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 #define DRV_NAME "bast-ide"
  25
  26 static int __init bastide_register(unsigned int base, unsigned int aux, int irq)
  27 {
  28         ide_hwif_t *hwif;
  29         hw_regs_t hw;
  30         int i;
  31         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  32
  33         memset(&hw, 0, sizeof(hw));
  34
  35         base += BAST_IDE_CS;
  36         aux  += BAST_IDE_CS;
  37
  38         for (i = 0; i <= 7; i++) {
  39                 hw.io_ports_array[i] = (unsigned long)base;
  40                 base += 0x20;
  41         }
  42
  43         hw.io_ports.ctl_addr = aux + (6 * 0x20);
  44         hw.irq = irq;
  45         hw.chipset = ide_generic;
  46
  47         hwif = ide_find_port();
  48         if (hwif == NULL)
  49                 goto out;
  50
  51         i = hwif->index;
  52
  53         ide_init_port_data(hwif, i);
  54         ide_init_port_hw(hwif, &hw);
  55         hwif->port_ops = NULL;
  56
  57         idx[0] = i;
  58
  59         ide_device_add(idx, NULL);
  60 out:
  61         return 0;
  62 }
  63
  64 static int __init bastide_init(void)
  65 {
  66         unsigned long base = BAST_VA_IDEPRI + BAST_IDE_CS;
  67
  68         /* we can treat the VR1000 and the BAST the same */
  69
  70         if (!(machine_is_bast() || machine_is_vr1000()))
  71                 return 0;
  72
  73         printk("BAST: IDE driver, (c) 2003-2004 Simtec Electronics\n");
  74
  75         if (!request_mem_region(base, 0x400000, DRV_NAME)) {
  76                 printk(KERN_ERR "%s: resources busy\n", DRV_NAME);
  77                 return -EBUSY;
  78         }
  79
  80         bastide_register(BAST_VA_IDEPRI, BAST_VA_IDEPRIAUX, IRQ_IDE0);
  81         bastide_register(BAST_VA_IDESEC, BAST_VA_IDESECAUX, IRQ_IDE1);
  82
  83         return 0;
  84 }
  85
  86 module_init(bastide_init);
  87
  88 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
  89 MODULE_LICENSE("GPL");
  90 MODULE_DESCRIPTION("Simtec BAST / Thorcom VR1000 IDE driver");