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) \ 47 do { \ 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 115 116 struct 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 */ 124 struct 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 }; 265 266 struct memac_cfg { 267 bool reset_on_init; 268 bool pause_ignore; 269 bool promiscuous_mode_enable; 270 u16 max_frame_length; 271 u16 pause_quanta; 272 u32 tx_ipg_length; 273 }; 274 275 struct fman_mac { 276 /* Pointer to MAC memory mapped registers */ 277 struct memac_regs __iomem *regs; 278 /* MAC address of device */ 279 u64 addr; 280 struct mac_device *dev_id; /* device cookie used by the exception cbs */ 281 fman_mac_exception_cb *exception_cb; 282 fman_mac_exception_cb *event_cb; 283 /* Pointer to driver's global address hash table */ 284 struct eth_hash_t *multicast_addr_hash; 285 /* Pointer to driver's individual address hash table */ 286 struct eth_hash_t *unicast_addr_hash; 287 u8 mac_id; 288 u32 exceptions; 289 struct memac_cfg *memac_drv_param; 290 void *fm; 291 struct fman_rev_info fm_rev_info; 292 struct phy *serdes; 293 struct phylink_pcs *sgmii_pcs; 294 struct phylink_pcs *qsgmii_pcs; 295 struct phylink_pcs *xfi_pcs; 296 bool allmulti_enabled; 297 bool rgmii_no_half_duplex; 298 }; 299 300 static void add_addr_in_paddr(struct memac_regs __iomem *regs, const u8 *adr, 301 u8 paddr_num) 302 { 303 u32 tmp0, tmp1; 304 305 tmp0 = (u32)(adr[0] | adr[1] << 8 | adr[2] << 16 | adr[3] << 24); 306 tmp1 = (u32)(adr[4] | adr[5] << 8); 307 308 if (paddr_num == 0) { 309 iowrite32be(tmp0, ®s->mac_addr0.mac_addr_l); 310 iowrite32be(tmp1, ®s->mac_addr0.mac_addr_u); 311 } else { 312 iowrite32be(tmp0, ®s->mac_addr[paddr_num - 1].mac_addr_l); 313 iowrite32be(tmp1, ®s->mac_addr[paddr_num - 1].mac_addr_u); 314 } 315 } 316 317 static int reset(struct memac_regs __iomem *regs) 318 { 319 u32 tmp; 320 int count; 321 322 tmp = ioread32be(®s->command_config); 323 324 tmp |= CMD_CFG_SW_RESET; 325 326 iowrite32be(tmp, ®s->command_config); 327 328 count = 100; 329 do { 330 udelay(1); 331 } while ((ioread32be(®s->command_config) & CMD_CFG_SW_RESET) && 332 --count); 333 334 if (count == 0) 335 return -EBUSY; 336 337 return 0; 338 } 339 340 static void set_exception(struct memac_regs __iomem *regs, u32 val, 341 bool enable) 342 { 343 u32 tmp; 344 345 tmp = ioread32be(®s->imask); 346 if (enable) 347 tmp |= val; 348 else 349 tmp &= ~val; 350 351 iowrite32be(tmp, ®s->imask); 352 } 353 354 static int init(struct memac_regs __iomem *regs, struct memac_cfg *cfg, 355 u32 exceptions) 356 { 357 u32 tmp; 358 359 /* Config */ 360 tmp = 0; 361 if (cfg->promiscuous_mode_enable) 362 tmp |= CMD_CFG_PROMIS_EN; 363 if (cfg->pause_ignore) 364 tmp |= CMD_CFG_PAUSE_IGNORE; 365 366 /* Payload length check disable */ 367 tmp |= CMD_CFG_NO_LEN_CHK; 368 /* Enable padding of frames in transmit direction */ 369 tmp |= CMD_CFG_TX_PAD_EN; 370 371 tmp |= CMD_CFG_CRC_FWD; 372 373 iowrite32be(tmp, ®s->command_config); 374 375 /* Max Frame Length */ 376 iowrite32be((u32)cfg->max_frame_length, ®s->maxfrm); 377 378 /* Pause Time */ 379 iowrite32be((u32)cfg->pause_quanta, ®s->pause_quanta[0]); 380 iowrite32be((u32)0, ®s->pause_thresh[0]); 381 382 /* clear all pending events and set-up interrupts */ 383 iowrite32be(0xffffffff, ®s->ievent); 384 set_exception(regs, exceptions, true); 385 386 return 0; 387 } 388 389 static void set_dflts(struct memac_cfg *cfg) 390 { 391 cfg->reset_on_init = false; 392 cfg->promiscuous_mode_enable = false; 393 cfg->pause_ignore = false; 394 cfg->tx_ipg_length = DEFAULT_TX_IPG_LENGTH; 395 cfg->max_frame_length = DEFAULT_FRAME_LENGTH; 396 cfg->pause_quanta = DEFAULT_PAUSE_QUANTA; 397 } 398 399 static u32 get_mac_addr_hash_code(u64 eth_addr) 400 { 401 u64 mask1, mask2; 402 u32 xor_val = 0; 403 u8 i, j; 404 405 for (i = 0; i < 6; i++) { 406 mask1 = eth_addr & (u64)0x01; 407 eth_addr >>= 1; 408 409 for (j = 0; j < 7; j++) { 410 mask2 = eth_addr & (u64)0x01; 411 mask1 ^= mask2; 412 eth_addr >>= 1; 413 } 414 415 xor_val |= (mask1 << (5 - i)); 416 } 417 418 return xor_val; 419 } 420 421 static int check_init_parameters(struct fman_mac *memac) 422 { 423 if (!memac->exception_cb) { 424 pr_err("Uninitialized exception handler\n"); 425 return -EINVAL; 426 } 427 if (!memac->event_cb) { 428 pr_warn("Uninitialize event handler\n"); 429 return -EINVAL; 430 } 431 432 return 0; 433 } 434 435 static int get_exception_flag(enum fman_mac_exceptions exception) 436 { 437 u32 bit_mask; 438 439 switch (exception) { 440 case FM_MAC_EX_10G_TX_ECC_ER: 441 bit_mask = MEMAC_IMASK_TECC_ER; 442 break; 443 case FM_MAC_EX_10G_RX_ECC_ER: 444 bit_mask = MEMAC_IMASK_RECC_ER; 445 break; 446 case FM_MAC_EX_TS_FIFO_ECC_ERR: 447 bit_mask = MEMAC_IMASK_TSECC_ER; 448 break; 449 case FM_MAC_EX_MAGIC_PACKET_INDICATION: 450 bit_mask = MEMAC_IMASK_MGI; 451 break; 452 default: 453 bit_mask = 0; 454 break; 455 } 456 457 return bit_mask; 458 } 459 460 static void memac_err_exception(void *handle) 461 { 462 struct fman_mac *memac = (struct fman_mac *)handle; 463 struct memac_regs __iomem *regs = memac->regs; 464 u32 event, imask; 465 466 event = ioread32be(®s->ievent); 467 imask = ioread32be(®s->imask); 468 469 /* Imask include both error and notification/event bits. 470 * Leaving only error bits enabled by imask. 471 * The imask error bits are shifted by 16 bits offset from 472 * their corresponding location in the ievent - hence the >> 16 473 */ 474 event &= ((imask & MEMAC_ALL_ERRS_IMASK) >> 16); 475 476 iowrite32be(event, ®s->ievent); 477 478 if (event & MEMAC_IEVNT_TS_ECC_ER) 479 memac->exception_cb(memac->dev_id, FM_MAC_EX_TS_FIFO_ECC_ERR); 480 if (event & MEMAC_IEVNT_TX_ECC_ER) 481 memac->exception_cb(memac->dev_id, FM_MAC_EX_10G_TX_ECC_ER); 482 if (event & MEMAC_IEVNT_RX_ECC_ER) 483 memac->exception_cb(memac->dev_id, FM_MAC_EX_10G_RX_ECC_ER); 484 } 485 486 static void memac_exception(void *handle) 487 { 488 struct fman_mac *memac = (struct fman_mac *)handle; 489 struct memac_regs __iomem *regs = memac->regs; 490 u32 event, imask; 491 492 event = ioread32be(®s->ievent); 493 imask = ioread32be(®s->imask); 494 495 /* Imask include both error and notification/event bits. 496 * Leaving only error bits enabled by imask. 497 * The imask error bits are shifted by 16 bits offset from 498 * their corresponding location in the ievent - hence the >> 16 499 */ 500 event &= ((imask & MEMAC_ALL_ERRS_IMASK) >> 16); 501 502 iowrite32be(event, ®s->ievent); 503 504 if (event & MEMAC_IEVNT_MGI) 505 memac->exception_cb(memac->dev_id, 506 FM_MAC_EX_MAGIC_PACKET_INDICATION); 507 } 508 509 static void free_init_resources(struct fman_mac *memac) 510 { 511 fman_unregister_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 512 FMAN_INTR_TYPE_ERR); 513 514 fman_unregister_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 515 FMAN_INTR_TYPE_NORMAL); 516 517 /* release the driver's group hash table */ 518 free_hash_table(memac->multicast_addr_hash); 519 memac->multicast_addr_hash = NULL; 520 521 /* release the driver's individual hash table */ 522 free_hash_table(memac->unicast_addr_hash); 523 memac->unicast_addr_hash = NULL; 524 } 525 526 static int memac_enable(struct fman_mac *memac) 527 { 528 int ret; 529 