1 /*
   2  * Copyright (c) 2012-2015 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright notice,
   9  *    this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright notice,
  11  *    this list of conditions and the following disclaimer in the documentation
  12  *    and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  21  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  22  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  23  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  24  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * The views and conclusions contained in the software and documentation are
  27  * those of the authors and should not be interpreted as representing official
  28  * policies, either expressed or implied, of the FreeBSD Project.
  29  */
  30 
  31 #include "efx.h"
  32 #include "efx_impl.h"
  33 
  34 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
  35 
  36 static                  void
  37 mcdi_phy_decode_cap(
  38         __in            uint32_t mcdi_cap,
  39         __out           uint32_t *maskp)
  40 {
  41         uint32_t mask;
  42 
  43         mask = 0;
  44         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
  45                 mask |= (1 << EFX_PHY_CAP_10HDX);
  46         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
  47                 mask |= (1 << EFX_PHY_CAP_10FDX);
  48         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
  49                 mask |= (1 << EFX_PHY_CAP_100HDX);
  50         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
  51                 mask |= (1 << EFX_PHY_CAP_100FDX);
  52         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
  53                 mask |= (1 << EFX_PHY_CAP_1000HDX);
  54         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
  55                 mask |= (1 << EFX_PHY_CAP_1000FDX);
  56         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
  57                 mask |= (1 << EFX_PHY_CAP_10000FDX);
  58         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
  59                 mask |= (1 << EFX_PHY_CAP_40000FDX);
  60         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
  61                 mask |= (1 << EFX_PHY_CAP_PAUSE);
  62         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
  63                 mask |= (1 << EFX_PHY_CAP_ASYM);
  64         if (mcdi_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
  65                 mask |= (1 << EFX_PHY_CAP_AN);
  66 
  67         *maskp = mask;
  68 }
  69 
  70 static                  void
  71 mcdi_phy_decode_link_mode(
  72         __in            efx_nic_t *enp,
  73         __in            uint32_t link_flags,
  74         __in            unsigned int speed,
  75         __in            unsigned int fcntl,
  76         __out           efx_link_mode_t *link_modep,
  77         __out           unsigned int *fcntlp)
  78 {
  79         boolean_t fd = !!(link_flags &
  80                     (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
  81         boolean_t up = !!(link_flags &
  82                     (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
  83 
  84         _NOTE(ARGUNUSED(enp))
  85 
  86         if (!up)
  87                 *link_modep = EFX_LINK_DOWN;
  88         else if (speed == 40000 && fd)
  89                 *link_modep = EFX_LINK_40000FDX;
  90         else if (speed == 10000 && fd)
  91                 *link_modep = EFX_LINK_10000FDX;
  92         else if (speed == 1000)
  93                 *link_modep = fd ? EFX_LINK_1000FDX : EFX_LINK_1000HDX;
  94         else if (speed == 100)
  95                 *link_modep = fd ? EFX_LINK_100FDX : EFX_LINK_100HDX;
