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);
941 /* Initialize interrupt */
944 /* Prepare transmit descriptors and buffers */
945 for (i = 0; i < sc->tx_ring_inuse; ++i)
946 igb_init_tx_ring(&sc->tx_rings[i]);
947 igb_init_tx_unit(sc);
949 /* Setup Multicast table */
954 * Figure out the desired mbuf pool
955 * for doing jumbo/packetsplit
957 if (adapter->max_frame_size <= 2048)
958 adapter->rx_mbuf_sz = MCLBYTES;
959 else if (adapter->max_frame_size <= 4096)
960 adapter->rx_mbuf_sz = MJUMPAGESIZE;
962 adapter->rx_mbuf_sz = MJUM9BYTES;
965 /* Prepare receive descriptors and buffers */
966 for (i = 0; i < sc->rx_ring_inuse; ++i) {
969 error = igb_init_rx_ring(&sc->rx_rings[i]);
971 if_printf(ifp, "Could not setup receive structures\n");
976 igb_init_rx_unit(sc);
978 /* Enable VLAN support */
979 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
982 /* Don't lose promiscuous settings */
985 ifp->if_flags |= IFF_RUNNING;
986 for (i = 0; i < sc->tx_ring_inuse; ++i) {
987 ifsq_clr_oactive(sc->tx_rings[i].ifsq);
988 ifsq_watchdog_start(&sc->tx_rings[i].tx_watchdog);
991 if (polling || sc->intr_type == PCI_INTR_TYPE_MSIX)
992 sc->timer_cpuid = 0; /* XXX fixed */
994 sc->timer_cpuid = rman_get_cpuid(sc->intr_res);
995 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
996 e1000_clear_hw_cntrs_base_generic(&sc->hw);
998 /* This clears any pending interrupts */
999 E1000_READ_REG(&sc->hw, E1000_ICR);
1002 * Only enable interrupts if we are not polling, make sure
1003 * they are off otherwise.
1006 igb_disable_intr(sc);
1008 igb_enable_intr(sc);
1009 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
1012 /* Set Energy Efficient Ethernet */
1013 e1000_set_eee_i350(&sc->hw);
1015 /* Don't reset the phy next time init gets called */
1016 sc->hw.phy.reset_disable = TRUE;
1020 igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1022 struct igb_softc *sc = ifp->if_softc;
1023 u_char fiber_type = IFM_1000_SX;
1025 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1027 igb_update_link_status(sc);
1029 ifmr->ifm_status = IFM_AVALID;
1030 ifmr->ifm_active = IFM_ETHER;
1032 if (!sc->link_active)
1035 ifmr->ifm_status |= IFM_ACTIVE;
1037 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1038 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1039 ifmr->ifm_active |= fiber_type | IFM_FDX;
1041 switch (sc->link_speed) {
1043 ifmr->ifm_active |= IFM_10_T;
1047 ifmr->ifm_active |= IFM_100_TX;
1051 ifmr->ifm_active |= IFM_1000_T;
1054 if (sc->link_duplex == FULL_DUPLEX)
1055 ifmr->ifm_active |= IFM_FDX;
1057 ifmr->ifm_active |= IFM_HDX;
1062 igb_media_change(struct ifnet *ifp)
1064 struct igb_softc *sc = ifp->if_softc;
1065 struct ifmedia *ifm = &sc->media;
1067 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1069 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1072 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1074 sc->hw.mac.autoneg = DO_AUTO_NEG;
1075 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1081 sc->hw.mac.autoneg = DO_AUTO_NEG;
1082 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1086 sc->hw.mac.autoneg = FALSE;
1087 sc->hw.phy.autoneg_advertised = 0;
1088 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1089 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1091 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1095 sc->hw.mac.autoneg = FALSE;
1096 sc->hw.phy.autoneg_advertised = 0;
1097 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1098 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1100 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1104 if_printf(ifp, "Unsupported media type\n");
1114 igb_set_promisc(struct igb_softc *sc)
1116 struct ifnet *ifp = &sc->arpcom.ac_if;
1117 struct e1000_hw *hw = &sc->hw;
1121 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1125 reg = E1000_READ_REG(hw, E1000_RCTL);
1126 if (ifp->if_flags & IFF_PROMISC) {
1127 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1128 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1129 } else if (ifp->if_flags & IFF_ALLMULTI) {
1130 reg |= E1000_RCTL_MPE;
1131 reg &= ~E1000_RCTL_UPE;
1132 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1137 igb_disable_promisc(struct igb_softc *sc)
1139 struct e1000_hw *hw = &sc->hw;
1143 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1146 reg = E1000_READ_REG(hw, E1000_RCTL);
1147 reg &= ~E1000_RCTL_UPE;
1148 reg &= ~E1000_RCTL_MPE;
1149 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1153 igb_set_multi(struct igb_softc *sc)
1155 struct ifnet *ifp = &sc->arpcom.ac_if;
1156 struct ifmultiaddr *ifma;
1157 uint32_t reg_rctl = 0;
1162 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1164 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1165 if (ifma->ifma_addr->sa_family != AF_LINK)
1168 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1171 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1172 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1176 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1177 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1178 reg_rctl |= E1000_RCTL_MPE;
1179 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1181 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1186 igb_timer(void *xsc)
1188 struct igb_softc *sc = xsc;
1190 lwkt_serialize_enter(&sc->main_serialize);
1192 igb_update_link_status(sc);
1193 igb_update_stats_counters(sc);
1195 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
1197 lwkt_serialize_exit(&sc->main_serialize);
1201 igb_update_link_status(struct igb_softc *sc)
1203 struct ifnet *ifp = &sc->arpcom.ac_if;
1204 struct e1000_hw *hw = &sc->hw;
1205 uint32_t link_check, thstat, ctrl;
1207 link_check = thstat = ctrl = 0;
1209 /* Get the cached link value or read for real */
1210 switch (hw->phy.media_type) {
1211 case e1000_media_type_copper:
1212 if (hw->mac.get_link_status) {
1213 /* Do the work to read phy */
1214 e1000_check_for_link(hw);
1215 link_check = !hw->mac.get_link_status;
1221 case e1000_media_type_fiber:
1222 e1000_check_for_link(hw);
1223 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1226 case e1000_media_type_internal_serdes:
1227 e1000_check_for_link(hw);
1228 link_check = hw->mac.serdes_has_link;
1231 /* VF device is type_unknown */
1232 case e1000_media_type_unknown:
1233 e1000_check_for_link(hw);
1234 link_check = !hw->mac.get_link_status;
1240 /* Check for thermal downshift or shutdown */
1241 if (hw->mac.type == e1000_i350) {
1242 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1243 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1246 /* Now we check if a transition has happened */
1247 if (link_check && sc->link_active == 0) {
1248 e1000_get_speed_and_duplex(hw,
1249 &sc->link_speed, &sc->link_duplex);
1251 if_printf(ifp, "Link is up %d Mbps %s\n",
1253 sc->link_duplex == FULL_DUPLEX ?
1254 "Full Duplex" : "Half Duplex");
1256 sc->link_active = 1;
1258 ifp->if_baudrate = sc->link_speed * 1000000;
1259 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1260 (thstat & E1000_THSTAT_LINK_THROTTLE))
1261 if_printf(ifp, "Link: thermal downshift\n");
1262 /* This can sleep */
1263 ifp->if_link_state = LINK_STATE_UP;
1264 if_link_state_change(ifp);
1265 } else if (!link_check && sc->link_active == 1) {
1266 ifp->if_baudrate = sc->link_speed = 0;
1267 sc->link_duplex = 0;
1269 if_printf(ifp, "Link is Down\n");
1270 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1271 (thstat & E1000_THSTAT_PWR_DOWN))
1272 if_printf(ifp, "Link: thermal shutdown\n");
1273 sc->link_active = 0;
1274 /* This can sleep */
1275 ifp->if_link_state = LINK_STATE_DOWN;
1276 if_link_state_change(ifp);
1281 igb_stop(struct igb_softc *sc)
1283 struct ifnet *ifp = &sc->arpcom.ac_if;
1286 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1288 igb_disable_intr(sc);
1290 callout_stop(&sc->timer);
1292 ifp->if_flags &= ~IFF_RUNNING;
1293 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1294 ifsq_clr_oactive(sc->tx_rings[i].ifsq);
1295 ifsq_watchdog_stop(&sc->tx_rings[i].tx_watchdog);
1296 sc->tx_rings[i].tx_flags &= ~IGB_TXFLAG_ENABLED;
1299 e1000_reset_hw(&sc->hw);
1300 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1302 e1000_led_off(&sc->hw);
1303 e1000_cleanup_led(&sc->hw);
1305 for (i = 0; i < sc->tx_ring_cnt; ++i)
1306 igb_free_tx_ring(&sc->tx_rings[i]);
1307 for (i = 0; i < sc->rx_ring_cnt; ++i)
1308 igb_free_rx_ring(&sc->rx_rings[i]);
1312 igb_reset(struct igb_softc *sc)
1314 struct ifnet *ifp = &sc->arpcom.ac_if;
1315 struct e1000_hw *hw = &sc->hw;
1316 struct e1000_fc_info *fc = &hw->fc;
1320 /* Let the firmware know the OS is in control */
1321 igb_get_hw_control(sc);
1324 * Packet Buffer Allocation (PBA)
1325 * Writing PBA sets the receive portion of the buffer
1326 * the remainder is used for the transmit buffer.
1328 switch (hw->mac.type) {
1330 pba = E1000_PBA_32K;
1335 pba = E1000_READ_REG(hw, E1000_RXPBS);
1336 pba &= E1000_RXPBS_SIZE_MASK_82576;
1341 case e1000_vfadapt_i350:
1342 pba = E1000_READ_REG(hw, E1000_RXPBS);
1343 pba = e1000_rxpbs_adjust_82580(pba);
1345 /* XXX pba = E1000_PBA_35K; */
1351 /* Special needs in case of Jumbo frames */
1352 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1353 uint32_t tx_space, min_tx, min_rx;
1355 pba = E1000_READ_REG(hw, E1000_PBA);
1356 tx_space = pba >> 16;
1359 min_tx = (sc->max_frame_size +
1360 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1361 min_tx = roundup2(min_tx, 1024);
1363 min_rx = sc->max_frame_size;
1364 min_rx = roundup2(min_rx, 1024);
1366 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1367 pba = pba - (min_tx - tx_space);
1369 * if short on rx space, rx wins
1370 * and must trump tx adjustment
1375 E1000_WRITE_REG(hw, E1000_PBA, pba);
1379 * These parameters control the automatic generation (Tx) and
1380 * response (Rx) to Ethernet PAUSE frames.
