b43: move under broadcom vendor directory

Part of reorganising wireless drivers directory and Kconfig.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 947 insertions, 0 deletions

diff --git a/drivers/net/wireless/broadcom/b43/xmit.c b/drivers/net/wireless/broadcom/b43/xmit.c
new file mode 100644
index 000000000000..426dc13c44cd
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43/xmit.c
@@ -0,0 +1,947 @@
+/*
+
+  Broadcom B43 wireless driver
+
+  Transmission (TX/RX) related functions.
+
+  Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
+  Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
+  Copyright (C) 2005, 2006 Michael Buesch <m@bues.ch>
+  Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
+  Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
+
+  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 "xmit.h"
+#include "phy_common.h"
+#include "dma.h"
+#include "pio.h"
+
+static const struct b43_tx_legacy_rate_phy_ctl_entry b43_tx_legacy_rate_phy_ctl[] = {
+	{ B43_CCK_RATE_1MB,	0x0,			0x0 },
+	{ B43_CCK_RATE_2MB,	0x0,			0x1 },
+	{ B43_CCK_RATE_5MB,	0x0,			0x2 },
+	{ B43_CCK_RATE_11MB,	0x0,			0x3 },
+	{ B43_OFDM_RATE_6MB,	B43_TXH_PHY1_CRATE_1_2,	B43_TXH_PHY1_MODUL_BPSK },
+	{ B43_OFDM_RATE_9MB,	B43_TXH_PHY1_CRATE_3_4,	B43_TXH_PHY1_MODUL_BPSK },
+	{ B43_OFDM_RATE_12MB,	B43_TXH_PHY1_CRATE_1_2,	B43_TXH_PHY1_MODUL_QPSK },
+	{ B43_OFDM_RATE_18MB,	B43_TXH_PHY1_CRATE_3_4,	B43_TXH_PHY1_MODUL_QPSK },
+	{ B43_OFDM_RATE_24MB,	B43_TXH_PHY1_CRATE_1_2,	B43_TXH_PHY1_MODUL_QAM16 },
+	{ B43_OFDM_RATE_36MB,	B43_TXH_PHY1_CRATE_3_4,	B43_TXH_PHY1_MODUL_QAM16 },
+	{ B43_OFDM_RATE_48MB,	B43_TXH_PHY1_CRATE_2_3,	B43_TXH_PHY1_MODUL_QAM64 },
+	{ B43_OFDM_RATE_54MB,	B43_TXH_PHY1_CRATE_3_4,	B43_TXH_PHY1_MODUL_QAM64 },
+};
+
+static const struct b43_tx_legacy_rate_phy_ctl_entry *
+b43_tx_legacy_rate_phy_ctl_ent(u8 bitrate)
+{
+	const struct b43_tx_legacy_rate_phy_ctl_entry *e;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(b43_tx_legacy_rate_phy_ctl); i++) {
+		e = &(b43_tx_legacy_rate_phy_ctl[i]);
+		if (e->bitrate == bitrate)
+			return e;
+	}
+
+	B43_WARN_ON(1);
+	return NULL;
+}
+
+/* Extract the bitrate index out of a CCK PLCP header. */
+static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp)
+{
+	switch (plcp->raw[0]) {
+	case 0x0A:
+		return 0;
+	case 0x14:
+		return 1;
+	case 0x37:
+		return 2;
+	case 0x6E:
+		return 3;
+	}
+	return -1;
+}
+
+/* Extract the bitrate index out of an OFDM PLCP header. */
+static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool ghz5)
+{
+	/* For 2 GHz band first OFDM rate is at index 4, see main.c */
+	int base = ghz5 ? 0 : 4;
+
+	switch (plcp->raw[0] & 0xF) {
+	case 0xB:
+		return base + 0;
+	case 0xF:
+		return base + 1;
+	case 0xA:
+		return base + 2;
+	case 0xE:
+		return base + 3;
+	case 0x9:
+		return base + 4;
+	case 0xD:
