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1 | /* bnx2x_cmn.c: Broadcom Everest network driver. |
2 | * | |
3 | * Copyright (c) 2007-2010 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 | ||
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/ip.h> | |
f2e0899f | 21 | #include <net/ipv6.h> |
7f3e01fe | 22 | #include <net/ip6_checksum.h> |
6891dd25 | 23 | #include <linux/firmware.h> |
9f6c9258 DK |
24 | #include "bnx2x_cmn.h" |
25 | ||
26 | #ifdef BCM_VLAN | |
27 | #include <linux/if_vlan.h> | |
28 | #endif | |
29 | ||
523224a3 DK |
30 | #include "bnx2x_init.h" |
31 | ||
9f6c9258 DK |
32 | static int bnx2x_poll(struct napi_struct *napi, int budget); |
33 | ||
34 | /* free skb in the packet ring at pos idx | |
35 | * return idx of last bd freed | |
36 | */ | |
37 | static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp, | |
38 | u16 idx) | |
39 | { | |
40 | struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx]; | |
41 | struct eth_tx_start_bd *tx_start_bd; | |
42 | struct eth_tx_bd *tx_data_bd; | |
43 | struct sk_buff *skb = tx_buf->skb; | |
44 | u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons; | |
45 | int nbd; | |
46 | ||
47 | /* prefetch skb end pointer to speedup dev_kfree_skb() */ | |
48 | prefetch(&skb->end); | |
49 | ||
50 | DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n", | |
51 | idx, tx_buf, skb); | |
52 | ||
53 | /* unmap first bd */ | |
54 | DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx); | |
55 | tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd; | |
56 | dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd), | |
4bca60f4 | 57 | BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE); |
9f6c9258 DK |
58 | |
59 | nbd = le16_to_cpu(tx_start_bd->nbd) - 1; | |
60 | #ifdef BNX2X_STOP_ON_ERROR | |
61 | if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) { | |
62 | BNX2X_ERR("BAD nbd!\n"); | |
63 | bnx2x_panic(); | |
64 | } | |
65 | #endif | |
66 | new_cons = nbd + tx_buf->first_bd; | |
67 | ||
68 | /* Get the next bd */ | |
69 | bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); | |
70 | ||
71 | /* Skip a parse bd... */ | |
72 | --nbd; | |
73 | bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); | |
74 | ||
75 | /* ...and the TSO split header bd since they have no mapping */ | |
76 | if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) { | |
77 | --nbd; | |
78 | bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); | |
79 | } | |
80 | ||
81 | /* now free frags */ | |
82 | while (nbd > 0) { | |
83 | ||
84 | DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx); | |
85 | tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd; | |
86 | dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd), | |
87 | BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); | |
88 | if (--nbd) | |
89 | bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); | |
90 | } | |
91 | ||
92 | /* release skb */ | |
93 | WARN_ON(!skb); | |
94 | dev_kfree_skb(skb); | |
95 | tx_buf->first_bd = 0; | |
96 | tx_buf->skb = NULL; | |
97 | ||
98 | return new_cons; | |
99 | } | |
100 | ||
101 | int bnx2x_tx_int(struct bnx2x_fastpath *fp) | |
102 | { | |
103 | struct bnx2x *bp = fp->bp; | |
104 | struct netdev_queue *txq; | |
105 | u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons; | |
106 | ||
107 | #ifdef BNX2X_STOP_ON_ERROR | |
