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-rw-r--r--drivers/net/wireless/ath/ar9170/main.c2190
1 files changed, 0 insertions, 2190 deletions
diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
deleted file mode 100644
index ccc2edaaeda0..000000000000
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ /dev/null
@@ -1,2190 +0,0 @@
-/*
- * Atheros AR9170 driver
- *
- * mac80211 interaction code
- *
- * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, Christian Lamparter <chunkeey@web.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, see
- * http://www.gnu.org/licenses/.
- *
- * This file incorporates work covered by the following copyright and
- * permission notice:
- * Copyright (c) 2007-2008 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.
- */
-
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-#include "ar9170.h"
-#include "hw.h"
-#include "cmd.h"
-
-static int modparam_nohwcrypt;
-module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
-MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
-
-#define RATE(_bitrate, _hw_rate, _txpidx, _flags) { \
- .bitrate = (_bitrate), \
- .flags = (_flags), \
- .hw_value = (_hw_rate) | (_txpidx) << 4, \
-}
-
-static struct ieee80211_rate __ar9170_ratetable[] = {
- RATE(10, 0, 0, 0),
- RATE(20, 1, 1, IEEE80211_RATE_SHORT_PREAMBLE),
- RATE(55, 2, 2, IEEE80211_RATE_SHORT_PREAMBLE),
- RATE(110, 3, 3, IEEE80211_RATE_SHORT_PREAMBLE),
- RATE(60, 0xb, 0, 0),
- RATE(90, 0xf, 0, 0),
- RATE(120, 0xa, 0, 0),
- RATE(180, 0xe, 0, 0),
- RATE(240, 0x9, 0, 0),
- RATE(360, 0xd, 1, 0),
- RATE(480, 0x8, 2, 0),
- RATE(540, 0xc, 3, 0),
-};
-#undef RATE
-
-#define ar9170_g_ratetable (__ar9170_ratetable + 0)
-#define ar9170_g_ratetable_size 12
-#define ar9170_a_ratetable (__ar9170_ratetable + 4)
-#define ar9170_a_ratetable_size 8
-
-/*
- * NB: The hw_value is used as an index into the ar9170_phy_freq_params
- * array in phy.c so that we don't have to do frequency lookups!
- */
-#define CHAN(_freq, _idx) { \
- .center_freq = (_freq), \
- .hw_value = (_idx), \
- .max_power = 18, /* XXX */ \
-}
-
-static struct ieee80211_channel ar9170_2ghz_chantable[] = {
- CHAN(2412, 0),
- CHAN(2417, 1),
- CHAN(2422, 2),
- CHAN(2427, 3),
- CHAN(2432, 4),
- CHAN(2437, 5),
- CHAN(2442, 6),
- CHAN(2447, 7),
- CHAN(2452, 8),
- CHAN(2457, 9),
- CHAN(2462, 10),
- CHAN(2467, 11),
- CHAN(2472, 12),
- CHAN(2484, 13),
-};
-
-static struct ieee80211_channel ar9170_5ghz_chantable[] = {
- CHAN(4920, 14),
- CHAN(4940, 15),
- CHAN(4960, 16),
- CHAN(4980, 17),
- CHAN(5040, 18),
- CHAN(5060, 19),
- CHAN(5080, 20),
- CHAN(5180, 21),
- CHAN(5200, 22),
- CHAN(5220, 23),
- CHAN(5240, 24),
- CHAN(5260, 25),
- CHAN(5280, 26),
- CHAN(5300, 27),
- CHAN(5320, 28),
- CHAN(5500, 29),
- CHAN(5520, 30),
- CHAN(5540, 31),
- CHAN(5560, 32),
- CHAN(5580, 33),
- CHAN(5600, 34),
- CHAN(5620, 35),
- CHAN(5640, 36),
- CHAN(5660, 37),
- CHAN(5680, 38),
- CHAN(5700, 39),
- CHAN(5745, 40),
- CHAN(5765, 41),
- CHAN(5785, 42),
- CHAN(5805, 43),
- CHAN(5825, 44),
- CHAN(5170, 45),
- CHAN(5190, 46),
- CHAN(5210, 47),
- CHAN(5230, 48),
-};
-#undef CHAN
-
-#define AR9170_HT_CAP \
-{ \
- .ht_supported = true, \
- .cap = IEEE80211_HT_CAP_MAX_AMSDU | \
- IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
- IEEE80211_HT_CAP_SGI_40 | \
- IEEE80211_HT_CAP_GRN_FLD | \
- IEEE80211_HT_CAP_DSSSCCK40 | \
- IEEE80211_HT_CAP_SM_PS, \
- .ampdu_factor = 3, \
- .ampdu_density = 6, \
- .mcs = { \
- .rx_mask = { 0xff, 0xff, 0, 0, 0x1, 0, 0, 0, 0, 0, }, \
- .rx_highest = cpu_to_le16(300), \
- .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \
- }, \
-}
-
-static struct ieee80211_supported_band ar9170_band_2GHz = {
- .channels = ar9170_2ghz_chantable,
- .n_channels = ARRAY_SIZE(ar9170_2ghz_chantable),
- .bitrates = ar9170_g_ratetable,
- .n_bitrates = ar9170_g_ratetable_size,
- .ht_cap = AR9170_HT_CAP,
-};
-
-static struct ieee80211_supported_band ar9170_band_5GHz = {
- .channels = ar9170_5ghz_chantable,
- .n_channels = ARRAY_SIZE(ar9170_5ghz_chantable),
- .bitrates = ar9170_a_ratetable,
- .n_bitrates = ar9170_a_ratetable_size,
- .ht_cap = AR9170_HT_CAP,
-};
-
-static void ar9170_tx(struct ar9170 *ar);
-
-static inline u16 ar9170_get_seq_h(struct ieee80211_hdr *hdr)
-{
- return le16_to_cpu(hdr->seq_ctrl) >> 4;
-}
-
-static inline u16 ar9170_get_seq(struct sk_buff *skb)
-{
- struct ar9170_tx_control *txc = (void *) skb->data;
- return ar9170_get_seq_h((void *) txc->frame_data);
-}
-
-#ifdef AR9170_QUEUE_DEBUG
-static void ar9170_print_txheader(struct ar9170 *ar, struct sk_buff *skb)
-{
- struct ar9170_tx_control *txc = (void *) skb->data;
- struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
- struct ar9170_tx_info *arinfo = (void *) txinfo->rate_driver_data;
- struct ieee80211_hdr *hdr = (void *) txc->frame_data;
-
- wiphy_debug(ar->hw->wiphy,
- "=> FRAME [skb:%p, q:%d, DA:[%pM] s:%d "
- "mac_ctrl:%04x, phy_ctrl:%08x, timeout:[%d ms]]\n",
- skb, skb_get_queue_mapping(skb),
- ieee80211_get_DA(hdr), ar9170_get_seq_h(hdr),
- le16_to_cpu(txc->mac_control), le32_to_cpu(txc->phy_control),
- jiffies_to_msecs(arinfo->timeout - jiffies));
-}
-
-static void __ar9170_dump_txqueue(struct ar9170 *ar,
- struct sk_buff_head *queue)
-{
- struct sk_buff *skb;
- int i = 0;
-
- printk(KERN_DEBUG "---[ cut here ]---\n");
- wiphy_debug(ar->hw->wiphy, "%d entries in queue.\n",
- skb_queue_len(queue));
-
- skb_queue_walk(queue, skb) {
- printk(KERN_DEBUG "index:%d =>\n", i++);
- ar9170_print_txheader(ar, skb);
- }
- if (i != skb_queue_len(queue))
- printk(KERN_DEBUG "WARNING: queue frame counter "
- "mismatch %d != %d\n", skb_queue_len(queue), i);
- printk(KERN_DEBUG "---[ end ]---\n");
-}
-#endif /* AR9170_QUEUE_DEBUG */
-
-#ifdef AR9170_QUEUE_DEBUG
-static void ar9170_dump_txqueue(struct ar9170 *ar,
- struct sk_buff_head *queue)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&queue->lock, flags);
- __ar9170_dump_txqueue(ar, queue);
- spin_unlock_irqrestore(&queue->lock, flags);
-}
-#endif /* AR9170_QUEUE_DEBUG */
-
-#ifdef AR9170_QUEUE_STOP_DEBUG
-static void __ar9170_dump_txstats(struct ar9170 *ar)
-{
- int i;
-
- wiphy_debug(ar->hw->wiphy, "QoS queue stats\n");
-
- for (i = 0; i < __AR9170_NUM_TXQ; i++)
- wiphy_debug(ar->hw->wiphy,
- "queue:%d limit:%d len:%d waitack:%d stopped:%d\n",
- i, ar->tx_stats[i].limit, ar->tx_stats[i].len,
- skb_queue_len(&ar->tx_status[i]),
- ieee80211_queue_stopped(ar->hw, i));
-}
-#endif /* AR9170_QUEUE_STOP_DEBUG */
-
-/* caller must guarantee exclusive access for _bin_ queue. */
-static void ar9170_recycle_expired(struct ar9170 *ar,
- struct sk_buff_head *queue,
- struct sk_buff_head *bin)
