227 lines
4.9 KiB
C
227 lines
4.9 KiB
C
/*++ 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_ISA_MAP_BUFFER_SIZE 0x40000
|
||
#define MAXIMUM_MAP_BUFFER_SIZE MAXIMUM_ISA_MAP_BUFFER_SIZE
|
||
|
||
//
|
||
// MAXIMUM_PCI_MAP_BUFFER_SIZE defines the maximum map buffers which the system
|
||
// will allocate for 32-bit PCI devices on a 64-bit system.
|
||
//
|
||
|
||
#define MAXIMUM_PCI_MAP_BUFFER_SIZE (64 * 1024 * 1024)
|
||
|
||
//
|
||
// 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 MAXIMUM_PCI_MAP_REGISTER 16
|
||
|
||
//
|
||
// Define the maximum physical address which can be handled by an Isa card
|
||
//
|
||
|
||
#define MAXIMUM_PHYSICAL_ADDRESS 0xffffffff
|
||
|
||
//
|
||
// 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 {
|
||
DMA_ADAPTER DmaHeader;
|
||
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;
|
||
BOOLEAN Dma64BitAddresses;
|
||
} ADAPTER_OBJECT;
|
||
|
||
ULONG
|
||
HalGetDmaAlignment (
|
||
PVOID Conext
|
||
);
|
||
|
||
NTSTATUS
|
||
HalCalculateScatterGatherListSize(
|
||
IN PADAPTER_OBJECT AdapterObject,
|
||
IN OPTIONAL PMDL Mdl,
|
||
IN PVOID CurrentVa,
|
||
IN ULONG Length,
|
||
OUT PULONG ScatterGatherListSize,
|
||
OUT OPTIONAL PULONG pNumberOfMapRegisters
|
||
);
|
||
|
||
NTSTATUS
|
||
HalBuildScatterGatherList (
|
||
IN PADAPTER_OBJECT AdapterObject,
|
||
IN PDEVICE_OBJECT DeviceObject,
|
||
IN PMDL Mdl,
|
||
IN PVOID CurrentVa,
|
||
IN ULONG Length,
|
||
IN PDRIVER_LIST_CONTROL ExecutionRoutine,
|
||
IN PVOID Context,
|
||
IN BOOLEAN WriteToDevice,
|
||
IN PVOID ScatterGatherBuffer,
|
||
IN ULONG ScatterGatherBufferLength
|
||
);
|
||
|
||
|
||
NTSTATUS
|
||
HalBuildMdlFromScatterGatherList(
|
||
IN PADAPTER_OBJECT AdapaterObject,
|
||
IN PSCATTER_GATHER_LIST ScatterGather,
|
||
IN PMDL OriginalMdl,
|
||
OUT PMDL *TargetMdl
|
||
);
|
||
|
||
PHYSICAL_ADDRESS
|
||
__inline
|
||
HalpGetAdapterMaximumPhysicalAddress(
|
||
IN PADAPTER_OBJECT AdapterObject
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This routine determines and returns the maximum physical address that
|
||
can be accessed by the given adapter.
|
||
|
||
Arguments:
|
||
|
||
AdapterObject - Supplies a pointer to the adapter object used by this
|
||
device.
|
||
|
||
Return Value:
|
||
|
||
Returns the maximum physical address that can be accessed by this
|
||
device.
|
||
|
||
--*/
|
||
|
||
{
|
||
PHYSICAL_ADDRESS maximumAddress;
|
||
|
||
//
|
||
// Assume the device requires physical addresses 2GB.
|
||
//
|
||
|
||
maximumAddress.HighPart = 0;
|
||
maximumAddress.LowPart = MAXIMUM_PHYSICAL_ADDRESS - 1;
|
||
|
||
//
|
||
// IoMapTransfer() is sometimes called with a NULL adapter object. In
|
||
// this case, assume the adapter is 32 bit.
|
||
//
|
||
|
||
if (AdapterObject == NULL) {
|
||
return maximumAddress;
|
||
}
|
||
|
||
if (AdapterObject->MasterDevice) {
|
||
|
||
if (AdapterObject->Dma64BitAddresses) {
|
||
|
||
//
|
||
// This device is a master and can handle 64 bit addresses.
|
||
//
|
||
|
||
maximumAddress.QuadPart = (ULONGLONG)-1;
|
||
|
||
} else if(AdapterObject->Dma32BitAddresses) {
|
||
|
||
//
|
||
// This device is a master and can handle 32 bit addresses.
|
||
//
|
||
|
||
maximumAddress.LowPart = (ULONG)-1;
|
||
}
|
||
}
|
||
|
||
return maximumAddress;
|
||
}
|
||
|
||
|
||
#endif // _IXISA_
|