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x86: Move call to print_modules() out of show_regs()
[deliverable/linux.git] / drivers / net / ethernet / broadcom / bnx2x / bnx2x_cmn.c
1 /* bnx2x_cmn.c: Broadcom Everest network driver.
2 *
3 * Copyright (c) 2007-2012 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/prefetch.h>
27 #include "bnx2x_cmn.h"
28 #include "bnx2x_init.h"
29 #include "bnx2x_sp.h"
30
31
32
33 /**
34 * bnx2x_move_fp - move content of the fastpath structure.
35 *
36 * @bp: driver handle
37 * @from: source FP index
38 * @to: destination FP index
39 *
40 * Makes sure the contents of the bp->fp[to].napi is kept
41 * intact. This is done by first copying the napi struct from
42 * the target to the source, and then mem copying the entire
43 * source onto the target
44 */
45 static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
46 {
47 struct bnx2x_fastpath *from_fp = &bp->fp[from];
48 struct bnx2x_fastpath *to_fp = &bp->fp[to];
49
50 /* Copy the NAPI object as it has been already initialized */
51 from_fp->napi = to_fp->napi;
52
53 /* Move bnx2x_fastpath contents */
54 memcpy(to_fp, from_fp, sizeof(*to_fp));
55 to_fp->index = to;
56 }
57
58 int load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
59
60 /* free skb in the packet ring at pos idx
61 * return idx of last bd freed
62 */
63 static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
64 u16 idx, unsigned int *pkts_compl,
65 unsigned int *bytes_compl)
66 {
67 struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
68 struct eth_tx_start_bd *tx_start_bd;
69 struct eth_tx_bd *tx_data_bd;
70 struct sk_buff *skb = tx_buf->skb;
71 u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
72 int nbd;
73
74 /* prefetch skb end pointer to speedup dev_kfree_skb() */
75 prefetch(&skb->end);
76
77 DP(NETIF_MSG_TX_DONE, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
78 txdata->txq_index, idx, tx_buf, skb);
79
80 /* unmap first bd */
81 tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
82 dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
83 BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE);
84
85
86 nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
87 #ifdef BNX2X_STOP_ON_ERROR
88 if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
89 BNX2X_ERR("BAD nbd!\n");
90 bnx2x_panic();
91 }
92 #endif
93 new_cons = nbd + tx_buf->first_bd;
94
95 /* Get the next bd */
96 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
97
98 /* Skip a parse bd... */
99 --nbd;
100 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
101
102 /* ...and the TSO split header bd since they have no mapping */
103 if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
104 --nbd;
105 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
106 }
107
108 /* now free frags */
109 while (nbd > 0) {
110
111 tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
112 dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
113 BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
114 if (--nbd)
115 bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
116 }
117
118 /* release skb */
119 WARN_ON(!skb);
120 if (likely(skb)) {
121 (*pkts_compl)++;
122 (*bytes_compl) += skb->len;
123 }
124
125 dev_kfree_skb_any(skb);
126 tx_buf->first_bd = 0;
127 tx_buf->skb = NULL;
128
129 return new_cons;
130 }
131
132 int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
133 {
134 struct netdev_queue *txq;
135 u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
136 unsigned int pkts_compl = 0, bytes_compl = 0;
137
138 #ifdef BNX2X_STOP_ON_ERROR
139 if (unlikely(bp->panic))
140 return -1;
141 #endif
142
143 txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
144 hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
145 sw_cons = txdata->tx_pkt_cons;
146
147 while (sw_cons != hw_cons) {
148 u16 pkt_cons;
149
150 pkt_cons = TX_BD(sw_cons);
151
152 DP(NETIF_MSG_TX_DONE,
153 "queue[%d]: hw_cons %u sw_cons %u pkt_cons %u\n",
154 txdata->txq_index, hw_cons, sw_cons, pkt_cons);
155
156 bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons,
157 &pkts_compl, &bytes_compl);
158
159 sw_cons++;
160 }
161
162 netdev_tx_completed_queue(txq, pkts_compl, bytes_compl);
163
164 txdata->tx_pkt_cons = sw_cons;
165 txdata->tx_bd_cons = bd_cons;
166
167 /* Need to make the tx_bd_cons update visible to start_xmit()
168 * before checking for netif_tx_queue_stopped(). Without the
169 * memory barrier, there is a small possibility that
170 * start_xmit() will miss it and cause the queue to be stopped
171 * forever.
172 * On the other hand we need an rmb() here to ensure the proper
173 * ordering of bit testing in the following
174 * netif_tx_queue_stopped(txq) call.
175 */
176 smp_mb();
177
178 if (unlikely(netif_tx_queue_stopped(txq))) {
179 /* Taking tx_lock() is needed to prevent reenabling the queue
180 * while it's empty. This could have happen if rx_action() gets
181 * suspended in bnx2x_tx_int() after the condition before
182 * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
183 *
184 * stops the queue->sees fresh tx_bd_cons->releases the queue->
185 * sends some packets consuming the whole queue again->
186 * stops the queue
187 */
188
189 __netif_tx_lock(txq, smp_processor_id());
190
191 if ((netif_tx_queue_stopped(txq)) &&
192 (bp->state == BNX2X_STATE_OPEN) &&
193 (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3))
194 netif_tx_wake_queue(txq);
195
196 __netif_tx_unlock(txq);
197 }
198 return 0;
199 }
200
201 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
202 u16 idx)
203 {
204 u16 last_max = fp->last_max_sge;
205
206 if (SUB_S16(idx, last_max) > 0)
207 fp->last_max_sge = idx;
208 }
209
210 static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
211 u16 sge_len,
212 struct eth_end_agg_rx_cqe *cqe)
213 {
214 struct bnx2x *bp = fp->bp;
215 u16 last_max, last_elem, first_elem;
216 u16 delta = 0;
217 u16 i;
218
219 if (!sge_len)
220 return;
221
222 /* First mark all used pages */
223 for (i = 0; i < sge_len; i++)
224 BIT_VEC64_CLEAR_BIT(fp->sge_mask,
225 RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[i])));
226
227 DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
228 sge_len - 1, le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
229
230 /* Here we assume that the last SGE index is the biggest */
231 prefetch((void *)(fp->sge_mask));
232 bnx2x_update_last_max_sge(fp,
233 le16_to_cpu(cqe->sgl_or_raw_data.sgl[sge_len - 1]));
234
235 last_max = RX_SGE(fp->last_max_sge);
236 last_elem = last_max >> BIT_VEC64_ELEM_SHIFT;
237 first_elem = RX_SGE(fp->rx_sge_prod) >> BIT_VEC64_ELEM_SHIFT;
238
239 /* If ring is not full */
240 if (last_elem + 1 != first_elem)
241 last_elem++;
242
243 /* Now update the prod */
244 for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
245 if (likely(fp->sge_mask[i]))
246 break;
247
248 fp->sge_mask[i] = BIT_VEC64_ELEM_ONE_MASK;
249 delta += BIT_VEC64_ELEM_SZ;
250 }
251
252 if (delta > 0) {
253 fp->rx_sge_prod += delta;
254 /* clear page-end entries */
255 bnx2x_clear_sge_mask_next_elems(fp);
256 }
257
258 DP(NETIF_MSG_RX_STATUS,
259 "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
260 fp->last_max_sge, fp->rx_sge_prod);
261 }
262
263 /* Set Toeplitz hash value in the skb using the value from the
264 * CQE (calculated by HW).
265 */
266 static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
267 const struct eth_fast_path_rx_cqe *cqe)
268 {
269 /* Set Toeplitz hash from CQE */
270 if ((bp->dev->features & NETIF_F_RXHASH) &&
271 (cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG))
272 return le32_to_cpu(cqe->rss_hash_result);
273 return 0;
274 }
275
276 static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
277 u16 cons, u16 prod,
278 struct eth_fast_path_rx_cqe *cqe)
279 {
280 struct bnx2x *bp = fp->bp;
281 struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
282 struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
283 struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
284 dma_addr_t mapping;
285 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[queue];
286 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
287
288 /* print error if current state != stop */
289 if (tpa_info->tpa_state != BNX2X_TPA_STOP)
290 BNX2X_ERR("start of bin not in stop [%d]\n", queue);
291
292 /* Try to map an empty data buffer from the aggregation info */
293 mapping = dma_map_single(&bp->pdev->dev,
294 first_buf->data + NET_SKB_PAD,
295 fp->rx_buf_size, DMA_FROM_DEVICE);
296 /*
297 * ...if it fails - move the skb from the consumer to the producer
298 * and set the current aggregation state as ERROR to drop it
299 * when TPA_STOP arrives.
300 */
301
302 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
303 /* Move the BD from the consumer to the producer */
304 bnx2x_reuse_rx_data(fp, cons, prod);
305 tpa_info->tpa_state = BNX2X_TPA_ERROR;
306 return;
307 }
308
309 /* move empty data from pool to prod */
310 prod_rx_buf->data = first_buf->data;
311 dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
312 /* point prod_bd to new data */
313 prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
314 prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
315
316 /* move partial skb from cons to pool (don't unmap yet) */
317 *first_buf = *cons_rx_buf;
318
319 /* mark bin state as START */
320 tpa_info->parsing_flags =
321 le16_to_cpu(cqe->pars_flags.flags);
322 tpa_info->vlan_tag = le16_to_cpu(cqe->vlan_tag);
323 tpa_info->tpa_state = BNX2X_TPA_START;
324 tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
325 tpa_info->placement_offset = cqe->placement_offset;
326 tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe);
327 if (fp->mode == TPA_MODE_GRO) {
328 u16 gro_size = le16_to_cpu(cqe->pkt_len_or_gro_seg_len);
329 tpa_info->full_page =
330 SGE_PAGE_SIZE * PAGES_PER_SGE / gro_size * gro_size;
331 tpa_info->gro_size = gro_size;
332 }
333
334 #ifdef BNX2X_STOP_ON_ERROR
335 fp->tpa_queue_used |= (1 << queue);
336 #ifdef _ASM_GENERIC_INT_L64_H
337 DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n",
338 #else
339 DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
340 #endif
341 fp->tpa_queue_used);
342 #endif
343 }
344
345 /* Timestamp option length allowed for TPA aggregation:
346 *
347 * nop nop kind length echo val
348 */
349 #define TPA_TSTAMP_OPT_LEN 12
350 /**
351 * bnx2x_set_lro_mss - calculate the approximate value of the MSS
352 *
353 * @bp: driver handle
354 * @parsing_flags: parsing flags from the START CQE
355 * @len_on_bd: total length of the first packet for the
356 * aggregation.
357 *
358 * Approximate value of the MSS for this aggregation calculated using
359 * the first packet of it.
360 */
361 static u16 bnx2x_set_lro_mss(struct bnx2x *bp, u16 parsing_flags,
362 u16 len_on_bd)
363 {
364 /*
365 * TPA arrgregation won't have either IP options or TCP options
366 * other than timestamp or IPv6 extension headers.
367 */
368 u16 hdrs_len = ETH_HLEN + sizeof(struct tcphdr);
369
370 if (GET_FLAG(parsing_flags, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
371 PRS_FLAG_OVERETH_IPV6)
372 hdrs_len += sizeof(struct ipv6hdr);
373 else /* IPv4 */
374 hdrs_len += sizeof(struct iphdr);
375
376
377 /* Check if there was a TCP timestamp, if there is it's will
378 * always be 12 bytes length: nop nop kind length echo val.
379 *
380 * Otherwise FW would close the aggregation.
381 */
382 if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
383 hdrs_len += TPA_TSTAMP_OPT_LEN;
384
385 return len_on_bd - hdrs_len;
386 }
387
388 static int bnx2x_alloc_rx_sge(struct bnx2x *bp,
389 struct bnx2x_fastpath *fp, u16 index)
390 {
391 struct page *page = alloc_pages(GFP_ATOMIC, PAGES_PER_SGE_SHIFT);
392 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index];
393 struct eth_rx_sge *sge = &fp->rx_sge_ring[index];
394 dma_addr_t mapping;
395
396 if (unlikely(page == NULL)) {
397 BNX2X_ERR("Can't alloc sge\n");
398 return -ENOMEM;
399 }
400
401 mapping = dma_map_page(&bp->pdev->dev, page, 0,
402 SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE);
403 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
404 __free_pages(page, PAGES_PER_SGE_SHIFT);
405 BNX2X_ERR("Can't map sge\n");
406 return -ENOMEM;
407 }
408
409 sw_buf->page = page;
410 dma_unmap_addr_set(sw_buf, mapping, mapping);
411
412 sge->addr_hi = cpu_to_le32(U64_HI(mapping));
413 sge->addr_lo = cpu_to_le32(U64_LO(mapping));
414
415 return 0;
416 }
417
418 static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
419 struct bnx2x_agg_info *tpa_info,
420 u16 pages,
421 struct sk_buff *skb,
422 struct eth_end_agg_rx_cqe *cqe,
423 u16 cqe_idx)
424 {
425 struct sw_rx_page *rx_pg, old_rx_pg;
426 u32 i, frag_len, frag_size;
427 int err, j, frag_id = 0;
428 u16 len_on_bd = tpa_info->len_on_bd;
429 u16 full_page = 0, gro_size = 0;
430
431 frag_size = le16_to_cpu(cqe->pkt_len) - len_on_bd;
432
433 if (fp->mode == TPA_MODE_GRO) {
434 gro_size = tpa_info->gro_size;
435 full_page = tpa_info->full_page;
436 }
437
438 /* This is needed in order to enable forwarding support */
439 if (frag_size) {
440 skb_shinfo(skb)->gso_size = bnx2x_set_lro_mss(bp,
441 tpa_info->parsing_flags, len_on_bd);
442
443 /* set for GRO */
444 if (fp->mode == TPA_MODE_GRO)
445 skb_shinfo(skb)->gso_type =
446 (GET_FLAG(tpa_info->parsing_flags,
447 PARSING_FLAGS_OVER_ETHERNET_PROTOCOL) ==
448 PRS_FLAG_OVERETH_IPV6) ?
449 SKB_GSO_TCPV6 : SKB_GSO_TCPV4;
450 }
451
452
453 #ifdef BNX2X_STOP_ON_ERROR
454 if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) {
455 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
456 pages, cqe_idx);
457 BNX2X_ERR("cqe->pkt_len = %d\n", cqe->pkt_len);
458 bnx2x_panic();
459 return -EINVAL;
460 }
461 #endif
462
463 /* Run through the SGL and compose the fragmented skb */
464 for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
465 u16 sge_idx = RX_SGE(le16_to_cpu(cqe->sgl_or_raw_data.sgl[j]));
466
467 /* FW gives the indices of the SGE as if the ring is an array
468 (meaning that "next" element will consume 2 indices) */
469 if (fp->mode == TPA_MODE_GRO)
470 frag_len = min_t(u32, frag_size, (u32)full_page);
471 else /* LRO */
472 frag_len = min_t(u32, frag_size,
473 (u32)(SGE_PAGE_SIZE * PAGES_PER_SGE));
474
475 rx_pg = &fp->rx_page_ring[sge_idx];
476 old_rx_pg = *rx_pg;
477
478 /* If we fail to allocate a substitute page, we simply stop
479 where we are and drop the whole packet */
480 err = bnx2x_alloc_rx_sge(bp, fp, sge_idx);
481 if (unlikely(err)) {
482 fp->eth_q_stats.rx_skb_alloc_failed++;
483 return err;
484 }
485
486 /* Unmap the page as we r going to pass it to the stack */
487 dma_unmap_page(&bp->pdev->dev,
488 dma_unmap_addr(&old_rx_pg, mapping),
489 SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE);
490 /* Add one frag and update the appropriate fields in the skb */
491 if (fp->mode == TPA_MODE_LRO)
492 skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len);
493 else { /* GRO */
494 int rem;
495 int offset = 0;
496 for (rem = frag_len; rem > 0; rem -= gro_size) {
497 int len = rem > gro_size ? gro_size : rem;
498 skb_fill_page_desc(skb, frag_id++,
499 old_rx_pg.page, offset, len);
500 if (offset)
501 get_page(old_rx_pg.page);
502 offset += len;
503 }
504 }
505
506 skb->data_len += frag_len;
507 skb->truesize += SGE_PAGE_SIZE * PAGES_PER_SGE;
508 skb->len += frag_len;
509
510 frag_size -= frag_len;
511 }
512
513 return 0;
514 }
515
516 static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
517 struct bnx2x_agg_info *tpa_info,
518 u16 pages,
519 struct eth_end_agg_rx_cqe *cqe,
520 u16 cqe_idx)
521 {
522 struct sw_rx_bd *rx_buf = &tpa_info->first_buf;
523 u8 pad = tpa_info->placement_offset;
524 u16 len = tpa_info->len_on_bd;
525 struct sk_buff *skb = NULL;
526 u8 *new_data, *data = rx_buf->data;
527 u8 old_tpa_state = tpa_info->tpa_state;
528
529 tpa_info->tpa_state = BNX2X_TPA_STOP;
530
531 /* If we there was an error during the handling of the TPA_START -
532 * drop this aggregation.
