arch/sh/boards/cqreek/setup.c

   1 /* $Id: setup.c,v 1.5 2003/08/04 01:51:58 lethal Exp $
   2  *
   3  * arch/sh/kernel/setup_cqreek.c
   4  *
   5  * Copyright (C) 2000  Niibe Yutaka
   6  *
   7  * CqREEK IDE/ISA Bridge Support.
   8  *
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/irq.h>
  14
  15 #include <asm/mach/cqreek.h>
  16 #include <asm/machvec.h>
  17 #include <asm/io.h>
  18 #include <asm/io_generic.h>
  19 #include <asm/irq.h>
  20 #include <asm/rtc.h>
  21
  22 #define IDE_OFFSET 0xA4000000UL
  23 #define ISA_OFFSET 0xA4A00000UL
  24
  25 const char *get_system_type(void)
  26 {
  27         return "CqREEK";
  28 }
  29
  30 static unsigned long cqreek_port2addr(unsigned long port)
  31 {
  32         if (0x0000<=port && port<=0x0040)
  33                 return IDE_OFFSET + port;
  34         if ((0x01f0<=port && port<=0x01f7) || port == 0x03f6)
  35                 return IDE_OFFSET + port;
  36
  37         return ISA_OFFSET + port;
  38 }
  39
  40 /*
  41  * The Machine Vector
  42  */
  43 struct sh_machine_vector mv_cqreek __initmv = {
  44 #if defined(CONFIG_CPU_SH4)
  45         .mv_nr_irqs             = 48,
  46 #elif defined(CONFIG_CPU_SUBTYPE_SH7708)
  47         .mv_nr_irqs             = 32,
  48 #elif defined(CONFIG_CPU_SUBTYPE_SH7709)
  49         .mv_nr_irqs             = 61,
  50 #endif
  51
  52         .mv_init_irq            = init_cqreek_IRQ,
  53
  54         .mv_isa_port2addr       = cqreek_port2addr,
  55 };
  56 ALIAS_MV(cqreek)
  57
  58 /*
  59  * Initialize the board
  60  */
  61 void __init platform_setup(void)
  62 {
  63         int i;
  64 /* udelay is not available at setup time yet... */
  65 #define DELAY() do {for (i=0; i<10000; i++) ctrl_inw(0xa0000000);} while(0)
  66
  67         if ((inw (BRIDGE_FEATURE) & 1)) { /* We have IDE interface */
  68                 outw_p(0, BRIDGE_IDE_INTR_LVL);
  69                 outw_p(0, BRIDGE_IDE_INTR_MASK);
  70
  71                 outw_p(0, BRIDGE_IDE_CTRL);
  72                 DELAY();
  73
  74                 outw_p(0x8000, BRIDGE_IDE_CTRL);
  75                 DELAY();
  76
  77                 outw_p(0xffff, BRIDGE_IDE_INTR_STAT); /* Clear interrupt status */
  78                 outw_p(0x0f-14, BRIDGE_IDE_INTR_LVL); /* Use 14 IPR */
  79                 outw_p(1, BRIDGE_IDE_INTR_MASK); /* Enable interrupt */
  80                 cqreek_has_ide=1;
  81         }
  82
  83         if ((inw (BRIDGE_FEATURE) & 2)) { /* We have ISA interface */
  84                 outw_p(0, BRIDGE_ISA_INTR_LVL);
  85                 outw_p(0, BRIDGE_ISA_INTR_MASK);
  86
  87                 outw_p(0, BRIDGE_ISA_CTRL);
  88                 DELAY();
  89                 outw_p(0x8000, BRIDGE_ISA_CTRL);
  90                 DELAY();
  91
  92                 outw_p(0xffff, BRIDGE_ISA_INTR_STAT); /* Clear interrupt status */
  93                 outw_p(0x0f-10, BRIDGE_ISA_INTR_LVL); /* Use 10 IPR */
  94                 outw_p(0xfff8, BRIDGE_ISA_INTR_MASK); /* Enable interrupt */
  95                 cqreek_has_isa=1;
  96         }
  97
  98         printk(KERN_INFO "CqREEK Setup (IDE=%d, ISA=%d)...done\n", cqreek_has_ide, cqreek_has_isa);
  99 }
 100