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linux-2.6/drivers/bcma
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Rafał Miłecki 440ca98fe8 bcma: clean exports of functions 
Function managing IRQs is needed for external drivers like b43.
On the other side we do not expect writing any hosts drivers outside of
bcma, so this is safe to do not export functions related to this.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
 		2011-06-20 15:34:19 -04:00
..
Kconfig bcma: host pci: implement block R/W operations 2011-06-01 15:12:28 -04:00
Makefile bcma: read SPROM and extract MAC from it 2011-06-03 15:01:07 -04:00
README
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TODO
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bcma_private.h bcma: clean exports of functions 2011-06-20 15:34:19 -04:00
core.c drivers: bcma: export bcma_core_disable() function 2011-06-10 14:57:53 -04:00
driver_chipcommon.c bcma: add missing GPIO defines, use PULL register only when available 2011-05-11 14:50:41 -04:00
driver_chipcommon_pmu.c bcma: fix BCM43224 rev 0 workaround 2011-06-20 15:34:19 -04:00
driver_pci.c bcma: clean exports of functions 2011-06-20 15:34:19 -04:00
host_pci.c bcma: enable support for 14e4:4357 (BCM43225) 2011-06-20 15:34:18 -04:00
main.c bcma: clean exports of functions 2011-06-20 15:34:19 -04:00
scan.c
…
scan.h
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sprom.c bcma: read SPROM and extract MAC from it 2011-06-03 15:01:07 -04:00

README 

Broadcom introduced new bus as replacement for older SSB. It is based on AMBA,
however from programming point of view there is nothing AMBA specific we use.

Standard AMBA drivers are platform specific, have hardcoded addresses and use
AMBA standard fields like CID and PID.

In case of Broadcom's cards every device consists of:
1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated
   as standard AMBA device. Reading it's CID or PID can cause machine lockup.
2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID)
   and PIDs (0x103BB369), but we do not use that info for anything. One of that
   devices is used for managing Broadcom specific core.

Addresses of AMBA devices are not hardcoded in driver and have to be read from
EPROM.

In this situation we decided to introduce separated bus. It can contain up to
16 devices identified by Broadcom specific fields: manufacturer, id, revision
and class.