net/enic: put Tx and Rx functions into same file
[dpdk.git] / drivers / net / enic / enic_main.c
1 /*
2  * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4  *
5  * Copyright (c) 2014, Cisco Systems, Inc.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  *
33  */
34
35 #include <stdio.h>
36
37 #include <sys/stat.h>
38 #include <sys/mman.h>
39 #include <fcntl.h>
40 #include <libgen.h>
41
42 #include <rte_pci.h>
43 #include <rte_memzone.h>
44 #include <rte_malloc.h>
45 #include <rte_mbuf.h>
46 #include <rte_string_fns.h>
47 #include <rte_ethdev.h>
48
49 #include "enic_compat.h"
50 #include "enic.h"
51 #include "wq_enet_desc.h"
52 #include "rq_enet_desc.h"
53 #include "cq_enet_desc.h"
54 #include "vnic_enet.h"
55 #include "vnic_dev.h"
56 #include "vnic_wq.h"
57 #include "vnic_rq.h"
58 #include "vnic_cq.h"
59 #include "vnic_intr.h"
60 #include "vnic_nic.h"
61
62 static inline int enic_is_sriov_vf(struct enic *enic)
63 {
64         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
65 }
66
67 static int is_zero_addr(uint8_t *addr)
68 {
69         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
70 }
71
72 static int is_mcast_addr(uint8_t *addr)
73 {
74         return addr[0] & 1;
75 }
76
77 static int is_eth_addr_valid(uint8_t *addr)
78 {
79         return !is_mcast_addr(addr) && !is_zero_addr(addr);
80 }
81
82 static void
83 enic_rxmbuf_queue_release(struct enic *enic, struct vnic_rq *rq)
84 {
85         uint16_t i;
86
87         if (!rq || !rq->mbuf_ring) {
88                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
89                 return;
90         }
91
92         for (i = 0; i < enic->config.rq_desc_count; i++) {
93                 if (rq->mbuf_ring[i]) {
94                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
95                         rq->mbuf_ring[i] = NULL;
96                 }
97         }
98 }
99
100
101 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
102 {
103         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
104 }
105
106 void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
107 {
108         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf;
109
110         rte_mempool_put(mbuf->pool, mbuf);
111         buf->os_buf = NULL;
112 }
113
114 static void enic_log_q_error(struct enic *enic)
115 {
116         unsigned int i;
117         u32 error_status;
118
119         for (i = 0; i < enic->wq_count; i++) {
120                 error_status = vnic_wq_error_status(&enic->wq[i]);
121                 if (error_status)
122                         dev_err(enic, "WQ[%d] error_status %d\n", i,
123                                 error_status);
124         }
125
126         for (i = 0; i < enic->rq_count; i++) {
127                 error_status = vnic_rq_error_status(&enic->rq[i]);
128                 if (error_status)
129                         dev_err(enic, "RQ[%d] error_status %d\n", i,
130                                 error_status);
131         }
132 }
133
134 static void enic_clear_soft_stats(struct enic *enic)
135 {
136         struct enic_soft_stats *soft_stats = &enic->soft_stats;
137         rte_atomic64_clear(&soft_stats->rx_nombuf);
138         rte_atomic64_clear(&soft_stats->rx_packet_errors);
139 }
140
141 static void enic_init_soft_stats(struct enic *enic)
142 {
143         struct enic_soft_stats *soft_stats = &enic->soft_stats;
144         rte_atomic64_init(&soft_stats->rx_nombuf);
145         rte_atomic64_init(&soft_stats->rx_packet_errors);
146         enic_clear_soft_stats(enic);
147 }
148
149 void enic_dev_stats_clear(struct enic *enic)
150 {
151         if (vnic_dev_stats_clear(enic->vdev))
152                 dev_err(enic, "Error in clearing stats\n");
153         enic_clear_soft_stats(enic);
154 }
155
156 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
157 {
158         struct vnic_stats *stats;
159         struct enic_soft_stats *soft_stats = &enic->soft_stats;
160         int64_t rx_truncated;
161         uint64_t rx_packet_errors;
162
163         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
164                 dev_err(enic, "Error in getting stats\n");
165                 return;
166         }
167
168         /* The number of truncated packets can only be calculated by
169          * subtracting a hardware counter from error packets received by
170          * the driver. Note: this causes transient inaccuracies in the
171          * ipackets count. Also, the length of truncated packets are
172          * counted in ibytes even though truncated packets are dropped
173          * which can make ibytes be slightly higher than it should be.