533 */
534 if (old_tpa_state == BNX2X_TPA_ERROR)
535 goto drop;
536
537 /* Try to allocate the new data */
538 new_data = kmalloc(fp->rx_buf_size + NET_SKB_PAD, GFP_ATOMIC);
539
540 /* Unmap skb in the pool anyway, as we are going to change
541 pool entry status to BNX2X_TPA_STOP even if new skb allocation
542 fails. */
543 dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
544 fp->rx_buf_size, DMA_FROM_DEVICE);
545 if (likely(new_data))
546 skb = build_skb(data, 0);
547
548 if (likely(skb)) {
549 #ifdef BNX2X_STOP_ON_ERROR
550 if (pad + len > fp->rx_buf_size) {
551 BNX2X_ERR("skb_put is about to fail... pad %d len %d rx_buf_size %d\n",
552 pad, len, fp->rx_buf_size);
553 bnx2x_panic();
554 return;
555 }
556 #endif
557
558 skb_reserve(skb, pad + NET_SKB_PAD);
559 skb_put(skb, len);
560 skb->rxhash = tpa_info->rxhash;
561
562 skb->protocol = eth_type_trans(skb, bp->dev);
563 skb->ip_summed = CHECKSUM_UNNECESSARY;
564
565 if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
566 skb, cqe, cqe_idx)) {
567 if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
568 __vlan_hwaccel_put_tag(skb, tpa_info->vlan_tag);
569 napi_gro_receive(&fp->napi, skb);
570 } else {
571 DP(NETIF_MSG_RX_STATUS,
572 "Failed to allocate new pages - dropping packet!\n");
573 dev_kfree_skb_any(skb);
574 }
575
576
577 /* put new data in bin */
578 rx_buf->data = new_data;
579
580 return;
581 }
582 kfree(new_data);
583 drop:
584 /* drop the packet and keep the buffer in the bin */
585 DP(NETIF_MSG_RX_STATUS,
586 "Failed to allocate or map a new skb - dropping packet!\n");
587 fp->eth_q_stats.rx_skb_alloc_failed++;
588 }
589
590 static int bnx2x_alloc_rx_data(struct bnx2x *bp,
591 struct bnx2x_fastpath *fp, u16 index)
592 {
593 u8 *data;
594 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[index];
595 struct eth_rx_bd *rx_bd = &fp->rx_desc_ring[index];
596 dma_addr_t mapping;
597
598 data = kmalloc(fp->rx_buf_size + NET_SKB_PAD, GFP_ATOMIC);
599 if (unlikely(data == NULL))
600 return -ENOMEM;
601
602 mapping = dma_map_single(&bp->pdev->dev, data + NET_SKB_PAD,
603 fp->rx_buf_size,
604 DMA_FROM_DEVICE);
605 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
606 kfree(data);
607 BNX2X_ERR("Can't map rx data\n");
608 return -ENOMEM;
609 }
610
611 rx_buf->data = data;
612 dma_unmap_addr_set(rx_buf, mapping, mapping);
613
614 rx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
615 rx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
616
617 return 0;
618 }
619
620 static void bnx2x_csum_validate(struct sk_buff *skb, union eth_rx_cqe *cqe,
621 struct bnx2x_fastpath *fp)
622 {
623 /* Do nothing if no IP/L4 csum validation was done */
624
625 if (cqe->fast_path_cqe.status_flags &
626 (ETH_FAST_PATH_RX_CQE_IP_XSUM_NO_VALIDATION_FLG |
627 ETH_FAST_PATH_RX_CQE_L4_XSUM_NO_VALIDATION_FLG))
628 return;
629
630 /* If both IP/L4 validation were done, check if an error was found. */
631
632 if (cqe->fast_path_cqe.type_error_flags &
633 (ETH_FAST_PATH_RX_CQE_IP_BAD_XSUM_FLG |
634 ETH_FAST_PATH_RX_CQE_L4_BAD_XSUM_FLG))
635 fp->eth_q_stats.hw_csum_err++;
636 else
637 skb->ip_summed = CHECKSUM_UNNECESSARY;
638 }
639
640 int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
641 {
642 struct bnx2x *bp = fp->bp;
643 u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons;
644 u16 hw_comp_cons, sw_comp_cons, sw_comp_prod;
645 int rx_pkt = 0;
646
647 #ifdef BNX2X_STOP_ON_ERROR
648 if (unlikely(bp->panic))
649 return 0;
650 #endif
651
652 /* CQ "next element" is of the size of the regular element,
653 that's why it's ok here */
654 hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb);
655 if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT)
656 hw_comp_cons++;
657
658 bd_cons = fp->rx_bd_cons;
659 bd_prod = fp->rx_bd_prod;
660 bd_prod_fw = bd_prod;
661 sw_comp_cons = fp->rx_comp_cons;
662 sw_comp_prod = fp->rx_comp_prod;
663
664 /* Memory barrier necessary as speculative reads of the rx
665 * buffer can be ahead of the index in the status block
666 */
667 rmb();
668
669 DP(NETIF_MSG_RX_STATUS,
670 "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n",
671 fp->index, hw_comp_cons, sw_comp_cons);
672
673 while (sw_comp_cons != hw_comp_cons) {
674 struct sw_rx_bd *rx_buf = NULL;
675 struct sk_buff *skb;
676 union eth_rx_cqe *cqe;
677 struct eth_fast_path_rx_cqe *cqe_fp;
678 u8 cqe_fp_flags;
679 enum eth_rx_cqe_type cqe_fp_type;
680 u16 len, pad, queue;
681 u8 *data;
682
683 #ifdef BNX2X_STOP_ON_ERROR
684 if (unlikely(bp->panic))
685 return 0;
686 #endif
687
688 comp_ring_cons = RCQ_BD(sw_comp_cons);
689 bd_prod = RX_BD(bd_prod);
690 bd_cons = RX_BD(bd_cons);
691
692 cqe = &fp->rx_comp_ring[comp_ring_cons];
693 cqe_fp = &cqe->fast_path_cqe;
694 cqe_fp_flags = cqe_fp->type_error_flags;
695 cqe_fp_type = cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE;
696
697 DP(NETIF_MSG_RX_STATUS,
698 "CQE type %x err %x status %x queue %x vlan %x len %u\n",
699 CQE_TYPE(cqe_fp_flags),
700 cqe_fp_flags, cqe_fp->status_flags,
701 le32_to_cpu(cqe_fp->rss_hash_result),
702 le16_to_cpu(cqe_fp->vlan_tag),
703 le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len));
704
705 /* is this a slowpath msg? */
706 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type))) {
707 bnx2x_sp_event(fp, cqe);
708 goto next_cqe;
709 }
710
711 rx_buf = &fp->rx_buf_ring[bd_cons];
712 data = rx_buf->data;
713
714 if (!CQE_TYPE_FAST(cqe_fp_type)) {
715 struct bnx2x_agg_info *tpa_info;
716 u16 frag_size, pages;
717 #ifdef BNX2X_STOP_ON_ERROR
718 /* sanity check */
719 if (fp->disable_tpa &&
720 (CQE_TYPE_START(cqe_fp_type) ||
721 CQE_TYPE_STOP(cqe_fp_type)))
722 BNX2X_ERR("START/STOP packet while disable_tpa type %x\n",
723 CQE_TYPE(cqe_fp_type));
724 #endif
725
726 if (CQE_TYPE_START(cqe_fp_type)) {
727 u16 queue = cqe_fp->queue_index;
728 DP(NETIF_MSG_RX_STATUS,
729 "calling tpa_start on queue %d\n",
730 queue);
731
732 bnx2x_tpa_start(fp, queue,
733 bd_cons, bd_prod,
734 cqe_fp);
735
736 goto next_rx;
737
738 }
739 queue = cqe->end_agg_cqe.queue_index;
740 tpa_info = &fp->tpa_info[queue];
741 DP(NETIF_MSG_RX_STATUS,
742 "calling tpa_stop on queue %d\n",
743 queue);
744
745 frag_size = le16_to_cpu(cqe->end_agg_cqe.pkt_len) -
746 tpa_info->len_on_bd;
747
748 if (fp->mode == TPA_MODE_GRO)
749 pages = (frag_size + tpa_info->full_page - 1) /
750 tpa_info->full_page;
751 else
752 pages = SGE_PAGE_ALIGN(frag_size) >>
753 SGE_PAGE_SHIFT;
754
755 bnx2x_tpa_stop(bp, fp, tpa_info, pages,
756 &cqe->end_agg_cqe, comp_ring_cons);
757 #ifdef BNX2X_STOP_ON_ERROR
758 if (bp->panic)
759 return 0;
760 #endif
761
762 bnx2x_update_sge_prod(fp, pages, &cqe->end_agg_cqe);
763 goto next_cqe;
764 }
765 /* non TPA */
766 len = le16_to_cpu(cqe_fp->pkt_len_or_gro_seg_len);
767 pad = cqe_fp->placement_offset;
768 dma_sync_single_for_cpu(&bp->pdev->dev,
769 dma_unmap_addr(rx_buf, mapping),
770 pad + RX_COPY_THRESH,
771 DMA_FROM_DEVICE);
772 pad += NET_SKB_PAD;
773 prefetch(data + pad); /* speedup eth_type_trans() */
774 /* is this an error packet? */
775 if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) {
776 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
777 "ERROR flags %x rx packet %u\n",
778 cqe_fp_flags, sw_comp_cons);
779 fp->eth_q_stats.rx_err_discard_pkt++;
780 goto reuse_rx;
781 }
782
783 /* Since we don't have a jumbo ring
784 * copy small packets if mtu > 1500
785 */
786 if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) &&
787 (len <= RX_COPY_THRESH)) {
788 skb = netdev_alloc_skb_ip_align(bp->dev, len);
789 if (skb == NULL) {
790 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
791 "ERROR packet dropped because of alloc failure\n");
792 fp->eth_q_stats.rx_skb_alloc_failed++;
793 goto reuse_rx;
794 }
795 memcpy(skb->data, data + pad, len);
796 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
797 } else {
798 if (likely(bnx2x_alloc_rx_data(bp, fp, bd_prod) == 0)) {
799 dma_unmap_single(&bp->pdev->dev,
800 dma_unmap_addr(rx_buf, mapping),
801 fp->rx_buf_size,
802 DMA_FROM_DEVICE);
803 skb = build_skb(data, 0);
804 if (unlikely(!skb)) {
805 kfree(data);
806 fp->eth_q_stats.rx_skb_alloc_failed++;
807 goto next_rx;
808 }
809 skb_reserve(skb, pad);
810 } else {
811 DP(NETIF_MSG_RX_ERR | NETIF_MSG_RX_STATUS,
812 "ERROR packet dropped because of alloc failure\n");
813 fp->eth_q_stats.rx_skb_alloc_failed++;
814 reuse_rx:
815 bnx2x_reuse_rx_data(fp, bd_cons, bd_prod);
816 goto next_rx;
817 }
818 }
819
820 skb_put(skb, len);
821 skb->protocol = eth_type_trans(skb, bp->dev);
822
823 /* Set Toeplitz hash for a none-LRO skb */
824 skb->rxhash = bnx2x_get_rxhash(bp, cqe_fp);
825
826 skb_checksum_none_assert(skb);
827
828 if (bp->dev->features & NETIF_F_RXCSUM)
829 bnx2x_csum_validate(skb, cqe, fp);
830
831
832 skb_record_rx_queue(skb, fp->rx_queue);
833
834 if (le16_to_cpu(cqe_fp->pars_flags.flags) &
835 PARSING_FLAGS_VLAN)
836 __vlan_hwaccel_put_tag(skb,
837 le16_to_cpu(cqe_fp->vlan_tag));
838 napi_gro_receive(&fp->napi, skb);
839
840
841 next_rx:
842 rx_buf->data = NULL;
843
844 bd_cons = NEXT_RX_IDX(bd_cons);
845 bd_prod = NEXT_RX_IDX(bd_prod);
846 bd_prod_fw = NEXT_RX_IDX(bd_prod_fw);
847 rx_pkt++;
848 next_cqe:
849 sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod);
850 sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons);
851
852 if (rx_pkt == budget)
853 break;
854 } /* while */
855
856 fp->rx_bd_cons = bd_cons;
857 fp->rx_bd_prod = bd_prod_fw;
858 fp->rx_comp_cons = sw_comp_cons;
859 fp->rx_comp_prod = sw_comp_prod;
860
861 /* Update producers */
862 bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod,
863 fp->rx_sge_prod);
864
865 fp->rx_pkt += rx_pkt;
866 fp->rx_calls++;
867
868 return rx_pkt;
869 }
870
871 static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
872 {
873 struct bnx2x_fastpath *fp = fp_cookie;
874 struct bnx2x *bp = fp->bp;
875 u8 cos;
876
877 DP(NETIF_MSG_INTR,
878 "got an MSI-X interrupt on IDX:SB [fp %d fw_sd %d igusb %d]\n",
879 fp->index, fp->fw_sb_id, fp->igu_sb_id);
880 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0);
881
882 #ifdef BNX2X_STOP_ON_ERROR
883 if (unlikely(bp->panic))
884 return IRQ_HANDLED;
885 #endif
886
887 /* Handle Rx and Tx according to MSI-X vector */
888 prefetch(fp->rx_cons_sb);
889
890 for_each_cos_in_tx_queue(fp, cos)
891 prefetch(fp->txdata[cos].tx_cons_sb);
892
893 prefetch(&fp->sb_running_index[SM_RX_ID]);
894 napi_schedule(&bnx2x_fp(bp, fp->index, napi));
895
896 return IRQ_HANDLED;
897 }
898
899 /* HW Lock for shared dual port PHYs */
900 void bnx2x_acquire_phy_lock(struct bnx2x *bp)
901 {
902 mutex_lock(&bp->port.phy_mutex);
903
904 if (bp->port.need_hw_lock)
905 bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
906 }
907
908 void bnx2x_release_phy_lock(struct bnx2x *bp)
909 {
910 if (bp->port.need_hw_lock)
911 bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO);
912
913 mutex_unlock(&bp->port.phy_mutex);
914 }
915
916 /* calculates MF speed according to current linespeed and MF configuration */
917 u16 bnx2x_get_mf_speed(struct bnx2x *bp)
918 {
919 u16 line_speed = bp->link_vars.line_speed;
920 if (IS_MF(bp)) {
921 u16 maxCfg = bnx2x_extract_max_cfg(bp,
922 bp->mf_config[BP_VN(bp)]);
923
924 /* Calculate the current MAX line speed limit for the MF
925 * devices
926 */
927 if (IS_MF_SI(bp))
928 line_speed = (line_speed * maxCfg) / 100;
929 else { /* SD mode */
930 u16 vn_max_rate = maxCfg * 100;
931
932 if (vn_max_rate < line_speed)
933 line_speed = vn_max_rate;
934 }
935 }
936
937 return line_speed;
938 }
939
940 /**
941 * bnx2x_fill_report_data - fill link report data to report
942 *
943 * @bp: driver handle
944 * @data: link state to update
945 *
946 * It uses a none-atomic bit operations because is called under the mutex.
947 */
948 static void bnx2x_fill_report_data(struct bnx2x *bp,
949 struct bnx2x_link_report_data *data)
950 {
951 u16 line_speed = bnx2x_get_mf_speed(bp);
952
953 memset(data, 0, sizeof(*data));
954
955 /* Fill the report data: efective line speed */
956 data->line_speed = line_speed;
957
958 /* Link is down */
959 if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS))
960 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
961 &data->link_report_flags);
962
963 /* Full DUPLEX */
964 if (bp->link_vars.duplex == DUPLEX_FULL)
965 __set_bit(BNX2X_LINK_REPORT_FD, &data->link_report_flags);
966
967 /* Rx Flow Control is ON */
968 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX)
969 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON, &data->link_report_flags);
970
971 /* Tx Flow Control is ON */
972 if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX)
973 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON, &data->link_report_flags);
974 }
975
976 /**
977 * bnx2x_link_report - report link status to OS.
978 *
979 * @bp: driver handle
980 *
981 * Calls the __bnx2x_link_report() under the same locking scheme
982 * as a link/PHY state managing code to ensure a consistent link
983 * reporting.
984 */
985
986 void bnx2x_link_report(struct bnx2x *bp)
987 {
988 bnx2x_acquire_phy_lock(bp);
989 __bnx2x_link_report(bp);
990 bnx2x_release_phy_lock(bp);
991 }
992
993 /**
994 * __bnx2x_link_report - report link status to OS.
995 *
996 * @bp: driver handle
997 *
998 * None atomic inmlementation.
999 * Should be called under the phy_lock.
1000 */
1001 void __bnx2x_link_report(struct bnx2x *bp)
1002 {
1003 struct bnx2x_link_report_data cur_data;
1004
1005 /* reread mf_cfg */
1006 if (!CHIP_IS_E1(bp))
1007 bnx2x_read_mf_cfg(bp);
1008
1009 /* Read the current link report info */
1010 bnx2x_fill_report_data(bp, &cur_data);
1011
1012 /* Don't report link down or exactly the same link status twice */
1013 if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) ||
1014 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1015 &bp->last_reported_link.link_report_flags) &&
1016 test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1017 &cur_data.link_report_flags)))
1018 return;
1019
1020 bp->link_cnt++;
1021
1022 /* We are going to report a new link parameters now -
1023 * remember the current data for the next time.
