| /** @file | |
| This driver module produces IDE_CONTROLLER_INIT protocol and will be used by | |
| IDE Bus driver to support platform dependent timing information. This driver | |
| is responsible for early initialization of IDE controller. | |
| Copyright (c) 2008 - 2011, 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. | |
| **/ | |
| #include "IdeController.h" | |
| /// | |
| /// EFI_DRIVER_BINDING_PROTOCOL instance | |
| /// | |
| EFI_DRIVER_BINDING_PROTOCOL gIdeControllerDriverBinding = { | |
| IdeControllerSupported, | |
| IdeControllerStart, | |
| IdeControllerStop, | |
| 0xa, | |
| NULL, | |
| NULL | |
| }; | |
| /// | |
| /// EFI_IDE_CONTROLLER_PROVATE_DATA Template | |
| /// | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL gEfiIdeControllerInit = { | |
| IdeInitGetChannelInfo, | |
| IdeInitNotifyPhase, | |
| IdeInitSubmitData, | |
| IdeInitDisqualifyMode, | |
| IdeInitCalculateMode, | |
| IdeInitSetTiming, | |
| ICH_IDE_ENUMER_ALL, | |
| ICH_IDE_MAX_CHANNEL | |
| }; | |
| /// | |
| /// EFI_ATA_COLLECTIVE_MODE Template | |
| /// | |
| EFI_ATA_COLLECTIVE_MODE gEfiAtaCollectiveModeTemplate = { | |
| { | |
| TRUE, ///< PioMode.Valid | |
| 0 ///< PioMode.Mode | |
| }, | |
| { | |
| TRUE, ///< SingleWordDmaMode.Valid | |
| 0 | |
| }, | |
| { | |
| FALSE, ///< MultiWordDmaMode.Valid | |
| 0 | |
| }, | |
| { | |
| TRUE, ///< UdmaMode.Valid | |
| 0 ///< UdmaMode.Mode | |
| } | |
| }; | |
| /** | |
| Chipset Ide Driver EntryPoint function. It follows the standard EFI driver model. | |
| It's called by StartImage() of DXE Core. | |
| @param ImageHandle While the driver image loaded be the ImageLoader(), | |
| an image handle is assigned to this driver binary, | |
| all activities of the driver is tied to this ImageHandle | |
| @param SystemTable A pointer to the system table, for all BS(Boo Services) and | |
| RT(Runtime Services) | |
| @return EFI_STATUS Status of EfiLibInstallDriverBindingComponentName2(). | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| InitializeIdeControllerDriver ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| // | |
| // Install driver model protocol(s). | |
| // | |
| Status = EfiLibInstallDriverBindingComponentName2 ( | |
| ImageHandle, | |
| SystemTable, | |
| &gIdeControllerDriverBinding, | |
| ImageHandle, | |
| &gIdeControllerComponentName, | |
| &gIdeControllerComponentName2 | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| return Status; | |
| } | |
| /** | |
| Register Driver Binding protocol for this driver. | |
| @param This A pointer points to the Binding Protocol instance | |
| @param Controller The handle of controller to be tested. | |
| @param RemainingDevicePath A pointer to the device path. Ignored by device | |
| driver but used by bus driver | |
| @retval EFI_SUCCESS Driver loaded. | |
| @retval !EFI_SUCCESS Driver not loaded. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeControllerSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_PCI_IO_PROTOCOL *PciIo; | |
| UINT8 PciClass; | |
| UINT8 PciSubClass; | |
| // | |
| // Attempt to Open PCI I/O Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| (VOID **) &PciIo, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Now further check the PCI header: Base class (offset 0x0B) and | |
| // Sub Class (offset 0x0A). This controller should be an Ide controller | |
| // | |
| Status = PciIo->Pci.Read ( | |
| PciIo, | |
| EfiPciIoWidthUint8, | |
| PCI_CLASSCODE_OFFSET + 2, | |
| 1, | |
| &PciClass | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto Done; | |
| } | |
| Status = PciIo->Pci.Read ( | |
| PciIo, | |
| EfiPciIoWidthUint8, | |
| PCI_CLASSCODE_OFFSET + 1, | |
| 1, | |
| &PciSubClass | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto Done; | |
| } | |
| // | |
| // Examine Ide PCI Configuration table fields | |
| // | |
| if ((PciClass != PCI_CLASS_MASS_STORAGE) || (PciSubClass != PCI_CLASS_MASS_STORAGE_IDE)) { | |
| Status = EFI_UNSUPPORTED; | |
| } | |
| Done: | |
| gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| return Status; | |
| } | |
| /** | |
| This routine is called right after the .Supported() called and return | |
| EFI_SUCCESS. Notes: The supported protocols are checked but the Protocols | |
| are closed. | |
| @param This A pointer points to the Binding Protocol instance | |
| @param Controller The handle of controller to be tested. Parameter | |
| passed by the caller | |
| @param RemainingDevicePath A pointer to the device path. Should be ignored by | |
| device driver | |
| @return EFI_STATUS Status of InstallMultipleProtocolInterfaces() | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeControllerStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_PCI_IO_PROTOCOL *PciIo; | |
| // | |
| // Now test and open the EfiPciIoProtocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| (VOID **) &PciIo, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| // | |
| // Status == EFI_SUCCESS - A normal execution flow, SUCCESS and the program proceeds. | |
