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igb: Remove unused code
[dragonfly.git] / sys / dev / netif / igb / if_igb.c
CommitLineData
1f7e3916
SZ		 1/*
2 * Copyright (c) 2001-2011, 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
d0f59cad 32#include "opt_ifpoll.h"
8d6600da 33#include "opt_igb.h"
1f7e3916
SZ		 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/toeplitz.h>
59#include <net/toeplitz2.h>
60#include <net/vlan/if_vlan_var.h>
61#include <net/vlan/if_vlan_ether.h>
62#include <net/if_poll.h>
63
64#include <netinet/in_systm.h>
65#include <netinet/in.h>
66#include <netinet/ip.h>
67#include <netinet/tcp.h>
68#include <netinet/udp.h>
69
70#include <bus/pci/pcivar.h>
71#include <bus/pci/pcireg.h>
72
73#include <dev/netif/ig_hal/e1000_api.h>
74#include <dev/netif/ig_hal/e1000_82575.h>
75#include <dev/netif/igb/if_igb.h>
76
8d6600da
SZ		 77#ifdef IGB_RSS_DEBUG
78#define IGB_RSS_DPRINTF(sc, lvl, fmt, ...) \
79do { \
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
1f7e3916
SZ		 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
92static 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
125 /* required last entry */
126 IGB_DEVICE_NULL
127};
128
129static int igb_probe(device_t);
130static int igb_attach(device_t);
131static int igb_detach(device_t);
132static int igb_shutdown(device_t);
133static int igb_suspend(device_t);
134static int igb_resume(device_t);
135
136static boolean_t igb_is_valid_ether_addr(const uint8_t *);
137static void igb_setup_ifp(struct igb_softc *);
48faa653 138static boolean_t igb_txcsum_ctx(struct igb_tx_ring *, struct mbuf *);
23f6ffe4
SZ		 139static int igb_tso_pullup(struct igb_tx_ring *, struct mbuf **);
140static void igb_tso_ctx(struct igb_tx_ring *, struct mbuf *, uint32_t *);
1f7e3916
SZ		 141static void igb_add_sysctl(struct igb_softc *);
142static int igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS);
9c0ecdcc 143static int igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS);
b6220144 144static int igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS);
9c0ecdcc 145static void igb_set_ring_inuse(struct igb_softc *, boolean_t);
d0f59cad
SZ		 146#ifdef IFPOLL_ENABLE
147static int igb_sysctl_npoll_rxoff(SYSCTL_HANDLER_ARGS);
148static int igb_sysctl_npoll_txoff(SYSCTL_HANDLER_ARGS);
149#endif
1f7e3916
SZ		 150
151static void igb_vf_init_stats(struct igb_softc *);
152static void igb_reset(struct igb_softc *);
153static void igb_update_stats_counters(struct igb_softc *);
154static void igb_update_vf_stats_counters(struct igb_softc *);
155static void igb_update_link_status(struct igb_softc *);
156static void igb_init_tx_unit(struct igb_softc *);
157static void igb_init_rx_unit(struct igb_softc *);
158
159static void igb_set_vlan(struct igb_softc *);
160static void igb_set_multi(struct igb_softc *);
161static void igb_set_promisc(struct igb_softc *);
162static void igb_disable_promisc(struct igb_softc *);
163
a619b256
SZ		 164static int igb_alloc_rings(struct igb_softc *);
165static void igb_free_rings(struct igb_softc *);
1f7e3916
SZ		 166static int igb_create_tx_ring(struct igb_tx_ring *);
167static int igb_create_rx_ring(struct igb_rx_ring *);
168static void igb_free_tx_ring(struct igb_tx_ring *);
169static void igb_free_rx_ring(struct igb_rx_ring *);
170static void igb_destroy_tx_ring(struct igb_tx_ring *, int);
171static void igb_destroy_rx_ring(struct igb_rx_ring *, int);
172static void igb_init_tx_ring(struct igb_tx_ring *);
173static int igb_init_rx_ring(struct igb_rx_ring *);
174static int igb_newbuf(struct igb_rx_ring *, int, boolean_t);
175static int igb_encap(struct igb_tx_ring *, struct mbuf **);
176
177static void igb_stop(struct igb_softc *);
178static void igb_init(void *);
179static int igb_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
180static void igb_media_status(struct ifnet *, struct ifmediareq *);
181static int igb_media_change(struct ifnet *);
182static void igb_timer(void *);
183static void igb_watchdog(struct ifnet *);
184static void igb_start(struct ifnet *);
d0f59cad
SZ		 185#ifdef IFPOLL_ENABLE
186static void igb_npoll(struct ifnet *, struct ifpoll_info *);
187static void igb_npoll_rx(struct ifnet *, void *, int);
188static void igb_npoll_tx(struct ifnet *, void *, int);
189static void igb_npoll_status(struct ifnet *, int);
1f7e3916 190#endif
7d235eb5
SZ		 191static void igb_serialize(struct ifnet *, enum ifnet_serialize);
192static void igb_deserialize(struct ifnet *, enum ifnet_serialize);
193static int igb_tryserialize(struct ifnet *, enum ifnet_serialize);
194#ifdef INVARIANTS
195static void igb_serialize_assert(struct ifnet *, enum ifnet_serialize,
196 boolean_t);
197#endif
1f7e3916
SZ		 198
199static void igb_intr(void *);
9c0ecdcc 200static void igb_intr_shared(void *);
1f7e3916
SZ		 201static void igb_rxeof(struct igb_rx_ring *, int);
202static void igb_txeof(struct igb_tx_ring *);
9c0ecdcc 203static void igb_set_eitr(struct igb_softc *, int, int);
1f7e3916
SZ		 204static void igb_enable_intr(struct igb_softc *);
205static void igb_disable_intr(struct igb_softc *);
f6167a56
SZ		 206static void igb_init_unshared_intr(struct igb_softc *);
207static void igb_init_intr(struct igb_softc *);
208static int igb_setup_intr(struct igb_softc *);
9c0ecdcc
SZ		 209static void igb_set_txintr_mask(struct igb_tx_ring *, int *, int);
210static void igb_set_rxintr_mask(struct igb_rx_ring *, int *, int);
be922da6 211static void igb_set_intr_mask(struct igb_softc *);
3c7cc5e2
SZ		 212static int igb_alloc_intr(struct igb_softc *);
213static void igb_free_intr(struct igb_softc *);
9c0ecdcc
SZ		 214static void igb_teardown_intr(struct igb_softc *);
215static void igb_msix_try_alloc(struct igb_softc *);
216static void igb_msix_free(struct igb_softc *, boolean_t);
217static int igb_msix_setup(struct igb_softc *);
218static void igb_msix_teardown(struct igb_softc *, int);
219static void igb_msix_rx(void *);
220static void igb_msix_tx(void *);
221static void igb_msix_status(void *);
1f7e3916
SZ		 222
223/* Management and WOL Support */
224static void igb_get_mgmt(struct igb_softc *);
225static void igb_rel_mgmt(struct igb_softc *);
226static void igb_get_hw_control(struct igb_softc *);
73a4e8ed
SZ		 227static void igb_rel_hw_control(struct igb_softc *);
228static void igb_enable_wol(device_t);
1f7e3916
SZ		 229
230static device_method_t igb_methods[] = {
231 /* Device interface */
232 DEVMETHOD(device_probe, igb_probe),
233 DEVMETHOD(device_attach, igb_attach),
234 DEVMETHOD(device_detach, igb_detach),
235 DEVMETHOD(device_shutdown, igb_shutdown),
236 DEVMETHOD(device_suspend, igb_suspend),
237 DEVMETHOD(device_resume, igb_resume),
238 { 0, 0 }
239};
240
241static driver_t igb_driver = {
242 "igb",
243 igb_methods,
244 sizeof(struct igb_softc),
245};
246
247static devclass_t igb_devclass;
248
249DECLARE_DUMMY_MODULE(if_igb);
250MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
251DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
252
253static int igb_rxd = IGB_DEFAULT_RXD;
254static int igb_txd = IGB_DEFAULT_TXD;
8d6600da 255static int igb_rxr = 0;
1f7e3916
SZ		 256static int igb_msi_enable = 1;
257static int igb_msix_enable = 1;
258static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
259static int igb_fc_setting = e1000_fc_full;
260
261/*
262 * DMA Coalescing, only for i350 - default to off,
263 * this feature is for power savings
264 */
265static int igb_dma_coalesce = 0;
266
267TUNABLE_INT("hw.igb.rxd", &igb_rxd);
268TUNABLE_INT("hw.igb.txd", &igb_txd);
8d6600da 269TUNABLE_INT("hw.igb.rxr", &igb_rxr);
1f7e3916
SZ		 270TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
271TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
272TUNABLE_INT("hw.igb.fc_setting", &igb_fc_setting);
273
274/* i350 specific */
275TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
276TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
277
278static __inline void
279igb_rxcsum(uint32_t staterr, struct mbuf *mp)
280{
281 /* Ignore Checksum bit is set */
282 if (staterr & E1000_RXD_STAT_IXSM)
283 return;
284
285 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
286 E1000_RXD_STAT_IPCS)
287 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
288
289 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
290 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
291 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
292 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
293 mp->m_pkthdr.csum_data = htons(0xffff);
294 }
295 }
296}
297
8d6600da
SZ		 298static __inline struct pktinfo *
299igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
300 uint32_t hash, uint32_t hashtype, uint32_t staterr)
301{
302 switch (hashtype) {
303 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
304 pi->pi_netisr = NETISR_IP;
305 pi->pi_flags = 0;
306 pi->pi_l3proto = IPPROTO_TCP;
307 break;
308
309 case E1000_RXDADV_RSSTYPE_IPV4:
310 if (staterr & E1000_RXD_STAT_IXSM)
311 return NULL;
312
313 if ((staterr &
314 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
315 E1000_RXD_STAT_TCPCS) {
316 pi->pi_netisr = NETISR_IP;
317 pi->pi_flags = 0;
318 pi->pi_l3proto = IPPROTO_UDP;
319 break;
320 }
321 /* FALL THROUGH */
322 default:
323 return NULL;
324 }
325
326 m->m_flags |= M_HASH;
327 m->m_pkthdr.hash = toeplitz_hash(hash);
328 return pi;
329}
330
1f7e3916
SZ		 331static int
332igb_probe(device_t dev)
333{
334 const struct igb_device *d;
335 uint16_t vid, did;
336
337 vid = pci_get_vendor(dev);
338 did = pci_get_device(dev);
339
340 for (d = igb_devices; d->desc != NULL; ++d) {
341 if (vid == d->vid && did == d->did) {
342 device_set_desc(dev, d->desc);
343 return 0;
344 }
345 }
346 return ENXIO;
347}
348
349static int
350igb_attach(device_t dev)
351{
352 struct igb_softc *sc = device_get_softc(dev);
1f7e3916 353 uint16_t eeprom_data;
8d6600da 354 int error = 0, i, j, ring_max;
d0f59cad
SZ		 355#ifdef IFPOLL_ENABLE
356 int offset, offset_def;
357#endif
1f7e3916
SZ		 358
359#ifdef notyet
360 /* SYSCTL stuff */
361 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
362 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
363 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
364 igb_sysctl_nvm_info, "I", "NVM Information");
1f7e3916
SZ		 365 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
366 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
367 OID_AUTO, "flow_control", CTLTYPE_INT|CTLFLAG_RW,
368 adapter, 0, igb_set_flowcntl, "I", "Flow Control");
369#endif
370
371 callout_init_mp(&sc->timer);
9c0ecdcc 372 lwkt_serialize_init(&sc->main_serialize);
1f7e3916 373
62be5890
SZ		 374 if_initname(&sc->arpcom.ac_if, device_get_name(dev),
375 device_get_unit(dev));
1f7e3916
SZ		 376 sc->dev = sc->osdep.dev = dev;
377
378 /*
379 * Determine hardware and mac type
380 */
381 sc->hw.vendor_id = pci_get_vendor(dev);
382 sc->hw.device_id = pci_get_device(dev);
383 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
384 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
385 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
386
387 if (e1000_set_mac_type(&sc->hw))
388 return ENXIO;
389
390 /* Are we a VF device? */
391 if (sc->hw.mac.type == e1000_vfadapt ||
392 sc->hw.mac.type == e1000_vfadapt_i350)
393 sc->vf_ifp = 1;
394 else
395 sc->vf_ifp = 0;
396
9b7aa975
SZ		 397 /*
398 * Configure total supported RX/TX ring count
399 */
400 switch (sc->hw.mac.type) {
401 case e1000_82575:
402 ring_max = IGB_MAX_RING_82575;
403 break;
404 case e1000_82580:
405 ring_max = IGB_MAX_RING_82580;
406 break;
407 case e1000_i350:
408 ring_max = IGB_MAX_RING_I350;
409 break;
410 case e1000_82576:
411 ring_max = IGB_MAX_RING_82576;
412 break;
413 default:
414 ring_max = IGB_MIN_RING;
415 break;
416 }
417 sc->rx_ring_cnt = device_getenv_int(dev, "rxr", igb_rxr);
418 sc->rx_ring_cnt = if_ring_count2(sc->rx_ring_cnt, ring_max);
419#ifdef IGB_RSS_DEBUG
420 sc->rx_ring_cnt = device_getenv_int(dev, "rxr_debug", sc->rx_ring_cnt);
421#endif
422 sc->rx_ring_inuse = sc->rx_ring_cnt;
423 sc->tx_ring_cnt = 1; /* XXX */
424
23f6ffe4
SZ		 425 if (sc->hw.mac.type == e1000_82575)
426 sc->flags |= IGB_FLAG_TSO_IPLEN0;
427
1f7e3916
SZ		 428 /* Enable bus mastering */
429 pci_enable_busmaster(dev);
430
431 /*
432 * Allocate IO memory
433 */
434 sc->mem_rid = PCIR_BAR(0);
435 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
436 RF_ACTIVE);
437 if (sc->mem_res == NULL) {
438 device_printf(dev, "Unable to allocate bus resource: memory\n");
439 error = ENXIO;
440 goto failed;
441 }
442 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
443 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
444
445 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
446
1f7e3916
SZ		 447 /* Save PCI command register for Shared Code */
448 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
449 sc->hw.back = &sc->osdep;
450
1f7e3916
SZ		 451 /* Do Shared Code initialization */
452 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
453 device_printf(dev, "Setup of Shared code failed\n");
454 error = ENXIO;
455 goto failed;
456 }
457
458 e1000_get_bus_info(&sc->hw);
459
460 sc->hw.mac.autoneg = DO_AUTO_NEG;
461 sc->hw.phy.autoneg_wait_to_complete = FALSE;
462 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
463
464 /* Copper options */
465 if (sc->hw.phy.media_type == e1000_media_type_copper) {
466 sc->hw.phy.mdix = AUTO_ALL_MODES;
467 sc->hw.phy.disable_polarity_correction = FALSE;
468 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
469 }
470
471 /* Set the frame limits assuming standard ethernet sized frames. */
472 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
1f7e3916 473
a619b256
SZ		 474 /* Allocate RX/TX rings */
475 error = igb_alloc_rings(sc);
1f7e3916
SZ		 476 if (error)
477 goto failed;
478
d0f59cad
SZ		 479#ifdef IFPOLL_ENABLE
480 /*
481 * NPOLLING RX CPU offset
482 */
483 if (sc->rx_ring_cnt == ncpus2) {
484 offset = 0;
485 } else {
486 offset_def = (sc->rx_ring_cnt * device_get_unit(dev)) % ncpus2;
487 offset = device_getenv_int(dev, "npoll.rxoff", offset_def);
488 if (offset >= ncpus2 ||
489 offset % sc->rx_ring_cnt != 0) {
490 device_printf(dev, "invalid npoll.rxoff %d, use %d\n",
491 offset, offset_def);
492 offset = offset_def;
493 }
494 }
495 sc->rx_npoll_off = offset;
496
497 /*
498 * NPOLLING TX CPU offset
499 */
500 offset_def = sc->rx_npoll_off;
501 offset = device_getenv_int(dev, "npoll.txoff", offset_def);
502 if (offset >= ncpus2) {
503 device_printf(dev, "invalid npoll.txoff %d, use %d\n",
504 offset, offset_def);
505 offset = offset_def;
506 }
507 sc->tx_npoll_off = offset;
508#endif
509
3c7cc5e2
SZ		 510 /* Allocate interrupt */
511 error = igb_alloc_intr(sc);
512 if (error)
a1647e40 513 goto failed;
a1647e40
SZ		 514
515 /*
7d235eb5
SZ		 516 * Setup serializers
517 */
7d235eb5
SZ		 518 i = 0;
519 sc->serializes[i++] = &sc->main_serialize;
520
521 sc->tx_serialize = i;
522 for (j = 0; j < sc->tx_ring_cnt; ++j)
523 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
524
525 sc->rx_serialize = i;
526 for (j = 0; j < sc->rx_ring_cnt; ++j)
527 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
528
529 sc->serialize_cnt = i;
530 KKASSERT(sc->serialize_cnt <= IGB_NSERIALIZE);
531
1f7e3916
SZ		 532 /* Allocate the appropriate stats memory */
533 if (sc->vf_ifp) {
534 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
535 M_WAITOK | M_ZERO);
536 igb_vf_init_stats(sc);
537 } else {
538 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
539 M_WAITOK | M_ZERO);
540 }
541
542 /* Allocate multicast array memory. */
543 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
544 M_DEVBUF, M_WAITOK);
545
546 /* Some adapter-specific advanced features */
547 if (sc->hw.mac.type >= e1000_i350) {
548#ifdef notyet
549 igb_set_sysctl_value(adapter, "dma_coalesce",
550 "configure dma coalesce",
551 &adapter->dma_coalesce, igb_dma_coalesce);
552 igb_set_sysctl_value(adapter, "eee_disabled",
553 "enable Energy Efficient Ethernet",
554 &adapter->hw.dev_spec._82575.eee_disable,
555 igb_eee_disabled);
556#else
557 sc->dma_coalesce = igb_dma_coalesce;
558 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
559#endif
560 e1000_set_eee_i350(&sc->hw);
561 }
562
563 /*
564 * Start from a known state, this is important in reading the nvm and
565 * mac from that.
