[mirror_edk2.git] / EmbeddedPkg / Universal / MmcDxe / Mmc.c

/** @file\r
  Main file of the MMC Dxe driver. The driver entrypoint is defined into this file.\r
\r
  Copyright (c) 2011-2013, ARM Limited. All rights reserved.\r
  \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
#include <Protocol/DevicePath.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/DevicePathLib.h>\r
\r
#include "Mmc.h"\r
\r
EFI_BLOCK_IO_MEDIA mMmcMediaTemplate = {\r
  SIGNATURE_32('m','m','c','o'),            // MediaId\r
  TRUE,                                     // RemovableMedia\r
  FALSE,                                    // MediaPresent\r
  FALSE,                                    // LogicalPartition\r
  FALSE,                                    // ReadOnly\r
  FALSE,                                    // WriteCaching\r
  512,                                      // BlockSize\r
  4,                                        // IoAlign\r
  0,                                        // Pad\r
  0                                         // LastBlock\r
};\r
\r
//\r
// This device structure is serviced as a header.\r
// Its next field points to the first root bridge device node.\r
//\r
LIST_ENTRY  mMmcHostPool;\r
\r
/**\r
  Event triggered by the timer to check if any cards have been removed\r
  or if new ones have been plugged in\r
**/\r
\r
EFI_EVENT gCheckCardsEvent;\r
\r
/**\r
  Initialize the MMC Host Pool to support multiple MMC devices\r
**/\r
VOID\r
InitializeMmcHostPool (\r
  VOID\r
  )\r
{\r
  InitializeListHead (&mMmcHostPool);\r
}\r
\r
/**\r
  Insert a new Mmc Host controller to the pool\r
**/\r
VOID\r
InsertMmcHost (\r
  IN MMC_HOST_INSTANCE      *MmcHostInstance\r
  )\r
{\r
  InsertTailList (&mMmcHostPool, &(MmcHostInstance->Link));\r
}\r
\r
/*\r
  Remove a new Mmc Host controller to the pool\r
*/\r
VOID\r
RemoveMmcHost (\r
  IN MMC_HOST_INSTANCE      *MmcHostInstance\r
  )\r
{\r
  RemoveEntryList (&(MmcHostInstance->Link));\r
}\r
\r
MMC_HOST_INSTANCE* CreateMmcHostInstance (\r
  IN EFI_MMC_HOST_PROTOCOL* MmcHost\r
  )\r
{\r
  EFI_STATUS          Status;\r
  MMC_HOST_INSTANCE*  MmcHostInstance;\r
  EFI_DEVICE_PATH_PROTOCOL    *NewDevicePathNode;\r
  EFI_DEVICE_PATH_PROTOCOL    *DevicePath;\r
\r
  MmcHostInstance = AllocateZeroPool (sizeof (MMC_HOST_INSTANCE));\r
  if (MmcHostInstance == NULL) {\r
    return NULL;\r
  }\r
\r
  MmcHostInstance->Signature = MMC_HOST_INSTANCE_SIGNATURE;\r
\r
  MmcHostInstance->State = MmcHwInitializationState;\r
\r
  MmcHostInstance->BlockIo.Media = AllocateCopyPool (sizeof(EFI_BLOCK_IO_MEDIA), &mMmcMediaTemplate);\r
  if (MmcHostInstance->BlockIo.Media == NULL) {\r
    goto FREE_INSTANCE;\r
  }\r
\r
  MmcHostInstance->BlockIo.Revision = EFI_BLOCK_IO_INTERFACE_REVISION;\r
  MmcHostInstance->BlockIo.Reset = MmcReset;\r
  MmcHostInstance->BlockIo.ReadBlocks = MmcReadBlocks;\r
  MmcHostInstance->BlockIo.WriteBlocks = MmcWriteBlocks;\r
  MmcHostInstance->BlockIo.FlushBlocks = MmcFlushBlocks;\r
\r
  MmcHostInstance->MmcHost = MmcHost;\r
\r
  // Create DevicePath for the new MMC Host\r
  Status = MmcHost->BuildDevicePath (MmcHost, &NewDevicePathNode);\r
  if (EFI_ERROR (Status)) {\r
    goto FREE_MEDIA;\r
  }\r
\r
  DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) AllocatePool (END_DEVICE_PATH_LENGTH);\r
