1 /* bnx2x_cmn.c: Broadcom Everest network driver.
3 * Copyright (c) 2007-2011 Broadcom Corporation
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.
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
18 #include <linux/etherdevice.h>
19 #include <linux/if_vlan.h>
20 #include <linux/interrupt.h>
23 #include <net/ip6_checksum.h>
24 #include <linux/firmware.h>
25 #include <linux/prefetch.h>
26 #include "bnx2x_cmn.h"
27 #include "bnx2x_init.h"
33 * bnx2x_bz_fp - zero content of the fastpath structure.
36 * @index: fastpath index to be zeroed
38 * Makes sure the contents of the bp->fp[index].napi is kept
41 static inline void bnx2x_bz_fp(struct bnx2x
*bp
, int index
)
43 struct bnx2x_fastpath
*fp
= &bp
->fp
[index
];
44 struct napi_struct orig_napi
= fp
->napi
;
45 /* bzero bnx2x_fastpath contents */
46 memset(fp
, 0, sizeof(*fp
));
48 /* Restore the NAPI object as it has been already initialized */
54 fp
->max_cos
= bp
->max_cos
;
56 /* Special queues support only one CoS */
60 * set the tpa flag for each queue. The tpa flag determines the queue
61 * minimal size so it must be set prior to queue memory allocation
63 fp
->disable_tpa
= ((bp
->flags
& TPA_ENABLE_FLAG
) == 0);
66 /* We don't want TPA on an FCoE L2 ring */
73 * bnx2x_move_fp - move content of the fastpath structure.
76 * @from: source FP index
77 * @to: destination FP index
79 * Makes sure the contents of the bp->fp[to].napi is kept
82 static inline void bnx2x_move_fp(struct bnx2x
*bp
, int from
, int to
)
84 struct bnx2x_fastpath
*from_fp
= &bp
->fp
[from
];
85 struct bnx2x_fastpath
*to_fp
= &bp
->fp
[to
];
86 struct napi_struct orig_napi
= to_fp
->napi
;
87 /* Move bnx2x_fastpath contents */
88 memcpy(to_fp
, from_fp
, sizeof(*to_fp
));
91 /* Restore the NAPI object as it has been already initialized */
92 to_fp
->napi
= orig_napi
;
95 int load_count
[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
97 /* free skb in the packet ring at pos idx
98 * return idx of last bd freed
100 static u16
bnx2x_free_tx_pkt(struct bnx2x
*bp
, struct bnx2x_fp_txdata
*txdata
,
103 struct sw_tx_bd
*tx_buf
= &txdata
->tx_buf_ring
[idx
];
104 struct eth_tx_start_bd
*tx_start_bd
;
105 struct eth_tx_bd
*tx_data_bd
;
106 struct sk_buff
*skb
= tx_buf
->skb
;
107 u16 bd_idx
= TX_BD(tx_buf
->first_bd
), new_cons
;
110 /* prefetch skb end pointer to speedup dev_kfree_skb() */
113 DP(BNX2X_MSG_FP
, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
114 txdata
->txq_index
, idx
, tx_buf
, skb
);
117 DP(BNX2X_MSG_OFF
, "free bd_idx %d\n", bd_idx
);
118 tx_start_bd
= &txdata
->tx_desc_ring
[bd_idx
].start_bd
;
119 dma_unmap_single(&bp
->pdev
->dev
, BD_UNMAP_ADDR(tx_start_bd
),
120 BD_UNMAP_LEN(tx_start_bd
), DMA_TO_DEVICE
);
123 nbd
= le16_to_cpu(tx_start_bd
->nbd
) - 1;
124 #ifdef BNX2X_STOP_ON_ERROR
125 if ((nbd
- 1) > (MAX_SKB_FRAGS
+ 2)) {
126 BNX2X_ERR("BAD nbd!\n");
130 new_cons
= nbd
+ tx_buf
->first_bd
;
132 /* Get the next bd */
133 bd_idx
= TX_BD(NEXT_TX_IDX(bd_idx
));
135 /* Skip a parse bd... */
137 bd_idx
= TX_BD(NEXT_TX_IDX(bd_idx
));
139 /* ...and the TSO split header bd since they have no mapping */
140 if (tx_buf
->flags
& BNX2X_TSO_SPLIT_BD
) {
142 bd_idx
= TX_BD(NEXT_TX_IDX(bd_idx
));
148 DP(BNX2X_MSG_OFF
, "free frag bd_idx %d\n", bd_idx
);
149 tx_data_bd
= &txdata
->tx_desc_ring
[bd_idx
].reg_bd
;
150 dma_unmap_page(&bp
->pdev
->dev
, BD_UNMAP_ADDR(tx_data_bd
),
151 BD_UNMAP_LEN(tx_data_bd
), DMA_TO_DEVICE
);
153 bd_idx
= TX_BD(NEXT_TX_IDX(bd_idx
));
158 dev_kfree_skb_any(skb
);
159 tx_buf
->first_bd
= 0;
165 int bnx2x_tx_int(struct bnx2x
*bp
, struct bnx2x_fp_txdata
*txdata
)
167 struct netdev_queue
*txq
;
168 u16 hw_cons
, sw_cons
, bd_cons
= txdata
->tx_bd_cons
;
170 #ifdef BNX2X_STOP_ON_ERROR
171 if (unlikely(bp
->panic
))
175 txq
= netdev_get_tx_queue(bp
->dev
, txdata
->txq_index
);
176 hw_cons
= le16_to_cpu(*txdata
->tx_cons_sb
);
177 sw_cons
= txdata
->tx_pkt_cons
;
179 while (sw_cons
!= hw_cons
) {
182 pkt_cons
= TX_BD(sw_cons
);
184 DP(NETIF_MSG_TX_DONE
, "queue[%d]: hw_cons %u sw_cons %u "
186 txdata
->txq_index
, hw_cons
, sw_cons
, pkt_cons
);
188 bd_cons
= bnx2x_free_tx_pkt(bp
, txdata
, pkt_cons
);
192 txdata
->tx_pkt_cons
= sw_cons
;
193 txdata
->tx_bd_cons
= bd_cons
;
195 /* Need to make the tx_bd_cons update visible to start_xmit()
196 * before checking for netif_tx_queue_stopped(). Without the
197 * memory barrier, there is a small possibility that
198 * start_xmit() will miss it and cause the queue to be stopped
200 * On the other hand we need an rmb() here to ensure the proper
201 * ordering of bit testing in the following
202 * netif_tx_queue_stopped(txq) call.
206 if (unlikely(netif_tx_queue_stopped(txq
))) {
207 /* Taking tx_lock() is needed to prevent reenabling the queue
208 * while it's empty. This could have happen if rx_action() gets
209 * suspended in bnx2x_tx_int() after the condition before
210 * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
212 * stops the queue->sees fresh tx_bd_cons->releases the queue->
213 * sends some packets consuming the whole queue again->
217 __netif_tx_lock(txq
, smp_processor_id());
219 if ((netif_tx_queue_stopped(txq
)) &&
220 (bp
->state
== BNX2X_STATE_OPEN
) &&
221 (bnx2x_tx_avail(bp
, txdata
) >= MAX_SKB_FRAGS
+ 3))
222 netif_tx_wake_queue(txq
);
224 __netif_tx_unlock(txq
);
229 static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath
*fp
,
232 u16 last_max
= fp
->last_max_sge
;
234 if (SUB_S16(idx
, last_max
) > 0)
235 fp
->last_max_sge
= idx
;
238 static void bnx2x_update_sge_prod(struct bnx2x_fastpath
*fp
,
239 struct eth_fast_path_rx_cqe
*fp_cqe
)
241 struct bnx2x
*bp
= fp
->bp
;
242 u16 sge_len
= SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe
->pkt_len
) -
243 le16_to_cpu(fp_cqe
->len_on_bd
)) >>
245 u16 last_max
, last_elem
, first_elem
;
252 /* First mark all used pages */
253 for (i
= 0; i
< sge_len
; i
++)
254 BIT_VEC64_CLEAR_BIT(fp
->sge_mask
,
255 RX_SGE(le16_to_cpu(fp_cqe
->sgl_or_raw_data
.sgl
[i
])));
257 DP(NETIF_MSG_RX_STATUS
, "fp_cqe->sgl[%d] = %d\n",
258 sge_len
- 1, le16_to_cpu(fp_cqe
->sgl_or_raw_data
.sgl
[sge_len
- 1]));
260 /* Here we assume that the last SGE index is the biggest */
261 prefetch((void *)(fp
->sge_mask
));
262 bnx2x_update_last_max_sge(fp
,
263 le16_to_cpu(fp_cqe
->sgl_or_raw_data
.sgl
[sge_len
- 1]));
265 last_max
= RX_SGE(fp
->last_max_sge
);
266 last_elem
= last_max
>> BIT_VEC64_ELEM_SHIFT
;
267 first_elem
= RX_SGE(fp
->rx_sge_prod
) >> BIT_VEC64_ELEM_SHIFT
;
269 /* If ring is not full */
270 if (last_elem
+ 1 != first_elem
)
273 /* Now update the prod */
274 for (i
= first_elem
; i
!= last_elem
; i
= NEXT_SGE_MASK_ELEM(i
)) {
275 if (likely(fp
->sge_mask
[i
]))
278 fp
->sge_mask
[i
] = BIT_VEC64_ELEM_ONE_MASK
;
279 delta
+= BIT_VEC64_ELEM_SZ
;
283 fp
->rx_sge_prod
+= delta
;
284 /* clear page-end entries */
285 bnx2x_clear_sge_mask_next_elems(fp
);
288 DP(NETIF_MSG_RX_STATUS
,
289 "fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
290 fp
->last_max_sge
, fp
->rx_sge_prod
);
293 static void bnx2x_tpa_start(struct bnx2x_fastpath
*fp
, u16 queue
,
294 struct sk_buff
*skb
, u16 cons
, u16 prod
,
295 struct eth_fast_path_rx_cqe
*cqe
)
297 struct bnx2x
*bp
= fp
->bp
;
298 struct sw_rx_bd
*cons_rx_buf
= &fp
->rx_buf_ring
[cons
];
299 struct sw_rx_bd
*prod_rx_buf
= &fp
->rx_buf_ring
[prod
];
300 struct eth_rx_bd
*prod_bd
= &fp
->rx_desc_ring
[prod
];
302 struct bnx2x_agg_info
*tpa_info
= &fp
->tpa_info
[queue
];
303 struct sw_rx_bd
*first_buf
= &tpa_info
->first_buf
;
305 /* print error if current state != stop */
306 if (tpa_info
->tpa_state
!= BNX2X_TPA_STOP
)
307 BNX2X_ERR("start of bin not in stop [%d]\n", queue
);
309 /* Try to map an empty skb from the aggregation info */
310 mapping
= dma_map_single(&bp
->pdev
->dev
,
311 first_buf
->skb
->data
,
312 fp
->rx_buf_size
, DMA_FROM_DEVICE
);
314 * ...if it fails - move the skb from the consumer to the producer
315 * and set the current aggregation state as ERROR to drop it
316 * when TPA_STOP arrives.
319 if (unlikely(dma_mapping_error(&bp
->pdev
->dev
, mapping
))) {
320 /* Move the BD from the consumer to the producer */
321 bnx2x_reuse_rx_skb(fp
, cons
, prod
);
322 tpa_info
->tpa_state
= BNX2X_TPA_ERROR
;
326 /* move empty skb from pool to prod */
327 prod_rx_buf
->skb
= first_buf
->skb
;
328 dma_unmap_addr_set(prod_rx_buf
, mapping
, mapping
);
329 /* point prod_bd to new skb */
330 prod_bd
->addr_hi
= cpu_to_le32(U64_HI(mapping
));
331 prod_bd
->addr_lo
= cpu_to_le32(U64_LO(mapping
));
333 /* move partial skb from cons to pool (don't unmap yet) */
334 *first_buf
= *cons_rx_buf
;
336 /* mark bin state as START */
337 tpa_info
->parsing_flags
=
338 le16_to_cpu(cqe
->pars_flags
.flags
);
339 tpa_info
->vlan_tag
= le16_to_cpu(cqe
->vlan_tag
);
340 tpa_info
->tpa_state
= BNX2X_TPA_START
;
341 tpa_info
->len_on_bd
= le16_to_cpu(cqe
->len_on_bd
);
342 tpa_info
->placement_offset
= cqe
->placement_offset
;
344 #ifdef BNX2X_STOP_ON_ERROR
345 fp
->tpa_queue_used
|= (1 << queue
);
346 #ifdef _ASM_GENERIC_INT_L64_H
347 DP(NETIF_MSG_RX_STATUS
, "fp->tpa_queue_used = 0x%lx\n",
349 DP(NETIF_MSG_RX_STATUS
, "fp->tpa_queue_used = 0x%llx\n",
355 /* Timestamp option length allowed for TPA aggregation:
357 * nop nop kind length echo val
359 #define TPA_TSTAMP_OPT_LEN 12
361 * bnx2x_set_lro_mss - calculate the approximate value of the MSS
364 * @parsing_flags: parsing flags from the START CQE
365 * @len_on_bd: total length of the first packet for the
368 * Approximate value of the MSS for this aggregation calculated using
369 * the first packet of it.
371 static inline u16
bnx2x_set_lro_mss(struct bnx2x
*bp
, u16 parsing_flags
,
375 * TPA arrgregation won't have either IP options or TCP options
376 * other than timestamp or IPv6 extension headers.
378 u16 hdrs_len
= ETH_HLEN
+ sizeof(struct tcphdr
);
380 if (GET_FLAG(parsing_flags
, PARSING_FLAGS_OVER_ETHERNET_PROTOCOL
) ==
381 PRS_FLAG_OVERETH_IPV6
)
382 hdrs_len
+= sizeof(struct ipv6hdr
);
384 hdrs_len
+= sizeof(struct iphdr
);
387 /* Check if there was a TCP timestamp, if there is it's will
388 * always be 12 bytes length: nop nop kind length echo val.
390 * Otherwise FW would close the aggregation.
392 if (parsing_flags
& PARSING_FLAGS_TIME_STAMP_EXIST_FLAG
)
393 hdrs_len
+= TPA_TSTAMP_OPT_LEN
;
395 return len_on_bd
- hdrs_len
;
398 static int bnx2x_fill_frag_skb(struct bnx2x
*bp
, struct bnx2x_fastpath
*fp
,
399 u16 queue
, struct sk_buff
*skb
,
400 struct eth_end_agg_rx_cqe
*cqe
,
403 struct sw_rx_page
*rx_pg
, old_rx_pg
;
404 u32 i
, frag_len
, frag_size
, pages
;
407 struct bnx2x_agg_info
*tpa_info
= &fp
->tpa_info
[queue
];
408 u16 len_on_bd
= tpa_info
->len_on_bd
;
410 frag_size
= le16_to_cpu(cqe
->pkt_len
) - len_on_bd
;
411 pages
= SGE_PAGE_ALIGN(frag_size
) >> SGE_PAGE_SHIFT
;
413 /* This is needed in order to enable forwarding support */
415 skb_shinfo(skb
)->gso_size
= bnx2x_set_lro_mss(bp
,
416 tpa_info
->parsing_flags
, len_on_bd
);
418 #ifdef BNX2X_STOP_ON_ERROR
419 if (pages
> min_t(u32
, 8, MAX_SKB_FRAGS
)*SGE_PAGE_SIZE
*PAGES_PER_SGE
) {
420 BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
422 BNX2X_ERR("cqe->pkt_len = %d\n", cqe
->pkt_len
);
428 /* Run through the SGL and compose the fragmented skb */
429 for (i
= 0, j
= 0; i
< pages
; i
+= PAGES_PER_SGE
, j
++) {
430 u16 sge_idx
= RX_SGE(le16_to_cpu(cqe
->sgl_or_raw_data
.sgl
[j
]));
432 /* FW gives the indices of the SGE as if the ring is an array
433 (meaning that "next" element will consume 2 indices) */
434 frag_len
= min(frag_size
, (u32
)(SGE_PAGE_SIZE
*PAGES_PER_SGE
));
435 rx_pg
= &fp
->rx_page_ring
[sge_idx
];
438 /* If we fail to allocate a substitute page, we simply stop
439 where we are and drop the whole packet */
440 err
= bnx2x_alloc_rx_sge(bp
, fp
, sge_idx
);
442 fp
->eth_q_stats
.rx_skb_alloc_failed
++;
446 /* Unmap the page as we r going to pass it to the stack */
447 dma_unmap_page(&bp
->pdev
->dev
,
448 dma_unmap_addr(&old_rx_pg
, mapping
),
449 SGE_PAGE_SIZE
*PAGES_PER_SGE
, DMA_FROM_DEVICE
);
451 /* Add one frag and update the appropriate fields in the skb */
452 skb_fill_page_desc(skb
, j
, old_rx_pg
.page
, 0, frag_len
);
454 skb
->data_len
+= frag_len
;
455 skb
->truesize
+= frag_len
;
456 skb
->len
+= frag_len
;
458 frag_size
-= frag_len
;
464 static void bnx2x_tpa_stop(struct bnx2x
*bp
, struct bnx2x_fastpath
*fp
,
465 u16 queue
, struct eth_end_agg_rx_cqe
*cqe
,
468 struct bnx2x_agg_info
*tpa_info
= &fp
->tpa_info
[queue
];
469 struct sw_rx_bd
*rx_buf
= &tpa_info
->first_buf
;
470 u8 pad
= tpa_info
->placement_offset
;
471 u16 len
= tpa_info
->len_on_bd
;
472 struct sk_buff
*skb
= rx_buf
->skb
;
474 struct sk_buff
*new_skb
;
475 u8 old_tpa_state
= tpa_info
->tpa_state
;
477 tpa_info
->tpa_state
= BNX2X_TPA_STOP
;
479 /* If we there was an error during the handling of the TPA_START -
480 * drop this aggregation.
