xref: /freebsd/sys/dev/sfxge/common/efx_rx.c (revision 4f52dfbb)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2007-2016 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 __FBSDID("$FreeBSD$");
35 
36 #include "efx.h"
37 #include "efx_impl.h"
38 
39 
40 #if EFSYS_OPT_SIENA
41 
42 static	__checkReturn	efx_rc_t
43 siena_rx_init(
44 	__in		efx_nic_t *enp);
45 
46 static			void
47 siena_rx_fini(
48 	__in		efx_nic_t *enp);
49 
50 #if EFSYS_OPT_RX_SCATTER
51 static	__checkReturn	efx_rc_t
52 siena_rx_scatter_enable(
53 	__in		efx_nic_t *enp,
54 	__in		unsigned int buf_size);
55 #endif /* EFSYS_OPT_RX_SCATTER */
56 
57 #if EFSYS_OPT_RX_SCALE
58 static	__checkReturn	efx_rc_t
59 siena_rx_scale_mode_set(
60 	__in		efx_nic_t *enp,
61 	__in		efx_rx_hash_alg_t alg,
62 	__in		efx_rx_hash_type_t type,
63 	__in		boolean_t insert);
64 
65 static	__checkReturn	efx_rc_t
66 siena_rx_scale_key_set(
67 	__in		efx_nic_t *enp,
68 	__in_ecount(n)	uint8_t *key,
69 	__in		size_t n);
70 
71 static	__checkReturn	efx_rc_t
72 siena_rx_scale_tbl_set(
73 	__in		efx_nic_t *enp,
74 	__in_ecount(n)	unsigned int *table,
75 	__in		size_t n);
76 
77 static	__checkReturn	uint32_t
78 siena_rx_prefix_hash(
79 	__in		efx_nic_t *enp,
80 	__in		efx_rx_hash_alg_t func,
81 	__in		uint8_t *buffer);
82 
83 #endif /* EFSYS_OPT_RX_SCALE */
84 
85 static	__checkReturn	efx_rc_t
86 siena_rx_prefix_pktlen(
87 	__in		efx_nic_t *enp,
88 	__in		uint8_t *buffer,
89 	__out		uint16_t *lengthp);
90 
91 static			void
92 siena_rx_qpost(
93 	__in		efx_rxq_t *erp,
94 	__in_ecount(n)	efsys_dma_addr_t *addrp,
95 	__in		size_t size,
96 	__in		unsigned int n,
97 	__in		unsigned int completed,
98 	__in		unsigned int added);
99 
100 static			void
101 siena_rx_qpush(
102 	__in		efx_rxq_t *erp,
103 	__in		unsigned int added,
104 	__inout		unsigned int *pushedp);
105 
106 static	__checkReturn	efx_rc_t
107 siena_rx_qflush(
108 	__in		efx_rxq_t *erp);
109 
110 static			void
111 siena_rx_qenable(
112 	__in		efx_rxq_t *erp);
113 
114 static	__checkReturn	efx_rc_t
115 siena_rx_qcreate(
116 	__in		efx_nic_t *enp,
117 	__in		unsigned int index,
118 	__in		unsigned int label,
119 	__in		efx_rxq_type_t type,
120 	__in		efsys_mem_t *esmp,
121 	__in		size_t n,
122 	__in		uint32_t id,
123 	__in		efx_evq_t *eep,
124 	__in		efx_rxq_t *erp);
125 
126 static			void
127 siena_rx_qdestroy(
128 	__in		efx_rxq_t *erp);
129 
130 #endif /* EFSYS_OPT_SIENA */
131 
132 
133 #if EFSYS_OPT_SIENA
134 static const efx_rx_ops_t __efx_rx_siena_ops = {
135 	siena_rx_init,				/* erxo_init */
136 	siena_rx_fini,				/* erxo_fini */
137 #if EFSYS_OPT_RX_SCATTER
138 	siena_rx_scatter_enable,		/* erxo_scatter_enable */
139 #endif
140 #if EFSYS_OPT_RX_SCALE
141 	siena_rx_scale_mode_set,		/* erxo_scale_mode_set */
142 	siena_rx_scale_key_set,			/* erxo_scale_key_set */
143 	siena_rx_scale_tbl_set,			/* erxo_scale_tbl_set */
144 	siena_rx_prefix_hash,			/* erxo_prefix_hash */
145 #endif
146 	siena_rx_prefix_pktlen,			/* erxo_prefix_pktlen */
147 	siena_rx_qpost,				/* erxo_qpost */
148 	siena_rx_qpush,				/* erxo_qpush */
149 	siena_rx_qflush,			/* erxo_qflush */
150 	siena_rx_qenable,			/* erxo_qenable */
151 	siena_rx_qcreate,			/* erxo_qcreate */
152 	siena_rx_qdestroy,			/* erxo_qdestroy */
153 };
154 #endif	/* EFSYS_OPT_SIENA */
155 
156 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
157 static const efx_rx_ops_t __efx_rx_ef10_ops = {
158 	ef10_rx_init,				/* erxo_init */
159 	ef10_rx_fini,				/* erxo_fini */
160 #if EFSYS_OPT_RX_SCATTER
161 	ef10_rx_scatter_enable,			/* erxo_scatter_enable */
162 #endif
163 #if EFSYS_OPT_RX_SCALE
164 	ef10_rx_scale_mode_set,			/* erxo_scale_mode_set */
165 	ef10_rx_scale_key_set,			/* erxo_scale_key_set */
166 	ef10_rx_scale_tbl_set,			/* erxo_scale_tbl_set */
167 	ef10_rx_prefix_hash,			/* erxo_prefix_hash */
168 #endif
169 	ef10_rx_prefix_pktlen,			/* erxo_prefix_pktlen */
170 	ef10_rx_qpost,				/* erxo_qpost */
171 	ef10_rx_qpush,				/* erxo_qpush */
172 	ef10_rx_qflush,				/* erxo_qflush */
173 	ef10_rx_qenable,			/* erxo_qenable */
174 	ef10_rx_qcreate,			/* erxo_qcreate */
175 	ef10_rx_qdestroy,			/* erxo_qdestroy */
176 };
