ath9k: Add new Atheros IEEE 802.11n driver
This adds the new mac80211 11n ath9k Atheros driver. Only STA support
is currently enabled and tested.
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Jack Howarth <howarth@bromo.msbb.uc.edu>
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
new file mode 100644
index 0000000..9549524
--- /dev/null
+++ b/drivers/net/wireless/ath9k/main.c
@@ -0,0 +1,1533 @@
+/*
+ * Copyright (c) 2008 Atheros Communications 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.
+ */
+
+/* mac80211 and PCI callbacks */
+
+#include <linux/nl80211.h>
+#include "core.h"
+
+#define ATH_PCI_VERSION "0.1"
+
+#define IEEE80211_HTCAP_MAXRXAMPDU_FACTOR 13
+#define IEEE80211_ACTION_CAT_HT 7
+#define IEEE80211_ACTION_HT_TXCHWIDTH 0
+
+static char *dev_info = "ath9k";
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
+MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static struct pci_device_id ath_pci_id_table[] __devinitdata = {
+ { PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
+ { PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
+ { PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
+ { PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
+ { PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
+ { 0 }
+};
+
+static int ath_get_channel(struct ath_softc *sc,
+ struct ieee80211_channel *chan)
+{
+ int i;
+
+ for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
+ if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
+ return i;
+ }
+
+ return -1;
+}
+
+static u32 ath_get_extchanmode(struct ath_softc *sc,
+ struct ieee80211_channel *chan)
+{
+ u32 chanmode = 0;
+ u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
+ enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;
+
+ switch (chan->band) {
+ case IEEE80211_BAND_2GHZ:
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_20))
+ chanmode = CHANNEL_G_HT20;
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ chanmode = CHANNEL_G_HT40PLUS;
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ chanmode = CHANNEL_G_HT40MINUS;
+ break;
+ case IEEE80211_BAND_5GHZ:
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_20))
+ chanmode = CHANNEL_A_HT20;
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ chanmode = CHANNEL_A_HT40PLUS;
+ if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
+ (tx_chan_width == ATH9K_HT_MACMODE_2040))
+ chanmode = CHANNEL_A_HT40MINUS;
+ break;
+ default:
+ break;
+ }
+
+ return chanmode;
+}
+
+
+static int ath_setkey_tkip(struct ath_softc *sc,
+ struct ieee80211_key_conf *key,
+ struct ath9k_keyval *hk,
+ const u8 *addr)
+{
+ u8 *key_rxmic = NULL;
+ u8 *key_txmic = NULL;
+
+ key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
+ key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
+
+ if (addr == NULL) {
+ /* Group key installation */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ return ath_keyset(sc, key->keyidx, hk, addr);
+ }
+ if (!sc->sc_splitmic) {
+ /*
+ * data key goes at first index,
+ * the hal handles the MIC keys at index+64.
+ */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
+ return ath_keyset(sc, key->keyidx, hk, addr);
+ }
+ /*
+ * TX key goes at first index, RX key at +32.
+ * The hal handles the MIC keys at index+64.
+ */
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
+ /* Txmic entry failed. No need to proceed further */
+ DPRINTF(sc, ATH_DBG_KEYCACHE,
+ "%s Setting TX MIC Key Failed\n", __func__);
+ return 0;
+ }
+
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ /* XXX delete tx key on failure? */
+ return ath_keyset(sc, key->keyidx+32, hk, addr);
+}
+
+static int ath_key_config(struct ath_softc *sc,
+ const u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct ieee80211_vif *vif;
+ struct ath9k_keyval hk;
+ const u8 *mac = NULL;
+ int ret = 0;
+ enum ieee80211_if_types opmode;
+
+ memset(&hk, 0, sizeof(hk));
+
+ switch (key->alg) {
+ case ALG_WEP:
+ hk.kv_type = ATH9K_CIPHER_WEP;
+ break;
+ case ALG_TKIP:
+ hk.kv_type = ATH9K_CIPHER_TKIP;
+ break;
+ case ALG_CCMP:
+ hk.kv_type = ATH9K_CIPHER_AES_CCM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ hk.kv_len = key->keylen;
+ memcpy(hk.kv_val, key->key, key->keylen);
+
+ if (!sc->sc_vaps[0])
+ return -EIO;
+
+ vif = sc->sc_vaps[0]->av_if_data;
+ opmode = vif->type;
+
+ /*
+ * Strategy:
+ * For _M_STA mc tx, we will not setup a key at all since we never
+ * tx mc.
+ * _M_STA mc rx, we will use the keyID.
+ * for _M_IBSS mc tx, we will use the keyID, and no macaddr.
+ * for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
+ * peer node. BUT we will plumb a cleartext key so that we can do
+ * perSta default key table lookup in software.