482 if (old_tpa_state
== BNX2X_TPA_ERROR
)
485 /* Try to allocate the new skb */
486 new_skb
= netdev_alloc_skb(bp
->dev
, fp
->rx_buf_size
);
488 /* Unmap skb in the pool anyway, as we are going to change
489 pool entry status to BNX2X_TPA_STOP even if new skb allocation
491 dma_unmap_single(&bp
->pdev
->dev
, dma_unmap_addr(rx_buf
, mapping
),
492 fp
->rx_buf_size
, DMA_FROM_DEVICE
);
494 if (likely(new_skb
)) {
496 prefetch(((char *)(skb
)) + L1_CACHE_BYTES
);
498 #ifdef BNX2X_STOP_ON_ERROR
499 if (pad
+ len
> fp
->rx_buf_size
) {
500 BNX2X_ERR("skb_put is about to fail... "
501 "pad %d len %d rx_buf_size %d\n",
502 pad
, len
, fp
->rx_buf_size
);
508 skb_reserve(skb
, pad
);
511 skb
->protocol
= eth_type_trans(skb
, bp
->dev
);
512 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
514 if (!bnx2x_fill_frag_skb(bp
, fp
, queue
, skb
, cqe
, cqe_idx
)) {
515 if (tpa_info
->parsing_flags
& PARSING_FLAGS_VLAN
)
516 __vlan_hwaccel_put_tag(skb
, tpa_info
->vlan_tag
);
517 napi_gro_receive(&fp
->napi
, skb
);
519 DP(NETIF_MSG_RX_STATUS
, "Failed to allocate new pages"
520 " - dropping packet!\n");
521 dev_kfree_skb_any(skb
);
525 /* put new skb in bin */
526 rx_buf
->skb
= new_skb
;
532 /* drop the packet and keep the buffer in the bin */
533 DP(NETIF_MSG_RX_STATUS
,
534 "Failed to allocate or map a new skb - dropping packet!\n");
535 fp
->eth_q_stats
.rx_skb_alloc_failed
++;
538 /* Set Toeplitz hash value in the skb using the value from the
539 * CQE (calculated by HW).
541 static inline void bnx2x_set_skb_rxhash(struct bnx2x
*bp
, union eth_rx_cqe
*cqe
,
544 /* Set Toeplitz hash from CQE */
545 if ((bp
->dev
->features
& NETIF_F_RXHASH
) &&
546 (cqe
->fast_path_cqe
.status_flags
&
547 ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG
))
549 le32_to_cpu(cqe
->fast_path_cqe
.rss_hash_result
);
552 int bnx2x_rx_int(struct bnx2x_fastpath
*fp
, int budget
)
554 struct bnx2x
*bp
= fp
->bp
;
555 u16 bd_cons
, bd_prod
, bd_prod_fw
, comp_ring_cons
;
556 u16 hw_comp_cons
, sw_comp_cons
, sw_comp_prod
;
559 #ifdef BNX2X_STOP_ON_ERROR
560 if (unlikely(bp
->panic
))
564 /* CQ "next element" is of the size of the regular element,
565 that's why it's ok here */
566 hw_comp_cons
= le16_to_cpu(*fp
->rx_cons_sb
);
567 if ((hw_comp_cons
& MAX_RCQ_DESC_CNT
) == MAX_RCQ_DESC_CNT
)
570 bd_cons
= fp
->rx_bd_cons
;
571 bd_prod
= fp
->rx_bd_prod
;
572 bd_prod_fw
= bd_prod
;
573 sw_comp_cons
= fp
->rx_comp_cons
;
574 sw_comp_prod
= fp
->rx_comp_prod
;
576 /* Memory barrier necessary as speculative reads of the rx
577 * buffer can be ahead of the index in the status block
581 DP(NETIF_MSG_RX_STATUS
,
582 "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n",
583 fp
->index
, hw_comp_cons
, sw_comp_cons
);
585 while (sw_comp_cons
!= hw_comp_cons
) {
586 struct sw_rx_bd
*rx_buf
= NULL
;
588 union eth_rx_cqe
*cqe
;
589 struct eth_fast_path_rx_cqe
*cqe_fp
;
591 enum eth_rx_cqe_type cqe_fp_type
;
594 #ifdef BNX2X_STOP_ON_ERROR
595 if (unlikely(bp
->panic
))
599 comp_ring_cons
= RCQ_BD(sw_comp_cons
);
600 bd_prod
= RX_BD(bd_prod
);
601 bd_cons
= RX_BD(bd_cons
);
603 /* Prefetch the page containing the BD descriptor
604 at producer's index. It will be needed when new skb is
606 prefetch((void *)(PAGE_ALIGN((unsigned long)
607 (&fp
->rx_desc_ring
[bd_prod
])) -
610 cqe
= &fp
->rx_comp_ring
[comp_ring_cons
];
611 cqe_fp
= &cqe
->fast_path_cqe
;
612 cqe_fp_flags
= cqe_fp
->type_error_flags
;
613 cqe_fp_type
= cqe_fp_flags
& ETH_FAST_PATH_RX_CQE_TYPE
;
615 DP(NETIF_MSG_RX_STATUS
, "CQE type %x err %x status %x"
616 " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags
),
617 cqe_fp_flags
, cqe_fp
->status_flags
,
618 le32_to_cpu(cqe_fp
->rss_hash_result
),
619 le16_to_cpu(cqe_fp
->vlan_tag
), le16_to_cpu(cqe_fp
->pkt_len
));
621 /* is this a slowpath msg? */
622 if (unlikely(CQE_TYPE_SLOW(cqe_fp_type
))) {
623 bnx2x_sp_event(fp
, cqe
);
626 /* this is an rx packet */
628 rx_buf
= &fp
->rx_buf_ring
[bd_cons
];
632 if (!CQE_TYPE_FAST(cqe_fp_type
)) {
633 #ifdef BNX2X_STOP_ON_ERROR
635 if (fp
->disable_tpa
&&
636 (CQE_TYPE_START(cqe_fp_type
) ||
637 CQE_TYPE_STOP(cqe_fp_type
)))
638 BNX2X_ERR("START/STOP packet while "
639 "disable_tpa type %x\n",
640 CQE_TYPE(cqe_fp_type
));
643 if (CQE_TYPE_START(cqe_fp_type
)) {
644 u16 queue
= cqe_fp
->queue_index
;
645 DP(NETIF_MSG_RX_STATUS
,
646 "calling tpa_start on queue %d\n",
649 bnx2x_tpa_start(fp
, queue
, skb
,
653 /* Set Toeplitz hash for LRO skb */
654 bnx2x_set_skb_rxhash(bp
, cqe
, skb
);
660 cqe
->end_agg_cqe
.queue_index
;
661 DP(NETIF_MSG_RX_STATUS
,
662 "calling tpa_stop on queue %d\n",
665 bnx2x_tpa_stop(bp
, fp
, queue
,
668 #ifdef BNX2X_STOP_ON_ERROR
673 bnx2x_update_sge_prod(fp
, cqe_fp
);
678 len
= le16_to_cpu(cqe_fp
->pkt_len
);
679 pad
= cqe_fp
->placement_offset
;
680 dma_sync_single_for_cpu(&bp
->pdev
->dev
,
681 dma_unmap_addr(rx_buf
, mapping
),
682 pad
+ RX_COPY_THRESH
,
684 prefetch(((char *)(skb
)) + L1_CACHE_BYTES
);
686 /* is this an error packet? */
687 if (unlikely(cqe_fp_flags
& ETH_RX_ERROR_FALGS
)) {
689 "ERROR flags %x rx packet %u\n",
690 cqe_fp_flags
, sw_comp_cons
);
691 fp
->eth_q_stats
.rx_err_discard_pkt
++;
695 /* Since we don't have a jumbo ring
696 * copy small packets if mtu > 1500
698 if ((bp
->dev
->mtu
> ETH_MAX_PACKET_SIZE
) &&
699 (len
<= RX_COPY_THRESH
)) {
700 struct sk_buff
*new_skb
;
702 new_skb
= netdev_alloc_skb(bp
->dev
, len
+ pad
);
703 if (new_skb
== NULL
) {
705 "ERROR packet dropped "
706 "because of alloc failure\n");
707 fp
->eth_q_stats
.rx_skb_alloc_failed
++;
712 skb_copy_from_linear_data_offset(skb
, pad
,
713 new_skb
->data
+ pad
, len
);
714 skb_reserve(new_skb
, pad
);
715 skb_put(new_skb
, len
);
717 bnx2x_reuse_rx_skb(fp
, bd_cons
, bd_prod
);
722 if (likely(bnx2x_alloc_rx_skb(bp
, fp
, bd_prod
) == 0)) {
723 dma_unmap_single(&bp
->pdev
->dev
,
724 dma_unmap_addr(rx_buf
, mapping
),
727 skb_reserve(skb
, pad
);
732 "ERROR packet dropped because "
733 "of alloc failure\n");
734 fp
->eth_q_stats
.rx_skb_alloc_failed
++;
736 bnx2x_reuse_rx_skb(fp
, bd_cons
, bd_prod
);
740 skb
->protocol
= eth_type_trans(skb
, bp
->dev
);
742 /* Set Toeplitz hash for a none-LRO skb */
743 bnx2x_set_skb_rxhash(bp
, cqe
, skb
);
745 skb_checksum_none_assert(skb
);
747 if (bp
->dev
->features
& NETIF_F_RXCSUM
) {
749 if (likely(BNX2X_RX_CSUM_OK(cqe
)))
750 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
752 fp
->eth_q_stats
.hw_csum_err
++;
756 skb_record_rx_queue(skb
, fp
->index
);
758 if (le16_to_cpu(cqe_fp
->pars_flags
.flags
) &
760 __vlan_hwaccel_put_tag(skb
,
761 le16_to_cpu(cqe_fp
->vlan_tag
));
762 napi_gro_receive(&fp
->napi
, skb
);
768 bd_cons
= NEXT_RX_IDX(bd_cons
);
769 bd_prod
= NEXT_RX_IDX(bd_prod
);
770 bd_prod_fw
= NEXT_RX_IDX(bd_prod_fw
);
773 sw_comp_prod
= NEXT_RCQ_IDX(sw_comp_prod
);
774 sw_comp_cons
= NEXT_RCQ_IDX(sw_comp_cons
);
776 if (rx_pkt
== budget
)
780 fp
->rx_bd_cons
= bd_cons
;
781 fp
->rx_bd_prod
= bd_prod_fw
;
782 fp
->rx_comp_cons
= sw_comp_cons
;
783 fp
->rx_comp_prod
= sw_comp_prod
;
785 /* Update producers */
786 bnx2x_update_rx_prod(bp
, fp
, bd_prod_fw
, sw_comp_prod
,
789 fp
->rx_pkt
+= rx_pkt
;
795 static irqreturn_t
bnx2x_msix_fp_int(int irq
, void *fp_cookie
)
797 struct bnx2x_fastpath
*fp
= fp_cookie
;
798 struct bnx2x
*bp
= fp
->bp
;
801 DP(BNX2X_MSG_FP
, "got an MSI-X interrupt on IDX:SB "
802 "[fp %d fw_sd %d igusb %d]\n",
803 fp
->index
, fp
->fw_sb_id
, fp
->igu_sb_id
);
804 bnx2x_ack_sb(bp
, fp
->igu_sb_id
, USTORM_ID
, 0, IGU_INT_DISABLE
, 0);
806 #ifdef BNX2X_STOP_ON_ERROR
807 if (unlikely(bp
->panic
))
811 /* Handle Rx and Tx according to MSI-X vector */
812 prefetch(fp
->rx_cons_sb
);
814 for_each_cos_in_tx_queue(fp
, cos
)
815 prefetch(fp
->txdata
[cos
].tx_cons_sb
);
817 prefetch(&fp
->sb_running_index
[SM_RX_ID
]);
818 napi_schedule(&bnx2x_fp(bp
, fp
->index
, napi
));
823 /* HW Lock for shared dual port PHYs */
824 void bnx2x_acquire_phy_lock(struct bnx2x
*bp
)
826 mutex_lock(&bp
->port
.phy_mutex
);
828 if (bp
->port
.need_hw_lock
)
829 bnx2x_acquire_hw_lock(bp
, HW_LOCK_RESOURCE_MDIO
);
832 void bnx2x_release_phy_lock(struct bnx2x
*bp
)
834 if (bp
->port
.need_hw_lock
)
835 bnx2x_release_hw_lock(bp
, HW_LOCK_RESOURCE_MDIO
);
837 mutex_unlock(&bp
->port
.phy_mutex
);
840 /* calculates MF speed according to current linespeed and MF configuration */
841 u16
bnx2x_get_mf_speed(struct bnx2x
*bp
)
843 u16 line_speed
= bp
->link_vars
.line_speed
;
845 u16 maxCfg
= bnx2x_extract_max_cfg(bp
,
846 bp
->mf_config
[BP_VN(bp
)]);
848 /* Calculate the current MAX line speed limit for the MF
852 line_speed
= (line_speed
* maxCfg
) / 100;
854 u16 vn_max_rate
= maxCfg
* 100;
856 if (vn_max_rate
< line_speed
)
857 line_speed
= vn_max_rate
;
865 * bnx2x_fill_report_data - fill link report data to report
868 * @data: link state to update
870 * It uses a none-atomic bit operations because is called under the mutex.
872 static inline void bnx2x_fill_report_data(struct bnx2x
*bp
,
873 struct bnx2x_link_report_data
*data
)
875 u16 line_speed
= bnx2x_get_mf_speed(bp
);
877 memset(data
, 0, sizeof(*data
));
879 /* Fill the report data: efective line speed */
880 data
->line_speed
= line_speed
;
883 if (!bp
->link_vars
.link_up
|| (bp
->flags
& MF_FUNC_DIS
))
884 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN
,
885 &data
->link_report_flags
);
888 if (bp
->link_vars
.duplex
== DUPLEX_FULL
)
889 __set_bit(BNX2X_LINK_REPORT_FD
, &data
->link_report_flags
);
891 /* Rx Flow Control is ON */
892 if (bp
->link_vars
.flow_ctrl
& BNX2X_FLOW_CTRL_RX
)
893 __set_bit(BNX2X_LINK_REPORT_RX_FC_ON
, &data
->link_report_flags
);
895 /* Tx Flow Control is ON */
896 if (bp
->link_vars
.flow_ctrl
& BNX2X_FLOW_CTRL_TX
)
897 __set_bit(BNX2X_LINK_REPORT_TX_FC_ON
, &data
->link_report_flags
);
901 * bnx2x_link_report - report link status to OS.
