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[GitHub/mt8127/android_kernel_alcatel_ttab.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 #ifdef BNX2X_STOP_ON_ERROR
527 if (pad + len > fp->rx_buf_size) {
528 BNX2X_ERR("skb_put is about to fail... "
529 "pad %d len %d rx_buf_size %d\n",
530 pad, len, fp->rx_buf_size);
531 bnx2x_panic();
532 return;
533 }
534 #endif
535
536 skb_reserve(skb, pad + NET_SKB_PAD);
537 skb_put(skb, len);
538 skb->rxhash = tpa_info->rxhash;
539
540 skb->protocol = eth_type_trans(skb, bp->dev);
541 skb->ip_summed = CHECKSUM_UNNECESSARY;
542
543 if (!bnx2x_fill_frag_skb(bp, fp, queue, skb, cqe, cqe_idx)) {
544 if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
545 __vlan_hwaccel_put_tag(skb, tpa_info->vlan_tag);
546 napi_gro_receive(&fp->napi, skb);
547 } else {
548 DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages"
549 " - dropping packet!\n");
550 dev_kfree_skb_any(skb);
551 }
552
553
554 /* put new data in bin */
555 rx_buf->data = new_data;
556
557 return;
558 }
559 kfree(new_data);
560 drop:
561 /* drop the packet and keep the buffer in the bin */
562 DP(NETIF_MSG_RX_STATUS,
563 "Failed to allocate or map a new skb - dropping packet!\n");
564 fp->eth_q_stats.rx_skb_alloc_failed++;
565 }
566
567
568 int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
569 {
570 struct bnx2x *bp = fp->bp;
571 u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
572 u16 hw_comp_cons, sw_comp_cons, sw_comp_prod;
573 int rx_pkt = 0;
574
575 #ifdef BNX2X_STOP_ON_ERROR
576 if (unlikely(bp->panic))
577 return 0;
578 #endif
579
580 /* CQ "next element" is of the size of the regular element,
581 that's why it's ok here */
582 hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb);
583 if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
584 hw_comp_cons++;
585
586 bd_cons = fp->rx_bd_cons;
587 bd_prod = fp->rx_bd_prod;
588 bd_prod_fw = bd_prod;
589 sw_comp_cons = fp->rx_comp_cons;
590 sw_comp_prod = fp->rx_comp_prod;
591
592 /* Memory barrier necessary as speculative reads of the rx
593 * buffer can be ahead of the index in the status block
594 */
595 rmb();
596
597 DP(NETIF_MSG_RX_STATUS,
598 "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n",
599 fp->index, hw_comp_cons, sw_comp_cons);
600
601 while (sw_comp_cons != hw_comp_cons) {
602 struct sw_rx_bd *rx_buf = NULL;
603 struct sk_buff *skb;
604 union eth_rx_cqe *cqe;
605 struct eth_fast_path_rx_cqe *cqe_fp;
606 u8 cqe_fp_flags;
607 enum eth_rx_cqe_type cqe_fp_type;
608 u16 len, pad;
609 u8 *data;
610
611 #ifdef BNX2X_STOP_ON_ERROR
612 if (unlikely(bp->panic))
613 return 0;
614 #endif
615
616 comp_ring_cons = RCQ_BD(sw_comp_cons);
617 bd_prod = RX_BD(bd_prod);
618 bd_cons = RX_BD(bd_cons);
619
620 cqe = &fp->rx_comp_ring[comp_ring_cons];
621 cqe_fp = &cqe->fast_path_cqe;
622 cqe_fp_flags = cqe_fp->type_error_flags;
623 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
624
625 DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x"
626 " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags),
627 cqe_fp_flags, cqe_fp->status_flags,
628 le32_to_cpu(cqe_fp->rss_hash_result),
629 le16_to_cpu(cqe_fp->vlan_tag), le16_to_cpu(cqe_fp->pkt_len));
630
631 /* is this a slowpath msg? */
632 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
633 bnx2x_sp_event(fp, cqe);
634 goto next_cqe;
635 }
636 rx_buf = &fp->rx_buf_ring[bd_cons];
637 data = rx_buf->data;
638
639 if (!CQE_TYPE_FAST(cqe_fp_type)) {
640 #ifdef BNX2X_STOP_ON_ERROR
641 /* sanity check */
642 if (fp->disable_tpa &&
643 (CQE_TYPE_START(cqe_fp_type) ||
644 CQE_TYPE_STOP(cqe_fp_type)))
645 BNX2X_ERR("START/STOP packet while "
646 "disable_tpa type %x\n",
647 CQE_TYPE(cqe_fp_type));
648 #endif
649
650 if (CQE_TYPE_START(cqe_fp_type)) {
651 u16 queue = cqe_fp->queue_index;
652 DP(NETIF_MSG_RX_STATUS,
653 "calling tpa_start on queue %d\n",
654 queue);
655
656 bnx2x_tpa_start(fp, queue,
657 bd_cons, bd_prod,
658 cqe_fp);
659 goto next_rx;
660 } else {
661 u16 queue =
662 cqe->end_agg_cqe.queue_index;
663 DP(NETIF_MSG_RX_STATUS,
664 "calling tpa_stop on queue %d\n",
665 queue);
666
667 bnx2x_tpa_stop(bp, fp, queue,
668 &cqe->end_agg_cqe,
669 comp_ring_cons);
670 #ifdef BNX2X_STOP_ON_ERROR
671 if (bp->panic)
672 return 0;
673 #endif
674
675 bnx2x_update_sge_prod(fp, cqe_fp);
676 goto next_cqe;
677 }
678 }
679 /* non TPA */
680 len = le16_to_cpu(cqe_fp->pkt_len);
681 pad = cqe_fp->placement_offset;
682 dma_sync_single_for_cpu(&bp->pdev->dev,
683 dma_unmap_addr(rx_buf, mapping),
684 pad + RX_COPY_THRESH,
685 DMA_FROM_DEVICE);
686 pad += NET_SKB_PAD;
687 prefetch(data + pad); /* speedup eth_type_trans() */
688 /* is this an error packet? */
689 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
690 DP(NETIF_MSG_RX_ERR,
691 "ERROR flags %x rx packet %u\n",
692 cqe_fp_flags, sw_comp_cons);
693 fp->eth_q_stats.rx_err_discard_pkt++;
694 goto reuse_rx;
695 }
696
697 /* Since we don't have a jumbo ring
698 * copy small packets if mtu > 1500
699 */
700 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
701 (len <= RX_COPY_THRESH)) {
702 skb = netdev_alloc_skb_ip_align(bp->dev, len);
703 if (skb == NULL) {
704 DP(NETIF_MSG_RX_ERR,
705 "ERROR packet dropped because of alloc failure\n");
706 fp->eth_q_stats.rx_skb_alloc_failed++;
707 goto reuse_rx;
708 }
709 memcpy(skb->data, data + pad, len);
710 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
711 } else {
712 if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod) == 0)) {
713 dma_unmap_single(&bp->pdev->dev,
714 dma_unmap_addr(rx_buf, mapping),
715 fp->rx_buf_size,
716 DMA_FROM_DEVICE);
717 skb = build_skb(data);
718 if (unlikely(!skb)) {
719 kfree(data);
720 fp->eth_q_stats.rx_skb_alloc_failed++;
721 goto next_rx;
722 }
723 skb_reserve(skb, pad);
724 } else {
725 DP(NETIF_MSG_RX_ERR,
726 "ERROR packet dropped because "
727 "of alloc failure\n");
728 fp->eth_q_stats.rx_skb_alloc_failed++;
729 reuse_rx:
730 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
731 goto next_rx;
732 }
733 }
734
735 skb_put(skb, len);
736 skb->protocol = eth_type_trans(skb, bp->dev);
737
738 /* Set Toeplitz hash for a none-LRO skb */
739 skb->rxhash = bnx2x_get_rxhash(bp, cqe_fp);
740
741 skb_checksum_none_assert(skb);
742
743 if (bp->dev->features & NETIF_F_RXCSUM) {
744
745 if (likely(BNX2X_RX_CSUM_OK(cqe)))
746 skb->ip_summed = CHECKSUM_UNNECESSARY;
747 else
748 fp->eth_q_stats.hw_csum_err++;
749 }
750
751 skb_record_rx_queue(skb, fp->rx_queue);
752
753 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
754 PARSING_FLAGS_VLAN)
755 __vlan_hwaccel_put_tag(skb,
756 le16_to_cpu(cqe_fp->vlan_tag));
757 napi_gro_receive(&fp->napi, skb);
758
759
760 next_rx:
761 rx_buf->data = NULL;
762
763 bd_cons = NEXT_RX_IDX(bd_cons);
764 bd_prod = NEXT_RX_IDX(bd_prod);
765 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
766 rx_pkt++;
767 next_cqe:
768 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
769 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
770
771 if (rx_pkt == budget)
772 break;
773 } /* while */
774
775 fp->rx_bd_cons = bd_cons;
776 fp->rx_bd_prod = bd_prod_fw;
777 fp->rx_comp_cons = sw_comp_cons;
778 fp->rx_comp_prod = sw_comp_prod;
779
780 /* Update producers */
781 bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
782 fp->rx_sge_prod);
783
784 fp->rx_pkt += rx_pkt;
785 fp->rx_calls++;
786
787 return rx_pkt;
788 }
789
790 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
791 {
792 struct bnx2x_fastpath *fp = fp_cookie;
793 struct bnx2x *bp = fp->bp;
794 u8 cos;
795
796 DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB "
797 "[fp %d fw_sd %d igusb %d]\n",
798 fp->index, fp->fw_sb_id, fp->igu_sb_id);
799 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
800
801 #ifdef BNX2X_STOP_ON_ERROR
802 if (unlikely(bp->panic))
803 return IRQ_HANDLED;
804 #endif
805
806 /* Handle Rx and Tx according to MSI-X vector */
807 prefetch(fp->rx_cons_sb);
808
809 for_each_cos_in_tx_queue(fp, cos)
810 prefetch(fp->txdata[cos].tx_cons_sb);
811
812 prefetch(&fp->sb_running_index[SM_RX_ID]);
813 napi_schedule(&bnx2x_fp(bp, fp->index, napi));
814
815 return IRQ_HANDLED;
816 }
817
818 /* HW Lock for shared dual port PHYs */
819 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
820 {
821 mutex_lock(&bp->port.phy_mutex);
822
823 if (bp->port.need_hw_lock)
824 bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
825 }
826
827 void bnx2x_release_phy_lock(struct bnx2x *bp)
828 {
829 if (bp->port.need_hw_lock)
830 bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
831
832 mutex_unlock(&bp->port.phy_mutex);
833 }
834
835 /* calculates MF speed according to current linespeed and MF configuration */
836 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
837 {
838 u16 line_speed = bp->link_vars.line_speed;
839 if (IS_MF(bp)) {
840 u16 maxCfg = bnx2x_extract_max_cfg(bp,
841 bp->mf_config[BP_VN(bp)]);
842
843 /* Calculate the current MAX line speed limit for the MF
844 * devices
845 */
846 if (IS_MF_SI(bp))
847 line_speed = (line_speed * maxCfg) / 100;
848 else { /* SD mode */
849 u16 vn_max_rate = maxCfg * 100;
850
851 if (vn_max_rate < line_speed)
852 line_speed = vn_max_rate;
853 }
854 }
855
856 return line_speed;
857 }
858
859 /**
860 * bnx2x_fill_report_data - fill link report data to report
861 *
862 * @bp: driver handle
863 * @data: link state to update
864 *
865 * It uses a none-atomic bit operations because is called under the mutex.
866 */
867 static inline void bnx2x_fill_report_data(struct bnx2x *bp,
868 struct bnx2x_link_report_data *data)
869 {
870 u16 line_speed = bnx2x_get_mf_speed(bp);
871
872 memset(data, 0, sizeof(*data));
873
874 /* Fill the report data: efective line speed */
875 data->line_speed = line_speed;
876
877 /* Link is down */
878 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
879 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
880 &data->link_report_flags);
881
882 /* Full DUPLEX */
883 if (bp->link_vars.duplex == DUPLEX_FULL)
884 __set_bit(BNX2X_LINK_REPORT_FD, &data->link_report_flags);
885
886 /* Rx Flow Control is ON */
887 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
888 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON, &data->link_report_flags);
889
890 /* Tx Flow Control is ON */
891 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
892 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON, &data->link_report_flags);
893 }
894
895 /**
896 * bnx2x_link_report - report link status to OS.
