Wi-Fi Bluetooth for Linux

Hello,

We are trying to use the brcmfmac backports driver for a CYW43455 on and Allwinner BSP using Android 8.1 + Kernel 4.9. We were previously using the bcmdhd driver + hal (using libhardware_legacy) provided by the Allwinner BSP. We have built the brcmfmac backport kernel modules (v5.4.18-2020_0925), and the firmware (provided by our vendor AzureWave) is being loaded successfully:

6,7572,90624538,-;brcmfmac: brcmf_fw_alloc_request: using /system/vendor/modules/fw_cyw43455 for chip BCM4345/6
6,7574,90677612,-;brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Aug 16 2020 21:23:41 version 7.45.203 (r724662 CY) FWID 01-4cfc72ea

However the wlan0 network device is not available, and the WifiVenorHal fails to load:

02-24 23:00:31.013 1990 2239 D WifiService: setWifiEnabled: true pid=22334, uid=0, package=com.android.shell
02-24 23:00:31.013 1990 2239 I WifiService: setWifiEnabled package=com.android.shell uid=0 enable=true
02-24 23:00:31.014 1990 2116 D WifiStateMachine: setting operational mode to 1
02-24 23:00:31.014 1990 2116 D WifiStateMachine: setting operational mode to 1
02-24 23:00:31.015 1990 2117 D WifiStateMachine: InitialState !CMD_SET_OPERATIONAL_MODE rt=10880343/10880343 1 0
02-24 23:00:31.015 1990 2117 D WifiStateMachine: InitialState !CMD_START_SUPPLICANT rt=10880343/10880343 0 0
02-24 23:00:31.015 1990 2117 D HalDeviceManager: isSupportedInternal
02-24 23:00:31.017 1990 2117 D HalDeviceManager: startWifi
02-24 23:00:31.018 1682 1682 I android.hardware.wifi@1.0-service: Wifi HAL started
02-24 23:00:31.018 1990 2101 D HalDeviceManager: IWifiEventCallback.onStart
02-24 23:00:31.018 1990 2117 D HalDeviceManager: initIWifiChipDebugListeners
02-24 23:00:31.019 1990 2117 D HalDeviceManager: getChipIds=[0]
02-24 23:00:31.021 1990 2117 D HalDeviceManager: createIface: ifaceType=0
02-24 23:00:31.022 1990 2117 D HalDeviceManager: getAllChipInfo
02-24 23:00:31.022 1990 2117 D HalDeviceManager: getChipIds=[0]
02-24 23:00:31.027 1990 2117 D HalDeviceManager: validateInterfaceCache
02-24 23:00:31.028 1990 2117 D HalDeviceManager: createIfaceIfPossible: chipInfos=[{chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0)], ifaceType=0
02-24 23:00:31.028 1990 2117 D HalDeviceManager: {.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]} expands to [[1, 0, 1, 0]]
02-24 23:00:31.029 1990 2117 D HalDeviceManager: canIfaceComboSupportRequest: chipInfo={chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0), chipMode={.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, chipIfaceCombo=[I@f320350, ifaceType=0
02-24 23:00:31.029 1990 2117 D HalDeviceManager: compareIfaceCreationData: val1={chipInfo={chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0), chipModeId=0, interfacesToBeRemovedFirst=[]), val2=null
02-24 23:00:31.029 1990 2117 D HalDeviceManager: new proposal accepted
02-24 23:00:31.030 1990 2117 D HalDeviceManager: {.limits = [{.types = [1], .maxIfaces = 1}]} expands to [[0, 1, 0, 0]]
02-24 23:00:31.030 1990 2117 D HalDeviceManager: canIfaceComboSupportRequest: chipInfo={chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0), chipMode={.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}, chipIfaceCombo=[I@dfd924e, ifaceType=0
02-24 23:00:31.030 1990 2117 D HalDeviceManager: Requested type not supported by combo
02-24 23:00:31.031 1990 2117 D HalDeviceManager: compareIfaceCreationData: val1=null, val2={chipInfo={chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0), chipModeId=0, interfacesToBeRemovedFirst=[])
02-24 23:00:31.031 1990 2117 D HalDeviceManager: executeChipReconfiguration: ifaceCreationData={chipInfo={chipId=0, availableModes=[{.id = 0, .availableCombinations = [{.limits = [{.types = [0], .maxIfaces = 1}, {.types = [2], .maxIfaces = 1}]}]}, {.id = 1, .availableCombinations = [{.limits = [{.types = [1], .maxIfaces = 1}]}]}], currentModeIdValid=false, currentModeId=0, ifaces[1].length=0, ifaces[0].length=0, ifaces[2].length=0, ifaces[3].length=0), chipModeId=0, interfacesToBeRemovedFirst=[]), ifaceType=0
02-24 23:00:31.031 1990 2117 D HalDeviceManager: isModeConfigNeeded=true
02-24 23:00:31.032 1682 1682 E android.hardware.wifi@1.0-service: wifi_load_driver: Start to insmod brcmfmac.ko
02-24 23:00:31.032 1682 1682 E android.hardware.wifi@1.0-service: module_arg= nvram_path=/system/vendor/modules/nvram_awcm390sm.txt config_path=/system/vendor/modules/config_awcm390sm.txt
02-24 23:00:31.032 1682 1682 E android.hardware.wifi@1.0-service: module_path= /system/vendor/modules/brcmfmac.ko
02-24 23:00:31.032 1682 1682 I android.hardware.wifi@1.0-service: Open /system/vendor/modules/brcmfmac.ko succuss.
02-24 23:00:31.076 1682 1682 I android.hardware.wifi@1.0-service: Do finit_module ret = 0
02-24 23:00:31.077 1682 1682 I android.hardware.wifi@1.0-service: wifi_driver_fw_path_param = /sys/module/brcmfmac/parameters/alternative_fw_path
02-24 23:00:31.078 1682 1682 E android.hardware.wifi@1.0-service: Could not read interface state for wlan0 (No such device)
02-24 23:00:31.078 1682 1682 E android.hardware.wifi@1.0-service: Failed to set WiFi interface up
02-24 23:00:31.078 1682 1682 E android.hardware.wifi@1.0-service: Failed to start legacy HAL: UNKNOWN
02-24 23:00:31.079 1990 2101 D HalDeviceManager: onChipReconfigureFailure: status=9 (unknown)
02-24 23:00:31.079 1990 2117 E HalDeviceManager: executeChipReconfiguration: configureChip error: 9 (unknown)
02-24 23:00:31.079 1990 2117 E WifiVendorHal: Failed to create STA Iface. Vendor Hal start failed
02-24 23:00:31.079 1990 2117 D HalDeviceManager: stopWifi
02-24 23:00:32.712 1990 2023 D IpManager.wlan0: interfaceAdded(wlan0)
02-24 23:00:33.336 1990 2023 D IpManager.wlan0: interfaceRemoved(wlan0)