+ */
+ if (is_broadcast_ether_addr(addr)) {
+ switch (opmode) {
+ case IEEE80211_IF_TYPE_STA:
+ /* default key: could be group WPA key
+ * or could be static WEP key */
+ mac = NULL;
+ break;
+ case IEEE80211_IF_TYPE_IBSS:
+ break;
+ case IEEE80211_IF_TYPE_AP:
+ break;
+ default:
+ ASSERT(0);
+ break;
+ }
+ } else {
+ mac = addr;
+ }
+
+ if (key->alg == ALG_TKIP)
+ ret = ath_setkey_tkip(sc, key, &hk, mac);
+ else
+ ret = ath_keyset(sc, key->keyidx, &hk, mac);
+
+ if (!ret)
+ return -EIO;
+
+ sc->sc_keytype = hk.kv_type;
+ return 0;
+}
+
+static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
+{
+#define ATH_MAX_NUM_KEYS 4
+ int freeslot;
+
+ freeslot = (key->keyidx >= ATH_MAX_NUM_KEYS) ? 1 : 0;
+ ath_key_reset(sc, key->keyidx, freeslot);
+#undef ATH_MAX_NUM_KEYS
+}
+
+static void setup_ht_cap(struct ieee80211_ht_info *ht_info)
+{
+/* Until mac80211 includes these fields */
+
+#define IEEE80211_HT_CAP_DSSSCCK40 0x1000
+#define IEEE80211_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
+#define IEEE80211_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
+
+ ht_info->ht_supported = 1;
+ ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
+ |(u16)IEEE80211_HT_CAP_MIMO_PS
+ |(u16)IEEE80211_HT_CAP_SGI_40
+ |(u16)IEEE80211_HT_CAP_DSSSCCK40;
+
+ ht_info->ampdu_factor = IEEE80211_HT_CAP_MAXRXAMPDU_65536;
+ ht_info->ampdu_density = IEEE80211_HT_CAP_MPDUDENSITY_8;
+ /* setup supported mcs set */
+ memset(ht_info->supp_mcs_set, 0, 16);
+ ht_info->supp_mcs_set[0] = 0xff;
+ ht_info->supp_mcs_set[1] = 0xff;
+ ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
+}
+
+static int ath_rate2idx(struct ath_softc *sc, int rate)
+{
+ int i = 0, cur_band, n_rates;
+ struct ieee80211_hw *hw = sc->hw;
+
+ cur_band = hw->conf.channel->band;
+ n_rates = sc->sbands[cur_band].n_bitrates;
+
+ for (i = 0; i < n_rates; i++) {
+ if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
+ break;
+ }
+
+ /*
+ * NB:mac80211 validates rx rate index against the supported legacy rate
+ * index only (should be done against ht rates also), return the highest
+ * legacy rate index for rx rate which does not match any one of the
+ * supported basic and extended rates to make mac80211 happy.
+ * The following hack will be cleaned up once the issue with
+ * the rx rate index validation in mac80211 is fixed.
+ */
+ if (i == n_rates)
+ return n_rates - 1;
+ return i;
+}
+
+static void ath9k_rx_prepare(struct ath_softc *sc,
+ struct sk_buff *skb,
+ struct ath_recv_status *status,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_channel *curchan = hw->conf.channel;
+
+ memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
+
+ rx_status->mactime = status->tsf;
+ rx_status->band = curchan->band;
+ rx_status->freq = curchan->center_freq;
+ rx_status->noise = ATH_DEFAULT_NOISE_FLOOR;
+ rx_status->signal = rx_status->noise + status->rssi;
+ rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
+ rx_status->antenna = status->antenna;
+ rx_status->qual = status->rssi * 100 / 64;
+
+ if (status->flags & ATH_RX_MIC_ERROR)
+ rx_status->flag |= RX_FLAG_MMIC_ERROR;
+ if (status->flags & ATH_RX_FCS_ERROR)
+ rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+
+ rx_status->flag |= RX_FLAG_TSFT;
+}
+
+static u8 parse_mpdudensity(u8 mpdudensity)
+{
+ /*
+ * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
+ * 0 for no restriction
+ * 1 for 1/4 us
+ * 2 for 1/2 us
+ * 3 for 1 us
+ * 4 for 2 us
+ * 5 for 4 us
+ * 6 for 8 us
+ * 7 for 16 us
+ */
+ switch (mpdudensity) {
+ case 0:
+ return 0;
+ case 1:
+ case 2:
+ case 3:
+ /* Our lower layer calculations limit our precision to
+ 1 microsecond */
+ return 1;
+ case 4:
+ return 2;
+ case 5:
+ return 4;
+ case 6:
+ return 8;
+ case 7:
+ return 16;
+ default:
+ return 0;
+ }
+}
+
+static int ath9k_start(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ int error = 0, pos;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
+ "initial channel: %d MHz\n", __func__, curchan->center_freq);
+
+ /* setup initial channel */
+
+ pos = ath_get_channel(sc, curchan);
+ if (pos == -1) {
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
+ return -EINVAL;
+ }
+
+ sc->sc_ah->ah_channels[pos].chanmode =
+ (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
+
+ /* open ath_dev */
+ error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
+ if (error) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to complete ath_open\n", __func__);
+ return error;
+ }
+
+ ieee80211_wake_queues(hw);
+ return 0;
+}
+
+static int ath9k_tx(struct ieee80211_hw *hw,
+ struct sk_buff *skb)
+{
+ struct ath_softc *sc = hw->priv;
+ int hdrlen, padsize;
+
+ /* Add the padding after the header if this is not already done */
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ if (hdrlen & 3) {
+ padsize = hdrlen % 4;
+ if (skb_headroom(skb) < padsize)
+ return -1;
+ skb_push(skb, padsize);
+ memmove(skb->data, skb->data + padsize, hdrlen);
+ }
+
+ DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
+ __func__,
+ skb);
+
