--- /dev/null
+/** @file\r
+\r
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>\r
+ This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#ifndef _EDKII_ATA_PASS_THRU_PPI_H_\r
+#define _EDKII_ATA_PASS_THRU_PPI_H_\r
+\r
+#include <Protocol/DevicePath.h>\r
+#include <Protocol/AtaPassThru.h>\r
+\r
+///\r
+/// Global ID for the EDKII_PEI_ATA_PASS_THRU_PPI.\r
+///\r
+#define EDKII_PEI_ATA_PASS_THRU_PPI_GUID \\r
+ { \\r
+ 0xa16473fd, 0xd474, 0x4c89, { 0xae, 0xc7, 0x90, 0xb8, 0x3c, 0x73, 0x86, 0x9 } \\r
+ }\r
+\r
+//\r
+// Forward declaration for the EDKII_PEI_ATA_PASS_THRU_PPI.\r
+//\r
+typedef struct _EDKII_PEI_ATA_PASS_THRU_PPI EDKII_PEI_ATA_PASS_THRU_PPI;\r
+\r
+//\r
+// Revision The revision to which the ATA Pass Thru PPI interface adheres.\r
+// All future revisions must be backwards compatible.\r
+// If a future version is not back wards compatible it is not the same GUID.\r
+//\r
+#define EDKII_PEI_ATA_PASS_THRU_PPI_REVISION 0x00010000\r
+\r
+\r
+/**\r
+ Sends an ATA command to an ATA device that is attached to the ATA controller.\r
+\r
+ @param[in] This The PPI instance pointer.\r
+ @param[in] Port The port number of the ATA device to send\r
+ the command.\r
+ @param[in] PortMultiplierPort The port multiplier port number of the ATA\r
+ device to send the command.\r
+ If there is no port multiplier, then specify\r
+ 0xFFFF.\r
+ @param[in,out] Packet A pointer to the ATA command to send to\r
+ the ATA device specified by Port and\r
+ PortMultiplierPort.\r
+\r
+ @retval EFI_SUCCESS The ATA command was sent by the host. For\r
+ bi-directional commands, InTransferLength bytes\r
+ were transferred from InDataBuffer. For write\r
+ and bi-directional commands, OutTransferLength\r
+ bytes were transferred by OutDataBuffer.\r
+ @retval EFI_NOT_FOUND The specified ATA device is not found.\r
+ @retval EFI_INVALID_PARAMETER The contents of Acb are invalid. The ATA command\r
+ was not sent, so no additional status information\r
+ is available.\r
+ @retval EFI_BAD_BUFFER_SIZE The ATA command was not executed. The number\r
+ of bytes that could be transferred is returned\r
+ in InTransferLength. For write and bi-directional\r
+ commands, OutTransferLength bytes were transferred\r
+ by OutDataBuffer.\r
+ @retval EFI_NOT_READY The ATA command could not be sent because there\r
+ are too many ATA commands already queued. The\r
+ caller may retry again later.\r
+ @retval EFI_DEVICE_ERROR A device error occurred while attempting to\r
+ send the ATA command.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_ATA_PASS_THRU_PASSTHRU) (\r
+ IN EDKII_PEI_ATA_PASS_THRU_PPI *This,\r
+ IN UINT16 Port,\r
+ IN UINT16 PortMultiplierPort,\r
+ IN OUT EFI_ATA_PASS_THRU_COMMAND_PACKET *Packet\r
+ );\r
+\r
+/**\r
+ Used to retrieve the list of legal port numbers for ATA devices on an ATA controller.\r
+ These can either be the list of ports where ATA devices are actually present or the\r
+ list of legal port numbers for the ATA controller. Regardless, the caller of this\r
+ function must probe the port number returned to see if an ATA device is actually\r
+ present at that location on the ATA controller.\r
+\r
+ The GetNextPort() function retrieves the port number on an ATA controller. If on\r
+ input Port is 0xFFFF, then the port number of the first port on the ATA controller\r
+ is returned in Port and EFI_SUCCESS is returned.\r
+\r
+ If Port is a port number that was returned on a previous call to GetNextPort(),\r
+ then the port number of the next port on the ATA controller is returned in Port,\r
+ and EFI_SUCCESS is returned. If Port is not 0xFFFF and Port was not returned on\r
+ a previous call to GetNextPort(), then EFI_INVALID_PARAMETER is returned.\r
+\r
+ If Port is the port number of the last port on the ATA controller, then EFI_NOT_FOUND\r
+ is returned.\r
+\r
+ @param[in] This The PPI instance pointer.\r
+ @param[in,out] Port On input, a pointer to the port number on the ATA controller.\r
+ On output, a pointer to the next port number on the ATA\r
+ controller. An input value of 0xFFFF retrieves the first\r
+ port number on the ATA controller.\r
+\r
+ @retval EFI_SUCCESS The next port number on the ATA controller was\r
+ returned in Port.\r
+ @retval EFI_NOT_FOUND There are no more ports on this ATA controller.\r
+ @retval EFI_INVALID_PARAMETER Port is not 0xFFFF and Port was not returned\r