-{
- struct sk_buff *skb, *old = NULL;
- unsigned long flags;
-
- spin_lock_irqsave(&queue->lock, flags);
- while ((skb = skb_peek(queue))) {
- struct ieee80211_tx_info *txinfo;
- struct ar9170_tx_info *arinfo;
-
- txinfo = IEEE80211_SKB_CB(skb);
- arinfo = (void *) txinfo->rate_driver_data;
-
- if (time_is_before_jiffies(arinfo->timeout)) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "[%ld > %ld] frame expired => recycle\n",
- jiffies, arinfo->timeout);
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
- __skb_unlink(skb, queue);
- __skb_queue_tail(bin, skb);
- } else {
- break;
- }
-
- if (unlikely(old == skb)) {
- /* bail out - queue is shot. */
-
- WARN_ON(1);
- break;
- }
- old = skb;
- }
- spin_unlock_irqrestore(&queue->lock, flags);
-}
-
-static void ar9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
- u16 tx_status)
-{
- struct ieee80211_tx_info *txinfo;
- unsigned int retries = 0;
-
- txinfo = IEEE80211_SKB_CB(skb);
- ieee80211_tx_info_clear_status(txinfo);
-
- switch (tx_status) {
- case AR9170_TX_STATUS_RETRY:
- retries = 2;
- case AR9170_TX_STATUS_COMPLETE:
- txinfo->flags |= IEEE80211_TX_STAT_ACK;
- break;
-
- case AR9170_TX_STATUS_FAILED:
- retries = ar->hw->conf.long_frame_max_tx_count;
- break;
-
- default:
- wiphy_err(ar->hw->wiphy,
- "invalid tx_status response (%x)\n", tx_status);
- break;
- }
-
- txinfo->status.rates[0].count = retries + 1;
- skb_pull(skb, sizeof(struct ar9170_tx_control));
- ieee80211_tx_status_irqsafe(ar->hw, skb);
-}
-
-void ar9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb)
-{
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ar9170_tx_info *arinfo = (void *) info->rate_driver_data;
- unsigned int queue = skb_get_queue_mapping(skb);
- unsigned long flags;
-
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- ar->tx_stats[queue].len--;
-
- if (ar->tx_stats[queue].len < AR9170_NUM_TX_LIMIT_SOFT) {
-#ifdef AR9170_QUEUE_STOP_DEBUG
- wiphy_debug(ar->hw->wiphy, "wake queue %d\n", queue);
- __ar9170_dump_txstats(ar);
-#endif /* AR9170_QUEUE_STOP_DEBUG */
- ieee80211_wake_queue(ar->hw, queue);
- }
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
- if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
- ar9170_tx_status(ar, skb, AR9170_TX_STATUS_FAILED);
- } else {
- arinfo->timeout = jiffies +
- msecs_to_jiffies(AR9170_TX_TIMEOUT);
-
- skb_queue_tail(&ar->tx_status[queue], skb);
- }
-
- if (!ar->tx_stats[queue].len &&
- !skb_queue_empty(&ar->tx_pending[queue])) {
- ar9170_tx(ar);
- }
-}
-
-static struct sk_buff *ar9170_get_queued_skb(struct ar9170 *ar,
- const u8 *mac,
- struct sk_buff_head *queue,
- const u32 rate)
-{
- unsigned long flags;
- struct sk_buff *skb;
-
- /*
- * Unfortunately, the firmware does not tell to which (queued) frame
- * this transmission status report belongs to.
- *
- * So we have to make risky guesses - with the scarce information
- * the firmware provided (-> destination MAC, and phy_control) -
- * and hope that we picked the right one...
- */
-
- spin_lock_irqsave(&queue->lock, flags);
- skb_queue_walk(queue, skb) {
- struct ar9170_tx_control *txc = (void *) skb->data;
- struct ieee80211_hdr *hdr = (void *) txc->frame_data;
- u32 r;
-
- if (mac && compare_ether_addr(ieee80211_get_DA(hdr), mac)) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "skip frame => DA %pM != %pM\n",
- mac, ieee80211_get_DA(hdr));
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
- continue;
- }
-
- r = (le32_to_cpu(txc->phy_control) & AR9170_TX_PHY_MCS_MASK) >>
- AR9170_TX_PHY_MCS_SHIFT;
-
- if ((rate != AR9170_TX_INVALID_RATE) && (r != rate)) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "skip frame => rate %d != %d\n", rate, r);
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
- continue;
- }
-
- __skb_unlink(skb, queue);
- spin_unlock_irqrestore(&queue->lock, flags);
- return skb;
- }
-
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_err(ar->hw->wiphy,
- "ESS:[%pM] does not have any outstanding frames in queue.\n",
- mac);
- __ar9170_dump_txqueue(ar, queue);
-#endif /* AR9170_QUEUE_DEBUG */
- spin_unlock_irqrestore(&queue->lock, flags);
-
- return NULL;
-}
-
-/*
- * This worker tries to keeps an maintain tx_status queues.
- * So we can guarantee that incoming tx_status reports are
- * actually for a pending frame.
- */
-
-static void ar9170_tx_janitor(struct work_struct *work)
-{
- struct ar9170 *ar = container_of(work, struct ar9170,
- tx_janitor.work);
- struct sk_buff_head waste;
- unsigned int i;
- bool resched = false;
-
- if (unlikely(!IS_STARTED(ar)))
- return ;
-
- skb_queue_head_init(&waste);
-
- for (i = 0; i < __AR9170_NUM_TXQ; i++) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy, "garbage collector scans queue:%d\n",
- i);
- ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
- ar9170_dump_txqueue(ar, &ar->tx_status[i]);
-#endif /* AR9170_QUEUE_DEBUG */
-
- ar9170_recycle_expired(ar, &ar->tx_status[i], &waste);
- ar9170_recycle_expired(ar, &ar->tx_pending[i], &waste);
- skb_queue_purge(&waste);
-
- if (!skb_queue_empty(&ar->tx_status[i]) ||
- !skb_queue_empty(&ar->tx_pending[i]))
- resched = true;
- }
-
- if (!resched)
- return;
-
- ieee80211_queue_delayed_work(ar->hw,
- &ar->tx_janitor,
- msecs_to_jiffies(AR9170_JANITOR_DELAY));
-}
-
-void ar9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len)
-{
- struct ar9170_cmd_response *cmd = (void *) buf;
-
- if ((cmd->type & 0xc0) != 0xc0) {
- ar->callback_cmd(ar, len, buf);
- return;
- }
-
- /* hardware event handlers */
- switch (cmd->type) {
- case 0xc1: {
- /*
- * TX status notification:
- * bytes: 0c c1 XX YY M1 M2 M3 M4 M5 M6 R4 R3 R2 R1 S2 S1
- *
- * XX always 81
- * YY always 00
- * M1-M6 is the MAC address
- * R1-R4 is the transmit rate
- * S1-S2 is the transmit status
- */
-
- struct sk_buff *skb;
- u32 phy = le32_to_cpu(cmd->tx_status.rate);
- u32 q = (phy & AR9170_TX_PHY_QOS_MASK) >>
- AR9170_TX_PHY_QOS_SHIFT;
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "recv tx_status for %pm, p:%08x, q:%d\n",
- cmd->tx_status.dst, phy, q);
-#endif /* AR9170_QUEUE_DEBUG */
-
- skb = ar9170_get_queued_skb(ar, cmd->tx_status.dst,
- &ar->tx_status[q],
- AR9170_TX_INVALID_RATE);
- if (unlikely(!skb))
- return ;
-
- ar9170_tx_status(ar, skb, le16_to_cpu(cmd->tx_status.status));
- break;
- }
-
- case 0xc0:
- /*
- * pre-TBTT event
- */
- if (ar->vif && ar->vif->type == NL80211_IFTYPE_AP)
- ieee80211_queue_work(ar->hw, &ar->beacon_work);
- break;
-
- case 0xc2:
- /*
- * (IBSS) beacon send notification
- * bytes: 04 c2 XX YY B4 B3 B2 B1
- *
- * XX always 80
- * YY always 00
- * B1-B4 "should" be the number of send out beacons.
