[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 642 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/xmit.c b/drivers/net/wireless/b43legacy/xmit.c
new file mode 100644
index 00000000000..fa1e65687a6
--- /dev/null
+++ b/drivers/net/wireless/b43legacy/xmit.c
@@ -0,0 +1,642 @@
+/*
+
+  Broadcom B43legacy wireless driver
+
+  Transmission (TX/RX) related functions.
+
+  Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+  Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+  Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
+  Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+  Copyright (C) 2007 Larry Finger <Larry.Finger@lwfinger.net>
+
+  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, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include <net/dst.h>
+
+#include "xmit.h"
+#include "phy.h"
+#include "dma.h"
+#include "pio.h"
+
+
+/* Extract the bitrate out of a CCK PLCP header. */
+static u8 b43legacy_plcp_get_bitrate_cck(struct b43legacy_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0]) {
+	case 0x0A:
+		return B43legacy_CCK_RATE_1MB;
+	case 0x14:
+		return B43legacy_CCK_RATE_2MB;
+	case 0x37:
+		return B43legacy_CCK_RATE_5MB;
+	case 0x6E:
+		return B43legacy_CCK_RATE_11MB;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+/* Extract the bitrate out of an OFDM PLCP header. */
+static u8 b43legacy_plcp_get_bitrate_ofdm(struct b43legacy_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0] & 0xF) {
+	case 0xB:
+		return B43legacy_OFDM_RATE_6MB;
+	case 0xF:
+		return B43legacy_OFDM_RATE_9MB;
+	case 0xA:
+		return B43legacy_OFDM_RATE_12MB;
+	case 0xE:
+		return B43legacy_OFDM_RATE_18MB;
+	case 0x9:
+		return B43legacy_OFDM_RATE_24MB;
+	case 0xD:
+		return B43legacy_OFDM_RATE_36MB;
+	case 0x8:
+		return B43legacy_OFDM_RATE_48MB;
+	case 0xC:
+		return B43legacy_OFDM_RATE_54MB;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_CCK_RATE_1MB:
+		return 0x0A;
+	case B43legacy_CCK_RATE_2MB:
+		return 0x14;
+	case B43legacy_CCK_RATE_5MB:
+		return 0x37;
+	case B43legacy_CCK_RATE_11MB:
+		return 0x6E;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_OFDM_RATE_6MB:
+		return 0xB;
+	case B43legacy_OFDM_RATE_9MB:
+		return 0xF;
+	case B43legacy_OFDM_RATE_12MB:
+		return 0xA;
+	case B43legacy_OFDM_RATE_18MB:
+		return 0xE;
+	case B43legacy_OFDM_RATE_24MB:
+		return 0x9;
+	case B43legacy_OFDM_RATE_36MB:
+		return 0xD;
+	case B43legacy_OFDM_RATE_48MB:
+		return 0x8;
+	case B43legacy_OFDM_RATE_54MB:
+		return 0xC;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp,
+				 const u16 octets, const u8 bitrate)
+{
+	__le32 *data = &(plcp->data);
+	__u8 *raw = plcp->raw;
+
+	if (b43legacy_is_ofdm_rate(bitrate)) {
+		u16 d;
+
+		d = b43legacy_plcp_get_ratecode_ofdm(bitrate);
+		B43legacy_WARN_ON(octets & 0xF000);
+		d |= (octets << 5);
+		*data = cpu_to_le32(d);
+	} else {
+		u32 plen;
+
+		plen = octets * 16 / bitrate;
+		if ((octets * 16 % bitrate) > 0) {
+			plen++;
+			if ((bitrate == B43legacy_CCK_RATE_11MB)
+			    && ((octets * 8 % 11) < 4))
+				raw[1] = 0x84;
+			else
+				raw[1] = 0x04;
+		} else
+			raw[1] = 0x04;
+		*data |= cpu_to_le32(plen << 16);
+		raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate);
+	}
+}
+
+static u8 b43legacy_calc_fallback_rate(u8 bitrate)
+{
+	switch (bitrate) {
+	case B43legacy_CCK_RATE_1MB:
+		return B43legacy_CCK_RATE_1MB;
