我们使用的是久久派开发板WiFi版本开发板使用的WiFi芯片为CDW.20800D4这是 AIC (爱科微) 生产的一款集成了WiFi和蓝牙二合一通信模组。我们之前移植了linux 6.12版本的内核这个版本的内核默认并没有支持CDW.20800D4因此我们需要去移植相应的驱动。在《 Rockchip RK3399 - WiFi AP6356驱动》我们对WiFi概念进行了大量的介绍本篇博客不再赘述。回到顶部一、CDW.20800D420800D4 系列是一款单芯片无线局域网WLAN和蓝牙BT组合解决方案支持 1 × 1 IEEE 802.11a/b/g/n/ac/ax WLAN 标准以及 BT 5.4能够实现 WLAN/BT 与低功耗技术的无缝集成。特性 说明接口 支持低功耗 SDIO 3.0 接口用于 WLAN以及 UART/PCM 接口用于 BT集成度 提供高度集成的 WLAN 系统级芯片SoC适用于 5GHz 802.11ac 或 2.4GHz/5GHz 802.11n WLAN 应用频段支持 支持 WLAN 2.4GHz 和 5GHz 频段信道蓝牙支持 支持 BT 5.4、BLE、ANT并向后兼容 BT 1.x 和 BT 2.x EDR增强数据速率射频设计 支持单端射频端口可实现更简洁、更低成本的设计信道带宽 2.4GHz 支持 20MHz/40MHz5GHz 支持 20MHz、40MHz先进技术 支持 MU-MIMO多用户多输入多输出和 OFDMA正交频分多址更多有关CDW.20800D4的内容参考《久久派无线模块规格书/5_CDW.20800D4_Series_specification_V1.3_20240201.pdf》。1.1 功能框图CDW.20800D4功能框图如图所示现在很多模组都是是集成了WiFi和蓝牙功能的所以我们不只看到有WiFi使用的SDIO接口还有用于蓝牙通讯的UART、PCM接口。我们播放歌曲的时候音乐的数据的传输使用的是UART接口如果是蓝牙通话的时候使用的是PCM接口。所以我们可以在WiFi和蓝牙二合一的芯片上看到3种接口其中SDIO是WiFi的UART和PCM是蓝牙的。1.1.1 Wi-Fi (SDIO) 引脚引脚 名称 说明14 SD_DAT2 SDIO DATA215 SD_DAT3 SDIO DATA316 SD_CMD SDIO 命令线17 SD_CLK SDIO 时钟18 SD_DAT0 SDIO DATA019 SD_DAT1 SDIO DATA11.1.2 蓝牙 (UART) 引脚引脚 名称 说明41 UART_RTS 蓝牙 UART RTS42 UART_TX 蓝牙 UART TX43 UART_RX 蓝牙 UART RX44 UART_CTS 蓝牙 UART CTS1.1.3 控制引脚引脚 名称 说明12 WL_DIS Wi-Fi 使能 (L关闭, H开启)6 Host wake BT 主机唤醒蓝牙7 BT wake host 蓝牙唤醒主机13 WL_Wake-up host Wi-Fi 唤醒主机1.1.4 电源要求电压 最小值 典型值 最大值VDD (3.3V) 3.0V 3.3V 3.6VVDDIO 1.7/3.0V 1.8/3.3V 1.9/3.6V1.2 电路原理图下图是我们使用的是久久派开发板CDW.20800D4的电路原理图从原理图可以看到CDW.20800D4使用的通信接口是SDIO接口。此外与WiFi相关比较重要的引脚WLAN_EN用于WiFi部分的使能连接龙芯处理器TIM1_CH1引脚即GPIO81。回到顶部二、CDW.20800D4设备驱动SDIO总线和USB总线类似SDIO也有两端其中一端为主机Host端另一端是设备端Device采用Host-Device这样的设计是为了简化Device的设计所有的通信都由Host端发出命令开始、在Device端只要能解析Host发出的命令就可以同Host进行通信了SDIO的Host可以连接多个Device。SDIO的驱动可以分为SDIO主机控制器驱动针对不同主机端的SDIO控制器的驱动主机端SDIO设备驱动针对不同客户端的设备驱动程序。如SD卡、T-Flash卡、SDIO接口的GPS和WiFi等设备驱动而WiFi设备驱动实际上又涉及到多个驱动模块比如rfkill驱动802.11模块驱动、以及WiFI设备自身驱动。2.1 SDIO主机控制器驱动2.1.1 sdio1节点配置由于WiFi通信使用SDIO接口因此需要配置相应的设备树。这里我们使用的是sdio1sdio节点定义在arch/loongarch/boot/dts/loongson-2k0300.dtsisdio1: sdio0x16148000 {#address-cells 2;compatible “loongson,ls2k_sdio_1.2”;reg 0 0x16148000 0 0x8000;interrupt-parent liointc1;interrupts 0 IRQ_TYPE_LEVEL_HIGH; // 32 - 32 0interrupt-names “ls2k_mci_irq”;dma-mask 0xffffffff 0xffffffff;clock-frequency 0 200000000;pinctrl-0 sdio1_pins;pinctrl-names “default”;cap-sd-highspeed;cap-mmc-highspeed;bus-width 4;status “disabled”;};pinmux: pinmux16000490 {…sdio1_pins: pinmux_G100_G105_as_sdio {pinctrl-single,bits 0x18 0x000fff00 0x000fff00;};}sdio1引脚复用信息如下sdio1_pins用于将GPIO100到GPIO105这6个引脚配置为SDIO功能。我们需要修改arch/loongarch/boot/dts/ls2k300_99pi_wifi.dts文件sdio1 {/delete-property/ cd-gpios;status “okay”;cs-gpios gpio 81 GPIO_ACTIVE_HIGH;};这里借用 cs-gpios 属性传入 GPIO81用于控制模组的 WLAN_EN 引脚将其拉高后 WiFi 模组上电/使能。