1 /*
2 * Copyright (c) 2001-2013, Intel Corporation
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 *
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.
14 *
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.
18 *
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.
30 */
31
32 #include "opt_ifpoll.h"
33 #include "opt_igb.h"
34
35 #include <sys/param.h>
36 #include <sys/bus.h>
37 #include <sys/endian.h>
38 #include <sys/interrupt.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/mbuf.h>
42 #include <sys/proc.h>
43 #include <sys/rman.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>
50
51 #include <net/bpf.h>
52 #include <net/ethernet.h>
53 #include <net/if.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/if_ringmap.h>
59 #include <net/toeplitz.h>
60 #include <net/toeplitz2.h>
61 #include <net/vlan/if_vlan_var.h>
62 #include <net/vlan/if_vlan_ether.h>
63 #include <net/if_poll.h>
64
65 #include <netinet/in_systm.h>
66 #include <netinet/in.h>
67 #include <netinet/ip.h>
68
69 #include <bus/pci/pcivar.h>
70 #include <bus/pci/pcireg.h>
71
72 #include <dev/netif/ig_hal/e1000_api.h>
73 #include <dev/netif/ig_hal/e1000_82575.h>
74 #include <dev/netif/ig_hal/e1000_dragonfly.h>
75 #include <dev/netif/igb/if_igb.h>
76
77 #ifdef IGB_RSS_DEBUG
78 #define IGB_RSS_DPRINTF(sc, lvl, fmt, ...) \
79 do { \
80 if (sc->rss_debug >= lvl) \
81 if_printf(&sc->arpcom.ac_if, fmt, __VA_ARGS__); \
82 } while (0)
83 #else /* !IGB_RSS_DEBUG */
84 #define IGB_RSS_DPRINTF(sc, lvl, fmt, ...) ((void)0)
85 #endif /* IGB_RSS_DEBUG */
86
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 }
91
92 static struct igb_device {
93 uint16_t vid;
94 uint16_t did;
95 const char *desc;
96 } igb_devices[] = {
97 IGB_DEVICE(82575EB_COPPER),
98 IGB_DEVICE(82575EB_FIBER_SERDES),
99 IGB_DEVICE(82575GB_QUAD_COPPER),
100 IGB_DEVICE(82576),
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),
123 IGB_DEVICE(I350_VF),
124 IGB_DEVICE(I210_COPPER),
125 IGB_DEVICE(I210_COPPER_IT),
126 IGB_DEVICE(I210_COPPER_OEM1),
127 IGB_DEVICE(I210_COPPER_FLASHLESS),
128 IGB_DEVICE(I210_SERDES_FLASHLESS),
129 IGB_DEVICE(I210_FIBER),
130 IGB_DEVICE(I210_SERDES),
131 IGB_DEVICE(I210_SGMII),
132 IGB_DEVICE(I211_COPPER),
133 IGB_DEVICE(I354_BACKPLANE_1GBPS),
134 IGB_DEVICE(I354_BACKPLANE_2_5GBPS),
135 IGB_DEVICE(I354_SGMII),
136
137 /* required last entry */
138 IGB_DEVICE_NULL
139 };
140
141 static int igb_probe(device_t);
142 static int igb_attach(device_t);
143 static int igb_detach(device_t);
144 static int igb_shutdown(device_t);
145 static int igb_suspend(device_t);
146 static int igb_resume(device_t);
147
148 static boolean_t igb_is_valid_ether_addr(const uint8_t *);
149 static void igb_setup_ifp(struct igb_softc *);
150 static boolean_t igb_txcsum_ctx(struct igb_tx_ring *, struct mbuf *);
151 static int igb_tso_pullup(struct igb_tx_ring *, struct mbuf **);
152 static void igb_tso_ctx(struct igb_tx_ring *, struct mbuf *, uint32_t *);
153 static void igb_add_sysctl(struct igb_softc *);
154 static void igb_add_intr_rate_sysctl(struct igb_softc *, int,
155 const char *, const char *);
156 static int igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS);
157 static int igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS);
158 static int igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS);
159 static int igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS);
160 static void igb_set_ring_inuse(struct igb_softc *, boolean_t);
161 static int igb_get_rxring_inuse(const struct igb_softc *, boolean_t);
162 static int igb_get_txring_inuse(const struct igb_softc *, boolean_t);
163 static void igb_set_timer_cpuid(struct igb_softc *, boolean_t);
164
165 static void igb_vf_init_stats(struct igb_softc *);
166 static void igb_reset(struct igb_softc *, boolean_t);
167 static void igb_update_stats_counters(struct igb_softc *);
168 static void igb_update_vf_stats_counters(struct igb_softc *);
169 static void igb_update_link_status(struct igb_softc *);
170 static void igb_init_tx_unit(struct igb_softc *);
171 static void igb_init_rx_unit(struct igb_softc *, boolean_t);
172 static void igb_init_dmac(struct igb_softc *, uint32_t);
173 static void igb_reg_dump(struct igb_softc *);
174 static int igb_sysctl_reg_dump(SYSCTL_HANDLER_ARGS);
175
176 static void igb_set_vlan(struct igb_softc *);
177 static void igb_set_multi(struct igb_softc *);
178 static void igb_set_promisc(struct igb_softc *);
179 static void igb_disable_promisc(struct igb_softc *);
180
181 static int igb_get_ring_max(const struct igb_softc *);
182 static void igb_get_rxring_cnt(const struct igb_softc *, int *, int *);
183 static void igb_get_txring_cnt(const struct igb_softc *, int *, int *);
184 static int igb_alloc_rings(struct igb_softc *);
185 static void igb_free_rings(struct igb_softc *);
186 static int igb_create_tx_ring(struct igb_tx_ring *);
187 static int igb_create_rx_ring(struct igb_rx_ring *);
188 static void igb_free_tx_ring(struct igb_tx_ring *);
189 static void igb_free_rx_ring(struct igb_rx_ring *);
190 static void igb_destroy_tx_ring(struct igb_tx_ring *, int);
191 static void igb_destroy_rx_ring(struct igb_rx_ring *, int);
192 static void igb_init_tx_ring(struct igb_tx_ring *);
193 static int igb_init_rx_ring(struct igb_rx_ring *);
194 static int igb_newbuf(struct igb_rx_ring *, int, boolean_t);
195 static int igb_encap(struct igb_tx_ring *, struct mbuf **, int *, int *);
196 static void igb_rx_refresh(struct igb_rx_ring *, int);
197 static void igb_setup_serialize(struct igb_softc *);
198
199 static void igb_stop(struct igb_softc *);
200 static void igb_init(void *);
201 static int igb_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
202 static void igb_media_status(struct ifnet *, struct ifmediareq *);
203 static int igb_media_change(struct ifnet *);
204 static void igb_timer(void *);
205 static void igb_watchdog(struct ifaltq_subque *);
206 static void igb_start(struct ifnet *, struct ifaltq_subque *);
207 #ifdef IFPOLL_ENABLE
208 static void igb_npoll(struct ifnet *, struct ifpoll_info *);
209 static void igb_npoll_rx(struct ifnet *, void *, int);
210 static void igb_npoll_tx(struct ifnet *, void *, int);
211 static void igb_npoll_status(struct ifnet *);
212 #endif
213 static void igb_serialize(struct ifnet *, enum ifnet_serialize);
214 static void igb_deserialize(struct ifnet *, enum ifnet_serialize);
215 static int igb_tryserialize(struct ifnet *, enum ifnet_serialize);
216 #ifdef INVARIANTS
217 static void igb_serialize_assert(struct ifnet *, enum ifnet_serialize,
218 boolean_t);
219 #endif
220
221 static void igb_intr(void *);
222 static void igb_intr_shared(void *);
223 static void igb_rxeof(struct igb_rx_ring *, int);
224 static void igb_txeof(struct igb_tx_ring *, int);
225 static void igb_txgc(struct igb_tx_ring *);
226 static void igb_txgc_timer(void *);
227 static void igb_set_eitr(struct igb_softc *, int, int);
228 static void igb_enable_intr(struct igb_softc *);
229 static void igb_disable_intr(struct igb_softc *);
230 static void igb_init_unshared_intr(struct igb_softc *);
231 static void igb_init_intr(struct igb_softc *);
232 static int igb_setup_intr(struct igb_softc *);
233 static void igb_set_txintr_mask(struct igb_tx_ring *, int *, int);
234 static void igb_set_rxintr_mask(struct igb_rx_ring *, int *, int);
235 static void igb_set_intr_mask(struct igb_softc *);
236 static int igb_alloc_intr(struct igb_softc *);
237 static void igb_free_intr(struct igb_softc *);
238 static void igb_teardown_intr(struct igb_softc *, int);
239 static void igb_alloc_msix(struct igb_softc *);
240 static void igb_free_msix(struct igb_softc *, boolean_t);
241 static void igb_msix_rx(void *);
242 static void igb_msix_tx(void *);
243 static void igb_msix_status(void *);
244 static void igb_msix_rxtx(void *);
245
246 /* Management and WOL Support */
247 static void igb_get_mgmt(struct igb_softc *);
248 static void igb_rel_mgmt(struct igb_softc *);
249 static void igb_get_hw_control(struct igb_softc *);
250 static void igb_rel_hw_control(struct igb_softc *);
251 static void igb_enable_wol(struct igb_softc *);
252 static int igb_enable_phy_wol(struct igb_softc *);
253
254 static device_method_t igb_methods[] = {
255 /* Device interface */
256 DEVMETHOD(device_probe, igb_probe),
257 DEVMETHOD(device_attach, igb_attach),
258 DEVMETHOD(device_detach, igb_detach),
259 DEVMETHOD(device_shutdown, igb_shutdown),
260 DEVMETHOD(device_suspend, igb_suspend),
261 DEVMETHOD(device_resume, igb_resume),
262 DEVMETHOD_END
263 };
264
265 static driver_t igb_driver = {
266 "igb",
267 igb_methods,
268 sizeof(struct igb_softc),
269 };
270
271 static devclass_t igb_devclass;
272
273 DECLARE_DUMMY_MODULE(if_igb);
274 MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
275 DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
276
277 static int igb_rxd = IGB_DEFAULT_RXD;
278 static int igb_txd = IGB_DEFAULT_TXD;
279 static int igb_rxr = 0;
280 static int igb_txr = 0;
281 static int igb_msi_enable = 1;
282 static int igb_msix_enable = 1;
283 static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
284
285 static char igb_flowctrl[IFM_ETH_FC_STRLEN] = IFM_ETH_FC_NONE;
286
287 /*
288 * DMA Coalescing, only for i350 - default to off,
289 * this feature is for power savings
290 */
291 static int igb_dma_coalesce = 0;
292
293 TUNABLE_INT("hw.igb.rxd", &igb_rxd);
294 TUNABLE_INT("hw.igb.txd", &igb_txd);
295 TUNABLE_INT("hw.igb.rxr", &igb_rxr);
296 TUNABLE_INT("hw.igb.txr", &igb_txr);
297 TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
298 TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
299 TUNABLE_STR("hw.igb.flow_ctrl", igb_flowctrl, sizeof(igb_flowctrl));
300
301 /* i350 specific */
302 TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
303 TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
304
305 static __inline void
igb_tx_intr(struct igb_tx_ring * txr,int hdr)306 igb_tx_intr(struct igb_tx_ring *txr, int hdr)
307 {
308
309 igb_txeof(txr, hdr);
310 if (!ifsq_is_empty(txr->ifsq))
311 ifsq_devstart(txr->ifsq);
312 }
313
314 static __inline void
igb_try_txgc(struct igb_tx_ring * txr,int16_t dec)315 igb_try_txgc(struct igb_tx_ring *txr, int16_t dec)
316 {
317
318 if (txr->tx_running > 0) {
319 txr->tx_running -= dec;
320 if (txr->tx_running <= 0 && txr->tx_nmbuf &&
321 txr->tx_avail < txr->num_tx_desc &&
322 txr->tx_avail + txr->intr_nsegs > txr->num_tx_desc)
323 igb_txgc(txr);
324 }
325 }
326
327 static void
igb_txgc_timer(void * xtxr)328 igb_txgc_timer(void *xtxr)
329 {
330 struct igb_tx_ring *txr = xtxr;
331 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
332
333 if ((ifp->if_flags & (IFF_RUNNING | IFF_UP | IFF_NPOLLING)) !=
334 (IFF_RUNNING | IFF_UP))
335 return;
336
337 if (!lwkt_serialize_try(&txr->tx_serialize))
338 goto done;
339
340 if ((ifp->if_flags & (IFF_RUNNING | IFF_UP | IFF_NPOLLING)) !=
341 (IFF_RUNNING | IFF_UP)) {
342 lwkt_serialize_exit(&txr->tx_serialize);
343 return;
344 }
345 igb_try_txgc(txr, IGB_TX_RUNNING_DEC);
346
347 lwkt_serialize_exit(&txr->tx_serialize);
348 done:
349 callout_reset(&txr->tx_gc_timer, 1, igb_txgc_timer, txr);
350 }
351
352 static __inline void
igb_free_txbuf(struct igb_tx_ring * txr,struct igb_tx_buf * txbuf)353 igb_free_txbuf(struct igb_tx_ring *txr, struct igb_tx_buf *txbuf)
354 {
355
356 KKASSERT(txbuf->m_head != NULL);
357 KKASSERT(txr->tx_nmbuf > 0);
358 txr->tx_nmbuf--;
359
360 bus_dmamap_unload(txr->tx_tag, txbuf->map);
361 m_freem(txbuf->m_head);
362 txbuf->m_head = NULL;
363 }
364
365 static __inline void
igb_rxcsum(uint32_t staterr,struct mbuf * mp)366 igb_rxcsum(uint32_t staterr, struct mbuf *mp)
367 {
368 /* Ignore Checksum bit is set */
369 if (staterr & E1000_RXD_STAT_IXSM)
370 return;
371
372 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
373 E1000_RXD_STAT_IPCS)
374 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
375
376 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
377 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
378 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
379 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
380 mp->m_pkthdr.csum_data = htons(0xffff);
381 }
382 }
383 }
384
385 static __inline struct pktinfo *
igb_rssinfo(struct mbuf * m,struct pktinfo * pi,uint32_t hash,uint32_t hashtype,uint32_t staterr)386 igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
387 uint32_t hash, uint32_t hashtype, uint32_t staterr)
388 {
389 switch (hashtype) {
390 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
391 pi->pi_netisr = NETISR_IP;
392 pi->pi_flags = 0;
393 pi->pi_l3proto = IPPROTO_TCP;
394 break;
395
396 case E1000_RXDADV_RSSTYPE_IPV4:
397 if (staterr & E1000_RXD_STAT_IXSM)
398 return NULL;
399
400 if ((staterr &
401 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
402 E1000_RXD_STAT_TCPCS) {
403 pi->pi_netisr = NETISR_IP;
404 pi->pi_flags = 0;
405 pi->pi_l3proto = IPPROTO_UDP;
406 break;
407 }
408 /* FALL THROUGH */
409 default:
410 return NULL;
411 }
412
413 m_sethash(m, toeplitz_hash(hash));
414 return pi;
415 }
416
417 static int
igb_get_ring_max(const struct igb_softc * sc)418 igb_get_ring_max(const struct igb_softc *sc)
419 {
420
421 switch (sc->hw.mac.type) {
422 case e1000_82575:
423 return (IGB_MAX_RING_82575);
424
425 case e1000_82576:
426 return (IGB_MAX_RING_82576);
427
428 case e1000_82580:
429 return (IGB_MAX_RING_82580);
430
431 case e1000_i350:
432 return (IGB_MAX_RING_I350);
433
434 case e1000_i354:
435 return (IGB_MAX_RING_I354);
436
437 case e1000_i210:
438 return (IGB_MAX_RING_I210);
439
440 case e1000_i211:
441 return (IGB_MAX_RING_I211);
442
443 default:
444 return (IGB_MIN_RING);
445 }
446 }
447
448 static void
igb_get_rxring_cnt(const struct igb_softc * sc,int * ring_cnt,int * ring_max)449 igb_get_rxring_cnt(const struct igb_softc *sc, int *ring_cnt, int *ring_max)
450 {
451
452 *ring_max = igb_get_ring_max(sc);
453 *ring_cnt = device_getenv_int(sc->dev, "rxr", igb_rxr);
454 }
455
456 static void
igb_get_txring_cnt(const struct igb_softc * sc,int * ring_cnt,int * ring_max)457 igb_get_txring_cnt(const struct igb_softc *sc, int *ring_cnt, int *ring_max)
458 {
459
460 *ring_max = igb_get_ring_max(sc);
461 *ring_cnt = device_getenv_int(sc->dev, "txr", igb_txr);
462 }
463
464 static int
igb_probe(device_t dev)465 igb_probe(device_t dev)
466 {
467 const struct igb_device *d;
468 uint16_t vid, did;
469
470 vid = pci_get_vendor(dev);
471 did = pci_get_device(dev);
472
473 for (d = igb_devices; d->desc != NULL; ++d) {
474 if (vid == d->vid && did == d->did) {
475 device_set_desc(dev, d->desc);
476 return 0;
477 }
478 }
479 return ENXIO;
480 }
481
482 static int
igb_attach(device_t dev)483 igb_attach(device_t dev)
484 {
485 struct igb_softc *sc = device_get_softc(dev);
486 uint16_t eeprom_data;
487 int error = 0, ring_max, ring_cnt;
488 char flowctrl[IFM_ETH_FC_STRLEN];
489
490 #ifdef notyet
491 /* SYSCTL stuff */
492 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
493 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
494 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
495 igb_sysctl_nvm_info, "I", "NVM Information");
496 #endif
497
498 ifmedia_init(&sc->media, IFM_IMASK | IFM_ETH_FCMASK,
499 igb_media_change, igb_media_status);
500 callout_init_mp(&sc->timer);
501 lwkt_serialize_init(&sc->main_serialize);
502
503 if_initname(&sc->arpcom.ac_if, device_get_name(dev),
504 device_get_unit(dev));
505 sc->dev = sc->osdep.dev = dev;
506
507 /* Enable bus mastering */
508 pci_enable_busmaster(dev);
509
510 /*
511 * Determine hardware and mac type
512 */
513 sc->hw.vendor_id = pci_get_vendor(dev);
514 sc->hw.device_id = pci_get_device(dev);
515 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
516 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
517 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
518
519 if (e1000_set_mac_type(&sc->hw))
520 return ENXIO;
521
522 /* Are we a VF device? */
523 if (sc->hw.mac.type == e1000_vfadapt ||
524 sc->hw.mac.type == e1000_vfadapt_i350)
525 sc->vf_ifp = 1;
526 else
527 sc->vf_ifp = 0;
528
529 /*
530 * Configure total supported RX/TX ring count
531 */
532 igb_get_rxring_cnt(sc, &ring_cnt, &ring_max);
533 sc->rx_rmap = if_ringmap_alloc(dev, ring_cnt, ring_max);
534 igb_get_txring_cnt(sc, &ring_cnt, &ring_max);
535 sc->tx_rmap = if_ringmap_alloc(dev, ring_cnt, ring_max);
536 if_ringmap_match(dev, sc->rx_rmap, sc->tx_rmap);
537
538 sc->rx_ring_cnt = if_ringmap_count(sc->rx_rmap);
539 sc->rx_ring_inuse = sc->rx_ring_cnt;
540 sc->tx_ring_cnt = if_ringmap_count(sc->tx_rmap);
541 sc->tx_ring_inuse = sc->tx_ring_cnt;
542
543 /* Setup flow control. */
544 device_getenv_string(dev, "flow_ctrl", flowctrl, sizeof(flowctrl),
545 igb_flowctrl);
546 sc->ifm_flowctrl = ifmedia_str2ethfc(flowctrl);
547
548 /*
549 * Allocate IO memory
550 */
551 sc->mem_rid = PCIR_BAR(0);
552 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
553 RF_ACTIVE);
554 if (sc->mem_res == NULL) {
555 device_printf(dev, "Unable to allocate bus resource: memory\n");
556 error = ENXIO;
557 goto failed;
558 }
559 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
560 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
561
562 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
563
564 /* Save PCI command register for Shared Code */
565 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
566 sc->hw.back = &sc->osdep;
567
568 /* Do Shared Code initialization */
569 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
570 device_printf(dev, "Setup of Shared code failed\n");
571 error = ENXIO;
572 goto failed;
573 }
574
575 e1000_get_bus_info(&sc->hw);
576
577 sc->hw.mac.autoneg = DO_AUTO_NEG;
578 sc->hw.phy.autoneg_wait_to_complete = FALSE;
579 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
580
581 /* Copper options */
582 if (sc->hw.phy.media_type == e1000_media_type_copper) {
583 sc->hw.phy.mdix = AUTO_ALL_MODES;
584 sc->hw.phy.disable_polarity_correction = FALSE;
585 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
586 }
587
588 /* Set the frame limits assuming standard ethernet sized frames. */
589 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
590
591 /* Allocate RX/TX rings */
592 error = igb_alloc_rings(sc);
593 if (error)
594 goto failed;
595
596 /* Allocate interrupt */
597 error = igb_alloc_intr(sc);
598 if (error)
599 goto failed;
600
601 /* Setup serializes */
602 igb_setup_serialize(sc);
603
604 /* Allocate the appropriate stats memory */
605 if (sc->vf_ifp) {
606 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
607 M_WAITOK | M_ZERO);
608 igb_vf_init_stats(sc);
609 } else {
610 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
611 M_WAITOK | M_ZERO);
612 }
613
614 /* Allocate multicast array memory. */
615 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
616 M_DEVBUF, M_WAITOK);
617
618 /* Some adapter-specific advanced features */
619 if (sc->hw.mac.type >= e1000_i350) {
620 #ifdef notyet
621 igb_set_sysctl_value(adapter, "dma_coalesce",
622 "configure dma coalesce",
623 &adapter->dma_coalesce, igb_dma_coalesce);
624 igb_set_sysctl_value(adapter, "eee_disabled",
625 "enable Energy Efficient Ethernet",
626 &adapter->hw.dev_spec._82575.eee_disable,
627 igb_eee_disabled);
628 #else
629 sc->dma_coalesce = igb_dma_coalesce;
630 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
631 #endif
632 if (sc->hw.phy.media_type == e1000_media_type_copper) {
633 if (sc->hw.mac.type == e1000_i354)
634 e1000_set_eee_i354(&sc->hw, TRUE, TRUE);
635 else
636 e1000_set_eee_i350(&sc->hw, TRUE, TRUE);
637 }
638 }
639
640 /*
641 * Start from a known state, this is important in reading the nvm and
642 * mac from that.
643 */
644 e1000_reset_hw(&sc->hw);
645
646 /* Make sure we have a good EEPROM before we read from it */
647 if (sc->hw.mac.type != e1000_i210 && sc->hw.mac.type != e1000_i211 &&
648 e1000_validate_nvm_checksum(&sc->hw) < 0) {
649 /*
650 * Some PCI-E parts fail the first check due to
651 * the link being in sleep state, call it again,
652 * if it fails a second time its a real issue.
