2 *------------------------------------------------------------------
3 * Copyright (c) 2018 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
18 #include <vlib/vlib.h>
19 #include <vlib/unix/unix.h>
20 #include <vlib/pci/pci.h>
21 #include <vnet/ethernet/ethernet.h>
25 #define AVF_MBOX_LEN 64
26 #define AVF_MBOX_BUF_SZ 512
27 #define AVF_RXQ_SZ 512
28 #define AVF_TXQ_SZ 512
29 #define AVF_ITR_INT 8160
31 #define PCI_VENDOR_ID_INTEL 0x8086
32 #define PCI_DEVICE_ID_INTEL_AVF 0x1889
33 #define PCI_DEVICE_ID_INTEL_X710_VF 0x154c
34 #define PCI_DEVICE_ID_INTEL_X722_VF 0x37cd
38 static pci_device_id_t avf_pci_device_ids[] = {
39 {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_AVF},
40 {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_X710_VF},
41 {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_X722_VF},
46 avf_irq_0_disable (avf_device_t * ad)
48 u32 dyn_ctl0 = 0, icr0_ena = 0;
50 dyn_ctl0 |= (3 << 3); /* 11b = No ITR update */
52 avf_reg_write (ad, AVFINT_ICR0_ENA1, icr0_ena);
53 avf_reg_write (ad, AVFINT_DYN_CTL0, dyn_ctl0);
58 avf_irq_0_enable (avf_device_t * ad)
60 u32 dyn_ctl0 = 0, icr0_ena = 0;
62 icr0_ena |= (1 << 30); /* [30] Admin Queue Enable */
64 dyn_ctl0 |= (1 << 0); /* [0] Interrupt Enable */
65 dyn_ctl0 |= (1 << 1); /* [1] Clear PBA */
66 //dyn_ctl0 |= (3 << 3); /* [4:3] ITR Index, 11b = No ITR update */
67 dyn_ctl0 |= ((AVF_ITR_INT / 2) << 5); /* [16:5] ITR Interval in 2us steps */
69 avf_irq_0_disable (ad);
70 avf_reg_write (ad, AVFINT_ICR0_ENA1, icr0_ena);
71 avf_reg_write (ad, AVFINT_DYN_CTL0, dyn_ctl0);
76 avf_irq_n_disable (avf_device_t * ad, u8 line)
80 avf_reg_write (ad, AVFINT_DYN_CTLN (line), dyn_ctln);
85 avf_irq_n_enable (avf_device_t * ad, u8 line)
89 dyn_ctln |= (1 << 0); /* [0] Interrupt Enable */
90 dyn_ctln |= (1 << 1); /* [1] Clear PBA */
91 dyn_ctln |= ((AVF_ITR_INT / 2) << 5); /* [16:5] ITR Interval in 2us steps */
93 avf_irq_n_disable (ad, line);
94 avf_reg_write (ad, AVFINT_DYN_CTLN (line), dyn_ctln);
100 avf_aq_desc_enq (vlib_main_t * vm, avf_device_t * ad, avf_aq_desc_t * dt,
103 avf_main_t *am = &avf_main;
104 clib_error_t *err = 0;
105 avf_aq_desc_t *d, dc;
108 d = &ad->atq[ad->atq_next_slot];
109 clib_memcpy_fast (d, dt, sizeof (avf_aq_desc_t));
110 d->flags |= AVF_AQ_F_RD | AVF_AQ_F_SI;
116 pa = ad->atq_bufs_pa + ad->atq_next_slot * AVF_MBOX_BUF_SZ;
117 d->addr_hi = (u32) (pa >> 32);
118 d->addr_lo = (u32) pa;
119 clib_memcpy_fast (ad->atq_bufs + ad->atq_next_slot * AVF_MBOX_BUF_SZ,
121 d->flags |= AVF_AQ_F_BUF;
124 if (ad->flags & AVF_DEVICE_F_ELOG)
125 clib_memcpy_fast (&dc, d, sizeof (avf_aq_desc_t));
127 CLIB_MEMORY_BARRIER ();
128 vlib_log_debug (am->log_class, "%U", format_hexdump, data, len);
129 ad->atq_next_slot = (ad->atq_next_slot + 1) % AVF_MBOX_LEN;
130 avf_reg_write (ad, AVF_ATQT, ad->atq_next_slot);
134 vlib_process_suspend (vm, 10e-6);
136 if (((d->flags & AVF_AQ_F_DD) == 0) || ((d->flags & AVF_AQ_F_CMP) == 0))
140 err = clib_error_return (0, "adminq enqueue timeout [opcode 0x%x]",
147 clib_memcpy_fast (dt, d, sizeof (avf_aq_desc_t));
148 if (d->flags & AVF_AQ_F_ERR)
149 return clib_error_return (0, "adminq enqueue error [opcode 0x%x, retval "
150 "%d]", d->opcode, d->retval);
153 if (ad->flags & AVF_DEVICE_F_ELOG)
