1 files changed, 438 insertions, 0 deletions

diff --git a/freebsd/sys/dev/rtwn/rtl8812a/r12a_tx.c b/freebsd/sys/dev/rtwn/rtl8812a/r12a_tx.c
new file mode 100644
index 00000000..f7bd3a8e
--- /dev/null
+++ b/freebsd/sys/dev/rtwn/rtl8812a/r12a_tx.c
@@ -0,0 +1,438 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/local/opt_wlan.h>
+
+#include <rtems/bsd/sys/param.h>
+#include <rtems/bsd/sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/mbuf.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/queue.h>
+#include <sys/taskqueue.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/linker.h>
+
+#include <net/if.h>
+#include <net/ethernet.h>
+#include <net/if_media.h>
+
+#include <net80211/ieee80211_var.h>
+#include <net80211/ieee80211_radiotap.h>
+
+#include <dev/rtwn/if_rtwnreg.h>
+#include <dev/rtwn/if_rtwnvar.h>
+
+#include <dev/rtwn/if_rtwn_ridx.h>
+
+#include <dev/rtwn/rtl8812a/r12a.h>
+#include <dev/rtwn/rtl8812a/r12a_tx_desc.h>
+
+
+static int
+r12a_get_primary_channel(struct rtwn_softc *sc, struct ieee80211_channel *c)
+{
+	/* XXX 80 MHz */
+	if (IEEE80211_IS_CHAN_HT40U(c))
+		return (R12A_TXDW5_PRIM_CHAN_20_80_2);
+	else
+		return (R12A_TXDW5_PRIM_CHAN_20_80_3);
+}
+
+static void
+r12a_tx_set_ht40(struct rtwn_softc *sc, void *buf, struct ieee80211_node *ni)
+{
+	struct r12a_tx_desc *txd = (struct r12a_tx_desc *)buf;
+
+	/* XXX 80 Mhz */
+	if (ni->ni_chan != IEEE80211_CHAN_ANYC &&
+	    IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
+		int prim_chan;
+
+		prim_chan = r12a_get_primary_channel(sc, ni->ni_chan);
+		txd->txdw5 |= htole32(SM(R12A_TXDW5_DATA_BW,
+		    R12A_TXDW5_DATA_BW40));
+		txd->txdw5 |= htole32(SM(R12A_TXDW5_DATA_PRIM_CHAN,
+		    prim_chan));
+	}
+}
+
+static void
+r12a_tx_protection(struct rtwn_softc *sc, struct r12a_tx_desc *txd,
+    enum ieee80211_protmode mode, uint8_t ridx)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	uint8_t rate;
+
+	switch (mode) {
+	case IEEE80211_PROT_CTSONLY:
+		txd->txdw3 |= htole32(R12A_TXDW3_CTS2SELF);
+		break;
+	case IEEE80211_PROT_RTSCTS:
+		txd->txdw3 |= htole32(R12A_TXDW3_RTSEN);
+		break;
+	default:
+		break;
+	}
+
+	if (mode == IEEE80211_PROT_CTSONLY ||
+	    mode == IEEE80211_PROT_RTSCTS) {
+		if (ridx >= RTWN_RIDX_MCS(0))
+			rate = rtwn_ctl_mcsrate(ic->ic_rt, ridx);
+		else
+			rate = ieee80211_ctl_rate(ic->ic_rt, ridx2rate[ridx]);
+		ridx = rate2ridx(rate);
+
+		txd->txdw4 |= htole32(SM(R12A_TXDW4_RTSRATE, ridx));
+		/* RTS rate fallback limit (max). */
+		txd->txdw4 |= htole32(SM(R12A_TXDW4_RTSRATE_FB_LMT, 0xf));
+
+		if (RTWN_RATE_IS_CCK(ridx) && ridx != RTWN_RIDX_CCK1 &&
+		    (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
+			txd->txdw5 |= htole32(R12A_TXDW5_RTS_SHORT);
+	}
+}
+
+static void
+r12a_tx_raid(struct rtwn_softc *sc, struct r12a_tx_desc *txd,
+    struct ieee80211_node *ni, int ismcast)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ieee80211_channel *chan;
+	enum ieee80211_phymode mode;
+	uint8_t raid;
+
+	chan = (ni->ni_chan != IEEE80211_CHAN_ANYC) ?