它不是标准 SDIO 协议里的片选信号。2.1.2 源码调整修改drivers/mmc/host/ls2kmci.c中ls2k_mci_probe函数…#include linux/of_gpio.h…static int ls2k_mci_probe(struct platform_device *pdev){hotpug_host host;local_irq_save(flags);if (request_irq(host-irq, ls2k_mci_irq, 0, DRIVER_NAME, host)) {dev_err(pdev-dev, “failed to request mci interrupt.\n”);ret -ENOENT;goto probe_iounmap;}…// 以下为手动添加host-cs_gpio of_get_named_gpio(pdev-dev.of_node, cs-gpios, 0); if (gpio_is_valid(host-cs_gpio)) { gpio_direction_output(host-cs_gpio, 1); printk(successfully %s: Toggled CS GPIO 1 for %s\n, __func__, mmc_hostname(mmc)); } else { printk(Error %s: Cannot get CS GPIO for %s\n, __func__, mmc_hostname(mmc)); } // 以上为手动添加 ......}static noinline voidls2k_mci_send_command(struct ls2k_mci_host *host, struct mmc_command *cmd){u32 ccon;if (cmd-data) { host-complete_what COMPLETION_XFERFINISH_RSPFIN; } else if (cmd-flags MMC_RSP_PRESENT) host-complete_what COMPLETION_RSPFIN; else host-complete_what COMPLETION_CMDSENT; writel(cmd-arg, host-base SDICMDARG); ccon cmd-opcode SDICMDCON_INDEX; ccon | SDICMDCON_SENDERHOST | SDICMDCON_CMDSTART; /* Emmc cmd6 do not need data transfer */ if (host-pdata-version LOONGSON_SDIO_EMMC_VER_1_0 cmd-opcode SD_SWITCH cmd-data) ccon | SDICMDCON_CMD6DATA; if (cmd-flags MMC_RSP_PRESENT) ccon | SDICMDCON_WAITRSP; if (cmd-flags MMC_RSP_136) ccon | SDICMDCON_LONGRSP; // 以下为手动添加 unsigned int val; if (cmd-opcode 53){ val readl(host-base SDIDCON); val | (0x3 24); writel(val, host-base SDIDCON); } // 以上为手动添加 writel(ccon, host-base SDICMDCON);}修改drivers/mmc/host/ls2kmci.h中struct ls2k_mci_host结构体struct ls2k_mci_host {int cs_gpio; //手动添加…}注意必须要修改源码不然内核加载会出现如下错误[ 28.854568] aicbsp: sdio_err:aicwf_sdio_bus_txmsg,1120: send faild:1, 0,0[ 31.862567] cmd timed-out[ 31.865232] tkn[0] flags:0012 result: -4 cmd:1024 - reqcfm(1025)[ 48.509697] audit: type1334 audit(1721825419.905:9): prog-id10 opUNLOAD2.2 WiFi设备驱动WiFI设备自身驱动一般都是由WiFi芯片厂家提供比如WiFi芯片厂商瑞昱、博通这部分是标准的基本不用修改不管是NXP、Rockchip、全志、龙芯等平台都是使用这一套代码。2.2.1 源码AIC8800的驱动源码可以从多个渠道获取包括芯片厂商提供的官方版本、社区维护的版本以及各大设备厂商定制化的版本。这里我们使用久久派定制化的版本这个版本适配的是linux 4.19版本的内核因此需要进行调整这个代码我做了linux 6.12版本的适配源码位于《https://gitee.com/zyly2033/loongson_2k300_lib/tree/master/driver/wifi》zhengyangubuntu:/opt/2k0300/loongson_2k300_lib/driver/wifi$ ls -ldrwxrwxrwx 5 zhengyang zhengyang 4096 5月 8 17:10 aic8800drwxrwxr-x 2 zhengyang zhengyang 4096 5月 8 16:42 firmware其中aic8800目录下存放的就是驱动源码firmware目录下存放着安装驱动时依赖的固件。