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[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / broadcom / bnx2x / bnx2x_cmn.c
1 /* bnx2x_cmn.c: Broadcom Everest network driver.
2 *
3 * Copyright (c) 2007-2011 Broadcom Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 *
9 * Maintained by: Eilon Greenstein <eilong@broadcom.com>
10 * Written by: Eliezer Tamir
11 * Based on code from Michael Chan's bnx2 driver
12 * UDP CSUM errata workaround by Arik Gendelman
13 * Slowpath and fastpath rework by Vladislav Zolotarov
14 * Statistics and Link management by Yitchak Gertner
15 *
16 */
17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/etherdevice.h>
21 #include <linux/if_vlan.h>
22 #include <linux/interrupt.h>
23 #include <linux/ip.h>
24 #include <net/ipv6.h>
25 #include <net/ip6_checksum.h>
26 #include <linux/firmware.h>
27 #include <linux/prefetch.h>
28 #include "bnx2x_cmn.h"
29 #include "bnx2x_init.h"
30 #include "bnx2x_sp.h"
31
32
33
34 /**
35 * bnx2x_bz_fp - zero content of the fastpath structure.
36 *
37 * @bp: driver handle
38 * @index: fastpath index to be zeroed
39 *
40 * Makes sure the contents of the bp->fp[index].napi is kept
41 * intact.
42 */
43 static inline void bnx2x_bz_fp(struct bnx2x *bp, int index)
44 {
45 struct bnx2x_fastpath *fp = &bp->fp[index];
46 struct napi_struct orig_napi = fp->napi;
47 /* bzero bnx2x_fastpath contents */
48 memset(fp, 0, sizeof(*fp));
49
50 /* Restore the NAPI object as it has been already initialized */
51 fp->napi = orig_napi;
52
53 fp->bp = bp;
54 fp->index = index;
55 if (IS_ETH_FP(fp))
56 fp->max_cos = bp->max_cos;
57 else
58 /* Special queues support only one CoS */
59 fp->max_cos = 1;
60
61 /*
62 * set the tpa flag for each queue. The tpa flag determines the queue
63 * minimal size so it must be set prior to queue memory allocation
64 */
65 fp->disable_tpa = ((bp->flags & TPA_ENABLE_FLAG) == 0);
66
67 #ifdef BCM_CNIC
68 /* We don't want TPA on an FCoE L2 ring */
69 if (IS_FCOE_FP(fp))
70 fp->disable_tpa = 1;
71 #endif
72 }
73
74 /**
75 * bnx2x_move_fp - move content of the fastpath structure.
76 *
77 * @bp: driver handle
78 * @from: source FP index
79 * @to: destination FP index
80 *
81 * Makes sure the contents of the bp->fp[to].napi is kept
82 * intact. This is done by first copying the napi struct from
83 * the target to the source, and then mem copying the entire
84 * source onto the target
85 */
86 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
87 {
88 struct bnx2x_fastpath *from_fp = &bp->fp[from];
89 struct bnx2x_fastpath *to_fp = &bp->fp[to];
90
91 /* Copy the NAPI object as it has been already initialized */
92 from_fp->napi = to_fp->napi;
93
94 /* Move bnx2x_fastpath contents */
95 memcpy(to_fp, from_fp, sizeof(*to_fp));
96 to_fp->index = to;
97 }
98
99 int load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
100
101 /* free skb in the packet ring at pos idx
102 * return idx of last bd freed
103 */
104 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
105 u16 idx, unsigned int *pkts_compl,
106 unsigned int *bytes_compl)
107 {
108 struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
109 struct eth_tx_start_bd *tx_start_bd;
110 struct eth_tx_bd *tx_data_bd;
111 struct sk_buff *skb = tx_buf->skb;
112 u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
113 int nbd;
114
115 /* prefetch skb end pointer to speedup dev_kfree_skb() */
116 prefetch(&skb->end);
117
118 DP(BNX2X_MSG_FP, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
119 txdata->txq_index, idx, tx_buf, skb);
120
121 /* unmap first bd */
122 DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx);
123 tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
124 dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
125 BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE);
126
127
128 nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
129 #ifdef BNX2X_STOP_ON_ERROR
130 if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
131 BNX2X_ERR("BAD nbd!\n");
132 bnx2x_panic();
133 }
134 #endif
135 new_cons = nbd + tx_buf->first_bd;
136
137 /* Get the next bd */
138 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
139
140 /* Skip a parse bd... */
141 --nbd;
142 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
143
144 /* ...and the TSO split header bd since they have no mapping */
145 if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
146 --nbd;
147 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
148 }
149
150 /* now free frags */
151 while (nbd > 0) {
152
153 DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx);
154 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
155 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
156 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
157 if (--nbd)
158 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
159 }
160
161 /* release skb */
162 WARN_ON(!skb);
163 if (skb) {
164 (*pkts_compl)++;
165 (*bytes_compl) += skb->len;
166 }
167 dev_kfree_skb_any(skb);
168 tx_buf->first_bd = 0;
169 tx_buf->skb = NULL;
170
171 return new_cons;
172 }
173
174 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
175 {
176 struct netdev_queue *txq;
177 u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
178 unsigned int pkts_compl = 0, bytes_compl = 0;
179
180 #ifdef BNX2X_STOP_ON_ERROR
181 if (unlikely(bp->panic))
182 return -1;
183 #endif
184
185 txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
186 hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
187 sw_cons = txdata->tx_pkt_cons;
188
189 while (sw_cons != hw_cons) {
190 u16 pkt_cons;
191
192 pkt_cons = TX_BD(sw_cons);
193
194 DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u "
195 " pkt_cons %u\n",
196 txdata->txq_index, hw_cons, sw_cons, pkt_cons);
197
198 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
199 &pkts_compl, &bytes_compl);
200
201 sw_cons++;
202 }
203
204 netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
205
206 txdata->tx_pkt_cons = sw_cons;
207 txdata->tx_bd_cons = bd_cons;
208
209 /* Need to make the tx_bd_cons update visible to start_xmit()
210 * before checking for netif_tx_queue_stopped(). Without the
211 * memory barrier, there is a small possibility that
212 * start_xmit() will miss it and cause the queue to be stopped
213 * forever.
214 * On the other hand we need an rmb() here to ensure the proper
215 * ordering of bit testing in the following
216 * netif_tx_queue_stopped(txq) call.
217 */
218 smp_mb();
219
220 if (unlikely(netif_tx_queue_stopped(txq))) {
221 /* Taking tx_lock() is needed to prevent reenabling the queue
222 * while it's empty. This could have happen if rx_action() gets
223 * suspended in bnx2x_tx_int() after the condition before
224 * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
225 *
226 * stops the queue->sees fresh tx_bd_cons->releases the queue->
227 * sends some packets consuming the whole queue again->
228 * stops the queue
229 */
230
231 __netif_tx_lock(txq, smp_processor_id());
232
233 if ((netif_tx_queue_stopped(txq)) &&
234 (bp->state == BNX2X_STATE_OPEN) &&
235 (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3))
236 netif_tx_wake_queue(txq);
237
238 __netif_tx_unlock(txq);
239 }
240 return 0;
241 }
242
243 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
244 u16 idx)
245 {
246 u16 last_max = fp->last_max_sge;
247
248 if (SUB_S16(idx, last_max) > 0)
249 fp->last_max_sge = idx;
250 }
251
252 static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
253 struct eth_fast_path_rx_cqe *fp_cqe)
254 {
255 struct bnx2x *bp = fp->bp;
256 u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) -
257 le16_to_cpu(fp_cqe->len_on_bd)) >>
258 SGE_PAGE_SHIFT;
259 u16 last_max, last_elem, first_elem;
260 u16 delta = 0;
261 u16 i;
262
263 if (!sge_len)
264 return;
265
266 /* First mark all used pages */
267 for (i = 0; i < sge_len; i++)
268 BIT_VEC64_CLEAR_BIT(fp->sge_mask,
269 RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[i])));
270
271 DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
272 sge_len - 1, le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
273
274 /* Here we assume that the last SGE index is the biggest */
275 prefetch((void *)(fp->sge_mask));
276 bnx2x_update_last_max_sge(fp,
277 le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
278
279 last_max = RX_SGE(fp->last_max_sge);
280 last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
281 first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
282
283 /* If ring is not full */
284 if (last_elem + 1 != first_elem)
285 last_elem++;
286
287 /* Now update the prod */
288 for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
289 if (likely(fp->sge_mask[i]))
290 break;
291
292 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
293 delta += BIT_VEC64_ELEM_SZ;
294 }
295
296 if (delta > 0) {
297 fp->rx_sge_prod += delta;
298 /* clear page-end entries */
299 bnx2x_clear_sge_mask_next_elems(fp);
300 }
301
302 DP(NETIF_MSG_RX_STATUS,
303 "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
304 fp->last_max_sge, fp->rx_sge_prod);
305 }
306
307 /* Set Toeplitz hash value in the skb using the value from the
308 * CQE (calculated by HW).
309 */
310 static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
311 const struct eth_fast_path_rx_cqe *cqe)
312 {
313 /* Set Toeplitz hash from CQE */
314 if ((bp->dev->features & NETIF_F_RXHASH) &&
315 (cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG))
316 return le32_to_cpu(cqe->rss_hash_result);
317 return 0;
318 }
319
320 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
321 u16 cons, u16 prod,
322 struct eth_fast_path_rx_cqe *cqe)
323 {
324 struct bnx2x *bp = fp->bp;
325 struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
326 struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
327 struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
328 dma_addr_t mapping;
329 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
330 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
331
332 /* print error if current state != stop */
333 if (tpa_info->tpa_state != BNX2X_TPA_STOP)
334 BNX2X_ERR("start of bin not in stop [%d]\n", queue);
335
336 /* Try to map an empty data buffer from the aggregation info */
337 mapping = dma_map_single(&bp->pdev->dev,
338 first_buf->data + NET_SKB_PAD,
339 fp->rx_buf_size, DMA_FROM_DEVICE);
340 /*
341 * ...if it fails - move the skb from the consumer to the producer
342 * and set the current aggregation state as ERROR to drop it
343 * when TPA_STOP arrives.
344 */
345
346 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
347 /* Move the BD from the consumer to the producer */
348 bnx2x_reuse_rx_data(fp, cons, prod);
349 tpa_info->tpa_state = BNX2X_TPA_ERROR;
350 return;
351 }
352
353 /* move empty data from pool to prod */
354 prod_rx_buf->data = first_buf->data;
355 dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
356 /* point prod_bd to new data */
357 prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
358 prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
359
360 /* move partial skb from cons to pool (don't unmap yet) */
361 *first_buf = *cons_rx_buf;
362
363 /* mark bin state as START */
364 tpa_info->parsing_flags =
365 le16_to_cpu(cqe->pars_flags.flags);
366 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
367 tpa_info->tpa_state = BNX2X_TPA_START;
368 tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
369 tpa_info->placement_offset = cqe->placement_offset;
370 tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe);
371
372 #ifdef BNX2X_STOP_ON_ERROR
373 fp->tpa_queue_used |= (1 << queue);
374 #ifdef _ASM_GENERIC_INT_L64_H
375 DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n",
376 #else
377 DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
378 #endif
379 fp->tpa_queue_used);
380 #endif
381 }
382
383 /* Timestamp option length allowed for TPA aggregation:
384 *
385 * nop nop kind length echo val
386 */
387 #define TPA_TSTAMP_OPT_LEN 12
388 /**
389 * bnx2x_set_lro_mss - calculate the approximate value of the MSS
390 *
391 * @bp: driver handle
392 * @parsing_flags: parsing flags from the START CQE
393 * @len_on_bd: total length of the first packet for the
394 * aggregation.
395 *
396 * Approximate value of the MSS for this aggregation calculated using
397 * the first packet of it.
398 */
399 static inline u16 bnx2x_set_lro_mss(struct bnx2x *bp, u16 parsing_flags,
400 u16 len_on_bd)
401 {
402 /*
403 * TPA arrgregation won't have either IP options or TCP options
404 * other than timestamp or IPv6 extension headers.
405 */
406 u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
407
408 if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
409 PRS_FLAG_OVERETH_IPV6)
410 hdrs_len += sizeof(struct ipv6hdr);
411 else /* IPv4 */
412 hdrs_len += sizeof(struct iphdr);
413
414
415 /* Check if there was a TCP timestamp, if there is it's will
416 * always be 12 bytes length: nop nop kind length echo val.
417 *
418 * Otherwise FW would close the aggregation.
419 */
420 if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
421 hdrs_len += TPA_TSTAMP_OPT_LEN;
422
423 return len_on_bd - hdrs_len;
424 }
425
426 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
427 u16 queue, struct sk_buff *skb,
428 struct eth_end_agg_rx_cqe *cqe,
429 u16 cqe_idx)
430 {
431 struct sw_rx_page *rx_pg, old_rx_pg;
432 u32 i, frag_len, frag_size, pages;
433 int err;
434 int j;
435 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
436 u16 len_on_bd = tpa_info->len_on_bd;
437
438 frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
439 pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT;
440
441 /* This is needed in order to enable forwarding support */
442 if (frag_size)
443 skb_shinfo(skb)->gso_size = bnx2x_set_lro_mss(bp,
444 tpa_info->parsing_flags, len_on_bd);
445
446 #ifdef BNX2X_STOP_ON_ERROR
447 if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) {
448 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
449 pages, cqe_idx);
450 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
451 bnx2x_panic();
452 return -EINVAL;
453 }
454 #endif
455
456 /* Run through the SGL and compose the fragmented skb */
457 for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
458 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
459
460 /* FW gives the indices of the SGE as if the ring is an array
461 (meaning that "next" element will consume 2 indices) */
462 frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE));
463 rx_pg = &fp->rx_page_ring[sge_idx];
464 old_rx_pg = *rx_pg;
465
466 /* If we fail to allocate a substitute page, we simply stop
467 where we are and drop the whole packet */
468 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx);
469 if (unlikely(err)) {
470 fp->eth_q_stats.rx_skb_alloc_failed++;
471 return err;
472 }
473
474 /* Unmap the page as we r going to pass it to the stack */
475 dma_unmap_page(&bp->pdev->dev,
476 dma_unmap_addr(&old_rx_pg, mapping),
477 SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE);
478
479 /* Add one frag and update the appropriate fields in the skb */
480 skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len);
481
482 skb->data_len += frag_len;
483 skb->truesize += SGE_PAGE_SIZE * PAGES_PER_SGE;
484 skb->len += frag_len;
485
486 frag_size -= frag_len;
487 }
488
489 return 0;
490 }
491
492 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
493 u16 queue, struct eth_end_agg_rx_cqe *cqe,
494 u16 cqe_idx)
495 {
496 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
497 struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
498 u32 pad = tpa_info->placement_offset;
499 u16 len = tpa_info->len_on_bd;
500 struct sk_buff *skb = NULL;
501 u8 *data = rx_buf->data;
502 /* alloc new skb */
503 u8 *new_data;
504 u8 old_tpa_state = tpa_info->tpa_state;
505
506 tpa_info->tpa_state = BNX2X_TPA_STOP;
507
508 /* If we there was an error during the handling of the TPA_START -
509 * drop this aggregation.
