1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright(c) 2019-2020 Xilinx, Inc.
4 * Copyright(c) 2018-2019 Solarflare Communications Inc.
11 #if EFSYS_OPT_RIVERHEAD
14 * Maximum number of Rx prefixes supported by Rx prefix choice to be
15 * returned from firmware.
17 #define RHEAD_RX_PREFIX_IDS_MAX 16
20 * Default Rx prefix layout on Riverhead if FW does not support Rx
21 * prefix choice using MC_CMD_GET_RX_PREFIX_ID and query its layout
22 * using MC_CMD_QUERY_RX_PREFIX_ID.
24 * See SF-119689-TC Riverhead Host Interface section 6.4.
26 static const efx_rx_prefix_layout_t rhead_default_rx_prefix_layout = {
28 .erpl_length = ESE_GZ_RX_PKT_PREFIX_LEN,
30 #define RHEAD_RX_PREFIX_FIELD(_name, _big_endian) \
31 EFX_RX_PREFIX_FIELD(_name, ESF_GZ_RX_PREFIX_ ## _name, _big_endian)
33 RHEAD_RX_PREFIX_FIELD(LENGTH, B_FALSE),
34 RHEAD_RX_PREFIX_FIELD(RSS_HASH_VALID, B_FALSE),
35 RHEAD_RX_PREFIX_FIELD(USER_FLAG, B_FALSE),
36 RHEAD_RX_PREFIX_FIELD(CLASS, B_FALSE),
37 RHEAD_RX_PREFIX_FIELD(PARTIAL_TSTAMP, B_FALSE),
38 RHEAD_RX_PREFIX_FIELD(RSS_HASH, B_FALSE),
39 RHEAD_RX_PREFIX_FIELD(USER_MARK, B_FALSE),
40 RHEAD_RX_PREFIX_FIELD(INGRESS_VPORT, B_FALSE),
41 RHEAD_RX_PREFIX_FIELD(CSUM_FRAME, B_TRUE),
42 RHEAD_RX_PREFIX_FIELD(VLAN_STRIP_TCI, B_TRUE),
44 #undef RHEAD_RX_PREFIX_FIELD
48 __checkReturn efx_rc_t
54 rc = ef10_rx_init(enp);
61 EFSYS_PROBE1(fail1, efx_rc_t, rc);
72 #if EFSYS_OPT_RX_SCATTER
73 __checkReturn efx_rc_t
74 rhead_rx_scatter_enable(
76 __in unsigned int buf_size)
78 _NOTE(ARGUNUSED(enp, buf_size))
79 /* Nothing to do here */
82 #endif /* EFSYS_OPT_RX_SCATTER */
84 #if EFSYS_OPT_RX_SCALE
86 __checkReturn efx_rc_t
87 rhead_rx_scale_context_alloc(
89 __in efx_rx_scale_context_type_t type,
90 __in uint32_t num_queues,
91 __out uint32_t *rss_contextp)
95 rc = ef10_rx_scale_context_alloc(enp, type, num_queues, rss_contextp);
102 EFSYS_PROBE1(fail1, efx_rc_t, rc);
106 __checkReturn efx_rc_t
107 rhead_rx_scale_context_free(
109 __in uint32_t rss_context)
113 rc = ef10_rx_scale_context_free(enp, rss_context);
120 EFSYS_PROBE1(fail1, efx_rc_t, rc);
124 __checkReturn efx_rc_t
125 rhead_rx_scale_mode_set(
127 __in uint32_t rss_context,
128 __in efx_rx_hash_alg_t alg,
129 __in efx_rx_hash_type_t type,
130 __in boolean_t insert)
134 rc = ef10_rx_scale_mode_set(enp, rss_context, alg, type, insert);
141 EFSYS_PROBE1(fail1, efx_rc_t, rc);
145 __checkReturn efx_rc_t
146 rhead_rx_scale_key_set(
148 __in uint32_t rss_context,
149 __in_ecount(n) uint8_t *key,
154 rc = ef10_rx_scale_key_set(enp, rss_context, key, n);
161 EFSYS_PROBE1(fail1, efx_rc_t, rc);
165 __checkReturn efx_rc_t
