86b89eed9a
Use a single enum for managing modes, store supported modes by the HW in a bitmask. Register legacy rates with mac80211 only at init. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1471 lines
36 KiB
C
1471 lines
36 KiB
C
/*
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* Copyright (c) 2008 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* mac80211 and PCI callbacks */
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#include <linux/nl80211.h>
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#include "core.h"
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#define ATH_PCI_VERSION "0.1"
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#define IEEE80211_HTCAP_MAXRXAMPDU_FACTOR 13
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#define IEEE80211_ACTION_CAT_HT 7
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#define IEEE80211_ACTION_HT_TXCHWIDTH 0
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static char *dev_info = "ath9k";
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MODULE_AUTHOR("Atheros Communications");
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MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards.");
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MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards");
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MODULE_LICENSE("Dual BSD/GPL");
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static struct pci_device_id ath_pci_id_table[] __devinitdata = {
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{ PCI_VDEVICE(ATHEROS, 0x0023) }, /* PCI */
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{ PCI_VDEVICE(ATHEROS, 0x0024) }, /* PCI-E */
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{ PCI_VDEVICE(ATHEROS, 0x0027) }, /* PCI */
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{ PCI_VDEVICE(ATHEROS, 0x0029) }, /* PCI */
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{ PCI_VDEVICE(ATHEROS, 0x002A) }, /* PCI-E */
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{ 0 }
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};
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static int ath_get_channel(struct ath_softc *sc,
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struct ieee80211_channel *chan)
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{
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int i;
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for (i = 0; i < sc->sc_ah->ah_nchan; i++) {
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if (sc->sc_ah->ah_channels[i].channel == chan->center_freq)
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return i;
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}
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return -1;
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}
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static u32 ath_get_extchanmode(struct ath_softc *sc,
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struct ieee80211_channel *chan)
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{
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u32 chanmode = 0;
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u8 ext_chan_offset = sc->sc_ht_info.ext_chan_offset;
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enum ath9k_ht_macmode tx_chan_width = sc->sc_ht_info.tx_chan_width;
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switch (chan->band) {
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case IEEE80211_BAND_2GHZ:
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
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(tx_chan_width == ATH9K_HT_MACMODE_20))
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chanmode = CHANNEL_G_HT20;
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
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(tx_chan_width == ATH9K_HT_MACMODE_2040))
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chanmode = CHANNEL_G_HT40PLUS;
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
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(tx_chan_width == ATH9K_HT_MACMODE_2040))
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chanmode = CHANNEL_G_HT40MINUS;
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break;
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case IEEE80211_BAND_5GHZ:
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE) &&
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(tx_chan_width == ATH9K_HT_MACMODE_20))
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chanmode = CHANNEL_A_HT20;
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE) &&
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(tx_chan_width == ATH9K_HT_MACMODE_2040))
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chanmode = CHANNEL_A_HT40PLUS;
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if ((ext_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW) &&
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(tx_chan_width == ATH9K_HT_MACMODE_2040))
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chanmode = CHANNEL_A_HT40MINUS;
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break;
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default:
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break;
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}
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return chanmode;
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}
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static int ath_setkey_tkip(struct ath_softc *sc,
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struct ieee80211_key_conf *key,
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struct ath9k_keyval *hk,
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const u8 *addr)
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{
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u8 *key_rxmic = NULL;
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u8 *key_txmic = NULL;
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key_txmic = key->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
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key_rxmic = key->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
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if (addr == NULL) {
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/* Group key installation */
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memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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return ath_keyset(sc, key->keyidx, hk, addr);
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}
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if (!sc->sc_splitmic) {
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/*
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* data key goes at first index,
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* the hal handles the MIC keys at index+64.
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*/
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memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
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return ath_keyset(sc, key->keyidx, hk, addr);
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}
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/*
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* TX key goes at first index, RX key at +32.
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* The hal handles the MIC keys at index+64.