156 ELOG_TYPE_DECLARE (el) =
158 .format = "avf[%d] aq enq: s_flags 0x%x r_flags 0x%x opcode 0x%x "
159 "datalen %d retval %d",
160 .format_args = "i4i2i2i2i2i2",
171 ed = ELOG_DATA (&vm->elog_main, el);
172 ed->dev_instance = ad->dev_instance;
173 ed->s_flags = dc.flags;
174 ed->r_flags = d->flags;
175 ed->opcode = dc.opcode;
176 ed->datalen = dc.datalen;
177 ed->retval = d->retval;
185 avf_cmd_rx_ctl_reg_write (vlib_main_t * vm, avf_device_t * ad, u32 reg,
189 avf_aq_desc_t d = {.opcode = 0x207,.param1 = reg,.param3 = val };
190 err = avf_aq_desc_enq (vm, ad, &d, 0, 0);
192 if (ad->flags & AVF_DEVICE_F_ELOG)
195 ELOG_TYPE_DECLARE (el) =
197 .format = "avf[%d] rx ctl reg write: reg 0x%x val 0x%x ",
198 .format_args = "i4i4i4",
206 ed = ELOG_DATA (&vm->elog_main, el);
207 ed->dev_instance = ad->dev_instance;
216 avf_rxq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid, u16 rxq_size)
222 vec_validate_aligned (ad->rxqs, qid, CLIB_CACHE_LINE_BYTES);
223 rxq = vec_elt_at_index (ad->rxqs, qid);
224 rxq->size = rxq_size;
226 rxq->descs = vlib_physmem_alloc_aligned (vm, rxq->size *
227 sizeof (avf_rx_desc_t),
228 2 * CLIB_CACHE_LINE_BYTES);
230 return vlib_physmem_last_error (vm);
232 if ((err = vlib_pci_map_dma (vm, ad->pci_dev_handle, (void *) rxq->descs)))
235 clib_memset ((void *) rxq->descs, 0, rxq->size * sizeof (avf_rx_desc_t));
236 vec_validate_aligned (rxq->bufs, rxq->size, CLIB_CACHE_LINE_BYTES);
237 rxq->qrx_tail = ad->bar0 + AVF_QRX_TAIL (qid);
239 n_alloc = vlib_buffer_alloc (vm, rxq->bufs, rxq->size - 8);
242 return clib_error_return (0, "buffer allocation error");
244 rxq->n_enqueued = n_alloc;
245 avf_rx_desc_t *d = rxq->descs;
246 for (i = 0; i < n_alloc; i++)
248 vlib_buffer_t *b = vlib_get_buffer (vm, rxq->bufs[i]);
249 if (ad->flags & AVF_DEVICE_F_VA_DMA)
250 d->qword[0] = vlib_buffer_get_va (b);
252 d->qword[0] = vlib_buffer_get_pa (vm, b);
256 ad->n_rx_queues = clib_min (ad->num_queue_pairs, qid + 1);
261 avf_txq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid, u16 txq_size)
266 if (qid >= ad->num_queue_pairs)
268 qid = qid % ad->num_queue_pairs;
269 txq = vec_elt_at_index (ad->txqs, qid);
271 clib_spinlock_init (&txq->lock);
272 ad->flags |= AVF_DEVICE_F_SHARED_TXQ_LOCK;
276 vec_validate_aligned (ad->txqs, qid, CLIB_CACHE_LINE_BYTES);
277 txq = vec_elt_at_index (ad->txqs, qid);
278 txq->size = txq_size;
280 txq->descs = vlib_physmem_alloc_aligned (vm, txq->size *
281 sizeof (avf_tx_desc_t),
282 2 * CLIB_CACHE_LINE_BYTES);
284 return vlib_physmem_last_error (vm);
286 if ((err = vlib_pci_map_dma (vm, ad->pci_dev_handle, (void *) txq->descs)))
289 vec_validate_aligned (txq->bufs, txq->size, CLIB_CACHE_LINE_BYTES);
290 txq->qtx_tail = ad->bar0 + AVF_QTX_TAIL (qid);
292 ad->n_tx_queues = clib_min (ad->num_queue_pairs, qid + 1);
300 } virtchnl_promisc_info_t;
303 avf_arq_slot_init (avf_device_t * ad, u16 slot)
306 u64 pa = ad->arq_bufs_pa + slot * AVF_MBOX_BUF_SZ;
308 clib_memset (d, 0, sizeof (avf_aq_desc_t));
309 d->flags = AVF_AQ_F_BUF;
310 d->datalen = AVF_MBOX_BUF_SZ;
311 d->addr_hi = (u32) (pa >> 32);
312 d->addr_lo = (u32) pa;
316 avf_dma_addr (vlib_main_t * vm, avf_device_t * ad, void *p)
318 return (ad->flags & AVF_DEVICE_F_VA_DMA) ?
