1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * linux/mdio.h: definitions for MDIO (clause 45) transceivers 4 * Copyright 2006-2009 Solarflare Communications Inc. 5 */ 6 #ifndef __LINUX_MDIO_H__ 7 #define __LINUX_MDIO_H__ 8 9 #include <uapi/linux/mdio.h> 10 #include <linux/bitfield.h> 11 #include <linux/mod_devicetable.h> 12 13 struct gpio_desc; 14 struct mii_bus; 15 struct reset_control; 16 17 /* Multiple levels of nesting are possible. However typically this is 18 * limited to nested DSA like layer, a MUX layer, and the normal 19 * user. Instead of trying to handle the general case, just define 20 * these cases. 21 */ 22 enum mdio_mutex_lock_class { 23 MDIO_MUTEX_NORMAL, 24 MDIO_MUTEX_MUX, 25 MDIO_MUTEX_NESTED, 26 }; 27 28 struct mdio_device { 29 struct device dev; 30 31 struct mii_bus *bus; 32 char modalias[MDIO_NAME_SIZE]; 33 34 int (*bus_match)(struct device *dev, const struct device_driver *drv); 35 void (*device_free)(struct mdio_device *mdiodev); 36 void (*device_remove)(struct mdio_device *mdiodev); 37 38 /* Bus address of the MDIO device (0-31) */ 39 int addr; 40 int flags; 41 int reset_state; 42 struct gpio_desc *reset_gpio; 43 struct reset_control *reset_ctrl; 44 unsigned int reset_assert_delay; 45 unsigned int reset_deassert_delay; 46 }; 47 to_mdio_device(const struct device * dev)48 static inline struct mdio_device *to_mdio_device(const struct device *dev) 49 { 50 return container_of(dev, struct mdio_device, dev); 51 } 52 53 /* struct mdio_driver_common: Common to all MDIO drivers */ 54 struct mdio_driver_common { 55 struct device_driver driver; 56 int flags; 57 }; 58 #define MDIO_DEVICE_FLAG_PHY 1 59 60 #define to_mdio_common_driver(__drv_c) container_of_const(__drv_c, struct mdio_driver_common, \ 61 driver) 62 63 /* struct mdio_driver: Generic MDIO driver */ 64 struct mdio_driver { 65 struct mdio_driver_common mdiodrv; 66 67 /* 68 * Called during discovery. Used to set 69 * up device-specific structures, if any 70 */ 71 int (*probe)(struct mdio_device *mdiodev); 72 73 /* Clears up any memory if needed */ 74 void (*remove)(struct mdio_device *mdiodev); 75 76 /* Quiesces the device on system shutdown, turns off interrupts etc */ 77 void (*shutdown)(struct mdio_device *mdiodev); 78 }; 79 80 #define to_mdio_driver(__drv_m) container_of_const(to_mdio_common_driver(__drv_m), \ 81 struct mdio_driver, mdiodrv) 82 83 /* device driver data */ mdiodev_set_drvdata(struct mdio_device * mdio,void * data)84 static inline void mdiodev_set_drvdata(struct mdio_device *mdio, void *data) 85 { 86 dev_set_drvdata(&mdio->dev, data); 87 } 88 mdiodev_get_drvdata(struct mdio_device * mdio)89 static inline void *mdiodev_get_drvdata(struct mdio_device *mdio) 90 { 91 return dev_get_drvdata(&mdio->dev); 92 } 93 94 void mdio_device_free(struct mdio_device *mdiodev); 95 struct mdio_device *mdio_device_create(struct mii_bus *bus, int addr); 96 int mdio_device_register(struct mdio_device *mdiodev); 97 void mdio_device_remove(struct mdio_device *mdiodev); 98 void mdio_device_reset(struct mdio_device *mdiodev, int value); 99 int mdio_driver_register(struct mdio_driver *drv); 100 void mdio_driver_unregister(struct mdio_driver *drv); 101 int mdio_device_bus_match(struct device *dev, const struct device_driver *drv); 102 mdio_device_get(struct mdio_device * mdiodev)103 static inline void mdio_device_get(struct mdio_device *mdiodev) 104 { 105 get_device(&mdiodev->dev); 106 } 107 mdio_device_put(struct mdio_device * mdiodev)108 static inline void mdio_device_put(struct