+	case B43legacy_CCK_RATE_2MB:
+		return B43legacy_CCK_RATE_1MB;
+	case B43legacy_CCK_RATE_5MB:
+		return B43legacy_CCK_RATE_2MB;
+	case B43legacy_CCK_RATE_11MB:
+		return B43legacy_CCK_RATE_5MB;
+	case B43legacy_OFDM_RATE_6MB:
+		return B43legacy_CCK_RATE_5MB;
+	case B43legacy_OFDM_RATE_9MB:
+		return B43legacy_OFDM_RATE_6MB;
+	case B43legacy_OFDM_RATE_12MB:
+		return B43legacy_OFDM_RATE_9MB;
+	case B43legacy_OFDM_RATE_18MB:
+		return B43legacy_OFDM_RATE_12MB;
+	case B43legacy_OFDM_RATE_24MB:
+		return B43legacy_OFDM_RATE_18MB;
+	case B43legacy_OFDM_RATE_36MB:
+		return B43legacy_OFDM_RATE_24MB;
+	case B43legacy_OFDM_RATE_48MB:
+		return B43legacy_OFDM_RATE_36MB;
+	case B43legacy_OFDM_RATE_54MB:
+		return B43legacy_OFDM_RATE_48MB;
+	}
+	B43legacy_BUG_ON(1);
+	return 0;
+}
+
+static void generate_txhdr_fw3(struct b43legacy_wldev *dev,
+			       struct b43legacy_txhdr_fw3 *txhdr,
+			       const unsigned char *fragment_data,
+			       unsigned int fragment_len,
+			       const struct ieee80211_tx_control *txctl,
+			       u16 cookie)
+{
+	const struct ieee80211_hdr *wlhdr;
+	int use_encryption = (!(txctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT));
+	u16 fctl;
+	u8 rate;
+	u8 rate_fb;
+	int rate_ofdm;
+	int rate_fb_ofdm;
+	unsigned int plcp_fragment_len;
+	u32 mac_ctl = 0;
+	u16 phy_ctl = 0;
+
+	wlhdr = (const struct ieee80211_hdr *)fragment_data;
+	fctl = le16_to_cpu(wlhdr->frame_control);
+
+	memset(txhdr, 0, sizeof(*txhdr));
+
+	rate = txctl->tx_rate;
+	rate_ofdm = b43legacy_is_ofdm_rate(rate);
+	rate_fb = (txctl->alt_retry_rate == -1) ? rate : txctl->alt_retry_rate;
+	rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb);
+
+	txhdr->mac_frame_ctl = wlhdr->frame_control;
+	memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
+
+	/* Calculate duration for fallback rate */
+	if ((rate_fb == rate) ||
+	    (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
+	    (wlhdr->duration_id == cpu_to_le16(0))) {
+		/* If the fallback rate equals the normal rate or the
+		 * dur_id field contains an AID, CFP magic or 0,
+		 * use the original dur_id field. */
+		txhdr->dur_fb = wlhdr->duration_id;
+	} else {
+		int fbrate_base100kbps = B43legacy_RATE_TO_100KBPS(rate_fb);
+		txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
+							 dev->wl->if_id,
+							 fragment_len,
+							 fbrate_base100kbps);
+	}
+
+	plcp_fragment_len = fragment_len + FCS_LEN;
+	if (use_encryption) {
+		u8 key_idx = (u16)(txctl->key_idx);
+		struct b43legacy_key *key;
+		int wlhdr_len;
+		size_t iv_len;
+
+		B43legacy_WARN_ON(key_idx >= dev->max_nr_keys);
+		key = &(dev->key[key_idx]);
+
+		if (key->enabled) {
+			/* Hardware appends ICV. */
+			plcp_fragment_len += txctl->icv_len;
+
+			key_idx = b43legacy_kidx_to_fw(dev, key_idx);
+			mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) &
+				   B43legacy_TX4_MAC_KEYIDX;
+			mac_ctl |= (key->algorithm <<
+				   B43legacy_TX4_MAC_KEYALG_SHIFT) &
+				   B43legacy_TX4_MAC_KEYALG;
+			wlhdr_len = ieee80211_get_hdrlen(fctl);
+			iv_len = min((size_t)txctl->iv_len,
+				     ARRAY_SIZE(txhdr->iv));
+			memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len);
+		}
+	}
+	b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+				    (&txhdr->plcp), plcp_fragment_len,
+				    rate);
+	b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+				    (&txhdr->plcp_fb), plcp_fragment_len,
