MdeModulePkg: FileExplorerLib: prevent freeing null pointer

[mirror_edk2.git] / MdeModulePkg / Bus / Sd / SdDxe / SdDxe.h

/** @file\r
  Header file for SdDxe Driver.\r
\r
  This file defines common data structures, macro definitions and some module\r
  internal function header files.\r
\r
  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _SD_DXE_H_\r
#define _SD_DXE_H_\r
\r
#include <Uefi.h>\r
#include <IndustryStandard/Sd.h>\r
\r
#include <Protocol/SdMmcPassThru.h>\r
#include <Protocol/BlockIo.h>\r
#include <Protocol/BlockIo2.h>\r
\r
#include <Protocol/DevicePath.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/BaseLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
\r
#include "SdBlockIo.h"\r
//\r
// Global Variables\r
//\r
extern EFI_DRIVER_BINDING_PROTOCOL      gSdDxeDriverBinding;\r
extern EFI_COMPONENT_NAME_PROTOCOL      gSdDxeComponentName;\r
extern EFI_COMPONENT_NAME2_PROTOCOL     gSdDxeComponentName2;\r
\r
#define SD_DEVICE_SIGNATURE             SIGNATURE_32 ('S', 'D', 't', 'f')\r
\r
#define SD_DEVICE_DATA_FROM_BLKIO(a) \\r
    CR(a, SD_DEVICE, BlockIo, SD_DEVICE_SIGNATURE)\r
\r
#define SD_DEVICE_DATA_FROM_BLKIO2(a) \\r
    CR(a, SD_DEVICE, BlockIo2, SD_DEVICE_SIGNATURE)\r
\r
//\r
// Take 2.5 seconds as generic time out value, 1 microsecond as unit.\r
//\r
#define SD_GENERIC_TIMEOUT              2500 * 1000\r
\r
#define SD_REQUEST_SIGNATURE            SIGNATURE_32 ('S', 'D', 'R', 'E')\r
\r
#define SD_MODEL_NAME_MAX_LEN           32\r
\r
typedef struct _SD_DEVICE               SD_DEVICE;\r
typedef struct _SD_DRIVER_PRIVATE_DATA  SD_DRIVER_PRIVATE_DATA;\r
\r
//\r
// Asynchronous I/O request.\r
//\r
typedef struct {\r
  UINT32                                Signature;\r
  LIST_ENTRY                            Link;\r
\r
  EFI_SD_MMC_COMMAND_BLOCK              SdMmcCmdBlk;\r
  EFI_SD_MMC_STATUS_BLOCK               SdMmcStatusBlk;\r
  EFI_SD_MMC_PASS_THRU_COMMAND_PACKET   Packet;\r
\r
  BOOLEAN                               IsEnd;\r
\r
  EFI_BLOCK_IO2_TOKEN                   *Token;\r
\r
  EFI_EVENT                             Event;\r
} SD_REQUEST;\r
\r
#define SD_REQUEST_FROM_LINK(a) \\r
    CR(a, SD_REQUEST, Link, SD_REQUEST_SIGNATURE)\r
\r
struct _SD_DEVICE {\r
  UINT32                                Signature;\r
  EFI_HANDLE                            Handle;\r
  EFI_DEVICE_PATH_PROTOCOL              *DevicePath;\r
  UINT8                                 Slot;\r
  BOOLEAN                               SectorAddressing;\r
  EFI_BLOCK_IO_PROTOCOL                 BlockIo;\r
  EFI_BLOCK_IO2_PROTOCOL                BlockIo2;\r
  EFI_BLOCK_IO_MEDIA                    BlockMedia;\r
\r
  LIST_ENTRY                            Queue;\r
\r
  SD_CSD                                Csd;\r
  SD_CID                                Cid;\r
  EFI_UNICODE_STRING_TABLE              *ControllerNameTable;\r
  //\r
  // The model name consists of three fields in CID register\r
  // 1) OEM/Application ID (2 bytes)\r
  // 2) Product Name       (5 bytes)\r
  // 3) Product Serial Number (4 bytes)\r
  // The delimiters of these fields are whitespace.\r
  //\r
  CHAR16                                ModelName[SD_MODEL_NAME_MAX_LEN];\r
  SD_DRIVER_PRIVATE_DATA                *Private;\r
} ;\r
\r
//\r
// SD DXE driver private data structure\r
//\r
struct _SD_DRIVER_PRIVATE_DATA {\r
  EFI_SD_MMC_PASS_THRU_PROTOCOL         *PassThru;\r
  EFI_HANDLE                            Controller;\r
  EFI_DEVICE_PATH_PROTOCOL              *ParentDevicePath;\r
  EFI_HANDLE                            DriverBindingHandle;\r
} ;\r
\r
/**\r
  Tests to see if this driver supports a given controller. If a child device is provided,\r
  it further tests to see if this driver supports creating a handle for the specified child device.\r
\r
  This function checks to see if the driver specified by This supports the device specified by\r
  ControllerHandle. Drivers will typically use the device path attached to\r
  ControllerHandle and/or the services from the bus I/O abstraction attached to\r
  ControllerHandle to determine if the driver supports ControllerHandle. This function\r
  may be called many times during platform initialization. In order to reduce boot times, the tests\r
  performed by this function must be very small, and take as little time as possible to execute. This\r
  function must not change the state of any hardware devices, and this function must be aware that the\r
  device specified by ControllerHandle may already be managed by the same driver or a\r
  different driver. This function must match its calls to AllocatePages() with FreePages(),\r
  AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().\r
  Since ControllerHandle may have been previously started by the same driver, if a protocol is\r
  already in the opened state, then it must not be closed with CloseProtocol(). This is required\r
  to guarantee the state of ControllerHandle is not modified by this function.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to test. 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.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For bus drivers, if this parameter is not NULL, then\r
                                   the bus driver must determine if the bus controller specified\r
                                   by ControllerHandle and the child controller specified\r
                                   by RemainingDevicePath are both supported by this\r
                                   bus driver.\r
\r
  @retval EFI_SUCCESS              The device specified by ControllerHandle and\r
                                   RemainingDevicePath is supported by the driver specified by This.\r
  @retval EFI_ALREADY_STARTED      The device specified by ControllerHandle and\r
                                   RemainingDevicePath is already being managed by the driver\r
