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linux_kernel
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bcma
John W. Linville 41bf37117b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 14 ani în urmă
..
Kconfig 9352f69c91 bcma: detect PCI core working in hostmode 14 ani în urmă
Makefile 9352f69c91 bcma: detect PCI core working in hostmode 14 ani în urmă
README 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 ani în urmă
TODO 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 ani în urmă
bcma_private.h 9352f69c91 bcma: detect PCI core working in hostmode 14 ani în urmă
core.c 05aec23336 bcma: inform drivers about translation bits needed for the core 14 ani în urmă
driver_chipcommon.c 18dfa4952c bcma: cc: set GPIOTIMER register 14 ani în urmă
driver_chipcommon_pmu.c 898f699e7f bcma: fix BCM43224 rev 0 workaround 14 ani în urmă
driver_pci.c 6e6e8c510a bcma: fix 'SSB_PCICORE_BFL_NOPCI' undeclared build breakage 14 ani în urmă
driver_pci_host.c 9352f69c91 bcma: detect PCI core working in hostmode 14 ani în urmă
host_pci.c 36099365c7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 14 ani în urmă
main.c 534e7a4566 bcma: add check if sprom is available before accessing it. 14 ani în urmă
scan.c 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 ani în urmă
scan.h 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 ani în urmă
sprom.c eb1577b7c4 bcma: handle alternative SPROM location 14 ani în urmă

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.