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
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
32 #include "opt_ifpoll.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 boolean_t igb_txcsum_ctx(struct igb_tx_ring *, struct mbuf *);
139 static int igb_tso_pullup(struct igb_tx_ring *, struct mbuf **);
140 static void igb_tso_ctx(struct igb_tx_ring *, struct mbuf *, uint32_t *);
141 static void igb_add_sysctl(struct igb_softc *);
142 static int igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS);
143 static int igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS);
144 static int igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS);
145 static int igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS);
146 static int igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS);
147 static void igb_set_ring_inuse(struct igb_softc *, boolean_t);
148 static int igb_get_rxring_inuse(const struct igb_softc *, boolean_t);
149 static int igb_get_txring_inuse(const struct igb_softc *, boolean_t);
151 static int igb_sysctl_npoll_rxoff(SYSCTL_HANDLER_ARGS);
152 static int igb_sysctl_npoll_txoff(SYSCTL_HANDLER_ARGS);
155 static void igb_vf_init_stats(struct igb_softc *);
156 static void igb_reset(struct igb_softc *);
157 static void igb_update_stats_counters(struct igb_softc *);
158 static void igb_update_vf_stats_counters(struct igb_softc *);
159 static void igb_update_link_status(struct igb_softc *);
160 static void igb_init_tx_unit(struct igb_softc *);
161 static void igb_init_rx_unit(struct igb_softc *);
163 static void igb_set_vlan(struct igb_softc *);
164 static void igb_set_multi(struct igb_softc *);
165 static void igb_set_promisc(struct igb_softc *);
166 static void igb_disable_promisc(struct igb_softc *);
168 static int igb_alloc_rings(struct igb_softc *);
169 static void igb_free_rings(struct igb_softc *);
170 static int igb_create_tx_ring(struct igb_tx_ring *);
171 static int igb_create_rx_ring(struct igb_rx_ring *);
172 static void igb_free_tx_ring(struct igb_tx_ring *);
173 static void igb_free_rx_ring(struct igb_rx_ring *);
174 static void igb_destroy_tx_ring(struct igb_tx_ring *, int);
175 static void igb_destroy_rx_ring(struct igb_rx_ring *, int);
176 static void igb_init_tx_ring(struct igb_tx_ring *);
177 static int igb_init_rx_ring(struct igb_rx_ring *);
178 static int igb_newbuf(struct igb_rx_ring *, int, boolean_t);
179 static int igb_encap(struct igb_tx_ring *, struct mbuf **, int *, int *);
180 static void igb_rx_refresh(struct igb_rx_ring *, int);
182 static void igb_stop(struct igb_softc *);
183 static void igb_init(void *);
184 static int igb_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
185 static void igb_media_status(struct ifnet *, struct ifmediareq *);
186 static int igb_media_change(struct ifnet *);
187 static void igb_timer(void *);
188 static void igb_watchdog(struct ifaltq_subque *);
189 static void igb_start(struct ifnet *, struct ifaltq_subque *);
191 static void igb_npoll(struct ifnet *, struct ifpoll_info *);
192 static void igb_npoll_rx(struct ifnet *, void *, int);
193 static void igb_npoll_tx(struct ifnet *, void *, int);
194 static void igb_npoll_status(struct ifnet *);
196 static void igb_serialize(struct ifnet *, enum ifnet_serialize);
197 static void igb_deserialize(struct ifnet *, enum ifnet_serialize);
198 static int igb_tryserialize(struct ifnet *, enum ifnet_serialize);
200 static void igb_serialize_assert(struct ifnet *, enum ifnet_serialize,
204 static void igb_intr(void *);
205 static void igb_intr_shared(void *);
206 static void igb_rxeof(struct igb_rx_ring *, int);
207 static void igb_txeof(struct igb_tx_ring *);
208 static void igb_set_eitr(struct igb_softc *, int, int);
209 static void igb_enable_intr(struct igb_softc *);
210 static void igb_disable_intr(struct igb_softc *);
211 static void igb_init_unshared_intr(struct igb_softc *);
212 static void igb_init_intr(struct igb_softc *);
213 static int igb_setup_intr(struct igb_softc *);
214 static void igb_set_txintr_mask(struct igb_tx_ring *, int *, int);
215 static void igb_set_rxintr_mask(struct igb_rx_ring *, int *, int);
216 static void igb_set_intr_mask(struct igb_softc *);
217 static int igb_alloc_intr(struct igb_softc *);
218 static void igb_free_intr(struct igb_softc *);
219 static void igb_teardown_intr(struct igb_softc *);
220 static void igb_msix_try_alloc(struct igb_softc *);
221 static void igb_msix_free(struct igb_softc *, boolean_t);
222 static int igb_msix_setup(struct igb_softc *);
223 static void igb_msix_teardown(struct igb_softc *, int);
224 static void igb_msix_rx(void *);
225 static void igb_msix_tx(void *);
226 static void igb_msix_status(void *);
228 /* Management and WOL Support */
229 static void igb_get_mgmt(struct igb_softc *);
230 static void igb_rel_mgmt(struct igb_softc *);
231 static void igb_get_hw_control(struct igb_softc *);
232 static void igb_rel_hw_control(struct igb_softc *);
233 static void igb_enable_wol(device_t);
235 static device_method_t igb_methods[] = {
236 /* Device interface */
237 DEVMETHOD(device_probe, igb_probe),
238 DEVMETHOD(device_attach, igb_attach),
239 DEVMETHOD(device_detach, igb_detach),
240 DEVMETHOD(device_shutdown, igb_shutdown),
241 DEVMETHOD(device_suspend, igb_suspend),
242 DEVMETHOD(device_resume, igb_resume),
246 static driver_t igb_driver = {
249 sizeof(struct igb_softc),
252 static devclass_t igb_devclass;
254 DECLARE_DUMMY_MODULE(if_igb);
255 MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
256 DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
258 static int igb_rxd = IGB_DEFAULT_RXD;
259 static int igb_txd = IGB_DEFAULT_TXD;
260 static int igb_rxr = 0;
261 static int igb_txr = 0;
262 static int igb_msi_enable = 1;
263 static int igb_msix_enable = 1;
264 static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
265 static int igb_fc_setting = e1000_fc_full;
268 * DMA Coalescing, only for i350 - default to off,
269 * this feature is for power savings
271 static int igb_dma_coalesce = 0;
273 TUNABLE_INT("hw.igb.rxd", &igb_rxd);
274 TUNABLE_INT("hw.igb.txd", &igb_txd);
275 TUNABLE_INT("hw.igb.rxr", &igb_rxr);
276 TUNABLE_INT("hw.igb.txr", &igb_txr);
277 TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
278 TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
279 TUNABLE_INT("hw.igb.fc_setting", &igb_fc_setting);
282 TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
283 TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
286 igb_rxcsum(uint32_t staterr, struct mbuf *mp)
288 /* Ignore Checksum bit is set */
289 if (staterr & E1000_RXD_STAT_IXSM)
292 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
294 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
296 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
297 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
298 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
299 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
300 mp->m_pkthdr.csum_data = htons(0xffff);
305 static __inline struct pktinfo *
306 igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
307 uint32_t hash, uint32_t hashtype, uint32_t staterr)
310 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
311 pi->pi_netisr = NETISR_IP;
313 pi->pi_l3proto = IPPROTO_TCP;
316 case E1000_RXDADV_RSSTYPE_IPV4:
317 if (staterr & E1000_RXD_STAT_IXSM)
321 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
322 E1000_RXD_STAT_TCPCS) {
323 pi->pi_netisr = NETISR_IP;
325 pi->pi_l3proto = IPPROTO_UDP;
333 m->m_flags |= M_HASH;
334 m->m_pkthdr.hash = toeplitz_hash(hash);
339 igb_probe(device_t dev)
341 const struct igb_device *d;
344 vid = pci_get_vendor(dev);
345 did = pci_get_device(dev);
347 for (d = igb_devices; d->desc != NULL; ++d) {
348 if (vid == d->vid && did == d->did) {
349 device_set_desc(dev, d->desc);
357 igb_attach(device_t dev)
359 struct igb_softc *sc = device_get_softc(dev);
360 uint16_t eeprom_data;
361 int error = 0, i, j, ring_max;
363 int offset, offset_def;
368 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
369 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
370 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
371 igb_sysctl_nvm_info, "I", "NVM Information");
372 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
373 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
374 OID_AUTO, "flow_control", CTLTYPE_INT|CTLFLAG_RW,
375 adapter, 0, igb_set_flowcntl, "I", "Flow Control");
378 callout_init_mp(&sc->timer);
379 lwkt_serialize_init(&sc->main_serialize);
381 if_initname(&sc->arpcom.ac_if, device_get_name(dev),
382 device_get_unit(dev));
383 sc->dev = sc->osdep.dev = dev;
386 * Determine hardware and mac type
388 sc->hw.vendor_id = pci_get_vendor(dev);
389 sc->hw.device_id = pci_get_device(dev);
390 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
391 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
392 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
394 if (e1000_set_mac_type(&sc->hw))
397 /* Are we a VF device? */
398 if (sc->hw.mac.type == e1000_vfadapt ||
399 sc->hw.mac.type == e1000_vfadapt_i350)
405 * Configure total supported RX/TX ring count
407 switch (sc->hw.mac.type) {
409 ring_max = IGB_MAX_RING_82575;
412 ring_max = IGB_MAX_RING_82580;
415 ring_max = IGB_MAX_RING_I350;
418 ring_max = IGB_MAX_RING_82576;
421 ring_max = IGB_MIN_RING;
425 sc->rx_ring_cnt = device_getenv_int(dev, "rxr", igb_rxr);
426 sc->rx_ring_cnt = if_ring_count2(sc->rx_ring_cnt, ring_max);
428 sc->rx_ring_cnt = device_getenv_int(dev, "rxr_debug", sc->rx_ring_cnt);
430 sc->rx_ring_inuse = sc->rx_ring_cnt;
432 sc->tx_ring_cnt = device_getenv_int(dev, "txr", igb_txr);
433 sc->tx_ring_cnt = if_ring_count2(sc->tx_ring_cnt, /* XXX ring_max */1);
435 sc->tx_ring_cnt = device_getenv_int(dev, "txr_debug", sc->tx_ring_cnt);
437 sc->tx_ring_inuse = sc->tx_ring_cnt;
439 /* Enable bus mastering */
440 pci_enable_busmaster(dev);
445 sc->mem_rid = PCIR_BAR(0);
446 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
448 if (sc->mem_res == NULL) {
449 device_printf(dev, "Unable to allocate bus resource: memory\n");
453 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
454 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
456 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
458 /* Save PCI command register for Shared Code */
459 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
460 sc->hw.back = &sc->osdep;
462 /* Do Shared Code initialization */
463 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
464 device_printf(dev, "Setup of Shared code failed\n");
469 e1000_get_bus_info(&sc->hw);
471 sc->hw.mac.autoneg = DO_AUTO_NEG;
472 sc->hw.phy.autoneg_wait_to_complete = FALSE;
473 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
476 if (sc->hw.phy.media_type == e1000_media_type_copper) {
477 sc->hw.phy.mdix = AUTO_ALL_MODES;
478 sc->hw.phy.disable_polarity_correction = FALSE;
479 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
482 /* Set the frame limits assuming standard ethernet sized frames. */
483 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
485 /* Allocate RX/TX rings */
486 error = igb_alloc_rings(sc);
492 * NPOLLING RX CPU offset
494 if (sc->rx_ring_cnt == ncpus2) {
497 offset_def = (sc->rx_ring_cnt * device_get_unit(dev)) % ncpus2;
498 offset = device_getenv_int(dev, "npoll.rxoff", offset_def);
499 if (offset >= ncpus2 ||
500 offset % sc->rx_ring_cnt != 0) {
501 device_printf(dev, "invalid npoll.rxoff %d, use %d\n",
506 sc->rx_npoll_off = offset;
509 * NPOLLING TX CPU offset
511 if (sc->tx_ring_cnt == ncpus2) {
514 offset_def = (sc->tx_ring_cnt * device_get_unit(dev)) % ncpus2;
515 offset = device_getenv_int(dev, "npoll.txoff", offset_def);
516 if (offset >= ncpus2 ||
517 offset % sc->tx_ring_cnt != 0) {
518 device_printf(dev, "invalid npoll.txoff %d, use %d\n",
523 sc->tx_npoll_off = offset;
526 /* Allocate interrupt */
527 error = igb_alloc_intr(sc);
535 sc->serializes[i++] = &sc->main_serialize;
537 sc->tx_serialize = i;
538 for (j = 0; j < sc->tx_ring_cnt; ++j)
539 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
541 sc->rx_serialize = i;
542 for (j = 0; j < sc->rx_ring_cnt; ++j)
543 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
545 sc->serialize_cnt = i;
546 KKASSERT(sc->serialize_cnt <= IGB_NSERIALIZE);
548 /* Allocate the appropriate stats memory */
550 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
552 igb_vf_init_stats(sc);
554 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
558 /* Allocate multicast array memory. */
559 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
562 /* Some adapter-specific advanced features */
563 if (sc->hw.mac.type >= e1000_i350) {
565 igb_set_sysctl_value(adapter, "dma_coalesce",
566 "configure dma coalesce",
567 &adapter->dma_coalesce, igb_dma_coalesce);
568 igb_set_sysctl_value(adapter, "eee_disabled",
569 "enable Energy Efficient Ethernet",
570 &adapter->hw.dev_spec._82575.eee_disable,
573 sc->dma_coalesce = igb_dma_coalesce;
574 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
576 e1000_set_eee_i350(&sc->hw);
580 * Start from a known state, this is important in reading the nvm and
583 e1000_reset_hw(&sc->hw);
585 /* Make sure we have a good EEPROM before we read from it */
586 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
588 * Some PCI-E parts fail the first check due to
589 * the link being in sleep state, call it again,
590 * if it fails a second time its a real issue.
