Adding upstream version 20240610.upstream/20240610upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 1211 deletions

diff --git a/carl9170fw/carlfw/src/wlan.c b/carl9170fw/carlfw/src/wlan.c
deleted file mode 100644
index d3328d6..0000000
--- a/carl9170fw/carlfw/src/wlan.c
+++ /dev/null
@@ -1,1211 +0,0 @@
-/*
- * carl9170 firmware - used by the ar9170 wireless device
- *
- * Interface to the WLAN part of the chip
- *
- * Copyright (c) 2000-2005 ZyDAS Technology Corporation
- * Copyright (c) 2007-2009 Atheros Communications, Inc.
- * Copyright	2009	Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009-2011	Christian Lamparter <chunkeey@googlemail.com>
- *
- * 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; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "carl9170.h"
-#include "shared/phy.h"
-#include "hostif.h"
-#include "timer.h"
-#include "wl.h"
-#include "printf.h"
-#include "rf.h"
-#include "linux/ieee80211.h"
-#include "wol.h"
-
-static void wlan_txunstuck(unsigned int queue)
-{
-	set_wlan_txq_dma_addr(queue, ((uint32_t) fw.wlan.tx_queue[queue].head) | 1);
-}
-
-#ifdef CONFIG_CARL9170FW_DMA_QUEUE_BUMP
-static void wlan_txupdate(unsigned int queue)
-{
-	set_wlan_txq_dma_addr(queue, ((uint32_t) fw.wlan.tx_queue[queue].head));
-}
-
-static void wlan_dma_bump(unsigned int qidx)
-{
-	unsigned int offset = qidx;
-	uint32_t status, trigger;
-
-	status = get(AR9170_MAC_REG_DMA_STATUS) >> 12;
-	trigger = get(AR9170_MAC_REG_DMA_TRIGGER) >> 12;
-
-	while (offset != 0) {
-		status >>= 4;
-		trigger >>= 4;
-		offset--;
-	}
-
-	status &= 0xf;
-	trigger &= 0xf;
-
-	if ((trigger == 0xa) && (status == 0x8)) {
-		DBG("UNSTUCK");
-		wlan_txunstuck(qidx);
-	} else {
-		DBG("UPDATE");
-		wlan_txupdate(qidx);
-	}
-}
-#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
-
-#ifdef CONFIG_CARL9170FW_DEBUG
-static void wlan_dump_queue(unsigned int qidx)
-{
-
-	struct dma_desc *desc;
-	struct carl9170_tx_superframe *super;
-	int entries = 0;
-
-	__for_each_desc(desc, &fw.wlan.tx_queue[qidx]) {
-		super = get_super(desc);
-		DBG("%d: %p s:%x c:%x tl:%x ds:%x n:%p l:%p ", entries, desc,
-		    desc->status, desc->ctrl, desc->totalLen,
-		    desc->dataSize, desc->nextAddr, desc->lastAddr);
-
-		DBG("c:%x tr:%d ri:%d l:%x m:%x p:%x fc:%x",
-		    super->s.cookie, super->s.cnt, super->s.rix,
-		    super->f.hdr.length, super->f.hdr.mac.set,
-		    (unsigned int) le32_to_cpu(super->f.hdr.phy.set),
-		    super->f.data.i3e.frame_control);
-
-		entries++;
-	}
-
-	desc = get_wlan_txq_addr(qidx);
-
-	DBG("Queue: %d: te:%d td:%d h:%p c:%p t:%p",
-	    qidx, entries, queue_len(&fw.wlan.tx_queue[qidx]),
-	    fw.wlan.tx_queue[qidx].head,
-	    desc, fw.wlan.tx_queue[qidx].terminator);
-
-	DBG("HW: t:%x s:%x ac:%x c:%x",
-	    (unsigned int) get(AR9170_MAC_REG_DMA_TRIGGER),
-	    (unsigned int) get(AR9170_MAC_REG_DMA_STATUS),
-	    (unsigned int) get(AR9170_MAC_REG_AMPDU_COUNT),
-	    (unsigned int) get(AR9170_MAC_REG_DMA_TXQX_ADDR_CURR));
-}
-#endif /* CONFIG_CARL9170FW_DEBUG */
-
-static void wlan_send_buffered_tx_status(void)
-{
-	unsigned int len;
-
-	while (fw.wlan.tx_status_pending) {
-		len = min((unsigned int)fw.wlan.tx_status_pending,
-			  CARL9170_RSP_TX_STATUS_NUM);
-		len = min(len, CARL9170_TX_STATUS_NUM -	fw.wlan.tx_status_head_idx);
-
-		/*
-		 * rather than memcpy each individual request into a large buffer,
-		 * we _splice_ them all together.
-		 *
-		 * The only downside is however that we have to be careful around
-		 * the edges of the tx_status_cache.
-		 *
-		 * Note:
-		 * Each tx_status is about 2 bytes. However every command package
-		 * must have a size which is a multiple of 4.