319 pointer_to_uword (p) : vlib_physmem_get_pa (vm, p);
323 avf_adminq_init (vlib_main_t * vm, avf_device_t * ad)
328 /* VF MailBox Transmit */
329 clib_memset (ad->atq, 0, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN);
330 ad->atq_bufs_pa = avf_dma_addr (vm, ad, ad->atq_bufs);
332 pa = avf_dma_addr (vm, ad, ad->atq);
333 avf_reg_write (ad, AVF_ATQT, 0); /* Tail */
334 avf_reg_write (ad, AVF_ATQH, 0); /* Head */
335 avf_reg_write (ad, AVF_ATQLEN, AVF_MBOX_LEN | (1ULL << 31)); /* len & ena */
336 avf_reg_write (ad, AVF_ATQBAL, (u32) pa); /* Base Address Low */
337 avf_reg_write (ad, AVF_ATQBAH, (u32) (pa >> 32)); /* Base Address High */
339 /* VF MailBox Receive */
340 clib_memset (ad->arq, 0, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN);
341 ad->arq_bufs_pa = avf_dma_addr (vm, ad, ad->arq_bufs);
343 for (i = 0; i < AVF_MBOX_LEN; i++)
344 avf_arq_slot_init (ad, i);
346 pa = avf_dma_addr (vm, ad, ad->arq);
348 avf_reg_write (ad, AVF_ARQH, 0); /* Head */
349 avf_reg_write (ad, AVF_ARQT, 0); /* Head */
350 avf_reg_write (ad, AVF_ARQLEN, AVF_MBOX_LEN | (1ULL << 31)); /* len & ena */
351 avf_reg_write (ad, AVF_ARQBAL, (u32) pa); /* Base Address Low */
352 avf_reg_write (ad, AVF_ARQBAH, (u32) (pa >> 32)); /* Base Address High */
353 avf_reg_write (ad, AVF_ARQT, AVF_MBOX_LEN - 1); /* Tail */
355 ad->atq_next_slot = 0;
356 ad->arq_next_slot = 0;
360 avf_send_to_pf (vlib_main_t * vm, avf_device_t * ad, virtchnl_ops_t op,
361 void *in, int in_len, void *out, int out_len)
364 avf_aq_desc_t *d, dt = {.opcode = 0x801,.v_opcode = op };
369 /* supppres interrupt in the next adminq receive slot
370 as we are going to wait for response
371 we only need interrupts when event is received */
372 d = &ad->arq[ad->arq_next_slot];
373 d->flags |= AVF_AQ_F_SI;
375 if ((err = avf_aq_desc_enq (vm, ad, &dt, in, in_len)))
379 head = avf_get_u32 (ad->bar0, AVF_ARQH);
381 if (ad->arq_next_slot == head)
384 return clib_error_return (0, "timeout");
385 vlib_process_suspend (vm, 10e-3);
389 d = &ad->arq[ad->arq_next_slot];
391 if (d->v_opcode == VIRTCHNL_OP_EVENT)
393 void *buf = ad->arq_bufs + ad->arq_next_slot * AVF_MBOX_BUF_SZ;
394 virtchnl_pf_event_t *e;
396 if ((d->datalen != sizeof (virtchnl_pf_event_t)) ||
397 ((d->flags & AVF_AQ_F_BUF) == 0))
398 return clib_error_return (0, "event message error");
400 vec_add2 (ad->events, e, 1);
401 clib_memcpy_fast (e, buf, sizeof (virtchnl_pf_event_t));
402 avf_arq_slot_init (ad, ad->arq_next_slot);
408 if (d->v_opcode != op)
411 clib_error_return (0,
412 "unexpected message receiver [v_opcode = %u, "
413 "expected %u, v_retval %d]", d->v_opcode, op,
420 err = clib_error_return (0, "error [v_opcode = %u, v_retval %d]",
421 d->v_opcode, d->v_retval);
425 if (d->flags & AVF_AQ_F_BUF)
427 void *buf = ad->arq_bufs + ad->arq_next_slot * AVF_MBOX_BUF_SZ;
428 clib_memcpy_fast (out, buf, out_len);
431 avf_arq_slot_init (ad, ad->arq_next_slot);
432 avf_reg_write (ad, AVF_ARQT, ad->arq_next_slot);
434 ad->arq_next_slot = (ad->arq_next_slot + 1) % AVF_MBOX_LEN;
438 if (ad->flags & AVF_DEVICE_F_ELOG)
441 ELOG_TYPE_DECLARE (el) =
443 .format = "avf[%d] send to pf: v_opcode %s (%d) v_retval 0x%x",
444 .format_args = "i4t4i4i4",
445 .n_enum_strings = VIRTCHNL_N_OPS,
447 #define _(v, n) [v] = #n,
459 ed = ELOG_DATA (&vm->elog_main, el);
460 ed->dev_instance = ad->dev_instance;
462 ed->v_opcode_val = op;
463 ed->v_retval = d->v_retval;
470 avf_op_version (vlib_main_t * vm, avf_device_t * ad,
471 virtchnl_version_info_t * ver)
473 clib_error_t *err = 0;
474 virtchnl_version_info_t myver = {
475 .major = VIRTCHNL_VERSION_MAJOR,
476 .minor = VIRTCHNL_VERSION_MINOR,
479 err = avf_send_to_pf (vm, ad, VIRTCHNL_OP_VERSION, &myver,
480 sizeof (virtchnl_version_info_t), ver,
481 sizeof (virtchnl_version_info_t));
490 avf_op_get_vf_resources (vlib_main_t * vm, avf_device_t * ad,
491 virtchnl_vf_resource_t * res)
493 u32 bitmap = (VIRTCHNL_VF_OFFLOAD_L2 | VIRTCHNL_VF_OFFLOAD_RSS_PF |
494 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR | VIRTCHNL_VF_OFFLOAD_VLAN |
495 VIRTCHNL_VF_OFFLOAD_RX_POLLING);
497 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_GET_VF_RESOURCES, &bitmap,
498 sizeof (u32), res, sizeof (virtchnl_vf_resource_t));
