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/** @file
NvmExpressDxe driver is used to manage non-volatile memory subsystem which follows
NVM Express specification.
Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _NVM_EXPRESS_PASS_THRU_H_
#define _NVM_EXPRESS_PASS_THRU_H_
#define NVM_EXPRESS_PASS_THRU_PROTOCOL_GUID \
{ \
0xec51ef5c, 0x2cf3, 0x4a55, {0xbf, 0x85, 0xb6, 0x3c, 0xa3, 0xb1, 0x3f, 0x44 } \
}
typedef struct _NVM_EXPRESS_PASS_THRU_PROTOCOL NVM_EXPRESS_PASS_THRU_PROTOCOL;
typedef struct {
UINT32 AdapterId;
UINT32 Attributes;
UINT32 IoAlign;
UINT32 HciVersion;
UINT64 Timeout;
UINT32 MaxNamespace;
} NVM_EXPRESS_PASS_THRU_MODE;
//
// If this bit is set, then the NVM_EXPRESS_PASS_THRU_PROTOCOL interface is for directly addressable namespaces.
//
#define NVM_EXPRESS_PASS_THRU_ATTRIBUTES_PHYSICAL 0x0001
//
// If this bit is set, then the NVM_EXPRESS_PASS_THRU_PROTOCOL interface is for a single volume logical namespace
// comprised of multiple namespaces.
//
#define NVM_EXPRESS_PASS_THRU_ATTRIBUTES_LOGICAL 0x0002
//
// If this bit is set, then the NVM_EXPRESS_PASS_THRU_PROTOCOL interface supports non blocking I/O.
//
#define NVM_EXPRESS_PASS_THRU_ATTRIBUTES_NONBLOCKIO 0x0004
//
// If this bit is set, then the NVM_EXPRESS_PASS_THRU_PROTOCOL interface supports NVM command set commands.
//
#define NVM_EXPRESS_PASS_THRU_ATTRIBUTES_CMD_SET_NVME 0x0008
//
// QueueId
//
#define NVME_ADMIN_QUEUE 0x00
#define NVME_IO_QUEUE 0x01
//
// ControllerStatus
//
#define NVM_EXPRESS_STATUS_CONTROLLER_READY 0x00
#define NVM_EXPRESS_STATUS_CONTROLLER_CMD_ERROR 0x01
#define NVM_EXPRESS_STATUS_CONTROLLER_FATAL 0x02
#define NVM_EXPRESS_STATUS_CONTROLLER_CMD_DATA_ERROR 0x04
#define NVM_EXPRESS_STATUS_CONTROLLER_CMD_ABORT 0x05
#define NVM_EXPRESS_STATUS_CONTROLLER_DEVICE_ERROR 0x06
#define NVM_EXPRESS_STATUS_CONTROLLER_TIMEOUT_COMMAND 0x09
#define NVM_EXPRESS_STATUS_CONTROLLER_INVALID_NAMESPACE 0x0B
#define NVM_EXPRESS_STATUS_CONTROLLER_NOT_READY 0x0C
#define NVM_EXPRESS_STATUS_CONTROLLER_OTHER 0x7F
typedef struct {
UINT8 Opcode;
UINT8 FusedOperation;
#define NORMAL_CMD 0x00
#define FUSED_FIRST_CMD 0x01
#define FUSED_SECOND_CMD 0x02
UINT16 Cid;
} NVME_CDW0;
typedef struct {
NVME_CDW0 Cdw0;
UINT8 Flags;
#define CDW10_VALID 0x01
#define CDW11_VALID 0x02
#define CDW12_VALID 0x04
#define CDW13_VALID 0x08
#define CDW14_VALID 0x10
#define CDW15_VALID 0x20
UINT32 Nsid;
UINT32 Cdw10;
UINT32 Cdw11;
UINT32 Cdw12;
UINT32 Cdw13;
UINT32 Cdw14;
UINT32 Cdw15;
} NVM_EXPRESS_COMMAND;
typedef struct {
UINT32 Cdw0;
UINT32 Cdw1;
UINT32 Cdw2;
UINT32 Cdw3;
} NVM_EXPRESS_RESPONSE;
typedef struct {
UINT64 CommandTimeout;
VOID *TransferBuffer;
UINT32 TransferLength;
VOID *MetadataBuffer;
UINT32 MetadataLength;
UINT8 QueueId;
NVM_EXPRESS_COMMAND *NvmeCmd;
NVM_EXPRESS_RESPONSE *NvmeResponse;
UINT8 ControllerStatus;
} NVM_EXPRESS_PASS_THRU_COMMAND_PACKET;
//
// Protocol funtion prototypes
//
/**
Sends an NVM Express Command Packet to an NVM Express controller or namespace. This function supports
both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the nonblocking
I/O functionality is optional.
