+++ /dev/null
-/** @file\r
- IsaIo UEFI driver.\r
-\r
- Produce an instance of the ISA I/O Protocol for every SIO controller.\r
-\r
-Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include "IsaDriver.h"\r
-\r
-//\r
-// IsaIo Driver Global Variables\r
-//\r
-EFI_DRIVER_BINDING_PROTOCOL gIsaIoDriver = {\r
- IsaIoDriverSupported,\r
- IsaIoDriverStart,\r
- IsaIoDriverStop,\r
- 0xa,\r
- NULL,\r
- NULL\r
-};\r
-\r
-/**\r
- The main entry point for the IsaIo driver.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
- @param[in] SystemTable A pointer to the EFI System Table.\r
-\r
- @retval EFI_SUCCESS The entry point is executed successfully.\r
- @retval EFI_OUT_OF_RESOURCES There was not enough memory in pool to install all the protocols.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InitializeIsaIo (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Install driver model protocol(s).\r
- //\r
- Status = EfiLibInstallDriverBindingComponentName2 (\r
- ImageHandle,\r
- SystemTable,\r
- &gIsaIoDriver,\r
- ImageHandle,\r
- &gIsaIoComponentName,\r
- &gIsaIoComponentName2\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Tests to see if a controller can be managed by the IsaIo driver.\r
-\r
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
- @param[in] Controller The handle of the controller to test.\r
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
-\r
- @retval EFI_SUCCESS The device is supported by this driver.\r
- @retval EFI_ALREADY_STARTED The device is already being managed by this driver.\r
- @retval EFI_ACCESS_DENIED The device is already being managed by a different driver\r
- or an application that requires exclusive access.\r
- @retval EFI_UNSUPPORTED The device is is not supported by this driver.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoDriverSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_SIO_PROTOCOL *Sio;\r
- EFI_HANDLE PciHandle;\r
-\r
- //\r
- // Try to open EFI DEVICE PATH protocol on the controller\r
- //\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &DevicePath,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Get the PciIo protocol from its parent controller.\r
- //\r
- Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &DevicePath, &PciHandle);\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Try to open the Super IO protocol on the controller\r
- //\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiSioProtocolGuid,\r
- (VOID **) &Sio,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiSioProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Start this driver on ControllerHandle.\r
-\r
- The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
- As a result, much of the error checking on the parameters to Start() has been moved into this\r
- common boot service. It is legal to call Start() from other locations, but the following calling\r
- restrictions must be followed or the system behavior will not be deterministic.\r
- 1. ControllerHandle must be a valid EFI_HANDLE.\r
- 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
- EFI_DEVICE_PATH_PROTOCOL.\r
- 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
- have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
-\r
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
- @param[in] ControllerHandle The handle of the controller to start. This handle\r
- must support a protocol interface that supplies\r
- an I/O abstraction to the driver.\r
- @param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
- This parameter is ignored by device drivers, and is optional for bus drivers.\r
-\r
- @retval EFI_SUCCESS The device was started.\r
- @retval EFI_DEVICE_ERROR The device could not be started due to a device error.\r
- Currently not implemented.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
- @retval Others The driver failded to start the device.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoDriverStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_PCI_IO_PROTOCOL *PciIo;\r
- EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
- EFI_HANDLE PciHandle;\r
- EFI_SIO_PROTOCOL *Sio;\r
- ACPI_RESOURCE_HEADER_PTR Resources;\r
- EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- PciIo = NULL;\r
- Sio = NULL;\r
-\r
- //\r
- // Open Device Path Protocol\r
- //\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &DevicePath,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Get the PciIo protocol from its parent controller.\r
- //\r
- TempDevicePath = DevicePath;\r
- Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &TempDevicePath, &PciHandle);\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->HandleProtocol (PciHandle, &gEfiPciIoProtocolGuid, (VOID **) &PciIo);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Open Super IO Protocol\r
- //\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiSioProtocolGuid,\r
- (VOID **) &Sio,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // Fail due to LocateDevicePath(...) or OpenProtocol(Sio, BY_DRIVER)\r
- //\r
- return Status;\r
- }\r
-\r
- Status = Sio->GetResources (Sio, &Resources);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- IsaIoDevice = AllocatePool (sizeof (ISA_IO_DEVICE));\r
- ASSERT (IsaIoDevice != NULL);\r
-\r
- IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE;\r
- IsaIoDevice->PciIo = PciIo;\r
-\r
- //\r
- // Initialize the ISA I/O instance structure\r
- //\r
- InitializeIsaIoInstance (IsaIoDevice, DevicePath, Resources);\r
-\r
- //\r
- // Install the ISA I/O protocol on the Controller handle\r
- //\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &Controller,\r
- &gEfiIsaIoProtocolGuid,\r
- &IsaIoDevice->IsaIo,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Stop this driver on ControllerHandle.\r
-\r
- The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
- As a result, much of the error checking on the parameters to Stop() has been moved\r
- into this common boot service. It is legal to call Stop() from other locations,\r
- but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
- 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
- same driver's Start() function.\r
- 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
- EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
- Start() function, and the Start() function must have called OpenProtocol() on\r
- ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
-\r
- @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
- @param[in] ControllerHandle A handle to the device being stopped. The handle must\r
- support a bus specific I/O protocol for the driver\r
- to use to stop the device.\r
- @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
- @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r
- if NumberOfChildren is 0.\r
-\r
- @retval EFI_SUCCESS The device was stopped.\r
- @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoDriverStop (\r
- IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
- IN EFI_HANDLE Controller,\r
- IN UINTN NumberOfChildren,\r
- IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
- EFI_ISA_IO_PROTOCOL *IsaIo;\r
-\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiIsaIoProtocolGuid,\r
- (VOID **) &IsaIo,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo);\r
-\r
- Status = gBS->UninstallMultipleProtocolInterfaces (\r
- Controller,\r
- &gEfiIsaIoProtocolGuid,\r
- &IsaIoDevice->IsaIo,\r
- NULL\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Status = gBS->CloseProtocol (\r
- Controller,\r
- &gEfiSioProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
- FreePool (IsaIoDevice->IsaIo.ResourceList);\r
- FreePool (IsaIoDevice);\r
- }\r
-\r
- return Status;\r
-}\r
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