linux

History

Matt Redfearn 79ca239a68 bcma: Prevent build of PCI host features in module Attempting to build bcma.ko with BCMA_DRIVER_PCI_HOSTMODE=y results in a build error due to use of symbols not exported from vmlinux: ERROR: "pcibios_enable_device" [drivers/bcma/bcma.ko] undefined! ERROR: "register_pci_controller" [drivers/bcma/bcma.ko] undefined! make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1 To prevent this, don't allow the host mode feature to be built if CONFIG_BCMA=m Signed-off-by: Matt Redfearn <matt.redfearn@mips.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>		2018-03-13 18:47:47 +02:00
..
bcma_private.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
core.c
driver_chipcommon_b.c
driver_chipcommon_nflash.c
driver_chipcommon_pflash.c
driver_chipcommon_pmu.c	bcma: Replace mdelay with usleep_range in bcma_pmu_resources_init	2018-02-27 15:52:13 +02:00
driver_chipcommon_sflash.c
driver_chipcommon.c	Revert "bcma: init serial console directly from ChipCommon code"	2017-01-17 14:23:44 +02:00
driver_gmac_cmn.c
driver_gpio.c	gpio: Move irqdomain into struct gpio_irq_chip	2017-11-08 14:06:21 +01:00
driver_mips.c	bcma: Use bcma_debug and not pr_cont in MIPS driver	2017-10-27 11:01:37 +03:00
driver_pci_host.c
driver_pci.c
driver_pcie2.c	bcma: Adjust block comment	2017-12-07 15:33:02 +02:00
host_pci.c	bcma: add HP Stream Notebook	2018-02-28 16:37:22 +02:00
host_soc.c
Kconfig	bcma: Prevent build of PCI host features in module	2018-03-13 18:47:47 +02:00
main.c	bcma: fill core OF info independently of bus type	2017-03-20 19:12:01 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
README
scan.c
scan.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sprom.c
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.