// SPDX-License-Identifier: GPL-2.0
/*
 * linux/arch/sh/boards/se/770x/irq.c
 *
 * Copyright (C) 2000  Kazumoto Kojima
 * Copyright (C) 2006  Nobuhiro Iwamatsu
 *
 * Hitachi SolutionEngine Support.
 *
 */

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <mach-se/mach/se.h>

static struct ipr_data ipr_irq_table[] = {
        /*
        * Super I/O (Just mimic PC):
        *  1: keyboard
        *  3: serial 0
        *  4: serial 1
        *  5: printer
        *  6: floppy
        *  8: rtc
        * 12: mouse
        * 14: ide0
        */
#if defined(CONFIG_CPU_SUBTYPE_SH7705)
        /* This is default value */
        { 13, 0, 8,  0x0f-13, },
        { 5 , 0, 4,  0x0f- 5, },
        { 10, 1, 0,  0x0f-10, },
        { 7 , 2, 4,  0x0f- 7, },
        { 3 , 2, 0,  0x0f- 3, },
        { 1 , 3, 12, 0x0f- 1, },
        { 12, 3, 4,  0x0f-12, }, /* LAN */
        { 2 , 4, 8,  0x0f- 2, }, /* PCIRQ2 */
        { 6 , 4, 4,  0x0f- 6, }, /* PCIRQ1 */
        { 14, 4, 0,  0x0f-14, }, /* PCIRQ0 */
        { 0 , 5, 12, 0x0f   , }, 
        { 4 , 5, 4,  0x0f- 4, },
        { 8 , 6, 12, 0x0f- 8, },
        { 9 , 6, 8,  0x0f- 9, },
        { 11, 6, 4,  0x0f-11, },
#else
        { 14, 0,  8, 0x0f-14, },
        { 12, 0,  4, 0x0f-12, },
        {  8, 1,  4, 0x0f- 8, },
        {  6, 2, 12, 0x0f- 6, },
        {  5, 2,  8, 0x0f- 5, },
        {  4, 2,  4, 0x0f- 4, },
        {  3, 2,  0, 0x0f- 3, },
        {  1, 3, 12, 0x0f- 1, },
#if defined(CONFIG_STNIC)
        /* ST NIC */
        { 10, 3,  4, 0x0f-10, },        /* LAN */
#endif
        /* MRSHPC IRQs setting */
        {  0, 4, 12, 0x0f- 0, },        /* PCIRQ3 */
        { 11, 4,  8, 0x0f-11, },        /* PCIRQ2 */
        {  9, 4,  4, 0x0f- 9, },        /* PCIRQ1 */
        {  7, 4,  0, 0x0f- 7, },        /* PCIRQ0 */
        /* #2, #13 are allocated for SLOT IRQ #1 and #2 (for now) */
        /* NOTE: #2 and #13 are not used on PC */
        { 13, 6,  4, 0x0f-13, },        /* SLOTIRQ2 */
        {  2, 6,  0, 0x0f- 2, },        /* SLOTIRQ1 */
#endif
};

static unsigned long ipr_offsets[] = {
        BCR_ILCRA,
        BCR_ILCRB,
        BCR_ILCRC,
        BCR_ILCRD,
        BCR_ILCRE,
        BCR_ILCRF,
        BCR_ILCRG,
};

static struct ipr_desc ipr_irq_desc = {
        .ipr_offsets    = ipr_offsets,
        .nr_offsets     = ARRAY_SIZE(ipr_offsets),

        .ipr_data       = ipr_irq_table,
        .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
        .chip = {
                .name   = "IPR-se770x",
        },
};

/*
 * Initialize IRQ setting
 */
void __init init_se_IRQ(void)
{
        /* Disable all interrupts */
        __raw_writew(0, BCR_ILCRA);
        __raw_writew(0, BCR_ILCRB);
        __raw_writew(0, BCR_ILCRC);
        __raw_writew(0, BCR_ILCRD);
        __raw_writew(0, BCR_ILCRE);
        __raw_writew(0, BCR_ILCRF);
        __raw_writew(0, BCR_ILCRG);

        register_ipr_controller(&ipr_irq_desc);
}