108 | if (unlikely(bp->panic)) | |
109 | return -1; | |
110 | #endif | |
111 | ||
112 | txq = netdev_get_tx_queue(bp->dev, fp->index); | |
113 | hw_cons = le16_to_cpu(*fp->tx_cons_sb); | |
114 | sw_cons = fp->tx_pkt_cons; | |
115 | ||
116 | while (sw_cons != hw_cons) { | |
117 | u16 pkt_cons; | |
118 | ||
119 | pkt_cons = TX_BD(sw_cons); | |
120 | ||
f2e0899f DK |
121 | DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u " |
122 | " pkt_cons %u\n", | |
123 | fp->index, hw_cons, sw_cons, pkt_cons); | |
9f6c9258 | 124 | |
9f6c9258 DK |
125 | bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons); |
126 | sw_cons++; | |
127 | } | |
128 | ||
129 | fp->tx_pkt_cons = sw_cons; | |
130 | fp->tx_bd_cons = bd_cons; | |
131 | ||
132 | /* Need to make the tx_bd_cons update visible to start_xmit() | |
133 | * before checking for netif_tx_queue_stopped(). Without the | |
134 | * memory barrier, there is a small possibility that | |
135 | * start_xmit() will miss it and cause the queue to be stopped | |
136 | * forever. | |
137 | */ | |
138 | smp_mb(); | |
139 | ||
140 | /* TBD need a thresh? */ | |
141 | if (unlikely(netif_tx_queue_stopped(txq))) { | |
142 | /* Taking tx_lock() is needed to prevent reenabling the queue | |
143 | * while it's empty. This could have happen if rx_action() gets | |
144 | * suspended in bnx2x_tx_int() after the condition before | |
145 | * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()): | |
146 | * | |
147 | * stops the queue->sees fresh tx_bd_cons->releases the queue-> | |
148 | * sends some packets consuming the whole queue again-> | |
149 | * stops the queue | |
150 | */ | |
151 | ||
152 | __netif_tx_lock(txq, smp_processor_id()); | |
153 | ||
154 | if ((netif_tx_queue_stopped(txq)) && | |
155 | (bp->state == BNX2X_STATE_OPEN) && | |
156 | (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)) | |
157 | netif_tx_wake_queue(txq); | |
158 | ||
159 | __netif_tx_unlock(txq); | |
160 | } | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp, | |
165 | u16 idx) | |
166 | { | |
167 | u16 last_max = fp->last_max_sge; | |
168 | ||
169 | if (SUB_S16(idx, last_max) > 0) | |
170 | fp->last_max_sge = idx; | |
171 | } | |
172 | ||
173 | static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp, | |
174 | struct eth_fast_path_rx_cqe *fp_cqe) | |
175 | { | |
176 | struct bnx2x *bp = fp->bp; | |
177 | u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) - | |
178 | le16_to_cpu(fp_cqe->len_on_bd)) >> | |
179 | SGE_PAGE_SHIFT; | |
180 | u16 last_max, last_elem, first_elem; | |
181 | u16 delta = 0; | |
182 | u16 i; | |
183 | ||
184 | if (!sge_len) | |
185 | return; | |
186 | ||
187 | /* First mark all used pages */ | |
188 | for (i = 0; i < sge_len; i++) | |
523224a3 DK |
189 | SGE_MASK_CLEAR_BIT(fp, |
190 | RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[i]))); | |
9f6c9258 DK |
191 | |
192 | DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n", | |
523224a3 | 193 | sge_len - 1, le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1])); |
9f6c9258 DK |
194 | |
195 | /* Here we assume that the last SGE index is the biggest */ | |
196 | prefetch((void *)(fp->sge_mask)); | |
523224a3 DK |
197 | bnx2x_update_last_max_sge(fp, |
198 | le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1])); | |
9f6c9258 DK |
199 | |