当然如果有兴趣可以尝试从gitHub获取社区维护的驱动源码这个版本编译错误比较多改动比较多git clone https://github.com/goecho/aic8800_linux_drvier.git2.2.2 编译首次编译尝试zhengyangubuntu:/opt/2k0300/loongson_2k300_lib/driver/$ cd wifi/aic8800zhengyangubuntu:/opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800$ make cleanzhengyangubuntu:/opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800$ make…LD [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_fdrv/aic8800_fdrv.oMODPOST /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/Module.symversCC [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_btlpm/aic8800_btlpm.mod.oLD [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_btlpm/aic8800_btlpm.koCC [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_fdrv/aic8800_fdrv.mod.oLD [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_fdrv/aic8800_fdrv.koCC [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_bsp/aic8800_bsp.mod.oLD [M] /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_bsp/aic8800_bsp.komake[1]: 离开目录“/opt/2k0300/build-2k0300/workspace/linux-6.12”成功后会生成三个 .ko 文件aic8800_bsp/aic8800_bsp.ko这是底层BSP/总线支撑模块主要负责AIC8800芯片的底层通信、SDIO/USB传输接口、固件下载、芯片初始化、寄存器访问、电源/复位等基础能力通常WLAN主驱动会依赖它aic8800_fdrv/aic8800_fdrv.ko 这是 WiFi 功能主驱动负责注册无线网卡、对接 Linux cfg80211/nl80211、创建 wlan0 这类网络接口处理扫描、连接、AP 模式、收发包、加密、信道切换、雷达检测等 WiFi 功能也就是真正用来跑 WiFi 的核心模块aic8800_btlpm/aic8800_btlpm.ko这是蓝牙低功耗/休眠管理模块BT LPM 大概率是 Bluetooth Low Power Mode。主要负责蓝牙侧的休眠唤醒、GPIO wake、hostwake/btwake、/proc/bluetooth/sleep 相关控制等。拷贝到install目录cp /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/modules.order /opt/2k0300/loongson_2k300_lib/driver/wifi/installcp /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_btlpm/aic8800_btlpm.ko /opt/2k0300/loongson_2k300_lib/driver/wifi/installcp /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_fdrv/aic8800_fdrv.ko /opt/2k0300/loongson_2k300_lib/driver/wifi/installcp /opt/2k0300/loongson_2k300_lib/driver/wifi/aic8800/aic8800_bsp/aic8800_bsp.ko /opt/2k0300/loongson_2k300_lib/driver/wifi/installmodules.order 记录模块构建/安装顺序。2.3 其它驱动模块配置进入内核配置界面zhengyangubuntu:~$ cd /opt/2k0300/build-2k0300/workspace/linux-6.12zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ source …/set_env.sh make menuconfig2.3.1 IEEE 802.11驱动需要配置内核支持IEEE 802.11驱动[] Networking support —-- Wireless —cfg80211 - wireless configuration API默认会生成配置CONFIG_CFG80211m实际上arch/loongarch/configs/loongson_2k300_defconfig文件已经配置了。2.3.2 rfkill驱动需要配置内核支持rfkill驱动rfkill 是 Linux 内核提供的 RF 开关框架用于统一管理 WiFi、蓝牙等无线设备的启用/禁用状态。具体的上电、复位、唤醒 GPIO 仍然需要由平台设备树、板级代码或具体驱动完成。内核配置如下[] Networking support —[M] RF switch subsystem support —[] RF switch input support默认会生成配置CONFIG_RFKILLmCONFIG_RFKILL_INPUTy实际上arch/loongarch/configs/loongson_2k300_defconfig文件已经配置了。