1024 */
1025 memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data));
1026
1027 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1028 &cur_data.link_report_flags)) {
1029 netif_carrier_off(bp->dev);
1030 netdev_err(bp->dev, "NIC Link is Down\n");
1031 return;
1032 } else {
1033 const char *duplex;
1034 const char *flow;
1035
1036 netif_carrier_on(bp->dev);
1037
1038 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD,
1039 &cur_data.link_report_flags))
1040 duplex = "full";
1041 else
1042 duplex = "half";
1043
1044 /* Handle the FC at the end so that only these flags would be
1045 * possibly set. This way we may easily check if there is no FC
1046 * enabled.
1047 */
1048 if (cur_data.link_report_flags) {
1049 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
1050 &cur_data.link_report_flags)) {
1051 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
1052 &cur_data.link_report_flags))
1053 flow = "ON - receive & transmit";
1054 else
1055 flow = "ON - receive";
1056 } else {
1057 flow = "ON - transmit";
1058 }
1059 } else {
1060 flow = "none";
1061 }
1062 netdev_info(bp->dev, "NIC Link is Up, %d Mbps %s duplex, Flow control: %s\n",
1063 cur_data.line_speed, duplex, flow);
1064 }
1065 }
1066
1067 static void bnx2x_set_next_page_sgl(struct bnx2x_fastpath *fp)
1068 {
1069 int i;
1070
1071 for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
1072 struct eth_rx_sge *sge;
1073
1074 sge = &fp->rx_sge_ring[RX_SGE_CNT * i - 2];
1075 sge->addr_hi =
1076 cpu_to_le32(U64_HI(fp->rx_sge_mapping +
1077 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1078
1079 sge->addr_lo =
1080 cpu_to_le32(U64_LO(fp->rx_sge_mapping +
1081 BCM_PAGE_SIZE*(i % NUM_RX_SGE_PAGES)));
1082 }
1083 }
1084
1085 static void bnx2x_free_tpa_pool(struct bnx2x *bp,
1086 struct bnx2x_fastpath *fp, int last)
1087 {
1088 int i;
1089
1090 for (i = 0; i < last; i++) {
1091 struct bnx2x_agg_info *tpa_info = &fp->tpa_info[i];
1092 struct sw_rx_bd *first_buf = &tpa_info->first_buf;
1093 u8 *data = first_buf->data;
1094
1095 if (data == NULL) {
1096 DP(NETIF_MSG_IFDOWN, "tpa bin %d empty on free\n", i);
1097 continue;
1098 }
1099 if (tpa_info->tpa_state == BNX2X_TPA_START)
1100 dma_unmap_single(&bp->pdev->dev,
1101 dma_unmap_addr(first_buf, mapping),
1102 fp->rx_buf_size, DMA_FROM_DEVICE);
1103 kfree(data);
1104 first_buf->data = NULL;
1105 }
1106 }
1107
1108 void bnx2x_init_rx_rings(struct bnx2x *bp)
1109 {
1110 int func = BP_FUNC(bp);
1111 u16 ring_prod;
1112 int i, j;
1113
1114 /* Allocate TPA resources */
1115 for_each_rx_queue(bp, j) {
1116 struct bnx2x_fastpath *fp = &bp->fp[j];
1117
1118 DP(NETIF_MSG_IFUP,
1119 "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size);
1120
1121 if (!fp->disable_tpa) {
1122 /* Fill the per-aggregtion pool */
1123 for (i = 0; i < MAX_AGG_QS(bp); i++) {
1124 struct bnx2x_agg_info *tpa_info =
1125 &fp->tpa_info[i];
1126 struct sw_rx_bd *first_buf =
1127 &tpa_info->first_buf;
1128
1129 first_buf->data = kmalloc(fp->rx_buf_size + NET_SKB_PAD,
1130 GFP_ATOMIC);
1131 if (!first_buf->data) {
1132 BNX2X_ERR("Failed to allocate TPA skb pool for queue[%d] - disabling TPA on this queue!\n",
1133 j);
1134 bnx2x_free_tpa_pool(bp, fp, i);
1135 fp->disable_tpa = 1;
1136 break;
1137 }
1138 dma_unmap_addr_set(first_buf, mapping, 0);
1139 tpa_info->tpa_state = BNX2X_TPA_STOP;
1140 }
1141
1142 /* "next page" elements initialization */
1143 bnx2x_set_next_page_sgl(fp);
1144
1145 /* set SGEs bit mask */
1146 bnx2x_init_sge_ring_bit_mask(fp);
1147
1148 /* Allocate SGEs and initialize the ring elements */
1149 for (i = 0, ring_prod = 0;
1150 i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) {
1151
1152 if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) {
1153 BNX2X_ERR("was only able to allocate %d rx sges\n",
1154 i);
1155 BNX2X_ERR("disabling TPA for queue[%d]\n",
1156 j);
1157 /* Cleanup already allocated elements */
1158 bnx2x_free_rx_sge_range(bp, fp,
1159 ring_prod);
1160 bnx2x_free_tpa_pool(bp, fp,
1161 MAX_AGG_QS(bp));
1162 fp->disable_tpa = 1;
1163 ring_prod = 0;
1164 break;
1165 }
1166 ring_prod = NEXT_SGE_IDX(ring_prod);
1167 }
1168
1169 fp->rx_sge_prod = ring_prod;
1170 }
1171 }
1172
1173 for_each_rx_queue(bp, j) {
1174 struct bnx2x_fastpath *fp = &bp->fp[j];
1175
1176 fp->rx_bd_cons = 0;
1177
1178 /* Activate BD ring */
1179 /* Warning!
1180 * this will generate an interrupt (to the TSTORM)
1181 * must only be done after chip is initialized
1182 */
1183 bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod,
1184 fp->rx_sge_prod);
1185
1186 if (j != 0)
1187 continue;
1188
1189 if (CHIP_IS_E1(bp)) {
1190 REG_WR(bp, BAR_USTRORM_INTMEM +
1191 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func),
1192 U64_LO(fp->rx_comp_mapping));
1193 REG_WR(bp, BAR_USTRORM_INTMEM +
1194 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4,
1195 U64_HI(fp->rx_comp_mapping));
1196 }
1197 }
1198 }
1199
1200 static void bnx2x_free_tx_skbs(struct bnx2x *bp)
1201 {
1202 int i;
1203 u8 cos;
1204
1205 for_each_tx_queue(bp, i) {
1206 struct bnx2x_fastpath *fp = &bp->fp[i];
1207 for_each_cos_in_tx_queue(fp, cos) {
1208 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
1209 unsigned pkts_compl = 0, bytes_compl = 0;
1210
1211 u16 sw_prod = txdata->tx_pkt_prod;
1212 u16 sw_cons = txdata->tx_pkt_cons;
1213
1214 while (sw_cons != sw_prod) {
1215 bnx2x_free_tx_pkt(bp, txdata, TX_BD(sw_cons),
1216 &pkts_compl, &bytes_compl);
1217 sw_cons++;
1218 }
1219 netdev_tx_reset_queue(
1220 netdev_get_tx_queue(bp->dev, txdata->txq_index));
1221 }
1222 }
1223 }
1224
1225 static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp)
1226 {
1227 struct bnx2x *bp = fp->bp;
1228 int i;
1229
1230 /* ring wasn't allocated */
1231 if (fp->rx_buf_ring == NULL)
1232 return;
1233
1234 for (i = 0; i < NUM_RX_BD; i++) {
1235 struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i];
1236 u8 *data = rx_buf->data;
1237
1238 if (data == NULL)
1239 continue;
1240 dma_unmap_single(&bp->pdev->dev,
1241 dma_unmap_addr(rx_buf, mapping),
1242 fp->rx_buf_size, DMA_FROM_DEVICE);
1243
1244 rx_buf->data = NULL;
1245 kfree(data);
1246 }
1247 }
1248
1249 static void bnx2x_free_rx_skbs(struct bnx2x *bp)
1250 {
1251 int j;
1252
1253 for_each_rx_queue(bp, j) {
1254 struct bnx2x_fastpath *fp = &bp->fp[j];
1255
1256 bnx2x_free_rx_bds(fp);
1257
1258 if (!fp->disable_tpa)
1259 bnx2x_free_tpa_pool(bp, fp, MAX_AGG_QS(bp));
1260 }
1261 }
1262
1263 void bnx2x_free_skbs(struct bnx2x *bp)
1264 {
1265 bnx2x_free_tx_skbs(bp);
1266 bnx2x_free_rx_skbs(bp);
1267 }
1268
1269 void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
1270 {
1271 /* load old values */
1272 u32 mf_cfg = bp->mf_config[BP_VN(bp)];
1273
1274 if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
1275 /* leave all but MAX value */
1276 mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
1277
1278 /* set new MAX value */
1279 mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
1280 & FUNC_MF_CFG_MAX_BW_MASK;
1281
1282 bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
1283 }
1284 }
1285
1286 /**
1287 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1288 *
1289 * @bp: driver handle
1290 * @nvecs: number of vectors to be released
1291 */
1292 static void bnx2x_free_msix_irqs(struct bnx2x *bp, int nvecs)
1293 {
1294 int i, offset = 0;
1295
1296 if (nvecs == offset)
1297 return;
1298 free_irq(bp->msix_table[offset].vector, bp->dev);
1299 DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n",
1300 bp->msix_table[offset].vector);
1301 offset++;
1302 #ifdef BCM_CNIC
1303 if (nvecs == offset)
1304 return;
1305 offset++;
1306 #endif
1307
1308 for_each_eth_queue(bp, i) {
1309 if (nvecs == offset)
1310 return;
1311 DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq\n",
1312 i, bp->msix_table[offset].vector);
1313
1314 free_irq(bp->msix_table[offset++].vector, &bp->fp[i]);
1315 }
1316 }
1317
1318 void bnx2x_free_irq(struct bnx2x *bp)
1319 {
1320 if (bp->flags & USING_MSIX_FLAG &&
1321 !(bp->flags & USING_SINGLE_MSIX_FLAG))
1322 bnx2x_free_msix_irqs(bp, BNX2X_NUM_ETH_QUEUES(bp) +
1323 CNIC_PRESENT + 1);
1324 else
1325 free_irq(bp->dev->irq, bp->dev);
1326 }
1327
1328 int __devinit bnx2x_enable_msix(struct bnx2x *bp)
1329 {
1330 int msix_vec = 0, i, rc, req_cnt;
1331
1332 bp->msix_table[msix_vec].entry = msix_vec;
1333 BNX2X_DEV_INFO("msix_table[0].entry = %d (slowpath)\n",
1334 bp->msix_table[0].entry);
1335 msix_vec++;
1336
1337 #ifdef BCM_CNIC
1338 bp->msix_table[msix_vec].entry = msix_vec;
1339 BNX2X_DEV_INFO("msix_table[%d].entry = %d (CNIC)\n",
1340 bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
1341 msix_vec++;
1342 #endif
1343 /* We need separate vectors for ETH queues only (not FCoE) */
1344 for_each_eth_queue(bp, i) {
1345 bp->msix_table[msix_vec].entry = msix_vec;
1346 BNX2X_DEV_INFO("msix_table[%d].entry = %d (fastpath #%u)\n",
1347 msix_vec, msix_vec, i);
1348 msix_vec++;
1349 }
1350
1351 req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_PRESENT + 1;
1352
1353 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
1354
1355 /*
1356 * reconfigure number of tx/rx queues according to available
1357 * MSI-X vectors
1358 */
1359 if (rc >= BNX2X_MIN_MSIX_VEC_CNT) {
1360 /* how less vectors we will have? */
1361 int diff = req_cnt - rc;
1362
1363 BNX2X_DEV_INFO("Trying to use less MSI-X vectors: %d\n", rc);
1364
1365 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc);
1366
1367 if (rc) {
1368 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1369 goto no_msix;
1370 }
1371 /*
1372 * decrease number of queues by number of unallocated entries
1373 */
1374 bp->num_queues -= diff;
1375
1376 BNX2X_DEV_INFO("New queue configuration set: %d\n",
1377 bp->num_queues);
1378 } else if (rc > 0) {
1379 /* Get by with single vector */
1380 rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], 1);
1381 if (rc) {
1382 BNX2X_DEV_INFO("Single MSI-X is not attainable rc %d\n",
1383 rc);
1384 goto no_msix;
1385 }
1386
1387 BNX2X_DEV_INFO("Using single MSI-X vector\n");
1388 bp->flags |= USING_SINGLE_MSIX_FLAG;
1389
1390 } else if (rc < 0) {
1391 BNX2X_DEV_INFO("MSI-X is not attainable rc %d\n", rc);
1392 goto no_msix;
1393 }
1394
1395 bp->flags |= USING_MSIX_FLAG;
1396
1397 return 0;
1398
1399 no_msix:
1400 /* fall to INTx if not enough memory */
1401 if (rc == -ENOMEM)
1402 bp->flags |= DISABLE_MSI_FLAG;
1403
1404 return rc;
1405 }
1406
1407 static int bnx2x_req_msix_irqs(struct bnx2x *bp)
1408 {
1409 int i, rc, offset = 0;
1410
1411 rc = request_irq(bp->msix_table[offset++].vector,
1412 bnx2x_msix_sp_int, 0,
1413 bp->dev->name, bp->dev);
1414 if (rc) {
1415 BNX2X_ERR("request sp irq failed\n");
1416 return -EBUSY;
1417 }
1418
1419 #ifdef BCM_CNIC
1420 offset++;
1421 #endif
1422 for_each_eth_queue(bp, i) {
1423 struct bnx2x_fastpath *fp = &bp->fp[i];
1424 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1425 bp->dev->name, i);
1426
1427 rc = request_irq(bp->msix_table[offset].vector,
1428 bnx2x_msix_fp_int, 0, fp->name, fp);
1429 if (rc) {
1430 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i,
1431 bp->msix_table[offset].vector, rc);
1432 bnx2x_free_msix_irqs(bp, offset);
1433 return -EBUSY;
1434 }
1435
1436 offset++;
1437 }
1438
1439 i = BNX2X_NUM_ETH_QUEUES(bp);
1440 offset = 1 + CNIC_PRESENT;
1441 netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d ... fp[%d] %d\n",
1442 bp->msix_table[0].vector,
1443 0, bp->msix_table[offset].vector,
1444 i - 1, bp->msix_table[offset + i - 1].vector);
1445
1446 return 0;
1447 }
1448
1449 int bnx2x_enable_msi(struct bnx2x *bp)
1450 {
1451 int rc;
1452
1453 rc = pci_enable_msi(bp->pdev);
1454 if (rc) {
1455 BNX2X_DEV_INFO("MSI is not attainable\n");
1456 return -1;
1457 }
1458 bp->flags |= USING_MSI_FLAG;
1459
1460 return 0;
1461 }
1462
1463 static int bnx2x_req_irq(struct bnx2x *bp)
1464 {
1465 unsigned long flags;
1466 unsigned int irq;
1467
1468 if (bp->flags & (USING_MSI_FLAG | USING_MSIX_FLAG))
1469 flags = 0;
1470 else
1471 flags = IRQF_SHARED;
1472
1473 if (bp->flags & USING_MSIX_FLAG)
1474 irq = bp->msix_table[0].vector;
1475 else
1476 irq = bp->pdev->irq;
1477
1478 return request_irq(irq, bnx2x_interrupt, flags, bp->dev->name, bp->dev);
1479 }
1480
1481 static int bnx2x_setup_irqs(struct bnx2x *bp)
1482 {
1483 int rc = 0;
1484 if (bp->flags & USING_MSIX_FLAG &&
1485 !(bp->flags & USING_SINGLE_MSIX_FLAG)) {
1486 rc = bnx2x_req_msix_irqs(bp);
1487 if (rc)
1488 return rc;
1489 } else {
1490 bnx2x_ack_int(bp);
1491 rc = bnx2x_req_irq(bp);
1492 if (rc) {
1493 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc);
1494 return rc;
1495 }
1496 if (bp->flags & USING_MSI_FLAG) {
1497 bp->dev->irq = bp->pdev->irq;
1498 netdev_info(bp->dev, "using MSI IRQ %d\n",
1499 bp->dev->irq);
1500 }
1501 if (bp->flags & USING_MSIX_FLAG) {
1502 bp->dev->irq = bp->msix_table[0].vector;
1503 netdev_info(bp->dev, "using MSIX IRQ %d\n",
1504 bp->dev->irq);
1505 }
1506 }
1507
1508 return 0;
1509 }
1510
1511 static void bnx2x_napi_enable(struct bnx2x *bp)
1512 {
1513 int i;
1514
1515 for_each_rx_queue(bp, i)
1516 napi_enable(&bnx2x_fp(bp, i, napi));
1517 }
1518
1519 static void bnx2x_napi_disable(struct bnx2x *bp)
1520 {
1521 int i;
1522
1523 for_each_rx_queue(bp, i)
1524 napi_disable(&bnx2x_fp(bp, i, napi));
1525 }
1526
1527 void bnx2x_netif_start(struct bnx2x *bp)
1528 {
1529 if (netif_running(bp->dev)) {
1530 bnx2x_napi_enable(bp);
1531 bnx2x_int_enable(bp);
1532 if (bp->state == BNX2X_STATE_OPEN)
1533 netif_tx_wake_all_queues(bp->dev);
1534 }
1535 }
1536
1537 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw)
1538 {
1539 bnx2x_int_disable_sync(bp, disable_hw);
1540 bnx2x_napi_disable(bp);
1541 }
1542
1543 u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
1544 {
1545 struct bnx2x *bp = netdev_priv(dev);
1546
1547 #ifdef BCM_CNIC
1548 if (!NO_FCOE(bp)) {
1549 struct ethhdr *hdr = (struct ethhdr *)skb->data;
1550 u16 ether_type = ntohs(hdr->h_proto);
1551
1552 /* Skip VLAN tag if present */
1553 if (ether_type == ETH_P_8021Q) {
1554 struct vlan_ethhdr *vhdr =
1555 (struct vlan_ethhdr *)skb->data;
1556
1557 ether_type = ntohs(vhdr->h_vlan_encapsulated_proto);
1558 }
1559
1560 /* If ethertype is FCoE or FIP - use FCoE ring */
1561 if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
1562 return bnx2x_fcoe_tx(bp, txq_index);
1563 }
1564 #endif
1565 /* select a non-FCoE queue */
1566 return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
1567 }
1568
1569
1570 void bnx2x_set_num_queues(struct bnx2x *bp)
1571 {
1572 /* RSS queues */
1573 bp->num_queues = bnx2x_calc_num_queues(bp);
1574
1575 #ifdef BCM_CNIC
1576 /* override in STORAGE SD modes */
1577 if (IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp))
1578 bp->num_queues = 1;
1579 #endif
1580 /* Add special queues */
1581 bp->num_queues += NON_ETH_CONTEXT_USE;
1582 }
1583
1584 /**
1585 * bnx2x_set_real_num_queues - configure netdev->real_num_[tx,rx]_queues
1586 *
1587 * @bp: Driver handle
1588 *
1589 * We currently support for at most 16 Tx queues for each CoS thus we will
1590 * allocate a multiple of 16 for ETH L2 rings according to the value of the
1591 * bp->max_cos.
