irq.c

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/*
 * 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);
}