2.3.3 编译内核ubuntu宿主机重新编译内核zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ source …/set_env.sh make uImage -j$(nproc)2.3.4 拷贝驱动我们将驱动拷贝到/opt/2k0300/loongson_2k300_lib/driver/wifi/install目录zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ cp /opt/2k0300/build-2k0300/workspace/linux-6.12/net/wireless/cfg80211.ko /opt/2k0300/loongson_2k300_lib/driver/wifi/installzhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ cp /opt/2k0300/build-2k0300/workspace/linux-6.12/net/rfkill/rfkill.ko /opt/2k0300/loongson_2k300_lib/driver/wifi/install回到顶部三、测试3.1 烧录设备树3.1.1 编译设备树如果需要单独编译设备树在linux内核根目录执行如下命令zhengyangubuntu:~$ cd /opt/2k0300/build-2k0300/workspace/linux-6.12zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ source …/set_env.sh make dtbs V13.1.2 更新设备树将设备树拷贝到久久派的/opt目录zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ scp arch/loongarch/boot/dts/ls2k300_99pi_wifi.dtb root172.23.17.235:/opt在久久派使用dd命令烧写设备树到SPI Nor Flash的dtb分区[rootLS-GD opt]# dd if/opt/ls2k300_99pi_wifi.dtb of/dev/mtdblock3 bs1221240 records in221240 records out22124 bytes (22 kB, 22 KiB) copied, 0.500342 s, 44.2 kB/s[rootLS-GD opt]# reboot3.2 烧录内核由于我们在前面的环节修改了SDIO主机控制器驱动源码因此需要重新编译烧录内核。3.2.1 编译内核ubuntu宿主机重新编译内核zhengyangubuntu:/opt/2k0300/build-2k0300/workspace/linux-6.12$ source …/set_env.sh make uImage -j$(nproc)3.2.2 烧录内核久久派烧录内核即将编译生成的uImage内核镜像拷贝到/boot目录[rootLS-GD ~]# scp zhengyang172.23.16.99:/opt/2k0300/build-2k0300/workspace/linux-6.12/arch/loongarch/boot/uImage /boot/[rootLS-GD ~]# reboot3.3 安装WiFi设备驱动将我们整个WiFi模块从宿主机拷贝到久久派zhengyangubuntu:/opt/2k0300/loongson_2k300_lib/driver/wifi$ scp -r /opt/2k0300/loongson_2k300_lib/driver/wifi root172.23.17.235:/opt久久派执行[rootLS-GD opt]# ls -l wifi/total 6-rw-r–r-- 1 root root 2527 Jul 25 04:08 README.mddrwxr-xr-x 5 root root 1024 Jul 25 04:08 aic8800drwxr-xr-x 2 root root 1024 Jul 25 04:08 firmwaredrwxr-xr-x 2 root root 1024 Jul 25 04:08 install3.3.1 启动加载如果希望系统启动自动加载该驱动我们需要将驱动拷贝到/usr/lib/modules/6.12.0.lsgd/内核启动的时候使用/sbin/modprobe加载/lib/modules/{uname -r}下面的模块modules.order 只记录模块构建/安装顺序真正决定 modprobe 自动加载依赖的是 depmod 生成的 modules.dep。[rootLS-GD ~]# cd /usr/lib/modules/$(uname -r)/[rootLS-GD 6.12.0.lsgd]# cp /opt/wifi/install/* /usr/lib/modules/6.12.0.lsgd[rootLS-GD 6.12.0.lsgd]# ls -l-rw-r–r-- 1 root root 186872 Jul 24 21:20 aic8800_bsp.ko-rw-r–r-- 1 root root 12704 Jul 24 21:20 aic8800_btlpm.ko-rw-r–r-- 1 root root 890872 Jul 24 21:20 aic8800_fdrv.ko-rw-r–r-- 1 root root 831752 Jul 24 21:20 cfg80211.ko-rw-r–r-- 1 root root 23312 Jul 24 2024 encoder.ko-rw-r–r-- 1 root root 237 Jul 24 21:20 modules.order-rw-r–r-- 1 root root 63880 Jul 24 21:20 rfkill.ko需要在加载模块之前建立该模块的依赖关系也即必须用depmod来更新一下/lib/modules/$(uname -r)/modules.dep文件[rootLS-GD 6.12.0.lsgd]# depmod -a此时生成modules.depencoder.ko:rfkill.ko:cfg80211.ko: rfkill.koaic8800_bsp.ko:aic8800_btlpm.ko: aic8800_bsp.ko rfkill.koaic8800_fdrv.ko: cfg80211.ko aic8800_bsp.ko rfkill.ko3.3.2 拷贝固件我们需要在久久派开发板创建目录[rootLS-GD 6.12.0.lsgd]# mkdir -p /lib/firmware/aic8800_fw/SDIO/aic8800D80路径必须正确如需将固件放在其它路径需要修改驱动源码。