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sys/dev/altera/atse/if_atse.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012, 2013 Bjoern A. Zeeb 5 * Copyright (c) 2014 Robert N. M. Watson 6 * Copyright (c) 2016-2017 Ruslan Bukin <br@bsdpad.com> 7 * All rights reserved. 8 * 9 * This software was developed by SRI International and the University of 10 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-11-C-0249) 11 * ("MRC2"), as part of the DARPA MRC research programme. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 /* 35 * Altera Triple-Speed Ethernet MegaCore, Function User Guide 36 * UG-01008-3.0, Software Version: 12.0, June 2012. 37 * Available at the time of writing at: 38 * http://www.altera.com/literature/ug/ug_ethernet.pdf 39 * 40 * We are using an Marvell E1111 (Alaska) PHY on the DE4. See mii/e1000phy.c. 41 */ 42 /* 43 * XXX-BZ NOTES: 44 * - ifOutBroadcastPkts are only counted if both ether dst and src are all-1s; 45 * seems an IP core bug, they count ether broadcasts as multicast. Is this 46 * still the case? 47 * - figure out why the TX FIFO fill status and intr did not work as expected. 48 * - test 100Mbit/s and 10Mbit/s 49 * - blacklist the one special factory programmed ethernet address (for now 50 * hardcoded, later from loader?) 51 * - resolve all XXX, left as reminders to shake out details later 52 * - Jumbo frame support 53 */ 54 55 #include <sys/cdefs.h> 56 __FBSDID("$FreeBSD: releng/12.0/sys/dev/altera/atse/if_atse.c 333813 2018-05-18 20:13:34Z mmacy $"); 57 58 #include "opt_device_polling.h" 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/bus.h> 64 #include <sys/endian.h> 65 #include <sys/jail.h> 66 #include <sys/lock.h> 67 #include <sys/module.h> 68 #include <sys/mutex.h> 69 #include <sys/proc.h> 70 #include <sys/socket.h> 71 #include <sys/sockio.h> 72 #include <sys/types.h> 73 74 #include <net/ethernet.h> 75 #include <net/if.h> 76 #include <net/if_var.h> 77 #include <net/if_dl.h> 78 #include <net/if_media.h> 79 #include <net/if_types.h> 80 #include <net/if_vlan_var.h> 81 82 #include <net/bpf.h> 83 84 #include <machine/bus.h> 85 #include <machine/resource.h> 86 #include <sys/rman.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 91 #include <dev/altera/atse/if_atsereg.h> 92 #include <dev/xdma/xdma.h> 93 94 #define RX_QUEUE_SIZE 4096 95 #define TX_QUEUE_SIZE 4096 96 #define NUM_RX_MBUF 512 97 #define BUFRING_SIZE 8192 98 99 #include <machine/cache.h> 100 101 /* XXX once we'd do parallel attach, we need a global lock for this. */ 102 #define ATSE_ETHERNET_OPTION_BITS_UNDEF 0 103 #define ATSE_ETHERNET_OPTION_BITS_READ 1 104 static int atse_ethernet_option_bits_flag = ATSE_ETHERNET_OPTION_BITS_UNDEF; 105 static uint8_t atse_ethernet_option_bits[ALTERA_ETHERNET_OPTION_BITS_LEN]; 106 107 /* 108 * Softc and critical resource locking. 109 */ 110 #define ATSE_LOCK(_sc) mtx_lock(&(_sc)->atse_mtx) 111 #define ATSE_UNLOCK(_sc) mtx_unlock(&(_sc)->atse_mtx) 112 #define ATSE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->atse_mtx, MA_OWNED) 113 114 #define ATSE_DEBUG 115 #undef ATSE_DEBUG 116 117 #ifdef ATSE_DEBUG 118 #define DPRINTF(format, ...) printf(format, __VA_ARGS__) 119 #else 120 #define DPRINTF(format, ...) 121 #endif 122 123 /* 124 * Register space access macros. 125 */ 126 static inline void 127 csr_write_4(struct atse_softc *sc, uint32_t reg, uint32_t val4, 128 const char *f, const int l) 129 { 130 131 val4 = htole32(val4); 132 DPRINTF("[%s:%d] CSR W %s 0x%08x (0x%08x) = 0x%08x\n", f, l, 133 "atse_mem_res", reg, reg * 4, val4); 134 bus_write_4(sc->atse_mem_res, reg * 4, val4); 135 } 136 137 static inline uint32_t 138 csr_read_4(struct atse_softc *sc, uint32_t reg, const char *f, const int l) 139 { 140 uint32_t val4; 141 142 val4 = le32toh(bus_read_4(sc->atse_mem_res, reg * 4)); 143 DPRINTF("[%s:%d] CSR R %s 0x%08x (0x%08x) = 0x%08x\n", f, l, 144 "atse_mem_res", reg, reg * 4, val4); 145 146 return (val4); 147 } 148 149 /* 150 * See page 5-2 that it's all dword offsets and the MS 16 bits need to be zero 151 * on write and ignored on read. 152 */ 153 static inline void 154 pxx_write_2(struct atse_softc *sc, bus_addr_t bmcr, uint32_t reg, uint16_t val, 155 const char *f, const int l, const char *s) 156 { 157 uint32_t val4; 158 159 val4 = htole32(val & 0x0000ffff); 160 DPRINTF("[%s:%d] %s W %s 0x%08x (0x%08jx) = 0x%08x\n", f, l, s, 161 "atse_mem_res", reg, (bmcr + reg) * 4, val4); 162 bus_write_4(sc->atse_mem_res, (bmcr + reg) * 4, val4); 163 } 164 165 static inline uint16_t 166 pxx_read_2(struct atse_softc *sc, bus_addr_t bmcr, uint32_t reg, const char *f, 167 const int l, const char *s) 168 { 169 uint32_t val4; 170 uint16_t val; 171 172 val4 = bus_read_4(sc->atse_mem_res, (bmcr + reg) * 4); 173 val = le32toh(val4) & 0x0000ffff; 174 DPRINTF("[%s:%d] %s R %s 0x%08x (0x%08jx) = 0x%04x\n", f, l, s, 175 "atse_mem_res", reg, (bmcr + reg) * 4, val); 176 177 return (val); 178 } 179 180 #define CSR_WRITE_4(sc, reg, val) \ 181 csr_write_4((sc), (reg), (val), __func__, __LINE__) 182 #define CSR_READ_4(sc, reg) \ 183 csr_read_4((sc), (reg), __func__, __LINE__) 184 #define PCS_WRITE_2(sc, reg, val) \ 185 pxx_write_2((sc), sc->atse_bmcr0, (reg), (val), __func__, __LINE__, \ 186 "PCS") 187 #define PCS_READ_2(sc, reg) \ 188 pxx_read_2((sc), sc->atse_bmcr0, (reg), __func__, __LINE__, "PCS") 189 #define PHY_WRITE_2(sc, reg, val) \ 190 pxx_write_2((sc), sc->atse_bmcr1, (reg), (val), __func__, __LINE__, \ 191 "PHY") 192 #define PHY_READ_2(sc, reg) \ 193 pxx_read_2((sc), sc->atse_bmcr1, (reg), __func__, __LINE__, "PHY") 194 195 static void atse_tick(void *); 196 static int atse_detach(device_t); 197 198 devclass_t atse_devclass; 199 