硬件平台a33
系统android
wifi:ap6212a
从内核日志看到模块能加载识别到fw_bcm43438a1.bin ,但是nvram加载的配置是nvram_ap6212.txt，虽然能正常工作，但是对比了一下nvram_ap6212.txt 和nvram_ap6212a.txt还是有差异的
内核日志：
[ 26.488791] [dhd] sdioh_attach: set sd_f2_blocksize 256
[ 26.494959] [dhd] sdioh_attach: sd clock rate = 50000000
[ 26.501230] [dhd] dhdsdio_probe : no mutex held
[ 26.506381] [dhd] dhdsdio_probe : set mutex lock
[ 26.511786] [dhd] F1 signature read @0x18000000=0x1541a9a6
[ 26.520666] [dhd] F1 signature OK, socitype:0x1 chip:0xa9a6 rev:0x1 pkg:0x4
[ 26.529455] [dhd] DHD: dongle ram size is set to 524288(orig 524288) at 0x0
[ 26.538303] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 7, size 26016
[ 26.546243] [dhd] dhd_conf_set_chiprev : devid=0xa9a6, chip=0xa9a6, chiprev=1
[ 26.554445] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 0, size 10320
[ 26.564263] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 5, size 65536
[ 26.574767] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 19, size 65652
[ 26.582815] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 20, size 262144
[ 26.591063] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 22, size 65536
[ 26.599175] [dhd] dhd_attach(): thread:dhd_watchdog_thread:8a4 started
[ 26.606930] [dhd] dhd_attach(): thread:dhd_dpc:8a5 started
[ 26.613481] [dhd] dhd_attach(): thread:dhd_rxf:8aa started
[ 26.619645] [dhd] dhd_deferred_work_init: work queue initialized
[ 26.626464] [dhd] dhd_tcpack_suppress_set: TCP ACK Suppress mode 0 -> mode 2
[ 26.634387] [dhd] dhd_tcpack_suppress_set: TCPACK_INFO_MAXNUM=4, TCPDATA_INFO_MAXNUM=4
[ 26.643438] [dhd] sdioh_cis_read: func_cis_ptr[0]=0x1070
[ 26.661258] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 1, size 10300
[ 26.669071] [dhd] STATIC-MSG) dhd_wlan_mem_prealloc : section 2, size 65536
[ 26.677001] [dhd] dhdsdio_probe_init: making DHD_BUS_DOWN
[ 26.683472] [dhd] wifi_platform_get_mac_addr
[ 26.688517] audit: type=1400 audit(1716882474.400:377): avc: denied { read } for pid=1588 comm="android.hardwar" name="aura_mac.txt" dev="mmcblk0p11" ino=9 scontext=u:r:hal_wifi_default:s0 tcontext=u:object_r:vfat:s0 tclass=file permissive=1
[ 26.712797] audit: type=1400 audit(1716882474.423:378): avc: denied { open } for pid=1588 comm="android.hardwar" path="/private/ULI/factory/aura_mac.txt" dev="mmcblk0p11" ino=9 scontext=u:r:hal_wifi_default:s0 tcontext=u:object_r:vfat:s0 tclass=file permissive=1
[ 26.739466] [dhd] Dongle Host Driver, version 101.10.361.33 (wlan=r892223-20230607-2)\x0adrivers/net/wireless/bcmdhd compiled on May 9 2024 at 14:10:01\x0a
[ 26.761310] [dhd] Register interface [wlan0] MAC: 04:c2:9b:0b:be:9d\x0a
[ 26.772027] [dhd] [wlan0] wl_android_wifi_off : in g_wifi_on=1, on_failure=1
[ 26.784655] [dhd] dhd_bus_devreset: == Power OFF ==
[ 26.792231] [dhd] dhd_bus_stop: making DHD_BUS_DOWN
[ 26.797832] [dhd] dhd_bus_devreset: making dhdpub up FALSE
[ 26.804995] [dhd] dhd_txglom_enable: enable 0
[ 26.809972] [dhd] dhd_bus_devreset: making DHD_BUS_DOWN
[ 26.816260] [dhd] wifi_platform_set_power = 0, delay: 0 msec
[ 26.822672] [dhd] ======== PULL WL_REG_ON(-1) LOW! ========
[ 26.829514] [dhd] [wlan0] wl_android_wifi_off : out
[ 26.835053] [dhd] dhdsdio_probe : mutex is released.
