linux

History

Rafał Miłecki 646e0827df bcma: handle BCM43227 Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Tested-by: Jack <x6719620@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>		2012-09-24 15:02:07 -04:00
..
bcma_private.h	bcma: detect and register NAND flash device	2012-08-21 16:05:53 -04:00
core.c	bcma: use custom printing functions	2012-07-09 16:36:36 -04:00
driver_chipcommon_nflash.c	bcma: detect and register NAND flash device	2012-08-21 16:05:53 -04:00
driver_chipcommon_pmu.c	bcma: make some functions static	2012-08-10 15:26:52 -04:00
driver_chipcommon_sflash.c	bcma: detect and register serial flash device	2012-08-21 16:05:52 -04:00
driver_chipcommon.c	bcma: fix CC driver compilation on MIPS	2012-07-11 15:40:21 -04:00
driver_gmac_cmn.c	bcma: add trivial GBIT MAC COMMON driver	2012-07-12 15:27:18 -04:00
driver_mips.c	bcma: fix regression in interrupt assignment on mips	2012-07-26 15:37:57 -04:00
driver_pci_host.c	bcma: use custom printing functions	2012-07-09 16:36:36 -04:00
driver_pci.c	bcma: fix null pointer in bcma_core_pci_irq_ctl	2012-06-08 13:47:07 -04:00
host_pci.c	bcma: handle BCM43227	2012-09-24 15:02:07 -04:00
host_soc.c	bcma: make some functions static	2012-08-10 15:26:52 -04:00
Kconfig	bcma: detect and register NAND flash device	2012-08-21 16:05:53 -04:00
main.c	bcma: don't leak memory for PCIE, MIPS, GBIT cores	2012-09-07 15:03:35 -04:00
Makefile	bcma: add place for flash memory support	2012-07-17 15:11:40 -04:00
README
scan.c	bcma: add missing iounmap on error path	2012-07-26 15:37:57 -04:00
scan.h	bcma: fix typo - reading number of slave wrappers	2012-07-12 15:27:17 -04:00
sprom.c	bcma: handle BCM43227	2012-09-24 15:02:07 -04:00
TODO

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.