drivers/ide/arm/ide_arm.c

   1 /*
   2  * ARM default IDE host driver
   3  *
   4  * Copyright (C) 2004 Bartlomiej Zolnierkiewicz
   5  * Based on code by: Russell King, Ian Molton and Alexander Schulz.
   6  *
   7  * May be copied or modified under the terms of the GNU General Public License.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/init.h>
  12 #include <linux/ide.h>
  13
  14 #include <asm/mach-types.h>
  15 #include <asm/irq.h>
  16
  17 #define DRV_NAME "ide_arm"
  18
  19 #ifdef CONFIG_ARCH_CLPS7500
  20 # include <asm/arch/hardware.h>
  21 #
  22 # define IDE_ARM_IO     (ISASLOT_IO + 0x1f0)
  23 # define IDE_ARM_IRQ    IRQ_ISA_14
  24 #else
  25 # define IDE_ARM_IO     0x1f0
  26 # define IDE_ARM_IRQ    IRQ_HARDDISK
  27 #endif
  28
  29 static int __init ide_arm_init(void)
  30 {
  31         ide_hwif_t *hwif;
  32         hw_regs_t hw;
  33         unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
  34         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  35
  36         if (!request_region(base, 8, DRV_NAME)) {
  37                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
  38                                 DRV_NAME, base, base + 7);
  39                 return -EBUSY;
  40         }
  41
  42         if (!request_region(ctl, 1, DRV_NAME)) {
  43                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
  44                                 DRV_NAME, ctl);
  45                 release_region(base, 8);
  46                 return -EBUSY;
  47         }
  48
  49         memset(&hw, 0, sizeof(hw));
  50         ide_std_init_ports(&hw, base, ctl);
  51         hw.irq = IDE_ARM_IRQ;
  52
  53         hwif = ide_find_port();
  54         if (hwif) {
  55                 ide_init_port_hw(hwif, &hw);
  56                 hwif->mmio = 1;
  57                 idx[0] = hwif->index;
  58
  59                 ide_device_add(idx, NULL);
  60         }
  61
  62         return 0;
  63 }
  64
  65 module_init(ide_arm_init);
  66
  67 MODULE_LICENSE("GPL");