[ 26.841396] [dhd] _dhd_module_init: Exit err=0
[ 26.852181] [dhd] dhd_pri_open : no mutex held
[ 26.857224] [dhd] dhd_pri_open : set mutex lock
[ 26.862395] [dhd] [wlan0] dhd_open : Enter
[ 26.867128] [dhd] Dongle Host Driver, version 101.10.361.33 (wlan=r892223-20230607-2)\x0adrivers/net/wireless/bcmdhd compiled on May 9 2024 at 14:10:01\x0a
[ 26.885342] [dhd] dhd_open: ######### called for ifidx=0 #########
[ 26.892307] [dhd] [wlan0] wl_android_wifi_on : in g_wifi_on=0
[ 26.898820] [dhd] wifi_platform_set_power = 1, delay: 200 msec
[ 26.905426] [dhd] ======== PULL WL_REG_ON(-1) HIGH! ========
[ 26.912109] sunxi-wlan soc@1c00000:wlan: check wlan wlan_power voltage: 3300000
[ 26.920610] sunxi-wlan soc@1c00000:wlan: check wlan io_regulator voltage: 3300000
[ 27.254520] [dhd] sdio_sw_reset: call mmc_hw_reset
[ 27.260004] sunxi-mmc sdc1: sdc set ios:clk 0Hz bm PP pm OFF vdd 0 width 1 timing LEGACY(SDR12) dt B
[ 27.278701] sunxi-mmc sdc1: sdc set ios:clk 0Hz bm PP pm UP vdd 21 width 1 timing LEGACY(SDR12) dt B
[ 27.298048] sunxi-mmc sdc1: no vqmmc,Check if there is regulator
[ 27.320656] sunxi-mmc sdc1: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
[ 27.347654] sunxi-mmc sdc1: smc 1 p1 err, cmd 52, RTO !!
[ 27.355974] sunxi-mmc sdc1: smc 1 p1 err, cmd 52, RTO !!
[ 27.362618] sunxi-mmc sdc1: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
[ 27.376225] sunxi-mmc sdc1: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
[ 27.391003] sunxi-mmc sdc1: smc 1 p1 err, cmd 8, RTO !!
[ 27.410920] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 27.419102] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 27.430284] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 27.442063] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 27.455857] mmc1: queuing unknown CIS tuple 0x81 (9 bytes)
[ 27.573243] sunxi-mmc sdc1: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing SD-HS(SDR25) dt B
[ 27.584573] sunxi-mmc sdc1: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 1 timing SD-HS(SDR25) dt B
[ 27.596241] sunxi-mmc sdc1: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 4 timing SD-HS(SDR25) dt B
[ 27.608599] [dhd] sdioh_start: set sd_f2_blocksize 256
[ 27.615291] [dhd] dhd_bus_devreset: == Power ON ==
[ 27.621812] [dhd] F1 signature read @0x18000000=0x1541a9a6
[ 27.635071] [dhd] F1 signature OK, socitype:0x1 chip:0xa9a6 rev:0x1 pkg:0x4
[ 27.644918] [dhd] DHD: dongle ram size is set to 524288(orig 524288) at 0x0
[ 27.654212] [dhd] dhd_bus_devreset: making DHD_BUS_DOWN
[ 27.660189] [dhd] dhdsdio_probe_init: making DHD_BUS_DOWN
[ 27.666803] [dhd] dhd_conf_set_path_params : Final fw_path=/vendor/modules/fw_bcm43438a1.bin
[ 27.676332] [dhd] dhd_conf_set_path_params : Final nv_path=/system/vendor/modules/nvram_ap6212.txt
[ 27.685667] audit: type=1400 audit(1716882475.396:379): avc: denied { sigchld } for pid=1657 comm="touch-watcher.s" scontext=u:object_r:zygote_exec:s0 tcontext=u:object_r:zygote_exec:s0 tclass=process permissive=1
[ 27.686269] audit: type=1400 audit(1716882475.396:380): avc: denied { use } for pid=1657 comm="touch-watcher.s" path="/dev/null" dev="tmpfs" ino=3878 scontext=u:object_r:zygote_exec:s0 tcontext=u:r:init:s0 tclass=fd permissive=1