- */
- break;
-
- case 0xc3:
- /* End of Atim Window */
- break;
-
- case 0xc4:
- /* BlockACK bitmap */
- break;
-
- case 0xc5:
- /* BlockACK events */
- break;
-
- case 0xc6:
- /* Watchdog Interrupt */
- break;
-
- case 0xc9:
- /* retransmission issue / SIFS/EIFS collision ?! */
- break;
-
- /* firmware debug */
- case 0xca:
- printk(KERN_DEBUG "ar9170 FW: %.*s\n", len - 4,
- (char *)buf + 4);
- break;
- case 0xcb:
- len -= 4;
-
- switch (len) {
- case 1:
- printk(KERN_DEBUG "ar9170 FW: u8: %#.2x\n",
- *((char *)buf + 4));
- break;
- case 2:
- printk(KERN_DEBUG "ar9170 FW: u8: %#.4x\n",
- le16_to_cpup((__le16 *)((char *)buf + 4)));
- break;
- case 4:
- printk(KERN_DEBUG "ar9170 FW: u8: %#.8x\n",
- le32_to_cpup((__le32 *)((char *)buf + 4)));
- break;
- case 8:
- printk(KERN_DEBUG "ar9170 FW: u8: %#.16lx\n",
- (unsigned long)le64_to_cpup(
- (__le64 *)((char *)buf + 4)));
- break;
- }
- break;
- case 0xcc:
- print_hex_dump_bytes("ar9170 FW:", DUMP_PREFIX_NONE,
- (char *)buf + 4, len - 4);
- break;
-
- default:
- pr_info("received unhandled event %x\n", cmd->type);
- print_hex_dump_bytes("dump:", DUMP_PREFIX_NONE, buf, len);
- break;
- }
-}
-
-static void ar9170_rx_reset_rx_mpdu(struct ar9170 *ar)
-{
- memset(&ar->rx_mpdu.plcp, 0, sizeof(struct ar9170_rx_head));
- ar->rx_mpdu.has_plcp = false;
-}
-
-int ar9170_nag_limiter(struct ar9170 *ar)
-{
- bool print_message;
-
- /*
- * we expect all sorts of errors in promiscuous mode.
- * don't bother with it, it's OK!
- */
- if (ar->sniffer_enabled)
- return false;
-
- /*
- * only go for frequent errors! The hardware tends to
- * do some stupid thing once in a while under load, in
- * noisy environments or just for fun!
- */
- if (time_before(jiffies, ar->bad_hw_nagger) && net_ratelimit())
- print_message = true;
- else
- print_message = false;
-
- /* reset threshold for "once in a while" */
- ar->bad_hw_nagger = jiffies + HZ / 4;
- return print_message;
-}
-
-static int ar9170_rx_mac_status(struct ar9170 *ar,
- struct ar9170_rx_head *head,
- struct ar9170_rx_macstatus *mac,
- struct ieee80211_rx_status *status)
-{
- u8 error, decrypt;
-
- BUILD_BUG_ON(sizeof(struct ar9170_rx_head) != 12);
- BUILD_BUG_ON(sizeof(struct ar9170_rx_macstatus) != 4);
-
- error = mac->error;
- if (error & AR9170_RX_ERROR_MMIC) {
- status->flag |= RX_FLAG_MMIC_ERROR;
- error &= ~AR9170_RX_ERROR_MMIC;
- }
-
- if (error & AR9170_RX_ERROR_PLCP) {
- status->flag |= RX_FLAG_FAILED_PLCP_CRC;
- error &= ~AR9170_RX_ERROR_PLCP;
-
- if (!(ar->filter_state & FIF_PLCPFAIL))
- return -EINVAL;
- }
-
- if (error & AR9170_RX_ERROR_FCS) {
- status->flag |= RX_FLAG_FAILED_FCS_CRC;
- error &= ~AR9170_RX_ERROR_FCS;
-
- if (!(ar->filter_state & FIF_FCSFAIL))
- return -EINVAL;
- }
-
- decrypt = ar9170_get_decrypt_type(mac);
- if (!(decrypt & AR9170_RX_ENC_SOFTWARE) &&
- decrypt != AR9170_ENC_ALG_NONE)
- status->flag |= RX_FLAG_DECRYPTED;
-
- /* ignore wrong RA errors */
- error &= ~AR9170_RX_ERROR_WRONG_RA;
-
- if (error & AR9170_RX_ERROR_DECRYPT) {
- error &= ~AR9170_RX_ERROR_DECRYPT;
- /*
- * Rx decryption is done in place,
- * the original data is lost anyway.
- */
-
- return -EINVAL;
- }
-
- /* drop any other error frames */
- if (unlikely(error)) {
- /* TODO: update netdevice's RX dropped/errors statistics */
-
- if (ar9170_nag_limiter(ar))
- wiphy_debug(ar->hw->wiphy,
- "received frame with suspicious error code (%#x).\n",
- error);
-
- return -EINVAL;
- }
-
- status->band = ar->channel->band;
- status->freq = ar->channel->center_freq;
-
- switch (mac->status & AR9170_RX_STATUS_MODULATION_MASK) {
- case AR9170_RX_STATUS_MODULATION_CCK:
- if (mac->status & AR9170_RX_STATUS_SHORT_PREAMBLE)
- status->flag |= RX_FLAG_SHORTPRE;
- switch (head->plcp[0]) {
- case 0x0a:
- status->rate_idx = 0;
- break;
- case 0x14:
- status->rate_idx = 1;
- break;
- case 0x37:
- status->rate_idx = 2;
- break;
- case 0x6e:
- status->rate_idx = 3;
- break;
- default:
- if (ar9170_nag_limiter(ar))
- wiphy_err(ar->hw->wiphy,
- "invalid plcp cck rate (%x).\n",
- head->plcp[0]);
- return -EINVAL;
- }
- break;
-
- case AR9170_RX_STATUS_MODULATION_DUPOFDM:
- case AR9170_RX_STATUS_MODULATION_OFDM:
- switch (head->plcp[0] & 0xf) {
- case 0xb:
- status->rate_idx = 0;
- break;
- case 0xf:
- status->rate_idx = 1;
- break;
- case 0xa:
- status->rate_idx = 2;
- break;
- case 0xe:
- status->rate_idx = 3;
- break;
- case 0x9:
- status->rate_idx = 4;
- break;
- case 0xd:
- status->rate_idx = 5;
- break;
- case 0x8:
- status->rate_idx = 6;
- break;
- case 0xc:
- status->rate_idx = 7;
- break;
- default:
- if (ar9170_nag_limiter(ar))
- wiphy_err(ar->hw->wiphy,
- "invalid plcp ofdm rate (%x).\n",
- head->plcp[0]);
- return -EINVAL;
- }
- if (status->band == IEEE80211_BAND_2GHZ)
- status->rate_idx += 4;
- break;
-
- case AR9170_RX_STATUS_MODULATION_HT:
- if (head->plcp[3] & 0x80)
- status->flag |= RX_FLAG_40MHZ;
- if (head->plcp[6] & 0x80)
- status->flag |= RX_FLAG_SHORT_GI;
-
- status->rate_idx = clamp(0, 75, head->plcp[6] & 0x7f);
- status->flag |= RX_FLAG_HT;
- break;
-
- default:
- if (ar9170_nag_limiter(ar))
- wiphy_err(ar->hw->wiphy, "invalid modulation\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static void ar9170_rx_phy_status(struct ar9170 *ar,
- struct ar9170_rx_phystatus *phy,
- struct ieee80211_rx_status *status)
-{
- int i;
-
- BUILD_BUG_ON(sizeof(struct ar9170_rx_phystatus) != 20);
-
- for (i = 0; i < 3; i++)
- if (phy->rssi[i] != 0x80)
- status->antenna |= BIT(i);
-
- /* post-process RSSI */
- for (i = 0; i < 7; i++)
- if (phy->rssi[i] & 0x80)
- phy->rssi[i] = ((phy->rssi[i] & 0x7f) + 1) & 0x7f;
-
- /* TODO: we could do something with phy_errors */
- status->signal = ar->noise[0] + phy->rssi_combined;
-}
-
-static struct sk_buff *ar9170_rx_copy_data(u8 *buf, int len)
-{
- struct sk_buff *skb;
- int reserved = 0;
- struct ieee80211_hdr *hdr = (void *) buf;
-
- if (ieee80211_is_data_qos(hdr->frame_control)) {
- u8 *qc = ieee80211_get_qos_ctl(hdr);
- reserved += NET_IP_ALIGN;
-
- if (*qc & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
- reserved += NET_IP_ALIGN;
- }
-
- if (ieee80211_has_a4(hdr->frame_control))
- reserved += NET_IP_ALIGN;
-
- reserved = 32 + (reserved & NET_IP_ALIGN);
-
- skb = dev_alloc_skb(len + reserved);
- if (likely(skb)) {
- skb_reserve(skb, reserved);
- memcpy(skb_put(skb, len), buf, len);
- }
-
- return skb;
-}
-
-/*
- * If the frame alignment is right (or the kernel has
- * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS), and there
- * is only a single MPDU in the USB frame, then we could
- * submit to mac80211 the SKB directly. However, since
- * there may be multiple packets in one SKB in stream
- * mode, and we need to observe the proper ordering,
- * this is non-trivial.
