linux-sg2042/drivers/bcma
Jiri Slaby 59391a96dc bcma: add Dell Inspiron 3148
This is what is in the laptop:
01:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)
        Subsystem: Dell Device [1028:0018]
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at b0400000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: [40] Power Management version 3
        Capabilities: [58] Vendor Specific Information: Len=78 <?>
        Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [d0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [13c] Virtual Channel
        Capabilities: [160] Device Serial Number 00-00-9a-ff-ff-f3-40-b8
        Capabilities: [16c] Power Budgeting <?>

With the patch, I can see:
bcma: bus0: Found chip with id 43142, rev 0x01 and package 0x08
bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x28, class 0x0)
bcma: bus0: Core 1 found: IEEE 802.11 (manuf 0x4BF, id 0x812, rev 0x21, class 0x0)
bcma: bus0: Core 2 found: PCIe (manuf 0x4BF, id 0x820, rev 0x16, class 0x0)
bcma: bus0: Core 3 found: UNKNOWN (manuf 0x43B, id 0x368, rev 0x00, class 0x0)
bcma: bus0: Bus registered

The wifi is not currently supported by brcmsmac yet:
brcmsmac bcma1:1: mfg 4bf core 812 rev 33 class 0 irq 18
brcmsmac: unknown device id 4365

So don't expect a working wifi from this patch :).

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: <linux-wireless@vger.kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-11-29 17:35:14 +02:00
..
Kconfig bcma: allow enabling serial flash support on non-MIPS SoCs 2016-07-18 22:43:35 +03:00
Makefile bcma: move parallel flash support to separated file 2016-03-07 14:41:08 +02:00
README
TODO
bcma_private.h x86/quirks: Add early quirk to reset Apple AirPort card 2016-07-10 20:13:53 +02:00
core.c bcma: update core (en|dis)abling functions 2013-06-17 14:38:53 -04:00
driver_chipcommon.c bcma: support BCM53573 series of wireless SoCs 2016-09-03 12:58:42 +03:00
driver_chipcommon_b.c bcma: define ChipCommon B MII registers 2016-07-19 21:13:10 +03:00
driver_chipcommon_nflash.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2013-02-14 14:23:33 -05:00
driver_chipcommon_pflash.c bcma: move parallel flash support to separated file 2016-03-07 14:41:08 +02:00
driver_chipcommon_pmu.c bcma: support PMU present as separated bus core 2016-02-06 13:36:11 +02:00
driver_chipcommon_sflash.c mtd: bcm47xxsflash: use ioremap_cache() instead of KSEG0ADDR() 2016-04-04 00:07:57 -07:00
driver_gmac_cmn.c Drivers: bcma: remove __dev* attributes. 2013-01-03 15:57:15 -08:00
driver_gpio.c Major changes: 2016-02-16 20:38:29 -05:00
driver_mips.c bcma: move flash detection code to ChipCommon core driver 2016-03-07 14:41:08 +02:00
driver_pci.c bcma: move PCI IRQ control function to host specific code 2015-03-13 16:25:50 +02:00
driver_pci_host.c bcma: add missing includes 2015-03-03 15:26:38 +02:00
driver_pcie2.c bcma: add missing includes 2015-03-03 15:26:38 +02:00
host_pci.c bcma: add Dell Inspiron 3148 2016-11-29 17:35:14 +02:00
host_soc.c bcma: use standard bus scanning during early register 2015-01-23 21:47:55 +02:00
main.c bcma: use of_dma_configure() to set initial dma mask 2016-09-09 12:00:37 +03:00
scan.c bcma: support chipsets with PMU and GCI cores (devices) 2016-02-06 13:34:51 +02:00
scan.h bcma: fix typo - reading number of slave wrappers 2012-07-12 15:27:17 -04:00
sprom.c bcma: detect SPROM revision 11 2015-01-29 10:49:28 +02:00

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.