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