+ if (ath_tx_start(sc, skb) != 0) {
+ DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
+ dev_kfree_skb_any(skb);
+ /* FIXME: Check for proper return value from ATH_DEV */
+ return 0;
+ }
+
+ return 0;
+}
+
+static void ath9k_stop(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+ int error;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
+
+ error = ath_suspend(sc);
+ if (error)
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: Device is no longer present\n", __func__);
+
+ ieee80211_stop_queues(hw);
+}
+
+static int ath9k_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct ath_softc *sc = hw->priv;
+ int error, ic_opmode = 0;
+
+ /* Support only vap for now */
+
+ if (sc->sc_nvaps)
+ return -ENOBUFS;
+
+ switch (conf->type) {
+ case IEEE80211_IF_TYPE_STA:
+ ic_opmode = ATH9K_M_STA;
+ break;
+ case IEEE80211_IF_TYPE_IBSS:
+ ic_opmode = ATH9K_M_IBSS;
+ break;
+ default:
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Only STA and IBSS are supported currently\n",
+ __func__);
+ return -EOPNOTSUPP;
+ }
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
+ __func__,
+ ic_opmode);
+
+ error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
+ if (error) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to attach vap, error: %d\n",
+ __func__, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static void ath9k_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_if_init_conf *conf)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_vap *avp;
+ int error;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
+
+ avp = sc->sc_vaps[0];
+ if (avp == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
+ __func__);
+ return;
+ }
+
+#ifdef CONFIG_SLOW_ANT_DIV
+ ath_slow_ant_div_stop(&sc->sc_antdiv);
+#endif
+
+ /* Update ratectrl */
+ ath_rate_newstate(sc, avp);
+
+ /* Reclaim beacon resources */
+ if (sc->sc_opmode == ATH9K_M_HOSTAP || sc->sc_opmode == ATH9K_M_IBSS) {
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
+ ath_beacon_return(sc, avp);
+ }
+
+ /* Set interrupt mask */
+ sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
+ ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
+ sc->sc_beacons = 0;
+
+ error = ath_vap_detach(sc, 0);
+ if (error)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to detach vap, error: %d\n",
+ __func__, error);
+}
+
+static int ath9k_config(struct ieee80211_hw *hw,
+ struct ieee80211_conf *conf)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ int pos;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
+ __func__,
+ curchan->center_freq);
+
+ pos = ath_get_channel(sc, curchan);
+ if (pos == -1) {
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
+ return -EINVAL;
+ }
+
+ sc->sc_ah->ah_channels[pos].chanmode =
+ (curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
+ sc->sc_config.txpowlimit = 2 * conf->power_level;
+
+ /* set h/w channel */
+ if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Unable to set channel\n",
+ __func__);
+
+ return 0;
+}
+
+static int ath9k_config_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_if_conf *conf)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_vap *avp;
+ u32 rfilt = 0;
+ int error, i;
+ DECLARE_MAC_BUF(mac);
+
+ avp = sc->sc_vaps[0];
+ if (avp == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if ((conf->changed & IEEE80211_IFCC_BSSID) &&
+ !is_zero_ether_addr(conf->bssid)) {
+ switch (vif->type) {
+ case IEEE80211_IF_TYPE_STA:
+ case IEEE80211_IF_TYPE_IBSS:
+ /* Update ratectrl about the new state */
+ ath_rate_newstate(sc, avp);
+
+ /* Set rx filter */
+ rfilt = ath_calcrxfilter(sc);
+ ath9k_hw_setrxfilter(sc->sc_ah, rfilt);
+
+ /* Set BSSID */
+ memcpy(sc->sc_curbssid, conf->bssid, ETH_ALEN);
+ sc->sc_curaid = 0;
+ ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
+ sc->sc_curaid);
+
+ /* Set aggregation protection mode parameters */
+ sc->sc_config.ath_aggr_prot = 0;
+
+ /*
+ * Reset our TSF so that its value is lower than the
+ * beacon that we are trying to catch.
+ * Only then hw will update its TSF register with the
+ * new beacon. Reset the TSF before setting the BSSID
+ * to avoid allowing in any frames that would update
+ * our TSF only to have us clear it
+ * immediately thereafter.
+ */
+ ath9k_hw_reset_tsf(sc->sc_ah);
+
+ /* Disable BMISS interrupt when we're not associated */
+ ath9k_hw_set_interrupts(sc->sc_ah,
+ sc->sc_imask &
+ ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS));
+ sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: RX filter 0x%x bssid %s aid 0x%x\n",
+ __func__, rfilt,
+ print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
+
+ /* need to reconfigure the beacon */
+ sc->sc_beacons = 0;
+
+ break;
+ default:
+ break;
+ }
+ }
+
+ if ((conf->changed & IEEE80211_IFCC_BEACON) &&
+ (vif->type == IEEE80211_IF_TYPE_IBSS)) {
+ /*
+ * Allocate and setup the beacon frame.
+ *
+ * Stop any previous beacon DMA. This may be
+ * necessary, for example, when an ibss merge
+ * causes reconfiguration; we may be called
+ * with beacon transmission active.
