1 /*-
2 * Copyright (c) 2009-2010 Weongyo Jeong <weongyo@freebsd.org>
3 * Copyright (c) 2016 Adrian Chadd <adrian@freebsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer,
11 * without modification.
12 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
13 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
14 * redistribution must be conditioned upon including a substantially
15 * similar Disclaimer requirement for further binary redistribution.
16 *
17 * NO WARRANTY
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTABILITY
21 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
23 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
26 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGES.
29 *
30 * $FreeBSD: head/sys/dev/bwn/if_bwn_phy_common.c 299758 2016-05-14 20:11:48Z adrian $
31 */
32
33 /*
34 * The Broadcom Wireless LAN controller driver.
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/endian.h>
43 #include <sys/errno.h>
44 #include <sys/firmware.h>
45 #include <sys/lock.h>
46 #if !defined(__DragonFly__)
47 #include <machine/bus.h>
48 #include <machine/resource.h>
49 #endif
50 #include <sys/bus.h>
51 #include <sys/rman.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54
55 #include <net/ethernet.h>
56 #include <net/if.h>
57 #include <net/if_var.h>
58 #include <net/if_arp.h>
59 #include <net/if_dl.h>
60 #include <net/if_llc.h>
61 #include <net/if_media.h>
62 #include <net/if_types.h>
63
64 #if defined(__DragonFly__)
65 #include <bus/pci/pcivar.h>
66 #include <bus/pci/pcireg.h>
67 #include <dev/netif/bwn/siba/siba_ids.h>
68 #include <dev/netif/bwn/siba/sibareg.h>
69 #include <dev/netif/bwn/siba/sibavar.h>
70 #else
71 #include <dev/pci/pcivar.h>
72 #include <dev/pci/pcireg.h>
73 #include <dev/siba/siba_ids.h>
74 #include <dev/siba/sibareg.h>
75 #include <dev/siba/sibavar.h>
76 #endif
77
78 #if defined(__DragonFly__)
79 #include <netproto/802_11/ieee80211_var.h>
80 #include <netproto/802_11/ieee80211_radiotap.h>
81 #include <netproto/802_11/ieee80211_regdomain.h>
82 #include <netproto/802_11/ieee80211_phy.h>
83 #include <netproto/802_11/ieee80211_ratectl.h>
84 #else
85 #include <net80211/ieee80211_var.h>
86 #include <net80211/ieee80211_radiotap.h>
87 #include <net80211/ieee80211_regdomain.h>
88 #include <net80211/ieee80211_phy.h>
89 #include <net80211/ieee80211_ratectl.h>
90 #endif
91
92 #if defined(__DragonFly__)
93 #include "if_bwnreg.h"
94 #include "if_bwnvar.h"
95 #else
96 #include <dev/bwn/if_bwnreg.h>
97 #include <dev/bwn/if_bwnvar.h>
98 #endif
99
100 #if defined(__DragonFly__)
101 #include "if_bwn_chipid.h"
102 #include "if_bwn_debug.h"
103 #include "if_bwn_misc.h"
104 #include "if_bwn_phy_common.h"
105 #else
106 #include <dev/bwn/if_bwn_chipid.h>
107 #include <dev/bwn/if_bwn_debug.h>
108 #include <dev/bwn/if_bwn_misc.h>
109 #include <dev/bwn/if_bwn_phy_common.h>
110 #endif
111
112 void
bwn_mac_switch_freq(struct bwn_mac * mac,int spurmode)113 bwn_mac_switch_freq(struct bwn_mac *mac, int spurmode)
114 {
115 struct bwn_softc *sc = mac->mac_sc;
116 uint16_t chip_id = siba_get_chipid(sc->sc_dev);
117
118 if (chip_id == BCMA_CHIP_ID_BCM4331) {
119 switch (spurmode) {
120 case 2: /* 168 Mhz: 2^26/168 = 0x61862 */
121 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x1862);
122 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
123 break;
124 case 1: /* 164 Mhz: 2^26/164 = 0x63e70 */
125 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x3e70);