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*/
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memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
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if (!ath_keyset(sc, key->keyidx, hk, NULL)) {
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/* Txmic entry failed. No need to proceed further */
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DPRINTF(sc, ATH_DBG_KEYCACHE,
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"%s Setting TX MIC Key Failed\n", __func__);
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return 0;
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}
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memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
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/* XXX delete tx key on failure? */
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return ath_keyset(sc, key->keyidx+32, hk, addr);
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}
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static int ath_key_config(struct ath_softc *sc,
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const u8 *addr,
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struct ieee80211_key_conf *key)
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{
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struct ieee80211_vif *vif;
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struct ath9k_keyval hk;
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const u8 *mac = NULL;
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int ret = 0;
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enum ieee80211_if_types opmode;
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memset(&hk, 0, sizeof(hk));
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switch (key->alg) {
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case ALG_WEP:
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hk.kv_type = ATH9K_CIPHER_WEP;
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break;
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case ALG_TKIP:
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hk.kv_type = ATH9K_CIPHER_TKIP;
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break;
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case ALG_CCMP:
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hk.kv_type = ATH9K_CIPHER_AES_CCM;
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break;
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default:
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return -EINVAL;
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}
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hk.kv_len = key->keylen;
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memcpy(hk.kv_val, key->key, key->keylen);
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if (!sc->sc_vaps[0])
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return -EIO;
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vif = sc->sc_vaps[0]->av_if_data;
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opmode = vif->type;
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/*
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* Strategy:
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* For _M_STA mc tx, we will not setup a key at all since we never
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* tx mc.
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* _M_STA mc rx, we will use the keyID.
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* for _M_IBSS mc tx, we will use the keyID, and no macaddr.
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* for _M_IBSS mc rx, we will alloc a slot and plumb the mac of the
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* peer node. BUT we will plumb a cleartext key so that we can do
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* perSta default key table lookup in software.
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*/
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if (is_broadcast_ether_addr(addr)) {
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switch (opmode) {
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case IEEE80211_IF_TYPE_STA:
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/* default key: could be group WPA key
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* or could be static WEP key */
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mac = NULL;
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break;
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case IEEE80211_IF_TYPE_IBSS:
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break;
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case IEEE80211_IF_TYPE_AP:
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break;
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default:
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ASSERT(0);
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break;
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}
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} else {
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mac = addr;
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}
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if (key->alg == ALG_TKIP)
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ret = ath_setkey_tkip(sc, key, &hk, mac);
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else
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ret = ath_keyset(sc, key->keyidx, &hk, mac);
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if (!ret)
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return -EIO;
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sc->sc_keytype = hk.kv_type;
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return 0;
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}
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static void ath_key_delete(struct ath_softc *sc, struct ieee80211_key_conf *key)
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{
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#define ATH_MAX_NUM_KEYS 4
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int freeslot;
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freeslot = (key->keyidx >= ATH_MAX_NUM_KEYS) ? 1 : 0;
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ath_key_reset(sc, key->keyidx, freeslot);
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#undef ATH_MAX_NUM_KEYS
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}
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static void setup_ht_cap(struct ieee80211_ht_info *ht_info)
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{
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/* Until mac80211 includes these fields */
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#define IEEE80211_HT_CAP_DSSSCCK40 0x1000
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#define IEEE80211_HT_CAP_MAXRXAMPDU_65536 0x3 /* 2 ^ 16 */
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#define IEEE80211_HT_CAP_MPDUDENSITY_8 0x6 /* 8 usec */
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ht_info->ht_supported = 1;
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ht_info->cap = (u16)IEEE80211_HT_CAP_SUP_WIDTH
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|(u16)IEEE80211_HT_CAP_MIMO_PS
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|(u16)IEEE80211_HT_CAP_SGI_40
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|(u16)IEEE80211_HT_CAP_DSSSCCK40;
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ht_info->ampdu_factor = IEEE80211_HT_CAP_MAXRXAMPDU_65536;
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ht_info->ampdu_density = IEEE80211_HT_CAP_MPDUDENSITY_8;
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/* setup supported mcs set */
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memset(ht_info->supp_mcs_set, 0, 16);
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ht_info->supp_mcs_set[0] = 0xff;
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ht_info->supp_mcs_set[1] = 0xff;
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ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
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}
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static int ath_rate2idx(struct ath_softc *sc, int rate)
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{
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int i = 0, cur_band, n_rates;
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struct ieee80211_hw *hw = sc->hw;
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cur_band = hw->conf.channel->band;
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n_rates = sc->sbands[cur_band].n_bitrates;
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for (i = 0; i < n_rates; i++) {
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if (sc->sbands[cur_band].bitrates[i].bitrate == rate)
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break;
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}
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/*
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* NB:mac80211 validates rx rate index against the supported legacy rate
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* index only (should be done against ht rates also), return the highest
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* legacy rate index for rx rate which does not match any one of the
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* supported basic and extended rates to make mac80211 happy.
