[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH RFC 06/18] OvmfPkg: Introduce Xenbus Protocol.
This protocol will be used for communication between a PV driver (like a PV block driver) and the Xenbus/Xenstore. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx> --- OvmfPkg/Include/Protocol/Xenbus.h | 62 +++++++++++++++++++++++++++++++++++++++ OvmfPkg/OvmfPkg.dec | 2 ++ OvmfPkg/XenbusDxe/ComponentName.c | 12 ++++++++ OvmfPkg/XenbusDxe/XenbusDxe.h | 3 ++ OvmfPkg/XenbusDxe/XenbusDxe.inf | 1 + 5 files changed, 80 insertions(+) create mode 100644 OvmfPkg/Include/Protocol/Xenbus.h diff --git a/OvmfPkg/Include/Protocol/Xenbus.h b/OvmfPkg/Include/Protocol/Xenbus.h new file mode 100644 index 0000000..191cee1 --- /dev/null +++ b/OvmfPkg/Include/Protocol/Xenbus.h @@ -0,0 +1,62 @@ + +/** @file + TODO: Brief Description of Protocol Xenbus + + TODO: Detailed Description of Protocol Xenbus + + TODO: Copyright for Protocol Xenbus + + TODO: License for Protocol Xenbus + +**/ + +#ifndef __PROTOCOL_XENBUS_H__ +#define __PROTOCOL_XENBUS_H__ + +#define XENBUS_PROTOCOL_GUID \ + {0x3d3ca290, 0xb9a5, 0x11e3, {0xb7, 0x5d, 0xb8, 0xac, 0x6f, 0x7d, 0x65, 0xe6}} + +/// +/// Forward declaration +/// +typedef struct _XENBUS_PROTOCOL XENBUS_PROTOCOL; + + +#include <IndustryStandard/Xen/grant_table.h> + +/// +/// Function prototypes +/// + +typedef +EFI_STATUS +(EFIAPI *XENBUS_GRANT_ACCESS)( + IN XENBUS_PROTOCOL *This, + IN domid_t DomainId, + IN UINTN Frame, + IN BOOLEAN ReadOnly, + OUT grant_ref_t *refp + ); + +typedef +EFI_STATUS +(EFIAPI *XENBUS_GRANT_END_ACCESS)( + IN XENBUS_PROTOCOL *This, + IN grant_ref_t Ref + ); + + +/// +/// Protocol structure +/// +struct _XENBUS_PROTOCOL { + XENBUS_GRANT_ACCESS GrantAccess; + XENBUS_GRANT_END_ACCESS GrantEndAccess; + // + // Place protocol data fields here + // +}; + +extern EFI_GUID gXenbusProtocolGuid; + +#endif diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index f829247..095d40a 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -47,6 +47,8 @@ [Protocols] gVirtioDeviceProtocolGuid = {0xfa920010, 0x6785, 0x4941, {0xb6, 0xec, 0x49, 0x8c, 0x57, 0x9f, 0x16, 0x0a}} gBlockMmioProtocolGuid = {0x6b558ce3, 0x69e5, 0x4c67, {0xa6, 0x34, 0xf7, 0xfe, 0x72, 0xad, 0xbe, 0x84}} + ## Include/Protocol/Xenbus.h + gXenbusProtocolGuid = {0x3d3ca290, 0xb9a5, 0x11e3, {0xb7, 0x5d, 0xb8, 0xac, 0x6f, 0x7d, 0x65, 0xe6}} [PcdsFixedAtBuild] gUefiOvmfPkgTokenSpaceGuid.PcdOvmfPeiMemFvBase|0x0|UINT32|0 diff --git a/OvmfPkg/XenbusDxe/ComponentName.c b/OvmfPkg/XenbusDxe/ComponentName.c index 2cf11b5..fd46cc8 100644 --- a/OvmfPkg/XenbusDxe/ComponentName.c +++ b/OvmfPkg/XenbusDxe/ComponentName.c @@ -140,6 +140,18 @@ XenbusDxeComponentNameGetControllerName ( } // + // Make sure this driver is currently managing ControllerHandle + // + Status = EfiTestManagedDevice ( + ControllerHandle, + gXenbusDxeDriverBinding.DriverBindingHandle, + &gXenbusProtocolGuid + ); + if (EFI_ERROR (Status)) { + return Status; + } + + // // Lookup name of controller specified by ControllerHandle // Status = EFI_UNSUPPORTED; diff --git a/OvmfPkg/XenbusDxe/XenbusDxe.h b/OvmfPkg/XenbusDxe/XenbusDxe.h index d57e3c8..975fb6b 100644 --- a/OvmfPkg/XenbusDxe/XenbusDxe.h +++ b/OvmfPkg/XenbusDxe/XenbusDxe.h @@ -42,6 +42,9 @@ // // Produced Protocols // +// Xen interface version used: +#define __XEN_INTERFACE_VERSION__ 0x00040400 +#include <Protocol/Xenbus.h> // diff --git a/OvmfPkg/XenbusDxe/XenbusDxe.inf b/OvmfPkg/XenbusDxe/XenbusDxe.inf index 8b69f93..1a6b131 100644 --- a/OvmfPkg/XenbusDxe/XenbusDxe.inf +++ b/OvmfPkg/XenbusDxe/XenbusDxe.inf @@ -55,6 +55,7 @@ gEfiPciIoProtocolGuid gEfiComponentName2ProtocolGuid gEfiComponentNameProtocolGuid + gXenbusProtocolGuid [Guids] -- Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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