653 */
654 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
655 device_printf(dev,
656 "The EEPROM Checksum Is Not Valid\n");
657 error = EIO;
658 goto failed;
659 }
660 }
661
662 /* Copy the permanent MAC address out of the EEPROM */
663 if (e1000_read_mac_addr(&sc->hw) < 0) {
664 device_printf(dev, "EEPROM read error while reading MAC"
665 " address\n");
666 error = EIO;
667 goto failed;
668 }
669 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
670 device_printf(dev, "Invalid MAC address\n");
671 error = EIO;
672 goto failed;
673 }
674
675 /* Setup OS specific network interface */
676 igb_setup_ifp(sc);
677
678 /* Add sysctl tree, must after igb_setup_ifp() */
679 igb_add_sysctl(sc);
680
681 /* Now get a good starting state */
682 igb_reset(sc, FALSE);
683
684 /* Initialize statistics */
685 igb_update_stats_counters(sc);
686
687 sc->hw.mac.get_link_status = 1;
688 igb_update_link_status(sc);
689
690 /* Indicate SOL/IDER usage */
691 if (e1000_check_reset_block(&sc->hw)) {
692 device_printf(dev,
693 "PHY reset is blocked due to SOL/IDER session.\n");
694 }
695
696 /* Determine if we have to control management hardware */
697 if (e1000_enable_mng_pass_thru(&sc->hw))
698 sc->flags |= IGB_FLAG_HAS_MGMT;
699
700 /*
701 * Setup Wake-on-Lan
702 */
703 /* APME bit in EEPROM is mapped to WUC.APME */
704 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
705 if (eeprom_data) {
706 /* XXX E1000_WUFC_MC always be cleared from E1000_WUC. */
707 sc->wol = E1000_WUFC_MAG | E1000_WUFC_MC;
708 device_printf(dev, "has WOL\n");
709 }
710
711 #ifdef notyet
712 /* Register for VLAN events */
713 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
714 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
715 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
716 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
717 #endif
718
719 #ifdef notyet
720 igb_add_hw_stats(adapter);
721 #endif
722
723 /*
724 * Disable interrupt to prevent spurious interrupts (line based
725 * interrupt, MSI or even MSI-X), which had been observed on
726 * several types of LOMs, from being handled.
727 */
728 igb_disable_intr(sc);
729
730 error = igb_setup_intr(sc);
731 if (error) {
732 ether_ifdetach(&sc->arpcom.ac_if);
733 goto failed;
734 }
735 return 0;
736
737 failed:
738 igb_detach(dev);
739 return error;
740 }
741
742 static int
igb_detach(device_t dev)743 igb_detach(device_t dev)
744 {
745 struct igb_softc *sc = device_get_softc(dev);
746
747 if (device_is_attached(dev)) {
748 struct ifnet *ifp = &sc->arpcom.ac_if;
749
750 ifnet_serialize_all(ifp);
751
752 igb_stop(sc);
753
754 e1000_phy_hw_reset(&sc->hw);
755
756 /* Give control back to firmware */
757 igb_rel_mgmt(sc);
758 igb_rel_hw_control(sc);
759 igb_enable_wol(sc);
760
761 igb_teardown_intr(sc, sc->intr_cnt);
762
763 ifnet_deserialize_all(ifp);
764
765 ether_ifdetach(ifp);
766 } else if (sc->mem_res != NULL) {
767 igb_rel_hw_control(sc);
768 }
769
770 ifmedia_removeall(&sc->media);
771 bus_generic_detach(dev);
772
773 igb_free_intr(sc);
774
775 if (sc->msix_mem_res != NULL) {
776 bus_release_resource(dev, SYS_RES_MEMORY, sc->msix_mem_rid,
777 sc->msix_mem_res);
778 }
779 if (sc->mem_res != NULL) {
780 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
781 sc->mem_res);
782 }
783
784 igb_free_rings(sc);
785
786 if (sc->mta != NULL)
787 kfree(sc->mta, M_DEVBUF);
788 if (sc->stats != NULL)
789 kfree(sc->stats, M_DEVBUF);
790 if (sc->serializes != NULL)
791 kfree(sc->serializes, M_DEVBUF);
792 if (sc->rx_rmap != NULL)
793 if_ringmap_free(sc->rx_rmap);
794 if (sc->rx_rmap_intr != NULL)
795 if_ringmap_free(sc->rx_rmap_intr);
796 if (sc->tx_rmap != NULL)
797 if_ringmap_free(sc->tx_rmap);
798 if (sc->tx_rmap_intr != NULL)
799 if_ringmap_free(sc->tx_rmap_intr);
800
801 return 0;
802 }
803
804 static int
igb_shutdown(device_t dev)805 igb_shutdown(device_t dev)
806 {
807 return igb_suspend(dev);
808 }
809
810 static int
igb_suspend(device_t dev)811 igb_suspend(device_t dev)
812 {
813 struct igb_softc *sc = device_get_softc(dev);
814 struct ifnet *ifp = &sc->arpcom.ac_if;
815
816 ifnet_serialize_all(ifp);
817
818 igb_stop(sc);
819
820 igb_rel_mgmt(sc);
821 igb_rel_hw_control(sc);
822 igb_enable_wol(sc);
823
824 ifnet_deserialize_all(ifp);
825
826 return bus_generic_suspend(dev);
827 }
828
829 static int
igb_resume(device_t dev)830 igb_resume(device_t dev)
831 {
832 struct igb_softc *sc = device_get_softc(dev);
833 struct ifnet *ifp = &sc->arpcom.ac_if;
834 int i;
835
836 ifnet_serialize_all(ifp);
837
838 igb_init(sc);
839 igb_get_mgmt(sc);
840
841 for (i = 0; i < sc->tx_ring_inuse; ++i)
842 ifsq_devstart_sched(sc->tx_rings[i].ifsq);
843
844 ifnet_deserialize_all(ifp);
845
846 return bus_generic_resume(dev);
847 }
848
849 static int
igb_ioctl(struct ifnet * ifp,u_long command,caddr_t data,struct ucred * cr)850 igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
851 {
852 struct igb_softc *sc = ifp->if_softc;
853 struct ifreq *ifr = (struct ifreq *)data;
854 int max_frame_size, mask, reinit;
855 int error = 0;
856
857 ASSERT_IFNET_SERIALIZED_ALL(ifp);
858
859 switch (command) {
860 case SIOCSIFMTU:
861 max_frame_size = 9234;
862 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
863 ETHER_CRC_LEN) {
864 error = EINVAL;
865 break;
866 }
867
868 ifp->if_mtu = ifr->ifr_mtu;
869 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
870 ETHER_CRC_LEN;
871
872 if (ifp->if_flags & IFF_RUNNING)
873 igb_init(sc);
874 break;
875
876 case SIOCSIFFLAGS:
877 if (ifp->if_flags & IFF_UP) {
878 if (ifp->if_flags & IFF_RUNNING) {
879 if ((ifp->if_flags ^ sc->if_flags) &
880 (IFF_PROMISC | IFF_ALLMULTI)) {
881 igb_disable_promisc(sc);
882 igb_set_promisc(sc);
883 }
884 } else {
885 igb_init(sc);
886 }
887 } else if (ifp->if_flags & IFF_RUNNING) {
888 igb_stop(sc);
889 }
890 sc->if_flags = ifp->if_flags;
891 break;
892
893 case SIOCADDMULTI:
894 case SIOCDELMULTI:
895 if (ifp->if_flags & IFF_RUNNING) {
896 igb_disable_intr(sc);
897 igb_set_multi(sc);
898 #ifdef IFPOLL_ENABLE
899 if (!(ifp->if_flags & IFF_NPOLLING))
900 #endif
901 igb_enable_intr(sc);
902 }
903 break;
904
905 case SIOCSIFMEDIA:
906 /* Check SOL/IDER usage */
907 if (e1000_check_reset_block(&sc->hw)) {
908 if_printf(ifp, "Media change is "
909 "blocked due to SOL/IDER session.\n");
910 break;
911 }
912 /* FALL THROUGH */
913
914 case SIOCGIFMEDIA:
915 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
916 break;
917
918 case SIOCSIFCAP:
919 reinit = 0;
920 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
921 if (mask & IFCAP_RXCSUM) {
922 ifp->if_capenable ^= IFCAP_RXCSUM;
923 reinit = 1;
924 }
925 if (mask & IFCAP_VLAN_HWTAGGING) {
926 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
927 reinit = 1;
928 }
929 if (mask & IFCAP_TXCSUM) {
930 ifp->if_capenable ^= IFCAP_TXCSUM;
931 if (ifp->if_capenable & IFCAP_TXCSUM)
932 ifp->if_hwassist |= IGB_CSUM_FEATURES;
933 else
934 ifp->if_hwassist &= ~IGB_CSUM_FEATURES;
935 }
936 if (mask & IFCAP_TSO) {
937 ifp->if_capenable ^= IFCAP_TSO;
938 if (ifp->if_capenable & IFCAP_TSO)
939 ifp->if_hwassist |= CSUM_TSO;
940 else
941 ifp->if_hwassist &= ~CSUM_TSO;
942 }
943 if (mask & IFCAP_RSS)
944 ifp->if_capenable ^= IFCAP_RSS;
945 if (reinit && (ifp->if_flags & IFF_RUNNING))
946 igb_init(sc);
947 break;
948
949 default:
950 error = ether_ioctl(ifp, command, data);
951 break;
952 }
953 return error;
954 }
955
956 static void
igb_init(void * xsc)957 igb_init(void *xsc)
958 {
959 struct igb_softc *sc = xsc;
960 struct ifnet *ifp = &sc->arpcom.ac_if;
961 boolean_t polling;
962 int i;
963
964 ASSERT_IFNET_SERIALIZED_ALL(ifp);
965
966 igb_stop(sc);
967
968 /* Get the latest mac address, User can use a LAA */
969 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
970
971 /* Put the address into the Receive Address Array */
972 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
973
974 igb_reset(sc, FALSE);
975 igb_update_link_status(sc);
976
977 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
978
979 /* Clear bad data from Rx FIFOs */
980 e1000_rx_fifo_flush_82575(&sc->hw);
981
982 /* Configure for OS presence */
983 igb_get_mgmt(sc);
984
985 polling = FALSE;
986 #ifdef IFPOLL_ENABLE
987 if (ifp->if_flags & IFF_NPOLLING)
988 polling = TRUE;
989 #endif
990
991 /* Configured used RX/TX rings */
992 igb_set_ring_inuse(sc, polling);
993 ifq_set_subq_divisor(&ifp->if_snd, sc->tx_ring_inuse);
994
995 /* Initialize interrupt */
996 igb_init_intr(sc);
997
998 /* Prepare transmit descriptors and buffers */
999 for (i = 0; i < sc->tx_ring_inuse; ++i)
1000 igb_init_tx_ring(&sc->tx_rings[i]);
1001 igb_init_tx_unit(sc);
1002
1003 /* Setup Multicast table */
1004 igb_set_multi(sc);
1005
1006 #if 0
1007 /*
1008 * Figure out the desired mbuf pool
1009 * for doing jumbo/packetsplit
1010 */
1011 if (adapter->max_frame_size <= 2048)
1012 adapter->rx_mbuf_sz = MCLBYTES;
1013 else if (adapter->max_frame_size <= 4096)
1014 adapter->rx_mbuf_sz = MJUMPAGESIZE;
1015 else
1016 adapter->rx_mbuf_sz = MJUM9BYTES;
1017 #endif
1018
1019 /* Prepare receive descriptors and buffers */
1020 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1021 int error;
1022
1023 error = igb_init_rx_ring(&sc->rx_rings[i]);
1024 if (error) {
1025 if_printf(ifp, "Could not setup receive structures\n");
1026 igb_stop(sc);
1027 return;
1028 }
1029 }
1030 igb_init_rx_unit(sc, polling);
1031
1032 /* Enable VLAN support */
1033 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
1034 igb_set_vlan(sc);
1035
1036 /* Don't lose promiscuous settings */
1037 igb_set_promisc(sc);
1038
1039 /* Clear counters */
1040 e1000_clear_hw_cntrs_base_generic(&sc->hw);
1041
1042 /* This clears any pending interrupts */
1043 E1000_READ_REG(&sc->hw, E1000_ICR);
1044
1045 /*
1046 * Only enable interrupts if we are not polling, make sure
1047 * they are off otherwise.
1048 */
1049 if (polling) {
1050 igb_disable_intr(sc);
1051 } else {
1052 igb_enable_intr(sc);
1053 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
1054 }
1055
1056 /* Set Energy Efficient Ethernet */
1057 if (sc->hw.phy.media_type == e1000_media_type_copper) {
1058 if (sc->hw.mac.type == e1000_i354)
1059 e1000_set_eee_i354(&sc->hw, TRUE, TRUE);
1060 else
1061 e1000_set_eee_i350(&sc->hw, TRUE, TRUE);
1062 }
1063
1064 ifp->if_flags |= IFF_RUNNING;
1065 for (i = 0; i < sc->tx_ring_inuse; ++i) {
1066 struct igb_tx_ring *txr = &sc->tx_rings[i];
1067
1068 ifsq_clr_oactive(txr->ifsq);
1069 ifsq_watchdog_start(&txr->tx_watchdog);
1070
1071 if (!polling) {
1072 callout_reset_bycpu(&txr->tx_gc_timer, 1,
1073 igb_txgc_timer, txr, txr->tx_intr_cpuid);
1074 }
1075 }
1076
1077 igb_set_timer_cpuid(sc, polling);
1078 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
1079 }
1080
1081 static void
igb_media_status(struct ifnet * ifp,struct ifmediareq * ifmr)1082 igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1083 {
1084 struct igb_softc *sc = ifp->if_softc;
1085
1086 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1087
1088 if ((ifp->if_flags & IFF_RUNNING) == 0)
1089 sc->hw.mac.get_link_status = 1;
1090 igb_update_link_status(sc);
1091
1092 ifmr->ifm_status = IFM_AVALID;
1093 ifmr->ifm_active = IFM_ETHER;
1094
1095 if (!sc->link_active) {
1096 if (sc->hw.mac.autoneg)
1097 ifmr->ifm_active |= IFM_NONE;
1098 else
1099 ifmr->ifm_active |= sc->media.ifm_media;
1100 return;
1101 }
1102
1103 ifmr->ifm_status |= IFM_ACTIVE;
1104 if (sc->ifm_flowctrl & IFM_ETH_FORCEPAUSE)
1105 ifmr->ifm_active |= sc->ifm_flowctrl;
1106
1107 switch (sc->link_speed) {
1108 case 10:
1109 ifmr->ifm_active |= IFM_10_T;
1110 break;
1111
1112 case 100:
1113 /*
1114 * Support for 100Mb SFP - these are Fiber
1115 * but the media type appears as serdes
1116 */
1117 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1118 sc->hw.phy.media_type == e1000_media_type_internal_serdes)
1119 ifmr->ifm_active |= IFM_100_FX;
1120 else
1121 ifmr->ifm_active |= IFM_100_TX;
1122 break;
1123
1124 case 1000:
1125 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1126 sc->hw.phy.media_type == e1000_media_type_internal_serdes)
1127 ifmr->ifm_active |= IFM_1000_SX;
1128 else
1129 ifmr->ifm_active |= IFM_1000_T;
1130 break;
1131
1132 case 2500:
1133 ifmr->ifm_active |= IFM_2500_SX;
1134 break;
1135 }
1136
1137 if (sc->link_duplex == FULL_DUPLEX)
1138 ifmr->ifm_active |= IFM_FDX;
1139 else
1140 ifmr->ifm_active |= IFM_HDX;
1141
1142 if (sc->link_duplex == FULL_DUPLEX)
1143 ifmr->ifm_active |= e1000_fc2ifmedia(sc->hw.fc.current_mode);
1144 }
1145
1146 static int
igb_media_change(struct ifnet * ifp)1147 igb_media_change(struct ifnet *ifp)
1148 {
1149 struct igb_softc *sc = ifp->if_softc;
1150 struct ifmedia *ifm = &sc->media;
1151
1152 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1153
1154 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1155 return EINVAL;
1156
1157 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1158 case IFM_AUTO:
1159 sc->hw.mac.autoneg = DO_AUTO_NEG;
1160 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1161 break;
1162
1163 case IFM_1000_SX:
1164 case IFM_1000_T:
1165 sc->hw.mac.autoneg = DO_AUTO_NEG;
1166 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1167 break;
1168
1169 case IFM_100_TX:
1170 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
1171 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1172 } else {
1173 if (IFM_OPTIONS(ifm->ifm_media) &
1174 (IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE)) {
1175 if (bootverbose) {
1176 if_printf(ifp, "Flow control is not "
1177 "allowed for half-duplex\n");
1178 }
1179 return EINVAL;
1180 }
1181 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1182 }
1183 sc->hw.mac.autoneg = FALSE;
1184 sc->hw.phy.autoneg_advertised = 0;
1185 break;
1186
1187 case IFM_10_T:
1188 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
1189 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1190 } else {
1191 if (IFM_OPTIONS(ifm->ifm_media) &
1192 (IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE)) {
1193 if (bootverbose) {
1194 if_printf(ifp, "Flow control is not "
1195 "allowed for half-duplex\n");
1196 }
1197 return EINVAL;
1198 }
1199 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1200 }
1201 sc->hw.mac.autoneg = FALSE;
1202 sc->hw.phy.autoneg_advertised = 0;
1203 break;
1204
1205 default:
1206 if (bootverbose) {
1207 if_printf(ifp, "Unsupported media type %d\n",
1208 IFM_SUBTYPE(ifm->ifm_media));
1209 }
1210 return EINVAL;
1211 }
1212 sc->ifm_flowctrl = ifm->ifm_media & IFM_ETH_FCMASK;
1213
1214 if (ifp->if_flags & IFF_RUNNING)
1215 igb_init(sc);
1216
1217 return 0;
1218 }
1219
1220 static void
igb_set_promisc(struct igb_softc * sc)1221 igb_set_promisc(struct igb_softc *sc)
1222 {
1223 struct ifnet *ifp = &sc->arpcom.ac_if;
1224 struct e1000_hw *hw = &sc->hw;
1225 uint32_t reg;
1226
1227 if (sc->vf_ifp) {
1228 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1229 return;
1230 }
1231
1232 reg = E1000_READ_REG(hw, E1000_RCTL);
1233 if (ifp->if_flags & IFF_PROMISC) {
1234 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1235 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1236 } else if (ifp->if_flags & IFF_ALLMULTI) {
1237 reg |= E1000_RCTL_MPE;
1238 reg &= ~E1000_RCTL_UPE;
1239 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1240 }
1241 }
1242
1243 static void
igb_disable_promisc(struct igb_softc * sc)1244 igb_disable_promisc(struct igb_softc *sc)
1245 {
1246 struct e1000_hw *hw = &sc->hw;
1247 struct ifnet *ifp = &sc->arpcom.ac_if;
1248 uint32_t reg;
1249 int mcnt = 0;
1250
1251 if (sc->vf_ifp) {
1252 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1253 return;
1254 }
1255 reg = E1000_READ_REG(hw, E1000_RCTL);
1256 reg &= ~E1000_RCTL_UPE;
1257 if (ifp->if_flags & IFF_ALLMULTI) {
1258 mcnt = MAX_NUM_MULTICAST_ADDRESSES;
1259 } else {
1260 struct ifmultiaddr *ifma;
1261 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1262 if (ifma->ifma_addr->sa_family != AF_LINK)
1263 continue;
1264 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1265 break;
1266 mcnt++;
1267 }
1268 }
1269 /* Don't disable if in MAX groups */
1270 if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
1271 reg &= ~E1000_RCTL_MPE;
1272 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1273 }
1274
1275 static void
igb_set_multi(struct igb_softc * sc)1276 igb_set_multi(struct igb_softc *sc)
1277 {
1278 struct ifnet *ifp = &sc->arpcom.ac_if;
1279 struct ifmultiaddr *ifma;
1280 uint32_t reg_rctl = 0;
1281 uint8_t *mta;
1282 int mcnt = 0;
1283
1284 mta = sc->mta;
1285 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1286
1287 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1288 if (ifma->ifma_addr->sa_family != AF_LINK)
1289 continue;
1290
1291 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1292 break;
1293
1294 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1295 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1296 mcnt++;
1297 }
1298
1299 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1300 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1301 reg_rctl |= E1000_RCTL_MPE;
1302 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1303 } else {
1304 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1305 }
1306 }
1307
1308 static void
igb_timer(void * xsc)1309 igb_timer(void *xsc)
1310 {
1311 struct igb_softc *sc = xsc;
1312
1313 lwkt_serialize_enter(&sc->main_serialize);
1314
1315 igb_update_link_status(sc);
1316 igb_update_stats_counters(sc);
1317
1318 callout_reset_bycpu(&sc->timer, hz, igb_timer, sc, sc->timer_cpuid);
1319
1320 lwkt_serialize_exit(&sc->main_serialize);
1321 }
1322
1323 static void
igb_update_link_status(struct igb_softc * sc)1324 igb_update_link_status(struct igb_softc *sc)
1325 {
1326 struct ifnet *ifp = &sc->arpcom.ac_if;
1327 struct e1000_hw *hw = &sc->hw;
1328 uint32_t link_check, thstat, ctrl;
1329
1330 link_check = thstat = ctrl = 0;
1331
1332 /* Get the cached link value or read for real */
1333 switch (hw->phy.media_type) {
1334 case e1000_media_type_copper:
1335 if (hw->mac.get_link_status) {
1336 /* Do the work to read phy */
1337 e1000_check_for_link(hw);
1338 link_check = !hw->mac.get_link_status;
1339 } else {
1340 link_check = TRUE;
1341 }
1342 break;
1343
1344 case e1000_media_type_fiber:
1345 e1000_check_for_link(hw);
1346 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1347 break;
1348
1349 case e1000_media_type_internal_serdes:
1350 e1000_check_for_link(hw);
1351 link_check = hw->mac.serdes_has_link;
1352 break;
1353
1354 /* VF device is type_unknown */
1355 case e1000_media_type_unknown:
1356 e1000_check_for_link(hw);
1357 link_check = !hw->mac.get_link_status;
1358 /* Fall thru */
1359 default:
1360 break;
1361 }
1362
1363 /* Check for thermal downshift or shutdown */
1364 if (hw->mac.type == e1000_i350) {
1365 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1366 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1367 }
1368
1369 /* Now we check if a transition has happened */
1370 if (link_check && sc->link_active == 0) {
1371 e1000_get_speed_and_duplex(hw,
1372 &sc->link_speed, &sc->link_duplex);
1373 if (bootverbose) {
1374 char flowctrl[IFM_ETH_FC_STRLEN];
1375
1376 /* Get the flow control for display */
1377 e1000_fc2str(hw->fc.current_mode, flowctrl,
1378 sizeof(flowctrl));
1379
1380 if_printf(ifp, "Link is up %d Mbps %s, "
1381 "Flow control: %s\n",
1382 sc->link_speed,
1383 sc->link_duplex == FULL_DUPLEX ?
1384 "Full Duplex" : "Half Duplex",
1385 flowctrl);
1386 }
1387 if (sc->ifm_flowctrl & IFM_ETH_FORCEPAUSE)
1388 e1000_force_flowctrl(hw, sc->ifm_flowctrl);
1389 sc->link_active = 1;
1390
1391 ifp->if_baudrate = sc->link_speed * 1000000;
1392 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1393 (thstat & E1000_THSTAT_LINK_THROTTLE))
1394 if_printf(ifp, "Link: thermal downshift\n");
1395 /* Delay Link Up for Phy update */
1396 if ((hw->mac.type == e1000_i210 ||
1397 hw->mac.type == e1000_i211) &&
1398 hw->phy.id == I210_I_PHY_ID)
1399 msec_delay(IGB_I210_LINK_DELAY);
1400 /*
1401 * Reset if the media type changed.
1402 * Support AutoMediaDetect for Marvell M88 PHY in i354.
