x86/EFI: retrieve PCI ROM contents not accessible through BARs

Linux 3.8-rc added code to do this, so we need to support this in the
hypervisor for Dom0 to be able to get at the same information as a
native kernel.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>

1 files changed, 219 insertions, 0 deletions

diff --git a/xen/include/efi/efipciio.h b/xen/include/efi/efipciio.h
new file mode 100644
index 0000000000..0724f957a3
--- /dev/null
+++ b/xen/include/efi/efipciio.h
@@ -0,0 +1,219 @@
+#ifndef _EFI_PCI_IO_H
+#define _EFI_PCI_IO_H
+
+#define EFI_PCI_IO_PROTOCOL \
+    { 0x4cf5b200, 0x68b8, 0x4ca5, {0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a} }
+
+INTERFACE_DECL(_EFI_PCI_IO);
+
+typedef enum {
+    EfiPciIoWidthUint8,
+    EfiPciIoWidthUint16,
+    EfiPciIoWidthUint32,
+    EfiPciIoWidthUint64,
+    EfiPciIoWidthFifoUint8,
+    EfiPciIoWidthFifoUint16,
+    EfiPciIoWidthFifoUint32,
+    EfiPciIoWidthFifoUint64,
+    EfiPciIoWidthFillUint8,
+    EfiPciIoWidthFillUint16,
+    EfiPciIoWidthFillUint32,
+    EfiPciIoWidthFillUint64,
+    EfiPciIoWidthMaximum
+} EFI_PCI_IO_PROTOCOL_WIDTH;
+
+#define EFI_PCI_IO_PASS_THROUGH_BAR 0xff
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_POLL_IO_MEM) (
+  IN struct _EFI_PCI_IO *This,
+  IN EFI_PCI_IO_PROTOCOL_WIDTH  Width,
+  IN UINT8                      BarIndex,
+  IN UINT64                     Offset,
+  IN UINT64                     Mask,
+  IN UINT64                     Value,
+  IN UINT64                     Delay,
+  OUT UINT64                    *Result
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_IO_MEM) (
+  IN struct _EFI_PCI_IO *This,
+  IN EFI_PCI_IO_PROTOCOL_WIDTH  Width,
+  IN UINT8                      BarIndex,
+  IN UINT64                     Offset,
+  IN UINTN                      Count,
+  IN OUT VOID                   *Buffer
+);
+
+typedef struct {
+  EFI_PCI_IO_PROTOCOL_IO_MEM    Read;
+  EFI_PCI_IO_PROTOCOL_IO_MEM    Write;
+} EFI_PCI_IO_PROTOCOL_ACCESS;
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_CONFIG) (
+  IN struct _EFI_PCI_IO *This,
+  IN EFI_PCI_IO_PROTOCOL_WIDTH  Width,
+  IN UINT32                     Offset,
+  IN UINTN                      Count,
+  IN OUT VOID                   *Buffer
+);
+
+typedef struct {
+  EFI_PCI_IO_PROTOCOL_CONFIG Read;
+  EFI_PCI_IO_PROTOCOL_CONFIG Write;
+} EFI_PCI_IO_PROTOCOL_CONFIG_ACCESS;
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_COPY_MEM) (
+  IN struct _EFI_PCI_IO *This,
+  IN EFI_PCI_IO_PROTOCOL_WIDTH  Width,
+  IN UINT8                      DestBarIndex,
+  IN UINT64                     DestOffset,
+  IN UINT8                      SrcBarIndex,
+  IN UINT64                     SrcOffset,
+  IN UINTN                      Count
+  );
+
+typedef enum {
+    EfiPciIoOperationBusMasterRead,
+    EfiPciIoOperationBusMasterWrite,
+    EfiPciIoOperationBusMasterCommonBuffer,
+    EfiPciIoOperationMaximum
+} EFI_PCI_IO_PROTOCOL_OPERATION;
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_MAP) (
+  IN struct _EFI_PCI_IO    *This,
+  IN EFI_PCI_IO_PROTOCOL_OPERATION Operation,
+  IN VOID                          *HostAddress,
+  IN OUT UINTN                     *NumberOfBytes,
+  OUT EFI_PHYSICAL_ADDRESS         *DeviceAddress,
+  OUT VOID                         **Mapping
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_UNMAP) (
+  IN struct _EFI_PCI_IO *This,
+  IN VOID                       *Mapping
+);
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_ALLOCATE_BUFFER) (
+  IN struct _EFI_PCI_IO *This,
+  IN EFI_ALLOCATE_TYPE          Type,
+  IN EFI_MEMORY_TYPE            MemoryType,
+  IN UINTN                      Pages,
+  OUT VOID                      **HostAddress,
+  IN UINT64                     Attributes
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_FREE_BUFFER) (
