1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later 2/* 3 * Copyright 2008 - 2015 Freescale Semiconductor Inc. 4 */ 5 6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7 8#include "fman_memac.h" 9#include "fman.h" 10#include "mac.h" 11 12#include <linux/slab.h> 13#include <linux/io.h> 14#include <linux/pcs-lynx.h> 15#include <linux/phy.h> 16#include <linux/phy_fixed.h> 17#include <linux/phy/phy.h> 18#include <linux/of_mdio.h> 19 20/* Num of additional exact match MAC adr regs */ 21#define MEMAC_NUM_OF_PADDRS 7 22 23/* Control and Configuration Register (COMMAND_CONFIG) */ 24#define CMD_CFG_REG_LOWP_RXETY 0x01000000 /* 07 Rx low power indication */ 25#define CMD_CFG_TX_LOWP_ENA 0x00800000 /* 08 Tx Low Power Idle Enable */ 26#define CMD_CFG_PFC_MODE 0x00080000 /* 12 Enable PFC */ 27#define CMD_CFG_NO_LEN_CHK 0x00020000 /* 14 Payload length check disable */ 28#define CMD_CFG_SW_RESET 0x00001000 /* 19 S/W Reset, self clearing bit */ 29#define CMD_CFG_TX_PAD_EN 0x00000800 /* 20 Enable Tx padding of frames */ 30#define CMD_CFG_PAUSE_IGNORE 0x00000100 /* 23 Ignore Pause frame quanta */ 31#define CMD_CFG_CRC_FWD 0x00000040 /* 25 Terminate/frwd CRC of frames */ 32#define CMD_CFG_PAD_EN 0x00000020 /* 26 Frame padding removal */ 33#define CMD_CFG_PROMIS_EN 0x00000010 /* 27 Promiscuous operation enable */ 34#define CMD_CFG_RX_EN 0x00000002 /* 30 MAC receive path enable */ 35#define CMD_CFG_TX_EN 0x00000001 /* 31 MAC transmit path enable */ 36 37/* Transmit FIFO Sections Register (TX_FIFO_SECTIONS) */ 38#define TX_FIFO_SECTIONS_TX_EMPTY_MASK 0xFFFF0000 39#define TX_FIFO_SECTIONS_TX_AVAIL_MASK 0x0000FFFF 40#define TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_10G 0x00400000 41#define TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_1G 0x00100000 42#define TX_FIFO_SECTIONS_TX_AVAIL_10G 0x00000019 43#define TX_FIFO_SECTIONS_TX_AVAIL_1G 0x00000020 44#define TX_FIFO_SECTIONS_TX_AVAIL_SLOW_10G 0x00000060 45 46#define GET_TX_EMPTY_DEFAULT_VALUE(_val) \ 47do { \ 48 _val &= ~TX_FIFO_SECTIONS_TX_EMPTY_MASK; \ 49 ((_val == TX_FIFO_SECTIONS_TX_AVAIL_10G) ? \ 50 (_val |= TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_10G) :\ 51 (_val |= TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_1G));\ 52} while (0) 53 54/* Interface Mode Register (IF_MODE) */ 55 56#define IF_MODE_MASK 0x00000003 /* 30-31 Mask on i/f mode bits */ 57#define IF_MODE_10G 0x00000000 /* 30-31 10G interface */ 58#define IF_MODE_MII 0x00000001 /* 30-31 MII interface */ 59#define IF_MODE_GMII 0x00000002 /* 30-31 GMII (1G) interface */ 60#define IF_MODE_RGMII 0x00000004 61#define IF_MODE_RGMII_AUTO 0x00008000 62#define IF_MODE_RGMII_1000 0x00004000 /* 10 - 1000Mbps RGMII */ 63#define IF_MODE_RGMII_100 0x00000000 /* 00 - 100Mbps RGMII */ 64#define IF_MODE_RGMII_10 0x00002000 /* 01 - 10Mbps RGMII */ 65#define IF_MODE_RGMII_SP_MASK 0x00006000 /* Setsp mask bits */ 66#define IF_MODE_RGMII_FD 0x00001000 /* Full duplex RGMII */ 67#define IF_MODE_HD 0x00000040 /* Half duplex operation */ 68 69/* Hash table Control Register (HASHTABLE_CTRL) */ 70#define HASH_CTRL_MCAST_EN 0x00000100 71/* 26-31 Hash table address code */ 72#define HASH_CTRL_ADDR_MASK 0x0000003F 73/* MAC mcast indication */ 74#define GROUP_ADDRESS 0x0000010000000000LL 75#define HASH_TABLE_SIZE 64 /* Hash tbl size */ 76 77/* Interrupt Mask Register (IMASK) */ 78#define MEMAC_IMASK_MGI 0x40000000 /* 1 Magic pkt detect indication */ 79#define MEMAC_IMASK_TSECC_ER 0x20000000 /* 2 Timestamp FIFO ECC error evnt */ 80#define MEMAC_IMASK_TECC_ER 0x02000000 /* 6 Transmit frame ECC error evnt */ 81#define MEMAC_IMASK_RECC_ER 0x01000000 /* 7 Receive frame ECC error evnt */ 82 83#define MEMAC_ALL_ERRS_IMASK \ 84 ((u32)(MEMAC_IMASK_TSECC_ER | \ 85 MEMAC_IMASK_TECC_ER | \ 86 MEMAC_IMASK_RECC_ER | \ 87 MEMAC_IMASK_MGI)) 88 89#define MEMAC_IEVNT_PCS 0x80000000 /* PCS (XG). Link sync (G) */ 90#define MEMAC_IEVNT_AN 0x40000000 /* Auto-negotiation */ 91#define MEMAC_IEVNT_LT 0x20000000 /* Link Training/New page */ 92#define MEMAC_IEVNT_MGI 0x00004000 /* Magic pkt detection */ 93#define MEMAC_IEVNT_TS_ECC_ER 0x00002000 /* Timestamp FIFO ECC error*/ 94#define MEMAC_IEVNT_RX_FIFO_OVFL 0x00001000 /* Rx FIFO overflow */ 95#define MEMAC_IEVNT_TX_FIFO_UNFL 0x00000800 /* Tx FIFO underflow */ 96#define MEMAC_IEVNT_TX_FIFO_OVFL 0x00000400 /* Tx FIFO overflow */ 97#define MEMAC_IEVNT_TX_ECC_ER 0x00000200 /* Tx frame ECC error */ 98#define MEMAC_IEVNT_RX_ECC_ER 0x00000100 /* Rx frame ECC error */ 99#define MEMAC_IEVNT_LI_FAULT 0x00000080 /* Link Interruption flt */ 100#define MEMAC_IEVNT_RX_EMPTY 0x00000040 /* Rx FIFO empty */ 101#define MEMAC_IEVNT_TX_EMPTY 0x00000020 /* Tx FIFO empty */ 102#define MEMAC_IEVNT_RX_LOWP 0x00000010 /* Low Power Idle */ 103#define MEMAC_IEVNT_PHY_LOS 0x00000004 /* Phy loss of signal */ 104#define MEMAC_IEVNT_REM_FAULT 0x00000002 /* Remote fault (XGMII) */ 105#define MEMAC_IEVNT_LOC_FAULT 0x00000001 /* Local fault (XGMII) */ 106 107#define DEFAULT_PAUSE_QUANTA 0xf000 108#define DEFAULT_FRAME_LENGTH 0x600 109#define DEFAULT_TX_IPG_LENGTH 12 110 111#define CLXY_PAUSE_QUANTA_CLX_PQNT 0x0000FFFF 112#define CLXY_PAUSE_QUANTA_CLY_PQNT 0xFFFF0000 113#define CLXY_PAUSE_THRESH_CLX_QTH 0x0000FFFF 114#define CLXY_PAUSE_THRESH_CLY_QTH 0xFFFF0000 115 116struct mac_addr { 117 /* Lower 32 bits of 48-bit MAC address */ 118 u32 mac_addr_l; 119 /* Upper 16 bits of 48-bit MAC address */ 120 u32 mac_addr_u; 121}; 122 123/* memory map */ 124struct memac_regs { 125 u32 res0000[2]; /* General Control and Status */ 126 u32 command_config; /* 0x008 Ctrl and cfg */ 127 struct mac_addr mac_addr0; /* 0x00C-0x010 MAC_ADDR_0...1 */ 128 u32 maxfrm; /* 0x014 Max frame length */ 129 u32 res0018[1]; 130 u32 rx_fifo_sections; /* Receive FIFO configuration reg */ 131 u32 tx_fifo_sections; /* Transmit FIFO configuration reg */ 132 u32 res0024[2]; 133 u32 hashtable_ctrl; /* 0x02C Hash table control */ 134 u32 res0030[4]; 135 u32 ievent; /* 0x040 Interrupt event */ 136 u32 tx_ipg_length; /* 0x044 Transmitter inter-packet-gap */ 137 u32 res0048; 138 u32 imask; /* 0x04C Interrupt mask */ 139 u32 res0050; 140 u32 pause_quanta[4]; /* 0x054 Pause quanta */ 141 u32 pause_thresh[4]; /* 0x064 Pause quanta threshold */ 142 u32 rx_pause_status; /* 0x074 Receive pause status */ 143 u32 res0078[2]; 144 struct mac_addr mac_addr[MEMAC_NUM_OF_PADDRS];/* 0x80-0x0B4 mac padr */ 145 u32 lpwake_timer; /* 0x0B8 Low Power Wakeup Timer */ 146 u32 sleep_timer; /* 0x0BC Transmit EEE Low Power Timer */ 147 u32 res00c0[8]; 148 u32 statn_config; /* 0x0E0 Statistics configuration */ 149 u32 res00e4[7]; 150 /* Rx Statistics Counter */ 151 u32 reoct_l; 152 u32 reoct_u; 153 u32 roct_l; 154 u32 roct_u; 155 u32 raln_l; 156 u32 raln_u; 157 u32 rxpf_l; 158 u32 rxpf_u; 159 u32 rfrm_l; 160 u32 rfrm_u; 161 u32 rfcs_l; 162 u32 rfcs_u; 163 u32 rvlan_l; 164 u32 rvlan_u; 165 u32 rerr_l; 166 u32 rerr_u; 167 u32 ruca_l; 168 u32 ruca_u; 169 u32 rmca_l; 170 u32 rmca_u; 171 u32 rbca_l; 172 u32 rbca_u; 173 u32 rdrp_l; 174 u32 rdrp_u; 175 u32 rpkt_l; 176 u32 rpkt_u; 177 u32 rund_l; 178 u32 rund_u; 179 u32 r64_l; 180 u32 r64_u; 181 u32 r127_l; 182 u32 r127_u; 183 u32 r255_l; 184 u32 r255_u; 185 u32 r511_l; 186 u32 r511_u; 187 u32 r1023_l; 188 u32 r1023_u; 189 u32 r1518_l; 190 u32 r1518_u; 191 u32 r1519x_l; 192 u32 r1519x_u; 193 u32 rovr_l; 194 u32 rovr_u; 195 u32 rjbr_l; 196 u32 rjbr_u; 197 u32 rfrg_l; 198 u32 rfrg_u; 199 u32 rcnp_l; 200 u32 rcnp_u; 201 u32 rdrntp_l; 202 u32 rdrntp_u; 203 u32 res01d0[12]; 204 /* Tx Statistics Counter */ 205 u32 teoct_l; 206 u32 teoct_u; 207 u32 toct_l; 208 u32 toct_u; 209 u32 res0210[2]; 210 u32 txpf_l; 211 u32 txpf_u; 212 u32 tfrm_l; 213 u32 tfrm_u; 214 u32 tfcs_l; 215 u32 tfcs_u; 216 u32 tvlan_l; 217 u32 tvlan_u; 218 u32 terr_l; 219 u32 terr_u; 220 u32 tuca_l; 221 u32 tuca_u; 222 u32 tmca_l; 223 u32 tmca_u; 224 u32 tbca_l; 225 u32 tbca_u; 226 u32 res0258[2]; 227 u32 tpkt_l; 228 u32 tpkt_u; 229 u32 tund_l; 230 u32 tund_u; 231 u32 t64_l; 232 u32 t64_u; 233 u32 t127_l; 234 u32 t127_u; 235 u32 t255_l; 236 u32 t255_u; 237 u32 t511_l; 238 u32 t511_u; 239 u32 t1023_l; 240 u32 t1023_u; 241 u32 t1518_l; 242 u32 t1518_u; 243 u32 t1519x_l; 244 u32 t1519x_u; 245 u32 res02a8[6]; 246 u32 tcnp_l; 247 u32 tcnp_u; 248 u32 res02c8[14]; 249 /* Line Interface Control */ 250 u32 if_mode; /* 0x300 Interface Mode Control */ 251 u32 if_status; /* 0x304 Interface Status */ 252 u32 res0308[14]; 253 /* HiGig/2 */ 254 u32 hg_config; /* 0x340 Control and cfg */ 255 u32 res0344[3]; 256 u32 hg_pause_quanta; /* 0x350 Pause quanta */ 257 u32 res0354[3]; 258 u32 hg_pause_thresh; /* 0x360 Pause quanta threshold */ 259 u32 res0364[3]; 260 u32 hgrx_pause_status; /* 0x370 Receive pause status */ 261 u32 hg_fifos_status; /* 0x374 fifos status */ 262 u32 rhm; /* 0x378 rx messages counter */ 263 u32 thm; /* 0x37C tx messages counter */ 264}; 265 266struct memac_cfg { 267 bool reset_on_init; 268 bool pause_ignore; 269 bool promiscuous_mode_enable; 270 struct fixed_phy_status *fixed_link; 271 u16 max_frame_length; 272 u16 pause_quanta; 273 u32 tx_ipg_length; 274}; 275 276struct fman_mac { 277 /* Pointer to MAC memory mapped registers */ 278 struct memac_regs __iomem *regs; 279 /* MAC address of device */ 280 u64 addr; 281 struct mac_device *dev_id; /* device cookie used by the exception cbs */ 282 fman_mac_exception_cb *exception_cb; 283 