510 */
511 if (old_tpa_state == BNX2X_TPA_ERROR)
512 goto drop;
513
514 /* Try to allocate the new data */
515 new_data = kmalloc(fp->rx_buf_size + NET_SKB_PAD, GFP_ATOMIC);
516
517 /* Unmap skb in the pool anyway, as we are going to change
518 pool entry status to BNX2X_TPA_STOP even if new skb allocation
519 fails. */
520 dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
521 fp->rx_buf_size, DMA_FROM_DEVICE);
522 if (likely(new_data))
523 skb = build_skb(data);
524
525 if (likely(skb)) {
526
527 #ifdef BNX2X_STOP_ON_ERROR
528 if (pad + len > fp->rx_buf_size) {
529 BNX2X_ERR("skb_put is about to fail... "
530 "pad %d len %d rx_buf_size %d\n",
531 pad, len, fp->rx_buf_size);
532 bnx2x_panic();
533 return;
534 }
535 #endif
536
537 skb_reserve(skb, pad + NET_SKB_PAD);
538 skb_put(skb, len);
539 skb->rxhash = tpa_info->rxhash;
540
541 skb->protocol = eth_type_trans(skb, bp->dev);
542 skb->ip_summed = CHECKSUM_UNNECESSARY;
543
544 if (!bnx2x_fill_frag_skb(bp, fp, queue, skb, cqe, cqe_idx)) {
545 if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
546 __vlan_hwaccel_put_tag(skb, tpa_info->vlan_tag);
547 napi_gro_receive(&fp->napi, skb);
548 } else {
549 DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages"
550 " - dropping packet!\n");
551 dev_kfree_skb_any(skb);
552 }
553
554
555 /* put new data in bin */
556 rx_buf->data = new_data;
557
558 return;
559 }
560
561 drop:
562 /* drop the packet and keep the buffer in the bin */
563 DP(NETIF_MSG_RX_STATUS,
564 "Failed to allocate or map a new skb - dropping packet!\n");
565 fp->eth_q_stats.rx_skb_alloc_failed++;
566 }
567
568
569 int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
570 {
571 struct bnx2x *bp = fp->bp;
572 u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
573 u16 hw_comp_cons, sw_comp_cons, sw_comp_prod;
574 int rx_pkt = 0;
575
576 #ifdef BNX2X_STOP_ON_ERROR
577 if (unlikely(bp->panic))
578 return 0;
579 #endif
580
581 /* CQ "next element" is of the size of the regular element,
582 that's why it's ok here */
583 hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb);
584 if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
585 hw_comp_cons++;
586
587 bd_cons = fp->rx_bd_cons;
588 bd_prod = fp->rx_bd_prod;
589 bd_prod_fw = bd_prod;
590 sw_comp_cons = fp->rx_comp_cons;
591 sw_comp_prod = fp->rx_comp_prod;
592
593 /* Memory barrier necessary as speculative reads of the rx
594 * buffer can be ahead of the index in the status block
595 */
596 rmb();
597
598 DP(NETIF_MSG_RX_STATUS,
599 "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n",
600 fp->index, hw_comp_cons, sw_comp_cons);
601
602 while (sw_comp_cons != hw_comp_cons) {
603 struct sw_rx_bd *rx_buf = NULL;
604 struct sk_buff *skb;
605 union eth_rx_cqe *cqe;
606 struct eth_fast_path_rx_cqe *cqe_fp;
607 u8 cqe_fp_flags;
608 enum eth_rx_cqe_type cqe_fp_type;
609 u16 len, pad;
610 u8 *data;
611
612 #ifdef BNX2X_STOP_ON_ERROR
613 if (unlikely(bp->panic))
614 return 0;
615 #endif
616
617 comp_ring_cons = RCQ_BD(sw_comp_cons);
618 bd_prod = RX_BD(bd_prod);
619 bd_cons = RX_BD(bd_cons);
620
621 cqe = &fp->rx_comp_ring[comp_ring_cons];
622 cqe_fp = &cqe->fast_path_cqe;
623 cqe_fp_flags = cqe_fp->type_error_flags;
624 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
625
626 DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x"
627 " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags),
628 cqe_fp_flags, cqe_fp->status_flags,
629 le32_to_cpu(cqe_fp->rss_hash_result),
630 le16_to_cpu(cqe_fp->vlan_tag), le16_to_cpu(cqe_fp->pkt_len));
631
632 /* is this a slowpath msg? */
633 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
634 bnx2x_sp_event(fp, cqe);
635 goto next_cqe;
636 }
637 rx_buf = &fp->rx_buf_ring[bd_cons];
638 data = rx_buf->data;
639
640 if (!CQE_TYPE_FAST(cqe_fp_type)) {
641 #ifdef BNX2X_STOP_ON_ERROR
642 /* sanity check */
643 if (fp->disable_tpa &&
644 (CQE_TYPE_START(cqe_fp_type) ||
645 CQE_TYPE_STOP(cqe_fp_type)))
646 BNX2X_ERR("START/STOP packet while "
647 "disable_tpa type %x\n",
648 CQE_TYPE(cqe_fp_type));
649 #endif
650
651 if (CQE_TYPE_START(cqe_fp_type)) {
652 u16 queue = cqe_fp->queue_index;
653 DP(NETIF_MSG_RX_STATUS,
654 "calling tpa_start on queue %d\n",
655 queue);
656
657 bnx2x_tpa_start(fp, queue,
658 bd_cons, bd_prod,
659 cqe_fp);
660 goto next_rx;
661 } else {
662 u16 queue =
663 cqe->end_agg_cqe.queue_index;
664 DP(NETIF_MSG_RX_STATUS,
665 "calling tpa_stop on queue %d\n",
666 queue);
667
668 bnx2x_tpa_stop(bp, fp, queue,
669 &cqe->end_agg_cqe,
670 comp_ring_cons);
671 #ifdef BNX2X_STOP_ON_ERROR
672 if (bp->panic)
673 return 0;
674 #endif
675
676 bnx2x_update_sge_prod(fp, cqe_fp);
677 goto next_cqe;
678 }
679 }
680 /* non TPA */
681 len = le16_to_cpu(cqe_fp->pkt_len);
682 pad = cqe_fp->placement_offset;
683 dma_sync_single_for_cpu(&bp->pdev->dev,
684 dma_unmap_addr(rx_buf, mapping),
685 pad + RX_COPY_THRESH,
686 DMA_FROM_DEVICE);
687 pad += NET_SKB_PAD;
688 prefetch(data + pad); /* speedup eth_type_trans() */
689 /* is this an error packet? */
690 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
691 DP(NETIF_MSG_RX_ERR,
692 "ERROR flags %x rx packet %u\n",
693 cqe_fp_flags, sw_comp_cons);
694 fp->eth_q_stats.rx_err_discard_pkt++;
695 goto reuse_rx;
696 }
697
698 /* Since we don't have a jumbo ring
699 * copy small packets if mtu > 1500
700 */
701 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
702 (len <= RX_COPY_THRESH)) {
703 skb = netdev_alloc_skb_ip_align(bp->dev, len);
704 if (skb == NULL) {
705 DP(NETIF_MSG_RX_ERR,
706 "ERROR packet dropped because of alloc failure\n");
707 fp->eth_q_stats.rx_skb_alloc_failed++;
708 goto reuse_rx;
709 }
710 memcpy(skb->data, data + pad, len);
711 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
712 } else {
713 if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod) == 0)) {
714 dma_unmap_single(&bp->pdev->dev,
715 dma_unmap_addr(rx_buf, mapping),
716 fp->rx_buf_size,
717 DMA_FROM_DEVICE);
718 skb = build_skb(data);
719 if (unlikely(!skb)) {
720 kfree(data);
721 fp->eth_q_stats.rx_skb_alloc_failed++;
722 goto next_rx;
723 }
724 skb_reserve(skb, pad);
725 } else {
726 DP(NETIF_MSG_RX_ERR,
727 "ERROR packet dropped because "
728 "of alloc failure\n");
729 fp->eth_q_stats.rx_skb_alloc_failed++;
730 reuse_rx:
731 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
732 goto next_rx;
733 }
734 }
735
736 skb_put(skb, len);
737 skb->protocol = eth_type_trans(skb, bp->dev);
738
739 /* Set Toeplitz hash for a none-LRO skb */
740 skb->rxhash = bnx2x_get_rxhash(bp, cqe_fp);
741
742 skb_checksum_none_assert(skb);
743
744 if (bp->dev->features & NETIF_F_RXCSUM) {
745
746 if (likely(BNX2X_RX_CSUM_OK(cqe)))
747 skb->ip_summed = CHECKSUM_UNNECESSARY;
748 else
749 fp->eth_q_stats.hw_csum_err++;
750 }
751
752 skb_record_rx_queue(skb, fp->rx_queue);
753
754 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
755 PARSING_FLAGS_VLAN)
756 __vlan_hwaccel_put_tag(skb,
757 le16_to_cpu(cqe_fp->vlan_tag));
758 napi_gro_receive(&fp->napi, skb);
759
760
761 next_rx:
762 rx_buf->data = NULL;
763
764 bd_cons = NEXT_RX_IDX(bd_cons);
765 bd_prod = NEXT_RX_IDX(bd_prod);
766 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
767 rx_pkt++;
768 next_cqe:
769 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
770 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
771
772 if (rx_pkt == budget)
773 break;
774 } /* while */
775
776 fp->rx_bd_cons = bd_cons;
777 fp->rx_bd_prod = bd_prod_fw;
778 fp->rx_comp_cons = sw_comp_cons;
779 fp->rx_comp_prod = sw_comp_prod;
780
781 /* Update producers */
782 bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
783 fp->rx_sge_prod);
784
785 fp->rx_pkt += rx_pkt;
786 fp->rx_calls++;
787
788 return rx_pkt;
789 }
790
791 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
792 {
793 struct bnx2x_fastpath *fp = fp_cookie;
794 struct bnx2x *bp = fp->bp;
795 u8 cos;
796
797 DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB "
798 "[fp %d fw_sd %d igusb %d]\n",
799 fp->index, fp->fw_sb_id, fp->igu_sb_id);
800 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
801
802 #ifdef BNX2X_STOP_ON_ERROR
803 if (unlikely(bp->panic))
804 return IRQ_HANDLED;
805 #endif
806
807 /* Handle Rx and Tx according to MSI-X vector */
808 prefetch(fp->rx_cons_sb);
809
810 for_each_cos_in_tx_queue(fp, cos)
811 prefetch(fp->txdata[cos].tx_cons_sb);
812
813 prefetch(&fp->sb_running_index[SM_RX_ID]);
814 napi_schedule(&bnx2x_fp(bp, fp->index, napi));
815
816 return IRQ_HANDLED;
817 }
818
819 /* HW Lock for shared dual port PHYs */
820 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
821 {
822 mutex_lock(&bp->port.phy_mutex);
823
824 if (bp->port.need_hw_lock)
825 bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
826 }
827
828 void bnx2x_release_phy_lock(struct bnx2x *bp)
829 {
830 if (bp->port.need_hw_lock)
831 bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
832
833 mutex_unlock(&bp->port.phy_mutex);
834 }
835
836 /* calculates MF speed according to current linespeed and MF configuration */
837 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
838 {
839 u16 line_speed = bp->link_vars.line_speed;
840 if (IS_MF(bp)) {
841 u16 maxCfg = bnx2x_extract_max_cfg(bp,
842 bp->mf_config[BP_VN(bp)]);
843
844 /* Calculate the current MAX line speed limit for the MF
845 * devices
846 */
847 if (IS_MF_SI(bp))
848 line_speed = (line_speed * maxCfg) / 100;
849 else { /* SD mode */
850 u16 vn_max_rate = maxCfg * 100;
851
852 if (vn_max_rate < line_speed)
853 line_speed = vn_max_rate;
854 }
855 }
856
857 return line_speed;
858 }
859
860 /**
861 * bnx2x_fill_report_data - fill link report data to report
862 *
863 * @bp: driver handle
864 * @data: link state to update
865 *
866 * It uses a none-atomic bit operations because is called under the mutex.
867 */
868 static inline void bnx2x_fill_report_data(struct bnx2x *bp,
869 struct bnx2x_link_report_data *data)
870 {
871 u16 line_speed = bnx2x_get_mf_speed(bp);
872
873 memset(data, 0, sizeof(*data));
874
875 /* Fill the report data: efective line speed */
876 data->line_speed = line_speed;
877
878 /* Link is down */
879 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
880 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
881 &data->link_report_flags);
882
883 /* Full DUPLEX */
884 if (bp->link_vars.duplex == DUPLEX_FULL)
885 __set_bit(BNX2X_LINK_REPORT_FD, &data->link_report_flags);
886
887 /* Rx Flow Control is ON */
888 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
889 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON, &data->link_report_flags);
890
891 /* Tx Flow Control is ON */
892 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
893 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON, &data->link_report_flags);
894 }
895
896 /**
897 * bnx2x_link_report - report link status to OS.
898 *
899 * @bp: driver handle
900 *
901 * Calls the __bnx2x_link_report() under the same locking scheme
902 * as a link/PHY state managing code to ensure a consistent link
903 * reporting.
904 */
905
906 void bnx2x_link_report(struct bnx2x *bp)
907 {
908 bnx2x_acquire_phy_lock(bp);
909 __bnx2x_link_report(bp);
910 bnx2x_release_phy_lock(bp);
911 }
912
913 /**
914 * __bnx2x_link_report - report link status to OS.
