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arkos
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kernel
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drivers
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bcma
Aarav90-cpu dc0d1c50f0 Initial Commit 7 tuntia sitten
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Kconfig dc0d1c50f0 Initial Commit 7 tuntia sitten
Makefile dc0d1c50f0 Initial Commit 7 tuntia sitten
README dc0d1c50f0 Initial Commit 7 tuntia sitten
TODO dc0d1c50f0 Initial Commit 7 tuntia sitten
bcma_private.h dc0d1c50f0 Initial Commit 7 tuntia sitten
core.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon_b.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon_nflash.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon_pflash.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon_pmu.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_chipcommon_sflash.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_gmac_cmn.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_gpio.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_mips.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_pci.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_pci_host.c dc0d1c50f0 Initial Commit 7 tuntia sitten
driver_pcie2.c dc0d1c50f0 Initial Commit 7 tuntia sitten
host_pci.c dc0d1c50f0 Initial Commit 7 tuntia sitten
host_soc.c dc0d1c50f0 Initial Commit 7 tuntia sitten
main.c dc0d1c50f0 Initial Commit 7 tuntia sitten
scan.c dc0d1c50f0 Initial Commit 7 tuntia sitten
scan.h dc0d1c50f0 Initial Commit 7 tuntia sitten
sprom.c dc0d1c50f0 Initial Commit 7 tuntia sitten

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.