+				    rate_fb);
+
+	/* PHY TX Control word */
+	if (rate_ofdm)
+		phy_ctl |= B43legacy_TX4_PHY_OFDM;
+	if (dev->short_preamble)
+		phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL;
+	switch (txctl->antenna_sel_tx) {
+	case 0:
+		phy_ctl |= B43legacy_TX4_PHY_ANTLAST;
+		break;
+	case 1:
+		phy_ctl |= B43legacy_TX4_PHY_ANT0;
+		break;
+	case 2:
+		phy_ctl |= B43legacy_TX4_PHY_ANT1;
+		break;
+	default:
+		B43legacy_BUG_ON(1);
+	}
+
+	/* MAC control */
+	if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
+		mac_ctl |= B43legacy_TX4_MAC_ACK;
+	if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
+	      ((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
+		mac_ctl |= B43legacy_TX4_MAC_HWSEQ;
+	if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
+		mac_ctl |= B43legacy_TX4_MAC_STMSDU;
+	if (rate_fb_ofdm)
+		mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM;
+
+	/* Generate the RTS or CTS-to-self frame */
+	if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
+	    (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+		unsigned int len;
+		struct ieee80211_hdr *hdr;
+		int rts_rate;
+		int rts_rate_fb;
+		int rts_rate_ofdm;
+		int rts_rate_fb_ofdm;
+
+		rts_rate = txctl->rts_cts_rate;
+		rts_rate_ofdm = b43legacy_is_ofdm_rate(rts_rate);
+		rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate);
+		rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb);
+		if (rts_rate_fb_ofdm)
+			mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM;
+
+		if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
+			ieee80211_ctstoself_get(dev->wl->hw,
+						dev->wl->if_id,
+						fragment_data,
+						fragment_len, txctl,
+						(struct ieee80211_cts *)
+						(txhdr->rts_frame));
+			mac_ctl |= B43legacy_TX4_MAC_SENDCTS;
+			len = sizeof(struct ieee80211_cts);
+		} else {
+			ieee80211_rts_get(dev->wl->hw,
+					  dev->wl->if_id,
+					  fragment_data, fragment_len, txctl,
+					  (struct ieee80211_rts *)
+					  (txhdr->rts_frame));
+			mac_ctl |= B43legacy_TX4_MAC_SENDRTS;
+			len = sizeof(struct ieee80211_rts);
+		}
+		len += FCS_LEN;
+		b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+					    (&txhdr->rts_plcp),
+					    len, rts_rate);
+		b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *)
+					    (&txhdr->rts_plcp_fb),
+					    len, rts_rate_fb);
+		hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
+		txhdr->rts_dur_fb = hdr->duration_id;
+		mac_ctl |= B43legacy_TX4_MAC_LONGFRAME;
+	}
+
+	/* Magic cookie */
+	txhdr->cookie = cpu_to_le16(cookie);
+
+	/* Apply the bitfields */
+	txhdr->mac_ctl = cpu_to_le32(mac_ctl);
+	txhdr->phy_ctl = cpu_to_le16(phy_ctl);
+}
+
+void b43legacy_generate_txhdr(struct b43legacy_wldev *dev,
+			      u8 *txhdr,
+			      const unsigned char *fragment_data,
+			      unsigned int fragment_len,
+			      const struct ieee80211_tx_control *txctl,
+			      u16 cookie)
+{
+	generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr,
+			   fragment_data, fragment_len,
+			   txctl, cookie);
+}
+
+static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev,
+				     u8 in_rssi, int ofdm,
+				     int adjust_2053, int adjust_2050)
+{
+	struct b43legacy_phy *phy = &dev->phy;
+	s32 tmp;
+
+	switch (phy->radio_ver) {
+	case 0x2050:
+		if (ofdm) {
+			tmp = in_rssi;
+			if (tmp > 127)
+				tmp -= 256;
