drivers/ide/ide-pnp.c

   1 /*
   2  * linux/drivers/ide/ide-pnp.c
   3  *
   4  * This file provides autodetection for ISA PnP IDE interfaces.
   5  * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
   6  *
   7  * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2, or (at your option)
  12  * any later version.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * (for example /usr/src/linux/COPYING); if not, write to the Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/pnp.h>
  21 #include <linux/ide.h>
  22
  23 /* Add your devices here :)) */
  24 static struct pnp_device_id idepnp_devices[] = {
  25         /* Generic ESDI/IDE/ATA compatible hard disk controller */
  26         {.id = "PNP0600", .driver_data = 0},
  27         {.id = ""}
  28 };
  29
  30 static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
  31 {
  32         hw_regs_t hw;
  33         ide_hwif_t *hwif;
  34
  35         if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
  36                 return -1;
  37
  38         memset(&hw, 0, sizeof(hw));
  39         ide_std_init_ports(&hw, pnp_port_start(dev, 0),
  40                                 pnp_port_start(dev, 1));
  41         hw.irq = pnp_irq(dev, 0);
  42
  43         hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
  44         if (hwif) {
  45                 u8 index = hwif->index;
  46
  47                 ide_init_port_data(hwif, index);
  48                 ide_init_port_hw(hwif, &hw);
  49
  50                 printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
  51                 pnp_set_drvdata(dev,hwif);
  52                 return 0;
  53         }
  54
  55         return -1;
  56 }
  57
  58 static void idepnp_remove(struct pnp_dev * dev)
  59 {
  60         ide_hwif_t *hwif = pnp_get_drvdata(dev);
  61         if (hwif) {
  62                 ide_unregister(hwif->index);
  63         } else
  64                 printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
  65 }
  66
  67 static struct pnp_driver idepnp_driver = {
  68         .name           = "ide",
  69         .id_table       = idepnp_devices,
  70         .probe          = idepnp_probe,
  71         .remove         = idepnp_remove,
  72 };
  73
  74 void __init pnpide_init(void)
  75 {
  76         pnp_register_driver(&idepnp_driver);
  77 }
  78
  79 void __exit pnpide_exit(void)
  80 {
  81         pnp_unregister_driver(&idepnp_driver);
  82 }