1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
9 #include <linux/firmware.h>
21 #define WILC1000_FW_PREFIX		"atmel/wilc1000_wifi_firmware-"
29 	if (wilc->close) {  in isr_uh_routine()
40 	if (wilc->close) {  in isr_bh_routine()
53 	struct wilc *wl = vif->wilc;  in init_irq()
56 	ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,  in init_irq()
64 	netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);  in init_irq()
72 	struct wilc *wilc = vif->wilc;  in deinit_irq()
75 	if (wilc->dev_irq_num)  in deinit_irq()
76 		free_irq(wilc->dev_irq_num, wilc);  in deinit_irq()
84 	if (wilc->mac_status == WILC_MAC_STATUS_INIT) {  in wilc_mac_indicate()
85 		wilc->mac_status = status;  in wilc_mac_indicate()
86 		complete(&wilc->sync_event);  in wilc_mac_indicate()
88 		wilc->mac_status = status;  in wilc_mac_indicate()
98 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in get_if_handler()
99 		if (vif->mode == WILC_STATION_MODE)  in get_if_handler()
100 			if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {  in get_if_handler()
101 				ndev = vif->ndev;  in get_if_handler()
104 		if (vif->mode == WILC_AP_MODE)  in get_if_handler()
105 			if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {  in get_if_handler()
106 				ndev = vif->ndev;  in get_if_handler()
119 		ether_addr_copy(vif->bssid, bssid);  in wilc_wlan_set_bssid()
121 		eth_zero_addr(vif->bssid);  in wilc_wlan_set_bssid()
123 	vif->mode = mode;  in wilc_wlan_set_bssid()
132 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wlan_get_num_conn_ifcs()
133 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_wlan_get_num_conn_ifcs()
134 		if (!is_zero_ether_addr(vif->bssid))  in wilc_wlan_get_num_conn_ifcs()
137 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wlan_get_num_conn_ifcs()
147 	complete(&wl->txq_thread_started);  in wilc_txq_task()
149 		wait_for_completion(&wl->txq_event);  in wilc_txq_task()
151 		if (wl->close) {  in wilc_txq_task()
152 			complete(&wl->txq_thread_started);  in wilc_txq_task()
164 				srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_txq_task()
165 				list_for_each_entry_rcu(ifc, &wl->vif_list,  in wilc_txq_task()
167 					if (ifc->mac_opened && ifc->ndev)  in wilc_txq_task()
168 						netif_wake_queue(ifc->ndev);  in wilc_txq_task()
170 				srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_txq_task()
172 		} while (ret == WILC_VMM_ENTRY_FULL_RETRY && !wl->close);  in wilc_txq_task()
180 	struct wilc *wilc = vif->wilc;  in wilc_wlan_get_firmware()
182 	const struct firmware *wilc_fw;  in wilc_wlan_get_firmware()
187 	netdev_info(dev, "ChipID [%x] loading firmware [%s]\n", chip_id,  in wilc_wlan_get_firmware()
191 			       wilc->dev);  in wilc_wlan_get_firmware()
193 		netdev_err(dev, "%s - firmware not available\n",  in wilc_wlan_get_firmware()
195 		return -EINVAL;  in wilc_wlan_get_firmware()
197 	wilc->firmware = wilc_fw;  in wilc_wlan_get_firmware()
205 	struct wilc *wilc = vif->wilc;  in wilc_start_firmware()
212 	if (!wait_for_completion_timeout(&wilc->sync_event,  in wilc_start_firmware()
214 		return -ETIME;  in wilc_start_firmware()
222 	struct wilc *wilc = vif->wilc;  in wilc1000_firmware_download()
225 	if (!wilc->firmware) {  in wilc1000_firmware_download()
226 		netdev_err(dev, "Firmware buffer is NULL\n");  in wilc1000_firmware_download()
227 		return -ENOBUFS;  in wilc1000_firmware_download()
230 	ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,  in wilc1000_firmware_download()
