Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/powerpc/ps3/if_glc.c
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1 /*- 2 * Copyright (C) 2010 Nathan Whitehorn 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD: releng/10.1/sys/powerpc/ps3/if_glc.c 243882 2012-12-05 08:04:20Z glebius $ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/sockio.h> 31 #include <sys/endian.h> 32 #include <sys/mbuf.h> 33 #include <sys/module.h> 34 #include <sys/malloc.h> 35 #include <sys/kernel.h> 36 #include <sys/socket.h> 37 38 #include <vm/vm.h> 39 #include <vm/pmap.h> 40 41 #include <net/bpf.h> 42 #include <net/if.h> 43 #include <net/if_arp.h> 44 #include <net/ethernet.h> 45 #include <net/if_dl.h> 46 #include <net/if_media.h> 47 #include <net/if_types.h> 48 #include <net/if_vlan_var.h> 49 50 #include <machine/pio.h> 51 #include <machine/bus.h> 52 #include <machine/platform.h> 53 #include <machine/pmap.h> 54 #include <machine/resource.h> 55 #include <sys/bus.h> 56 #include <sys/rman.h> 57 58 #include "ps3bus.h" 59 #include "ps3-hvcall.h" 60 #include "if_glcreg.h" 61 62 static int glc_probe(device_t); 63 static int glc_attach(device_t); 64 static void glc_init(void *xsc); 65 static void glc_start(struct ifnet *ifp); 66 static int glc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 67 static void glc_set_multicast(struct glc_softc *sc); 68 static int glc_add_rxbuf(struct glc_softc *sc, int idx); 69 static int glc_add_rxbuf_dma(struct glc_softc *sc, int idx); 70 static int glc_encap(struct glc_softc *sc, struct mbuf **m_head, 71 bus_addr_t *pktdesc); 72 static int glc_intr_filter(void *xsc); 73 static void glc_intr(void *xsc); 74 static void glc_tick(void *xsc); 75 static void glc_media_status(struct ifnet *ifp, struct ifmediareq *ifmr); 76 static int glc_media_change(struct ifnet *ifp); 77 78 static MALLOC_DEFINE(M_GLC, "gelic", "PS3 GELIC ethernet"); 79 80 static device_method_t glc_methods[] = { 81 /* Device interface */ 82 DEVMETHOD(device_probe, glc_probe), 83 DEVMETHOD(device_attach, glc_attach), 84 85 { 0, 0 } 86 }; 87 88 static driver_t glc_driver = { 89 "glc", 90 glc_methods, 91 sizeof(struct glc_softc) 92 }; 93 94 static devclass_t glc_devclass; 95 96 DRIVER_MODULE(glc, ps3bus, glc_driver, glc_devclass, 0, 0); 97 98 static int 99 glc_probe(device_t dev) 100 { 101 102 if (ps3bus_get_bustype(dev) != PS3_BUSTYPE_SYSBUS || 103 ps3bus_get_devtype(dev) != PS3_DEVTYPE_GELIC) 104 return (ENXIO); 105 106 device_set_desc(dev, "Playstation 3 GELIC Network Controller"); 107 return (BUS_PROBE_SPECIFIC); 108 } 109 110 static void 111 glc_getphys(void *xaddr, bus_dma_segment_t *segs, int nsegs, int error) 112 { 113 if (error != 0) 114 return; 115 116 *(bus_addr_t *)xaddr = segs[0].ds_addr; 117 } 118 119 static int 120 glc_attach(device_t dev) 121 { 122 struct glc_softc *sc; 123 struct glc_txsoft *txs; 124 uint64_t mac64, val, junk; 125 int i, err; 126 127 sc = device_get_softc(dev); 128 129 sc->sc_bus = ps3bus_get_bus(dev); 130 sc->sc_dev = ps3bus_get_device(dev); 131 sc->sc_self = dev; 132 133 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 134 MTX_DEF); 135 callout_init_mtx(&sc->sc_tick_ch, &sc->sc_mtx, 0); 136 sc->next_txdma_slot = 0; 137 sc->bsy_txdma_slots = 0; 138 sc->sc_next_rxdma_slot = 0; 139 sc->first_used_txdma_slot = -1; 140 141 /* 142 * Shut down existing tasks. 143 */ 144 145 lv1_net_stop_tx_dma(sc->sc_bus, sc->sc_dev, 0); 146 lv1_net_stop_rx_dma(sc->sc_bus, sc->sc_dev, 0); 147 148 sc->sc_ifp = if_alloc(IFT_ETHER); 149 sc->sc_ifp->if_softc = sc; 150 151 /* 152 * Get MAC address and VLAN id 153 */ 154 155 lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_GET_MAC_ADDRESS, 156 0, 0, 0, &mac64, &junk); 157 memcpy(sc->sc_enaddr, &((uint8_t *)&mac64)[2], sizeof(sc->sc_enaddr)); 158 sc->sc_tx_vlan = sc->sc_rx_vlan = -1; 159 err = lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_GET_VLAN_ID, 160 GELIC_VLAN_TX_ETHERNET, 0, 0, &val, &junk); 161 if (err == 0) 162 sc->sc_tx_vlan = val; 163 err = lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_GET_VLAN_ID, 164 GELIC_VLAN_RX_ETHERNET, 0, 0, &val, &junk); 165 if (err == 0) 166 sc->sc_rx_vlan = val; 167 168 /* 169 * Set up interrupt handler 170 */ 171 sc->sc_irqid = 0; 172 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irqid, 173 RF_ACTIVE); 174 if (sc->sc_irq == NULL) { 175 device_printf(dev, "Could not allocate IRQ!\n"); 176 mtx_destroy(&sc->sc_mtx); 177 return (ENXIO); 178 } 179 180 bus_setup_intr(dev, sc->sc_irq, 181 INTR_TYPE_NET | INTR_MPSAFE | INTR_ENTROPY, 182 glc_intr_filter, glc_intr, sc, &sc->sc_irqctx); 183 sc->sc_hwirq_status = (uint64_t *)contigmalloc(8, M_GLC, M_ZERO, 0, 184 BUS_SPACE_MAXADDR_32BIT, 8, PAGE_SIZE); 185 lv1_net_set_interrupt_status_indicator(sc->sc_bus, sc->sc_dev, 186 vtophys(sc->sc_hwirq_status), 0); 187 lv1_net_set_interrupt_mask(sc->sc_bus, sc->sc_dev, 188 GELIC_INT_RXDONE | GELIC_INT_RXFRAME | GELIC_INT_PHY | 189 GELIC_INT_TX_CHAIN_END, 0); 190 191 /* 192 * Set up DMA. 193 */ 194 195 err = bus_dma_tag_create(bus_get_dma_tag(dev), 32, 0, 196 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 197 129*sizeof(struct glc_dmadesc), 1, 128*sizeof(struct glc_dmadesc), 198 0, NULL,NULL, &sc->sc_dmadesc_tag); 199 200 err = bus_dmamem_alloc(sc->sc_dmadesc_tag, (void **)&sc->sc_txdmadesc, 201 BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO, 202 &sc->sc_txdmadesc_map); 203 err = bus_dmamap_load(sc->sc_dmadesc_tag, sc->sc_txdmadesc_map, 204 sc->sc_txdmadesc, 128*sizeof(struct glc_dmadesc), glc_getphys, 205 &sc->sc_txdmadesc_phys, 0); 206 err = bus_dmamem_alloc(sc->sc_dmadesc_tag, (void **)&sc->sc_rxdmadesc, 207 BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO, 208 &sc->sc_rxdmadesc_map); 209 err = bus_dmamap_load(sc->sc_dmadesc_tag, sc->sc_rxdmadesc_map, 210 sc->sc_rxdmadesc, 128*sizeof(struct glc_dmadesc), glc_getphys, 211 &sc->sc_rxdmadesc_phys, 0); 212 213 err = bus_dma_tag_create(bus_get_dma_tag(dev), 128, 0, 214 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 215 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0, NULL,NULL, 216 &sc->sc_rxdma_tag); 217 err = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, 218 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL, 219 BUS_SPACE_MAXSIZE_32BIT, 16, BUS_SPACE_MAXSIZE_32BIT, 0, NULL,NULL, 220 &sc->sc_txdma_tag); 221 222 /* init transmit descriptors */ 223 STAILQ_INIT(&sc->sc_txfreeq); 224 STAILQ_INIT(&sc->sc_txdirtyq); 225 226 /* create TX DMA maps */ 227 err = ENOMEM; 228 for (i = 0; i < GLC_MAX_TX_PACKETS; i++) { 229 txs = &sc->sc_txsoft[i]; 230 txs->txs_mbuf = NULL; 231 err = bus_dmamap_create(sc->sc_txdma_tag, 0, &txs->txs_dmamap); 232 if (err) { 233 device_printf(dev, 234 "unable to create TX DMA map %d, error = %d\n", 235 i, err); 236 } 237 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 238 } 239 240 /* Create the receive buffer DMA maps. */ 241 for (i = 0; i < GLC_MAX_RX_PACKETS; i++) { 242 err = bus_dmamap_create(sc->sc_rxdma_tag, 0, 243 &sc->sc_rxsoft[i].rxs_dmamap); 244 if (err) { 245 device_printf(dev, 246 "unable to create RX DMA map %d, error = %d\n", 247 i, err); 248 } 249 sc->sc_rxsoft[i].rxs_mbuf = NULL; 250 } 251 252 /* 253 * Attach to network stack 254 */ 255 256 if_initname(sc->sc_ifp, device_get_name(dev), device_get_unit(dev)); 257 sc->sc_ifp->if_mtu = ETHERMTU; 258 sc->sc_ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 259 sc->sc_ifp->if_hwassist = CSUM_TCP | CSUM_UDP; 260 sc->sc_ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_RXCSUM; 261 sc->sc_ifp->if_capenable = IFCAP_HWCSUM | IFCAP_RXCSUM; 262 sc->sc_ifp->if_start = glc_start; 263 sc->sc_ifp->if_ioctl = glc_ioctl; 264 sc->sc_ifp->if_init = glc_init; 265 266 ifmedia_init(&sc->sc_media, IFM_IMASK, glc_media_change, 267 glc_media_status); 268 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_T, 0, NULL); 269 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_T | IFM_FDX, 0, NULL); 270 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_100_TX, 0, NULL); 271 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_100_TX | IFM_FDX, 0, NULL); 272 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); 273 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); 274 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); 275 276 IFQ_SET_MAXLEN(&sc->sc_ifp->if_snd, GLC_MAX_TX_PACKETS); 277 sc->sc_ifp->if_snd.ifq_drv_maxlen = GLC_MAX_TX_PACKETS; 278 IFQ_SET_READY(&sc->sc_ifp->if_snd); 279 280 ether_ifattach(sc->sc_ifp, sc->sc_enaddr); 281 sc->sc_ifp->if_hwassist = 0; 282 283 return (0); 284 285 mtx_destroy(&sc->sc_mtx); 286 if_free(sc->sc_ifp); 287 return (ENXIO); 288 } 289 290 static void 291 glc_init_locked(struct glc_softc *sc) 292 { 293 int i, error; 294 struct glc_rxsoft *rxs; 295 struct glc_txsoft *txs; 296 297 mtx_assert(&sc->sc_mtx, MA_OWNED); 298 299 lv1_net_stop_tx_dma(sc->sc_bus, sc->sc_dev, 0); 300 lv1_net_stop_rx_dma(sc->sc_bus, sc->sc_dev, 0); 301 302 glc_set_multicast(sc); 303 304 for (i = 0; i < GLC_MAX_RX_PACKETS; i++) { 305 rxs = &sc->sc_rxsoft[i]; 306 rxs->rxs_desc_slot = i; 307 308 if (rxs->rxs_mbuf == NULL) { 309 glc_add_rxbuf(sc, i); 310 311 if (rxs->rxs_mbuf == NULL) { 312 rxs->rxs_desc_slot = -1; 313 break; 314 } 315 } 316 317 glc_add_rxbuf_dma(sc, i); 318 bus_dmamap_sync(sc->sc_dmadesc_tag, sc->sc_rxdmadesc_map, 319 BUS_DMASYNC_PREREAD); 320 } 321 322 /* Clear TX dirty queue */ 323 while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 324 STAILQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 325 bus_dmamap_unload(sc->sc_txdma_tag, txs->txs_dmamap); 326 327 if (txs->txs_mbuf != NULL) { 328 m_freem(txs->txs_mbuf); 329 txs->txs_mbuf = NULL; 330 } 331 332 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 333 } 334 sc->first_used_txdma_slot = -1; 335 sc->bsy_txdma_slots = 0; 336 337 error = lv1_net_start_rx_dma(sc->sc_bus, sc->sc_dev, 338 sc->sc_rxsoft[0].rxs_desc, 0); 339 if (error != 0) 340 device_printf(sc->sc_self, 341 "lv1_net_start_rx_dma error: %d\n", error); 342 343 sc->sc_ifp->if_drv_flags |= IFF_DRV_RUNNING; 344 sc->sc_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 345 sc->sc_ifpflags = sc->sc_ifp->if_flags; 346 347 sc->sc_wdog_timer = 0; 348 callout_reset(&sc->sc_tick_ch, hz, glc_tick, sc); 349 } 350 351 static void 352 glc_stop(void *xsc) 353 { 354 struct glc_softc *sc = xsc; 355 356 mtx_assert(&sc->sc_mtx, MA_OWNED); 357 358 lv1_net_stop_tx_dma(sc->sc_bus, sc->sc_dev, 0); 359 lv1_net_stop_rx_dma(sc->sc_bus, sc->sc_dev, 0); 360 } 361 362 static void 363 glc_init(void *xsc) 364 { 365 struct glc_softc *sc = xsc; 366 367 mtx_lock(&sc->sc_mtx); 368 glc_init_locked(sc); 369 mtx_unlock(&sc->sc_mtx); 370 } 371 372 static void 373 glc_tick(void *xsc) 374 { 375 struct glc_softc *sc = xsc; 376 377 mtx_assert(&sc->sc_mtx, MA_OWNED); 378 379 /* 380 * XXX: Sometimes the RX queue gets stuck. Poke it periodically until 381 * we figure out why. This will fail harmlessly if the RX queue is 382 * already running. 383 */ 384 lv1_net_start_rx_dma(sc->sc_bus, sc->sc_dev, 385 sc->sc_rxsoft[sc->sc_next_rxdma_slot].rxs_desc, 0); 386 387 if (sc->sc_wdog_timer == 0 || --sc->sc_wdog_timer != 0) { 388 callout_reset(&sc->sc_tick_ch, hz, glc_tick, sc); 389 return; 390 } 391 392 /* Problems */ 393 device_printf(sc->sc_self, "device timeout\n"); 394 395 glc_init_locked(sc); 396 } 397 398 static void 399 glc_start_locked(struct ifnet *ifp) 400 { 401 struct glc_softc *sc = ifp->if_softc; 402 bus_addr_t first, pktdesc; 403 int kickstart = 0; 404 int error; 405 struct mbuf *mb_head; 406 407 mtx_assert(&sc->sc_mtx, MA_OWNED); 408 first = 0; 409 410 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 411 IFF_DRV_RUNNING) 412 return; 413 414 if (STAILQ_EMPTY(&sc->sc_txdirtyq)) 415 kickstart = 1; 416 417 while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { 418 IFQ_DRV_DEQUEUE(&ifp->if_snd, mb_head); 419 420 if (mb_head == NULL) 421 break; 422 423 /* Check if the ring buffer is full */ 424 if (sc->bsy_txdma_slots > 125) { 425 /* Put the packet back and stop */ 426 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 427 IFQ_DRV_PREPEND(&ifp->if_snd, mb_head); 428 break; 429 } 430 431 BPF_MTAP(ifp, mb_head); 432 433 if (sc->sc_tx_vlan >= 0) 434 mb_head = ether_vlanencap(mb_head, sc->sc_tx_vlan); 435 436 if (glc_encap(sc, &mb_head, &pktdesc)) { 437 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 438 break; 439 } 440 441 if (first == 0) 442 first = pktdesc; 443 } 444 445 if (kickstart && first != 0) { 446 error = lv1_net_start_tx_dma(sc->sc_bus, sc->sc_dev, first, 0); 447 if (error != 0) 448 device_printf(sc->sc_self, 449 "lv1_net_start_tx_dma error: %d\n", error); 450 sc->sc_wdog_timer = 5; 451 } 452 } 453 454 static void 455 glc_start(struct ifnet *ifp) 456 { 457 struct glc_softc *sc = ifp->if_softc; 458 459 mtx_lock(&sc->sc_mtx); 460 glc_start_locked(ifp); 461 mtx_unlock(&sc->sc_mtx); 462 } 463 464 static int 465 glc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 466 { 467 struct glc_softc *sc = ifp->if_softc; 468 struct ifreq *ifr = (struct ifreq *)data; 469 int err = 0; 470 471 switch (cmd) { 472 case SIOCSIFFLAGS: 473 mtx_lock(&sc->sc_mtx); 474 if ((ifp->if_flags & IFF_UP) != 0) { 475 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 && 476 ((ifp->if_flags ^ sc->sc_ifpflags) & 477 (IFF_ALLMULTI | IFF_PROMISC)) != 0) 478 glc_set_multicast(sc); 479 else 480 glc_init_locked(sc); 481 } 482 else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 483 glc_stop(sc); 484 sc->sc_ifpflags = ifp->if_flags; 485 mtx_unlock(&sc->sc_mtx); 486 break; 487 case SIOCADDMULTI: 488 case SIOCDELMULTI: 489 mtx_lock(&sc->sc_mtx); 490 glc_set_multicast(sc); 491 mtx_unlock(&sc->sc_mtx); 492 break; 493 case SIOCGIFMEDIA: 494 case SIOCSIFMEDIA: 495 err = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 496 break; 497 default: 498 err = ether_ioctl(ifp, cmd, data); 499 break; 500 } 501 502 return (err); 503 } 504 505 static void 506 glc_set_multicast(struct glc_softc *sc) 507 { 508 struct ifnet *ifp = sc->sc_ifp; 509 struct ifmultiaddr *inm; 510 uint64_t addr; 511 int naddrs; 512 513 /* Clear multicast filter */ 514 lv1_net_remove_multicast_address(sc->sc_bus, sc->sc_dev, 0, 1); 515 516 /* Add broadcast */ 517 lv1_net_add_multicast_address(sc->sc_bus, sc->sc_dev, 518 0xffffffffffffL, 0); 519 520 if ((ifp->if_flags & IFF_ALLMULTI) != 0) { 521 lv1_net_add_multicast_address(sc->sc_bus, sc->sc_dev, 0, 1); 522 } else { 523 if_maddr_rlock(ifp); 524 naddrs = 1; /* Include broadcast */ 525 TAILQ_FOREACH(inm, &ifp->if_multiaddrs, ifma_link) { 526 if (inm->ifma_addr->sa_family != AF_LINK) 527 continue; 528 addr = 0; 529 memcpy(&((uint8_t *)(&addr))[2], 530 LLADDR((struct sockaddr_dl *)inm->ifma_addr), 531 ETHER_ADDR_LEN); 532 533 lv1_net_add_multicast_address(sc->sc_bus, sc->sc_dev, 534 addr, 0); 535 536 /* 537 * Filter can only hold 32 addresses, so fall back to 538 * the IFF_ALLMULTI case if we have too many. 539 */ 540 if (++naddrs >= 32) { 541 lv1_net_add_multicast_address(sc->sc_bus, 542 sc->sc_dev, 0, 1); 543 break; 544 } 545 } 546 if_maddr_runlock(ifp); 547 } 548 } 549 550 static int 551 glc_add_rxbuf(struct glc_softc *sc, int idx) 552 { 553 struct glc_rxsoft *rxs = &sc->sc_rxsoft[idx]; 554 struct mbuf *m; 555 bus_dma_segment_t segs[1]; 556 int error, nsegs; 557 558 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 559 if (m == NULL) 560 return (ENOBUFS); 561 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 562 563 if (rxs->rxs_mbuf != NULL) { 564 bus_dmamap_sync(sc->sc_rxdma_tag, rxs->rxs_dmamap, 565 BUS_DMASYNC_POSTREAD); 566 bus_dmamap_unload(sc->sc_rxdma_tag, rxs->rxs_dmamap); 567 } 568 569 error = bus_dmamap_load_mbuf_sg(sc->sc_rxdma_tag, rxs->rxs_dmamap, m, 570 segs, &nsegs, BUS_DMA_NOWAIT); 571 if (error != 0) { 572 device_printf(sc->sc_self, 573 "cannot load RS DMA map %d, error = %d\n", idx, error); 574 m_freem(m); 575 return (error); 576 } 577 /* If nsegs is wrong then the stack is corrupt. */ 578 KASSERT(nsegs == 1, 579 ("%s: too many DMA segments (%d)", __func__, nsegs)); 580 rxs->rxs_mbuf = m; 581 rxs->segment = segs[0]; 582 583 bus_dmamap_sync(sc->sc_rxdma_tag, rxs->rxs_dmamap, BUS_DMASYNC_PREREAD); 584 585 return (0); 586 } 587 588 static int 589 glc_add_rxbuf_dma(struct glc_softc *sc, int idx) 590 { 591 struct glc_rxsoft *rxs = &sc->sc_rxsoft[idx]; 592 593 bzero(&sc->sc_rxdmadesc[idx], sizeof(sc->sc_rxdmadesc[idx])); 594 sc->sc_rxdmadesc[idx].paddr = rxs->segment.ds_addr; 595 sc->sc_rxdmadesc[idx].len = rxs->segment.ds_len; 596 sc->sc_rxdmadesc[idx].next = sc->sc_rxdmadesc_phys + 597 ((idx + 1) % GLC_MAX_RX_PACKETS)*sizeof(sc->sc_rxdmadesc[idx]); 598 sc->sc_rxdmadesc[idx].cmd_stat = GELIC_DESCR_OWNED; 599 600 rxs->rxs_desc_slot = idx; 601 rxs->rxs_desc = sc->sc_rxdmadesc_phys + idx*sizeof(struct glc_dmadesc); 602 603 return (0); 604 } 605 606 static int 607 glc_encap(struct glc_softc *sc, struct mbuf **m_head, bus_addr_t *pktdesc) 608 { 609 bus_dma_segment_t segs[16]; 610 struct glc_txsoft *txs; 611 struct mbuf *m; 612 bus_addr_t firstslotphys; 613 int i, idx, nsegs, nsegs_max; 614 int err = 0; 615 616 /* Max number of segments is the number of free DMA slots */ 617 nsegs_max = 128 - sc->bsy_txdma_slots; 618 619 if (nsegs_max > 16 || sc->first_used_txdma_slot < 0) 620 nsegs_max = 16; 621 622 /* Get a work queue entry. */ 623 if ((txs = STAILQ_FIRST(&sc->sc_txfreeq)) == NULL) { 624 /* Ran out of descriptors. */ 625 return (ENOBUFS); 626 } 627 628 nsegs = 0; 629 for (m = *m_head; m != NULL; m = m->m_next) 630 nsegs++; 631 632 if (nsegs > nsegs_max) { 633 m = m_collapse(*m_head, M_NOWAIT, nsegs_max); 634 if (m == NULL) { 635 m_freem(*m_head); 636 *m_head = NULL; 637 return (ENOBUFS); 638 } 639 *m_head = m; 640 } 641 642 err = bus_dmamap_load_mbuf_sg(sc->sc_txdma_tag, txs->txs_dmamap, 643 *m_head, segs, &nsegs, BUS_DMA_NOWAIT); 644 if (err != 0) { 645 m_freem(*m_head); 646 *m_head = NULL; 647 return (err); 648 } 649 650 KASSERT(nsegs <= 128 - sc->bsy_txdma_slots, 651 ("GLC: Mapped too many (%d) DMA segments with %d available", 652 nsegs, 128 - sc->bsy_txdma_slots)); 653 654 if (nsegs == 0) { 655 m_freem(*m_head); 656 *m_head = NULL; 657 return (EIO); 658 } 659 660 txs->txs_ndescs = nsegs; 661 txs->txs_firstdesc = sc->next_txdma_slot; 662 663 idx = txs->txs_firstdesc; 664 firstslotphys = sc->sc_txdmadesc_phys + 665 txs->txs_firstdesc*sizeof(struct glc_dmadesc); 666 667 for (i = 0; i < nsegs; i++) { 668 bzero(&sc->sc_txdmadesc[idx], sizeof(sc->sc_txdmadesc[idx])); 669 sc->sc_txdmadesc[idx].paddr = segs[i].ds_addr; 670 sc->sc_txdmadesc[idx].len = segs[i].ds_len; 671 sc->sc_txdmadesc[idx].next = sc->sc_txdmadesc_phys + 672 ((idx + 1) % GLC_MAX_TX_PACKETS)*sizeof(struct glc_dmadesc); 673 sc->sc_txdmadesc[idx].cmd_stat |= GELIC_CMDSTAT_NOIPSEC; 674 675 if (i+1 == nsegs) { 676 txs->txs_lastdesc = idx; 677 sc->sc_txdmadesc[idx].next = 0; 678 sc->sc_txdmadesc[idx].cmd_stat |= GELIC_CMDSTAT_LAST; 679 } 680 681 if ((*m_head)->m_pkthdr.csum_flags & CSUM_TCP) 682 sc->sc_txdmadesc[idx].cmd_stat |= GELIC_CMDSTAT_CSUM_TCP; 683 if ((*m_head)->m_pkthdr.csum_flags & CSUM_UDP) 684 sc->sc_txdmadesc[idx].cmd_stat |= GELIC_CMDSTAT_CSUM_UDP; 685 sc->sc_txdmadesc[idx].cmd_stat |= GELIC_DESCR_OWNED; 686 687 idx = (idx + 1) % GLC_MAX_TX_PACKETS; 688 } 689 sc->next_txdma_slot = idx; 690 sc->bsy_txdma_slots += nsegs; 691 if (txs->txs_firstdesc != 0) 692 idx = txs->txs_firstdesc - 1; 693 else 694 idx = GLC_MAX_TX_PACKETS - 1; 695 696 if (sc->first_used_txdma_slot < 0) 697 sc->first_used_txdma_slot = txs->txs_firstdesc; 698 699 bus_dmamap_sync(sc->sc_txdma_tag, txs->txs_dmamap, 700 BUS_DMASYNC_PREWRITE); 701 sc->sc_txdmadesc[idx].next = firstslotphys; 702 703 STAILQ_REMOVE_HEAD(&sc->sc_txfreeq, txs_q); 704 STAILQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q); 705 txs->txs_mbuf = *m_head; 706 *pktdesc = firstslotphys; 707 708 return (0); 709 } 710 711 static void 712 glc_rxintr(struct glc_softc *sc) 713 { 714 int i, restart_rxdma, error; 715 struct mbuf *m; 716 struct ifnet *ifp = sc->sc_ifp; 717 718 bus_dmamap_sync(sc->sc_dmadesc_tag, sc->sc_rxdmadesc_map, 719 BUS_DMASYNC_POSTREAD); 720 721 restart_rxdma = 0; 722 while ((sc->sc_rxdmadesc[sc->sc_next_rxdma_slot].cmd_stat & 723 GELIC_DESCR_OWNED) == 0) { 724 i = sc->sc_next_rxdma_slot; 725 sc->sc_next_rxdma_slot++; 726 if (sc->sc_next_rxdma_slot >= GLC_MAX_RX_PACKETS) 727 sc->sc_next_rxdma_slot = 0; 728 729 if (sc->sc_rxdmadesc[i].cmd_stat & GELIC_CMDSTAT_CHAIN_END) 730 restart_rxdma = 1; 731 732 if (sc->sc_rxdmadesc[i].rxerror & GELIC_RXERRORS) { 733 ifp->if_ierrors++; 734 goto requeue; 735 } 736 737 m = sc->sc_rxsoft[i].rxs_mbuf; 738 if (sc->sc_rxdmadesc[i].data_stat & GELIC_RX_IPCSUM) { 739 m->m_pkthdr.csum_flags |= 740 CSUM_IP_CHECKED | CSUM_IP_VALID; 741 } 742 if (sc->sc_rxdmadesc[i].data_stat & GELIC_RX_TCPUDPCSUM) { 743 m->m_pkthdr.csum_flags |= 744 CSUM_DATA_VALID | CSUM_PSEUDO_HDR; 745 m->m_pkthdr.csum_data = 0xffff; 746 } 747 748 if (glc_add_rxbuf(sc, i)) { 749 ifp->if_ierrors++; 750 goto requeue; 751 } 752 753 ifp->if_ipackets++; 754 m->m_pkthdr.rcvif = ifp; 755 m->m_len = sc->sc_rxdmadesc[i].valid_size; 756 m->m_pkthdr.len = m->m_len; 757 758 /* 759 * Remove VLAN tag. Even on early firmwares that do not allow 760 * multiple VLANs, the VLAN tag is still in place here. 761 */ 762 m_adj(m, 2); 763 764 mtx_unlock(&sc->sc_mtx); 765 (*ifp->if_input)(ifp, m); 766 mtx_lock(&sc->sc_mtx); 767 768 requeue: 769 glc_add_rxbuf_dma(sc, i); 770 } 771 772 bus_dmamap_sync(sc->sc_dmadesc_tag, sc->sc_rxdmadesc_map, 773 BUS_DMASYNC_PREWRITE); 774 775 if (restart_rxdma) { 776 error = lv1_net_start_rx_dma(sc->sc_bus, sc->sc_dev, 777 sc->sc_rxsoft[sc->sc_next_rxdma_slot].rxs_desc, 0); 778 if (error != 0) 779 device_printf(sc->sc_self, 780 "lv1_net_start_rx_dma error: %d\n", error); 781 } 782 } 783 784 static void 785 glc_txintr(struct glc_softc *sc) 786 { 787 struct ifnet *ifp = sc->sc_ifp; 788 struct glc_txsoft *txs; 789 int progress = 0, kickstart = 0, error; 790 791 bus_dmamap_sync(sc->sc_dmadesc_tag, sc->sc_txdmadesc_map, 792 BUS_DMASYNC_POSTREAD); 793 794 while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 795 if (sc->sc_txdmadesc[txs->txs_lastdesc].cmd_stat 796 & GELIC_DESCR_OWNED) 797 break; 798 799 STAILQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 800 bus_dmamap_unload(sc->sc_txdma_tag, txs->txs_dmamap); 801 sc->bsy_txdma_slots -= txs->txs_ndescs; 802 803 if (txs->txs_mbuf != NULL) { 804 m_freem(txs->txs_mbuf); 805 txs->txs_mbuf = NULL; 806 } 807 808 if ((sc->sc_txdmadesc[txs->txs_lastdesc].cmd_stat & 0xf0000000) 809 != 0) { 810 lv1_net_stop_tx_dma(sc->sc_bus, sc->sc_dev, 0); 811 kickstart = 1; 812 ifp->if_oerrors++; 813 } 814 815 if (sc->sc_txdmadesc[txs->txs_lastdesc].cmd_stat & 816 GELIC_CMDSTAT_CHAIN_END) 817 kickstart = 1; 818 819 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 820 ifp->if_opackets++; 821 progress = 1; 822 } 823 824 if (txs != NULL) 825 sc->first_used_txdma_slot = txs->txs_firstdesc; 826 else 827 sc->first_used_txdma_slot = -1; 828 829 if (kickstart || txs != NULL) { 830 /* Speculatively (or necessarily) start the TX queue again */ 831 error = lv1_net_start_tx_dma(sc->sc_bus, sc->sc_dev, 832 sc->sc_txdmadesc_phys + 833 txs->txs_firstdesc*sizeof(struct glc_dmadesc), 0); 834 if (error != 0) 835 device_printf(sc->sc_self, 836 "lv1_net_start_tx_dma error: %d\n", error); 837 } 838 839 if (progress) { 840 /* 841 * We freed some descriptors, so reset IFF_DRV_OACTIVE 842 * and restart. 843 */ 844 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 845 sc->sc_wdog_timer = STAILQ_EMPTY(&sc->sc_txdirtyq) ? 0 : 5; 846 847 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && 848 !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 849 glc_start_locked(ifp); 850 } 851 } 852 853 static int 854 glc_intr_filter(void *xsc) 855 { 856 struct glc_softc *sc = xsc; 857 858 powerpc_sync(); 859 atomic_set_64(&sc->sc_interrupt_status, *sc->sc_hwirq_status); 860 return (FILTER_SCHEDULE_THREAD); 861 } 862 863 static void 864 glc_intr(void *xsc) 865 { 866 struct glc_softc *sc = xsc; 867 uint64_t status, linkstat, junk; 868 869 mtx_lock(&sc->sc_mtx); 870 871 status = atomic_readandclear_64(&sc->sc_interrupt_status); 872 873 if (status == 0) { 874 mtx_unlock(&sc->sc_mtx); 875 return; 876 } 877 878 if (status & (GELIC_INT_RXDONE | GELIC_INT_RXFRAME)) 879 glc_rxintr(sc); 880 881 if (status & (GELIC_INT_TXDONE | GELIC_INT_TX_CHAIN_END)) 882 glc_txintr(sc); 883 884 if (status & GELIC_INT_PHY) { 885 lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_GET_LINK_STATUS, 886 GELIC_VLAN_TX_ETHERNET, 0, 0, &linkstat, &junk); 887 888 linkstat = (linkstat & GELIC_LINK_UP) ? 889 LINK_STATE_UP : LINK_STATE_DOWN; 890 if (linkstat != sc->sc_ifp->if_link_state) 891 if_link_state_change(sc->sc_ifp, linkstat); 892 } 893 894 mtx_unlock(&sc->sc_mtx); 895 } 896 897 static void 898 glc_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 899 { 900 struct glc_softc *sc = ifp->if_softc; 901 uint64_t status, junk; 902 903 ifmr->ifm_status = IFM_AVALID; 904 ifmr->ifm_active = IFM_ETHER; 905 906 lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_GET_LINK_STATUS, 907 GELIC_VLAN_TX_ETHERNET, 0, 0, &status, &junk); 908 909 if (status & GELIC_LINK_UP) 910 ifmr->ifm_status |= IFM_ACTIVE; 911 912 if (status & GELIC_SPEED_10) 913 ifmr->ifm_active |= IFM_10_T; 914 else if (status & GELIC_SPEED_100) 915 ifmr->ifm_active |= IFM_100_TX; 916 else if (status & GELIC_SPEED_1000) 917 ifmr->ifm_active |= IFM_1000_T; 918 919 if (status & GELIC_FULL_DUPLEX) 920 ifmr->ifm_active |= IFM_FDX; 921 else 922 ifmr->ifm_active |= IFM_HDX; 923 } 924 925 static int 926 glc_media_change(struct ifnet *ifp) 927 { 928 struct glc_softc *sc = ifp->if_softc; 929 uint64_t mode, junk; 930 int result; 931 932 if (IFM_TYPE(sc->sc_media.ifm_media) != IFM_ETHER) 933 return (EINVAL); 934 935 switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) { 936 case IFM_AUTO: 937 mode = GELIC_AUTO_NEG; 938 break; 939 case IFM_10_T: 940 mode = GELIC_SPEED_10; 941 break; 942 case IFM_100_TX: 943 mode = GELIC_SPEED_100; 944 break; 945 case IFM_1000_T: 946 mode = GELIC_SPEED_1000 | GELIC_FULL_DUPLEX; 947 break; 948 default: 949 return (EINVAL); 950 } 951 952 if (IFM_OPTIONS(sc->sc_media.ifm_media) & IFM_FDX) 953 mode |= GELIC_FULL_DUPLEX; 954 955 result = lv1_net_control(sc->sc_bus, sc->sc_dev, GELIC_SET_LINK_MODE, 956 GELIC_VLAN_TX_ETHERNET, mode, 0, &junk, &junk); 957 958 return (result ? EIO : 0); 959 } 960
Cache object: 55b6889d2f4a3d30e1bcae4899833811
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