174          */
175         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
176         rx_truncated = rx_packet_errors - stats->rx.rx_errors;
177
178         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
179         r_stats->opackets = stats->tx.tx_frames_ok;
180
181         r_stats->ibytes = stats->rx.rx_bytes_ok;
182         r_stats->obytes = stats->tx.tx_bytes_ok;
183
184         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
185         r_stats->oerrors = stats->tx.tx_errors;
186
187         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
188
189         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
190 }
191
192 void enic_del_mac_address(struct enic *enic)
193 {
194         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
195                 dev_err(enic, "del mac addr failed\n");
196 }
197
198 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
199 {
200         int err;
201
202         if (!is_eth_addr_valid(mac_addr)) {
203                 dev_err(enic, "invalid mac address\n");
204                 return;
205         }
206
207         err = vnic_dev_del_addr(enic->vdev, mac_addr);
208         if (err) {
209                 dev_err(enic, "del mac addr failed\n");
210                 return;
211         }
212
213         ether_addr_copy((struct ether_addr *)mac_addr,
214                 (struct ether_addr *)enic->mac_addr);
215
216         err = vnic_dev_add_addr(enic->vdev, mac_addr);
217         if (err) {
218                 dev_err(enic, "add mac addr failed\n");
219                 return;
220         }
221 }
222
223 static void
224 enic_free_rq_buf(struct rte_mbuf **mbuf)
225 {
226         if (*mbuf == NULL)
227                 return;
228
229         rte_pktmbuf_free(*mbuf);
230         mbuf = NULL;
231 }
232
233 void enic_init_vnic_resources(struct enic *enic)
234 {
235         unsigned int error_interrupt_enable = 1;
236         unsigned int error_interrupt_offset = 0;
237         unsigned int index = 0;
238
239         for (index = 0; index < enic->rq_count; index++) {
240                 vnic_rq_init(&enic->rq[index],
241                         enic_cq_rq(enic, index),
242                         error_interrupt_enable,
243                         error_interrupt_offset);
244         }
245
246         for (index = 0; index < enic->wq_count; index++) {
247                 vnic_wq_init(&enic->wq[index],
248                         enic_cq_wq(enic, index),
249                         error_interrupt_enable,
250                         error_interrupt_offset);
251         }
252
253         vnic_dev_stats_clear(enic->vdev);
254
255         for (index = 0; index < enic->cq_count; index++) {
256                 vnic_cq_init(&enic->cq[index],
257                         0 /* flow_control_enable */,
258                         1 /* color_enable */,
259                         0 /* cq_head */,
260                         0 /* cq_tail */,
261                         1 /* cq_tail_color */,
262                         0 /* interrupt_enable */,
263                         1 /* cq_entry_enable */,
264                         0 /* cq_message_enable */,
265                         0 /* interrupt offset */,
266                         0 /* cq_message_addr */);
267         }
268
269         vnic_intr_init(&enic->intr,
270                 enic->config.intr_timer_usec,
271                 enic->config.intr_timer_type,
272                 /*mask_on_assertion*/1);
273 }
274
275
276 static int
277 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
278 {
279         struct rte_mbuf *mb;
280         struct rq_enet_desc *rqd = rq->ring.descs;
281         unsigned i;
282         dma_addr_t dma_addr;
283
284         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
285                   rq->ring.desc_count);
286
287         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
288                 mb = rte_mbuf_raw_alloc(rq->mp);
289                 if (mb == NULL) {
290                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
291                         (unsigned)rq->index);
292                         return -ENOMEM;
293                 }
294
295                 dma_addr = (dma_addr_t)(mb->buf_physaddr
296                            + RTE_PKTMBUF_HEADROOM);
297
298                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
299                                  mb->buf_len - RTE_PKTMBUF_HEADROOM);
300                 rq->mbuf_ring[i] = mb;
301         }
302
303         /* make sure all prior writes are complete before doing the PIO write */
304         rte_rmb();
305
306         /* Post all but the last 2 cache lines' worth of descriptors */
307         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
308                         / sizeof(struct rq_enet_desc));
309         rq->rx_nb_hold = 0;
310
311         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
312                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
313         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
314         rte_rmb();
315
316         return 0;