+		return base + 5;
+	case 0x8:
+		return base + 6;
+	case 0xC:
+		return base + 7;
+	}
+	return -1;
+}
+
+u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_CCK_RATE_1MB:
+		return 0x0A;
+	case B43_CCK_RATE_2MB:
+		return 0x14;
+	case B43_CCK_RATE_5MB:
+		return 0x37;
+	case B43_CCK_RATE_11MB:
+		return 0x6E;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_OFDM_RATE_6MB:
+		return 0xB;
+	case B43_OFDM_RATE_9MB:
+		return 0xF;
+	case B43_OFDM_RATE_12MB:
+		return 0xA;
+	case B43_OFDM_RATE_18MB:
+		return 0xE;
+	case B43_OFDM_RATE_24MB:
+		return 0x9;
+	case B43_OFDM_RATE_36MB:
+		return 0xD;
+	case B43_OFDM_RATE_48MB:
+		return 0x8;
+	case B43_OFDM_RATE_54MB:
+		return 0xC;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
+			   const u16 octets, const u8 bitrate)
+{
+	__u8 *raw = plcp->raw;
+
+	if (b43_is_ofdm_rate(bitrate)) {
+		u32 d;
+
+		d = b43_plcp_get_ratecode_ofdm(bitrate);
+		B43_WARN_ON(octets & 0xF000);
+		d |= (octets << 5);
+		plcp->data = cpu_to_le32(d);
+	} else {
+		u32 plen;
+
+		plen = octets * 16 / bitrate;
+		if ((octets * 16 % bitrate) > 0) {
+			plen++;
+			if ((bitrate == B43_CCK_RATE_11MB)
+			    && ((octets * 8 % 11) < 4)) {
+				raw[1] = 0x84;
+			} else
+				raw[1] = 0x04;
+		} else
+			raw[1] = 0x04;
+		plcp->data |= cpu_to_le32(plen << 16);
+		raw[0] = b43_plcp_get_ratecode_cck(bitrate);
+	}
+}
+
+/* TODO: verify if needed for SSLPN or LCN  */
+static u16 b43_generate_tx_phy_ctl1(struct b43_wldev *dev, u8 bitrate)
+{
+	const struct b43_phy *phy = &dev->phy;
+	const struct b43_tx_legacy_rate_phy_ctl_entry *e;
+	u16 control = 0;
+	u16 bw;
+
+	if (phy->type == B43_PHYTYPE_LP)
+		bw = B43_TXH_PHY1_BW_20;
+	else /* FIXME */
+		bw = B43_TXH_PHY1_BW_20;
+
+	if (0) { /* FIXME: MIMO */
+	} else if (b43_is_cck_rate(bitrate) && phy->type != B43_PHYTYPE_LP) {
+		control = bw;
+	} else {
+		control = bw;
+		e = b43_tx_legacy_rate_phy_ctl_ent(bitrate);
+		if (e) {
+			control |= e->coding_rate;
+			control |= e->modulation;
+		}
+		control |= B43_TXH_PHY1_MODE_SISO;
+	}
+
+	return control;
+}
+
+static u8 b43_calc_fallback_rate(u8 bitrate)
+{
+	switch (bitrate) {
+	case B43_CCK_RATE_1MB:
+		return B43_CCK_RATE_1MB;
+	case B43_CCK_RATE_2MB:
+		return B43_CCK_RATE_1MB;
+	case B43_CCK_RATE_5MB:
+		return B43_CCK_RATE_2MB;
+	case B43_CCK_RATE_11MB:
+		return B43_CCK_RATE_5MB;
+	case B43_OFDM_RATE_6MB:
+		return B43_CCK_RATE_5MB;
+	case B43_OFDM_RATE_9MB:
+		return B43_OFDM_RATE_6MB;
+	case B43_OFDM_RATE_12MB:
+		return B43_OFDM_RATE_9MB;
+	case B43_OFDM_RATE_18MB:
+		return B43_OFDM_RATE_12MB;
+	case B43_OFDM_RATE_24MB:
+		return B43_OFDM_RATE_18MB;
+	case B43_OFDM_RATE_36MB:
+		return B43_OFDM_RATE_24MB;
+	case B43_OFDM_RATE_48MB:
+		return B43_OFDM_RATE_36MB;
+	case B43_OFDM_RATE_54MB:
+		return B43_OFDM_RATE_48MB;
+	}
+	B43_WARN_ON(1);
+	return 0;
+}
+
+/* Generate a TX data header. */
