cmdresp.c

linux内核源码

	return 0;
}

static int wlan_ret_get_log(wlan_private * priv,
			    struct cmd_ds_command *resp)
{
	struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
	wlan_adapter *adapter = priv->adapter;

	lbs_deb_enter(LBS_DEB_CMD);

	/* Stored little-endian */
	memcpy(&adapter->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));

	lbs_deb_leave(LBS_DEB_CMD);
	return 0;
}

static int libertas_ret_802_11_enable_rsn(wlan_private * priv,
                                          struct cmd_ds_command *resp)
{
	struct cmd_ds_802_11_enable_rsn *enable_rsn = &resp->params.enbrsn;
	wlan_adapter *adapter = priv->adapter;
	u32 * pdata_buf = adapter->cur_cmd->pdata_buf;

	lbs_deb_enter(LBS_DEB_CMD);

	if (enable_rsn->action == cpu_to_le16(CMD_ACT_GET)) {
		if (pdata_buf)
			*pdata_buf = (u32) le16_to_cpu(enable_rsn->enable);
	}

	lbs_deb_leave(LBS_DEB_CMD);
	return 0;
}

static inline int handle_cmd_response(u16 respcmd,
				      struct cmd_ds_command *resp,
				      wlan_private *priv)
{
	int ret = 0;
	unsigned long flags;
	wlan_adapter *adapter = priv->adapter;

	lbs_deb_enter(LBS_DEB_HOST);

	switch (respcmd) {
	case CMD_RET(CMD_MAC_REG_ACCESS):
	case CMD_RET(CMD_BBP_REG_ACCESS):
	case CMD_RET(CMD_RF_REG_ACCESS):
		ret = wlan_ret_reg_access(priv, respcmd, resp);
		break;

	case CMD_RET(CMD_GET_HW_SPEC):
		ret = wlan_ret_get_hw_spec(priv, resp);
		break;

	case CMD_RET(CMD_802_11_SCAN):
		ret = libertas_ret_80211_scan(priv, resp);
		break;

	case CMD_RET(CMD_802_11_GET_LOG):
		ret = wlan_ret_get_log(priv, resp);
		break;

	case CMD_RET_802_11_ASSOCIATE:
	case CMD_RET(CMD_802_11_ASSOCIATE):
	case CMD_RET(CMD_802_11_REASSOCIATE):
		ret = libertas_ret_80211_associate(priv, resp);
		break;

	case CMD_RET(CMD_802_11_DISASSOCIATE):
	case CMD_RET(CMD_802_11_DEAUTHENTICATE):
		ret = libertas_ret_80211_disassociate(priv, resp);
		break;

	case CMD_RET(CMD_802_11_AD_HOC_START):
	case CMD_RET(CMD_802_11_AD_HOC_JOIN):
		ret = libertas_ret_80211_ad_hoc_start(priv, resp);
		break;

	case CMD_RET(CMD_802_11_GET_STAT):
		ret = wlan_ret_802_11_stat(priv, resp);
		break;

	case CMD_RET(CMD_802_11_SNMP_MIB):
		ret = wlan_ret_802_11_snmp_mib(priv, resp);
		break;

	case CMD_RET(CMD_802_11_RF_TX_POWER):
		ret = wlan_ret_802_11_rf_tx_power(priv, resp);
		break;

	case CMD_RET(CMD_802_11_SET_AFC):
	case CMD_RET(CMD_802_11_GET_AFC):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		memmove(adapter->cur_cmd->pdata_buf, &resp->params.afc,
			sizeof(struct cmd_ds_802_11_afc));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);

		break;

	case CMD_RET(CMD_MAC_MULTICAST_ADR):
	case CMD_RET(CMD_MAC_CONTROL):
	case CMD_RET(CMD_802_11_SET_WEP):
	case CMD_RET(CMD_802_11_RESET):
	case CMD_RET(CMD_802_11_AUTHENTICATE):
	case CMD_RET(CMD_802_11_RADIO_CONTROL):
	case CMD_RET(CMD_802_11_BEACON_STOP):
		break;

	case CMD_RET(CMD_802_11_ENABLE_RSN):
		ret = libertas_ret_802_11_enable_rsn(priv, resp);
		break;