+ */
+ ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
+
+ error = ath_beacon_alloc(sc, 0);
+ if (error != 0)
+ return error;
+
+ ath_beacon_sync(sc, 0);
+ }
+
+ /* Check for WLAN_CAPABILITY_PRIVACY ? */
+ if ((avp->av_opmode != IEEE80211_IF_TYPE_STA)) {
+ for (i = 0; i < IEEE80211_WEP_NKID; i++)
+ if (ath9k_hw_keyisvalid(sc->sc_ah, (u16)i))
+ ath9k_hw_keysetmac(sc->sc_ah,
+ (u16)i,
+ sc->sc_curbssid);
+ }
+
+ /* Only legacy IBSS for now */
+ if (vif->type == IEEE80211_IF_TYPE_IBSS)
+ ath_update_chainmask(sc, 0);
+
+ return 0;
+}
+
+#define SUPPORTED_FILTERS \
+ (FIF_PROMISC_IN_BSS | \
+ FIF_ALLMULTI | \
+ FIF_CONTROL | \
+ FIF_OTHER_BSS | \
+ FIF_BCN_PRBRESP_PROMISC | \
+ FIF_FCSFAIL)
+
+/* Accept unicast, bcast and mcast frames */
+
+static void ath9k_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ int mc_count,
+ struct dev_mc_list *mclist)
+{
+ struct ath_softc *sc = hw->priv;
+
+ changed_flags &= SUPPORTED_FILTERS;
+ *total_flags &= SUPPORTED_FILTERS;
+
+ if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+ if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
+ ath_scan_start(sc);
+ else
+ ath_scan_end(sc);
+ }
+}
+
+static void ath9k_sta_notify(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd,
+ const u8 *addr)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_node *an;
+ unsigned long flags;
+ DECLARE_MAC_BUF(mac);
+
+ spin_lock_irqsave(&sc->node_lock, flags);
+ an = ath_node_find(sc, (u8 *) addr);
+ spin_unlock_irqrestore(&sc->node_lock, flags);
+
+ switch (cmd) {
+ case STA_NOTIFY_ADD:
+ spin_lock_irqsave(&sc->node_lock, flags);
+ if (!an) {
+ ath_node_attach(sc, (u8 *)addr, 0);
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a node: %s\n",
+ __func__,
+ print_mac(mac, addr));
+ } else {
+ ath_node_get(sc, (u8 *)addr);
+ }
+ spin_unlock_irqrestore(&sc->node_lock, flags);
+ break;
+ case STA_NOTIFY_REMOVE:
+ if (!an)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Removal of a non-existent node\n",
+ __func__);
+ else {
+ ath_node_put(sc, an, ATH9K_BH_STATUS_INTACT);
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Put a node: %s\n",
+ __func__,
+ print_mac(mac, addr));
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static int ath9k_conf_tx(struct ieee80211_hw *hw,
+ u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath9k_txq_info qi;
+ int ret = 0, qnum;
+
+ if (queue >= WME_NUM_AC)
+ return 0;
+
+ qi.tqi_aifs = params->aifs;
+ qi.tqi_cwmin = params->cw_min;
+ qi.tqi_cwmax = params->cw_max;
+ qi.tqi_burstTime = params->txop;
+ qnum = ath_get_hal_qnum(queue, sc);
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: Configure tx [queue/halq] [%d/%d], "
+ "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
+ __func__,
+ queue,
+ qnum,
+ params->aifs,
+ params->cw_min,
+ params->cw_max,
+ params->txop);
+
+ ret = ath_txq_update(sc, qnum, &qi);
+ if (ret)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: TXQ Update failed\n", __func__);
+
+ return ret;
+}
+
+static int ath9k_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ const u8 *local_addr,
+ const u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct ath_softc *sc = hw->priv;
+ int ret = 0;
+
+ DPRINTF(sc, ATH_DBG_KEYCACHE, " %s: Set HW Key\n", __func__);
+
+ switch (cmd) {
+ case SET_KEY:
+ ret = ath_key_config(sc, addr, key);
+ if (!ret) {
+ set_bit(key->keyidx, sc->sc_keymap);
+ key->hw_key_idx = key->keyidx;
+ /* push IV and Michael MIC generation to stack */
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+ }
+ break;
+ case DISABLE_KEY:
+ ath_key_delete(sc, key);
+ clear_bit(key->keyidx, sc->sc_keymap);
+ sc->sc_keytype = ATH9K_CIPHER_CLR;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static void ath9k_ht_conf(struct ath_softc *sc,
+ struct ieee80211_bss_conf *bss_conf)
+{
+#define IEEE80211_HT_CAP_40MHZ_INTOLERANT BIT(14)
+ struct ath_ht_info *ht_info = &sc->sc_ht_info;
+
+ if (bss_conf->assoc_ht) {
+ ht_info->ext_chan_offset =
+ bss_conf->ht_bss_conf->bss_cap &
+ IEEE80211_HT_IE_CHA_SEC_OFFSET;
+
+ if (!(bss_conf->ht_conf->cap &
+ IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
+ (bss_conf->ht_bss_conf->bss_cap &
+ IEEE80211_HT_IE_CHA_WIDTH))
+ ht_info->tx_chan_width = ATH9K_HT_MACMODE_2040;
+ else
+ ht_info->tx_chan_width = ATH9K_HT_MACMODE_20;
+
+ ath9k_hw_set11nmac2040(sc->sc_ah, ht_info->tx_chan_width);
+ ht_info->maxampdu = 1 << (IEEE80211_HTCAP_MAXRXAMPDU_FACTOR +
+ bss_conf->ht_conf->ampdu_factor);
+ ht_info->mpdudensity =
+ parse_mpdudensity(bss_conf->ht_conf->ampdu_density);
+
+ }
+
+#undef IEEE80211_HT_CAP_40MHZ_INTOLERANT
+}
+
+static void ath9k_bss_assoc_info(struct ath_softc *sc,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ struct ath_vap *avp;
+ int pos;
+ DECLARE_MAC_BUF(mac);
+
+ if (bss_conf->assoc) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Bss Info ASSOC %d\n",
+ __func__,
+ bss_conf->aid);
+
+ avp = sc->sc_vaps[0];
+ if (avp == NULL) {
+ DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
+ __func__);
+ return;
+ }
+
+ /* New association, store aid */
+ if (avp->av_opmode == ATH9K_M_STA) {
+ sc->sc_curaid = bss_conf->aid;
+ ath9k_hw_write_associd(sc->sc_ah, sc->sc_curbssid,
+ sc->sc_curaid);
+ }
+
+ /* Configure the beacon */
+ ath_beacon_config(sc, 0);
+ sc->sc_beacons = 1;
+
+ /* Reset rssi stats */
+ sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
+ sc->sc_halstats.ns_avgtxrate = ATH_RATE_DUMMY_MARKER;
+
+ /* Update chainmask */
+ ath_update_chainmask(sc, bss_conf->assoc_ht);
+
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: bssid %s aid 0x%x\n",
+ __func__,
+ print_mac(mac, sc->sc_curbssid), sc->sc_curaid);
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
+ __func__,
+ curchan->center_freq);
+
+ pos = ath_get_channel(sc, curchan);
+ if (pos == -1) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Invalid channel\n", __func__);
+ return;
+ }
+
+ if (hw->conf.ht_conf.ht_supported)
+ sc->sc_ah->ah_channels[pos].chanmode =
+ ath_get_extchanmode(sc, curchan);
+ else
+ sc->sc_ah->ah_channels[pos].chanmode =
+ (curchan->band == IEEE80211_BAND_2GHZ) ?