897 *
898 * @bp: driver handle
899 *
900 * Calls the __bnx2x_link_report() under the same locking scheme
901 * as a link/PHY state managing code to ensure a consistent link
902 * reporting.
903 */
904
905 void bnx2x_link_report(struct bnx2x *bp)
906 {
907 bnx2x_acquire_phy_lock(bp);
908 __bnx2x_link_report(bp);
909 bnx2x_release_phy_lock(bp);
910 }
911
912 /**
913 * __bnx2x_link_report - report link status to OS.
914 *
915 * @bp: driver handle
916 *
917 * None atomic inmlementation.
918 * Should be called under the phy_lock.
919 */
920 void __bnx2x_link_report(struct bnx2x *bp)
921 {
922 struct bnx2x_link_report_data cur_data;
923
924 /* reread mf_cfg */
925 if (!CHIP_IS_E1(bp))
926 bnx2x_read_mf_cfg(bp);
927
928 /* Read the current link report info */
929 bnx2x_fill_report_data(bp, &cur_data);
930
931 /* Don't report link down or exactly the same link status twice */
932 if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
933 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
934 &bp->last_reported_link.link_report_flags) &&
935 test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
936 &cur_data.link_report_flags)))
937 return;
938
939 bp->link_cnt++;
940
941 /* We are going to report a new link parameters now -
942 * remember the current data for the next time.
943 */
944 memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
945
946 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
947 &cur_data.link_report_flags)) {
948 netif_carrier_off(bp->dev);
949 netdev_err(bp->dev, "NIC Link is Down\n");
950 return;
951 } else {
952 const char *duplex;
953 const char *flow;
954
955 netif_carrier_on(bp->dev);
956
957 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
958 &cur_data.link_report_flags))
959 duplex = "full";
960 else
961 duplex = "half";
962
963 /* Handle the FC at the end so that only these flags would be
964 * possibly set. This way we may easily check if there is no FC
965 * enabled.
966 */
967 if (cur_data.link_report_flags) {
968 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
969 &cur_data.link_report_flags)) {
970 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
971 &cur_data.link_report_flags))
972 flow = "ON - receive & transmit";
973 else
974 flow = "ON - receive";
975 } else {
976 flow = "ON - transmit";
977 }
978 } else {
979 flow = "none";
980 }
981 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
982 cur_data.line_speed, duplex, flow);
983 }
984 }
985
986 void bnx2x_init_rx_rings(struct bnx2x *bp)
987 {
988 int func = BP_FUNC(bp);
989 u16 ring_prod;
990 int i, j;
991
992 /* Allocate TPA resources */
993 for_each_rx_queue(bp, j) {
994 struct bnx2x_fastpath *fp = &bp->fp[j];
995
996 DP(NETIF_MSG_IFUP,
997 "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
998
999 if (!fp->disable_tpa) {
1000 /* Fill the per-aggregtion pool */
1001 for (i = 0; i < MAX_AGG_QS(bp); i++) {
1002 struct bnx2x_agg_info *tpa_info =
1003 &fp->tpa_info[i];
1004 struct sw_rx_bd *first_buf =
1005 &tpa_info->first_buf;
1006
1007 first_buf->data = kmalloc(fp->rx_buf_size + NET_SKB_PAD,
1008 GFP_ATOMIC);
1009 if (!first_buf->data) {
1010 BNX2X_ERR("Failed to allocate TPA "
1011 "skb pool for queue[%d] - "
1012 "disabling TPA on this "
1013 "queue!\n", j);
1014 bnx2x_free_tpa_pool(bp, fp, i);
1015 fp->disable_tpa = 1;
1016 break;
1017 }
1018 dma_unmap_addr_set(first_buf, mapping, 0);
1019 tpa_info->tpa_state = BNX2X_TPA_STOP;
1020 }
1021
1022 /* "next page" elements initialization */
1023 bnx2x_set_next_page_sgl(fp);
1024
1025 /* set SGEs bit mask */
1026 bnx2x_init_sge_ring_bit_mask(fp);
1027
1028 /* Allocate SGEs and initialize the ring elements */
1029 for (i = 0, ring_prod = 0;
1030 i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1031
1032 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) {
1033 BNX2X_ERR("was only able to allocate "
1034 "%d rx sges\n", i);
1035 BNX2X_ERR("disabling TPA for "
1036 "queue[%d]\n", j);
1037 /* Cleanup already allocated elements */
1038 bnx2x_free_rx_sge_range(bp, fp,
1039 ring_prod);
1040 bnx2x_free_tpa_pool(bp, fp,
1041 MAX_AGG_QS(bp));
1042 fp->disable_tpa = 1;
1043 ring_prod = 0;
1044 break;
1045 }
1046 ring_prod = NEXT_SGE_IDX(ring_prod);
1047 }
1048
1049 fp->rx_sge_prod = ring_prod;
1050 }
1051 }
1052
1053 for_each_rx_queue(bp, j) {
1054 struct bnx2x_fastpath *fp = &bp->fp[j];
1055
1056 fp->rx_bd_cons = 0;
1057
1058 /* Activate BD ring */
1059 /* Warning!
1060 * this will generate an interrupt (to the TSTORM)
1061 * must only be done after chip is initialized
1062 */
1063 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1064 fp->rx_sge_prod);
1065
1066 if (j != 0)
1067 continue;
1068
1069 if (CHIP_IS_E1(bp)) {
1070 REG_WR(bp, BAR_USTRORM_INTMEM +
1071 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1072 U64_LO(fp->rx_comp_mapping));
1073 REG_WR(bp, BAR_USTRORM_INTMEM +
1074 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1075 U64_HI(fp->rx_comp_mapping));
1076 }
1077 }
1078 }
1079
1080 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1081 {
1082 int i;
1083 u8 cos;
1084
1085 for_each_tx_queue(bp, i) {
1086 struct bnx2x_fastpath *fp = &bp->fp[i];
1087 for_each_cos_in_tx_queue(fp, cos) {
1088 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
1089 unsigned pkts_compl = 0, bytes_compl = 0;
1090
1091 u16 sw_prod = txdata->tx_pkt_prod;
1092 u16 sw_cons = txdata->tx_pkt_cons;
1093
1094 while (sw_cons != sw_prod) {
1095 bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1096 &pkts_compl, &bytes_compl);
1097 sw_cons++;
1098 }
1099 netdev_tx_reset_queue(
1100 netdev_get_tx_queue(bp->dev, txdata->txq_index));
1101 }
1102 }
1103 }
1104
1105 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1106 {
1107 struct bnx2x *bp = fp->bp;
1108 int i;
1109
1110 /* ring wasn't allocated */
1111 if (fp->rx_buf_ring == NULL)
1112 return;
1113
1114 for (i = 0; i < NUM_RX_BD; i++) {
1115 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1116 u8 *data = rx_buf->data;
1117
1118 if (data == NULL)
1119 continue;
1120 dma_unmap_single(&bp->pdev->dev,
1121 dma_unmap_addr(rx_buf, mapping),
1122 fp->rx_buf_size, DMA_FROM_DEVICE);
1123
1124 rx_buf->data = NULL;
1125 kfree(data);
1126 }
1127 }
1128
1129 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1130 {
1131 int j;
1132
1133 for_each_rx_queue(bp, j) {
1134 struct bnx2x_fastpath *fp = &bp->fp[j];
1135
1136 bnx2x_free_rx_bds(fp);
1137
1138 if (!fp->disable_tpa)
1139 bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1140 }
1141 }
1142
1143 void bnx2x_free_skbs(struct bnx2x *bp)
1144 {
1145 bnx2x_free_tx_skbs(bp);
1146 bnx2x_free_rx_skbs(bp);
1147 }
1148
1149 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1150 {
1151 /* load old values */
1152 u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1153
1154 if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1155 /* leave all but MAX value */
1156 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1157
1158 /* set new MAX value */
1159 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1160 & FUNC_MF_CFG_MAX_BW_MASK;
1161
1162 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1163 }
1164 }
1165
1166 /**
1167 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1168 *
1169 * @bp: driver handle
1170 * @nvecs: number of vectors to be released
1171 */
1172 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1173 {
1174 int i, offset = 0;
1175
1176 if (nvecs == offset)
1177 return;
1178 free_irq(bp->msix_table[offset].vector, bp->dev);
1179 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1180 bp->msix_table[offset].vector);
1181 offset++;
1182 #ifdef BCM_CNIC
1183 if (nvecs == offset)
1184 return;
1185 offset++;
1186 #endif
1187
1188 for_each_eth_queue(bp, i) {
1189 if (nvecs == offset)
1190 return;
1191 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d "
1192 "irq\n", i, bp->msix_table[offset].vector);
1193
1194 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1195 }
1196 }
1197
1198 void bnx2x_free_irq(struct bnx2x *bp)
1199 {
1200 if (bp->flags & USING_MSIX_FLAG)
1201 bnx2x_free_msix_irqs(bp, BNX2X_NUM_ETH_QUEUES(bp) +
1202 CNIC_PRESENT + 1);
1203 else if (bp->flags & USING_MSI_FLAG)
1204 free_irq(bp->pdev->irq, bp->dev);
1205 else
1206 free_irq(bp->pdev->irq, bp->dev);
1207 }
1208
1209 int bnx2x_enable_msix(struct bnx2x *bp)
1210 {
1211 int msix_vec = 0, i, rc, req_cnt;
1212
1213 bp->msix_table[msix_vec].entry = msix_vec;
1214 DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n",
1215 bp->msix_table[0].entry);
1216 msix_vec++;
1217
1218 #ifdef BCM_CNIC
1219 bp->msix_table[msix_vec].entry = msix_vec;
1220 DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d (CNIC)\n",
1221 bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
1222 msix_vec++;
1223 #endif
1224 /* We need separate vectors for ETH queues only (not FCoE) */
1225 for_each_eth_queue(bp, i) {
1226 bp->msix_table[msix_vec].entry = msix_vec;
1227 DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d "
1228 "(fastpath #%u)\n", msix_vec, msix_vec, i);
1229 msix_vec++;
1230 }
1231
1232 req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_PRESENT + 1;
1233
1234 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
1235
1236 /*
1237 * reconfigure number of tx/rx queues according to available
1238 * MSI-X vectors
1239 */
1240 if (rc >= BNX2X_MIN_MSIX_VEC_CNT) {
1241 /* how less vectors we will have? */
1242 int diff = req_cnt - rc;
1243
1244 DP(NETIF_MSG_IFUP,
1245 "Trying to use less MSI-X vectors: %d\n", rc);
1246
1247 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc);
1248
1249 if (rc) {
1250 DP(NETIF_MSG_IFUP,
1251 "MSI-X is not attainable rc %d\n", rc);
1252 return rc;
1253 }
1254 /*
1255 * decrease number of queues by number of unallocated entries
1256 */
1257 bp->num_queues -= diff;
1258
1259 DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n",
1260 bp->num_queues);
1261 } else if (rc) {
1262 /* fall to INTx if not enough memory */
1263 if (rc == -ENOMEM)
1264 bp->flags |= DISABLE_MSI_FLAG;
1265 DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc);
1266 return rc;
1267 }
1268
1269 bp->flags |= USING_MSIX_FLAG;
1270
1271 return 0;
1272 }
1273
1274 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1275 {
1276 int i, rc, offset = 0;
1277
1278 rc = request_irq(bp->msix_table[offset++].vector,
1279 bnx2x_msix_sp_int, 0,
1280 bp->dev->name, bp->dev);
1281 if (rc) {
1282 BNX2X_ERR("request sp irq failed\n");
1283 return -EBUSY;
1284 }
1285
1286 #ifdef BCM_CNIC
1287 offset++;
1288 #endif
1289 for_each_eth_queue(bp, i) {
1290 struct bnx2x_fastpath *fp = &bp->fp[i];
1291 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1292 bp->dev->name, i);
1293
1294 rc = request_irq(bp->msix_table[offset].vector,
1295 bnx2x_msix_fp_int, 0, fp->name, fp);
1296 if (rc) {
1297 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
1298 bp->msix_table[offset].vector, rc);
1299 bnx2x_free_msix_irqs(bp, offset);
1300 return -EBUSY;
1301 }
1302
1303 offset++;
1304 }
1305
1306 i = BNX2X_NUM_ETH_QUEUES(bp);
1307 offset = 1 + CNIC_PRESENT;
1308 netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d"
1309 " ... fp[%d] %d\n",
1310 bp->msix_table[0].vector,
1311 0, bp->msix_table[offset].vector,
1312 i - 1, bp->msix_table[offset + i - 1].vector);
1313
1314 return 0;
1315 }
1316
1317 int bnx2x_enable_msi(struct bnx2x *bp)
1318 {
1319 int rc;
1320
1321 rc = pci_enable_msi(bp->pdev);
1322 if (rc) {
1323 DP(NETIF_MSG_IFUP, "MSI is not attainable\n");
1324 return -1;
1325 }
1326 bp->flags |= USING_MSI_FLAG;
1327
1328 return 0;
1329 }
1330
1331 static int bnx2x_req_irq(struct bnx2x *bp)
1332 {
1333 unsigned long flags;
1334 int rc;
1335
1336 if (bp->flags & USING_MSI_FLAG)
1337 flags = 0;
1338 else