177 #endif	/* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
178 
179 
180 	__checkReturn	efx_rc_t
181 efx_rx_init(
182 	__inout		efx_nic_t *enp)
183 {
184 	const efx_rx_ops_t *erxop;
185 	efx_rc_t rc;
186 
187 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
188 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
189 
190 	if (!(enp->en_mod_flags & EFX_MOD_EV)) {
191 		rc = EINVAL;
192 		goto fail1;
193 	}
194 
195 	if (enp->en_mod_flags & EFX_MOD_RX) {
196 		rc = EINVAL;
197 		goto fail2;
198 	}
199 
200 	switch (enp->en_family) {
201 #if EFSYS_OPT_SIENA
202 	case EFX_FAMILY_SIENA:
203 		erxop = &__efx_rx_siena_ops;
204 		break;
205 #endif /* EFSYS_OPT_SIENA */
206 
207 #if EFSYS_OPT_HUNTINGTON
208 	case EFX_FAMILY_HUNTINGTON:
209 		erxop = &__efx_rx_ef10_ops;
210 		break;
211 #endif /* EFSYS_OPT_HUNTINGTON */
212 
213 #if EFSYS_OPT_MEDFORD
214 	case EFX_FAMILY_MEDFORD:
215 		erxop = &__efx_rx_ef10_ops;
216 		break;
217 #endif /* EFSYS_OPT_MEDFORD */
218 
219 	default:
220 		EFSYS_ASSERT(0);
221 		rc = ENOTSUP;
222 		goto fail3;
223 	}
224 
225 	if ((rc = erxop->erxo_init(enp)) != 0)
226 		goto fail4;
227 
228 	enp->en_erxop = erxop;
229 	enp->en_mod_flags |= EFX_MOD_RX;
230 	return (0);
231 
232 fail4:
233 	EFSYS_PROBE(fail4);
234 fail3:
235 	EFSYS_PROBE(fail3);
236 fail2:
237 	EFSYS_PROBE(fail2);
238 fail1:
239 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
240 
241 	enp->en_erxop = NULL;
242 	enp->en_mod_flags &= ~EFX_MOD_RX;
243 	return (rc);
244 }
245 
246 			void
247 efx_rx_fini(
248 	__in		efx_nic_t *enp)
249 {
250 	const efx_rx_ops_t *erxop = enp->en_erxop;
251 
252 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
253 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
254 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
255 	EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0);
256 
257 	erxop->erxo_fini(enp);
258 
259 	enp->en_erxop = NULL;
260 	enp->en_mod_flags &= ~EFX_MOD_RX;
261 }
262 
263 #if EFSYS_OPT_RX_SCATTER
264 	__checkReturn	efx_rc_t
265 efx_rx_scatter_enable(
266 	__in		efx_nic_t *enp,
267 	__in		unsigned int buf_size)
268 {
269 	const efx_rx_ops_t *erxop = enp->en_erxop;
270 	efx_rc_t rc;
271 
272 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
273 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
274 
275 	if ((rc = erxop->erxo_scatter_enable(enp, buf_size)) != 0)
276 		goto fail1;
277 
278 	return (0);
279 
280 fail1:
281 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
282 	return (rc);
283 }
284 #endif	/* EFSYS_OPT_RX_SCATTER */
285 
286 #if EFSYS_OPT_RX_SCALE
287 	__checkReturn	efx_rc_t
288 efx_rx_hash_support_get(
289 	__in		efx_nic_t *enp,
290 	__out		efx_rx_hash_support_t *supportp)
291 {
292 	efx_rc_t rc;
293 
294 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
295 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
296 
297 	if (supportp == NULL) {
298 		rc = EINVAL;
299 		goto fail1;
300 	}
301 
302 	/* Report if resources are available to insert RX hash value */
303 	*supportp = enp->en_hash_support;
304 
305 	return (0);
306 
307 fail1:
308 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
309 
310 	return (rc);
311 }
312 
313 	__checkReturn	efx_rc_t
314 efx_rx_scale_support_get(
315 	__in		efx_nic_t *enp,
316 	__out		efx_rx_scale_support_t *supportp)
317 {
318 	efx_rc_t rc;
319 
320 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
321 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
322 
323 	if (supportp == NULL) {
324 		rc = EINVAL;
325 		goto fail1;
326 	}
327 
328 	/* Report if resources are available to support RSS */
329 	*supportp = enp->en_rss_support;
330 
331 	return (0);
332 
333 fail1:
334 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
335 
336 	return (rc);
337 }
338 
339 	__checkReturn	efx_rc_t
340 efx_rx_scale_mode_set(
341 	__in		efx_nic_t *enp,
342 	__in		efx_rx_hash_alg_t alg,
343 	__in		efx_rx_hash_type_t type,
344 	__in		boolean_t insert)
345 {
346 	const efx_rx_ops_t *erxop = enp->en_erxop;
347 	efx_rc_t rc;
348 
349 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
350 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
