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-"
28 #define WILC3000_FW_PREFIX		"atmel/wilc3000_wifi_firmware-"
36 	if (wilc->close) {  in isr_uh_routine()
47 	if (wilc->close) {  in isr_bh_routine()
60 	struct wilc *wl = vif->wilc;  in init_irq()
63 	ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,  in init_irq()
66 				   dev->name, wl);  in init_irq()
71 	netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);  in init_irq()
79 	struct wilc *wilc = vif->wilc;  in deinit_irq()
82 	if (wilc->dev_irq_num)  in deinit_irq()
83 		free_irq(wilc->dev_irq_num, wilc);  in deinit_irq()
91 	if (wilc->mac_status == WILC_MAC_STATUS_INIT) {  in wilc_mac_indicate()
92 		wilc->mac_status = status;  in wilc_mac_indicate()
93 		complete(&wilc->sync_event);  in wilc_mac_indicate()
95 		wilc->mac_status = status;  in wilc_mac_indicate()
106 		if (vif->iftype == WILC_STATION_MODE)  in get_if_handler()
107 			if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {  in get_if_handler()
108 				ndev = vif->ndev;  in get_if_handler()
111 		if (vif->iftype == WILC_AP_MODE)  in get_if_handler()
112 			if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {  in get_if_handler()
113 				ndev = vif->ndev;  in get_if_handler()
127 		ether_addr_copy(vif->bssid, bssid);  in wilc_wlan_set_bssid()
129 		eth_zero_addr(vif->bssid);  in wilc_wlan_set_bssid()
131 	vif->iftype = mode;  in wilc_wlan_set_bssid()
140 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wlan_get_num_conn_ifcs()
142 		if (!is_zero_ether_addr(vif->bssid))  in wilc_wlan_get_num_conn_ifcs()
145 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wlan_get_num_conn_ifcs()
154 	srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_wake_tx_queues()
156 		if (ifc->mac_opened && netif_queue_stopped(ifc->ndev))  in wilc_wake_tx_queues()
157 			netif_wake_queue(ifc->ndev);  in wilc_wake_tx_queues()
159 	srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_wake_tx_queues()
168 	complete(&wl->txq_thread_started);  in wilc_txq_task()
170 		if (wait_for_completion_interruptible(&wl->txq_event))  in wilc_txq_task()
172 		if (wl->close) {  in wilc_txq_task()
173 			complete(&wl->txq_thread_started);  in wilc_txq_task()
195 		} while (!wl->close);  in wilc_txq_task()
203 	struct wilc *wilc = vif->wilc;  in wilc_wlan_get_firmware()
204 	const struct firmware *wilc_fw;  in wilc_wlan_get_firmware()
205 	char *firmware;  in wilc_wlan_get_firmware()  local
208 	if (is_wilc1000(wilc->chipid))  in wilc_wlan_get_firmware()
209 		firmware = WILC1000_FW(WILC1000_API_VER);  in wilc_wlan_get_firmware()
210 	else if (is_wilc3000(wilc->chipid))  in wilc_wlan_get_firmware()
211 		firmware = WILC3000_FW(WILC3000_API_VER);  in wilc_wlan_get_firmware()
213 		return -EINVAL;  in wilc_wlan_get_firmware()
215 	netdev_info(dev, "WILC%d loading firmware [%s]\n",  in wilc_wlan_get_firmware()
216 		    is_wilc1000(wilc->chipid) ? 1000 : 3000,  in wilc_wlan_get_firmware()
217 		    firmware);  in wilc_wlan_get_firmware()
219 	ret = request_firmware(&wilc_fw, firmware, wilc->dev);  in wilc_wlan_get_firmware()
221 		netdev_err(dev, "%s - firmware not available\n", firmware);  in wilc_wlan_get_firmware()
222 		return -EINVAL;  in wilc_wlan_get_firmware()
224 	wilc->firmware = wilc_fw;  in wilc_wlan_get_firmware()
232 	struct wilc *wilc = vif->wilc;  in wilc_start_firmware()
239 	if (!wait_for_completion_timeout(&wilc->sync_event,  in wilc_start_firmware()
241 		return -ETIME;  in wilc_start_firmware()
249 	struct wilc *wilc = vif->wilc;  in wilc_firmware_download()
252 	if (!wilc->firmware) {  in wilc_firmware_download()