502 avf_op_config_rss_lut (vlib_main_t * vm, avf_device_t * ad)
504 int msg_len = sizeof (virtchnl_rss_lut_t) + ad->rss_lut_size - 1;
507 virtchnl_rss_lut_t *rl;
509 clib_memset (msg, 0, msg_len);
510 rl = (virtchnl_rss_lut_t *) msg;
511 rl->vsi_id = ad->vsi_id;
512 rl->lut_entries = ad->rss_lut_size;
513 for (i = 0; i < ad->rss_lut_size; i++)
514 rl->lut[i] = i % ad->n_rx_queues;
516 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_RSS_LUT, msg, msg_len, 0,
521 avf_op_config_rss_key (vlib_main_t * vm, avf_device_t * ad)
523 int msg_len = sizeof (virtchnl_rss_key_t) + ad->rss_key_size - 1;
526 virtchnl_rss_key_t *rk;
528 clib_memset (msg, 0, msg_len);
529 rk = (virtchnl_rss_key_t *) msg;
530 rk->vsi_id = ad->vsi_id;
531 rk->key_len = ad->rss_key_size;
532 u32 seed = random_default_seed ();
533 for (i = 0; i < ad->rss_key_size; i++)
534 rk->key[i] = (u8) random_u32 (&seed);
536 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_RSS_KEY, msg, msg_len, 0,
541 avf_op_disable_vlan_stripping (vlib_main_t * vm, avf_device_t * ad)
543 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 0, 0, 0,
548 avf_config_promisc_mode (vlib_main_t * vm, avf_device_t * ad)
550 virtchnl_promisc_info_t pi = { 0 };
552 pi.vsi_id = ad->vsi_id;
554 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, &pi,
555 sizeof (virtchnl_promisc_info_t), 0, 0);
560 avf_op_config_vsi_queues (vlib_main_t * vm, avf_device_t * ad)
563 int n_qp = clib_max (vec_len (ad->rxqs), vec_len (ad->txqs));
564 int msg_len = sizeof (virtchnl_vsi_queue_config_info_t) + n_qp *
565 sizeof (virtchnl_queue_pair_info_t);
567 virtchnl_vsi_queue_config_info_t *ci;
569 clib_memset (msg, 0, msg_len);
570 ci = (virtchnl_vsi_queue_config_info_t *) msg;
571 ci->vsi_id = ad->vsi_id;
572 ci->num_queue_pairs = n_qp;
574 for (i = 0; i < n_qp; i++)
576 virtchnl_txq_info_t *txq = &ci->qpair[i].txq;
577 virtchnl_rxq_info_t *rxq = &ci->qpair[i].rxq;
579 rxq->vsi_id = ad->vsi_id;
581 rxq->max_pkt_size = 1518;
582 if (i < vec_len (ad->rxqs))
584 avf_rxq_t *q = vec_elt_at_index (ad->rxqs, i);
585 rxq->ring_len = q->size;
586 rxq->databuffer_size = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES;
587 rxq->dma_ring_addr = avf_dma_addr (vm, ad, (void *) q->descs);
588 avf_reg_write (ad, AVF_QRX_TAIL (i), q->size - 1);
591 avf_txq_t *q = vec_elt_at_index (ad->txqs, i);
592 txq->vsi_id = ad->vsi_id;
593 if (i < vec_len (ad->txqs))
596 txq->ring_len = q->size;
597 txq->dma_ring_addr = avf_dma_addr (vm, ad, (void *) q->descs);
601 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_VSI_QUEUES, msg, msg_len,
606 avf_op_config_irq_map (vlib_main_t * vm, avf_device_t * ad)
609 int msg_len = sizeof (virtchnl_irq_map_info_t) +
610 count * sizeof (virtchnl_vector_map_t);
612 virtchnl_irq_map_info_t *imi;
614 clib_memset (msg, 0, msg_len);
615 imi = (virtchnl_irq_map_info_t *) msg;
616 imi->num_vectors = count;
618 imi->vecmap[0].vector_id = 1;
619 imi->vecmap[0].vsi_id = ad->vsi_id;
620 imi->vecmap[0].rxq_map = 1;
621 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_IRQ_MAP, msg, msg_len, 0,
626 avf_op_add_eth_addr (vlib_main_t * vm, avf_device_t * ad, u8 count, u8 * macs)
629 sizeof (virtchnl_ether_addr_list_t) +
630 count * sizeof (virtchnl_ether_addr_t);
632 virtchnl_ether_addr_list_t *al;
635 clib_memset (msg, 0, msg_len);
636 al = (virtchnl_ether_addr_list_t *) msg;
637 al->vsi_id = ad->vsi_id;
638 al->num_elements = count;
639 for (i = 0; i < count; i++)
640 clib_memcpy_fast (&al->list[i].addr, macs + i * 6, 6);
641 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_ADD_ETH_ADDR, msg, msg_len, 0,
646 avf_op_enable_queues (vlib_main_t * vm, avf_device_t * ad, u32 rx, u32 tx)
648 virtchnl_queue_select_t qs = { 0 };
650 qs.vsi_id = ad->vsi_id;
653 for (i = 0; i < ad->n_rx_queues; i++)
655 avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, i);
656 avf_reg_write (ad, AVF_QRX_TAIL (i), rxq->n_enqueued);
658 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_ENABLE_QUEUES, &qs,
659 sizeof (virtchnl_queue_select_t), 0, 0);
663 avf_op_get_stats (vlib_main_t * vm, avf_device_t * ad,
664 virtchnl_eth_stats_t * es)
666 virtchnl_queue_select_t qs = { 0 };
667 qs.vsi_id = ad->vsi_id;