351 
352 	if (erxop->erxo_scale_mode_set != NULL) {
353 		if ((rc = erxop->erxo_scale_mode_set(enp, alg,
354 			    type, insert)) != 0)
355 			goto fail1;
356 	}
357 
358 	return (0);
359 
360 fail1:
361 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
362 	return (rc);
363 }
364 #endif	/* EFSYS_OPT_RX_SCALE */
365 
366 #if EFSYS_OPT_RX_SCALE
367 	__checkReturn	efx_rc_t
368 efx_rx_scale_key_set(
369 	__in		efx_nic_t *enp,
370 	__in_ecount(n)	uint8_t *key,
371 	__in		size_t n)
372 {
373 	const efx_rx_ops_t *erxop = enp->en_erxop;
374 	efx_rc_t rc;
375 
376 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
377 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
378 
379 	if ((rc = erxop->erxo_scale_key_set(enp, key, n)) != 0)
380 		goto fail1;
381 
382 	return (0);
383 
384 fail1:
385 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
386 
387 	return (rc);
388 }
389 #endif	/* EFSYS_OPT_RX_SCALE */
390 
391 #if EFSYS_OPT_RX_SCALE
392 	__checkReturn	efx_rc_t
393 efx_rx_scale_tbl_set(
394 	__in		efx_nic_t *enp,
395 	__in_ecount(n)	unsigned int *table,
396 	__in		size_t n)
397 {
398 	const efx_rx_ops_t *erxop = enp->en_erxop;
399 	efx_rc_t rc;
400 
401 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
402 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
403 
404 	if ((rc = erxop->erxo_scale_tbl_set(enp, table, n)) != 0)
405 		goto fail1;
406 
407 	return (0);
408 
409 fail1:
410 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
411 
412 	return (rc);
413 }
414 #endif	/* EFSYS_OPT_RX_SCALE */
415 
416 			void
417 efx_rx_qpost(
418 	__in		efx_rxq_t *erp,
419 	__in_ecount(n)	efsys_dma_addr_t *addrp,
420 	__in		size_t size,
421 	__in		unsigned int n,
422 	__in		unsigned int completed,
423 	__in		unsigned int added)
424 {
425 	efx_nic_t *enp = erp->er_enp;
426 	const efx_rx_ops_t *erxop = enp->en_erxop;
427 
428 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
429 
430 	erxop->erxo_qpost(erp, addrp, size, n, completed, added);
431 }
432 
433 			void
434 efx_rx_qpush(
435 	__in		efx_rxq_t *erp,
436 	__in		unsigned int added,
437 	__inout		unsigned int *pushedp)
438 {
439 	efx_nic_t *enp = erp->er_enp;
440 	const efx_rx_ops_t *erxop = enp->en_erxop;
441 
442 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
443 
444 	erxop->erxo_qpush(erp, added, pushedp);
445 }
446 
447 	__checkReturn	efx_rc_t
448 efx_rx_qflush(
449 	__in		efx_rxq_t *erp)
450 {
451 	efx_nic_t *enp = erp->er_enp;
452 	const efx_rx_ops_t *erxop = enp->en_erxop;
453 	efx_rc_t rc;
454 
455 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
456 
457 	if ((rc = erxop->erxo_qflush(erp)) != 0)
458 		goto fail1;
459 
460 	return (0);
461 
462 fail1:
463 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
464 
465 	return (rc);
466 }
467 
468 			void
469 efx_rx_qenable(
470 	__in		efx_rxq_t *erp)
471 {
472 	efx_nic_t *enp = erp->er_enp;
473 	const efx_rx_ops_t *erxop = enp->en_erxop;
474 
475 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
476 
477 	erxop->erxo_qenable(erp);
478 }
479 
480 	__checkReturn	efx_rc_t
481 efx_rx_qcreate(
482 	__in		efx_nic_t *enp,
483 	__in		unsigned int index,
484 	__in		unsigned int label,
485 	__in		efx_rxq_type_t type,
486 	__in		efsys_mem_t *esmp,
487 	__in		size_t n,
488 	__in		uint32_t id,
489 	__in		efx_evq_t *eep,
490 	__deref_out	efx_rxq_t **erpp)
491 {
492 	const efx_rx_ops_t *erxop = enp->en_erxop;
493 	efx_rxq_t *erp;
494 	efx_rc_t rc;
495 
496 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
497 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
498 
499 	/* Allocate an RXQ object */
500 	EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
501 
502 	if (erp == NULL) {
503 		rc = ENOMEM;
504 		goto fail1;
505 	}
506 
507 	erp->er_magic = EFX_RXQ_MAGIC;
508 	erp->er_enp = enp;
509 	erp->er_index = index;
510 	erp->er_mask = n - 1;
511 	erp->er_esmp = esmp;
512 
513 	if ((rc = erxop->erxo_qcreate(enp, index, label, type, esmp, n, id,
514 	    eep, erp)) != 0)
515 		goto fail2;
516 
517 	enp->en_rx_qcount++;
518 	*erpp = erp;
519 
520 	return (0);
521 
522 fail2:
523 	EFSYS_PROBE(fail2);
524 
525 	EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
