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__FBSDID("$FreeBSD$");
29
30#include "opt_wlan.h"
31
32#include <sys/param.h>
33#include <sys/lock.h>
34#include <sys/mutex.h>
35#include <sys/mbuf.h>
36#include <sys/kernel.h>
37#include <sys/socket.h>
38#include <sys/systm.h>
39#include <sys/malloc.h>
40#include <sys/queue.h>
41#include <sys/taskqueue.h>
42#include <sys/bus.h>
43#include <sys/endian.h>
44#include <sys/linker.h>
45
46#include <net/if.h>
47#include <net/ethernet.h>
48#include <net/if_media.h>
49
50#include <net80211/ieee80211_var.h>
51#include <net80211/ieee80211_radiotap.h>
52
53#include <dev/rtwn/if_rtwnreg.h>
54#include <dev/rtwn/if_rtwnvar.h>
55
56#include <dev/rtwn/if_rtwn_debug.h>
57
58#include <dev/rtwn/rtl8812a/r12a.h>
59
60#include <dev/rtwn/rtl8821a/r21a.h>
61#include <dev/rtwn/rtl8821a/r21a_reg.h>
62#include <dev/rtwn/rtl8821a/r21a_priv.h>
63
64#ifndef RTWN_WITHOUT_UCODE
65int
66r21a_iq_calib_fw_supported(struct rtwn_softc *sc)
67{
68	if (sc->fwver == 0x16)
69		return (1);
70
71	return (0);
72}
73#endif
74
75void
76r21a_iq_calib_sw(struct rtwn_softc *sc)
77{
78#define R21A_MAX_NRXCHAINS	2
79	uint32_t saved_bb_vals[nitems(r21a_iq_bb_regs)];
80	uint32_t saved_afe_vals[nitems(r21a_iq_afe_regs)];
81	uint32_t saved_rf_vals[nitems(r21a_iq_rf_regs) * R21A_MAX_NRXCHAINS];
82
83	KASSERT(sc->nrxchains <= R21A_MAX_NRXCHAINS,
84	    ("nrxchains > %d (%d)\n", R21A_MAX_NRXCHAINS, sc->nrxchains));
85
86	RTWN_DPRINTF(sc, RTWN_DEBUG_CALIB, "%s: SW IQ calibration: TODO\n",
87	    __func__);
88
89	/* Save registers. */
90	r12a_save_bb_afe_vals(sc, saved_bb_vals, r21a_iq_bb_regs,
91	    nitems(r21a_iq_bb_regs));
92	r12a_save_bb_afe_vals(sc, saved_afe_vals, r21a_iq_afe_regs,
93	    nitems(r21a_iq_afe_regs));
94	r12a_save_rf_vals(sc, saved_rf_vals, r21a_iq_rf_regs,
95	    nitems(r21a_iq_rf_regs));
96
97#ifdef RTWN_TODO
98	/* Configure MAC. */
99	r12a_iq_config_mac(sc);
100	r21a_iq_tx(sc);
101#endif
102
103	/* Restore registers. */
104	r12a_restore_rf_vals(sc, saved_rf_vals, r21a_iq_rf_regs,
105	    nitems(r21a_iq_rf_regs));
106	r12a_restore_bb_afe_vals(sc, saved_afe_vals, r21a_iq_afe_regs,
107	    nitems(r21a_iq_afe_regs));
108
109	/* Select page C1. */
110	rtwn_bb_setbits(sc, R12A_TXAGC_TABLE_SELECT, 0, 0x80000000);
111
112	rtwn_bb_write(sc, R12A_SLEEP_NAV(0), 0);
113	rtwn_bb_write(sc, R12A_PMPD(0), 0);
114	rtwn_bb_write(sc, 0xc88, 0);
115	rtwn_bb_write(sc, 0xc8c, 0x3c000000);
116	rtwn_bb_write(sc, 0xc90, 0x80);
117	rtwn_bb_write(sc, 0xc94, 0);
118	rtwn_bb_write(sc, 0xcc4, 0x20040000);
119	rtwn_bb_write(sc, 0xcc8, 0x20000000);
120	rtwn_bb_write(sc, 0xcb8, 0);
121
122	r12a_restore_bb_afe_vals(sc, saved_bb_vals, r21a_iq_bb_regs,
123	    nitems(r21a_iq_bb_regs));
124#undef R21A_MAX_NRXCHAINS
125}
126