+ CHANNEL_G : CHANNEL_A;
+
+ /* set h/w channel */
+ if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to set channel\n",
+ __func__);
+
+ ath_rate_newstate(sc, avp);
+ /* Update ratectrl about the new state */
+ ath_rc_node_update(hw, avp->rc_node);
+ } else {
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: Bss Info DISSOC\n", __func__);
+ sc->sc_curaid = 0;
+ }
+}
+
+static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ struct ath_softc *sc = hw->priv;
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed PREAMBLE %d\n",
+ __func__,
+ bss_conf->use_short_preamble);
+ if (bss_conf->use_short_preamble)
+ sc->sc_flags |= ATH_PREAMBLE_SHORT;
+ else
+ sc->sc_flags &= ~ATH_PREAMBLE_SHORT;
+ }
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed CTS PROT %d\n",
+ __func__,
+ bss_conf->use_cts_prot);
+ if (bss_conf->use_cts_prot &&
+ hw->conf.channel->band != IEEE80211_BAND_5GHZ)
+ sc->sc_flags |= ATH_PROTECT_ENABLE;
+ else
+ sc->sc_flags &= ~ATH_PROTECT_ENABLE;
+ }
+
+ if (changed & BSS_CHANGED_HT) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed HT %d\n",
+ __func__,
+ bss_conf->assoc_ht);
+ ath9k_ht_conf(sc, bss_conf);
+ }
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: BSS Changed ASSOC %d\n",
+ __func__,
+ bss_conf->assoc);
+ ath9k_bss_assoc_info(sc, bss_conf);
+ }
+}
+
+static u64 ath9k_get_tsf(struct ieee80211_hw *hw)
+{
+ u64 tsf;
+ struct ath_softc *sc = hw->priv;
+ struct ath_hal *ah = sc->sc_ah;
+
+ tsf = ath9k_hw_gettsf64(ah);
+
+ return tsf;
+}
+
+static void ath9k_reset_tsf(struct ieee80211_hw *hw)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_hal *ah = sc->sc_ah;
+
+ ath9k_hw_reset_tsf(ah);
+}
+
+static int ath9k_ampdu_action(struct ieee80211_hw *hw,
+ enum ieee80211_ampdu_mlme_action action,
+ const u8 *addr,
+ u16 tid,
+ u16 *ssn)
+{
+ struct ath_softc *sc = hw->priv;
+ int ret = 0;
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ ret = ath_rx_aggr_start(sc, addr, tid, ssn);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to start RX aggregation\n",
+ __func__);
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ ret = ath_rx_aggr_stop(sc, addr, tid);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to stop RX aggregation\n",
+ __func__);
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ ret = ath_tx_aggr_start(sc, addr, tid, ssn);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to start TX aggregation\n",
+ __func__);
+ else
+ ieee80211_start_tx_ba_cb_irqsafe(hw, (u8 *)addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_STOP:
+ ret = ath_tx_aggr_stop(sc, addr, tid);
+ if (ret < 0)
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to stop TX aggregation\n",
+ __func__);
+
+ ieee80211_stop_tx_ba_cb_irqsafe(hw, (u8 *)addr, tid);
+ break;
+ default:
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unknown AMPDU action\n", __func__);
+ }
+
+ return ret;
+}
+
+static struct ieee80211_ops ath9k_ops = {
+ .tx = ath9k_tx,
+ .start = ath9k_start,
+ .stop = ath9k_stop,
+ .add_interface = ath9k_add_interface,
+ .remove_interface = ath9k_remove_interface,
+ .config = ath9k_config,
+ .config_interface = ath9k_config_interface,
+ .configure_filter = ath9k_configure_filter,
+ .get_stats = NULL,
+ .sta_notify = ath9k_sta_notify,
+ .conf_tx = ath9k_conf_tx,
+ .get_tx_stats = NULL,
+ .bss_info_changed = ath9k_bss_info_changed,
+ .set_tim = NULL,
+ .set_key = ath9k_set_key,
+ .hw_scan = NULL,
+ .get_tkip_seq = NULL,
+ .set_rts_threshold = NULL,
+ .set_frag_threshold = NULL,
+ .set_retry_limit = NULL,
+ .get_tsf = ath9k_get_tsf,
+ .reset_tsf = ath9k_reset_tsf,
+ .tx_last_beacon = NULL,
+ .ampdu_action = ath9k_ampdu_action
+};
+
+void ath_get_beaconconfig(struct ath_softc *sc,
+ int if_id,
+ struct ath_beacon_config *conf)
+{
+ struct ieee80211_hw *hw = sc->hw;
+
+ /* fill in beacon config data */
+
+ conf->beacon_interval = hw->conf.beacon_int;
+ conf->listen_interval = 100;
+ conf->dtim_count = 1;
+ conf->bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf->listen_interval;
