linux/drivers/net/phy/aquantia_main.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Driver for Aquantia PHY
   4 *
   5 * Author: Shaohui Xie <Shaohui.Xie@freescale.com>
   6 *
   7 * Copyright 2015 Freescale Semiconductor, Inc.
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/module.h>
  12#include <linux/delay.h>
  13#include <linux/bitfield.h>
  14#include <linux/phy.h>
  15
  16#include "aquantia.h"
  17
  18#define PHY_ID_AQ1202   0x03a1b445
  19#define PHY_ID_AQ2104   0x03a1b460
  20#define PHY_ID_AQR105   0x03a1b4a2
  21#define PHY_ID_AQR106   0x03a1b4d0
  22#define PHY_ID_AQR107   0x03a1b4e0
  23#define PHY_ID_AQCS109  0x03a1b5c2
  24#define PHY_ID_AQR405   0x03a1b4b0
  25
  26#define MDIO_PHYXS_VEND_IF_STATUS               0xe812
  27#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_MASK     GENMASK(7, 3)
  28#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_KR       0
  29#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_XFI      2
  30#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_USXGMII  3
  31#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_SGMII    6
  32#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_OCSGMII  10
  33
  34#define MDIO_AN_VEND_PROV                       0xc400
  35#define MDIO_AN_VEND_PROV_1000BASET_FULL        BIT(15)
  36#define MDIO_AN_VEND_PROV_1000BASET_HALF        BIT(14)
  37#define MDIO_AN_VEND_PROV_DOWNSHIFT_EN          BIT(4)
  38#define MDIO_AN_VEND_PROV_DOWNSHIFT_MASK        GENMASK(3, 0)
  39#define MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT        4
  40
  41#define MDIO_AN_TX_VEND_STATUS1                 0xc800
  42#define MDIO_AN_TX_VEND_STATUS1_RATE_MASK       GENMASK(3, 1)
  43#define MDIO_AN_TX_VEND_STATUS1_10BASET         0
  44#define MDIO_AN_TX_VEND_STATUS1_100BASETX       1
  45#define MDIO_AN_TX_VEND_STATUS1_1000BASET       2
  46#define MDIO_AN_TX_VEND_STATUS1_10GBASET        3
  47#define MDIO_AN_TX_VEND_STATUS1_2500BASET       4
  48#define MDIO_AN_TX_VEND_STATUS1_5000BASET       5
  49#define MDIO_AN_TX_VEND_STATUS1_FULL_DUPLEX     BIT(0)
  50
  51#define MDIO_AN_TX_VEND_INT_STATUS1             0xcc00
  52#define MDIO_AN_TX_VEND_INT_STATUS1_DOWNSHIFT   BIT(1)
  53
  54#define MDIO_AN_TX_VEND_INT_STATUS2             0xcc01
  55
  56#define MDIO_AN_TX_VEND_INT_MASK2               0xd401
  57#define MDIO_AN_TX_VEND_INT_MASK2_LINK          BIT(0)
  58
  59#define MDIO_AN_RX_LP_STAT1                     0xe820
  60#define MDIO_AN_RX_LP_STAT1_1000BASET_FULL      BIT(15)
  61#define MDIO_AN_RX_LP_STAT1_1000BASET_HALF      BIT(14)
  62#define MDIO_AN_RX_LP_STAT1_SHORT_REACH         BIT(13)
  63#define MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT    BIT(12)
  64#define MDIO_AN_RX_LP_STAT1_AQ_PHY              BIT(2)
  65
  66#define MDIO_AN_RX_LP_STAT4                     0xe823
  67#define MDIO_AN_RX_LP_STAT4_FW_MAJOR            GENMASK(15, 8)
  68#define MDIO_AN_RX_LP_STAT4_FW_MINOR            GENMASK(7, 0)
  69
  70#define MDIO_AN_RX_VEND_STAT3                   0xe832
  71#define MDIO_AN_RX_VEND_STAT3_AFR               BIT(0)
  72
  73/* MDIO_MMD_C22EXT */
  74#define MDIO_C22EXT_STAT_SGMII_RX_GOOD_FRAMES           0xd292
