9fff020e3af34c4be71e77b9ec8b9b382aebbe40
[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 #include "enic_vnic_wq.h"
62
63 static inline struct rte_mbuf *
64 rte_rxmbuf_alloc(struct rte_mempool *mp)
65 {
66         struct rte_mbuf *m;
67
68         m = __rte_mbuf_raw_alloc(mp);
69         __rte_mbuf_sanity_check_raw(m, 0);
70         return m;
71 }
72
73
74 static inline int enic_is_sriov_vf(struct enic *enic)
75 {
76         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
77 }
78
79 static int is_zero_addr(uint8_t *addr)
80 {
81         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
82 }
83
84 static int is_mcast_addr(uint8_t *addr)
85 {
86         return addr[0] & 1;
87 }
88
89 static int is_eth_addr_valid(uint8_t *addr)
90 {
91         return !is_mcast_addr(addr) && !is_zero_addr(addr);
92 }
93
94 static void
95 enic_rxmbuf_queue_release(struct enic *enic, struct vnic_rq *rq)
96 {
97         uint16_t i;
98
99         if (!rq || !rq->mbuf_ring) {
100                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
101                 return;
102         }
103
104         for (i = 0; i < enic->config.rq_desc_count; i++) {
105                 if (rq->mbuf_ring[i]) {
106                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
107                         rq->mbuf_ring[i] = NULL;
108                 }
109         }
110 }
111
112
113 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
114 {
115         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
116 }
117
118 static void enic_free_wq_buf(__rte_unused struct vnic_wq *wq, struct vnic_wq_buf *buf)
119 {
120         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->os_buf;
121
122         rte_mempool_put(mbuf->pool, mbuf);
123         buf->os_buf = NULL;
124 }
125
126 static void enic_wq_free_buf(struct vnic_wq *wq,
127         __rte_unused struct cq_desc *cq_desc,
128         struct vnic_wq_buf *buf,
129         __rte_unused void *opaque)
130 {
131         enic_free_wq_buf(wq, buf);
132 }
133
134 static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
135         __rte_unused u8 type, u16 q_number, u16 completed_index, void *opaque)
136 {
137         struct enic *enic = vnic_dev_priv(vdev);
138
139         vnic_wq_service(&enic->wq[q_number], cq_desc,
140                 completed_index, enic_wq_free_buf,
141                 opaque);
142
143         return 0;
144 }
145
146 static void enic_log_q_error(struct enic *enic)
147 {
148         unsigned int i;
149         u32 error_status;
150
151         for (i = 0; i < enic->wq_count; i++) {
152                 error_status = vnic_wq_error_status(&enic->wq[i]);
153                 if (error_status)
154                         dev_err(enic, "WQ[%d] error_status %d\n", i,
155                                 error_status);
156         }
157
158         for (i = 0; i < enic->rq_count; i++) {
159                 error_status = vnic_rq_error_status(&enic->rq[i]);
160                 if (error_status)
161                         dev_err(enic, "RQ[%d] error_status %d\n", i,
162                                 error_status);
163         }
164 }
165
166 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq)
167 {
168         unsigned int cq = enic_cq_wq(enic, wq->index);
169
170         /* Return the work done */
171         return vnic_cq_service(&enic->cq[cq],
172                 -1 /*wq_work_to_do*/, enic_wq_service, NULL);
173 }
174
175 void enic_post_wq_index(struct vnic_wq *wq)
176 {
177         enic_vnic_post_wq_index(wq);
178 }
179
180 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
181                    struct rte_mbuf *tx_pkt, unsigned short len,
182                    uint8_t sop, uint8_t eop, uint8_t cq_entry,
183                    uint16_t ol_flags, uint16_t vlan_tag)
184 {
185         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
186         uint16_t mss = 0;
187         uint8_t vlan_tag_insert = 0;
188         uint64_t bus_addr = (dma_addr_t)
189             (tx_pkt->buf_physaddr + tx_pkt->data_off);
190
191         if (sop) {
192                 if (ol_flags & PKT_TX_VLAN_PKT)
193                         vlan_tag_insert = 1;
194
195                 if (enic->hw_ip_checksum) {
196                         if (ol_flags & PKT_TX_IP_CKSUM)
197                                 mss |= ENIC_CALC_IP_CKSUM;
198
199                         if (ol_flags & PKT_TX_TCP_UDP_CKSUM)
200                                 mss |= ENIC_CALC_TCP_UDP_CKSUM;