+		ni->ni_chan : ic->ic_curchan;
+	mode = ieee80211_chan2mode(chan);
+
+	/* NB: group addressed frames are done at 11bg rates for now */
+	if (ismcast || !(ni->ni_flags & IEEE80211_NODE_HT)) {
+		switch (mode) {
+		case IEEE80211_MODE_11A:
+		case IEEE80211_MODE_11B:
+		case IEEE80211_MODE_11G:
+			break;
+		case IEEE80211_MODE_11NA:
+			mode = IEEE80211_MODE_11A;
+			break;
+		case IEEE80211_MODE_11NG:
+			mode = IEEE80211_MODE_11G;
+			break;
+		default:
+			device_printf(sc->sc_dev, "unknown mode(1) %d!\n",
+			    ic->ic_curmode);
+			return;
+		}
+	}
+
+	switch (mode) {
+	case IEEE80211_MODE_11A:
+		raid = R12A_RAID_11G;
+		break;
+	case IEEE80211_MODE_11B:
+		raid = R12A_RAID_11B;
+		break;
+	case IEEE80211_MODE_11G:
+		if (vap->iv_flags & IEEE80211_F_PUREG)
+			raid = R12A_RAID_11G;
+		else
+			raid = R12A_RAID_11BG;
+		break;
+	case IEEE80211_MODE_11NA:
+		if (sc->ntxchains == 1)
+			raid = R12A_RAID_11GN_1;
+		else
+			raid = R12A_RAID_11GN_2;
+		break;
+	case IEEE80211_MODE_11NG:
+		if (sc->ntxchains == 1) {
+			if (IEEE80211_IS_CHAN_HT40(chan))
+				raid = R12A_RAID_11BGN_1_40;
+			else
+				raid = R12A_RAID_11BGN_1;
+		} else {
+			if (IEEE80211_IS_CHAN_HT40(chan))
+				raid = R12A_RAID_11BGN_2_40;
+			else
+				raid = R12A_RAID_11BGN_2;
+		}
+		break;
+	default:
+		/* TODO: 80 MHz / 11ac */
+		device_printf(sc->sc_dev, "unknown mode(2) %d!\n", mode);
+		return;
+	}
+
+	txd->txdw1 |= htole32(SM(R12A_TXDW1_RAID, raid));
+}
+
+static void
+r12a_tx_set_sgi(struct rtwn_softc *sc, void *buf, struct ieee80211_node *ni)
+{
+	struct r12a_tx_desc *txd = (struct r12a_tx_desc *)buf;
+	struct ieee80211vap *vap = ni->ni_vap;
+
+	if ((vap->iv_flags_ht & IEEE80211_FHT_SHORTGI20) &&	/* HT20 */
+	    (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20))
+		txd->txdw5 |= htole32(R12A_TXDW5_DATA_SHORT);
+	else if (ni->ni_chan != IEEE80211_CHAN_ANYC &&		/* HT40 */
+	    IEEE80211_IS_CHAN_HT40(ni->ni_chan) &&
+	    (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40) &&
+	    (vap->iv_flags_ht & IEEE80211_FHT_SHORTGI40))
+		txd->txdw5 |= htole32(R12A_TXDW5_DATA_SHORT);
+}
+
+void
+r12a_fill_tx_desc(struct rtwn_softc *sc, struct ieee80211_node *ni,
+    struct mbuf *m, void *buf, uint8_t ridx, int maxretry)
+{
+	struct ieee80211com *ic = &sc->sc_ic;
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct rtwn_vap *uvp = RTWN_VAP(vap);
+	struct ieee80211_frame *wh;
+	struct r12a_tx_desc *txd;
+	enum ieee80211_protmode prot;
+	uint8_t type, tid, qos, qsel;
+	int hasqos, ismcast, macid;
+
+	wh = mtod(m, struct ieee80211_frame *);
+	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
+	hasqos = IEEE80211_QOS_HAS_SEQ(wh);
+	ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
+
+	/* Select TX ring for this frame. */
+	if (hasqos) {
+		qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
+		tid = qos & IEEE80211_QOS_TID;
+	} else {
+		qos = 0;
+		tid = 0;
+	}
+
+	/* Fill Tx descriptor. */