[ 27.686316] audit: type=1400 audit(1716882475.396:381): avc: denied { write } for pid=1657 comm="touch-watcher.s" path="/dev/null" dev="tmpfs" ino=3878 scontext=u:object_r:zygote_exec:s0 tcontext=u:object_r:null_device:s0 tclass=chr_file permissive=1
[ 27.686460] audit: type=1400 audit(1716882475.396:382): avc: denied { search } for pid=1657 comm="touch-watcher.s" name="/" dev="mmcblk0p11" ino=1 scontext=u:object_r:zygote_exec:s0 tcontext=u:object_r:vfat:s0 tclass=dir permissive=1
[ 27.783053] [dhd] dhd_conf_set_path_params : Final clm_path=/vendor/modules/clm_bcm43438a1.blob
[ 27.793123] [dhd] dhd_conf_set_path_params : Final conf_path=/system/vendor/modules/config_ap6212.txt
[ 27.804683] [dhd] dhd_get_download_buffer: Open image file failed /system/vendor/modules/config_ap6212.txt
[ 27.816135] [dhd] dhd_conf_read_config : Ignore config file /system/vendor/modules/config_ap6212.txt
[ 27.832171] [dhd] dhd_os_open_image1: /vendor/modules/fw_bcm43438a1.bin (422837 bytes) open success
[ 27.970379] [dhd] dhd_os_open_image1: /system/vendor/modules/nvram_ap6212.txt (993 bytes) open success
[ 27.982570] [dhd] #AP6212_NVRAM_V1.0.2_20191121\x0d
[ 27.990595] [dhd] dhdsdio_write_vars: Download, Upload and compare of NVRAM succeeded.
[ 28.075452] [dhd] dhd_bus_init: enable 0x06, ready 0x06 (waited 0us)
[ 28.092029] [dhd] wlc_ver_major 4, wlc_ver_minor 1
[ 28.100655] [dhd] dhd_preinit_ioctls: preinit_status IOVAR not supported, use legacy preinit
[ 28.110291] [dhd] dhd_tcpack_suppress_set: TCP ACK Suppress mode 2 -> mode 0
[ 28.118166] [dhd] dhd_tcpack_suppress_set: TCPACK_INFO_MAXNUM=4, TCPDATA_INFO_MAXNUM=4
[ 28.127626] [dhd] wifi_platform_get_mac_addr
[ 28.133226] [dhd] dhd_legacy_preinit_ioctls: use firmware generated mac_address 04:c2:9b:0b:be:9d
[ 28.143230] [dhd] dhd_apply_default_clm: Ignore clm file /vendor/modules/clm_bcm43438a1.blob
[ 28.157618] [dhd] Firmware up: op_mode=0x0005, MAC=04:c2:9b:0b:be:9d
[ 28.165476] [dhd] Disable tdls_auto_op failed. -1
[ 28.173637] [dhd] dhd_legacy_preinit_ioctls Set scancache failed -23
[ 28.183688] [dhd] dhd_legacy_preinit_ioctls: event_log_max_sets: 31 ret: -23
[ 28.194803] [dhd] arp_enable:1 arp_ol:0
[ 28.212388] [dhd] Driver: 101.10.361.33 (wlan=r892223-20230607-2)\x0a[dhd] Firmware: wl0: Jan 14 2022 15:16:34 version 7.45.96.123 (g0180acf3) FWID 01-457251af es7.c5.n4.a3\x0a[dhd] CLM: 7.11.15 (2014-05-26 10:53:55)
[ 28.238088] [dhd] dhd_txglom_enable: enable 1
[ 28.243193] [dhd] dhd_conf_set_txglom_params : txglom_mode=copy
[ 28.249969] [dhd] dhd_conf_set_txglom_params : txglomsize=36, deferred_tx_len=0
[ 28.258464] [dhd] dhd_conf_set_txglom_params : txinrx_thres=-1, dhd_txminmax=1
[ 28.266500] [dhd] dhd_conf_set_txglom_params : tx_max_offset=0, txctl_tmo_fix=300
[ 28.274861] [dhd] dhd_conf_get_disable_proptx : fw_proptx=1, disable_proptx=-1
[ 28.284522] [dhd] dhd_wlfc_hostreorder_init(): successful bdcv2 tlv signaling, 64
[ 28.295746] [dhd] dhd_pno_init: Support Android Location Service
[ 28.304990] [dhd] dhd_wl_ioctl_get_intiovar: get int iovar wnm_bsstrans_resp failed, ERR -23
[ 28.316103] [dhd] failed to get wnm_bsstrans_resp
[ 28.322874] [dhd] failed to set WNM capabilities
[ 28.358690] [dhd] dhd_legacy_preinit_ioctls: Failed to get preserve log # !
