diff options
Diffstat (limited to 'drivers/staging/wilc1000/wilc_netdev.c')
| -rw-r--r-- | drivers/staging/wilc1000/wilc_netdev.c | 1079 |
1 files changed, 1079 insertions, 0 deletions
diff --git a/drivers/staging/wilc1000/wilc_netdev.c b/drivers/staging/wilc1000/wilc_netdev.c new file mode 100644 index 000000000000..1787154ee088 --- /dev/null +++ b/drivers/staging/wilc1000/wilc_netdev.c @@ -0,0 +1,1079 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries. + * All rights reserved. + */ + +#include <linux/irq.h> +#include <linux/kthread.h> +#include <linux/firmware.h> +#include <linux/netdevice.h> +#include <linux/inetdevice.h> + +#include "wilc_wfi_cfgoperations.h" + +#define WILC_MULTICAST_TABLE_SIZE 8 + +static irqreturn_t isr_uh_routine(int irq, void *user_data) +{ + struct net_device *dev = user_data; + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + + if (wilc->close) { + netdev_err(dev, "Can't handle UH interrupt\n"); + return IRQ_HANDLED; + } + return IRQ_WAKE_THREAD; +} + +static irqreturn_t isr_bh_routine(int irq, void *userdata) +{ + struct net_device *dev = userdata; + struct wilc_vif *vif = netdev_priv(userdata); + struct wilc *wilc = vif->wilc; + + if (wilc->close) { + netdev_err(dev, "Can't handle BH interrupt\n"); + return IRQ_HANDLED; + } + + wilc_handle_isr(wilc); + + return IRQ_HANDLED; +} + +static int init_irq(struct net_device *dev) +{ + int ret = 0; + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wl = vif->wilc; + + ret = gpiod_direction_input(wl->gpio_irq); + if (ret) { + netdev_err(dev, "could not obtain gpio for WILC_INTR\n"); + return ret; + } + + wl->dev_irq_num = gpiod_to_irq(wl->gpio_irq); + + ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine, + isr_bh_routine, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "WILC_IRQ", dev); + if (ret < 0) + netdev_err(dev, "Failed to request IRQ\n"); + else + netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", + wl->dev_irq_num); + + return ret; +} + +static void deinit_irq(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + + /* Deinitialize IRQ */ + if (wilc->dev_irq_num) + free_irq(wilc->dev_irq_num, wilc); +} + +void wilc_mac_indicate(struct wilc *wilc) +{ + s8 status; + + wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1); + if (wilc->mac_status == WILC_MAC_STATUS_INIT) { + wilc->mac_status = status; + complete(&wilc->sync_event); + } else { + wilc->mac_status = status; + } +} + +static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header) +{ + u8 *bssid, *bssid1; + int i = 0; + + bssid = mac_header + 10; + bssid1 = mac_header + 4; + + for (i = 0; i < wilc->vif_num; i++) { + if (wilc->vif[i]->mode == WILC_STATION_MODE) + if (ether_addr_equal_unaligned(bssid, + wilc->vif[i]->bssid)) + return wilc->vif[i]->ndev; + if (wilc->vif[i]->mode == WILC_AP_MODE) + if (ether_addr_equal_unaligned(bssid1, + wilc->vif[i]->bssid)) + return wilc->vif[i]->ndev; + } + + return NULL; +} + +void wilc_wlan_set_bssid(struct net_device *wilc_netdev, u8 *bssid, u8 mode) +{ + struct wilc_vif *vif = netdev_priv(wilc_netdev); + + if (bssid) + ether_addr_copy(vif->bssid, bssid); + else + eth_zero_addr(vif->bssid); + + vif->mode = mode; +} + +int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc) +{ + u8 i = 0; + u8 ret_val = 0; + + for (i = 0; i < wilc->vif_num; i++) + if (!is_zero_ether_addr(wilc->vif[i]->bssid)) + ret_val++; + + return ret_val; +} + +static int wilc_txq_task(void *vp) +{ + int ret; + u32 txq_count; + struct net_device *dev = vp; + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wl = vif->wilc; + + complete(&wl->txq_thread_started); + while (1) { + wait_for_completion(&wl->txq_event); + + if (wl->close) { + complete(&wl->txq_thread_started); + + while (!kthread_should_stop()) + schedule(); + break; + } + do { + ret = wilc_wlan_handle_txq(dev, &txq_count); + if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) { + if (wl->vif[0]->mac_opened && + netif_queue_stopped(wl->vif[0]->ndev)) + netif_wake_queue(wl->vif[0]->ndev); + if (wl->vif[1]->mac_opened && + netif_queue_stopped(wl->vif[1]->ndev)) + netif_wake_queue(wl->vif[1]->ndev); + } + } while (ret == -ENOBUFS && !wl->close); + } + return 0; +} + +static int wilc_wlan_get_firmware(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + int chip_id, ret = 0; + const struct firmware *wilc_firmware; + char *firmware; + + chip_id = wilc_get_chipid(wilc, false); + + if (chip_id < 0x1003a0) + firmware = FIRMWARE_1002; + else + firmware = FIRMWARE_1003; + + netdev_info(dev, "loading firmware %s\n", firmware); + + if (request_firmware(&wilc_firmware, firmware, wilc->dev) != 0) { + netdev_err(dev, "%s - firmware not available\n", firmware); + ret = -1; + goto fail; + } + wilc->firmware = wilc_firmware; + +fail: + + return ret; +} + +static int wilc_start_firmware(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + int ret = 0; + + ret = wilc_wlan_start(wilc); + if (ret < 0) + return ret; + + if (!wait_for_completion_timeout(&wilc->sync_event, + msecs_to_jiffies(5000))) + return -ETIME; + + return 0; +} + +static int wilc1000_firmware_download(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + int ret = 0; + + if (!wilc->firmware) { + netdev_err(dev, "Firmware buffer is NULL\n"); + return -ENOBUFS; + } + + ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data, + wilc->firmware->size); + if (ret < 0) + return ret; + + release_firmware(wilc->firmware); + wilc->firmware = NULL; + + netdev_dbg(dev, "Download Succeeded\n"); + + return 0; +} + +static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif) +{ + struct wilc_priv *priv; + struct host_if_drv *hif_drv; + u8 b; + u16 hw; + u32 w; + + netdev_dbg(dev, "Start configuring Firmware\n"); + priv = wiphy_priv(dev->ieee80211_ptr->wiphy); + hif_drv = (struct host_if_drv *)priv->hif_drv; + netdev_dbg(dev, "Host = %p\n", hif_drv); + + w = vif->iftype; + cpu_to_le32s(&w); + if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4, + 0, 0)) + goto fail; + + b = WILC_FW_BSS_TYPE_INFRA; + if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_TX_RATE_AUTO; + if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_OPER_MODE_G_MIXED_11B_2; + if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_PREAMBLE_SHORT; + if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_11N_PROT_AUTO; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_ACTIVE_SCAN; + if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_SITE_SURVEY_OFF; + if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0)) + goto fail; + + hw = 0xffff; + cpu_to_le16s(&hw); + if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0)) + goto fail; + + hw = 