566 */
567 e1000_reset_hw(&sc->hw);
568
569 /* Make sure we have a good EEPROM before we read from it */
570 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
571 /*
572 * Some PCI-E parts fail the first check due to
573 * the link being in sleep state, call it again,
574 * if it fails a second time its a real issue.
575 */
576 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
577 device_printf(dev,
578 "The EEPROM Checksum Is Not Valid\n");
579 error = EIO;
580 goto failed;
581 }
582 }
583
584 /* Copy the permanent MAC address out of the EEPROM */
585 if (e1000_read_mac_addr(&sc->hw) < 0) {
586 device_printf(dev, "EEPROM read error while reading MAC"
587 " address\n");
588 error = EIO;
589 goto failed;
590 }
591 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
592 device_printf(dev, "Invalid MAC address\n");
593 error = EIO;
594 goto failed;
595 }
596
1f7e3916
SZ		 597 /* Setup OS specific network interface */
598 igb_setup_ifp(sc);
599
600 /* Add sysctl tree, must after igb_setup_ifp() */
601 igb_add_sysctl(sc);
602
603 /* Now get a good starting state */
604 igb_reset(sc);
605
606 /* Initialize statistics */
607 igb_update_stats_counters(sc);
608
609 sc->hw.mac.get_link_status = 1;
610 igb_update_link_status(sc);
611
612 /* Indicate SOL/IDER usage */
613 if (e1000_check_reset_block(&sc->hw)) {
614 device_printf(dev,
615 "PHY reset is blocked due to SOL/IDER session.\n");
616 }
617
618 /* Determine if we have to control management hardware */
396b7048
SZ		 619 if (e1000_enable_mng_pass_thru(&sc->hw))
620 sc->flags |= IGB_FLAG_HAS_MGMT;
1f7e3916
SZ		 621
622 /*
623 * Setup Wake-on-Lan
624 */
625 /* APME bit in EEPROM is mapped to WUC.APME */
626 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
627 if (eeprom_data)
628 sc->wol = E1000_WUFC_MAG;
629 /* XXX disable WOL */
630 sc->wol = 0;
631
632#ifdef notyet
633 /* Register for VLAN events */
634 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
635 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
636 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
637 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
638#endif
639
640#ifdef notyet
641 igb_add_hw_stats(adapter);
642#endif
643
f6167a56 644 error = igb_setup_intr(sc);
1f7e3916 645 if (error) {
1f7e3916
SZ		 646 ether_ifdetach(&sc->arpcom.ac_if);
647 goto failed;
648 }
1f7e3916
SZ		 649 return 0;
650
651failed:
652 igb_detach(dev);
653 return error;
654}
655
656static int
657igb_detach(device_t dev)
658{
659 struct igb_softc *sc = device_get_softc(dev);
660
661 if (device_is_attached(dev)) {
662 struct ifnet *ifp = &sc->arpcom.ac_if;
663
664 ifnet_serialize_all(ifp);
665
666 igb_stop(sc);
667
668 e1000_phy_hw_reset(&sc->hw);
669
670 /* Give control back to firmware */
671 igb_rel_mgmt(sc);
672 igb_rel_hw_control(sc);
673
674 if (sc->wol) {
675 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
676 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
677 igb_enable_wol(dev);
678 }
679
9c0ecdcc 680 igb_teardown_intr(sc);
1f7e3916
SZ		 681
682 ifnet_deserialize_all(ifp);
683
684 ether_ifdetach(ifp);
685 } else if (sc->mem_res != NULL) {
686 igb_rel_hw_control(sc);
687 }
688 bus_generic_detach(dev);
689
9c0ecdcc
SZ		 690 if (sc->sysctl_tree != NULL)
691 sysctl_ctx_free(&sc->sysctl_ctx);
692
3c7cc5e2 693 igb_free_intr(sc);
1f7e3916 694
9c0ecdcc
SZ		 695 if (sc->msix_mem_res != NULL) {
696 bus_release_resource(dev, SYS_RES_MEMORY, sc->msix_mem_rid,
697 sc->msix_mem_res);
698 }
1f7e3916
SZ		 699 if (sc->mem_res != NULL) {
700 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
701 sc->mem_res);
702 }
703
a619b256 704 igb_free_rings(sc);
1f7e3916
SZ		 705
706 if (sc->mta != NULL)
707 kfree(sc->mta, M_DEVBUF);
708 if (sc->stats != NULL)
709 kfree(sc->stats, M_DEVBUF);
710
1f7e3916
SZ		 711 return 0;
712}
713
714static int
715igb_shutdown(device_t dev)
716{
717 return igb_suspend(dev);
718}
719
720static int
721igb_suspend(device_t dev)
722{
723 struct igb_softc *sc = device_get_softc(dev);
724 struct ifnet *ifp = &sc->arpcom.ac_if;
725
726 ifnet_serialize_all(ifp);
727
728 igb_stop(sc);
729
730 igb_rel_mgmt(sc);
731 igb_rel_hw_control(sc);
732
733 if (sc->wol) {
734 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
735 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
736 igb_enable_wol(dev);
737 }
738
739 ifnet_deserialize_all(ifp);
740
741 return bus_generic_suspend(dev);
742}
743
744static int
745igb_resume(device_t dev)
746{
747 struct igb_softc *sc = device_get_softc(dev);
748 struct ifnet *ifp = &sc->arpcom.ac_if;
749
750 ifnet_serialize_all(ifp);
751
752 igb_init(sc);
753 igb_get_mgmt(sc);
754
755 if_devstart(ifp);
756
757 ifnet_deserialize_all(ifp);
758
759 return bus_generic_resume(dev);
760}
761
762static int
763igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
764{
765 struct igb_softc *sc = ifp->if_softc;
766 struct ifreq *ifr = (struct ifreq *)data;
767 int max_frame_size, mask, reinit;
768 int error = 0;
769
770 ASSERT_IFNET_SERIALIZED_ALL(ifp);
771
772 switch (command) {
773 case SIOCSIFMTU:
774 max_frame_size = 9234;
775 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
776 ETHER_CRC_LEN) {
777 error = EINVAL;
778 break;
779 }
780
781 ifp->if_mtu = ifr->ifr_mtu;
782 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
783 ETHER_CRC_LEN;
784
785 if (ifp->if_flags & IFF_RUNNING)
786 igb_init(sc);
787 break;
788
789 case SIOCSIFFLAGS:
790 if (ifp->if_flags & IFF_UP) {
791 if (ifp->if_flags & IFF_RUNNING) {
792 if ((ifp->if_flags ^ sc->if_flags) &
793 (IFF_PROMISC | IFF_ALLMULTI)) {
794 igb_disable_promisc(sc);
795 igb_set_promisc(sc);
796 }
797 } else {
798 igb_init(sc);
799 }
800 } else if (ifp->if_flags & IFF_RUNNING) {
801 igb_stop(sc);
802 }
803 sc->if_flags = ifp->if_flags;
804 break;
805
806 case SIOCADDMULTI:
807 case SIOCDELMULTI:
808 if (ifp->if_flags & IFF_RUNNING) {
809 igb_disable_intr(sc);
810 igb_set_multi(sc);
d0f59cad
SZ		 811#ifdef IFPOLL_ENABLE
812 if (!(ifp->if_flags & IFF_NPOLLING))
1f7e3916
SZ		 813#endif
814 igb_enable_intr(sc);
815 }
816 break;
817
818 case SIOCSIFMEDIA:
819 /*
820 * As the speed/duplex settings are being
821 * changed, we need toreset the PHY.
822 */
823 sc->hw.phy.reset_disable = FALSE;
824
825 /* Check SOL/IDER usage */
826 if (e1000_check_reset_block(&sc->hw)) {
827 if_printf(ifp, "Media change is "
828 "blocked due to SOL/IDER session.\n");
829 break;
830 }
831 /* FALL THROUGH */
832
833 case SIOCGIFMEDIA:
834 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
835 break;
836
837 case SIOCSIFCAP:
838 reinit = 0;
839 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
77d8cab9
SZ		 840 if (mask & IFCAP_RXCSUM) {
841 ifp->if_capenable ^= IFCAP_RXCSUM;
1f7e3916
SZ		 842 reinit = 1;
843 }
844 if (mask & IFCAP_VLAN_HWTAGGING) {
845 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
846 reinit = 1;
847 }
77d8cab9
SZ		 848 if (mask & IFCAP_TXCSUM) {
849 ifp->if_capenable ^= IFCAP_TXCSUM;
850 if (ifp->if_capenable & IFCAP_TXCSUM)
851 ifp->if_hwassist |= IGB_CSUM_FEATURES;
852 else
853 ifp->if_hwassist &= ~IGB_CSUM_FEATURES;
854 }
23f6ffe4
SZ		 855 if (mask & IFCAP_TSO) {
856 ifp->if_capenable ^= IFCAP_TSO;
857 if (ifp->if_capenable & IFCAP_TSO)
858 ifp->if_hwassist |= CSUM_TSO;
859 else
860 ifp->if_hwassist &= ~CSUM_TSO;
861 }
8d6600da
SZ		 862 if (mask & IFCAP_RSS)
863 ifp->if_capenable ^= IFCAP_RSS;
1f7e3916
SZ		 864 if (reinit && (ifp->if_flags & IFF_RUNNING))
865 igb_init(sc);
866 break;
867
868 default:
869 error = ether_ioctl(ifp, command, data);
870 break;
871 }
872 return error;
873}
874
875static void
876igb_init(void *xsc)
877{
878 struct igb_softc *sc = xsc;
879 struct ifnet *ifp = &sc->arpcom.ac_if;
9c0ecdcc 880 boolean_t polling;
1f7e3916
SZ		 881 int i;
882
883 ASSERT_IFNET_SERIALIZED_ALL(ifp);
884
885 igb_stop(sc);
886
887 /* Get the latest mac address, User can use a LAA */
888 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
889
890 /* Put the address into the Receive Address Array */
891 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
892
893 igb_reset(sc);
894 igb_update_link_status(sc);
895
896 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
897
1f7e3916
SZ		 898 /* Configure for OS presence */
899 igb_get_mgmt(sc);
900
9c0ecdcc 901 polling = FALSE;
d0f59cad
SZ		 902#ifdef IFPOLL_ENABLE
903 if (ifp->if_flags & IFF_NPOLLING)
9c0ecdcc 904 polling = TRUE;
be922da6 905#endif
9c0ecdcc
SZ		 906
907 /* Configured used RX/TX rings */
908 igb_set_ring_inuse(sc, polling);
909
910 /* Initialize interrupt */
911 igb_init_intr(sc);
be922da6 912
1f7e3916 913 /* Prepare transmit descriptors and buffers */
27866bf1 914 for (i = 0; i < sc->tx_ring_cnt; ++i)
1f7e3916
SZ		 915 igb_init_tx_ring(&sc->tx_rings[i]);
916 igb_init_tx_unit(sc);
917
918 /* Setup Multicast table */
919 igb_set_multi(sc);
920
921#if 0
922 /*
923 * Figure out the desired mbuf pool
924 * for doing jumbo/packetsplit
925 */
926 if (adapter->max_frame_size <= 2048)
927 adapter->rx_mbuf_sz = MCLBYTES;
928 else if (adapter->max_frame_size <= 4096)
929 adapter->rx_mbuf_sz = MJUMPAGESIZE;
930 else
931 adapter->rx_mbuf_sz = MJUM9BYTES;
1f7e3916
SZ		 932#endif
933
934 /* Prepare receive descriptors and buffers */
be922da6 935 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 936 int error;
937
938 error = igb_init_rx_ring(&sc->rx_rings[i]);
939 if (error) {
940 if_printf(ifp, "Could not setup receive structures\n");
941 igb_stop(sc);
942 return;
943 }
944 }
945 igb_init_rx_unit(sc);
946
947 /* Enable VLAN support */
948 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
949 igb_set_vlan(sc);
950
951 /* Don't lose promiscuous settings */
952 igb_set_promisc(sc);
953
1f7e3916
SZ		 954 ifp->if_flags |= IFF_RUNNING;
955 ifp->if_flags &= ~IFF_OACTIVE;
956
957 callout_reset(&sc->timer, hz, igb_timer, sc);
958 e1000_clear_hw_cntrs_base_generic(&sc->hw);
959
9c0ecdcc 960 /* This clears any pending interrupts */
1f7e3916 961 E1000_READ_REG(&sc->hw, E1000_ICR);
9c0ecdcc 962
1f7e3916
SZ		 963 /*
964 * Only enable interrupts if we are not polling, make sure
965 * they are off otherwise.