+	txd = (struct r12a_tx_desc *)buf;
+	txd->flags0 |= R12A_FLAGS0_LSG | R12A_FLAGS0_FSG;
+	if (ismcast)
+		txd->flags0 |= R12A_FLAGS0_BMCAST;
+
+	if (!ismcast) {
+		/* Unicast frame, check if an ACK is expected. */
+		if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) !=
+		    IEEE80211_QOS_ACKPOLICY_NOACK) {
+			txd->txdw4 = htole32(R12A_TXDW4_RETRY_LMT_ENA);
+			txd->txdw4 |= htole32(SM(R12A_TXDW4_RETRY_LMT,
+			    maxretry));
+		}
+
+		struct rtwn_node *un = RTWN_NODE(ni);
+		macid = un->id;
+
+		if (type == IEEE80211_FC0_TYPE_DATA) {
+			qsel = tid % RTWN_MAX_TID;
+
+			if (m->m_flags & M_AMPDU_MPDU) {
+				txd->txdw2 |= htole32(R12A_TXDW2_AGGEN);
+				txd->txdw2 |= htole32(SM(R12A_TXDW2_AMPDU_DEN,
+				    vap->iv_ampdu_density));
+				txd->txdw3 |= htole32(SM(R12A_TXDW3_MAX_AGG,
+				    0x1f));	/* XXX */
+			} else
+				txd->txdw2 |= htole32(R12A_TXDW2_AGGBK);
+
+			if (sc->sc_ratectl == RTWN_RATECTL_NET80211) {
+				txd->txdw2 |= htole32(R12A_TXDW2_SPE_RPT);
+				sc->sc_tx_n_active++;
+			}
+
+			if (RTWN_RATE_IS_CCK(ridx) && ridx != RTWN_RIDX_CCK1 &&
+			    (ic->ic_flags & IEEE80211_F_SHPREAMBLE))
+				txd->txdw5 |= htole32(R12A_TXDW5_DATA_SHORT);
+
+			prot = IEEE80211_PROT_NONE;
+			if (ridx >= RTWN_RIDX_MCS(0)) {
+				r12a_tx_set_ht40(sc, txd, ni);
+				r12a_tx_set_sgi(sc, txd, ni);
+				prot = ic->ic_htprotmode;
+			} else if (ic->ic_flags & IEEE80211_F_USEPROT)
+				prot = ic->ic_protmode;
+
+			/* XXX fix last comparison for A-MSDU (in net80211) */
+			/* XXX A-MPDU? */
+			if (m->m_pkthdr.len + IEEE80211_CRC_LEN >
+			    vap->iv_rtsthreshold &&
+			    vap->iv_rtsthreshold != IEEE80211_RTS_MAX)
+				prot = IEEE80211_PROT_RTSCTS;
+
+			if (prot != IEEE80211_PROT_NONE)
+				r12a_tx_protection(sc, txd, prot, ridx);
+		} else	/* IEEE80211_FC0_TYPE_MGT */
+			qsel = R12A_TXDW1_QSEL_MGNT;
+	} else {
+		macid = RTWN_MACID_BC;
+		qsel = R12A_TXDW1_QSEL_MGNT;
+	}
+
+	txd->txdw1 |= htole32(SM(R12A_TXDW1_QSEL, qsel));
+	txd->txdw1 |= htole32(SM(R12A_TXDW1_MACID, macid));
+	txd->txdw4 |= htole32(SM(R12A_TXDW4_DATARATE, ridx));
+	/* Data rate fallback limit (max). */
+	txd->txdw4 |= htole32(SM(R12A_TXDW4_DATARATE_FB_LMT, 0x1f));
+	/* XXX recheck for non-21au */
+	txd->txdw6 |= htole32(SM(R21A_TXDW6_MBSSID, uvp->id));
+	r12a_tx_raid(sc, txd, ni, ismcast);
+
+	/* Force this rate if needed. */
+	if (sc->sc_ratectl != RTWN_RATECTL_FW)
+		txd->txdw3 |= htole32(R12A_TXDW3_DRVRATE);
+
+	if (!hasqos) {
+		/* Use HW sequence numbering for non-QoS frames. */
+		txd->txdw8 |= htole32(R12A_TXDW8_HWSEQ_EN);
+		txd->txdw3 |= htole32(SM(R12A_TXDW3_SEQ_SEL, uvp->id));
+	} else {
+		uint16_t seqno;
+
+		if (m->m_flags & M_AMPDU_MPDU) {
+			seqno = ni->ni_txseqs[tid];
+			/* NB: clear Fragment Number field. */
+			*(uint16_t *)wh->i_seq = 0;
+			ni->ni_txseqs[tid]++;
+		} else
+			seqno = M_SEQNO_GET(m) % IEEE80211_SEQ_RANGE;
+
+		/* Set sequence number. */
+		txd->txdw9 |= htole32(SM(R12A_TXDW9_SEQ, seqno));
+	}
+}
