1 /* 2 * AMD 10Gb Ethernet driver 3 * 4 * This file is available to you under your choice of the following two 5 * licenses: 6 * 7 * License 1: GPLv2 8 * 9 * Copyright (c) 2014 Advanced Micro Devices, Inc. 10 * 11 * This file is free software; you may copy, redistribute and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation, either version 2 of the License, or (at 14 * your option) any later version. 15 * 16 * This file is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program. If not, see <http://www.gnu.org/licenses/>. 23 * 24 * This file incorporates work covered by the following copyright and 25 * permission notice: 26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 28 * Inc. unless otherwise expressly agreed to in writing between Synopsys 29 * and you. 30 * 31 * The Software IS NOT an item of Licensed Software or Licensed Product 32 * under any End User Software License Agreement or Agreement for Licensed 33 * Product with Synopsys or any supplement thereto. Permission is hereby 34 * granted, free of charge, to any person obtaining a copy of this software 35 * annotated with this license and the Software, to deal in the Software 36 * without restriction, including without limitation the rights to use, 37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 38 * of the Software, and to permit persons to whom the Software is furnished 39 * to do so, subject to the following conditions: 40 * 41 * The above copyright notice and this permission notice shall be included 42 * in all copies or substantial portions of the Software. 43 * 44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 54 * THE POSSIBILITY OF SUCH DAMAGE. 55 * 56 * 57 * License 2: Modified BSD 58 * 59 * Copyright (c) 2014 Advanced Micro Devices, Inc. 60 * All rights reserved. 61 * 62 * Redistribution and use in source and binary forms, with or without 63 * modification, are permitted provided that the following conditions are met: 64 * * Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * * Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * * Neither the name of Advanced Micro Devices, Inc. nor the 70 * names of its contributors may be used to endorse or promote products 71 * derived from this software without specific prior written permission. 72 * 73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY 77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 83 * 84 * This file incorporates work covered by the following copyright and 85 * permission notice: 86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 88 * Inc. unless otherwise expressly agreed to in writing between Synopsys 89 * and you. 90 * 91 * The Software IS NOT an item of Licensed Software or Licensed Product 92 * under any End User Software License Agreement or Agreement for Licensed 93 * Product with Synopsys or any supplement thereto. Permission is hereby 94 * granted, free of charge, to any person obtaining a copy of this software 95 * annotated with this license and the Software, to deal in the Software 96 * without restriction, including without limitation the rights to use, 97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 98 * of the Software, and to permit persons to whom the Software is furnished 99 * to do so, subject to the following conditions: 100 * 101 * The above copyright notice and this permission notice shall be included 102 * in all copies or substantial portions of the Software. 103 * 104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 114 * THE POSSIBILITY OF SUCH DAMAGE. 