592 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
594 "The EEPROM Checksum Is Not Valid\n");
600 /* Copy the permanent MAC address out of the EEPROM */
601 if (e1000_read_mac_addr(&sc->hw) < 0) {
602 device_printf(dev, "EEPROM read error while reading MAC"
607 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
608 device_printf(dev, "Invalid MAC address\n");
613 /* Setup OS specific network interface */
616 /* Add sysctl tree, must after igb_setup_ifp() */
619 /* Now get a good starting state */
622 /* Initialize statistics */
623 igb_update_stats_counters(sc);
625 sc->hw.mac.get_link_status = 1;
626 igb_update_link_status(sc);
628 /* Indicate SOL/IDER usage */
629 if (e1000_check_reset_block(&sc->hw)) {
631 "PHY reset is blocked due to SOL/IDER session.\n");
634 /* Determine if we have to control management hardware */
635 if (e1000_enable_mng_pass_thru(&sc->hw))
636 sc->flags |= IGB_FLAG_HAS_MGMT;
641 /* APME bit in EEPROM is mapped to WUC.APME */
642 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
644 sc->wol = E1000_WUFC_MAG;
645 /* XXX disable WOL */
649 /* Register for VLAN events */
650 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
651 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
652 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
653 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
657 igb_add_hw_stats(adapter);
660 error = igb_setup_intr(sc);
662 ether_ifdetach(&sc->arpcom.ac_if);
666 for (i = 0; i < sc->tx_ring_cnt; ++i) {
667 struct ifaltq_subque *ifsq =
668 ifq_get_subq(&sc->arpcom.ac_if.if_snd, i);
669 struct igb_tx_ring *txr = &sc->tx_rings[i];
671 ifsq_set_cpuid(ifsq, txr->tx_intr_cpuid);
672 ifsq_set_priv(ifsq, txr);
675 ifsq_watchdog_init(&txr->tx_watchdog, ifsq, igb_watchdog);
686 igb_detach(device_t dev)
688 struct igb_softc *sc = device_get_softc(dev);
690 if (device_is_attached(dev)) {
691 struct ifnet *ifp = &sc->arpcom.ac_if;
693 ifnet_serialize_all(ifp);
697 e1000_phy_hw_reset(&sc->hw);
699 /* Give control back to firmware */
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 igb_teardown_intr(sc);
711 ifnet_deserialize_all(ifp);
714 } else if (sc->mem_res != NULL) {
715 igb_rel_hw_control(sc);
717 bus_generic_detach(dev);
719 if (sc->sysctl_tree != NULL)
720 sysctl_ctx_free(&sc->sysctl_ctx);
724 if (sc->msix_mem_res != NULL) {
725 bus_release_resource(dev, SYS_RES_MEMORY, sc->msix_mem_rid,
728 if (sc->mem_res != NULL) {
729 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
736 kfree(sc->mta, M_DEVBUF);
737 if (sc->stats != NULL)
738 kfree(sc->stats, M_DEVBUF);
744 igb_shutdown(device_t dev)
746 return igb_suspend(dev);
750 igb_suspend(device_t dev)
752 struct igb_softc *sc = device_get_softc(dev);
753 struct ifnet *ifp = &sc->arpcom.ac_if;
755 ifnet_serialize_all(ifp);
760 igb_rel_hw_control(sc);
763 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
764 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
768 ifnet_deserialize_all(ifp);
770 return bus_generic_suspend(dev);
774 igb_resume(device_t dev)
776 struct igb_softc *sc = device_get_softc(dev);
777 struct ifnet *ifp = &sc->arpcom.ac_if;
780 ifnet_serialize_all(ifp);
785 for (i = 0; i < sc->tx_ring_inuse; ++i)
786 ifsq_devstart_sched(sc->tx_rings[i].ifsq);
788 ifnet_deserialize_all(ifp);
790 return bus_generic_resume(dev);
794 igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
796 struct igb_softc *sc = ifp->if_softc;
797 struct ifreq *ifr = (struct ifreq *)data;
798 int max_frame_size, mask, reinit;
801 ASSERT_IFNET_SERIALIZED_ALL(ifp);
805 max_frame_size = 9234;
806 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
812 ifp->if_mtu = ifr->ifr_mtu;
813 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
816 if (ifp->if_flags & IFF_RUNNING)
821 if (ifp->if_flags & IFF_UP) {
822 if (ifp->if_flags & IFF_RUNNING) {
823 if ((ifp->if_flags ^ sc->if_flags) &
824 (IFF_PROMISC | IFF_ALLMULTI)) {
825 igb_disable_promisc(sc);
831 } else if (ifp->if_flags & IFF_RUNNING) {
834 sc->if_flags = ifp->if_flags;
839 if (ifp->if_flags & IFF_RUNNING) {
840 igb_disable_intr(sc);
843 if (!(ifp->if_flags & IFF_NPOLLING))
851 * As the speed/duplex settings are being
852 * changed, we need toreset the PHY.
854 sc->hw.phy.reset_disable = FALSE;
856 /* Check SOL/IDER usage */
857 if (e1000_check_reset_block(&sc->hw)) {
858 if_printf(ifp, "Media change is "
859 "blocked due to SOL/IDER session.\n");
865 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
870 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
871 if (mask & IFCAP_RXCSUM) {
872 ifp->if_capenable ^= IFCAP_RXCSUM;
875 if (mask & IFCAP_VLAN_HWTAGGING) {
876 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
879 if (mask & IFCAP_TXCSUM) {
880 ifp->if_capenable ^= IFCAP_TXCSUM;
881 if (ifp->if_capenable & IFCAP_TXCSUM)
882 ifp->if_hwassist |= IGB_CSUM_FEATURES;
884 ifp->if_hwassist &= ~IGB_CSUM_FEATURES;
886 if (mask & IFCAP_TSO) {
887 ifp->if_capenable ^= IFCAP_TSO;
888 if (ifp->if_capenable & IFCAP_TSO)
889 ifp->if_hwassist |= CSUM_TSO;
891 ifp->if_hwassist &= ~CSUM_TSO;
893 if (mask & IFCAP_RSS)
894 ifp->if_capenable ^= IFCAP_RSS;
895 if (reinit && (ifp->if_flags & IFF_RUNNING))
900 error = ether_ioctl(ifp, command, data);
909 struct igb_softc *sc = xsc;
910 struct ifnet *ifp = &sc->arpcom.ac_if;
914 ASSERT_IFNET_SERIALIZED_ALL(ifp);
918 /* Get the latest mac address, User can use a LAA */
919 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
921 /* Put the address into the Receive Address Array */
922 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
925 igb_update_link_status(sc);
927 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
929 /* Configure for OS presence */
934 if (ifp->if_flags & IFF_NPOLLING)
938 /* Configured used RX/TX rings */
939 igb_set_ring_inuse(sc, polling);
940 ifq_set_subq_mask(&ifp->if_snd, sc->tx_ring_inuse - 1);
942 /* Initialize interrupt */
945 /* Prepare transmit descriptors and buffers */
946 for (i = 0; i < sc->tx_ring_inuse; ++i)
947 igb_init_tx_ring(&sc->tx_rings[i]);
948 igb_init_tx_unit(sc);
950 /* Setup Multicast table */
955 * Figure out the desired mbuf pool
956 * for doing jumbo/packetsplit
958 if (adapter->max_frame_size <= 2048)
959 adapter->rx_mbuf_sz = MCLBYTES;
960 else if (adapter->max_frame_size <= 4096)
961 adapter->rx_mbuf_sz = MJUMPAGESIZE;
963 adapter->rx_mbuf_sz = MJUM9BYTES;
966 /* Prepare receive descriptors and buffers */
967 for (i = 0; i < sc->rx_ring_inuse; ++i) {
970 error = igb_init_rx_ring(&sc->rx_rings[i]);
972 if_printf(ifp, "Could not setup receive structures\n");
977 igb_init_rx_unit(sc);
979 /* Enable VLAN support */
980 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
983 /* Don't lose promiscuous settings */
986 ifp->if_flags |= IFF_RUNNING;
987 for (i = 0; i < sc->tx_ring_inuse; ++i) {
988 ifsq_clr_oactive(sc->tx_rings[i].ifsq);
989 ifsq_watchdog_start(&sc->tx_rings[i].tx_watchdog);
992 if (polling || sc->intr_type == PCI_INTR_TYPE_MSIX)
993 sc->timer_cpuid = 0; /* XXX fixed */
995 sc->timer_cpuid = rman_get_cpuid(sc->intr_res);
996 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
997 e1000_clear_hw_cntrs_base_generic(&sc->hw);
999 /* This clears any pending interrupts */
1000 E1000_READ_REG(&sc->hw, E1000_ICR);
1003 * Only enable interrupts if we are not polling, make sure
1004 * they are off otherwise.
1007 igb_disable_intr(sc);
1009 igb_enable_intr(sc);
1010 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
1013 /* Set Energy Efficient Ethernet */
1014 e1000_set_eee_i350(&sc->hw);
1016 /* Don't reset the phy next time init gets called */
1017 sc->hw.phy.reset_disable = TRUE;
1021 igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1023 struct igb_softc *sc = ifp->if_softc;
1024 u_char fiber_type = IFM_1000_SX;
1026 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1028 igb_update_link_status(sc);
1030 ifmr->ifm_status = IFM_AVALID;
1031 ifmr->ifm_active = IFM_ETHER;
1033 if (!sc->link_active)
1036 ifmr->ifm_status |= IFM_ACTIVE;
1038 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1039 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1040 ifmr->ifm_active |= fiber_type | IFM_FDX;
1042 switch (sc->link_speed) {
1044 ifmr->ifm_active |= IFM_10_T;
1048 ifmr->ifm_active |= IFM_100_TX;
1052 ifmr->ifm_active |= IFM_1000_T;
1055 if (sc->link_duplex == FULL_DUPLEX)
1056 ifmr->ifm_active |= IFM_FDX;
1058 ifmr->ifm_active |= IFM_HDX;
1063 igb_media_change(struct ifnet *ifp)
1065 struct igb_softc *sc = ifp->if_softc;
1066 struct ifmedia *ifm = &sc->media;
1068 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1070 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1073 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1075 sc->hw.mac.autoneg = DO_AUTO_NEG;
1076 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1082 sc->hw.mac.autoneg = DO_AUTO_NEG;
1083 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1087 sc->hw.mac.autoneg = FALSE;
1088 sc->hw.phy.autoneg_advertised = 0;
1089 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1090 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1092 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1096 sc->hw.mac.autoneg = FALSE;
1097 sc->hw.phy.autoneg_advertised = 0;
1098 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1099 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1101 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1105 if_printf(ifp, "Unsupported media type\n");
1115 igb_set_promisc(struct igb_softc *sc)
1117 struct ifnet *ifp = &sc->arpcom.ac_if;
1118 struct e1000_hw *hw = &sc->hw;
1122 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1126 reg = E1000_READ_REG(hw, E1000_RCTL);
1127 if (ifp->if_flags & IFF_PROMISC) {
1128 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1129 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1130 } else if (ifp->if_flags & IFF_ALLMULTI) {
1131 reg |= E1000_RCTL_MPE;
1132 reg &= ~E1000_RCTL_UPE;
1133 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1138 igb_disable_promisc(struct igb_softc *sc)
1140 struct e1000_hw *hw = &sc->hw;
1144 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1147 reg = E1000_READ_REG(hw, E1000_RCTL);
1148 reg &= ~E1000_RCTL_UPE;
1149 reg &= ~E1000_RCTL_MPE;
1150 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1154 igb_set_multi(struct igb_softc *sc)
1156 struct ifnet *ifp = &sc->arpcom.ac_if;
1157 struct ifmultiaddr *ifma;
1158 uint32_t reg_rctl = 0;
1163 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1165 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1166 if (ifma->ifma_addr->sa_family != AF_LINK)
1169 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1172 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1173 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1177 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1178 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1179 reg_rctl |= E1000_RCTL_MPE;
1180 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1182 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1187 igb_timer(void *xsc)
1189 struct igb_softc *sc = xsc;
1191 lwkt_serialize_enter(&sc->main_serialize);
1193 igb_update_link_status(sc);
1194 igb_update_stats_counters(sc);
1196 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
1198 lwkt_serialize_exit(&sc->main_serialize);
1202 igb_update_link_status(struct igb_softc *sc)
1204 struct ifnet *ifp = &sc->arpcom.ac_if;
1205 struct e1000_hw *hw = &sc->hw;
1206 uint32_t link_check, thstat, ctrl;
1208 link_check = thstat = ctrl = 0;
1210 /* Get the cached link value or read for real */
1211 switch (hw->phy.media_type) {
1212 case e1000_media_type_copper:
1213 if (hw->mac.get_link_status) {
1214 /* Do the work to read phy */
1215 e1000_check_for_link(hw);
1216 link_check = !hw->mac.get_link_status;
1222 case e1000_media_type_fiber:
1223 e1000_check_for_link(hw);
1224 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1227 case e1000_media_type_internal_serdes:
1228 e1000_check_for_link(hw);
1229 link_check = hw->mac.serdes_has_link;
1232 /* VF device is type_unknown */
1233 case e1000_media_type_unknown:
1234 e1000_check_for_link(hw);
1235 link_check = !hw->mac.get_link_status;
1241 /* Check for thermal downshift or shutdown */
1242 if (hw->mac.type == e1000_i350) {
1243 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1244 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1247 /* Now we check if a transition has happened */
1248 if (link_check && sc->link_active == 0) {
1249 e1000_get_speed_and_duplex(hw,
1250 &sc->link_speed, &sc->link_duplex);
1252 if_printf(ifp, "Link is up %d Mbps %s\n",
1254 sc->link_duplex == FULL_DUPLEX ?