1381 * - High water mark should allow for at least two frames to be
1382 * received after sending an XOFF.
1383 * - Low water mark works best when it is very near the high water mark.
1384 * This allows the receiver to restart by sending XON when it has
1387 hwm = min(((pba << 10) * 9 / 10),
1388 ((pba << 10) - 2 * sc->max_frame_size));
1390 if (hw->mac.type < e1000_82576) {
1391 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1392 fc->low_water = fc->high_water - 8;
1394 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1395 fc->low_water = fc->high_water - 16;
1397 fc->pause_time = IGB_FC_PAUSE_TIME;
1398 fc->send_xon = TRUE;
1400 /* Issue a global reset */
1402 E1000_WRITE_REG(hw, E1000_WUC, 0);
1404 if (e1000_init_hw(hw) < 0)
1405 if_printf(ifp, "Hardware Initialization Failed\n");
1407 /* Setup DMA Coalescing */
1408 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1411 hwm = (pba - 4) << 10;
1412 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1413 & E1000_DMACR_DMACTHR_MASK;
1415 /* transition to L0x or L1 if available..*/
1416 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1418 /* timer = +-1000 usec in 32usec intervals */
1420 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1422 /* No lower threshold */
1423 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1425 /* set hwm to PBA - 2 * max frame size */
1426 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1428 /* Set the interval before transition */
1429 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1430 reg |= 0x800000FF; /* 255 usec */
1431 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1433 /* free space in tx packet buffer to wake from DMA coal */
1434 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1435 (20480 - (2 * sc->max_frame_size)) >> 6);
1437 /* make low power state decision controlled by DMA coal */
1438 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1439 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1440 reg | E1000_PCIEMISC_LX_DECISION);
1441 if_printf(ifp, "DMA Coalescing enabled\n");
1444 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1445 e1000_get_phy_info(hw);
1446 e1000_check_for_link(hw);
1450 igb_setup_ifp(struct igb_softc *sc)
1452 struct ifnet *ifp = &sc->arpcom.ac_if;
1455 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1456 ifp->if_init = igb_init;
1457 ifp->if_ioctl = igb_ioctl;
1458 ifp->if_start = igb_start;
1459 ifp->if_serialize = igb_serialize;
1460 ifp->if_deserialize = igb_deserialize;
1461 ifp->if_tryserialize = igb_tryserialize;
1463 ifp->if_serialize_assert = igb_serialize_assert;
1465 #ifdef IFPOLL_ENABLE
1466 ifp->if_npoll = igb_npoll;
1469 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1470 ifq_set_ready(&ifp->if_snd);
1471 ifq_set_subq_cnt(&ifp->if_snd, sc->tx_ring_cnt);
1473 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1475 ifp->if_capabilities =
1476 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_TSO;
1477 if (IGB_ENABLE_HWRSS(sc))
1478 ifp->if_capabilities |= IFCAP_RSS;
1479 ifp->if_capenable = ifp->if_capabilities;
1480 ifp->if_hwassist = IGB_CSUM_FEATURES | CSUM_TSO;
1483 * Tell the upper layer(s) we support long frames
1485 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1488 * Specify the media types supported by this adapter and register
1489 * callbacks to update media and link information
1491 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1492 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1493 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1494 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1496 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1498 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1499 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1501 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1502 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1504 if (sc->hw.phy.type != e1000_phy_ife) {
1505 ifmedia_add(&sc->media,
1506 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1507 ifmedia_add(&sc->media,
1508 IFM_ETHER | IFM_1000_T, 0, NULL);
1511 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1512 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1516 igb_add_sysctl(struct igb_softc *sc)
1521 sysctl_ctx_init(&sc->sysctl_ctx);
1522 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1523 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1524 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1525 if (sc->sysctl_tree == NULL) {
1526 device_printf(sc->dev, "can't add sysctl node\n");
1530 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1531 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1532 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1533 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1534 "# of RX rings used");
1535 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1536 OID_AUTO, "txr", CTLFLAG_RD, &sc->tx_ring_cnt, 0, "# of TX rings");
1537 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1538 OID_AUTO, "txr_inuse", CTLFLAG_RD, &sc->tx_ring_inuse, 0,
1539 "# of TX rings used");
1540 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1541 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1543 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1544 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1547 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
1548 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1549 SYSCTL_CHILDREN(sc->sysctl_tree),
1550 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1551 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1553 for (i = 0; i < sc->msix_cnt; ++i) {
1554 struct igb_msix_data *msix = &sc->msix_data[i];
1556 ksnprintf(node, sizeof(node), "msix%d_rate", i);
1557 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1558 SYSCTL_CHILDREN(sc->sysctl_tree),
1559 OID_AUTO, node, CTLTYPE_INT | CTLFLAG_RW,
1560 msix, 0, igb_sysctl_msix_rate, "I",
1561 msix->msix_rate_desc);
1565 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1566 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1567 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
1568 "# of segments per TX interrupt");
1570 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1571 OID_AUTO, "tx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1572 sc, 0, igb_sysctl_tx_wreg_nsegs, "I",
1573 "# of segments sent before write to hardware register");
1575 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1576 OID_AUTO, "rx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1577 sc, 0, igb_sysctl_rx_wreg_nsegs, "I",
1578 "# of segments received before write to hardware register");
1580 #ifdef IFPOLL_ENABLE
1581 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1582 OID_AUTO, "npoll_rxoff", CTLTYPE_INT|CTLFLAG_RW,
1583 sc, 0, igb_sysctl_npoll_rxoff, "I", "NPOLLING RX cpu offset");
1584 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1585 OID_AUTO, "npoll_txoff", CTLTYPE_INT|CTLFLAG_RW,
1586 sc, 0, igb_sysctl_npoll_txoff, "I", "NPOLLING TX cpu offset");
1589 #ifdef IGB_RSS_DEBUG
1590 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1591 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1593 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1594 ksnprintf(node, sizeof(node), "rx%d_pkt", i);
1595 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1596 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
1597 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1600 #ifdef IGB_TSS_DEBUG
1601 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1602 ksnprintf(node, sizeof(node), "tx%d_pkt", i);
1603 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
1604 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
1605 CTLFLAG_RW, &sc->tx_rings[i].tx_packets, "TXed packets");
1611 igb_alloc_rings(struct igb_softc *sc)
1616 * Create top level busdma tag
1618 error = bus_dma_tag_create(NULL, 1, 0,
1619 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1620 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1623 device_printf(sc->dev, "could not create top level DMA tag\n");
1628 * Allocate TX descriptor rings and buffers
1630 sc->tx_rings = kmalloc_cachealign(
1631 sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1632 M_DEVBUF, M_WAITOK | M_ZERO);
1633 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1634 struct igb_tx_ring *txr = &sc->tx_rings[i];
1636 /* Set up some basics */
1639 lwkt_serialize_init(&txr->tx_serialize);
1641 error = igb_create_tx_ring(txr);
1647 * Allocate RX descriptor rings and buffers
1649 sc->rx_rings = kmalloc_cachealign(
1650 sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1651 M_DEVBUF, M_WAITOK | M_ZERO);
1652 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1653 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1655 /* Set up some basics */
1658 lwkt_serialize_init(&rxr->rx_serialize);
1660 error = igb_create_rx_ring(rxr);
1669 igb_free_rings(struct igb_softc *sc)
1673 if (sc->tx_rings != NULL) {
1674 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1675 struct igb_tx_ring *txr = &sc->tx_rings[i];
1677 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1679 kfree(sc->tx_rings, M_DEVBUF);
1682 if (sc->rx_rings != NULL) {
1683 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1684 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1686 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1688 kfree(sc->rx_rings, M_DEVBUF);
1693 igb_create_tx_ring(struct igb_tx_ring *txr)
1695 int tsize, error, i, ntxd;
1698 * Validate number of transmit descriptors. It must not exceed
1699 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1701 ntxd = device_getenv_int(txr->sc->dev, "txd", igb_txd);
1702 if ((ntxd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN != 0 ||
1703 ntxd > IGB_MAX_TXD || ntxd < IGB_MIN_TXD) {
1704 device_printf(txr->sc->dev,
1705 "Using %d TX descriptors instead of %d!\n",
1706 IGB_DEFAULT_TXD, ntxd);
1707 txr->num_tx_desc = IGB_DEFAULT_TXD;
1709 txr->num_tx_desc = ntxd;
1713 * Allocate TX descriptor ring
1715 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1717 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1718 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1719 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1720 if (txr->txdma.dma_vaddr == NULL) {
1721 device_printf(txr->sc->dev,
1722 "Unable to allocate TX Descriptor memory\n");
1725 txr->tx_base = txr->txdma.dma_vaddr;
1726 bzero(txr->tx_base, tsize);
1728 tsize = __VM_CACHELINE_ALIGN(
1729 sizeof(struct igb_tx_buf) * txr->num_tx_desc);
1730 txr->tx_buf = kmalloc_cachealign(tsize, M_DEVBUF, M_WAITOK | M_ZERO);
1733 * Allocate TX head write-back buffer
1735 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1736 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1737 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1738 if (txr->tx_hdr == NULL) {
1739 device_printf(txr->sc->dev,
1740 "Unable to allocate TX head write-back buffer\n");
1745 * Create DMA tag for TX buffers
1747 error = bus_dma_tag_create(txr->sc->parent_tag,
1748 1, 0, /* alignment, bounds */
1749 BUS_SPACE_MAXADDR, /* lowaddr */
1750 BUS_SPACE_MAXADDR, /* highaddr */
1751 NULL, NULL, /* filter, filterarg */
1752 IGB_TSO_SIZE, /* maxsize */
1753 IGB_MAX_SCATTER, /* nsegments */
1754 PAGE_SIZE, /* maxsegsize */
1755 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1756 BUS_DMA_ONEBPAGE, /* flags */
1759 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1760 kfree(txr->tx_buf, M_DEVBUF);
1766 * Create DMA maps for TX buffers
1768 for (i = 0; i < txr->num_tx_desc; ++i) {
1769 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1771 error = bus_dmamap_create(txr->tx_tag,
1772 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1774 device_printf(txr->sc->dev,
1775 "Unable to create TX DMA map\n");
1776 igb_destroy_tx_ring(txr, i);
1781 if (txr->sc->hw.mac.type == e1000_82575)
1782 txr->tx_flags |= IGB_TXFLAG_TSO_IPLEN0;
1785 * Initialize various watermark
1787 txr->spare_desc = IGB_TX_SPARE;
1788 txr->intr_nsegs = txr->num_tx_desc / 16;
1789 txr->wreg_nsegs = IGB_DEF_TXWREG_NSEGS;
1790 txr->oact_hi_desc = txr->num_tx_desc / 2;
1791 txr->oact_lo_desc = txr->num_tx_desc / 8;
1792 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1793 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1794 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1795 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1801 igb_free_tx_ring(struct igb_tx_ring *txr)
1805 for (i = 0; i < txr->num_tx_desc; ++i) {
1806 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1808 if (txbuf->m_head != NULL) {
1809 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1810 m_freem(txbuf->m_head);
1811 txbuf->m_head = NULL;
1817 igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1821 if (txr->txdma.dma_vaddr != NULL) {
1822 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1823 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1824 txr->txdma.dma_map);
1825 bus_dma_tag_destroy(txr->txdma.dma_tag);
1826 txr->txdma.dma_vaddr = NULL;
1829 if (txr->tx_hdr != NULL) {
1830 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1831 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1833 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1837 if (txr->tx_buf == NULL)
1840 for (i = 0; i < ndesc; ++i) {
1841 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1843 KKASSERT(txbuf->m_head == NULL);
1844 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1846 bus_dma_tag_destroy(txr->tx_tag);
1848 kfree(txr->tx_buf, M_DEVBUF);
1853 igb_init_tx_ring(struct igb_tx_ring *txr)
1855 /* Clear the old descriptor contents */
1857 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1859 /* Clear TX head write-back buffer */
1863 txr->next_avail_desc = 0;
1864 txr->next_to_clean = 0;
1867 /* Set number of descriptors available */
1868 txr->tx_avail = txr->num_tx_desc;
1870 /* Enable this TX ring */
1871 txr->tx_flags |= IGB_TXFLAG_ENABLED;
1875 igb_init_tx_unit(struct igb_softc *sc)
1877 struct e1000_hw *hw = &sc->hw;
1881 /* Setup the Tx Descriptor Rings */
1882 for (i = 0; i < sc->tx_ring_inuse; ++i) {
1883 struct igb_tx_ring *txr = &sc->tx_rings[i];
1884 uint64_t bus_addr = txr->txdma.dma_paddr;
1885 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1886 uint32_t txdctl = 0;
1887 uint32_t dca_txctrl;
1889 E1000_WRITE_REG(hw, E1000_TDLEN(i),
1890 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1891 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1892 (uint32_t)(bus_addr >> 32));
1893 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1894 (uint32_t)bus_addr);
1896 /* Setup the HW Tx Head and Tail descriptor pointers */
1897 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1898 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1900 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1901 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1902 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1905 * Don't set WB_on_EITR:
1906 * - 82575 does not have it
1907 * - It almost has no effect on 82576, see:
1908 * 82576 specification update errata #26
1909 * - It causes unnecessary bus traffic
1911 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
1912 (uint32_t)(hdr_paddr >> 32));
1913 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
1914 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1917 * WTHRESH is ignored by the hardware, since header
1918 * write back mode is used.