200 static int 201 atse_rx_enqueue(struct atse_softc *sc, uint32_t n) 202 { 203 struct mbuf *m; 204 int i; 205 206 for (i = 0; i < n; i++) { 207 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 208 if (m == NULL) { 209 device_printf(sc->dev, 210 "%s: Can't alloc rx mbuf\n", __func__); 211 return (-1); 212 } 213 214 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 215 xdma_enqueue_mbuf(sc->xchan_rx, &m, 0, 4, 4, XDMA_DEV_TO_MEM); 216 } 217 218 return (0); 219 } 220 221 static int 222 atse_xdma_tx_intr(void *arg, xdma_transfer_status_t *status) 223 { 224 xdma_transfer_status_t st; 225 struct atse_softc *sc; 226 struct ifnet *ifp; 227 struct mbuf *m; 228 int err; 229 230 sc = arg; 231 232 ATSE_LOCK(sc); 233 234 ifp = sc->atse_ifp; 235 236 for (;;) { 237 err = xdma_dequeue_mbuf(sc->xchan_tx, &m, &st); 238 if (err != 0) { 239 break; 240 } 241 242 if (st.error != 0) { 243 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 244 } 245 246 m_freem(m); 247 sc->txcount--; 248 } 249 250 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 251 252 ATSE_UNLOCK(sc); 253 254 return (0); 255 } 256 257 static int 258 atse_xdma_rx_intr(void *arg, xdma_transfer_status_t *status) 259 { 260 xdma_transfer_status_t st; 261 struct atse_softc *sc; 262 struct ifnet *ifp; 263 struct mbuf *m; 264 int err; 265 uint32_t cnt_processed; 266 267 sc = arg; 268 269 ATSE_LOCK(sc); 270 271 ifp = sc->atse_ifp; 272 273 cnt_processed = 0; 274 for (;;) { 275 err = xdma_dequeue_mbuf(sc->xchan_rx, &m, &st); 276 if (err != 0) { 277 break; 278 } 279 cnt_processed++; 280 281 if (st.error != 0) { 282 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 283 m_freem(m); 284 continue; 285 } 286 287 m->m_pkthdr.len = m->m_len = st.transferred; 288 m->m_pkthdr.rcvif = ifp; 289 m_adj(m, ETHER_ALIGN); 290 ATSE_UNLOCK(sc); 291 (*ifp->if_input)(ifp, m); 292 ATSE_LOCK(sc); 293 } 294 295 atse_rx_enqueue(sc, cnt_processed); 296 297 ATSE_UNLOCK(sc); 298 299 return (0); 300 } 301 302 static int 303 atse_transmit_locked(struct ifnet *ifp) 304 { 305 struct atse_softc *sc; 306 struct mbuf *m; 307 struct buf_ring *br; 308 int error; 309 int enq; 310 311 sc = ifp->if_softc; 312 br = sc->br; 313 314 enq = 0; 315 316 while ((m = drbr_peek(ifp, br)) != NULL) { 317 error = xdma_enqueue_mbuf(sc->xchan_tx, &m, 0, 4, 4, XDMA_MEM_TO_DEV); 318 if (error != 0) { 319 /* No space in request queue available yet. */ 320 drbr_putback(ifp, br, m); 321 break; 322 } 323 324 drbr_advance(ifp, br); 325 326 sc->txcount++; 327 enq++; 328 329 /* If anyone is interested give them a copy. */ 330 ETHER_BPF_MTAP(ifp, m); 331 } 332 333 if (enq > 0) 334 xdma_queue_submit(sc->xchan_tx); 335 336 return (0); 337 } 338 339 static int 340 atse_transmit(struct ifnet *ifp, struct mbuf *m) 341 { 342 struct atse_softc *sc; 343 struct buf_ring *br; 344 int error; 345 346 sc = ifp->if_softc; 347 br = sc->br; 348 349 ATSE_LOCK(sc); 350 351 mtx_lock(&sc->br_mtx); 352 353 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING) { 354 error = drbr_enqueue(ifp, sc->br, m); 355 mtx_unlock(&sc->br_mtx); 356 ATSE_UNLOCK(sc); 357 return (error); 358 } 359 360 if ((sc->atse_flags & ATSE_FLAGS_LINK) == 0) { 361 error = drbr_enqueue(ifp, sc->br, m); 362 mtx_unlock(&sc->br_mtx); 363 ATSE_UNLOCK(sc); 364 return (error); 365 } 366 367 error = drbr_enqueue(ifp, br, m); 368 if (error) { 369 mtx_unlock(&sc->br_mtx); 370 ATSE_UNLOCK(sc); 371 return (error); 372 } 373 error = atse_transmit_locked(ifp); 374 375 mtx_unlock(&sc->br_mtx); 376 ATSE_UNLOCK(sc); 377 378 return (error); 379 } 380 381 static void 382 atse_qflush(struct ifnet *ifp) 383 { 384 struct atse_softc *sc; 385 386 sc = ifp->if_softc; 387 388 printf("%s\n", __func__); 389 } 390 391 static int 392 atse_stop_locked(struct atse_softc *sc) 393 { 394 uint32_t mask, val4; 395 struct ifnet *ifp; 396 int i; 397 398 ATSE_LOCK_ASSERT(sc); 399 400 callout_stop(&sc->atse_tick); 401 402 ifp = sc->atse_ifp; 403 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 404 405 /* Disable MAC transmit and receive datapath. */ 406 mask = BASE_CFG_COMMAND_CONFIG_TX_ENA|BASE_CFG_COMMAND_CONFIG_RX_ENA; 407 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 408 val4 &= ~mask; 409 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 410 411 /* Wait for bits to be cleared; i=100 is excessive. */ 412 for (i = 0; i < 100; i++) { 413 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 414 if ((val4 & mask) == 0) { 415 break; 416 } 417 DELAY(10); 418 } 419 420 if ((val4 & mask) != 0) { 421 device_printf(sc->atse_dev, "Disabling MAC TX/RX timed out.\n"); 422 /* Punt. */ 423 } 424 425 sc->atse_flags &= ~ATSE_FLAGS_LINK; 426 427 return (0); 428 } 429 430 static uint8_t 431 atse_mchash(struct atse_softc *sc __unused, const uint8_t *addr) 432 { 433 uint8_t x, y; 434 int i, j; 435 436 x = 0; 437 for (i = 0; i < ETHER_ADDR_LEN; i++) { 438 y = addr[i] & 0x01; 439 for (j = 1; j < 8; j++) 440 y ^= (addr[i] >> j) & 0x01; 441 x |= (y << i); 442 } 443 444 return (x); 445 } 446 447 static int 448 atse_rxfilter_locked(struct atse_softc *sc) 449 { 450 struct ifmultiaddr *ifma; 451 struct ifnet *ifp; 452 uint32_t val4; 453 int i; 454 455 /* XXX-BZ can we find out if we have the MHASH synthesized? */ 456 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 457 /* For simplicity always hash full 48 bits of addresses. */ 458 if ((val4 & BASE_CFG_COMMAND_CONFIG_MHASH_SEL) != 0) 459 val4 &= ~BASE_CFG_COMMAND_CONFIG_MHASH_SEL; 460 461 ifp = sc->atse_ifp; 462 if (ifp->if_flags & IFF_PROMISC) { 463 val4 |= BASE_CFG_COMMAND_CONFIG_PROMIS_EN; 464 } else { 465 val4 &= ~BASE_CFG_COMMAND_CONFIG_PROMIS_EN; 466 } 467 468 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 469 470 if (ifp->if_flags & IFF_ALLMULTI) { 471 /* Accept all multicast addresses. */ 472 for (i = 0; i <= MHASH_LEN; i++) 473 CSR_WRITE_4(sc, MHASH_START + i, 0x1); 474 } else { 475 /* 476 * Can hold MHASH_LEN entries. 