xref: /freebsd/sys/dev/sfxge/common/siena_mac.c (revision 06c3fb27)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2009-2016 Solarflare Communications Inc.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright notice,
11  *    this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright notice,
13  *    this list of conditions and the following disclaimer in the documentation
14  *    and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
26  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * The views and conclusions contained in the software and documentation are
29  * those of the authors and should not be interpreted as representing official
30  * policies, either expressed or implied, of the FreeBSD Project.
31  */
32 
33 #include <sys/cdefs.h>
34 #include "efx.h"
35 #include "efx_impl.h"
36 
37 #if EFSYS_OPT_SIENA
38 
39 	__checkReturn	efx_rc_t
40 siena_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 	siena_link_state_t sls;
46 	efx_rc_t rc;
47 
48 	if ((rc = siena_phy_get_link(enp, &sls)) != 0)
49 		goto fail1;
50 
51 	epp->ep_adv_cap_mask = sls.sls_adv_cap_mask;
52 	epp->ep_fcntl = sls.sls_fcntl;
53 
54 	*link_modep = sls.sls_link_mode;
55 
56 	return (0);
57 
58 fail1:
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
67 siena_mac_up(
68 	__in		efx_nic_t *enp,
69 	__out		boolean_t *mac_upp)
70 {
71 	siena_link_state_t sls;
72 	efx_rc_t rc;
73 
74 	/*
75 	 * Because Siena doesn't *require* polling, we can't rely on
76 	 * siena_mac_poll() being executed to populate epp->ep_mac_up.
77 	 */
78 	if ((rc = siena_phy_get_link(enp, &sls)) != 0)
79 		goto fail1;
80 
81 	*mac_upp = sls.sls_mac_up;
82 
83 	return (0);
84 
85 fail1:
86 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
87 
88 	return (rc);
89 }
90 
91 	__checkReturn	efx_rc_t
92 siena_mac_reconfigure(
93 	__in		efx_nic_t *enp)
94 {
95 	efx_port_t *epp = &(enp->en_port);
96 	efx_oword_t multicast_hash[2];
97 	efx_mcdi_req_t req;
98 	EFX_MCDI_DECLARE_BUF(payload,
99 		MAX(MC_CMD_SET_MAC_IN_LEN, MC_CMD_SET_MCAST_HASH_IN_LEN),
100 		MAX(MC_CMD_SET_MAC_OUT_LEN, MC_CMD_SET_MCAST_HASH_OUT_LEN));
101 
102 	unsigned int fcntl;
103 	efx_rc_t rc;
104 
105 	req.emr_cmd = MC_CMD_SET_MAC;
106 	req.emr_in_buf = payload;
107 	req.emr_in_length = MC_CMD_SET_MAC_IN_LEN;
108 	req.emr_out_buf = payload;
109 	req.emr_out_length = MC_CMD_SET_MAC_OUT_LEN;
110 
111 	MCDI_IN_SET_DWORD(req, SET_MAC_IN_MTU, epp->ep_mac_pdu);
112 	MCDI_IN_SET_DWORD(req, SET_MAC_IN_DRAIN, epp->ep_mac_drain ? 1 : 0);
113 	EFX_MAC_ADDR_COPY(MCDI_IN2(req, uint8_t, SET_MAC_IN_ADDR),
114 			    epp->ep_mac_addr);
115 	MCDI_IN_POPULATE_DWORD_2(req, SET_MAC_IN_REJECT,
116 			    SET_MAC_IN_REJECT_UNCST, !epp->ep_all_unicst,
117 			    SET_MAC_IN_REJECT_BRDCST, !epp->ep_brdcst);
118 
119 	if (epp->ep_fcntl_autoneg)
120 		/* efx_fcntl_set() has already set the phy capabilities */
121 		fcntl = MC_CMD_FCNTL_AUTO;
122 	else if (epp->ep_fcntl & EFX_FCNTL_RESPOND)
123 		fcntl = (epp->ep_fcntl & EFX_FCNTL_GENERATE)
124 			? MC_CMD_FCNTL_BIDIR
125 			: MC_CMD_FCNTL_RESPOND;
126 	else
127 		fcntl = MC_CMD_FCNTL_OFF;
128 
129 	MCDI_IN_SET_DWORD(req, SET_MAC_IN_FCNTL, fcntl);
130 
131 	efx_mcdi_execute(enp, &req);
132 
133 	if (req.emr_rc != 0) {
134 		rc = req.emr_rc;
135 		goto fail1;
136 	}
137 
138 	/* Push multicast hash */
139 
140 	if (epp->ep_all_mulcst) {
141 		/* A hash matching all multicast is all 1s */
142 		EFX_SET_OWORD(multicast_hash[0]);
143 		EFX_SET_OWORD(multicast_hash[1]);
144 	} else if (epp->ep_mulcst) {
145 		/* Use the hash set by the multicast list */
146 		multicast_hash[0] = epp->ep_multicst_hash[0];
147 		multicast_hash[1] = epp->ep_multicst_hash[1];
148 	} else {
149 		/* A hash matching no traffic is simply 0 */
150 		EFX_ZERO_OWORD(multicast_hash[0]);
151 		EFX_ZERO_OWORD(multicast_hash[1]);
152 	}
153 
154 	/*
155 	 * Broadcast packets go through the multicast hash filter.