  if (DevicePath == NULL) {\r
    goto FREE_MEDIA;\r
  }\r
\r
  SetDevicePathEndNode (DevicePath);\r
  MmcHostInstance->DevicePath = AppendDevicePathNode (DevicePath, NewDevicePathNode);\r
\r
  // Publish BlockIO protocol interface\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                &MmcHostInstance->MmcHandle,\r
                &gEfiBlockIoProtocolGuid,&MmcHostInstance->BlockIo,\r
                &gEfiDevicePathProtocolGuid,MmcHostInstance->DevicePath,\r
                NULL\r
                );\r
  if (EFI_ERROR(Status)) {\r
    goto FREE_DEVICE_PATH;\r
  }\r
\r
  return MmcHostInstance;\r
\r
FREE_DEVICE_PATH:\r
  FreePool(DevicePath);\r
\r
FREE_MEDIA:\r
  FreePool(MmcHostInstance->BlockIo.Media);\r
\r
FREE_INSTANCE:\r
  FreePool(MmcHostInstance);\r
\r
  return NULL;\r
}\r
\r
EFI_STATUS DestroyMmcHostInstance (\r
  IN MMC_HOST_INSTANCE* MmcHostInstance\r
  )\r
{\r
  EFI_STATUS Status;\r
\r
  // Uninstall Protocol Interfaces\r
  Status = gBS->UninstallMultipleProtocolInterfaces (\r
        MmcHostInstance->MmcHandle,\r
        &gEfiBlockIoProtocolGuid,&(MmcHostInstance->BlockIo),\r
        &gEfiDevicePathProtocolGuid,MmcHostInstance->DevicePath,\r
        NULL\r
        );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Free Memory allocated for the instance\r
  if (MmcHostInstance->BlockIo.Media) {\r
    FreePool(MmcHostInstance->BlockIo.Media);\r
  }\r
  FreePool (MmcHostInstance);\r
\r
  return Status;\r
}\r
\r
/**\r
  This function checks if the controller implement the Mmc Host and the Device Path Protocols\r
**/\r
EFI_STATUS\r
EFIAPI\r
MmcDriverBindingSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,\r
  IN EFI_HANDLE                     Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath\r
  )\r
{\r
  EFI_STATUS                      Status;\r
  //EFI_DEVICE_PATH_PROTOCOL        *ParentDevicePath;\r
  EFI_MMC_HOST_PROTOCOL           *MmcHost;\r
  EFI_DEV_PATH_PTR                Node;\r
\r
  //\r
  // Check RemainingDevicePath validation\r
  //\r
  if (RemainingDevicePath != NULL) {\r
    //\r
    // Check if RemainingDevicePath is the End of Device Path Node,\r
    // if yes, go on checking other conditions\r
    //\r
    if (!IsDevicePathEnd (RemainingDevicePath)) {\r
      //\r
      // If RemainingDevicePath isn't the End of Device Path Node,\r
      // check its validation\r
      //\r
      Node.DevPath = RemainingDevicePath;\r
      if (Node.DevPath->Type != HARDWARE_DEVICE_PATH ||\r
        Node.DevPath->SubType != HW_VENDOR_DP      ||\r
        DevicePathNodeLength(Node.DevPath) != sizeof(VENDOR_DEVICE_PATH)) {\r
          return EFI_UNSUPPORTED;\r
      }\r
    }\r
  }\r
\r
  //\r
  // Check if Mmc Host protocol is installed by platform\r
  //\r
  Status = gBS->OpenProtocol (\r
                Controller,\r
                &gEfiMmcHostProtocolGuid,\r
                (VOID **) &MmcHost,\r
                This->DriverBindingHandle,\r
                Controller,\r
                EFI_OPEN_PROTOCOL_BY_DRIVER\r
                );\r
  if (Status == EFI_ALREADY_STARTED) {\r
    return EFI_SUCCESS;\r
  }\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Close the Mmc Host used to perform the supported test\r