317
318 }
319
320 static void *
321 enic_alloc_consistent(__rte_unused void *priv, size_t size,
322         dma_addr_t *dma_handle, u8 *name)
323 {
324         void *vaddr;
325         const struct rte_memzone *rz;
326         *dma_handle = 0;
327
328         rz = rte_memzone_reserve_aligned((const char *)name,
329                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
330         if (!rz) {
331                 pr_err("%s : Failed to allocate memory requested for %s\n",
332                         __func__, name);
333                 return NULL;
334         }
335
336         vaddr = rz->addr;
337         *dma_handle = (dma_addr_t)rz->phys_addr;
338
339         return vaddr;
340 }
341
342 static void
343 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
344         __rte_unused size_t size,
345         __rte_unused void *vaddr,
346         __rte_unused dma_addr_t dma_handle)
347 {
348         /* Nothing to be done */
349 }
350
351 static void
352 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
353         void *arg)
354 {
355         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
356
357         vnic_intr_return_all_credits(&enic->intr);
358
359         enic_log_q_error(enic);
360 }
361
362 int enic_enable(struct enic *enic)
363 {
364         unsigned int index;
365         int err;
366         struct rte_eth_dev *eth_dev = enic->rte_dev;
367
368         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
369         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
370         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
371
372         if (enic_clsf_init(enic))
373                 dev_warning(enic, "Init of hash table for clsf failed."\
374                         "Flow director feature will not work\n");
375
376         for (index = 0; index < enic->rq_count; index++) {
377                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
378                 if (err) {
379                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
380                         return err;
381                 }
382         }
383
384         for (index = 0; index < enic->wq_count; index++)
385                 vnic_wq_enable(&enic->wq[index]);
386         for (index = 0; index < enic->rq_count; index++)
387                 vnic_rq_enable(&enic->rq[index]);
388
389         vnic_dev_enable_wait(enic->vdev);
390
391         /* Register and enable error interrupt */
392         rte_intr_callback_register(&(enic->pdev->intr_handle),
393                 enic_intr_handler, (void *)enic->rte_dev);
394
395         rte_intr_enable(&(enic->pdev->intr_handle));
396         vnic_intr_unmask(&enic->intr);
397
398         return 0;
399 }
400
401 int enic_alloc_intr_resources(struct enic *enic)
402 {
403         int err;
404
405         dev_info(enic, "vNIC resources used:  "\
406                 "wq %d rq %d cq %d intr %d\n",
407                 enic->wq_count, enic->rq_count,
408                 enic->cq_count, enic->intr_count);
409
410         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
411         if (err)
412                 enic_free_vnic_resources(enic);
413
414         return err;
415 }
416
417 void enic_free_rq(void *rxq)
418 {
419         struct vnic_rq *rq = (struct vnic_rq *)rxq;
420         struct enic *enic = vnic_dev_priv(rq->vdev);
421
422         enic_rxmbuf_queue_release(enic, rq);
423         rte_free(rq->mbuf_ring);
424         rq->mbuf_ring = NULL;
425         vnic_rq_free(rq);
426         vnic_cq_free(&enic->cq[rq->index]);
427 }
428
429 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
430 {
431         vnic_wq_enable(&enic->wq[queue_idx]);
432 }
433
434 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
435 {
436         return vnic_wq_disable(&enic->wq[queue_idx]);
437 }
438
439 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
440 {
441         vnic_rq_enable(&enic->rq[queue_idx]);
442 }
443
444 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
445 {
446         return vnic_rq_disable(&enic->rq[queue_idx]);
447 }
448
449 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
450         unsigned int socket_id, struct rte_mempool *mp,
451         uint16_t nb_desc)
452 {
453         int rc;
454         struct vnic_rq *rq = &enic->rq[queue_idx];
455
456         rq->socket_id = socket_id;
457         rq->mp = mp;
458
459         if (nb_desc) {
460                 if (nb_desc > enic->config.rq_desc_count) {
461                         dev_warning(enic,
462                                 "RQ %d - number of rx desc in cmd line (%d)"\
463                                 "is greater than that in the UCSM/CIMC adapter"\
464                                 "policy.  Applying the value in the adapter "\
465                                 "policy (%d).\n",
466                                 queue_idx, nb_desc, enic->config.rq_desc_count);
467                         nb_desc = enic->config.rq_desc_count;
468                 }
469                 dev_info(enic, "RX Queues - effective number of descs:%d\n",
470                          nb_desc);