1255 "Full Duplex" : "Half Duplex");
1257 sc->link_active = 1;
1259 ifp->if_baudrate = sc->link_speed * 1000000;
1260 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1261 (thstat & E1000_THSTAT_LINK_THROTTLE))
1262 if_printf(ifp, "Link: thermal downshift\n");
1263 /* This can sleep */
1264 ifp->if_link_state = LINK_STATE_UP;
1265 if_link_state_change(ifp);
1266 } else if (!link_check && sc->link_active == 1) {
1267 ifp->if_baudrate = sc->link_speed = 0;
1268 sc->link_duplex = 0;
1270 if_printf(ifp, "Link is Down\n");
1271 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1272 (thstat & E1000_THSTAT_PWR_DOWN))
1273 if_printf(ifp, "Link: thermal shutdown\n");
1274 sc->link_active = 0;
1275 /* This can sleep */
1276 ifp->if_link_state = LINK_STATE_DOWN;
1277 if_link_state_change(ifp);
1282 igb_stop(struct igb_softc *sc)
1284 struct ifnet *ifp = &sc->arpcom.ac_if;
1287 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1289 igb_disable_intr(sc);
1291 callout_stop(&sc->timer);
1293 ifp->if_flags &= ~IFF_RUNNING;
1294 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1295 ifsq_clr_oactive(sc->tx_rings[i].ifsq);
1296 ifsq_watchdog_stop(&sc->tx_rings[i].tx_watchdog);
1297 sc->tx_rings[i].tx_flags &= ~IGB_TXFLAG_ENABLED;
1300 e1000_reset_hw(&sc->hw);
1301 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1303 e1000_led_off(&sc->hw);
1304 e1000_cleanup_led(&sc->hw);
1306 for (i = 0; i < sc->tx_ring_cnt; ++i)
1307 igb_free_tx_ring(&sc->tx_rings[i]);
1308 for (i = 0; i < sc->rx_ring_cnt; ++i)
1309 igb_free_rx_ring(&sc->rx_rings[i]);
1313 igb_reset(struct igb_softc *sc)
1315 struct ifnet *ifp = &sc->arpcom.ac_if;
1316 struct e1000_hw *hw = &sc->hw;
1317 struct e1000_fc_info *fc = &hw->fc;
1321 /* Let the firmware know the OS is in control */
1322 igb_get_hw_control(sc);
1325 * Packet Buffer Allocation (PBA)
1326 * Writing PBA sets the receive portion of the buffer
1327 * the remainder is used for the transmit buffer.
1329 switch (hw->mac.type) {
1331 pba = E1000_PBA_32K;
1336 pba = E1000_READ_REG(hw, E1000_RXPBS);
1337 pba &= E1000_RXPBS_SIZE_MASK_82576;
1342 case e1000_vfadapt_i350:
1343 pba = E1000_READ_REG(hw, E1000_RXPBS);
1344 pba = e1000_rxpbs_adjust_82580(pba);
1346 /* XXX pba = E1000_PBA_35K; */
1352 /* Special needs in case of Jumbo frames */
1353 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1354 uint32_t tx_space, min_tx, min_rx;
1356 pba = E1000_READ_REG(hw, E1000_PBA);
1357 tx_space = pba >> 16;
1360 min_tx = (sc->max_frame_size +
1361 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1362 min_tx = roundup2(min_tx, 1024);
1364 min_rx = sc->max_frame_size;
1365 min_rx = roundup2(min_rx, 1024);
1367 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1368 pba = pba - (min_tx - tx_space);
1370 * if short on rx space, rx wins
1371 * and must trump tx adjustment
1376 E1000_WRITE_REG(hw, E1000_PBA, pba);
1380 * These parameters control the automatic generation (Tx) and
1381 * response (Rx) to Ethernet PAUSE frames.
1382 * - High water mark should allow for at least two frames to be
1383 * received after sending an XOFF.
1384 * - Low water mark works best when it is very near the high water mark.
1385 * This allows the receiver to restart by sending XON when it has
1388 hwm = min(((pba << 10) * 9 / 10),
1389 ((pba << 10) - 2 * sc->max_frame_size));
1391 if (hw->mac.type < e1000_82576) {
1392 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1393 fc->low_water = fc->high_water - 8;
1395 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1396 fc->low_water = fc->high_water - 16;
1398 fc->pause_time = IGB_FC_PAUSE_TIME;
1399 fc->send_xon = TRUE;
1401 /* Issue a global reset */
1403 E1000_WRITE_REG(hw, E1000_WUC, 0);
1405 if (e1000_init_hw(hw) < 0)
1406 if_printf(ifp, "Hardware Initialization Failed\n");
1408 /* Setup DMA Coalescing */
1409 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1412 hwm = (pba - 4) << 10;
1413 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1414 & E1000_DMACR_DMACTHR_MASK;
1416 /* transition to L0x or L1 if available..*/
1417 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1419 /* timer = +-1000 usec in 32usec intervals */
1421 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1423 /* No lower threshold */
1424 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1426 /* set hwm to PBA - 2 * max frame size */
1427 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1429 /* Set the interval before transition */
1430 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1431 reg |= 0x800000FF; /* 255 usec */
1432 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1434 /* free space in tx packet buffer to wake from DMA coal */
1435 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1436 (20480 - (2 * sc->max_frame_size)) >> 6);
1438 /* make low power state decision controlled by DMA coal */
1439 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1440 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1441 reg | E1000_PCIEMISC_LX_DECISION);
1442 if_printf(ifp, "DMA Coalescing enabled\n");
1445 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1446 e1000_get_phy_info(hw);
1447 e1000_check_for_link(hw);
1451 igb_setup_ifp(struct igb_softc *sc)
1453 struct ifnet *ifp = &sc->arpcom.ac_if;
1456 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1457 ifp->if_init = igb_init;
1458 ifp->if_ioctl = igb_ioctl;
1459 ifp->if_start = igb_start;
1460 ifp->if_serialize = igb_serialize;
1461 ifp->if_deserialize = igb_deserialize;
1462 ifp->if_tryserialize = igb_tryserialize;
1464 ifp->if_serialize_assert = igb_serialize_assert;
1466 #ifdef IFPOLL_ENABLE
1467 ifp->if_npoll = igb_npoll;
1470 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1471 ifq_set_ready(&ifp->if_snd);
1472 ifq_set_subq_cnt(&ifp->if_snd, sc->tx_ring_cnt);
1474 ifp->if_mapsubq = ifq_mapsubq_mask;
1475 ifq_set_subq_mask(&ifp->if_snd, 0);
1477 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1479 ifp->if_capabilities =
1480 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_TSO;
1481 if (IGB_ENABLE_HWRSS(sc))
1482 ifp->if_capabilities |= IFCAP_RSS;
1483 ifp->if_capenable = ifp->if_capabilities;
1484 ifp->if_hwassist = IGB_CSUM_FEATURES | CSUM_TSO;
1487 * Tell the upper layer(s) we support long frames
1489 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1492 * Specify the media types supported by this adapter and register
1493 * callbacks to update media and link information
1495 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1496 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1497 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1498 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1500 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1502 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1503 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1505 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1506 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1508 if (sc->hw.phy.type != e1000_phy_ife) {
1509 ifmedia_add(&sc->media,
1510 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1511 ifmedia_add(&sc->media,
1512 IFM_ETHER | IFM_1000_T, 0, NULL);
1515 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1516 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1520 igb_add_sysctl(struct igb_softc *sc)
1525 sysctl_ctx_init(&sc->sysctl_ctx);
1526 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1527 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1528 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1529 if (sc->sysctl_tree == NULL) {
1530 device_printf(sc->dev, "can't add sysctl node\n");
1534 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1535 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1536 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1537 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1538 "# of RX rings used");
1539 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1540 OID_AUTO, "txr", CTLFLAG_RD, &sc->tx_ring_cnt, 0, "# of TX rings");
1541 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1542 OID_AUTO, "txr_inuse", CTLFLAG_RD, &sc->tx_ring_inuse, 0,
1543 "# of TX rings used");
1544 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1545 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1547 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1548 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1551 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
1552 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1553 SYSCTL_CHILDREN(sc->sysctl_tree),
1554 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1555 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1557 for (i = 0; i < sc->msix_cnt; ++i) {
1558 struct igb_msix_data *msix = &sc->msix_data[i];
1560 ksnprintf(node, sizeof(node), "msix%d_rate", i);
1561 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1562 SYSCTL_CHILDREN(sc->sysctl_tree),
1563 OID_AUTO, node, CTLTYPE_INT | CTLFLAG_RW,
1564 msix, 0, igb_sysctl_msix_rate, "I",
1565 msix->msix_rate_desc);
1569 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1570 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1571 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
1572 "# of segments per TX interrupt");
1574 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1575 OID_AUTO, "tx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1576 sc, 0, igb_sysctl_tx_wreg_nsegs, "I",
1577 "# of segments sent before write to hardware register");
1579 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1580 OID_AUTO, "rx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1581 sc, 0, igb_sysctl_rx_wreg_nsegs, "I",
1582 "# of segments received before write to hardware register");
1584 #ifdef IFPOLL_ENABLE
1585 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1586 OID_AUTO, "npoll_rxoff", CTLTYPE_INT|CTLFLAG_RW,
1587 sc, 0, igb_sysctl_npoll_rxoff, "I", "NPOLLING RX cpu offset");
1588 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1589 OID_AUTO, "npoll_txoff", CTLTYPE_INT|CTLFLAG_RW,
1590 sc, 0, igb_sysctl_npoll_txoff, "I", "NPOLLING TX cpu offset");
1593 #ifdef IGB_RSS_DEBUG
1594 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1595 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1597 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1598 ksnprintf(node, sizeof(node), "rx%d_pkt", i);
1599 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1600 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
1601 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1604 #ifdef IGB_TSS_DEBUG
1605 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1606 ksnprintf(node, sizeof(node), "tx%d_pkt", i);
1607 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1608 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
1609 CTLFLAG_RW, &sc->tx_rings[i].tx_packets, "TXed packets");
1615 igb_alloc_rings(struct igb_softc *sc)
1620 * Create top level busdma tag
1622 error = bus_dma_tag_create(NULL, 1, 0,
1623 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1624 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1627 device_printf(sc->dev, "could not create top level DMA tag\n");
1632 * Allocate TX descriptor rings and buffers
1634 sc->tx_rings = kmalloc_cachealign(
1635 sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1636 M_DEVBUF, M_WAITOK | M_ZERO);
1637 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1638 struct igb_tx_ring *txr = &sc->tx_rings[i];
1640 /* Set up some basics */
1643 lwkt_serialize_init(&txr->tx_serialize);
1645 error = igb_create_tx_ring(txr);
1651 * Allocate RX descriptor rings and buffers
1653 sc->rx_rings = kmalloc_cachealign(
1654 sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1655 M_DEVBUF, M_WAITOK | M_ZERO);
1656 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1657 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1659 /* Set up some basics */
1662 lwkt_serialize_init(&rxr->rx_serialize);
1664 error = igb_create_rx_ring(rxr);
1673 igb_free_rings(struct igb_softc *sc)
1677 if (sc->tx_rings != NULL) {
1678 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1679 struct igb_tx_ring *txr = &sc->tx_rings[i];
1681 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1683 kfree(sc->tx_rings, M_DEVBUF);
1686 if (sc->rx_rings != NULL) {
1687 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1688 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1690 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1692 kfree(sc->rx_rings, M_DEVBUF);
1697 igb_create_tx_ring(struct igb_tx_ring *txr)
1699 int tsize, error, i, ntxd;
1702 * Validate number of transmit descriptors. It must not exceed
1703 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1705 ntxd = device_getenv_int(txr->sc->dev, "txd", igb_txd);
1706 if ((ntxd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN != 0 ||
1707 ntxd > IGB_MAX_TXD || ntxd < IGB_MIN_TXD) {
1708 device_printf(txr->sc->dev,
1709 "Using %d TX descriptors instead of %d!\n",
1710 IGB_DEFAULT_TXD, ntxd);
1711 txr->num_tx_desc = IGB_DEFAULT_TXD;
1713 txr->num_tx_desc = ntxd;
1717 * Allocate TX descriptor ring
1719 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1721 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1722 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1723 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1724 if (txr->txdma.dma_vaddr == NULL) {
1725 device_printf(txr->sc->dev,
1726 "Unable to allocate TX Descriptor memory\n");
1729 txr->tx_base = txr->txdma.dma_vaddr;
1730 bzero(txr->tx_base, tsize);
1732 tsize = __VM_CACHELINE_ALIGN(
1733 sizeof(struct igb_tx_buf) * txr->num_tx_desc);
1734 txr->tx_buf = kmalloc_cachealign(tsize, M_DEVBUF, M_WAITOK | M_ZERO);
1737 * Allocate TX head write-back buffer
1739 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1740 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1741 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1742 if (txr->tx_hdr == NULL) {
1743 device_printf(txr->sc->dev,
1744 "Unable to allocate TX head write-back buffer\n");
1749 * Create DMA tag for TX buffers
1751 error = bus_dma_tag_create(txr->sc->parent_tag,
1752 1, 0, /* alignment, bounds */
1753 BUS_SPACE_MAXADDR, /* lowaddr */
1754 BUS_SPACE_MAXADDR, /* highaddr */
1755 NULL, NULL, /* filter, filterarg */
1756 IGB_TSO_SIZE, /* maxsize */
1757 IGB_MAX_SCATTER, /* nsegments */
1758 PAGE_SIZE, /* maxsegsize */
1759 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1760 BUS_DMA_ONEBPAGE, /* flags */
1763 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1764 kfree(txr->tx_buf, M_DEVBUF);
1770 * Create DMA maps for TX buffers
1772 for (i = 0; i < txr->num_tx_desc; ++i) {
1773 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1775 error = bus_dmamap_create(txr->tx_tag,
1776 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1778 device_printf(txr->sc->dev,
1779 "Unable to create TX DMA map\n");
1780 igb_destroy_tx_ring(txr, i);
1785 if (txr->sc->hw.mac.type == e1000_82575)
1786 txr->tx_flags |= IGB_TXFLAG_TSO_IPLEN0;
1789 * Initialize various watermark
1791 txr->spare_desc = IGB_TX_SPARE;
1792 txr->intr_nsegs = txr->num_tx_desc / 16;