+}
+
+int ath_update_beacon(struct ath_softc *sc,
+ int if_id,
+ struct ath_beacon_offset *bo,
+ struct sk_buff *skb,
+ int mcast)
+{
+ return 0;
+}
+
+void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
+ struct ath_xmit_status *tx_status, struct ath_node *an)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+
+ DPRINTF(sc, ATH_DBG_XMIT,
+ "%s: TX complete: skb: %p\n", __func__, skb);
+
+ if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK ||
+ tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
+ /* free driver's private data area of tx_info */
+ if (tx_info->driver_data[0] != NULL)
+ kfree(tx_info->driver_data[0]);
+ tx_info->driver_data[0] = NULL;
+ }
+
+ if (tx_status->flags & ATH_TX_BAR) {
+ tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
+ tx_status->flags &= ~ATH_TX_BAR;
+ }
+ if (tx_status->flags)
+ tx_info->status.excessive_retries = 1;
+
+ tx_info->status.retry_count = tx_status->retries;
+
+ ieee80211_tx_status(hw, skb);
+ if (an)
+ ath_node_put(sc, an, ATH9K_BH_STATUS_CHANGE);
+}
+
+int ath__rx_indicate(struct ath_softc *sc,
+ struct sk_buff *skb,
+ struct ath_recv_status *status,
+ u16 keyix)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ struct ath_node *an = NULL;
+ struct ieee80211_rx_status rx_status;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ int hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+ int padsize;
+ enum ATH_RX_TYPE st;
+
+ /* see if any padding is done by the hw and remove it */
+ if (hdrlen & 3) {
+ padsize = hdrlen % 4;
+ memmove(skb->data + padsize, skb->data, hdrlen);
+ skb_pull(skb, padsize);
+ }
+
+ /* remove FCS before passing up to protocol stack */
+ skb_trim(skb, (skb->len - FCS_LEN));
+
+ /* Prepare rx status */
+ ath9k_rx_prepare(sc, skb, status, &rx_status);
+
+ if (!(keyix == ATH9K_RXKEYIX_INVALID) &&
+ !(status->flags & ATH_RX_DECRYPT_ERROR)) {
+ rx_status.flag |= RX_FLAG_DECRYPTED;
+ } else if ((le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_PROTECTED)
+ && !(status->flags & ATH_RX_DECRYPT_ERROR)
+ && skb->len >= hdrlen + 4) {
+ keyix = skb->data[hdrlen + 3] >> 6;
+
+ if (test_bit(keyix, sc->sc_keymap))
+ rx_status.flag |= RX_FLAG_DECRYPTED;
+ }
+
+ spin_lock_bh(&sc->node_lock);
+ an = ath_node_find(sc, hdr->addr2);
+ spin_unlock_bh(&sc->node_lock);
+
+ if (an) {
+ ath_rx_input(sc, an,
+ hw->conf.ht_conf.ht_supported,
+ skb, status, &st);
+ }
+ if (!an || (st != ATH_RX_CONSUMED))
+ __ieee80211_rx(hw, skb, &rx_status);
+
+ return 0;
+}
+
+int ath_rx_subframe(struct ath_node *an,
+ struct sk_buff *skb,
+ struct ath_recv_status *status)
+{
+ struct ath_softc *sc = an->an_sc;
+ struct ieee80211_hw *hw = sc->hw;
+ struct ieee80211_rx_status rx_status;
+
+ /* Prepare rx status */
+ ath9k_rx_prepare(sc, skb, status, &rx_status);
+ if (!(status->flags & ATH_RX_DECRYPT_ERROR))
+ rx_status.flag |= RX_FLAG_DECRYPTED;
+
+ __ieee80211_rx(hw, skb, &rx_status);
+
+ return 0;
+}
+
+enum ath9k_ht_macmode ath_cwm_macmode(struct ath_softc *sc)
+{
+ return sc->sc_ht_info.tx_chan_width;
+}
+
+void ath_setup_rate(struct ath_softc *sc,
+ enum wireless_mode wMode,
+ enum RATE_TYPE type,
+ const struct ath9k_rate_table *rt)
+{
+ int i, maxrates, a = 0, b = 0;
+ struct ieee80211_supported_band *band_2ghz;
+ struct ieee80211_supported_band *band_5ghz;
+ struct ieee80211_rate *rates_2ghz;
+ struct ieee80211_rate *rates_5ghz;
+
+ if ((wMode >= WIRELESS_MODE_MAX) || (type != NORMAL_RATE))
+ return;
+
+ band_2ghz = &sc->sbands[IEEE80211_BAND_2GHZ];
+ band_5ghz = &sc->sbands[IEEE80211_BAND_5GHZ];
+ rates_2ghz = sc->rates[IEEE80211_BAND_2GHZ];
+ rates_5ghz = sc->rates[IEEE80211_BAND_5GHZ];
+
+ if (rt->rateCount > ATH_RATE_MAX)
+ maxrates = ATH_RATE_MAX;
+ else
+ maxrates = rt->rateCount;
+
+ if ((band_2ghz->n_bitrates != 0) && (band_5ghz->n_bitrates != 0)) {
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: Rates already setup\n", __func__);
+ return;
+ }
+
+ for (i = 0; i < maxrates; i++) {
+ switch (wMode) {
+ case WIRELESS_MODE_11b:
+ case WIRELESS_MODE_11g:
+ rates_2ghz[a].bitrate = rt->info[i].rateKbps / 100;
+ rates_2ghz[a].hw_value = rt->info[i].rateCode;
+ a++;
+ band_2ghz->n_bitrates = a;
+ break;
+ case WIRELESS_MODE_11a:
+ rates_5ghz[b].bitrate = rt->info[i].rateKbps / 100;
+ rates_5ghz[b].hw_value = rt->info[i].rateCode;
+ b++;
+ band_5ghz->n_bitrates = b;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (band_2ghz->n_bitrates) {
+ for (i = 0; i < band_2ghz->n_bitrates; i++) {
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: 2GHz Rate: %2dMbps, ratecode: %2d\n",
+ __func__,
+ rates_2ghz[i].bitrate / 10,
+ rates_2ghz[i].hw_value);
+ }
+ } else if (band_5ghz->n_bitrates) {
+ for (i = 0; i < band_5ghz->n_bitrates; i++) {
+ DPRINTF(sc, ATH_DBG_CONFIG,
+ "%s: 5Ghz Rate: %2dMbps, ratecode: %2d\n",
+ __func__,
+ rates_5ghz[i].bitrate / 10,
+ rates_5ghz[i].hw_value);
+ }
+ }
+}
+
+static int ath_detach(struct ath_softc *sc)
+{
+ struct ieee80211_hw *hw = sc->hw;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach ATH hw\n", __func__);
+
+ /* Unregister hw */
+
+ ieee80211_unregister_hw(hw);
+
+ /* unregister Rate control */
+ ath_rate_control_unregister();
+
+ /* tx/rx cleanup */
+
+ ath_rx_cleanup(sc);
+ ath_tx_cleanup(sc);
+
+ /* Deinit */
+
+ ath_deinit(sc);
+
+ return 0;
+}
+
+static int ath_attach(u16 devid,
+ struct ath_softc *sc)
+{
+ struct ieee80211_hw *hw = sc->hw;
+ int error = 0;
+
+ DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach ATH hw\n", __func__);
+
+ error = ath_init(devid, sc);
+ if (error != 0)
+ return error;
+
+ /* Init nodes */
+
+ INIT_LIST_HEAD(&sc->node_list);
+ spin_lock_init(&sc->node_lock);
+
+ /* get mac address from hardware and set in mac80211 */
+
+ SET_IEEE80211_PERM_ADDR(hw, sc->sc_myaddr);
+
+ /* setup channels and rates */
+
+ sc->sbands[IEEE80211_BAND_2GHZ].channels =
+ sc->channels[IEEE80211_BAND_2GHZ];
+ sc->sbands[IEEE80211_BAND_2GHZ].bitrates =
+ sc->rates[IEEE80211_BAND_2GHZ];
+ sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
+
+ if (sc->sc_ah->ah_caps.halHTSupport)
+ /* Setup HT capabilities for 2.4Ghz*/
+ setup_ht_cap(&sc->sbands[IEEE80211_BAND_2GHZ].ht_info);
+
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+ &sc->sbands[IEEE80211_BAND_2GHZ];
+
+ if (sc->sc_ah->ah_caps.halWirelessModes & ATH9K_MODE_SEL_11A) {
+ sc->sbands[IEEE80211_BAND_5GHZ].channels =
+ sc->channels[IEEE80211_BAND_5GHZ];
+ sc->sbands[IEEE80211_BAND_5GHZ].bitrates =
+ sc->rates[IEEE80211_BAND_5GHZ];
+ sc->sbands[IEEE80211_BAND_5GHZ].band =
+ IEEE80211_BAND_5GHZ;
+
+ if (sc->sc_ah->ah_caps.halHTSupport)
+ /* Setup HT capabilities for 5Ghz*/
+ setup_ht_cap(&sc->sbands[IEEE80211_BAND_5GHZ].ht_info);
+
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &sc->sbands[IEEE80211_BAND_5GHZ];
+ }
+
+ /* FIXME: Have to figure out proper hw init values later */
+
+ hw->queues = 4;
+ hw->ampdu_queues = 1;
+
+ /* Register rate control */
+ hw->rate_control_algorithm = "ath9k_rate_control";
+ error = ath_rate_control_register();
+ if (error != 0) {
+ DPRINTF(sc, ATH_DBG_FATAL,
+ "%s: Unable to register rate control "
+ "algorithm:%d\n", __func__, error);
+ ath_rate_control_unregister();
+ goto bad;
+ }
+
+ error = ieee80211_register_hw(hw);
+ if (error != 0) {
+ ath_rate_control_unregister();
+ goto bad;
+ }
+
+ /* initialize tx/rx engine */
+
+ error = ath_tx_init(sc, ATH_TXBUF);
+ if (error != 0)
+ goto bad1;
+
+ error = ath_rx_init(sc, ATH_RXBUF);
+ if (error != 0)
+ goto bad1;
+
+ return 0;
+bad1:
+ ath_detach(sc);
+bad:
+ return error;
+}
+
+static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ void __iomem *mem;
+ struct ath_softc *sc;
+ struct ieee80211_hw *hw;
+ const char *athname;
+ u8 csz;
+ u32 val;
+ int ret = 0;
+
+ if (pci_enable_device(pdev))
+ return -EIO;
+
+ /* XXX 32-bit addressing only */
+ if (pci_set_dma_mask(pdev, 0xffffffff)) {
+ printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
+ ret = -ENODEV;
+ goto bad;
+ }
+
+ /*
+ * Cache line size is used to size and align various
+ * structures used to communicate with the hardware.