156 	 * The IEEE 802.3 CRC32 of the broadcast address is 0xbe2612ff
157 	 * so we always add bit 0xff to the mask (bit 0x7f in the
158 	 * second octword).
159 	 */
160 	if (epp->ep_brdcst) {
161 		/*
162 		 * NOTE: due to constant folding, some of this evaluates
163 		 * to null expressions, giving E_EXPR_NULL_EFFECT during
164 		 * lint on Illumos.  No good way to fix this without
165 		 * explicit coding the individual word/bit setting.
166 		 * So just suppress lint for this one line.
167 		 */
168 		/* LINTED */
169 		EFX_SET_OWORD_BIT(multicast_hash[1], 0x7f);
170 	}
171 
172 	(void) memset(payload, 0, sizeof (payload));
173 	req.emr_cmd = MC_CMD_SET_MCAST_HASH;
174 	req.emr_in_buf = payload;
175 	req.emr_in_length = MC_CMD_SET_MCAST_HASH_IN_LEN;
176 	req.emr_out_buf = payload;
177 	req.emr_out_length = MC_CMD_SET_MCAST_HASH_OUT_LEN;
178 
179 	memcpy(MCDI_IN2(req, uint8_t, SET_MCAST_HASH_IN_HASH0),
180 	    multicast_hash, sizeof (multicast_hash));
181 
182 	efx_mcdi_execute(enp, &req);
183 
184 	if (req.emr_rc != 0) {
185 		rc = req.emr_rc;
186 		goto fail2;
187 	}
188 
189 	return (0);
190 
191 fail2:
192 	EFSYS_PROBE(fail2);
193 fail1:
194 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
195 
196 	return (rc);
197 }
198 
199 #if EFSYS_OPT_LOOPBACK
200 
201 	__checkReturn	efx_rc_t
202 siena_mac_loopback_set(
203 	__in		efx_nic_t *enp,
204 	__in		efx_link_mode_t link_mode,
205 	__in		efx_loopback_type_t loopback_type)
206 {
207 	efx_port_t *epp = &(enp->en_port);
208 	const efx_phy_ops_t *epop = epp->ep_epop;
209 	efx_loopback_type_t old_loopback_type;
210 	efx_link_mode_t old_loopback_link_mode;
211 	efx_rc_t rc;
212 
213 	/* The PHY object handles this on Siena */
214 	old_loopback_type = epp->ep_loopback_type;
215 	old_loopback_link_mode = epp->ep_loopback_link_mode;
216 	epp->ep_loopback_type = loopback_type;
217 	epp->ep_loopback_link_mode = link_mode;
218 
219 	if ((rc = epop->epo_reconfigure(enp)) != 0)
220 		goto fail1;
221 
222 	return (0);
223 
224 fail1:
225 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
226 
227 	epp->ep_loopback_type = old_loopback_type;
228 	epp->ep_loopback_link_mode = old_loopback_link_mode;
229 
230 	return (rc);
231 }
232 
233 #endif	/* EFSYS_OPT_LOOPBACK */
234 
235 #if EFSYS_OPT_MAC_STATS
236 
237 	__checkReturn			efx_rc_t
238 siena_mac_stats_get_mask(
239 	__in				efx_nic_t *enp,
240 	__inout_bcount(mask_size)	uint32_t *maskp,
241 	__in				size_t mask_size)
242 {
243 	const struct efx_mac_stats_range siena_stats[] = {
244 		{ EFX_MAC_RX_OCTETS, EFX_MAC_RX_GE_15XX_PKTS },
245 		/* EFX_MAC_RX_ERRORS is not supported */
246 		{ EFX_MAC_RX_FCS_ERRORS, EFX_MAC_TX_EX_DEF_PKTS },
247 	};
248 	efx_rc_t rc;
249 
250 	_NOTE(ARGUNUSED(enp))
251 
252 	if ((rc = efx_mac_stats_mask_add_ranges(maskp, mask_size,
253 	    siena_stats, EFX_ARRAY_SIZE(siena_stats))) != 0)
254 		goto fail1;
255 
256 	return (0);
257 
258 fail1:
259 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
260 
261 	return (rc);
262 }
263 
264 #define	SIENA_MAC_STAT_READ(_esmp, _field, _eqp)			\
265 	EFSYS_MEM_READQ((_esmp), (_field) * sizeof (efx_qword_t), _eqp)
266 
267 	__checkReturn			efx_rc_t
268 siena_mac_stats_update(
269 	__in				efx_nic_t *enp,
270 	__in				efsys_mem_t *esmp,
271 	__inout_ecount(EFX_MAC_NSTATS)	efsys_stat_t *stat,
272 	__inout_opt			uint32_t *generationp)
273 {
274 	const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
275 	efx_qword_t generation_start;
276 	efx_qword_t generation_end;
277 	efx_qword_t value;
278 	efx_rc_t rc;
279 
280 	if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS) {
281 		/* MAC stats count too small */
282 		rc = ENOSPC;
283 		goto fail1;
284 	}
285 	if (EFSYS_MEM_SIZE(esmp) <
286 	    (encp->enc_mac_stats_nstats * sizeof (efx_qword_t))) {
287 		/* DMA buffer too small */
288 		rc = ENOSPC;
289 		goto fail2;
290 	}
291 
292 	/* Read END first so we don't race with the MC */
293 	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFSYS_MEM_SIZE(esmp));
294 	SIENA_MAC_STAT_READ(esmp, (encp->enc_mac_stats_nstats - 1),
295 	    &generation_end);
296 	EFSYS_MEM_READ_BARRIER();
297 
298 	/* TX */
299 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PKTS, &value);
300 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
301 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_CONTROL_PKTS, &value);
302 	EFSYS_STAT_SUBR_QWORD(&(stat[EFX_MAC_TX_PKTS]), &value);
303 
304 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_PAUSE_PKTS, &value);
305 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_PAUSE_PKTS]), &value);
306 
307 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_UNICAST_PKTS, &value);
