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i82093reg.h revision 1.8.40.1 
      1 /*	 $NetBSD: i82093reg.h,v 1.8.40.1 2017/12/03 11:36:18 jdolecek Exp $ */
      2 
      3 #include <x86/i82093reg.h>
      4 
      5 #ifdef _KERNEL
      6 
      7 #if defined(_KERNEL_OPT)
      8 #include "opt_multiprocessor.h"
      9 #endif
     10 
     11 #define ioapic_asm_ack(num) \
     12 	movl	_C_LABEL(local_apic_va),%eax	; \
     13 	movl	$0,LAPIC_EOI(%eax)
     14 
     15 #define x2apic_asm_ack(num) \
     16 	movl	$(MSR_X2APIC_BASE + MSR_X2APIC_EOI),%ecx ; \
     17 	xorl	%eax,%eax			; \
     18 	xorl	%edx,%edx			; \
     19 	wrmsr
     20 
     21 #ifdef MULTIPROCESSOR
     22 
     23 #define ioapic_asm_lock(num) \
     24 	movl	$1,%esi						;\
     25 77:								\
     26 	xchgl	%esi,PIC_LOCK(%edi)				;\
     27 	testl	%esi,%esi					;\
     28 	jne	77b
     29 
     30 #define ioapic_asm_unlock(num) \
     31 	movl	$0,PIC_LOCK(%edi)
     32 
     33 #else
     34 
     35 #define ioapic_asm_lock(num)
     36 #define ioapic_asm_unlock(num)
     37 
     38 #endif	/* MULTIPROCESSOR */
     39 
     40 #define ioapic_mask(num) \
     41 	movl	IS_PIC(%ebp),%edi				;\
     42 	ioapic_asm_lock(num)					;\
     43 	movl	IS_PIN(%ebp),%esi				;\
     44 	leal	0x10(%esi,%esi,1),%esi				;\
     45 	movl	PIC_IOAPIC(%edi),%edi				;\
     46 	movl	IOAPIC_SC_REG(%edi),%ebx			;\
     47 	movl	%esi, (%ebx)					;\
     48 	movl	IOAPIC_SC_DATA(%edi),%ebx			;\
     49 	movl	(%ebx),%esi					;\
     50 	orl	$IOAPIC_REDLO_MASK,%esi				;\
     51 	andl	$~IOAPIC_REDLO_RIRR,%esi			;\
     52 	movl	%esi,(%ebx)					;\
     53 	movl	IS_PIC(%ebp),%edi				;\
     54 	ioapic_asm_unlock(num)
     55 
     56 /*
     57  * Since this is called just before the interrupt stub exits, AND
     58  * because the apic ACK doesn't use any registers, all registers
     59  * can be used here.
     60  * XXX this is not obvious
     61  */
     62 #define ioapic_unmask(num) \
     63 	movl    (%esp),%eax					;\
     64 	cmpl    $IREENT_MAGIC,(TF_ERR+4)(%eax)			;\
     65 	jne     79f						;\
     66 	movl	IS_PIC(%ebp),%edi				;\
     67 	ioapic_asm_lock(num)					;\
     68 	movl	IS_PIN(%ebp),%esi				;\
     69 	leal	0x10(%esi,%esi,1),%esi				;\
     70 	movl	PIC_IOAPIC(%edi),%edi				;\
     71 	movl	IOAPIC_SC_REG(%edi),%ebx			;\
     72 	movl	IOAPIC_SC_DATA(%edi),%eax			;\
     73 	movl	%esi, (%ebx)					;\
     74 	movl	(%eax),%edx					;\
     75 	andl	$~(IOAPIC_REDLO_MASK|IOAPIC_REDLO_RIRR),%edx	;\
     76 	movl	%esi, (%ebx)					;\
     77 	movl	%edx,(%eax)					;\
     78 	movl	IS_PIC(%ebp),%edi				;\
     79 	ioapic_asm_unlock(num)					;\
     80 79:
     81 
     82 #endif
     83