1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
9 #include <linux/firmware.h>
22 #define WILC1000_FW_PREFIX		"atmel/wilc1000_wifi_firmware-"
30 	if (wilc->close) {  in isr_uh_routine()
41 	if (wilc->close) {  in isr_bh_routine()
54 	struct wilc *wl = vif->wilc;  in init_irq()
57 	ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,  in init_irq()
60 				   dev->name, wl);  in init_irq()
65 	netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);  in init_irq()
73 	struct wilc *wilc = vif->wilc;  in deinit_irq()
76 	if (wilc->dev_irq_num)  in deinit_irq()
77 		free_irq(wilc->dev_irq_num, wilc);  in deinit_irq()
85 	if (wilc->mac_status == WILC_MAC_STATUS_INIT) {  in wilc_mac_indicate()
86 		wilc->mac_status = status;  in wilc_mac_indicate()
87 		complete(&wilc->sync_event);  in wilc_mac_indicate()
89 		wilc->mac_status = status;  in wilc_mac_indicate()
99 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in get_if_handler()
100 		if (vif->iftype == WILC_STATION_MODE)  in get_if_handler()
101 			if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {  in get_if_handler()
102 				ndev = vif->ndev;  in get_if_handler()
105 		if (vif->iftype == WILC_AP_MODE)  in get_if_handler()
106 			if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {  in get_if_handler()
107 				ndev = vif->ndev;  in get_if_handler()
121 		ether_addr_copy(vif->bssid, bssid);  in wilc_wlan_set_bssid()
123 		eth_zero_addr(vif->bssid);  in wilc_wlan_set_bssid()
125 	vif->iftype = mode;  in wilc_wlan_set_bssid()
134 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wlan_get_num_conn_ifcs()
135 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_wlan_get_num_conn_ifcs()
136 		if (!is_zero_ether_addr(vif->bssid))  in wilc_wlan_get_num_conn_ifcs()
139 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wlan_get_num_conn_ifcs()
149 	complete(&wl->txq_thread_started);  in wilc_txq_task()
151 		if (wait_for_completion_interruptible(&wl->txq_event))  in wilc_txq_task()
153 		if (wl->close) {  in wilc_txq_task()
154 			complete(&wl->txq_thread_started);  in wilc_txq_task()
166 				srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_txq_task()
167 				list_for_each_entry_rcu(ifc, &wl->vif_list,  in wilc_txq_task()
169 					if (ifc->mac_opened &&  in wilc_txq_task()
170 					    netif_queue_stopped(ifc->ndev))  in wilc_txq_task()
171 						netif_wake_queue(ifc->ndev);  in wilc_txq_task()
173 				srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_txq_task()
186 		} while (!wl->close);  in wilc_txq_task()
194 	struct wilc *wilc = vif->wilc;  in wilc_wlan_get_firmware()
196 	const struct firmware *wilc_fw;  in wilc_wlan_get_firmware()
201 	netdev_info(dev, "ChipID [%x] loading firmware [%s]\n", chip_id,  in wilc_wlan_get_firmware()
205 			       wilc->dev);  in wilc_wlan_get_firmware()
207 		netdev_err(dev, "%s - firmware not available\n",  in wilc_wlan_get_firmware()
209 		return -EINVAL;  in wilc_wlan_get_firmware()
211 	wilc->firmware = wilc_fw;  in wilc_wlan_get_firmware()
219 	struct wilc *wilc = vif->wilc;  in wilc_start_firmware()
226 	if (!wait_for_completion_timeout(&wilc->sync_event,  in wilc_start_firmware()
228 		return -ETIME;  in wilc_start_firmware()
236 	struct wilc *wilc = vif->wilc;  in wilc1000_firmware_download()
239 	if (!wilc->firmware) {  in wilc1000_firmware_download()
240 		netdev_err(dev, "Firmware buffer is NULL\n");  in wilc1000_firmware_download()
241 		return -ENOBUFS;  in wilc1000_firmware_download()
244 	ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,  in wilc1000_firmware_download()
245 					  wilc->firmware->size);  in wilc1000_firmware_download()