+int b43_generate_txhdr(struct b43_wldev *dev,
+		       u8 *_txhdr,
+		       struct sk_buff *skb_frag,
+		       struct ieee80211_tx_info *info,
+		       u16 cookie)
+{
+	const unsigned char *fragment_data = skb_frag->data;
+	unsigned int fragment_len = skb_frag->len;
+	struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
+	const struct b43_phy *phy = &dev->phy;
+	const struct ieee80211_hdr *wlhdr =
+	    (const struct ieee80211_hdr *)fragment_data;
+	int use_encryption = !!info->control.hw_key;
+	__le16 fctl = wlhdr->frame_control;
+	struct ieee80211_rate *fbrate;
+	u8 rate, rate_fb;
+	int rate_ofdm, rate_fb_ofdm;
+	unsigned int plcp_fragment_len;
+	u32 mac_ctl = 0;
+	u16 phy_ctl = 0;
+	bool fill_phy_ctl1 = (phy->type == B43_PHYTYPE_LP ||
+			      phy->type == B43_PHYTYPE_N ||
+			      phy->type == B43_PHYTYPE_HT);
+	u8 extra_ft = 0;
+	struct ieee80211_rate *txrate;
+	struct ieee80211_tx_rate *rates;
+
+	memset(txhdr, 0, sizeof(*txhdr));
+
+	txrate = ieee80211_get_tx_rate(dev->wl->hw, info);
+	rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB;
+	rate_ofdm = b43_is_ofdm_rate(rate);
+	fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : txrate;
+	rate_fb = fbrate->hw_value;
+	rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
+
+	if (rate_ofdm)
+		txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
+	else
+		txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
+	txhdr->mac_frame_ctl = wlhdr->frame_control;
+	memcpy(txhdr->tx_receiver, wlhdr->addr1, ETH_ALEN);
+
+	/* 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 {
+		txhdr->dur_fb = ieee80211_generic_frame_duration(
+			dev->wl->hw, info->control.vif, info->band,
+			fragment_len, fbrate);
+	}
+
+	plcp_fragment_len = fragment_len + FCS_LEN;
+	if (use_encryption) {
+		u8 key_idx = info->control.hw_key->hw_key_idx;
+		struct b43_key *key;
+		int wlhdr_len;
+		size_t iv_len;
+
+		B43_WARN_ON(key_idx >= ARRAY_SIZE(dev->key));
+		key = &(dev->key[key_idx]);
+
+		if (unlikely(!key->keyconf)) {
+			/* This key is invalid. This might only happen
+			 * in a short timeframe after machine resume before
+			 * we were able to reconfigure keys.
+			 * Drop this packet completely. Do not transmit it
+			 * unencrypted to avoid leaking information. */
+			return -ENOKEY;
+		}
+
+		/* Hardware appends ICV. */
+		plcp_fragment_len += info->control.hw_key->icv_len;
+
+		key_idx = b43_kidx_to_fw(dev, key_idx);
+		mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
+			   B43_TXH_MAC_KEYIDX;
+		mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
+			   B43_TXH_MAC_KEYALG;
+		wlhdr_len = ieee80211_hdrlen(fctl);
+		if (key->algorithm == B43_SEC_ALGO_TKIP) {
+			u16 phase1key[5];
+			int i;
+			/* we give the phase1key and iv16 here, the key is stored in
+			 * shm. With that the hardware can do phase 2 and encryption.