  //\r
  gBS->CloseProtocol (\r
      Controller,\r
      &gEfiMmcHostProtocolGuid,\r
      This->DriverBindingHandle,\r
      Controller\r
      );\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  \r
**/\r
EFI_STATUS\r
EFIAPI\r
MmcDriverBindingStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath\r
  )\r
{\r
  EFI_STATUS              Status;\r
  MMC_HOST_INSTANCE       *MmcHostInstance;\r
  EFI_MMC_HOST_PROTOCOL   *MmcHost;\r
\r
  //\r
  // Check RemainingDevicePath validation\r
  //\r
  if (RemainingDevicePath != NULL) {\r
    //\r
    // Check if RemainingDevicePath is the End of Device Path Node,\r
    // if yes, return EFI_SUCCESS\r
    //\r
    if (IsDevicePathEnd (RemainingDevicePath)) {\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  //\r
  // Get the Mmc Host protocol\r
  //\r
  Status = gBS->OpenProtocol (\r
                Controller,\r
                &gEfiMmcHostProtocolGuid,\r
                (VOID **) &MmcHost,\r
                This->DriverBindingHandle,\r
                Controller,\r
                EFI_OPEN_PROTOCOL_BY_DRIVER\r
                );\r
  if (EFI_ERROR (Status)) {\r
    if (Status == EFI_ALREADY_STARTED) {\r
      return EFI_SUCCESS;\r
    }\r
    return Status;\r
  }\r
\r
  MmcHostInstance = CreateMmcHostInstance(MmcHost);\r
  if (MmcHostInstance != NULL) {\r
    // Add the handle to the pool\r
    InsertMmcHost (MmcHostInstance);\r
\r
    MmcHostInstance->Initialized = FALSE;\r
\r
    // Detect card presence now\r
    CheckCardsCallback (NULL, NULL);\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  \r
**/\r
EFI_STATUS\r
EFIAPI\r
MmcDriverBindingStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL   *This,\r
  IN  EFI_HANDLE                    Controller,\r
  IN  UINTN                         NumberOfChildren,\r
  IN  EFI_HANDLE                    *ChildHandleBuffer\r
  )\r
{\r
  EFI_STATUS          Status = EFI_SUCCESS;\r
  LIST_ENTRY          *CurrentLink;\r
  MMC_HOST_INSTANCE   *MmcHostInstance;\r
\r
  MMC_TRACE("MmcDriverBindingStop()");\r
\r
  // For each MMC instance\r
  CurrentLink = mMmcHostPool.ForwardLink;\r
  while (CurrentLink != NULL && CurrentLink != &mMmcHostPool && (Status == EFI_SUCCESS)) {\r
    MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);\r
    ASSERT(MmcHostInstance != NULL);\r
\r
    // Close gEfiMmcHostProtocolGuid\r
    Status = gBS->CloseProtocol (\r
                Controller,\r
                &gEfiMmcHostProtocolGuid,(VOID **) &MmcHostInstance->MmcHost,\r
                This->DriverBindingHandle\r
                );\r
\r
    // Remove MMC Host Instance from the pool\r
    RemoveMmcHost (MmcHostInstance);\r
\r
    // Destroy MmcHostInstance\r
    DestroyMmcHostInstance (MmcHostInstance);\r
  }\r
\r
  return Status;\r
}\r
\r
VOID\r
EFIAPI\r
CheckCardsCallback (\r
  IN  EFI_EVENT   Event,\r
  IN  VOID        *Context\r
  )\r
{\r
  LIST_ENTRY          *CurrentLink;\r
  MMC_HOST_INSTANCE   *MmcHostInstance;\r
  EFI_STATUS          Status;\r
\r
  CurrentLink = mMmcHostPool.ForwardLink;\r
  while (CurrentLink != NULL && CurrentLink != &mMmcHostPool) {\r
    MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);\r
    ASSERT(MmcHostInstance != NULL);\r
\r