  75#define MDIO_C22EXT_STAT_SGMII_RX_BAD_FRAMES            0xd294
  76#define MDIO_C22EXT_STAT_SGMII_RX_FALSE_CARRIER         0xd297
  77#define MDIO_C22EXT_STAT_SGMII_TX_GOOD_FRAMES           0xd313
  78#define MDIO_C22EXT_STAT_SGMII_TX_BAD_FRAMES            0xd315
  79#define MDIO_C22EXT_STAT_SGMII_TX_FALSE_CARRIER         0xd317
  80#define MDIO_C22EXT_STAT_SGMII_TX_COLLISIONS            0xd318
  81#define MDIO_C22EXT_STAT_SGMII_TX_LINE_COLLISIONS       0xd319
  82#define MDIO_C22EXT_STAT_SGMII_TX_FRAME_ALIGN_ERR       0xd31a
  83#define MDIO_C22EXT_STAT_SGMII_TX_RUNT_FRAMES           0xd31b
  84
  85/* Vendor specific 1, MDIO_MMD_VEND1 */
  86#define VEND1_GLOBAL_FW_ID                      0x0020
  87#define VEND1_GLOBAL_FW_ID_MAJOR                GENMASK(15, 8)
  88#define VEND1_GLOBAL_FW_ID_MINOR                GENMASK(7, 0)
  89
  90#define VEND1_GLOBAL_RSVD_STAT1                 0xc885
  91#define VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID     GENMASK(7, 4)
  92#define VEND1_GLOBAL_RSVD_STAT1_PROV_ID         GENMASK(3, 0)
  93
  94#define VEND1_GLOBAL_RSVD_STAT9                 0xc88d
  95#define VEND1_GLOBAL_RSVD_STAT9_MODE            GENMASK(7, 0)
  96#define VEND1_GLOBAL_RSVD_STAT9_1000BT2         0x23
  97
  98#define VEND1_GLOBAL_INT_STD_STATUS             0xfc00
  99#define VEND1_GLOBAL_INT_VEND_STATUS            0xfc01
 100
 101#define VEND1_GLOBAL_INT_STD_MASK               0xff00
 102#define VEND1_GLOBAL_INT_STD_MASK_PMA1          BIT(15)
 103#define VEND1_GLOBAL_INT_STD_MASK_PMA2          BIT(14)
 104#define VEND1_GLOBAL_INT_STD_MASK_PCS1          BIT(13)
 105#define VEND1_GLOBAL_INT_STD_MASK_PCS2          BIT(12)
 106#define VEND1_GLOBAL_INT_STD_MASK_PCS3          BIT(11)
 107#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS1       BIT(10)
 108#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS2       BIT(9)
 109#define VEND1_GLOBAL_INT_STD_MASK_AN1           BIT(8)
 110#define VEND1_GLOBAL_INT_STD_MASK_AN2           BIT(7)
 111#define VEND1_GLOBAL_INT_STD_MASK_GBE           BIT(6)
 112#define VEND1_GLOBAL_INT_STD_MASK_ALL           BIT(0)
 113
 114#define VEND1_GLOBAL_INT_VEND_MASK              0xff01
 115#define VEND1_GLOBAL_INT_VEND_MASK_PMA          BIT(15)
 116#define VEND1_GLOBAL_INT_VEND_MASK_PCS          BIT(14)
 117#define VEND1_GLOBAL_INT_VEND_MASK_PHY_XS       BIT(13)
 118#define VEND1_GLOBAL_INT_VEND_MASK_AN           BIT(12)
 119#define VEND1_GLOBAL_INT_VEND_MASK_GBE          BIT(11)
 120#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL1      BIT(2)
 121#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL2      BIT(1)
 122#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3      BIT(0)
 123
 124struct aqr107_hw_stat {
 125        const char *name;
 126        int reg;
 127        int size;
 128};
 129
 130#define SGMII_STAT(n, r, s) { n, MDIO_C22EXT_STAT_SGMII_ ## r, s }
 131static const struct aqr107_hw_stat aqr107_hw_stats[] = {
 132        SGMII_STAT("sgmii_rx_good_frames",          RX_GOOD_FRAMES,     26),
 133        SGMII_STAT("sgmii_rx_bad_frames",           RX_BAD_FRAMES,      26),
 134        SGMII_STAT("sgmii_rx_false_carrier_events", RX_FALSE_CARRIER,    8),