把这些文件放进去[rootLS-GD 6.12.0.lsgd]# cp -r /opt/wifi/firmware/* /lib/firmware/aic8800_fw/SDIO/aic8800D80[rootLS-GD ~]# ls -l /lib/firmware/aic8800_fw/SDIO/aic8800D80-rw-r–r-- 1 root root 2683 Jul 24 20:54 aic_userconfig_8800d80.txt-rw-r–r-- 1 root root 331348 Jul 24 20:54 fmacfw_8800d80_u02.bin-rw-r–r-- 1 root root 333388 Jul 24 20:54 fmacfwbt_8800d80_u02.bin-rw-r–r-- 1 root root 1708 Jul 24 20:54 fw_adid_8800d80_u02.bin-rw-r–r-- 1 root root 30040 Jul 24 20:54 fw_patch_8800d80_u02.bin-rw-r–r-- 1 root root 1048 Jul 24 20:54 fw_patch_table_8800d80_u02.bin-rw-r–r-- 1 root root 237206 Jul 24 20:54 lmacfw_rf_8800d80_u02.bin3.4 加载验证3.4.1 内核启动日志[rootLS-GD ~]# dmesg | grep -Ei “mmc|sdio|aic|wifi”[ 0.000000] DMI: Loongson LS2K300/LS2K300-99PI-WIFI, BIOS 2022.04-g96038f5a-dirty 04/01/2022[ 0.000000] Kernel command line: earlycon fbconlogo-pos:center fbconlogo-count:1 consolettyS0,115200 rw noinitrd init/sbin/init rootfstypeext4 rootwait root/dev/mmcblk0p1 mtdpartsspi0.0:924k(uboot),32k(uboot_env),4k(bdinfo),52k(dtb),4k(bdinfo_e),8k(ddr_context) fbconrotate:0 paneldefault bp_start0x900000000f030400 board_nameLS2K300-99PI-WIFI[ 0.000000] Unknown kernel command line parameters “paneldefault board_nameLS2K300-99PI-WIFI”, will be passed to user space.[ 1.272151] ls2k_sdio 16140000.sdio: Use exclusive dma engine.[ 1.279687] Error ls2k_mci_probe: Cannot get CS GPIO for mmc0[ 1.713771] ls2k_sdio 16148000.sdio: Use exclusive dma engine.[ 1.727677] successfully ls2k_mci_probe: Toggled CS GPIO 1 for mmc1[ 6.373952] mmc1: new high speed SDIO card at address 42f1[ 6.773970] Waiting for root device /dev/mmcblk0p1…[ 7.036200] mmc0: new high speed MMC card at address 0001[ 7.042381] mmcblk0: mmc0:0001 08A391 7.28 GiB[ 7.049301] mmcblk0: p1[ 7.053721] mmcblk0boot0: mmc0:0001 08A391 4.00 MiB[ 7.060118] mmcblk0boot1: mmc0:0001 08A391 4.00 MiB[ 7.154435] EXT4-fs (mmcblk0p1): mounted filesystem 77fabf5f-333f-4f1b-9c30-f01c7422efda r/w with ordered data mode. Quota mode: none.[ 7.194114] board_nameLS2K300-99PI-WIFI[ 9.836662] EXT4-fs (mmcblk0p1): re-mounted 77fabf5f-333f-4f1b-9c30-f01c7422efda r/w. Quota mode: none.[ 18.506079] aic8800_bsp: loading out-of-tree module taints kernel.