1920 txdctl |= IGB_TX_PTHRESH;
1921 txdctl |= IGB_TX_HTHRESH << 8;
1922 txdctl |= IGB_TX_WTHRESH << 16;
1923 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1924 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
1930 e1000_config_collision_dist(hw);
1932 /* Program the Transmit Control Register */
1933 tctl = E1000_READ_REG(hw, E1000_TCTL);
1934 tctl &= ~E1000_TCTL_CT;
1935 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1936 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1938 /* This write will effectively turn on the transmit unit. */
1939 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1943 igb_txcsum_ctx(struct igb_tx_ring *txr, struct mbuf *mp)
1945 struct e1000_adv_tx_context_desc *TXD;
1946 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1947 int ehdrlen, ctxd, ip_hlen = 0;
1948 boolean_t offload = TRUE;
1950 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1953 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
1955 ctxd = txr->next_avail_desc;
1956 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1959 * In advanced descriptors the vlan tag must
1960 * be placed into the context descriptor, thus
1961 * we need to be here just for that setup.
1963 if (mp->m_flags & M_VLANTAG) {
1966 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1967 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1968 } else if (!offload) {
1972 ehdrlen = mp->m_pkthdr.csum_lhlen;
1973 KASSERT(ehdrlen > 0, ("invalid ether hlen"));
1975 /* Set the ether header length */
1976 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
1977 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
1978 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1979 ip_hlen = mp->m_pkthdr.csum_iphlen;
1980 KASSERT(ip_hlen > 0, ("invalid ip hlen"));
1982 vlan_macip_lens |= ip_hlen;
1984 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1985 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1986 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1987 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1988 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1990 /* 82575 needs the queue index added */
1991 if (txr->sc->hw.mac.type == e1000_82575)
1992 mss_l4len_idx = txr->me << 4;
1994 /* Now copy bits into descriptor */
1995 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
1996 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
1997 TXD->seqnum_seed = htole32(0);
1998 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
2000 /* We've consumed the first desc, adjust counters */
2001 if (++ctxd == txr->num_tx_desc)
2003 txr->next_avail_desc = ctxd;
2010 igb_txeof(struct igb_tx_ring *txr)
2012 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
2013 int first, hdr, avail;
2015 if (txr->tx_avail == txr->num_tx_desc)
2018 first = txr->next_to_clean;
2019 hdr = *(txr->tx_hdr);
2024 avail = txr->tx_avail;
2025 while (first != hdr) {
2026 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
2029 if (txbuf->m_head) {
2030 bus_dmamap_unload(txr->tx_tag, txbuf->map);
2031 m_freem(txbuf->m_head);
2032 txbuf->m_head = NULL;
2035 if (++first == txr->num_tx_desc)
2038 txr->next_to_clean = first;
2039 txr->tx_avail = avail;
2042 * If we have a minimum free, clear OACTIVE
2043 * to tell the stack that it is OK to send packets.
2045 if (IGB_IS_NOT_OACTIVE(txr)) {
2046 ifsq_clr_oactive(txr->ifsq);
2049 * We have enough TX descriptors, turn off
2050 * the watchdog. We allow small amount of
2051 * packets (roughly intr_nsegs) pending on
2052 * the transmit ring.
2054 txr->tx_watchdog.wd_timer = 0;
2059 igb_create_rx_ring(struct igb_rx_ring *rxr)
2061 int rsize, i, error, nrxd;
2064 * Validate number of receive descriptors. It must not exceed
2065 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
2067 nrxd = device_getenv_int(rxr->sc->dev, "rxd", igb_rxd);
2068 if ((nrxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN != 0 ||
2069 nrxd > IGB_MAX_RXD || nrxd < IGB_MIN_RXD) {
2070 device_printf(rxr->sc->dev,
2071 "Using %d RX descriptors instead of %d!\n",
2072 IGB_DEFAULT_RXD, nrxd);
2073 rxr->num_rx_desc = IGB_DEFAULT_RXD;
2075 rxr->num_rx_desc = nrxd;
2079 * Allocate RX descriptor ring
2081 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
2083 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
2084 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
2085 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
2086 &rxr->rxdma.dma_paddr);
2087 if (rxr->rxdma.dma_vaddr == NULL) {
2088 device_printf(rxr->sc->dev,
2089 "Unable to allocate RxDescriptor memory\n");
2092 rxr->rx_base = rxr->rxdma.dma_vaddr;
2093 bzero(rxr->rx_base, rsize);
2095 rsize = __VM_CACHELINE_ALIGN(
2096 sizeof(struct igb_rx_buf) * rxr->num_rx_desc);
2097 rxr->rx_buf = kmalloc_cachealign(rsize, M_DEVBUF, M_WAITOK | M_ZERO);
2100 * Create DMA tag for RX buffers
2102 error = bus_dma_tag_create(rxr->sc->parent_tag,
2103 1, 0, /* alignment, bounds */
2104 BUS_SPACE_MAXADDR, /* lowaddr */
2105 BUS_SPACE_MAXADDR, /* highaddr */
2106 NULL, NULL, /* filter, filterarg */
2107 MCLBYTES, /* maxsize */
2109 MCLBYTES, /* maxsegsize */
2110 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2113 device_printf(rxr->sc->dev,
2114 "Unable to create RX payload DMA tag\n");
2115 kfree(rxr->rx_buf, M_DEVBUF);
2121 * Create spare DMA map for RX buffers
2123 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2126 device_printf(rxr->sc->dev,
2127 "Unable to create spare RX DMA maps\n");
2128 bus_dma_tag_destroy(rxr->rx_tag);
2129 kfree(rxr->rx_buf, M_DEVBUF);
2135 * Create DMA maps for RX buffers
2137 for (i = 0; i < rxr->num_rx_desc; i++) {
2138 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2140 error = bus_dmamap_create(rxr->rx_tag,
2141 BUS_DMA_WAITOK, &rxbuf->map);
2143 device_printf(rxr->sc->dev,
2144 "Unable to create RX DMA maps\n");
2145 igb_destroy_rx_ring(rxr, i);
2151 * Initialize various watermark
2153 rxr->wreg_nsegs = IGB_DEF_RXWREG_NSEGS;
2159 igb_free_rx_ring(struct igb_rx_ring *rxr)
2163 for (i = 0; i < rxr->num_rx_desc; ++i) {
2164 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2166 if (rxbuf->m_head != NULL) {
2167 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2168 m_freem(rxbuf->m_head);
2169 rxbuf->m_head = NULL;
2173 if (rxr->fmp != NULL)
2180 igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2184 if (rxr->rxdma.dma_vaddr != NULL) {
2185 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2186 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2187 rxr->rxdma.dma_map);
2188 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2189 rxr->rxdma.dma_vaddr = NULL;
2192 if (rxr->rx_buf == NULL)
2195 for (i = 0; i < ndesc; ++i) {
2196 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2198 KKASSERT(rxbuf->m_head == NULL);
2199 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2201 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2202 bus_dma_tag_destroy(rxr->rx_tag);
2204 kfree(rxr->rx_buf, M_DEVBUF);
2209 igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2211 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2212 rxd->wb.upper.status_error = 0;
2216 igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2219 bus_dma_segment_t seg;
2221 struct igb_rx_buf *rxbuf;
2224 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2227 if_printf(&rxr->sc->arpcom.ac_if,
2228 "Unable to allocate RX mbuf\n");
2232 m->m_len = m->m_pkthdr.len = MCLBYTES;
2234 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2235 m_adj(m, ETHER_ALIGN);
2237 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2238 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2242 if_printf(&rxr->sc->arpcom.ac_if,
2243 "Unable to load RX mbuf\n");
2248 rxbuf = &rxr->rx_buf[i];
2249 if (rxbuf->m_head != NULL)
2250 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2253 rxbuf->map = rxr->rx_sparemap;
2254 rxr->rx_sparemap = map;
2257 rxbuf->paddr = seg.ds_addr;
2259 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2264 igb_init_rx_ring(struct igb_rx_ring *rxr)
2268 /* Clear the ring contents */
2270 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
2272 /* Now replenish the ring mbufs */
2273 for (i = 0; i < rxr->num_rx_desc; ++i) {
2276 error = igb_newbuf(rxr, i, TRUE);
2281 /* Setup our descriptor indices */
2282 rxr->next_to_check = 0;
2286 rxr->discard = FALSE;
2292 igb_init_rx_unit(struct igb_softc *sc)
2294 struct ifnet *ifp = &sc->arpcom.ac_if;
2295 struct e1000_hw *hw = &sc->hw;
2296 uint32_t rctl, rxcsum, srrctl = 0;
2300 * Make sure receives are disabled while setting
2301 * up the descriptor ring
2303 rctl = E1000_READ_REG(hw, E1000_RCTL);
2304 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2308 ** Set up for header split
2310 if (igb_header_split) {
2311 /* Use a standard mbuf for the header */
2312 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2313 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2316 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2319 ** Set up for jumbo frames
2321 if (ifp->if_mtu > ETHERMTU) {
2322 rctl |= E1000_RCTL_LPE;
2324 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2325 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2326 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2327 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2328 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2329 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2331 /* Set maximum packet len */
2332 psize = adapter->max_frame_size;
2333 /* are we on a vlan? */
2334 if (adapter->ifp->if_vlantrunk != NULL)
2335 psize += VLAN_TAG_SIZE;
2336 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2338 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2339 rctl |= E1000_RCTL_SZ_2048;
2342 rctl &= ~E1000_RCTL_LPE;
2343 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2344 rctl |= E1000_RCTL_SZ_2048;
2347 /* Setup the Base and Length of the Rx Descriptor Rings */
2348 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2349 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2350 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2353 E1000_WRITE_REG(hw, E1000_RDLEN(i),
2354 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
2355 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2356 (uint32_t)(bus_addr >> 32));
2357 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2358 (uint32_t)bus_addr);
2359 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2360 /* Enable this Queue */
2361 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2362 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2363 rxdctl &= 0xFFF00000;
2364 rxdctl |= IGB_RX_PTHRESH;
2365 rxdctl |= IGB_RX_HTHRESH << 8;
2367 * Don't set WTHRESH to a value above 1 on 82576, see:
2368 * 82576 specification update errata #26
2370 rxdctl |= IGB_RX_WTHRESH << 16;
2371 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2374 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2375 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2378 * Receive Checksum Offload for TCP and UDP
2380 * Checksum offloading is also enabled if multiple receive
2381 * queue is to be supported, since we need it to figure out
2384 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2387 * PCSD must be enabled to enable multiple
2390 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2393 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2396 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2398 if (IGB_ENABLE_HWRSS(sc)) {
2399 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
2400 uint32_t reta_shift;
2405 * When we reach here, RSS has already been disabled
2406 * in igb_stop(), so we could safely configure RSS key
2407 * and redirect table.