530 ret = phy_init(memac->serdes); 531 if (ret) { 532 dev_err(memac->dev_id->dev, 533 "could not initialize serdes: %pe\n", ERR_PTR(ret)); 534 return ret; 535 } 536 537 ret = phy_power_on(memac->serdes); 538 if (ret) { 539 dev_err(memac->dev_id->dev, 540 "could not power on serdes: %pe\n", ERR_PTR(ret)); 541 phy_exit(memac->serdes); 542 } 543 544 return ret; 545 } 546 547 static void memac_disable(struct fman_mac *memac) 548 { 549 phy_power_off(memac->serdes); 550 phy_exit(memac->serdes); 551 } 552 553 static int memac_set_promiscuous(struct fman_mac *memac, bool new_val) 554 { 555 struct memac_regs __iomem *regs = memac->regs; 556 u32 tmp; 557 558 tmp = ioread32be(®s->command_config); 559 if (new_val) 560 tmp |= CMD_CFG_PROMIS_EN; 561 else 562 tmp &= ~CMD_CFG_PROMIS_EN; 563 564 iowrite32be(tmp, ®s->command_config); 565 566 return 0; 567 } 568 569 static int memac_set_tx_pause_frames(struct fman_mac *memac, u8 priority, 570 u16 pause_time, u16 thresh_time) 571 { 572 struct memac_regs __iomem *regs = memac->regs; 573 u32 tmp; 574 575 tmp = ioread32be(®s->tx_fifo_sections); 576 577 GET_TX_EMPTY_DEFAULT_VALUE(tmp); 578 iowrite32be(tmp, ®s->tx_fifo_sections); 579 580 tmp = ioread32be(®s->command_config); 581 tmp &= ~CMD_CFG_PFC_MODE; 582 583 iowrite32be(tmp, ®s->command_config); 584 585 tmp = ioread32be(®s->pause_quanta[priority / 2]); 586 if (priority % 2) 587 tmp &= CLXY_PAUSE_QUANTA_CLX_PQNT; 588 else 589 tmp &= CLXY_PAUSE_QUANTA_CLY_PQNT; 590 tmp |= ((u32)pause_time << (16 * (priority % 2))); 591 iowrite32be(tmp, ®s->pause_quanta[priority / 2]); 592 593 tmp = ioread32be(®s->pause_thresh[priority / 2]); 594 if (priority % 2) 595 tmp &= CLXY_PAUSE_THRESH_CLX_QTH; 596 else 597 tmp &= CLXY_PAUSE_THRESH_CLY_QTH; 598 tmp |= ((u32)thresh_time << (16 * (priority % 2))); 599 iowrite32be(tmp, ®s->pause_thresh[priority / 2]); 600 601 return 0; 602 } 603 604 static int memac_accept_rx_pause_frames(struct fman_mac *memac, bool en) 605 { 606 struct memac_regs __iomem *regs = memac->regs; 607 u32 tmp; 608 609 tmp = ioread32be(®s->command_config); 610 if (en) 611 tmp &= ~CMD_CFG_PAUSE_IGNORE; 612 else 613 tmp |= CMD_CFG_PAUSE_IGNORE; 614 615 iowrite32be(tmp, ®s->command_config); 616 617 return 0; 618 } 619 620 static unsigned long memac_get_caps(struct phylink_config *config, 621 phy_interface_t interface) 622 { 623 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 624 unsigned long caps = config->mac_capabilities; 625 626 if (phy_interface_mode_is_rgmii(interface) && 627 memac->rgmii_no_half_duplex) 628 caps &= ~(MAC_10HD | MAC_100HD); 629 630 return caps; 631 } 632 633 /** 634 * memac_if_mode() - Convert an interface mode into an IF_MODE config 635 * @interface: A phy interface mode 636 * 637 * Return: A configuration word, suitable for programming into the lower bits 638 * of %IF_MODE. 639 */ 640 static u32 memac_if_mode(phy_interface_t interface) 641 { 642 switch (interface) { 643 case PHY_INTERFACE_MODE_MII: 644 return IF_MODE_MII; 645 case PHY_INTERFACE_MODE_RGMII: 646 case PHY_INTERFACE_MODE_RGMII_ID: 647 case PHY_INTERFACE_MODE_RGMII_RXID: 648 case PHY_INTERFACE_MODE_RGMII_TXID: 649 return IF_MODE_GMII | IF_MODE_RGMII; 650 case PHY_INTERFACE_MODE_SGMII: 651 case PHY_INTERFACE_MODE_1000BASEX: 652 case PHY_INTERFACE_MODE_QSGMII: 653 return IF_MODE_GMII; 654 case PHY_INTERFACE_MODE_10GBASER: 655 return IF_MODE_10G; 656 default: 657 WARN_ON_ONCE(1); 658 return 0; 659 } 660 } 661 662 static struct phylink_pcs *memac_select_pcs(struct phylink_config *config, 663 phy_interface_t iface) 664 { 665 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 666 667 