115 */ 116 #include <sys/cdefs.h> 117 __FBSDID("$FreeBSD$"); 118 119 #include "xgbe.h" 120 121 static u64 xgbe_cc_read(const struct cyclecounter *cc) 122 { 123 struct xgbe_prv_data *pdata = container_of(cc, 124 struct xgbe_prv_data, 125 tstamp_cc); 126 u64 nsec; 127 128 nsec = pdata->hw_if.get_tstamp_time(pdata); 129 130 return (nsec); 131 } 132 133 static int xgbe_adjfreq(struct ptp_clock_info *info, s32 delta) 134 { 135 struct xgbe_prv_data *pdata = container_of(info, 136 struct xgbe_prv_data, 137 ptp_clock_info); 138 unsigned long flags; 139 u64 adjust; 140 u32 addend, diff; 141 unsigned int neg_adjust = 0; 142 143 if (delta < 0) { 144 neg_adjust = 1; 145 delta = -delta; 146 } 147 148 adjust = pdata->tstamp_addend; 149 adjust *= delta; 150 diff = div_u64(adjust, 1000000000UL); 151 152 addend = (neg_adjust) ? pdata->tstamp_addend - diff : 153 pdata->tstamp_addend + diff; 154 155 spin_lock_irqsave(&pdata->tstamp_lock, flags); 156 157 pdata->hw_if.update_tstamp_addend(pdata, addend); 158 159 spin_unlock_irqrestore(&pdata->tstamp_lock, flags); 160 161 return (0); 162 } 163 164 static int xgbe_adjtime(struct ptp_clock_info *info, s64 delta) 165 { 166 struct xgbe_prv_data *pdata = container_of(info, 167 struct xgbe_prv_data, 168 ptp_clock_info); 169 unsigned long flags; 170 171 spin_lock_irqsave(&pdata->tstamp_lock, flags); 172 timecounter_adjtime(&pdata->tstamp_tc, delta); 173 spin_unlock_irqrestore(&pdata->tstamp_lock, flags); 174 175 return (0); 176 } 177 178 static int xgbe_gettime(struct ptp_clock_info *info, struct timespec64 *ts) 179 { 180 struct xgbe_prv_data *pdata = container_of(info, 181 struct xgbe_prv_data, 182 ptp_clock_info); 183 unsigned long flags; 184 u64 nsec; 185 186 spin_lock_irqsave(&pdata->tstamp_lock, flags); 187 188 nsec = timecounter_read(&pdata->tstamp_tc); 189 190 spin_unlock_irqrestore(&pdata->tstamp_lock, flags); 191 192 *ts = ns_to_timespec64(nsec); 193 194 return (0); 195 } 196 197 static int xgbe_settime(struct ptp_clock_info *info, 198 const struct timespec64 *ts) 199 { 200 struct xgbe_prv_data *pdata = container_of(info, 201 struct xgbe_prv_data, 202 ptp_clock_info); 203 unsigned long flags; 204 u64 nsec; 205 206 nsec = timespec64_to_ns(ts); 207 208 spin_lock_irqsave(&pdata->tstamp_lock, flags); 209 210 timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc, nsec); 211 212 spin_unlock_irqrestore(&pdata->tstamp_lock, flags); 213 214 return (0); 215 } 216 217 static int xgbe_enable(struct ptp_clock_info *info, 218 void *request, int on) 219 { 220 return (-EOPNOTSUPP); 221 } 222 223 void xgbe_ptp_register(struct xgbe_prv_data *pdata) 224 { 225 struct ptp_clock_info *info = &pdata->ptp_clock_info; 226 //struct ptp_clock *clock; 227 struct cyclecounter *cc = &pdata->tstamp_cc; 228 u64 dividend; 229 230 snprintf(info->name, sizeof(info->name), "axgbe-ptp"); 231 //info->owner = THIS_MODULE; 232 info->max_adj = pdata->ptpclk_rate; 233 info->adjfreq = xgbe_adjfreq; 234 info->adjtime = xgbe_adjtime; 235 info->gettime64 = xgbe_gettime; 236 info->settime64 = xgbe_settime; 237 info->enable = xgbe_enable; 238 #if 0 239 clock = ptp_clock_register(info, pdata->dev); 240 if (IS_ERR(clock)) { 241 dev_err(pdata->dev, "ptp_clock_register failed\n"); 242 return; 243 } 244 245 pdata->ptp_clock = clock; 246 #endif 247 /* Calculate the addend: 248 * addend = 2^32 / (PTP ref clock / 50Mhz) 249 * = (2^32 * 50Mhz) / PTP ref clock 250 */ 251 dividend = 50000000; 252 dividend <<= 32; 253 pdata->tstamp_addend = div_u64(dividend, pdata->ptpclk_rate); 254 255 /* Setup the timecounter */ 256 cc->read = xgbe_cc_read; 257 cc->mask = CLOCKSOURCE_MASK(64); 258 cc->mult = 1; 259 cc->shift = 0; 260 261 timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc, 262 ktime_to_ns(ktime_get_real())); 263 264 /* Disable all timestamping to start */ 265 XGMAC_IOWRITE(pdata, MAC_TSCR, 0); 266 pdata->tstamp_config.tx_type = HWTSTAMP_TX_OFF; 267 pdata->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; 268 } 269 270 void xgbe_ptp_unregister(struct xgbe_prv_data *pdata) 271 { 272 #if 0 273 if (pdata->ptp_clock) 274 ptp_clock_unregister(pdata->ptp_clock); 275 #endif 276 } 277