249 	release_firmware(wilc->firmware);  in wilc1000_firmware_download()
250 	wilc->firmware = NULL;  in wilc1000_firmware_download()
259 	struct wilc_priv *priv = &vif->priv;  in wilc_init_fw_config()
265 	netdev_dbg(dev, "Start configuring Firmware\n");  in wilc_init_fw_config()
266 	hif_drv = (struct host_if_drv *)priv->hif_drv;  in wilc_init_fw_config()
269 	w = vif->iftype;  in wilc_init_fw_config()
425 	return -EINVAL;  in wilc_init_fw_config()
431 	struct wilc *wl = vif->wilc;  in wlan_deinitialize_threads()
433 	wl->close = 1;  in wlan_deinitialize_threads()
435 	complete(&wl->txq_event);  in wlan_deinitialize_threads()
437 	if (wl->txq_thread) {  in wlan_deinitialize_threads()
438 		kthread_stop(wl->txq_thread);  in wlan_deinitialize_threads()
439 		wl->txq_thread = NULL;  in wlan_deinitialize_threads()
446 	struct wilc *wl = vif->wilc;  in wilc_wlan_deinitialize()
453 	if (wl->initialized) {  in wilc_wlan_deinitialize()
456 		if (!wl->dev_irq_num &&  in wilc_wlan_deinitialize()
457 		    wl->hif_func->disable_interrupt) {  in wilc_wlan_deinitialize()
458 			mutex_lock(&wl->hif_cs);  in wilc_wlan_deinitialize()
459 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_deinitialize()
460 			mutex_unlock(&wl->hif_cs);  in wilc_wlan_deinitialize()
462 		complete(&wl->txq_event);  in wilc_wlan_deinitialize()
470 		wl->initialized = false;  in wilc_wlan_deinitialize()
474 		netdev_dbg(dev, "wilc1000 is not initialized\n");  in wilc_wlan_deinitialize()
481 	struct wilc *wilc = vif->wilc;  in wlan_initialize_threads()
483 	wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,  in wlan_initialize_threads()
484 				       "%s-tx", dev->name);  in wlan_initialize_threads()
485 	if (IS_ERR(wilc->txq_thread)) {  in wlan_initialize_threads()
487 		wilc->close = 1;  in wlan_initialize_threads()
488 		return PTR_ERR(wilc->txq_thread);  in wlan_initialize_threads()
490 	wait_for_completion(&wilc->txq_thread_started);  in wlan_initialize_threads()
498 	struct wilc *wl = vif->wilc;  in wilc_wlan_initialize()
500 	if (!wl->initialized) {  in wilc_wlan_initialize()
501 		wl->mac_status = WILC_MAC_STATUS_INIT;  in wilc_wlan_initialize()
502 		wl->close = 0;  in wilc_wlan_initialize()
512 		if (wl->dev_irq_num && init_irq(dev)) {  in wilc_wlan_initialize()
513 			ret = -EIO;  in wilc_wlan_initialize()
517 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
518 		    wl->hif_func->enable_interrupt &&  in wilc_wlan_initialize()
519 		    wl->hif_func->enable_interrupt(wl)) {  in wilc_wlan_initialize()
520 			ret = -EIO;  in wilc_wlan_initialize()
544 			netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);  in wilc_wlan_initialize()
549 			netdev_err(dev, "Failed to configure firmware\n");  in wilc_wlan_initialize()
552 		wl->initialized = true;  in wilc_wlan_initialize()
559 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
560 		    wl->hif_func->disable_interrupt)  in wilc_wlan_initialize()
561 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_initialize()
563 		if (wl->dev_irq_num)  in wilc_wlan_initialize()
571 		netdev_dbg(dev, "wilc1000 already initialized\n");  in wilc_wlan_initialize()
587 	struct wilc *wl = vif->wilc;  in wilc_mac_open()
592 	if (!wl || !wl->dev) {  in wilc_mac_open()
594 		return -ENODEV;  in wilc_mac_open()
609 	wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,  in wilc_mac_open()
610 				vif->idx);  in wilc_mac_open()
612 	if (is_valid_ether_addr(ndev->dev_addr)) {  in wilc_mac_open()
613 		ether_addr_copy(addr, ndev->dev_addr);  in wilc_mac_open()
619 	netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);  in wilc_mac_open()