switch (iface) { 668 case PHY_INTERFACE_MODE_SGMII: 669 case PHY_INTERFACE_MODE_1000BASEX: 670 return memac->sgmii_pcs; 671 case PHY_INTERFACE_MODE_QSGMII: 672 return memac->qsgmii_pcs; 673 case PHY_INTERFACE_MODE_10GBASER: 674 return memac->xfi_pcs; 675 default: 676 return NULL; 677 } 678 } 679 680 static int memac_prepare(struct phylink_config *config, unsigned int mode, 681 phy_interface_t iface) 682 { 683 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 684 685 switch (iface) { 686 case PHY_INTERFACE_MODE_SGMII: 687 case PHY_INTERFACE_MODE_1000BASEX: 688 case PHY_INTERFACE_MODE_QSGMII: 689 case PHY_INTERFACE_MODE_10GBASER: 690 return phy_set_mode_ext(memac->serdes, PHY_MODE_ETHERNET, 691 iface); 692 default: 693 return 0; 694 } 695 } 696 697 static void memac_mac_config(struct phylink_config *config, unsigned int mode, 698 const struct phylink_link_state *state) 699 { 700 struct mac_device *mac_dev = fman_config_to_mac(config); 701 struct memac_regs __iomem *regs = mac_dev->fman_mac->regs; 702 u32 tmp = ioread32be(®s->if_mode); 703 704 tmp &= ~(IF_MODE_MASK | IF_MODE_RGMII); 705 tmp |= memac_if_mode(state->interface); 706 if (phylink_autoneg_inband(mode)) 707 tmp |= IF_MODE_RGMII_AUTO; 708 iowrite32be(tmp, ®s->if_mode); 709 } 710 711 static void memac_link_up(struct phylink_config *config, struct phy_device *phy, 712 unsigned int mode, phy_interface_t interface, 713 int speed, int duplex, bool tx_pause, bool rx_pause) 714 { 715 struct mac_device *mac_dev = fman_config_to_mac(config); 716 struct fman_mac *memac = mac_dev->fman_mac; 717 struct memac_regs __iomem *regs = memac->regs; 718 u32 tmp = memac_if_mode(interface); 719 u16 pause_time = tx_pause ? FSL_FM_PAUSE_TIME_ENABLE : 720 FSL_FM_PAUSE_TIME_DISABLE; 721 722 memac_set_tx_pause_frames(memac, 0, pause_time, 0); 723 memac_accept_rx_pause_frames(memac, rx_pause); 724 725 if (duplex == DUPLEX_HALF) 726 tmp |= IF_MODE_HD; 727 728 switch (speed) { 729 case SPEED_1000: 730 tmp |= IF_MODE_RGMII_1000; 731 break; 732 case SPEED_100: 733 tmp |= IF_MODE_RGMII_100; 734 break; 735 case SPEED_10: 736 tmp |= IF_MODE_RGMII_10; 737 break; 738 } 739 iowrite32be(tmp, ®s->if_mode); 740 741 /* TODO: EEE? */ 742 743 if (speed == SPEED_10000) { 744 if (memac->fm_rev_info.major == 6 && 745 memac->fm_rev_info.minor == 4) 746 tmp = TX_FIFO_SECTIONS_TX_AVAIL_SLOW_10G; 747 else 748 tmp = TX_FIFO_SECTIONS_TX_AVAIL_10G; 749 tmp |= TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_10G; 750 } else { 751 tmp = TX_FIFO_SECTIONS_TX_AVAIL_1G | 752 TX_FIFO_SECTIONS_TX_EMPTY_DEFAULT_1G; 753 } 754 iowrite32be(tmp, ®s->tx_fifo_sections); 755 756 mac_dev->update_speed(mac_dev, speed); 757 758 tmp = ioread32be(®s->command_config); 759 tmp |= CMD_CFG_RX_EN | CMD_CFG_TX_EN; 760 iowrite32be(tmp, ®s->command_config); 761 } 762 763 static void memac_link_down(struct phylink_config *config, unsigned int mode, 764 phy_interface_t interface) 765 { 766 struct fman_mac *memac = fman_config_to_mac(config)->fman_mac; 767 struct memac_regs __iomem *regs = memac->regs; 768 u32 tmp; 769 770 /* TODO: graceful */ 771 tmp = ioread32be(®s->command_config); 772 tmp &= ~(CMD_CFG_RX_EN | CMD_CFG_TX_EN); 773 iowrite32be(tmp, ®s->command_config); 774 } 775 776 static const struct phylink_mac_ops memac_mac_ops = { 777 .mac_get_caps = memac_get_caps, 778 .mac_select_pcs = memac_select_pcs, 779 .mac_prepare = memac_prepare, 780 .mac_config = memac_mac_config, 781 .mac_link_up = memac_link_up, 782 .mac_link_down = memac_link_down, 783 }; 784 785 static int memac_modify_mac_address(struct fman_mac *memac, 786 const enet_addr_t *enet_addr) 787 { 788 add_addr_in_paddr(memac->regs, (const u8 *)(*enet_addr), 0); 789 790 return 0; 791 } 792 793 static int memac_add_hash_mac_address(struct fman_mac *memac, 794 enet_addr_t *eth_addr) 795 { 796 struct memac_regs __iomem *regs = memac->regs; 797 struct eth_hash_entry *hash_entry; 798 u32 hash; 799 u64 addr; 800 801 addr = ENET_ADDR_TO_UINT64(*eth_addr); 802 803 if (!