projects / dragonfly.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
igb: Make sure that mbuf is changed before busdma sync
[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
32#include "opt_polling.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);
1f7e3916
SZ		 146
147static void igb_vf_init_stats(struct igb_softc *);
148static void igb_reset(struct igb_softc *);
149static void igb_update_stats_counters(struct igb_softc *);
150static void igb_update_vf_stats_counters(struct igb_softc *);
151static void igb_update_link_status(struct igb_softc *);
152static void igb_init_tx_unit(struct igb_softc *);
153static void igb_init_rx_unit(struct igb_softc *);
154
155static void igb_set_vlan(struct igb_softc *);
156static void igb_set_multi(struct igb_softc *);
157static void igb_set_promisc(struct igb_softc *);
158static void igb_disable_promisc(struct igb_softc *);
159
a619b256
SZ		 160static int igb_alloc_rings(struct igb_softc *);
161static void igb_free_rings(struct igb_softc *);
1f7e3916
SZ		 162static int igb_create_tx_ring(struct igb_tx_ring *);
163static int igb_create_rx_ring(struct igb_rx_ring *);
164static void igb_free_tx_ring(struct igb_tx_ring *);
165static void igb_free_rx_ring(struct igb_rx_ring *);
166static void igb_destroy_tx_ring(struct igb_tx_ring *, int);
167static void igb_destroy_rx_ring(struct igb_rx_ring *, int);
168static void igb_init_tx_ring(struct igb_tx_ring *);
169static int igb_init_rx_ring(struct igb_rx_ring *);
170static int igb_newbuf(struct igb_rx_ring *, int, boolean_t);
171static int igb_encap(struct igb_tx_ring *, struct mbuf **);
172
173static void igb_stop(struct igb_softc *);
174static void igb_init(void *);
175static int igb_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
176static void igb_media_status(struct ifnet *, struct ifmediareq *);
177static int igb_media_change(struct ifnet *);
178static void igb_timer(void *);
179static void igb_watchdog(struct ifnet *);
180static void igb_start(struct ifnet *);
181#ifdef DEVICE_POLLING
182static void igb_poll(struct ifnet *, enum poll_cmd, int);
183#endif
7d235eb5
SZ		 184static void igb_serialize(struct ifnet *, enum ifnet_serialize);
185static void igb_deserialize(struct ifnet *, enum ifnet_serialize);
186static int igb_tryserialize(struct ifnet *, enum ifnet_serialize);
187#ifdef INVARIANTS
188static void igb_serialize_assert(struct ifnet *, enum ifnet_serialize,
189 boolean_t);
190#endif
1f7e3916
SZ		 191
192static void igb_intr(void *);
9c0ecdcc 193static void igb_intr_shared(void *);
1f7e3916
SZ		 194static void igb_rxeof(struct igb_rx_ring *, int);
195static void igb_txeof(struct igb_tx_ring *);
9c0ecdcc 196static void igb_set_eitr(struct igb_softc *, int, int);
1f7e3916
SZ		 197static void igb_enable_intr(struct igb_softc *);
198static void igb_disable_intr(struct igb_softc *);
f6167a56
SZ		 199static void igb_init_unshared_intr(struct igb_softc *);
200static void igb_init_intr(struct igb_softc *);
201static int igb_setup_intr(struct igb_softc *);
9c0ecdcc
SZ		 202static void igb_set_txintr_mask(struct igb_tx_ring *, int *, int);
203static void igb_set_rxintr_mask(struct igb_rx_ring *, int *, int);
be922da6 204static void igb_set_intr_mask(struct igb_softc *);
3c7cc5e2
SZ		 205static int igb_alloc_intr(struct igb_softc *);
206static void igb_free_intr(struct igb_softc *);
9c0ecdcc
SZ		 207static void igb_teardown_intr(struct igb_softc *);
208static void igb_msix_try_alloc(struct igb_softc *);
209static void igb_msix_free(struct igb_softc *, boolean_t);
210static int igb_msix_setup(struct igb_softc *);
211static void igb_msix_teardown(struct igb_softc *, int);
212static void igb_msix_rx(void *);
213static void igb_msix_tx(void *);
214static void igb_msix_status(void *);
1f7e3916
SZ		 215
216/* Management and WOL Support */
217static void igb_get_mgmt(struct igb_softc *);
218static void igb_rel_mgmt(struct igb_softc *);
219static void igb_get_hw_control(struct igb_softc *);
73a4e8ed
SZ		 220static void igb_rel_hw_control(struct igb_softc *);
221static void igb_enable_wol(device_t);
1f7e3916
SZ		 222
223static device_method_t igb_methods[] = {
224 /* Device interface */
225 DEVMETHOD(device_probe, igb_probe),
226 DEVMETHOD(device_attach, igb_attach),
227 DEVMETHOD(device_detach, igb_detach),
228 DEVMETHOD(device_shutdown, igb_shutdown),
229 DEVMETHOD(device_suspend, igb_suspend),
230 DEVMETHOD(device_resume, igb_resume),
231 { 0, 0 }
232};
233
234static driver_t igb_driver = {
235 "igb",
236 igb_methods,
237 sizeof(struct igb_softc),
238};
239
240static devclass_t igb_devclass;
241
242DECLARE_DUMMY_MODULE(if_igb);
243MODULE_DEPEND(igb, ig_hal, 1, 1, 1);
244DRIVER_MODULE(if_igb, pci, igb_driver, igb_devclass, NULL, NULL);
245
246static int igb_rxd = IGB_DEFAULT_RXD;
247static int igb_txd = IGB_DEFAULT_TXD;
8d6600da 248static int igb_rxr = 0;
1f7e3916
SZ		 249static int igb_msi_enable = 1;
250static int igb_msix_enable = 1;
251static int igb_eee_disabled = 1; /* Energy Efficient Ethernet */
252static int igb_fc_setting = e1000_fc_full;
253
254/*
255 * DMA Coalescing, only for i350 - default to off,
256 * this feature is for power savings
257 */
258static int igb_dma_coalesce = 0;
259
260TUNABLE_INT("hw.igb.rxd", &igb_rxd);
261TUNABLE_INT("hw.igb.txd", &igb_txd);
8d6600da 262TUNABLE_INT("hw.igb.rxr", &igb_rxr);
1f7e3916
SZ		 263TUNABLE_INT("hw.igb.msi.enable", &igb_msi_enable);
264TUNABLE_INT("hw.igb.msix.enable", &igb_msix_enable);
265TUNABLE_INT("hw.igb.fc_setting", &igb_fc_setting);
266
267/* i350 specific */
268TUNABLE_INT("hw.igb.eee_disabled", &igb_eee_disabled);
269TUNABLE_INT("hw.igb.dma_coalesce", &igb_dma_coalesce);
270
271static __inline void
272igb_rxcsum(uint32_t staterr, struct mbuf *mp)
273{
274 /* Ignore Checksum bit is set */
275 if (staterr & E1000_RXD_STAT_IXSM)
276 return;
277
278 if ((staterr & (E1000_RXD_STAT_IPCS | E1000_RXDEXT_STATERR_IPE)) ==
279 E1000_RXD_STAT_IPCS)
280 mp->m_pkthdr.csum_flags |= CSUM_IP_CHECKED | CSUM_IP_VALID;
281
282 if (staterr & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) {
283 if ((staterr & E1000_RXDEXT_STATERR_TCPE) == 0) {
284 mp->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
285 CSUM_PSEUDO_HDR | CSUM_FRAG_NOT_CHECKED;
286 mp->m_pkthdr.csum_data = htons(0xffff);
287 }
288 }
289}
290
8d6600da
SZ		 291static __inline struct pktinfo *
292igb_rssinfo(struct mbuf *m, struct pktinfo *pi,
293 uint32_t hash, uint32_t hashtype, uint32_t staterr)
294{
295 switch (hashtype) {
296 case E1000_RXDADV_RSSTYPE_IPV4_TCP:
297 pi->pi_netisr = NETISR_IP;
298 pi->pi_flags = 0;
299 pi->pi_l3proto = IPPROTO_TCP;
300 break;
301
302 case E1000_RXDADV_RSSTYPE_IPV4:
303 if (staterr & E1000_RXD_STAT_IXSM)
304 return NULL;
305
306 if ((staterr &
307 (E1000_RXD_STAT_TCPCS | E1000_RXDEXT_STATERR_TCPE)) ==
308 E1000_RXD_STAT_TCPCS) {
309 pi->pi_netisr = NETISR_IP;
310 pi->pi_flags = 0;
311 pi->pi_l3proto = IPPROTO_UDP;
312 break;
313 }
314 /* FALL THROUGH */
315 default:
316 return NULL;
317 }
318
319 m->m_flags |= M_HASH;
320 m->m_pkthdr.hash = toeplitz_hash(hash);
321 return pi;
322}
323
1f7e3916
SZ		 324static int
325igb_probe(device_t dev)
326{
327 const struct igb_device *d;
328 uint16_t vid, did;
329
330 vid = pci_get_vendor(dev);
331 did = pci_get_device(dev);
332
333 for (d = igb_devices; d->desc != NULL; ++d) {
334 if (vid == d->vid && did == d->did) {
335 device_set_desc(dev, d->desc);
336 return 0;
337 }
338 }
339 return ENXIO;
340}
341
342static int
343igb_attach(device_t dev)
344{
345 struct igb_softc *sc = device_get_softc(dev);
1f7e3916 346 uint16_t eeprom_data;
8d6600da 347 int error = 0, i, j, ring_max;
1f7e3916
SZ		 348
349#ifdef notyet
350 /* SYSCTL stuff */
351 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
352 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
353 OID_AUTO, "nvm", CTLTYPE_INT|CTLFLAG_RW, adapter, 0,
354 igb_sysctl_nvm_info, "I", "NVM Information");
355
356 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
357 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
358 OID_AUTO, "enable_aim", CTLTYPE_INT|CTLFLAG_RW,
359 &igb_enable_aim, 1, "Interrupt Moderation");
360
361 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
362 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
363 OID_AUTO, "flow_control", CTLTYPE_INT|CTLFLAG_RW,
364 adapter, 0, igb_set_flowcntl, "I", "Flow Control");
365#endif
366
367 callout_init_mp(&sc->timer);
9c0ecdcc 368 lwkt_serialize_init(&sc->main_serialize);
1f7e3916
SZ		 369
370 sc->dev = sc->osdep.dev = dev;
371
372 /*
373 * Determine hardware and mac type
374 */
375 sc->hw.vendor_id = pci_get_vendor(dev);
376 sc->hw.device_id = pci_get_device(dev);
377 sc->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
378 sc->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
379 sc->hw.subsystem_device_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
380
381 if (e1000_set_mac_type(&sc->hw))
382 return ENXIO;
383
384 /* Are we a VF device? */
385 if (sc->hw.mac.type == e1000_vfadapt ||
386 sc->hw.mac.type == e1000_vfadapt_i350)
387 sc->vf_ifp = 1;
388 else
389 sc->vf_ifp = 0;
390
9b7aa975
SZ		 391 /*
392 * Configure total supported RX/TX ring count
393 */
394 switch (sc->hw.mac.type) {
395 case e1000_82575:
396 ring_max = IGB_MAX_RING_82575;
397 break;
398 case e1000_82580:
399 ring_max = IGB_MAX_RING_82580;
400 break;
401 case e1000_i350:
402 ring_max = IGB_MAX_RING_I350;
403 break;
404 case e1000_82576:
405 ring_max = IGB_MAX_RING_82576;
406 break;
407 default:
408 ring_max = IGB_MIN_RING;
409 break;
410 }
411 sc->rx_ring_cnt = device_getenv_int(dev, "rxr", igb_rxr);
412 sc->rx_ring_cnt = if_ring_count2(sc->rx_ring_cnt, ring_max);
413#ifdef IGB_RSS_DEBUG
414 sc->rx_ring_cnt = device_getenv_int(dev, "rxr_debug", sc->rx_ring_cnt);
415#endif
416 sc->rx_ring_inuse = sc->rx_ring_cnt;
417 sc->tx_ring_cnt = 1; /* XXX */
418
23f6ffe4
SZ		 419 if (sc->hw.mac.type == e1000_82575)
420 sc->flags |= IGB_FLAG_TSO_IPLEN0;
421
1f7e3916
SZ		 422 /* Enable bus mastering */
423 pci_enable_busmaster(dev);
424
425 /*
426 * Allocate IO memory
427 */
428 sc->mem_rid = PCIR_BAR(0);
429 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
430 RF_ACTIVE);
431 if (sc->mem_res == NULL) {
432 device_printf(dev, "Unable to allocate bus resource: memory\n");
433 error = ENXIO;
434 goto failed;
435 }
436 sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->mem_res);
437 sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->mem_res);
438
439 sc->hw.hw_addr = (uint8_t *)&sc->osdep.mem_bus_space_handle;
440
1f7e3916
SZ		 441 /* Save PCI command register for Shared Code */
442 sc->hw.bus.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
443 sc->hw.back = &sc->osdep;
444
1f7e3916
SZ		 445 /* Do Shared Code initialization */
446 if (e1000_setup_init_funcs(&sc->hw, TRUE)) {
447 device_printf(dev, "Setup of Shared code failed\n");
448 error = ENXIO;
449 goto failed;
450 }
451
452 e1000_get_bus_info(&sc->hw);
453
454 sc->hw.mac.autoneg = DO_AUTO_NEG;
455 sc->hw.phy.autoneg_wait_to_complete = FALSE;
456 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
457
458 /* Copper options */
459 if (sc->hw.phy.media_type == e1000_media_type_copper) {
460 sc->hw.phy.mdix = AUTO_ALL_MODES;
461 sc->hw.phy.disable_polarity_correction = FALSE;
462 sc->hw.phy.ms_type = IGB_MASTER_SLAVE;
463 }
464
465 /* Set the frame limits assuming standard ethernet sized frames. */
466 sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
1f7e3916 467
a619b256
SZ		 468 /* Allocate RX/TX rings */
469 error = igb_alloc_rings(sc);
1f7e3916
SZ		 470 if (error)
471 goto failed;
472
3c7cc5e2
SZ		 473 /* Allocate interrupt */
474 error = igb_alloc_intr(sc);
475 if (error)
a1647e40 476 goto failed;
a1647e40 477
7d235eb5
SZ		 478 /*
479 * Setup serializers
480 */
7d235eb5
SZ		 481 i = 0;
482 sc->serializes[i++] = &sc->main_serialize;
483
484 sc->tx_serialize = i;
485 for (j = 0; j < sc->tx_ring_cnt; ++j)
486 sc->serializes[i++] = &sc->tx_rings[j].tx_serialize;
487
488 sc->rx_serialize = i;
489 for (j = 0; j < sc->rx_ring_cnt; ++j)
490 sc->serializes[i++] = &sc->rx_rings[j].rx_serialize;
491
492 sc->serialize_cnt = i;
493 KKASSERT(sc->serialize_cnt <= IGB_NSERIALIZE);
494
1f7e3916
SZ		 495 /* Allocate the appropriate stats memory */
496 if (sc->vf_ifp) {
497 sc->stats = kmalloc(sizeof(struct e1000_vf_stats), M_DEVBUF,
498 M_WAITOK | M_ZERO);
499 igb_vf_init_stats(sc);
500 } else {
501 sc->stats = kmalloc(sizeof(struct e1000_hw_stats), M_DEVBUF,
502 M_WAITOK | M_ZERO);
503 }
504
505 /* Allocate multicast array memory. */
506 sc->mta = kmalloc(ETHER_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES,
507 M_DEVBUF, M_WAITOK);
508
509 /* Some adapter-specific advanced features */
510 if (sc->hw.mac.type >= e1000_i350) {
511#ifdef notyet
512 igb_set_sysctl_value(adapter, "dma_coalesce",
513 "configure dma coalesce",
514 &adapter->dma_coalesce, igb_dma_coalesce);
515 igb_set_sysctl_value(adapter, "eee_disabled",
516 "enable Energy Efficient Ethernet",
517 &adapter->hw.dev_spec._82575.eee_disable,
518 igb_eee_disabled);
519#else
520 sc->dma_coalesce = igb_dma_coalesce;
521 sc->hw.dev_spec._82575.eee_disable = igb_eee_disabled;
522#endif
523 e1000_set_eee_i350(&sc->hw);
524 }
525
526 /*
527 * Start from a known state, this is important in reading the nvm and
528 * mac from that.
529 */
530 e1000_reset_hw(&sc->hw);
531
532 /* Make sure we have a good EEPROM before we read from it */
533 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
534 /*
535 * Some PCI-E parts fail the first check due to
536 * the link being in sleep state, call it again,
537 * if it fails a second time its a real issue.