1592 *
1593 * If there is an FCoE L2 queue the appropriate Tx queue will have the next
1594 * index after all ETH L2 indices.
1595 *
1596 * If the actual number of Tx queues (for each CoS) is less than 16 then there
1597 * will be the holes at the end of each group of 16 ETh L2 indices (0..15,
1598 * 16..31,...) with indicies that are not coupled with any real Tx queue.
1599 *
1600 * The proper configuration of skb->queue_mapping is handled by
1601 * bnx2x_select_queue() and __skb_tx_hash().
1602 *
1603 * bnx2x_setup_tc() takes care of the proper TC mappings so that __skb_tx_hash()
1604 * will return a proper Tx index if TC is enabled (netdev->num_tc > 0).
1605 */
1606 static int bnx2x_set_real_num_queues(struct bnx2x *bp)
1607 {
1608 int rc, tx, rx;
1609
1610 tx = MAX_TXQS_PER_COS * bp->max_cos;
1611 rx = BNX2X_NUM_ETH_QUEUES(bp);
1612
1613 /* account for fcoe queue */
1614 #ifdef BCM_CNIC
1615 if (!NO_FCOE(bp)) {
1616 rx += FCOE_PRESENT;
1617 tx += FCOE_PRESENT;
1618 }
1619 #endif
1620
1621 rc = netif_set_real_num_tx_queues(bp->dev, tx);
1622 if (rc) {
1623 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
1624 return rc;
1625 }
1626 rc = netif_set_real_num_rx_queues(bp->dev, rx);
1627 if (rc) {
1628 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
1629 return rc;
1630 }
1631
1632 DP(NETIF_MSG_IFUP, "Setting real num queues to (tx, rx) (%d, %d)\n",
1633 tx, rx);
1634
1635 return rc;
1636 }
1637
1638 static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
1639 {
1640 int i;
1641
1642 for_each_queue(bp, i) {
1643 struct bnx2x_fastpath *fp = &bp->fp[i];
1644 u32 mtu;
1645
1646 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
1647 if (IS_FCOE_IDX(i))
1648 /*
1649 * Although there are no IP frames expected to arrive to
1650 * this ring we still want to add an
1651 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
1652 * overrun attack.
1653 */
1654 mtu = BNX2X_FCOE_MINI_JUMBO_MTU;
1655 else
1656 mtu = bp->dev->mtu;
1657 fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START +
1658 IP_HEADER_ALIGNMENT_PADDING +
1659 ETH_OVREHEAD +
1660 mtu +
1661 BNX2X_FW_RX_ALIGN_END;
1662 /* Note : rx_buf_size doesnt take into account NET_SKB_PAD */
1663 }
1664 }
1665
1666 static int bnx2x_init_rss_pf(struct bnx2x *bp)
1667 {
1668 int i;
1669 u8 ind_table[T_ETH_INDIRECTION_TABLE_SIZE] = {0};
1670 u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
1671
1672 /* Prepare the initial contents fo the indirection table if RSS is
1673 * enabled
1674 */
1675 for (i = 0; i < sizeof(ind_table); i++)
1676 ind_table[i] =
1677 bp->fp->cl_id +
1678 ethtool_rxfh_indir_default(i, num_eth_queues);
1679
1680 /*
1681 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
1682 * per-port, so if explicit configuration is needed , do it only
1683 * for a PMF.
1684 *
1685 * For 57712 and newer on the other hand it's a per-function
1686 * configuration.
1687 */
1688 return bnx2x_config_rss_eth(bp, ind_table,
1689 bp->port.pmf || !CHIP_IS_E1x(bp));
1690 }
1691
1692 int bnx2x_config_rss_pf(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
1693 u8 *ind_table, bool config_hash)
1694 {
1695 struct bnx2x_config_rss_params params = {NULL};
1696 int i;
1697
1698 /* Although RSS is meaningless when there is a single HW queue we
1699 * still need it enabled in order to have HW Rx hash generated.
1700 *
1701 * if (!is_eth_multi(bp))
1702 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
1703 */
1704
1705 params.rss_obj = rss_obj;
1706
1707 __set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
1708
1709 __set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
1710
1711 /* RSS configuration */
1712 __set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
1713 __set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
1714 __set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
1715 __set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
1716
1717 /* Hash bits */
1718 params.rss_result_mask = MULTI_MASK;
1719
1720 memcpy(params.ind_table, ind_table, sizeof(params.ind_table));
1721
1722 if (config_hash) {
1723 /* RSS keys */
1724 for (i = 0; i < sizeof(params.rss_key) / 4; i++)
1725 params.rss_key[i] = random32();
1726
1727 __set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
1728 }
1729
1730 return bnx2x_config_rss(bp, &params);
1731 }
1732
1733 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
1734 {
1735 struct bnx2x_func_state_params func_params = {NULL};
1736
1737 /* Prepare parameters for function state transitions */
1738 __set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
1739
1740 func_params.f_obj = &bp->func_obj;
1741 func_params.cmd = BNX2X_F_CMD_HW_INIT;
1742
1743 func_params.params.hw_init.load_phase = load_code;
1744
1745 return bnx2x_func_state_change(bp, &func_params);
1746 }
1747
1748 /*
1749 * Cleans the object that have internal lists without sending
1750 * ramrods. Should be run when interrutps are disabled.
1751 */
1752 static void bnx2x_squeeze_objects(struct bnx2x *bp)
1753 {
1754 int rc;
1755 unsigned long ramrod_flags = 0, vlan_mac_flags = 0;
1756 struct bnx2x_mcast_ramrod_params rparam = {NULL};
1757 struct bnx2x_vlan_mac_obj *mac_obj = &bp->fp->mac_obj;
1758
1759 /***************** Cleanup MACs' object first *************************/
1760
1761 /* Wait for completion of requested */
1762 __set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
1763 /* Perform a dry cleanup */
1764 __set_bit(RAMROD_DRV_CLR_ONLY, &ramrod_flags);
1765
1766 /* Clean ETH primary MAC */
1767 __set_bit(BNX2X_ETH_MAC, &vlan_mac_flags);
1768 rc = mac_obj->delete_all(bp, &bp->fp->mac_obj, &vlan_mac_flags,
1769 &ramrod_flags);
1770 if (rc != 0)
1771 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc);
1772
1773 /* Cleanup UC list */
1774 vlan_mac_flags = 0;
1775 __set_bit(BNX2X_UC_LIST_MAC, &vlan_mac_flags);
1776 rc = mac_obj->delete_all(bp, mac_obj, &vlan_mac_flags,
1777 &ramrod_flags);
1778 if (rc != 0)
1779 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc);
1780
1781 /***************** Now clean mcast object *****************************/
1782 rparam.mcast_obj = &bp->mcast_obj;
1783 __set_bit(RAMROD_DRV_CLR_ONLY, &rparam.ramrod_flags);
1784
1785 /* Add a DEL command... */
1786 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_DEL);
1787 if (rc < 0)
1788 BNX2X_ERR("Failed to add a new DEL command to a multi-cast object: %d\n",
1789 rc);
1790
1791 /* ...and wait until all pending commands are cleared */
1792 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1793 while (rc != 0) {
1794 if (rc < 0) {
1795 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
1796 rc);
1797 return;
1798 }
1799
1800 rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
1801 }
1802 }
1803
1804 #ifndef BNX2X_STOP_ON_ERROR
1805 #define LOAD_ERROR_EXIT(bp, label) \
1806 do { \
1807 (bp)->state = BNX2X_STATE_ERROR; \
1808 goto label; \
1809 } while (0)
1810 #else
1811 #define LOAD_ERROR_EXIT(bp, label) \
1812 do { \
1813 (bp)->state = BNX2X_STATE_ERROR; \
1814 (bp)->panic = 1; \
1815 return -EBUSY; \
1816 } while (0)
1817 #endif
1818
1819 bool bnx2x_test_firmware_version(struct bnx2x *bp, bool is_err)
1820 {
1821 /* build FW version dword */
1822 u32 my_fw = (BCM_5710_FW_MAJOR_VERSION) +
1823 (BCM_5710_FW_MINOR_VERSION << 8) +
1824 (BCM_5710_FW_REVISION_VERSION << 16) +
1825 (BCM_5710_FW_ENGINEERING_VERSION << 24);
1826
1827 /* read loaded FW from chip */
1828 u32 loaded_fw = REG_RD(bp, XSEM_REG_PRAM);
1829
1830 DP(NETIF_MSG_IFUP, "loaded fw %x, my fw %x\n", loaded_fw, my_fw);
1831
1832 if (loaded_fw != my_fw) {
1833 if (is_err)
1834 BNX2X_ERR("bnx2x with FW %x was already loaded, which mismatches my %x FW. aborting\n",
1835 loaded_fw, my_fw);
1836 return false;
1837 }
1838
1839 return true;
1840 }
1841
1842 /**
1843 * bnx2x_bz_fp - zero content of the fastpath structure.
1844 *
1845 * @bp: driver handle
1846 * @index: fastpath index to be zeroed
1847 *
1848 * Makes sure the contents of the bp->fp[index].napi is kept
1849 * intact.
1850 */
1851 static void bnx2x_bz_fp(struct bnx2x *bp, int index)
1852 {
1853 struct bnx2x_fastpath *fp = &bp->fp[index];
1854 struct napi_struct orig_napi = fp->napi;
1855 /* bzero bnx2x_fastpath contents */
1856 if (bp->stats_init)
1857 memset(fp, 0, sizeof(*fp));
1858 else {
1859 /* Keep Queue statistics */
1860 struct bnx2x_eth_q_stats *tmp_eth_q_stats;
1861 struct bnx2x_eth_q_stats_old *tmp_eth_q_stats_old;
1862
1863 tmp_eth_q_stats = kzalloc(sizeof(struct bnx2x_eth_q_stats),
1864 GFP_KERNEL);
1865 if (tmp_eth_q_stats)
1866 memcpy(tmp_eth_q_stats, &fp->eth_q_stats,
1867 sizeof(struct bnx2x_eth_q_stats));
1868
1869 tmp_eth_q_stats_old =
1870 kzalloc(sizeof(struct bnx2x_eth_q_stats_old),
1871 GFP_KERNEL);
1872 if (tmp_eth_q_stats_old)
1873 memcpy(tmp_eth_q_stats_old, &fp->eth_q_stats_old,
1874 sizeof(struct bnx2x_eth_q_stats_old));
1875
1876 memset(fp, 0, sizeof(*fp));
1877
1878 if (tmp_eth_q_stats) {
1879 memcpy(&fp->eth_q_stats, tmp_eth_q_stats,
1880 sizeof(struct bnx2x_eth_q_stats));
1881 kfree(tmp_eth_q_stats);
1882 }
1883
1884 if (tmp_eth_q_stats_old) {
1885 memcpy(&fp->eth_q_stats_old, tmp_eth_q_stats_old,
1886 sizeof(struct bnx2x_eth_q_stats_old));
1887 kfree(tmp_eth_q_stats_old);
1888 }
1889
1890 }
1891
1892 /* Restore the NAPI object as it has been already initialized */
1893 fp->napi = orig_napi;
1894
1895 fp->bp = bp;
1896 fp->index = index;
1897 if (IS_ETH_FP(fp))
1898 fp->max_cos = bp->max_cos;
1899 else
1900 /* Special queues support only one CoS */
1901 fp->max_cos = 1;
1902
1903 /*
1904 * set the tpa flag for each queue. The tpa flag determines the queue
1905 * minimal size so it must be set prior to queue memory allocation
1906 */
1907 fp->disable_tpa = !(bp->flags & TPA_ENABLE_FLAG ||
1908 (bp->flags & GRO_ENABLE_FLAG &&
1909 bnx2x_mtu_allows_gro(bp->dev->mtu)));
1910 if (bp->flags & TPA_ENABLE_FLAG)
1911 fp->mode = TPA_MODE_LRO;
1912 else if (bp->flags & GRO_ENABLE_FLAG)
1913 fp->mode = TPA_MODE_GRO;
1914
1915 #ifdef BCM_CNIC
1916 /* We don't want TPA on an FCoE L2 ring */
1917 if (IS_FCOE_FP(fp))
1918 fp->disable_tpa = 1;
1919 #endif
1920 }
1921
1922
1923 /* must be called with rtnl_lock */
1924 int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
1925 {
1926 int port = BP_PORT(bp);
1927 u32 load_code;
1928 int i, rc;
1929
1930 #ifdef BNX2X_STOP_ON_ERROR
1931 if (unlikely(bp->panic)) {
1932 BNX2X_ERR("Can't load NIC when there is panic\n");
1933 return -EPERM;
1934 }
1935 #endif
1936
1937 bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
1938
1939 /* Set the initial link reported state to link down */
1940 bnx2x_acquire_phy_lock(bp);
1941 memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link));
1942 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
1943 &bp->last_reported_link.link_report_flags);
1944 bnx2x_release_phy_lock(bp);
1945
1946 /* must be called before memory allocation and HW init */
1947 bnx2x_ilt_set_info(bp);
1948
1949 /*
1950 * Zero fastpath structures preserving invariants like napi, which are
1951 * allocated only once, fp index, max_cos, bp pointer.
1952 * Also set fp->disable_tpa.
1953 */
1954 DP(NETIF_MSG_IFUP, "num queues: %d", bp->num_queues);
1955 for_each_queue(bp, i)
1956 bnx2x_bz_fp(bp, i);
1957
1958
1959 /* Set the receive queues buffer size */
1960 bnx2x_set_rx_buf_size(bp);
1961
1962 if (bnx2x_alloc_mem(bp))
1963 return -ENOMEM;
1964
1965 /* As long as bnx2x_alloc_mem() may possibly update
1966 * bp->num_queues, bnx2x_set_real_num_queues() should always
1967 * come after it.
1968 */
1969 rc = bnx2x_set_real_num_queues(bp);
1970 if (rc) {
1971 BNX2X_ERR("Unable to set real_num_queues\n");
1972 LOAD_ERROR_EXIT(bp, load_error0);
1973 }
1974
1975 /* configure multi cos mappings in kernel.
1976 * this configuration may be overriden by a multi class queue discipline
1977 * or by a dcbx negotiation result.
