2 * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/etherdevice.h>
22 static int wil_open(struct net_device *ndev)
24 struct wil6210_priv *wil = ndev_to_wil(ndev);
26 wil_dbg_misc(wil, "%s()\n", __func__);
31 static int wil_stop(struct net_device *ndev)
33 struct wil6210_priv *wil = ndev_to_wil(ndev);
35 wil_dbg_misc(wil, "%s()\n", __func__);
40 static int wil_change_mtu(struct net_device *ndev, int new_mtu)
42 struct wil6210_priv *wil = ndev_to_wil(ndev);
44 if (new_mtu < 68 || new_mtu > (TX_BUF_LEN - ETH_HLEN)) {
45 wil_err(wil, "invalid MTU %d\n", new_mtu);
49 wil_dbg_misc(wil, "change MTU %d -> %d\n", ndev->mtu, new_mtu);
55 static const struct net_device_ops wil_netdev_ops = {
58 .ndo_start_xmit = wil_start_xmit,
59 .ndo_set_mac_address = eth_mac_addr,
60 .ndo_validate_addr = eth_validate_addr,
61 .ndo_change_mtu = wil_change_mtu,
64 static int wil6210_netdev_poll_rx(struct napi_struct *napi, int budget)
66 struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
71 wil_rx_handle(wil, "a);
72 done = budget - quota;
74 if (done <= 1) { /* burst ends - only one packet processed */
76 wil6210_unmask_irq_rx(wil);
77 wil_dbg_txrx(wil, "NAPI RX complete\n");
80 wil_dbg_txrx(wil, "NAPI RX poll(%d) done %d\n", budget, done);
85 static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget)
87 struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
92 /* always process ALL Tx complete, regardless budget - it is fast */
93 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
94 struct vring *vring = &wil->vring_tx[i];
99 tx_done += wil_tx_complete(wil, i);
102 if (tx_done <= 1) { /* burst ends - only one packet processed */
104 wil6210_unmask_irq_tx(wil);
105 wil_dbg_txrx(wil, "NAPI TX complete\n");
108 wil_dbg_txrx(wil, "NAPI TX poll(%d) done %d\n", budget, tx_done);
110 return min(tx_done, budget);
113 void *wil_if_alloc(struct device *dev, void __iomem *csr)
115 struct net_device *ndev;
116 struct wireless_dev *wdev;
117 struct wil6210_priv *wil;
118 struct ieee80211_channel *ch;
121 wdev = wil_cfg80211_init(dev);
123 dev_err(dev, "wil_cfg80211_init failed\n");
127 wil = wdev_to_wil(wdev);
131 wil_dbg_misc(wil, "%s()\n", __func__);
133 rc = wil_priv_init(wil);
135 dev_err(dev, "wil_priv_init failed\n");
139 wdev->iftype = NL80211_IFTYPE_STATION; /* TODO */
140 /* default monitor channel */
141 ch = wdev->wiphy->bands[IEEE80211_BAND_60GHZ]->channels;
142 cfg80211_chandef_create(&wdev->preset_chandef, ch, NL80211_CHAN_NO_HT);
144 ndev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, ether_setup);
146 dev_err(dev, "alloc_netdev_mqs failed\n");
151 ndev->netdev_ops = &wil_netdev_ops;
152 ndev->ieee80211_ptr = wdev;
153 ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
154 NETIF_F_SG | NETIF_F_GRO;
155 ndev->features |= ndev->hw_features;
156 SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
159 netif_napi_add(ndev, &wil->napi_rx, wil6210_netdev_poll_rx,
160 WIL6210_NAPI_BUDGET);
161 netif_napi_add(ndev, &wil->napi_tx, wil6210_netdev_poll_tx,
162 WIL6210_NAPI_BUDGET);
169 wil_priv_deinit(wil);
177 void wil_if_free(struct wil6210_priv *wil)
179 struct net_device *ndev = wil_to_ndev(wil);
181 wil_dbg_misc(wil, "%s()\n", __func__);
186 wil_priv_deinit(wil);
188 wil_to_ndev(wil) = NULL;
194 int wil_if_add(struct wil6210_priv *wil)
196 struct net_device *ndev = wil_to_ndev(wil);
199 wil_dbg_misc(wil, "%s()\n", __func__);
201 rc = register_netdev(ndev);
203 dev_err(&ndev->dev, "Failed to register netdev: %d\n", rc);
212 void wil_if_remove(struct wil6210_priv *wil)
214 struct net_device *ndev = wil_to_ndev(wil);
216 wil_dbg_misc(wil, "%s()\n", __func__);
218 unregister_netdev(ndev);