mdio_device *mdiodev) 109 { 110 mdio_device_free(mdiodev); 111 } 112 mdio_phy_id_is_c45(int phy_id)113 static inline bool mdio_phy_id_is_c45(int phy_id) 114 { 115 return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK); 116 } 117 mdio_phy_id_prtad(int phy_id)118 static inline __u16 mdio_phy_id_prtad(int phy_id) 119 { 120 return (phy_id & MDIO_PHY_ID_PRTAD) >> 5; 121 } 122 mdio_phy_id_devad(int phy_id)123 static inline __u16 mdio_phy_id_devad(int phy_id) 124 { 125 return phy_id & MDIO_PHY_ID_DEVAD; 126 } 127 128 /** 129 * struct mdio_if_info - Ethernet controller MDIO interface 130 * @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown) 131 * @mmds: Mask of MMDs expected to be present in the PHY. This must be 132 * non-zero unless @prtad = %MDIO_PRTAD_NONE. 133 * @mode_support: MDIO modes supported. If %MDIO_SUPPORTS_C22 is set then 134 * MII register access will be passed through with @devad = 135 * %MDIO_DEVAD_NONE. If %MDIO_EMULATE_C22 is set then access to 136 * commonly used clause 22 registers will be translated into 137 * clause 45 registers. 138 * @dev: Net device structure 139 * @mdio_read: Register read function; returns value or negative error code 140 * @mdio_write: Register write function; returns 0 or negative error code 141 */ 142 struct mdio_if_info { 143 int prtad; 144 u32 mmds; 145 unsigned mode_support; 146 147 struct net_device *dev; 148 int (*mdio_read)(struct net_device *dev, int prtad, int devad, 149 u16 addr); 150 int (*mdio_write)(struct net_device *dev, int prtad, int devad, 151 u16 addr, u16 val); 152 }; 153 154 #define MDIO_PRTAD_NONE (-1) 155 #define MDIO_DEVAD_NONE (-1) 156 #define MDIO_SUPPORTS_C22 1 157 #define MDIO_SUPPORTS_C45 2 158 #define MDIO_EMULATE_C22 4 159 160 struct ethtool_cmd; 161 struct ethtool_pauseparam; 162 extern int mdio45_probe(struct mdio_if_info *mdio, int prtad); 163 extern int mdio_set_flag(const struct mdio_if_info *mdio, 164 int prtad, int devad, u16 addr, int mask, 165 bool sense); 166 extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds); 167 extern int mdio45_nway_restart(const struct mdio_if_info *mdio); 168 extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio, 169 struct ethtool_cmd *ecmd, 170 u32 npage_adv, u32 npage_lpa); 171 extern void 172 mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio, 173 struct ethtool_link_ksettings *cmd, 174 u32 npage_adv, u32 npage_lpa); 175 176 /** 177 * mdio45_ethtool_gset - get settings for ETHTOOL_GSET 178 * @mdio: MDIO interface 179 * @ecmd: Ethtool request structure 180 * 181 * Since the CSRs for auto-negotiation using next pages are not fully 182 * standardised, this function does not attempt to decode them. Use 183 * mdio45_ethtool_gset_npage() to specify advertisement bits from next 184 * pages. 185 */ mdio45_ethtool_gset(const struct mdio_if_info * mdio,struct ethtool_cmd * ecmd)186 static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio, 187 struct ethtool_cmd *ecmd) 188 { 189 mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0); 190 } 191 192 /** 193 * mdio45_ethtool_ksettings_get - get settings for ETHTOOL_GLINKSETTINGS 194 * @mdio: MDIO interface 195 * @cmd: Ethtool request structure 196 * 197 * Since the CSRs for auto-negotiation using next pages are not fully 198 * standardised, this function does not attempt to decode them. Use 199 * mdio45_ethtool_ksettings_get_npage() to specify advertisement bits 200 * from next pages. 