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/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1991 Microsoft Corporation
Module Name:
ixisa.h
Abstract:
This header file defines the private Hardware Architecture Layer (HAL)
EISA/ISA specific interfaces, defines and structures.
Author:
Jeff Havens (jhavens) 20-Jun-91
Revision History:
--*/
#ifndef _IXISA_
#define _IXISA_
//
// The MAXIMUM_MAP_BUFFER_SIZE defines the maximum map buffers which the system
// will allocate for devices which require phyically contigous buffers.
//
#define MAXIMUM_MAP_BUFFER_SIZE 0x40000
//
// Define the initial buffer allocation size for a map buffers for systems with
// no memory which has a physical address greater than MAXIMUM_PHYSICAL_ADDRESS.
//
#define INITIAL_MAP_BUFFER_SMALL_SIZE 0x10000
//
// Define the initial buffer allocation size for a map buffers for systems with
// no memory which has a physical address greater than MAXIMUM_PHYSICAL_ADDRESS.
//
#define INITIAL_MAP_BUFFER_LARGE_SIZE 0x30000
//
// Define the incremental buffer allocation for a map buffers.
//
#define INCREMENT_MAP_BUFFER_SIZE 0x10000
//
// Define the maximum number of map registers that can be requested at one time
// if actual map registers are required for the transfer.
//
#define MAXIMUM_ISA_MAP_REGISTER 16
//
// Define the maximum physical address which can be handled by an Isa card.
//
#define MAXIMUM_PHYSICAL_ADDRESS 0x01000000
//
// Define the scatter/gather flag for the Map Register Base.
//
#define NO_SCATTER_GATHER 0x00000001
//
// Define the copy buffer flag for the index.
//
#define COPY_BUFFER 0XFFFFFFFF
//
// Define adapter object structure.
//
typedef struct _ADAPTER_OBJECT {
CSHORT Type;
CSHORT Size;
struct _ADAPTER_OBJECT *MasterAdapter;
ULONG MapRegistersPerChannel;
PVOID AdapterBaseVa;
PVOID MapRegisterBase;
ULONG NumberOfMapRegisters;
ULONG CommittedMapRegisters;
struct _WAIT_CONTEXT_BLOCK *CurrentWcb;
KDEVICE_QUEUE ChannelWaitQueue;
PKDEVICE_QUEUE RegisterWaitQueue;
LIST_ENTRY AdapterQueue;
KSPIN_LOCK SpinLock;
PRTL_BITMAP MapRegisters;
PUCHAR PagePort;
UCHAR ChannelNumber;
UCHAR AdapterNumber;
USHORT DmaPortAddress;
UCHAR AdapterMode;
BOOLEAN NeedsMapRegisters;
BOOLEAN MasterDevice;
BOOLEAN Width16Bits;
BOOLEAN ScatterGather;
BOOLEAN IgnoreCount;
BOOLEAN Dma32BitAddresses;
} ADAPTER_OBJECT;
#endif // _IXISA_
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