1403 */
1404 if (hw->dev_spec._82575.media_changed) {
1405 hw->dev_spec._82575.media_changed = FALSE;
1406 igb_reset(sc, TRUE);
1407 }
1408 /* This can sleep */
1409 ifp->if_link_state = LINK_STATE_UP;
1410 if_link_state_change(ifp);
1411 } else if (!link_check && sc->link_active == 1) {
1412 ifp->if_baudrate = sc->link_speed = 0;
1413 sc->link_duplex = 0;
1414 if (bootverbose)
1415 if_printf(ifp, "Link is Down\n");
1416 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1417 (thstat & E1000_THSTAT_PWR_DOWN))
1418 if_printf(ifp, "Link: thermal shutdown\n");
1419 sc->link_active = 0;
1420 /* This can sleep */
1421 ifp->if_link_state = LINK_STATE_DOWN;
1422 if_link_state_change(ifp);
1423 }
1424 }
1425
1426 static void
igb_stop(struct igb_softc * sc)1427 igb_stop(struct igb_softc *sc)
1428 {
1429 struct ifnet *ifp = &sc->arpcom.ac_if;
1430 int i;
1431
1432 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1433
1434 igb_disable_intr(sc);
1435
1436 callout_stop(&sc->timer);
1437
1438 ifp->if_flags &= ~IFF_RUNNING;
1439 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1440 struct igb_tx_ring *txr = &sc->tx_rings[i];
1441
1442 ifsq_clr_oactive(txr->ifsq);
1443 ifsq_watchdog_stop(&txr->tx_watchdog);
1444 txr->tx_flags &= ~IGB_TXFLAG_ENABLED;
1445
1446 txr->tx_running = 0;
1447 callout_stop(&txr->tx_gc_timer);
1448 }
1449
1450 e1000_reset_hw(&sc->hw);
1451 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1452
1453 e1000_led_off(&sc->hw);
1454 e1000_cleanup_led(&sc->hw);
1455
1456 for (i = 0; i < sc->tx_ring_cnt; ++i)
1457 igb_free_tx_ring(&sc->tx_rings[i]);
1458 for (i = 0; i < sc->rx_ring_cnt; ++i)
1459 igb_free_rx_ring(&sc->rx_rings[i]);
1460 }
1461
1462 static void
igb_reset(struct igb_softc * sc,boolean_t media_reset)1463 igb_reset(struct igb_softc *sc, boolean_t media_reset)
1464 {
1465 struct ifnet *ifp = &sc->arpcom.ac_if;
1466 struct e1000_hw *hw = &sc->hw;
1467 struct e1000_fc_info *fc = &hw->fc;
1468 uint32_t pba = 0;
1469 uint16_t hwm;
1470
1471 /* Let the firmware know the OS is in control */
1472 igb_get_hw_control(sc);
1473
1474 /*
1475 * Packet Buffer Allocation (PBA)
1476 * Writing PBA sets the receive portion of the buffer
1477 * the remainder is used for the transmit buffer.
1478 */
1479 switch (hw->mac.type) {
1480 case e1000_82575:
1481 pba = E1000_PBA_32K;
1482 break;
1483
1484 case e1000_82576:
1485 case e1000_vfadapt:
1486 pba = E1000_READ_REG(hw, E1000_RXPBS);
1487 pba &= E1000_RXPBS_SIZE_MASK_82576;
1488 break;
1489
1490 case e1000_82580:
1491 case e1000_i350:
1492 case e1000_i354:
1493 case e1000_vfadapt_i350:
1494 pba = E1000_READ_REG(hw, E1000_RXPBS);
1495 pba = e1000_rxpbs_adjust_82580(pba);
1496 break;
1497
1498 case e1000_i210:
1499 case e1000_i211:
1500 pba = E1000_PBA_34K;
1501 break;
1502
1503 default:
1504 break;
1505 }
1506
1507 /* Special needs in case of Jumbo frames */
1508 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1509 uint32_t tx_space, min_tx, min_rx;
1510
1511 pba = E1000_READ_REG(hw, E1000_PBA);
1512 tx_space = pba >> 16;
1513 pba &= 0xffff;
1514
1515 min_tx = (sc->max_frame_size +
1516 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1517 min_tx = roundup2(min_tx, 1024);
1518 min_tx >>= 10;
1519 min_rx = sc->max_frame_size;
1520 min_rx = roundup2(min_rx, 1024);
1521 min_rx >>= 10;
1522 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1523 pba = pba - (min_tx - tx_space);
1524 /*
1525 * if short on rx space, rx wins
1526 * and must trump tx adjustment
1527 */
1528 if (pba < min_rx)
1529 pba = min_rx;
1530 }
1531 E1000_WRITE_REG(hw, E1000_PBA, pba);
1532 }
1533
1534 /*
1535 * These parameters control the automatic generation (Tx) and
1536 * response (Rx) to Ethernet PAUSE frames.
1537 * - High water mark should allow for at least two frames to be
1538 * received after sending an XOFF.
1539 * - Low water mark works best when it is very near the high water mark.
1540 * This allows the receiver to restart by sending XON when it has
1541 * drained a bit.
1542 */
1543 hwm = min(((pba << 10) * 9 / 10),
1544 ((pba << 10) - 2 * sc->max_frame_size));
1545
1546 if (hw->mac.type < e1000_82576) {
1547 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1548 fc->low_water = fc->high_water - 8;
1549 } else {
1550 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1551 fc->low_water = fc->high_water - 16;
1552 }
1553 fc->pause_time = IGB_FC_PAUSE_TIME;
1554 fc->send_xon = TRUE;
1555 fc->requested_mode = e1000_ifmedia2fc(sc->ifm_flowctrl);
1556
1557 /* Issue a global reset */
1558 e1000_reset_hw(hw);
1559 E1000_WRITE_REG(hw, E1000_WUC, 0);
1560
1561 /* Reset for AutoMediaDetect */
1562 if (media_reset) {
1563 e1000_setup_init_funcs(hw, TRUE);
1564 e1000_get_bus_info(hw);
1565 }
1566
1567 if (e1000_init_hw(hw) < 0)
1568 if_printf(ifp, "Hardware Initialization Failed\n");
1569
1570 /* Setup DMA Coalescing */
1571 igb_init_dmac(sc, pba);
1572
1573 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1574 e1000_get_phy_info(hw);
1575 e1000_check_for_link(hw);
1576 }
1577
1578 static void
igb_setup_ifp(struct igb_softc * sc)1579 igb_setup_ifp(struct igb_softc *sc)
1580 {
1581 struct ifnet *ifp = &sc->arpcom.ac_if;
1582 int i;
1583
1584 ifp->if_softc = sc;
1585 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1586 ifp->if_init = igb_init;
1587 ifp->if_ioctl = igb_ioctl;
1588 ifp->if_start = igb_start;
1589 ifp->if_serialize = igb_serialize;
1590 ifp->if_deserialize = igb_deserialize;
1591 ifp->if_tryserialize = igb_tryserialize;
1592 #ifdef INVARIANTS
1593 ifp->if_serialize_assert = igb_serialize_assert;
1594 #endif
1595 #ifdef IFPOLL_ENABLE
1596 ifp->if_npoll = igb_npoll;
1597 #endif
1598
1599 ifp->if_nmbclusters = sc->rx_ring_cnt * sc->rx_rings[0].num_rx_desc;
1600
1601 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1602 ifq_set_ready(&ifp->if_snd);
1603 ifq_set_subq_cnt(&ifp->if_snd, sc->tx_ring_cnt);
1604
1605 ifp->if_mapsubq = ifq_mapsubq_modulo;
1606 ifq_set_subq_divisor(&ifp->if_snd, 1);
1607
1608 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1609
1610 ifp->if_capabilities =
1611 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_TSO;
1612 if (IGB_ENABLE_HWRSS(sc))
1613 ifp->if_capabilities |= IFCAP_RSS;
1614 ifp->if_capenable = ifp->if_capabilities;
1615 ifp->if_hwassist = IGB_CSUM_FEATURES | CSUM_TSO;
1616
1617 /*
1618 * Tell the upper layer(s) we support long frames
1619 */
1620 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1621
1622 /* Setup TX rings and subqueues */
1623 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1624 struct ifaltq_subque *ifsq = ifq_get_subq(&ifp->if_snd, i);
1625 struct igb_tx_ring *txr = &sc->tx_rings[i];
1626
1627 ifsq_set_cpuid(ifsq, txr->tx_intr_cpuid);
1628 ifsq_set_priv(ifsq, txr);
1629 ifsq_set_hw_serialize(ifsq, &txr->tx_serialize);
1630 txr->ifsq = ifsq;
1631
1632 ifsq_watchdog_init(&txr->tx_watchdog, ifsq, igb_watchdog, 0);
1633 }
1634
1635 /*
1636 * Specify the media types supported by this adapter and register
1637 * callbacks to update media and link information
1638 */
1639 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1640 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1641 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1642 0, NULL);
1643 } else {
1644 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1645 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1646 0, NULL);
1647 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1648 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1649 0, NULL);
1650 if (sc->hw.phy.type != e1000_phy_ife) {
1651 ifmedia_add(&sc->media,
1652 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1653 }
1654 }
1655 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1656 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO | sc->ifm_flowctrl);
1657 }
1658
1659 static void
igb_add_sysctl(struct igb_softc * sc)1660 igb_add_sysctl(struct igb_softc *sc)
1661 {
1662 struct sysctl_ctx_list *ctx;
1663 struct sysctl_oid *tree;
1664 char node[32];
1665 int i;
1666
1667 ctx = device_get_sysctl_ctx(sc->dev);
1668 tree = device_get_sysctl_tree(sc->dev);
1669 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1670 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1671 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1672 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1673 "# of RX rings used");
1674 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1675 OID_AUTO, "txr", CTLFLAG_RD, &sc->tx_ring_cnt, 0, "# of TX rings");
1676 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1677 OID_AUTO, "txr_inuse", CTLFLAG_RD, &sc->tx_ring_inuse, 0,
1678 "# of TX rings used");
1679 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1680 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1681 "# of RX descs");
1682 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1683 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1684 "# of TX descs");
1685
1686 #define IGB_ADD_INTR_RATE_SYSCTL(sc, use, name) \
1687 do { \
1688 igb_add_intr_rate_sysctl(sc, IGB_INTR_USE_##use, #name "_intr_rate", \
1689 #use " interrupt rate"); \
1690 } while (0)
1691
1692 IGB_ADD_INTR_RATE_SYSCTL(sc, RXTX, rxtx);
1693 IGB_ADD_INTR_RATE_SYSCTL(sc, RX, rx);
1694 IGB_ADD_INTR_RATE_SYSCTL(sc, TX, tx);
1695 IGB_ADD_INTR_RATE_SYSCTL(sc, STATUS, sts);
1696
1697 #undef IGB_ADD_INTR_RATE_SYSCTL
1698
1699 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1700 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1701 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
1702 "# of segments per TX interrupt");
1703
1704 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1705 OID_AUTO, "tx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1706 sc, 0, igb_sysctl_tx_wreg_nsegs, "I",
1707 "# of segments sent before write to hardware register");
1708
1709 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1710 OID_AUTO, "rx_wreg_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1711 sc, 0, igb_sysctl_rx_wreg_nsegs, "I",
1712 "# of segments received before write to hardware register");
1713
1714 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
1715 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1716 OID_AUTO, "tx_msix_cpumap", CTLTYPE_OPAQUE | CTLFLAG_RD,
1717 sc->tx_rmap_intr, 0, if_ringmap_cpumap_sysctl, "I",
1718 "TX MSI-X CPU map");
1719 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1720 OID_AUTO, "rx_msix_cpumap", CTLTYPE_OPAQUE | CTLFLAG_RD,
1721 sc->rx_rmap_intr, 0, if_ringmap_cpumap_sysctl, "I",
1722 "RX MSI-X CPU map");
1723 }
1724 #ifdef IFPOLL_ENABLE
1725 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1726 OID_AUTO, "tx_poll_cpumap", CTLTYPE_OPAQUE | CTLFLAG_RD,
1727 sc->tx_rmap, 0, if_ringmap_cpumap_sysctl, "I",
1728 "TX polling CPU map");
1729 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1730 OID_AUTO, "rx_poll_cpumap", CTLTYPE_OPAQUE | CTLFLAG_RD,
1731 sc->rx_rmap, 0, if_ringmap_cpumap_sysctl, "I",
1732 "RX polling CPU map");
1733 #endif
1734
1735 #ifdef IGB_RSS_DEBUG
1736 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree),
1737 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1738 "RSS debug level");
1739 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1740 ksnprintf(node, sizeof(node), "rx%d_pkt", i);
1741 SYSCTL_ADD_ULONG(ctx,
1742 SYSCTL_CHILDREN(tree), OID_AUTO, node,
1743 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1744 }
1745 #endif
1746 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1747 struct igb_tx_ring *txr = &sc->tx_rings[i];
1748
1749 #ifdef IGB_TSS_DEBUG
1750 ksnprintf(node, sizeof(node), "tx%d_pkt", i);
1751 SYSCTL_ADD_ULONG(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, node,
1752 CTLFLAG_RW, &txr->tx_packets, "TXed packets");
1753 #endif
1754 ksnprintf(node, sizeof(node), "tx%d_nmbuf", i);
1755 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, node,
1756 CTLFLAG_RD, &txr->tx_nmbuf, 0, "# of pending TX mbufs");
1757
1758 ksnprintf(node, sizeof(node), "tx%d_gc", i);
1759 SYSCTL_ADD_ULONG(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, node,
1760 CTLFLAG_RW, &txr->tx_gc, "# of TX desc GC");
1761 }
1762
1763 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree),
1764 OID_AUTO, "dumpreg", CTLTYPE_INT | CTLFLAG_RW,
1765 sc, 0, igb_sysctl_reg_dump, "I", "dump registers");
1766 }
1767
1768 static int
igb_alloc_rings(struct igb_softc * sc)1769 igb_alloc_rings(struct igb_softc *sc)
1770 {
1771 int error, i;
1772
1773 /*
1774 * Create top level busdma tag
1775 */
1776 error = bus_dma_tag_create(NULL, 1, 0,
1777 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
1778 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1779 &sc->parent_tag);
1780 if (error) {
1781 device_printf(sc->dev, "could not create top level DMA tag\n");
1782 return error;
1783 }
1784
1785 /*
1786 * Allocate TX descriptor rings and buffers
1787 */
1788 sc->tx_rings = kmalloc(sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1789 M_DEVBUF,
1790 M_WAITOK | M_ZERO | M_CACHEALIGN);
1791 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1792 struct igb_tx_ring *txr = &sc->tx_rings[i];
1793
1794 /* Set up some basics */
1795 txr->sc = sc;
1796 txr->me = i;
1797 txr->tx_intr_cpuid = -1;
1798 lwkt_serialize_init(&txr->tx_serialize);
1799 callout_init_mp(&txr->tx_gc_timer);
1800
1801 error = igb_create_tx_ring(txr);
1802 if (error)
1803 return error;
1804 }
1805
1806 /*
1807 * Allocate RX descriptor rings and buffers
1808 */
1809 sc->rx_rings = kmalloc(sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1810 M_DEVBUF,
1811 M_WAITOK | M_ZERO | M_CACHEALIGN);
1812 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1813 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1814
1815 /* Set up some basics */
1816 rxr->sc = sc;
1817 rxr->me = i;
1818 lwkt_serialize_init(&rxr->rx_serialize);
1819
1820 error = igb_create_rx_ring(rxr);
1821 if (error)
1822 return error;
1823 }
1824
1825 return 0;
1826 }
1827
1828 static void
igb_free_rings(struct igb_softc * sc)1829 igb_free_rings(struct igb_softc *sc)
1830 {
1831 int i;
1832
1833 if (sc->tx_rings != NULL) {
1834 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1835 struct igb_tx_ring *txr = &sc->tx_rings[i];
1836
1837 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1838 }
1839 kfree(sc->tx_rings, M_DEVBUF);
1840 }
1841
1842 if (sc->rx_rings != NULL) {
1843 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1844 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1845
1846 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1847 }
1848 kfree(sc->rx_rings, M_DEVBUF);
1849 }
1850 }
1851
1852 static int
igb_create_tx_ring(struct igb_tx_ring * txr)1853 igb_create_tx_ring(struct igb_tx_ring *txr)
1854 {
1855 int tsize, error, i, ntxd;
1856
1857 /*
1858 * Validate number of transmit descriptors. It must not exceed
1859 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1860 */
1861 ntxd = device_getenv_int(txr->sc->dev, "txd", igb_txd);
1862 if ((ntxd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN != 0 ||
1863 ntxd > IGB_MAX_TXD || ntxd < IGB_MIN_TXD) {
1864 device_printf(txr->sc->dev,
1865 "Using %d TX descriptors instead of %d!\n",
1866 IGB_DEFAULT_TXD, ntxd);
1867 txr->num_tx_desc = IGB_DEFAULT_TXD;
1868 } else {
1869 txr->num_tx_desc = ntxd;
1870 }
1871
1872 /*
1873 * Allocate TX descriptor ring
1874 */
1875 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1876 IGB_DBA_ALIGN);
1877 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1878 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1879 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1880 if (txr->txdma.dma_vaddr == NULL) {
1881 device_printf(txr->sc->dev,
1882 "Unable to allocate TX Descriptor memory\n");
1883 return ENOMEM;
1884 }
1885 txr->tx_base = txr->txdma.dma_vaddr;
1886 bzero(txr->tx_base, tsize);
1887
1888 tsize = __VM_CACHELINE_ALIGN(
1889 sizeof(struct igb_tx_buf) * txr->num_tx_desc);
1890 txr->tx_buf = kmalloc(tsize, M_DEVBUF,
1891 M_WAITOK | M_ZERO | M_CACHEALIGN);
1892
1893 /*
1894 * Allocate TX head write-back buffer
1895 */
1896 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1897 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1898 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1899 if (txr->tx_hdr == NULL) {
1900 device_printf(txr->sc->dev,
1901 "Unable to allocate TX head write-back buffer\n");
1902 return ENOMEM;
1903 }
1904
1905 /*
1906 * Create DMA tag for TX buffers
1907 */
1908 error = bus_dma_tag_create(txr->sc->parent_tag,
1909 1, 0, /* alignment, bounds */
1910 BUS_SPACE_MAXADDR, /* lowaddr */
1911 BUS_SPACE_MAXADDR, /* highaddr */
1912 IGB_TSO_SIZE, /* maxsize */
1913 IGB_MAX_SCATTER, /* nsegments */
1914 PAGE_SIZE, /* maxsegsize */
1915 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1916 BUS_DMA_ONEBPAGE, /* flags */
1917 &txr->tx_tag);
1918 if (error) {
1919 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1920 kfree(txr->tx_buf, M_DEVBUF);
1921 txr->tx_buf = NULL;
1922 return error;
1923 }
1924
1925 /*
1926 * Create DMA maps for TX buffers
1927 */
1928 for (i = 0; i < txr->num_tx_desc; ++i) {
1929 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1930
1931 error = bus_dmamap_create(txr->tx_tag,
1932 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1933 if (error) {
1934 device_printf(txr->sc->dev,
1935 "Unable to create TX DMA map\n");
1936 igb_destroy_tx_ring(txr, i);
1937 return error;
1938 }
1939 }
1940
1941 if (txr->sc->hw.mac.type == e1000_82575)
1942 txr->tx_flags |= IGB_TXFLAG_TSO_IPLEN0;
1943
1944 /*
1945 * Initialize various watermark
1946 */
1947 if (txr->sc->hw.mac.type == e1000_82575) {
1948 /*
1949 * There no ways to GC pending TX mbufs in 'header
1950 * write back' mode with reduced # of RS TX descs,
1951 * since TDH does _not_ move for 82575.
1952 */
1953 txr->intr_nsegs = 1;
1954 } else {
1955 txr->intr_nsegs = txr->num_tx_desc / 16;
1956 }
1957 txr->wreg_nsegs = IGB_DEF_TXWREG_NSEGS;
1958
1959 return 0;
1960 }
1961
1962 static void
igb_free_tx_ring(struct igb_tx_ring * txr)1963 igb_free_tx_ring(struct igb_tx_ring *txr)
1964 {
1965 int i;
1966
1967 for (i = 0; i < txr->num_tx_desc; ++i) {
1968 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1969
1970 if (txbuf->m_head != NULL)
1971 igb_free_txbuf(txr, txbuf);
1972 }
1973 }
1974
1975 static void
igb_destroy_tx_ring(struct igb_tx_ring * txr,int ndesc)1976 igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1977 {
1978 int i;
1979
1980 if (txr->txdma.dma_vaddr != NULL) {
1981 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1982 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1983 txr->txdma.dma_map);
1984 bus_dma_tag_destroy(txr->txdma.dma_tag);
1985 txr->txdma.dma_vaddr = NULL;
1986 }
1987
1988 if (txr->tx_hdr != NULL) {
1989 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1990 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1991 txr->tx_hdr_dmap);
1992 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1993 txr->tx_hdr = NULL;
1994 }
1995
1996 if (txr->tx_buf == NULL)
1997 return;
1998
1999 for (i = 0; i < ndesc; ++i) {
2000 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
2001
2002 KKASSERT(txbuf->m_head == NULL);
2003 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
2004 }
2005 bus_dma_tag_destroy(txr->tx_tag);
2006
2007 kfree(txr->tx_buf, M_DEVBUF);
2008 txr->tx_buf = NULL;
2009 }
2010
2011 static void
igb_init_tx_ring(struct igb_tx_ring * txr)2012 igb_init_tx_ring(struct igb_tx_ring *txr)
2013 {
2014 /* Clear the old descriptor contents */
2015 bzero(txr->tx_base,
2016 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
2017
2018 /* Clear TX head write-back buffer */
2019 *(txr->tx_hdr) = 0;
2020
2021 /* Reset indices */
2022 txr->next_avail_desc = 0;
2023 txr->next_to_clean = 0;
2024 txr->tx_nsegs = 0;
2025 txr->tx_running = 0;
2026 txr->tx_nmbuf = 0;
2027
2028 /* Set number of descriptors available */
2029 txr->tx_avail = txr->num_tx_desc;
2030
2031 /* Enable this TX ring */
2032 txr->tx_flags |= IGB_TXFLAG_ENABLED;
2033 }
2034
2035 static void
igb_init_tx_unit(struct igb_softc * sc)2036 igb_init_tx_unit(struct igb_softc *sc)
2037 {
2038 struct e1000_hw *hw = &sc->hw;
2039 uint32_t tctl;
2040 int i;
2041
2042 /* Setup the Tx Descriptor Rings */
2043 for (i = 0; i < sc->tx_ring_inuse; ++i) {
2044 struct igb_tx_ring *txr = &sc->tx_rings[i];
2045 uint64_t bus_addr = txr->txdma.dma_paddr;
2046 uint64_t hdr_paddr = txr->tx_hdr_paddr;
2047 uint32_t txdctl = 0;
2048 uint32_t dca_txctrl;
2049
2050 E1000_WRITE_REG(hw, E1000_TDLEN(i),
2051 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
2052 E1000_WRITE_REG(hw, E1000_TDBAH(i),
2053 (uint32_t)(bus_addr >> 32));
2054 E1000_WRITE_REG(hw, E1000_TDBAL(i),
2055 (uint32_t)bus_addr);
2056
2057 /* Setup the HW Tx Head and Tail descriptor pointers */
2058 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
2059 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
2060
2061 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
2062 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
2063 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
2064
2065 /*
2066 * Don't set WB_on_EITR:
2067 * - 82575 does not have it
2068 * - It almost has no effect on 82576, see:
2069 * 82576 specification update errata #26
2070 * - It causes unnecessary bus traffic
2071 */
2072 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
2073 (uint32_t)(hdr_paddr >> 32));
2074 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
2075 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
2076
2077 /*
2078 * WTHRESH is ignored by the hardware, since header
2079 * write back mode is used.