308 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_UNICST_PKTS]), &value);
309 
310 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTICAST_PKTS, &value);
311 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULTICST_PKTS]), &value);
312 
313 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BROADCAST_PKTS, &value);
314 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_BRDCST_PKTS]), &value);
315 
316 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BYTES, &value);
317 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_OCTETS]), &value);
318 
319 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LT64_PKTS, &value);
320 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
321 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_64_PKTS, &value);
322 	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_LE_64_PKTS]), &value);
323 
324 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_65_TO_127_PKTS, &value);
325 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_65_TO_127_PKTS]), &value);
326 
327 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_128_TO_255_PKTS, &value);
328 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_128_TO_255_PKTS]), &value);
329 
330 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_256_TO_511_PKTS, &value);
331 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_256_TO_511_PKTS]), &value);
332 
333 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_512_TO_1023_PKTS, &value);
334 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_512_TO_1023_PKTS]), &value);
335 
336 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_1024_TO_15XX_PKTS, &value);
337 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_1024_TO_15XX_PKTS]), &value);
338 
339 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_15XX_TO_JUMBO_PKTS, &value);
340 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
341 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_GTJUMBO_PKTS, &value);
342 	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_TX_GE_15XX_PKTS]), &value);
343 
344 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_BAD_FCS_PKTS, &value);
345 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_ERRORS]), &value);
346 
347 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_SINGLE_COLLISION_PKTS, &value);
348 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_SGL_COL_PKTS]), &value);
349 
350 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_MULTIPLE_COLLISION_PKTS,
351 			    &value);
352 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_MULT_COL_PKTS]), &value);
353 
354 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_COLLISION_PKTS,
355 			    &value);
356 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_COL_PKTS]), &value);
357 
358 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_LATE_COLLISION_PKTS, &value);
359 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_LATE_COL_PKTS]), &value);
360 
361 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_DEFERRED_PKTS, &value);
362 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_DEF_PKTS]), &value);
363 
364 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_TX_EXCESSIVE_DEFERRED_PKTS,
365 	    &value);
366 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_TX_EX_DEF_PKTS]), &value);
367 
368 	/* RX */
369 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BYTES, &value);
370 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_OCTETS]), &value);
371 
372 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PKTS, &value);
373 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PKTS]), &value);
374 
375 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNICAST_PKTS, &value);
376 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_UNICST_PKTS]), &value);
377 
378 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MULTICAST_PKTS, &value);
379 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MULTICST_PKTS]), &value);
380 
381 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BROADCAST_PKTS, &value);
382 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_BRDCST_PKTS]), &value);
383 
384 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_PAUSE_PKTS, &value);
385 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_PAUSE_PKTS]), &value);
386 
387 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_UNDERSIZE_PKTS, &value);
388 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
389 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_64_PKTS, &value);
390 	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_LE_64_PKTS]), &value);
391 
392 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_65_TO_127_PKTS, &value);
