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 static int __init bastide_register(unsigned int base, unsigned int aux, int irq)
  25 {
  26         ide_hwif_t *hwif;
  27         hw_regs_t hw;
  28         int i;
  29         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  30
  31         memset(&hw, 0, sizeof(hw));
  32
  33         base += BAST_IDE_CS;
  34         aux  += BAST_IDE_CS;
  35
  36         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  37                 hw.io_ports[i] = (unsigned long)base;
  38                 base += 0x20;
  39         }
  40
  41         hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
  42         hw.irq = irq;
  43
  44         hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
  45         if (hwif == NULL)
  46                 goto out;
  47
  48         i = hwif->index;
  49
  50         if (hwif->present)
  51                 ide_unregister(i);
  52         else
  53                 ide_init_port_data(hwif, i);
  54
  55         ide_init_port_hw(hwif, &hw);
  56         hwif->quirkproc = NULL;
  57
  58         idx[0] = i;
  59
  60         ide_device_add(idx, NULL);
  61 out:
  62         return 0;
  63 }
  64
  65 static int __init bastide_init(void)
  66 {
  67         /* we can treat the VR1000 and the BAST the same */
  68
  69         if (!(machine_is_bast() || machine_is_vr1000()))
  70                 return 0;
  71
  72         printk("BAST: IDE driver, (c) 2003-2004 Simtec Electronics\n");
  73
  74         bastide_register(BAST_VA_IDEPRI, BAST_VA_IDEPRIAUX, IRQ_IDE0);
  75         bastide_register(BAST_VA_IDESEC, BAST_VA_IDESECAUX, IRQ_IDE1);
  76
  77         return 0;
  78 }
  79
  80 module_init(bastide_init);
  81
  82 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
  83 MODULE_LICENSE("GPL");
  84 MODULE_DESCRIPTION("Simtec BAST / Thorcom VR1000 IDE driver");