2080 */
2081 txdctl |= IGB_TX_PTHRESH;
2082 txdctl |= IGB_TX_HTHRESH << 8;
2083 txdctl |= IGB_TX_WTHRESH << 16;
2084 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
2085 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
2086 }
2087
2088 if (sc->vf_ifp)
2089 return;
2090
2091 e1000_config_collision_dist(hw);
2092
2093 /* Program the Transmit Control Register */
2094 tctl = E1000_READ_REG(hw, E1000_TCTL);
2095 tctl &= ~E1000_TCTL_CT;
2096 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
2097 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
2098
2099 /* This write will effectively turn on the transmit unit. */
2100 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
2101 }
2102
2103 static boolean_t
igb_txcsum_ctx(struct igb_tx_ring * txr,struct mbuf * mp)2104 igb_txcsum_ctx(struct igb_tx_ring *txr, struct mbuf *mp)
2105 {
2106 struct e1000_adv_tx_context_desc *TXD;
2107 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
2108 int ehdrlen, ctxd, ip_hlen = 0;
2109 boolean_t offload = TRUE;
2110
2111 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
2112 offload = FALSE;
2113
2114 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
2115
2116 ctxd = txr->next_avail_desc;
2117 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
2118
2119 /*
2120 * In advanced descriptors the vlan tag must
2121 * be placed into the context descriptor, thus
2122 * we need to be here just for that setup.
2123 */
2124 if (mp->m_flags & M_VLANTAG) {
2125 uint16_t vlantag;
2126
2127 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
2128 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
2129 } else if (!offload) {
2130 return FALSE;
2131 }
2132
2133 ehdrlen = mp->m_pkthdr.csum_lhlen;
2134 KASSERT(ehdrlen > 0, ("invalid ether hlen"));
2135
2136 /* Set the ether header length */
2137 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
2138 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
2139 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
2140 ip_hlen = mp->m_pkthdr.csum_iphlen;
2141 KASSERT(ip_hlen > 0, ("invalid ip hlen"));
2142 }
2143 vlan_macip_lens |= ip_hlen;
2144
2145 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
2146 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
2147 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
2148 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
2149 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
2150
2151 /*
2152 * 82575 needs the TX context index added; the queue
2153 * index is used as TX context index here.
2154 */
2155 if (txr->sc->hw.mac.type == e1000_82575)
2156 mss_l4len_idx = txr->me << 4;
2157
2158 /* Now copy bits into descriptor */
2159 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
2160 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
2161 TXD->seqnum_seed = htole32(0);
2162 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
2163
2164 /* We've consumed the first desc, adjust counters */
2165 if (++ctxd == txr->num_tx_desc)
2166 ctxd = 0;
2167 txr->next_avail_desc = ctxd;
2168 --txr->tx_avail;
2169
2170 return offload;
2171 }
2172
2173 static void
igb_txeof(struct igb_tx_ring * txr,int hdr)2174 igb_txeof(struct igb_tx_ring *txr, int hdr)
2175 {
2176 int first, avail;
2177
2178 if (txr->tx_avail == txr->num_tx_desc)
2179 return;
2180
2181 first = txr->next_to_clean;
2182 if (first == hdr)
2183 return;
2184
2185 avail = txr->tx_avail;
2186 while (first != hdr) {
2187 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
2188
2189 KKASSERT(avail < txr->num_tx_desc);
2190 ++avail;
2191
2192 if (txbuf->m_head)
2193 igb_free_txbuf(txr, txbuf);
2194
2195 if (++first == txr->num_tx_desc)
2196 first = 0;
2197 }
2198 txr->next_to_clean = first;
2199 txr->tx_avail = avail;
2200
2201 /*
2202 * If we have a minimum free, clear OACTIVE
2203 * to tell the stack that it is OK to send packets.
2204 */
2205 if (txr->tx_avail > IGB_MAX_SCATTER + IGB_TX_RESERVED) {
2206 ifsq_clr_oactive(txr->ifsq);
2207
2208 /*
2209 * We have enough TX descriptors, turn off
2210 * the watchdog. We allow small amount of
2211 * packets (roughly intr_nsegs) pending on
2212 * the transmit ring.
2213 */
2214 ifsq_watchdog_set_count(&txr->tx_watchdog, 0);
2215 }
2216 txr->tx_running = IGB_TX_RUNNING;
2217 }
2218
2219 static void
igb_txgc(struct igb_tx_ring * txr)2220 igb_txgc(struct igb_tx_ring *txr)
2221 {
2222 int first, hdr;
2223 #ifdef INVARIANTS
2224 int avail;
2225 #endif
2226
2227 if (txr->tx_avail == txr->num_tx_desc)
2228 return;
2229
2230 hdr = E1000_READ_REG(&txr->sc->hw, E1000_TDH(txr->me)),
2231 first = txr->next_to_clean;
2232 if (first == hdr)
2233 goto done;
2234 txr->tx_gc++;
2235
2236 #ifdef INVARIANTS
2237 avail = txr->tx_avail;
2238 #endif
2239 while (first != hdr) {
2240 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
2241
2242 #ifdef INVARIANTS
2243 KKASSERT(avail < txr->num_tx_desc);
2244 ++avail;
2245 #endif
2246 if (txbuf->m_head)
2247 igb_free_txbuf(txr, txbuf);
2248
2249 if (++first == txr->num_tx_desc)
2250 first = 0;
2251 }
2252 done:
2253 if (txr->tx_nmbuf)
2254 txr->tx_running = IGB_TX_RUNNING;
2255 }
2256
2257 static int
igb_create_rx_ring(struct igb_rx_ring * rxr)2258 igb_create_rx_ring(struct igb_rx_ring *rxr)
2259 {
2260 int rsize, i, error, nrxd;
2261
2262 /*
2263 * Validate number of receive descriptors. It must not exceed
2264 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
2265 */
2266 nrxd = device_getenv_int(rxr->sc->dev, "rxd", igb_rxd);
2267 if ((nrxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN != 0 ||
2268 nrxd > IGB_MAX_RXD || nrxd < IGB_MIN_RXD) {
2269 device_printf(rxr->sc->dev,
2270 "Using %d RX descriptors instead of %d!\n",
2271 IGB_DEFAULT_RXD, nrxd);
2272 rxr->num_rx_desc = IGB_DEFAULT_RXD;
2273 } else {
2274 rxr->num_rx_desc = nrxd;
2275 }
2276
2277 /*
2278 * Allocate RX descriptor ring
2279 */
2280 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
2281 IGB_DBA_ALIGN);
2282 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
2283 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
2284 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
2285 &rxr->rxdma.dma_paddr);
2286 if (rxr->rxdma.dma_vaddr == NULL) {
2287 device_printf(rxr->sc->dev,
2288 "Unable to allocate RxDescriptor memory\n");
2289 return ENOMEM;
2290 }
2291 rxr->rx_base = rxr->rxdma.dma_vaddr;
2292 bzero(rxr->rx_base, rsize);
2293
2294 rsize = __VM_CACHELINE_ALIGN(
2295 sizeof(struct igb_rx_buf) * rxr->num_rx_desc);
2296 rxr->rx_buf = kmalloc(rsize, M_DEVBUF,
2297 M_WAITOK | M_ZERO | M_CACHEALIGN);
2298
2299 /*
2300 * Create DMA tag for RX buffers
2301 */
2302 error = bus_dma_tag_create(rxr->sc->parent_tag,
2303 1, 0, /* alignment, bounds */
2304 BUS_SPACE_MAXADDR, /* lowaddr */
2305 BUS_SPACE_MAXADDR, /* highaddr */
2306 MCLBYTES, /* maxsize */
2307 1, /* nsegments */
2308 MCLBYTES, /* maxsegsize */
2309 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2310 &rxr->rx_tag);
2311 if (error) {
2312 device_printf(rxr->sc->dev,
2313 "Unable to create RX payload DMA tag\n");
2314 kfree(rxr->rx_buf, M_DEVBUF);
2315 rxr->rx_buf = NULL;
2316 return error;
2317 }
2318
2319 /*
2320 * Create spare DMA map for RX buffers
2321 */
2322 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2323 &rxr->rx_sparemap);
2324 if (error) {
2325 device_printf(rxr->sc->dev,
2326 "Unable to create spare RX DMA maps\n");
2327 bus_dma_tag_destroy(rxr->rx_tag);
2328 kfree(rxr->rx_buf, M_DEVBUF);
2329 rxr->rx_buf = NULL;
2330 return error;
2331 }
2332
2333 /*
2334 * Create DMA maps for RX buffers
2335 */
2336 for (i = 0; i < rxr->num_rx_desc; i++) {
2337 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2338
2339 error = bus_dmamap_create(rxr->rx_tag,
2340 BUS_DMA_WAITOK, &rxbuf->map);
2341 if (error) {
2342 device_printf(rxr->sc->dev,
2343 "Unable to create RX DMA maps\n");
2344 igb_destroy_rx_ring(rxr, i);
2345 return error;
2346 }
2347 }
2348
2349 /*
2350 * Initialize various watermark
2351 */
2352 rxr->wreg_nsegs = IGB_DEF_RXWREG_NSEGS;
2353
2354 return 0;
2355 }
2356
2357 static void
igb_free_rx_ring(struct igb_rx_ring * rxr)2358 igb_free_rx_ring(struct igb_rx_ring *rxr)
2359 {
2360 int i;
2361
2362 for (i = 0; i < rxr->num_rx_desc; ++i) {
2363 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2364
2365 if (rxbuf->m_head != NULL) {
2366 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2367 m_freem(rxbuf->m_head);
2368 rxbuf->m_head = NULL;
2369 }
2370 }
2371
2372 if (rxr->fmp != NULL)
2373 m_freem(rxr->fmp);
2374 rxr->fmp = NULL;
2375 rxr->lmp = NULL;
2376 }
2377
2378 static void
igb_destroy_rx_ring(struct igb_rx_ring * rxr,int ndesc)2379 igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2380 {
2381 int i;
2382
2383 if (rxr->rxdma.dma_vaddr != NULL) {
2384 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2385 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2386 rxr->rxdma.dma_map);
2387 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2388 rxr->rxdma.dma_vaddr = NULL;
2389 }
2390
2391 if (rxr->rx_buf == NULL)
2392 return;
2393
2394 for (i = 0; i < ndesc; ++i) {
2395 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2396
2397 KKASSERT(rxbuf->m_head == NULL);
2398 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2399 }
2400 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2401 bus_dma_tag_destroy(rxr->rx_tag);
2402
2403 kfree(rxr->rx_buf, M_DEVBUF);
2404 rxr->rx_buf = NULL;
2405 }
2406
2407 static void
igb_setup_rxdesc(union e1000_adv_rx_desc * rxd,const struct igb_rx_buf * rxbuf)2408 igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2409 {
2410 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2411 rxd->wb.upper.status_error = 0;
2412 }
2413
2414 static int
igb_newbuf(struct igb_rx_ring * rxr,int i,boolean_t wait)2415 igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2416 {
2417 struct mbuf *m;
2418 bus_dma_segment_t seg;
2419 bus_dmamap_t map;
2420 struct igb_rx_buf *rxbuf;
2421 int error, nseg;
2422
2423 m = m_getcl(wait ? M_WAITOK : M_NOWAIT, MT_DATA, M_PKTHDR);
2424 if (m == NULL) {
2425 if (wait) {
2426 if_printf(&rxr->sc->arpcom.ac_if,
2427 "Unable to allocate RX mbuf\n");
2428 }
2429 return ENOBUFS;
2430 }
2431 m->m_len = m->m_pkthdr.len = MCLBYTES;
2432
2433 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2434 m_adj(m, ETHER_ALIGN);
2435
2436 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2437 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2438 if (error) {
2439 m_freem(m);
2440 if (wait) {
2441 if_printf(&rxr->sc->arpcom.ac_if,
2442 "Unable to load RX mbuf\n");
2443 }
2444 return error;
2445 }
2446
2447 rxbuf = &rxr->rx_buf[i];
2448 if (rxbuf->m_head != NULL)
2449 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2450
2451 map = rxbuf->map;
2452 rxbuf->map = rxr->rx_sparemap;
2453 rxr->rx_sparemap = map;
2454
2455 rxbuf->m_head = m;
2456 rxbuf->paddr = seg.ds_addr;
2457
2458 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2459 return 0;
2460 }
2461
2462 static int
igb_init_rx_ring(struct igb_rx_ring * rxr)2463 igb_init_rx_ring(struct igb_rx_ring *rxr)
2464 {
2465 int i;
2466
2467 /* Clear the ring contents */
2468 bzero(rxr->rx_base,
2469 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
2470
2471 /* Now replenish the ring mbufs */
2472 for (i = 0; i < rxr->num_rx_desc; ++i) {
2473 int error;
2474
2475 error = igb_newbuf(rxr, i, TRUE);
2476 if (error)
2477 return error;
2478 }
2479
2480 /* Setup our descriptor indices */
2481 rxr->next_to_check = 0;
2482
2483 rxr->fmp = NULL;
2484 rxr->lmp = NULL;
2485 rxr->discard = FALSE;
2486
2487 return 0;
2488 }
2489
2490 static void
igb_init_rx_unit(struct igb_softc * sc,boolean_t polling)2491 igb_init_rx_unit(struct igb_softc *sc, boolean_t polling)
2492 {
2493 struct ifnet *ifp = &sc->arpcom.ac_if;
2494 struct e1000_hw *hw = &sc->hw;
2495 uint32_t rctl, rxcsum, srrctl = 0;
2496 int i;
2497
2498 /*
2499 * Make sure receives are disabled while setting
2500 * up the descriptor ring
2501 */
2502 rctl = E1000_READ_REG(hw, E1000_RCTL);
2503 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2504
2505 #if 0
2506 /*
2507 ** Set up for header split
2508 */
2509 if (igb_header_split) {
2510 /* Use a standard mbuf for the header */
2511 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2512 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2513 } else
2514 #endif
2515 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2516
2517 /*
2518 ** Set up for jumbo frames
2519 */
2520 if (ifp->if_mtu > ETHERMTU) {
2521 rctl |= E1000_RCTL_LPE;
2522 #if 0
2523 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2524 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2525 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2526 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2527 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2528 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2529 }
2530 /* Set maximum packet len */
2531 psize = adapter->max_frame_size;
2532 /* are we on a vlan? */
2533 if (adapter->ifp->if_vlantrunk != NULL)
2534 psize += VLAN_TAG_SIZE;
2535 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2536 #else
2537 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2538 rctl |= E1000_RCTL_SZ_2048;
2539 #endif
2540 } else {
2541 rctl &= ~E1000_RCTL_LPE;
2542 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2543 rctl |= E1000_RCTL_SZ_2048;
2544 }
2545
2546 /*
2547 * If TX flow control is disabled and more the 1 RX rings
2548 * are enabled, enable DROP.
2549 *
2550 * This drops frames rather than hanging the RX MAC for all
2551 * RX rings.
2552 */
2553 if (sc->rx_ring_inuse > 1 &&
2554 (sc->ifm_flowctrl & IFM_ETH_TXPAUSE) == 0) {
2555 srrctl |= E1000_SRRCTL_DROP_EN;
2556 if (bootverbose)
2557 if_printf(ifp, "enable RX drop\n");
2558 }
2559
2560 /* Setup the Base and Length of the Rx Descriptor Rings */
2561 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2562 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2563 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2564 uint32_t rxdctl;
2565
2566 E1000_WRITE_REG(hw, E1000_RDLEN(i),
2567 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
2568 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2569 (uint32_t)(bus_addr >> 32));
2570 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2571 (uint32_t)bus_addr);
2572 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2573 /* Enable this Queue */
2574 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2575 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2576 rxdctl &= 0xFFF00000;
2577 rxdctl |= IGB_RX_PTHRESH;
2578 rxdctl |= IGB_RX_HTHRESH << 8;
2579 /*
2580 * Don't set WTHRESH to a value above 1 on 82576, see:
2581 * 82576 specification update errata #26
2582 */
2583 rxdctl |= IGB_RX_WTHRESH << 16;
2584 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2585 }
2586
2587 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2588 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2589
2590 /*
2591 * Receive Checksum Offload for TCP and UDP
2592 *
2593 * Checksum offloading is also enabled if multiple receive
2594 * queue is to be supported, since we need it to figure out
2595 * fragments.
2596 */
2597 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2598 /*
2599 * NOTE:
2600 * PCSD must be enabled to enable multiple
2601 * receive queues.
2602 */
2603 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2604 E1000_RXCSUM_PCSD;
2605 } else {
2606 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2607 E1000_RXCSUM_PCSD);
2608 }
2609 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2610
2611 if (sc->rx_ring_inuse > 1) {
2612 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
2613 const struct if_ringmap *rm;
2614 uint32_t reta_shift;
2615 int j, r;
2616
2617 /*
2618 * NOTE:
2619 * When we reach here, RSS has already been disabled
2620 * in igb_stop(), so we could safely configure RSS key
2621 * and redirect table.
2622 */
2623
2624 /*
2625 * Configure RSS key
2626 */
2627 toeplitz_get_key(key, sizeof(key));
2628 for (i = 0; i < IGB_NRSSRK; ++i) {
2629 uint32_t rssrk;
2630
2631 rssrk = IGB_RSSRK_VAL(key, i);
2632 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2633
2634 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
2635 }
2636
2637 /*
2638 * Configure RSS redirect table
2639 */
2640 if (polling)
2641 rm = sc->rx_rmap;
2642 else
2643 rm = sc->rx_rmap_intr;
2644 if_ringmap_rdrtable(rm, sc->rdr_table, IGB_RDRTABLE_SIZE);
2645
2646 reta_shift = IGB_RETA_SHIFT;
2647 if (hw->mac.type == e1000_82575)
2648 reta_shift = IGB_RETA_SHIFT_82575;
2649
2650 r = 0;
2651 for (j = 0; j < IGB_NRETA; ++j) {
2652 uint32_t reta = 0;
2653
2654 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2655 uint32_t q;
2656
2657 q = sc->rdr_table[r] << reta_shift;
2658 reta |= q << (8 * i);
2659 ++r;
2660 }
2661 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2662 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2663 }
2664
2665 /*
2666 * Enable multiple receive queues.
2667 * Enable IPv4 RSS standard hash functions.
2668 * Disable RSS interrupt on 82575
2669 */
2670 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2671 E1000_MRQC_ENABLE_RSS_4Q |
2672 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2673 E1000_MRQC_RSS_FIELD_IPV4);
2674 }
2675
2676 /* Setup the Receive Control Register */
2677 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2678 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2679 E1000_RCTL_RDMTS_HALF |
2680 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2681 /* Strip CRC bytes. */
2682 rctl |= E1000_RCTL_SECRC;
2683 /* Make sure VLAN Filters are off */
2684 rctl &= ~E1000_RCTL_VFE;
2685 /* Don't store bad packets */
2686 rctl &= ~E1000_RCTL_SBP;
2687
2688 /* Enable Receives */
2689 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2690
2691 /*
2692 * Setup the HW Rx Head and Tail Descriptor Pointers
2693 * - needs to be after enable
2694 */
2695 for (i = 0; i < sc->rx_ring_inuse; ++i) {
2696 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2697
2698 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
2699 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
2700 }
2701 }
2702
2703 static void
igb_rx_refresh(struct igb_rx_ring * rxr,int i)2704 igb_rx_refresh(struct igb_rx_ring *rxr, int i)
2705 {
2706 if (--i < 0)
2707 i = rxr->num_rx_desc - 1;
2708 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2709 }
2710
2711 static void
igb_rxeof(struct igb_rx_ring * rxr,int count)2712 igb_rxeof(struct igb_rx_ring *rxr, int count)
2713 {
2714 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2715 union e1000_adv_rx_desc *cur;
2716 uint32_t staterr;
2717 int i, ncoll = 0, cpuid = mycpuid;
2718
2719 i = rxr->next_to_check;
2720 cur = &rxr->rx_base[i];
2721 staterr = le32toh(cur->wb.upper.status_error);
2722
2723 if ((staterr & E1000_RXD_STAT_DD) == 0)
2724 return;
2725
2726 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
2727 struct pktinfo *pi = NULL, pi0;
2728 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2729 struct mbuf *m = NULL;
2730 boolean_t eop;
2731
2732 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2733 if (eop)
2734 --count;
2735
2736 ++ncoll;
2737 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2738 !rxr->discard) {
2739 struct mbuf *mp = rxbuf->m_head;
2740 uint32_t hash, hashtype;
2741 uint16_t vlan;
2742 int len;
2743
2744 len = le16toh(cur->wb.upper.length);
2745 if ((rxr->sc->hw.mac.type == e1000_i350 ||
2746 rxr->sc->hw.mac.type == e1000_i354) &&
2747 (staterr & E1000_RXDEXT_STATERR_LB))
2748 vlan = be16toh(cur->wb.upper.vlan);
2749 else
2750 vlan = le16toh(cur->wb.upper.vlan);
2751
2752 hash = le32toh(cur->wb.lower.hi_dword.rss);
2753 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2754 E1000_RXDADV_RSSTYPE_MASK;
2755
2756 IGB_RSS_DPRINTF(rxr->sc, 10,
2757 "ring%d, hash 0x%08x, hashtype %u\n",
2758 rxr->me, hash, hashtype);
2759
2760 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2761 BUS_DMASYNC_POSTREAD);
2762
2763 if (igb_newbuf(rxr, i, FALSE) != 0) {
2764 IFNET_STAT_INC(ifp, iqdrops, 1);
2765 goto discard;
2766 }
2767
2768 mp->m_len = len;
2769 if (rxr->fmp == NULL) {
2770 mp->m_pkthdr.len = len;
2771 rxr->fmp = mp;
2772 rxr->lmp = mp;
2773 } else {
2774 rxr->lmp->m_next = mp;
2775 rxr->lmp = rxr->lmp->m_next;
2776 rxr->fmp->m_pkthdr.len += len;
2777 }
2778
2779 if (eop) {
2780 m = rxr->fmp;
2781 rxr->fmp = NULL;
2782 rxr->lmp = NULL;
2783
2784 m->m_pkthdr.rcvif = ifp;
2785 IFNET_STAT_INC(ifp, ipackets, 1);
2786
2787 if (ifp->if_capenable & IFCAP_RXCSUM)
2788 igb_rxcsum(staterr, m);
2789
2790 if (staterr & E1000_RXD_STAT_VP) {
2791 m->m_pkthdr.ether_vlantag = vlan;
2792 m->m_flags |= M_VLANTAG;
2793 }
2794
2795 if (ifp->if_capenable & IFCAP_RSS) {
2796 pi = igb_rssinfo(m, &pi0,
2797 hash, hashtype, staterr);
2798 }
2799 #ifdef IGB_RSS_DEBUG
2800 rxr->rx_packets++;
2801 #endif
2802 }
2803 } else {
2804 IFNET_STAT_INC(ifp, ierrors, 1);
2805 discard:
2806 igb_setup_rxdesc(cur, rxbuf);
2807 if (!eop)
2808 rxr->discard = TRUE;
2809 else
2810 rxr->discard = FALSE;
2811 if (rxr->fmp != NULL) {
2812 m_freem(rxr->fmp);
2813 rxr->fmp = NULL;
2814 rxr->lmp = NULL;
2815 }
2816 m = NULL;
2817 }
2818
2819 if (m != NULL)
2820 ifp->if_input(ifp, m, pi, cpuid);
2821
2822 /* Advance our pointers to the next descriptor. */
2823 if (++i == rxr->num_rx_desc)
2824 i = 0;
2825
2826 if (ncoll >= rxr->wreg_nsegs) {
2827 igb_rx_refresh(rxr, i);
2828 ncoll = 0;
2829 }
2830
2831 cur = &rxr->rx_base[i];
2832 staterr = le32toh(cur->wb.upper.status_error);
2833 }
2834 rxr->next_to_check = i;
2835
2836 if (ncoll > 0)
2837 igb_rx_refresh(rxr, i);
2838 }
2839
2840
2841 static void
igb_set_vlan(struct igb_softc * sc)2842 igb_set_vlan(struct igb_softc *sc)
2843 {
2844 struct e1000_hw *hw = &sc->hw;
2845 uint32_t reg;
2846 #if 0
2847 struct ifnet *ifp = sc->arpcom.ac_if;
2848 #endif
2849
2850 if (sc->vf_ifp) {
2851 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2852 return;
2853 }
2854
2855 reg = E1000_READ_REG(hw, E1000_CTRL);
2856 reg |= E1000_CTRL_VME;
2857 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2858
2859 #if 0
2860 /* Enable the Filter Table */
2861 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2862 reg = E1000_READ_REG(hw, E1000_RCTL);
2863 reg &= ~E1000_RCTL_CFIEN;
2864 reg |= E1000_RCTL_VFE;
2865 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2866 }
2867 #endif
2868
2869 /* Update the frame size */
2870 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2871 sc->max_frame_size + VLAN_TAG_SIZE);
2872
2873 #if 0
2874 /* Don't bother with table if no vlans */
2875 if ((adapter->num_vlans == 0) ||
2876 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2877 return;
2878 /*
2879 ** A soft reset zero's out the VFTA, so
2880 ** we need to repopulate it now.