538 */
539 if (e1000_validate_nvm_checksum(&sc->hw) < 0) {
540 device_printf(dev,
541 "The EEPROM Checksum Is Not Valid\n");
542 error = EIO;
543 goto failed;
544 }
545 }
546
547 /* Copy the permanent MAC address out of the EEPROM */
548 if (e1000_read_mac_addr(&sc->hw) < 0) {
549 device_printf(dev, "EEPROM read error while reading MAC"
550 " address\n");
551 error = EIO;
552 goto failed;
553 }
554 if (!igb_is_valid_ether_addr(sc->hw.mac.addr)) {
555 device_printf(dev, "Invalid MAC address\n");
556 error = EIO;
557 goto failed;
558 }
559
560#ifdef notyet
561 /*
562 ** Configure Interrupts
563 */
564 if ((adapter->msix > 1) && (igb_enable_msix))
565 error = igb_allocate_msix(adapter);
566 else /* MSI or Legacy */
567 error = igb_allocate_legacy(adapter);
568 if (error)
569 goto err_late;
570#endif
571
572 /* Setup OS specific network interface */
573 igb_setup_ifp(sc);
574
575 /* Add sysctl tree, must after igb_setup_ifp() */
576 igb_add_sysctl(sc);
577
578 /* Now get a good starting state */
579 igb_reset(sc);
580
581 /* Initialize statistics */
582 igb_update_stats_counters(sc);
583
584 sc->hw.mac.get_link_status = 1;
585 igb_update_link_status(sc);
586
587 /* Indicate SOL/IDER usage */
588 if (e1000_check_reset_block(&sc->hw)) {
589 device_printf(dev,
590 "PHY reset is blocked due to SOL/IDER session.\n");
591 }
592
593 /* Determine if we have to control management hardware */
396b7048
SZ		 594 if (e1000_enable_mng_pass_thru(&sc->hw))
595 sc->flags |= IGB_FLAG_HAS_MGMT;
1f7e3916
SZ		 596
597 /*
598 * Setup Wake-on-Lan
599 */
600 /* APME bit in EEPROM is mapped to WUC.APME */
601 eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC) & E1000_WUC_APME;
602 if (eeprom_data)
603 sc->wol = E1000_WUFC_MAG;
604 /* XXX disable WOL */
605 sc->wol = 0;
606
607#ifdef notyet
608 /* Register for VLAN events */
609 adapter->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
610 igb_register_vlan, adapter, EVENTHANDLER_PRI_FIRST);
611 adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
612 igb_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST);
613#endif
614
615#ifdef notyet
616 igb_add_hw_stats(adapter);
617#endif
618
f6167a56 619 error = igb_setup_intr(sc);
1f7e3916 620 if (error) {
1f7e3916
SZ		 621 ether_ifdetach(&sc->arpcom.ac_if);
622 goto failed;
623 }
1f7e3916
SZ		 624 return 0;
625
626failed:
627 igb_detach(dev);
628 return error;
629}
630
631static int
632igb_detach(device_t dev)
633{
634 struct igb_softc *sc = device_get_softc(dev);
635
636 if (device_is_attached(dev)) {
637 struct ifnet *ifp = &sc->arpcom.ac_if;
638
639 ifnet_serialize_all(ifp);
640
641 igb_stop(sc);
642
643 e1000_phy_hw_reset(&sc->hw);
644
645 /* Give control back to firmware */
646 igb_rel_mgmt(sc);
647 igb_rel_hw_control(sc);
648
649 if (sc->wol) {
650 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
651 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
652 igb_enable_wol(dev);
653 }
654
9c0ecdcc 655 igb_teardown_intr(sc);
1f7e3916
SZ		 656
657 ifnet_deserialize_all(ifp);
658
659 ether_ifdetach(ifp);
660 } else if (sc->mem_res != NULL) {
661 igb_rel_hw_control(sc);
662 }
663 bus_generic_detach(dev);
664
9c0ecdcc
SZ		 665 if (sc->sysctl_tree != NULL)
666 sysctl_ctx_free(&sc->sysctl_ctx);
667
3c7cc5e2 668 igb_free_intr(sc);
1f7e3916 669
9c0ecdcc
SZ		 670 if (sc->msix_mem_res != NULL) {
671 bus_release_resource(dev, SYS_RES_MEMORY, sc->msix_mem_rid,
672 sc->msix_mem_res);
673 }
1f7e3916
SZ		 674 if (sc->mem_res != NULL) {
675 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
676 sc->mem_res);
677 }
678
a619b256 679 igb_free_rings(sc);
1f7e3916
SZ		 680
681 if (sc->mta != NULL)
682 kfree(sc->mta, M_DEVBUF);
683 if (sc->stats != NULL)
684 kfree(sc->stats, M_DEVBUF);
685
1f7e3916
SZ		 686 return 0;
687}
688
689static int
690igb_shutdown(device_t dev)
691{
692 return igb_suspend(dev);
693}
694
695static int
696igb_suspend(device_t dev)
697{
698 struct igb_softc *sc = device_get_softc(dev);
699 struct ifnet *ifp = &sc->arpcom.ac_if;
700
701 ifnet_serialize_all(ifp);
702
703 igb_stop(sc);
704
705 igb_rel_mgmt(sc);
706 igb_rel_hw_control(sc);
707
708 if (sc->wol) {
709 E1000_WRITE_REG(&sc->hw, E1000_WUC, E1000_WUC_PME_EN);
710 E1000_WRITE_REG(&sc->hw, E1000_WUFC, sc->wol);
711 igb_enable_wol(dev);
712 }
713
714 ifnet_deserialize_all(ifp);
715
716 return bus_generic_suspend(dev);
717}
718
719static int
720igb_resume(device_t dev)
721{
722 struct igb_softc *sc = device_get_softc(dev);
723 struct ifnet *ifp = &sc->arpcom.ac_if;
724
725 ifnet_serialize_all(ifp);
726
727 igb_init(sc);
728 igb_get_mgmt(sc);
729
730 if_devstart(ifp);
731
732 ifnet_deserialize_all(ifp);
733
734 return bus_generic_resume(dev);
735}
736
737static int
738igb_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
739{
740 struct igb_softc *sc = ifp->if_softc;
741 struct ifreq *ifr = (struct ifreq *)data;
742 int max_frame_size, mask, reinit;
743 int error = 0;
744
745 ASSERT_IFNET_SERIALIZED_ALL(ifp);
746
747 switch (command) {
748 case SIOCSIFMTU:
749 max_frame_size = 9234;
750 if (ifr->ifr_mtu > max_frame_size - ETHER_HDR_LEN -
751 ETHER_CRC_LEN) {
752 error = EINVAL;
753 break;
754 }
755
756 ifp->if_mtu = ifr->ifr_mtu;
757 sc->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN +
758 ETHER_CRC_LEN;
759
760 if (ifp->if_flags & IFF_RUNNING)
761 igb_init(sc);
762 break;
763
764 case SIOCSIFFLAGS:
765 if (ifp->if_flags & IFF_UP) {
766 if (ifp->if_flags & IFF_RUNNING) {
767 if ((ifp->if_flags ^ sc->if_flags) &
768 (IFF_PROMISC | IFF_ALLMULTI)) {
769 igb_disable_promisc(sc);
770 igb_set_promisc(sc);
771 }
772 } else {
773 igb_init(sc);
774 }
775 } else if (ifp->if_flags & IFF_RUNNING) {
776 igb_stop(sc);
777 }
778 sc->if_flags = ifp->if_flags;
779 break;
780
781 case SIOCADDMULTI:
782 case SIOCDELMULTI:
783 if (ifp->if_flags & IFF_RUNNING) {
784 igb_disable_intr(sc);
785 igb_set_multi(sc);
786#ifdef DEVICE_POLLING
787 if (!(ifp->if_flags & IFF_POLLING))
788#endif
789 igb_enable_intr(sc);
790 }
791 break;
792
793 case SIOCSIFMEDIA:
794 /*
795 * As the speed/duplex settings are being
796 * changed, we need toreset the PHY.
797 */
798 sc->hw.phy.reset_disable = FALSE;
799
800 /* Check SOL/IDER usage */
801 if (e1000_check_reset_block(&sc->hw)) {
802 if_printf(ifp, "Media change is "
803 "blocked due to SOL/IDER session.\n");
804 break;
805 }
806 /* FALL THROUGH */
807
808 case SIOCGIFMEDIA:
809 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
810 break;
811
812 case SIOCSIFCAP:
813 reinit = 0;
814 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
77d8cab9
SZ		 815 if (mask & IFCAP_RXCSUM) {
816 ifp->if_capenable ^= IFCAP_RXCSUM;
1f7e3916
SZ		 817 reinit = 1;
818 }
819 if (mask & IFCAP_VLAN_HWTAGGING) {
820 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
821 reinit = 1;
822 }
77d8cab9
SZ		 823 if (mask & IFCAP_TXCSUM) {
824 ifp->if_capenable ^= IFCAP_TXCSUM;
825 if (ifp->if_capenable & IFCAP_TXCSUM)
826 ifp->if_hwassist |= IGB_CSUM_FEATURES;
827 else
828 ifp->if_hwassist &= ~IGB_CSUM_FEATURES;
829 }
23f6ffe4
SZ		 830 if (mask & IFCAP_TSO) {
831 ifp->if_capenable ^= IFCAP_TSO;
832 if (ifp->if_capenable & IFCAP_TSO)
833 ifp->if_hwassist |= CSUM_TSO;
834 else
835 ifp->if_hwassist &= ~CSUM_TSO;
836 }
8d6600da
SZ		 837 if (mask & IFCAP_RSS)
838 ifp->if_capenable ^= IFCAP_RSS;
1f7e3916
SZ		 839 if (reinit && (ifp->if_flags & IFF_RUNNING))
840 igb_init(sc);
841 break;
842
843 default:
844 error = ether_ioctl(ifp, command, data);
845 break;
846 }
847 return error;
848}
849
850static void
851igb_init(void *xsc)
852{
853 struct igb_softc *sc = xsc;
854 struct ifnet *ifp = &sc->arpcom.ac_if;
9c0ecdcc 855 boolean_t polling;
1f7e3916
SZ		 856 int i;
857
858 ASSERT_IFNET_SERIALIZED_ALL(ifp);
859
860 igb_stop(sc);
861
862 /* Get the latest mac address, User can use a LAA */
863 bcopy(IF_LLADDR(ifp), sc->hw.mac.addr, ETHER_ADDR_LEN);
864
865 /* Put the address into the Receive Address Array */
866 e1000_rar_set(&sc->hw, sc->hw.mac.addr, 0);
867
868 igb_reset(sc);
869 igb_update_link_status(sc);
870
871 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
872
1f7e3916
SZ		 873 /* Configure for OS presence */
874 igb_get_mgmt(sc);
875
9c0ecdcc 876 polling = FALSE;
be922da6 877#ifdef DEVICE_POLLING
9c0ecdcc
SZ		 878 if (ifp->if_flags & IFF_POLLING)
879 polling = TRUE;
be922da6 880#endif
9c0ecdcc
SZ		 881
882 /* Configured used RX/TX rings */
883 igb_set_ring_inuse(sc, polling);
884
885 /* Initialize interrupt */
886 igb_init_intr(sc);
be922da6 887
1f7e3916 888 /* Prepare transmit descriptors and buffers */
27866bf1 889 for (i = 0; i < sc->tx_ring_cnt; ++i)
1f7e3916
SZ		 890 igb_init_tx_ring(&sc->tx_rings[i]);
891 igb_init_tx_unit(sc);
892
893 /* Setup Multicast table */
894 igb_set_multi(sc);
895
896#if 0
897 /*
898 * Figure out the desired mbuf pool
899 * for doing jumbo/packetsplit
900 */
901 if (adapter->max_frame_size <= 2048)
902 adapter->rx_mbuf_sz = MCLBYTES;
903 else if (adapter->max_frame_size <= 4096)
904 adapter->rx_mbuf_sz = MJUMPAGESIZE;
905 else
906 adapter->rx_mbuf_sz = MJUM9BYTES;
1f7e3916
SZ		 907#endif
908
909 /* Prepare receive descriptors and buffers */
be922da6 910 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 911 int error;
912
913 error = igb_init_rx_ring(&sc->rx_rings[i]);
914 if (error) {
915 if_printf(ifp, "Could not setup receive structures\n");
916 igb_stop(sc);
917 return;
918 }
919 }
920 igb_init_rx_unit(sc);
921
922 /* Enable VLAN support */
923 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
924 igb_set_vlan(sc);
925
926 /* Don't lose promiscuous settings */
927 igb_set_promisc(sc);
928
1f7e3916
SZ		 929 ifp->if_flags |= IFF_RUNNING;
930 ifp->if_flags &= ~IFF_OACTIVE;
931
932 callout_reset(&sc->timer, hz, igb_timer, sc);
933 e1000_clear_hw_cntrs_base_generic(&sc->hw);
934
935#if 0
936 if (adapter->msix > 1) /* Set up queue routing */
937 igb_configure_queues(adapter);
938#endif
939
9c0ecdcc 940 /* This clears any pending interrupts */
1f7e3916 941 E1000_READ_REG(&sc->hw, E1000_ICR);
9c0ecdcc 942
1f7e3916
SZ		 943 /*
944 * Only enable interrupts if we are not polling, make sure
945 * they are off otherwise.
946 */
9c0ecdcc 947 if (polling) {
1f7e3916 948 igb_disable_intr(sc);
9c0ecdcc 949 } else {
1f7e3916
SZ		 950 igb_enable_intr(sc);
951 E1000_WRITE_REG(&sc->hw, E1000_ICS, E1000_ICS_LSC);
952 }
953
954 /* Set Energy Efficient Ethernet */
955 e1000_set_eee_i350(&sc->hw);
956
957 /* Don't reset the phy next time init gets called */
958 sc->hw.phy.reset_disable = TRUE;
959}
960
961static void
962igb_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
963{
964 struct igb_softc *sc = ifp->if_softc;
965 u_char fiber_type = IFM_1000_SX;
966
967 ASSERT_IFNET_SERIALIZED_ALL(ifp);
968
969 igb_update_link_status(sc);
970
971 ifmr->ifm_status = IFM_AVALID;
972 ifmr->ifm_active = IFM_ETHER;
973
974 if (!sc->link_active)
975 return;
976
977 ifmr->ifm_status |= IFM_ACTIVE;
978
979 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
980 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
981 ifmr->ifm_active |= fiber_type | IFM_FDX;
982 } else {
983 switch (sc->link_speed) {
984 case 10:
985 ifmr->ifm_active |= IFM_10_T;
986 break;
987
988 case 100:
989 ifmr->ifm_active |= IFM_100_TX;
990 break;
991
992 case 1000:
993 ifmr->ifm_active |= IFM_1000_T;
994 break;
995 }
996 if (sc->link_duplex == FULL_DUPLEX)
997 ifmr->ifm_active |= IFM_FDX;
998 else
999 ifmr->ifm_active |= IFM_HDX;
1000 }
1001}
1002
1003static int
1004igb_media_change(struct ifnet *ifp)
1005{
1006 struct igb_softc *sc = ifp->if_softc;
1007 struct ifmedia *ifm = &sc->media;
1008
1009 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1010
1011 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1012 return EINVAL;
1013
1014 switch (IFM_SUBTYPE(ifm->ifm_media)) {
1015 case IFM_AUTO:
1016 sc->hw.mac.autoneg = DO_AUTO_NEG;
1017 sc->hw.phy.autoneg_advertised = AUTONEG_ADV_DEFAULT;
1018 break;
1019
1020 case IFM_1000_LX:
1021 case IFM_1000_SX:
1022 case IFM_1000_T:
1023 sc->hw.mac.autoneg = DO_AUTO_NEG;
1024 sc->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
1025 break;
1026
1027 case IFM_100_TX:
1028 sc->hw.mac.autoneg = FALSE;
1029 sc->hw.phy.autoneg_advertised = 0;
1030 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1031 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_FULL;
1032 else
1033 sc->hw.mac.forced_speed_duplex = ADVERTISE_100_HALF;
1034 break;
1035
1036 case IFM_10_T:
1037 sc->hw.mac.autoneg = FALSE;
1038 sc->hw.phy.autoneg_advertised = 0;
1039 if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX)
1040 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_FULL;
1041 else
1042 sc->hw.mac.forced_speed_duplex = ADVERTISE_10_HALF;
1043 break;
1044
1045 default:
1046 if_printf(ifp, "Unsupported media type\n");
1047 break;
1048 }
1049
1050 igb_init(sc);
1051
1052 return 0;
1053}
1054
1055static void
1056igb_set_promisc(struct igb_softc *sc)
1057{
1058 struct ifnet *ifp = &sc->arpcom.ac_if;
1059 struct e1000_hw *hw = &sc->hw;
1060 uint32_t reg;
1061
1062 if (sc->vf_ifp) {
1063 e1000_promisc_set_vf(hw, e1000_promisc_enabled);
1064 return;
1065 }
1066
1067 reg = E1000_READ_REG(hw, E1000_RCTL);
1068 if (ifp->if_flags & IFF_PROMISC) {
1069 reg |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1070 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1071 } else if (ifp->if_flags & IFF_ALLMULTI) {
1072 reg |= E1000_RCTL_MPE;
1073 reg &= ~E1000_RCTL_UPE;
1074 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1075 }
1076}
1077
1078static void
1079igb_disable_promisc(struct igb_softc *sc)
1080{
1081 struct e1000_hw *hw = &sc->hw;
1082 uint32_t reg;
1083
1084 if (sc->vf_ifp) {
1085 e1000_promisc_set_vf(hw, e1000_promisc_disabled);
1086 return;
1087 }
1088 reg = E1000_READ_REG(hw, E1000_RCTL);
1089 reg &= ~E1000_RCTL_UPE;
1090 reg &= ~E1000_RCTL_MPE;
1091 E1000_WRITE_REG(hw, E1000_RCTL, reg);
1092}
1093
1094static void
1095igb_set_multi(struct igb_softc *sc)
1096{
1097 struct ifnet *ifp = &sc->arpcom.ac_if;
1098 struct ifmultiaddr *ifma;
1099 uint32_t reg_rctl = 0;
1100 uint8_t *mta;
1101 int mcnt = 0;
1102
1103 mta = sc->mta;
1104 bzero(mta, ETH_ADDR_LEN * MAX_NUM_MULTICAST_ADDRESSES);
1105
1106 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1107 if (ifma->ifma_addr->sa_family != AF_LINK)
1108 continue;
1109
1110 if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
1111 break;
1112
1113 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1114 &mta[mcnt * ETH_ADDR_LEN], ETH_ADDR_LEN);
1115 mcnt++;
1116 }
1117
1118 if (mcnt >= MAX_NUM_MULTICAST_ADDRESSES) {
1119 reg_rctl = E1000_READ_REG(&sc->hw, E1000_RCTL);
1120 reg_rctl |= E1000_RCTL_MPE;
1121 E1000_WRITE_REG(&sc->hw, E1000_RCTL, reg_rctl);
1122 } else {
1123 e1000_update_mc_addr_list(&sc->hw, mta, mcnt);
1124 }
1125}
1126
1127static void
1128igb_timer(void *xsc)
1129{
1130 struct igb_softc *sc = xsc;
1f7e3916 1131
27dd00d6 1132 lwkt_serialize_enter(&sc->main_serialize);
1f7e3916
SZ		 1133
1134 igb_update_link_status(sc);
1135 igb_update_stats_counters(sc);
1136
1137 callout_reset(&sc->timer, hz, igb_timer, sc);
1138
27dd00d6 1139 lwkt_serialize_exit(&sc->main_serialize);
1f7e3916
SZ		 1140}
1141
1142static void
1143igb_update_link_status(struct igb_softc *sc)
1144{
1145 struct ifnet *ifp = &sc->arpcom.ac_if;
1146 struct e1000_hw *hw = &sc->hw;
1147 uint32_t link_check, thstat, ctrl;
1148
1149 link_check = thstat = ctrl = 0;
1150
1151 /* Get the cached link value or read for real */
1152 switch (hw->phy.media_type) {
1153 case e1000_media_type_copper:
1154 if (hw->mac.get_link_status) {
1155 /* Do the work to read phy */
1156 e1000_check_for_link(hw);
1157 link_check = !hw->mac.get_link_status;
1158 } else {
1159 link_check = TRUE;
1160 }
1161 break;
1162
1163 case e1000_media_type_fiber:
1164 e1000_check_for_link(hw);
1165 link_check = E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU;
1166 break;
1167
1168 case e1000_media_type_internal_serdes:
1169 e1000_check_for_link(hw);
1170 link_check = hw->mac.serdes_has_link;
1171 break;
1172
1173 /* VF device is type_unknown */
1174 case e1000_media_type_unknown:
1175 e1000_check_for_link(hw);
1176 link_check = !hw->mac.get_link_status;
1177 /* Fall thru */
1178 default:
1179 break;
1180 }
1181
1182 /* Check for thermal downshift or shutdown */
1183 if (hw->mac.type == e1000_i350) {
1184 thstat = E1000_READ_REG(hw, E1000_THSTAT);
1185 ctrl = E1000_READ_REG(hw, E1000_CTRL_EXT);
1186 }
1187
1188 /* Now we check if a transition has happened */
1189 if (link_check && sc->link_active == 0) {
1190 e1000_get_speed_and_duplex(hw,
1191 &sc->link_speed, &sc->link_duplex);
1192 if (bootverbose) {
1193 if_printf(ifp, "Link is up %d Mbps %s\n",
1194 sc->link_speed,
1195 sc->link_duplex == FULL_DUPLEX ?
