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irq.c

/*
 * 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 */
      ctrl_outw(0, BCR_ILCRA);
      ctrl_outw(0, BCR_ILCRB);
      ctrl_outw(0, BCR_ILCRC);
      ctrl_outw(0, BCR_ILCRD);
      ctrl_outw(0, BCR_ILCRE);
      ctrl_outw(0, BCR_ILCRF);
      ctrl_outw(0, BCR_ILCRG);

      register_ipr_controller(&ipr_irq_desc);
}

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