+ */
+ pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
+ if (csz == 0) {
+ /*
+ * Linux 2.4.18 (at least) writes the cache line size
+ * register as a 16-bit wide register which is wrong.
+ * We must have this setup properly for rx buffer
+ * DMA to work so force a reasonable value here if it
+ * comes up zero.
+ */
+ csz = L1_CACHE_BYTES / sizeof(u32);
+ pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
+ }
+ /*
+ * The default setting of latency timer yields poor results,
+ * set it to the value used by other systems. It may be worth
+ * tweaking this setting more.
+ */
+ pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
+
+ pci_set_master(pdev);
+
+ /*
+ * Disable the RETRY_TIMEOUT register (0x41) to keep
+ * PCI Tx retries from interfering with C3 CPU state.
+ */
+ pci_read_config_dword(pdev, 0x40, &val);
+ if ((val & 0x0000ff00) != 0)
+ pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+
+ ret = pci_request_region(pdev, 0, "ath9k");
+ if (ret) {
+ dev_err(&pdev->dev, "PCI memory region reserve error\n");
+ ret = -ENODEV;
+ goto bad;
+ }
+
+ mem = pci_iomap(pdev, 0, 0);
+ if (!mem) {
+ printk(KERN_ERR "PCI memory map error\n") ;
+ ret = -EIO;
+ goto bad1;
+ }
+
+ hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);
+ if (hw == NULL) {
+ printk(KERN_ERR "ath_pci: no memory for ieee80211_hw\n");
+ goto bad2;
+ }
+
+ hw->flags = IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_NOISE_DBM;
+
+ SET_IEEE80211_DEV(hw, &pdev->dev);
+ pci_set_drvdata(pdev, hw);
+
+ sc = hw->priv;
+ sc->hw = hw;
+ sc->pdev = pdev;
+ sc->mem = mem;
+
+ if (ath_attach(id->device, sc) != 0) {
+ ret = -ENODEV;
+ goto bad3;
+ }
+
+ /* setup interrupt service routine */
+
+ if (request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath", sc)) {
+ printk(KERN_ERR "%s: request_irq failed\n",
+ wiphy_name(hw->wiphy));
+ ret = -EIO;
+ goto bad4;
+ }
+
+ athname = ath9k_hw_probe(id->vendor, id->device);
+
+ printk(KERN_INFO "%s: %s: mem=0x%lx, irq=%d\n",
+ wiphy_name(hw->wiphy),
+ athname ? athname : "Atheros ???",
+ (unsigned long)mem, pdev->irq);
+
+ return 0;
+bad4:
+ ath_detach(sc);
+bad3:
+ ieee80211_free_hw(hw);
+bad2:
+ pci_iounmap(pdev, mem);
+bad1:
+ pci_release_region(pdev, 0);
+bad:
+ pci_disable_device(pdev);
+ return ret;
+}
+
+static void ath_pci_remove(struct pci_dev *pdev)
+{
+ struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+ struct ath_softc *sc = hw->priv;
+
+ if (pdev->irq)
+ free_irq(pdev->irq, sc);
+ ath_detach(sc);
+ pci_iounmap(pdev, sc->mem);
+ pci_release_region(pdev, 0);
+ pci_disable_device(pdev);
+ ieee80211_free_hw(hw);
+}
+
+#ifdef CONFIG_PM
+
+static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, 3);
+
+ return 0;
+}
+
+static int ath_pci_resume(struct pci_dev *pdev)
+{
+ u32 val;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err)
+ return err;
+ pci_restore_state(pdev);
+ /*
+ * Suspend/Resume resets the PCI configuration space, so we have to
+ * re-disable the RETRY_TIMEOUT register (0x41) to keep
+ * PCI Tx retries from interfering with C3 CPU state
+ */
+ pci_read_config_dword(pdev, 0x40, &val);
+ if ((val & 0x0000ff00) != 0)
+ pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
+
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
+MODULE_DEVICE_TABLE(pci, ath_pci_id_table);
+
+static struct pci_driver ath_pci_driver = {
+ .name = "ath9k",
+ .id_table = ath_pci_id_table,
+ .probe = ath_pci_probe,
+ .remove = ath_pci_remove,
+#ifdef CONFIG_PM
+ .suspend = ath_pci_suspend,
+ .resume = ath_pci_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init init_ath_pci(void)
+{
+ printk(KERN_INFO "%s: %s\n", dev_info, ATH_PCI_VERSION);
+
+ if (pci_register_driver(&ath_pci_driver) < 0) {
+ printk(KERN_ERR
+ "ath_pci: No devices found, driver not installed.\n");
+ pci_unregister_driver(&ath_pci_driver);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+module_init(init_ath_pci);
+
+static void __exit exit_ath_pci(void)
+{
+ pci_unregister_driver(&ath_pci_driver);
+ printk(KERN_INFO "%s: driver unloaded\n", dev_info);
+}
+module_exit(exit_ath_pci);