1339 flags = IRQF_SHARED;
1340
1341 rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags,
1342 bp->dev->name, bp->dev);
1343 return rc;
1344 }
1345
1346 static inline int bnx2x_setup_irqs(struct bnx2x *bp)
1347 {
1348 int rc = 0;
1349 if (bp->flags & USING_MSIX_FLAG) {
1350 rc = bnx2x_req_msix_irqs(bp);
1351 if (rc)
1352 return rc;
1353 } else {
1354 bnx2x_ack_int(bp);
1355 rc = bnx2x_req_irq(bp);
1356 if (rc) {
1357 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
1358 return rc;
1359 }
1360 if (bp->flags & USING_MSI_FLAG) {
1361 bp->dev->irq = bp->pdev->irq;
1362 netdev_info(bp->dev, "using MSI IRQ %d\n",
1363 bp->pdev->irq);
1364 }
1365 }
1366
1367 return 0;
1368 }
1369
1370 static inline void bnx2x_napi_enable(struct bnx2x *bp)
1371 {
1372 int i;
1373
1374 for_each_rx_queue(bp, i)
1375 napi_enable(&bnx2x_fp(bp, i, napi));
1376 }
1377
1378 static inline void bnx2x_napi_disable(struct bnx2x *bp)
1379 {
1380 int i;
1381
1382 for_each_rx_queue(bp, i)
1383 napi_disable(&bnx2x_fp(bp, i, napi));
1384 }
1385
1386 void bnx2x_netif_start(struct bnx2x *bp)
1387 {
1388 if (netif_running(bp->dev)) {
1389 bnx2x_napi_enable(bp);
1390 bnx2x_int_enable(bp);
1391 if (bp->state == BNX2X_STATE_OPEN)
1392 netif_tx_wake_all_queues(bp->dev);
1393 }
1394 }
1395
1396 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1397 {
1398 bnx2x_int_disable_sync(bp, disable_hw);
1399 bnx2x_napi_disable(bp);
1400 }
1401
1402 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
1403 {
1404 struct bnx2x *bp = netdev_priv(dev);
1405
1406 #ifdef BCM_CNIC
1407 if (!NO_FCOE(bp)) {
1408 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1409 u16 ether_type = ntohs(hdr->h_proto);
1410
1411 /* Skip VLAN tag if present */
1412 if (ether_type == ETH_P_8021Q) {
1413 struct vlan_ethhdr *vhdr =
1414 (struct vlan_ethhdr *)skb->data;
1415
1416 ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1417 }
1418
1419 /* If ethertype is FCoE or FIP - use FCoE ring */
1420 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1421 return bnx2x_fcoe_tx(bp, txq_index);
1422 }
1423 #endif
1424 /* select a non-FCoE queue */
1425 return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
1426 }
1427
1428 void bnx2x_set_num_queues(struct bnx2x *bp)
1429 {
1430 switch (bp->multi_mode) {
1431 case ETH_RSS_MODE_DISABLED:
1432 bp->num_queues = 1;
1433 break;
1434 case ETH_RSS_MODE_REGULAR:
1435 bp->num_queues = bnx2x_calc_num_queues(bp);
1436 break;
1437
1438 default:
1439 bp->num_queues = 1;
1440 break;
1441 }
1442
1443 #ifdef BCM_CNIC
1444 /* override in ISCSI SD mod */
1445 if (IS_MF_ISCSI_SD(bp))
1446 bp->num_queues = 1;
1447 #endif
1448 /* Add special queues */
1449 bp->num_queues += NON_ETH_CONTEXT_USE;
1450 }
1451
1452 /**
1453 * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1454 *
1455 * @bp: Driver handle
1456 *
1457 * We currently support for at most 16 Tx queues for each CoS thus we will
1458 * allocate a multiple of 16 for ETH L2 rings according to the value of the
1459 * bp->max_cos.
1460 *
1461 * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1462 * index after all ETH L2 indices.
1463 *
1464 * If the actual number of Tx queues (for each CoS) is less than 16 then there
1465 * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1466 * 16..31,...) with indicies that are not coupled with any real Tx queue.
1467 *
1468 * The proper configuration of skb->queue_mapping is handled by
1469 * bnx2x_select_queue() and __skb_tx_hash().
1470 *
1471 * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1472 * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1473 */
1474 static inline int bnx2x_set_real_num_queues(struct bnx2x *bp)
1475 {
1476 int rc, tx, rx;
1477
1478 tx = MAX_TXQS_PER_COS * bp->max_cos;
1479 rx = BNX2X_NUM_ETH_QUEUES(bp);
1480
1481 /* account for fcoe queue */
1482 #ifdef BCM_CNIC
1483 if (!NO_FCOE(bp)) {
1484 rx += FCOE_PRESENT;
1485 tx += FCOE_PRESENT;
1486 }
1487 #endif
1488
1489 rc = netif_set_real_num_tx_queues(bp->dev, tx);
1490 if (rc) {
1491 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
1492 return rc;
1493 }
1494 rc = netif_set_real_num_rx_queues(bp->dev, rx);
1495 if (rc) {
1496 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
1497 return rc;
1498 }
1499
1500 DP(NETIF_MSG_DRV, "Setting real num queues to (tx, rx) (%d, %d)\n",
1501 tx, rx);
1502
1503 return rc;
1504 }
1505
1506 static inline void bnx2x_set_rx_buf_size(struct bnx2x *bp)
1507 {
1508 int i;
1509
1510 for_each_queue(bp, i) {
1511 struct bnx2x_fastpath *fp = &bp->fp[i];
1512 u32 mtu;
1513
1514 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
1515 if (IS_FCOE_IDX(i))
1516 /*
1517 * Although there are no IP frames expected to arrive to
1518 * this ring we still want to add an
1519 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
1520 * overrun attack.
1521 */
1522 mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
1523 else
1524 mtu = bp->dev->mtu;
1525 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
1526 IP_HEADER_ALIGNMENT_PADDING +
1527 ETH_OVREHEAD +
1528 mtu +
1529 BNX2X_FW_RX_ALIGN_END;
1530 /* Note : rx_buf_size doesnt take into account NET_SKB_PAD */
1531 }
1532 }
1533
1534 static inline int bnx2x_init_rss_pf(struct bnx2x *bp)
1535 {
1536 int i;
1537 u8 ind_table[T_ETH_INDIRECTION_TABLE_SIZE] = {0};
1538 u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
1539
1540 /*
1541 * Prepare the inital contents fo the indirection table if RSS is
1542 * enabled
1543 */
1544 if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
1545 for (i = 0; i < sizeof(ind_table); i++)
1546 ind_table[i] =
1547 bp->fp->cl_id +
1548 ethtool_rxfh_indir_default(i, num_eth_queues);
1549 }
1550
1551 /*
1552 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
1553 * per-port, so if explicit configuration is needed , do it only
1554 * for a PMF.
1555 *
1556 * For 57712 and newer on the other hand it's a per-function
1557 * configuration.
1558 */
1559 return bnx2x_config_rss_pf(bp, ind_table,
1560 bp->port.pmf || !CHIP_IS_E1x(bp));
1561 }
1562
1563 int bnx2x_config_rss_pf(struct bnx2x *bp, u8 *ind_table, bool config_hash)
1564 {
1565 struct bnx2x_config_rss_params params = {0};
1566 int i;
1567
1568 /* Although RSS is meaningless when there is a single HW queue we
1569 * still need it enabled in order to have HW Rx hash generated.
1570 *
1571 * if (!is_eth_multi(bp))
1572 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
1573 */
1574
1575 params.rss_obj = &bp->rss_conf_obj;
1576
1577 __set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
1578
1579 /* RSS mode */
1580 switch (bp->multi_mode) {
1581 case ETH_RSS_MODE_DISABLED:
1582 __set_bit(BNX2X_RSS_MODE_DISABLED, &params.rss_flags);
1583 break;
1584 case ETH_RSS_MODE_REGULAR:
1585 __set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
1586 break;
1587 case ETH_RSS_MODE_VLAN_PRI:
1588 __set_bit(BNX2X_RSS_MODE_VLAN_PRI, &params.rss_flags);
1589 break;
1590 case ETH_RSS_MODE_E1HOV_PRI:
1591 __set_bit(BNX2X_RSS_MODE_E1HOV_PRI, &params.rss_flags);
1592 break;
1593 case ETH_RSS_MODE_IP_DSCP:
1594 __set_bit(BNX2X_RSS_MODE_IP_DSCP, &params.rss_flags);
1595 break;
1596 default:
1597 BNX2X_ERR("Unknown multi_mode: %d\n", bp->multi_mode);
1598 return -EINVAL;
1599 }
1600
1601 /* If RSS is enabled */
1602 if (bp->multi_mode != ETH_RSS_MODE_DISABLED) {
1603 /* RSS configuration */
1604 __set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
1605 __set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
1606 __set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
1607 __set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
1608
1609 /* Hash bits */
1610 params.rss_result_mask = MULTI_MASK;
1611
1612 memcpy(params.ind_table, ind_table, sizeof(params.ind_table));
1613
1614 if (config_hash) {
1615 /* RSS keys */
1616 for (i = 0; i < sizeof(params.rss_key) / 4; i++)
1617 params.rss_key[i] = random32();
1618
1619 __set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
1620 }
1621 }
1622
1623 return bnx2x_config_rss(bp, &params);
1624 }
1625
1626 static inline int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
1627 {
1628 struct bnx2x_func_state_params func_params = {0};
1629
1630 /* Prepare parameters for function state transitions */
1631 __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
1632
1633 func_params.f_obj = &bp->func_obj;
1634 func_params.cmd = BNX2X_F_CMD_HW_INIT;
1635
1636 func_params.params.hw_init.load_phase = load_code;
1637
1638 return bnx2x_func_state_change(bp, &func_params);
1639 }
1640
1641 /*
1642 * Cleans the object that have internal lists without sending
1643 * ramrods. Should be run when interrutps are disabled.
1644 */
1645 static void bnx2x_squeeze_objects(struct bnx2x *bp)
1646 {
1647 int rc;
1648 unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
1649 struct bnx2x_mcast_ramrod_params rparam = {0};
1650 struct bnx2x_vlan_mac_obj *mac_obj = &bp->fp->mac_obj;
1651
1652 /***************** Cleanup MACs' object first *************************/
1653
1654 /* Wait for completion of requested */
1655 __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
1656 /* Perform a dry cleanup */
1657 __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
1658
1659 /* Clean ETH primary MAC */
1660 __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
1661 rc = mac_obj->delete_all(bp, &bp->fp->mac_obj, &vlan_mac_flags,
1662 &ramrod_flags);
1663 if (rc != 0)
1664 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
1665
1666 /* Cleanup UC list */
1667 vlan_mac_flags = 0;
1668 __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
1669 rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
1670 &ramrod_flags);
1671 if (rc != 0)
1672 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
1673
1674 /***************** Now clean mcast object *****************************/
1675 rparam.mcast_obj = &bp->mcast_obj;
1676 __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
1677
1678 /* Add a DEL command... */
1679 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
1680 if (rc < 0)
1681 BNX2X_ERR("Failed to add a new DEL command to a multi-cast "
1682 "object: %d\n", rc);
1683
1684 /* ...and wait until all pending commands are cleared */
1685 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1686 while (rc != 0) {
1687 if (rc < 0) {
1688 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
1689 rc);
1690 return;
1691 }
1692
1693 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1694 }
1695 }
1696
1697 #ifndef BNX2X_STOP_ON_ERROR
1698 #define LOAD_ERROR_EXIT(bp, label) \
1699 do { \
1700 (bp)->state = BNX2X_STATE_ERROR; \
1701 goto label; \
1702 } while (0)
1703 #else
1704 #define LOAD_ERROR_EXIT(bp, label) \
1705 do { \
1706 (bp)->state = BNX2X_STATE_ERROR; \
1707 (bp)->panic = 1; \
1708 return -EBUSY; \
1709 } while (0)
1710 #endif
1711
1712 /* must be called with rtnl_lock */
1713 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
1714 {
1715 int port = BP_PORT(bp);
1716 u32 load_code;
1717 int i, rc;
1718
1719 #ifdef BNX2X_STOP_ON_ERROR
1720 if (unlikely(bp->panic))
1721 return -EPERM;
1722 #endif
1723
1724 bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
1725
1726 /* Set the initial link reported state to link down */
1727 bnx2x_acquire_phy_lock(bp);
1728 memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
1729 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1730 &bp->last_reported_link.link_report_flags);
1731 bnx2x_release_phy_lock(bp);
1732
1733 /* must be called before memory allocation and HW init */
1734 bnx2x_ilt_set_info(bp);
1735
1736 /*
1737 * Zero fastpath structures preserving invariants like napi, which are
1738 * allocated only once, fp index, max_cos, bp pointer.