966 */
9c0ecdcc 967 if (polling) {
1f7e3916 968 igb_disable_intr(sc);
9c0ecdcc 969 } else {
1f7e3916
SZ		 970 igb_enable_intr(sc);
971 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
972 }
973
974 /* Set Energy Efficient Ethernet */
975 e1000_set_eee_i350(&sc->hw);
976
977 /* Don't reset the phy next time init gets called */
978 sc->hw.phy.reset_disable = TRUE;
979}
980
981static void
982igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
983{
984 struct igb_softc *sc = ifp->if_softc;
985 u_char fiber_type = IFM_1000_SX;
986
987 ASSERT_IFNET_SERIALIZED_ALL(ifp);
988
989 igb_update_link_status(sc);
990
991 ifmr->ifm_status = IFM_AVALID;
992 ifmr->ifm_active = IFM_ETHER;
993
994 if (!sc->link_active)
995 return;
996
997 ifmr->ifm_status |= IFM_ACTIVE;
998
999 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1000 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1001 ifmr->ifm_active |= fiber_type | IFM_FDX;
1002 } else {
1003 switch (sc->link_speed) {
1004 case 10:
1005 ifmr->ifm_active |= IFM_10_T;
1006 break;
1007
1008 case 100:
1009 ifmr->ifm_active |= IFM_100_TX;
1010 break;
1011
1012 case 1000:
1013 ifmr->ifm_active |= IFM_1000_T;
1014 break;
1015 }
1016 if (sc->link_duplex == FULL_DUPLEX)
1017 ifmr->ifm_active |= IFM_FDX;
1018 else
1019 ifmr->ifm_active |= IFM_HDX;
1020 }
1021}
1022
1023static int
1024igb_media_change(struct ifnet *ifp)
1025{
1026 struct igb_softc *sc = ifp->if_softc;
1027 struct ifmedia *ifm = &sc->media;
1028
1029 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1030
1031 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1032 return EINVAL;
1033
1034 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1035 case IFM_AUTO:
1036 sc->hw.mac.autoneg = DO_AUTO_NEG;
1037 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1038 break;
1039
1040 case IFM_1000_LX:
1041 case IFM_1000_SX:
1042 case IFM_1000_T:
1043 sc->hw.mac.autoneg = DO_AUTO_NEG;
1044 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1045 break;
1046
1047 case IFM_100_TX:
1048 sc->hw.mac.autoneg = FALSE;
1049 sc->hw.phy.autoneg_advertised = 0;
1050 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1051 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1052 else
1053 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1054 break;
1055
1056 case IFM_10_T:
1057 sc->hw.mac.autoneg = FALSE;
1058 sc->hw.phy.autoneg_advertised = 0;
1059 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1060 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1061 else
1062 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1063 break;
1064
1065 default:
1066 if_printf(ifp, "Unsupported media type\n");
1067 break;
1068 }
1069
1070 igb_init(sc);
1071
1072 return 0;
1073}
1074
1075static void
1076igb_set_promisc(struct igb_softc *sc)
1077{
1078 struct ifnet *ifp = &sc->arpcom.ac_if;
1079 struct e1000_hw *hw = &sc->hw;
1080 uint32_t reg;
1081
1082 if (sc->vf_ifp) {
1083 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1084 return;
1085 }
1086
1087 reg = E1000_READ_REG(hw, E1000_RCTL);
1088 if (ifp->if_flags & IFF_PROMISC) {
1089 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1090 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1091 } else if (ifp->if_flags & IFF_ALLMULTI) {
1092 reg |= E1000_RCTL_MPE;
1093 reg &= ~E1000_RCTL_UPE;
1094 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1095 }
1096}
1097
1098static void
1099igb_disable_promisc(struct igb_softc *sc)
1100{
1101 struct e1000_hw *hw = &sc->hw;
1102 uint32_t reg;
1103
1104 if (sc->vf_ifp) {
1105 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1106 return;
1107 }
1108 reg = E1000_READ_REG(hw, E1000_RCTL);
1109 reg &= ~E1000_RCTL_UPE;
1110 reg &= ~E1000_RCTL_MPE;
1111 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1112}
1113
1114static void
1115igb_set_multi(struct igb_softc *sc)
1116{
1117 struct ifnet *ifp = &sc->arpcom.ac_if;
1118 struct ifmultiaddr *ifma;
1119 uint32_t reg_rctl = 0;
1120 uint8_t *mta;
1121 int mcnt = 0;
1122
1123 mta = sc->mta;
1124 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1125
1126 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1127 if (ifma->ifma_addr->sa_family != AF_LINK)
1128 continue;
1129
1130 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1131 break;
1132
1133 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1134 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1135 mcnt++;
1136 }
1137
1138 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1139 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1140 reg_rctl |= E1000_RCTL_MPE;
1141 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1142 } else {
1143 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1144 }
1145}
1146
1147static void
1148igb_timer(void *xsc)
1149{
1150 struct igb_softc *sc = xsc;
1f7e3916 1151
27dd00d6 1152 lwkt_serialize_enter(&sc->main_serialize);
1f7e3916
SZ		 1153
1154 igb_update_link_status(sc);
1155 igb_update_stats_counters(sc);
1156
1157 callout_reset(&sc->timer, hz, igb_timer, sc);
1158
27dd00d6 1159 lwkt_serialize_exit(&sc->main_serialize);
1f7e3916
SZ		 1160}
1161
1162static void
1163igb_update_link_status(struct igb_softc *sc)
1164{
1165 struct ifnet *ifp = &sc->arpcom.ac_if;
1166 struct e1000_hw *hw = &sc->hw;
1167 uint32_t link_check, thstat, ctrl;
1168
1169 link_check = thstat = ctrl = 0;
1170
1171 /* Get the cached link value or read for real */
1172 switch (hw->phy.media_type) {
1173 case e1000_media_type_copper:
1174 if (hw->mac.get_link_status) {
1175 /* Do the work to read phy */
1176 e1000_check_for_link(hw);
1177 link_check = !hw->mac.get_link_status;
1178 } else {
1179 link_check = TRUE;
1180 }
1181 break;
1182
1183 case e1000_media_type_fiber:
1184 e1000_check_for_link(hw);
1185 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1186 break;
1187
1188 case e1000_media_type_internal_serdes:
1189 e1000_check_for_link(hw);
1190 link_check = hw->mac.serdes_has_link;
1191 break;
1192
1193 /* VF device is type_unknown */
1194 case e1000_media_type_unknown:
1195 e1000_check_for_link(hw);
1196 link_check = !hw->mac.get_link_status;
1197 /* Fall thru */
1198 default:
1199 break;
1200 }
1201
1202 /* Check for thermal downshift or shutdown */
1203 if (hw->mac.type == e1000_i350) {
1204 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1205 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1206 }
1207
1208 /* Now we check if a transition has happened */
1209 if (link_check && sc->link_active == 0) {
1210 e1000_get_speed_and_duplex(hw,
1211 &sc->link_speed, &sc->link_duplex);
1212 if (bootverbose) {
1213 if_printf(ifp, "Link is up %d Mbps %s\n",
1214 sc->link_speed,
1215 sc->link_duplex == FULL_DUPLEX ?
1216 "Full Duplex" : "Half Duplex");
1217 }
1218 sc->link_active = 1;
1219
1220 ifp->if_baudrate = sc->link_speed * 1000000;
1221 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1222 (thstat & E1000_THSTAT_LINK_THROTTLE))
1223 if_printf(ifp, "Link: thermal downshift\n");
1224 /* This can sleep */
1225 ifp->if_link_state = LINK_STATE_UP;
1226 if_link_state_change(ifp);
1227 } else if (!link_check && sc->link_active == 1) {
1228 ifp->if_baudrate = sc->link_speed = 0;
1229 sc->link_duplex = 0;
1230 if (bootverbose)
1231 if_printf(ifp, "Link is Down\n");
1232 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1233 (thstat & E1000_THSTAT_PWR_DOWN))
1234 if_printf(ifp, "Link: thermal shutdown\n");
1235 sc->link_active = 0;
1236 /* This can sleep */
1237 ifp->if_link_state = LINK_STATE_DOWN;
1238 if_link_state_change(ifp);
1239 }
1240}
1241
1242static void
1243igb_stop(struct igb_softc *sc)
1244{
1245 struct ifnet *ifp = &sc->arpcom.ac_if;
1246 int i;
1247
1248 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1249
1250 igb_disable_intr(sc);
1251
1252 callout_stop(&sc->timer);
1253
1254 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1255 ifp->if_timer = 0;
1256
1257 e1000_reset_hw(&sc->hw);
1258 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1259
1260 e1000_led_off(&sc->hw);
1261 e1000_cleanup_led(&sc->hw);
1262
27866bf1 1263 for (i = 0; i < sc->tx_ring_cnt; ++i)
1f7e3916 1264 igb_free_tx_ring(&sc->tx_rings[i]);
27866bf1 1265 for (i = 0; i < sc->rx_ring_cnt; ++i)
1f7e3916
SZ		 1266 igb_free_rx_ring(&sc->rx_rings[i]);
1267}
1268
1269static void
1270igb_reset(struct igb_softc *sc)
1271{
1272 struct ifnet *ifp = &sc->arpcom.ac_if;
1273 struct e1000_hw *hw = &sc->hw;
1274 struct e1000_fc_info *fc = &hw->fc;
1275 uint32_t pba = 0;
1276 uint16_t hwm;
1277
1278 /* Let the firmware know the OS is in control */
1279 igb_get_hw_control(sc);
1280
1281 /*
1282 * Packet Buffer Allocation (PBA)
1283 * Writing PBA sets the receive portion of the buffer
1284 * the remainder is used for the transmit buffer.
1285 */
1286 switch (hw->mac.type) {
1287 case e1000_82575:
1288 pba = E1000_PBA_32K;
1289 break;
1290
1291 case e1000_82576:
1292 case e1000_vfadapt:
1293 pba = E1000_READ_REG(hw, E1000_RXPBS);
1294 pba &= E1000_RXPBS_SIZE_MASK_82576;
1295 break;
1296
1297 case e1000_82580:
1298 case e1000_i350:
1299 case e1000_vfadapt_i350:
1300 pba = E1000_READ_REG(hw, E1000_RXPBS);
1301 pba = e1000_rxpbs_adjust_82580(pba);
1302 break;
1303 /* XXX pba = E1000_PBA_35K; */
1304
1305 default:
1306 break;
1307 }
1308
1309 /* Special needs in case of Jumbo frames */
1310 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1311 uint32_t tx_space, min_tx, min_rx;
1312
1313 pba = E1000_READ_REG(hw, E1000_PBA);
1314 tx_space = pba >> 16;
1315 pba &= 0xffff;
1316
1317 min_tx = (sc->max_frame_size +
1318 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1319 min_tx = roundup2(min_tx, 1024);
1320 min_tx >>= 10;
1321 min_rx = sc->max_frame_size;
1322 min_rx = roundup2(min_rx, 1024);
1323 min_rx >>= 10;
1324 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1325 pba = pba - (min_tx - tx_space);
1326 /*
1327 * if short on rx space, rx wins
1328 * and must trump tx adjustment
1329 */
1330 if (pba < min_rx)
1331 pba = min_rx;
1332 }
1333 E1000_WRITE_REG(hw, E1000_PBA, pba);
1334 }
1335
1336 /*
1337 * These parameters control the automatic generation (Tx) and
1338 * response (Rx) to Ethernet PAUSE frames.
1339 * - High water mark should allow for at least two frames to be
1340 * received after sending an XOFF.
1341 * - Low water mark works best when it is very near the high water mark.
1342 * This allows the receiver to restart by sending XON when it has
1343 * drained a bit.