905 * Calls the __bnx2x_link_report() under the same locking scheme
906 * as a link/PHY state managing code to ensure a consistent link
910 void bnx2x_link_report(struct bnx2x
*bp
)
912 bnx2x_acquire_phy_lock(bp
);
913 __bnx2x_link_report(bp
);
914 bnx2x_release_phy_lock(bp
);
918 * __bnx2x_link_report - report link status to OS.
922 * None atomic inmlementation.
923 * Should be called under the phy_lock.
925 void __bnx2x_link_report(struct bnx2x
*bp
)
927 struct bnx2x_link_report_data cur_data
;
931 bnx2x_read_mf_cfg(bp
);
933 /* Read the current link report info */
934 bnx2x_fill_report_data(bp
, &cur_data
);
936 /* Don't report link down or exactly the same link status twice */
937 if (!memcmp(&cur_data
, &bp
->last_reported_link
, sizeof(cur_data
)) ||
938 (test_bit(BNX2X_LINK_REPORT_LINK_DOWN
,
939 &bp
->last_reported_link
.link_report_flags
) &&
940 test_bit(BNX2X_LINK_REPORT_LINK_DOWN
,
941 &cur_data
.link_report_flags
)))
946 /* We are going to report a new link parameters now -
947 * remember the current data for the next time.
949 memcpy(&bp
->last_reported_link
, &cur_data
, sizeof(cur_data
));
951 if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN
,
952 &cur_data
.link_report_flags
)) {
953 netif_carrier_off(bp
->dev
);
954 netdev_err(bp
->dev
, "NIC Link is Down\n");
957 netif_carrier_on(bp
->dev
);
958 netdev_info(bp
->dev
, "NIC Link is Up, ");
959 pr_cont("%d Mbps ", cur_data
.line_speed
);
961 if (test_and_clear_bit(BNX2X_LINK_REPORT_FD
,
962 &cur_data
.link_report_flags
))
963 pr_cont("full duplex");
965 pr_cont("half duplex");
967 /* Handle the FC at the end so that only these flags would be
968 * possibly set. This way we may easily check if there is no FC
971 if (cur_data
.link_report_flags
) {
972 if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON
,
973 &cur_data
.link_report_flags
)) {
974 pr_cont(", receive ");
975 if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON
,
976 &cur_data
.link_report_flags
))
977 pr_cont("& transmit ");
979 pr_cont(", transmit ");
981 pr_cont("flow control ON");
987 void bnx2x_init_rx_rings(struct bnx2x
*bp
)
989 int func
= BP_FUNC(bp
);
990 int max_agg_queues
= CHIP_IS_E1(bp
) ? ETH_MAX_AGGREGATION_QUEUES_E1
:
991 ETH_MAX_AGGREGATION_QUEUES_E1H_E2
;
995 /* Allocate TPA resources */
996 for_each_rx_queue(bp
, j
) {
997 struct bnx2x_fastpath
*fp
= &bp
->fp
[j
];
1000 "mtu %d rx_buf_size %d\n", bp
->dev
->mtu
, fp
->rx_buf_size
);
1002 if (!fp
->disable_tpa
) {
1003 /* Fill the per-aggregtion pool */
1004 for (i
= 0; i
< max_agg_queues
; i
++) {
1005 struct bnx2x_agg_info
*tpa_info
=
1007 struct sw_rx_bd
*first_buf
=
1008 &tpa_info
->first_buf
;
1010 first_buf
->skb
= netdev_alloc_skb(bp
->dev
,
1012 if (!first_buf
->skb
) {
1013 BNX2X_ERR("Failed to allocate TPA "
1014 "skb pool for queue[%d] - "
1015 "disabling TPA on this "
1017 bnx2x_free_tpa_pool(bp
, fp
, i
);
1018 fp
->disable_tpa
= 1;
1021 dma_unmap_addr_set(first_buf
, mapping
, 0);
1022 tpa_info
->tpa_state
= BNX2X_TPA_STOP
;
1025 /* "next page" elements initialization */
1026 bnx2x_set_next_page_sgl(fp
);
1028 /* set SGEs bit mask */
1029 bnx2x_init_sge_ring_bit_mask(fp
);
1031 /* Allocate SGEs and initialize the ring elements */
1032 for (i
= 0, ring_prod
= 0;
1033 i
< MAX_RX_SGE_CNT
*NUM_RX_SGE_PAGES
; i
++) {
1035 if (bnx2x_alloc_rx_sge(bp
, fp
, ring_prod
) < 0) {
1036 BNX2X_ERR("was only able to allocate "
1038 BNX2X_ERR("disabling TPA for "
1040 /* Cleanup already allocated elements */
1041 bnx2x_free_rx_sge_range(bp
, fp
,
1043 bnx2x_free_tpa_pool(bp
, fp
,
1045 fp
->disable_tpa
= 1;
1049 ring_prod
= NEXT_SGE_IDX(ring_prod
);
1052 fp
->rx_sge_prod
= ring_prod
;
1056 for_each_rx_queue(bp
, j
) {
1057 struct bnx2x_fastpath
*fp
= &bp
->fp
[j
];
1061 /* Activate BD ring */
1063 * this will generate an interrupt (to the TSTORM)
1064 * must only be done after chip is initialized
1066 bnx2x_update_rx_prod(bp
, fp
, fp
->rx_bd_prod
, fp
->rx_comp_prod
,
1072 if (CHIP_IS_E1(bp
)) {
1073 REG_WR(bp
, BAR_USTRORM_INTMEM
+
1074 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func
),
1075 U64_LO(fp
->rx_comp_mapping
));
1076 REG_WR(bp
, BAR_USTRORM_INTMEM
+
1077 USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func
) + 4,
1078 U64_HI(fp
->rx_comp_mapping
));
1083 static void bnx2x_free_tx_skbs(struct bnx2x
*bp
)
1088 for_each_tx_queue(bp
, i
) {
1089 struct bnx2x_fastpath
*fp
= &bp
->fp
[i
];
1090 for_each_cos_in_tx_queue(fp
, cos
) {
1091 struct bnx2x_fp_txdata
*txdata
= &fp
->txdata
[cos
];
1093 u16 bd_cons
= txdata
->tx_bd_cons
;
1094 u16 sw_prod
= txdata
->tx_pkt_prod
;
1095 u16 sw_cons
= txdata
->tx_pkt_cons
;
1097 while (sw_cons
!= sw_prod
) {
1098 bd_cons
= bnx2x_free_tx_pkt(bp
, txdata
,
1106 static void bnx2x_free_rx_bds(struct bnx2x_fastpath
*fp
)
1108 struct bnx2x
*bp
= fp
->bp
;
1111 /* ring wasn't allocated */
1112 if (fp
->rx_buf_ring
== NULL
)
1115 for (i
= 0; i
< NUM_RX_BD
; i
++) {
1116 struct sw_rx_bd
*rx_buf
= &fp
->rx_buf_ring
[i
];
1117 struct sk_buff
*skb
= rx_buf
->skb
;
1121 dma_unmap_single(&bp
->pdev
->dev
,
1122 dma_unmap_addr(rx_buf
, mapping
),
1123 fp
->rx_buf_size
, DMA_FROM_DEVICE
);
1130 static void bnx2x_free_rx_skbs(struct bnx2x
*bp
)
1134 for_each_rx_queue(bp
, j
) {
1135 struct bnx2x_fastpath
*fp
= &bp
->fp
[j
];
1137 bnx2x_free_rx_bds(fp
);
1139 if (!fp
->disable_tpa
)
1140 bnx2x_free_tpa_pool(bp
, fp
, CHIP_IS_E1(bp
) ?
1141 ETH_MAX_AGGREGATION_QUEUES_E1
:
1142 ETH_MAX_AGGREGATION_QUEUES_E1H_E2
);
1146 void bnx2x_free_skbs(struct bnx2x
*bp
)
1148 bnx2x_free_tx_skbs(bp
);
1149 bnx2x_free_rx_skbs(bp
);
1152 void bnx2x_update_max_mf_config(struct bnx2x
*bp
, u32 value
)
1154 /* load old values */
1155 u32 mf_cfg
= bp
->mf_config
[BP_VN(bp
)];
1157 if (value
!= bnx2x_extract_max_cfg(bp
, mf_cfg
)) {
1158 /* leave all but MAX value */
1159 mf_cfg
&= ~FUNC_MF_CFG_MAX_BW_MASK
;
1161 /* set new MAX value */
1162 mf_cfg
|= (value
<< FUNC_MF_CFG_MAX_BW_SHIFT
)
1163 & FUNC_MF_CFG_MAX_BW_MASK
;
1165 bnx2x_fw_command(bp
, DRV_MSG_CODE_SET_MF_BW
, mf_cfg
);
1170 * bnx2x_free_msix_irqs - free previously requested MSI-X IRQ vectors
1172 * @bp: driver handle
1173 * @nvecs: number of vectors to be released
1175 static void bnx2x_free_msix_irqs(struct bnx2x
*bp
, int nvecs
)
1179 if (nvecs
== offset
)
1181 free_irq(bp
->msix_table
[offset
].vector
, bp
->dev
);
1182 DP(NETIF_MSG_IFDOWN
, "released sp irq (%d)\n",
1183 bp
->msix_table
[offset
].vector
);
1186 if (nvecs
== offset
)
1191 for_each_eth_queue(bp
, i
) {
1192 if (nvecs
== offset
)
1194 DP(NETIF_MSG_IFDOWN
, "about to release fp #%d->%d "
1195 "irq\n", i
, bp
->msix_table
[offset
].vector
);
1197 free_irq(bp
->msix_table
[offset
++].vector
, &bp
->fp
[i
]);
1201 void bnx2x_free_irq(struct bnx2x
*bp
)
1203 if (bp
->flags
& USING_MSIX_FLAG
)
1204 bnx2x_free_msix_irqs(bp
, BNX2X_NUM_ETH_QUEUES(bp
) +
1206 else if (bp
->flags
& USING_MSI_FLAG
)
1207 free_irq(bp
->pdev
->irq
, bp
->dev
);
1209 free_irq(bp
->pdev
->irq
, bp
->dev
);
1212 int bnx2x_enable_msix(struct bnx2x
*bp
)
1214 int msix_vec
= 0, i
, rc
, req_cnt
;
1216 bp
->msix_table
[msix_vec
].entry
= msix_vec
;
1217 DP(NETIF_MSG_IFUP
, "msix_table[0].entry = %d (slowpath)\n",
1218 bp
->msix_table
[0].entry
);
1222 bp
->msix_table
[msix_vec
].entry
= msix_vec
;
1223 DP(NETIF_MSG_IFUP
, "msix_table[%d].entry = %d (CNIC)\n",
1224 bp
->msix_table
[msix_vec
].entry
, bp
->msix_table
[msix_vec
].entry
);
1227 /* We need separate vectors for ETH queues only (not FCoE) */
1228 for_each_eth_queue(bp
, i
) {
1229 bp
->msix_table
[msix_vec
].entry
= msix_vec
;
1230 DP(NETIF_MSG_IFUP
, "msix_table[%d].entry = %d "
1231 "(fastpath #%u)\n", msix_vec
, msix_vec
, i
);
1235 req_cnt
= BNX2X_NUM_ETH_QUEUES(bp
) + CNIC_PRESENT
+ 1;
1237 rc
= pci_enable_msix(bp
->pdev
, &bp
->msix_table
[0], req_cnt
);
1240 * reconfigure number of tx/rx queues according to available
1243 if (rc
>= BNX2X_MIN_MSIX_VEC_CNT
) {
1244 /* how less vectors we will have? */
1245 int diff
= req_cnt
- rc
;
1248 "Trying to use less MSI-X vectors: %d\n", rc
);
1250 rc
= pci_enable_msix(bp
->pdev
, &bp
->msix_table
[0], rc
);
1254 "MSI-X is not attainable rc %d\n", rc
);
1258 * decrease number of queues by number of unallocated entries
1260 bp
->num_queues
-= diff
;
1262 DP(NETIF_MSG_IFUP
, "New queue configuration set: %d\n",
1265 /* fall to INTx if not enough memory */
1267 bp
->flags
|= DISABLE_MSI_FLAG
;
1268 DP(NETIF_MSG_IFUP
, "MSI-X is not attainable rc %d\n", rc
);
1272 bp
->flags
|= USING_MSIX_FLAG
;
1277 static int bnx2x_req_msix_irqs(struct bnx2x
*bp
)
1279 int i
, rc
, offset
= 0;
1281 rc
= request_irq(bp
->msix_table
[offset
++].vector
,
1282 bnx2x_msix_sp_int
, 0,
1283 bp
->dev
->name
, bp
->dev
);
1285 BNX2X_ERR("request sp irq failed\n");
1292 for_each_eth_queue(bp
, i
) {
1293 struct bnx2x_fastpath
*fp
= &bp
->fp
[i
];
1294 snprintf(fp
->name
, sizeof(fp
->name
), "%s-fp-%d",
1297 rc
= request_irq(bp
->msix_table
[offset
].vector
,
1298 bnx2x_msix_fp_int
, 0, fp
->name
, fp
);
1300 BNX2X_ERR("request fp #%d irq (%d) failed rc %d\n", i
,
1301 bp
->msix_table
[offset
].vector
, rc
);
1302 bnx2x_free_msix_irqs(bp
, offset
);
1309 i
= BNX2X_NUM_ETH_QUEUES(bp
);
1310 offset
= 1 + CNIC_PRESENT
;
1311 netdev_info(bp
->dev
, "using MSI-X IRQs: sp %d fp[%d] %d"
1313 bp
->msix_table
[0].vector
,
1314 0, bp
->msix_table
[offset
].vector
,
1315 i
- 1, bp
->msix_table
[offset
+ i
- 1].vector
);
1320 int bnx2x_enable_msi(struct bnx2x
*bp
)
1324 rc
= pci_enable_msi(bp
->pdev
);
1326 DP(NETIF_MSG_IFUP
, "MSI is not attainable\n");
1329 bp
->flags
|= USING_MSI_FLAG
;
1334 static int bnx2x_req_irq(struct bnx2x
*bp
)
1336 unsigned long flags
;
1339 if (bp
->flags
& USING_MSI_FLAG
)
1342 flags
= IRQF_SHARED
;
1344 rc
= request_irq(bp
->pdev
->irq
, bnx2x_interrupt
, flags
,
1345 bp
->dev
->name
, bp
->dev
);
1349 static inline int bnx2x_setup_irqs(struct bnx2x
*bp
)
1352 if (bp
->flags
& USING_MSIX_FLAG
) {
1353 rc
= bnx2x_req_msix_irqs(bp
);
1358 rc
= bnx2x_req_irq(bp
);
1360 BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc
);
1363 if (bp
->flags
& USING_MSI_FLAG
) {
1364 bp
->dev
->irq
= bp
->pdev
->irq
;
1365 netdev_info(bp
->dev
, "using MSI IRQ %d\n",
1373 static inline void bnx2x_napi_enable(struct bnx2x
*bp
)
1377 for_each_rx_queue(bp
, i
)
1378 napi_enable(&bnx2x_fp(bp
, i
, napi
));
1381 static inline void bnx2x_napi_disable(struct bnx2x
*bp
)
1385 for_each_rx_queue(bp
, i
)
1386 napi_disable(&bnx2x_fp(bp
, i
, napi
));
1389 void bnx2x_netif_start(struct bnx2x
*bp
)
1391 if (netif_running(bp
->dev
)) {
1392 bnx2x_napi_enable(bp
);
1393 bnx2x_int_enable(bp
);
1394 if (bp
->state
== BNX2X_STATE_OPEN
)
1395 netif_tx_wake_all_queues(bp
->dev
);
1399 void bnx2x_netif_stop(struct bnx2x
*bp
, int disable_hw
)
1401 bnx2x_int_disable_sync(bp
, disable_hw
);
1402 bnx2x_napi_disable(bp
);
1405 u16
bnx2x_select_queue(struct net_device
*dev
, struct sk_buff
*skb
)
1407 struct bnx2x
*bp
= netdev_priv(dev
);
1410 return skb_tx_hash(dev
, skb
);
1412 struct ethhdr
*hdr
= (struct ethhdr
*)skb
->data
;
1413 u16 ether_type
= ntohs(hdr
->h_proto
);
1415 /* Skip VLAN tag if present */
1416 if (ether_type
== ETH_P_8021Q
) {
1417 struct vlan_ethhdr
*vhdr
=
1418 (struct vlan_ethhdr
*)skb
->data
;
1420 ether_type
= ntohs(vhdr
->h_vlan_encapsulated_proto
);
1423 /* If ethertype is FCoE or FIP - use FCoE ring */
1424 if ((ether_type
== ETH_P_FCOE
) || (ether_type
== ETH_P_FIP
))
1425 return bnx2x_fcoe_tx(bp
, txq_index
);
1428 /* Select a none-FCoE queue: if FCoE is enabled, exclude FCoE L2 ring
1430 return __skb_tx_hash(dev
, skb
, BNX2X_NUM_ETH_QUEUES(bp
));
1433 void bnx2x_set_num_queues(struct bnx2x
*bp
)
1435 switch (bp
->multi_mode
) {
1436 case ETH_RSS_MODE_DISABLED
:
1439 case ETH_RSS_MODE_REGULAR
:
1440 bp
->num_queues
= bnx2x_calc_num_queues(bp
);
1448 /* Add special queues */
1449 bp
->num_queues
+= NON_ETH_CONTEXT_USE
;
1452 static inline int bnx2x_set_real_num_queues(struct bnx2x
*bp
)
1456 tx
= MAX_TXQS_PER_COS
* bp
->max_cos
;
1457 rx
= BNX2X_NUM_ETH_QUEUES(bp
);
1459 /* account for fcoe queue */
1467 rc
= netif_set_real_num_tx_queues(bp
->dev
, tx
);
1469 BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc
);
1472 rc
= netif_set_real_num_rx_queues(bp
->dev
, rx
);
1474 BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc
);
1478 DP(NETIF_MSG_DRV
, "Setting real num queues to (tx, rx) (%d, %d)\n",
1484 static inline void bnx2x_set_rx_buf_size(struct bnx2x
*bp
)
1488 for_each_queue(bp
, i
) {
1489 struct bnx2x_fastpath
*fp
= &bp
->fp
[i
];
1491 /* Always use a mini-jumbo MTU for the FCoE L2 ring */
1494 * Although there are no IP frames expected to arrive to
1495 * this ring we still want to add an
1496 * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer
1500 BNX2X_FCOE_MINI_JUMBO_MTU
+ ETH_OVREHEAD
+
1501 BNX2X_FW_RX_ALIGN
+ IP_HEADER_ALIGNMENT_PADDING
;
1504 bp
->dev
->mtu
+ ETH_OVREHEAD
+
1505 BNX2X_FW_RX_ALIGN
+ IP_HEADER_ALIGNMENT_PADDING
;
1509 static inline int bnx2x_init_rss_pf(struct bnx2x
*bp
)
1512 u8 ind_table
[T_ETH_INDIRECTION_TABLE_SIZE
] = {0};
1513 u8 num_eth_queues
= BNX2X_NUM_ETH_QUEUES(bp
);
1516 * Prepare the inital contents fo the indirection table if RSS is
1519 if (bp
->multi_mode
!= ETH_RSS_MODE_DISABLED
) {
1520 for (i
= 0; i
< sizeof(ind_table
); i
++)
1522 bp
->fp
->cl_id
+ (i
% num_eth_queues
);
1526 * For 57710 and 57711 SEARCHER configuration (rss_keys) is
1527 * per-port, so if explicit configuration is needed , do it only
1530 * For 57712 and newer on the other hand it's a per-function
1533 return bnx2x_config_rss_pf(bp
, ind_table
,
1534 bp
->port
.pmf
|| !CHIP_IS_E1x(bp
));
1537 int bnx2x_config_rss_pf(struct bnx2x
*bp
, u8
*ind_table
, bool config_hash
)
1539 struct bnx2x_config_rss_params params
= {0};
1542 /* Although RSS is meaningless when there is a single HW queue we
1543 * still need it enabled in order to have HW Rx hash generated.