1196 "Full Duplex" : "Half Duplex");
1197 }
1198 sc->link_active = 1;
1199
1200 ifp->if_baudrate = sc->link_speed * 1000000;
1201 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1202 (thstat & E1000_THSTAT_LINK_THROTTLE))
1203 if_printf(ifp, "Link: thermal downshift\n");
1204 /* This can sleep */
1205 ifp->if_link_state = LINK_STATE_UP;
1206 if_link_state_change(ifp);
1207 } else if (!link_check && sc->link_active == 1) {
1208 ifp->if_baudrate = sc->link_speed = 0;
1209 sc->link_duplex = 0;
1210 if (bootverbose)
1211 if_printf(ifp, "Link is Down\n");
1212 if ((ctrl & E1000_CTRL_EXT_LINK_MODE_GMII) &&
1213 (thstat & E1000_THSTAT_PWR_DOWN))
1214 if_printf(ifp, "Link: thermal shutdown\n");
1215 sc->link_active = 0;
1216 /* This can sleep */
1217 ifp->if_link_state = LINK_STATE_DOWN;
1218 if_link_state_change(ifp);
1219 }
1220}
1221
1222static void
1223igb_stop(struct igb_softc *sc)
1224{
1225 struct ifnet *ifp = &sc->arpcom.ac_if;
1226 int i;
1227
1228 ASSERT_IFNET_SERIALIZED_ALL(ifp);
1229
1230 igb_disable_intr(sc);
1231
1232 callout_stop(&sc->timer);
1233
1234 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1235 ifp->if_timer = 0;
1236
1237 e1000_reset_hw(&sc->hw);
1238 E1000_WRITE_REG(&sc->hw, E1000_WUC, 0);
1239
1240 e1000_led_off(&sc->hw);
1241 e1000_cleanup_led(&sc->hw);
1242
27866bf1 1243 for (i = 0; i < sc->tx_ring_cnt; ++i)
1f7e3916 1244 igb_free_tx_ring(&sc->tx_rings[i]);
27866bf1 1245 for (i = 0; i < sc->rx_ring_cnt; ++i)
1f7e3916
SZ		 1246 igb_free_rx_ring(&sc->rx_rings[i]);
1247}
1248
1249static void
1250igb_reset(struct igb_softc *sc)
1251{
1252 struct ifnet *ifp = &sc->arpcom.ac_if;
1253 struct e1000_hw *hw = &sc->hw;
1254 struct e1000_fc_info *fc = &hw->fc;
1255 uint32_t pba = 0;
1256 uint16_t hwm;
1257
1258 /* Let the firmware know the OS is in control */
1259 igb_get_hw_control(sc);
1260
1261 /*
1262 * Packet Buffer Allocation (PBA)
1263 * Writing PBA sets the receive portion of the buffer
1264 * the remainder is used for the transmit buffer.
1265 */
1266 switch (hw->mac.type) {
1267 case e1000_82575:
1268 pba = E1000_PBA_32K;
1269 break;
1270
1271 case e1000_82576:
1272 case e1000_vfadapt:
1273 pba = E1000_READ_REG(hw, E1000_RXPBS);
1274 pba &= E1000_RXPBS_SIZE_MASK_82576;
1275 break;
1276
1277 case e1000_82580:
1278 case e1000_i350:
1279 case e1000_vfadapt_i350:
1280 pba = E1000_READ_REG(hw, E1000_RXPBS);
1281 pba = e1000_rxpbs_adjust_82580(pba);
1282 break;
1283 /* XXX pba = E1000_PBA_35K; */
1284
1285 default:
1286 break;
1287 }
1288
1289 /* Special needs in case of Jumbo frames */
1290 if (hw->mac.type == e1000_82575 && ifp->if_mtu > ETHERMTU) {
1291 uint32_t tx_space, min_tx, min_rx;
1292
1293 pba = E1000_READ_REG(hw, E1000_PBA);
1294 tx_space = pba >> 16;
1295 pba &= 0xffff;
1296
1297 min_tx = (sc->max_frame_size +
1298 sizeof(struct e1000_tx_desc) - ETHER_CRC_LEN) * 2;
1299 min_tx = roundup2(min_tx, 1024);
1300 min_tx >>= 10;
1301 min_rx = sc->max_frame_size;
1302 min_rx = roundup2(min_rx, 1024);
1303 min_rx >>= 10;
1304 if (tx_space < min_tx && (min_tx - tx_space) < pba) {
1305 pba = pba - (min_tx - tx_space);
1306 /*
1307 * if short on rx space, rx wins
1308 * and must trump tx adjustment
1309 */
1310 if (pba < min_rx)
1311 pba = min_rx;
1312 }
1313 E1000_WRITE_REG(hw, E1000_PBA, pba);
1314 }
1315
1316 /*
1317 * These parameters control the automatic generation (Tx) and
1318 * response (Rx) to Ethernet PAUSE frames.
1319 * - High water mark should allow for at least two frames to be
1320 * received after sending an XOFF.
1321 * - Low water mark works best when it is very near the high water mark.
1322 * This allows the receiver to restart by sending XON when it has
1323 * drained a bit.
1324 */
1325 hwm = min(((pba << 10) * 9 / 10),
1326 ((pba << 10) - 2 * sc->max_frame_size));
1327
1328 if (hw->mac.type < e1000_82576) {
1329 fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
1330 fc->low_water = fc->high_water - 8;
1331 } else {
1332 fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */
1333 fc->low_water = fc->high_water - 16;
1334 }
1335 fc->pause_time = IGB_FC_PAUSE_TIME;
1336 fc->send_xon = TRUE;
1337
1338 /* Issue a global reset */
1339 e1000_reset_hw(hw);
1340 E1000_WRITE_REG(hw, E1000_WUC, 0);
1341
1342 if (e1000_init_hw(hw) < 0)
1343 if_printf(ifp, "Hardware Initialization Failed\n");
1344
1345 /* Setup DMA Coalescing */
1346 if (hw->mac.type == e1000_i350 && sc->dma_coalesce) {
1347 uint32_t reg;
1348
1349 hwm = (pba - 4) << 10;
1350 reg = ((pba - 6) << E1000_DMACR_DMACTHR_SHIFT)
1351 & E1000_DMACR_DMACTHR_MASK;
1352
1353 /* transition to L0x or L1 if available..*/
1354 reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);
1355
1356 /* timer = +-1000 usec in 32usec intervals */
1357 reg |= (1000 >> 5);
1358 E1000_WRITE_REG(hw, E1000_DMACR, reg);
1359
1360 /* No lower threshold */
1361 E1000_WRITE_REG(hw, E1000_DMCRTRH, 0);
1362
1363 /* set hwm to PBA - 2 * max frame size */
1364 E1000_WRITE_REG(hw, E1000_FCRTC, hwm);
1365
1366 /* Set the interval before transition */
1367 reg = E1000_READ_REG(hw, E1000_DMCTLX);
1368 reg |= 0x800000FF; /* 255 usec */
1369 E1000_WRITE_REG(hw, E1000_DMCTLX, reg);
1370
1371 /* free space in tx packet buffer to wake from DMA coal */
1372 E1000_WRITE_REG(hw, E1000_DMCTXTH,
1373 (20480 - (2 * sc->max_frame_size)) >> 6);
1374
1375 /* make low power state decision controlled by DMA coal */
1376 reg = E1000_READ_REG(hw, E1000_PCIEMISC);
1377 E1000_WRITE_REG(hw, E1000_PCIEMISC,
1378 reg | E1000_PCIEMISC_LX_DECISION);
1379 if_printf(ifp, "DMA Coalescing enabled\n");
1380 }
1381
1382 E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN);
1383 e1000_get_phy_info(hw);
1384 e1000_check_for_link(hw);
1385}
1386
1387static void
1388igb_setup_ifp(struct igb_softc *sc)
1389{
1390 struct ifnet *ifp = &sc->arpcom.ac_if;
1391
1392 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
1393 ifp->if_softc = sc;
1394 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
9c0ecdcc 1395 ifp->if_init = igb_init;
1f7e3916
SZ		 1396 ifp->if_ioctl = igb_ioctl;
1397 ifp->if_start = igb_start;
7d235eb5
SZ		 1398 ifp->if_serialize = igb_serialize;
1399 ifp->if_deserialize = igb_deserialize;
1400 ifp->if_tryserialize = igb_tryserialize;
1401#ifdef INVARIANTS
1402 ifp->if_serialize_assert = igb_serialize_assert;
1403#endif
1f7e3916
SZ		 1404#ifdef DEVICE_POLLING
1405 ifp->if_poll = igb_poll;
1406#endif
1407 ifp->if_watchdog = igb_watchdog;
1408
91b8700a 1409 ifq_set_maxlen(&ifp->if_snd, sc->tx_rings[0].num_tx_desc - 1);
1f7e3916
SZ		 1410 ifq_set_ready(&ifp->if_snd);
1411
1412 ether_ifattach(ifp, sc->hw.mac.addr, NULL);
1413
1414 ifp->if_capabilities =
23f6ffe4 1415 IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_TSO;
8d6600da
SZ		 1416 if (IGB_ENABLE_HWRSS(sc))
1417 ifp->if_capabilities |= IFCAP_RSS;
1f7e3916 1418 ifp->if_capenable = ifp->if_capabilities;
23f6ffe4 1419 ifp->if_hwassist = IGB_CSUM_FEATURES | CSUM_TSO;
1f7e3916
SZ		 1420
1421 /*
1422 * Tell the upper layer(s) we support long frames
1423 */
1424 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1425
1426 /*
1427 * Specify the media types supported by this adapter and register
1428 * callbacks to update media and link information
1429 */
1430 ifmedia_init(&sc->media, IFM_IMASK, igb_media_change, igb_media_status);
1431 if (sc->hw.phy.media_type == e1000_media_type_fiber ||
1432 sc->hw.phy.media_type == e1000_media_type_internal_serdes) {
1433 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
1434 0, NULL);
1435 ifmedia_add(&sc->media, IFM_ETHER | IFM_1000_SX, 0, NULL);
1436 } else {
1437 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T, 0, NULL);
1438 ifmedia_add(&sc->media, IFM_ETHER | IFM_10_T | IFM_FDX,
1439 0, NULL);
1440 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX, 0, NULL);
1441 ifmedia_add(&sc->media, IFM_ETHER | IFM_100_TX | IFM_FDX,
1442 0, NULL);
1443 if (sc->hw.phy.type != e1000_phy_ife) {
1444 ifmedia_add(&sc->media,
1445 IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL);
1446 ifmedia_add(&sc->media,
1447 IFM_ETHER | IFM_1000_T, 0, NULL);
1448 }
1449 }
1450 ifmedia_add(&sc->media, IFM_ETHER | IFM_AUTO, 0, NULL);
1451 ifmedia_set(&sc->media, IFM_ETHER | IFM_AUTO);
1452}
1453
1454static void
1455igb_add_sysctl(struct igb_softc *sc)
1456{
9c0ecdcc 1457 char node[32];
8d6600da 1458 int i;
8d6600da 1459
1f7e3916
SZ		 1460 sysctl_ctx_init(&sc->sysctl_ctx);
1461 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
1462 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1463 device_get_nameunit(sc->dev), CTLFLAG_RD, 0, "");
1464 if (sc->sysctl_tree == NULL) {
1465 device_printf(sc->dev, "can't add sysctl node\n");
1466 return;
1467 }
1468
1469 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
8d6600da 1470 OID_AUTO, "rxr", CTLFLAG_RD, &sc->rx_ring_cnt, 0, "# of RX rings");
be922da6
SZ		 1471 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1472 OID_AUTO, "rxr_inuse", CTLFLAG_RD, &sc->rx_ring_inuse, 0,
1473 "# of RX rings used");
8d6600da
SZ		 1474 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1475 OID_AUTO, "rxd", CTLFLAG_RD, &sc->rx_rings[0].num_rx_desc, 0,
1476 "# of RX descs");
1f7e3916 1477 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
8d6600da
SZ		 1478 OID_AUTO, "txd", CTLFLAG_RD, &sc->tx_rings[0].num_tx_desc, 0,
1479 "# of TX descs");
1f7e3916 1480
9c0ecdcc
SZ		 1481 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
1482 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1483 SYSCTL_CHILDREN(sc->sysctl_tree),
1484 OID_AUTO, "intr_rate", CTLTYPE_INT | CTLFLAG_RW,
1485 sc, 0, igb_sysctl_intr_rate, "I", "interrupt rate");
1486 } else {
1487 for (i = 0; i < sc->msix_cnt; ++i) {
1488 struct igb_msix_data *msix = &sc->msix_data[i];
1489
1490 ksnprintf(node, sizeof(node), "msix%d_rate", i);
1491 SYSCTL_ADD_PROC(&sc->sysctl_ctx,
1492 SYSCTL_CHILDREN(sc->sysctl_tree),
1493 OID_AUTO, node, CTLTYPE_INT | CTLFLAG_RW,
1494 msix, 0, igb_sysctl_msix_rate, "I",
1495 msix->msix_rate_desc);
1496 }
1497 }
b6220144
SZ		 1498
1499 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1500 OID_AUTO, "tx_intr_nsegs", CTLTYPE_INT | CTLFLAG_RW,
1501 sc, 0, igb_sysctl_tx_intr_nsegs, "I",
8d6600da
SZ		 1502 "# of segments per TX interrupt");
1503
1504#ifdef IGB_RSS_DEBUG
1505 SYSCTL_ADD_INT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
1506 OID_AUTO, "rss_debug", CTLFLAG_RW, &sc->rss_debug, 0,
1507 "RSS debug level");
1508 for (i = 0; i < sc->rx_ring_cnt; ++i) {
9c0ecdcc 1509 ksnprintf(node, sizeof(node), "rx%d_pkt", i);
8d6600da 1510 SYSCTL_ADD_ULONG(&sc->sysctl_ctx,
9c0ecdcc 1511 SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, node,
8d6600da
SZ		 1512 CTLFLAG_RW, &sc->rx_rings[i].rx_packets, "RXed packets");
1513 }
1514#endif
1f7e3916
SZ		 1515}
1516
1517static int
a619b256 1518igb_alloc_rings(struct igb_softc *sc)
1f7e3916
SZ		 1519{
1520 int error, i;
1521
1f7e3916
SZ		 1522 /*
1523 * Create top level busdma tag
1524 */
1525 error = bus_dma_tag_create(NULL, 1, 0,
1526 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
1527 BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
1528 &sc->parent_tag);
1529 if (error) {
1530 device_printf(sc->dev, "could not create top level DMA tag\n");
1531 return error;
1532 }
1533
1534 /*
1535 * Allocate TX descriptor rings and buffers
1536 */
27866bf1 1537 sc->tx_rings = kmalloc(sizeof(struct igb_tx_ring) * sc->tx_ring_cnt,
1f7e3916 1538 M_DEVBUF, M_WAITOK | M_ZERO);
27866bf1 1539 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1f7e3916
SZ		 1540 struct igb_tx_ring *txr = &sc->tx_rings[i];
1541
1542 /* Set up some basics */
1543 txr->sc = sc;
1544 txr->me = i;
7d235eb5 1545 lwkt_serialize_init(&txr->tx_serialize);
1f7e3916
SZ		 1546
1547 error = igb_create_tx_ring(txr);
1548 if (error)
1549 return error;
1550 }
1551
1552 /*
1553 * Allocate RX descriptor rings and buffers
1554 */
27866bf1 1555 sc->rx_rings = kmalloc(sizeof(struct igb_rx_ring) * sc->rx_ring_cnt,
1f7e3916 1556 M_DEVBUF, M_WAITOK | M_ZERO);
27866bf1 1557 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1f7e3916
SZ		 1558 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1559
1560 /* Set up some basics */
1561 rxr->sc = sc;
1562 rxr->me = i;
7d235eb5 1563 lwkt_serialize_init(&rxr->rx_serialize);
1f7e3916
SZ		 1564
1565 error = igb_create_rx_ring(rxr);
1566 if (error)
1567 return error;
1568 }
1569
1f7e3916
SZ		 1570 return 0;
1571}
1572
1573static void
a619b256 1574igb_free_rings(struct igb_softc *sc)
1f7e3916
SZ		 1575{
1576 int i;
1577