1793 txr->wreg_nsegs = IGB_DEF_TXWREG_NSEGS;
1794 txr->oact_hi_desc = txr->num_tx_desc / 2;
1795 txr->oact_lo_desc = txr->num_tx_desc / 8;
1796 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1797 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1798 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1799 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1805 igb_free_tx_ring(struct igb_tx_ring *txr)
1809 for (i = 0; i < txr->num_tx_desc; ++i) {
1810 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1812 if (txbuf->m_head != NULL) {
1813 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1814 m_freem(txbuf->m_head);
1815 txbuf->m_head = NULL;
1821 igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1825 if (txr->txdma.dma_vaddr != NULL) {
1826 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1827 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1828 txr->txdma.dma_map);
1829 bus_dma_tag_destroy(txr->txdma.dma_tag);
1830 txr->txdma.dma_vaddr = NULL;
1833 if (txr->tx_hdr != NULL) {
1834 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1835 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1837 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1841 if (txr->tx_buf == NULL)
1844 for (i = 0; i < ndesc; ++i) {
1845 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1847 KKASSERT(txbuf->m_head == NULL);
1848 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1850 bus_dma_tag_destroy(txr->tx_tag);
1852 kfree(txr->tx_buf, M_DEVBUF);
1857 igb_init_tx_ring(struct igb_tx_ring *txr)
1859 /* Clear the old descriptor contents */
1861 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1863 /* Clear TX head write-back buffer */
1867 txr->next_avail_desc = 0;
1868 txr->next_to_clean = 0;
1871 /* Set number of descriptors available */
1872 txr->tx_avail = txr->num_tx_desc;
1874 /* Enable this TX ring */
1875 txr->tx_flags |= IGB_TXFLAG_ENABLED;
1879 igb_init_tx_unit(struct igb_softc *sc)
1881 struct e1000_hw *hw = &sc->hw;
1885 /* Setup the Tx Descriptor Rings */
1886 for (i = 0; i < sc->tx_ring_inuse; ++i) {
1887 struct igb_tx_ring *txr = &sc->tx_rings[i];
1888 uint64_t bus_addr = txr->txdma.dma_paddr;
1889 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1890 uint32_t txdctl = 0;
1891 uint32_t dca_txctrl;
1893 E1000_WRITE_REG(hw, E1000_TDLEN(i),
1894 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1895 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1896 (uint32_t)(bus_addr >> 32));
1897 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1898 (uint32_t)bus_addr);
1900 /* Setup the HW Tx Head and Tail descriptor pointers */
1901 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1902 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1904 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1905 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1906 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1909 * Don't set WB_on_EITR:
1910 * - 82575 does not have it
1911 * - It almost has no effect on 82576, see:
1912 * 82576 specification update errata #26
1913 * - It causes unnecessary bus traffic
1915 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
1916 (uint32_t)(hdr_paddr >> 32));
1917 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
1918 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1921 * WTHRESH is ignored by the hardware, since header
1922 * write back mode is used.
1924 txdctl |= IGB_TX_PTHRESH;
1925 txdctl |= IGB_TX_HTHRESH << 8;
1926 txdctl |= IGB_TX_WTHRESH << 16;
1927 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1928 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
1934 e1000_config_collision_dist(hw);
1936 /* Program the Transmit Control Register */
1937 tctl = E1000_READ_REG(hw, E1000_TCTL);
1938 tctl &= ~E1000_TCTL_CT;
1939 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1940 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1942 /* This write will effectively turn on the transmit unit. */
1943 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1947 igb_txcsum_ctx(struct igb_tx_ring *txr, struct mbuf *mp)
1949 struct e1000_adv_tx_context_desc *TXD;
1950 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1951 int ehdrlen, ctxd, ip_hlen = 0;
1952 boolean_t offload = TRUE;
1954 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1957 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
1959 ctxd = txr->next_avail_desc;
1960 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1963 * In advanced descriptors the vlan tag must
1964 * be placed into the context descriptor, thus
1965 * we need to be here just for that setup.
1967 if (mp->m_flags & M_VLANTAG) {
1970 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1971 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1972 } else if (!offload) {
1976 ehdrlen = mp->m_pkthdr.csum_lhlen;
1977 KASSERT(ehdrlen > 0, ("invalid ether hlen"));
1979 /* Set the ether header length */
1980 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
1981 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
1982 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1983 ip_hlen = mp->m_pkthdr.csum_iphlen;
1984 KASSERT(ip_hlen > 0, ("invalid ip hlen"));
1986 vlan_macip_lens |= ip_hlen;
1988 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1989 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1990 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1991 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1992 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1994 /* 82575 needs the queue index added */
1995 if (txr->sc->hw.mac.type == e1000_82575)
1996 mss_l4len_idx = txr->me << 4;
1998 /* Now copy bits into descriptor */
1999 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
2000 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
2001 TXD->seqnum_seed = htole32(0);
2002 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
2004 /* We've consumed the first desc, adjust counters */
2005 if (++ctxd == txr->num_tx_desc)
2007 txr->next_avail_desc = ctxd;
2014 igb_txeof(struct igb_tx_ring *txr)
2016 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
2017 int first, hdr, avail;
2019 if (txr->tx_avail == txr->num_tx_desc)
2022 first = txr->next_to_clean;
2023 hdr = *(txr->tx_hdr);
2028 avail = txr->tx_avail;
2029 while (first != hdr) {
2030 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
2033 if (txbuf->m_head) {
2034 bus_dmamap_unload(txr->tx_tag, txbuf->map);
2035 m_freem(txbuf->m_head);
2036 txbuf->m_head = NULL;
2039 if (++first == txr->num_tx_desc)
2042 txr->next_to_clean = first;
2043 txr->tx_avail = avail;
2046 * If we have a minimum free, clear OACTIVE
2047 * to tell the stack that it is OK to send packets.
2049 if (IGB_IS_NOT_OACTIVE(txr)) {
2050 ifsq_clr_oactive(txr->ifsq);
2053 * We have enough TX descriptors, turn off
2054 * the watchdog. We allow small amount of
2055 * packets (roughly intr_nsegs) pending on
2056 * the transmit ring.
2058 txr->tx_watchdog.wd_timer = 0;
2063 igb_create_rx_ring(struct igb_rx_ring *rxr)
2065 int rsize, i, error, nrxd;
2068 * Validate number of receive descriptors. It must not exceed
2069 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
2071 nrxd = device_getenv_int(rxr->sc->dev, "rxd", igb_rxd);
2072 if ((nrxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN != 0 ||
2073 nrxd > IGB_MAX_RXD || nrxd < IGB_MIN_RXD) {
2074 device_printf(rxr->sc->dev,
2075 "Using %d RX descriptors instead of %d!\n",
2076 IGB_DEFAULT_RXD, nrxd);
2077 rxr->num_rx_desc = IGB_DEFAULT_RXD;
2079 rxr->num_rx_desc = nrxd;
2083 * Allocate RX descriptor ring
2085 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
2087 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
2088 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
2089 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
2090 &rxr->rxdma.dma_paddr);
2091 if (rxr->rxdma.dma_vaddr == NULL) {
2092 device_printf(rxr->sc->dev,
2093 "Unable to allocate RxDescriptor memory\n");
2096 rxr->rx_base = rxr->rxdma.dma_vaddr;
2097 bzero(rxr->rx_base, rsize);
2099 rsize = __VM_CACHELINE_ALIGN(
2100 sizeof(struct igb_rx_buf) * rxr->num_rx_desc);
2101 rxr->rx_buf = kmalloc_cachealign(rsize, M_DEVBUF, M_WAITOK | M_ZERO);
2104 * Create DMA tag for RX buffers
2106 error = bus_dma_tag_create(rxr->sc->parent_tag,
2107 1, 0, /* alignment, bounds */
2108 BUS_SPACE_MAXADDR, /* lowaddr */
2109 BUS_SPACE_MAXADDR, /* highaddr */
2110 NULL, NULL, /* filter, filterarg */
2111 MCLBYTES, /* maxsize */
2113 MCLBYTES, /* maxsegsize */
2114 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2117 device_printf(rxr->sc->dev,
2118 "Unable to create RX payload DMA tag\n");
2119 kfree(rxr->rx_buf, M_DEVBUF);
2125 * Create spare DMA map for RX buffers
2127 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2130 device_printf(rxr->sc->dev,
2131 "Unable to create spare RX DMA maps\n");
2132 bus_dma_tag_destroy(rxr->rx_tag);
2133 kfree(rxr->rx_buf, M_DEVBUF);
2139 * Create DMA maps for RX buffers
2141 for (i = 0; i < rxr->num_rx_desc; i++) {
2142 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2144 error = bus_dmamap_create(rxr->rx_tag,
2145 BUS_DMA_WAITOK, &rxbuf->map);
2147 device_printf(rxr->sc->dev,
2148 "Unable to create RX DMA maps\n");
2149 igb_destroy_rx_ring(rxr, i);
2155 * Initialize various watermark
2157 rxr->wreg_nsegs = IGB_DEF_RXWREG_NSEGS;
2163 igb_free_rx_ring(struct igb_rx_ring *rxr)
2167 for (i = 0; i < rxr->num_rx_desc; ++i) {
2168 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2170 if (rxbuf->m_head != NULL) {
2171 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2172 m_freem(rxbuf->m_head);
2173 rxbuf->m_head = NULL;
2177 if (rxr->fmp != NULL)
2184 igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2188 if (rxr->rxdma.dma_vaddr != NULL) {
2189 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2190 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2191 rxr->rxdma.dma_map);
2192 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2193 rxr->rxdma.dma_vaddr = NULL;
2196 if (rxr->rx_buf == NULL)
2199 for (i = 0; i < ndesc; ++i) {
2200 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2202 KKASSERT(rxbuf->m_head == NULL);
2203 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2205 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2206 bus_dma_tag_destroy(rxr->rx_tag);
2208 kfree(rxr->rx_buf, M_DEVBUF);
2213 igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2215 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2216 rxd->wb.upper.status_error = 0;
2220 igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2223 bus_dma_segment_t seg;
2225 struct igb_rx_buf *rxbuf;
2228 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2231 if_printf(&rxr->sc->arpcom.ac_if,
2232 "Unable to allocate RX mbuf\n");
2236 m->m_len = m->m_pkthdr.len = MCLBYTES;
2238 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2239 m_adj(m, ETHER_ALIGN);
2241 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2242 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2246 if_printf(&rxr->sc->arpcom.ac_if,
2247 "Unable to load RX mbuf\n");
2252 rxbuf = &rxr->rx_buf[i];
2253 if (rxbuf->m_head != NULL)
2254 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2257 rxbuf->map = rxr->rx_sparemap;
2258 rxr->rx_sparemap = map;
2261 rxbuf->paddr = seg.ds_addr;
2263 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2268 igb_init_rx_ring(struct igb_rx_ring *rxr)
2272 /* Clear the ring contents */
2274 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
2276 /* Now replenish the ring mbufs */
2277 for (i = 0; i < rxr->num_rx_desc; ++i) {
2280 error = igb_newbuf(rxr, i, TRUE);
2285 /* Setup our descriptor indices */
2286 rxr->next_to_check = 0;
2290 rxr->discard = FALSE;
2296 igb_init_rx_unit(struct igb_softc *sc)
2298 struct ifnet *ifp = &sc->arpcom.ac_if;
2299 struct e1000_hw *hw = &sc->hw;
2300 uint32_t rctl, rxcsum, srrctl = 0;
2304 * Make sure receives are disabled while setting
2305 * up the descriptor ring
2307 rctl = E1000_READ_REG(hw, E1000_RCTL);
2308 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2312 ** Set up for header split
2314 if (igb_header_split) {
2315 /* Use a standard mbuf for the header */
2316 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2317 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2320 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2323 ** Set up for jumbo frames
2325 if (ifp->if_mtu > ETHERMTU) {
2326 rctl |= E1000_RCTL_LPE;
2328 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2329 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2330 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2331 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2332 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2333 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2335 /* Set maximum packet len */
2336 psize = adapter->max_frame_size;
2337 /* are we on a vlan? */
2338 if (adapter->ifp->if_vlantrunk != NULL)
2339 psize += VLAN_TAG_SIZE;
2340 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2342 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2343 rctl |= E1000_RCTL_SZ_2048;
2346 rctl &= ~E1000_RCTL_LPE;
2347 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2348 rctl |= E1000_RCTL_SZ_2048;
2351 /* Setup the Base and Length of the Rx Descriptor Rings */
2352 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2353 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2354 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2357 E1000_WRITE_REG(hw, E1000_RDLEN(i),
2358 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
2359 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2360 (uint32_t)(bus_addr >> 32));
2361 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2362 (uint32_t)bus_addr);
2363 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2364 /* Enable this Queue */
2365 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2366 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2367 rxdctl &= 0xFFF00000;
2368 rxdctl |= IGB_RX_PTHRESH;
2369 rxdctl |= IGB_RX_HTHRESH << 8;
2371 * Don't set WTHRESH to a value above 1 on 82576, see:
2372 * 82576 specification update errata #26
2374 rxdctl |= IGB_RX_WTHRESH << 16;
2375 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2378 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2379 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2382 * Receive Checksum Offload for TCP and UDP
2384 * Checksum offloading is also enabled if multiple receive
2385 * queue is to be supported, since we need it to figure out
2388 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2391 * PCSD must be enabled to enable multiple
2394 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2397 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2400 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2402 if (IGB_ENABLE_HWRSS(sc)) {
2403 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
2404 uint32_t reta_shift;
2409 * When we reach here, RSS has already been disabled
2410 * in igb_stop(), so we could safely configure RSS key
2411 * and redirect table.