+			tmp *= 73;
+			tmp /= 64;
+			if (adjust_2050)
+				tmp += 25;
+			else
+				tmp -= 3;
+		} else {
+			if (dev->dev->bus->sprom.r1.boardflags_lo
+			    & B43legacy_BFL_RSSI) {
+				if (in_rssi > 63)
+					in_rssi = 63;
+				tmp = phy->nrssi_lt[in_rssi];
+				tmp = 31 - tmp;
+				tmp *= -131;
+				tmp /= 128;
+				tmp -= 57;
+			} else {
+				tmp = in_rssi;
+				tmp = 31 - tmp;
+				tmp *= -149;
+				tmp /= 128;
+				tmp -= 68;
+			}
+			if (phy->type == B43legacy_PHYTYPE_G &&
+			    adjust_2050)
+				tmp += 25;
+		}
+		break;
+	case 0x2060:
+		if (in_rssi > 127)
+			tmp = in_rssi - 256;
+		else
+			tmp = in_rssi;
+		break;
+	default:
+		tmp = in_rssi;
+		tmp -= 11;
+		tmp *= 103;
+		tmp /= 64;
+		if (adjust_2053)
+			tmp -= 109;
+		else
+			tmp -= 83;
+	}
+
+	return (s8)tmp;
+}
+
+void b43legacy_rx(struct b43legacy_wldev *dev,
+		  struct sk_buff *skb,
+		  const void *_rxhdr)
+{
+	struct ieee80211_rx_status status;
+	struct b43legacy_plcp_hdr6 *plcp;
+	struct ieee80211_hdr *wlhdr;
+	const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr;
+	u16 fctl;
+	u16 phystat0;
+	u16 phystat3;
+	u16 chanstat;
+	u16 mactime;
+	u32 macstat;
+	u16 chanid;
+	u8 jssi;
+	int padding;
+
+	memset(&status, 0, sizeof(status));
+
+	/* Get metadata about the frame from the header. */
+	phystat0 = le16_to_cpu(rxhdr->phy_status0);
+	phystat3 = le16_to_cpu(rxhdr->phy_status3);
+	jssi = rxhdr->jssi;
+	macstat = le16_to_cpu(rxhdr->mac_status);
+	mactime = le16_to_cpu(rxhdr->mac_time);
+	chanstat = le16_to_cpu(rxhdr->channel);
+
+	if (macstat & B43legacy_RX_MAC_FCSERR)
+		dev->wl->ieee_stats.dot11FCSErrorCount++;
+
+	/* Skip PLCP and padding */
+	padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0;
+	if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) +
+	    padding))) {
+		b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n");
+		goto drop;
+	}
+	plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding);
+	skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding);
+	/* The skb contains the Wireless Header + payload data now */
+	if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) {
+		b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n");
+		goto drop;
+	}
+	wlhdr = (struct ieee80211_hdr *)(skb->data);
+	fctl = le16_to_cpu(wlhdr->frame_control);
+
+	if ((macstat & B43legacy_RX_MAC_DEC) &&
+	    !(macstat & B43legacy_RX_MAC_DECERR)) {
+		unsigned int keyidx;
+		int wlhdr_len;
+		int iv_len;
+		int icv_len;
+
+		keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX)
+			  >> B43legacy_RX_MAC_KEYIDX_SHIFT);
+		/* We must adjust the key index here. We want the "physical"
+		 * key index, but the ucode passed it slightly different.
+		 */
+		keyidx = b43legacy_kidx_to_raw(dev, keyidx);
+		B43legacy_WARN_ON(keyidx >= dev->max_nr_keys);
+
+		if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) {
+			/* Remove PROTECTED flag to mark it as decrypted. */
+			B43legacy_WARN_ON(!(fctl & IEEE80211_FCTL_PROTECTED));
+			fctl &= ~IEEE80211_FCTL_PROTECTED;
+			wlhdr->frame_control = cpu_to_le16(fctl);
+
+			wlhdr_len = ieee80211_get_hdrlen(fctl);
+			if (unlikely(skb->len < (wlhdr_len + 3))) {
+				b43legacydbg(dev->wl, "RX: Packet size"
+					     " underrun3\n");
+				goto drop;
+			}
+			if (skb->data[wlhdr_len + 3] & (1 << 5)) {
+				/* The Ext-IV Bit is set in the "KeyID"
+				 * octet of the IV.