1739 * Also set fp->disable_tpa.
1740 */
1741 for_each_queue(bp, i)
1742 bnx2x_bz_fp(bp, i);
1743
1744
1745 /* Set the receive queues buffer size */
1746 bnx2x_set_rx_buf_size(bp);
1747
1748 if (bnx2x_alloc_mem(bp))
1749 return -ENOMEM;
1750
1751 /* As long as bnx2x_alloc_mem() may possibly update
1752 * bp->num_queues, bnx2x_set_real_num_queues() should always
1753 * come after it.
1754 */
1755 rc = bnx2x_set_real_num_queues(bp);
1756 if (rc) {
1757 BNX2X_ERR("Unable to set real_num_queues\n");
1758 LOAD_ERROR_EXIT(bp, load_error0);
1759 }
1760
1761 /* configure multi cos mappings in kernel.
1762 * this configuration may be overriden by a multi class queue discipline
1763 * or by a dcbx negotiation result.
1764 */
1765 bnx2x_setup_tc(bp->dev, bp->max_cos);
1766
1767 bnx2x_napi_enable(bp);
1768
1769 /* Send LOAD_REQUEST command to MCP
1770 * Returns the type of LOAD command:
1771 * if it is the first port to be initialized
1772 * common blocks should be initialized, otherwise - not
1773 */
1774 if (!BP_NOMCP(bp)) {
1775 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0);
1776 if (!load_code) {
1777 BNX2X_ERR("MCP response failure, aborting\n");
1778 rc = -EBUSY;
1779 LOAD_ERROR_EXIT(bp, load_error1);
1780 }
1781 if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) {
1782 rc = -EBUSY; /* other port in diagnostic mode */
1783 LOAD_ERROR_EXIT(bp, load_error1);
1784 }
1785
1786 } else {
1787 int path = BP_PATH(bp);
1788
1789 DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
1790 path, load_count[path][0], load_count[path][1],
1791 load_count[path][2]);
1792 load_count[path][0]++;
1793 load_count[path][1 + port]++;
1794 DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
1795 path, load_count[path][0], load_count[path][1],
1796 load_count[path][2]);
1797 if (load_count[path][0] == 1)
1798 load_code = FW_MSG_CODE_DRV_LOAD_COMMON;
1799 else if (load_count[path][1 + port] == 1)
1800 load_code = FW_MSG_CODE_DRV_LOAD_PORT;
1801 else
1802 load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION;
1803 }
1804
1805 if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
1806 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
1807 (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
1808 bp->port.pmf = 1;
1809 /*
1810 * We need the barrier to ensure the ordering between the
1811 * writing to bp->port.pmf here and reading it from the
1812 * bnx2x_periodic_task().
1813 */
1814 smp_mb();
1815 queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
1816 } else
1817 bp->port.pmf = 0;
1818
1819 DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
1820
1821 /* Init Function state controlling object */
1822 bnx2x__init_func_obj(bp);
1823
1824 /* Initialize HW */
1825 rc = bnx2x_init_hw(bp, load_code);
1826 if (rc) {
1827 BNX2X_ERR("HW init failed, aborting\n");
1828 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1829 LOAD_ERROR_EXIT(bp, load_error2);
1830 }
1831
1832 /* Connect to IRQs */
1833 rc = bnx2x_setup_irqs(bp);
1834 if (rc) {
1835 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1836 LOAD_ERROR_EXIT(bp, load_error2);
1837 }
1838
1839 /* Setup NIC internals and enable interrupts */
1840 bnx2x_nic_init(bp, load_code);
1841
1842 /* Init per-function objects */
1843 bnx2x_init_bp_objs(bp);
1844
1845 if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
1846 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
1847 (bp->common.shmem2_base)) {
1848 if (SHMEM2_HAS(bp, dcc_support))
1849 SHMEM2_WR(bp, dcc_support,
1850 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
1851 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
1852 }
1853
1854 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
1855 rc = bnx2x_func_start(bp);
1856 if (rc) {
1857 BNX2X_ERR("Function start failed!\n");
1858 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1859 LOAD_ERROR_EXIT(bp, load_error3);
1860 }
1861
1862 /* Send LOAD_DONE command to MCP */
1863 if (!BP_NOMCP(bp)) {
1864 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
1865 if (!load_code) {
1866 BNX2X_ERR("MCP response failure, aborting\n");
1867 rc = -EBUSY;
1868 LOAD_ERROR_EXIT(bp, load_error3);
1869 }
1870 }
1871
1872 rc = bnx2x_setup_leading(bp);
1873 if (rc) {
1874 BNX2X_ERR("Setup leading failed!\n");
1875 LOAD_ERROR_EXIT(bp, load_error3);
1876 }
1877
1878 #ifdef BCM_CNIC
1879 /* Enable Timer scan */
1880 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
1881 #endif
1882
1883 for_each_nondefault_queue(bp, i) {
1884 rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
1885 if (rc)
1886 LOAD_ERROR_EXIT(bp, load_error4);
1887 }
1888
1889 rc = bnx2x_init_rss_pf(bp);
1890 if (rc)
1891 LOAD_ERROR_EXIT(bp, load_error4);
1892
1893 /* Now when Clients are configured we are ready to work */
1894 bp->state = BNX2X_STATE_OPEN;
1895
1896 /* Configure a ucast MAC */
1897 rc = bnx2x_set_eth_mac(bp, true);
1898 if (rc)
1899 LOAD_ERROR_EXIT(bp, load_error4);
1900
1901 if (bp->pending_max) {
1902 bnx2x_update_max_mf_config(bp, bp->pending_max);
1903 bp->pending_max = 0;
1904 }
1905
1906 if (bp->port.pmf)
1907 bnx2x_initial_phy_init(bp, load_mode);
1908
1909 /* Start fast path */
1910
1911 /* Initialize Rx filter. */
1912 netif_addr_lock_bh(bp->dev);
1913 bnx2x_set_rx_mode(bp->dev);
1914 netif_addr_unlock_bh(bp->dev);
1915
1916 /* Start the Tx */
1917 switch (load_mode) {
1918 case LOAD_NORMAL:
1919 /* Tx queue should be only reenabled */
1920 netif_tx_wake_all_queues(bp->dev);
1921 break;
1922
1923 case LOAD_OPEN:
1924 netif_tx_start_all_queues(bp->dev);
1925 smp_mb__after_clear_bit();
1926 break;
1927
1928 case LOAD_DIAG:
1929 bp->state = BNX2X_STATE_DIAG;
1930 break;
1931
1932 default:
1933 break;
1934 }
1935
1936 if (bp->port.pmf)
1937 bnx2x_update_drv_flags(bp, DRV_FLAGS_DCB_CONFIGURED, 0);
1938 else
1939 bnx2x__link_status_update(bp);
1940
1941 /* start the timer */
1942 mod_timer(&bp->timer, jiffies + bp->current_interval);
1943
1944 #ifdef BCM_CNIC
1945 /* re-read iscsi info */
1946 bnx2x_get_iscsi_info(bp);
1947 bnx2x_setup_cnic_irq_info(bp);
1948 if (bp->state == BNX2X_STATE_OPEN)
1949 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
1950 #endif
1951 bnx2x_inc_load_cnt(bp);
1952
1953 /* Wait for all pending SP commands to complete */
1954 if (!bnx2x_wait_sp_comp(bp, ~0x0UL)) {
1955 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
1956 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
1957 return -EBUSY;
1958 }
1959
1960 bnx2x_dcbx_init(bp);
1961 return 0;
1962
1963 #ifndef BNX2X_STOP_ON_ERROR
1964 load_error4:
1965 #ifdef BCM_CNIC
1966 /* Disable Timer scan */
1967 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
1968 #endif
1969 load_error3:
1970 bnx2x_int_disable_sync(bp, 1);
1971
1972 /* Clean queueable objects */
1973 bnx2x_squeeze_objects(bp);
1974
1975 /* Free SKBs, SGEs, TPA pool and driver internals */
1976 bnx2x_free_skbs(bp);
1977 for_each_rx_queue(bp, i)
1978 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
1979
1980 /* Release IRQs */
1981 bnx2x_free_irq(bp);
1982 load_error2:
1983 if (!BP_NOMCP(bp)) {
1984 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
1985 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
1986 }
1987
1988 bp->port.pmf = 0;
1989 load_error1:
1990 bnx2x_napi_disable(bp);
1991 load_error0:
1992 bnx2x_free_mem(bp);
1993
1994 return rc;
1995 #endif /* ! BNX2X_STOP_ON_ERROR */
1996 }
1997
1998 /* must be called with rtnl_lock */
1999 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
2000 {
2001 int i;
2002 bool global = false;
2003
2004 if ((bp->state == BNX2X_STATE_CLOSED) ||
2005 (bp->state == BNX2X_STATE_ERROR)) {
2006 /* We can get here if the driver has been unloaded
2007 * during parity error recovery and is either waiting for a
2008 * leader to complete or for other functions to unload and
2009 * then ifdown has been issued. In this case we want to
2010 * unload and let other functions to complete a recovery
2011 * process.
2012 */
2013 bp->recovery_state = BNX2X_RECOVERY_DONE;
2014 bp->is_leader = 0;
2015 bnx2x_release_leader_lock(bp);
2016 smp_mb();
2017
2018 DP(NETIF_MSG_HW, "Releasing a leadership...\n");
2019
2020 return -EINVAL;
2021 }
2022
2023 /*
2024 * It's important to set the bp->state to the value different from
2025 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
2026 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
2027 */
2028 bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
2029 smp_mb();
2030
2031 /* Stop Tx */
2032 bnx2x_tx_disable(bp);
2033
2034 #ifdef BCM_CNIC
2035 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
2036 #endif
2037
2038 bp->rx_mode = BNX2X_RX_MODE_NONE;
2039
2040 del_timer_sync(&bp->timer);
2041
2042 /* Set ALWAYS_ALIVE bit in shmem */
2043 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
2044
2045 bnx2x_drv_pulse(bp);
2046
2047 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
2048
2049 /* Cleanup the chip if needed */
2050 if (unload_mode != UNLOAD_RECOVERY)
2051 bnx2x_chip_cleanup(bp, unload_mode);
2052 else {
2053 /* Send the UNLOAD_REQUEST to the MCP */
2054 bnx2x_send_unload_req(bp, unload_mode);
2055
2056 /*
2057 * Prevent transactions to host from the functions on the
2058 * engine that doesn't reset global blocks in case of global
2059 * attention once gloabl blocks are reset and gates are opened
2060 * (the engine which leader will perform the recovery
2061 * last).
2062 */
2063 if (!CHIP_IS_E1x(bp))
2064 bnx2x_pf_disable(bp);
2065
2066 /* Disable HW interrupts, NAPI */
2067 bnx2x_netif_stop(bp, 1);
2068
2069 /* Release IRQs */
2070 bnx2x_free_irq(bp);
2071
2072 /* Report UNLOAD_DONE to MCP */
2073 bnx2x_send_unload_done(bp);
2074 }
2075
2076 /*
2077 * At this stage no more interrupts will arrive so we may safly clean
2078 * the queueable objects here in case they failed to get cleaned so far.