2346; + cpu_to_le16s(&hw); + if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0)) + goto fail; + + b = 0; + if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0)) + goto fail; + + b = 1; + if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_NO_POWERSAVE; + if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_SEC_NO; + if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_AUTH_OPEN_SYSTEM; + if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0)) + goto fail; + + b = 3; + if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0)) + goto fail; + + b = 3; + if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_ACK_POLICY_NORMAL; + if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0)) + goto fail; + + b = 0; + if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1, + 0, 0)) + goto fail; + + b = 48; + if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0)) + goto fail; + + b = 28; + if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0)) + goto fail; + + hw = 100; + cpu_to_le16s(&hw); + if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0)) + goto fail; + + b = WILC_FW_REKEY_POLICY_DISABLE; + if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0)) + goto fail; + + w = 84600; + cpu_to_le32s(&w); + if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0)) + goto fail; + + w = 500; + cpu_to_le32s(&w); + if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0, + 0)) + goto fail; + + b = 1; + if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0, + 0)) + goto fail; + + b = WILC_FW_ERP_PROT_SELF_CTS; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0)) + goto fail; + + b = 1; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_11N_OP_MODE_HT_MIXED; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0)) + goto fail; + + b = 1; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0)) + goto fail; + + b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1, + 0, 0)) + goto fail; + + b = WILC_FW_HT_PROT_RTS_CTS_NONHT; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0)) + goto fail; + + b = 0; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0, + 0)) + goto fail; + + b = 7; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0)) + goto fail; + + b = 1; + if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1, + 1, 1)) + goto fail; + + return 0; + +fail: + return -1; +} + +static void wlan_deinit_locks(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + + mutex_destroy(&wilc->hif_cs); + mutex_destroy(&wilc->rxq_cs); + mutex_destroy(&wilc->cfg_cmd_lock); + mutex_destroy(&wilc->txq_add_to_head_cs); +} + +static void wlan_deinitialize_threads(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wl = vif->wilc; + + wl->close = 1; + + complete(&wl->txq_event); + + if (wl->txq_thread) { + kthread_stop(wl->txq_thread); + wl->txq_thread = NULL; + } +} + +static void wilc_wlan_deinitialize(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wl = vif->wilc; + + if (!wl) { + netdev_err(dev, "wl is NULL\n"); + return; + } + + if (wl->initialized) { + netdev_info(dev, "Deinitializing wilc1000...