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