(addr & GROUP_ADDRESS)) { 804 /* Unicast addresses not supported in hash */ 805 pr_err("Unicast Address\n"); 806 return -EINVAL; 807 } 808 hash = get_mac_addr_hash_code(addr) & HASH_CTRL_ADDR_MASK; 809 810 /* Create element to be added to the driver hash table */ 811 hash_entry = kmalloc(sizeof(*hash_entry), GFP_ATOMIC); 812 if (!hash_entry) 813 return -ENOMEM; 814 hash_entry->addr = addr; 815 INIT_LIST_HEAD(&hash_entry->node); 816 817 list_add_tail(&hash_entry->node, 818 &memac->multicast_addr_hash->lsts[hash]); 819 iowrite32be(hash | HASH_CTRL_MCAST_EN, ®s->hashtable_ctrl); 820 821 return 0; 822 } 823 824 static int memac_set_allmulti(struct fman_mac *memac, bool enable) 825 { 826 u32 entry; 827 struct memac_regs __iomem *regs = memac->regs; 828 829 if (enable) { 830 for (entry = 0; entry < HASH_TABLE_SIZE; entry++) 831 iowrite32be(entry | HASH_CTRL_MCAST_EN, 832 ®s->hashtable_ctrl); 833 } else { 834 for (entry = 0; entry < HASH_TABLE_SIZE; entry++) 835 iowrite32be(entry & ~HASH_CTRL_MCAST_EN, 836 ®s->hashtable_ctrl); 837 } 838 839 memac->allmulti_enabled = enable; 840 841 return 0; 842 } 843 844 static int memac_set_tstamp(struct fman_mac *memac, bool enable) 845 { 846 return 0; /* Always enabled. */ 847 } 848 849 static int memac_del_hash_mac_address(struct fman_mac *memac, 850 enet_addr_t *eth_addr) 851 { 852 struct memac_regs __iomem *regs = memac->regs; 853 struct eth_hash_entry *hash_entry = NULL; 854 struct list_head *pos; 855 u32 hash; 856 u64 addr; 857 858 addr = ENET_ADDR_TO_UINT64(*eth_addr); 859 860 hash = get_mac_addr_hash_code(addr) & HASH_CTRL_ADDR_MASK; 861 862 list_for_each(pos, &memac->multicast_addr_hash->lsts[hash]) { 863 hash_entry = ETH_HASH_ENTRY_OBJ(pos); 864 if (hash_entry && hash_entry->addr == addr) { 865 list_del_init(&hash_entry->node); 866 kfree(hash_entry); 867 break; 868 } 869 } 870 871 if (!memac->allmulti_enabled) { 872 if (list_empty(&memac->multicast_addr_hash->lsts[hash])) 873 iowrite32be(hash & ~HASH_CTRL_MCAST_EN, 874 ®s->hashtable_ctrl); 875 } 876 877 return 0; 878 } 879 880 static int memac_set_exception(struct fman_mac *memac, 881 enum fman_mac_exceptions exception, bool enable) 882 { 883 u32 bit_mask = 0; 884 885 bit_mask = get_exception_flag(exception); 886 if (bit_mask) { 887 if (enable) 888 memac->exceptions |= bit_mask; 889 else 890 memac->exceptions &= ~bit_mask; 891 } else { 892 pr_err("Undefined exception\n"); 893 return -EINVAL; 894 } 895 set_exception(memac->regs, bit_mask, enable); 896 897 return 0; 898 } 899 900 static int memac_init(struct fman_mac *memac) 901 { 902 struct memac_cfg *memac_drv_param; 903 enet_addr_t eth_addr; 904 int err; 905 u32 reg32 = 0; 906 907 err = check_init_parameters(memac); 908 if (err) 909 return err; 910 911 memac_drv_param = memac->memac_drv_param; 912 913 /* First, reset the MAC if desired. */ 914 if (memac_drv_param->reset_on_init) { 915 err = reset(memac->regs); 916 if (err) { 917 pr_err("mEMAC reset failed\n"); 918 return err; 919 } 920 } 921 922 /* MAC Address */ 923 if (memac->addr != 0) { 924 MAKE_ENET_ADDR_FROM_UINT64(memac->addr, eth_addr); 925 add_addr_in_paddr(memac->regs, (const u8 *)eth_addr, 0); 926 } 927 928 init(memac->regs, memac->memac_drv_param, memac->exceptions); 929 930 /* FM_RX_FIFO_CORRUPT_ERRATA_10GMAC_A006320 errata workaround 931 * Exists only in FMan 6.0 and 6.3. 