1/*-
2 * Copyright (c) 2012-2016 Solarflare Communications Inc.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 *    this list of conditions and the following disclaimer in the documentation
12 *    and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * The views and conclusions contained in the software and documentation are
27 * those of the authors and should not be interpreted as representing official
28 * policies, either expressed or implied, of the FreeBSD Project.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include "efx.h"
35#include "efx_impl.h"
36
37#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
38
39	__checkReturn	efx_rc_t
40ef10_mac_poll(
41	__in		efx_nic_t *enp,
42	__out		efx_link_mode_t *link_modep)
43{
44	efx_port_t *epp = &(enp->en_port);
45	ef10_link_state_t els;
46	efx_rc_t rc;
47
48	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
49		goto fail1;
50
51	epp->ep_adv_cap_mask = els.epls.epls_adv_cap_mask;
52	epp->ep_fcntl = els.epls.epls_fcntl;
53
54	*link_modep = els.epls.epls_link_mode;
55
56	return (0);
57
58fail1:
59	EFSYS_PROBE1(fail1, efx_rc_t, rc);
60
61	*link_modep = EFX_LINK_UNKNOWN;
62
63	return (rc);
64}
65
66	__checkReturn	efx_rc_t
67ef10_mac_up(
68	__in		efx_nic_t *enp,
69	__out		boolean_t *mac_upp)
70{
71	ef10_link_state_t els;
72	efx_rc_t rc;
73
74	/*
75	 * Because EF10 doesn't *require* polling, we can't rely on
76	 * ef10_mac_poll() being executed to populate epp->ep_mac_up.
77	 */
78	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
79		goto fail1;
80
81	*mac_upp = els.els_mac_up;
82
83	return (0);
84
85fail1:
86	EFSYS_PROBE1(fail1, efx_rc_t, rc);
87
88	return (rc);
89}
90
91/*
92 * EF10 adapters use MC_CMD_VADAPTOR_SET_MAC to set the
93 * MAC address; the address field in MC_CMD_SET_MAC has no
94 * effect.
95 * MC_CMD_VADAPTOR_SET_MAC requires mac-spoofing privilege and
96 * the port to have no filters or queues active.
97 */
98static	__checkReturn	efx_rc_t
99efx_mcdi_vadapter_set_mac(
100	__in		efx_nic_t *enp)
101{
102	efx_port_t *epp = &(enp->en_port);
103	efx_mcdi_req_t req;
104	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_VADAPTOR_SET_MAC_IN_LEN,
105		MC_CMD_VADAPTOR_SET_MAC_OUT_LEN);
106	efx_rc_t rc;
107
108	req.emr_cmd = MC_CMD_VADAPTOR_SET_MAC;
109	req.emr_in_buf = payload;
110	req.emr_in_length = MC_CMD_VADAPTOR_SET_MAC_IN_LEN;
111	req.emr_out_buf = payload;
112	req.emr_out_length = MC_CMD_VADAPTOR_SET_MAC_OUT_LEN;
113
114	MCDI_IN_SET_DWORD(req, VADAPTOR_SET_MAC_IN_UPSTREAM_PORT_ID,
115	    enp->en_vport_id);
116	EFX_MAC_ADDR_COPY(MCDI_IN2(req, uint8_t, VADAPTOR_SET_MAC_IN_MACADDR),
117	    epp->ep_mac_addr);
118
119	efx_mcdi_execute(enp, &req);
120
121	if (req.emr_rc != 0) {
122		rc = req.emr_rc;
123		goto fail1;
124	}
125
126	return (0);
127
128fail1:
129	EFSYS_PROBE1(fail1, efx_rc_t, rc);
130
131	return (rc);
132}
133
134	__checkReturn	efx_rc_t
135ef10_mac_addr_set(
136	__in		efx_nic_t *enp)
137{
138	efx_rc_t rc;
139
140	if ((rc = efx_mcdi_vadapter_set_mac(enp)) != 0) {
141		if (rc != ENOTSUP)
142			goto fail1;
143
144		/*
145		 * Fallback for older Huntington firmware without Vadapter
146		 * support.
