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Diffstat (limited to 'Documentation/pcmcia/driver-changes.txt')
| -rw-r--r-- | Documentation/pcmcia/driver-changes.txt | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/Documentation/pcmcia/driver-changes.txt b/Documentation/pcmcia/driver-changes.txt new file mode 100644 index 0000000..0599343 --- /dev/null +++ b/Documentation/pcmcia/driver-changes.txt @@ -0,0 +1,90 @@ +This file details changes in 2.6 which affect PCMCIA card driver authors: + +* New configuration loop helper (as of 2.6.28) + By calling pcmcia_loop_config(), a driver can iterate over all available + configuration options. During a driver's probe() phase, one doesn't need + to use pcmcia_get_{first,next}_tuple, pcmcia_get_tuple_data and + pcmcia_parse_tuple directly in most if not all cases. + +* New release helper (as of 2.6.17) + Instead of calling pcmcia_release_{configuration,io,irq,win}, all that's + necessary now is calling pcmcia_disable_device. As there is no valid + reason left to call pcmcia_release_io and pcmcia_release_irq, the + exports for them were removed. + +* Unify detach and REMOVAL event code, as well as attach and INSERTION + code (as of 2.6.16) + void (*remove) (struct pcmcia_device *dev); + int (*probe) (struct pcmcia_device *dev); + +* Move suspend, resume and reset out of event handler (as of 2.6.16) + int (*suspend) (struct pcmcia_device *dev); + int (*resume) (struct pcmcia_device *dev); + should be initialized in struct pcmcia_driver, and handle + (SUSPEND == RESET_PHYSICAL) and (RESUME == CARD_RESET) events + +* event handler initialization in struct pcmcia_driver (as of 2.6.13) + The event handler is notified of all events, and must be initialized + as the event() callback in the driver's struct pcmcia_driver. + +* pcmcia/version.h should not be used (as of 2.6.13) + This file will be removed eventually. + +* in-kernel device<->driver matching (as of 2.6.13) + PCMCIA devices and their correct drivers can now be matched in + kernelspace. See 'devicetable.txt' for details. + +* Device model integration (as of 2.6.11) + A struct pcmcia_device is registered with the device model core, + and can be used (e.g. for SET_NETDEV_DEV) by using + handle_to_dev(client_handle_t * handle). + +* Convert internal I/O port addresses to unsigned int (as of 2.6.11) + ioaddr_t should be replaced by unsigned int in PCMCIA card drivers. + +* irq_mask and irq_list parameters (as of 2.6.11) + The irq_mask and irq_list parameters should no longer be used in + PCMCIA card drivers. Instead, it is the job of the PCMCIA core to + determine which IRQ should be used. Therefore, link->irq.IRQInfo2 + is ignored. + +* client->PendingEvents is gone (as of 2.6.11) + client->PendingEvents is no longer available. + +* client->Attributes are gone (as of 2.6.11) + client->Attributes is unused, therefore it is removed from all + PCMCIA card drivers + +* core functions no longer available (as of 2.6.11) + The following functions have been removed from the kernel source + because they are unused by all in-kernel drivers, and no external + driver was reported to rely on them: + pcmcia_get_first_region() + pcmcia_get_next_region() + pcmcia_modify_window() + pcmcia_set_event_mask() + pcmcia_get_first_window() + pcmcia_get_next_window() + +* device list iteration upon module removal (as of 2.6.10) + It is no longer necessary to iterate on the driver's internal + client list and call the ->detach() function upon module removal. + +* Resource management. (as of 2.6.8) + Although the PCMCIA subsystem will allocate resources for cards, + it no longer marks these resources busy. This means that driver + authors are now responsible for claiming your resources as per + other drivers in Linux. You should use request_region() to mark + your IO regions in-use, and request_mem_region() to mark your + memory regions in-use. The name argument should be a pointer to + your driver name. Eg, for pcnet_cs, name should point to the + string "pcnet_cs". + +* CardServices is gone + CardServices() in 2.4 is just a big switch statement to call various + services. In 2.6, all of those entry points are exported and called + directly (except for pcmcia_report_error(), just use cs_error() instead). + +* struct pcmcia_driver + You need to use struct pcmcia_driver and pcmcia_{un,}register_driver + instead of {un,}register_pccard_driver |