932 */ 933 if ((memac->fm_rev_info.major == 6) && 934 ((memac->fm_rev_info.minor == 0) || 935 (memac->fm_rev_info.minor == 3))) { 936 /* MAC strips CRC from received frames - this workaround 937 * should decrease the likelihood of bug appearance 938 */ 939 reg32 = ioread32be(&memac->regs->command_config); 940 reg32 &= ~CMD_CFG_CRC_FWD; 941 iowrite32be(reg32, &memac->regs->command_config); 942 } 943 944 /* Max Frame Length */ 945 err = fman_set_mac_max_frame(memac->fm, memac->mac_id, 946 memac_drv_param->max_frame_length); 947 if (err) { 948 pr_err("settings Mac max frame length is FAILED\n"); 949 return err; 950 } 951 952 memac->multicast_addr_hash = alloc_hash_table(HASH_TABLE_SIZE); 953 if (!memac->multicast_addr_hash) { 954 free_init_resources(memac); 955 pr_err("allocation hash table is FAILED\n"); 956 return -ENOMEM; 957 } 958 959 memac->unicast_addr_hash = alloc_hash_table(HASH_TABLE_SIZE); 960 if (!memac->unicast_addr_hash) { 961 free_init_resources(memac); 962 pr_err("allocation hash table is FAILED\n"); 963 return -ENOMEM; 964 } 965 966 fman_register_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 967 FMAN_INTR_TYPE_ERR, memac_err_exception, memac); 968 969 fman_register_intr(memac->fm, FMAN_MOD_MAC, memac->mac_id, 970 FMAN_INTR_TYPE_NORMAL, memac_exception, memac); 971 972 return 0; 973 } 974 975 static void pcs_put(struct phylink_pcs *pcs) 976 { 977 if (IS_ERR_OR_NULL(pcs)) 978 return; 979 980 lynx_pcs_destroy(pcs); 981 } 982 983 static int memac_free(struct fman_mac *memac) 984 { 985 free_init_resources(memac); 986 987 pcs_put(memac->sgmii_pcs); 988 pcs_put(memac->qsgmii_pcs); 989 pcs_put(memac->xfi_pcs); 990 kfree(memac->memac_drv_param); 991 kfree(memac); 992 993 return 0; 994 } 995 996 static struct fman_mac *memac_config(struct mac_device *mac_dev, 997 struct fman_mac_params *params) 998 { 999 struct fman_mac *memac; 1000 struct memac_cfg *memac_drv_param; 1001 1002 /* allocate memory for the m_emac data structure */ 1003 memac = kzalloc(sizeof(*memac), GFP_KERNEL); 1004 if (!memac) 1005 return NULL; 1006 1007 /* allocate memory for the m_emac driver parameters data structure */ 1008 memac_drv_param = kzalloc(sizeof(*memac_drv_param), GFP_KERNEL); 1009 if (!memac_drv_param) { 1010 memac_free(memac); 1011 return NULL; 1012 } 1013 1014 /* Plant parameter structure pointer */ 1015 memac->memac_drv_param = memac_drv_param; 1016 1017 set_dflts(memac_drv_param); 1018 1019 memac->addr = ENET_ADDR_TO_UINT64(mac_dev->addr); 1020 1021 memac->regs = mac_dev->vaddr; 1022 memac->mac_id = params->mac_id; 1023 memac->exceptions = (MEMAC_IMASK_TSECC_ER | MEMAC_IMASK_TECC_ER | 1024 MEMAC_IMASK_RECC_ER | MEMAC_IMASK_MGI); 1025 memac->exception_cb = params->exception_cb; 1026 memac->event_cb = params->event_cb; 1027 memac->dev_id = mac_dev; 1028 memac->fm = params->fm; 1029 1030 /* Save FMan revision */ 1031 fman_get_revision(memac->fm, &memac->fm_rev_info); 1032 1033 return memac; 1034 } 1035 1036 static struct phylink_pcs *memac_pcs_create(struct device_node *mac_node, 1037 int index) 1038 { 1039 struct device_node *node; 1040 struct phylink_pcs *pcs; 1041 1042 node = of_parse_phandle(mac_node, "pcsphy-handle", index); 1043 if (!node) 1044 return ERR_PTR(-ENODEV); 1045 1046 pcs = lynx_pcs_create_fwnode(of_fwnode_handle(node)); 1047 of_node_put(node); 1048 1049 return pcs; 1050 } 1051 1052 static bool memac_supports(struct mac_device *mac_dev, phy_interface_t iface) 1053 { 1054 /* If there's no serdes device, assume that it's been configured