915 *
916 * @bp: driver handle
917 *
918 * None atomic inmlementation.
919 * Should be called under the phy_lock.
920 */
921 void __bnx2x_link_report(struct bnx2x *bp)
922 {
923 struct bnx2x_link_report_data cur_data;
924
925 /* reread mf_cfg */
926 if (!CHIP_IS_E1(bp))
927 bnx2x_read_mf_cfg(bp);
928
929 /* Read the current link report info */
930 bnx2x_fill_report_data(bp, &cur_data);
931
932 /* Don't report link down or exactly the same link status twice */
933 if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
934 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
935 &bp->last_reported_link.link_report_flags) &&
936 test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
937 &cur_data.link_report_flags)))
938 return;
939
940 bp->link_cnt++;
941
942 /* We are going to report a new link parameters now -
943 * remember the current data for the next time.
944 */
945 memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
946
947 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
948 &cur_data.link_report_flags)) {
949 netif_carrier_off(bp->dev);
950 netdev_err(bp->dev, "NIC Link is Down\n");
951 return;
952 } else {
953 const char *duplex;
954 const char *flow;
955
956 netif_carrier_on(bp->dev);
957
958 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
959 &cur_data.link_report_flags))
960 duplex = "full";
961 else
962 duplex = "half";
963
964 /* Handle the FC at the end so that only these flags would be
965 * possibly set. This way we may easily check if there is no FC
966 * enabled.
967 */
968 if (cur_data.link_report_flags) {
969 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
970 &cur_data.link_report_flags)) {
971 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
972 &cur_data.link_report_flags))
973 flow = "ON - receive & transmit";
974 else
975 flow = "ON - receive";
976 } else {
977 flow = "ON - transmit";
978 }
979 } else {
980 flow = "none";
981 }
982 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
983 cur_data.line_speed, duplex, flow);
984 }
985 }
986
987 void bnx2x_init_rx_rings(struct bnx2x *bp)
988 {
989 int func = BP_FUNC(bp);
990 u16 ring_prod;
991 int i, j;
992
993 /* Allocate TPA resources */
994 for_each_rx_queue(bp, j) {
995 struct bnx2x_fastpath *fp = &bp->fp[j];
996
997 DP(NETIF_MSG_IFUP,
998 "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
999
1000 if (!fp->disable_tpa) {
1001 /* Fill the per-aggregtion pool */
1002 for (i = 0; i < MAX_AGG_QS(bp); i++) {
1003 struct bnx2x_agg_info *tpa_info =
1004 &fp->tpa_info[i];
1005 struct sw_rx_bd *first_buf =
1006 &tpa_info->first_buf;
1007
1008 first_buf->data = kmalloc(fp->rx_buf_size + NET_SKB_PAD,
1009 GFP_ATOMIC);
1010 if (!first_buf->data) {
1011 BNX2X_ERR("Failed to allocate TPA "
1012 "skb pool for queue[%d] - "
1013 "disabling TPA on this "
1014 "queue!\n", j);
1015 bnx2x_free_tpa_pool(bp, fp, i);
1016 fp->disable_tpa = 1;
1017 break;
1018 }
1019 dma_unmap_addr_set(first_buf, mapping, 0);
1020 tpa_info->tpa_state = BNX2X_TPA_STOP;
1021 }
1022
1023 /* "next page" elements initialization */
1024 bnx2x_set_next_page_sgl(fp);
1025
1026 /* set SGEs bit mask */
1027 bnx2x_init_sge_ring_bit_mask(fp);
1028
1029 /* Allocate SGEs and initialize the ring elements */
1030 for (i = 0, ring_prod = 0;
1031 i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1032
1033 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) {
1034 BNX2X_ERR("was only able to allocate "
1035 "%d rx sges\n", i);
1036 BNX2X_ERR("disabling TPA for "
1037 "queue[%d]\n", j);
1038 /* Cleanup already allocated elements */
1039 bnx2x_free_rx_sge_range(bp, fp,
1040 ring_prod);
1041 bnx2x_free_tpa_pool(bp, fp,
1042 MAX_AGG_QS(bp));
1043 fp->disable_tpa = 1;
1044 ring_prod = 0;
1045 break;
1046 }
1047 ring_prod = NEXT_SGE_IDX(ring_prod);
1048 }
1049
1050 fp->rx_sge_prod = ring_prod;
1051 }
1052 }
1053
1054 for_each_rx_queue(bp, j) {
1055 struct bnx2x_fastpath *fp = &bp->fp[j];
1056
1057 fp->rx_bd_cons = 0;
1058
1059 /* Activate BD ring */
1060 /* Warning!
1061 * this will generate an interrupt (to the TSTORM)
1062 * must only be done after chip is initialized
1063 */
1064 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1065 fp->rx_sge_prod);
1066
1067 if (j != 0)
1068 continue;
1069
1070 if (CHIP_IS_E1(bp)) {
1071 REG_WR(bp, BAR_USTRORM_INTMEM +
1072 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1073 U64_LO(fp->rx_comp_mapping));
1074 REG_WR(bp, BAR_USTRORM_INTMEM +
1075 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1076 U64_HI(fp->rx_comp_mapping));
1077 }
1078 }
1079 }
1080
1081 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1082 {
1083 int i;
1084 u8 cos;
1085
1086 for_each_tx_queue(bp, i) {
1087 struct bnx2x_fastpath *fp = &bp->fp[i];
1088 for_each_cos_in_tx_queue(fp, cos) {
1089 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
1090 unsigned pkts_compl = 0, bytes_compl = 0;
1091
1092 u16 sw_prod = txdata->tx_pkt_prod;
1093 u16 sw_cons = txdata->tx_pkt_cons;
1094
1095 while (sw_cons != sw_prod) {
1096 bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1097 &pkts_compl, &bytes_compl);
1098 sw_cons++;
1099 }
1100 netdev_tx_reset_queue(
1101 netdev_get_tx_queue(bp->dev, txdata->txq_index));
1102 }
1103 }
1104 }
1105
1106 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1107 {
1108 struct bnx2x *bp = fp->bp;
1109 int i;
1110
1111 /* ring wasn't allocated */
1112 if (fp->rx_buf_ring == NULL)
1113 return;
1114
1115 for (i = 0; i < NUM_RX_BD; i++) {
1116 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1117 u8 *data = rx_buf->data;
1118
1119 if (data == NULL)
1120 continue;
1121 dma_unmap_single(&bp->pdev->dev,
1122 dma_unmap_addr(rx_buf, mapping),
1123 fp->rx_buf_size, DMA_FROM_DEVICE);
1124
1125 rx_buf->data = NULL;
1126 kfree(data);
1127 }
1128 }
1129
1130 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1131 {
1132 int j;
1133
1134 for_each_rx_queue(bp, j) {
1135 struct bnx2x_fastpath *fp = &bp->fp[j];
1136
1137 bnx2x_free_rx_bds(fp);
1138
1139 if (!fp->disable_tpa)
1140 bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1141 }
1142 }
1143
1144 void bnx2x_free_skbs(struct bnx2x *bp)
1145 {
1146 bnx2x_free_tx_skbs(bp);
1147 bnx2x_free_rx_skbs(bp);
1148 }
1149
1150 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1151 {
1152 /* load old values */
1153 u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1154
1155 if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1156 /* leave all but MAX value */
1157 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1158
1159 /* set new MAX value */
1160 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1161 & FUNC_MF_CFG_MAX_BW_MASK;
1162
1163 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1164 }
1165 }
1166
1167 /**
1168 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1169 *
1170 * @bp: driver handle
1171 * @nvecs: number of vectors to be released
1172 */
1173 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1174 {
1175 int i, offset = 0;
1176
1177 if (nvecs == offset)
1178 return;
1179 free_irq(bp->msix_table[offset].vector, bp->dev);
1180 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1181 bp->msix_table[offset].vector);
1182 offset++;
1183 #ifdef BCM_CNIC
1184 if (nvecs == offset)
1185 return;
1186 offset++;
1187 #endif
1188
1189 for_each_eth_queue(bp, i) {
1190 if (nvecs == offset)
1191 return;
1192 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d "
1193 "irq\n", i, bp->msix_table[offset].vector);
1194
1195 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1196 }
1197 }
1198
1199 void bnx2x_free_irq(struct bnx2x *bp)
1200 {
1201 if (bp->flags & USING_MSIX_FLAG)
1202 bnx2x_free_msix_irqs(bp, BNX2X_NUM_ETH_QUEUES(bp) +
1203 CNIC_PRESENT + 1);
1204 else if (bp->flags & USING_MSI_FLAG)
1205 free_irq(bp->pdev->irq, bp->dev);
1206 else
1207 free_irq(bp->pdev->irq, bp->dev);
1208 }
1209
1210 int bnx2x_enable_msix(struct bnx2x *bp)
1211 {
1212 int msix_vec = 0, i, rc, req_cnt;
1213
1214 bp->msix_table[msix_vec].entry = msix_vec;
1215 DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n",
1216 bp->msix_table[0].entry);
1217 msix_vec++;
1218
1219 #ifdef BCM_CNIC
1220 bp->msix_table[msix_vec].entry = msix_vec;
1221 DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d (CNIC)\n",
1222 bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
1223 msix_vec++;
1224 #endif
1225 /* We need separate vectors for ETH queues only (not FCoE) */
1226 for_each_eth_queue(bp, i) {
1227 bp->msix_table[msix_vec].entry = msix_vec;
1228 DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d "
1229 "(fastpath #%u)\n", msix_vec, msix_vec, i);
1230 msix_vec++;
1231 }
1232
1233 req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_PRESENT + 1;
1234
1235 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
1236
1237 /*
1238 * reconfigure number of tx/rx queues according to available
1239 * MSI-X vectors
1240 */
1241 if (rc >= BNX2X_MIN_MSIX_VEC_CNT) {
1242 /* how less vectors we will have? */
1243 int diff = req_cnt - rc;
1244
1245 DP(NETIF_MSG_IFUP,
1246 "Trying to use less MSI-X vectors: %d\n", rc);
1247
1248 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc);
1249
1250 if (rc) {
1251 DP(NETIF_MSG_IFUP,
1252 "MSI-X is not attainable rc %d\n", rc);
1253 return rc;
1254 }
1255 /*
1256 * decrease number of queues by number of unallocated entries
1257 */
1258 bp->num_queues -= diff;
1259
1260 DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n",
1261 bp->num_queues);
1262 } else if (rc) {
1263 /* fall to INTx if not enough memory */
1264 if (rc == -ENOMEM)
1265 bp->flags |= DISABLE_MSI_FLAG;
1266 DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc);
1267 return rc;
1268 }
1269
1270 bp->flags |= USING_MSIX_FLAG;
1271
1272 return 0;
1273 }
1274
1275 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1276 {
1277 int i, rc, offset = 0;
1278
1279 rc = request_irq(bp->msix_table[offset++].vector,
1280 bnx2x_msix_sp_int, 0,
1281 bp->dev->name, bp->dev);
1282 if (rc) {
1283 BNX2X_ERR("request sp irq failed\n");
1284 return -EBUSY;
1285 }
1286
1287 #ifdef BCM_CNIC
1288 offset++;
1289 #endif
1290 for_each_eth_queue(bp, i) {
1291 struct bnx2x_fastpath *fp = &bp->fp[i];
1292 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1293 bp->dev->name, i);
1294
1295 rc = request_irq(bp->msix_table[offset].vector,
1296 bnx2x_msix_fp_int, 0, fp->name, fp);
1297 if (rc) {
1298 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
1299 bp->msix_table[offset].vector, rc);
1300 bnx2x_free_msix_irqs(bp, offset);
1301 return -EBUSY;
1302 }
1303
1304 offset++;
1305 }
1306
1307 i = BNX2X_NUM_ETH_QUEUES(bp);
1308 offset = 1 + CNIC_PRESENT;
1309 netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d"
1310 " ... fp[%d] %d\n",
1311 bp->msix_table[0].vector,
1312 0, bp->msix_table[offset].vector,
1313 i - 1, bp->msix_table[offset + i - 1].vector);
1314
1315 return 0;
1316 }
1317
1318 int bnx2x_enable_msi(struct bnx2x *bp)
1319 {
1320 int rc;
1321
1322 rc = pci_enable_msi(bp->pdev);
1323 if (rc) {
1324 DP(NETIF_MSG_IFUP, "MSI is not attainable\n");
1325 return -1;
1326 }
1327 bp->flags |= USING_MSI_FLAG;
1328
1329 return 0;
1330 }
1331
1332 static int bnx2x_req_irq(struct bnx2x *bp)
1333 {
1334 unsigned long flags;
1335 int rc;
1336
1337 if (bp->flags & USING_MSI_FLAG)
1338 flags = 0;
1339 else
1340 flags = IRQF_SHARED;
1341
1342 rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags,
1343 bp->dev->name, bp->dev);
1344 return rc;
1345 }
1346
1347 static inline int bnx2x_setup_irqs(struct bnx2x *bp)
1348 {
1349 int rc = 0;
1350 if (bp->flags & USING_MSIX_FLAG) {
1351 rc = bnx2x_req_msix_irqs(bp);
1352 if (rc)
1353 return rc;
1354 } else {
1355 bnx2x_ack_int(bp);
1356 rc = bnx2x_req_irq(bp);
1357 if (rc) {
1358 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
1359 return rc;
1360 }
1361 if (bp->flags & USING_MSI_FLAG) {
1362 bp->dev->irq = bp->pdev->irq;
1363 netdev_info(bp->dev, "using MSI IRQ %d\n",
1364 bp->pdev->irq);
1365 }
1366 }
1367
1368 return 0;
1369 }
1370
1371 static inline void bnx2x_napi_enable(struct bnx2x *bp)
1372 {
1373 int i;
1374
1375 for_each_rx_queue(bp, i)
1376 napi_enable(&bnx2x_fp(bp, i, napi));
1377 }
1378
1379 static inline void bnx2x_napi_disable(struct bnx2x *bp)
1380 {
1381 int i;
1382
1383 for_each_rx_queue(bp, i)
1384 napi_disable(&bnx2x_fp(bp, i, napi));
1385 }
1386
1387 void bnx2x_netif_start(struct bnx2x *bp)
1388 {
1389 if (netif_running(bp->dev)) {
1390 bnx2x_napi_enable(bp);
1391 bnx2x_int_enable(bp);
1392 if (bp->state == BNX2X_STATE_OPEN)
1393 netif_tx_wake_all_queues(bp->dev);
1394 }
1395 }
1396
1397 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1398 {
1399 bnx2x_int_disable_sync(bp, disable_hw);
1400 bnx2x_napi_disable(bp);
1401 }
1402
1403 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
1404 {
1405 struct bnx2x *bp = netdev_priv(dev);
1406
1407 #ifdef BCM_CNIC
1408 if (!NO_FCOE(bp)) {
1409 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1410 u16 ether_type = ntohs(hdr->h_proto);
1411
1412 /* Skip VLAN tag if present */
1413 if (ether_type == ETH_P_8021Q) {
1414 struct vlan_ethhdr *vhdr =
1415 (struct vlan_ethhdr *)skb->data;
1416
1417 ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1418 }
1419
1420 /* If ethertype is FCoE or FIP - use FCoE ring */
1421 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1422 return bnx2x_fcoe_tx(bp, txq_index);
1423 }
1424 #endif
1425 /* select a non-FCoE queue */
1426 return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
1427 }
1428
1429 void bnx2x_set_num_queues(struct bnx2x *bp)
1430 {
1431 switch (bp->multi_mode) {
1432 case ETH_RSS_MODE_DISABLED:
1433 bp->num_queues = 1;
1434 break;
1435 case ETH_RSS_MODE_REGULAR:
1436 bp->num_queues = bnx2x_calc_num_queues(bp);
1437 break;
1438
1439 default:
1440 bp->num_queues = 1;
1441 break;
1442 }
1443
1444 #ifdef BCM_CNIC
1445 /* override in ISCSI SD mod */
1446 if (IS_MF_ISCSI_SD(bp))
1447 bp->num_queues = 1;
1448 #endif
1449 /* Add special queues */
1450 bp->num_queues += NON_ETH_CONTEXT_USE;
1451 }
1452
1453 /**
1454 * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1455 *
1456 * @bp: Driver handle
1457 *
1458 * We currently support for at most 16 Tx queues for each CoS thus we will
1459 * allocate a multiple of 16 for ETH L2 rings according to the value of the
1460 * bp->max_cos.
