2 * Marvell 10G 88x3310 PHY driver
4 * Based upon the ID registers, this PHY appears to be a mixture of IPs
5 * from two different companies.
7 * There appears to be several different data paths through the PHY which
8 * are automatically managed by the PHY. The following has been determined
9 * via observation and experimentation for a setup using single-lane Serdes:
11 * SGMII PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for <= 1G)
12 * 10GBASE-KR PHYXS -- BASE-T PCS -- 10G PMA -- AN -- Copper (for 10G)
13 * 10GBASE-KR PHYXS -- BASE-R PCS -- Fiber
15 * With XAUI, observation shows:
17 * XAUI PHYXS -- <appropriate PCS as above>
19 * and no switching of the host interface mode occurs.
21 * If both the fiber and copper ports are connected, the first to gain
22 * link takes priority and the other port is completely locked out.
24 #include <linux/ctype.h>
25 #include <linux/hwmon.h>
26 #include <linux/marvell_phy.h>
27 #include <linux/phy.h>
29 #define MDIO_AN_10GBT_CTRL_ADV_NBT_MASK 0x01e0
32 MV_PCS_BASE_T = 0x0000,
33 MV_PCS_BASE_R = 0x1000,
34 MV_PCS_1000BASEX = 0x2000,
36 MV_PCS_PAIRSWAP = 0x8182,
37 MV_PCS_PAIRSWAP_MASK = 0x0003,
38 MV_PCS_PAIRSWAP_AB = 0x0002,
39 MV_PCS_PAIRSWAP_NONE = 0x0003,
41 /* These registers appear at 0x800X and 0xa00X - the 0xa00X control
42 * registers appear to set themselves to the 0x800X when AN is
43 * restarted, but status registers appear readable from either.
45 MV_AN_CTRL1000 = 0x8000, /* 1000base-T control register */
46 MV_AN_STAT1000 = 0x8001, /* 1000base-T status register */
48 /* Vendor2 MMD registers */
49 MV_V2_TEMP_CTRL = 0xf08a,
50 MV_V2_TEMP_CTRL_MASK = 0xc000,
51 MV_V2_TEMP_CTRL_SAMPLE = 0x0000,
52 MV_V2_TEMP_CTRL_DISABLE = 0xc000,
54 MV_V2_TEMP_UNKNOWN = 0x9600, /* unknown function */
58 struct device *hwmon_dev;
62 static int mv3310_modify(struct phy_device *phydev, int devad, u16 reg,
67 old = phy_read_mmd(phydev, devad, reg);
71 val = (old & ~mask) | (bits & mask);
75 ret = phy_write_mmd(phydev, devad, reg, val);
77 return ret < 0 ? ret : 1;
81 static umode_t mv3310_hwmon_is_visible(const void *data,
82 enum hwmon_sensor_types type,
83 u32 attr, int channel)
85 if (type == hwmon_chip && attr == hwmon_chip_update_interval)
87 if (type == hwmon_temp && attr == hwmon_temp_input)
92 static int mv3310_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
93 u32 attr, int channel, long *value)
95 struct phy_device *phydev = dev_get_drvdata(dev);
98 if (type == hwmon_chip && attr == hwmon_chip_update_interval) {
99 *value = MSEC_PER_SEC;
103 if (type == hwmon_temp && attr == hwmon_temp_input) {
104 temp = phy_read_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP);
108 *value = ((temp & 0xff) - 75) * 1000;
116 static const struct hwmon_ops mv3310_hwmon_ops = {
117 .is_visible = mv3310_hwmon_is_visible,
118 .read = mv3310_hwmon_read,
121 static u32 mv3310_hwmon_chip_config[] = {
122 HWMON_C_REGISTER_TZ | HWMON_C_UPDATE_INTERVAL,
126 static const struct hwmon_channel_info mv3310_hwmon_chip = {
128 .config = mv3310_hwmon_chip_config,
131 static u32 mv3310_hwmon_temp_config[] = {
136 static const struct hwmon_channel_info mv3310_hwmon_temp = {
138 .config = mv3310_hwmon_temp_config,
141 static const struct hwmon_channel_info *mv3310_hwmon_info[] = {
147 static const struct hwmon_chip_info mv3310_hwmon_chip_info = {
148 .ops = &mv3310_hwmon_ops,
149 .info = mv3310_hwmon_info,