477 * XXX-BZ bitstring.h would be more general. 478 */ 479 uint64_t h; 480 481 h = 0; 482 /* 483 * Re-build and re-program hash table. First build the 484 * bit-field "yes" or "no" for each slot per address, then 485 * do all the programming afterwards. 486 */ 487 if_maddr_rlock(ifp); 488 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 489 if (ifma->ifma_addr->sa_family != AF_LINK) { 490 continue; 491 } 492 493 h |= (1 << atse_mchash(sc, 494 LLADDR((struct sockaddr_dl *)ifma->ifma_addr))); 495 } 496 if_maddr_runlock(ifp); 497 for (i = 0; i <= MHASH_LEN; i++) { 498 CSR_WRITE_4(sc, MHASH_START + i, 499 (h & (1 << i)) ? 0x01 : 0x00); 500 } 501 } 502 503 return (0); 504 } 505 506 static int 507 atse_ethernet_option_bits_read_fdt(device_t dev) 508 { 509 struct resource *res; 510 device_t fdev; 511 int i, rid; 512 513 if (atse_ethernet_option_bits_flag & ATSE_ETHERNET_OPTION_BITS_READ) { 514 return (0); 515 } 516 517 fdev = device_find_child(device_get_parent(dev), "cfi", 0); 518 if (fdev == NULL) { 519 return (ENOENT); 520 } 521 522 rid = 0; 523 res = bus_alloc_resource_any(fdev, SYS_RES_MEMORY, &rid, 524 RF_ACTIVE | RF_SHAREABLE); 525 if (res == NULL) { 526 return (ENXIO); 527 } 528 529 for (i = 0; i < ALTERA_ETHERNET_OPTION_BITS_LEN; i++) { 530 atse_ethernet_option_bits[i] = bus_read_1(res, 531 ALTERA_ETHERNET_OPTION_BITS_OFF + i); 532 } 533 534 bus_release_resource(fdev, SYS_RES_MEMORY, rid, res); 535 atse_ethernet_option_bits_flag |= ATSE_ETHERNET_OPTION_BITS_READ; 536 537 return (0); 538 } 539 540 static int 541 atse_ethernet_option_bits_read(device_t dev) 542 { 543 int error; 544 545 error = atse_ethernet_option_bits_read_fdt(dev); 546 if (error == 0) 547 return (0); 548 549 device_printf(dev, "Cannot read Ethernet addresses from flash.\n"); 550 551 return (error); 552 } 553 554 static int 555 atse_get_eth_address(struct atse_softc *sc) 556 { 557 unsigned long hostid; 558 uint32_t val4; 559 int unit; 560 561 /* 562 * Make sure to only ever do this once. Otherwise a reset would 563 * possibly change our ethernet address, which is not good at all. 564 */ 565 if (sc->atse_eth_addr[0] != 0x00 || sc->atse_eth_addr[1] != 0x00 || 566 sc->atse_eth_addr[2] != 0x00) { 567 return (0); 568 } 569 570 if ((atse_ethernet_option_bits_flag & 571 ATSE_ETHERNET_OPTION_BITS_READ) == 0) { 572 goto get_random; 573 } 574 575 val4 = atse_ethernet_option_bits[0] << 24; 576 val4 |= atse_ethernet_option_bits[1] << 16; 577 val4 |= atse_ethernet_option_bits[2] << 8; 578 val4 |= atse_ethernet_option_bits[3]; 579 /* They chose "safe". */ 580 if (val4 != le32toh(0x00005afe)) { 581 device_printf(sc->atse_dev, "Magic '5afe' is not safe: 0x%08x. " 582 "Falling back to random numbers for hardware address.\n", 583 val4); 584 goto get_random; 585 } 586 587 sc->atse_eth_addr[0] = atse_ethernet_option_bits[4]; 588 sc->atse_eth_addr[1] = atse_ethernet_option_bits[5]; 589 sc->atse_eth_addr[2] = atse_ethernet_option_bits[6]; 590 sc->atse_eth_addr[3] = atse_ethernet_option_bits[7]; 591 sc->atse_eth_addr[4] = atse_ethernet_option_bits[8]; 592 sc->atse_eth_addr[5] = atse_ethernet_option_bits[9]; 593 594 /* Handle factory default ethernet addresss: 00:07:ed:ff:ed:15 */ 595 if (sc->atse_eth_addr[0] == 0x00 && sc->atse_eth_addr[1] == 0x07 && 596 sc->atse_eth_addr[2] == 0xed && sc->atse_eth_addr[3] == 0xff && 597 sc->atse_eth_addr[4] == 0xed && sc->atse_eth_addr[5] == 0x15) { 598 599 device_printf(sc->atse_dev, "Factory programmed Ethernet " 600 "hardware address blacklisted. Falling back to random " 601 "address to avoid collisions.\n"); 602 device_printf(sc->atse_dev, "Please re-program your flash.\n"); 603 goto get_random; 604 } 605 606 if (sc->atse_eth_addr[0] == 0x00 && sc->atse_eth_addr[1] == 0x00 && 607 sc->atse_eth_addr[2] == 0x00 && sc->atse_eth_addr[3] == 0x00 && 608 sc->atse_eth_addr[4] == 0x00 && sc->atse_eth_addr[5] == 0x00) { 609 device_printf(sc->atse_dev, "All zero's Ethernet hardware " 610 "address blacklisted. Falling back to random address.\n"); 611 device_printf(sc->atse_dev, "Please re-program your flash.\n"); 612 goto get_random; 613 } 614 615 if (ETHER_IS_MULTICAST(sc->atse_eth_addr)) { 616 device_printf(sc->atse_dev, "Multicast Ethernet hardware " 617 "address blacklisted. Falling back to random address.\n"); 618 device_printf(sc->atse_dev, "Please re-program your flash.\n"); 619 goto get_random; 620 } 621 622 /* 623 * If we find an Altera prefixed address with a 0x0 ending 624 * adjust by device unit. If not and this is not the first 625 * Ethernet, go to random. 626 */ 627 unit = device_get_unit(sc->atse_dev); 628 if (unit == 0x00) { 629 return (0); 630 } 631 632 if (unit > 0x0f) { 633 device_printf(sc->atse_dev, "We do not support Ethernet " 634 "addresses for more than 16 MACs. Falling back to " 635 "random hadware address.\n"); 636 goto get_random; 637 } 638 if ((sc->atse_eth_addr[0] & ~0x2) != 0 || 639 sc->atse_eth_addr[1] != 0x07 || sc->atse_eth_addr[2] != 0xed || 640 (sc->atse_eth_addr[5] & 0x0f) != 0x0) { 641 device_printf(sc->atse_dev, "Ethernet address not meeting our " 642 "multi-MAC standards. Falling back to random hadware " 643 "address.\n"); 644 goto get_random; 645 } 646 sc->atse_eth_addr[5] |= (unit & 0x0f); 647 648 return (0); 649 650 get_random: 651 /* 652 * Fall back to random code we also use on bridge(4). 