| 1 | /* |
| 2 | * Copyright (c) 2004 Joerg Sonnenberger <joerg@bec.de>. All rights reserved. |
| 3 | * |
| 4 | * Copyright (c) 2001-2008, Intel Corporation |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions are met: |
| 9 | * |
| 10 | * 1. Redistributions of source code must retain the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer. |
| 12 | * |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * 3. Neither the name of the Intel Corporation nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived from |
| 19 | * this software without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 31 | * POSSIBILITY OF SUCH DAMAGE. |
| 32 | * |
| 33 | * |
| 34 | * Copyright (c) 2005 The DragonFly Project. All rights reserved. |
| 35 | * |
| 36 | * This code is derived from software contributed to The DragonFly Project |
| 37 | * by Matthew Dillon <dillon@backplane.com> |
| 38 | * |
| 39 | * Redistribution and use in source and binary forms, with or without |
| 40 | * modification, are permitted provided that the following conditions |
| 41 | * are met: |
| 42 | * |
| 43 | * 1. Redistributions of source code must retain the above copyright |
| 44 | * notice, this list of conditions and the following disclaimer. |
| 45 | * 2. Redistributions in binary form must reproduce the above copyright |
| 46 | * notice, this list of conditions and the following disclaimer in |
| 47 | * the documentation and/or other materials provided with the |
| 48 | * distribution. |
| 49 | * 3. Neither the name of The DragonFly Project nor the names of its |
| 50 | * contributors may be used to endorse or promote products derived |
| 51 | * from this software without specific, prior written permission. |
| 52 | * |
| 53 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 54 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 55 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 56 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 57 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 58 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 59 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 60 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 61 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 62 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 63 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 64 | * SUCH DAMAGE. |
| 65 | */ |
| 66 | |
| 67 | #include "opt_ifpoll.h" |
| 68 | #include "opt_serializer.h" |
| 69 | #include "opt_rss.h" |
| 70 | #include "opt_emx.h" |
| 71 | |
| 72 | #include <sys/param.h> |
| 73 | #include <sys/bus.h> |
| 74 | #include <sys/endian.h> |
| 75 | #include <sys/interrupt.h> |
| 76 | #include <sys/kernel.h> |
| 77 | #include <sys/ktr.h> |
| 78 | #include <sys/malloc.h> |
| 79 | #include <sys/mbuf.h> |
| 80 | #include <sys/proc.h> |
| 81 | #include <sys/rman.h> |
| 82 | #include <sys/serialize.h> |
| 83 | #include <sys/serialize2.h> |
| 84 | #include <sys/socket.h> |
| 85 | #include <sys/sockio.h> |
| 86 | #include <sys/sysctl.h> |
| 87 | #include <sys/systm.h> |
| 88 | |
| 89 | #include <net/bpf.h> |
| 90 | #include <net/ethernet.h> |
| 91 | #include <net/if.h> |
| 92 | #include <net/if_arp.h> |
| 93 | #include <net/if_dl.h> |
| 94 | #include <net/if_media.h> |
| 95 | #include <net/ifq_var.h> |
| 96 | #include <net/toeplitz.h> |
| 97 | #include <net/toeplitz2.h> |
| 98 | #include <net/vlan/if_vlan_var.h> |
| 99 | #include <net/vlan/if_vlan_ether.h> |
| 100 | #include <net/if_poll.h> |
| 101 | |
| 102 | #include <netinet/in_systm.h> |
| 103 | #include <netinet/in.h> |
| 104 | #include <netinet/ip.h> |
| 105 | #include <netinet/tcp.h> |
| 106 | #include <netinet/udp.h> |
| 107 | |
| 108 | #include <bus/pci/pcivar.h> |
| 109 | #include <bus/pci/pcireg.h> |
| 110 | |
| 111 | #include <dev/netif/ig_hal/e1000_api.h> |
| 112 | #include <dev/netif/ig_hal/e1000_82571.h> |
| 113 | #include <dev/netif/emx/if_emx.h> |
| 114 | |
| 115 | #ifdef EMX_RSS_DEBUG |
| 116 | #define EMX_RSS_DPRINTF(sc, lvl, fmt, ...) \ |
| 117 | do { \ |
| 118 | if (sc->rss_debug >= lvl) \ |
| 119 | if_printf(&sc->arpcom.ac_if, fmt, __VA_ARGS__); \ |
| 120 | } while (0) |
| 121 | #else /* !EMX_RSS_DEBUG */ |
| 122 | #define EMX_RSS_DPRINTF(sc, lvl, fmt, ...) ((void)0) |
| 123 | #endif /* EMX_RSS_DEBUG */ |
| 124 | |
| 125 | #define EMX_NAME "Intel(R) PRO/1000 " |
| 126 | |
| 127 | #define EMX_DEVICE(id) \ |
| 128 | { EMX_VENDOR_ID, E1000_DEV_ID_##id, EMX_NAME #id } |
| 129 | #define EMX_DEVICE_NULL { 0, 0, NULL } |
| 130 | |
| 131 | static const struct emx_device { |
| 132 | uint16_t vid; |
| 133 | uint16_t did; |
| 134 | const char *desc; |
| 135 | } emx_devices[] = { |
| 136 | EMX_DEVICE(82571EB_COPPER), |
| 137 | EMX_DEVICE(82571EB_FIBER), |
| 138 | EMX_DEVICE(82571EB_SERDES), |
| 139 | EMX_DEVICE(82571EB_SERDES_DUAL), |
| 140 | EMX_DEVICE(82571EB_SERDES_QUAD), |
| 141 | EMX_DEVICE(82571EB_QUAD_COPPER), |
| 142 | EMX_DEVICE(82571EB_QUAD_COPPER_BP), |
| 143 | EMX_DEVICE(82571EB_QUAD_COPPER_LP), |
| 144 | EMX_DEVICE(82571EB_QUAD_FIBER), |
| 145 | EMX_DEVICE(82571PT_QUAD_COPPER), |
| 146 | |
| 147 | EMX_DEVICE(82572EI_COPPER), |
| 148 | EMX_DEVICE(82572EI_FIBER), |
| 149 | EMX_DEVICE(82572EI_SERDES), |
| 150 | EMX_DEVICE(82572EI), |
| 151 | |
| 152 | EMX_DEVICE(82573E), |
| 153 | EMX_DEVICE(82573E_IAMT), |
| 154 | EMX_DEVICE(82573L), |
| 155 | |
| 156 | EMX_DEVICE(80003ES2LAN_COPPER_SPT), |
| 157 | EMX_DEVICE(80003ES2LAN_SERDES_SPT), |
| 158 | EMX_DEVICE(80003ES2LAN_COPPER_DPT), |
| 159 | EMX_DEVICE(80003ES2LAN_SERDES_DPT), |
| 160 | |
| 161 | EMX_DEVICE(82574L), |
| 162 | |
| 163 | /* required last entry */ |
| 164 | EMX_DEVICE_NULL |
| 165 | }; |
| 166 | |
| 167 | static int emx_probe(device_t); |
| 168 | static int emx_attach(device_t); |
| 169 | static int emx_detach(device_t); |
| 170 | static int emx_shutdown(device_t); |
| 171 | static int emx_suspend(device_t); |
| 172 | static int emx_resume(device_t); |
| 173 | |
| 174 | static void emx_init(void *); |
| 175 | static void emx_stop(struct emx_softc *); |
| 176 | static int emx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); |
| 177 | static void emx_start(struct ifnet *); |
| 178 | #ifdef IFPOLL_ENABLE |
| 179 | static void emx_qpoll(struct ifnet *, struct ifpoll_info *); |
| 180 | #endif |
| 181 | static void emx_watchdog(struct ifnet *); |
| 182 | static void emx_media_status(struct ifnet *, struct ifmediareq *); |
| 183 | static int emx_media_change(struct ifnet *); |
| 184 | static void emx_timer(void *); |
| 185 | static void emx_serialize(struct ifnet *, enum ifnet_serialize); |
| 186 | static void emx_deserialize(struct ifnet *, enum ifnet_serialize); |
| 187 | static int emx_tryserialize(struct ifnet *, enum ifnet_serialize); |
| 188 | #ifdef INVARIANTS |
| 189 | static void emx_serialize_assert(struct ifnet *, enum ifnet_serialize, |
| 190 | boolean_t); |
| 191 | #endif |
| 192 | |
| 193 | static void emx_intr(void *); |
| 194 | static void emx_rxeof(struct emx_softc *, int, int); |
| 195 | static void emx_txeof(struct emx_softc *); |
| 196 | static void emx_tx_collect(struct emx_softc *); |
| 197 | static void emx_tx_purge(struct emx_softc *); |
| 198 | static void emx_enable_intr(struct emx_softc *); |
| 199 | static void emx_disable_intr(struct emx_softc *); |
| 200 | |
| 201 | static int emx_dma_alloc(struct emx_softc *); |
| 202 | static void emx_dma_free(struct emx_softc *); |
| 203 | static void emx_init_tx_ring(struct emx_softc *); |
| 204 | static int emx_init_rx_ring(struct emx_softc *, struct emx_rxdata *); |
| 205 | static void emx_free_rx_ring(struct emx_softc *, struct emx_rxdata *); |
| 206 | static int emx_create_tx_ring(struct emx_softc *); |
| 207 | static int emx_create_rx_ring(struct emx_softc *, struct emx_rxdata *); |
| 208 | static void emx_destroy_tx_ring(struct emx_softc *, int); |
| 209 | static void emx_destroy_rx_ring(struct emx_softc *, |
| 210 | struct emx_rxdata *, int); |
| 211 | static int emx_newbuf(struct emx_softc *, struct emx_rxdata *, int, int); |
| 212 | static int emx_encap(struct emx_softc *, struct mbuf **); |
| 213 | static int emx_txcsum_pullup(struct emx_softc *, struct mbuf **); |
| 214 | static int emx_txcsum(struct emx_softc *, struct mbuf *, |
| 215 | uint32_t *, uint32_t *); |
| 216 | |
| 217 | static int emx_is_valid_eaddr(const uint8_t *); |
| 218 | static int emx_hw_init(struct emx_softc *); |
| 219 | static void emx_setup_ifp(struct emx_softc *); |
| 220 | static void emx_init_tx_unit(struct emx_softc *); |
| 221 | static void emx_init_rx_unit(struct emx_softc *); |
| 222 | static void emx_update_stats(struct emx_softc *); |
| 223 | static void emx_set_promisc(struct emx_softc *); |
| 224 | static void emx_disable_promisc(struct emx_softc *); |
| 225 | static void emx_set_multi(struct emx_softc *); |
| 226 | static void emx_update_link_status(struct emx_softc *); |
| 227 | static void emx_smartspeed(struct emx_softc *); |
| 228 | |
| 229 | static void emx_print_debug_info(struct emx_softc *); |
| 230 | static void emx_print_nvm_info(struct emx_softc *); |
| 231 | static void emx_print_hw_stats(struct emx_softc *); |
| 232 | |
| 233 | static int emx_sysctl_stats(SYSCTL_HANDLER_ARGS); |
| 234 | static int emx_sysctl_debug_info(SYSCTL_HANDLER_ARGS); |
| 235 | static int emx_sysctl_int_throttle(SYSCTL_HANDLER_ARGS); |
| 236 | static int emx_sysctl_int_tx_nsegs(SYSCTL_HANDLER_ARGS); |
| 237 | static void emx_add_sysctl(struct emx_softc *); |
| 238 | |
| 239 | static void emx_serialize_skipmain(struct emx_softc *); |
| 240 | static void emx_deserialize_skipmain(struct emx_softc *); |
| 241 | #ifdef IFPOLL_ENABLE |
| 242 | static int emx_tryserialize_skipmain(struct emx_softc *); |
| 243 | #endif |
| 244 | |
| 245 | /* Management and WOL Support */ |
| 246 | static void emx_get_mgmt(struct emx_softc *); |
| 247 | static void emx_rel_mgmt(struct emx_softc *); |
| 248 | static void emx_get_hw_control(struct emx_softc *); |
| 249 | static void emx_rel_hw_control(struct emx_softc *); |
| 250 | static void emx_enable_wol(device_t); |
| 251 | |
| 252 | static device_method_t emx_methods[] = { |
| 253 | /* Device interface */ |
| 254 | DEVMETHOD(device_probe, emx_probe), |
| 255 | DEVMETHOD(device_attach, emx_attach), |
| 256 | DEVMETHOD(device_detach, emx_detach), |
| 257 | DEVMETHOD(device_shutdown, emx_shutdown), |
| 258 | DEVMETHOD(device_suspend, emx_suspend), |
| 259 | DEVMETHOD(device_resume, emx_resume), |
| 260 | { 0, 0 } |
| 261 | }; |
| 262 | |
| 263 | static driver_t emx_driver = { |
| 264 | "emx", |
| 265 | emx_methods, |
| 266 | sizeof(struct emx_softc), |
| 267 | }; |
| 268 | |
| 269 | static devclass_t emx_devclass; |
| 270 | |
| 271 | DECLARE_DUMMY_MODULE(if_emx); |
| 272 | MODULE_DEPEND(emx, ig_hal, 1, 1, 1); |
| 273 | DRIVER_MODULE(if_emx, pci, emx_driver, emx_devclass, 0, 0); |
| 274 | |
| 275 | /* |
| 276 | * Tunables |
| 277 | */ |
| 278 | static int emx_int_throttle_ceil = EMX_DEFAULT_ITR; |
| 279 | static int emx_rxd = EMX_DEFAULT_RXD; |
| 280 | static int emx_txd = EMX_DEFAULT_TXD; |
| 281 | static int emx_smart_pwr_down = FALSE; |
| 282 | |
| 283 | /* Controls whether promiscuous also shows bad packets */ |
| 284 | static int emx_debug_sbp = FALSE; |
| 285 | |
| 286 | static int emx_82573_workaround = TRUE; |
| 287 | |
| 288 | TUNABLE_INT("hw.emx.int_throttle_ceil", &emx_int_throttle_ceil); |
| 289 | TUNABLE_INT("hw.emx.rxd", &emx_rxd); |
| 290 | TUNABLE_INT("hw.emx.txd", &emx_txd); |
| 291 | TUNABLE_INT("hw.emx.smart_pwr_down", &emx_smart_pwr_down); |
| 292 | TUNABLE_INT("hw.emx.sbp", &emx_debug_sbp); |
| 293 | TUNABLE_INT("hw.emx.82573_workaround", &emx_82573_workaround); |
| 294 | |
| 295 | /* Global used in WOL setup with multiport cards */ |
| 296 | static int emx_global_quad_port_a = 0; |
| 297 | |
| 298 | /* Set this to one to display debug statistics */ |
| 299 | static int emx_display_debug_stats = 0; |
| 300 | |
| 301 | #if !defined(KTR_IF_EMX) |
| 302 | #define KTR_IF_EMX KTR_ALL |
| 303 | #endif |
| 304 | KTR_INFO_MASTER(if_emx); |
| 305 | KTR_INFO(KTR_IF_EMX, if_emx, intr_beg, 0, "intr begin", 0); |
| 306 | KTR_INFO(KTR_IF_EMX, if_emx, intr_end, 1, "intr end", 0); |
| 307 | KTR_INFO(KTR_IF_EMX, if_emx, pkt_receive, 4, "rx packet", 0); |
| 308 | KTR_INFO(KTR_IF_EMX, if_emx, pkt_txqueue, 5, "tx packet", 0); |
| 309 | KTR_INFO(KTR_IF_EMX, if_emx, pkt_txclean, 6, "tx clean", 0); |
| 310 | #define logif(name) KTR_LOG(if_emx_ ## name) |
| 311 | |
| 312 | static __inline void |
| 313 | emx_setup_rxdesc(emx_rxdesc_t *rxd, const struct emx_rxbuf *rxbuf) |
| 314 | { |
| 315 | rxd->rxd_bufaddr = htole64(rxbuf->paddr); |
| 316 | /* DD bit must be cleared */ |
| 317 | rxd->rxd_staterr = 0; |
| 318 | } |
| 319 | |
| 320 | static __inline void |
| 321 | emx_rxcsum(uint32_t staterr, struct mbuf *mp) |
| 322 | { |
| 323 | /* Ignore Checksum bit is set */ |
| 324 | if (staterr & E1000_RXD_STAT_IXSM) |
| 325 | return; |
| 326 | |
| 327 | if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) == |
| 328 | E1000_RXD_STAT_IPCS) |
| 329 | mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID; |
| 330 | |
| 331 | if ((staterr & (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) == |
| 332 | E1000_RXD_STAT_TCPCS) { |
| 333 | mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID | |
| 334 | CSUM_PSEUDO_HDR | |
| 335 | CSUM_FRAG_NOT_CHECKED; |
| 336 | mp->m_pkthdr.csum_data = htons(0xffff); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | static __inline struct pktinfo * |
| 341 | emx_rssinfo(struct mbuf *m, struct pktinfo *pi, |
| 342 | uint32_t mrq, uint32_t hash, uint32_t staterr) |
| 343 | { |
| 344 | switch (mrq & EMX_RXDMRQ_RSSTYPE_MASK) { |
| 345 | case EMX_RXDMRQ_IPV4_TCP: |
| 346 | pi->pi_netisr = NETISR_IP; |
| 347 | pi->pi_flags = 0; |
| 348 | pi->pi_l3proto = IPPROTO_TCP; |
| 349 | break; |
| 350 | |
| 351 | case EMX_RXDMRQ_IPV6_TCP: |
| 352 | pi->pi_netisr = NETISR_IPV6; |
| 353 | pi->pi_flags = 0; |
| 354 | pi->pi_l3proto = IPPROTO_TCP; |
| 355 | break; |
| 356 | |
| 357 | case EMX_RXDMRQ_IPV4: |
| 358 | if (staterr & E1000_RXD_STAT_IXSM) |
| 359 | return NULL; |
| 360 | |
| 361 | if ((staterr & |
| 362 | (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) == |
| 363 | E1000_RXD_STAT_TCPCS) { |
| 364 | pi->pi_netisr = NETISR_IP; |
| 365 | pi->pi_flags = 0; |
| 366 | pi->pi_l3proto = IPPROTO_UDP; |
| 367 | break; |
| 368 | } |
| 369 | /* FALL THROUGH */ |
| 370 | default: |
| 371 | return NULL; |
| 372 | } |
| 373 | |
| 374 | m->m_flags |= M_HASH; |
| 375 | m->m_pkthdr.hash = toeplitz_hash(hash); |
| 376 | return pi; |
| 377 | } |
| 378 | |
| 379 | static int |
| 380 | emx_probe(device_t dev) |
| 381 | { |
| 382 | const struct emx_device *d; |
| 383 | uint16_t vid, did; |
| 384 | |
| 385 | vid = pci_get_vendor(dev); |
| 386 | did = pci_get_device(dev); |
| 387 | |
| 388 | for (d = emx_devices; d->desc != NULL; ++d) { |
| 389 | if (vid == d->vid && did == d->did) { |
| 390 | device_set_desc(dev, d->desc); |
| 391 | device_set_async_attach(dev, TRUE); |
| 392 | return 0; |
| 393 | } |
| 394 | } |
| 395 | return ENXIO; |
| 396 | } |
| 397 | |
| 398 | static int |
| 399 | emx_attach(device_t dev) |
| 400 | { |
| 401 | struct emx_softc *sc = device_get_softc(dev); |
| 402 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 403 | int error = 0, i; |
| 404 | uint16_t eeprom_data, device_id; |
| 405 | |
| 406 | lwkt_serialize_init(&sc->main_serialize); |
| 407 | lwkt_serialize_init(&sc->tx_serialize); |
| 408 | for (i = 0; i < EMX_NRX_RING; ++i) |
| 409 | lwkt_serialize_init(&sc->rx_data[i].rx_serialize); |
| 410 | |
| 411 | i = 0; |
| 412 | sc->serializes[i++] = &sc->main_serialize; |
| 413 | sc->serializes[i++] = &sc->tx_serialize; |
| 414 | sc->serializes[i++] = &sc->rx_data[0].rx_serialize; |
| 415 | sc->serializes[i++] = &sc->rx_data[1].rx_serialize; |
| 416 | KKASSERT(i == EMX_NSERIALIZE); |
| 417 | |
| 418 | callout_init(&sc->timer); |
| 419 | |
| 420 | sc->dev = sc->osdep.dev = dev; |
| 421 | |
| 422 | /* |
| 423 | * Determine hardware and mac type |
| 424 | */ |
| 425 | sc->hw.vendor_id = pci_get_vendor(dev); |
| 426 | sc->hw.device_id = pci_get_device(dev); |
| 427 | sc->hw.revision_id = pci_get_revid(dev); |
| 428 | sc->hw.subsystem_vendor_id = pci_get_subvendor(dev); |
| 429 | sc->hw.subsystem_device_id = pci_get_subdevice(dev); |
| 430 | |
| 431 | if (e1000_set_mac_type(&sc->hw)) |
| 432 | return ENXIO; |
| 433 | |
| 434 | /* Enable bus mastering */ |
| 435 | pci_enable_busmaster(dev); |
| 436 | |
| 437 | /* |
| 438 | * Allocate IO memory |
| 439 | */ |
| 440 | sc->memory_rid = EMX_BAR_MEM; |
| 441 | sc->memory = bus_alloc_resource_any(dev, SYS_RES_MEMORY, |
| 442 | &sc->memory_rid, RF_ACTIVE); |
| 443 | if (sc->memory == NULL) { |
| 444 | device_printf(dev, "Unable to allocate bus resource: memory\n"); |
| 445 | error = ENXIO; |
| 446 | goto fail; |
| 447 | } |
| 448 | sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->memory); |
| 449 | sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->memory); |
| 450 | |
| 451 | /* XXX This is quite goofy, it is not actually used */ |
| 452 | sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle; |
| 453 | |
| 454 | /* |
| 455 | * Allocate interrupt |
| 456 | */ |
| 457 | sc->intr_rid = 0; |
| 458 | sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->intr_rid, |
| 459 | RF_SHAREABLE | RF_ACTIVE); |
| 460 | if (sc->intr_res == NULL) { |
| 461 | device_printf(dev, "Unable to allocate bus resource: " |
| 462 | "interrupt\n"); |
| 463 | error = ENXIO; |
| 464 | goto fail; |
| 465 | } |
| 466 | |
| 467 | /* Save PCI command register for Shared Code */ |
| 468 | sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2); |
| 469 | sc->hw.back = &sc->osdep; |
| 470 | |
| 471 | /* Do Shared Code initialization */ |
| 472 | if (e1000_setup_init_funcs(&sc->hw, TRUE)) { |
| 473 | device_printf(dev, "Setup of Shared code failed\n"); |
| 474 | error = ENXIO; |
| 475 | goto fail; |
| 476 | } |
| 477 | e1000_get_bus_info(&sc->hw); |
| 478 | |
| 479 | sc->hw.mac.autoneg = EMX_DO_AUTO_NEG; |
| 480 | sc->hw.phy.autoneg_wait_to_complete = FALSE; |
| 481 | sc->hw.phy.autoneg_advertised = EMX_AUTONEG_ADV_DEFAULT; |
| 482 | |
| 483 | /* |
| 484 | * Interrupt throttle rate |
| 485 | */ |
| 486 | if (emx_int_throttle_ceil == 0) { |
| 487 | sc->int_throttle_ceil = 0; |
| 488 | } else { |
| 489 | int throttle = emx_int_throttle_ceil; |
| 490 | |
| 491 | if (throttle < 0) |
| 492 | throttle = EMX_DEFAULT_ITR; |
| 493 | |
| 494 | /* Recalculate the tunable value to get the exact frequency. */ |
| 495 | throttle = 1000000000 / 256 / throttle; |
| 496 | |
| 497 | /* Upper 16bits of ITR is reserved and should be zero */ |
| 498 | if (throttle & 0xffff0000) |
| 499 | throttle = 1000000000 / 256 / EMX_DEFAULT_ITR; |
| 500 | |
| 501 | sc->int_throttle_ceil = 1000000000 / 256 / throttle; |
| 502 | } |
| 503 | |
| 504 | e1000_init_script_state_82541(&sc->hw, TRUE); |
| 505 | e1000_set_tbi_compatibility_82543(&sc->hw, TRUE); |
| 506 | |
| 507 | /* Copper options */ |
| 508 | if (sc->hw.phy.media_type == e1000_media_type_copper) { |
| 509 | sc->hw.phy.mdix = EMX_AUTO_ALL_MODES; |
| 510 | sc->hw.phy.disable_polarity_correction = FALSE; |
| 511 | sc->hw.phy.ms_type = EMX_MASTER_SLAVE; |
| 512 | } |
| 513 | |
| 514 | /* Set the frame limits assuming standard ethernet sized frames. */ |
| 515 | sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN; |
| 516 | sc->min_frame_size = ETHER_MIN_LEN; |
| 517 | |
| 518 | /* This controls when hardware reports transmit completion status. */ |
| 519 | sc->hw.mac.report_tx_early = 1; |
| 520 | |
| 521 | #ifdef RSS |
| 522 | /* Calculate # of RX rings */ |
| 523 | if (ncpus > 1) |
| 524 | sc->rx_ring_cnt = EMX_NRX_RING; |
| 525 | else |
| 526 | #endif |
| 527 | sc->rx_ring_cnt = 1; |
| 528 | sc->rx_ring_inuse = sc->rx_ring_cnt; |
| 529 | |
| 530 | /* Allocate RX/TX rings' busdma(9) stuffs */ |
| 531 | error = emx_dma_alloc(sc); |
| 532 | if (error) |
| 533 | goto fail; |
| 534 | |
| 535 | /* Make sure we have a good EEPROM before we read from it */ |
| 536 | if (e1000_validate_nvm_checksum(&sc->hw) < 0) { |
| 537 | /* |
| 538 | * Some PCI-E parts fail the first check due to |
| 539 | * the link being in sleep state, call it again, |
| 540 | * if it fails a second time its a real issue. |
| 541 | */ |
| 542 | if (e1000_validate_nvm_checksum(&sc->hw) < 0) { |
| 543 | device_printf(dev, |
| 544 | "The EEPROM Checksum Is Not Valid\n"); |
| 545 | error = EIO; |
| 546 | goto fail; |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | /* Initialize the hardware */ |
| 551 | error = emx_hw_init(sc); |
| 552 | if (error) { |
| 553 | device_printf(dev, "Unable to initialize the hardware\n"); |
| 554 | goto fail; |
| 555 | } |
| 556 | |
| 557 | /* Copy the permanent MAC address out of the EEPROM */ |
| 558 | if (e1000_read_mac_addr(&sc->hw) < 0) { |
| 559 | device_printf(dev, "EEPROM read error while reading MAC" |
| 560 | " address\n"); |
| 561 | error = EIO; |
| 562 | goto fail; |
| 563 | } |
| 564 | if (!emx_is_valid_eaddr(sc->hw.mac.addr)) { |
| 565 | device_printf(dev, "Invalid MAC address\n"); |
| 566 | error = EIO; |
| 567 | goto fail; |
| 568 | } |
| 569 | |
| 570 | /* Manually turn off all interrupts */ |
| 571 | E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff); |
| 572 | |
| 573 | /* Setup OS specific network interface */ |
| 574 | emx_setup_ifp(sc); |
| 575 | |
| 576 | /* Add sysctl tree, must after emx_setup_ifp() */ |
| 577 | emx_add_sysctl(sc); |
| 578 | |
| 579 | /* Initialize statistics */ |
| 580 | emx_update_stats(sc); |
| 581 | |
| 582 | sc->hw.mac.get_link_status = 1; |
| 583 | emx_update_link_status(sc); |
| 584 | |
| 585 | /* Indicate SOL/IDER usage */ |
| 586 | if (e1000_check_reset_block(&sc->hw)) { |
| 587 | device_printf(dev, |
| 588 | "PHY reset is blocked due to SOL/IDER session.\n"); |
| 589 | } |
| 590 | |
| 591 | /* Determine if we have to control management hardware */ |
| 592 | sc->has_manage = e1000_enable_mng_pass_thru(&sc->hw); |
| 593 | |
| 594 | /* |
| 595 | * Setup Wake-on-Lan |
| 596 | */ |
| 597 | switch (sc->hw.mac.type) { |
| 598 | case e1000_82571: |
| 599 | case e1000_80003es2lan: |
| 600 | if (sc->hw.bus.func == 1) { |
| 601 | e1000_read_nvm(&sc->hw, |
| 602 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
| 603 | } else { |
| 604 | e1000_read_nvm(&sc->hw, |
| 605 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
| 606 | } |
| 607 | eeprom_data &= EMX_EEPROM_APME; |
| 608 | break; |
| 609 | |
| 610 | default: |
| 611 | /* APME bit in EEPROM is mapped to WUC.APME */ |
| 612 | eeprom_data = |
| 613 | E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME; |
| 614 | break; |
| 615 | } |
| 616 | if (eeprom_data) |
| 617 | sc->wol = E1000_WUFC_MAG; |
| 618 | /* |
| 619 | * We have the eeprom settings, now apply the special cases |
| 620 | * where the eeprom may be wrong or the board won't support |
| 621 | * wake on lan on a particular port |
| 622 | */ |
| 623 | device_id = pci_get_device(dev); |
| 624 | switch (device_id) { |
| 625 | case E1000_DEV_ID_82571EB_FIBER: |
| 626 | /* |
| 627 | * Wake events only supported on port A for dual fiber |
| 628 | * regardless of eeprom setting |
| 629 | */ |
| 630 | if (E1000_READ_REG(&sc->hw, E1000_STATUS) & |
| 631 | E1000_STATUS_FUNC_1) |
| 632 | sc->wol = 0; |
| 633 | break; |
| 634 | |
| 635 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
| 636 | case E1000_DEV_ID_82571EB_QUAD_FIBER: |
| 637 | case E1000_DEV_ID_82571EB_QUAD_COPPER_LP: |
| 638 | /* if quad port sc, disable WoL on all but port A */ |
| 639 | if (emx_global_quad_port_a != 0) |
| 640 | sc->wol = 0; |
| 641 | /* Reset for multiple quad port adapters */ |
| 642 | if (++emx_global_quad_port_a == 4) |
| 643 | emx_global_quad_port_a = 0; |
| 644 | break; |
| 645 | } |
| 646 | |
| 647 | /* XXX disable wol */ |
| 648 | sc->wol = 0; |
| 649 | |
| 650 | sc->spare_tx_desc = EMX_TX_SPARE; |
| 651 | |
| 652 | /* |
| 653 | * Keep following relationship between spare_tx_desc, oact_tx_desc |
| 654 | * and tx_int_nsegs: |
| 655 | * (spare_tx_desc + EMX_TX_RESERVED) <= |
| 656 | * oact_tx_desc <= EMX_TX_OACTIVE_MAX <= tx_int_nsegs |
| 657 | */ |
| 658 | sc->oact_tx_desc = sc->num_tx_desc / 8; |
| 659 | if (sc->oact_tx_desc > EMX_TX_OACTIVE_MAX) |
| 660 | sc->oact_tx_desc = EMX_TX_OACTIVE_MAX; |
| 661 | if (sc->oact_tx_desc < sc->spare_tx_desc + EMX_TX_RESERVED) |
| 662 | sc->oact_tx_desc = sc->spare_tx_desc + EMX_TX_RESERVED; |
| 663 | |
| 664 | sc->tx_int_nsegs = sc->num_tx_desc / 16; |
| 665 | if (sc->tx_int_nsegs < sc->oact_tx_desc) |
| 666 | sc->tx_int_nsegs = sc->oact_tx_desc; |
| 667 | |
| 668 | error = bus_setup_intr(dev, sc->intr_res, INTR_MPSAFE, emx_intr, sc, |
| 669 | &sc->intr_tag, &sc->main_serialize); |
| 670 | if (error) { |
| 671 | device_printf(dev, "Failed to register interrupt handler"); |
| 672 | ether_ifdetach(&sc->arpcom.ac_if); |
| 673 | goto fail; |
| 674 | } |
| 675 | |
| 676 | ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->intr_res)); |
| 677 | KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus); |
| 678 | return (0); |
| 679 | fail: |
| 680 | emx_detach(dev); |
| 681 | return (error); |
| 682 | } |
| 683 | |
| 684 | static int |
| 685 | emx_detach(device_t dev) |
| 686 | { |
| 687 | struct emx_softc *sc = device_get_softc(dev); |
| 688 | |
| 689 | if (device_is_attached(dev)) { |
| 690 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 691 | |
| 692 | ifnet_serialize_all(ifp); |
| 693 | |
| 694 | emx_stop(sc); |
| 695 | |
| 696 | e1000_phy_hw_reset(&sc->hw); |
| 697 | |
| 698 | emx_rel_mgmt(sc); |
| 699 | |
| 700 | if (sc->hw.mac.type == e1000_82573 && |
| 701 | e1000_check_mng_mode(&sc->hw)) |
| 702 | emx_rel_hw_control(sc); |
| 703 | |
| 704 | if (sc->wol) { |
| 705 | E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN); |
| 706 | E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol); |
| 707 | emx_enable_wol(dev); |
| 708 | } |
| 709 | |
| 710 | bus_teardown_intr(dev, sc->intr_res, sc->intr_tag); |
| 711 | |
| 712 | ifnet_deserialize_all(ifp); |
| 713 | |
| 714 | ether_ifdetach(ifp); |
| 715 | } |
| 716 | bus_generic_detach(dev); |
| 717 | |
| 718 | if (sc->intr_res != NULL) { |
| 719 | bus_release_resource(dev, SYS_RES_IRQ, sc->intr_rid, |
| 720 | sc->intr_res); |
| 721 | } |
| 722 | |
| 723 | if (sc->memory != NULL) { |
| 724 | bus_release_resource(dev, SYS_RES_MEMORY, sc->memory_rid, |
| 725 | sc->memory); |
| 726 | } |
| 727 | |
| 728 | emx_dma_free(sc); |
| 729 | |
| 730 | /* Free sysctl tree */ |
| 731 | if (sc->sysctl_tree != NULL) |
| 732 | sysctl_ctx_free(&sc->sysctl_ctx); |
| 733 | |
| 734 | return (0); |
| 735 | } |
| 736 | |
| 737 | static int |
| 738 | emx_shutdown(device_t dev) |
| 739 | { |
| 740 | return emx_suspend(dev); |
| 741 | } |
| 742 | |
| 743 | static int |
| 744 | emx_suspend(device_t dev) |
| 745 | { |
| 746 | struct emx_softc *sc = device_get_softc(dev); |
| 747 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 748 | |
| 749 | ifnet_serialize_all(ifp); |
| 750 | |
| 751 | emx_stop(sc); |
| 752 | |
| 753 | emx_rel_mgmt(sc); |
| 754 | |
| 755 | if (sc->hw.mac.type == e1000_82573 && |
| 756 | e1000_check_mng_mode(&sc->hw)) |
| 757 | emx_rel_hw_control(sc); |
| 758 | |
| 759 | if (sc->wol) { |
| 760 | E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN); |
| 761 | E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol); |
| 762 | emx_enable_wol(dev); |
| 763 | } |
| 764 | |
| 765 | ifnet_deserialize_all(ifp); |
| 766 | |
| 767 | return bus_generic_suspend(dev); |
| 768 | } |
| 769 | |
| 770 | static int |
| 771 | emx_resume(device_t dev) |
| 772 | { |
| 773 | struct emx_softc *sc = device_get_softc(dev); |
| 774 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 775 | |
| 776 | ifnet_serialize_all(ifp); |
| 777 | |
| 778 | emx_init(sc); |
| 779 | emx_get_mgmt(sc); |
| 780 | if_devstart(ifp); |
| 781 | |
| 782 | ifnet_deserialize_all(ifp); |
| 783 | |
| 784 | return bus_generic_resume(dev); |
| 785 | } |
| 786 | |
| 787 | static void |
| 788 | emx_start(struct ifnet *ifp) |
| 789 | { |
| 790 | struct emx_softc *sc = ifp->if_softc; |
| 791 | struct mbuf *m_head; |
| 792 | |
| 793 | ASSERT_SERIALIZED(&sc->tx_serialize); |
| 794 | |
| 795 | if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) |
| 796 | return; |
| 797 | |
| 798 | if (!sc->link_active) { |
| 799 | ifq_purge(&ifp->if_snd); |
| 800 | return; |
| 801 | } |
| 802 | |
| 803 | while (!ifq_is_empty(&ifp->if_snd)) { |
| 804 | /* Now do we at least have a minimal? */ |
| 805 | if (EMX_IS_OACTIVE(sc)) { |
| 806 | emx_tx_collect(sc); |
| 807 | if (EMX_IS_OACTIVE(sc)) { |
| 808 | ifp->if_flags |= IFF_OACTIVE; |
| 809 | sc->no_tx_desc_avail1++; |
| 810 | break; |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | logif(pkt_txqueue); |
| 815 | m_head = ifq_dequeue(&ifp->if_snd, NULL); |
| 816 | if (m_head == NULL) |
| 817 | break; |
| 818 | |
| 819 | if (emx_encap(sc, &m_head)) { |
| 820 | ifp->if_oerrors++; |
| 821 | emx_tx_collect(sc); |
| 822 | continue; |
| 823 | } |
| 824 | |
| 825 | /* Send a copy of the frame to the BPF listener */ |
| 826 | ETHER_BPF_MTAP(ifp, m_head); |
| 827 | |
| 828 | /* Set timeout in case hardware has problems transmitting. */ |
| 829 | ifp->if_timer = EMX_TX_TIMEOUT; |
| 830 | } |
| 831 | } |
| 832 | |
| 833 | static int |
| 834 | emx_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) |
| 835 | { |
| 836 | struct emx_softc *sc = ifp->if_softc; |
| 837 | struct ifreq *ifr = (struct ifreq *)data; |
| 838 | uint16_t eeprom_data = 0; |
| 839 | int max_frame_size, mask, reinit; |
| 840 | int error = 0; |
| 841 | |
| 842 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 843 | |
| 844 | switch (command) { |
| 845 | case SIOCSIFMTU: |
| 846 | switch (sc->hw.mac.type) { |
| 847 | case e1000_82573: |
| 848 | /* |
| 849 | * 82573 only supports jumbo frames |
| 850 | * if ASPM is disabled. |
| 851 | */ |
| 852 | e1000_read_nvm(&sc->hw, NVM_INIT_3GIO_3, 1, |
| 853 | &eeprom_data); |
| 854 | if (eeprom_data & NVM_WORD1A_ASPM_MASK) { |
| 855 | max_frame_size = ETHER_MAX_LEN; |
| 856 | break; |
| 857 | } |
| 858 | /* FALL THROUGH */ |
| 859 | |
| 860 | /* Limit Jumbo Frame size */ |
| 861 | case e1000_82571: |
| 862 | case e1000_82572: |
| 863 | case e1000_82574: |
| 864 | case e1000_80003es2lan: |
| 865 | max_frame_size = 9234; |
| 866 | break; |
| 867 | |
| 868 | default: |
| 869 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
| 870 | break; |
| 871 | } |
| 872 | if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN - |
| 873 | ETHER_CRC_LEN) { |
| 874 | error = EINVAL; |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | ifp->if_mtu = ifr->ifr_mtu; |
| 879 | sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + |
| 880 | ETHER_CRC_LEN; |
| 881 | |
| 882 | if (ifp->if_flags & IFF_RUNNING) |
| 883 | emx_init(sc); |
| 884 | break; |
| 885 | |
| 886 | case SIOCSIFFLAGS: |
| 887 | if (ifp->if_flags & IFF_UP) { |
| 888 | if ((ifp->if_flags & IFF_RUNNING)) { |
| 889 | if ((ifp->if_flags ^ sc->if_flags) & |
| 890 | (IFF_PROMISC | IFF_ALLMULTI)) { |
| 891 | emx_disable_promisc(sc); |
| 892 | emx_set_promisc(sc); |
| 893 | } |
| 894 | } else { |
| 895 | emx_init(sc); |
| 896 | } |
| 897 | } else if (ifp->if_flags & IFF_RUNNING) { |
| 898 | emx_stop(sc); |
| 899 | } |
| 900 | sc->if_flags = ifp->if_flags; |
| 901 | break; |
| 902 | |
| 903 | case SIOCADDMULTI: |
| 904 | case SIOCDELMULTI: |
| 905 | if (ifp->if_flags & IFF_RUNNING) { |
| 906 | emx_disable_intr(sc); |
| 907 | emx_set_multi(sc); |
| 908 | #ifdef IFPOLL_ENABLE |
| 909 | if (!(ifp->if_flags & IFF_NPOLLING)) |
| 910 | #endif |
| 911 | emx_enable_intr(sc); |
| 912 | } |
| 913 | break; |
| 914 | |
| 915 | case SIOCSIFMEDIA: |
| 916 | /* Check SOL/IDER usage */ |
| 917 | if (e1000_check_reset_block(&sc->hw)) { |
| 918 | device_printf(sc->dev, "Media change is" |
| 919 | " blocked due to SOL/IDER session.\n"); |
| 920 | break; |
| 921 | } |
| 922 | /* FALL THROUGH */ |
| 923 | |
| 924 | case SIOCGIFMEDIA: |
| 925 | error = ifmedia_ioctl(ifp, ifr, &sc->media, command); |
| 926 | break; |
| 927 | |
| 928 | case SIOCSIFCAP: |
| 929 | reinit = 0; |
| 930 | mask = ifr->ifr_reqcap ^ ifp->if_capenable; |
| 931 | if (mask & IFCAP_HWCSUM) { |
| 932 | ifp->if_capenable ^= (mask & IFCAP_HWCSUM); |
| 933 | reinit = 1; |
| 934 | } |
| 935 | if (mask & IFCAP_VLAN_HWTAGGING) { |
| 936 | ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; |
| 937 | reinit = 1; |
| 938 | } |
| 939 | if (mask & IFCAP_RSS) { |
| 940 | ifp->if_capenable ^= IFCAP_RSS; |
| 941 | reinit = 1; |
| 942 | } |
| 943 | if (reinit && (ifp->if_flags & IFF_RUNNING)) |
| 944 | emx_init(sc); |
| 945 | break; |
| 946 | |
| 947 | default: |
| 948 | error = ether_ioctl(ifp, command, data); |
| 949 | break; |
| 950 | } |
| 951 | return (error); |
| 952 | } |
| 953 | |
| 954 | static void |
| 955 | emx_watchdog(struct ifnet *ifp) |
| 956 | { |
| 957 | struct emx_softc *sc = ifp->if_softc; |
| 958 | |
| 959 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 960 | |
| 961 | /* |
| 962 | * The timer is set to 5 every time start queues a packet. |
| 963 | * Then txeof keeps resetting it as long as it cleans at |
| 964 | * least one descriptor. |
| 965 | * Finally, anytime all descriptors are clean the timer is |
| 966 | * set to 0. |
| 967 | */ |
| 968 | |
| 969 | if (E1000_READ_REG(&sc->hw, E1000_TDT(0)) == |
| 970 | E1000_READ_REG(&sc->hw, E1000_TDH(0))) { |
| 971 | /* |
| 972 | * If we reach here, all TX jobs are completed and |
| 973 | * the TX engine should have been idled for some time. |
| 974 | * We don't need to call if_devstart() here. |
| 975 | */ |
| 976 | ifp->if_flags &= ~IFF_OACTIVE; |
| 977 | ifp->if_timer = 0; |
| 978 | return; |
| 979 | } |
| 980 | |
| 981 | /* |
| 982 | * If we are in this routine because of pause frames, then |
| 983 | * don't reset the hardware. |
| 984 | */ |
| 985 | if (E1000_READ_REG(&sc->hw, E1000_STATUS) & E1000_STATUS_TXOFF) { |
| 986 | ifp->if_timer = EMX_TX_TIMEOUT; |
| 987 | return; |
| 988 | } |
| 989 | |
| 990 | if (e1000_check_for_link(&sc->hw) == 0) |
| 991 | if_printf(ifp, "watchdog timeout -- resetting\n"); |
| 992 | |
| 993 | ifp->if_oerrors++; |
| 994 | sc->watchdog_events++; |
| 995 | |
| 996 | emx_init(sc); |
| 997 | |
| 998 | if (!ifq_is_empty(&ifp->if_snd)) |
| 999 | if_devstart(ifp); |
| 1000 | } |
| 1001 | |
| 1002 | static void |
| 1003 | emx_init(void *xsc) |
| 1004 | { |
| 1005 | struct emx_softc *sc = xsc; |
| 1006 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1007 | device_t dev = sc->dev; |
| 1008 | uint32_t pba; |
| 1009 | int i; |
| 1010 | |
| 1011 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 1012 | |
| 1013 | emx_stop(sc); |
| 1014 | |
| 1015 | /* |
| 1016 | * Packet Buffer Allocation (PBA) |
| 1017 | * Writing PBA sets the receive portion of the buffer |
| 1018 | * the remainder is used for the transmit buffer. |
| 1019 | */ |
| 1020 | switch (sc->hw.mac.type) { |
| 1021 | /* Total Packet Buffer on these is 48K */ |
| 1022 | case e1000_82571: |
| 1023 | case e1000_82572: |
| 1024 | case e1000_80003es2lan: |
| 1025 | pba = E1000_PBA_32K; /* 32K for Rx, 16K for Tx */ |
| 1026 | break; |
| 1027 | |
| 1028 | case e1000_82573: /* 82573: Total Packet Buffer is 32K */ |
| 1029 | pba = E1000_PBA_12K; /* 12K for Rx, 20K for Tx */ |
| 1030 | break; |
| 1031 | |
| 1032 | case e1000_82574: |
| 1033 | pba = E1000_PBA_20K; /* 20K for Rx, 20K for Tx */ |
| 1034 | break; |
| 1035 | |
| 1036 | default: |
| 1037 | /* Devices before 82547 had a Packet Buffer of 64K. */ |
| 1038 | if (sc->max_frame_size > 8192) |
| 1039 | pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */ |
| 1040 | else |
| 1041 | pba = E1000_PBA_48K; /* 48K for Rx, 16K for Tx */ |
| 1042 | } |
| 1043 | E1000_WRITE_REG(&sc->hw, E1000_PBA, pba); |
| 1044 | |
| 1045 | /* Get the latest mac address, User can use a LAA */ |
| 1046 | bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN); |
| 1047 | |
| 1048 | /* Put the address into the Receive Address Array */ |
| 1049 | e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0); |
| 1050 | |
| 1051 | /* |
| 1052 | * With the 82571 sc, RAR[0] may be overwritten |
| 1053 | * when the other port is reset, we make a duplicate |
| 1054 | * in RAR[14] for that eventuality, this assures |
| 1055 | * the interface continues to function. |
| 1056 | */ |
| 1057 | if (sc->hw.mac.type == e1000_82571) { |
| 1058 | e1000_set_laa_state_82571(&sc->hw, TRUE); |
| 1059 | e1000_rar_set(&sc->hw, sc->hw.mac.addr, |
| 1060 | E1000_RAR_ENTRIES - 1); |
| 1061 | } |
| 1062 | |
| 1063 | /* Initialize the hardware */ |
| 1064 | if (emx_hw_init(sc)) { |
| 1065 | device_printf(dev, "Unable to initialize the hardware\n"); |
| 1066 | /* XXX emx_stop()? */ |
| 1067 | return; |
| 1068 | } |
| 1069 | emx_update_link_status(sc); |
| 1070 | |
| 1071 | /* Setup VLAN support, basic and offload if available */ |
| 1072 | E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN); |
| 1073 | |
| 1074 | if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) { |
| 1075 | uint32_t ctrl; |
| 1076 | |
| 1077 | ctrl = E1000_READ_REG(&sc->hw, E1000_CTRL); |
| 1078 | ctrl |= E1000_CTRL_VME; |
| 1079 | E1000_WRITE_REG(&sc->hw, E1000_CTRL, ctrl); |
| 1080 | } |
| 1081 | |
| 1082 | /* Set hardware offload abilities */ |
| 1083 | if (ifp->if_capenable & IFCAP_TXCSUM) |
| 1084 | ifp->if_hwassist = EMX_CSUM_FEATURES; |
| 1085 | else |
| 1086 | ifp->if_hwassist = 0; |
| 1087 | |
| 1088 | /* Configure for OS presence */ |
| 1089 | emx_get_mgmt(sc); |
| 1090 | |
| 1091 | /* Prepare transmit descriptors and buffers */ |
| 1092 | emx_init_tx_ring(sc); |
| 1093 | emx_init_tx_unit(sc); |
| 1094 | |
| 1095 | /* Setup Multicast table */ |
| 1096 | emx_set_multi(sc); |
| 1097 | |
| 1098 | /* |
| 1099 | * Adjust # of RX ring to be used based on IFCAP_RSS |
| 1100 | */ |
| 1101 | if (ifp->if_capenable & IFCAP_RSS) |
| 1102 | sc->rx_ring_inuse = sc->rx_ring_cnt; |
| 1103 | else |
| 1104 | sc->rx_ring_inuse = 1; |
| 1105 | |
| 1106 | /* Prepare receive descriptors and buffers */ |
| 1107 | for (i = 0; i < sc->rx_ring_inuse; ++i) { |
| 1108 | if (emx_init_rx_ring(sc, &sc->rx_data[i])) { |
| 1109 | device_printf(dev, |
| 1110 | "Could not setup receive structures\n"); |
| 1111 | emx_stop(sc); |
| 1112 | return; |
| 1113 | } |
| 1114 | } |
| 1115 | emx_init_rx_unit(sc); |
| 1116 | |
| 1117 | /* Don't lose promiscuous settings */ |
| 1118 | emx_set_promisc(sc); |
| 1119 | |
| 1120 | ifp->if_flags |= IFF_RUNNING; |
| 1121 | ifp->if_flags &= ~IFF_OACTIVE; |
| 1122 | |
| 1123 | callout_reset(&sc->timer, hz, emx_timer, sc); |
| 1124 | e1000_clear_hw_cntrs_base_generic(&sc->hw); |
| 1125 | |
| 1126 | /* MSI/X configuration for 82574 */ |
| 1127 | if (sc->hw.mac.type == e1000_82574) { |
| 1128 | int tmp; |
| 1129 | |
| 1130 | tmp = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT); |
| 1131 | tmp |= E1000_CTRL_EXT_PBA_CLR; |
| 1132 | E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT, tmp); |
| 1133 | /* |
| 1134 | * Set the IVAR - interrupt vector routing. |
| 1135 | * Each nibble represents a vector, high bit |
| 1136 | * is enable, other 3 bits are the MSIX table |
| 1137 | * entry, we map RXQ0 to 0, TXQ0 to 1, and |
| 1138 | * Link (other) to 2, hence the magic number. |
| 1139 | */ |
| 1140 | E1000_WRITE_REG(&sc->hw, E1000_IVAR, 0x800A0908); |
| 1141 | } |
| 1142 | |
| 1143 | #ifdef IFPOLL_ENABLE |
| 1144 | /* |
| 1145 | * Only enable interrupts if we are not polling, make sure |
| 1146 | * they are off otherwise. |
| 1147 | */ |
| 1148 | if (ifp->if_flags & IFF_NPOLLING) |
| 1149 | emx_disable_intr(sc); |
| 1150 | else |
| 1151 | #endif /* IFPOLL_ENABLE */ |
| 1152 | emx_enable_intr(sc); |
| 1153 | |
| 1154 | /* Don't reset the phy next time init gets called */ |
| 1155 | sc->hw.phy.reset_disable = TRUE; |
| 1156 | } |
| 1157 | |
| 1158 | static void |
| 1159 | emx_intr(void *xsc) |
| 1160 | { |
| 1161 | struct emx_softc *sc = xsc; |
| 1162 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1163 | uint32_t reg_icr; |
| 1164 | |
| 1165 | logif(intr_beg); |
| 1166 | ASSERT_SERIALIZED(&sc->main_serialize); |
| 1167 | |
| 1168 | reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR); |
| 1169 | |
| 1170 | if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0) { |
| 1171 | logif(intr_end); |
| 1172 | return; |
| 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * XXX: some laptops trigger several spurious interrupts |
| 1177 | * on emx(4) when in the resume cycle. The ICR register |
| 1178 | * reports all-ones value in this case. Processing such |
| 1179 | * interrupts would lead to a freeze. I don't know why. |
| 1180 | */ |
| 1181 | if (reg_icr == 0xffffffff) { |
| 1182 | logif(intr_end); |
| 1183 | return; |
| 1184 | } |
| 1185 | |
| 1186 | if (ifp->if_flags & IFF_RUNNING) { |
| 1187 | if (reg_icr & |
| 1188 | (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) { |
| 1189 | int i; |
| 1190 | |
| 1191 | for (i = 0; i < sc->rx_ring_inuse; ++i) { |
| 1192 | lwkt_serialize_enter( |
| 1193 | &sc->rx_data[i].rx_serialize); |
| 1194 | emx_rxeof(sc, i, -1); |
| 1195 | lwkt_serialize_exit( |
| 1196 | &sc->rx_data[i].rx_serialize); |
| 1197 | } |
| 1198 | } |
| 1199 | if (reg_icr & E1000_ICR_TXDW) { |
| 1200 | lwkt_serialize_enter(&sc->tx_serialize); |
| 1201 | emx_txeof(sc); |
| 1202 | if (!ifq_is_empty(&ifp->if_snd)) |
| 1203 | if_devstart(ifp); |
| 1204 | lwkt_serialize_exit(&sc->tx_serialize); |
| 1205 | } |
| 1206 | } |
| 1207 | |
| 1208 | /* Link status change */ |
| 1209 | if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 1210 | emx_serialize_skipmain(sc); |
| 1211 | |
| 1212 | callout_stop(&sc->timer); |
| 1213 | sc->hw.mac.get_link_status = 1; |
| 1214 | emx_update_link_status(sc); |
| 1215 | |
| 1216 | /* Deal with TX cruft when link lost */ |
| 1217 | emx_tx_purge(sc); |
| 1218 | |
| 1219 | callout_reset(&sc->timer, hz, emx_timer, sc); |
| 1220 | |
| 1221 | emx_deserialize_skipmain(sc); |
| 1222 | } |
| 1223 | |
| 1224 | if (reg_icr & E1000_ICR_RXO) |
| 1225 | sc->rx_overruns++; |
| 1226 | |
| 1227 | logif(intr_end); |
| 1228 | } |
| 1229 | |
| 1230 | static void |
| 1231 | emx_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) |
| 1232 | { |
| 1233 | struct emx_softc *sc = ifp->if_softc; |
| 1234 | |
| 1235 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 1236 | |
| 1237 | emx_update_link_status(sc); |
| 1238 | |
| 1239 | ifmr->ifm_status = IFM_AVALID; |
| 1240 | ifmr->ifm_active = IFM_ETHER; |
| 1241 | |
| 1242 | if (!sc->link_active) |
| 1243 | return; |
| 1244 | |
| 1245 | ifmr->ifm_status |= IFM_ACTIVE; |
| 1246 | |
| 1247 | if (sc->hw.phy.media_type == e1000_media_type_fiber || |
| 1248 | sc->hw.phy.media_type == e1000_media_type_internal_serdes) { |
| 1249 | ifmr->ifm_active |= IFM_1000_SX | IFM_FDX; |
| 1250 | } else { |
| 1251 | switch (sc->link_speed) { |
| 1252 | case 10: |
| 1253 | ifmr->ifm_active |= IFM_10_T; |
| 1254 | break; |
| 1255 | case 100: |
| 1256 | ifmr->ifm_active |= IFM_100_TX; |
| 1257 | break; |
| 1258 | |
| 1259 | case 1000: |
| 1260 | ifmr->ifm_active |= IFM_1000_T; |
| 1261 | break; |
| 1262 | } |
| 1263 | if (sc->link_duplex == FULL_DUPLEX) |
| 1264 | ifmr->ifm_active |= IFM_FDX; |
| 1265 | else |
| 1266 | ifmr->ifm_active |= IFM_HDX; |
| 1267 | } |
| 1268 | } |
| 1269 | |
| 1270 | static int |
| 1271 | emx_media_change(struct ifnet *ifp) |
| 1272 | { |
| 1273 | struct emx_softc *sc = ifp->if_softc; |
| 1274 | struct ifmedia *ifm = &sc->media; |
| 1275 | |
| 1276 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 1277 | |
| 1278 | if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) |
| 1279 | return (EINVAL); |
| 1280 | |
| 1281 | switch (IFM_SUBTYPE(ifm->ifm_media)) { |
| 1282 | case IFM_AUTO: |
| 1283 | sc->hw.mac.autoneg = EMX_DO_AUTO_NEG; |
| 1284 | sc->hw.phy.autoneg_advertised = EMX_AUTONEG_ADV_DEFAULT; |
| 1285 | break; |
| 1286 | |
| 1287 | case IFM_1000_LX: |
| 1288 | case IFM_1000_SX: |
| 1289 | case IFM_1000_T: |
| 1290 | sc->hw.mac.autoneg = EMX_DO_AUTO_NEG; |
| 1291 | sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; |
| 1292 | break; |
| 1293 | |
| 1294 | case IFM_100_TX: |
| 1295 | sc->hw.mac.autoneg = FALSE; |
| 1296 | sc->hw.phy.autoneg_advertised = 0; |
| 1297 | if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) |
| 1298 | sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL; |
| 1299 | else |
| 1300 | sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF; |
| 1301 | break; |
| 1302 | |
| 1303 | case IFM_10_T: |
| 1304 | sc->hw.mac.autoneg = FALSE; |
| 1305 | sc->hw.phy.autoneg_advertised = 0; |
| 1306 | if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) |
| 1307 | sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL; |
| 1308 | else |
| 1309 | sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF; |
| 1310 | break; |
| 1311 | |
| 1312 | default: |
| 1313 | if_printf(ifp, "Unsupported media type\n"); |
| 1314 | break; |
| 1315 | } |
| 1316 | |
| 1317 | /* |
| 1318 | * As the speed/duplex settings my have changed we need to |
| 1319 | * reset the PHY. |
| 1320 | */ |
| 1321 | sc->hw.phy.reset_disable = FALSE; |
| 1322 | |
| 1323 | emx_init(sc); |
| 1324 | |
| 1325 | return (0); |
| 1326 | } |
| 1327 | |
| 1328 | static int |
| 1329 | emx_encap(struct emx_softc *sc, struct mbuf **m_headp) |
| 1330 | { |
| 1331 | bus_dma_segment_t segs[EMX_MAX_SCATTER]; |
| 1332 | bus_dmamap_t map; |
| 1333 | struct emx_txbuf *tx_buffer, *tx_buffer_mapped; |
| 1334 | struct e1000_tx_desc *ctxd = NULL; |
| 1335 | struct mbuf *m_head = *m_headp; |
| 1336 | uint32_t txd_upper, txd_lower, cmd = 0; |
| 1337 | int maxsegs, nsegs, i, j, first, last = 0, error; |
| 1338 | |
| 1339 | if (m_head->m_len < EMX_TXCSUM_MINHL && |
| 1340 | (m_head->m_flags & EMX_CSUM_FEATURES)) { |
| 1341 | /* |
| 1342 | * Make sure that ethernet header and ip.ip_hl are in |
| 1343 | * contiguous memory, since if TXCSUM is enabled, later |
| 1344 | * TX context descriptor's setup need to access ip.ip_hl. |
| 1345 | */ |
| 1346 | error = emx_txcsum_pullup(sc, m_headp); |
| 1347 | if (error) { |
| 1348 | KKASSERT(*m_headp == NULL); |
| 1349 | return error; |
| 1350 | } |
| 1351 | m_head = *m_headp; |
| 1352 | } |
| 1353 | |
| 1354 | txd_upper = txd_lower = 0; |
| 1355 | |
| 1356 | /* |
| 1357 | * Capture the first descriptor index, this descriptor |
| 1358 | * will have the index of the EOP which is the only one |
| 1359 | * that now gets a DONE bit writeback. |
| 1360 | */ |
| 1361 | first = sc->next_avail_tx_desc; |
| 1362 | tx_buffer = &sc->tx_buf[first]; |
| 1363 | tx_buffer_mapped = tx_buffer; |
| 1364 | map = tx_buffer->map; |
| 1365 | |
| 1366 | maxsegs = sc->num_tx_desc_avail - EMX_TX_RESERVED; |
| 1367 | KASSERT(maxsegs >= sc->spare_tx_desc, ("not enough spare TX desc\n")); |
| 1368 | if (maxsegs > EMX_MAX_SCATTER) |
| 1369 | maxsegs = EMX_MAX_SCATTER; |
| 1370 | |
| 1371 | error = bus_dmamap_load_mbuf_defrag(sc->txtag, map, m_headp, |
| 1372 | segs, maxsegs, &nsegs, BUS_DMA_NOWAIT); |
| 1373 | if (error) { |
| 1374 | if (error == ENOBUFS) |
| 1375 | sc->mbuf_alloc_failed++; |
| 1376 | else |
| 1377 | sc->no_tx_dma_setup++; |
| 1378 | |
| 1379 | m_freem(*m_headp); |
| 1380 | *m_headp = NULL; |
| 1381 | return error; |
| 1382 | } |
| 1383 | bus_dmamap_sync(sc->txtag, map, BUS_DMASYNC_PREWRITE); |
| 1384 | |
| 1385 | m_head = *m_headp; |
| 1386 | sc->tx_nsegs += nsegs; |
| 1387 | |
| 1388 | if (m_head->m_pkthdr.csum_flags & EMX_CSUM_FEATURES) { |
| 1389 | /* TX csum offloading will consume one TX desc */ |
| 1390 | sc->tx_nsegs += emx_txcsum(sc, m_head, &txd_upper, &txd_lower); |
| 1391 | } |
| 1392 | i = sc->next_avail_tx_desc; |
| 1393 | |
| 1394 | /* Set up our transmit descriptors */ |
| 1395 | for (j = 0; j < nsegs; j++) { |
| 1396 | tx_buffer = &sc->tx_buf[i]; |
| 1397 | ctxd = &sc->tx_desc_base[i]; |
| 1398 | |
| 1399 | ctxd->buffer_addr = htole64(segs[j].ds_addr); |
| 1400 | ctxd->lower.data = htole32(E1000_TXD_CMD_IFCS | |
| 1401 | txd_lower | segs[j].ds_len); |
| 1402 | ctxd->upper.data = htole32(txd_upper); |
| 1403 | |
| 1404 | last = i; |
| 1405 | if (++i == sc->num_tx_desc) |
| 1406 | i = 0; |
| 1407 | } |
| 1408 | |
| 1409 | sc->next_avail_tx_desc = i; |
| 1410 | |
| 1411 | KKASSERT(sc->num_tx_desc_avail > nsegs); |
| 1412 | sc->num_tx_desc_avail -= nsegs; |
| 1413 | |
| 1414 | /* Handle VLAN tag */ |
| 1415 | if (m_head->m_flags & M_VLANTAG) { |
| 1416 | /* Set the vlan id. */ |
| 1417 | ctxd->upper.fields.special = |
| 1418 | htole16(m_head->m_pkthdr.ether_vlantag); |
| 1419 | |
| 1420 | /* Tell hardware to add tag */ |
| 1421 | ctxd->lower.data |= htole32(E1000_TXD_CMD_VLE); |
| 1422 | } |
| 1423 | |
| 1424 | tx_buffer->m_head = m_head; |
| 1425 | tx_buffer_mapped->map = tx_buffer->map; |
| 1426 | tx_buffer->map = map; |
| 1427 | |
| 1428 | if (sc->tx_nsegs >= sc->tx_int_nsegs) { |
| 1429 | sc->tx_nsegs = 0; |
| 1430 | |
| 1431 | /* |
| 1432 | * Report Status (RS) is turned on |
| 1433 | * every tx_int_nsegs descriptors. |
| 1434 | */ |
| 1435 | cmd = E1000_TXD_CMD_RS; |
| 1436 | |
| 1437 | /* |
| 1438 | * Keep track of the descriptor, which will |
| 1439 | * be written back by hardware. |
| 1440 | */ |
| 1441 | sc->tx_dd[sc->tx_dd_tail] = last; |
| 1442 | EMX_INC_TXDD_IDX(sc->tx_dd_tail); |
| 1443 | KKASSERT(sc->tx_dd_tail != sc->tx_dd_head); |
| 1444 | } |
| 1445 | |
| 1446 | /* |
| 1447 | * Last Descriptor of Packet needs End Of Packet (EOP) |
| 1448 | */ |
| 1449 | ctxd->lower.data |= htole32(E1000_TXD_CMD_EOP | cmd); |
| 1450 | |
| 1451 | /* |
| 1452 | * Advance the Transmit Descriptor Tail (TDT), this tells |
| 1453 | * the E1000 that this frame is available to transmit. |
| 1454 | */ |
| 1455 | E1000_WRITE_REG(&sc->hw, E1000_TDT(0), i); |
| 1456 | |
| 1457 | return (0); |
| 1458 | } |
| 1459 | |
| 1460 | static void |
| 1461 | emx_set_promisc(struct emx_softc *sc) |
| 1462 | { |
| 1463 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1464 | uint32_t reg_rctl; |
| 1465 | |
| 1466 | reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL); |
| 1467 | |
| 1468 | if (ifp->if_flags & IFF_PROMISC) { |
| 1469 | reg_rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
| 1470 | /* Turn this on if you want to see bad packets */ |
| 1471 | if (emx_debug_sbp) |
| 1472 | reg_rctl |= E1000_RCTL_SBP; |
| 1473 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl); |
| 1474 | } else if (ifp->if_flags & IFF_ALLMULTI) { |
| 1475 | reg_rctl |= E1000_RCTL_MPE; |
| 1476 | reg_rctl &= ~E1000_RCTL_UPE; |
| 1477 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl); |
| 1478 | } |
| 1479 | } |
| 1480 | |
| 1481 | static void |
| 1482 | emx_disable_promisc(struct emx_softc *sc) |
| 1483 | { |
| 1484 | uint32_t reg_rctl; |
| 1485 | |
| 1486 | reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL); |
| 1487 | |
| 1488 | reg_rctl &= ~E1000_RCTL_UPE; |
| 1489 | reg_rctl &= ~E1000_RCTL_MPE; |
| 1490 | reg_rctl &= ~E1000_RCTL_SBP; |
| 1491 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl); |
| 1492 | } |
| 1493 | |
| 1494 | static void |
| 1495 | emx_set_multi(struct emx_softc *sc) |
| 1496 | { |
| 1497 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1498 | struct ifmultiaddr *ifma; |
| 1499 | uint32_t reg_rctl = 0; |
| 1500 | uint8_t mta[512]; /* Largest MTS is 4096 bits */ |
| 1501 | int mcnt = 0; |
| 1502 | |
| 1503 | LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { |
| 1504 | if (ifma->ifma_addr->sa_family != AF_LINK) |
| 1505 | continue; |
| 1506 | |
| 1507 | if (mcnt == EMX_MCAST_ADDR_MAX) |
| 1508 | break; |
| 1509 | |
| 1510 | bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), |
| 1511 | &mta[mcnt * ETHER_ADDR_LEN], ETHER_ADDR_LEN); |
| 1512 | mcnt++; |
| 1513 | } |
| 1514 | |
| 1515 | if (mcnt >= EMX_MCAST_ADDR_MAX) { |
| 1516 | reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL); |
| 1517 | reg_rctl |= E1000_RCTL_MPE; |
| 1518 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl); |
| 1519 | } else { |
| 1520 | e1000_update_mc_addr_list(&sc->hw, mta, |
| 1521 | mcnt, 1, sc->hw.mac.rar_entry_count); |
| 1522 | } |
| 1523 | } |
| 1524 | |
| 1525 | /* |
| 1526 | * This routine checks for link status and updates statistics. |
| 1527 | */ |
| 1528 | static void |
| 1529 | emx_timer(void *xsc) |
| 1530 | { |
| 1531 | struct emx_softc *sc = xsc; |
| 1532 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1533 | |
| 1534 | ifnet_serialize_all(ifp); |
| 1535 | |
| 1536 | emx_update_link_status(sc); |
| 1537 | emx_update_stats(sc); |
| 1538 | |
| 1539 | /* Reset LAA into RAR[0] on 82571 */ |
| 1540 | if (e1000_get_laa_state_82571(&sc->hw) == TRUE) |
| 1541 | e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0); |
| 1542 | |
| 1543 | if (emx_display_debug_stats && (ifp->if_flags & IFF_RUNNING)) |
| 1544 | emx_print_hw_stats(sc); |
| 1545 | |
| 1546 | emx_smartspeed(sc); |
| 1547 | |
| 1548 | callout_reset(&sc->timer, hz, emx_timer, sc); |
| 1549 | |
| 1550 | ifnet_deserialize_all(ifp); |
| 1551 | } |
| 1552 | |
| 1553 | static void |
| 1554 | emx_update_link_status(struct emx_softc *sc) |
| 1555 | { |
| 1556 | struct e1000_hw *hw = &sc->hw; |
| 1557 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1558 | device_t dev = sc->dev; |
| 1559 | uint32_t link_check = 0; |
| 1560 | |
| 1561 | /* Get the cached link value or read phy for real */ |
| 1562 | switch (hw->phy.media_type) { |
| 1563 | case e1000_media_type_copper: |
| 1564 | if (hw->mac.get_link_status) { |
| 1565 | /* Do the work to read phy */ |
| 1566 | e1000_check_for_link(hw); |
| 1567 | link_check = !hw->mac.get_link_status; |
| 1568 | if (link_check) /* ESB2 fix */ |
| 1569 | e1000_cfg_on_link_up(hw); |
| 1570 | } else { |
| 1571 | link_check = TRUE; |
| 1572 | } |
| 1573 | break; |
| 1574 | |
| 1575 | case e1000_media_type_fiber: |
| 1576 | e1000_check_for_link(hw); |
| 1577 | link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU; |
| 1578 | break; |
| 1579 | |
| 1580 | case e1000_media_type_internal_serdes: |
| 1581 | e1000_check_for_link(hw); |
| 1582 | link_check = sc->hw.mac.serdes_has_link; |
| 1583 | break; |
| 1584 | |
| 1585 | case e1000_media_type_unknown: |
| 1586 | default: |
| 1587 | break; |
| 1588 | } |
| 1589 | |
| 1590 | /* Now check for a transition */ |
| 1591 | if (link_check && sc->link_active == 0) { |
| 1592 | e1000_get_speed_and_duplex(hw, &sc->link_speed, |
| 1593 | &sc->link_duplex); |
| 1594 | |
| 1595 | /* |
| 1596 | * Check if we should enable/disable SPEED_MODE bit on |
| 1597 | * 82571EB/82572EI |
| 1598 | */ |
| 1599 | if (hw->mac.type == e1000_82571 || |
| 1600 | hw->mac.type == e1000_82572) { |
| 1601 | int tarc0; |
| 1602 | |
| 1603 | tarc0 = E1000_READ_REG(hw, E1000_TARC(0)); |
| 1604 | if (sc->link_speed != SPEED_1000) |
| 1605 | tarc0 &= ~EMX_TARC_SPEED_MODE; |
| 1606 | else |
| 1607 | tarc0 |= EMX_TARC_SPEED_MODE; |
| 1608 | E1000_WRITE_REG(hw, E1000_TARC(0), tarc0); |
| 1609 | } |
| 1610 | if (bootverbose) { |
| 1611 | device_printf(dev, "Link is up %d Mbps %s\n", |
| 1612 | sc->link_speed, |
| 1613 | ((sc->link_duplex == FULL_DUPLEX) ? |
| 1614 | "Full Duplex" : "Half Duplex")); |
| 1615 | } |
| 1616 | sc->link_active = 1; |
| 1617 | sc->smartspeed = 0; |
| 1618 | ifp->if_baudrate = sc->link_speed * 1000000; |
| 1619 | ifp->if_link_state = LINK_STATE_UP; |
| 1620 | if_link_state_change(ifp); |
| 1621 | } else if (!link_check && sc->link_active == 1) { |
| 1622 | ifp->if_baudrate = sc->link_speed = 0; |
| 1623 | sc->link_duplex = 0; |
| 1624 | if (bootverbose) |
| 1625 | device_printf(dev, "Link is Down\n"); |
| 1626 | sc->link_active = 0; |
| 1627 | #if 0 |
| 1628 | /* Link down, disable watchdog */ |
| 1629 | if->if_timer = 0; |
| 1630 | #endif |
| 1631 | ifp->if_link_state = LINK_STATE_DOWN; |
| 1632 | if_link_state_change(ifp); |
| 1633 | } |
| 1634 | } |
| 1635 | |
| 1636 | static void |
| 1637 | emx_stop(struct emx_softc *sc) |
| 1638 | { |
| 1639 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1640 | int i; |
| 1641 | |
| 1642 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 1643 | |
| 1644 | emx_disable_intr(sc); |
| 1645 | |
| 1646 | callout_stop(&sc->timer); |
| 1647 | |
| 1648 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
| 1649 | ifp->if_timer = 0; |
| 1650 | |
| 1651 | /* |
| 1652 | * Disable multiple receive queues. |
| 1653 | * |
| 1654 | * NOTE: |
| 1655 | * We should disable multiple receive queues before |
| 1656 | * resetting the hardware. |
| 1657 | */ |
| 1658 | E1000_WRITE_REG(&sc->hw, E1000_MRQC, 0); |
| 1659 | |
| 1660 | e1000_reset_hw(&sc->hw); |
| 1661 | E1000_WRITE_REG(&sc->hw, E1000_WUC, 0); |
| 1662 | |
| 1663 | for (i = 0; i < sc->num_tx_desc; i++) { |
| 1664 | struct emx_txbuf *tx_buffer = &sc->tx_buf[i]; |
| 1665 | |
| 1666 | if (tx_buffer->m_head != NULL) { |
| 1667 | bus_dmamap_unload(sc->txtag, tx_buffer->map); |
| 1668 | m_freem(tx_buffer->m_head); |
| 1669 | tx_buffer->m_head = NULL; |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | for (i = 0; i < sc->rx_ring_inuse; ++i) |
| 1674 | emx_free_rx_ring(sc, &sc->rx_data[i]); |
| 1675 | |
| 1676 | sc->csum_flags = 0; |
| 1677 | sc->csum_ehlen = 0; |
| 1678 | sc->csum_iphlen = 0; |
| 1679 | |
| 1680 | sc->tx_dd_head = 0; |
| 1681 | sc->tx_dd_tail = 0; |
| 1682 | sc->tx_nsegs = 0; |
| 1683 | } |
| 1684 | |
| 1685 | static int |
| 1686 | emx_hw_init(struct emx_softc *sc) |
| 1687 | { |
| 1688 | device_t dev = sc->dev; |
| 1689 | uint16_t rx_buffer_size; |
| 1690 | |
| 1691 | /* Issue a global reset */ |
| 1692 | e1000_reset_hw(&sc->hw); |
| 1693 | |
| 1694 | /* Get control from any management/hw control */ |
| 1695 | if (sc->hw.mac.type == e1000_82573 && |
| 1696 | e1000_check_mng_mode(&sc->hw)) |
| 1697 | emx_get_hw_control(sc); |
| 1698 | |
| 1699 | /* Set up smart power down as default off on newer adapters. */ |
| 1700 | if (!emx_smart_pwr_down && |
| 1701 | (sc->hw.mac.type == e1000_82571 || |
| 1702 | sc->hw.mac.type == e1000_82572)) { |
| 1703 | uint16_t phy_tmp = 0; |
| 1704 | |
| 1705 | /* Speed up time to link by disabling smart power down. */ |
| 1706 | e1000_read_phy_reg(&sc->hw, |
| 1707 | IGP02E1000_PHY_POWER_MGMT, &phy_tmp); |
| 1708 | phy_tmp &= ~IGP02E1000_PM_SPD; |
| 1709 | e1000_write_phy_reg(&sc->hw, |
| 1710 | IGP02E1000_PHY_POWER_MGMT, phy_tmp); |
| 1711 | } |
| 1712 | |
| 1713 | /* |
| 1714 | * These parameters control the automatic generation (Tx) and |
| 1715 | * response (Rx) to Ethernet PAUSE frames. |
| 1716 | * - High water mark should allow for at least two frames to be |
| 1717 | * received after sending an XOFF. |
| 1718 | * - Low water mark works best when it is very near the high water mark. |
| 1719 | * This allows the receiver to restart by sending XON when it has |
| 1720 | * drained a bit. Here we use an arbitary value of 1500 which will |
| 1721 | * restart after one full frame is pulled from the buffer. There |
| 1722 | * could be several smaller frames in the buffer and if so they will |
| 1723 | * not trigger the XON until their total number reduces the buffer |
| 1724 | * by 1500. |
| 1725 | * - The pause time is fairly large at 1000 x 512ns = 512 usec. |
| 1726 | */ |
| 1727 | rx_buffer_size = (E1000_READ_REG(&sc->hw, E1000_PBA) & 0xffff) << 10; |
| 1728 | |
| 1729 | sc->hw.fc.high_water = rx_buffer_size - |
| 1730 | roundup2(sc->max_frame_size, 1024); |
| 1731 | sc->hw.fc.low_water = sc->hw.fc.high_water - 1500; |
| 1732 | |
| 1733 | if (sc->hw.mac.type == e1000_80003es2lan) |
| 1734 | sc->hw.fc.pause_time = 0xFFFF; |
| 1735 | else |
| 1736 | sc->hw.fc.pause_time = EMX_FC_PAUSE_TIME; |
| 1737 | sc->hw.fc.send_xon = TRUE; |
| 1738 | sc->hw.fc.requested_mode = e1000_fc_full; |
| 1739 | |
| 1740 | if (e1000_init_hw(&sc->hw) < 0) { |
| 1741 | device_printf(dev, "Hardware Initialization Failed\n"); |
| 1742 | return (EIO); |
| 1743 | } |
| 1744 | |
| 1745 | e1000_check_for_link(&sc->hw); |
| 1746 | |
| 1747 | return (0); |
| 1748 | } |
| 1749 | |
| 1750 | static void |
| 1751 | emx_setup_ifp(struct emx_softc *sc) |
| 1752 | { |
| 1753 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 1754 | |
| 1755 | if_initname(ifp, device_get_name(sc->dev), |
| 1756 | device_get_unit(sc->dev)); |
| 1757 | ifp->if_softc = sc; |
| 1758 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 1759 | ifp->if_init = emx_init; |
| 1760 | ifp->if_ioctl = emx_ioctl; |
| 1761 | ifp->if_start = emx_start; |
| 1762 | #ifdef IFPOLL_ENABLE |
| 1763 | ifp->if_qpoll = emx_qpoll; |
| 1764 | #endif |
| 1765 | ifp->if_watchdog = emx_watchdog; |
| 1766 | ifp->if_serialize = emx_serialize; |
| 1767 | ifp->if_deserialize = emx_deserialize; |
| 1768 | ifp->if_tryserialize = emx_tryserialize; |
| 1769 | #ifdef INVARIANTS |
| 1770 | ifp->if_serialize_assert = emx_serialize_assert; |
| 1771 | #endif |
| 1772 | ifq_set_maxlen(&ifp->if_snd, sc->num_tx_desc - 1); |
| 1773 | ifq_set_ready(&ifp->if_snd); |
| 1774 | |
| 1775 | ether_ifattach(ifp, sc->hw.mac.addr, NULL); |
| 1776 | |
| 1777 | ifp->if_capabilities = IFCAP_HWCSUM | |
| 1778 | IFCAP_VLAN_HWTAGGING | |
| 1779 | IFCAP_VLAN_MTU; |
| 1780 | if (sc->rx_ring_cnt > 1) |
| 1781 | ifp->if_capabilities |= IFCAP_RSS; |
| 1782 | ifp->if_capenable = ifp->if_capabilities; |
| 1783 | ifp->if_hwassist = EMX_CSUM_FEATURES; |
| 1784 | |
| 1785 | /* |
| 1786 | * Tell the upper layer(s) we support long frames. |
| 1787 | */ |
| 1788 | ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); |
| 1789 | |
| 1790 | /* |
| 1791 | * Specify the media types supported by this sc and register |
| 1792 | * callbacks to update media and link information |
| 1793 | */ |
| 1794 | ifmedia_init(&sc->media, IFM_IMASK, |
| 1795 | emx_media_change, emx_media_status); |
| 1796 | if (sc->hw.phy.media_type == e1000_media_type_fiber || |
| 1797 | sc->hw.phy.media_type == e1000_media_type_internal_serdes) { |
| 1798 | ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX, |
| 1799 | 0, NULL); |
| 1800 | ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL); |
| 1801 | } else { |
| 1802 | ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL); |
| 1803 | ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX, |
| 1804 | 0, NULL); |
| 1805 | ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL); |
| 1806 | ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX, |
| 1807 | 0, NULL); |
| 1808 | if (sc->hw.phy.type != e1000_phy_ife) { |
| 1809 | ifmedia_add(&sc->media, |
| 1810 | IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); |
| 1811 | ifmedia_add(&sc->media, |
| 1812 | IFM_ETHER | IFM_1000_T, 0, NULL); |
| 1813 | } |
| 1814 | } |
| 1815 | ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL); |
| 1816 | ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO); |
| 1817 | } |
| 1818 | |
| 1819 | /* |
| 1820 | * Workaround for SmartSpeed on 82541 and 82547 controllers |
| 1821 | */ |
| 1822 | static void |
| 1823 | emx_smartspeed(struct emx_softc *sc) |
| 1824 | { |
| 1825 | uint16_t phy_tmp; |
| 1826 | |
| 1827 | if (sc->link_active || sc->hw.phy.type != e1000_phy_igp || |
| 1828 | sc->hw.mac.autoneg == 0 || |
| 1829 | (sc->hw.phy.autoneg_advertised & ADVERTISE_1000_FULL) == 0) |
| 1830 | return; |
| 1831 | |
| 1832 | if (sc->smartspeed == 0) { |
| 1833 | /* |
| 1834 | * If Master/Slave config fault is asserted twice, |
| 1835 | * we assume back-to-back |
| 1836 | */ |
| 1837 | e1000_read_phy_reg(&sc->hw, PHY_1000T_STATUS, &phy_tmp); |
| 1838 | if (!(phy_tmp & SR_1000T_MS_CONFIG_FAULT)) |
| 1839 | return; |
| 1840 | e1000_read_phy_reg(&sc->hw, PHY_1000T_STATUS, &phy_tmp); |
| 1841 | if (phy_tmp & SR_1000T_MS_CONFIG_FAULT) { |
| 1842 | e1000_read_phy_reg(&sc->hw, |
| 1843 | PHY_1000T_CTRL, &phy_tmp); |
| 1844 | if (phy_tmp & CR_1000T_MS_ENABLE) { |
| 1845 | phy_tmp &= ~CR_1000T_MS_ENABLE; |
| 1846 | e1000_write_phy_reg(&sc->hw, |
| 1847 | PHY_1000T_CTRL, phy_tmp); |
| 1848 | sc->smartspeed++; |
| 1849 | if (sc->hw.mac.autoneg && |
| 1850 | !e1000_phy_setup_autoneg(&sc->hw) && |
| 1851 | !e1000_read_phy_reg(&sc->hw, |
| 1852 | PHY_CONTROL, &phy_tmp)) { |
| 1853 | phy_tmp |= MII_CR_AUTO_NEG_EN | |
| 1854 | MII_CR_RESTART_AUTO_NEG; |
| 1855 | e1000_write_phy_reg(&sc->hw, |
| 1856 | PHY_CONTROL, phy_tmp); |
| 1857 | } |
| 1858 | } |
| 1859 | } |
| 1860 | return; |
| 1861 | } else if (sc->smartspeed == EMX_SMARTSPEED_DOWNSHIFT) { |
| 1862 | /* If still no link, perhaps using 2/3 pair cable */ |
| 1863 | e1000_read_phy_reg(&sc->hw, PHY_1000T_CTRL, &phy_tmp); |
| 1864 | phy_tmp |= CR_1000T_MS_ENABLE; |
| 1865 | e1000_write_phy_reg(&sc->hw, PHY_1000T_CTRL, phy_tmp); |
| 1866 | if (sc->hw.mac.autoneg && |
| 1867 | !e1000_phy_setup_autoneg(&sc->hw) && |
| 1868 | !e1000_read_phy_reg(&sc->hw, PHY_CONTROL, &phy_tmp)) { |
| 1869 | phy_tmp |= MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG; |
| 1870 | e1000_write_phy_reg(&sc->hw, PHY_CONTROL, phy_tmp); |
| 1871 | } |
| 1872 | } |
| 1873 | |
| 1874 | /* Restart process after EMX_SMARTSPEED_MAX iterations */ |
| 1875 | if (sc->smartspeed++ == EMX_SMARTSPEED_MAX) |
| 1876 | sc->smartspeed = 0; |
| 1877 | } |
| 1878 | |
| 1879 | static int |
| 1880 | emx_create_tx_ring(struct emx_softc *sc) |
| 1881 | { |
| 1882 | device_t dev = sc->dev; |
| 1883 | struct emx_txbuf *tx_buffer; |
| 1884 | int error, i, tsize; |
| 1885 | |
| 1886 | /* |
| 1887 | * Validate number of transmit descriptors. It must not exceed |
| 1888 | * hardware maximum, and must be multiple of E1000_DBA_ALIGN. |
| 1889 | */ |
| 1890 | if ((emx_txd * sizeof(struct e1000_tx_desc)) % EMX_DBA_ALIGN != 0 || |
| 1891 | emx_txd > EMX_MAX_TXD || emx_txd < EMX_MIN_TXD) { |
| 1892 | device_printf(dev, "Using %d TX descriptors instead of %d!\n", |
| 1893 | EMX_DEFAULT_TXD, emx_txd); |
| 1894 | sc->num_tx_desc = EMX_DEFAULT_TXD; |
| 1895 | } else { |
| 1896 | sc->num_tx_desc = emx_txd; |
| 1897 | } |
| 1898 | |
| 1899 | /* |
| 1900 | * Allocate Transmit Descriptor ring |
| 1901 | */ |
| 1902 | tsize = roundup2(sc->num_tx_desc * sizeof(struct e1000_tx_desc), |
| 1903 | EMX_DBA_ALIGN); |
| 1904 | sc->tx_desc_base = bus_dmamem_coherent_any(sc->parent_dtag, |
| 1905 | EMX_DBA_ALIGN, tsize, BUS_DMA_WAITOK, |
| 1906 | &sc->tx_desc_dtag, &sc->tx_desc_dmap, |
| 1907 | &sc->tx_desc_paddr); |
| 1908 | if (sc->tx_desc_base == NULL) { |
| 1909 | device_printf(dev, "Unable to allocate tx_desc memory\n"); |
| 1910 | return ENOMEM; |
| 1911 | } |
| 1912 | |
| 1913 | sc->tx_buf = kmalloc(sizeof(struct emx_txbuf) * sc->num_tx_desc, |
| 1914 | M_DEVBUF, M_WAITOK | M_ZERO); |
| 1915 | |
| 1916 | /* |
| 1917 | * Create DMA tags for tx buffers |
| 1918 | */ |
| 1919 | error = bus_dma_tag_create(sc->parent_dtag, /* parent */ |
| 1920 | 1, 0, /* alignment, bounds */ |
| 1921 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 1922 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 1923 | NULL, NULL, /* filter, filterarg */ |
| 1924 | EMX_TSO_SIZE, /* maxsize */ |
| 1925 | EMX_MAX_SCATTER, /* nsegments */ |
| 1926 | EMX_MAX_SEGSIZE, /* maxsegsize */ |
| 1927 | BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | |
| 1928 | BUS_DMA_ONEBPAGE, /* flags */ |
| 1929 | &sc->txtag); |
| 1930 | if (error) { |
| 1931 | device_printf(dev, "Unable to allocate TX DMA tag\n"); |
| 1932 | kfree(sc->tx_buf, M_DEVBUF); |
| 1933 | sc->tx_buf = NULL; |
| 1934 | return error; |
| 1935 | } |
| 1936 | |
| 1937 | /* |
| 1938 | * Create DMA maps for tx buffers |
| 1939 | */ |
| 1940 | for (i = 0; i < sc->num_tx_desc; i++) { |
| 1941 | tx_buffer = &sc->tx_buf[i]; |
| 1942 | |
| 1943 | error = bus_dmamap_create(sc->txtag, |
| 1944 | BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, |
| 1945 | &tx_buffer->map); |
| 1946 | if (error) { |
| 1947 | device_printf(dev, "Unable to create TX DMA map\n"); |
| 1948 | emx_destroy_tx_ring(sc, i); |
| 1949 | return error; |
| 1950 | } |
| 1951 | } |
| 1952 | return (0); |
| 1953 | } |
| 1954 | |
| 1955 | static void |
| 1956 | emx_init_tx_ring(struct emx_softc *sc) |
| 1957 | { |
| 1958 | /* Clear the old ring contents */ |
| 1959 | bzero(sc->tx_desc_base, |
| 1960 | sizeof(struct e1000_tx_desc) * sc->num_tx_desc); |
| 1961 | |
| 1962 | /* Reset state */ |
| 1963 | sc->next_avail_tx_desc = 0; |
| 1964 | sc->next_tx_to_clean = 0; |
| 1965 | sc->num_tx_desc_avail = sc->num_tx_desc; |
| 1966 | } |
| 1967 | |
| 1968 | static void |
| 1969 | emx_init_tx_unit(struct emx_softc *sc) |
| 1970 | { |
| 1971 | uint32_t tctl, tarc, tipg = 0; |
| 1972 | uint64_t bus_addr; |
| 1973 | |
| 1974 | /* Setup the Base and Length of the Tx Descriptor Ring */ |
| 1975 | bus_addr = sc->tx_desc_paddr; |
| 1976 | E1000_WRITE_REG(&sc->hw, E1000_TDLEN(0), |
| 1977 | sc->num_tx_desc * sizeof(struct e1000_tx_desc)); |
| 1978 | E1000_WRITE_REG(&sc->hw, E1000_TDBAH(0), |
| 1979 | (uint32_t)(bus_addr >> 32)); |
| 1980 | E1000_WRITE_REG(&sc->hw, E1000_TDBAL(0), |
| 1981 | (uint32_t)bus_addr); |
| 1982 | /* Setup the HW Tx Head and Tail descriptor pointers */ |
| 1983 | E1000_WRITE_REG(&sc->hw, E1000_TDT(0), 0); |
| 1984 | E1000_WRITE_REG(&sc->hw, E1000_TDH(0), 0); |
| 1985 | |
| 1986 | /* Set the default values for the Tx Inter Packet Gap timer */ |
| 1987 | switch (sc->hw.mac.type) { |
| 1988 | case e1000_80003es2lan: |
| 1989 | tipg = DEFAULT_82543_TIPG_IPGR1; |
| 1990 | tipg |= DEFAULT_80003ES2LAN_TIPG_IPGR2 << |
| 1991 | E1000_TIPG_IPGR2_SHIFT; |
| 1992 | break; |
| 1993 | |
| 1994 | default: |
| 1995 | if (sc->hw.phy.media_type == e1000_media_type_fiber || |
| 1996 | sc->hw.phy.media_type == e1000_media_type_internal_serdes) |
| 1997 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
| 1998 | else |
| 1999 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; |
| 2000 | tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; |
| 2001 | tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; |
| 2002 | break; |
| 2003 | } |
| 2004 | |
| 2005 | E1000_WRITE_REG(&sc->hw, E1000_TIPG, tipg); |
| 2006 | |
| 2007 | /* NOTE: 0 is not allowed for TIDV */ |
| 2008 | E1000_WRITE_REG(&sc->hw, E1000_TIDV, 1); |
| 2009 | E1000_WRITE_REG(&sc->hw, E1000_TADV, 0); |
| 2010 | |
| 2011 | if (sc->hw.mac.type == e1000_82571 || |
| 2012 | sc->hw.mac.type == e1000_82572) { |
| 2013 | tarc = E1000_READ_REG(&sc->hw, E1000_TARC(0)); |
| 2014 | tarc |= EMX_TARC_SPEED_MODE; |
| 2015 | E1000_WRITE_REG(&sc->hw, E1000_TARC(0), tarc); |
| 2016 | } else if (sc->hw.mac.type == e1000_80003es2lan) { |
| 2017 | tarc = E1000_READ_REG(&sc->hw, E1000_TARC(0)); |
| 2018 | tarc |= 1; |
| 2019 | E1000_WRITE_REG(&sc->hw, E1000_TARC(0), tarc); |
| 2020 | tarc = E1000_READ_REG(&sc->hw, E1000_TARC(1)); |
| 2021 | tarc |= 1; |
| 2022 | E1000_WRITE_REG(&sc->hw, E1000_TARC(1), tarc); |
| 2023 | } |
| 2024 | |
| 2025 | /* Program the Transmit Control Register */ |
| 2026 | tctl = E1000_READ_REG(&sc->hw, E1000_TCTL); |
| 2027 | tctl &= ~E1000_TCTL_CT; |
| 2028 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN | |
| 2029 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
| 2030 | tctl |= E1000_TCTL_MULR; |
| 2031 | |
| 2032 | /* This write will effectively turn on the transmit unit. */ |
| 2033 | E1000_WRITE_REG(&sc->hw, E1000_TCTL, tctl); |
| 2034 | } |
| 2035 | |
| 2036 | static void |
| 2037 | emx_destroy_tx_ring(struct emx_softc *sc, int ndesc) |
| 2038 | { |
| 2039 | struct emx_txbuf *tx_buffer; |
| 2040 | int i; |
| 2041 | |
| 2042 | /* Free Transmit Descriptor ring */ |
| 2043 | if (sc->tx_desc_base) { |
| 2044 | bus_dmamap_unload(sc->tx_desc_dtag, sc->tx_desc_dmap); |
| 2045 | bus_dmamem_free(sc->tx_desc_dtag, sc->tx_desc_base, |
| 2046 | sc->tx_desc_dmap); |
| 2047 | bus_dma_tag_destroy(sc->tx_desc_dtag); |
| 2048 | |
| 2049 | sc->tx_desc_base = NULL; |
| 2050 | } |
| 2051 | |
| 2052 | if (sc->tx_buf == NULL) |
| 2053 | return; |
| 2054 | |
| 2055 | for (i = 0; i < ndesc; i++) { |
| 2056 | tx_buffer = &sc->tx_buf[i]; |
| 2057 | |
| 2058 | KKASSERT(tx_buffer->m_head == NULL); |
| 2059 | bus_dmamap_destroy(sc->txtag, tx_buffer->map); |
| 2060 | } |
| 2061 | bus_dma_tag_destroy(sc->txtag); |
| 2062 | |
| 2063 | kfree(sc->tx_buf, M_DEVBUF); |
| 2064 | sc->tx_buf = NULL; |
| 2065 | } |
| 2066 | |
| 2067 | /* |
| 2068 | * The offload context needs to be set when we transfer the first |
| 2069 | * packet of a particular protocol (TCP/UDP). This routine has been |
| 2070 | * enhanced to deal with inserted VLAN headers. |
| 2071 | * |
| 2072 | * If the new packet's ether header length, ip header length and |
| 2073 | * csum offloading type are same as the previous packet, we should |
| 2074 | * avoid allocating a new csum context descriptor; mainly to take |
| 2075 | * advantage of the pipeline effect of the TX data read request. |
| 2076 | * |
| 2077 | * This function returns number of TX descrptors allocated for |
| 2078 | * csum context. |
| 2079 | */ |
| 2080 | static int |
| 2081 | emx_txcsum(struct emx_softc *sc, struct mbuf *mp, |
| 2082 | uint32_t *txd_upper, uint32_t *txd_lower) |
| 2083 | { |
| 2084 | struct e1000_context_desc *TXD; |
| 2085 | struct emx_txbuf *tx_buffer; |
| 2086 | struct ether_vlan_header *eh; |
| 2087 | struct ip *ip; |
| 2088 | int curr_txd, ehdrlen, csum_flags; |
| 2089 | uint32_t cmd, hdr_len, ip_hlen; |
| 2090 | uint16_t etype; |
| 2091 | |
| 2092 | /* |
| 2093 | * Determine where frame payload starts. |
| 2094 | * Jump over vlan headers if already present, |
| 2095 | * helpful for QinQ too. |
| 2096 | */ |
| 2097 | KASSERT(mp->m_len >= ETHER_HDR_LEN, |
| 2098 | ("emx_txcsum_pullup is not called (eh)?\n")); |
| 2099 | eh = mtod(mp, struct ether_vlan_header *); |
| 2100 | if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { |
| 2101 | KASSERT(mp->m_len >= ETHER_HDR_LEN + EVL_ENCAPLEN, |
| 2102 | ("emx_txcsum_pullup is not called (evh)?\n")); |
| 2103 | etype = ntohs(eh->evl_proto); |
| 2104 | ehdrlen = ETHER_HDR_LEN + EVL_ENCAPLEN; |
| 2105 | } else { |
| 2106 | etype = ntohs(eh->evl_encap_proto); |
| 2107 | ehdrlen = ETHER_HDR_LEN; |
| 2108 | } |
| 2109 | |
| 2110 | /* |
| 2111 | * We only support TCP/UDP for IPv4 for the moment. |
| 2112 | * TODO: Support SCTP too when it hits the tree. |
| 2113 | */ |
| 2114 | if (etype != ETHERTYPE_IP) |
| 2115 | return 0; |
| 2116 | |
| 2117 | KASSERT(mp->m_len >= ehdrlen + EMX_IPVHL_SIZE, |
| 2118 | ("emx_txcsum_pullup is not called (eh+ip_vhl)?\n")); |
| 2119 | |
| 2120 | /* NOTE: We could only safely access ip.ip_vhl part */ |
| 2121 | ip = (struct ip *)(mp->m_data + ehdrlen); |
| 2122 | ip_hlen = ip->ip_hl << 2; |
| 2123 | |
| 2124 | csum_flags = mp->m_pkthdr.csum_flags & EMX_CSUM_FEATURES; |
| 2125 | |
| 2126 | if (sc->csum_ehlen == ehdrlen && sc->csum_iphlen == ip_hlen && |
| 2127 | sc->csum_flags == csum_flags) { |
| 2128 | /* |
| 2129 | * Same csum offload context as the previous packets; |
| 2130 | * just return. |
| 2131 | */ |
| 2132 | *txd_upper = sc->csum_txd_upper; |
| 2133 | *txd_lower = sc->csum_txd_lower; |
| 2134 | return 0; |
| 2135 | } |
| 2136 | |
| 2137 | /* |
| 2138 | * Setup a new csum offload context. |
| 2139 | */ |
| 2140 | |
| 2141 | curr_txd = sc->next_avail_tx_desc; |
| 2142 | tx_buffer = &sc->tx_buf[curr_txd]; |
| 2143 | TXD = (struct e1000_context_desc *)&sc->tx_desc_base[curr_txd]; |
| 2144 | |
| 2145 | cmd = 0; |
| 2146 | |
| 2147 | /* Setup of IP header checksum. */ |
| 2148 | if (csum_flags & CSUM_IP) { |
| 2149 | /* |
| 2150 | * Start offset for header checksum calculation. |
| 2151 | * End offset for header checksum calculation. |
| 2152 | * Offset of place to put the checksum. |
| 2153 | */ |
| 2154 | TXD->lower_setup.ip_fields.ipcss = ehdrlen; |
| 2155 | TXD->lower_setup.ip_fields.ipcse = |
| 2156 | htole16(ehdrlen + ip_hlen - 1); |
| 2157 | TXD->lower_setup.ip_fields.ipcso = |
| 2158 | ehdrlen + offsetof(struct ip, ip_sum); |
| 2159 | cmd |= E1000_TXD_CMD_IP; |
| 2160 | *txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
| 2161 | } |
| 2162 | hdr_len = ehdrlen + ip_hlen; |
| 2163 | |
| 2164 | if (csum_flags & CSUM_TCP) { |
| 2165 | /* |
| 2166 | * Start offset for payload checksum calculation. |
| 2167 | * End offset for payload checksum calculation. |
| 2168 | * Offset of place to put the checksum. |
| 2169 | */ |
| 2170 | TXD->upper_setup.tcp_fields.tucss = hdr_len; |
| 2171 | TXD->upper_setup.tcp_fields.tucse = htole16(0); |
| 2172 | TXD->upper_setup.tcp_fields.tucso = |
| 2173 | hdr_len + offsetof(struct tcphdr, th_sum); |
| 2174 | cmd |= E1000_TXD_CMD_TCP; |
| 2175 | *txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
| 2176 | } else if (csum_flags & CSUM_UDP) { |
| 2177 | /* |
| 2178 | * Start offset for header checksum calculation. |
| 2179 | * End offset for header checksum calculation. |
| 2180 | * Offset of place to put the checksum. |
| 2181 | */ |
| 2182 | TXD->upper_setup.tcp_fields.tucss = hdr_len; |
| 2183 | TXD->upper_setup.tcp_fields.tucse = htole16(0); |
| 2184 | TXD->upper_setup.tcp_fields.tucso = |
| 2185 | hdr_len + offsetof(struct udphdr, uh_sum); |
| 2186 | *txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
| 2187 | } |
| 2188 | |
| 2189 | *txd_lower = E1000_TXD_CMD_DEXT | /* Extended descr type */ |
| 2190 | E1000_TXD_DTYP_D; /* Data descr */ |
| 2191 | |
| 2192 | /* Save the information for this csum offloading context */ |
| 2193 | sc->csum_ehlen = ehdrlen; |
| 2194 | sc->csum_iphlen = ip_hlen; |
| 2195 | sc->csum_flags = csum_flags; |
| 2196 | sc->csum_txd_upper = *txd_upper; |
| 2197 | sc->csum_txd_lower = *txd_lower; |
| 2198 | |
| 2199 | TXD->tcp_seg_setup.data = htole32(0); |
| 2200 | TXD->cmd_and_length = |
| 2201 | htole32(E1000_TXD_CMD_IFCS | E1000_TXD_CMD_DEXT | cmd); |
| 2202 | |
| 2203 | if (++curr_txd == sc->num_tx_desc) |
| 2204 | curr_txd = 0; |
| 2205 | |
| 2206 | KKASSERT(sc->num_tx_desc_avail > 0); |
| 2207 | sc->num_tx_desc_avail--; |
| 2208 | |
| 2209 | sc->next_avail_tx_desc = curr_txd; |
| 2210 | return 1; |
| 2211 | } |
| 2212 | |
| 2213 | static int |
| 2214 | emx_txcsum_pullup(struct emx_softc *sc, struct mbuf **m0) |
| 2215 | { |
| 2216 | struct mbuf *m = *m0; |
| 2217 | struct ether_header *eh; |
| 2218 | int len; |
| 2219 | |
| 2220 | sc->tx_csum_try_pullup++; |
| 2221 | |
| 2222 | len = ETHER_HDR_LEN + EMX_IPVHL_SIZE; |
| 2223 | |
| 2224 | if (__predict_false(!M_WRITABLE(m))) { |
| 2225 | if (__predict_false(m->m_len < ETHER_HDR_LEN)) { |
| 2226 | sc->tx_csum_drop1++; |
| 2227 | m_freem(m); |
| 2228 | *m0 = NULL; |
| 2229 | return ENOBUFS; |
| 2230 | } |
| 2231 | eh = mtod(m, struct ether_header *); |
| 2232 | |
| 2233 | if (eh->ether_type == htons(ETHERTYPE_VLAN)) |
| 2234 | len += EVL_ENCAPLEN; |
| 2235 | |
| 2236 | if (m->m_len < len) { |
| 2237 | sc->tx_csum_drop2++; |
| 2238 | m_freem(m); |
| 2239 | *m0 = NULL; |
| 2240 | return ENOBUFS; |
| 2241 | } |
| 2242 | return 0; |
| 2243 | } |
| 2244 | |
| 2245 | if (__predict_false(m->m_len < ETHER_HDR_LEN)) { |
| 2246 | sc->tx_csum_pullup1++; |
| 2247 | m = m_pullup(m, ETHER_HDR_LEN); |
| 2248 | if (m == NULL) { |
| 2249 | sc->tx_csum_pullup1_failed++; |
| 2250 | *m0 = NULL; |
| 2251 | return ENOBUFS; |
| 2252 | } |
| 2253 | *m0 = m; |
| 2254 | } |
| 2255 | eh = mtod(m, struct ether_header *); |
| 2256 | |
| 2257 | if (eh->ether_type == htons(ETHERTYPE_VLAN)) |
| 2258 | len += EVL_ENCAPLEN; |
| 2259 | |
| 2260 | if (m->m_len < len) { |
| 2261 | sc->tx_csum_pullup2++; |
| 2262 | m = m_pullup(m, len); |
| 2263 | if (m == NULL) { |
| 2264 | sc->tx_csum_pullup2_failed++; |
| 2265 | *m0 = NULL; |
| 2266 | return ENOBUFS; |
| 2267 | } |
| 2268 | *m0 = m; |
| 2269 | } |
| 2270 | return 0; |
| 2271 | } |
| 2272 | |
| 2273 | static void |
| 2274 | emx_txeof(struct emx_softc *sc) |
| 2275 | { |
| 2276 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 2277 | struct emx_txbuf *tx_buffer; |
| 2278 | int first, num_avail; |
| 2279 | |
| 2280 | if (sc->tx_dd_head == sc->tx_dd_tail) |
| 2281 | return; |
| 2282 | |
| 2283 | if (sc->num_tx_desc_avail == sc->num_tx_desc) |
| 2284 | return; |
| 2285 | |
| 2286 | num_avail = sc->num_tx_desc_avail; |
| 2287 | first = sc->next_tx_to_clean; |
| 2288 | |
| 2289 | while (sc->tx_dd_head != sc->tx_dd_tail) { |
| 2290 | int dd_idx = sc->tx_dd[sc->tx_dd_head]; |
| 2291 | struct e1000_tx_desc *tx_desc; |
| 2292 | |
| 2293 | tx_desc = &sc->tx_desc_base[dd_idx]; |
| 2294 | if (tx_desc->upper.fields.status & E1000_TXD_STAT_DD) { |
| 2295 | EMX_INC_TXDD_IDX(sc->tx_dd_head); |
| 2296 | |
| 2297 | if (++dd_idx == sc->num_tx_desc) |
| 2298 | dd_idx = 0; |
| 2299 | |
| 2300 | while (first != dd_idx) { |
| 2301 | logif(pkt_txclean); |
| 2302 | |
| 2303 | num_avail++; |
| 2304 | |
| 2305 | tx_buffer = &sc->tx_buf[first]; |
| 2306 | if (tx_buffer->m_head) { |
| 2307 | ifp->if_opackets++; |
| 2308 | bus_dmamap_unload(sc->txtag, |
| 2309 | tx_buffer->map); |
| 2310 | m_freem(tx_buffer->m_head); |
| 2311 | tx_buffer->m_head = NULL; |
| 2312 | } |
| 2313 | |
| 2314 | if (++first == sc->num_tx_desc) |
| 2315 | first = 0; |
| 2316 | } |
| 2317 | } else { |
| 2318 | break; |
| 2319 | } |
| 2320 | } |
| 2321 | sc->next_tx_to_clean = first; |
| 2322 | sc->num_tx_desc_avail = num_avail; |
| 2323 | |
| 2324 | if (sc->tx_dd_head == sc->tx_dd_tail) { |
| 2325 | sc->tx_dd_head = 0; |
| 2326 | sc->tx_dd_tail = 0; |
| 2327 | } |
| 2328 | |
| 2329 | if (!EMX_IS_OACTIVE(sc)) { |
| 2330 | ifp->if_flags &= ~IFF_OACTIVE; |
| 2331 | |
| 2332 | /* All clean, turn off the timer */ |
| 2333 | if (sc->num_tx_desc_avail == sc->num_tx_desc) |
| 2334 | ifp->if_timer = 0; |
| 2335 | } |
| 2336 | } |
| 2337 | |
| 2338 | static void |
| 2339 | emx_tx_collect(struct emx_softc *sc) |
| 2340 | { |
| 2341 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 2342 | struct emx_txbuf *tx_buffer; |
| 2343 | int tdh, first, num_avail, dd_idx = -1; |
| 2344 | |
| 2345 | if (sc->num_tx_desc_avail == sc->num_tx_desc) |
| 2346 | return; |
| 2347 | |
| 2348 | tdh = E1000_READ_REG(&sc->hw, E1000_TDH(0)); |
| 2349 | if (tdh == sc->next_tx_to_clean) |
| 2350 | return; |
| 2351 | |
| 2352 | if (sc->tx_dd_head != sc->tx_dd_tail) |
| 2353 | dd_idx = sc->tx_dd[sc->tx_dd_head]; |
| 2354 | |
| 2355 | num_avail = sc->num_tx_desc_avail; |
| 2356 | first = sc->next_tx_to_clean; |
| 2357 | |
| 2358 | while (first != tdh) { |
| 2359 | logif(pkt_txclean); |
| 2360 | |
| 2361 | num_avail++; |
| 2362 | |
| 2363 | tx_buffer = &sc->tx_buf[first]; |
| 2364 | if (tx_buffer->m_head) { |
| 2365 | ifp->if_opackets++; |
| 2366 | bus_dmamap_unload(sc->txtag, |
| 2367 | tx_buffer->map); |
| 2368 | m_freem(tx_buffer->m_head); |
| 2369 | tx_buffer->m_head = NULL; |
| 2370 | } |
| 2371 | |
| 2372 | if (first == dd_idx) { |
| 2373 | EMX_INC_TXDD_IDX(sc->tx_dd_head); |
| 2374 | if (sc->tx_dd_head == sc->tx_dd_tail) { |
| 2375 | sc->tx_dd_head = 0; |
| 2376 | sc->tx_dd_tail = 0; |
| 2377 | dd_idx = -1; |
| 2378 | } else { |
| 2379 | dd_idx = sc->tx_dd[sc->tx_dd_head]; |
| 2380 | } |
| 2381 | } |
| 2382 | |
| 2383 | if (++first == sc->num_tx_desc) |
| 2384 | first = 0; |
| 2385 | } |
| 2386 | sc->next_tx_to_clean = first; |
| 2387 | sc->num_tx_desc_avail = num_avail; |
| 2388 | |
| 2389 | if (!EMX_IS_OACTIVE(sc)) { |
| 2390 | ifp->if_flags &= ~IFF_OACTIVE; |
| 2391 | |
| 2392 | /* All clean, turn off the timer */ |
| 2393 | if (sc->num_tx_desc_avail == sc->num_tx_desc) |
| 2394 | ifp->if_timer = 0; |
| 2395 | } |
| 2396 | } |
| 2397 | |
| 2398 | /* |
| 2399 | * When Link is lost sometimes there is work still in the TX ring |
| 2400 | * which will result in a watchdog, rather than allow that do an |
| 2401 | * attempted cleanup and then reinit here. Note that this has been |
| 2402 | * seens mostly with fiber adapters. |
| 2403 | */ |
| 2404 | static void |
| 2405 | emx_tx_purge(struct emx_softc *sc) |
| 2406 | { |
| 2407 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 2408 | |
| 2409 | if (!sc->link_active && ifp->if_timer) { |
| 2410 | emx_tx_collect(sc); |
| 2411 | if (ifp->if_timer) { |
| 2412 | if_printf(ifp, "Link lost, TX pending, reinit\n"); |
| 2413 | ifp->if_timer = 0; |
| 2414 | emx_init(sc); |
| 2415 | } |
| 2416 | } |
| 2417 | } |
| 2418 | |
| 2419 | static int |
| 2420 | emx_newbuf(struct emx_softc *sc, struct emx_rxdata *rdata, int i, int init) |
| 2421 | { |
| 2422 | struct mbuf *m; |
| 2423 | bus_dma_segment_t seg; |
| 2424 | bus_dmamap_t map; |
| 2425 | struct emx_rxbuf *rx_buffer; |
| 2426 | int error, nseg; |
| 2427 | |
| 2428 | m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR); |
| 2429 | if (m == NULL) { |
| 2430 | rdata->mbuf_cluster_failed++; |
| 2431 | if (init) { |
| 2432 | if_printf(&sc->arpcom.ac_if, |
| 2433 | "Unable to allocate RX mbuf\n"); |
| 2434 | } |
| 2435 | return (ENOBUFS); |
| 2436 | } |
| 2437 | m->m_len = m->m_pkthdr.len = MCLBYTES; |
| 2438 | |
| 2439 | if (sc->max_frame_size <= MCLBYTES - ETHER_ALIGN) |
| 2440 | m_adj(m, ETHER_ALIGN); |
| 2441 | |
| 2442 | error = bus_dmamap_load_mbuf_segment(rdata->rxtag, |
| 2443 | rdata->rx_sparemap, m, |
| 2444 | &seg, 1, &nseg, BUS_DMA_NOWAIT); |
| 2445 | if (error) { |
| 2446 | m_freem(m); |
| 2447 | if (init) { |
| 2448 | if_printf(&sc->arpcom.ac_if, |
| 2449 | "Unable to load RX mbuf\n"); |
| 2450 | } |
| 2451 | return (error); |
| 2452 | } |
| 2453 | |
| 2454 | rx_buffer = &rdata->rx_buf[i]; |
| 2455 | if (rx_buffer->m_head != NULL) |
| 2456 | bus_dmamap_unload(rdata->rxtag, rx_buffer->map); |
| 2457 | |
| 2458 | map = rx_buffer->map; |
| 2459 | rx_buffer->map = rdata->rx_sparemap; |
| 2460 | rdata->rx_sparemap = map; |
| 2461 | |
| 2462 | rx_buffer->m_head = m; |
| 2463 | rx_buffer->paddr = seg.ds_addr; |
| 2464 | |
| 2465 | emx_setup_rxdesc(&rdata->rx_desc[i], rx_buffer); |
| 2466 | return (0); |
| 2467 | } |
| 2468 | |
| 2469 | static int |
| 2470 | emx_create_rx_ring(struct emx_softc *sc, struct emx_rxdata *rdata) |
| 2471 | { |
| 2472 | device_t dev = sc->dev; |
| 2473 | struct emx_rxbuf *rx_buffer; |
| 2474 | int i, error, rsize; |
| 2475 | |
| 2476 | /* |
| 2477 | * Validate number of receive descriptors. It must not exceed |
| 2478 | * hardware maximum, and must be multiple of E1000_DBA_ALIGN. |
| 2479 | */ |
| 2480 | if ((emx_rxd * sizeof(emx_rxdesc_t)) % EMX_DBA_ALIGN != 0 || |
| 2481 | emx_rxd > EMX_MAX_RXD || emx_rxd < EMX_MIN_RXD) { |
| 2482 | device_printf(dev, "Using %d RX descriptors instead of %d!\n", |
| 2483 | EMX_DEFAULT_RXD, emx_rxd); |
| 2484 | rdata->num_rx_desc = EMX_DEFAULT_RXD; |
| 2485 | } else { |
| 2486 | rdata->num_rx_desc = emx_rxd; |
| 2487 | } |
| 2488 | |
| 2489 | /* |
| 2490 | * Allocate Receive Descriptor ring |
| 2491 | */ |
| 2492 | rsize = roundup2(rdata->num_rx_desc * sizeof(emx_rxdesc_t), |
| 2493 | EMX_DBA_ALIGN); |
| 2494 | rdata->rx_desc = bus_dmamem_coherent_any(sc->parent_dtag, |
| 2495 | EMX_DBA_ALIGN, rsize, BUS_DMA_WAITOK, |
| 2496 | &rdata->rx_desc_dtag, &rdata->rx_desc_dmap, |
| 2497 | &rdata->rx_desc_paddr); |
| 2498 | if (rdata->rx_desc == NULL) { |
| 2499 | device_printf(dev, "Unable to allocate rx_desc memory\n"); |
| 2500 | return ENOMEM; |
| 2501 | } |
| 2502 | |
| 2503 | rdata->rx_buf = kmalloc(sizeof(struct emx_rxbuf) * rdata->num_rx_desc, |
| 2504 | M_DEVBUF, M_WAITOK | M_ZERO); |
| 2505 | |
| 2506 | /* |
| 2507 | * Create DMA tag for rx buffers |
| 2508 | */ |
| 2509 | error = bus_dma_tag_create(sc->parent_dtag, /* parent */ |
| 2510 | 1, 0, /* alignment, bounds */ |
| 2511 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 2512 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 2513 | NULL, NULL, /* filter, filterarg */ |
| 2514 | MCLBYTES, /* maxsize */ |
| 2515 | 1, /* nsegments */ |
| 2516 | MCLBYTES, /* maxsegsize */ |
| 2517 | BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */ |
| 2518 | &rdata->rxtag); |
| 2519 | if (error) { |
| 2520 | device_printf(dev, "Unable to allocate RX DMA tag\n"); |
| 2521 | kfree(rdata->rx_buf, M_DEVBUF); |
| 2522 | rdata->rx_buf = NULL; |
| 2523 | return error; |
| 2524 | } |
| 2525 | |
| 2526 | /* |
| 2527 | * Create spare DMA map for rx buffers |
| 2528 | */ |
| 2529 | error = bus_dmamap_create(rdata->rxtag, BUS_DMA_WAITOK, |
| 2530 | &rdata->rx_sparemap); |
| 2531 | if (error) { |
| 2532 | device_printf(dev, "Unable to create spare RX DMA map\n"); |
| 2533 | bus_dma_tag_destroy(rdata->rxtag); |
| 2534 | kfree(rdata->rx_buf, M_DEVBUF); |
| 2535 | rdata->rx_buf = NULL; |
| 2536 | return error; |
| 2537 | } |
| 2538 | |
| 2539 | /* |
| 2540 | * Create DMA maps for rx buffers |
| 2541 | */ |
| 2542 | for (i = 0; i < rdata->num_rx_desc; i++) { |
| 2543 | rx_buffer = &rdata->rx_buf[i]; |
| 2544 | |
| 2545 | error = bus_dmamap_create(rdata->rxtag, BUS_DMA_WAITOK, |
| 2546 | &rx_buffer->map); |
| 2547 | if (error) { |
| 2548 | device_printf(dev, "Unable to create RX DMA map\n"); |
| 2549 | emx_destroy_rx_ring(sc, rdata, i); |
| 2550 | return error; |
| 2551 | } |
| 2552 | } |
| 2553 | return (0); |
| 2554 | } |
| 2555 | |
| 2556 | static void |
| 2557 | emx_free_rx_ring(struct emx_softc *sc, struct emx_rxdata *rdata) |
| 2558 | { |
| 2559 | int i; |
| 2560 | |
| 2561 | for (i = 0; i < rdata->num_rx_desc; i++) { |
| 2562 | struct emx_rxbuf *rx_buffer = &rdata->rx_buf[i]; |
| 2563 | |
| 2564 | if (rx_buffer->m_head != NULL) { |
| 2565 | bus_dmamap_unload(rdata->rxtag, rx_buffer->map); |
| 2566 | m_freem(rx_buffer->m_head); |
| 2567 | rx_buffer->m_head = NULL; |
| 2568 | } |
| 2569 | } |
| 2570 | |
| 2571 | if (rdata->fmp != NULL) |
| 2572 | m_freem(rdata->fmp); |
| 2573 | rdata->fmp = NULL; |
| 2574 | rdata->lmp = NULL; |
| 2575 | } |
| 2576 | |
| 2577 | static int |
| 2578 | emx_init_rx_ring(struct emx_softc *sc, struct emx_rxdata *rdata) |
| 2579 | { |
| 2580 | int i, error; |
| 2581 | |
| 2582 | /* Reset descriptor ring */ |
| 2583 | bzero(rdata->rx_desc, sizeof(emx_rxdesc_t) * rdata->num_rx_desc); |
| 2584 | |
| 2585 | /* Allocate new ones. */ |
| 2586 | for (i = 0; i < rdata->num_rx_desc; i++) { |
| 2587 | error = emx_newbuf(sc, rdata, i, 1); |
| 2588 | if (error) |
| 2589 | return (error); |
| 2590 | } |
| 2591 | |
| 2592 | /* Setup our descriptor pointers */ |
| 2593 | rdata->next_rx_desc_to_check = 0; |
| 2594 | |
| 2595 | return (0); |
| 2596 | } |
| 2597 | |
| 2598 | static void |
| 2599 | emx_init_rx_unit(struct emx_softc *sc) |
| 2600 | { |
| 2601 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 2602 | uint64_t bus_addr; |
| 2603 | uint32_t rctl, rxcsum, rfctl; |
| 2604 | int i; |
| 2605 | |
| 2606 | /* |
| 2607 | * Make sure receives are disabled while setting |
| 2608 | * up the descriptor ring |
| 2609 | */ |
| 2610 | rctl = E1000_READ_REG(&sc->hw, E1000_RCTL); |
| 2611 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, rctl & ~E1000_RCTL_EN); |
| 2612 | |
| 2613 | /* |
| 2614 | * Set the interrupt throttling rate. Value is calculated |
| 2615 | * as ITR = 1 / (INT_THROTTLE_CEIL * 256ns) |
| 2616 | */ |
| 2617 | if (sc->int_throttle_ceil) { |
| 2618 | E1000_WRITE_REG(&sc->hw, E1000_ITR, |
| 2619 | 1000000000 / 256 / sc->int_throttle_ceil); |
| 2620 | } else { |
| 2621 | E1000_WRITE_REG(&sc->hw, E1000_ITR, 0); |
| 2622 | } |
| 2623 | |
| 2624 | /* Use extended RX descriptor */ |
| 2625 | rfctl = E1000_RFCTL_EXTEN; |
| 2626 | |
| 2627 | /* Disable accelerated ackknowledge */ |
| 2628 | if (sc->hw.mac.type == e1000_82574) |
| 2629 | rfctl |= E1000_RFCTL_ACK_DIS; |
| 2630 | |
| 2631 | E1000_WRITE_REG(&sc->hw, E1000_RFCTL, rfctl); |
| 2632 | |
| 2633 | /* Setup the Base and Length of the Rx Descriptor Ring */ |
| 2634 | for (i = 0; i < sc->rx_ring_inuse; ++i) { |
| 2635 | struct emx_rxdata *rdata = &sc->rx_data[i]; |
| 2636 | |
| 2637 | bus_addr = rdata->rx_desc_paddr; |
| 2638 | E1000_WRITE_REG(&sc->hw, E1000_RDLEN(i), |
| 2639 | rdata->num_rx_desc * sizeof(emx_rxdesc_t)); |
| 2640 | E1000_WRITE_REG(&sc->hw, E1000_RDBAH(i), |
| 2641 | (uint32_t)(bus_addr >> 32)); |
| 2642 | E1000_WRITE_REG(&sc->hw, E1000_RDBAL(i), |
| 2643 | (uint32_t)bus_addr); |
| 2644 | } |
| 2645 | |
| 2646 | /* Setup the Receive Control Register */ |
| 2647 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); |
| 2648 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO | |
| 2649 | E1000_RCTL_RDMTS_HALF | E1000_RCTL_SECRC | |
| 2650 | (sc->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
| 2651 | |
| 2652 | /* Make sure VLAN Filters are off */ |
| 2653 | rctl &= ~E1000_RCTL_VFE; |
| 2654 | |
| 2655 | /* Don't store bad paket */ |
| 2656 | rctl &= ~E1000_RCTL_SBP; |
| 2657 | |
| 2658 | /* MCLBYTES */ |
| 2659 | rctl |= E1000_RCTL_SZ_2048; |
| 2660 | |
| 2661 | if (ifp->if_mtu > ETHERMTU) |
| 2662 | rctl |= E1000_RCTL_LPE; |
| 2663 | else |
| 2664 | rctl &= ~E1000_RCTL_LPE; |
| 2665 | |
| 2666 | /* |
| 2667 | * Receive Checksum Offload for TCP and UDP |
| 2668 | * |
| 2669 | * Checksum offloading is also enabled if multiple receive |
| 2670 | * queue is to be supported, since we need it to figure out |
| 2671 | * packet type. |
| 2672 | */ |
| 2673 | if (ifp->if_capenable & (IFCAP_RSS | IFCAP_RXCSUM)) { |
| 2674 | rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM); |
| 2675 | |
| 2676 | /* |
| 2677 | * NOTE: |
| 2678 | * PCSD must be enabled to enable multiple |
| 2679 | * receive queues. |
| 2680 | */ |
| 2681 | rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL | |
| 2682 | E1000_RXCSUM_PCSD; |
| 2683 | E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum); |
| 2684 | } |
| 2685 | |
| 2686 | /* |
| 2687 | * Configure multiple receive queue (RSS) |
| 2688 | */ |
| 2689 | if (ifp->if_capenable & IFCAP_RSS) { |
| 2690 | uint8_t key[EMX_NRSSRK * EMX_RSSRK_SIZE]; |
| 2691 | uint32_t reta; |
| 2692 | |
| 2693 | KASSERT(sc->rx_ring_inuse == EMX_NRX_RING, |
| 2694 | ("invalid number of RX ring (%d)", |
| 2695 | sc->rx_ring_inuse)); |
| 2696 | |
| 2697 | /* |
| 2698 | * NOTE: |
| 2699 | * When we reach here, RSS has already been disabled |
| 2700 | * in emx_stop(), so we could safely configure RSS key |
| 2701 | * and redirect table. |
| 2702 | */ |
| 2703 | |
| 2704 | /* |
| 2705 | * Configure RSS key |
| 2706 | */ |
| 2707 | toeplitz_get_key(key, sizeof(key)); |
| 2708 | for (i = 0; i < EMX_NRSSRK; ++i) { |
| 2709 | uint32_t rssrk; |
| 2710 | |
| 2711 | rssrk = EMX_RSSRK_VAL(key, i); |
| 2712 | EMX_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk); |
| 2713 | |
| 2714 | E1000_WRITE_REG(&sc->hw, E1000_RSSRK(i), rssrk); |
| 2715 | } |
| 2716 | |
| 2717 | /* |
| 2718 | * Configure RSS redirect table in following fashion: |
| 2719 | * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)] |
| 2720 | */ |
| 2721 | reta = 0; |
| 2722 | for (i = 0; i < EMX_RETA_SIZE; ++i) { |
| 2723 | uint32_t q; |
| 2724 | |
| 2725 | q = (i % sc->rx_ring_inuse) << EMX_RETA_RINGIDX_SHIFT; |
| 2726 | reta |= q << (8 * i); |
| 2727 | } |
| 2728 | EMX_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta); |
| 2729 | |
| 2730 | for (i = 0; i < EMX_NRETA; ++i) |
| 2731 | E1000_WRITE_REG(&sc->hw, E1000_RETA(i), reta); |
| 2732 | |
| 2733 | /* |
| 2734 | * Enable multiple receive queues. |
| 2735 | * Enable IPv4 RSS standard hash functions. |
| 2736 | * Disable RSS interrupt. |
| 2737 | */ |
| 2738 | E1000_WRITE_REG(&sc->hw, E1000_MRQC, |
| 2739 | E1000_MRQC_ENABLE_RSS_2Q | |
| 2740 | E1000_MRQC_RSS_FIELD_IPV4_TCP | |
| 2741 | E1000_MRQC_RSS_FIELD_IPV4); |
| 2742 | } |
| 2743 | |
| 2744 | /* |
| 2745 | * XXX TEMPORARY WORKAROUND: on some systems with 82573 |
| 2746 | * long latencies are observed, like Lenovo X60. This |
| 2747 | * change eliminates the problem, but since having positive |
| 2748 | * values in RDTR is a known source of problems on other |
| 2749 | * platforms another solution is being sought. |
| 2750 | */ |
| 2751 | if (emx_82573_workaround && sc->hw.mac.type == e1000_82573) { |
| 2752 | E1000_WRITE_REG(&sc->hw, E1000_RADV, EMX_RADV_82573); |
| 2753 | E1000_WRITE_REG(&sc->hw, E1000_RDTR, EMX_RDTR_82573); |
| 2754 | } |
| 2755 | |
| 2756 | /* |
| 2757 | * Setup the HW Rx Head and Tail Descriptor Pointers |
| 2758 | */ |
| 2759 | for (i = 0; i < sc->rx_ring_inuse; ++i) { |
| 2760 | E1000_WRITE_REG(&sc->hw, E1000_RDH(i), 0); |
| 2761 | E1000_WRITE_REG(&sc->hw, E1000_RDT(i), |
| 2762 | sc->rx_data[i].num_rx_desc - 1); |
| 2763 | } |
| 2764 | |
| 2765 | /* Enable Receives */ |
| 2766 | E1000_WRITE_REG(&sc->hw, E1000_RCTL, rctl); |
| 2767 | } |
| 2768 | |
| 2769 | static void |
| 2770 | emx_destroy_rx_ring(struct emx_softc *sc, struct emx_rxdata *rdata, int ndesc) |
| 2771 | { |
| 2772 | struct emx_rxbuf *rx_buffer; |
| 2773 | int i; |
| 2774 | |
| 2775 | /* Free Receive Descriptor ring */ |
| 2776 | if (rdata->rx_desc) { |
| 2777 | bus_dmamap_unload(rdata->rx_desc_dtag, rdata->rx_desc_dmap); |
| 2778 | bus_dmamem_free(rdata->rx_desc_dtag, rdata->rx_desc, |
| 2779 | rdata->rx_desc_dmap); |
| 2780 | bus_dma_tag_destroy(rdata->rx_desc_dtag); |
| 2781 | |
| 2782 | rdata->rx_desc = NULL; |
| 2783 | } |
| 2784 | |
| 2785 | if (rdata->rx_buf == NULL) |
| 2786 | return; |
| 2787 | |
| 2788 | for (i = 0; i < ndesc; i++) { |
| 2789 | rx_buffer = &rdata->rx_buf[i]; |
| 2790 | |
| 2791 | KKASSERT(rx_buffer->m_head == NULL); |
| 2792 | bus_dmamap_destroy(rdata->rxtag, rx_buffer->map); |
| 2793 | } |
| 2794 | bus_dmamap_destroy(rdata->rxtag, rdata->rx_sparemap); |
| 2795 | bus_dma_tag_destroy(rdata->rxtag); |
| 2796 | |
| 2797 | kfree(rdata->rx_buf, M_DEVBUF); |
| 2798 | rdata->rx_buf = NULL; |
| 2799 | } |
| 2800 | |
| 2801 | static void |
| 2802 | emx_rxeof(struct emx_softc *sc, int ring_idx, int count) |
| 2803 | { |
| 2804 | struct emx_rxdata *rdata = &sc->rx_data[ring_idx]; |
| 2805 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 2806 | uint32_t staterr; |
| 2807 | emx_rxdesc_t *current_desc; |
| 2808 | struct mbuf *mp; |
| 2809 | int i; |
| 2810 | struct mbuf_chain chain[MAXCPU]; |
| 2811 | |
| 2812 | i = rdata->next_rx_desc_to_check; |
| 2813 | current_desc = &rdata->rx_desc[i]; |
| 2814 | staterr = le32toh(current_desc->rxd_staterr); |
| 2815 | |
| 2816 | if (!(staterr & E1000_RXD_STAT_DD)) |
| 2817 | return; |
| 2818 | |
| 2819 | ether_input_chain_init(chain); |
| 2820 | |
| 2821 | while ((staterr & E1000_RXD_STAT_DD) && count != 0) { |
| 2822 | struct pktinfo *pi = NULL, pi0; |
| 2823 | struct emx_rxbuf *rx_buf = &rdata->rx_buf[i]; |
| 2824 | struct mbuf *m = NULL; |
| 2825 | int eop, len; |
| 2826 | |
| 2827 | logif(pkt_receive); |
| 2828 | |
| 2829 | mp = rx_buf->m_head; |
| 2830 | |
| 2831 | /* |
| 2832 | * Can't defer bus_dmamap_sync(9) because TBI_ACCEPT |
| 2833 | * needs to access the last received byte in the mbuf. |
| 2834 | */ |
| 2835 | bus_dmamap_sync(rdata->rxtag, rx_buf->map, |
| 2836 | BUS_DMASYNC_POSTREAD); |
| 2837 | |
| 2838 | len = le16toh(current_desc->rxd_length); |
| 2839 | if (staterr & E1000_RXD_STAT_EOP) { |
| 2840 | count--; |
| 2841 | eop = 1; |
| 2842 | } else { |
| 2843 | eop = 0; |
| 2844 | } |
| 2845 | |
| 2846 | if (!(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
| 2847 | uint16_t vlan = 0; |
| 2848 | uint32_t mrq, rss_hash; |
| 2849 | |
| 2850 | /* |
| 2851 | * Save several necessary information, |
| 2852 | * before emx_newbuf() destroy it. |
| 2853 | */ |
| 2854 | if ((staterr & E1000_RXD_STAT_VP) && eop) |
| 2855 | vlan = le16toh(current_desc->rxd_vlan); |
| 2856 | |
| 2857 | mrq = le32toh(current_desc->rxd_mrq); |
| 2858 | rss_hash = le32toh(current_desc->rxd_rss); |
| 2859 | |
| 2860 | EMX_RSS_DPRINTF(sc, 10, |
| 2861 | "ring%d, mrq 0x%08x, rss_hash 0x%08x\n", |
| 2862 | ring_idx, mrq, rss_hash); |
| 2863 | |
| 2864 | if (emx_newbuf(sc, rdata, i, 0) != 0) { |
| 2865 | ifp->if_iqdrops++; |
| 2866 | goto discard; |
| 2867 | } |
| 2868 | |
| 2869 | /* Assign correct length to the current fragment */ |
| 2870 | mp->m_len = len; |
| 2871 | |
| 2872 | if (rdata->fmp == NULL) { |
| 2873 | mp->m_pkthdr.len = len; |
| 2874 | rdata->fmp = mp; /* Store the first mbuf */ |
| 2875 | rdata->lmp = mp; |
| 2876 | } else { |
| 2877 | /* |
| 2878 | * Chain mbuf's together |
| 2879 | */ |
| 2880 | rdata->lmp->m_next = mp; |
| 2881 | rdata->lmp = rdata->lmp->m_next; |
| 2882 | rdata->fmp->m_pkthdr.len += len; |
| 2883 | } |
| 2884 | |
| 2885 | if (eop) { |
| 2886 | rdata->fmp->m_pkthdr.rcvif = ifp; |
| 2887 | ifp->if_ipackets++; |
| 2888 | |
| 2889 | if (ifp->if_capenable & IFCAP_RXCSUM) |
| 2890 | emx_rxcsum(staterr, rdata->fmp); |
| 2891 | |
| 2892 | if (staterr & E1000_RXD_STAT_VP) { |
| 2893 | rdata->fmp->m_pkthdr.ether_vlantag = |
| 2894 | vlan; |
| 2895 | rdata->fmp->m_flags |= M_VLANTAG; |
| 2896 | } |
| 2897 | m = rdata->fmp; |
| 2898 | rdata->fmp = NULL; |
| 2899 | rdata->lmp = NULL; |
| 2900 | |
| 2901 | if (ifp->if_capenable & IFCAP_RSS) { |
| 2902 | pi = emx_rssinfo(m, &pi0, mrq, |
| 2903 | rss_hash, staterr); |
| 2904 | } |
| 2905 | #ifdef EMX_RSS_DEBUG |
| 2906 | rdata->rx_pkts++; |
| 2907 | #endif |
| 2908 | } |
| 2909 | } else { |
| 2910 | ifp->if_ierrors++; |
| 2911 | discard: |
| 2912 | emx_setup_rxdesc(current_desc, rx_buf); |
| 2913 | if (rdata->fmp != NULL) { |
| 2914 | m_freem(rdata->fmp); |
| 2915 | rdata->fmp = NULL; |
| 2916 | rdata->lmp = NULL; |
| 2917 | } |
| 2918 | m = NULL; |
| 2919 | } |
| 2920 | |
| 2921 | if (m != NULL) |
| 2922 | ether_input_chain(ifp, m, pi, chain); |
| 2923 | |
| 2924 | /* Advance our pointers to the next descriptor. */ |
| 2925 | if (++i == rdata->num_rx_desc) |
| 2926 | i = 0; |
| 2927 | |
| 2928 | current_desc = &rdata->rx_desc[i]; |
| 2929 | staterr = le32toh(current_desc->rxd_staterr); |
| 2930 | } |
| 2931 | rdata->next_rx_desc_to_check = i; |
| 2932 | |
| 2933 | ether_input_dispatch(chain); |
| 2934 | |
| 2935 | /* Advance the E1000's Receive Queue "Tail Pointer". */ |
| 2936 | if (--i < 0) |
| 2937 | i = rdata->num_rx_desc - 1; |
| 2938 | E1000_WRITE_REG(&sc->hw, E1000_RDT(ring_idx), i); |
| 2939 | } |
| 2940 | |
| 2941 | static void |
| 2942 | emx_enable_intr(struct emx_softc *sc) |
| 2943 | { |
| 2944 | lwkt_serialize_handler_enable(&sc->main_serialize); |
| 2945 | E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK); |
| 2946 | } |
| 2947 | |
| 2948 | static void |
| 2949 | emx_disable_intr(struct emx_softc *sc) |
| 2950 | { |
| 2951 | E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff); |
| 2952 | lwkt_serialize_handler_disable(&sc->main_serialize); |
| 2953 | } |
| 2954 | |
| 2955 | /* |
| 2956 | * Bit of a misnomer, what this really means is |
| 2957 | * to enable OS management of the system... aka |
| 2958 | * to disable special hardware management features |
| 2959 | */ |
| 2960 | static void |
| 2961 | emx_get_mgmt(struct emx_softc *sc) |
| 2962 | { |
| 2963 | /* A shared code workaround */ |
| 2964 | if (sc->has_manage) { |
| 2965 | int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H); |
| 2966 | int manc = E1000_READ_REG(&sc->hw, E1000_MANC); |
| 2967 | |
| 2968 | /* disable hardware interception of ARP */ |
| 2969 | manc &= ~(E1000_MANC_ARP_EN); |
| 2970 | |
| 2971 | /* enable receiving management packets to the host */ |
| 2972 | manc |= E1000_MANC_EN_MNG2HOST; |
| 2973 | #define E1000_MNG2HOST_PORT_623 (1 << 5) |
| 2974 | #define E1000_MNG2HOST_PORT_664 (1 << 6) |
| 2975 | manc2h |= E1000_MNG2HOST_PORT_623; |
| 2976 | manc2h |= E1000_MNG2HOST_PORT_664; |
| 2977 | E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h); |
| 2978 | |
| 2979 | E1000_WRITE_REG(&sc->hw, E1000_MANC, manc); |
| 2980 | } |
| 2981 | } |
| 2982 | |
| 2983 | /* |
| 2984 | * Give control back to hardware management |
| 2985 | * controller if there is one. |
| 2986 | */ |
| 2987 | static void |
| 2988 | emx_rel_mgmt(struct emx_softc *sc) |
| 2989 | { |
| 2990 | if (sc->has_manage) { |
| 2991 | int manc = E1000_READ_REG(&sc->hw, E1000_MANC); |
| 2992 | |
| 2993 | /* re-enable hardware interception of ARP */ |
| 2994 | manc |= E1000_MANC_ARP_EN; |
| 2995 | manc &= ~E1000_MANC_EN_MNG2HOST; |
| 2996 | |
| 2997 | E1000_WRITE_REG(&sc->hw, E1000_MANC, manc); |
| 2998 | } |
| 2999 | } |
| 3000 | |
| 3001 | /* |
| 3002 | * emx_get_hw_control() sets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
| 3003 | * For ASF and Pass Through versions of f/w this means that |
| 3004 | * the driver is loaded. For AMT version (only with 82573) |
| 3005 | * of the f/w this means that the network i/f is open. |
| 3006 | */ |
| 3007 | static void |
| 3008 | emx_get_hw_control(struct emx_softc *sc) |
| 3009 | { |
| 3010 | uint32_t ctrl_ext, swsm; |
| 3011 | |
| 3012 | /* Let firmware know the driver has taken over */ |
| 3013 | switch (sc->hw.mac.type) { |
| 3014 | case e1000_82573: |
| 3015 | swsm = E1000_READ_REG(&sc->hw, E1000_SWSM); |
| 3016 | E1000_WRITE_REG(&sc->hw, E1000_SWSM, |
| 3017 | swsm | E1000_SWSM_DRV_LOAD); |
| 3018 | break; |
| 3019 | |
| 3020 | case e1000_82571: |
| 3021 | case e1000_82572: |
| 3022 | case e1000_80003es2lan: |
| 3023 | ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT); |
| 3024 | E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT, |
| 3025 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
| 3026 | break; |
| 3027 | |
| 3028 | default: |
| 3029 | break; |
| 3030 | } |
| 3031 | } |
| 3032 | |
| 3033 | /* |
| 3034 | * emx_rel_hw_control() resets {CTRL_EXT|FWSM}:DRV_LOAD bit. |
| 3035 | * For ASF and Pass Through versions of f/w this means that the |
| 3036 | * driver is no longer loaded. For AMT version (only with 82573) |
| 3037 | * of the f/w this means that the network i/f is closed. |
| 3038 | */ |
| 3039 | static void |
| 3040 | emx_rel_hw_control(struct emx_softc *sc) |
| 3041 | { |
| 3042 | uint32_t ctrl_ext, swsm; |
| 3043 | |
| 3044 | /* Let firmware taken over control of h/w */ |
| 3045 | switch (sc->hw.mac.type) { |
| 3046 | case e1000_82573: |
| 3047 | swsm = E1000_READ_REG(&sc->hw, E1000_SWSM); |
| 3048 | E1000_WRITE_REG(&sc->hw, E1000_SWSM, |
| 3049 | swsm & ~E1000_SWSM_DRV_LOAD); |
| 3050 | break; |
| 3051 | |
| 3052 | case e1000_82571: |
| 3053 | case e1000_82572: |
| 3054 | case e1000_80003es2lan: |
| 3055 | ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT); |
| 3056 | E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT, |
| 3057 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
| 3058 | break; |
| 3059 | |
| 3060 | default: |
| 3061 | break; |
| 3062 | } |
| 3063 | } |
| 3064 | |
| 3065 | static int |
| 3066 | emx_is_valid_eaddr(const uint8_t *addr) |
| 3067 | { |
| 3068 | char zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 }; |
| 3069 | |
| 3070 | if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN)) |
| 3071 | return (FALSE); |
| 3072 | |
| 3073 | return (TRUE); |
| 3074 | } |
| 3075 | |
| 3076 | /* |
| 3077 | * Enable PCI Wake On Lan capability |
| 3078 | */ |
| 3079 | void |
| 3080 | emx_enable_wol(device_t dev) |
| 3081 | { |
| 3082 | uint16_t cap, status; |
| 3083 | uint8_t id; |
| 3084 | |
| 3085 | /* First find the capabilities pointer*/ |
| 3086 | cap = pci_read_config(dev, PCIR_CAP_PTR, 2); |
| 3087 | |
| 3088 | /* Read the PM Capabilities */ |
| 3089 | id = pci_read_config(dev, cap, 1); |
| 3090 | if (id != PCIY_PMG) /* Something wrong */ |
| 3091 | return; |
| 3092 | |
| 3093 | /* |
| 3094 | * OK, we have the power capabilities, |
| 3095 | * so now get the status register |
| 3096 | */ |
| 3097 | cap += PCIR_POWER_STATUS; |
| 3098 | status = pci_read_config(dev, cap, 2); |
| 3099 | status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; |
| 3100 | pci_write_config(dev, cap, status, 2); |
| 3101 | } |
| 3102 | |
| 3103 | static void |
| 3104 | emx_update_stats(struct emx_softc *sc) |
| 3105 | { |
| 3106 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 3107 | |
| 3108 | if (sc->hw.phy.media_type == e1000_media_type_copper || |
| 3109 | (E1000_READ_REG(&sc->hw, E1000_STATUS) & E1000_STATUS_LU)) { |
| 3110 | sc->stats.symerrs += E1000_READ_REG(&sc->hw, E1000_SYMERRS); |
| 3111 | sc->stats.sec += E1000_READ_REG(&sc->hw, E1000_SEC); |
| 3112 | } |
| 3113 | sc->stats.crcerrs += E1000_READ_REG(&sc->hw, E1000_CRCERRS); |
| 3114 | sc->stats.mpc += E1000_READ_REG(&sc->hw, E1000_MPC); |
| 3115 | sc->stats.scc += E1000_READ_REG(&sc->hw, E1000_SCC); |
| 3116 | sc->stats.ecol += E1000_READ_REG(&sc->hw, E1000_ECOL); |
| 3117 | |
| 3118 | sc->stats.mcc += E1000_READ_REG(&sc->hw, E1000_MCC); |
| 3119 | sc->stats.latecol += E1000_READ_REG(&sc->hw, E1000_LATECOL); |
| 3120 | sc->stats.colc += E1000_READ_REG(&sc->hw, E1000_COLC); |
| 3121 | sc->stats.dc += E1000_READ_REG(&sc->hw, E1000_DC); |
| 3122 | sc->stats.rlec += E1000_READ_REG(&sc->hw, E1000_RLEC); |
| 3123 | sc->stats.xonrxc += E1000_READ_REG(&sc->hw, E1000_XONRXC); |
| 3124 | sc->stats.xontxc += E1000_READ_REG(&sc->hw, E1000_XONTXC); |
| 3125 | sc->stats.xoffrxc += E1000_READ_REG(&sc->hw, E1000_XOFFRXC); |
| 3126 | sc->stats.xofftxc += E1000_READ_REG(&sc->hw, E1000_XOFFTXC); |
| 3127 | sc->stats.fcruc += E1000_READ_REG(&sc->hw, E1000_FCRUC); |
| 3128 | sc->stats.prc64 += E1000_READ_REG(&sc->hw, E1000_PRC64); |
| 3129 | sc->stats.prc127 += E1000_READ_REG(&sc->hw, E1000_PRC127); |
| 3130 | sc->stats.prc255 += E1000_READ_REG(&sc->hw, E1000_PRC255); |
| 3131 | sc->stats.prc511 += E1000_READ_REG(&sc->hw, E1000_PRC511); |
| 3132 | sc->stats.prc1023 += E1000_READ_REG(&sc->hw, E1000_PRC1023); |
| 3133 | sc->stats.prc1522 += E1000_READ_REG(&sc->hw, E1000_PRC1522); |
| 3134 | sc->stats.gprc += E1000_READ_REG(&sc->hw, E1000_GPRC); |
| 3135 | sc->stats.bprc += E1000_READ_REG(&sc->hw, E1000_BPRC); |
| 3136 | sc->stats.mprc += E1000_READ_REG(&sc->hw, E1000_MPRC); |
| 3137 | sc->stats.gptc += E1000_READ_REG(&sc->hw, E1000_GPTC); |
| 3138 | |
| 3139 | /* For the 64-bit byte counters the low dword must be read first. */ |
| 3140 | /* Both registers clear on the read of the high dword */ |
| 3141 | |
| 3142 | sc->stats.gorc += E1000_READ_REG(&sc->hw, E1000_GORCH); |
| 3143 | sc->stats.gotc += E1000_READ_REG(&sc->hw, E1000_GOTCH); |
| 3144 | |
| 3145 | sc->stats.rnbc += E1000_READ_REG(&sc->hw, E1000_RNBC); |
| 3146 | sc->stats.ruc += E1000_READ_REG(&sc->hw, E1000_RUC); |
| 3147 | sc->stats.rfc += E1000_READ_REG(&sc->hw, E1000_RFC); |
| 3148 | sc->stats.roc += E1000_READ_REG(&sc->hw, E1000_ROC); |
| 3149 | sc->stats.rjc += E1000_READ_REG(&sc->hw, E1000_RJC); |
| 3150 | |
| 3151 | sc->stats.tor += E1000_READ_REG(&sc->hw, E1000_TORH); |
| 3152 | sc->stats.tot += E1000_READ_REG(&sc->hw, E1000_TOTH); |
| 3153 | |
| 3154 | sc->stats.tpr += E1000_READ_REG(&sc->hw, E1000_TPR); |
| 3155 | sc->stats.tpt += E1000_READ_REG(&sc->hw, E1000_TPT); |
| 3156 | sc->stats.ptc64 += E1000_READ_REG(&sc->hw, E1000_PTC64); |
| 3157 | sc->stats.ptc127 += E1000_READ_REG(&sc->hw, E1000_PTC127); |
| 3158 | sc->stats.ptc255 += E1000_READ_REG(&sc->hw, E1000_PTC255); |
| 3159 | sc->stats.ptc511 += E1000_READ_REG(&sc->hw, E1000_PTC511); |
| 3160 | sc->stats.ptc1023 += E1000_READ_REG(&sc->hw, E1000_PTC1023); |
| 3161 | sc->stats.ptc1522 += E1000_READ_REG(&sc->hw, E1000_PTC1522); |
| 3162 | sc->stats.mptc += E1000_READ_REG(&sc->hw, E1000_MPTC); |
| 3163 | sc->stats.bptc += E1000_READ_REG(&sc->hw, E1000_BPTC); |
| 3164 | |
| 3165 | sc->stats.algnerrc += E1000_READ_REG(&sc->hw, E1000_ALGNERRC); |
| 3166 | sc->stats.rxerrc += E1000_READ_REG(&sc->hw, E1000_RXERRC); |
| 3167 | sc->stats.tncrs += E1000_READ_REG(&sc->hw, E1000_TNCRS); |
| 3168 | sc->stats.cexterr += E1000_READ_REG(&sc->hw, E1000_CEXTERR); |
| 3169 | sc->stats.tsctc += E1000_READ_REG(&sc->hw, E1000_TSCTC); |
| 3170 | sc->stats.tsctfc += E1000_READ_REG(&sc->hw, E1000_TSCTFC); |
| 3171 | |
| 3172 | ifp->if_collisions = sc->stats.colc; |
| 3173 | |
| 3174 | /* Rx Errors */ |
| 3175 | ifp->if_ierrors = sc->dropped_pkts + sc->stats.rxerrc + |
| 3176 | sc->stats.crcerrs + sc->stats.algnerrc + |
| 3177 | sc->stats.ruc + sc->stats.roc + |
| 3178 | sc->stats.mpc + sc->stats.cexterr; |
| 3179 | |
| 3180 | /* Tx Errors */ |
| 3181 | ifp->if_oerrors = sc->stats.ecol + sc->stats.latecol + |
| 3182 | sc->watchdog_events; |
| 3183 | } |
| 3184 | |
| 3185 | static void |
| 3186 | emx_print_debug_info(struct emx_softc *sc) |
| 3187 | { |
| 3188 | device_t dev = sc->dev; |
| 3189 | uint8_t *hw_addr = sc->hw.hw_addr; |
| 3190 | |
| 3191 | device_printf(dev, "Adapter hardware address = %p \n", hw_addr); |
| 3192 | device_printf(dev, "CTRL = 0x%x RCTL = 0x%x \n", |
| 3193 | E1000_READ_REG(&sc->hw, E1000_CTRL), |
| 3194 | E1000_READ_REG(&sc->hw, E1000_RCTL)); |
| 3195 | device_printf(dev, "Packet buffer = Tx=%dk Rx=%dk \n", |
| 3196 | ((E1000_READ_REG(&sc->hw, E1000_PBA) & 0xffff0000) >> 16),\ |
| 3197 | (E1000_READ_REG(&sc->hw, E1000_PBA) & 0xffff) ); |
| 3198 | device_printf(dev, "Flow control watermarks high = %d low = %d\n", |
| 3199 | sc->hw.fc.high_water, sc->hw.fc.low_water); |
| 3200 | device_printf(dev, "tx_int_delay = %d, tx_abs_int_delay = %d\n", |
| 3201 | E1000_READ_REG(&sc->hw, E1000_TIDV), |
| 3202 | E1000_READ_REG(&sc->hw, E1000_TADV)); |
| 3203 | device_printf(dev, "rx_int_delay = %d, rx_abs_int_delay = %d\n", |
| 3204 | E1000_READ_REG(&sc->hw, E1000_RDTR), |
| 3205 | E1000_READ_REG(&sc->hw, E1000_RADV)); |
| 3206 | device_printf(dev, "hw tdh = %d, hw tdt = %d\n", |
| 3207 | E1000_READ_REG(&sc->hw, E1000_TDH(0)), |
| 3208 | E1000_READ_REG(&sc->hw, E1000_TDT(0))); |
| 3209 | device_printf(dev, "hw rdh = %d, hw rdt = %d\n", |
| 3210 | E1000_READ_REG(&sc->hw, E1000_RDH(0)), |
| 3211 | E1000_READ_REG(&sc->hw, E1000_RDT(0))); |
| 3212 | device_printf(dev, "Num Tx descriptors avail = %d\n", |
| 3213 | sc->num_tx_desc_avail); |
| 3214 | device_printf(dev, "Tx Descriptors not avail1 = %ld\n", |
| 3215 | sc->no_tx_desc_avail1); |
| 3216 | device_printf(dev, "Tx Descriptors not avail2 = %ld\n", |
| 3217 | sc->no_tx_desc_avail2); |
| 3218 | device_printf(dev, "Std mbuf failed = %ld\n", |
| 3219 | sc->mbuf_alloc_failed); |
| 3220 | device_printf(dev, "Std mbuf cluster failed = %ld\n", |
| 3221 | sc->rx_data[0].mbuf_cluster_failed); |
| 3222 | device_printf(dev, "Driver dropped packets = %ld\n", |
| 3223 | sc->dropped_pkts); |
| 3224 | device_printf(dev, "Driver tx dma failure in encap = %ld\n", |
| 3225 | sc->no_tx_dma_setup); |
| 3226 | |
| 3227 | device_printf(dev, "TXCSUM try pullup = %lu\n", |
| 3228 | sc->tx_csum_try_pullup); |
| 3229 | device_printf(dev, "TXCSUM m_pullup(eh) called = %lu\n", |
| 3230 | sc->tx_csum_pullup1); |
| 3231 | device_printf(dev, "TXCSUM m_pullup(eh) failed = %lu\n", |
| 3232 | sc->tx_csum_pullup1_failed); |
| 3233 | device_printf(dev, "TXCSUM m_pullup(eh+ip) called = %lu\n", |
| 3234 | sc->tx_csum_pullup2); |
| 3235 | device_printf(dev, "TXCSUM m_pullup(eh+ip) failed = %lu\n", |
| 3236 | sc->tx_csum_pullup2_failed); |
| 3237 | device_printf(dev, "TXCSUM non-writable(eh) droped = %lu\n", |
| 3238 | sc->tx_csum_drop1); |
| 3239 | device_printf(dev, "TXCSUM non-writable(eh+ip) droped = %lu\n", |
| 3240 | sc->tx_csum_drop2); |
| 3241 | } |
| 3242 | |
| 3243 | static void |
| 3244 | emx_print_hw_stats(struct emx_softc *sc) |
| 3245 | { |
| 3246 | device_t dev = sc->dev; |
| 3247 | |
| 3248 | device_printf(dev, "Excessive collisions = %lld\n", |
| 3249 | (long long)sc->stats.ecol); |
| 3250 | #if (DEBUG_HW > 0) /* Dont output these errors normally */ |
| 3251 | device_printf(dev, "Symbol errors = %lld\n", |
| 3252 | (long long)sc->stats.symerrs); |
| 3253 | #endif |
| 3254 | device_printf(dev, "Sequence errors = %lld\n", |
| 3255 | (long long)sc->stats.sec); |
| 3256 | device_printf(dev, "Defer count = %lld\n", |
| 3257 | (long long)sc->stats.dc); |
| 3258 | device_printf(dev, "Missed Packets = %lld\n", |
| 3259 | (long long)sc->stats.mpc); |
| 3260 | device_printf(dev, "Receive No Buffers = %lld\n", |
| 3261 | (long long)sc->stats.rnbc); |
| 3262 | /* RLEC is inaccurate on some hardware, calculate our own. */ |
| 3263 | device_printf(dev, "Receive Length Errors = %lld\n", |
| 3264 | ((long long)sc->stats.roc + (long long)sc->stats.ruc)); |
| 3265 | device_printf(dev, "Receive errors = %lld\n", |
| 3266 | (long long)sc->stats.rxerrc); |
| 3267 | device_printf(dev, "Crc errors = %lld\n", |
| 3268 | (long long)sc->stats.crcerrs); |
| 3269 | device_printf(dev, "Alignment errors = %lld\n", |
| 3270 | (long long)sc->stats.algnerrc); |
| 3271 | device_printf(dev, "Collision/Carrier extension errors = %lld\n", |
| 3272 | (long long)sc->stats.cexterr); |
| 3273 | device_printf(dev, "RX overruns = %ld\n", sc->rx_overruns); |
| 3274 | device_printf(dev, "watchdog timeouts = %ld\n", |
| 3275 | sc->watchdog_events); |
| 3276 | device_printf(dev, "XON Rcvd = %lld\n", |
| 3277 | (long long)sc->stats.xonrxc); |
| 3278 | device_printf(dev, "XON Xmtd = %lld\n", |
| 3279 | (long long)sc->stats.xontxc); |
| 3280 | device_printf(dev, "XOFF Rcvd = %lld\n", |
| 3281 | (long long)sc->stats.xoffrxc); |
| 3282 | device_printf(dev, "XOFF Xmtd = %lld\n", |
| 3283 | (long long)sc->stats.xofftxc); |
| 3284 | device_printf(dev, "Good Packets Rcvd = %lld\n", |
| 3285 | (long long)sc->stats.gprc); |
| 3286 | device_printf(dev, "Good Packets Xmtd = %lld\n", |
| 3287 | (long long)sc->stats.gptc); |
| 3288 | } |
| 3289 | |
| 3290 | static void |
| 3291 | emx_print_nvm_info(struct emx_softc *sc) |
| 3292 | { |
| 3293 | uint16_t eeprom_data; |
| 3294 | int i, j, row = 0; |
| 3295 | |
| 3296 | /* Its a bit crude, but it gets the job done */ |
| 3297 | kprintf("\nInterface EEPROM Dump:\n"); |
| 3298 | kprintf("Offset\n0x0000 "); |
| 3299 | for (i = 0, j = 0; i < 32; i++, j++) { |
| 3300 | if (j == 8) { /* Make the offset block */ |
| 3301 | j = 0; ++row; |
| 3302 | kprintf("\n0x00%x0 ",row); |
| 3303 | } |
| 3304 | e1000_read_nvm(&sc->hw, i, 1, &eeprom_data); |
| 3305 | kprintf("%04x ", eeprom_data); |
| 3306 | } |
| 3307 | kprintf("\n"); |
| 3308 | } |
| 3309 | |
| 3310 | static int |
| 3311 | emx_sysctl_debug_info(SYSCTL_HANDLER_ARGS) |
| 3312 | { |
| 3313 | struct emx_softc *sc; |
| 3314 | struct ifnet *ifp; |
| 3315 | int error, result; |
| 3316 | |
| 3317 | result = -1; |
| 3318 | error = sysctl_handle_int(oidp, &result, 0, req); |
| 3319 | if (error || !req->newptr) |
| 3320 | return (error); |
| 3321 | |
| 3322 | sc = (struct emx_softc *)arg1; |
| 3323 | ifp = &sc->arpcom.ac_if; |
| 3324 | |
| 3325 | ifnet_serialize_all(ifp); |
| 3326 | |
| 3327 | if (result == 1) |
| 3328 | emx_print_debug_info(sc); |
| 3329 | |
| 3330 | /* |
| 3331 | * This value will cause a hex dump of the |
| 3332 | * first 32 16-bit words of the EEPROM to |
| 3333 | * the screen. |
| 3334 | */ |
| 3335 | if (result == 2) |
| 3336 | emx_print_nvm_info(sc); |
| 3337 | |
| 3338 | ifnet_deserialize_all(ifp); |
| 3339 | |
| 3340 | return (error); |
| 3341 | } |
| 3342 | |
| 3343 | static int |
| 3344 | emx_sysctl_stats(SYSCTL_HANDLER_ARGS) |
| 3345 | { |
| 3346 | int error, result; |
| 3347 | |
| 3348 | result = -1; |
| 3349 | error = sysctl_handle_int(oidp, &result, 0, req); |
| 3350 | if (error || !req->newptr) |
| 3351 | return (error); |
| 3352 | |
| 3353 | if (result == 1) { |
| 3354 | struct emx_softc *sc = (struct emx_softc *)arg1; |
| 3355 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 3356 | |
| 3357 | ifnet_serialize_all(ifp); |
| 3358 | emx_print_hw_stats(sc); |
| 3359 | ifnet_deserialize_all(ifp); |
| 3360 | } |
| 3361 | return (error); |
| 3362 | } |
| 3363 | |
| 3364 | static void |
| 3365 | emx_add_sysctl(struct emx_softc *sc) |
| 3366 | { |
| 3367 | #ifdef PROFILE_SERIALIZER |
| 3368 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 3369 | #endif |
| 3370 | #ifdef EMX_RSS_DEBUG |
| 3371 | char rx_pkt[32]; |
| 3372 | int i; |
| 3373 | #endif |
| 3374 | |
| 3375 | sysctl_ctx_init(&sc->sysctl_ctx); |
| 3376 | sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, |
| 3377 | SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, |
| 3378 | device_get_nameunit(sc->dev), |
| 3379 | CTLFLAG_RD, 0, ""); |
| 3380 | if (sc->sysctl_tree == NULL) { |
| 3381 | device_printf(sc->dev, "can't add sysctl node\n"); |
| 3382 | return; |
| 3383 | } |
| 3384 | |
| 3385 | SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3386 | OID_AUTO, "debug", CTLTYPE_INT|CTLFLAG_RW, sc, 0, |
| 3387 | emx_sysctl_debug_info, "I", "Debug Information"); |
| 3388 | |
| 3389 | SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3390 | OID_AUTO, "stats", CTLTYPE_INT|CTLFLAG_RW, sc, 0, |
| 3391 | emx_sysctl_stats, "I", "Statistics"); |
| 3392 | |
| 3393 | SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3394 | OID_AUTO, "rxd", CTLFLAG_RD, |
| 3395 | &sc->rx_data[0].num_rx_desc, 0, NULL); |
| 3396 | SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3397 | OID_AUTO, "txd", CTLFLAG_RD, &sc->num_tx_desc, 0, NULL); |
| 3398 | |
| 3399 | #ifdef notyet |
| 3400 | #ifdef PROFILE_SERIALIZER |
| 3401 | SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3402 | OID_AUTO, "serializer_sleep", CTLFLAG_RW, |
| 3403 | &ifp->if_serializer->sleep_cnt, 0, NULL); |
| 3404 | SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3405 | OID_AUTO, "serializer_tryfail", CTLFLAG_RW, |
| 3406 | &ifp->if_serializer->tryfail_cnt, 0, NULL); |
| 3407 | SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3408 | OID_AUTO, "serializer_enter", CTLFLAG_RW, |
| 3409 | &ifp->if_serializer->enter_cnt, 0, NULL); |
| 3410 | SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3411 | OID_AUTO, "serializer_try", CTLFLAG_RW, |
| 3412 | &ifp->if_serializer->try_cnt, 0, NULL); |
| 3413 | #endif |
| 3414 | #endif |
| 3415 | |
| 3416 | SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3417 | OID_AUTO, "int_throttle_ceil", CTLTYPE_INT|CTLFLAG_RW, |
| 3418 | sc, 0, emx_sysctl_int_throttle, "I", |
| 3419 | "interrupt throttling rate"); |
| 3420 | SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3421 | OID_AUTO, "int_tx_nsegs", CTLTYPE_INT|CTLFLAG_RW, |
| 3422 | sc, 0, emx_sysctl_int_tx_nsegs, "I", |
| 3423 | "# segments per TX interrupt"); |
| 3424 | |
| 3425 | SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3426 | OID_AUTO, "rx_ring_inuse", CTLFLAG_RD, |
| 3427 | &sc->rx_ring_inuse, 0, "RX ring in use"); |
| 3428 | |
| 3429 | #ifdef EMX_RSS_DEBUG |
| 3430 | SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 3431 | OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, |
| 3432 | 0, "RSS debug level"); |
| 3433 | for (i = 0; i < sc->rx_ring_cnt; ++i) { |
| 3434 | ksnprintf(rx_pkt, sizeof(rx_pkt), "rx%d_pkt", i); |
| 3435 | SYSCTL_ADD_UINT(&sc->sysctl_ctx, |
| 3436 | SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, |
| 3437 | rx_pkt, CTLFLAG_RW, |
| 3438 | &sc->rx_data[i].rx_pkts, 0, "RXed packets"); |
| 3439 | } |
| 3440 | #endif |
| 3441 | } |
| 3442 | |
| 3443 | static int |
| 3444 | emx_sysctl_int_throttle(SYSCTL_HANDLER_ARGS) |
| 3445 | { |
| 3446 | struct emx_softc *sc = (void *)arg1; |
| 3447 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 3448 | int error, throttle; |
| 3449 | |
| 3450 | throttle = sc->int_throttle_ceil; |
| 3451 | error = sysctl_handle_int(oidp, &throttle, 0, req); |
| 3452 | if (error || req->newptr == NULL) |
| 3453 | return error; |
| 3454 | if (throttle < 0 || throttle > 1000000000 / 256) |
| 3455 | return EINVAL; |
| 3456 | |
| 3457 | if (throttle) { |
| 3458 | /* |
| 3459 | * Set the interrupt throttling rate in 256ns increments, |
| 3460 | * recalculate sysctl value assignment to get exact frequency. |
| 3461 | */ |
| 3462 | throttle = 1000000000 / 256 / throttle; |
| 3463 | |
| 3464 | /* Upper 16bits of ITR is reserved and should be zero */ |
| 3465 | if (throttle & 0xffff0000) |
| 3466 | return EINVAL; |
| 3467 | } |
| 3468 | |
| 3469 | ifnet_serialize_all(ifp); |
| 3470 | |
| 3471 | if (throttle) |
| 3472 | sc->int_throttle_ceil = 1000000000 / 256 / throttle; |
| 3473 | else |
| 3474 | sc->int_throttle_ceil = 0; |
| 3475 | |
| 3476 | if (ifp->if_flags & IFF_RUNNING) |
| 3477 | E1000_WRITE_REG(&sc->hw, E1000_ITR, throttle); |
| 3478 | |
| 3479 | ifnet_deserialize_all(ifp); |
| 3480 | |
| 3481 | if (bootverbose) { |
| 3482 | if_printf(ifp, "Interrupt moderation set to %d/sec\n", |
| 3483 | sc->int_throttle_ceil); |
| 3484 | } |
| 3485 | return 0; |
| 3486 | } |
| 3487 | |
| 3488 | static int |
| 3489 | emx_sysctl_int_tx_nsegs(SYSCTL_HANDLER_ARGS) |
| 3490 | { |
| 3491 | struct emx_softc *sc = (void *)arg1; |
| 3492 | struct ifnet *ifp = &sc->arpcom.ac_if; |
| 3493 | int error, segs; |
| 3494 | |
| 3495 | segs = sc->tx_int_nsegs; |
| 3496 | error = sysctl_handle_int(oidp, &segs, 0, req); |
| 3497 | if (error || req->newptr == NULL) |
| 3498 | return error; |
| 3499 | if (segs <= 0) |
| 3500 | return EINVAL; |
| 3501 | |
| 3502 | ifnet_serialize_all(ifp); |
| 3503 | |
| 3504 | /* |
| 3505 | * Don't allow int_tx_nsegs to become: |
| 3506 | * o Less the oact_tx_desc |
| 3507 | * o Too large that no TX desc will cause TX interrupt to |
| 3508 | * be generated (OACTIVE will never recover) |
| 3509 | * o Too small that will cause tx_dd[] overflow |
| 3510 | */ |
| 3511 | if (segs < sc->oact_tx_desc || |
| 3512 | segs >= sc->num_tx_desc - sc->oact_tx_desc || |
| 3513 | segs < sc->num_tx_desc / EMX_TXDD_SAFE) { |
| 3514 | error = EINVAL; |
| 3515 | } else { |
| 3516 | error = 0; |
| 3517 | sc->tx_int_nsegs = segs; |
| 3518 | } |
| 3519 | |
| 3520 | ifnet_deserialize_all(ifp); |
| 3521 | |
| 3522 | return error; |
| 3523 | } |
| 3524 | |
| 3525 | static int |
| 3526 | emx_dma_alloc(struct emx_softc *sc) |
| 3527 | { |
| 3528 | int error, i; |
| 3529 | |
| 3530 | /* |
| 3531 | * Create top level busdma tag |
| 3532 | */ |
| 3533 | error = bus_dma_tag_create(NULL, 1, 0, |
| 3534 | BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, |
| 3535 | NULL, NULL, |
| 3536 | BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, |
| 3537 | 0, &sc->parent_dtag); |
| 3538 | if (error) { |
| 3539 | device_printf(sc->dev, "could not create top level DMA tag\n"); |
| 3540 | return error; |
| 3541 | } |
| 3542 | |
| 3543 | /* |
| 3544 | * Allocate transmit descriptors ring and buffers |
| 3545 | */ |
| 3546 | error = emx_create_tx_ring(sc); |
| 3547 | if (error) { |
| 3548 | device_printf(sc->dev, "Could not setup transmit structures\n"); |
| 3549 | return error; |
| 3550 | } |
| 3551 | |
| 3552 | /* |
| 3553 | * Allocate receive descriptors ring and buffers |
| 3554 | */ |
| 3555 | for (i = 0; i < sc->rx_ring_cnt; ++i) { |
| 3556 | error = emx_create_rx_ring(sc, &sc->rx_data[i]); |
| 3557 | if (error) { |
| 3558 | device_printf(sc->dev, |
| 3559 | "Could not setup receive structures\n"); |
| 3560 | return error; |
| 3561 | } |
| 3562 | } |
| 3563 | return 0; |
| 3564 | } |
| 3565 | |
| 3566 | static void |
| 3567 | emx_dma_free(struct emx_softc *sc) |
| 3568 | { |
| 3569 | int i; |
| 3570 | |
| 3571 | emx_destroy_tx_ring(sc, sc->num_tx_desc); |
| 3572 | |
| 3573 | for (i = 0; i < sc->rx_ring_cnt; ++i) { |
| 3574 | emx_destroy_rx_ring(sc, &sc->rx_data[i], |
| 3575 | sc->rx_data[i].num_rx_desc); |
| 3576 | } |
| 3577 | |
| 3578 | /* Free top level busdma tag */ |
| 3579 | if (sc->parent_dtag != NULL) |
| 3580 | bus_dma_tag_destroy(sc->parent_dtag); |
| 3581 | } |
| 3582 | |
| 3583 | static void |
| 3584 | emx_serialize(struct ifnet *ifp, enum ifnet_serialize slz) |
| 3585 | { |
| 3586 | struct emx_softc *sc = ifp->if_softc; |
| 3587 | |
| 3588 | switch (slz) { |
| 3589 | case IFNET_SERIALIZE_ALL: |
| 3590 | lwkt_serialize_array_enter(sc->serializes, EMX_NSERIALIZE, 0); |
| 3591 | break; |
| 3592 | |
| 3593 | case IFNET_SERIALIZE_MAIN: |
| 3594 | lwkt_serialize_enter(&sc->main_serialize); |
| 3595 | break; |
| 3596 | |
| 3597 | case IFNET_SERIALIZE_TX: |
| 3598 | lwkt_serialize_enter(&sc->tx_serialize); |
| 3599 | break; |
| 3600 | |
| 3601 | case IFNET_SERIALIZE_RX(0): |
| 3602 | lwkt_serialize_enter(&sc->rx_data[0].rx_serialize); |
| 3603 | break; |
| 3604 | |
| 3605 | case IFNET_SERIALIZE_RX(1): |
| 3606 | lwkt_serialize_enter(&sc->rx_data[1].rx_serialize); |
| 3607 | break; |
| 3608 | |
| 3609 | default: |
| 3610 | panic("%s unsupported serialize type\n", ifp->if_xname); |
| 3611 | } |
| 3612 | } |
| 3613 | |
| 3614 | static void |
| 3615 | emx_deserialize(struct ifnet *ifp, enum ifnet_serialize slz) |
| 3616 | { |
| 3617 | struct emx_softc *sc = ifp->if_softc; |
| 3618 | |
| 3619 | switch (slz) { |
| 3620 | case IFNET_SERIALIZE_ALL: |
| 3621 | lwkt_serialize_array_exit(sc->serializes, EMX_NSERIALIZE, 0); |
| 3622 | break; |
| 3623 | |
| 3624 | case IFNET_SERIALIZE_MAIN: |
| 3625 | lwkt_serialize_exit(&sc->main_serialize); |
| 3626 | break; |
| 3627 | |
| 3628 | case IFNET_SERIALIZE_TX: |
| 3629 | lwkt_serialize_exit(&sc->tx_serialize); |
| 3630 | break; |
| 3631 | |
| 3632 | case IFNET_SERIALIZE_RX(0): |
| 3633 | lwkt_serialize_exit(&sc->rx_data[0].rx_serialize); |
| 3634 | break; |
| 3635 | |
| 3636 | case IFNET_SERIALIZE_RX(1): |
| 3637 | lwkt_serialize_exit(&sc->rx_data[1].rx_serialize); |
| 3638 | break; |
| 3639 | |
| 3640 | default: |
| 3641 | panic("%s unsupported serialize type\n", ifp->if_xname); |
| 3642 | } |
| 3643 | } |
| 3644 | |
| 3645 | static int |
| 3646 | emx_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz) |
| 3647 | { |
| 3648 | struct emx_softc *sc = ifp->if_softc; |
| 3649 | |
| 3650 | switch (slz) { |
| 3651 | case IFNET_SERIALIZE_ALL: |
| 3652 | return lwkt_serialize_array_try(sc->serializes, |
| 3653 | EMX_NSERIALIZE, 0); |
| 3654 | |
| 3655 | case IFNET_SERIALIZE_MAIN: |
| 3656 | return lwkt_serialize_try(&sc->main_serialize); |
| 3657 | |
| 3658 | case IFNET_SERIALIZE_TX: |
| 3659 | return lwkt_serialize_try(&sc->tx_serialize); |
| 3660 | |
| 3661 | case IFNET_SERIALIZE_RX(0): |
| 3662 | return lwkt_serialize_try(&sc->rx_data[0].rx_serialize); |
| 3663 | |
| 3664 | case IFNET_SERIALIZE_RX(1): |
| 3665 | return lwkt_serialize_try(&sc->rx_data[1].rx_serialize); |
| 3666 | |
| 3667 | default: |
| 3668 | panic("%s unsupported serialize type\n", ifp->if_xname); |
| 3669 | } |
| 3670 | } |
| 3671 | |
| 3672 | static void |
| 3673 | emx_serialize_skipmain(struct emx_softc *sc) |
| 3674 | { |
| 3675 | lwkt_serialize_array_enter(sc->serializes, EMX_NSERIALIZE, 1); |
| 3676 | } |
| 3677 | |
| 3678 | #ifdef IFPOLL_ENABLE |
| 3679 | static int |
| 3680 | emx_tryserialize_skipmain(struct emx_softc *sc) |
| 3681 | { |
| 3682 | return lwkt_serialize_array_try(sc->serializes, EMX_NSERIALIZE, 1); |
| 3683 | } |
| 3684 | #endif |
| 3685 | |
| 3686 | static void |
| 3687 | emx_deserialize_skipmain(struct emx_softc *sc) |
| 3688 | { |
| 3689 | lwkt_serialize_array_exit(sc->serializes, EMX_NSERIALIZE, 1); |
| 3690 | } |
| 3691 | |
| 3692 | #ifdef INVARIANTS |
| 3693 | |
| 3694 | static void |
| 3695 | emx_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz, |
| 3696 | boolean_t serialized) |
| 3697 | { |
| 3698 | struct emx_softc *sc = ifp->if_softc; |
| 3699 | int i; |
| 3700 | |
| 3701 | switch (slz) { |
| 3702 | case IFNET_SERIALIZE_ALL: |
| 3703 | if (serialized) { |
| 3704 | for (i = 0; i < EMX_NSERIALIZE; ++i) |
| 3705 | ASSERT_SERIALIZED(sc->serializes[i]); |
| 3706 | } else { |
| 3707 | for (i = 0; i < EMX_NSERIALIZE; ++i) |
| 3708 | ASSERT_NOT_SERIALIZED(sc->serializes[i]); |
| 3709 | } |
| 3710 | break; |
| 3711 | |
| 3712 | case IFNET_SERIALIZE_MAIN: |
| 3713 | if (serialized) |
| 3714 | ASSERT_SERIALIZED(&sc->main_serialize); |
| 3715 | else |
| 3716 | ASSERT_NOT_SERIALIZED(&sc->main_serialize); |
| 3717 | break; |
| 3718 | |
| 3719 | case IFNET_SERIALIZE_TX: |
| 3720 | if (serialized) |
| 3721 | ASSERT_SERIALIZED(&sc->tx_serialize); |
| 3722 | else |
| 3723 | ASSERT_NOT_SERIALIZED(&sc->tx_serialize); |
| 3724 | break; |
| 3725 | |
| 3726 | case IFNET_SERIALIZE_RX(0): |
| 3727 | if (serialized) |
| 3728 | ASSERT_SERIALIZED(&sc->rx_data[0].rx_serialize); |
| 3729 | else |
| 3730 | ASSERT_NOT_SERIALIZED(&sc->rx_data[0].rx_serialize); |
| 3731 | break; |
| 3732 | |
| 3733 | case IFNET_SERIALIZE_RX(1): |
| 3734 | if (serialized) |
| 3735 | ASSERT_SERIALIZED(&sc->rx_data[1].rx_serialize); |
| 3736 | else |
| 3737 | ASSERT_NOT_SERIALIZED(&sc->rx_data[1].rx_serialize); |
| 3738 | break; |
| 3739 | |
| 3740 | default: |
| 3741 | panic("%s unsupported serialize type\n", ifp->if_xname); |
| 3742 | } |
| 3743 | } |
| 3744 | |
| 3745 | #endif /* INVARIANTS */ |
| 3746 | |
| 3747 | #ifdef IFPOLL_ENABLE |
| 3748 | |
| 3749 | static void |
| 3750 | emx_qpoll_status(struct ifnet *ifp, int pollhz __unused) |
| 3751 | { |
| 3752 | struct emx_softc *sc = ifp->if_softc; |
| 3753 | uint32_t reg_icr; |
| 3754 | |
| 3755 | ASSERT_SERIALIZED(&sc->main_serialize); |
| 3756 | |
| 3757 | reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR); |
| 3758 | if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
| 3759 | if (emx_tryserialize_skipmain(sc)) { |
| 3760 | callout_stop(&sc->timer); |
| 3761 | sc->hw.mac.get_link_status = 1; |
| 3762 | emx_update_link_status(sc); |
| 3763 | callout_reset(&sc->timer, hz, emx_timer, sc); |
| 3764 | emx_deserialize_skipmain(sc); |
| 3765 | } |
| 3766 | } |
| 3767 | } |
| 3768 | |
| 3769 | static void |
| 3770 | emx_qpoll_tx(struct ifnet *ifp, void *arg __unused, int cycle __unused) |
| 3771 | { |
| 3772 | struct emx_softc *sc = ifp->if_softc; |
| 3773 | |
| 3774 | ASSERT_SERIALIZED(&sc->tx_serialize); |
| 3775 | |
| 3776 | emx_txeof(sc); |
| 3777 | if (!ifq_is_empty(&ifp->if_snd)) |
| 3778 | if_devstart(ifp); |
| 3779 | } |
| 3780 | |
| 3781 | static void |
| 3782 | emx_qpoll_rx(struct ifnet *ifp, void *arg, int cycle) |
| 3783 | { |
| 3784 | struct emx_softc *sc = ifp->if_softc; |
| 3785 | struct emx_rxdata *rdata = arg; |
| 3786 | |
| 3787 | ASSERT_SERIALIZED(&rdata->rx_serialize); |
| 3788 | |
| 3789 | emx_rxeof(sc, rdata - sc->rx_data, cycle); |
| 3790 | } |
| 3791 | |
| 3792 | static void |
| 3793 | emx_qpoll(struct ifnet *ifp, struct ifpoll_info *info) |
| 3794 | { |
| 3795 | struct emx_softc *sc = ifp->if_softc; |
| 3796 | |
| 3797 | ASSERT_IFNET_SERIALIZED_ALL(ifp); |
| 3798 | |
| 3799 | if (info) { |
| 3800 | int i; |
| 3801 | |
| 3802 | info->ifpi_status.status_func = emx_qpoll_status; |
| 3803 | info->ifpi_status.serializer = &sc->main_serialize; |
| 3804 | |
| 3805 | info->ifpi_tx[0].poll_func = emx_qpoll_tx; |
| 3806 | info->ifpi_tx[0].arg = NULL; |
| 3807 | info->ifpi_tx[0].serializer = &sc->tx_serialize; |
| 3808 | |
| 3809 | for (i = 0; i < sc->rx_ring_cnt; ++i) { |
| 3810 | info->ifpi_rx[i].poll_func = emx_qpoll_rx; |
| 3811 | info->ifpi_rx[i].arg = &sc->rx_data[i]; |
| 3812 | info->ifpi_rx[i].serializer = |
| 3813 | &sc->rx_data[i].rx_serialize; |
| 3814 | } |
| 3815 | |
| 3816 | if (ifp->if_flags & IFF_RUNNING) |
| 3817 | emx_disable_intr(sc); |
| 3818 | } else if (ifp->if_flags & IFF_RUNNING) { |
| 3819 | emx_enable_intr(sc); |
| 3820 | } |
| 3821 | } |
| 3822 | |
| 3823 | #endif /* IFPOLL_ENABLE */ |