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/** @file
EFI Driver Health Protocol definitions.
When installed, the Driver Health Protocol produces a collection of services that allow
the health status for a controller to be retrieved. If a controller is not in a usable
state, status messages may be reported to the user, repair operations can be invoked,
and the user may be asked to make software and/or hardware configuration changes.
The Driver Health Protocol is optionally produced by a driver that follows the
EFI Driver Model. If an EFI Driver needs to report health status to the platform,
provide warning or error messages to the user, perform length repair operations,
or request the user to make hardware or software configuration changes, then the
Driver Health Protocol must be produced.
A controller that is managed by driver that follows the EFI Driver Model and
produces the Driver Health Protocol must report the current health of the
controllers that the driver is currently managing. The controller can initially
be healthy, failed, require repair, or require configuration. If a controller
requires configuration, and the user make configuration changes, the controller
may then need to be reconnected or the system may need to be rebooted for the
configuration changes to take affect.
Copyright (c) 2009, Intel Corporation
All rights reserved. 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.
@par Revision Reference:
This Protocol is defined in UEFI Specification 2.2
**/
#ifndef __EFI_DRIVER_HEALTH_H__
#define __EFI_DRIVER_HEALTH_H__
#define EFI_DRIVER_HEALTH_PROTOCOL_GUID \
{ \
0x2a534210, 0x9280, 0x41d8, { 0xae, 0x79, 0xca, 0xda, 0x1, 0xa2, 0xb1, 0x27 } \
}
typedef struct _EFI_DRIVER_HEALTH_PROTOCOL EFI_DRIVER_HEALTH_PROTOCOL;
///
/// EFI_DRIVER_HEALTH_HEALTH_STATUS
///
typedef enum {
EfiDriverHealthStatusHealthy,
EfiDriverHealthStatusRepairRequired,
EfiDriverHealthStatusConfigurationRequired,
EfiDriverHealthStatusFailed,
EfiDriverHealthStatusReconnectRequired,
EfiDriverHealthStatusRebootRequired
} EFI_DRIVER_HEALTH_STATUS;
///
/// EFI_DRIVER_HEALTH_HII_MESSAGE
///
typedef struct {
EFI_HII_HANDLE HiiHandle;
EFI_STRING_ID StringId;
UINT64 Reserved;
} EFI_DRIVER_HEALTH_HII_MESSAGE;
/**
Reports the progress of a repair operation
@param[in] Value A value between 0 and Limit that identifies the current
progress of the repair operation.
@param[in] Limit The maximum value of Value for the current repair operation.
For example, a driver that wants to specify progress in
percent would use a Limit value of 100.
@retval EFI_SUCCESS An attempt to repair the controller specified by
ControllerHandle and ChildHandle was performed. The
result of the repair operation can bet determined by
calling GetHealthStatus().
@retval EFI_UNSUPPORTED The driver specified by This is not currently managing the
controller specified by ControllerHandle and
ChildHandle.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to perform the repair operation.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_HEALTH_REPAIR_PROGRESS_NOTIFY)(
IN UINTN Value,
IN UINTN Limit
);
/**
Retrieves the health status of a controller in the platform. This function can also
optionally return warning messages, error messages, and a set of HII Forms that may
be repair a controller that is not proper configured.
@param[in] This A pointer to the EFI_DRIVER_HEALTH_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to retrieve the health status
on. This is an optional parameter that may be NULL. If
this parameter is NULL, then the value of ChildHandle is
ignored, and the combined health status of all the devices
that the driver is managing is returned.
@param[in] ChildHandle The handle of the child controller to retrieve the health
status on. This is an optional parameter that may be NULL.
This parameter is ignored of ControllerHandle is NULL. It
will be NULL for device drivers. It will also be NULL for
bus drivers when an attempt is made to collect the health
status of the bus controller. If will not be NULL when an
attempt is made to collect the health status for a child
controller produced by the driver.
@param[out] HealthStatus A pointer to the health status that is returned by this
function. This is an optional parameter that may be NULL.
This parameter is ignored of ControllerHandle is NULL.
The health status for the controller specified by
ControllerHandle and ChildHandle is returned.
@param[out] MessageList A pointer to an array of warning or error messages associated
with the controller specified by ControllerHandle and
ChildHandle. This is an optional parameter that may be NULL.
MessageList is allocated by this function with the EFI Boot
Service AllocatePool(), and it is the caller's responsibility
to free MessageList with the EFI Boot Service FreePool().