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* The following hack will be cleaned up once the issue with
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* the rx rate index validation in mac80211 is fixed.
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*/
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if (i == n_rates)
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return n_rates - 1;
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return i;
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}
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static void ath9k_rx_prepare(struct ath_softc *sc,
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struct sk_buff *skb,
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struct ath_recv_status *status,
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struct ieee80211_rx_status *rx_status)
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{
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struct ieee80211_hw *hw = sc->hw;
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struct ieee80211_channel *curchan = hw->conf.channel;
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memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
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rx_status->mactime = status->tsf;
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rx_status->band = curchan->band;
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rx_status->freq = curchan->center_freq;
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rx_status->noise = ATH_DEFAULT_NOISE_FLOOR;
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rx_status->signal = rx_status->noise + status->rssi;
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rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
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rx_status->antenna = status->antenna;
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rx_status->qual = status->rssi * 100 / 64;
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if (status->flags & ATH_RX_MIC_ERROR)
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rx_status->flag |= RX_FLAG_MMIC_ERROR;
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if (status->flags & ATH_RX_FCS_ERROR)
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rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
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rx_status->flag |= RX_FLAG_TSFT;
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}
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static u8 parse_mpdudensity(u8 mpdudensity)
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{
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/*
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* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
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* 0 for no restriction
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* 1 for 1/4 us
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* 2 for 1/2 us
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* 3 for 1 us
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* 4 for 2 us
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* 5 for 4 us
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* 6 for 8 us
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* 7 for 16 us
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*/
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switch (mpdudensity) {
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case 0:
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return 0;
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case 1:
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case 2:
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case 3:
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/* Our lower layer calculations limit our precision to
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1 microsecond */
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return 1;
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case 4:
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return 2;
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case 5:
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return 4;
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case 6:
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return 8;
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case 7:
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return 16;
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default:
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return 0;
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}
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}
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static int ath9k_start(struct ieee80211_hw *hw)
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{
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struct ath_softc *sc = hw->priv;
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struct ieee80211_channel *curchan = hw->conf.channel;
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int error = 0, pos;
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DPRINTF(sc, ATH_DBG_CONFIG, "%s: Starting driver with "
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"initial channel: %d MHz\n", __func__, curchan->center_freq);
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/* setup initial channel */
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pos = ath_get_channel(sc, curchan);
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if (pos == -1) {
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DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid channel\n", __func__);
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return -EINVAL;
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}
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sc->sc_ah->ah_channels[pos].chanmode =
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(curchan->band == IEEE80211_BAND_2GHZ) ? CHANNEL_G : CHANNEL_A;
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/* open ath_dev */
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error = ath_open(sc, &sc->sc_ah->ah_channels[pos]);
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if (error) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: Unable to complete ath_open\n", __func__);
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return error;
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}
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ieee80211_wake_queues(hw);
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return 0;
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}
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static int ath9k_tx(struct ieee80211_hw *hw,
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struct sk_buff *skb)
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{
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struct ath_softc *sc = hw->priv;
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int hdrlen, padsize;
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/* Add the padding after the header if this is not already done */
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hdrlen = ieee80211_get_hdrlen_from_skb(skb);
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if (hdrlen & 3) {
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padsize = hdrlen % 4;