147		 */
148		if ((rc = ef10_mac_reconfigure(enp)) != 0)
149			goto fail2;
150	}
151
152	return (0);
153
154fail2:
155	EFSYS_PROBE(fail2);
156
157fail1:
158	EFSYS_PROBE1(fail1, efx_rc_t, rc);
159
160	return (rc);
161}
162
163static	__checkReturn	efx_rc_t
164efx_mcdi_mtu_set(
165	__in		efx_nic_t *enp,
166	__in		uint32_t mtu)
167{
168	efx_mcdi_req_t req;
169	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SET_MAC_EXT_IN_LEN,
170		MC_CMD_SET_MAC_OUT_LEN);
171	efx_rc_t rc;
172
173	req.emr_cmd = MC_CMD_SET_MAC;
174	req.emr_in_buf = payload;
175	req.emr_in_length = MC_CMD_SET_MAC_EXT_IN_LEN;
176	req.emr_out_buf = payload;
177	req.emr_out_length = MC_CMD_SET_MAC_OUT_LEN;
178
179	/* Only configure the MTU in this call to MC_CMD_SET_MAC */
180	MCDI_IN_SET_DWORD(req, SET_MAC_EXT_IN_MTU, mtu);
181	MCDI_IN_POPULATE_DWORD_1(req, SET_MAC_EXT_IN_CONTROL,
182			    SET_MAC_EXT_IN_CFG_MTU, 1);
183
184	efx_mcdi_execute(enp, &req);
185
186	if (req.emr_rc != 0) {
187		rc = req.emr_rc;
188		goto fail1;
189	}
190
191	return (0);
192
193fail1:
194	EFSYS_PROBE1(fail1, efx_rc_t, rc);
195
196	return (rc);
197}
198
199static	__checkReturn		efx_rc_t
200efx_mcdi_mtu_get(
201	__in		efx_nic_t *enp,
202	__out		size_t *mtu)
203{
204	efx_mcdi_req_t req;
205	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SET_MAC_EXT_IN_LEN,
206		MC_CMD_SET_MAC_V2_OUT_LEN);
207	efx_rc_t rc;
208
209	req.emr_cmd = MC_CMD_SET_MAC;
210	req.emr_in_buf = payload;
211	req.emr_in_length = MC_CMD_SET_MAC_EXT_IN_LEN;
212	req.emr_out_buf = payload;
213	req.emr_out_length = MC_CMD_SET_MAC_V2_OUT_LEN;
214
215	/*
216	 * With MC_CMD_SET_MAC_EXT_IN_CONTROL set to 0, this just queries the
217	 * MTU.  This should always be supported on Medford, but it is not
218	 * supported on older Huntington firmware.
219	 */
220	MCDI_IN_SET_DWORD(req, SET_MAC_EXT_IN_CONTROL, 0);
221
222	efx_mcdi_execute(enp, &req);
223
224	if (req.emr_rc != 0) {
225		rc = req.emr_rc;
226		goto fail1;
227	}
228	if (req.emr_out_length_used < MC_CMD_SET_MAC_V2_OUT_MTU_OFST + 4) {
229		rc = EMSGSIZE;
230		goto fail2;
231	}
232
233	*mtu = MCDI_OUT_DWORD(req, SET_MAC_V2_OUT_MTU);
234
235	return (0);
236
237fail2:
238	EFSYS_PROBE(fail2);
239fail1:
240	EFSYS_PROBE1(fail1, efx_rc_t, rc);
241
242	return (rc);
243}
244
245	__checkReturn	efx_rc_t
246ef10_mac_pdu_set(
247	__in		efx_nic_t *enp)
248{
249	efx_port_t *epp = &(enp->en_port);
250	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
251	efx_rc_t rc;
252
253	if (encp->enc_enhanced_set_mac_supported) {
254		if ((rc = efx_mcdi_mtu_set(enp, epp->ep_mac_pdu)) != 0)
255			goto fail1;
256	} else {
257		/*
258		 * Fallback for older Huntington firmware, which always
259		 * configure all of the parameters to MC_CMD_SET_MAC. This isn't
260		 * suitable for setting the MTU on unpriviliged functions.
261		 */
262		if ((rc = ef10_mac_reconfigure(enp)) != 0)
263			goto fail2;
264	}
265
266	return (0);
267
268fail2:
269	EFSYS_PROBE(fail2);
270fail1:
271	EFSYS_PROBE1(fail1, efx_rc_t, rc);
272
273	return (rc);
274}
275
276	__checkReturn		efx_rc_t
277ef10_mac_pdu_get(
278	__in		efx_nic_t *enp,
279	__out		size_t *pdu)
280{
281	efx_rc_t rc;
282
283	if ((rc = efx_mcdi_mtu_get(enp, pdu)) != 0)
284		goto fail1;
285
286	return (0);
287
288fail1:
289	EFSYS_PROBE1(fail1, efx_rc_t, rc);
290
291	return (rc);
292}
293
294__checkReturn	efx_rc_t
295ef10_mac_reconfigure(
296	__in		efx_nic_t *enp)
297{
298	efx_port_t *epp = &(enp->en_port);
299	efx_mcdi_req_t req;
300	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SET_MAC_IN_LEN,
301		MC_CMD_SET_MAC_OUT_LEN);
302	efx_rc_t rc;
303
304	req.emr_cmd = MC_CMD_SET_MAC;
305	req.emr_in_buf = payload;
306	req.emr_in_length = MC_CMD_SET_MAC_IN_LEN;
307	req.emr_out_buf = payload;
308	req.emr_out_length = MC_CMD_SET_MAC_OUT_LEN;
309
310	MCDI_IN_SET_DWORD(req, SET_MAC_IN_MTU, epp->ep_mac_pdu);
311	MCDI_IN_SET_DWORD(req, SET_MAC_IN_DRAIN, epp->ep_mac_drain ? 1 : 0);
312	EFX_MAC_ADDR_COPY(MCDI_IN2(req, uint8_t, SET_MAC_IN_ADDR),
313			    epp->ep_mac_addr);
314
315	/*
316	 * Note: The Huntington MAC does not support REJECT_BRDCST.