166 rhead_rx_scale_tbl_set(
168 __in uint32_t rss_context,
169 __in_ecount(n) unsigned int *table,
174 rc = ef10_rx_scale_tbl_set(enp, rss_context, table, n);
181 EFSYS_PROBE1(fail1, efx_rc_t, rc);
185 __checkReturn uint32_t
186 rhead_rx_prefix_hash(
188 __in efx_rx_hash_alg_t func,
189 __in uint8_t *buffer)
191 _NOTE(ARGUNUSED(enp, func, buffer))
193 /* FIXME implement the method for Riverhead */
198 #endif /* EFSYS_OPT_RX_SCALE */
200 __checkReturn efx_rc_t
201 rhead_rx_prefix_pktlen(
203 __in uint8_t *buffer,
204 __out uint16_t *lengthp)
206 _NOTE(ARGUNUSED(enp, buffer, lengthp))
208 /* FIXME implement the method for Riverhead */
216 __in_ecount(ndescs) efsys_dma_addr_t *addrp,
218 __in unsigned int ndescs,
219 __in unsigned int completed,
220 __in unsigned int added)
222 _NOTE(ARGUNUSED(erp, addrp, size, ndescs, completed, added))
224 /* FIXME implement the method for Riverhead */
226 EFSYS_ASSERT(B_FALSE);
232 __in unsigned int added,
233 __inout unsigned int *pushedp)
235 _NOTE(ARGUNUSED(erp, added, pushedp))
237 /* FIXME implement the method for Riverhead */
239 EFSYS_ASSERT(B_FALSE);
242 __checkReturn efx_rc_t
246 efx_nic_t *enp = erp->er_enp;
249 if ((rc = efx_mcdi_fini_rxq(enp, erp->er_index)) != 0)
256 * EALREADY is not an error, but indicates that the MC has rebooted and
257 * that the RXQ has already been destroyed. Callers need to know that
258 * the RXQ flush has completed to avoid waiting until timeout for a
259 * flush done event that will not be delivered.
262 EFSYS_PROBE1(fail1, efx_rc_t, rc);
271 _NOTE(ARGUNUSED(erp))
274 static __checkReturn efx_rc_t
275 efx_mcdi_get_rx_prefix_ids(
277 __in uint32_t mcdi_fields_mask,
278 __in unsigned int max_ids,
279 __out unsigned int *nids,
280 __out_ecount_part(max_ids, *nids) uint32_t *idsp)
283 EFX_MCDI_DECLARE_BUF(payload, MC_CMD_GET_RX_PREFIX_ID_IN_LEN,
284 MC_CMD_GET_RX_PREFIX_ID_OUT_LENMAX);
288 req.emr_cmd = MC_CMD_GET_RX_PREFIX_ID;
289 req.emr_in_buf = payload;
290 req.emr_in_length = MC_CMD_GET_RX_PREFIX_ID_IN_LEN;
291 req.emr_out_buf = payload;
292 req.emr_out_length = MC_CMD_GET_RX_PREFIX_ID_OUT_LENMAX;
294 MCDI_IN_SET_DWORD(req, GET_RX_PREFIX_ID_IN_FIELDS, mcdi_fields_mask);
296 efx_mcdi_execute(enp, &req);
298 if (req.emr_rc != 0) {
303 if (req.emr_out_length_used < MC_CMD_GET_RX_PREFIX_ID_OUT_LENMIN) {
308 num = MCDI_OUT_DWORD(req, GET_RX_PREFIX_ID_OUT_NUM_RX_PREFIX_IDS);
310 if (req.emr_out_length_used != MC_CMD_GET_RX_PREFIX_ID_OUT_LEN(num)) {
315 *nids = MIN(num, max_ids);
317 EFX_STATIC_ASSERT(sizeof (idsp[0]) ==
318 MC_CMD_GET_RX_PREFIX_ID_OUT_RX_PREFIX_ID_LEN);