for 1055 * whatever the default interface mode is. 1056 */ 1057 if (!mac_dev->fman_mac->serdes) 1058 return mac_dev->phy_if == iface; 1059 /* Otherwise, ask the serdes */ 1060 return !phy_validate(mac_dev->fman_mac->serdes, PHY_MODE_ETHERNET, 1061 iface, NULL); 1062 } 1063 1064 int memac_initialization(struct mac_device *mac_dev, 1065 struct device_node *mac_node, 1066 struct fman_mac_params *params) 1067 { 1068 int err; 1069 struct device_node *fixed; 1070 struct phylink_pcs *pcs; 1071 struct fman_mac *memac; 1072 unsigned long capabilities; 1073 unsigned long *supported; 1074 1075 /* The internal connection to the serdes is XGMII, but this isn't 1076 * really correct for the phy mode (which is the external connection). 1077 * However, this is how all older device trees say that they want 1078 * 10GBASE-R (aka XFI), so just convert it for them. 1079 */ 1080 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII) 1081 mac_dev->phy_if = PHY_INTERFACE_MODE_10GBASER; 1082 1083 mac_dev->phylink_ops = &memac_mac_ops; 1084 mac_dev->set_promisc = memac_set_promiscuous; 1085 mac_dev->change_addr = memac_modify_mac_address; 1086 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address; 1087 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address; 1088 mac_dev->set_exception = memac_set_exception; 1089 mac_dev->set_allmulti = memac_set_allmulti; 1090 mac_dev->set_tstamp = memac_set_tstamp; 1091 mac_dev->set_multi = fman_set_multi; 1092 mac_dev->enable = memac_enable; 1093 mac_dev->disable = memac_disable; 1094 1095 mac_dev->fman_mac = memac_config(mac_dev, params); 1096 if (!mac_dev->fman_mac) 1097 return -EINVAL; 1098 1099 memac = mac_dev->fman_mac; 1100 memac->memac_drv_param->max_frame_length = fman_get_max_frm(); 1101 memac->memac_drv_param->reset_on_init = true; 1102 1103 err = of_property_match_string(mac_node, "pcs-handle-names", "xfi"); 1104 if (err >= 0) { 1105 memac->xfi_pcs = memac_pcs_create(mac_node, err); 1106 if (IS_ERR(memac->xfi_pcs)) { 1107 err = PTR_ERR(memac->xfi_pcs); 1108 dev_err_probe(mac_dev->dev, err, "missing xfi pcs\n"); 1109 goto _return_fm_mac_free; 1110 } 1111 } else if (err != -EINVAL && err != -ENODATA) { 1112 goto _return_fm_mac_free; 1113 } 1114 1115 err = of_property_match_string(mac_node, "pcs-handle-names", "qsgmii"); 1116 if (err >= 0) { 1117 memac->qsgmii_pcs = memac_pcs_create(mac_node, err); 1118 if (IS_ERR(memac->qsgmii_pcs)) { 1119 err = PTR_ERR(memac->qsgmii_pcs); 1120 dev_err_probe(mac_dev->dev, err, 1121 "missing qsgmii pcs\n"); 1122 goto _return_fm_mac_free; 1123 } 1124 } else if (err != -EINVAL && err != -ENODATA) { 1125 goto _return_fm_mac_free; 1126 } 1127 1128 /* For compatibility, if pcs-handle-names is missing, we assume this 1129 * phy is the first one in pcsphy-handle 1130 */ 1131 err = of_property_match_string(mac_node, "pcs-handle-names", "sgmii"); 1132 if (err == -EINVAL || err == -ENODATA) 1133 pcs = memac_pcs_create(mac_node, 0); 1134 else if (err < 0) 1135 goto _return_fm_mac_free; 1136 else 1137 pcs = memac_pcs_create(mac_node, err); 1138 1139 if (IS_ERR(pcs)) { 1140 err = PTR_ERR(pcs); 1141 dev_err_probe(mac_dev->dev, err, "missing pcs\n"); 1142 goto _return_fm_mac_free; 1143 } 1144 1145 /* If err is set here, it means that pcs-handle-names was missing above 1146 * (and therefore that xfi_pcs cannot be set). If we are defaulting to 1147 * XGMII, assume this is for XFI. Otherwise, assume it is for SGMII. 