- */
-
-static void ar9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
-{
- struct ar9170_rx_head *head;
- struct ar9170_rx_macstatus *mac;
- struct ar9170_rx_phystatus *phy = NULL;
- struct ieee80211_rx_status status;
- struct sk_buff *skb;
- int mpdu_len;
-
- if (unlikely(!IS_STARTED(ar) || len < (sizeof(*mac))))
- return ;
-
- /* Received MPDU */
- mpdu_len = len - sizeof(*mac);
-
- mac = (void *)(buf + mpdu_len);
- if (unlikely(mac->error & AR9170_RX_ERROR_FATAL)) {
- /* this frame is too damaged and can't be used - drop it */
-
- return ;
- }
-
- switch (mac->status & AR9170_RX_STATUS_MPDU_MASK) {
- case AR9170_RX_STATUS_MPDU_FIRST:
- /* first mpdu packet has the plcp header */
- if (likely(mpdu_len >= sizeof(struct ar9170_rx_head))) {
- head = (void *) buf;
- memcpy(&ar->rx_mpdu.plcp, (void *) buf,
- sizeof(struct ar9170_rx_head));
-
- mpdu_len -= sizeof(struct ar9170_rx_head);
- buf += sizeof(struct ar9170_rx_head);
- ar->rx_mpdu.has_plcp = true;
- } else {
- if (ar9170_nag_limiter(ar))
- wiphy_err(ar->hw->wiphy,
- "plcp info is clipped.\n");
- return ;
- }
- break;
-
- case AR9170_RX_STATUS_MPDU_LAST:
- /* last mpdu has a extra tail with phy status information */
-
- if (likely(mpdu_len >= sizeof(struct ar9170_rx_phystatus))) {
- mpdu_len -= sizeof(struct ar9170_rx_phystatus);
- phy = (void *)(buf + mpdu_len);
- } else {
- if (ar9170_nag_limiter(ar))
- wiphy_err(ar->hw->wiphy,
- "frame tail is clipped.\n");
- return ;
- }
-
- case AR9170_RX_STATUS_MPDU_MIDDLE:
- /* middle mpdus are just data */
- if (unlikely(!ar->rx_mpdu.has_plcp)) {
- if (!ar9170_nag_limiter(ar))
- return ;
-
- wiphy_err(ar->hw->wiphy,
- "rx stream did not start with a first_mpdu frame tag.\n");
-
- return ;
- }
-
- head = &ar->rx_mpdu.plcp;
- break;
-
- case AR9170_RX_STATUS_MPDU_SINGLE:
- /* single mpdu - has plcp (head) and phy status (tail) */
- head = (void *) buf;
-
- mpdu_len -= sizeof(struct ar9170_rx_head);
- mpdu_len -= sizeof(struct ar9170_rx_phystatus);
-
- buf += sizeof(struct ar9170_rx_head);
- phy = (void *)(buf + mpdu_len);
- break;
-
- default:
- BUG_ON(1);
- break;
- }
-
- if (unlikely(mpdu_len < FCS_LEN))
- return ;
-
- memset(&status, 0, sizeof(status));
- if (unlikely(ar9170_rx_mac_status(ar, head, mac, &status)))
- return ;
-
- if (phy)
- ar9170_rx_phy_status(ar, phy, &status);
-
- skb = ar9170_rx_copy_data(buf, mpdu_len);
- if (likely(skb)) {
- memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
- ieee80211_rx_irqsafe(ar->hw, skb);
- }
-}
-
-void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb)
-{
- unsigned int i, tlen, resplen, wlen = 0, clen = 0;
- u8 *tbuf, *respbuf;
-
- tbuf = skb->data;
- tlen = skb->len;
-
- while (tlen >= 4) {
- clen = tbuf[1] << 8 | tbuf[0];
- wlen = ALIGN(clen, 4);
-
- /* check if this is stream has a valid tag.*/
- if (tbuf[2] != 0 || tbuf[3] != 0x4e) {
- /*
- * TODO: handle the highly unlikely event that the
- * corrupted stream has the TAG at the right position.
- */
-
- /* check if the frame can be repaired. */
- if (!ar->rx_failover_missing) {
- /* this is no "short read". */
- if (ar9170_nag_limiter(ar)) {
- wiphy_err(ar->hw->wiphy,
- "missing tag!\n");
- goto err_telluser;
- } else
- goto err_silent;
- }
-
- if (ar->rx_failover_missing > tlen) {
- if (ar9170_nag_limiter(ar)) {
- wiphy_err(ar->hw->wiphy,
- "possible multi stream corruption!\n");
- goto err_telluser;
- } else
- goto err_silent;
- }
-
- memcpy(skb_put(ar->rx_failover, tlen), tbuf, tlen);
- ar->rx_failover_missing -= tlen;
-
- if (ar->rx_failover_missing <= 0) {
- /*
- * nested ar9170_rx call!
- * termination is guaranteed, even when the
- * combined frame also have a element with
- * a bad tag.
- */
-
- ar->rx_failover_missing = 0;
- ar9170_rx(ar, ar->rx_failover);
-
- skb_reset_tail_pointer(ar->rx_failover);
- skb_trim(ar->rx_failover, 0);
- }
-
- return ;
- }
-
- /* check if stream is clipped */
- if (wlen > tlen - 4) {
- if (ar->rx_failover_missing) {
- /* TODO: handle double stream corruption. */
- if (ar9170_nag_limiter(ar)) {
- wiphy_err(ar->hw->wiphy,
- "double rx stream corruption!\n");
- goto err_telluser;
- } else
- goto err_silent;
- }
-
- /*
- * save incomplete data set.
- * the firmware will resend the missing bits when
- * the rx - descriptor comes round again.