[ 18.710695] aicbsp_init[ 18.860602] aicbsp_resv_mem_init[ 22.844244] aicbsp: aicbsp_set_subsys, subsys: AIC_WIFI, state to: 1[ 22.917591] aicbsp: aicbsp_set_subsys, power state change to 1 dure to AIC_WIFI[ 22.994589] aicbsp: aicbsp_platform_power_on[ 23.187483] aicbsp: aicbsp_sdio_probe:1 vid:0xC8A1 did:0x0082[ 23.244053] aicbsp: aicbsp_sdio_probe:2 vid:0xC8A1 did:0x0182[ 23.305583] aicbsp: aicbsp_sdio_probe after replace:1[ 23.361598] AICWFDBG(LOGINFO) aicwf_sdio_chipmatch USE AIC8800D80[ 23.424610] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 23.493585] aicbsp: aicwf_sdio_reg_init[ 23.548832] AICWFDBG(LOGINFO) aicbsp: aicbsp_driver_fw_init, chip rev: 7[ 23.617611] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_patch_table_8800d80_u02.bin[ 23.864887] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_adid_8800d80_u02.bin[ 24.091587] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_patch_8800d80_u02.bin[ 24.657893] aicbt_patch_table_load bt btmode[3]:5[ 24.671091] aicbt_patch_table_load bt uart_baud[3]:1500000[ 24.679417] aicbt_patch_table_load bt uart_flowctrl[3]:1[ 24.686002] aicbt_patch_table_load bt lpm_enable[3]:0[ 24.692140] aicbt_patch_table_load bt tx_pwr[3]:28463[ 24.755738] aicbsp: bt patch version: - Mar 07 2024 14:29:05 - git f94a3e4[ 24.785752] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fmacfw_8800d80_u02.bin[ 25.279926] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 25.286544] aicsdio: aicwf_sdio_reg_init[ 25.296102] aicbsp: aicbsp_resv_mem_alloc_skb, alloc resv_mem_txdata succuss, id: 0, size: 98304[ 25.305423] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 25.311997] aicbsp: sdio_err:aicwf_sdio_bus_pwrctl,1384: bus down[ 25.319135] AICWFDBG(LOGINFO) aicwf_prealloc_txq_alloc size is diff will to be kzalloc[ 25.327539] AICWFDBG(LOGINFO) aicwf_prealloc_txq_alloc txq kzalloc successful[ 25.356965] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_42[ 25.362897] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_58[ 25.368850] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_106[ 25.377066] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_122[ 25.383235] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_138[ 25.389337] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_155[rootLS-GD ~]# dmesg…[ 13.050727] cfg80211: Loading compiled-in X.509 certificates for regulatory database[ 13.284832] Loaded X.509 cert ‘sforshee: 00b28ddf47aef9cea7’[ 13.308749] Loaded X.509 cert ‘wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600’[ 18.506079] aic8800_bsp: loading out-of-tree module taints kernel.