526 fail1:
527 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
528 
529 	return (rc);
530 }
531 
532 			void
533 efx_rx_qdestroy(
534 	__in		efx_rxq_t *erp)
535 {
536 	efx_nic_t *enp = erp->er_enp;
537 	const efx_rx_ops_t *erxop = enp->en_erxop;
538 
539 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
540 
541 	erxop->erxo_qdestroy(erp);
542 }
543 
544 	__checkReturn	efx_rc_t
545 efx_pseudo_hdr_pkt_length_get(
546 	__in		efx_rxq_t *erp,
547 	__in		uint8_t *buffer,
548 	__out		uint16_t *lengthp)
549 {
550 	efx_nic_t *enp = erp->er_enp;
551 	const efx_rx_ops_t *erxop = enp->en_erxop;
552 
553 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
554 
555 	return (erxop->erxo_prefix_pktlen(enp, buffer, lengthp));
556 }
557 
558 #if EFSYS_OPT_RX_SCALE
559 	__checkReturn	uint32_t
560 efx_pseudo_hdr_hash_get(
561 	__in		efx_rxq_t *erp,
562 	__in		efx_rx_hash_alg_t func,
563 	__in		uint8_t *buffer)
564 {
565 	efx_nic_t *enp = erp->er_enp;
566 	const efx_rx_ops_t *erxop = enp->en_erxop;
567 
568 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
569 
570 	EFSYS_ASSERT3U(enp->en_hash_support, ==, EFX_RX_HASH_AVAILABLE);
571 	return (erxop->erxo_prefix_hash(enp, func, buffer));
572 }
573 #endif	/* EFSYS_OPT_RX_SCALE */
574 
575 #if EFSYS_OPT_SIENA
576 
577 static	__checkReturn	efx_rc_t
578 siena_rx_init(
579 	__in		efx_nic_t *enp)
580 {
581 	efx_oword_t oword;
582 	unsigned int index;
583 
584 	EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
585 
586 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
587 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
588 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
589 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
590 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
591 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
592 	EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
593 
594 	/* Zero the RSS table */
595 	for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
596 	    index++) {
597 		EFX_ZERO_OWORD(oword);
598 		EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
599 				    index, &oword, B_TRUE);
600 	}
601 
602 #if EFSYS_OPT_RX_SCALE
603 	/* The RSS key and indirection table are writable. */
604 	enp->en_rss_support = EFX_RX_SCALE_EXCLUSIVE;
605 
606 	/* Hardware can insert RX hash with/without RSS */
607 	enp->en_hash_support = EFX_RX_HASH_AVAILABLE;
608 #endif	/* EFSYS_OPT_RX_SCALE */
609 
610 	return (0);
611 }
612 
613 #if EFSYS_OPT_RX_SCATTER
614 static	__checkReturn	efx_rc_t
615 siena_rx_scatter_enable(
616 	__in		efx_nic_t *enp,
617 	__in		unsigned int buf_size)
618 {
619 	unsigned int nbuf32;
620 	efx_oword_t oword;
621 	efx_rc_t rc;
622 
623 	nbuf32 = buf_size / 32;
624 	if ((nbuf32 == 0) ||
625 	    (nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
626 	    ((buf_size % 32) != 0)) {
627 		rc = EINVAL;
628 		goto fail1;
629 	}
630 
631 	if (enp->en_rx_qcount > 0) {
632 		rc = EBUSY;
633 		goto fail2;
634 	}
635 
636 	/* Set scatter buffer size */
637 	EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
638 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
639 	EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
640 
641 	/* Enable scatter for packets not matching a filter */
642 	EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
643 	EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
644 	EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
645 
646 	return (0);
647 
648 fail2:
649 	EFSYS_PROBE(fail2);
650 fail1:
651 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
652 
653 	return (rc);
654 }
655 #endif	/* EFSYS_OPT_RX_SCATTER */
656 
657 
658 #define	EFX_RX_LFSR_HASH(_enp, _insert)					\
659 	do {								\
660 		efx_oword_t oword;					\
661 									\
662 		EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword);	\
663 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);	\
664 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);	\
665 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);	\
666 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,	\
667 		    (_insert) ? 1 : 0);					\