| // Status == ALREADY_STARTED - A non-zero Status code returned. It indicates | |
| // that the protocol has been opened and should be treated as a | |
| // normal condition and the program proceeds. The Protocol will not | |
| // opened 'again' by this call. | |
| // Status != ALREADY_STARTED - Error status, terminate program execution | |
| // | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Install IDE_CONTROLLER_INIT protocol | |
| // | |
| return gBS->InstallMultipleProtocolInterfaces ( | |
| &Controller, | |
| &gEfiIdeControllerInitProtocolGuid, &gEfiIdeControllerInit, | |
| NULL | |
| ); | |
| } | |
| /** | |
| Stop this driver on Controller Handle. | |
| @param This Protocol instance pointer. | |
| @param Controller Handle of device to stop driver on | |
| @param NumberOfChildren Not used | |
| @param ChildHandleBuffer Not used | |
| @retval EFI_SUCCESS This driver is removed DeviceHandle | |
| @retval !EFI_SUCCESS This driver was not removed from this device | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeControllerStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit; | |
| // | |
| // Open the produced protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiIdeControllerInitProtocolGuid, | |
| (VOID **) &IdeControllerInit, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| // | |
| // Make sure the protocol was produced by this driver | |
| // | |
| if (IdeControllerInit != &gEfiIdeControllerInit) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| // | |
| // Uninstall the IDE Controller Init Protocol | |
| // | |
| Status = gBS->UninstallMultipleProtocolInterfaces ( | |
| Controller, | |
| &gEfiIdeControllerInitProtocolGuid, &gEfiIdeControllerInit, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Close protocols opened by Ide controller driver | |
| // | |
| return gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| } | |
| // | |
| // Interface functions of IDE_CONTROLLER_INIT protocol | |
| // | |
| /** | |
| Returns the information about the specified IDE channel. | |
| This function can be used to obtain information about a particular IDE channel. | |
| The driver entity uses this information during the enumeration process. | |
| If Enabled is set to FALSE, the driver entity will not scan the channel. Note | |
| that it will not prevent an operating system driver from scanning the channel. | |
| For most of today's controllers, MaxDevices will either be 1 or 2. For SATA | |
| controllers, this value will always be 1. SATA configurations can contain SATA | |
| port multipliers. SATA port multipliers behave like SATA bridges and can support | |
| up to 16 devices on the other side. If a SATA port out of the IDE controller | |
| is connected to a port multiplier, MaxDevices will be set to the number of SATA | |
| devices that the port multiplier supports. Because today's port multipliers | |
| support up to fifteen SATA devices, this number can be as large as fifteen. The IDE | |
| bus driver is required to scan for the presence of port multipliers behind an SATA | |
| controller and enumerate up to MaxDevices number of devices behind the port | |
| multiplier. | |
| In this context, the devices behind a port multiplier constitute a channel. | |
| @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Channel Zero-based channel number. | |
| @param[out] Enabled TRUE if this channel is enabled. Disabled channels | |
| are not scanned to see if any devices are present. | |
| @param[out] MaxDevices The maximum number of IDE devices that the bus driver | |
| can expect on this channel. For the ATA/ATAPI | |
| specification, version 6, this number will either be | |
| one or two. For Serial ATA (SATA) configurations with a | |
| port multiplier, this number can be as large as fifteen. | |
| @retval EFI_SUCCESS Information was returned without any errors. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitGetChannelInfo ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN UINT8 Channel, | |
| OUT BOOLEAN *Enabled, | |
| OUT UINT8 *MaxDevices | |
| ) | |
| { | |
| // | |
| // Channel number (0 based, either 0 or 1) | |
| // | |
| if (Channel < ICH_IDE_MAX_CHANNEL) { | |
| *Enabled = TRUE; | |
| *MaxDevices = ICH_IDE_MAX_DEVICES; | |
| return EFI_SUCCESS; | |
| } | |
| *Enabled = FALSE; | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| /** | |
| The notifications from the driver entity that it is about to enter a certain | |
| phase of the IDE channel enumeration process. | |
| This function can be used to notify the IDE controller driver to perform | |
| specific actions, including any chipset-specific initialization, so that the | |
| chipset is ready to enter the next phase. Seven notification points are defined | |
| at this time. | |
| More synchronization points may be added as required in the future. | |
| @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Phase The phase during enumeration. | |
| @param[in] Channel Zero-based channel number. | |
| @retval EFI_SUCCESS The notification was accepted without any errors. | |