fman_mac_exception_cb *event_cb; 284 /* Pointer to driver's global address hash table */ 285 struct eth_hash_t *multicast_addr_hash; 286 /* Pointer to driver's individual address hash table */ 287 struct eth_hash_t *unicast_addr_hash; 288 u8 mac_id; 289 u32 exceptions; 290 struct memac_cfg *memac_drv_param; 291 void *fm; 292 struct fman_rev_info fm_rev_info; 293 struct phy *serdes; 294 struct phylink_pcs *sgmii_pcs; 295 struct phylink_pcs *qsgmii_pcs; 296 struct phylink_pcs *xfi_pcs; 297 bool allmulti_enabled; 298 bool rgmii_no_half_duplex; 299}; 300 301static void add_addr_in_paddr(struct memac_regs __iomem *regs, const u8 *adr, 302 u8 paddr_num) 303{ 304 u32 tmp0, tmp1; 305 306 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24); 307 tmp1 = (u32)(adr[4] | adr[5] << 8); 308 309 if (paddr_num == 0) { 310 iowrite32be(tmp0, ®s->mac_addr0.mac_addr_l); 311 iowrite32be(tmp1, ®s->mac_addr0.mac_addr_u); 312 } else { 313 iowrite32be(tmp0, ®s->mac_addr[paddr_num - 1].mac_addr_l); 314 iowrite32be(tmp1, ®s->mac_addr[paddr_num - 1].mac_addr_u); 315 } 316} 317 318static int reset(struct memac_regs __iomem *regs) 319{ 320 u32 tmp; 321 int count; 322 323 tmp = ioread32be(®s->command_config); 324 325 tmp |= CMD_CFG_SW_RESET; 326 327 iowrite32be(tmp, ®s->command_config); 328 329 count = 100; 330 do { 331 udelay(1); 332 } while ((ioread32be(®s->command_config) & CMD_CFG_SW_RESET) && 333 --count); 334 335 if (count == 0) 336 return -EBUSY; 337 338 return 0; 339} 340 341static void set_exception(struct memac_regs __iomem *regs, u32 val, 342 bool enable) 343{ 344 u32 tmp; 345 346 tmp = ioread32be(®s->imask); 347 if (enable) 348 tmp |= val; 349 else 350 tmp &= ~val; 351 352 iowrite32be(tmp, ®s->imask); 353} 354 355static int init(struct memac_regs __iomem *regs, struct memac_cfg *cfg, 356 u32 exceptions) 357{ 358 u32 tmp; 359 360 /* Config */ 361 tmp = 0; 362 if (cfg->promiscuous_mode_enable) 363 tmp |= CMD_CFG_PROMIS_EN; 364 if (cfg->pause_ignore) 365 tmp |= CMD_CFG_PAUSE_IGNORE; 366 367 /* Payload length check disable */ 368 tmp |= CMD_CFG_NO_LEN_CHK; 369 /* Enable padding of frames in transmit direction */ 370 tmp |= CMD_CFG_TX_PAD_EN; 371 372 tmp |= CMD_CFG_CRC_FWD; 373 374 iowrite32be(tmp, ®s->command_config); 375 376 /* Max Frame Length */ 377 iowrite32be((u32)cfg->max_frame_length, ®s->maxfrm); 378 379 /* Pause Time */ 380 iowrite32be((u32)cfg->pause_quanta, ®s->pause_quanta[0]); 381 iowrite32be((u32)0, ®s->pause_thresh[0]); 382 383 /* clear all pending events and set-up interrupts */ 384 iowrite32be(0xffffffff, ®s->ievent); 385 set_exception(regs, exceptions, true); 386 387 return 0; 388} 389 390static void set_dflts(struct memac_cfg *cfg) 391{ 392 cfg->reset_on_init = false; 393 cfg->promiscuous_mode_enable = false; 394 cfg->pause_ignore = false; 395 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH; 396 cfg->max_frame_length = DEFAULT_FRAME_LENGTH; 397 cfg->pause_quanta = DEFAULT_PAUSE_QUANTA; 398} 399 400static u32 get_mac_addr_hash_code(u64 eth_addr) 401{ 402 u64 mask1, mask2; 403 u32 xor_val = 0; 404 u8 i, j; 405 406 for (i = 0; i < 6; i++) { 407 mask1 = eth_addr & (u64)0x01; 408 eth_addr >>= 1; 409 410 for (j = 0; j < 7; j++) { 411 mask2 = eth_addr & (u64)0x01; 412 mask1 ^= mask2; 413 eth_addr >>= 1; 414 } 415 416 xor_val |= (mask1 << (5 - i)); 417 } 418 419 return xor_val; 420} 421 422static int check_init_parameters(struct fman_mac *memac) 423{ 424 if (!memac->exception_cb) { 425 pr_err("Uninitialized exception handler\n"); 426 return -EINVAL; 427 } 428 if (!memac->event_cb) { 429 pr_warn("Uninitialize event handler\n"); 430 return -EINVAL; 431 } 432 433 return 0; 434} 435 436static int get_exception_flag(enum fman_mac_exceptions exception) 437{ 438 u32 bit_mask; 439 440 switch (exception) { 441 case FM_MAC_EX_10G_TX_ECC_ER: 442 bit_mask = MEMAC_IMASK_TECC_ER; 443 break; 444 case FM_MAC_EX_10G_RX_ECC_ER: 445 bit_mask = MEMAC_IMASK_RECC_ER; 446 break; 447 case FM_MAC_EX_TS_FIFO_ECC_ERR: 448 bit_mask = MEMAC_IMASK_TSECC_ER; 449 break; 450 case FM_MAC_EX_MAGIC_PACKET_INDICATION: 451 bit_mask = MEMAC_IMASK_MGI; 452 break; 453 default: 454 bit_mask = 0; 455 break; 456 } 457 458 return bit_mask; 459} 460 461static void memac_err_exception(void *handle) 462{ 463 struct fman_mac *memac = (struct fman_mac *)handle; 464 struct memac_regs __iomem *regs = memac->regs; 465 u32 event, imask; 466 467 event = ioread32be(®s->ievent); 468 imask = ioread32be(®s->imask); 469 470 /* Imask include both error and notification/event bits. 471 * Leaving only error bits enabled by imask. 