-/**@ file\r
+/** @file\r
+ PCI Hot Plug support functions declaration for PCI Bus module.\r
\r
-Copyright (c) 2006, Intel Corporation \r
-All rights reserved. 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
+Copyright (c) 2006 - 2009, Intel Corporation\r
+All rights reserved. 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
-#ifndef _EFI_PCI_HOT_PLUG_SUPPORT_H\r
-#define _EFI_PCI_HOT_PLUG_SUPPORT_H\r
+**/\r
\r
+#ifndef _EFI_PCI_HOT_PLUG_SUPPORT_H_\r
+#define _EFI_PCI_HOT_PLUG_SUPPORT_H_\r
\r
//\r
-// stall 1 second\r
+// stall 1 second, its unit is 100ns\r
//\r
-#define STALL_1_SECOND 1000000 \r
+#define STALL_1_SECOND 1000000\r
\r
+//\r
+// PCI Hot Plug controller private data\r
+//\r
typedef struct {\r
EFI_EVENT Event;\r
BOOLEAN Initialized;\r
VOID *Padding;\r
} ROOT_HPC_DATA;\r
\r
+//\r
+// Reference of some global variabes\r
+//\r
extern EFI_PCI_HOT_PLUG_INIT_PROTOCOL *gPciHotPlugInit;\r
extern EFI_HPC_LOCATION *gPciRootHpcPool;\r
-extern UINTN gPciRootHpcCount;\r
extern ROOT_HPC_DATA *gPciRootHpcData;\r
\r
/**\r
- Init HPC private data.\r
- \r
- @param Event event object\r
- @param Context HPC private data.\r
+ Event notification function to set Hot Plug controller status.\r
+\r
+ @param Event The event that invoke this function.\r
+ @param Context The calling context, pointer to ROOT_HPC_DATA.\r
+\r
**/\r
VOID\r
EFIAPI\r
);\r
\r
/**\r
- Compare two device path\r
- \r
- @param DevicePath1 the first device path want to be compared.\r
- @param DevicePath2 the first device path want to be compared.\r
- \r
- @retval TRUE equal.\r
- @retval FALSE different.\r
+ Compare two device pathes to check if they are exactly same.\r
+\r
+ @param DevicePath1 A pointer to the first device path data structure.\r
+ @param DevicePath2 A pointer to the second device path data structure.\r
+\r
+ @retval TRUE They are same.\r
+ @retval FALSE They are not same.\r
+\r
**/\r
BOOLEAN\r
EfiCompareDevicePath (\r
);\r
\r
/**\r
- Init hot plug support and root hot plug private data.\r
- \r
+ Check hot plug support and initialize root hot plug private data.\r
+\r
+ If Hot Plug is supported by the platform, call PCI Hot Plug Init protocol\r
+ to get PCI Hot Plug controller's information and constructor the root hot plug\r
+ private data structure.\r
+\r
+ @retval EFI_SUCCESS They are same.\r
+ @retval EFI_UNSUPPORTED No PCI Hot Plug controler on the platform.\r
+ @retval EFI_OUT_OF_RESOURCES No memory to constructor root hot plug private\r
+ data structure.\r
+\r
**/\r
EFI_STATUS\r
InitializeHotPlugSupport (\r
\r
/**\r
Test whether PCI device is hot plug bus.\r
- \r
+\r
@param PciIoDevice PCI device instance.\r
- \r
- @retval EFI_SUCCESS PCI device is hot plug bus.\r
- @retval EFI_NOT_FOUND PCI device is not hot plug bus.\r
+\r
+ @retval TRUE PCI device is a hot plug bus.\r
+ @retval FALSE PCI device is not a hot plug bus.\r
+\r
**/\r
-EFI_STATUS\r
+BOOLEAN\r
IsPciHotPlugBus (\r
PCI_IO_DEVICE *PciIoDevice\r
);\r
\r
/**\r
- Test whether device path is for root pci hot plug bus\r
- \r
- @param HpbDevicePath tested device path\r
- @param HpIndex Return the index of root hot plug in global array.\r
- \r
- @retval TRUE device path is for root pci hot plug\r
- @retval FALSE device path is not for root pci hot plug\r
+ Test whether device path is for root pci hot plug bus.\r
+\r
+ @param HpbDevicePath A pointer to device path data structure to be tested.\r