1545 * if (!is_eth_multi(bp))
1546 * bp->multi_mode = ETH_RSS_MODE_DISABLED;
1549 params
.rss_obj
= &bp
->rss_conf_obj
;
1551 __set_bit(RAMROD_COMP_WAIT
, ¶ms
.ramrod_flags
);
1554 switch (bp
->multi_mode
) {
1555 case ETH_RSS_MODE_DISABLED
:
1556 __set_bit(BNX2X_RSS_MODE_DISABLED
, ¶ms
.rss_flags
);
1558 case ETH_RSS_MODE_REGULAR
:
1559 __set_bit(BNX2X_RSS_MODE_REGULAR
, ¶ms
.rss_flags
);
1561 case ETH_RSS_MODE_VLAN_PRI
:
1562 __set_bit(BNX2X_RSS_MODE_VLAN_PRI
, ¶ms
.rss_flags
);
1564 case ETH_RSS_MODE_E1HOV_PRI
:
1565 __set_bit(BNX2X_RSS_MODE_E1HOV_PRI
, ¶ms
.rss_flags
);
1567 case ETH_RSS_MODE_IP_DSCP
:
1568 __set_bit(BNX2X_RSS_MODE_IP_DSCP
, ¶ms
.rss_flags
);
1571 BNX2X_ERR("Unknown multi_mode: %d\n", bp
->multi_mode
);
1575 /* If RSS is enabled */
1576 if (bp
->multi_mode
!= ETH_RSS_MODE_DISABLED
) {
1577 /* RSS configuration */
1578 __set_bit(BNX2X_RSS_IPV4
, ¶ms
.rss_flags
);
1579 __set_bit(BNX2X_RSS_IPV4_TCP
, ¶ms
.rss_flags
);
1580 __set_bit(BNX2X_RSS_IPV6
, ¶ms
.rss_flags
);
1581 __set_bit(BNX2X_RSS_IPV6_TCP
, ¶ms
.rss_flags
);
1584 params
.rss_result_mask
= MULTI_MASK
;
1586 memcpy(params
.ind_table
, ind_table
, sizeof(params
.ind_table
));
1590 for (i
= 0; i
< sizeof(params
.rss_key
) / 4; i
++)
1591 params
.rss_key
[i
] = random32();
1593 __set_bit(BNX2X_RSS_SET_SRCH
, ¶ms
.rss_flags
);
1597 return bnx2x_config_rss(bp
, ¶ms
);
1600 static inline int bnx2x_init_hw(struct bnx2x
*bp
, u32 load_code
)
1602 struct bnx2x_func_state_params func_params
= {0};
1604 /* Prepare parameters for function state transitions */
1605 __set_bit(RAMROD_COMP_WAIT
, &func_params
.ramrod_flags
);
1607 func_params
.f_obj
= &bp
->func_obj
;
1608 func_params
.cmd
= BNX2X_F_CMD_HW_INIT
;
1610 func_params
.params
.hw_init
.load_phase
= load_code
;
1612 return bnx2x_func_state_change(bp
, &func_params
);
1616 * Cleans the object that have internal lists without sending
1617 * ramrods. Should be run when interrutps are disabled.
1619 static void bnx2x_squeeze_objects(struct bnx2x
*bp
)
1622 unsigned long ramrod_flags
= 0, vlan_mac_flags
= 0;
1623 struct bnx2x_mcast_ramrod_params rparam
= {0};
1624 struct bnx2x_vlan_mac_obj
*mac_obj
= &bp
->fp
->mac_obj
;
1626 /***************** Cleanup MACs' object first *************************/
1628 /* Wait for completion of requested */
1629 __set_bit(RAMROD_COMP_WAIT
, &ramrod_flags
);
1630 /* Perform a dry cleanup */
1631 __set_bit(RAMROD_DRV_CLR_ONLY
, &ramrod_flags
);
1633 /* Clean ETH primary MAC */
1634 __set_bit(BNX2X_ETH_MAC
, &vlan_mac_flags
);
1635 rc
= mac_obj
->delete_all(bp
, &bp
->fp
->mac_obj
, &vlan_mac_flags
,
1638 BNX2X_ERR("Failed to clean ETH MACs: %d\n", rc
);
1640 /* Cleanup UC list */
1642 __set_bit(BNX2X_UC_LIST_MAC
, &vlan_mac_flags
);
1643 rc
= mac_obj
->delete_all(bp
, mac_obj
, &vlan_mac_flags
,
1646 BNX2X_ERR("Failed to clean UC list MACs: %d\n", rc
);
1648 /***************** Now clean mcast object *****************************/
1649 rparam
.mcast_obj
= &bp
->mcast_obj
;
1650 __set_bit(RAMROD_DRV_CLR_ONLY
, &rparam
.ramrod_flags
);
1652 /* Add a DEL command... */
1653 rc
= bnx2x_config_mcast(bp
, &rparam
, BNX2X_MCAST_CMD_DEL
);
1655 BNX2X_ERR("Failed to add a new DEL command to a multi-cast "
1656 "object: %d\n", rc
);
1658 /* ...and wait until all pending commands are cleared */
1659 rc
= bnx2x_config_mcast(bp
, &rparam
, BNX2X_MCAST_CMD_CONT
);
1662 BNX2X_ERR("Failed to clean multi-cast object: %d\n",
1667 rc
= bnx2x_config_mcast(bp
, &rparam
, BNX2X_MCAST_CMD_CONT
);
1671 #ifndef BNX2X_STOP_ON_ERROR
1672 #define LOAD_ERROR_EXIT(bp, label) \
1674 (bp)->state = BNX2X_STATE_ERROR; \
1678 #define LOAD_ERROR_EXIT(bp, label) \
1680 (bp)->state = BNX2X_STATE_ERROR; \
1686 /* must be called with rtnl_lock */
1687 int bnx2x_nic_load(struct bnx2x
*bp
, int load_mode
)
1689 int port
= BP_PORT(bp
);
1693 #ifdef BNX2X_STOP_ON_ERROR
1694 if (unlikely(bp
->panic
))
1698 bp
->state
= BNX2X_STATE_OPENING_WAIT4_LOAD
;
1700 /* Set the initial link reported state to link down */
1701 bnx2x_acquire_phy_lock(bp
);
1702 memset(&bp
->last_reported_link
, 0, sizeof(bp
->last_reported_link
));
1703 __set_bit(BNX2X_LINK_REPORT_LINK_DOWN
,
1704 &bp
->last_reported_link
.link_report_flags
);
1705 bnx2x_release_phy_lock(bp
);
1707 /* must be called before memory allocation and HW init */
1708 bnx2x_ilt_set_info(bp
);
1711 * Zero fastpath structures preserving invariants like napi, which are
1712 * allocated only once, fp index, max_cos, bp pointer.
1713 * Also set fp->disable_tpa.
1715 for_each_queue(bp
, i
)
1719 /* Set the receive queues buffer size */
1720 bnx2x_set_rx_buf_size(bp
);
1722 if (bnx2x_alloc_mem(bp
))
1725 /* As long as bnx2x_alloc_mem() may possibly update
1726 * bp->num_queues, bnx2x_set_real_num_queues() should always
1729 rc
= bnx2x_set_real_num_queues(bp
);
1731 BNX2X_ERR("Unable to set real_num_queues\n");
1732 LOAD_ERROR_EXIT(bp
, load_error0
);
1735 /* configure multi cos mappings in kernel.
1736 * this configuration may be overriden by a multi class queue discipline
1737 * or by a dcbx negotiation result.
1739 bnx2x_setup_tc(bp
->dev
, bp
->max_cos
);
1741 bnx2x_napi_enable(bp
);
1743 /* Send LOAD_REQUEST command to MCP
1744 * Returns the type of LOAD command:
1745 * if it is the first port to be initialized
1746 * common blocks should be initialized, otherwise - not
1748 if (!BP_NOMCP(bp
)) {
1749 load_code
= bnx2x_fw_command(bp
, DRV_MSG_CODE_LOAD_REQ
, 0);
1751 BNX2X_ERR("MCP response failure, aborting\n");
1753 LOAD_ERROR_EXIT(bp
, load_error1
);
1755 if (load_code
== FW_MSG_CODE_DRV_LOAD_REFUSED
) {
1756 rc
= -EBUSY
; /* other port in diagnostic mode */
1757 LOAD_ERROR_EXIT(bp
, load_error1
);
1761 int path
= BP_PATH(bp
);
1763 DP(NETIF_MSG_IFUP
, "NO MCP - load counts[%d] %d, %d, %d\n",
1764 path
, load_count
[path
][0], load_count
[path
][1],
1765 load_count
[path
][2]);
1766 load_count
[path
][0]++;
1767 load_count
[path
][1 + port
]++;
1768 DP(NETIF_MSG_IFUP
, "NO MCP - new load counts[%d] %d, %d, %d\n",
1769 path
, load_count
[path
][0], load_count
[path
][1],
1770 load_count
[path
][2]);
1771 if (load_count
[path
][0] == 1)
1772 load_code
= FW_MSG_CODE_DRV_LOAD_COMMON
;
1773 else if (load_count
[path
][1 + port
] == 1)
1774 load_code
= FW_MSG_CODE_DRV_LOAD_PORT
;
1776 load_code
= FW_MSG_CODE_DRV_LOAD_FUNCTION
;
1779 if ((load_code
== FW_MSG_CODE_DRV_LOAD_COMMON
) ||
1780 (load_code
== FW_MSG_CODE_DRV_LOAD_COMMON_CHIP
) ||
1781 (load_code
== FW_MSG_CODE_DRV_LOAD_PORT
)) {
1784 * We need the barrier to ensure the ordering between the
1785 * writing to bp->port.pmf here and reading it from the
1786 * bnx2x_periodic_task().