472 * The imask error bits are shifted by 16 bits offset from 473 * their corresponding location in the ievent - hence the >> 16 474 */ 475 event &= ((imask & MEMAC_ALL_ERRS_IMASK) >> 16); 476 477 iowrite32be(event, ®s->ievent); 478 479 if (event & MEMAC_IEVNT_TS_ECC_ER) 480 memac->exception_cb(memac->dev_id, FM_MAC_EX_TS_FIFO_ECC_ERR); 481 if (event & MEMAC_IEVNT_TX_ECC_ER) 482 memac->exception_cb(memac->dev_id, FM_MAC_EX_10G_TX_ECC_ER); 483 if (event & MEMAC_IEVNT_RX_ECC_ER) 484 memac->exception_cb(memac->dev_id, FM_MAC_EX_10G_RX_ECC_ER); 485} 486 487static void memac_exception(void *handle) 488{ 489 struct fman_mac *memac = (struct fman_mac *)handle; 490 struct memac_regs __iomem *regs = memac->regs; 491 u32 event, imask; 492 493 event = ioread32be(®s->ievent); 494 imask = ioread32be(®s->imask); 495 496 /* Imask include both error and notification/event bits. 497 * Leaving only error bits enabled by imask. 498 * The imask error bits are shifted by 16 bits offset from 499 * their corresponding location in the ievent - hence the >> 16 500 */ 501 event &= ((imask & MEMAC_ALL_ERRS_IMASK) >> 16); 502 503 iowrite32be(event, ®s->ievent); 504 505 if (event & MEMAC_IEVNT_MGI) 506 memac->exception_cb(memac->dev_id, 507 FM_MAC_EX_MAGIC_PACKET_INDICATION); 508} 509 510static void free_init_resources(struct fman_mac *memac) 511{ 512 fman_unregister_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 513 FMAN_INTR_TYPE_ERR); 514 515 fman_unregister_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 516 FMAN_INTR_TYPE_NORMAL); 517 518 /* release the driver's group hash table */ 519 free_hash_table(memac->multicast_addr_hash); 520 memac->multicast_addr_hash = NULL; 521 522 /* release the driver's individual hash table */ 523 free_hash_table(memac->unicast_addr_hash); 524 memac->unicast_addr_hash = NULL; 525} 526 527static int memac_enable(struct fman_mac *memac) 528{ 529 int ret; 530 531 ret = phy_init(memac->serdes); 532 if (ret) { 533 dev_err(memac->dev_id->dev, 534 "could not initialize serdes: %pe\n", ERR_PTR(ret)); 535 return ret; 536 } 537 538 ret = phy_power_on(memac->serdes); 539 if (ret) { 540 dev_err(memac->dev_id->dev, 541 "could not power on serdes: %pe\n", ERR_PTR(ret)); 542 phy_exit(memac->serdes); 543 } 544 545 return ret; 546} 547 548static void memac_disable(struct fman_mac *memac) 549{ 550 phy_power_off(memac->serdes); 551 phy_exit(memac->serdes); 552} 553 554static int memac_set_promiscuous(struct fman_mac *memac, bool new_val) 555{ 556 struct memac_regs __iomem *regs = memac->regs; 557 u32 tmp; 558 559 tmp = ioread32be(®s->command_config); 560 if (new_val) 561 tmp |= CMD_CFG_PROMIS_EN; 562 else 563 tmp &= ~CMD_CFG_PROMIS_EN; 564 565 iowrite32be(tmp, ®s->command_config); 566 567 return 0; 568} 569 570static int memac_set_tx_pause_frames(struct fman_mac *memac, u8 priority, 571 u16 pause_time, u16 thresh_time) 572{ 573 struct memac_regs __iomem *regs = memac->regs; 574 u32 tmp; 575 576 tmp = ioread32be(®s->tx_fifo_sections); 577 578 GET_TX_EMPTY_DEFAULT_VALUE(tmp); 579 iowrite32be(tmp, ®s->tx_fifo_sections); 580 581 tmp = ioread32be(®s->command_config); 582 tmp &= ~CMD_CFG_PFC_MODE; 583 584 iowrite32be(tmp, ®s->command_config); 585 586 tmp = ioread32be(®s->pause_quanta[priority / 2]); 587 if (priority % 2) 588 tmp &= CLXY_PAUSE_QUANTA_CLX_PQNT; 589 else 590 tmp &= CLXY_PAUSE_QUANTA_CLY_PQNT; 591 tmp |= ((u32)pause_time << (16 * (priority % 2))); 592 iowrite32be(tmp, ®s->pause_quanta[priority / 2]); 593 594 tmp = ioread32be(®s->pause_thresh[priority / 2]); 595 if (priority % 2) 596 tmp &= CLXY_PAUSE_THRESH_CLX_QTH; 597 else 598 tmp &= CLXY_PAUSE_THRESH_CLY_QTH; 599 tmp |= ((u32)thresh_time << (16 * (priority % 2))); 600 iowrite32be(tmp, ®s->pause_thresh[priority / 2]); 601 602 return 0; 603} 604 605static int memac_accept_rx_pause_frames(struct fman_mac *memac, bool en) 606{ 607 struct memac_regs __iomem *regs = memac->regs; 608 u32 tmp; 609 610 tmp = ioread32be(®s->command_config); 611 if (en) 612 tmp &= ~CMD_CFG_PAUSE_IGNORE; 613 else 614 tmp |= CMD_CFG_PAUSE_IGNORE; 615 616 iowrite32be(tmp, ®s->command_config); 617 618 return 0; 619} 620 621static unsigned long memac_get_caps(struct phylink_config *config, 622 phy_interface_t interface) 623{ 624 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 625 unsigned long caps = config->mac_capabilities; 626 627 if (phy_interface_mode_is_rgmii(interface) && 628 memac->rgmii_no_half_duplex) 629 caps &= ~(MAC_10HD | MAC_100HD); 630 631 return caps; 632} 633 634/** 635 * memac_if_mode() - Convert an interface mode into an IF_MODE config 636 * @interface: A phy interface mode 637 * 638 * Return: A configuration word, suitable for programming into the lower bits 639 * of %IF_MODE. 640 */ 641static u32 memac_if_mode(phy_interface_t interface) 642{ 643 switch (interface) { 