152 static int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
157 ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, MV_V2_TEMP,
162 val = enable ? MV_V2_TEMP_CTRL_SAMPLE : MV_V2_TEMP_CTRL_DISABLE;
163 ret = mv3310_modify(phydev, MDIO_MMD_VEND2, MV_V2_TEMP_CTRL,
164 MV_V2_TEMP_CTRL_MASK, val);
166 return ret < 0 ? ret : 0;
169 static void mv3310_hwmon_disable(void *data)
171 struct phy_device *phydev = data;
173 mv3310_hwmon_config(phydev, false);
176 static int mv3310_hwmon_probe(struct phy_device *phydev)
178 struct device *dev = &phydev->mdio.dev;
179 struct mv3310_priv *priv = dev_get_drvdata(&phydev->mdio.dev);
182 priv->hwmon_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL);
183 if (!priv->hwmon_name)
186 for (i = j = 0; priv->hwmon_name[i]; i++) {
187 if (isalnum(priv->hwmon_name[i])) {
189 priv->hwmon_name[j] = priv->hwmon_name[i];
193 priv->hwmon_name[j] = '\0';
195 ret = mv3310_hwmon_config(phydev, true);
199 ret = devm_add_action_or_reset(dev, mv3310_hwmon_disable, phydev);
203 priv->hwmon_dev = devm_hwmon_device_register_with_info(dev,
204 priv->hwmon_name, phydev,
205 &mv3310_hwmon_chip_info, NULL);
207 return PTR_ERR_OR_ZERO(priv->hwmon_dev);
210 static inline int mv3310_hwmon_config(struct phy_device *phydev, bool enable)
215 static int mv3310_hwmon_probe(struct phy_device *phydev)
221 static int mv3310_probe(struct phy_device *phydev)
223 struct mv3310_priv *priv;
224 u32 mmd_mask = MDIO_DEVS_PMAPMD | MDIO_DEVS_AN;
227 if (!phydev->is_c45 ||
228 (phydev->c45_ids.devices_in_package & mmd_mask) != mmd_mask)
231 priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
235 dev_set_drvdata(&phydev->mdio.dev, priv);
237 ret = mv3310_hwmon_probe(phydev);
244 static int mv3310_suspend(struct phy_device *phydev)
249 static int mv3310_resume(struct phy_device *phydev)
251 return mv3310_hwmon_config(phydev, true);
254 static int mv3310_config_init(struct phy_device *phydev)
256 __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
259 /* Check that the PHY interface type is compatible */
260 if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
261 phydev->interface != PHY_INTERFACE_MODE_XAUI &&
262 phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
263 phydev->interface != PHY_INTERFACE_MODE_10GKR)
266 __set_bit(ETHTOOL_LINK_MODE_Pause_BIT, supported);
267 __set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, supported);
269 if (phydev->c45_ids.devices_in_package & MDIO_DEVS_AN) {
270 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
274 if (val & MDIO_AN_STAT1_ABLE)
275 __set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, supported);
278 val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT2);
282 /* Ethtool does not support the WAN mode bits */
283 if (val & (MDIO_PMA_STAT2_10GBSR | MDIO_PMA_STAT2_10GBLR |
284 MDIO_PMA_STAT2_10GBER | MDIO_PMA_STAT2_10GBLX4 |
285 MDIO_PMA_STAT2_10GBSW | MDIO_PMA_STAT2_10GBLW |
286 MDIO_PMA_STAT2_10GBEW))
287 __set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, supported);
288 if (val & MDIO_PMA_STAT2_10GBSR)
289 __set_bit(ETHTOOL_LINK_MODE_10000baseSR_Full_BIT, supported);
290 if (val & MDIO_PMA_STAT2_10GBLR)
291 __set_bit(ETHTOOL_LINK_MODE_10000baseLR_Full_BIT, supported);
292 if (val & MDIO_PMA_STAT2_10GBER)
293 __set_bit(ETHTOOL_LINK_MODE_10000baseER_Full_BIT, supported);
295 if (val & MDIO_PMA_STAT2_EXTABLE) {
296 val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_EXTABLE);