668 return avf_send_to_pf (vm, ad, VIRTCHNL_OP_GET_STATS,
669 &qs, sizeof (virtchnl_queue_select_t),
670 es, sizeof (virtchnl_eth_stats_t));
674 avf_device_reset (vlib_main_t * vm, avf_device_t * ad)
676 avf_aq_desc_t d = { 0 };
682 d.v_opcode = VIRTCHNL_OP_RESET_VF;
683 if ((error = avf_aq_desc_enq (vm, ad, &d, 0, 0)))
687 vlib_process_suspend (vm, 10e-3);
688 rstat = avf_get_u32 (ad->bar0, AVFGEN_RSTAT);
690 if (rstat == 2 || rstat == 3)
694 return clib_error_return (0, "reset failed (timeout)");
700 avf_request_queues (vlib_main_t * vm, avf_device_t * ad, u16 num_queue_pairs)
702 virtchnl_vf_res_request_t res_req = { 0 };
707 res_req.num_queue_pairs = num_queue_pairs;
709 error = avf_send_to_pf (vm, ad, VIRTCHNL_OP_REQUEST_QUEUES, &res_req,
710 sizeof (virtchnl_vf_res_request_t), &res_req,
711 sizeof (virtchnl_vf_res_request_t));
714 * if PF respondes, the request failed
715 * else PF initializes restart and avf_send_to_pf returns an error
719 return clib_error_return (0, "requested more than %u queue pairs",
720 res_req.num_queue_pairs);
724 vlib_process_suspend (vm, 10e-3);
725 rstat = avf_get_u32 (ad->bar0, AVFGEN_RSTAT);
727 if ((rstat == VIRTCHNL_VFR_COMPLETED) || (rstat == VIRTCHNL_VFR_VFACTIVE))
731 return clib_error_return (0, "reset failed (timeout)");
740 avf_device_init (vlib_main_t * vm, avf_main_t * am, avf_device_t * ad,
741 avf_create_if_args_t * args)
743 virtchnl_version_info_t ver = { 0 };
744 virtchnl_vf_resource_t res = { 0 };
746 vlib_thread_main_t *tm = vlib_get_thread_main ();
749 avf_adminq_init (vm, ad);
751 /* request more queues only if we need them */
752 if ((error = avf_request_queues (vm, ad, tm->n_vlib_mains)))
754 /* we failed to get more queues, but still we want to proceed */
755 clib_error_free (error);
757 if ((error = avf_device_reset (vm, ad)))
761 avf_adminq_init (vm, ad);
766 if ((error = avf_op_version (vm, ad, &ver)))
769 if (ver.major != VIRTCHNL_VERSION_MAJOR ||
770 ver.minor != VIRTCHNL_VERSION_MINOR)
771 return clib_error_return (0, "incompatible protocol version "
772 "(remote %d.%d)", ver.major, ver.minor);
777 if ((error = avf_op_get_vf_resources (vm, ad, &res)))
780 if (res.num_vsis != 1 || res.vsi_res[0].vsi_type != VIRTCHNL_VSI_SRIOV)
781 return clib_error_return (0, "unexpected GET_VF_RESOURCE reply received");
783 ad->vsi_id = res.vsi_res[0].vsi_id;
784 ad->feature_bitmap = res.vf_offload_flags;
785 ad->num_queue_pairs = res.num_queue_pairs;
786 ad->max_vectors = res.max_vectors;
787 ad->max_mtu = res.max_mtu;
788 ad->rss_key_size = res.rss_key_size;
789 ad->rss_lut_size = res.rss_lut_size;
791 clib_memcpy_fast (ad->hwaddr, res.vsi_res[0].default_mac_addr, 6);
794 * Disable VLAN stripping
796 if ((error = avf_op_disable_vlan_stripping (vm, ad)))
799 if ((error = avf_config_promisc_mode (vm, ad)))
805 if (args->rxq_num == 0)
809 else if (args->rxq_num > ad->num_queue_pairs)
811 args->rxq_num = ad->num_queue_pairs;
812 vlib_log_warn (am->log_class, "Requested more rx queues than"
813 "queue pairs available. Using %u rx queues.",
817 for (i = 0; i < args->rxq_num; i++)
818 if ((error = avf_rxq_init (vm, ad, i, args->rxq_size)))
821 for (i = 0; i < tm->n_vlib_mains; i++)
822 if ((error = avf_txq_init (vm, ad, i, args->txq_size)))
825 if ((ad->feature_bitmap & VIRTCHNL_VF_OFFLOAD_RSS_PF) &&
826 (error = avf_op_config_rss_lut (vm, ad)))
829 if ((ad->feature_bitmap & VIRTCHNL_VF_OFFLOAD_RSS_PF) &&
830 (error = avf_op_config_rss_key (vm, ad)))
833 if ((error = avf_op_config_vsi_queues (vm, ad)))
836 if ((error = avf_op_config_irq_map (vm, ad)))
839 avf_irq_0_enable (ad);
840 for (i = 0; i < ad->n_rx_queues; i++)
841 avf_irq_n_enable (ad, i);
843 if ((error = avf_op_add_eth_addr (vm, ad, 1, ad->hwaddr)))
846 if ((error = avf_op_enable_queues (vm, ad, ad->n_rx_queues, 0)))
849 if ((error = avf_op_enable_queues (vm, ad, 0, ad->n_tx_queues)))
852 ad->flags |= AVF_DEVICE_F_INITIALIZED;
857 avf_process_one_device (vlib_main_t * vm, avf_device_t * ad, int is_irq)
859 avf_main_t *am = &avf_main;
860 vnet_main_t *vnm = vnet_get_main ();
861 virtchnl_pf_event_t *e;
864 if (ad->flags & AVF_DEVICE_F_ERROR)
867 if ((ad->flags & AVF_DEVICE_F_INITIALIZED) == 0)
870 ASSERT (ad->error == 0);