[ 28.394091] [dhd] dhd_conf_set_country : set country CN, revision 0
[ 28.404311] [dhd] dhd_conf_set_country : Country code: CN (CN/0)
[ 28.418057] [dhd] CONFIG-ERROR) dhd_conf_set_intiovar : ampdu_mpdu setting failed -29
[ 28.427496] [dhd] [wlan0] wl_android_wifi_on : Success
[ 28.462432] [dhd] CFG80211-ERROR) __wl_update_wiphybands : error reading vhtmode (-23)
[ 28.473781] [dhd] CFG80211-ERROR) __wl_update_wiphybands : error get bw_cap 6g (-13)
[ 28.496174] [dhd] CFG80211-ERROR) init_roam_cache : roamscan_mode iovar failed. -23
[ 28.505609] [dhd] CFG80211-ERROR) wl_cfg80211_up : Failed to enable RCC.
[ 28.514893] [dhd] [wlan0] dhd_open : Exit ret=0
[ 28.520644] [dhd] [wlan0] dhd_pri_open : tx queue started
[ 28.526727] [dhd] dhd_pri_open : mutex is released.
[ 28.591116] init: starting service 'wpa_supplicant'...
[ 28.599845] init: Created socket '/dev/socket/wpa_wlan0', mode 660, user 1010, group 1010
[ 28.801936] [dhd] P2P interface registered
[ 28.817711] [dhd] WLC_E_IF: NO_IF set, event Ignored\x0d
[ 28.825435] [dhd] P2P interface started
[ 28.862224] [dhd] Random MAC OUI to be used - da:1:19
[ 28.885774] [dhd] net_os_enable_packet_filter: val = 0
[ 28.893666] [dhd] net_os_rxfilter_add_remove: add_remove = 0, num = 2
[ 28.903356] [dhd] net_os_enable_packet_filter: val = 1
[ 28.911497] [dhd] net_os_enable_packet_filter: val = 0
[ 28.918641] [dhd] net_os_rxfilter_add_remove: add_remove = 0, num = 3
[ 28.929275] [dhd] net_os_enable_packet_filter: val = 1
查看内核代码：
android/longan/kernel/linux-4.9/drivers/net/wireless/bcmdhd/dhd_config.c
typedef struct chip_name_map_t {
uint chip;
uint chiprev;
uint ag_type;
char *chip_name;
char *module_name;
} chip_name_map_t;
/* Map of WLC_E events to connection failure strings */
#define DONT_CARE 9999
const chip_name_map_t chip_name_map[] = {
/* ChipID Chiprev AG ChipName ModuleName */
#ifdef BCMSDIO
{BCM43362_CHIP_ID, 0, DONT_CARE, "bcm40181a0", ""},
{BCM43362_CHIP_ID, 1, DONT_CARE, "bcm40181a2", ""},
{BCM4330_CHIP_ID, 4, FW_TYPE_G, "bcm40183b2", ""},
{BCM4330_CHIP_ID, 4, FW_TYPE_AG, "bcm40183b2_ag", ""},
{BCM43430_CHIP_ID, 0, DONT_CARE, "bcm43438a0", ""},
{BCM43430_CHIP_ID, 1, DONT_CARE, "bcm43438a1", ""},
{BCM43430_CHIP_ID, 2, DONT_CARE, "bcm43436b0", ""},