-		 */
-
-		send_cmd_to_host((len * sizeof(struct carl9170_tx_status) + 3) & ~3,
-				 CARL9170_RSP_TXCOMP, len, (void *)
-				 &fw.wlan.tx_status_cache[fw.wlan.tx_status_head_idx]);
-
-		fw.wlan.tx_status_pending -= len;
-		fw.wlan.tx_status_head_idx += len;
-		fw.wlan.tx_status_head_idx %= CARL9170_TX_STATUS_NUM;
-	}
-}
-
-static struct carl9170_tx_status *wlan_get_tx_status_buffer(void)
-{
-	struct carl9170_tx_status *tmp;
-
-	tmp = &fw.wlan.tx_status_cache[fw.wlan.tx_status_tail_idx++];
-	fw.wlan.tx_status_tail_idx %= CARL9170_TX_STATUS_NUM;
-
-	if (fw.wlan.tx_status_pending == CARL9170_TX_STATUS_NUM)
-		wlan_send_buffered_tx_status();
-
-	fw.wlan.tx_status_pending++;
-
-	return tmp;
-}
-
-/* generate _aggregated_ tx_status for the host */
-void wlan_tx_complete(struct carl9170_tx_superframe *super,
-		      bool txs)
-{
-	struct carl9170_tx_status *status;
-
-	status = wlan_get_tx_status_buffer();
-
-	/*
-	 * The *unique* cookie and AC_ID is used by the driver for
-	 * frame lookup.
-	 */
-	status->cookie = super->s.cookie;
-	status->queue = super->s.queue;
-	super->s.cookie = 0;
-
-	/*
-	 * This field holds the number of tries of the rate in
-	 * the rate index field (rix).
-	 */
-	status->rix = super->s.rix;
-	status->tries = super->s.cnt;
-	status->success = (txs) ? 1 : 0;
-}
-
-static bool wlan_tx_consume_retry(struct carl9170_tx_superframe *super)
-{
-	/* check if this was the last possible retry with this rate */
-	if (unlikely(super->s.cnt >= super->s.ri[super->s.rix].tries)) {
-		/* end of the road - indicate tx failure */
-		if (unlikely(super->s.rix == CARL9170_TX_MAX_RETRY_RATES))
-			return false;
-
-		/* check if there are alternative rates available */
-		if (!super->s.rr[super->s.rix].set)
-			return false;
-
-		/* try next retry rate */
-		super->f.hdr.phy.set = super->s.rr[super->s.rix].set;
-
-		/* finally - mark the old rate as USED */
-		super->s.rix++;
-
-		/* update MAC flags */
-		super->f.hdr.mac.erp_prot = super->s.ri[super->s.rix].erp_prot;
-		super->f.hdr.mac.ampdu = super->s.ri[super->s.rix].ampdu;
-
-		/* reinitialize try counter */
-		super->s.cnt = 1;
-	} else {
-		/* just increase retry counter */
-		super->s.cnt++;
-	}
-
-	return true;
-}
-
-static inline u16 get_tid(struct ieee80211_hdr *hdr)
-{
-	return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
-}
-
-/* This function will only work on uint32_t-aligned pointers! */
-static bool same_hdr(const void *_d0, const void *_d1)
-{
-	const uint32_t *d0 = _d0;
-	const uint32_t *d1 = _d1;
-
-	/* BUG_ON((unsigned long)d0 & 3 || (unsigned long)d1 & 3)) */
-	return !((d0[0] ^ d1[0]) |			/* FC + DU */
-		 (d0[1] ^ d1[1]) |			/* addr1 */
-		 (d0[2] ^ d1[2]) | (d0[3] ^ d1[3]) |	/* addr2 + addr3 */
-		 (d0[4] ^ d1[4]));			/* addr3 */
-}
-
-static inline bool same_aggr(struct ieee80211_hdr *a, struct ieee80211_hdr *b)
-{
-	return (get_tid(a) == get_tid(b)) || same_hdr(a, b);
-}
-
-static void wlan_tx_ampdu_reset(unsigned int qidx)
-{
-	fw.wlan.ampdu_prev[qidx] = NULL;
-}
-
-static void wlan_tx_ampdu_end(unsigned int qidx)
-{
-	struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx];
-
-	if (ht_prev)
-		ht_prev->f.hdr.mac.ba_end = 1;
-
-	wlan_tx_ampdu_reset(qidx);
-}
-
-static void wlan_tx_ampdu(struct carl9170_tx_superframe *super)
-{
-	unsigned int qidx = super->s.queue;
-	struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx];
-
-	if (super->f.hdr.mac.ampdu) {
-		if (ht_prev &&
-		    !same_aggr(&super->f.data.i3e, &ht_prev->f.data.i3e))
-			ht_prev->f.hdr.mac.ba_end = 1;
-		else
-			super->f.hdr.mac.ba_end = 0;
-
-		fw.wlan.ampdu_prev[qidx] = super;
-	} else {
-		wlan_tx_ampdu_end(qidx);
-	}
-}
-
-/* for all tries */
-static void __wlan_tx(struct dma_desc *desc)
-{
-	struct carl9170_tx_superframe *super = get_super(desc);
-
-	if (unlikely(super->s.fill_in_tsf)) {
-		struct ieee80211_mgmt *mgmt = (void *) &super->f.data.i3e;
-		uint32_t *tsf = (uint32_t *) &mgmt->u.probe_resp.timestamp;
-
-		/*
-		 * Truth be told: this is a hack.
-		 *
-		 * The *real* TSF is definitely going to be higher/older.
-		 * But this hardware emulation code is head and shoulders
-		 * above anything a driver can possibly do.
-		 *
-		 * (even, if it's got an accurate atomic clock source).
