[mirror_edk2.git] / IntelFrameworkModulePkg / Library / PciIncompatibleDeviceSupportLib / PciIncompatibleDeviceSupportLib.c

/** @file\r
  The implementation of PCI incompatible device support libary.\r
\r
Copyright (c) 2007 Intel Corporation. All rights reserved. <BR>\r
This software and associated documentation (if any) is furnished\r
under a license and may only be used or copied in accordance\r
with the terms of the license. Except as permitted by such\r
license, no part of this software or documentation may be\r
reproduced, stored in a retrieval system, or transmitted in any\r
form or by any means without the express written consent of\r
Intel Corporation.\r
\r
**/\r
\r
//\r
// Include common header file for this module.\r
//\r
#include "CommonHeader.h"\r
\r
#include "IncompatiblePciDeviceList.h"\r
\r
/**\r
  Check whether two PCI devices matched\r
\r
  @param  PciDeviceInfo       A pointer to EFI_PCI_DEVICE_INFO.\r
  @param  Header              A pointer to EFI_PCI_DEVICE_INFO.\r
\r
  @retval returns EFI_SUCCESS if two PCI device matched.\r
**/\r
STATIC\r
EFI_STATUS\r
DeviceCheck (\r
  IN  EFI_PCI_DEVICE_INFO      *PciDeviceInfo,\r
  IN  EFI_PCI_DEVICE_INFO      *Header\r
  )\r
{\r
  //\r
  // See if the Header matches the parameters passed in\r
  //\r
  if (Header->VendorID != DEVICE_ID_NOCARE) {\r
    if (PciDeviceInfo->VendorID != Header->VendorID) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  if (Header->DeviceID != DEVICE_ID_NOCARE) {\r
    if (PciDeviceInfo->DeviceID != Header->DeviceID) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  if (Header->RevisionID != DEVICE_ID_NOCARE) {\r
    if (PciDeviceInfo->RevisionID != Header->RevisionID) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  if (Header->SubsystemVendorID != DEVICE_ID_NOCARE) {\r
    if (PciDeviceInfo->SubsystemVendorID != Header->SubsystemVendorID) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  if (Header->SubsystemID != DEVICE_ID_NOCARE) {\r
    if (PciDeviceInfo->SubsystemID != Header->SubsystemID) {\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
\r
/**\r
  Check the incompatible device list for ACPI resource update and return\r
  the configuration\r
\r
  This function searches the incompatible device list according to request\r
  information. If the PCI device belongs to the devices list, corresponding\r
  configuration informtion will be returned, in the meantime return EFI_SUCCESS.\r
\r
  @param  PciDeviceInfo       A pointer to PCI device information.\r
  @param  Configuration       Returned information.\r
\r
  @retval returns EFI_SUCCESS if check incompatible device ok.\r
          Otherwise return EFI_UNSUPPORTED.\r
**/\r
RETURN_STATUS\r
EFIAPI\r
PciResourceUpdateCheck (\r
  IN  EFI_PCI_DEVICE_INFO           *PciDeviceInfo,\r
  OUT VOID                          *Configuration\r
  )\r
{\r
  UINT64                            Tag;\r
  UINT64                            *ListPtr;\r
  UINT64                            *TempListPtr;\r
  EFI_PCI_DEVICE_INFO               *Header;\r
  EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *AcpiPtr;\r
  EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *OldAcpiPtr;\r