1f7e3916 1578 if (sc->tx_rings != NULL) {
91b8700a
SZ		 1579 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1580 struct igb_tx_ring *txr = &sc->tx_rings[i];
1581
1582 igb_destroy_tx_ring(txr, txr->num_tx_desc);
1583 }
1f7e3916
SZ		 1584 kfree(sc->tx_rings, M_DEVBUF);
1585 }
1586
1587 if (sc->rx_rings != NULL) {
91b8700a
SZ		 1588 for (i = 0; i < sc->rx_ring_cnt; ++i) {
1589 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1590
1591 igb_destroy_rx_ring(rxr, rxr->num_rx_desc);
1592 }
1f7e3916
SZ		 1593 kfree(sc->rx_rings, M_DEVBUF);
1594 }
1595}
1596
1597static int
1598igb_create_tx_ring(struct igb_tx_ring *txr)
1599{
1600 int tsize, error, i;
1601
1602 /*
1603 * Validate number of transmit descriptors. It must not exceed
1604 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1605 */
1606 if (((igb_txd * sizeof(struct e1000_tx_desc)) % IGB_DBA_ALIGN) != 0 ||
1607 (igb_txd > IGB_MAX_TXD) || (igb_txd < IGB_MIN_TXD)) {
1608 device_printf(txr->sc->dev,
1609 "Using %d TX descriptors instead of %d!\n",
1610 IGB_DEFAULT_TXD, igb_txd);
91b8700a 1611 txr->num_tx_desc = IGB_DEFAULT_TXD;
1f7e3916 1612 } else {
91b8700a 1613 txr->num_tx_desc = igb_txd;
1f7e3916
SZ		 1614 }
1615
1616 /*
1617 * Allocate TX descriptor ring
1618 */
91b8700a 1619 tsize = roundup2(txr->num_tx_desc * sizeof(union e1000_adv_tx_desc),
1f7e3916
SZ		 1620 IGB_DBA_ALIGN);
1621 txr->txdma.dma_vaddr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1622 IGB_DBA_ALIGN, tsize, BUS_DMA_WAITOK,
1623 &txr->txdma.dma_tag, &txr->txdma.dma_map, &txr->txdma.dma_paddr);
1624 if (txr->txdma.dma_vaddr == NULL) {
1625 device_printf(txr->sc->dev,
1626 "Unable to allocate TX Descriptor memory\n");
1627 return ENOMEM;
1628 }
1629 txr->tx_base = txr->txdma.dma_vaddr;
1630 bzero(txr->tx_base, tsize);
1631
91b8700a 1632 txr->tx_buf = kmalloc(sizeof(struct igb_tx_buf) * txr->num_tx_desc,
1f7e3916
SZ		 1633 M_DEVBUF, M_WAITOK | M_ZERO);
1634
b6220144
SZ		 1635 /*
1636 * Allocate TX head write-back buffer
1637 */
1638 txr->tx_hdr = bus_dmamem_coherent_any(txr->sc->parent_tag,
1639 __VM_CACHELINE_SIZE, __VM_CACHELINE_SIZE, BUS_DMA_WAITOK,
1640 &txr->tx_hdr_dtag, &txr->tx_hdr_dmap, &txr->tx_hdr_paddr);
1641 if (txr->tx_hdr == NULL) {
1642 device_printf(txr->sc->dev,
1643 "Unable to allocate TX head write-back buffer\n");
1644 return ENOMEM;
1645 }
1646
1f7e3916
SZ		 1647 /*
1648 * Create DMA tag for TX buffers
1649 */
1650 error = bus_dma_tag_create(txr->sc->parent_tag,
1651 1, 0, /* alignment, bounds */
1652 BUS_SPACE_MAXADDR, /* lowaddr */
1653 BUS_SPACE_MAXADDR, /* highaddr */
1654 NULL, NULL, /* filter, filterarg */
1655 IGB_TSO_SIZE, /* maxsize */
1656 IGB_MAX_SCATTER, /* nsegments */
1657 PAGE_SIZE, /* maxsegsize */
1658 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW |
1659 BUS_DMA_ONEBPAGE, /* flags */
1660 &txr->tx_tag);
1661 if (error) {
1662 device_printf(txr->sc->dev, "Unable to allocate TX DMA tag\n");
1663 kfree(txr->tx_buf, M_DEVBUF);
1664 txr->tx_buf = NULL;
1665 return error;
1666 }
1667
1668 /*
1669 * Create DMA maps for TX buffers
1670 */
91b8700a 1671 for (i = 0; i < txr->num_tx_desc; ++i) {
1f7e3916
SZ		 1672 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1673
1674 error = bus_dmamap_create(txr->tx_tag,
1675 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, &txbuf->map);
1676 if (error) {
1677 device_printf(txr->sc->dev,
1678 "Unable to create TX DMA map\n");
1679 igb_destroy_tx_ring(txr, i);
1680 return error;
1681 }
1682 }
b6220144
SZ		 1683
1684 /*
1685 * Initialize various watermark
1686 */
1687 txr->spare_desc = IGB_TX_SPARE;
91b8700a
SZ		 1688 txr->intr_nsegs = txr->num_tx_desc / 16;
1689 txr->oact_hi_desc = txr->num_tx_desc / 2;
1690 txr->oact_lo_desc = txr->num_tx_desc / 8;
b6220144
SZ		 1691 if (txr->oact_lo_desc > IGB_TX_OACTIVE_MAX)
1692 txr->oact_lo_desc = IGB_TX_OACTIVE_MAX;
1693 if (txr->oact_lo_desc < txr->spare_desc + IGB_TX_RESERVED)
1694 txr->oact_lo_desc = txr->spare_desc + IGB_TX_RESERVED;
1695
1f7e3916
SZ		 1696 return 0;
1697}
1698
1699static void
1700igb_free_tx_ring(struct igb_tx_ring *txr)
1701{
1702 int i;
1703
91b8700a 1704 for (i = 0; i < txr->num_tx_desc; ++i) {
1f7e3916
SZ		 1705 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1706
1707 if (txbuf->m_head != NULL) {
1708 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1709 m_freem(txbuf->m_head);
1710 txbuf->m_head = NULL;
1711 }
1712 }
1713}
1714
1715static void
1716igb_destroy_tx_ring(struct igb_tx_ring *txr, int ndesc)
1717{
1718 int i;
1719
1720 if (txr->txdma.dma_vaddr != NULL) {
1721 bus_dmamap_unload(txr->txdma.dma_tag, txr->txdma.dma_map);
1722 bus_dmamem_free(txr->txdma.dma_tag, txr->txdma.dma_vaddr,
1723 txr->txdma.dma_map);
1724 bus_dma_tag_destroy(txr->txdma.dma_tag);
1725 txr->txdma.dma_vaddr = NULL;
1726 }
1727
b6220144
SZ		 1728 if (txr->tx_hdr != NULL) {
1729 bus_dmamap_unload(txr->tx_hdr_dtag, txr->tx_hdr_dmap);
1730 bus_dmamem_free(txr->tx_hdr_dtag, txr->tx_hdr,
1731 txr->tx_hdr_dmap);
1732 bus_dma_tag_destroy(txr->tx_hdr_dtag);
1733 txr->tx_hdr = NULL;
1734 }
1735
1f7e3916
SZ		 1736 if (txr->tx_buf == NULL)
1737 return;
1738
1739 for (i = 0; i < ndesc; ++i) {
1740 struct igb_tx_buf *txbuf = &txr->tx_buf[i];
1741
1742 KKASSERT(txbuf->m_head == NULL);
1743 bus_dmamap_destroy(txr->tx_tag, txbuf->map);
1744 }
1745 bus_dma_tag_destroy(txr->tx_tag);
1746
1747 kfree(txr->tx_buf, M_DEVBUF);
1748 txr->tx_buf = NULL;
1749}
1750
1751static void
1752igb_init_tx_ring(struct igb_tx_ring *txr)
1753{
1f7e3916
SZ		 1754 /* Clear the old descriptor contents */
1755 bzero(txr->tx_base,
91b8700a 1756 sizeof(union e1000_adv_tx_desc) * txr->num_tx_desc);
1f7e3916 1757
b6220144
SZ		 1758 /* Clear TX head write-back buffer */
1759 *(txr->tx_hdr) = 0;
1760
1f7e3916
SZ		 1761 /* Reset indices */
1762 txr->next_avail_desc = 0;
1763 txr->next_to_clean = 0;
b6220144 1764 txr->tx_nsegs = 0;
1f7e3916
SZ		 1765
1766 /* Set number of descriptors available */
91b8700a 1767 txr->tx_avail = txr->num_tx_desc;
1f7e3916
SZ		 1768}
1769
1770static void
1771igb_init_tx_unit(struct igb_softc *sc)
1772{
1773 struct e1000_hw *hw = &sc->hw;
1774 uint32_t tctl;
1775 int i;
1776
1777 /* Setup the Tx Descriptor Rings */
27866bf1 1778 for (i = 0; i < sc->tx_ring_cnt; ++i) {
1f7e3916
SZ		 1779 struct igb_tx_ring *txr = &sc->tx_rings[i];
1780 uint64_t bus_addr = txr->txdma.dma_paddr;
c3162c4e 1781 uint64_t hdr_paddr = txr->tx_hdr_paddr;
1f7e3916 1782 uint32_t txdctl = 0;
b6220144 1783 uint32_t dca_txctrl;
1f7e3916
SZ		 1784
1785 E1000_WRITE_REG(hw, E1000_TDLEN(i),
91b8700a 1786 txr->num_tx_desc * sizeof(struct e1000_tx_desc));
1f7e3916
SZ		 1787 E1000_WRITE_REG(hw, E1000_TDBAH(i),
1788 (uint32_t)(bus_addr >> 32));
1789 E1000_WRITE_REG(hw, E1000_TDBAL(i),
1790 (uint32_t)bus_addr);
1791
1792 /* Setup the HW Tx Head and Tail descriptor pointers */
1793 E1000_WRITE_REG(hw, E1000_TDT(i), 0);
1794 E1000_WRITE_REG(hw, E1000_TDH(i), 0);
1795
54691ff1
SZ		 1796 /*
1797 * WTHRESH is ignored by the hardware, since header
1798 * write back mode is used.
1799 */
1f7e3916
SZ		 1800 txdctl |= IGB_TX_PTHRESH;
1801 txdctl |= IGB_TX_HTHRESH << 8;
1802 txdctl |= IGB_TX_WTHRESH << 16;
1803 txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
1804 E1000_WRITE_REG(hw, E1000_TXDCTL(i), txdctl);
b6220144
SZ		 1805
1806 dca_txctrl = E1000_READ_REG(hw, E1000_DCA_TXCTRL(i));
1807 dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
1808 E1000_WRITE_REG(hw, E1000_DCA_TXCTRL(i), dca_txctrl);
1809
54691ff1
SZ		 1810 /*
1811 * Don't set WB_on_EITR:
1812 * - 82575 does not have it
1813 * - It almost has no effect on 82576, see:
1814 * 82576 specification update errata #26
1815 * - It causes unnecessary bus traffic
1816 */
b6220144 1817 E1000_WRITE_REG(hw, E1000_TDWBAH(i),
c3162c4e 1818 (uint32_t)(hdr_paddr >> 32));
b6220144 1819 E1000_WRITE_REG(hw, E1000_TDWBAL(i),
c3162c4e 1820 ((uint32_t)hdr_paddr) | E1000_TX_HEAD_WB_ENABLE);
1f7e3916
SZ		 1821 }
1822
1823 if (sc->vf_ifp)
1824 return;
1825
1826 e1000_config_collision_dist(hw);
1827
1828 /* Program the Transmit Control Register */
1829 tctl = E1000_READ_REG(hw, E1000_TCTL);
1830 tctl &= ~E1000_TCTL_CT;
1831 tctl |= (E1000_TCTL_PSP | E1000_TCTL_RTLC | E1000_TCTL_EN |
1832 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT));
1833
1834 /* This write will effectively turn on the transmit unit. */
1835 E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1836}
1837
1838static boolean_t
48faa653 1839igb_txcsum_ctx(struct igb_tx_ring *txr, struct mbuf *mp)
1f7e3916
SZ		 1840{
1841 struct e1000_adv_tx_context_desc *TXD;
1f7e3916 1842 uint32_t vlan_macip_lens, type_tucmd_mlhl, mss_l4len_idx;
1f7e3916 1843 int ehdrlen, ctxd, ip_hlen = 0;
1f7e3916
SZ		 1844 boolean_t offload = TRUE;
1845
1846 if ((mp->m_pkthdr.csum_flags & IGB_CSUM_FEATURES) == 0)
1847 offload = FALSE;
1848
1849 vlan_macip_lens = type_tucmd_mlhl = mss_l4len_idx = 0;
48faa653 1850
1f7e3916 1851 ctxd = txr->next_avail_desc;
1f7e3916
SZ		 1852 TXD = (struct e1000_adv_tx_context_desc *)&txr->tx_base[ctxd];
1853
1854 /*
1855 * In advanced descriptors the vlan tag must
1856 * be placed into the context descriptor, thus
1857 * we need to be here just for that setup.
1858 */
1859 if (mp->m_flags & M_VLANTAG) {
23f6ffe4
SZ		 1860 uint16_t vlantag;
1861
1f7e3916
SZ		 1862 vlantag = htole16(mp->m_pkthdr.ether_vlantag);
1863 vlan_macip_lens |= (vlantag << E1000_ADVTXD_VLAN_SHIFT);
1864 } else if (!offload) {
1865 return FALSE;
1866 }
1867
48faa653
SZ		 1868 ehdrlen = mp->m_pkthdr.csum_lhlen;
1869 KASSERT(ehdrlen > 0, ("invalid ether hlen"));
1f7e3916
SZ		 1870
1871 /* Set the ether header length */
1872 vlan_macip_lens |= ehdrlen << E1000_ADVTXD_MACLEN_SHIFT;
48faa653
SZ		 1873 if (mp->m_pkthdr.csum_flags & CSUM_IP) {
1874 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_IPV4;
1875 ip_hlen = mp->m_pkthdr.csum_iphlen;
1876 KASSERT(ip_hlen > 0, ("invalid ip hlen"));
1f7e3916 1877 }
1f7e3916 1878 vlan_macip_lens |= ip_hlen;
1f7e3916 1879
23f6ffe4 1880 type_tucmd_mlhl |= E1000_ADVTXD_DCMD_DEXT | E1000_ADVTXD_DTYP_CTXT;
1f7e3916
SZ		 1881 if (mp->m_pkthdr.csum_flags & CSUM_TCP)
1882 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_TCP;
1883 else if (mp->m_pkthdr.csum_flags & CSUM_UDP)
1884 type_tucmd_mlhl |= E1000_ADVTXD_TUCMD_L4T_UDP;
1885
1886 /* 82575 needs the queue index added */
1887 if (txr->sc->hw.mac.type == e1000_82575)
1888 mss_l4len_idx = txr->me << 4;
1889
1890 /* Now copy bits into descriptor */
1891 TXD->vlan_macip_lens = htole32(vlan_macip_lens);
1892 TXD->type_tucmd_mlhl = htole32(type_tucmd_mlhl);
1893 TXD->seqnum_seed = htole32(0);
1894 TXD->mss_l4len_idx = htole32(mss_l4len_idx);
1895
1f7e3916 1896 /* We've consumed the first desc, adjust counters */
91b8700a 1897 if (++ctxd == txr->num_tx_desc)
1f7e3916
SZ		 1898 ctxd = 0;
1899 txr->next_avail_desc = ctxd;
1900 --txr->tx_avail;
1901
1902 return offload;
1903}
1904
1905static void
1906igb_txeof(struct igb_tx_ring *txr)
1907{
1908 struct ifnet *ifp = &txr->sc->arpcom.ac_if;
b6220144 1909 int first, hdr, avail;
1f7e3916 1910
91b8700a 1911 if (txr->tx_avail == txr->num_tx_desc)
1f7e3916
SZ		 1912 return;
1913
1914 first = txr->next_to_clean;
b6220144 1915 hdr = *(txr->tx_hdr);
1f7e3916 1916
b6220144
SZ		 1917 if (first == hdr)
1918 return;
1f7e3916 1919
b6220144
SZ		 1920 avail = txr->tx_avail;
1921 while (first != hdr) {
1922 struct igb_tx_buf *txbuf = &txr->tx_buf[first];
1f7e3916 1923
b6220144
SZ		 1924 ++avail;
1925 if (txbuf->m_head) {
1926 bus_dmamap_unload(txr->tx_tag, txbuf->map);
1927 m_freem(txbuf->m_head);
1928 txbuf->m_head = NULL;
1929 ++ifp->if_opackets;
1f7e3916 1930 }
91b8700a 1931 if (++first == txr->num_tx_desc)
b6220144 1932 first = 0;
1f7e3916
SZ		 1933 }
1934 txr->next_to_clean = first;
b6220144 1935 txr->tx_avail = avail;
1f7e3916
SZ		 1936
1937 /*
1938 * If we have a minimum free, clear IFF_OACTIVE
1939 * to tell the stack that it is OK to send packets.
1940 */
b6220144 1941 if (IGB_IS_NOT_OACTIVE(txr)) {
1f7e3916
SZ		 1942 ifp->if_flags &= ~IFF_OACTIVE;
1943
1f7e3916
SZ		 1944 /*
1945 * We have enough TX descriptors, turn off
b6220144
SZ		 1946 * the watchdog. We allow small amount of
1947 * packets (roughly intr_nsegs) pending on
1948 * the transmit ring.
1f7e3916
SZ		 1949 */
1950 ifp->if_timer = 0;
1f7e3916
SZ		 1951 }
1952}
1953
1954static int
1955igb_create_rx_ring(struct igb_rx_ring *rxr)
1956{
1957 int rsize, i, error;
1958
1959 /*
1960 * Validate number of receive descriptors. It must not exceed
1961 * hardware maximum, and must be multiple of IGB_DBA_ALIGN.