+			 */
+			ieee80211_get_tkip_p1k(info->control.hw_key, skb_frag, phase1key);
+			/* phase1key is in host endian. Copy to little-endian txhdr->iv. */
+			for (i = 0; i < 5; i++) {
+				txhdr->iv[i * 2 + 0] = phase1key[i];
+				txhdr->iv[i * 2 + 1] = phase1key[i] >> 8;
+			}
+			/* iv16 */
+			memcpy(txhdr->iv + 10, ((u8 *) wlhdr) + wlhdr_len, 3);
+		} else {
+			iv_len = min_t(size_t, info->control.hw_key->iv_len,
+				     ARRAY_SIZE(txhdr->iv));
+			memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
+		}
+	}
+	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_598.plcp),
+				      plcp_fragment_len, rate);
+		break;
+	case B43_FW_HDR_351:
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_351.plcp),
+				      plcp_fragment_len, rate);
+		break;
+	case B43_FW_HDR_410:
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->format_410.plcp),
+				      plcp_fragment_len, rate);
+		break;
+	}
+	b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
+			      plcp_fragment_len, rate_fb);
+
+	/* Extra Frame Types */
+	if (rate_fb_ofdm)
+		extra_ft |= B43_TXH_EFT_FB_OFDM;
+	else
+		extra_ft |= B43_TXH_EFT_FB_CCK;
+
+	/* Set channel radio code. Note that the micrcode ORs 0x100 to
+	 * this value before comparing it to the value in SHM, if this
+	 * is a 5Ghz packet.
+	 */
+	txhdr->chan_radio_code = phy->channel;
+
+	/* PHY TX Control word */
+	if (rate_ofdm)
+		phy_ctl |= B43_TXH_PHY_ENC_OFDM;
+	else
+		phy_ctl |= B43_TXH_PHY_ENC_CCK;
+	if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+		phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
+
+	switch (b43_ieee80211_antenna_sanitize(dev, 0)) {
+	case 0: /* Default */
+		phy_ctl |= B43_TXH_PHY_ANT01AUTO;
+		break;
+	case 1: /* Antenna 0 */
+		phy_ctl |= B43_TXH_PHY_ANT0;
+		break;
+	case 2: /* Antenna 1 */
+		phy_ctl |= B43_TXH_PHY_ANT1;
+		break;
+	case 3: /* Antenna 2 */
+		phy_ctl |= B43_TXH_PHY_ANT2;
+		break;
+	case 4: /* Antenna 3 */
+		phy_ctl |= B43_TXH_PHY_ANT3;
+		break;
+	default:
+		B43_WARN_ON(1);
+	}
+
+	rates = info->control.rates;
+	/* MAC control */
+	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
+		mac_ctl |= B43_TXH_MAC_ACK;
+	/* use hardware sequence counter as the non-TID counter */
+	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
+		mac_ctl |= B43_TXH_MAC_HWSEQ;
+	if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+		mac_ctl |= B43_TXH_MAC_STMSDU;
+	if (!phy->gmode)
+		mac_ctl |= B43_TXH_MAC_5GHZ;
+
+	/* Overwrite rates[0].count to make the retry calculation
+	 * in the tx status easier. need the actual retry limit to
+	 * detect whether the fallback rate was used.