1789 queue_delayed_work(bnx2x_wq
, &bp
->period_task
, 0);
1793 DP(NETIF_MSG_LINK
, "pmf %d\n", bp
->port
.pmf
);
1795 /* Init Function state controlling object */
1796 bnx2x__init_func_obj(bp
);
1799 rc
= bnx2x_init_hw(bp
, load_code
);
1801 BNX2X_ERR("HW init failed, aborting\n");
1802 bnx2x_fw_command(bp
, DRV_MSG_CODE_LOAD_DONE
, 0);
1803 LOAD_ERROR_EXIT(bp
, load_error2
);
1806 /* Connect to IRQs */
1807 rc
= bnx2x_setup_irqs(bp
);
1809 bnx2x_fw_command(bp
, DRV_MSG_CODE_LOAD_DONE
, 0);
1810 LOAD_ERROR_EXIT(bp
, load_error2
);
1813 /* Setup NIC internals and enable interrupts */
1814 bnx2x_nic_init(bp
, load_code
);
1816 /* Init per-function objects */
1817 bnx2x_init_bp_objs(bp
);
1819 if (((load_code
== FW_MSG_CODE_DRV_LOAD_COMMON
) ||
1820 (load_code
== FW_MSG_CODE_DRV_LOAD_COMMON_CHIP
)) &&
1821 (bp
->common
.shmem2_base
)) {
1822 if (SHMEM2_HAS(bp
, dcc_support
))
1823 SHMEM2_WR(bp
, dcc_support
,
1824 (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV
|
1825 SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV
));
1828 bp
->state
= BNX2X_STATE_OPENING_WAIT4_PORT
;
1829 rc
= bnx2x_func_start(bp
);
1831 BNX2X_ERR("Function start failed!\n");
1832 bnx2x_fw_command(bp
, DRV_MSG_CODE_LOAD_DONE
, 0);
1833 LOAD_ERROR_EXIT(bp
, load_error3
);
1836 /* Send LOAD_DONE command to MCP */
1837 if (!BP_NOMCP(bp
)) {
1838 load_code
= bnx2x_fw_command(bp
, DRV_MSG_CODE_LOAD_DONE
, 0);
1840 BNX2X_ERR("MCP response failure, aborting\n");
1842 LOAD_ERROR_EXIT(bp
, load_error3
);
1846 rc
= bnx2x_setup_leading(bp
);
1848 BNX2X_ERR("Setup leading failed!\n");
1849 LOAD_ERROR_EXIT(bp
, load_error3
);
1853 /* Enable Timer scan */
1854 REG_WR(bp
, TM_REG_EN_LINEAR0_TIMER
+ port
*4, 1);
1857 for_each_nondefault_queue(bp
, i
) {
1858 rc
= bnx2x_setup_queue(bp
, &bp
->fp
[i
], 0);
1860 LOAD_ERROR_EXIT(bp
, load_error4
);
1863 rc
= bnx2x_init_rss_pf(bp
);
1865 LOAD_ERROR_EXIT(bp
, load_error4
);
1867 /* Now when Clients are configured we are ready to work */
1868 bp
->state
= BNX2X_STATE_OPEN
;
1870 /* Configure a ucast MAC */
1871 rc
= bnx2x_set_eth_mac(bp
, true);
1873 LOAD_ERROR_EXIT(bp
, load_error4
);
1875 if (bp
->pending_max
) {
1876 bnx2x_update_max_mf_config(bp
, bp
->pending_max
);
1877 bp
->pending_max
= 0;
1881 bnx2x_initial_phy_init(bp
, load_mode
);
1883 /* Start fast path */
1885 /* Initialize Rx filter. */
1886 netif_addr_lock_bh(bp
->dev
);
1887 bnx2x_set_rx_mode(bp
->dev
);
1888 netif_addr_unlock_bh(bp
->dev
);
1891 switch (load_mode
) {
1893 /* Tx queue should be only reenabled */
1894 netif_tx_wake_all_queues(bp
->dev
);
1898 netif_tx_start_all_queues(bp
->dev
);
1899 smp_mb__after_clear_bit();
1903 bp
->state
= BNX2X_STATE_DIAG
;
1911 bnx2x__link_status_update(bp
);
1913 /* start the timer */
1914 mod_timer(&bp
->timer
, jiffies
+ bp
->current_interval
);
1917 bnx2x_setup_cnic_irq_info(bp
);
1918 if (bp
->state
== BNX2X_STATE_OPEN
)
1919 bnx2x_cnic_notify(bp
, CNIC_CTL_START_CMD
);
1921 bnx2x_inc_load_cnt(bp
);
1923 /* Wait for all pending SP commands to complete */
1924 if (!bnx2x_wait_sp_comp(bp
, ~0x0UL
)) {
1925 BNX2X_ERR("Timeout waiting for SP elements to complete\n");
1926 bnx2x_nic_unload(bp
, UNLOAD_CLOSE
);
1930 bnx2x_dcbx_init(bp
);
1933 #ifndef BNX2X_STOP_ON_ERROR
1936 /* Disable Timer scan */
1937 REG_WR(bp
, TM_REG_EN_LINEAR0_TIMER
+ port
*4, 0);
1940 bnx2x_int_disable_sync(bp
, 1);
1942 /* Clean queueable objects */
1943 bnx2x_squeeze_objects(bp
);
1945 /* Free SKBs, SGEs, TPA pool and driver internals */
1946 bnx2x_free_skbs(bp
);
1947 for_each_rx_queue(bp
, i
)
1948 bnx2x_free_rx_sge_range(bp
, bp
->fp
+ i
, NUM_RX_SGE
);
1953 if (!BP_NOMCP(bp
)) {
1954 bnx2x_fw_command(bp
, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP
, 0);
1955 bnx2x_fw_command(bp
, DRV_MSG_CODE_UNLOAD_DONE
, 0);
1960 bnx2x_napi_disable(bp
);
1965 #endif /* ! BNX2X_STOP_ON_ERROR */
1968 /* must be called with rtnl_lock */
1969 int bnx2x_nic_unload(struct bnx2x
*bp
, int unload_mode
)
1972 bool global
= false;
1974 if ((bp
->state
== BNX2X_STATE_CLOSED
) ||
1975 (bp
->state
== BNX2X_STATE_ERROR
)) {
1976 /* We can get here if the driver has been unloaded
1977 * during parity error recovery and is either waiting for a
1978 * leader to complete or for other functions to unload and
1979 * then ifdown has been issued. In this case we want to
1980 * unload and let other functions to complete a recovery
1983 bp
->recovery_state
= BNX2X_RECOVERY_DONE
;
1985 bnx2x_release_leader_lock(bp
);
1988 DP(NETIF_MSG_HW
, "Releasing a leadership...\n");
1994 * It's important to set the bp->state to the value different from
1995 * BNX2X_STATE_OPEN and only then stop the Tx. Otherwise bnx2x_tx_int()
1996 * may restart the Tx from the NAPI context (see bnx2x_tx_int()).
1998 bp
->state
= BNX2X_STATE_CLOSING_WAIT4_HALT
;
2002 bnx2x_tx_disable(bp
);
2005 bnx2x_cnic_notify(bp
, CNIC_CTL_STOP_CMD
);
2008 bp
->rx_mode
= BNX2X_RX_MODE_NONE
;
2010 del_timer_sync(&bp
->timer
);
2012 /* Set ALWAYS_ALIVE bit in shmem */
2013 bp
->fw_drv_pulse_wr_seq
|= DRV_PULSE_ALWAYS_ALIVE
;
2015 bnx2x_drv_pulse(bp
);
2017 bnx2x_stats_handle(bp
, STATS_EVENT_STOP
);
2019 /* Cleanup the chip if needed */
2020 if (unload_mode
!= UNLOAD_RECOVERY
)
2021 bnx2x_chip_cleanup(bp
, unload_mode
);
2023 /* Send the UNLOAD_REQUEST to the MCP */
2024 bnx2x_send_unload_req(bp
, unload_mode
);
2027 * Prevent transactions to host from the functions on the
2028 * engine that doesn't reset global blocks in case of global
2029 * attention once gloabl blocks are reset and gates are opened
2030 * (the engine which leader will perform the recovery
2033 if (!CHIP_IS_E1x(bp
))
2034 bnx2x_pf_disable(bp
);
2036 /* Disable HW interrupts, NAPI */
2037 bnx2x_netif_stop(bp
, 1);
2042 /* Report UNLOAD_DONE to MCP */
2043 bnx2x_send_unload_done(bp
);
2047 * At this stage no more interrupts will arrive so we may safly clean
2048 * the queueable objects here in case they failed to get cleaned so far.
2050 bnx2x_squeeze_objects(bp
);
2052 /* There should be no more pending SP commands at this stage */
2057 /* Free SKBs, SGEs, TPA pool and driver internals */
2058 bnx2x_free_skbs(bp
);
2059 for_each_rx_queue(bp
, i
)
2060 bnx2x_free_rx_sge_range(bp
, bp
->fp
+ i
, NUM_RX_SGE
);
2064 bp
->state
= BNX2X_STATE_CLOSED
;
2066 /* Check if there are pending parity attentions. If there are - set
2067 * RECOVERY_IN_PROGRESS.
2069 if (bnx2x_chk_parity_attn(bp
, &global
, false)) {
2070 bnx2x_set_reset_in_progress(bp
);
2072 /* Set RESET_IS_GLOBAL if needed */
2074 bnx2x_set_reset_global(bp
);
2078 /* The last driver must disable a "close the gate" if there is no
2079 * parity attention or "process kill" pending.
2081 if (!bnx2x_dec_load_cnt(bp
) && bnx2x_reset_is_done(bp
, BP_PATH(bp
)))
2082 bnx2x_disable_close_the_gate(bp
);
2087 int bnx2x_set_power_state(struct bnx2x
*bp
, pci_power_t state
)
2091 /* If there is no power capability, silently succeed */
2093 DP(NETIF_MSG_HW
, "No power capability. Breaking.\n");
2097 pci_read_config_word(bp
->pdev
, bp
->pm_cap
+ PCI_PM_CTRL
, &pmcsr
);
2101 pci_write_config_word(bp
->pdev
, bp
->pm_cap
+ PCI_PM_CTRL
,
2102 ((pmcsr
& ~PCI_PM_CTRL_STATE_MASK
) |
2103 PCI_PM_CTRL_PME_STATUS
));
2105 if (pmcsr
& PCI_PM_CTRL_STATE_MASK
)
2106 /* delay required during transition out of D3hot */
2111 /* If there are other clients above don't
2112 shut down the power */
2113 if (atomic_read(&bp
->pdev
->enable_cnt
) != 1)
2115 /* Don't shut down the power for emulation and FPGA */
2116 if (CHIP_REV_IS_SLOW(bp
))
2119 pmcsr
&= ~PCI_PM_CTRL_STATE_MASK
;
2123 pmcsr
|= PCI_PM_CTRL_PME_ENABLE
;
2125 pci_write_config_word(bp
->pdev
, bp
->pm_cap
+ PCI_PM_CTRL
,
2128 /* No more memory access after this point until
2129 * device is brought back to D0.
2140 * net_device service functions
2142 int bnx2x_poll(struct napi_struct
*napi
, int budget
)
2146 struct bnx2x_fastpath
*fp
= container_of(napi
, struct bnx2x_fastpath
,
2148 struct bnx2x
*bp
= fp
->bp
;
2151 #ifdef BNX2X_STOP_ON_ERROR
2152 if (unlikely(bp
->panic
)) {
2153 napi_complete(napi
);
2158 for_each_cos_in_tx_queue(fp
, cos
)
2159 if (bnx2x_tx_queue_has_work(&fp
->txdata
[cos
]))
2160 bnx2x_tx_int(bp
, &fp
->txdata
[cos
]);
2163 if (bnx2x_has_rx_work(fp
)) {
2164 work_done
+= bnx2x_rx_int(fp
, budget
- work_done
);
2166 /* must not complete if we consumed full budget */
2167 if (work_done
>= budget
)
2171 /* Fall out from the NAPI loop if needed */
2172 if (!(bnx2x_has_rx_work(fp
) || bnx2x_has_tx_work(fp
))) {
2174 /* No need to update SB for FCoE L2 ring as long as
2175 * it's connected to the default SB and the SB
2176 * has been updated when NAPI was scheduled.
2178 if (IS_FCOE_FP(fp
)) {
2179 napi_complete(napi
);
2184 bnx2x_update_fpsb_idx(fp
);
2185 /* bnx2x_has_rx_work() reads the status block,
2186 * thus we need to ensure that status block indices
2187 * have been actually read (bnx2x_update_fpsb_idx)
2188 * prior to this check (bnx2x_has_rx_work) so that
2189 * we won't write the "newer" value of the status block
2190 * to IGU (if there was a DMA right after
2191 * bnx2x_has_rx_work and if there is no rmb, the memory
2192 * reading (bnx2x_update_fpsb_idx) may be postponed
2193 * to right before bnx2x_ack_sb). In this case there
2194 * will never be another interrupt until there is
2195 * another update of the status block, while there
2196 * is still unhandled work.
2200 if (!(bnx2x_has_rx_work(fp
) || bnx2x_has_tx_work(fp
))) {
2201 napi_complete(napi
);
2202 /* Re-enable interrupts */
2204 "Update index to %d\n", fp
->fp_hc_idx
);
2205 bnx2x_ack_sb(bp
, fp
->igu_sb_id
, USTORM_ID
,
2206 le16_to_cpu(fp
->fp_hc_idx
),
2216 /* we split the first BD into headers and data BDs
2217 * to ease the pain of our fellow microcode engineers
2218 * we use one mapping for both BDs
2219 * So far this has only been observed to happen
2220 * in Other Operating Systems(TM)
2222 static noinline u16
bnx2x_tx_split(struct bnx2x
*bp
,
2223 struct bnx2x_fp_txdata
*txdata
,
2224 struct sw_tx_bd
*tx_buf
,
2225 struct eth_tx_start_bd
**tx_bd
, u16 hlen
,
2226 u16 bd_prod
, int nbd
)
2228 struct eth_tx_start_bd
*h_tx_bd
= *tx_bd
;
2229 struct eth_tx_bd
*d_tx_bd
;
2231 int old_len
= le16_to_cpu(h_tx_bd
->nbytes
);
2233 /* first fix first BD */
2234 h_tx_bd
->nbd
= cpu_to_le16(nbd
);
2235 h_tx_bd
->nbytes
= cpu_to_le16(hlen
);
2237 DP(NETIF_MSG_TX_QUEUED
, "TSO split header size is %d "
2238 "(%x:%x) nbd %d\n", h_tx_bd
->nbytes
, h_tx_bd
->addr_hi
,
2239 h_tx_bd
->addr_lo
, h_tx_bd
->nbd
);
2241 /* now get a new data BD
2242 * (after the pbd) and fill it */
2243 bd_prod
= TX_BD(NEXT_TX_IDX(bd_prod
));
2244 d_tx_bd
= &txdata
->tx_desc_ring
[bd_prod
].reg_bd
;
2246 mapping
= HILO_U64(le32_to_cpu(h_tx_bd
->addr_hi
),
2247 le32_to_cpu(h_tx_bd
->addr_lo
)) + hlen
;
2249 d_tx_bd
->addr_hi
= cpu_to_le32(U64_HI(mapping
));
2250 d_tx_bd
->addr_lo
= cpu_to_le32(U64_LO(mapping
));
2251 d_tx_bd
->nbytes
= cpu_to_le16(old_len
- hlen
);
2253 /* this marks the BD as one that has no individual mapping */
2254 tx_buf
->flags
|= BNX2X_TSO_SPLIT_BD
;
2256 DP(NETIF_MSG_TX_QUEUED
,
2257 "TSO split data size is %d (%x:%x)\n",
2258 d_tx_bd
->nbytes
, d_tx_bd
->addr_hi
, d_tx_bd
->addr_lo
);
2261 *tx_bd
= (struct eth_tx_start_bd
*)d_tx_bd
;
2266 static inline u16
bnx2x_csum_fix(unsigned char *t_header
, u16 csum
, s8 fix
)
2269 csum
= (u16
) ~csum_fold(csum_sub(csum
,
2270 csum_partial(t_header
- fix
, fix
, 0)));
2273 csum
= (u16
) ~csum_fold(csum_add(csum
,
2274 csum_partial(t_header
, -fix
, 0)));
2276 return swab16(csum
);
2279 static inline u32
bnx2x_xmit_type(struct bnx2x
*bp
, struct sk_buff
*skb
)
2283 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2287 if (vlan_get_protocol(skb
) == htons(ETH_P_IPV6
)) {
2289 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2290 rc
|= XMIT_CSUM_TCP
;
2294 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2295 rc
|= XMIT_CSUM_TCP
;
2299 if (skb_is_gso_v6(skb
))
2300 rc
|= XMIT_GSO_V6
| XMIT_CSUM_TCP
| XMIT_CSUM_V6
;
2301 else if (skb_is_gso(skb
))
2302 rc
|= XMIT_GSO_V4
| XMIT_CSUM_V4
| XMIT_CSUM_TCP
;
2307 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2308 /* check if packet requires linearization (packet is too fragmented)
2309 no need to check fragmentation if page size > 8K (there will be no
2310 violation to FW restrictions) */
2311 static int bnx2x_pkt_req_lin(struct bnx2x
*bp
, struct sk_buff
*skb
,
2316 int first_bd_sz
= 0;
2318 /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
2319 if (skb_shinfo(skb
)->nr_frags
>= (MAX_FETCH_BD
- 3)) {
2321 if (xmit_type
& XMIT_GSO
) {
2322 unsigned short lso_mss
= skb_shinfo(skb
)->gso_size
;
2323 /* Check if LSO packet needs to be copied:
2324 3 = 1 (for headers BD) + 2 (for PBD and last BD) */
2325 int wnd_size
= MAX_FETCH_BD
- 3;
2326 /* Number of windows to check */
2327 int num_wnds
= skb_shinfo(skb
)->nr_frags
- wnd_size
;
2332 /* Headers length */
2333 hlen
= (int)(skb_transport_header(skb
) - skb
->data
) +
2336 /* Amount of data (w/o headers) on linear part of SKB*/
2337 first_bd_sz
= skb_headlen(skb
) - hlen
;
2339 wnd_sum
= first_bd_sz
;
2341 /* Calculate the first sum - it's special */
2342 for (frag_idx
= 0; frag_idx
< wnd_size
- 1; frag_idx
++)
2344 skb_shinfo(skb
)->frags
[frag_idx
].size
;
2346 /* If there was data on linear skb data - check it */
2347 if (first_bd_sz
> 0) {
2348 if (unlikely(wnd_sum
< lso_mss
)) {
2353 wnd_sum
-= first_bd_sz
;
2356 /* Others are easier: run through the frag list and
2357 check all windows */
2358 for (wnd_idx
= 0; wnd_idx
<= num_wnds
; wnd_idx
++) {
2360 skb_shinfo(skb
)->frags
[wnd_idx
+ wnd_size
- 1].size
;
2362 if (unlikely(wnd_sum
< lso_mss
)) {
2367 skb_shinfo(skb
)->frags
[wnd_idx
].size
;
2370 /* in non-LSO too fragmented packet should always
2377 if (unlikely(to_copy
))
2378 DP(NETIF_MSG_TX_QUEUED
,
2379 "Linearization IS REQUIRED for %s packet. "
2380 "num_frags %d hlen %d first_bd_sz %d\n",
2381 (xmit_type
& XMIT_GSO
) ? "LSO" : "non-LSO",
2382 skb_shinfo(skb
)->nr_frags
, hlen
, first_bd_sz
);
2388 static inline void bnx2x_set_pbd_gso_e2(struct sk_buff
*skb
, u32
*parsing_data
,
2391 *parsing_data
|= (skb_shinfo(skb
)->gso_size
<<
2392 ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT
) &
2393 ETH_TX_PARSE_BD_E2_LSO_MSS
;
2394 if ((xmit_type
& XMIT_GSO_V6
) &&
2395 (ipv6_hdr(skb
)->nexthdr
== NEXTHDR_IPV6
))
2396 *parsing_data
|= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR
;
2400 * bnx2x_set_pbd_gso - update PBD in GSO case.
