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/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
 * which needs to alter them. */

static inline void smpboot_clear_io_apic_irqs(void)
{
        io_apic_irqs = 0;
}

static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
{
        /* reset code is stored in 8255 on PC-9800. */
        outb(0x0e, 0x37);       /* SHUT0 = 0 */
        local_flush_tlb();
        Dprintk("1.\n");
        *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
        Dprintk("2.\n");
        *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
        Dprintk("3.\n");
        /*
         * On PC-9800, continuation on warm reset is done by loading
         * %ss:%sp from 0x0000:0404 and executing 'lret', so:
         */
        /* 0x3f0 is on unused interrupt vector and should be safe... */
        *((volatile unsigned long *) phys_to_virt(0x404)) = 0x000003f0;
        Dprintk("4.\n");
}

static inline void smpboot_restore_warm_reset_vector(void)
{
        /*
         * Install writable page 0 entry to set BIOS data area.
         */
        local_flush_tlb();

        /*
         * Paranoid:  Set warm reset code and vector here back
         * to default values.
         */
        outb(0x0f, 0x37);       /* SHUT0 = 1 */

        *((volatile long *) phys_to_virt(0x404)) = 0;
}

static inline void smpboot_setup_io_apic(void)
{
        /*
         * Here we can be sure that there is an IO-APIC in the system. Let's
         * go and set it up:
         */
        if (!skip_ioapic_setup && nr_ioapics)
                setup_IO_APIC();
}