2413 toeplitz_get_key(key, sizeof(key));
2414 for (i = 0; i < IGB_NRSSRK; ++i) {
2417 rssrk = IGB_RSSRK_VAL(key, i);
2418 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2420 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
2424 * Configure RSS redirect table in following fashion:
2425 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2427 reta_shift = IGB_RETA_SHIFT;
2428 if (hw->mac.type == e1000_82575)
2429 reta_shift = IGB_RETA_SHIFT_82575;
2432 for (j = 0; j < IGB_NRETA; ++j) {
2435 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2438 q = (r % sc->rx_ring_inuse) << reta_shift;
2439 reta |= q << (8 * i);
2442 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2443 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2447 * Enable multiple receive queues.
2448 * Enable IPv4 RSS standard hash functions.
2449 * Disable RSS interrupt on 82575
2451 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2452 E1000_MRQC_ENABLE_RSS_4Q |
2453 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2454 E1000_MRQC_RSS_FIELD_IPV4);
2457 /* Setup the Receive Control Register */
2458 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2459 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2460 E1000_RCTL_RDMTS_HALF |
2461 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2462 /* Strip CRC bytes. */
2463 rctl |= E1000_RCTL_SECRC;
2464 /* Make sure VLAN Filters are off */
2465 rctl &= ~E1000_RCTL_VFE;
2466 /* Don't store bad packets */
2467 rctl &= ~E1000_RCTL_SBP;
2469 /* Enable Receives */
2470 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2473 * Setup the HW Rx Head and Tail Descriptor Pointers
2474 * - needs to be after enable
2476 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2477 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2479 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
2480 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
2485 igb_rx_refresh(struct igb_rx_ring *rxr, int i)
2488 i = rxr->num_rx_desc - 1;
2489 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2493 igb_rxeof(struct igb_rx_ring *rxr, int count)
2495 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2496 union e1000_adv_rx_desc *cur;
2500 i = rxr->next_to_check;
2501 cur = &rxr->rx_base[i];
2502 staterr = le32toh(cur->wb.upper.status_error);
2504 if ((staterr & E1000_RXD_STAT_DD) == 0)
2507 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
2508 struct pktinfo *pi = NULL, pi0;
2509 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2510 struct mbuf *m = NULL;
2513 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2518 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2520 struct mbuf *mp = rxbuf->m_head;
2521 uint32_t hash, hashtype;
2525 len = le16toh(cur->wb.upper.length);
2526 if (rxr->sc->hw.mac.type == e1000_i350 &&
2527 (staterr & E1000_RXDEXT_STATERR_LB))
2528 vlan = be16toh(cur->wb.upper.vlan);
2530 vlan = le16toh(cur->wb.upper.vlan);
2532 hash = le32toh(cur->wb.lower.hi_dword.rss);
2533 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2534 E1000_RXDADV_RSSTYPE_MASK;
2536 IGB_RSS_DPRINTF(rxr->sc, 10,
2537 "ring%d, hash 0x%08x, hashtype %u\n",
2538 rxr->me, hash, hashtype);
2540 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2541 BUS_DMASYNC_POSTREAD);
2543 if (igb_newbuf(rxr, i, FALSE) != 0) {
2549 if (rxr->fmp == NULL) {
2550 mp->m_pkthdr.len = len;
2554 rxr->lmp->m_next = mp;
2555 rxr->lmp = rxr->lmp->m_next;
2556 rxr->fmp->m_pkthdr.len += len;
2564 m->m_pkthdr.rcvif = ifp;
2567 if (ifp->if_capenable & IFCAP_RXCSUM)
2568 igb_rxcsum(staterr, m);
2570 if (staterr & E1000_RXD_STAT_VP) {
2571 m->m_pkthdr.ether_vlantag = vlan;
2572 m->m_flags |= M_VLANTAG;
2575 if (ifp->if_capenable & IFCAP_RSS) {
2576 pi = igb_rssinfo(m, &pi0,
2577 hash, hashtype, staterr);
2579 #ifdef IGB_RSS_DEBUG
2586 igb_setup_rxdesc(cur, rxbuf);
2588 rxr->discard = TRUE;
2590 rxr->discard = FALSE;
2591 if (rxr->fmp != NULL) {
2600 ether_input_pkt(ifp, m, pi);
2602 /* Advance our pointers to the next descriptor. */
2603 if (++i == rxr->num_rx_desc)
2606 if (ncoll >= rxr->wreg_nsegs) {
2607 igb_rx_refresh(rxr, i);
2611 cur = &rxr->rx_base[i];
2612 staterr = le32toh(cur->wb.upper.status_error);
2614 rxr->next_to_check = i;
2617 igb_rx_refresh(rxr, i);
2622 igb_set_vlan(struct igb_softc *sc)
2624 struct e1000_hw *hw = &sc->hw;
2627 struct ifnet *ifp = sc->arpcom.ac_if;
2631 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2635 reg = E1000_READ_REG(hw, E1000_CTRL);
2636 reg |= E1000_CTRL_VME;
2637 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2640 /* Enable the Filter Table */
2641 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2642 reg = E1000_READ_REG(hw, E1000_RCTL);
2643 reg &= ~E1000_RCTL_CFIEN;
2644 reg |= E1000_RCTL_VFE;
2645 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2649 /* Update the frame size */
2650 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2651 sc->max_frame_size + VLAN_TAG_SIZE);
2654 /* Don't bother with table if no vlans */
2655 if ((adapter->num_vlans == 0) ||
2656 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2659 ** A soft reset zero's out the VFTA, so
2660 ** we need to repopulate it now.
2662 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2663 if (adapter->shadow_vfta[i] != 0) {
2664 if (adapter->vf_ifp)
2665 e1000_vfta_set_vf(hw,
2666 adapter->shadow_vfta[i], TRUE);
2668 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2669 i, adapter->shadow_vfta[i]);
2675 igb_enable_intr(struct igb_softc *sc)
2677 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2678 lwkt_serialize_handler_enable(&sc->main_serialize);
2682 for (i = 0; i < sc->msix_cnt; ++i) {
2683 lwkt_serialize_handler_enable(
2684 sc->msix_data[i].msix_serialize);
2688 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2689 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
2690 E1000_WRITE_REG(&sc->hw, E1000_EIAC, sc->intr_mask);
2692 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2693 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2694 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2695 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2697 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2699 E1000_WRITE_FLUSH(&sc->hw);
2703 igb_disable_intr(struct igb_softc *sc)
2705 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2706 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2707 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2709 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2710 E1000_WRITE_FLUSH(&sc->hw);
2712 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2713 lwkt_serialize_handler_disable(&sc->main_serialize);
2717 for (i = 0; i < sc->msix_cnt; ++i) {
2718 lwkt_serialize_handler_disable(
2719 sc->msix_data[i].msix_serialize);
2725 * Bit of a misnomer, what this really means is
2726 * to enable OS management of the system... aka
2727 * to disable special hardware management features
2730 igb_get_mgmt(struct igb_softc *sc)
2732 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2733 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2734 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2736 /* disable hardware interception of ARP */
2737 manc &= ~E1000_MANC_ARP_EN;
2739 /* enable receiving management packets to the host */
2740 manc |= E1000_MANC_EN_MNG2HOST;
2741 manc2h |= 1 << 5; /* Mng Port 623 */
2742 manc2h |= 1 << 6; /* Mng Port 664 */
2743 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2744 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2749 * Give control back to hardware management controller
2753 igb_rel_mgmt(struct igb_softc *sc)
2755 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2756 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2758 /* Re-enable hardware interception of ARP */
2759 manc |= E1000_MANC_ARP_EN;
2760 manc &= ~E1000_MANC_EN_MNG2HOST;
2762 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2767 * Sets CTRL_EXT:DRV_LOAD bit.