 135        SGMII_STAT("sgmii_tx_good_frames",          TX_GOOD_FRAMES,     26),
 136        SGMII_STAT("sgmii_tx_bad_frames",           TX_BAD_FRAMES,      26),
 137        SGMII_STAT("sgmii_tx_false_carrier_events", TX_FALSE_CARRIER,    8),
 138        SGMII_STAT("sgmii_tx_collisions",           TX_COLLISIONS,       8),
 139        SGMII_STAT("sgmii_tx_line_collisions",      TX_LINE_COLLISIONS,  8),
 140        SGMII_STAT("sgmii_tx_frame_alignment_err",  TX_FRAME_ALIGN_ERR, 16),
 141        SGMII_STAT("sgmii_tx_runt_frames",          TX_RUNT_FRAMES,     22),
 142};
 143#define AQR107_SGMII_STAT_SZ ARRAY_SIZE(aqr107_hw_stats)
 144
 145struct aqr107_priv {
 146        u64 sgmii_stats[AQR107_SGMII_STAT_SZ];
 147};
 148
 149static int aqr107_get_sset_count(struct phy_device *phydev)
 150{
 151        return AQR107_SGMII_STAT_SZ;
 152}
 153
 154static void aqr107_get_strings(struct phy_device *phydev, u8 *data)
 155{
 156        int i;
 157
 158        for (i = 0; i < AQR107_SGMII_STAT_SZ; i++)
 159                strscpy(data + i * ETH_GSTRING_LEN, aqr107_hw_stats[i].name,
 160                        ETH_GSTRING_LEN);
 161}
 162
 163static u64 aqr107_get_stat(struct phy_device *phydev, int index)
 164{
 165        const struct aqr107_hw_stat *stat = aqr107_hw_stats + index;
 166        int len_l = min(stat->size, 16);
 167        int len_h = stat->size - len_l;
 168        u64 ret;
 169        int val;
 170
 171        val = phy_read_mmd(phydev, MDIO_MMD_C22EXT, stat->reg);
 172        if (val < 0)
 173                return U64_MAX;
 174
 175        ret = val & GENMASK(len_l - 1, 0);
 176        if (len_h) {
 177                val = phy_read_mmd(phydev, MDIO_MMD_C22EXT, stat->reg + 1);
 178                if (val < 0)
 179                        return U64_MAX;
 180
 181                ret += (val & GENMASK(len_h - 1, 0)) << 16;
 182        }
 183
 184        return ret;
 185}
 186
 187static void aqr107_get_stats(struct phy_device *phydev,
 188                             struct ethtool_stats *stats, u64 *data)
 189{
 190        struct aqr107_priv *priv = phydev->priv;
 191        u64 val;
 192        int i;
 193
 194        for (i = 0; i < AQR107_SGMII_STAT_SZ; i++) {
 195                val = aqr107_get_stat(phydev, i);
 196                if (val == U64_MAX)
 197                        phydev_err(phydev, "Reading HW Statistics failed for %s\n",
 198                                   aqr107_hw_stats[i].name);
 199                else
 200                        priv->sgmii_stats[i] += val;
 201
 202                data[i] = priv->sgmii_stats[i];
 203        }
 204}
 205
 206static int aqr_config_aneg(struct phy_device *phydev)
 207{
 208        bool changed = false;
 209        u16 reg;
 210        int ret;
 211
 212        if (phydev->autoneg == AUTONEG_DISABLE)
 213                return genphy_c45_pma_setup_forced(phydev);
 214
 215        ret = genphy_c45_an_config_aneg(phydev);
 216        if (ret < 0)
 217                return ret;
 218        if (ret > 0)
 219                changed = true;
 220
 221        /* Clause 45 has no standardized support for 1000BaseT, therefore
 222         * use vendor registers for this mode.