1461 *
1462 * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1463 * index after all ETH L2 indices.
1464 *
1465 * If the actual number of Tx queues (for each CoS) is less than 16 then there
1466 * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1467 * 16..31,...) with indicies that are not coupled with any real Tx queue.
1468 *
1469 * The proper configuration of skb->queue_mapping is handled by
1470 * bnx2x_select_queue() and __skb_tx_hash().
1471 *
1472 * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1473 * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1474 */
1475 static inline int bnx2x_set_real_num_queues(struct bnx2x *bp)
1476 {
1477 int rc, tx, rx;
1478
1479 tx = MAX_TXQS_PER_COS * bp->max_cos;
1480 rx = BNX2X_NUM_ETH_QUEUES(bp);
1481
1482 /* account for fcoe queue */
1483 #ifdef BCM_CNIC
1484 if (!NO_FCOE(bp)) {
1485 rx += FCOE_PRESENT;
1486 tx += FCOE_PRESENT;
1487 }
1488 #endif
1489
1490 rc = netif_set_real_num_tx_queues(bp->dev, tx);
1491 if (rc) {
1492 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
1493 return rc;
1494 }
1495 rc = netif_set_real_num_rx_queues(bp->dev, rx);
1496 if (rc) {
1497 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
1498 return rc;
1499 }
1500
1501 DP(NETIF_MSG_DRV, "Setting real num queues to (tx, rx) (%d, %d)\n",
1502 tx, rx);
1503
1504 return rc;
1505 }
1506
1507 static inline void bnx2x_set_rx_buf_size(struct bnx2x *bp)
1508 {
1509 int i;
1510
1511 for_each_queue(bp, i) {
1512 struct bnx2x_fastpath *fp = &bp->fp[i];
1513 u32 mtu;
1514
1515 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
1516 if (IS_FCOE_IDX(i))
1517 /*
1518 * Although there are no IP frames expected to arrive to
1519 * this ring we still want to add an
1520 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
1521 * overrun attack.
1522 */
1523 mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
1524 else
1525 mtu = bp->dev->mtu;
1526 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
1527 IP_HEADER_ALIGNMENT_PADDING +
1528 ETH_OVREHEAD +
1529 mtu +
1530 BNX2X_FW_RX_ALIGN_END;
1531 /* Note : rx_buf_size doesnt take into account NET_SKB_PAD */
1532 }
1533 }
1534
1535 static inline int bnx2x_init_rss_pf(struct bnx2x *bp)
1536 {
1537 int i;
1538 u8 ind_table[T_ETH_INDIRECTION_TABLE_SIZE] = {0};
1539 u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
1540
1541 /*
1542 * Prepare the inital contents fo the indirection table if RSS is
1543 * enabled
1544 */
1545 if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
1546 for (i = 0; i < sizeof(ind_table); i++)
1547 ind_table[i] =
1548 bp->fp->cl_id +
1549 ethtool_rxfh_indir_default(i, num_eth_queues);
1550 }
1551
1552 /*
1553 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
1554 * per-port, so if explicit configuration is needed , do it only
1555 * for a PMF.
1556 *
1557 * For 57712 and newer on the other hand it's a per-function
1558 * configuration.
1559 */
1560 return bnx2x_config_rss_pf(bp, ind_table,
1561 bp->port.pmf || !CHIP_IS_E1x(bp));
1562 }
1563
1564 int bnx2x_config_rss_pf(struct bnx2x *bp, u8 *ind_table, bool config_hash)
1565 {
1566 struct bnx2x_config_rss_params params = {0};
1567 int i;
1568
1569 /* Although RSS is meaningless when there is a single HW queue we
1570 * still need it enabled in order to have HW Rx hash generated.
1571 *
1572 * if (!is_eth_multi(bp))
1573 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
1574 */
1575
1576 params.rss_obj = &bp->rss_conf_obj;
1577
1578 __set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
1579
1580 /* RSS mode */
1581 switch (bp->multi_mode) {
1582 case ETH_RSS_MODE_DISABLED:
1583 __set_bit(BNX2X_RSS_MODE_DISABLED, &params.rss_flags);
1584 break;
1585 case ETH_RSS_MODE_REGULAR:
1586 __set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
1587 break;
1588 case ETH_RSS_MODE_VLAN_PRI:
1589 __set_bit(BNX2X_RSS_MODE_VLAN_PRI, &params.rss_flags);
1590 break;
1591 case ETH_RSS_MODE_E1HOV_PRI:
1592 __set_bit(BNX2X_RSS_MODE_E1HOV_PRI, &params.rss_flags);
1593 break;
1594 case ETH_RSS_MODE_IP_DSCP:
1595 __set_bit(BNX2X_RSS_MODE_IP_DSCP, &params.rss_flags);
1596 break;
1597 default:
1598 BNX2X_ERR("Unknown multi_mode: %d\n", bp->multi_mode);
1599 return -EINVAL;
1600 }
1601
1602 /* If RSS is enabled */
1603 if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
1604 /* RSS configuration */
1605 __set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
1606 __set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
1607 __set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
1608 __set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
1609
1610 /* Hash bits */
1611 params.rss_result_mask = MULTI_MASK;
1612
1613 memcpy(params.ind_table, ind_table, sizeof(params.ind_table));
1614
1615 if (config_hash) {
1616 /* RSS keys */
1617 for (i = 0; i < sizeof(params.rss_key) / 4; i++)
1618 params.rss_key[i] = random32();
1619
1620 __set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
1621 }
1622 }
1623
1624 return bnx2x_config_rss(bp, &params);
1625 }
1626
1627 static inline int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
1628 {
1629 struct bnx2x_func_state_params func_params = {0};
1630
1631 /* Prepare parameters for function state transitions */
1632 __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
1633
1634 func_params.f_obj = &bp->func_obj;
1635 func_params.cmd = BNX2X_F_CMD_HW_INIT;
1636
1637 func_params.params.hw_init.load_phase = load_code;
1638
1639 return bnx2x_func_state_change(bp, &func_params);
1640 }
1641
1642 /*
1643 * Cleans the object that have internal lists without sending
1644 * ramrods. Should be run when interrutps are disabled.
1645 */
1646 static void bnx2x_squeeze_objects(struct bnx2x *bp)
1647 {
1648 int rc;
1649 unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
1650 struct bnx2x_mcast_ramrod_params rparam = {0};
1651 struct bnx2x_vlan_mac_obj *mac_obj = &bp->fp->mac_obj;
1652
1653 /***************** Cleanup MACs' object first *************************/
1654
1655 /* Wait for completion of requested */
1656 __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
1657 /* Perform a dry cleanup */
1658 __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
1659
1660 /* Clean ETH primary MAC */
1661 __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
1662 rc = mac_obj->delete_all(bp, &bp->fp->mac_obj, &vlan_mac_flags,
1663 &ramrod_flags);
1664 if (rc != 0)
1665 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
1666
1667 /* Cleanup UC list */
1668 vlan_mac_flags = 0;
1669 __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
1670 rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
1671 &ramrod_flags);
1672 if (rc != 0)
1673 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
1674
1675 /***************** Now clean mcast object *****************************/
1676 rparam.mcast_obj = &bp->mcast_obj;
1677 __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
1678
1679 /* Add a DEL command... */
1680 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
1681 if (rc < 0)
1682 BNX2X_ERR("Failed to add a new DEL command to a multi-cast "
1683 "object: %d\n", rc);
1684
1685 /* ...and wait until all pending commands are cleared */
1686 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1687 while (rc != 0) {
1688 if (rc < 0) {
1689 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
1690 rc);
1691 return;
1692 }
1693
1694 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1695 }
1696 }
1697
1698 #ifndef BNX2X_STOP_ON_ERROR
1699 #define LOAD_ERROR_EXIT(bp, label) \
1700 do { \
1701 (bp)->state = BNX2X_STATE_ERROR; \
1702 goto label; \
1703 } while (0)
1704 #else
1705 #define LOAD_ERROR_EXIT(bp, label) \
1706 do { \
1707 (bp)->state = BNX2X_STATE_ERROR; \
1708 (bp)->panic = 1; \
1709 return -EBUSY; \
1710 } while (0)
1711 #endif
1712
1713 /* must be called with rtnl_lock */
1714 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
1715 {
1716 int port = BP_PORT(bp);
1717 u32 load_code;
1718 int i, rc;
1719
1720 #ifdef BNX2X_STOP_ON_ERROR
1721 if (unlikely(bp->panic))
1722 return -EPERM;
1723 #endif
1724
1725 bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
1726
1727 /* Set the initial link reported state to link down */
1728 bnx2x_acquire_phy_lock(bp);
1729 memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
1730 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1731 &bp->last_reported_link.link_report_flags);
1732 bnx2x_release_phy_lock(bp);
1733
1734 /* must be called before memory allocation and HW init */
1735 bnx2x_ilt_set_info(bp);
1736
1737 /*
1738 * Zero fastpath structures preserving invariants like napi, which are
1739 * allocated only once, fp index, max_cos, bp pointer.
1740 * Also set fp->disable_tpa.
1741 */
1742 for_each_queue(bp, i)
1743 bnx2x_bz_fp(bp, i);
1744
1745
1746 /* Set the receive queues buffer size */
1747 bnx2x_set_rx_buf_size(bp);
1748
1749 if (bnx2x_alloc_mem(bp))
1750 return -ENOMEM;
1751
1752 /* As long as bnx2x_alloc_mem() may possibly update
1753 * bp->num_queues, bnx2x_set_real_num_queues() should always
1754 * come after it.
1755 */
1756 rc = bnx2x_set_real_num_queues(bp);
1757 if (rc) {
1758 BNX2X_ERR("Unable to set real_num_queues\n");
1759 LOAD_ERROR_EXIT(bp, load_error0);
1760 }
1761
1762 /* configure multi cos mappings in kernel.
1763 * this configuration may be overriden by a multi class queue discipline
1764 * or by a dcbx negotiation result.
1765 */
1766 bnx2x_setup_tc(bp->dev, bp->max_cos);
1767
1768 bnx2x_napi_enable(bp);
1769
1770 /* Send LOAD_REQUEST command to MCP
1771 * Returns the type of LOAD command:
1772 * if it is the first port to be initialized
1773 * common blocks should be initialized, otherwise - not
1774 */
1775 if (!BP_NOMCP(bp)) {
1776 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0);
1777 if (!load_code) {
1778 BNX2X_ERR("MCP response failure, aborting\n");
1779 rc = -EBUSY;
1780 LOAD_ERROR_EXIT(bp, load_error1);
1781 }
1782 if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) {
1783 rc = -EBUSY; /* other port in diagnostic mode */
1784 LOAD_ERROR_EXIT(bp, load_error1);
1785 }
1786
1787 } else {
1788 int path = BP_PATH(bp);
1789
1790 DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
1791 path, load_count[path][0], load_count[path][1],
1792 load_count[path][2]);
1793 load_count[path][0]++;
1794 load_count[path][1 + port]++;
1795 DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
1796 path, load_count[path][0], load_count[path][1],
1797 load_count[path][2]);
1798 if (load_count[path][0] == 1)
1799 load_code = FW_MSG_CODE_DRV_LOAD_COMMON;
1800 else if (load_count[path][1 + port] == 1)
1801 load_code = FW_MSG_CODE_DRV_LOAD_PORT;
1802 else
1803 load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION;
1804 }
1805
1806 if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
1807 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
1808 (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
1809 bp->port.pmf = 1;
1810 /*
1811 * We need the barrier to ensure the ordering between the
1812 * writing to bp->port.pmf here and reading it from the
1813 * bnx2x_periodic_task().
