driver-changes.txt 3.6 KB

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  1. This file details changes in 2.6 which affect PCMCIA card driver authors:
  2. * New release helper (as of 2.6.17)
  3. Instead of calling pcmcia_release_{configuration,io,irq,win}, all that's
  4. necessary now is calling pcmcia_disable_device. As there is no valid
  5. reason left to call pcmcia_release_io and pcmcia_release_irq, the
  6. exports for them were removed.
  7. * Unify detach and REMOVAL event code, as well as attach and INSERTION
  8. code (as of 2.6.16)
  9. void (*remove) (struct pcmcia_device *dev);
  10. int (*probe) (struct pcmcia_device *dev);
  11. * Move suspend, resume and reset out of event handler (as of 2.6.16)
  12. int (*suspend) (struct pcmcia_device *dev);
  13. int (*resume) (struct pcmcia_device *dev);
  14. should be initialized in struct pcmcia_driver, and handle
  15. (SUSPEND == RESET_PHYSICAL) and (RESUME == CARD_RESET) events
  16. * event handler initialization in struct pcmcia_driver (as of 2.6.13)
  17. The event handler is notified of all events, and must be initialized
  18. as the event() callback in the driver's struct pcmcia_driver.
  19. * pcmcia/version.h should not be used (as of 2.6.13)
  20. This file will be removed eventually.
  21. * in-kernel device<->driver matching (as of 2.6.13)
  22. PCMCIA devices and their correct drivers can now be matched in
  23. kernelspace. See 'devicetable.txt' for details.
  24. * Device model integration (as of 2.6.11)
  25. A struct pcmcia_device is registered with the device model core,
  26. and can be used (e.g. for SET_NETDEV_DEV) by using
  27. handle_to_dev(client_handle_t * handle).
  28. * Convert internal I/O port addresses to unsigned long (as of 2.6.11)
  29. ioaddr_t should be replaced by kio_addr_t in PCMCIA card drivers.
  30. * irq_mask and irq_list parameters (as of 2.6.11)
  31. The irq_mask and irq_list parameters should no longer be used in
  32. PCMCIA card drivers. Instead, it is the job of the PCMCIA core to
  33. determine which IRQ should be used. Therefore, link->irq.IRQInfo2
  34. is ignored.
  35. * client->PendingEvents is gone (as of 2.6.11)
  36. client->PendingEvents is no longer available.
  37. * client->Attributes are gone (as of 2.6.11)
  38. client->Attributes is unused, therefore it is removed from all
  39. PCMCIA card drivers
  40. * core functions no longer available (as of 2.6.11)
  41. The following functions have been removed from the kernel source
  42. because they are unused by all in-kernel drivers, and no external
  43. driver was reported to rely on them:
  44. pcmcia_get_first_region()
  45. pcmcia_get_next_region()
  46. pcmcia_modify_window()
  47. pcmcia_set_event_mask()
  48. pcmcia_get_first_window()
  49. pcmcia_get_next_window()
  50. * device list iteration upon module removal (as of 2.6.10)
  51. It is no longer necessary to iterate on the driver's internal
  52. client list and call the ->detach() function upon module removal.
  53. * Resource management. (as of 2.6.8)
  54. Although the PCMCIA subsystem will allocate resources for cards,
  55. it no longer marks these resources busy. This means that driver
  56. authors are now responsible for claiming your resources as per
  57. other drivers in Linux. You should use request_region() to mark
  58. your IO regions in-use, and request_mem_region() to mark your
  59. memory regions in-use. The name argument should be a pointer to
  60. your driver name. Eg, for pcnet_cs, name should point to the
  61. string "pcnet_cs".
  62. * CardServices is gone
  63. CardServices() in 2.4 is just a big switch statement to call various
  64. services. In 2.6, all of those entry points are exported and called
  65. directly (except for pcmcia_report_error(), just use cs_error() instead).
  66. * struct pcmcia_driver
  67. You need to use struct pcmcia_driver and pcmcia_{un,}register_driver
  68. instead of {un,}register_pccard_driver