 223         */
 224        reg = 0;
 225        if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
 226                              phydev->advertising))
 227                reg |= MDIO_AN_VEND_PROV_1000BASET_FULL;
 228
 229        if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
 230                              phydev->advertising))
 231                reg |= MDIO_AN_VEND_PROV_1000BASET_HALF;
 232
 233        ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV,
 234                                     MDIO_AN_VEND_PROV_1000BASET_HALF |
 235                                     MDIO_AN_VEND_PROV_1000BASET_FULL, reg);
 236        if (ret < 0)
 237                return ret;
 238        if (ret > 0)
 239                changed = true;
 240
 241        return genphy_c45_check_and_restart_aneg(phydev, changed);
 242}
 243
 244static int aqr_config_intr(struct phy_device *phydev)
 245{
 246        bool en = phydev->interrupts == PHY_INTERRUPT_ENABLED;
 247        int err;
 248
 249        err = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_MASK2,
 250                            en ? MDIO_AN_TX_VEND_INT_MASK2_LINK : 0);
 251        if (err < 0)
 252                return err;
 253
 254        err = phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_STD_MASK,
 255                            en ? VEND1_GLOBAL_INT_STD_MASK_ALL : 0);
 256        if (err < 0)
 257                return err;
 258
 259        return phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_VEND_MASK,
 260                             en ? VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 |
 261                             VEND1_GLOBAL_INT_VEND_MASK_AN : 0);
 262}
 263
 264static int aqr_ack_interrupt(struct phy_device *phydev)
 265{
 266        int reg;
 267
 268        reg = phy_read_mmd(phydev, MDIO_MMD_AN,
 269                           MDIO_AN_TX_VEND_INT_STATUS2);
 270        return (reg < 0) ? reg : 0;
 271}
 272
 273static int aqr_read_status(struct phy_device *phydev)
 274{
 275        int val;
 276
 277        if (phydev->autoneg == AUTONEG_ENABLE) {
 278                val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT1);
 279                if (val < 0)
 280                        return val;
 281
 282                linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
 283                                 phydev->lp_advertising,
 284                                 val & MDIO_AN_RX_LP_STAT1_1000BASET_FULL);
 285                linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
 286                                 phydev->lp_advertising,
 287                                 val & MDIO_AN_RX_LP_STAT1_1000BASET_HALF);
 288        }
 289
 290        return genphy_c45_read_status(phydev);
 291}
 292
 293static int aqr107_read_downshift_event(struct phy_device *phydev)
 294{
 295        int val;
 296
 297        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_STATUS1);
 298        if (val < 0)
 299                return val;
 300
 301        return !!(val & MDIO_AN_TX_VEND_INT_STATUS1_DOWNSHIFT);
 302}
 303
 304static int aqr107_read_rate(struct phy_device *phydev)
 305{
 306        int val;
 307
 308        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_STATUS1);
 309        if (val < 0)
 310                return val;
 311
 312        switch (FIELD_GET(MDIO_AN_TX_VEND_STATUS1_RATE_MASK, val)) {
 313        case MDIO_AN_TX_VEND_STATUS1_10BASET:
 314                phydev->speed = SPEED_10;
 315                break;
 316        case MDIO_AN_TX_VEND_STATUS1_100BASETX:
 317                phydev->speed = SPEED_100;
 318                break;
 319        case MDIO_AN_TX_VEND_STATUS1_1000BASET:
 320                phydev->speed = SPEED_1000;
 321                break;
 322        case MDIO_AN_TX_VEND_STATUS1_2500BASET:
 323                phydev->speed = SPEED_2500;
 324                break;
 325        case MDIO_AN_TX_VEND_STATUS1_5000BASET:
 326                phydev->speed = SPEED_5000;
 327                break;
 328        case MDIO_AN_TX_VEND_STATUS1_10GBASET:
 329                phydev->speed = SPEED_10000;
 330                break;
 331        default:
 332                phydev->speed = SPEED_UNKNOWN;
 333                break;
 334        }
 335
 336        if (val & MDIO_AN_TX_VEND_STATUS1_FULL_DUPLEX)
 337                phydev->duplex = DUPLEX_FULL;
 338        else
 339                phydev->duplex = DUPLEX_HALF;
 340
 341        return 0;
 342}
 343
 344static int aqr107_read_status(struct phy_device *phydev)
 345{
 346        int val, ret;
 347
 348        ret = aqr_read_status(phydev);
 349        if (ret)
 350                return ret;
 351
 352        if (!phydev->link || phydev->autoneg == AUTONEG_DISABLE)
 353                return 0;
 354
 355        val = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_VEND_IF_STATUS);
 356        if (val < 0)
 357                return val;
 358
 359        switch (FIELD_GET(MDIO_PHYXS_VEND_IF_STATUS_TYPE_MASK, val)) {
 360        case MDIO_PHYXS_VEND_IF_STATUS_TYPE_KR:
 361        case MDIO_PHYXS_VEND_IF_STATUS_TYPE_XFI:
 362                phydev->interface = PHY_INTERFACE_MODE_10GKR;
 363                break;
 364        case MDIO_PHYXS_VEND_IF_STATUS_TYPE_USXGMII:
 365                phydev->interface = PHY_INTERFACE_MODE_USXGMII;
 366                break;
 367        case MDIO_PHYXS_VEND_IF_STATUS_TYPE_SGMII:
 368                phydev->interface = PHY_INTERFACE_MODE_SGMII;
 369                break;
 370        case MDIO_PHYXS_VEND_IF_STATUS_TYPE_OCSGMII:
 371                phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
 372                break;
 373        default:
 374                phydev->interface = PHY_INTERFACE_MODE_NA;
 375                break;
 376        }
 377
 378        val = aqr107_read_downshift_event(phydev);
 379        if (val <= 0)
 380                return val;
 381
 382        phydev_warn(phydev, "Downshift occurred! Cabling may be defective.\n");
 383
 384        /* Read downshifted rate from vendor register */
 385        return aqr107_read_rate(phydev);
 386}
 387
 388static int aqr107_get_downshift(struct phy_device *phydev, u8 *data)
 389{
 390        int val, cnt, enable;
 391
 392        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV);
 393        if (val < 0)
 394                return val;
 395
 396        enable = FIELD_GET(MDIO_AN_VEND_PROV_DOWNSHIFT_EN, val);
 397        cnt = FIELD_GET(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, val);
 398
 399        *data = enable && cnt ? cnt : DOWNSHIFT_DEV_DISABLE;
 400
 401        return 0;
 402}
 403
 404static int aqr107_set_downshift(struct phy_device *phydev, u8 cnt)
 405{
 406        int val = 0;
 407
 408        if (!FIELD_FIT(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, cnt))
 409                return -E2BIG;
 410
 411        if (cnt != DOWNSHIFT_DEV_DISABLE) {
 412                val = MDIO_AN_VEND_PROV_DOWNSHIFT_EN;
 413                val |= FIELD_PREP(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, cnt);
 414        }
 415
 416        return phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV,
 417                              MDIO_AN_VEND_PROV_DOWNSHIFT_EN |
 418                              MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, val);
 419}
 420
 421static int aqr107_get_tunable(struct phy_device *phydev,
 422                              struct ethtool_tunable *tuna, void *data)
 423{
 424        switch (tuna->id) {
 425        case ETHTOOL_PHY_DOWNSHIFT:
 426                return aqr107_get_downshift(phydev, data);
 427        default:
 428                return -EOPNOTSUPP;
 429        }
 430}
 431
 432static int aqr107_set_tunable(struct phy_device *phydev,
 433                              struct ethtool_tunable *tuna, const void *data)
 434{
 435        switch (tuna->id) {
 436        case ETHTOOL_PHY_DOWNSHIFT:
 437                return aqr107_set_downshift(phydev, *(const u8 *)data);
 438        default:
 439                return -EOPNOTSUPP;
 440        }
 441}
 442
 443/* If we configure settings whilst firmware is still initializing the chip,
 444 * then these settings may be overwritten. Therefore make sure chip
 445 * initialization has completed. Use presence of the firmware ID as
 446 * indicator for initialization having completed.