653 */ 654 getcredhostid(curthread->td_ucred, &hostid); 655 if (hostid == 0) { 656 arc4rand(sc->atse_eth_addr, ETHER_ADDR_LEN, 1); 657 sc->atse_eth_addr[0] &= ~1;/* clear multicast bit */ 658 sc->atse_eth_addr[0] |= 2; /* set the LAA bit */ 659 } else { 660 sc->atse_eth_addr[0] = 0x2; 661 sc->atse_eth_addr[1] = (hostid >> 24) & 0xff; 662 sc->atse_eth_addr[2] = (hostid >> 16) & 0xff; 663 sc->atse_eth_addr[3] = (hostid >> 8 ) & 0xff; 664 sc->atse_eth_addr[4] = hostid & 0xff; 665 sc->atse_eth_addr[5] = sc->atse_unit & 0xff; 666 } 667 668 return (0); 669 } 670 671 static int 672 atse_set_eth_address(struct atse_softc *sc, int n) 673 { 674 uint32_t v0, v1; 675 676 v0 = (sc->atse_eth_addr[3] << 24) | (sc->atse_eth_addr[2] << 16) | 677 (sc->atse_eth_addr[1] << 8) | sc->atse_eth_addr[0]; 678 v1 = (sc->atse_eth_addr[5] << 8) | sc->atse_eth_addr[4]; 679 680 if (n & ATSE_ETH_ADDR_DEF) { 681 CSR_WRITE_4(sc, BASE_CFG_MAC_0, v0); 682 CSR_WRITE_4(sc, BASE_CFG_MAC_1, v1); 683 } 684 if (n & ATSE_ETH_ADDR_SUPP1) { 685 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_0_0, v0); 686 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_0_1, v1); 687 } 688 if (n & ATSE_ETH_ADDR_SUPP2) { 689 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_1_0, v0); 690 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_1_1, v1); 691 } 692 if (n & ATSE_ETH_ADDR_SUPP3) { 693 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_2_0, v0); 694 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_2_1, v1); 695 } 696 if (n & ATSE_ETH_ADDR_SUPP4) { 697 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_3_0, v0); 698 CSR_WRITE_4(sc, SUPPL_ADDR_SMAC_3_1, v1); 699 } 700 701 return (0); 702 } 703 704 static int 705 atse_reset(struct atse_softc *sc) 706 { 707 uint32_t val4, mask; 708 uint16_t val; 709 int i; 710 711 /* 1. External PHY Initialization using MDIO. */ 712 /* 713 * We select the right MDIO space in atse_attach() and let MII do 714 * anything else. 715 */ 716 717 /* 2. PCS Configuration Register Initialization. */ 718 /* a. Set auto negotiation link timer to 1.6ms for SGMII. */ 719 PCS_WRITE_2(sc, PCS_EXT_LINK_TIMER_0, 0x0D40); 720 PCS_WRITE_2(sc, PCS_EXT_LINK_TIMER_1, 0x0003); 721 722 /* b. Configure SGMII. */ 723 val = PCS_EXT_IF_MODE_SGMII_ENA|PCS_EXT_IF_MODE_USE_SGMII_AN; 724 PCS_WRITE_2(sc, PCS_EXT_IF_MODE, val); 725 726 /* c. Enable auto negotiation. */ 727 /* Ignore Bits 6,8,13; should be set,set,unset. */ 728 val = PCS_READ_2(sc, PCS_CONTROL); 729 val &= ~(PCS_CONTROL_ISOLATE|PCS_CONTROL_POWERDOWN); 730 val &= ~PCS_CONTROL_LOOPBACK; /* Make this a -link1 option? */ 731 val |= PCS_CONTROL_AUTO_NEGOTIATION_ENABLE; 732 PCS_WRITE_2(sc, PCS_CONTROL, val); 733 734 /* d. PCS reset. */ 735 val = PCS_READ_2(sc, PCS_CONTROL); 736 val |= PCS_CONTROL_RESET; 737 PCS_WRITE_2(sc, PCS_CONTROL, val); 738 739 /* Wait for reset bit to clear; i=100 is excessive. */ 740 for (i = 0; i < 100; i++) { 741 val = PCS_READ_2(sc, PCS_CONTROL); 742 if ((val & PCS_CONTROL_RESET) == 0) { 743 break; 744 } 745 DELAY(10); 746 } 747 748 if ((val & PCS_CONTROL_RESET) != 0) { 749 device_printf(sc->atse_dev, "PCS reset timed out.\n"); 750 return (ENXIO); 751 } 752 753 /* 3. MAC Configuration Register Initialization. */ 754 /* a. Disable MAC transmit and receive datapath. */ 755 mask = BASE_CFG_COMMAND_CONFIG_TX_ENA|BASE_CFG_COMMAND_CONFIG_RX_ENA; 756 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 757 val4 &= ~mask; 758 /* Samples in the manual do have the SW_RESET bit set here, why? */ 759 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 760 /* Wait for bits to be cleared; i=100 is excessive. */ 761 for (i = 0; i < 100; i++) { 762 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 763 if ((val4 & mask) == 0) { 764 break; 765 } 766 DELAY(10); 767 } 768 if ((val4 & mask) != 0) { 769 device_printf(sc->atse_dev, "Disabling MAC TX/RX timed out.\n"); 770 return (ENXIO); 771 } 772 /* b. MAC FIFO configuration. */ 773 CSR_WRITE_4(sc, BASE_CFG_TX_SECTION_EMPTY, FIFO_DEPTH_TX - 16); 774 CSR_WRITE_4(sc, BASE_CFG_TX_ALMOST_FULL, 3); 775 CSR_WRITE_4(sc, BASE_CFG_TX_ALMOST_EMPTY, 8); 776 CSR_WRITE_4(sc, BASE_CFG_RX_SECTION_EMPTY, FIFO_DEPTH_RX - 16); 777 CSR_WRITE_4(sc, BASE_CFG_RX_ALMOST_FULL, 8); 778 CSR_WRITE_4(sc, BASE_CFG_RX_ALMOST_EMPTY, 8); 779 #if 0 780 CSR_WRITE_4(sc, BASE_CFG_TX_SECTION_FULL, 16); 781 CSR_WRITE_4(sc, BASE_CFG_RX_SECTION_FULL, 16); 782 #else 783 /* For store-and-forward mode, set this threshold to 0. */ 784 CSR_WRITE_4(sc, BASE_CFG_TX_SECTION_FULL, 0); 785 CSR_WRITE_4(sc, BASE_CFG_RX_SECTION_FULL, 0); 786 #endif 787 /* c. MAC address configuration. */ 788 /* Also intialize supplementary addresses to our primary one. */ 789 /* XXX-BZ FreeBSD really needs to grow and API for using these. */ 790 atse_get_eth_address(sc); 791 atse_set_eth_address(sc, ATSE_ETH_ADDR_ALL); 792 793 /* d. MAC function configuration. */ 794 CSR_WRITE_4(sc, BASE_CFG_FRM_LENGTH, 1518); /* Default. */ 795 CSR_WRITE_4(sc, BASE_CFG_TX_IPG_LENGTH, 12); 796 CSR_WRITE_4(sc, BASE_CFG_PAUSE_QUANT, 0xFFFF); 797 798 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 799 /* 800 * If 1000BASE-X/SGMII PCS is initialized, set the ETH_SPEED (bit 3) 801 * and ENA_10 (bit 25) in command_config register to 0. If half duplex 802 * is reported in the PHY/PCS status register, set the HD_ENA (bit 10) 803 * to 1 in command_config register. 804 * BZ: We shoot for 1000 instead. 805 */ 806 #if 0 807 val4 |= BASE_CFG_COMMAND_CONFIG_ETH_SPEED; 808 #else 809 val4 &= ~BASE_CFG_COMMAND_CONFIG_ETH_SPEED; 810 #endif 811 val4 &= ~BASE_CFG_COMMAND_CONFIG_ENA_10; 812 #if 0 813 /* 814 * We do not want to set this, otherwise, we could not even send 815 * random raw ethernet frames for various other research. By default 816 * FreeBSD will use the right ether source address. 