diff options
| author | Dandan Bi <dandan.bi@intel.com> | 2016-12-15 20:52:52 +0800 |
|---|---|---|
| committer | Hao Wu <hao.a.wu@intel.com> | 2016-12-19 09:19:54 +0800 |
| commit | 43b7cd61c93c9d85e97ff63b2e2cf2e7f4bb2db7 (patch) | |
| tree | a089719623cbec123fd90818a9d1381493e75334 | |
| parent | 1525ff38cbbdba0b97c43b73183b6d9aa2c7fb93 (diff) | |
| download | edk2-platforms-43b7cd61c93c9d85e97ff63b2e2cf2e7f4bb2db7.tar.xz | |
MdeModulePkg/NonDiscoverablePciDeviceDxe: Add comments for functions
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
5 files changed, 469 insertions, 14 deletions
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/ComponentName.c b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/ComponentName.c index 6e51d00fe4..0e6ebecded 100644 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/ComponentName.c +++ b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/ComponentName.c @@ -30,6 +30,27 @@ EFI_UNICODE_STRING_TABLE mDriverNameTable[] = { EFI_COMPONENT_NAME_PROTOCOL gComponentName;
+/**
+ Retrieves a Unicode string that is the user readable name of the UEFI Driver.
+
+ @param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param Language A pointer to a three character ISO 639-2 language identifier.
+ This is the language of the driver name that that the caller
+ is requesting, and it must match one of the languages specified
+ in SupportedLanguages. The number of languages supported by a
+ driver is up to the driver writer.
+ @param DriverName A pointer to the Unicode string to return. This Unicode string
+ is the name of the driver specified by This in the language
+ specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string for the Driver specified by This
+ and the language specified by Language was returned
+ in DriverName.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
+ @retval EFI_UNSUPPORTED The driver specified by This does not support the
+ language specified by Language.
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -48,6 +69,32 @@ NonDiscoverablePciGetDriverName ( );
}
+/**
+ Retrieves a Unicode string that is the user readable name of the controller
+ that is being managed by an UEFI Driver.
+
+ @param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.
+ @param DeviceHandle The handle of a controller that the driver specified by
+ This is managing. This handle specifies the controller
+ whose name is to be returned.
+ @param ChildHandle The handle of the child controller to retrieve the name
+ of. This is an optional parameter that may be NULL. It
+ will be NULL for device drivers. It will also be NULL
+ for a bus drivers that wish to retrieve the name of the
+ bus controller. It will not be NULL for a bus driver
+ that wishes to retrieve the name of a child controller.
+ @param Language A pointer to a three character ISO 639-2 language
+ identifier. This is the language of the controller name
+ that that the caller is requesting, and it must match one
+ of the languages specified in SupportedLanguages. The
+ number of languages supported by a driver is up to the
+ driver writer.
+ @param ControllerName A pointer to the Unicode string to return. This Unicode
+ string is the name of the controller specified by
+ ControllerHandle and ChildHandle in the language
+ specified by Language from the point of view of the
+ driver specified by This.
+**/
STATIC
EFI_STATUS
EFIAPI
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.c b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.c index 0fcf2b2ec1..876e99fc87 100644 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.c +++ b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.c @@ -49,6 +49,19 @@ SupportedNonDiscoverableDevices [] = { // - 6.3 Protocol Handler Services
//
+/**
+ Supported function of Driver Binding protocol for this driver.
+ Test to see if this driver supports ControllerHandle.
+
+ @param This Protocol instance pointer.
+ @param DeviceHandle Handle of device to test.
+ @param RemainingDevicePath A pointer to the device path.
+ it should be ignored by device driver.
+
+ @retval EFI_SUCCESS This driver supports this device.
+ @retval other This driver does not support this device.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -103,6 +116,19 @@ CloseProtocol: return Status;
}
+/**
+ This routine is called right after the .Supported() called and
+ Start this driver on ControllerHandle.
+
+ @param This Protocol instance pointer.
+ @param DeviceHandle Handle of device to bind driver to.
+ @param RemainingDevicePath A pointer to the device path.
+ it should be ignored by device driver.
+
+ @retval EFI_SUCCESS This driver is added to this device.
+ @retval other Some error occurs when binding this driver to this device.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -153,7 +179,18 @@ FreeDev: return Status;
}
+/**
+ Stop this driver on ControllerHandle.
+
+ @param This Protocol instance pointer.
+ @param DeviceHandle Handle of device to stop driver on.