668 		EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);	\
669 									\
670 		if ((_enp)->en_family == EFX_FAMILY_SIENA) {		\
671 			EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3,	\
672 			    &oword);					\
673 			EFX_SET_OWORD_FIELD(oword,			\
674 			    FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0);	\
675 			EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3,	\
676 			    &oword);					\
677 		}							\
678 									\
679 		_NOTE(CONSTANTCONDITION)				\
680 	} while (B_FALSE)
681 
682 #define	EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp)		\
683 	do {								\
684 		efx_oword_t oword;					\
685 									\
686 		EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG,	&oword);	\
687 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1);	\
688 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH,		\
689 		    (_ip) ? 1 : 0);					\
690 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP,		\
691 		    (_tcp) ? 0 : 1);					\
692 		EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR,	\
693 		    (_insert) ? 1 : 0);					\
694 		EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword);	\
695 									\
696 		_NOTE(CONSTANTCONDITION)				\
697 	} while (B_FALSE)
698 
699 #define	EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc)			\
700 	do {								\
701 		efx_oword_t oword;					\
702 									\
703 		EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword);	\
704 		EFX_SET_OWORD_FIELD(oword,				\
705 		    FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1);		\
706 		EFX_SET_OWORD_FIELD(oword,				\
707 		    FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0);	\
708 		EFX_SET_OWORD_FIELD(oword,				\
709 		    FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1);	\
710 		EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword);	\
711 									\
712 		(_rc) = 0;						\
713 									\
714 		_NOTE(CONSTANTCONDITION)				\
715 	} while (B_FALSE)
716 
717 
718 #if EFSYS_OPT_RX_SCALE
719 
720 static	__checkReturn	efx_rc_t
721 siena_rx_scale_mode_set(
722 	__in		efx_nic_t *enp,
723 	__in		efx_rx_hash_alg_t alg,
724 	__in		efx_rx_hash_type_t type,
725 	__in		boolean_t insert)
726 {
727 	efx_rc_t rc;
728 
729 	switch (alg) {
730 	case EFX_RX_HASHALG_LFSR:
731 		EFX_RX_LFSR_HASH(enp, insert);
732 		break;
733 
734 	case EFX_RX_HASHALG_TOEPLITZ:
735 		EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
736 		    type & EFX_RX_HASH_IPV4,
737 		    type & EFX_RX_HASH_TCPIPV4);
738 
739 		EFX_RX_TOEPLITZ_IPV6_HASH(enp,
740 		    type & EFX_RX_HASH_IPV6,
741 		    type & EFX_RX_HASH_TCPIPV6,
742 		    rc);
743 		if (rc != 0)
744 			goto fail1;
745 
746 		break;
747 
748 	default:
749 		rc = EINVAL;
750 		goto fail2;
751 	}
752 
753 	return (0);
754 
755 fail2:
756 	EFSYS_PROBE(fail2);
757 fail1:
758 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
759 
760 	EFX_RX_LFSR_HASH(enp, B_FALSE);
761 
762 	return (rc);
763 }
764 #endif
765 
766 #if EFSYS_OPT_RX_SCALE
767 static	__checkReturn	efx_rc_t
768 siena_rx_scale_key_set(
769 	__in		efx_nic_t *enp,
770 	__in_ecount(n)	uint8_t *key,
771 	__in		size_t n)
772 {
773 	efx_oword_t oword;
774 	unsigned int byte;
775 	unsigned int offset;
776 	efx_rc_t rc;
777 
778 	byte = 0;
779 
780 	/* Write Toeplitz IPv4 hash key */
781 	EFX_ZERO_OWORD(oword);
782 	for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
783 	    offset > 0 && byte < n;
784 	    --offset)
785 		oword.eo_u8[offset - 1] = key[byte++];
786 
787 	EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
788 
789 	byte = 0;
790 
791 	/* Verify Toeplitz IPv4 hash key */
792 	EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
793 	for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
794 	    offset > 0 && byte < n;
795 	    --offset) {
796 		if (oword.eo_u8[offset - 1] != key[byte++]) {
797 			rc = EFAULT;
798 			goto fail1;
799 		}
800 	}
801 
802 	if ((enp->en_features & EFX_FEATURE_IPV6) == 0)
803 		goto done;
804 
805 	byte = 0;
806 
807 	/* Write Toeplitz IPv6 hash key 3 */
808 	EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
809 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