1344 */
1345 hwm = min(((pba << 10) * 9 / 10),
1346 ((pba << 10) - 2 * sc->max_frame_size));
1347
1348 if (hw->mac.type < e1000_82576) {
1349 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1350 fc->low_water = fc->high_water - 8;
1351 } else {
1352 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1353 fc->low_water = fc->high_water - 16;
1354 }
1355 fc->pause_time = IGB_FC_PAUSE_TIME;
1356 fc->send_xon = TRUE;
1357
1358 /* Issue a global reset */
1359 e1000_reset_hw(hw);
1360 E1000_WRITE_REG(hw, E1000_WUC, 0);
1361
1362 if (e1000_init_hw(hw) < 0)
1363 if_printf(ifp, "Hardware Initialization Failed\n");
1364
1365 /* Setup DMA Coalescing */
1366 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1367 uint32_t reg;
1368
1369 hwm = (pba - 4) << 10;
1370 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1371 & E1000_DMACR_DMACTHR_MASK;
1372
1373 /* transition to L0x or L1 if available..*/
1374 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1375
1376 /* timer = +-1000 usec in 32usec intervals */
1377 reg |= (1000 >> 5);
1378 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1379
1380 /* No lower threshold */
1381 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1382
1383 /* set hwm to PBA - 2 * max frame size */
1384 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1385
1386 /* Set the interval before transition */
1387 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1388 reg |= 0x800000FF; /* 255 usec */
1389 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1390
1391 /* free space in tx packet buffer to wake from DMA coal */
1392 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1393 (20480 - (2 * sc->max_frame_size)) >> 6);
1394
1395 /* make low power state decision controlled by DMA coal */
1396 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1397 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1398 reg | E1000_PCIEMISC_LX_DECISION);
1399 if_printf(ifp, "DMA Coalescing enabled\n");
1400 }
1401
1402 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1403 e1000_get_phy_info(hw);
1404 e1000_check_for_link(hw);
1405}
1406
1407static void
1408igb_setup_ifp(struct igb_softc *sc)
1409{
1410 struct ifnet *ifp = &sc->arpcom.ac_if;
1411
1f7e3916
SZ		 1412 ifp->if_softc = sc;
1413 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
9c0ecdcc 1414 ifp->if_init = igb_init;
1f7e3916
SZ		 1415 ifp->if_ioctl = igb_ioctl;
1416 ifp->if_start = igb_start;
7d235eb5
SZ		 1417 ifp->if_serialize = igb_serialize;
1418 ifp->if_deserialize = igb_deserialize;
1419 ifp->if_tryserialize = igb_tryserialize;
1420#ifdef INVARIANTS
1421 ifp->if_serialize_assert = igb_serialize_assert;
1422#endif
d0f59cad
SZ		 1423#ifdef IFPOLL_ENABLE
1424 ifp->if_npoll = igb_npoll;
1f7e3916
SZ		 1425#endif
1426 ifp->if_watchdog = igb_watchdog;
1427
91b8700a 1428 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1f7e3916
SZ		 1429 ifq_set_ready(&ifp->if_snd);
1430
1431 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1432
1433 ifp->if_capabilities =
23f6ffe4 1434 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_TSO;
8d6600da
SZ		 1435 if (IGB_ENABLE_HWRSS(sc))
1436 ifp->if_capabilities |= IFCAP_RSS;
1f7e3916 1437 ifp->if_capenable = ifp->if_capabilities;
23f6ffe4 1438 ifp->if_hwassist = IGB_CSUM_FEATURES | CSUM_TSO;
1f7e3916
SZ		 1439
1440 /*
1441 * Tell the upper layer(s) we support long frames
1442 */
1443 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1444
1445 /*
1446 * Specify the media types supported by this adapter and register
1447 * callbacks to update media and link information
1448 */
1449 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1450 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1451 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1452 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1453 0, NULL);
1454 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1455 } else {
1456 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1457 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1458 0, NULL);
1459 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1460 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1461 0, NULL);
1462 if (sc->hw.phy.type != e1000_phy_ife) {
1463 ifmedia_add(&sc->media,
1464 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1465 ifmedia_add(&sc->media,
1466 IFM_ETHER | IFM_1000_T, 0, NULL);
1467 }
1468 }
1469 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1470 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1471}
1472
1473static void
1474igb_add_sysctl(struct igb_softc *sc)
1475{
9c0ecdcc 1476 char node[32];
8d6600da 1477 int i;
8d6600da 1478
1f7e3916
SZ		 1479 sysctl_ctx_init(&sc->sysctl_ctx);
1480 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1481 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1482 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1483 if (sc->sysctl_tree == NULL) {
1484 device_printf(sc->dev, "can't add sysctl node\n");
1485 return;
1486 }
1487
1488 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
8d6600da
SZ		 1489 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
1490 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
be922da6
SZ		 1491 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1492 "# of RX rings used");
1493 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
8d6600da
SZ		 1494 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1495 "# of RX descs");
1f7e3916 1496 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
8d6600da
SZ		 1497 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1498 "# of TX descs");
1f7e3916 1499
9c0ecdcc
SZ		 1500 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
1501 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1502 SYSCTL_CHILDREN(sc->sysctl_tree),
1503 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1504 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1505 } else {
1506 for (i = 0; i < sc->msix_cnt; ++i) {
1507 struct igb_msix_data *msix = &sc->msix_data[i];
1508
1509 ksnprintf(node, sizeof(node), "msix%d_rate", i);
1510 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1511 SYSCTL_CHILDREN(sc->sysctl_tree),
1512 OID_AUTO, node, CTLTYPE_INT | CTLFLAG_RW,
1513 msix, 0, igb_sysctl_msix_rate, "I",
1514 msix->msix_rate_desc);
1515 }
1516 }
b6220144
SZ		 1517
1518 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1519 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1520 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
8d6600da
SZ		 1521 "# of segments per TX interrupt");
1522
d0f59cad
SZ		 1523#ifdef IFPOLL_ENABLE
1524 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1525 OID_AUTO, "npoll_rxoff", CTLTYPE_INT|CTLFLAG_RW,
1526 sc, 0, igb_sysctl_npoll_rxoff, "I", "NPOLLING RX cpu offset");
1527 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1528 OID_AUTO, "npoll_txoff", CTLTYPE_INT|CTLFLAG_RW,
1529 sc, 0, igb_sysctl_npoll_txoff, "I", "NPOLLING TX cpu offset");
1530#endif
1531
8d6600da
SZ		 1532#ifdef IGB_RSS_DEBUG
1533 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1534 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1535 "RSS debug level");
1536 for (i = 0; i < sc->rx_ring_cnt; ++i) {
9c0ecdcc 1537 ksnprintf(node, sizeof(node), "rx%d_pkt", i);
8d6600da 1538 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
9c0ecdcc 1539 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
8d6600da
SZ		 1540 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1541 }
1542#endif
1f7e3916
SZ		 1543}
1544
1545static int
a619b256 1546igb_alloc_rings(struct igb_softc *sc)
1f7e3916
SZ		 1547{
1548 int error, i;
1549
1f7e3916
SZ		 1550 /*
1551 * Create top level busdma tag
1552 */
1553 error = bus_dma_tag_create(NULL, 1, 0,
1554 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1555 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1556 &sc->parent_tag);
1557 if (error) {
1558 device_printf(sc->dev, "could not create top level DMA tag\n");
1559 return error;
1560 }
1561
1562 /*
1563 * Allocate TX descriptor rings and buffers
1564 */
27866bf1 1565 sc->tx_rings = kmalloc(sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1f7e3916 1566 M_DEVBUF, M_WAITOK | M_ZERO);
27866bf1 1567 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1f7e3916
SZ		 1568 struct igb_tx_ring *txr = &sc->tx_rings[i];
1569
1570 /* Set up some basics */
1571 txr->sc = sc;
1572 txr->me = i;
7d235eb5 1573 lwkt_serialize_init(&txr->tx_serialize);
1f7e3916
SZ		 1574
1575 error = igb_create_tx_ring(txr);
1576 if (error)
1577 return error;
1578 }
1579
1580 /*
1581 * Allocate RX descriptor rings and buffers
1582 */
27866bf1 1583 sc->rx_rings = kmalloc(sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1f7e3916 1584 M_DEVBUF, M_WAITOK | M_ZERO);
27866bf1 1585 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1f7e3916
SZ		 1586 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1587
1588 /* Set up some basics */
1589 rxr->sc = sc;
1590 rxr->me = i;
7d235eb5 1591 lwkt_serialize_init(&rxr->rx_serialize);
1f7e3916
SZ		 1592
1593 error = igb_create_rx_ring(rxr);
1594 if (error)
1595 return error;
1596 }
1597
1f7e3916
SZ		 1598 return 0;
1599}
1600
1601static void
a619b256 1602igb_free_rings(struct igb_softc *sc)
1f7e3916
SZ		 1603{
1604 int i;
1605
1f7e3916 1606 if (sc->tx_rings != NULL) {
91b8700a
SZ		 1607 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1608 struct igb_tx_ring *txr = &sc->tx_rings[i];
1609
1610 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1611 }
1f7e3916
SZ		 1612 kfree(sc->tx_rings, M_DEVBUF);
1613 }
1614
1615 if (sc->rx_rings != NULL) {
91b8700a
SZ		 1616 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1617 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1618
1619 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1620 }
1f7e3916
SZ		 1621 kfree(sc->rx_rings, M_DEVBUF);
1622 }
1623}
1624
1625static int
1626igb_create_tx_ring(struct igb_tx_ring *txr)
1627{
1628 int tsize, error, i;
1629
1630 /*
1631 * Validate number of transmit descriptors. It must not exceed
1632 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1633 */
1634 if (((igb_txd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN) != 0 ||
1635 (igb_txd > IGB_MAX_TXD) || (igb_txd < IGB_MIN_TXD)) {
1636 device_printf(txr->sc->dev,
1637 "Using %d TX descriptors instead of %d!\n",
1638 IGB_DEFAULT_TXD, igb_txd);
91b8700a 1639 txr->num_tx_desc = IGB_DEFAULT_TXD;
1f7e3916 1640 } else {
91b8700a 1641 txr->num_tx_desc = igb_txd;
1f7e3916
SZ		 1642 }
1643
1644 /*
1645 * Allocate TX descriptor ring
1646 */
91b8700a 1647 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1f7e3916
SZ		 1648 IGB_DBA_ALIGN);
1649 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1650 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1651 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1652 if (txr->txdma.dma_vaddr == NULL) {
1653 device_printf(txr->sc->dev,
1654 "Unable to allocate TX Descriptor memory\n");
1655 return ENOMEM;
1656 }
1657 txr->tx_base = txr->txdma.dma_vaddr;
1658 bzero(txr->tx_base, tsize);
1659
91b8700a 1660 txr->tx_buf = kmalloc(sizeof(struct igb_tx_buf) * txr->num_tx_desc,
1f7e3916
SZ		 1661 M_DEVBUF, M_WAITOK | M_ZERO);
1662
1663 /*
b6220144
SZ		 1664 * Allocate TX head write-back buffer
1665 */
1666 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1667 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1668 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1669 if (txr->tx_hdr == NULL) {
1670 device_printf(txr->sc->dev,
1671 "Unable to allocate TX head write-back buffer\n");
1672 return ENOMEM;
1673 }
1674
1675 /*
1f7e3916
SZ		 1676 * Create DMA tag for TX buffers
1677 */
1678 error = bus_dma_tag_create(txr->sc->parent_tag,
1679 1, 0, /* alignment, bounds */
1680 BUS_SPACE_MAXADDR, /* lowaddr */
1681 BUS_SPACE_MAXADDR, /* highaddr */
1682 NULL, NULL, /* filter, filterarg */
1683 IGB_TSO_SIZE, /* maxsize */
1684 IGB_MAX_SCATTER, /* nsegments */
1685 PAGE_SIZE, /* maxsegsize */
1686 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1687 BUS_DMA_ONEBPAGE, /* flags */
1688 &txr->tx_tag);
1689 if (error) {
1690 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1691 kfree(txr->tx_buf, M_DEVBUF);
1692 txr->tx_buf = NULL;
1693 return error;
1694 }
1695
1696 /*
1697 * Create DMA maps for TX buffers
1698 */
91b8700a 1699 for (i = 0; i < txr->num_tx_desc; ++i) {
1f7e3916
SZ		 1700 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1701
1702 error = bus_dmamap_create(txr->tx_tag,
1703 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1704 if (error) {
1705 device_printf(txr->sc->dev,
1706 "Unable to create TX DMA map\n");
1707 igb_destroy_tx_ring(txr, i);
1708 return error;
1709 }
1710 }
b6220144
SZ		 1711
1712 /*
1713 * Initialize various watermark
1714 */
1715 txr->spare_desc = IGB_TX_SPARE;
91b8700a
SZ		 1716 txr->intr_nsegs = txr->num_tx_desc / 16;
1717 txr->oact_hi_desc = txr->num_tx_desc / 2;
1718 txr->oact_lo_desc = txr->num_tx_desc / 8;
b6220144
SZ		 1719 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1720 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1721 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1722 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1723
1f7e3916
SZ		 1724 return 0;
1725}
1726
1727static void
1728igb_free_tx_ring(struct igb_tx_ring *txr)
1729{
1730 int i;
1731
91b8700a 1732 for (i = 0; i < txr->num_tx_desc; ++i) {
1f7e3916
SZ		 1733 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1734
1735 if (txbuf->m_head != NULL) {
1736 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1737 m_freem(txbuf->m_head);
1738 txbuf->m_head = NULL;
1739 }
1740 }
1741}
1742
1743static void
1744igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1745{
1746 int i;
1747
1748 if (txr->txdma.dma_vaddr != NULL) {
1749 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1750 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1751 txr->txdma.dma_map);
1752 bus_dma_tag_destroy(txr->txdma.dma_tag);
1753 txr->txdma.dma_vaddr = NULL;
1754 }
1755
b6220144
SZ		 1756 if (txr->tx_hdr != NULL) {
1757 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1758 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1759 txr->tx_hdr_dmap);
1760 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1761 txr->tx_hdr = NULL;
1762 }
1763
1f7e3916
SZ		 1764 if (txr->tx_buf == NULL)
1765 return;
1766
1767 for (i = 0; i < ndesc; ++i) {
1768 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1769
1770 KKASSERT(txbuf->m_head == NULL);
1771 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1772 }
1773 bus_dma_tag_destroy(txr->tx_tag);
1774
1775 kfree(txr->tx_buf, M_DEVBUF);
1776 txr->tx_buf = NULL;
1777}
1778
1779static void
1780igb_init_tx_ring(struct igb_tx_ring *txr)
1781{
1f7e3916
SZ		 1782 /* Clear the old descriptor contents */
1783 bzero(txr->tx_base,
91b8700a 1784 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1f7e3916 1785
b6220144
SZ		 1786 /* Clear TX head write-back buffer */
1787 *(txr->tx_hdr) = 0;
1788
1f7e3916
SZ		 1789 /* Reset indices */
1790 txr->next_avail_desc = 0;
1791 txr->next_to_clean = 0;
b6220144 1792 txr->tx_nsegs = 0;
1f7e3916
SZ		 1793
1794 /* Set number of descriptors available */
91b8700a 1795 txr->tx_avail = txr->num_tx_desc;
1f7e3916
SZ		 1796}
1797
1798static void
1799igb_init_tx_unit(struct igb_softc *sc)
1800{
1801 struct e1000_hw *hw = &sc->hw;
1802 uint32_t tctl;
1803 int i;
1804
1805 /* Setup the Tx Descriptor Rings */
27866bf1 1806 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1f7e3916
SZ		 1807 struct igb_tx_ring *txr = &sc->tx_rings[i];
1808 uint64_t bus_addr = txr->txdma.dma_paddr;
c3162c4e 1809 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1f7e3916 1810 uint32_t txdctl = 0;
b6220144 1811 uint32_t dca_txctrl;
1f7e3916
SZ		 1812
1813 E1000_WRITE_REG(hw, E1000_TDLEN(i),
91b8700a 1814 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1f7e3916
SZ		 1815 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1816 (uint32_t)(bus_addr >> 32));
1817 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1818 (uint32_t)bus_addr);
1819
1820 /* Setup the HW Tx Head and Tail descriptor pointers */
1821 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1822 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1823
54691ff1
SZ		 1824 /*
1825 * WTHRESH is ignored by the hardware, since header
1826 * write back mode is used.
1827 */
1f7e3916
SZ		 1828 txdctl |= IGB_TX_PTHRESH;
1829 txdctl |= IGB_TX_HTHRESH << 8;
1830 txdctl |= IGB_TX_WTHRESH << 16;
1831 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1832 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
b6220144
SZ		 1833
1834 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1835 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1836 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1837
54691ff1
SZ		 1838 /*
1839 * Don't set WB_on_EITR:
1840 * - 82575 does not have it
1841 * - It almost has no effect on 82576, see:
1842 * 82576 specification update errata #26
1843 * - It causes unnecessary bus traffic
1844 */
b6220144 1845 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
c3162c4e 1846 (uint32_t)(hdr_paddr >> 32));
b6220144 1847 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
c3162c4e 1848 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1f7e3916
SZ		 1849 }
1850
1851 if (sc->vf_ifp)
1852 return;
1853
1854 e1000_config_collision_dist(hw);
1855
1856 /* Program the Transmit Control Register */
1857 tctl = E1000_READ_REG(hw, E1000_TCTL);
1858 tctl &= ~E1000_TCTL_CT;
1859 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1860 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1861
1862 /* This write will effectively turn on the transmit unit. */
1863 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1864}
1865
1866static boolean_t
48faa653 1867igb_txcsum_ctx(struct igb_tx_ring *txr, struct mbuf *mp)
1f7e3916
SZ		 1868{
1869 struct e1000_adv_tx_context_desc *TXD;
1f7e3916 1870 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1f7e3916 1871 int ehdrlen, ctxd, ip_hlen = 0;
1f7e3916
SZ		 1872 boolean_t offload = TRUE;
1873
1874 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1875 offload = FALSE;
1876
1877 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
48faa653 1878
1f7e3916 1879 ctxd = txr->next_avail_desc;
1f7e3916
SZ		 1880 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1881
1882 /*
1883 * In advanced descriptors the vlan tag must
1884 * be placed into the context descriptor, thus
1885 * we need to be here just for that setup.
