Jan Beulich Reviewed-by: Boris Ostrovsky CC: David Vrabel CC: Mukesh Rathor Signed-off-by: Konrad Rzeszutek Wilk [v1: Redid it a bit] [v2: Dropped the P2M 1-1 setting] [v3: Check for Xen in-case we are running under baremetal] [v4: Wrap with CONFIG_PCI_MMCONFIG] --- include/xen/interface/physdev.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/xen') diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h index 7000bb1f6e9..42721d13a10 100644 --- a/include/xen/interface/physdev.h +++ b/include/xen/interface/physdev.h @@ -231,6 +231,17 @@ struct physdev_get_free_pirq { #define XEN_PCI_DEV_VIRTFN 0x2 #define XEN_PCI_DEV_PXM 0x4 +#define XEN_PCI_MMCFG_RESERVED 0x1 + +#define PHYSDEVOP_pci_mmcfg_reserved 24 +struct physdev_pci_mmcfg_reserved { + uint64_t address; + uint16_t segment; + uint8_t start_bus; + uint8_t end_bus; + uint32_t flags; +}; + #define PHYSDEVOP_pci_device_add 25 struct physdev_pci_device_add { /* IN */ -- cgit v1.2.3-18-g5258