    if (MmcHostInstance->MmcHost->IsCardPresent (MmcHostInstance->MmcHost) == !MmcHostInstance->Initialized) {\r
      MmcHostInstance->State = MmcHwInitializationState;\r
      MmcHostInstance->BlockIo.Media->MediaPresent = !MmcHostInstance->Initialized;\r
      MmcHostInstance->Initialized = !MmcHostInstance->Initialized;\r
\r
      if (MmcHostInstance->BlockIo.Media->MediaPresent) {\r
        InitializeMmcDevice (MmcHostInstance);\r
      }\r
\r
      Status = gBS->ReinstallProtocolInterface (\r
                    (MmcHostInstance->MmcHandle),\r
                    &gEfiBlockIoProtocolGuid,\r
                    &(MmcHostInstance->BlockIo),\r
                    &(MmcHostInstance->BlockIo)\r
                    );\r
\r
      if (EFI_ERROR(Status)) {\r
        Print(L"MMC Card: Error reinstalling BlockIo interface\n");\r
      }\r
    }\r
\r
    CurrentLink = CurrentLink->ForwardLink;\r
  }\r
}\r
\r
\r
EFI_DRIVER_BINDING_PROTOCOL gMmcDriverBinding = {\r
  MmcDriverBindingSupported,\r
  MmcDriverBindingStart,\r
  MmcDriverBindingStop,\r
  0xa,\r
  NULL,\r
  NULL\r
};\r
\r
/**\r
  \r
**/\r
EFI_STATUS\r
EFIAPI\r
MmcDxeInitialize (\r
  IN EFI_HANDLE         ImageHandle,\r
  IN EFI_SYSTEM_TABLE   *SystemTable\r
  )\r
{\r
  EFI_STATUS  Status;\r
\r
  //\r
  // Initializes MMC Host pool\r
  //\r
  InitializeMmcHostPool ();\r
\r
  //\r
  // Install driver model protocol(s).\r
  //\r
  Status = EfiLibInstallDriverBindingComponentName2 (\r
           ImageHandle,\r
           SystemTable,\r
           &gMmcDriverBinding,\r
           ImageHandle,\r
           &gMmcComponentName,\r
           &gMmcComponentName2\r
           );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Install driver diagnostics\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                &ImageHandle,\r
                &gEfiDriverDiagnostics2ProtocolGuid,&gMmcDriverDiagnostics2,\r
                NULL\r
                );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  // Use a timer to detect if a card has been plugged in or removed\r
  Status = gBS->CreateEvent (\r
                EVT_NOTIFY_SIGNAL | EVT_TIMER,\r
                TPL_CALLBACK,\r
                CheckCardsCallback,\r
                NULL,\r
                &gCheckCardsEvent);\r
  ASSERT_EFI_ERROR (Status);  \r
              \r
  Status = gBS->SetTimer(\r
                gCheckCardsEvent,\r
                TimerPeriodic,\r
                (UINT64)(10*1000*200)); // 200 ms\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
Commit	Line	Data
1bfda055	1	/** @file\r
	2	Main file of the MMC Dxe driver. The driver entrypoint is defined into this file.\r
	3	\r
4ca3c688	4	Copyright (c) 2011-2013, ARM Limited. All rights reserved.\r
1bfda055	5	\r
	6	This program and the accompanying materials \r
	7	are licensed and made available under the terms and conditions of the BSD License \r
	8	which accompanies this distribution. The full text of the license may be found at \r
	9	http://opensource.org/licenses/bsd-license.php \r
	10	\r
	11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	13	\r
	14	**/\r
	15	\r
	16	#include <Protocol/DevicePath.h>\r
1bfda055	17	\r
	18	#include <Library/BaseLib.h>\r
	19	#include <Library/BaseMemoryLib.h>\r
	20	#include <Library/MemoryAllocationLib.h>\r