-		 */
-
-		read_tsf(tsf);
-	}
-
-	wlan_tx_ampdu(super);
-
-#ifdef CONFIG_CARL9170FW_DEBUG
-	BUG_ON(fw.phy.psm.state != CARL9170_PSM_WAKE);
-#endif /* CONFIG_CARL9170FW_DEBUG */
-
-	/* insert desc into the right queue */
-	dma_put(&fw.wlan.tx_queue[super->s.queue], desc);
-}
-
-static void wlan_assign_seq(struct ieee80211_hdr *hdr, unsigned int vif)
-{
-	hdr->seq_ctrl &= cpu_to_le16(~IEEE80211_SCTL_SEQ);
-	hdr->seq_ctrl |= cpu_to_le16(fw.wlan.sequence[vif]);
-
-	if (ieee80211_is_first_frag(hdr->seq_ctrl))
-		fw.wlan.sequence[vif] += 0x10;
-}
-
-/* prepares frame for the first transmission */
-static void _wlan_tx(struct dma_desc *desc)
-{
-	struct carl9170_tx_superframe *super = get_super(desc);
-
-	if (unlikely(super->s.assign_seq))
-		wlan_assign_seq(&super->f.data.i3e, super->s.vif_id);
-
-	if (unlikely(super->s.ampdu_commit_density)) {
-		set(AR9170_MAC_REG_AMPDU_DENSITY,
-		    MOD_VAL(AR9170_MAC_AMPDU_DENSITY,
-			    get(AR9170_MAC_REG_AMPDU_DENSITY),
-			    super->s.ampdu_density));
-	}
-
-	if (unlikely(super->s.ampdu_commit_factor)) {
-		set(AR9170_MAC_REG_AMPDU_FACTOR,
-		    MOD_VAL(AR9170_MAC_AMPDU_FACTOR,
-			    get(AR9170_MAC_REG_AMPDU_FACTOR),
-			    8 << super->s.ampdu_factor));
-	}
-}
-
-/* propagate transmission status back to the driver */
-static bool wlan_tx_status(struct dma_queue *queue,
-			   struct dma_desc *desc)
-{
-	struct carl9170_tx_superframe *super = get_super(desc);
-	unsigned int qidx = super->s.queue;
-	bool txfail = false, success;
-
-	success = true;
-
-	/* update hangcheck */
-	fw.wlan.last_super_num[qidx] = 0;
-
-	/*
-	 * Note:
-	 * There could be a corner case when the TXFAIL is set
-	 * even though the frame was properly ACKed by the peer:
-	 *   a BlockAckReq with the immediate policy will cause
-	 *   the receiving peer to produce a BlockACK unfortunately
-	 *   the MAC in this chip seems to be expecting a legacy
-	 *   ACK and marks the BAR as failed!
-	 */
-
-	if (!!(desc->ctrl & AR9170_CTRL_FAIL)) {
-		txfail = !!(desc->ctrl & AR9170_CTRL_TXFAIL);
-
-		/* reset retry indicator flags */
-		desc->ctrl &= ~(AR9170_CTRL_TXFAIL | AR9170_CTRL_BAFAIL);
-
-		/*
-		 * Note: wlan_tx_consume_retry will override the old
-		 * phy [CCK,OFDM, HT, BW20/40, MCS...] and mac vectors
-		 * [AMPDU,RTS/CTS,...] therefore be careful when they
-		 * are used.
-		 */
-		if (wlan_tx_consume_retry(super)) {
-			/*
-			 * retry for simple and aggregated 802.11 frames.
-			 *
-			 * Note: We must not mess up the original frame
-			 * order.
-			 */
-
-			if (!super->f.hdr.mac.ampdu) {
-				/*
-				 * 802.11 - 7.1.3.1.5.
-				 * set "Retry Field" for consecutive attempts
-				 *
-				 * Note: For AMPDU see:
-				 * 802.11n 9.9.1.6 "Retransmit Procedures"
-				 */
-				super->f.data.i3e.frame_control |=
-					cpu_to_le16(IEEE80211_FCTL_RETRY);
-			}
-
-			if (txfail) {
-				/* Normal TX Failure */
-
-				/* demise descriptor ownership back to the hardware */
-				dma_rearm(desc);
-
-				/*
-				 * And this will get the queue going again.
-				 * To understand why: you have to get the HW
-				 * specs... But sadly I never saw them.
-				 */
-				wlan_txunstuck(qidx);
-
-				/* abort cycle - this is necessary due to HW design */
-				return false;
-			} else {
-				/* (HT-) BlockACK failure */
-
-				/*
-				 * Unlink the failed attempt and put it into
-				 * the retry queue. The caller routine must
-				 * be aware of this so the frames don't get lost.
-				 */
-
-#ifndef CONFIG_CARL9170FW_DEBUG
-				dma_unlink_head(queue);
-#else /* CONFIG_CARL9170FW_DEBUG */
-				BUG_ON(dma_unlink_head(queue) != desc);
-#endif /* CONFIG_CARL9170FW_DEBUG */
-				dma_put(&fw.wlan.tx_retry, desc);
-				return true;
-			}
-		} else {
-			/* out of frame attempts - discard frame */
-			success = false;
-		}
-	}
-
-#ifndef CONFIG_CARL9170FW_DEBUG
-	dma_unlink_head(queue);
-#else /* CONFIG_CARL9170FW_DEBUG */
-	BUG_ON(dma_unlink_head(queue) != desc);
-#endif /* CONFIG_CARL9170FW_DEBUG */
-	if (txfail) {
-		/*
-		 * Issue the queue bump,
-		 * We need to do this in case this was the frame's last
-		 * possible retry attempt and it unfortunately: it failed.