+	 */
+	if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+	    (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
+		rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
+		mac_ctl |= B43_TXH_MAC_LONGFRAME;
+	} else {
+		rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
+	}
+
+	/* Generate the RTS or CTS-to-self frame */
+	if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+	    (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
+		unsigned int len;
+		struct ieee80211_hdr *uninitialized_var(hdr);
+		int rts_rate, rts_rate_fb;
+		int rts_rate_ofdm, rts_rate_fb_ofdm;
+		struct b43_plcp_hdr6 *uninitialized_var(plcp);
+		struct ieee80211_rate *rts_cts_rate;
+
+		rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info);
+
+		rts_rate = rts_cts_rate ? rts_cts_rate->hw_value : B43_CCK_RATE_1MB;
+		rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
+		rts_rate_fb = b43_calc_fallback_rate(rts_rate);
+		rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
+
+		if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
+			struct ieee80211_cts *uninitialized_var(cts);
+
+			switch (dev->fw.hdr_format) {
+			case B43_FW_HDR_598:
+				cts = (struct ieee80211_cts *)
+					(txhdr->format_598.rts_frame);
+				break;
+			case B43_FW_HDR_351:
+				cts = (struct ieee80211_cts *)
+					(txhdr->format_351.rts_frame);
+				break;
+			case B43_FW_HDR_410:
+				cts = (struct ieee80211_cts *)
+					(txhdr->format_410.rts_frame);
+				break;
+			}
+			ieee80211_ctstoself_get(dev->wl->hw, info->control.vif,
+						fragment_data, fragment_len,
+						info, cts);
+			mac_ctl |= B43_TXH_MAC_SENDCTS;
+			len = sizeof(struct ieee80211_cts);
+		} else {
+			struct ieee80211_rts *uninitialized_var(rts);
+
+			switch (dev->fw.hdr_format) {
+			case B43_FW_HDR_598:
+				rts = (struct ieee80211_rts *)
+					(txhdr->format_598.rts_frame);
+				break;
+			case B43_FW_HDR_351:
+				rts = (struct ieee80211_rts *)
+					(txhdr->format_351.rts_frame);
+				break;
+			case B43_FW_HDR_410:
+				rts = (struct ieee80211_rts *)
+					(txhdr->format_410.rts_frame);
+				break;
+			}
+			ieee80211_rts_get(dev->wl->hw, info->control.vif,
+					  fragment_data, fragment_len,
+					  info, rts);
+			mac_ctl |= B43_TXH_MAC_SENDRTS;
+			len = sizeof(struct ieee80211_rts);
+		}
+		len += FCS_LEN;
+
+		/* Generate the PLCP headers for the RTS/CTS frame */
+		switch (dev->fw.hdr_format) {
+		case B43_FW_HDR_598:
+			plcp = &txhdr->format_598.rts_plcp;
+			break;
+		case B43_FW_HDR_351:
+			plcp = &txhdr->format_351.rts_plcp;
+			break;
+		case B43_FW_HDR_410:
+			plcp = &txhdr->format_410.rts_plcp;
+			break;
+		}
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
+				      len, rts_rate);
+		plcp = &txhdr->rts_plcp_fb;
+		b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
+				      len, rts_rate_fb);
+
+		switch (dev->fw.hdr_format) {
+		case B43_FW_HDR_598:
+			hdr = (struct ieee80211_hdr *)
+				(&txhdr->format_598.rts_frame);
+			break;
+		case B43_FW_HDR_351:
+			hdr = (struct ieee80211_hdr *)
+				(&txhdr->format_351.rts_frame);
+			break;
+		case B43_FW_HDR_410:
+			hdr = (struct ieee80211_hdr *)
+				(&txhdr->format_410.rts_frame);
+			break;
+		}
+		txhdr->rts_dur_fb = hdr->duration_id;
+
+		if (rts_rate_ofdm) {
+			extra_ft |= B43_TXH_EFT_RTS_OFDM;
+			txhdr->phy_rate_rts =
+			    b43_plcp_get_ratecode_ofdm(rts_rate);
+		} else {