200 | last_max = RX_SGE(fp->last_max_sge); | |
201 | last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT; | |
202 | first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT; | |
203 | ||
204 | /* If ring is not full */ | |
205 | if (last_elem + 1 != first_elem) | |
206 | last_elem++; | |
207 | ||
208 | /* Now update the prod */ | |
209 | for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) { | |
210 | if (likely(fp->sge_mask[i])) | |
211 | break; | |
212 | ||
213 | fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK; | |
214 | delta += RX_SGE_MASK_ELEM_SZ; | |
215 | } | |
216 | ||
217 | if (delta > 0) { | |
218 | fp->rx_sge_prod += delta; | |
219 | /* clear page-end entries */ | |
220 | bnx2x_clear_sge_mask_next_elems(fp); | |
221 | } | |
222 | ||
223 | DP(NETIF_MSG_RX_STATUS, | |
224 | "fp->last_max_sge = %d fp->rx_sge_prod = %d\n", | |
225 | fp->last_max_sge, fp->rx_sge_prod); | |
226 | } | |
227 | ||
228 | static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue, | |
229 | struct sk_buff *skb, u16 cons, u16 prod) | |
230 | { | |
231 | struct bnx2x *bp = fp->bp; | |
232 | struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; | |
233 | struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; | |
234 | struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; | |
235 | dma_addr_t mapping; | |
236 | ||
237 | /* move empty skb from pool to prod and map it */ | |
238 | prod_rx_buf->skb = fp->tpa_pool[queue].skb; | |
239 | mapping = dma_map_single(&bp->pdev->dev, fp->tpa_pool[queue].skb->data, | |
240 | bp->rx_buf_size, DMA_FROM_DEVICE); | |
241 | dma_unmap_addr_set(prod_rx_buf, mapping, mapping); | |
242 | ||
243 | /* move partial skb from cons to pool (don't unmap yet) */ | |
244 | fp->tpa_pool[queue] = *cons_rx_buf; | |
245 | ||
246 | /* mark bin state as start - print error if current state != stop */ | |
247 | if (fp->tpa_state[queue] != BNX2X_TPA_STOP) | |
248 | BNX2X_ERR("start of bin not in stop [%d]\n", queue); | |
249 | ||
250 | fp->tpa_state[queue] = BNX2X_TPA_START; | |
251 | ||
252 | /* point prod_bd to new skb */ | |
253 | prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); | |
254 | prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); | |
255 | ||
256 | #ifdef BNX2X_STOP_ON_ERROR | |
257 | fp->tpa_queue_used |= (1 << queue); | |
258 | #ifdef _ASM_GENERIC_INT_L64_H | |
259 | DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n", | |
260 | #else | |
261 | DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n", | |
262 | #endif | |
263 | fp->tpa_queue_used); | |
264 | #endif | |
265 | } | |
266 | ||
267 | static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp, | |
268 | struct sk_buff *skb, | |
269 | struct eth_fast_path_rx_cqe *fp_cqe, | |
270 | u16 cqe_idx) | |
271 | { | |
272 | struct sw_rx_page *rx_pg, old_rx_pg; | |
273 | u16 len_on_bd = le16_to_cpu(fp_cqe->len_on_bd); | |
274 | u32 i, frag_len, frag_size, pages; | |
275 | int err; | |
276 | int j; | |
277 | ||
278 | frag_size = le16_to_cpu(fp_cqe->pkt_len) - len_on_bd; | |
279 | pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT; | |
280 | ||
281 | /* This is needed in order to enable forwarding support */ | |
282 | if (frag_size) | |
283 | skb_shinfo(skb)->gso_size = min((u32)SGE_PAGE_SIZE, | |
284 | max(frag_size, (u32)len_on_bd)); | |
285 | ||
286 | #ifdef BNX2X_STOP_ON_ERROR | |