644 case PHY_INTERFACE_MODE_MII: 645 return IF_MODE_MII; 646 case PHY_INTERFACE_MODE_RGMII: 647 case PHY_INTERFACE_MODE_RGMII_ID: 648 case PHY_INTERFACE_MODE_RGMII_RXID: 649 case PHY_INTERFACE_MODE_RGMII_TXID: 650 return IF_MODE_GMII | IF_MODE_RGMII; 651 case PHY_INTERFACE_MODE_SGMII: 652 case PHY_INTERFACE_MODE_1000BASEX: 653 case PHY_INTERFACE_MODE_QSGMII: 654 return IF_MODE_GMII; 655 case PHY_INTERFACE_MODE_10GBASER: 656 return IF_MODE_10G; 657 default: 658 WARN_ON_ONCE(1); 659 return 0; 660 } 661} 662 663static struct phylink_pcs *memac_select_pcs(struct phylink_config *config, 664 phy_interface_t iface) 665{ 666 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 667 668 switch (iface) { 669 case PHY_INTERFACE_MODE_SGMII: 670 case PHY_INTERFACE_MODE_1000BASEX: 671 return memac->sgmii_pcs; 672 case PHY_INTERFACE_MODE_QSGMII: 673 return memac->qsgmii_pcs; 674 case PHY_INTERFACE_MODE_10GBASER: 675 return memac->xfi_pcs; 676 default: 677 return NULL; 678 } 679} 680 681static int memac_prepare(struct phylink_config *config, unsigned int mode, 682 phy_interface_t iface) 683{ 684 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 685 686 switch (iface) { 687 case PHY_INTERFACE_MODE_SGMII: 688 case PHY_INTERFACE_MODE_1000BASEX: 689 case PHY_INTERFACE_MODE_QSGMII: 690 case PHY_INTERFACE_MODE_10GBASER: 691 return phy_set_mode_ext(memac->serdes, PHY_MODE_ETHERNET, 692 iface); 693 default: 694 return 0; 695 } 696} 697 698static void memac_mac_config(struct phylink_config *config, unsigned int mode, 699 const struct phylink_link_state *state) 700{ 701 struct mac_device *mac_dev = fman_config_to_mac(config); 702 struct memac_regs __iomem *regs = mac_dev->fman_mac->regs; 703 u32 tmp = ioread32be(®s->if_mode); 704 705 tmp &= ~(IF_MODE_MASK | IF_MODE_RGMII); 706 tmp |= memac_if_mode(state->interface); 707 if (phylink_autoneg_inband(mode)) 708 tmp |= IF_MODE_RGMII_AUTO; 709 iowrite32be(tmp, ®s->if_mode); 710} 711 712static void memac_link_up(struct phylink_config *config, struct phy_device *phy, 713 unsigned int mode, phy_interface_t interface, 714 int speed, int duplex, bool tx_pause, bool rx_pause) 715{ 716 struct mac_device *mac_dev = fman_config_to_mac(config); 717 struct fman_mac *memac = mac_dev->fman_mac; 718 struct memac_regs __iomem *regs = memac->regs; 719 u32 tmp = memac_if_mode(interface); 720 u16 pause_time = tx_pause ? FSL_FM_PAUSE_TIME_ENABLE : 721 FSL_FM_PAUSE_TIME_DISABLE; 722 723 memac_set_tx_pause_frames(memac, 0, pause_time, 0); 724 memac_accept_rx_pause_frames(memac, rx_pause); 725 726 if (duplex == DUPLEX_HALF) 727 tmp |= IF_MODE_HD; 728 729 switch (speed) { 730 case SPEED_1000: 731 tmp |= IF_MODE_RGMII_1000; 732 break; 733 case SPEED_100: 734 tmp |= IF_MODE_RGMII_100; 735 break; 736 case SPEED_10: 737 tmp |= IF_MODE_RGMII_10; 738 break; 739 } 740 iowrite32be(tmp, ®s->if_mode); 741 742 /* TODO: EEE? */ 743 744 if (speed == SPEED_10000) { 745 if (memac->fm_rev_info.major == 6 && 746 memac->fm_rev_info.minor == 4) 747 tmp = TX_FIFO_SECTIONS_TX_AVAIL_SLOW_10G; 748 else 749 tmp = TX_FIFO_SECTIONS_TX_AVAIL_10G; 750 tmp |= TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_10G; 751 } else { 752 tmp = TX_FIFO_SECTIONS_TX_AVAIL_1G | 753 TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_1G; 754 } 755 iowrite32be(tmp, ®s->tx_fifo_sections); 756 757 mac_dev->update_speed(mac_dev, speed); 758 759 tmp = ioread32be(®s->command_config); 760 tmp |= CMD_CFG_RX_EN | CMD_CFG_TX_EN; 761 iowrite32be(tmp, ®s->command_config); 762} 763 764static void memac_link_down(struct phylink_config *config, unsigned int mode, 765 phy_interface_t interface) 766{ 767 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 768 struct memac_regs __iomem *regs = memac->regs; 769 u32 tmp; 770 771 /* TODO: graceful */ 772 tmp = ioread32be(®s->command_config); 773 tmp &= ~(CMD_CFG_RX_EN | CMD_CFG_TX_EN); 774 iowrite32be(tmp, ®s->command_config); 775} 776 777static const struct phylink_mac_ops memac_mac_ops = { 778 .mac_get_caps = memac_get_caps, 779 .mac_select_pcs = memac_select_pcs, 780 .mac_prepare = memac_prepare, 781 .mac_config = memac_mac_config, 782 .mac_link_up = memac_link_up, 783 .mac_link_down = memac_link_down, 784}; 785 786static int memac_modify_mac_address(struct fman_mac *memac, 787 const enet_addr_t *enet_addr) 788{ 789 add_addr_in_paddr(memac->regs, (const u8 *)(*enet_addr), 0); 790 791 return 0; 792} 793 794static int memac_add_hash_mac_address(struct fman_mac *memac, 795 enet_addr_t *eth_addr) 796{ 797 struct memac_regs __iomem *regs = memac->regs; 798 struct eth_hash_entry *hash_entry; 799 u32 hash; 800 u64 addr; 801 802 addr = ENET_ADDR_TO_UINT64(*eth_addr); 803 804 if (!