1 /************************************************************************** 2 SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 4 Copyright (c) 2008, Chelsio Inc. 5 All rights reserved. 6 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions are met: 9 10 1. Redistributions of source code must retain the above copyright notice, 11 this list of conditions and the following disclaimer. 12 13 2. Neither the name of the Chelsio Corporation nor the names of its 14 contributors may be used to endorse or promote products derived from 15 this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 POSSIBILITY OF SUCH DAMAGE. 28 29 ***************************************************************************/ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <cxgb_include.h> 35 36 #undef msleep 37 #define msleep t3_os_sleep 38 39 /* TN1010 PHY specific registers. */ 40 enum { 41 TN1010_VEND1_STAT = 1, 42 }; 43 44 /* IEEE auto-negotiation 10GBASE-T registers */ 45 enum { 46 ANEG_ADVER = 16, 47 ANEG_LPA = 19, 48 ANEG_10G_CTRL = 32, 49 ANEG_10G_STAT = 33 50 }; 51 52 #define ADVERTISE_ENPAGE (1 << 12) 53 #define ADVERTISE_10000FULL (1 << 12) 54 #define ADVERTISE_LOOP_TIMING (1 << 0) 55 56 /* vendor specific status register fields */ 57 #define F_XS_LANE_ALIGN_STAT (1 << 0) 58 #define F_PCS_BLK_LOCK (1 << 1) 59 #define F_PMD_SIGNAL_OK (1 << 2) 60 #define F_LINK_STAT (1 << 3) 61 #define F_ANEG_SPEED_1G (1 << 4) 62 #define F_ANEG_MASTER (1 << 5) 63 64 #define S_ANEG_STAT 6 65 #define M_ANEG_STAT 0x3 66 #define G_ANEG_STAT(x) (((x) >> S_ANEG_STAT) & M_ANEG_STAT) 67 68 enum { /* autonegotiation status */ 69 ANEG_IN_PROGR = 0, 70 ANEG_COMPLETE = 1, 71 ANEG_FAILED = 3 72 }; 73 74 /* 75 * Reset the PHY. May take up to 500ms to complete. 76 */ 77 static int tn1010_reset(struct cphy *phy, int wait) 78 { 79 int err = t3_phy_reset(phy, MDIO_DEV_PMA_PMD, wait); 80 msleep(500); 81 return err; 82 } 83 84 static int tn1010_power_down(struct cphy *phy, int enable) 85 { 86 return t3_mdio_change_bits(phy, MDIO_DEV_PMA_PMD, MII_BMCR, 87 BMCR_PDOWN, enable ? BMCR_PDOWN : 0); 88 } 89 90 static int tn1010_autoneg_enable(struct cphy *phy) 91 { 92 int err; 93 94 err = tn1010_power_down(phy, 0); 95 if (!err) 96 err = t3_mdio_change_bits(phy, MDIO_DEV_ANEG, MII_BMCR, 0, 97 BMCR_ANENABLE | BMCR_ANRESTART); 98 return err; 99 } 100 101 static int tn1010_autoneg_restart(struct cphy *phy) 102 { 103 int err; 104 105 err = tn1010_power_down(phy, 0); 106 if (!err) 107 err = t3_mdio_change_bits(phy, MDIO_DEV_ANEG, MII_BMCR, 0, 108 BMCR_ANRESTART); 109 return err; 110 } 111 112 static int tn1010_advertise(struct cphy *phy, unsigned int advert) 113 { 114 int err, val; 115 116 if (!