287 | if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) { | |
288 | BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n", | |
289 | pages, cqe_idx); | |
290 | BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n", | |
291 | fp_cqe->pkt_len, len_on_bd); | |
292 | bnx2x_panic(); | |
293 | return -EINVAL; | |
294 | } | |
295 | #endif | |
296 | ||
297 | /* Run through the SGL and compose the fragmented skb */ | |
298 | for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) { | |
523224a3 DK |
299 | u16 sge_idx = |
300 | RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[j])); | |
9f6c9258 DK |
301 | |
302 | /* FW gives the indices of the SGE as if the ring is an array | |
303 | (meaning that "next" element will consume 2 indices) */ | |
304 | frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE)); | |
305 | rx_pg = &fp->rx_page_ring[sge_idx]; | |
306 | old_rx_pg = *rx_pg; | |
307 | ||
308 | /* If we fail to allocate a substitute page, we simply stop | |
309 | where we are and drop the whole packet */ | |
310 | err = bnx2x_alloc_rx_sge(bp, fp, sge_idx); | |
311 | if (unlikely(err)) { | |
312 | fp->eth_q_stats.rx_skb_alloc_failed++; | |
313 | return err; | |
314 | } | |
315 | ||
316 | /* Unmap the page as we r going to pass it to the stack */ | |
317 | dma_unmap_page(&bp->pdev->dev, | |
318 | dma_unmap_addr(&old_rx_pg, mapping), | |
319 | SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); | |
320 | ||
321 | /* Add one frag and update the appropriate fields in the skb */ | |
322 | skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len); | |
323 | ||
324 | skb->data_len += frag_len; | |
325 | skb->truesize += frag_len; | |
326 | skb->len += frag_len; | |
327 | ||
328 | frag_size -= frag_len; | |
329 | } | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp, | |
335 | u16 queue, int pad, int len, union eth_rx_cqe *cqe, | |
336 | u16 cqe_idx) | |
337 | { | |
338 | struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue]; | |
339 | struct sk_buff *skb = rx_buf->skb; | |
340 | /* alloc new skb */ | |
341 | struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, bp->rx_buf_size); | |
342 | ||
343 | /* Unmap skb in the pool anyway, as we are going to change | |
344 | pool entry status to BNX2X_TPA_STOP even if new skb allocation | |
345 | fails. */ | |
346 | dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping), | |
347 | bp->rx_buf_size, DMA_FROM_DEVICE); | |
348 | ||
349 | if (likely(new_skb)) { | |
350 | /* fix ip xsum and give it to the stack */ | |
351 | /* (no need to map the new skb) */ | |
352 | #ifdef BCM_VLAN | |
353 | int is_vlan_cqe = | |
354 | (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & | |
355 | PARSING_FLAGS_VLAN); | |
356 | int is_not_hwaccel_vlan_cqe = | |
357 | (is_vlan_cqe && (!(bp->flags & HW_VLAN_RX_FLAG))); | |
358 | #endif | |
359 | ||
360 | prefetch(skb); | |
361 | prefetch(((char *)(skb)) + 128); | |
362 | ||
363 | #ifdef BNX2X_STOP_ON_ERROR | |
364 | if (pad + len > bp->rx_buf_size) { | |
365 | BNX2X_ERR("skb_put is about to fail... " | |
366 | "pad %d len %d rx_buf_size %d\n", | |
367 | pad, len, bp->rx_buf_size); | |
368 | bnx2x_panic(); | |
369 | return; | |
370 | } | |
371 | #endif | |
372 | ||
373 | skb_reserve(skb, pad); | |
374 | skb_put(skb, len); | |
375 | ||
376 | skb->protocol = eth_type_trans(skb, bp->dev); | |