 447 * The chip also provides a "reset completed" bit, but it's cleared after
 448 * read. Therefore function would time out if called again.
 449 */
 450static int aqr107_wait_reset_complete(struct phy_device *phydev)
 451{
 452        int val, retries = 100;
 453
 454        do {
 455                val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_FW_ID);
 456                if (val < 0)
 457                        return val;
 458                msleep(20);
 459        } while (!val && --retries);
 460
 461        return val ? 0 : -ETIMEDOUT;
 462}
 463
 464static void aqr107_chip_info(struct phy_device *phydev)
 465{
 466        u8 fw_major, fw_minor, build_id, prov_id;
 467        int val;
 468
 469        val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_FW_ID);
 470        if (val < 0)
 471                return;
 472
 473        fw_major = FIELD_GET(VEND1_GLOBAL_FW_ID_MAJOR, val);
 474        fw_minor = FIELD_GET(VEND1_GLOBAL_FW_ID_MINOR, val);
 475
 476        val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_RSVD_STAT1);
 477        if (val < 0)
 478                return;
 479
 480        build_id = FIELD_GET(VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID, val);
 481        prov_id = FIELD_GET(VEND1_GLOBAL_RSVD_STAT1_PROV_ID, val);
 482
 483        phydev_dbg(phydev, "FW %u.%u, Build %u, Provisioning %u\n",
 484                   fw_major, fw_minor, build_id, prov_id);
 485}
 486
 487static int aqr107_config_init(struct phy_device *phydev)
 488{
 489        int ret;
 490
 491        /* Check that the PHY interface type is compatible */
 492        if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
 493            phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
 494            phydev->interface != PHY_INTERFACE_MODE_XGMII &&
 495            phydev->interface != PHY_INTERFACE_MODE_USXGMII &&
 496            phydev->interface != PHY_INTERFACE_MODE_10GKR)
 497                return -ENODEV;
 498
 499        WARN(phydev->interface == PHY_INTERFACE_MODE_XGMII,
 500             "Your devicetree is out of date, please update it. The AQR107 family doesn't support XGMII, maybe you mean USXGMII.\n");
 501
 502        ret = aqr107_wait_reset_complete(phydev);
 503        if (!ret)
 504                aqr107_chip_info(phydev);
 505
 506        /* ensure that a latched downshift event is cleared */
 507        aqr107_read_downshift_event(phydev);
 508
 509        return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
 510}
 511
 512static int aqcs109_config_init(struct phy_device *phydev)
 513{
 514        int ret;
 515
 516        /* Check that the PHY interface type is compatible */
 517        if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
 518            phydev->interface != PHY_INTERFACE_MODE_2500BASEX)
 519                return -ENODEV;
 520
 521        ret = aqr107_wait_reset_complete(phydev);
 522        if (!ret)
 523                aqr107_chip_info(phydev);
 524
 525        /* AQCS109 belongs to a chip family partially supporting 10G and 5G.
