OvmfPkg/LsiScsiDxe: Examine the incoming SCSI Request Packet

[mirror_edk2.git] / OvmfPkg / LsiScsiDxe / LsiScsi.h

/** @file\r
\r
  Internal definitions for the LSI 53C895A SCSI driver, which produces\r
  Extended SCSI Pass Thru Protocol instances for LSI 53C895A SCSI devices.\r
\r
  Copyright (C) 2020, SUSE LLC.\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#ifndef _LSI_SCSI_DXE_H_\r
#define _LSI_SCSI_DXE_H_\r
\r
typedef struct {\r
  //\r
  // The max size of CDB is 32.\r
  //\r
  UINT8                           Cdb[32];\r
  //\r
  // Allocate 64KB for read/write buffer. It seems sufficient for the common\r
  // boot scenarios.\r
  //\r
  // NOTE: The number of bytes for data transmission is bounded by DMA Byte\r
  //       Count (DBC), a 24-bit register, so the maximum is 0xFFFFFF (16MB-1).\r
  //\r
  UINT8                           Data[SIZE_64KB];\r
} LSI_SCSI_DMA_BUFFER;\r
\r
typedef struct {\r
  UINT32                          Signature;\r
  UINT64                          OrigPciAttrs;\r
  EFI_EVENT                       ExitBoot;\r
  EFI_PCI_IO_PROTOCOL             *PciIo;\r
  UINT8                           MaxTarget;\r
  UINT8                           MaxLun;\r
  LSI_SCSI_DMA_BUFFER             *Dma;\r
  EFI_PHYSICAL_ADDRESS            DmaPhysical;\r
  VOID                            *DmaMapping;\r
  EFI_EXT_SCSI_PASS_THRU_MODE     PassThruMode;\r
  EFI_EXT_SCSI_PASS_THRU_PROTOCOL PassThru;\r
} LSI_SCSI_DEV;\r
\r
#define LSI_SCSI_DEV_SIGNATURE SIGNATURE_32 ('L','S','I','S')\r
\r
#define LSI_SCSI_FROM_PASS_THRU(PassThruPtr) \\r
  CR (PassThruPtr, LSI_SCSI_DEV, PassThru, LSI_SCSI_DEV_SIGNATURE)\r
\r
\r
//\r
// Probe, start and stop functions of this driver, called by the DXE core for\r
// specific devices.\r
//\r
// The following specifications document these interfaces:\r
// - Driver Writer's Guide for UEFI 2.3.1 v1.01, 9 Driver Binding Protocol\r
// - UEFI Spec 2.3.1 + Errata C, 10.1 EFI Driver Binding Protocol\r
//\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiControllerSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
  IN EFI_HANDLE                  ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath OPTIONAL\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiControllerStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
  IN EFI_HANDLE                  ControllerHandle,\r
  IN EFI_DEVICE_PATH_PROTOCOL    *RemainingDevicePath OPTIONAL\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiControllerStop (\r
  IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
  IN EFI_HANDLE                  ControllerHandle,\r
  IN UINTN                       NumberOfChildren,\r
  IN EFI_HANDLE                  *ChildHandleBuffer\r
  );\r
\r
\r
//\r
// The next seven functions implement EFI_EXT_SCSI_PASS_THRU_PROTOCOL\r
// for the LSI 53C895A SCSI Controller. Refer to UEFI Spec 2.3.1 + Errata C,\r
// sections\r
// - 14.1 SCSI Driver Model Overview,\r
// - 14.7 Extended SCSI Pass Thru Protocol.\r
//\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiPassThru (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL                *This,\r
  IN UINT8                                          *Target,\r
  IN UINT64                                         Lun,\r
  IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r
  IN EFI_EVENT                                      Event     OPTIONAL\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiGetNextTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
  IN OUT UINT8                       **TargetPointer,\r
  IN OUT UINT64                      *Lun\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiBuildDevicePath (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
  IN UINT8                           *Target,\r
  IN UINT64                          Lun,\r
  IN OUT EFI_DEVICE_PATH_PROTOCOL    **DevicePath\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiGetTargetLun (\r
  IN  EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
  IN  EFI_DEVICE_PATH_PROTOCOL        *DevicePath,\r
  OUT UINT8                           **TargetPointer,\r
  OUT UINT64                          *Lun\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiResetChannel (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiResetTargetLun (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
  IN UINT8                           *Target,\r
  IN UINT64                          Lun\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiGetNextTarget (\r
  IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
  IN OUT UINT8                       **TargetPointer\r
  );\r
\r
\r
//\r
// The purpose of the following scaffolding (EFI_COMPONENT_NAME_PROTOCOL and\r
// EFI_COMPONENT_NAME2_PROTOCOL implementation) is to format the driver's name\r
// in English, for display on standard console devices. This is recommended for\r
// UEFI drivers that follow the UEFI Driver Model. Refer to the Driver Writer's\r
// Guide for UEFI 2.3.1 v1.01, 11 UEFI Driver and Controller Names.\r
//\r
// Device type names ("LSI 53C895A SCSI Controller") are not formatted because\r
// the driver supports only that device type. Therefore the driver name\r
// suffices for unambiguous identification.\r
//\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiGetDriverName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL *This,\r
  IN  CHAR8                       *Language,\r
  OUT CHAR16                      **DriverName\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
LsiScsiGetDeviceName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL *This,\r
  IN  EFI_HANDLE                  DeviceHandle,\r
  IN  EFI_HANDLE                  ChildHandle,\r
  IN  CHAR8                       *Language,\r
  OUT CHAR16                      **ControllerName\r
  );\r
\r
#endif // _LSI_SCSI_DXE_H_\r