2079 */
2080 bnx2x_squeeze_objects(bp);
2081
2082 /* There should be no more pending SP commands at this stage */
2083 bp->sp_state = 0;
2084
2085 bp->port.pmf = 0;
2086
2087 /* Free SKBs, SGEs, TPA pool and driver internals */
2088 bnx2x_free_skbs(bp);
2089 for_each_rx_queue(bp, i)
2090 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2091
2092 bnx2x_free_mem(bp);
2093
2094 bp->state = BNX2X_STATE_CLOSED;
2095
2096 /* Check if there are pending parity attentions. If there are - set
2097 * RECOVERY_IN_PROGRESS.
2098 */
2099 if (bnx2x_chk_parity_attn(bp, &global, false)) {
2100 bnx2x_set_reset_in_progress(bp);
2101
2102 /* Set RESET_IS_GLOBAL if needed */
2103 if (global)
2104 bnx2x_set_reset_global(bp);
2105 }
2106
2107
2108 /* The last driver must disable a "close the gate" if there is no
2109 * parity attention or "process kill" pending.
2110 */
2111 if (!bnx2x_dec_load_cnt(bp) && bnx2x_reset_is_done(bp, BP_PATH(bp)))
2112 bnx2x_disable_close_the_gate(bp);
2113
2114 return 0;
2115 }
2116
2117 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
2118 {
2119 u16 pmcsr;
2120
2121 /* If there is no power capability, silently succeed */
2122 if (!bp->pm_cap) {
2123 DP(NETIF_MSG_HW, "No power capability. Breaking.\n");
2124 return 0;
2125 }
2126
2127 pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr);
2128
2129 switch (state) {
2130 case PCI_D0:
2131 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2132 ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
2133 PCI_PM_CTRL_PME_STATUS));
2134
2135 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
2136 /* delay required during transition out of D3hot */
2137 msleep(20);
2138 break;
2139
2140 case PCI_D3hot:
2141 /* If there are other clients above don't
2142 shut down the power */
2143 if (atomic_read(&bp->pdev->enable_cnt) != 1)
2144 return 0;
2145 /* Don't shut down the power for emulation and FPGA */
2146 if (CHIP_REV_IS_SLOW(bp))
2147 return 0;
2148
2149 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2150 pmcsr |= 3;
2151
2152 if (bp->wol)
2153 pmcsr |= PCI_PM_CTRL_PME_ENABLE;
2154
2155 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2156 pmcsr);
2157
2158 /* No more memory access after this point until
2159 * device is brought back to D0.
2160 */
2161 break;
2162
2163 default:
2164 return -EINVAL;
2165 }
2166 return 0;
2167 }
2168
2169 /*
2170 * net_device service functions
2171 */
2172 int bnx2x_poll(struct napi_struct *napi, int budget)
2173 {
2174 int work_done = 0;
2175 u8 cos;
2176 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
2177 napi);
2178 struct bnx2x *bp = fp->bp;
2179
2180 while (1) {
2181 #ifdef BNX2X_STOP_ON_ERROR
2182 if (unlikely(bp->panic)) {
2183 napi_complete(napi);
2184 return 0;
2185 }
2186 #endif
2187
2188 for_each_cos_in_tx_queue(fp, cos)
2189 if (bnx2x_tx_queue_has_work(&fp->txdata[cos]))
2190 bnx2x_tx_int(bp, &fp->txdata[cos]);
2191
2192
2193 if (bnx2x_has_rx_work(fp)) {
2194 work_done += bnx2x_rx_int(fp, budget - work_done);
2195
2196 /* must not complete if we consumed full budget */
2197 if (work_done >= budget)
2198 break;
2199 }
2200
2201 /* Fall out from the NAPI loop if needed */
2202 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2203 #ifdef BCM_CNIC
2204 /* No need to update SB for FCoE L2 ring as long as
2205 * it's connected to the default SB and the SB
2206 * has been updated when NAPI was scheduled.
2207 */
2208 if (IS_FCOE_FP(fp)) {
2209 napi_complete(napi);
2210 break;
2211 }
2212 #endif
2213
2214 bnx2x_update_fpsb_idx(fp);
2215 /* bnx2x_has_rx_work() reads the status block,
2216 * thus we need to ensure that status block indices
2217 * have been actually read (bnx2x_update_fpsb_idx)
2218 * prior to this check (bnx2x_has_rx_work) so that
2219 * we won't write the "newer" value of the status block
2220 * to IGU (if there was a DMA right after
2221 * bnx2x_has_rx_work and if there is no rmb, the memory
2222 * reading (bnx2x_update_fpsb_idx) may be postponed
2223 * to right before bnx2x_ack_sb). In this case there
2224 * will never be another interrupt until there is
2225 * another update of the status block, while there
2226 * is still unhandled work.
2227 */
2228 rmb();
2229
2230 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2231 napi_complete(napi);
2232 /* Re-enable interrupts */
2233 DP(NETIF_MSG_HW,
2234 "Update index to %d\n", fp->fp_hc_idx);
2235 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
2236 le16_to_cpu(fp->fp_hc_idx),
2237 IGU_INT_ENABLE, 1);
2238 break;
2239 }
2240 }
2241 }
2242
2243 return work_done;
2244 }
2245
2246 /* we split the first BD into headers and data BDs
2247 * to ease the pain of our fellow microcode engineers
2248 * we use one mapping for both BDs
2249 * So far this has only been observed to happen
2250 * in Other Operating Systems(TM)
2251 */
2252 static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
2253 struct bnx2x_fp_txdata *txdata,
2254 struct sw_tx_bd *tx_buf,
2255 struct eth_tx_start_bd **tx_bd, u16 hlen,
2256 u16 bd_prod, int nbd)
2257 {
2258 struct eth_tx_start_bd *h_tx_bd = *tx_bd;
2259 struct eth_tx_bd *d_tx_bd;
2260 dma_addr_t mapping;
2261 int old_len = le16_to_cpu(h_tx_bd->nbytes);
2262
2263 /* first fix first BD */
2264 h_tx_bd->nbd = cpu_to_le16(nbd);
2265 h_tx_bd->nbytes = cpu_to_le16(hlen);
2266
2267 DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d "
2268 "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi,
2269 h_tx_bd->addr_lo, h_tx_bd->nbd);
2270
2271 /* now get a new data BD
2272 * (after the pbd) and fill it */
2273 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2274 d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2275
2276 mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
2277 le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
2278
2279 d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2280 d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2281 d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
2282
2283 /* this marks the BD as one that has no individual mapping */
2284 tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
2285
2286 DP(NETIF_MSG_TX_QUEUED,
2287 "TSO split data size is %d (%x:%x)\n",
2288 d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
2289
2290 /* update tx_bd */
2291 *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
2292
2293 return bd_prod;
2294 }
2295
2296 static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
2297 {
2298 if (fix > 0)
2299 csum = (u16) ~csum_fold(csum_sub(csum,
2300 csum_partial(t_header - fix, fix, 0)));
2301
2302 else if (fix < 0)
2303 csum = (u16) ~csum_fold(csum_add(csum,
2304 csum_partial(t_header, -fix, 0)));
2305
2306 return swab16(csum);
2307 }
2308
2309 static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
2310 {
2311 u32 rc;
2312
2313 if (skb->ip_summed != CHECKSUM_PARTIAL)
2314 rc = XMIT_PLAIN;
2315
2316 else {
2317 if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) {
2318 rc = XMIT_CSUM_V6;
2319 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2320 rc |= XMIT_CSUM_TCP;
2321
2322 } else {
2323 rc = XMIT_CSUM_V4;
2324 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2325 rc |= XMIT_CSUM_TCP;
2326 }
2327 }
2328
2329 if (skb_is_gso_v6(skb))
2330 rc |= XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6;
2331 else if (skb_is_gso(skb))
2332 rc |= XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP;
2333
2334 return rc;
2335 }
2336
2337 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2338 /* check if packet requires linearization (packet is too fragmented)
2339 no need to check fragmentation if page size > 8K (there will be no
2340 violation to FW restrictions) */
2341 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
2342 u32 xmit_type)
2343 {
2344 int to_copy = 0;
2345 int hlen = 0;
2346 int first_bd_sz = 0;
2347
2348 /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
2349 if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
2350
2351 if (xmit_type & XMIT_GSO) {
2352 unsigned short lso_mss = skb_shinfo(skb)->gso_size;
2353 /* Check if LSO packet needs to be copied:
2354 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
2355 int wnd_size = MAX_FETCH_BD - 3;
2356 /* Number of windows to check */
2357 int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
2358 int wnd_idx = 0;
2359 int frag_idx = 0;
2360 u32 wnd_sum = 0;
2361
2362 /* Headers length */
2363 hlen = (int)(skb_transport_header(skb) - skb->data) +
2364 tcp_hdrlen(skb);
2365
2366 /* Amount of data (w/o headers) on linear part of SKB*/
2367 first_bd_sz = skb_headlen(skb) - hlen;
2368
2369 wnd_sum = first_bd_sz;
2370
2371 /* Calculate the first sum - it's special */
2372 for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
2373 wnd_sum +=
2374 skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
2375
2376 /* If there was data on linear skb data - check it */
2377 if (first_bd_sz > 0) {
2378 if (unlikely(wnd_sum < lso_mss)) {
2379 to_copy = 1;
2380 goto exit_lbl;
2381 }
2382
2383 wnd_sum -= first_bd_sz;
2384 }
2385
2386 /* Others are easier: run through the frag list and
2387 check all windows */
2388 for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
2389 wnd_sum +=
2390 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
2391
2392 if (unlikely(wnd_sum < lso_mss)) {
2393 to_copy = 1;
2394 break;
2395 }
2396 wnd_sum -=
2397 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
2398 }
2399 } else {
2400 /* in non-LSO too fragmented packet should always
2401 be linearized */
2402 to_copy = 1;
2403 }
2404 }
2405
2406 exit_lbl:
2407 if (unlikely(to_copy))
2408 DP(NETIF_MSG_TX_QUEUED,
2409 "Linearization IS REQUIRED for %s packet. "
2410 "num_frags %d hlen %d first_bd_sz %d\n",
2411 (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
2412 skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
2413
2414 return to_copy;
2415 }
2416 #endif
2417
2418 static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
2419 u32 xmit_type)
2420 {
2421 *parsing_data |= (skb_shinfo(skb)->gso_size <<
2422 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
2423 ETH_TX_PARSE_BD_E2_LSO_MSS;
2424 if ((xmit_type & XMIT_GSO_V6) &&
2425 (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
2426 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
2427 }
2428
2429 /**
2430 * bnx2x_set_pbd_gso - update PBD in GSO case.
2431 *
2432 * @skb: packet skb
2433 * @pbd: parse BD
2434 * @xmit_type: xmit flags
2435 */
2436 static inline void bnx2x_set_pbd_gso(struct sk_buff *skb,
2437 struct eth_tx_parse_bd_e1x *pbd,
2438 u32 xmit_type)
2439 {
2440 pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
2441 pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq);
2442 pbd->tcp_flags = pbd_tcp_flags(skb);
2443
2444 if (xmit_type & XMIT_GSO_V4) {
2445 pbd->ip_id = swab16(ip_hdr(skb)->id);
2446 pbd->tcp_pseudo_csum =
2447 swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
2448 ip_hdr(skb)->daddr,
2449 0, IPPROTO_TCP, 0));
2450
2451 } else
2452 pbd->tcp_pseudo_csum =
2453 swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2454 &ipv6_hdr(skb)->daddr,
2455 0, IPPROTO_TCP, 0));
2456
2457 pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN;
2458 }
2459
2460 /**
2461 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
2462 *
2463 * @bp: driver handle
2464 * @skb: packet skb
2465 * @parsing_data: data to be updated
2466 * @xmit_type: xmit flags
2467 *
2468 * 57712 related
2469 */
2470 static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
2471 u32 *parsing_data, u32 xmit_type)
2472 {
2473 *parsing_data |=
2474 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
2475 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) &
2476 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W;
2477
2478 if (xmit_type & XMIT_CSUM_TCP) {
2479 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
2480 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
2481 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
2482
2483 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
2484 } else
2485 /* We support checksum offload for TCP and UDP only.