317	 * The REJECT_UNCST flag will also prevent multicast traffic
318	 * from reaching the filters. As Huntington filters drop any
319	 * traffic that does not match a filter it is ok to leave the
320	 * MAC running in promiscuous mode. See bug41141.
321	 *
322	 * FIXME: Does REJECT_UNCST behave the same way on Medford?
323	 */
324	MCDI_IN_POPULATE_DWORD_2(req, SET_MAC_IN_REJECT,
325				    SET_MAC_IN_REJECT_UNCST, 0,
326				    SET_MAC_IN_REJECT_BRDCST, 0);
327
328	/*
329	 * Flow control, whether it is auto-negotiated or not,
330	 * is set via the PHY advertised capabilities.  When set to
331	 * automatic the MAC will use the PHY settings to determine
332	 * the flow control settings.
333	 */
334	MCDI_IN_SET_DWORD(req, SET_MAC_IN_FCNTL, MC_CMD_FCNTL_AUTO);
335
336	/* Do not include the Ethernet frame checksum in RX packets */
337	MCDI_IN_POPULATE_DWORD_1(req, SET_MAC_IN_FLAGS,
338				    SET_MAC_IN_FLAG_INCLUDE_FCS, 0);
339
340	efx_mcdi_execute_quiet(enp, &req);
341
342	if (req.emr_rc != 0) {
343		/*
344		 * Unprivileged functions cannot control link state,
345		 * but still need to configure filters.
346		 */
347		if (req.emr_rc != EACCES) {
348			rc = req.emr_rc;
349			goto fail1;
350		}
351	}
352
353	/*
354	 * Apply the filters for the MAC configuration.
355	 * If the NIC isn't ready to accept filters this may
356	 * return success without setting anything.
357	 */
358	rc = efx_filter_reconfigure(enp, epp->ep_mac_addr,
359				    epp->ep_all_unicst, epp->ep_mulcst,
360				    epp->ep_all_mulcst, epp->ep_brdcst,
361				    epp->ep_mulcst_addr_list,
362				    epp->ep_mulcst_addr_count);
363
364	return (0);
365
366fail1:
367	EFSYS_PROBE1(fail1, efx_rc_t, rc);
368
369	return (rc);
370}
371
372	__checkReturn			efx_rc_t
373ef10_mac_multicast_list_set(
374	__in				efx_nic_t *enp)
375{
376	efx_port_t *epp = &(enp->en_port);
377	const efx_mac_ops_t *emop = epp->ep_emop;
378	efx_rc_t rc;
379
380	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
381	    enp->en_family == EFX_FAMILY_MEDFORD ||
382	    enp->en_family == EFX_FAMILY_MEDFORD2);
383
384	if ((rc = emop->emo_reconfigure(enp)) != 0)
385		goto fail1;
386
387	return (0);
388
389fail1:
390	EFSYS_PROBE1(fail1, efx_rc_t, rc);
391
392	return (rc);
393}
394
395	__checkReturn	efx_rc_t
396ef10_mac_filter_default_rxq_set(
397	__in		efx_nic_t *enp,
398	__in		efx_rxq_t *erp,
399	__in		boolean_t using_rss)
400{
401	efx_port_t *epp = &(enp->en_port);
402	efx_rxq_t *old_rxq;
403	boolean_t old_using_rss;
404	efx_rc_t rc;
405
406	ef10_filter_get_default_rxq(enp, &old_rxq, &old_using_rss);
407
408	ef10_filter_default_rxq_set(enp, erp, using_rss);
409
410	rc = efx_filter_reconfigure(enp, epp->ep_mac_addr,
411				    epp->ep_all_unicst, epp->ep_mulcst,
412				    epp->ep_all_mulcst, epp->ep_brdcst,
413				    epp->ep_mulcst_addr_list,
414				    epp->ep_mulcst_addr_count);
415
416	if (rc != 0)
417		goto fail1;
418
419	return (0);
420
421fail1:
422	EFSYS_PROBE1(fail1, efx_rc_t, rc);
423
424	ef10_filter_default_rxq_set(enp, old_rxq, old_using_rss);
425
426	return (rc);
427}
428
429			void
430ef10_mac_filter_default_rxq_clear(
