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本例程提供WLAN模块初始化过程的完整使用流程。示例如下(以hi3881WLAN芯片为例):
1、根据硬件,修改配置参数
/* 根据硬件参数,通过wlan_platform.hcs配置相关参数,以下是WLAN平台配置的示例 */ hisi :& deviceList { device0 :: deviceInst { deviceInstId = 0; powers { power0 { powerSeqDelay = 0; /* 电源序列延时 */ powerType = 1; /* 电源类型:0--总是打开;1--GPIO */ gpioId = 1; /* GPIO管脚号 */ activeLevel=1; /* 有效电平:0--低;1--高 */ } power1 { powerSeqDelay = 0; /* 电源序列延时 */ powerType = 0; /* 电源类型:0--总是打开;1--GPIO */ } } reset { resetType = 0; /* 复位类型:0--不管理;1--GPIO */ gpioId = 2; /* GPIO管脚号 */ activeLevel=1; /* 有效电平:0--低;1--高 */ resetHoldTime = 30; /* 复位配置后的等待时间(ms) */ } bootUpTimeout = 30; /* 启动超时时间(ms) */ bus { busType = 0; /* 总线类型:0-sdio */ busId = 2; /* 总线号 */ funcNum = [1]; /* SDIO功能号 */ timeout = 1000; /* 读/写数据的超时时间 */ blockSize = 512; /* 读/写数据的块大小 */ } } } /* 每一块芯片添加配置文件wlan_chip_<芯片名>.hcs(如:wlan_chip_hi3881.hcs),配置相关参数。以下是hi3881的配置示例 */ root { wlan_config { hi3881 :& chipList { chipHi3881 :: chipInst { match_attr = "hdf_wlan_chips_hi3881"; /* 配置匹配标识 */ chipName = "hi3881"; /* WLAN芯片的名称 */ sdio { vendorId = 0x0296; /* 厂商Id */ deviceId = [0x5347]; /* 设备Id */ } } } } }
2、适配挂接WLAN芯片的初始化和去初始化、WLAN芯片驱动的初始化和去初始化
/* WLAN初始化挂接流程 */ #include "hdf_device_desc.h" #include "hdf_wifi_product.h" #include "hdf_log.h" #include "osal_mem.h" #include "hdf_wlan_chipdriver_manager.h" #include "securec.h" #include "wifi_module.h" #include "hi_wifi_api.h" #include "hi_types_base.h" #define HDF_LOG_TAG Hi3881Driver /* WLAN芯片的初始化和去初始化函数 */ int32_t InitHi3881Chip(struct HdfWlanDevice *device); int32_t DeinitHi3881Chip(struct HdfWlanDevice *device); /* WLAN芯片驱动的初始化和去初始化函数 */ int32_t Hi3881Deinit(struct HdfChipDriver* chipDriver, struct NetDevice *netDevice); int32_t Hi3881Init(struct HdfChipDriver* chipDriver, struct NetDevice *netDevice); /* 初始化mac80211与芯片侧的函数挂接 */ hi_void HiMac80211Init(struct HdfChipDriver *chipDriver); static const char* const HI3881_DRIVER_NAME = "hisi"; /* WLAN芯片驱动挂接以及mac80211与芯片侧的函数挂接 */ static struct HdfChipDriver *BuildHi3881Driver(struct HdfWlanDevice *device, uint8_t ifIndex) { struct HdfChipDriver *specificDriver = NULL; if (device == NULL) { HDF_LOGE("%s fail : channel is NULL", __func__); return NULL; } (void)device; (void)ifIndex; specificDriver = (struct HdfChipDriver *)OsalMemCalloc(sizeof(struct HdfChipDriver)); if (specificDriver == NULL) { HDF_LOGE("%s fail: OsalMemCalloc fail!", __func__); return NULL; } if (memset_s(specificDriver, sizeof(struct HdfChipDriver), 0, sizeof(struct HdfChipDriver)) != EOK) { HDF_LOGE("%s fail: memset_s fail!", __func__); OsalMemFree(specificDriver); return NULL; } if (strcpy_s(specificDriver->name, MAX_WIFI_COMPONENT_NAME_LEN, HI3881_DRIVER_NAME) != EOK) { HDF_LOGE("%s fail : strcpy_s fail", __func__); OsalMemFree(specificDriver); return NULL; } specificDriver->init = Hi3881Init; specificDriver->deinit = Hi3881Deinit; HiMac80211Init(specificDriver); return specificDriver; } /* 释放WLAN芯片驱动 */ static void ReleaseHi3881Driver(struct HdfChipDriver *chipDriver) { if (chipDriver == NULL) { return; } if (strcmp(chipDriver->name, HI3881_DRIVER_NAME) != 0) { HDF_LOGE("%s:Not my driver!", __func__); return; } OsalMemFree(chipDriver); } static uint8_t GetHi3881GetMaxIFCount(struct HdfChipDriverFactory *factory) { (void)factory; return 1; } /* WLAN芯片相关函数的注册 */ static int32_t HDFWlanRegHisiDriverFactory(void) { static struct HdfChipDriverFactory tmpFactory = { 0 }; struct HdfChipDriverManager *driverMgr = NULL; driverMgr = HdfWlanGetChipDriverMgr(); if (driverMgr == NULL && driverMgr->RegChipDriver != NULL) { HDF_LOGE("%s fail: driverMgr is NULL!", __func__); return HDF_FAILURE; } tmpFactory.driverName = HI3881_DRIVER_NAME; tmpFactory.GetMaxIFCount = GetHi3881GetMaxIFCount; tmpFactory.InitChip = InitHi3881Chip; tmpFactory.DeinitChip = DeinitHi3881Chip; tmpFactory.Build = BuildHi3881Driver; tmpFactory.Release = ReleaseHi3881Driver; tmpFactory.ReleaseFactory = NULL; if (driverMgr->RegChipDriver(&tmpFactory) != HDF_SUCCESS) { HDF_LOGE("%s fail: driverMgr is NULL!", __func__); return HDF_FAILURE; } return HDF_SUCCESS; } static int32_t HdfWlanHisiChipDriverInit(struct HdfDeviceObject *device) { (void)device; return HDFWlanRegHisiDriverFactory(); } struct HdfDriverEntry g_hdfHisiChipEntry = { .moduleVersion = 1, .Init = HdfWlanHisiChipDriverInit, .moduleName = "HDF_WLAN_CHIPS" }; HDF_INIT(g_hdfHisiChipEntry);
#include "hdf_wifi_product.h" #include "hi_wifi_api.h" #if (_PRE_OS_VERSION_LINUX == _PRE_OS_VERSION) #include "oal_thread.h" #include "osal_time.h" #endif #include "wifi_mac80211_ops.h" #include "wal_cfg80211.h" #include "net_adpater.h" #include "hdf_wlan_utils.h" #define HDF_LOG_TAG Hi3881Driver /* WLAN芯片的初始化函数 */ int32_t InitHi3881Chip(struct HdfWlanDevice *device) { uint8_t maxPortCount = 1; int32_t ret = HI_SUCCESS; uint8_t maxRetryCount = 2; if (device == NULL) { HDF_LOGE("%s:NULL ptr!", __func__); return HI_FAIL; } do { if (ret != HI_SUCCESS) { if (device->reset != NULL && device->reset->Reset != NULL) { device->reset->Reset(device->reset); } HDF_LOGE("%s:Retry init hi3881!last ret=%d", __func__, ret); } ret = hi_wifi_init(maxPortCount); } while (ret != 0 && --maxRetryCount > 0); if (ret != 0) { HDF_LOGE("%s:Init hi3881 driver failed!", __func__); return ret; } return HI_SUCCESS; } /* WLAN芯片的去初始化函数 */ int32_t DeinitHi3881Chip(struct HdfWlanDevice *device) { (void)device; int32_t ret = hi_wifi_deinit(); if (ret != 0) { HDF_LOGE("%s:Deinit failed!ret=%d", __func__, ret); } return ret; } /* WLAN芯片驱动的初始化函数 */ int32_t Hi3881Init(struct HdfChipDriver *chipDriver, struct NetDevice *netDevice) { HDF_LOGI("%s: start...", __func__); hi_u16 mode = wal_get_vap_mode(); int32_t ret; nl80211_iftype_uint8 type; (void)chipDriver; if (mode >= WAL_WIFI_MODE_BUTT) { oam_error_log1(0, 0, "wal_init_drv_netdev:: invalid mode[%d]", mode); return HI_FAIL; } if (mode == WAL_WIFI_MODE_STA) { type = NL80211_IFTYPE_STATION; } else if (mode == WAL_WIFI_MODE_AP) { type = NL80211_IFTYPE_AP; } else { oam_error_log1(0, 0, "wal_init_drv_netdev:: invalid mode[%d]", mode); return HI_FAIL; } ret = wal_init_drv_wlan_netdev(type, WAL_PHY_MODE_11N, netDevice); if (ret != HI_SUCCESS) { oam_error_log2(0, OAM_SF_ANY, "wal_init_drv_netdev %s failed.l_return:%d\n", netDevice->name, ret); } return ret; } /* WLAN芯片驱动的去初始化函数 */ int32_t Hi3881Deinit(struct HdfChipDriver *chipDriver, struct NetDevice *netDevice) { (void)chipDriver; int32_t ret = wal_deinit_drv_wlan_netdev(netDevice); if (ret != HDF_SUCCESS) { return ret; } return ReleasePlatformNetDevice(netDevice); }