2486 * No need to pass the UDP header length - it's a constant.
2487 */
2488 return skb_transport_header(skb) +
2489 sizeof(struct udphdr) - skb->data;
2490 }
2491
2492 static inline void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2493 struct eth_tx_start_bd *tx_start_bd, u32 xmit_type)
2494 {
2495 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
2496
2497 if (xmit_type & XMIT_CSUM_V4)
2498 tx_start_bd->bd_flags.as_bitfield |=
2499 ETH_TX_BD_FLAGS_IP_CSUM;
2500 else
2501 tx_start_bd->bd_flags.as_bitfield |=
2502 ETH_TX_BD_FLAGS_IPV6;
2503
2504 if (!(xmit_type & XMIT_CSUM_TCP))
2505 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
2506 }
2507
2508 /**
2509 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
2510 *
2511 * @bp: driver handle
2512 * @skb: packet skb
2513 * @pbd: parse BD to be updated
2514 * @xmit_type: xmit flags
2515 */
2516 static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2517 struct eth_tx_parse_bd_e1x *pbd,
2518 u32 xmit_type)
2519 {
2520 u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
2521
2522 /* for now NS flag is not used in Linux */
2523 pbd->global_data =
2524 (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
2525 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
2526
2527 pbd->ip_hlen_w = (skb_transport_header(skb) -
2528 skb_network_header(skb)) >> 1;
2529
2530 hlen += pbd->ip_hlen_w;
2531
2532 /* We support checksum offload for TCP and UDP only */
2533 if (xmit_type & XMIT_CSUM_TCP)
2534 hlen += tcp_hdrlen(skb) / 2;
2535 else
2536 hlen += sizeof(struct udphdr) / 2;
2537
2538 pbd->total_hlen_w = cpu_to_le16(hlen);
2539 hlen = hlen*2;
2540
2541 if (xmit_type & XMIT_CSUM_TCP) {
2542 pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check);
2543
2544 } else {
2545 s8 fix = SKB_CS_OFF(skb); /* signed! */
2546
2547 DP(NETIF_MSG_TX_QUEUED,
2548 "hlen %d fix %d csum before fix %x\n",
2549 le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
2550
2551 /* HW bug: fixup the CSUM */
2552 pbd->tcp_pseudo_csum =
2553 bnx2x_csum_fix(skb_transport_header(skb),
2554 SKB_CS(skb), fix);
2555
2556 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
2557 pbd->tcp_pseudo_csum);
2558 }
2559
2560 return hlen;
2561 }
2562
2563 /* called with netif_tx_lock
2564 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
2565 * netif_wake_queue()
2566 */
2567 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
2568 {
2569 struct bnx2x *bp = netdev_priv(dev);
2570
2571 struct bnx2x_fastpath *fp;
2572 struct netdev_queue *txq;
2573 struct bnx2x_fp_txdata *txdata;
2574 struct sw_tx_bd *tx_buf;
2575 struct eth_tx_start_bd *tx_start_bd, *first_bd;
2576 struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
2577 struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
2578 struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
2579 u32 pbd_e2_parsing_data = 0;
2580 u16 pkt_prod, bd_prod;
2581 int nbd, txq_index, fp_index, txdata_index;
2582 dma_addr_t mapping;
2583 u32 xmit_type = bnx2x_xmit_type(bp, skb);
2584 int i;
2585 u8 hlen = 0;
2586 __le16 pkt_size = 0;
2587 struct ethhdr *eth;
2588 u8 mac_type = UNICAST_ADDRESS;
2589
2590 #ifdef BNX2X_STOP_ON_ERROR
2591 if (unlikely(bp->panic))
2592 return NETDEV_TX_BUSY;
2593 #endif
2594
2595 txq_index = skb_get_queue_mapping(skb);
2596 txq = netdev_get_tx_queue(dev, txq_index);
2597
2598 BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + FCOE_PRESENT);
2599
2600 /* decode the fastpath index and the cos index from the txq */
2601 fp_index = TXQ_TO_FP(txq_index);
2602 txdata_index = TXQ_TO_COS(txq_index);
2603
2604 #ifdef BCM_CNIC
2605 /*
2606 * Override the above for the FCoE queue:
2607 * - FCoE fp entry is right after the ETH entries.
2608 * - FCoE L2 queue uses bp->txdata[0] only.
2609 */
2610 if (unlikely(!NO_FCOE(bp) && (txq_index ==
2611 bnx2x_fcoe_tx(bp, txq_index)))) {
2612 fp_index = FCOE_IDX;
2613 txdata_index = 0;
2614 }
2615 #endif
2616
2617 /* enable this debug print to view the transmission queue being used
2618 DP(BNX2X_MSG_FP, "indices: txq %d, fp %d, txdata %d\n",
2619 txq_index, fp_index, txdata_index); */
2620
2621 /* locate the fastpath and the txdata */
2622 fp = &bp->fp[fp_index];
2623 txdata = &fp->txdata[txdata_index];
2624
2625 /* enable this debug print to view the tranmission details
2626 DP(BNX2X_MSG_FP,"transmitting packet cid %d fp index %d txdata_index %d"
2627 " tx_data ptr %p fp pointer %p\n",
2628 txdata->cid, fp_index, txdata_index, txdata, fp); */
2629
2630 if (unlikely(bnx2x_tx_avail(bp, txdata) <
2631 (skb_shinfo(skb)->nr_frags + 3))) {
2632 fp->eth_q_stats.driver_xoff++;
2633 netif_tx_stop_queue(txq);
2634 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
2635 return NETDEV_TX_BUSY;
2636 }
2637
2638 DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x "
2639 "protocol(%x,%x) gso type %x xmit_type %x\n",
2640 txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
2641 ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
2642
2643 eth = (struct ethhdr *)skb->data;
2644
2645 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
2646 if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
2647 if (is_broadcast_ether_addr(eth->h_dest))
2648 mac_type = BROADCAST_ADDRESS;
2649 else
2650 mac_type = MULTICAST_ADDRESS;
2651 }
2652
2653 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2654 /* First, check if we need to linearize the skb (due to FW
2655 restrictions). No need to check fragmentation if page size > 8K
2656 (there will be no violation to FW restrictions) */
2657 if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
2658 /* Statistics of linearization */
2659 bp->lin_cnt++;
2660 if (skb_linearize(skb) != 0) {
2661 DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - "
2662 "silently dropping this SKB\n");
2663 dev_kfree_skb_any(skb);
2664 return NETDEV_TX_OK;
2665 }
2666 }
2667 #endif
2668 /* Map skb linear data for DMA */
2669 mapping = dma_map_single(&bp->pdev->dev, skb->data,
2670 skb_headlen(skb), DMA_TO_DEVICE);
2671 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
2672 DP(NETIF_MSG_TX_QUEUED, "SKB mapping failed - "
2673 "silently dropping this SKB\n");
2674 dev_kfree_skb_any(skb);
2675 return NETDEV_TX_OK;
2676 }
2677 /*
2678 Please read carefully. First we use one BD which we mark as start,
2679 then we have a parsing info BD (used for TSO or xsum),
2680 and only then we have the rest of the TSO BDs.
2681 (don't forget to mark the last one as last,
2682 and to unmap only AFTER you write to the BD ...)
2683 And above all, all pdb sizes are in words - NOT DWORDS!
2684 */
2685
2686 /* get current pkt produced now - advance it just before sending packet
2687 * since mapping of pages may fail and cause packet to be dropped
2688 */
2689 pkt_prod = txdata->tx_pkt_prod;
2690 bd_prod = TX_BD(txdata->tx_bd_prod);
2691
2692 /* get a tx_buf and first BD
2693 * tx_start_bd may be changed during SPLIT,
2694 * but first_bd will always stay first
2695 */
2696 tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
2697 tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
2698 first_bd = tx_start_bd;
2699
2700 tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
2701 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_ETH_ADDR_TYPE,
2702 mac_type);
2703
2704 /* header nbd */
2705 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1);
2706
2707 /* remember the first BD of the packet */
2708 tx_buf->first_bd = txdata->tx_bd_prod;
2709 tx_buf->skb = skb;
2710 tx_buf->flags = 0;
2711
2712 DP(NETIF_MSG_TX_QUEUED,
2713 "sending pkt %u @%p next_idx %u bd %u @%p\n",
2714 pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
2715
2716 if (vlan_tx_tag_present(skb)) {
2717 tx_start_bd->vlan_or_ethertype =
2718 cpu_to_le16(vlan_tx_tag_get(skb));
2719 tx_start_bd->bd_flags.as_bitfield |=
2720 (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
2721 } else
2722 tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
2723
2724 /* turn on parsing and get a BD */
2725 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2726
2727 if (xmit_type & XMIT_CSUM)
2728 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
2729
2730 if (!CHIP_IS_E1x(bp)) {
2731 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
2732 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
2733 /* Set PBD in checksum offload case */
2734 if (xmit_type & XMIT_CSUM)
2735 hlen = bnx2x_set_pbd_csum_e2(bp, skb,
2736 &pbd_e2_parsing_data,
2737 xmit_type);
2738 if (IS_MF_SI(bp)) {
2739 /*
2740 * fill in the MAC addresses in the PBD - for local
2741 * switching
2742 */
2743 bnx2x_set_fw_mac_addr(&pbd_e2->src_mac_addr_hi,
2744 &pbd_e2->src_mac_addr_mid,
2745 &pbd_e2->src_mac_addr_lo,
2746 eth->h_source);
2747 bnx2x_set_fw_mac_addr(&pbd_e2->dst_mac_addr_hi,
2748 &pbd_e2->dst_mac_addr_mid,
2749 &pbd_e2->dst_mac_addr_lo,
2750 eth->h_dest);
2751 }
2752 } else {
2753 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
2754 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
2755 /* Set PBD in checksum offload case */
2756 if (xmit_type & XMIT_CSUM)
2757 hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
2758
2759 }
2760
2761 /* Setup the data pointer of the first BD of the packet */
2762 tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2763 tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2764 nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
2765 tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
2766 pkt_size = tx_start_bd->nbytes;
2767
2768 DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d"
2769 " nbytes %d flags %x vlan %x\n",
2770 tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
2771 le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes),
2772 tx_start_bd->bd_flags.as_bitfield,
2773 le16_to_cpu(tx_start_bd->vlan_or_ethertype));
2774
2775 if (xmit_type & XMIT_GSO) {
2776
2777 DP(NETIF_MSG_TX_QUEUED,
2778 "TSO packet len %d hlen %d total len %d tso size %d\n",
2779 skb->len, hlen, skb_headlen(skb),
2780 skb_shinfo(skb)->gso_size);
2781
2782 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
2783
2784 if (unlikely(skb_headlen(skb) > hlen))
2785 bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
2786 &tx_start_bd, hlen,
2787 bd_prod, ++nbd);
2788 if (!CHIP_IS_E1x(bp))
2789 bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
2790 xmit_type);
2791 else
2792 bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
2793 }
2794
2795 /* Set the PBD's parsing_data field if not zero
2796 * (for the chips newer than 57711).
2797 */
2798 if (pbd_e2_parsing_data)
2799 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
2800
2801 tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
2802
2803 /* Handle fragmented skb */
2804 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2805 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2806
2807 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
2808 skb_frag_size(frag), DMA_TO_DEVICE);
2809 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
2810 unsigned int pkts_compl = 0, bytes_compl = 0;
2811
2812 DP(NETIF_MSG_TX_QUEUED, "Unable to map page - "
2813 "dropping packet...\n");
2814
2815 /* we need unmap all buffers already mapped
2816 * for this SKB;
2817 * first_bd->nbd need to be properly updated
2818 * before call to bnx2x_free_tx_pkt
2819 */
2820 first_bd->nbd = cpu_to_le16(nbd);
2821 bnx2x_free_tx_pkt(bp, txdata,
2822 TX_BD(txdata->tx_pkt_prod),
2823 &pkts_compl, &bytes_compl);
2824 return NETDEV_TX_OK;
2825 }
2826
2827 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2828 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2829 if (total_pkt_bd == NULL)
2830 total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2831
2832 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2833 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2834 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
2835 le16_add_cpu(&pkt_size, skb_frag_size(frag));
2836 nbd++;
2837
2838 DP(NETIF_MSG_TX_QUEUED,
2839 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
2840 i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
2841 le16_to_cpu(tx_data_bd->nbytes));
2842 }
2843
2844 DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
2845
2846 /* update with actual num BDs */
2847 first_bd->nbd = cpu_to_le16(nbd);
2848
2849 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2850
2851 /* now send a tx doorbell, counting the next BD
2852 * if the packet contains or ends with it
2853 */
2854 if (TX_BD_POFF(bd_prod) < nbd)
2855 nbd++;
2856
2857 /* total_pkt_bytes should be set on the first data BD if
2858 * it's not an LSO packet and there is more than one
2859 * data BD. In this case pkt_size is limited by an MTU value.
