216 lines
5.2 KiB
C
216 lines
5.2 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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eisa.h
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Abstract:
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This module contains the i386 EISA bus specific header file.
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Author:
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Shie-Lin Tzong (shielint) 6-June-1991
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Revision History:
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--*/
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//
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// SU module's version of the memory descriptor
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//
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typedef struct _MEMORY_LIST_ENTRY {
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ULONG BlockBase;
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ULONG BlockSize;
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} MEMORY_LIST_ENTRY, *PMEMORY_LIST_ENTRY;
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//
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// Memory configuration of eisa data block structure
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//
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typedef struct _EISA_MEMORY_TYPE {
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UCHAR ReadWrite: 1;
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UCHAR Cached : 1;
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UCHAR Reserved0 :1;
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UCHAR Type:2;
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UCHAR Shared:1;
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UCHAR Reserved1 :1;
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UCHAR MoreEntries : 1;
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} EISA_MEMORY_TYPE, *PEISA_MEMORY_TYPE;
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typedef struct _BTEISA_MEMORY_CONFIGURATION {
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EISA_MEMORY_TYPE ConfigurationByte;
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UCHAR DataSize;
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USHORT PhysicalAddress_LSW;
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UCHAR PhysicalAddress_MSB;
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USHORT MemorySize;
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} BTEISA_MEMORY_CONFIGURATION, *PBTEISA_MEMORY_CONFIGURATION;
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//
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// Interrupt configurationn of eisa data block structure
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//
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typedef struct _EISA_IRQ_DESCRIPTOR {
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UCHAR Interrupt : 4;
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UCHAR Reserved :1;
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UCHAR LevelTriggered :1;
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UCHAR Shared : 1;
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UCHAR MoreEntries : 1;
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} EISA_IRQ_DESCRIPTOR, *PEISA_IRQ_DESCRIPTOR;
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typedef struct _BTEISA_IRQ_CONFIGURATION {
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EISA_IRQ_DESCRIPTOR ConfigurationByte;
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UCHAR Reserved;
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} BTEISA_IRQ_CONFIGURATION, *PBTEISA_IRQ_CONFIGURATION;
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//
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// DMA description of eisa data block structure
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//
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typedef struct _DMA_CONFIG_BYTE0 {
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UCHAR Channel : 3;
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UCHAR Reserved : 3;
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UCHAR Shared :1;
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UCHAR MoreEntries :1;
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} DMA_CONFIG_BYTE0;
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typedef struct _DMA_CONFIG_BYTE1 {
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UCHAR Reserved0 : 2;
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UCHAR TransferSize : 2;
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UCHAR Timing : 2;
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UCHAR Reserved1 : 2;
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} DMA_CONFIG_BYTE1;
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typedef struct _BTEISA_DMA_CONFIGURATION {
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DMA_CONFIG_BYTE0 ConfigurationByte0;
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DMA_CONFIG_BYTE1 ConfigurationByte1;
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} BTEISA_DMA_CONFIGURATION, *PBTEISA_DMA_CONFIGURATION;
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typedef struct _EISA_PORT_DESCRIPTOR {
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UCHAR NumberPorts : 5;
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UCHAR Reserved :1;
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UCHAR Shared :1;
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UCHAR MoreEntries : 1;
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} EISA_PORT_DESCRIPTOR, *TEISA_PORT_DESCRIPTOR;
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typedef struct _BTEISA_PORT_CONFIGURATION {
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EISA_PORT_DESCRIPTOR Configuration;
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USHORT PortAddress;
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} BTEISA_PORT_CONFIGURATION, *PBTEISA_PORT_CONFIGURATION;
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typedef struct _BTEISA_SLOT_INFORMATION {
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UCHAR ReturnCode;
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UCHAR ReturnFlags;
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UCHAR MajorRevision;
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UCHAR MinorRevision;
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USHORT Checksum;
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UCHAR NumberFunctions;
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UCHAR FunctionInformation;
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ULONG CompressedId;
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} BTEISA_SLOT_INFORMATION, *PBTEISA_SLOT_INFORMATION,
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far *FPBTEISA_SLOT_INFORMATION;
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typedef struct _BTEISA_FUNCTION_INFORMATION {
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ULONG CompressedId;
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UCHAR IdSlotFlags1;
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UCHAR IdSlotFlags2;
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UCHAR MinorRevision;
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UCHAR MajorRevision;
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UCHAR Selections[26];
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UCHAR FunctionFlags;
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UCHAR TypeString[80];
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BTEISA_MEMORY_CONFIGURATION EisaMemory[9];
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BTEISA_IRQ_CONFIGURATION EisaIrq[7];
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BTEISA_DMA_CONFIGURATION EisaDma[4];
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BTEISA_PORT_CONFIGURATION EisaPort[20];
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UCHAR InitializationData[60];
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} BTEISA_FUNCTION_INFORMATION, *PBTEISA_FUNCTION_INFORMATION,
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far *FPBTEISA_FUNCTION_INFORMATION;
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//
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// Masks for EISA function information
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//
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#define EISA_FUNCTION_ENABLED 0x80
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#define EISA_FREE_FORM_DATA 0x40
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#define EISA_HAS_PORT_INIT_ENTRY 0x20
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#define EISA_HAS_PORT_RANGE 0x10
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#define EISA_HAS_DMA_ENTRY 0x08
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#define EISA_HAS_IRQ_ENTRY 0x04
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#define EISA_HAS_MEMORY_ENTRY 0x02
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#define EISA_HAS_TYPE_ENTRY 0x01
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#define EISA_HAS_INFORMATION EISA_HAS_PORT_RANGE + \
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EISA_HAS_DMA_ENTRY + \
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EISA_HAS_IRQ_ENTRY + \
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EISA_HAS_MEMORY_ENTRY + \
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EISA_HAS_TYPE_ENTRY
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//
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// Masks for EISA memory configuration
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//
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#define EISA_MORE_ENTRIES 0x80
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#define EISA_SYSTEM_MEMORY 0x00
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#define EISA_MEMORY_TYPE_RAM 0x01
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//
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// Returned error code for EISA bios call
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//
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#define EISA_INVALID_SLOT 0x80
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#define EISA_INVALID_FUNCTION 0x81
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#define EISA_INVALID_CONFIGURATION 0x82
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#define EISA_EMPTY_SLOT 0x83
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#define EISA_INVALID_BIOS_CALL 0x86
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//
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// Misc. definitions
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//
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#define _16MEGB ((ULONG)16 * 1024 * 1024)
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#define _64MEGB ((ULONG)64 * 1024 * 1024)
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BOOLEAN
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FindFunctionInformation (
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IN UCHAR SlotFlags,
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IN UCHAR FunctionFlags,
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OUT PBTEISA_FUNCTION_INFORMATION Buffer,
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IN BOOLEAN FromBeginning
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);
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USHORT
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CountMemoryBlocks (
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VOID
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);
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ULONG
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EisaConstructMemoryDescriptors (
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VOID
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);
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UCHAR
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BtGetEisaSlotInformation (
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PBTEISA_SLOT_INFORMATION SlotInformation,
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UCHAR Slot
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);
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UCHAR
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BtGetEisaFunctionInformation (
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PBTEISA_FUNCTION_INFORMATION FunctionInformation,
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UCHAR Slot,
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UCHAR Function
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);
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BOOLEAN
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BtIsEisaSystem (
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VOID
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);
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//
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// External References
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//
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extern MEMORY_LIST_ENTRY _far *MemoryDescriptorList;
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