| @retval EFI_UNSUPPORTED Phase is not supported. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| @retval EFI_NOT_READY This phase cannot be entered at this time; for | |
| example, an attempt was made to enter a Phase | |
| without having entered one or more previous | |
| Phase. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitNotifyPhase ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN EFI_IDE_CONTROLLER_ENUM_PHASE Phase, | |
| IN UINT8 Channel | |
| ) | |
| { | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Submits the device information to the IDE controller driver. | |
| This function is used by the driver entity to pass detailed information about | |
| a particular device to the IDE controller driver. The driver entity obtains | |
| this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData | |
| is the pointer to the response data buffer. The IdentifyData buffer is owned | |
| by the driver entity, and the IDE controller driver must make a local copy | |
| of the entire buffer or parts of the buffer as needed. The original IdentifyData | |
| buffer pointer may not be valid when | |
| - EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or | |
| - EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point. | |
| The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to | |
| compute the optimum mode for the device. These fields are not limited to the | |
| timing information. For example, an implementation of the IDE controller driver | |
| may examine the vendor and type/mode field to match known bad drives. | |
| The driver entity may submit drive information in any order, as long as it | |
| submits information for all the devices belonging to the enumeration group | |
| before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device | |
| in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() | |
| should be called with IdentifyData set to NULL. The IDE controller driver may | |
| not have any other mechanism to know whether a device is present or not. Therefore, | |
| setting IdentifyData to NULL does not constitute an error condition. | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a | |
| given (Channel, Device) pair. | |
| @param[in] This A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Channel Zero-based channel number. | |
| @param[in] Device Zero-based device number on the Channel. | |
| @param[in] IdentifyData The device's response to the ATA IDENTIFY_DEVICE command. | |
| @retval EFI_SUCCESS The information was accepted without any errors. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| @retval EFI_INVALID_PARAMETER Device is invalid. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitSubmitData ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN UINT8 Channel, | |
| IN UINT8 Device, | |
| IN EFI_IDENTIFY_DATA *IdentifyData | |
| ) | |
| { | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Disqualifies specific modes for an IDE device. | |
| This function allows the driver entity or other drivers (such as platform | |
| drivers) to reject certain timing modes and request the IDE controller driver | |
| to recalculate modes. This function allows the driver entity and the IDE | |
| controller driver to negotiate the timings on a per-device basis. This function | |
| is useful in the case of drives that lie about their capabilities. An example | |
| is when the IDE device fails to accept the timing modes that are calculated | |
| by the IDE controller driver based on the response to the Identify Drive command. | |
| If the driver entity does not want to limit the ATA timing modes and leave that | |
| decision to the IDE controller driver, it can either not call this function for | |
| the given device or call this function and set the Valid flag to FALSE for all | |
| modes that are listed in EFI_ATA_COLLECTIVE_MODE. | |
| The driver entity may disqualify modes for a device in any order and any number | |
| of times. | |
| This function can be called multiple times to invalidate multiple modes of the | |
| same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI | |
| specification for more information on PIO modes. | |
| For Serial ATA (SATA) controllers, this member function can be used to disqualify | |
| a higher transfer rate mode on a given channel. For example, a platform driver | |
| may inform the IDE controller driver to not use second-generation (Gen2) speeds | |
| for a certain SATA drive. | |
| @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Channel The zero-based channel number. | |
| @param[in] Device The zero-based device number on the Channel. | |
| @param[in] BadModes The modes that the device does not support and that | |
| should be disqualified. | |
| @retval EFI_SUCCESS The modes were accepted without any errors. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| @retval EFI_INVALID_PARAMETER Device is invalid. | |
| @retval EFI_INVALID_PARAMETER IdentifyData is NULL. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitDisqualifyMode ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN UINT8 Channel, | |