	case CMD_RET(CMD_802_11_DATA_RATE):
		ret = wlan_ret_802_11_data_rate(priv, resp);
		break;
	case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
		ret = wlan_ret_802_11_rate_adapt_rateset(priv, resp);
		break;
	case CMD_RET(CMD_802_11_RF_CHANNEL):
		ret = wlan_ret_802_11_rf_channel(priv, resp);
		break;

	case CMD_RET(CMD_802_11_RSSI):
		ret = wlan_ret_802_11_rssi(priv, resp);
		break;

	case CMD_RET(CMD_802_11_MAC_ADDRESS):
		ret = wlan_ret_802_11_mac_address(priv, resp);
		break;

	case CMD_RET(CMD_802_11_AD_HOC_STOP):
		ret = libertas_ret_80211_ad_hoc_stop(priv, resp);
		break;

	case CMD_RET(CMD_802_11_KEY_MATERIAL):
		ret = wlan_ret_802_11_key_material(priv, resp);
		break;

	case CMD_RET(CMD_802_11_EEPROM_ACCESS):
		ret = wlan_ret_802_11_eeprom_access(priv, resp);
		break;

	case CMD_RET(CMD_802_11D_DOMAIN_INFO):
		ret = libertas_ret_802_11d_domain_info(priv, resp);
		break;

	case CMD_RET(CMD_802_11_SLEEP_PARAMS):
		ret = wlan_ret_802_11_sleep_params(priv, resp);
		break;
	case CMD_RET(CMD_802_11_INACTIVITY_TIMEOUT):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		*((u16 *) adapter->cur_cmd->pdata_buf) =
		    le16_to_cpu(resp->params.inactivity_timeout.timeout);
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;

	case CMD_RET(CMD_802_11_TPC_CFG):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		memmove(adapter->cur_cmd->pdata_buf, &resp->params.tpccfg,
			sizeof(struct cmd_ds_802_11_tpc_cfg));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;
	case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		memmove(adapter->cur_cmd->pdata_buf, &resp->params.ledgpio,
			sizeof(struct cmd_ds_802_11_led_ctrl));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;
	case CMD_RET(CMD_802_11_PWR_CFG):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		memmove(adapter->cur_cmd->pdata_buf, &resp->params.pwrcfg,
			sizeof(struct cmd_ds_802_11_pwr_cfg));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);

		break;

	case CMD_RET(CMD_GET_TSF):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		memcpy(priv->adapter->cur_cmd->pdata_buf,
		       &resp->params.gettsf.tsfvalue, sizeof(u64));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;
	case CMD_RET(CMD_BT_ACCESS):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		if (adapter->cur_cmd->pdata_buf)
			memcpy(adapter->cur_cmd->pdata_buf,
			       &resp->params.bt.addr1, 2 * ETH_ALEN);
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;
	case CMD_RET(CMD_FWT_ACCESS):
		spin_lock_irqsave(&adapter->driver_lock, flags);
		if (adapter->cur_cmd->pdata_buf)
			memcpy(adapter->cur_cmd->pdata_buf, &resp->params.fwt,
			       sizeof(resp->params.fwt));
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		break;
	case CMD_RET(CMD_MESH_ACCESS):
		if (adapter->cur_cmd->pdata_buf)
			memcpy(adapter->cur_cmd->pdata_buf, &resp->params.mesh,
			       sizeof(resp->params.mesh));
		break;
	default:
		lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
			    resp->command);
		break;
	}
	lbs_deb_leave(LBS_DEB_HOST);
	return ret;
}

int libertas_process_rx_command(wlan_private * priv)
{
	u16 respcmd;
	struct cmd_ds_command *resp;
	wlan_adapter *adapter = priv->adapter;
	int ret = 0;
	ulong flags;
	u16 result;

	lbs_deb_enter(LBS_DEB_HOST);