1978 */
1979 bnx2x_setup_tc(bp->dev, bp->max_cos);
1980
1981 bnx2x_napi_enable(bp);
1982
1983 /* set pf load just before approaching the MCP */
1984 bnx2x_set_pf_load(bp);
1985
1986 /* Send LOAD_REQUEST command to MCP
1987 * Returns the type of LOAD command:
1988 * if it is the first port to be initialized
1989 * common blocks should be initialized, otherwise - not
1990 */
1991 if (!BP_NOMCP(bp)) {
1992 /* init fw_seq */
1993 bp->fw_seq =
1994 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
1995 DRV_MSG_SEQ_NUMBER_MASK);
1996 BNX2X_DEV_INFO("fw_seq 0x%08x\n", bp->fw_seq);
1997
1998 /* Get current FW pulse sequence */
1999 bp->fw_drv_pulse_wr_seq =
2000 (SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb) &
2001 DRV_PULSE_SEQ_MASK);
2002 BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
2003
2004 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0);
2005 if (!load_code) {
2006 BNX2X_ERR("MCP response failure, aborting\n");
2007 rc = -EBUSY;
2008 LOAD_ERROR_EXIT(bp, load_error1);
2009 }
2010 if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) {
2011 BNX2X_ERR("Driver load refused\n");
2012 rc = -EBUSY; /* other port in diagnostic mode */
2013 LOAD_ERROR_EXIT(bp, load_error1);
2014 }
2015 if (load_code != FW_MSG_CODE_DRV_LOAD_COMMON_CHIP &&
2016 load_code != FW_MSG_CODE_DRV_LOAD_COMMON) {
2017 /* abort nic load if version mismatch */
2018 if (!bnx2x_test_firmware_version(bp, true)) {
2019 rc = -EBUSY;
2020 LOAD_ERROR_EXIT(bp, load_error2);
2021 }
2022 }
2023
2024 } else {
2025 int path = BP_PATH(bp);
2026
2027 DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n",
2028 path, load_count[path][0], load_count[path][1],
2029 load_count[path][2]);
2030 load_count[path][0]++;
2031 load_count[path][1 + port]++;
2032 DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n",
2033 path, load_count[path][0], load_count[path][1],
2034 load_count[path][2]);
2035 if (load_count[path][0] == 1)
2036 load_code = FW_MSG_CODE_DRV_LOAD_COMMON;
2037 else if (load_count[path][1 + port] == 1)
2038 load_code = FW_MSG_CODE_DRV_LOAD_PORT;
2039 else
2040 load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION;
2041 }
2042
2043 if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2044 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) ||
2045 (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) {
2046 bp->port.pmf = 1;
2047 /*
2048 * We need the barrier to ensure the ordering between the
2049 * writing to bp->port.pmf here and reading it from the
2050 * bnx2x_periodic_task().
2051 */
2052 smp_mb();
2053 } else
2054 bp->port.pmf = 0;
2055
2056 DP(NETIF_MSG_IFUP, "pmf %d\n", bp->port.pmf);
2057
2058 /* Init Function state controlling object */
2059 bnx2x__init_func_obj(bp);
2060
2061 /* Initialize HW */
2062 rc = bnx2x_init_hw(bp, load_code);
2063 if (rc) {
2064 BNX2X_ERR("HW init failed, aborting\n");
2065 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2066 LOAD_ERROR_EXIT(bp, load_error2);
2067 }
2068
2069 /* Connect to IRQs */
2070 rc = bnx2x_setup_irqs(bp);
2071 if (rc) {
2072 BNX2X_ERR("IRQs setup failed\n");
2073 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2074 LOAD_ERROR_EXIT(bp, load_error2);
2075 }
2076
2077 /* Setup NIC internals and enable interrupts */
2078 bnx2x_nic_init(bp, load_code);
2079
2080 /* Init per-function objects */
2081 bnx2x_init_bp_objs(bp);
2082
2083 if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) ||
2084 (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) &&
2085 (bp->common.shmem2_base)) {
2086 if (SHMEM2_HAS(bp, dcc_support))
2087 SHMEM2_WR(bp, dcc_support,
2088 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
2089 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
2090 if (SHMEM2_HAS(bp, afex_driver_support))
2091 SHMEM2_WR(bp, afex_driver_support,
2092 SHMEM_AFEX_SUPPORTED_VERSION_ONE);
2093 }
2094
2095 /* Set AFEX default VLAN tag to an invalid value */
2096 bp->afex_def_vlan_tag = -1;
2097
2098 bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
2099 rc = bnx2x_func_start(bp);
2100 if (rc) {
2101 BNX2X_ERR("Function start failed!\n");
2102 bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2103 LOAD_ERROR_EXIT(bp, load_error3);
2104 }
2105
2106 /* Send LOAD_DONE command to MCP */
2107 if (!BP_NOMCP(bp)) {
2108 load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0);
2109 if (!load_code) {
2110 BNX2X_ERR("MCP response failure, aborting\n");
2111 rc = -EBUSY;
2112 LOAD_ERROR_EXIT(bp, load_error3);
2113 }
2114 }
2115
2116 rc = bnx2x_setup_leading(bp);
2117 if (rc) {
2118 BNX2X_ERR("Setup leading failed!\n");
2119 LOAD_ERROR_EXIT(bp, load_error3);
2120 }
2121
2122 #ifdef BCM_CNIC
2123 /* Enable Timer scan */
2124 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 1);
2125 #endif
2126
2127 for_each_nondefault_queue(bp, i) {
2128 rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
2129 if (rc) {
2130 BNX2X_ERR("Queue setup failed\n");
2131 LOAD_ERROR_EXIT(bp, load_error4);
2132 }
2133 }
2134
2135 rc = bnx2x_init_rss_pf(bp);
2136 if (rc) {
2137 BNX2X_ERR("PF RSS init failed\n");
2138 LOAD_ERROR_EXIT(bp, load_error4);
2139 }
2140
2141 /* Now when Clients are configured we are ready to work */
2142 bp->state = BNX2X_STATE_OPEN;
2143
2144 /* Configure a ucast MAC */
2145 rc = bnx2x_set_eth_mac(bp, true);
2146 if (rc) {
2147 BNX2X_ERR("Setting Ethernet MAC failed\n");
2148 LOAD_ERROR_EXIT(bp, load_error4);
2149 }
2150
2151 if (bp->pending_max) {
2152 bnx2x_update_max_mf_config(bp, bp->pending_max);
2153 bp->pending_max = 0;
2154 }
2155
2156 if (bp->port.pmf)
2157 bnx2x_initial_phy_init(bp, load_mode);
2158
2159 /* Start fast path */
2160
2161 /* Initialize Rx filter. */
2162 netif_addr_lock_bh(bp->dev);
2163 bnx2x_set_rx_mode(bp->dev);
2164 netif_addr_unlock_bh(bp->dev);
2165
2166 /* Start the Tx */
2167 switch (load_mode) {
2168 case LOAD_NORMAL:
2169 /* Tx queue should be only reenabled */
2170 netif_tx_wake_all_queues(bp->dev);
2171 break;
2172
2173 case LOAD_OPEN:
2174 netif_tx_start_all_queues(bp->dev);
2175 smp_mb__after_clear_bit();
2176 break;
2177
2178 case LOAD_DIAG:
2179 bp->state = BNX2X_STATE_DIAG;
2180 break;
2181
2182 default:
2183 break;
2184 }
2185
2186 if (bp->port.pmf)
2187 bnx2x_update_drv_flags(bp, 1 << DRV_FLAGS_DCB_CONFIGURED, 0);
2188 else
2189 bnx2x__link_status_update(bp);
2190
2191 /* start the timer */
2192 mod_timer(&bp->timer, jiffies + bp->current_interval);
2193
2194 #ifdef BCM_CNIC
2195 /* re-read iscsi info */
2196 bnx2x_get_iscsi_info(bp);
2197 bnx2x_setup_cnic_irq_info(bp);
2198 if (bp->state == BNX2X_STATE_OPEN)
2199 bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
2200 #endif
2201
2202 /* mark driver is loaded in shmem2 */
2203 if (SHMEM2_HAS(bp, drv_capabilities_flag)) {
2204 u32 val;
2205 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2206 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2207 val | DRV_FLAGS_CAPABILITIES_LOADED_SUPPORTED |
2208 DRV_FLAGS_CAPABILITIES_LOADED_L2);
2209 }
2210
2211 /* Wait for all pending SP commands to complete */
2212 if (!bnx2x_wait_sp_comp(bp, ~0x0UL)) {
2213 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
2214 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
2215 return -EBUSY;
2216 }
2217
2218 bnx2x_dcbx_init(bp);
2219 return 0;
2220
2221 #ifndef BNX2X_STOP_ON_ERROR
2222 load_error4:
2223 #ifdef BCM_CNIC
2224 /* Disable Timer scan */
2225 REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + port*4, 0);
2226 #endif
2227 load_error3:
2228 bnx2x_int_disable_sync(bp, 1);
2229
2230 /* Clean queueable objects */
2231 bnx2x_squeeze_objects(bp);
2232
2233 /* Free SKBs, SGEs, TPA pool and driver internals */
2234 bnx2x_free_skbs(bp);
2235 for_each_rx_queue(bp, i)
2236 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2237
2238 /* Release IRQs */
2239 bnx2x_free_irq(bp);
2240 load_error2:
2241 if (!BP_NOMCP(bp)) {
2242 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0);
2243 bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0);
2244 }
2245
2246 bp->port.pmf = 0;
2247 load_error1:
2248 bnx2x_napi_disable(bp);
2249 /* clear pf_load status, as it was already set */
2250 bnx2x_clear_pf_load(bp);
2251 load_error0:
2252 bnx2x_free_mem(bp);
2253
2254 return rc;
2255 #endif /* ! BNX2X_STOP_ON_ERROR */
2256 }
2257
2258 /* must be called with rtnl_lock */
2259 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
2260 {
2261 int i;
2262 bool global = false;
2263
2264 /* mark driver is unloaded in shmem2 */
2265 if (SHMEM2_HAS(bp, drv_capabilities_flag)) {
2266 u32 val;
2267 val = SHMEM2_RD(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)]);
2268 SHMEM2_WR(bp, drv_capabilities_flag[BP_FW_MB_IDX(bp)],
2269 val & ~DRV_FLAGS_CAPABILITIES_LOADED_L2);
2270 }
2271
2272 if ((bp->state == BNX2X_STATE_CLOSED) ||
2273 (bp->state == BNX2X_STATE_ERROR)) {
2274 /* We can get here if the driver has been unloaded
2275 * during parity error recovery and is either waiting for a
2276 * leader to complete or for other functions to unload and
2277 * then ifdown has been issued. In this case we want to
2278 * unload and let other functions to complete a recovery
2279 * process.
2280 */
2281 bp->recovery_state = BNX2X_RECOVERY_DONE;
2282 bp->is_leader = 0;
2283 bnx2x_release_leader_lock(bp);
2284 smp_mb();
2285
2286 DP(NETIF_MSG_IFDOWN, "Releasing a leadership...\n");
2287 BNX2X_ERR("Can't unload in closed or error state\n");
2288 return -EINVAL;
2289 }
2290
2291 /*
2292 * It's important to set the bp->state to the value different from
2293 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
2294 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
2295 */
2296 bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
2297 smp_mb();
2298
2299 /* Stop Tx */
2300 bnx2x_tx_disable(bp);
2301
2302 #ifdef BCM_CNIC
2303 bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
2304 #endif
2305
2306 bp->rx_mode = BNX2X_RX_MODE_NONE;
2307
2308 del_timer_sync(&bp->timer);
2309
2310 /* Set ALWAYS_ALIVE bit in shmem */
2311 bp->fw_drv_pulse_wr_seq |= DRV_PULSE_ALWAYS_ALIVE;
2312
2313 bnx2x_drv_pulse(bp);
2314
2315 bnx2x_stats_handle(bp, STATS_EVENT_STOP);
2316 bnx2x_save_statistics(bp);
2317
2318 /* Cleanup the chip if needed */
2319 if (unload_mode != UNLOAD_RECOVERY)
2320 bnx2x_chip_cleanup(bp, unload_mode);
2321 else {
2322 /* Send the UNLOAD_REQUEST to the MCP */
2323 bnx2x_send_unload_req(bp, unload_mode);
2324
2325 /*
2326 * Prevent transactions to host from the functions on the
2327 * engine that doesn't reset global blocks in case of global
2328 * attention once gloabl blocks are reset and gates are opened
2329 * (the engine which leader will perform the recovery
2330 * last).
2331 */
2332 if (!CHIP_IS_E1x(bp))
2333 bnx2x_pf_disable(bp);
2334
2335 /* Disable HW interrupts, NAPI */
2336 bnx2x_netif_stop(bp, 1);
2337
2338 /* Release IRQs */
2339 bnx2x_free_irq(bp);
2340
2341 /* Report UNLOAD_DONE to MCP */
2342 bnx2x_send_unload_done(bp);
2343 }
2344
2345 /*
2346 * At this stage no more interrupts will arrive so we may safly clean
2347 * the queueable objects here in case they failed to get cleaned so far.
2348 */
2349 bnx2x_squeeze_objects(bp);
2350
2351 /* There should be no more pending SP commands at this stage */
2352 bp->sp_state = 0;
2353
2354 bp->port.pmf = 0;
2355
2356 /* Free SKBs, SGEs, TPA pool and driver internals */
2357 bnx2x_free_skbs(bp);
2358 for_each_rx_queue(bp, i)
2359 bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
2360
2361 bnx2x_free_mem(bp);
2362
2363 bp->state = BNX2X_STATE_CLOSED;
2364
2365 /* Check if there are pending parity attentions. If there are - set
2366 * RECOVERY_IN_PROGRESS.
2367 */
2368 if (bnx2x_chk_parity_attn(bp, &global, false)) {
2369 bnx2x_set_reset_in_progress(bp);
2370
2371 /* Set RESET_IS_GLOBAL if needed */
2372 if (global)
2373 bnx2x_set_reset_global(bp);
2374 }
2375
2376
2377 /* The last driver must disable a "close the gate" if there is no
2378 * parity attention or "process kill" pending.
2379 */
2380 if (!bnx2x_clear_pf_load(bp) && bnx2x_reset_is_done(bp, BP_PATH(bp)))
2381 bnx2x_disable_close_the_gate(bp);
2382
2383 return 0;
2384 }
2385
2386 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
2387 {
2388 u16 pmcsr;
2389
2390 /* If there is no power capability, silently succeed */
2391 if (!bp->pm_cap) {
2392 BNX2X_DEV_INFO("No power capability. Breaking.\n");
2393 return 0;
2394 }
2395
2396 pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr);
2397
2398 switch (state) {
2399 case PCI_D0:
2400 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2401 ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) |
2402 PCI_PM_CTRL_PME_STATUS));
2403
2404 if (pmcsr & PCI_PM_CTRL_STATE_MASK)
2405 /* delay required during transition out of D3hot */
2406 msleep(20);
2407 break;
2408
2409 case PCI_D3hot:
2410 /* If there are other clients above don't
2411 shut down the power */
2412 if (atomic_read(&bp->pdev->enable_cnt) != 1)
2413 return 0;
2414 /* Don't shut down the power for emulation and FPGA */
2415 if (CHIP_REV_IS_SLOW(bp))
2416 return 0;
2417
2418 pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
2419 pmcsr |= 3;
2420
2421 if (bp->wol)
2422 pmcsr |= PCI_PM_CTRL_PME_ENABLE;
2423
2424 pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL,
2425 pmcsr);
2426
2427 /* No more memory access after this point until
2428 * device is brought back to D0.
2429 */
2430 break;
2431
2432 default:
2433 dev_err(&bp->pdev->dev, "Can't support state = %d\n", state);
2434 return -EINVAL;
2435 }
2436 return 0;
2437 }
2438
2439 /*
2440 * net_device service functions
2441 */
2442 int bnx2x_poll(struct napi_struct *napi, int budget)
2443 {
2444 int work_done = 0;
2445 u8 cos;
2446 struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
2447 napi);
2448 struct bnx2x *bp = fp->bp;
2449
2450 while (1) {
2451 #ifdef BNX2X_STOP_ON_ERROR
2452 if (unlikely(bp->panic)) {
2453 napi_complete(napi);
2454 return 0;
2455 }
2456 #endif
2457
2458 for_each_cos_in_tx_queue(fp, cos)
2459 if (bnx2x_tx_queue_has_work(&fp->txdata[cos]))
2460 bnx2x_tx_int(bp, &fp->txdata[cos]);
2461
2462
2463 if (bnx2x_has_rx_work(fp)) {
2464 work_done += bnx2x_rx_int(fp, budget - work_done);
2465
2466 /* must not complete if we consumed full budget */
2467 if (work_done >= budget)
2468 break;
2469 }
2470
2471 /* Fall out from the NAPI loop if needed */
2472 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2473 #ifdef BCM_CNIC
2474 /* No need to update SB for FCoE L2 ring as long as
2475 * it's connected to the default SB and the SB
2476 * has been updated when NAPI was scheduled.
2477 */
2478 if (IS_FCOE_FP(fp)) {
2479 napi_complete(napi);
2480 break;
2481 }
2482 #endif
2483
2484 bnx2x_update_fpsb_idx(fp);
2485 /* bnx2x_has_rx_work() reads the status block,
2486 * thus we need to ensure that status block indices
2487 * have been actually read (bnx2x_update_fpsb_idx)
2488 * prior to this check (bnx2x_has_rx_work) so that
2489 * we won't write the "newer" value of the status block
2490 * to IGU (if there was a DMA right after
2491 * bnx2x_has_rx_work and if there is no rmb, the memory
2492 * reading (bnx2x_update_fpsb_idx) may be postponed
2493 * to right before bnx2x_ack_sb). In this case there
2494 * will never be another interrupt until there is
2495 * another update of the status block, while there
2496 * is still unhandled work.
