ide-pnp.c 2.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * This file provides autodetection for ISA PnP IDE interfaces.
  4. * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
  5. *
  6. * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
  7. */
  8. #include <linux/init.h>
  9. #include <linux/pnp.h>
  10. #include <linux/ide.h>
  11. #include <linux/module.h>
  12. #define DRV_NAME "ide-pnp"
  13. /* Add your devices here :)) */
  14. static const struct pnp_device_id idepnp_devices[] = {
  15. /* Generic ESDI/IDE/ATA compatible hard disk controller */
  16. {.id = "PNP0600", .driver_data = 0},
  17. {.id = ""}
  18. };
  19. static const struct ide_port_info ide_pnp_port_info = {
  20. .host_flags = IDE_HFLAG_NO_DMA,
  21. .chipset = ide_generic,
  22. };
  23. static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
  24. {
  25. struct ide_host *host;
  26. unsigned long base, ctl;
  27. int rc;
  28. struct ide_hw hw, *hws[] = { &hw };
  29. printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
  30. if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
  31. return -1;
  32. base = pnp_port_start(dev, 0);
  33. ctl = pnp_port_start(dev, 1);
  34. if (!request_region(base, 8, DRV_NAME)) {
  35. printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
  36. DRV_NAME, base, base + 7);
  37. return -EBUSY;
  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. memset(&hw, 0, sizeof(hw));
  46. ide_std_init_ports(&hw, base, ctl);
  47. hw.irq = pnp_irq(dev, 0);
  48. rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
  49. if (rc)
  50. goto out;
  51. pnp_set_drvdata(dev, host);
  52. return 0;
  53. out:
  54. release_region(ctl, 1);
  55. release_region(base, 8);
  56. return rc;
  57. }
  58. static void idepnp_remove(struct pnp_dev *dev)
  59. {
  60. struct ide_host *host = pnp_get_drvdata(dev);
  61. ide_host_remove(host);
  62. release_region(pnp_port_start(dev, 1), 1);
  63. release_region(pnp_port_start(dev, 0), 8);
  64. }
  65. static struct pnp_driver idepnp_driver = {
  66. .name = "ide",
  67. .id_table = idepnp_devices,
  68. .probe = idepnp_probe,
  69. .remove = idepnp_remove,
  70. };
  71. module_pnp_driver(idepnp_driver);
  72. MODULE_LICENSE("GPL");