201                 }
202         }
203
204         wq_enet_desc_enc(desc,
205                 bus_addr,
206                 len,
207                 mss,
208                 0 /* header_length */,
209                 0 /* offload_mode WQ_ENET_OFFLOAD_MODE_CSUM */,
210                 eop,
211                 cq_entry,
212                 0 /* fcoe_encap */,
213                 vlan_tag_insert,
214                 vlan_tag,
215                 0 /* loopback */);
216
217         enic_vnic_post_wq(wq, (void *)tx_pkt, bus_addr, len,
218                           sop,
219                           1 /*desc_skip_cnt*/,
220                           cq_entry,
221                           0 /*compressed send*/,
222                           0 /*wrid*/);
223 }
224
225 void enic_dev_stats_clear(struct enic *enic)
226 {
227         if (vnic_dev_stats_clear(enic->vdev))
228                 dev_err(enic, "Error in clearing stats\n");
229 }
230
231 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
232 {
233         struct vnic_stats *stats;
234
235         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
236                 dev_err(enic, "Error in getting stats\n");
237                 return;
238         }
239
240         r_stats->ipackets = stats->rx.rx_frames_ok;
241         r_stats->opackets = stats->tx.tx_frames_ok;
242
243         r_stats->ibytes = stats->rx.rx_bytes_ok;
244         r_stats->obytes = stats->tx.tx_bytes_ok;
245
246         r_stats->ierrors = stats->rx.rx_errors;
247         r_stats->oerrors = stats->tx.tx_errors;
248
249         r_stats->imcasts = stats->rx.rx_multicast_frames_ok;
250         r_stats->rx_nombuf = stats->rx.rx_no_bufs;
251 }
252
253 void enic_del_mac_address(struct enic *enic)
254 {
255         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
256                 dev_err(enic, "del mac addr failed\n");
257 }
258
259 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
260 {
261         int err;
262
263         if (!is_eth_addr_valid(mac_addr)) {
264                 dev_err(enic, "invalid mac address\n");
265                 return;
266         }
267
268         err = vnic_dev_del_addr(enic->vdev, mac_addr);
269         if (err) {
270                 dev_err(enic, "del mac addr failed\n");
271                 return;
272         }
273
274         ether_addr_copy((struct ether_addr *)mac_addr,
275                 (struct ether_addr *)enic->mac_addr);
276
277         err = vnic_dev_add_addr(enic->vdev, mac_addr);
278         if (err) {
279                 dev_err(enic, "add mac addr failed\n");
280                 return;
281         }
282 }
283
284 static void
285 enic_free_rq_buf(struct rte_mbuf **mbuf)
286 {
287         if (*mbuf == NULL)
288                 return;
289
290         rte_pktmbuf_free(*mbuf);
291         mbuf = NULL;
292 }
293
294 void enic_init_vnic_resources(struct enic *enic)
295 {
296         unsigned int error_interrupt_enable = 1;
297         unsigned int error_interrupt_offset = 0;
298         unsigned int index = 0;
299
300         for (index = 0; index < enic->rq_count; index++) {
301                 vnic_rq_init(&enic->rq[index],
302                         enic_cq_rq(enic, index),
303                         error_interrupt_enable,
304                         error_interrupt_offset);
305         }
306
307         for (index = 0; index < enic->wq_count; index++) {
308                 vnic_wq_init(&enic->wq[index],
309                         enic_cq_wq(enic, index),
310                         error_interrupt_enable,
311                         error_interrupt_offset);
312         }
313
314         vnic_dev_stats_clear(enic->vdev);
315
316         for (index = 0; index < enic->cq_count; index++) {
317                 vnic_cq_init(&enic->cq[index],
318                         0 /* flow_control_enable */,
319                         1 /* color_enable */,
320                         0 /* cq_head */,
321                         0 /* cq_tail */,
322                         1 /* cq_tail_color */,
323                         0 /* interrupt_enable */,
324                         1 /* cq_entry_enable */,
325                         0 /* cq_message_enable */,
326                         0 /* interrupt offset */,
327                         0 /* cq_message_addr */);
328         }
329
330         vnic_intr_init(&enic->intr,
331                 enic->config.intr_timer_usec,
