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linux_kernel
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drivers
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bcma
Boris Brezillon a58d0b4d51 bcma: Allow selection of this driver when COMPILE_TEST=y 7 vuotta sitten
..
Kconfig a58d0b4d51 bcma: Allow selection of this driver when COMPILE_TEST=y 7 vuotta sitten
Makefile b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 7 vuotta sitten
README 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 vuotta sitten
TODO 8369ae33b7 bcma: add Broadcom specific AMBA bus driver 14 vuotta sitten
bcma_private.h b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 7 vuotta sitten
core.c 972da7ec49 bcma: update core (en|dis)abling functions 12 vuotta sitten
driver_chipcommon.c 7195439d1d Revert "bcma: init serial console directly from ChipCommon code" 8 vuotta sitten
driver_chipcommon_b.c cc2d1de06f bcma: define ChipCommon B MII registers 9 vuotta sitten
driver_chipcommon_nflash.c f5237f278f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 12 vuotta sitten
driver_chipcommon_pflash.c d6a3b51ada bcma: move parallel flash support to separated file 9 vuotta sitten
driver_chipcommon_pmu.c 8100091d02 bcma: Replace mdelay with usleep_range in bcma_pmu_resources_init 7 vuotta sitten
driver_chipcommon_sflash.c 5651d6aaf4 mtd: bcm47xxsflash: use ioremap_cache() instead of KSEG0ADDR() 9 vuotta sitten
driver_gmac_cmn.c 0f58a01ddd Drivers: bcma: remove __dev* attributes. 12 vuotta sitten
driver_gpio.c f0fbe7bce7 gpio: Move irqdomain into struct gpio_irq_chip 7 vuotta sitten
driver_mips.c 361de091a4 bcma: fix buffer size caused crash in bcma_core_mips_print_irq() 7 vuotta sitten
driver_pci.c 702131e2a3 bcma: move PCI IRQ control function to host specific code 10 vuotta sitten
driver_pci_host.c 2264fc857d bcma: add missing includes 10 vuotta sitten
driver_pcie2.c a765c8fdc8 bcma: Adjust block comment 7 vuotta sitten
host_pci.c 985324a16e bcma: add HP Stream Notebook 7 vuotta sitten
host_soc.c c5ed1df781 bcma: use standard bus scanning during early register 10 vuotta sitten
main.c 3d6ce86ee7 drivers: remove force dma flag from buses 7 vuotta sitten
scan.c 0c06f5d43e bcma: support chipsets with PMU and GCI cores (devices) 9 vuotta sitten
scan.h b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 7 vuotta sitten
sprom.c 3c31316135 bcma: detect SPROM revision 11 10 vuotta 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.