1814 */
1815 smp_mb();
1816 queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
1817 } else
1818 bp->port.pmf = 0;
1819
1820 DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
1821
1822 /* Init Function state controlling object */
1823 bnx2x__init_func_obj(bp);
1824
1825 /* Initialize HW */
1826 rc = bnx2x_init_hw(bp, load_code);
1827 if (rc) {
1828 BNX2X_ERR("HW init failed, aborting\n");
1829 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1830 LOAD_ERROR_EXIT(bp, load_error2);
1831 }
1832
1833 /* Connect to IRQs */
1834 rc = bnx2x_setup_irqs(bp);
1835 if (rc) {
1836 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1837 LOAD_ERROR_EXIT(bp, load_error2);
1838 }
1839
1840 /* Setup NIC internals and enable interrupts */
1841 bnx2x_nic_init(bp, load_code);
1842
1843 /* Init per-function objects */
1844 bnx2x_init_bp_objs(bp);
1845
1846 if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
1847 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
1848 (bp->common.shmem2_base)) {
1849 if (SHMEM2_HAS(bp, dcc_support))
1850 SHMEM2_WR(bp, dcc_support,
1851 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
1852 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
1853 }
1854
1855 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
1856 rc = bnx2x_func_start(bp);
1857 if (rc) {
1858 BNX2X_ERR("Function start failed!\n");
1859 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1860 LOAD_ERROR_EXIT(bp, load_error3);
1861 }
1862
1863 /* Send LOAD_DONE command to MCP */
1864 if (!BP_NOMCP(bp)) {
1865 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1866 if (!load_code) {
1867 BNX2X_ERR("MCP response failure, aborting\n");
1868 rc = -EBUSY;
1869 LOAD_ERROR_EXIT(bp, load_error3);
1870 }
1871 }
1872
1873 rc = bnx2x_setup_leading(bp);
1874 if (rc) {
1875 BNX2X_ERR("Setup leading failed!\n");
1876 LOAD_ERROR_EXIT(bp, load_error3);
1877 }
1878
1879 #ifdef BCM_CNIC
1880 /* Enable Timer scan */
1881 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
1882 #endif
1883
1884 for_each_nondefault_queue(bp, i) {
1885 rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
1886 if (rc)
1887 LOAD_ERROR_EXIT(bp, load_error4);
1888 }
1889
1890 rc = bnx2x_init_rss_pf(bp);
1891 if (rc)
1892 LOAD_ERROR_EXIT(bp, load_error4);
1893
1894 /* Now when Clients are configured we are ready to work */
1895 bp->state = BNX2X_STATE_OPEN;
1896
1897 /* Configure a ucast MAC */
1898 rc = bnx2x_set_eth_mac(bp, true);
1899 if (rc)
1900 LOAD_ERROR_EXIT(bp, load_error4);
1901
1902 if (bp->pending_max) {
1903 bnx2x_update_max_mf_config(bp, bp->pending_max);
1904 bp->pending_max = 0;
1905 }
1906
1907 if (bp->port.pmf)
1908 bnx2x_initial_phy_init(bp, load_mode);
1909
1910 /* Start fast path */
1911
1912 /* Initialize Rx filter. */
1913 netif_addr_lock_bh(bp->dev);
1914 bnx2x_set_rx_mode(bp->dev);
1915 netif_addr_unlock_bh(bp->dev);
1916
1917 /* Start the Tx */
1918 switch (load_mode) {
1919 case LOAD_NORMAL:
1920 /* Tx queue should be only reenabled */
1921 netif_tx_wake_all_queues(bp->dev);
1922 break;
1923
1924 case LOAD_OPEN:
1925 netif_tx_start_all_queues(bp->dev);
1926 smp_mb__after_clear_bit();
1927 break;
1928
1929 case LOAD_DIAG:
1930 bp->state = BNX2X_STATE_DIAG;
1931 break;
1932
1933 default:
1934 break;
1935 }
1936
1937 if (bp->port.pmf)
1938 bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 0);
1939 else
1940 bnx2x__link_status_update(bp);
1941
1942 /* start the timer */
1943 mod_timer(&bp->timer, jiffies + bp->current_interval);
1944
1945 #ifdef BCM_CNIC
1946 /* re-read iscsi info */
1947 bnx2x_get_iscsi_info(bp);
1948 bnx2x_setup_cnic_irq_info(bp);
1949 if (bp->state == BNX2X_STATE_OPEN)
1950 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
1951 #endif
1952 bnx2x_inc_load_cnt(bp);
1953
1954 /* Wait for all pending SP commands to complete */
1955 if (!bnx2x_wait_sp_comp(bp, ~0x0UL)) {
1956 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
1957 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
1958 return -EBUSY;
1959 }
1960
1961 bnx2x_dcbx_init(bp);
1962 return 0;
1963
1964 #ifndef BNX2X_STOP_ON_ERROR
1965 load_error4:
1966 #ifdef BCM_CNIC
1967 /* Disable Timer scan */
1968 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
1969 #endif
1970 load_error3:
1971 bnx2x_int_disable_sync(bp, 1);
1972
1973 /* Clean queueable objects */
1974 bnx2x_squeeze_objects(bp);
1975
1976 /* Free SKBs, SGEs, TPA pool and driver internals */
1977 bnx2x_free_skbs(bp);
1978 for_each_rx_queue(bp, i)
1979 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
1980
1981 /* Release IRQs */
1982 bnx2x_free_irq(bp);
1983 load_error2:
1984 if (!BP_NOMCP(bp)) {
1985 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
1986 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
1987 }
1988
1989 bp->port.pmf = 0;
1990 load_error1:
1991 bnx2x_napi_disable(bp);
1992 load_error0:
1993 bnx2x_free_mem(bp);
1994
1995 return rc;
1996 #endif /* ! BNX2X_STOP_ON_ERROR */
1997 }
1998
1999 /* must be called with rtnl_lock */
2000 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
2001 {
2002 int i;
2003 bool global = false;
2004
2005 if ((bp->state == BNX2X_STATE_CLOSED) ||
2006 (bp->state == BNX2X_STATE_ERROR)) {
2007 /* We can get here if the driver has been unloaded
2008 * during parity error recovery and is either waiting for a
2009 * leader to complete or for other functions to unload and
2010 * then ifdown has been issued. In this case we want to
2011 * unload and let other functions to complete a recovery
2012 * process.
2013 */
2014 bp->recovery_state = BNX2X_RECOVERY_DONE;
2015 bp->is_leader = 0;
2016 bnx2x_release_leader_lock(bp);
2017 smp_mb();
2018
2019 DP(NETIF_MSG_HW, "Releasing a leadership...\n");
2020
2021 return -EINVAL;
2022 }
2023
2024 /*
2025 * It's important to set the bp->state to the value different from
2026 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
2027 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
2028 */
2029 bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
2030 smp_mb();
2031
2032 /* Stop Tx */
2033 bnx2x_tx_disable(bp);
2034
2035 #ifdef BCM_CNIC
2036 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
2037 #endif
2038
2039 bp->rx_mode = BNX2X_RX_MODE_NONE;
2040
2041 del_timer_sync(&bp->timer);
2042
2043 /* Set ALWAYS_ALIVE bit in shmem */
2044 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
2045
2046 bnx2x_drv_pulse(bp);
2047
2048 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
2049
2050 /* Cleanup the chip if needed */
2051 if (unload_mode != UNLOAD_RECOVERY)
2052 bnx2x_chip_cleanup(bp, unload_mode);
2053 else {
2054 /* Send the UNLOAD_REQUEST to the MCP */
2055 bnx2x_send_unload_req(bp, unload_mode);
2056
2057 /*
2058 * Prevent transactions to host from the functions on the
2059 * engine that doesn't reset global blocks in case of global
2060 * attention once gloabl blocks are reset and gates are opened
2061 * (the engine which leader will perform the recovery
2062 * last).
2063 */
2064 if (!CHIP_IS_E1x(bp))
2065 bnx2x_pf_disable(bp);
2066
2067 /* Disable HW interrupts, NAPI */
2068 bnx2x_netif_stop(bp, 1);
2069
2070 /* Release IRQs */
2071 bnx2x_free_irq(bp);
2072
2073 /* Report UNLOAD_DONE to MCP */
2074 bnx2x_send_unload_done(bp);
2075 }
2076
2077 /*
2078 * At this stage no more interrupts will arrive so we may safly clean
2079 * the queueable objects here in case they failed to get cleaned so far.
2080 */
2081 bnx2x_squeeze_objects(bp);
2082
2083 /* There should be no more pending SP commands at this stage */
2084 bp->sp_state = 0;
2085
2086 bp->port.pmf = 0;
2087
2088 /* Free SKBs, SGEs, TPA pool and driver internals */
2089 bnx2x_free_skbs(bp);
2090 for_each_rx_queue(bp, i)
2091 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2092
2093 bnx2x_free_mem(bp);
2094
2095 bp->state = BNX2X_STATE_CLOSED;
2096
2097 /* Check if there are pending parity attentions. If there are - set
2098 * RECOVERY_IN_PROGRESS.
2099 */
2100 if (bnx2x_chk_parity_attn(bp, &global, false)) {
2101 bnx2x_set_reset_in_progress(bp);
2102
2103 /* Set RESET_IS_GLOBAL if needed */
2104 if (global)
2105 bnx2x_set_reset_global(bp);
2106 }
2107
2108
2109 /* The last driver must disable a "close the gate" if there is no
2110 * parity attention or "process kill" pending.
2111 */
2112 if (!bnx2x_dec_load_cnt(bp) && bnx2x_reset_is_done(bp, BP_PATH(bp)))
2113 bnx2x_disable_close_the_gate(bp);
2114
2115 return 0;
2116 }
2117
2118 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
2119 {
2120 u16 pmcsr;
2121
2122 /* If there is no power capability, silently succeed */
2123 if (!bp->pm_cap) {
2124 DP(NETIF_MSG_HW, "No power capability. Breaking.\n");
2125 return 0;
2126 }
2127
2128 pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr);
2129
2130 switch (state) {
2131 case PCI_D0:
2132 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2133 ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
2134 PCI_PM_CTRL_PME_STATUS));
2135
2136 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
2137 /* delay required during transition out of D3hot */
2138 msleep(20);
2139 break;
2140
2141 case PCI_D3hot:
2142 /* If there are other clients above don't
2143 shut down the power */
2144 if (atomic_read(&bp->pdev->enable_cnt) != 1)
2145 return 0;
2146 /* Don't shut down the power for emulation and FPGA */
2147 if (CHIP_REV_IS_SLOW(bp))
2148 return 0;
2149
2150 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2151 pmcsr |= 3;
2152
2153 if (bp->wol)
2154 pmcsr |= PCI_PM_CTRL_PME_ENABLE;
2155
2156 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2157 pmcsr);
2158
2159 /* No more memory access after this point until
2160 * device is brought back to D0.
2161 */
2162 break;
2163
2164 default:
2165 return -EINVAL;
2166 }
2167 return 0;
2168 }
2169
2170 /*
2171 * net_device service functions
2172 */
2173 int bnx2x_poll(struct napi_struct *napi, int budget)
2174 {
2175 int work_done = 0;
2176 u8 cos;
2177 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
2178 napi);
2179 struct bnx2x *bp = fp->bp;
2180
2181 while (1) {
2182 #ifdef BNX2X_STOP_ON_ERROR
2183 if (unlikely(bp->panic)) {
2184 napi_complete(napi);
2185 return 0;
2186 }
2187 #endif
2188
2189 for_each_cos_in_tx_queue(fp, cos)
2190 if (bnx2x_tx_queue_has_work(&fp->txdata[cos]))
2191 bnx2x_tx_int(bp, &fp->txdata[cos]);
2192
2193
2194 if (bnx2x_has_rx_work(fp)) {
2195 work_done += bnx2x_rx_int(fp, budget - work_done);
2196
2197 /* must not complete if we consumed full budget */
2198 if (work_done >= budget)
2199 break;
2200 }
2201
2202 /* Fall out from the NAPI loop if needed */
2203 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2204 #ifdef BCM_CNIC
2205 /* No need to update SB for FCoE L2 ring as long as
2206 * it's connected to the default SB and the SB
2207 * has been updated when NAPI was scheduled.
2208 */
2209 if (IS_FCOE_FP(fp)) {
2210 napi_complete(napi);
2211 break;
2212 }
2213 #endif
2214
2215 bnx2x_update_fpsb_idx(fp);
2216 /* bnx2x_has_rx_work() reads the status block,
2217 * thus we need to ensure that status block indices
2218 * have been actually read (bnx2x_update_fpsb_idx)
2219 * prior to this check (bnx2x_has_rx_work) so that
2220 * we won't write the "newer" value of the status block
2221 * to IGU (if there was a DMA right after
2222 * bnx2x_has_rx_work and if there is no rmb, the memory
2223 * reading (bnx2x_update_fpsb_idx) may be postponed
2224 * to right before bnx2x_ack_sb). In this case there
2225 * will never be another interrupt until there is
2226 * another update of the status block, while there
2227 * is still unhandled work.