2881 */
2882 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2883 if (adapter->shadow_vfta[i] != 0) {
2884 if (adapter->vf_ifp)
2885 e1000_vfta_set_vf(hw,
2886 adapter->shadow_vfta[i], TRUE);
2887 else
2888 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2889 i, adapter->shadow_vfta[i]);
2890 }
2891 #endif
2892 }
2893
2894 static void
igb_enable_intr(struct igb_softc * sc)2895 igb_enable_intr(struct igb_softc *sc)
2896 {
2897 int i;
2898
2899 for (i = 0; i < sc->intr_cnt; ++i)
2900 lwkt_serialize_handler_enable(sc->intr_data[i].intr_serialize);
2901
2902 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2903 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
2904 E1000_WRITE_REG(&sc->hw, E1000_EIAC, sc->intr_mask);
2905 else
2906 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2907 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2908 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2909 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2910 } else {
2911 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2912 }
2913 E1000_WRITE_FLUSH(&sc->hw);
2914 }
2915
2916 static void
igb_disable_intr(struct igb_softc * sc)2917 igb_disable_intr(struct igb_softc *sc)
2918 {
2919 int i;
2920
2921 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
2922 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2923 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
2924 }
2925 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2926 E1000_WRITE_FLUSH(&sc->hw);
2927
2928 for (i = 0; i < sc->intr_cnt; ++i)
2929 lwkt_serialize_handler_disable(sc->intr_data[i].intr_serialize);
2930 }
2931
2932 /*
2933 * Bit of a misnomer, what this really means is
2934 * to enable OS management of the system... aka
2935 * to disable special hardware management features
2936 */
2937 static void
igb_get_mgmt(struct igb_softc * sc)2938 igb_get_mgmt(struct igb_softc *sc)
2939 {
2940 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2941 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2942 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2943
2944 /* disable hardware interception of ARP */
2945 manc &= ~E1000_MANC_ARP_EN;
2946
2947 /* enable receiving management packets to the host */
2948 manc |= E1000_MANC_EN_MNG2HOST;
2949 manc2h |= 1 << 5; /* Mng Port 623 */
2950 manc2h |= 1 << 6; /* Mng Port 664 */
2951 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2952 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2953 }
2954 }
2955
2956 /*
2957 * Give control back to hardware management controller
2958 * if there is one.
2959 */
2960 static void
igb_rel_mgmt(struct igb_softc * sc)2961 igb_rel_mgmt(struct igb_softc *sc)
2962 {
2963 if (sc->flags & IGB_FLAG_HAS_MGMT) {
2964 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2965
2966 /* Re-enable hardware interception of ARP */
2967 manc |= E1000_MANC_ARP_EN;
2968 manc &= ~E1000_MANC_EN_MNG2HOST;
2969
2970 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2971 }
2972 }
2973
2974 /*
2975 * Sets CTRL_EXT:DRV_LOAD bit.
2976 *
2977 * For ASF and Pass Through versions of f/w this means that
2978 * the driver is loaded.
2979 */
2980 static void
igb_get_hw_control(struct igb_softc * sc)2981 igb_get_hw_control(struct igb_softc *sc)
2982 {
2983 uint32_t ctrl_ext;
2984
2985 if (sc->vf_ifp)
2986 return;
2987
2988 /* Let firmware know the driver has taken over */
2989 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2990 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2991 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2992 }
2993
2994 /*
2995 * Resets CTRL_EXT:DRV_LOAD bit.
2996 *
2997 * For ASF and Pass Through versions of f/w this means that the
2998 * driver is no longer loaded.
2999 */
3000 static void
igb_rel_hw_control(struct igb_softc * sc)3001 igb_rel_hw_control(struct igb_softc *sc)
3002 {
3003 uint32_t ctrl_ext;
3004
3005 if (sc->vf_ifp)
3006 return;
3007
3008 /* Let firmware taken over control of h/w */
3009 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
3010 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
3011 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
3012 }
3013
3014 static boolean_t
igb_is_valid_ether_addr(const uint8_t * addr)3015 igb_is_valid_ether_addr(const uint8_t *addr)
3016 {
3017 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
3018
3019 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
3020 return FALSE;
3021 return TRUE;
3022 }
3023
3024 /*
3025 * Enable PCI Wake On Lan capability
3026 */
3027 static void
igb_enable_wol(struct igb_softc * sc)3028 igb_enable_wol(struct igb_softc *sc)
3029 {
3030 device_t dev = sc->dev;
3031 int error = 0;
3032 uint32_t pmc, ctrl;
3033 uint16_t status;
3034
3035 if (pci_find_extcap(dev, PCIY_PMG, &pmc) != 0) {
3036 device_printf(dev, "no PMG\n");
3037 return;
3038 }
3039
3040 /*
3041 * Set the type of wakeup.
3042 */
3043 sc->wol &= ~(E1000_WUFC_EX | E1000_WUFC_MC);
3044 if ((sc->wol & (E1000_WUFC_EX | E1000_WUFC_MAG | E1000_WUFC_MC)) == 0)
3045 goto pme;
3046
3047 /*
3048 * Advertise the wakeup capabilities.
3049 */
3050 ctrl = E1000_READ_REG(&sc->hw, E1000_CTRL);
3051 ctrl |= (E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN3);
3052 E1000_WRITE_REG(&sc->hw, E1000_CTRL, ctrl);
3053
3054 /*
3055 * Keep the laser running on Fiber adapters.
3056 */
3057 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
3058 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
3059 uint32_t ctrl_ext;
3060
3061 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
3062 ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
3063 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT, ctrl_ext);
3064 }
3065
3066 error = igb_enable_phy_wol(sc);
3067 if (error)
3068 goto pme;
3069
3070 /* XXX will this happen? ich/pch specific. */
3071 if (sc->hw.phy.type == e1000_phy_igp_3)
3072 e1000_igp3_phy_powerdown_workaround_ich8lan(&sc->hw);
3073
3074 pme:
3075 status = pci_read_config(dev, pmc + PCIR_POWER_STATUS, 2);
3076 status &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
3077 if (!error)
3078 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
3079 pci_write_config(dev, pmc + PCIR_POWER_STATUS, status, 2);
3080 }
3081
3082 /*
3083 * WOL in the newer chipset interfaces (pchlan)
3084 * require thing to be copied into the phy
3085 */
3086 static int
igb_enable_phy_wol(struct igb_softc * sc)3087 igb_enable_phy_wol(struct igb_softc *sc)
3088 {
3089 struct e1000_hw *hw = &sc->hw;
3090 uint32_t mreg;
3091 uint16_t preg;
3092 int ret = 0, i;
3093
3094 /* Copy MAC RARs to PHY RARs */
3095 e1000_copy_rx_addrs_to_phy_ich8lan(hw);
3096
3097 /* Copy MAC MTA to PHY MTA */
3098 for (i = 0; i < hw->mac.mta_reg_count; i++) {
3099 mreg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
3100 e1000_write_phy_reg(hw, BM_MTA(i), (uint16_t)(mreg & 0xFFFF));
3101 e1000_write_phy_reg(hw, BM_MTA(i) + 1,
3102 (uint16_t)((mreg >> 16) & 0xFFFF));
3103 }
3104
3105 /* Configure PHY Rx Control register */
3106 e1000_read_phy_reg(hw, BM_RCTL, &preg);
3107 mreg = E1000_READ_REG(hw, E1000_RCTL);
3108 if (mreg & E1000_RCTL_UPE)
3109 preg |= BM_RCTL_UPE;
3110 if (mreg & E1000_RCTL_MPE)
3111 preg |= BM_RCTL_MPE;
3112 preg &= ~(BM_RCTL_MO_MASK);
3113 if (mreg & E1000_RCTL_MO_3) {
3114 preg |= (((mreg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
3115 << BM_RCTL_MO_SHIFT);
3116 }
3117 if (mreg & E1000_RCTL_BAM)
3118 preg |= BM_RCTL_BAM;
3119 if (mreg & E1000_RCTL_PMCF)
3120 preg |= BM_RCTL_PMCF;
3121 mreg = E1000_READ_REG(hw, E1000_CTRL);
3122 if (mreg & E1000_CTRL_RFCE)
3123 preg |= BM_RCTL_RFCE;
3124 e1000_write_phy_reg(&sc->hw, BM_RCTL, preg);
3125
3126 /* Enable PHY wakeup in MAC register. */
3127 E1000_WRITE_REG(hw, E1000_WUC,
3128 E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN | E1000_WUC_APME);
3129 E1000_WRITE_REG(hw, E1000_WUFC, sc->wol);
3130
3131 /* Configure and enable PHY wakeup in PHY registers */
3132 e1000_write_phy_reg(hw, BM_WUFC, sc->wol);
3133 e1000_write_phy_reg(hw, BM_WUC, E1000_WUC_PME_EN);
3134 /* Activate PHY wakeup */
3135 ret = hw->phy.ops.acquire(hw);
3136 if (ret) {
3137 if_printf(&sc->arpcom.ac_if, "Could not acquire PHY\n");
3138 return ret;
3139 }
3140 e1000_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
3141 (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT));
3142 ret = e1000_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &preg);
3143 if (ret) {
3144 if_printf(&sc->arpcom.ac_if, "Could not read PHY page 769\n");
3145 goto out;
3146 }
3147 preg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
3148 ret = e1000_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, preg);
3149 if (ret) {
3150 if_printf(&sc->arpcom.ac_if,
3151 "Could not set PHY Host Wakeup bit\n");
3152 }
3153 out:
3154 hw->phy.ops.release(hw);
3155 return ret;
3156 }
3157
3158 static void
igb_update_stats_counters(struct igb_softc * sc)3159 igb_update_stats_counters(struct igb_softc *sc)
3160 {
3161 struct e1000_hw *hw = &sc->hw;
3162 struct e1000_hw_stats *stats;
3163 struct ifnet *ifp = &sc->arpcom.ac_if;
3164
3165 /*
3166 * The virtual function adapter has only a
3167 * small controlled set of stats, do only
3168 * those and return.
3169 */
3170 if (sc->vf_ifp) {
3171 igb_update_vf_stats_counters(sc);
3172 return;
3173 }
3174 stats = sc->stats;
3175
3176 if (sc->hw.phy.media_type == e1000_media_type_copper ||
3177 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
3178 stats->symerrs +=
3179 E1000_READ_REG(hw,E1000_SYMERRS);
3180 stats->sec += E1000_READ_REG(hw, E1000_SEC);
3181 }
3182
3183 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
3184 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
3185 stats->scc += E1000_READ_REG(hw, E1000_SCC);
3186 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
3187
3188 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
3189 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
3190 stats->colc += E1000_READ_REG(hw, E1000_COLC);
3191 stats->dc += E1000_READ_REG(hw, E1000_DC);
3192 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
3193 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
3194 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
3195
3196 /*
3197 * For watchdog management we need to know if we have been
3198 * paused during the last interval, so capture that here.
3199 */
3200 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
3201 stats->xoffrxc += sc->pause_frames;
3202 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
3203 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
3204 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
3205 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
3206 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
3207 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
3208 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
3209 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
3210 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
3211 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
3212 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
3213 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
3214
3215 /* For the 64-bit byte counters the low dword must be read first. */
3216 /* Both registers clear on the read of the high dword */
3217
3218 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
3219 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
3220 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
3221 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
3222
3223 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
3224 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
3225 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
3226 stats->roc += E1000_READ_REG(hw, E1000_ROC);
3227 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
3228
3229 stats->mgprc += E1000_READ_REG(hw, E1000_MGTPRC);
3230 stats->mgpdc += E1000_READ_REG(hw, E1000_MGTPDC);
3231 stats->mgptc += E1000_READ_REG(hw, E1000_MGTPTC);
3232
3233 stats->tor += E1000_READ_REG(hw, E1000_TORL) +
3234 ((uint64_t)E1000_READ_REG(hw, E1000_TORH) << 32);
3235 stats->tot += E1000_READ_REG(hw, E1000_TOTL) +
3236 ((uint64_t)E1000_READ_REG(hw, E1000_TOTH) << 32);
3237
3238 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
3239 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
3240 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
3241 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
3242 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
3243 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
3244 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
3245 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
3246 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
3247 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
3248
3249 /* Interrupt Counts */
3250
3251 stats->iac += E1000_READ_REG(hw, E1000_IAC);
3252 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
3253 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
3254 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
3255 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
3256 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
3257 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
3258 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
3259 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
3260
3261 /* Host to Card Statistics */
3262
3263 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
3264 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
3265 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
3266 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
3267 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
3268 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
3269 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
3270 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
3271 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
3272 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
3273 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
3274 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
3275 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
3276 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
3277
3278 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
3279 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
3280 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
3281 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
3282 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
3283 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
3284
3285 IFNET_STAT_SET(ifp, collisions, stats->colc);
3286
3287 /* Rx Errors */
3288 IFNET_STAT_SET(ifp, ierrors,
3289 stats->rxerrc + stats->crcerrs + stats->algnerrc +
3290 stats->ruc + stats->roc + stats->mpc + stats->cexterr);
3291
3292 /* Tx Errors */
3293 IFNET_STAT_SET(ifp, oerrors,
3294 stats->ecol + stats->latecol + sc->watchdog_events);
3295
3296 /* Driver specific counters */
3297 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
3298 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
3299 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
3300 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
3301 sc->packet_buf_alloc_tx =
3302 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
3303 sc->packet_buf_alloc_rx =
3304 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
3305 }
3306
3307 static void
igb_vf_init_stats(struct igb_softc * sc)3308 igb_vf_init_stats(struct igb_softc *sc)
3309 {
3310 struct e1000_hw *hw = &sc->hw;
3311 struct e1000_vf_stats *stats;
3312
3313 stats = sc->stats;
3314 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
3315 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
3316 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
3317 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
3318 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
3319 }
3320
3321 static void
igb_update_vf_stats_counters(struct igb_softc * sc)3322 igb_update_vf_stats_counters(struct igb_softc *sc)
3323 {
3324 struct e1000_hw *hw = &sc->hw;
3325 struct e1000_vf_stats *stats;
3326
3327 if (sc->link_speed == 0)
3328 return;
3329
3330 stats = sc->stats;
3331 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
3332 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
3333 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
3334 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
3335 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
3336 }
3337
3338 #ifdef IFPOLL_ENABLE
3339
3340 static void
igb_npoll_status(struct ifnet * ifp)3341 igb_npoll_status(struct ifnet *ifp)
3342 {
3343 struct igb_softc *sc = ifp->if_softc;
3344 uint32_t reg_icr;
3345
3346 ASSERT_SERIALIZED(&sc->main_serialize);
3347
3348 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3349 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3350 sc->hw.mac.get_link_status = 1;
3351 igb_update_link_status(sc);
3352 }
3353 }
3354
3355 static void
igb_npoll_tx(struct ifnet * ifp,void * arg,int cycle __unused)3356 igb_npoll_tx(struct ifnet *ifp, void *arg, int cycle __unused)
3357 {
3358 struct igb_tx_ring *txr = arg;
3359
3360 ASSERT_SERIALIZED(&txr->tx_serialize);
3361 igb_tx_intr(txr, *(txr->tx_hdr));
3362 igb_try_txgc(txr, 1);
3363 }
3364
3365 static void
igb_npoll_rx(struct ifnet * ifp __unused,void * arg,int cycle)3366 igb_npoll_rx(struct ifnet *ifp __unused, void *arg, int cycle)
3367 {
3368 struct igb_rx_ring *rxr = arg;
3369
3370 ASSERT_SERIALIZED(&rxr->rx_serialize);
3371
3372 igb_rxeof(rxr, cycle);
3373 }
3374
3375 static void
igb_npoll(struct ifnet * ifp,struct ifpoll_info * info)3376 igb_npoll(struct ifnet *ifp, struct ifpoll_info *info)
3377 {
3378 struct igb_softc *sc = ifp->if_softc;
3379 int i, txr_cnt, rxr_cnt;
3380
3381 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3382
3383 if (info) {
3384 int cpu;
3385
3386 info->ifpi_status.status_func = igb_npoll_status;
3387 info->ifpi_status.serializer = &sc->main_serialize;
3388
3389 txr_cnt = igb_get_txring_inuse(sc, TRUE);
3390 for (i = 0; i < txr_cnt; ++i) {
3391 struct igb_tx_ring *txr = &sc->tx_rings[i];
3392
3393 cpu = if_ringmap_cpumap(sc->tx_rmap, i);
3394 KKASSERT(cpu < netisr_ncpus);
3395 info->ifpi_tx[cpu].poll_func = igb_npoll_tx;
3396 info->ifpi_tx[cpu].arg = txr;
3397 info->ifpi_tx[cpu].serializer = &txr->tx_serialize;
3398 ifsq_set_cpuid(txr->ifsq, cpu);
3399 }
3400
3401 rxr_cnt = igb_get_rxring_inuse(sc, TRUE);
3402 for (i = 0; i < rxr_cnt; ++i) {
3403 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3404
3405 cpu = if_ringmap_cpumap(sc->rx_rmap, i);
3406 KKASSERT(cpu < netisr_ncpus);
3407 info->ifpi_rx[cpu].poll_func = igb_npoll_rx;
3408 info->ifpi_rx[cpu].arg = rxr;
3409 info->ifpi_rx[cpu].serializer = &rxr->rx_serialize;
3410 }
3411 } else {
3412 for (i = 0; i < sc->tx_ring_cnt; ++i) {
3413 struct igb_tx_ring *txr = &sc->tx_rings[i];
3414
3415 ifsq_set_cpuid(txr->ifsq, txr->tx_intr_cpuid);
3416 }
3417 }
3418 if (ifp->if_flags & IFF_RUNNING)
3419 igb_init(sc);
3420 }
3421
3422 #endif /* IFPOLL_ENABLE */
3423
3424 static void
igb_intr(void * xsc)3425 igb_intr(void *xsc)
3426 {
3427 struct igb_softc *sc = xsc;
3428 struct ifnet *ifp = &sc->arpcom.ac_if;
3429 uint32_t eicr;
3430
3431 ASSERT_SERIALIZED(&sc->main_serialize);
3432
3433 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
3434
3435 if (eicr == 0)
3436 return;
3437
3438 if (ifp->if_flags & IFF_RUNNING) {
3439 struct igb_tx_ring *txr = &sc->tx_rings[0];
3440 int i;
3441
3442 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3443 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3444
3445 if (eicr & rxr->rx_intr_mask) {
3446 lwkt_serialize_enter(&rxr->rx_serialize);
3447 igb_rxeof(rxr, -1);
3448 lwkt_serialize_exit(&rxr->rx_serialize);
3449 }
3450 }
3451
3452 if (eicr & txr->tx_intr_mask) {
3453 lwkt_serialize_enter(&txr->tx_serialize);
3454 igb_tx_intr(txr, *(txr->tx_hdr));
3455 lwkt_serialize_exit(&txr->tx_serialize);
3456 }
3457 }
3458
3459 if (eicr & E1000_EICR_OTHER) {
3460 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3461
3462 /* Link status change */
3463 if (icr & E1000_ICR_LSC) {
3464 sc->hw.mac.get_link_status = 1;
3465 igb_update_link_status(sc);
3466 }
3467 }
3468
3469 /*
3470 * Reading EICR has the side effect to clear interrupt mask,
3471 * so all interrupts need to be enabled here.
3472 */
3473 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
3474 }
3475
3476 static void
igb_intr_shared(void * xsc)3477 igb_intr_shared(void *xsc)
3478 {
3479 struct igb_softc *sc = xsc;
3480 struct ifnet *ifp = &sc->arpcom.ac_if;
3481 uint32_t reg_icr;
3482
3483 ASSERT_SERIALIZED(&sc->main_serialize);
3484
3485 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3486
3487 /* Hot eject? */
3488 if (reg_icr == 0xffffffff)
3489 return;
3490
3491 /* Definitely not our interrupt. */
3492 if (reg_icr == 0x0)
3493 return;
3494
3495 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3496 return;
3497
3498 if (ifp->if_flags & IFF_RUNNING) {
3499 if (reg_icr &
3500 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3501 int i;
3502
3503 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3504 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3505
3506 lwkt_serialize_enter(&rxr->rx_serialize);
3507 igb_rxeof(rxr, -1);
3508 lwkt_serialize_exit(&rxr->rx_serialize);
3509 }
3510 }
3511
3512 if (reg_icr & E1000_ICR_TXDW) {
3513 struct igb_tx_ring *txr = &sc->tx_rings[0];
3514
3515 lwkt_serialize_enter(&txr->tx_serialize);
3516 igb_tx_intr(txr, *(txr->tx_hdr));
3517 lwkt_serialize_exit(&txr->tx_serialize);
3518 }
3519 }
3520
3521 /* Link status change */
3522 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3523 sc->hw.mac.get_link_status = 1;
3524 igb_update_link_status(sc);
3525 }
3526
3527 if (reg_icr & E1000_ICR_RXO)
3528 sc->rx_overruns++;
3529 }
3530
3531 static int
igb_encap(struct igb_tx_ring * txr,struct mbuf ** m_headp,int * segs_used,int * idx)3532 igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp,
3533 int *segs_used, int *idx)
3534 {
3535 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3536 bus_dmamap_t map;
3537 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3538 union e1000_adv_tx_desc *txd = NULL;
3539 struct mbuf *m_head = *m_headp;
3540 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3541 int maxsegs, nsegs, i, j, error;
3542 uint32_t hdrlen = 0;
3543
3544 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3545 error = igb_tso_pullup(txr, m_headp);
3546 if (error)
3547 return error;
3548 m_head = *m_headp;
3549 }
3550
3551 /* Set basic descriptor constants */
3552 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3553 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3554 if (m_head->m_flags & M_VLANTAG)
3555 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3556
3557 /*
3558 * Map the packet for DMA.
