154 lines
3.0 KiB
C
154 lines
3.0 KiB
C
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#ident "@(#) NEC jxmapio.c 1.6 94/10/17 11:37:41"
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/*++
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Copyright (c) 1991-1994 Microsoft Corporation
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Module Name:
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jxmapio.c
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Abstract:
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This module implements the mapping of HAL I/O space a MIPS R3000
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or R4000 Jazz system.
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Environment:
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Kernel mode
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Revision History:
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--*/
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/*
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* Original source: Build Number 1.612
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*
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* Modify for R98(MIPS/R4400)
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*
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***********************************************************************
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*
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* S001 94.06/02 T.Samezima
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*
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* Del I/O space mapping
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*
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* Add set kseg1 base I/O address
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*
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***********************************************************************
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*
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* S002 94.6/10 T.Samezima
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*
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* Del Compile err
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*
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***********************************************************************
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*
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* S003 94.7/5 T.Samezima
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*
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* Del Error check
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*
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* K000 94/10/11 N.Kugimoto
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* Fix 807 Base
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*/
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#include "halp.h"
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//
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// Put all code for HAL initialization in the INIT section. It will be
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// deallocated by memory management when phase 1 initialization is
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// completed.
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//
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#if defined(ALLOC_PRAGMA)
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#pragma alloc_text(INIT, HalpMapIoSpace)
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#endif
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//
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// Define global data used to locate the EISA control space and the realtime
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// clock registers.
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//
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PVOID HalpEisaControlBase;
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PVOID HalpEisaMemoryBase; //K000
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PVOID HalpRealTimeClockBase;
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BOOLEAN
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HalpMapIoSpace (
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VOID
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)
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/*++
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Routine Description:
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This routine maps the HAL I/O space for a MIPS R3000 or R4000 Jazz
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system.
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Arguments:
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None.
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Return Value:
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If the initialization is successfully completed, than a value of TRUE
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is returned. Otherwise, a value of FALSE is returned.
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--*/
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{
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/* Start M001 */
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#if !defined(_R98_)
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PHYSICAL_ADDRESS physicalAddress;
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//
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// Map EISA control space. Map all 16 slots. This is done so the NMI
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// code can probe the cards.
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//
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physicalAddress.HighPart = 0;
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physicalAddress.LowPart = EISA_CONTROL_PHYSICAL_BASE;
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HalpEisaControlBase = MmMapIoSpace(physicalAddress,
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PAGE_SIZE * 16,
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FALSE);
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//
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// Map realtime clock registers.
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//
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physicalAddress.LowPart = RTCLOCK_PHYSICAL_BASE;
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HalpRealTimeClockBase = MmMapIoSpace(physicalAddress,
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PAGE_SIZE,
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FALSE);
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#else // #if !defined(_R98_)
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//
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// set EISA control space.
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//
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HalpEisaControlBase = (PVOID)(KSEG1_BASE + EISA_CONTROL_PHYSICAL_BASE); // S002
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//
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// set realtime clock registers.
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//
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HalpRealTimeClockBase = (PVOID)(KSEG1_BASE + RTCLOCK_PHYSICAL_BASE); // S002
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#endif // #if !defined(_R98_)
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/* End M001 */
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//
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// If either mapped address is NULL, then return FALSE as the function
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// value. Otherwise, return TRUE.
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//
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/* Start S003 */
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// if ((HalpEisaControlBase == NULL) ||
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// (HalpRealTimeClockBase == NULL)) {
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// return FALSE;
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// } else {
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// return TRUE;
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// }
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return TRUE;
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/* End S003 */
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}
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