377 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
378 | ||
379 | { | |
380 | struct iphdr *iph; | |
381 | ||
382 | iph = (struct iphdr *)skb->data; | |
383 | #ifdef BCM_VLAN | |
384 | /* If there is no Rx VLAN offloading - | |
385 | take VLAN tag into an account */ | |
386 | if (unlikely(is_not_hwaccel_vlan_cqe)) | |
387 | iph = (struct iphdr *)((u8 *)iph + VLAN_HLEN); | |
388 | #endif | |
389 | iph->check = 0; | |
390 | iph->check = ip_fast_csum((u8 *)iph, iph->ihl); | |
391 | } | |
392 | ||
393 | if (!bnx2x_fill_frag_skb(bp, fp, skb, | |
394 | &cqe->fast_path_cqe, cqe_idx)) { | |
395 | #ifdef BCM_VLAN | |
523224a3 DK |
396 | if ((bp->vlgrp != NULL) && |
397 | (le16_to_cpu(cqe->fast_path_cqe. | |
398 | pars_flags.flags) & PARSING_FLAGS_VLAN)) | |
9f6c9258 DK |
399 | vlan_gro_receive(&fp->napi, bp->vlgrp, |
400 | le16_to_cpu(cqe->fast_path_cqe. | |
401 | vlan_tag), skb); | |
402 | else | |
403 | #endif | |
404 | napi_gro_receive(&fp->napi, skb); | |
405 | } else { | |
406 | DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages" | |
407 | " - dropping packet!\n"); | |
408 | dev_kfree_skb(skb); | |
409 | } | |
410 | ||
411 | ||
412 | /* put new skb in bin */ | |
413 | fp->tpa_pool[queue].skb = new_skb; | |
414 | ||
415 | } else { | |
416 | /* else drop the packet and keep the buffer in the bin */ | |
417 | DP(NETIF_MSG_RX_STATUS, | |
418 | "Failed to allocate new skb - dropping packet!\n"); | |
419 | fp->eth_q_stats.rx_skb_alloc_failed++; | |
420 | } | |
421 | ||
422 | fp->tpa_state[queue] = BNX2X_TPA_STOP; | |
423 | } | |
424 | ||
425 | /* Set Toeplitz hash value in the skb using the value from the | |
426 | * CQE (calculated by HW). | |
427 | */ | |
428 | static inline void bnx2x_set_skb_rxhash(struct bnx2x *bp, union eth_rx_cqe *cqe, | |
429 | struct sk_buff *skb) | |
430 | { | |
431 | /* Set Toeplitz hash from CQE */ | |
432 | if ((bp->dev->features & NETIF_F_RXHASH) && | |
433 | (cqe->fast_path_cqe.status_flags & | |
434 | ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) | |
435 | skb->rxhash = | |
436 | le32_to_cpu(cqe->fast_path_cqe.rss_hash_result); | |
437 | } | |
438 | ||
439 | int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget) | |
440 | { | |
441 | struct bnx2x *bp = fp->bp; | |
442 | u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons; | |
443 | u16 hw_comp_cons, sw_comp_cons, sw_comp_prod; | |
444 | int rx_pkt = 0; | |
445 | ||
446 | #ifdef BNX2X_STOP_ON_ERROR | |
447 | if (unlikely(bp->panic)) | |
448 | return 0; | |
449 | #endif | |
450 | ||
451 | /* CQ "next element" is of the size of the regular element, | |
452 | that's why it's ok here */ | |
453 | hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb); | |
454 | if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) | |
455 | hw_comp_cons++; | |
456 | ||
457 | bd_cons = fp->rx_bd_cons; | |
458 | bd_prod = fp->rx_bd_prod; | |
459 | bd_prod_fw = bd_prod; | |
460 | sw_comp_cons = fp->rx_comp_cons; | |
461 | sw_comp_prod = fp->rx_comp_prod; | |
462 | ||
463 | /* Memory barrier necessary as speculative reads of the rx | |
464 | * buffer can be ahead of the index in the status block | |
465 | */ | |
466 | rmb(); | |
467 | ||
468 | DP(NETIF_MSG_RX_STATUS, | |
469 | "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n", | |
470 | fp->index, hw_comp_cons, sw_comp_cons); | |