  EFI_PCI_RESOUCE_DESCRIPTOR        *Dsc;\r
  EFI_ACPI_END_TAG_DESCRIPTOR       *PtrEnd;\r
  UINTN                             Index;\r
\r
  ASSERT (PciDeviceInfo != NULL);\r
\r
  //\r
  // Initialize the return value to NULL\r
  //\r
  * (VOID **) Configuration = NULL;\r
\r
  ListPtr                   = IncompatiblePciDeviceListForResource;\r
  while (*ListPtr != LIST_END_TAG) {\r
\r
    Tag = *ListPtr;\r
\r
    switch (Tag) {\r
    case DEVICE_INF_TAG:\r
      Header  = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
      ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
\r
      if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
        continue;\r
      }\r
\r
      //\r
      // Matched an item, so construct the ACPI descriptor for the resource.\r
      //\r
      //\r
      // Count the resource items so that to allocate space\r
      //\r
      for (Index = 0, TempListPtr = ListPtr; *TempListPtr == DEVICE_RES_TAG; Index++) {\r
        TempListPtr = TempListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
      }\r
      //\r
      // If there is at least one type of resource request,\r
      // allocate a acpi resource node\r
      //\r
      if (Index == 0) {\r
        return EFI_ABORTED;\r
      }\r
\r
      AcpiPtr = AllocateZeroPool (\r
                  sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) * Index + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR)\r
                );\r
\r
      OldAcpiPtr = AcpiPtr;\r
\r
      //\r
      //   Fill the EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR structure\r
      //   according to the EFI_PCI_RESOUCE_DESCRIPTOR structure\r
      //\r
      for (; *ListPtr == DEVICE_RES_TAG;) {\r
\r
        Dsc = (EFI_PCI_RESOUCE_DESCRIPTOR *) (ListPtr + 1);\r
\r
        AcpiPtr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r
        AcpiPtr->Len = sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);\r
        AcpiPtr->ResType = (UINT8) Dsc->ResType;\r
        AcpiPtr->GenFlag = (UINT8) Dsc->GenFlag;\r
        AcpiPtr->SpecificFlag = (UINT8) Dsc->SpecificFlag;\r
        AcpiPtr->AddrSpaceGranularity = Dsc->AddrSpaceGranularity;;\r
        AcpiPtr->AddrRangeMin = Dsc->AddrRangeMin;\r
        AcpiPtr->AddrRangeMax = Dsc->AddrRangeMax;\r
        AcpiPtr->AddrTranslationOffset = Dsc->AddrTranslationOffset;\r
        AcpiPtr->AddrLen = Dsc->AddrLen;\r
\r
        ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
        AcpiPtr++;\r
      }\r
      //\r
      // put the checksum\r
      //\r
      PtrEnd                    = (EFI_ACPI_END_TAG_DESCRIPTOR *) (AcpiPtr);\r
      PtrEnd->Desc              = ACPI_END_TAG_DESCRIPTOR;\r
      PtrEnd->Checksum          = 0;\r
\r
      *(VOID **) Configuration  = OldAcpiPtr;\r
\r
      return EFI_SUCCESS;\r
\r
    case DEVICE_RES_TAG:\r
      //\r
      // Adjust the pointer to the next PCI resource descriptor item\r
      //\r
      ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
      break;\r
\r
    default:\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  return EFI_UNSUPPORTED;\r
\r
}\r
\r
/**\r