1962 */
1963 if (((igb_rxd * sizeof(struct e1000_rx_desc)) % IGB_DBA_ALIGN) != 0 ||
1964 (igb_rxd > IGB_MAX_RXD) || (igb_rxd < IGB_MIN_RXD)) {
1965 device_printf(rxr->sc->dev,
1966 "Using %d RX descriptors instead of %d!\n",
1967 IGB_DEFAULT_RXD, igb_rxd);
91b8700a 1968 rxr->num_rx_desc = IGB_DEFAULT_RXD;
1f7e3916 1969 } else {
91b8700a 1970 rxr->num_rx_desc = igb_rxd;
1f7e3916
SZ		 1971 }
1972
1973 /*
1974 * Allocate RX descriptor ring
1975 */
91b8700a 1976 rsize = roundup2(rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc),
1f7e3916
SZ		 1977 IGB_DBA_ALIGN);
1978 rxr->rxdma.dma_vaddr = bus_dmamem_coherent_any(rxr->sc->parent_tag,
1979 IGB_DBA_ALIGN, rsize, BUS_DMA_WAITOK,
1980 &rxr->rxdma.dma_tag, &rxr->rxdma.dma_map,
1981 &rxr->rxdma.dma_paddr);
1982 if (rxr->rxdma.dma_vaddr == NULL) {
1983 device_printf(rxr->sc->dev,
1984 "Unable to allocate RxDescriptor memory\n");
1985 return ENOMEM;
1986 }
1987 rxr->rx_base = rxr->rxdma.dma_vaddr;
1988 bzero(rxr->rx_base, rsize);
1989
91b8700a 1990 rxr->rx_buf = kmalloc(sizeof(struct igb_rx_buf) * rxr->num_rx_desc,
1f7e3916
SZ		 1991 M_DEVBUF, M_WAITOK | M_ZERO);
1992
1993 /*
1994 * Create DMA tag for RX buffers
1995 */
1996 error = bus_dma_tag_create(rxr->sc->parent_tag,
1997 1, 0, /* alignment, bounds */
1998 BUS_SPACE_MAXADDR, /* lowaddr */
1999 BUS_SPACE_MAXADDR, /* highaddr */
2000 NULL, NULL, /* filter, filterarg */
2001 MCLBYTES, /* maxsize */
2002 1, /* nsegments */
2003 MCLBYTES, /* maxsegsize */
2004 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, /* flags */
2005 &rxr->rx_tag);
2006 if (error) {
2007 device_printf(rxr->sc->dev,
2008 "Unable to create RX payload DMA tag\n");
2009 kfree(rxr->rx_buf, M_DEVBUF);
2010 rxr->rx_buf = NULL;
2011 return error;
2012 }
2013
2014 /*
2015 * Create spare DMA map for RX buffers
2016 */
2017 error = bus_dmamap_create(rxr->rx_tag, BUS_DMA_WAITOK,
2018 &rxr->rx_sparemap);
2019 if (error) {
2020 device_printf(rxr->sc->dev,
2021 "Unable to create spare RX DMA maps\n");
2022 bus_dma_tag_destroy(rxr->rx_tag);
2023 kfree(rxr->rx_buf, M_DEVBUF);
2024 rxr->rx_buf = NULL;
2025 return error;
2026 }
2027
2028 /*
2029 * Create DMA maps for RX buffers
2030 */
91b8700a 2031 for (i = 0; i < rxr->num_rx_desc; i++) {
1f7e3916
SZ		 2032 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2033
2034 error = bus_dmamap_create(rxr->rx_tag,
2035 BUS_DMA_WAITOK, &rxbuf->map);
2036 if (error) {
2037 device_printf(rxr->sc->dev,
2038 "Unable to create RX DMA maps\n");
2039 igb_destroy_rx_ring(rxr, i);
2040 return error;
2041 }
2042 }
2043 return 0;
2044}
2045
2046static void
2047igb_free_rx_ring(struct igb_rx_ring *rxr)
2048{
2049 int i;
2050
91b8700a 2051 for (i = 0; i < rxr->num_rx_desc; ++i) {
1f7e3916
SZ		 2052 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2053
2054 if (rxbuf->m_head != NULL) {
2055 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2056 m_freem(rxbuf->m_head);
2057 rxbuf->m_head = NULL;
2058 }
2059 }
2060
2061 if (rxr->fmp != NULL)
2062 m_freem(rxr->fmp);
2063 rxr->fmp = NULL;
2064 rxr->lmp = NULL;
2065}
2066
2067static void
2068igb_destroy_rx_ring(struct igb_rx_ring *rxr, int ndesc)
2069{
2070 int i;
2071
2072 if (rxr->rxdma.dma_vaddr != NULL) {
2073 bus_dmamap_unload(rxr->rxdma.dma_tag, rxr->rxdma.dma_map);
2074 bus_dmamem_free(rxr->rxdma.dma_tag, rxr->rxdma.dma_vaddr,
2075 rxr->rxdma.dma_map);
2076 bus_dma_tag_destroy(rxr->rxdma.dma_tag);
2077 rxr->rxdma.dma_vaddr = NULL;
2078 }
2079
2080 if (rxr->rx_buf == NULL)
2081 return;
2082
2083 for (i = 0; i < ndesc; ++i) {
2084 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2085
2086 KKASSERT(rxbuf->m_head == NULL);
2087 bus_dmamap_destroy(rxr->rx_tag, rxbuf->map);
2088 }
2089 bus_dmamap_destroy(rxr->rx_tag, rxr->rx_sparemap);
2090 bus_dma_tag_destroy(rxr->rx_tag);
2091
2092 kfree(rxr->rx_buf, M_DEVBUF);
2093 rxr->rx_buf = NULL;
2094}
2095
2096static void
2097igb_setup_rxdesc(union e1000_adv_rx_desc *rxd, const struct igb_rx_buf *rxbuf)
2098{
2099 rxd->read.pkt_addr = htole64(rxbuf->paddr);
2100 rxd->wb.upper.status_error = 0;
2101}
2102
2103static int
2104igb_newbuf(struct igb_rx_ring *rxr, int i, boolean_t wait)
2105{
2106 struct mbuf *m;
2107 bus_dma_segment_t seg;
2108 bus_dmamap_t map;
2109 struct igb_rx_buf *rxbuf;
2110 int error, nseg;
2111
2112 m = m_getcl(wait ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2113 if (m == NULL) {
2114 if (wait) {
2115 if_printf(&rxr->sc->arpcom.ac_if,
2116 "Unable to allocate RX mbuf\n");
2117 }
2118 return ENOBUFS;
2119 }
2120 m->m_len = m->m_pkthdr.len = MCLBYTES;
2121
2122 if (rxr->sc->max_frame_size <= MCLBYTES - ETHER_ALIGN)
2123 m_adj(m, ETHER_ALIGN);
2124
2125 error = bus_dmamap_load_mbuf_segment(rxr->rx_tag,
2126 rxr->rx_sparemap, m, &seg, 1, &nseg, BUS_DMA_NOWAIT);
2127 if (error) {
2128 m_freem(m);
2129 if (wait) {
2130 if_printf(&rxr->sc->arpcom.ac_if,
2131 "Unable to load RX mbuf\n");
2132 }
2133 return error;
2134 }
2135
2136 rxbuf = &rxr->rx_buf[i];
2137 if (rxbuf->m_head != NULL)
2138 bus_dmamap_unload(rxr->rx_tag, rxbuf->map);
2139
2140 map = rxbuf->map;
2141 rxbuf->map = rxr->rx_sparemap;
2142 rxr->rx_sparemap = map;
2143
2144 rxbuf->m_head = m;
2145 rxbuf->paddr = seg.ds_addr;
2146
2147 igb_setup_rxdesc(&rxr->rx_base[i], rxbuf);
2148 return 0;
2149}
2150
2151static int
2152igb_init_rx_ring(struct igb_rx_ring *rxr)
2153{
2154 int i;
2155
2156 /* Clear the ring contents */
2157 bzero(rxr->rx_base,
91b8700a 2158 rxr->num_rx_desc * sizeof(union e1000_adv_rx_desc));
1f7e3916
SZ		 2159
2160 /* Now replenish the ring mbufs */
91b8700a 2161 for (i = 0; i < rxr->num_rx_desc; ++i) {
1f7e3916
SZ		 2162 int error;
2163
2164 error = igb_newbuf(rxr, i, TRUE);
2165 if (error)
2166 return error;
2167 }
2168
2169 /* Setup our descriptor indices */
2170 rxr->next_to_check = 0;
2171
2172 rxr->fmp = NULL;
2173 rxr->lmp = NULL;
2174 rxr->discard = FALSE;
2175
2176 return 0;
2177}
2178
2179static void
2180igb_init_rx_unit(struct igb_softc *sc)
2181{
2182 struct ifnet *ifp = &sc->arpcom.ac_if;
2183 struct e1000_hw *hw = &sc->hw;
2184 uint32_t rctl, rxcsum, srrctl = 0;
2185 int i;
2186
2187 /*
2188 * Make sure receives are disabled while setting
2189 * up the descriptor ring
2190 */
2191 rctl = E1000_READ_REG(hw, E1000_RCTL);
2192 E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
2193
2194#if 0
2195 /*
2196 ** Set up for header split
2197 */
2198 if (igb_header_split) {
2199 /* Use a standard mbuf for the header */
2200 srrctl |= IGB_HDR_BUF << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
2201 srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
2202 } else
2203#endif
2204 srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
2205
2206 /*
2207 ** Set up for jumbo frames
2208 */
2209 if (ifp->if_mtu > ETHERMTU) {
2210 rctl |= E1000_RCTL_LPE;
2211#if 0
2212 if (adapter->rx_mbuf_sz == MJUMPAGESIZE) {
2213 srrctl |= 4096 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2214 rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX;
2215 } else if (adapter->rx_mbuf_sz > MJUMPAGESIZE) {
2216 srrctl |= 8192 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2217 rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX;
2218 }
2219 /* Set maximum packet len */
2220 psize = adapter->max_frame_size;
2221 /* are we on a vlan? */
2222 if (adapter->ifp->if_vlantrunk != NULL)
2223 psize += VLAN_TAG_SIZE;
2224 E1000_WRITE_REG(&adapter->hw, E1000_RLPML, psize);
2225#else
2226 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2227 rctl |= E1000_RCTL_SZ_2048;
2228#endif
2229 } else {
2230 rctl &= ~E1000_RCTL_LPE;
2231 srrctl |= 2048 >> E1000_SRRCTL_BSIZEPKT_SHIFT;
2232 rctl |= E1000_RCTL_SZ_2048;
2233 }
2234
2235 /* Setup the Base and Length of the Rx Descriptor Rings */
be922da6 2236 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 2237 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2238 uint64_t bus_addr = rxr->rxdma.dma_paddr;
2239 uint32_t rxdctl;
2240
2241 E1000_WRITE_REG(hw, E1000_RDLEN(i),
91b8700a 2242 rxr->num_rx_desc * sizeof(struct e1000_rx_desc));
1f7e3916
SZ		 2243 E1000_WRITE_REG(hw, E1000_RDBAH(i),
2244 (uint32_t)(bus_addr >> 32));
2245 E1000_WRITE_REG(hw, E1000_RDBAL(i),
2246 (uint32_t)bus_addr);
2247 E1000_WRITE_REG(hw, E1000_SRRCTL(i), srrctl);
2248 /* Enable this Queue */
2249 rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(i));
2250 rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
2251 rxdctl &= 0xFFF00000;
2252 rxdctl |= IGB_RX_PTHRESH;
2253 rxdctl |= IGB_RX_HTHRESH << 8;
54691ff1
SZ		 2254 /*
2255 * Don't set WTHRESH to a value above 1 on 82576, see:
2256 * 82576 specification update errata #26
2257 */
1f7e3916
SZ		 2258 rxdctl |= IGB_RX_WTHRESH << 16;
2259 E1000_WRITE_REG(hw, E1000_RXDCTL(i), rxdctl);
2260 }
2261
8d6600da
SZ		 2262 rxcsum = E1000_READ_REG(&sc->hw, E1000_RXCSUM);
2263 rxcsum &= ~(E1000_RXCSUM_PCSS_MASK | E1000_RXCSUM_IPPCSE);
2264
1f7e3916 2265 /*
8d6600da
SZ		 2266 * Receive Checksum Offload for TCP and UDP
2267 *
2268 * Checksum offloading is also enabled if multiple receive
2269 * queue is to be supported, since we need it to figure out
2270 * fragments.
1f7e3916 2271 */
8d6600da
SZ		 2272 if ((ifp->if_capenable & IFCAP_RXCSUM) || IGB_ENABLE_HWRSS(sc)) {
2273 /*
2274 * NOTE:
2275 * PCSD must be enabled to enable multiple
2276 * receive queues.
2277 */
2278 rxcsum |= E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2279 E1000_RXCSUM_PCSD;
2280 } else {
2281 rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL |
2282 E1000_RXCSUM_PCSD);
2283 }
2284 E1000_WRITE_REG(&sc->hw, E1000_RXCSUM, rxcsum);
2285
2286 if (IGB_ENABLE_HWRSS(sc)) {
2287 uint8_t key[IGB_NRSSRK * IGB_RSSRK_SIZE];
d1218435
SZ		 2288 uint32_t reta_shift;
2289 int j, r;
8d6600da
SZ		 2290
2291 /*
2292 * NOTE:
2293 * When we reach here, RSS has already been disabled
2294 * in igb_stop(), so we could safely configure RSS key
2295 * and redirect table.
2296 */
2297
2298 /*
2299 * Configure RSS key
2300 */
2301 toeplitz_get_key(key, sizeof(key));
2302 for (i = 0; i < IGB_NRSSRK; ++i) {
2303 uint32_t rssrk;
2304
2305 rssrk = IGB_RSSRK_VAL(key, i);
2306 IGB_RSS_DPRINTF(sc, 1, "rssrk%d 0x%08x\n", i, rssrk);
2307
2308 E1000_WRITE_REG(hw, E1000_RSSRK(i), rssrk);
1f7e3916 2309 }
1f7e3916
SZ		 2310
2311 /*
8d6600da
SZ		 2312 * Configure RSS redirect table in following fashion:
2313 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
2314 */
2315 reta_shift = IGB_RETA_SHIFT;
2316 if (hw->mac.type == e1000_82575)
2317 reta_shift = IGB_RETA_SHIFT_82575;
8d6600da 2318
d1218435
SZ		 2319 r = 0;
2320 for (j = 0; j < IGB_NRETA; ++j) {
2321 uint32_t reta = 0;
8d6600da 2322
d1218435
SZ		 2323 for (i = 0; i < IGB_RETA_SIZE; ++i) {
2324 uint32_t q;
2325
be922da6 2326 q = (r % sc->rx_ring_inuse) << reta_shift;
d1218435
SZ		 2327 reta |= q << (8 * i);
2328 ++r;
2329 }
2330 IGB_RSS_DPRINTF(sc, 1, "reta 0x%08x\n", reta);
2331 E1000_WRITE_REG(hw, E1000_RETA(j), reta);
2332 }
8d6600da
SZ		 2333
2334 /*
2335 * Enable multiple receive queues.
2336 * Enable IPv4 RSS standard hash functions.
2337 * Disable RSS interrupt on 82575
2338 */
2339 E1000_WRITE_REG(&sc->hw, E1000_MRQC,
2340 E1000_MRQC_ENABLE_RSS_4Q |
2341 E1000_MRQC_RSS_FIELD_IPV4_TCP |
2342 E1000_MRQC_RSS_FIELD_IPV4);
1f7e3916 2343 }
1f7e3916
SZ		 2344
2345 /* Setup the Receive Control Register */
2346 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
2347 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO |
2348 E1000_RCTL_RDMTS_HALF |
2349 (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
2350 /* Strip CRC bytes. */
2351 rctl |= E1000_RCTL_SECRC;
2352 /* Make sure VLAN Filters are off */
2353 rctl &= ~E1000_RCTL_VFE;
2354 /* Don't store bad packets */
2355 rctl &= ~E1000_RCTL_SBP;
2356
2357 /* Enable Receives */
2358 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
2359
2360 /*
2361 * Setup the HW Rx Head and Tail Descriptor Pointers
2362 * - needs to be after enable
2363 */
be922da6 2364 for (i = 0; i < sc->rx_ring_inuse; ++i) {
1f7e3916
SZ		 2365 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2366
2367 E1000_WRITE_REG(hw, E1000_RDH(i), rxr->next_to_check);
91b8700a 2368 E1000_WRITE_REG(hw, E1000_RDT(i), rxr->num_rx_desc - 1);
1f7e3916
SZ		 2369 }
2370}
2371
2372static void
2373igb_rxeof(struct igb_rx_ring *rxr, int count)
2374{
2375 struct ifnet *ifp = &rxr->sc->arpcom.ac_if;
2376 union e1000_adv_rx_desc *cur;
2377 uint32_t staterr;
2378 int i;
2379
2380 i = rxr->next_to_check;
2381 cur = &rxr->rx_base[i];
2382 staterr = le32toh(cur->wb.upper.status_error);
2383
2384 if ((staterr & E1000_RXD_STAT_DD) == 0)
2385 return;
2386
2387 while ((staterr & E1000_RXD_STAT_DD) && count != 0) {
8d6600da 2388 struct pktinfo *pi = NULL, pi0;
1f7e3916
SZ		 2389 struct igb_rx_buf *rxbuf = &rxr->rx_buf[i];
2390 struct mbuf *m = NULL;
2391 boolean_t eop;
2392
2393 eop = (staterr & E1000_RXD_STAT_EOP) ? TRUE : FALSE;
2394 if (eop)
2395 --count;
2396
2397 if ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) == 0 &&
2398 !rxr->discard) {
2399 struct mbuf *mp = rxbuf->m_head;
8d6600da 2400 uint32_t hash, hashtype;
1f7e3916
SZ		 2401 uint16_t vlan;
2402 int len;
2403
2404 len = le16toh(cur->wb.upper.length);
2405 if (rxr->sc->hw.mac.type == e1000_i350 &&
2406 (staterr & E1000_RXDEXT_STATERR_LB))
2407 vlan = be16toh(cur->wb.upper.vlan);
2408 else
2409 vlan = le16toh(cur->wb.upper.vlan);
2410
8d6600da
SZ		 2411 hash = le32toh(cur->wb.lower.hi_dword.rss);
2412 hashtype = le32toh(cur->wb.lower.lo_dword.data) &
2413 E1000_RXDADV_RSSTYPE_MASK;
2414
2415 IGB_RSS_DPRINTF(rxr->sc, 10,
2416 "ring%d, hash 0x%08x, hashtype %u\n",
2417 rxr->me, hash, hashtype);
2418
1f7e3916
SZ		 2419 bus_dmamap_sync(rxr->rx_tag, rxbuf->map,
2420 BUS_DMASYNC_POSTREAD);
2421
2422 if (igb_newbuf(rxr, i, FALSE) != 0) {
2423 ifp->if_iqdrops++;
2424 goto discard;
2425 }
2426
2427 mp->m_len = len;
2428 if (rxr->fmp == NULL) {
2429 mp->m_pkthdr.len = len;
2430 rxr->fmp = mp;
2431 rxr->lmp = mp;
2432 } else {
2433 rxr->lmp->m_next = mp;
2434 rxr->lmp = rxr->lmp->m_next;
2435 rxr->fmp->m_pkthdr.len += len;
2436 }
2437
2438 if (eop) {
2439 m = rxr->fmp;
2440 rxr->fmp = NULL;
2441 rxr->lmp = NULL;
2442
2443 m->m_pkthdr.rcvif = ifp;
2444 ifp->if_ipackets++;
2445
2446 if (ifp->if_capenable & IFCAP_RXCSUM)
2447 igb_rxcsum(staterr, m);
2448
2449 if (staterr & E1000_RXD_STAT_VP) {
2450 m->m_pkthdr.ether_vlantag = vlan;
2451 m->m_flags |= M_VLANTAG;
2452 }
2453
1f7e3916 2454 if (ifp->if_capenable & IFCAP_RSS) {
8d6600da
SZ		 2455 pi = igb_rssinfo(m, &pi0,
2456 hash, hashtype, staterr);
1f7e3916 2457 }
8d6600da
SZ		 2458#ifdef IGB_RSS_DEBUG
2459 rxr->rx_packets++;
1f7e3916
SZ		 2460#endif
2461 }
2462 } else {
2463 ifp->if_ierrors++;
2464discard:
2465 igb_setup_rxdesc(cur, rxbuf);
2466 if (!eop)
2467 rxr->discard = TRUE;
2468 else
2469 rxr->discard = FALSE;
2470 if (rxr->fmp != NULL) {
2471 m_freem(rxr->fmp);
2472 rxr->fmp = NULL;
2473 rxr->lmp = NULL;
2474 }
2475 m = NULL;
2476 }
2477
2478 if (m != NULL)
8d6600da 2479 ether_input_pkt(ifp, m, pi);
1f7e3916
SZ		 2480
2481 /* Advance our pointers to the next descriptor. */
91b8700a 2482 if (++i == rxr->num_rx_desc)
1f7e3916
SZ		 2483 i = 0;
2484
2485 cur = &rxr->rx_base[i];
2486 staterr = le32toh(cur->wb.upper.status_error);
2487 }
2488 rxr->next_to_check = i;
2489
2490 if (--i < 0)
91b8700a 2491 i = rxr->num_rx_desc - 1;
1f7e3916
SZ		 2492 E1000_WRITE_REG(&rxr->sc->hw, E1000_RDT(rxr->me), i);
2493}
2494
2495
2496static void
2497igb_set_vlan(struct igb_softc *sc)
2498{
2499 struct e1000_hw *hw = &sc->hw;
2500 uint32_t reg;
2501#if 0
2502 struct ifnet *ifp = sc->arpcom.ac_if;
2503#endif
2504
2505 if (sc->vf_ifp) {
2506 e1000_rlpml_set_vf(hw, sc->max_frame_size + VLAN_TAG_SIZE);
2507 return;
2508 }
2509
2510 reg = E1000_READ_REG(hw, E1000_CTRL);
2511 reg |= E1000_CTRL_VME;
2512 E1000_WRITE_REG(hw, E1000_CTRL, reg);
2513
2514#if 0
2515 /* Enable the Filter Table */
2516 if (ifp->if_capenable & IFCAP_VLAN_HWFILTER) {
2517 reg = E1000_READ_REG(hw, E1000_RCTL);
2518 reg &= ~E1000_RCTL_CFIEN;
2519 reg |= E1000_RCTL_VFE;
2520 E1000_WRITE_REG(hw, E1000_RCTL, reg);
2521 }
2522#endif
2523
2524 /* Update the frame size */
2525 E1000_WRITE_REG(&sc->hw, E1000_RLPML,
2526 sc->max_frame_size + VLAN_TAG_SIZE);
2527
2528#if 0
2529 /* Don't bother with table if no vlans */
2530 if ((adapter->num_vlans == 0) ||
2531 ((ifp->if_capenable & IFCAP_VLAN_HWFILTER) == 0))
2532 return;
2533 /*
2534 ** A soft reset zero's out the VFTA, so
2535 ** we need to repopulate it now.