471 | ||
472 | while (sw_comp_cons != hw_comp_cons) { | |
473 | struct sw_rx_bd *rx_buf = NULL; | |
474 | struct sk_buff *skb; | |
475 | union eth_rx_cqe *cqe; | |
476 | u8 cqe_fp_flags; | |
477 | u16 len, pad; | |
478 | ||
479 | comp_ring_cons = RCQ_BD(sw_comp_cons); | |
480 | bd_prod = RX_BD(bd_prod); | |
481 | bd_cons = RX_BD(bd_cons); | |
482 | ||
483 | /* Prefetch the page containing the BD descriptor | |
484 | at producer's index. It will be needed when new skb is | |
485 | allocated */ | |
486 | prefetch((void *)(PAGE_ALIGN((unsigned long) | |
487 | (&fp->rx_desc_ring[bd_prod])) - | |
488 | PAGE_SIZE + 1)); | |
489 | ||
490 | cqe = &fp->rx_comp_ring[comp_ring_cons]; | |
491 | cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; | |
492 | ||
493 | DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x" | |
494 | " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags), | |
495 | cqe_fp_flags, cqe->fast_path_cqe.status_flags, | |
496 | le32_to_cpu(cqe->fast_path_cqe.rss_hash_result), | |
497 | le16_to_cpu(cqe->fast_path_cqe.vlan_tag), | |
498 | le16_to_cpu(cqe->fast_path_cqe.pkt_len)); | |
499 | ||
500 | /* is this a slowpath msg? */ | |
501 | if (unlikely(CQE_TYPE(cqe_fp_flags))) { | |
502 | bnx2x_sp_event(fp, cqe); | |
503 | goto next_cqe; | |
504 | ||
505 | /* this is an rx packet */ | |
506 | } else { | |
507 | rx_buf = &fp->rx_buf_ring[bd_cons]; | |
508 | skb = rx_buf->skb; | |
509 | prefetch(skb); | |
510 | len = le16_to_cpu(cqe->fast_path_cqe.pkt_len); | |
511 | pad = cqe->fast_path_cqe.placement_offset; | |
512 | ||
513 | /* If CQE is marked both TPA_START and TPA_END | |
514 | it is a non-TPA CQE */ | |
515 | if ((!fp->disable_tpa) && | |
516 | (TPA_TYPE(cqe_fp_flags) != | |
517 | (TPA_TYPE_START | TPA_TYPE_END))) { | |
518 | u16 queue = cqe->fast_path_cqe.queue_index; | |
519 | ||
520 | if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_START) { | |
521 | DP(NETIF_MSG_RX_STATUS, | |
522 | "calling tpa_start on queue %d\n", | |
523 | queue); | |
524 | ||
525 | bnx2x_tpa_start(fp, queue, skb, | |
526 | bd_cons, bd_prod); | |
527 | ||
528 | /* Set Toeplitz hash for an LRO skb */ | |
529 | bnx2x_set_skb_rxhash(bp, cqe, skb); | |
530 | ||
531 | goto next_rx; | |
532 | } | |
533 | ||
534 | if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_END) { | |
535 | DP(NETIF_MSG_RX_STATUS, | |
536 | "calling tpa_stop on queue %d\n", | |
537 | queue); | |
538 | ||
539 | if (!BNX2X_RX_SUM_FIX(cqe)) | |
540 | BNX2X_ERR("STOP on none TCP " | |
541 | "data\n"); | |
542 | ||
543 | /* This is a size of the linear data | |
544 | on this skb */ | |
545 | len = le16_to_cpu(cqe->fast_path_cqe. | |
546 | len_on_bd); | |
547 | bnx2x_tpa_stop(bp, fp, queue, pad, | |
548 | len, cqe, comp_ring_cons); | |
549 | #ifdef BNX2X_STOP_ON_ERROR | |
550 | if (bp->panic) | |
551 | return 0; | |
552 | #endif | |
553 | ||
554 | bnx2x_update_sge_prod(fp, | |
555 | &cqe->fast_path_cqe); | |
556 | goto next_cqe; | |
557 | } | |
558 | } | |
559 | ||
560 | dma_sync_single_for_device(&bp->pdev->dev, | |
561 | dma_unmap_addr(rx_buf, mapping), | |
562 | pad + RX_COPY_THRESH, | |
563 | DMA_FROM_DEVICE); | |
564 | prefetch(((char *)(skb)) + 128); | |
565 | ||
566 | /* is this an error packet? */ | |
567 | if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) { | |
568 | DP(NETIF_MSG_RX_ERR, | |