431	__in		efx_nic_t *enp)
432{
433	efx_port_t *epp = &(enp->en_port);
434
435	ef10_filter_default_rxq_clear(enp);
436
437	(void) efx_filter_reconfigure(enp, epp->ep_mac_addr,
438				    epp->ep_all_unicst, epp->ep_mulcst,
439				    epp->ep_all_mulcst, epp->ep_brdcst,
440				    epp->ep_mulcst_addr_list,
441				    epp->ep_mulcst_addr_count);
442}
443
444#if EFSYS_OPT_LOOPBACK
445
446	__checkReturn	efx_rc_t
447ef10_mac_loopback_set(
448	__in		efx_nic_t *enp,
449	__in		efx_link_mode_t link_mode,
450	__in		efx_loopback_type_t loopback_type)
451{
452	efx_port_t *epp = &(enp->en_port);
453	const efx_phy_ops_t *epop = epp->ep_epop;
454	efx_loopback_type_t old_loopback_type;
455	efx_link_mode_t old_loopback_link_mode;
456	efx_rc_t rc;
457
458	/* The PHY object handles this on EF10 */
459	old_loopback_type = epp->ep_loopback_type;
460	old_loopback_link_mode = epp->ep_loopback_link_mode;
461	epp->ep_loopback_type = loopback_type;
462	epp->ep_loopback_link_mode = link_mode;
463
464	if ((rc = epop->epo_reconfigure(enp)) != 0)
465		goto fail1;
466
467	return (0);
468
469fail1:
470	EFSYS_PROBE1(fail1, efx_rc_t, rc);
471
472	epp->ep_loopback_type = old_loopback_type;
473	epp->ep_loopback_link_mode = old_loopback_link_mode;
474
475	return (rc);
476}
477
478#endif	/* EFSYS_OPT_LOOPBACK */
479
480#if EFSYS_OPT_MAC_STATS
481
482	__checkReturn			efx_rc_t
483ef10_mac_stats_get_mask(
484	__in				efx_nic_t *enp,
485	__inout_bcount(mask_size)	uint32_t *maskp,
486	__in				size_t mask_size)
487{
488	const struct efx_mac_stats_range ef10_common[] = {
489		{ EFX_MAC_RX_OCTETS, EFX_MAC_RX_GE_15XX_PKTS },
490		{ EFX_MAC_RX_FCS_ERRORS, EFX_MAC_RX_DROP_EVENTS },
491		{ EFX_MAC_RX_JABBER_PKTS, EFX_MAC_RX_JABBER_PKTS },
492		{ EFX_MAC_RX_NODESC_DROP_CNT, EFX_MAC_TX_PAUSE_PKTS },
493	};
494	const struct efx_mac_stats_range ef10_tx_size_bins[] = {
495		{ EFX_MAC_TX_LE_64_PKTS, EFX_MAC_TX_GE_15XX_PKTS },
496	};
497	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
498	efx_port_t *epp = &(enp->en_port);
499	efx_rc_t rc;
500
501	if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
502	    ef10_common, EFX_ARRAY_SIZE(ef10_common))) != 0)
503		goto fail1;
504
505	if (epp->ep_phy_cap_mask & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) {
506		const struct efx_mac_stats_range ef10_40g_extra[] = {
507			{ EFX_MAC_RX_ALIGN_ERRORS, EFX_MAC_RX_ALIGN_ERRORS },
508		};
509
510		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
511		    ef10_40g_extra, EFX_ARRAY_SIZE(ef10_40g_extra))) != 0)
512			goto fail2;
513
514		if (encp->enc_mac_stats_40g_tx_size_bins) {
515			if ((rc = efx_mac_stats_mask_add_ranges(maskp,
516			    mask_size, ef10_tx_size_bins,
517			    EFX_ARRAY_SIZE(ef10_tx_size_bins))) != 0)
518				goto fail3;
519		}
520	} else {
521		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
522		    ef10_tx_size_bins, EFX_ARRAY_SIZE(ef10_tx_size_bins))) != 0)
523			goto fail4;
524	}
525
526	if (encp->enc_pm_and_rxdp_counters) {
527		const struct efx_mac_stats_range ef10_pm_and_rxdp[] = {
528			{ EFX_MAC_PM_TRUNC_BB_OVERFLOW, EFX_MAC_RXDP_HLB_WAIT },
529		};
530