3559 */
3560 tx_buf = &txr->tx_buf[txr->next_avail_desc];
3561 tx_buf_mapped = tx_buf;
3562 map = tx_buf->map;
3563
3564 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3565 if (maxsegs > IGB_MAX_SCATTER)
3566 maxsegs = IGB_MAX_SCATTER;
3567
3568 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3569 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3570 if (error) {
3571 if (error == ENOBUFS)
3572 txr->sc->mbuf_defrag_failed++;
3573 else
3574 txr->sc->no_tx_dma_setup++;
3575
3576 m_freem(*m_headp);
3577 *m_headp = NULL;
3578 return error;
3579 }
3580 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3581
3582 m_head = *m_headp;
3583
3584 /*
3585 * Set up the TX context descriptor, if any hardware offloading is
3586 * needed. This includes CSUM, VLAN, and TSO. It will consume one
3587 * TX descriptor.
3588 *
3589 * Unlike these chips' predecessors (em/emx), TX context descriptor
3590 * will _not_ interfere TX data fetching pipelining.
3591 */
3592 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3593 igb_tso_ctx(txr, m_head, &hdrlen);
3594 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3595 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3596 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3597 txr->tx_nsegs++;
3598 (*segs_used)++;
3599 } else if (igb_txcsum_ctx(txr, m_head)) {
3600 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
3601 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
3602 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3603 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
3604 txr->tx_nsegs++;
3605 (*segs_used)++;
3606 }
3607
3608 *segs_used += nsegs;
3609 txr->tx_nsegs += nsegs;
3610 if (txr->tx_nsegs >= txr->intr_nsegs) {
3611 /*
3612 * Report Status (RS) is turned on every intr_nsegs
3613 * descriptors (roughly).
3614 */
3615 txr->tx_nsegs = 0;
3616 cmd_rs = E1000_ADVTXD_DCMD_RS;
3617 }
3618
3619 /* Calculate payload length */
3620 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3621 << E1000_ADVTXD_PAYLEN_SHIFT);
3622
3623 /*
3624 * 82575 needs the TX context index added; the queue
3625 * index is used as TX context index here.
3626 */
3627 if (txr->sc->hw.mac.type == e1000_82575)
3628 olinfo_status |= txr->me << 4;
3629
3630 /* Set up our transmit descriptors */
3631 i = txr->next_avail_desc;
3632 for (j = 0; j < nsegs; j++) {
3633 bus_size_t seg_len;
3634 bus_addr_t seg_addr;
3635
3636 tx_buf = &txr->tx_buf[i];
3637 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3638 seg_addr = segs[j].ds_addr;
3639 seg_len = segs[j].ds_len;
3640
3641 txd->read.buffer_addr = htole64(seg_addr);
3642 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3643 txd->read.olinfo_status = htole32(olinfo_status);
3644 if (++i == txr->num_tx_desc)
3645 i = 0;
3646 tx_buf->m_head = NULL;
3647 }
3648
3649 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3650 txr->next_avail_desc = i;
3651 txr->tx_avail -= nsegs;
3652 txr->tx_nmbuf++;
3653
3654 tx_buf->m_head = m_head;
3655 tx_buf_mapped->map = tx_buf->map;
3656 tx_buf->map = map;
3657
3658 /*
3659 * Last Descriptor of Packet needs End Of Packet (EOP)
3660 */
3661 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
3662
3663 /*
3664 * Defer TDT updating, until enough descrptors are setup
3665 */
3666 *idx = i;
3667 #ifdef IGB_TSS_DEBUG
3668 ++txr->tx_packets;
3669 #endif
3670
3671 return 0;
3672 }
3673
3674 static void
igb_start(struct ifnet * ifp,struct ifaltq_subque * ifsq)3675 igb_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
3676 {
3677 struct igb_softc *sc = ifp->if_softc;
3678 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3679 struct mbuf *m_head;
3680 int idx = -1, nsegs = 0;
3681
3682 KKASSERT(txr->ifsq == ifsq);
3683 ASSERT_SERIALIZED(&txr->tx_serialize);
3684
3685 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifsq_is_oactive(ifsq))
3686 return;
3687
3688 if (!sc->link_active || (txr->tx_flags & IGB_TXFLAG_ENABLED) == 0) {
3689 ifsq_purge(ifsq);
3690 return;
3691 }
3692
3693 while (!ifsq_is_empty(ifsq)) {
3694 if (txr->tx_avail <= IGB_MAX_SCATTER + IGB_TX_RESERVED) {
3695 ifsq_set_oactive(ifsq);
3696 /* Set watchdog on */
3697 ifsq_watchdog_set_count(&txr->tx_watchdog, 5);
3698 break;
3699 }
3700
3701 m_head = ifsq_dequeue(ifsq);
3702 if (m_head == NULL)
3703 break;
3704
3705 if (igb_encap(txr, &m_head, &nsegs, &idx)) {
3706 IFNET_STAT_INC(ifp, oerrors, 1);
3707 continue;
3708 }
3709
3710 /*
3711 * TX interrupt are aggressively aggregated, so increasing
3712 * opackets at TX interrupt time will make the opackets
3713 * statistics vastly inaccurate; we do the opackets increment
3714 * now.
3715 */
3716 IFNET_STAT_INC(ifp, opackets, 1);
3717
3718 if (nsegs >= txr->wreg_nsegs) {
3719 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3720 idx = -1;
3721 nsegs = 0;
3722 }
3723
3724 /* Send a copy of the frame to the BPF listener */
3725 ETHER_BPF_MTAP(ifp, m_head);
3726 }
3727 if (idx >= 0)
3728 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), idx);
3729 txr->tx_running = IGB_TX_RUNNING;
3730 }
3731
3732 static void
igb_watchdog(struct ifaltq_subque * ifsq)3733 igb_watchdog(struct ifaltq_subque *ifsq)
3734 {
3735 struct igb_tx_ring *txr = ifsq_get_priv(ifsq);
3736 struct ifnet *ifp = ifsq_get_ifp(ifsq);
3737 struct igb_softc *sc = ifp->if_softc;
3738 int i;
3739
3740 KKASSERT(txr->ifsq == ifsq);
3741 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3742
3743 /*
3744 * If flow control has paused us since last checking
3745 * it invalidates the watchdog timing, so dont run it.
3746 */
3747 if (sc->pause_frames) {
3748 sc->pause_frames = 0;
3749 ifsq_watchdog_set_count(&txr->tx_watchdog, 5);
3750 return;
3751 }
3752
3753 if_printf(ifp, "Watchdog timeout -- resetting\n");
3754 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3755 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3756 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3757 if_printf(ifp, "TX(%d) desc avail = %d, "
3758 "Next TX to Clean = %d\n",
3759 txr->me, txr->tx_avail, txr->next_to_clean);
3760
3761 IFNET_STAT_INC(ifp, oerrors, 1);
3762 sc->watchdog_events++;
3763
3764 igb_init(sc);
3765 for (i = 0; i < sc->tx_ring_inuse; ++i)
3766 ifsq_devstart_sched(sc->tx_rings[i].ifsq);
3767 }
3768
3769 static void
igb_set_eitr(struct igb_softc * sc,int idx,int rate)3770 igb_set_eitr(struct igb_softc *sc, int idx, int rate)
3771 {
3772 uint32_t eitr = 0;
3773
3774 if (rate > 0) {
3775 if (sc->hw.mac.type == e1000_82575) {
3776 eitr = 1000000000 / 256 / rate;
3777 /*
3778 * NOTE:
3779 * Document is wrong on the 2 bits left shift
3780 */
3781 } else {
3782 eitr = 1000000 / rate;
3783 eitr <<= IGB_EITR_INTVL_SHIFT;
3784 }
3785
3786 if (eitr == 0) {
3787 /* Don't disable it */
3788 eitr = 1 << IGB_EITR_INTVL_SHIFT;
3789 } else if (eitr > IGB_EITR_INTVL_MASK) {
3790 /* Don't allow it to be too large */
3791 eitr = IGB_EITR_INTVL_MASK;
3792 }
3793 }
3794 if (sc->hw.mac.type == e1000_82575)
3795 eitr |= eitr << 16;
3796 else
3797 eitr |= E1000_EITR_CNT_IGNR;
3798 E1000_WRITE_REG(&sc->hw, E1000_EITR(idx), eitr);
3799 }
3800
3801 static void
igb_add_intr_rate_sysctl(struct igb_softc * sc,int use,const char * name,const char * desc)3802 igb_add_intr_rate_sysctl(struct igb_softc *sc, int use,
3803 const char *name, const char *desc)
3804 {
3805 int i;
3806
3807 for (i = 0; i < sc->intr_cnt; ++i) {
3808 if (sc->intr_data[i].intr_use == use) {
3809 SYSCTL_ADD_PROC(device_get_sysctl_ctx(sc->dev),
3810 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
3811 OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW,
3812 sc, use, igb_sysctl_intr_rate, "I", desc);
3813 break;
3814 }
3815 }
3816 }
3817
3818 static int
igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)3819 igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3820 {
3821 struct igb_softc *sc = (void *)arg1;
3822 int use = arg2;
3823 struct ifnet *ifp = &sc->arpcom.ac_if;
3824 int error, rate, i;
3825 struct igb_intr_data *intr;
3826
3827 rate = 0;
3828 for (i = 0; i < sc->intr_cnt; ++i) {
3829 intr = &sc->intr_data[i];
3830 if (intr->intr_use == use) {
3831 rate = intr->intr_rate;
3832 break;
3833 }
3834 }
3835
3836 error = sysctl_handle_int(oidp, &rate, 0, req);
3837 if (error || req->newptr == NULL)
3838 return error;
3839 if (rate <= 0)
3840 return EINVAL;
3841
3842 ifnet_serialize_all(ifp);
3843
3844 for (i = 0; i < sc->intr_cnt; ++i) {
3845 intr = &sc->intr_data[i];
3846 if (intr->intr_use == use && intr->intr_rate != rate) {
3847 intr->intr_rate = rate;
3848 if (ifp->if_flags & IFF_RUNNING)
3849 igb_set_eitr(sc, i, rate);
3850 }
3851 }
3852
3853 ifnet_deserialize_all(ifp);
3854
3855 return error;
3856 }
3857
3858 static int
igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)3859 igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3860 {
3861 struct igb_softc *sc = (void *)arg1;
3862 struct ifnet *ifp = &sc->arpcom.ac_if;
3863 struct igb_tx_ring *txr = &sc->tx_rings[0];
3864 int error, nsegs;
3865
3866 nsegs = txr->intr_nsegs;
3867 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3868 if (error || req->newptr == NULL)
3869 return error;
3870 if (nsegs <= 0)
3871 return EINVAL;
3872
3873 ifnet_serialize_all(ifp);
3874
3875 if (nsegs >= txr->num_tx_desc - IGB_MAX_SCATTER - IGB_TX_RESERVED) {
3876 error = EINVAL;
3877 } else {
3878 int i;
3879
3880 error = 0;
3881 for (i = 0; i < sc->tx_ring_cnt; ++i)
3882 sc->tx_rings[i].intr_nsegs = nsegs;
3883 }
3884
3885 ifnet_deserialize_all(ifp);
3886
3887 return error;
3888 }
3889
3890 static int
igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS)3891 igb_sysctl_rx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3892 {
3893 struct igb_softc *sc = (void *)arg1;
3894 struct ifnet *ifp = &sc->arpcom.ac_if;
3895 int error, nsegs, i;
3896
3897 nsegs = sc->rx_rings[0].wreg_nsegs;
3898 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3899 if (error || req->newptr == NULL)
3900 return error;
3901
3902 ifnet_serialize_all(ifp);
3903 for (i = 0; i < sc->rx_ring_cnt; ++i)
3904 sc->rx_rings[i].wreg_nsegs = nsegs;
3905 ifnet_deserialize_all(ifp);
3906
3907 return 0;
3908 }
3909
3910 static int
igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS)3911 igb_sysctl_tx_wreg_nsegs(SYSCTL_HANDLER_ARGS)
3912 {
3913 struct igb_softc *sc = (void *)arg1;
3914 struct ifnet *ifp = &sc->arpcom.ac_if;
3915 int error, nsegs, i;
3916
3917 nsegs = sc->tx_rings[0].wreg_nsegs;
3918 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3919 if (error || req->newptr == NULL)
3920 return error;
3921
3922 ifnet_serialize_all(ifp);
3923 for (i = 0; i < sc->tx_ring_cnt; ++i)
3924 sc->tx_rings[i].wreg_nsegs = nsegs;
3925 ifnet_deserialize_all(ifp);
3926
3927 return 0;
3928 }
3929
3930 static void
igb_init_intr(struct igb_softc * sc)3931 igb_init_intr(struct igb_softc *sc)
3932 {
3933 int i;
3934
3935 igb_set_intr_mask(sc);
3936
3937 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0)
3938 igb_init_unshared_intr(sc);
3939
3940 for (i = 0; i < sc->intr_cnt; ++i)
3941 igb_set_eitr(sc, i, sc->intr_data[i].intr_rate);
3942 }
3943
3944 static void
igb_init_unshared_intr(struct igb_softc * sc)3945 igb_init_unshared_intr(struct igb_softc *sc)
3946 {
3947 struct e1000_hw *hw = &sc->hw;
3948 const struct igb_rx_ring *rxr;
3949 const struct igb_tx_ring *txr;
3950 uint32_t ivar, index;
3951 int i;
3952
3953 /*
3954 * Enable extended mode
3955 */
3956 if (sc->hw.mac.type != e1000_82575) {
3957 uint32_t gpie;
3958 int ivar_max;
3959
3960 gpie = E1000_GPIE_NSICR;
3961 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3962 gpie |= E1000_GPIE_MSIX_MODE |
3963 E1000_GPIE_EIAME |
3964 E1000_GPIE_PBA;
3965 }
3966 E1000_WRITE_REG(hw, E1000_GPIE, gpie);
3967
3968 /*
3969 * Clear IVARs
3970 */
3971 switch (sc->hw.mac.type) {
3972 case e1000_82576:
3973 ivar_max = IGB_MAX_IVAR_82576;
3974 break;
3975
3976 case e1000_82580:
3977 ivar_max = IGB_MAX_IVAR_82580;
3978 break;
3979
3980 case e1000_i350:
3981 ivar_max = IGB_MAX_IVAR_I350;
3982 break;
3983
3984 case e1000_i354:
3985 ivar_max = IGB_MAX_IVAR_I354;
3986 break;
3987
3988 case e1000_vfadapt:
3989 case e1000_vfadapt_i350:
3990 ivar_max = IGB_MAX_IVAR_VF;
3991 break;
3992
3993 case e1000_i210:
3994 ivar_max = IGB_MAX_IVAR_I210;
3995 break;
3996
3997 case e1000_i211:
3998 ivar_max = IGB_MAX_IVAR_I211;
3999 break;
4000
4001 default:
4002 panic("unknown mac type %d\n", sc->hw.mac.type);
4003 }
4004 for (i = 0; i < ivar_max; ++i)
4005 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, i, 0);
4006 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
4007 } else {
4008 uint32_t tmp;
4009
4010 KASSERT(sc->intr_type != PCI_INTR_TYPE_MSIX,
4011 ("82575 w/ MSI-X"));
4012 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
4013 tmp |= E1000_CTRL_EXT_IRCA;
4014 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
4015 }
4016
4017 /*
4018 * Map TX/RX interrupts to EICR
4019 */
4020 switch (sc->hw.mac.type) {
4021 case e1000_82580:
4022 case e1000_i350:
4023 case e1000_i354:
4024 case e1000_vfadapt:
4025 case e1000_vfadapt_i350:
4026 case e1000_i210:
4027 case e1000_i211:
4028 /* RX entries */
4029 for (i = 0; i < sc->rx_ring_inuse; ++i) {
4030 rxr = &sc->rx_rings[i];
4031
4032 index = i >> 1;
4033 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
4034
4035 if (i & 1) {
4036 ivar &= 0xff00ffff;
4037 ivar |=
4038 (rxr->rx_intr_vec | E1000_IVAR_VALID) << 16;
4039 } else {
4040 ivar &= 0xffffff00;
4041 ivar |=
4042 (rxr->rx_intr_vec | E1000_IVAR_VALID);
4043 }
4044 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
4045 }
4046 /* TX entries */
4047 for (i = 0; i < sc->tx_ring_inuse; ++i) {
4048 txr = &sc->tx_rings[i];
4049
4050 index = i >> 1;
4051 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
4052
4053 if (i & 1) {
4054 ivar &= 0x00ffffff;
4055 ivar |=
4056 (txr->tx_intr_vec | E1000_IVAR_VALID) << 24;
4057 } else {
4058 ivar &= 0xffff00ff;
4059 ivar |=
4060 (txr->tx_intr_vec | E1000_IVAR_VALID) << 8;
4061 }
4062 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
4063 }
4064 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
4065 ivar = (sc->sts_msix_vec | E1000_IVAR_VALID) << 8;
4066 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
4067 }
4068 break;
4069
4070 case e1000_82576:
4071 /* RX entries */
4072 for (i = 0; i < sc->rx_ring_inuse; ++i) {
4073 rxr = &sc->rx_rings[i];
4074
4075 index = i & 0x7; /* Each IVAR has two entries */
4076 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
4077
4078 if (i < 8) {
4079 ivar &= 0xffffff00;
4080 ivar |=
4081 (rxr->rx_intr_vec | E1000_IVAR_VALID);
4082 } else {
4083 ivar &= 0xff00ffff;
4084 ivar |=
4085 (rxr->rx_intr_vec | E1000_IVAR_VALID) << 16;
4086 }
4087 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
4088 }
4089 /* TX entries */
4090 for (i = 0; i < sc->tx_ring_inuse; ++i) {
4091 txr = &sc->tx_rings[i];
4092
4093 index = i & 0x7; /* Each IVAR has two entries */
4094 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
4095
4096 if (i < 8) {
4097 ivar &= 0xffff00ff;
4098 ivar |=
4099 (txr->tx_intr_vec | E1000_IVAR_VALID) << 8;
4100 } else {
4101 ivar &= 0x00ffffff;
4102 ivar |=
4103 (txr->tx_intr_vec | E1000_IVAR_VALID) << 24;
4104 }
4105 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
4106 }
4107 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
4108 ivar = (sc->sts_msix_vec | E1000_IVAR_VALID) << 8;
4109 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
4110 }
4111 break;
4112
4113 case e1000_82575:
4114 /*
4115 * Enable necessary interrupt bits.
4116 *
4117 * The name of the register is confusing; in addition to
4118 * configuring the first vector of MSI-X, it also configures
4119 * which bits of EICR could be set by the hardware even when
4120 * MSI or line interrupt is used; it thus controls interrupt
4121 * generation. It MUST be configured explicitly; the default
4122 * value mentioned in the datasheet is wrong: RX queue0 and
4123 * TX queue0 are NOT enabled by default.
4124 */
4125 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
4126 break;
4127
4128 default:
4129 panic("unknown mac type %d\n", sc->hw.mac.type);
4130 }
4131 }
4132
4133 static int
igb_setup_intr(struct igb_softc * sc)4134 igb_setup_intr(struct igb_softc *sc)
4135 {
4136 int i;
4137
4138 for (i = 0; i < sc->intr_cnt; ++i) {
4139 struct igb_intr_data *intr = &sc->intr_data[i];
4140 int error;
4141
4142 error = bus_setup_intr_descr(sc->dev, intr->intr_res,
4143 INTR_MPSAFE, intr->intr_func, intr->intr_funcarg,
4144 &intr->intr_hand, intr->intr_serialize, intr->intr_desc);
4145 if (error) {
4146 device_printf(sc->dev, "can't setup %dth intr\n", i);
4147 igb_teardown_intr(sc, i);
4148 return error;
4149 }
4150 }
4151 return 0;
4152 }
4153
4154 static void
igb_set_txintr_mask(struct igb_tx_ring * txr,int * intr_vec0,int intr_vecmax)4155 igb_set_txintr_mask(struct igb_tx_ring *txr, int *intr_vec0, int intr_vecmax)
4156 {
4157 if (txr->sc->hw.mac.type == e1000_82575) {
4158 txr->tx_intr_vec = 0; /* unused */
4159 switch (txr->me) {
4160 case 0:
4161 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
4162 break;
4163 case 1:
4164 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
4165 break;
4166 case 2:
4167 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
4168 break;
4169 case 3:
4170 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
4171 break;
4172 default:
4173 panic("unsupported # of TX ring, %d\n", txr->me);
4174 }
4175 } else {
4176 int intr_vec = *intr_vec0;
4177
4178 txr->tx_intr_vec = intr_vec % intr_vecmax;
4179 txr->tx_intr_mask = 1 << txr->tx_intr_vec;
4180
4181 *intr_vec0 = intr_vec + 1;
4182 }
4183 }
4184
4185 static void
igb_set_rxintr_mask(struct igb_rx_ring * rxr,int * intr_vec0,int intr_vecmax)4186 igb_set_rxintr_mask(struct igb_rx_ring *rxr, int *intr_vec0, int intr_vecmax)
4187 {
4188 if (rxr->sc->hw.mac.type == e1000_82575) {
4189 rxr->rx_intr_vec = 0; /* unused */
4190 switch (rxr->me) {
4191 case 0:
4192 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
4193 break;
4194 case 1:
4195 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
4196 break;
4197 case 2:
4198 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
4199 break;
4200 case 3:
4201 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
4202 break;
4203 default:
4204 panic("unsupported # of RX ring, %d\n", rxr->me);
4205 }
4206 } else {
4207 int intr_vec = *intr_vec0;
4208
4209 rxr->rx_intr_vec = intr_vec % intr_vecmax;
4210 rxr->rx_intr_mask = 1 << rxr->rx_intr_vec;
4211
4212 *intr_vec0 = intr_vec + 1;
4213 }
4214 }
4215
4216 static void
igb_serialize(struct ifnet * ifp,enum ifnet_serialize slz)4217 igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
4218 {
4219 struct igb_softc *sc = ifp->if_softc;
4220
4221 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt, slz);
4222 }
4223
4224 static void
igb_deserialize(struct ifnet * ifp,enum ifnet_serialize slz)4225 igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
4226 {
4227 struct igb_softc *sc = ifp->if_softc;
4228
4229 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt, slz);
4230 }
4231
4232 static int
igb_tryserialize(struct ifnet * ifp,enum ifnet_serialize slz)4233 igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
4234 {
4235 struct igb_softc *sc = ifp->if_softc;
4236
4237 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
4238 slz);
4239 }
4240
4241 #ifdef INVARIANTS
4242
4243 static void
igb_serialize_assert(struct ifnet * ifp,enum ifnet_serialize slz,boolean_t serialized)4244 igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
4245 boolean_t serialized)
4246 {
4247 struct igb_softc *sc = ifp->if_softc;
4248
4249 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
4250 slz, serialized);
4251 }
4252
4253 #endif /* INVARIANTS */
4254
4255 static void
igb_set_intr_mask(struct igb_softc * sc)4256 igb_set_intr_mask(struct igb_softc *sc)
4257 {
4258 int i;
4259
4260 sc->intr_mask = sc->sts_intr_mask;
4261 for (i = 0; i < sc->rx_ring_inuse; ++i)
4262 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
4263 for (i = 0; i < sc->tx_ring_inuse; ++i)
4264 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
4265 if (bootverbose) {
4266 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",
4267 sc->intr_mask);
4268 }
4269 }
4270
4271 static int
igb_alloc_intr(struct igb_softc * sc)4272 igb_alloc_intr(struct igb_softc *sc)
4273 {
4274 struct igb_tx_ring *txr;
4275 struct igb_intr_data *intr;
4276 int i, intr_vec, intr_vecmax;
4277 u_int intr_flags;
4278
4279 igb_alloc_msix(sc);
4280 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
4281 igb_set_ring_inuse(sc, FALSE);
4282 goto done;
4283 }
4284
4285 /*
4286 * Reset some settings changed by igb_alloc_msix().