+ @param NumberOfChildren Not used.
+ @param ChildHandleBuffer Not used.
+ @retval EFI_SUCCESS This driver is removed from this device.
+ @retval other Some error occurs when removing this driver from this device.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -209,9 +246,16 @@ STATIC EFI_DRIVER_BINDING_PROTOCOL gDriverBinding = { NULL
};
-//
-// Entry point of this driver.
-//
+/**
+ Entry point of this driver.
+
+ @param ImageHandle Image handle this driver.
+ @param SystemTable Pointer to the System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurred when executing this entry point.
+
+**/
EFI_STATUS
EFIAPI
NonDiscoverablePciDeviceDxeEntryPoint (
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf index 5faa894513..ac551a82ab 100644 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf +++ b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf @@ -1,4 +1,6 @@ ## @file
+# PCI I/O driver for non-discoverable devices.
+#
# Copyright (C) 2016, Linaro Ltd.
#
# This program and the accompanying materials are licensed and made available
@@ -44,11 +46,11 @@ gEfiCpuArchProtocolGuid ## CONSUMES
[Guids]
- gEdkiiNonDiscoverableAhciDeviceGuid
- gEdkiiNonDiscoverableEhciDeviceGuid
- gEdkiiNonDiscoverableNvmeDeviceGuid
- gEdkiiNonDiscoverableOhciDeviceGuid
- gEdkiiNonDiscoverableSdhciDeviceGuid
- gEdkiiNonDiscoverableUfsDeviceGuid
- gEdkiiNonDiscoverableUhciDeviceGuid
- gEdkiiNonDiscoverableXhciDeviceGuid
+ gEdkiiNonDiscoverableAhciDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableEhciDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableNvmeDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableOhciDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableSdhciDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableUfsDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableUhciDeviceGuid ## CONSUMES ## GUID
+ gEdkiiNonDiscoverableXhciDeviceGuid ## CONSUMES ## GUID
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c index f9b13a5240..1ffbdfa5f6 100644 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c +++ b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c @@ -28,9 +28,14 @@ typedef struct { UINTN NumberOfBytes;
} NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO;
-//
-// Get the resource associated with BAR number 'BarIndex'.
-//
+/**
+ Get the resource associated with BAR number 'BarIndex'.
+
+ @param Dev Point to the NON_DISCOVERABLE_PCI_DEVICE instance.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory operation to perform.
+ @param Descriptor Points to the address space descriptor
+**/
STATIC
EFI_STATUS
GetBarResource (
@@ -61,6 +66,21 @@ GetBarResource ( return EFI_NOT_FOUND;
}
+/**
+ Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
+ satisfied or after a defined duration.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory operation to perform.
+ @param Offset The offset within the selected BAR to start the memory operation.
+ @param Mask Mask used for the polling criteria.
+ @param Value The comparison value used for the polling exit criteria.
+ @param Delay The number of 100 ns units to poll.
+ @param Result Pointer to the last value read from the memory location.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -79,6 +99,21 @@ PciIoPollMem ( return EFI_UNSUPPORTED;
}
+/**
+ Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
+ satisfied or after a defined duration.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory operation to perform.
+ @param Offset The offset within the selected BAR to start the memory operation.
+ @param Mask Mask used for the polling criteria.
+ @param Value The comparison value used for the polling exit criteria.
+ @param Delay The number of 100 ns units to poll.
+ @param Result Pointer to the last value read from the memory location.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -97,6 +132,22 @@ PciIoPollIo ( return EFI_UNSUPPORTED;
}
+/**
+ Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
+
+ @param Width Signifies the width of the memory or I/O operations.
+ @param Count The number of memory or I/O operations to perform.
+ @param DstStride The stride of the destination buffer.
+ @param Dst For read operations, the destination buffer to store the results. For write
+ operations, the destination buffer to write data to.
+ @param SrcStride The stride of the source buffer.
+ @param Src For read operations, the source buffer to read data from. For write
+ operations, the source buffer to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI controller.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -148,6 +199,26 @@ PciIoMemRW ( return EFI_SUCCESS;
}
+/**
+ Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory or I/O operation to perform.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI controller.
+ @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
+ @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
+ valid for the PCI BAR specified by BarIndex.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -215,6 +286,26 @@ PciIoMemRead ( return EFI_INVALID_PARAMETER;
}
+/**
+ Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory or I/O operation to perform.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI controller.
