arch/sh/boards/snapgear/setup.c

   1 /*
   2  * linux/arch/sh/boards/snapgear/setup.c
   3  *
   4  * Copyright (C) 2002  David McCullough <davidm@snapgear.com>
   5  * Copyright (C) 2003  Paul Mundt <lethal@linux-sh.org>
   6  *
   7  * Based on files with the following comments:
   8  *
   9  *           Copyright (C) 2000  Kazumoto Kojima
  10  *
  11  *           Modified for 7751 Solution Engine by
  12  *           Ian da Silva and Jeremy Siegel, 2001.
  13  */
  14 #include <linux/init.h>
  15 #include <linux/irq.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/timer.h>
  18 #include <linux/delay.h>
  19 #include <linux/module.h>
  20 #include <linux/sched.h>
  21 #include <asm/machvec.h>
  22 #include <asm/snapgear.h>
  23 #include <asm/irq.h>
  24 #include <asm/io.h>
  25 #include <asm/cpu/timer.h>
  26
  27 /*
  28  * EraseConfig handling functions
  29  */
  30
  31 static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id)
  32 {
  33         (void)ctrl_inb(0xb8000000);     /* dummy read */
  34
  35         printk("SnapGear: erase switch interrupt!\n");
  36
  37         return IRQ_HANDLED;
  38 }
  39
  40 static int __init eraseconfig_init(void)
  41 {
  42         printk("SnapGear: EraseConfig init\n");
  43         /* Setup "EraseConfig" switch on external IRQ 0 */
  44         if (request_irq(IRL0_IRQ, eraseconfig_interrupt, IRQF_DISABLED,
  45                                 "Erase Config", NULL))
  46                 printk("SnapGear: failed to register IRQ%d for Reset witch\n",
  47                                 IRL0_IRQ);
  48         else
  49                 printk("SnapGear: registered EraseConfig switch on IRQ%d\n",
  50                                 IRL0_IRQ);
  51         return(0);
  52 }
  53
  54 module_init(eraseconfig_init);
  55
  56 /****************************************************************************/
  57 /*
  58  * Initialize IRQ setting
  59  *
  60  * IRL0 = erase switch
  61  * IRL1 = eth0
  62  * IRL2 = eth1
  63  * IRL3 = crypto
  64  */
  65
  66 static void __init init_snapgear_IRQ(void)
  67 {
  68         printk("Setup SnapGear IRQ/IPR ...\n");
  69         /* enable individual interrupt mode for externals */
  70         plat_irq_setup_pins(IRQ_MODE_IRQ);
  71 }
  72
  73 /*
  74  * The Machine Vector
  75  */
  76 static struct sh_machine_vector mv_snapgear __initmv = {
  77         .mv_name                = "SnapGear SecureEdge5410",
  78         .mv_nr_irqs             = 72,
  79
  80         .mv_inb                 = snapgear_inb,
  81         .mv_inw                 = snapgear_inw,
  82         .mv_inl                 = snapgear_inl,
  83         .mv_outb                = snapgear_outb,
  84         .mv_outw                = snapgear_outw,
  85         .mv_outl                = snapgear_outl,
  86
  87         .mv_inb_p               = snapgear_inb_p,
  88         .mv_inw_p               = snapgear_inw,
  89         .mv_inl_p               = snapgear_inl,
  90         .mv_outb_p              = snapgear_outb_p,
  91         .mv_outw_p              = snapgear_outw,
  92         .mv_outl_p              = snapgear_outl,
  93
  94         .mv_init_irq            = init_snapgear_IRQ,
  95 };