2536 */
2537 for (int i = 0; i < IGB_VFTA_SIZE; i++)
2538 if (adapter->shadow_vfta[i] != 0) {
2539 if (adapter->vf_ifp)
2540 e1000_vfta_set_vf(hw,
2541 adapter->shadow_vfta[i], TRUE);
2542 else
2543 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA,
2544 i, adapter->shadow_vfta[i]);
2545 }
2546#endif
2547}
2548
2549static void
2550igb_enable_intr(struct igb_softc *sc)
2551{
9c0ecdcc
SZ		 2552 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2553 lwkt_serialize_handler_enable(&sc->main_serialize);
2554 } else {
2555 int i;
2556
2557 for (i = 0; i < sc->msix_cnt; ++i) {
2558 lwkt_serialize_handler_enable(
2559 sc->msix_data[i].msix_serialize);
2560 }
2561 }
1f7e3916 2562
f6167a56 2563 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
9c0ecdcc
SZ		 2564 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
2565 E1000_WRITE_REG(&sc->hw, E1000_EIAC, sc->intr_mask);
2566 else
2567 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
f6167a56
SZ		 2568 E1000_WRITE_REG(&sc->hw, E1000_EIAM, sc->intr_mask);
2569 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
1f7e3916
SZ		 2570 E1000_WRITE_REG(&sc->hw, E1000_IMS, E1000_IMS_LSC);
2571 } else {
2572 E1000_WRITE_REG(&sc->hw, E1000_IMS, IMS_ENABLE_MASK);
2573 }
2574 E1000_WRITE_FLUSH(&sc->hw);
2575}
2576
2577static void
2578igb_disable_intr(struct igb_softc *sc)
2579{
f6167a56 2580 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0) {
1f7e3916
SZ		 2581 E1000_WRITE_REG(&sc->hw, E1000_EIMC, 0xffffffff);
2582 E1000_WRITE_REG(&sc->hw, E1000_EIAC, 0);
f6167a56 2583 }
1f7e3916
SZ		 2584 E1000_WRITE_REG(&sc->hw, E1000_IMC, 0xffffffff);
2585 E1000_WRITE_FLUSH(&sc->hw);
2586
9c0ecdcc
SZ		 2587 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
2588 lwkt_serialize_handler_disable(&sc->main_serialize);
2589 } else {
2590 int i;
2591
2592 for (i = 0; i < sc->msix_cnt; ++i) {
2593 lwkt_serialize_handler_disable(
2594 sc->msix_data[i].msix_serialize);
2595 }
2596 }
1f7e3916
SZ		 2597}
2598
2599/*
2600 * Bit of a misnomer, what this really means is
2601 * to enable OS management of the system... aka
2602 * to disable special hardware management features
2603 */
2604static void
2605igb_get_mgmt(struct igb_softc *sc)
2606{
396b7048 2607 if (sc->flags & IGB_FLAG_HAS_MGMT) {
1f7e3916
SZ		 2608 int manc2h = E1000_READ_REG(&sc->hw, E1000_MANC2H);
2609 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2610
2611 /* disable hardware interception of ARP */
2612 manc &= ~E1000_MANC_ARP_EN;
2613
2614 /* enable receiving management packets to the host */
2615 manc |= E1000_MANC_EN_MNG2HOST;
2616 manc2h |= 1 << 5; /* Mng Port 623 */
2617 manc2h |= 1 << 6; /* Mng Port 664 */
2618 E1000_WRITE_REG(&sc->hw, E1000_MANC2H, manc2h);
2619 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2620 }
2621}
2622
2623/*
2624 * Give control back to hardware management controller
2625 * if there is one.
2626 */
2627static void
2628igb_rel_mgmt(struct igb_softc *sc)
2629{
396b7048 2630 if (sc->flags & IGB_FLAG_HAS_MGMT) {
1f7e3916
SZ		 2631 int manc = E1000_READ_REG(&sc->hw, E1000_MANC);
2632
2633 /* Re-enable hardware interception of ARP */
2634 manc |= E1000_MANC_ARP_EN;
2635 manc &= ~E1000_MANC_EN_MNG2HOST;
2636
2637 E1000_WRITE_REG(&sc->hw, E1000_MANC, manc);
2638 }
2639}
2640
2641/*
2642 * Sets CTRL_EXT:DRV_LOAD bit.
2643 *
2644 * For ASF and Pass Through versions of f/w this means that
2645 * the driver is loaded.
2646 */
2647static void
2648igb_get_hw_control(struct igb_softc *sc)
2649{
2650 uint32_t ctrl_ext;
2651
2652 if (sc->vf_ifp)
2653 return;
2654
2655 /* Let firmware know the driver has taken over */
2656 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2657 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2658 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
2659}
2660
2661/*
2662 * Resets CTRL_EXT:DRV_LOAD bit.
2663 *
2664 * For ASF and Pass Through versions of f/w this means that the
2665 * driver is no longer loaded.
2666 */
2667static void
2668igb_rel_hw_control(struct igb_softc *sc)
2669{
2670 uint32_t ctrl_ext;
2671
2672 if (sc->vf_ifp)
2673 return;
2674
2675 /* Let firmware taken over control of h/w */
2676 ctrl_ext = E1000_READ_REG(&sc->hw, E1000_CTRL_EXT);
2677 E1000_WRITE_REG(&sc->hw, E1000_CTRL_EXT,
2678 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
2679}
2680
2681static int
2682igb_is_valid_ether_addr(const uint8_t *addr)
2683{
2684 uint8_t zero_addr[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 };
2685
2686 if ((addr[0] & 1) || !bcmp(addr, zero_addr, ETHER_ADDR_LEN))
2687 return FALSE;
2688 return TRUE;
2689}
2690
2691/*
2692 * Enable PCI Wake On Lan capability
2693 */
2694static void
2695igb_enable_wol(device_t dev)
2696{
2697 uint16_t cap, status;
2698 uint8_t id;
2699
2700 /* First find the capabilities pointer*/
2701 cap = pci_read_config(dev, PCIR_CAP_PTR, 2);
2702
2703 /* Read the PM Capabilities */
2704 id = pci_read_config(dev, cap, 1);
2705 if (id != PCIY_PMG) /* Something wrong */
2706 return;
2707
2708 /*
2709 * OK, we have the power capabilities,
2710 * so now get the status register
2711 */
2712 cap += PCIR_POWER_STATUS;
2713 status = pci_read_config(dev, cap, 2);
2714 status |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2715 pci_write_config(dev, cap, status, 2);
2716}
2717
2718static void
2719igb_update_stats_counters(struct igb_softc *sc)
2720{
2721 struct e1000_hw *hw = &sc->hw;
2722 struct e1000_hw_stats *stats;
2723 struct ifnet *ifp = &sc->arpcom.ac_if;
2724
2725 /*
2726 * The virtual function adapter has only a
2727 * small controlled set of stats, do only
2728 * those and return.
2729 */
2730 if (sc->vf_ifp) {
2731 igb_update_vf_stats_counters(sc);
2732 return;
2733 }
2734 stats = sc->stats;
2735
2736 if (sc->hw.phy.media_type == e1000_media_type_copper ||
2737 (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
2738 stats->symerrs +=
2739 E1000_READ_REG(hw,E1000_SYMERRS);
2740 stats->sec += E1000_READ_REG(hw, E1000_SEC);
2741 }
2742
2743 stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
2744 stats->mpc += E1000_READ_REG(hw, E1000_MPC);
2745 stats->scc += E1000_READ_REG(hw, E1000_SCC);
2746 stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
2747
2748 stats->mcc += E1000_READ_REG(hw, E1000_MCC);
2749 stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
2750 stats->colc += E1000_READ_REG(hw, E1000_COLC);
2751 stats->dc += E1000_READ_REG(hw, E1000_DC);
2752 stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
2753 stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
2754 stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
2755
2756 /*
2757 * For watchdog management we need to know if we have been
2758 * paused during the last interval, so capture that here.
2759 */
2760 sc->pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
2761 stats->xoffrxc += sc->pause_frames;
2762 stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
2763 stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
2764 stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
2765 stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
2766 stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
2767 stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
2768 stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
2769 stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
2770 stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
2771 stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
2772 stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
2773 stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
2774
2775 /* For the 64-bit byte counters the low dword must be read first. */
2776 /* Both registers clear on the read of the high dword */
2777
2778 stats->gorc += E1000_READ_REG(hw, E1000_GORCL) +
2779 ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
2780 stats->gotc += E1000_READ_REG(hw, E1000_GOTCL) +
2781 ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
2782
2783 stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
2784 stats->ruc += E1000_READ_REG(hw, E1000_RUC);
2785 stats->rfc += E1000_READ_REG(hw, E1000_RFC);
2786 stats->roc += E1000_READ_REG(hw, E1000_ROC);
2787 stats->rjc += E1000_READ_REG(hw, E1000_RJC);
2788
2789 stats->tor += E1000_READ_REG(hw, E1000_TORH);
2790 stats->tot += E1000_READ_REG(hw, E1000_TOTH);
2791
2792 stats->tpr += E1000_READ_REG(hw, E1000_TPR);
2793 stats->tpt += E1000_READ_REG(hw, E1000_TPT);
2794 stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
2795 stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
2796 stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
2797 stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
2798 stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
2799 stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
2800 stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
2801 stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
2802
2803 /* Interrupt Counts */
2804
2805 stats->iac += E1000_READ_REG(hw, E1000_IAC);
2806 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
2807 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
2808 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
2809 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
2810 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
2811 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
2812 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
2813 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
2814
2815 /* Host to Card Statistics */
2816
2817 stats->cbtmpc += E1000_READ_REG(hw, E1000_CBTMPC);
2818 stats->htdpmc += E1000_READ_REG(hw, E1000_HTDPMC);
2819 stats->cbrdpc += E1000_READ_REG(hw, E1000_CBRDPC);
2820 stats->cbrmpc += E1000_READ_REG(hw, E1000_CBRMPC);
2821 stats->rpthc += E1000_READ_REG(hw, E1000_RPTHC);
2822 stats->hgptc += E1000_READ_REG(hw, E1000_HGPTC);
2823 stats->htcbdpc += E1000_READ_REG(hw, E1000_HTCBDPC);
2824 stats->hgorc += (E1000_READ_REG(hw, E1000_HGORCL) +
2825 ((uint64_t)E1000_READ_REG(hw, E1000_HGORCH) << 32));
2826 stats->hgotc += (E1000_READ_REG(hw, E1000_HGOTCL) +
2827 ((uint64_t)E1000_READ_REG(hw, E1000_HGOTCH) << 32));
2828 stats->lenerrs += E1000_READ_REG(hw, E1000_LENERRS);
2829 stats->scvpc += E1000_READ_REG(hw, E1000_SCVPC);
2830 stats->hrmpc += E1000_READ_REG(hw, E1000_HRMPC);
2831
2832 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
2833 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
2834 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
2835 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
2836 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
2837 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
2838
2839 ifp->if_collisions = stats->colc;
2840
2841 /* Rx Errors */
2842 ifp->if_ierrors = stats->rxerrc + stats->crcerrs + stats->algnerrc +
2843 stats->ruc + stats->roc + stats->mpc + stats->cexterr;
2844
2845 /* Tx Errors */
2846 ifp->if_oerrors = stats->ecol + stats->latecol + sc->watchdog_events;
2847
2848 /* Driver specific counters */
2849 sc->device_control = E1000_READ_REG(hw, E1000_CTRL);
2850 sc->rx_control = E1000_READ_REG(hw, E1000_RCTL);
2851 sc->int_mask = E1000_READ_REG(hw, E1000_IMS);
2852 sc->eint_mask = E1000_READ_REG(hw, E1000_EIMS);
2853 sc->packet_buf_alloc_tx =
2854 ((E1000_READ_REG(hw, E1000_PBA) & 0xffff0000) >> 16);
2855 sc->packet_buf_alloc_rx =
2856 (E1000_READ_REG(hw, E1000_PBA) & 0xffff);
2857}
2858
2859static void
2860igb_vf_init_stats(struct igb_softc *sc)
2861{
2862 struct e1000_hw *hw = &sc->hw;
2863 struct e1000_vf_stats *stats;
2864
2865 stats = sc->stats;
2866 stats->last_gprc = E1000_READ_REG(hw, E1000_VFGPRC);
2867 stats->last_gorc = E1000_READ_REG(hw, E1000_VFGORC);
2868 stats->last_gptc = E1000_READ_REG(hw, E1000_VFGPTC);
2869 stats->last_gotc = E1000_READ_REG(hw, E1000_VFGOTC);
2870 stats->last_mprc = E1000_READ_REG(hw, E1000_VFMPRC);
2871}
2872
2873static void
2874igb_update_vf_stats_counters(struct igb_softc *sc)
2875{
2876 struct e1000_hw *hw = &sc->hw;
2877 struct e1000_vf_stats *stats;
2878
2879 if (sc->link_speed == 0)
2880 return;
2881
2882 stats = sc->stats;
2883 UPDATE_VF_REG(E1000_VFGPRC, stats->last_gprc, stats->gprc);
2884 UPDATE_VF_REG(E1000_VFGORC, stats->last_gorc, stats->gorc);
2885 UPDATE_VF_REG(E1000_VFGPTC, stats->last_gptc, stats->gptc);
2886 UPDATE_VF_REG(E1000_VFGOTC, stats->last_gotc, stats->gotc);
2887 UPDATE_VF_REG(E1000_VFMPRC, stats->last_mprc, stats->mprc);
2888}
2889
2890#ifdef DEVICE_POLLING
2891
2892static void
2893igb_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2894{
2895 struct igb_softc *sc = ifp->if_softc;
2896 uint32_t reg_icr;
2897
1f7e3916
SZ		 2898 switch (cmd) {
2899 case POLL_REGISTER:
1f7e3916 2900 case POLL_DEREGISTER:
9c0ecdcc
SZ		 2901 ASSERT_IFNET_SERIALIZED_ALL(ifp);
2902 igb_init(sc);
1f7e3916
SZ		 2903 break;
2904
2905 case POLL_AND_CHECK_STATUS:
9c0ecdcc 2906 ASSERT_SERIALIZED(&sc->main_serialize);
1f7e3916
SZ		 2907 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2908 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
2909 sc->hw.mac.get_link_status = 1;
2910 igb_update_link_status(sc);
2911 }
2912 /* FALL THROUGH */
2913 case POLL_ONLY:
9c0ecdcc 2914 ASSERT_SERIALIZED(&sc->main_serialize);
1f7e3916 2915 if (ifp->if_flags & IFF_RUNNING) {
7d235eb5
SZ		 2916 struct igb_tx_ring *txr;
2917 int i;
2918
be922da6 2919 for (i = 0; i < sc->rx_ring_inuse; ++i) {
7d235eb5
SZ		 2920 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2921
2922 lwkt_serialize_enter(&rxr->rx_serialize);
2923 igb_rxeof(rxr, count);
2924 lwkt_serialize_exit(&rxr->rx_serialize);
2925 }
1f7e3916 2926
7d235eb5
SZ		 2927 txr = &sc->tx_rings[0];
2928 lwkt_serialize_enter(&txr->tx_serialize);
2929 igb_txeof(txr);
1f7e3916
SZ		 2930 if (!ifq_is_empty(&ifp->if_snd))
2931 if_devstart(ifp);
7d235eb5 2932 lwkt_serialize_exit(&txr->tx_serialize);
1f7e3916
SZ		 2933 }
2934 break;
2935 }
2936}
2937
2938#endif /* DEVICE_POLLING */
2939
2940static void
2941igb_intr(void *xsc)
f6167a56
SZ		 2942{
2943 struct igb_softc *sc = xsc;
2944 struct ifnet *ifp = &sc->arpcom.ac_if;
2945 uint32_t eicr;
2946
7d235eb5 2947 ASSERT_SERIALIZED(&sc->main_serialize);
f6167a56
SZ		 2948
2949 eicr = E1000_READ_REG(&sc->hw, E1000_EICR);
2950
2951 if (eicr == 0)
2952 return;
2953
2954 if (ifp->if_flags & IFF_RUNNING) {
7d235eb5
SZ		 2955 struct igb_tx_ring *txr;
2956 int i;
f6167a56 2957
be922da6 2958 for (i = 0; i < sc->rx_ring_inuse; ++i) {
7d235eb5
SZ		 2959 struct igb_rx_ring *rxr = &sc->rx_rings[i];
2960
2961 if (eicr & rxr->rx_intr_mask) {
2962 lwkt_serialize_enter(&rxr->rx_serialize);
2963 igb_rxeof(rxr, -1);
2964 lwkt_serialize_exit(&rxr->rx_serialize);
2965 }
2966 }
2967
2968 txr = &sc->tx_rings[0];
2969 if (eicr & txr->tx_intr_mask) {
2970 lwkt_serialize_enter(&txr->tx_serialize);
2971 igb_txeof(txr);
f6167a56
SZ		 2972 if (!ifq_is_empty(&ifp->if_snd))
2973 if_devstart(ifp);
7d235eb5 2974 lwkt_serialize_exit(&txr->tx_serialize);
f6167a56
SZ		 2975 }
2976 }
2977
2978 if (eicr & E1000_EICR_OTHER) {
2979 uint32_t icr = E1000_READ_REG(&sc->hw, E1000_ICR);
2980
2981 /* Link status change */
2982 if (icr & E1000_ICR_LSC) {
2983 sc->hw.mac.get_link_status = 1;
2984 igb_update_link_status(sc);
2985 }
2986 }
2987
2988 /*
2989 * Reading EICR has the side effect to clear interrupt mask,
2990 * so all interrupts need to be enabled here.