  Check the incompatible device list and return configuraton register mask values.\r
\r
  This function searches the incompatible device list according to request\r
  information. If the PCI device belongs to the devices list, corresponding\r
  configuration informtion will be returned, in the meantime return EFI_SUCCESS.\r
\r
  @param  PciDeviceInfo       A pointer to EFI_PCI_DEVICE_INFO.\r
  @param  AccessType          Access Type, READ or WRITE.\r
  @param  Offset              The address within the PCI configuration space.\r
  @param  Configuration       Returned information.\r
\r
  @retval returns EFI_SUCCESS if check incompatible device ok.\r
          Otherwise return EFI_UNSUPPORTED.\r
**/\r
RETURN_STATUS\r
EFIAPI\r
PciRegisterUpdateCheck (\r
  IN  EFI_PCI_DEVICE_INFO           *PciDeviceInfo,\r
  IN  UINT64                        AccessType,\r
  IN  UINT64                        Offset,\r
  OUT VOID                          *Configuration\r
  )\r
{\r
  EFI_PCI_DEVICE_INFO               *Header;\r
  UINT64                            Tag;\r
  UINT64                            *ListPtr;\r
  EFI_PCI_REGISTER_VALUE_DATA       *RegisterPtr;\r
  EFI_PCI_REGISTER_VALUE_DATA       *Dsc;\r
\r
  ASSERT (PciDeviceInfo != NULL);\r
\r
  ListPtr                   = IncompatiblePciDeviceListForRegister;\r
\r
  //\r
  // Initialize the return value to NULL\r
  //\r
  * (VOID **) Configuration = NULL;\r
\r
  while (*ListPtr != LIST_END_TAG) {\r
\r
    Tag = *ListPtr;\r
\r
    switch (Tag) {\r
    case DEVICE_INF_TAG:\r
      Header  = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
      ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
\r
      //\r
      // Check whether the PCI device matches the device in the incompatible devices list?\r
      // If not, ship next\r
      //\r
      if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
        continue;\r
      }\r
\r
      //\r
      // Matched an item, check whether access matches?\r
      //\r
      for (; *ListPtr == DEVICE_RES_TAG;) {\r
        ListPtr ++;\r
        if (((EFI_PCI_REGISTER_VALUE_DESCRIPTOR *)ListPtr)->Offset == (Offset & 0xfc)) {\r
          if (((EFI_PCI_REGISTER_VALUE_DESCRIPTOR *)ListPtr)->AccessType == AccessType) {\r
\r
            Dsc = (EFI_PCI_REGISTER_VALUE_DATA *) (ListPtr + 2);\r
            RegisterPtr = AllocateZeroPool (sizeof (EFI_PCI_REGISTER_VALUE_DATA));\r
\r
            RegisterPtr->AndValue      = Dsc->AndValue;\r
            RegisterPtr->OrValue       = Dsc->OrValue;\r
\r
            *(VOID **) Configuration   = RegisterPtr;\r
\r
            return EFI_SUCCESS;\r
          }\r
        }\r
        ListPtr += sizeof (EFI_PCI_REGISTER_VALUE_DESCRIPTOR) / (sizeof (UINT64));\r
      }\r
      return EFI_UNSUPPORTED;\r
\r
    case DEVICE_RES_TAG:\r
      //\r
      // Adjust the pointer to the next item\r
      //\r
      ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_REGISTER_VALUE_DESCRIPTOR)) / sizeof (UINT64));\r
      break;\r
\r
    default:\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  return EFI_UNSUPPORTED;\r
}\r
\r
/**\r
  Check the incompatible device list for access width incompatibility and\r
  return the configuration\r
\r