{BCM43012_CHIP_ID, 1, FW_TYPE_G, "bcm43013b0", ""},
{BCM43012_CHIP_ID, 1, FW_TYPE_AG, "bcm43013c0_ag", ""},
{BCM43012_CHIP_ID, 2, DONT_CARE, "bcm43013c1_ag", ""},
{BCM4334_CHIP_ID, 3, DONT_CARE, "bcm4334b1_ag", ""},
{BCM43340_CHIP_ID, 2, DONT_CARE, "bcm43341b0_ag", ""},
{BCM43341_CHIP_ID, 2, DONT_CARE, "bcm43341b0_ag", ""},
{BCM4324_CHIP_ID, 5, DONT_CARE, "bcm43241b4_ag", ""},
{BCM4335_CHIP_ID, 2, DONT_CARE, "bcm4339a0_ag", ""},
{BCM4339_CHIP_ID, 1, DONT_CARE, "bcm4339a0_ag", ""},
{BCM4345_CHIP_ID, 6, DONT_CARE, "bcm43455c0_ag", ""},
{BCM43454_CHIP_ID, 6, DONT_CARE, "bcm43455c0_ag", ""},
{BCM4345_CHIP_ID, 9, DONT_CARE, "bcm43456c5_ag", ""},
{BCM43454_CHIP_ID, 9, DONT_CARE, "bcm43456c5_ag", ""},
{BCM4354_CHIP_ID, 1, DONT_CARE, "bcm4354a1_ag", ""},
{BCM4354_CHIP_ID, 2, DONT_CARE, "bcm4356a2_ag", ""},
{BCM4356_CHIP_ID, 2, DONT_CARE, "bcm4356a2_ag", ""},
{BCM4371_CHIP_ID, 2, DONT_CARE, "bcm4356a2_ag", ""},
{BCM43569_CHIP_ID, 3, DONT_CARE, "bcm4358a3_ag", ""},
{BCM4359_CHIP_ID, 5, DONT_CARE, "bcm4359b1_ag", ""},
{BCM4359_CHIP_ID, 9, DONT_CARE, "bcm4359c0_ag", ""},
{BCM43751_CHIP_ID, 1, DONT_CARE, "bcm43751a1_ag", ""},
{BCM43751_CHIP_ID, 2, DONT_CARE, "bcm43751a2_ag", ""},
{BCM43752_CHIP_ID, 1, DONT_CARE, "bcm43752a1_ag", ""},
{BCM43752_CHIP_ID, 2, DONT_CARE, "bcm43752a2_ag", ""},
#endif
......
};
//匹配代码，根据探测到的sdio devices_id来匹配
const chip_name_map_t*
dhd_conf_match_chip(dhd_pub_t *dhd, uint ag_type)
{
uint chip, chiprev;
int i;
chip = dhd->conf->chip;
chiprev = dhd->conf->chiprev;
for (i=0; ichip == chip && row->chiprev == chiprev &&
(row->ag_type == ag_type ||
ag_type == DONT_CARE || row->ag_type == DONT_CARE)) {
return row;
}
}
return NULL;
}
有配置bcm43438a0和bcm43438a1
static bool
dhdsdio_probe_attach(struct dhd_bus *bus, osl_t *osh, void *sdh, void *regsva,
uint16 devid)
{
......
/* si_attach() will provide an SI handle and scan the backplane */
if (!(bus->sih = si_attach((uint)devid, osh, regsva, DHD_BUS, sdh,
&bus->vars, &bus->varsz))) {
DHD_ERROR(("%s: si_attach failed!\n", __FUNCTION__));
goto fail;
}
#ifdef DHD_DEBUG //bus->sih->chip 和bus->sih->chiprev 来表示模块唯一ID
DHD_ERROR(("F1 signature OK, socitype:0x%x chip:0x%4x rev:0x%x pkg:0x%x\n",
bus->sih->socitype, bus->sih->chip, bus->sih->chiprev, bus->sih->chippkg));
#endif /* DHD_DEBUG */
......