126 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
127 break;
128 default: /* 160 Mhz: 2^26/160 = 0x66666 */
129 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x6666);
130 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
131 break;
132 }
133 } else if (chip_id == BCMA_CHIP_ID_BCM43131 ||
134 chip_id == BCMA_CHIP_ID_BCM43217 ||
135 chip_id == BCMA_CHIP_ID_BCM43222 ||
136 chip_id == BCMA_CHIP_ID_BCM43224 ||
137 chip_id == BCMA_CHIP_ID_BCM43225 ||
138 chip_id == BCMA_CHIP_ID_BCM43227 ||
139 chip_id == BCMA_CHIP_ID_BCM43228) {
140 switch (spurmode) {
141 case 2: /* 126 Mhz */
142 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x2082);
143 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
144 break;
145 case 1: /* 123 Mhz */
146 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x5341);
147 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
148 break;
149 default: /* 120 Mhz */
150 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x8889);
151 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
152 break;
153 }
154 } else if (mac->mac_phy.type == BWN_PHYTYPE_LCN) {
155 switch (spurmode) {
156 case 1: /* 82 Mhz */
157 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x7CE0);
158 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
159 break;
160 default: /* 80 Mhz */
161 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0xCCCD);
162 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
163 break;
164 }
165 }
166 }
167
168 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/BmacPhyClkFgc */
169 void
bwn_phy_force_clock(struct bwn_mac * mac,int force)170 bwn_phy_force_clock(struct bwn_mac *mac, int force)
171 {
172 struct bwn_softc *sc = mac->mac_sc;
173 uint32_t tmp;
174
175 /* XXX Only for N, HT and AC PHYs */
176
177 /* XXX bhnd bus */
178 if (bwn_is_bus_siba(mac)) {
179 tmp = siba_read_4(sc->sc_dev, SIBA_TGSLOW);
180 if (force)
181 tmp |= SIBA_TGSLOW_FGC;
182 else
183 tmp &= ~SIBA_TGSLOW_FGC;
184 siba_write_4(sc->sc_dev, SIBA_TGSLOW, tmp);
185 }
186 }
187
188 int
bwn_radio_wait_value(struct bwn_mac * mac,uint16_t offset,uint16_t mask,uint16_t value,int delay,int timeout)189 bwn_radio_wait_value(struct bwn_mac *mac, uint16_t offset, uint16_t mask,
190 uint16_t value, int delay, int timeout)
191 {
192 uint16_t val;
193 int i;
194
195 for (i = 0; i < timeout; i += delay) {
196 val = BWN_RF_READ(mac, offset);
197 if ((val & mask) == value)
198 return (1);
199 DELAY(delay);
200 }
201 return (0);
202 }
203
204 void
bwn_mac_phy_clock_set(struct bwn_mac * mac,int enabled)205 bwn_mac_phy_clock_set(struct bwn_mac *mac, int enabled)
206 {
207 struct bwn_softc *sc = mac->mac_sc;
208 uint32_t val;
209
210 /* XXX bhnd bus */
211 if (bwn_is_bus_siba(mac)) {
212 val = siba_read_4(sc->sc_dev, SIBA_TGSLOW);
213 if (enabled)
214 val |= BWN_TMSLOW_MACPHYCLKEN;
215 else
216 val &= ~BWN_TMSLOW_MACPHYCLKEN;
217 siba_write_4(sc->sc_dev, SIBA_TGSLOW, val);
218 }
219 }
220
221 /* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
222 void
bwn_wireless_core_phy_pll_reset(struct bwn_mac * mac)223 bwn_wireless_core_phy_pll_reset(struct bwn_mac *mac)
224 {
225 struct bwn_softc *sc = mac->mac_sc;
226
227 /* XXX bhnd bus */
228 if (bwn_is_bus_siba(mac)) {
229 siba_cc_write32(sc->sc_dev, SIBA_CC_CHIPCTL_ADDR, 0);
230 siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
231 siba_cc_set32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, 0x4);
232 siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
233 }
234 }
235