320 MCDI_OUT2(req, uint32_t, GET_RX_PREFIX_ID_OUT_RX_PREFIX_ID),
321 *nids * sizeof (idsp[0]));
330 EFSYS_PROBE1(fail1, efx_rc_t, rc);
335 static __checkReturn efx_rx_prefix_field_t
336 efx_mcdi_rx_prefix_field_map(unsigned int mcdi_idx)
338 static const efx_rx_prefix_field_t efx_mcdi_to_rx_prefix_field[] = {
339 #define EFX_MCDI_TO_RX_PREFIX_FIELD(_field) \
340 [RX_PREFIX_FIELD_INFO_ ## _field] = EFX_RX_PREFIX_FIELD_ ## _field
342 EFX_MCDI_TO_RX_PREFIX_FIELD(LENGTH),
343 EFX_MCDI_TO_RX_PREFIX_FIELD(RSS_HASH_VALID),
344 EFX_MCDI_TO_RX_PREFIX_FIELD(USER_FLAG),
345 EFX_MCDI_TO_RX_PREFIX_FIELD(CLASS),
346 EFX_MCDI_TO_RX_PREFIX_FIELD(PARTIAL_TSTAMP),
347 EFX_MCDI_TO_RX_PREFIX_FIELD(RSS_HASH),
348 EFX_MCDI_TO_RX_PREFIX_FIELD(USER_MARK),
349 EFX_MCDI_TO_RX_PREFIX_FIELD(INGRESS_VPORT),
350 EFX_MCDI_TO_RX_PREFIX_FIELD(CSUM_FRAME),
351 EFX_MCDI_TO_RX_PREFIX_FIELD(VLAN_STRIP_TCI),
353 #undef EFX_MCDI_TO_RX_PREFIX_FIELD
356 if (mcdi_idx >= EFX_ARRAY_SIZE(efx_mcdi_to_rx_prefix_field))
357 return (EFX_RX_PREFIX_NFIELDS);
359 return (efx_mcdi_to_rx_prefix_field[mcdi_idx]);
362 static __checkReturn int
363 efx_rx_prefix_field_map_to_mcdi(
364 __in efx_rx_prefix_field_t field)
366 static const int efx_rx_prefix_field_to_mcdi[] = {
367 [EFX_RX_PREFIX_FIELD_LENGTH] =
368 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_LENGTH),
369 [EFX_RX_PREFIX_FIELD_ORIG_LENGTH] = -1,
370 [EFX_RX_PREFIX_FIELD_CLASS] =
371 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_CLASS),
372 [EFX_RX_PREFIX_FIELD_RSS_HASH] =
373 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_RSS_HASH),
374 [EFX_RX_PREFIX_FIELD_RSS_HASH_VALID] =
375 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_RSS_HASH_VALID),
376 [EFX_RX_PREFIX_FIELD_PARTIAL_TSTAMP] =
377 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_PARTIAL_TSTAMP),
378 [EFX_RX_PREFIX_FIELD_VLAN_STRIP_TCI] =
379 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_VLAN_STRIP_TCI),
380 [EFX_RX_PREFIX_FIELD_INNER_VLAN_STRIP_TCI] = -1,
381 [EFX_RX_PREFIX_FIELD_USER_FLAG] =
382 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_USER_FLAG),
383 [EFX_RX_PREFIX_FIELD_USER_MARK] =
384 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_USER_MARK),
385 [EFX_RX_PREFIX_FIELD_USER_MARK_VALID] = -1,
386 [EFX_RX_PREFIX_FIELD_CSUM_FRAME] =
387 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_CSUM_FRAME),
388 [EFX_RX_PREFIX_FIELD_INGRESS_VPORT] =
389 EFX_LOW_BIT(MC_CMD_GET_RX_PREFIX_ID_IN_INGRESS_VPORT),
392 if (field >= EFX_ARRAY_SIZE(efx_rx_prefix_field_to_mcdi))
395 return (efx_rx_prefix_field_to_mcdi[field]);
398 static __checkReturn efx_rc_t