                                   specified by This.\r
  @retval EFI_ACCESS_DENIED        The device specified by ControllerHandle and\r
                                   RemainingDevicePath is already being managed by a different\r
                                   driver or an application that requires exclusive access.\r
                                   Currently not implemented.\r
  @retval EFI_UNSUPPORTED          The device specified by ControllerHandle and\r
                                   RemainingDevicePath is not supported by the driver specified by This.\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdDxeDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL   *This,\r
  IN EFI_HANDLE                    Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL      *RemainingDevicePath\r
  );\r
\r
/**\r
  Starts a device controller or a bus controller.\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,\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.\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.  This\r
                                   parameter is ignored by device drivers, and is optional for bus\r
                                   drivers. For a bus driver, if this parameter is NULL, then handles\r
                                   for all the children of Controller are created by this driver.\r
                                   If this parameter is not NULL and the first Device Path Node is\r
                                   not the End of Device Path Node, then only the handle for the\r
                                   child device specified by the first Device Path Node of\r
                                   RemainingDevicePath is created by this driver.\r
                                   If the first Device Path Node of RemainingDevicePath is\r
                                   the End of Device Path Node, no child handle is created by this\r
                                   driver.\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.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
**/\r
EFI_STATUS\r
EFIAPI\r
SdDxeDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL   *This,\r
  IN EFI_HANDLE                    Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL      *RemainingDevicePath\r
  );\r
\r
/**\r
  Stops a device controller or a bus controller.\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
**/\r
EFI_STATUS\r
EFIAPI\r
SdDxeDriverBindingStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL     *This,\r
  IN  EFI_HANDLE                      Controller,\r
  IN  UINTN                           NumberOfChildren,\r
  IN  EFI_HANDLE                      *ChildHandleBuffer\r
  );\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the driver.\r
\r
  This function retrieves the user readable name of a driver in the form of a\r
  Unicode string. If the driver specified by This has a user readable name in\r
  the language specified by Language, then a pointer to the driver name is\r
  returned in DriverName, and EFI_SUCCESS is returned. If the driver specified\r
  by This does not support the language specified by Language,\r
  then EFI_UNSUPPORTED is returned.\r
\r
  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  Language[in]          A pointer to a Null-terminated ASCII string\r
                                array indicating the language. This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified\r
                                in RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  DriverName[out]       A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                driver specified by This in the language\r
                                specified by Language.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the Driver specified by\r
                                This and the language specified by Language was\r
                                returned in DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdDxeComponentNameGetDriverName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL  *This,\r
  IN  CHAR8                        *Language,\r
  OUT CHAR16                       **DriverName\r
  );\r
\r
/**\r
  Retrieves a Unicode string that is the user readable name of the controller\r
  that is being managed by a driver.\r
\r
  This function retrieves the user readable name of the controller specified by\r
  ControllerHandle and ChildHandle in the form of a Unicode string. If the\r
  driver specified by This has a user readable name in the language specified by\r
  Language, then a pointer to the controller name is returned in ControllerName,\r
  and EFI_SUCCESS is returned.  If the driver specified by This is not currently\r
  managing the controller specified by ControllerHandle and ChildHandle,\r
  then EFI_UNSUPPORTED is returned.  If the driver specified by This does not\r
  support the language specified by Language, then EFI_UNSUPPORTED is returned.\r
\r
  @param  This[in]              A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or\r
                                EFI_COMPONENT_NAME_PROTOCOL instance.\r
\r
  @param  ControllerHandle[in]  The handle of a controller that the driver\r
                                specified by This is managing.  This handle\r
                                specifies the controller whose name is to be\r
                                returned.\r
\r
  @param  ChildHandle[in]       The handle of the child controller to retrieve\r
                                the name of.  This is an optional parameter that\r
                                may be NULL.  It will be NULL for device\r
                                drivers.  It will also be NULL for a bus drivers\r
                                that wish to retrieve the name of the bus\r