2497 */
2498 rmb();
2499
2500 if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
2501 napi_complete(napi);
2502 /* Re-enable interrupts */
2503 DP(NETIF_MSG_RX_STATUS,
2504 "Update index to %d\n", fp->fp_hc_idx);
2505 bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID,
2506 le16_to_cpu(fp->fp_hc_idx),
2507 IGU_INT_ENABLE, 1);
2508 break;
2509 }
2510 }
2511 }
2512
2513 return work_done;
2514 }
2515
2516 /* we split the first BD into headers and data BDs
2517 * to ease the pain of our fellow microcode engineers
2518 * we use one mapping for both BDs
2519 * So far this has only been observed to happen
2520 * in Other Operating Systems(TM)
2521 */
2522 static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
2523 struct bnx2x_fp_txdata *txdata,
2524 struct sw_tx_bd *tx_buf,
2525 struct eth_tx_start_bd **tx_bd, u16 hlen,
2526 u16 bd_prod, int nbd)
2527 {
2528 struct eth_tx_start_bd *h_tx_bd = *tx_bd;
2529 struct eth_tx_bd *d_tx_bd;
2530 dma_addr_t mapping;
2531 int old_len = le16_to_cpu(h_tx_bd->nbytes);
2532
2533 /* first fix first BD */
2534 h_tx_bd->nbd = cpu_to_le16(nbd);
2535 h_tx_bd->nbytes = cpu_to_le16(hlen);
2536
2537 DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d (%x:%x) nbd %d\n",
2538 h_tx_bd->nbytes, h_tx_bd->addr_hi, h_tx_bd->addr_lo, h_tx_bd->nbd);
2539
2540 /* now get a new data BD
2541 * (after the pbd) and fill it */
2542 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2543 d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
2544
2545 mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
2546 le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
2547
2548 d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
2549 d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
2550 d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
2551
2552 /* this marks the BD as one that has no individual mapping */
2553 tx_buf->flags |= BNX2X_TSO_SPLIT_BD;
2554
2555 DP(NETIF_MSG_TX_QUEUED,
2556 "TSO split data size is %d (%x:%x)\n",
2557 d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
2558
2559 /* update tx_bd */
2560 *tx_bd = (struct eth_tx_start_bd *)d_tx_bd;
2561
2562 return bd_prod;
2563 }
2564
2565 static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
2566 {
2567 if (fix > 0)
2568 csum = (u16) ~csum_fold(csum_sub(csum,
2569 csum_partial(t_header - fix, fix, 0)));
2570
2571 else if (fix < 0)
2572 csum = (u16) ~csum_fold(csum_add(csum,
2573 csum_partial(t_header, -fix, 0)));
2574
2575 return swab16(csum);
2576 }
2577
2578 static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
2579 {
2580 u32 rc;
2581
2582 if (skb->ip_summed != CHECKSUM_PARTIAL)
2583 rc = XMIT_PLAIN;
2584
2585 else {
2586 if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) {
2587 rc = XMIT_CSUM_V6;
2588 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2589 rc |= XMIT_CSUM_TCP;
2590
2591 } else {
2592 rc = XMIT_CSUM_V4;
2593 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2594 rc |= XMIT_CSUM_TCP;
2595 }
2596 }
2597
2598 if (skb_is_gso_v6(skb))
2599 rc |= XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6;
2600 else if (skb_is_gso(skb))
2601 rc |= XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP;
2602
2603 return rc;
2604 }
2605
2606 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2607 /* check if packet requires linearization (packet is too fragmented)
2608 no need to check fragmentation if page size > 8K (there will be no
2609 violation to FW restrictions) */
2610 static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
2611 u32 xmit_type)
2612 {
2613 int to_copy = 0;
2614 int hlen = 0;
2615 int first_bd_sz = 0;
2616
2617 /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
2618 if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
2619
2620 if (xmit_type & XMIT_GSO) {
2621 unsigned short lso_mss = skb_shinfo(skb)->gso_size;
2622 /* Check if LSO packet needs to be copied:
2623 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
2624 int wnd_size = MAX_FETCH_BD - 3;
2625 /* Number of windows to check */
2626 int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
2627 int wnd_idx = 0;
2628 int frag_idx = 0;
2629 u32 wnd_sum = 0;
2630
2631 /* Headers length */
2632 hlen = (int)(skb_transport_header(skb) - skb->data) +
2633 tcp_hdrlen(skb);
2634
2635 /* Amount of data (w/o headers) on linear part of SKB*/
2636 first_bd_sz = skb_headlen(skb) - hlen;
2637
2638 wnd_sum = first_bd_sz;
2639
2640 /* Calculate the first sum - it's special */
2641 for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
2642 wnd_sum +=
2643 skb_frag_size(&skb_shinfo(skb)->frags[frag_idx]);
2644
2645 /* If there was data on linear skb data - check it */
2646 if (first_bd_sz > 0) {
2647 if (unlikely(wnd_sum < lso_mss)) {
2648 to_copy = 1;
2649 goto exit_lbl;
2650 }
2651
2652 wnd_sum -= first_bd_sz;
2653 }
2654
2655 /* Others are easier: run through the frag list and
2656 check all windows */
2657 for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
2658 wnd_sum +=
2659 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1]);
2660
2661 if (unlikely(wnd_sum < lso_mss)) {
2662 to_copy = 1;
2663 break;
2664 }
2665 wnd_sum -=
2666 skb_frag_size(&skb_shinfo(skb)->frags[wnd_idx]);
2667 }
2668 } else {
2669 /* in non-LSO too fragmented packet should always
2670 be linearized */
2671 to_copy = 1;
2672 }
2673 }
2674
2675 exit_lbl:
2676 if (unlikely(to_copy))
2677 DP(NETIF_MSG_TX_QUEUED,
2678 "Linearization IS REQUIRED for %s packet. num_frags %d hlen %d first_bd_sz %d\n",
2679 (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
2680 skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
2681
2682 return to_copy;
2683 }
2684 #endif
2685
2686 static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
2687 u32 xmit_type)
2688 {
2689 *parsing_data |= (skb_shinfo(skb)->gso_size <<
2690 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
2691 ETH_TX_PARSE_BD_E2_LSO_MSS;
2692 if ((xmit_type & XMIT_GSO_V6) &&
2693 (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
2694 *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
2695 }
2696
2697 /**
2698 * bnx2x_set_pbd_gso - update PBD in GSO case.
2699 *
2700 * @skb: packet skb
2701 * @pbd: parse BD
2702 * @xmit_type: xmit flags
2703 */
2704 static inline void bnx2x_set_pbd_gso(struct sk_buff *skb,
2705 struct eth_tx_parse_bd_e1x *pbd,
2706 u32 xmit_type)
2707 {
2708 pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
2709 pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq);
2710 pbd->tcp_flags = pbd_tcp_flags(skb);
2711
2712 if (xmit_type & XMIT_GSO_V4) {
2713 pbd->ip_id = swab16(ip_hdr(skb)->id);
2714 pbd->tcp_pseudo_csum =
2715 swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr,
2716 ip_hdr(skb)->daddr,
2717 0, IPPROTO_TCP, 0));
2718
2719 } else
2720 pbd->tcp_pseudo_csum =
2721 swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2722 &ipv6_hdr(skb)->daddr,
2723 0, IPPROTO_TCP, 0));
2724
2725 pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN;
2726 }
2727
2728 /**
2729 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
2730 *
2731 * @bp: driver handle
2732 * @skb: packet skb
2733 * @parsing_data: data to be updated
2734 * @xmit_type: xmit flags
2735 *
2736 * 57712 related
2737 */
2738 static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
2739 u32 *parsing_data, u32 xmit_type)
2740 {
2741 *parsing_data |=
2742 ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) <<
2743 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) &
2744 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W;
2745
2746 if (xmit_type & XMIT_CSUM_TCP) {
2747 *parsing_data |= ((tcp_hdrlen(skb) / 4) <<
2748 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
2749 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
2750
2751 return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
2752 } else
2753 /* We support checksum offload for TCP and UDP only.
2754 * No need to pass the UDP header length - it's a constant.
2755 */
2756 return skb_transport_header(skb) +
2757 sizeof(struct udphdr) - skb->data;
2758 }
2759
2760 static inline void bnx2x_set_sbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2761 struct eth_tx_start_bd *tx_start_bd, u32 xmit_type)
2762 {
2763 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM;
2764
2765 if (xmit_type & XMIT_CSUM_V4)
2766 tx_start_bd->bd_flags.as_bitfield |=
2767 ETH_TX_BD_FLAGS_IP_CSUM;
2768 else
2769 tx_start_bd->bd_flags.as_bitfield |=
2770 ETH_TX_BD_FLAGS_IPV6;
2771
2772 if (!(xmit_type & XMIT_CSUM_TCP))
2773 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IS_UDP;
2774 }
2775
2776 /**
2777 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
2778 *
2779 * @bp: driver handle
2780 * @skb: packet skb
2781 * @pbd: parse BD to be updated
2782 * @xmit_type: xmit flags
2783 */
2784 static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
2785 struct eth_tx_parse_bd_e1x *pbd,
2786 u32 xmit_type)
2787 {
2788 u8 hlen = (skb_network_header(skb) - skb->data) >> 1;
2789
2790 /* for now NS flag is not used in Linux */
2791 pbd->global_data =
2792 (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
2793 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT));
2794
2795 pbd->ip_hlen_w = (skb_transport_header(skb) -
2796 skb_network_header(skb)) >> 1;
2797
2798 hlen += pbd->ip_hlen_w;
2799
2800 /* We support checksum offload for TCP and UDP only */
2801 if (xmit_type & XMIT_CSUM_TCP)
2802 hlen += tcp_hdrlen(skb) / 2;
2803 else
2804 hlen += sizeof(struct udphdr) / 2;
2805
2806 pbd->total_hlen_w = cpu_to_le16(hlen);
2807 hlen = hlen*2;
2808
2809 if (xmit_type & XMIT_CSUM_TCP) {
2810 pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check);
2811
2812 } else {
2813 s8 fix = SKB_CS_OFF(skb); /* signed! */
2814
2815 DP(NETIF_MSG_TX_QUEUED,
2816 "hlen %d fix %d csum before fix %x\n",
2817 le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb));
2818
2819 /* HW bug: fixup the CSUM */
2820 pbd->tcp_pseudo_csum =
2821 bnx2x_csum_fix(skb_transport_header(skb),
2822 SKB_CS(skb), fix);
2823
2824 DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
2825 pbd->tcp_pseudo_csum);
2826 }
2827
2828 return hlen;
2829 }
2830
2831 /* called with netif_tx_lock
2832 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
2833 * netif_wake_queue()
2834 */
2835 netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
2836 {
2837 struct bnx2x *bp = netdev_priv(dev);
2838
2839 struct bnx2x_fastpath *fp;
2840 struct netdev_queue *txq;
2841 struct bnx2x_fp_txdata *txdata;
2842 struct sw_tx_bd *tx_buf;
2843 struct eth_tx_start_bd *tx_start_bd, *first_bd;
2844 struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
2845 struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
2846 struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
2847 u32 pbd_e2_parsing_data = 0;
2848 u16 pkt_prod, bd_prod;
2849 int nbd, txq_index, fp_index, txdata_index;
2850 dma_addr_t mapping;
2851 u32 xmit_type = bnx2x_xmit_type(bp, skb);
2852 int i;
2853 u8 hlen = 0;
2854 __le16 pkt_size = 0;
2855 struct ethhdr *eth;
2856 u8 mac_type = UNICAST_ADDRESS;
2857
2858 #ifdef BNX2X_STOP_ON_ERROR
2859 if (unlikely(bp->panic))
2860 return NETDEV_TX_BUSY;
2861 #endif
2862
2863 txq_index = skb_get_queue_mapping(skb);
2864 txq = netdev_get_tx_queue(dev, txq_index);
2865
2866 BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + FCOE_PRESENT);
2867
2868 /* decode the fastpath index and the cos index from the txq */
2869 fp_index = TXQ_TO_FP(txq_index);
2870 txdata_index = TXQ_TO_COS(txq_index);
2871
2872 #ifdef BCM_CNIC
2873 /*
2874 * Override the above for the FCoE queue:
2875 * - FCoE fp entry is right after the ETH entries.
2876 * - FCoE L2 queue uses bp->txdata[0] only.
2877 */
2878 if (unlikely(!NO_FCOE(bp) && (txq_index ==
2879 bnx2x_fcoe_tx(bp, txq_index)))) {
2880 fp_index = FCOE_IDX;
2881 txdata_index = 0;
2882 }
2883 #endif
2884
2885 /* enable this debug print to view the transmission queue being used
2886 DP(NETIF_MSG_TX_QUEUED, "indices: txq %d, fp %d, txdata %d\n",
2887 txq_index, fp_index, txdata_index); */
2888
2889 /* locate the fastpath and the txdata */
2890 fp = &bp->fp[fp_index];
2891 txdata = &fp->txdata[txdata_index];
2892
2893 /* enable this debug print to view the tranmission details
2894 DP(NETIF_MSG_TX_QUEUED,
2895 "transmitting packet cid %d fp index %d txdata_index %d tx_data ptr %p fp pointer %p\n",
2896 txdata->cid, fp_index, txdata_index, txdata, fp); */
2897
2898 if (unlikely(bnx2x_tx_avail(bp, txdata) <
2899 (skb_shinfo(skb)->nr_frags + 3))) {
2900 fp->eth_q_stats.driver_xoff++;
2901 netif_tx_stop_queue(txq);
2902 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
2903 return NETDEV_TX_BUSY;
2904 }
2905
2906 DP(NETIF_MSG_TX_QUEUED,
2907 "queue[%d]: SKB: summed %x protocol %x protocol(%x,%x) gso type %x xmit_type %x\n",
2908 txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
2909 ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
2910
2911 eth = (struct ethhdr *)skb->data;
2912
2913 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
2914 if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
2915 if (is_broadcast_ether_addr(eth->h_dest))
2916 mac_type = BROADCAST_ADDRESS;
2917 else
2918 mac_type = MULTICAST_ADDRESS;
2919 }
2920
2921 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2922 /* First, check if we need to linearize the skb (due to FW
2923 restrictions). No need to check fragmentation if page size > 8K
2924 (there will be no violation to FW restrictions) */
2925 if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
2926 /* Statistics of linearization */
2927 bp->lin_cnt++;
2928 if (skb_linearize(skb) != 0) {
2929 DP(NETIF_MSG_TX_QUEUED,
2930 "SKB linearization failed - silently dropping this SKB\n");
2931 dev_kfree_skb_any(skb);
2932 return NETDEV_TX_OK;
2933 }
2934 }
2935 #endif
2936 /* Map skb linear data for DMA */
2937 mapping = dma_map_single(&bp->pdev->dev, skb->data,
2938 skb_headlen(skb), DMA_TO_DEVICE);
2939 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
2940 DP(NETIF_MSG_TX_QUEUED,
2941 "SKB mapping failed - silently dropping this SKB\n");
2942 dev_kfree_skb_any(skb);
2943 return NETDEV_TX_OK;
2944 }
2945 /*
2946 Please read carefully. First we use one BD which we mark as start,
2947 then we have a parsing info BD (used for TSO or xsum),
2948 and only then we have the rest of the TSO BDs.
2949 (don't forget to mark the last one as last,
2950 and to unmap only AFTER you write to the BD ...)
