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@orbita.don.sitek.net>
   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/ide.h>
  20 #include <linux/init.h>
  21
  22 #include <linux/pnp.h>
  23
  24 #define GENERIC_HD_DATA         0
  25 #define GENERIC_HD_ERROR        1
  26 #define GENERIC_HD_NSECTOR      2
  27 #define GENERIC_HD_SECTOR       3
  28 #define GENERIC_HD_LCYL         4
  29 #define GENERIC_HD_HCYL         5
  30 #define GENERIC_HD_SELECT       6
  31 #define GENERIC_HD_STATUS       7
  32
  33 static int generic_ide_offsets[IDE_NR_PORTS] = {
  34         GENERIC_HD_DATA, GENERIC_HD_ERROR, GENERIC_HD_NSECTOR,
  35         GENERIC_HD_SECTOR, GENERIC_HD_LCYL, GENERIC_HD_HCYL,
  36         GENERIC_HD_SELECT, GENERIC_HD_STATUS, -1, -1
  37 };
  38
  39 /* Add your devices here :)) */
  40 struct pnp_device_id idepnp_devices[] = {
  41         /* Generic ESDI/IDE/ATA compatible hard disk controller */
  42         {.id = "PNP0600", .driver_data = 0},
  43         {.id = ""}
  44 };
  45
  46 static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
  47 {
  48         hw_regs_t hw;
  49         ide_hwif_t *hwif;
  50         int index;
  51
  52         if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
  53                 return -1;
  54
  55         ide_setup_ports(&hw, (unsigned long) pnp_port_start(dev, 0),
  56                         generic_ide_offsets,
  57                         (unsigned long) pnp_port_start(dev, 1),
  58                         0, NULL,
  59 //                      generic_pnp_ide_iops,
  60                         pnp_irq(dev, 0));
  61
  62         index = ide_register_hw(&hw, &hwif);
  63
  64         if (index != -1) {
  65                 printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
  66                 pnp_set_drvdata(dev,hwif);
  67                 hwif->pnp_dev = dev;
  68                 return 0;
  69         }
  70
  71         return -1;
  72 }
  73
  74 static void idepnp_remove(struct pnp_dev * dev)
  75 {
  76         ide_hwif_t *hwif = pnp_get_drvdata(dev);
  77         if (hwif) {
  78                 ide_unregister(hwif->index);
  79         } else
  80                 printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
  81 }
  82
  83 static struct pnp_driver idepnp_driver = {
  84         .name           = "ide",
  85         .id_table       = idepnp_devices,
  86         .probe          = idepnp_probe,
  87         .remove         = idepnp_remove,
  88 };
  89
  90
  91 void pnpide_init(int enable)
  92 {
  93         if(enable)
  94                 pnp_register_driver(&idepnp_driver);
  95         else
  96                 pnp_unregister_driver(&idepnp_driver);
  97 }