531		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
532		    ef10_pm_and_rxdp, EFX_ARRAY_SIZE(ef10_pm_and_rxdp))) != 0)
533			goto fail5;
534	}
535
536	if (encp->enc_datapath_cap_evb) {
537		const struct efx_mac_stats_range ef10_vadaptor[] = {
538			{ EFX_MAC_VADAPTER_RX_UNICAST_PACKETS,
539			    EFX_MAC_VADAPTER_TX_OVERFLOW },
540		};
541
542		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
543		    ef10_vadaptor, EFX_ARRAY_SIZE(ef10_vadaptor))) != 0)
544			goto fail6;
545	}
546
547	if (encp->enc_fec_counters) {
548		const struct efx_mac_stats_range ef10_fec[] = {
549			{ EFX_MAC_FEC_UNCORRECTED_ERRORS,
550			    EFX_MAC_FEC_CORRECTED_SYMBOLS_LANE3 },
551		};
552		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
553		    ef10_fec, EFX_ARRAY_SIZE(ef10_fec))) != 0)
554			goto fail7;
555	}
556
557	if (encp->enc_mac_stats_nstats >= MC_CMD_MAC_NSTATS_V4) {
558		const struct efx_mac_stats_range ef10_rxdp_sdt[] = {
559			{ EFX_MAC_RXDP_SCATTER_DISABLED_TRUNC,
560			    EFX_MAC_RXDP_SCATTER_DISABLED_TRUNC },
561		};
562
563		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
564		    ef10_rxdp_sdt, EFX_ARRAY_SIZE(ef10_rxdp_sdt))) != 0)
565			goto fail8;
566	}
567
568	if (encp->enc_hlb_counters) {
569		const struct efx_mac_stats_range ef10_hlb[] = {
570			{ EFX_MAC_RXDP_HLB_IDLE, EFX_MAC_RXDP_HLB_TIMEOUT },
571		};
572		if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
573		    ef10_hlb, EFX_ARRAY_SIZE(ef10_hlb))) != 0)
574			goto fail9;
575	}
576
577	return (0);
578
579fail9:
580	EFSYS_PROBE(fail9);
581fail8:
582	EFSYS_PROBE(fail8);
583fail7:
584	EFSYS_PROBE(fail7);
585fail6:
586	EFSYS_PROBE(fail6);
587fail5:
588	EFSYS_PROBE(fail5);
589fail4:
590	EFSYS_PROBE(fail4);
591fail3:
592	EFSYS_PROBE(fail3);
593fail2:
594	EFSYS_PROBE(fail2);
595fail1:
596	EFSYS_PROBE1(fail1, efx_rc_t, rc);
597
598	return (rc);
599}
600
601#define	EF10_MAC_STAT_READ(_esmp, _field, _eqp)			\
602	EFSYS_MEM_READQ((_esmp), (_field) * sizeof (efx_qword_t), _eqp)
603
604	__checkReturn			efx_rc_t
605ef10_mac_stats_update(
606	__in				efx_nic_t *enp,
607	__in				efsys_mem_t *esmp,
608	__inout_ecount(EFX_MAC_NSTATS)	efsys_stat_t *stat,
609	__inout_opt			uint32_t *generationp)
610{
611	const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
612	efx_qword_t generation_start;
613	efx_qword_t generation_end;
614	efx_qword_t value;
615	efx_rc_t rc;
616
617	/*
618	 * The MAC_STATS contain start and end generation counters used to
619	 * detect when the DMA buffer has been updated during stats decode.
620	 * All stats counters are 64bit unsigned values.
621	 *
622	 * Siena-compatible MAC stats contain MC_CMD_MAC_NSTATS 64bit counters.
623	 * The generation end counter is at index MC_CMD_MAC_GENERATION_END
624	 * (same as MC_CMD_MAC_NSTATS-1).
625	 *
626	 * Medford2 and later use a larger DMA buffer: MAC_STATS_NUM_STATS from
627	 * MC_CMD_GET_CAPABILITIES_V4_OUT reports the number of 64bit counters.
628	 *
629	 * Firmware writes the generation end counter as the last counter in the
630	 * DMA buffer. Do not use MC_CMD_MAC_GENERATION_END, as that is only
631	 * correct for legacy Siena-compatible MAC stats.