-		 */
-
-		wlan_txunstuck(qidx);
-	}
-
-	unhide_super(desc);
-
-	if (unlikely(super == fw.wlan.fw_desc_data)) {
-		fw.wlan.fw_desc = desc;
-		fw.wlan.fw_desc_available = 1;
-
-		if (fw.wlan.fw_desc_callback)
-			fw.wlan.fw_desc_callback(super, success);
-
-		return true;
-	}
-
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-	if (unlikely(super->s.cab))
-		fw.wlan.cab_queue_len[super->s.vif_id]--;
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-	wlan_tx_complete(super, success);
-
-	if (ieee80211_is_back_req(super->f.data.i3e.frame_control)) {
-		fw.wlan.queued_bar--;
-	}
-
-	/* recycle freed descriptors */
-	dma_reclaim(&fw.pta.down_queue, desc);
-	down_trigger();
-	return true;
-}
-
-static void handle_tx_completion(void)
-{
-	struct dma_desc *desc;
-	int i;
-
-	for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
-		__while_desc_bits(desc, &fw.wlan.tx_queue[i], AR9170_OWN_BITS_SW) {
-			if (!wlan_tx_status(&fw.wlan.tx_queue[i], desc)) {
-				/* termination requested. */
-				break;
-			}
-		}
-
-		wlan_tx_ampdu_reset(i);
-
-		for_each_desc(desc, &fw.wlan.tx_retry)
-			__wlan_tx(desc);
-
-		wlan_tx_ampdu_end(i);
-		if (!queue_empty(&fw.wlan.tx_queue[i]))
-			wlan_trigger(BIT(i));
-	}
-}
-
-void __hot wlan_tx(struct dma_desc *desc)
-{
-	struct carl9170_tx_superframe *super = DESC_PAYLOAD(desc);
-
-	if (ieee80211_is_back_req(super->f.data.i3e.frame_control)) {
-		fw.wlan.queued_bar++;
-	}
-
-	/* initialize rate control struct */
-	super->s.rix = 0;
-	super->s.cnt = 1;
-	hide_super(desc);
-
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-	if (unlikely(super->s.cab)) {
-		fw.wlan.cab_queue_len[super->s.vif_id]++;
-		dma_put(&fw.wlan.cab_queue[super->s.vif_id], desc);
-		return;
-	}
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-	_wlan_tx(desc);
-	__wlan_tx(desc);
-	wlan_trigger(BIT(super->s.queue));
-}
-
-void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb)
-{
-	if (!fw.wlan.fw_desc_available)
-		return;
-
-	fw.wlan.fw_desc_available = 0;
-
-	/* Format BlockAck */
-	fw.wlan.fw_desc->ctrl = AR9170_CTRL_FS_BIT | AR9170_CTRL_LS_BIT;
-	fw.wlan.fw_desc->status = AR9170_OWN_BITS_SW;
-
-	fw.wlan.fw_desc->totalLen = fw.wlan.fw_desc->dataSize = super->len;
-	fw.wlan.fw_desc_data = fw.wlan.fw_desc->dataAddr = super;
-	fw.wlan.fw_desc->nextAddr = fw.wlan.fw_desc->lastAddr =
-		fw.wlan.fw_desc;
-	fw.wlan.fw_desc_callback = cb;
-	wlan_tx(fw.wlan.fw_desc);
-}
-
-static void wlan_send_buffered_ba(void)
-{
-	struct carl9170_tx_ba_superframe *baf = &dma_mem.reserved.ba.ba;
-	struct ieee80211_ba *ba = (struct ieee80211_ba *) &baf->f.ba;
-	struct carl9170_bar_ctx *ctx;
-
-	if (likely(!fw.wlan.queued_ba))
-		return;
-
-	/* there's no point to continue when the ba_desc is not available. */
-	if (!fw.wlan.fw_desc_available)
-		return;
-
-	ctx = &fw.wlan.ba_cache[fw.wlan.ba_head_idx];
-	fw.wlan.ba_head_idx++;
-	fw.wlan.ba_head_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM;
-	fw.wlan.queued_ba--;
-
-	baf->s.len = sizeof(struct carl9170_tx_superdesc) +
-		     sizeof(struct ar9170_tx_hwdesc) +
-		     sizeof(struct ieee80211_ba);
-	baf->s.ri[0].tries = 1;
-	baf->s.cookie = 0;
-	baf->s.queue = AR9170_TXQ_VO;
-	baf->f.hdr.length = sizeof(struct ieee80211_ba) + FCS_LEN;
-
-	baf->f.hdr.mac.no_ack = 1;
-
-	baf->f.hdr.phy.modulation = 1; /* OFDM */
-	baf->f.hdr.phy.tx_power = 34; /* 17 dBm */
-	baf->f.hdr.phy.chains = 1;
-	baf->f.hdr.phy.mcs = AR9170_TXRX_PHY_RATE_OFDM_6M;
-
-	/* format outgoing BA */
-	ba->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
-	ba->duration = cpu_to_le16(0);
-
-	/* the BAR contains all necessary MACs. All we need is to swap them */
-	memcpy(ba->ra, ctx->ta, 6);
-	memcpy(ba->ta, ctx->ra, 6);
-
-	/*
-	 * Unfortunately, we cannot look into the hardware's scoreboard.
-	 * Therefore we have to proceed as described in 802.11n 9.10.7.5
-	 * and send a null BlockAck.
-	 */
-	memset(ba->bitmap, 0x0, sizeof(ba->bitmap));
-
-	/*
-	 * Both, the original firmare and ath9k set the NO ACK flag in
-	 * the BA Ack Policy subfield.