2228 */
2229 rmb();
2230
2231 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2232 napi_complete(napi);
2233 /* Re-enable interrupts */
2234 DP(NETIF_MSG_HW,
2235 "Update index to %d\n", fp->fp_hc_idx);
2236 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
2237 le16_to_cpu(fp->fp_hc_idx),
2238 IGU_INT_ENABLE, 1);
2239 break;
2240 }
2241 }
2242 }
2243
2244 return work_done;
2245 }
2246
2247 /* we split the first BD into headers and data BDs
2248 * to ease the pain of our fellow microcode engineers
2249 * we use one mapping for both BDs
2250 * So far this has only been observed to happen
2251 * in Other Operating Systems(TM)
2252 */
2253 static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
2254 struct bnx2x_fp_txdata *txdata,
2255 struct sw_tx_bd *tx_buf,
2256 struct eth_tx_start_bd **tx_bd, u16 hlen,
2257 u16 bd_prod, int nbd)
2258 {
2259 struct eth_tx_start_bd *h_tx_bd = *tx_bd;
2260 struct eth_tx_bd *d_tx_bd;
2261 dma_addr_t mapping;
2262 int old_len = le16_to_cpu(h_tx_bd->nbytes);
2263
2264 /* first fix first BD */
2265 h_tx_bd->nbd = cpu_to_le16(nbd);
2266 h_tx_bd->nbytes = cpu_to_le16(hlen);
2267
2268 DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d "
2269 "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi,
2270 h_tx_bd->addr_lo, h_tx_bd->nbd);
2271
2272 /* now get a new data BD
2273 * (after the pbd) and fill it */
2274 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2275 d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2276
2277 mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
2278 le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
2279
2280 d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2281 d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2282 d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
2283
2284 /* this marks the BD as one that has no individual mapping */
2285 tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
2286
2287 DP(NETIF_MSG_TX_QUEUED,
2288 "TSO split data size is %d (%x:%x)\n",
2289 d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
2290
2291 /* update tx_bd */
2292 *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
2293
2294 return bd_prod;
2295 }
2296
2297 static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
2298 {
2299 if (fix > 0)
2300 csum = (u16) ~csum_fold(csum_sub(csum,
2301 csum_partial(t_header - fix, fix, 0)));
2302
2303 else if (fix < 0)
2304 csum = (u16) ~csum_fold(csum_add(csum,
2305 csum_partial(t_header, -fix, 0)));
2306
2307 return swab16(csum);
2308 }
2309
2310 static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
2311 {
2312 u32 rc;
2313
2314 if (skb->ip_summed != CHECKSUM_PARTIAL)
2315 rc = XMIT_PLAIN;
2316
2317 else {
2318 if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) {
2319 rc = XMIT_CSUM_V6;
2320 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2321 rc |= XMIT_CSUM_TCP;
2322
2323 } else {
2324 rc = XMIT_CSUM_V4;
2325 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2326 rc |= XMIT_CSUM_TCP;
2327 }
2328 }
2329
2330 if (skb_is_gso_v6(skb))
2331 rc |= XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6;
2332 else if (skb_is_gso(skb))
2333 rc |= XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP;
2334
2335 return rc;
2336 }
2337
2338 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2339 /* check if packet requires linearization (packet is too fragmented)
2340 no need to check fragmentation if page size > 8K (there will be no
2341 violation to FW restrictions) */
2342 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
2343 u32 xmit_type)
2344 {
2345 int to_copy = 0;
2346 int hlen = 0;
2347 int first_bd_sz = 0;
2348
2349 /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
2350 if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
2351
2352 if (xmit_type & XMIT_GSO) {
2353 unsigned short lso_mss = skb_shinfo(skb)->gso_size;
2354 /* Check if LSO packet needs to be copied:
2355 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
2356 int wnd_size = MAX_FETCH_BD - 3;
2357 /* Number of windows to check */
2358 int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
2359 int wnd_idx = 0;
2360 int frag_idx = 0;
2361 u32 wnd_sum = 0;
2362
2363 /* Headers length */
2364 hlen = (int)(skb_transport_header(skb) - skb->data) +
2365 tcp_hdrlen(skb);
2366
2367 /* Amount of data (w/o headers) on linear part of SKB*/
2368 first_bd_sz = skb_headlen(skb) - hlen;
2369
2370 wnd_sum = first_bd_sz;
2371
2372 /* Calculate the first sum - it's special */
2373 for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
2374 wnd_sum +=
2375 skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
2376
2377 /* If there was data on linear skb data - check it */
2378 if (first_bd_sz > 0) {
2379 if (unlikely(wnd_sum < lso_mss)) {
2380 to_copy = 1;
2381 goto exit_lbl;
2382 }
2383
2384 wnd_sum -= first_bd_sz;
2385 }
2386
2387 /* Others are easier: run through the frag list and
2388 check all windows */
2389 for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
2390 wnd_sum +=
2391 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
2392
2393 if (unlikely(wnd_sum < lso_mss)) {
2394 to_copy = 1;
2395 break;
2396 }
2397 wnd_sum -=
2398 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
2399 }
2400 } else {
2401 /* in non-LSO too fragmented packet should always
2402 be linearized */
2403 to_copy = 1;
2404 }
2405 }
2406
2407 exit_lbl:
2408 if (unlikely(to_copy))
2409 DP(NETIF_MSG_TX_QUEUED,
2410 "Linearization IS REQUIRED for %s packet. "
2411 "num_frags %d hlen %d first_bd_sz %d\n",
2412 (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
2413 skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
2414
2415 return to_copy;
2416 }
2417 #endif
2418
2419 static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
2420 u32 xmit_type)
2421 {
2422 *parsing_data |= (skb_shinfo(skb)->gso_size <<
2423 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
2424 ETH_TX_PARSE_BD_E2_LSO_MSS;
2425 if ((xmit_type & XMIT_GSO_V6) &&
2426 (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
2427 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
2428 }
2429
2430 /**
2431 * bnx2x_set_pbd_gso - update PBD in GSO case.
2432 *
2433 * @skb: packet skb
2434 * @pbd: parse BD
2435 * @xmit_type: xmit flags
2436 */
2437 static inline void bnx2x_set_pbd_gso(struct sk_buff *skb,
2438 struct eth_tx_parse_bd_e1x *pbd,
2439 u32 xmit_type)
2440 {
2441 pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
2442 pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq);
2443 pbd->tcp_flags = pbd_tcp_flags(skb);
2444
2445 if (xmit_type & XMIT_GSO_V4) {
2446 pbd->ip_id = swab16(ip_hdr(skb)->id);
2447 pbd->tcp_pseudo_csum =
2448 swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
2449 ip_hdr(skb)->daddr,
2450 0, IPPROTO_TCP, 0));
2451
2452 } else
2453 pbd->tcp_pseudo_csum =
2454 swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2455 &ipv6_hdr(skb)->daddr,
2456 0, IPPROTO_TCP, 0));
2457
2458 pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN;
2459 }
2460
2461 /**
2462 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
2463 *
2464 * @bp: driver handle
2465 * @skb: packet skb
2466 * @parsing_data: data to be updated
2467 * @xmit_type: xmit flags
2468 *
2469 * 57712 related
2470 */
2471 static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
2472 u32 *parsing_data, u32 xmit_type)
2473 {
2474 *parsing_data |=
2475 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
2476 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) &
2477 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W;
2478
2479 if (xmit_type & XMIT_CSUM_TCP) {
2480 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
2481 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
2482 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
2483
2484 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
2485 } else
2486 /* We support checksum offload for TCP and UDP only.
2487 * No need to pass the UDP header length - it's a constant.
2488 */
2489 return skb_transport_header(skb) +
2490 sizeof(struct udphdr) - skb->data;
2491 }
2492
2493 static inline void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2494 struct eth_tx_start_bd *tx_start_bd, u32 xmit_type)
2495 {
2496 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
2497
2498 if (xmit_type & XMIT_CSUM_V4)
2499 tx_start_bd->bd_flags.as_bitfield |=
2500 ETH_TX_BD_FLAGS_IP_CSUM;
2501 else
2502 tx_start_bd->bd_flags.as_bitfield |=
2503 ETH_TX_BD_FLAGS_IPV6;
2504
2505 if (!(xmit_type & XMIT_CSUM_TCP))
2506 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
2507 }
2508
2509 /**
2510 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
2511 *
2512 * @bp: driver handle
2513 * @skb: packet skb
2514 * @pbd: parse BD to be updated
2515 * @xmit_type: xmit flags
2516 */
2517 static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2518 struct eth_tx_parse_bd_e1x *pbd,
2519 u32 xmit_type)
2520 {
2521 u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
2522
2523 /* for now NS flag is not used in Linux */
2524 pbd->global_data =
2525 (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
2526 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
2527
2528 pbd->ip_hlen_w = (skb_transport_header(skb) -
2529 skb_network_header(skb)) >> 1;
2530
2531 hlen += pbd->ip_hlen_w;
2532
2533 /* We support checksum offload for TCP and UDP only */
2534 if (xmit_type & XMIT_CSUM_TCP)
2535 hlen += tcp_hdrlen(skb) / 2;
2536 else
2537 hlen += sizeof(struct udphdr) / 2;
2538
2539 pbd->total_hlen_w = cpu_to_le16(hlen);
2540 hlen = hlen*2;
2541
2542 if (xmit_type & XMIT_CSUM_TCP) {
2543 pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check);
2544
2545 } else {
2546 s8 fix = SKB_CS_OFF(skb); /* signed! */
2547
2548 DP(NETIF_MSG_TX_QUEUED,
2549 "hlen %d fix %d csum before fix %x\n",
2550 le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
2551
2552 /* HW bug: fixup the CSUM */
2553 pbd->tcp_pseudo_csum =
2554 bnx2x_csum_fix(skb_transport_header(skb),
2555 SKB_CS(skb), fix);
2556
2557 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
2558 pbd->tcp_pseudo_csum);
2559 }
2560
2561 return hlen;
2562 }
2563
2564 /* called with netif_tx_lock
2565 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
2566 * netif_wake_queue()
2567 */
2568 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
2569 {
2570 struct bnx2x *bp = netdev_priv(dev);
2571
2572 struct bnx2x_fastpath *fp;
2573 struct netdev_queue *txq;
2574 struct bnx2x_fp_txdata *txdata;
2575 struct sw_tx_bd *tx_buf;
2576 struct eth_tx_start_bd *tx_start_bd, *first_bd;
2577 struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
2578 struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
2579 struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
2580 u32 pbd_e2_parsing_data = 0;
2581 u16 pkt_prod, bd_prod;
2582 int nbd, txq_index, fp_index, txdata_index;
2583 dma_addr_t mapping;
2584 u32 xmit_type = bnx2x_xmit_type(bp, skb);
2585 int i;
2586 u8 hlen = 0;
2587 __le16 pkt_size = 0;
2588 struct ethhdr *eth;
2589 u8 mac_type = UNICAST_ADDRESS;
2590
2591 #ifdef BNX2X_STOP_ON_ERROR
2592 if (unlikely(bp->panic))
2593 return NETDEV_TX_BUSY;
2594 #endif
2595
2596 txq_index = skb_get_queue_mapping(skb);
2597 txq = netdev_get_tx_queue(dev, txq_index);
2598
2599 BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + FCOE_PRESENT);
2600
2601 /* decode the fastpath index and the cos index from the txq */
2602 fp_index = TXQ_TO_FP(txq_index);
2603 txdata_index = TXQ_TO_COS(txq_index);
2604
2605 #ifdef BCM_CNIC
2606 /*
2607 * Override the above for the FCoE queue:
2608 * - FCoE fp entry is right after the ETH entries.
2609 * - FCoE L2 queue uses bp->txdata[0] only.
2610 */
2611 if (unlikely(!NO_FCOE(bp) && (txq_index ==
2612 bnx2x_fcoe_tx(bp, txq_index)))) {
2613 fp_index = FCOE_IDX;
2614 txdata_index = 0;
2615 }
2616 #endif
2617
2618 /* enable this debug print to view the transmission queue being used
2619 DP(BNX2X_MSG_FP, "indices: txq %d, fp %d, txdata %d\n",
2620 txq_index, fp_index, txdata_index); */
2621
2622 /* locate the fastpath and the txdata */
2623 fp = &bp->fp[fp_index];
2624 txdata = &fp->txdata[txdata_index];
2625
2626 /* enable this debug print to view the tranmission details
2627 DP(BNX2X_MSG_FP,"transmitting packet cid %d fp index %d txdata_index %d"
2628 " tx_data ptr %p fp pointer %p\n",
2629 txdata->cid, fp_index, txdata_index, txdata, fp); */
2630
2631 if (unlikely(bnx2x_tx_avail(bp, txdata) <
2632 (skb_shinfo(skb)->nr_frags + 3))) {
2633 fp->eth_q_stats.driver_xoff++;
2634 netif_tx_stop_queue(txq);
2635 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
2636 return NETDEV_TX_BUSY;
2637 }
2638
2639 DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x "
2640 "protocol(%x,%x) gso type %x xmit_type %x\n",
2641 txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
2642 ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
2643
2644 eth = (struct ethhdr *)skb->data;
2645
2646 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
2647 if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
2648 if (is_broadcast_ether_addr(eth->h_dest))
2649 mac_type = BROADCAST_ADDRESS;
2650 else
2651 mac_type = MULTICAST_ADDRESS;
2652 }
2653
2654 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2655 /* First, check if we need to linearize the skb (due to FW
2656 restrictions). No need to check fragmentation if page size > 8K
2657 (there will be no violation to FW restrictions) */
2658 if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
2659 /* Statistics of linearization */
2660 bp->lin_cnt++;
2661 if (skb_linearize(skb) != 0) {
2662 DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - "
2663 "silently dropping this SKB\n");
2664 dev_kfree_skb_any(skb);
2665 return NETDEV_TX_OK;
2666 }
2667 }
2668 #endif
2669 /* Map skb linear data for DMA */
2670 mapping = dma_map_single(&bp->pdev->dev, skb->data,
2671 skb_headlen(skb), DMA_TO_DEVICE);
2672 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
2673 DP(NETIF_MSG_TX_QUEUED, "SKB mapping failed - "
2674 "silently dropping this SKB\n");
2675 dev_kfree_skb_any(skb);
2676 return NETDEV_TX_OK;
2677 }
2678 /*
2679 Please read carefully. First we use one BD which we mark as start,
2680 then we have a parsing info BD (used for TSO or xsum),
2681 and only then we have the rest of the TSO BDs.
2682 (don't forget to mark the last one as last,
2683 and to unmap only AFTER you write to the BD ...)