253 		netdev_err(dev, "Firmware buffer is NULL\n");  in wilc_firmware_download()
254 		return -ENOBUFS;  in wilc_firmware_download()
257 	ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,  in wilc_firmware_download()
258 					  wilc->firmware->size);  in wilc_firmware_download()
262 	release_firmware(wilc->firmware);  in wilc_firmware_download()
263 	wilc->firmware = NULL;  in wilc_firmware_download()
272 	struct wilc_priv *priv = &vif->priv;  in wilc_init_fw_config()
278 	netdev_dbg(dev, "Start configuring Firmware\n");  in wilc_init_fw_config()
279 	hif_drv = (struct host_if_drv *)priv->hif_drv;  in wilc_init_fw_config()
282 	w = vif->iftype;  in wilc_init_fw_config()
438 	return -EINVAL;  in wilc_init_fw_config()
444 	struct wilc *wl = vif->wilc;  in wlan_deinitialize_threads()
446 	wl->close = 1;  in wlan_deinitialize_threads()
448 	complete(&wl->txq_event);  in wlan_deinitialize_threads()
450 	if (wl->txq_thread) {  in wlan_deinitialize_threads()
451 		kthread_stop(wl->txq_thread);  in wlan_deinitialize_threads()
452 		wl->txq_thread = NULL;  in wlan_deinitialize_threads()
459 	struct wilc *wl = vif->wilc;  in wilc_wlan_deinitialize()
466 	if (wl->initialized) {  in wilc_wlan_deinitialize()
469 		if (!wl->dev_irq_num &&  in wilc_wlan_deinitialize()
470 		    wl->hif_func->disable_interrupt) {  in wilc_wlan_deinitialize()
471 			mutex_lock(&wl->hif_cs);  in wilc_wlan_deinitialize()
472 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_deinitialize()
473 			mutex_unlock(&wl->hif_cs);  in wilc_wlan_deinitialize()
475 		complete(&wl->txq_event);  in wilc_wlan_deinitialize()
483 		wl->initialized = false;  in wilc_wlan_deinitialize()
487 		netdev_dbg(dev, "wilc1000 is not initialized\n");  in wilc_wlan_deinitialize()
494 	struct wilc *wilc = vif->wilc;  in wlan_initialize_threads()
496 	wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,  in wlan_initialize_threads()
497 				       "%s-tx", dev->name);  in wlan_initialize_threads()
498 	if (IS_ERR(wilc->txq_thread)) {  in wlan_initialize_threads()
500 		wilc->close = 1;  in wlan_initialize_threads()
501 		return PTR_ERR(wilc->txq_thread);  in wlan_initialize_threads()
503 	wait_for_completion(&wilc->txq_thread_started);  in wlan_initialize_threads()
511 	struct wilc *wl = vif->wilc;  in wilc_wlan_initialize()
513 	if (!wl->initialized) {  in wilc_wlan_initialize()
514 		wl->mac_status = WILC_MAC_STATUS_INIT;  in wilc_wlan_initialize()
515 		wl->close = 0;  in wilc_wlan_initialize()
525 		if (wl->dev_irq_num && init_irq(dev)) {  in wilc_wlan_initialize()
526 			ret = -EIO;  in wilc_wlan_initialize()
530 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
531 		    wl->hif_func->enable_interrupt &&  in wilc_wlan_initialize()
532 		    wl->hif_func->enable_interrupt(wl)) {  in wilc_wlan_initialize()
533 			ret = -EIO;  in wilc_wlan_initialize()
557 			netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);  in wilc_wlan_initialize()
562 			netdev_err(dev, "Failed to configure firmware\n");  in wilc_wlan_initialize()
565 		wl->initialized = true;  in wilc_wlan_initialize()
572 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
573 		    wl->hif_func->disable_interrupt)  in wilc_wlan_initialize()
574 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_initialize()
576 		if (wl->dev_irq_num)  in wilc_wlan_initialize()
584 		netdev_dbg(dev, "wilc1000 already initialized\n");  in wilc_wlan_initialize()
600 	struct wilc *wl = vif->wilc;  in wilc_mac_open()
604 	if (!wl || !wl->dev) {  in wilc_mac_open()
606 		return -ENODEV;  in wilc_mac_open()
621 	wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,  in wilc_mac_open()
