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162 lines
8.4 KiB
C++
162 lines
8.4 KiB
C++
/** @file
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The NvmExpressPei driver is used to manage non-volatile memory subsystem
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which follows NVM Express specification at PEI phase.
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Copyright (c) 2018 - 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 _NVM_EXPRESS_PEI_PASSTHRU_H_
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#define _NVM_EXPRESS_PEI_PASSTHRU_H_
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/**
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Sends an NVM Express Command Packet to an NVM Express controller or namespace. This function only
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supports blocking execution of the command.
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@param[in] Private The pointer to the NVME_CONTEXT Data structure.
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@param[in] NamespaceId Is a 32 bit Namespace ID to which the Express HCI command packet will
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be sent.
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A Value of 0 denotes the NVM Express controller, a Value of all 0FFh in
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the namespace ID specifies that the command packet should be sent to all
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valid namespaces.
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@param[in,out] Packet A pointer to the EDKII PEI NVM Express PassThru Command Packet to send
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to the NVMe namespace specified by NamespaceId.
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@retval EFI_SUCCESS The EDKII PEI NVM Express Command Packet was sent by the host.
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TransferLength bytes were transferred to, or from DataBuffer.
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@retval EFI_NOT_READY The EDKII PEI NVM Express Command Packet could not be sent because
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the controller is not ready. The caller may retry again later.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the EDKII PEI NVM
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Express Command Packet.
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@retval EFI_INVALID_PARAMETER Namespace, or the contents of EDKII_PEI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET
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are invalid.
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The EDKII PEI NVM Express Command Packet was not sent, so no
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additional status information is available.
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@retval EFI_UNSUPPORTED The command described by the EDKII PEI NVM Express Command Packet
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is not supported by the host adapter.
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The EDKII PEI NVM Express Command Packet was not sent, so no
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additional status information is available.
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@retval EFI_TIMEOUT A timeout occurred while waiting for the EDKII PEI NVM Express Command
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Packet to execute.
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**/
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EFI_STATUS
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NvmePassThruExecute (
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IN PEI_NVME_CONTROLLER_PRIVATE_DATA *Private,
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IN UINT32 NamespaceId,
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IN OUT EFI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET *Packet
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);
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/**
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Gets the device path information of the underlying NVM Express 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 NVM Express
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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 operation succeeds.
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@retval EFI_INVALID_PARAMETER DevicePathLength or DevicePath is NULL.
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@retval EFI_OUT_OF_RESOURCES The operation fails due to lack of resources.
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**/
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EFI_STATUS
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EFIAPI
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NvmePassThruGetDevicePath (
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IN EDKII_PEI_NVM_EXPRESS_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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/**
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Used to retrieve the next namespace ID for this NVM Express controller.
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If on input the value pointed to by NamespaceId is 0xFFFFFFFF, then the first
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valid namespace ID defined on the NVM Express controller is returned in the
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location pointed to by NamespaceId and a status of EFI_SUCCESS is returned.
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If on input the value pointed to by NamespaceId is an invalid namespace ID
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other than 0xFFFFFFFF, then EFI_INVALID_PARAMETER is returned.
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If on input the value pointed to by NamespaceId is a valid namespace ID, then
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the next valid namespace ID on the NVM Express controller is returned in the
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location pointed to by NamespaceId, and EFI_SUCCESS is returned.
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If the value pointed to by NamespaceId is the namespace ID of the last
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namespace on the NVM Express controller, then EFI_NOT_FOUND is returned.
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@param[in] This The PPI instance pointer.
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@param[in,out] NamespaceId On input, a pointer to a legal NamespaceId
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for an NVM Express namespace present on the
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NVM Express controller. On output, a pointer
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to the next NamespaceId of an NVM Express
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namespace on an NVM Express controller. An
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input value of 0xFFFFFFFF retrieves the
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first NamespaceId for an NVM Express
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namespace present on an NVM Express
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controller.
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@retval EFI_SUCCESS The Namespace ID of the next Namespace was
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returned.
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@retval EFI_NOT_FOUND There are no more namespaces defined on this
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controller.
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@retval EFI_INVALID_PARAMETER NamespaceId is an invalid value other than
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0xFFFFFFFF.
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**/
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EFI_STATUS
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EFIAPI
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NvmePassThruGetNextNameSpace (
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IN EDKII_PEI_NVM_EXPRESS_PASS_THRU_PPI *This,
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IN OUT UINT32 *NamespaceId
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);
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/**
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Sends an NVM Express Command Packet to an NVM Express controller or namespace. This function only
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supports blocking execution of the command.
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@param[in] This The PPI instance pointer.
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@param[in] NamespaceId Is a 32 bit Namespace ID to which the Nvm Express command packet will
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be sent.
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A Value of 0 denotes the NVM Express controller, a Value of all 0FFh in
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the namespace ID specifies that the command packet should be sent to all
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valid namespaces.
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@param[in,out] Packet A pointer to the EDKII PEI NVM Express PassThru Command Packet to send
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to the NVMe namespace specified by NamespaceId.
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@retval EFI_SUCCESS The EDKII PEI NVM Express Command Packet was sent by the host.
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TransferLength bytes were transferred to, or from DataBuffer.
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@retval EFI_NOT_READY The EDKII PEI NVM Express Command Packet could not be sent because
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the controller is not ready. The caller may retry again later.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the EDKII PEI NVM
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Express Command Packet.
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@retval EFI_INVALID_PARAMETER Namespace, or the contents of EDKII_PEI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET
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are invalid.
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The EDKII PEI NVM Express Command Packet was not sent, so no
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additional status information is available.
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@retval EFI_UNSUPPORTED The command described by the EDKII PEI NVM Express Command Packet
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is not supported by the host adapter.
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The EDKII PEI NVM Express Command Packet was not sent, so no
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additional status information is available.
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@retval EFI_TIMEOUT A timeout occurred while waiting for the EDKII PEI NVM Express Command
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Packet to execute.
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**/
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EFI_STATUS
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EFIAPI
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NvmePassThru (
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IN EDKII_PEI_NVM_EXPRESS_PASS_THRU_PPI *This,
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IN UINT32 NamespaceId,
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IN OUT EFI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET *Packet
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);
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#endif
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