332                 enic->config.intr_timer_type,
333                 /*mask_on_assertion*/1);
334 }
335
336
337 static int
338 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
339 {
340         struct rte_mbuf *mb;
341         struct rq_enet_desc *rqd = rq->ring.descs;
342         unsigned i;
343         dma_addr_t dma_addr;
344
345         dev_debug(enic, "queue %u, allocating %u rx queue mbufs", rq->index,
346                   rq->ring.desc_count);
347
348         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
349                 mb = rte_rxmbuf_alloc(rq->mp);
350                 if (mb == NULL) {
351                         dev_err(enic, "RX mbuf alloc failed queue_id=%u",
352                         (unsigned)rq->index);
353                         return -ENOMEM;
354                 }
355
356                 dma_addr = (dma_addr_t)(mb->buf_physaddr + mb->data_off);
357
358                 rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
359                                  mb->buf_len);
360                 rq->mbuf_ring[i] = mb;
361         }
362
363         /* make sure all prior writes are complete before doing the PIO write */
364         rte_rmb();
365
366         /* Post all but the last 2 cache lines' worth of descriptors */
367         rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
368                         / sizeof(struct rq_enet_desc));
369         rq->rx_nb_hold = 0;
370
371         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
372                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
373         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
374         rte_rmb();
375
376         return 0;
377
378 }
379
380 static void *
381 enic_alloc_consistent(__rte_unused void *priv, size_t size,
382         dma_addr_t *dma_handle, u8 *name)
383 {
384         void *vaddr;
385         const struct rte_memzone *rz;
386         *dma_handle = 0;
387
388         rz = rte_memzone_reserve_aligned((const char *)name,
389                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
390         if (!rz) {
391                 pr_err("%s : Failed to allocate memory requested for %s",
392                         __func__, name);
393                 return NULL;
394         }
395
396         vaddr = rz->addr;
397         *dma_handle = (dma_addr_t)rz->phys_addr;
398
399         return vaddr;
400 }
401
402 static void
403 enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
404         __rte_unused size_t size,
405         __rte_unused void *vaddr,
406         __rte_unused dma_addr_t dma_handle)
407 {
408         /* Nothing to be done */
409 }
410
411 static void
412 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
413         void *arg)
414 {
415         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
416
417         vnic_intr_return_all_credits(&enic->intr);
418
419         enic_log_q_error(enic);
420 }
421
422 int enic_enable(struct enic *enic)
423 {
424         unsigned int index;
425         int err;
426         struct rte_eth_dev *eth_dev = enic->rte_dev;
427
428         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
429         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
430         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
431
432         if (enic_clsf_init(enic))
433                 dev_warning(enic, "Init of hash table for clsf failed."\
434                         "Flow director feature will not work\n");
435
436         for (index = 0; index < enic->rq_count; index++) {
437                 err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
438                 if (err) {
439                         dev_err(enic, "Failed to alloc RX queue mbufs\n");
440                         return err;
441                 }
442         }
443
444         for (index = 0; index < enic->wq_count; index++)
445                 vnic_wq_enable(&enic->wq[index]);
446         for (index = 0; index < enic->rq_count; index++)
447                 vnic_rq_enable(&enic->rq[index]);
448
449         vnic_dev_enable_wait(enic->vdev);
450
451         /* Register and enable error interrupt */
452         rte_intr_callback_register(&(enic->pdev->intr_handle),
453                 enic_intr_handler, (void *)enic->rte_dev);
454
455         rte_intr_enable(&(enic->pdev->intr_handle));
456         vnic_intr_unmask(&enic->intr);
457
458         return 0;
459 }
460
461 int enic_alloc_intr_resources(struct enic *enic)