872 /* do not process device in reset state */
873 r = avf_get_u32 (ad->bar0, AVFGEN_RSTAT);
874 if (r != VIRTCHNL_VFR_VFACTIVE)
877 r = avf_get_u32 (ad->bar0, AVF_ARQLEN);
878 if ((r & 0xf0000000) != (1ULL << 31))
880 ad->error = clib_error_return (0, "arq not enabled, arqlen = 0x%x", r);
884 r = avf_get_u32 (ad->bar0, AVF_ATQLEN);
885 if ((r & 0xf0000000) != (1ULL << 31))
887 ad->error = clib_error_return (0, "atq not enabled, atqlen = 0x%x", r);
892 avf_op_get_stats (vm, ad, &ad->eth_stats);
895 vec_foreach (e, ad->events)
897 if (e->event == VIRTCHNL_EVENT_LINK_CHANGE)
899 int link_up = e->event_data.link_event.link_status;
900 virtchnl_link_speed_t speed = e->event_data.link_event.link_speed;
904 if (link_up && (ad->flags & AVF_DEVICE_F_LINK_UP) == 0)
906 ad->flags |= AVF_DEVICE_F_LINK_UP;
907 flags |= (VNET_HW_INTERFACE_FLAG_FULL_DUPLEX |
908 VNET_HW_INTERFACE_FLAG_LINK_UP);
909 if (speed == VIRTCHNL_LINK_SPEED_40GB)
911 else if (speed == VIRTCHNL_LINK_SPEED_25GB)
913 else if (speed == VIRTCHNL_LINK_SPEED_10GB)
915 else if (speed == VIRTCHNL_LINK_SPEED_1GB)
917 else if (speed == VIRTCHNL_LINK_SPEED_100MB)
919 vnet_hw_interface_set_flags (vnm, ad->hw_if_index, flags);
920 vnet_hw_interface_set_link_speed (vnm, ad->hw_if_index, kbps);
921 ad->link_speed = speed;
923 else if (!link_up && (ad->flags & AVF_DEVICE_F_LINK_UP) != 0)
925 ad->flags &= ~AVF_DEVICE_F_LINK_UP;
929 if (ad->flags & AVF_DEVICE_F_ELOG)
931 ELOG_TYPE_DECLARE (el) =
933 .format = "avf[%d] link change: link_status %d "
935 .format_args = "i4i1i1",
943 ed = ELOG_DATA (&vm->elog_main, el);
944 ed->dev_instance = ad->dev_instance;
945 ed->link_status = link_up;
946 ed->link_speed = speed;
951 if (ad->flags & AVF_DEVICE_F_ELOG)
953 ELOG_TYPE_DECLARE (el) =
955 .format = "avf[%d] unknown event: event %d severity %d",
956 .format_args = "i4i4i1i1",
964 ed = ELOG_DATA (&vm->elog_main, el);
965 ed->dev_instance = ad->dev_instance;
966 ed->event = e->event;
967 ed->severity = e->severity;
972 vec_reset_length (ad->events);
977 ad->flags |= AVF_DEVICE_F_ERROR;
978 ASSERT (ad->error != 0);
979 vlib_log_err (am->log_class, "%U", format_clib_error, ad->error);
983 avf_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
985 avf_main_t *am = &avf_main;
986 vlib_log_warn (am->log_class, "TODO");
991 avf_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
993 avf_main_t *am = &avf_main;
995 uword *event_data = 0, event_type;
996 int enabled = 0, irq;
997 f64 last_run_duration = 0;
998 f64 last_periodic_time = 0;
1003 vlib_process_wait_for_event_or_clock (vm, 5.0 - last_run_duration);
1005 vlib_process_wait_for_event (vm);
1007 event_type = vlib_process_get_events (vm, &event_data);
1008 vec_reset_length (event_data);
1014 last_periodic_time = vlib_time_now (vm);
1016 case AVF_PROCESS_EVENT_START:
1019 case AVF_PROCESS_EVENT_STOP:
1022 case AVF_PROCESS_EVENT_AQ_INT:
1030 pool_foreach (ad, am->devices,
1032 avf_process_one_device (vm, ad, irq);
1035 last_run_duration = vlib_time_now (vm) - last_periodic_time;
1041 VLIB_REGISTER_NODE (avf_process_node, static) = {
1042 .function = avf_process,
1043 .type = VLIB_NODE_TYPE_PROCESS,
1044 .name = "avf-process",
1049 avf_irq_0_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line)
1051 avf_main_t *am = &avf_main;
1052 uword pd = vlib_pci_get_private_data (vm, h);
1053 avf_device_t *ad = pool_elt_at_index (am->devices, pd);
1056 icr0 = avf_reg_read (ad, AVFINT_ICR0);
1058 if (ad->flags & AVF_DEVICE_F_ELOG)
1061 ELOG_TYPE_DECLARE (el) =
1063 .format = "avf[%d] irq 0: icr0 0x%x",
1064 .format_args = "i4i4",
1073 ed = ELOG_DATA (&vm->elog_main, el);
1074 ed->dev_instance = ad->dev_instance;
1078 avf_irq_0_enable (ad);
1080 /* bit 30 - Send/Receive Admin queue interrupt indication */
1081 if (icr0 & (1 << 30))
1082 vlib_process_signal_event (vm, avf_process_node.index,
1083 AVF_PROCESS_EVENT_AQ_INT, 0);
1087 avf_irq_n_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line)
1089 vnet_main_t *vnm = vnet_get_main ();
1090 avf_main_t *am = &avf_main;
1091 uword pd = vlib_pci_get_private_data (vm, h);
1092 avf_device_t *ad = pool_elt_at_index (am->devices, pd);
1096 if (ad->flags & AVF_DEVICE_F_ELOG)
1099 ELOG_TYPE_DECLARE (el) =