632	 */
633
634	if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS) {
635		/* MAC stats count too small for legacy MAC stats */
636		rc = ENOSPC;
637		goto fail1;
638	}
639	if (EFSYS_MEM_SIZE(esmp) <
640	    (encp->enc_mac_stats_nstats * sizeof (efx_qword_t))) {
641		/* DMA buffer too small */
642		rc = ENOSPC;
643		goto fail2;
644	}
645
646	/* Read END first so we don't race with the MC */
647	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFSYS_MEM_SIZE(esmp));
648	EF10_MAC_STAT_READ(esmp, (encp->enc_mac_stats_nstats - 1),
649	    &generation_end);
650	EFSYS_MEM_READ_BARRIER();
651
652	/* TX */
653	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PKTS, &value);
654	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
655
656	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_CONTROL_PKTS, &value);
657	EFSYS_STAT_SUBR_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
658
659	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PAUSE_PKTS, &value);
660	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PAUSE_PKTS]), &value);
661
662	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_UNICAST_PKTS, &value);
663	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_UNICST_PKTS]), &value);
664
665	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTICAST_PKTS, &value);
666	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULTICST_PKTS]), &value);
667
668	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BROADCAST_PKTS, &value);
669	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_BRDCST_PKTS]), &value);
670
671	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BYTES, &value);
672	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_OCTETS]), &value);
673
674	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LT64_PKTS, &value);
675	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
676	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_64_PKTS, &value);
677	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
678
679	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_65_TO_127_PKTS, &value);
680	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_65_TO_127_PKTS]), &value);
681
682	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_128_TO_255_PKTS, &value);
683	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_128_TO_255_PKTS]), &value);
684
685	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_256_TO_511_PKTS, &value);
686	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_256_TO_511_PKTS]), &value);
687
688	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_512_TO_1023_PKTS, &value);
689	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_512_TO_1023_PKTS]), &value);
690
691	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_1024_TO_15XX_PKTS, &value);
692	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_1024_TO_15XX_PKTS]), &value);
693
694	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_15XX_TO_JUMBO_PKTS, &value);
695	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
696	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_GTJUMBO_PKTS, &value);
697	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
698
699	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BAD_FCS_PKTS, &value);
700	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_ERRORS]), &value);
701
702	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_SINGLE_COLLISION_PKTS, &value);
703	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_SGL_COL_PKTS]), &value);
704
705	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTIPLE_COLLISION_PKTS,
706			    &value);
707	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULT_COL_PKTS]), &value);
708
709	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_COLLISION_PKTS,
710			    &value);
711	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_COL_PKTS]), &value);
712
713	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LATE_COLLISION_PKTS, &value);
714	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LATE_COL_PKTS]), &value);
715
716	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_DEFERRED_PKTS, &value);
717	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_DEF_PKTS]), &value);
718
719	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_DEFERRED_PKTS,
720	    &value);
721	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_DEF_PKTS]), &value);
722
723	/* RX */
724	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BYTES, &value);
725	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_OCTETS]), &value);
726
727	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PKTS, &value);
728	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PKTS]), &value);
729
730	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNICAST_PKTS, &value);
731	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_UNICST_PKTS]), &value);
732
733	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MULTICAST_PKTS, &value);
734	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MULTICST_PKTS]), &value);
735
736	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BROADCAST_PKTS, &value);
737	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_BRDCST_PKTS]), &value);
738
739	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PAUSE_PKTS, &value);
740	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PAUSE_PKTS]), &value);
741
742	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNDERSIZE_PKTS, &value);
743	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
744	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_64_PKTS, &value);
745	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
746
747	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_65_TO_127_PKTS, &value);
748	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_65_TO_127_PKTS]), &value);
749
750	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_128_TO_255_PKTS, &value);
751	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_128_TO_255_PKTS]), &value);
752
753	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_256_TO_511_PKTS, &value);
754	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_256_TO_511_PKTS]), &value);
755
756	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_512_TO_1023_PKTS, &value);
757	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_512_TO_1023_PKTS]), &value);
758
759	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_1024_TO_15XX_PKTS, &value);
760	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_1024_TO_15XX_PKTS]), &value);
761
762	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_15XX_TO_JUMBO_PKTS, &value);
763	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
764	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_GTJUMBO_PKTS, &value);
765	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
766
767	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BAD_FCS_PKTS, &value);