462 {
463         int err;
464
465         dev_info(enic, "vNIC resources used:  "\
466                 "wq %d rq %d cq %d intr %d\n",
467                 enic->wq_count, enic->rq_count,
468                 enic->cq_count, enic->intr_count);
469
470         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
471         if (err)
472                 enic_free_vnic_resources(enic);
473
474         return err;
475 }
476
477 void enic_free_rq(void *rxq)
478 {
479         struct vnic_rq *rq = (struct vnic_rq *)rxq;
480         struct enic *enic = vnic_dev_priv(rq->vdev);
481
482         enic_rxmbuf_queue_release(enic, rq);
483         rte_free(rq->mbuf_ring);
484         rq->mbuf_ring = NULL;
485         vnic_rq_free(rq);
486         vnic_cq_free(&enic->cq[rq->index]);
487 }
488
489 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
490 {
491         vnic_wq_enable(&enic->wq[queue_idx]);
492 }
493
494 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
495 {
496         return vnic_wq_disable(&enic->wq[queue_idx]);
497 }
498
499 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
500 {
501         vnic_rq_enable(&enic->rq[queue_idx]);
502 }
503
504 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
505 {
506         return vnic_rq_disable(&enic->rq[queue_idx]);
507 }
508
509 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
510         unsigned int socket_id, struct rte_mempool *mp,
511         uint16_t nb_desc)
512 {
513         int rc;
514         struct vnic_rq *rq = &enic->rq[queue_idx];
515
516         rq->socket_id = socket_id;
517         rq->mp = mp;
518
519         if (nb_desc) {
520                 if (nb_desc > enic->config.rq_desc_count) {
521                         dev_warning(enic,
522                                 "RQ %d - number of rx desc in cmd line (%d)"\
523                                 "is greater than that in the UCSM/CIMC adapter"\
524                                 "policy.  Applying the value in the adapter "\
525                                 "policy (%d).\n",
526                                 queue_idx, nb_desc, enic->config.rq_desc_count);
527                 } else if (nb_desc != enic->config.rq_desc_count) {
528                         enic->config.rq_desc_count = nb_desc;
529                         dev_info(enic,
530                                 "RX Queues - effective number of descs:%d\n",
531                                 nb_desc);
532                 }
533         }
534
535         /* Allocate queue resources */
536         rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
537                 enic->config.rq_desc_count, sizeof(struct rq_enet_desc));
538         if (rc) {
539                 dev_err(enic, "error in allocation of rq\n");
540                 goto err_exit;
541         }
542
543         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
544                 socket_id, enic->config.rq_desc_count,
545                 sizeof(struct cq_enet_rq_desc));
546         if (rc) {
547                 dev_err(enic, "error in allocation of cq for rq\n");
548                 goto err_free_rq_exit;
549         }
550
551         /* Allocate the mbuf ring */
552         rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
553                         sizeof(struct rte_mbuf *) * enic->config.rq_desc_count,
554                         RTE_CACHE_LINE_SIZE, rq->socket_id);
555
556         if (rq->mbuf_ring != NULL)
557                 return 0;
558
559         /* cleanup on error */
560         vnic_cq_free(&enic->cq[queue_idx]);
561 err_free_rq_exit:
562         vnic_rq_free(rq);
563 err_exit:
564         return -ENOMEM;
565 }
566
567 void enic_free_wq(void *txq)
568 {
569         struct vnic_wq *wq = (struct vnic_wq *)txq;
570         struct enic *enic = vnic_dev_priv(wq->vdev);
571
572         vnic_wq_free(wq);
573         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
574 }
575
576 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
577         unsigned int socket_id, uint16_t nb_desc)
578 {
579         int err;
580         struct vnic_wq *wq = &enic->wq[queue_idx];
581         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
582
583         wq->socket_id = socket_id;
584         if (nb_desc) {
585                 if (nb_desc > enic->config.wq_desc_count) {
586                         dev_warning(enic,
587                                 "WQ %d - number of tx desc in cmd line (%d)"\
