diff options
Diffstat (limited to 'CorebootModulePkg/SataControllerDxe/SataController.c')
| -rw-r--r-- | CorebootModulePkg/SataControllerDxe/SataController.c | 1049 |
1 files changed, 1049 insertions, 0 deletions
diff --git a/CorebootModulePkg/SataControllerDxe/SataController.c b/CorebootModulePkg/SataControllerDxe/SataController.c new file mode 100644 index 0000000000..d35c6c3367 --- /dev/null +++ b/CorebootModulePkg/SataControllerDxe/SataController.c @@ -0,0 +1,1049 @@ +/** @file + This driver module produces IDE_CONTROLLER_INIT protocol for Sata Controllers. + + Copyright (c) 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 "SataController.h" + +/// +/// EFI_DRIVER_BINDING_PROTOCOL instance +/// +EFI_DRIVER_BINDING_PROTOCOL gSataControllerDriverBinding = { + SataControllerSupported, + SataControllerStart, + SataControllerStop, + 0xa, + NULL, + NULL +}; + +/** + Read AHCI Operation register. + + @param PciIo The PCI IO protocol instance. + @param Offset The operation register offset. + + @return The register content read. + +**/ +UINT32 +EFIAPI +AhciReadReg ( + IN EFI_PCI_IO_PROTOCOL *PciIo, + IN UINT32 Offset + ) +{ + UINT32 Data; + + ASSERT (PciIo != NULL); + + Data = 0; + + PciIo->Mem.Read ( + PciIo, + EfiPciIoWidthUint32, + AHCI_BAR_INDEX, + (UINT64) Offset, + 1, + &Data + ); + + return Data; +} + +/** + Write AHCI Operation register. + + @param PciIo The PCI IO protocol instance. + @param Offset The operation register offset. + @param Data The data used to write down. + +**/ +VOID +EFIAPI +AhciWriteReg ( + IN EFI_PCI_IO_PROTOCOL *PciIo, + IN UINT32 Offset, + IN UINT32 Data + ) +{ + ASSERT (PciIo != NULL); + + PciIo->Mem.Write ( + PciIo, + EfiPciIoWidthUint32, + AHCI_BAR_INDEX, + (UINT64) Offset, + 1, + &Data + ); + + return; +} + +/** + This function is used to calculate the best PIO mode supported by specific IDE device + + @param IdentifyData The identify data of specific IDE device. + @param DisPioMode Disqualified PIO modes collection. + @param SelectedMode Available PIO modes collection. + + @retval EFI_SUCCESS Best PIO modes are returned. + @retval EFI_UNSUPPORTED The device doesn't support PIO mode, + or all supported modes have been disqualified. +**/ +EFI_STATUS +CalculateBestPioMode ( + IN EFI_IDENTIFY_DATA *IdentifyData, + IN UINT16 *DisPioMode OPTIONAL, + OUT UINT16 *SelectedMode + ) +{ + UINT16 PioMode; + UINT16 AdvancedPioMode; + UINT16 Temp; + UINT16 Index; + UINT16 MinimumPioCycleTime; + + Temp = 0xff; + + PioMode = (UINT8) (((ATA5_IDENTIFY_DATA *) (&(IdentifyData->AtaData)))->pio_cycle_timing >> 8); + + // + // See whether Identify Data word 64 - 70 are valid + // + if ((IdentifyData->AtaData.field_validity & 0x02) == 0x02) { + + AdvancedPioMode = IdentifyData->AtaData.advanced_pio_modes; + DEBUG ((EFI_D_INFO, "CalculateBestPioMode: AdvancedPioMode = %x\n", AdvancedPioMode)); + + for (Index = 0; Index < 8; Index++) { + if ((AdvancedPioMode & 0x01) != 0) { + Temp = Index; + } + + AdvancedPioMode >>= 1; + } + + // + // If Temp is modified, mean the advanced_pio_modes is not zero; + // if Temp is not modified, mean there is no advanced PIO mode supported, + // the best PIO Mode is the value in pio_cycle_timing. + // + if (Temp != 0xff) { + AdvancedPioMode = (UINT16) (Temp + 3); + } else { + AdvancedPioMode = PioMode; + } + + // + // Limit the PIO mode to at most PIO4. + // + PioMode = (UINT16) MIN (AdvancedPioMode, 4); + + MinimumPioCycleTime = IdentifyData->AtaData.min_pio_cycle_time_with_flow_control; + + if (MinimumPioCycleTime <= 120) { + PioMode = (UINT16) MIN (4, PioMode); + } else if (MinimumPioCycleTime <= 180) { + PioMode = (UINT16) MIN (3, PioMode); + } else if (MinimumPioCycleTime <= 240) { + PioMode = (UINT16) MIN (2, PioMode); + } else { + PioMode = 0; + } + + // + // Degrade the PIO mode if the mode has been disqualified + // + if (DisPioMode != NULL) { + if (*DisPioMode < 2) { + return EFI_UNSUPPORTED; // no mode below ATA_PIO_MODE_BELOW_2 + } + + if (PioMode >= *DisPioMode) { + PioMode = (UINT16) (*DisPioMode - 1); + } + } + + if (PioMode < 2) { + *SelectedMode = 1; // ATA_PIO_MODE_BELOW_2; + } else { + *SelectedMode = PioMode; // ATA_PIO_MODE_2 to ATA_PIO_MODE_4; + } + + } else { + // + // Identify Data word 64 - 70 are not valid + // Degrade the PIO mode if the mode has been disqualified + // + if (DisPioMode != NULL) { + if (*DisPioMode < 2) { + return EFI_UNSUPPORTED; // no mode below ATA_PIO_MODE_BELOW_2 + } + + if (PioMode == *DisPioMode) { + PioMode--; + } + } + + if (PioMode < 2) { + *SelectedMode = 1; // ATA_PIO_MODE_BELOW_2; + } else { + *SelectedMode = 2; // ATA_PIO_MODE_2; + } + + } + + return EFI_SUCCESS; +} + +/** + This function is used to calculate the best UDMA mode supported by specific IDE device + + @param IdentifyData The identify data of specific IDE device. + @param DisUDmaMode Disqualified UDMA modes collection. + @param SelectedMode Available UDMA modes collection. + + @retval EFI_SUCCESS Best UDMA modes are returned. + @retval EFI_UNSUPPORTED The device doesn't support UDMA mode, + or all supported modes have been disqualified. +**/ +EFI_STATUS +CalculateBestUdmaMode ( + IN EFI_IDENTIFY_DATA *IdentifyData, + IN UINT16 *DisUDmaMode OPTIONAL, + OUT UINT16 *SelectedMode + ) +{ + UINT16 TempMode; + UINT16 DeviceUDmaMode; + + DeviceUDmaMode = 0; + + // + // Check whether the WORD 88 (supported UltraDMA by drive) is valid + // + if ((IdentifyData->AtaData.field_validity & 0x04) == 0x00) { + return EFI_UNSUPPORTED; + } + + DeviceUDmaMode = IdentifyData->AtaData.ultra_dma_mode; + DEBUG ((EFI_D_INFO, "CalculateBestUdmaMode: DeviceUDmaMode = %x\n", DeviceUDmaMode)); + DeviceUDmaMode &= 0x3f; + TempMode = 0; // initialize it to UDMA-0 + + while ((DeviceUDmaMode >>= 1) != 0) { + TempMode++; + } + + // + // Degrade the UDMA mode if the mode has been disqualified + // + if (DisUDmaMode != NULL) { + if (*DisUDmaMode == 0) { + *SelectedMode = 0; + return EFI_UNSUPPORTED; // no mode below ATA_UDMA_MODE_0 + } + + if (TempMode >= *DisUDmaMode) { + TempMode = (UINT16) (*DisUDmaMode - 1); + } + } + + // + // Possible returned mode is between ATA_UDMA_MODE_0 and ATA_UDMA_MODE_5 + // + *SelectedMode = TempMode; + + return EFI_SUCCESS; +} + +/** + The Entry Point of module. It follows the standard UEFI driver model. + + @param[in] ImageHandle The firmware allocated handle for the EFI image. + @param[in] SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The entry point is executed successfully. + @retval other Some error occurs when executing this entry point. + +**/ +EFI_STATUS +EFIAPI +InitializeSataControllerDriver ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + + // + // Install driver model protocol(s). + // + Status = EfiLibInstallDriverBindingComponentName2 ( + ImageHandle, + SystemTable, + &gSataControllerDriverBinding, + ImageHandle, + &gSataControllerComponentName, + &gSataControllerComponentName2 + ); + ASSERT_EFI_ERROR (Status); + + return Status; +} + +/** + Supported function of Driver Binding protocol for this driver. + Test to see if this driver supports ControllerHandle. + + @param This Protocol instance pointer. + @param Controller Handle of device to test. + @param RemainingDevicePath A pointer to the device path. + it should be ignored by device driver. + + @retval EFI_SUCCESS This driver supports this device. + @retval EFI_ALREADY_STARTED This driver is already running on this device. + @retval other This driver does not support this device. + +**/ +EFI_STATUS +EFIAPI +SataControllerSupported ( + IN EFI_DRIVER_BINDING_PROTOCOL *This, + IN EFI_HANDLE Controller, + IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath + ) +{ + EFI_STATUS Status; + EFI_PCI_IO_PROTOCOL *PciIo; + PCI_TYPE00 PciData; + + // + // Attempt to open PCI I/O Protocol + // + Status = gBS->OpenProtocol ( + Controller, + &gEfiPciIoProtocolGuid, + (VOID **) &PciIo, + This->DriverBindingHandle, + Controller, + EFI_OPEN_PROTOCOL_GET_PROTOCOL + ); + 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 SATA controller + // + Status = PciIo->Pci.Read ( + PciIo, + EfiPciIoWidthUint8, + PCI_CLASSCODE_OFFSET, + sizeof (PciData.Hdr.ClassCode), + PciData.Hdr.ClassCode + ); + if (EFI_ERROR (Status)) { + return EFI_UNSUPPORTED; + } + + if (IS_PCI_IDE (&PciData) || IS_PCI_SATADPA (&PciData)) { + return EFI_SUCCESS; + } + + return EFI_UNSUPPORTED; +} + +/** + This routine is called right after the .Supported() called and + Start this driver on ControllerHandle. + + @param This Protocol instance pointer. + @param Controller Handle of device to bind driver to. + @param RemainingDevicePath A pointer to the device path. + it should be ignored by device driver. + + @retval EFI_SUCCESS This driver is added to this device. + @retval EFI_ALREADY_STARTED This driver is already running on this device. + @retval other Some error occurs when binding this driver to this device. + +**/ +EFI_STATUS +EFIAPI +SataControllerStart ( + IN EFI_DRIVER_BINDING_PROTOCOL *This, + IN EFI_HANDLE Controller, + IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath + ) +{ + EFI_STATUS Status; + EFI_PCI_IO_PROTOCOL *PciIo; + PCI_TYPE00 PciData; + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + UINT32 Data32; + UINTN ChannelDeviceCount; + + DEBUG ((EFI_D_INFO, "SataControllerStart START\n")); + + SataPrivateData = NULL; + + // + // Now test and open PCI I/O Protocol + // + Status = gBS->OpenProtocol ( + Controller, + &gEfiPciIoProtocolGuid, + (VOID **) &PciIo, + This->DriverBindingHandle, + Controller, + EFI_OPEN_PROTOCOL_BY_DRIVER + ); + if (EFI_ERROR (Status)) { + DEBUG ((EFI_D_ERROR, "SataControllerStart error return status = %r\n", Status)); + return Status; + } + + // + // Allocate Sata Private Data structure + // + SataPrivateData = AllocateZeroPool (sizeof (EFI_SATA_CONTROLLER_PRIVATE_DATA)); + if (SataPrivateData == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + // + // Initialize Sata Private Data + // + SataPrivateData->Signature = SATA_CONTROLLER_SIGNATURE; + SataPrivateData->PciIo = PciIo; + SataPrivateData->IdeInit.GetChannelInfo = IdeInitGetChannelInfo; + SataPrivateData->IdeInit.NotifyPhase = IdeInitNotifyPhase; + SataPrivateData->IdeInit.SubmitData = IdeInitSubmitData; + SataPrivateData->IdeInit.DisqualifyMode = IdeInitDisqualifyMode; + SataPrivateData->IdeInit.CalculateMode = IdeInitCalculateMode; + SataPrivateData->IdeInit.SetTiming = IdeInitSetTiming; + SataPrivateData->IdeInit.EnumAll = SATA_ENUMER_ALL; + + Status = PciIo->Pci.Read ( + PciIo, + EfiPciIoWidthUint8, + PCI_CLASSCODE_OFFSET, + sizeof (PciData.Hdr.ClassCode), + PciData.Hdr.ClassCode + ); + ASSERT_EFI_ERROR (Status); + + if (IS_PCI_IDE (&PciData)) { + SataPrivateData->IdeInit.ChannelCount = IDE_MAX_CHANNEL; + SataPrivateData->DeviceCount = IDE_MAX_DEVICES; + } else if (IS_PCI_SATADPA (&PciData)) { + // + // Read Host Capability Register(CAP) to get Number of Ports(NPS) and Supports Port Multiplier(SPM) + // NPS is 0's based value indicating the maximum number of ports supported by the HBA silicon. + // A maximum of 32 ports can be supported. A value of '0h', indicating one port, is the minimum requirement. + // + Data32 = AhciReadReg (PciIo, R_AHCI_CAP); + SataPrivateData->IdeInit.ChannelCount = (UINT8) ((Data32 & B_AHCI_CAP_NPS) + 1); + SataPrivateData->DeviceCount = AHCI_MAX_DEVICES; + if ((Data32 & B_AHCI_CAP_SPM) == B_AHCI_CAP_SPM) { + SataPrivateData->DeviceCount = AHCI_MULTI_MAX_DEVICES; + } + } + + ChannelDeviceCount = (UINTN) (SataPrivateData->IdeInit.ChannelCount) * (UINTN) (SataPrivateData->DeviceCount); + SataPrivateData->DisqualifiedModes = AllocateZeroPool ((sizeof (EFI_ATA_COLLECTIVE_MODE)) * ChannelDeviceCount); + if (SataPrivateData->DisqualifiedModes == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + SataPrivateData->IdentifyData = AllocateZeroPool ((sizeof (EFI_IDENTIFY_DATA)) * ChannelDeviceCount); + if (SataPrivateData->IdentifyData == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + SataPrivateData->IdentifyValid = AllocateZeroPool ((sizeof (BOOLEAN)) * ChannelDeviceCount); + if (SataPrivateData->IdentifyValid == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto Done; + } + + // + // Install IDE Controller Init Protocol to this instance + // + Status = gBS->InstallMultipleProtocolInterfaces ( + &Controller, + &gEfiIdeControllerInitProtocolGuid, + &(SataPrivateData->IdeInit), + NULL + ); + +Done: + if (EFI_ERROR (Status)) { + + gBS->CloseProtocol ( + Controller, + &gEfiPciIoProtocolGuid, + This->DriverBindingHandle, + Controller + ); + if (SataPrivateData != NULL) { + if (SataPrivateData->DisqualifiedModes != NULL) { + FreePool (SataPrivateData->DisqualifiedModes); + } + if (SataPrivateData->IdentifyData != NULL) { + FreePool (SataPrivateData->IdentifyData); + } + if (SataPrivateData->IdentifyValid != NULL) { + FreePool (SataPrivateData->IdentifyValid); + } + FreePool (SataPrivateData); + } + } + + DEBUG ((EFI_D_INFO, "SataControllerStart END status = %r\n", Status)); + + return Status; +} + +/** + Stop this driver on ControllerHandle. + + @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 from this