201 */ 202 static inline void mdio45_ethtool_ksettings_get(const struct mdio_if_info * mdio,struct ethtool_link_ksettings * cmd)203 mdio45_ethtool_ksettings_get(const struct mdio_if_info *mdio, 204 struct ethtool_link_ksettings *cmd) 205 { 206 mdio45_ethtool_ksettings_get_npage(mdio, cmd, 0, 0); 207 } 208 209 extern int mdio_mii_ioctl(const struct mdio_if_info *mdio, 210 struct mii_ioctl_data *mii_data, int cmd); 211 212 /** 213 * mmd_eee_cap_to_ethtool_sup_t 214 * @eee_cap: value of the MMD EEE Capability register 215 * 216 * A small helper function that translates MMD EEE Capability (3.20) bits 217 * to ethtool supported settings. 218 */ mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap)219 static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap) 220 { 221 u32 supported = 0; 222 223 if (eee_cap & MDIO_EEE_100TX) 224 supported |= SUPPORTED_100baseT_Full; 225 if (eee_cap & MDIO_EEE_1000T) 226 supported |= SUPPORTED_1000baseT_Full; 227 if (eee_cap & MDIO_EEE_10GT) 228 supported |= SUPPORTED_10000baseT_Full; 229 if (eee_cap & MDIO_EEE_1000KX) 230 supported |= SUPPORTED_1000baseKX_Full; 231 if (eee_cap & MDIO_EEE_10GKX4) 232 supported |= SUPPORTED_10000baseKX4_Full; 233 if (eee_cap & MDIO_EEE_10GKR) 234 supported |= SUPPORTED_10000baseKR_Full; 235 236 return supported; 237 } 238 239 /** 240 * mmd_eee_adv_to_ethtool_adv_t 241 * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers 242 * 243 * A small helper function that translates the MMD EEE Advertisment (7.60) 244 * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement 245 * settings. 246 */ mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv)247 static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv) 248 { 249 u32 adv = 0; 250 251 if (eee_adv & MDIO_EEE_100TX) 252 adv |= ADVERTISED_100baseT_Full; 253 if (eee_adv & MDIO_EEE_1000T) 254 adv |= ADVERTISED_1000baseT_Full; 255 if (eee_adv & MDIO_EEE_10GT) 256 adv |= ADVERTISED_10000baseT_Full; 257 if (eee_adv & MDIO_EEE_1000KX) 258 adv |= ADVERTISED_1000baseKX_Full; 259 if (eee_adv & MDIO_EEE_10GKX4) 260 adv |= ADVERTISED_10000baseKX4_Full; 261 if (eee_adv & MDIO_EEE_10GKR) 262 adv |= ADVERTISED_10000baseKR_Full; 263 264 return adv; 265 } 266 267 /** 268 * ethtool_adv_to_mmd_eee_adv_t 269 * @adv: the ethtool advertisement settings 270 * 271 * A small helper function that translates ethtool advertisement settings 272 * to EEE advertisements for the MMD EEE Advertisement (7.60) and 273 * MMD EEE Link Partner Ability (7.61) registers. 274 */ ethtool_adv_to_mmd_eee_adv_t(u32 adv)275 static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv) 276 { 277 u16 reg = 0; 278 279 if (adv & ADVERTISED_100baseT_Full) 280 reg |= MDIO_EEE_100TX; 281 if (adv & ADVERTISED_1000baseT_Full) 282 reg |= MDIO_EEE_1000T; 283 if (adv & ADVERTISED_10000baseT_Full) 284 reg |= MDIO_EEE_10GT; 285 if (adv & ADVERTISED_1000baseKX_Full) 286 reg |= MDIO_EEE_1000KX; 287 if (adv & ADVERTISED_10000baseKX4_Full) 288 reg |= MDIO_EEE_10GKX4; 289 if (adv & ADVERTISED_10000baseKR_Full) 290 reg |= MDIO_EEE_10GKR; 291 292 return reg; 293 } 294 295 /** 296 * linkmode_adv_to_mii_10gbt_adv_t 297 * @advertising: the linkmode advertisement settings 298 * 299 * A small helper function that translates linkmode advertisement 300 * settings to phy autonegotiation advertisements for the C45 301 * 10GBASE-T AN CONTROL (7.32) register. 