1/*	$OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $	*/
2
3/*-
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21#include <sys/cdefs.h>
22#include "opt_wlan.h"
23
24#include <sys/param.h>
25#include <sys/lock.h>
26#include <sys/mutex.h>
27#include <sys/mbuf.h>
28#include <sys/kernel.h>
29#include <sys/socket.h>
30#include <sys/systm.h>
31#include <sys/malloc.h>
32#include <sys/queue.h>
33#include <sys/taskqueue.h>
34#include <sys/bus.h>
35#include <sys/endian.h>
36#include <sys/linker.h>
37
38#include <net/if.h>
39#include <net/ethernet.h>
40#include <net/if_media.h>
41
42#include <net80211/ieee80211_var.h>
43#include <net80211/ieee80211_radiotap.h>
44
45#include <dev/rtwn/if_rtwnreg.h>
46#include <dev/rtwn/if_rtwnvar.h>
47
48#include <dev/rtwn/rtl8192c/r92c.h>
49#include <dev/rtwn/rtl8192c/r92c_reg.h>
50#include <dev/rtwn/rtl8192c/r92c_var.h>
51#include <dev/rtwn/rtl8192c/r92c_rom_defs.h>
52
53uint32_t
54r92c_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
55{
56	struct r92c_softc *rs = sc->sc_priv;
57	uint32_t reg[R92C_MAX_CHAINS], val;
58
59	reg[0] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(0));
60	if (chain != 0)
61		reg[chain] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain));
62
63	rtwn_bb_write(sc, R92C_HSSI_PARAM2(0),
64	    reg[0] & ~R92C_HSSI_PARAM2_READ_EDGE);
65	rtwn_delay(sc, rs->rf_read_delay[0]);
66
67	rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain),
68	    RW(reg[chain], R92C_HSSI_PARAM2_READ_ADDR, addr) |
69	    R92C_HSSI_PARAM2_READ_EDGE);
70	rtwn_delay(sc, rs->rf_read_delay[1]);
71
72	rtwn_bb_write(sc, R92C_HSSI_PARAM2(0),
73	    reg[0] | R92C_HSSI_PARAM2_READ_EDGE);
74	rtwn_delay(sc, rs->rf_read_delay[2]);
75
76	if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI)
77		val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain));
78	else
79		val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain));
80	return (MS(val, R92C_LSSI_READBACK_DATA));
81}
82
83void
84r92c_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr,
85    uint32_t val)
86{
87	rtwn_bb_write(sc, R92C_LSSI_PARAM(chain),
88	    SM(R92C_LSSI_PARAM_ADDR, addr) |
89	    SM(R92C_LSSI_PARAM_DATA, val));
90}
91