  This function searches the incompatible device list for access width\r
  incompatibility according to request information. If the PCI device\r
  belongs to the devices list, corresponding configuration informtion\r
  will be returned, in the meantime return EFI_SUCCESS.\r
\r
  @param  PciDeviceInfo       A pointer to PCI device information.\r
  @param  AccessType          Access type, READ or WRITE.\r
  @param  Offset              The address within the PCI configuration space.\r
  @param  AccessWidth         Access width needs to check incompatibility.\r
  @param  Configuration       Returned information.\r
\r
  @retval returns EFI_SUCCESS if check incompatible device ok.\r
          Otherwise return EFI_UNSUPPORTED.\r
**/\r
RETURN_STATUS\r
EFIAPI\r
PciRegisterAccessCheck (\r
  IN  EFI_PCI_DEVICE_INFO           *PciDeviceInfo,\r
  IN  UINT64                        AccessType,\r
  IN  UINT64                        Offset,\r
  IN  UINT64                        AccessWidth,\r
  OUT VOID                          *Configuration\r
  )\r
{\r
  EFI_PCI_DEVICE_INFO                *Header;\r
  UINT64                             Tag;\r
  UINT64                             *ListPtr;\r
  EFI_PCI_REGISTER_ACCESS_DATA       *RegisterPtr;\r
  EFI_PCI_REGISTER_ACCESS_DATA       *Dsc;\r
\r
  ASSERT (PciDeviceInfo != NULL);\r
\r
  ListPtr                   = DeviceListForAccessWidth;\r
\r
  //\r
  // Initialize the return value to NULL\r
  //\r
  * (VOID **) Configuration = NULL;\r
\r
  while (*ListPtr != LIST_END_TAG) {\r
\r
    Tag = *ListPtr;\r
\r
    switch (Tag) {\r
    case DEVICE_INF_TAG:\r
      Header  = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
      ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
\r
      //\r
      // Check whether the PCI device matches the device in the incompatible devices list?\r
      // If not, ship next\r
      //\r
      if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
        continue;\r
      }\r
\r
      //\r
      // Matched an item, check whether access matches?\r
      //\r
      for (; *ListPtr == DEVICE_RES_TAG;) {\r
        ListPtr ++;\r
        if (((EFI_PCI_REGISTER_ACCESS_DESCRIPTOR *) ListPtr)->AccessType == AccessType &&\r
            ((EFI_PCI_REGISTER_ACCESS_DESCRIPTOR *) ListPtr)->AccessWidth == AccessWidth ) {\r
\r
          Dsc = (EFI_PCI_REGISTER_ACCESS_DATA *) (ListPtr + 2);\r
\r
          if((Dsc->StartOffset <= Offset) && (Dsc->EndOffset > Offset)) {\r
\r
            RegisterPtr = AllocateZeroPool (sizeof (EFI_PCI_REGISTER_ACCESS_DATA));\r
\r
            RegisterPtr->StartOffset      = Dsc->StartOffset;\r
            RegisterPtr->EndOffset        = Dsc->EndOffset;\r
            RegisterPtr->Width            = Dsc->Width;\r
\r
            *(VOID **) Configuration  = RegisterPtr;\r
\r
            return EFI_SUCCESS;\r
          }\r
        }\r
        ListPtr += sizeof (EFI_PCI_REGISTER_ACCESS_DESCRIPTOR) / (sizeof (UINT64));\r
      }\r
      return EFI_UNSUPPORTED;\r
\r
    case DEVICE_RES_TAG:\r
      //\r
      // Adjust the pointer to the next item\r
      //\r
      ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_REGISTER_ACCESS_DESCRIPTOR)) / sizeof (UINT64));\r