                                controller.  It will not be NULL for a bus\r
                                driver that wishes to retrieve the name of a\r
                                child controller.\r
\r
  @param  Language[in]          A pointer to a Null-terminated ASCII string\r
                                array indicating the language.  This is the\r
                                language of the driver name that the caller is\r
                                requesting, and it must match one of the\r
                                languages specified in SupportedLanguages. The\r
                                number of languages supported by a driver is up\r
                                to the driver writer. Language is specified in\r
                                RFC 4646 or ISO 639-2 language code format.\r
\r
  @param  ControllerName[out]   A pointer to the Unicode string to return.\r
                                This Unicode string is the name of the\r
                                controller specified by ControllerHandle and\r
                                ChildHandle in the language specified by\r
                                Language from the point of view of the driver\r
                                specified by This.\r
\r
  @retval EFI_SUCCESS           The Unicode string for the user readable name in\r
                                the language specified by Language for the\r
                                driver specified by This was returned in\r
                                DriverName.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
                                EFI_HANDLE.\r
\r
  @retval EFI_INVALID_PARAMETER Language is NULL.\r
\r
  @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This is not currently\r
                                managing the controller specified by\r
                                ControllerHandle and ChildHandle.\r
\r
  @retval EFI_UNSUPPORTED       The driver specified by This does not support\r
                                the language specified by Language.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
SdDxeComponentNameGetControllerName (\r
  IN  EFI_COMPONENT_NAME_PROTOCOL                     *This,\r
  IN  EFI_HANDLE                                      ControllerHandle,\r
  IN  EFI_HANDLE                                      ChildHandle        OPTIONAL,\r
  IN  CHAR8                                           *Language,\r
  OUT CHAR16                                          **ControllerName\r
  );\r
\r
/**\r
  Send command SET_RELATIVE_ADDRESS to the device to set the device address.\r
\r
  @param[in]  Device            A pointer to the SD_DEVICE instance.\r
  @param[out] Rca               The relative device address to assign.\r
\r
  @retval EFI_SUCCESS           The request is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be executed due to a lack of resources.\r
  @retval Others                The request could not be executed successfully.\r
\r
**/\r
EFI_STATUS\r
SdSetRca (\r
  IN     SD_DEVICE              *Device,\r
     OUT UINT16                 *Rca\r
  );\r
\r
/**\r
  Send command SELECT to the device to select/deselect the device.\r
\r
  @param[in]  Device            A pointer to the SD_DEVICE instance.\r
  @param[in]  Rca               The relative device address to use.\r
\r
  @retval EFI_SUCCESS           The request is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be executed due to a lack of resources.\r
  @retval Others                The request could not be executed successfully.\r
\r
**/\r
EFI_STATUS\r
SdSelect (\r
  IN     SD_DEVICE              *Device,\r
  IN     UINT16                 Rca\r
  );\r
\r
/**\r
  Send command SEND_STATUS to the device to get device status.\r
\r
  @param[in]  Device            A pointer to the SD_DEVICE instance.\r
  @param[in]  Rca               The relative device address to use.\r
  @param[out] DevStatus         The buffer to store the device status.\r
  @retval EFI_SUCCESS           The request is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be executed due to a lack of resources.\r
  @retval Others                The request could not be executed successfully.\r
\r
**/\r
EFI_STATUS\r
SdSendStatus (\r
  IN     SD_DEVICE              *Device,\r
  IN     UINT16                 Rca,\r
     OUT UINT32                 *DevStatus\r
  );\r
\r
/**\r
  Send command SEND_CSD to the device to get the CSD register data.\r
\r
  @param[in]  Device            A pointer to the SD_DEVICE instance.\r
  @param[in]  Rca               The relative device address to use.\r
  @param[out] Csd               The buffer to store the SD_CSD register data.\r
\r
  @retval EFI_SUCCESS           The request is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be executed due to a lack of resources.\r
  @retval Others                The request could not be executed successfully.\r
\r
**/\r
EFI_STATUS\r
SdGetCsd (\r
  IN     SD_DEVICE              *Device,\r
  IN     UINT16                 Rca,\r
     OUT SD_CSD                 *Csd\r
  );\r
\r
/**\r
  Send command SEND_CID to the device to get the CID register data.\r
\r
  @param[in]  Device            A pointer to the SD_DEVICE instance.\r
  @param[in]  Rca               The relative device address to use.\r
  @param[out] Cid               The buffer to store the SD_CID register data.\r
\r
  @retval EFI_SUCCESS           The request is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  The request could not be executed due to a lack of resources.\r
  @retval Others                The request could not be executed successfully.\r
\r
**/\r
EFI_STATUS\r
SdGetCid (\r
  IN     SD_DEVICE              *Device,\r
  IN     UINT16                 Rca,\r
     OUT SD_CID                 *Cid\r
  );\r
\r
#endif\r
\r