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, MERCHANTIBILITY
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
31 #include <sys/cdefs.h>
32 #include "opt_bwn.h"
33 #include "opt_wlan.h"
34
35 /*
36 * The Broadcom Wireless LAN controller driver.
37 */
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/endian.h>
45 #include <sys/errno.h>
46 #include <sys/firmware.h>
47 #include <sys/lock.h>
48 #include <sys/mutex.h>
49 #include <machine/bus.h>
50 #include <machine/resource.h>
51 #include <sys/bus.h>
52 #include <sys/rman.h>
53 #include <sys/socket.h>
54 #include <sys/sockio.h>
55
56 #include <net/ethernet.h>
57 #include <net/if.h>
58 #include <net/if_var.h>
59 #include <net/if_arp.h>
60 #include <net/if_dl.h>
61 #include <net/if_llc.h>
62 #include <net/if_media.h>
63 #include <net/if_types.h>
64
65 #include <dev/pci/pcivar.h>
66 #include <dev/pci/pcireg.h>
67
68 #include <net80211/ieee80211_var.h>
69 #include <net80211/ieee80211_radiotap.h>
70 #include <net80211/ieee80211_regdomain.h>
71 #include <net80211/ieee80211_phy.h>
72 #include <net80211/ieee80211_ratectl.h>
73
74 #include <dev/bhnd/bhnd.h>
75 #include <dev/bhnd/bhnd_ids.h>
76
77 #include <dev/bhnd/cores/chipc/chipc.h>
78 #include <dev/bhnd/cores/pmu/bhnd_pmu.h>
79
80 #include <dev/bwn/if_bwnreg.h>
81 #include <dev/bwn/if_bwnvar.h>
82
83 #include <dev/bwn/if_bwn_debug.h>
84 #include <dev/bwn/if_bwn_misc.h>
85 #include <dev/bwn/if_bwn_phy_common.h>
86
87 void
bwn_mac_switch_freq(struct bwn_mac * mac,bhnd_pmu_spuravoid spurmode)88 bwn_mac_switch_freq(struct bwn_mac *mac, bhnd_pmu_spuravoid spurmode)
89 {
90 struct bwn_softc *sc = mac->mac_sc;
91 uint16_t chip_id = sc->sc_cid.chip_id;
92
93 if (chip_id == BHND_CHIPID_BCM4331) {
94 switch (spurmode) {
95 case BHND_PMU_SPURAVOID_M2: /* 168 Mhz: 2^26/168 = 0x61862 */
96 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x1862);
97 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
98 break;
99 case BHND_PMU_SPURAVOID_M1: /* 164 Mhz: 2^26/164 = 0x63e70 */
100 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x3e70);
101 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
102 break;
103 case BHND_PMU_SPURAVOID_NONE: /* 160 Mhz: 2^26/160 = 0x66666 */
104 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x6666);
105 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
106 break;
107 }
108 } else if (chip_id == BHND_CHIPID_BCM43131 ||
109 chip_id == BHND_CHIPID_BCM43217 ||
110 chip_id == BHND_CHIPID_BCM43222 ||
111 chip_id == BHND_CHIPID_BCM43224 ||
112 chip_id == BHND_CHIPID_BCM43225 ||
113 chip_id == BHND_CHIPID_BCM43227 ||
114 chip_id == BHND_CHIPID_BCM43228) {
115 switch (spurmode) {
116 case BHND_PMU_SPURAVOID_M2: /* 126 Mhz */
117 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x2082);
118 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
119 break;
120 case BHND_PMU_SPURAVOID_M1: /* 123 Mhz */
121 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x5341);
122 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
123 break;
124 case BHND_PMU_SPURAVOID_NONE: /* 120 Mhz */
125 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x8889);
126 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
127 break;
128 }
129 } else if (mac->mac_phy.type == BWN_PHYTYPE_LCN) {
130 switch (spurmode) {
131 case BHND_PMU_SPURAVOID_M2:
132 device_printf(sc->sc_dev, "invalid spuravoid mode: "
133 "%d\n", spurmode);
134 break;
135 case BHND_PMU_SPURAVOID_M1: /* 82 Mhz */
136 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x7CE0);
137 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
138 break;
139 case BHND_PMU_SPURAVOID_NONE: /* 80 Mhz */
140 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0xCCCD);
141 BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
142 break;
143 }
144 }
145 }
146
147 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/BmacPhyClkFgc */
148 int
bwn_phy_force_clock(struct bwn_mac * mac,int force)149 bwn_phy_force_clock(struct bwn_mac *mac, int force)
150 {
151 struct bwn_softc *sc;
152 uint32_t val, mask;
153 int error;
154
155 sc = mac->mac_sc;
156
157 /* XXX Only for N, HT and AC PHYs */
158 mask = BHND_IOCTL_CLK_FORCE;
159 if (force) {
160 val = BHND_IOCTL_CLK_FORCE;
161 } else {
162 val = 0;
163 }
164
165 if ((error = bhnd_write_ioctl(sc->sc_dev, val, mask))) {
166 device_printf(sc->sc_dev, "failed to set CLK_FORCE ioctl flag: "
167 "%d\n", error);
168 return (error);
169 }
170
171 return (0);
172 }
173
174 int
bwn_radio_wait_value(struct bwn_mac * mac,uint16_t offset,uint16_t mask,uint16_t value,int delay,int timeout)175 bwn_radio_wait_value(struct bwn_mac *mac, uint16_t offset, uint16_t mask,
176 uint16_t value, int delay, int timeout)
177 {
178 uint16_t val;
179 int i;
180
181 for (i = 0; i < timeout; i += delay) {
182 val = BWN_RF_READ(mac, offset);
183 if ((val & mask) == value)
184 return (1);
185 DELAY(delay);
186 }
187 return (0);
188 }
189
190 int
bwn_mac_phy_clock_set(struct bwn_mac * mac,int enabled)191 bwn_mac_phy_clock_set(struct bwn_mac *mac, int enabled)
192 {
193 struct bwn_softc *sc;
194 uint32_t val, mask;
195 int error;
196
197 sc = mac->mac_sc;
198
199 mask = BWN_IOCTL_MACPHYCLKEN;
200 if (enabled) {
201 val = BWN_IOCTL_MACPHYCLKEN;
202 } else {
203 val = 0;
204 }
205
206 if ((error = bhnd_write_ioctl(sc->sc_dev, val, mask))) {
207 device_printf(sc->sc_dev, "failed to set MACPHYCLKEN ioctl "
208 "flag: %d\n", error);
209 return (error);
210 }
211
212 return (0);
213 }
214
215 /* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
216 int
bwn_wireless_core_phy_pll_reset(struct bwn_mac * mac)217 bwn_wireless_core_phy_pll_reset(struct bwn_mac *mac)
218 {
219 struct bwn_softc *sc;
220 uint32_t pll_flag;
221
222 sc = mac->mac_sc;
223
224 if (sc->sc_pmu == NULL) {
225 device_printf(sc->sc_dev, "PMU device not found\n");
226 return (ENXIO);
227 }
228
229 pll_flag = 0x4;
230 bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, 0x0, pll_flag);
231 bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, pll_flag, pll_flag);
232 bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, 0x0, pll_flag);
233
234 return (0);
235 }
236