621 	if (!is_valid_ether_addr(ndev->dev_addr)) {  in wilc_mac_open()
625 		return -EINVAL;  in wilc_mac_open()
628 	mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;  in wilc_mac_open()
630 	vif->mgmt_reg_stypes = 0;  in wilc_mac_open()
631 	wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,  in wilc_mac_open()
632 					     vif->ndev->ieee80211_ptr,  in wilc_mac_open()
635 	wl->open_ifcs++;  in wilc_mac_open()
636 	vif->mac_opened = 1;  in wilc_mac_open()
644 	return &vif->netstats;  in mac_stats()
651 	struct wilc *wilc = vif->wilc;  in wilc_set_mac_addr()
657 	if (!is_valid_ether_addr(addr->sa_data))  in wilc_set_mac_addr()
658 		return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
660 	if (!vif->mac_opened) {  in wilc_set_mac_addr()
667 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_set_mac_addr()
668 	list_for_each_entry_rcu(tmp_vif, &wilc->vif_list, list) {  in wilc_set_mac_addr()
670 		if (ether_addr_equal(addr->sa_data, mac_addr)) {  in wilc_set_mac_addr()
672 				srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
673 				return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
675 			srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
679 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
681 	result = wilc_set_mac_address(vif, (u8 *)addr->sa_data);  in wilc_set_mac_addr()
697 	if (dev->flags & IFF_PROMISC)  in wilc_set_multicast_list()
700 	if (dev->flags & IFF_ALLMULTI ||  in wilc_set_multicast_list()
701 	    dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {  in wilc_set_multicast_list()
706 	if (dev->mc.count == 0) {  in wilc_set_multicast_list()
711 	mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);  in wilc_set_multicast_list()
718 		memcpy(cur_mc, ha->addr, ETH_ALEN);  in wilc_set_multicast_list()
724 	if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))  in wilc_set_multicast_list()
732 	dev_kfree_skb(pv_data->skb);  in wilc_tx_complete()
739 	struct wilc *wilc = vif->wilc;  in wilc_mac_xmit()
743 	if (skb->dev != ndev) {  in wilc_mac_xmit()
756 	tx_data->buff = skb->data;  in wilc_mac_xmit()
757 	tx_data->size = skb->len;  in wilc_mac_xmit()
758 	tx_data->skb  = skb;  in wilc_mac_xmit()
760 	vif->netstats.tx_packets++;  in wilc_mac_xmit()
761 	vif->netstats.tx_bytes += tx_data->size;  in wilc_mac_xmit()
763 						tx_data->buff, tx_data->size,  in wilc_mac_xmit()
770 		srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_mac_xmit()
771 		list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_mac_xmit()
772 			if (vif->mac_opened)  in wilc_mac_xmit()
773 				netif_stop_queue(vif->ndev);  in wilc_mac_xmit()
775 		srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_mac_xmit()
784 	struct wilc *wl = vif->wilc;  in wilc_mac_close()
788 	if (wl->open_ifcs > 0)  in wilc_mac_close()
789 		wl->open_ifcs--;  in wilc_mac_close()
793 	if (vif->ndev) {  in wilc_mac_close()
794 		netif_stop_queue(vif->ndev);  in wilc_mac_close()
797 		wilc_deinit_host_int(vif->ndev);  in wilc_mac_close()
800 	if (wl->open_ifcs == 0) {  in wilc_mac_close()
802 		wl->close = 1;  in wilc_mac_close()
806 	vif->mac_opened = 0;  in wilc_mac_close()
839 		skb->dev = wilc_netdev;  in wilc_frmw_to_host()
843 		skb->protocol = eth_type_trans(skb, wilc_netdev);  in wilc_frmw_to_host()
844 		vif->netstats.rx_packets++;  in wilc_frmw_to_host()
845 		vif->netstats.rx_bytes += frame_len;  in wilc_frmw_to_host()
846 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in wilc_frmw_to_host()
857 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wfi_mgmt_rx()
858 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_wfi_mgmt_rx()