2769 * For ASF and Pass Through versions of f/w this means that
2770 * the driver is loaded.
2773 igb_get_hw_control(struct igb_softc *sc)
2780 /* Let firmware know the driver has taken over */
2781 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2782 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2783 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2787 * Resets CTRL_EXT:DRV_LOAD bit.
2789 * For ASF and Pass Through versions of f/w this means that the
2790 * driver is no longer loaded.
2793 igb_rel_hw_control(struct igb_softc *sc)
2800 /* Let firmware taken over control of h/w */
2801 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2802 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2803 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2807 igb_is_valid_ether_addr(const uint8_t *addr)
2809 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2811 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2817 * Enable PCI Wake On Lan capability
2820 igb_enable_wol(device_t dev)
2822 uint16_t cap, status;
2825 /* First find the capabilities pointer*/
2826 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2828 /* Read the PM Capabilities */
2829 id = pci_read_config(dev, cap, 1);
2830 if (id != PCIY_PMG) /* Something wrong */
2834 * OK, we have the power capabilities,
2835 * so now get the status register
2837 cap += PCIR_POWER_STATUS;
2838 status = pci_read_config(dev, cap, 2);
2839 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2840 pci_write_config(dev, cap, status, 2);
2844 igb_update_stats_counters(struct igb_softc *sc)
2846 struct e1000_hw *hw = &sc->hw;
2847 struct e1000_hw_stats *stats;
2848 struct ifnet *ifp = &sc->arpcom.ac_if;
2851 * The virtual function adapter has only a
2852 * small controlled set of stats, do only
2856 igb_update_vf_stats_counters(sc);
2861 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2862 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2864 E1000_READ_REG(hw,E1000_SYMERRS);
2865 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2868 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2869 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2870 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2871 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2873 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2874 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2875 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2876 stats->dc += E1000_READ_REG(hw, E1000_DC);
2877 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2878 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2879 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2882 * For watchdog management we need to know if we have been
2883 * paused during the last interval, so capture that here.
2885 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2886 stats->xoffrxc += sc->pause_frames;
2887 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2888 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2889 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2890 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2891 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2892 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2893 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2894 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2895 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2896 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2897 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2898 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2900 /* For the 64-bit byte counters the low dword must be read first. */
2901 /* Both registers clear on the read of the high dword */
2903 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2904 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2905 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2906 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2908 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2909 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2910 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2911 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2912 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2914 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2915 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2917 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2918 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2919 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2920 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2921 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2922 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2923 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2924 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2925 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2926 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2928 /* Interrupt Counts */
2930 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2931 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2932 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2933 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2934 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2935 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2936 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2937 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2938 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2940 /* Host to Card Statistics */
2942 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2943 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2944 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2945 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2946 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2947 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2948 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2949 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2950 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2951 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2952 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2953 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2954 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2955 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2957 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2958 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2959 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2960 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2961 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2962 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2964 ifp->if_collisions = stats->colc;
2967 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2968 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2971 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2973 /* Driver specific counters */
2974 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2975 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2976 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2977 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2978 sc->packet_buf_alloc_tx =
2979 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2980 sc->packet_buf_alloc_rx =
2981 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2985 igb_vf_init_stats(struct igb_softc *sc)
2987 struct e1000_hw *hw = &sc->hw;
2988 struct e1000_vf_stats *stats;
2991 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2992 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2993 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2994 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2995 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
2999 igb_update_vf_stats_counters(struct igb_softc *sc)
3001 struct e1000_hw *hw = &sc->hw;
3002 struct e1000_vf_stats *stats;
3004 if (sc->link_speed == 0)
3008 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
3009 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
3010 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
3011 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
3012 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
3015 #ifdef IFPOLL_ENABLE
3018 igb_npoll_status(struct ifnet *ifp)
3020 struct igb_softc *sc = ifp->if_softc;
3023 ASSERT_SERIALIZED(&sc->main_serialize);
3025 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3026 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3027 sc->hw.mac.get_link_status = 1;
3028 igb_update_link_status(sc);
3033 igb_npoll_tx(struct ifnet *ifp, void *arg, int cycle __unused)
3035 struct igb_tx_ring *txr = arg;
3037 ASSERT_SERIALIZED(&txr->tx_serialize);
3040 if (!ifsq_is_empty(txr->ifsq))
3041 ifsq_devstart(txr->ifsq);
3045 igb_npoll_rx(struct ifnet *ifp __unused, void *arg, int cycle)
3047 struct igb_rx_ring *rxr = arg;
3049 ASSERT_SERIALIZED(&rxr->rx_serialize);
3051 igb_rxeof(rxr, cycle);
3055 igb_npoll(struct ifnet *ifp, struct ifpoll_info *info)
3057 struct igb_softc *sc = ifp->if_softc;
3058 int i, txr_cnt, rxr_cnt;
3060 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3065 info->ifpi_status.status_func = igb_npoll_status;
3066 info->ifpi_status.serializer = &sc->main_serialize;
3068 txr_cnt = igb_get_txring_inuse(sc, TRUE);
3069 off = sc->tx_npoll_off;
3070 for (i = 0; i < txr_cnt; ++i) {
3071 struct igb_tx_ring *txr = &sc->tx_rings[i];
3074 KKASSERT(idx < ncpus2);
3075 info->ifpi_tx[idx].poll_func = igb_npoll_tx;
3076 info->ifpi_tx[idx].arg = txr;
3077 info->ifpi_tx[idx].serializer = &txr->tx_serialize;
3078 ifsq_set_cpuid(txr->ifsq, idx);
3081 rxr_cnt = igb_get_rxring_inuse(sc, TRUE);
3082 off = sc->rx_npoll_off;
3083 for (i = 0; i < rxr_cnt; ++i) {
3084 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3087 KKASSERT(idx < ncpus2);
3088 info->ifpi_rx[idx].poll_func = igb_npoll_rx;
3089 info->ifpi_rx[idx].arg = rxr;
3090 info->ifpi_rx[idx].serializer = &rxr->rx_serialize;
3093 if (ifp->if_flags & IFF_RUNNING) {
3094 if (rxr_cnt == sc->rx_ring_inuse &&
3095 txr_cnt == sc->tx_ring_inuse)
3096 igb_disable_intr(sc);
3101 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3102 struct igb_tx_ring *txr = &sc->tx_rings[i];
3104 ifsq_set_cpuid(txr->ifsq, txr->tx_intr_cpuid);
3107 if (ifp->if_flags & IFF_RUNNING) {
3108 txr_cnt = igb_get_txring_inuse(sc, FALSE);
3109 rxr_cnt = igb_get_rxring_inuse(sc, FALSE);
3111 if (rxr_cnt == sc->rx_ring_inuse &&
3112 txr_cnt == sc->tx_ring_inuse)
3113 igb_enable_intr(sc);
3120 #endif /* IFPOLL_ENABLE */
3125 struct igb_softc *sc = xsc;
3126 struct ifnet *ifp = &sc->arpcom.ac_if;
3129 ASSERT_SERIALIZED(&sc->main_serialize);
3131 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
3136 if (ifp->if_flags & IFF_RUNNING) {
3137 struct igb_tx_ring *txr = &sc->tx_rings[0];
3140 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3141 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3143 if (eicr & rxr->rx_intr_mask) {
3144 lwkt_serialize_enter(&rxr->rx_serialize);
3146 lwkt_serialize_exit(&rxr->rx_serialize);
3150 if (eicr & txr->tx_intr_mask) {
3151 lwkt_serialize_enter(&txr->tx_serialize);
3153 if (!ifsq_is_empty(txr->ifsq))
3154 ifsq_devstart(txr->ifsq);
3155 lwkt_serialize_exit(&txr->tx_serialize);
3159 if (eicr & E1000_EICR_OTHER) {
3160 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3162 /* Link status change */
3163 if (icr & E1000_ICR_LSC) {
3164 sc->hw.mac.get_link_status = 1;
3165 igb_update_link_status(sc);
3170 * Reading EICR has the side effect to clear interrupt mask,
3171 * so all interrupts need to be enabled here.
3173 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
3177 igb_intr_shared(void *xsc)
3179 struct igb_softc *sc = xsc;
3180 struct ifnet *ifp = &sc->arpcom.ac_if;
3183 ASSERT_SERIALIZED(&sc->main_serialize);
3185 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3188 if (reg_icr == 0xffffffff)
3191 /* Definitely not our interrupt. */
3195 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3198 if (ifp->if_flags & IFF_RUNNING) {
3200 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3203 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3204 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3206 lwkt_serialize_enter(&rxr->rx_serialize);
3208 lwkt_serialize_exit(&rxr->rx_serialize);
3212 if (reg_icr & E1000_ICR_TXDW) {
3213 struct igb_tx_ring *txr = &sc->tx_rings[0];
3215 lwkt_serialize_enter(&txr->tx_serialize);
3217 if (!ifsq_is_empty(txr->ifsq))
3218 ifsq_devstart(txr->ifsq);
3219 lwkt_serialize_exit(&txr->tx_serialize);
3223 /* Link status change */
3224 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3225 sc->hw.mac.get_link_status = 1;
3226 igb_update_link_status(sc);
3229 if (reg_icr & E1000_ICR_RXO)
3234 igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp,
3235 int *segs_used, int *idx)
3237 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3239 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3240 union e1000_adv_tx_desc *txd = NULL;
3241 struct mbuf *m_head = *m_headp;
3242 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3243 int maxsegs, nsegs, i, j, error;
3244 uint32_t hdrlen = 0;
3246 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3247 error = igb_tso_pullup(txr, m_headp);
3253 /* Set basic descriptor constants */
3254 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3255 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3256 if (m_head->m_flags & M_VLANTAG)
3257 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3260 * Map the packet for DMA.
3262 tx_buf = &txr->tx_buf[txr->next_avail_desc];
3263 tx_buf_mapped = tx_buf;
3266 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3267 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
3268 if (maxsegs > IGB_MAX_SCATTER)
3269 maxsegs = IGB_MAX_SCATTER;
3271 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3272 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3274 if (error == ENOBUFS)
3275 txr->sc->mbuf_defrag_failed++;
3277 txr->sc->no_tx_dma_setup++;
3283 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3288 * Set up the TX context descriptor, if any hardware offloading is
3289 * needed. This includes CSUM, VLAN, and TSO. It will consume one
3292 * Unlike these chips' predecessors (em/emx), TX context descriptor
3293 * will _not_ interfere TX data fetching pipelining.