      break;\r
\r
    default:\r
      return EFI_UNSUPPORTED;\r
    }\r
  }\r
\r
  return EFI_UNSUPPORTED;\r
}\r
\r
Commit	Line	Data
	1	/** @file\r
	2	The implementation of PCI incompatible device support libary.\r
	3	\r
	4	Copyright (c) 2007 Intel Corporation. All rights reserved. <BR>\r
	5	This software and associated documentation (if any) is furnished\r
	6	under a license and may only be used or copied in accordance\r
	7	with the terms of the license. Except as permitted by such\r
	8	license, no part of this software or documentation may be\r
	9	reproduced, stored in a retrieval system, or transmitted in any\r
	10	form or by any means without the express written consent of\r
	11	Intel Corporation.\r
	12	\r
	13	**/\r
	14	\r
	15	//\r
	16	// Include common header file for this module.\r
	17	//\r
	18	#include "CommonHeader.h"\r
	19	\r
	20	#include "IncompatiblePciDeviceList.h"\r
	21	\r
	22	/**\r
	23	Check whether two PCI devices matched\r
	24	\r
	25	@param PciDeviceInfo A pointer to EFI_PCI_DEVICE_INFO.\r
	26	@param Header A pointer to EFI_PCI_DEVICE_INFO.\r
	27	\r
	28	@retval returns EFI_SUCCESS if two PCI device matched.\r
	29	**/\r
	30	STATIC\r
	31	EFI_STATUS\r
	32	DeviceCheck (\r
	33	IN EFI_PCI_DEVICE_INFO *PciDeviceInfo,\r
	34	IN EFI_PCI_DEVICE_INFO *Header\r
	35	)\r
	36	{\r
	37	//\r
	38	// See if the Header matches the parameters passed in\r
	39	//\r
	40	if (Header->VendorID != DEVICE_ID_NOCARE) {\r
	41	if (PciDeviceInfo->VendorID != Header->VendorID) {\r
	42	return EFI_UNSUPPORTED;\r
	43	}\r
	44	}\r
	45	\r
	46	if (Header->DeviceID != DEVICE_ID_NOCARE) {\r
	47	if (PciDeviceInfo->DeviceID != Header->DeviceID) {\r
	48	return EFI_UNSUPPORTED;\r
	49	}\r
	50	}\r
	51	\r
	52	if (Header->RevisionID != DEVICE_ID_NOCARE) {\r
	53	if (PciDeviceInfo->RevisionID != Header->RevisionID) {\r
	54	return EFI_UNSUPPORTED;\r
	55	}\r
	56	}\r
	57	\r
	58	if (Header->SubsystemVendorID != DEVICE_ID_NOCARE) {\r
	59	if (PciDeviceInfo->SubsystemVendorID != Header->SubsystemVendorID) {\r
	60	return EFI_UNSUPPORTED;\r
	61	}\r
	62	}\r
	63	\r
	64	if (Header->SubsystemID != DEVICE_ID_NOCARE) {\r
	65	if (PciDeviceInfo->SubsystemID != Header->SubsystemID) {\r
	66	return EFI_UNSUPPORTED;\r
	67	}\r
	68	}\r
	69	\r
	70	return EFI_SUCCESS;\r
	71	}\r
	72	\r
	73	\r
	74	/**\r
	75	Check the incompatible device list for ACPI resource update and return\r
	76	the configuration\r
	77	\r
	78	This function searches the incompatible device list according to request\r
	79	information. If the PCI device belongs to the devices list, corresponding\r
	80	configuration informtion will be returned, in the meantime return EFI_SUCCESS.\r
	81	\r
	82	@param PciDeviceInfo A pointer to PCI device information.\r
	83	@param Configuration Returned information.\r
	84	\r
	85	@retval returns EFI_SUCCESS if check incompatible device ok.\r
	86	Otherwise return EFI_UNSUPPORTED.\r
	87	**/\r
	88	RETURN_STATUS\r
	89	EFIAPI\r
	90	PciResourceUpdateCheck (\r
	91	IN EFI_PCI_DEVICE_INFO *PciDeviceInfo,\r
	92	OUT VOID *Configuration\r
	93	)\r
	94	{\r
	95	UINT64 Tag;\r
	96	UINT64 *ListPtr;\r
	97	UINT64 *TempListPtr;\r
	98	EFI_PCI_DEVICE_INFO *Header;\r