1886 */
1887 if (mp->m_flags & M_VLANTAG) {
23f6ffe4
SZ		 1888 uint16_t vlantag;
1889
1f7e3916
SZ		 1890 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1891 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1892 } else if (!offload) {
1893 return FALSE;
1894 }
1895
48faa653
SZ		 1896 ehdrlen = mp->m_pkthdr.csum_lhlen;
1897 KASSERT(ehdrlen > 0, ("invalid ether hlen"));
1f7e3916
SZ		 1898
1899 /* Set the ether header length */
1900 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
48faa653
SZ		 1901 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
1902 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1903 ip_hlen = mp->m_pkthdr.csum_iphlen;
1904 KASSERT(ip_hlen > 0, ("invalid ip hlen"));
1f7e3916 1905 }
1f7e3916 1906 vlan_macip_lens |= ip_hlen;
1f7e3916 1907
23f6ffe4 1908 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1f7e3916
SZ		 1909 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1910 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1911 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1912 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1913
1914 /* 82575 needs the queue index added */
1915 if (txr->sc->hw.mac.type == e1000_82575)
1916 mss_l4len_idx = txr->me << 4;
1917
1918 /* Now copy bits into descriptor */
1919 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
1920 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
1921 TXD->seqnum_seed = htole32(0);
1922 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
1923
1f7e3916 1924 /* We've consumed the first desc, adjust counters */
91b8700a 1925 if (++ctxd == txr->num_tx_desc)
1f7e3916
SZ		 1926 ctxd = 0;
1927 txr->next_avail_desc = ctxd;
1928 --txr->tx_avail;
1929
1930 return offload;
1931}
1932
1933static void
1934igb_txeof(struct igb_tx_ring *txr)
1935{
1936 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
b6220144 1937 int first, hdr, avail;
1f7e3916 1938
91b8700a 1939 if (txr->tx_avail == txr->num_tx_desc)
1f7e3916
SZ		 1940 return;
1941
1942 first = txr->next_to_clean;
b6220144 1943 hdr = *(txr->tx_hdr);
1f7e3916 1944
b6220144
SZ		 1945 if (first == hdr)
1946 return;
1f7e3916 1947
b6220144
SZ		 1948 avail = txr->tx_avail;
1949 while (first != hdr) {
1950 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
1f7e3916 1951
b6220144
SZ		 1952 ++avail;
1953 if (txbuf->m_head) {
1954 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1955 m_freem(txbuf->m_head);
1956 txbuf->m_head = NULL;
1957 ++ifp->if_opackets;
1f7e3916 1958 }
91b8700a 1959 if (++first == txr->num_tx_desc)
b6220144 1960 first = 0;
1f7e3916
SZ		 1961 }
1962 txr->next_to_clean = first;
b6220144 1963 txr->tx_avail = avail;
1f7e3916
SZ		 1964
1965 /*
1966 * If we have a minimum free, clear IFF_OACTIVE
1967 * to tell the stack that it is OK to send packets.
1968 */
b6220144 1969 if (IGB_IS_NOT_OACTIVE(txr)) {
1f7e3916
SZ		 1970 ifp->if_flags &= ~IFF_OACTIVE;
1971
1f7e3916
SZ		 1972 /*
1973 * We have enough TX descriptors, turn off
b6220144
SZ		 1974 * the watchdog. We allow small amount of
1975 * packets (roughly intr_nsegs) pending on
1976 * the transmit ring.
1f7e3916
SZ		 1977 */
1978 ifp->if_timer = 0;
1f7e3916
SZ		 1979 }
1980}
1981
1982static int
1983igb_create_rx_ring(struct igb_rx_ring *rxr)
1984{
1985 int rsize, i, error;
1986
1987 /*
1988 * Validate number of receive descriptors. It must not exceed
1989 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1990 */
1991 if (((igb_rxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN) != 0 ||
1992 (igb_rxd > IGB_MAX_RXD) || (igb_rxd < IGB_MIN_RXD)) {
1993 device_printf(rxr->sc->dev,
1994 "Using %d RX descriptors instead of %d!\n",
1995 IGB_DEFAULT_RXD, igb_rxd);
91b8700a 1996 rxr->num_rx_desc = IGB_DEFAULT_RXD;
1f7e3916 1997 } else {
91b8700a 1998 rxr->num_rx_desc = igb_rxd;
1f7e3916
SZ		 1999 }
2000
2001 /*
2002 * Allocate RX descriptor ring
2003 */
91b8700a 2004 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
1f7e3916
SZ		 2005 IGB_DBA_ALIGN);
2006 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
2007 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
2008 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
2009 &rxr->rxdma.dma_paddr);
2010 if (rxr->rxdma.dma_vaddr == NULL) {
2011 device_printf(rxr->sc->dev,
2012 "Unable to allocate RxDescriptor memory\n");
2013 return ENOMEM;
2014 }
2015 rxr->rx_base = rxr->rxdma.dma_vaddr;
2016 bzero(rxr->rx_base, rsize);
2017
91b8700a 2018 rxr->rx_buf = kmalloc(sizeof(struct igb_rx_buf) * rxr->num_rx_desc,
1f7e3916
SZ		 2019 M_DEVBUF, M_WAITOK | M_ZERO);
2020
2021 /*
2022 * Create DMA tag for RX buffers
2023 */
2024 error = bus_dma_tag_create(rxr->sc->parent_tag,
2025 1, 0, /* alignment, bounds */
2026 BUS_SPACE_MAXADDR, /* lowaddr */
2027 BUS_SPACE_MAXADDR, /* highaddr */
2028 NULL, NULL, /* filter, filterarg */
2029 MCLBYTES, /* maxsize */
2030 1, /* nsegments */
2031 MCLBYTES, /* maxsegsize */
2032 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2033 &rxr->rx_tag);
2034 if (error) {
2035 device_printf(rxr->sc->dev,
2036 "Unable to create RX payload DMA tag\n");
2037 kfree(rxr->rx_buf, M_DEVBUF);
2038 rxr->rx_buf = NULL;
2039 return error;
2040 }
2041
2042 /*
2043 * Create spare DMA map for RX buffers
2044 */
2045 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2046 &rxr->rx_sparemap);
2047 if (error) {
2048 device_printf(rxr->sc->dev,
2049 "Unable to create spare RX DMA maps\n");
2050 bus_dma_tag_destroy(rxr->rx_tag);
2051 kfree(rxr->rx_buf, M_DEVBUF);
2052 rxr->rx_buf = NULL;
2053 return error;
2054 }
2055
2056 /*
2057 * Create DMA maps for RX buffers
2058 */
91b8700a 2059 for (i = 0; i < rxr->num_rx_desc; i++) {
1f7e3916
SZ		 2060 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2061
2062 error = bus_dmamap_create(rxr->rx_tag,
2063 BUS_DMA_WAITOK, &rxbuf->map);
2064 if (error) {
2065 device_printf(rxr->sc->dev,
2066 "Unable to create RX DMA maps\n");
2067 igb_destroy_rx_ring(rxr, i);
2068 return error;
2069 }
2070 }
2071 return 0;
2072}
2073
2074static void
2075igb_free_rx_ring(struct igb_rx_ring *rxr)
2076{
2077 int i;
2078
91b8700a 2079 for (i = 0; i < rxr->num_rx_desc; ++i) {
1f7e3916
SZ		 2080 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2081
2082 if (rxbuf->m_head != NULL) {
2083 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2084 m_freem(rxbuf->m_head);
2085 rxbuf->m_head = NULL;
2086 }
2087 }
2088
2089 if (rxr->fmp != NULL)
2090 m_freem(rxr->fmp);
2091 rxr->fmp = NULL;
2092 rxr->lmp = NULL;
2093}
2094
2095static void
2096igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2097{
2098 int i;
2099
2100 if (rxr->rxdma.dma_vaddr != NULL) {
2101 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2102 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2103 rxr->rxdma.dma_map);
2104 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2105 rxr->rxdma.dma_vaddr = NULL;
2106 }
2107
2108 if (rxr->rx_buf == NULL)
2109 return;
2110
2111 for (i = 0; i < ndesc; ++i) {
2112 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2113
2114 KKASSERT(rxbuf->m_head == NULL);
2115 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2116 }
2117 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2118 bus_dma_tag_destroy(rxr->rx_tag);
2119
2120 kfree(rxr->rx_buf, M_DEVBUF);
2121 rxr->rx_buf = NULL;
2122}
2123
2124static void
2125igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2126{
2127 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2128 rxd->wb.upper.status_error = 0;
2129}
2130
2131static int
2132igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2133{
2134 struct mbuf *m;
2135 bus_dma_segment_t seg;
2136 bus_dmamap_t map;
2137 struct igb_rx_buf *rxbuf;
2138 int error, nseg;
2139
2140 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2141 if (m == NULL) {
2142 if (wait) {
2143 if_printf(&rxr->sc->arpcom.ac_if,
2144 "Unable to allocate RX mbuf\n");
2145 }
2146 return ENOBUFS;
2147 }
2148 m->m_len = m->m_pkthdr.len = MCLBYTES;
2149
2150 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2151 m_adj(m, ETHER_ALIGN);
2152
2153 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2154 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2155 if (error) {
2156 m_freem(m);
2157 if (wait) {
2158 if_printf(&rxr->sc->arpcom.ac_if,
2159 "Unable to load RX mbuf\n");
2160 }
2161 return error;
2162 }
2163
2164 rxbuf = &rxr->rx_buf[i];
2165 if (rxbuf->m_head != NULL)
2166 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2167
2168 map = rxbuf->map;
2169 rxbuf->map = rxr->rx_sparemap;
2170 rxr->rx_sparemap = map;
2171
2172 rxbuf->m_head = m;
2173 rxbuf->paddr = seg.ds_addr;
2174
2175 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2176 return 0;
2177}
2178
2179static int
2180igb_init_rx_ring(struct igb_rx_ring *rxr)
2181{
2182 int i;
2183
2184 /* Clear the ring contents */
2185 bzero(rxr->rx_base,
91b8700a 2186 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
1f7e3916
SZ		 2187
2188 /* Now replenish the ring mbufs */
91b8700a 2189 for (i = 0; i < rxr->num_rx_desc; ++i) {
1f7e3916
SZ		 2190 int error;
2191
2192 error = igb_newbuf(rxr, i, TRUE);
2193 if (error)
2194 return error;
2195 }
2196
2197 /* Setup our descriptor indices */
2198 rxr->next_to_check = 0;
2199
2200 rxr->fmp = NULL;
2201 rxr->lmp = NULL;
2202 rxr->discard = FALSE;
2203
2204 return 0;
2205}
2206
2207static void
2208igb_init_rx_unit(struct igb_softc *sc)
2209{
2210 struct ifnet *ifp = &sc->arpcom.ac_if;
2211 struct e1000_hw *hw = &sc->hw;
2212 uint32_t rctl, rxcsum, srrctl = 0;
2213 int i;
2214
2215 /*
2216 * Make sure receives are disabled while setting
2217 * up the descriptor ring
2218 */
2219 rctl = E1000_READ_REG(hw, E1000_RCTL);
2220 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2221
2222#if 0
2223 /*
2224 ** Set up for header split
2225 */
2226 if (igb_header_split) {
2227 /* Use a standard mbuf for the header */
2228 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2229 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2230 } else
2231#endif
2232 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2233
2234 /*
2235 ** Set up for jumbo frames
2236 */
2237 if (ifp->if_mtu > ETHERMTU) {
2238 rctl |= E1000_RCTL_LPE;
2239#if 0
2240 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2241 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2242 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2243 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2244 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2245 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2246 }
2247 /* Set maximum packet len */
2248 psize = adapter->max_frame_size;
2249 /* are we on a vlan? */
2250 if (adapter->ifp->if_vlantrunk != NULL)
2251 psize += VLAN_TAG_SIZE;
2252 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2253#else
2254 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2255 rctl |= E1000_RCTL_SZ_2048;
2256#endif
2257 } else {
2258 rctl &= ~E1000_RCTL_LPE;
2259 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2260 rctl |= E1000_RCTL_SZ_2048;
2261 }
2262
2263 /* Setup the Base and Length of the Rx Descriptor Rings */
be922da6 2264 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 2265 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2266 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2267 uint32_t rxdctl;
2268
2269 E1000_WRITE_REG(hw, E1000_RDLEN(i),
91b8700a 2270 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
1f7e3916
SZ		 2271 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2272 (uint32_t)(bus_addr >> 32));
2273 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2274 (uint32_t)bus_addr);
2275 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2276 /* Enable this Queue */
2277 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2278 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2279 rxdctl &= 0xFFF00000;
2280 rxdctl |= IGB_RX_PTHRESH;
2281 rxdctl |= IGB_RX_HTHRESH << 8;
54691ff1
SZ		 2282 /*
2283 * Don't set WTHRESH to a value above 1 on 82576, see:
2284 * 82576 specification update errata #26
2285 */
1f7e3916
SZ		 2286 rxdctl |= IGB_RX_WTHRESH << 16;
2287 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2288 }
2289
8d6600da
SZ		 2290 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2291 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2292
1f7e3916 2293 /*
8d6600da
SZ		 2294 * Receive Checksum Offload for TCP and UDP
2295 *
2296 * Checksum offloading is also enabled if multiple receive
2297 * queue is to be supported, since we need it to figure out
2298 * fragments.
1f7e3916 2299 */
8d6600da
SZ		 2300 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2301 /*
2302 * NOTE:
2303 * PCSD must be enabled to enable multiple
2304 * receive queues.
2305 */
2306 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2307 E1000_RXCSUM_PCSD;
2308 } else {
2309 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2310 E1000_RXCSUM_PCSD);
2311 }
2312 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2313
2314 if (IGB_ENABLE_HWRSS(sc)) {
2315 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
d1218435
SZ		 2316 uint32_t reta_shift;
2317 int j, r;
8d6600da
SZ		 2318
2319 /*
2320 * NOTE:
2321 * When we reach here, RSS has already been disabled
2322 * in igb_stop(), so we could safely configure RSS key
2323 * and redirect table.
2324 */
2325
2326 /*
2327 * Configure RSS key
2328 */
2329 toeplitz_get_key(key, sizeof(key));
2330 for (i = 0; i < IGB_NRSSRK; ++i) {
2331 uint32_t rssrk;
2332
2333 rssrk = IGB_RSSRK_VAL(key, i);
2334 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2335
2336 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
1f7e3916 2337 }
1f7e3916
SZ		 2338
2339 /*
8d6600da
SZ		 2340 * Configure RSS redirect table in following fashion:
2341 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2342 */
2343 reta_shift = IGB_RETA_SHIFT;
2344 if (hw->mac.type == e1000_82575)
2345 reta_shift = IGB_RETA_SHIFT_82575;
8d6600da 2346
d1218435
SZ		 2347 r = 0;
2348 for (j = 0; j < IGB_NRETA; ++j) {
2349 uint32_t reta = 0;
8d6600da 2350
d1218435
SZ		 2351 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2352 uint32_t q;
2353
be922da6 2354 q = (r % sc->rx_ring_inuse) << reta_shift;
d1218435
SZ		 2355 reta |= q << (8 * i);
2356 ++r;
2357 }
2358 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2359 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2360 }
8d6600da
SZ		 2361
2362 /*
2363 * Enable multiple receive queues.
2364 * Enable IPv4 RSS standard hash functions.