	21	#include <Library/UefiBootServicesTableLib.h>\r
	22	#include <Library/DevicePathLib.h>\r
1bfda055	23	\r
	24	#include "Mmc.h"\r
	25	\r
	26	EFI_BLOCK_IO_MEDIA mMmcMediaTemplate = {\r
	27	SIGNATURE_32('m','m','c','o'), // MediaId\r
	28	TRUE, // RemovableMedia\r
	29	FALSE, // MediaPresent\r
	30	FALSE, // LogicalPartition\r
	31	FALSE, // ReadOnly\r
	32	FALSE, // WriteCaching\r
	33	512, // BlockSize\r
	34	4, // IoAlign\r
	35	0, // Pad\r
	36	0 // LastBlock\r
	37	};\r
	38	\r
	39	//\r
	40	// This device structure is serviced as a header.\r
	41	// Its next field points to the first root bridge device node.\r
	42	//\r
	43	LIST_ENTRY mMmcHostPool;\r
	44	\r
3de99375	45	/**\r
	46	Event triggered by the timer to check if any cards have been removed\r
	47	or if new ones have been plugged in\r
	48	**/\r
	49	\r
	50	EFI_EVENT gCheckCardsEvent;\r
	51	\r
1bfda055	52	/**\r
	53	Initialize the MMC Host Pool to support multiple MMC devices\r
	54	**/\r
	55	VOID\r
	56	InitializeMmcHostPool (\r
	57	VOID\r
	58	)\r
	59	{\r
e8e95df4	60	InitializeListHead (&mMmcHostPool);\r
1bfda055	61	}\r
	62	\r
	63	/**\r
	64	Insert a new Mmc Host controller to the pool\r
	65	**/\r
	66	VOID\r
	67	InsertMmcHost (\r
	68	IN MMC_HOST_INSTANCE *MmcHostInstance\r
	69	)\r
	70	{\r
e8e95df4	71	InsertTailList (&mMmcHostPool, &(MmcHostInstance->Link));\r
1bfda055	72	}\r
	73	\r
	74	/*\r
	75	Remove a new Mmc Host controller to the pool\r
	76	*/\r
	77	VOID\r
	78	RemoveMmcHost (\r
	79	IN MMC_HOST_INSTANCE *MmcHostInstance\r
	80	)\r
	81	{\r
e8e95df4	82	RemoveEntryList (&(MmcHostInstance->Link));\r
1bfda055	83	}\r
1bfda055	84	\r
e8e95df4	85	MMC_HOST_INSTANCE* CreateMmcHostInstance (\r
1bfda055	86	IN EFI_MMC_HOST_PROTOCOL* MmcHost\r
	87	)\r
	88	{\r
e8e95df4	89	EFI_STATUS Status;\r
	90	MMC_HOST_INSTANCE* MmcHostInstance;\r
	91	EFI_DEVICE_PATH_PROTOCOL *NewDevicePathNode;\r
	92	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
1bfda055	93	\r
e8e95df4	94	MmcHostInstance = AllocateZeroPool (sizeof (MMC_HOST_INSTANCE));\r
	95	if (MmcHostInstance == NULL) {\r
	96	return NULL;\r
	97	}\r
1bfda055	98	\r
e8e95df4	99	MmcHostInstance->Signature = MMC_HOST_INSTANCE_SIGNATURE;\r
1bfda055	100	\r
e8e95df4	101	MmcHostInstance->State = MmcHwInitializationState;\r
1bfda055	102	\r
e8e95df4	103	MmcHostInstance->BlockIo.Media = AllocateCopyPool (sizeof(EFI_BLOCK_IO_MEDIA), &mMmcMediaTemplate);\r
	104	if (MmcHostInstance->BlockIo.Media == NULL) {\r
	105	goto FREE_INSTANCE;\r
	106	}\r
1bfda055	107	\r
e8e95df4	108	MmcHostInstance->BlockIo.Revision = EFI_BLOCK_IO_INTERFACE_REVISION;\r
	109	MmcHostInstance->BlockIo.Reset = MmcReset;\r
	110	MmcHostInstance->BlockIo.ReadBlocks = MmcReadBlocks;\r
	111	MmcHostInstance->BlockIo.WriteBlocks = MmcWriteBlocks;\r
	112	MmcHostInstance->BlockIo.FlushBlocks = MmcFlushBlocks;\r
1bfda055	113	\r
e8e95df4	114	MmcHostInstance->MmcHost = MmcHost;\r
	115	\r
	116	// Create DevicePath for the new MMC Host\r
16d88c2d	117	Status = MmcHost->BuildDevicePath (MmcHost, &NewDevicePathNode);\r
e8e95df4	118	if (EFI_ERROR (Status)) {\r
	119	goto FREE_MEDIA;\r
	120	}\r
1bfda055	121	\r
e8e95df4	122	DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) AllocatePool (END_DEVICE_PATH_LENGTH);\r
	123	if (DevicePath == NULL) {\r