2991 */
2992 E1000_WRITE_REG(&sc->hw, E1000_EIMS, sc->intr_mask);
2993}
2994
2995static void
9c0ecdcc 2996igb_intr_shared(void *xsc)
1f7e3916
SZ		 2997{
2998 struct igb_softc *sc = xsc;
2999 struct ifnet *ifp = &sc->arpcom.ac_if;
3000 uint32_t reg_icr;
3001
7d235eb5 3002 ASSERT_SERIALIZED(&sc->main_serialize);
1f7e3916
SZ		 3003
3004 reg_icr = E1000_READ_REG(&sc->hw, E1000_ICR);
3005
3006 /* Hot eject? */
3007 if (reg_icr == 0xffffffff)
3008 return;
3009
3010 /* Definitely not our interrupt. */
3011 if (reg_icr == 0x0)
3012 return;
3013
3014 if ((reg_icr & E1000_ICR_INT_ASSERTED) == 0)
3015 return;
3016
3017 if (ifp->if_flags & IFF_RUNNING) {
71b8b086
SZ		 3018 if (reg_icr &
3019 (E1000_ICR_RXT0 | E1000_ICR_RXDMT0 | E1000_ICR_RXO)) {
3020 int i;
7d235eb5 3021
71b8b086
SZ		 3022 for (i = 0; i < sc->rx_ring_inuse; ++i) {
3023 struct igb_rx_ring *rxr = &sc->rx_rings[i];
1f7e3916 3024
71b8b086
SZ		 3025 lwkt_serialize_enter(&rxr->rx_serialize);
3026 igb_rxeof(rxr, -1);
3027 lwkt_serialize_exit(&rxr->rx_serialize);
3028 }
7d235eb5
SZ		 3029 }
3030
71b8b086
SZ		 3031 if (reg_icr & E1000_ICR_TXDW) {
3032 struct igb_tx_ring *txr = &sc->tx_rings[0];
3033
3034 lwkt_serialize_enter(&txr->tx_serialize);
3035 igb_txeof(txr);
3036 if (!ifq_is_empty(&ifp->if_snd))
3037 if_devstart(ifp);
3038 lwkt_serialize_exit(&txr->tx_serialize);
3039 }
1f7e3916
SZ		 3040 }
3041
3042 /* Link status change */
3043 if (reg_icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3044 sc->hw.mac.get_link_status = 1;
3045 igb_update_link_status(sc);
3046 }
3047
3048 if (reg_icr & E1000_ICR_RXO)
3049 sc->rx_overruns++;
3050}
3051
1f7e3916
SZ		 3052static int
3053igb_encap(struct igb_tx_ring *txr, struct mbuf **m_headp)
3054{
3055 bus_dma_segment_t segs[IGB_MAX_SCATTER];
3056 bus_dmamap_t map;
3057 struct igb_tx_buf *tx_buf, *tx_buf_mapped;
3058 union e1000_adv_tx_desc *txd = NULL;
3059 struct mbuf *m_head = *m_headp;
b6220144
SZ		 3060 uint32_t olinfo_status = 0, cmd_type_len = 0, cmd_rs = 0;
3061 int maxsegs, nsegs, i, j, error, last = 0;
1f7e3916
SZ		 3062 uint32_t hdrlen = 0;
3063
23f6ffe4
SZ		 3064 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3065 error = igb_tso_pullup(txr, m_headp);
3066 if (error)
3067 return error;
3068 m_head = *m_headp;
3069 }
3070
1f7e3916
SZ		 3071 /* Set basic descriptor constants */
3072 cmd_type_len |= E1000_ADVTXD_DTYP_DATA;
3073 cmd_type_len |= E1000_ADVTXD_DCMD_IFCS | E1000_ADVTXD_DCMD_DEXT;
3074 if (m_head->m_flags & M_VLANTAG)
3075 cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
3076
3077 /*
3078 * Map the packet for DMA.
1f7e3916 3079 */
b6220144 3080 tx_buf = &txr->tx_buf[txr->next_avail_desc];
1f7e3916
SZ		 3081 tx_buf_mapped = tx_buf;
3082 map = tx_buf->map;
3083
b6220144
SZ		 3084 maxsegs = txr->tx_avail - IGB_TX_RESERVED;
3085 KASSERT(maxsegs >= txr->spare_desc, ("not enough spare TX desc\n"));
1f7e3916
SZ		 3086 if (maxsegs > IGB_MAX_SCATTER)
3087 maxsegs = IGB_MAX_SCATTER;
3088
3089 error = bus_dmamap_load_mbuf_defrag(txr->tx_tag, map, m_headp,
3090 segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
3091 if (error) {
3092 if (error == ENOBUFS)
3093 txr->sc->mbuf_defrag_failed++;
3094 else
3095 txr->sc->no_tx_dma_setup++;
3096
3097 m_freem(*m_headp);
3098 *m_headp = NULL;
3099 return error;
3100 }
3101 bus_dmamap_sync(txr->tx_tag, map, BUS_DMASYNC_PREWRITE);
3102
3103 m_head = *m_headp;
3104
3105#if 0
3106 /*
3107 * Set up the context descriptor:
3108 * used when any hardware offload is done.
3109 * This includes CSUM, VLAN, and TSO. It
3110 * will use the first descriptor.
3111 */
3112 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3113 if (igb_tso_setup(txr, m_head, &hdrlen)) {
3114 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3115 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3116 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3117 } else
3118 return (ENXIO);
3119 } else if (igb_tx_ctx_setup(txr, m_head))
3120 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3121#else
23f6ffe4
SZ		 3122 if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
3123 igb_tso_ctx(txr, m_head, &hdrlen);
3124 cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
3125 olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
3126 olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
3127 txr->tx_nsegs++;
3128 } else if (igb_txcsum_ctx(txr, m_head)) {
48faa653
SZ		 3129 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
3130 olinfo_status |= (E1000_TXD_POPTS_IXSM << 8);
1f7e3916
SZ		 3131 if (m_head->m_pkthdr.csum_flags & (CSUM_UDP | CSUM_TCP))
3132 olinfo_status |= (E1000_TXD_POPTS_TXSM << 8);
b6220144 3133 txr->tx_nsegs++;
1f7e3916
SZ		 3134 }
3135#endif
3136
b6220144
SZ		 3137 txr->tx_nsegs += nsegs;
3138 if (txr->tx_nsegs >= txr->intr_nsegs) {
3139 /*
3140 * Report Status (RS) is turned on every intr_nsegs
3141 * descriptors (roughly).
3142 */
3143 txr->tx_nsegs = 0;
3144 cmd_rs = E1000_ADVTXD_DCMD_RS;
3145 }
3146
1f7e3916
SZ		 3147 /* Calculate payload length */
3148 olinfo_status |= ((m_head->m_pkthdr.len - hdrlen)
3149 << E1000_ADVTXD_PAYLEN_SHIFT);
3150
3151 /* 82575 needs the queue index added */
3152 if (txr->sc->hw.mac.type == e1000_82575)
3153 olinfo_status |= txr->me << 4;
3154
3155 /* Set up our transmit descriptors */
3156 i = txr->next_avail_desc;
3157 for (j = 0; j < nsegs; j++) {
3158 bus_size_t seg_len;
3159 bus_addr_t seg_addr;
3160
3161 tx_buf = &txr->tx_buf[i];
3162 txd = (union e1000_adv_tx_desc *)&txr->tx_base[i];
3163 seg_addr = segs[j].ds_addr;
3164 seg_len = segs[j].ds_len;
3165
3166 txd->read.buffer_addr = htole64(seg_addr);
3167 txd->read.cmd_type_len = htole32(cmd_type_len | seg_len);
3168 txd->read.olinfo_status = htole32(olinfo_status);
3169 last = i;
91b8700a 3170 if (++i == txr->num_tx_desc)
1f7e3916
SZ		 3171 i = 0;
3172 tx_buf->m_head = NULL;
1f7e3916
SZ		 3173 }
3174
3175 KASSERT(txr->tx_avail > nsegs, ("invalid avail TX desc\n"));
3176 txr->next_avail_desc = i;
3177 txr->tx_avail -= nsegs;
3178
3179 tx_buf->m_head = m_head;
3180 tx_buf_mapped->map = tx_buf->map;
3181 tx_buf->map = map;
3182
3183 /*
b6220144 3184 * Last Descriptor of Packet needs End Of Packet (EOP)
1f7e3916 3185 */
b6220144 3186 txd->read.cmd_type_len |= htole32(E1000_ADVTXD_DCMD_EOP | cmd_rs);
1f7e3916
SZ		 3187
3188 /*
3189 * Advance the Transmit Descriptor Tail (TDT), this tells the E1000
3190 * that this frame is available to transmit.
3191 */
3192 E1000_WRITE_REG(&txr->sc->hw, E1000_TDT(txr->me), i);
3193 ++txr->tx_packets;
3194
3195 return 0;
3196}
3197
3198static void
3199igb_start(struct ifnet *ifp)
3200{
3201 struct igb_softc *sc = ifp->if_softc;
27866bf1 3202 struct igb_tx_ring *txr = &sc->tx_rings[0];
1f7e3916
SZ		 3203 struct mbuf *m_head;
3204
7d235eb5 3205 ASSERT_SERIALIZED(&txr->tx_serialize);
1f7e3916 3206
9c0ecdcc 3207 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
1f7e3916
SZ		 3208 return;
3209
3210 if (!sc->link_active) {
3211 ifq_purge(&ifp->if_snd);
3212 return;
3213 }
3214
b6220144 3215 if (!IGB_IS_NOT_OACTIVE(txr))
1f7e3916
SZ		 3216 igb_txeof(txr);
3217
3218 while (!ifq_is_empty(&ifp->if_snd)) {
b6220144 3219 if (IGB_IS_OACTIVE(txr)) {
1f7e3916
SZ		 3220 ifp->if_flags |= IFF_OACTIVE;
3221 /* Set watchdog on */
3222 ifp->if_timer = 5;
3223 break;
3224 }
3225
3226 m_head = ifq_dequeue(&ifp->if_snd, NULL);
3227 if (m_head == NULL)
3228 break;
3229
3230 if (igb_encap(txr, &m_head)) {
3231 ifp->if_oerrors++;
3232 continue;
3233 }
3234
3235 /* Send a copy of the frame to the BPF listener */
3236 ETHER_BPF_MTAP(ifp, m_head);
3237 }
3238}
3239
3240static void
3241igb_watchdog(struct ifnet *ifp)
3242{
3243 struct igb_softc *sc = ifp->if_softc;
27866bf1 3244 struct igb_tx_ring *txr = &sc->tx_rings[0];
1f7e3916
SZ		 3245
3246 ASSERT_IFNET_SERIALIZED_ALL(ifp);
3247
3248 /*
3249 * If flow control has paused us since last checking
3250 * it invalidates the watchdog timing, so dont run it.
3251 */
3252 if (sc->pause_frames) {
3253 sc->pause_frames = 0;
3254 ifp->if_timer = 5;
3255 return;
3256 }
3257
3258 if_printf(ifp, "Watchdog timeout -- resetting\n");
3259 if_printf(ifp, "Queue(%d) tdh = %d, hw tdt = %d\n", txr->me,
3260 E1000_READ_REG(&sc->hw, E1000_TDH(txr->me)),
3261 E1000_READ_REG(&sc->hw, E1000_TDT(txr->me)));
3262 if_printf(ifp, "TX(%d) desc avail = %d, "
3263 "Next TX to Clean = %d\n",
3264 txr->me, txr->tx_avail, txr->next_to_clean);
3265
3266 ifp->if_oerrors++;
3267 sc->watchdog_events++;
3268
3269 igb_init(sc);
3270 if (!ifq_is_empty(&ifp->if_snd))
3271 if_devstart(ifp);
3272}
3273
3274static void
9c0ecdcc 3275igb_set_eitr(struct igb_softc *sc, int idx, int rate)
1f7e3916 3276{
9c0ecdcc 3277 uint32_t eitr = 0;
1f7e3916 3278
9c0ecdcc 3279 if (rate > 0) {
1f7e3916 3280 if (sc->hw.mac.type == e1000_82575) {
9c0ecdcc 3281 eitr = 1000000000 / 256 / rate;
1f7e3916
SZ		 3282 /*
3283 * NOTE:
3284 * Document is wrong on the 2 bits left shift
3285 */
3286 } else {
9c0ecdcc 3287 eitr = 1000000 / rate;
d4beffa9
SZ		 3288 eitr <<= IGB_EITR_INTVL_SHIFT;
3289 }
3290
3291 if (eitr == 0) {
3292 /* Don't disable it */
3293 eitr = 1 << IGB_EITR_INTVL_SHIFT;
3294 } else if (eitr > IGB_EITR_INTVL_MASK) {
3295 /* Don't allow it to be too large */
3296 eitr = IGB_EITR_INTVL_MASK;
1f7e3916 3297 }
1f7e3916
SZ		 3298 }
3299 if (sc->hw.mac.type == e1000_82575)
9c0ecdcc 3300 eitr |= eitr << 16;
1f7e3916 3301 else
9c0ecdcc
SZ		 3302 eitr |= E1000_EITR_CNT_IGNR;
3303 E1000_WRITE_REG(&sc->hw, E1000_EITR(idx), eitr);
1f7e3916
SZ		 3304}
3305
3306static int
3307igb_sysctl_intr_rate(SYSCTL_HANDLER_ARGS)
3308{
3309 struct igb_softc *sc = (void *)arg1;
3310 struct ifnet *ifp = &sc->arpcom.ac_if;
3311 int error, intr_rate;
3312
3313 intr_rate = sc->intr_rate;
3314 error = sysctl_handle_int(oidp, &intr_rate, 0, req);
3315 if (error || req->newptr == NULL)
3316 return error;
3317 if (intr_rate < 0)
3318 return EINVAL;
3319
3320 ifnet_serialize_all(ifp);
3321
3322 sc->intr_rate = intr_rate;
3323 if (ifp->if_flags & IFF_RUNNING)
9c0ecdcc
SZ		 3324 igb_set_eitr(sc, 0, sc->intr_rate);
3325
3326 if (bootverbose)
3327 if_printf(ifp, "interrupt rate set to %d/sec\n", sc->intr_rate);
1f7e3916
SZ		 3328
3329 ifnet_deserialize_all(ifp);
3330
9c0ecdcc
SZ		 3331 return 0;
3332}
3333
3334static int
3335igb_sysctl_msix_rate(SYSCTL_HANDLER_ARGS)
3336{
3337 struct igb_msix_data *msix = (void *)arg1;
3338 struct igb_softc *sc = msix->msix_sc;
3339 struct ifnet *ifp = &sc->arpcom.ac_if;
3340 int error, msix_rate;
3341
3342 msix_rate = msix->msix_rate;
3343 error = sysctl_handle_int(oidp, &msix_rate, 0, req);
3344 if (error || req->newptr == NULL)
3345 return error;
3346 if (msix_rate < 0)
3347 return EINVAL;
3348
3349 lwkt_serialize_enter(msix->msix_serialize);
3350
3351 msix->msix_rate = msix_rate;
3352 if (ifp->if_flags & IFF_RUNNING)
3353 igb_set_eitr(sc, msix->msix_vector, msix->msix_rate);
3354
3355 if (bootverbose) {
3356 if_printf(ifp, "%s set to %d/sec\n", msix->msix_rate_desc,
3357 msix->msix_rate);
3358 }
3359
3360 lwkt_serialize_exit(msix->msix_serialize);
3361
1f7e3916
SZ		 3362 return 0;
3363}
b6220144
SZ		 3364
3365static int
3366igb_sysctl_tx_intr_nsegs(SYSCTL_HANDLER_ARGS)
3367{
3368 struct igb_softc *sc = (void *)arg1;
3369 struct ifnet *ifp = &sc->arpcom.ac_if;
27866bf1 3370 struct igb_tx_ring *txr = &sc->tx_rings[0];
b6220144
SZ		 3371 int error, nsegs;
3372
3373 nsegs = txr->intr_nsegs;
3374 error = sysctl_handle_int(oidp, &nsegs, 0, req);
3375 if (error || req->newptr == NULL)
3376 return error;
3377 if (nsegs <= 0)
3378 return EINVAL;
3379
3380 ifnet_serialize_all(ifp);
3381
91b8700a 3382 if (nsegs >= txr->num_tx_desc - txr->oact_lo_desc ||
b6220144
SZ		 3383 nsegs >= txr->oact_hi_desc - IGB_MAX_SCATTER) {
3384 error = EINVAL;
3385 } else {
3386 error = 0;
3387 txr->intr_nsegs = nsegs;
3388 }
3389
3390 ifnet_deserialize_all(ifp);
3391
3392 return error;
3393}
f6167a56
SZ		 3394
3395static void
3396igb_init_intr(struct igb_softc *sc)
3397{
be922da6 3398 igb_set_intr_mask(sc);
9c0ecdcc
SZ		 3399
3400 if ((sc->flags & IGB_FLAG_SHARED_INTR) == 0)
f6167a56 3401 igb_init_unshared_intr(sc);
9c0ecdcc
SZ		 3402
3403 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
3404 igb_set_eitr(sc, 0, sc->intr_rate);
3405 } else {
3406 int i;
3407
3408 for (i = 0; i < sc->msix_cnt; ++i)
3409 igb_set_eitr(sc, i, sc->msix_data[i].msix_rate);
3410 }
f6167a56
SZ		 3411}
3412
3413static void
3414igb_init_unshared_intr(struct igb_softc *sc)
3415{
3416 struct e1000_hw *hw = &sc->hw;
3417 const struct igb_rx_ring *rxr;
3418 const struct igb_tx_ring *txr;
3419 uint32_t ivar, index;
3420 int i;
3421
3422 /*
3423 * Enable extended mode
3424 */
3425 if (sc->hw.mac.type != e1000_82575) {