588                                 "is greater than that in the UCSM/CIMC adapter"\
589                                 "policy.  Applying the value in the adapter "\
590                                 "policy (%d)\n",
591                                 queue_idx, nb_desc, enic->config.wq_desc_count);
592                 } else if (nb_desc != enic->config.wq_desc_count) {
593                         enic->config.wq_desc_count = nb_desc;
594                         dev_info(enic,
595                                 "TX Queues - effective number of descs:%d\n",
596                                 nb_desc);
597                 }
598         }
599
600         /* Allocate queue resources */
601         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
602                 enic->config.wq_desc_count,
603                 sizeof(struct wq_enet_desc));
604         if (err) {
605                 dev_err(enic, "error in allocation of wq\n");
606                 return err;
607         }
608
609         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
610                 socket_id, enic->config.wq_desc_count,
611                 sizeof(struct cq_enet_wq_desc));
612         if (err) {
613                 vnic_wq_free(wq);
614                 dev_err(enic, "error in allocation of cq for wq\n");
615         }
616
617         return err;
618 }
619
620 int enic_disable(struct enic *enic)
621 {
622         unsigned int i;
623         int err;
624
625         vnic_intr_mask(&enic->intr);
626         (void)vnic_intr_masked(&enic->intr); /* flush write */
627
628         vnic_dev_disable(enic->vdev);
629
630         enic_clsf_destroy(enic);
631
632         if (!enic_is_sriov_vf(enic))
633                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
634
635         for (i = 0; i < enic->wq_count; i++) {
636                 err = vnic_wq_disable(&enic->wq[i]);
637                 if (err)
638                         return err;
639         }
640         for (i = 0; i < enic->rq_count; i++) {
641                 err = vnic_rq_disable(&enic->rq[i]);
642                 if (err)
643                         return err;
644         }
645
646         vnic_dev_set_reset_flag(enic->vdev, 1);
647         vnic_dev_notify_unset(enic->vdev);
648
649         for (i = 0; i < enic->wq_count; i++)
650                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
651
652         for (i = 0; i < enic->rq_count; i++)
653                 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
654         for (i = 0; i < enic->cq_count; i++)
655                 vnic_cq_clean(&enic->cq[i]);
656         vnic_intr_clean(&enic->intr);
657
658         return 0;
659 }
660
661 static int enic_dev_wait(struct vnic_dev *vdev,
662         int (*start)(struct vnic_dev *, int),
663         int (*finished)(struct vnic_dev *, int *),
664         int arg)
665 {
666         int done;
667         int err;
668         int i;
669
670         err = start(vdev, arg);
671         if (err)
672                 return err;
673
674         /* Wait for func to complete...2 seconds max */
675         for (i = 0; i < 2000; i++) {
676                 err = finished(vdev, &done);
677                 if (err)
678                         return err;
679                 if (done)
680                         return 0;
681                 usleep(1000);
682         }
683         return -ETIMEDOUT;
684 }
685
686 static int enic_dev_open(struct enic *enic)
687 {
688         int err;
689
690         err = enic_dev_wait(enic->vdev, vnic_dev_open,
691                 vnic_dev_open_done, 0);
692         if (err)
693                 dev_err(enic_get_dev(enic),
694                         "vNIC device open failed, err %d\n", err);
695
696         return err;
697 }
698
699 static int enic_set_rsskey(struct enic *enic)
700 {
701         dma_addr_t rss_key_buf_pa;
702         union vnic_rss_key *rss_key_buf_va = NULL;
703         static union vnic_rss_key rss_key = {
704                 .key = {
705                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
706                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
707                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
708                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
709                 }
710         };
711         int err;
712         u8 name[NAME_MAX];
713
714         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