	/* Now we got response from FW, cancel the command timer */
	del_timer(&adapter->command_timer);

	mutex_lock(&adapter->lock);
	spin_lock_irqsave(&adapter->driver_lock, flags);

	if (!adapter->cur_cmd) {
		lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
		ret = -1;
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		goto done;
	}
	resp = (struct cmd_ds_command *)(adapter->cur_cmd->bufvirtualaddr);

	respcmd = le16_to_cpu(resp->command);
	result = le16_to_cpu(resp->result);

	lbs_deb_host("CMD_RESP: response 0x%04x, size %d, jiffies %lu\n",
		respcmd, priv->upld_len, jiffies);
	lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", adapter->cur_cmd->bufvirtualaddr,
		    priv->upld_len);

	if (!(respcmd & 0x8000)) {
		lbs_deb_host("invalid response!\n");
		adapter->cur_cmd_retcode = -1;
		__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
		adapter->nr_cmd_pending--;
		adapter->cur_cmd = NULL;
		spin_unlock_irqrestore(&adapter->driver_lock, flags);
		ret = -1;
		goto done;
	}

	/* Store the response code to cur_cmd_retcode. */
	adapter->cur_cmd_retcode = result;;

	if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
		struct cmd_ds_802_11_ps_mode *psmode = &resp->params.psmode;
		u16 action = le16_to_cpu(psmode->action);

		lbs_deb_host(
		       "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
		       result, action);

		if (result) {
			lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
				    result);
			/*
			 * We should not re-try enter-ps command in
			 * ad-hoc mode. It takes place in
			 * libertas_execute_next_command().
			 */
			if (adapter->mode == IW_MODE_ADHOC &&
			    action == CMD_SUBCMD_ENTER_PS)
				adapter->psmode = WLAN802_11POWERMODECAM;
		} else if (action == CMD_SUBCMD_ENTER_PS) {
			adapter->needtowakeup = 0;
			adapter->psstate = PS_STATE_AWAKE;

			lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
			if (adapter->connect_status != LIBERTAS_CONNECTED) {
				/*
				 * When Deauth Event received before Enter_PS command
				 * response, We need to wake up the firmware.
				 */
				lbs_deb_host(
				       "disconnected, invoking libertas_ps_wakeup\n");

				spin_unlock_irqrestore(&adapter->driver_lock, flags);
				mutex_unlock(&adapter->lock);
				libertas_ps_wakeup(priv, 0);
				mutex_lock(&adapter->lock);
				spin_lock_irqsave(&adapter->driver_lock, flags);
			}
		} else if (action == CMD_SUBCMD_EXIT_PS) {
			adapter->needtowakeup = 0;
			adapter->psstate = PS_STATE_FULL_POWER;
			lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
		} else {
			lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
		}

		__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
		adapter->nr_cmd_pending--;
		adapter->cur_cmd = NULL;
		spin_unlock_irqrestore(&adapter->driver_lock, flags);

		ret = 0;
		goto done;
	}

	if (adapter->cur_cmd->cmdflags & CMD_F_HOSTCMD) {
		/* Copy the response back to response buffer */
		memcpy(adapter->cur_cmd->pdata_buf, resp,
		       le16_to_cpu(resp->size));
		adapter->cur_cmd->cmdflags &= ~CMD_F_HOSTCMD;
	}

	/* If the command is not successful, cleanup and return failure */
	if ((result != 0 || !(respcmd & 0x8000))) {
		lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
		       result, respcmd);
		/*
		 * Handling errors here
		 */
		switch (respcmd) {
		case CMD_RET(CMD_GET_HW_SPEC):
		case CMD_RET(CMD_802_11_RESET):
			lbs_deb_host("CMD_RESP: reset failed\n");
			break;

		}

		__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
		adapter->nr_cmd_pending--;
		adapter->cur_cmd = NULL;
		spin_unlock_irqrestore(&adapter->driver_lock, flags);

		ret = -1;
		goto done;
	}

	spin_unlock_irqrestore(&adapter->driver_lock, flags);

	ret = handle_cmd_response(respcmd, resp, priv);

	spin_lock_irqsave(&adapter->driver_lock, flags);
	if (adapter->cur_cmd) {
		/* Clean up and Put current command back to cmdfreeq */
		__libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
		adapter->nr_cmd_pending--;
		WARN_ON(adapter->nr_cmd_pending > 128);
		adapter->cur_cmd = NULL;
	}
	spin_unlock_irqrestore(&adapter->driver_lock, flags);

done:
	mutex_unlock(&adapter->lock);
	lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
	return ret;
}

int libertas_process_event(wlan_private * priv)
{
	int ret = 0;
	wlan_adapter *adapter = priv->adapter;
	u32 eventcause;

