Linux 3.11-rc3
[cris-mirror.git] / drivers / net / wireless / ath / wil6210 / netdev.c
blob29dd1e58cb170b20c36ff215ae64412a74e88266
1 /*
2 * Copyright (c) 2012 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>
19 #include "wil6210.h"
21 static int wil_open(struct net_device *ndev)
23 struct wil6210_priv *wil = ndev_to_wil(ndev);
25 return wil_up(wil);
28 static int wil_stop(struct net_device *ndev)
30 struct wil6210_priv *wil = ndev_to_wil(ndev);
32 return wil_down(wil);
35 static const struct net_device_ops wil_netdev_ops = {
36 .ndo_open = wil_open,
37 .ndo_stop = wil_stop,
38 .ndo_start_xmit = wil_start_xmit,
39 .ndo_set_mac_address = eth_mac_addr,
40 .ndo_validate_addr = eth_validate_addr,
43 static int wil6210_netdev_poll_rx(struct napi_struct *napi, int budget)
45 struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
46 napi_rx);
47 int quota = budget;
48 int done;
50 wil_rx_handle(wil, &quota);
51 done = budget - quota;
53 if (done <= 1) { /* burst ends - only one packet processed */
54 napi_complete(napi);
55 wil6210_unmask_irq_rx(wil);
56 wil_dbg_txrx(wil, "NAPI RX complete\n");
59 wil_dbg_txrx(wil, "NAPI RX poll(%d) done %d\n", budget, done);
61 return done;
64 static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget)
66 struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
67 napi_tx);
68 int tx_done = 0;
69 uint i;
71 /* always process ALL Tx complete, regardless budget - it is fast */
72 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
73 struct vring *vring = &wil->vring_tx[i];
75 if (!vring->va)
76 continue;
78 tx_done += wil_tx_complete(wil, i);
81 if (tx_done <= 1) { /* burst ends - only one packet processed */
82 napi_complete(napi);
83 wil6210_unmask_irq_tx(wil);
84 wil_dbg_txrx(wil, "NAPI TX complete\n");
87 wil_dbg_txrx(wil, "NAPI TX poll(%d) done %d\n", budget, tx_done);
89 return min(tx_done, budget);
92 void *wil_if_alloc(struct device *dev, void __iomem *csr)
94 struct net_device *ndev;
95 struct wireless_dev *wdev;
96 struct wil6210_priv *wil;
97 struct ieee80211_channel *ch;
98 int rc = 0;
100 wdev = wil_cfg80211_init(dev);
101 if (IS_ERR(wdev)) {
102 dev_err(dev, "wil_cfg80211_init failed\n");
103 return wdev;
106 wil = wdev_to_wil(wdev);
107 wil->csr = csr;
108 wil->wdev = wdev;
110 rc = wil_priv_init(wil);
111 if (rc) {
112 dev_err(dev, "wil_priv_init failed\n");
113 goto out_wdev;
116 wdev->iftype = NL80211_IFTYPE_STATION; /* TODO */
117 /* default monitor channel */
118 ch = wdev->wiphy->bands[IEEE80211_BAND_60GHZ]->channels;
119 cfg80211_chandef_create(&wdev->preset_chandef, ch, NL80211_CHAN_NO_HT);
121 ndev = alloc_netdev(0, "wlan%d", ether_setup);
122 if (!ndev) {
123 dev_err(dev, "alloc_netdev_mqs failed\n");
124 rc = -ENOMEM;
125 goto out_priv;
128 ndev->netdev_ops = &wil_netdev_ops;
129 ndev->ieee80211_ptr = wdev;
130 SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
131 wdev->netdev = ndev;
133 netif_napi_add(ndev, &wil->napi_rx, wil6210_netdev_poll_rx,
134 WIL6210_NAPI_BUDGET);
135 netif_napi_add(ndev, &wil->napi_tx, wil6210_netdev_poll_tx,
136 WIL6210_NAPI_BUDGET);
138 wil_link_off(wil);
140 return wil;
142 out_priv:
143 wil_priv_deinit(wil);
145 out_wdev:
146 wil_wdev_free(wil);
148 return ERR_PTR(rc);
151 void wil_if_free(struct wil6210_priv *wil)
153 struct net_device *ndev = wil_to_ndev(wil);
154 if (!ndev)
155 return;
157 free_netdev(ndev);
158 wil_priv_deinit(wil);
159 wil_wdev_free(wil);
162 int wil_if_add(struct wil6210_priv *wil)
164 struct net_device *ndev = wil_to_ndev(wil);
165 int rc;
167 rc = register_netdev(ndev);
168 if (rc < 0) {
169 dev_err(&ndev->dev, "Failed to register netdev: %d\n", rc);
170 return rc;
173 wil_link_off(wil);
175 return 0;
178 void wil_if_remove(struct wil6210_priv *wil)
180 struct net_device *ndev = wil_to_ndev(wil);
182 unregister_netdev(ndev);