	124	goto FREE_MEDIA;\r
	125	}\r
	126	\r
	127	SetDevicePathEndNode (DevicePath);\r
	128	MmcHostInstance->DevicePath = AppendDevicePathNode (DevicePath, NewDevicePathNode);\r
	129	\r
	130	// Publish BlockIO protocol interface\r
	131	Status = gBS->InstallMultipleProtocolInterfaces (\r
	132	&MmcHostInstance->MmcHandle,\r
3de99375	133	&gEfiBlockIoProtocolGuid,&MmcHostInstance->BlockIo,\r
e8e95df4	134	&gEfiDevicePathProtocolGuid,MmcHostInstance->DevicePath,\r
	135	NULL\r
	136	);\r
	137	if (EFI_ERROR(Status)) {\r
	138	goto FREE_DEVICE_PATH;\r
	139	}\r
	140	\r
	141	return MmcHostInstance;\r
1bfda055	142	\r
1bfda055	143	FREE_DEVICE_PATH:\r
e8e95df4	144	FreePool(DevicePath);\r
1bfda055	145	\r
1bfda055	146	FREE_MEDIA:\r
e8e95df4	147	FreePool(MmcHostInstance->BlockIo.Media);\r
1bfda055	148	\r
1bfda055	149	FREE_INSTANCE:\r
e8e95df4	150	FreePool(MmcHostInstance);\r
1bfda055	151	\r
e8e95df4	152	return NULL;\r
1bfda055	153	}\r
1bfda055	154	\r
e8e95df4	155	EFI_STATUS DestroyMmcHostInstance (\r
1bfda055	156	IN MMC_HOST_INSTANCE* MmcHostInstance\r
	157	)\r
	158	{\r
e8e95df4	159	EFI_STATUS Status;\r
1bfda055	160	\r
e8e95df4	161	// Uninstall Protocol Interfaces\r
e8e95df4	162	Status = gBS->UninstallMultipleProtocolInterfaces (\r
6102636a	163	MmcHostInstance->MmcHandle,\r
e8e95df4	164	&gEfiBlockIoProtocolGuid,&(MmcHostInstance->BlockIo),\r
6102636a	165	&gEfiDevicePathProtocolGuid,MmcHostInstance->DevicePath,\r
e8e95df4	166	NULL\r
	167	);\r
	168	ASSERT_EFI_ERROR (Status);\r
1bfda055	169	\r
e8e95df4	170	// Free Memory allocated for the instance\r
	171	if (MmcHostInstance->BlockIo.Media) {\r
	172	FreePool(MmcHostInstance->BlockIo.Media);\r
	173	}\r
	174	FreePool (MmcHostInstance);\r
	175	\r
	176	return Status;\r
1bfda055	177	}\r
	178	\r
	179	/**\r
	180	This function checks if the controller implement the Mmc Host and the Device Path Protocols\r
	181	**/\r
	182	EFI_STATUS\r
	183	EFIAPI\r
	184	MmcDriverBindingSupported (\r
	185	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	186	IN EFI_HANDLE Controller,\r
	187	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	188	)\r
	189	{\r
e8e95df4	190	EFI_STATUS Status;\r
	191	//EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
	192	EFI_MMC_HOST_PROTOCOL *MmcHost;\r
	193	EFI_DEV_PATH_PTR Node;\r
	194	\r
	195	//\r
	196	// Check RemainingDevicePath validation\r
	197	//\r
	198	if (RemainingDevicePath != NULL) {\r
1bfda055	199	//\r
e8e95df4	200	// Check if RemainingDevicePath is the End of Device Path Node,\r
e8e95df4	201	// if yes, go on checking other conditions\r
1bfda055	202	//\r
e8e95df4	203	if (!IsDevicePathEnd (RemainingDevicePath)) {\r
	204	//\r
	205	// If RemainingDevicePath isn't the End of Device Path Node,\r
	206	// check its validation\r
	207	//\r
	208	Node.DevPath = RemainingDevicePath;\r
	209	if (Node.DevPath->Type != HARDWARE_DEVICE_PATH \|\|\r
	210	Node.DevPath->SubType != HW_VENDOR_DP \|\|\r
	211	DevicePathNodeLength(Node.DevPath) != sizeof(VENDOR_DEVICE_PATH)) {\r
	212	return EFI_UNSUPPORTED;\r
	213	}\r
1bfda055	214	}\r
e8e95df4	215	}\r
	216	\r
	217	//\r
	218	// Check if Mmc Host protocol is installed by platform\r
	219	//\r
	220	Status = gBS->OpenProtocol (\r
	221	Controller,\r
	222	&gEfiMmcHostProtocolGuid,\r
	223	(VOID **) &MmcHost,\r