What are we missing to create the wlan0 interface?

Hello,

We're currently using a CYW43455 and porting brcmfmac to and Android 8.1 BSP w/ Kernel 4.9 using backports v5.4.18. We used to be using the bcmdhd driver. bcmdhd will load a 'config.txt' file that sets certain configurations that don't seem to be available in the brcmfmac driver?

This config.txt file allows us to configure things like the supported bands, bw_caps, channels etc.. for different scenarios. Specifically we would like to disable 5Ghz entirely, which we would previously accomplish by setting "band=b" in bcmdhd's config.txt.

How do we support these configurations in brcmfmac?

Thanks!

We are using imx6ul custom board with kernel version 5.4

here are the logs

compat: loading out-of-tree module taints kernel.
[ 48.112816] Loading modules backported from Linux version v5.4.18-2020_0402-0-g392330e
[ 48.136949] Backport generated by backports.git v5.5.11-1-0-gabe05f0
[ 52.381616] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 52.438974] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 52.448004] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 52.456654] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
[ 64.488165] imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2
[ 64.512666] imx-sdma 20ec000.sdma: Falling back to sysfs fallback for: imx/sdma/sdma-imx6q.bin
[ 90.690569] mmc0: queuing unknown CIS tuple 0x80 (2 bytes)
[ 90.701665] mmc0: queuing unknown CIS tuple 0x80 (3 bytes)
[ 90.710733] mmc0: queuing unknown CIS tuple 0x80 (3 bytes)
[ 90.721296] mmc0: queuing unknown CIS tuple 0x80 (7 bytes)
[ 90.731692] mmc0: queuing unknown CIS tuple 0x80 (6 bytes)
[ 90.852696] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 90.882206] usbcore: registered new interface driver brcmfmac
[ 90.893490] brcmfmac mmc0:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.fsl,imx6ul-14x14-evk.txt failed with error -2
[ 90.918201] brcmfmac mmc0:0001:1: Falling back to sysfs fallback for: brcm/brcmfmac43455-sdio.fsl,imx6ul-14x14-evk.txt
[ 115.688266] cfg80211: failed to load regulatory.db
[ 125.928556] imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware
[ 152.543901] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50

Hi,

I'm using BCM4354 wifi module in our product. For FCC compliance testing I need to put the module in continuous transmission in the following modes - 802.11b, g, n(20MHz), n(40MHz) and ac. By referring the Cypress Wi-Fi CLM Regulatory Manual.pdf I was able to do the same. However, I have few concerns in the testing. Kindly, help me in resolving the below 2 issues.

1. What is the transmission power to be set for each mode in the compliance testing (wl txpwr1 -o XX)? I have used 19 for all the modes given in an example in the document. Is this value correct?
2. 802.11n (40MHz) mode works in 5GHz band and not in 2.4 GHz band. I used below command and I'm getting following error for that,

                      $ wl chanspec -c 1 b 2 -w 40 -s 1             -> channel-1, operating band-2.4GHz, bandwidth - 40MHz

                         wl:error -20

             Is this module limitation?

Anticipating your quick response.

Regards,

Akash Sekhar

Hello Everyone,

We are using BCM43455 with imx7d on our board. our development is in Android 9.0. The Bluetooth and wifi for our board is working all fine. However, our client wants to enforce a particular security level for BLE and BT. 

BLE - Security Mode 1, Level 4

Classic Bluetooth - Security Mode 4, level 4.

I know that this chip supports Bluetooth 5.0 and supports the above mode. But because we are using android and it supports all the security modes, I am not sure how to enforce the above 2 only.

1. Can I change any configuration to support the above modes in kernel configuration or android permissions, which I am not aware of?

2. Or would have to do changes in the software, if yes could you please help by giving some pointer to start?

Any help is really appreciated.

Thanks