300 if (val & (MDIO_PMA_EXTABLE_10GBT | MDIO_PMA_EXTABLE_1000BT |
301 MDIO_PMA_EXTABLE_100BTX | MDIO_PMA_EXTABLE_10BT))
302 __set_bit(ETHTOOL_LINK_MODE_TP_BIT, supported);
303 if (val & MDIO_PMA_EXTABLE_10GBLRM)
304 __set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, supported);
305 if (val & (MDIO_PMA_EXTABLE_10GBKX4 | MDIO_PMA_EXTABLE_10GBKR |
306 MDIO_PMA_EXTABLE_1000BKX))
307 __set_bit(ETHTOOL_LINK_MODE_Backplane_BIT, supported);
308 if (val & MDIO_PMA_EXTABLE_10GBLRM)
309 __set_bit(ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT,
311 if (val & MDIO_PMA_EXTABLE_10GBT)
312 __set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
314 if (val & MDIO_PMA_EXTABLE_10GBKX4)
315 __set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
317 if (val & MDIO_PMA_EXTABLE_10GBKR)
318 __set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
320 if (val & MDIO_PMA_EXTABLE_1000BT)
321 __set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
323 if (val & MDIO_PMA_EXTABLE_1000BKX)
324 __set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
326 if (val & MDIO_PMA_EXTABLE_100BTX) {
327 __set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
329 __set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
332 if (val & MDIO_PMA_EXTABLE_10BT) {
333 __set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
335 __set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
340 linkmode_copy(phydev->supported, supported);
341 linkmode_and(phydev->advertising, phydev->advertising,
347 static int mv3310_config_aneg(struct phy_device *phydev)
349 bool changed = false;
353 /* We don't support manual MDI control */
354 phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
356 if (phydev->autoneg == AUTONEG_DISABLE) {
357 ret = genphy_c45_pma_setup_forced(phydev);
361 return genphy_c45_an_disable_aneg(phydev);
364 linkmode_and(phydev->advertising, phydev->advertising,
367 ret = mv3310_modify(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE,
368 ADVERTISE_ALL | ADVERTISE_100BASE4 |
369 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM,
370 linkmode_adv_to_mii_adv_t(phydev->advertising));
376 reg = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);
377 ret = mv3310_modify(phydev, MDIO_MMD_AN, MV_AN_CTRL1000,
378 ADVERTISE_1000FULL | ADVERTISE_1000HALF, reg);
384 /* 10G control register */
385 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
386 phydev->advertising))
387 reg = MDIO_AN_10GBT_CTRL_ADV10G;
391 /* Make sure we clear unsupported 2.5G/5G advertising */
392 ret = mv3310_modify(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
393 MDIO_AN_10GBT_CTRL_ADV10G |
394 MDIO_AN_10GBT_CTRL_ADV_NBT_MASK, reg);
401 ret = genphy_c45_restart_aneg(phydev);
406 static int mv3310_aneg_done(struct phy_device *phydev)
410 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
414 if (val & MDIO_STAT1_LSTATUS)
417 return genphy_c45_aneg_done(phydev);
420 static void mv3310_update_interface(struct phy_device *phydev)
422 if ((phydev->interface == PHY_INTERFACE_MODE_SGMII ||
423 phydev->interface == PHY_INTERFACE_MODE_10GKR) && phydev->link) {
424 /* The PHY automatically switches its serdes interface (and
425 * active PHYXS instance) between Cisco SGMII and 10GBase-KR
426 * modes according to the speed. Florian suggests setting
427 * phydev->interface to communicate this to the MAC. Only do
428 * this if we are already in either SGMII or 10GBase-KR mode.
