drivers/ide/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/irq.h>
  15
  16 #define DRV_NAME "ide_arm"
  17
  18 #ifdef CONFIG_ARCH_CLPS7500
  19 # include <mach/hardware.h>
  20 #
  21 # define IDE_ARM_IO     (ISASLOT_IO + 0x1f0)
  22 # define IDE_ARM_IRQ    IRQ_ISA_14
  23 #else
  24 # define IDE_ARM_IO     0x1f0
  25 # define IDE_ARM_IRQ    IRQ_HARDDISK
  26 #endif
  27
  28 static int __init ide_arm_init(void)
  29 {
  30         unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
  31         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
  32
  33         if (!request_region(base, 8, DRV_NAME)) {
  34                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
  35                                 DRV_NAME, base, base + 7);
  36                 return -EBUSY;
  37         }
  38
  39         if (!request_region(ctl, 1, DRV_NAME)) {
  40                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
  41                                 DRV_NAME, ctl);
  42                 release_region(base, 8);
  43                 return -EBUSY;
  44         }
  45
  46         memset(&hw, 0, sizeof(hw));
  47         ide_std_init_ports(&hw, base, ctl);
  48         hw.irq = IDE_ARM_IRQ;
  49         hw.chipset = ide_generic;
  50
  51         return ide_host_add(NULL, hws, NULL);
  52 }
  53
  54 module_init(ide_arm_init);
  55
  56 MODULE_LICENSE("GPL");