+ @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
+ @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
+ valid for the PCI BAR specified by BarIndex.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -282,6 +373,19 @@ PciIoMemWrite ( return EFI_INVALID_PARAMETER;
}
+/**
+ Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory or I/O operation to perform.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -298,6 +402,19 @@ PciIoIoRead ( return EFI_UNSUPPORTED;
}
+/**
+ Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for the memory or I/O operation to perform.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -314,6 +431,17 @@ PciIoIoWrite ( return EFI_UNSUPPORTED;
}
+/**
+ Enable a PCI driver to access PCI config space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -350,6 +478,22 @@ PciIoPciRead ( return PciIoMemRW (Width, Count, 1, Buffer, 1, Address);
}
+/**
+ Enable a PCI driver to access PCI config space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory or I/O operations.
+ @param Offset The offset within the selected BAR to start the memory or I/O operation.
+ @param Count The number of memory or I/O operations to perform.
+ @param Buffer For read operations, the destination buffer to store the results. For write
+ operations, the source buffer to write data from
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI controller.
+ @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
+ valid for the PCI BAR specified by BarIndex.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -378,6 +522,24 @@ PciIoPciWrite ( return PciIoMemRW (Width, Count, 1, Address, 1, Buffer);
}
+/**
+ Enables a PCI driver to copy one region of PCI memory space to another region of PCI
+ memory space.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Width Signifies the width of the memory operations.
+ @param DestBarIndex The BAR index in the standard PCI Configuration header to use as the
+ base address for the memory operation to perform.
+ @param DestOffset The destination offset within the BAR specified by DestBarIndex to
+ start the memory writes for the copy operation.
+ @param SrcBarIndex The BAR index in the standard PCI Configuration header to use as the
+ base address for the memory operation to perform.
+ @param SrcOffset The source offset within the BAR specified by SrcBarIndex to start
+ the memory reads for the copy operation.
+ @param Count The number of memory operations to perform. Bytes moved is Width
+ size * Count, starting at DestOffset and SrcOffset.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -395,6 +557,25 @@ PciIoCopyMem ( return EFI_UNSUPPORTED;
}
+/**
+ Provides the PCI controller-specific addresses needed to access system memory.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Operation Indicates if the bus master is going to read or write to system memory.
+ @param HostAddress The system memory address to map to the PCI controller.
+ @param NumberOfBytes On input the number of bytes to map. On output the number of bytes
+ that were mapped.
+ @param DeviceAddress The resulting map address for the bus master PCI controller to use to
+ access the hosts HostAddress.
+ @param Mapping A resulting value to pass to Unmap().
+
+ @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -461,6 +642,15 @@ CoherentPciIoMap ( return EFI_SUCCESS;
}
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -484,6 +674,25 @@ CoherentPciIoUnmap ( return EFI_SUCCESS;
}
+/**
+ Allocates pages.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Type This parameter is not used and must be ignored.
+ @param MemoryType The type of memory to allocate, EfiBootServicesData or
+ EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param HostAddress A pointer to store the base system memory address of the
+ allocated range.
+ @param Attributes The requested bit mask of attributes for the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
+ MEMORY_WRITE_COMBINE and MEMORY_CACHED.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -526,6 +735,16 @@ CoherentPciIoAllocateBuffer ( return Status;
}
+/**
+ Frees memory that was allocated in function CoherentPciIoAllocateBuffer ().
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Pages The number of pages to free.
+ @param HostAddress The base system memory address of the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -539,6 +758,17 @@ CoherentPciIoFreeBuffer ( return EFI_SUCCESS;
}
+/**
+ Frees memory that was allocated in function NonCoherentPciIoAllocateBuffer ().
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Pages The number of pages to free.
+ @param HostAddress The base system memory address of the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+ @retval others The operation contain some errors.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -604,6 +834,25 @@ FreeAlloc: return Status;
}
+/**
+ Allocates pages.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Type This parameter is not used and must be ignored.
+ @param MemoryType The type of memory to allocate, EfiBootServicesData or
+ EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param HostAddress A pointer to store the base system memory address of the
+ allocated range.
+ @param Attributes The requested bit mask of attributes for the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
+ MEMORY_WRITE_COMBINE and MEMORY_CACHED.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -702,6 +951,25 @@ FreeBuffer: return Status;
}
+/**
+ Provides the PCI controller-specific addresses needed to access system memory.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Operation Indicates if the bus master is going to read or write to system memory.