4287 */
4288 if (sc->rx_rmap_intr != NULL) {
4289 if_ringmap_free(sc->rx_rmap_intr);
4290 sc->rx_rmap_intr = NULL;
4291 }
4292 if (sc->tx_rmap_intr != NULL) {
4293 if_ringmap_free(sc->tx_rmap_intr);
4294 sc->tx_rmap_intr = NULL;
4295 }
4296 if (sc->intr_data != NULL) {
4297 kfree(sc->intr_data, M_DEVBUF);
4298 sc->intr_data = NULL;
4299 }
4300 for (i = 0; i < sc->tx_ring_cnt; ++i) {
4301 txr = &sc->tx_rings[i];
4302 txr->tx_intr_vec = 0;
4303 txr->tx_intr_mask = 0;
4304 txr->tx_intr_cpuid = -1;
4305 }
4306 for (i = 0; i < sc->rx_ring_cnt; ++i) {
4307 struct igb_rx_ring *rxr = &sc->rx_rings[i];
4308
4309 rxr->rx_intr_vec = 0;
4310 rxr->rx_intr_mask = 0;
4311 rxr->rx_txr = NULL;
4312 }
4313
4314 sc->intr_cnt = 1;
4315 sc->intr_data = kmalloc(sizeof(struct igb_intr_data), M_DEVBUF,
4316 M_WAITOK | M_ZERO);
4317 intr = &sc->intr_data[0];
4318
4319 /*
4320 * Allocate MSI/legacy interrupt resource
4321 */
4322 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
4323 &intr->intr_rid, &intr_flags);
4324
4325 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
4326 int unshared;
4327
4328 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
4329 if (!unshared) {
4330 sc->flags |= IGB_FLAG_SHARED_INTR;
4331 if (bootverbose)
4332 device_printf(sc->dev, "IRQ shared\n");
4333 } else {
4334 intr_flags &= ~RF_SHAREABLE;
4335 if (bootverbose)
4336 device_printf(sc->dev, "IRQ unshared\n");
4337 }
4338 }
4339
4340 intr->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4341 &intr->intr_rid, intr_flags);
4342 if (intr->intr_res == NULL) {
4343 device_printf(sc->dev, "Unable to allocate bus resource: "
4344 "interrupt\n");
4345 return ENXIO;
4346 }
4347
4348 intr->intr_serialize = &sc->main_serialize;
4349 intr->intr_cpuid = rman_get_cpuid(intr->intr_res);
4350 intr->intr_func = (sc->flags & IGB_FLAG_SHARED_INTR) ?
4351 igb_intr_shared : igb_intr;
4352 intr->intr_funcarg = sc;
4353 intr->intr_rate = IGB_INTR_RATE;
4354 intr->intr_use = IGB_INTR_USE_RXTX;
4355
4356 sc->tx_rings[0].tx_intr_cpuid = intr->intr_cpuid;
4357
4358 /*
4359 * Setup MSI/legacy interrupt mask
4360 */
4361 switch (sc->hw.mac.type) {
4362 case e1000_82575:
4363 intr_vecmax = IGB_MAX_TXRXINT_82575;
4364 break;
4365
4366 case e1000_82576:
4367 intr_vecmax = IGB_MAX_TXRXINT_82576;
4368 break;
4369
4370 case e1000_82580:
4371 intr_vecmax = IGB_MAX_TXRXINT_82580;
4372 break;
4373
4374 case e1000_i350:
4375 intr_vecmax = IGB_MAX_TXRXINT_I350;
4376 break;
4377
4378 case e1000_i354:
4379 intr_vecmax = IGB_MAX_TXRXINT_I354;
4380 break;
4381
4382 case e1000_i210:
4383 intr_vecmax = IGB_MAX_TXRXINT_I210;
4384 break;
4385
4386 case e1000_i211:
4387 intr_vecmax = IGB_MAX_TXRXINT_I211;
4388 break;
4389
4390 default:
4391 intr_vecmax = IGB_MIN_TXRXINT;
4392 break;
4393 }
4394 intr_vec = 0;
4395 for (i = 0; i < sc->tx_ring_cnt; ++i)
4396 igb_set_txintr_mask(&sc->tx_rings[i], &intr_vec, intr_vecmax);
4397 for (i = 0; i < sc->rx_ring_cnt; ++i)
4398 igb_set_rxintr_mask(&sc->rx_rings[i], &intr_vec, intr_vecmax);
4399 sc->sts_intr_mask = E1000_EICR_OTHER;
4400
4401 igb_set_ring_inuse(sc, FALSE);
4402 KKASSERT(sc->rx_ring_inuse <= IGB_MIN_RING_RSS);
4403 if (sc->rx_ring_inuse == IGB_MIN_RING_RSS) {
4404 /*
4405 * Allocate RX ring map for RSS setup.
4406 */
4407 sc->rx_rmap_intr = if_ringmap_alloc(sc->dev,
4408 IGB_MIN_RING_RSS, IGB_MIN_RING_RSS);
4409 KASSERT(if_ringmap_count(sc->rx_rmap_intr) ==
4410 sc->rx_ring_inuse, ("RX ring inuse mismatch"));
4411 }
4412 done:
4413 igb_set_intr_mask(sc);
4414 for (i = 0; i < sc->tx_ring_cnt; ++i) {
4415 txr = &sc->tx_rings[i];
4416 if (txr->tx_intr_cpuid < 0)
4417 txr->tx_intr_cpuid = 0;
4418 }
4419 return 0;
4420 }
4421
4422 static void
igb_free_intr(struct igb_softc * sc)4423 igb_free_intr(struct igb_softc *sc)
4424 {
4425 if (sc->intr_data == NULL)
4426 return;
4427
4428 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
4429 struct igb_intr_data *intr = &sc->intr_data[0];
4430
4431 KKASSERT(sc->intr_cnt == 1);
4432 if (intr->intr_res != NULL) {
4433 bus_release_resource(sc->dev, SYS_RES_IRQ,
4434 intr->intr_rid, intr->intr_res);
4435 }
4436 if (sc->intr_type == PCI_INTR_TYPE_MSI)
4437 pci_release_msi(sc->dev);
4438
4439 kfree(sc->intr_data, M_DEVBUF);
4440 } else {
4441 igb_free_msix(sc, TRUE);
4442 }
4443 }
4444
4445 static void
igb_teardown_intr(struct igb_softc * sc,int intr_cnt)4446 igb_teardown_intr(struct igb_softc *sc, int intr_cnt)
4447 {
4448 int i;
4449
4450 if (sc->intr_data == NULL)
4451 return;
4452
4453 for (i = 0; i < intr_cnt; ++i) {
4454 struct igb_intr_data *intr = &sc->intr_data[i];
4455
4456 bus_teardown_intr(sc->dev, intr->intr_res, intr->intr_hand);
4457 }
4458 }
4459
4460 static void
igb_alloc_msix(struct igb_softc * sc)4461 igb_alloc_msix(struct igb_softc *sc)
4462 {
4463 int msix_enable, msix_cnt, msix_ring, alloc_cnt;
4464 int i, x, error;
4465 int ring_cnt, ring_cntmax;
4466 struct igb_intr_data *intr;
4467 boolean_t setup = FALSE;
4468
4469 /*
4470 * Don't enable MSI-X on 82575, see:
4471 * 82575 specification update errata #25
4472 */
4473 if (sc->hw.mac.type == e1000_82575)
4474 return;
4475
4476 /* Don't enable MSI-X on VF */
4477 if (sc->vf_ifp)
4478 return;
4479
4480 msix_enable = device_getenv_int(sc->dev, "msix.enable",
4481 igb_msix_enable);
4482 if (!msix_enable)
4483 return;
4484
4485 msix_cnt = pci_msix_count(sc->dev);
4486 #ifdef IGB_MSIX_DEBUG
4487 msix_cnt = device_getenv_int(sc->dev, "msix.count", msix_cnt);
4488 #endif
4489 if (msix_cnt <= 1) {
4490 /* One MSI-X model does not make sense. */
4491 return;
4492 }
4493 if (bootverbose)
4494 device_printf(sc->dev, "MSI-X count %d\n", msix_cnt);
4495 msix_ring = msix_cnt - 1; /* -1 for status */
4496
4497 /*
4498 * Configure # of RX/TX rings usable by MSI-X.
4499 */
4500 igb_get_rxring_cnt(sc, &ring_cnt, &ring_cntmax);
4501 if (ring_cntmax > msix_ring)
4502 ring_cntmax = msix_ring;
4503 sc->rx_rmap_intr = if_ringmap_alloc(sc->dev, ring_cnt, ring_cntmax);
4504
4505 igb_get_txring_cnt(sc, &ring_cnt, &ring_cntmax);
4506 if (ring_cntmax > msix_ring)
4507 ring_cntmax = msix_ring;
4508 sc->tx_rmap_intr = if_ringmap_alloc(sc->dev, ring_cnt, ring_cntmax);
4509
4510 if_ringmap_match(sc->dev, sc->rx_rmap_intr, sc->tx_rmap_intr);
4511 sc->rx_ring_msix = if_ringmap_count(sc->rx_rmap_intr);
4512 KASSERT(sc->rx_ring_msix <= sc->rx_ring_cnt,
4513 ("total RX ring count %d, MSI-X RX ring count %d",
4514 sc->rx_ring_cnt, sc->rx_ring_msix));
4515 sc->tx_ring_msix = if_ringmap_count(sc->tx_rmap_intr);
4516 KASSERT(sc->tx_ring_msix <= sc->tx_ring_cnt,
4517 ("total TX ring count %d, MSI-X TX ring count %d",
4518 sc->tx_ring_cnt, sc->tx_ring_msix));
4519
4520 /*
4521 * Aggregate TX/RX MSI-X
4522 */
4523 ring_cntmax = sc->rx_ring_msix;
4524 if (ring_cntmax < sc->tx_ring_msix)
4525 ring_cntmax = sc->tx_ring_msix;
4526 KASSERT(ring_cntmax <= msix_ring,
4527 ("invalid ring count max %d, MSI-X count for rings %d",
4528 ring_cntmax, msix_ring));
4529
4530 alloc_cnt = ring_cntmax + 1; /* +1 for status */
4531 if (bootverbose) {
4532 device_printf(sc->dev, "MSI-X alloc %d, "
4533 "RX ring %d, TX ring %d\n", alloc_cnt,
4534 sc->rx_ring_msix, sc->tx_ring_msix);
4535 }
4536
4537 sc->msix_mem_rid = PCIR_BAR(IGB_MSIX_BAR);
4538 sc->msix_mem_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
4539 &sc->msix_mem_rid, RF_ACTIVE);
4540 if (sc->msix_mem_res == NULL) {
4541 sc->msix_mem_rid = PCIR_BAR(IGB_MSIX_BAR_ALT);
4542 sc->msix_mem_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
4543 &sc->msix_mem_rid, RF_ACTIVE);
4544 if (sc->msix_mem_res == NULL) {
4545 device_printf(sc->dev, "Unable to map MSI-X table\n");
4546 return;
4547 }
4548 }
4549
4550 sc->intr_cnt = alloc_cnt;
4551 sc->intr_data = kmalloc(sizeof(struct igb_intr_data) * sc->intr_cnt,
4552 M_DEVBUF, M_WAITOK | M_ZERO);
4553 for (x = 0; x < sc->intr_cnt; ++x) {
4554 intr = &sc->intr_data[x];
4555 intr->intr_rid = -1;
4556 intr->intr_rate = IGB_INTR_RATE;
4557 }
4558
4559 x = 0;
4560 for (i = 0; i < sc->rx_ring_msix; ++i) {
4561 struct igb_rx_ring *rxr = &sc->rx_rings[i];
4562 struct igb_tx_ring *txr = NULL;
4563 int cpuid, j;
4564
4565 KKASSERT(x < sc->intr_cnt);
4566 rxr->rx_intr_vec = x;
4567 rxr->rx_intr_mask = 1 << rxr->rx_intr_vec;
4568
4569 cpuid = if_ringmap_cpumap(sc->rx_rmap_intr, i);
4570
4571 /*
4572 * Try finding TX ring to piggyback.
4573 */
4574 for (j = 0; j < sc->tx_ring_msix; ++j) {
4575 if (cpuid ==
4576 if_ringmap_cpumap(sc->tx_rmap_intr, j)) {
4577 txr = &sc->tx_rings[j];
4578 KKASSERT(txr->tx_intr_cpuid < 0);
4579 break;
4580 }
4581 }
4582 rxr->rx_txr = txr;
4583
4584 intr = &sc->intr_data[x++];
4585 intr->intr_serialize = &rxr->rx_serialize;
4586 intr->intr_cpuid = cpuid;
4587 KKASSERT(intr->intr_cpuid < netisr_ncpus);
4588 intr->intr_funcarg = rxr;
4589 if (txr != NULL) {
4590 intr->intr_func = igb_msix_rxtx;
4591 intr->intr_use = IGB_INTR_USE_RXTX;
4592 ksnprintf(intr->intr_desc0, sizeof(intr->intr_desc0),
4593 "%s rx%dtx%d", device_get_nameunit(sc->dev),
4594 i, txr->me);
4595
4596 txr->tx_intr_vec = rxr->rx_intr_vec;
4597 txr->tx_intr_mask = rxr->rx_intr_mask;
4598 txr->tx_intr_cpuid = intr->intr_cpuid;
4599 } else {
4600 intr->intr_func = igb_msix_rx;
4601 intr->intr_rate = IGB_MSIX_RX_RATE;
4602 intr->intr_use = IGB_INTR_USE_RX;
4603
4604 ksnprintf(intr->intr_desc0, sizeof(intr->intr_desc0),
4605 "%s rx%d", device_get_nameunit(sc->dev), i);
4606 }
4607 intr->intr_desc = intr->intr_desc0;
4608 }
4609
4610 for (i = 0; i < sc->tx_ring_msix; ++i) {
4611 struct igb_tx_ring *txr = &sc->tx_rings[i];
4612
4613 if (txr->tx_intr_cpuid >= 0) {
4614 /* Piggybacked by RX ring. */
4615 continue;
4616 }
4617
4618 KKASSERT(x < sc->intr_cnt);
4619 txr->tx_intr_vec = x;
4620 txr->tx_intr_mask = 1 << txr->tx_intr_vec;
4621
4622 intr = &sc->intr_data[x++];
4623 intr->intr_serialize = &txr->tx_serialize;
4624 intr->intr_func = igb_msix_tx;
4625 intr->intr_funcarg = txr;
4626 intr->intr_rate = IGB_MSIX_TX_RATE;
4627 intr->intr_use = IGB_INTR_USE_TX;
4628
4629 intr->intr_cpuid = if_ringmap_cpumap(sc->tx_rmap_intr, i);
4630 KKASSERT(intr->intr_cpuid < netisr_ncpus);
4631 txr->tx_intr_cpuid = intr->intr_cpuid;
4632
4633 ksnprintf(intr->intr_desc0, sizeof(intr->intr_desc0), "%s tx%d",
4634 device_get_nameunit(sc->dev), i);
4635 intr->intr_desc = intr->intr_desc0;
4636 }
4637
4638 /*
4639 * Link status
4640 */
4641 KKASSERT(x < sc->intr_cnt);
4642 sc->sts_msix_vec = x;
4643 sc->sts_intr_mask = 1 << sc->sts_msix_vec;
4644
4645 intr = &sc->intr_data[x++];
4646 intr->intr_serialize = &sc->main_serialize;
4647 intr->intr_func = igb_msix_status;
4648 intr->intr_funcarg = sc;
4649 intr->intr_cpuid = 0;
4650 intr->intr_use = IGB_INTR_USE_STATUS;
4651
4652 ksnprintf(intr->intr_desc0, sizeof(intr->intr_desc0), "%s sts",
4653 device_get_nameunit(sc->dev));
4654 intr->intr_desc = intr->intr_desc0;
4655
4656 KKASSERT(x == sc->intr_cnt);
4657
4658 error = pci_setup_msix(sc->dev);
4659 if (error) {
4660 device_printf(sc->dev, "Setup MSI-X failed\n");
4661 goto back;
4662 }
4663 setup = TRUE;
4664
4665 for (i = 0; i < sc->intr_cnt; ++i) {
4666 intr = &sc->intr_data[i];
4667
4668 error = pci_alloc_msix_vector(sc->dev, i, &intr->intr_rid,
4669 intr->intr_cpuid);
4670 if (error) {
4671 device_printf(sc->dev,
4672 "Unable to allocate MSI-X %d on cpu%d\n", i,
4673 intr->intr_cpuid);
4674 goto back;
4675 }
4676
4677 intr->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
4678 &intr->intr_rid, RF_ACTIVE);
4679 if (intr->intr_res == NULL) {
4680 device_printf(sc->dev,
4681 "Unable to allocate MSI-X %d resource\n", i);
4682 error = ENOMEM;
4683 goto back;
4684 }
4685 }
4686
4687 pci_enable_msix(sc->dev);
4688 sc->intr_type = PCI_INTR_TYPE_MSIX;
4689 back:
4690 if (error)
4691 igb_free_msix(sc, setup);
4692 }
4693
4694 static void
igb_free_msix(struct igb_softc * sc,boolean_t setup)4695 igb_free_msix(struct igb_softc *sc, boolean_t setup)
4696 {
4697 int i;
4698
4699 KKASSERT(sc->intr_cnt > 1);
4700
4701 for (i = 0; i < sc->intr_cnt; ++i) {
4702 struct igb_intr_data *intr = &sc->intr_data[i];
4703
4704 if (intr->intr_res != NULL) {
4705 bus_release_resource(sc->dev, SYS_RES_IRQ,
4706 intr->intr_rid, intr->intr_res);
4707 }
4708 if (intr->intr_rid >= 0)
4709 pci_release_msix_vector(sc->dev, intr->intr_rid);
4710 }
4711 if (setup)
4712 pci_teardown_msix(sc->dev);
4713
4714 sc->intr_cnt = 0;
4715 kfree(sc->intr_data, M_DEVBUF);
4716 sc->intr_data = NULL;
4717 }
4718
4719 static void
igb_msix_rx(void * arg)4720 igb_msix_rx(void *arg)
4721 {
4722 struct igb_rx_ring *rxr = arg;
4723
4724 ASSERT_SERIALIZED(&rxr->rx_serialize);
4725 igb_rxeof(rxr, -1);
4726
4727 E1000_WRITE_REG(&rxr->sc->hw, E1000_EIMS, rxr->rx_intr_mask);
4728 }
4729
4730 static void
igb_msix_tx(void * arg)4731 igb_msix_tx(void *arg)
4732 {
4733 struct igb_tx_ring *txr = arg;
4734
4735 ASSERT_SERIALIZED(&txr->tx_serialize);
4736
4737 igb_tx_intr(txr, *(txr->tx_hdr));
4738 E1000_WRITE_REG(&txr->sc->hw, E1000_EIMS, txr->tx_intr_mask);
4739 }
4740
4741 static void
igb_msix_status(void * arg)4742 igb_msix_status(void *arg)
4743 {
4744 struct igb_softc *sc = arg;
4745 uint32_t icr;
4746
4747 ASSERT_SERIALIZED(&sc->main_serialize);
4748
4749 icr = E1000_READ_REG(&sc->hw, E1000_ICR);
4750 if (icr & E1000_ICR_LSC) {
4751 sc->hw.mac.get_link_status = 1;
4752 igb_update_link_status(sc);
4753 }
4754
4755 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->sts_intr_mask);
4756 }
4757
4758 static void
igb_set_ring_inuse(struct igb_softc * sc,boolean_t polling)4759 igb_set_ring_inuse(struct igb_softc *sc, boolean_t polling)
4760 {
4761 sc->rx_ring_inuse = igb_get_rxring_inuse(sc, polling);
4762 sc->tx_ring_inuse = igb_get_txring_inuse(sc, polling);
4763 if (bootverbose) {
4764 if_printf(&sc->arpcom.ac_if, "RX rings %d/%d, TX rings %d/%d\n",
4765 sc->rx_ring_inuse, sc->rx_ring_cnt,
4766 sc->tx_ring_inuse, sc->tx_ring_cnt);
4767 }
4768 }
4769
4770 static int
igb_get_rxring_inuse(const struct igb_softc * sc,boolean_t polling)4771 igb_get_rxring_inuse(const struct igb_softc *sc, boolean_t polling)
4772 {
4773 if (!IGB_ENABLE_HWRSS(sc))
4774 return 1;
4775
4776 if (polling)
4777 return sc->rx_ring_cnt;
4778 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4779 return IGB_MIN_RING_RSS;
4780 else
4781 return sc->rx_ring_msix;
4782 }
4783
4784 static int
igb_get_txring_inuse(const struct igb_softc * sc,boolean_t polling)4785 igb_get_txring_inuse(const struct igb_softc *sc, boolean_t polling)
4786 {
4787 if (!IGB_ENABLE_HWTSS(sc))
4788 return 1;
4789
4790 if (polling)
4791 return sc->tx_ring_cnt;
4792 else if (sc->intr_type != PCI_INTR_TYPE_MSIX)
4793 return IGB_MIN_RING;
4794 else
4795 return sc->tx_ring_msix;
4796 }
4797
4798 static int
igb_tso_pullup(struct igb_tx_ring * txr,struct mbuf ** mp)4799 igb_tso_pullup(struct igb_tx_ring *txr, struct mbuf **mp)
4800 {
4801 int hoff, iphlen, thoff;
4802 struct mbuf *m;
4803
4804 m = *mp;
4805 KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
4806
4807 iphlen = m->m_pkthdr.csum_iphlen;
4808 thoff = m->m_pkthdr.csum_thlen;
4809 hoff = m->m_pkthdr.csum_lhlen;
4810
4811 KASSERT(iphlen > 0, ("invalid ip hlen"));
4812 KASSERT(thoff > 0, ("invalid tcp hlen"));
4813 KASSERT(hoff > 0, ("invalid ether hlen"));
4814
4815 if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
4816 m = m_pullup(m, hoff + iphlen + thoff);
4817 if (m == NULL) {
4818 *mp = NULL;
4819 return ENOBUFS;
4820 }
4821 *mp = m;
4822 }
4823 if (txr->tx_flags & IGB_TXFLAG_TSO_IPLEN0) {
4824 struct ip *ip;
4825
4826 ip = mtodoff(m, struct ip *, hoff);
4827 ip->ip_len = 0;
4828 }
4829
4830 return 0;
4831 }
4832
4833 static void
igb_tso_ctx(struct igb_tx_ring * txr,struct mbuf * m,uint32_t * hlen)4834 igb_tso_ctx(struct igb_tx_ring *txr, struct mbuf *m, uint32_t *hlen)
4835 {
4836 struct e1000_adv_tx_context_desc *TXD;
4837 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
4838 int hoff, ctxd, iphlen, thoff;
4839
4840 iphlen = m->m_pkthdr.csum_iphlen;
4841 thoff = m->m_pkthdr.csum_thlen;
4842 hoff = m->m_pkthdr.csum_lhlen;
4843
4844 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
4845
4846 ctxd = txr->next_avail_desc;
4847 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
4848
4849 if (m->m_flags & M_VLANTAG) {
4850 uint16_t vlantag;
4851
4852 vlantag = htole16(m->m_pkthdr.ether_vlantag);
4853 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
4854 }
4855
4856 vlan_macip_lens |= (hoff << E1000_ADVTXD_MACLEN_SHIFT);
4857 vlan_macip_lens |= iphlen;
4858
4859 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
4860 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
4861 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
4862
4863 mss_l4len_idx |= (m->m_pkthdr.tso_segsz << E1000_ADVTXD_MSS_SHIFT);
4864 mss_l4len_idx |= (thoff << E1000_ADVTXD_L4LEN_SHIFT);
4865
4866 /*
4867 * 82575 needs the TX context index added; the queue
4868 * index is used as TX context index here.