	99	EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *AcpiPtr;\r
	100	EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *OldAcpiPtr;\r
	101	EFI_PCI_RESOUCE_DESCRIPTOR *Dsc;\r
	102	EFI_ACPI_END_TAG_DESCRIPTOR *PtrEnd;\r
	103	UINTN Index;\r
	104	\r
	105	ASSERT (PciDeviceInfo != NULL);\r
	106	\r
	107	//\r
	108	// Initialize the return value to NULL\r
	109	//\r
	110	* (VOID **) Configuration = NULL;\r
	111	\r
	112	ListPtr = IncompatiblePciDeviceListForResource;\r
	113	while (*ListPtr != LIST_END_TAG) {\r
	114	\r
	115	Tag = *ListPtr;\r
	116	\r
	117	switch (Tag) {\r
	118	case DEVICE_INF_TAG:\r
	119	Header = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
	120	ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
	121	\r
	122	if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
	123	continue;\r
	124	}\r
	125	\r
	126	//\r
	127	// Matched an item, so construct the ACPI descriptor for the resource.\r
	128	//\r
	129	//\r
	130	// Count the resource items so that to allocate space\r
	131	//\r
	132	for (Index = 0, TempListPtr = ListPtr; *TempListPtr == DEVICE_RES_TAG; Index++) {\r
	133	TempListPtr = TempListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
	134	}\r
	135	//\r
	136	// If there is at least one type of resource request,\r
	137	// allocate a acpi resource node\r
	138	//\r
	139	if (Index == 0) {\r
	140	return EFI_ABORTED;\r
	141	}\r
	142	\r
	143	AcpiPtr = AllocateZeroPool (\r
	144	sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) * Index + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR)\r
	145	);\r
	146	\r
	147	OldAcpiPtr = AcpiPtr;\r
	148	\r
	149	//\r
	150	// Fill the EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR structure\r
	151	// according to the EFI_PCI_RESOUCE_DESCRIPTOR structure\r
	152	//\r
	153	for (; *ListPtr == DEVICE_RES_TAG;) {\r
	154	\r
	155	Dsc = (EFI_PCI_RESOUCE_DESCRIPTOR *) (ListPtr + 1);\r
	156	\r
	157	AcpiPtr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r
	158	AcpiPtr->Len = sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);\r
	159	AcpiPtr->ResType = (UINT8) Dsc->ResType;\r
	160	AcpiPtr->GenFlag = (UINT8) Dsc->GenFlag;\r
	161	AcpiPtr->SpecificFlag = (UINT8) Dsc->SpecificFlag;\r
	162	AcpiPtr->AddrSpaceGranularity = Dsc->AddrSpaceGranularity;;\r
	163	AcpiPtr->AddrRangeMin = Dsc->AddrRangeMin;\r
	164	AcpiPtr->AddrRangeMax = Dsc->AddrRangeMax;\r
	165	AcpiPtr->AddrTranslationOffset = Dsc->AddrTranslationOffset;\r
	166	AcpiPtr->AddrLen = Dsc->AddrLen;\r
	167	\r
	168	ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
	169	AcpiPtr++;\r
	170	}\r
	171	//\r
	172	// put the checksum\r
	173	//\r
	174	PtrEnd = (EFI_ACPI_END_TAG_DESCRIPTOR *) (AcpiPtr);\r
	175	PtrEnd->Desc = ACPI_END_TAG_DESCRIPTOR;\r
	176	PtrEnd->Checksum = 0;\r
	177	\r
	178	(VOID *) Configuration = OldAcpiPtr;\r
	179	\r
	180	return EFI_SUCCESS;\r
	181	\r
	182	case DEVICE_RES_TAG:\r
	183	//\r
	184	// Adjust the pointer to the next PCI resource descriptor item\r
	185	//\r
	186	ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_RESOUCE_DESCRIPTOR)) / sizeof (UINT64));\r
	187	break;\r
	188	\r
	189	default:\r
	190	return EFI_UNSUPPORTED;\r
	191	}\r
	192	}\r
	193	\r