1101 .format = "avf[%d] irq %d: received",
1102 .format_args = "i4i2",
1111 ed = ELOG_DATA (&vm->elog_main, el);
1112 ed->dev_instance = ad->dev_instance;
1117 if (vec_len (ad->rxqs) > qid && ad->rxqs[qid].int_mode != 0)
1118 vnet_device_input_set_interrupt_pending (vnm, ad->hw_if_index, qid);
1119 for (i = 0; i < vec_len (ad->rxqs); i++)
1120 avf_irq_n_enable (ad, i);
1124 avf_delete_if (vlib_main_t * vm, avf_device_t * ad)
1126 vnet_main_t *vnm = vnet_get_main ();
1127 avf_main_t *am = &avf_main;
1130 if (ad->hw_if_index)
1132 vnet_hw_interface_set_flags (vnm, ad->hw_if_index, 0);
1133 vnet_hw_interface_unassign_rx_thread (vnm, ad->hw_if_index, 0);
1134 ethernet_delete_interface (vnm, ad->hw_if_index);
1137 vlib_pci_device_close (vm, ad->pci_dev_handle);
1139 vlib_physmem_free (vm, ad->atq);
1140 vlib_physmem_free (vm, ad->arq);
1141 vlib_physmem_free (vm, ad->atq_bufs);
1142 vlib_physmem_free (vm, ad->arq_bufs);
1145 vec_foreach_index (i, ad->rxqs)
1147 avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, i);
1148 vlib_physmem_free (vm, (void *) rxq->descs);
1149 if (rxq->n_enqueued)
1150 vlib_buffer_free_from_ring (vm, rxq->bufs, rxq->next, rxq->size,
1152 vec_free (rxq->bufs);
1155 vec_free (ad->rxqs);
1158 vec_foreach_index (i, ad->txqs)
1160 avf_txq_t *txq = vec_elt_at_index (ad->txqs, i);
1161 vlib_physmem_free (vm, (void *) txq->descs);
1162 if (txq->n_enqueued)
1164 u16 first = (txq->next - txq->n_enqueued) & (txq->size -1);
1165 vlib_buffer_free_from_ring (vm, txq->bufs, first, txq->size,
1168 vec_free (txq->bufs);
1171 vec_free (ad->txqs);
1173 clib_error_free (ad->error);
1174 clib_memset (ad, 0, sizeof (*ad));
1175 pool_put (am->devices, ad);
1179 avf_create_if (vlib_main_t * vm, avf_create_if_args_t * args)
1181 vnet_main_t *vnm = vnet_get_main ();
1182 avf_main_t *am = &avf_main;
1184 vlib_pci_dev_handle_t h;
1185 clib_error_t *error = 0;
1188 /* check input args */
1189 args->rxq_size = (args->rxq_size == 0) ? AVF_RXQ_SZ : args->rxq_size;
1190 args->txq_size = (args->txq_size == 0) ? AVF_TXQ_SZ : args->txq_size;
1192 if ((args->rxq_size & (args->rxq_size - 1))
1193 || (args->txq_size & (args->txq_size - 1)))
1195 args->rv = VNET_API_ERROR_INVALID_VALUE;
1197 clib_error_return (error, "queue size must be a power of two");
1201 pool_get (am->devices, ad);
1202 ad->dev_instance = ad - am->devices;
1203 ad->per_interface_next_index = ~0;
1205 if (args->enable_elog)
1206 ad->flags |= AVF_DEVICE_F_ELOG;
1208 if ((error = vlib_pci_device_open (vm, &args->addr, avf_pci_device_ids,
1211 pool_put (am->devices, ad);
1212 args->rv = VNET_API_ERROR_INVALID_INTERFACE;
1214 clib_error_return (error, "pci-addr %U", format_vlib_pci_addr,
1218 ad->pci_dev_handle = h;
1220 vlib_pci_set_private_data (vm, h, ad->dev_instance);
1222 if ((error = vlib_pci_bus_master_enable (vm, h)))
1225 if ((error = vlib_pci_map_region (vm, h, 0, &ad->bar0)))
1228 if ((error = vlib_pci_register_msix_handler (vm, h, 0, 1,
1229 &avf_irq_0_handler)))
1232 if ((error = vlib_pci_register_msix_handler (vm, h, 1, 1,
1233 &avf_irq_n_handler)))
1236 if ((error = vlib_pci_enable_msix_irq (vm, h, 0, 2)))
1239 if (!(ad->atq = vlib_physmem_alloc (vm, sizeof (avf_aq_desc_t) *
1242 error = vlib_physmem_last_error (vm);
1246 if ((error = vlib_pci_map_dma (vm, h, ad->atq)))
1249 if (!(ad->arq = vlib_physmem_alloc (vm, sizeof (avf_aq_desc_t) *
1252 error = vlib_physmem_last_error (vm);
1256 if ((error = vlib_pci_map_dma (vm, h, ad->arq)))
1259 if (!(ad->atq_bufs = vlib_physmem_alloc (vm, AVF_MBOX_BUF_SZ *
1262 error = vlib_physmem_last_error (vm);
1266 if ((error = vlib_pci_map_dma (vm, h, ad->atq_bufs)))
1269 if (!(ad->arq_bufs = vlib_physmem_alloc (vm, AVF_MBOX_BUF_SZ *
1272 error = vlib_physmem_last_error (vm);
1276 if ((error = vlib_pci_map_dma (vm, h, ad->arq_bufs)))
1279 if ((error = vlib_pci_intr_enable (vm, h)))
1282 if (vlib_pci_supports_virtual_addr_dma (vm, h))
1283 ad->flags |= AVF_DEVICE_F_VA_DMA;
1285 if ((error = avf_device_init (vm, am, ad, args)))
1288 /* create interface */
1289 error = ethernet_register_interface (vnm, avf_device_class.index,
1290 ad->dev_instance, ad->hwaddr,
1291 &ad->hw_if_index, avf_flag_change);