569 | "ERROR flags %x rx packet %u\n", | |
570 | cqe_fp_flags, sw_comp_cons); | |
571 | fp->eth_q_stats.rx_err_discard_pkt++; | |
572 | goto reuse_rx; | |
573 | } | |
574 | ||
575 | /* Since we don't have a jumbo ring | |
576 | * copy small packets if mtu > 1500 | |
577 | */ | |
578 | if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) && | |
579 | (len <= RX_COPY_THRESH)) { | |
580 | struct sk_buff *new_skb; | |
581 | ||
582 | new_skb = netdev_alloc_skb(bp->dev, | |
583 | len + pad); | |
584 | if (new_skb == NULL) { | |
585 | DP(NETIF_MSG_RX_ERR, | |
586 | "ERROR packet dropped " | |
587 | "because of alloc failure\n"); | |
588 | fp->eth_q_stats.rx_skb_alloc_failed++; | |
589 | goto reuse_rx; | |
590 | } | |
591 | ||
592 | /* aligned copy */ | |
593 | skb_copy_from_linear_data_offset(skb, pad, | |
594 | new_skb->data + pad, len); | |
595 | skb_reserve(new_skb, pad); | |
596 | skb_put(new_skb, len); | |
597 | ||
749a8503 | 598 | bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod); |
9f6c9258 DK |
599 | |
600 | skb = new_skb; | |
601 | ||
602 | } else | |
603 | if (likely(bnx2x_alloc_rx_skb(bp, fp, bd_prod) == 0)) { | |
604 | dma_unmap_single(&bp->pdev->dev, | |
605 | dma_unmap_addr(rx_buf, mapping), | |
606 | bp->rx_buf_size, | |
607 | DMA_FROM_DEVICE); | |
608 | skb_reserve(skb, pad); | |
609 | skb_put(skb, len); | |
610 | ||
611 | } else { | |
612 | DP(NETIF_MSG_RX_ERR, | |
613 | "ERROR packet dropped because " | |
614 | "of alloc failure\n"); | |
615 | fp->eth_q_stats.rx_skb_alloc_failed++; | |
616 | reuse_rx: | |
749a8503 | 617 | bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod); |
9f6c9258 DK |
618 | goto next_rx; |
619 | } | |
620 | ||
621 | skb->protocol = eth_type_trans(skb, bp->dev); | |
622 | ||
623 | /* Set Toeplitz hash for a none-LRO skb */ | |
624 | bnx2x_set_skb_rxhash(bp, cqe, skb); | |
625 | ||
bc8acf2c | 626 | skb_checksum_none_assert(skb); |
9f6c9258 DK |
627 | if (bp->rx_csum) { |
628 | if (likely(BNX2X_RX_CSUM_OK(cqe))) | |
629 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
630 | else | |
631 | fp->eth_q_stats.hw_csum_err++; | |
632 | } | |
633 | } | |
634 | ||
635 | skb_record_rx_queue(skb, fp->index); | |
636 | ||
637 | #ifdef BCM_VLAN | |
638 | if ((bp->vlgrp != NULL) && (bp->flags & HW_VLAN_RX_FLAG) && | |
639 | (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & | |
640 | PARSING_FLAGS_VLAN)) | |
641 | vlan_gro_receive(&fp->napi, bp->vlgrp, | |
642 | le16_to_cpu(cqe->fast_path_cqe.vlan_tag), skb); | |
643 | else | |
644 | #endif | |
645 | napi_gro_receive(&fp->napi, skb); | |
646 | ||
647 | ||
648 | next_rx: | |
649 | rx_buf->skb = NULL; | |
650 | ||
651 | bd_cons = NEXT_RX_IDX(bd_cons); | |
652 | bd_prod = NEXT_RX_IDX(bd_prod); | |
653 | bd_prod_fw = NEXT_RX_IDX(bd_prod_fw); | |
654 | rx_pkt++; | |
655 | next_cqe: | |
656 | sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod); | |
657 | sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons); | |
658 | ||
659 | if (rx_pkt == budget) | |
660 | break; | |
661 | } /* while */ | |
662 | ||
663 | fp->rx_bd_cons = bd_cons; | |
664 | fp->rx_bd_prod = bd_prod_fw; | |
665 | fp->rx_comp_cons = sw_comp_cons; | |
666 | fp->rx_comp_prod = sw_comp_prod; | |
667 | ||
668 | /* Update producers */ | |
669 | bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod, | |
670 | fp->rx_sge_prod); | |
