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/*++
Copyright (c) 1992 AST Research Inc.
Module Name:
astebi.c
Abstract:
NT HAL to AST EBI2 translation file. This file contains routines that
convert NT HAL calls to AST EBI2 calls.
Author:
Bob Beard (v-bobb) 24-Jul-1992
Environment:
Kernel mode only.
Revision History:
Quang Phan (v-quangp) 27-Aug-1992: Moved DisplPanel from astdetct.c
into to this module because astdetct is also used for the NT setup
program.
--*/
#include "halp.h"
#include "astebiii.h"
#include "astdisp.h"
extern VOID* EBI2_MMIOTable[];
extern EBI_II EBI2_CallTab;
#define IRQ0_VECTOR_BASE PRIMARY_VECTOR_BASE
#define ALL_IRQS (0x0000fffb)
#define ALL_PROCS (0xffffffff)
static UCHAR hex_to_asc(SHORT x)
{
return(x < 0xa ? x+'0' : x-10+'A');
}
VOID
HalpInitializePICs()
/*++
Routine Description:
Initialize the AST Interrupt environment. Called once by P0 during
Phase 0.
Arguments:
none.
Return Value:
NONE
--*/
{
dWord subsystemType;
//
// Turn off all interrupts while setting the interrupt environment
//
_asm pushfd
_asm cli
//
// Check to see the type of interrupt subsystem
//
EBI2_CallTab.GetIntSubsysType( EBI2_MMIOTable, &subsystemType );
if ( subsystemType != EBI_INT_SUBSYS_ADI)
DisplPanel(HALIntSubsystemProblem);
//
// Set the IRQ vectors 0 & 8
//
if ( EBI2_CallTab.SetIRQVectorAssign( EBI2_MMIOTable, 0, IRQ0_VECTOR_BASE) )
DisplPanel(HALIntSubsystemProblem);
if ( EBI2_CallTab.SetIRQVectorAssign( EBI2_MMIOTable, 8, IRQ0_VECTOR_BASE+8) )
DisplPanel(HALIntSubsystemProblem);
//
// Mask off all Interrupts for All Processors Globally
// ( Except chain interrupt, IPI and SPI )
//
if ( EBI2_CallTab.SetGlobalIntMask( EBI2_MMIOTable, ALL_IRQS) )
DisplPanel(HALIntSubsystemProblem);
//
// Switch to Distributed Interrupt Handling
//
EBI2_CallTab.SetAdvIntMode( EBI2_MMIOTable );
//
// Cancel all pending interrupts (except IPI and SPI)
//
if ( EBI2_CallTab.CancelInterrupt( EBI2_MMIOTable, ALL_IRQS, ALL_PROCS) )
DisplPanel(HALIntSubsystemProblem);
//
// Return interrupts to entry state
//
_asm popfd
}
VOID
ASTEnableCaches()
/*++
Routine Description:
Enable the internal and external caches of the processor that calls
this routine.
Arguments:
none.
Return Value:
NONE
--*/
{
if ( EBI2_CallTab.DisableRAMCache( EBI2_MMIOTable ) )
DisplPanel(HALCacheEnableProblem);
if ( EBI2_CallTab.EnableRAMCache( EBI2_MMIOTable ) )
DisplPanel(HALCacheEnableProblem);
}
VOID
DisplPanel(ULONG x)
/*++
Routine Description:
Display 2 hex digits on front panel of AST Manhattan. All digits
are preceded by a "H " (H blank) to indicate HAL output.
Arguments:
A SHORT value to output as hex digits.
Return Value:
none.
--*/
{
UCHAR digit1,digit2;
#define DISP_ADR (PUCHAR) 0xec
#define DISP_DAT (PUCHAR) 0xed
digit1 = hex_to_asc((SHORT)((x & 0xf0) >> 4));
digit2 = hex_to_asc((SHORT)(x & 0x0f));
// digit 4
WRITE_PORT_UCHAR(DISP_ADR, 7);
WRITE_PORT_UCHAR(DISP_DAT, 'H');
// digit 3
WRITE_PORT_UCHAR(DISP_ADR, 6);
WRITE_PORT_UCHAR(DISP_DAT, ' ');
// digit 2
WRITE_PORT_UCHAR(DISP_ADR, 5);
WRITE_PORT_UCHAR(DISP_DAT, digit1);
// digit 1
WRITE_PORT_UCHAR(DISP_ADR, 4);
WRITE_PORT_UCHAR(DISP_DAT, digit2);
}
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