}
查看android hal 代码
已经添加了ap6212 和ap6212a
static const fw_auto_detection_entry_t fw_auto_detection_table[] = {
{"4343A0","BCM43438A0"}, //AP6212
{"BCM4350C0","BCM4354A1"}, //AP6354
{"BCM4335C0","BCM4339A0"}, //AP6335
{"BCM4354A2","BCM4356A2"}, //AP6356
{"BCM4359C0","BCM4359C0"}, //AP6359
{"BCM4349B1","BCM4359B1"}, //AP6359
{"BCM4330B1","BCM40183B2"}, //AP6330
{"BCM4324B3","BCM43241B4"}, //AP62X2
{"BCM20702A","BCM20710A1"}, //AP6210B
{"BCM43430B0","BCM4343B0"}, //AP6236
{"BCM43430A1","BCM43438A1"}, //AP6212A
{NULL, NULL}
};
property_set(“wlan.hardware.info”, info);
内核上报地方：
kernel/linux-4.9/drivers/mmc/core/sdio_bus.c
static int sdio_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct sdio_func *func = dev_to_sdio_func(dev);
unsigned int deviceid = func->device;
printk("%s: cis_chipvendor:0x%x,deviceid:0x%x ,func->num=%d\n", __func__,cis_chipvendor,deviceid,func->num);
if (add_uevent_var(env,
"SDIO_CLASS=%02X", func->class))
return -ENOMEM;
if (cis_chipvendor == 0x8101) { //for awcm wifi module
if (func->device == 0xa9a6) {
deviceid = 0x8172; //awnm372sm wifi
} else {
deviceid = cis_chipvendor; //awcm390sm wifi
}
}
if (add_uevent_var(env,
"SDIO_ID=%04X:%04X", func->vendor, deviceid))
return -ENOMEM;
printk("%s: SDIO_ID=%04X:%04X", __func__, func->vendor, deviceid);
if (add_uevent_var(env,
"MODALIAS=sdio:c%02Xv%04Xd%04X",
func->class, func->vendor, func->device))
return -ENOMEM;
return 0;
}
android 数据解析:
android/hardware/libhardware_legacy/wifi_hardware_info/wifi_hardware_info.c
static void parse_uevent(char *msg, struct wifi_hardware_info *wifiinfo)
{
......
if (!strncmp(subsystem, "sdio", 4)) {
ALOGI("get uevent, sdio_id = %s", sdio_id);
strcpy(device_type, "sdio");
char *subid = strrchr(sdio_id, ':');
if (subid == NULL) {
return;
}
subid++;
strcpy(sdio_device_id, subid);
device_id = strtoul(sdio_device_id, NULL, 16);
device_id += 0x10000; //底层只上报device_id ,片选设备0x01没有上报，导致应用层无法区分ap6212和ap6212a chip:0xa9a6 rev:0x1 pkg:0x4）
}
......
}
void get_driver_module_arg(char* arg) 设置nvram_path的时候只识别出ap6212
底层只上报device_id
android/hardware/libhardware_legacy/wifi_hardware_info/wifi_hardware_info.c
struct wifi_hardware_info {
unsigned long device_id;
char *module_name;
char *driver_name;
char *driver_module_name;
char *vendor_name;
char *fw_path_sta;
char *fw_path_ap;
char *fw_path_p2p;
};
static const struct wifi_hardware_info wifi_list[] = {
{
.device_id = 0x1a9a6, //设备ID，通过内核sdio_probe 可以查看到此ID
.module_name = "ap6212", //模块名字
.driver_name = "bcmdhd", //驱动名字
.driver_module_name = "bcmdhd",
.vendor_name = "broadcom",
.fw_path_sta = "/system/vendor/modules/fw_bcm43438a0.bin", //驱动bin文件
.fw_path_ap = "/system/vendor/modules/fw_bcm43438a0_apsta.bin",
.fw_path_p2p = "/system/vendor/modules/fw_bcm43438a0_p2p.bin",
}
}
void get_driver_module_arg(char* arg)
{
...............................
const char *vendor_name = get_wifi_vendor_name();
if(strcmp(vendor_name, "realtek") == 0) {
const char *driver_module_arg = "ifname=wlan0 if2name=p2p0";
snprintf(module_arg, sizeof(module_arg), "%s", driver_module_arg);
} else if(strcmp(vendor_name, "broadcom") == 0) {
const char *nvram_path = "nvram_path=/system/vendor/modules/nvram";
const char *config_path = "config_path=/system/vendor/modules/config";
**snprintf(module_arg, sizeof(module_arg), "%s_%s.txt %s_%s.txt",
nvram_path, get_wifi_module_name(), config_path, get_wifi_module_name());
}
...............................