817 */ 818 val4 |= BASE_CFG_COMMAND_CONFIG_TX_ADDR_INS; 819 #endif 820 val4 |= BASE_CFG_COMMAND_CONFIG_PAD_EN; 821 val4 &= ~BASE_CFG_COMMAND_CONFIG_CRC_FWD; 822 #if 0 823 val4 |= BASE_CFG_COMMAND_CONFIG_CNTL_FRM_ENA; 824 #endif 825 #if 1 826 val4 |= BASE_CFG_COMMAND_CONFIG_RX_ERR_DISC; 827 #endif 828 val &= ~BASE_CFG_COMMAND_CONFIG_LOOP_ENA; /* link0? */ 829 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 830 831 /* 832 * Make sure we do not enable 32bit alignment; FreeBSD cannot 833 * cope with the additional padding (though we should!?). 834 * Also make sure we get the CRC appended. 835 */ 836 val4 = CSR_READ_4(sc, TX_CMD_STAT); 837 val4 &= ~(TX_CMD_STAT_OMIT_CRC|TX_CMD_STAT_TX_SHIFT16); 838 CSR_WRITE_4(sc, TX_CMD_STAT, val4); 839 840 val4 = CSR_READ_4(sc, RX_CMD_STAT); 841 val4 &= ~RX_CMD_STAT_RX_SHIFT16; 842 val4 |= RX_CMD_STAT_RX_SHIFT16; 843 CSR_WRITE_4(sc, RX_CMD_STAT, val4); 844 845 /* e. Reset MAC. */ 846 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 847 val4 |= BASE_CFG_COMMAND_CONFIG_SW_RESET; 848 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 849 /* Wait for bits to be cleared; i=100 is excessive. */ 850 for (i = 0; i < 100; i++) { 851 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 852 if ((val4 & BASE_CFG_COMMAND_CONFIG_SW_RESET) == 0) { 853 break; 854 } 855 DELAY(10); 856 } 857 if ((val4 & BASE_CFG_COMMAND_CONFIG_SW_RESET) != 0) { 858 device_printf(sc->atse_dev, "MAC reset timed out.\n"); 859 return (ENXIO); 860 } 861 862 /* f. Enable MAC transmit and receive datapath. */ 863 mask = BASE_CFG_COMMAND_CONFIG_TX_ENA|BASE_CFG_COMMAND_CONFIG_RX_ENA; 864 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 865 val4 |= mask; 866 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 867 /* Wait for bits to be cleared; i=100 is excessive. */ 868 for (i = 0; i < 100; i++) { 869 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 870 if ((val4 & mask) == mask) { 871 break; 872 } 873 DELAY(10); 874 } 875 if ((val4 & mask) != mask) { 876 device_printf(sc->atse_dev, "Enabling MAC TX/RX timed out.\n"); 877 return (ENXIO); 878 } 879 880 return (0); 881 } 882 883 static void 884 atse_init_locked(struct atse_softc *sc) 885 { 886 struct ifnet *ifp; 887 struct mii_data *mii; 888 uint8_t *eaddr; 889 890 ATSE_LOCK_ASSERT(sc); 891 ifp = sc->atse_ifp; 892 893 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 894 return; 895 } 896 897 /* 898 * Must update the ether address if changed. Given we do not handle 899 * in atse_ioctl() but it's in the general framework, just always 900 * do it here before atse_reset(). 901 */ 902 eaddr = IF_LLADDR(sc->atse_ifp); 903 bcopy(eaddr, &sc->atse_eth_addr, ETHER_ADDR_LEN); 904 905 /* Make things frind to halt, cleanup, ... */ 906 atse_stop_locked(sc); 907 908 atse_reset(sc); 909 910 /* ... and fire up the engine again. */ 911 atse_rxfilter_locked(sc); 912 913 sc->atse_flags &= ATSE_FLAGS_LINK; /* Preserve. */ 914 915 mii = device_get_softc(sc->atse_miibus); 916 917 sc->atse_flags &= ~ATSE_FLAGS_LINK; 918 mii_mediachg(mii); 919 920 ifp->if_drv_flags |= IFF_DRV_RUNNING; 921 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 922 923 callout_reset(&sc->atse_tick, hz, atse_tick, sc); 924 } 925 926 static void 927 atse_init(void *xsc) 928 { 929 struct atse_softc *sc; 930 931 /* 932 * XXXRW: There is some argument that we should immediately do RX 933 * processing after enabling interrupts, or one may not fire if there 934 * are buffered packets. 935 */ 936 sc = (struct atse_softc *)xsc; 937 ATSE_LOCK(sc); 938 atse_init_locked(sc); 939 ATSE_UNLOCK(sc); 940 } 941 942 static int 943 atse_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 944 { 945 struct atse_softc *sc; 946 struct ifreq *ifr; 947 int error, mask; 948 949 error = 0; 950 sc = ifp->if_softc; 951 ifr = (struct ifreq *)data; 952 953 switch (command) { 954 case SIOCSIFFLAGS: 955 ATSE_LOCK(sc); 956 if (ifp->if_flags & IFF_UP) { 957 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 && 958 ((ifp->if_flags ^ sc->atse_if_flags) & 959 (IFF_PROMISC | IFF_ALLMULTI)) != 0) 960 atse_rxfilter_locked(sc); 961 else 962 atse_init_locked(sc); 963 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 964 atse_stop_locked(sc); 965 sc->atse_if_flags = ifp->if_flags; 966 ATSE_UNLOCK(sc); 967 break; 968 case SIOCSIFCAP: 969 ATSE_LOCK(sc); 970 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 971 ATSE_UNLOCK(sc); 972 break; 973 case SIOCADDMULTI: 974 case SIOCDELMULTI: 975 ATSE_LOCK(sc); 976 atse_rxfilter_locked(sc); 977 ATSE_UNLOCK(sc); 978 break; 979 case SIOCGIFMEDIA: 980 case SIOCSIFMEDIA: 981 { 982 struct mii_data *mii; 983 struct ifreq *ifr; 984 985 mii = device_get_softc(sc->atse_miibus); 986 ifr = (struct ifreq *)data; 987 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 988 break; 989 } 990 default: 991 error = ether_ioctl(ifp, command, data); 992 break; 993 } 994 995 return (error); 996 } 997 998 static void 999 atse_tick(void *xsc) 1000 { 1001 struct atse_softc *sc; 1002 struct mii_data *mii; 1003 struct ifnet *ifp; 1004 1005 sc = (struct atse_softc *)xsc; 1006 ATSE_LOCK_ASSERT(sc); 1007 ifp = sc->atse_ifp; 1008 1009 mii = device_get_softc(sc->atse_miibus); 1010 mii_tick(mii); 1011 if ((sc->atse_flags & ATSE_FLAGS_LINK) == 0) { 1012 atse_miibus_statchg(sc->atse_dev); 1013 } 1014 1015 callout_reset(&sc->atse_tick, hz, atse_tick, sc); 1016 } 1017 1018 /* 1019 * Set media options. 1020 */ 1021 static int 1022 atse_ifmedia_upd(struct ifnet *ifp) 1023 { 1024 struct atse_softc *sc; 1025 struct mii_data *mii; 1026 struct mii_softc *miisc; 1027 int error; 1028 1029 sc = ifp->if_softc; 1030 1031 ATSE_LOCK(sc); 1032 mii = device_get_softc(sc->atse_miibus); 1033 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) { 1034 PHY_RESET(miisc); 1035 } 1036 error = mii_mediachg(mii); 1037 ATSE_UNLOCK(sc); 1038 1039 return (error); 1040 } 1041 1042 /* 1043 * Report current media status. 1044 */ 1045 static void 1046 atse_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1047 { 1048 struct atse_softc *sc; 1049 struct mii_data *mii; 1050 1051 sc = ifp->if_softc; 1052 1053 ATSE_LOCK(sc); 1054 mii = device_get_softc(sc->atse_miibus); 1055 mii_pollstat(mii); 1056 ifmr->ifm_active = mii->mii_media_active; 1057 ifmr->ifm_status = mii->mii_media_status; 1058 ATSE_UNLOCK(sc); 1059 } 1060 1061 static struct atse_mac_stats_regs { 1062 const char *name; 1063 const char *descr; /* Mostly copied from Altera datasheet. */ 1064 } atse_mac_stats_regs[] = { 1065 [0x1a] = 1066 { "aFramesTransmittedOK", 1067 "The number of frames that are successfully transmitted including " 1068 "the pause frames." }, 1069 { "aFramesReceivedOK", 1070 "The number of frames that are successfully received including the " 1071 "pause frames." }, 1072 { "aFrameCheckSequenceErrors", 1073 "The number of receive frames with CRC error." }, 1074 { "aAlignmentErrors", 1075 "The number of receive frames with alignment error." }, 1076 { "aOctetsTransmittedOK", 1077 "The lower 32 bits of the number of data and padding octets that " 1078 "are successfully transmitted." }, 1079 { "aOctetsReceivedOK", 1080 "The lower 32 bits of the number of data and padding octets that " 1081 " are successfully received." }, 1082 { "aTxPAUSEMACCtrlFrames", 1083 "The number of pause frames transmitted." }, 1084 { "aRxPAUSEMACCtrlFrames", 1085 "The number received pause frames received." }, 1086 { "ifInErrors", 1087 "The number of errored frames received." }, 1088 { "ifOutErrors", 1089 "The number of transmit frames with either a FIFO overflow error, " 1090 "a FIFO underflow error, or a error defined by the user " 1091 "application." }, 1092 { "ifInUcastPkts", 1093 "The number of valid unicast frames received." }, 1094 { "ifInMulticastPkts", 1095 "The number of valid multicast frames received. The count does " 1096 "not include pause frames." }, 1097 { "ifInBroadcastPkts", 1098 "The number of valid broadcast frames received." }, 1099 { "ifOutDiscards", 1100 "This statistics counter is not in use. The MAC function does not " 1101 "discard frames that are written to the FIFO buffer by the user " 1102 "application." }, 1103 { "ifOutUcastPkts", 1104 "The number of valid unicast frames transmitted." }, 1105 { "ifOutMulticastPkts", 1106 "The number of valid multicast frames transmitted, excluding pause " 1107 "frames." }, 1108 { "ifOutBroadcastPkts", 1109 "The number of valid broadcast frames transmitted." }, 1110 { "etherStatsDropEvents", 1111 "The number of frames that are dropped due to MAC internal errors " 1112 "when FIFO buffer overflow persists." }, 1113 { "etherStatsOctets", 1114 "The lower 32 bits of the total number of octets received. This " 1115 "count includes both good and errored frames." }, 1116 { "etherStatsPkts", 1117 "The total number of good and errored frames received." }, 1118 { "etherStatsUndersizePkts", 1119 "The number of frames received with length less than 64 bytes. " 1120 "This count does not include errored frames." }, 1121 { "etherStatsOversizePkts", 1122 "The number of frames received that are longer than the value " 1123 "configured in the frm_length register. This count does not " 1124 "include errored frames." }, 1125 { "etherStatsPkts64Octets", 1126 "The number of 64-byte frames received. This count includes good " 1127 "and errored frames." }, 1128 { "etherStatsPkts65to127Octets", 1129 "The number of received good and errored frames between the length " 1130 "of 65 and 127 bytes." }, 1131 { "etherStatsPkts128to255Octets", 1132 "The number of received good and errored frames between the length " 1133 "of 128 and 255 bytes." }, 1134 { "etherStatsPkts256to511Octets", 1135 "The number of received good and errored frames between the length " 1136 "of 256 and 511 bytes." }, 1137 { "etherStatsPkts512to1023Octets", 1138 "The number of received good and errored frames between the length " 1139 "of 512 and 1023 bytes." }, 1140 { "etherStatsPkts1024to1518Octets", 1141 "The number of received good and errored frames between the length " 1142 "of 1024 and 1518 bytes." }, 1143 { "etherStatsPkts1519toXOctets", 1144 "The number of received good and errored frames between the length " 1145 "of 1519 and the maximum frame length configured in the frm_length " 1146 "register." }, 1147 { "etherStatsJabbers", 1148 "Too long frames with CRC error." }, 1149 { "etherStatsFragments", 1150 "Too short frames with CRC error." }, 1151 /* 0x39 unused, 0x3a/b non-stats. */ 1152 [0x3c] = 1153 /* Extended Statistics Counters */ 1154 { "msb_aOctetsTransmittedOK", 1155 "Upper 32 bits of the number of data and padding octets that are " 1156 "successfully transmitted." }, 1157 { "msb_aOctetsReceivedOK", 1158 "Upper 32 bits of the number of data and padding octets that are " 1159 "successfully received." }, 1160 { "msb_etherStatsOctets", 1161 "Upper 32 bits of the total number of octets received. This count " 1162 "includes both good and errored frames." } 1163 }; 1164 1165 static int 1166 sysctl_atse_mac_stats_proc(SYSCTL_HANDLER_ARGS) 1167 { 1168 struct atse_softc *sc; 1169 int error, offset, s; 1170 1171 sc = arg1; 1172 offset = arg2; 1173 1174 s = CSR_READ_4(sc, offset); 1175 error = sysctl_handle_int(oidp, &s, 0, req); 1176 if (error || !req->newptr) { 1177 return (error); 1178 } 1179 1180 return (0); 1181 } 1182 1183 static struct atse_rx_err_stats_regs { 1184 const char *name; 1185 const char *descr; 1186 } atse_rx_err_stats_regs[] = { 1187 1188 #define ATSE_RX_ERR_FIFO_THRES_EOP 0 /* FIFO threshold reached, on EOP. */ 1189 #define ATSE_RX_ERR_ELEN 1 /* Frame/payload length not valid. */ 1190 #define ATSE_RX_ERR_CRC32 2 /* CRC-32 error. */ 1191 #define ATSE_RX_ERR_FIFO_THRES_TRUNC 3 /* FIFO thresh., truncated frame. */ 1192 #define ATSE_RX_ERR_4 4 /* ? */ 1193 #define ATSE_RX_ERR_5 5 /* / */ 1194 1195 { "rx_err_fifo_thres_eop", 1196 "FIFO threshold reached, reported on EOP." }, 1197 { "rx_err_fifo_elen", 1198 "Frame or payload length not valid." }, 1199 { "rx_err_fifo_crc32", 1200 "CRC-32 error." }, 1201 { "rx_err_fifo_thres_trunc", 1202 "FIFO threshold reached, truncated frame" }, 1203 { "rx_err_4", 1204 "?" }, 1205 { "rx_err_5", 1206 "?" }, 1207 }; 1208 1209 static int 1210 sysctl_atse_rx_err_stats_proc(SYSCTL_HANDLER_ARGS) 1211 { 1212 struct atse_softc *sc; 1213 int error, offset, s; 1214 1215 sc = arg1; 1216 offset = arg2; 1217 1218 s = sc->atse_rx_err[offset]; 1219 error = sysctl_handle_int(oidp, &s, 0, req); 1220 if (error || !req->newptr) { 1221 return (error); 1222 } 1223 1224 return (0); 1225 } 1226 1227 static void 1228 atse_sysctl_stats_attach(device_t dev) 1229 { 1230 struct sysctl_ctx_list *sctx; 1231 struct sysctl_oid *soid; 1232 struct atse_softc *sc; 1233 int i; 1234 1235 sc = device_get_softc(dev); 1236 sctx = device_get_sysctl_ctx(dev); 1237 soid = device_get_sysctl_tree(dev); 1238 1239 /* MAC statistics. */ 1240 for (i = 0; i < nitems(atse_mac_stats_regs); i++) { 1241 if (atse_mac_stats_regs[i].name == NULL || 1242 atse_mac_stats_regs[i].descr == NULL) { 1243 continue; 1244 } 1245 1246 SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, 1247 atse_mac_stats_regs[i].name, CTLTYPE_UINT|CTLFLAG_RD, 1248 sc, i, sysctl_atse_mac_stats_proc, "IU", 1249 atse_mac_stats_regs[i].descr); 1250 } 1251 1252 /* rx_err[]. */ 1253 for (i = 0; i < ATSE_RX_ERR_MAX; i++) { 1254 if (atse_rx_err_stats_regs[i].name == NULL || 1255 atse_rx_err_stats_regs[i].descr == NULL) { 1256 continue; 1257 } 1258 1259 SYSCTL_ADD_PROC(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, 1260 atse_rx_err_stats_regs[i].name, CTLTYPE_UINT|CTLFLAG_RD, 1261 sc, i, sysctl_atse_rx_err_stats_proc, "IU", 1262 atse_rx_err_stats_regs[i].descr); 1263 } 1264 } 1265 1266 /* 1267 * Generic device handling routines. 1268 */ 1269 int 1270 atse_attach(device_t dev) 1271 { 1272 struct atse_softc *sc; 1273 struct ifnet *ifp; 1274 uint32_t caps; 1275 int error; 1276 1277 sc = device_get_softc(dev); 1278 sc->dev = dev; 1279 1280 /* Get xDMA controller */ 1281 sc->xdma_tx = xdma_ofw_get(sc->dev, "tx"); 1282 if (sc->xdma_tx == NULL) { 1283 device_printf(dev, "Can't find DMA controller.\n"); 1284 return (ENXIO); 1285 } 1286 1287 /* 1288 * Only final (EOP) write can be less than "symbols per beat" value 1289 * so we have to defrag mbuf chain. 1290 * Chapter 15. On-Chip FIFO Memory Core. 1291 * Embedded Peripherals IP User Guide. 1292 */ 1293 caps = XCHAN_CAP_BUSDMA_NOSEG; 1294 1295 /* Alloc xDMA virtual channel. */ 1296 sc->xchan_tx = xdma_channel_alloc(sc->xdma_tx, caps); 1297 if (sc->xchan_tx == NULL) { 1298 device_printf(dev, "Can't alloc virtual DMA channel.\n"); 1299 return (ENXIO); 1300 } 1301 1302 /* Setup interrupt handler. */ 1303 error = xdma_setup_intr(sc->xchan_tx, atse_xdma_tx_intr, sc, &sc->ih_tx); 1304 if (error) { 1305 device_printf(sc->dev, 1306 "Can't setup xDMA interrupt handler.\n"); 1307 return (ENXIO); 1308 } 1309 1310 xdma_prep_sg(sc->xchan_tx, 1311 TX_QUEUE_SIZE, /* xchan requests queue size */ 1312 MCLBYTES, /* maxsegsize */ 1313 8, /* maxnsegs */ 1314 16, /* alignment */ 1315 0, /* boundary */ 1316 BUS_SPACE_MAXADDR_32BIT, 1317 BUS_SPACE_MAXADDR); 1318 1319 /* Get RX xDMA controller */ 1320 sc->xdma_rx = xdma_ofw_get(sc->dev, "rx"); 1321 if (sc->xdma_rx == NULL) { 1322 device_printf(dev, "Can't find DMA controller.\n"); 1323 return (ENXIO); 1324 } 1325 1326 /* Alloc xDMA virtual channel. */ 1327 sc->xchan_rx = xdma_channel_alloc(sc->xdma_rx, caps); 1328 if (sc->xchan_rx == NULL) { 1329 device_printf(dev, "Can't alloc virtual DMA channel.\n"); 1330 return (ENXIO); 1331 } 1332 1333 /* Setup interrupt handler. */ 1334 error = xdma_setup_intr(sc->xchan_rx, atse_xdma_rx_intr, sc, &sc->ih_rx); 1335 if (error) { 1336 device_printf(sc->dev, 1337 "Can't setup xDMA interrupt handler.\n"); 1338 return (ENXIO); 1339 } 1340 1341 xdma_prep_sg(sc->xchan_rx, 1342 RX_QUEUE_SIZE, /* xchan requests queue size */ 1343 MCLBYTES, /* maxsegsize */ 1344 1, /* maxnsegs */ 1345 16, /* alignment */ 1346 0, /* boundary */ 1347 BUS_SPACE_MAXADDR_32BIT, 1348 BUS_SPACE_MAXADDR); 1349 1350 mtx_init(&sc->br_mtx, "buf ring mtx", NULL, MTX_DEF); 1351 sc->br = buf_ring_alloc(BUFRING_SIZE, M_DEVBUF, 1352 M_NOWAIT, &sc->br_mtx); 1353 if (sc->br == NULL) { 1354 return (ENOMEM); 1355 } 1356 1357 atse_ethernet_option_bits_read(dev); 1358 1359 mtx_init(&sc->atse_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1360 MTX_DEF); 1361 1362 callout_init_mtx(&sc->atse_tick, &sc->atse_mtx, 0); 1363 1364 /* 1365 * We are only doing single-PHY with this driver currently. The 1366 * defaults would be right so that BASE_CFG_MDIO_ADDR0 points to the 1367 * 1st PHY address (0) apart from the fact that BMCR0 is always 1368 * the PCS mapping, so we always use BMCR1. See Table 5-1 0xA0-0xBF. 1369 */ 1370 #if 0 /* Always PCS. */ 1371 sc->atse_bmcr0 = MDIO_0_START; 1372 CSR_WRITE_4(sc, BASE_CFG_MDIO_ADDR0, 0x00); 1373 #endif 1374 /* Always use matching PHY for atse[0..]. */ 1375 sc->atse_phy_addr = device_get_unit(dev); 1376 sc->atse_bmcr1 = MDIO_1_START; 1377 CSR_WRITE_4(sc, BASE_CFG_MDIO_ADDR1, sc->atse_phy_addr); 1378 1379 /* Reset the adapter. */ 1380 atse_reset(sc); 1381 1382 /* Setup interface. */ 1383 ifp = sc->atse_ifp = if_alloc(IFT_ETHER); 1384 if (ifp == NULL) { 1385 device_printf(dev, "if_alloc() failed\n"); 1386 error = ENOSPC; 1387 goto err; 1388 } 1389 ifp->if_softc = sc; 1390 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1391 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1392 ifp->if_ioctl = atse_ioctl; 1393 ifp->if_transmit = atse_transmit; 1394 ifp->if_qflush = atse_qflush; 1395 ifp->if_init = atse_init; 1396 IFQ_SET_MAXLEN(&ifp->if_snd, ATSE_TX_LIST_CNT - 1); 1397 ifp->if_snd.ifq_drv_maxlen = ATSE_TX_LIST_CNT - 1; 1398 IFQ_SET_READY(&ifp->if_snd); 1399 1400 /* MII setup. */ 1401 error = mii_attach(dev, &sc->atse_miibus, ifp, atse_ifmedia_upd, 1402 atse_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1403 if (error != 0) { 1404 device_printf(dev, "attaching PHY failed: %d\n", error); 1405 goto err; 1406 } 1407 1408 /* Call media-indepedent attach routine. */ 1409 ether_ifattach(ifp, sc->atse_eth_addr); 1410 1411 /* Tell the upper layer(s) about vlan mtu support. */ 1412 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 1413 ifp->if_capabilities |= IFCAP_VLAN_MTU; 1414 ifp->if_capenable = ifp->if_capabilities; 1415 1416 err: 1417 if (error != 0) { 1418 atse_detach(dev); 1419 } 1420 1421 if (error == 0) { 1422 atse_sysctl_stats_attach(dev); 1423 } 1424 1425 atse_rx_enqueue(sc, NUM_RX_MBUF); 1426 xdma_queue_submit(sc->xchan_rx); 1427 1428 return (error); 1429 } 1430 1431 static int 1432 atse_detach(device_t dev) 1433 { 1434 struct atse_softc *sc; 1435 struct ifnet *ifp; 1436 1437 sc = device_get_softc(dev); 1438 KASSERT(mtx_initialized(&sc->atse_mtx), ("%s: mutex not initialized", 1439 device_get_nameunit(dev))); 1440 ifp = sc->atse_ifp; 1441 1442 /* Only cleanup if attach succeeded. */ 1443 if (device_is_attached(dev)) { 1444 ATSE_LOCK(sc); 1445 atse_stop_locked(sc); 1446 ATSE_UNLOCK(sc); 1447 callout_drain(&sc->atse_tick); 1448 ether_ifdetach(ifp); 1449 } 1450 if (sc->atse_miibus != NULL) { 1451 device_delete_child(dev, sc->atse_miibus); 1452 } 1453 1454 if (ifp != NULL) { 1455 if_free(ifp); 1456 } 1457 1458 mtx_destroy(&sc->atse_mtx); 1459 1460 return (0); 1461 } 1462 1463 /* Shared between nexus and fdt implementation. */ 1464 void 1465 atse_detach_resources(device_t dev) 1466 { 1467 struct atse_softc *sc; 1468 1469 sc = device_get_softc(dev); 1470 1471 if (sc->atse_mem_res != NULL) { 1472 bus_release_resource(dev, SYS_RES_MEMORY, sc->atse_mem_rid, 1473 sc->atse_mem_res); 1474 sc->atse_mem_res = NULL; 1475 } 1476 } 1477 1478 int 1479 atse_detach_dev(device_t dev) 1480 { 1481 int error; 1482 1483 error = atse_detach(dev); 1484 if (error) { 1485 /* We are basically in undefined state now. */ 1486 device_printf(dev, "atse_detach() failed: %d\n", error); 1487 return (error); 1488 } 1489 1490 atse_detach_resources(dev); 1491 1492 return (0); 1493 } 1494 1495 int 1496 atse_miibus_readreg(device_t dev, int phy, int reg) 1497 { 1498 struct atse_softc *sc; 1499 int val; 1500 1501 sc = device_get_softc(dev); 1502 1503 /* 1504 * We currently do not support re-mapping of MDIO space on-the-fly 1505 * but de-facto hard-code the phy#. 1506 */ 1507 if (phy != sc->atse_phy_addr) { 1508 return (0); 1509 } 1510 1511 val = PHY_READ_2(sc, reg); 1512 1513 return (val); 1514 } 1515 1516 int 1517 atse_miibus_writereg(device_t dev, int phy, int reg, int data) 1518 { 1519 struct atse_softc *sc; 1520 1521 sc = device_get_softc(dev); 1522 1523 /* 1524 * We currently do not support re-mapping of MDIO space on-the-fly 1525 * but de-facto hard-code the phy#. 1526 */ 1527 if (phy != sc->atse_phy_addr) { 1528 return (0); 1529 } 1530 1531 PHY_WRITE_2(sc, reg, data); 1532 return (0); 1533 } 1534 1535 void 1536 atse_miibus_statchg(device_t dev) 1537 { 1538 struct atse_softc *sc; 1539 struct mii_data *mii; 1540 struct ifnet *ifp; 1541 uint32_t val4; 1542 1543 sc = device_get_softc(dev); 1544 ATSE_LOCK_ASSERT(sc); 1545 1546 mii = device_get_softc(sc->atse_miibus); 1547 ifp = sc->atse_ifp; 1548 if (mii == NULL || ifp == NULL || 1549 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1550 return; 1551 } 1552 1553 val4 = CSR_READ_4(sc, BASE_CFG_COMMAND_CONFIG); 1554 1555 /* Assume no link. */ 1556 sc->atse_flags &= ~ATSE_FLAGS_LINK; 1557 1558 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 1559 (IFM_ACTIVE | IFM_AVALID)) { 1560 1561 switch (IFM_SUBTYPE(mii->mii_media_active)) { 1562 case IFM_10_T: 1563 val4 |= BASE_CFG_COMMAND_CONFIG_ENA_10; 1564 val4 &= ~BASE_CFG_COMMAND_CONFIG_ETH_SPEED; 1565 sc->atse_flags |= ATSE_FLAGS_LINK; 1566 break; 1567 case IFM_100_TX: 1568 val4 &= ~BASE_CFG_COMMAND_CONFIG_ENA_10; 1569 val4 &= ~BASE_CFG_COMMAND_CONFIG_ETH_SPEED; 1570 sc->atse_flags |= ATSE_FLAGS_LINK; 1571 break; 1572 case IFM_1000_T: 1573 val4 &= ~BASE_CFG_COMMAND_CONFIG_ENA_10; 1574 val4 |= BASE_CFG_COMMAND_CONFIG_ETH_SPEED; 1575 sc->atse_flags |= ATSE_FLAGS_LINK; 1576 break; 1577 default: 1578 break; 1579 } 1580 } 1581 1582 if ((sc->atse_flags & ATSE_FLAGS_LINK) == 0) { 1583 /* Need to stop the MAC? */ 1584 return; 1585 } 1586 1587 if (IFM_OPTIONS(mii->mii_media_active & IFM_FDX) != 0) { 1588 val4 &= ~BASE_CFG_COMMAND_CONFIG_HD_ENA; 1589 } else { 1590 val4 |= BASE_CFG_COMMAND_CONFIG_HD_ENA; 1591 } 1592 1593 /* flow control? */ 1594 1595 /* Make sure the MAC is activated. */ 1596 val4 |= BASE_CFG_COMMAND_CONFIG_TX_ENA; 1597 val4 |= BASE_CFG_COMMAND_CONFIG_RX_ENA; 1598 1599 CSR_WRITE_4(sc, BASE_CFG_COMMAND_CONFIG, val4); 1600 } 1601 1602 MODULE_DEPEND(atse, ether, 1, 1, 1); 1603 MODULE_DEPEND(atse, miibus, 1, 1, 1);
Cache object: b610e25451a93260cea22039bfffefee
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