2 * Copyright (c) 2001-2011, Intel Corporation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the Intel Corporation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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29 * POSSIBILITY OF SUCH DAMAGE.
32 #include "opt_polling.h"
35 #include <sys/param.h>
37 #include <sys/endian.h>
38 #include <sys/interrupt.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
44 #include <sys/serialize.h>
45 #include <sys/serialize2.h>
46 #include <sys/socket.h>
47 #include <sys/sockio.h>
48 #include <sys/sysctl.h>
49 #include <sys/systm.h>
52 #include <net/ethernet.h>
54 #include <net/if_arp.h>
55 #include <net/if_dl.h>
56 #include <net/if_media.h>
57 #include <net/ifq_var.h>
58 #include <net/toeplitz.h>
59 #include <net/toeplitz2.h>
60 #include <net/vlan/if_vlan_var.h>
61 #include <net/vlan/if_vlan_ether.h>
62 #include <net/if_poll.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/in.h>
66 #include <netinet/ip.h>
67 #include <netinet/tcp.h>
68 #include <netinet/udp.h>
70 #include <bus/pci/pcivar.h>
71 #include <bus/pci/pcireg.h>
73 #include <dev/netif/ig_hal/e1000_api.h>
74 #include <dev/netif/ig_hal/e1000_82575.h>
75 #include <dev/netif/igb/if_igb.h>
78 #define IGB_RSS_DPRINTF(sc, lvl, fmt, ...) \
80 if (sc->rss_debug >= lvl) \
81 if_printf(&sc->arpcom.ac_if, fmt, __VA_ARGS__); \
83 #else /* !IGB_RSS_DEBUG */
84 #define IGB_RSS_DPRINTF(sc, lvl, fmt, ...) ((void)0)
85 #endif /* IGB_RSS_DEBUG */
87 #define IGB_NAME "Intel(R) PRO/1000 "
88 #define IGB_DEVICE(id) \
89 { IGB_VENDOR_ID, E1000_DEV_ID_##id, IGB_NAME #id }
90 #define IGB_DEVICE_NULL { 0, 0, NULL }
92 static struct igb_device {
97 IGB_DEVICE(82575EB_COPPER),
98 IGB_DEVICE(82575EB_FIBER_SERDES),
99 IGB_DEVICE(82575GB_QUAD_COPPER),
101 IGB_DEVICE(82576_NS),
102 IGB_DEVICE(82576_NS_SERDES),
103 IGB_DEVICE(82576_FIBER),
104 IGB_DEVICE(82576_SERDES),
105 IGB_DEVICE(82576_SERDES_QUAD),
106 IGB_DEVICE(82576_QUAD_COPPER),
107 IGB_DEVICE(82576_QUAD_COPPER_ET2),
108 IGB_DEVICE(82576_VF),
109 IGB_DEVICE(82580_COPPER),
110 IGB_DEVICE(82580_FIBER),
111 IGB_DEVICE(82580_SERDES),
112 IGB_DEVICE(82580_SGMII),
113 IGB_DEVICE(82580_COPPER_DUAL),
114 IGB_DEVICE(82580_QUAD_FIBER),
115 IGB_DEVICE(DH89XXCC_SERDES),
116 IGB_DEVICE(DH89XXCC_SGMII),
117 IGB_DEVICE(DH89XXCC_SFP),
118 IGB_DEVICE(DH89XXCC_BACKPLANE),
119 IGB_DEVICE(I350_COPPER),
120 IGB_DEVICE(I350_FIBER),
121 IGB_DEVICE(I350_SERDES),
122 IGB_DEVICE(I350_SGMII),
125 /* required last entry */
129 static int igb_probe(device_t);
130 static int igb_attach(device_t);
131 static int igb_detach(device_t);
132 static int igb_shutdown(device_t);
133 static int igb_suspend(device_t);
134 static int igb_resume(device_t);
136 static boolean_t igb_is_valid_ether_addr(const uint8_t *);
137 static void igb_setup_ifp(struct igb_softc *);
138 static int igb_txctx_pullup(struct igb_tx_ring *, struct mbuf **);
139 static boolean_t igb_txctx(struct igb_tx_ring *, struct mbuf *);
140 static void igb_add_sysctl(struct igb_softc *);
141 static int igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS);
142 static int igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS);
144 static void igb_vf_init_stats(struct igb_softc *);
145 static void igb_reset(struct igb_softc *);
146 static void igb_update_stats_counters(struct igb_softc *);
147 static void igb_update_vf_stats_counters(struct igb_softc *);
148 static void igb_update_link_status(struct igb_softc *);
149 static void igb_init_tx_unit(struct igb_softc *);
150 static void igb_init_rx_unit(struct igb_softc *);
152 static void igb_set_vlan(struct igb_softc *);
153 static void igb_set_multi(struct igb_softc *);
154 static void igb_set_promisc(struct igb_softc *);
155 static void igb_disable_promisc(struct igb_softc *);
157 static int igb_alloc_rings(struct igb_softc *);
158 static void igb_free_rings(struct igb_softc *);
159 static int igb_create_tx_ring(struct igb_tx_ring *);
160 static int igb_create_rx_ring(struct igb_rx_ring *);
161 static void igb_free_tx_ring(struct igb_tx_ring *);
162 static void igb_free_rx_ring(struct igb_rx_ring *);
163 static void igb_destroy_tx_ring(struct igb_tx_ring *, int);
164 static void igb_destroy_rx_ring(struct igb_rx_ring *, int);
165 static void igb_init_tx_ring(struct igb_tx_ring *);
166 static int igb_init_rx_ring(struct igb_rx_ring *);
167 static int igb_newbuf(struct igb_rx_ring *, int, boolean_t);
168 static int igb_encap(struct igb_tx_ring *, struct mbuf **);
170 static void igb_stop(struct igb_softc *);
171 static void igb_init(void *);
172 static int igb_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
173 static void igb_media_status(struct ifnet *, struct ifmediareq *);
174 static int igb_media_change(struct ifnet *);
175 static void igb_timer(void *);
176 static void igb_watchdog(struct ifnet *);
177 static void igb_start(struct ifnet *);
178 #ifdef DEVICE_POLLING
179 static void igb_poll(struct ifnet *, enum poll_cmd, int);
181 static void igb_serialize(struct ifnet *, enum ifnet_serialize);
182 static void igb_deserialize(struct ifnet *, enum ifnet_serialize);
183 static int igb_tryserialize(struct ifnet *, enum ifnet_serialize);
185 static void igb_serialize_assert(struct ifnet *, enum ifnet_serialize,
189 static void igb_intr(void *);
190 static void igb_shared_intr(void *);
191 static void igb_rxeof(struct igb_rx_ring *, int);
192 static void igb_txeof(struct igb_tx_ring *);
193 static void igb_set_eitr(struct igb_softc *);
194 static void igb_enable_intr(struct igb_softc *);
195 static void igb_disable_intr(struct igb_softc *);
196 static void igb_init_unshared_intr(struct igb_softc *);
197 static void igb_init_intr(struct igb_softc *);
198 static int igb_setup_intr(struct igb_softc *);
199 static void igb_setup_tx_intr(struct igb_tx_ring *, int *, int);
200 static void igb_setup_rx_intr(struct igb_rx_ring *, int *, int);
201 static void igb_set_intr_mask(struct igb_softc *);
203 /* Management and WOL Support */
204 static void igb_get_mgmt(struct igb_softc *);
205 static void igb_rel_mgmt(struct igb_softc *);
206 static void igb_get_hw_control(struct igb_softc *);
207 static void igb_rel_hw_control(struct igb_softc *);
208 static void igb_enable_wol(device_t);
210 static device_method_t igb_methods[] = {
211 /* Device interface */
212 DEVMETHOD(device_probe, igb_probe),
213 DEVMETHOD(device_attach, igb_attach),
214 DEVMETHOD(device_detach, igb_detach),
215 DEVMETHOD(device_shutdown, igb_shutdown),
216 DEVMETHOD(device_suspend, igb_suspend),
217 DEVMETHOD(device_resume, igb_resume),
221 static driver_t igb_driver = {
224 sizeof(struct igb_softc),
227 static devclass_t igb_devclass;
229 DECLARE_DUMMY_MODULE(if_igb);
230 MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
231 DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
233 static int igb_rxd = IGB_DEFAULT_RXD;
234 static int igb_txd = IGB_DEFAULT_TXD;
235 static int igb_rxr = 0;
236 static int igb_msi_enable = 1;
237 static int igb_msix_enable = 1;
238 static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
239 static int igb_fc_setting = e1000_fc_full;
242 * DMA Coalescing, only for i350 - default to off,
243 * this feature is for power savings
245 static int igb_dma_coalesce = 0;
247 TUNABLE_INT("hw.igb.rxd", &igb_rxd);
248 TUNABLE_INT("hw.igb.txd", &igb_txd);
249 TUNABLE_INT("hw.igb.rxr", &igb_rxr);
250 TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
251 TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
252 TUNABLE_INT("hw.igb.fc_setting", &igb_fc_setting);
255 TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
256 TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
259 igb_rxcsum(uint32_t staterr, struct mbuf *mp)
261 /* Ignore Checksum bit is set */
262 if (staterr & E1000_RXD_STAT_IXSM)
265 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
267 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
269 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
270 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
271 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
272 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
273 mp->m_pkthdr.csum_data = htons(0xffff);
278 static __inline struct pktinfo *
279 igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
280 uint32_t hash, uint32_t hashtype, uint32_t staterr)
283 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
284 pi->pi_netisr = NETISR_IP;
286 pi->pi_l3proto = IPPROTO_TCP;
289 case E1000_RXDADV_RSSTYPE_IPV4:
290 if (staterr & E1000_RXD_STAT_IXSM)
294 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
295 E1000_RXD_STAT_TCPCS) {
296 pi->pi_netisr = NETISR_IP;
298 pi->pi_l3proto = IPPROTO_UDP;
306 m->m_flags |= M_HASH;
307 m->m_pkthdr.hash = toeplitz_hash(hash);
312 igb_probe(device_t dev)
314 const struct igb_device *d;
317 vid = pci_get_vendor(dev);
318 did = pci_get_device(dev);
320 for (d = igb_devices; d->desc != NULL; ++d) {
321 if (vid == d->vid && did == d->did) {
322 device_set_desc(dev, d->desc);
330 igb_attach(device_t dev)
332 struct igb_softc *sc = device_get_softc(dev);
333 uint16_t eeprom_data;
335 int error = 0, i, j, ring_max;
339 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
340 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
341 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
342 igb_sysctl_nvm_info, "I", "NVM Information");
344 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
345 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
346 OID_AUTO, "enable_aim", CTLTYPE_INT|CTLFLAG_RW,
347 &igb_enable_aim, 1, "Interrupt Moderation");
349 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
350 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
351 OID_AUTO, "flow_control", CTLTYPE_INT|CTLFLAG_RW,
352 adapter, 0, igb_set_flowcntl, "I", "Flow Control");
355 callout_init_mp(&sc->timer);
357 sc->dev = sc->osdep.dev = dev;
360 * Determine hardware and mac type
362 sc->hw.vendor_id = pci_get_vendor(dev);
363 sc->hw.device_id = pci_get_device(dev);
364 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
365 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
366 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
368 if (e1000_set_mac_type(&sc->hw))
371 /* Are we a VF device? */
372 if (sc->hw.mac.type == e1000_vfadapt ||
373 sc->hw.mac.type == e1000_vfadapt_i350)
378 /* Enable bus mastering */
379 pci_enable_busmaster(dev);
384 sc->mem_rid = PCIR_BAR(0);
385 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
387 if (sc->mem_res == NULL) {
388 device_printf(dev, "Unable to allocate bus resource: memory\n");
392 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
393 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
395 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
400 sc->intr_type = pci_alloc_1intr(dev, igb_msi_enable,
401 &sc->intr_rid, &intr_flags);
403 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->intr_rid,
405 if (sc->intr_res == NULL) {
406 device_printf(dev, "Unable to allocate bus resource: "
412 /* Save PCI command register for Shared Code */
413 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
414 sc->hw.back = &sc->osdep;
416 switch (sc->hw.mac.type) {
418 ring_max = IGB_MAX_RING_82575;
421 ring_max = IGB_MAX_RING_82580;
424 ring_max = IGB_MAX_RING_I350;
427 ring_max = IGB_MAX_RING_82576;
430 ring_max = IGB_MIN_RING;
433 sc->rx_ring_cnt = device_getenv_int(dev, "rxr", igb_rxr);
434 sc->rx_ring_cnt = if_ring_count2(sc->rx_ring_cnt, ring_max);
436 sc->rx_ring_cnt = device_getenv_int(dev, "rxr_debug", sc->rx_ring_cnt);
438 sc->rx_ring_inuse = sc->rx_ring_cnt;
439 sc->tx_ring_cnt = 1; /* XXX */
441 sc->intr_rate = IGB_INTR_RATE;
443 /* Do Shared Code initialization */
444 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
445 device_printf(dev, "Setup of Shared code failed\n");
450 e1000_get_bus_info(&sc->hw);
452 sc->hw.mac.autoneg = DO_AUTO_NEG;
453 sc->hw.phy.autoneg_wait_to_complete = FALSE;
454 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
457 if (sc->hw.phy.media_type == e1000_media_type_copper) {
458 sc->hw.phy.mdix = AUTO_ALL_MODES;
459 sc->hw.phy.disable_polarity_correction = FALSE;
460 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
463 /* Set the frame limits assuming standard ethernet sized frames. */
464 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
466 /* Allocate RX/TX rings */
467 error = igb_alloc_rings(sc);
474 lwkt_serialize_init(&sc->main_serialize);
476 sc->serializes[i++] = &sc->main_serialize;
478 sc->tx_serialize = i;
479 for (j = 0; j < sc->tx_ring_cnt; ++j)
480 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
482 sc->rx_serialize = i;
483 for (j = 0; j < sc->rx_ring_cnt; ++j)
484 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
486 sc->serialize_cnt = i;
487 KKASSERT(sc->serialize_cnt <= IGB_NSERIALIZE);
489 /* Allocate the appropriate stats memory */
491 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
493 igb_vf_init_stats(sc);
495 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
499 /* Allocate multicast array memory. */
500 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
503 /* Some adapter-specific advanced features */
504 if (sc->hw.mac.type >= e1000_i350) {
506 igb_set_sysctl_value(adapter, "dma_coalesce",
507 "configure dma coalesce",
508 &adapter->dma_coalesce, igb_dma_coalesce);
509 igb_set_sysctl_value(adapter, "eee_disabled",
510 "enable Energy Efficient Ethernet",
511 &adapter->hw.dev_spec._82575.eee_disable,
514 sc->dma_coalesce = igb_dma_coalesce;
515 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
517 e1000_set_eee_i350(&sc->hw);
521 * Start from a known state, this is important in reading the nvm and
524 e1000_reset_hw(&sc->hw);
526 /* Make sure we have a good EEPROM before we read from it */
527 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
529 * Some PCI-E parts fail the first check due to
530 * the link being in sleep state, call it again,
531 * if it fails a second time its a real issue.
533 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
535 "The EEPROM Checksum Is Not Valid\n");
541 /* Copy the permanent MAC address out of the EEPROM */
542 if (e1000_read_mac_addr(&sc->hw) < 0) {
543 device_printf(dev, "EEPROM read error while reading MAC"
548 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
549 device_printf(dev, "Invalid MAC address\n");
556 ** Configure Interrupts
558 if ((adapter->msix > 1) && (igb_enable_msix))
559 error = igb_allocate_msix(adapter);
560 else /* MSI or Legacy */
561 error = igb_allocate_legacy(adapter);
566 /* Setup OS specific network interface */
569 /* Add sysctl tree, must after igb_setup_ifp() */
572 /* Now get a good starting state */
575 /* Initialize statistics */
576 igb_update_stats_counters(sc);
578 sc->hw.mac.get_link_status = 1;
579 igb_update_link_status(sc);
581 /* Indicate SOL/IDER usage */
582 if (e1000_check_reset_block(&sc->hw)) {
584 "PHY reset is blocked due to SOL/IDER session.\n");
587 /* Determine if we have to control management hardware */
588 if (e1000_enable_mng_pass_thru(&sc->hw))
589 sc->flags |= IGB_FLAG_HAS_MGMT;
594 /* APME bit in EEPROM is mapped to WUC.APME */
595 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
597 sc->wol = E1000_WUFC_MAG;
598 /* XXX disable WOL */
602 /* Register for VLAN events */
603 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
604 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
605 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
606 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
610 igb_add_hw_stats(adapter);
613 error = igb_setup_intr(sc);
615 ether_ifdetach(&sc->arpcom.ac_if);
626 igb_detach(device_t dev)
628 struct igb_softc *sc = device_get_softc(dev);
630 if (device_is_attached(dev)) {
631 struct ifnet *ifp = &sc->arpcom.ac_if;
633 ifnet_serialize_all(ifp);
637 e1000_phy_hw_reset(&sc->hw);
639 /* Give control back to firmware */
641 igb_rel_hw_control(sc);
644 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
645 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
649 bus_teardown_intr(dev, sc->intr_res, sc->intr_tag);
651 ifnet_deserialize_all(ifp);
654 } else if (sc->mem_res != NULL) {
655 igb_rel_hw_control(sc);
657 bus_generic_detach(dev);
659 if (sc->intr_res != NULL) {
660 bus_release_resource(dev, SYS_RES_IRQ, sc->intr_rid,
663 if (sc->intr_type == PCI_INTR_TYPE_MSI)
664 pci_release_msi(dev);
666 if (sc->mem_res != NULL) {
667 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
674 kfree(sc->mta, M_DEVBUF);
675 if (sc->stats != NULL)
676 kfree(sc->stats, M_DEVBUF);
678 if (sc->sysctl_tree != NULL)
679 sysctl_ctx_free(&sc->sysctl_ctx);
685 igb_shutdown(device_t dev)
687 return igb_suspend(dev);
691 igb_suspend(device_t dev)
693 struct igb_softc *sc = device_get_softc(dev);
694 struct ifnet *ifp = &sc->arpcom.ac_if;
696 ifnet_serialize_all(ifp);
701 igb_rel_hw_control(sc);
704 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
705 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
709 ifnet_deserialize_all(ifp);
711 return bus_generic_suspend(dev);
715 igb_resume(device_t dev)
717 struct igb_softc *sc = device_get_softc(dev);
718 struct ifnet *ifp = &sc->arpcom.ac_if;
720 ifnet_serialize_all(ifp);
727 ifnet_deserialize_all(ifp);
729 return bus_generic_resume(dev);
733 igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
735 struct igb_softc *sc = ifp->if_softc;
736 struct ifreq *ifr = (struct ifreq *)data;
737 int max_frame_size, mask, reinit;
740 ASSERT_IFNET_SERIALIZED_ALL(ifp);
744 max_frame_size = 9234;
745 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
751 ifp->if_mtu = ifr->ifr_mtu;
752 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
755 if (ifp->if_flags & IFF_RUNNING)
760 if (ifp->if_flags & IFF_UP) {
761 if (ifp->if_flags & IFF_RUNNING) {
762 if ((ifp->if_flags ^ sc->if_flags) &
763 (IFF_PROMISC | IFF_ALLMULTI)) {
764 igb_disable_promisc(sc);
770 } else if (ifp->if_flags & IFF_RUNNING) {
773 sc->if_flags = ifp->if_flags;
778 if (ifp->if_flags & IFF_RUNNING) {
779 igb_disable_intr(sc);
781 #ifdef DEVICE_POLLING
782 if (!(ifp->if_flags & IFF_POLLING))
790 * As the speed/duplex settings are being
791 * changed, we need toreset the PHY.
793 sc->hw.phy.reset_disable = FALSE;
795 /* Check SOL/IDER usage */
796 if (e1000_check_reset_block(&sc->hw)) {
797 if_printf(ifp, "Media change is "
798 "blocked due to SOL/IDER session.\n");
804 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
809 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
810 if (mask & IFCAP_HWCSUM) {
811 ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
814 if (mask & IFCAP_VLAN_HWTAGGING) {
815 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
818 if (mask & IFCAP_RSS)
819 ifp->if_capenable ^= IFCAP_RSS;
820 if (reinit && (ifp->if_flags & IFF_RUNNING))
825 error = ether_ioctl(ifp, command, data);
834 struct igb_softc *sc = xsc;
835 struct ifnet *ifp = &sc->arpcom.ac_if;
838 ASSERT_IFNET_SERIALIZED_ALL(ifp);
842 /* Get the latest mac address, User can use a LAA */
843 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
845 /* Put the address into the Receive Address Array */
846 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
849 igb_update_link_status(sc);
851 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
853 /* Set hardware offload abilities */
854 if (ifp->if_capenable & IFCAP_TXCSUM)
855 ifp->if_hwassist = IGB_CSUM_FEATURES;
857 ifp->if_hwassist = 0;
859 /* Configure for OS presence */
862 if (IGB_ENABLE_HWRSS(sc)) {
863 if (sc->intr_type != PCI_INTR_TYPE_MSIX
864 #ifdef DEVICE_POLLING
865 || (ifp->if_flags & IFF_POLLING)
868 sc->rx_ring_inuse = IGB_MIN_RING_RSS;
870 if_printf(ifp, "RX rings %d/%d\n",
871 sc->rx_ring_inuse, sc->rx_ring_cnt);
876 /* Prepare transmit descriptors and buffers */
877 for (i = 0; i < sc->tx_ring_cnt; ++i)
878 igb_init_tx_ring(&sc->tx_rings[i]);
879 igb_init_tx_unit(sc);
881 /* Setup Multicast table */
886 * Figure out the desired mbuf pool
887 * for doing jumbo/packetsplit
889 if (adapter->max_frame_size <= 2048)
890 adapter->rx_mbuf_sz = MCLBYTES;
891 else if (adapter->max_frame_size <= 4096)
892 adapter->rx_mbuf_sz = MJUMPAGESIZE;
894 adapter->rx_mbuf_sz = MJUM9BYTES;
897 /* Initialize interrupt */
900 /* Prepare receive descriptors and buffers */
901 for (i = 0; i < sc->rx_ring_inuse; ++i) {
904 error = igb_init_rx_ring(&sc->rx_rings[i]);
906 if_printf(ifp, "Could not setup receive structures\n");
911 igb_init_rx_unit(sc);
913 /* Enable VLAN support */
914 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
917 /* Don't lose promiscuous settings */
920 ifp->if_flags |= IFF_RUNNING;
921 ifp->if_flags &= ~IFF_OACTIVE;
923 callout_reset(&sc->timer, hz, igb_timer, sc);
924 e1000_clear_hw_cntrs_base_generic(&sc->hw);
927 if (adapter->msix > 1) /* Set up queue routing */
928 igb_configure_queues(adapter);
931 /* this clears any pending interrupts */
932 E1000_READ_REG(&sc->hw, E1000_ICR);
933 #ifdef DEVICE_POLLING
935 * Only enable interrupts if we are not polling, make sure
936 * they are off otherwise.
938 if (ifp->if_flags & IFF_POLLING)
939 igb_disable_intr(sc);
941 #endif /* DEVICE_POLLING */
944 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
947 /* Set Energy Efficient Ethernet */
948 e1000_set_eee_i350(&sc->hw);
950 /* Don't reset the phy next time init gets called */
951 sc->hw.phy.reset_disable = TRUE;
955 igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
957 struct igb_softc *sc = ifp->if_softc;
958 u_char fiber_type = IFM_1000_SX;
960 ASSERT_IFNET_SERIALIZED_ALL(ifp);
962 igb_update_link_status(sc);
964 ifmr->ifm_status = IFM_AVALID;
965 ifmr->ifm_active = IFM_ETHER;
967 if (!sc->link_active)
970 ifmr->ifm_status |= IFM_ACTIVE;
972 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
973 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
974 ifmr->ifm_active |= fiber_type | IFM_FDX;
976 switch (sc->link_speed) {
978 ifmr->ifm_active |= IFM_10_T;
982 ifmr->ifm_active |= IFM_100_TX;
986 ifmr->ifm_active |= IFM_1000_T;
989 if (sc->link_duplex == FULL_DUPLEX)
990 ifmr->ifm_active |= IFM_FDX;
992 ifmr->ifm_active |= IFM_HDX;
997 igb_media_change(struct ifnet *ifp)
999 struct igb_softc *sc = ifp->if_softc;
1000 struct ifmedia *ifm = &sc->media;
1002 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1004 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1007 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1009 sc->hw.mac.autoneg = DO_AUTO_NEG;
1010 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1016 sc->hw.mac.autoneg = DO_AUTO_NEG;
1017 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1021 sc->hw.mac.autoneg = FALSE;
1022 sc->hw.phy.autoneg_advertised = 0;
1023 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1024 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1026 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1030 sc->hw.mac.autoneg = FALSE;
1031 sc->hw.phy.autoneg_advertised = 0;
1032 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1033 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1035 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1039 if_printf(ifp, "Unsupported media type\n");
1049 igb_set_promisc(struct igb_softc *sc)
1051 struct ifnet *ifp = &sc->arpcom.ac_if;
1052 struct e1000_hw *hw = &sc->hw;
1056 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1060 reg = E1000_READ_REG(hw, E1000_RCTL);
1061 if (ifp->if_flags & IFF_PROMISC) {
1062 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1063 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1064 } else if (ifp->if_flags & IFF_ALLMULTI) {
1065 reg |= E1000_RCTL_MPE;
1066 reg &= ~E1000_RCTL_UPE;
1067 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1072 igb_disable_promisc(struct igb_softc *sc)
1074 struct e1000_hw *hw = &sc->hw;
1078 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1081 reg = E1000_READ_REG(hw, E1000_RCTL);
1082 reg &= ~E1000_RCTL_UPE;
1083 reg &= ~E1000_RCTL_MPE;
1084 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1088 igb_set_multi(struct igb_softc *sc)
1090 struct ifnet *ifp = &sc->arpcom.ac_if;
1091 struct ifmultiaddr *ifma;
1092 uint32_t reg_rctl = 0;
1097 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1099 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1100 if (ifma->ifma_addr->sa_family != AF_LINK)
1103 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1106 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1107 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1111 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1112 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1113 reg_rctl |= E1000_RCTL_MPE;
1114 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1116 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1121 igb_timer(void *xsc)
1123 struct igb_softc *sc = xsc;
1125 lwkt_serialize_enter(&sc->main_serialize);
1127 igb_update_link_status(sc);
1128 igb_update_stats_counters(sc);
1130 callout_reset(&sc->timer, hz, igb_timer, sc);
1132 lwkt_serialize_exit(&sc->main_serialize);
1136 igb_update_link_status(struct igb_softc *sc)
1138 struct ifnet *ifp = &sc->arpcom.ac_if;
1139 struct e1000_hw *hw = &sc->hw;
1140 uint32_t link_check, thstat, ctrl;
1142 link_check = thstat = ctrl = 0;
1144 /* Get the cached link value or read for real */
1145 switch (hw->phy.media_type) {
1146 case e1000_media_type_copper:
1147 if (hw->mac.get_link_status) {
1148 /* Do the work to read phy */
1149 e1000_check_for_link(hw);
1150 link_check = !hw->mac.get_link_status;
1156 case e1000_media_type_fiber:
1157 e1000_check_for_link(hw);
1158 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1161 case e1000_media_type_internal_serdes:
1162 e1000_check_for_link(hw);
1163 link_check = hw->mac.serdes_has_link;
1166 /* VF device is type_unknown */
1167 case e1000_media_type_unknown:
1168 e1000_check_for_link(hw);
1169 link_check = !hw->mac.get_link_status;
1175 /* Check for thermal downshift or shutdown */
1176 if (hw->mac.type == e1000_i350) {
1177 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1178 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1181 /* Now we check if a transition has happened */
1182 if (link_check && sc->link_active == 0) {
1183 e1000_get_speed_and_duplex(hw,
1184 &sc->link_speed, &sc->link_duplex);
1186 if_printf(ifp, "Link is up %d Mbps %s\n",
1188 sc->link_duplex == FULL_DUPLEX ?
1189 "Full Duplex" : "Half Duplex");
1191 sc->link_active = 1;
1193 ifp->if_baudrate = sc->link_speed * 1000000;
1194 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1195 (thstat & E1000_THSTAT_LINK_THROTTLE))
1196 if_printf(ifp, "Link: thermal downshift\n");
1197 /* This can sleep */
1198 ifp->if_link_state = LINK_STATE_UP;
1199 if_link_state_change(ifp);
1200 } else if (!link_check && sc->link_active == 1) {
1201 ifp->if_baudrate = sc->link_speed = 0;
1202 sc->link_duplex = 0;
1204 if_printf(ifp, "Link is Down\n");
1205 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1206 (thstat & E1000_THSTAT_PWR_DOWN))
1207 if_printf(ifp, "Link: thermal shutdown\n");
1208 sc->link_active = 0;
1209 /* This can sleep */
1210 ifp->if_link_state = LINK_STATE_DOWN;
1211 if_link_state_change(ifp);
1216 igb_stop(struct igb_softc *sc)
1218 struct ifnet *ifp = &sc->arpcom.ac_if;
1221 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1223 igb_disable_intr(sc);
1225 callout_stop(&sc->timer);
1227 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1230 e1000_reset_hw(&sc->hw);
1231 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1233 e1000_led_off(&sc->hw);
1234 e1000_cleanup_led(&sc->hw);
1236 for (i = 0; i < sc->tx_ring_cnt; ++i)
1237 igb_free_tx_ring(&sc->tx_rings[i]);
1238 for (i = 0; i < sc->rx_ring_cnt; ++i)
1239 igb_free_rx_ring(&sc->rx_rings[i]);
1243 igb_reset(struct igb_softc *sc)
1245 struct ifnet *ifp = &sc->arpcom.ac_if;
1246 struct e1000_hw *hw = &sc->hw;
1247 struct e1000_fc_info *fc = &hw->fc;
1251 /* Let the firmware know the OS is in control */
1252 igb_get_hw_control(sc);
1255 * Packet Buffer Allocation (PBA)
1256 * Writing PBA sets the receive portion of the buffer
1257 * the remainder is used for the transmit buffer.
1259 switch (hw->mac.type) {
1261 pba = E1000_PBA_32K;
1266 pba = E1000_READ_REG(hw, E1000_RXPBS);
1267 pba &= E1000_RXPBS_SIZE_MASK_82576;
1272 case e1000_vfadapt_i350:
1273 pba = E1000_READ_REG(hw, E1000_RXPBS);
1274 pba = e1000_rxpbs_adjust_82580(pba);
1276 /* XXX pba = E1000_PBA_35K; */
1282 /* Special needs in case of Jumbo frames */
1283 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1284 uint32_t tx_space, min_tx, min_rx;
1286 pba = E1000_READ_REG(hw, E1000_PBA);
1287 tx_space = pba >> 16;
1290 min_tx = (sc->max_frame_size +
1291 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1292 min_tx = roundup2(min_tx, 1024);
1294 min_rx = sc->max_frame_size;
1295 min_rx = roundup2(min_rx, 1024);
1297 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1298 pba = pba - (min_tx - tx_space);
1300 * if short on rx space, rx wins
1301 * and must trump tx adjustment
1306 E1000_WRITE_REG(hw, E1000_PBA, pba);
1310 * These parameters control the automatic generation (Tx) and
1311 * response (Rx) to Ethernet PAUSE frames.
1312 * - High water mark should allow for at least two frames to be
1313 * received after sending an XOFF.
1314 * - Low water mark works best when it is very near the high water mark.
1315 * This allows the receiver to restart by sending XON when it has
1318 hwm = min(((pba << 10) * 9 / 10),
1319 ((pba << 10) - 2 * sc->max_frame_size));
1321 if (hw->mac.type < e1000_82576) {
1322 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1323 fc->low_water = fc->high_water - 8;
1325 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1326 fc->low_water = fc->high_water - 16;
1328 fc->pause_time = IGB_FC_PAUSE_TIME;
1329 fc->send_xon = TRUE;
1331 /* Issue a global reset */
1333 E1000_WRITE_REG(hw, E1000_WUC, 0);
1335 if (e1000_init_hw(hw) < 0)
1336 if_printf(ifp, "Hardware Initialization Failed\n");
1338 /* Setup DMA Coalescing */
1339 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1342 hwm = (pba - 4) << 10;
1343 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1344 & E1000_DMACR_DMACTHR_MASK;
1346 /* transition to L0x or L1 if available..*/
1347 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1349 /* timer = +-1000 usec in 32usec intervals */
1351 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1353 /* No lower threshold */
1354 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1356 /* set hwm to PBA - 2 * max frame size */
1357 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1359 /* Set the interval before transition */
1360 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1361 reg |= 0x800000FF; /* 255 usec */
1362 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1364 /* free space in tx packet buffer to wake from DMA coal */
1365 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1366 (20480 - (2 * sc->max_frame_size)) >> 6);
1368 /* make low power state decision controlled by DMA coal */
1369 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1370 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1371 reg | E1000_PCIEMISC_LX_DECISION);
1372 if_printf(ifp, "DMA Coalescing enabled\n");
1375 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1376 e1000_get_phy_info(hw);
1377 e1000_check_for_link(hw);
1381 igb_setup_ifp(struct igb_softc *sc)
1383 struct ifnet *ifp = &sc->arpcom.ac_if;
1385 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
1387 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1388 ifp->if_init = igb_init;
1389 ifp->if_ioctl = igb_ioctl;
1390 ifp->if_start = igb_start;
1391 ifp->if_serialize = igb_serialize;
1392 ifp->if_deserialize = igb_deserialize;
1393 ifp->if_tryserialize = igb_tryserialize;
1395 ifp->if_serialize_assert = igb_serialize_assert;
1397 #ifdef DEVICE_POLLING
1398 ifp->if_poll = igb_poll;
1400 ifp->if_watchdog = igb_watchdog;
1402 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1403 ifq_set_ready(&ifp->if_snd);
1405 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1407 ifp->if_capabilities =
1408 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1409 if (IGB_ENABLE_HWRSS(sc))
1410 ifp->if_capabilities |= IFCAP_RSS;
1411 ifp->if_capenable = ifp->if_capabilities;
1412 ifp->if_hwassist = IGB_CSUM_FEATURES;
1415 * Tell the upper layer(s) we support long frames
1417 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1420 * Specify the media types supported by this adapter and register
1421 * callbacks to update media and link information
1423 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1424 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1425 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1426 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1428 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1430 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1431 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1433 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1434 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1436 if (sc->hw.phy.type != e1000_phy_ife) {
1437 ifmedia_add(&sc->media,
1438 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1439 ifmedia_add(&sc->media,
1440 IFM_ETHER | IFM_1000_T, 0, NULL);
1443 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1444 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1448 igb_add_sysctl(struct igb_softc *sc)
1450 #ifdef IGB_RSS_DEBUG
1455 sysctl_ctx_init(&sc->sysctl_ctx);
1456 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1457 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1458 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1459 if (sc->sysctl_tree == NULL) {
1460 device_printf(sc->dev, "can't add sysctl node\n");
1464 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1465 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1466 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1467 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1468 "# of RX rings used");
1469 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1470 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1472 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1473 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1476 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1477 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1478 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1480 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1481 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1482 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
1483 "# of segments per TX interrupt");
1485 #ifdef IGB_RSS_DEBUG
1486 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1487 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1489 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1490 ksnprintf(rx_pkt, sizeof(rx_pkt), "rx%d_pkt", i);
1491 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1492 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, rx_pkt,
1493 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1499 igb_alloc_rings(struct igb_softc *sc)
1504 * Create top level busdma tag
1506 error = bus_dma_tag_create(NULL, 1, 0,
1507 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1508 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1511 device_printf(sc->dev, "could not create top level DMA tag\n");
1516 * Allocate TX descriptor rings and buffers
1518 sc->tx_rings = kmalloc(sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1519 M_DEVBUF, M_WAITOK | M_ZERO);
1520 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1521 struct igb_tx_ring *txr = &sc->tx_rings[i];
1523 /* Set up some basics */
1526 lwkt_serialize_init(&txr->tx_serialize);
1528 error = igb_create_tx_ring(txr);
1534 * Allocate RX descriptor rings and buffers
1536 sc->rx_rings = kmalloc(sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1537 M_DEVBUF, M_WAITOK | M_ZERO);
1538 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1539 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1541 /* Set up some basics */
1544 lwkt_serialize_init(&rxr->rx_serialize);
1546 error = igb_create_rx_ring(rxr);
1555 igb_free_rings(struct igb_softc *sc)
1559 if (sc->tx_rings != NULL) {
1560 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1561 struct igb_tx_ring *txr = &sc->tx_rings[i];
1563 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1565 kfree(sc->tx_rings, M_DEVBUF);
1568 if (sc->rx_rings != NULL) {
1569 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1570 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1572 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1574 kfree(sc->rx_rings, M_DEVBUF);
1579 igb_create_tx_ring(struct igb_tx_ring *txr)
1581 int tsize, error, i;
1584 * Validate number of transmit descriptors. It must not exceed
1585 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1587 if (((igb_txd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN) != 0 ||
1588 (igb_txd > IGB_MAX_TXD) || (igb_txd < IGB_MIN_TXD)) {
1589 device_printf(txr->sc->dev,
1590 "Using %d TX descriptors instead of %d!\n",
1591 IGB_DEFAULT_TXD, igb_txd);
1592 txr->num_tx_desc = IGB_DEFAULT_TXD;
1594 txr->num_tx_desc = igb_txd;
1598 * Allocate TX descriptor ring
1600 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1602 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1603 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1604 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1605 if (txr->txdma.dma_vaddr == NULL) {
1606 device_printf(txr->sc->dev,
1607 "Unable to allocate TX Descriptor memory\n");
1610 txr->tx_base = txr->txdma.dma_vaddr;
1611 bzero(txr->tx_base, tsize);
1613 txr->tx_buf = kmalloc(sizeof(struct igb_tx_buf) * txr->num_tx_desc,
1614 M_DEVBUF, M_WAITOK | M_ZERO);
1617 * Allocate TX head write-back buffer
1619 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1620 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1621 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1622 if (txr->tx_hdr == NULL) {
1623 device_printf(txr->sc->dev,
1624 "Unable to allocate TX head write-back buffer\n");
1629 * Create DMA tag for TX buffers
1631 error = bus_dma_tag_create(txr->sc->parent_tag,
1632 1, 0, /* alignment, bounds */
1633 BUS_SPACE_MAXADDR, /* lowaddr */
1634 BUS_SPACE_MAXADDR, /* highaddr */
1635 NULL, NULL, /* filter, filterarg */
1636 IGB_TSO_SIZE, /* maxsize */
1637 IGB_MAX_SCATTER, /* nsegments */
1638 PAGE_SIZE, /* maxsegsize */
1639 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1640 BUS_DMA_ONEBPAGE, /* flags */
1643 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1644 kfree(txr->tx_buf, M_DEVBUF);
1650 * Create DMA maps for TX buffers
1652 for (i = 0; i < txr->num_tx_desc; ++i) {
1653 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1655 error = bus_dmamap_create(txr->tx_tag,
1656 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1658 device_printf(txr->sc->dev,
1659 "Unable to create TX DMA map\n");
1660 igb_destroy_tx_ring(txr, i);
1666 * Initialize various watermark
1668 txr->spare_desc = IGB_TX_SPARE;
1669 txr->intr_nsegs = txr->num_tx_desc / 16;
1670 txr->oact_hi_desc = txr->num_tx_desc / 2;
1671 txr->oact_lo_desc = txr->num_tx_desc / 8;
1672 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1673 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1674 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1675 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1681 igb_free_tx_ring(struct igb_tx_ring *txr)
1685 for (i = 0; i < txr->num_tx_desc; ++i) {
1686 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1688 if (txbuf->m_head != NULL) {
1689 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1690 m_freem(txbuf->m_head);
1691 txbuf->m_head = NULL;
1697 igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1701 if (txr->txdma.dma_vaddr != NULL) {
1702 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1703 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1704 txr->txdma.dma_map);
1705 bus_dma_tag_destroy(txr->txdma.dma_tag);
1706 txr->txdma.dma_vaddr = NULL;
1709 if (txr->tx_hdr != NULL) {
1710 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1711 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1713 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1717 if (txr->tx_buf == NULL)
1720 for (i = 0; i < ndesc; ++i) {
1721 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1723 KKASSERT(txbuf->m_head == NULL);
1724 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1726 bus_dma_tag_destroy(txr->tx_tag);
1728 kfree(txr->tx_buf, M_DEVBUF);
1733 igb_init_tx_ring(struct igb_tx_ring *txr)
1735 /* Clear the old descriptor contents */
1737 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1739 /* Clear TX head write-back buffer */
1743 txr->next_avail_desc = 0;
1744 txr->next_to_clean = 0;
1747 /* Set number of descriptors available */
1748 txr->tx_avail = txr->num_tx_desc;
1752 igb_init_tx_unit(struct igb_softc *sc)
1754 struct e1000_hw *hw = &sc->hw;
1758 /* Setup the Tx Descriptor Rings */
1759 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1760 struct igb_tx_ring *txr = &sc->tx_rings[i];
1761 uint64_t bus_addr = txr->txdma.dma_paddr;
1762 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1763 uint32_t txdctl = 0;
1764 uint32_t dca_txctrl;
1766 E1000_WRITE_REG(hw, E1000_TDLEN(i),
1767 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1768 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1769 (uint32_t)(bus_addr >> 32));
1770 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1771 (uint32_t)bus_addr);
1773 /* Setup the HW Tx Head and Tail descriptor pointers */
1774 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1775 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1777 txdctl |= IGB_TX_PTHRESH;
1778 txdctl |= IGB_TX_HTHRESH << 8;
1779 txdctl |= IGB_TX_WTHRESH << 16;
1780 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1781 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
1783 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1784 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1785 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1787 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
1788 (uint32_t)(hdr_paddr >> 32));
1789 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
1790 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1796 e1000_config_collision_dist(hw);
1798 /* Program the Transmit Control Register */
1799 tctl = E1000_READ_REG(hw, E1000_TCTL);
1800 tctl &= ~E1000_TCTL_CT;
1801 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1802 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1804 /* This write will effectively turn on the transmit unit. */
1805 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1809 igb_txctx(struct igb_tx_ring *txr, struct mbuf *mp)
1811 struct e1000_adv_tx_context_desc *TXD;
1812 struct igb_tx_buf *txbuf;
1813 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1814 struct ether_vlan_header *eh;
1815 struct ip *ip = NULL;
1816 int ehdrlen, ctxd, ip_hlen = 0;
1817 uint16_t etype, vlantag = 0;
1818 boolean_t offload = TRUE;
1820 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1823 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
1824 ctxd = txr->next_avail_desc;
1825 txbuf = &txr->tx_buf[ctxd];
1826 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1829 * In advanced descriptors the vlan tag must
1830 * be placed into the context descriptor, thus
1831 * we need to be here just for that setup.
1833 if (mp->m_flags & M_VLANTAG) {
1834 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1835 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1836 } else if (!offload) {
1841 * Determine where frame payload starts.
1842 * Jump over vlan headers if already present,
1843 * helpful for QinQ too.
1845 KASSERT(mp->m_len >= ETHER_HDR_LEN,
1846 ("igb_txctx_pullup is not called (eh)?\n"));
1847 eh = mtod(mp, struct ether_vlan_header *);
1848 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
1849 KASSERT(mp->m_len >= ETHER_HDR_LEN + EVL_ENCAPLEN,
1850 ("igb_txctx_pullup is not called (evh)?\n"));
1851 etype = ntohs(eh->evl_proto);
1852 ehdrlen = ETHER_HDR_LEN + EVL_ENCAPLEN;
1854 etype = ntohs(eh->evl_encap_proto);
1855 ehdrlen = ETHER_HDR_LEN;
1858 /* Set the ether header length */
1859 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
1863 KASSERT(mp->m_len >= ehdrlen + IGB_IPVHL_SIZE,
1864 ("igb_txctx_pullup is not called (eh+ip_vhl)?\n"));
1866 /* NOTE: We could only safely access ip.ip_vhl part */
1867 ip = (struct ip *)(mp->m_data + ehdrlen);
1868 ip_hlen = ip->ip_hl << 2;
1870 if (mp->m_pkthdr.csum_flags & CSUM_IP)
1871 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1875 case ETHERTYPE_IPV6:
1876 ip6 = (struct ip6_hdr *)(mp->m_data + ehdrlen);
1877 ip_hlen = sizeof(struct ip6_hdr);
1878 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV6;
1887 vlan_macip_lens |= ip_hlen;
1888 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1890 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1891 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1892 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1893 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1895 /* 82575 needs the queue index added */
1896 if (txr->sc->hw.mac.type == e1000_82575)
1897 mss_l4len_idx = txr->me << 4;
1899 /* Now copy bits into descriptor */
1900 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
1901 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
1902 TXD->seqnum_seed = htole32(0);
1903 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
1905 txbuf->m_head = NULL;
1907 /* We've consumed the first desc, adjust counters */
1908 if (++ctxd == txr->num_tx_desc)
1910 txr->next_avail_desc = ctxd;
1917 igb_txeof(struct igb_tx_ring *txr)
1919 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
1920 int first, hdr, avail;
1922 if (txr->tx_avail == txr->num_tx_desc)
1925 first = txr->next_to_clean;
1926 hdr = *(txr->tx_hdr);
1931 avail = txr->tx_avail;
1932 while (first != hdr) {
1933 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
1936 if (txbuf->m_head) {
1937 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1938 m_freem(txbuf->m_head);
1939 txbuf->m_head = NULL;
1942 if (++first == txr->num_tx_desc)
1945 txr->next_to_clean = first;
1946 txr->tx_avail = avail;
1949 * If we have a minimum free, clear IFF_OACTIVE
1950 * to tell the stack that it is OK to send packets.
1952 if (IGB_IS_NOT_OACTIVE(txr)) {
1953 ifp->if_flags &= ~IFF_OACTIVE;
1956 * We have enough TX descriptors, turn off
1957 * the watchdog. We allow small amount of
1958 * packets (roughly intr_nsegs) pending on
1959 * the transmit ring.
1966 igb_create_rx_ring(struct igb_rx_ring *rxr)
1968 int rsize, i, error;
1971 * Validate number of receive descriptors. It must not exceed
1972 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1974 if (((igb_rxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN) != 0 ||
1975 (igb_rxd > IGB_MAX_RXD) || (igb_rxd < IGB_MIN_RXD)) {
1976 device_printf(rxr->sc->dev,
1977 "Using %d RX descriptors instead of %d!\n",
1978 IGB_DEFAULT_RXD, igb_rxd);
1979 rxr->num_rx_desc = IGB_DEFAULT_RXD;
1981 rxr->num_rx_desc = igb_rxd;
1985 * Allocate RX descriptor ring
1987 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
1989 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
1990 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
1991 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
1992 &rxr->rxdma.dma_paddr);
1993 if (rxr->rxdma.dma_vaddr == NULL) {
1994 device_printf(rxr->sc->dev,
1995 "Unable to allocate RxDescriptor memory\n");
1998 rxr->rx_base = rxr->rxdma.dma_vaddr;
1999 bzero(rxr->rx_base, rsize);
2001 rxr->rx_buf = kmalloc(sizeof(struct igb_rx_buf) * rxr->num_rx_desc,
2002 M_DEVBUF, M_WAITOK | M_ZERO);
2005 * Create DMA tag for RX buffers
2007 error = bus_dma_tag_create(rxr->sc->parent_tag,
2008 1, 0, /* alignment, bounds */
2009 BUS_SPACE_MAXADDR, /* lowaddr */
2010 BUS_SPACE_MAXADDR, /* highaddr */
2011 NULL, NULL, /* filter, filterarg */
2012 MCLBYTES, /* maxsize */
2014 MCLBYTES, /* maxsegsize */
2015 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2018 device_printf(rxr->sc->dev,
2019 "Unable to create RX payload DMA tag\n");
2020 kfree(rxr->rx_buf, M_DEVBUF);
2026 * Create spare DMA map for RX buffers
2028 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2031 device_printf(rxr->sc->dev,
2032 "Unable to create spare RX DMA maps\n");
2033 bus_dma_tag_destroy(rxr->rx_tag);
2034 kfree(rxr->rx_buf, M_DEVBUF);
2040 * Create DMA maps for RX buffers
2042 for (i = 0; i < rxr->num_rx_desc; i++) {
2043 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2045 error = bus_dmamap_create(rxr->rx_tag,
2046 BUS_DMA_WAITOK, &rxbuf->map);
2048 device_printf(rxr->sc->dev,
2049 "Unable to create RX DMA maps\n");
2050 igb_destroy_rx_ring(rxr, i);
2058 igb_free_rx_ring(struct igb_rx_ring *rxr)
2062 for (i = 0; i < rxr->num_rx_desc; ++i) {
2063 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2065 if (rxbuf->m_head != NULL) {
2066 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2067 m_freem(rxbuf->m_head);
2068 rxbuf->m_head = NULL;
2072 if (rxr->fmp != NULL)
2079 igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2083 if (rxr->rxdma.dma_vaddr != NULL) {
2084 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2085 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2086 rxr->rxdma.dma_map);
2087 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2088 rxr->rxdma.dma_vaddr = NULL;
2091 if (rxr->rx_buf == NULL)
2094 for (i = 0; i < ndesc; ++i) {
2095 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2097 KKASSERT(rxbuf->m_head == NULL);
2098 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2100 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2101 bus_dma_tag_destroy(rxr->rx_tag);
2103 kfree(rxr->rx_buf, M_DEVBUF);
2108 igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2110 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2111 rxd->wb.upper.status_error = 0;
2115 igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2118 bus_dma_segment_t seg;
2120 struct igb_rx_buf *rxbuf;
2123 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2126 if_printf(&rxr->sc->arpcom.ac_if,
2127 "Unable to allocate RX mbuf\n");
2131 m->m_len = m->m_pkthdr.len = MCLBYTES;
2133 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2134 m_adj(m, ETHER_ALIGN);
2136 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2137 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2141 if_printf(&rxr->sc->arpcom.ac_if,
2142 "Unable to load RX mbuf\n");
2147 rxbuf = &rxr->rx_buf[i];
2148 if (rxbuf->m_head != NULL)
2149 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2152 rxbuf->map = rxr->rx_sparemap;
2153 rxr->rx_sparemap = map;
2156 rxbuf->paddr = seg.ds_addr;
2158 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2163 igb_init_rx_ring(struct igb_rx_ring *rxr)
2167 /* Clear the ring contents */
2169 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
2171 /* Now replenish the ring mbufs */
2172 for (i = 0; i < rxr->num_rx_desc; ++i) {
2175 error = igb_newbuf(rxr, i, TRUE);
2180 /* Setup our descriptor indices */
2181 rxr->next_to_check = 0;
2185 rxr->discard = FALSE;
2191 igb_init_rx_unit(struct igb_softc *sc)
2193 struct ifnet *ifp = &sc->arpcom.ac_if;
2194 struct e1000_hw *hw = &sc->hw;
2195 uint32_t rctl, rxcsum, srrctl = 0;
2199 * Make sure receives are disabled while setting
2200 * up the descriptor ring
2202 rctl = E1000_READ_REG(hw, E1000_RCTL);
2203 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2207 ** Set up for header split
2209 if (igb_header_split) {
2210 /* Use a standard mbuf for the header */
2211 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2212 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2215 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2218 ** Set up for jumbo frames
2220 if (ifp->if_mtu > ETHERMTU) {
2221 rctl |= E1000_RCTL_LPE;
2223 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2224 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2225 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2226 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2227 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2228 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2230 /* Set maximum packet len */
2231 psize = adapter->max_frame_size;
2232 /* are we on a vlan? */
2233 if (adapter->ifp->if_vlantrunk != NULL)
2234 psize += VLAN_TAG_SIZE;
2235 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2237 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2238 rctl |= E1000_RCTL_SZ_2048;
2241 rctl &= ~E1000_RCTL_LPE;
2242 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2243 rctl |= E1000_RCTL_SZ_2048;
2246 /* Setup the Base and Length of the Rx Descriptor Rings */
2247 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2248 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2249 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2252 E1000_WRITE_REG(hw, E1000_RDLEN(i),
2253 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
2254 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2255 (uint32_t)(bus_addr >> 32));
2256 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2257 (uint32_t)bus_addr);
2258 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2259 /* Enable this Queue */
2260 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2261 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2262 rxdctl &= 0xFFF00000;
2263 rxdctl |= IGB_RX_PTHRESH;
2264 rxdctl |= IGB_RX_HTHRESH << 8;
2265 rxdctl |= IGB_RX_WTHRESH << 16;
2266 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2269 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2270 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2273 * Receive Checksum Offload for TCP and UDP
2275 * Checksum offloading is also enabled if multiple receive
2276 * queue is to be supported, since we need it to figure out
2279 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2282 * PCSD must be enabled to enable multiple
2285 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2288 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2291 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2293 if (IGB_ENABLE_HWRSS(sc)) {
2294 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
2295 uint32_t reta_shift;
2300 * When we reach here, RSS has already been disabled
2301 * in igb_stop(), so we could safely configure RSS key
2302 * and redirect table.
2308 toeplitz_get_key(key, sizeof(key));
2309 for (i = 0; i < IGB_NRSSRK; ++i) {
2312 rssrk = IGB_RSSRK_VAL(key, i);
2313 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2315 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
2319 * Configure RSS redirect table in following fashion:
2320 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2322 reta_shift = IGB_RETA_SHIFT;
2323 if (hw->mac.type == e1000_82575)
2324 reta_shift = IGB_RETA_SHIFT_82575;
2327 for (j = 0; j < IGB_NRETA; ++j) {
2330 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2333 q = (r % sc->rx_ring_inuse) << reta_shift;
2334 reta |= q << (8 * i);
2337 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2338 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2342 * Enable multiple receive queues.
2343 * Enable IPv4 RSS standard hash functions.
2344 * Disable RSS interrupt on 82575
2346 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2347 E1000_MRQC_ENABLE_RSS_4Q |
2348 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2349 E1000_MRQC_RSS_FIELD_IPV4);
2352 /* Setup the Receive Control Register */
2353 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2354 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2355 E1000_RCTL_RDMTS_HALF |
2356 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2357 /* Strip CRC bytes. */
2358 rctl |= E1000_RCTL_SECRC;
2359 /* Make sure VLAN Filters are off */
2360 rctl &= ~E1000_RCTL_VFE;
2361 /* Don't store bad packets */
2362 rctl &= ~E1000_RCTL_SBP;
2364 /* Enable Receives */
2365 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2368 * Setup the HW Rx Head and Tail Descriptor Pointers
2369 * - needs to be after enable
2371 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2372 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2374 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
2375 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
2380 igb_rxeof(struct igb_rx_ring *rxr, int count)
2382 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2383 union e1000_adv_rx_desc *cur;
2387 i = rxr->next_to_check;
2388 cur = &rxr->rx_base[i];
2389 staterr = le32toh(cur->wb.upper.status_error);
2391 if ((staterr & E1000_RXD_STAT_DD) == 0)
2394 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
2395 struct pktinfo *pi = NULL, pi0;
2396 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2397 struct mbuf *m = NULL;
2400 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2404 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2406 struct mbuf *mp = rxbuf->m_head;
2407 uint32_t hash, hashtype;
2411 len = le16toh(cur->wb.upper.length);
2412 if (rxr->sc->hw.mac.type == e1000_i350 &&
2413 (staterr & E1000_RXDEXT_STATERR_LB))
2414 vlan = be16toh(cur->wb.upper.vlan);
2416 vlan = le16toh(cur->wb.upper.vlan);
2418 hash = le32toh(cur->wb.lower.hi_dword.rss);
2419 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2420 E1000_RXDADV_RSSTYPE_MASK;
2422 IGB_RSS_DPRINTF(rxr->sc, 10,
2423 "ring%d, hash 0x%08x, hashtype %u\n",
2424 rxr->me, hash, hashtype);
2426 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2427 BUS_DMASYNC_POSTREAD);
2429 if (igb_newbuf(rxr, i, FALSE) != 0) {
2435 if (rxr->fmp == NULL) {
2436 mp->m_pkthdr.len = len;
2440 rxr->lmp->m_next = mp;
2441 rxr->lmp = rxr->lmp->m_next;
2442 rxr->fmp->m_pkthdr.len += len;
2450 m->m_pkthdr.rcvif = ifp;
2453 if (ifp->if_capenable & IFCAP_RXCSUM)
2454 igb_rxcsum(staterr, m);
2456 if (staterr & E1000_RXD_STAT_VP) {
2457 m->m_pkthdr.ether_vlantag = vlan;
2458 m->m_flags |= M_VLANTAG;
2461 if (ifp->if_capenable & IFCAP_RSS) {
2462 pi = igb_rssinfo(m, &pi0,
2463 hash, hashtype, staterr);
2465 #ifdef IGB_RSS_DEBUG
2472 igb_setup_rxdesc(cur, rxbuf);
2474 rxr->discard = TRUE;
2476 rxr->discard = FALSE;
2477 if (rxr->fmp != NULL) {
2486 ether_input_pkt(ifp, m, pi);
2488 /* Advance our pointers to the next descriptor. */
2489 if (++i == rxr->num_rx_desc)
2492 cur = &rxr->rx_base[i];
2493 staterr = le32toh(cur->wb.upper.status_error);
2495 rxr->next_to_check = i;
2498 i = rxr->num_rx_desc - 1;
2499 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2504 igb_set_vlan(struct igb_softc *sc)
2506 struct e1000_hw *hw = &sc->hw;
2509 struct ifnet *ifp = sc->arpcom.ac_if;
2513 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2517 reg = E1000_READ_REG(hw, E1000_CTRL);
2518 reg |= E1000_CTRL_VME;
2519 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2522 /* Enable the Filter Table */
2523 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2524 reg = E1000_READ_REG(hw, E1000_RCTL);
2525 reg &= ~E1000_RCTL_CFIEN;
2526 reg |= E1000_RCTL_VFE;
2527 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2531 /* Update the frame size */
2532 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2533 sc->max_frame_size + VLAN_TAG_SIZE);
2536 /* Don't bother with table if no vlans */
2537 if ((adapter->num_vlans == 0) ||
2538 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2541 ** A soft reset zero's out the VFTA, so
2542 ** we need to repopulate it now.
2544 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2545 if (adapter->shadow_vfta[i] != 0) {
2546 if (adapter->vf_ifp)
2547 e1000_vfta_set_vf(hw,
2548 adapter->shadow_vfta[i], TRUE);
2550 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2551 i, adapter->shadow_vfta[i]);
2557 igb_enable_intr(struct igb_softc *sc)
2559 lwkt_serialize_handler_enable(&sc->main_serialize);
2561 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2562 /* XXX MSI-X should use sc->intr_mask */
2563 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2564 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2565 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2566 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2568 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2570 E1000_WRITE_FLUSH(&sc->hw);
2574 igb_disable_intr(struct igb_softc *sc)
2576 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2577 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2578 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2580 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2581 E1000_WRITE_FLUSH(&sc->hw);
2583 lwkt_serialize_handler_disable(&sc->main_serialize);
2587 * Bit of a misnomer, what this really means is
2588 * to enable OS management of the system... aka
2589 * to disable special hardware management features
2592 igb_get_mgmt(struct igb_softc *sc)
2594 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2595 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2596 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2598 /* disable hardware interception of ARP */
2599 manc &= ~E1000_MANC_ARP_EN;
2601 /* enable receiving management packets to the host */
2602 manc |= E1000_MANC_EN_MNG2HOST;
2603 manc2h |= 1 << 5; /* Mng Port 623 */
2604 manc2h |= 1 << 6; /* Mng Port 664 */
2605 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2606 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2611 * Give control back to hardware management controller
2615 igb_rel_mgmt(struct igb_softc *sc)
2617 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2618 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2620 /* Re-enable hardware interception of ARP */
2621 manc |= E1000_MANC_ARP_EN;
2622 manc &= ~E1000_MANC_EN_MNG2HOST;
2624 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2629 * Sets CTRL_EXT:DRV_LOAD bit.
2631 * For ASF and Pass Through versions of f/w this means that
2632 * the driver is loaded.
2635 igb_get_hw_control(struct igb_softc *sc)
2642 /* Let firmware know the driver has taken over */
2643 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2644 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2645 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2649 * Resets CTRL_EXT:DRV_LOAD bit.
2651 * For ASF and Pass Through versions of f/w this means that the
2652 * driver is no longer loaded.
2655 igb_rel_hw_control(struct igb_softc *sc)
2662 /* Let firmware taken over control of h/w */
2663 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2664 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2665 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2669 igb_is_valid_ether_addr(const uint8_t *addr)
2671 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2673 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2679 * Enable PCI Wake On Lan capability
2682 igb_enable_wol(device_t dev)
2684 uint16_t cap, status;
2687 /* First find the capabilities pointer*/
2688 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2690 /* Read the PM Capabilities */
2691 id = pci_read_config(dev, cap, 1);
2692 if (id != PCIY_PMG) /* Something wrong */
2696 * OK, we have the power capabilities,
2697 * so now get the status register
2699 cap += PCIR_POWER_STATUS;
2700 status = pci_read_config(dev, cap, 2);
2701 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2702 pci_write_config(dev, cap, status, 2);
2706 igb_update_stats_counters(struct igb_softc *sc)
2708 struct e1000_hw *hw = &sc->hw;
2709 struct e1000_hw_stats *stats;
2710 struct ifnet *ifp = &sc->arpcom.ac_if;
2713 * The virtual function adapter has only a
2714 * small controlled set of stats, do only
2718 igb_update_vf_stats_counters(sc);
2723 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2724 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2726 E1000_READ_REG(hw,E1000_SYMERRS);
2727 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2730 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2731 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2732 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2733 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2735 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2736 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2737 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2738 stats->dc += E1000_READ_REG(hw, E1000_DC);
2739 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2740 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2741 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2744 * For watchdog management we need to know if we have been
2745 * paused during the last interval, so capture that here.
2747 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2748 stats->xoffrxc += sc->pause_frames;
2749 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2750 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2751 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2752 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2753 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2754 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2755 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2756 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2757 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2758 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2759 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2760 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2762 /* For the 64-bit byte counters the low dword must be read first. */
2763 /* Both registers clear on the read of the high dword */
2765 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2766 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2767 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2768 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2770 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2771 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2772 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2773 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2774 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2776 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2777 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2779 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2780 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2781 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2782 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2783 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2784 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2785 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2786 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2787 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2788 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2790 /* Interrupt Counts */
2792 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2793 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2794 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2795 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2796 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2797 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2798 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2799 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2800 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2802 /* Host to Card Statistics */
2804 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2805 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2806 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2807 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2808 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2809 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2810 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2811 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2812 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2813 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2814 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2815 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2816 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2817 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2819 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2820 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2821 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2822 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2823 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2824 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2826 ifp->if_collisions = stats->colc;
2829 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2830 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2833 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2835 /* Driver specific counters */
2836 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2837 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2838 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2839 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2840 sc->packet_buf_alloc_tx =
2841 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2842 sc->packet_buf_alloc_rx =
2843 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2847 igb_vf_init_stats(struct igb_softc *sc)
2849 struct e1000_hw *hw = &sc->hw;
2850 struct e1000_vf_stats *stats;
2853 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2854 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2855 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2856 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2857 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
2861 igb_update_vf_stats_counters(struct igb_softc *sc)
2863 struct e1000_hw *hw = &sc->hw;
2864 struct e1000_vf_stats *stats;
2866 if (sc->link_speed == 0)
2870 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
2871 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
2872 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
2873 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
2874 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
2877 #ifdef DEVICE_POLLING
2880 igb_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2882 struct igb_softc *sc = ifp->if_softc;
2885 ASSERT_SERIALIZED(&sc->main_serialize);
2889 igb_disable_intr(sc);
2892 case POLL_DEREGISTER:
2893 igb_enable_intr(sc);
2896 case POLL_AND_CHECK_STATUS:
2897 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2898 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
2899 sc->hw.mac.get_link_status = 1;
2900 igb_update_link_status(sc);
2904 if (ifp->if_flags & IFF_RUNNING) {
2905 struct igb_tx_ring *txr;
2908 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2909 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2911 lwkt_serialize_enter(&rxr->rx_serialize);
2912 igb_rxeof(rxr, count);
2913 lwkt_serialize_exit(&rxr->rx_serialize);
2916 txr = &sc->tx_rings[0];
2917 lwkt_serialize_enter(&txr->tx_serialize);
2919 if (!ifq_is_empty(&ifp->if_snd))
2921 lwkt_serialize_exit(&txr->tx_serialize);
2927 #endif /* DEVICE_POLLING */
2932 struct igb_softc *sc = xsc;
2933 struct ifnet *ifp = &sc->arpcom.ac_if;
2936 ASSERT_SERIALIZED(&sc->main_serialize);
2938 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
2943 if (ifp->if_flags & IFF_RUNNING) {
2944 struct igb_tx_ring *txr;
2947 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2948 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2950 if (eicr & rxr->rx_intr_mask) {
2951 lwkt_serialize_enter(&rxr->rx_serialize);
2953 lwkt_serialize_exit(&rxr->rx_serialize);
2957 txr = &sc->tx_rings[0];
2958 if (eicr & txr->tx_intr_mask) {
2959 lwkt_serialize_enter(&txr->tx_serialize);
2961 if (!ifq_is_empty(&ifp->if_snd))
2963 lwkt_serialize_exit(&txr->tx_serialize);
2967 if (eicr & E1000_EICR_OTHER) {
2968 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2970 /* Link status change */
2971 if (icr & E1000_ICR_LSC) {
2972 sc->hw.mac.get_link_status = 1;
2973 igb_update_link_status(sc);
2978 * Reading EICR has the side effect to clear interrupt mask,
2979 * so all interrupts need to be enabled here.
2981 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2985 igb_shared_intr(void *xsc)
2987 struct igb_softc *sc = xsc;
2988 struct ifnet *ifp = &sc->arpcom.ac_if;
2991 ASSERT_SERIALIZED(&sc->main_serialize);
2993 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2996 if (reg_icr == 0xffffffff)
2999 /* Definitely not our interrupt. */
3003 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3006 if (ifp->if_flags & IFF_RUNNING) {
3007 struct igb_tx_ring *txr;
3010 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3011 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3013 lwkt_serialize_enter(&rxr->rx_serialize);
3015 lwkt_serialize_exit(&rxr->rx_serialize);
3018 txr = &sc->tx_rings[0];
3019 lwkt_serialize_enter(&txr->tx_serialize);
3021 if (!ifq_is_empty(&ifp->if_snd))
3023 lwkt_serialize_exit(&txr->tx_serialize);
3026 /* Link status change */
3027 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3028 sc->hw.mac.get_link_status = 1;
3029 igb_update_link_status(sc);
3032 if (reg_icr & E1000_ICR_RXO)
3037 igb_txctx_pullup(struct igb_tx_ring *txr, struct mbuf **m0)
3039 struct mbuf *m = *m0;
3040 struct ether_header *eh;
3043 txr->ctx_try_pullup++;
3045 len = ETHER_HDR_LEN + IGB_IPVHL_SIZE;
3047 if (__predict_false(!M_WRITABLE(m))) {
3048 if (__predict_false(m->m_len < ETHER_HDR_LEN)) {
3054 eh = mtod(m, struct ether_header *);
3056 if (eh->ether_type == htons(ETHERTYPE_VLAN))
3057 len += EVL_ENCAPLEN;
3059 if (m->m_len < len) {
3068 if (__predict_false(m->m_len < ETHER_HDR_LEN)) {
3070 m = m_pullup(m, ETHER_HDR_LEN);
3072 txr->ctx_pullup1_failed++;
3078 eh = mtod(m, struct ether_header *);
3080 if (eh->ether_type == htons(ETHERTYPE_VLAN))
3081 len += EVL_ENCAPLEN;
3083 if (m->m_len < len) {
3085 m = m_pullup(m, len);
3087 txr->ctx_pullup2_failed++;
3097 igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp)
3099 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3101 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3102 union e1000_adv_tx_desc *txd = NULL;
3103 struct mbuf *m_head = *m_headp;
3104 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3105 int maxsegs, nsegs, i, j, error, last = 0;
3106 uint32_t hdrlen = 0;
3108 if (m_head->m_len < IGB_TXCSUM_MINHL &&
3109 ((m_head->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) ||
3110 (m_head->m_flags & M_VLANTAG))) {
3112 * Make sure that ethernet header and ip.ip_hl are in
3113 * contiguous memory, since if TXCSUM or VLANTAG is
3114 * enabled, later TX context descriptor's setup need
3115 * to access ip.ip_hl.
3117 error = igb_txctx_pullup(txr, m_headp);
3119 KKASSERT(*m_headp == NULL);
3125 /* Set basic descriptor constants */
3126 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3127 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3128 if (m_head->m_flags & M_VLANTAG)
3129 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3132 * Map the packet for DMA.
3134 tx_buf = &txr->tx_buf[txr->next_avail_desc];
3135 tx_buf_mapped = tx_buf;
3138 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3139 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
3140 if (maxsegs > IGB_MAX_SCATTER)
3141 maxsegs = IGB_MAX_SCATTER;
3143 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3144 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3146 if (error == ENOBUFS)
3147 txr->sc->mbuf_defrag_failed++;
3149 txr->sc->no_tx_dma_setup++;
3155 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3161 * Set up the context descriptor:
3162 * used when any hardware offload is done.
3163 * This includes CSUM, VLAN, and TSO. It
3164 * will use the first descriptor.
3166 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3167 if (igb_tso_setup(txr, m_head, &hdrlen)) {
3168 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3169 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3170 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3173 } else if (igb_tx_ctx_setup(txr, m_head))
3174 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3176 if (igb_txctx(txr, m_head)) {
3177 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
3178 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3179 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
3184 txr->tx_nsegs += nsegs;
3185 if (txr->tx_nsegs >= txr->intr_nsegs) {
3187 * Report Status (RS) is turned on every intr_nsegs
3188 * descriptors (roughly).
3191 cmd_rs = E1000_ADVTXD_DCMD_RS;
3194 /* Calculate payload length */
3195 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3196 << E1000_ADVTXD_PAYLEN_SHIFT);
3198 /* 82575 needs the queue index added */
3199 if (txr->sc->hw.mac.type == e1000_82575)
3200 olinfo_status |= txr->me << 4;
3202 /* Set up our transmit descriptors */
3203 i = txr->next_avail_desc;
3204 for (j = 0; j < nsegs; j++) {
3206 bus_addr_t seg_addr;
3208 tx_buf = &txr->tx_buf[i];
3209 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3210 seg_addr = segs[j].ds_addr;
3211 seg_len = segs[j].ds_len;
3213 txd->read.buffer_addr = htole64(seg_addr);
3214 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3215 txd->read.olinfo_status = htole32(olinfo_status);
3217 if (++i == txr->num_tx_desc)
3219 tx_buf->m_head = NULL;
3222 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3223 txr->next_avail_desc = i;
3224 txr->tx_avail -= nsegs;
3226 tx_buf->m_head = m_head;
3227 tx_buf_mapped->map = tx_buf->map;
3231 * Last Descriptor of Packet needs End Of Packet (EOP)
3233 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
3236 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000
3237 * that this frame is available to transmit.
3239 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), i);
3246 igb_start(struct ifnet *ifp)
3248 struct igb_softc *sc = ifp->if_softc;
3249 struct igb_tx_ring *txr = &sc->tx_rings[0];
3250 struct mbuf *m_head;
3252 ASSERT_SERIALIZED(&txr->tx_serialize);
3254 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
3257 if (!sc->link_active) {
3258 ifq_purge(&ifp->if_snd);
3262 if (!IGB_IS_NOT_OACTIVE(txr))
3265 while (!ifq_is_empty(&ifp->if_snd)) {
3266 if (IGB_IS_OACTIVE(txr)) {
3267 ifp->if_flags |= IFF_OACTIVE;
3268 /* Set watchdog on */
3273 m_head = ifq_dequeue(&ifp->if_snd, NULL);
3277 if (igb_encap(txr, &m_head)) {
3282 /* Send a copy of the frame to the BPF listener */
3283 ETHER_BPF_MTAP(ifp, m_head);
3288 igb_watchdog(struct ifnet *ifp)
3290 struct igb_softc *sc = ifp->if_softc;
3291 struct igb_tx_ring *txr = &sc->tx_rings[0];
3293 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3296 * If flow control has paused us since last checking
3297 * it invalidates the watchdog timing, so dont run it.
3299 if (sc->pause_frames) {
3300 sc->pause_frames = 0;
3305 if_printf(ifp, "Watchdog timeout -- resetting\n");
3306 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3307 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3308 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3309 if_printf(ifp, "TX(%d) desc avail = %d, "
3310 "Next TX to Clean = %d\n",
3311 txr->me, txr->tx_avail, txr->next_to_clean);
3314 sc->watchdog_events++;
3317 if (!ifq_is_empty(&ifp->if_snd))
3322 igb_set_eitr(struct igb_softc *sc)
3326 if (sc->intr_rate > 0) {
3327 if (sc->hw.mac.type == e1000_82575) {
3328 itr = 1000000000 / 256 / sc->intr_rate;
3331 * Document is wrong on the 2 bits left shift
3334 itr = 1000000 / sc->intr_rate;
3339 if (sc->hw.mac.type == e1000_82575)
3342 itr |= E1000_EITR_CNT_IGNR;
3343 E1000_WRITE_REG(&sc->hw, E1000_EITR(0), itr);
3347 igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3349 struct igb_softc *sc = (void *)arg1;
3350 struct ifnet *ifp = &sc->arpcom.ac_if;
3351 int error, intr_rate;
3353 intr_rate = sc->intr_rate;
3354 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3355 if (error || req->newptr == NULL)
3360 ifnet_serialize_all(ifp);
3362 sc->intr_rate = intr_rate;
3363 if (ifp->if_flags & IFF_RUNNING)
3366 ifnet_deserialize_all(ifp);
3369 if_printf(ifp, "Interrupt rate set to %d/sec\n", sc->intr_rate);
3374 igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3376 struct igb_softc *sc = (void *)arg1;
3377 struct ifnet *ifp = &sc->arpcom.ac_if;
3378 struct igb_tx_ring *txr = &sc->tx_rings[0];
3381 nsegs = txr->intr_nsegs;
3382 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3383 if (error || req->newptr == NULL)
3388 ifnet_serialize_all(ifp);
3390 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
3391 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3395 txr->intr_nsegs = nsegs;
3398 ifnet_deserialize_all(ifp);
3404 igb_init_intr(struct igb_softc *sc)
3406 igb_set_intr_mask(sc);
3407 if (sc->flags & IGB_FLAG_SHARED_INTR)
3410 igb_init_unshared_intr(sc);
3414 igb_init_unshared_intr(struct igb_softc *sc)
3416 struct e1000_hw *hw = &sc->hw;
3417 const struct igb_rx_ring *rxr;
3418 const struct igb_tx_ring *txr;
3419 uint32_t ivar, index;
3423 * Enable extended mode
3425 if (sc->hw.mac.type != e1000_82575) {
3426 E1000_WRITE_REG(hw, E1000_GPIE, E1000_GPIE_NSICR);
3430 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3431 tmp |= E1000_CTRL_EXT_IRCA;
3432 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3436 * Map TX/RX interrupts to EICR
3438 switch (sc->hw.mac.type) {
3442 case e1000_vfadapt_i350:
3444 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3445 rxr = &sc->rx_rings[i];
3448 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3453 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3457 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3459 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3462 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3463 txr = &sc->tx_rings[i];
3466 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3471 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3475 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3477 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3479 /* Clear unused IVAR_MISC */
3480 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3485 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3486 rxr = &sc->rx_rings[i];
3488 index = i & 0x7; /* Each IVAR has two entries */
3489 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3494 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3498 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3500 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3503 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3504 txr = &sc->tx_rings[i];
3506 index = i & 0x7; /* Each IVAR has two entries */
3507 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3512 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3516 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3518 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3520 /* Clear unused IVAR_MISC */
3521 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3526 * Enable necessary interrupt bits.
3528 * The name of the register is confusing; in addition to
3529 * configuring the first vector of MSI-X, it also configures
3530 * which bits of EICR could be set by the hardware even when
3531 * MSI or line interrupt is used; it thus controls interrupt
3532 * generation. It MUST be configured explicitly; the default
3533 * value mentioned in the datasheet is wrong: RX queue0 and
3534 * TX queue0 are NOT enabled by default.
3536 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3544 * Configure interrupt moderation
3550 igb_setup_intr(struct igb_softc *sc)
3552 struct ifnet *ifp = &sc->arpcom.ac_if;
3553 int error, i, intr_bit, intr_bitmax;
3556 * Setup interrupt mask
3558 switch (sc->hw.mac.type) {
3560 intr_bitmax = IGB_MAX_TXRXINT_82575;
3563 intr_bitmax = IGB_MAX_TXRXINT_82580;
3566 intr_bitmax = IGB_MAX_TXRXINT_I350;
3569 intr_bitmax = IGB_MAX_TXRXINT_82576;
3572 intr_bitmax = IGB_MIN_TXRXINT;
3576 for (i = 0; i < sc->tx_ring_cnt; ++i)
3577 igb_setup_tx_intr(&sc->tx_rings[i], &intr_bit, intr_bitmax);
3578 for (i = 0; i < sc->rx_ring_cnt; ++i)
3579 igb_setup_rx_intr(&sc->rx_rings[i], &intr_bit, intr_bitmax);
3581 igb_set_intr_mask(sc);
3583 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
3586 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
3588 sc->flags |= IGB_FLAG_SHARED_INTR;
3590 device_printf(sc->dev, "IRQ shared\n");
3591 } else if (bootverbose) {
3592 device_printf(sc->dev, "IRQ unshared\n");
3596 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
3597 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_shared_intr : igb_intr,
3598 sc, &sc->intr_tag, &sc->main_serialize);
3600 device_printf(sc->dev, "Failed to register interrupt handler");
3604 ifp->if_cpuid = rman_get_cpuid(sc->intr_res);
3605 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
3611 igb_setup_tx_intr(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
3613 if (txr->sc->hw.mac.type == e1000_82575) {
3614 txr->tx_intr_bit = 0; /* unused */
3617 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3620 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3623 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3626 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3629 panic("unsupported # of TX ring, %d\n", txr->me);
3632 int intr_bit = *intr_bit0;
3634 txr->tx_intr_bit = intr_bit % intr_bitmax;
3635 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
3637 *intr_bit0 = intr_bit + 1;
3642 igb_setup_rx_intr(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
3644 if (rxr->sc->hw.mac.type == e1000_82575) {
3645 rxr->rx_intr_bit = 0; /* unused */
3648 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3651 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3654 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3657 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3660 panic("unsupported # of RX ring, %d\n", rxr->me);
3663 int intr_bit = *intr_bit0;
3665 rxr->rx_intr_bit = intr_bit % intr_bitmax;
3666 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
3668 *intr_bit0 = intr_bit + 1;
3673 igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3675 struct igb_softc *sc = ifp->if_softc;
3677 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3678 sc->tx_serialize, sc->rx_serialize, slz);
3682 igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3684 struct igb_softc *sc = ifp->if_softc;
3686 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3687 sc->tx_serialize, sc->rx_serialize, slz);
3691 igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3693 struct igb_softc *sc = ifp->if_softc;
3695 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3696 sc->tx_serialize, sc->rx_serialize, slz);
3702 igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3703 boolean_t serialized)
3705 struct igb_softc *sc = ifp->if_softc;
3707 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3708 sc->tx_serialize, sc->rx_serialize, slz, serialized);
3711 #endif /* INVARIANTS */
3714 igb_set_intr_mask(struct igb_softc *sc)
3718 sc->intr_mask = E1000_EICR_OTHER;
3719 for (i = 0; i < sc->rx_ring_inuse; ++i)
3720 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
3721 for (i = 0; i < sc->tx_ring_cnt; ++i)
3722 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
3724 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",