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178 lines
8.8 KiB
C
178 lines
8.8 KiB
C
/** @file
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The AhciPei driver is used to manage ATA hard disk device working under AHCI
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mode at PEI phase.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _AHCI_PEI_PASSTHRU_H_
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#define _AHCI_PEI_PASSTHRU_H_
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/**
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Sends an ATA command to an ATA device that is attached to the ATA controller.
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@param[in] This The PPI instance pointer.
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@param[in] Port The port number of the ATA device to send
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the command.
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@param[in] PortMultiplierPort The port multiplier port number of the ATA
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device to send the command.
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If there is no port multiplier, then specify
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0xFFFF.
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@param[in,out] Packet A pointer to the ATA command to send to
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the ATA device specified by Port and
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PortMultiplierPort.
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@retval EFI_SUCCESS The ATA command was sent by the host. For
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bi-directional commands, InTransferLength bytes
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were transferred from InDataBuffer. For write
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and bi-directional commands, OutTransferLength
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bytes were transferred by OutDataBuffer.
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@retval EFI_NOT_FOUND The specified ATA device is not found.
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@retval EFI_INVALID_PARAMETER The contents of Acb are invalid. The ATA command
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was not sent, so no additional status information
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is available.
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@retval EFI_BAD_BUFFER_SIZE The ATA command was not executed. The number
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of bytes that could be transferred is returned
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in InTransferLength. For write and bi-directional
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commands, OutTransferLength bytes were transferred
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by OutDataBuffer.
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@retval EFI_NOT_READY The ATA command could not be sent because there
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are too many ATA commands already queued. The
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caller may retry again later.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting to
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send the ATA command.
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**/
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EFI_STATUS
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EFIAPI
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AhciAtaPassThruPassThru (
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IN EDKII_PEI_ATA_PASS_THRU_PPI *This,
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IN UINT16 Port,
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IN UINT16 PortMultiplierPort,
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IN OUT EFI_ATA_PASS_THRU_COMMAND_PACKET *Packet
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);
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/**
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Used to retrieve the list of legal port numbers for ATA devices on an ATA controller.
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These can either be the list of ports where ATA devices are actually present or the
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list of legal port numbers for the ATA controller. Regardless, the caller of this
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function must probe the port number returned to see if an ATA device is actually
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present at that location on the ATA controller.
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The GetNextPort() function retrieves the port number on an ATA controller. If on
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input Port is 0xFFFF, then the port number of the first port on the ATA controller
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is returned in Port and EFI_SUCCESS is returned.
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If Port is a port number that was returned on a previous call to GetNextPort(),
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then the port number of the next port on the ATA controller is returned in Port,
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and EFI_SUCCESS is returned. If Port is not 0xFFFF and Port was not returned on
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a previous call to GetNextPort(), then EFI_INVALID_PARAMETER is returned.
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If Port is the port number of the last port on the ATA controller, then EFI_NOT_FOUND
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is returned.
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@param[in] This The PPI instance pointer.
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@param[in,out] Port On input, a pointer to the port number on the ATA controller.
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On output, a pointer to the next port number on the ATA
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controller. An input value of 0xFFFF retrieves the first
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port number on the ATA controller.
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@retval EFI_SUCCESS The next port number on the ATA controller was
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returned in Port.
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@retval EFI_NOT_FOUND There are no more ports on this ATA controller.
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@retval EFI_INVALID_PARAMETER Port is not 0xFFFF and Port was not returned
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on a previous call to GetNextPort().
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**/
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EFI_STATUS
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EFIAPI
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AhciAtaPassThruGetNextPort (
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IN EDKII_PEI_ATA_PASS_THRU_PPI *This,
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IN OUT UINT16 *Port
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);
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/**
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Used to retrieve the list of legal port multiplier port numbers for ATA devices
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on a port of an ATA controller. These can either be the list of port multiplier
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ports where ATA devices are actually present on port or the list of legal port
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multiplier ports on that port. Regardless, the caller of this function must probe
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the port number and port multiplier port number returned to see if an ATA device
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is actually present.
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The GetNextDevice() function retrieves the port multiplier port number of an ATA
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device present on a port of an ATA controller.
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If PortMultiplierPort points to a port multiplier port number value that was
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returned on a previous call to GetNextDevice(), then the port multiplier port
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number of the next ATA device on the port of the ATA controller is returned in
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PortMultiplierPort, and EFI_SUCCESS is returned.
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If PortMultiplierPort points to 0xFFFF, then the port multiplier port number
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of the first ATA device on port of the ATA controller is returned in PortMultiplierPort
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and EFI_SUCCESS is returned.
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If PortMultiplierPort is not 0xFFFF and the value pointed to by PortMultiplierPort
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was not returned on a previous call to GetNextDevice(), then EFI_INVALID_PARAMETER
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is returned.
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If PortMultiplierPort is the port multiplier port number of the last ATA device
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on the port of the ATA controller, then EFI_NOT_FOUND is returned.
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@param[in] This The PPI instance pointer.
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@param[in] Port The port number present on the ATA controller.
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@param[in,out] PortMultiplierPort On input, a pointer to the port multiplier
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port number of an ATA device present on the
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ATA controller. If on input a PortMultiplierPort
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of 0xFFFF is specified, then the port multiplier
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port number of the first ATA device is returned.
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On output, a pointer to the port multiplier port
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number of the next ATA device present on an ATA
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controller.
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@retval EFI_SUCCESS The port multiplier port number of the next ATA
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device on the port of the ATA controller was
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returned in PortMultiplierPort.
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@retval EFI_NOT_FOUND There are no more ATA devices on this port of
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the ATA controller.
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@retval EFI_INVALID_PARAMETER PortMultiplierPort is not 0xFFFF, and PortMultiplierPort
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was not returned on a previous call to GetNextDevice().
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**/
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EFI_STATUS
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EFIAPI
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AhciAtaPassThruGetNextDevice (
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IN EDKII_PEI_ATA_PASS_THRU_PPI *This,
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IN UINT16 Port,
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IN OUT UINT16 *PortMultiplierPort
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);
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/**
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Gets the device path information of the underlying ATA host controller.
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@param[in] This The PPI instance pointer.
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@param[out] DevicePathLength The length of the device path in bytes specified
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by DevicePath.
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@param[out] DevicePath The device path of the underlying ATA host controller.
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This field re-uses EFI Device Path Protocol as
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defined by Section 10.2 EFI Device Path Protocol
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of UEFI 2.7 Specification.
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@retval EFI_SUCCESS The device path of the ATA host controller has
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been successfully returned.
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@retval EFI_INVALID_PARAMETER DevicePathLength or DevicePath is NULL.
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@retval EFI_OUT_OF_RESOURCES Not enough resource to return the device path.
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**/
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EFI_STATUS
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EFIAPI
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AhciAtaPassThruGetDevicePath (
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IN EDKII_PEI_ATA_PASS_THRU_PPI *This,
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OUT UINTN *DevicePathLength,
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OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
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);
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#endif
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