+ @param HpIndex If HpIndex is not NULL, return the index of root hot\r
+ plug in global array when TRUE is retuned.\r
+\r
+ @retval TRUE The device path is for root pci hot plug bus.\r
+ @retval FALSE The device path is not for root pci hot plug bus.\r
+\r
**/\r
BOOLEAN\r
IsRootPciHotPlugBus (\r
- IN EFI_DEVICE_PATH_PROTOCOL *HpbDevicePath,\r
- OUT UINTN *HpIndex\r
+ IN EFI_DEVICE_PATH_PROTOCOL *HpbDevicePath,\r
+ OUT UINTN *HpIndex OPTIONAL\r
);\r
\r
/**\r
- Test whether device path is for root pci hot plug controller\r
- \r
- @param HpcDevicePath tested device path.\r
- @param HpIndex Return the index of root hot plug in global array.\r
- \r
- @retval TRUE device path is for root pci hot plug controller.\r
- @retval FALSE device path is not for root pci hot plug controller.\r
+ Test whether device path is for root pci hot plug controller.\r
+\r
+ @param HpcDevicePath A pointer to device path data structure to be tested.\r
+ @param HpIndex If HpIndex is not NULL, return the index of root hot\r
+ plug in global array when TRUE is retuned.\r
+\r
+ @retval TRUE The device path is for root pci hot plug controller.\r
+ @retval FALSE The device path is not for root pci hot plug controller.\r
+\r
**/\r
BOOLEAN\r
IsRootPciHotPlugController (\r
);\r
\r
/**\r
- Wrapper for creating event object for HPC \r
- \r
- @param HpIndex index of hot plug device in global array.\r
- @param Event event object.\r
- \r
- @return status of create event invoken.\r
+ Creating event object for PCI Hot Plug controller.\r
+\r
+ @param HpIndex Index of hot plug device in global array.\r
+ @param Event The retuned event that invoke this function.\r
+\r
+ @return Status of create event invoken.\r
+\r
**/\r
EFI_STATUS\r
CreateEventForHpc (\r
- IN UINTN HpIndex,\r
+ IN UINTN HpIndex,\r
OUT EFI_EVENT *Event\r
);\r
\r
/**\r
- Wait for all root HPC initialized.\r
- \r
- @param TimeoutInMicroSeconds microseconds to wait for all root hpc's initialization.\r
+ Wait for all root PCI Hot Plug controller finished initializing.\r
+\r
+ @param TimeoutInMicroSeconds Microseconds to wait for all root HPCs' initialization.\r
+\r
+ @retval EFI_SUCCESS All HPCs initialization finished.\r
+ @retval EFI_TIMEOUT Not ALL HPCs initialization finished in Microseconds.\r
+\r
**/\r
EFI_STATUS\r
AllRootHPCInitialized (\r
);\r
\r
/**\r
- Check HPC capability register block\r
- \r
- @param PciIoDevice PCI device instance.\r
- \r
- @retval EFI_SUCCESS PCI device is HPC.\r
- @retval EFI_NOT_FOUND PCI device is not HPC.\r
+ Check whether PCI-PCI bridge has PCI Hot Plug capability register block.\r
+\r
+ @param PciIoDevice A Pointer to the PCI-PCI bridge.\r
+\r
+ @retval TRUE PCI device is HPC.\r
+ @retval FALSE PCI device is not HPC.\r
+\r
**/\r
-EFI_STATUS\r
+BOOLEAN\r
IsSHPC (\r
- PCI_IO_DEVICE *PciIoDevice\r
+ IN PCI_IO_DEVICE *PciIoDevice\r
);\r
\r
/**\r
- Get resource padding for hot plug bus\r
- \r
- @param PciIoDevice PCI device instance.\r
- \r
- @retval EFI_SUCCESS success get padding and set it into PCI device instance.\r
- @retval EFI_NOT_FOUND PCI device is not a hot plug bus.\r
+ Get resource padding if the specified PCI bridge is a hot plug bus.\r
+\r
+ @param PciIoDevice PCI bridge instance.\r
+\r
**/\r
-EFI_STATUS\r
+VOID\r
GetResourcePaddingForHpb (\r
- IN PCI_IO_DEVICE *PciIoDevice\r
+ IN PCI_IO_DEVICE *PciIoDevice\r
);\r
\r
#endif\r
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