399 efx_rx_prefix_fields_mask_to_mcdi(
400 __in uint32_t fields_mask,
401 __out uint32_t *mcdi_fields_maskp)
403 uint32_t mcdi_fields_mask = 0;
406 for (i = 0; i < EFX_RX_PREFIX_NFIELDS; ++i) {
407 if (fields_mask & (1U << i)) {
408 int mcdi_field = efx_rx_prefix_field_map_to_mcdi(i);
413 mcdi_fields_mask |= (1U << mcdi_field);
417 *mcdi_fields_maskp = mcdi_fields_mask;
421 static __checkReturn efx_rc_t
422 efx_mcdi_query_rx_prefix_id(
424 __in uint32_t prefix_id,
425 __out efx_rx_prefix_layout_t *erplp)
428 EFX_MCDI_DECLARE_BUF(payload, MC_CMD_QUERY_RX_PREFIX_ID_IN_LEN,
429 MC_CMD_QUERY_RX_PREFIX_ID_OUT_LENMAX);
432 const efx_dword_t *resp;
433 const efx_dword_t *finfo;
434 unsigned int num_fields;
435 unsigned int mcdi_field;
436 efx_rx_prefix_field_t field;
439 req.emr_cmd = MC_CMD_QUERY_RX_PREFIX_ID;
440 req.emr_in_buf = payload;
441 req.emr_in_length = MC_CMD_QUERY_RX_PREFIX_ID_IN_LEN;
442 req.emr_out_buf = payload;
443 req.emr_out_length = MC_CMD_QUERY_RX_PREFIX_ID_OUT_LENMAX;
445 MCDI_IN_SET_DWORD(req, QUERY_RX_PREFIX_ID_IN_RX_PREFIX_ID, prefix_id);
447 efx_mcdi_execute(enp, &req);
449 if (req.emr_rc != 0) {
454 if (req.emr_out_length_used < MC_CMD_QUERY_RX_PREFIX_ID_OUT_LENMIN) {
459 if (MCDI_OUT_BYTE(req, QUERY_RX_PREFIX_ID_OUT_RESPONSE_TYPE) !=
460 MC_CMD_QUERY_RX_PREFIX_ID_OUT_RESPONSE_TYPE_FIXED) {
465 EFX_STATIC_ASSERT(MC_CMD_QUERY_RX_PREFIX_ID_OUT_LENMIN >=
466 MC_CMD_QUERY_RX_PREFIX_ID_OUT_RESPONSE_OFST);
467 response_len = req.emr_out_length_used -
468 MC_CMD_QUERY_RX_PREFIX_ID_OUT_RESPONSE_OFST;
470 if (response_len < RX_PREFIX_FIXED_RESPONSE_LENMIN) {
475 resp = MCDI_OUT2(req, efx_dword_t, QUERY_RX_PREFIX_ID_OUT_RESPONSE);
477 memset(erplp, 0, sizeof (*erplp));
478 erplp->erpl_id = prefix_id;
480 EFX_DWORD_FIELD(*resp, RX_PREFIX_FIXED_RESPONSE_PREFIX_LENGTH_BYTES);
482 EFX_DWORD_FIELD(*resp, RX_PREFIX_FIXED_RESPONSE_FIELD_COUNT);
484 if (response_len < RX_PREFIX_FIXED_RESPONSE_LEN(num_fields)) {
489 finfo = (const efx_dword_t *)((const uint8_t *)resp +
490 RX_PREFIX_FIXED_RESPONSE_FIELDS_OFST);
492 for (i = 0; i < num_fields; ++i, ++finfo) {
493 mcdi_field = EFX_DWORD_FIELD(*finfo, RX_PREFIX_FIELD_INFO_TYPE);
495 field = efx_mcdi_rx_prefix_field_map(mcdi_field);
496 if (field >= EFX_RX_PREFIX_NFIELDS)
499 erplp->erpl_fields[field].erpfi_offset_bits =
500 EFX_DWORD_FIELD(*finfo, RX_PREFIX_FIELD_INFO_OFFSET_BITS);
501 erplp->erpl_fields[field].erpfi_width_bits =
502 EFX_DWORD_FIELD(*finfo, RX_PREFIX_FIELD_INFO_WIDTH_BITS);
516 EFSYS_PROBE1(fail1, efx_rc_t, rc);
521 static __checkReturn efx_rc_t
522 rhead_rx_choose_prefix_id(
524 __in uint32_t fields_mask,