(addr & GROUP_ADDRESS)) { 805 /* Unicast addresses not supported in hash */ 806 pr_err("Unicast Address\n"); 807 return -EINVAL; 808 } 809 hash = get_mac_addr_hash_code(addr) & HASH_CTRL_ADDR_MASK; 810 811 /* Create element to be added to the driver hash table */ 812 hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC); 813 if (!hash_entry) 814 return -ENOMEM; 815 hash_entry->addr = addr; 816 INIT_LIST_HEAD(&hash_entry->node); 817 818 list_add_tail(&hash_entry->node, 819 &memac->multicast_addr_hash->lsts[hash]); 820 iowrite32be(hash | HASH_CTRL_MCAST_EN, ®s->hashtable_ctrl); 821 822 return 0; 823} 824 825static int memac_set_allmulti(struct fman_mac *memac, bool enable) 826{ 827 u32 entry; 828 struct memac_regs __iomem *regs = memac->regs; 829 830 if (enable) { 831 for (entry = 0; entry < HASH_TABLE_SIZE; entry++) 832 iowrite32be(entry | HASH_CTRL_MCAST_EN, 833 ®s->hashtable_ctrl); 834 } else { 835 for (entry = 0; entry < HASH_TABLE_SIZE; entry++) 836 iowrite32be(entry & ~HASH_CTRL_MCAST_EN, 837 ®s->hashtable_ctrl); 838 } 839 840 memac->allmulti_enabled = enable; 841 842 return 0; 843} 844 845static int memac_set_tstamp(struct fman_mac *memac, bool enable) 846{ 847 return 0; /* Always enabled. */ 848} 849 850static int memac_del_hash_mac_address(struct fman_mac *memac, 851 enet_addr_t *eth_addr) 852{ 853 struct memac_regs __iomem *regs = memac->regs; 854 struct eth_hash_entry *hash_entry = NULL; 855 struct list_head *pos; 856 u32 hash; 857 u64 addr; 858 859 addr = ENET_ADDR_TO_UINT64(*eth_addr); 860 861 hash = get_mac_addr_hash_code(addr) & HASH_CTRL_ADDR_MASK; 862 863 list_for_each(pos, &memac->multicast_addr_hash->lsts[hash]) { 864 hash_entry = ETH_HASH_ENTRY_OBJ(pos); 865 if (hash_entry && hash_entry->addr == addr) { 866 list_del_init(&hash_entry->node); 867 kfree(hash_entry); 868 break; 869 } 870 } 871 872 if (!memac->allmulti_enabled) { 873 if (list_empty(&memac->multicast_addr_hash->lsts[hash])) 874 iowrite32be(hash & ~HASH_CTRL_MCAST_EN, 875 ®s->hashtable_ctrl); 876 } 877 878 return 0; 879} 880 881static int memac_set_exception(struct fman_mac *memac, 882 enum fman_mac_exceptions exception, bool enable) 883{ 884 u32 bit_mask = 0; 885 886 bit_mask = get_exception_flag(exception); 887 if (bit_mask) { 888 if (enable) 889 memac->exceptions |= bit_mask; 890 else 891 memac->exceptions &= ~bit_mask; 892 } else { 893 pr_err("Undefined exception\n"); 894 return -EINVAL; 895 } 896 set_exception(memac->regs, bit_mask, enable); 897 898 return 0; 899} 900 901static int memac_init(struct fman_mac *memac) 902{ 903 struct memac_cfg *memac_drv_param; 904 enet_addr_t eth_addr; 905 int err; 906 u32 reg32 = 0; 907 908 err = check_init_parameters(memac); 909 if (err) 910 return err; 911 912 memac_drv_param = memac->memac_drv_param; 913 914 /* First, reset the MAC if desired. */ 915 if (memac_drv_param->reset_on_init) { 916 err = reset(memac->regs); 917 if (err) { 918 pr_err("mEMAC reset failed\n"); 919 return err; 920 } 921 } 922 923 /* MAC Address */ 924 if (memac->addr != 0) { 925 MAKE_ENET_ADDR_FROM_UINT64(memac->addr, eth_addr); 926 add_addr_in_paddr(memac->regs, (const u8 *)eth_addr, 0); 927 } 928 929 init(memac->regs, memac->memac_drv_param, memac->exceptions); 930 931 /* FM_RX_FIFO_CORRUPT_ERRATA_10GMAC_A006320 errata workaround 932 * Exists only in FMan 6.0 and 6.3. 933 */ 934 if ((memac->fm_rev_info.major == 6) && 935 ((memac->fm_rev_info.minor == 0) || 936 (memac->fm_rev_info.minor == 3))) { 937 /* MAC strips CRC from received frames - this workaround 938 * should decrease the likelihood of bug appearance 939 */ 940 reg32 = ioread32be(&memac->regs->command_config); 941 reg32 &= ~CMD_CFG_CRC_FWD; 942 iowrite32be(reg32, &memac->regs->command_config); 943 } 944 945 /* Max Frame Length */ 946 err = fman_set_mac_max_frame(memac->fm, memac->mac_id, 947 memac_drv_param->max_frame_length); 948 if (err) { 949 pr_err("settings Mac max frame length is FAILED\n"); 950 return err; 951 } 952 953 memac->multicast_addr_hash = alloc_hash_table(HASH_TABLE_SIZE); 954 if (!memac->multicast_addr_hash) { 955 free_init_resources(memac); 956 pr_err("allocation hash table is FAILED\n"); 957 return -ENOMEM; 958 } 959 960 memac->unicast_addr_hash = alloc_hash_table(HASH_TABLE_SIZE); 961 if (!memac->unicast_addr_hash) { 962 free_init_resources(memac); 963 pr_err("allocation hash table is FAILED\n"); 964 return -ENOMEM; 965 } 966 967 fman_register_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 968 FMAN_INTR_TYPE_ERR, memac_err_exception, memac); 969 970 fman_register_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 971 FMAN_INTR_TYPE_NORMAL, memac_exception, memac); 972 973 return 0; 974} 975 976static void pcs_put(struct