2684 And above all, all pdb sizes are in words - NOT DWORDS!
2685 */
2686
2687 /* get current pkt produced now - advance it just before sending packet
2688 * since mapping of pages may fail and cause packet to be dropped
2689 */
2690 pkt_prod = txdata->tx_pkt_prod;
2691 bd_prod = TX_BD(txdata->tx_bd_prod);
2692
2693 /* get a tx_buf and first BD
2694 * tx_start_bd may be changed during SPLIT,
2695 * but first_bd will always stay first
2696 */
2697 tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
2698 tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
2699 first_bd = tx_start_bd;
2700
2701 tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
2702 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_ETH_ADDR_TYPE,
2703 mac_type);
2704
2705 /* header nbd */
2706 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1);
2707
2708 /* remember the first BD of the packet */
2709 tx_buf->first_bd = txdata->tx_bd_prod;
2710 tx_buf->skb = skb;
2711 tx_buf->flags = 0;
2712
2713 DP(NETIF_MSG_TX_QUEUED,
2714 "sending pkt %u @%p next_idx %u bd %u @%p\n",
2715 pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
2716
2717 if (vlan_tx_tag_present(skb)) {
2718 tx_start_bd->vlan_or_ethertype =
2719 cpu_to_le16(vlan_tx_tag_get(skb));
2720 tx_start_bd->bd_flags.as_bitfield |=
2721 (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
2722 } else
2723 tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
2724
2725 /* turn on parsing and get a BD */
2726 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2727
2728 if (xmit_type & XMIT_CSUM)
2729 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
2730
2731 if (!CHIP_IS_E1x(bp)) {
2732 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
2733 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
2734 /* Set PBD in checksum offload case */
2735 if (xmit_type & XMIT_CSUM)
2736 hlen = bnx2x_set_pbd_csum_e2(bp, skb,
2737 &pbd_e2_parsing_data,
2738 xmit_type);
2739 if (IS_MF_SI(bp)) {
2740 /*
2741 * fill in the MAC addresses in the PBD - for local
2742 * switching
2743 */
2744 bnx2x_set_fw_mac_addr(&pbd_e2->src_mac_addr_hi,
2745 &pbd_e2->src_mac_addr_mid,
2746 &pbd_e2->src_mac_addr_lo,
2747 eth->h_source);
2748 bnx2x_set_fw_mac_addr(&pbd_e2->dst_mac_addr_hi,
2749 &pbd_e2->dst_mac_addr_mid,
2750 &pbd_e2->dst_mac_addr_lo,
2751 eth->h_dest);
2752 }
2753 } else {
2754 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
2755 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
2756 /* Set PBD in checksum offload case */
2757 if (xmit_type & XMIT_CSUM)
2758 hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
2759
2760 }
2761
2762 /* Setup the data pointer of the first BD of the packet */
2763 tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2764 tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2765 nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
2766 tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
2767 pkt_size = tx_start_bd->nbytes;
2768
2769 DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d"
2770 " nbytes %d flags %x vlan %x\n",
2771 tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
2772 le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes),
2773 tx_start_bd->bd_flags.as_bitfield,
2774 le16_to_cpu(tx_start_bd->vlan_or_ethertype));
2775
2776 if (xmit_type & XMIT_GSO) {
2777
2778 DP(NETIF_MSG_TX_QUEUED,
2779 "TSO packet len %d hlen %d total len %d tso size %d\n",
2780 skb->len, hlen, skb_headlen(skb),
2781 skb_shinfo(skb)->gso_size);
2782
2783 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
2784
2785 if (unlikely(skb_headlen(skb) > hlen))
2786 bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
2787 &tx_start_bd, hlen,
2788 bd_prod, ++nbd);
2789 if (!CHIP_IS_E1x(bp))
2790 bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
2791 xmit_type);
2792 else
2793 bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
2794 }
2795
2796 /* Set the PBD's parsing_data field if not zero
2797 * (for the chips newer than 57711).
2798 */
2799 if (pbd_e2_parsing_data)
2800 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
2801
2802 tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
2803
2804 /* Handle fragmented skb */
2805 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2806 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2807
2808 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
2809 skb_frag_size(frag), DMA_TO_DEVICE);
2810 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
2811 unsigned int pkts_compl = 0, bytes_compl = 0;
2812
2813 DP(NETIF_MSG_TX_QUEUED, "Unable to map page - "
2814 "dropping packet...\n");
2815
2816 /* we need unmap all buffers already mapped
2817 * for this SKB;
2818 * first_bd->nbd need to be properly updated
2819 * before call to bnx2x_free_tx_pkt
2820 */
2821 first_bd->nbd = cpu_to_le16(nbd);
2822 bnx2x_free_tx_pkt(bp, txdata,
2823 TX_BD(txdata->tx_pkt_prod),
2824 &pkts_compl, &bytes_compl);
2825 return NETDEV_TX_OK;
2826 }
2827
2828 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2829 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2830 if (total_pkt_bd == NULL)
2831 total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2832
2833 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2834 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2835 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
2836 le16_add_cpu(&pkt_size, skb_frag_size(frag));
2837 nbd++;
2838
2839 DP(NETIF_MSG_TX_QUEUED,
2840 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
2841 i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
2842 le16_to_cpu(tx_data_bd->nbytes));
2843 }
2844
2845 DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
2846
2847 /* update with actual num BDs */
2848 first_bd->nbd = cpu_to_le16(nbd);
2849
2850 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2851
2852 /* now send a tx doorbell, counting the next BD
2853 * if the packet contains or ends with it
2854 */
2855 if (TX_BD_POFF(bd_prod) < nbd)
2856 nbd++;
2857
2858 /* total_pkt_bytes should be set on the first data BD if
2859 * it's not an LSO packet and there is more than one
2860 * data BD. In this case pkt_size is limited by an MTU value.
2861 * However we prefer to set it for an LSO packet (while we don't
2862 * have to) in order to save some CPU cycles in a none-LSO
2863 * case, when we much more care about them.
2864 */
2865 if (total_pkt_bd != NULL)
2866 total_pkt_bd->total_pkt_bytes = pkt_size;
2867
2868 if (pbd_e1x)
2869 DP(NETIF_MSG_TX_QUEUED,
2870 "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u"
2871 " tcp_flags %x xsum %x seq %u hlen %u\n",
2872 pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
2873 pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
2874 pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
2875 le16_to_cpu(pbd_e1x->total_hlen_w));
2876 if (pbd_e2)
2877 DP(NETIF_MSG_TX_QUEUED,
2878 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
2879 pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid,
2880 pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi,
2881 pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo,
2882 pbd_e2->parsing_data);
2883 DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
2884
2885 netdev_tx_sent_queue(txq, skb->len);
2886
2887 txdata->tx_pkt_prod++;
2888 /*
2889 * Make sure that the BD data is updated before updating the producer
2890 * since FW might read the BD right after the producer is updated.
2891 * This is only applicable for weak-ordered memory model archs such
2892 * as IA-64. The following barrier is also mandatory since FW will
2893 * assumes packets must have BDs.
2894 */
2895 wmb();
2896
2897 txdata->tx_db.data.prod += nbd;
2898 barrier();
2899
2900 DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
2901
2902 mmiowb();
2903
2904 txdata->tx_bd_prod += nbd;
2905
2906 if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_SKB_FRAGS + 3)) {
2907 netif_tx_stop_queue(txq);
2908
2909 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
2910 * ordering of set_bit() in netif_tx_stop_queue() and read of
2911 * fp->bd_tx_cons */
2912 smp_mb();
2913
2914 fp->eth_q_stats.driver_xoff++;
2915 if (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3)
2916 netif_tx_wake_queue(txq);
2917 }
2918 txdata->tx_pkt++;
2919
2920 return NETDEV_TX_OK;
2921 }
2922
2923 /**
2924 * bnx2x_setup_tc - routine to configure net_device for multi tc
2925 *
2926 * @netdev: net device to configure
2927 * @tc: number of traffic classes to enable
2928 *
2929 * callback connected to the ndo_setup_tc function pointer
2930 */
2931 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
2932 {
2933 int cos, prio, count, offset;
2934 struct bnx2x *bp = netdev_priv(dev);
2935
2936 /* setup tc must be called under rtnl lock */
2937 ASSERT_RTNL();
2938
2939 /* no traffic classes requested. aborting */
2940 if (!num_tc) {
2941 netdev_reset_tc(dev);
2942 return 0;
2943 }
2944
2945 /* requested to support too many traffic classes */
2946 if (num_tc > bp->max_cos) {
2947 DP(NETIF_MSG_TX_ERR, "support for too many traffic classes"
2948 " requested: %d. max supported is %d\n",
2949 num_tc, bp->max_cos);
2950 return -EINVAL;
2951 }
2952
2953 /* declare amount of supported traffic classes */
2954 if (netdev_set_num_tc(dev, num_tc)) {
2955 DP(NETIF_MSG_TX_ERR, "failed to declare %d traffic classes\n",
2956 num_tc);
2957 return -EINVAL;
2958 }
2959
2960 /* configure priority to traffic class mapping */
2961 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
2962 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[prio]);
2963 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n",
2964 prio, bp->prio_to_cos[prio]);
2965 }
2966
2967
2968 /* Use this configuration to diffrentiate tc0 from other COSes
2969 This can be used for ets or pfc, and save the effort of setting
2970 up a multio class queue disc or negotiating DCBX with a switch
2971 netdev_set_prio_tc_map(dev, 0, 0);
2972 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
2973 for (prio = 1; prio < 16; prio++) {
2974 netdev_set_prio_tc_map(dev, prio, 1);
2975 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
2976 } */
2977
2978 /* configure traffic class to transmission queue mapping */
2979 for (cos = 0; cos < bp->max_cos; cos++) {
2980 count = BNX2X_NUM_ETH_QUEUES(bp);
2981 offset = cos * MAX_TXQS_PER_COS;
2982 netdev_set_tc_queue(dev, cos, count, offset);
2983 DP(BNX2X_MSG_SP, "mapping tc %d to offset %d count %d\n",
2984 cos, offset, count);
2985 }
2986
2987 return 0;
2988 }
2989
2990 /* called with rtnl_lock */
2991 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
2992 {
2993 struct sockaddr *addr = p;
2994 struct bnx2x *bp = netdev_priv(dev);
2995 int rc = 0;
2996
2997 if (!bnx2x_is_valid_ether_addr(bp, addr->sa_data))
2998 return -EINVAL;
2999
3000 #ifdef BCM_CNIC
3001 if (IS_MF_ISCSI_SD(bp) && !is_zero_ether_addr(addr->sa_data))
3002 return -EINVAL;
3003 #endif
3004
3005 if (netif_running(dev)) {
3006 rc = bnx2x_set_eth_mac(bp, false);
3007 if (rc)
3008 return rc;
3009 }
3010
3011 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3012
3013 if (netif_running(dev))
3014 rc = bnx2x_set_eth_mac(bp, true);
3015
3016 return rc;
3017 }
3018
3019 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
3020 {
3021 union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
3022 struct bnx2x_fastpath *fp = &bp->fp[fp_index];
3023 u8 cos;
3024
3025 /* Common */
3026 #ifdef BCM_CNIC
3027 if (IS_FCOE_IDX(fp_index)) {
3028 memset(sb, 0, sizeof(union host_hc_status_block));
3029 fp->status_blk_mapping = 0;
3030
3031 } else {
3032 #endif
3033 /* status blocks */
3034 if (!CHIP_IS_E1x(bp))
3035 BNX2X_PCI_FREE(sb->e2_sb,
3036 bnx2x_fp(bp, fp_index,
3037 status_blk_mapping),
3038 sizeof(struct host_hc_status_block_e2));
3039 else
3040 BNX2X_PCI_FREE(sb->e1x_sb,
3041 bnx2x_fp(bp, fp_index,
3042 status_blk_mapping),
3043 sizeof(struct host_hc_status_block_e1x));
3044 #ifdef BCM_CNIC
3045 }
3046 #endif
3047 /* Rx */
3048 if (!skip_rx_queue(bp, fp_index)) {
3049 bnx2x_free_rx_bds(fp);
3050
3051 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3052 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
3053 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
3054 bnx2x_fp(bp, fp_index, rx_desc_mapping),
3055 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3056
3057 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
3058 bnx2x_fp(bp, fp_index, rx_comp_mapping),
3059 sizeof(struct eth_fast_path_rx_cqe) *
3060 NUM_RCQ_BD);
3061
3062 /* SGE ring */
3063 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
3064 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
3065 bnx2x_fp(bp, fp_index, rx_sge_mapping),
3066 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3067 }
3068
3069 /* Tx */
3070 if (!skip_tx_queue(bp, fp_index)) {
3071 /* fastpath tx rings: tx_buf tx_desc */
3072 for_each_cos_in_tx_queue(fp, cos) {
3073 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3074
3075 DP(BNX2X_MSG_SP,
3076 "freeing tx memory of fp %d cos %d cid %d\n",
3077 fp_index, cos, txdata->cid);
3078
3079 BNX2X_FREE(txdata->tx_buf_ring);
3080 BNX2X_PCI_FREE(txdata->tx_desc_ring,
3081 txdata->tx_desc_mapping,
3082 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3083 }
3084 }
3085 /* end of fastpath */
3086 }
3087
3088 void bnx2x_free_fp_mem(struct bnx2x *bp)
3089 {
3090 int i;
3091 for_each_queue(bp, i)
3092 bnx2x_free_fp_mem_at(bp, i);
3093 }
3094
3095 static inline void set_sb_shortcuts(struct bnx2x *bp, int index)
3096 {
3097 union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
3098 if (!CHIP_IS_E1x(bp)) {
3099 bnx2x_fp(bp, index, sb_index_values) =
3100 (__le16 *)status_blk.e2_sb->sb.index_values;
3101 bnx2x_fp(bp, index, sb_running_index) =
3102 (__le16 *)status_blk.e2_sb->sb.running_index;
3103 } else {
3104 bnx2x_fp(bp, index, sb_index_values) =
3105 (__le16 *)status_blk.e1x_sb->sb.index_values;
3106 bnx2x_fp(bp, index, sb_running_index) =
3107 (__le16 *)status_blk.e1x_sb->sb.running_index;
3108 }
3109 }
3110
3111 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
3112 {
3113 union host_hc_status_block *sb;
3114 struct bnx2x_fastpath *fp = &bp->fp[index];
3115 int ring_size = 0;
3116 u8 cos;
3117 int rx_ring_size = 0;
3118
3119 #ifdef BCM_CNIC
3120 if (!bp->rx_ring_size && IS_MF_ISCSI_SD(bp)) {
3121 rx_ring_size = MIN_RX_SIZE_NONTPA;
3122 bp->rx_ring_size = rx_ring_size;
3123 } else
3124 #endif
3125 if (!bp->rx_ring_size) {
3126
3127 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
3128
3129 /* allocate at least number of buffers required by FW */
3130 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
3131 MIN_RX_SIZE_TPA, rx_ring_size);
3132
3133 bp->rx_ring_size = rx_ring_size;
3134 } else /* if rx_ring_size specified - use it */
3135 rx_ring_size = bp->rx_ring_size;
3136
3137 /* Common */
3138 sb = &bnx2x_fp(bp, index, status_blk);
3139 #ifdef BCM_CNIC
3140 if (!IS_FCOE_IDX(index)) {
3141 #endif
3142 /* status blocks */
3143 if (!CHIP_IS_E1x(bp))
3144 BNX2X_PCI_ALLOC(sb->e2_sb,
3145 &bnx2x_fp(bp, index, status_blk_mapping),
3146 sizeof(struct host_hc_status_block_e2));
3147 else
3148 BNX2X_PCI_ALLOC(sb->e1x_sb,
3149 &bnx2x_fp(bp, index, status_blk_mapping),
3150 sizeof(struct host_hc_status_block_e1x));
3151 #ifdef BCM_CNIC
3152 }
3153 #endif
3154
3155 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
3156 * set shortcuts for it.