  96         else if (speed == 10)
  97                 *link_modep = fd ? EFX_LINK_10FDX : EFX_LINK_10HDX;
  98         else
  99                 *link_modep = EFX_LINK_UNKNOWN;
 100 
 101         if (fcntl == MC_CMD_FCNTL_OFF)
 102                 *fcntlp = 0;
 103         else if (fcntl == MC_CMD_FCNTL_RESPOND)
 104                 *fcntlp = EFX_FCNTL_RESPOND;
 105         else if (fcntl == MC_CMD_FCNTL_GENERATE)
 106                 *fcntlp = EFX_FCNTL_GENERATE;
 107         else if (fcntl == MC_CMD_FCNTL_BIDIR)
 108                 *fcntlp = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 109         else {
 110                 EFSYS_PROBE1(mc_pcol_error, int, fcntl);
 111                 *fcntlp = 0;
 112         }
 113 }
 114 
 115 
 116                         void
 117 ef10_phy_link_ev(
 118         __in            efx_nic_t *enp,
 119         __in            efx_qword_t *eqp,
 120         __out           efx_link_mode_t *link_modep)
 121 {
 122         efx_port_t *epp = &(enp->en_port);
 123         unsigned int link_flags;
 124         unsigned int speed;
 125         unsigned int fcntl;
 126         efx_link_mode_t link_mode;
 127         uint32_t lp_cap_mask;
 128 
 129         /*
 130          * Convert the LINKCHANGE speed enumeration into mbit/s, in the
 131          * same way as GET_LINK encodes the speed
 132          */
 133         switch (MCDI_EV_FIELD(eqp, LINKCHANGE_SPEED)) {
 134         case MCDI_EVENT_LINKCHANGE_SPEED_100M:
 135                 speed = 100;
 136                 break;
 137         case MCDI_EVENT_LINKCHANGE_SPEED_1G:
 138                 speed = 1000;
 139                 break;
 140         case MCDI_EVENT_LINKCHANGE_SPEED_10G:
 141                 speed = 10000;
 142                 break;
 143         case MCDI_EVENT_LINKCHANGE_SPEED_40G:
 144                 speed = 40000;
 145                 break;
 146         default:
 147                 speed = 0;
 148                 break;
 149         }
 150 
 151         link_flags = MCDI_EV_FIELD(eqp, LINKCHANGE_LINK_FLAGS);
 152         mcdi_phy_decode_link_mode(enp, link_flags, speed,
 153                                     MCDI_EV_FIELD(eqp, LINKCHANGE_FCNTL),
 154                                     &link_mode, &fcntl);
 155         mcdi_phy_decode_cap(MCDI_EV_FIELD(eqp, LINKCHANGE_LP_CAP),
 156                             &lp_cap_mask);
 157 
 158         /*
 159          * It's safe to update ep_lp_cap_mask without the driver's port lock
 160          * because presumably any concurrently running efx_port_poll() is
 161          * only going to arrive at the same value.
 162          *
 163          * ep_fcntl has two meanings. It's either the link common fcntl
 164          * (if the PHY supports AN), or it's the forced link state. If
 165          * the former, it's safe to update the value for the same reason as
 166          * for ep_lp_cap_mask. If the latter, then just ignore the value,
 167          * because we can race with efx_mac_fcntl_set().
 168          */
 169         epp->ep_lp_cap_mask = lp_cap_mask;
 170         epp->ep_fcntl = fcntl;
 171 
 172         *link_modep = link_mode;
 173 }
 174 
 175         __checkReturn   efx_rc_t
 176 ef10_phy_power(
 177         __in            efx_nic_t *enp,
 178         __in            boolean_t power)
 179 {
 180         efx_rc_t rc;
 181 
 182         if (!power)
 183                 return (0);
 184 
 185         /* Check if the PHY is a zombie */
 186         if ((rc = ef10_phy_verify(enp)) != 0)
 187                 goto fail1;
 188 
 189         enp->en_reset_flags |= EFX_RESET_PHY;
 190 
 191         return (0);
 192 
 193 fail1:
 194         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 195 