phylink_pcs *pcs) 977{ 978 if (IS_ERR_OR_NULL(pcs)) 979 return; 980 981 lynx_pcs_destroy(pcs); 982} 983 984static int memac_free(struct fman_mac *memac) 985{ 986 free_init_resources(memac); 987 988 pcs_put(memac->sgmii_pcs); 989 pcs_put(memac->qsgmii_pcs); 990 pcs_put(memac->xfi_pcs); 991 kfree(memac->memac_drv_param); 992 kfree(memac); 993 994 return 0; 995} 996 997static struct fman_mac *memac_config(struct mac_device *mac_dev, 998 struct fman_mac_params *params) 999{ 1000 struct fman_mac *memac; 1001 struct memac_cfg *memac_drv_param; 1002 1003 /* allocate memory for the m_emac data structure */ 1004 memac = kzalloc(sizeof(*memac), GFP_KERNEL); 1005 if (!memac) 1006 return NULL; 1007 1008 /* allocate memory for the m_emac driver parameters data structure */ 1009 memac_drv_param = kzalloc(sizeof(*memac_drv_param), GFP_KERNEL); 1010 if (!memac_drv_param) { 1011 memac_free(memac); 1012 return NULL; 1013 } 1014 1015 /* Plant parameter structure pointer */ 1016 memac->memac_drv_param = memac_drv_param; 1017 1018 set_dflts(memac_drv_param); 1019 1020 memac->addr = ENET_ADDR_TO_UINT64(mac_dev->addr); 1021 1022 memac->regs = mac_dev->vaddr; 1023 memac->mac_id = params->mac_id; 1024 memac->exceptions = (MEMAC_IMASK_TSECC_ER | MEMAC_IMASK_TECC_ER | 1025 MEMAC_IMASK_RECC_ER | MEMAC_IMASK_MGI); 1026 memac->exception_cb = params->exception_cb; 1027 memac->event_cb = params->event_cb; 1028 memac->dev_id = mac_dev; 1029 memac->fm = params->fm; 1030 1031 /* Save FMan revision */ 1032 fman_get_revision(memac->fm, &memac->fm_rev_info); 1033 1034 return memac; 1035} 1036 1037static struct phylink_pcs *memac_pcs_create(struct device_node *mac_node, 1038 int index) 1039{ 1040 struct device_node *node; 1041 struct phylink_pcs *pcs; 1042 1043 node = of_parse_phandle(mac_node, "pcsphy-handle", index); 1044 if (!node) 1045 return ERR_PTR(-ENODEV); 1046 1047 pcs = lynx_pcs_create_fwnode(of_fwnode_handle(node)); 1048 of_node_put(node); 1049 1050 return pcs; 1051} 1052 1053static bool memac_supports(struct mac_device *mac_dev, phy_interface_t iface) 1054{ 1055 /* If there's no serdes device, assume that it's been configured for 1056 * whatever the default interface mode is. 1057 */ 1058 if (!mac_dev->fman_mac->serdes) 1059 return mac_dev->phy_if == iface; 1060 /* Otherwise, ask the serdes */ 1061 return !phy_validate(mac_dev->fman_mac->serdes, PHY_MODE_ETHERNET, 1062 iface, NULL); 1063} 1064 1065int memac_initialization(struct mac_device *mac_dev, 1066 struct device_node *mac_node, 1067 struct fman_mac_params *params) 1068{ 1069 int err; 1070 struct device_node *fixed; 1071 struct phylink_pcs *pcs; 1072 struct fman_mac *memac; 1073 unsigned long capabilities; 1074 unsigned long *supported; 1075 1076 /* The internal connection to the serdes is XGMII, but this isn't 1077 * really correct for the phy mode (which is the external connection). 1078 * However, this is how all older device trees say that they want 1079 * 10GBASE-R (aka XFI), so just convert it for them. 1080 */ 1081 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII) 1082 mac_dev->phy_if = PHY_INTERFACE_MODE_10GBASER; 1083 1084 mac_dev->phylink_ops = &memac_mac_ops; 1085 mac_dev->set_promisc = memac_set_promiscuous; 1086 mac_dev->change_addr = memac_modify_mac_address; 1087 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address; 1088 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address; 1089 mac_dev->set_exception = memac_set_exception; 1090 mac_dev->set_allmulti = memac_set_allmulti; 1091 mac_dev->set_tstamp = memac_set_tstamp; 1092 mac_dev->set_multi = fman_set_multi; 1093 mac_dev->enable = memac_enable; 1094 mac_dev->disable = memac_disable; 1095 1096 mac_dev->fman_mac = memac_config(mac_dev, params); 1097 if (!mac_dev->fman_mac) 1098 return -EINVAL; 1099 1100 memac = mac_dev->fman_mac; 1101 memac->memac_drv_param->max_frame_length = fman_get_max_frm(); 1102 memac->memac_drv_param->reset_on_init = true; 1103 1104 err = of_property_match_string(mac_node, "pcs-handle-names", "xfi"); 1105 if (err >= 0) { 1106 memac->xfi_pcs = memac_pcs_create(mac_node, err); 1107 if (IS_ERR(memac->xfi_pcs)) { 1108 err = PTR_ERR(memac->xfi_pcs); 1109 dev_err_probe(mac_dev->dev, err, "missing xfi pcs\n"); 1110 goto _return_fm_mac_free; 1111 } 1112 } else if (err != -EINVAL && err != -ENODATA) { 1113 goto _return_fm_mac_free; 1114 } 1115 1116 err = of_property_match_string(mac_node, "pcs-handle-names", "qsgmii"); 1117 if (err >= 0) { 1118 memac->qsgmii_pcs = memac_pcs_create(mac_node, err); 1119 if (IS_ERR(memac->qsgmii_pcs)) { 1120 err = PTR_ERR(memac->qsgmii_pcs); 1121 dev_err_probe(mac_dev->dev, err, 1122 "missing qsgmii pcs\n"); 1123 goto _return_fm_mac_free; 