Linus Torvalds 5c33d9b248 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net há 13 anos atrás
..
Kconfig a733311413 bcma: BCMA_DRIVER_GPIO should depend on GPIOLIB instead of selecting it há 13 anos atrás
Makefile cf0936b06d bcma: add GPIO driver há 13 anos atrás
README 8369ae33b7 bcma: add Broadcom specific AMBA bus driver há 14 anos atrás
TODO 8369ae33b7 bcma: add Broadcom specific AMBA bus driver há 14 anos atrás
bcma_private.h 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
core.c 1fd41a65f1 bcma: change delays to follow timers-howto guide há 13 anos atrás
driver_chipcommon.c cebfa85eb8 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus há 13 anos atrás
driver_chipcommon_nflash.c e661b75a44 bcma: mark nflash if it is the boot flash há 13 anos atrás
driver_chipcommon_pmu.c ca2a88f56a Merge tag 'for-linus-20121219' of git://git.infradead.org/linux-mtd há 13 anos atrás
driver_chipcommon_sflash.c 4dd6ff72c4 bcma: correct M25P32 serial flash ID há 13 anos atrás
driver_gmac_cmn.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
driver_gpio.c cf0936b06d bcma: add GPIO driver há 13 anos atrás
driver_mips.c cbbc0138ef bcma: mips: fix clearing device IRQ há 13 anos atrás
driver_pci.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
driver_pci_host.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
host_pci.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
host_soc.c 94f3457f4d bcma: make some functions static há 13 anos atrás
main.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. há 13 anos atrás
scan.c 9dbf5f55f8 bcma: add missing iounmap on error path há 13 anos atrás
scan.h 97cfda8fec bcma: fix typo - reading number of slave wrappers há 13 anos atrás
sprom.c 017c4c3bde bcma: use fallback sprom if sprom on card was not valid há 13 anos atrás

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.