231 					  wilc->firmware->size);  in wilc1000_firmware_download()
235 	release_firmware(wilc->firmware);  in wilc1000_firmware_download()
236 	wilc->firmware = NULL;  in wilc1000_firmware_download()
245 	struct wilc_priv *priv = &vif->priv;  in wilc_init_fw_config()
251 	netdev_dbg(dev, "Start configuring Firmware\n");  in wilc_init_fw_config()
252 	hif_drv = (struct host_if_drv *)priv->hif_drv;  in wilc_init_fw_config()
255 	w = vif->iftype;  in wilc_init_fw_config()
411 	return -EINVAL;  in wilc_init_fw_config()
417 	struct wilc *wl = vif->wilc;  in wlan_deinitialize_threads()
419 	wl->close = 1;  in wlan_deinitialize_threads()
421 	complete(&wl->txq_event);  in wlan_deinitialize_threads()
423 	if (wl->txq_thread) {  in wlan_deinitialize_threads()
424 		kthread_stop(wl->txq_thread);  in wlan_deinitialize_threads()
425 		wl->txq_thread = NULL;  in wlan_deinitialize_threads()
432 	struct wilc *wl = vif->wilc;  in wilc_wlan_deinitialize()
439 	if (wl->initialized) {  in wilc_wlan_deinitialize()
442 		if (!wl->dev_irq_num &&  in wilc_wlan_deinitialize()
443 		    wl->hif_func->disable_interrupt) {  in wilc_wlan_deinitialize()
444 			mutex_lock(&wl->hif_cs);  in wilc_wlan_deinitialize()
445 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_deinitialize()
446 			mutex_unlock(&wl->hif_cs);  in wilc_wlan_deinitialize()
448 		complete(&wl->txq_event);  in wilc_wlan_deinitialize()
456 		wl->initialized = false;  in wilc_wlan_deinitialize()
460 		netdev_dbg(dev, "wilc1000 is not initialized\n");  in wilc_wlan_deinitialize()
467 	struct wilc *wilc = vif->wilc;  in wlan_initialize_threads()
469 	wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,  in wlan_initialize_threads()
471 	if (IS_ERR(wilc->txq_thread)) {  in wlan_initialize_threads()
473 		wilc->close = 0;  in wlan_initialize_threads()
474 		return PTR_ERR(wilc->txq_thread);  in wlan_initialize_threads()
476 	wait_for_completion(&wilc->txq_thread_started);  in wlan_initialize_threads()
484 	struct wilc *wl = vif->wilc;  in wilc_wlan_initialize()
486 	if (!wl->initialized) {  in wilc_wlan_initialize()
487 		wl->mac_status = WILC_MAC_STATUS_INIT;  in wilc_wlan_initialize()
488 		wl->close = 0;  in wilc_wlan_initialize()
498 		if (wl->dev_irq_num && init_irq(dev)) {  in wilc_wlan_initialize()
499 			ret = -EIO;  in wilc_wlan_initialize()
503 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
504 		    wl->hif_func->enable_interrupt &&  in wilc_wlan_initialize()
505 		    wl->hif_func->enable_interrupt(wl)) {  in wilc_wlan_initialize()
506 			ret = -EIO;  in wilc_wlan_initialize()
530 			netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);  in wilc_wlan_initialize()
535 			netdev_err(dev, "Failed to configure firmware\n");  in wilc_wlan_initialize()
538 		wl->initialized = true;  in wilc_wlan_initialize()
545 		if (!wl->dev_irq_num &&  in wilc_wlan_initialize()
546 		    wl->hif_func->disable_interrupt)  in wilc_wlan_initialize()
547 			wl->hif_func->disable_interrupt(wl);  in wilc_wlan_initialize()
549 		if (wl->dev_irq_num)  in wilc_wlan_initialize()
557 		netdev_dbg(dev, "wilc1000 already initialized\n");  in wilc_wlan_initialize()
573 	struct wilc *wl = vif->wilc;  in wilc_mac_open()
577 	if (!wl || !wl->dev) {  in wilc_mac_open()
579 		return -ENODEV;  in wilc_mac_open()
594 	wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,  in wilc_mac_open()
595 				vif->idx);  in wilc_mac_open()
597 	if (is_valid_ether_addr(ndev->dev_addr))  in wilc_mac_open()
598 		wilc_set_mac_address(vif, ndev->dev_addr);  in wilc_mac_open()