[ 18.710695] aicbsp_init[ 18.860602] aicbsp_resv_mem_init[ 22.844244] aicbsp: aicbsp_set_subsys, subsys: AIC_WIFI, state to: 1[ 22.917591] aicbsp: aicbsp_set_subsys, power state change to 1 dure to AIC_WIFI[ 22.994589] aicbsp: aicbsp_platform_power_on[ 23.187483] aicbsp: aicbsp_sdio_probe:1 vid:0xC8A1 did:0x0082[ 23.244053] aicbsp: aicbsp_sdio_probe:2 vid:0xC8A1 did:0x0182[ 23.305583] aicbsp: aicbsp_sdio_probe after replace:1[ 23.361598] AICWFDBG(LOGINFO) aicwf_sdio_chipmatch USE AIC8800D80[ 23.424610] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 23.493585] aicbsp: aicwf_sdio_reg_init[ 23.548832] AICWFDBG(LOGINFO) aicbsp: aicbsp_driver_fw_init, chip rev: 7[ 23.617611] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_patch_table_8800d80_u02.bin[ 23.766693] file md5:0c9bf9c9c10f7a90a22a4c35fa58c967[ 23.820750] rwnx_plat_bin_fw_upload_android[ 23.864887] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_adid_8800d80_u02.bin[ 23.975753] file md5:f546881a81b960d89a672578eb45a809[ 24.045835] rwnx_plat_bin_fw_upload_android[ 24.091587] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fw_patch_8800d80_u02.bin[ 24.302329] file md5:35d137b8a76daaeb4f5034df8e15bcde[ 24.657893] aicbt_patch_table_load bt btmode[3]:5[ 24.671091] aicbt_patch_table_load bt uart_baud[3]:1500000[ 24.679417] aicbt_patch_table_load bt uart_flowctrl[3]:1[ 24.686002] aicbt_patch_table_load bt lpm_enable[3]:0[ 24.692140] aicbt_patch_table_load bt tx_pwr[3]:28463[ 24.755738] aicbsp: bt patch version: - Mar 07 2024 14:29:05 - git f94a3e4[ 24.771207] rwnx_plat_bin_fw_upload_android[ 24.785752] rwnx_load_firmware :firmware path /lib/firmware/aic8800_fw/SDIO/aic8800D80/fmacfw_8800d80_u02.bin[ 24.834359] file md5:13e6f0e58aae342d260d8672ab61c31f[ 25.245654] rd_version_val06090101[ 25.279926] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 25.286544] aicsdio: aicwf_sdio_reg_init[ 25.296102] aicbsp: aicbsp_resv_mem_alloc_skb, alloc resv_mem_txdata succuss, id: 0, size: 98304[ 25.305423] aicbsp: aicbsp_get_feature, set FEATURE_SDIO_CLOCK 150 MHz[ 25.311997] aicbsp: sdio_err:aicwf_sdio_bus_pwrctl,1384: bus down[ 25.319135] AICWFDBG(LOGINFO) aicwf_prealloc_txq_alloc size is diff will to be kzalloc[ 25.327539] AICWFDBG(LOGINFO) aicwf_prealloc_txq_alloc txq kzalloc successful[ 25.356965] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_42[ 25.362897] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_58[ 25.368850] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_106[ 25.377066] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_122[ 25.383235] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_138[ 25.389337] AICWFDBG(LOGERROR) invalid cmd: lvl_adj_5g_chan_155[ 26.015672] ieee80211 phy0: HT supp 1, VHT supp 1, HE supp 1[ 26.025301] ieee80211 phy0:********************************************************* CAUTION: USING PERMISSIVE CUSTOM REGULATORY RULES *********************************************************[ 26.441089] rwnx_virtual_interface_add: 10, p2p-dev-wlan0[ 26.453592] rwnx_virtual_interface_add, ifnamep2p-dev-wlan0, wdev000000006bb82764, vif_idx1[ 26.471583] p2p dev addr1c 79 2d 96 85 74[ 26.518513] P2P interface started3.4.2 查看sdio设备信息列出Linux内核当前通过SDIO总线检测到的所有设备[rootLS-GD ~]# ls /sys/bus/sdio/devicesmmc1:42f1:1 mmc1:42f1:2其中mmc1代表设备连接在第二个 MMC/SDIO 控制器上这符合预期42f1这是识别出的 厂商ID (VID)1 和 2这是设备ID (DID)并且同一个设备在 mmc1 总线下有两个功能function。AIC8800D40 是一个 WiFi 蓝牙 二合一模组。因此一个典型的配置是Function 1 (这里的 :1)分配给 WiFi 功能。Function 2 (这里的 :2)分配给 蓝牙 功能。所以看到两个功能出现通常是模组工作正常的标志。3.4.3 连接wifi先运行ifconfig查看网络设备信息[rootLS-GD ~]# ifconfigeth0 Link encap:Ethernet HWaddr D6:EC:6F:2F:22:C4inet addr:172.23.17.235 Bcast:172.23.127.255 Mask:255.255.128.0inet6 addr: fe80::3921:fc47:7381:730d/64 Scope:LinkUP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1RX packets:457 errors:0 dropped:377 overruns:0 frame:0TX packets:113 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:32940 (32.1 KiB) TX bytes:29321 (28.6 KiB)Interrupt:147 Base address:0x8000lo Link encap:Local Loopbackinet addr:127.0.0.1 Mask:255.0.0.0inet6 addr: ::1/128 Scope:HostUP LOOPBACK RUNNING MTU:65536 Metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)wlan0 Link encap:Ethernet HWaddr 1C:79:2D:96:85:75UP BROADCAST MULTICAST MTU:1500 Metric:1RX packets:0 errors:0 dropped:0 overruns:0 frame:0TX packets:0 errors:0 dropped:0 overruns:0 carrier:0collisions:0 txqueuelen:1000RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)可以看到有一个有线网卡ip地址为172.23.17.235网卡名为eth0还有一个无线网卡网卡名为wlan0配置无线网nmcli dev wifi connect “wifi名称” password “wifi密码” ifname wlan0例如我要连接的wifi是400密码是12345678则执行以下命令[rootLS-GD ~]# nmcli dev wifi connect “400” password “12345678” ifname wlan0Device ‘wlan0’ successfully activated with ‘5db07e53-0afd-4e16-ab9b-f2b80ab49a84’.3.4.4 固定IP可选nmcli connection modify “wifi名称” ipv4.method manual ipv4.addresses “192.168.1.100/24” ipv4.gateway “192.168.1.1” ipv4.dns “8.8.8.8,8.8.4.4”其中IP地址后的/24是CIDR表示法将子网掩码的四个数转为2进制表示有多少个连续的1 255.255.255.0有三个2558个1所以是24固定完后重新连接nmcli connection up “wifi名称”如果想再设置为自动获取nmcli connection modify “wifi名称” ipv4.method auto设置完后重新连接nmcli connection up “wifi名称”3.4. 5 nmcli其他用法扫描无线网nmcli device wifi list启用网络设备nmcli device connect wlan0禁用网络设备sudo nmcli device disconnect wlan0查看网络连接nmcli connection show激活网络连接nmcli connection up “wifi名称”停用网络连接nmcli connection down “wifi名称”删除网络连接:nmcli connection delete “wifi名称”