2860 * However we prefer to set it for an LSO packet (while we don't
2861 * have to) in order to save some CPU cycles in a none-LSO
2862 * case, when we much more care about them.
2863 */
2864 if (total_pkt_bd != NULL)
2865 total_pkt_bd->total_pkt_bytes = pkt_size;
2866
2867 if (pbd_e1x)
2868 DP(NETIF_MSG_TX_QUEUED,
2869 "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u"
2870 " tcp_flags %x xsum %x seq %u hlen %u\n",
2871 pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
2872 pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
2873 pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
2874 le16_to_cpu(pbd_e1x->total_hlen_w));
2875 if (pbd_e2)
2876 DP(NETIF_MSG_TX_QUEUED,
2877 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
2878 pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid,
2879 pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi,
2880 pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo,
2881 pbd_e2->parsing_data);
2882 DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
2883
2884 netdev_tx_sent_queue(txq, skb->len);
2885
2886 txdata->tx_pkt_prod++;
2887 /*
2888 * Make sure that the BD data is updated before updating the producer
2889 * since FW might read the BD right after the producer is updated.
2890 * This is only applicable for weak-ordered memory model archs such
2891 * as IA-64. The following barrier is also mandatory since FW will
2892 * assumes packets must have BDs.
2893 */
2894 wmb();
2895
2896 txdata->tx_db.data.prod += nbd;
2897 barrier();
2898
2899 DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
2900
2901 mmiowb();
2902
2903 txdata->tx_bd_prod += nbd;
2904
2905 if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_SKB_FRAGS + 3)) {
2906 netif_tx_stop_queue(txq);
2907
2908 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
2909 * ordering of set_bit() in netif_tx_stop_queue() and read of
2910 * fp->bd_tx_cons */
2911 smp_mb();
2912
2913 fp->eth_q_stats.driver_xoff++;
2914 if (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3)
2915 netif_tx_wake_queue(txq);
2916 }
2917 txdata->tx_pkt++;
2918
2919 return NETDEV_TX_OK;
2920 }
2921
2922 /**
2923 * bnx2x_setup_tc - routine to configure net_device for multi tc
2924 *
2925 * @netdev: net device to configure
2926 * @tc: number of traffic classes to enable
2927 *
2928 * callback connected to the ndo_setup_tc function pointer
2929 */
2930 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
2931 {
2932 int cos, prio, count, offset;
2933 struct bnx2x *bp = netdev_priv(dev);
2934
2935 /* setup tc must be called under rtnl lock */
2936 ASSERT_RTNL();
2937
2938 /* no traffic classes requested. aborting */
2939 if (!num_tc) {
2940 netdev_reset_tc(dev);
2941 return 0;
2942 }
2943
2944 /* requested to support too many traffic classes */
2945 if (num_tc > bp->max_cos) {
2946 DP(NETIF_MSG_TX_ERR, "support for too many traffic classes"
2947 " requested: %d. max supported is %d\n",
2948 num_tc, bp->max_cos);
2949 return -EINVAL;
2950 }
2951
2952 /* declare amount of supported traffic classes */
2953 if (netdev_set_num_tc(dev, num_tc)) {
2954 DP(NETIF_MSG_TX_ERR, "failed to declare %d traffic classes\n",
2955 num_tc);
2956 return -EINVAL;
2957 }
2958
2959 /* configure priority to traffic class mapping */
2960 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
2961 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[prio]);
2962 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n",
2963 prio, bp->prio_to_cos[prio]);
2964 }
2965
2966
2967 /* Use this configuration to diffrentiate tc0 from other COSes
2968 This can be used for ets or pfc, and save the effort of setting
2969 up a multio class queue disc or negotiating DCBX with a switch
2970 netdev_set_prio_tc_map(dev, 0, 0);
2971 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
2972 for (prio = 1; prio < 16; prio++) {
2973 netdev_set_prio_tc_map(dev, prio, 1);
2974 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
2975 } */
2976
2977 /* configure traffic class to transmission queue mapping */
2978 for (cos = 0; cos < bp->max_cos; cos++) {
2979 count = BNX2X_NUM_ETH_QUEUES(bp);
2980 offset = cos * MAX_TXQS_PER_COS;
2981 netdev_set_tc_queue(dev, cos, count, offset);
2982 DP(BNX2X_MSG_SP, "mapping tc %d to offset %d count %d\n",
2983 cos, offset, count);
2984 }
2985
2986 return 0;
2987 }
2988
2989 /* called with rtnl_lock */
2990 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
2991 {
2992 struct sockaddr *addr = p;
2993 struct bnx2x *bp = netdev_priv(dev);
2994 int rc = 0;
2995
2996 if (!bnx2x_is_valid_ether_addr(bp, addr->sa_data))
2997 return -EINVAL;
2998
2999 #ifdef BCM_CNIC
3000 if (IS_MF_ISCSI_SD(bp) && !is_zero_ether_addr(addr->sa_data))
3001 return -EINVAL;
3002 #endif
3003
3004 if (netif_running(dev)) {
3005 rc = bnx2x_set_eth_mac(bp, false);
3006 if (rc)
3007 return rc;
3008 }
3009
3010 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3011
3012 if (netif_running(dev))
3013 rc = bnx2x_set_eth_mac(bp, true);
3014
3015 return rc;
3016 }
3017
3018 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
3019 {
3020 union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
3021 struct bnx2x_fastpath *fp = &bp->fp[fp_index];
3022 u8 cos;
3023
3024 /* Common */
3025 #ifdef BCM_CNIC
3026 if (IS_FCOE_IDX(fp_index)) {
3027 memset(sb, 0, sizeof(union host_hc_status_block));
3028 fp->status_blk_mapping = 0;
3029
3030 } else {
3031 #endif
3032 /* status blocks */
3033 if (!CHIP_IS_E1x(bp))
3034 BNX2X_PCI_FREE(sb->e2_sb,
3035 bnx2x_fp(bp, fp_index,
3036 status_blk_mapping),
3037 sizeof(struct host_hc_status_block_e2));
3038 else
3039 BNX2X_PCI_FREE(sb->e1x_sb,
3040 bnx2x_fp(bp, fp_index,
3041 status_blk_mapping),
3042 sizeof(struct host_hc_status_block_e1x));
3043 #ifdef BCM_CNIC
3044 }
3045 #endif
3046 /* Rx */
3047 if (!skip_rx_queue(bp, fp_index)) {
3048 bnx2x_free_rx_bds(fp);
3049
3050 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3051 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
3052 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
3053 bnx2x_fp(bp, fp_index, rx_desc_mapping),
3054 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3055
3056 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
3057 bnx2x_fp(bp, fp_index, rx_comp_mapping),
3058 sizeof(struct eth_fast_path_rx_cqe) *
3059 NUM_RCQ_BD);
3060
3061 /* SGE ring */
3062 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
3063 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
3064 bnx2x_fp(bp, fp_index, rx_sge_mapping),
3065 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3066 }
3067
3068 /* Tx */
3069 if (!skip_tx_queue(bp, fp_index)) {
3070 /* fastpath tx rings: tx_buf tx_desc */
3071 for_each_cos_in_tx_queue(fp, cos) {
3072 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3073
3074 DP(BNX2X_MSG_SP,
3075 "freeing tx memory of fp %d cos %d cid %d\n",
3076 fp_index, cos, txdata->cid);
3077
3078 BNX2X_FREE(txdata->tx_buf_ring);
3079 BNX2X_PCI_FREE(txdata->tx_desc_ring,
3080 txdata->tx_desc_mapping,
3081 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3082 }
3083 }
3084 /* end of fastpath */
3085 }
3086
3087 void bnx2x_free_fp_mem(struct bnx2x *bp)
3088 {
3089 int i;
3090 for_each_queue(bp, i)
3091 bnx2x_free_fp_mem_at(bp, i);
3092 }
3093
3094 static inline void set_sb_shortcuts(struct bnx2x *bp, int index)
3095 {
3096 union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
3097 if (!CHIP_IS_E1x(bp)) {
3098 bnx2x_fp(bp, index, sb_index_values) =
3099 (__le16 *)status_blk.e2_sb->sb.index_values;
3100 bnx2x_fp(bp, index, sb_running_index) =
3101 (__le16 *)status_blk.e2_sb->sb.running_index;
3102 } else {
3103 bnx2x_fp(bp, index, sb_index_values) =
3104 (__le16 *)status_blk.e1x_sb->sb.index_values;
3105 bnx2x_fp(bp, index, sb_running_index) =
3106 (__le16 *)status_blk.e1x_sb->sb.running_index;
3107 }
3108 }
3109
3110 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
3111 {
3112 union host_hc_status_block *sb;
3113 struct bnx2x_fastpath *fp = &bp->fp[index];
3114 int ring_size = 0;
3115 u8 cos;
3116 int rx_ring_size = 0;
3117
3118 #ifdef BCM_CNIC
3119 if (!bp->rx_ring_size && IS_MF_ISCSI_SD(bp)) {
3120 rx_ring_size = MIN_RX_SIZE_NONTPA;
3121 bp->rx_ring_size = rx_ring_size;
3122 } else
3123 #endif
3124 if (!bp->rx_ring_size) {
3125
3126 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
3127
3128 /* allocate at least number of buffers required by FW */
3129 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
3130 MIN_RX_SIZE_TPA, rx_ring_size);
3131
3132 bp->rx_ring_size = rx_ring_size;
3133 } else /* if rx_ring_size specified - use it */
3134 rx_ring_size = bp->rx_ring_size;
3135
3136 /* Common */
3137 sb = &bnx2x_fp(bp, index, status_blk);
3138 #ifdef BCM_CNIC
3139 if (!IS_FCOE_IDX(index)) {
3140 #endif
3141 /* status blocks */
3142 if (!CHIP_IS_E1x(bp))
3143 BNX2X_PCI_ALLOC(sb->e2_sb,
3144 &bnx2x_fp(bp, index, status_blk_mapping),
3145 sizeof(struct host_hc_status_block_e2));
3146 else
3147 BNX2X_PCI_ALLOC(sb->e1x_sb,
3148 &bnx2x_fp(bp, index, status_blk_mapping),
3149 sizeof(struct host_hc_status_block_e1x));
3150 #ifdef BCM_CNIC
3151 }
3152 #endif
3153
3154 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
3155 * set shortcuts for it.
3156 */
3157 if (!IS_FCOE_IDX(index))
3158 set_sb_shortcuts(bp, index);
3159
3160 /* Tx */
3161 if (!skip_tx_queue(bp, index)) {
3162 /* fastpath tx rings: tx_buf tx_desc */
3163 for_each_cos_in_tx_queue(fp, cos) {
3164 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3165
3166 DP(BNX2X_MSG_SP, "allocating tx memory of "
3167 "fp %d cos %d\n",
3168 index, cos);
3169
3170 BNX2X_ALLOC(txdata->tx_buf_ring,
3171 sizeof(struct sw_tx_bd) * NUM_TX_BD);
3172 BNX2X_PCI_ALLOC(txdata->tx_desc_ring,
3173 &txdata->tx_desc_mapping,
3174 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3175 }
3176 }
3177
3178 /* Rx */
3179 if (!skip_rx_queue(bp, index)) {
3180 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3181 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_buf_ring),
3182 sizeof(struct sw_rx_bd) * NUM_RX_BD);
3183 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_desc_ring),
3184 &bnx2x_fp(bp, index, rx_desc_mapping),
3185 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3186
3187 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_comp_ring),
3188 &bnx2x_fp(bp, index, rx_comp_mapping),
3189 sizeof(struct eth_fast_path_rx_cqe) *
3190 NUM_RCQ_BD);
3191
3192 /* SGE ring */
3193 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_page_ring),
3194 sizeof(struct sw_rx_page) * NUM_RX_SGE);
3195 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_sge_ring),
3196 &bnx2x_fp(bp, index, rx_sge_mapping),
3197 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3198 /* RX BD ring */
3199 bnx2x_set_next_page_rx_bd(fp);
3200
3201 /* CQ ring */
3202 bnx2x_set_next_page_rx_cq(fp);
3203
3204 /* BDs */
3205 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
3206 if (ring_size < rx_ring_size)
3207 goto alloc_mem_err;
3208 }
3209
3210 return 0;
3211
3212 /* handles low memory cases */
3213 alloc_mem_err:
3214 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
3215 index, ring_size);
3216 /* FW will drop all packets if queue is not big enough,
3217 * In these cases we disable the queue
3218 * Min size is different for OOO, TPA and non-TPA queues
3219 */
3220 if (ring_size < (fp->disable_tpa ?