device. + @retval other Some error occurs when removing this driver from this device. + +**/ +EFI_STATUS +EFIAPI +SataControllerStop ( + 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 *IdeInit; + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + + // + // Open the produced protocol + // + Status = gBS->OpenProtocol ( + Controller, + &gEfiIdeControllerInitProtocolGuid, + (VOID **) &IdeInit, + This->DriverBindingHandle, + Controller, + EFI_OPEN_PROTOCOL_GET_PROTOCOL + ); + if (EFI_ERROR (Status)) { + return EFI_UNSUPPORTED; + } + + SataPrivateData = SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS (IdeInit); + ASSERT (SataPrivateData != NULL); + + // + // Uninstall the IDE Controller Init Protocol from this instance + // + Status = gBS->UninstallMultipleProtocolInterfaces ( + Controller, + &gEfiIdeControllerInitProtocolGuid, + &(SataPrivateData->IdeInit), + NULL + ); + if (EFI_ERROR (Status)) { + return Status; + } + + if (SataPrivateData != NULL) { + if (SataPrivateData->DisqualifiedModes != NULL) { + FreePool (SataPrivateData->DisqualifiedModes); + } + if (SataPrivateData->IdentifyData != NULL) { + FreePool (SataPrivateData->IdentifyData); + } + if (SataPrivateData->IdentifyValid != NULL) { + FreePool (SataPrivateData->IdentifyValid); + } + FreePool (SataPrivateData); + } + + // + // Close protocols opened by Sata Controller driver + // + return gBS->CloseProtocol ( + Controller, + &gEfiPciIoProtocolGuid, + This->DriverBindingHandle, + Controller + ); +} + +/** + Calculate the flat array subscript of a (Channel, Device) pair. + + @param[in] SataPrivateData The private data structure corresponding to the + SATA controller that attaches the device for + which the flat array subscript is being + calculated. + + @param[in] Channel The channel (ie. port) number on the SATA + controller that the device is attached to. + + @param[in] Device The device number on the channel. + + @return The flat array subscript suitable for indexing DisqualifiedModes, + IdentifyData, and IdentifyValid. +**/ +STATIC +UINTN +FlatDeviceIndex ( + IN CONST EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData, + IN UINTN Channel, + IN UINTN Device + ) +{ + ASSERT (SataPrivateData != NULL); + ASSERT (Channel < SataPrivateData->IdeInit.ChannelCount); + ASSERT (Device < SataPrivateData->DeviceCount); + + return Channel * SataPrivateData->DeviceCount + Device; +} + +// +// 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 + ) +{ + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + SataPrivateData = SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS (This); + ASSERT (SataPrivateData != NULL); + + if (Channel < This->ChannelCount) { + *Enabled = TRUE; + *MaxDevices = SataPrivateData->DeviceCount; + 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 + ) +{ + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + UINTN DeviceIndex; + + SataPrivateData = SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS (This); + ASSERT (SataPrivateData != NULL); + + if ((Channel >= This->ChannelCount) || (Device >= SataPrivateData->DeviceCount)) { + return EFI_INVALID_PARAMETER; + } + + DeviceIndex = FlatDeviceIndex (SataPrivateData, Channel, Device); + + // + // Make a local copy of device's IdentifyData and mark the valid