2417 toeplitz_get_key(key, sizeof(key));
2418 for (i = 0; i < IGB_NRSSRK; ++i) {
2421 rssrk = IGB_RSSRK_VAL(key, i);
2422 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2424 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
2428 * Configure RSS redirect table in following fashion:
2429 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2431 reta_shift = IGB_RETA_SHIFT;
2432 if (hw->mac.type == e1000_82575)
2433 reta_shift = IGB_RETA_SHIFT_82575;
2436 for (j = 0; j < IGB_NRETA; ++j) {
2439 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2442 q = (r % sc->rx_ring_inuse) << reta_shift;
2443 reta |= q << (8 * i);
2446 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2447 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2451 * Enable multiple receive queues.
2452 * Enable IPv4 RSS standard hash functions.
2453 * Disable RSS interrupt on 82575
2455 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2456 E1000_MRQC_ENABLE_RSS_4Q |
2457 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2458 E1000_MRQC_RSS_FIELD_IPV4);
2461 /* Setup the Receive Control Register */
2462 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2463 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2464 E1000_RCTL_RDMTS_HALF |
2465 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2466 /* Strip CRC bytes. */
2467 rctl |= E1000_RCTL_SECRC;
2468 /* Make sure VLAN Filters are off */
2469 rctl &= ~E1000_RCTL_VFE;
2470 /* Don't store bad packets */
2471 rctl &= ~E1000_RCTL_SBP;
2473 /* Enable Receives */
2474 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2477 * Setup the HW Rx Head and Tail Descriptor Pointers
2478 * - needs to be after enable
2480 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2481 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2483 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
2484 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
2489 igb_rx_refresh(struct igb_rx_ring *rxr, int i)
2492 i = rxr->num_rx_desc - 1;
2493 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2497 igb_rxeof(struct igb_rx_ring *rxr, int count)
2499 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2500 union e1000_adv_rx_desc *cur;
2504 i = rxr->next_to_check;
2505 cur = &rxr->rx_base[i];
2506 staterr = le32toh(cur->wb.upper.status_error);
2508 if ((staterr & E1000_RXD_STAT_DD) == 0)
2511 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
2512 struct pktinfo *pi = NULL, pi0;
2513 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2514 struct mbuf *m = NULL;
2517 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2522 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2524 struct mbuf *mp = rxbuf->m_head;
2525 uint32_t hash, hashtype;
2529 len = le16toh(cur->wb.upper.length);
2530 if (rxr->sc->hw.mac.type == e1000_i350 &&
2531 (staterr & E1000_RXDEXT_STATERR_LB))
2532 vlan = be16toh(cur->wb.upper.vlan);
2534 vlan = le16toh(cur->wb.upper.vlan);
2536 hash = le32toh(cur->wb.lower.hi_dword.rss);
2537 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2538 E1000_RXDADV_RSSTYPE_MASK;
2540 IGB_RSS_DPRINTF(rxr->sc, 10,
2541 "ring%d, hash 0x%08x, hashtype %u\n",
2542 rxr->me, hash, hashtype);
2544 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2545 BUS_DMASYNC_POSTREAD);
2547 if (igb_newbuf(rxr, i, FALSE) != 0) {
2553 if (rxr->fmp == NULL) {
2554 mp->m_pkthdr.len = len;
2558 rxr->lmp->m_next = mp;
2559 rxr->lmp = rxr->lmp->m_next;
2560 rxr->fmp->m_pkthdr.len += len;
2568 m->m_pkthdr.rcvif = ifp;
2571 if (ifp->if_capenable & IFCAP_RXCSUM)
2572 igb_rxcsum(staterr, m);
2574 if (staterr & E1000_RXD_STAT_VP) {
2575 m->m_pkthdr.ether_vlantag = vlan;
2576 m->m_flags |= M_VLANTAG;
2579 if (ifp->if_capenable & IFCAP_RSS) {
2580 pi = igb_rssinfo(m, &pi0,
2581 hash, hashtype, staterr);
2583 #ifdef IGB_RSS_DEBUG
2590 igb_setup_rxdesc(cur, rxbuf);
2592 rxr->discard = TRUE;
2594 rxr->discard = FALSE;
2595 if (rxr->fmp != NULL) {
2604 ether_input_pkt(ifp, m, pi);
2606 /* Advance our pointers to the next descriptor. */
2607 if (++i == rxr->num_rx_desc)
2610 if (ncoll >= rxr->wreg_nsegs) {
2611 igb_rx_refresh(rxr, i);
2615 cur = &rxr->rx_base[i];
2616 staterr = le32toh(cur->wb.upper.status_error);
2618 rxr->next_to_check = i;
2621 igb_rx_refresh(rxr, i);
2626 igb_set_vlan(struct igb_softc *sc)
2628 struct e1000_hw *hw = &sc->hw;
2631 struct ifnet *ifp = sc->arpcom.ac_if;
2635 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2639 reg = E1000_READ_REG(hw, E1000_CTRL);
2640 reg |= E1000_CTRL_VME;
2641 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2644 /* Enable the Filter Table */
2645 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2646 reg = E1000_READ_REG(hw, E1000_RCTL);
2647 reg &= ~E1000_RCTL_CFIEN;
2648 reg |= E1000_RCTL_VFE;
2649 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2653 /* Update the frame size */
2654 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2655 sc->max_frame_size + VLAN_TAG_SIZE);
2658 /* Don't bother with table if no vlans */
2659 if ((adapter->num_vlans == 0) ||
2660 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2663 ** A soft reset zero's out the VFTA, so
2664 ** we need to repopulate it now.
2666 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2667 if (adapter->shadow_vfta[i] != 0) {
2668 if (adapter->vf_ifp)
2669 e1000_vfta_set_vf(hw,
2670 adapter->shadow_vfta[i], TRUE);
2672 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2673 i, adapter->shadow_vfta[i]);
2679 igb_enable_intr(struct igb_softc *sc)
2681 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2682 lwkt_serialize_handler_enable(&sc->main_serialize);
2686 for (i = 0; i < sc->msix_cnt; ++i) {
2687 lwkt_serialize_handler_enable(
2688 sc->msix_data[i].msix_serialize);
2692 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2693 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
2694 E1000_WRITE_REG(&sc->hw, E1000_EIAC, sc->intr_mask);
2696 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2697 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2698 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2699 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2701 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2703 E1000_WRITE_FLUSH(&sc->hw);
2707 igb_disable_intr(struct igb_softc *sc)
2709 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2710 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2711 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2713 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2714 E1000_WRITE_FLUSH(&sc->hw);
2716 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2717 lwkt_serialize_handler_disable(&sc->main_serialize);
2721 for (i = 0; i < sc->msix_cnt; ++i) {
2722 lwkt_serialize_handler_disable(
2723 sc->msix_data[i].msix_serialize);
2729 * Bit of a misnomer, what this really means is
2730 * to enable OS management of the system... aka
2731 * to disable special hardware management features
2734 igb_get_mgmt(struct igb_softc *sc)
2736 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2737 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2738 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2740 /* disable hardware interception of ARP */
2741 manc &= ~E1000_MANC_ARP_EN;
2743 /* enable receiving management packets to the host */
2744 manc |= E1000_MANC_EN_MNG2HOST;
2745 manc2h |= 1 << 5; /* Mng Port 623 */
2746 manc2h |= 1 << 6; /* Mng Port 664 */
2747 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2748 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2753 * Give control back to hardware management controller
2757 igb_rel_mgmt(struct igb_softc *sc)
2759 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2760 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2762 /* Re-enable hardware interception of ARP */
2763 manc |= E1000_MANC_ARP_EN;
2764 manc &= ~E1000_MANC_EN_MNG2HOST;
2766 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2771 * Sets CTRL_EXT:DRV_LOAD bit.
2773 * For ASF and Pass Through versions of f/w this means that
2774 * the driver is loaded.
2777 igb_get_hw_control(struct igb_softc *sc)
2784 /* Let firmware know the driver has taken over */
2785 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2786 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2787 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2791 * Resets CTRL_EXT:DRV_LOAD bit.
2793 * For ASF and Pass Through versions of f/w this means that the
2794 * driver is no longer loaded.
2797 igb_rel_hw_control(struct igb_softc *sc)
2804 /* Let firmware taken over control of h/w */
2805 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2806 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2807 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2811 igb_is_valid_ether_addr(const uint8_t *addr)
2813 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2815 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2821 * Enable PCI Wake On Lan capability
2824 igb_enable_wol(device_t dev)
2826 uint16_t cap, status;
2829 /* First find the capabilities pointer*/
2830 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2832 /* Read the PM Capabilities */
2833 id = pci_read_config(dev, cap, 1);
2834 if (id != PCIY_PMG) /* Something wrong */
2838 * OK, we have the power capabilities,
2839 * so now get the status register
2841 cap += PCIR_POWER_STATUS;
2842 status = pci_read_config(dev, cap, 2);
2843 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2844 pci_write_config(dev, cap, status, 2);
2848 igb_update_stats_counters(struct igb_softc *sc)
2850 struct e1000_hw *hw = &sc->hw;
2851 struct e1000_hw_stats *stats;
2852 struct ifnet *ifp = &sc->arpcom.ac_if;
2855 * The virtual function adapter has only a
2856 * small controlled set of stats, do only
2860 igb_update_vf_stats_counters(sc);
2865 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2866 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2868 E1000_READ_REG(hw,E1000_SYMERRS);
2869 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2872 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2873 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2874 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2875 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2877 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2878 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2879 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2880 stats->dc += E1000_READ_REG(hw, E1000_DC);
2881 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2882 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2883 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2886 * For watchdog management we need to know if we have been
2887 * paused during the last interval, so capture that here.