471         }
472
473         /* Allocate queue resources */
474         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
475                 nb_desc, sizeof(struct rq_enet_desc));
476         if (rc) {
477                 dev_err(enic, "error in allocation of rq\n");
478                 goto err_exit;
479         }
480
481         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
482                 socket_id, nb_desc,
483                 sizeof(struct cq_enet_rq_desc));
484         if (rc) {
485                 dev_err(enic, "error in allocation of cq for rq\n");
486                 goto err_free_rq_exit;
487         }
488
489         /* Allocate the mbuf ring */
490         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
491                         sizeof(struct rte_mbuf *) * nb_desc,
492                         RTE_CACHE_LINE_SIZE, rq->socket_id);
493
494         if (rq->mbuf_ring != NULL)
495                 return 0;
496
497         /* cleanup on error */
498         vnic_cq_free(&enic->cq[queue_idx]);
499 err_free_rq_exit:
500         vnic_rq_free(rq);
501 err_exit:
502         return -ENOMEM;
503 }
504
505 void enic_free_wq(void *txq)
506 {
507         struct vnic_wq *wq = (struct vnic_wq *)txq;
508         struct enic *enic = vnic_dev_priv(wq->vdev);
509
510         vnic_wq_free(wq);
511         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
512 }
513
514 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
515         unsigned int socket_id, uint16_t nb_desc)
516 {
517         int err;
518         struct vnic_wq *wq = &enic->wq[queue_idx];
519         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
520
521         wq->socket_id = socket_id;
522         if (nb_desc) {
523                 if (nb_desc > enic->config.wq_desc_count) {
524                         dev_warning(enic,
525                                 "WQ %d - number of tx desc in cmd line (%d)"\
526                                 "is greater than that in the UCSM/CIMC adapter"\
527                                 "policy.  Applying the value in the adapter "\
528                                 "policy (%d)\n",
529                                 queue_idx, nb_desc, enic->config.wq_desc_count);
530                 } else if (nb_desc != enic->config.wq_desc_count) {
531                         enic->config.wq_desc_count = nb_desc;
532                         dev_info(enic,
533                                 "TX Queues - effective number of descs:%d\n",
534                                 nb_desc);
535                 }
536         }
537
538         /* Allocate queue resources */
539         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
540                 enic->config.wq_desc_count,
541                 sizeof(struct wq_enet_desc));
542         if (err) {
543                 dev_err(enic, "error in allocation of wq\n");
544                 return err;
545         }
546
547         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
548                 socket_id, enic->config.wq_desc_count,
549                 sizeof(struct cq_enet_wq_desc));
550         if (err) {
551                 vnic_wq_free(wq);
552                 dev_err(enic, "error in allocation of cq for wq\n");
553         }
554
555         return err;
556 }
557
558 int enic_disable(struct enic *enic)
559 {
560         unsigned int i;
561         int err;
562
563         vnic_intr_mask(&enic->intr);
564         (void)vnic_intr_masked(&enic->intr); /* flush write */
565
566         vnic_dev_disable(enic->vdev);
567
568         enic_clsf_destroy(enic);
569
570         if (!enic_is_sriov_vf(enic))
571                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
572
573         for (i = 0; i < enic->wq_count; i++) {
574                 err = vnic_wq_disable(&enic->wq[i]);
575                 if (err)
576                         return err;
577         }
578         for (i = 0; i < enic->rq_count; i++) {
579                 err = vnic_rq_disable(&enic->rq[i]);
580                 if (err)
581                         return err;
582         }
583
584         vnic_dev_set_reset_flag(enic->vdev, 1);
585         vnic_dev_notify_unset(enic->vdev);
586
587         for (i = 0; i < enic->wq_count; i++)
588                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
589
590         for (i = 0; i < enic->rq_count; i++)
591                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
592         for (i = 0; i < enic->cq_count; i++)
593                 vnic_cq_clean(&enic->cq[i]);
594         vnic_intr_clean(&enic->intr);
595
596         return 0;
597 }
598
599 static int enic_dev_wait(struct vnic_dev *vdev,
600         int (*start)(struct vnic_dev *, int),
601         int (*finished)(struct vnic_dev *, int *),
602         int arg)
603 {
604         int done;
605         int err;
606         int i;
607
608         err = start(vdev, arg);
609         if (err)
610                 return err;
611
612         /* Wait for func to complete...2 seconds max */
613         for (i = 0; i < 2000; i++) {
614                 err = finished(vdev, &done);