@param[in] This A pointer to the NVM_EXPRESS_PASS_THRU_PROTOCOL instance.
@param[in] NamespaceId Is a 32 bit Namespace ID to which the Express HCI command packet will be sent.
A value of 0 denotes the NVM Express controller, a value of all 0FFh in the namespace
ID specifies that the command packet should be sent to all valid namespaces.
@param[in] NamespaceUuid Is a 64 bit Namespace UUID to which the Express HCI command packet will be sent.
A value of 0 denotes the NVM Express controller, a value of all 0FFh in the namespace
UUID specifies that the command packet should be sent to all valid namespaces.
@param[in,out] Packet A pointer to the NVM Express HCI Command Packet to send to the NVMe namespace specified
by NamespaceId.
@param[in] Event If nonblocking I/O is not supported then Event is ignored, and blocking I/O is performed.
If Event is NULL, then blocking I/O is performed. If Event is not NULL and non blocking I/O
is supported, then nonblocking I/O is performed, and Event will be signaled when the NVM
Express Command Packet completes.
@retval EFI_SUCCESS The NVM Express Command Packet was sent by the host. TransferLength bytes were transferred
to, or from DataBuffer.
@retval EFI_BAD_BUFFER_SIZE The NVM Express Command Packet was not executed. The number of bytes that could be transferred
is returned in TransferLength.
@retval EFI_NOT_READY The NVM Express Command Packet could not be sent because the controller is not ready. The caller
may retry again later.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the NVM Express Command Packet.
@retval EFI_INVALID_PARAMETER Namespace, or the contents of NVM_EXPRESS_PASS_THRU_COMMAND_PACKET are invalid. The NVM
Express Command Packet was not sent, so no additional status information is available.
@retval EFI_UNSUPPORTED The command described by the NVM Express Command Packet is not supported by the host adapter.
The NVM Express Command Packet was not sent, so no additional status information is available.
@retval EFI_TIMEOUT A timeout occurred while waiting for the NVM Express Command Packet to execute.
**/
typedef
EFI_STATUS
(EFIAPI *NVM_EXPRESS_PASS_THRU_PASSTHRU)(
IN NVM_EXPRESS_PASS_THRU_PROTOCOL *This,
IN UINT32 NamespaceId,
IN UINT64 NamespaceUuid,
IN OUT NVM_EXPRESS_PASS_THRU_COMMAND_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
);
/**
Used to retrieve the list of namespaces defined on an NVM Express controller.
The NVM_EXPRESS_PASS_THRU_PROTOCOL.GetNextNamespace() function retrieves a list of namespaces
defined on an NVM Express controller. If on input a NamespaceID is specified by all 0xFF in the
namespace buffer, then the first namespace defined on the NVM Express controller is returned in
NamespaceID, and a status of EFI_SUCCESS is returned.
If NamespaceId is a Namespace value that was returned on a previous call to GetNextNamespace(),
then the next valid NamespaceId for an NVM Express SSD namespace on the NVM Express controller
is returned in NamespaceId, and EFI_SUCCESS is returned.
If Namespace array is not a 0xFFFFFFFF and NamespaceId was not returned on a previous call to
GetNextNamespace(), then EFI_INVALID_PARAMETER is returned.
If NamespaceId is the NamespaceId of the last SSD namespace on the NVM Express controller, then
EFI_NOT_FOUND is returned
@param[in] This A pointer to the NVM_EXPRESS_PASS_THRU_PROTOCOL instance.
@param[in,out] NamespaceId On input, a pointer to a legal NamespaceId for an NVM Express
namespace present on the NVM Express controller. On output, a
pointer to the next NamespaceId of an NVM Express namespace on
an NVM Express controller. An input value of 0xFFFFFFFF retrieves
the first NamespaceId for an NVM Express namespace present on an
NVM Express controller.
@param[out] NamespaceUuid On output, the UUID associated with the next namespace, if a UUID
is defined for that NamespaceId, otherwise, zero is returned in
this parameter. If the caller does not require a UUID, then a NULL
pointer may be passed.
@retval EFI_SUCCESS The NamespaceId of the next Namespace was returned.
@retval EFI_NOT_FOUND There are no more namespaces defined on this controller.
@retval EFI_INVALID_PARAMETER Namespace array is not a 0xFFFFFFFF and NamespaceId was not returned
on a previous call to GetNextNamespace().