 526         * PMA speed ability bits are the same for all members of the family,
 527         * AQCS109 however supports speeds up to 2.5G only.
 528         */
 529        ret = phy_set_max_speed(phydev, SPEED_2500);
 530        if (ret)
 531                return ret;
 532
 533        /* ensure that a latched downshift event is cleared */
 534        aqr107_read_downshift_event(phydev);
 535
 536        return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
 537}
 538
 539static void aqr107_link_change_notify(struct phy_device *phydev)
 540{
 541        u8 fw_major, fw_minor;
 542        bool downshift, short_reach, afr;
 543        int mode, val;
 544
 545        if (phydev->state != PHY_RUNNING || phydev->autoneg == AUTONEG_DISABLE)
 546                return;
 547
 548        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT1);
 549        /* call failed or link partner is no Aquantia PHY */
 550        if (val < 0 || !(val & MDIO_AN_RX_LP_STAT1_AQ_PHY))
 551                return;
 552
 553        short_reach = val & MDIO_AN_RX_LP_STAT1_SHORT_REACH;
 554        downshift = val & MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT;
 555
 556        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT4);
 557        if (val < 0)
 558                return;
 559
 560        fw_major = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MAJOR, val);
 561        fw_minor = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MINOR, val);
 562
 563        val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_VEND_STAT3);
 564        if (val < 0)
 565                return;
 566
 567        afr = val & MDIO_AN_RX_VEND_STAT3_AFR;
 568
 569        phydev_dbg(phydev, "Link partner is Aquantia PHY, FW %u.%u%s%s%s\n",
 570                   fw_major, fw_minor,
 571                   short_reach ? ", short reach mode" : "",
 572                   downshift ? ", fast-retrain downshift advertised" : "",
 573                   afr ? ", fast reframe advertised" : "");
 574
 575        val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_RSVD_STAT9);
 576        if (val < 0)
 577                return;
 578
 579        mode = FIELD_GET(VEND1_GLOBAL_RSVD_STAT9_MODE, val);
 580        if (mode == VEND1_GLOBAL_RSVD_STAT9_1000BT2)
 581                phydev_info(phydev, "Aquantia 1000Base-T2 mode active\n");
 582}
 583
 584static int aqr107_suspend(struct phy_device *phydev)
 585{
 586        return phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MDIO_CTRL1,
 587                                MDIO_CTRL1_LPOWER);
 588}
 589
 590static int aqr107_resume(struct phy_device *phydev)
 591{
 592        return phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MDIO_CTRL1,
 593                                  MDIO_CTRL1_LPOWER);
 594}
 595
 596static int aqr107_probe(struct phy_device *phydev)
 597{
 598        phydev->priv = devm_kzalloc(&phydev->mdio.dev,
 599                                    sizeof(struct aqr107_priv), GFP_KERNEL);
 600        if (!phydev->priv)
 601                return -ENOMEM;
 602
 603        return aqr_hwmon_probe(phydev);
 604}
 605
 606static struct phy_driver aqr_driver[] = {
 607{
 608        PHY_ID_MATCH_MODEL(PHY_ID_AQ1202),
 609        .name           = "Aquantia AQ1202",
 610        .config_aneg    = aqr_config_aneg,
 611        .config_intr    = aqr_config_intr,
 612        .ack_interrupt  = aqr_ack_interrupt,
 613        .read_status    = aqr_read_status,
 614},
 615{