768	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FCS_ERRORS]), &value);
769
770	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_OVERFLOW_PKTS, &value);
771	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_DROP_EVENTS]), &value);
772
773	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_FALSE_CARRIER_PKTS, &value);
774	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FALSE_CARRIER_ERRORS]), &value);
775
776	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_SYMBOL_ERROR_PKTS, &value);
777	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_SYMBOL_ERRORS]), &value);
778
779	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_ALIGN_ERROR_PKTS, &value);
780	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_ALIGN_ERRORS]), &value);
781
782	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_INTERNAL_ERROR_PKTS, &value);
783	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_INTERNAL_ERRORS]), &value);
784
785	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_JABBER_PKTS, &value);
786	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_JABBER_PKTS]), &value);
787
788	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_CHAR_ERR, &value);
789	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_CHAR_ERR]),
790			    &(value.eq_dword[0]));
791	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_CHAR_ERR]),
792			    &(value.eq_dword[1]));
793
794	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_CHAR_ERR, &value);
795	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_CHAR_ERR]),
796			    &(value.eq_dword[0]));
797	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_CHAR_ERR]),
798			    &(value.eq_dword[1]));
799
800	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_DISP_ERR, &value);
801	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_DISP_ERR]),
802			    &(value.eq_dword[0]));
803	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_DISP_ERR]),
804			    &(value.eq_dword[1]));
805
806	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_DISP_ERR, &value);
807	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_DISP_ERR]),
808			    &(value.eq_dword[0]));
809	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_DISP_ERR]),
810			    &(value.eq_dword[1]));
811
812	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MATCH_FAULT, &value);
813	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MATCH_FAULT]), &value);
814
815	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_NODESC_DROPS, &value);
816	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_NODESC_DROP_CNT]), &value);
817
818	/* Packet memory (EF10 only) */
819	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_TRUNC_BB_OVERFLOW, &value);
820	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_TRUNC_BB_OVERFLOW]), &value);
821
822	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_DISCARD_BB_OVERFLOW, &value);
823	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_DISCARD_BB_OVERFLOW]), &value);
824
825	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_TRUNC_VFIFO_FULL, &value);
826	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_TRUNC_VFIFO_FULL]), &value);
827
828	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_DISCARD_VFIFO_FULL, &value);
829	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_DISCARD_VFIFO_FULL]), &value);
830
831	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_TRUNC_QBB, &value);
832	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_TRUNC_QBB]), &value);
833
834	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_DISCARD_QBB, &value);
835	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_DISCARD_QBB]), &value);
836
837	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_PM_DISCARD_MAPPING, &value);
838	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_PM_DISCARD_MAPPING]), &value);
839
840	/* RX datapath */
841	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_Q_DISABLED_PKTS, &value);
842	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_Q_DISABLED_PKTS]), &value);
843
844	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_DI_DROPPED_PKTS, &value);
845	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_DI_DROPPED_PKTS]), &value);
846
847	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_STREAMING_PKTS, &value);
848	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_STREAMING_PKTS]), &value);
849
850	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_HLB_FETCH_CONDITIONS, &value);
851	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_HLB_FETCH]), &value);
852
853	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_HLB_WAIT_CONDITIONS, &value);
854	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_HLB_WAIT]), &value);
855
856	/* VADAPTER RX */
857	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_UNICAST_PACKETS,
858	    &value);
859	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS]),
860	    &value);
861
862	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_UNICAST_BYTES,
863	    &value);
864	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_UNICAST_BYTES]),
865	    &value);
866
867	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_MULTICAST_PACKETS,
868	    &value);
869	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS]),
870	    &value);
871
872	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_MULTICAST_BYTES,
873	    &value);
874	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES]),
875	    &value);
876
877	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_BROADCAST_PACKETS,
878	    &value);
879	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS]),
880	    &value);
881
882	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_BROADCAST_BYTES,
883	    &value);
884	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES]),
885	    &value);
886
887	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_BAD_PACKETS,
888	    &value);
889	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_BAD_PACKETS]),
890	    &value);
891
892	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_BAD_BYTES, &value);
893	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_BAD_BYTES]), &value);
894
895	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_RX_OVERFLOW, &value);
896	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_RX_OVERFLOW]), &value);
897
898	/* VADAPTER TX */
899	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_UNICAST_PACKETS,
900	    &value);
901	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS]),
902	    &value);
903
904	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_UNICAST_BYTES,
905	    &value);
906	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_UNICAST_BYTES]),
907	    &value);
908
909	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_MULTICAST_PACKETS,
910	    &value);