1296 vnet_sw_interface_t *sw = vnet_get_hw_sw_interface (vnm, ad->hw_if_index);
1297 args->sw_if_index = ad->sw_if_index = sw->sw_if_index;
1299 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, ad->hw_if_index);
1300 hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
1301 vnet_hw_interface_set_input_node (vnm, ad->hw_if_index,
1302 avf_input_node.index);
1304 for (i = 0; i < ad->n_rx_queues; i++)
1305 vnet_hw_interface_assign_rx_thread (vnm, ad->hw_if_index, i, ~0);
1307 if (pool_elts (am->devices) == 1)
1308 vlib_process_signal_event (vm, avf_process_node.index,
1309 AVF_PROCESS_EVENT_START, 0);
1314 avf_delete_if (vm, ad);
1315 args->rv = VNET_API_ERROR_INVALID_INTERFACE;
1316 args->error = clib_error_return (error, "pci-addr %U",
1317 format_vlib_pci_addr, &args->addr);
1318 vlib_log_err (am->log_class, "%U", format_clib_error, args->error);
1321 static clib_error_t *
1322 avf_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
1324 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
1325 avf_main_t *am = &avf_main;
1326 avf_device_t *ad = vec_elt_at_index (am->devices, hi->dev_instance);
1327 uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
1329 if (ad->flags & AVF_DEVICE_F_ERROR)
1330 return clib_error_return (0, "device is in error state");
1334 vnet_hw_interface_set_flags (vnm, ad->hw_if_index,
1335 VNET_HW_INTERFACE_FLAG_LINK_UP);
1336 ad->flags |= AVF_DEVICE_F_ADMIN_UP;
1340 vnet_hw_interface_set_flags (vnm, ad->hw_if_index, 0);
1341 ad->flags &= ~AVF_DEVICE_F_ADMIN_UP;
1346 static clib_error_t *
1347 avf_interface_rx_mode_change (vnet_main_t * vnm, u32 hw_if_index, u32 qid,
1348 vnet_hw_interface_rx_mode mode)
1350 avf_main_t *am = &avf_main;
1351 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
1352 avf_device_t *ad = pool_elt_at_index (am->devices, hw->dev_instance);
1353 avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, qid);
1355 if (mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
1364 avf_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index,
1367 avf_main_t *am = &avf_main;
1368 vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
1369 avf_device_t *ad = pool_elt_at_index (am->devices, hw->dev_instance);
1371 /* Shut off redirection */
1372 if (node_index == ~0)
1374 ad->per_interface_next_index = node_index;
1378 ad->per_interface_next_index =
1379 vlib_node_add_next (vlib_get_main (), avf_input_node.index, node_index);
1382 static char *avf_tx_func_error_strings[] = {
1384 foreach_avf_tx_func_error
1389 VNET_DEVICE_CLASS (avf_device_class,) =
1391 .name = "Adaptive Virtual Function (AVF) interface",
1392 .format_device = format_avf_device,
1393 .format_device_name = format_avf_device_name,
1394 .admin_up_down_function = avf_interface_admin_up_down,
1395 .rx_mode_change_function = avf_interface_rx_mode_change,
1396 .rx_redirect_to_node = avf_set_interface_next_node,
1397 .tx_function_n_errors = AVF_TX_N_ERROR,
1398 .tx_function_error_strings = avf_tx_func_error_strings,
1403 avf_init (vlib_main_t * vm)
1405 avf_main_t *am = &avf_main;
1406 clib_error_t *error;
1407 vlib_thread_main_t *tm = vlib_get_thread_main ();
1410 if ((error = vlib_call_init_function (vm, pci_bus_init)))
1413 vec_validate_aligned (am->per_thread_data, tm->n_vlib_mains - 1,
1414 CLIB_CACHE_LINE_BYTES);
1416 /* initialize ptype based loopup table */
1417 vec_validate_aligned (am->ptypes, 255, CLIB_CACHE_LINE_BYTES);
1420 vec_foreach_index (i, am->ptypes)
1422 avf_ptype_t *p = vec_elt_at_index (am->ptypes, i);
1423 if ((i >= 22) && (i <= 87))
1425 p->next_node = VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT;
1426 p->flags = VNET_BUFFER_F_IS_IP4;
1428 else if ((i >= 88) && (i <= 153))
1430 p->next_node = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
1431 p->flags = VNET_BUFFER_F_IS_IP6;
1434 p->next_node = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
1435 p->buffer_advance = device_input_next_node_advance[p->next_node];
1436 p->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
1440 am->log_class = vlib_log_register_class ("avf_plugin", 0);
1441 vlib_log_debug (am->log_class, "initialized");
1446 VLIB_INIT_FUNCTION (avf_init);
1449 * fd.io coding-style-patch-verification: ON
1452 * eval: (c-set-style "gnu")