600 		wilc_get_mac_address(vif, ndev->dev_addr);  in wilc_mac_open()
601 	netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);  in wilc_mac_open()
603 	if (!is_valid_ether_addr(ndev->dev_addr)) {  in wilc_mac_open()
607 		return -EINVAL;  in wilc_mac_open()
610 	mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;  in wilc_mac_open()
612 	vif->mgmt_reg_stypes = 0;  in wilc_mac_open()
613 	wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,  in wilc_mac_open()
614 					     vif->ndev->ieee80211_ptr,  in wilc_mac_open()
617 	wl->open_ifcs++;  in wilc_mac_open()
618 	vif->mac_opened = 1;  in wilc_mac_open()
626 	return &vif->netstats;  in mac_stats()
633 	struct wilc *wilc = vif->wilc;  in wilc_set_mac_addr()
639 	if (!is_valid_ether_addr(addr->sa_data))  in wilc_set_mac_addr()
640 		return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
642 	if (!vif->mac_opened) {  in wilc_set_mac_addr()
649 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_set_mac_addr()
650 	list_for_each_entry_rcu(tmp_vif, &wilc->vif_list, list) {  in wilc_set_mac_addr()
652 		if (ether_addr_equal(addr->sa_data, mac_addr)) {  in wilc_set_mac_addr()
654 				srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
655 				return -EADDRNOTAVAIL;  in wilc_set_mac_addr()
657 			srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
661 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_set_mac_addr()
663 	result = wilc_set_mac_address(vif, (u8 *)addr->sa_data);  in wilc_set_mac_addr()
679 	if (dev->flags & IFF_PROMISC)  in wilc_set_multicast_list()
682 	if (dev->flags & IFF_ALLMULTI ||  in wilc_set_multicast_list()
683 	    dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {  in wilc_set_multicast_list()
688 	if (dev->mc.count == 0) {  in wilc_set_multicast_list()
693 	mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);  in wilc_set_multicast_list()
700 		memcpy(cur_mc, ha->addr, ETH_ALEN);  in wilc_set_multicast_list()
706 	if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))  in wilc_set_multicast_list()
714 	dev_kfree_skb(pv_data->skb);  in wilc_tx_complete()
721 	struct wilc *wilc = vif->wilc;  in wilc_mac_xmit()
725 	if (skb->dev != ndev) {  in wilc_mac_xmit()
737 	tx_data->buff = skb->data;  in wilc_mac_xmit()
738 	tx_data->size = skb->len;  in wilc_mac_xmit()
739 	tx_data->skb  = skb;  in wilc_mac_xmit()
741 	vif->netstats.tx_packets++;  in wilc_mac_xmit()
742 	vif->netstats.tx_bytes += tx_data->size;  in wilc_mac_xmit()
744 						tx_data->buff, tx_data->size,  in wilc_mac_xmit()
751 		srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_mac_xmit()
752 		list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_mac_xmit()
753 			if (vif->mac_opened)  in wilc_mac_xmit()
754 				netif_stop_queue(vif->ndev);  in wilc_mac_xmit()
756 		srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_mac_xmit()
765 	struct wilc *wl = vif->wilc;  in wilc_mac_close()
769 	if (wl->open_ifcs > 0)  in wilc_mac_close()
770 		wl->open_ifcs--;  in wilc_mac_close()
774 	if (vif->ndev) {  in wilc_mac_close()
775 		netif_stop_queue(vif->ndev);  in wilc_mac_close()
777 		wilc_deinit_host_int(vif->ndev);  in wilc_mac_close()
780 	if (wl->open_ifcs == 0) {  in wilc_mac_close()
782 		wl->close = 1;  in wilc_mac_close()
786 	vif->mac_opened = 0;  in wilc_mac_close()
819 		skb->dev = wilc_netdev;  in wilc_frmw_to_host()
823 		skb->protocol = eth_type_trans(skb, wilc_netdev);  in wilc_frmw_to_host()
824 		vif->netstats.rx_packets++;  in wilc_frmw_to_host()