2365 * Disable RSS interrupt on 82575
2366 */
2367 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2368 E1000_MRQC_ENABLE_RSS_4Q |
2369 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2370 E1000_MRQC_RSS_FIELD_IPV4);
1f7e3916 2371 }
1f7e3916
SZ		 2372
2373 /* Setup the Receive Control Register */
2374 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2375 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2376 E1000_RCTL_RDMTS_HALF |
2377 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2378 /* Strip CRC bytes. */
2379 rctl |= E1000_RCTL_SECRC;
2380 /* Make sure VLAN Filters are off */
2381 rctl &= ~E1000_RCTL_VFE;
2382 /* Don't store bad packets */
2383 rctl &= ~E1000_RCTL_SBP;
2384
2385 /* Enable Receives */
2386 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2387
2388 /*
2389 * Setup the HW Rx Head and Tail Descriptor Pointers
2390 * - needs to be after enable
2391 */
be922da6 2392 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 2393 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2394
2395 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
91b8700a 2396 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
1f7e3916
SZ		 2397 }
2398}
2399
2400static void
2401igb_rxeof(struct igb_rx_ring *rxr, int count)
2402{
2403 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2404 union e1000_adv_rx_desc *cur;
2405 uint32_t staterr;
2406 int i;
2407
2408 i = rxr->next_to_check;
2409 cur = &rxr->rx_base[i];
2410 staterr = le32toh(cur->wb.upper.status_error);
2411
2412 if ((staterr & E1000_RXD_STAT_DD) == 0)
2413 return;
2414
2415 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
8d6600da 2416 struct pktinfo *pi = NULL, pi0;
1f7e3916
SZ		 2417 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2418 struct mbuf *m = NULL;
2419 boolean_t eop;
2420
2421 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2422 if (eop)
2423 --count;
2424
2425 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2426 !rxr->discard) {
2427 struct mbuf *mp = rxbuf->m_head;
8d6600da 2428 uint32_t hash, hashtype;
1f7e3916
SZ		 2429 uint16_t vlan;
2430 int len;
2431
2432 len = le16toh(cur->wb.upper.length);
2433 if (rxr->sc->hw.mac.type == e1000_i350 &&
2434 (staterr & E1000_RXDEXT_STATERR_LB))
2435 vlan = be16toh(cur->wb.upper.vlan);
2436 else
2437 vlan = le16toh(cur->wb.upper.vlan);
2438
8d6600da
SZ		 2439 hash = le32toh(cur->wb.lower.hi_dword.rss);
2440 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2441 E1000_RXDADV_RSSTYPE_MASK;
2442
2443 IGB_RSS_DPRINTF(rxr->sc, 10,
2444 "ring%d, hash 0x%08x, hashtype %u\n",
2445 rxr->me, hash, hashtype);
2446
1f7e3916
SZ		 2447 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2448 BUS_DMASYNC_POSTREAD);
2449
2450 if (igb_newbuf(rxr, i, FALSE) != 0) {
2451 ifp->if_iqdrops++;
2452 goto discard;
2453 }
2454
2455 mp->m_len = len;
2456 if (rxr->fmp == NULL) {
2457 mp->m_pkthdr.len = len;
2458 rxr->fmp = mp;
2459 rxr->lmp = mp;
2460 } else {
2461 rxr->lmp->m_next = mp;
2462 rxr->lmp = rxr->lmp->m_next;
2463 rxr->fmp->m_pkthdr.len += len;
2464 }
2465
2466 if (eop) {
2467 m = rxr->fmp;
2468 rxr->fmp = NULL;
2469 rxr->lmp = NULL;
2470
2471 m->m_pkthdr.rcvif = ifp;
2472 ifp->if_ipackets++;
2473
2474 if (ifp->if_capenable & IFCAP_RXCSUM)
2475 igb_rxcsum(staterr, m);
2476
2477 if (staterr & E1000_RXD_STAT_VP) {
2478 m->m_pkthdr.ether_vlantag = vlan;
2479 m->m_flags |= M_VLANTAG;
2480 }
2481
1f7e3916 2482 if (ifp->if_capenable & IFCAP_RSS) {
8d6600da
SZ		 2483 pi = igb_rssinfo(m, &pi0,
2484 hash, hashtype, staterr);
1f7e3916 2485 }
8d6600da
SZ		 2486#ifdef IGB_RSS_DEBUG
2487 rxr->rx_packets++;
1f7e3916
SZ		 2488#endif
2489 }
2490 } else {
2491 ifp->if_ierrors++;
2492discard:
2493 igb_setup_rxdesc(cur, rxbuf);
2494 if (!eop)
2495 rxr->discard = TRUE;
2496 else
2497 rxr->discard = FALSE;
2498 if (rxr->fmp != NULL) {
2499 m_freem(rxr->fmp);
2500 rxr->fmp = NULL;
2501 rxr->lmp = NULL;
2502 }
2503 m = NULL;
2504 }
2505
2506 if (m != NULL)
8d6600da 2507 ether_input_pkt(ifp, m, pi);
1f7e3916
SZ		 2508
2509 /* Advance our pointers to the next descriptor. */
91b8700a 2510 if (++i == rxr->num_rx_desc)
1f7e3916
SZ		 2511 i = 0;
2512
2513 cur = &rxr->rx_base[i];
2514 staterr = le32toh(cur->wb.upper.status_error);
2515 }
2516 rxr->next_to_check = i;
2517
2518 if (--i < 0)
91b8700a 2519 i = rxr->num_rx_desc - 1;
1f7e3916
SZ		 2520 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2521}
2522
2523
2524static void
2525igb_set_vlan(struct igb_softc *sc)
2526{
2527 struct e1000_hw *hw = &sc->hw;
2528 uint32_t reg;
2529#if 0
2530 struct ifnet *ifp = sc->arpcom.ac_if;
2531#endif
2532
2533 if (sc->vf_ifp) {
2534 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2535 return;
2536 }
2537
2538 reg = E1000_READ_REG(hw, E1000_CTRL);
2539 reg |= E1000_CTRL_VME;
2540 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2541
2542#if 0
2543 /* Enable the Filter Table */
2544 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2545 reg = E1000_READ_REG(hw, E1000_RCTL);
2546 reg &= ~E1000_RCTL_CFIEN;
2547 reg |= E1000_RCTL_VFE;
2548 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2549 }
2550#endif
2551
2552 /* Update the frame size */
2553 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2554 sc->max_frame_size + VLAN_TAG_SIZE);
2555
2556#if 0
2557 /* Don't bother with table if no vlans */
2558 if ((adapter->num_vlans == 0) ||
2559 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2560 return;
2561 /*
2562 ** A soft reset zero's out the VFTA, so
2563 ** we need to repopulate it now.
2564 */
2565 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2566 if (adapter->shadow_vfta[i] != 0) {
2567 if (adapter->vf_ifp)
2568 e1000_vfta_set_vf(hw,
2569 adapter->shadow_vfta[i], TRUE);
2570 else
2571 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2572 i, adapter->shadow_vfta[i]);
2573 }
2574#endif
2575}
2576
2577static void
2578igb_enable_intr(struct igb_softc *sc)
2579{
9c0ecdcc
SZ		 2580 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2581 lwkt_serialize_handler_enable(&sc->main_serialize);
2582 } else {
2583 int i;
2584
2585 for (i = 0; i < sc->msix_cnt; ++i) {
2586 lwkt_serialize_handler_enable(
2587 sc->msix_data[i].msix_serialize);
2588 }
2589 }
1f7e3916 2590
f6167a56 2591 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
9c0ecdcc
SZ		 2592 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
2593 E1000_WRITE_REG(&sc->hw, E1000_EIAC, sc->intr_mask);
2594 else
2595 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
f6167a56
SZ		 2596 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2597 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
1f7e3916
SZ		 2598 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2599 } else {
2600 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2601 }
2602 E1000_WRITE_FLUSH(&sc->hw);
2603}
2604
2605static void
2606igb_disable_intr(struct igb_softc *sc)
2607{
f6167a56 2608 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
1f7e3916
SZ		 2609 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2610 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
f6167a56 2611 }
1f7e3916
SZ		 2612 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2613 E1000_WRITE_FLUSH(&sc->hw);
2614
9c0ecdcc
SZ		 2615 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2616 lwkt_serialize_handler_disable(&sc->main_serialize);
2617 } else {
2618 int i;
2619
2620 for (i = 0; i < sc->msix_cnt; ++i) {
2621 lwkt_serialize_handler_disable(
2622 sc->msix_data[i].msix_serialize);
2623 }
2624 }
1f7e3916
SZ		 2625}
2626
2627/*
2628 * Bit of a misnomer, what this really means is
2629 * to enable OS management of the system... aka
2630 * to disable special hardware management features
2631 */
2632static void
2633igb_get_mgmt(struct igb_softc *sc)
2634{
396b7048 2635 if (sc->flags & IGB_FLAG_HAS_MGMT) {
1f7e3916
SZ		 2636 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2637 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2638
2639 /* disable hardware interception of ARP */
2640 manc &= ~E1000_MANC_ARP_EN;
2641
2642 /* enable receiving management packets to the host */
2643 manc |= E1000_MANC_EN_MNG2HOST;
2644 manc2h |= 1 << 5; /* Mng Port 623 */
2645 manc2h |= 1 << 6; /* Mng Port 664 */
2646 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2647 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2648 }
2649}
2650
2651/*
2652 * Give control back to hardware management controller
2653 * if there is one.
2654 */
2655static void
2656igb_rel_mgmt(struct igb_softc *sc)
2657{
396b7048 2658 if (sc->flags & IGB_FLAG_HAS_MGMT) {
1f7e3916
SZ		 2659 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2660
2661 /* Re-enable hardware interception of ARP */
2662 manc |= E1000_MANC_ARP_EN;
2663 manc &= ~E1000_MANC_EN_MNG2HOST;
2664
2665 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2666 }
2667}
2668
2669/*
2670 * Sets CTRL_EXT:DRV_LOAD bit.
2671 *
2672 * For ASF and Pass Through versions of f/w this means that
2673 * the driver is loaded.
2674 */
2675static void
2676igb_get_hw_control(struct igb_softc *sc)
2677{
2678 uint32_t ctrl_ext;
2679
2680 if (sc->vf_ifp)
2681 return;
2682
2683 /* Let firmware know the driver has taken over */
2684 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2685 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2686 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2687}
2688
2689/*
2690 * Resets CTRL_EXT:DRV_LOAD bit.
2691 *
2692 * For ASF and Pass Through versions of f/w this means that the
2693 * driver is no longer loaded.
2694 */
2695static void
2696igb_rel_hw_control(struct igb_softc *sc)
2697{
2698 uint32_t ctrl_ext;
2699
2700 if (sc->vf_ifp)
2701 return;
2702
2703 /* Let firmware taken over control of h/w */
2704 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2705 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2706 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2707}
2708
2709static int
2710igb_is_valid_ether_addr(const uint8_t *addr)
2711{
2712 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2713
2714 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2715 return FALSE;
2716 return TRUE;
2717}
2718
2719/*
2720 * Enable PCI Wake On Lan capability
2721 */
2722static void
2723igb_enable_wol(device_t dev)
2724{
2725 uint16_t cap, status;
2726 uint8_t id;
2727
2728 /* First find the capabilities pointer*/
2729 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2730
2731 /* Read the PM Capabilities */
2732 id = pci_read_config(dev, cap, 1);
2733 if (id != PCIY_PMG) /* Something wrong */
2734 return;
2735
2736 /*
2737 * OK, we have the power capabilities,
2738 * so now get the status register
2739 */
2740 cap += PCIR_POWER_STATUS;
2741 status = pci_read_config(dev, cap, 2);
2742 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2743 pci_write_config(dev, cap, status, 2);
2744}
2745
2746static void
2747igb_update_stats_counters(struct igb_softc *sc)
2748{
2749 struct e1000_hw *hw = &sc->hw;
2750 struct e1000_hw_stats *stats;
2751 struct ifnet *ifp = &sc->arpcom.ac_if;
2752
2753 /*
2754 * The virtual function adapter has only a
2755 * small controlled set of stats, do only
2756 * those and return.
2757 */
2758 if (sc->vf_ifp) {
2759 igb_update_vf_stats_counters(sc);
2760 return;
2761 }
2762 stats = sc->stats;
2763
2764 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2765 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2766 stats->symerrs +=
2767 E1000_READ_REG(hw,E1000_SYMERRS);
2768 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2769 }
2770
2771 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2772 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2773 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2774 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2775
2776 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2777 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2778 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2779 stats->dc += E1000_READ_REG(hw, E1000_DC);
2780 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2781 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2782 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2783
2784 /*
2785 * For watchdog management we need to know if we have been
2786 * paused during the last interval, so capture that here.