615                 if (err)
616                         return err;
617                 if (done)
618                         return 0;
619                 usleep(1000);
620         }
621         return -ETIMEDOUT;
622 }
623
624 static int enic_dev_open(struct enic *enic)
625 {
626         int err;
627
628         err = enic_dev_wait(enic->vdev, vnic_dev_open,
629                 vnic_dev_open_done, 0);
630         if (err)
631                 dev_err(enic_get_dev(enic),
632                         "vNIC device open failed, err %d\n", err);
633
634         return err;
635 }
636
637 static int enic_set_rsskey(struct enic *enic)
638 {
639         dma_addr_t rss_key_buf_pa;
640         union vnic_rss_key *rss_key_buf_va = NULL;
641         static union vnic_rss_key rss_key = {
642                 .key = {
643                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
644                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
645                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
646                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
647                 }
648         };
649         int err;
650         u8 name[NAME_MAX];
651
652         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
653         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
654                 &rss_key_buf_pa, name);
655         if (!rss_key_buf_va)
656                 return -ENOMEM;
657
658         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
659
660         err = enic_set_rss_key(enic,
661                 rss_key_buf_pa,
662                 sizeof(union vnic_rss_key));
663
664         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
665                 rss_key_buf_va, rss_key_buf_pa);
666
667         return err;
668 }
669
670 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
671 {
672         dma_addr_t rss_cpu_buf_pa;
673         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
674         int i;
675         int err;
676         u8 name[NAME_MAX];
677
678         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
679         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
680                 &rss_cpu_buf_pa, name);
681         if (!rss_cpu_buf_va)
682                 return -ENOMEM;
683
684         for (i = 0; i < (1 << rss_hash_bits); i++)
685                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
686
687         err = enic_set_rss_cpu(enic,
688                 rss_cpu_buf_pa,
689                 sizeof(union vnic_rss_cpu));
690
691         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
692                 rss_cpu_buf_va, rss_cpu_buf_pa);
693
694         return err;
695 }
696
697 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
698         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
699 {
700         const u8 tso_ipid_split_en = 0;
701         int err;
702
703         /* Enable VLAN tag stripping */
704
705         err = enic_set_nic_cfg(enic,
706                 rss_default_cpu, rss_hash_type,
707                 rss_hash_bits, rss_base_cpu,
708                 rss_enable, tso_ipid_split_en,
709                 enic->ig_vlan_strip_en);
710
711         return err;
712 }
713
714 int enic_set_rss_nic_cfg(struct enic *enic)
715 {
716         const u8 rss_default_cpu = 0;
717         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
718             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
719             NIC_CFG_RSS_HASH_TYPE_IPV6 |
720             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
721         const u8 rss_hash_bits = 7;
722         const u8 rss_base_cpu = 0;
723         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
724
725         if (rss_enable) {
726                 if (!enic_set_rsskey(enic)) {
727                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
728                                 rss_enable = 0;
729                                 dev_warning(enic, "RSS disabled, "\
730                                         "Failed to set RSS cpu indirection table.");
731                         }
732                 } else {
733                         rss_enable = 0;
734                         dev_warning(enic,
735                                 "RSS disabled, Failed to set RSS key.\n");
736                 }
737         }
738
739         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
740                 rss_hash_bits, rss_base_cpu, rss_enable);
741 }
742
743 int enic_setup_finish(struct enic *enic)
744 {
745         int ret;
746
747         enic_init_soft_stats(enic);
748
749         ret = enic_set_rss_nic_cfg(enic);
750         if (ret) {
751                 dev_err(enic, "Failed to config nic, aborting.\n");
752                 return -1;
753         }
754
755         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
756
757         /* Default conf */
758         vnic_dev_packet_filter(enic->vdev,
759                 1 /* directed  */,
760                 1 /* multicast */,
761                 1 /* broadcast */,