2404 * @xmit_type: xmit flags
2406 static inline void bnx2x_set_pbd_gso(struct sk_buff
*skb
,
2407 struct eth_tx_parse_bd_e1x
*pbd
,
2410 pbd
->lso_mss
= cpu_to_le16(skb_shinfo(skb
)->gso_size
);
2411 pbd
->tcp_send_seq
= swab32(tcp_hdr(skb
)->seq
);
2412 pbd
->tcp_flags
= pbd_tcp_flags(skb
);
2414 if (xmit_type
& XMIT_GSO_V4
) {
2415 pbd
->ip_id
= swab16(ip_hdr(skb
)->id
);
2416 pbd
->tcp_pseudo_csum
=
2417 swab16(~csum_tcpudp_magic(ip_hdr(skb
)->saddr
,
2419 0, IPPROTO_TCP
, 0));
2422 pbd
->tcp_pseudo_csum
=
2423 swab16(~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2424 &ipv6_hdr(skb
)->daddr
,
2425 0, IPPROTO_TCP
, 0));
2427 pbd
->global_data
|= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN
;
2431 * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length
2433 * @bp: driver handle
2435 * @parsing_data: data to be updated
2436 * @xmit_type: xmit flags
2440 static inline u8
bnx2x_set_pbd_csum_e2(struct bnx2x
*bp
, struct sk_buff
*skb
,
2441 u32
*parsing_data
, u32 xmit_type
)
2444 ((((u8
*)skb_transport_header(skb
) - skb
->data
) >> 1) <<
2445 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT
) &
2446 ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W
;
2448 if (xmit_type
& XMIT_CSUM_TCP
) {
2449 *parsing_data
|= ((tcp_hdrlen(skb
) / 4) <<
2450 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT
) &
2451 ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW
;
2453 return skb_transport_header(skb
) + tcp_hdrlen(skb
) - skb
->data
;
2455 /* We support checksum offload for TCP and UDP only.
2456 * No need to pass the UDP header length - it's a constant.
2458 return skb_transport_header(skb
) +
2459 sizeof(struct udphdr
) - skb
->data
;
2462 static inline void bnx2x_set_sbd_csum(struct bnx2x
*bp
, struct sk_buff
*skb
,
2463 struct eth_tx_start_bd
*tx_start_bd
, u32 xmit_type
)
2465 tx_start_bd
->bd_flags
.as_bitfield
|= ETH_TX_BD_FLAGS_L4_CSUM
;
2467 if (xmit_type
& XMIT_CSUM_V4
)
2468 tx_start_bd
->bd_flags
.as_bitfield
|=
2469 ETH_TX_BD_FLAGS_IP_CSUM
;
2471 tx_start_bd
->bd_flags
.as_bitfield
|=
2472 ETH_TX_BD_FLAGS_IPV6
;
2474 if (!(xmit_type
& XMIT_CSUM_TCP
))
2475 tx_start_bd
->bd_flags
.as_bitfield
|= ETH_TX_BD_FLAGS_IS_UDP
;
2479 * bnx2x_set_pbd_csum - update PBD with checksum and return header length
2481 * @bp: driver handle
2483 * @pbd: parse BD to be updated
2484 * @xmit_type: xmit flags
2486 static inline u8
bnx2x_set_pbd_csum(struct bnx2x
*bp
, struct sk_buff
*skb
,
2487 struct eth_tx_parse_bd_e1x
*pbd
,
2490 u8 hlen
= (skb_network_header(skb
) - skb
->data
) >> 1;
2492 /* for now NS flag is not used in Linux */
2494 (hlen
| ((skb
->protocol
== cpu_to_be16(ETH_P_8021Q
)) <<
2495 ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT
));
2497 pbd
->ip_hlen_w
= (skb_transport_header(skb
) -
2498 skb_network_header(skb
)) >> 1;
2500 hlen
+= pbd
->ip_hlen_w
;
2502 /* We support checksum offload for TCP and UDP only */
2503 if (xmit_type
& XMIT_CSUM_TCP
)
2504 hlen
+= tcp_hdrlen(skb
) / 2;
2506 hlen
+= sizeof(struct udphdr
) / 2;
2508 pbd
->total_hlen_w
= cpu_to_le16(hlen
);
2511 if (xmit_type
& XMIT_CSUM_TCP
) {
2512 pbd
->tcp_pseudo_csum
= swab16(tcp_hdr(skb
)->check
);
2515 s8 fix
= SKB_CS_OFF(skb
); /* signed! */
2517 DP(NETIF_MSG_TX_QUEUED
,
2518 "hlen %d fix %d csum before fix %x\n",
2519 le16_to_cpu(pbd
->total_hlen_w
), fix
, SKB_CS(skb
));
2521 /* HW bug: fixup the CSUM */
2522 pbd
->tcp_pseudo_csum
=
2523 bnx2x_csum_fix(skb_transport_header(skb
),
2526 DP(NETIF_MSG_TX_QUEUED
, "csum after fix %x\n",
2527 pbd
->tcp_pseudo_csum
);
2533 /* called with netif_tx_lock
2534 * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
2535 * netif_wake_queue()
2537 netdev_tx_t
bnx2x_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2539 struct bnx2x
*bp
= netdev_priv(dev
);
2541 struct bnx2x_fastpath
*fp
;
2542 struct netdev_queue
*txq
;
2543 struct bnx2x_fp_txdata
*txdata
;
2544 struct sw_tx_bd
*tx_buf
;
2545 struct eth_tx_start_bd
*tx_start_bd
, *first_bd
;
2546 struct eth_tx_bd
*tx_data_bd
, *total_pkt_bd
= NULL
;
2547 struct eth_tx_parse_bd_e1x
*pbd_e1x
= NULL
;
2548 struct eth_tx_parse_bd_e2
*pbd_e2
= NULL
;
2549 u32 pbd_e2_parsing_data
= 0;
2550 u16 pkt_prod
, bd_prod
;
2551 int nbd
, txq_index
, fp_index
, txdata_index
;
2553 u32 xmit_type
= bnx2x_xmit_type(bp
, skb
);
2556 __le16 pkt_size
= 0;
2558 u8 mac_type
= UNICAST_ADDRESS
;
2560 #ifdef BNX2X_STOP_ON_ERROR
2561 if (unlikely(bp
->panic
))
2562 return NETDEV_TX_BUSY
;
2565 txq_index
= skb_get_queue_mapping(skb
);
2566 txq
= netdev_get_tx_queue(dev
, txq_index
);
2568 BUG_ON(txq_index
>= MAX_ETH_TXQ_IDX(bp
) + FCOE_PRESENT
);
2570 /* decode the fastpath index and the cos index from the txq */
2571 fp_index
= TXQ_TO_FP(txq_index
);
2572 txdata_index
= TXQ_TO_COS(txq_index
);
2576 * Override the above for the FCoE queue:
2577 * - FCoE fp entry is right after the ETH entries.
2578 * - FCoE L2 queue uses bp->txdata[0] only.
2580 if (unlikely(!NO_FCOE(bp
) && (txq_index
==
2581 bnx2x_fcoe_tx(bp
, txq_index
)))) {
2582 fp_index
= FCOE_IDX
;
2587 /* enable this debug print to view the transmission queue being used
2588 DP(BNX2X_MSG_FP, "indices: txq %d, fp %d, txdata %d",
2589 txq_index, fp_index, txdata_index); */
2591 /* locate the fastpath and the txdata */
2592 fp
= &bp
->fp
[fp_index
];
2593 txdata
= &fp
->txdata
[txdata_index
];
2595 /* enable this debug print to view the tranmission details
2596 DP(BNX2X_MSG_FP,"transmitting packet cid %d fp index %d txdata_index %d"
2597 " tx_data ptr %p fp pointer %p",
2598 txdata->cid, fp_index, txdata_index, txdata, fp); */
2600 if (unlikely(bnx2x_tx_avail(bp
, txdata
) <
2601 (skb_shinfo(skb
)->nr_frags
+ 3))) {
2602 fp
->eth_q_stats
.driver_xoff
++;
2603 netif_tx_stop_queue(txq
);
2604 BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
2605 return NETDEV_TX_BUSY
;
2608 DP(NETIF_MSG_TX_QUEUED
, "queue[%d]: SKB: summed %x protocol %x "
2609 "protocol(%x,%x) gso type %x xmit_type %x\n",
2610 txq_index
, skb
->ip_summed
, skb
->protocol
, ipv6_hdr(skb
)->nexthdr
,
2611 ip_hdr(skb
)->protocol
, skb_shinfo(skb
)->gso_type
, xmit_type
);
2613 eth
= (struct ethhdr
*)skb
->data
;
2615 /* set flag according to packet type (UNICAST_ADDRESS is default)*/
2616 if (unlikely(is_multicast_ether_addr(eth
->h_dest
))) {
2617 if (is_broadcast_ether_addr(eth
->h_dest
))
2618 mac_type
= BROADCAST_ADDRESS
;
2620 mac_type
= MULTICAST_ADDRESS
;
2623 #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3)
2624 /* First, check if we need to linearize the skb (due to FW
2625 restrictions). No need to check fragmentation if page size > 8K
2626 (there will be no violation to FW restrictions) */
2627 if (bnx2x_pkt_req_lin(bp
, skb
, xmit_type
)) {
2628 /* Statistics of linearization */
2630 if (skb_linearize(skb
) != 0) {
2631 DP(NETIF_MSG_TX_QUEUED
, "SKB linearization failed - "
2632 "silently dropping this SKB\n");
2633 dev_kfree_skb_any(skb
);
2634 return NETDEV_TX_OK
;
2638 /* Map skb linear data for DMA */
2639 mapping
= dma_map_single(&bp
->pdev
->dev
, skb
->data
,
2640 skb_headlen(skb
), DMA_TO_DEVICE
);
2641 if (unlikely(dma_mapping_error(&bp
->pdev
->dev
, mapping
))) {
2642 DP(NETIF_MSG_TX_QUEUED
, "SKB mapping failed - "
2643 "silently dropping this SKB\n");
2644 dev_kfree_skb_any(skb
);
2645 return NETDEV_TX_OK
;
2648 Please read carefully. First we use one BD which we mark as start,
2649 then we have a parsing info BD (used for TSO or xsum),
2650 and only then we have the rest of the TSO BDs.
2651 (don't forget to mark the last one as last,
2652 and to unmap only AFTER you write to the BD ...)
2653 And above all, all pdb sizes are in words - NOT DWORDS!
2656 /* get current pkt produced now - advance it just before sending packet
2657 * since mapping of pages may fail and cause packet to be dropped
2659 pkt_prod
= txdata
->tx_pkt_prod
;
2660 bd_prod
= TX_BD(txdata
->tx_bd_prod
);
2662 /* get a tx_buf and first BD
2663 * tx_start_bd may be changed during SPLIT,
2664 * but first_bd will always stay first
2666 tx_buf
= &txdata
->tx_buf_ring
[TX_BD(pkt_prod
)];
2667 tx_start_bd
= &txdata
->tx_desc_ring
[bd_prod
].start_bd
;
2668 first_bd
= tx_start_bd
;
2670 tx_start_bd
->bd_flags
.as_bitfield
= ETH_TX_BD_FLAGS_START_BD
;
2671 SET_FLAG(tx_start_bd
->general_data
, ETH_TX_START_BD_ETH_ADDR_TYPE
,
2675 SET_FLAG(tx_start_bd
->general_data
, ETH_TX_START_BD_HDR_NBDS
, 1);
2677 /* remember the first BD of the packet */
2678 tx_buf
->first_bd
= txdata
->tx_bd_prod
;
2682 DP(NETIF_MSG_TX_QUEUED
,
2683 "sending pkt %u @%p next_idx %u bd %u @%p\n",
2684 pkt_prod
, tx_buf
, txdata
->tx_pkt_prod
, bd_prod
, tx_start_bd
);
2686 if (vlan_tx_tag_present(skb
)) {
2687 tx_start_bd
->vlan_or_ethertype
=
2688 cpu_to_le16(vlan_tx_tag_get(skb
));
2689 tx_start_bd
->bd_flags
.as_bitfield
|=
2690 (X_ETH_OUTBAND_VLAN
<< ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT
);
2692 tx_start_bd
->vlan_or_ethertype
= cpu_to_le16(pkt_prod
);
2694 /* turn on parsing and get a BD */
2695 bd_prod
= TX_BD(NEXT_TX_IDX(bd_prod
));
2697 if (xmit_type
& XMIT_CSUM
)
2698 bnx2x_set_sbd_csum(bp
, skb
, tx_start_bd
, xmit_type
);
2700 if (!CHIP_IS_E1x(bp
)) {
2701 pbd_e2
= &txdata
->tx_desc_ring
[bd_prod
].parse_bd_e2
;
2702 memset(pbd_e2
, 0, sizeof(struct eth_tx_parse_bd_e2
));
2703 /* Set PBD in checksum offload case */
2704 if (xmit_type
& XMIT_CSUM
)
2705 hlen
= bnx2x_set_pbd_csum_e2(bp
, skb
,
2706 &pbd_e2_parsing_data
,
2710 * fill in the MAC addresses in the PBD - for local
2713 bnx2x_set_fw_mac_addr(&pbd_e2
->src_mac_addr_hi
,
2714 &pbd_e2
->src_mac_addr_mid
,
2715 &pbd_e2
->src_mac_addr_lo
,
2717 bnx2x_set_fw_mac_addr(&pbd_e2
->dst_mac_addr_hi
,
2718 &pbd_e2
->dst_mac_addr_mid
,
2719 &pbd_e2
->dst_mac_addr_lo
,
2723 pbd_e1x
= &txdata
->tx_desc_ring
[bd_prod
].parse_bd_e1x
;
2724 memset(pbd_e1x
, 0, sizeof(struct eth_tx_parse_bd_e1x
));
2725 /* Set PBD in checksum offload case */
2726 if (xmit_type
& XMIT_CSUM
)
2727 hlen
= bnx2x_set_pbd_csum(bp
, skb
, pbd_e1x
, xmit_type
);
2731 /* Setup the data pointer of the first BD of the packet */
2732 tx_start_bd
->addr_hi
= cpu_to_le32(U64_HI(mapping
));
2733 tx_start_bd
->addr_lo
= cpu_to_le32(U64_LO(mapping
));
2734 nbd
= 2; /* start_bd + pbd + frags (updated when pages are mapped) */
2735 tx_start_bd
->nbytes
= cpu_to_le16(skb_headlen(skb
));
2736 pkt_size
= tx_start_bd
->nbytes
;
2738 DP(NETIF_MSG_TX_QUEUED
, "first bd @%p addr (%x:%x) nbd %d"
2739 " nbytes %d flags %x vlan %x\n",
2740 tx_start_bd
, tx_start_bd
->addr_hi
, tx_start_bd
->addr_lo
,
2741 le16_to_cpu(tx_start_bd
->nbd
), le16_to_cpu(tx_start_bd
->nbytes
),
2742 tx_start_bd
->bd_flags
.as_bitfield
,
2743 le16_to_cpu(tx_start_bd
->vlan_or_ethertype
));
2745 if (xmit_type
& XMIT_GSO
) {
2747 DP(NETIF_MSG_TX_QUEUED
,
2748 "TSO packet len %d hlen %d total len %d tso size %d\n",
2749 skb
->len
, hlen
, skb_headlen(skb
),
2750 skb_shinfo(skb
)->gso_size
);
2752 tx_start_bd
->bd_flags
.as_bitfield
|= ETH_TX_BD_FLAGS_SW_LSO
;
2754 if (unlikely(skb_headlen(skb
) > hlen
))
2755 bd_prod
= bnx2x_tx_split(bp
, txdata
, tx_buf
,
2758 if (!CHIP_IS_E1x(bp
))
2759 bnx2x_set_pbd_gso_e2(skb
, &pbd_e2_parsing_data
,
2762 bnx2x_set_pbd_gso(skb
, pbd_e1x
, xmit_type
);
2765 /* Set the PBD's parsing_data field if not zero
2766 * (for the chips newer than 57711).