2951 And above all, all pdb sizes are in words - NOT DWORDS!
2952 */
2953
2954 /* get current pkt produced now - advance it just before sending packet
2955 * since mapping of pages may fail and cause packet to be dropped
2956 */
2957 pkt_prod = txdata->tx_pkt_prod;
2958 bd_prod = TX_BD(txdata->tx_bd_prod);
2959
2960 /* get a tx_buf and first BD
2961 * tx_start_bd may be changed during SPLIT,
2962 * but first_bd will always stay first
2963 */
2964 tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
2965 tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
2966 first_bd = tx_start_bd;
2967
2968 tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
2969 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_ETH_ADDR_TYPE,
2970 mac_type);
2971
2972 /* header nbd */
2973 SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1);
2974
2975 /* remember the first BD of the packet */
2976 tx_buf->first_bd = txdata->tx_bd_prod;
2977 tx_buf->skb = skb;
2978 tx_buf->flags = 0;
2979
2980 DP(NETIF_MSG_TX_QUEUED,
2981 "sending pkt %u @%p next_idx %u bd %u @%p\n",
2982 pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
2983
2984 if (vlan_tx_tag_present(skb)) {
2985 tx_start_bd->vlan_or_ethertype =
2986 cpu_to_le16(vlan_tx_tag_get(skb));
2987 tx_start_bd->bd_flags.as_bitfield |=
2988 (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
2989 } else
2990 tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
2991
2992 /* turn on parsing and get a BD */
2993 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
2994
2995 if (xmit_type & XMIT_CSUM)
2996 bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
2997
2998 if (!CHIP_IS_E1x(bp)) {
2999 pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
3000 memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
3001 /* Set PBD in checksum offload case */
3002 if (xmit_type & XMIT_CSUM)
3003 hlen = bnx2x_set_pbd_csum_e2(bp, skb,
3004 &pbd_e2_parsing_data,
3005 xmit_type);
3006 if (IS_MF_SI(bp)) {
3007 /*
3008 * fill in the MAC addresses in the PBD - for local
3009 * switching
3010 */
3011 bnx2x_set_fw_mac_addr(&pbd_e2->src_mac_addr_hi,
3012 &pbd_e2->src_mac_addr_mid,
3013 &pbd_e2->src_mac_addr_lo,
3014 eth->h_source);
3015 bnx2x_set_fw_mac_addr(&pbd_e2->dst_mac_addr_hi,
3016 &pbd_e2->dst_mac_addr_mid,
3017 &pbd_e2->dst_mac_addr_lo,
3018 eth->h_dest);
3019 }
3020 } else {
3021 pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
3022 memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
3023 /* Set PBD in checksum offload case */
3024 if (xmit_type & XMIT_CSUM)
3025 hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type);
3026
3027 }
3028
3029 /* Setup the data pointer of the first BD of the packet */
3030 tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3031 tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3032 nbd = 2; /* start_bd + pbd + frags (updated when pages are mapped) */
3033 tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb));
3034 pkt_size = tx_start_bd->nbytes;
3035
3036 DP(NETIF_MSG_TX_QUEUED,
3037 "first bd @%p addr (%x:%x) nbd %d nbytes %d flags %x vlan %x\n",
3038 tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo,
3039 le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes),
3040 tx_start_bd->bd_flags.as_bitfield,
3041 le16_to_cpu(tx_start_bd->vlan_or_ethertype));
3042
3043 if (xmit_type & XMIT_GSO) {
3044
3045 DP(NETIF_MSG_TX_QUEUED,
3046 "TSO packet len %d hlen %d total len %d tso size %d\n",
3047 skb->len, hlen, skb_headlen(skb),
3048 skb_shinfo(skb)->gso_size);
3049
3050 tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
3051
3052 if (unlikely(skb_headlen(skb) > hlen))
3053 bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
3054 &tx_start_bd, hlen,
3055 bd_prod, ++nbd);
3056 if (!CHIP_IS_E1x(bp))
3057 bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
3058 xmit_type);
3059 else
3060 bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
3061 }
3062
3063 /* Set the PBD's parsing_data field if not zero
3064 * (for the chips newer than 57711).
3065 */
3066 if (pbd_e2_parsing_data)
3067 pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
3068
3069 tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
3070
3071 /* Handle fragmented skb */
3072 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3073 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3074
3075 mapping = skb_frag_dma_map(&bp->pdev->dev, frag, 0,
3076 skb_frag_size(frag), DMA_TO_DEVICE);
3077 if (unlikely(dma_mapping_error(&bp->pdev->dev, mapping))) {
3078 unsigned int pkts_compl = 0, bytes_compl = 0;
3079
3080 DP(NETIF_MSG_TX_QUEUED,
3081 "Unable to map page - dropping packet...\n");
3082
3083 /* we need unmap all buffers already mapped
3084 * for this SKB;
3085 * first_bd->nbd need to be properly updated
3086 * before call to bnx2x_free_tx_pkt
3087 */
3088 first_bd->nbd = cpu_to_le16(nbd);
3089 bnx2x_free_tx_pkt(bp, txdata,
3090 TX_BD(txdata->tx_pkt_prod),
3091 &pkts_compl, &bytes_compl);
3092 return NETDEV_TX_OK;
3093 }
3094
3095 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3096 tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3097 if (total_pkt_bd == NULL)
3098 total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
3099
3100 tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
3101 tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
3102 tx_data_bd->nbytes = cpu_to_le16(skb_frag_size(frag));
3103 le16_add_cpu(&pkt_size, skb_frag_size(frag));
3104 nbd++;
3105
3106 DP(NETIF_MSG_TX_QUEUED,
3107 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
3108 i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo,
3109 le16_to_cpu(tx_data_bd->nbytes));
3110 }
3111
3112 DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd);
3113
3114 /* update with actual num BDs */
3115 first_bd->nbd = cpu_to_le16(nbd);
3116
3117 bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
3118
3119 /* now send a tx doorbell, counting the next BD
3120 * if the packet contains or ends with it
3121 */
3122 if (TX_BD_POFF(bd_prod) < nbd)
3123 nbd++;
3124
3125 /* total_pkt_bytes should be set on the first data BD if
3126 * it's not an LSO packet and there is more than one
3127 * data BD. In this case pkt_size is limited by an MTU value.
3128 * However we prefer to set it for an LSO packet (while we don't
3129 * have to) in order to save some CPU cycles in a none-LSO
3130 * case, when we much more care about them.
3131 */
3132 if (total_pkt_bd != NULL)
3133 total_pkt_bd->total_pkt_bytes = pkt_size;
3134
3135 if (pbd_e1x)
3136 DP(NETIF_MSG_TX_QUEUED,
3137 "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u tcp_flags %x xsum %x seq %u hlen %u\n",
3138 pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w,
3139 pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags,
3140 pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq,
3141 le16_to_cpu(pbd_e1x->total_hlen_w));
3142 if (pbd_e2)
3143 DP(NETIF_MSG_TX_QUEUED,
3144 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
3145 pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid,
3146 pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi,
3147 pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo,
3148 pbd_e2->parsing_data);
3149 DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
3150
3151 netdev_tx_sent_queue(txq, skb->len);
3152
3153 skb_tx_timestamp(skb);
3154
3155 txdata->tx_pkt_prod++;
3156 /*
3157 * Make sure that the BD data is updated before updating the producer
3158 * since FW might read the BD right after the producer is updated.
3159 * This is only applicable for weak-ordered memory model archs such
3160 * as IA-64. The following barrier is also mandatory since FW will
3161 * assumes packets must have BDs.
3162 */
3163 wmb();
3164
3165 txdata->tx_db.data.prod += nbd;
3166 barrier();
3167
3168 DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
3169
3170 mmiowb();
3171
3172 txdata->tx_bd_prod += nbd;
3173
3174 if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_SKB_FRAGS + 3)) {
3175 netif_tx_stop_queue(txq);
3176
3177 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
3178 * ordering of set_bit() in netif_tx_stop_queue() and read of
3179 * fp->bd_tx_cons */
3180 smp_mb();
3181
3182 fp->eth_q_stats.driver_xoff++;
3183 if (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3)
3184 netif_tx_wake_queue(txq);
3185 }
3186 txdata->tx_pkt++;
3187
3188 return NETDEV_TX_OK;
3189 }
3190
3191 /**
3192 * bnx2x_setup_tc - routine to configure net_device for multi tc
3193 *
3194 * @netdev: net device to configure
3195 * @tc: number of traffic classes to enable
3196 *
3197 * callback connected to the ndo_setup_tc function pointer
3198 */
3199 int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
3200 {
3201 int cos, prio, count, offset;
3202 struct bnx2x *bp = netdev_priv(dev);
3203
3204 /* setup tc must be called under rtnl lock */
3205 ASSERT_RTNL();
3206
3207 /* no traffic classes requested. aborting */
3208 if (!num_tc) {
3209 netdev_reset_tc(dev);
3210 return 0;
3211 }
3212
3213 /* requested to support too many traffic classes */
3214 if (num_tc > bp->max_cos) {
3215 BNX2X_ERR("support for too many traffic classes requested: %d. max supported is %d\n",
3216 num_tc, bp->max_cos);
3217 return -EINVAL;
3218 }
3219
3220 /* declare amount of supported traffic classes */
3221 if (netdev_set_num_tc(dev, num_tc)) {
3222 BNX2X_ERR("failed to declare %d traffic classes\n", num_tc);
3223 return -EINVAL;
3224 }
3225
3226 /* configure priority to traffic class mapping */
3227 for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
3228 netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[prio]);
3229 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
3230 "mapping priority %d to tc %d\n",
3231 prio, bp->prio_to_cos[prio]);
3232 }
3233
3234
3235 /* Use this configuration to diffrentiate tc0 from other COSes
3236 This can be used for ets or pfc, and save the effort of setting
3237 up a multio class queue disc or negotiating DCBX with a switch
3238 netdev_set_prio_tc_map(dev, 0, 0);
3239 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", 0, 0);
3240 for (prio = 1; prio < 16; prio++) {
3241 netdev_set_prio_tc_map(dev, prio, 1);
3242 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d\n", prio, 1);
3243 } */
3244
3245 /* configure traffic class to transmission queue mapping */
3246 for (cos = 0; cos < bp->max_cos; cos++) {
3247 count = BNX2X_NUM_ETH_QUEUES(bp);
3248 offset = cos * MAX_TXQS_PER_COS;
3249 netdev_set_tc_queue(dev, cos, count, offset);
3250 DP(BNX2X_MSG_SP | NETIF_MSG_IFUP,
3251 "mapping tc %d to offset %d count %d\n",
3252 cos, offset, count);
3253 }
3254
3255 return 0;
3256 }
3257
3258 /* called with rtnl_lock */
3259 int bnx2x_change_mac_addr(struct net_device *dev, void *p)
3260 {
3261 struct sockaddr *addr = p;
3262 struct bnx2x *bp = netdev_priv(dev);
3263 int rc = 0;
3264
3265 if (!bnx2x_is_valid_ether_addr(bp, addr->sa_data)) {
3266 BNX2X_ERR("Requested MAC address is not valid\n");
3267 return -EINVAL;
3268 }
3269
3270 #ifdef BCM_CNIC
3271 if ((IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp)) &&
3272 !is_zero_ether_addr(addr->sa_data)) {
3273 BNX2X_ERR("Can't configure non-zero address on iSCSI or FCoE functions in MF-SD mode\n");
3274 return -EINVAL;
3275 }
3276 #endif
3277
3278 if (netif_running(dev)) {
3279 rc = bnx2x_set_eth_mac(bp, false);
3280 if (rc)
3281 return rc;
3282 }
3283
3284 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
3285 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3286
3287 if (netif_running(dev))
3288 rc = bnx2x_set_eth_mac(bp, true);
3289
3290 return rc;
3291 }
3292
3293 static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
3294 {
3295 union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
3296 struct bnx2x_fastpath *fp = &bp->fp[fp_index];
3297 u8 cos;
3298
3299 /* Common */
3300 #ifdef BCM_CNIC
3301 if (IS_FCOE_IDX(fp_index)) {
3302 memset(sb, 0, sizeof(union host_hc_status_block));
3303 fp->status_blk_mapping = 0;
3304
3305 } else {
3306 #endif
3307 /* status blocks */
3308 if (!CHIP_IS_E1x(bp))
3309 BNX2X_PCI_FREE(sb->e2_sb,
3310 bnx2x_fp(bp, fp_index,
3311 status_blk_mapping),
3312 sizeof(struct host_hc_status_block_e2));
3313 else
3314 BNX2X_PCI_FREE(sb->e1x_sb,
3315 bnx2x_fp(bp, fp_index,
3316 status_blk_mapping),
3317 sizeof(struct host_hc_status_block_e1x));
3318 #ifdef BCM_CNIC
3319 }
3320 #endif
3321 /* Rx */
3322 if (!skip_rx_queue(bp, fp_index)) {
3323 bnx2x_free_rx_bds(fp);
3324
3325 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3326 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring));
3327 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring),
3328 bnx2x_fp(bp, fp_index, rx_desc_mapping),
3329 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3330
3331 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring),
3332 bnx2x_fp(bp, fp_index, rx_comp_mapping),
3333 sizeof(struct eth_fast_path_rx_cqe) *
3334 NUM_RCQ_BD);
3335
3336 /* SGE ring */
3337 BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring));
3338 BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring),
3339 bnx2x_fp(bp, fp_index, rx_sge_mapping),
3340 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3341 }
3342
3343 /* Tx */
3344 if (!skip_tx_queue(bp, fp_index)) {
3345 /* fastpath tx rings: tx_buf tx_desc */
3346 for_each_cos_in_tx_queue(fp, cos) {
3347 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3348
3349 DP(NETIF_MSG_IFDOWN,
3350 "freeing tx memory of fp %d cos %d cid %d\n",
3351 fp_index, cos, txdata->cid);
3352
3353 BNX2X_FREE(txdata->tx_buf_ring);
3354 BNX2X_PCI_FREE(txdata->tx_desc_ring,
3355 txdata->tx_desc_mapping,
3356 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3357 }
3358 }
3359 /* end of fastpath */
3360 }
3361
3362 void bnx2x_free_fp_mem(struct bnx2x *bp)
3363 {
3364 int i;
3365 for_each_queue(bp, i)
3366 bnx2x_free_fp_mem_at(bp, i);
3367 }
3368
3369 static void set_sb_shortcuts(struct bnx2x *bp, int index)
3370 {
3371 union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk);
3372 if (!CHIP_IS_E1x(bp)) {
3373 bnx2x_fp(bp, index, sb_index_values) =
3374 (__le16 *)status_blk.e2_sb->sb.index_values;
3375 bnx2x_fp(bp, index, sb_running_index) =
3376 (__le16 *)status_blk.e2_sb->sb.running_index;
3377 } else {
3378 bnx2x_fp(bp, index, sb_index_values) =
3379 (__le16 *)status_blk.e1x_sb->sb.index_values;
3380 bnx2x_fp(bp, index, sb_running_index) =
3381 (__le16 *)status_blk.e1x_sb->sb.running_index;
3382 }
3383 }
3384
3385 /* Returns the number of actually allocated BDs */
3386 static int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp,
3387 int rx_ring_size)
3388 {
3389 struct bnx2x *bp = fp->bp;
3390 u16 ring_prod, cqe_ring_prod;
3391 int i, failure_cnt = 0;
3392
3393 fp->rx_comp_cons = 0;
3394 cqe_ring_prod = ring_prod = 0;
3395
3396 /* This routine is called only during fo init so
3397 * fp->eth_q_stats.rx_skb_alloc_failed = 0
3398 */
3399 for (i = 0; i < rx_ring_size; i++) {
3400 if (bnx2x_alloc_rx_data(bp, fp, ring_prod) < 0) {
3401 failure_cnt++;
3402 continue;
3403 }
3404 ring_prod = NEXT_RX_IDX(ring_prod);
3405 cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod);
3406 WARN_ON(ring_prod <= (i - failure_cnt));
3407 }
3408
3409 if (failure_cnt)
3410 BNX2X_ERR("was only able to allocate %d rx skbs on queue[%d]\n",
3411 i - failure_cnt, fp->index);
3412
3413 fp->rx_bd_prod = ring_prod;
3414 /* Limit the CQE producer by the CQE ring size */
3415 fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
3416 cqe_ring_prod);
3417 fp->rx_pkt = fp->rx_calls = 0;
3418
3419 fp->eth_q_stats.rx_skb_alloc_failed += failure_cnt;
3420
3421 return i - failure_cnt;
3422 }
3423
3424 static void bnx2x_set_next_page_rx_cq(struct bnx2x_fastpath *fp)
3425 {
3426 int i;
3427
3428 for (i = 1; i <= NUM_RCQ_RINGS; i++) {
3429 struct eth_rx_cqe_next_page *nextpg;
3430
3431 nextpg = (struct eth_rx_cqe_next_page *)
3432 &fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];
3433 nextpg->addr_hi =
3434 cpu_to_le32(U64_HI(fp->rx_comp_mapping +
3435 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
3436 nextpg->addr_lo =
3437 cpu_to_le32(U64_LO(fp->rx_comp_mapping +
3438 BCM_PAGE_SIZE*(i % NUM_RCQ_RINGS)));
3439 }
3440 }
3441
3442 static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
3443 {
3444 union host_hc_status_block *sb;
3445 struct bnx2x_fastpath *fp = &bp->fp[index];
3446 int ring_size = 0;
3447 u8 cos;
3448 int rx_ring_size = 0;
3449
3450 #ifdef BCM_CNIC
3451 if (!bp->rx_ring_size &&
3452 (IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp))) {
3453 rx_ring_size = MIN_RX_SIZE_NONTPA;
3454 bp->rx_ring_size = rx_ring_size;
3455 } else
3456 #endif
3457 if (!bp->rx_ring_size) {
3458 u32 cfg = SHMEM_RD(bp,
3459 dev_info.port_hw_config[BP_PORT(bp)].default_cfg);
3460
3461 rx_ring_size = MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
3462
3463 /* Dercease ring size for 1G functions */
3464 if ((cfg & PORT_HW_CFG_NET_SERDES_IF_MASK) ==
3465 PORT_HW_CFG_NET_SERDES_IF_SGMII)
3466 rx_ring_size /= 10;
3467
3468 /* allocate at least number of buffers required by FW */
3469 rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
3470 MIN_RX_SIZE_TPA, rx_ring_size);
3471
3472 bp->rx_ring_size = rx_ring_size;
3473 } else /* if rx_ring_size specified - use it */
3474 rx_ring_size = bp->rx_ring_size;
3475
3476 /* Common */
3477 sb = &bnx2x_fp(bp, index, status_blk);
3478 #ifdef BCM_CNIC
3479 if (!IS_FCOE_IDX(index)) {
3480 #endif
3481 /* status blocks */
3482 if (!CHIP_IS_E1x(bp))
3483 BNX2X_PCI_ALLOC(sb->e2_sb,
3484 &bnx2x_fp(bp, index, status_blk_mapping),
3485 sizeof(struct host_hc_status_block_e2));
3486 else
3487 BNX2X_PCI_ALLOC(sb->e1x_sb,
3488 &bnx2x_fp(bp, index, status_blk_mapping),
3489 sizeof(struct host_hc_status_block_e1x));
3490 #ifdef BCM_CNIC
3491 }
3492 #endif
3493
3494 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
3495 * set shortcuts for it.
