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CM_EISA_FUNCTION_INFORMATION structure

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

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

Specifies the type of device.

EisaMemory

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

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

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

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

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

Header

Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

See also

CM_EISA_SLOT_INFORMATION
HalGetBusData
HalGetBusDataByOffset

 

 

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