drivers/ide/arm/bast-ide.c

   1 /*
   2  * Copyright (c) 2003-2004 Simtec Electronics
   3  *  Ben Dooks <ben@simtec.co.uk>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9 */
  10
  11 #include <linux/module.h>
  12 #include <linux/errno.h>
  13 #include <linux/ide.h>
  14 #include <linux/init.h>
  15
  16 #include <asm/mach-types.h>
  17
  18 #include <asm/io.h>
  19 #include <asm/irq.h>
  20 #include <asm/arch/map.h>
  21 #include <asm/arch/bast-map.h>
  22 #include <asm/arch/bast-irq.h>
  23
  24 /* list of registered interfaces */
  25 static ide_hwif_t *ifs[2];
  26
  27 static int __init
  28 bastide_register(unsigned int base, unsigned int aux, int irq,
  29                  ide_hwif_t **hwif)
  30 {
  31         ide_hwif_t *hwif;
  32         hw_regs_t hw;
  33         int i;
  34         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  35
  36         memset(&hw, 0, sizeof(hw));
  37
  38         base += BAST_IDE_CS;
  39         aux  += BAST_IDE_CS;
  40
  41         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  42                 hw.io_ports[i] = (unsigned long)base;
  43                 base += 0x20;
  44         }
  45
  46         hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
  47         hw.irq = irq;
  48
  49         hwif = ide_deprecated_find_port(hw.io_ports[IDE_DATA_OFFSET]);
  50         if (hwif == NULL)
  51                 goto out;
  52
  53         i = hwif->index;
  54
  55         if (hwif->present)
  56                 ide_unregister(i, 0, 0);
  57         else if (!hwif->hold)
  58                 ide_init_port_data(hwif, i);
  59
  60         ide_init_port_hw(hwif, &hw);
  61         hwif->quirkproc = NULL;
  62
  63         idx[0] = i;
  64
  65         ide_device_add(idx, NULL);
  66 out:
  67         return 0;
  68 }
  69
  70 static int __init bastide_init(void)
  71 {
  72         /* we can treat the VR1000 and the BAST the same */
  73
  74         if (!(machine_is_bast() || machine_is_vr1000()))
  75                 return 0;
  76
  77         printk("BAST: IDE driver, (c) 2003-2004 Simtec Electronics\n");
  78
  79         bastide_register(BAST_VA_IDEPRI, BAST_VA_IDEPRIAUX, IRQ_IDE0, &ifs[0]);
  80         bastide_register(BAST_VA_IDESEC, BAST_VA_IDESECAUX, IRQ_IDE1, &ifs[1]);
  81         return 0;
  82 }
  83
  84 module_init(bastide_init);
  85
  86 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
  87 MODULE_LICENSE("GPL");
  88 MODULE_DESCRIPTION("Simtec BAST / Thorcom VR1000 IDE driver");