302 */ linkmode_adv_to_mii_10gbt_adv_t(unsigned long * advertising)303 static inline u32 linkmode_adv_to_mii_10gbt_adv_t(unsigned long *advertising) 304 { 305 u32 result = 0; 306 307 if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 308 advertising)) 309 result |= MDIO_AN_10GBT_CTRL_ADV2_5G; 310 if (linkmode_test_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 311 advertising)) 312 result |= MDIO_AN_10GBT_CTRL_ADV5G; 313 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, 314 advertising)) 315 result |= MDIO_AN_10GBT_CTRL_ADV10G; 316 317 return result; 318 } 319 320 /** 321 * mii_10gbt_stat_mod_linkmode_lpa_t 322 * @advertising: target the linkmode advertisement settings 323 * @lpa: value of the C45 10GBASE-T AN STATUS register 324 * 325 * A small helper function that translates C45 10GBASE-T AN STATUS register bits 326 * to linkmode advertisement settings. Other bits in advertising aren't changed. 327 */ mii_10gbt_stat_mod_linkmode_lpa_t(unsigned long * advertising,u32 lpa)328 static inline void mii_10gbt_stat_mod_linkmode_lpa_t(unsigned long *advertising, 329 u32 lpa) 330 { 331 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 332 advertising, lpa & MDIO_AN_10GBT_STAT_LP2_5G); 333 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 334 advertising, lpa & MDIO_AN_10GBT_STAT_LP5G); 335 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, 336 advertising, lpa & MDIO_AN_10GBT_STAT_LP10G); 337 } 338 339 /** 340 * mii_t1_adv_l_mod_linkmode_t 341 * @advertising: target the linkmode advertisement settings 342 * @lpa: value of the BASE-T1 Autonegotiation Advertisement [15:0] Register 343 * 344 * A small helper function that translates BASE-T1 Autonegotiation 345 * Advertisement [15:0] Register bits to linkmode advertisement settings. 346 * Other bits in advertising aren't changed. 347 */ mii_t1_adv_l_mod_linkmode_t(unsigned long * advertising,u32 lpa)348 static inline void mii_t1_adv_l_mod_linkmode_t(unsigned long *advertising, u32 lpa) 349 { 350 linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising, 351 lpa & MDIO_AN_T1_ADV_L_PAUSE_CAP); 352 linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising, 353 lpa & MDIO_AN_T1_ADV_L_PAUSE_ASYM); 354 } 355 356 /** 357 * mii_t1_adv_m_mod_linkmode_t 358 * @advertising: target the linkmode advertisement settings 359 * @lpa: value of the BASE-T1 Autonegotiation Advertisement [31:16] Register 360 * 361 * A small helper function that translates BASE-T1 Autonegotiation 362 * Advertisement [31:16] Register bits to linkmode advertisement settings. 363 * Other bits in advertising aren't changed. 364 */ mii_t1_adv_m_mod_linkmode_t(unsigned long * advertising,u32 lpa)365 static inline void mii_t1_adv_m_mod_linkmode_t(unsigned long *advertising, u32 lpa) 366 { 367 linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT, 368 advertising, lpa & MDIO_AN_T1_ADV_M_B10L); 369 linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT1_Full_BIT, 370 advertising, lpa & MDIO_AN_T1_ADV_M_100BT1); 371 linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT1_Full_BIT, 372 advertising, lpa & MDIO_AN_T1_ADV_M_1000BT1); 373 } 374 375 /** 376 * linkmode_adv_to_mii_t1_adv_l_t 377 * @advertising: the linkmode advertisement settings 378 * 379 * A small helper function that translates linkmode advertisement 380 * settings to phy autonegotiation advertisements for the 381 * BASE-T1 Autonegotiation Advertisement [15:0] Register. 