3496 */
3497 if (!IS_FCOE_IDX(index))
3498 set_sb_shortcuts(bp, index);
3499
3500 /* Tx */
3501 if (!skip_tx_queue(bp, index)) {
3502 /* fastpath tx rings: tx_buf tx_desc */
3503 for_each_cos_in_tx_queue(fp, cos) {
3504 struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
3505
3506 DP(NETIF_MSG_IFUP,
3507 "allocating tx memory of fp %d cos %d\n",
3508 index, cos);
3509
3510 BNX2X_ALLOC(txdata->tx_buf_ring,
3511 sizeof(struct sw_tx_bd) * NUM_TX_BD);
3512 BNX2X_PCI_ALLOC(txdata->tx_desc_ring,
3513 &txdata->tx_desc_mapping,
3514 sizeof(union eth_tx_bd_types) * NUM_TX_BD);
3515 }
3516 }
3517
3518 /* Rx */
3519 if (!skip_rx_queue(bp, index)) {
3520 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3521 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_buf_ring),
3522 sizeof(struct sw_rx_bd) * NUM_RX_BD);
3523 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_desc_ring),
3524 &bnx2x_fp(bp, index, rx_desc_mapping),
3525 sizeof(struct eth_rx_bd) * NUM_RX_BD);
3526
3527 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_comp_ring),
3528 &bnx2x_fp(bp, index, rx_comp_mapping),
3529 sizeof(struct eth_fast_path_rx_cqe) *
3530 NUM_RCQ_BD);
3531
3532 /* SGE ring */
3533 BNX2X_ALLOC(bnx2x_fp(bp, index, rx_page_ring),
3534 sizeof(struct sw_rx_page) * NUM_RX_SGE);
3535 BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_sge_ring),
3536 &bnx2x_fp(bp, index, rx_sge_mapping),
3537 BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
3538 /* RX BD ring */
3539 bnx2x_set_next_page_rx_bd(fp);
3540
3541 /* CQ ring */
3542 bnx2x_set_next_page_rx_cq(fp);
3543
3544 /* BDs */
3545 ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size);
3546 if (ring_size < rx_ring_size)
3547 goto alloc_mem_err;
3548 }
3549
3550 return 0;
3551
3552 /* handles low memory cases */
3553 alloc_mem_err:
3554 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
3555 index, ring_size);
3556 /* FW will drop all packets if queue is not big enough,
3557 * In these cases we disable the queue
3558 * Min size is different for OOO, TPA and non-TPA queues
3559 */
3560 if (ring_size < (fp->disable_tpa ?
3561 MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
3562 /* release memory allocated for this queue */
3563 bnx2x_free_fp_mem_at(bp, index);
3564 return -ENOMEM;
3565 }
3566 return 0;
3567 }
3568
3569 int bnx2x_alloc_fp_mem(struct bnx2x *bp)
3570 {
3571 int i;
3572
3573 /**
3574 * 1. Allocate FP for leading - fatal if error
3575 * 2. {CNIC} Allocate FCoE FP - fatal if error
3576 * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
3577 * 4. Allocate RSS - fix number of queues if error
3578 */
3579
3580 /* leading */
3581 if (bnx2x_alloc_fp_mem_at(bp, 0))
3582 return -ENOMEM;
3583
3584 #ifdef BCM_CNIC
3585 if (!NO_FCOE(bp))
3586 /* FCoE */
3587 if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX))
3588 /* we will fail load process instead of mark
3589 * NO_FCOE_FLAG
3590 */
3591 return -ENOMEM;
3592 #endif
3593
3594 /* RSS */
3595 for_each_nondefault_eth_queue(bp, i)
3596 if (bnx2x_alloc_fp_mem_at(bp, i))
3597 break;
3598
3599 /* handle memory failures */
3600 if (i != BNX2X_NUM_ETH_QUEUES(bp)) {
3601 int delta = BNX2X_NUM_ETH_QUEUES(bp) - i;
3602
3603 WARN_ON(delta < 0);
3604 #ifdef BCM_CNIC
3605 /**
3606 * move non eth FPs next to last eth FP
3607 * must be done in that order
3608 * FCOE_IDX < FWD_IDX < OOO_IDX
3609 */
3610
3611 /* move FCoE fp even NO_FCOE_FLAG is on */
3612 bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta);
3613 #endif
3614 bp->num_queues -= delta;
3615 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
3616 bp->num_queues + delta, bp->num_queues);
3617 }
3618
3619 return 0;
3620 }
3621
3622 void bnx2x_free_mem_bp(struct bnx2x *bp)
3623 {
3624 kfree(bp->fp);
3625 kfree(bp->msix_table);
3626 kfree(bp->ilt);
3627 }
3628
3629 int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp)
3630 {
3631 struct bnx2x_fastpath *fp;
3632 struct msix_entry *tbl;
3633 struct bnx2x_ilt *ilt;
3634 int msix_table_size = 0;
3635
3636 /*
3637 * The biggest MSI-X table we might need is as a maximum number of fast
3638 * path IGU SBs plus default SB (for PF).
3639 */
3640 msix_table_size = bp->igu_sb_cnt + 1;
3641
3642 /* fp array: RSS plus CNIC related L2 queues */
3643 fp = kcalloc(BNX2X_MAX_RSS_COUNT(bp) + NON_ETH_CONTEXT_USE,
3644 sizeof(*fp), GFP_KERNEL);
3645 if (!fp)
3646 goto alloc_err;
3647 bp->fp = fp;
3648
3649 /* msix table */
3650 tbl = kcalloc(msix_table_size, sizeof(*tbl), GFP_KERNEL);
3651 if (!tbl)
3652 goto alloc_err;
3653 bp->msix_table = tbl;
3654
3655 /* ilt */
3656 ilt = kzalloc(sizeof(*ilt), GFP_KERNEL);
3657 if (!ilt)
3658 goto alloc_err;
3659 bp->ilt = ilt;
3660
3661 return 0;
3662 alloc_err:
3663 bnx2x_free_mem_bp(bp);
3664 return -ENOMEM;
3665
3666 }
3667
3668 int bnx2x_reload_if_running(struct net_device *dev)
3669 {
3670 struct bnx2x *bp = netdev_priv(dev);
3671
3672 if (unlikely(!netif_running(dev)))
3673 return 0;
3674
3675 bnx2x_nic_unload(bp, UNLOAD_NORMAL);
3676 return bnx2x_nic_load(bp, LOAD_NORMAL);
3677 }
3678
3679 int bnx2x_get_cur_phy_idx(struct bnx2x *bp)
3680 {
3681 u32 sel_phy_idx = 0;
3682 if (bp->link_params.num_phys <= 1)
3683 return INT_PHY;
3684
3685 if (bp->link_vars.link_up) {
3686 sel_phy_idx = EXT_PHY1;
3687 /* In case link is SERDES, check if the EXT_PHY2 is the one */
3688 if ((bp->link_vars.link_status & LINK_STATUS_SERDES_LINK) &&
3689 (bp->link_params.phy[EXT_PHY2].supported & SUPPORTED_FIBRE))
3690 sel_phy_idx = EXT_PHY2;
3691 } else {
3692
3693 switch (bnx2x_phy_selection(&bp->link_params)) {
3694 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT:
3695 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY:
3696 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY:
3697 sel_phy_idx = EXT_PHY1;
3698 break;
3699 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY:
3700 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY:
3701 sel_phy_idx = EXT_PHY2;
3702 break;
3703 }
3704 }
3705
3706 return sel_phy_idx;
3707
3708 }
3709 int bnx2x_get_link_cfg_idx(struct bnx2x *bp)
3710 {
3711 u32 sel_phy_idx = bnx2x_get_cur_phy_idx(bp);
3712 /*
3713 * The selected actived PHY is always after swapping (in case PHY
3714 * swapping is enabled). So when swapping is enabled, we need to reverse
3715 * the configuration
3716 */
3717
3718 if (bp->link_params.multi_phy_config &
3719 PORT_HW_CFG_PHY_SWAPPED_ENABLED) {
3720 if (sel_phy_idx == EXT_PHY1)
3721 sel_phy_idx = EXT_PHY2;
3722 else if (sel_phy_idx == EXT_PHY2)
3723 sel_phy_idx = EXT_PHY1;
3724 }
3725 return LINK_CONFIG_IDX(sel_phy_idx);
3726 }
3727
3728 #if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
3729 int bnx2x_fcoe_get_wwn(struct net_device *dev, u64 *wwn, int type)
3730 {
3731 struct bnx2x *bp = netdev_priv(dev);
3732 struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
3733
3734 switch (type) {
3735 case NETDEV_FCOE_WWNN:
3736 *wwn = HILO_U64(cp->fcoe_wwn_node_name_hi,
3737 cp->fcoe_wwn_node_name_lo);
3738 break;
3739 case NETDEV_FCOE_WWPN:
3740 *wwn = HILO_U64(cp->fcoe_wwn_port_name_hi,
3741 cp->fcoe_wwn_port_name_lo);
3742 break;
3743 default:
3744 BNX2X_ERR("Wrong WWN type requested - %d\n", type);
3745 return -EINVAL;
3746 }
3747
3748 return 0;
3749 }
3750 #endif
3751
3752 /* called with rtnl_lock */
3753 int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
3754 {
3755 struct bnx2x *bp = netdev_priv(dev);
3756
3757 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3758 BNX2X_ERR("Can't perform change MTU during parity recovery\n");
3759 return -EAGAIN;
3760 }
3761
3762 if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
3763 ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) {
3764 BNX2X_ERR("Can't support requested MTU size\n");
3765 return -EINVAL;
3766 }
3767
3768 /* This does not race with packet allocation
3769 * because the actual alloc size is
3770 * only updated as part of load
3771 */
3772 dev->mtu = new_mtu;
3773
3774 return bnx2x_reload_if_running(dev);
3775 }
3776
3777 netdev_features_t bnx2x_fix_features(struct net_device *dev,
3778 netdev_features_t features)
3779 {
3780 struct bnx2x *bp = netdev_priv(dev);
3781
3782 /* TPA requires Rx CSUM offloading */
3783 if (!(features & NETIF_F_RXCSUM) || bp->disable_tpa) {
3784 features &= ~NETIF_F_LRO;
3785 features &= ~NETIF_F_GRO;
3786 }
3787
3788 return features;
3789 }
3790
3791 int bnx2x_set_features(struct net_device *dev, netdev_features_t features)
3792 {
3793 struct bnx2x *bp = netdev_priv(dev);
3794 u32 flags = bp->flags;
3795 bool bnx2x_reload = false;
3796
3797 if (features & NETIF_F_LRO)
3798 flags |= TPA_ENABLE_FLAG;
3799 else
3800 flags &= ~TPA_ENABLE_FLAG;
3801
3802 if (features & NETIF_F_GRO)
3803 flags |= GRO_ENABLE_FLAG;
3804 else
3805 flags &= ~GRO_ENABLE_FLAG;
3806
3807 if (features & NETIF_F_LOOPBACK) {
3808 if (bp->link_params.loopback_mode != LOOPBACK_BMAC) {
3809 bp->link_params.loopback_mode = LOOPBACK_BMAC;
3810 bnx2x_reload = true;
3811 }
3812 } else {
3813 if (bp->link_params.loopback_mode != LOOPBACK_NONE) {
3814 bp->link_params.loopback_mode = LOOPBACK_NONE;
3815 bnx2x_reload = true;
3816 }
3817 }
3818
3819 if (flags ^ bp->flags) {
3820 bp->flags = flags;
3821 bnx2x_reload = true;
3822 }
3823
3824 if (bnx2x_reload) {
3825 if (bp->recovery_state == BNX2X_RECOVERY_DONE)
3826 return bnx2x_reload_if_running(dev);
3827 /* else: bnx2x_nic_load() will be called at end of recovery */
3828 }
3829
3830 return 0;
3831 }
3832
3833 void bnx2x_tx_timeout(struct net_device *dev)
3834 {
3835 struct bnx2x *bp = netdev_priv(dev);
3836
3837 #ifdef BNX2X_STOP_ON_ERROR
3838 if (!bp->panic)
3839 bnx2x_panic();
3840 #endif
3841
3842 smp_mb__before_clear_bit();
3843 set_bit(BNX2X_SP_RTNL_TX_TIMEOUT, &bp->sp_rtnl_state);
3844 smp_mb__after_clear_bit();
3845
3846 /* This allows the netif to be shutdown gracefully before resetting */
3847 schedule_delayed_work(&bp->sp_rtnl_task, 0);
3848 }
3849
3850 int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state)
3851 {
3852 struct net_device *dev = pci_get_drvdata(pdev);
3853 struct bnx2x *bp;
3854
3855 if (!dev) {
3856 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3857 return -ENODEV;
3858 }
3859 bp = netdev_priv(dev);
3860
3861 rtnl_lock();
3862
3863 pci_save_state(pdev);
3864
3865 if (!netif_running(dev)) {
3866 rtnl_unlock();
3867 return 0;
3868 }
3869
3870 netif_device_detach(dev);
3871
3872 bnx2x_nic_unload(bp, UNLOAD_CLOSE);
3873
3874 bnx2x_set_power_state(bp, pci_choose_state(pdev, state));
3875
3876 rtnl_unlock();
3877
3878 return 0;
3879 }
3880
3881 int bnx2x_resume(struct pci_dev *pdev)
3882 {
3883 struct net_device *dev = pci_get_drvdata(pdev);
3884 struct bnx2x *bp;
3885 int rc;
3886
3887 if (!dev) {
3888 dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n");
3889 return -ENODEV;
3890 }
3891 bp = netdev_priv(dev);
3892
3893 if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
3894 BNX2X_ERR("Handling parity error recovery. Try again later\n");
3895 return -EAGAIN;
3896 }
3897
3898 rtnl_lock();
3899
3900 pci_restore_state(pdev);
3901
3902 if (!netif_running(dev)) {
3903 rtnl_unlock();
3904 return 0;
3905 }
3906
3907 bnx2x_set_power_state(bp, PCI_D0);
3908 netif_device_attach(dev);
3909
3910 rc = bnx2x_nic_load(bp, LOAD_OPEN);
3911
3912 rtnl_unlock();
3913
3914 return rc;
3915 }
3916
3917
3918 void bnx2x_set_ctx_validation(struct bnx2x *bp, struct eth_context *cxt,
3919 u32 cid)
3920 {
3921 /* ustorm cxt validation */
3922 cxt->ustorm_ag_context.cdu_usage =
3923 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3924 CDU_REGION_NUMBER_UCM_AG, ETH_CONNECTION_TYPE);
3925 /* xcontext validation */
3926 cxt->xstorm_ag_context.cdu_reserved =
3927 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp, cid),
3928 CDU_REGION_NUMBER_XCM_AG, ETH_CONNECTION_TYPE);
3929 }
3930
3931 static void storm_memset_hc_timeout(struct bnx2x *bp, u8 port,
3932 u8 fw_sb_id, u8 sb_index,
3933 u8 ticks)
3934 {
3935
3936 u32 addr = BAR_CSTRORM_INTMEM +
3937 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id, sb_index);
3938 REG_WR8(bp, addr, ticks);
3939 DP(NETIF_MSG_IFUP,
3940 "port %x fw_sb_id %d sb_index %d ticks %d\n",
3941 port, fw_sb_id, sb_index, ticks);
3942 }
3943
3944 static void storm_memset_hc_disable(struct bnx2x *bp, u8 port,
3945 u16 fw_sb_id, u8 sb_index,
3946 u8 disable)
3947 {
3948 u32 enable_flag = disable ? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT);
3949 u32 addr = BAR_CSTRORM_INTMEM +
3950 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id, sb_index);
3951 u16 flags = REG_RD16(bp, addr);
3952 /* clear and set */
3953 flags &= ~HC_INDEX_DATA_HC_ENABLED;
3954 flags |= enable_flag;
3955 REG_WR16(bp, addr, flags);
3956 DP(NETIF_MSG_IFUP,
3957 "port %x fw_sb_id %d sb_index %d disable %d\n",
3958 port, fw_sb_id, sb_index, disable);
3959 }
3960
3961 void bnx2x_update_coalesce_sb_index(struct bnx2x *bp, u8 fw_sb_id,
3962 u8 sb_index, u8 disable, u16 usec)
3963 {
3964 int port = BP_PORT(bp);
3965 u8 ticks = usec / BNX2X_BTR;
3966
3967 storm_memset_hc_timeout(bp, port, fw_sb_id, sb_index, ticks);
3968
3969 disable = disable ? 1 : (usec ? 0 : 1);
3970 storm_memset_hc_disable(bp, port, fw_sb_id, sb_index, disable);
3971 }
Linux kernel - Deliverables
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