3157 */
3158 if (!IS_FCOE_IDX(index))
3159 set_sb_shortcuts(bp, index);
3160
3161 /* Tx */
3162 if (!skip_tx_queue(bp, index)) {
3163 /* fastpath tx rings: tx_buf tx_desc */
3164 for_each_cos_in_tx_queue(fp, cos) {
3165 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3166
3167 DP(BNX2X_MSG_SP, "allocating tx memory of "
3168 "fp %d cos %d\n",
3169 index, cos);
3170
3171 BNX2X_ALLOC(txdata->tx_buf_ring,
3172 sizeof(struct sw_tx_bd) * NUM_TX_BD);
3173 BNX2X_PCI_ALLOC(txdata->tx_desc_ring,
3174 &txdata->tx_desc_mapping,
3175 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3176 }
3177 }
3178
3179 /* Rx */
3180 if (!skip_rx_queue(bp, index)) {
3181 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3182 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_buf_ring),
3183 sizeof(struct sw_rx_bd) * NUM_RX_BD);
3184 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_desc_ring),
3185 &bnx2x_fp(bp, index, rx_desc_mapping),
3186 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3187
3188 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_comp_ring),
3189 &bnx2x_fp(bp, index, rx_comp_mapping),
3190 sizeof(struct eth_fast_path_rx_cqe) *
3191 NUM_RCQ_BD);
3192
3193 /* SGE ring */
3194 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_page_ring),
3195 sizeof(struct sw_rx_page) * NUM_RX_SGE);
3196 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_sge_ring),
3197 &bnx2x_fp(bp, index, rx_sge_mapping),
3198 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3199 /* RX BD ring */
3200 bnx2x_set_next_page_rx_bd(fp);
3201
3202 /* CQ ring */
3203 bnx2x_set_next_page_rx_cq(fp);
3204
3205 /* BDs */
3206 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
3207 if (ring_size < rx_ring_size)
3208 goto alloc_mem_err;
3209 }
3210
3211 return 0;
3212
3213 /* handles low memory cases */
3214 alloc_mem_err:
3215 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
3216 index, ring_size);
3217 /* FW will drop all packets if queue is not big enough,
3218 * In these cases we disable the queue
3219 * Min size is different for OOO, TPA and non-TPA queues
3220 */
3221 if (ring_size < (fp->disable_tpa ?
3222 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
3223 /* release memory allocated for this queue */
3224 bnx2x_free_fp_mem_at(bp, index);
3225 return -ENOMEM;
3226 }
3227 return 0;
3228 }
3229
3230 int bnx2x_alloc_fp_mem(struct bnx2x *bp)
3231 {
3232 int i;
3233
3234 /**
3235 * 1. Allocate FP for leading - fatal if error
3236 * 2. {CNIC} Allocate FCoE FP - fatal if error
3237 * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
3238 * 4. Allocate RSS - fix number of queues if error
3239 */
3240
3241 /* leading */
3242 if (bnx2x_alloc_fp_mem_at(bp, 0))
3243 return -ENOMEM;
3244
3245 #ifdef BCM_CNIC
3246 if (!NO_FCOE(bp))
3247 /* FCoE */
3248 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX))
3249 /* we will fail load process instead of mark
3250 * NO_FCOE_FLAG
3251 */
3252 return -ENOMEM;
3253 #endif
3254
3255 /* RSS */
3256 for_each_nondefault_eth_queue(bp, i)
3257 if (bnx2x_alloc_fp_mem_at(bp, i))
3258 break;
3259
3260 /* handle memory failures */
3261 if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
3262 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
3263
3264 WARN_ON(delta < 0);
3265 #ifdef BCM_CNIC
3266 /**
3267 * move non eth FPs next to last eth FP
3268 * must be done in that order
3269 * FCOE_IDX < FWD_IDX < OOO_IDX
3270 */
3271
3272 /* move FCoE fp even NO_FCOE_FLAG is on */
3273 bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta);
3274 #endif
3275 bp->num_queues -= delta;
3276 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
3277 bp->num_queues + delta, bp->num_queues);
3278 }
3279
3280 return 0;
3281 }
3282
3283 void bnx2x_free_mem_bp(struct bnx2x *bp)
3284 {
3285 kfree(bp->fp);
3286 kfree(bp->msix_table);
3287 kfree(bp->ilt);
3288 }
3289
3290 int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp)
3291 {
3292 struct bnx2x_fastpath *fp;
3293 struct msix_entry *tbl;
3294 struct bnx2x_ilt *ilt;
3295 int msix_table_size = 0;
3296
3297 /*
3298 * The biggest MSI-X table we might need is as a maximum number of fast
3299 * path IGU SBs plus default SB (for PF).
3300 */
3301 msix_table_size = bp->igu_sb_cnt + 1;
3302
3303 /* fp array: RSS plus CNIC related L2 queues */
3304 fp = kcalloc(BNX2X_MAX_RSS_COUNT(bp) + NON_ETH_CONTEXT_USE,
3305 sizeof(*fp), GFP_KERNEL);
3306 if (!fp)
3307 goto alloc_err;
3308 bp->fp = fp;
3309
3310 /* msix table */
3311 tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
3312 if (!tbl)
3313 goto alloc_err;
3314 bp->msix_table = tbl;
3315
3316 /* ilt */
3317 ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
3318 if (!ilt)
3319 goto alloc_err;
3320 bp->ilt = ilt;
3321
3322 return 0;
3323 alloc_err:
3324 bnx2x_free_mem_bp(bp);
3325 return -ENOMEM;
3326
3327 }
3328
3329 int bnx2x_reload_if_running(struct net_device *dev)
3330 {
3331 struct bnx2x *bp = netdev_priv(dev);
3332
3333 if (unlikely(!netif_running(dev)))
3334 return 0;
3335
3336 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
3337 return bnx2x_nic_load(bp, LOAD_NORMAL);
3338 }
3339
3340 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
3341 {
3342 u32 sel_phy_idx = 0;
3343 if (bp->link_params.num_phys <= 1)
3344 return INT_PHY;
3345
3346 if (bp->link_vars.link_up) {
3347 sel_phy_idx = EXT_PHY1;
3348 /* In case link is SERDES, check if the EXT_PHY2 is the one */
3349 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
3350 (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
3351 sel_phy_idx = EXT_PHY2;
3352 } else {
3353
3354 switch (bnx2x_phy_selection(&bp->link_params)) {
3355 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
3356 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
3357 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
3358 sel_phy_idx = EXT_PHY1;
3359 break;
3360 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
3361 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
3362 sel_phy_idx = EXT_PHY2;
3363 break;
3364 }
3365 }
3366
3367 return sel_phy_idx;
3368
3369 }
3370 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
3371 {
3372 u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
3373 /*
3374 * The selected actived PHY is always after swapping (in case PHY
3375 * swapping is enabled). So when swapping is enabled, we need to reverse
3376 * the configuration
3377 */
3378
3379 if (bp->link_params.multi_phy_config &
3380 PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
3381 if (sel_phy_idx == EXT_PHY1)
3382 sel_phy_idx = EXT_PHY2;
3383 else if (sel_phy_idx == EXT_PHY2)
3384 sel_phy_idx = EXT_PHY1;
3385 }
3386 return LINK_CONFIG_IDX(sel_phy_idx);
3387 }
3388
3389 #if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
3390 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
3391 {
3392 struct bnx2x *bp = netdev_priv(dev);
3393 struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
3394
3395 switch (type) {
3396 case NETDEV_FCOE_WWNN:
3397 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
3398 cp->fcoe_wwn_node_name_lo);
3399 break;
3400 case NETDEV_FCOE_WWPN:
3401 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
3402 cp->fcoe_wwn_port_name_lo);
3403 break;
3404 default:
3405 return -EINVAL;
3406 }
3407
3408 return 0;
3409 }
3410 #endif
3411
3412 /* called with rtnl_lock */
3413 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
3414 {
3415 struct bnx2x *bp = netdev_priv(dev);
3416
3417 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3418 pr_err("Handling parity error recovery. Try again later\n");
3419 return -EAGAIN;
3420 }
3421
3422 if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
3423 ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE))
3424 return -EINVAL;
3425
3426 /* This does not race with packet allocation
3427 * because the actual alloc size is
3428 * only updated as part of load
3429 */
3430 dev->mtu = new_mtu;
3431
3432 return bnx2x_reload_if_running(dev);
3433 }
3434
3435 netdev_features_t bnx2x_fix_features(struct net_device *dev,
3436 netdev_features_t features)
3437 {
3438 struct bnx2x *bp = netdev_priv(dev);
3439
3440 /* TPA requires Rx CSUM offloading */
3441 if (!(features & NETIF_F_RXCSUM) || bp->disable_tpa)
3442 features &= ~NETIF_F_LRO;
3443
3444 return features;
3445 }
3446
3447 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
3448 {
3449 struct bnx2x *bp = netdev_priv(dev);
3450 u32 flags = bp->flags;
3451 bool bnx2x_reload = false;
3452
3453 if (features & NETIF_F_LRO)
3454 flags |= TPA_ENABLE_FLAG;
3455 else
3456 flags &= ~TPA_ENABLE_FLAG;
3457
3458 if (features & NETIF_F_LOOPBACK) {
3459 if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
3460 bp->link_params.loopback_mode = LOOPBACK_BMAC;
3461 bnx2x_reload = true;
3462 }
3463 } else {
3464 if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
3465 bp->link_params.loopback_mode = LOOPBACK_NONE;
3466 bnx2x_reload = true;
3467 }
3468 }
3469
3470 if (flags ^ bp->flags) {
3471 bp->flags = flags;
3472 bnx2x_reload = true;
3473 }
3474
3475 if (bnx2x_reload) {
3476 if (bp->recovery_state == BNX2X_RECOVERY_DONE)
3477 return bnx2x_reload_if_running(dev);
3478 /* else: bnx2x_nic_load() will be called at end of recovery */
3479 }
3480
3481 return 0;
3482 }
3483
3484 void bnx2x_tx_timeout(struct net_device *dev)
3485 {
3486 struct bnx2x *bp = netdev_priv(dev);
3487
3488 #ifdef BNX2X_STOP_ON_ERROR
3489 if (!bp->panic)
3490 bnx2x_panic();
3491 #endif
3492
3493 smp_mb__before_clear_bit();
3494 set_bit(BNX2X_SP_RTNL_TX_TIMEOUT, &bp->sp_rtnl_state);
3495 smp_mb__after_clear_bit();
3496
3497 /* This allows the netif to be shutdown gracefully before resetting */
3498 schedule_delayed_work(&bp->sp_rtnl_task, 0);
3499 }
3500
3501 int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
3502 {
3503 struct net_device *dev = pci_get_drvdata(pdev);
3504 struct bnx2x *bp;
3505
3506 if (!dev) {
3507 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3508 return -ENODEV;
3509 }
3510 bp = netdev_priv(dev);
3511
3512 rtnl_lock();
3513
3514 pci_save_state(pdev);
3515
3516 if (!netif_running(dev)) {
3517 rtnl_unlock();
3518 return 0;
3519 }
3520
3521 netif_device_detach(dev);
3522
3523 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
3524
3525 bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
3526
3527 rtnl_unlock();
3528
3529 return 0;
3530 }
3531
3532 int bnx2x_resume(struct pci_dev *pdev)
3533 {
3534 struct net_device *dev = pci_get_drvdata(pdev);
3535 struct bnx2x *bp;
3536 int rc;
3537
3538 if (!dev) {
3539 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3540 return -ENODEV;
3541 }
3542 bp = netdev_priv(dev);
3543
3544 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3545 pr_err("Handling parity error recovery. Try again later\n");
3546 return -EAGAIN;
3547 }
3548
3549 rtnl_lock();
3550
3551 pci_restore_state(pdev);
3552
3553 if (!netif_running(dev)) {
3554 rtnl_unlock();
3555 return 0;
3556 }
3557
3558 bnx2x_set_power_state(bp, PCI_D0);
3559 netif_device_attach(dev);
3560
3561 /* Since the chip was reset, clear the FW sequence number */
3562 bp->fw_seq = 0;
3563 rc = bnx2x_nic_load(bp, LOAD_OPEN);
3564
3565 rtnl_unlock();
3566
3567 return rc;
3568 }
3569
3570
3571 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
3572 u32 cid)
3573 {
3574 /* ustorm cxt validation */
3575 cxt->ustorm_ag_context.cdu_usage =
3576 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3577 CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
3578 /* xcontext validation */
3579 cxt->xstorm_ag_context.cdu_reserved =
3580 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3581 CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
3582 }
3583
3584 static inline void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
3585 u8 fw_sb_id, u8 sb_index,
3586 u8 ticks)
3587 {
3588
3589 u32 addr = BAR_CSTRORM_INTMEM +
3590 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
3591 REG_WR8(bp, addr, ticks);
3592 DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d ticks %d\n",
3593 port, fw_sb_id, sb_index, ticks);
3594 }
3595
3596 static inline void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
3597 u16 fw_sb_id, u8 sb_index,
3598 u8 disable)
3599 {
3600 u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
3601 u32 addr = BAR_CSTRORM_INTMEM +
3602 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
3603 u16 flags = REG_RD16(bp, addr);
3604 /* clear and set */
3605 flags &= ~HC_INDEX_DATA_HC_ENABLED;
3606 flags |= enable_flag;
3607 REG_WR16(bp, addr, flags);
3608 DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d disable %d\n",
3609 port, fw_sb_id, sb_index, disable);
3610 }
3611
3612 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
3613 u8 sb_index, u8 disable, u16 usec)
3614 {
3615 int port = BP_PORT(bp);
3616 u8 ticks = usec / BNX2X_BTR;
3617
3618 storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
3619
3620 disable = disable ? 1 : (usec ? 0 : 1);
3621 storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
3622 }
Ubuntu Artful kernel mirror