3295 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3296 igb_tso_ctx(txr, m_head, &hdrlen);
3297 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3298 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3299 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3302 } else if (igb_txcsum_ctx(txr, m_head)) {
3303 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
3304 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
3305 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3306 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
3311 *segs_used += nsegs;
3312 txr->tx_nsegs += nsegs;
3313 if (txr->tx_nsegs >= txr->intr_nsegs) {
3315 * Report Status (RS) is turned on every intr_nsegs
3316 * descriptors (roughly).
3319 cmd_rs = E1000_ADVTXD_DCMD_RS;
3322 /* Calculate payload length */
3323 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3324 << E1000_ADVTXD_PAYLEN_SHIFT);
3326 /* 82575 needs the queue index added */
3327 if (txr->sc->hw.mac.type == e1000_82575)
3328 olinfo_status |= txr->me << 4;
3330 /* Set up our transmit descriptors */
3331 i = txr->next_avail_desc;
3332 for (j = 0; j < nsegs; j++) {
3334 bus_addr_t seg_addr;
3336 tx_buf = &txr->tx_buf[i];
3337 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3338 seg_addr = segs[j].ds_addr;
3339 seg_len = segs[j].ds_len;
3341 txd->read.buffer_addr = htole64(seg_addr);
3342 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3343 txd->read.olinfo_status = htole32(olinfo_status);
3344 if (++i == txr->num_tx_desc)
3346 tx_buf->m_head = NULL;
3349 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3350 txr->next_avail_desc = i;
3351 txr->tx_avail -= nsegs;
3353 tx_buf->m_head = m_head;
3354 tx_buf_mapped->map = tx_buf->map;
3358 * Last Descriptor of Packet needs End Of Packet (EOP)
3360 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
3363 * Defer TDT updating, until enough descrptors are setup
3366 #ifdef IGB_TSS_DEBUG
3374 igb_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
3376 struct igb_softc *sc = ifp->if_softc;
3377 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3378 struct mbuf *m_head;
3379 int idx = -1, nsegs = 0;
3381 KKASSERT(txr->ifsq == ifsq);
3382 ASSERT_SERIALIZED(&txr->tx_serialize);
3384 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifsq_is_oactive(ifsq))
3387 if (!sc->link_active || (txr->tx_flags & IGB_TXFLAG_ENABLED) == 0) {
3392 if (!IGB_IS_NOT_OACTIVE(txr))
3395 while (!ifsq_is_empty(ifsq)) {
3396 if (IGB_IS_OACTIVE(txr)) {
3397 ifsq_set_oactive(ifsq);
3398 /* Set watchdog on */
3399 txr->tx_watchdog.wd_timer = 5;
3403 m_head = ifsq_dequeue(ifsq, NULL);
3407 if (igb_encap(txr, &m_head, &nsegs, &idx)) {
3412 if (nsegs >= txr->wreg_nsegs) {
3413 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3418 /* Send a copy of the frame to the BPF listener */
3419 ETHER_BPF_MTAP(ifp, m_head);
3422 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3426 igb_watchdog(struct ifaltq_subque *ifsq)
3428 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3429 struct ifnet *ifp = ifsq_get_ifp(ifsq);
3430 struct igb_softc *sc = ifp->if_softc;
3433 KKASSERT(txr->ifsq == ifsq);
3434 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3437 * If flow control has paused us since last checking
3438 * it invalidates the watchdog timing, so dont run it.
3440 if (sc->pause_frames) {
3441 sc->pause_frames = 0;
3442 txr->tx_watchdog.wd_timer = 5;
3446 if_printf(ifp, "Watchdog timeout -- resetting\n");
3447 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3448 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3449 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3450 if_printf(ifp, "TX(%d) desc avail = %d, "
3451 "Next TX to Clean = %d\n",
3452 txr->me, txr->tx_avail, txr->next_to_clean);
3455 sc->watchdog_events++;
3458 for (i = 0; i < sc->tx_ring_inuse; ++i)
3459 ifsq_devstart_sched(sc->tx_rings[i].ifsq);
3463 igb_set_eitr(struct igb_softc *sc, int idx, int rate)
3468 if (sc->hw.mac.type == e1000_82575) {
3469 eitr = 1000000000 / 256 / rate;
3472 * Document is wrong on the 2 bits left shift
3475 eitr = 1000000 / rate;
3476 eitr <<= IGB_EITR_INTVL_SHIFT;
3480 /* Don't disable it */
3481 eitr = 1 << IGB_EITR_INTVL_SHIFT;
3482 } else if (eitr > IGB_EITR_INTVL_MASK) {
3483 /* Don't allow it to be too large */
3484 eitr = IGB_EITR_INTVL_MASK;
3487 if (sc->hw.mac.type == e1000_82575)
3490 eitr |= E1000_EITR_CNT_IGNR;
3491 E1000_WRITE_REG(&sc->hw, E1000_EITR(idx), eitr);
3495 igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3497 struct igb_softc *sc = (void *)arg1;
3498 struct ifnet *ifp = &sc->arpcom.ac_if;
3499 int error, intr_rate;
3501 intr_rate = sc->intr_rate;
3502 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3503 if (error || req->newptr == NULL)
3508 ifnet_serialize_all(ifp);
3510 sc->intr_rate = intr_rate;
3511 if (ifp->if_flags & IFF_RUNNING)
3512 igb_set_eitr(sc, 0, sc->intr_rate);
3515 if_printf(ifp, "interrupt rate set to %d/sec\n", sc->intr_rate);
3517 ifnet_deserialize_all(ifp);
3523 igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS)
3525 struct igb_msix_data *msix = (void *)arg1;
3526 struct igb_softc *sc = msix->msix_sc;
3527 struct ifnet *ifp = &sc->arpcom.ac_if;
3528 int error, msix_rate;
3530 msix_rate = msix->msix_rate;
3531 error = sysctl_handle_int(oidp, &msix_rate, 0, req);
3532 if (error || req->newptr == NULL)
3537 lwkt_serialize_enter(msix->msix_serialize);
3539 msix->msix_rate = msix_rate;
3540 if (ifp->if_flags & IFF_RUNNING)
3541 igb_set_eitr(sc, msix->msix_vector, msix->msix_rate);
3544 if_printf(ifp, "%s set to %d/sec\n", msix->msix_rate_desc,
3548 lwkt_serialize_exit(msix->msix_serialize);
3554 igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3556 struct igb_softc *sc = (void *)arg1;
3557 struct ifnet *ifp = &sc->arpcom.ac_if;
3558 struct igb_tx_ring *txr = &sc->tx_rings[0];
3561 nsegs = txr->intr_nsegs;
3562 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3563 if (error || req->newptr == NULL)
3568 ifnet_serialize_all(ifp);
3570 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
3571 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3577 for (i = 0; i < sc->tx_ring_cnt; ++i)
3578 sc->tx_rings[i].intr_nsegs = nsegs;
3581 ifnet_deserialize_all(ifp);
3587 igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3589 struct igb_softc *sc = (void *)arg1;
3590 struct ifnet *ifp = &sc->arpcom.ac_if;
3591 int error, nsegs, i;
3593 nsegs = sc->rx_rings[0].wreg_nsegs;
3594 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3595 if (error || req->newptr == NULL)
3598 ifnet_serialize_all(ifp);
3599 for (i = 0; i < sc->rx_ring_cnt; ++i)
3600 sc->rx_rings[i].wreg_nsegs =nsegs;
3601 ifnet_deserialize_all(ifp);
3607 igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3609 struct igb_softc *sc = (void *)arg1;
3610 struct ifnet *ifp = &sc->arpcom.ac_if;
3611 int error, nsegs, i;
3613 nsegs = sc->tx_rings[0].wreg_nsegs;
3614 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3615 if (error || req->newptr == NULL)
3618 ifnet_serialize_all(ifp);
3619 for (i = 0; i < sc->tx_ring_cnt; ++i)
3620 sc->tx_rings[i].wreg_nsegs =nsegs;
3621 ifnet_deserialize_all(ifp);
3626 #ifdef IFPOLL_ENABLE
3629 igb_sysctl_npoll_rxoff(SYSCTL_HANDLER_ARGS)
3631 struct igb_softc *sc = (void *)arg1;
3632 struct ifnet *ifp = &sc->arpcom.ac_if;
3635 off = sc->rx_npoll_off;
3636 error = sysctl_handle_int(oidp, &off, 0, req);
3637 if (error || req->newptr == NULL)
3642 ifnet_serialize_all(ifp);
3643 if (off >= ncpus2 || off % sc->rx_ring_cnt != 0) {
3647 sc->rx_npoll_off = off;
3649 ifnet_deserialize_all(ifp);
3655 igb_sysctl_npoll_txoff(SYSCTL_HANDLER_ARGS)
3657 struct igb_softc *sc = (void *)arg1;
3658 struct ifnet *ifp = &sc->arpcom.ac_if;
3661 off = sc->tx_npoll_off;
3662 error = sysctl_handle_int(oidp, &off, 0, req);
3663 if (error || req->newptr == NULL)
3668 ifnet_serialize_all(ifp);
3669 if (off >= ncpus2 || off % sc->tx_ring_cnt != 0) {
3673 sc->tx_npoll_off = off;
3675 ifnet_deserialize_all(ifp);
3680 #endif /* IFPOLL_ENABLE */
3683 igb_init_intr(struct igb_softc *sc)
3685 igb_set_intr_mask(sc);
3687 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0)
3688 igb_init_unshared_intr(sc);
3690 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
3691 igb_set_eitr(sc, 0, sc->intr_rate);
3695 for (i = 0; i < sc->msix_cnt; ++i)
3696 igb_set_eitr(sc, i, sc->msix_data[i].msix_rate);
3701 igb_init_unshared_intr(struct igb_softc *sc)
3703 struct e1000_hw *hw = &sc->hw;
3704 const struct igb_rx_ring *rxr;
3705 const struct igb_tx_ring *txr;
3706 uint32_t ivar, index;
3710 * Enable extended mode
3712 if (sc->hw.mac.type != e1000_82575) {
3716 gpie = E1000_GPIE_NSICR;
3717 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3718 gpie |= E1000_GPIE_MSIX_MODE |
3722 E1000_WRITE_REG(hw, E1000_GPIE, gpie);
3727 switch (sc->hw.mac.type) {
3729 ivar_max = IGB_MAX_IVAR_82580;
3733 ivar_max = IGB_MAX_IVAR_I350;
3737 case e1000_vfadapt_i350:
3738 ivar_max = IGB_MAX_IVAR_VF;
3742 ivar_max = IGB_MAX_IVAR_82576;
3746 panic("unknown mac type %d\n", sc->hw.mac.type);
3748 for (i = 0; i < ivar_max; ++i)
3749 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, i, 0);
3750 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
3754 KASSERT(sc->intr_type != PCI_INTR_TYPE_MSIX,
3755 ("82575 w/ MSI-X"));
3756 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3757 tmp |= E1000_CTRL_EXT_IRCA;
3758 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3762 * Map TX/RX interrupts to EICR
3764 switch (sc->hw.mac.type) {
3768 case e1000_vfadapt_i350:
3770 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3771 rxr = &sc->rx_rings[i];
3774 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3779 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3783 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3785 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3788 for (i = 0; i < sc->tx_ring_inuse; ++i) {
3789 txr = &sc->tx_rings[i];
3792 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3797 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3801 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3803 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3805 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3806 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3807 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3813 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3814 rxr = &sc->rx_rings[i];
3816 index = i & 0x7; /* Each IVAR has two entries */
3817 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3822 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3826 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3828 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3831 for (i = 0; i < sc->tx_ring_inuse; ++i) {
3832 txr = &sc->tx_rings[i];
3834 index = i & 0x7; /* Each IVAR has two entries */
3835 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3840 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3844 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3846 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3848 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3849 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3850 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3856 * Enable necessary interrupt bits.