 616        PHY_ID_MATCH_MODEL(PHY_ID_AQ2104),
 617        .name           = "Aquantia AQ2104",
 618        .config_aneg    = aqr_config_aneg,
 619        .config_intr    = aqr_config_intr,
 620        .ack_interrupt  = aqr_ack_interrupt,
 621        .read_status    = aqr_read_status,
 622},
 623{
 624        PHY_ID_MATCH_MODEL(PHY_ID_AQR105),
 625        .name           = "Aquantia AQR105",
 626        .config_aneg    = aqr_config_aneg,
 627        .config_intr    = aqr_config_intr,
 628        .ack_interrupt  = aqr_ack_interrupt,
 629        .read_status    = aqr_read_status,
 630},
 631{
 632        PHY_ID_MATCH_MODEL(PHY_ID_AQR106),
 633        .name           = "Aquantia AQR106",
 634        .config_aneg    = aqr_config_aneg,
 635        .config_intr    = aqr_config_intr,
 636        .ack_interrupt  = aqr_ack_interrupt,
 637        .read_status    = aqr_read_status,
 638},
 639{
 640        PHY_ID_MATCH_MODEL(PHY_ID_AQR107),
 641        .name           = "Aquantia AQR107",
 642        .probe          = aqr107_probe,
 643        .config_init    = aqr107_config_init,
 644        .config_aneg    = aqr_config_aneg,
 645        .config_intr    = aqr_config_intr,
 646        .ack_interrupt  = aqr_ack_interrupt,
 647        .read_status    = aqr107_read_status,
 648        .get_tunable    = aqr107_get_tunable,
 649        .set_tunable    = aqr107_set_tunable,
 650        .suspend        = aqr107_suspend,
 651        .resume         = aqr107_resume,
 652        .get_sset_count = aqr107_get_sset_count,
 653        .get_strings    = aqr107_get_strings,
 654        .get_stats      = aqr107_get_stats,
 655        .link_change_notify = aqr107_link_change_notify,
 656},
 657{
 658        PHY_ID_MATCH_MODEL(PHY_ID_AQCS109),
 659        .name           = "Aquantia AQCS109",
 660        .probe          = aqr107_probe,
 661        .config_init    = aqcs109_config_init,
 662        .config_aneg    = aqr_config_aneg,
 663        .config_intr    = aqr_config_intr,
 664        .ack_interrupt  = aqr_ack_interrupt,
 665        .read_status    = aqr107_read_status,
 666        .get_tunable    = aqr107_get_tunable,
 667        .set_tunable    = aqr107_set_tunable,
 668        .suspend        = aqr107_suspend,
 669        .resume         = aqr107_resume,
 670        .get_sset_count = aqr107_get_sset_count,
 671        .get_strings    = aqr107_get_strings,
 672        .get_stats      = aqr107_get_stats,
 673        .link_change_notify = aqr107_link_change_notify,
 674},
 675{
 676        PHY_ID_MATCH_MODEL(PHY_ID_AQR405),
 677        .name           = "Aquantia AQR405",
 678        .config_aneg    = aqr_config_aneg,
 679        .config_intr    = aqr_config_intr,
 680        .ack_interrupt  = aqr_ack_interrupt,
 681        .read_status    = aqr_read_status,
 682},
 683};
 684
 685module_phy_driver(aqr_driver);
 686
 687static struct mdio_device_id __maybe_unused aqr_tbl[] = {
 688        { PHY_ID_MATCH_MODEL(PHY_ID_AQ1202) },
 689        { PHY_ID_MATCH_MODEL(PHY_ID_AQ2104) },
 690        { PHY_ID_MATCH_MODEL(PHY_ID_AQR105) },
 691        { PHY_ID_MATCH_MODEL(PHY_ID_AQR106) },
 692        { PHY_ID_MATCH_MODEL(PHY_ID_AQR107) },
 693        { PHY_ID_MATCH_MODEL(PHY_ID_AQCS109) },
 694        { PHY_ID_MATCH_MODEL(PHY_ID_AQR405) },
 695        { }
 696};
 697
 698MODULE_DEVICE_TABLE(mdio, aqr_tbl);
 699
 700MODULE_DESCRIPTION("Aquantia PHY driver");
 701MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
 702MODULE_LICENSE("GPL v2");
 703