WSL2-Linux-Kernel

История

Henrik Rydberg 2e6b411971 bcma: don't fail for bad SPROM CRC The brcmsmac driver is now using the bcma SPROM CRC check, which does not recognize all chipsets that were functional prior to the switch. In particular, the current code bails out on odd CRC errors in recent Macbooks. This patch ignores those errors, with the argument that an unrecognized SPROM should be treated similarly to a non-existing one. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: John W. Linville <linville@tuxdriver.com>		2012-02-06 14:37:52 -05:00
..
Kconfig	bcma: add mips driver	2011-08-08 14:29:26 -04:00
Makefile	bcma: add mips driver	2011-08-08 14:29:26 -04:00
README	bcma: add Broadcom specific AMBA bus driver	2011-05-10 15:54:54 -04:00
TODO	bcma: add Broadcom specific AMBA bus driver	2011-05-10 15:54:54 -04:00
bcma_private.h	bcma: add stub for bcma_bus_suspend()	2012-01-17 09:54:05 -05:00
core.c	bcma: fix implicit use of export.h contents	2011-10-31 19:32:02 -04:00
driver_chipcommon.c	bcma: fix implicit use of export.h contents	2011-10-31 19:32:02 -04:00
driver_chipcommon_pmu.c	bcma: fix implicit use of export.h contents	2011-10-31 19:32:02 -04:00
driver_mips.c	bcma: get CPU clock	2011-08-08 14:29:29 -04:00
driver_pci.c	bcma: fix implicit use of export.h contents	2011-10-31 19:32:02 -04:00
driver_pci_host.c	bcma: detect PCI core working in hostmode	2011-07-07 13:13:34 -04:00
host_pci.c	bcma: add stub for bcma_bus_suspend()	2012-01-17 09:54:05 -05:00
host_soc.c	bcma: add SOC bus	2011-08-08 14:29:25 -04:00
main.c	bcma: don't fail for bad SPROM CRC	2012-02-06 14:37:52 -05:00
scan.c	bcma: Fix mem leak in bcma_bus_scan()	2012-02-01 15:24:35 -05:00
scan.h	bcma: add Broadcom specific AMBA bus driver	2011-05-10 15:54:54 -04:00
sprom.c	bcma: extract revision and TX power IDs from SPROM	2011-12-13 15:47:41 -05:00

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.