3858 * The name of the register is confusing; in addition to
3859 * configuring the first vector of MSI-X, it also configures
3860 * which bits of EICR could be set by the hardware even when
3861 * MSI or line interrupt is used; it thus controls interrupt
3862 * generation. It MUST be configured explicitly; the default
3863 * value mentioned in the datasheet is wrong: RX queue0 and
3864 * TX queue0 are NOT enabled by default.
3866 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3870 panic("unknown mac type %d\n", sc->hw.mac.type);
3875 igb_setup_intr(struct igb_softc *sc)
3879 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3880 return igb_msix_setup(sc);
3882 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
3883 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_intr_shared : igb_intr,
3884 sc, &sc->intr_tag, &sc->main_serialize);
3886 device_printf(sc->dev, "Failed to register interrupt handler");
3889 sc->tx_rings[0].tx_intr_cpuid = rman_get_cpuid(sc->intr_res);
3895 igb_set_txintr_mask(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
3897 if (txr->sc->hw.mac.type == e1000_82575) {
3898 txr->tx_intr_bit = 0; /* unused */
3901 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3904 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3907 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3910 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3913 panic("unsupported # of TX ring, %d\n", txr->me);
3916 int intr_bit = *intr_bit0;
3918 txr->tx_intr_bit = intr_bit % intr_bitmax;
3919 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
3921 *intr_bit0 = intr_bit + 1;
3926 igb_set_rxintr_mask(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
3928 if (rxr->sc->hw.mac.type == e1000_82575) {
3929 rxr->rx_intr_bit = 0; /* unused */
3932 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3935 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3938 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3941 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3944 panic("unsupported # of RX ring, %d\n", rxr->me);
3947 int intr_bit = *intr_bit0;
3949 rxr->rx_intr_bit = intr_bit % intr_bitmax;
3950 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
3952 *intr_bit0 = intr_bit + 1;
3957 igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3959 struct igb_softc *sc = ifp->if_softc;
3961 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3962 sc->tx_serialize, sc->rx_serialize, slz);
3966 igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3968 struct igb_softc *sc = ifp->if_softc;
3970 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3971 sc->tx_serialize, sc->rx_serialize, slz);
3975 igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3977 struct igb_softc *sc = ifp->if_softc;
3979 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3980 sc->tx_serialize, sc->rx_serialize, slz);
3986 igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3987 boolean_t serialized)
3989 struct igb_softc *sc = ifp->if_softc;
3991 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3992 sc->tx_serialize, sc->rx_serialize, slz, serialized);
3995 #endif /* INVARIANTS */
3998 igb_set_intr_mask(struct igb_softc *sc)
4002 sc->intr_mask = sc->sts_intr_mask;
4003 for (i = 0; i < sc->rx_ring_inuse; ++i)
4004 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
4005 for (i = 0; i < sc->tx_ring_inuse; ++i)
4006 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
4008 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",
4014 igb_alloc_intr(struct igb_softc *sc)
4016 int i, intr_bit, intr_bitmax;
4019 igb_msix_try_alloc(sc);
4020 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
4024 * Allocate MSI/legacy interrupt resource
4026 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
4027 &sc->intr_rid, &intr_flags);
4029 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
4032 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
4034 sc->flags |= IGB_FLAG_SHARED_INTR;
4036 device_printf(sc->dev, "IRQ shared\n");
4038 intr_flags &= ~RF_SHAREABLE;
4040 device_printf(sc->dev, "IRQ unshared\n");
4044 sc->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4045 &sc->intr_rid, intr_flags);
4046 if (sc->intr_res == NULL) {
4047 device_printf(sc->dev, "Unable to allocate bus resource: "
4053 * Setup MSI/legacy interrupt mask
4055 switch (sc->hw.mac.type) {
4057 intr_bitmax = IGB_MAX_TXRXINT_82575;
4060 intr_bitmax = IGB_MAX_TXRXINT_82580;
4063 intr_bitmax = IGB_MAX_TXRXINT_I350;
4066 intr_bitmax = IGB_MAX_TXRXINT_82576;
4069 intr_bitmax = IGB_MIN_TXRXINT;
4073 for (i = 0; i < sc->tx_ring_cnt; ++i)
4074 igb_set_txintr_mask(&sc->tx_rings[i], &intr_bit, intr_bitmax);
4075 for (i = 0; i < sc->rx_ring_cnt; ++i)
4076 igb_set_rxintr_mask(&sc->rx_rings[i], &intr_bit, intr_bitmax);
4077 sc->sts_intr_bit = 0;
4078 sc->sts_intr_mask = E1000_EICR_OTHER;
4080 /* Initialize interrupt rate */
4081 sc->intr_rate = IGB_INTR_RATE;
4083 igb_set_ring_inuse(sc, FALSE);
4084 igb_set_intr_mask(sc);
4089 igb_free_intr(struct igb_softc *sc)
4091 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
4092 if (sc->intr_res != NULL) {
4093 bus_release_resource(sc->dev, SYS_RES_IRQ, sc->intr_rid,
4096 if (sc->intr_type == PCI_INTR_TYPE_MSI)
4097 pci_release_msi(sc->dev);
4099 igb_msix_free(sc, TRUE);
4104 igb_teardown_intr(struct igb_softc *sc)
4106 if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4107 bus_teardown_intr(sc->dev, sc->intr_res, sc->intr_tag);
4109 igb_msix_teardown(sc, sc->msix_cnt);
4113 igb_msix_try_alloc(struct igb_softc *sc)
4115 int msix_enable, msix_cnt, msix_cnt2, alloc_cnt;
4117 struct igb_msix_data *msix;
4118 boolean_t aggregate, setup = FALSE;
4121 * Don't enable MSI-X on 82575, see:
4122 * 82575 specification update errata #25
4124 if (sc->hw.mac.type == e1000_82575)
4127 /* Don't enable MSI-X on VF */
4131 msix_enable = device_getenv_int(sc->dev, "msix.enable",
4136 msix_cnt = pci_msix_count(sc->dev);
4137 #ifdef IGB_MSIX_DEBUG
4138 msix_cnt = device_getenv_int(sc->dev, "msix.count", msix_cnt);
4140 if (msix_cnt <= 1) {
4141 /* One MSI-X model does not make sense */
4146 while ((1 << (i + 1)) <= msix_cnt)
4151 device_printf(sc->dev, "MSI-X count %d/%d\n",
4152 msix_cnt2, msix_cnt);
4155 KKASSERT(msix_cnt2 <= msix_cnt);
4156 if (msix_cnt == msix_cnt2) {
4157 /* We need at least one MSI-X for link status */
4159 if (msix_cnt2 <= 1) {
4160 /* One MSI-X for RX/TX does not make sense */
4161 device_printf(sc->dev, "not enough MSI-X for TX/RX, "
4162 "MSI-X count %d/%d\n", msix_cnt2, msix_cnt);
4165 KKASSERT(msix_cnt > msix_cnt2);
4168 device_printf(sc->dev, "MSI-X count fixup %d/%d\n",
4169 msix_cnt2, msix_cnt);
4173 sc->rx_ring_msix = sc->rx_ring_cnt;
4174 if (sc->rx_ring_msix > msix_cnt2)
4175 sc->rx_ring_msix = msix_cnt2;
4177 sc->tx_ring_msix = sc->tx_ring_cnt;
4178 if (sc->tx_ring_msix > msix_cnt2)
4179 sc->tx_ring_msix = msix_cnt2;
4181 if (msix_cnt >= sc->tx_ring_msix + sc->rx_ring_msix + 1) {
4183 * Independent TX/RX MSI-X
4187 device_printf(sc->dev, "independent TX/RX MSI-X\n");
4188 alloc_cnt = sc->tx_ring_msix + sc->rx_ring_msix;
4191 * Aggregate TX/RX MSI-X
4195 device_printf(sc->dev, "aggregate TX/RX MSI-X\n");
4196 alloc_cnt = msix_cnt2;
4197 if (alloc_cnt > ncpus2)
4199 if (sc->rx_ring_msix > alloc_cnt)
4200 sc->rx_ring_msix = alloc_cnt;
4202 ++alloc_cnt; /* For link status */
4205 device_printf(sc->dev, "MSI-X alloc %d, RX ring %d\n",
4206 alloc_cnt, sc->rx_ring_msix);
4209 sc->msix_mem_rid = PCIR_BAR(IGB_MSIX_BAR);
4210 sc->msix_mem_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
4211 &sc->msix_mem_rid, RF_ACTIVE);
4212 if (sc->msix_mem_res == NULL) {
4213 device_printf(sc->dev, "Unable to map MSI-X table\n");
4217 sc->msix_cnt = alloc_cnt;
4218 sc->msix_data = kmalloc_cachealign(
4219 sizeof(struct igb_msix_data) * sc->msix_cnt,
4220 M_DEVBUF, M_WAITOK | M_ZERO);
4221 for (x = 0; x < sc->msix_cnt; ++x) {
4222 msix = &sc->msix_data[x];
4224 lwkt_serialize_init(&msix->msix_serialize0);
4226 msix->msix_rid = -1;
4227 msix->msix_vector = x;
4228 msix->msix_mask = 1 << msix->msix_vector;
4229 msix->msix_rate = IGB_INTR_RATE;
4234 int offset, offset_def;
4236 if (sc->rx_ring_msix == ncpus2) {