762                 0 /* promisc   */,
763                 1 /* allmulti  */);
764
765         enic->promisc = 0;
766         enic->allmulti = 1;
767
768         return 0;
769 }
770
771 void enic_add_packet_filter(struct enic *enic)
772 {
773         /* Args -> directed, multicast, broadcast, promisc, allmulti */
774         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
775                 enic->promisc, enic->allmulti);
776 }
777
778 int enic_get_link_status(struct enic *enic)
779 {
780         return vnic_dev_link_status(enic->vdev);
781 }
782
783 static void enic_dev_deinit(struct enic *enic)
784 {
785         struct rte_eth_dev *eth_dev = enic->rte_dev;
786
787         rte_free(eth_dev->data->mac_addrs);
788 }
789
790
791 int enic_set_vnic_res(struct enic *enic)
792 {
793         struct rte_eth_dev *eth_dev = enic->rte_dev;
794
795         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
796                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
797                 dev_err(dev, "Not enough resources configured, aborting\n");
798                 return -1;
799         }
800
801         enic->rq_count = eth_dev->data->nb_rx_queues;
802         enic->wq_count = eth_dev->data->nb_tx_queues;
803         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
804                 dev_err(dev, "Not enough resources configured, aborting\n");
805                 return -1;
806         }
807
808         enic->cq_count = enic->rq_count + enic->wq_count;
809         return 0;
810 }
811
812 static int enic_dev_init(struct enic *enic)
813 {
814         int err;
815         struct rte_eth_dev *eth_dev = enic->rte_dev;
816
817         vnic_dev_intr_coal_timer_info_default(enic->vdev);
818
819         /* Get vNIC configuration
820         */
821         err = enic_get_vnic_config(enic);
822         if (err) {
823                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
824                 return err;
825         }
826
827         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
828         if (!eth_dev->data->mac_addrs) {
829                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
830                 return -1;
831         }
832         ether_addr_copy((struct ether_addr *) enic->mac_addr,
833                 &eth_dev->data->mac_addrs[0]);
834
835
836         /* Get available resource counts
837         */
838         enic_get_res_counts(enic);
839
840         vnic_dev_set_reset_flag(enic->vdev, 0);
841
842         return 0;
843
844 }
845
846 int enic_probe(struct enic *enic)
847 {
848         struct rte_pci_device *pdev = enic->pdev;
849         int err = -1;
850
851         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
852
853         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
854         enic->bar0.len = pdev->mem_resource[0].len;
855
856         /* Register vNIC device */
857         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
858         if (!enic->vdev) {
859                 dev_err(enic, "vNIC registration failed, aborting\n");
860                 goto err_out;
861         }
862
863         vnic_register_cbacks(enic->vdev,
864                 enic_alloc_consistent,
865                 enic_free_consistent);
866
867         /* Issue device open to get device in known state */
868         err = enic_dev_open(enic);
869         if (err) {
870                 dev_err(enic, "vNIC dev open failed, aborting\n");
871                 goto err_out_unregister;
872         }
873
874         /* Set ingress vlan rewrite mode before vnic initialization */
875         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
876                 IG_VLAN_REWRITE_MODE_PASS_THRU);
877         if (err) {
878                 dev_err(enic,
879                         "Failed to set ingress vlan rewrite mode, aborting.\n");
880                 goto err_out_dev_close;
881         }
882
883         /* Issue device init to initialize the vnic-to-switch link.
884          * We'll start with carrier off and wait for link UP
885          * notification later to turn on carrier.  We don't need
886          * to wait here for the vnic-to-switch link initialization
887          * to complete; link UP notification is the indication that
888          * the process is complete.
889          */
890
891         err = vnic_dev_init(enic->vdev, 0);
892         if (err) {
893                 dev_err(enic, "vNIC dev init failed, aborting\n");
894                 goto err_out_dev_close;
895         }
896
897         err = enic_dev_init(enic);
898         if (err) {
899                 dev_err(enic, "Device initialization failed, aborting\n");
900                 goto err_out_dev_close;
901         }
902
903         return 0;
904
905 err_out_dev_close:
906         vnic_dev_close(enic->vdev);
907 err_out_unregister:
908         vnic_dev_unregister(enic->vdev);
909 err_out:
910         return err;
911 }
912
913 void enic_remove(struct enic *enic)
914 {
915         enic_dev_deinit(enic);
916         vnic_dev_close(enic->vdev);
917         vnic_dev_unregister(enic->vdev);
918 }