| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file provides autodetection for ISA PnP IDE interfaces. |
| 3 | * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface. |
| 4 | * |
| 5 | * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * (for example /usr/src/linux/COPYING); if not, write to the Free |
| 14 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/pnp.h> |
| 19 | #include <linux/ide.h> |
| 20 | #include <linux/module.h> |
| 21 | |
| 22 | #define DRV_NAME "ide-pnp" |
| 23 | |
| 24 | /* Add your devices here :)) */ |
| 25 | static struct pnp_device_id idepnp_devices[] = { |
| 26 | /* Generic ESDI/IDE/ATA compatible hard disk controller */ |
| 27 | {.id = "PNP0600", .driver_data = 0}, |
| 28 | {.id = ""} |
| 29 | }; |
| 30 | |
| 31 | static const struct ide_port_info ide_pnp_port_info = { |
| 32 | .host_flags = IDE_HFLAG_NO_DMA, |
| 33 | .chipset = ide_generic, |
| 34 | }; |
| 35 | |
| 36 | static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) |
| 37 | { |
| 38 | struct ide_host *host; |
| 39 | unsigned long base, ctl; |
| 40 | int rc; |
| 41 | struct ide_hw hw, *hws[] = { &hw }; |
| 42 | |
| 43 | printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n"); |
| 44 | |
| 45 | if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0))) |
| 46 | return -1; |
| 47 | |
| 48 | base = pnp_port_start(dev, 0); |
| 49 | ctl = pnp_port_start(dev, 1); |
| 50 | |
| 51 | if (!request_region(base, 8, DRV_NAME)) { |
| 52 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", |
| 53 | DRV_NAME, base, base + 7); |
| 54 | return -EBUSY; |
| 55 | } |
| 56 | |
| 57 | if (!request_region(ctl, 1, DRV_NAME)) { |
| 58 | printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", |
| 59 | DRV_NAME, ctl); |
| 60 | release_region(base, 8); |
| 61 | return -EBUSY; |
| 62 | } |
| 63 | |
| 64 | memset(&hw, 0, sizeof(hw)); |
| 65 | ide_std_init_ports(&hw, base, ctl); |
| 66 | hw.irq = pnp_irq(dev, 0); |
| 67 | |
| 68 | rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host); |
| 69 | if (rc) |
| 70 | goto out; |
| 71 | |
| 72 | pnp_set_drvdata(dev, host); |
| 73 | |
| 74 | return 0; |
| 75 | out: |
| 76 | release_region(ctl, 1); |
| 77 | release_region(base, 8); |
| 78 | |
| 79 | return rc; |
| 80 | } |
| 81 | |
| 82 | static void idepnp_remove(struct pnp_dev *dev) |
| 83 | { |
| 84 | struct ide_host *host = pnp_get_drvdata(dev); |
| 85 | |
| 86 | ide_host_remove(host); |
| 87 | |
| 88 | release_region(pnp_port_start(dev, 1), 1); |
| 89 | release_region(pnp_port_start(dev, 0), 8); |
| 90 | } |
| 91 | |
| 92 | static struct pnp_driver idepnp_driver = { |
| 93 | .name = "ide", |
| 94 | .id_table = idepnp_devices, |
| 95 | .probe = idepnp_probe, |
| 96 | .remove = idepnp_remove, |
| 97 | }; |
| 98 | |
| 99 | static int __init pnpide_init(void) |
| 100 | { |
| 101 | return pnp_register_driver(&idepnp_driver); |
| 102 | } |
| 103 | |
| 104 | static void __exit pnpide_exit(void) |
| 105 | { |
| 106 | pnp_unregister_driver(&idepnp_driver); |
| 107 | } |
| 108 | |
| 109 | module_init(pnpide_init); |
| 110 | module_exit(pnpide_exit); |
| 111 | |
| 112 | MODULE_LICENSE("GPL"); |