825 		vif->netstats.rx_bytes += frame_len;  in wilc_frmw_to_host()
826 		skb->ip_summed = CHECKSUM_UNNECESSARY;  in wilc_frmw_to_host()
837 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_wfi_mgmt_rx()
838 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_wfi_mgmt_rx()
842 		if (vif->priv.p2p_listen_state &&  in wilc_wfi_mgmt_rx()
843 		    vif->mgmt_reg_stypes & type_bit)  in wilc_wfi_mgmt_rx()
846 		if (vif->monitor_flag)  in wilc_wfi_mgmt_rx()
847 			wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);  in wilc_wfi_mgmt_rx()
849 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_wfi_mgmt_rx()
870 	if (wilc->firmware) {  in wilc_netdev_cleanup()
871 		release_firmware(wilc->firmware);  in wilc_netdev_cleanup()
872 		wilc->firmware = NULL;  in wilc_netdev_cleanup()
875 	srcu_idx = srcu_read_lock(&wilc->srcu);  in wilc_netdev_cleanup()
876 	list_for_each_entry_rcu(vif, &wilc->vif_list, list) {  in wilc_netdev_cleanup()
877 		if (vif->ndev)  in wilc_netdev_cleanup()
878 			unregister_netdev(vif->ndev);  in wilc_netdev_cleanup()
880 	srcu_read_unlock(&wilc->srcu, srcu_idx);  in wilc_netdev_cleanup()
883 	flush_workqueue(wilc->hif_workqueue);  in wilc_netdev_cleanup()
884 	destroy_workqueue(wilc->hif_workqueue);  in wilc_netdev_cleanup()
887 		mutex_lock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
888 		if (wilc->vif_num <= 0) {  in wilc_netdev_cleanup()
889 			mutex_unlock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
894 			list_del_rcu(&vif->list);  in wilc_netdev_cleanup()
896 		wilc->vif_num--;  in wilc_netdev_cleanup()
897 		mutex_unlock(&wilc->vif_mutex);  in wilc_netdev_cleanup()
898 		synchronize_srcu(&wilc->srcu);  in wilc_netdev_cleanup()
904 	kfree(wilc->bus_data);  in wilc_netdev_cleanup()
905 	wiphy_unregister(wilc->wiphy);  in wilc_netdev_cleanup()
906 	wiphy_free(wilc->wiphy);  in wilc_netdev_cleanup()
916 	srcu_idx = srcu_read_lock(&wl->srcu);  in wilc_get_available_idx()
917 	list_for_each_entry_rcu(vif, &wl->vif_list, list) {  in wilc_get_available_idx()
918 		if (vif->idx == 0)  in wilc_get_available_idx()
923 	srcu_read_unlock(&wl->srcu, srcu_idx);  in wilc_get_available_idx()
937 		return ERR_PTR(-ENOMEM);  in wilc_netdev_ifc_init()
940 	ndev->ieee80211_ptr = &vif->priv.wdev;  in wilc_netdev_ifc_init()
941 	strcpy(ndev->name, name);  in wilc_netdev_ifc_init()
942 	vif->wilc = wl;  in wilc_netdev_ifc_init()
943 	vif->ndev = ndev;  in wilc_netdev_ifc_init()
944 	ndev->ml_priv = vif;  in wilc_netdev_ifc_init()
946 	ndev->netdev_ops = &wilc_netdev_ops;  in wilc_netdev_ifc_init()
948 	SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));  in wilc_netdev_ifc_init()
950 	vif->priv.wdev.wiphy = wl->wiphy;  in wilc_netdev_ifc_init()
951 	vif->priv.wdev.netdev = ndev;  in wilc_netdev_ifc_init()
952 	vif->priv.wdev.iftype = type;  in wilc_netdev_ifc_init()
953 	vif->priv.dev = ndev;  in wilc_netdev_ifc_init()
962 		return ERR_PTR(-EFAULT);  in wilc_netdev_ifc_init()
965 	ndev->needs_free_netdev = true;  in wilc_netdev_ifc_init()
966 	vif->iftype = vif_type;  in wilc_netdev_ifc_init()
967 	vif->idx = wilc_get_available_idx(wl);  in wilc_netdev_ifc_init()
968 	vif->mac_opened = 0;  in wilc_netdev_ifc_init()
969 	mutex_lock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
970 	list_add_tail_rcu(&vif->list, &wl->vif_list);  in wilc_netdev_ifc_init()
971 	wl->vif_num += 1;  in wilc_netdev_ifc_init()
972 	mutex_unlock(&wl->vif_mutex);  in wilc_netdev_ifc_init()
973 	synchronize_srcu(&wl->srcu);  in wilc_netdev_ifc_init()