382 */ linkmode_adv_to_mii_t1_adv_l_t(unsigned long * advertising)383 static inline u32 linkmode_adv_to_mii_t1_adv_l_t(unsigned long *advertising) 384 { 385 u32 result = 0; 386 387 if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising)) 388 result |= MDIO_AN_T1_ADV_L_PAUSE_CAP; 389 if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising)) 390 result |= MDIO_AN_T1_ADV_L_PAUSE_ASYM; 391 392 return result; 393 } 394 395 /** 396 * linkmode_adv_to_mii_t1_adv_m_t 397 * @advertising: the linkmode advertisement settings 398 * 399 * A small helper function that translates linkmode advertisement 400 * settings to phy autonegotiation advertisements for the 401 * BASE-T1 Autonegotiation Advertisement [31:16] Register. 402 */ linkmode_adv_to_mii_t1_adv_m_t(unsigned long * advertising)403 static inline u32 linkmode_adv_to_mii_t1_adv_m_t(unsigned long *advertising) 404 { 405 u32 result = 0; 406 407 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT, advertising)) 408 result |= MDIO_AN_T1_ADV_M_B10L; 409 if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT1_Full_BIT, advertising)) 410 result |= MDIO_AN_T1_ADV_M_100BT1; 411 if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT1_Full_BIT, advertising)) 412 result |= MDIO_AN_T1_ADV_M_1000BT1; 413 414 return result; 415 } 416 417 /** 418 * mii_eee_cap1_mod_linkmode_t() 419 * @adv: target the linkmode advertisement settings 420 * @val: register value 421 * 422 * A function that translates value of following registers to the linkmode: 423 * IEEE 802.3-2018 45.2.3.10 "EEE control and capability 1" register (3.20) 424 * IEEE 802.3-2018 45.2.7.13 "EEE advertisement 1" register (7.60) 425 * IEEE 802.3-2018 45.2.7.14 "EEE link partner ability 1" register (7.61) 426 */ mii_eee_cap1_mod_linkmode_t(unsigned long * adv,u32 val)427 static inline void mii_eee_cap1_mod_linkmode_t(unsigned long *adv, u32 val) 428 { 429 linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, 430 adv, val & MDIO_EEE_100TX); 431 linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, 432 adv, val & MDIO_EEE_1000T); 433 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, 434 adv, val & MDIO_EEE_10GT); 435 linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, 436 adv, val & MDIO_EEE_1000KX); 437 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, 438 adv, val & MDIO_EEE_10GKX4); 439 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, 440 adv, val & MDIO_EEE_10GKR); 441 } 442 443 /** 444 * mii_eee_cap2_mod_linkmode_sup_t() 445 * @adv: target the linkmode settings 446 * @val: register value 447 * 448 * A function that translates value of following registers to the linkmode: 449 * IEEE 802.3-2022 45.2.3.11 "EEE control and capability 2" register (3.21) 450 */ mii_eee_cap2_mod_linkmode_sup_t(unsigned long * adv,u32 val)451 static inline void mii_eee_cap2_mod_linkmode_sup_t(unsigned long *adv, u32 val) 452 { 453 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 454 adv, val & MDIO_EEE_2_5GT); 455 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 456 adv, val & MDIO_EEE_5GT); 457 } 458 459 /** 460 * mii_eee_cap2_mod_linkmode_adv_t() 461 * @adv: target the linkmode advertisement settings 462 * @val: register value 463 * 464 * A function that translates value of following registers to the linkmode: 465 * IEEE 802.3-2022 45.2.7.16 "EEE advertisement 2" register (7.62) 466 * IEEE 802.3-2022 45.2.7.17 "EEE link partner ability 2" register (7.63) 467 * Note: Currently this function is the same as mii_eee_cap2_mod_linkmode_sup_t. 468 * For certain, not yet supported, modes however the bits differ. 469 * Therefore create separate functions already. 