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if (skb_headroom(skb) < padsize)
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return -1;
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skb_push(skb, padsize);
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memmove(skb->data, skb->data + padsize, hdrlen);
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}
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DPRINTF(sc, ATH_DBG_XMIT, "%s: transmitting packet, skb: %p\n",
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__func__,
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skb);
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if (ath_tx_start(sc, skb) != 0) {
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DPRINTF(sc, ATH_DBG_XMIT, "%s: TX failed\n", __func__);
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dev_kfree_skb_any(skb);
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/* FIXME: Check for proper return value from ATH_DEV */
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return 0;
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}
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return 0;
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}
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static void ath9k_stop(struct ieee80211_hw *hw)
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{
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struct ath_softc *sc = hw->priv;
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int error;
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DPRINTF(sc, ATH_DBG_CONFIG, "%s: Driver halt\n", __func__);
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error = ath_suspend(sc);
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if (error)
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DPRINTF(sc, ATH_DBG_CONFIG,
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"%s: Device is no longer present\n", __func__);
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ieee80211_stop_queues(hw);
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}
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static int ath9k_add_interface(struct ieee80211_hw *hw,
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struct ieee80211_if_init_conf *conf)
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{
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struct ath_softc *sc = hw->priv;
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int error, ic_opmode = 0;
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/* Support only vap for now */
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if (sc->sc_nvaps)
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return -ENOBUFS;
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switch (conf->type) {
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case IEEE80211_IF_TYPE_STA:
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ic_opmode = ATH9K_M_STA;
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break;
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case IEEE80211_IF_TYPE_IBSS:
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ic_opmode = ATH9K_M_IBSS;
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break;
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default:
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: Only STA and IBSS are supported currently\n",
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__func__);
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return -EOPNOTSUPP;
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}
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DPRINTF(sc, ATH_DBG_CONFIG, "%s: Attach a VAP of type: %d\n",
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__func__,
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ic_opmode);
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error = ath_vap_attach(sc, 0, conf->vif, ic_opmode);
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if (error) {
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DPRINTF(sc, ATH_DBG_FATAL,
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"%s: Unable to attach vap, error: %d\n",
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__func__, error);
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return error;
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}
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return 0;
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}
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static void ath9k_remove_interface(struct ieee80211_hw *hw,
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struct ieee80211_if_init_conf *conf)
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{
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struct ath_softc *sc = hw->priv;
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struct ath_vap *avp;
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int error;
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DPRINTF(sc, ATH_DBG_CONFIG, "%s: Detach VAP\n", __func__);
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avp = sc->sc_vaps[0];
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if (avp == NULL) {
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DPRINTF(sc, ATH_DBG_FATAL, "%s: Invalid interface\n",
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__func__);
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return;
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}
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#ifdef CONFIG_SLOW_ANT_DIV
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ath_slow_ant_div_stop(&sc->sc_antdiv);
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#endif
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/* Update ratectrl */
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ath_rate_newstate(sc, avp);
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/* Reclaim beacon resources */
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if (sc->sc_opmode == ATH9K_M_HOSTAP || sc->sc_opmode == ATH9K_M_IBSS) {
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ath9k_hw_stoptxdma(sc->sc_ah, sc->sc_bhalq);
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ath_beacon_return(sc, avp);
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}
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/* Set interrupt mask */
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sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
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ath9k_hw_set_interrupts(sc->sc_ah, sc->sc_imask & ~ATH9K_INT_GLOBAL);
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sc->sc_beacons = 0;
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error = ath_vap_detach(sc, 0);
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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;
|
|
|
|
if (sc->sc_curaid && hw->conf.ht_conf.ht_supported)
|
|
sc->sc_ah->ah_channels[pos].chanmode =
|
|
ath_get_extchanmode(sc, curchan);
|
|
|
|
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_tx_queue_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;
|
|
}
|
|
|
|
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.hw_caps & ATH9K_HW_CAP_HT)
|
|
/* 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 (test_bit(ATH9K_MODE_11A, sc->sc_ah->ah_caps.wireless_modes)) {
|
|
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.hw_caps & ATH9K_HW_CAP_HT)
|
|
/* 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);
|