 196         return (rc);
 197 }
 198 
 199         __checkReturn   efx_rc_t
 200 ef10_phy_get_link(
 201         __in            efx_nic_t *enp,
 202         __out           ef10_link_state_t *elsp)
 203 {
 204         efx_mcdi_req_t req;
 205         uint8_t payload[MAX(MC_CMD_GET_LINK_IN_LEN,
 206                             MC_CMD_GET_LINK_OUT_LEN)];
 207         efx_rc_t rc;
 208 
 209         (void) memset(payload, 0, sizeof (payload));
 210         req.emr_cmd = MC_CMD_GET_LINK;
 211         req.emr_in_buf = payload;
 212         req.emr_in_length = MC_CMD_GET_LINK_IN_LEN;
 213         req.emr_out_buf = payload;
 214         req.emr_out_length = MC_CMD_GET_LINK_OUT_LEN;
 215 
 216         efx_mcdi_execute(enp, &req);
 217 
 218         if (req.emr_rc != 0) {
 219                 rc = req.emr_rc;
 220                 goto fail1;
 221         }
 222 
 223         if (req.emr_out_length_used < MC_CMD_GET_LINK_OUT_LEN) {
 224                 rc = EMSGSIZE;
 225                 goto fail2;
 226         }
 227 
 228         mcdi_phy_decode_cap(MCDI_OUT_DWORD(req, GET_LINK_OUT_CAP),
 229                             &elsp->els_adv_cap_mask);
 230         mcdi_phy_decode_cap(MCDI_OUT_DWORD(req, GET_LINK_OUT_LP_CAP),
 231                             &elsp->els_lp_cap_mask);
 232 
 233         mcdi_phy_decode_link_mode(enp, MCDI_OUT_DWORD(req, GET_LINK_OUT_FLAGS),
 234                             MCDI_OUT_DWORD(req, GET_LINK_OUT_LINK_SPEED),
 235                             MCDI_OUT_DWORD(req, GET_LINK_OUT_FCNTL),
 236                             &elsp->els_link_mode, &elsp->els_fcntl);
 237 
 238 #if EFSYS_OPT_LOOPBACK
 239         /* Assert the MC_CMD_LOOPBACK and EFX_LOOPBACK namespace agree */
 240         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_NONE == EFX_LOOPBACK_OFF);
 241         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_DATA == EFX_LOOPBACK_DATA);
 242         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_GMAC == EFX_LOOPBACK_GMAC);
 243         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XGMII == EFX_LOOPBACK_XGMII);
 244         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XGXS == EFX_LOOPBACK_XGXS);
 245         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XAUI == EFX_LOOPBACK_XAUI);
 246         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_GMII == EFX_LOOPBACK_GMII);
 247         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_SGMII == EFX_LOOPBACK_SGMII);
 248         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XGBR == EFX_LOOPBACK_XGBR);
 249         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XFI == EFX_LOOPBACK_XFI);
 250         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XAUI_FAR == EFX_LOOPBACK_XAUI_FAR);
 251         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_GMII_FAR == EFX_LOOPBACK_GMII_FAR);
 252         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_SGMII_FAR == EFX_LOOPBACK_SGMII_FAR);
 253         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_XFI_FAR == EFX_LOOPBACK_XFI_FAR);
 254         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_GPHY == EFX_LOOPBACK_GPHY);
 255         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_PHYXS == EFX_LOOPBACK_PHY_XS);
 256         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_PCS == EFX_LOOPBACK_PCS);
 257         EFX_STATIC_ASSERT(MC_CMD_LOOPBACK_PMAPMD == EFX_LOOPBACK_PMA_PMD);
 258 
 259         elsp->els_loopback = MCDI_OUT_DWORD(req, GET_LINK_OUT_LOOPBACK_MODE);
 260 #endif  /* EFSYS_OPT_LOOPBACK */
 261 
 262         elsp->els_mac_up = MCDI_OUT_DWORD(req, GET_LINK_OUT_MAC_FAULT) == 0;
 263 
 264         return (0);
 265 
 266 fail2:
 267         EFSYS_PROBE(fail2);
 268 fail1:
 269         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 270 
 271         return (rc);
 272 }
 273 
 274         __checkReturn   efx_rc_t
 275 ef10_phy_reconfigure(
 276         __in            efx_nic_t *enp)
 277 {
 278         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
 279         efx_port_t *epp = &(enp->en_port);
 280         efx_mcdi_req_t req;
 281         uint8_t payload[MAX(MC_CMD_SET_LINK_IN_LEN,
 282                             MC_CMD_SET_LINK_OUT_LEN)];
 283         uint32_t cap_mask;
 284         unsigned int led_mode;
 285         unsigned int speed;
 286         efx_rc_t rc;
 287 
 288         if (~encp->enc_func_flags & EFX_NIC_FUNC_LINKCTRL)
 289                 goto out;
 290 
 291         (void) memset(payload, 0, sizeof (payload));
 292         req.emr_cmd = MC_CMD_SET_LINK;
 293         req.emr_in_buf = payload;
 294         req.emr_in_length = MC_CMD_SET_LINK_IN_LEN;
 295         req.emr_out_buf = payload;
 296         req.emr_out_length = MC_CMD_SET_LINK_OUT_LEN;
 297 
 298         cap_mask = epp->ep_adv_cap_mask;
 299         MCDI_IN_POPULATE_DWORD_10(req, SET_LINK_IN_CAP,
 300                 PHY_CAP_10HDX, (cap_mask >> EFX_PHY_CAP_10HDX) & 0x1,
 301                 PHY_CAP_10FDX, (cap_mask >> EFX_PHY_CAP_10FDX) & 0x1,
 302                 PHY_CAP_100HDX, (cap_mask >> EFX_PHY_CAP_100HDX) & 0x1,
 303                 PHY_CAP_100FDX, (cap_mask >> EFX_PHY_CAP_100FDX) & 0x1,
 304                 PHY_CAP_1000HDX, (cap_mask >> EFX_PHY_CAP_1000HDX) & 0x1,
 305                 PHY_CAP_1000FDX, (cap_mask >> EFX_PHY_CAP_1000FDX) & 0x1,
 306                 PHY_CAP_10000FDX, (cap_mask >> EFX_PHY_CAP_10000FDX) & 0x1,
 307                 PHY_CAP_PAUSE, (cap_mask >> EFX_PHY_CAP_PAUSE) & 0x1,
 308                 PHY_CAP_ASYM, (cap_mask >> EFX_PHY_CAP_ASYM) & 0x1,
 309                 PHY_CAP_AN, (cap_mask >> EFX_PHY_CAP_AN) & 0x1);
 310         /* Too many fields for for POPULATE macros, so insert this afterwards */
 311         MCDI_IN_SET_DWORD_FIELD(req, SET_LINK_IN_CAP,
 312             PHY_CAP_40000FDX, (cap_mask >> EFX_PHY_CAP_40000FDX) & 0x1);
 313 
 314 #if EFSYS_OPT_LOOPBACK
 315         MCDI_IN_SET_DWORD(req, SET_LINK_IN_LOOPBACK_MODE,
 316                     epp->ep_loopback_type);
 317         switch (epp->ep_loopback_link_mode) {
 318         case EFX_LINK_100FDX:
 319                 speed = 100;
 320                 break;
 321         case EFX_LINK_1000FDX:
 322                 speed = 1000;
 323                 break;
 324         case EFX_LINK_10000FDX:
 325                 speed = 10000;
 326                 break;
 327         case EFX_LINK_40000FDX:
 328                 speed = 40000;
 329                 break;
 330         default:
 331                 speed = 0;
 332         }
 333 #else
 334         MCDI_IN_SET_DWORD(req, SET_LINK_IN_LOOPBACK_MODE, MC_CMD_LOOPBACK_NONE);
 335         speed = 0;
 336 #endif  /* EFSYS_OPT_LOOPBACK */
 337         MCDI_IN_SET_DWORD(req, SET_LINK_IN_LOOPBACK_SPEED, speed);
 338 
 339 #if EFSYS_OPT_PHY_FLAGS
 340         MCDI_IN_SET_DWORD(req, SET_LINK_IN_FLAGS, epp->ep_phy_flags);
 341 #else
 342         MCDI_IN_SET_DWORD(req, SET_LINK_IN_FLAGS, 0);
 343 #endif  /* EFSYS_OPT_PHY_FLAGS */
 344 
 345         efx_mcdi_execute(enp, &req);
 346 
 347         if (req.emr_rc != 0) {
 348                 rc = req.emr_rc;
 349                 goto fail1;
 350         }
 351 
 352         /* And set the blink mode */
 353         (void) memset(payload, 0, sizeof (payload));
 354         req.emr_cmd = MC_CMD_SET_ID_LED;
 355         req.emr_in_buf = payload;
 356         req.emr_in_length = MC_CMD_SET_ID_LED_IN_LEN;