470 */ mii_eee_cap2_mod_linkmode_adv_t(unsigned long * adv,u32 val)471 static inline void mii_eee_cap2_mod_linkmode_adv_t(unsigned long *adv, u32 val) 472 { 473 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, 474 adv, val & MDIO_EEE_2_5GT); 475 linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, 476 adv, val & MDIO_EEE_5GT); 477 } 478 479 /** 480 * linkmode_to_mii_eee_cap1_t() 481 * @adv: the linkmode advertisement settings 482 * 483 * A function that translates linkmode to value for IEEE 802.3-2018 45.2.7.13 484 * "EEE advertisement 1" register (7.60) 485 */ linkmode_to_mii_eee_cap1_t(unsigned long * adv)486 static inline u32 linkmode_to_mii_eee_cap1_t(unsigned long *adv) 487 { 488 u32 result = 0; 489 490 if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, adv)) 491 result |= MDIO_EEE_100TX; 492 if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, adv)) 493 result |= MDIO_EEE_1000T; 494 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, adv)) 495 result |= MDIO_EEE_10GT; 496 if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, adv)) 497 result |= MDIO_EEE_1000KX; 498 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, adv)) 499 result |= MDIO_EEE_10GKX4; 500 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, adv)) 501 result |= MDIO_EEE_10GKR; 502 503 return result; 504 } 505 506 /** 507 * linkmode_to_mii_eee_cap2_t() 508 * @adv: the linkmode advertisement settings 509 * 510 * A function that translates linkmode to value for IEEE 802.3-2022 45.2.7.16 511 * "EEE advertisement 2" register (7.62) 512 */ linkmode_to_mii_eee_cap2_t(unsigned long * adv)513 static inline u32 linkmode_to_mii_eee_cap2_t(unsigned long *adv) 514 { 515 u32 result = 0; 516 517 if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, adv)) 518 result |= MDIO_EEE_2_5GT; 519 if (linkmode_test_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, adv)) 520 result |= MDIO_EEE_5GT; 521 522 return result; 523 } 524 525 /** 526 * mii_10base_t1_adv_mod_linkmode_t() 527 * @adv: linkmode advertisement settings 528 * @val: register value 529 * 530 * A function that translates IEEE 802.3cg-2019 45.2.7.26 "10BASE-T1 AN status" 531 * register (7.527) value to the linkmode. 532 */ mii_10base_t1_adv_mod_linkmode_t(unsigned long * adv,u16 val)533 static inline void mii_10base_t1_adv_mod_linkmode_t(unsigned long *adv, u16 val) 534 { 535 linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT, 536 adv, val & MDIO_AN_10BT1_AN_CTRL_ADV_EEE_T1L); 537 } 538 539 /** 540 * linkmode_adv_to_mii_10base_t1_t() 541 * @adv: linkmode advertisement settings 542 * 543 * A function that translates the linkmode to IEEE 802.3cg-2019 45.2.7.25 544 * "10BASE-T1 AN control" register (7.526) value. 545 */ linkmode_adv_to_mii_10base_t1_t(unsigned long * adv)546 static inline u32 linkmode_adv_to_mii_10base_t1_t(unsigned long *adv) 547 { 548 u32 result = 0; 549 550 if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT, adv)) 551 result |= MDIO_AN_10BT1_AN_CTRL_ADV_EEE_T1L; 552 553 return result; 554 } 555 556 /** 557 * mii_c73_mod_linkmode - convert a Clause 73 advertisement to linkmodes 558 * @adv: linkmode advertisement setting 559 * @lpa: array of three u16s containing the advertisement 560 * 561 * Convert an IEEE 802.3 Clause 73 advertisement to ethtool link modes. 