4239 offset_def = (sc->rx_ring_msix *
4240 device_get_unit(sc->dev)) % ncpus2;
4242 offset = device_getenv_int(sc->dev,
4243 "msix.rxoff", offset_def);
4244 if (offset >= ncpus2 ||
4245 offset % sc->rx_ring_msix != 0) {
4246 device_printf(sc->dev,
4247 "invalid msix.rxoff %d, use %d\n",
4248 offset, offset_def);
4249 offset = offset_def;
4254 for (i = 0; i < sc->rx_ring_msix; ++i) {
4255 struct igb_rx_ring *rxr = &sc->rx_rings[i];
4257 KKASSERT(x < sc->msix_cnt);
4258 msix = &sc->msix_data[x++];
4259 rxr->rx_intr_bit = msix->msix_vector;
4260 rxr->rx_intr_mask = msix->msix_mask;
4262 msix->msix_serialize = &rxr->rx_serialize;
4263 msix->msix_func = igb_msix_rx;
4264 msix->msix_arg = rxr;
4265 msix->msix_cpuid = i + offset;
4266 KKASSERT(msix->msix_cpuid < ncpus2);
4267 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc),
4268 "%s rx%d", device_get_nameunit(sc->dev), i);
4269 msix->msix_rate = IGB_MSIX_RX_RATE;
4270 ksnprintf(msix->msix_rate_desc,
4271 sizeof(msix->msix_rate_desc),
4272 "RX%d interrupt rate", i);
4275 offset_def = device_get_unit(sc->dev) % ncpus2;
4276 offset = device_getenv_int(sc->dev, "msix.txoff", offset_def);
4277 if (offset >= ncpus2) {
4278 device_printf(sc->dev, "invalid msix.txoff %d, "
4279 "use %d\n", offset, offset_def);
4280 offset = offset_def;
4284 for (i = 0; i < sc->tx_ring_msix; ++i) {
4285 struct igb_tx_ring *txr = &sc->tx_rings[i];
4287 KKASSERT(x < sc->msix_cnt);
4288 msix = &sc->msix_data[x++];
4289 txr->tx_intr_bit = msix->msix_vector;
4290 txr->tx_intr_mask = msix->msix_mask;
4292 msix->msix_serialize = &txr->tx_serialize;
4293 msix->msix_func = igb_msix_tx;
4294 msix->msix_arg = txr;
4295 msix->msix_cpuid = i + offset;
4296 txr->tx_intr_cpuid = msix->msix_cpuid;
4297 KKASSERT(msix->msix_cpuid < ncpus2);
4298 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc),
4299 "%s tx%d", device_get_nameunit(sc->dev), i);
4300 msix->msix_rate = IGB_MSIX_TX_RATE;
4301 ksnprintf(msix->msix_rate_desc,
4302 sizeof(msix->msix_rate_desc),
4303 "TX%d interrupt rate", i);
4314 KKASSERT(x < sc->msix_cnt);
4315 msix = &sc->msix_data[x++];
4316 sc->sts_intr_bit = msix->msix_vector;
4317 sc->sts_intr_mask = msix->msix_mask;
4319 msix->msix_serialize = &sc->main_serialize;
4320 msix->msix_func = igb_msix_status;
4321 msix->msix_arg = sc;
4322 msix->msix_cpuid = 0; /* TODO tunable */
4323 ksnprintf(msix->msix_desc, sizeof(msix->msix_desc), "%s sts",
4324 device_get_nameunit(sc->dev));
4325 ksnprintf(msix->msix_rate_desc, sizeof(msix->msix_rate_desc),
4326 "status interrupt rate");
4328 KKASSERT(x == sc->msix_cnt);
4330 error = pci_setup_msix(sc->dev);
4332 device_printf(sc->dev, "Setup MSI-X failed\n");
4337 for (i = 0; i < sc->msix_cnt; ++i) {
4338 msix = &sc->msix_data[i];
4340 error = pci_alloc_msix_vector(sc->dev, msix->msix_vector,
4341 &msix->msix_rid, msix->msix_cpuid);
4343 device_printf(sc->dev,
4344 "Unable to allocate MSI-X %d on cpu%d\n",
4345 msix->msix_vector, msix->msix_cpuid);
4349 msix->msix_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4350 &msix->msix_rid, RF_ACTIVE);
4351 if (msix->msix_res == NULL) {
4352 device_printf(sc->dev,
4353 "Unable to allocate MSI-X %d resource\n",
4360 pci_enable_msix(sc->dev);
4361 sc->intr_type = PCI_INTR_TYPE_MSIX;
4364 igb_msix_free(sc, setup);
4368 igb_msix_free(struct igb_softc *sc, boolean_t setup)
4372 KKASSERT(sc->msix_cnt > 1);
4374 for (i = 0; i < sc->msix_cnt; ++i) {
4375 struct igb_msix_data *msix = &sc->msix_data[i];
4377 if (msix->msix_res != NULL) {
4378 bus_release_resource(sc->dev, SYS_RES_IRQ,
4379 msix->msix_rid, msix->msix_res);
4381 if (msix->msix_rid >= 0)
4382 pci_release_msix_vector(sc->dev, msix->msix_rid);
4385 pci_teardown_msix(sc->dev);
4388 kfree(sc->msix_data, M_DEVBUF);
4389 sc->msix_data = NULL;
4393 igb_msix_setup(struct igb_softc *sc)
4397 for (i = 0; i < sc->msix_cnt; ++i) {
4398 struct igb_msix_data *msix = &sc->msix_data[i];
4401 error = bus_setup_intr_descr(sc->dev, msix->msix_res,
4402 INTR_MPSAFE, msix->msix_func, msix->msix_arg,
4403 &msix->msix_handle, msix->msix_serialize, msix->msix_desc);
4405 device_printf(sc->dev, "could not set up %s "
4406 "interrupt handler.\n", msix->msix_desc);
4407 igb_msix_teardown(sc, i);
4415 igb_msix_teardown(struct igb_softc *sc, int msix_cnt)
4419 for (i = 0; i < msix_cnt; ++i) {
4420 struct igb_msix_data *msix = &sc->msix_data[i];
4422 bus_teardown_intr(sc->dev, msix->msix_res, msix->msix_handle);
4427 igb_msix_rx(void *arg)
4429 struct igb_rx_ring *rxr = arg;
4431 ASSERT_SERIALIZED(&rxr->rx_serialize);
4434 E1000_WRITE_REG(&rxr->sc->hw, E1000_EIMS, rxr->rx_intr_mask);
4438 igb_msix_tx(void *arg)
4440 struct igb_tx_ring *txr = arg;
4442 ASSERT_SERIALIZED(&txr->tx_serialize);
4445 if (!ifsq_is_empty(txr->ifsq))
4446 ifsq_devstart(txr->ifsq);
4448 E1000_WRITE_REG(&txr->sc->hw, E1000_EIMS, txr->tx_intr_mask);
4452 igb_msix_status(void *arg)
4454 struct igb_softc *sc = arg;
4457 ASSERT_SERIALIZED(&sc->main_serialize);
4459 icr = E1000_READ_REG(&sc->hw, E1000_ICR);
4460 if (icr & E1000_ICR_LSC) {
4461 sc->hw.mac.get_link_status = 1;
4462 igb_update_link_status(sc);
4465 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->sts_intr_mask);
4469 igb_set_ring_inuse(struct igb_softc *sc, boolean_t polling)
4471 sc->rx_ring_inuse = igb_get_rxring_inuse(sc, polling);
4472 sc->tx_ring_inuse = igb_get_txring_inuse(sc, polling);
4474 if_printf(&sc->arpcom.ac_if, "RX rings %d/%d, TX rings %d/%d\n",
4475 sc->rx_ring_inuse, sc->rx_ring_cnt,
4476 sc->tx_ring_inuse, sc->tx_ring_cnt);
4481 igb_get_rxring_inuse(const struct igb_softc *sc, boolean_t polling)
4483 if (!IGB_ENABLE_HWRSS(sc))
4487 return sc->rx_ring_cnt;
4488 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4489 return IGB_MIN_RING_RSS;
4491 return sc->rx_ring_msix;
4495 igb_get_txring_inuse(const struct igb_softc *sc, boolean_t polling)
4497 if (!IGB_ENABLE_HWTSS(sc))
4501 return sc->tx_ring_cnt;
4502 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4503 return IGB_MIN_RING;
4505 return sc->tx_ring_msix;
4509 igb_tso_pullup(struct igb_tx_ring *txr, struct mbuf **mp)
4511 int hoff, iphlen, thoff;
4515 KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
4517 iphlen = m->m_pkthdr.csum_iphlen;
4518 thoff = m->m_pkthdr.csum_thlen;
4519 hoff = m->m_pkthdr.csum_lhlen;
4521 KASSERT(iphlen > 0, ("invalid ip hlen"));
4522 KASSERT(thoff > 0, ("invalid tcp hlen"));
4523 KASSERT(hoff > 0, ("invalid ether hlen"));
4525 if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
4526 m = m_pullup(m, hoff + iphlen + thoff);
4533 if (txr->tx_flags & IGB_TXFLAG_TSO_IPLEN0) {
4536 ip = mtodoff(m, struct ip *, hoff);
4544 igb_tso_ctx(struct igb_tx_ring *txr, struct mbuf *m, uint32_t *hlen)
4546 struct e1000_adv_tx_context_desc *TXD;
4547 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
4548 int hoff, ctxd, iphlen, thoff;
4550 iphlen = m->m_pkthdr.csum_iphlen;
4551 thoff = m->m_pkthdr.csum_thlen;
4552 hoff = m->m_pkthdr.csum_lhlen;
4554 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
4556 ctxd = txr->next_avail_desc;
4557 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
4559 if (m->m_flags & M_VLANTAG) {
4562 vlantag = htole16(m->m_pkthdr.ether_vlantag);
4563 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
4566 vlan_macip_lens |= (hoff << E1000_ADVTXD_MACLEN_SHIFT);
4567 vlan_macip_lens |= iphlen;
4569 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
4570 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
4571 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
4573 mss_l4len_idx |= (m->m_pkthdr.tso_segsz << E1000_ADVTXD_MSS_SHIFT);
4574 mss_l4len_idx |= (thoff << E1000_ADVTXD_L4LEN_SHIFT);
4575 /* 82575 needs the queue index added */
4576 if (txr->sc->hw.mac.type == e1000_82575)
4577 mss_l4len_idx |= txr->me << 4;
4579 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
4580 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
4581 TXD->seqnum_seed = htole32(0);
4582 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
4584 /* We've consumed the first desc, adjust counters */
4585 if (++ctxd == txr->num_tx_desc)
4587 txr->next_avail_desc = ctxd;
4590 *hlen = hoff + iphlen + thoff;