flag + // + if (IdentifyData != NULL) { + CopyMem ( + &(SataPrivateData->IdentifyData[DeviceIndex]), + IdentifyData, + sizeof (EFI_IDENTIFY_DATA) + ); + + SataPrivateData->IdentifyValid[DeviceIndex] = TRUE; + } else { + SataPrivateData->IdentifyValid[DeviceIndex] = FALSE; + } + + 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 + ) +{ + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + UINTN DeviceIndex; + + SataPrivateData = SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS (This); + ASSERT (SataPrivateData != NULL); + + if ((Channel >= This->ChannelCount) || (BadModes == NULL) || (Device >= SataPrivateData->DeviceCount)) { + return EFI_INVALID_PARAMETER; + } + + DeviceIndex = FlatDeviceIndex (SataPrivateData, Channel, Device); + + // + // Record the disqualified modes per channel per device. From ATA/ATAPI spec, + // if a mode is not supported, the modes higher than it is also not supported. + // + CopyMem ( + &(SataPrivateData->DisqualifiedModes[DeviceIndex]), + BadModes, + sizeof (EFI_ATA_COLLECTIVE_MODE) + ); + + 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 + ) +{ + EFI_SATA_CONTROLLER_PRIVATE_DATA *SataPrivateData; + EFI_IDENTIFY_DATA *IdentifyData; + BOOLEAN IdentifyValid; + EFI_ATA_COLLECTIVE_MODE *DisqualifiedModes; + UINT16 SelectedMode; + EFI_STATUS Status; + UINTN DeviceIndex; + + SataPrivateData = SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS (This); + ASSERT (SataPrivateData != NULL); + + if ((Channel >= This->ChannelCount) || (SupportedModes == NULL) || (Device >= SataPrivateData->DeviceCount)) { + return EFI_INVALID_PARAMETER; + } + + *SupportedModes = AllocateZeroPool (sizeof (EFI_ATA_COLLECTIVE_MODE)); + if (*SupportedModes == NULL) { + ASSERT (*SupportedModes != NULL); + return EFI_OUT_OF_RESOURCES; + } + + DeviceIndex = FlatDeviceIndex (SataPrivateData, Channel, Device); + + IdentifyData = &(SataPrivateData->IdentifyData[DeviceIndex]); + IdentifyValid = SataPrivateData->IdentifyValid[DeviceIndex]; + DisqualifiedModes = &(SataPrivateData->DisqualifiedModes[DeviceIndex]); + + // + // Make sure we've got the valid identify data of the device from SubmitData() + // + if (!IdentifyValid) { + FreePool (*SupportedModes); + return EFI_NOT_READY; + } + + Status = CalculateBestPioMode ( + IdentifyData, + (DisqualifiedModes->PioMode.Valid ? ((UINT16 *) &(DisqualifiedModes->PioMode.Mode)) : NULL), + &SelectedMode + ); + if (!EFI_ERROR (Status)) { + (*SupportedModes)->PioMode.Valid = TRUE; + (*SupportedModes)->PioMode.Mode = SelectedMode; + + } else { + (*SupportedModes)->PioMode.Valid = FALSE; + } + DEBUG ((EFI_D_INFO, "IdeInitCalculateMode: PioMode = %x\n", (*SupportedModes)->PioMode.Mode)); + + Status = CalculateBestUdmaMode ( + IdentifyData, + (DisqualifiedModes->UdmaMode.Valid ? ((UINT16 *) &(DisqualifiedModes->UdmaMode.Mode)) : NULL), + &SelectedMode + ); + + if (!EFI_ERROR (Status)) { + (*SupportedModes)->UdmaMode.Valid = TRUE; + (*SupportedModes)->UdmaMode.Mode = SelectedMode; + + } else { + (*SupportedModes)->UdmaMode.Valid = FALSE; + } + DEBUG ((EFI_D_INFO, "IdeInitCalculateMode: UdmaMode = %x\n", (*SupportedModes)->UdmaMode.Mode)); + + // + // The modes other than PIO and UDMA are not supported + // + 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; +} |