sys/dev/bwn/if_bwn_phy_common.c

   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 __FBSDID("$FreeBSD$");
  33
  34 #include "opt_bwn.h"
  35 #include "opt_wlan.h"
  36
  37 /*
  38  * The Broadcom Wireless LAN controller driver.
  39  */
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/malloc.h>
  45 #include <sys/module.h>
  46 #include <sys/endian.h>
  47 #include <sys/errno.h>
  48 #include <sys/firmware.h>
  49 #include <sys/lock.h>
  50 #include <sys/mutex.h>
  51 #include <machine/bus.h>
  52 #include <machine/resource.h>
  53 #include <sys/bus.h>
  54 #include <sys/rman.h>
  55 #include <sys/socket.h>
  56 #include <sys/sockio.h>
  57
  58 #include <net/ethernet.h>
  59 #include <net/if.h>
  60 #include <net/if_var.h>
  61 #include <net/if_arp.h>
  62 #include <net/if_dl.h>
  63 #include <net/if_llc.h>
  64 #include <net/if_media.h>
  65 #include <net/if_types.h>
  66
  67 #include <dev/pci/pcivar.h>
  68 #include <dev/pci/pcireg.h>
  69
  70 #include <net80211/ieee80211_var.h>
  71 #include <net80211/ieee80211_radiotap.h>
  72 #include <net80211/ieee80211_regdomain.h>
  73 #include <net80211/ieee80211_phy.h>
  74 #include <net80211/ieee80211_ratectl.h>
  75
  76 #include <dev/bhnd/bhnd.h>
  77 #include <dev/bhnd/bhnd_ids.h>
  78
  79 #include <dev/bhnd/cores/chipc/chipc.h>
  80 #include <dev/bhnd/cores/pmu/bhnd_pmu.h>
  81
  82 #include <dev/bwn/if_bwnreg.h>
  83 #include <dev/bwn/if_bwnvar.h>
  84
  85 #include <dev/bwn/if_bwn_debug.h>
  86 #include <dev/bwn/if_bwn_misc.h>
  87 #include <dev/bwn/if_bwn_phy_common.h>
  88
  89 void
  90 bwn_mac_switch_freq(struct bwn_mac *mac, bhnd_pmu_spuravoid spurmode)
  91 {
  92         struct bwn_softc *sc = mac->mac_sc;
  93         uint16_t chip_id = sc->sc_cid.chip_id;
  94
  95         if (chip_id == BHND_CHIPID_BCM4331) {
  96                 switch (spurmode) {
  97                 case BHND_PMU_SPURAVOID_M2: /* 168 Mhz: 2^26/168 = 0x61862 */
  98                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x1862);
  99                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
 100                         break;
 101                 case BHND_PMU_SPURAVOID_M1: /* 164 Mhz: 2^26/164 = 0x63e70 */
 102                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x3e70);
 103                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
 104                         break;
 105                 case BHND_PMU_SPURAVOID_NONE: /* 160 Mhz: 2^26/160 = 0x66666 */
 106                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x6666);
 107                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x6);
 108                         break;
 109                 }
 110         } else if (chip_id == BHND_CHIPID_BCM43131 ||
 111             chip_id == BHND_CHIPID_BCM43217 ||
 112             chip_id == BHND_CHIPID_BCM43222 ||
 113             chip_id == BHND_CHIPID_BCM43224 ||
 114             chip_id == BHND_CHIPID_BCM43225 ||
 115             chip_id == BHND_CHIPID_BCM43227 ||
 116             chip_id == BHND_CHIPID_BCM43228) {
 117                 switch (spurmode) {
 118                 case BHND_PMU_SPURAVOID_M2: /* 126 Mhz */
 119                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x2082);
 120                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
 121                         break;
 122                 case BHND_PMU_SPURAVOID_M1: /* 123 Mhz */
 123                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x5341);
 124                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
 125                         break;
 126                 case BHND_PMU_SPURAVOID_NONE: /* 120 Mhz */
 127                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x8889);
 128                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0x8);