562 */ mii_c73_mod_linkmode(unsigned long * adv,u16 * lpa)563 static inline void mii_c73_mod_linkmode(unsigned long *adv, u16 *lpa) 564 { 565 linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, 566 adv, lpa[0] & MDIO_AN_C73_0_PAUSE); 567 linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, 568 adv, lpa[0] & MDIO_AN_C73_0_ASM_DIR); 569 linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, 570 adv, lpa[1] & MDIO_AN_C73_1_1000BASE_KX); 571 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, 572 adv, lpa[1] & MDIO_AN_C73_1_10GBASE_KX4); 573 linkmode_mod_bit(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT, 574 adv, lpa[1] & MDIO_AN_C73_1_40GBASE_KR4); 575 linkmode_mod_bit(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT, 576 adv, lpa[1] & MDIO_AN_C73_1_40GBASE_CR4); 577 /* 100GBASE_CR10 and 100GBASE_KP4 not implemented */ 578 linkmode_mod_bit(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT, 579 adv, lpa[1] & MDIO_AN_C73_1_100GBASE_KR4); 580 linkmode_mod_bit(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT, 581 adv, lpa[1] & MDIO_AN_C73_1_100GBASE_CR4); 582 /* 25GBASE_R_S not implemented */ 583 /* The 25GBASE_R bit can be used for 25Gbase KR or CR modes */ 584 linkmode_mod_bit(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT, 585 adv, lpa[1] & MDIO_AN_C73_1_25GBASE_R); 586 linkmode_mod_bit(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT, 587 adv, lpa[1] & MDIO_AN_C73_1_25GBASE_R); 588 linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, 589 adv, lpa[1] & MDIO_AN_C73_1_10GBASE_KR); 590 linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, 591 adv, lpa[2] & MDIO_AN_C73_2_2500BASE_KX); 592 /* 5GBASE_KR not implemented */ 593 } 594 595 int __mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); 596 int __mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); 597 int __mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask, 598 u16 set); 599 int __mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum, 600 u16 mask, u16 set); 601 602 int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); 603 int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum); 604 int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); 605 int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val); 606 int mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask, 607 u16 set); 608 int mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum, 609 u16 mask, u16 set); 610 int __mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum); 611 int mdiobus_c45_read(struct mii_bus *bus, int addr, int devad, u32 regnum); 612 int mdiobus_c45_read_nested(struct mii_bus *bus, int addr, int devad, 613 u32 regnum); 614 int __mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum, 615 u16 val); 616 int mdiobus_c45_write(struct mii_bus *bus, int addr, int devad, u32 regnum, 617 u16 val); 618 int mdiobus_c45_write_nested(struct mii_bus *bus, int addr, int devad, 619 u32 regnum, u16 val); 620 int mdiobus_c45_modify(struct mii_bus *bus, int addr, int devad, u32 regnum, 621 u16 mask, u16 set); 622 623 int mdiobus_c45_modify_changed(struct mii_bus *bus, int addr, int devad, 624 u32 regnum, u16 mask, u16 set); 625 __mdiodev_read(struct mdio_device * mdiodev,u32 regnum)626 static inline int __mdiodev_read(struct mdio_device *mdiodev, u32 regnum) 627 { 628 return __mdiobus_read(mdiodev->bus, mdiodev->addr, regnum); 629 } 630 __mdiodev_write(struct mdio_device * mdiodev,u32 regnum,u16 val)631 static inline int __mdiodev_write(struct mdio_device *mdiodev, u32 regnum, 632 u16 val) 633 { 634 return __mdiobus_write(mdiodev->bus, mdiodev->addr, regnum, val); 635 } 636 __mdiodev_modify(struct mdio_device * mdiodev,u32 regnum,u16 mask,u16 set)637 static inline int __mdiodev_modify(struct mdio_device *mdiodev, u32 regnum, 638 u16 mask, u16 set) 639 { 640 return __mdiobus_modify(mdiodev->bus, mdiodev->addr, regnum, mask, set); 641 } 642 __mdiodev_modify_changed(struct mdio_device * mdiodev,u32 regnum,u16 mask,u16 set)643 static inline int __mdiodev_modify_changed(struct mdio_device *mdiodev, 644 u32 regnum, u16 mask, u16 set) 645 { 646 return __mdiobus_modify_changed(mdiodev->bus, mdiodev->addr, regnum, 647 mask, set); 648 } 649 mdiodev_read(struct mdio_device * mdiodev,u32 regnum)650 static inline int mdiodev_read(struct mdio_device *mdiodev, u32 regnum) 651 { 652 return mdiobus_read(mdiodev->bus, mdiodev->addr, regnum); 653 } 654 mdiodev_write(struct mdio_device * mdiodev,u32 regnum,u16 val)655 static inline int mdiodev_write(struct mdio_device *mdiodev, u32 regnum, 656 u16 val) 657 { 658 return mdiobus_write(mdiodev->bus, mdiodev->addr, regnum, val); 659 } 660 mdiodev_modify(struct mdio_device * mdiodev,u32 regnum,u16 mask,u16 set)661 static inline int mdiodev_modify(struct mdio_device *mdiodev, u32 regnum, 662 u16 mask, u16 set) 663 { 664 return mdiobus_modify(mdiodev->bus, mdiodev->addr, regnum, mask, set); 665 } 666 mdiodev_modify_changed(struct mdio_device * mdiodev,u32 regnum,u16 mask,u16 set)667 static inline int mdiodev_modify_changed(struct mdio_device *mdiodev, 668 u32 regnum, u16 mask, u16 set) 669 { 670 return mdiobus_modify_changed(mdiodev->bus, mdiodev->addr, regnum, 671 mask, set); 672 } 673 mdiodev_c45_modify(struct mdio_device * mdiodev,int devad,u32 regnum,u16 mask,u16 set)674 static inline int mdiodev_c45_modify(struct mdio_device *mdiodev, int devad, 675 u32 regnum, u16 mask, u16 set) 676 { 677 return mdiobus_c45_modify(mdiodev->bus, mdiodev->addr, devad, regnum, 678 mask, set); 679 } 680 mdiodev_c45_modify_changed(struct mdio_device * mdiodev,int devad,u32 regnum,u16 mask,u16 set)681 static inline int mdiodev_c45_modify_changed(struct mdio_device *mdiodev, 682 int devad, u32 regnum, u16 mask, 683 u16 set) 684 { 685 return mdiobus_c45_modify_changed(mdiodev->bus, mdiodev->addr, devad, 686 regnum, mask, set); 687 } 688 mdiodev_c45_read(struct mdio_device * mdiodev,int devad,u16 regnum)689 static inline int mdiodev_c45_read(struct mdio_device *mdiodev, int devad, 690 u16 regnum) 691 { 692 return mdiobus_c45_read(mdiodev->bus, mdiodev->addr, devad, regnum); 693 } 694 mdiodev_c45_write(struct mdio_device * mdiodev,u32 devad,u16 regnum,u16 val)695 static inline int mdiodev_c45_write(struct mdio_device *mdiodev, u32 devad, 696 u16 regnum, u16 val) 697 { 698 return mdiobus_c45_write(mdiodev->bus, mdiodev->addr, devad, regnum, 699 val); 700 } 701 702 int mdiobus_register_device(struct mdio_device *mdiodev); 703 int mdiobus_unregister_device(struct mdio_device *mdiodev); 704 bool mdiobus_is_registered_device(struct mii_bus *bus, int addr); 705 struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr); 706 707 /** 708 * mdio_module_driver() - Helper macro for registering mdio drivers 709 * @_mdio_driver: driver to register 710 * 711 * Helper macro for MDIO drivers which do not do anything special in module 712 * init/exit. Each module may only use this macro once, and calling it 713 * replaces module_init() and module_exit(). 714 */ 715 #define mdio_module_driver(_mdio_driver) \ 716 static int __init mdio_module_init(void) \ 717 { \ 718 return mdio_driver_register(&_mdio_driver); \ 719 } \ 720 module_init(mdio_module_init); \ 721 static void __exit mdio_module_exit(void) \ 722 { \ 723 mdio_driver_unregister(&_mdio_driver); \ 724 } \ 725 module_exit(mdio_module_exit) 726 727 #endif /* __LINUX_MDIO_H__ */ 728