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|
title "Interprocessor Interrupt"
;++
;
;Copyright (c) 1991 Microsoft Corporation
;
;Module Name:
;
; ixipi.asm
;
;Abstract:
;
; Provides the HAL support for Interprocessor Interrupts.
; This is the UP version.
;
;Author:
;
; John Vert (jvert) 16-Jul-1991
;
;Revision History:
;
;--
.386p
.xlist
include hal386.inc
include callconv.inc ; calling convention macros
include i386\kimacro.inc
include i386\ix8259.inc
EXTRNP _KiCoprocessorError,0,IMPORT
EXTRNP Kei386EoiHelper,0,IMPORT
EXTRNP _HalBeginSystemInterrupt,3
EXTRNP _HalEndSystemInterrupt,2
extrn _HalpDefaultInterruptAffinity:DWORD
extrn _HalpActiveProcessors:DWORD
page ,132
subttl "Post InterProcessor Interrupt"
INIT SEGMENT DWORD PUBLIC 'CODE'
ASSUME DS:FLAT, ES:FLAT, SS:NOTHING, FS:NOTHING, GS:NOTHING
;++
;
; VOID
; HalInitializeProcessor(
; ULONG Number
; );
;
;Routine Description:
;
; Initialize hal pcr values for current processor (if any)
; (called shortly after processor reaches kernel, before
; HalInitSystem if P0)
;
; IPI's and KeReadir/LowerIrq's must be available once this function
; returns. (IPI's are only used once two or more processors are
; available)
;
;Arguments:
;
; Number - Logical processor number of calling processor
;
;Return Value:
;
; None.
;
;--
cPublicProc _HalInitializeProcessor ,1
;
; Initialize PcIDR in PCR to enable slave IRQ
;
mov fs:PcIDR, 0fffffffbh
mov dword ptr fs:PcStallScaleFactor, INITIAL_STALL_COUNT
mov eax, dword ptr [esp+4]
lock bts _HalpDefaultInterruptAffinity, eax
lock bts _HalpActiveProcessors, eax
stdRET _HalInitializeProcessor
stdENDP _HalInitializeProcessor
INIT ends
_TEXT$03 SEGMENT DWORD PUBLIC 'CODE'
ASSUME DS:FLAT, ES:FLAT, SS:NOTHING, FS:NOTHING, GS:NOTHING
;++
;
; VOID
; HalRequestIpi(
; IN ULONG Mask
; );
;
;Routine Description:
;
; Requests an interprocessor interrupt
;
;Arguments:
;
; Mask - Supplies a mask of the processors to interrupt
;
;Return Value:
;
; None.
;
;--
cPublicProc _HalRequestIpi ,1
if DBG
int 3
endif
stdRET _HalRequestIpi
stdENDP _HalRequestIpi
page ,132
subttl "80387 Irq13 Interrupt Handler"
;++
;
; VOID
; HalpIrq13Handler (
; );
;
; Routine Description:
;
; When the 80387 detects an error, it raises its error line. This
; was supposed to be routed directly to the 386 to cause a trap 16
; (which would actually occur when the 386 encountered the next FP
; instruction).
;
; However, the ISA design routes the error line to IRQ13 on the
; slave 8259. So an interrupt will be generated whenever the 387
; discovers an error.
;
; This routine handles that interrupt and passes control to the kernel
; coprocessor error handler.
;
; Arguments:
;
; None.
; Interrupt is disabled.
;
; Return Value:
;
; None.
;
;--
ENTER_DR_ASSIST Hi13_a, Hi13_t
cPublicProc _HalpIrq13Handler ,0
;
; Save machine state in trap frame
;
ENTER_INTERRUPT Hi13_a, Hi13_t ; (ebp) -> Trap frame
;
; Save previous IRQL
;
push 13 + PRIMARY_VECTOR_BASE ; Vector
sub esp, 4 ; make space for OldIrql
stdCall _HalBeginSystemInterrupt, <I386_80387_IRQL,13 + PRIMARY_VECTOR_BASE,esp>
stdCall _KiCoprocessorError ; call CoprocessorError handler
;
; Clear the busy latch so that the 386 doesn't mistakenly think
; that the 387 is still busy.
;
xor al,al
out I386_80387_BUSY_PORT, al
INTERRUPT_EXIT ; will return to caller
stdENDP _HalpIrq13Handler
_TEXT$03 ENDS
END
|