+			extra_ft |= B43_TXH_EFT_RTS_CCK;
+			txhdr->phy_rate_rts =
+			    b43_plcp_get_ratecode_cck(rts_rate);
+		}
+		if (rts_rate_fb_ofdm)
+			extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
+		else
+			extra_ft |= B43_TXH_EFT_RTSFB_CCK;
+
+		if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS &&
+		    fill_phy_ctl1) {
+			txhdr->phy_ctl1_rts = cpu_to_le16(
+				b43_generate_tx_phy_ctl1(dev, rts_rate));
+			txhdr->phy_ctl1_rts_fb = cpu_to_le16(
+				b43_generate_tx_phy_ctl1(dev, rts_rate_fb));
+		}
+	}
+
+	/* Magic cookie */
+	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		txhdr->format_598.cookie = cpu_to_le16(cookie);
+		break;
+	case B43_FW_HDR_351:
+		txhdr->format_351.cookie = cpu_to_le16(cookie);
+		break;
+	case B43_FW_HDR_410:
+		txhdr->format_410.cookie = cpu_to_le16(cookie);
+		break;
+	}
+
+	if (fill_phy_ctl1) {
+		txhdr->phy_ctl1 =
+			cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate));
+		txhdr->phy_ctl1_fb =
+			cpu_to_le16(b43_generate_tx_phy_ctl1(dev, rate_fb));
+	}
+
+	/* Apply the bitfields */
+	txhdr->mac_ctl = cpu_to_le32(mac_ctl);
+	txhdr->phy_ctl = cpu_to_le16(phy_ctl);
+	txhdr->extra_ft = extra_ft;
+
+	return 0;
+}
+
+static s8 b43_rssi_postprocess(struct b43_wldev *dev,
+			       u8 in_rssi, int ofdm,
+			       int adjust_2053, int adjust_2050)
+{
+	struct b43_phy *phy = &dev->phy;
+	struct b43_phy_g *gphy = phy->g;
+	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->
+			    boardflags_lo & B43_BFL_RSSI) {
+				if (in_rssi > 63)
+					in_rssi = 63;
+				B43_WARN_ON(phy->type != B43_PHYTYPE_G);
+				tmp = gphy->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 == B43_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;
+}
+
+//TODO
+#if 0
+static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
+{
+	struct b43_phy *phy = &dev->phy;
+	s8 ret;
+
+	if (phy->type == B43_PHYTYPE_A) {
+		//TODO: Incomplete specs.
+		ret = 0;
+	} else
+		ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
+
+	return ret;
+}
+#endif
+
+void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
+{
+	struct ieee80211_rx_status status;
+	struct b43_plcp_hdr6 *plcp;
+	struct ieee80211_hdr *wlhdr;
+	const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
+	__le16 fctl;
+	u16 phystat0, phystat3;
+	u16 uninitialized_var(chanstat), uninitialized_var(mactime);
+	u32 uninitialized_var(macstat);
+	u16 chanid;
+	u16 phytype;
+	int padding, rate_idx;
+
+	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);
+	switch (dev->fw.hdr_format) {
+	case B43_FW_HDR_598:
+		macstat = le32_to_cpu(rxhdr->format_598.mac_status);
+		mactime = le16_to_cpu(rxhdr->format_598.mac_time);
+		chanstat = le16_to_cpu(rxhdr->format_598.channel);
+		break;
+	case B43_FW_HDR_410:
+	case B43_FW_HDR_351:
+		macstat = le32_to_cpu(rxhdr->format_351.mac_status);
+		mactime = le16_to_cpu(rxhdr->format_351.mac_time);
+		chanstat = le16_to_cpu(rxhdr->format_351.channel);
+		break;
+	}
+	phytype = chanstat & B43_RX_CHAN_PHYTYPE;
+
+	if (unlikely(macstat & B43_RX_MAC_FCSERR)) {
+		dev->wl->ieee_stats.dot11FCSErrorCount++;
+		status.flag |= RX_FLAG_FAILED_FCS_CRC;
+	}
+	if (unlikely(phystat0 & (B43_RX_PHYST0_PLCPHCF | B43_RX_PHYST0_PLCPFV)))
+		status.flag |= RX_FLAG_FAILED_PLCP_CRC;
+	if (phystat0 & B43_RX_PHYST0_SHORTPRMBL)
+		status.flag |= RX_FLAG_SHORTPRE;
+	if (macstat & B43_RX_MAC_DECERR) {
+		/* Decryption with the given key failed.
