linux/drivers/bcma
Rafał Miłecki dc6be9f54a bcma: use NS prefix for names of Northstar specific cores
It's cleaner and we don't have quite identical names like
BCMA_CORE_PCIEG2 and BCMA_CORE_PCIE2.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-07-31 13:45:32 -04:00
..
Kconfig
Makefile bcma: add driver for PCIe Gen 2 core 2014-07-07 16:32:16 -04:00
README
TODO
bcma_private.h
core.c
driver_chipcommon.c
driver_chipcommon_nflash.c
driver_chipcommon_pmu.c bcma: add support for BCM43131 that was found in Tenda W311E 2014-07-29 10:32:57 -04:00
driver_chipcommon_sflash.c
driver_gmac_cmn.c
driver_gpio.c
driver_mips.c
driver_pci.c
driver_pci_host.c
driver_pcie2.c bcma: add driver for PCIe Gen 2 core 2014-07-07 16:32:16 -04:00
host_pci.c bcma: add support for BCM43131 that was found in Tenda W311E 2014-07-29 10:32:57 -04:00
host_soc.c
main.c bcma: add driver for PCIe Gen 2 core 2014-07-07 16:32:16 -04:00
scan.c bcma: use NS prefix for names of Northstar specific cores 2014-07-31 13:45:32 -04:00
scan.h
sprom.c bcma: add support for BCM43131 that was found in Tenda W311E 2014-07-29 10:32:57 -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.