715         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
716                 &rss_key_buf_pa, name);
717         if (!rss_key_buf_va)
718                 return -ENOMEM;
719
720         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
721
722         err = enic_set_rss_key(enic,
723                 rss_key_buf_pa,
724                 sizeof(union vnic_rss_key));
725
726         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_key),
727                 rss_key_buf_va, rss_key_buf_pa);
728
729         return err;
730 }
731
732 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
733 {
734         dma_addr_t rss_cpu_buf_pa;
735         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
736         int i;
737         int err;
738         u8 name[NAME_MAX];
739
740         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
741         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
742                 &rss_cpu_buf_pa, name);
743         if (!rss_cpu_buf_va)
744                 return -ENOMEM;
745
746         for (i = 0; i < (1 << rss_hash_bits); i++)
747                 (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count;
748
749         err = enic_set_rss_cpu(enic,
750                 rss_cpu_buf_pa,
751                 sizeof(union vnic_rss_cpu));
752
753         enic_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu),
754                 rss_cpu_buf_va, rss_cpu_buf_pa);
755
756         return err;
757 }
758
759 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
760         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
761 {
762         const u8 tso_ipid_split_en = 0;
763         int err;
764
765         /* Enable VLAN tag stripping */
766
767         err = enic_set_nic_cfg(enic,
768                 rss_default_cpu, rss_hash_type,
769                 rss_hash_bits, rss_base_cpu,
770                 rss_enable, tso_ipid_split_en,
771                 enic->ig_vlan_strip_en);
772
773         return err;
774 }
775
776 int enic_set_rss_nic_cfg(struct enic *enic)
777 {
778         const u8 rss_default_cpu = 0;
779         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
780             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
781             NIC_CFG_RSS_HASH_TYPE_IPV6 |
782             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
783         const u8 rss_hash_bits = 7;
784         const u8 rss_base_cpu = 0;
785         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
786
787         if (rss_enable) {
788                 if (!enic_set_rsskey(enic)) {
789                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
790                                 rss_enable = 0;
791                                 dev_warning(enic, "RSS disabled, "\
792                                         "Failed to set RSS cpu indirection table.");
793                         }
794                 } else {
795                         rss_enable = 0;
796                         dev_warning(enic,
797                                 "RSS disabled, Failed to set RSS key.\n");
798                 }
799         }
800
801         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
802                 rss_hash_bits, rss_base_cpu, rss_enable);
803 }
804
805 int enic_setup_finish(struct enic *enic)
806 {
807         int ret;
808
809         ret = enic_set_rss_nic_cfg(enic);
810         if (ret) {
811                 dev_err(enic, "Failed to config nic, aborting.\n");
812                 return -1;
813         }
814
815         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
816
817         /* Default conf */
818         vnic_dev_packet_filter(enic->vdev,
819                 1 /* directed  */,
820                 1 /* multicast */,
821                 1 /* broadcast */,
822                 0 /* promisc   */,
823                 1 /* allmulti  */);
824
825         enic->promisc = 0;
826         enic->allmulti = 1;
827
828         return 0;
829 }
830
831 void enic_add_packet_filter(struct enic *enic)
832 {
833         /* Args -> directed, multicast, broadcast, promisc, allmulti */
834         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
835                 enic->promisc, enic->allmulti);
836 }
837
838 int enic_get_link_status(struct enic *enic)
839 {
840         return vnic_dev_link_status(enic->vdev);
841 }
842
843 static void enic_dev_deinit(struct enic *enic)
844 {
845         struct rte_eth_dev *eth_dev = enic->rte_dev;