2889 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2890 stats->xoffrxc += sc->pause_frames;
2891 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2892 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2893 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2894 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2895 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2896 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2897 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2898 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2899 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2900 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2901 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2902 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2904 /* For the 64-bit byte counters the low dword must be read first. */
2905 /* Both registers clear on the read of the high dword */
2907 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2908 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2909 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2910 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2912 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2913 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2914 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2915 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2916 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2918 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2919 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2921 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2922 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2923 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2924 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2925 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2926 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2927 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2928 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2929 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2930 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2932 /* Interrupt Counts */
2934 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2935 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2936 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2937 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2938 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2939 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2940 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2941 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2942 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2944 /* Host to Card Statistics */
2946 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2947 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2948 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2949 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2950 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2951 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2952 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2953 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2954 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2955 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2956 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2957 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2958 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2959 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2961 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2962 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2963 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2964 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2965 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2966 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2968 ifp->if_collisions = stats->colc;
2971 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2972 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2975 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2977 /* Driver specific counters */
2978 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2979 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2980 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2981 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2982 sc->packet_buf_alloc_tx =
2983 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2984 sc->packet_buf_alloc_rx =
2985 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2989 igb_vf_init_stats(struct igb_softc *sc)
2991 struct e1000_hw *hw = &sc->hw;
2992 struct e1000_vf_stats *stats;
2995 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2996 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2997 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2998 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2999 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
3003 igb_update_vf_stats_counters(struct igb_softc *sc)
3005 struct e1000_hw *hw = &sc->hw;
3006 struct e1000_vf_stats *stats;
3008 if (sc->link_speed == 0)
3012 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
3013 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
3014 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
3015 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
3016 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
3019 #ifdef IFPOLL_ENABLE
3022 igb_npoll_status(struct ifnet *ifp)
3024 struct igb_softc *sc = ifp->if_softc;
3027 ASSERT_SERIALIZED(&sc->main_serialize);
3029 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3030 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3031 sc->hw.mac.get_link_status = 1;
3032 igb_update_link_status(sc);
3037 igb_npoll_tx(struct ifnet *ifp, void *arg, int cycle __unused)
3039 struct igb_tx_ring *txr = arg;
3041 ASSERT_SERIALIZED(&txr->tx_serialize);
3044 if (!ifsq_is_empty(txr->ifsq))
3045 ifsq_devstart(txr->ifsq);
3049 igb_npoll_rx(struct ifnet *ifp __unused, void *arg, int cycle)
3051 struct igb_rx_ring *rxr = arg;
3053 ASSERT_SERIALIZED(&rxr->rx_serialize);
3055 igb_rxeof(rxr, cycle);
3059 igb_npoll(struct ifnet *ifp, struct ifpoll_info *info)
3061 struct igb_softc *sc = ifp->if_softc;
3062 int i, txr_cnt, rxr_cnt;
3064 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3069 info->ifpi_status.status_func = igb_npoll_status;
3070 info->ifpi_status.serializer = &sc->main_serialize;
3072 txr_cnt = igb_get_txring_inuse(sc, TRUE);
3073 off = sc->tx_npoll_off;
3074 for (i = 0; i < txr_cnt; ++i) {
3075 struct igb_tx_ring *txr = &sc->tx_rings[i];
3078 KKASSERT(idx < ncpus2);
3079 info->ifpi_tx[idx].poll_func = igb_npoll_tx;
3080 info->ifpi_tx[idx].arg = txr;
3081 info->ifpi_tx[idx].serializer = &txr->tx_serialize;
3082 ifsq_set_cpuid(txr->ifsq, idx);
3085 rxr_cnt = igb_get_rxring_inuse(sc, TRUE);
3086 off = sc->rx_npoll_off;
3087 for (i = 0; i < rxr_cnt; ++i) {
3088 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3091 KKASSERT(idx < ncpus2);
3092 info->ifpi_rx[idx].poll_func = igb_npoll_rx;
3093 info->ifpi_rx[idx].arg = rxr;
3094 info->ifpi_rx[idx].serializer = &rxr->rx_serialize;
3097 if (ifp->if_flags & IFF_RUNNING) {
3098 if (rxr_cnt == sc->rx_ring_inuse &&
3099 txr_cnt == sc->tx_ring_inuse)
3100 igb_disable_intr(sc);
3105 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3106 struct igb_tx_ring *txr = &sc->tx_rings[i];
3108 ifsq_set_cpuid(txr->ifsq, txr->tx_intr_cpuid);
3111 if (ifp->if_flags & IFF_RUNNING) {
3112 txr_cnt = igb_get_txring_inuse(sc, FALSE);
3113 rxr_cnt = igb_get_rxring_inuse(sc, FALSE);
3115 if (rxr_cnt == sc->rx_ring_inuse &&
3116 txr_cnt == sc->tx_ring_inuse)
3117 igb_enable_intr(sc);
3124 #endif /* IFPOLL_ENABLE */
3129 struct igb_softc *sc = xsc;
3130 struct ifnet *ifp = &sc->arpcom.ac_if;
3133 ASSERT_SERIALIZED(&sc->main_serialize);
3135 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
3140 if (ifp->if_flags & IFF_RUNNING) {
3141 struct igb_tx_ring *txr = &sc->tx_rings[0];
3144 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3145 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3147 if (eicr & rxr->rx_intr_mask) {
3148 lwkt_serialize_enter(&rxr->rx_serialize);
3150 lwkt_serialize_exit(&rxr->rx_serialize);
3154 if (eicr & txr->tx_intr_mask) {
3155 lwkt_serialize_enter(&txr->tx_serialize);
3157 if (!ifsq_is_empty(txr->ifsq))
3158 ifsq_devstart(txr->ifsq);
3159 lwkt_serialize_exit(&txr->tx_serialize);
3163 if (eicr & E1000_EICR_OTHER) {
3164 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3166 /* Link status change */
3167 if (icr & E1000_ICR_LSC) {
3168 sc->hw.mac.get_link_status = 1;
3169 igb_update_link_status(sc);
3174 * Reading EICR has the side effect to clear interrupt mask,
3175 * so all interrupts need to be enabled here.
3177 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
3181 igb_intr_shared(void *xsc)
3183 struct igb_softc *sc = xsc;
3184 struct ifnet *ifp = &sc->arpcom.ac_if;
3187 ASSERT_SERIALIZED(&sc->main_serialize);
3189 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3192 if (reg_icr == 0xffffffff)
3195 /* Definitely not our interrupt. */
3199 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3202 if (ifp->if_flags & IFF_RUNNING) {
3204 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3207 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3208 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3210 lwkt_serialize_enter(&rxr->rx_serialize);
3212 lwkt_serialize_exit(&rxr->rx_serialize);
3216 if (reg_icr & E1000_ICR_TXDW) {
3217 struct igb_tx_ring *txr = &sc->tx_rings[0];
3219 lwkt_serialize_enter(&txr->tx_serialize);
3221 if (!ifsq_is_empty(txr->ifsq))
3222 ifsq_devstart(txr->ifsq);
3223 lwkt_serialize_exit(&txr->tx_serialize);
3227 /* Link status change */
3228 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3229 sc->hw.mac.get_link_status = 1;
3230 igb_update_link_status(sc);
3233 if (reg_icr & E1000_ICR_RXO)
3238 igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp,
3239 int *segs_used, int *idx)
3241 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3243 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3244 union e1000_adv_tx_desc *txd = NULL;
3245 struct mbuf *m_head = *m_headp;
3246 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3247 int maxsegs, nsegs, i, j, error;
3248 uint32_t hdrlen = 0;
3250 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3251 error = igb_tso_pullup(txr, m_headp);
3257 /* Set basic descriptor constants */
3258 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3259 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3260 if (m_head->m_flags & M_VLANTAG)
3261 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3264 * Map the packet for DMA.
3266 tx_buf = &txr->tx_buf[txr->next_avail_desc];
3267 tx_buf_mapped = tx_buf;
3270 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3271 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
3272 if (maxsegs > IGB_MAX_SCATTER)
3273 maxsegs = IGB_MAX_SCATTER;
3275 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3276 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3278 if (error == ENOBUFS)
3279 txr->sc->mbuf_defrag_failed++;
3281 txr->sc->no_tx_dma_setup++;
3287 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3292 * Set up the TX context descriptor, if any hardware offloading is
3293 * needed. This includes CSUM, VLAN, and TSO. It will consume one
3296 * Unlike these chips' predecessors (em/emx), TX context descriptor
3297 * will _not_ interfere TX data fetching pipelining.
3299 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3300 igb_tso_ctx(txr, m_head, &hdrlen);
3301 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3302 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3303 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3306 } else if (igb_txcsum_ctx(txr, m_head)) {
3307 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
3308 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
3309 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3310 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
3315 *segs_used += nsegs;
3316 txr->tx_nsegs += nsegs;
3317 if (txr->tx_nsegs >= txr->intr_nsegs) {
3319 * Report Status (RS) is turned on every intr_nsegs
3320 * descriptors (roughly).
3323 cmd_rs = E1000_ADVTXD_DCMD_RS;
3326 /* Calculate payload length */
3327 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3328 << E1000_ADVTXD_PAYLEN_SHIFT);
3330 /* 82575 needs the queue index added */
3331 if (txr->sc->hw.mac.type == e1000_82575)
3332 olinfo_status |= txr->me << 4;
3334 /* Set up our transmit descriptors */
3335 i = txr->next_avail_desc;
3336 for (j = 0; j < nsegs; j++) {
3338 bus_addr_t seg_addr;
3340 tx_buf = &txr->tx_buf[i];
3341 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3342 seg_addr = segs[j].ds_addr;
3343 seg_len = segs[j].ds_len;
3345 txd->read.buffer_addr = htole64(seg_addr);
3346 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3347 txd->read.olinfo_status = htole32(olinfo_status);
3348 if (++i == txr->num_tx_desc)
3350 tx_buf->m_head = NULL;
3353 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3354 txr->next_avail_desc = i;
3355 txr->tx_avail -= nsegs;
3357 tx_buf->m_head = m_head;
3358 tx_buf_mapped->map = tx_buf->map;
3362 * Last Descriptor of Packet needs End Of Packet (EOP)
3364 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
3367 * Defer TDT updating, until enough descrptors are setup
3370 #ifdef IGB_TSS_DEBUG
3378 igb_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
3380 struct igb_softc *sc = ifp->if_softc;
3381 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3382 struct mbuf *m_head;
3383 int idx = -1, nsegs = 0;
3385 KKASSERT(txr->ifsq == ifsq);
3386 ASSERT_SERIALIZED(&txr->tx_serialize);
3388 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifsq_is_oactive(ifsq))
3391 if (!sc->link_active || (txr->tx_flags & IGB_TXFLAG_ENABLED) == 0) {
3396 if (!IGB_IS_NOT_OACTIVE(txr))
3399 while (!ifsq_is_empty(ifsq)) {
3400 if (IGB_IS_OACTIVE(txr)) {
3401 ifsq_set_oactive(ifsq);
3402 /* Set watchdog on */
3403 txr->tx_watchdog.wd_timer = 5;
3407 m_head = ifsq_dequeue(ifsq, NULL);
3411 if (igb_encap(txr, &m_head, &nsegs, &idx)) {
3416 if (nsegs >= txr->wreg_nsegs) {
3417 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3422 /* Send a copy of the frame to the BPF listener */
3423 ETHER_BPF_MTAP(ifp, m_head);
3426 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3430 igb_watchdog(struct ifaltq_subque *ifsq)
3432 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3433 struct ifnet *ifp = ifsq_get_ifp(ifsq);
3434 struct igb_softc *sc = ifp->if_softc;
3437 KKASSERT(txr->ifsq == ifsq);
3438 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3441 * If flow control has paused us since last checking
3442 * it invalidates the watchdog timing, so dont run it.
