/*       $NetBSD: i82093reg.h,v 1.11 2017/11/13 11:45:54 nakayama Exp $ */

#include <x86/i82093reg.h>

#ifdef _KERNEL

#if defined(_KERNEL_OPT)
#include "opt_multiprocessor.h"
#endif

#define ioapic_asm_ack(num) \
        movl    _C_LABEL(local_apic_va),%eax    ; \
        movl    $0,LAPIC_EOI(%eax)

#define x2apic_asm_ack(num) \
        movl    $(MSR_X2APIC_BASE + MSR_X2APIC_EOI),%ecx ; \
        xorl    %eax,%eax                       ; \
        xorl    %edx,%edx                       ; \
        wrmsr

#ifdef MULTIPROCESSOR

#define ioapic_asm_lock(num) \
        movl    $1,%esi                                         ;\
77:                                                             \
        xchgl   %esi,PIC_LOCK(%edi)                             ;\
        testl   %esi,%esi                                       ;\
        jne     77b

#define ioapic_asm_unlock(num) \
        movl    $0,PIC_LOCK(%edi)
        
#else

#define ioapic_asm_lock(num)
#define ioapic_asm_unlock(num)

#endif  /* MULTIPROCESSOR */

#define ioapic_mask(num) \
        movl    IS_PIC(%ebp),%edi                               ;\
        ioapic_asm_lock(num)                                    ;\
        movl    IS_PIN(%ebp),%esi                               ;\
        leal    0x10(%esi,%esi,1),%esi                          ;\
        movl    PIC_IOAPIC(%edi),%edi                           ;\
        movl    IOAPIC_SC_REG(%edi),%ebx                        ;\
        movl    %esi, (%ebx)                                    ;\
        movl    IOAPIC_SC_DATA(%edi),%ebx                       ;\
        movl    (%ebx),%esi                                     ;\
        orl     $IOAPIC_REDLO_MASK,%esi                         ;\
        andl    $~IOAPIC_REDLO_RIRR,%esi                        ;\
        movl    %esi,(%ebx)                                     ;\
        movl    IS_PIC(%ebp),%edi                               ;\
        ioapic_asm_unlock(num)

/*
 * Since this is called just before the interrupt stub exits, AND
 * because the apic ACK doesn't use any registers, all registers
 * can be used here.
 * XXX this is not obvious
 */
#define ioapic_unmask(num) \
        movl    (%esp),%eax                                     ;\
        cmpl    $IREENT_MAGIC,(TF_ERR+4)(%eax)                  ;\
        jne     79f                                             ;\
        movl    IS_PIC(%ebp),%edi                               ;\
        ioapic_asm_lock(num)                                    ;\
        movl    IS_PIN(%ebp),%esi                               ;\
        leal    0x10(%esi,%esi,1),%esi                          ;\
        movl    PIC_IOAPIC(%edi),%edi                           ;\
        movl    IOAPIC_SC_REG(%edi),%ebx                        ;\
        movl    IOAPIC_SC_DATA(%edi),%eax                       ;\
        movl    %esi, (%ebx)                                    ;\
        movl    (%eax),%edx                                     ;\
        andl    $~(IOAPIC_REDLO_MASK|IOAPIC_REDLO_RIRR),%edx    ;\
        movl    %esi, (%ebx)                                    ;\
        movl    %edx,(%eax)                                     ;\
        movl    IS_PIC(%ebp),%edi                               ;\
        ioapic_asm_unlock(num)                                  ;\
79:

#endif