3、在芯片侧初始化过程中调用netdev的init和add接口进行初始化netdev,并挂接netdev的一些函数指针
hi_s32 wal_init_drv_wlan_netdev(nl80211_iftype_uint8 type, wal_phy_mode mode, hi_char* ifname, hi_u32* len) { oal_net_device_stru *netdev = HI_NULL; ...... /* 初始化网络设备,获取对应的实例。*/ netdev = NetDeviceInit(ifname, *len, LITE_OS); oal_wireless_dev *wdev = (oal_wireless_dev *)oal_mem_alloc(OAL_MEM_POOL_ID_LOCAL, sizeof(oal_wireless_dev)); ret = wal_init_netif(type, netdev, wdev); ...... return HI_SUCCESS; } /* 挂接netdev的一些函数指针,详细挂接函数{@link NetDeviceInterFace} */ oal_net_device_ops_stru g_wal_net_dev_ops = { .getStats = wal_netdev_get_stats, .open = wal_netdev_open, .stop = wal_netdev_stop, .xmit = hmac_bridge_vap_xmit, .ioctl = wal_net_device_ioctl, .changeMtu = oal_net_device_change_mtu, .init = oal_net_device_init, .deInit = oal_net_free_netdev, #if (defined(_PRE_WLAN_FEATURE_FLOWCTL) || defined(_PRE_WLAN_FEATURE_OFFLOAD_FLOWCTL)) .selectQueue = wal_netdev_select_queue, #endif .setMacAddr = wal_netdev_set_mac_addr, #if (_PRE_OS_VERSION_LITEOS == _PRE_OS_VERSION) .netifNotify = HI_NULL, #endif .specialEtherTypeProcess = SpecialEtherTypeProcess, }; hi_s32 wal_init_netif(nl80211_iftype_uint8 type, oal_net_device_stru *netdev, const oal_wireless_dev *wdev) { /* 添加网络设备到协议栈 */ hi_u32 ret = NetDeviceAdd(netdev, (Protocol80211IfType)type); ...... return HI_SUCCESS; }
4、WifiMac80211Ops中的函数挂接实现
/* 挂接mac80211的一些函数指针 */ /* 驱动需要实现的MAC层基本能力的控制接口 */ static struct HdfMac80211BaseOps g_baseOps = { .SetMode = WalSetMode, .AddKey = WalAddKey, .DelKey = WalDelKey, .SetDefaultKey = WalSetDefaultKey, .GetDeviceMacAddr = WalGetDeviceMacAddr, .SetMacAddr = WalSetMacAddr, .SetTxPower = WalSetTxPower, .GetValidFreqsWithBand = WalGetValidFreqsWithBand, .GetHwCapability = WalGetHwCapability }; /* 驱动需要实现的MAC层STA能力的控制接口 */ static struct HdfMac80211STAOps g_staOps = { .Connect = WalConnect, .Disconnect = WalDisconnect, .StartScan = WalStartScan, .AbortScan = WalAbortScan, .SetScanningMacAddress = WalSetScanningMacAddress, }; /* 驱动需要实现的MAC层AP能力的控制接口 */ static struct HdfMac80211APOps g_apOps = { .ConfigAp = WalConfigAp, .StartAp = WalStartAp, .StopAp = WalStopAp, .ConfigBeacon = WalChangeBeacon, .DelStation = WalDelStation, .SetCountryCode = WalSetCountryCode, .GetAssociatedStasCount = WalGetAssociatedStasCount, .GetAssociatedStasInfo = WalGetAssociatedStasInfo }; /* 初始化mac80211与芯片侧的函数挂接 */ hi_void HiMac80211Init(struct HdfChipDriver *chipDriver) { if (chipDriver == NULL) { oam_error_log(0, OAM_SF_ANY, "%s:input is NULL!", __func__); return; } chipDriver->ops = &g_baseOps; chipDriver->staOps = &g_staOps; chipDriver->apOps = &g_apOps; }
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