+		 * Drop the packet. We also won't be able to decrypt it with
+		 * the key in software. */
+		goto drop;
+	}
+
+	/* Skip PLCP and padding */
+	padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
+	if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
+		b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
+		goto drop;
+	}
+	plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
+	skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
+	/* The skb contains the Wireless Header + payload data now */
+	if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */  + FCS_LEN))) {
+		b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
+		goto drop;
+	}
+	wlhdr = (struct ieee80211_hdr *)(skb->data);
+	fctl = wlhdr->frame_control;
+
+	if (macstat & B43_RX_MAC_DEC) {
+		unsigned int keyidx;
+		int wlhdr_len;
+
+		keyidx = ((macstat & B43_RX_MAC_KEYIDX)
+			  >> B43_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 = b43_kidx_to_raw(dev, keyidx);
+		B43_WARN_ON(keyidx >= ARRAY_SIZE(dev->key));
+
+		if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
+			wlhdr_len = ieee80211_hdrlen(fctl);
+			if (unlikely(skb->len < (wlhdr_len + 3))) {
+				b43dbg(dev->wl,
+				       "RX: Packet size underrun (3)\n");
+				goto drop;
+			}
+			status.flag |= RX_FLAG_DECRYPTED;
+		}
+	}
+
+	/* Link quality statistics */
+	switch (chanstat & B43_RX_CHAN_PHYTYPE) {
+	case B43_PHYTYPE_HT:
+		/* TODO: is max the right choice? */
+		status.signal = max_t(__s8,
+			max(rxhdr->phy_ht_power0, rxhdr->phy_ht_power1),
+			rxhdr->phy_ht_power2);
+		break;
+	case B43_PHYTYPE_N:
+		/* Broadcom has code for min and avg, but always uses max */
+		if (rxhdr->power0 == 16 || rxhdr->power0 == 32)
+			status.signal = max(rxhdr->power1, rxhdr->power2);
+		else
+			status.signal = max(rxhdr->power0, rxhdr->power1);
+		break;
+	case B43_PHYTYPE_A:
+	case B43_PHYTYPE_B:
+	case B43_PHYTYPE_G:
+	case B43_PHYTYPE_LP:
+		status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
+						  (phystat0 & B43_RX_PHYST0_OFDM),
+						  (phystat0 & B43_RX_PHYST0_GAINCTL),
+						  (phystat3 & B43_RX_PHYST3_TRSTATE));
+		break;
+	}
+
+	if (phystat0 & B43_RX_PHYST0_OFDM)
+		rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
+					!!(chanstat & B43_RX_CHAN_5GHZ));
+	else
+		rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
+	if (unlikely(rate_idx == -1)) {
+		/* PLCP seems to be corrupted.
+		 * Drop the frame, if we are not interested in corrupted frames. */
+		if (!(dev->wl->filter_flags & FIF_PLCPFAIL))
+			goto drop;
+	}
+	status.rate_idx = rate_idx;
+	status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
+
+	/*
+	 * All frames on monitor interfaces and beacons always need a full
+	 * 64-bit timestamp. Monitor interfaces need it for diagnostic
+	 * purposes and beacons for IBSS merging.
+	 * This code assumes we get to process the packet within 16 bits
+	 * of timestamp, i.e. about 65 milliseconds after the PHY received
+	 * the first symbol.
+	 */
+	if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) {
+		u16 low_mactime_now;
+
+		b43_tsf_read(dev, &status.mactime);
+		low_mactime_now = status.mactime;
+		status.mactime = status.mactime & ~0xFFFFULL;
+		status.mactime += mactime;
+		if (low_mactime_now <= mactime)
+			status.mactime -= 0x10000;
+		status.flag |= RX_FLAG_MACTIME_START;
+	}
+
+	chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
+	switch (chanstat & B43_RX_CHAN_PHYTYPE) {
+	case B43_PHYTYPE_A:
+		status.band = IEEE80211_BAND_5GHZ;
+		B43_WARN_ON(1);
+		/* FIXME: We don't really know which value the "chanid" contains.
+		 *        So the following assignment might be wrong. */
+		status.freq =
+			ieee80211_channel_to_frequency(chanid, status.band);
+		break;
+	case B43_PHYTYPE_G:
+		status.band = IEEE80211_BAND_2GHZ;
+		/* Somewhere between 478.104 and 508.1084 firmware for G-PHY
+		 * has been modified to be compatible with N-PHY and others.
