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 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 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 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 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 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