393 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_65_TO_127_PKTS]), &value);
394 
395 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_128_TO_255_PKTS, &value);
396 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_128_TO_255_PKTS]), &value);
397 
398 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_256_TO_511_PKTS, &value);
399 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_256_TO_511_PKTS]), &value);
400 
401 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_512_TO_1023_PKTS, &value);
402 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_512_TO_1023_PKTS]), &value);
403 
404 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_1024_TO_15XX_PKTS, &value);
405 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_1024_TO_15XX_PKTS]), &value);
406 
407 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_15XX_TO_JUMBO_PKTS, &value);
408 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
409 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_GTJUMBO_PKTS, &value);
410 	EFSYS_STAT_INCR_QWORD(&(stat[EFX_MAC_RX_GE_15XX_PKTS]), &value);
411 
412 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_BAD_FCS_PKTS, &value);
413 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FCS_ERRORS]), &value);
414 
415 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_OVERFLOW_PKTS, &value);
416 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_DROP_EVENTS]), &value);
417 
418 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_FALSE_CARRIER_PKTS, &value);
419 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_FALSE_CARRIER_ERRORS]), &value);
420 
421 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_SYMBOL_ERROR_PKTS, &value);
422 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_SYMBOL_ERRORS]), &value);
423 
424 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_ALIGN_ERROR_PKTS, &value);
425 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_ALIGN_ERRORS]), &value);
426 
427 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_INTERNAL_ERROR_PKTS, &value);
428 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_INTERNAL_ERRORS]), &value);
429 
430 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_JABBER_PKTS, &value);
431 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_JABBER_PKTS]), &value);
432 
433 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_CHAR_ERR, &value);
434 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_CHAR_ERR]),
435 			    &(value.eq_dword[0]));
436 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_CHAR_ERR]),
437 			    &(value.eq_dword[1]));
438 
439 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_CHAR_ERR, &value);
440 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_CHAR_ERR]),
441 			    &(value.eq_dword[0]));
442 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_CHAR_ERR]),
443 			    &(value.eq_dword[1]));
444 
445 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES01_DISP_ERR, &value);
446 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE0_DISP_ERR]),
447 			    &(value.eq_dword[0]));
448 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE1_DISP_ERR]),
449 			    &(value.eq_dword[1]));
450 
451 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_LANES23_DISP_ERR, &value);
452 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE2_DISP_ERR]),
453 			    &(value.eq_dword[0]));
454 	EFSYS_STAT_SET_DWORD(&(stat[EFX_MAC_RX_LANE3_DISP_ERR]),
455 			    &(value.eq_dword[1]));
456 
457 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_MATCH_FAULT, &value);
458 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_MATCH_FAULT]), &value);
459 
460 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_RX_NODESC_DROPS, &value);
461 	EFSYS_STAT_SET_QWORD(&(stat[EFX_MAC_RX_NODESC_DROP_CNT]), &value);
462 
463 	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, EFSYS_MEM_SIZE(esmp));
464 	EFSYS_MEM_READ_BARRIER();
465 	SIENA_MAC_STAT_READ(esmp, MC_CMD_MAC_GENERATION_START,
466 			    &generation_start);
467 
468 	/* Check that we didn't read the stats in the middle of a DMA */
469 	/* Not a good enough check ? */
470 	if (memcmp(&generation_start, &generation_end,
471 	    sizeof (generation_start)))
472 		return (EAGAIN);
473 
474 	if (generationp)
475 		*generationp = EFX_QWORD_FIELD(generation_start, EFX_DWORD_0);
476 
477 	return (0);
478 
479 fail2:
480 	EFSYS_PROBE(fail2);
481 fail1:
482 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
483 
484 	return (rc);
485 }
486 
487 #endif	/* EFSYS_OPT_MAC_STATS */
488 
489 	__checkReturn		efx_rc_t
490 siena_mac_pdu_get(
491 	__in		efx_nic_t *enp,
492 	__out		size_t *pdu)
493 {
494 	return (ENOTSUP);
495 }
496 
497 #endif	/* EFSYS_OPT_SIENA */
498