1 /*-
2 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include "opt_wlan.h"
29
30 #include <sys/param.h>
31 #include <sys/lock.h>
32 #include <sys/mutex.h>
33 #include <sys/mbuf.h>
34 #include <sys/kernel.h>
35 #include <sys/socket.h>
36 #include <sys/systm.h>
37 #include <sys/malloc.h>
38 #include <sys/queue.h>
39 #include <sys/taskqueue.h>
40 #include <sys/bus.h>
41 #include <sys/endian.h>
42 #include <sys/linker.h>
43
44 #include <net/if.h>
45 #include <net/ethernet.h>
46 #include <net/if_media.h>
47
48 #include <net80211/ieee80211_var.h>
49 #include <net80211/ieee80211_radiotap.h>
50
51 #include <dev/rtwn/if_rtwnvar.h>
52
53 #include <dev/rtwn/if_rtwn_ridx.h>
54 #include <dev/rtwn/if_rtwn_rx.h>
55
56 #include <dev/rtwn/rtl8812a/r12a_var.h>
57
58 #include <dev/rtwn/rtl8821a/r21a.h>
59 #include <dev/rtwn/rtl8821a/r21a_reg.h>
60
61 static void
r21a_bypass_ext_lna_2ghz(struct rtwn_softc * sc)62 r21a_bypass_ext_lna_2ghz(struct rtwn_softc *sc)
63 {
64 rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00100000, 0);
65 rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00400000, 0);
66 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0, 0x07);
67 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0, 0x0700);
68 }
69
70 void
r21a_set_band_2ghz(struct rtwn_softc * sc,uint32_t basicrates)71 r21a_set_band_2ghz(struct rtwn_softc *sc, uint32_t basicrates)
72 {
73 struct r12a_softc *rs = sc->sc_priv;
74
75 /* Enable CCK / OFDM. */
76 rtwn_bb_setbits(sc, R12A_OFDMCCK_EN,
77 0, R12A_OFDMCCK_EN_CCK | R12A_OFDMCCK_EN_OFDM);
78
79 /* Turn off RF PA and LNA. */
80 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
81 R12A_RFE_PINMUX_LNA_MASK, 0x7000);
82 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
83 R12A_RFE_PINMUX_PA_A_MASK, 0x70);
84
85 if (rs->ext_lna_2g) {
86 /* Turn on 2.4 GHz external LNA. */
87 rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0, 0x00100000);
88 rtwn_bb_setbits(sc, R12A_RFE_INV(0), 0x00400000, 0);
89 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0x05, 0x02);
90 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0), 0x0500, 0x0200);
91 } else {
92 /* Bypass 2.4 GHz external LNA. */
93 r21a_bypass_ext_lna_2ghz(sc);
94 }
95
96 /* Select AGC table. */
97 rtwn_bb_setbits(sc, R12A_TX_SCALE(0), 0x0f00, 0);
98
99 rtwn_bb_setbits(sc, R12A_TX_PATH, 0xf0, 0x10);
100 rtwn_bb_setbits(sc, R12A_CCK_RX_PATH, 0x0f000000, 0x01000000);
101
102 /* Write basic rates. */
103 rtwn_set_basicrates(sc, basicrates);
104
105 rtwn_write_1(sc, R12A_CCK_CHECK, 0);
106 }
107
108 void
r21a_set_band_5ghz(struct rtwn_softc * sc,uint32_t basicrates)109 r21a_set_band_5ghz(struct rtwn_softc *sc, uint32_t basicrates)
110 {
111 struct r12a_softc *rs = sc->sc_priv;
112 int ntries;
113
114 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
115 R12A_RFE_PINMUX_LNA_MASK, 0x5000);
116 rtwn_bb_setbits(sc, R12A_RFE_PINMUX(0),
117 R12A_RFE_PINMUX_PA_A_MASK, 0x40);
118
119 if (rs->ext_lna_2g) {
120 /* Bypass 2.4 GHz external LNA. */
121 r21a_bypass_ext_lna_2ghz(sc);
122 }
123
124 rtwn_write_1(sc, R12A_CCK_CHECK, R12A_CCK_CHECK_5GHZ);
125
126 for (ntries = 0; ntries < 100; ntries++) {
127 if ((rtwn_read_2(sc, R12A_TXPKT_EMPTY) & 0x30) == 0x30)
128 break;
129
130 rtwn_delay(sc, 25);
131 }
132 if (ntries == 100) {
133 device_printf(sc->sc_dev,
134 "%s: TXPKT_EMPTY check failed (%04X)\n",
135 __func__, rtwn_read_2(sc, R12A_TXPKT_EMPTY));
136 }
137
138 /* Enable OFDM. */
139 rtwn_bb_setbits(sc, R12A_OFDMCCK_EN, R12A_OFDMCCK_EN_CCK,
140 R12A_OFDMCCK_EN_OFDM);
141
142 /* Select AGC table. */
143 rtwn_bb_setbits(sc, R12A_TX_SCALE(0), 0x0f00, 0x0100);
144
145 rtwn_bb_setbits(sc, R12A_TX_PATH, 0xf0, 0);
146 rtwn_bb_setbits(sc, R12A_CCK_RX_PATH, 0, 0x0f000000);
147
148 /* Write basic rates. */
149 rtwn_set_basicrates(sc, basicrates);
150 }
151