- */
-
- memcpy(skb_put(ar->rx_failover, tlen), tbuf, tlen);
- ar->rx_failover_missing = clen - tlen;
- return ;
- }
- resplen = clen;
- respbuf = tbuf + 4;
- tbuf += wlen + 4;
- tlen -= wlen + 4;
-
- i = 0;
-
- /* weird thing, but this is the same in the original driver */
- while (resplen > 2 && i < 12 &&
- respbuf[0] == 0xff && respbuf[1] == 0xff) {
- i += 2;
- resplen -= 2;
- respbuf += 2;
- }
-
- if (resplen < 4)
- continue;
-
- /* found the 6 * 0xffff marker? */
- if (i == 12)
- ar9170_handle_command_response(ar, respbuf, resplen);
- else
- ar9170_handle_mpdu(ar, respbuf, clen);
- }
-
- if (tlen) {
- if (net_ratelimit())
- wiphy_err(ar->hw->wiphy,
- "%d bytes of unprocessed data left in rx stream!\n",
- tlen);
-
- goto err_telluser;
- }
-
- return ;
-
-err_telluser:
- wiphy_err(ar->hw->wiphy,
- "damaged RX stream data [want:%d, data:%d, rx:%d, pending:%d ]\n",
- clen, wlen, tlen, ar->rx_failover_missing);
-
- if (ar->rx_failover_missing)
- print_hex_dump_bytes("rxbuf:", DUMP_PREFIX_OFFSET,
- ar->rx_failover->data,
- ar->rx_failover->len);
-
- print_hex_dump_bytes("stream:", DUMP_PREFIX_OFFSET,
- skb->data, skb->len);
-
- wiphy_err(ar->hw->wiphy,
- "If you see this message frequently, please check your hardware and cables.\n");
-
-err_silent:
- if (ar->rx_failover_missing) {
- skb_reset_tail_pointer(ar->rx_failover);
- skb_trim(ar->rx_failover, 0);
- ar->rx_failover_missing = 0;
- }
-}
-
-#define AR9170_FILL_QUEUE(queue, ai_fs, cwmin, cwmax, _txop) \
-do { \
- queue.aifs = ai_fs; \
- queue.cw_min = cwmin; \
- queue.cw_max = cwmax; \
- queue.txop = _txop; \
-} while (0)
-
-static int ar9170_op_start(struct ieee80211_hw *hw)
-{
- struct ar9170 *ar = hw->priv;
- int err, i;
-
- mutex_lock(&ar->mutex);
-
- /* reinitialize queues statistics */
- memset(&ar->tx_stats, 0, sizeof(ar->tx_stats));
- for (i = 0; i < __AR9170_NUM_TXQ; i++)
- ar->tx_stats[i].limit = AR9170_TXQ_DEPTH;
-
- /* reset QoS defaults */
- AR9170_FILL_QUEUE(ar->edcf[0], 3, 15, 1023, 0); /* BEST EFFORT*/
- AR9170_FILL_QUEUE(ar->edcf[1], 7, 15, 1023, 0); /* BACKGROUND */
- AR9170_FILL_QUEUE(ar->edcf[2], 2, 7, 15, 94); /* VIDEO */
- AR9170_FILL_QUEUE(ar->edcf[3], 2, 3, 7, 47); /* VOICE */
- AR9170_FILL_QUEUE(ar->edcf[4], 2, 3, 7, 0); /* SPECIAL */
-
- /* set sane AMPDU defaults */
- ar->global_ampdu_density = 6;
- ar->global_ampdu_factor = 3;
-
- ar->bad_hw_nagger = jiffies;
-
- err = ar->open(ar);
- if (err)
- goto out;
-
- err = ar9170_init_mac(ar);
- if (err)
- goto out;
-
- err = ar9170_set_qos(ar);
- if (err)
- goto out;
-
- err = ar9170_init_phy(ar, IEEE80211_BAND_2GHZ);
- if (err)
- goto out;
-
- err = ar9170_init_rf(ar);
- if (err)
- goto out;
-
- /* start DMA */
- err = ar9170_write_reg(ar, 0x1c3d30, 0x100);
- if (err)
- goto out;
-
- ar->state = AR9170_STARTED;
-
-out:
- mutex_unlock(&ar->mutex);
- return err;
-}
-
-static void ar9170_op_stop(struct ieee80211_hw *hw)
-{
- struct ar9170 *ar = hw->priv;
- unsigned int i;
-
- if (IS_STARTED(ar))
- ar->state = AR9170_IDLE;
-
- cancel_delayed_work_sync(&ar->tx_janitor);
-#ifdef CONFIG_AR9170_LEDS
- cancel_delayed_work_sync(&ar->led_work);
-#endif
- cancel_work_sync(&ar->beacon_work);
-
- mutex_lock(&ar->mutex);
-
- if (IS_ACCEPTING_CMD(ar)) {
- ar9170_set_leds_state(ar, 0);
-
- /* stop DMA */
- ar9170_write_reg(ar, 0x1c3d30, 0);
- ar->stop(ar);
- }
-
- for (i = 0; i < __AR9170_NUM_TXQ; i++) {
- skb_queue_purge(&ar->tx_pending[i]);
- skb_queue_purge(&ar->tx_status[i]);
- }
-
- mutex_unlock(&ar->mutex);
-}
-
-static int ar9170_tx_prepare(struct ar9170 *ar, struct sk_buff *skb)
-{
- struct ieee80211_hdr *hdr;
- struct ar9170_tx_control *txc;
- struct ieee80211_tx_info *info;
- struct ieee80211_tx_rate *txrate;
- struct ar9170_tx_info *arinfo;
- unsigned int queue = skb_get_queue_mapping(skb);
- u16 keytype = 0;
- u16 len, icv = 0;
-
- BUILD_BUG_ON(sizeof(*arinfo) > sizeof(info->rate_driver_data));
-
- hdr = (void *)skb->data;
- info = IEEE80211_SKB_CB(skb);
- len = skb->len;
-
- txc = (void *)skb_push(skb, sizeof(*txc));
-
- if (info->control.hw_key) {
- icv = info->control.hw_key->icv_len;
-
- switch (info->control.hw_key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- case WLAN_CIPHER_SUITE_TKIP:
- keytype = AR9170_TX_MAC_ENCR_RC4;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- keytype = AR9170_TX_MAC_ENCR_AES;
- break;
- default:
- WARN_ON(1);
- goto err_out;
- }
- }
-
- /* Length */
- txc->length = cpu_to_le16(len + icv + 4);
-
- txc->mac_control = cpu_to_le16(AR9170_TX_MAC_HW_DURATION |
- AR9170_TX_MAC_BACKOFF);
- txc->mac_control |= cpu_to_le16(ar9170_qos_hwmap[queue] <<
- AR9170_TX_MAC_QOS_SHIFT);
- txc->mac_control |= cpu_to_le16(keytype);
- txc->phy_control = cpu_to_le32(0);
-
- if (info->flags & IEEE80211_TX_CTL_NO_ACK)
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_NO_ACK);
-
- txrate = &info->control.rates[0];
- if (txrate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_CTS);
- else if (txrate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_RTS);
-
- arinfo = (void *)info->rate_driver_data;
- arinfo->timeout = jiffies + msecs_to_jiffies(AR9170_QUEUE_TIMEOUT);
-
- if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
- (is_valid_ether_addr(ieee80211_get_DA(hdr)))) {
- /*
- * WARNING:
- * Putting the QoS queue bits into an unexplored territory is
- * certainly not elegant.
- *
- * In my defense: This idea provides a reasonable way to
- * smuggle valuable information to the tx_status callback.
- * Also, the idea behind this bit-abuse came straight from
- * the original driver code.
- */
-
- txc->phy_control |=
- cpu_to_le32(queue << AR9170_TX_PHY_QOS_SHIFT);
-
- txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_RATE_PROBE);
- }
-
- return 0;
-
-err_out:
- skb_pull(skb, sizeof(*txc));
- return -EINVAL;
-}
-
-static void ar9170_tx_prepare_phy(struct ar9170 *ar, struct sk_buff *skb)
-{
- struct ar9170_tx_control *txc;
- struct ieee80211_tx_info *info;
- struct ieee80211_rate *rate = NULL;
- struct ieee80211_tx_rate *txrate;
- u32 power, chains;
-
- txc = (void *) skb->data;
- info = IEEE80211_SKB_CB(skb);
- txrate = &info->control.rates[0];
-
- if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_GREENFIELD);
-
- if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_PREAMBLE);
-
- if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ);
- /* this works because 40 MHz is 2 and dup is 3 */
- if (txrate->flags & IEEE80211_TX_RC_DUP_DATA)
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ_DUP);
-
- if (txrate->flags & IEEE80211_TX_RC_SHORT_GI)
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_GI);
-
- if (txrate->flags & IEEE80211_TX_RC_MCS) {
- u32 r = txrate->idx;
- u8 *txpower;
-
- /* heavy clip control */
- txc->phy_control |= cpu_to_le32((r & 0x7) << 7);
-
- r <<= AR9170_TX_PHY_MCS_SHIFT;
- BUG_ON(r & ~AR9170_TX_PHY_MCS_MASK);
-
- txc->phy_control |= cpu_to_le32(r & AR9170_TX_PHY_MCS_MASK);
- txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_MOD_HT);
-
- if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
- if (info->band == IEEE80211_BAND_5GHZ)
- txpower = ar->power_5G_ht40;
- else
- txpower = ar->power_2G_ht40;
- } else {
- if (info->band == IEEE80211_BAND_5GHZ)
- txpower = ar->power_5G_ht20;
- else
- txpower = ar->power_2G_ht20;
- }
-
- power = txpower[(txrate->idx) & 7];
- } else {
- u8 *txpower;
- u32 mod;
- u32 phyrate;
- u8 idx = txrate->idx;
-
- if (info->band != IEEE80211_BAND_2GHZ) {
- idx += 4;
- txpower = ar->power_5G_leg;
- mod = AR9170_TX_PHY_MOD_OFDM;
- } else {