810 	    FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
811 	    offset > 0 && byte < n;
812 	    --offset)
813 		oword.eo_u8[offset - 1] = key[byte++];
814 
815 	EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
816 
817 	/* Write Toeplitz IPv6 hash key 2 */
818 	EFX_ZERO_OWORD(oword);
819 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
820 	    FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
821 	    offset > 0 && byte < n;
822 	    --offset)
823 		oword.eo_u8[offset - 1] = key[byte++];
824 
825 	EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
826 
827 	/* Write Toeplitz IPv6 hash key 1 */
828 	EFX_ZERO_OWORD(oword);
829 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
830 	    FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
831 	    offset > 0 && byte < n;
832 	    --offset)
833 		oword.eo_u8[offset - 1] = key[byte++];
834 
835 	EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
836 
837 	byte = 0;
838 
839 	/* Verify Toeplitz IPv6 hash key 3 */
840 	EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
841 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
842 	    FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
843 	    offset > 0 && byte < n;
844 	    --offset) {
845 		if (oword.eo_u8[offset - 1] != key[byte++]) {
846 			rc = EFAULT;
847 			goto fail2;
848 		}
849 	}
850 
851 	/* Verify Toeplitz IPv6 hash key 2 */
852 	EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
853 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
854 	    FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
855 	    offset > 0 && byte < n;
856 	    --offset) {
857 		if (oword.eo_u8[offset - 1] != key[byte++]) {
858 			rc = EFAULT;
859 			goto fail3;
860 		}
861 	}
862 
863 	/* Verify Toeplitz IPv6 hash key 1 */
864 	EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
865 	for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
866 	    FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
867 	    offset > 0 && byte < n;
868 	    --offset) {
869 		if (oword.eo_u8[offset - 1] != key[byte++]) {
870 			rc = EFAULT;
871 			goto fail4;
872 		}
873 	}
874 
875 done:
876 	return (0);
877 
878 fail4:
879 	EFSYS_PROBE(fail4);
880 fail3:
881 	EFSYS_PROBE(fail3);
882 fail2:
883 	EFSYS_PROBE(fail2);
884 fail1:
885 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
886 
887 	return (rc);
888 }
889 #endif
890 
891 #if EFSYS_OPT_RX_SCALE
892 static	__checkReturn	efx_rc_t
893 siena_rx_scale_tbl_set(
894 	__in		efx_nic_t *enp,
895 	__in_ecount(n)	unsigned int *table,
896 	__in		size_t n)
897 {
898 	efx_oword_t oword;
899 	int index;
900 	efx_rc_t rc;
901 
902 	EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
903 	EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
904 
905 	if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
906 		rc = EINVAL;
907 		goto fail1;
908 	}
909 
910 	for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
911 		uint32_t byte;
912 
913 		/* Calculate the entry to place in the table */
914 		byte = (n > 0) ? (uint32_t)table[index % n] : 0;
915 
916 		EFSYS_PROBE2(table, int, index, uint32_t, byte);
917 
918 		EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
919 
920 		/* Write the table */
921 		EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
922 				    index, &oword, B_TRUE);
923 	}
924 
925 	for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
926 		uint32_t byte;
927 
928 		/* Determine if we're starting a new batch */
929 		byte = (n > 0) ? (uint32_t)table[index % n] : 0;
930 
931 		/* Read the table */
932 		EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
933 				    index, &oword, B_TRUE);
934 
935 		/* Verify the entry */
936 		if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
937 			rc = EFAULT;
938 			goto fail2;
939 		}
940 	}
941 
942 	return (0);
943 
944 fail2:
945 	EFSYS_PROBE(fail2);
946 fail1:
947 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
948 
949 	return (rc);
950 }
951 #endif
952 
953 /*
954  * Falcon/Siena pseudo-header
955  * --------------------------
956  *
957  * Receive packets are prefixed by an optional 16 byte pseudo-header.