	194	return EFI_UNSUPPORTED;\r
	195	\r
	196	}\r
	197	\r
	198	/**\r
	199	Check the incompatible device list and return configuraton register mask values.\r
	200	\r
	201	This function searches the incompatible device list according to request\r
	202	information. If the PCI device belongs to the devices list, corresponding\r
	203	configuration informtion will be returned, in the meantime return EFI_SUCCESS.\r
	204	\r
	205	@param PciDeviceInfo A pointer to EFI_PCI_DEVICE_INFO.\r
	206	@param AccessType Access Type, READ or WRITE.\r
	207	@param Offset The address within the PCI configuration space.\r
	208	@param Configuration Returned information.\r
	209	\r
	210	@retval returns EFI_SUCCESS if check incompatible device ok.\r
	211	Otherwise return EFI_UNSUPPORTED.\r
	212	**/\r
	213	RETURN_STATUS\r
	214	EFIAPI\r
	215	PciRegisterUpdateCheck (\r
	216	IN EFI_PCI_DEVICE_INFO *PciDeviceInfo,\r
	217	IN UINT64 AccessType,\r
	218	IN UINT64 Offset,\r
	219	OUT VOID *Configuration\r
	220	)\r
	221	{\r
	222	EFI_PCI_DEVICE_INFO *Header;\r
	223	UINT64 Tag;\r
	224	UINT64 *ListPtr;\r
	225	EFI_PCI_REGISTER_VALUE_DATA *RegisterPtr;\r
	226	EFI_PCI_REGISTER_VALUE_DATA *Dsc;\r
	227	\r
	228	ASSERT (PciDeviceInfo != NULL);\r
	229	\r
	230	ListPtr = IncompatiblePciDeviceListForRegister;\r
	231	\r
	232	//\r
	233	// Initialize the return value to NULL\r
	234	//\r
	235	* (VOID **) Configuration = NULL;\r
	236	\r
	237	while (*ListPtr != LIST_END_TAG) {\r
	238	\r
	239	Tag = *ListPtr;\r
	240	\r
	241	switch (Tag) {\r
	242	case DEVICE_INF_TAG:\r
	243	Header = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
	244	ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
	245	\r
	246	//\r
	247	// Check whether the PCI device matches the device in the incompatible devices list?\r
	248	// If not, ship next\r
	249	//\r
	250	if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
	251	continue;\r
	252	}\r
	253	\r
	254	//\r
	255	// Matched an item, check whether access matches?\r
	256	//\r
	257	for (; *ListPtr == DEVICE_RES_TAG;) {\r
	258	ListPtr ++;\r
	259	if (((EFI_PCI_REGISTER_VALUE_DESCRIPTOR *)ListPtr)->Offset == (Offset & 0xfc)) {\r
	260	if (((EFI_PCI_REGISTER_VALUE_DESCRIPTOR *)ListPtr)->AccessType == AccessType) {\r
	261	\r
	262	Dsc = (EFI_PCI_REGISTER_VALUE_DATA *) (ListPtr + 2);\r
	263	RegisterPtr = AllocateZeroPool (sizeof (EFI_PCI_REGISTER_VALUE_DATA));\r
	264	\r
	265	RegisterPtr->AndValue = Dsc->AndValue;\r
	266	RegisterPtr->OrValue = Dsc->OrValue;\r
	267	\r
	268	(VOID *) Configuration = RegisterPtr;\r
	269	\r
	270	return EFI_SUCCESS;\r
	271	}\r
	272	}\r
	273	ListPtr += sizeof (EFI_PCI_REGISTER_VALUE_DESCRIPTOR) / (sizeof (UINT64));\r
	274	}\r
	275	return EFI_UNSUPPORTED;\r
	276	\r
	277	case DEVICE_RES_TAG:\r
	278	//\r
	279	// Adjust the pointer to the next item\r
	280	//\r
	281	ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_REGISTER_VALUE_DESCRIPTOR)) / sizeof (UINT64));\r
	282	break;\r
	283	\r
	284	default:\r
	285	return EFI_UNSUPPORTED;\r
	286	}\r
	287	}\r
	288	\r
	289	return EFI_UNSUPPORTED;\r
	290	}\r
	291	\r
	292	/**\r
	293	Check the incompatible device list for access width incompatibility and\r
	294	return the configuration\r