2787 */
2788 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2789 stats->xoffrxc += sc->pause_frames;
2790 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2791 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2792 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2793 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2794 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2795 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2796 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2797 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2798 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2799 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2800 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2801 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2802
2803 /* For the 64-bit byte counters the low dword must be read first. */
2804 /* Both registers clear on the read of the high dword */
2805
2806 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2807 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2808 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2809 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2810
2811 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2812 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2813 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2814 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2815 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2816
2817 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2818 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2819
2820 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2821 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2822 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2823 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2824 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2825 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2826 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2827 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2828 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2829 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2830
2831 /* Interrupt Counts */
2832
2833 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2834 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2835 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2836 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2837 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2838 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2839 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2840 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2841 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2842
2843 /* Host to Card Statistics */
2844
2845 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2846 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2847 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2848 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2849 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2850 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2851 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2852 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2853 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2854 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2855 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2856 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2857 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2858 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2859
2860 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2861 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2862 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2863 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2864 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2865 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2866
2867 ifp->if_collisions = stats->colc;
2868
2869 /* Rx Errors */
2870 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2871 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2872
2873 /* Tx Errors */
2874 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2875
2876 /* Driver specific counters */
2877 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2878 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2879 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2880 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2881 sc->packet_buf_alloc_tx =
2882 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2883 sc->packet_buf_alloc_rx =
2884 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2885}
2886
2887static void
2888igb_vf_init_stats(struct igb_softc *sc)
2889{
2890 struct e1000_hw *hw = &sc->hw;
2891 struct e1000_vf_stats *stats;
2892
2893 stats = sc->stats;
2894 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2895 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2896 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2897 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2898 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
2899}
2900
2901static void
2902igb_update_vf_stats_counters(struct igb_softc *sc)
2903{
2904 struct e1000_hw *hw = &sc->hw;
2905 struct e1000_vf_stats *stats;
2906
2907 if (sc->link_speed == 0)
2908 return;
2909
2910 stats = sc->stats;
2911 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
2912 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
2913 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
2914 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
2915 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
2916}
2917
d0f59cad 2918#ifdef IFPOLL_ENABLE
1f7e3916
SZ		 2919
2920static void
d0f59cad 2921igb_npoll_status(struct ifnet *ifp, int pollhz __unused)
1f7e3916
SZ		 2922{
2923 struct igb_softc *sc = ifp->if_softc;
2924 uint32_t reg_icr;
2925
d0f59cad 2926 ASSERT_SERIALIZED(&sc->main_serialize);
1f7e3916 2927
d0f59cad
SZ		 2928 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2929 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
2930 sc->hw.mac.get_link_status = 1;
2931 igb_update_link_status(sc);
2932 }
2933}
7d235eb5 2934
d0f59cad
SZ		 2935static void
2936igb_npoll_tx(struct ifnet *ifp, void *arg, int cycle __unused)
2937{
2938 struct igb_tx_ring *txr = arg;
7d235eb5 2939
d0f59cad 2940 ASSERT_SERIALIZED(&txr->tx_serialize);
1f7e3916 2941
d0f59cad
SZ		 2942 igb_txeof(txr);
2943 if (!ifq_is_empty(&ifp->if_snd))
2944 if_devstart(ifp);
2945}
2946
2947static void
2948igb_npoll_rx(struct ifnet *ifp __unused, void *arg, int cycle)
2949{
2950 struct igb_rx_ring *rxr = arg;
2951
2952 ASSERT_SERIALIZED(&rxr->rx_serialize);
2953
2954 igb_rxeof(rxr, cycle);
2955}
2956
2957static void
2958igb_npoll(struct ifnet *ifp, struct ifpoll_info *info)
2959{
2960 struct igb_softc *sc = ifp->if_softc;
2961
2962 ASSERT_IFNET_SERIALIZED_ALL(ifp);
2963
2964 if (info) {
2965 struct igb_tx_ring *txr;
2966 int i, off;
2967
2968 info->ifpi_status.status_func = igb_npoll_status;
2969 info->ifpi_status.serializer = &sc->main_serialize;
2970
2971 off = sc->tx_npoll_off;
2972 KKASSERT(off < ncpus2);
2973 txr = &sc->tx_rings[0];
2974 info->ifpi_tx[off].poll_func = igb_npoll_tx;
2975 info->ifpi_tx[off].arg = txr;
2976 info->ifpi_tx[off].serializer = &txr->tx_serialize;
2977
2978 off = sc->rx_npoll_off;
2979 for (i = 0; i < sc->rx_ring_cnt; ++i) {
2980 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2981 int idx = i + off;
2982
2983 KKASSERT(idx < ncpus2);
2984 info->ifpi_rx[idx].poll_func = igb_npoll_rx;
2985 info->ifpi_rx[idx].arg = rxr;
2986 info->ifpi_rx[idx].serializer = &rxr->rx_serialize;
1f7e3916 2987 }
d0f59cad
SZ		 2988
2989 if (ifp->if_flags & IFF_RUNNING) {
2990 if (sc->rx_ring_inuse == sc->rx_ring_cnt)
2991 igb_disable_intr(sc);
2992 else
2993 igb_init(sc);
2994 }
2995 ifp->if_npoll_cpuid = sc->tx_npoll_off;
2996 } else {
2997 if (ifp->if_flags & IFF_RUNNING) {
2998 if (sc->rx_ring_inuse == sc->rx_ring_cnt)
2999 igb_enable_intr(sc);
3000 else
3001 igb_init(sc);
3002 }
3003 ifp->if_npoll_cpuid = -1;
1f7e3916
SZ		 3004 }
3005}
3006
d0f59cad 3007#endif /* IFPOLL_ENABLE */
1f7e3916
SZ		 3008
3009static void
3010igb_intr(void *xsc)
3011{
3012 struct igb_softc *sc = xsc;
3013 struct ifnet *ifp = &sc->arpcom.ac_if;
f6167a56
SZ		 3014 uint32_t eicr;
3015
7d235eb5 3016 ASSERT_SERIALIZED(&sc->main_serialize);
f6167a56
SZ		 3017
3018 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
3019
3020 if (eicr == 0)
3021 return;
3022
3023 if (ifp->if_flags & IFF_RUNNING) {
7d235eb5
SZ		 3024 struct igb_tx_ring *txr;
3025 int i;
f6167a56 3026
be922da6 3027 for (i = 0; i < sc->rx_ring_inuse; ++i) {
7d235eb5
SZ		 3028 struct igb_rx_ring *rxr = &sc->rx_rings[i];
3029
3030 if (eicr & rxr->rx_intr_mask) {
3031 lwkt_serialize_enter(&rxr->rx_serialize);
3032 igb_rxeof(rxr, -1);
3033 lwkt_serialize_exit(&rxr->rx_serialize);
3034 }
3035 }
3036
3037 txr = &sc->tx_rings[0];
3038 if (eicr & txr->tx_intr_mask) {
3039 lwkt_serialize_enter(&txr->tx_serialize);
3040 igb_txeof(txr);
f6167a56
SZ		 3041 if (!ifq_is_empty(&ifp->if_snd))
3042 if_devstart(ifp);
7d235eb5 3043 lwkt_serialize_exit(&txr->tx_serialize);
f6167a56
SZ		 3044 }
3045 }
3046
3047 if (eicr & E1000_EICR_OTHER) {
3048 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3049
3050 /* Link status change */
3051 if (icr & E1000_ICR_LSC) {
3052 sc->hw.mac.get_link_status = 1;
3053 igb_update_link_status(sc);
3054 }
3055 }
3056
3057 /*
3058 * Reading EICR has the side effect to clear interrupt mask,
3059 * so all interrupts need to be enabled here.
3060 */
3061 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
3062}
3063
3064static void
9c0ecdcc 3065igb_intr_shared(void *xsc)
f6167a56
SZ		 3066{
3067 struct igb_softc *sc = xsc;
3068 struct ifnet *ifp = &sc->arpcom.ac_if;
1f7e3916
SZ		 3069 uint32_t reg_icr;
3070
7d235eb5 3071 ASSERT_SERIALIZED(&sc->main_serialize);
1f7e3916
SZ		 3072
3073 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3074
3075 /* Hot eject? */
3076 if (reg_icr == 0xffffffff)
3077 return;
3078
3079 /* Definitely not our interrupt. */
3080 if (reg_icr == 0x0)
3081 return;
3082
3083 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3084 return;
3085
3086 if (ifp->if_flags & IFF_RUNNING) {
71b8b086
SZ		 3087 if (reg_icr &
3088 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3089 int i;
7d235eb5 3090
71b8b086
SZ		 3091 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3092 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1f7e3916 3093
71b8b086
SZ		 3094 lwkt_serialize_enter(&rxr->rx_serialize);
3095 igb_rxeof(rxr, -1);
3096 lwkt_serialize_exit(&rxr->rx_serialize);
3097 }
7d235eb5
SZ		 3098 }
3099
71b8b086
SZ		 3100 if (reg_icr & E1000_ICR_TXDW) {
3101 struct igb_tx_ring *txr = &sc->tx_rings[0];
3102
3103 lwkt_serialize_enter(&txr->tx_serialize);
3104 igb_txeof(txr);
3105 if (!ifq_is_empty(&ifp->if_snd))
3106 if_devstart(ifp);
3107 lwkt_serialize_exit(&txr->tx_serialize);
3108 }
1f7e3916
SZ		 3109 }
3110
3111 /* Link status change */
3112 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3113 sc->hw.mac.get_link_status = 1;
3114 igb_update_link_status(sc);
3115 }
3116
3117 if (reg_icr & E1000_ICR_RXO)
3118 sc->rx_overruns++;
3119}
3120
3121static int
1f7e3916
SZ		 3122igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp)
3123{
3124 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3125 bus_dmamap_t map;
3126 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3127 union e1000_adv_tx_desc *txd = NULL;
3128 struct mbuf *m_head = *m_headp;
b6220144
SZ		 3129 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3130 int maxsegs, nsegs, i, j, error, last = 0;
1f7e3916
SZ		 3131 uint32_t hdrlen = 0;
3132
23f6ffe4
SZ		 3133 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3134 error = igb_tso_pullup(txr, m_headp);
3135 if (error)
3136 return error;
3137 m_head = *m_headp;
3138 }
3139
1f7e3916
SZ		 3140 /* Set basic descriptor constants */
3141 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3142 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3143 if (m_head->m_flags & M_VLANTAG)
3144 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3145
3146 /*
3147 * Map the packet for DMA.
1f7e3916 3148 */
b6220144 3149 tx_buf = &txr->tx_buf[txr->next_avail_desc];
1f7e3916
SZ		 3150 tx_buf_mapped = tx_buf;
3151 map = tx_buf->map;
3152
b6220144
SZ		 3153 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3154 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
1f7e3916
SZ		 3155 if (maxsegs > IGB_MAX_SCATTER)
3156 maxsegs = IGB_MAX_SCATTER;
3157
3158 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3159 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3160 if (error) {
3161 if (error == ENOBUFS)
3162 txr->sc->mbuf_defrag_failed++;
3163 else
3164 txr->sc->no_tx_dma_setup++;
3165
3166 m_freem(*m_headp);
3167 *m_headp = NULL;
3168 return error;
3169 }
3170 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3171
3172 m_head = *m_headp;
3173
1f7e3916 3174 /*
66c68b4b
SZ		 3175 * Set up the TX context descriptor, if any hardware offloading is
3176 * needed. This includes CSUM, VLAN, and TSO. It will consume one
3177 * TX descriptor.
3178 *
3179 * Unlike these chips' predecessors (em/emx), TX context descriptor
3180 * will _not_ interfere TX data fetching pipelining.
1f7e3916
SZ		 3181 */
3182 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
23f6ffe4
SZ		 3183 igb_tso_ctx(txr, m_head, &hdrlen);
3184 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3185 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3186 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3187 txr->tx_nsegs++;
3188 } else if (igb_txcsum_ctx(txr, m_head)) {
48faa653
SZ		 3189 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
3190 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
1f7e3916
SZ		 3191 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3192 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
b6220144 3193 txr->tx_nsegs++;
1f7e3916 3194 }
1f7e3916 3195
b6220144
SZ		 3196 txr->tx_nsegs += nsegs;
3197 if (txr->tx_nsegs >= txr->intr_nsegs) {
3198 /*
3199 * Report Status (RS) is turned on every intr_nsegs
3200 * descriptors (roughly).
3201 */
3202 txr->tx_nsegs = 0;
3203 cmd_rs = E1000_ADVTXD_DCMD_RS;
3204 }
3205
1f7e3916
SZ		 3206 /* Calculate payload length */
3207 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3208 << E1000_ADVTXD_PAYLEN_SHIFT);
3209
3210 /* 82575 needs the queue index added */
3211 if (txr->sc->hw.mac.type == e1000_82575)
3212 olinfo_status |= txr->me << 4;
3213
3214 /* Set up our transmit descriptors */
3215 i = txr->next_avail_desc;
3216 for (j = 0; j < nsegs; j++) {
3217 bus_size_t seg_len;
3218 bus_addr_t seg_addr;
3219
3220 tx_buf = &txr->tx_buf[i];
3221 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3222 seg_addr = segs[j].ds_addr;
3223 seg_len = segs[j].ds_len;
3224
3225 txd->read.buffer_addr = htole64(seg_addr);
3226 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3227 txd->read.olinfo_status = htole32(olinfo_status);
3228 last = i;
91b8700a 3229 if (++i == txr->num_tx_desc)
1f7e3916
SZ		 3230 i = 0;
3231 tx_buf->m_head = NULL;
1f7e3916
SZ		 3232 }
3233
3234 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3235 txr->next_avail_desc = i;
3236 txr->tx_avail -= nsegs;
3237
3238 tx_buf->m_head = m_head;
3239 tx_buf_mapped->map = tx_buf->map;
3240 tx_buf->map = map;
3241
3242 /*
b6220144 3243 * Last Descriptor of Packet needs End Of Packet (EOP)
1f7e3916 3244 */
b6220144 3245 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
1f7e3916
SZ		 3246
3247 /*
3248 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000
3249 * that this frame is available to transmit.
3250 */
3251 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), i);
3252 ++txr->tx_packets;
3253
3254 return 0;
3255}
3256
3257static void
3258igb_start(struct ifnet *ifp)
3259{
3260 struct igb_softc *sc = ifp->if_softc;
27866bf1 3261 struct igb_tx_ring *txr = &sc->tx_rings[0];
1f7e3916
SZ		 3262 struct mbuf *m_head;
3263
7d235eb5 3264 ASSERT_SERIALIZED(&txr->tx_serialize);
1f7e3916 3265
9c0ecdcc 3266 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
1f7e3916
SZ		 3267 return;
3268
3269 if (!sc->link_active) {
3270 ifq_purge(&ifp->if_snd);
3271 return;
3272 }
3273
b6220144 3274 if (!IGB_IS_NOT_OACTIVE(txr))
1f7e3916
SZ		 3275 igb_txeof(txr);
3276
3277 while (!ifq_is_empty(&ifp->if_snd)) {
b6220144 3278 if (IGB_IS_OACTIVE(txr)) {
1f7e3916
SZ		 3279 ifp->if_flags |= IFF_OACTIVE;
3280 /* Set watchdog on */
3281 ifp->if_timer = 5;
3282 break;
3283 }
3284
3285 m_head = ifq_dequeue(&ifp->if_snd, NULL);
3286 if (m_head == NULL)
3287 break;
3288
3289 if (igb_encap(txr, &m_head)) {
3290 ifp->if_oerrors++;
3291 continue;
3292 }
3293
3294 /* Send a copy of the frame to the BPF listener */
3295 ETHER_BPF_MTAP(ifp, m_head);
3296 }
3297}
3298
3299static void
3300igb_watchdog(struct ifnet *ifp)
3301{
3302 struct igb_softc *sc = ifp->if_softc;
27866bf1 3303 struct igb_tx_ring *txr = &sc->tx_rings[0];
1f7e3916
SZ		 3304
3305 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3306
3307 /*
3308 * If flow control has paused us since last checking
3309 * it invalidates the watchdog timing, so dont run it.
