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- /*
- * Copyright (c) 2012-2015 Qualcomm Atheros, Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- #include <linux/etherdevice.h>
- #include "wil6210.h"
- #include "txrx.h"
- static int wil_open(struct net_device *ndev)
- {
- struct wil6210_priv *wil = ndev_to_wil(ndev);
- wil_dbg_misc(wil, "%s()\n", __func__);
- if (debug_fw) {
- wil_err(wil, "%s() while in debug_fw mode\n", __func__);
- return -EINVAL;
- }
- return wil_up(wil);
- }
- static int wil_stop(struct net_device *ndev)
- {
- struct wil6210_priv *wil = ndev_to_wil(ndev);
- wil_dbg_misc(wil, "%s()\n", __func__);
- return wil_down(wil);
- }
- static int wil_change_mtu(struct net_device *ndev, int new_mtu)
- {
- struct wil6210_priv *wil = ndev_to_wil(ndev);
- if (new_mtu < 68 || new_mtu > mtu_max) {
- wil_err(wil, "invalid MTU %d\n", new_mtu);
- return -EINVAL;
- }
- wil_dbg_misc(wil, "change MTU %d -> %d\n", ndev->mtu, new_mtu);
- ndev->mtu = new_mtu;
- return 0;
- }
- static int wil_do_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
- {
- struct wil6210_priv *wil = ndev_to_wil(ndev);
- int ret = wil_ioctl(wil, ifr->ifr_data, cmd);
- wil_dbg_misc(wil, "ioctl(0x%04x) -> %d\n", cmd, ret);
- return ret;
- }
- static const struct net_device_ops wil_netdev_ops = {
- .ndo_open = wil_open,
- .ndo_stop = wil_stop,
- .ndo_start_xmit = wil_start_xmit,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = wil_change_mtu,
- .ndo_do_ioctl = wil_do_ioctl,
- };
- static int wil6210_netdev_poll_rx(struct napi_struct *napi, int budget)
- {
- struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
- napi_rx);
- int quota = budget;
- int done;
- wil_rx_handle(wil, "a);
- done = budget - quota;
- if (done < budget) {
- napi_complete(napi);
- wil6210_unmask_irq_rx(wil);
- wil_dbg_txrx(wil, "NAPI RX complete\n");
- }
- wil_dbg_txrx(wil, "NAPI RX poll(%d) done %d\n", budget, done);
- return done;
- }
- static int wil6210_netdev_poll_tx(struct napi_struct *napi, int budget)
- {
- struct wil6210_priv *wil = container_of(napi, struct wil6210_priv,
- napi_tx);
- int tx_done = 0;
- uint i;
- /* always process ALL Tx complete, regardless budget - it is fast */
- for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
- struct vring *vring = &wil->vring_tx[i];
- if (!vring->va)
- continue;
- tx_done += wil_tx_complete(wil, i);
- }
- if (tx_done < budget) {
- napi_complete(napi);
- wil6210_unmask_irq_tx(wil);
- wil_dbg_txrx(wil, "NAPI TX complete\n");
- }
- wil_dbg_txrx(wil, "NAPI TX poll(%d) done %d\n", budget, tx_done);
- return min(tx_done, budget);
- }
- static void wil_dev_setup(struct net_device *dev)
- {
- ether_setup(dev);
- dev->tx_queue_len = WIL_TX_Q_LEN_DEFAULT;
- }
- void *wil_if_alloc(struct device *dev)
- {
- struct net_device *ndev;
- struct wireless_dev *wdev;
- struct wil6210_priv *wil;
- struct ieee80211_channel *ch;
- int rc = 0;
- wdev = wil_cfg80211_init(dev);
- if (IS_ERR(wdev)) {
- dev_err(dev, "wil_cfg80211_init failed\n");
- return wdev;
- }
- wil = wdev_to_wil(wdev);
- wil->wdev = wdev;
- wil_dbg_misc(wil, "%s()\n", __func__);
- rc = wil_priv_init(wil);
- if (rc) {
- dev_err(dev, "wil_priv_init failed\n");
- goto out_wdev;
- }
- wdev->iftype = NL80211_IFTYPE_STATION; /* TODO */
- /* default monitor channel */
- ch = wdev->wiphy->bands[IEEE80211_BAND_60GHZ]->channels;
- cfg80211_chandef_create(&wdev->preset_chandef, ch, NL80211_CHAN_NO_HT);
- ndev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, wil_dev_setup);
- if (!ndev) {
- dev_err(dev, "alloc_netdev_mqs failed\n");
- rc = -ENOMEM;
- goto out_priv;
- }
- ndev->netdev_ops = &wil_netdev_ops;
- wil_set_ethtoolops(ndev);
- ndev->ieee80211_ptr = wdev;
- ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
- NETIF_F_SG | NETIF_F_GRO |
- NETIF_F_TSO | NETIF_F_TSO6 |
- NETIF_F_RXHASH;
- ndev->features |= ndev->hw_features;
- SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
- wdev->netdev = ndev;
- netif_napi_add(ndev, &wil->napi_rx, wil6210_netdev_poll_rx,
- WIL6210_NAPI_BUDGET);
- netif_napi_add(ndev, &wil->napi_tx, wil6210_netdev_poll_tx,
- WIL6210_NAPI_BUDGET);
- netif_tx_stop_all_queues(ndev);
- return wil;
- out_priv:
- wil_priv_deinit(wil);
- out_wdev:
- wil_wdev_free(wil);
- return ERR_PTR(rc);
- }
- void wil_if_free(struct wil6210_priv *wil)
- {
- struct net_device *ndev = wil_to_ndev(wil);
- wil_dbg_misc(wil, "%s()\n", __func__);
- if (!ndev)
- return;
- wil_priv_deinit(wil);
- wil_to_ndev(wil) = NULL;
- free_netdev(ndev);
- wil_wdev_free(wil);
- }
- int wil_if_add(struct wil6210_priv *wil)
- {
- struct net_device *ndev = wil_to_ndev(wil);
- int rc;
- wil_dbg_misc(wil, "%s()\n", __func__);
- rc = register_netdev(ndev);
- if (rc < 0) {
- dev_err(&ndev->dev, "Failed to register netdev: %d\n", rc);
- return rc;
- }
- return 0;
- }
- void wil_if_remove(struct wil6210_priv *wil)
- {
- struct net_device *ndev = wil_to_ndev(wil);
- wil_dbg_misc(wil, "%s()\n", __func__);
- unregister_netdev(ndev);
- }
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