958  * The pseudo-header is a byte array of one of the forms:
959  *
960  *  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
961  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.TT.TT.TT.TT
962  * xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.xx.LL.LL
963  *
964  * where:
965  *   TT.TT.TT.TT   Toeplitz hash (32-bit big-endian)
966  *   LL.LL         LFSR hash     (16-bit big-endian)
967  */
968 
969 #if EFSYS_OPT_RX_SCALE
970 static	__checkReturn	uint32_t
971 siena_rx_prefix_hash(
972 	__in		efx_nic_t *enp,
973 	__in		efx_rx_hash_alg_t func,
974 	__in		uint8_t *buffer)
975 {
976 	_NOTE(ARGUNUSED(enp))
977 
978 	switch (func) {
979 	case EFX_RX_HASHALG_TOEPLITZ:
980 		return ((buffer[12] << 24) |
981 		    (buffer[13] << 16) |
982 		    (buffer[14] <<  8) |
983 		    buffer[15]);
984 
985 	case EFX_RX_HASHALG_LFSR:
986 		return ((buffer[14] << 8) | buffer[15]);
987 
988 	default:
989 		EFSYS_ASSERT(0);
990 		return (0);
991 	}
992 }
993 #endif /* EFSYS_OPT_RX_SCALE */
994 
995 static	__checkReturn	efx_rc_t
996 siena_rx_prefix_pktlen(
997 	__in		efx_nic_t *enp,
998 	__in		uint8_t *buffer,
999 	__out		uint16_t *lengthp)
1000 {
1001 	_NOTE(ARGUNUSED(enp, buffer, lengthp))
1002 
1003 	/* Not supported by Falcon/Siena hardware */
1004 	EFSYS_ASSERT(0);
1005 	return (ENOTSUP);
1006 }
1007 
1008 
1009 static			void
1010 siena_rx_qpost(
1011 	__in		efx_rxq_t *erp,
1012 	__in_ecount(n)	efsys_dma_addr_t *addrp,
1013 	__in		size_t size,
1014 	__in		unsigned int n,
1015 	__in		unsigned int completed,
1016 	__in		unsigned int added)
1017 {
1018 	efx_qword_t qword;
1019 	unsigned int i;
1020 	unsigned int offset;
1021 	unsigned int id;
1022 
1023 	/* The client driver must not overfill the queue */
1024 	EFSYS_ASSERT3U(added - completed + n, <=,
1025 	    EFX_RXQ_LIMIT(erp->er_mask + 1));
1026 
1027 	id = added & (erp->er_mask);
1028 	for (i = 0; i < n; i++) {
1029 		EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
1030 		    unsigned int, id, efsys_dma_addr_t, addrp[i],
1031 		    size_t, size);
1032 
1033 		EFX_POPULATE_QWORD_3(qword,
1034 		    FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
1035 		    FSF_AZ_RX_KER_BUF_ADDR_DW0,
1036 		    (uint32_t)(addrp[i] & 0xffffffff),
1037 		    FSF_AZ_RX_KER_BUF_ADDR_DW1,
1038 		    (uint32_t)(addrp[i] >> 32));
1039 
1040 		offset = id * sizeof (efx_qword_t);
1041 		EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
1042 
1043 		id = (id + 1) & (erp->er_mask);
1044 	}
1045 }
1046 
1047 static			void
1048 siena_rx_qpush(
1049 	__in	efx_rxq_t *erp,
1050 	__in	unsigned int added,
1051 	__inout	unsigned int *pushedp)
1052 {
1053 	efx_nic_t *enp = erp->er_enp;
1054 	unsigned int pushed = *pushedp;
1055 	uint32_t wptr;
1056 	efx_oword_t oword;
1057 	efx_dword_t dword;
1058 
1059 	/* All descriptors are pushed */
1060 	*pushedp = added;
1061 
1062 	/* Push the populated descriptors out */
1063 	wptr = added & erp->er_mask;
1064 
1065 	EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
1066 
1067 	/* Only write the third DWORD */
1068 	EFX_POPULATE_DWORD_1(dword,
1069 	    EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
1070 
1071 	/* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
1072 	EFX_DMA_SYNC_QUEUE_FOR_DEVICE(erp->er_esmp, erp->er_mask + 1,
1073 	    wptr, pushed & erp->er_mask);
1074 	EFSYS_PIO_WRITE_BARRIER();
1075 	EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
1076 			    erp->er_index, &dword, B_FALSE);
1077 }
1078 
1079 static	__checkReturn	efx_rc_t
1080 siena_rx_qflush(
1081 	__in	efx_rxq_t *erp)
1082 {
1083 	efx_nic_t *enp = erp->er_enp;
1084 	efx_oword_t oword;
1085 	uint32_t label;
1086 
1087 	label = erp->er_index;
1088 
1089 	/* Flush the queue */
1090 	EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
1091 	    FRF_AZ_RX_FLUSH_DESCQ, label);
1092 	EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