+ @param HostAddress The system memory address to map to the PCI controller.
+ @param NumberOfBytes On input the number of bytes to map. On output the number of bytes
+ that were mapped.
+ @param DeviceAddress The resulting map address for the bus master PCI controller to use to
+ access the hosts HostAddress.
+ @param Mapping A resulting value to pass to Unmap().
+
+ @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -816,6 +1084,15 @@ FreeMapInfo: return Status;
}
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -859,6 +1136,12 @@ NonCoherentPciIoUnmap ( return EFI_SUCCESS;
}
+/**
+ Flushes all PCI posted write transactions from a PCI host bridge to system memory.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -869,6 +1152,19 @@ PciIoFlush ( return EFI_SUCCESS;
}
+/**
+ Retrieves this PCI controller's current PCI bus number, device number, and function number.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param SegmentNumber The PCI controller's current PCI segment number.
+ @param BusNumber The PCI controller's current PCI bus number.
+ @param DeviceNumber The PCI controller's current PCI device number.
+ @param FunctionNumber The PCI controller's current PCI function number.
+
+ @retval EFI_SUCCESS The PCI controller location was returned.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -895,6 +1191,25 @@ PciIoGetLocation ( return EFI_SUCCESS;
}
+/**
+ Performs an operation on the attributes that this PCI controller supports. The operations include
+ getting the set of supported attributes, retrieving the current attributes, setting the current
+ attributes, enabling attributes, and disabling attributes.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Operation The operation to perform on the attributes for this PCI controller.
+ @param Attributes The mask of attributes that are used for Set, Enable, and Disable
+ operations.
+ @param Result A pointer to the result mask of attributes that are returned for the Get
+ and Supported operations.
+
+ @retval EFI_SUCCESS The operation on the PCI controller's attributes was completed.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+ @retval EFI_UNSUPPORTED one or more of the bits set in
+ Attributes are not supported by this PCI controller or one of
+ its parent bridges when Operation is Set, Enable or Disable.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -952,6 +1267,28 @@ PciIoAttributes ( return EFI_SUCCESS;
}
+/**
+ Gets the attributes that this PCI controller supports setting on a BAR using
+ SetBarAttributes(), and retrieves the list of resource descriptors for a BAR.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for resource range. The legal range for this field is 0..5.
+ @param Supports A pointer to the mask of attributes that this PCI controller supports
+ setting for this BAR with SetBarAttributes().
+ @param Resources A pointer to the ACPI 2.0 resource descriptors that describe the current
+ configuration of this BAR of the PCI controller.
+
+ @retval EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI
+ controller supports are returned in Supports. If Resources
+ is not NULL, then the ACPI 2.0 resource descriptors that the PCI
+ controller is currently using are returned in Resources.
+ @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
+ @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate
+ Resources.
+
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -1003,6 +1340,19 @@ PciIoGetBarAttributes ( return EFI_SUCCESS;
}
+/**
+ Sets the attributes for a range of a BAR on a PCI controller.
+
+ @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param Attributes The mask of attributes to set for the resource range specified by
+ BarIndex, Offset, and Length.
+ @param BarIndex The BAR index of the standard PCI Configuration header to use as the
+ base address for resource range. The legal range for this field is 0..5.
+ @param Offset A pointer to the BAR relative base address of the resource range to be
+ modified by the attributes specified by Attributes.
+ @param Length A pointer to the length of the resource range to be modified by the
+ attributes specified by Attributes.
+**/
STATIC
EFI_STATUS
EFIAPI
@@ -1039,6 +1389,12 @@ STATIC CONST EFI_PCI_IO_PROTOCOL PciIoTemplate = 0
};
+/**
+ Initialize PciIo Protocol.
+
+ @param Dev Point to NON_DISCOVERABLE_PCI_DEVICE instance.
+
+**/
VOID
InitializePciIoProtocol (
NON_DISCOVERABLE_PCI_DEVICE *Dev
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.h b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.h index 4496148629..e641189267 100644 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.h +++ b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.h @@ -102,6 +102,12 @@ typedef struct { LIST_ENTRY UncachedAllocationList;
} NON_DISCOVERABLE_PCI_DEVICE;
+/**
+ Initialize PciIo Protocol.
+
+ @param Device Point to NON_DISCOVERABLE_PCI_DEVICE instance.
+
+**/
VOID
InitializePciIoProtocol (
NON_DISCOVERABLE_PCI_DEVICE *Device
|