xref: /freebsd/sys/dev/rtwn/rtl8812a/r12a_rf.c (revision a7623790fb345e6dc986dfd31df0ace115e6f2e4)
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/rtl8812a/r12a.h>
57 #include <dev/rtwn/rtl8812a/r12a_reg.h>
58 
59 uint32_t
60 r12a_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
61 {
62 	uint32_t pi_mode, val;
63 
64 	/* Turn off CCA (avoids reading the wrong value). */
65 	if (addr != R92C_RF_AC)
66 		rtwn_bb_setbits(sc, R12A_CCA_ON_SEC, 0, 0x08);
67 
68 	val = rtwn_bb_read(sc, R12A_HSSI_PARAM1(chain));
69 	pi_mode = (val & R12A_HSSI_PARAM1_PI) ? 1 : 0;
70 
71 	rtwn_bb_setbits(sc, R12A_HSSI_PARAM2,
72 	    R12A_HSSI_PARAM2_READ_ADDR_MASK, addr);
73 
74 	val = rtwn_bb_read(sc, pi_mode ? R12A_HSPI_READBACK(chain) :
75 	    R12A_LSSI_READBACK(chain));
76 
77 	/* Turn on CCA (when exiting). */
78 	if (addr != R92C_RF_AC)
79 		rtwn_bb_setbits(sc, R12A_CCA_ON_SEC, 0x08, 0);
80 
81 	return (MS(val, R92C_LSSI_READBACK_DATA));
82 }
83 
84 uint32_t
85 r12a_c_cut_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr)
86 {
87 	uint32_t pi_mode, val;
88 
89 	val = rtwn_bb_read(sc, R12A_HSSI_PARAM1(chain));
90 	pi_mode = (val & R12A_HSSI_PARAM1_PI) ? 1 : 0;
91 
92 	rtwn_bb_setbits(sc, R12A_HSSI_PARAM2,
93 	    R12A_HSSI_PARAM2_READ_ADDR_MASK, addr);
94 	rtwn_delay(sc, 20);
95 
96 	val = rtwn_bb_read(sc, pi_mode ? R12A_HSPI_READBACK(chain) :
97 	    R12A_LSSI_READBACK(chain));
98 
99 	return (MS(val, R92C_LSSI_READBACK_DATA));
100 }
101 
102 void
103 r12a_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr,
104     uint32_t val)
105 {
106 	rtwn_bb_write(sc, R12A_LSSI_PARAM(chain),
107 	    SM(R88E_LSSI_PARAM_ADDR, addr) |
108 	    SM(R92C_LSSI_PARAM_DATA, val));
109 }
110