+ on a previous call to GetNextPort().\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_ATA_PASS_THRU_THRU_GET_NEXT_PORT) (\r
+ IN EDKII_PEI_ATA_PASS_THRU_PPI *This,\r
+ IN OUT UINT16 *Port\r
+ );\r
+\r
+/**\r
+ Used to retrieve the list of legal port multiplier port numbers for ATA devices\r
+ on a port of an ATA controller. These can either be the list of port multiplier\r
+ ports where ATA devices are actually present on port or the list of legal port\r
+ multiplier ports on that port. Regardless, the caller of this function must probe\r
+ the port number and port multiplier port number returned to see if an ATA device\r
+ is actually present.\r
+\r
+ The GetNextDevice() function retrieves the port multiplier port number of an ATA\r
+ device present on a port of an ATA controller.\r
+\r
+ If PortMultiplierPort points to a port multiplier port number value that was\r
+ returned on a previous call to GetNextDevice(), then the port multiplier port\r
+ number of the next ATA device on the port of the ATA controller is returned in\r
+ PortMultiplierPort, and EFI_SUCCESS is returned.\r
+\r
+ If PortMultiplierPort points to 0xFFFF, then the port multiplier port number\r
+ of the first ATA device on port of the ATA controller is returned in PortMultiplierPort\r
+ and EFI_SUCCESS is returned.\r
+\r
+ If PortMultiplierPort is not 0xFFFF and the value pointed to by PortMultiplierPort\r
+ was not returned on a previous call to GetNextDevice(), then EFI_INVALID_PARAMETER\r
+ is returned.\r
+\r
+ If PortMultiplierPort is the port multiplier port number of the last ATA device\r
+ on the port of the ATA controller, then EFI_NOT_FOUND is returned.\r
+\r
+ @param[in] This The PPI instance pointer.\r
+ @param[in] Port The port number present on the ATA controller.\r
+ @param[in,out] PortMultiplierPort On input, a pointer to the port multiplier\r
+ port number of an ATA device present on the\r
+ ATA controller. If on input a PortMultiplierPort\r
+ of 0xFFFF is specified, then the port multiplier\r
+ port number of the first ATA device is returned.\r
+ On output, a pointer to the port multiplier port\r
+ number of the next ATA device present on an ATA\r
+ controller.\r
+\r
+ @retval EFI_SUCCESS The port multiplier port number of the next ATA\r
+ device on the port of the ATA controller was\r
+ returned in PortMultiplierPort.\r
+ @retval EFI_NOT_FOUND There are no more ATA devices on this port of\r
+ the ATA controller.\r
+ @retval EFI_INVALID_PARAMETER PortMultiplierPort is not 0xFFFF, and PortMultiplierPort\r
+ was not returned on a previous call to GetNextDevice().\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_ATA_PASS_THRU_GET_NEXT_DEVICE) (\r
+ IN EDKII_PEI_ATA_PASS_THRU_PPI *This,\r
+ IN UINT16 Port,\r
+ IN OUT UINT16 *PortMultiplierPort\r
+ );\r
+\r
+/**\r
+ Gets the device path information of the underlying ATA host controller.\r
+\r
+ @param[in] This The PPI instance pointer.\r
+ @param[out] DevicePathLength The length of the device path in bytes specified\r
+ by DevicePath.\r
+ @param[out] DevicePath The device path of the underlying ATA host controller.\r
+ This field re-uses EFI Device Path Protocol as\r
+ defined by Section 10.2 EFI Device Path Protocol\r
+ of UEFI 2.7 Specification.\r
+\r
+ @retval EFI_SUCCESS The device path of the ATA host controller has\r
+ been successfully returned.\r
+ @retval EFI_INVALID_PARAMETER DevicePathLength or DevicePath is NULL.\r
+ @retval EFI_OUT_OF_RESOURCES Not enough resource to return the device path.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_ATA_PASS_THRU_GET_DEVICE_PATH) (\r
+ IN EDKII_PEI_ATA_PASS_THRU_PPI *This,\r
+ OUT UINTN *DevicePathLength,\r
+ OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r
+ );\r
+\r
+//\r
+// EDKII_PEI_ATA_PASS_THRU_PPI provides the services that are required to send\r
+// ATA commands to an ATA device during PEI.\r
+//\r
+struct _EDKII_PEI_ATA_PASS_THRU_PPI {\r
+ UINT64 Revision;\r
+ EFI_ATA_PASS_THRU_MODE *Mode;\r
+ EDKII_PEI_ATA_PASS_THRU_PASSTHRU PassThru;\r
+ EDKII_PEI_ATA_PASS_THRU_THRU_GET_NEXT_PORT GetNextPort;\r
+ EDKII_PEI_ATA_PASS_THRU_GET_NEXT_DEVICE GetNextDevice;\r
+ EDKII_PEI_ATA_PASS_THRU_GET_DEVICE_PATH GetDevicePath;\r
+};\r
+\r
+extern EFI_GUID gEdkiiPeiAtaPassThruPpiGuid;\r
+\r
+#endif\r
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