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87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/** @file
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Copyright (c) 2018, 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 _EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI_H_
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#define _EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI_H_
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#include <Protocol/DevicePath.h>
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///
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/// Global ID for the EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI.
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///
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#define EDKII_NVME_EXPRESS_HOST_CONTROLLER_PPI_GUID \
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{ \
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0xcae3aa63, 0x676f, 0x4da3, { 0xbd, 0x50, 0x6c, 0xc5, 0xed, 0xde, 0x9a, 0xad } \
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}
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//
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// Forward declaration for the EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI.
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//
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typedef struct _EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI;
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/**
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Get the MMIO base address of NVM Express host controller.
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@param[in] This The PPI instance pointer.
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@param[in] ControllerId The ID of the NVM Express host controller.
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@param[out] MmioBar The MMIO base address of the controller.
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@retval EFI_SUCCESS The operation succeeds.
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@retval EFI_INVALID_PARAMETER The parameters are invalid.
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@retval EFI_NOT_FOUND The specified NVM Express host controller not
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found.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_NVM_EXPRESS_HC_GET_MMIO_BAR) (
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IN EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI *This,
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IN UINT8 ControllerId,
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OUT UINTN *MmioBar
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);
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/**
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Get the device path of NVM Express host controller.
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@param[in] This The PPI instance pointer.
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@param[in] ControllerId The ID of the NVM Express host controller.
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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 NVM Express 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 The parameters are invalid.
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@retval EFI_NOT_FOUND The specified NVM Express host controller not
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found.
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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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typedef
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EFI_STATUS
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(EFIAPI *EDKII_NVM_EXPRESS_HC_GET_DEVICE_PATH) (
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IN EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI *This,
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IN UINT8 ControllerId,
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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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// This PPI contains a set of services to interact with the NVM Express host
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// controller.
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//
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struct _EDKII_NVM_EXPRESS_HOST_CONTROLLER_PPI {
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EDKII_NVM_EXPRESS_HC_GET_MMIO_BAR GetNvmeHcMmioBar;
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EDKII_NVM_EXPRESS_HC_GET_DEVICE_PATH GetNvmeHcDevicePath;
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};
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extern EFI_GUID gEdkiiPeiNvmExpressHostControllerPpiGuid;
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#endif
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