622 				vif->idx);  in wilc_mac_open()
624 	netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);  in wilc_mac_open()
625 	ret = wilc_set_mac_address(vif, ndev->dev_addr);  in wilc_mac_open()
629 		if (!wl->open_ifcs)  in wilc_mac_open()
634 	mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;  in wilc_mac_open()
636 	vif->mgmt_reg_stypes = 0;  in wilc_mac_open()
637 	wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,  in wilc_mac_open()
638 					     vif->ndev->ieee80211_ptr,  in wilc_mac_open()
641 	wl->open_ifcs++;  in wilc_mac_open()
642 	vif->mac_opened = 1;  in wilc_mac_open()
650 	return &vif->netstats;  in mac_stats()
657 	struct wilc *wilc = vif->wilc;  in wilc_set_mac_addr()
663 	if (!is_valid_ether_addr(addr->sa_data))  in wilc_set_mac_addr()
664 		return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
666 	if (!vif->mac_opened) {  in wilc_set_mac_addr()
673 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_set_mac_addr()
676 		if (ether_addr_equal(addr->sa_data, mac_addr)) {  in wilc_set_mac_addr()
678 				srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
679 				return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
681 			srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
685 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
687 	result = wilc_set_mac_address(vif, addr->sa_data);  in wilc_set_mac_addr()
703 	if (dev->flags & IFF_PROMISC)  in wilc_set_multicast_list()
706 	if (dev->flags & IFF_ALLMULTI ||  in wilc_set_multicast_list()
707 	    dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {  in wilc_set_multicast_list()
712 	if (dev->mc.count == 0) {  in wilc_set_multicast_list()
717 	mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);  in wilc_set_multicast_list()
724 		memcpy(cur_mc, ha->addr, ETH_ALEN);  in wilc_set_multicast_list()
730 	if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))  in wilc_set_multicast_list()
738 	dev_kfree_skb(pv_data->skb);  in wilc_tx_complete()
745 	struct wilc *wilc = vif->wilc;  in wilc_mac_xmit()
749 	if (skb->dev != ndev) {  in wilc_mac_xmit()
762 	tx_data->buff = skb->data;  in wilc_mac_xmit()
763 	tx_data->size = skb->len;  in wilc_mac_xmit()
764 	tx_data->skb  = skb;  in wilc_mac_xmit()
766 	vif->netstats.tx_packets++;  in wilc_mac_xmit()
767 	vif->netstats.tx_bytes += tx_data->size;  in wilc_mac_xmit()
769 						tx_data->buff, tx_data->size,  in wilc_mac_xmit()
776 		srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_mac_xmit()
778 			if (vif->mac_opened)  in wilc_mac_xmit()
779 				netif_stop_queue(vif->ndev);  in wilc_mac_xmit()
781 		srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_mac_xmit()
790 	struct wilc *wl = vif->wilc;  in wilc_mac_close()
794 	if (wl->open_ifcs > 0)  in wilc_mac_close()
795 		wl->open_ifcs--;  in wilc_mac_close()
799 	if (vif->ndev) {  in wilc_mac_close()
800 		netif_stop_queue(vif->ndev);  in wilc_mac_close()
803 		wilc_deinit_host_int(vif->ndev);  in wilc_mac_close()
806 	if (wl->open_ifcs == 0) {  in wilc_mac_close()
808 		wl->close = 1;  in wilc_mac_close()
812 	vif->mac_opened = 0;  in wilc_mac_close()
831 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_frmw_to_host()
847 		skb->dev = wilc_netdev;  in wilc_frmw_to_host()
851 		skb->protocol = eth_type_trans(skb, wilc_netdev);  in wilc_frmw_to_host()
852 		vif->netstats.rx_packets++;  in wilc_frmw_to_host()
853 		vif->netstats.rx_bytes += frame_len;  in wilc_frmw_to_host()
854 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in wilc_frmw_to_host()
859 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_frmw_to_host()