- if (idx < 4) {
- txpower = ar->power_2G_cck;
- mod = AR9170_TX_PHY_MOD_CCK;
- } else {
- mod = AR9170_TX_PHY_MOD_OFDM;
- txpower = ar->power_2G_ofdm;
- }
- }
-
- rate = &__ar9170_ratetable[idx];
-
- phyrate = rate->hw_value & 0xF;
- power = txpower[(rate->hw_value & 0x30) >> 4];
- phyrate <<= AR9170_TX_PHY_MCS_SHIFT;
-
- txc->phy_control |= cpu_to_le32(mod);
- txc->phy_control |= cpu_to_le32(phyrate);
- }
-
- power <<= AR9170_TX_PHY_TX_PWR_SHIFT;
- power &= AR9170_TX_PHY_TX_PWR_MASK;
- txc->phy_control |= cpu_to_le32(power);
-
- /* set TX chains */
- if (ar->eeprom.tx_mask == 1) {
- chains = AR9170_TX_PHY_TXCHAIN_1;
- } else {
- chains = AR9170_TX_PHY_TXCHAIN_2;
-
- /* >= 36M legacy OFDM - use only one chain */
- if (rate && rate->bitrate >= 360)
- chains = AR9170_TX_PHY_TXCHAIN_1;
- }
- txc->phy_control |= cpu_to_le32(chains << AR9170_TX_PHY_TXCHAIN_SHIFT);
-}
-
-static void ar9170_tx(struct ar9170 *ar)
-{
- struct sk_buff *skb;
- unsigned long flags;
- struct ieee80211_tx_info *info;
- struct ar9170_tx_info *arinfo;
- unsigned int i, frames, frames_failed, remaining_space;
- int err;
- bool schedule_garbagecollector = false;
-
- BUILD_BUG_ON(sizeof(*arinfo) > sizeof(info->rate_driver_data));
-
- if (unlikely(!IS_STARTED(ar)))
- return ;
-
- remaining_space = AR9170_TX_MAX_PENDING;
-
- for (i = 0; i < __AR9170_NUM_TXQ; i++) {
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- frames = min(ar->tx_stats[i].limit - ar->tx_stats[i].len,
- skb_queue_len(&ar->tx_pending[i]));
-
- if (remaining_space < frames) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "tx quota reached queue:%d, "
- "remaining slots:%d, needed:%d\n",
- i, remaining_space, frames);
-#endif /* AR9170_QUEUE_DEBUG */
- frames = remaining_space;
- }
-
- ar->tx_stats[i].len += frames;
- ar->tx_stats[i].count += frames;
- if (ar->tx_stats[i].len >= ar->tx_stats[i].limit) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy, "queue %d full\n", i);
- wiphy_debug(ar->hw->wiphy, "stuck frames: ===>\n");
- ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
- ar9170_dump_txqueue(ar, &ar->tx_status[i]);
-#endif /* AR9170_QUEUE_DEBUG */
-
-#ifdef AR9170_QUEUE_STOP_DEBUG
- wiphy_debug(ar->hw->wiphy, "stop queue %d\n", i);
- __ar9170_dump_txstats(ar);
-#endif /* AR9170_QUEUE_STOP_DEBUG */
- ieee80211_stop_queue(ar->hw, i);
- }
-
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
- if (!frames)
- continue;
-
- frames_failed = 0;
- while (frames) {
- skb = skb_dequeue(&ar->tx_pending[i]);
- if (unlikely(!skb)) {
- frames_failed += frames;
- frames = 0;
- break;
- }
-
- info = IEEE80211_SKB_CB(skb);
- arinfo = (void *) info->rate_driver_data;
-
- /* TODO: cancel stuck frames */
- arinfo->timeout = jiffies +
- msecs_to_jiffies(AR9170_TX_TIMEOUT);
-
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy, "send frame q:%d =>\n", i);
- ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
-
- err = ar->tx(ar, skb);
- if (unlikely(err)) {
- frames_failed++;
- dev_kfree_skb_any(skb);
- } else {
- remaining_space--;
- schedule_garbagecollector = true;
- }
-
- frames--;
- }
-
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "ar9170_tx report for queue %d\n", i);
-
- wiphy_debug(ar->hw->wiphy,
- "unprocessed pending frames left:\n");
- ar9170_dump_txqueue(ar, &ar->tx_pending[i]);
-#endif /* AR9170_QUEUE_DEBUG */
-
- if (unlikely(frames_failed)) {
-#ifdef AR9170_QUEUE_DEBUG
- wiphy_debug(ar->hw->wiphy,
- "frames failed %d =>\n", frames_failed);
-#endif /* AR9170_QUEUE_DEBUG */
-
- spin_lock_irqsave(&ar->tx_stats_lock, flags);
- ar->tx_stats[i].len -= frames_failed;
- ar->tx_stats[i].count -= frames_failed;
-#ifdef AR9170_QUEUE_STOP_DEBUG
- wiphy_debug(ar->hw->wiphy, "wake queue %d\n", i);
- __ar9170_dump_txstats(ar);
-#endif /* AR9170_QUEUE_STOP_DEBUG */
- ieee80211_wake_queue(ar->hw, i);
- spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
- }
- }
-
- if (!schedule_garbagecollector)
- return;
-
- ieee80211_queue_delayed_work(ar->hw,
- &ar->tx_janitor,
- msecs_to_jiffies(AR9170_JANITOR_DELAY));
-}
-
-void ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
- struct ar9170 *ar = hw->priv;
- struct ieee80211_tx_info *info;
- unsigned int queue;
-
- if (unlikely(!IS_STARTED(ar)))
- goto err_free;
-
- if (unlikely(ar9170_tx_prepare(ar, skb)))
- goto err_free;
-
- queue = skb_get_queue_mapping(skb);
- info = IEEE80211_SKB_CB(skb);
- ar9170_tx_prepare_phy(ar, skb);
- skb_queue_tail(&ar->tx_pending[queue], skb);
-
- ar9170_tx(ar);
- return;
-
-err_free:
- dev_kfree_skb_any(skb);
-}
-
-static int ar9170_op_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct ar9170 *ar = hw->priv;
- struct ath_common *common = &ar->common;
- int err = 0;
-
- mutex_lock(&ar->mutex);
-
- if (ar->vif) {
- err = -EBUSY;
- goto unlock;
- }
-
- ar->vif = vif;
- memcpy(common->macaddr, vif->addr, ETH_ALEN);
-
- if (modparam_nohwcrypt || (ar->vif->type != NL80211_IFTYPE_STATION)) {
- ar->rx_software_decryption = true;
- ar->disable_offload = true;
- }
-
- ar->cur_filter = 0;
- err = ar9170_update_frame_filter(ar, AR9170_MAC_REG_FTF_DEFAULTS);
- if (err)
- goto unlock;
-
- err = ar9170_set_operating_mode(ar);
-
-unlock:
- mutex_unlock(&ar->mutex);
- return err;
-}
-
-static void ar9170_op_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct ar9170 *ar = hw->priv;
-
- mutex_lock(&ar->mutex);
- ar->vif = NULL;
- ar9170_update_frame_filter(ar, 0);
- ar9170_set_beacon_timers(ar);
- dev_kfree_skb(ar->beacon);
- ar->beacon = NULL;
- ar->sniffer_enabled = false;
- ar->rx_software_decryption = false;
- ar9170_set_operating_mode(ar);
- mutex_unlock(&ar->mutex);
-}
-
-static int ar9170_op_config(struct ieee80211_hw *hw, u32 changed)
-{
- struct ar9170 *ar = hw->priv;
- int err = 0;
-
- mutex_lock(&ar->mutex);
-
- if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
- /* TODO */
- err = 0;
- }
-
- if (changed & IEEE80211_CONF_CHANGE_PS) {
- /* TODO */
- err = 0;
- }
-
- if (changed & IEEE80211_CONF_CHANGE_POWER) {
- /* TODO */
- err = 0;
- }
-
- if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
- /*
- * is it long_frame_max_tx_count or short_frame_max_tx_count?
- */
-
- err = ar9170_set_hwretry_limit(ar,
- ar->hw->conf.long_frame_max_tx_count);
- if (err)
- goto out;
- }
-
- if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
-
- /* adjust slot time for 5 GHz */
- err = ar9170_set_slot_time(ar);
- if (err)
- goto out;
-
- err = ar9170_set_dyn_sifs_ack(ar);
- if (err)
- goto out;
-
- err = ar9170_set_channel(ar, hw->conf.channel,
- AR9170_RFI_NONE,
- nl80211_to_ar9170(hw->conf.channel_type));
- if (err)
- goto out;
- }
-
-out:
- mutex_unlock(&ar->mutex);
- return err;
-}
-
-static u64 ar9170_op_prepare_multicast(struct ieee80211_hw *hw,
- struct netdev_hw_addr_list *mc_list)
-{
- u64 mchash;
- struct netdev_hw_addr *ha;
-
- /* always get broadcast frames */
- mchash = 1ULL << (0xff >> 2);
-
- netdev_hw_addr_list_for_each(ha, mc_list)
- mchash |= 1ULL << (ha->addr[5] >> 2);
-
- return mchash;
-}
-
-static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
- unsigned int changed_flags,
- unsigned int *new_flags,
- u64 multicast)
-{
- struct ar9170 *ar = hw->priv;
-
- if (unlikely(!IS_ACCEPTING_CMD(ar)))
- return ;
-
- mutex_lock(&ar->mutex);
-
- /* mask supported flags */
- *new_flags &= FIF_ALLMULTI | FIF_CONTROL | FIF_BCN_PRBRESP_PROMISC |
- FIF_PROMISC_IN_BSS | FIF_FCSFAIL | FIF_PLCPFAIL;
- ar->filter_state = *new_flags;
- /*
- * We can support more by setting the sniffer bit and
- * then checking the error flags, later.