864 		if ((vif->mgmt_reg_stypes & auth_bit &&  in wilc_wfi_mgmt_rx()
865 		     ieee80211_is_auth(mgmt->frame_control)) &&  in wilc_wfi_mgmt_rx()
866 		    vif->iftype == WILC_STATION_MODE && is_auth) {  in wilc_wfi_mgmt_rx()
871 		if (vif->priv.p2p_listen_state &&  in wilc_wfi_mgmt_rx()
872 		    vif->mgmt_reg_stypes & type_bit)  in wilc_wfi_mgmt_rx()
875 		if (vif->monitor_flag)  in wilc_wfi_mgmt_rx()
876 			wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);  in wilc_wfi_mgmt_rx()
878 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wfi_mgmt_rx()
899 	if (wilc->firmware) {  in wilc_netdev_cleanup()
900 		release_firmware(wilc->firmware);  in wilc_netdev_cleanup()
901 		wilc->firmware = NULL;  in wilc_netdev_cleanup()
904 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_netdev_cleanup()
905 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_netdev_cleanup()
906 		if (vif->ndev)  in wilc_netdev_cleanup()
907 			unregister_netdev(vif->ndev);  in wilc_netdev_cleanup()
909 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_netdev_cleanup()
912 	destroy_workqueue(wilc->hif_workqueue);  in wilc_netdev_cleanup()
915 		mutex_lock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
916 		if (wilc->vif_num <= 0) {  in wilc_netdev_cleanup()
917 			mutex_unlock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
922 			list_del_rcu(&vif->list);  in wilc_netdev_cleanup()
924 		wilc->vif_num--;  in wilc_netdev_cleanup()
925 		mutex_unlock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
926 		synchronize_srcu(&wilc->srcu);  in wilc_netdev_cleanup()
932 	wiphy_unregister(wilc->wiphy);  in wilc_netdev_cleanup()
933 	wiphy_free(wilc->wiphy);  in wilc_netdev_cleanup()
943 	srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_get_available_idx()
944 	list_for_each_entry_rcu(vif, &wl->vif_list, list) {  in wilc_get_available_idx()
945 		if (vif->idx == 0)  in wilc_get_available_idx()
950 	srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_get_available_idx()
964 		return ERR_PTR(-ENOMEM);  in wilc_netdev_ifc_init()
967 	ndev->ieee80211_ptr = &vif->priv.wdev;  in wilc_netdev_ifc_init()
968 	strcpy(ndev->name, name);  in wilc_netdev_ifc_init()
969 	vif->wilc = wl;  in wilc_netdev_ifc_init()
970 	vif->ndev = ndev;  in wilc_netdev_ifc_init()
971 	ndev->ml_priv = vif;  in wilc_netdev_ifc_init()
973 	ndev->netdev_ops = &wilc_netdev_ops;  in wilc_netdev_ifc_init()
975 	SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));  in wilc_netdev_ifc_init()
977 	vif->priv.wdev.wiphy = wl->wiphy;  in wilc_netdev_ifc_init()
978 	vif->priv.wdev.netdev = ndev;  in wilc_netdev_ifc_init()
979 	vif->priv.wdev.iftype = type;  in wilc_netdev_ifc_init()
980 	vif->priv.dev = ndev;  in wilc_netdev_ifc_init()
988 		ret = -EFAULT;  in wilc_netdev_ifc_init()
992 	wl->hif_workqueue = alloc_ordered_workqueue("%s-wq", WQ_MEM_RECLAIM,  in wilc_netdev_ifc_init()
993 						    ndev->name);  in wilc_netdev_ifc_init()
994 	if (!wl->hif_workqueue) {  in wilc_netdev_ifc_init()
995 		ret = -ENOMEM;  in wilc_netdev_ifc_init()
999 	ndev->needs_free_netdev = true;  in wilc_netdev_ifc_init()
1000 	vif->iftype = vif_type;  in wilc_netdev_ifc_init()
1001 	vif->idx = wilc_get_available_idx(wl);  in wilc_netdev_ifc_init()
1002 	vif->mac_opened = 0;  in wilc_netdev_ifc_init()
1003 	mutex_lock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
1004 	list_add_tail_rcu(&vif->list, &wl->vif_list);  in wilc_netdev_ifc_init()
1005 	wl->vif_num += 1;  in wilc_netdev_ifc_init()
1006 	mutex_unlock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
1007 	synchronize_srcu(&wl->srcu);  in wilc_netdev_ifc_init()