867 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wfi_mgmt_rx()
874 		if ((vif->mgmt_reg_stypes & auth_bit &&  in wilc_wfi_mgmt_rx()
875 		     ieee80211_is_auth(mgmt->frame_control)) &&  in wilc_wfi_mgmt_rx()
876 		    vif->iftype == WILC_STATION_MODE && is_auth) {  in wilc_wfi_mgmt_rx()
881 		if (vif->priv.p2p_listen_state &&  in wilc_wfi_mgmt_rx()
882 		    vif->mgmt_reg_stypes & type_bit)  in wilc_wfi_mgmt_rx()
885 		if (vif->monitor_flag)  in wilc_wfi_mgmt_rx()
886 			wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);  in wilc_wfi_mgmt_rx()
888 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wfi_mgmt_rx()
908 	if (wilc->firmware) {  in wilc_netdev_cleanup()
909 		release_firmware(wilc->firmware);  in wilc_netdev_cleanup()
910 		wilc->firmware = NULL;  in wilc_netdev_cleanup()
913 	list_for_each_entry_safe(vif, vif_tmp, &wilc->vif_list, list) {  in wilc_netdev_cleanup()
914 		mutex_lock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
915 		list_del_rcu(&vif->list);  in wilc_netdev_cleanup()
916 		wilc->vif_num--;  in wilc_netdev_cleanup()
917 		mutex_unlock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
918 		synchronize_srcu(&wilc->srcu);  in wilc_netdev_cleanup()
919 		if (vif->ndev)  in wilc_netdev_cleanup()
920 			unregister_netdev(vif->ndev);  in wilc_netdev_cleanup()
924 	destroy_workqueue(wilc->hif_workqueue);  in wilc_netdev_cleanup()
937 	srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_get_available_idx()
939 		if (vif->idx == 0)  in wilc_get_available_idx()
944 	srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_get_available_idx()
959 		return ERR_PTR(-ENOMEM);  in wilc_netdev_ifc_init()
962 	ndev->ieee80211_ptr = &vif->priv.wdev;  in wilc_netdev_ifc_init()
963 	strcpy(ndev->name, name);  in wilc_netdev_ifc_init()
964 	vif->wilc = wl;  in wilc_netdev_ifc_init()
965 	vif->ndev = ndev;  in wilc_netdev_ifc_init()
966 	ndev->ml_priv = vif;  in wilc_netdev_ifc_init()
968 	ndev->netdev_ops = &wilc_netdev_ops;  in wilc_netdev_ifc_init()
970 	SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));  in wilc_netdev_ifc_init()
972 	vif->priv.wdev.wiphy = wl->wiphy;  in wilc_netdev_ifc_init()
973 	vif->priv.wdev.netdev = ndev;  in wilc_netdev_ifc_init()
974 	vif->priv.wdev.iftype = type;  in wilc_netdev_ifc_init()
975 	vif->priv.dev = ndev;  in wilc_netdev_ifc_init()
977 	ndev->needs_free_netdev = true;  in wilc_netdev_ifc_init()
978 	vif->iftype = vif_type;  in wilc_netdev_ifc_init()
979 	vif->idx = wilc_get_available_idx(wl);  in wilc_netdev_ifc_init()
980 	vif->mac_opened = 0;  in wilc_netdev_ifc_init()
982 	memcpy(mac_address, wl->nv_mac_address, ETH_ALEN);  in wilc_netdev_ifc_init()
983 	/* WILC firmware uses locally administered MAC address for the  in wilc_netdev_ifc_init()
988 	if (vif->idx)  in wilc_netdev_ifc_init()
991 	eth_hw_addr_set(vif->ndev, mac_address);  in wilc_netdev_ifc_init()
993 	mutex_lock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
994 	list_add_tail_rcu(&vif->list, &wl->vif_list);  in wilc_netdev_ifc_init()
995 	wl->vif_num += 1;  in wilc_netdev_ifc_init()
996 	mutex_unlock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
997 	synchronize_srcu(&wl->srcu);  in wilc_netdev_ifc_init()
1005 		ret = -EFAULT;  in wilc_netdev_ifc_init()
1012 	mutex_lock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
1013 	list_del_rcu(&vif->list);  in wilc_netdev_ifc_init()
1014 	wl->vif_num -= 1;  in wilc_netdev_ifc_init()
1015 	mutex_unlock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
1016 	synchronize_srcu(&wl->srcu);  in wilc_netdev_ifc_init()