-	 */
-	ba->control = ctx->control | cpu_to_le16(1);
-	ba->start_seq_num = ctx->start_seq_num;
-	wlan_tx_fw(&baf->s, NULL);
-}
-
-static struct carl9170_bar_ctx *wlan_get_bar_cache_buffer(void)
-{
-	struct carl9170_bar_ctx *tmp;
-
-	tmp = &fw.wlan.ba_cache[fw.wlan.ba_tail_idx];
-	fw.wlan.ba_tail_idx++;
-	fw.wlan.ba_tail_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM;
-	if (fw.wlan.queued_ba < CONFIG_CARL9170FW_BACK_REQS_NUM)
-		fw.wlan.queued_ba++;
-
-	return tmp;
-}
-
-static void handle_bar(struct dma_desc *desc __unused, struct ieee80211_hdr *hdr,
-		       unsigned int len, unsigned int mac_err)
-{
-	struct ieee80211_bar *bar;
-	struct carl9170_bar_ctx *ctx;
-
-	if (unlikely(mac_err)) {
-		/*
-		 * This check does a number of things:
-		 * 1. checks if the frame is in good nick
-		 * 2. checks if the RA (MAC) matches
-		 */
-		return ;
-	}
-
-	if (unlikely(len < (sizeof(struct ieee80211_bar) + FCS_LEN))) {
-		/*
-		 * Sneaky, corrupted BARs... but not with us!
-		 */
-
-		return ;
-	}
-
-	bar = (void *) hdr;
-
-	if ((bar->control & cpu_to_le16(IEEE80211_BAR_CTRL_MULTI_TID)) ||
-	    !(bar->control & cpu_to_le16(IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA))) {
-		/* not implemented yet */
-
-		return ;
-	}
-
-	ctx = wlan_get_bar_cache_buffer();
-
-	memcpy(ctx->ra, bar->ra, 6);
-	memcpy(ctx->ta, bar->ta, 6);
-	ctx->control = bar->control;
-	ctx->start_seq_num = bar->start_seq_num;
-}
-
-static void wlan_check_rx_overrun(void)
-{
-	uint32_t overruns, total;
-
-	fw.tally.rx_total += total = get(AR9170_MAC_REG_RX_TOTAL);
-	fw.tally.rx_overrun += overruns = get(AR9170_MAC_REG_RX_OVERRUN);
-	if (unlikely(overruns)) {
-		if (overruns == total) {
-			DBG("RX Overrun");
-			fw.wlan.mac_reset++;
-		}
-
-		wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
-	}
-}
-
-static unsigned int wlan_rx_filter(struct dma_desc *desc)
-{
-	struct ieee80211_hdr *hdr;
-	unsigned int data_len;
-	unsigned int rx_filter;
-	unsigned int mac_err;
-
-	data_len = ar9170_get_rx_mpdu_len(desc);
-	mac_err = ar9170_get_rx_macstatus_error(desc);
-
-#define AR9170_RX_ERROR_BAD (AR9170_RX_ERROR_FCS | AR9170_RX_ERROR_PLCP)
-
-	if (unlikely(data_len < (4 + 6 + FCS_LEN) ||
-	    desc->totalLen > CONFIG_CARL9170FW_RX_FRAME_LEN) ||
-	    mac_err & AR9170_RX_ERROR_BAD) {
-		/*
-		 * This frame is too damaged to do anything
-		 * useful with it.
-		 */
-
-		return CARL9170_RX_FILTER_BAD;
-	}
-
-	rx_filter = 0;
-	if (mac_err & AR9170_RX_ERROR_WRONG_RA)
-		rx_filter |= CARL9170_RX_FILTER_OTHER_RA;
-
-	if (mac_err & AR9170_RX_ERROR_DECRYPT)
-		rx_filter |= CARL9170_RX_FILTER_DECRY_FAIL;
-
-	hdr = ar9170_get_rx_i3e(desc);
-	if (likely(ieee80211_is_data(hdr->frame_control))) {
-		rx_filter |= CARL9170_RX_FILTER_DATA;
-	} else if (ieee80211_is_ctl(hdr->frame_control)) {
-		switch (le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_STYPE) {
-		case IEEE80211_STYPE_BACK_REQ:
-			handle_bar(desc, hdr, data_len, mac_err);
-			rx_filter |= CARL9170_RX_FILTER_CTL_BACKR;
-			break;
-		case IEEE80211_STYPE_PSPOLL:
-			rx_filter |= CARL9170_RX_FILTER_CTL_PSPOLL;
-			break;
-		case IEEE80211_STYPE_BACK:
-			if (fw.wlan.queued_bar) {
-				/*
-				 * Don't filter block acks when the application
-				 * has queued BARs. This is because the firmware
-				 * can't do the accouting and the application
-				 * has to sort out if the BA belongs to any BARs.
-				 */
-				break;
-			}
-			/* otherwise fall through */
-		default:
-			rx_filter |= CARL9170_RX_FILTER_CTL_OTHER;
-			break;
-		}
-	} else {
-		/* ieee80211_is_mgmt */
-		rx_filter |= CARL9170_RX_FILTER_MGMT;
-	}
-
-	if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) {
-		wol_rx(rx_filter, hdr, min(data_len,
-			(unsigned int)AR9170_BLOCK_SIZE));
-	}
-
-#undef AR9170_RX_ERROR_BAD
-
-	return rx_filter;
-}
-
-static void handle_rx(void)
-{
-	struct dma_desc *desc;
-
-	for_each_desc_not_bits(desc, &fw.wlan.rx_queue, AR9170_OWN_BITS_HW) {
-		if (!(wlan_rx_filter(desc) & fw.wlan.rx_filter)) {
-			dma_put(&fw.pta.up_queue, desc);
-			up_trigger();
-		} else {
-			dma_reclaim(&fw.wlan.rx_queue, desc);
-			wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
-		}
-	}
-}
-
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-void wlan_cab_flush_queue(const unsigned int vif)
-{
-	struct dma_queue *cab_queue = &fw.wlan.cab_queue[vif];
-	struct dma_desc *desc;
-
-	/* move queued frames into the main tx queues */
-	for_each_desc(desc, cab_queue) {
-		struct carl9170_tx_superframe *super = get_super(desc);
-		if (!queue_empty(cab_queue)) {
-			/*
-			 * Set MOREDATA flag for all,
-			 * but the last queued frame.
