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         struct ide_host *host;
  32         unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
  33         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
  34
  35         if (!request_region(base, 8, DRV_NAME)) {
  36                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
  37                                 DRV_NAME, base, base + 7);
  38                 return -EBUSY;
  39         }
  40
  41         if (!request_region(ctl, 1, DRV_NAME)) {
  42                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
  43                                 DRV_NAME, ctl);
  44                 release_region(base, 8);
  45                 return -EBUSY;
  46         }
  47
  48         memset(&hw, 0, sizeof(hw));
  49         ide_std_init_ports(&hw, base, ctl);
  50         hw.irq = IDE_ARM_IRQ;
  51         hw.chipset = ide_generic;
  52
  53         host = ide_host_alloc(NULL, hws);
  54         if (host)
  55                 ide_host_register(host, NULL, hws);
  56
  57         return 0;
  58 }
  59
  60 module_init(ide_arm_init);
  61
  62 MODULE_LICENSE("GPL");