- */
-
- if (changed_flags & FIF_ALLMULTI && *new_flags & FIF_ALLMULTI)
- multicast = ~0ULL;
-
- if (multicast != ar->cur_mc_hash)
- ar9170_update_multicast(ar, multicast);
-
- if (changed_flags & FIF_CONTROL) {
- u32 filter = AR9170_MAC_REG_FTF_PSPOLL |
- AR9170_MAC_REG_FTF_RTS |
- AR9170_MAC_REG_FTF_CTS |
- AR9170_MAC_REG_FTF_ACK |
- AR9170_MAC_REG_FTF_CFE |
- AR9170_MAC_REG_FTF_CFE_ACK;
-
- if (*new_flags & FIF_CONTROL)
- filter |= ar->cur_filter;
- else
- filter &= (~ar->cur_filter);
-
- ar9170_update_frame_filter(ar, filter);
- }
-
- if (changed_flags & FIF_PROMISC_IN_BSS) {
- ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0;
- ar9170_set_operating_mode(ar);
- }
-
- mutex_unlock(&ar->mutex);
-}
-
-
-static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changed)
-{
- struct ar9170 *ar = hw->priv;
- struct ath_common *common = &ar->common;
- int err = 0;
-
- mutex_lock(&ar->mutex);
-
- if (changed & BSS_CHANGED_BSSID) {
- memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
- err = ar9170_set_operating_mode(ar);
- if (err)
- goto out;
- }
-
- if (changed & BSS_CHANGED_BEACON_ENABLED)
- ar->enable_beacon = bss_conf->enable_beacon;
-
- if (changed & BSS_CHANGED_BEACON) {
- err = ar9170_update_beacon(ar);
- if (err)
- goto out;
- }
-
- if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON |
- BSS_CHANGED_BEACON_INT)) {
- err = ar9170_set_beacon_timers(ar);
- if (err)
- goto out;
- }
-
- if (changed & BSS_CHANGED_ASSOC) {
-#ifndef CONFIG_AR9170_LEDS
- /* enable assoc LED. */
- err = ar9170_set_leds_state(ar, bss_conf->assoc ? 2 : 0);
-#endif /* CONFIG_AR9170_LEDS */
- }
-
- if (changed & BSS_CHANGED_HT) {
- /* TODO */
- err = 0;
- }
-
- if (changed & BSS_CHANGED_ERP_SLOT) {
- err = ar9170_set_slot_time(ar);
- if (err)
- goto out;
- }
-
- if (changed & BSS_CHANGED_BASIC_RATES) {
- err = ar9170_set_basic_rates(ar);
- if (err)
- goto out;
- }
-
-out:
- mutex_unlock(&ar->mutex);
-}
-
-static u64 ar9170_op_get_tsf(struct ieee80211_hw *hw)
-{
- struct ar9170 *ar = hw->priv;
- int err;
- u64 tsf;
-#define NR 3
- static const u32 addr[NR] = { AR9170_MAC_REG_TSF_H,
- AR9170_MAC_REG_TSF_L,
- AR9170_MAC_REG_TSF_H };
- u32 val[NR];
- int loops = 0;
-
- mutex_lock(&ar->mutex);
-
- while (loops++ < 10) {
- err = ar9170_read_mreg(ar, NR, addr, val);
- if (err || val[0] == val[2])
- break;
- }
-
- mutex_unlock(&ar->mutex);
-
- if (WARN_ON(err))
- return 0;
- tsf = val[0];
- tsf = (tsf << 32) | val[1];
- return tsf;
-#undef NR
-}
-
-static int ar9170_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
- struct ieee80211_vif *vif, struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
-{
- struct ar9170 *ar = hw->priv;
- int err = 0, i;
- u8 ktype;
-
- if ((!ar->vif) || (ar->disable_offload))
- return -EOPNOTSUPP;
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- ktype = AR9170_ENC_ALG_WEP64;
- break;
- case WLAN_CIPHER_SUITE_WEP104:
- ktype = AR9170_ENC_ALG_WEP128;
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- ktype = AR9170_ENC_ALG_TKIP;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- ktype = AR9170_ENC_ALG_AESCCMP;
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- mutex_lock(&ar->mutex);
- if (cmd == SET_KEY) {
- if (unlikely(!IS_STARTED(ar))) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- /* group keys need all-zeroes address */
- if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
- sta = NULL;
-
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
- for (i = 0; i < 64; i++)
- if (!(ar->usedkeys & BIT(i)))
- break;
- if (i == 64) {
- ar->rx_software_decryption = true;
- ar9170_set_operating_mode(ar);
- err = -ENOSPC;
- goto out;
- }
- } else {
- i = 64 + key->keyidx;
- }
-
- key->hw_key_idx = i;
-
- err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL, ktype, 0,
- key->key, min_t(u8, 16, key->keylen));
- if (err)
- goto out;
-
- if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
- err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL,
- ktype, 1, key->key + 16, 16);
- if (err)
- goto out;
-
- /*
- * hardware is not capable generating the MMIC
- * for fragmented frames!
- */
- key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
- }
-
- if (i < 64)
- ar->usedkeys |= BIT(i);
-
- key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
- } else {
- if (unlikely(!IS_STARTED(ar))) {
- /* The device is gone... together with the key ;-) */
- err = 0;
- goto out;
- }
-
- err = ar9170_disable_key(ar, key->hw_key_idx);
- if (err)
- goto out;
-
- if (key->hw_key_idx < 64) {
- ar->usedkeys &= ~BIT(key->hw_key_idx);
- } else {
- err = ar9170_upload_key(ar, key->hw_key_idx, NULL,
- AR9170_ENC_ALG_NONE, 0,
- NULL, 0);
- if (err)
- goto out;
-
- if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
- err = ar9170_upload_key(ar, key->hw_key_idx,
- NULL,
- AR9170_ENC_ALG_NONE, 1,
- NULL, 0);
- if (err)
- goto out;
- }
-
- }
- }
-
- ar9170_regwrite_begin(ar);
- ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_L, ar->usedkeys);
- ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_H, ar->usedkeys >> 32);
- ar9170_regwrite_finish();
- err = ar9170_regwrite_result();
-
-out:
- mutex_unlock(&ar->mutex);
-
- return err;
-}
-
-static int ar9170_get_stats(struct ieee80211_hw *hw,
- struct ieee80211_low_level_stats *stats)
-{
- struct ar9170 *ar = hw->priv;
- u32 val;
- int err;
-
- mutex_lock(&ar->mutex);
- err = ar9170_read_reg(ar, AR9170_MAC_REG_TX_RETRY, &val);
- ar->stats.dot11ACKFailureCount += val;
-
- memcpy(stats, &ar->stats, sizeof(*stats));
- mutex_unlock(&ar->mutex);
-
- return 0;
-}
-
-static int ar9170_get_survey(struct ieee80211_hw *hw, int idx,
- struct survey_info *survey)
-{
- struct ar9170 *ar = hw->priv;
- struct ieee80211_conf *conf = &hw->conf;
-
- if (idx != 0)
- return -ENOENT;
-
- /* TODO: update noise value, e.g. call ar9170_set_channel */
-
- survey->channel = conf->channel;
- survey->filled = SURVEY_INFO_NOISE_DBM;
- survey->noise = ar->noise[0];
-
- return 0;
-}
-
-static int ar9170_conf_tx(struct ieee80211_hw *hw, u16 queue,
- const struct ieee80211_tx_queue_params *param)
-{
- struct ar9170 *ar = hw->priv;
- int ret;
-
- mutex_lock(&ar->mutex);
- if (queue < __AR9170_NUM_TXQ) {
- memcpy(&ar->edcf[ar9170_qos_hwmap[queue]],
- param, sizeof(*param));
-
- ret = ar9170_set_qos(ar);
- } else {
- ret = -EINVAL;
- }
-
- mutex_unlock(&ar->mutex);
- return ret;
-}
-
-static int ar9170_ampdu_action(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- enum ieee80211_ampdu_mlme_action action,
- struct ieee80211_sta *sta, u16 tid, u16 *ssn,
- u8 buf_size)
-{
- switch (action) {
- case IEEE80211_AMPDU_RX_START:
- case IEEE80211_AMPDU_RX_STOP:
- /* Handled by firmware */
- break;
-
- default:
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-static const struct ieee80211_ops ar9170_ops = {
- .start = ar9170_op_start,
- .stop = ar9170_op_stop,
- .tx = ar9170_op_tx,
- .add_interface = ar9170_op_add_interface,
- .remove_interface = ar9170_op_remove_interface,
- .config = ar9170_op_config,
- .prepare_multicast = ar9170_op_prepare_multicast,
- .configure_filter = ar9170_op_configure_filter,
- .conf_tx = ar9170_conf_tx,
- .bss_info_changed = ar9170_op_bss_info_changed,
- .get_tsf = ar9170_op_get_tsf,
- .set_key = ar9170_set_key,
- .get_stats = ar9170_get_stats,
- .get_survey = ar9170_get_survey,
- .ampdu_action = ar9170_ampdu_action,
-};
-
-void *ar9170_alloc(size_t priv_size)
-{
- struct ieee80211_hw *hw;
- struct ar9170 *ar;
- struct sk_buff *skb;
- int i;
-
- /*
- * this buffer is used for rx stream reconstruction.
