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