+				 */
+				iv_len = 8;
+				icv_len = 8;
+			} else {
+				iv_len = 4;
+				icv_len = 4;
+			}
+			if (unlikely(skb->len < (wlhdr_len + iv_len +
+			    icv_len))) {
+				b43legacydbg(dev->wl, "RX: Packet size"
+					     " underrun4\n");
+				goto drop;
+			}
+			/* Remove the IV */
+			memmove(skb->data + iv_len, skb->data, wlhdr_len);
+			skb_pull(skb, iv_len);
+			/* Remove the ICV */
+			skb_trim(skb, skb->len - icv_len);
+
+			status.flag |= RX_FLAG_DECRYPTED;
+		}
+	}
+
+	status.ssi = b43legacy_rssi_postprocess(dev, jssi,
+				      (phystat0 & B43legacy_RX_PHYST0_OFDM),
+				      (phystat0 & B43legacy_RX_PHYST0_GAINCTL),
+				      (phystat3 & B43legacy_RX_PHYST3_TRSTATE));
+	status.noise = dev->stats.link_noise;
+	status.signal = (jssi * 100) / B43legacy_RX_MAX_SSI;
+	if (phystat0 & B43legacy_RX_PHYST0_OFDM)
+		status.rate = b43legacy_plcp_get_bitrate_ofdm(plcp);
+	else
+		status.rate = b43legacy_plcp_get_bitrate_cck(plcp);
+	status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT);
+	status.mactime = mactime;
+
+	chanid = (chanstat & B43legacy_RX_CHAN_ID) >>
+		  B43legacy_RX_CHAN_ID_SHIFT;
+	switch (chanstat & B43legacy_RX_CHAN_PHYTYPE) {
+	case B43legacy_PHYTYPE_B:
+		status.phymode = MODE_IEEE80211B;
+		status.freq = chanid + 2400;
+		status.channel = b43legacy_freq_to_channel_bg(chanid + 2400);
+		break;
+	case B43legacy_PHYTYPE_G:
+		status.phymode = MODE_IEEE80211G;
+		status.freq = chanid + 2400;
+		status.channel = b43legacy_freq_to_channel_bg(chanid + 2400);
+		break;
+	default:
+		b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n",
+		       chanstat);
+	}
+
+	dev->stats.last_rx = jiffies;
+	ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
+
+	return;
+drop:
+	b43legacydbg(dev->wl, "RX: Packet dropped\n");
+	dev_kfree_skb_any(skb);
+}
+
+void b43legacy_handle_txstatus(struct b43legacy_wldev *dev,
+			     const struct b43legacy_txstatus *status)
+{
+	b43legacy_debugfs_log_txstat(dev, status);
+
+	if (status->intermediate)
+		return;
+	if (status->for_ampdu)
+		return;
+	if (!status->acked)
+		dev->wl->ieee_stats.dot11ACKFailureCount++;
+	if (status->rts_count) {
+		if (status->rts_count == 0xF) /* FIXME */
+			dev->wl->ieee_stats.dot11RTSFailureCount++;
+		else
+			dev->wl->ieee_stats.dot11RTSSuccessCount++;
+	}
+
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_handle_txstatus(dev, status);
+	else
+		b43legacy_dma_handle_txstatus(dev, status);
+}
+
+/* Handle TX status report as received through DMA/PIO queues */
+void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev,
+				 const struct b43legacy_hwtxstatus *hw)
+{
+	struct b43legacy_txstatus status;
+	u8 tmp;
+
+	status.cookie = le16_to_cpu(hw->cookie);
+	status.seq = le16_to_cpu(hw->seq);
+	status.phy_stat = hw->phy_stat;
+	tmp = hw->count;
+	status.frame_count = (tmp >> 4);
+	status.rts_count = (tmp & 0x0F);
+	tmp = hw->flags;
+	status.supp_reason = ((tmp & 0x1C) >> 2);
+	status.pm_indicated = !!(tmp & 0x80);
+	status.intermediate = !!(tmp & 0x40);
+	status.for_ampdu = !!(tmp & 0x20);
+	status.acked = !!(tmp & 0x02);
+
+	b43legacy_handle_txstatus(dev, &status);
+}
+
+/* Stop any TX operation on the device (suspend the hardware queues) */
+void b43legacy_tx_suspend(struct b43legacy_wldev *dev)
+{
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_freeze_txqueues(dev);
+	else
+		b43legacy_dma_tx_suspend(dev);
+}
+
+/* Resume any TX operation on the device (resume the hardware queues) */
+void b43legacy_tx_resume(struct b43legacy_wldev *dev)
+{
+	if (b43legacy_using_pio(dev))
+		b43legacy_pio_thaw_txqueues(dev);
+	else
+		b43legacy_dma_tx_resume(dev);
+}
+
+/* Initialize the QoS parameters */
+void b43legacy_qos_init(struct b43legacy_wldev *dev)
+{
+	/* FIXME: This function must probably be called from the mac80211
+	 * config callback. */
+return;
+
+	b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF);
+	/* FIXME kill magic */
+	b43legacy_write16(dev, 0x688,
+			  b43legacy_read16(dev, 0x688) | 0x4);
+
+
+	/*TODO: We might need some stack support here to get the values. */
+}