430 if (phydev->speed == SPEED_10000)
431 phydev->interface = PHY_INTERFACE_MODE_10GKR;
432 else if (phydev->speed >= SPEED_10 &&
433 phydev->speed < SPEED_10000)
434 phydev->interface = PHY_INTERFACE_MODE_SGMII;
438 /* 10GBASE-ER,LR,LRM,SR do not support autonegotiation. */
439 static int mv3310_read_10gbr_status(struct phy_device *phydev)
442 phydev->speed = SPEED_10000;
443 phydev->duplex = DUPLEX_FULL;
445 mv3310_update_interface(phydev);
450 static int mv3310_read_status(struct phy_device *phydev)
452 u32 mmd_mask = phydev->c45_ids.devices_in_package;
455 /* The vendor devads do not report link status. Avoid the PHYXS
456 * instance as there are three, and its status depends on the MAC
457 * being appropriately configured for the negotiated speed.
459 mmd_mask &= ~(BIT(MDIO_MMD_VEND1) | BIT(MDIO_MMD_VEND2) |
460 BIT(MDIO_MMD_PHYXS));
462 phydev->speed = SPEED_UNKNOWN;
463 phydev->duplex = DUPLEX_UNKNOWN;
464 linkmode_zero(phydev->lp_advertising);
467 phydev->asym_pause = 0;
470 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_BASE_R + MDIO_STAT1);
474 if (val & MDIO_STAT1_LSTATUS)
475 return mv3310_read_10gbr_status(phydev);
477 val = genphy_c45_read_link(phydev, mmd_mask);
481 phydev->link = val > 0 ? 1 : 0;
483 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
487 if (val & MDIO_AN_STAT1_COMPLETE) {
488 val = genphy_c45_read_lpa(phydev);
492 /* Read the link partner's 1G advertisement */
493 val = phy_read_mmd(phydev, MDIO_MMD_AN, MV_AN_STAT1000);
497 mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, val);
499 if (phydev->autoneg == AUTONEG_ENABLE)
500 phy_resolve_aneg_linkmode(phydev);
503 if (phydev->autoneg != AUTONEG_ENABLE) {
504 val = genphy_c45_read_pma(phydev);
509 if (phydev->speed == SPEED_10000) {
510 val = genphy_c45_read_mdix(phydev);
514 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_PAIRSWAP);
518 switch (val & MV_PCS_PAIRSWAP_MASK) {
519 case MV_PCS_PAIRSWAP_AB:
520 phydev->mdix = ETH_TP_MDI_X;
522 case MV_PCS_PAIRSWAP_NONE:
523 phydev->mdix = ETH_TP_MDI;
526 phydev->mdix = ETH_TP_MDI_INVALID;
531 mv3310_update_interface(phydev);
536 static struct phy_driver mv3310_drivers[] = {
538 .phy_id = 0x002b09aa,
539 .phy_id_mask = MARVELL_PHY_ID_MASK,
541 .features = PHY_10GBIT_FEATURES,
542 .soft_reset = gen10g_no_soft_reset,
543 .config_init = mv3310_config_init,
544 .probe = mv3310_probe,
545 .suspend = mv3310_suspend,
546 .resume = mv3310_resume,
547 .config_aneg = mv3310_config_aneg,
548 .aneg_done = mv3310_aneg_done,
549 .read_status = mv3310_read_status,
553 module_phy_driver(mv3310_drivers);
555 static struct mdio_device_id __maybe_unused mv3310_tbl[] = {
556 { 0x002b09aa, MARVELL_PHY_ID_MASK },
559 MODULE_DEVICE_TABLE(mdio, mv3310_tbl);
560 MODULE_DESCRIPTION("Marvell Alaska X 10Gigabit Ethernet PHY driver (MV88X3310)");
561 MODULE_LICENSE("GPL");