3310 */
3311 if (sc->pause_frames) {
3312 sc->pause_frames = 0;
3313 ifp->if_timer = 5;
3314 return;
3315 }
3316
3317 if_printf(ifp, "Watchdog timeout -- resetting\n");
3318 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3319 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3320 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3321 if_printf(ifp, "TX(%d) desc avail = %d, "
3322 "Next TX to Clean = %d\n",
3323 txr->me, txr->tx_avail, txr->next_to_clean);
3324
3325 ifp->if_oerrors++;
3326 sc->watchdog_events++;
3327
3328 igb_init(sc);
3329 if (!ifq_is_empty(&ifp->if_snd))
3330 if_devstart(ifp);
3331}
3332
3333static void
9c0ecdcc 3334igb_set_eitr(struct igb_softc *sc, int idx, int rate)
1f7e3916 3335{
9c0ecdcc 3336 uint32_t eitr = 0;
1f7e3916 3337
9c0ecdcc 3338 if (rate > 0) {
1f7e3916 3339 if (sc->hw.mac.type == e1000_82575) {
9c0ecdcc 3340 eitr = 1000000000 / 256 / rate;
1f7e3916
SZ		 3341 /*
3342 * NOTE:
3343 * Document is wrong on the 2 bits left shift
3344 */
3345 } else {
9c0ecdcc 3346 eitr = 1000000 / rate;
d4beffa9
SZ		 3347 eitr <<= IGB_EITR_INTVL_SHIFT;
3348 }
3349
3350 if (eitr == 0) {
3351 /* Don't disable it */
3352 eitr = 1 << IGB_EITR_INTVL_SHIFT;
3353 } else if (eitr > IGB_EITR_INTVL_MASK) {
3354 /* Don't allow it to be too large */
3355 eitr = IGB_EITR_INTVL_MASK;
1f7e3916 3356 }
1f7e3916
SZ		 3357 }
3358 if (sc->hw.mac.type == e1000_82575)
9c0ecdcc 3359 eitr |= eitr << 16;
1f7e3916 3360 else
9c0ecdcc
SZ		 3361 eitr |= E1000_EITR_CNT_IGNR;
3362 E1000_WRITE_REG(&sc->hw, E1000_EITR(idx), eitr);
1f7e3916
SZ		 3363}
3364
3365static int
3366igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3367{
3368 struct igb_softc *sc = (void *)arg1;
3369 struct ifnet *ifp = &sc->arpcom.ac_if;
3370 int error, intr_rate;
3371
3372 intr_rate = sc->intr_rate;
3373 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3374 if (error || req->newptr == NULL)
3375 return error;
3376 if (intr_rate < 0)
3377 return EINVAL;
3378
3379 ifnet_serialize_all(ifp);
3380
3381 sc->intr_rate = intr_rate;
3382 if (ifp->if_flags & IFF_RUNNING)
9c0ecdcc
SZ		 3383 igb_set_eitr(sc, 0, sc->intr_rate);
3384
3385 if (bootverbose)
3386 if_printf(ifp, "interrupt rate set to %d/sec\n", sc->intr_rate);
1f7e3916
SZ		 3387
3388 ifnet_deserialize_all(ifp);
3389
9c0ecdcc
SZ		 3390 return 0;
3391}
3392
3393static int
3394igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS)
3395{
3396 struct igb_msix_data *msix = (void *)arg1;
3397 struct igb_softc *sc = msix->msix_sc;
3398 struct ifnet *ifp = &sc->arpcom.ac_if;
3399 int error, msix_rate;
3400
3401 msix_rate = msix->msix_rate;
3402 error = sysctl_handle_int(oidp, &msix_rate, 0, req);
3403 if (error || req->newptr == NULL)
3404 return error;
3405 if (msix_rate < 0)
3406 return EINVAL;
3407
3408 lwkt_serialize_enter(msix->msix_serialize);
3409
3410 msix->msix_rate = msix_rate;
3411 if (ifp->if_flags & IFF_RUNNING)
3412 igb_set_eitr(sc, msix->msix_vector, msix->msix_rate);
3413
3414 if (bootverbose) {
3415 if_printf(ifp, "%s set to %d/sec\n", msix->msix_rate_desc,
3416 msix->msix_rate);
3417 }
3418
3419 lwkt_serialize_exit(msix->msix_serialize);
3420
1f7e3916
SZ		 3421 return 0;
3422}
b6220144
SZ		 3423
3424static int
3425igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3426{
3427 struct igb_softc *sc = (void *)arg1;
3428 struct ifnet *ifp = &sc->arpcom.ac_if;
27866bf1 3429 struct igb_tx_ring *txr = &sc->tx_rings[0];
b6220144
SZ		 3430 int error, nsegs;
3431
3432 nsegs = txr->intr_nsegs;
3433 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3434 if (error || req->newptr == NULL)
3435 return error;
3436 if (nsegs <= 0)
3437 return EINVAL;
3438
3439 ifnet_serialize_all(ifp);
3440
91b8700a 3441 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
b6220144
SZ		 3442 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3443 error = EINVAL;
3444 } else {
3445 error = 0;
3446 txr->intr_nsegs = nsegs;
3447 }
3448
3449 ifnet_deserialize_all(ifp);
3450
3451 return error;
3452}
f6167a56 3453
d0f59cad
SZ		 3454#ifdef IFPOLL_ENABLE
3455
3456static int
3457igb_sysctl_npoll_rxoff(SYSCTL_HANDLER_ARGS)
3458{
3459 struct igb_softc *sc = (void *)arg1;
3460 struct ifnet *ifp = &sc->arpcom.ac_if;
3461 int error, off;
3462
3463 off = sc->rx_npoll_off;
3464 error = sysctl_handle_int(oidp, &off, 0, req);
3465 if (error || req->newptr == NULL)
3466 return error;
3467 if (off < 0)
3468 return EINVAL;
3469
3470 ifnet_serialize_all(ifp);
3471 if (off >= ncpus2 || off % sc->rx_ring_cnt != 0) {
3472 error = EINVAL;
3473 } else {
3474 error = 0;
3475 sc->rx_npoll_off = off;
3476 }
3477 ifnet_deserialize_all(ifp);
3478
3479 return error;
3480}
3481
3482static int
3483igb_sysctl_npoll_txoff(SYSCTL_HANDLER_ARGS)
3484{
3485 struct igb_softc *sc = (void *)arg1;
3486 struct ifnet *ifp = &sc->arpcom.ac_if;
3487 int error, off;
3488
3489 off = sc->tx_npoll_off;
3490 error = sysctl_handle_int(oidp, &off, 0, req);
3491 if (error || req->newptr == NULL)
3492 return error;
3493 if (off < 0)
3494 return EINVAL;
3495
3496 ifnet_serialize_all(ifp);
3497 if (off >= ncpus2) {
3498 error = EINVAL;
3499 } else {
3500 error = 0;
3501 sc->tx_npoll_off = off;
3502 }
3503 ifnet_deserialize_all(ifp);
3504
3505 return error;
3506}
3507
3508#endif /* IFPOLL_ENABLE */
3509
f6167a56
SZ		 3510static void
3511igb_init_intr(struct igb_softc *sc)
3512{
be922da6 3513 igb_set_intr_mask(sc);
9c0ecdcc
SZ		 3514
3515 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0)
f6167a56 3516 igb_init_unshared_intr(sc);
9c0ecdcc
SZ		 3517
3518 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
3519 igb_set_eitr(sc, 0, sc->intr_rate);
3520 } else {
3521 int i;
3522
3523 for (i = 0; i < sc->msix_cnt; ++i)
3524 igb_set_eitr(sc, i, sc->msix_data[i].msix_rate);
3525 }
f6167a56
SZ		 3526}
3527
3528static void
3529igb_init_unshared_intr(struct igb_softc *sc)
3530{
3531 struct e1000_hw *hw = &sc->hw;
3532 const struct igb_rx_ring *rxr;
3533 const struct igb_tx_ring *txr;
3534 uint32_t ivar, index;
3535 int i;
3536
3537 /*
3538 * Enable extended mode
3539 */
3540 if (sc->hw.mac.type != e1000_82575) {
9c0ecdcc
SZ		 3541 uint32_t gpie;
3542 int ivar_max;
3543
3544 gpie = E1000_GPIE_NSICR;
3545 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3546 gpie |= E1000_GPIE_MSIX_MODE |
3547 E1000_GPIE_EIAME |
3548 E1000_GPIE_PBA;
3549 }
3550 E1000_WRITE_REG(hw, E1000_GPIE, gpie);
3551
3552 /*
3553 * Clear IVARs
3554 */
3555 switch (sc->hw.mac.type) {
3556 case e1000_82580:
3557 ivar_max = IGB_MAX_IVAR_82580;
3558 break;
3559
3560 case e1000_i350:
3561 ivar_max = IGB_MAX_IVAR_I350;
3562 break;
3563
3564 case e1000_vfadapt:
3565 case e1000_vfadapt_i350:
3566 ivar_max = IGB_MAX_IVAR_VF;
3567 break;
3568
3569 case e1000_82576:
3570 ivar_max = IGB_MAX_IVAR_82576;
3571 break;
3572
3573 default:
3574 panic("unknown mac type %d\n", sc->hw.mac.type);
3575 }
3576 for (i = 0; i < ivar_max; ++i)
3577 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, i, 0);
3578 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
f6167a56
SZ		 3579 } else {
3580 uint32_t tmp;
3581
9c0ecdcc
SZ		 3582 KASSERT(sc->intr_type != PCI_INTR_TYPE_MSIX,
3583 ("82575 w/ MSI-X"));
f6167a56
SZ		 3584 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3585 tmp |= E1000_CTRL_EXT_IRCA;
3586 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3587 }
3588
3589 /*
3590 * Map TX/RX interrupts to EICR
3591 */
3592 switch (sc->hw.mac.type) {
3593 case e1000_82580:
3594 case e1000_i350:
3595 case e1000_vfadapt:
3596 case e1000_vfadapt_i350:
3597 /* RX entries */
be922da6 3598 for (i = 0; i < sc->rx_ring_inuse; ++i) {
f6167a56
SZ		 3599 rxr = &sc->rx_rings[i];
3600
3601 index = i >> 1;
3602 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3603
3604 if (i & 1) {
3605 ivar &= 0xff00ffff;
3606 ivar |=
3607 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3608 } else {
3609 ivar &= 0xffffff00;
3610 ivar |=
3611 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3612 }
3613 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3614 }
3615 /* TX entries */
27866bf1 3616 for (i = 0; i < sc->tx_ring_cnt; ++i) {
f6167a56
SZ		 3617 txr = &sc->tx_rings[i];
3618
3619 index = i >> 1;
3620 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3621
3622 if (i & 1) {
3623 ivar &= 0x00ffffff;
3624 ivar |=
3625 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3626 } else {
3627 ivar &= 0xffff00ff;
3628 ivar |=
3629 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3630 }
3631 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3632 }
9c0ecdcc
SZ		 3633 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3634 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3635 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3636 }
f6167a56
SZ		 3637 break;
3638
3639 case e1000_82576:
3640 /* RX entries */
be922da6 3641 for (i = 0; i < sc->rx_ring_inuse; ++i) {
f6167a56
SZ		 3642 rxr = &sc->rx_rings[i];
3643
3644 index = i & 0x7; /* Each IVAR has two entries */
3645 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3646
3647 if (i < 8) {
3648 ivar &= 0xffffff00;
3649 ivar |=
3650 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3651 } else {
3652 ivar &= 0xff00ffff;
3653 ivar |=
3654 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3655 }
3656 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3657 }
3658 /* TX entries */
27866bf1 3659 for (i = 0; i < sc->tx_ring_cnt; ++i) {
f6167a56
SZ		 3660 txr = &sc->tx_rings[i];
3661
3662 index = i & 0x7; /* Each IVAR has two entries */
3663 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3664
3665 if (i < 8) {
3666 ivar &= 0xffff00ff;
3667 ivar |=
3668 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3669 } else {
3670 ivar &= 0x00ffffff;
3671 ivar |=
3672 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3673 }
3674 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3675 }
9c0ecdcc
SZ		 3676 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3677 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3678 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3679 }
f6167a56
SZ		 3680 break;
3681
3682 case e1000_82575:
3683 /*
3684 * Enable necessary interrupt bits.
3685 *
3686 * The name of the register is confusing; in addition to
3687 * configuring the first vector of MSI-X, it also configures
3688 * which bits of EICR could be set by the hardware even when
3689 * MSI or line interrupt is used; it thus controls interrupt
3690 * generation. It MUST be configured explicitly; the default
3691 * value mentioned in the datasheet is wrong: RX queue0 and
3692 * TX queue0 are NOT enabled by default.
3693 */
3694 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3695 break;
3696
3697 default:
9c0ecdcc 3698 panic("unknown mac type %d\n", sc->hw.mac.type);
f6167a56 3699 }
f6167a56
SZ		 3700}
3701
3702static int
3703igb_setup_intr(struct igb_softc *sc)
3704{
3705 struct ifnet *ifp = &sc->arpcom.ac_if;
9c0ecdcc 3706 int error;
f6167a56 3707
9c0ecdcc
SZ		 3708 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3709 return igb_msix_setup(sc);
f6167a56 3710
f6167a56 3711 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
9c0ecdcc 3712 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_intr_shared : igb_intr,
7d235eb5 3713 sc, &sc->intr_tag, &sc->main_serialize);
f6167a56
SZ		 3714 if (error) {
3715 device_printf(sc->dev, "Failed to register interrupt handler");
3716 return error;
3717 }
3718
3719 ifp->if_cpuid = rman_get_cpuid(sc->intr_res);
3720 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
3721
3722 return 0;
3723}
3724
3725static void
9c0ecdcc 3726igb_set_txintr_mask(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
f6167a56
SZ		 3727{
3728 if (txr->sc->hw.mac.type == e1000_82575) {
3729 txr->tx_intr_bit = 0; /* unused */
3730 switch (txr->me) {
3731 case 0:
3732 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3733 break;
3734 case 1:
3735 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3736 break;
3737 case 2:
3738 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3739 break;
3740 case 3:
3741 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3742 break;
3743 default:
3744 panic("unsupported # of TX ring, %d\n", txr->me);
3745 }
3746 } else {
8d6600da
SZ		 3747 int intr_bit = *intr_bit0;
3748
3749 txr->tx_intr_bit = intr_bit % intr_bitmax;
f6167a56 3750 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
8d6600da
SZ		 3751
3752 *intr_bit0 = intr_bit + 1;
f6167a56
SZ		 3753 }
3754}
3755
3756static void
9c0ecdcc 3757igb_set_rxintr_mask(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
f6167a56
SZ		 3758{
3759 if (rxr->sc->hw.mac.type == e1000_82575) {
3760 rxr->rx_intr_bit = 0; /* unused */
3761 switch (rxr->me) {
3762 case 0:
3763 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3764 break;
3765 case 1:
3766 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3767 break;
3768 case 2:
3769 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3770 break;
3771 case 3:
3772 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3773 break;
3774 default:
3775 panic("unsupported # of RX ring, %d\n", rxr->me);
3776 }
3777 } else {
8d6600da
SZ		 3778 int intr_bit = *intr_bit0;
3779
3780 rxr->rx_intr_bit = intr_bit % intr_bitmax;
f6167a56 3781 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
8d6600da
SZ		 3782
3783 *intr_bit0 = intr_bit + 1;
f6167a56
SZ		 3784 }
3785}
7d235eb5
SZ		 3786
3787static void
3788igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3789{
3790 struct igb_softc *sc = ifp->if_softc;
3791
3792 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3793 sc->tx_serialize, sc->rx_serialize, slz);
3794}
3795
3796static void
3797igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3798{
3799 struct igb_softc *sc = ifp->if_softc;
3800
3801 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3802 sc->tx_serialize, sc->rx_serialize, slz);
3803}
3804
3805static int
3806igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3807{
3808 struct igb_softc *sc = ifp->if_softc;
3809
3810 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3811 sc->tx_serialize, sc->rx_serialize, slz);
3812}
3813
7d235eb5
SZ		 3814#ifdef INVARIANTS
3815
3816static void
3817igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3818 boolean_t serialized)
3819{
3820 struct igb_softc *sc = ifp->if_softc;
3821
3822 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3823 sc->tx_serialize, sc->rx_serialize, slz, serialized);
3824}
3825
3826#endif /* INVARIANTS */
be922da6
SZ		 3827
3828static void
3829igb_set_intr_mask(struct igb_softc *sc)
3830{
3831 int i;
3832
9c0ecdcc 3833 sc->intr_mask = sc->sts_intr_mask;
be922da6
SZ		 3834 for (i = 0; i < sc->rx_ring_inuse; ++i)
3835 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
3836 for (i = 0; i < sc->tx_ring_cnt; ++i)
3837 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
62be5890
SZ		 3838 if (bootverbose) {
3839 if_printf(&sc->arpcom.ac_if, "intr mask 0x%08x\n",
3840 sc->intr_mask);
3841 }
be922da6 3842}
3c7cc5e2
SZ		 3843
3844static int
3845igb_alloc_intr(struct igb_softc *sc)
3846{
9c0ecdcc 3847 int i, intr_bit, intr_bitmax;
3c7cc5e2
SZ		 3848 u_int intr_flags;
3849
9c0ecdcc
SZ		 3850 igb_msix_try_alloc(sc);
3851 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3852 goto done;
3853
3854 /*
3855 * Allocate MSI/legacy interrupt resource
3856 */
3c7cc5e2
SZ		 3857 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
3858 &sc->intr_rid, &intr_flags);