2768 if (pbd_e2_parsing_data
)
2769 pbd_e2
->parsing_data
= cpu_to_le32(pbd_e2_parsing_data
);
2771 tx_data_bd
= (struct eth_tx_bd
*)tx_start_bd
;
2773 /* Handle fragmented skb */
2774 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
2775 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
2777 mapping
= dma_map_page(&bp
->pdev
->dev
, frag
->page
,
2778 frag
->page_offset
, frag
->size
,
2780 if (unlikely(dma_mapping_error(&bp
->pdev
->dev
, mapping
))) {
2782 DP(NETIF_MSG_TX_QUEUED
, "Unable to map page - "
2783 "dropping packet...\n");
2785 /* we need unmap all buffers already mapped
2787 * first_bd->nbd need to be properly updated
2788 * before call to bnx2x_free_tx_pkt
2790 first_bd
->nbd
= cpu_to_le16(nbd
);
2791 bnx2x_free_tx_pkt(bp
, txdata
,
2792 TX_BD(txdata
->tx_pkt_prod
));
2793 return NETDEV_TX_OK
;
2796 bd_prod
= TX_BD(NEXT_TX_IDX(bd_prod
));
2797 tx_data_bd
= &txdata
->tx_desc_ring
[bd_prod
].reg_bd
;
2798 if (total_pkt_bd
== NULL
)
2799 total_pkt_bd
= &txdata
->tx_desc_ring
[bd_prod
].reg_bd
;
2801 tx_data_bd
->addr_hi
= cpu_to_le32(U64_HI(mapping
));
2802 tx_data_bd
->addr_lo
= cpu_to_le32(U64_LO(mapping
));
2803 tx_data_bd
->nbytes
= cpu_to_le16(frag
->size
);
2804 le16_add_cpu(&pkt_size
, frag
->size
);
2807 DP(NETIF_MSG_TX_QUEUED
,
2808 "frag %d bd @%p addr (%x:%x) nbytes %d\n",
2809 i
, tx_data_bd
, tx_data_bd
->addr_hi
, tx_data_bd
->addr_lo
,
2810 le16_to_cpu(tx_data_bd
->nbytes
));
2813 DP(NETIF_MSG_TX_QUEUED
, "last bd @%p\n", tx_data_bd
);
2815 /* update with actual num BDs */
2816 first_bd
->nbd
= cpu_to_le16(nbd
);
2818 bd_prod
= TX_BD(NEXT_TX_IDX(bd_prod
));
2820 /* now send a tx doorbell, counting the next BD
2821 * if the packet contains or ends with it
2823 if (TX_BD_POFF(bd_prod
) < nbd
)
2826 /* total_pkt_bytes should be set on the first data BD if
2827 * it's not an LSO packet and there is more than one
2828 * data BD. In this case pkt_size is limited by an MTU value.
2829 * However we prefer to set it for an LSO packet (while we don't
2830 * have to) in order to save some CPU cycles in a none-LSO
2831 * case, when we much more care about them.
2833 if (total_pkt_bd
!= NULL
)
2834 total_pkt_bd
->total_pkt_bytes
= pkt_size
;
2837 DP(NETIF_MSG_TX_QUEUED
,
2838 "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u"
2839 " tcp_flags %x xsum %x seq %u hlen %u\n",
2840 pbd_e1x
, pbd_e1x
->global_data
, pbd_e1x
->ip_hlen_w
,
2841 pbd_e1x
->ip_id
, pbd_e1x
->lso_mss
, pbd_e1x
->tcp_flags
,
2842 pbd_e1x
->tcp_pseudo_csum
, pbd_e1x
->tcp_send_seq
,
2843 le16_to_cpu(pbd_e1x
->total_hlen_w
));
2845 DP(NETIF_MSG_TX_QUEUED
,
2846 "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n",
2847 pbd_e2
, pbd_e2
->dst_mac_addr_hi
, pbd_e2
->dst_mac_addr_mid
,
2848 pbd_e2
->dst_mac_addr_lo
, pbd_e2
->src_mac_addr_hi
,
2849 pbd_e2
->src_mac_addr_mid
, pbd_e2
->src_mac_addr_lo
,
2850 pbd_e2
->parsing_data
);
2851 DP(NETIF_MSG_TX_QUEUED
, "doorbell: nbd %d bd %u\n", nbd
, bd_prod
);
2853 txdata
->tx_pkt_prod
++;
2855 * Make sure that the BD data is updated before updating the producer
2856 * since FW might read the BD right after the producer is updated.
2857 * This is only applicable for weak-ordered memory model archs such
2858 * as IA-64. The following barrier is also mandatory since FW will
2859 * assumes packets must have BDs.
2863 txdata
->tx_db
.data
.prod
+= nbd
;
2866 DOORBELL(bp
, txdata
->cid
, txdata
->tx_db
.raw
);
2870 txdata
->tx_bd_prod
+= nbd
;
2872 if (unlikely(bnx2x_tx_avail(bp
, txdata
) < MAX_SKB_FRAGS
+ 3)) {
2873 netif_tx_stop_queue(txq
);
2875 /* paired memory barrier is in bnx2x_tx_int(), we have to keep
2876 * ordering of set_bit() in netif_tx_stop_queue() and read of
2880 fp
->eth_q_stats
.driver_xoff
++;
2881 if (bnx2x_tx_avail(bp
, txdata
) >= MAX_SKB_FRAGS
+ 3)
2882 netif_tx_wake_queue(txq
);
2886 return NETDEV_TX_OK
;
2890 * bnx2x_setup_tc - routine to configure net_device for multi tc
2892 * @netdev: net device to configure
2893 * @tc: number of traffic classes to enable
2895 * callback connected to the ndo_setup_tc function pointer
2897 int bnx2x_setup_tc(struct net_device
*dev
, u8 num_tc
)
2899 int cos
, prio
, count
, offset
;
2900 struct bnx2x
*bp
= netdev_priv(dev
);
2902 /* setup tc must be called under rtnl lock */
2905 /* no traffic classes requested. aborting */
2907 netdev_reset_tc(dev
);
2911 /* requested to support too many traffic classes */
2912 if (num_tc
> bp
->max_cos
) {
2913 DP(NETIF_MSG_TX_ERR
, "support for too many traffic classes"
2914 " requested: %d. max supported is %d",
2915 num_tc
, bp
->max_cos
);
2919 /* declare amount of supported traffic classes */
2920 if (netdev_set_num_tc(dev
, num_tc
)) {
2921 DP(NETIF_MSG_TX_ERR
, "failed to declare %d traffic classes",
2926 /* configure priority to traffic class mapping */
2927 for (prio
= 0; prio
< BNX2X_MAX_PRIORITY
; prio
++) {
2928 netdev_set_prio_tc_map(dev
, prio
, bp
->prio_to_cos
[prio
]);
2929 DP(BNX2X_MSG_SP
, "mapping priority %d to tc %d",
2930 prio
, bp
->prio_to_cos
[prio
]);
2934 /* Use this configuration to diffrentiate tc0 from other COSes
2935 This can be used for ets or pfc, and save the effort of setting
2936 up a multio class queue disc or negotiating DCBX with a switch
2937 netdev_set_prio_tc_map(dev, 0, 0);
2938 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d", 0, 0);
2939 for (prio = 1; prio < 16; prio++) {
2940 netdev_set_prio_tc_map(dev, prio, 1);
2941 DP(BNX2X_MSG_SP, "mapping priority %d to tc %d", prio, 1);
2944 /* configure traffic class to transmission queue mapping */
2945 for (cos
= 0; cos
< bp
->max_cos
; cos
++) {
2946 count
= BNX2X_NUM_ETH_QUEUES(bp
);
2947 offset
= cos
* MAX_TXQS_PER_COS
;
2948 netdev_set_tc_queue(dev
, cos
, count
, offset
);
2949 DP(BNX2X_MSG_SP
, "mapping tc %d to offset %d count %d",
2950 cos
, offset
, count
);
2956 /* called with rtnl_lock */
2957 int bnx2x_change_mac_addr(struct net_device
*dev
, void *p
)
2959 struct sockaddr
*addr
= p
;
2960 struct bnx2x
*bp
= netdev_priv(dev
);
2963 if (!is_valid_ether_addr((u8
*)(addr
->sa_data
)))
2966 if (netif_running(dev
)) {
2967 rc
= bnx2x_set_eth_mac(bp
, false);
2972 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
2974 if (netif_running(dev
))
2975 rc
= bnx2x_set_eth_mac(bp
, true);
2980 static void bnx2x_free_fp_mem_at(struct bnx2x
*bp
, int fp_index
)
2982 union host_hc_status_block
*sb
= &bnx2x_fp(bp
, fp_index
, status_blk
);
2983 struct bnx2x_fastpath
*fp
= &bp
->fp
[fp_index
];
2988 if (IS_FCOE_IDX(fp_index
)) {
2989 memset(sb
, 0, sizeof(union host_hc_status_block
));
2990 fp
->status_blk_mapping
= 0;
2995 if (!CHIP_IS_E1x(bp
))
2996 BNX2X_PCI_FREE(sb
->e2_sb
,
2997 bnx2x_fp(bp
, fp_index
,
2998 status_blk_mapping
),
2999 sizeof(struct host_hc_status_block_e2
));
3001 BNX2X_PCI_FREE(sb
->e1x_sb
,
3002 bnx2x_fp(bp
, fp_index
,
3003 status_blk_mapping
),
3004 sizeof(struct host_hc_status_block_e1x
));
3009 if (!skip_rx_queue(bp
, fp_index
)) {
3010 bnx2x_free_rx_bds(fp
);
3012 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3013 BNX2X_FREE(bnx2x_fp(bp
, fp_index
, rx_buf_ring
));
3014 BNX2X_PCI_FREE(bnx2x_fp(bp
, fp_index
, rx_desc_ring
),
3015 bnx2x_fp(bp
, fp_index
, rx_desc_mapping
),
3016 sizeof(struct eth_rx_bd
) * NUM_RX_BD
);
3018 BNX2X_PCI_FREE(bnx2x_fp(bp
, fp_index
, rx_comp_ring
),
3019 bnx2x_fp(bp
, fp_index
, rx_comp_mapping
),
3020 sizeof(struct eth_fast_path_rx_cqe
) *
3024 BNX2X_FREE(bnx2x_fp(bp
, fp_index
, rx_page_ring
));
3025 BNX2X_PCI_FREE(bnx2x_fp(bp
, fp_index
, rx_sge_ring
),
3026 bnx2x_fp(bp
, fp_index
, rx_sge_mapping
),
3027 BCM_PAGE_SIZE
* NUM_RX_SGE_PAGES
);
3031 if (!skip_tx_queue(bp
, fp_index
)) {
3032 /* fastpath tx rings: tx_buf tx_desc */
3033 for_each_cos_in_tx_queue(fp
, cos
) {
3034 struct bnx2x_fp_txdata
*txdata
= &fp
->txdata
[cos
];
3037 "freeing tx memory of fp %d cos %d cid %d",
3038 fp_index
, cos
, txdata
->cid
);
3040 BNX2X_FREE(txdata
->tx_buf_ring
);
3041 BNX2X_PCI_FREE(txdata
->tx_desc_ring
,
3042 txdata
->tx_desc_mapping
,
3043 sizeof(union eth_tx_bd_types
) * NUM_TX_BD
);
3046 /* end of fastpath */
3049 void bnx2x_free_fp_mem(struct bnx2x
*bp
)
3052 for_each_queue(bp
, i
)
3053 bnx2x_free_fp_mem_at(bp
, i
);
3056 static inline void set_sb_shortcuts(struct bnx2x
*bp
, int index
)
3058 union host_hc_status_block status_blk
= bnx2x_fp(bp
, index
, status_blk
);
3059 if (!CHIP_IS_E1x(bp
)) {
3060 bnx2x_fp(bp
, index
, sb_index_values
) =
3061 (__le16
*)status_blk
.e2_sb
->sb
.index_values
;
3062 bnx2x_fp(bp
, index
, sb_running_index
) =
3063 (__le16
*)status_blk
.e2_sb
->sb
.running_index
;
3065 bnx2x_fp(bp
, index
, sb_index_values
) =
3066 (__le16
*)status_blk
.e1x_sb
->sb
.index_values
;
3067 bnx2x_fp(bp
, index
, sb_running_index
) =
3068 (__le16
*)status_blk
.e1x_sb
->sb
.running_index
;
3072 static int bnx2x_alloc_fp_mem_at(struct bnx2x
*bp
, int index
)
3074 union host_hc_status_block
*sb
;
3075 struct bnx2x_fastpath
*fp
= &bp
->fp
[index
];
3079 /* if rx_ring_size specified - use it */
3080 int rx_ring_size
= bp
->rx_ring_size
? bp
->rx_ring_size
:
3081 MAX_RX_AVAIL
/BNX2X_NUM_RX_QUEUES(bp
);
3083 /* allocate at least number of buffers required by FW */
3084 rx_ring_size
= max_t(int, bp
->disable_tpa
? MIN_RX_SIZE_NONTPA
:
3089 sb
= &bnx2x_fp(bp
, index
, status_blk
);
3091 if (!IS_FCOE_IDX(index
)) {
3094 if (!CHIP_IS_E1x(bp
))
3095 BNX2X_PCI_ALLOC(sb
->e2_sb
,
3096 &bnx2x_fp(bp
, index
, status_blk_mapping
),
3097 sizeof(struct host_hc_status_block_e2
));
3099 BNX2X_PCI_ALLOC(sb
->e1x_sb
,
3100 &bnx2x_fp(bp
, index
, status_blk_mapping
),
3101 sizeof(struct host_hc_status_block_e1x
));
3106 /* FCoE Queue uses Default SB and doesn't ACK the SB, thus no need to
3107 * set shortcuts for it.