525 __out efx_rx_prefix_layout_t *erplp)
527 efx_rx_prefix_layout_t erpl;
528 uint32_t prefix_ids[RHEAD_RX_PREFIX_IDS_MAX];
529 uint32_t mcdi_fields_mask;
530 unsigned int num = 0;
534 rc = efx_rx_prefix_fields_mask_to_mcdi(fields_mask, &mcdi_fields_mask);
538 memset(erplp, 0, sizeof (*erplp));
540 rc = efx_mcdi_get_rx_prefix_ids(enp, mcdi_fields_mask,
541 EFX_ARRAY_SIZE(prefix_ids), &num, prefix_ids);
543 /* Not supported MCDI, use default prefix ID */
544 *erplp = rhead_default_rx_prefix_layout;
555 for (i = 0; i < num; ++i) {
556 rc = efx_mcdi_query_rx_prefix_id(enp, prefix_ids[i], &erpl);
560 /* Choose the smallest prefix which meets our requirements */
561 if (i == 0 || erpl.erpl_length < erplp->erpl_length)
575 EFSYS_PROBE1(fail1, efx_rc_t, rc);
580 __checkReturn efx_rc_t
583 __in unsigned int index,
584 __in unsigned int label,
585 __in efx_rxq_type_t type,
586 __in const efx_rxq_type_data_t *type_data,
587 __in efsys_mem_t *esmp,
590 __in unsigned int flags,
594 const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
595 efx_mcdi_init_rxq_params_t params;
596 efx_rx_prefix_layout_t erpl;
597 uint32_t fields_mask = 0;
602 EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS <=
603 (1 << ESF_GZ_EV_RXPKTS_Q_LABEL_WIDTH));
604 EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
606 memset(¶ms, 0, sizeof (params));
609 case EFX_RXQ_TYPE_DEFAULT:
610 if (type_data == NULL) {
614 params.buf_size = type_data->ertd_default.ed_buf_size;
621 /* Scatter can only be disabled if the firmware supports doing so */
622 if (flags & EFX_RXQ_FLAG_SCATTER)
623 params.disable_scatter = B_FALSE;
625 params.disable_scatter = encp->enc_rx_disable_scatter_supported;
627 if (flags & EFX_RXQ_FLAG_RSS_HASH) {
628 fields_mask |= 1U << EFX_RX_PREFIX_FIELD_RSS_HASH;
629 fields_mask |= 1U << EFX_RX_PREFIX_FIELD_RSS_HASH_VALID;
633 * LENGTH is required in EF100 host interface, as receive events
634 * do not include the packet length.
636 fields_mask |= 1U << EFX_RX_PREFIX_FIELD_LENGTH;
637 if ((rc = rhead_rx_choose_prefix_id(enp, fields_mask, &erpl)) != 0)
640 params.prefix_id = erpl.erpl_id;
643 * Ignore EFX_RXQ_FLAG_INNER_CLASSES since in accordance with
644 * EF100 host interface both inner and outer classes are provided
645 * by HW if applicable.
648 if ((rc = efx_mcdi_init_rxq(enp, ndescs, eep, label, index,
649 esmp, ¶ms)) != 0)
653 erp->er_label = label;
654 erp->er_buf_size = params.buf_size;
655 erp->er_prefix_layout = erpl;
666 EFSYS_PROBE1(fail1, efx_rc_t, rc);
675 _NOTE(ARGUNUSED(erp))
676 /* Nothing to do here */
679 #endif /* EFSYS_OPT_RIVERHEAD */