1093 
1094 	return (0);
1095 }
1096 
1097 static		void
1098 siena_rx_qenable(
1099 	__in	efx_rxq_t *erp)
1100 {
1101 	efx_nic_t *enp = erp->er_enp;
1102 	efx_oword_t oword;
1103 
1104 	EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
1105 
1106 	EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
1107 			    erp->er_index, &oword, B_TRUE);
1108 
1109 	EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
1110 	EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
1111 	EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
1112 
1113 	EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1114 			    erp->er_index, &oword, B_TRUE);
1115 }
1116 
1117 static	__checkReturn	efx_rc_t
1118 siena_rx_qcreate(
1119 	__in		efx_nic_t *enp,
1120 	__in		unsigned int index,
1121 	__in		unsigned int label,
1122 	__in		efx_rxq_type_t type,
1123 	__in		efsys_mem_t *esmp,
1124 	__in		size_t n,
1125 	__in		uint32_t id,
1126 	__in		efx_evq_t *eep,
1127 	__in		efx_rxq_t *erp)
1128 {
1129 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1130 	efx_oword_t oword;
1131 	uint32_t size;
1132 	boolean_t jumbo;
1133 	efx_rc_t rc;
1134 
1135 	_NOTE(ARGUNUSED(esmp))
1136 
1137 	EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS ==
1138 	    (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
1139 	EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
1140 	EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
1141 
1142 	EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MAXNDESCS));
1143 	EFX_STATIC_ASSERT(ISP2(EFX_RXQ_MINNDESCS));
1144 
1145 	if (!ISP2(n) || (n < EFX_RXQ_MINNDESCS) || (n > EFX_RXQ_MAXNDESCS)) {
1146 		rc = EINVAL;
1147 		goto fail1;
1148 	}
1149 	if (index >= encp->enc_rxq_limit) {
1150 		rc = EINVAL;
1151 		goto fail2;
1152 	}
1153 	for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS);
1154 	    size++)
1155 		if ((1 << size) == (int)(n / EFX_RXQ_MINNDESCS))
1156 			break;
1157 	if (id + (1 << size) >= encp->enc_buftbl_limit) {
1158 		rc = EINVAL;
1159 		goto fail3;
1160 	}
1161 
1162 	switch (type) {
1163 	case EFX_RXQ_TYPE_DEFAULT:
1164 		jumbo = B_FALSE;
1165 		break;
1166 
1167 #if EFSYS_OPT_RX_SCATTER
1168 	case EFX_RXQ_TYPE_SCATTER:
1169 		if (enp->en_family < EFX_FAMILY_SIENA) {
1170 			rc = EINVAL;
1171 			goto fail4;
1172 		}
1173 		jumbo = B_TRUE;
1174 		break;
1175 #endif	/* EFSYS_OPT_RX_SCATTER */
1176 
1177 	default:
1178 		rc = EINVAL;
1179 		goto fail4;
1180 	}
1181 
1182 	/* Set up the new descriptor queue */
1183 	EFX_POPULATE_OWORD_7(oword,
1184 	    FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
1185 	    FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
1186 	    FRF_AZ_RX_DESCQ_OWNER_ID, 0,
1187 	    FRF_AZ_RX_DESCQ_LABEL, label,
1188 	    FRF_AZ_RX_DESCQ_SIZE, size,
1189 	    FRF_AZ_RX_DESCQ_TYPE, 0,
1190 	    FRF_AZ_RX_DESCQ_JUMBO, jumbo);
1191 
1192 	EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1193 			    erp->er_index, &oword, B_TRUE);
1194 
1195 	return (0);
1196 
1197 fail4:
1198 	EFSYS_PROBE(fail4);
1199 fail3:
1200 	EFSYS_PROBE(fail3);
1201 fail2:
1202 	EFSYS_PROBE(fail2);
1203 fail1:
1204 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
1205 
1206 	return (rc);
1207 }
1208 
1209 static		void
1210 siena_rx_qdestroy(
1211 	__in	efx_rxq_t *erp)
1212 {
1213 	efx_nic_t *enp = erp->er_enp;
1214 	efx_oword_t oword;
1215 
1216 	EFSYS_ASSERT(enp->en_rx_qcount != 0);
1217 	--enp->en_rx_qcount;
1218 
1219 	/* Purge descriptor queue */
1220 	EFX_ZERO_OWORD(oword);
1221 
1222 	EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
1223 			    erp->er_index, &oword, B_TRUE);
1224 
1225 	/* Free the RXQ object */
1226 	EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
1227 }
1228 
1229 static		void
1230 siena_rx_fini(
1231 	__in	efx_nic_t *enp)
1232 {
1233 	_NOTE(ARGUNUSED(enp))
1234 }
1235 
1236 #endif /* EFSYS_OPT_SIENA */
1237