+
+void
+r12a_fill_tx_desc_raw(struct rtwn_softc *sc, struct ieee80211_node *ni,
+    struct mbuf *m, void *buf, const struct ieee80211_bpf_params *params)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct rtwn_vap *uvp = RTWN_VAP(vap);
+	struct ieee80211_frame *wh;
+	struct r12a_tx_desc *txd;
+	uint8_t ridx;
+	int ismcast;
+
+	/* XXX TODO: 11n checks, matching rtwn_fill_tx_desc() */
+
+	wh = mtod(m, struct ieee80211_frame *);
+	ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
+	ridx = rate2ridx(params->ibp_rate0);
+
+	/* Fill Tx descriptor. */
+	txd = (struct r12a_tx_desc *)buf;
+	txd->flags0 |= R12A_FLAGS0_LSG | R12A_FLAGS0_FSG;
+	if (ismcast)
+		txd->flags0 |= R12A_FLAGS0_BMCAST;
+
+	if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
+		txd->txdw4 = htole32(R12A_TXDW4_RETRY_LMT_ENA);
+		txd->txdw4 |= htole32(SM(R12A_TXDW4_RETRY_LMT,
+		    params->ibp_try0));
+	}
+	if (params->ibp_flags & IEEE80211_BPF_RTS)
+		r12a_tx_protection(sc, txd, IEEE80211_PROT_RTSCTS, ridx);
+	if (params->ibp_flags & IEEE80211_BPF_CTS)
+		r12a_tx_protection(sc, txd, IEEE80211_PROT_CTSONLY, ridx);
+
+	txd->txdw1 |= htole32(SM(R12A_TXDW1_MACID, RTWN_MACID_BC));
+	txd->txdw1 |= htole32(SM(R12A_TXDW1_QSEL, R12A_TXDW1_QSEL_MGNT));
+
+	/* Set TX rate index. */
+	txd->txdw4 |= htole32(SM(R12A_TXDW4_DATARATE, ridx));
+	txd->txdw4 |= htole32(SM(R12A_TXDW4_DATARATE_FB_LMT, 0x1f));
+	txd->txdw6 |= htole32(SM(R21A_TXDW6_MBSSID, uvp->id));
+	txd->txdw3 |= htole32(R12A_TXDW3_DRVRATE);
+	r12a_tx_raid(sc, txd, ni, ismcast);
+
+	if (!IEEE80211_QOS_HAS_SEQ(wh)) {
+		/* Use HW sequence numbering for non-QoS frames. */
+		txd->txdw8 |= htole32(R12A_TXDW8_HWSEQ_EN);
+		txd->txdw3 |= htole32(SM(R12A_TXDW3_SEQ_SEL, uvp->id));
+	} else {
+		/* Set sequence number. */
+		txd->txdw9 |= htole32(SM(R12A_TXDW9_SEQ,
+		    M_SEQNO_GET(m) % IEEE80211_SEQ_RANGE));
+	}
+}
+
+void
+r12a_fill_tx_desc_null(struct rtwn_softc *sc, void *buf, int is11b, int qos,
+    int id)
+{
+	struct r12a_tx_desc *txd = (struct r12a_tx_desc *)buf;
+
+	txd->flags0 = R12A_FLAGS0_FSG | R12A_FLAGS0_LSG | R12A_FLAGS0_OWN;
+	txd->txdw1 = htole32(
+	    SM(R12A_TXDW1_QSEL, R12A_TXDW1_QSEL_MGNT));
+
+	txd->txdw3 = htole32(R12A_TXDW3_DRVRATE);
+	txd->txdw6 = htole32(SM(R21A_TXDW6_MBSSID, id));
+	if (is11b) {
+		txd->txdw4 = htole32(SM(R12A_TXDW4_DATARATE,
+		    RTWN_RIDX_CCK1));
+	} else {
+		txd->txdw4 = htole32(SM(R12A_TXDW4_DATARATE,
+		    RTWN_RIDX_OFDM6));
+	}
+
+	if (!qos) {
+		txd->txdw8 = htole32(R12A_TXDW8_HWSEQ_EN);
+		txd->txdw3 |= htole32(SM(R12A_TXDW3_SEQ_SEL, id));
+
+	}
+}
+
+uint8_t
+r12a_tx_radiotap_flags(const void *buf)
+{
+	const struct r12a_tx_desc *txd = buf;
+	uint8_t flags, rate;
+
+	if (!(txd->txdw5 & htole32(R12A_TXDW5_DATA_SHORT)))
+		return (0);
+
+	rate = MS(le32toh(txd->txdw4), R12A_TXDW4_DATARATE);
+	if (RTWN_RATE_IS_CCK(rate))
+		flags = IEEE80211_RADIOTAP_F_SHORTPRE;
+	else
+		flags = IEEE80211_RADIOTAP_F_SHORTGI;
+	return (flags);
+}