CM_EISA_FUNCTION_INFORMATION structure (miniport.h)
The CM_EISA_FUNCTION_INFORMATION structure defines detailed EISA configuration information returned by HalGetBusData for the input *BusDataType *EisaConfiguration, or by HalGetBusDataByOffset for the input *BusDataType *EisaConfiguration and the Offset zero, assuming the caller-allocated Buffer is of sufficient Length.
Syntax
typedef struct _CM_EISA_FUNCTION_INFORMATION {
ULONG CompressedId;
UCHAR IdSlotFlags1;
UCHAR IdSlotFlags2;
UCHAR MinorRevision;
UCHAR MajorRevision;
UCHAR Selections[26];
UCHAR FunctionFlags;
UCHAR TypeString[80];
EISA_MEMORY_CONFIGURATION EisaMemory[9];
EISA_IRQ_CONFIGURATION EisaIrq[7];
EISA_DMA_CONFIGURATION EisaDma[4];
EISA_PORT_CONFIGURATION EisaPort[20];
UCHAR InitializationData[60];
} CM_EISA_FUNCTION_INFORMATION, *PCM_EISA_FUNCTION_INFORMATION;
Members
CompressedId
The EISA compressed identification of the device at this slot. The value is identical to the CompressedId member of the CM_EISA_SLOT_INFORMATION structure.
IdSlotFlags1
The EISA slot identification flags.
IdSlotFlags2
The EISA slot identification flags.
MinorRevision
Information supplied by the manufacturer.
MajorRevision
Information supplied by the manufacturer.
Selections[26]
The EISA selections for the device.
FunctionFlags
Indicates which of the members has available information. Callers can use the following system-defined masks to determine whether a particular type of configuration information can be or has been returned by HalGetBusData or HalGetBusDataByOffset:
EISA_FUNCTION_ENABLED
EISA_FREE_FORM_DATA
EISA_HAS_PORT_INIT_ENTRY
EISA_HAS_PORT_RANGE
EISA_HAS_DMA_ENTRY
EISA_HAS_IRQ_ENTRY
EISA_HAS_MEMORY_ENTRY
EISA_HAS_TYPE_ENTRY
EISA_HAS_INFORMATION
The EISA_HAS_INFORMATION mask is a combination of the following:
EISA_HAS_PORT_RANGE
EISA_HAS_DMA_ENTRY
EISA_HAS_IRQ_ENTRY
EISA_HAS_MEMORY_ENTRY
EISA_HAS_TYPE_ENTRY
TypeString[80]
Specifies the type of device.
EisaMemory[9]
Describes the EISA device memory configuration information, defined as follows:
typedef struct _EISA_MEMORY_CONFIGURATION {
EISA_MEMORY_TYPE ConfigurationByte;
UCHAR DataSize;
USHORT AddressLowWord;
UCHAR AddressHighByte;
USHORT MemorySize;
} EISA_MEMORY_CONFIGURATION, *PEISA_MEMORY_CONFIGURATION;
EisaIrq[7]
Describes the EISA interrupt configuration information, defined as follows:
typedef struct _EISA_IRQ_CONFIGURATION {
EISA_IRQ_DESCRIPTOR ConfigurationByte;
UCHAR Reserved;
} EISA_IRQ_CONFIGURATION, *PEISA_IRQ_CONFIGURATION;
EisaDma[4]
Describes the EISA DMA configuration information, defined as follows:
typedef struct _EISA_DMA_CONFIGURATION {
DMA_CONFIGURATION_BYTE0 ConfigurationByte0;
DMA_CONFIGURATION_BYTE1 ConfigurationByte1;
} EISA_DMA_CONFIGURATION, *PEISA_DMA_CONFIGURATION;
EisaPort[20]
Describes the EISA device port configuration information, defined as follows:
typedef struct _EISA_PORT_CONFIGURATION {
EISA_PORT_DESCRIPTOR Configuration;
USHORT PortAddress;
} EISA_PORT_CONFIGURATION, *PEISA_PORT_CONFIGURATION;
InitializationData[60]
Vendor-supplied, device-specific initialization data, if any.
Remarks
The information returned by HalGetBusData or HalGetBusDataByOffset in CM_EISA_FUNCTION_INFORMATION and/or in the CM_EISA_SLOT_INFORMATION header immediately preceding it is read-only.
Requirements
| Requirement | Value |
|---|---|
| Header | miniport.h (include Wdm.h, Ntddk.h, Ntifs.h, Miniport.h) |