 129                         break;
 130                 }
 131         } else if (mac->mac_phy.type == BWN_PHYTYPE_LCN) {
 132                 switch (spurmode) {
 133                 case BHND_PMU_SPURAVOID_M2:
 134                         device_printf(sc->sc_dev, "invalid spuravoid mode: "
 135                             "%d\n", spurmode);
 136                         break;
 137                 case BHND_PMU_SPURAVOID_M1: /* 82 Mhz */
 138                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0x7CE0);
 139                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
 140                         break;
 141                 case BHND_PMU_SPURAVOID_NONE: /* 80 Mhz */
 142                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_LOW, 0xCCCD);
 143                         BWN_WRITE_2(mac, BWN_TSF_CLK_FRAC_HIGH, 0xC);
 144                         break;
 145                 }
 146         }
 147 }
 148
 149 /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/BmacPhyClkFgc */
 150 int
 151 bwn_phy_force_clock(struct bwn_mac *mac, int force)
 152 {
 153         struct bwn_softc        *sc;
 154         uint32_t                 val, mask;
 155         int                      error;
 156
 157         sc = mac->mac_sc;
 158
 159         /* XXX Only for N, HT and AC PHYs */
 160         mask = BHND_IOCTL_CLK_FORCE;
 161         if (force) {
 162                 val = BHND_IOCTL_CLK_FORCE;
 163         } else {
 164                 val = 0;
 165         }
 166
 167         if ((error = bhnd_write_ioctl(sc->sc_dev, val, mask))) {
 168                 device_printf(sc->sc_dev, "failed to set CLK_FORCE ioctl flag: "
 169                     "%d\n", error);
 170                 return (error);
 171         }
 172
 173         return (0);
 174 }
 175
 176 int
 177 bwn_radio_wait_value(struct bwn_mac *mac, uint16_t offset, uint16_t mask,
 178     uint16_t value, int delay, int timeout)
 179 {
 180         uint16_t val;
 181         int i;
 182
 183         for (i = 0; i < timeout; i += delay) {
 184                 val = BWN_RF_READ(mac, offset);
 185                 if ((val & mask) == value)
 186                         return (1);
 187                 DELAY(delay);
 188         }
 189         return (0);
 190 }
 191
 192 int
 193 bwn_mac_phy_clock_set(struct bwn_mac *mac, int enabled)
 194 {
 195         struct bwn_softc        *sc;
 196         uint32_t                 val, mask;
 197         int                      error;
 198
 199         sc = mac->mac_sc;
 200
 201         mask = BWN_IOCTL_MACPHYCLKEN;
 202         if (enabled) {
 203                 val = BWN_IOCTL_MACPHYCLKEN;
 204         } else {
 205                 val = 0;
 206         }
 207
 208         if ((error = bhnd_write_ioctl(sc->sc_dev, val, mask))) {
 209                 device_printf(sc->sc_dev, "failed to set MACPHYCLKEN ioctl "
 210                     "flag: %d\n", error);
 211                 return (error);
 212         }
 213
 214         return (0);
 215 }
 216
 217 /* http://bcm-v4.sipsolutions.net/802.11/PHY/BmacCorePllReset */
 218 int
 219 bwn_wireless_core_phy_pll_reset(struct bwn_mac *mac)
 220 {
 221         struct bwn_softc        *sc;
 222         uint32_t                 pll_flag;
 223
 224         sc = mac->mac_sc;
 225
 226         if (sc->sc_pmu == NULL) {
 227                 device_printf(sc->sc_dev, "PMU device not found\n");
 228                 return (ENXIO);
 229         }
 230
 231         pll_flag = 0x4;
 232         bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, 0x0, pll_flag);
 233         bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, pll_flag, pll_flag);
 234         bhnd_pmu_write_chipctrl(sc->sc_pmu, 0x0, 0x0, pll_flag);
 235
 236         return (0);
 237 }