 357         req.emr_out_buf = payload;
 358         req.emr_out_length = MC_CMD_SET_ID_LED_OUT_LEN;
 359 
 360 #if EFSYS_OPT_PHY_LED_CONTROL
 361         switch (epp->ep_phy_led_mode) {
 362         case EFX_PHY_LED_DEFAULT:
 363                 led_mode = MC_CMD_LED_DEFAULT;
 364                 break;
 365         case EFX_PHY_LED_OFF:
 366                 led_mode = MC_CMD_LED_OFF;
 367                 break;
 368         case EFX_PHY_LED_ON:
 369                 led_mode = MC_CMD_LED_ON;
 370                 break;
 371         default:
 372                 EFSYS_ASSERT(0);
 373                 led_mode = MC_CMD_LED_DEFAULT;
 374         }
 375 
 376         MCDI_IN_SET_DWORD(req, SET_ID_LED_IN_STATE, led_mode);
 377 #else
 378         MCDI_IN_SET_DWORD(req, SET_ID_LED_IN_STATE, MC_CMD_LED_DEFAULT);
 379 #endif  /* EFSYS_OPT_PHY_LED_CONTROL */
 380 
 381         efx_mcdi_execute(enp, &req);
 382 
 383         if (req.emr_rc != 0) {
 384                 rc = req.emr_rc;
 385                 goto fail2;
 386         }
 387 out:
 388         return (0);
 389 
 390 fail2:
 391         EFSYS_PROBE(fail2);
 392 fail1:
 393         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 394 
 395         return (rc);
 396 }
 397 
 398         __checkReturn   efx_rc_t
 399 ef10_phy_verify(
 400         __in            efx_nic_t *enp)
 401 {
 402         efx_mcdi_req_t req;
 403         uint8_t payload[MAX(MC_CMD_GET_PHY_STATE_IN_LEN,
 404                             MC_CMD_GET_PHY_STATE_OUT_LEN)];
 405         uint32_t state;
 406         efx_rc_t rc;
 407 
 408         (void) memset(payload, 0, sizeof (payload));
 409         req.emr_cmd = MC_CMD_GET_PHY_STATE;
 410         req.emr_in_buf = payload;
 411         req.emr_in_length = MC_CMD_GET_PHY_STATE_IN_LEN;
 412         req.emr_out_buf = payload;
 413         req.emr_out_length = MC_CMD_GET_PHY_STATE_OUT_LEN;
 414 
 415         efx_mcdi_execute(enp, &req);
 416 
 417         if (req.emr_rc != 0) {
 418                 rc = req.emr_rc;
 419                 goto fail1;
 420         }
 421 
 422         if (req.emr_out_length_used < MC_CMD_GET_PHY_STATE_OUT_LEN) {
 423                 rc = EMSGSIZE;
 424                 goto fail2;
 425         }
 426 
 427         state = MCDI_OUT_DWORD(req, GET_PHY_STATE_OUT_STATE);
 428         if (state != MC_CMD_PHY_STATE_OK) {
 429                 if (state != MC_CMD_PHY_STATE_ZOMBIE)
 430                         EFSYS_PROBE1(mc_pcol_error, int, state);
 431                 rc = ENOTACTIVE;
 432                 goto fail3;
 433         }
 434 
 435         return (0);
 436 
 437 fail3:
 438         EFSYS_PROBE(fail3);
 439 fail2:
 440         EFSYS_PROBE(fail2);
 441 fail1:
 442         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 443 
 444         return (rc);
 445 }
 446 
 447         __checkReturn   efx_rc_t
 448 ef10_phy_oui_get(
 449         __in            efx_nic_t *enp,
 450         __out           uint32_t *ouip)
 451 {
 452         _NOTE(ARGUNUSED(enp, ouip))
 453 
 454         return (ENOTSUP);
 455 }
 456 
 457 #if EFSYS_OPT_PHY_STATS
 458 
 459         __checkReturn                           efx_rc_t
 460 ef10_phy_stats_update(
 461         __in                                    efx_nic_t *enp,
 462         __in                                    efsys_mem_t *esmp,
 463         __inout_ecount(EFX_PHY_NSTATS)          uint32_t *stat)
 464 {
 465         /* TBD: no stats support in firmware yet */
 466         _NOTE(ARGUNUSED(enp, esmp))
 467         (void) memset(stat, 0, EFX_PHY_NSTATS * sizeof (*stat));
 468 
 469         return (0);
 470 }
 471 
 472 #endif  /* EFSYS_OPT_PHY_STATS */
 473 
 474 #endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */