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
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24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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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 *);
202 static int igb_alloc_intr(struct igb_softc *);
203 static void igb_free_intr(struct igb_softc *);
205 /* Management and WOL Support */
206 static void igb_get_mgmt(struct igb_softc *);
207 static void igb_rel_mgmt(struct igb_softc *);
208 static void igb_get_hw_control(struct igb_softc *);
209 static void igb_rel_hw_control(struct igb_softc *);
210 static void igb_enable_wol(device_t);
212 static device_method_t igb_methods[] = {
213 /* Device interface */
214 DEVMETHOD(device_probe, igb_probe),
215 DEVMETHOD(device_attach, igb_attach),
216 DEVMETHOD(device_detach, igb_detach),
217 DEVMETHOD(device_shutdown, igb_shutdown),
218 DEVMETHOD(device_suspend, igb_suspend),
219 DEVMETHOD(device_resume, igb_resume),
223 static driver_t igb_driver = {
226 sizeof(struct igb_softc),
229 static devclass_t igb_devclass;
231 DECLARE_DUMMY_MODULE(if_igb);
232 MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
233 DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
235 static int igb_rxd = IGB_DEFAULT_RXD;
236 static int igb_txd = IGB_DEFAULT_TXD;
237 static int igb_rxr = 0;
238 static int igb_msi_enable = 1;
239 static int igb_msix_enable = 1;
240 static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
241 static int igb_fc_setting = e1000_fc_full;
244 * DMA Coalescing, only for i350 - default to off,
245 * this feature is for power savings
247 static int igb_dma_coalesce = 0;
249 TUNABLE_INT("hw.igb.rxd", &igb_rxd);
250 TUNABLE_INT("hw.igb.txd", &igb_txd);
251 TUNABLE_INT("hw.igb.rxr", &igb_rxr);
252 TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
253 TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
254 TUNABLE_INT("hw.igb.fc_setting", &igb_fc_setting);
257 TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
258 TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
261 igb_rxcsum(uint32_t staterr, struct mbuf *mp)
263 /* Ignore Checksum bit is set */
264 if (staterr & E1000_RXD_STAT_IXSM)
267 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
269 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
271 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
272 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
273 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
274 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
275 mp->m_pkthdr.csum_data = htons(0xffff);
280 static __inline struct pktinfo *
281 igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
282 uint32_t hash, uint32_t hashtype, uint32_t staterr)
285 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
286 pi->pi_netisr = NETISR_IP;
288 pi->pi_l3proto = IPPROTO_TCP;
291 case E1000_RXDADV_RSSTYPE_IPV4:
292 if (staterr & E1000_RXD_STAT_IXSM)
296 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
297 E1000_RXD_STAT_TCPCS) {
298 pi->pi_netisr = NETISR_IP;
300 pi->pi_l3proto = IPPROTO_UDP;
308 m->m_flags |= M_HASH;
309 m->m_pkthdr.hash = toeplitz_hash(hash);
314 igb_probe(device_t dev)
316 const struct igb_device *d;
319 vid = pci_get_vendor(dev);
320 did = pci_get_device(dev);
322 for (d = igb_devices; d->desc != NULL; ++d) {
323 if (vid == d->vid && did == d->did) {
324 device_set_desc(dev, d->desc);
332 igb_attach(device_t dev)
334 struct igb_softc *sc = device_get_softc(dev);
335 uint16_t eeprom_data;
336 int error = 0, i, j, ring_max;
340 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
341 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
342 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
343 igb_sysctl_nvm_info, "I", "NVM Information");
345 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
346 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
347 OID_AUTO, "enable_aim", CTLTYPE_INT|CTLFLAG_RW,
348 &igb_enable_aim, 1, "Interrupt Moderation");
350 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
351 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
352 OID_AUTO, "flow_control", CTLTYPE_INT|CTLFLAG_RW,
353 adapter, 0, igb_set_flowcntl, "I", "Flow Control");
356 callout_init_mp(&sc->timer);
358 sc->dev = sc->osdep.dev = dev;
361 * Determine hardware and mac type
363 sc->hw.vendor_id = pci_get_vendor(dev);
364 sc->hw.device_id = pci_get_device(dev);
365 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
366 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
367 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
369 if (e1000_set_mac_type(&sc->hw))
372 /* Are we a VF device? */
373 if (sc->hw.mac.type == e1000_vfadapt ||
374 sc->hw.mac.type == e1000_vfadapt_i350)
380 * Configure total supported RX/TX ring count
382 switch (sc->hw.mac.type) {
384 ring_max = IGB_MAX_RING_82575;
387 ring_max = IGB_MAX_RING_82580;
390 ring_max = IGB_MAX_RING_I350;
393 ring_max = IGB_MAX_RING_82576;
396 ring_max = IGB_MIN_RING;
399 sc->rx_ring_cnt = device_getenv_int(dev, "rxr", igb_rxr);
400 sc->rx_ring_cnt = if_ring_count2(sc->rx_ring_cnt, ring_max);
402 sc->rx_ring_cnt = device_getenv_int(dev, "rxr_debug", sc->rx_ring_cnt);
404 sc->rx_ring_inuse = sc->rx_ring_cnt;
405 sc->tx_ring_cnt = 1; /* XXX */
407 /* Enable bus mastering */
408 pci_enable_busmaster(dev);
413 sc->mem_rid = PCIR_BAR(0);
414 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
416 if (sc->mem_res == NULL) {
417 device_printf(dev, "Unable to allocate bus resource: memory\n");
421 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
422 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
424 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
426 /* Save PCI command register for Shared Code */
427 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
428 sc->hw.back = &sc->osdep;
430 sc->intr_rate = IGB_INTR_RATE;
432 /* Do Shared Code initialization */
433 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
434 device_printf(dev, "Setup of Shared code failed\n");
439 e1000_get_bus_info(&sc->hw);
441 sc->hw.mac.autoneg = DO_AUTO_NEG;
442 sc->hw.phy.autoneg_wait_to_complete = FALSE;
443 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
446 if (sc->hw.phy.media_type == e1000_media_type_copper) {
447 sc->hw.phy.mdix = AUTO_ALL_MODES;
448 sc->hw.phy.disable_polarity_correction = FALSE;
449 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
452 /* Set the frame limits assuming standard ethernet sized frames. */
453 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
455 /* Allocate RX/TX rings */
456 error = igb_alloc_rings(sc);
460 /* Allocate interrupt */
461 error = igb_alloc_intr(sc);
468 lwkt_serialize_init(&sc->main_serialize);
470 sc->serializes[i++] = &sc->main_serialize;
472 sc->tx_serialize = i;
473 for (j = 0; j < sc->tx_ring_cnt; ++j)
474 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
476 sc->rx_serialize = i;
477 for (j = 0; j < sc->rx_ring_cnt; ++j)
478 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
480 sc->serialize_cnt = i;
481 KKASSERT(sc->serialize_cnt <= IGB_NSERIALIZE);
483 /* Allocate the appropriate stats memory */
485 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
487 igb_vf_init_stats(sc);
489 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
493 /* Allocate multicast array memory. */
494 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
497 /* Some adapter-specific advanced features */
498 if (sc->hw.mac.type >= e1000_i350) {
500 igb_set_sysctl_value(adapter, "dma_coalesce",
501 "configure dma coalesce",
502 &adapter->dma_coalesce, igb_dma_coalesce);
503 igb_set_sysctl_value(adapter, "eee_disabled",
504 "enable Energy Efficient Ethernet",
505 &adapter->hw.dev_spec._82575.eee_disable,
508 sc->dma_coalesce = igb_dma_coalesce;
509 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
511 e1000_set_eee_i350(&sc->hw);
515 * Start from a known state, this is important in reading the nvm and
518 e1000_reset_hw(&sc->hw);
520 /* Make sure we have a good EEPROM before we read from it */
521 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
523 * Some PCI-E parts fail the first check due to
524 * the link being in sleep state, call it again,
525 * if it fails a second time its a real issue.
527 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
529 "The EEPROM Checksum Is Not Valid\n");
535 /* Copy the permanent MAC address out of the EEPROM */
536 if (e1000_read_mac_addr(&sc->hw) < 0) {
537 device_printf(dev, "EEPROM read error while reading MAC"
542 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
543 device_printf(dev, "Invalid MAC address\n");
550 ** Configure Interrupts
552 if ((adapter->msix > 1) && (igb_enable_msix))
553 error = igb_allocate_msix(adapter);
554 else /* MSI or Legacy */
555 error = igb_allocate_legacy(adapter);
560 /* Setup OS specific network interface */
563 /* Add sysctl tree, must after igb_setup_ifp() */
566 /* Now get a good starting state */
569 /* Initialize statistics */
570 igb_update_stats_counters(sc);
572 sc->hw.mac.get_link_status = 1;
573 igb_update_link_status(sc);
575 /* Indicate SOL/IDER usage */
576 if (e1000_check_reset_block(&sc->hw)) {
578 "PHY reset is blocked due to SOL/IDER session.\n");
581 /* Determine if we have to control management hardware */
582 if (e1000_enable_mng_pass_thru(&sc->hw))
583 sc->flags |= IGB_FLAG_HAS_MGMT;
588 /* APME bit in EEPROM is mapped to WUC.APME */
589 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
591 sc->wol = E1000_WUFC_MAG;
592 /* XXX disable WOL */
596 /* Register for VLAN events */
597 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
598 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
599 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
600 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
604 igb_add_hw_stats(adapter);
607 error = igb_setup_intr(sc);
609 ether_ifdetach(&sc->arpcom.ac_if);
620 igb_detach(device_t dev)
622 struct igb_softc *sc = device_get_softc(dev);
624 if (device_is_attached(dev)) {
625 struct ifnet *ifp = &sc->arpcom.ac_if;
627 ifnet_serialize_all(ifp);
631 e1000_phy_hw_reset(&sc->hw);
633 /* Give control back to firmware */
635 igb_rel_hw_control(sc);
638 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
639 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
643 bus_teardown_intr(dev, sc->intr_res, sc->intr_tag);
645 ifnet_deserialize_all(ifp);
648 } else if (sc->mem_res != NULL) {
649 igb_rel_hw_control(sc);
651 bus_generic_detach(dev);
655 if (sc->mem_res != NULL) {
656 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
663 kfree(sc->mta, M_DEVBUF);
664 if (sc->stats != NULL)
665 kfree(sc->stats, M_DEVBUF);
667 if (sc->sysctl_tree != NULL)
668 sysctl_ctx_free(&sc->sysctl_ctx);
674 igb_shutdown(device_t dev)
676 return igb_suspend(dev);
680 igb_suspend(device_t dev)
682 struct igb_softc *sc = device_get_softc(dev);
683 struct ifnet *ifp = &sc->arpcom.ac_if;
685 ifnet_serialize_all(ifp);
690 igb_rel_hw_control(sc);
693 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
694 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
698 ifnet_deserialize_all(ifp);
700 return bus_generic_suspend(dev);
704 igb_resume(device_t dev)
706 struct igb_softc *sc = device_get_softc(dev);
707 struct ifnet *ifp = &sc->arpcom.ac_if;
709 ifnet_serialize_all(ifp);
716 ifnet_deserialize_all(ifp);
718 return bus_generic_resume(dev);
722 igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
724 struct igb_softc *sc = ifp->if_softc;
725 struct ifreq *ifr = (struct ifreq *)data;
726 int max_frame_size, mask, reinit;
729 ASSERT_IFNET_SERIALIZED_ALL(ifp);
733 max_frame_size = 9234;
734 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
740 ifp->if_mtu = ifr->ifr_mtu;
741 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
744 if (ifp->if_flags & IFF_RUNNING)
749 if (ifp->if_flags & IFF_UP) {
750 if (ifp->if_flags & IFF_RUNNING) {
751 if ((ifp->if_flags ^ sc->if_flags) &
752 (IFF_PROMISC | IFF_ALLMULTI)) {
753 igb_disable_promisc(sc);
759 } else if (ifp->if_flags & IFF_RUNNING) {
762 sc->if_flags = ifp->if_flags;
767 if (ifp->if_flags & IFF_RUNNING) {
768 igb_disable_intr(sc);
770 #ifdef DEVICE_POLLING
771 if (!(ifp->if_flags & IFF_POLLING))
779 * As the speed/duplex settings are being
780 * changed, we need toreset the PHY.
782 sc->hw.phy.reset_disable = FALSE;
784 /* Check SOL/IDER usage */
785 if (e1000_check_reset_block(&sc->hw)) {
786 if_printf(ifp, "Media change is "
787 "blocked due to SOL/IDER session.\n");
793 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
798 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
799 if (mask & IFCAP_HWCSUM) {
800 ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
803 if (mask & IFCAP_VLAN_HWTAGGING) {
804 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
807 if (mask & IFCAP_RSS)
808 ifp->if_capenable ^= IFCAP_RSS;
809 if (reinit && (ifp->if_flags & IFF_RUNNING))
814 error = ether_ioctl(ifp, command, data);
823 struct igb_softc *sc = xsc;
824 struct ifnet *ifp = &sc->arpcom.ac_if;
827 ASSERT_IFNET_SERIALIZED_ALL(ifp);
831 /* Get the latest mac address, User can use a LAA */
832 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
834 /* Put the address into the Receive Address Array */
835 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
838 igb_update_link_status(sc);
840 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
842 /* Set hardware offload abilities */
843 if (ifp->if_capenable & IFCAP_TXCSUM)
844 ifp->if_hwassist = IGB_CSUM_FEATURES;
846 ifp->if_hwassist = 0;
848 /* Configure for OS presence */
851 if (IGB_ENABLE_HWRSS(sc)) {
852 if (sc->intr_type != PCI_INTR_TYPE_MSIX
853 #ifdef DEVICE_POLLING
854 || (ifp->if_flags & IFF_POLLING)
857 sc->rx_ring_inuse = IGB_MIN_RING_RSS;
859 if_printf(ifp, "RX rings %d/%d\n",
860 sc->rx_ring_inuse, sc->rx_ring_cnt);
865 /* Prepare transmit descriptors and buffers */
866 for (i = 0; i < sc->tx_ring_cnt; ++i)
867 igb_init_tx_ring(&sc->tx_rings[i]);
868 igb_init_tx_unit(sc);
870 /* Setup Multicast table */
875 * Figure out the desired mbuf pool
876 * for doing jumbo/packetsplit
878 if (adapter->max_frame_size <= 2048)
879 adapter->rx_mbuf_sz = MCLBYTES;
880 else if (adapter->max_frame_size <= 4096)
881 adapter->rx_mbuf_sz = MJUMPAGESIZE;
883 adapter->rx_mbuf_sz = MJUM9BYTES;
886 /* Initialize interrupt */
889 /* Prepare receive descriptors and buffers */
890 for (i = 0; i < sc->rx_ring_inuse; ++i) {
893 error = igb_init_rx_ring(&sc->rx_rings[i]);
895 if_printf(ifp, "Could not setup receive structures\n");
900 igb_init_rx_unit(sc);
902 /* Enable VLAN support */
903 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
906 /* Don't lose promiscuous settings */
909 ifp->if_flags |= IFF_RUNNING;
910 ifp->if_flags &= ~IFF_OACTIVE;
912 callout_reset(&sc->timer, hz, igb_timer, sc);
913 e1000_clear_hw_cntrs_base_generic(&sc->hw);
916 if (adapter->msix > 1) /* Set up queue routing */
917 igb_configure_queues(adapter);
920 /* this clears any pending interrupts */
921 E1000_READ_REG(&sc->hw, E1000_ICR);
922 #ifdef DEVICE_POLLING
924 * Only enable interrupts if we are not polling, make sure
925 * they are off otherwise.
927 if (ifp->if_flags & IFF_POLLING)
928 igb_disable_intr(sc);
930 #endif /* DEVICE_POLLING */
933 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
936 /* Set Energy Efficient Ethernet */
937 e1000_set_eee_i350(&sc->hw);
939 /* Don't reset the phy next time init gets called */
940 sc->hw.phy.reset_disable = TRUE;
944 igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
946 struct igb_softc *sc = ifp->if_softc;
947 u_char fiber_type = IFM_1000_SX;
949 ASSERT_IFNET_SERIALIZED_ALL(ifp);
951 igb_update_link_status(sc);
953 ifmr->ifm_status = IFM_AVALID;
954 ifmr->ifm_active = IFM_ETHER;
956 if (!sc->link_active)
959 ifmr->ifm_status |= IFM_ACTIVE;
961 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
962 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
963 ifmr->ifm_active |= fiber_type | IFM_FDX;
965 switch (sc->link_speed) {
967 ifmr->ifm_active |= IFM_10_T;
971 ifmr->ifm_active |= IFM_100_TX;
975 ifmr->ifm_active |= IFM_1000_T;
978 if (sc->link_duplex == FULL_DUPLEX)
979 ifmr->ifm_active |= IFM_FDX;
981 ifmr->ifm_active |= IFM_HDX;
986 igb_media_change(struct ifnet *ifp)
988 struct igb_softc *sc = ifp->if_softc;
989 struct ifmedia *ifm = &sc->media;
991 ASSERT_IFNET_SERIALIZED_ALL(ifp);
993 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
996 switch (IFM_SUBTYPE(ifm->ifm_media)) {
998 sc->hw.mac.autoneg = DO_AUTO_NEG;
999 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1005 sc->hw.mac.autoneg = DO_AUTO_NEG;
1006 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1010 sc->hw.mac.autoneg = FALSE;
1011 sc->hw.phy.autoneg_advertised = 0;
1012 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1013 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1015 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1019 sc->hw.mac.autoneg = FALSE;
1020 sc->hw.phy.autoneg_advertised = 0;
1021 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1022 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1024 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1028 if_printf(ifp, "Unsupported media type\n");
1038 igb_set_promisc(struct igb_softc *sc)
1040 struct ifnet *ifp = &sc->arpcom.ac_if;
1041 struct e1000_hw *hw = &sc->hw;
1045 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1049 reg = E1000_READ_REG(hw, E1000_RCTL);
1050 if (ifp->if_flags & IFF_PROMISC) {
1051 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1052 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1053 } else if (ifp->if_flags & IFF_ALLMULTI) {
1054 reg |= E1000_RCTL_MPE;
1055 reg &= ~E1000_RCTL_UPE;
1056 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1061 igb_disable_promisc(struct igb_softc *sc)
1063 struct e1000_hw *hw = &sc->hw;
1067 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1070 reg = E1000_READ_REG(hw, E1000_RCTL);
1071 reg &= ~E1000_RCTL_UPE;
1072 reg &= ~E1000_RCTL_MPE;
1073 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1077 igb_set_multi(struct igb_softc *sc)
1079 struct ifnet *ifp = &sc->arpcom.ac_if;
1080 struct ifmultiaddr *ifma;
1081 uint32_t reg_rctl = 0;
1086 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1088 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1089 if (ifma->ifma_addr->sa_family != AF_LINK)
1092 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1095 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1096 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1100 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1101 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1102 reg_rctl |= E1000_RCTL_MPE;
1103 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1105 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1110 igb_timer(void *xsc)
1112 struct igb_softc *sc = xsc;
1114 lwkt_serialize_enter(&sc->main_serialize);
1116 igb_update_link_status(sc);
1117 igb_update_stats_counters(sc);
1119 callout_reset(&sc->timer, hz, igb_timer, sc);
1121 lwkt_serialize_exit(&sc->main_serialize);
1125 igb_update_link_status(struct igb_softc *sc)
1127 struct ifnet *ifp = &sc->arpcom.ac_if;
1128 struct e1000_hw *hw = &sc->hw;
1129 uint32_t link_check, thstat, ctrl;
1131 link_check = thstat = ctrl = 0;
1133 /* Get the cached link value or read for real */
1134 switch (hw->phy.media_type) {
1135 case e1000_media_type_copper:
1136 if (hw->mac.get_link_status) {
1137 /* Do the work to read phy */
1138 e1000_check_for_link(hw);
1139 link_check = !hw->mac.get_link_status;
1145 case e1000_media_type_fiber:
1146 e1000_check_for_link(hw);
1147 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1150 case e1000_media_type_internal_serdes:
1151 e1000_check_for_link(hw);
1152 link_check = hw->mac.serdes_has_link;
1155 /* VF device is type_unknown */
1156 case e1000_media_type_unknown:
1157 e1000_check_for_link(hw);
1158 link_check = !hw->mac.get_link_status;
1164 /* Check for thermal downshift or shutdown */
1165 if (hw->mac.type == e1000_i350) {
1166 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1167 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1170 /* Now we check if a transition has happened */
1171 if (link_check && sc->link_active == 0) {
1172 e1000_get_speed_and_duplex(hw,
1173 &sc->link_speed, &sc->link_duplex);
1175 if_printf(ifp, "Link is up %d Mbps %s\n",
1177 sc->link_duplex == FULL_DUPLEX ?
1178 "Full Duplex" : "Half Duplex");
1180 sc->link_active = 1;
1182 ifp->if_baudrate = sc->link_speed * 1000000;
1183 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1184 (thstat & E1000_THSTAT_LINK_THROTTLE))
1185 if_printf(ifp, "Link: thermal downshift\n");
1186 /* This can sleep */
1187 ifp->if_link_state = LINK_STATE_UP;
1188 if_link_state_change(ifp);
1189 } else if (!link_check && sc->link_active == 1) {
1190 ifp->if_baudrate = sc->link_speed = 0;
1191 sc->link_duplex = 0;
1193 if_printf(ifp, "Link is Down\n");
1194 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1195 (thstat & E1000_THSTAT_PWR_DOWN))
1196 if_printf(ifp, "Link: thermal shutdown\n");
1197 sc->link_active = 0;
1198 /* This can sleep */
1199 ifp->if_link_state = LINK_STATE_DOWN;
1200 if_link_state_change(ifp);
1205 igb_stop(struct igb_softc *sc)
1207 struct ifnet *ifp = &sc->arpcom.ac_if;
1210 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1212 igb_disable_intr(sc);
1214 callout_stop(&sc->timer);
1216 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1219 e1000_reset_hw(&sc->hw);
1220 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1222 e1000_led_off(&sc->hw);
1223 e1000_cleanup_led(&sc->hw);
1225 for (i = 0; i < sc->tx_ring_cnt; ++i)
1226 igb_free_tx_ring(&sc->tx_rings[i]);
1227 for (i = 0; i < sc->rx_ring_cnt; ++i)
1228 igb_free_rx_ring(&sc->rx_rings[i]);
1232 igb_reset(struct igb_softc *sc)
1234 struct ifnet *ifp = &sc->arpcom.ac_if;
1235 struct e1000_hw *hw = &sc->hw;
1236 struct e1000_fc_info *fc = &hw->fc;
1240 /* Let the firmware know the OS is in control */
1241 igb_get_hw_control(sc);
1244 * Packet Buffer Allocation (PBA)
1245 * Writing PBA sets the receive portion of the buffer
1246 * the remainder is used for the transmit buffer.
1248 switch (hw->mac.type) {
1250 pba = E1000_PBA_32K;
1255 pba = E1000_READ_REG(hw, E1000_RXPBS);
1256 pba &= E1000_RXPBS_SIZE_MASK_82576;
1261 case e1000_vfadapt_i350:
1262 pba = E1000_READ_REG(hw, E1000_RXPBS);
1263 pba = e1000_rxpbs_adjust_82580(pba);
1265 /* XXX pba = E1000_PBA_35K; */
1271 /* Special needs in case of Jumbo frames */
1272 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1273 uint32_t tx_space, min_tx, min_rx;
1275 pba = E1000_READ_REG(hw, E1000_PBA);
1276 tx_space = pba >> 16;
1279 min_tx = (sc->max_frame_size +
1280 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1281 min_tx = roundup2(min_tx, 1024);
1283 min_rx = sc->max_frame_size;
1284 min_rx = roundup2(min_rx, 1024);
1286 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1287 pba = pba - (min_tx - tx_space);
1289 * if short on rx space, rx wins
1290 * and must trump tx adjustment
1295 E1000_WRITE_REG(hw, E1000_PBA, pba);
1299 * These parameters control the automatic generation (Tx) and
1300 * response (Rx) to Ethernet PAUSE frames.
1301 * - High water mark should allow for at least two frames to be
1302 * received after sending an XOFF.
1303 * - Low water mark works best when it is very near the high water mark.
1304 * This allows the receiver to restart by sending XON when it has
1307 hwm = min(((pba << 10) * 9 / 10),
1308 ((pba << 10) - 2 * sc->max_frame_size));
1310 if (hw->mac.type < e1000_82576) {
1311 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1312 fc->low_water = fc->high_water - 8;
1314 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1315 fc->low_water = fc->high_water - 16;
1317 fc->pause_time = IGB_FC_PAUSE_TIME;
1318 fc->send_xon = TRUE;
1320 /* Issue a global reset */
1322 E1000_WRITE_REG(hw, E1000_WUC, 0);
1324 if (e1000_init_hw(hw) < 0)
1325 if_printf(ifp, "Hardware Initialization Failed\n");
1327 /* Setup DMA Coalescing */
1328 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1331 hwm = (pba - 4) << 10;
1332 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1333 & E1000_DMACR_DMACTHR_MASK;
1335 /* transition to L0x or L1 if available..*/
1336 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1338 /* timer = +-1000 usec in 32usec intervals */
1340 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1342 /* No lower threshold */
1343 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1345 /* set hwm to PBA - 2 * max frame size */
1346 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1348 /* Set the interval before transition */
1349 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1350 reg |= 0x800000FF; /* 255 usec */
1351 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1353 /* free space in tx packet buffer to wake from DMA coal */
1354 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1355 (20480 - (2 * sc->max_frame_size)) >> 6);
1357 /* make low power state decision controlled by DMA coal */
1358 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1359 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1360 reg | E1000_PCIEMISC_LX_DECISION);
1361 if_printf(ifp, "DMA Coalescing enabled\n");
1364 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1365 e1000_get_phy_info(hw);
1366 e1000_check_for_link(hw);
1370 igb_setup_ifp(struct igb_softc *sc)
1372 struct ifnet *ifp = &sc->arpcom.ac_if;
1374 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
1376 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1377 ifp->if_init = igb_init;
1378 ifp->if_ioctl = igb_ioctl;
1379 ifp->if_start = igb_start;
1380 ifp->if_serialize = igb_serialize;
1381 ifp->if_deserialize = igb_deserialize;
1382 ifp->if_tryserialize = igb_tryserialize;
1384 ifp->if_serialize_assert = igb_serialize_assert;
1386 #ifdef DEVICE_POLLING
1387 ifp->if_poll = igb_poll;
1389 ifp->if_watchdog = igb_watchdog;
1391 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1392 ifq_set_ready(&ifp->if_snd);
1394 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1396 ifp->if_capabilities =
1397 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1398 if (IGB_ENABLE_HWRSS(sc))
1399 ifp->if_capabilities |= IFCAP_RSS;
1400 ifp->if_capenable = ifp->if_capabilities;
1401 ifp->if_hwassist = IGB_CSUM_FEATURES;
1404 * Tell the upper layer(s) we support long frames
1406 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1409 * Specify the media types supported by this adapter and register
1410 * callbacks to update media and link information
1412 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1413 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1414 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1415 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1417 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1419 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1420 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1422 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1423 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1425 if (sc->hw.phy.type != e1000_phy_ife) {
1426 ifmedia_add(&sc->media,
1427 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1428 ifmedia_add(&sc->media,
1429 IFM_ETHER | IFM_1000_T, 0, NULL);
1432 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1433 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1437 igb_add_sysctl(struct igb_softc *sc)
1439 #ifdef IGB_RSS_DEBUG
1444 sysctl_ctx_init(&sc->sysctl_ctx);
1445 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1446 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1447 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1448 if (sc->sysctl_tree == NULL) {
1449 device_printf(sc->dev, "can't add sysctl node\n");
1453 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1454 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1455 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1456 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1457 "# of RX rings used");
1458 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1459 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1461 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1462 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1465 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1466 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1467 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1469 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1470 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1471 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
1472 "# of segments per TX interrupt");
1474 #ifdef IGB_RSS_DEBUG
1475 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1476 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1478 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1479 ksnprintf(rx_pkt, sizeof(rx_pkt), "rx%d_pkt", i);
1480 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1481 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, rx_pkt,
1482 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1488 igb_alloc_rings(struct igb_softc *sc)
1493 * Create top level busdma tag
1495 error = bus_dma_tag_create(NULL, 1, 0,
1496 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1497 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1500 device_printf(sc->dev, "could not create top level DMA tag\n");
1505 * Allocate TX descriptor rings and buffers
1507 sc->tx_rings = kmalloc(sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1508 M_DEVBUF, M_WAITOK | M_ZERO);
1509 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1510 struct igb_tx_ring *txr = &sc->tx_rings[i];
1512 /* Set up some basics */
1515 lwkt_serialize_init(&txr->tx_serialize);
1517 error = igb_create_tx_ring(txr);
1523 * Allocate RX descriptor rings and buffers
1525 sc->rx_rings = kmalloc(sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1526 M_DEVBUF, M_WAITOK | M_ZERO);
1527 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1528 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1530 /* Set up some basics */
1533 lwkt_serialize_init(&rxr->rx_serialize);
1535 error = igb_create_rx_ring(rxr);
1544 igb_free_rings(struct igb_softc *sc)
1548 if (sc->tx_rings != NULL) {
1549 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1550 struct igb_tx_ring *txr = &sc->tx_rings[i];
1552 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1554 kfree(sc->tx_rings, M_DEVBUF);
1557 if (sc->rx_rings != NULL) {
1558 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1559 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1561 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1563 kfree(sc->rx_rings, M_DEVBUF);
1568 igb_create_tx_ring(struct igb_tx_ring *txr)
1570 int tsize, error, i;
1573 * Validate number of transmit descriptors. It must not exceed
1574 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1576 if (((igb_txd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN) != 0 ||
1577 (igb_txd > IGB_MAX_TXD) || (igb_txd < IGB_MIN_TXD)) {
1578 device_printf(txr->sc->dev,
1579 "Using %d TX descriptors instead of %d!\n",
1580 IGB_DEFAULT_TXD, igb_txd);
1581 txr->num_tx_desc = IGB_DEFAULT_TXD;
1583 txr->num_tx_desc = igb_txd;
1587 * Allocate TX descriptor ring
1589 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1591 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1592 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1593 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1594 if (txr->txdma.dma_vaddr == NULL) {
1595 device_printf(txr->sc->dev,
1596 "Unable to allocate TX Descriptor memory\n");
1599 txr->tx_base = txr->txdma.dma_vaddr;
1600 bzero(txr->tx_base, tsize);
1602 txr->tx_buf = kmalloc(sizeof(struct igb_tx_buf) * txr->num_tx_desc,
1603 M_DEVBUF, M_WAITOK | M_ZERO);
1606 * Allocate TX head write-back buffer
1608 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1609 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1610 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1611 if (txr->tx_hdr == NULL) {
1612 device_printf(txr->sc->dev,
1613 "Unable to allocate TX head write-back buffer\n");
1618 * Create DMA tag for TX buffers
1620 error = bus_dma_tag_create(txr->sc->parent_tag,
1621 1, 0, /* alignment, bounds */
1622 BUS_SPACE_MAXADDR, /* lowaddr */
1623 BUS_SPACE_MAXADDR, /* highaddr */
1624 NULL, NULL, /* filter, filterarg */
1625 IGB_TSO_SIZE, /* maxsize */
1626 IGB_MAX_SCATTER, /* nsegments */
1627 PAGE_SIZE, /* maxsegsize */
1628 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1629 BUS_DMA_ONEBPAGE, /* flags */
1632 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1633 kfree(txr->tx_buf, M_DEVBUF);
1639 * Create DMA maps for TX buffers
1641 for (i = 0; i < txr->num_tx_desc; ++i) {
1642 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1644 error = bus_dmamap_create(txr->tx_tag,
1645 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1647 device_printf(txr->sc->dev,
1648 "Unable to create TX DMA map\n");
1649 igb_destroy_tx_ring(txr, i);
1655 * Initialize various watermark
1657 txr->spare_desc = IGB_TX_SPARE;
1658 txr->intr_nsegs = txr->num_tx_desc / 16;
1659 txr->oact_hi_desc = txr->num_tx_desc / 2;
1660 txr->oact_lo_desc = txr->num_tx_desc / 8;
1661 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1662 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1663 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1664 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1670 igb_free_tx_ring(struct igb_tx_ring *txr)
1674 for (i = 0; i < txr->num_tx_desc; ++i) {
1675 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1677 if (txbuf->m_head != NULL) {
1678 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1679 m_freem(txbuf->m_head);
1680 txbuf->m_head = NULL;
1686 igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1690 if (txr->txdma.dma_vaddr != NULL) {
1691 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1692 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1693 txr->txdma.dma_map);
1694 bus_dma_tag_destroy(txr->txdma.dma_tag);
1695 txr->txdma.dma_vaddr = NULL;
1698 if (txr->tx_hdr != NULL) {
1699 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1700 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1702 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1706 if (txr->tx_buf == NULL)
1709 for (i = 0; i < ndesc; ++i) {
1710 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1712 KKASSERT(txbuf->m_head == NULL);
1713 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1715 bus_dma_tag_destroy(txr->tx_tag);
1717 kfree(txr->tx_buf, M_DEVBUF);
1722 igb_init_tx_ring(struct igb_tx_ring *txr)
1724 /* Clear the old descriptor contents */
1726 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1728 /* Clear TX head write-back buffer */
1732 txr->next_avail_desc = 0;
1733 txr->next_to_clean = 0;
1736 /* Set number of descriptors available */
1737 txr->tx_avail = txr->num_tx_desc;
1741 igb_init_tx_unit(struct igb_softc *sc)
1743 struct e1000_hw *hw = &sc->hw;
1747 /* Setup the Tx Descriptor Rings */
1748 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1749 struct igb_tx_ring *txr = &sc->tx_rings[i];
1750 uint64_t bus_addr = txr->txdma.dma_paddr;
1751 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1752 uint32_t txdctl = 0;
1753 uint32_t dca_txctrl;
1755 E1000_WRITE_REG(hw, E1000_TDLEN(i),
1756 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1757 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1758 (uint32_t)(bus_addr >> 32));
1759 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1760 (uint32_t)bus_addr);
1762 /* Setup the HW Tx Head and Tail descriptor pointers */
1763 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1764 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1766 txdctl |= IGB_TX_PTHRESH;
1767 txdctl |= IGB_TX_HTHRESH << 8;
1768 txdctl |= IGB_TX_WTHRESH << 16;
1769 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1770 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
1772 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1773 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1774 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1776 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
1777 (uint32_t)(hdr_paddr >> 32));
1778 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
1779 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1785 e1000_config_collision_dist(hw);
1787 /* Program the Transmit Control Register */
1788 tctl = E1000_READ_REG(hw, E1000_TCTL);
1789 tctl &= ~E1000_TCTL_CT;
1790 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1791 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1793 /* This write will effectively turn on the transmit unit. */
1794 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1798 igb_txctx(struct igb_tx_ring *txr, struct mbuf *mp)
1800 struct e1000_adv_tx_context_desc *TXD;
1801 struct igb_tx_buf *txbuf;
1802 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1803 struct ether_vlan_header *eh;
1804 struct ip *ip = NULL;
1805 int ehdrlen, ctxd, ip_hlen = 0;
1806 uint16_t etype, vlantag = 0;
1807 boolean_t offload = TRUE;
1809 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1812 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
1813 ctxd = txr->next_avail_desc;
1814 txbuf = &txr->tx_buf[ctxd];
1815 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1818 * In advanced descriptors the vlan tag must
1819 * be placed into the context descriptor, thus
1820 * we need to be here just for that setup.
1822 if (mp->m_flags & M_VLANTAG) {
1823 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1824 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1825 } else if (!offload) {
1830 * Determine where frame payload starts.
1831 * Jump over vlan headers if already present,
1832 * helpful for QinQ too.
1834 KASSERT(mp->m_len >= ETHER_HDR_LEN,
1835 ("igb_txctx_pullup is not called (eh)?\n"));
1836 eh = mtod(mp, struct ether_vlan_header *);
1837 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
1838 KASSERT(mp->m_len >= ETHER_HDR_LEN + EVL_ENCAPLEN,
1839 ("igb_txctx_pullup is not called (evh)?\n"));
1840 etype = ntohs(eh->evl_proto);
1841 ehdrlen = ETHER_HDR_LEN + EVL_ENCAPLEN;
1843 etype = ntohs(eh->evl_encap_proto);
1844 ehdrlen = ETHER_HDR_LEN;
1847 /* Set the ether header length */
1848 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
1852 KASSERT(mp->m_len >= ehdrlen + IGB_IPVHL_SIZE,
1853 ("igb_txctx_pullup is not called (eh+ip_vhl)?\n"));
1855 /* NOTE: We could only safely access ip.ip_vhl part */
1856 ip = (struct ip *)(mp->m_data + ehdrlen);
1857 ip_hlen = ip->ip_hl << 2;
1859 if (mp->m_pkthdr.csum_flags & CSUM_IP)
1860 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1864 case ETHERTYPE_IPV6:
1865 ip6 = (struct ip6_hdr *)(mp->m_data + ehdrlen);
1866 ip_hlen = sizeof(struct ip6_hdr);
1867 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV6;
1876 vlan_macip_lens |= ip_hlen;
1877 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1879 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1880 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1881 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1882 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1884 /* 82575 needs the queue index added */
1885 if (txr->sc->hw.mac.type == e1000_82575)
1886 mss_l4len_idx = txr->me << 4;
1888 /* Now copy bits into descriptor */
1889 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
1890 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
1891 TXD->seqnum_seed = htole32(0);
1892 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
1894 txbuf->m_head = NULL;
1896 /* We've consumed the first desc, adjust counters */
1897 if (++ctxd == txr->num_tx_desc)
1899 txr->next_avail_desc = ctxd;
1906 igb_txeof(struct igb_tx_ring *txr)
1908 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
1909 int first, hdr, avail;
1911 if (txr->tx_avail == txr->num_tx_desc)
1914 first = txr->next_to_clean;
1915 hdr = *(txr->tx_hdr);
1920 avail = txr->tx_avail;
1921 while (first != hdr) {
1922 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
1925 if (txbuf->m_head) {
1926 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1927 m_freem(txbuf->m_head);
1928 txbuf->m_head = NULL;
1931 if (++first == txr->num_tx_desc)
1934 txr->next_to_clean = first;
1935 txr->tx_avail = avail;
1938 * If we have a minimum free, clear IFF_OACTIVE
1939 * to tell the stack that it is OK to send packets.
1941 if (IGB_IS_NOT_OACTIVE(txr)) {
1942 ifp->if_flags &= ~IFF_OACTIVE;
1945 * We have enough TX descriptors, turn off
1946 * the watchdog. We allow small amount of
1947 * packets (roughly intr_nsegs) pending on
1948 * the transmit ring.
1955 igb_create_rx_ring(struct igb_rx_ring *rxr)
1957 int rsize, i, error;
1960 * Validate number of receive descriptors. It must not exceed
1961 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1963 if (((igb_rxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN) != 0 ||
1964 (igb_rxd > IGB_MAX_RXD) || (igb_rxd < IGB_MIN_RXD)) {
1965 device_printf(rxr->sc->dev,
1966 "Using %d RX descriptors instead of %d!\n",
1967 IGB_DEFAULT_RXD, igb_rxd);
1968 rxr->num_rx_desc = IGB_DEFAULT_RXD;
1970 rxr->num_rx_desc = igb_rxd;
1974 * Allocate RX descriptor ring
1976 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
1978 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
1979 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
1980 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
1981 &rxr->rxdma.dma_paddr);
1982 if (rxr->rxdma.dma_vaddr == NULL) {
1983 device_printf(rxr->sc->dev,
1984 "Unable to allocate RxDescriptor memory\n");
1987 rxr->rx_base = rxr->rxdma.dma_vaddr;
1988 bzero(rxr->rx_base, rsize);
1990 rxr->rx_buf = kmalloc(sizeof(struct igb_rx_buf) * rxr->num_rx_desc,
1991 M_DEVBUF, M_WAITOK | M_ZERO);
1994 * Create DMA tag for RX buffers
1996 error = bus_dma_tag_create(rxr->sc->parent_tag,
1997 1, 0, /* alignment, bounds */
1998 BUS_SPACE_MAXADDR, /* lowaddr */
1999 BUS_SPACE_MAXADDR, /* highaddr */
2000 NULL, NULL, /* filter, filterarg */
2001 MCLBYTES, /* maxsize */
2003 MCLBYTES, /* maxsegsize */
2004 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2007 device_printf(rxr->sc->dev,
2008 "Unable to create RX payload DMA tag\n");
2009 kfree(rxr->rx_buf, M_DEVBUF);
2015 * Create spare DMA map for RX buffers
2017 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2020 device_printf(rxr->sc->dev,
2021 "Unable to create spare RX DMA maps\n");
2022 bus_dma_tag_destroy(rxr->rx_tag);
2023 kfree(rxr->rx_buf, M_DEVBUF);
2029 * Create DMA maps for RX buffers
2031 for (i = 0; i < rxr->num_rx_desc; i++) {
2032 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2034 error = bus_dmamap_create(rxr->rx_tag,
2035 BUS_DMA_WAITOK, &rxbuf->map);
2037 device_printf(rxr->sc->dev,
2038 "Unable to create RX DMA maps\n");
2039 igb_destroy_rx_ring(rxr, i);
2047 igb_free_rx_ring(struct igb_rx_ring *rxr)
2051 for (i = 0; i < rxr->num_rx_desc; ++i) {
2052 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2054 if (rxbuf->m_head != NULL) {
2055 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2056 m_freem(rxbuf->m_head);
2057 rxbuf->m_head = NULL;
2061 if (rxr->fmp != NULL)
2068 igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2072 if (rxr->rxdma.dma_vaddr != NULL) {
2073 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2074 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2075 rxr->rxdma.dma_map);
2076 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2077 rxr->rxdma.dma_vaddr = NULL;
2080 if (rxr->rx_buf == NULL)
2083 for (i = 0; i < ndesc; ++i) {
2084 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2086 KKASSERT(rxbuf->m_head == NULL);
2087 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2089 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2090 bus_dma_tag_destroy(rxr->rx_tag);
2092 kfree(rxr->rx_buf, M_DEVBUF);
2097 igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2099 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2100 rxd->wb.upper.status_error = 0;
2104 igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2107 bus_dma_segment_t seg;
2109 struct igb_rx_buf *rxbuf;
2112 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2115 if_printf(&rxr->sc->arpcom.ac_if,
2116 "Unable to allocate RX mbuf\n");
2120 m->m_len = m->m_pkthdr.len = MCLBYTES;
2122 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2123 m_adj(m, ETHER_ALIGN);
2125 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2126 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2130 if_printf(&rxr->sc->arpcom.ac_if,
2131 "Unable to load RX mbuf\n");
2136 rxbuf = &rxr->rx_buf[i];
2137 if (rxbuf->m_head != NULL)
2138 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2141 rxbuf->map = rxr->rx_sparemap;
2142 rxr->rx_sparemap = map;
2145 rxbuf->paddr = seg.ds_addr;
2147 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2152 igb_init_rx_ring(struct igb_rx_ring *rxr)
2156 /* Clear the ring contents */
2158 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
2160 /* Now replenish the ring mbufs */
2161 for (i = 0; i < rxr->num_rx_desc; ++i) {
2164 error = igb_newbuf(rxr, i, TRUE);
2169 /* Setup our descriptor indices */
2170 rxr->next_to_check = 0;
2174 rxr->discard = FALSE;
2180 igb_init_rx_unit(struct igb_softc *sc)
2182 struct ifnet *ifp = &sc->arpcom.ac_if;
2183 struct e1000_hw *hw = &sc->hw;
2184 uint32_t rctl, rxcsum, srrctl = 0;
2188 * Make sure receives are disabled while setting
2189 * up the descriptor ring
2191 rctl = E1000_READ_REG(hw, E1000_RCTL);
2192 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2196 ** Set up for header split
2198 if (igb_header_split) {
2199 /* Use a standard mbuf for the header */
2200 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2201 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2204 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2207 ** Set up for jumbo frames
2209 if (ifp->if_mtu > ETHERMTU) {
2210 rctl |= E1000_RCTL_LPE;
2212 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2213 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2214 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2215 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2216 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2217 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2219 /* Set maximum packet len */
2220 psize = adapter->max_frame_size;
2221 /* are we on a vlan? */
2222 if (adapter->ifp->if_vlantrunk != NULL)
2223 psize += VLAN_TAG_SIZE;
2224 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2226 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2227 rctl |= E1000_RCTL_SZ_2048;
2230 rctl &= ~E1000_RCTL_LPE;
2231 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2232 rctl |= E1000_RCTL_SZ_2048;
2235 /* Setup the Base and Length of the Rx Descriptor Rings */
2236 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2237 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2238 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2241 E1000_WRITE_REG(hw, E1000_RDLEN(i),
2242 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
2243 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2244 (uint32_t)(bus_addr >> 32));
2245 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2246 (uint32_t)bus_addr);
2247 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2248 /* Enable this Queue */
2249 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2250 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2251 rxdctl &= 0xFFF00000;
2252 rxdctl |= IGB_RX_PTHRESH;
2253 rxdctl |= IGB_RX_HTHRESH << 8;
2254 rxdctl |= IGB_RX_WTHRESH << 16;
2255 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2258 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2259 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2262 * Receive Checksum Offload for TCP and UDP
2264 * Checksum offloading is also enabled if multiple receive
2265 * queue is to be supported, since we need it to figure out
2268 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2271 * PCSD must be enabled to enable multiple
2274 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2277 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2280 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2282 if (IGB_ENABLE_HWRSS(sc)) {
2283 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
2284 uint32_t reta_shift;
2289 * When we reach here, RSS has already been disabled
2290 * in igb_stop(), so we could safely configure RSS key
2291 * and redirect table.
2297 toeplitz_get_key(key, sizeof(key));
2298 for (i = 0; i < IGB_NRSSRK; ++i) {
2301 rssrk = IGB_RSSRK_VAL(key, i);
2302 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2304 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
2308 * Configure RSS redirect table in following fashion:
2309 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2311 reta_shift = IGB_RETA_SHIFT;
2312 if (hw->mac.type == e1000_82575)
2313 reta_shift = IGB_RETA_SHIFT_82575;
2316 for (j = 0; j < IGB_NRETA; ++j) {
2319 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2322 q = (r % sc->rx_ring_inuse) << reta_shift;
2323 reta |= q << (8 * i);
2326 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2327 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2331 * Enable multiple receive queues.
2332 * Enable IPv4 RSS standard hash functions.
2333 * Disable RSS interrupt on 82575
2335 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2336 E1000_MRQC_ENABLE_RSS_4Q |
2337 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2338 E1000_MRQC_RSS_FIELD_IPV4);
2341 /* Setup the Receive Control Register */
2342 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2343 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2344 E1000_RCTL_RDMTS_HALF |
2345 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2346 /* Strip CRC bytes. */
2347 rctl |= E1000_RCTL_SECRC;
2348 /* Make sure VLAN Filters are off */
2349 rctl &= ~E1000_RCTL_VFE;
2350 /* Don't store bad packets */
2351 rctl &= ~E1000_RCTL_SBP;
2353 /* Enable Receives */
2354 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2357 * Setup the HW Rx Head and Tail Descriptor Pointers
2358 * - needs to be after enable
2360 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2361 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2363 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
2364 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
2369 igb_rxeof(struct igb_rx_ring *rxr, int count)
2371 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2372 union e1000_adv_rx_desc *cur;
2376 i = rxr->next_to_check;
2377 cur = &rxr->rx_base[i];
2378 staterr = le32toh(cur->wb.upper.status_error);
2380 if ((staterr & E1000_RXD_STAT_DD) == 0)
2383 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
2384 struct pktinfo *pi = NULL, pi0;
2385 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2386 struct mbuf *m = NULL;
2389 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2393 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2395 struct mbuf *mp = rxbuf->m_head;
2396 uint32_t hash, hashtype;
2400 len = le16toh(cur->wb.upper.length);
2401 if (rxr->sc->hw.mac.type == e1000_i350 &&
2402 (staterr & E1000_RXDEXT_STATERR_LB))
2403 vlan = be16toh(cur->wb.upper.vlan);
2405 vlan = le16toh(cur->wb.upper.vlan);
2407 hash = le32toh(cur->wb.lower.hi_dword.rss);
2408 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2409 E1000_RXDADV_RSSTYPE_MASK;
2411 IGB_RSS_DPRINTF(rxr->sc, 10,
2412 "ring%d, hash 0x%08x, hashtype %u\n",
2413 rxr->me, hash, hashtype);
2415 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2416 BUS_DMASYNC_POSTREAD);
2418 if (igb_newbuf(rxr, i, FALSE) != 0) {
2424 if (rxr->fmp == NULL) {
2425 mp->m_pkthdr.len = len;
2429 rxr->lmp->m_next = mp;
2430 rxr->lmp = rxr->lmp->m_next;
2431 rxr->fmp->m_pkthdr.len += len;
2439 m->m_pkthdr.rcvif = ifp;
2442 if (ifp->if_capenable & IFCAP_RXCSUM)
2443 igb_rxcsum(staterr, m);
2445 if (staterr & E1000_RXD_STAT_VP) {
2446 m->m_pkthdr.ether_vlantag = vlan;
2447 m->m_flags |= M_VLANTAG;
2450 if (ifp->if_capenable & IFCAP_RSS) {
2451 pi = igb_rssinfo(m, &pi0,
2452 hash, hashtype, staterr);
2454 #ifdef IGB_RSS_DEBUG
2461 igb_setup_rxdesc(cur, rxbuf);
2463 rxr->discard = TRUE;
2465 rxr->discard = FALSE;
2466 if (rxr->fmp != NULL) {
2475 ether_input_pkt(ifp, m, pi);
2477 /* Advance our pointers to the next descriptor. */
2478 if (++i == rxr->num_rx_desc)
2481 cur = &rxr->rx_base[i];
2482 staterr = le32toh(cur->wb.upper.status_error);
2484 rxr->next_to_check = i;
2487 i = rxr->num_rx_desc - 1;
2488 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2493 igb_set_vlan(struct igb_softc *sc)
2495 struct e1000_hw *hw = &sc->hw;
2498 struct ifnet *ifp = sc->arpcom.ac_if;
2502 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2506 reg = E1000_READ_REG(hw, E1000_CTRL);
2507 reg |= E1000_CTRL_VME;
2508 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2511 /* Enable the Filter Table */
2512 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2513 reg = E1000_READ_REG(hw, E1000_RCTL);
2514 reg &= ~E1000_RCTL_CFIEN;
2515 reg |= E1000_RCTL_VFE;
2516 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2520 /* Update the frame size */
2521 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2522 sc->max_frame_size + VLAN_TAG_SIZE);
2525 /* Don't bother with table if no vlans */
2526 if ((adapter->num_vlans == 0) ||
2527 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2530 ** A soft reset zero's out the VFTA, so
2531 ** we need to repopulate it now.
2533 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2534 if (adapter->shadow_vfta[i] != 0) {
2535 if (adapter->vf_ifp)
2536 e1000_vfta_set_vf(hw,
2537 adapter->shadow_vfta[i], TRUE);
2539 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2540 i, adapter->shadow_vfta[i]);
2546 igb_enable_intr(struct igb_softc *sc)
2548 lwkt_serialize_handler_enable(&sc->main_serialize);
2550 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2551 /* XXX MSI-X should use sc->intr_mask */
2552 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2553 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2554 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2555 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2557 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2559 E1000_WRITE_FLUSH(&sc->hw);
2563 igb_disable_intr(struct igb_softc *sc)
2565 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2566 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2567 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2569 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2570 E1000_WRITE_FLUSH(&sc->hw);
2572 lwkt_serialize_handler_disable(&sc->main_serialize);
2576 * Bit of a misnomer, what this really means is
2577 * to enable OS management of the system... aka
2578 * to disable special hardware management features
2581 igb_get_mgmt(struct igb_softc *sc)
2583 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2584 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2585 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2587 /* disable hardware interception of ARP */
2588 manc &= ~E1000_MANC_ARP_EN;
2590 /* enable receiving management packets to the host */
2591 manc |= E1000_MANC_EN_MNG2HOST;
2592 manc2h |= 1 << 5; /* Mng Port 623 */
2593 manc2h |= 1 << 6; /* Mng Port 664 */
2594 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2595 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2600 * Give control back to hardware management controller
2604 igb_rel_mgmt(struct igb_softc *sc)
2606 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2607 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2609 /* Re-enable hardware interception of ARP */
2610 manc |= E1000_MANC_ARP_EN;
2611 manc &= ~E1000_MANC_EN_MNG2HOST;
2613 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2618 * Sets CTRL_EXT:DRV_LOAD bit.
2620 * For ASF and Pass Through versions of f/w this means that
2621 * the driver is loaded.
2624 igb_get_hw_control(struct igb_softc *sc)
2631 /* Let firmware know the driver has taken over */
2632 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2633 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2634 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2638 * Resets CTRL_EXT:DRV_LOAD bit.
2640 * For ASF and Pass Through versions of f/w this means that the
2641 * driver is no longer loaded.
2644 igb_rel_hw_control(struct igb_softc *sc)
2651 /* Let firmware taken over control of h/w */
2652 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2653 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2654 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2658 igb_is_valid_ether_addr(const uint8_t *addr)
2660 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2662 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2668 * Enable PCI Wake On Lan capability
2671 igb_enable_wol(device_t dev)
2673 uint16_t cap, status;
2676 /* First find the capabilities pointer*/
2677 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2679 /* Read the PM Capabilities */
2680 id = pci_read_config(dev, cap, 1);
2681 if (id != PCIY_PMG) /* Something wrong */
2685 * OK, we have the power capabilities,
2686 * so now get the status register
2688 cap += PCIR_POWER_STATUS;
2689 status = pci_read_config(dev, cap, 2);
2690 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2691 pci_write_config(dev, cap, status, 2);
2695 igb_update_stats_counters(struct igb_softc *sc)
2697 struct e1000_hw *hw = &sc->hw;
2698 struct e1000_hw_stats *stats;
2699 struct ifnet *ifp = &sc->arpcom.ac_if;
2702 * The virtual function adapter has only a
2703 * small controlled set of stats, do only
2707 igb_update_vf_stats_counters(sc);
2712 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2713 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2715 E1000_READ_REG(hw,E1000_SYMERRS);
2716 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2719 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2720 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2721 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2722 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2724 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2725 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2726 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2727 stats->dc += E1000_READ_REG(hw, E1000_DC);
2728 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2729 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2730 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2733 * For watchdog management we need to know if we have been
2734 * paused during the last interval, so capture that here.
2736 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2737 stats->xoffrxc += sc->pause_frames;
2738 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2739 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2740 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2741 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2742 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2743 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2744 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2745 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2746 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2747 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2748 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2749 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2751 /* For the 64-bit byte counters the low dword must be read first. */
2752 /* Both registers clear on the read of the high dword */
2754 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2755 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2756 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2757 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2759 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2760 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2761 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2762 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2763 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2765 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2766 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2768 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2769 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2770 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2771 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2772 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2773 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2774 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2775 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2776 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2777 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2779 /* Interrupt Counts */
2781 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2782 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2783 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2784 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2785 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2786 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2787 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2788 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2789 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2791 /* Host to Card Statistics */
2793 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2794 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2795 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2796 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2797 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2798 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2799 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2800 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2801 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2802 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2803 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2804 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2805 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2806 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2808 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2809 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2810 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2811 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2812 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2813 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2815 ifp->if_collisions = stats->colc;
2818 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2819 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2822 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2824 /* Driver specific counters */
2825 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2826 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2827 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2828 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2829 sc->packet_buf_alloc_tx =
2830 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2831 sc->packet_buf_alloc_rx =
2832 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2836 igb_vf_init_stats(struct igb_softc *sc)
2838 struct e1000_hw *hw = &sc->hw;
2839 struct e1000_vf_stats *stats;
2842 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2843 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2844 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2845 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2846 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
2850 igb_update_vf_stats_counters(struct igb_softc *sc)
2852 struct e1000_hw *hw = &sc->hw;
2853 struct e1000_vf_stats *stats;
2855 if (sc->link_speed == 0)
2859 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
2860 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
2861 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
2862 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
2863 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
2866 #ifdef DEVICE_POLLING
2869 igb_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2871 struct igb_softc *sc = ifp->if_softc;
2874 ASSERT_SERIALIZED(&sc->main_serialize);
2878 igb_disable_intr(sc);
2881 case POLL_DEREGISTER:
2882 igb_enable_intr(sc);
2885 case POLL_AND_CHECK_STATUS:
2886 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2887 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
2888 sc->hw.mac.get_link_status = 1;
2889 igb_update_link_status(sc);
2893 if (ifp->if_flags & IFF_RUNNING) {
2894 struct igb_tx_ring *txr;
2897 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2898 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2900 lwkt_serialize_enter(&rxr->rx_serialize);
2901 igb_rxeof(rxr, count);
2902 lwkt_serialize_exit(&rxr->rx_serialize);
2905 txr = &sc->tx_rings[0];
2906 lwkt_serialize_enter(&txr->tx_serialize);
2908 if (!ifq_is_empty(&ifp->if_snd))
2910 lwkt_serialize_exit(&txr->tx_serialize);
2916 #endif /* DEVICE_POLLING */
2921 struct igb_softc *sc = xsc;
2922 struct ifnet *ifp = &sc->arpcom.ac_if;
2925 ASSERT_SERIALIZED(&sc->main_serialize);
2927 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
2932 if (ifp->if_flags & IFF_RUNNING) {
2933 struct igb_tx_ring *txr;
2936 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2937 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2939 if (eicr & rxr->rx_intr_mask) {
2940 lwkt_serialize_enter(&rxr->rx_serialize);
2942 lwkt_serialize_exit(&rxr->rx_serialize);
2946 txr = &sc->tx_rings[0];
2947 if (eicr & txr->tx_intr_mask) {
2948 lwkt_serialize_enter(&txr->tx_serialize);
2950 if (!ifq_is_empty(&ifp->if_snd))
2952 lwkt_serialize_exit(&txr->tx_serialize);
2956 if (eicr & E1000_EICR_OTHER) {
2957 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2959 /* Link status change */
2960 if (icr & E1000_ICR_LSC) {
2961 sc->hw.mac.get_link_status = 1;
2962 igb_update_link_status(sc);
2967 * Reading EICR has the side effect to clear interrupt mask,
2968 * so all interrupts need to be enabled here.
2970 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2974 igb_shared_intr(void *xsc)
2976 struct igb_softc *sc = xsc;
2977 struct ifnet *ifp = &sc->arpcom.ac_if;
2980 ASSERT_SERIALIZED(&sc->main_serialize);
2982 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2985 if (reg_icr == 0xffffffff)
2988 /* Definitely not our interrupt. */
2992 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
2995 if (ifp->if_flags & IFF_RUNNING) {
2997 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3000 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3001 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3003 lwkt_serialize_enter(&rxr->rx_serialize);
3005 lwkt_serialize_exit(&rxr->rx_serialize);
3009 if (reg_icr & E1000_ICR_TXDW) {
3010 struct igb_tx_ring *txr = &sc->tx_rings[0];
3012 lwkt_serialize_enter(&txr->tx_serialize);
3014 if (!ifq_is_empty(&ifp->if_snd))
3016 lwkt_serialize_exit(&txr->tx_serialize);
3020 /* Link status change */
3021 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3022 sc->hw.mac.get_link_status = 1;
3023 igb_update_link_status(sc);
3026 if (reg_icr & E1000_ICR_RXO)
3031 igb_txctx_pullup(struct igb_tx_ring *txr, struct mbuf **m0)
3033 struct mbuf *m = *m0;
3034 struct ether_header *eh;
3037 txr->ctx_try_pullup++;
3039 len = ETHER_HDR_LEN + IGB_IPVHL_SIZE;
3041 if (__predict_false(!M_WRITABLE(m))) {
3042 if (__predict_false(m->m_len < ETHER_HDR_LEN)) {
3048 eh = mtod(m, struct ether_header *);
3050 if (eh->ether_type == htons(ETHERTYPE_VLAN))
3051 len += EVL_ENCAPLEN;
3053 if (m->m_len < len) {
3062 if (__predict_false(m->m_len < ETHER_HDR_LEN)) {
3064 m = m_pullup(m, ETHER_HDR_LEN);
3066 txr->ctx_pullup1_failed++;
3072 eh = mtod(m, struct ether_header *);
3074 if (eh->ether_type == htons(ETHERTYPE_VLAN))
3075 len += EVL_ENCAPLEN;
3077 if (m->m_len < len) {
3079 m = m_pullup(m, len);
3081 txr->ctx_pullup2_failed++;
3091 igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp)
3093 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3095 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3096 union e1000_adv_tx_desc *txd = NULL;
3097 struct mbuf *m_head = *m_headp;
3098 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3099 int maxsegs, nsegs, i, j, error, last = 0;
3100 uint32_t hdrlen = 0;
3102 if (m_head->m_len < IGB_TXCSUM_MINHL &&
3103 ((m_head->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) ||
3104 (m_head->m_flags & M_VLANTAG))) {
3106 * Make sure that ethernet header and ip.ip_hl are in
3107 * contiguous memory, since if TXCSUM or VLANTAG is
3108 * enabled, later TX context descriptor's setup need
3109 * to access ip.ip_hl.
3111 error = igb_txctx_pullup(txr, m_headp);
3113 KKASSERT(*m_headp == NULL);
3119 /* Set basic descriptor constants */
3120 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3121 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3122 if (m_head->m_flags & M_VLANTAG)
3123 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3126 * Map the packet for DMA.
3128 tx_buf = &txr->tx_buf[txr->next_avail_desc];
3129 tx_buf_mapped = tx_buf;
3132 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3133 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
3134 if (maxsegs > IGB_MAX_SCATTER)
3135 maxsegs = IGB_MAX_SCATTER;
3137 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3138 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3140 if (error == ENOBUFS)
3141 txr->sc->mbuf_defrag_failed++;
3143 txr->sc->no_tx_dma_setup++;
3149 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3155 * Set up the context descriptor:
3156 * used when any hardware offload is done.
3157 * This includes CSUM, VLAN, and TSO. It
3158 * will use the first descriptor.
3160 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3161 if (igb_tso_setup(txr, m_head, &hdrlen)) {
3162 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3163 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3164 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3167 } else if (igb_tx_ctx_setup(txr, m_head))
3168 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3170 if (igb_txctx(txr, m_head)) {
3171 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
3172 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3173 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
3178 txr->tx_nsegs += nsegs;
3179 if (txr->tx_nsegs >= txr->intr_nsegs) {
3181 * Report Status (RS) is turned on every intr_nsegs
3182 * descriptors (roughly).
3185 cmd_rs = E1000_ADVTXD_DCMD_RS;
3188 /* Calculate payload length */
3189 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3190 << E1000_ADVTXD_PAYLEN_SHIFT);
3192 /* 82575 needs the queue index added */
3193 if (txr->sc->hw.mac.type == e1000_82575)
3194 olinfo_status |= txr->me << 4;
3196 /* Set up our transmit descriptors */
3197 i = txr->next_avail_desc;
3198 for (j = 0; j < nsegs; j++) {
3200 bus_addr_t seg_addr;
3202 tx_buf = &txr->tx_buf[i];
3203 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3204 seg_addr = segs[j].ds_addr;
3205 seg_len = segs[j].ds_len;
3207 txd->read.buffer_addr = htole64(seg_addr);
3208 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3209 txd->read.olinfo_status = htole32(olinfo_status);
3211 if (++i == txr->num_tx_desc)
3213 tx_buf->m_head = NULL;
3216 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3217 txr->next_avail_desc = i;
3218 txr->tx_avail -= nsegs;
3220 tx_buf->m_head = m_head;
3221 tx_buf_mapped->map = tx_buf->map;
3225 * Last Descriptor of Packet needs End Of Packet (EOP)
3227 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
3230 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000
3231 * that this frame is available to transmit.
3233 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), i);
3240 igb_start(struct ifnet *ifp)
3242 struct igb_softc *sc = ifp->if_softc;
3243 struct igb_tx_ring *txr = &sc->tx_rings[0];
3244 struct mbuf *m_head;
3246 ASSERT_SERIALIZED(&txr->tx_serialize);
3248 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
3251 if (!sc->link_active) {
3252 ifq_purge(&ifp->if_snd);
3256 if (!IGB_IS_NOT_OACTIVE(txr))
3259 while (!ifq_is_empty(&ifp->if_snd)) {
3260 if (IGB_IS_OACTIVE(txr)) {
3261 ifp->if_flags |= IFF_OACTIVE;
3262 /* Set watchdog on */
3267 m_head = ifq_dequeue(&ifp->if_snd, NULL);
3271 if (igb_encap(txr, &m_head)) {
3276 /* Send a copy of the frame to the BPF listener */
3277 ETHER_BPF_MTAP(ifp, m_head);
3282 igb_watchdog(struct ifnet *ifp)
3284 struct igb_softc *sc = ifp->if_softc;
3285 struct igb_tx_ring *txr = &sc->tx_rings[0];
3287 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3290 * If flow control has paused us since last checking
3291 * it invalidates the watchdog timing, so dont run it.
3293 if (sc->pause_frames) {
3294 sc->pause_frames = 0;
3299 if_printf(ifp, "Watchdog timeout -- resetting\n");
3300 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3301 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3302 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3303 if_printf(ifp, "TX(%d) desc avail = %d, "
3304 "Next TX to Clean = %d\n",
3305 txr->me, txr->tx_avail, txr->next_to_clean);
3308 sc->watchdog_events++;
3311 if (!ifq_is_empty(&ifp->if_snd))
3316 igb_set_eitr(struct igb_softc *sc)
3320 if (sc->intr_rate > 0) {
3321 if (sc->hw.mac.type == e1000_82575) {
3322 itr = 1000000000 / 256 / sc->intr_rate;
3325 * Document is wrong on the 2 bits left shift
3328 itr = 1000000 / sc->intr_rate;
3333 if (sc->hw.mac.type == e1000_82575)
3336 itr |= E1000_EITR_CNT_IGNR;
3337 E1000_WRITE_REG(&sc->hw, E1000_EITR(0), itr);
3341 igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3343 struct igb_softc *sc = (void *)arg1;
3344 struct ifnet *ifp = &sc->arpcom.ac_if;
3345 int error, intr_rate;
3347 intr_rate = sc->intr_rate;
3348 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3349 if (error || req->newptr == NULL)
3354 ifnet_serialize_all(ifp);
3356 sc->intr_rate = intr_rate;
3357 if (ifp->if_flags & IFF_RUNNING)
3360 ifnet_deserialize_all(ifp);
3363 if_printf(ifp, "Interrupt rate set to %d/sec\n", sc->intr_rate);
3368 igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3370 struct igb_softc *sc = (void *)arg1;
3371 struct ifnet *ifp = &sc->arpcom.ac_if;
3372 struct igb_tx_ring *txr = &sc->tx_rings[0];
3375 nsegs = txr->intr_nsegs;
3376 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3377 if (error || req->newptr == NULL)
3382 ifnet_serialize_all(ifp);
3384 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
3385 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3389 txr->intr_nsegs = nsegs;
3392 ifnet_deserialize_all(ifp);
3398 igb_init_intr(struct igb_softc *sc)
3400 igb_set_intr_mask(sc);
3401 if (sc->flags & IGB_FLAG_SHARED_INTR)
3404 igb_init_unshared_intr(sc);
3408 igb_init_unshared_intr(struct igb_softc *sc)
3410 struct e1000_hw *hw = &sc->hw;
3411 const struct igb_rx_ring *rxr;
3412 const struct igb_tx_ring *txr;
3413 uint32_t ivar, index;
3417 * Enable extended mode
3419 if (sc->hw.mac.type != e1000_82575) {
3420 E1000_WRITE_REG(hw, E1000_GPIE, E1000_GPIE_NSICR);
3424 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3425 tmp |= E1000_CTRL_EXT_IRCA;
3426 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3430 * Map TX/RX interrupts to EICR
3432 switch (sc->hw.mac.type) {
3436 case e1000_vfadapt_i350:
3438 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3439 rxr = &sc->rx_rings[i];
3442 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3447 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3451 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3453 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3456 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3457 txr = &sc->tx_rings[i];
3460 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3465 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3469 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3471 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3473 /* Clear unused IVAR_MISC */
3474 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3479 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3480 rxr = &sc->rx_rings[i];
3482 index = i & 0x7; /* Each IVAR has two entries */
3483 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3488 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3492 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3494 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3497 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3498 txr = &sc->tx_rings[i];
3500 index = i & 0x7; /* Each IVAR has two entries */
3501 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3506 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3510 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3512 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3514 /* Clear unused IVAR_MISC */
3515 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3520 * Enable necessary interrupt bits.
3522 * The name of the register is confusing; in addition to
3523 * configuring the first vector of MSI-X, it also configures
3524 * which bits of EICR could be set by the hardware even when
3525 * MSI or line interrupt is used; it thus controls interrupt
3526 * generation. It MUST be configured explicitly; the default
3527 * value mentioned in the datasheet is wrong: RX queue0 and
3528 * TX queue0 are NOT enabled by default.
3530 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3538 * Configure interrupt moderation
3544 igb_setup_intr(struct igb_softc *sc)
3546 struct ifnet *ifp = &sc->arpcom.ac_if;
3547 int error, i, intr_bit, intr_bitmax;
3550 * Setup interrupt mask
3552 switch (sc->hw.mac.type) {
3554 intr_bitmax = IGB_MAX_TXRXINT_82575;
3557 intr_bitmax = IGB_MAX_TXRXINT_82580;
3560 intr_bitmax = IGB_MAX_TXRXINT_I350;
3563 intr_bitmax = IGB_MAX_TXRXINT_82576;
3566 intr_bitmax = IGB_MIN_TXRXINT;
3570 for (i = 0; i < sc->tx_ring_cnt; ++i)
3571 igb_setup_tx_intr(&sc->tx_rings[i], &intr_bit, intr_bitmax);
3572 for (i = 0; i < sc->rx_ring_cnt; ++i)
3573 igb_setup_rx_intr(&sc->rx_rings[i], &intr_bit, intr_bitmax);
3575 igb_set_intr_mask(sc);
3577 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
3580 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
3582 sc->flags |= IGB_FLAG_SHARED_INTR;
3584 device_printf(sc->dev, "IRQ shared\n");
3585 } else if (bootverbose) {
3586 device_printf(sc->dev, "IRQ unshared\n");
3590 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
3591 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_shared_intr : igb_intr,
3592 sc, &sc->intr_tag, &sc->main_serialize);
3594 device_printf(sc->dev, "Failed to register interrupt handler");
3598 ifp->if_cpuid = rman_get_cpuid(sc->intr_res);
3599 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
3605 igb_setup_tx_intr(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
3607 if (txr->sc->hw.mac.type == e1000_82575) {
3608 txr->tx_intr_bit = 0; /* unused */
3611 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3614 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3617 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3620 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3623 panic("unsupported # of TX ring, %d\n", txr->me);
3626 int intr_bit = *intr_bit0;
3628 txr->tx_intr_bit = intr_bit % intr_bitmax;
3629 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
3631 *intr_bit0 = intr_bit + 1;
3636 igb_setup_rx_intr(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
3638 if (rxr->sc->hw.mac.type == e1000_82575) {
3639 rxr->rx_intr_bit = 0; /* unused */
3642 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3645 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3648 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3651 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3654 panic("unsupported # of RX ring, %d\n", rxr->me);
3657 int intr_bit = *intr_bit0;
3659 rxr->rx_intr_bit = intr_bit % intr_bitmax;
3660 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
3662 *intr_bit0 = intr_bit + 1;
3667 igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3669 struct igb_softc *sc = ifp->if_softc;
3671 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3672 sc->tx_serialize, sc->rx_serialize, slz);
3676 igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3678 struct igb_softc *sc = ifp->if_softc;
3680 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3681 sc->tx_serialize, sc->rx_serialize, slz);
3685 igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3687 struct igb_softc *sc = ifp->if_softc;
3689 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3690 sc->tx_serialize, sc->rx_serialize, slz);
3696 igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3697 boolean_t serialized)
3699 struct igb_softc *sc = ifp->if_softc;
3701 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3702 sc->tx_serialize, sc->rx_serialize, slz, serialized);
3705 #endif /* INVARIANTS */
3708 igb_set_intr_mask(struct igb_softc *sc)
3712 sc->intr_mask = E1000_EICR_OTHER;
3713 for (i = 0; i < sc->rx_ring_inuse; ++i)
3714 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
3715 for (i = 0; i < sc->tx_ring_cnt; ++i)
3716 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
3718 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",
3724 igb_alloc_intr(struct igb_softc *sc)
3728 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
3729 &sc->intr_rid, &intr_flags);
3731 sc->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
3732 &sc->intr_rid, intr_flags);
3733 if (sc->intr_res == NULL) {
3734 device_printf(sc->dev, "Unable to allocate bus resource: "
3742 igb_free_intr(struct igb_softc *sc)
3744 if (sc->intr_res != NULL) {
3745 bus_release_resource(sc->dev, SYS_RES_IRQ, sc->intr_rid,
3748 if (sc->intr_type == PCI_INTR_TYPE_MSI)
3749 pci_release_msi(sc->dev);