OvmfPkg/PvScsiDxe/PvScsi.h

   1 /** @file
   2
   3   Internal definitions for the PVSCSI driver, which produces Extended SCSI
   4   Pass Thru Protocol instances for pvscsi devices.
   5
   6   Copyright (C) 2020, Oracle and/or its affiliates.
   7
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef __PVSCSI_DXE_H_
  13 #define __PVSCSI_DXE_H_
  14
  15 #include <Library/DebugLib.h>
  16 #include <Protocol/ScsiPassThruExt.h>
  17
  18 typedef struct {
  19   EFI_PHYSICAL_ADDRESS DeviceAddress;
  20   VOID                 *Mapping;
  21 } PVSCSI_DMA_DESC;
  22
  23 typedef struct {
  24   PVSCSI_RINGS_STATE   *RingState;
  25   PVSCSI_DMA_DESC      RingStateDmaDesc;
  26
  27   PVSCSI_RING_REQ_DESC *RingReqs;
  28   PVSCSI_DMA_DESC      RingReqsDmaDesc;
  29
  30   PVSCSI_RING_CMP_DESC *RingCmps;
  31   PVSCSI_DMA_DESC      RingCmpsDmaDesc;
  32 } PVSCSI_RING_DESC;
  33
  34 #define PVSCSI_SIG SIGNATURE_32 ('P', 'S', 'C', 'S')
  35
  36 typedef struct {
  37   UINT32                          Signature;
  38   EFI_PCI_IO_PROTOCOL             *PciIo;
  39   UINT64                          OriginalPciAttributes;
  40   PVSCSI_RING_DESC                RingDesc;
  41   UINT8                           MaxTarget;
  42   UINT8                           MaxLun;
  43   EFI_EXT_SCSI_PASS_THRU_PROTOCOL PassThru;
  44   EFI_EXT_SCSI_PASS_THRU_MODE     PassThruMode;
  45 } PVSCSI_DEV;
  46
  47 #define PVSCSI_FROM_PASS_THRU(PassThruPointer) \
  48   CR (PassThruPointer, PVSCSI_DEV, PassThru, PVSCSI_SIG)
  49
  50 #endif // __PVSCSI_DXE_H_