3109 if (!IS_FCOE_IDX(index
))
3110 set_sb_shortcuts(bp
, index
);
3113 if (!skip_tx_queue(bp
, index
)) {
3114 /* fastpath tx rings: tx_buf tx_desc */
3115 for_each_cos_in_tx_queue(fp
, cos
) {
3116 struct bnx2x_fp_txdata
*txdata
= &fp
->txdata
[cos
];
3118 DP(BNX2X_MSG_SP
, "allocating tx memory of "
3122 BNX2X_ALLOC(txdata
->tx_buf_ring
,
3123 sizeof(struct sw_tx_bd
) * NUM_TX_BD
);
3124 BNX2X_PCI_ALLOC(txdata
->tx_desc_ring
,
3125 &txdata
->tx_desc_mapping
,
3126 sizeof(union eth_tx_bd_types
) * NUM_TX_BD
);
3131 if (!skip_rx_queue(bp
, index
)) {
3132 /* fastpath rx rings: rx_buf rx_desc rx_comp */
3133 BNX2X_ALLOC(bnx2x_fp(bp
, index
, rx_buf_ring
),
3134 sizeof(struct sw_rx_bd
) * NUM_RX_BD
);
3135 BNX2X_PCI_ALLOC(bnx2x_fp(bp
, index
, rx_desc_ring
),
3136 &bnx2x_fp(bp
, index
, rx_desc_mapping
),
3137 sizeof(struct eth_rx_bd
) * NUM_RX_BD
);
3139 BNX2X_PCI_ALLOC(bnx2x_fp(bp
, index
, rx_comp_ring
),
3140 &bnx2x_fp(bp
, index
, rx_comp_mapping
),
3141 sizeof(struct eth_fast_path_rx_cqe
) *
3145 BNX2X_ALLOC(bnx2x_fp(bp
, index
, rx_page_ring
),
3146 sizeof(struct sw_rx_page
) * NUM_RX_SGE
);
3147 BNX2X_PCI_ALLOC(bnx2x_fp(bp
, index
, rx_sge_ring
),
3148 &bnx2x_fp(bp
, index
, rx_sge_mapping
),
3149 BCM_PAGE_SIZE
* NUM_RX_SGE_PAGES
);
3151 bnx2x_set_next_page_rx_bd(fp
);
3154 bnx2x_set_next_page_rx_cq(fp
);
3157 ring_size
= bnx2x_alloc_rx_bds(fp
, rx_ring_size
);
3158 if (ring_size
< rx_ring_size
)
3164 /* handles low memory cases */
3166 BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n",
3168 /* FW will drop all packets if queue is not big enough,
3169 * In these cases we disable the queue
3170 * Min size is different for OOO, TPA and non-TPA queues
3172 if (ring_size
< (fp
->disable_tpa
?
3173 MIN_RX_SIZE_NONTPA
: MIN_RX_SIZE_TPA
)) {
3174 /* release memory allocated for this queue */
3175 bnx2x_free_fp_mem_at(bp
, index
);
3181 int bnx2x_alloc_fp_mem(struct bnx2x
*bp
)
3186 * 1. Allocate FP for leading - fatal if error
3187 * 2. {CNIC} Allocate FCoE FP - fatal if error
3188 * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
3189 * 4. Allocate RSS - fix number of queues if error
3193 if (bnx2x_alloc_fp_mem_at(bp
, 0))
3199 if (bnx2x_alloc_fp_mem_at(bp
, FCOE_IDX
))
3200 /* we will fail load process instead of mark
3207 for_each_nondefault_eth_queue(bp
, i
)
3208 if (bnx2x_alloc_fp_mem_at(bp
, i
))
3211 /* handle memory failures */
3212 if (i
!= BNX2X_NUM_ETH_QUEUES(bp
)) {
3213 int delta
= BNX2X_NUM_ETH_QUEUES(bp
) - i
;
3218 * move non eth FPs next to last eth FP
3219 * must be done in that order
3220 * FCOE_IDX < FWD_IDX < OOO_IDX
3223 /* move FCoE fp even NO_FCOE_FLAG is on */
3224 bnx2x_move_fp(bp
, FCOE_IDX
, FCOE_IDX
- delta
);
3226 bp
->num_queues
-= delta
;
3227 BNX2X_ERR("Adjusted num of queues from %d to %d\n",
3228 bp
->num_queues
+ delta
, bp
->num_queues
);
3234 void bnx2x_free_mem_bp(struct bnx2x
*bp
)
3237 kfree(bp
->msix_table
);
3241 int __devinit
bnx2x_alloc_mem_bp(struct bnx2x
*bp
)
3243 struct bnx2x_fastpath
*fp
;
3244 struct msix_entry
*tbl
;
3245 struct bnx2x_ilt
*ilt
;
3246 int msix_table_size
= 0;
3249 * The biggest MSI-X table we might need is as a maximum number of fast
3250 * path IGU SBs plus default SB (for PF).
3252 msix_table_size
= bp
->igu_sb_cnt
+ 1;
3254 /* fp array: RSS plus CNIC related L2 queues */
3255 fp
= kzalloc((BNX2X_MAX_RSS_COUNT(bp
) + NON_ETH_CONTEXT_USE
) *
3256 sizeof(*fp
), GFP_KERNEL
);
3262 tbl
= kzalloc(msix_table_size
* sizeof(*tbl
), GFP_KERNEL
);
3265 bp
->msix_table
= tbl
;
3268 ilt
= kzalloc(sizeof(*ilt
), GFP_KERNEL
);
3275 bnx2x_free_mem_bp(bp
);
3280 int bnx2x_reload_if_running(struct net_device
*dev
)
3282 struct bnx2x
*bp
= netdev_priv(dev
);
3284 if (unlikely(!netif_running(dev
)))
3287 bnx2x_nic_unload(bp
, UNLOAD_NORMAL
);
3288 return bnx2x_nic_load(bp
, LOAD_NORMAL
);
3291 int bnx2x_get_cur_phy_idx(struct bnx2x
*bp
)
3293 u32 sel_phy_idx
= 0;
3294 if (bp
->link_params
.num_phys
<= 1)
3297 if (bp
->link_vars
.link_up
) {
3298 sel_phy_idx
= EXT_PHY1
;
3299 /* In case link is SERDES, check if the EXT_PHY2 is the one */
3300 if ((bp
->link_vars
.link_status
& LINK_STATUS_SERDES_LINK
) &&
3301 (bp
->link_params
.phy
[EXT_PHY2
].supported
& SUPPORTED_FIBRE
))
3302 sel_phy_idx
= EXT_PHY2
;
3305 switch (bnx2x_phy_selection(&bp
->link_params
)) {
3306 case PORT_HW_CFG_PHY_SELECTION_HARDWARE_DEFAULT
:
3307 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY
:
3308 case PORT_HW_CFG_PHY_SELECTION_FIRST_PHY_PRIORITY
:
3309 sel_phy_idx
= EXT_PHY1
;
3311 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY
:
3312 case PORT_HW_CFG_PHY_SELECTION_SECOND_PHY_PRIORITY
:
3313 sel_phy_idx
= EXT_PHY2
;
3321 int bnx2x_get_link_cfg_idx(struct bnx2x
*bp
)
3323 u32 sel_phy_idx
= bnx2x_get_cur_phy_idx(bp
);
3325 * The selected actived PHY is always after swapping (in case PHY
3326 * swapping is enabled). So when swapping is enabled, we need to reverse
3330 if (bp
->link_params
.multi_phy_config
&
3331 PORT_HW_CFG_PHY_SWAPPED_ENABLED
) {
3332 if (sel_phy_idx
== EXT_PHY1
)
3333 sel_phy_idx
= EXT_PHY2
;
3334 else if (sel_phy_idx
== EXT_PHY2
)
3335 sel_phy_idx
= EXT_PHY1
;
3337 return LINK_CONFIG_IDX(sel_phy_idx
);
3340 #if defined(NETDEV_FCOE_WWNN) && defined(BCM_CNIC)
3341 int bnx2x_fcoe_get_wwn(struct net_device
*dev
, u64
*wwn
, int type
)
3343 struct bnx2x
*bp
= netdev_priv(dev
);
3344 struct cnic_eth_dev
*cp
= &bp
->cnic_eth_dev
;
3347 case NETDEV_FCOE_WWNN
:
3348 *wwn
= HILO_U64(cp
->fcoe_wwn_node_name_hi
,
3349 cp
->fcoe_wwn_node_name_lo
);
3351 case NETDEV_FCOE_WWPN
:
3352 *wwn
= HILO_U64(cp
->fcoe_wwn_port_name_hi
,
3353 cp
->fcoe_wwn_port_name_lo
);
3363 /* called with rtnl_lock */
3364 int bnx2x_change_mtu(struct net_device
*dev
, int new_mtu
)
3366 struct bnx2x
*bp
= netdev_priv(dev
);
3368 if (bp
->recovery_state
!= BNX2X_RECOVERY_DONE
) {
3369 printk(KERN_ERR
"Handling parity error recovery. Try again later\n");
3373 if ((new_mtu
> ETH_MAX_JUMBO_PACKET_SIZE
) ||
3374 ((new_mtu
+ ETH_HLEN
) < ETH_MIN_PACKET_SIZE
))
3377 /* This does not race with packet allocation
3378 * because the actual alloc size is
3379 * only updated as part of load
3383 return bnx2x_reload_if_running(dev
);
3386 u32
bnx2x_fix_features(struct net_device
*dev
, u32 features
)
3388 struct bnx2x
*bp
= netdev_priv(dev
);
3390 /* TPA requires Rx CSUM offloading */
3391 if (!(features
& NETIF_F_RXCSUM
) || bp
->disable_tpa
)
3392 features
&= ~NETIF_F_LRO
;
3397 int bnx2x_set_features(struct net_device
*dev
, u32 features
)
3399 struct bnx2x
*bp
= netdev_priv(dev
);
3400 u32 flags
= bp
->flags
;
3401 bool bnx2x_reload
= false;
3403 if (features
& NETIF_F_LRO
)
3404 flags
|= TPA_ENABLE_FLAG
;
3406 flags
&= ~TPA_ENABLE_FLAG
;
3408 if (features
& NETIF_F_LOOPBACK
) {
3409 if (bp
->link_params
.loopback_mode
!= LOOPBACK_BMAC
) {
3410 bp
->link_params
.loopback_mode
= LOOPBACK_BMAC
;
3411 bnx2x_reload
= true;
3414 if (bp
->link_params
.loopback_mode
!= LOOPBACK_NONE
) {
3415 bp
->link_params
.loopback_mode
= LOOPBACK_NONE
;
3416 bnx2x_reload
= true;
3420 if (flags
^ bp
->flags
) {
3422 bnx2x_reload
= true;
3426 if (bp
->recovery_state
== BNX2X_RECOVERY_DONE
)
3427 return bnx2x_reload_if_running(dev
);
3428 /* else: bnx2x_nic_load() will be called at end of recovery */
3434 void bnx2x_tx_timeout(struct net_device
*dev
)
3436 struct bnx2x
*bp
= netdev_priv(dev
);
3438 #ifdef BNX2X_STOP_ON_ERROR
3443 smp_mb__before_clear_bit();
3444 set_bit(BNX2X_SP_RTNL_TX_TIMEOUT
, &bp
->sp_rtnl_state
);
3445 smp_mb__after_clear_bit();
3447 /* This allows the netif to be shutdown gracefully before resetting */
3448 schedule_delayed_work(&bp
->sp_rtnl_task
, 0);
3451 int bnx2x_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3453 struct net_device
*dev
= pci_get_drvdata(pdev
);
3457 dev_err(&pdev
->dev
, "BAD net device from bnx2x_init_one\n");
3460 bp
= netdev_priv(dev
);
3464 pci_save_state(pdev
);
3466 if (!netif_running(dev
)) {
3471 netif_device_detach(dev
);
3473 bnx2x_nic_unload(bp
, UNLOAD_CLOSE
);
3475 bnx2x_set_power_state(bp
, pci_choose_state(pdev
, state
));
3482 int bnx2x_resume(struct pci_dev
*pdev
)
3484 struct net_device
*dev
= pci_get_drvdata(pdev
);
3489 dev_err(&pdev
->dev
, "BAD net device from bnx2x_init_one\n");
3492 bp
= netdev_priv(dev
);
3494 if (bp
->recovery_state
!= BNX2X_RECOVERY_DONE
) {
3495 printk(KERN_ERR
"Handling parity error recovery. Try again later\n");
3501 pci_restore_state(pdev
);
3503 if (!netif_running(dev
)) {
3508 bnx2x_set_power_state(bp
, PCI_D0
);
3509 netif_device_attach(dev
);
3511 /* Since the chip was reset, clear the FW sequence number */
3513 rc
= bnx2x_nic_load(bp
, LOAD_OPEN
);
3521 void bnx2x_set_ctx_validation(struct bnx2x
*bp
, struct eth_context
*cxt
,
3524 /* ustorm cxt validation */
3525 cxt
->ustorm_ag_context
.cdu_usage
=
3526 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp
, cid
),
3527 CDU_REGION_NUMBER_UCM_AG
, ETH_CONNECTION_TYPE
);
3528 /* xcontext validation */
3529 cxt
->xstorm_ag_context
.cdu_reserved
=
3530 CDU_RSRVD_VALUE_TYPE_A(HW_CID(bp
, cid
),
3531 CDU_REGION_NUMBER_XCM_AG
, ETH_CONNECTION_TYPE
);
3534 static inline void storm_memset_hc_timeout(struct bnx2x
*bp
, u8 port
,
3535 u8 fw_sb_id
, u8 sb_index
,
3539 u32 addr
= BAR_CSTRORM_INTMEM
+
3540 CSTORM_STATUS_BLOCK_DATA_TIMEOUT_OFFSET(fw_sb_id
, sb_index
);
3541 REG_WR8(bp
, addr
, ticks
);
3542 DP(NETIF_MSG_HW
, "port %x fw_sb_id %d sb_index %d ticks %d\n",
3543 port
, fw_sb_id
, sb_index
, ticks
);
3546 static inline void storm_memset_hc_disable(struct bnx2x
*bp
, u8 port
,
3547 u16 fw_sb_id
, u8 sb_index
,
3550 u32 enable_flag
= disable
? 0 : (1 << HC_INDEX_DATA_HC_ENABLED_SHIFT
);
3551 u32 addr
= BAR_CSTRORM_INTMEM
+
3552 CSTORM_STATUS_BLOCK_DATA_FLAGS_OFFSET(fw_sb_id
, sb_index
);
3553 u16 flags
= REG_RD16(bp
, addr
);
3555 flags
&= ~HC_INDEX_DATA_HC_ENABLED
;
3556 flags
|= enable_flag
;
3557 REG_WR16(bp
, addr
, flags
);
3558 DP(NETIF_MSG_HW
, "port %x fw_sb_id %d sb_index %d disable %d\n",
3559 port
, fw_sb_id
, sb_index
, disable
);
3562 void bnx2x_update_coalesce_sb_index(struct bnx2x
*bp
, u8 fw_sb_id
,
3563 u8 sb_index
, u8 disable
, u16 usec
)
3565 int port
= BP_PORT(bp
);
3566 u8 ticks
= usec
/ BNX2X_BTR
;
3568 storm_memset_hc_timeout(bp
, port
, fw_sb_id
, sb_index
, ticks
);
3570 disable
= disable
? 1 : (usec
? 0 : 1);
3571 storm_memset_hc_disable(bp
, port
, fw_sb_id
, sb_index
, disable
);