3444 if (sc->pause_frames) {
3445 sc->pause_frames = 0;
3446 txr->tx_watchdog.wd_timer = 5;
3450 if_printf(ifp, "Watchdog timeout -- resetting\n");
3451 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3452 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3453 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3454 if_printf(ifp, "TX(%d) desc avail = %d, "
3455 "Next TX to Clean = %d\n",
3456 txr->me, txr->tx_avail, txr->next_to_clean);
3459 sc->watchdog_events++;
3462 for (i = 0; i < sc->tx_ring_inuse; ++i)
3463 ifsq_devstart_sched(sc->tx_rings[i].ifsq);
3467 igb_set_eitr(struct igb_softc *sc, int idx, int rate)
3472 if (sc->hw.mac.type == e1000_82575) {
3473 eitr = 1000000000 / 256 / rate;
3476 * Document is wrong on the 2 bits left shift
3479 eitr = 1000000 / rate;
3480 eitr <<= IGB_EITR_INTVL_SHIFT;
3484 /* Don't disable it */
3485 eitr = 1 << IGB_EITR_INTVL_SHIFT;
3486 } else if (eitr > IGB_EITR_INTVL_MASK) {
3487 /* Don't allow it to be too large */
3488 eitr = IGB_EITR_INTVL_MASK;
3491 if (sc->hw.mac.type == e1000_82575)
3494 eitr |= E1000_EITR_CNT_IGNR;
3495 E1000_WRITE_REG(&sc->hw, E1000_EITR(idx), eitr);
3499 igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3501 struct igb_softc *sc = (void *)arg1;
3502 struct ifnet *ifp = &sc->arpcom.ac_if;
3503 int error, intr_rate;
3505 intr_rate = sc->intr_rate;
3506 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3507 if (error || req->newptr == NULL)
3512 ifnet_serialize_all(ifp);
3514 sc->intr_rate = intr_rate;
3515 if (ifp->if_flags & IFF_RUNNING)
3516 igb_set_eitr(sc, 0, sc->intr_rate);
3519 if_printf(ifp, "interrupt rate set to %d/sec\n", sc->intr_rate);
3521 ifnet_deserialize_all(ifp);
3527 igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS)
3529 struct igb_msix_data *msix = (void *)arg1;
3530 struct igb_softc *sc = msix->msix_sc;
3531 struct ifnet *ifp = &sc->arpcom.ac_if;
3532 int error, msix_rate;
3534 msix_rate = msix->msix_rate;
3535 error = sysctl_handle_int(oidp, &msix_rate, 0, req);
3536 if (error || req->newptr == NULL)
3541 lwkt_serialize_enter(msix->msix_serialize);
3543 msix->msix_rate = msix_rate;
3544 if (ifp->if_flags & IFF_RUNNING)
3545 igb_set_eitr(sc, msix->msix_vector, msix->msix_rate);
3548 if_printf(ifp, "%s set to %d/sec\n", msix->msix_rate_desc,
3552 lwkt_serialize_exit(msix->msix_serialize);
3558 igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3560 struct igb_softc *sc = (void *)arg1;
3561 struct ifnet *ifp = &sc->arpcom.ac_if;
3562 struct igb_tx_ring *txr = &sc->tx_rings[0];
3565 nsegs = txr->intr_nsegs;
3566 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3567 if (error || req->newptr == NULL)
3572 ifnet_serialize_all(ifp);
3574 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
3575 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3581 for (i = 0; i < sc->tx_ring_cnt; ++i)
3582 sc->tx_rings[i].intr_nsegs = nsegs;
3585 ifnet_deserialize_all(ifp);
3591 igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3593 struct igb_softc *sc = (void *)arg1;
3594 struct ifnet *ifp = &sc->arpcom.ac_if;
3595 int error, nsegs, i;
3597 nsegs = sc->rx_rings[0].wreg_nsegs;
3598 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3599 if (error || req->newptr == NULL)
3602 ifnet_serialize_all(ifp);
3603 for (i = 0; i < sc->rx_ring_cnt; ++i)
3604 sc->rx_rings[i].wreg_nsegs =nsegs;
3605 ifnet_deserialize_all(ifp);
3611 igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3613 struct igb_softc *sc = (void *)arg1;
3614 struct ifnet *ifp = &sc->arpcom.ac_if;
3615 int error, nsegs, i;
3617 nsegs = sc->tx_rings[0].wreg_nsegs;
3618 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3619 if (error || req->newptr == NULL)
3622 ifnet_serialize_all(ifp);
3623 for (i = 0; i < sc->tx_ring_cnt; ++i)
3624 sc->tx_rings[i].wreg_nsegs =nsegs;
3625 ifnet_deserialize_all(ifp);
3630 #ifdef IFPOLL_ENABLE
3633 igb_sysctl_npoll_rxoff(SYSCTL_HANDLER_ARGS)
3635 struct igb_softc *sc = (void *)arg1;
3636 struct ifnet *ifp = &sc->arpcom.ac_if;
3639 off = sc->rx_npoll_off;
3640 error = sysctl_handle_int(oidp, &off, 0, req);
3641 if (error || req->newptr == NULL)
3646 ifnet_serialize_all(ifp);
3647 if (off >= ncpus2 || off % sc->rx_ring_cnt != 0) {
3651 sc->rx_npoll_off = off;
3653 ifnet_deserialize_all(ifp);
3659 igb_sysctl_npoll_txoff(SYSCTL_HANDLER_ARGS)
3661 struct igb_softc *sc = (void *)arg1;
3662 struct ifnet *ifp = &sc->arpcom.ac_if;
3665 off = sc->tx_npoll_off;
3666 error = sysctl_handle_int(oidp, &off, 0, req);
3667 if (error || req->newptr == NULL)
3672 ifnet_serialize_all(ifp);
3673 if (off >= ncpus2 || off % sc->tx_ring_cnt != 0) {
3677 sc->tx_npoll_off = off;
3679 ifnet_deserialize_all(ifp);
3684 #endif /* IFPOLL_ENABLE */
3687 igb_init_intr(struct igb_softc *sc)
3689 igb_set_intr_mask(sc);
3691 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0)
3692 igb_init_unshared_intr(sc);
3694 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
3695 igb_set_eitr(sc, 0, sc->intr_rate);
3699 for (i = 0; i < sc->msix_cnt; ++i)
3700 igb_set_eitr(sc, i, sc->msix_data[i].msix_rate);
3705 igb_init_unshared_intr(struct igb_softc *sc)
3707 struct e1000_hw *hw = &sc->hw;
3708 const struct igb_rx_ring *rxr;
3709 const struct igb_tx_ring *txr;
3710 uint32_t ivar, index;
3714 * Enable extended mode
3716 if (sc->hw.mac.type != e1000_82575) {
3720 gpie = E1000_GPIE_NSICR;
3721 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3722 gpie |= E1000_GPIE_MSIX_MODE |
3726 E1000_WRITE_REG(hw, E1000_GPIE, gpie);
3731 switch (sc->hw.mac.type) {
3733 ivar_max = IGB_MAX_IVAR_82580;
3737 ivar_max = IGB_MAX_IVAR_I350;
3741 case e1000_vfadapt_i350:
3742 ivar_max = IGB_MAX_IVAR_VF;
3746 ivar_max = IGB_MAX_IVAR_82576;
3750 panic("unknown mac type %d\n", sc->hw.mac.type);
3752 for (i = 0; i < ivar_max; ++i)
3753 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, i, 0);
3754 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3758 KASSERT(sc->intr_type != PCI_INTR_TYPE_MSIX,
3759 ("82575 w/ MSI-X"));
3760 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3761 tmp |= E1000_CTRL_EXT_IRCA;
3762 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3766 * Map TX/RX interrupts to EICR
3768 switch (sc->hw.mac.type) {
3772 case e1000_vfadapt_i350:
3774 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3775 rxr = &sc->rx_rings[i];
3778 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3783 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3787 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3789 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3792 for (i = 0; i < sc->tx_ring_inuse; ++i) {
3793 txr = &sc->tx_rings[i];
3796 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3801 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3805 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3807 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3809 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3810 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3811 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3817 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3818 rxr = &sc->rx_rings[i];
3820 index = i & 0x7; /* Each IVAR has two entries */
3821 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3826 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3830 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3832 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3835 for (i = 0; i < sc->tx_ring_inuse; ++i) {
3836 txr = &sc->tx_rings[i];
3838 index = i & 0x7; /* Each IVAR has two entries */
3839 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3844 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3848 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3850 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3852 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3853 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3854 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3860 * Enable necessary interrupt bits.
3862 * The name of the register is confusing; in addition to
3863 * configuring the first vector of MSI-X, it also configures
3864 * which bits of EICR could be set by the hardware even when
3865 * MSI or line interrupt is used; it thus controls interrupt
3866 * generation. It MUST be configured explicitly; the default
3867 * value mentioned in the datasheet is wrong: RX queue0 and
3868 * TX queue0 are NOT enabled by default.
3870 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3874 panic("unknown mac type %d\n", sc->hw.mac.type);
3879 igb_setup_intr(struct igb_softc *sc)
3883 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3884 return igb_msix_setup(sc);
3886 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
3887 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_intr_shared : igb_intr,
3888 sc, &sc->intr_tag, &sc->main_serialize);
3890 device_printf(sc->dev, "Failed to register interrupt handler");
3894 for (i = 0; i < sc->tx_ring_cnt; ++i)
3895 sc->tx_rings[i].tx_intr_cpuid = rman_get_cpuid(sc->intr_res);
3901 igb_set_txintr_mask(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
3903 if (txr->sc->hw.mac.type == e1000_82575) {
3904 txr->tx_intr_bit = 0; /* unused */
3907 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3910 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3913 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3916 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3919 panic("unsupported # of TX ring, %d\n", txr->me);
3922 int intr_bit = *intr_bit0;
3924 txr->tx_intr_bit = intr_bit % intr_bitmax;
3925 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
3927 *intr_bit0 = intr_bit + 1;
3932 igb_set_rxintr_mask(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
3934 if (rxr->sc->hw.mac.type == e1000_82575) {
3935 rxr->rx_intr_bit = 0; /* unused */
3938 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3941 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3944 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3947 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3950 panic("unsupported # of RX ring, %d\n", rxr->me);
3953 int intr_bit = *intr_bit0;
3955 rxr->rx_intr_bit = intr_bit % intr_bitmax;
3956 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
3958 *intr_bit0 = intr_bit + 1;
3963 igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3965 struct igb_softc *sc = ifp->if_softc;
3967 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3968 sc->tx_serialize, sc->rx_serialize, slz);
3972 igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3974 struct igb_softc *sc = ifp->if_softc;
3976 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3977 sc->tx_serialize, sc->rx_serialize, slz);
3981 igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3983 struct igb_softc *sc = ifp->if_softc;
3985 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3986 sc->tx_serialize, sc->rx_serialize, slz);
3992 igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3993 boolean_t serialized)
3995 struct igb_softc *sc = ifp->if_softc;
3997 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3998 sc->tx_serialize, sc->rx_serialize, slz, serialized);
4001 #endif /* INVARIANTS */
4004 igb_set_intr_mask(struct igb_softc *sc)
4008 sc->intr_mask = sc->sts_intr_mask;
4009 for (i = 0; i < sc->rx_ring_inuse; ++i)
4010 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
4011 for (i = 0; i < sc->tx_ring_inuse; ++i)
4012 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
4014 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",
4020 igb_alloc_intr(struct igb_softc *sc)
4022 int i, intr_bit, intr_bitmax;
4025 igb_msix_try_alloc(sc);
4026 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
4030 * Allocate MSI/legacy interrupt resource
4032 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
4033 &sc->intr_rid, &intr_flags);
4035 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
4038 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
4040 sc->flags |= IGB_FLAG_SHARED_INTR;
4042 device_printf(sc->dev, "IRQ shared\n");
4044 intr_flags &= ~RF_SHAREABLE;
4046 device_printf(sc->dev, "IRQ unshared\n");
4050 sc->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4051 &sc->intr_rid, intr_flags);
4052 if (sc->intr_res == NULL) {
4053 device_printf(sc->dev, "Unable to allocate bus resource: "