	224	This->DriverBindingHandle,\r
	225	Controller,\r
	226	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	227	);\r
	228	if (Status == EFI_ALREADY_STARTED) {\r
1bfda055	229	return EFI_SUCCESS;\r
e8e95df4	230	}\r
	231	if (EFI_ERROR (Status)) {\r
	232	return Status;\r
	233	}\r
	234	\r
	235	//\r
	236	// Close the Mmc Host used to perform the supported test\r
	237	//\r
	238	gBS->CloseProtocol (\r
	239	Controller,\r
	240	&gEfiMmcHostProtocolGuid,\r
	241	This->DriverBindingHandle,\r
	242	Controller\r
	243	);\r
	244	\r
	245	return EFI_SUCCESS;\r
1bfda055	246	}\r
	247	\r
	248	/**\r
	249	\r
	250	**/\r
	251	EFI_STATUS\r
	252	EFIAPI\r
	253	MmcDriverBindingStart (\r
	254	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	255	IN EFI_HANDLE Controller,\r
	256	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	257	)\r
	258	{\r
e8e95df4	259	EFI_STATUS Status;\r
	260	MMC_HOST_INSTANCE *MmcHostInstance;\r
	261	EFI_MMC_HOST_PROTOCOL *MmcHost;\r
	262	\r
	263	//\r
	264	// Check RemainingDevicePath validation\r
	265	//\r
	266	if (RemainingDevicePath != NULL) {\r
1bfda055	267	//\r
e8e95df4	268	// Check if RemainingDevicePath is the End of Device Path Node,\r
e8e95df4	269	// if yes, return EFI_SUCCESS\r
1bfda055	270	//\r
e8e95df4	271	if (IsDevicePathEnd (RemainingDevicePath)) {\r
e8e95df4	272	return EFI_SUCCESS;\r
1bfda055	273	}\r
e8e95df4	274	}\r
	275	\r
	276	//\r
	277	// Get the Mmc Host protocol\r
	278	//\r
	279	Status = gBS->OpenProtocol (\r
	280	Controller,\r
	281	&gEfiMmcHostProtocolGuid,\r
	282	(VOID **) &MmcHost,\r
	283	This->DriverBindingHandle,\r
	284	Controller,\r
	285	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	286	);\r
	287	if (EFI_ERROR (Status)) {\r
	288	if (Status == EFI_ALREADY_STARTED) {\r
	289	return EFI_SUCCESS;\r
1bfda055	290	}\r
e8e95df4	291	return Status;\r
e8e95df4	292	}\r
1bfda055	293	\r
e8e95df4	294	MmcHostInstance = CreateMmcHostInstance(MmcHost);\r
	295	if (MmcHostInstance != NULL) {\r
	296	// Add the handle to the pool\r
	297	InsertMmcHost (MmcHostInstance);\r
3de99375	298	\r
3de99375	299	MmcHostInstance->Initialized = FALSE;\r
40842a5e	300	\r
	301	// Detect card presence now\r
	302	CheckCardsCallback (NULL, NULL);\r
e8e95df4	303	}\r
1bfda055	304	\r
e8e95df4	305	return EFI_SUCCESS;\r
1bfda055	306	}\r
	307	\r
	308	/**\r
	309	\r
	310	**/\r
	311	EFI_STATUS\r
	312	EFIAPI\r
	313	MmcDriverBindingStop (\r
	314	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	315	IN EFI_HANDLE Controller,\r
	316	IN UINTN NumberOfChildren,\r
	317	IN EFI_HANDLE *ChildHandleBuffer\r
	318	)\r
	319	{\r
e8e95df4	320	EFI_STATUS Status = EFI_SUCCESS;\r
	321	LIST_ENTRY *CurrentLink;\r
	322	MMC_HOST_INSTANCE *MmcHostInstance;\r
1bfda055	323	\r
e8e95df4	324	MMC_TRACE("MmcDriverBindingStop()");\r
	325	\r
	326	// For each MMC instance\r
	327	CurrentLink = mMmcHostPool.ForwardLink;\r
	328	while (CurrentLink != NULL && CurrentLink != &mMmcHostPool && (Status == EFI_SUCCESS)) {\r
	329	MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);\r
	330	ASSERT(MmcHostInstance != NULL);\r
	331	\r
	332	// Close gEfiMmcHostProtocolGuid\r
	333	Status = gBS->CloseProtocol (\r
	334	Controller,\r
	335	&gEfiMmcHostProtocolGuid,(VOID **) &MmcHostInstance->MmcHost,\r
	336	This->DriverBindingHandle\r
	337	);\r
	338	\r