-			 * see: 802.11-2007 11.2.1.5 f)
-			 *
-			 * This is actually the reason to why
-			 * we need to prevent the reentry.
-			 */
-
-			super->f.data.i3e.frame_control |=
-				cpu_to_le16(IEEE80211_FCTL_MOREDATA);
-		} else {
-			super->f.data.i3e.frame_control &=
-				cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
-		}
-
-		/* ready to roll! */
-		_wlan_tx(desc);
-		__wlan_tx(desc);
-		wlan_trigger(BIT(super->s.queue));
-	}
-}
-
-static uint8_t *beacon_find_ie(uint8_t ie, void *addr,
-			       const unsigned int len)
-{
-	struct ieee80211_mgmt *mgmt = addr;
-	uint8_t *pos, *end;
-
-	pos = mgmt->u.beacon.variable;
-	end = (uint8_t *) ((unsigned long)mgmt + (len - FCS_LEN));
-	while (pos < end) {
-		if (pos + 2 + pos[1] > end)
-			return NULL;
-
-		if (pos[0] == ie)
-			return pos;
-
-		pos += pos[1] + 2;
-	}
-
-	return NULL;
-}
-
-void wlan_modify_beacon(const unsigned int vif,
-	const unsigned int addr, const unsigned int len)
-{
-	uint8_t *_ie;
-	struct ieee80211_tim_ie *ie;
-
-	_ie = beacon_find_ie(WLAN_EID_TIM, (void *)addr, len);
-	if (likely(_ie)) {
-		ie = (struct ieee80211_tim_ie *) &_ie[2];
-
-		if (!queue_empty(&fw.wlan.cab_queue[vif]) && (ie->dtim_count == 0)) {
-			/* schedule DTIM transfer */
-			fw.wlan.cab_flush_trigger[vif] = CARL9170_CAB_TRIGGER_ARMED;
-		} else if ((fw.wlan.cab_queue_len[vif] == 0) && (fw.wlan.cab_flush_trigger[vif])) {
-			/* undo all chances to the beacon structure */
-			ie->bitmap_ctrl &= ~0x1;
-			fw.wlan.cab_flush_trigger[vif] = CARL9170_CAB_TRIGGER_EMPTY;
-		}
-
-		/* Triggered by CARL9170_CAB_TRIGGER_ARMED || CARL9170_CAB_TRIGGER_DEFER */
-		if (fw.wlan.cab_flush_trigger[vif]) {
-			/* Set the almighty Multicast Traffic Indication Bit. */
-			ie->bitmap_ctrl |= 0x1;
-		}
-	}
-
-	/*
-	 * Ideally, the sequence number should be assigned by the TX arbiter
-	 * hardware. But AFAIK that's not possible, so we have to go for the
-	 * next best thing and write it into the beacon fifo during the open
-	 * beacon update window.
-	 */
-
-	wlan_assign_seq((struct ieee80211_hdr *)addr, vif);
-}
-
-static void wlan_send_buffered_cab(void)
-{
-	unsigned int i;
-
-	for (i = 0; i < CARL9170_INTF_NUM; i++) {
-		if (unlikely(fw.wlan.cab_flush_trigger[i] == CARL9170_CAB_TRIGGER_ARMED)) {
-			/*
-			 * This is hardcoded into carl9170usb driver.
-			 *
-			 * The driver must set the PRETBTT event to beacon_interval -
-			 * CARL9170_PRETBTT_KUS (usually 6) Kus.
-			 *
-			 * But still, we can only do so much about 802.11-2007 9.3.2.1 &
-			 * 11.2.1.6. Let's hope the current solution is adequate enough.
-			 */
-
-			if (is_after_msecs(fw.wlan.cab_flush_time, (CARL9170_TBTT_DELTA))) {
-				wlan_cab_flush_queue(i);
-
-				/*
-				 * This prevents the code from sending new BC/MC frames
-				 * which were queued after the previous buffered traffic
-				 * has been sent out... They will have to wait until the
-				 * next DTIM beacon comes along.
-				 */
-				fw.wlan.cab_flush_trigger[i] = CARL9170_CAB_TRIGGER_DEFER;
-			}
-		}
-
-	}
-}
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-static void handle_beacon_config(void)
-{
-	uint32_t bcn_count;
-
-	bcn_count = get(AR9170_MAC_REG_BCN_COUNT);
-	send_cmd_to_host(4, CARL9170_RSP_BEACON_CONFIG, 0x00,
-			 (uint8_t *) &bcn_count);
-}
-
-static void handle_pretbtt(void)
-{
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-	fw.wlan.cab_flush_time = get_clock_counter();
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
-	rf_psm();
-
-	send_cmd_to_host(4, CARL9170_RSP_PRETBTT, 0x00,
-			 (uint8_t *) &fw.phy.psm.state);
-#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
-}
-
-static void handle_atim(void)
-{
-	send_cmd_to_host(0, CARL9170_RSP_ATIM, 0x00, NULL);
-}
-
-#ifdef CONFIG_CARL9170FW_DEBUG
-static void handle_qos(void)
-{
-	/*
-	 * What is the QoS Bit used for?
-	 * Is it only an indicator for TXOP & Burst, or
-	 * should we do something here?