4059 * Setup MSI/legacy interrupt mask
4061 switch (sc->hw.mac.type) {
4063 intr_bitmax = IGB_MAX_TXRXINT_82575;
4066 intr_bitmax = IGB_MAX_TXRXINT_82580;
4069 intr_bitmax = IGB_MAX_TXRXINT_I350;
4072 intr_bitmax = IGB_MAX_TXRXINT_82576;
4075 intr_bitmax = IGB_MIN_TXRXINT;
4079 for (i = 0; i < sc->tx_ring_cnt; ++i)
4080 igb_set_txintr_mask(&sc->tx_rings[i], &intr_bit, intr_bitmax);
4081 for (i = 0; i < sc->rx_ring_cnt; ++i)
4082 igb_set_rxintr_mask(&sc->rx_rings[i], &intr_bit, intr_bitmax);
4083 sc->sts_intr_bit = 0;
4084 sc->sts_intr_mask = E1000_EICR_OTHER;
4086 /* Initialize interrupt rate */
4087 sc->intr_rate = IGB_INTR_RATE;
4089 igb_set_ring_inuse(sc, FALSE);
4090 igb_set_intr_mask(sc);
4095 igb_free_intr(struct igb_softc *sc)
4097 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
4098 if (sc->intr_res != NULL) {
4099 bus_release_resource(sc->dev, SYS_RES_IRQ, sc->intr_rid,
4102 if (sc->intr_type == PCI_INTR_TYPE_MSI)
4103 pci_release_msi(sc->dev);
4105 igb_msix_free(sc, TRUE);
4110 igb_teardown_intr(struct igb_softc *sc)
4112 if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4113 bus_teardown_intr(sc->dev, sc->intr_res, sc->intr_tag);
4115 igb_msix_teardown(sc, sc->msix_cnt);
4119 igb_msix_try_alloc(struct igb_softc *sc)
4121 int msix_enable, msix_cnt, msix_cnt2, alloc_cnt;
4123 struct igb_msix_data *msix;
4124 boolean_t aggregate, setup = FALSE;
4127 * Don't enable MSI-X on 82575, see:
4128 * 82575 specification update errata #25
4130 if (sc->hw.mac.type == e1000_82575)
4133 /* Don't enable MSI-X on VF */
4137 msix_enable = device_getenv_int(sc->dev, "msix.enable",
4142 msix_cnt = pci_msix_count(sc->dev);
4143 #ifdef IGB_MSIX_DEBUG
4144 msix_cnt = device_getenv_int(sc->dev, "msix.count", msix_cnt);
4146 if (msix_cnt <= 1) {
4147 /* One MSI-X model does not make sense */
4152 while ((1 << (i + 1)) <= msix_cnt)
4157 device_printf(sc->dev, "MSI-X count %d/%d\n",
4158 msix_cnt2, msix_cnt);
4161 KKASSERT(msix_cnt2 <= msix_cnt);
4162 if (msix_cnt == msix_cnt2) {
4163 /* We need at least one MSI-X for link status */
4165 if (msix_cnt2 <= 1) {
4166 /* One MSI-X for RX/TX does not make sense */
4167 device_printf(sc->dev, "not enough MSI-X for TX/RX, "
4168 "MSI-X count %d/%d\n", msix_cnt2, msix_cnt);
4171 KKASSERT(msix_cnt > msix_cnt2);
4174 device_printf(sc->dev, "MSI-X count fixup %d/%d\n",
4175 msix_cnt2, msix_cnt);
4179 sc->rx_ring_msix = sc->rx_ring_cnt;
4180 if (sc->rx_ring_msix > msix_cnt2)
4181 sc->rx_ring_msix = msix_cnt2;
4183 sc->tx_ring_msix = sc->tx_ring_cnt;
4184 if (sc->tx_ring_msix > msix_cnt2)
4185 sc->tx_ring_msix = msix_cnt2;
4187 if (msix_cnt >= sc->tx_ring_msix + sc->rx_ring_msix + 1) {
4189 * Independent TX/RX MSI-X
4193 device_printf(sc->dev, "independent TX/RX MSI-X\n");
4194 alloc_cnt = sc->tx_ring_msix + sc->rx_ring_msix;
4197 * Aggregate TX/RX MSI-X
4201 device_printf(sc->dev, "aggregate TX/RX MSI-X\n");
4202 alloc_cnt = msix_cnt2;
4203 if (alloc_cnt > ncpus2)
4205 if (sc->rx_ring_msix > alloc_cnt)
4206 sc->rx_ring_msix = alloc_cnt;
4207 if (sc->tx_ring_msix > alloc_cnt)
4208 sc->tx_ring_msix = alloc_cnt;
4210 ++alloc_cnt; /* For link status */
4213 device_printf(sc->dev, "MSI-X alloc %d, "
4214 "RX ring %d, TX ring %d\n", alloc_cnt,
4215 sc->rx_ring_msix, sc->tx_ring_msix);
4218 sc->msix_mem_rid = PCIR_BAR(IGB_MSIX_BAR);
4219 sc->msix_mem_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
4220 &sc->msix_mem_rid, RF_ACTIVE);
4221 if (sc->msix_mem_res == NULL) {
4222 device_printf(sc->dev, "Unable to map MSI-X table\n");
4226 sc->msix_cnt = alloc_cnt;
4227 sc->msix_data = kmalloc_cachealign(
4228 sizeof(struct igb_msix_data) * sc->msix_cnt,
4229 M_DEVBUF, M_WAITOK | M_ZERO);
4230 for (x = 0; x < sc->msix_cnt; ++x) {
4231 msix = &sc->msix_data[x];
4233 lwkt_serialize_init(&msix->msix_serialize0);
4235 msix->msix_rid = -1;
4236 msix->msix_vector = x;
4237 msix->msix_mask = 1 << msix->msix_vector;
4238 msix->msix_rate = IGB_INTR_RATE;
4243 int offset, offset_def;
4248 if (sc->rx_ring_msix == ncpus2) {
4251 offset_def = (sc->rx_ring_msix *
4252 device_get_unit(sc->dev)) % ncpus2;
4254 offset = device_getenv_int(sc->dev,
4255 "msix.rxoff", offset_def);
4256 if (offset >= ncpus2 ||
4257 offset % sc->rx_ring_msix != 0) {
4258 device_printf(sc->dev,
4259 "invalid msix.rxoff %d, use %d\n",
4260 offset, offset_def);
4261 offset = offset_def;
4265 for (i = 0; i < sc->rx_ring_msix; ++i) {
4266 struct igb_rx_ring *rxr = &sc->rx_rings[i];
4268 KKASSERT(x < sc->msix_cnt);
4269 msix = &sc->msix_data[x++];
4270 rxr->rx_intr_bit = msix->msix_vector;
4271 rxr->rx_intr_mask = msix->msix_mask;
4273 msix->msix_serialize = &rxr->rx_serialize;
4274 msix->msix_func = igb_msix_rx;
4275 msix->msix_arg = rxr;
4276 msix->msix_cpuid = i + offset;
4277 KKASSERT(msix->msix_cpuid < ncpus2);
4278 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc),
4279 "%s rx%d", device_get_nameunit(sc->dev), i);
4280 msix->msix_rate = IGB_MSIX_RX_RATE;
4281 ksnprintf(msix->msix_rate_desc,
4282 sizeof(msix->msix_rate_desc),
4283 "RX%d interrupt rate", i);
4289 if (sc->tx_ring_msix == ncpus2) {
4292 offset_def = (sc->tx_ring_msix *
4293 device_get_unit(sc->dev)) % ncpus2;
4295 offset = device_getenv_int(sc->dev,
4296 "msix.txoff", offset_def);
4297 if (offset >= ncpus2 ||
4298 offset % sc->tx_ring_msix != 0) {
4299 device_printf(sc->dev,
4300 "invalid msix.txoff %d, use %d\n",
4301 offset, offset_def);
4302 offset = offset_def;
4306 for (i = 0; i < sc->tx_ring_msix; ++i) {
4307 struct igb_tx_ring *txr = &sc->tx_rings[i];
4309 KKASSERT(x < sc->msix_cnt);
4310 msix = &sc->msix_data[x++];
4311 txr->tx_intr_bit = msix->msix_vector;
4312 txr->tx_intr_mask = msix->msix_mask;
4314 msix->msix_serialize = &txr->tx_serialize;
4315 msix->msix_func = igb_msix_tx;
4316 msix->msix_arg = txr;
4317 msix->msix_cpuid = i + offset;
4318 txr->tx_intr_cpuid = msix->msix_cpuid;
4319 KKASSERT(msix->msix_cpuid < ncpus2);
4320 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc),
4321 "%s tx%d", device_get_nameunit(sc->dev), i);
4322 msix->msix_rate = IGB_MSIX_TX_RATE;
4323 ksnprintf(msix->msix_rate_desc,
4324 sizeof(msix->msix_rate_desc),
4325 "TX%d interrupt rate", i);
4336 KKASSERT(x < sc->msix_cnt);
4337 msix = &sc->msix_data[x++];
4338 sc->sts_intr_bit = msix->msix_vector;
4339 sc->sts_intr_mask = msix->msix_mask;
4341 msix->msix_serialize = &sc->main_serialize;
4342 msix->msix_func = igb_msix_status;
4343 msix->msix_arg = sc;
4344 msix->msix_cpuid = 0;
4345 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc), "%s sts",
4346 device_get_nameunit(sc->dev));
4347 ksnprintf(msix->msix_rate_desc, sizeof(msix->msix_rate_desc),
4348 "status interrupt rate");
4350 KKASSERT(x == sc->msix_cnt);
4352 error = pci_setup_msix(sc->dev);
4354 device_printf(sc->dev, "Setup MSI-X failed\n");
4359 for (i = 0; i < sc->msix_cnt; ++i) {
4360 msix = &sc->msix_data[i];
4362 error = pci_alloc_msix_vector(sc->dev, msix->msix_vector,
4363 &msix->msix_rid, msix->msix_cpuid);
4365 device_printf(sc->dev,
4366 "Unable to allocate MSI-X %d on cpu%d\n",
4367 msix->msix_vector, msix->msix_cpuid);
4371 msix->msix_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4372 &msix->msix_rid, RF_ACTIVE);
4373 if (msix->msix_res == NULL) {
4374 device_printf(sc->dev,
4375 "Unable to allocate MSI-X %d resource\n",
4382 pci_enable_msix(sc->dev);
4383 sc->intr_type = PCI_INTR_TYPE_MSIX;
4386 igb_msix_free(sc, setup);
4390 igb_msix_free(struct igb_softc *sc, boolean_t setup)
4394 KKASSERT(sc->msix_cnt > 1);
4396 for (i = 0; i < sc->msix_cnt; ++i) {
4397 struct igb_msix_data *msix = &sc->msix_data[i];
4399 if (msix->msix_res != NULL) {
4400 bus_release_resource(sc->dev, SYS_RES_IRQ,
4401 msix->msix_rid, msix->msix_res);
4403 if (msix->msix_rid >= 0)
4404 pci_release_msix_vector(sc->dev, msix->msix_rid);
4407 pci_teardown_msix(sc->dev);
4410 kfree(sc->msix_data, M_DEVBUF);
4411 sc->msix_data = NULL;
4415 igb_msix_setup(struct igb_softc *sc)
4419 for (i = 0; i < sc->msix_cnt; ++i) {
4420 struct igb_msix_data *msix = &sc->msix_data[i];
4423 error = bus_setup_intr_descr(sc->dev, msix->msix_res,
4424 INTR_MPSAFE, msix->msix_func, msix->msix_arg,
4425 &msix->msix_handle, msix->msix_serialize, msix->msix_desc);
4427 device_printf(sc->dev, "could not set up %s "
4428 "interrupt handler.\n", msix->msix_desc);
4429 igb_msix_teardown(sc, i);
4437 igb_msix_teardown(struct igb_softc *sc, int msix_cnt)
4441 for (i = 0; i < msix_cnt; ++i) {
4442 struct igb_msix_data *msix = &sc->msix_data[i];
4444 bus_teardown_intr(sc->dev, msix->msix_res, msix->msix_handle);
4449 igb_msix_rx(void *arg)
4451 struct igb_rx_ring *rxr = arg;
4453 ASSERT_SERIALIZED(&rxr->rx_serialize);
4456 E1000_WRITE_REG(&rxr->sc->hw, E1000_EIMS, rxr->rx_intr_mask);
4460 igb_msix_tx(void *arg)
4462 struct igb_tx_ring *txr = arg;
4464 ASSERT_SERIALIZED(&txr->tx_serialize);
4467 if (!ifsq_is_empty(txr->ifsq))
4468 ifsq_devstart(txr->ifsq);
4470 E1000_WRITE_REG(&txr->sc->hw, E1000_EIMS, txr->tx_intr_mask);
4474 igb_msix_status(void *arg)
4476 struct igb_softc *sc = arg;
4479 ASSERT_SERIALIZED(&sc->main_serialize);
4481 icr = E1000_READ_REG(&sc->hw, E1000_ICR);
4482 if (icr & E1000_ICR_LSC) {
4483 sc->hw.mac.get_link_status = 1;
4484 igb_update_link_status(sc);
4487 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->sts_intr_mask);
4491 igb_set_ring_inuse(struct igb_softc *sc, boolean_t polling)
4493 sc->rx_ring_inuse = igb_get_rxring_inuse(sc, polling);
4494 sc->tx_ring_inuse = igb_get_txring_inuse(sc, polling);
4496 if_printf(&sc->arpcom.ac_if, "RX rings %d/%d, TX rings %d/%d\n",
4497 sc->rx_ring_inuse, sc->rx_ring_cnt,
4498 sc->tx_ring_inuse, sc->tx_ring_cnt);
4503 igb_get_rxring_inuse(const struct igb_softc *sc, boolean_t polling)
4505 if (!IGB_ENABLE_HWRSS(sc))
4509 return sc->rx_ring_cnt;
4510 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4511 return IGB_MIN_RING_RSS;
4513 return sc->rx_ring_msix;
4517 igb_get_txring_inuse(const struct igb_softc *sc, boolean_t polling)
4519 if (!IGB_ENABLE_HWTSS(sc))
4523 return sc->tx_ring_cnt;
4524 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4525 return IGB_MIN_RING;
4527 return sc->tx_ring_msix;
4531 igb_tso_pullup(struct igb_tx_ring *txr, struct mbuf **mp)
4533 int hoff, iphlen, thoff;
4537 KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
4539 iphlen = m->m_pkthdr.csum_iphlen;
4540 thoff = m->m_pkthdr.csum_thlen;
4541 hoff = m->m_pkthdr.csum_lhlen;
4543 KASSERT(iphlen > 0, ("invalid ip hlen"));
4544 KASSERT(thoff > 0, ("invalid tcp hlen"));
4545 KASSERT(hoff > 0, ("invalid ether hlen"));
4547 if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
4548 m = m_pullup(m, hoff + iphlen + thoff);
4555 if (txr->tx_flags & IGB_TXFLAG_TSO_IPLEN0) {
4558 ip = mtodoff(m, struct ip *, hoff);
4566 igb_tso_ctx(struct igb_tx_ring *txr, struct mbuf *m, uint32_t *hlen)
4568 struct e1000_adv_tx_context_desc *TXD;
4569 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
4570 int hoff, ctxd, iphlen, thoff;
4572 iphlen = m->m_pkthdr.csum_iphlen;
4573 thoff = m->m_pkthdr.csum_thlen;
4574 hoff = m->m_pkthdr.csum_lhlen;
4576 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
4578 ctxd = txr->next_avail_desc;
4579 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
4581 if (m->m_flags & M_VLANTAG) {
4584 vlantag = htole16(m->m_pkthdr.ether_vlantag);
4585 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
4588 vlan_macip_lens |= (hoff << E1000_ADVTXD_MACLEN_SHIFT);
4589 vlan_macip_lens |= iphlen;
4591 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
4592 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
4593 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
4595 mss_l4len_idx |= (m->m_pkthdr.tso_segsz << E1000_ADVTXD_MSS_SHIFT);
4596 mss_l4len_idx |= (thoff << E1000_ADVTXD_L4LEN_SHIFT);
4597 /* 82575 needs the queue index added */
4598 if (txr->sc->hw.mac.type == e1000_82575)
4599 mss_l4len_idx |= txr->me << 4;
4601 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
4602 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
4603 TXD->seqnum_seed = htole32(0);
4604 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
4606 /* We've consumed the first desc, adjust counters */
4607 if (++ctxd == txr->num_tx_desc)
4609 txr->next_avail_desc = ctxd;
4612 *hlen = hoff + iphlen + thoff;