4869 */
4870 if (txr->sc->hw.mac.type == e1000_82575)
4871 mss_l4len_idx |= txr->me << 4;
4872
4873 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
4874 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
4875 TXD->seqnum_seed = htole32(0);
4876 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
4877
4878 /* We've consumed the first desc, adjust counters */
4879 if (++ctxd == txr->num_tx_desc)
4880 ctxd = 0;
4881 txr->next_avail_desc = ctxd;
4882 --txr->tx_avail;
4883
4884 *hlen = hoff + iphlen + thoff;
4885 }
4886
4887 static void
igb_setup_serialize(struct igb_softc * sc)4888 igb_setup_serialize(struct igb_softc *sc)
4889 {
4890 int i = 0, j;
4891
4892 /* Main + RX + TX */
4893 sc->serialize_cnt = 1 + sc->rx_ring_cnt + sc->tx_ring_cnt;
4894 sc->serializes =
4895 kmalloc(sc->serialize_cnt * sizeof(struct lwkt_serialize *),
4896 M_DEVBUF, M_WAITOK | M_ZERO);
4897
4898 /*
4899 * Setup serializes
4900 *
4901 * NOTE: Order is critical
4902 */
4903
4904 KKASSERT(i < sc->serialize_cnt);
4905 sc->serializes[i++] = &sc->main_serialize;
4906
4907 for (j = 0; j < sc->rx_ring_cnt; ++j) {
4908 KKASSERT(i < sc->serialize_cnt);
4909 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
4910 }
4911
4912 for (j = 0; j < sc->tx_ring_cnt; ++j) {
4913 KKASSERT(i < sc->serialize_cnt);
4914 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
4915 }
4916
4917 KKASSERT(i == sc->serialize_cnt);
4918 }
4919
4920 static void
igb_msix_rxtx(void * arg)4921 igb_msix_rxtx(void *arg)
4922 {
4923 struct igb_rx_ring *rxr = arg;
4924 struct igb_tx_ring *txr;
4925 int hdr;
4926
4927 ASSERT_SERIALIZED(&rxr->rx_serialize);
4928
4929 igb_rxeof(rxr, -1);
4930
4931 /*
4932 * NOTE:
4933 * Since next_to_clean is only changed by igb_txeof(),
4934 * which is called only in interrupt handler, the
4935 * check w/o holding tx serializer is MPSAFE.
4936 */
4937 txr = rxr->rx_txr;
4938 hdr = *(txr->tx_hdr);
4939 if (hdr != txr->next_to_clean) {
4940 lwkt_serialize_enter(&txr->tx_serialize);
4941 igb_tx_intr(txr, hdr);
4942 lwkt_serialize_exit(&txr->tx_serialize);
4943 }
4944
4945 E1000_WRITE_REG(&rxr->sc->hw, E1000_EIMS, rxr->rx_intr_mask);
4946 }
4947
4948 static void
igb_set_timer_cpuid(struct igb_softc * sc,boolean_t polling)4949 igb_set_timer_cpuid(struct igb_softc *sc, boolean_t polling)
4950 {
4951 if (polling || sc->intr_type == PCI_INTR_TYPE_MSIX)
4952 sc->timer_cpuid = 0; /* XXX fixed */
4953 else
4954 sc->timer_cpuid = rman_get_cpuid(sc->intr_data[0].intr_res);
4955 }
4956
4957 static void
igb_init_dmac(struct igb_softc * sc,uint32_t pba)4958 igb_init_dmac(struct igb_softc *sc, uint32_t pba)
4959 {
4960 struct e1000_hw *hw = &sc->hw;
4961 uint32_t reg;
4962
4963 if (hw->mac.type == e1000_i211)
4964 return;
4965
4966 if (hw->mac.type > e1000_82580) {
4967 uint32_t dmac;
4968 uint16_t hwm;
4969
4970 if (sc->dma_coalesce == 0) { /* Disabling it */
4971 reg = ~E1000_DMACR_DMAC_EN;
4972 E1000_WRITE_REG(hw, E1000_DMACR, reg);
4973 return;
4974 } else {
4975 if_printf(&sc->arpcom.ac_if,
4976 "DMA Coalescing enabled\n");
4977 }
4978
4979 /* Set starting threshold */
4980 E1000_WRITE_REG(hw, E1000_DMCTXTH, 0);
4981
4982 hwm = 64 * pba - sc->max_frame_size / 16;
4983 if (hwm < 64 * (pba - 6))
4984 hwm = 64 * (pba - 6);
4985 reg = E1000_READ_REG(hw, E1000_FCRTC);
4986 reg &= ~E1000_FCRTC_RTH_COAL_MASK;
4987 reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT)
4988 & E1000_FCRTC_RTH_COAL_MASK);
4989 E1000_WRITE_REG(hw, E1000_FCRTC, reg);
4990
4991 dmac = pba - sc->max_frame_size / 512;
4992 if (dmac < pba - 10)
4993 dmac = pba - 10;
4994 reg = E1000_READ_REG(hw, E1000_DMACR);
4995 reg &= ~E1000_DMACR_DMACTHR_MASK;
4996 reg |= ((dmac << E1000_DMACR_DMACTHR_SHIFT)
4997 & E1000_DMACR_DMACTHR_MASK);
4998
4999 /* transition to L0x or L1 if available..*/
5000 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
5001
5002 /*
5003 * Check if status is 2.5Gb backplane connection
5004 * before configuration of watchdog timer, which
5005 * is in msec values in 12.8usec intervals watchdog
5006 * timer = msec values in 32usec intervals for non
5007 * 2.5Gb connection.
5008 */
5009 if (hw->mac.type == e1000_i354) {
5010 int status = E1000_READ_REG(hw, E1000_STATUS);
5011
5012 if ((status & E1000_STATUS_2P5_SKU) &&
5013 !(status & E1000_STATUS_2P5_SKU_OVER))
5014 reg |= ((sc->dma_coalesce * 5) >> 6);
5015 else
5016 reg |= (sc->dma_coalesce >> 5);
5017 } else {
5018 reg |= (sc->dma_coalesce >> 5);
5019 }
5020
5021 E1000_WRITE_REG(hw, E1000_DMACR, reg);
5022
5023 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
5024
5025 /* Set the interval before transition */
5026 reg = E1000_READ_REG(hw, E1000_DMCTLX);
5027 if (hw->mac.type == e1000_i350)
5028 reg |= IGB_DMCTLX_DCFLUSH_DIS;
5029 /*
5030 * In 2.5Gb connection, TTLX unit is 0.4 usec, which
5031 * is 0x4*2 = 0xA. But delay is still 4 usec.
5032 */
5033 if (hw->mac.type == e1000_i354) {
5034 int status = E1000_READ_REG(hw, E1000_STATUS);
5035
5036 if ((status & E1000_STATUS_2P5_SKU) &&
5037 !(status & E1000_STATUS_2P5_SKU_OVER))
5038 reg |= 0xA;
5039 else
5040 reg |= 0x4;
5041 } else {
5042 reg |= 0x4;
5043 }
5044 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
5045
5046 /* Free space in tx packet buffer to wake from DMA coal */
5047 E1000_WRITE_REG(hw, E1000_DMCTXTH,
5048 (IGB_TXPBSIZE - (2 * sc->max_frame_size)) >> 6);
5049
5050 /* Make low power state decision controlled by DMA coal */
5051 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
5052 reg &= ~E1000_PCIEMISC_LX_DECISION;
5053 E1000_WRITE_REG(hw, E1000_PCIEMISC, reg);
5054 } else if (hw->mac.type == e1000_82580) {
5055 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
5056 E1000_WRITE_REG(hw, E1000_PCIEMISC,
5057 reg & ~E1000_PCIEMISC_LX_DECISION);
5058 E1000_WRITE_REG(hw, E1000_DMACR, 0);
5059 }
5060 }
5061
5062 static void
igb_reg_dump(struct igb_softc * sc)5063 igb_reg_dump(struct igb_softc *sc)
5064 {
5065 device_t dev = sc->dev;
5066 int col = 0;
5067
5068 #define DUMPREG(regno) \
5069 kprintf(" %13s=%08x", #regno + 6, E1000_READ_REG(&sc->hw, regno));\
5070 if (++col == 3) { \
5071 kprintf("\n"); \
5072 col = 0; \
5073 } \
5074
5075 device_printf(dev, "REGISTER DUMP\n");
5076 DUMPREG(E1000_CTRL);
5077 DUMPREG(E1000_STATUS);
5078 DUMPREG(E1000_EECD);
5079 DUMPREG(E1000_EERD);
5080 DUMPREG(E1000_CTRL_EXT);
5081 DUMPREG(E1000_FLA);
5082 DUMPREG(E1000_MDIC);
5083 DUMPREG(E1000_SCTL);
5084 DUMPREG(E1000_FCAL);
5085 DUMPREG(E1000_FCAH);
5086 DUMPREG(E1000_FCT);
5087 DUMPREG(E1000_CONNSW);
5088 DUMPREG(E1000_VET);
5089 DUMPREG(E1000_ICR);
5090 DUMPREG(E1000_ITR);
5091 DUMPREG(E1000_IMS);
5092 DUMPREG(E1000_IVAR);
5093 DUMPREG(E1000_SVCR);
5094 DUMPREG(E1000_SVT);
5095 DUMPREG(E1000_LPIC);
5096 DUMPREG(E1000_RCTL);
5097 DUMPREG(E1000_FCTTV);
5098 DUMPREG(E1000_TXCW);
5099 DUMPREG(E1000_RXCW);
5100 DUMPREG(E1000_EIMS);
5101 DUMPREG(E1000_EIAC);
5102 DUMPREG(E1000_EIAM);
5103 DUMPREG(E1000_GPIE);
5104 DUMPREG(E1000_IVAR0);
5105 DUMPREG(E1000_IVAR_MISC);
5106 DUMPREG(E1000_TCTL);
5107 DUMPREG(E1000_TCTL_EXT);
5108 DUMPREG(E1000_TIPG);
5109 DUMPREG(E1000_TBT);
5110 DUMPREG(E1000_AIT);
5111 DUMPREG(E1000_LEDCTL);
5112 DUMPREG(E1000_EXTCNF_CTRL);
5113 DUMPREG(E1000_EXTCNF_SIZE);
5114 DUMPREG(E1000_PHY_CTRL);
5115 DUMPREG(E1000_PBA);
5116 DUMPREG(E1000_PBS);
5117 DUMPREG(E1000_PBECCSTS);
5118 DUMPREG(E1000_EEMNGCTL);
5119 DUMPREG(E1000_EEARBC);
5120 DUMPREG(E1000_FLASHT);
5121 DUMPREG(E1000_EEARBC_I210);
5122 DUMPREG(E1000_EEWR);
5123 DUMPREG(E1000_FLSWCTL);
5124 DUMPREG(E1000_FLSWDATA);
5125 DUMPREG(E1000_FLSWCNT);
5126 DUMPREG(E1000_FLOP);
5127 DUMPREG(E1000_I2CCMD);
5128 DUMPREG(E1000_I2CPARAMS);
5129 DUMPREG(E1000_WDSTP);
5130 DUMPREG(E1000_SWDSTS);
5131 DUMPREG(E1000_FRTIMER);
5132 DUMPREG(E1000_TCPTIMER);
5133 DUMPREG(E1000_VPDDIAG);
5134 DUMPREG(E1000_IMS_V2);
5135 DUMPREG(E1000_IAM_V2);
5136 DUMPREG(E1000_ERT);
5137 DUMPREG(E1000_FCRTL);
5138 DUMPREG(E1000_FCRTH);
5139 DUMPREG(E1000_PSRCTL);
5140 DUMPREG(E1000_RDFH);
5141 DUMPREG(E1000_RDFT);
5142 DUMPREG(E1000_RDFHS);
5143 DUMPREG(E1000_RDFTS);
5144 DUMPREG(E1000_RDFPC);
5145 DUMPREG(E1000_PBRTH);
5146 DUMPREG(E1000_FCRTV);
5147 DUMPREG(E1000_RDPUMB);
5148 DUMPREG(E1000_RDPUAD);
5149 DUMPREG(E1000_RDPUWD);
5150 DUMPREG(E1000_RDPURD);
5151 DUMPREG(E1000_RDPUCTL);
5152 DUMPREG(E1000_PBDIAG);
5153 DUMPREG(E1000_RXPBS);
5154 DUMPREG(E1000_IRPBS);
5155 DUMPREG(E1000_PBRWAC);
5156 DUMPREG(E1000_RDTR);
5157 DUMPREG(E1000_RADV);
5158 DUMPREG(E1000_SRWR);
5159 DUMPREG(E1000_I210_FLMNGCTL);
5160 DUMPREG(E1000_I210_FLMNGDATA);
5161 DUMPREG(E1000_I210_FLMNGCNT);
5162 DUMPREG(E1000_I210_FLSWCTL);
5163 DUMPREG(E1000_I210_FLSWDATA);
5164 DUMPREG(E1000_I210_FLSWCNT);
5165 DUMPREG(E1000_I210_FLA);
5166 DUMPREG(E1000_INVM_SIZE);
5167 DUMPREG(E1000_I210_TQAVCTRL);
5168 DUMPREG(E1000_RSRPD);
5169 DUMPREG(E1000_RAID);
5170 DUMPREG(E1000_TXDMAC);
5171 DUMPREG(E1000_KABGTXD);
5172 DUMPREG(E1000_PBSLAC);
5173 DUMPREG(E1000_TXPBS);
5174 DUMPREG(E1000_ITPBS);
5175 DUMPREG(E1000_TDFH);
5176 DUMPREG(E1000_TDFT);
5177 DUMPREG(E1000_TDFHS);
5178 DUMPREG(E1000_TDFTS);
5179 DUMPREG(E1000_TDFPC);
5180 DUMPREG(E1000_TDPUMB);
5181 DUMPREG(E1000_TDPUAD);
5182 DUMPREG(E1000_TDPUWD);
5183 DUMPREG(E1000_TDPURD);
5184 DUMPREG(E1000_TDPUCTL);
5185 DUMPREG(E1000_DTXCTL);
5186 DUMPREG(E1000_DTXTCPFLGL);
5187 DUMPREG(E1000_DTXTCPFLGH);
5188 DUMPREG(E1000_DTXMXSZRQ);
5189 DUMPREG(E1000_TIDV);
5190 DUMPREG(E1000_TADV);
5191 DUMPREG(E1000_TSPMT);
5192 DUMPREG(E1000_VFGPRC);
5193 DUMPREG(E1000_VFGORC);
5194 DUMPREG(E1000_VFMPRC);
5195 DUMPREG(E1000_VFGPTC);
5196 DUMPREG(E1000_VFGOTC);
5197 DUMPREG(E1000_VFGOTLBC);
5198 DUMPREG(E1000_VFGPTLBC);
5199 DUMPREG(E1000_VFGORLBC);
5200 DUMPREG(E1000_VFGPRLBC);
5201 DUMPREG(E1000_LSECTXCAP);
5202 DUMPREG(E1000_LSECRXCAP);
5203 DUMPREG(E1000_LSECTXCTRL);
5204 DUMPREG(E1000_LSECRXCTRL);
5205 DUMPREG(E1000_LSECTXSCL);
5206 DUMPREG(E1000_LSECTXSCH);
5207 DUMPREG(E1000_LSECTXSA);
5208 DUMPREG(E1000_LSECTXPN0);
5209 DUMPREG(E1000_LSECTXPN1);
5210 DUMPREG(E1000_LSECRXSCL);
5211 DUMPREG(E1000_LSECRXSCH);
5212 DUMPREG(E1000_IPSCTRL);
5213 DUMPREG(E1000_IPSRXCMD);
5214 DUMPREG(E1000_IPSRXIDX);
5215 DUMPREG(E1000_IPSRXSALT);
5216 DUMPREG(E1000_IPSRXSPI);
5217 DUMPREG(E1000_IPSTXSALT);
5218 DUMPREG(E1000_IPSTXIDX);
5219 DUMPREG(E1000_PCS_CFG0);
5220 DUMPREG(E1000_PCS_LCTL);
5221 DUMPREG(E1000_PCS_LSTAT);
5222 DUMPREG(E1000_PCS_ANADV);
5223 DUMPREG(E1000_PCS_LPAB);
5224 DUMPREG(E1000_PCS_NPTX);
5225 DUMPREG(E1000_PCS_LPABNP);
5226 DUMPREG(E1000_RXCSUM);
5227 DUMPREG(E1000_RLPML);
5228 DUMPREG(E1000_RFCTL);
5229 DUMPREG(E1000_MTA);
5230 DUMPREG(E1000_RA);
5231 DUMPREG(E1000_RA2);
5232 DUMPREG(E1000_VFTA);
5233 DUMPREG(E1000_VT_CTL);
5234 DUMPREG(E1000_CIAA);
5235 DUMPREG(E1000_CIAD);
5236 DUMPREG(E1000_VFQA0);
5237 DUMPREG(E1000_VFQA1);
5238 DUMPREG(E1000_WUC);
5239 DUMPREG(E1000_WUFC);
5240 DUMPREG(E1000_WUS);
5241 DUMPREG(E1000_MANC);
5242 DUMPREG(E1000_IPAV);
5243 DUMPREG(E1000_IP4AT);
5244 DUMPREG(E1000_IP6AT);
5245 DUMPREG(E1000_WUPL);
5246 DUMPREG(E1000_WUPM);
5247 DUMPREG(E1000_PBACL);
5248 DUMPREG(E1000_FFLT);
5249 DUMPREG(E1000_HOST_IF);
5250 DUMPREG(E1000_HIBBA);
5251 DUMPREG(E1000_KMRNCTRLSTA);
5252 DUMPREG(E1000_MANC2H);
5253 DUMPREG(E1000_CCMCTL);
5254 DUMPREG(E1000_GIOCTL);
5255 DUMPREG(E1000_SCCTL);
5256
5257 #define E1000_WCS 0x558C
5258 DUMPREG(E1000_WCS);
5259 #define E1000_GCR_EXT 0x586C
5260 DUMPREG(E1000_GCR_EXT);
5261 DUMPREG(E1000_GCR);
5262 DUMPREG(E1000_GCR2);
5263 DUMPREG(E1000_FACTPS);
5264 DUMPREG(E1000_DCA_ID);
5265 DUMPREG(E1000_DCA_CTRL);
5266 DUMPREG(E1000_UFUSE);
5267 DUMPREG(E1000_FFLT_DBG);
5268 DUMPREG(E1000_HICR);
5269 DUMPREG(E1000_FWSTS);
5270 DUMPREG(E1000_CPUVEC);
5271 DUMPREG(E1000_MRQC);
5272 DUMPREG(E1000_SWPBS);
5273 DUMPREG(E1000_MBVFICR);
5274 DUMPREG(E1000_MBVFIMR);
5275 DUMPREG(E1000_VFLRE);
5276 DUMPREG(E1000_VFRE);
5277 DUMPREG(E1000_VFTE);
5278 DUMPREG(E1000_QDE);
5279 DUMPREG(E1000_DTXSWC);
5280 DUMPREG(E1000_WVBR);
5281 DUMPREG(E1000_RPLOLR);
5282 DUMPREG(E1000_UTA);
5283 DUMPREG(E1000_IOVTCL);
5284 DUMPREG(E1000_VMRCTL);
5285 DUMPREG(E1000_VMRVLAN);
5286 DUMPREG(E1000_VMRVM);
5287 DUMPREG(E1000_LVMMC);
5288 DUMPREG(E1000_TXSWC);
5289 DUMPREG(E1000_SCCRL);
5290 DUMPREG(E1000_BSCTRH);
5291 DUMPREG(E1000_MSCTRH);
5292 DUMPREG(E1000_RXSTMPL);
5293 DUMPREG(E1000_RXSTMPH);
5294 DUMPREG(E1000_RXSATRL);
5295 DUMPREG(E1000_RXSATRH);
5296 DUMPREG(E1000_TXSTMPL);
5297 DUMPREG(E1000_TXSTMPH);
5298 DUMPREG(E1000_TIMINCA);
5299 DUMPREG(E1000_TIMADJL);
5300 DUMPREG(E1000_TIMADJH);
5301 DUMPREG(E1000_TSAUXC);
5302 DUMPREG(E1000_SYSSTMPL);
5303 DUMPREG(E1000_SYSSTMPH);
5304 DUMPREG(E1000_PLTSTMPL);
5305 DUMPREG(E1000_PLTSTMPH);
5306 DUMPREG(E1000_RXMTRL);
5307 DUMPREG(E1000_RXUDP);
5308 DUMPREG(E1000_SYSTIMR);
5309 DUMPREG(E1000_TSICR);
5310 DUMPREG(E1000_TSIM);
5311 DUMPREG(E1000_DMACR);
5312 DUMPREG(E1000_DMCTXTH);
5313 DUMPREG(E1000_DMCTLX);
5314 DUMPREG(E1000_DMCRTRH);
5315 DUMPREG(E1000_DMCCNT);
5316 DUMPREG(E1000_FCRTC);
5317 DUMPREG(E1000_PCIEMISC);
5318 DUMPREG(E1000_PCIEERRSTS);
5319 DUMPREG(E1000_IPCNFG);
5320 DUMPREG(E1000_LTRC);
5321 DUMPREG(E1000_EEER);
5322 DUMPREG(E1000_EEE_SU);
5323 DUMPREG(E1000_TLPIC);
5324 DUMPREG(E1000_RLPIC);
5325 if (++col != 1)
5326 kprintf("\n");
5327 kprintf("\n");
5328 }
5329
5330 static int
igb_sysctl_reg_dump(SYSCTL_HANDLER_ARGS)5331 igb_sysctl_reg_dump(SYSCTL_HANDLER_ARGS)
5332 {
5333 struct igb_softc *sc = (void *)arg1;
5334 struct ifnet *ifp = &sc->arpcom.ac_if;
5335 int error, dump = 0;
5336
5337 error = sysctl_handle_int(oidp, &dump, 0, req);
5338 if (error || req->newptr == NULL)
5339 return error;
5340 if (dump <= 0)
5341 return EINVAL;
5342
5343 ifnet_serialize_all(ifp);
5344 igb_reg_dump(sc);
5345 ifnet_deserialize_all(ifp);
5346
5347 return error;
5348 }
5349