linux

History

Colin Ian King c57391f415 bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size Arrays pwr_info_offset and sprom_sizes can be make static const rather than populating them on the stack. Shrinks object size by 236 bytes. Before: text data bss dec hex filename 11300 1320 64 12684 318c drivers/bcma/sprom.o After: text data bss dec hex filename 10904 1480 64 12448 30a0 drivers/bcma/sprom.o (gcc version 9.2.1, amd64) Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>		2019-09-13 16:44:49 +03:00
..
bcma_private.h
core.c
driver_chipcommon_b.c
driver_chipcommon_nflash.c
driver_chipcommon_pflash.c
driver_chipcommon_pmu.c
driver_chipcommon_sflash.c
driver_chipcommon.c
driver_gmac_cmn.c
driver_gpio.c
driver_mips.c	bcma: remove two unused variables	2019-09-03 16:37:53 +03:00
driver_pci_host.c
driver_pci.c	bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA	2019-09-03 16:44:02 +03:00
driver_pcie2.c
host_pci.c	bcma: Use dev_get_drvdata	2019-08-06 15:25:28 +03:00
host_soc.c
Kconfig
main.c
Makefile
README
scan.c
scan.h
sprom.c	bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size	2019-09-13 16:44:49 +03:00
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.