9c0ecdcc
SZ		 3426 uint32_t gpie;
3427 int ivar_max;
3428
3429 gpie = E1000_GPIE_NSICR;
3430 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3431 gpie |= E1000_GPIE_MSIX_MODE |
3432 E1000_GPIE_EIAME |
3433 E1000_GPIE_PBA;
3434 }
3435 E1000_WRITE_REG(hw, E1000_GPIE, gpie);
3436
3437 /*
3438 * Clear IVARs
3439 */
3440 switch (sc->hw.mac.type) {
3441 case e1000_82580:
3442 ivar_max = IGB_MAX_IVAR_82580;
3443 break;
3444
3445 case e1000_i350:
3446 ivar_max = IGB_MAX_IVAR_I350;
3447 break;
3448
3449 case e1000_vfadapt:
3450 case e1000_vfadapt_i350:
3451 ivar_max = IGB_MAX_IVAR_VF;
3452 break;
3453
3454 case e1000_82576:
3455 ivar_max = IGB_MAX_IVAR_82576;
3456 break;
3457
3458 default:
3459 panic("unknown mac type %d\n", sc->hw.mac.type);
3460 }
3461 for (i = 0; i < ivar_max; ++i)
3462 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, i, 0);
3463 E1000_WRITE_REG(hw, E1000_IVAR_MISC, 0);
f6167a56
SZ		 3464 } else {
3465 uint32_t tmp;
3466
9c0ecdcc
SZ		 3467 KASSERT(sc->intr_type != PCI_INTR_TYPE_MSIX,
3468 ("82575 w/ MSI-X"));
f6167a56
SZ		 3469 tmp = E1000_READ_REG(hw, E1000_CTRL_EXT);
3470 tmp |= E1000_CTRL_EXT_IRCA;
3471 E1000_WRITE_REG(hw, E1000_CTRL_EXT, tmp);
3472 }
3473
3474 /*
3475 * Map TX/RX interrupts to EICR
3476 */
3477 switch (sc->hw.mac.type) {
3478 case e1000_82580:
3479 case e1000_i350:
3480 case e1000_vfadapt:
3481 case e1000_vfadapt_i350:
3482 /* RX entries */
be922da6 3483 for (i = 0; i < sc->rx_ring_inuse; ++i) {
f6167a56
SZ		 3484 rxr = &sc->rx_rings[i];
3485
3486 index = i >> 1;
3487 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3488
3489 if (i & 1) {
3490 ivar &= 0xff00ffff;
3491 ivar |=
3492 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3493 } else {
3494 ivar &= 0xffffff00;
3495 ivar |=
3496 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3497 }
3498 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3499 }
3500 /* TX entries */
27866bf1 3501 for (i = 0; i < sc->tx_ring_cnt; ++i) {
f6167a56
SZ		 3502 txr = &sc->tx_rings[i];
3503
3504 index = i >> 1;
3505 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3506
3507 if (i & 1) {
3508 ivar &= 0x00ffffff;
3509 ivar |=
3510 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3511 } else {
3512 ivar &= 0xffff00ff;
3513 ivar |=
3514 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3515 }
3516 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3517 }
9c0ecdcc
SZ		 3518 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3519 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3520 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3521 }
f6167a56
SZ		 3522 break;
3523
3524 case e1000_82576:
3525 /* RX entries */
be922da6 3526 for (i = 0; i < sc->rx_ring_inuse; ++i) {
f6167a56
SZ		 3527 rxr = &sc->rx_rings[i];
3528
3529 index = i & 0x7; /* Each IVAR has two entries */
3530 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3531
3532 if (i < 8) {
3533 ivar &= 0xffffff00;
3534 ivar |=
3535 (rxr->rx_intr_bit | E1000_IVAR_VALID);
3536 } else {
3537 ivar &= 0xff00ffff;
3538 ivar |=
3539 (rxr->rx_intr_bit | E1000_IVAR_VALID) << 16;
3540 }
3541 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3542 }
3543 /* TX entries */
27866bf1 3544 for (i = 0; i < sc->tx_ring_cnt; ++i) {
f6167a56
SZ		 3545 txr = &sc->tx_rings[i];
3546
3547 index = i & 0x7; /* Each IVAR has two entries */
3548 ivar = E1000_READ_REG_ARRAY(hw, E1000_IVAR0, index);
3549
3550 if (i < 8) {
3551 ivar &= 0xffff00ff;
3552 ivar |=
3553 (txr->tx_intr_bit | E1000_IVAR_VALID) << 8;
3554 } else {
3555 ivar &= 0x00ffffff;
3556 ivar |=
3557 (txr->tx_intr_bit | E1000_IVAR_VALID) << 24;
3558 }
3559 E1000_WRITE_REG_ARRAY(hw, E1000_IVAR0, index, ivar);
3560 }
9c0ecdcc
SZ		 3561 if (sc->intr_type == PCI_INTR_TYPE_MSIX) {
3562 ivar = (sc->sts_intr_bit | E1000_IVAR_VALID) << 8;
3563 E1000_WRITE_REG(hw, E1000_IVAR_MISC, ivar);
3564 }
f6167a56
SZ		 3565 break;
3566
3567 case e1000_82575:
3568 /*
3569 * Enable necessary interrupt bits.
3570 *
3571 * The name of the register is confusing; in addition to
3572 * configuring the first vector of MSI-X, it also configures
3573 * which bits of EICR could be set by the hardware even when
3574 * MSI or line interrupt is used; it thus controls interrupt
3575 * generation. It MUST be configured explicitly; the default
3576 * value mentioned in the datasheet is wrong: RX queue0 and
3577 * TX queue0 are NOT enabled by default.
3578 */
3579 E1000_WRITE_REG(&sc->hw, E1000_MSIXBM(0), sc->intr_mask);
3580 break;
3581
3582 default:
9c0ecdcc 3583 panic("unknown mac type %d\n", sc->hw.mac.type);
f6167a56 3584 }
f6167a56
SZ		 3585}
3586
3587static int
3588igb_setup_intr(struct igb_softc *sc)
3589{
3590 struct ifnet *ifp = &sc->arpcom.ac_if;
9c0ecdcc 3591 int error;
f6167a56 3592
9c0ecdcc
SZ		 3593 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3594 return igb_msix_setup(sc);
f6167a56 3595
f6167a56 3596 error = bus_setup_intr(sc->dev, sc->intr_res, INTR_MPSAFE,
9c0ecdcc 3597 (sc->flags & IGB_FLAG_SHARED_INTR) ? igb_intr_shared : igb_intr,
7d235eb5 3598 sc, &sc->intr_tag, &sc->main_serialize);
f6167a56
SZ		 3599 if (error) {
3600 device_printf(sc->dev, "Failed to register interrupt handler");
3601 return error;
3602 }
3603
3604 ifp->if_cpuid = rman_get_cpuid(sc->intr_res);
3605 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
3606
3607 return 0;
3608}
3609
3610static void
9c0ecdcc 3611igb_set_txintr_mask(struct igb_tx_ring *txr, int *intr_bit0, int intr_bitmax)
f6167a56
SZ		 3612{
3613 if (txr->sc->hw.mac.type == e1000_82575) {
3614 txr->tx_intr_bit = 0; /* unused */
3615 switch (txr->me) {
3616 case 0:
3617 txr->tx_intr_mask = E1000_EICR_TX_QUEUE0;
3618 break;
3619 case 1:
3620 txr->tx_intr_mask = E1000_EICR_TX_QUEUE1;
3621 break;
3622 case 2:
3623 txr->tx_intr_mask = E1000_EICR_TX_QUEUE2;
3624 break;
3625 case 3:
3626 txr->tx_intr_mask = E1000_EICR_TX_QUEUE3;
3627 break;
3628 default:
3629 panic("unsupported # of TX ring, %d\n", txr->me);
3630 }
3631 } else {
8d6600da
SZ		 3632 int intr_bit = *intr_bit0;
3633
3634 txr->tx_intr_bit = intr_bit % intr_bitmax;
f6167a56 3635 txr->tx_intr_mask = 1 << txr->tx_intr_bit;
8d6600da
SZ		 3636
3637 *intr_bit0 = intr_bit + 1;
f6167a56
SZ		 3638 }
3639}
3640
3641static void
9c0ecdcc 3642igb_set_rxintr_mask(struct igb_rx_ring *rxr, int *intr_bit0, int intr_bitmax)
f6167a56
SZ		 3643{
3644 if (rxr->sc->hw.mac.type == e1000_82575) {
3645 rxr->rx_intr_bit = 0; /* unused */
3646 switch (rxr->me) {
3647 case 0:
3648 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE0;
3649 break;
3650 case 1:
3651 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE1;
3652 break;
3653 case 2:
3654 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE2;
3655 break;
3656 case 3:
3657 rxr->rx_intr_mask = E1000_EICR_RX_QUEUE3;
3658 break;
3659 default:
3660 panic("unsupported # of RX ring, %d\n", rxr->me);
3661 }
3662 } else {
8d6600da
SZ		 3663 int intr_bit = *intr_bit0;
3664
3665 rxr->rx_intr_bit = intr_bit % intr_bitmax;
f6167a56 3666 rxr->rx_intr_mask = 1 << rxr->rx_intr_bit;
8d6600da
SZ		 3667
3668 *intr_bit0 = intr_bit + 1;
f6167a56
SZ		 3669 }
3670}
7d235eb5
SZ		 3671
3672static void
3673igb_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3674{
3675 struct igb_softc *sc = ifp->if_softc;
3676
3677 ifnet_serialize_array_enter(sc->serializes, sc->serialize_cnt,
3678 sc->tx_serialize, sc->rx_serialize, slz);
3679}
3680
3681static void
3682igb_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3683{
3684 struct igb_softc *sc = ifp->if_softc;
3685
3686 ifnet_serialize_array_exit(sc->serializes, sc->serialize_cnt,
3687 sc->tx_serialize, sc->rx_serialize, slz);
3688}
3689
3690static int
3691igb_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3692{
3693 struct igb_softc *sc = ifp->if_softc;
3694
3695 return ifnet_serialize_array_try(sc->serializes, sc->serialize_cnt,
3696 sc->tx_serialize, sc->rx_serialize, slz);
3697}
3698
7d235eb5
SZ		 3699#ifdef INVARIANTS
3700
3701static void
3702igb_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3703 boolean_t serialized)
3704{
3705 struct igb_softc *sc = ifp->if_softc;
3706
3707 ifnet_serialize_array_assert(sc->serializes, sc->serialize_cnt,
3708 sc->tx_serialize, sc->rx_serialize, slz, serialized);
3709}
3710
3711#endif /* INVARIANTS */
be922da6
SZ		 3712
3713static void
3714igb_set_intr_mask(struct igb_softc *sc)
3715{
3716 int i;
3717
9c0ecdcc 3718 sc->intr_mask = sc->sts_intr_mask;
be922da6
SZ		 3719 for (i = 0; i < sc->rx_ring_inuse; ++i)
3720 sc->intr_mask |= sc->rx_rings[i].rx_intr_mask;
3721 for (i = 0; i < sc->tx_ring_cnt; ++i)
3722 sc->intr_mask |= sc->tx_rings[i].tx_intr_mask;
9c0ecdcc
SZ		 3723 if (bootverbose)
3724 device_printf(sc->dev, "intr mask 0x%08x\n", sc->intr_mask);
be922da6 3725}
3c7cc5e2
SZ		 3726
3727static int
3728igb_alloc_intr(struct igb_softc *sc)
3729{
9c0ecdcc 3730 int i, intr_bit, intr_bitmax;
3c7cc5e2
SZ		 3731 u_int intr_flags;
3732
9c0ecdcc
SZ		 3733 igb_msix_try_alloc(sc);
3734 if (sc->intr_type == PCI_INTR_TYPE_MSIX)
3735 goto done;
3736
3737 /*
3738 * Allocate MSI/legacy interrupt resource
3739 */
3c7cc5e2
SZ		 3740 sc->intr_type = pci_alloc_1intr(sc->dev, igb_msi_enable,
3741 &sc->intr_rid, &intr_flags);
3742
677d7b99
SZ		 3743 if (sc->intr_type == PCI_INTR_TYPE_LEGACY) {
3744 int unshared;
3745
3746 unshared = device_getenv_int(sc->dev, "irq.unshared", 0);
3747 if (!unshared) {
3748 sc->flags |= IGB_FLAG_SHARED_INTR;
3749 if (bootverbose)
3750 device_printf(sc->dev, "IRQ shared\n");
3751 } else {
3752 intr_flags &= ~RF_SHAREABLE;
3753 if (bootverbose)
3754 device_printf(sc->dev, "IRQ unshared\n");
3755 }
3756 }
3757
3c7cc5e2
SZ		 3758 sc->intr_res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ,
3759 &sc->intr_rid, intr_flags);
3760 if (sc->intr_res == NULL) {
3761 device_printf(sc->dev, "Unable to allocate bus resource: "
3762 "interrupt\n");
3763 return ENXIO;
3764 }
9c0ecdcc
SZ		 3765
3766 /*
3767 * Setup MSI/legacy interrupt mask
3768 */
3769 switch (sc->hw.mac.type) {
3770 case e1000_82575:
3771 intr_bitmax = IGB_MAX_TXRXINT_82575;
3772 break;
3773 case e1000_82580:
3774 intr_bitmax = IGB_MAX_TXRXINT_82580;
3775 break;
3776 case e1000_i350:
3777 intr_bitmax = IGB_MAX_TXRXINT_I350;
3778 break;
3779 case e1000_82576:
3780 intr_bitmax = IGB_MAX_TXRXINT_82576;
3781 break;
3782 default:
3783 intr_bitmax = IGB_MIN_TXRXINT;
3784 break;
3785 }
3786 intr_bit = 0;
3787 for (i = 0; i < sc->tx_ring_cnt; ++i)
3788 igb_set_txintr_mask(&sc->tx_rings[i], &intr_bit, intr_bitmax);
3789 for (i = 0; i < sc->rx_ring_cnt; ++i)
3790 igb_set_rxintr_mask(&sc->rx_rings[i], &intr_bit, intr_bitmax);
3791 sc->sts_intr_bit = 0;
3792 sc->sts_intr_mask = E1000_EICR_OTHER;
3793
3794 /* Initialize interrupt rate */
3795 sc->intr_rate = IGB_INTR_RATE;
3796done:
3797 igb_set_ring_inuse(sc, FALSE);
3798 igb_set_intr_mask(sc);
3c7cc5e2
SZ		 3799 return 0;
3800}
3801
3802static void
3803igb_free_intr(struct igb_softc *sc)
3804{
9c0ecdcc
SZ		 3805 if (sc->intr_type != PCI_INTR_TYPE_MSIX) {
3806 if (sc->intr_res != NULL) {
3807 bus_release_resource(sc->dev, SYS_RES_IRQ, sc->intr_rid,
3808 sc->intr_res);
3809 }
3810 if (sc->intr_type == PCI_INTR_TYPE_MSI)
3811 pci_release_msi(sc->dev);
3812 } else {
3813 igb_msix_free(sc, TRUE);
3814 }
3815}
3816
3817static void
3818igb_teardown_intr(struct igb_softc *sc)
3819{
3820 if (sc->intr_type != PCI_INTR_TYPE_MSIX)
3821 bus_teardown_intr(sc->dev, sc->intr_res, sc->intr_tag);
3822 else
3823 igb_msix_teardown(sc, sc->msix_cnt);
3824}
3825
3826static void
3827igb_msix_try_alloc(struct igb_softc *sc)
3828{
3829 int msix_enable, msix_cnt, msix_cnt2, alloc_cnt;
3830 int i, x, error;
3831 struct igb_msix_data *msix;
3832 boolean_t aggregate, setup = FALSE;
3833
3834 /*
fea3f48a
SZ		 3835 * Don't enable MSI-X on 82575, see:
3836 * 82575 specification update errata #25
9c0ecdcc
SZ		 3837 */
3838 if (sc->hw.mac.type == e1000_82575)
3839 return;
3840
3841 /* Don't enable MSI-X on VF */
3842 if (sc->vf_ifp)
3843 return;
3844
3845 msix_enable = device_getenv_int(sc->dev, "msix.enable",
3846 igb_msix_enable);
3847 if (!msix_enable)
3848 return;
3849
3850 msix_cnt = pci_msix_count(sc->dev);
3851#ifdef IGB_MSIX_DEBUG
3852 msix_cnt = device_getenv_int(sc->dev, "msix.count", msix_cnt);
3853#endif
3854 if (msix_cnt <= 1) {
3855 /* One MSI-X model does not make sense */
3856 return;
3857 }
3858
3859 i = 0;
3860 while ((1 << (i + 1)) <= msix_cnt)
3861 ++i;
3862 msix_cnt2 = 1 << i;
3863
3864 if (bootverbose) {
3865 device_printf(sc->dev, "MSI-X count %d/%d\n",
3866 msix_cnt2, msix_cnt);
3867 }
3868
3869 KKASSERT(msix_cnt2 <= msix_cnt);
3870 if (msix_cnt == msix_cnt2) {
3871 /* We need at least one MSI-X for link status */