- * Under heavy load this device (or the transport layer?)
- * tends to split the streams into separate rx descriptors.
- */
-
- skb = __dev_alloc_skb(AR9170_RX_STREAM_MAX_SIZE, GFP_KERNEL);
- if (!skb)
- goto err_nomem;
-
- hw = ieee80211_alloc_hw(priv_size, &ar9170_ops);
- if (!hw)
- goto err_nomem;
-
- ar = hw->priv;
- ar->hw = hw;
- ar->rx_failover = skb;
-
- mutex_init(&ar->mutex);
- spin_lock_init(&ar->cmdlock);
- spin_lock_init(&ar->tx_stats_lock);
- for (i = 0; i < __AR9170_NUM_TXQ; i++) {
- skb_queue_head_init(&ar->tx_status[i]);
- skb_queue_head_init(&ar->tx_pending[i]);
- }
- ar9170_rx_reset_rx_mpdu(ar);
- INIT_WORK(&ar->beacon_work, ar9170_new_beacon);
- INIT_DELAYED_WORK(&ar->tx_janitor, ar9170_tx_janitor);
-
- /* all hw supports 2.4 GHz, so set channel to 1 by default */
- ar->channel = &ar9170_2ghz_chantable[0];
-
- /* first part of wiphy init */
- ar->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
- BIT(NL80211_IFTYPE_WDS) |
- BIT(NL80211_IFTYPE_ADHOC);
- ar->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS |
- IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
- IEEE80211_HW_SIGNAL_DBM;
-
- ar->hw->queues = __AR9170_NUM_TXQ;
- ar->hw->extra_tx_headroom = 8;
-
- ar->hw->max_rates = 1;
- ar->hw->max_rate_tries = 3;
-
- for (i = 0; i < ARRAY_SIZE(ar->noise); i++)
- ar->noise[i] = -95; /* ATH_DEFAULT_NOISE_FLOOR */
-
- return ar;
-
-err_nomem:
- kfree_skb(skb);
- return ERR_PTR(-ENOMEM);
-}
-
-static int ar9170_read_eeprom(struct ar9170 *ar)
-{
-#define RW 8 /* number of words to read at once */
-#define RB (sizeof(u32) * RW)
- struct ath_regulatory *regulatory = &ar->common.regulatory;
- u8 *eeprom = (void *)&ar->eeprom;
- u8 *addr = ar->eeprom.mac_address;
- __le32 offsets[RW];
- unsigned int rx_streams, tx_streams, tx_params = 0;
- int i, j, err, bands = 0;
-
- BUILD_BUG_ON(sizeof(ar->eeprom) & 3);
-
- BUILD_BUG_ON(RB > AR9170_MAX_CMD_LEN - 4);
-#ifndef __CHECKER__
- /* don't want to handle trailing remains */
- BUILD_BUG_ON(sizeof(ar->eeprom) % RB);
-#endif
-
- for (i = 0; i < sizeof(ar->eeprom)/RB; i++) {
- for (j = 0; j < RW; j++)
- offsets[j] = cpu_to_le32(AR9170_EEPROM_START +
- RB * i + 4 * j);
-
- err = ar->exec_cmd(ar, AR9170_CMD_RREG,
- RB, (u8 *) &offsets,
- RB, eeprom + RB * i);
- if (err)
- return err;
- }
-
-#undef RW
-#undef RB
-
- if (ar->eeprom.length == cpu_to_le16(0xFFFF))
- return -ENODATA;
-
- if (ar->eeprom.operating_flags & AR9170_OPFLAG_2GHZ) {
- ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &ar9170_band_2GHz;
- bands++;
- }
- if (ar->eeprom.operating_flags & AR9170_OPFLAG_5GHZ) {
- ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &ar9170_band_5GHz;
- bands++;
- }
-
- rx_streams = hweight8(ar->eeprom.rx_mask);
- tx_streams = hweight8(ar->eeprom.tx_mask);
-
- if (rx_streams != tx_streams)
- tx_params = IEEE80211_HT_MCS_TX_RX_DIFF;
-
- if (tx_streams >= 1 && tx_streams <= IEEE80211_HT_MCS_TX_MAX_STREAMS)
- tx_params = (tx_streams - 1) <<
- IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
-
- ar9170_band_2GHz.ht_cap.mcs.tx_params |= tx_params;
- ar9170_band_5GHz.ht_cap.mcs.tx_params |= tx_params;
-
- /*
- * I measured this, a bandswitch takes roughly
- * 135 ms and a frequency switch about 80.
- *
- * FIXME: measure these values again once EEPROM settings
- * are used, that will influence them!
- */
- if (bands == 2)
- ar->hw->channel_change_time = 135 * 1000;
- else
- ar->hw->channel_change_time = 80 * 1000;
-
- regulatory->current_rd = le16_to_cpu(ar->eeprom.reg_domain[0]);
- regulatory->current_rd_ext = le16_to_cpu(ar->eeprom.reg_domain[1]);
-
- /* second part of wiphy init */
- SET_IEEE80211_PERM_ADDR(ar->hw, addr);
-
- return bands ? 0 : -EINVAL;
-}
-
-static int ar9170_reg_notifier(struct wiphy *wiphy,
- struct regulatory_request *request)
-{
- struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
- struct ar9170 *ar = hw->priv;
-
- return ath_reg_notifier_apply(wiphy, request, &ar->common.regulatory);
-}
-
-int ar9170_register(struct ar9170 *ar, struct device *pdev)
-{
- struct ath_regulatory *regulatory = &ar->common.regulatory;
- int err;
-
- /* try to read EEPROM, init MAC addr */
- err = ar9170_read_eeprom(ar);
- if (err)
- goto err_out;
-
- err = ath_regd_init(regulatory, ar->hw->wiphy,
- ar9170_reg_notifier);
- if (err)
- goto err_out;
-
- err = ieee80211_register_hw(ar->hw);
- if (err)
- goto err_out;
-
- if (!ath_is_world_regd(regulatory))
- regulatory_hint(ar->hw->wiphy, regulatory->alpha2);
-
- err = ar9170_init_leds(ar);
- if (err)
- goto err_unreg;
-
-#ifdef CONFIG_AR9170_LEDS
- err = ar9170_register_leds(ar);
- if (err)
- goto err_unreg;
-#endif /* CONFIG_AR9170_LEDS */
-
- dev_info(pdev, "Atheros AR9170 is registered as '%s'\n",
- wiphy_name(ar->hw->wiphy));
-
- ar->registered = true;
- return 0;
-
-err_unreg:
- ieee80211_unregister_hw(ar->hw);
-
-err_out:
- return err;
-}
-
-void ar9170_unregister(struct ar9170 *ar)
-{
- if (ar->registered) {
-#ifdef CONFIG_AR9170_LEDS
- ar9170_unregister_leds(ar);
-#endif /* CONFIG_AR9170_LEDS */
-
- ieee80211_unregister_hw(ar->hw);
- }
-
- kfree_skb(ar->rx_failover);
- mutex_destroy(&ar->mutex);
-}