	lbs_deb_enter(LBS_DEB_CMD);

	spin_lock_irq(&adapter->driver_lock);
	eventcause = adapter->eventcause;
	spin_unlock_irq(&adapter->driver_lock);

	lbs_deb_cmd("event cause 0x%x\n", eventcause);

	switch (eventcause >> SBI_EVENT_CAUSE_SHIFT) {
	case MACREG_INT_CODE_LINK_SENSED:
		lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
		break;

	case MACREG_INT_CODE_DEAUTHENTICATED:
		lbs_deb_cmd("EVENT: deauthenticated\n");
		libertas_mac_event_disconnected(priv);
		break;

	case MACREG_INT_CODE_DISASSOCIATED:
		lbs_deb_cmd("EVENT: disassociated\n");
		libertas_mac_event_disconnected(priv);
		break;

	case MACREG_INT_CODE_LINK_LOSE_NO_SCAN:
		lbs_deb_cmd("EVENT: link lost\n");
		libertas_mac_event_disconnected(priv);
		break;

	case MACREG_INT_CODE_PS_SLEEP:
		lbs_deb_cmd("EVENT: sleep\n");

		/* handle unexpected PS SLEEP event */
		if (adapter->psstate == PS_STATE_FULL_POWER) {
			lbs_deb_cmd(
			       "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
			break;
		}
		adapter->psstate = PS_STATE_PRE_SLEEP;

		libertas_ps_confirm_sleep(priv, (u16) adapter->psmode);

		break;

	case MACREG_INT_CODE_PS_AWAKE:
		lbs_deb_cmd("EVENT: awake\n");

		/* handle unexpected PS AWAKE event */
		if (adapter->psstate == PS_STATE_FULL_POWER) {
			lbs_deb_cmd(
			       "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
			break;
		}

		adapter->psstate = PS_STATE_AWAKE;

		if (adapter->needtowakeup) {
			/*
			 * wait for the command processing to finish
			 * before resuming sending
			 * adapter->needtowakeup will be set to FALSE
			 * in libertas_ps_wakeup()
			 */
			lbs_deb_cmd("waking up ...\n");
			libertas_ps_wakeup(priv, 0);
		}
		break;

	case MACREG_INT_CODE_MIC_ERR_UNICAST:
		lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
		handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
		break;

	case MACREG_INT_CODE_MIC_ERR_MULTICAST:
		lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
		handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
		break;
	case MACREG_INT_CODE_MIB_CHANGED:
	case MACREG_INT_CODE_INIT_DONE:
		break;

	case MACREG_INT_CODE_ADHOC_BCN_LOST:
		lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
		break;

	case MACREG_INT_CODE_RSSI_LOW:
		lbs_pr_alert("EVENT: rssi low\n");
		break;
	case MACREG_INT_CODE_SNR_LOW:
		lbs_pr_alert("EVENT: snr low\n");
		break;
	case MACREG_INT_CODE_MAX_FAIL:
		lbs_pr_alert("EVENT: max fail\n");
		break;
	case MACREG_INT_CODE_RSSI_HIGH:
		lbs_pr_alert("EVENT: rssi high\n");
		break;
	case MACREG_INT_CODE_SNR_HIGH:
		lbs_pr_alert("EVENT: snr high\n");
		break;

	case MACREG_INT_CODE_MESH_AUTO_STARTED:
		/* Ignore spurious autostart events if autostart is disabled */
		if (!priv->mesh_autostart_enabled) {
			lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
			break;
		}
		lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
		adapter->connect_status = LIBERTAS_CONNECTED;
		if (priv->mesh_open == 1) {
			netif_wake_queue(priv->mesh_dev);
			netif_carrier_on(priv->mesh_dev);
		}
		adapter->mode = IW_MODE_ADHOC;
		schedule_work(&priv->sync_channel);
		break;

	default:
		lbs_pr_alert("EVENT: unknown event id 0x%04x\n",
		       eventcause >> SBI_EVENT_CAUSE_SHIFT);
		break;
	}

	spin_lock_irq(&adapter->driver_lock);
	adapter->eventcause = 0;
	spin_unlock_irq(&adapter->driver_lock);

	lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
	return ret;
}