(advert & ADVERTISED_1000baseT_Full)) 117 return -EINVAL; /* PHY can't disable 1000BASE-T */ 118 119 val = ADVERTISE_CSMA | ADVERTISE_ENPAGE | ADVERTISE_NPAGE; 120 if (advert & ADVERTISED_Pause) 121 val |= ADVERTISE_PAUSE_CAP; 122 if (advert & ADVERTISED_Asym_Pause) 123 val |= ADVERTISE_PAUSE_ASYM; 124 err = mdio_write(phy, MDIO_DEV_ANEG, ANEG_ADVER, val); 125 if (err) 126 return err; 127 128 val = (advert & ADVERTISED_10000baseT_Full) ? ADVERTISE_10000FULL : 0; 129 return mdio_write(phy, MDIO_DEV_ANEG, ANEG_10G_CTRL, val | 130 ADVERTISE_LOOP_TIMING); 131 } 132 133 static int tn1010_get_link_status(struct cphy *phy, int *link_state, 134 int *speed, int *duplex, int *fc) 135 { 136 unsigned int status, lpa, adv; 137 int err, sp = -1, pause = 0; 138 139 err = mdio_read(phy, MDIO_DEV_VEND1, TN1010_VEND1_STAT, &status); 140 if (err) 141 return err; 142 143 if (link_state) 144 *link_state = status & F_LINK_STAT ? PHY_LINK_UP : 145 PHY_LINK_DOWN; 146 147 if (G_ANEG_STAT(status) == ANEG_COMPLETE) { 148 sp = (status & F_ANEG_SPEED_1G) ? SPEED_1000 : SPEED_10000; 149 150 if (fc) { 151 err = mdio_read(phy, MDIO_DEV_ANEG, ANEG_LPA, &lpa); 152 if (!err) 153 err = mdio_read(phy, MDIO_DEV_ANEG, ANEG_ADVER, 154 &adv); 155 if (err) 156 return err; 157 158 if (lpa & adv & ADVERTISE_PAUSE_CAP) 159 pause = PAUSE_RX | PAUSE_TX; 160 else if ((lpa & ADVERTISE_PAUSE_CAP) && 161 (lpa & ADVERTISE_PAUSE_ASYM) && 162 (adv & ADVERTISE_PAUSE_ASYM)) 163 pause = PAUSE_TX; 164 else if ((lpa & ADVERTISE_PAUSE_ASYM) && 165 (adv & ADVERTISE_PAUSE_CAP)) 166 pause = PAUSE_RX; 167 } 168 } 169 if (speed) 170 *speed = sp; 171 if (duplex) 172 *duplex = DUPLEX_FULL; 173 if (fc) 174 *fc = pause; 175 return 0; 176 } 177 178 static int tn1010_set_speed_duplex(struct cphy *phy, int speed, int duplex) 179 { 180 return -EINVAL; /* require autoneg */ 181 } 182 183 #ifdef C99_NOT_SUPPORTED 184 static struct cphy_ops tn1010_ops = { 185 tn1010_reset, 186 t3_phy_lasi_intr_enable, 187 t3_phy_lasi_intr_disable, 188 t3_phy_lasi_intr_clear, 189 t3_phy_lasi_intr_handler, 190 tn1010_autoneg_enable, 191 tn1010_autoneg_restart, 192 tn1010_advertise, 193 NULL, 194 tn1010_set_speed_duplex, 195 tn1010_get_link_status, 196 tn1010_power_down, 197 }; 198 #else 199 static struct cphy_ops tn1010_ops = { 200 .reset = tn1010_reset, 201 .intr_enable = t3_phy_lasi_intr_enable, 202 .intr_disable = t3_phy_lasi_intr_disable, 203 .intr_clear = t3_phy_lasi_intr_clear, 204 .intr_handler = t3_phy_lasi_intr_handler, 205 .autoneg_enable = tn1010_autoneg_enable, 206 .autoneg_restart = tn1010_autoneg_restart, 207 .advertise = tn1010_advertise, 208 .set_speed_duplex = tn1010_set_speed_duplex, 209 .get_link_status = tn1010_get_link_status, 210 .power_down = tn1010_power_down, 211 }; 212 #endif 213 214 int t3_tn1010_phy_prep(pinfo_t *pinfo, int phy_addr, 215 const struct mdio_ops *mdio_ops) 216 { 217 cphy_init(&pinfo->phy, pinfo->adapter, pinfo, phy_addr, &tn1010_ops, mdio_ops, 218 SUPPORTED_1000baseT_Full | SUPPORTED_10000baseT_Full | 219 SUPPORTED_Autoneg | SUPPORTED_AUI | SUPPORTED_TP, 220 "1000/10GBASE-T"); 221 msleep(500); /* PHY needs up to 500ms to start responding to MDIO */ 222 return 0; 223 } 224