Documentation/pcmcia/driver-changes.txt

   1 This file details changes in 2.6 which affect PCMCIA card driver authors:
   2
   3 * no cs_error / CS_CHECK / CONFIG_PCMCIA_DEBUG (as of 2.6.33)
   4    Instead of the cs_error() callback or the CS_CHECK() macro, please use
   5    Linux-style checking of return values, and -- if necessary -- debug
   6    messages using "dev_dbg()" or "pr_debug()".
   7
   8 * New CIS tuple access (as of 2.6.33)
   9    Instead of pcmcia_get_{first,next}_tuple(), pcmcia_get_tuple_data() and
  10    pcmcia_parse_tuple(), a driver shall use "pcmcia_get_tuple()" if it is
  11    only interested in one (raw) tuple, or "pcmcia_loop_tuple()" if it is
  12    interested in all tuples of one type. To decode the MAC from CISTPL_FUNCE,
  13    a new helper "pcmcia_get_mac_from_cis()" was added.
  14
  15 * New configuration loop helper (as of 2.6.28)
  16    By calling pcmcia_loop_config(), a driver can iterate over all available
  17    configuration options. During a driver's probe() phase, one doesn't need
  18    to use pcmcia_get_{first,next}_tuple, pcmcia_get_tuple_data and
  19    pcmcia_parse_tuple directly in most if not all cases.
  20
  21 * New release helper (as of 2.6.17)
  22    Instead of calling pcmcia_release_{configuration,io,irq,win}, all that's
  23    necessary now is calling pcmcia_disable_device. As there is no valid
  24    reason left to call pcmcia_release_io and pcmcia_release_irq, the
  25    exports for them were removed.
  26
  27 * Unify detach and REMOVAL event code, as well as attach and INSERTION
  28   code (as of 2.6.16)
  29        void (*remove)          (struct pcmcia_device *dev);
  30        int (*probe)            (struct pcmcia_device *dev);
  31
  32 * Move suspend, resume and reset out of event handler (as of 2.6.16)
  33        int (*suspend)          (struct pcmcia_device *dev);
  34        int (*resume)           (struct pcmcia_device *dev);
  35   should be initialized in struct pcmcia_driver, and handle
  36   (SUSPEND == RESET_PHYSICAL) and (RESUME == CARD_RESET) events
  37
  38 * event handler initialization in struct pcmcia_driver (as of 2.6.13)
  39    The event handler is notified of all events, and must be initialized
  40    as the event() callback in the driver's struct pcmcia_driver.
  41
  42 * pcmcia/version.h should not be used (as of 2.6.13)
  43    This file will be removed eventually.
  44
  45 * in-kernel device<->driver matching (as of 2.6.13)
  46    PCMCIA devices and their correct drivers can now be matched in
  47    kernelspace. See 'devicetable.txt' for details.
  48
  49 * Device model integration (as of 2.6.11)
  50    A struct pcmcia_device is registered with the device model core,
  51    and can be used (e.g. for SET_NETDEV_DEV) by using
  52    handle_to_dev(client_handle_t * handle).
  53
  54 * Convert internal I/O port addresses to unsigned int (as of 2.6.11)
  55    ioaddr_t should be replaced by unsigned int in PCMCIA card drivers.
  56
  57 * irq_mask and irq_list parameters (as of 2.6.11)
  58    The irq_mask and irq_list parameters should no longer be used in
  59    PCMCIA card drivers. Instead, it is the job of the PCMCIA core to
  60    determine which IRQ should be used. Therefore, link->irq.IRQInfo2
  61    is ignored.
  62
  63 * client->PendingEvents is gone (as of 2.6.11)
  64    client->PendingEvents is no longer available.
  65
  66 * client->Attributes are gone (as of 2.6.11)
  67    client->Attributes is unused, therefore it is removed from all
  68    PCMCIA card drivers
  69
  70 * core functions no longer available (as of 2.6.11)
  71    The following functions have been removed from the kernel source
  72    because they are unused by all in-kernel drivers, and no external
  73    driver was reported to rely on them:
  74         pcmcia_get_first_region()
  75         pcmcia_get_next_region()
  76         pcmcia_modify_window()
  77         pcmcia_set_event_mask()
  78         pcmcia_get_first_window()
  79         pcmcia_get_next_window()
  80
  81 * device list iteration upon module removal (as of 2.6.10)
  82    It is no longer necessary to iterate on the driver's internal
  83    client list and call the ->detach() function upon module removal.
  84
  85 * Resource management. (as of 2.6.8)
  86    Although the PCMCIA subsystem will allocate resources for cards,
  87    it no longer marks these resources busy. This means that driver
  88    authors are now responsible for claiming your resources as per
  89    other drivers in Linux. You should use request_region() to mark
  90    your IO regions in-use, and request_mem_region() to mark your
  91    memory regions in-use. The name argument should be a pointer to
  92    your driver name. Eg, for pcnet_cs, name should point to the
  93    string "pcnet_cs".
  94
  95 * CardServices is gone
  96   CardServices() in 2.4 is just a big switch statement to call various
  97   services.  In 2.6, all of those entry points are exported and called
  98   directly (except for pcmcia_report_error(), just use cs_error() instead).
  99
 100 * struct pcmcia_driver
 101   You need to use struct pcmcia_driver and pcmcia_{un,}register_driver
 102   instead of {un,}register_pccard_driver