117 lines
2 KiB
C
117 lines
2 KiB
C
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/*++
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Copyright (c) 1991-2000 Microsoft Corporation
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Module Name:
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pbdata.c
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Abstract:
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Declares various data which is specific to PNP ISA bus extender architecture and
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is independent of BIOS.
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Author:
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Shie-Lin Tzong (shielint) July-26-95
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Environment:
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Kernel mode only.
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Revision History:
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--*/
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#include "busp.h"
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// global variable for configuring level of debug spew.
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ULONG PipDebugMask = DEBUG_WARN | DEBUG_ERROR;
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//
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// global varialbe to remember the driver object created
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// by IO mgr.
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//
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PDRIVER_OBJECT PipDriverObject;
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//
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// regPNPISADeviceName
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//
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WCHAR rgzPNPISADeviceName[] = DEVSTR_PNPISA_DEVICE_NAME;
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//
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// Pointers to bus extension data.
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//
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PBUS_EXTENSION_LIST PipBusExtension;
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//
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// PipRegistryPath stores the registry path that we got upon driver entry.
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// This is used later when we're attempting to allocate resources.
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//
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UNICODE_STRING PipRegistryPath;
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//
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// Variables to protect critical region.
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//
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KEVENT PipDeviceTreeLock;
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KEVENT IsaBusNumberLock;
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//
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// Bus Number and DMA control counters
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//
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ULONG BusNumberBuffer [256/sizeof (ULONG)];
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RTL_BITMAP BusNumBMHeader;
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PRTL_BITMAP BusNumBM;
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ULONG ActiveIsaCount;
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USHORT PipFirstInit;
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#if ISOLATE_CARDS
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// current bus "state"
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PNPISA_STATE PipState = PiSWaitForKey;
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//
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// Read_data_port address
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// (This is mainly for convinience. It duplicates the
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// ReadDataPort field in BUS extension structure.)
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//
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ULONG ADDRESS_PORT=0x0279;
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ULONG COMMAND_PORT=0x0a79;
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PUCHAR PipReadDataPort;
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PUCHAR PipCommandPort;
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PUCHAR PipAddressPort;
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//
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// The global pointer to the Read Data Port DevNode
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//
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PDEVICE_INFORMATION PipRDPNode;
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//
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// ActiveIsaCount data port range selection array
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//
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//this conflicts with Compaq 2ndary IDE {0x374, 0x377, 4},
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READ_DATA_PORT_RANGE
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PipReadDataPortRanges[READ_DATA_PORT_RANGE_CHOICES] =
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{{0x274, 0x277, 4},
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{0x3E4, 0x3E7, 4},
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{0x204, 0x207, 4},
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{0x2E4, 0x2E7, 4},
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{0x354, 0x357, 4},
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{0x2F4, 0x2F7, 4}};
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BOOLEAN PipIsolationDisabled;
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#endif
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