arch/sh/boards/mach-se/770x/irq.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/sh/boards/se/770x/irq.c
   4  *
   5  * Copyright (C) 2000  Kazumoto Kojima
   6  * Copyright (C) 2006  Nobuhiro Iwamatsu
   7  *
   8  * Hitachi SolutionEngine Support.
   9  *
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/irq.h>
  15 #include <asm/irq.h>
  16 #include <asm/io.h>
  17 #include <mach-se/mach/se.h>
  18
  19 static struct ipr_data ipr_irq_table[] = {
  20         /*
  21         * Super I/O (Just mimic PC):
  22         *  1: keyboard
  23         *  3: serial 0
  24         *  4: serial 1
  25         *  5: printer
  26         *  6: floppy
  27         *  8: rtc
  28         * 12: mouse
  29         * 14: ide0
  30         */
  31 #if defined(CONFIG_CPU_SUBTYPE_SH7705)
  32         /* This is default value */
  33         { 13, 0, 8,  0x0f-13, },
  34         { 5 , 0, 4,  0x0f- 5, },
  35         { 10, 1, 0,  0x0f-10, },
  36         { 7 , 2, 4,  0x0f- 7, },
  37         { 3 , 2, 0,  0x0f- 3, },
  38         { 1 , 3, 12, 0x0f- 1, },
  39         { 12, 3, 4,  0x0f-12, }, /* LAN */
  40         { 2 , 4, 8,  0x0f- 2, }, /* PCIRQ2 */
  41         { 6 , 4, 4,  0x0f- 6, }, /* PCIRQ1 */
  42         { 14, 4, 0,  0x0f-14, }, /* PCIRQ0 */
  43         { 0 , 5, 12, 0x0f   , },
  44         { 4 , 5, 4,  0x0f- 4, },
  45         { 8 , 6, 12, 0x0f- 8, },
  46         { 9 , 6, 8,  0x0f- 9, },
  47         { 11, 6, 4,  0x0f-11, },
  48 #else
  49         { 14, 0,  8, 0x0f-14, },
  50         { 12, 0,  4, 0x0f-12, },
  51         {  8, 1,  4, 0x0f- 8, },
  52         {  6, 2, 12, 0x0f- 6, },
  53         {  5, 2,  8, 0x0f- 5, },
  54         {  4, 2,  4, 0x0f- 4, },
  55         {  3, 2,  0, 0x0f- 3, },
  56         {  1, 3, 12, 0x0f- 1, },
  57 #if defined(CONFIG_STNIC)
  58         /* ST NIC */
  59         { 10, 3,  4, 0x0f-10, },        /* LAN */
  60 #endif
  61         /* MRSHPC IRQs setting */
  62         {  0, 4, 12, 0x0f- 0, },        /* PCIRQ3 */
  63         { 11, 4,  8, 0x0f-11, },        /* PCIRQ2 */
  64         {  9, 4,  4, 0x0f- 9, },        /* PCIRQ1 */
  65         {  7, 4,  0, 0x0f- 7, },        /* PCIRQ0 */
  66         /* #2, #13 are allocated for SLOT IRQ #1 and #2 (for now) */
  67         /* NOTE: #2 and #13 are not used on PC */
  68         { 13, 6,  4, 0x0f-13, },        /* SLOTIRQ2 */
  69         {  2, 6,  0, 0x0f- 2, },        /* SLOTIRQ1 */
  70 #endif
  71 };
  72
  73 static unsigned long ipr_offsets[] = {
  74         BCR_ILCRA,
  75         BCR_ILCRB,
  76         BCR_ILCRC,
  77         BCR_ILCRD,
  78         BCR_ILCRE,
  79         BCR_ILCRF,
  80         BCR_ILCRG,
  81 };
  82
  83 static struct ipr_desc ipr_irq_desc = {
  84         .ipr_offsets    = ipr_offsets,
  85         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
  86
  87         .ipr_data       = ipr_irq_table,
  88         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
  89         .chip = {
  90                 .name   = "IPR-se770x",
  91         },
  92 };
  93
  94 /*
  95  * Initialize IRQ setting
  96  */
  97 void __init init_se_IRQ(void)
  98 {
  99         /* Disable all interrupts */
 100         __raw_writew(0, BCR_ILCRA);
 101         __raw_writew(0, BCR_ILCRB);
 102         __raw_writew(0, BCR_ILCRC);
 103         __raw_writew(0, BCR_ILCRD);
 104         __raw_writew(0, BCR_ILCRE);
 105         __raw_writew(0, BCR_ILCRF);
 106         __raw_writew(0, BCR_ILCRG);
 107
 108         register_ipr_controller(&ipr_irq_desc);
 109 }