911	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS]),
912	    &value);
913
914	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_MULTICAST_BYTES,
915	    &value);
916	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES]),
917	    &value);
918
919	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_BROADCAST_PACKETS,
920	    &value);
921	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS]),
922	    &value);
923
924	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_BROADCAST_BYTES,
925	    &value);
926	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES]),
927	    &value);
928
929	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_BAD_PACKETS, &value);
930	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_BAD_PACKETS]), &value);
931
932	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_BAD_BYTES, &value);
933	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_BAD_BYTES]), &value);
934
935	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_VADAPTER_TX_OVERFLOW, &value);
936	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_VADAPTER_TX_OVERFLOW]), &value);
937
938	if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS_V2)
939		goto done;
940
941	/* FEC */
942	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_UNCORRECTED_ERRORS, &value);
943	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_UNCORRECTED_ERRORS]), &value);
944
945	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_CORRECTED_ERRORS, &value);
946	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_CORRECTED_ERRORS]), &value);
947
948	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_CORRECTED_SYMBOLS_LANE0,
949	    &value);
950	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_CORRECTED_SYMBOLS_LANE0]),
951	    &value);
952
953	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_CORRECTED_SYMBOLS_LANE1,
954	    &value);
955	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_CORRECTED_SYMBOLS_LANE1]),
956	    &value);
957
958	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_CORRECTED_SYMBOLS_LANE2,
959	    &value);
960	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_CORRECTED_SYMBOLS_LANE2]),
961	    &value);
962
963	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_FEC_CORRECTED_SYMBOLS_LANE3,
964	    &value);
965	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_FEC_CORRECTED_SYMBOLS_LANE3]),
966	    &value);
967
968	if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS_V3)
969		goto done;
970
971	/* CTPIO exceptions */
972	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_VI_BUSY_FALLBACK, &value);
973	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_VI_BUSY_FALLBACK]), &value);
974
975	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_LONG_WRITE_SUCCESS, &value);
976	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_LONG_WRITE_SUCCESS]), &value);
977
978	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_MISSING_DBELL_FAIL, &value);
979	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_MISSING_DBELL_FAIL]), &value);
980
981	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_OVERFLOW_FAIL, &value);
982	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_OVERFLOW_FAIL]), &value);
983
984	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_UNDERFLOW_FAIL, &value);
985	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_UNDERFLOW_FAIL]), &value);
986
987	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_TIMEOUT_FAIL, &value);
988	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_TIMEOUT_FAIL]), &value);
989
990	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_NONCONTIG_WR_FAIL, &value);
991	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_NONCONTIG_WR_FAIL]), &value);
992
993	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_FRM_CLOBBER_FAIL, &value);
994	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_FRM_CLOBBER_FAIL]), &value);
995
996	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_INVALID_WR_FAIL, &value);
997	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_INVALID_WR_FAIL]), &value);
998
999	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_VI_CLOBBER_FALLBACK, &value);
1000	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_VI_CLOBBER_FALLBACK]),
1001	    &value);
1002
1003	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_UNQUALIFIED_FALLBACK, &value);
1004	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_UNQUALIFIED_FALLBACK]),
1005	    &value);
1006
1007	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_RUNT_FALLBACK, &value);
1008	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_RUNT_FALLBACK]), &value);
1009
1010	/* CTPIO per-port stats */
1011	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_SUCCESS, &value);
1012	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_SUCCESS]), &value);
1013
1014	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_FALLBACK, &value);
1015	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_FALLBACK]), &value);
1016
1017	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_POISON, &value);
1018	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_POISON]), &value);
1019
1020	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_CTPIO_ERASE, &value);
1021	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_CTPIO_ERASE]), &value);
1022
1023	if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS_V4)
1024		goto done;
1025
1026	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_SCATTER_DISABLED_TRUNC,
1027	    &value);
1028	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_SCATTER_DISABLED_TRUNC]),
1029	    &value);
1030
1031	/* Head-of-line blocking */
1032	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_HLB_IDLE, &value);
1033	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_HLB_IDLE]), &value);
1034
1035	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_RXDP_HLB_TIMEOUT, &value);
1036	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RXDP_HLB_TIMEOUT]), &value);
1037
1038done:
1039	/* Read START generation counter */
1040	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFSYS_MEM_SIZE(esmp));
1041	EFSYS_MEM_READ_BARRIER();
1042	EF10_MAC_STAT_READ(esmp, MC_CMD_MAC_GENERATION_START,
1043			    &generation_start);
1044
1045	/* Check that we didn't read the stats in the middle of a DMA */
1046	/* Not a good enough check ? */
1047	if (memcmp(&generation_start, &generation_end,
1048	    sizeof (generation_start)))
1049		return (EAGAIN);
1050
1051	if (generationp)
1052		*generationp = EFX_QWORD_FIELD(generation_start, EFX_DWORD_0);
1053
1054	return (0);
1055
1056fail2:
1057	EFSYS_PROBE(fail2);
1058fail1:
1059	EFSYS_PROBE1(fail1, efx_rc_t, rc);
1060
1061	return (rc);
1062}
1063
1064#endif	/* EFSYS_OPT_MAC_STATS */
1065
1066#endif	/* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
1067