846
847         rte_free(eth_dev->data->mac_addrs);
848 }
849
850
851 int enic_set_vnic_res(struct enic *enic)
852 {
853         struct rte_eth_dev *eth_dev = enic->rte_dev;
854
855         if ((enic->rq_count < eth_dev->data->nb_rx_queues) ||
856                 (enic->wq_count < eth_dev->data->nb_tx_queues)) {
857                 dev_err(dev, "Not enough resources configured, aborting\n");
858                 return -1;
859         }
860
861         enic->rq_count = eth_dev->data->nb_rx_queues;
862         enic->wq_count = eth_dev->data->nb_tx_queues;
863         if (enic->cq_count < (enic->rq_count + enic->wq_count)) {
864                 dev_err(dev, "Not enough resources configured, aborting\n");
865                 return -1;
866         }
867
868         enic->cq_count = enic->rq_count + enic->wq_count;
869         return 0;
870 }
871
872 static int enic_dev_init(struct enic *enic)
873 {
874         int err;
875         struct rte_eth_dev *eth_dev = enic->rte_dev;
876
877         vnic_dev_intr_coal_timer_info_default(enic->vdev);
878
879         /* Get vNIC configuration
880         */
881         err = enic_get_vnic_config(enic);
882         if (err) {
883                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
884                 return err;
885         }
886
887         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
888         if (!eth_dev->data->mac_addrs) {
889                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
890                 return -1;
891         }
892         ether_addr_copy((struct ether_addr *) enic->mac_addr,
893                 &eth_dev->data->mac_addrs[0]);
894
895
896         /* Get available resource counts
897         */
898         enic_get_res_counts(enic);
899
900         vnic_dev_set_reset_flag(enic->vdev, 0);
901
902         return 0;
903
904 }
905
906 int enic_probe(struct enic *enic)
907 {
908         struct rte_pci_device *pdev = enic->pdev;
909         int err = -1;
910
911         dev_debug(enic, " Initializing ENIC PMD version %s\n", DRV_VERSION);
912
913         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
914         enic->bar0.len = pdev->mem_resource[0].len;
915
916         /* Register vNIC device */
917         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
918         if (!enic->vdev) {
919                 dev_err(enic, "vNIC registration failed, aborting\n");
920                 goto err_out;
921         }
922
923         vnic_register_cbacks(enic->vdev,
924                 enic_alloc_consistent,
925                 enic_free_consistent);
926
927         /* Issue device open to get device in known state */
928         err = enic_dev_open(enic);
929         if (err) {
930                 dev_err(enic, "vNIC dev open failed, aborting\n");
931                 goto err_out_unregister;
932         }
933
934         /* Set ingress vlan rewrite mode before vnic initialization */
935         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
936                 IG_VLAN_REWRITE_MODE_PASS_THRU);
937         if (err) {
938                 dev_err(enic,
939                         "Failed to set ingress vlan rewrite mode, aborting.\n");
940                 goto err_out_dev_close;
941         }
942
943         /* Issue device init to initialize the vnic-to-switch link.
944          * We'll start with carrier off and wait for link UP
945          * notification later to turn on carrier.  We don't need
946          * to wait here for the vnic-to-switch link initialization
947          * to complete; link UP notification is the indication that
948          * the process is complete.
949          */
950
951         err = vnic_dev_init(enic->vdev, 0);
952         if (err) {
953                 dev_err(enic, "vNIC dev init failed, aborting\n");
954                 goto err_out_dev_close;
955         }
956
957         err = enic_dev_init(enic);
958         if (err) {
959                 dev_err(enic, "Device initialization failed, aborting\n");
960                 goto err_out_dev_close;
961         }
962
963         return 0;
964
965 err_out_dev_close:
966         vnic_dev_close(enic->vdev);
967 err_out_unregister:
968         vnic_dev_unregister(enic->vdev);
969 err_out:
970         return err;
971 }
972
973 void enic_remove(struct enic *enic)
974 {
975         enic_dev_deinit(enic);
976         vnic_dev_close(enic->vdev);
977         vnic_dev_unregister(enic->vdev);
978 }