| IN UINT8 Device, | |
| IN EFI_ATA_COLLECTIVE_MODE *BadModes | |
| ) | |
| { | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Returns the information about the optimum modes for the specified IDE device. | |
| This function is used by the driver entity to obtain the optimum ATA modes for | |
| a specific device. The IDE controller driver takes into account the following | |
| while calculating the mode: | |
| - The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() | |
| - The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() | |
| The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() | |
| for all the devices that belong to an enumeration group before calling | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group. | |
| The IDE controller driver will use controller- and possibly platform-specific | |
| algorithms to arrive at SupportedModes. The IDE controller may base its | |
| decision on user preferences and other considerations as well. This function | |
| may be called multiple times because the driver entity may renegotiate the mode | |
| with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode(). | |
| The driver entity may collect timing information for various devices in any | |
| order. The driver entity is responsible for making sure that all the dependencies | |
| are satisfied. For example, the SupportedModes information for device A that | |
| was previously returned may become stale after a call to | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B. | |
| The buffer SupportedModes is allocated by the callee because the caller does | |
| not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE | |
| is defined in a way that allows for future extensibility and can be of variable | |
| length. This memory pool should be deallocated by the caller when it is no | |
| longer necessary. | |
| The IDE controller driver for a Serial ATA (SATA) controller can use this | |
| member function to force a lower speed (first-generation [Gen1] speeds on a | |
| second-generation [Gen2]-capable hardware). The IDE controller driver can | |
| also allow the driver entity to stay with the speed that has been negotiated | |
| by the physical layer. | |
| @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Channel A zero-based channel number. | |
| @param[in] Device A zero-based device number on the Channel. | |
| @param[out] SupportedModes The optimum modes for the device. | |
| @retval EFI_SUCCESS SupportedModes was returned. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| @retval EFI_INVALID_PARAMETER Device is invalid. | |
| @retval EFI_INVALID_PARAMETER SupportedModes is NULL. | |
| @retval EFI_NOT_READY Modes cannot be calculated due to a lack of | |
| data. This error may happen if | |
| EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() | |
| and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData() | |
| were not called for at least one drive in the | |
| same enumeration group. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitCalculateMode ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN UINT8 Channel, | |
| IN UINT8 Device, | |
| OUT EFI_ATA_COLLECTIVE_MODE **SupportedModes | |
| ) | |
| { | |
| if (Channel >= ICH_IDE_MAX_CHANNEL || Device >= ICH_IDE_MAX_DEVICES) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| *SupportedModes = AllocateCopyPool (sizeof (EFI_ATA_COLLECTIVE_MODE), &gEfiAtaCollectiveModeTemplate); | |
| if (*SupportedModes == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Commands the IDE controller driver to program the IDE controller hardware | |
| so that the specified device can operate at the specified mode. | |
| This function is used by the driver entity to instruct the IDE controller | |
| driver to program the IDE controller hardware to the specified modes. This | |
| function can be called only once for a particular device. For a Serial ATA | |
| (SATA) Advanced Host Controller Interface (AHCI) controller, no controller- | |
| specific programming may be required. | |
| @param[in] This Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance. | |
| @param[in] Channel Zero-based channel number. | |
| @param[in] Device Zero-based device number on the Channel. | |
| @param[in] Modes The modes to set. | |
| @retval EFI_SUCCESS The command was accepted without any errors. | |
| @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount). | |
| @retval EFI_INVALID_PARAMETER Device is invalid. | |
| @retval EFI_NOT_READY Modes cannot be set at this time due to lack of data. | |
| @retval EFI_DEVICE_ERROR Modes cannot be set due to hardware failure. | |
| The driver entity should not use this device. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IdeInitSetTiming ( | |
| IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This, | |
| IN UINT8 Channel, | |
| IN UINT8 Device, | |
| IN EFI_ATA_COLLECTIVE_MODE *Modes | |
| ) | |
| { | |
| return EFI_SUCCESS; | |
| } |