-	 */
-}
-
-static void handle_radar(void)
-{
-	send_cmd_to_host(0, CARL9170_RSP_RADAR, 0x00, NULL);
-}
-#endif /* CONFIG_CARL9170FW_DEBUG */
-
-static void wlan_janitor(void)
-{
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-	wlan_send_buffered_cab();
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
-	wlan_send_buffered_tx_status();
-
-	wlan_send_buffered_ba();
-
-	wol_janitor();
-}
-
-void handle_wlan(void)
-{
-	uint32_t intr;
-
-	intr = get(AR9170_MAC_REG_INT_CTRL);
-	/* ACK Interrupt */
-	set(AR9170_MAC_REG_INT_CTRL, intr);
-
-#define HANDLER(intr, flag, func)			\
-	do {						\
-		if ((intr & flag) != 0) {		\
-			func();				\
-		}					\
-	} while (0)
-
-	intr |= fw.wlan.soft_int;
-	fw.wlan.soft_int = 0;
-
-	HANDLER(intr, AR9170_MAC_INT_PRETBTT, handle_pretbtt);
-
-	HANDLER(intr, AR9170_MAC_INT_ATIM, handle_atim);
-
-	HANDLER(intr, AR9170_MAC_INT_RXC, handle_rx);
-
-	HANDLER(intr, (AR9170_MAC_INT_TXC | AR9170_MAC_INT_RETRY_FAIL),
-		handle_tx_completion);
-
-#ifdef CONFIG_CARL9170FW_DEBUG
-	HANDLER(intr, AR9170_MAC_INT_QOS, handle_qos);
-
-	HANDLER(intr, AR9170_MAC_INT_RADAR, handle_radar);
-#endif /* CONFIG_CARL9170FW_DEBUG */
-
-	HANDLER(intr, AR9170_MAC_INT_CFG_BCN, handle_beacon_config);
-
-	if (unlikely(intr))
-		DBG("Unhandled Interrupt %x\n", (unsigned int) intr);
-
-	wlan_janitor();
-
-#undef HANDLER
-}
-
-enum {
-	CARL9170FW_TX_MAC_BUMP = 4,
-	CARL9170FW_TX_MAC_DEBUG = 6,
-	CARL9170FW_TX_MAC_RESET = 7,
-};
-
-static void wlan_check_hang(void)
-{
-	struct dma_desc *desc;
-	int i;
-
-	for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
-		if (queue_empty(&fw.wlan.tx_queue[i])) {
-			/* Nothing to do here... move along */
-			continue;
-		}
-
-		/* fetch the current DMA queue position */
-		desc = (struct dma_desc *)get_wlan_txq_addr(i);
-
-		/* Stuck frame detection */
-		if (unlikely(DESC_PAYLOAD(desc) == fw.wlan.last_super[i])) {
-			fw.wlan.last_super_num[i]++;
-
-			if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_RESET)) {
-				/*
-				 * schedule MAC reset (aka OFF/ON => dead)
-				 *
-				 * This will almost certainly kill
-				 * the device for good, but it's the
-				 * recommended thing to do...
-				 */
-
-				fw.wlan.mac_reset++;
-			}
-
-#ifdef CONFIG_CARL9170FW_DEBUG
-			if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_DEBUG)) {
-				/*
-				 * Sigh, the queue is almost certainly
-				 * dead. Dump the queue content to the
-				 * user, maybe we find out why it got
-				 * so stuck.
-				 */
-
-				wlan_dump_queue(i);
-			}
-#endif /* CONFIG_CARL9170FW_DEBUG */
-
-#ifdef CONFIG_CARL9170FW_DMA_QUEUE_BUMP
-			if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_BUMP)) {
-				/*
-				 * Hrrm, bump the queue a bit.
-				 * maybe this will get it going again.
-				 */
-
-				wlan_dma_bump(i);
-				wlan_trigger(BIT(i));
-			}
-#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
-		} else {
-			/* Nothing stuck */
-			fw.wlan.last_super[i] = DESC_PAYLOAD(desc);
-			fw.wlan.last_super_num[i] = 0;
-		}
-	}
-}
-
-#ifdef CONFIG_CARL9170FW_FW_MAC_RESET
-/*
- * NB: Resetting the MAC is a two-edged sword.
- * On most occasions, it does what it is supposed to do.
- * But there is a chance that this will make it
- * even worse and the radio dies silently.