Each message is specified by tuple of an EFI_HII_HANDLE and
an EFI_STRING_ID. The array of messages is terminated by tuple
containing a EFI_HII_HANDLE with a value of NULL. The
EFI_HII_STRING_PROTOCOL.GetString() function can be used to
retrieve the warning or error message as a Null-terminated
Unicode string in a specific language. Messages may be
returned for any of the HealthStatus values except
EfiDriverHealthStatusReconnectRequired and
EfiDriverHealthStatusRebootRequired.
@param[out] FormHiiHandle A pointer to the HII handle containing the HII form used when
configuration is required. The HII handle is associated with
the controller specified by ControllerHandle and ChildHandle.
If this is NULL, then no HII form is available. An HII handle
will only be returned with a HealthStatus value of
EfiDriverHealthStatusConfigurationRequired.
@retval EFI_SUCCESS ControllerHandle is NULL, and all the controllers
managed by this driver specified by This have a health
status of EfiDriverHealthStatusHealthy with no warning
messages to be returned. The ChildHandle, HealthStatus,
MessageList, and FormList parameters are ignored.
@retval EFI_DEVICE_ERROR ControllerHandle is NULL, and one or more of the
controllers managed by this driver specified by This
do not have a health status of EfiDriverHealthStatusHealthy.
The ChildHandle, HealthStatus, MessageList, and
FormList parameters are ignored.
@retval EFI_DEVICE_ERROR ControllerHandle is NULL, and one or more of the
controllers managed by this driver specified by This
have one or more warning and/or error messages.
The ChildHandle, HealthStatus, MessageList, and
FormList parameters are ignored.
@retval EFI_SUCCESS ControllerHandle is not NULL and the health status
of the controller specified by ControllerHandle and
ChildHandle was returned in HealthStatus. A list
of warning and error messages may be optionally
returned in MessageList, and a list of HII Forms
may be optionally returned in FormList.
@retval EFI_UNSUPPORTED ControllerHandle is not NULL, and the controller
specified by ControllerHandle and ChildHandle is not
currently being managed by the driver specified by This.
@retval EFI_INVALID_PARAMETER HealthStatus is NULL.
@retval EFI_OUT_OF_RESOURCES MessageList is not NULL, and there are not enough
resource available to allocate memory for MessageList.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_HEALTH_GET_HEALTH_STATUS)(
IN EFI_DRIVER_HEALTH_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle OPTIONAL,
IN EFI_HANDLE ChildHandle OPTIONAL,
OUT EFI_DRIVER_HEALTH_STATUS *HealthStatus,
OUT EFI_DRIVER_HEALTH_HII_MESSAGE **MessageList OPTIONAL,
OUT EFI_HII_HANDLE *FormHiiHandle OPTIONAL
);
/**
Performs a repair operation on a controller in the platform. This function can
optionally report repair progress information back to the platform.
@param[in] This A pointer to the EFI_DRIVER_HEALTH_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to repair.
@param[in] ChildHandle The handle of the child controller to repair. This is
an optional parameter that may be NULL. It will be NULL
for device drivers. It will also be NULL for bus
drivers when an attempt is made to repair a bus controller.
If will not be NULL when an attempt is made to repair a
child controller produced by the driver.
@param[in] ProgressNotification A notification function that may be used by a driver to
report the progress of the repair operation. This is
an optional parameter that may be NULL.
@retval EFI_SUCCESS An attempt to repair the controller specified by
ControllerHandle and ChildHandle was performed.
The result of the repair operation can bet
determined by calling GetHealthStatus().
@retval EFI_UNSUPPORTED The driver specified by This is not currently
managing the controller specified by ControllerHandle
and ChildHandle.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to perform the
repair operation.
*/
typedef
EFI_STATUS
(EFIAPI *EFI_DRIVER_HEALTH_REPAIR)(
IN EFI_DRIVER_HEALTH_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN EFI_DRIVER_HEALTH_REPAIR_PROGRESS_NOTIFY ProgressNotification OPTIONAL
);
///
/// When installed, the Driver Health Protocol produces a collection of services
/// that allow the health status for a controller to be retrieved. If a controller
/// is not in a usable state, status messages may be reported to the user, repair
/// operations can be invoked, and the user may be asked to make software and/or
/// hardware configuration changes.
///
struct _EFI_DRIVER_HEALTH_PROTOCOL {
EFI_DRIVER_HEALTH_GET_HEALTH_STATUS GetHealthStatus;
EFI_DRIVER_HEALTH_REPAIR Repair;
};
extern EFI_GUID gEfiDriverHealthProtocolGuid;
#endif
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