	295	\r
	296	This function searches the incompatible device list for access width\r
	297	incompatibility according to request information. If the PCI device\r
	298	belongs to the devices list, corresponding configuration informtion\r
	299	will be returned, in the meantime return EFI_SUCCESS.\r
	300	\r
	301	@param PciDeviceInfo A pointer to PCI device information.\r
	302	@param AccessType Access type, READ or WRITE.\r
	303	@param Offset The address within the PCI configuration space.\r
	304	@param AccessWidth Access width needs to check incompatibility.\r
	305	@param Configuration Returned information.\r
	306	\r
	307	@retval returns EFI_SUCCESS if check incompatible device ok.\r
	308	Otherwise return EFI_UNSUPPORTED.\r
	309	**/\r
	310	RETURN_STATUS\r
	311	EFIAPI\r
	312	PciRegisterAccessCheck (\r
	313	IN EFI_PCI_DEVICE_INFO *PciDeviceInfo,\r
	314	IN UINT64 AccessType,\r
	315	IN UINT64 Offset,\r
	316	IN UINT64 AccessWidth,\r
	317	OUT VOID *Configuration\r
	318	)\r
	319	{\r
	320	EFI_PCI_DEVICE_INFO *Header;\r
	321	UINT64 Tag;\r
	322	UINT64 *ListPtr;\r
	323	EFI_PCI_REGISTER_ACCESS_DATA *RegisterPtr;\r
	324	EFI_PCI_REGISTER_ACCESS_DATA *Dsc;\r
	325	\r
	326	ASSERT (PciDeviceInfo != NULL);\r
	327	\r
	328	ListPtr = DeviceListForAccessWidth;\r
	329	\r
	330	//\r
	331	// Initialize the return value to NULL\r
	332	//\r
	333	* (VOID **) Configuration = NULL;\r
	334	\r
	335	while (*ListPtr != LIST_END_TAG) {\r
	336	\r
	337	Tag = *ListPtr;\r
	338	\r
	339	switch (Tag) {\r
	340	case DEVICE_INF_TAG:\r
	341	Header = (EFI_PCI_DEVICE_INFO *) (ListPtr + 1);\r
	342	ListPtr = ListPtr + 1 + sizeof (EFI_PCI_DEVICE_INFO) / sizeof (UINT64);\r
	343	\r
	344	//\r
	345	// Check whether the PCI device matches the device in the incompatible devices list?\r
	346	// If not, ship next\r
	347	//\r
	348	if (DeviceCheck (PciDeviceInfo, Header) != EFI_SUCCESS) {\r
	349	continue;\r
	350	}\r
	351	\r
	352	//\r
	353	// Matched an item, check whether access matches?\r
	354	//\r
	355	for (; *ListPtr == DEVICE_RES_TAG;) {\r
	356	ListPtr ++;\r
	357	if (((EFI_PCI_REGISTER_ACCESS_DESCRIPTOR *) ListPtr)->AccessType == AccessType &&\r
	358	((EFI_PCI_REGISTER_ACCESS_DESCRIPTOR *) ListPtr)->AccessWidth == AccessWidth ) {\r
	359	\r
	360	Dsc = (EFI_PCI_REGISTER_ACCESS_DATA *) (ListPtr + 2);\r
	361	\r
	362	if((Dsc->StartOffset <= Offset) && (Dsc->EndOffset > Offset)) {\r
	363	\r
	364	RegisterPtr = AllocateZeroPool (sizeof (EFI_PCI_REGISTER_ACCESS_DATA));\r
	365	\r
	366	RegisterPtr->StartOffset = Dsc->StartOffset;\r
	367	RegisterPtr->EndOffset = Dsc->EndOffset;\r
	368	RegisterPtr->Width = Dsc->Width;\r
	369	\r
	370	(VOID *) Configuration = RegisterPtr;\r
	371	\r
	372	return EFI_SUCCESS;\r
	373	}\r
	374	}\r
	375	ListPtr += sizeof (EFI_PCI_REGISTER_ACCESS_DESCRIPTOR) / (sizeof (UINT64));\r
	376	}\r
	377	return EFI_UNSUPPORTED;\r
	378	\r
	379	case DEVICE_RES_TAG:\r
	380	//\r
	381	// Adjust the pointer to the next item\r
	382	//\r
	383	ListPtr = ListPtr + 1 + ((sizeof (EFI_PCI_REGISTER_ACCESS_DESCRIPTOR)) / sizeof (UINT64));\r
	384	break;\r
	385	\r
	386	default:\r
	387	return EFI_UNSUPPORTED;\r
	388	}\r
	389	}\r
	390	\r
	391	return EFI_UNSUPPORTED;\r
	392	}\r
	393	\r