1124 } 1125 } else if (err != -EINVAL && err != -ENODATA) { 1126 goto _return_fm_mac_free; 1127 } 1128 1129 /* For compatibility, if pcs-handle-names is missing, we assume this 1130 * phy is the first one in pcsphy-handle 1131 */ 1132 err = of_property_match_string(mac_node, "pcs-handle-names", "sgmii"); 1133 if (err == -EINVAL || err == -ENODATA) 1134 pcs = memac_pcs_create(mac_node, 0); 1135 else if (err < 0) 1136 goto _return_fm_mac_free; 1137 else 1138 pcs = memac_pcs_create(mac_node, err); 1139 1140 if (IS_ERR(pcs)) { 1141 err = PTR_ERR(pcs); 1142 dev_err_probe(mac_dev->dev, err, "missing pcs\n"); 1143 goto _return_fm_mac_free; 1144 } 1145 1146 /* If err is set here, it means that pcs-handle-names was missing above 1147 * (and therefore that xfi_pcs cannot be set). If we are defaulting to 1148 * XGMII, assume this is for XFI. Otherwise, assume it is for SGMII. 1149 */ 1150 if (err && mac_dev->phy_if == PHY_INTERFACE_MODE_10GBASER) 1151 memac->xfi_pcs = pcs; 1152 else 1153 memac->sgmii_pcs = pcs; 1154 1155 memac->serdes = devm_of_phy_optional_get(mac_dev->dev, mac_node, 1156 "serdes"); 1157 if (!memac->serdes) { 1158 dev_dbg(mac_dev->dev, "could not get (optional) serdes\n"); 1159 } else if (IS_ERR(memac->serdes)) { 1160 err = PTR_ERR(memac->serdes); 1161 goto _return_fm_mac_free; 1162 } 1163 1164 /* TODO: The following interface modes are supported by (some) hardware 1165 * but not by this driver: 1166 * - 1000BASE-KX 1167 * - 10GBASE-KR 1168 * - XAUI/HiGig 1169 */ 1170 supported = mac_dev->phylink_config.supported_interfaces; 1171 1172 /* Note that half duplex is only supported on 10/100M interfaces. */ 1173 1174 if (memac->sgmii_pcs && 1175 (memac_supports(mac_dev, PHY_INTERFACE_MODE_SGMII) || 1176 memac_supports(mac_dev, PHY_INTERFACE_MODE_1000BASEX))) { 1177 __set_bit(PHY_INTERFACE_MODE_SGMII, supported); 1178 __set_bit(PHY_INTERFACE_MODE_1000BASEX, supported); 1179 } 1180 1181 if (memac->sgmii_pcs && 1182 memac_supports(mac_dev, PHY_INTERFACE_MODE_2500BASEX)) 1183 __set_bit(PHY_INTERFACE_MODE_2500BASEX, supported); 1184 1185 if (memac->qsgmii_pcs && 1186 memac_supports(mac_dev, PHY_INTERFACE_MODE_QSGMII)) 1187 __set_bit(PHY_INTERFACE_MODE_QSGMII, supported); 1188 else if (mac_dev->phy_if == PHY_INTERFACE_MODE_QSGMII) 1189 dev_warn(mac_dev->dev, "no QSGMII pcs specified\n"); 1190 1191 if (memac->xfi_pcs && 1192 memac_supports(mac_dev, PHY_INTERFACE_MODE_10GBASER)) { 1193 __set_bit(PHY_INTERFACE_MODE_10GBASER, supported); 1194 } else { 1195 /* From what I can tell, no 10g macs support RGMII. */ 1196 phy_interface_set_rgmii(supported); 1197 __set_bit(PHY_INTERFACE_MODE_MII, supported); 1198 } 1199 1200 capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | MAC_10 | MAC_100; 1201 capabilities |= MAC_1000FD | MAC_2500FD | MAC_10000FD; 1202 1203 /* These SoCs don't support half duplex at all; there's no different 1204 * FMan version or compatible, so we just have to check the machine 1205 * compatible instead 1206 */ 1207 if (of_machine_is_compatible("fsl,ls1043a") || 1208 of_machine_is_compatible("fsl,ls1046a") || 1209 of_machine_is_compatible("fsl,B4QDS")) 1210 capabilities &= ~(MAC_10HD | MAC_100HD); 1211 1212 mac_dev->phylink_config.mac_capabilities = capabilities; 1213 1214 /* The T2080 and T4240 don't support half duplex RGMII. There is no 1215 * other way to identify these SoCs, so just use the machine 1216 * compatible. 1217 */ 1218 if (of_machine_is_compatible("fsl,T2080QDS") || 1219 of_machine_is_compatible("fsl,T2080RDB") || 1220 of_machine_is_compatible("fsl,T2081QDS") || 1221 of_machine_is_compatible("fsl,T4240QDS") || 1222 of_machine_is_compatible("fsl,T4240RDB")) 1223 memac->rgmii_no_half_duplex = true; 1224 1225 /* Most boards should use MLO_AN_INBAND, but existing boards don't have 1226 * a managed property. Default to MLO_AN_INBAND if nothing else is 1227 * specified. We need to be careful and not enable this if we have a 1228 * fixed link or if we are using MII or RGMII, since those 1229 * configurations modes don't use in-band autonegotiation. 1230 */ 1231 fixed = of_get_child_by_name(mac_node, "fixed-link"); 1232 if (!fixed && !of_property_read_bool(mac_node, "fixed-link") && 1233 !of_property_read_bool(mac_node, "managed") && 1234 mac_dev->phy_if != PHY_INTERFACE_MODE_MII && 1235 !phy_interface_mode_is_rgmii(mac_dev->phy_if)) 1236 mac_dev->phylink_config.ovr_an_inband = true; 1237 of_node_put(fixed); 1238 1239 err = memac_init(mac_dev->fman_mac); 1240 if (err < 0) 1241 goto _return_fm_mac_free; 1242 1243 dev_info(mac_dev->dev, "FMan MEMAC\n"); 1244 1245 return 0; 1246 1247_return_fm_mac_free: 1248 memac_free(mac_dev->fman_mac); 1249 return err; 1250} 1251