\n"); + + if (!wl->dev_irq_num && + wl->hif_func->disable_interrupt) { + mutex_lock(&wl->hif_cs); + wl->hif_func->disable_interrupt(wl); + mutex_unlock(&wl->hif_cs); + } + complete(&wl->txq_event); + + wlan_deinitialize_threads(dev); + deinit_irq(dev); + + wilc_wlan_stop(wl); + wilc_wlan_cleanup(dev); + wlan_deinit_locks(dev); + + wl->initialized = false; + + netdev_dbg(dev, "wilc1000 deinitialization Done\n"); + } else { + netdev_dbg(dev, "wilc1000 is not initialized\n"); + } +} + +static void wlan_init_locks(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wl = vif->wilc; + + mutex_init(&wl->hif_cs); + mutex_init(&wl->rxq_cs); + mutex_init(&wl->cfg_cmd_lock); + + spin_lock_init(&wl->txq_spinlock); + mutex_init(&wl->txq_add_to_head_cs); + + init_completion(&wl->txq_event); + + init_completion(&wl->cfg_event); + init_completion(&wl->sync_event); + init_completion(&wl->txq_thread_started); +} + +static int wlan_initialize_threads(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + struct wilc *wilc = vif->wilc; + + wilc->txq_thread = kthread_run(wilc_txq_task, (void *)dev, + "K_TXQ_TASK"); + if (IS_ERR(wilc->txq_thread)) { + netdev_err(dev, "couldn't create TXQ thread\n"); + wilc->close = 0; + return PTR_ERR(wilc->txq_thread); + } + wait_for_completion(&wilc->txq_thread_started); + + return 0; +} + +static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif) +{ + int ret = 0; + struct wilc *wl = vif->wilc; + + if (!wl->initialized) { + wl->mac_status = WILC_MAC_STATUS_INIT; + wl->close = 0; + + wlan_init_locks(dev); + + ret = wilc_wlan_init(dev); + if (ret < 0) { + ret = -EIO; + goto fail_locks; + } + + if (wl->gpio_irq && init_irq(dev)) { + ret = -EIO; + goto fail_locks; + } + + ret = wlan_initialize_threads(dev); + if (ret < 0) { + ret = -EIO; + goto fail_wilc_wlan; + } + + if (!wl->dev_irq_num && + wl->hif_func->enable_interrupt && + wl->hif_func->enable_interrupt(wl)) { + ret = -EIO; + goto fail_irq_init; + } + + if (wilc_wlan_get_firmware(dev)) { + ret = -EIO; + goto fail_irq_enable; + } + + ret = wilc1000_firmware_download(dev); + if (ret < 0) { + ret = -EIO; + goto fail_irq_enable; + } + + ret = wilc_start_firmware(dev); + if (ret < 0) { + ret = -EIO; + goto fail_irq_enable; + } + + if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) { + int size; + char firmware_ver[20]; + + size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION, + firmware_ver, + sizeof(firmware_ver)); + firmware_ver[size] = '\0'; + netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver); + } + ret = wilc_init_fw_config(dev, vif); + + if (ret < 0) { + netdev_err(dev, "Failed to configure firmware\n"); + ret = -EIO; + goto fail_fw_start; + } + + wl->initialized = true; + return 0; + +fail_fw_start: + wilc_wlan_stop(wl); + +fail_irq_enable: + if (!wl->dev_irq_num && + wl->hif_func->disable_interrupt) + wl->hif_func->disable_interrupt(wl); +fail_irq_init: + if (wl->dev_irq_num) + deinit_irq(dev); + + wlan_deinitialize_threads(dev); +fail_wilc_wlan: + wilc_wlan_cleanup(dev); +fail_locks: + wlan_deinit_locks(dev); + netdev_err(dev, "WLAN initialization FAILED\n"); + } else { + netdev_dbg(dev, "wilc1000 already initialized\n"); + } + return ret; +} + +static int mac_init_fn(struct net_device *ndev) +{ + netif_start_queue(ndev); + netif_stop_queue(ndev); + + return 0; +} + +static int wilc_mac_open(struct net_device *ndev) +{ + struct wilc_vif *vif = netdev_priv(ndev); + struct wilc *wl = vif->wilc; + struct wilc_priv *priv = wdev_priv(vif->ndev->ieee80211_ptr); + unsigned char mac_add[ETH_ALEN] = {0}; + int ret = 0; + int i = 0; + + if (!wl || !wl->dev) { + netdev_err(ndev, "device not ready\n"); + return -ENODEV; + } + + netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev); + + ret = wilc_init_host_int(ndev); + if (ret < 0) + return ret; + + ret = wilc_wlan_initialize(ndev, vif); + if (ret < 0) { + wilc_deinit_host_int(ndev); + return ret; + } + + for (i = 0; i < wl->vif_num; i++) { + if (ndev == wl->vif[i]->ndev) { + wilc_set_wfi_drv_handler(vif, wilc_get_vif_idx(vif), + vif->iftype, vif->ifc_id); + wilc_set_operation_mode(vif, vif->iftype); + break; + } + } + + wilc_get_mac_address(vif, mac_add); + netdev_dbg(ndev, "Mac address: %pM\n", mac_add); + memcpy(wl->vif[i]->src_addr, mac_add, ETH_ALEN); + memcpy(ndev->dev_addr, wl->vif[i]->src_addr, ETH_ALEN); + + if (!is_valid_ether_addr(ndev->dev_addr)) { + netdev_err(ndev, "Wrong MAC address\n"); + wilc_deinit_host_int(ndev); + wilc_wlan_deinitialize(ndev); + return -EINVAL; + } + + wilc_mgmt_frame_register(vif->ndev->ieee80211_ptr->wiphy, + vif->ndev->ieee80211_ptr, + vif->frame_reg[0].type, + vif->frame_reg[0].reg); + wilc_mgmt_frame_register(vif->ndev->ieee80211_ptr->wiphy, + vif->ndev->ieee80211_ptr, + vif->frame_reg[1].type, + vif->frame_reg[1].reg); + netif_wake_queue(ndev); + wl->open_ifcs++; + priv->p2p.local_random = 0x01; + vif->mac_opened = 1; + return 0; +} + +static struct net_device_stats *mac_stats(struct net_device *dev) +{ + struct wilc_vif *vif = netdev_priv(dev); + + return &vif->netstats; +} + +static void wilc_set_multicast_list(struct net_device *dev) +{ + struct netdev_hw_addr *ha; + struct wilc_vif *vif = netdev_priv(dev); + int i; + u8 *mc_list; + u8 *cur_mc; + + if (dev->flags & IFF_PROMISC) + return; + + if (dev->flags & IFF_ALLMULTI || + dev->mc.count > WILC_MULTICAST_TABLE_SIZE) { + wilc_setup_multicast_filter(vif, 0, 0, NULL); + return; + } + + if (dev->mc.count == 0) { + wilc_setup_multicast_filter(vif, 1, 0, NULL); + return; + } + + mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_KERNEL); + if (!mc_list) + return; + + cur_mc = mc_list; + i = 0; + netdev_for_each_mc_addr(ha, dev) { + memcpy(cur_mc, ha->addr, ETH_ALEN); + netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc); + i++; + cur_mc += ETH_ALEN; + } + + if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list)) + kfree(mc_list); +} + +static void wilc_tx_complete(void *priv, int status) +{ + struct tx_complete_data *pv_data = priv; + + dev_kfree_skb(pv_data->skb); + kfree(pv_data); +} + +netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev) +{ + struct wilc_vif *vif = netdev_priv(ndev); + struct wilc *wilc = vif->wilc; + struct tx_complete_data *tx_data = NULL; + int queue_count; + + if (skb->dev != ndev) { + netdev_err(ndev, "Packet not destined to this device\n"); + return 0; + } + + tx_data = kmalloc(sizeof(*tx_data), GFP_ATOMIC); + if (!tx_data) { + dev_kfree_skb(skb); + netif_wake_queue(ndev); + return 0; + } + + tx_data->buff = skb->data; + tx_data->size = skb->len; + tx_data->skb = skb; + + vif->netstats.tx_packets++; + vif->netstats.tx_bytes += tx_data->size; + tx_data->bssid = wilc->vif[vif->idx]->bssid; + queue_count = wilc_wlan_txq_add_net_pkt(ndev, (void *)tx_data, + tx_data->buff, tx_data->size, + wilc_tx_complete); + + if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) { + if (wilc->vif[0]->mac_opened) + netif_stop_queue(wilc->vif[0]->ndev); + if (wilc->vif[1]->mac_opened) + netif_stop_queue(wilc->vif[1]->ndev); + } + + return 0; +} + +static int wilc_mac_close(struct net_device *ndev) +{ + struct wilc_vif *vif = netdev_priv(ndev); + struct wilc *wl = vif->wilc; + + netdev_dbg(ndev, "Mac close\n"); + + if (wl->open_ifcs > 0) + wl->open_ifcs--; + else + return 0; + + if (vif->ndev) { + netif_stop_queue(vif->ndev); + + wilc_deinit_host_int(vif->ndev); + } + + if (wl->open_ifcs == 0) { + netdev_dbg(ndev, "Deinitializing wilc1000\n"); + wl->close = 1; + wilc_wlan_deinitialize(ndev); + } + + vif->mac_opened = 0; + + return 0; +} + +void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, + u32 pkt_offset) +{ + unsigned int frame_len = 0; + int stats; + unsigned char *buff_to_send = NULL; + struct sk_buff *skb; + struct net_device *wilc_netdev; + struct wilc_vif *vif; + + if (!wilc) + return; + + wilc_netdev = get_if_handler(wilc, buff); + if (!wilc_netdev) + return; + + buff += pkt_offset; + vif = netdev_priv(wilc_netdev); + + if (size > 0) { + frame_len = size; + buff_to_send = buff; + + skb = dev_alloc_skb(frame_len); + if (!skb) + return; + + skb->dev = wilc_netdev; + + skb_put_data(skb, buff_to_send, frame_len); + + skb->protocol = eth_type_trans(skb, wilc_netdev); + vif->netstats.rx_packets++; + vif->netstats.rx_bytes += frame_len; + skb->ip_summed = CHECKSUM_UNNECESSARY; + stats = netif_rx(skb); + netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats); + } +} + +void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size) +{ + int i = 0; + struct wilc_vif *vif; + + for (i = 0; i < wilc->vif_num; i++) { + vif = netdev_priv(wilc->vif[i]->ndev); + if (vif->monitor_flag) { + wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size); + return; + } + } + + vif = netdev_priv(wilc->vif[1]->ndev); + if ((buff[0] == vif->frame_reg[0].type && vif->frame_reg[0].reg) || + (buff[0] == vif->frame_reg[1].type && vif->frame_reg[1].reg)) + wilc_wfi_p2p_rx(wilc->vif[1]->ndev, buff, size); +} + +static const struct net_device_ops wilc_netdev_ops = { + .ndo_init = mac_init_fn, + .ndo_open = wilc_mac_open, + .ndo_stop = wilc_mac_close, + .ndo_start_xmit = wilc_mac_xmit, + .ndo_get_stats = mac_stats, + .ndo_set_rx_mode = wilc_set_multicast_list, +}; + +static int dev_state_ev_handler(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct in_ifaddr *dev_iface = ptr; + struct wilc_priv *priv; + struct host_if_drv *hif_drv; + struct net_device *dev; + struct wilc_vif *vif; + + if (!dev_iface || !dev_iface->ifa_dev || !dev_iface->ifa_dev->dev) + return NOTIFY_DONE; + + dev = (struct net_device *)dev_iface->ifa_dev->dev; + if (dev->netdev_ops != &wilc_netdev_ops) + return NOTIFY_DONE; + + if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) + return NOTIFY_DONE; + + priv = wiphy_priv(dev->ieee80211_ptr->wiphy); + if (!priv) + return NOTIFY_DONE; + + hif_drv = (struct host_if_drv *)priv->hif_drv; + vif = netdev_priv(dev); + if (!vif || !hif_drv) + return NOTIFY_DONE; + + switch (event) { + case NETDEV_UP: + if (vif->iftype == WILC_STATION_MODE || + vif->iftype == WILC_CLIENT_MODE) { + hif_drv->ifc_up = 1; + vif->obtaining_ip = false; + del_timer(&vif->during_ip_timer); + } + + if (vif->wilc->enable_ps) + wilc_set_power_mgmt(vif, 1, 0); + + break; + + case NETDEV_DOWN: + if (vif->iftype == WILC_STATION_MODE || + vif->iftype == WILC_CLIENT_MODE) { + hif_drv->ifc_up = 0; + vif->obtaining_ip = false; + wilc_set_power_mgmt(vif, 0, 0); + } + + wilc_resolve_disconnect_aberration(vif); + + break; + + default: + break; + } + + return NOTIFY_DONE; +} + +static struct notifier_block g_dev_notifier = { + .notifier_call = dev_state_ev_handler +}; + +void wilc_netdev_cleanup(struct wilc *wilc) +{ + int i; + + if (!wilc) + return; + + if (wilc->vif[0]->ndev || wilc->vif[1]->ndev) + unregister_inetaddr_notifier(&g_dev_notifier); + + if (wilc->firmware) { + release_firmware(wilc->firmware); + wilc->firmware = NULL; + } + + for (i = 0; i < WILC_NUM_CONCURRENT_IFC; i++) { + if (wilc->vif[i] && wilc->vif[i]->ndev) { + unregister_netdev(wilc->vif[i]->ndev); + wilc_free_wiphy(wilc->vif[i]->ndev); + free_netdev(wilc->vif[i]->ndev); + } + } + + wilc_wfi_deinit_mon_interface(wilc); + flush_workqueue(wilc->hif_workqueue); + destroy_workqueue(wilc->hif_workqueue); + wilc_wlan_cfg_deinit(wilc); + kfree(wilc->bus_data); + kfree(wilc); +} +EXPORT_SYMBOL_GPL(wilc_netdev_cleanup); + +int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type, + const struct wilc_hif_func *ops) +{ + int i, ret; + struct wilc_vif *vif; + struct net_device *ndev; + struct wilc *wl; + + wl = kzalloc(sizeof(*wl), GFP_KERNEL); + if (!wl) + return -ENOMEM; + + ret = wilc_wlan_cfg_init(wl); + if (ret) + goto free_wl; + + *wilc = wl; + wl->io_type = io_type; + wl->hif_func = ops; + wl->enable_ps = true; + wl->chip_ps_state = WILC_CHIP_WAKEDUP; + INIT_LIST_HEAD(&wl->txq_head.list); + INIT_LIST_HEAD(&wl->rxq_head.list); + + wl->hif_workqueue = create_singlethread_workqueue("WILC_wq"); + if (!wl->hif_workqueue) { + ret = -ENOMEM; + goto free_cfg; + } + + register_inetaddr_notifier(&g_dev_notifier); + + for (i = 0; i < WILC_NUM_CONCURRENT_IFC; i++) { + struct wireless_dev *wdev; + + ndev = alloc_etherdev(sizeof(struct wilc_vif)); + if (!ndev) { + ret = -ENOMEM; + goto free_ndev; + } + + vif = netdev_priv(ndev); + memset(vif, 0, sizeof(struct wilc_vif)); + + if (i == 0) { + strcpy(ndev->name, "wlan%d"); + vif->ifc_id = 1; + } else { + strcpy(ndev->name, "p2p%d"); + vif->ifc_id = 0; + } + vif->wilc = *wilc; + vif->ndev = ndev; + wl->vif[i] = vif; + wl->vif_num = i + 1; + vif->idx = i; + + ndev->netdev_ops = &wilc_netdev_ops; + + wdev = wilc_create_wiphy(ndev, dev); + if (!wdev) { + netdev_err(ndev, "Can't register WILC Wiphy\n"); + ret = -ENOMEM; + goto free_ndev; + } + + SET_NETDEV_DEV(ndev, dev); + + vif->ndev->ieee80211_ptr = wdev; + vif->ndev->ml_priv = vif; + wdev->netdev = vif->ndev; + vif->netstats.rx_packets = 0; + vif->netstats.tx_packets = 0; + vif->netstats.rx_bytes = 0; + vif->netstats.tx_bytes = 0; + + ret = register_netdev(ndev); + if (ret) + goto free_ndev; + + vif->iftype = WILC_STATION_MODE; + vif->mac_opened = 0; + } + + return 0; + +free_ndev: + for (; i >= 0; i--) { + if (wl->vif[i]) { + if (wl->vif[i]->iftype == WILC_STATION_MODE) + unregister_netdev(wl->vif[i]->ndev); + + if (wl->vif[i]->ndev) { + wilc_free_wiphy(wl->vif[i]->ndev); + free_netdev(wl->vif[i]->ndev); + } + } + } + unregister_inetaddr_notifier(&g_dev_notifier); + destroy_workqueue(wl->hif_workqueue); +free_cfg: + wilc_wlan_cfg_deinit(wl); +free_wl: + kfree(wl); + return ret; +} +EXPORT_SYMBOL_GPL(wilc_netdev_init); + +MODULE_LICENSE("GPL"); |