acrn-kernel/drivers/bcma
Greg Kroah-Hartman 2a81ada32f driver core: make struct bus_type.uevent() take a const *
The uevent() callback in struct bus_type should not be modifying the
device that is passed into it, so mark it as a const * and propagate the
function signature changes out into all relevant subsystems that use
this callback.

Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-27 13:45:52 +01:00
..
Kconfig
Makefile
README
TODO
bcma_private.h
core.c
driver_chipcommon.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_chipcommon_b.c
driver_chipcommon_nflash.c mtd: rawnand: brcmnand: Add platform data structure for BCMA 2022-01-23 16:37:18 +01:00
driver_chipcommon_pflash.c
driver_chipcommon_pmu.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_chipcommon_sflash.c
driver_gmac_cmn.c
driver_gpio.c wireless-next patches for v6.2 2022-10-28 18:31:40 -07:00
driver_mips.c bcma: Fix typo in comments 2022-09-07 11:00:30 +03:00
driver_pci.c
driver_pci_host.c bcma: cleanup comments 2022-02-21 10:58:14 +02:00
driver_pcie2.c
host_pci.c bcma: simplify reference to driver name 2021-10-12 17:50:12 -05:00
host_soc.c
main.c driver core: make struct bus_type.uevent() take a const * 2023-01-27 13:45:52 +01:00
scan.c bcma: Drop the unused parameter of bcma_scan_read32() 2021-08-29 14:44:57 +03:00
scan.h
sprom.c bcma: support SPROM rev 11 2022-10-19 08:59:37 +03:00

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.