	339	// Remove MMC Host Instance from the pool\r
	340	RemoveMmcHost (MmcHostInstance);\r
	341	\r
	342	// Destroy MmcHostInstance\r
	343	DestroyMmcHostInstance (MmcHostInstance);\r
	344	}\r
	345	\r
	346	return Status;\r
1bfda055	347	}\r
1bfda055	348	\r
3de99375	349	VOID\r
	350	EFIAPI\r
	351	CheckCardsCallback (\r
	352	IN EFI_EVENT Event,\r
	353	IN VOID *Context\r
	354	)\r
	355	{\r
	356	LIST_ENTRY *CurrentLink;\r
	357	MMC_HOST_INSTANCE *MmcHostInstance;\r
	358	EFI_STATUS Status;\r
	359	\r
	360	CurrentLink = mMmcHostPool.ForwardLink;\r
	361	while (CurrentLink != NULL && CurrentLink != &mMmcHostPool) {\r
	362	MmcHostInstance = MMC_HOST_INSTANCE_FROM_LINK(CurrentLink);\r
	363	ASSERT(MmcHostInstance != NULL);\r
	364	\r
16d88c2d	365	if (MmcHostInstance->MmcHost->IsCardPresent (MmcHostInstance->MmcHost) == !MmcHostInstance->Initialized) {\r
3de99375	366	MmcHostInstance->State = MmcHwInitializationState;\r
	367	MmcHostInstance->BlockIo.Media->MediaPresent = !MmcHostInstance->Initialized;\r
	368	MmcHostInstance->Initialized = !MmcHostInstance->Initialized;\r
	369	\r
16d88c2d	370	if (MmcHostInstance->BlockIo.Media->MediaPresent) {\r
16d88c2d	371	InitializeMmcDevice (MmcHostInstance);\r
40842a5e	372	}\r
40842a5e	373	\r
3de99375	374	Status = gBS->ReinstallProtocolInterface (\r
	375	(MmcHostInstance->MmcHandle),\r
	376	&gEfiBlockIoProtocolGuid,\r
	377	&(MmcHostInstance->BlockIo),\r
	378	&(MmcHostInstance->BlockIo)\r
	379	);\r
	380	\r
	381	if (EFI_ERROR(Status)) {\r
	382	Print(L"MMC Card: Error reinstalling BlockIo interface\n");\r
	383	}\r
	384	}\r
	385	\r
	386	CurrentLink = CurrentLink->ForwardLink;\r
	387	}\r
	388	}\r
	389	\r
40842a5e	390	\r
1bfda055	391	EFI_DRIVER_BINDING_PROTOCOL gMmcDriverBinding = {\r
	392	MmcDriverBindingSupported,\r
	393	MmcDriverBindingStart,\r
	394	MmcDriverBindingStop,\r
	395	0xa,\r
	396	NULL,\r
	397	NULL\r
	398	};\r
	399	\r
	400	/**\r
	401	\r
	402	**/\r
	403	EFI_STATUS\r
	404	EFIAPI\r
	405	MmcDxeInitialize (\r
	406	IN EFI_HANDLE ImageHandle,\r
	407	IN EFI_SYSTEM_TABLE *SystemTable\r
	408	)\r
	409	{\r
e8e95df4	410	EFI_STATUS Status;\r
	411	\r
	412	//\r
	413	// Initializes MMC Host pool\r
	414	//\r
	415	InitializeMmcHostPool ();\r
	416	\r
	417	//\r
	418	// Install driver model protocol(s).\r
	419	//\r
	420	Status = EfiLibInstallDriverBindingComponentName2 (\r
	421	ImageHandle,\r
	422	SystemTable,\r
	423	&gMmcDriverBinding,\r
	424	ImageHandle,\r
	425	&gMmcComponentName,\r
	426	&gMmcComponentName2\r
	427	);\r
	428	ASSERT_EFI_ERROR (Status);\r
	429	\r
	430	// Install driver diagnostics\r
	431	Status = gBS->InstallMultipleProtocolInterfaces (\r
	432	&ImageHandle,\r
	433	&gEfiDriverDiagnostics2ProtocolGuid,&gMmcDriverDiagnostics2,\r
	434	NULL\r
	435	);\r
	436	ASSERT_EFI_ERROR (Status);\r
	437	\r
3de99375	438	// Use a timer to detect if a card has been plugged in or removed\r
	439	Status = gBS->CreateEvent (\r
	440	EVT_NOTIFY_SIGNAL \| EVT_TIMER,\r
	441	TPL_CALLBACK,\r
	442	CheckCardsCallback,\r
	443	NULL,\r
	444	&gCheckCardsEvent);\r
	445	ASSERT_EFI_ERROR (Status); \r
	446	\r
	447	Status = gBS->SetTimer(\r
	448	gCheckCardsEvent,\r
	449	TimerPeriodic,\r
	450	(UINT64)(101000200)); // 200 ms\r
	451	ASSERT_EFI_ERROR (Status);\r
	452	\r
e8e95df4	453	return Status;\r
1bfda055	454	}\r