+  IN struct _EFI_PCI_IO *This,
+  IN UINTN                      Pages,
+  IN VOID                       *HostAddress
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_FLUSH) (
+  IN struct _EFI_PCI_IO *This
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_GET_LOCATION) (
+  IN struct _EFI_PCI_IO *This,
+  OUT UINTN                     *SegmentNumber,
+  OUT UINTN                     *BusNumber,
+  OUT UINTN                     *DeviceNumber,
+  OUT UINTN                     *FunctionNumber
+  );
+
+#define EFI_PCI_IO_ATTRIBUTE_ISA_IO               0x0002
+#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO       0x0004
+#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY           0x0008
+#define EFI_PCI_IO_ATTRIBUTE_VGA_IO               0x0010
+#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO       0x0020
+#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO     0x0040
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
+#define EFI_PCI_IO_ATTRIBUTE_IO                   0x0100
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY               0x0200
+#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER           0x0400
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED        0x0800
+#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE       0x1000
+#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE      0x2000
+#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM         0x4000
+#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE   0x8000
+#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16            0x10000
+#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16    0x20000
+#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16            0x40000
+
+typedef enum {
+    EfiPciIoAttributeOperationGet,
+    EfiPciIoAttributeOperationSet,
+    EfiPciIoAttributeOperationEnable,
+    EfiPciIoAttributeOperationDisable,
+    EfiPciIoAttributeOperationSupported,
+    EfiPciIoAttributeOperationMaximum
+} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_ATTRIBUTES) (
+  IN struct _EFI_PCI_IO             *This,
+  IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
+  IN UINT64                                  Attributes,
+  OUT UINT64                                 *Result OPTIONAL
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_GET_BAR_ATTRIBUTES) (
+  IN struct _EFI_PCI_IO *This,
+  IN UINT8                      BarIndex,
+  OUT UINT64                    *Supports OPTIONAL,
+  OUT VOID                      **Resources OPTIONAL
+  );
+
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCI_IO_PROTOCOL_SET_BAR_ATTRIBUTES) (
+  IN struct _EFI_PCI_IO *This,
+  IN UINT64                     Attributes,
+  IN UINT8                      BarIndex,
+  IN OUT UINT64                 *Offset,
+  IN OUT UINT64                 *Length
+  );
+
+typedef struct _EFI_PCI_IO {
+  EFI_PCI_IO_PROTOCOL_POLL_IO_MEM        PollMem;
+  EFI_PCI_IO_PROTOCOL_POLL_IO_MEM        PollIo;
+  EFI_PCI_IO_PROTOCOL_ACCESS             Mem;
+  EFI_PCI_IO_PROTOCOL_ACCESS             Io;
+  EFI_PCI_IO_PROTOCOL_CONFIG_ACCESS      Pci;
+  EFI_PCI_IO_PROTOCOL_COPY_MEM           CopyMem;
+  EFI_PCI_IO_PROTOCOL_MAP                Map;
+  EFI_PCI_IO_PROTOCOL_UNMAP              Unmap;
+  EFI_PCI_IO_PROTOCOL_ALLOCATE_BUFFER    AllocateBuffer;
+  EFI_PCI_IO_PROTOCOL_FREE_BUFFER        FreeBuffer;
+  EFI_PCI_IO_PROTOCOL_FLUSH              Flush;
+  EFI_PCI_IO_PROTOCOL_GET_LOCATION       GetLocation;
+  EFI_PCI_IO_PROTOCOL_ATTRIBUTES         Attributes;
+  EFI_PCI_IO_PROTOCOL_GET_BAR_ATTRIBUTES GetBarAttributes;
+  EFI_PCI_IO_PROTOCOL_SET_BAR_ATTRIBUTES SetBarAttributes;
+  UINT64                                 RomSize;
+  VOID                                   *RomImage;
+} EFI_PCI_IO;
+
+#endif /* _EFI_PCI_IO_H */