}
解决如下：
android/hardware/libhardware_legacy/wifi_hardware_info/wifi_hardware_info.c
//在wifi_list 添加ap6212a的配置是行不通的
static const struct wifi_hardware_info wifi_list[] = {
{
.device_id = 0x1a9a6, //设备ID，通过内核sdio_probe 可以查看到此ID
.module_name = "ap6212", //模块名字
.driver_name = "bcmdhd", //驱动名字
.driver_module_name = "bcmdhd",
.vendor_name = "broadcom",
.fw_path_sta = "/system/vendor/modules/fw_bcm43438a1.bin", //驱动bin文件
.fw_path_ap = "/system/vendor/modules/fw_bcm43438a1_apsta.bin",
.fw_path_p2p = "/system/vendor/modules/fw_bcm43438a1_p2p.bin",
}
}
从分析来看内核sdio_bus_uevent 生产上报的env 数据比较早，还没区分是ap6212还是ap6212a，所以只能从内核方面入手解决。
再重新分析bin文件能加载对，但是nvram加载不对，原因在于如下: dhd_conf_get_module_name，获取到的模块名字为空，导致底层最终使用的nvram是由应用传递下来的。而在这个时候，已经拿到ag_type 是可以区分ap6212和ap6212a了。
kernel/linux-4.9/drivers/net/wireless/bcmdhd/dhd_config.c
const chip_name_map_t*dhd_conf_match_chip(dhd_pub_t *dhd, uint ag_type)
{
uint chip, chiprev;
int i;
chip = dhd->conf->chip;
chiprev = dhd->conf->chiprev;
for (i=0; ichip == chip && row->chiprev == chiprev &&
(row->ag_type == ag_type ||
ag_type == DONT_CARE || row->ag_type == DONT_CARE)) {
return row;
}
}
return NULL;
}
char *dhd_conf_get_module_name(dhd_pub_t *dhd, int ag_type){
const chip_name_map_t *row_chip = NULL;
char *name = NULL;
{
row_chip = dhd_conf_match_chip(dhd, ag_type);
if (row_chip && strlen(row_chip->module_name)) {
name = row_chip->module_name;
}
}
return name;
}
void dhd_conf_set_nv_name_by_chip(dhd_pub_t *dhd, char *nv_path, int ag_type)
{
......
name_ptr = &nv_path[i];
module_name = dhd_conf_get_module_name(dhd, ag_type); //为空，导致使用hal传递下来的nvram配置
if (module_name) {
strcpy(name_ptr, "nvram_");
strcat(name_ptr, module_name);
#ifdef BCMUSBDEV_COMPOSITE
strcat(name_ptr, "_cusb");
#endif
strcat(name_ptr, ".txt");
printk("dhd_conf_set_nv_name_by_chip module_name=%s\n", module_name);
}
strcpy(nv_name, name_ptr);
......
}
再回头看，原来是没有定义ap6212和ap6212a模块，导致这里取出来是空。
最终解决如下:
const chip_name_map_t chip_name_map[] = {
/* ChipID Chiprev AG ChipName ModuleName */
{BCM43430_CHIP_ID, 0, DONT_CARE, "bcm43438a0", ""},
{BCM43430_CHIP_ID, 1, DONT_CARE, "bcm43438a1", ""},
{BCM43430_CHIP_ID, 2, DONT_CARE, "bcm43436b0", ""},
}
修改:
const chip_name_map_t chip_name_map[] = {
/* ChipID Chiprev AG ChipName ModuleName */
{BCM43430_CHIP_ID, 0, DONT_CARE, "bcm43438a0", "ap6212"},
{BCM43430_CHIP_ID, 1, DONT_CARE, "bcm43438a1", "ap6212a"},
{BCM43430_CHIP_ID, 2, DONT_CARE, "bcm43436b0", ""},
}
这样就能正确加载nvram_ap6212a.txt