1148 */ 1149 if (err && mac_dev->phy_if == PHY_INTERFACE_MODE_10GBASER) 1150 memac->xfi_pcs = pcs; 1151 else 1152 memac->sgmii_pcs = pcs; 1153 1154 memac->serdes = devm_of_phy_optional_get(mac_dev->dev, mac_node, 1155 "serdes"); 1156 if (!memac->serdes) { 1157 dev_dbg(mac_dev->dev, "could not get (optional) serdes\n"); 1158 } else if (IS_ERR(memac->serdes)) { 1159 err = PTR_ERR(memac->serdes); 1160 goto _return_fm_mac_free; 1161 } 1162 1163 /* TODO: The following interface modes are supported by (some) hardware 1164 * but not by this driver: 1165 * - 1000BASE-KX 1166 * - 10GBASE-KR 1167 * - XAUI/HiGig 1168 */ 1169 supported = mac_dev->phylink_config.supported_interfaces; 1170 1171 /* Note that half duplex is only supported on 10/100M interfaces. */ 1172 1173 if (memac->sgmii_pcs && 1174 (memac_supports(mac_dev, PHY_INTERFACE_MODE_SGMII) || 1175 memac_supports(mac_dev, PHY_INTERFACE_MODE_1000BASEX))) { 1176 __set_bit(PHY_INTERFACE_MODE_SGMII, supported); 1177 __set_bit(PHY_INTERFACE_MODE_1000BASEX, supported); 1178 } 1179 1180 if (memac->sgmii_pcs && 1181 memac_supports(mac_dev, PHY_INTERFACE_MODE_2500BASEX)) 1182 __set_bit(PHY_INTERFACE_MODE_2500BASEX, supported); 1183 1184 if (memac->qsgmii_pcs && 1185 memac_supports(mac_dev, PHY_INTERFACE_MODE_QSGMII)) 1186 __set_bit(PHY_INTERFACE_MODE_QSGMII, supported); 1187 else if (mac_dev->phy_if == PHY_INTERFACE_MODE_QSGMII) 1188 dev_warn(mac_dev->dev, "no QSGMII pcs specified\n"); 1189 1190 if (memac->xfi_pcs && 1191 memac_supports(mac_dev, PHY_INTERFACE_MODE_10GBASER)) { 1192 __set_bit(PHY_INTERFACE_MODE_10GBASER, supported); 1193 } else { 1194 /* From what I can tell, no 10g macs support RGMII. */ 1195 phy_interface_set_rgmii(supported); 1196 __set_bit(PHY_INTERFACE_MODE_MII, supported); 1197 } 1198 1199 capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | MAC_10 | MAC_100; 1200 capabilities |= MAC_1000FD | MAC_2500FD | MAC_10000FD; 1201 1202 /* These SoCs don't support half duplex at all; there's no different 1203 * FMan version or compatible, so we just have to check the machine 1204 * compatible instead 1205 */ 1206 if (of_machine_is_compatible("fsl,ls1043a") || 1207 of_machine_is_compatible("fsl,ls1046a") || 1208 of_machine_is_compatible("fsl,B4QDS")) 1209 capabilities &= ~(MAC_10HD | MAC_100HD); 1210 1211 mac_dev->phylink_config.mac_capabilities = capabilities; 1212 1213 /* The T2080 and T4240 don't support half duplex RGMII. There is no 1214 * other way to identify these SoCs, so just use the machine 1215 * compatible. 1216 */ 1217 if (of_machine_is_compatible("fsl,T2080QDS") || 1218 of_machine_is_compatible("fsl,T2080RDB") || 1219 of_machine_is_compatible("fsl,T2081QDS") || 1220 of_machine_is_compatible("fsl,T4240QDS") || 1221 of_machine_is_compatible("fsl,T4240RDB")) 1222 memac->rgmii_no_half_duplex = true; 1223 1224 /* Most boards should use MLO_AN_INBAND, but existing boards don't have 1225 * a managed property. Default to MLO_AN_INBAND if nothing else is 1226 * specified. We need to be careful and not enable this if we have a 1227 * fixed link or if we are using MII or RGMII, since those 1228 * configurations modes don't use in-band autonegotiation. 1229 */ 1230 fixed = of_get_child_by_name(mac_node, "fixed-link"); 1231 if (!fixed && !of_property_read_bool(mac_node, "fixed-link") && 1232 !of_property_read_bool(mac_node, "managed") && 1233 mac_dev->phy_if != PHY_INTERFACE_MODE_MII && 1234 !phy_interface_mode_is_rgmii(mac_dev->phy_if)) 1235 mac_dev->phylink_config.ovr_an_inband = true; 1236 of_node_put(fixed); 1237 1238 err = memac_init(mac_dev->fman_mac); 1239 if (err < 0) 1240 goto _return_fm_mac_free; 1241 1242 dev_info(mac_dev->dev, "FMan MEMAC\n"); 1243 1244 return 0; 1245 1246 _return_fm_mac_free: 1247 memac_free(mac_dev->fman_mac); 1248 return err; 1249 } 1250