- */
-static void wlan_mac_reset(void)
-{
-	uint32_t val;
-	uint32_t agg_wait_counter;
-	uint32_t agg_density;
-	uint32_t bcn_start_addr;
-	uint32_t rctl, rcth;
-	uint32_t cam_mode;
-	uint32_t ack_power;
-	uint32_t rts_cts_tpc;
-	uint32_t rts_cts_rate;
-	int i;
-
-#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
-	uint32_t rx_BB;
-#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
-
-#ifdef CONFIG_CARL9170FW_NOISY_MAC_RESET
-	INFO("MAC RESET");
-#endif /* CONFIG_CARL9170FW_NOISY_MAC_RESET */
-
-	/* Save aggregation parameters */
-	agg_wait_counter = get(AR9170_MAC_REG_AMPDU_FACTOR);
-	agg_density = get(AR9170_MAC_REG_AMPDU_DENSITY);
-
-	bcn_start_addr = get(AR9170_MAC_REG_BCN_ADDR);
-
-	cam_mode = get(AR9170_MAC_REG_CAM_MODE);
-	rctl = get(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_L);
-	rcth = get(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_H);
-
-	ack_power = get(AR9170_MAC_REG_ACK_TPC);
-	rts_cts_tpc = get(AR9170_MAC_REG_RTS_CTS_TPC);
-	rts_cts_rate = get(AR9170_MAC_REG_RTS_CTS_RATE);
-
-#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
-	/* 0x1c8960 write only */
-	rx_BB = get(AR9170_PHY_REG_SWITCH_CHAIN_0);
-#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
-
-	/* TX/RX must be stopped by now */
-	val = get(AR9170_MAC_REG_POWER_STATE_CTRL);
-
-	val |= AR9170_MAC_POWER_STATE_CTRL_RESET;
-
-	/*
-	 * Manipulate CCA threshold to stop transmission
-	 *
-	 * set(AR9170_PHY_REG_CCA_THRESHOLD, 0x300);
-	 */
-
-	/*
-	 * check Rx state in 0(idle) 9(disable)
-	 *
-	 * chState = (get(AR9170_MAC_REG_MISC_684) >> 16) & 0xf;
-	 * while( (chState != 0) && (chState != 9)) {
-	 *	chState = (get(AR9170_MAC_REG_MISC_684) >> 16) & 0xf;
-	 * }
-	 */
-
-	set(AR9170_MAC_REG_POWER_STATE_CTRL, val);
-
-	delay(2);
-
-	/* Restore aggregation parameters */
-	set(AR9170_MAC_REG_AMPDU_FACTOR, agg_wait_counter);
-	set(AR9170_MAC_REG_AMPDU_DENSITY, agg_density);
-
-	set(AR9170_MAC_REG_BCN_ADDR, bcn_start_addr);
-	set(AR9170_MAC_REG_CAM_MODE, cam_mode);
-	set(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_L, rctl);
-	set(AR9170_MAC_REG_CAM_ROLL_CALL_TBL_H, rcth);
-
-	set(AR9170_MAC_REG_RTS_CTS_TPC, rts_cts_tpc);
-	set(AR9170_MAC_REG_ACK_TPC, ack_power);
-	set(AR9170_MAC_REG_RTS_CTS_RATE, rts_cts_rate);
-
-#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
-	set(AR9170_PHY_REG_SWITCH_CHAIN_2, rx_BB);
-#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
-
-	/*
-	 * Manipulate CCA threshold to resume transmission
-	 *
-	 * set(AR9170_PHY_REG_CCA_THRESHOLD, 0x0);
-	 */
-
-	val = AR9170_DMA_TRIGGER_RXQ;
-	/* Reinitialize all WLAN TX DMA queues. */
-	for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
-		struct dma_desc *iter;
-
-		__for_each_desc_bits(iter, &fw.wlan.tx_queue[i], AR9170_OWN_BITS_SW);
-
-		/* kill the stuck frame */
-		if (!is_terminator(&fw.wlan.tx_queue[i], iter) &&
-		    fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_RESET &&
-		    fw.wlan.last_super[i] == DESC_PAYLOAD(iter)) {
-			struct carl9170_tx_superframe *super = get_super(iter);
-
-			iter->status = AR9170_OWN_BITS_SW;
-			/*
-			 * Mark the frame as failed.
-			 * The BAFAIL flag allows the frame to sail through
-			 * wlan_tx_status without much "unstuck" trouble.
-			 */
-			iter->ctrl &= ~(AR9170_CTRL_FAIL);
-			iter->ctrl |= AR9170_CTRL_BAFAIL;
-
-			super->s.cnt = CARL9170_TX_MAX_RATE_TRIES;
-			super->s.rix = CARL9170_TX_MAX_RETRY_RATES;
-
-			fw.wlan.last_super_num[i] = 0;
-			fw.wlan.last_super[i] = NULL;
-			iter = iter->lastAddr->nextAddr;
-		}
-
-		set_wlan_txq_dma_addr(i, (uint32_t) iter);
-		if (!is_terminator(&fw.wlan.tx_queue[i], iter))
-			val |= BIT(i);
-
-		DBG("Q:%d l:%d h:%p t:%p cu:%p it:%p ct:%x st:%x\n", i, queue_len(&fw.wlan.tx_queue[i]),
-		     fw.wlan.tx_queue[i].head, fw.wlan.tx_queue[i].terminator,
-		     get_wlan_txq_addr(i), iter, iter->ctrl, iter->status);
-	}
-
-	fw.wlan.soft_int |= AR9170_MAC_INT_RXC | AR9170_MAC_INT_TXC |
-			    AR9170_MAC_INT_RETRY_FAIL;
-
-	set(AR9170_MAC_REG_DMA_RXQ_ADDR, (uint32_t) fw.wlan.rx_queue.head);
-	wlan_trigger(val);
-}
-#else
-static void wlan_mac_reset(void)
-{
-	/* The driver takes care of reinitializing the device */
-	BUG("MAC RESET");
-}
-#endif /* CONFIG_CARL9170FW_FW_MAC_RESET */
-
-void __cold wlan_timer(void)
-{
-	unsigned int cached_mac_reset;
-
-	cached_mac_reset = fw.wlan.mac_reset;
-
-	/* TX Queue Hang check */
-	wlan_check_hang();
-
-	/* RX Overrun check */
-	wlan_check_rx_overrun();
-
-	if (unlikely(fw.wlan.mac_reset >= CARL9170_MAC_RESET_RESET)) {
-		wlan_mac_reset();
-		fw.wlan.mac_reset = CARL9170_MAC_RESET_OFF;
-	} else {
-		if (fw.wlan.mac_reset && cached_mac_reset == fw.wlan.mac_reset)
-			fw.wlan.mac_reset--;
-	}
-}