+		 */
+		if (dev->fw.rev >= 508)
+			status.freq = ieee80211_channel_to_frequency(chanid, status.band);
+		else
+			status.freq = chanid + 2400;
+		break;
+	case B43_PHYTYPE_N:
+	case B43_PHYTYPE_LP:
+	case B43_PHYTYPE_HT:
+		/* chanid is the SHM channel cookie. Which is the plain
+		 * channel number in b43. */
+		if (chanstat & B43_RX_CHAN_5GHZ)
+			status.band = IEEE80211_BAND_5GHZ;
+		else
+			status.band = IEEE80211_BAND_2GHZ;
+		status.freq =
+			ieee80211_channel_to_frequency(chanid, status.band);
+		break;
+	default:
+		B43_WARN_ON(1);
+		goto drop;
+	}
+
+	memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
+	ieee80211_rx_ni(dev->wl->hw, skb);
+
+#if B43_DEBUG
+	dev->rx_count++;
+#endif
+	return;
+drop:
+	dev_kfree_skb_any(skb);
+}
+
+void b43_handle_txstatus(struct b43_wldev *dev,
+			 const struct b43_txstatus *status)
+{
+	b43_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 (b43_using_pio_transfers(dev))
+		b43_pio_handle_txstatus(dev, status);
+	else
+		b43_dma_handle_txstatus(dev, status);
+
+	b43_phy_txpower_check(dev, 0);
+}
+
+/* Fill out the mac80211 TXstatus report based on the b43-specific
+ * txstatus report data. This returns a boolean whether the frame was
+ * successfully transmitted. */
+bool b43_fill_txstatus_report(struct b43_wldev *dev,
+			      struct ieee80211_tx_info *report,
+			      const struct b43_txstatus *status)
+{
+	bool frame_success = true;
+	int retry_limit;
+
+	/* preserve the confiured retry limit before clearing the status
+	 * The xmit function has overwritten the rc's value with the actual
+	 * retry limit done by the hardware */
+	retry_limit = report->status.rates[0].count;
+	ieee80211_tx_info_clear_status(report);
+
+	if (status->acked) {
+		/* The frame was ACKed. */
+		report->flags |= IEEE80211_TX_STAT_ACK;
+	} else {
+		/* The frame was not ACKed... */
+		if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) {
+			/* ...but we expected an ACK. */
+			frame_success = false;
+		}
+	}
+	if (status->frame_count == 0) {
+		/* The frame was not transmitted at all. */
+		report->status.rates[0].count = 0;
+	} else if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
+		/*
+		 * If the short retries (RTS, not data frame) have exceeded
+		 * the limit, the hw will not have tried the selected rate,
+		 * but will have used the fallback rate instead.
+		 * Don't let the rate control count attempts for the selected
+		 * rate in this case, otherwise the statistics will be off.
+		 */
+		report->status.rates[0].count = 0;
+		report->status.rates[1].count = status->frame_count;
+	} else {
+		if (status->frame_count > retry_limit) {
+			report->status.rates[0].count = retry_limit;
+			report->status.rates[1].count = status->frame_count -
+					retry_limit;
+
+		} else {
+			report->status.rates[0].count = status->frame_count;
+			report->status.rates[1].idx = -1;
+		}
+	}
+
+	return frame_success;
+}
+
+/* Stop any TX operation on the device (suspend the hardware queues) */
+void b43_tx_suspend(struct b43_wldev *dev)
+{
+	if (b43_using_pio_transfers(dev))
+		b43_pio_tx_suspend(dev);
+	else
+		b43_dma_tx_suspend(dev);
+}
+
+/* Resume any TX operation on the device (resume the hardware queues) */
+void b43_tx_resume(struct b43_wldev *dev)
+{
+	if (b43_using_pio_transfers(dev))
+		b43_pio_tx_resume(dev);
+	else
+		b43_dma_tx_resume(dev);
+}