3221 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
3222 /* release memory allocated for this queue */
3223 bnx2x_free_fp_mem_at(bp, index);
3224 return -ENOMEM;
3225 }
3226 return 0;
3227 }
3228
3229 int bnx2x_alloc_fp_mem(struct bnx2x *bp)
3230 {
3231 int i;
3232
3233 /**
3234 * 1. Allocate FP for leading - fatal if error
3235 * 2. {CNIC} Allocate FCoE FP - fatal if error
3236 * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
3237 * 4. Allocate RSS - fix number of queues if error
3238 */
3239
3240 /* leading */
3241 if (bnx2x_alloc_fp_mem_at(bp, 0))
3242 return -ENOMEM;
3243
3244 #ifdef BCM_CNIC
3245 if (!NO_FCOE(bp))
3246 /* FCoE */
3247 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX))
3248 /* we will fail load process instead of mark
3249 * NO_FCOE_FLAG
3250 */
3251 return -ENOMEM;
3252 #endif
3253
3254 /* RSS */
3255 for_each_nondefault_eth_queue(bp, i)
3256 if (bnx2x_alloc_fp_mem_at(bp, i))
3257 break;
3258
3259 /* handle memory failures */
3260 if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
3261 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
3262
3263 WARN_ON(delta < 0);
3264 #ifdef BCM_CNIC
3265 /**
3266 * move non eth FPs next to last eth FP
3267 * must be done in that order
3268 * FCOE_IDX < FWD_IDX < OOO_IDX
3269 */
3270
3271 /* move FCoE fp even NO_FCOE_FLAG is on */
3272 bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta);
3273 #endif
3274 bp->num_queues -= delta;
3275 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
3276 bp->num_queues + delta, bp->num_queues);
3277 }
3278
3279 return 0;
3280 }
3281
3282 void bnx2x_free_mem_bp(struct bnx2x *bp)
3283 {
3284 kfree(bp->fp);
3285 kfree(bp->msix_table);
3286 kfree(bp->ilt);
3287 }
3288
3289 int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp)
3290 {
3291 struct bnx2x_fastpath *fp;
3292 struct msix_entry *tbl;
3293 struct bnx2x_ilt *ilt;
3294 int msix_table_size = 0;
3295
3296 /*
3297 * The biggest MSI-X table we might need is as a maximum number of fast
3298 * path IGU SBs plus default SB (for PF).
3299 */
3300 msix_table_size = bp->igu_sb_cnt + 1;
3301
3302 /* fp array: RSS plus CNIC related L2 queues */
3303 fp = kcalloc(BNX2X_MAX_RSS_COUNT(bp) + NON_ETH_CONTEXT_USE,
3304 sizeof(*fp), GFP_KERNEL);
3305 if (!fp)
3306 goto alloc_err;
3307 bp->fp = fp;
3308
3309 /* msix table */
3310 tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
3311 if (!tbl)
3312 goto alloc_err;
3313 bp->msix_table = tbl;
3314
3315 /* ilt */
3316 ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
3317 if (!ilt)
3318 goto alloc_err;
3319 bp->ilt = ilt;
3320
3321 return 0;
3322 alloc_err:
3323 bnx2x_free_mem_bp(bp);
3324 return -ENOMEM;
3325
3326 }
3327
3328 int bnx2x_reload_if_running(struct net_device *dev)
3329 {
3330 struct bnx2x *bp = netdev_priv(dev);
3331
3332 if (unlikely(!netif_running(dev)))
3333 return 0;
3334
3335 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
3336 return bnx2x_nic_load(bp, LOAD_NORMAL);
3337 }
3338
3339 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
3340 {
3341 u32 sel_phy_idx = 0;
3342 if (bp->link_params.num_phys <= 1)
3343 return INT_PHY;
3344
3345 if (bp->link_vars.link_up) {
3346 sel_phy_idx = EXT_PHY1;
3347 /* In case link is SERDES, check if the EXT_PHY2 is the one */
3348 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
3349 (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
3350 sel_phy_idx = EXT_PHY2;
3351 } else {
3352
3353 switch (bnx2x_phy_selection(&bp->link_params)) {
3354 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
3355 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
3356 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
3357 sel_phy_idx = EXT_PHY1;
3358 break;
3359 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
3360 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
3361 sel_phy_idx = EXT_PHY2;
3362 break;
3363 }
3364 }
3365
3366 return sel_phy_idx;
3367
3368 }
3369 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
3370 {
3371 u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
3372 /*
3373 * The selected actived PHY is always after swapping (in case PHY
3374 * swapping is enabled). So when swapping is enabled, we need to reverse
3375 * the configuration
3376 */
3377
3378 if (bp->link_params.multi_phy_config &
3379 PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
3380 if (sel_phy_idx == EXT_PHY1)
3381 sel_phy_idx = EXT_PHY2;
3382 else if (sel_phy_idx == EXT_PHY2)
3383 sel_phy_idx = EXT_PHY1;
3384 }
3385 return LINK_CONFIG_IDX(sel_phy_idx);
3386 }
3387
3388 #if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
3389 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
3390 {
3391 struct bnx2x *bp = netdev_priv(dev);
3392 struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
3393
3394 switch (type) {
3395 case NETDEV_FCOE_WWNN:
3396 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
3397 cp->fcoe_wwn_node_name_lo);
3398 break;
3399 case NETDEV_FCOE_WWPN:
3400 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
3401 cp->fcoe_wwn_port_name_lo);
3402 break;
3403 default:
3404 return -EINVAL;
3405 }
3406
3407 return 0;
3408 }
3409 #endif
3410
3411 /* called with rtnl_lock */
3412 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
3413 {
3414 struct bnx2x *bp = netdev_priv(dev);
3415
3416 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3417 pr_err("Handling parity error recovery. Try again later\n");
3418 return -EAGAIN;
3419 }
3420
3421 if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
3422 ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE))
3423 return -EINVAL;
3424
3425 /* This does not race with packet allocation
3426 * because the actual alloc size is
3427 * only updated as part of load
3428 */
3429 dev->mtu = new_mtu;
3430
3431 return bnx2x_reload_if_running(dev);
3432 }
3433
3434 netdev_features_t bnx2x_fix_features(struct net_device *dev,
3435 netdev_features_t features)
3436 {
3437 struct bnx2x *bp = netdev_priv(dev);
3438
3439 /* TPA requires Rx CSUM offloading */
3440 if (!(features & NETIF_F_RXCSUM) || bp->disable_tpa)
3441 features &= ~NETIF_F_LRO;
3442
3443 return features;
3444 }
3445
3446 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
3447 {
3448 struct bnx2x *bp = netdev_priv(dev);
3449 u32 flags = bp->flags;
3450 bool bnx2x_reload = false;
3451
3452 if (features & NETIF_F_LRO)
3453 flags |= TPA_ENABLE_FLAG;
3454 else
3455 flags &= ~TPA_ENABLE_FLAG;
3456
3457 if (features & NETIF_F_LOOPBACK) {
3458 if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
3459 bp->link_params.loopback_mode = LOOPBACK_BMAC;
3460 bnx2x_reload = true;
3461 }
3462 } else {
3463 if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
3464 bp->link_params.loopback_mode = LOOPBACK_NONE;
3465 bnx2x_reload = true;
3466 }
3467 }
3468
3469 if (flags ^ bp->flags) {
3470 bp->flags = flags;
3471 bnx2x_reload = true;
3472 }
3473
3474 if (bnx2x_reload) {
3475 if (bp->recovery_state == BNX2X_RECOVERY_DONE)
3476 return bnx2x_reload_if_running(dev);
3477 /* else: bnx2x_nic_load() will be called at end of recovery */
3478 }
3479
3480 return 0;
3481 }
3482
3483 void bnx2x_tx_timeout(struct net_device *dev)
3484 {
3485 struct bnx2x *bp = netdev_priv(dev);
3486
3487 #ifdef BNX2X_STOP_ON_ERROR
3488 if (!bp->panic)
3489 bnx2x_panic();
3490 #endif
3491
3492 smp_mb__before_clear_bit();
3493 set_bit(BNX2X_SP_RTNL_TX_TIMEOUT, &bp->sp_rtnl_state);
3494 smp_mb__after_clear_bit();
3495
3496 /* This allows the netif to be shutdown gracefully before resetting */
3497 schedule_delayed_work(&bp->sp_rtnl_task, 0);
3498 }
3499
3500 int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
3501 {
3502 struct net_device *dev = pci_get_drvdata(pdev);
3503 struct bnx2x *bp;
3504
3505 if (!dev) {
3506 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3507 return -ENODEV;
3508 }
3509 bp = netdev_priv(dev);
3510
3511 rtnl_lock();
3512
3513 pci_save_state(pdev);
3514
3515 if (!netif_running(dev)) {
3516 rtnl_unlock();
3517 return 0;
3518 }
3519
3520 netif_device_detach(dev);
3521
3522 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
3523
3524 bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
3525
3526 rtnl_unlock();
3527
3528 return 0;
3529 }
3530
3531 int bnx2x_resume(struct pci_dev *pdev)
3532 {
3533 struct net_device *dev = pci_get_drvdata(pdev);
3534 struct bnx2x *bp;
3535 int rc;
3536
3537 if (!dev) {
3538 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3539 return -ENODEV;
3540 }
3541 bp = netdev_priv(dev);
3542
3543 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3544 pr_err("Handling parity error recovery. Try again later\n");
3545 return -EAGAIN;
3546 }
3547
3548 rtnl_lock();
3549
3550 pci_restore_state(pdev);
3551
3552 if (!netif_running(dev)) {
3553 rtnl_unlock();
3554 return 0;
3555 }
3556
3557 bnx2x_set_power_state(bp, PCI_D0);
3558 netif_device_attach(dev);
3559
3560 /* Since the chip was reset, clear the FW sequence number */
3561 bp->fw_seq = 0;
3562 rc = bnx2x_nic_load(bp, LOAD_OPEN);
3563
3564 rtnl_unlock();
3565
3566 return rc;
3567 }
3568
3569
3570 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
3571 u32 cid)
3572 {
3573 /* ustorm cxt validation */
3574 cxt->ustorm_ag_context.cdu_usage =
3575 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3576 CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
3577 /* xcontext validation */
3578 cxt->xstorm_ag_context.cdu_reserved =
3579 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3580 CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
3581 }
3582
3583 static inline void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
3584 u8 fw_sb_id, u8 sb_index,
3585 u8 ticks)
3586 {
3587
3588 u32 addr = BAR_CSTRORM_INTMEM +
3589 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
3590 REG_WR8(bp, addr, ticks);
3591 DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d ticks %d\n",
3592 port, fw_sb_id, sb_index, ticks);
3593 }
3594
3595 static inline void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
3596 u16 fw_sb_id, u8 sb_index,
3597 u8 disable)
3598 {
3599 u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
3600 u32 addr = BAR_CSTRORM_INTMEM +
3601 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
3602 u16 flags = REG_RD16(bp, addr);
3603 /* clear and set */
3604 flags &= ~HC_INDEX_DATA_HC_ENABLED;
3605 flags |= enable_flag;
3606 REG_WR16(bp, addr, flags);
3607 DP(NETIF_MSG_HW, "port %x fw_sb_id %d sb_index %d disable %d\n",
3608 port, fw_sb_id, sb_index, disable);
3609 }
3610
3611 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
3612 u8 sb_index, u8 disable, u16 usec)
3613 {
3614 int port = BP_PORT(bp);
3615 u8 ticks = usec / BNX2X_BTR;
3616
3617 storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
3618
3619 disable = disable ? 1 : (usec ? 0 : 1);
3620 storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
3621 }
kernel source for telekom puls (alcatel/mediatek)