**/
typedef
EFI_STATUS
(EFIAPI *NVM_EXPRESS_PASS_THRU_GET_NEXT_NAMESPACE)(
IN NVM_EXPRESS_PASS_THRU_PROTOCOL *This,
IN OUT UINT32 *NamespaceId,
OUT UINT64 *NamespaceUuid OPTIONAL
);
/**
Used to allocate and build a device path node for an NVM Express namespace on an NVM Express controller.
The NVM_EXPRESS_PASS_THRU_PROTOCOL.BuildDevicePath() function allocates and builds a single device
path node for the NVM Express namespace specified by NamespaceId.
If the namespace device specified by NamespaceId is not valid , then EFI_NOT_FOUND is returned.
If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned.
If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES is returned.
Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of DevicePath are
initialized to describe the NVM Express namespace specified by NamespaceId, and EFI_SUCCESS is returned.
@param[in] This A pointer to the NVM_EXPRESS_PASS_THRU_PROTOCOL instance.
@param[in] NamespaceId The NVM Express namespace ID for which a device path node is to be
allocated and built. Caller must set the NamespaceId to zero if the
device path node will contain a valid UUID.
@param[in] NamespaceUuid The NVM Express namespace UUID for which a device path node is to be
allocated and built. UUID will only be valid of the Namespace ID is zero.
@param[in,out] DevicePath A pointer to a single device path node that describes the NVM Express
namespace specified by NamespaceId. This function is responsible for
allocating the buffer DevicePath with the boot service AllocatePool().
It is the caller's responsibility to free DevicePath when the caller
is finished with DevicePath.
@retval EFI_SUCCESS The device path node that describes the NVM Express namespace specified
by NamespaceId was allocated and returned in DevicePath.
@retval EFI_NOT_FOUND The NVM Express namespace specified by NamespaceId does not exist on the
NVM Express controller.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate the DevicePath node.
**/
typedef
EFI_STATUS
(EFIAPI *NVM_EXPRESS_PASS_THRU_BUILD_DEVICE_PATH)(
IN NVM_EXPRESS_PASS_THRU_PROTOCOL *This,
IN UINT32 NamespaceId,
IN UINT64 NamespaceUuid,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
);
/**
Used to translate a device path node to a Namespace ID and Namespace UUID.
The NVM_EXPRESS_PASS_THRU_PROTOCOL.GetNamwspace() function determines the Namespace ID and Namespace UUID
associated with the NVM Express SSD namespace described by DevicePath. If DevicePath is a device path node type
that the NVM Express Pass Thru driver supports, then the NVM Express Pass Thru driver will attempt to translate
the contents DevicePath into a Namespace ID and UUID. If this translation is successful, then that Namespace ID
and UUID are returned in NamespaceID and NamespaceUUID, and EFI_SUCCESS is returned.
@param[in] This A pointer to the NVM_EXPRESS_PASS_THRU_PROTOCOL instance.
@param[in] DevicePath A pointer to the device path node that describes an NVM Express namespace on
the NVM Express controller.
@param[out] NamespaceId The NVM Express namespace ID contained in the device path node.
@param[out] NamespaceUuid The NVM Express namespace contained in the device path node.
@retval EFI_SUCCESS DevicePath was successfully translated to NamespaceId and NamespaceUuid.
@retval EFI_INVALID_PARAMETER If DevicePath, NamespaceId, or NamespaceUuid are NULL, then EFI_INVALID_PARAMETER
is returned.
@retval EFI_UNSUPPORTED If DevicePath is not a device path node type that the NVM Express Pass Thru driver
supports, then EFI_UNSUPPORTED is returned.
@retval EFI_NOT_FOUND If DevicePath is a device path node type that the Nvm Express Pass Thru driver
supports, but there is not a valid translation from DevicePath to a NamespaceID
and NamespaceUuid, then EFI_NOT_FOUND is returned.
**/
typedef
EFI_STATUS
(EFIAPI *NVM_EXPRESS_PASS_THRU_GET_NAMESPACE)(
IN NVM_EXPRESS_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT32 *NamespaceId,
OUT UINT64 *NamespaceUuid
);
//
// Protocol Interface Structure
//
struct _NVM_EXPRESS_PASS_THRU_PROTOCOL {
NVM_EXPRESS_PASS_THRU_MODE *Mode;
NVM_EXPRESS_PASS_THRU_PASSTHRU PassThru;
NVM_EXPRESS_PASS_THRU_GET_NEXT_NAMESPACE GetNextNamespace;
NVM_EXPRESS_PASS_THRU_BUILD_DEVICE_PATH BuildDevicePath;
NVM_EXPRESS_PASS_THRU_GET_NAMESPACE GetNamespace;
};
//extern EFI_GUID gNvmExpressPassThruProtocolGuid;
#endif
|