671 | ||
672 | fp->rx_pkt += rx_pkt; | |
673 | fp->rx_calls++; | |
674 | ||
675 | return rx_pkt; | |
676 | } | |
677 | ||
678 | static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie) | |
679 | { | |
680 | struct bnx2x_fastpath *fp = fp_cookie; | |
681 | struct bnx2x *bp = fp->bp; | |
682 | ||
683 | /* Return here if interrupt is disabled */ | |
684 | if (unlikely(atomic_read(&bp->intr_sem) != 0)) { | |
685 | DP(NETIF_MSG_INTR, "called but intr_sem not 0, returning\n"); | |
686 | return IRQ_HANDLED; | |
687 | } | |
688 | ||
523224a3 DK |
689 | DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB " |
690 | "[fp %d fw_sd %d igusb %d]\n", | |
691 | fp->index, fp->fw_sb_id, fp->igu_sb_id); | |
692 | bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0); | |
9f6c9258 DK |
693 | |
694 | #ifdef BNX2X_STOP_ON_ERROR | |
695 | if (unlikely(bp->panic)) | |
696 | return IRQ_HANDLED; | |
697 | #endif | |
698 | ||
699 | /* Handle Rx and Tx according to MSI-X vector */ | |
700 | prefetch(fp->rx_cons_sb); | |
701 | prefetch(fp->tx_cons_sb); | |
523224a3 | 702 | prefetch(&fp->sb_running_index[SM_RX_ID]); |
9f6c9258 DK |
703 | napi_schedule(&bnx2x_fp(bp, fp->index, napi)); |
704 | ||
705 | return IRQ_HANDLED; | |
706 | } | |
707 | ||
708 | ||
709 | /* HW Lock for shared dual port PHYs */ | |
710 | void bnx2x_acquire_phy_lock(struct bnx2x *bp) | |
711 | { | |
712 | mutex_lock(&bp->port.phy_mutex); | |
713 | ||
714 | if (bp->port.need_hw_lock) | |
715 | bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); | |
716 | } | |
717 | ||
718 | void bnx2x_release_phy_lock(struct bnx2x *bp) | |
719 | { | |
720 | if (bp->port.need_hw_lock) | |
721 | bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); | |
722 | ||
723 | mutex_unlock(&bp->port.phy_mutex); | |
724 | } | |
725 | ||
726 | void bnx2x_link_report(struct bnx2x *bp) | |
727 | { | |
728 | if (bp->flags & MF_FUNC_DIS) { | |
729 | netif_carrier_off(bp->dev); | |
730 | netdev_err(bp->dev, "NIC Link is Down\n"); | |
731 | return; | |
732 | } | |
733 | ||
734 | if (bp->link_vars.link_up) { | |
735 | u16 line_speed; | |
736 | ||
737 | if (bp->state == BNX2X_STATE_OPEN) | |
738 | netif_carrier_on(bp->dev); | |
739 | netdev_info(bp->dev, "NIC Link is Up, "); | |
740 | ||
741 | line_speed = bp->link_vars.line_speed; | |
fb3bff17 | 742 | if (IS_MF(bp)) { |
9f6c9258 DK |
743 | u16 vn_max_rate; |
744 | ||
745 | vn_max_rate = | |
f2e0899f DK |
746 | ((bp->mf_config[BP_VN(bp)] & |
747 | FUNC_MF_CFG_MAX_BW_MASK) >> | |
748 | FUNC_MF_CFG_MAX_BW_SHIFT) * 100; | |
9f6c9258 DK |
749 | if (vn_max_rate < line_speed) |
750 | line_speed = vn_max_rate; | |
751 | } | |
752 | pr_cont("%d Mbps ", line_speed); | |
753 | ||
754 | if (bp->link_vars.duplex == DUPLEX_FULL) | |
755 | pr_cont("full duplex"); | |
756 | else | |
757 | pr_cont("half duplex"); | |
758 | ||
759 | if (bp->link_vars.flow_ctrl != BNX2X_FLOW_CTRL_NONE) { | |
760 | if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX) { | |
761 | pr_cont(", receive "); | |
762 | if (bp->link_vars.flow_ctrl & | |
763 | BNX2X_FLOW_CTRL_TX) | |
764 | pr_cont("& transmit "); | |
765 | } else { | |
766 | pr_cont(", transmit "); | |
767 | } | |
768 | pr_cont("flow control ON"); | |
769 | } | |
770 | pr_cont("\n"); | |
771 | ||
772 | } else { /* link_down */ | |
773 | netif_carrier_off(bp->dev); | |
774 | netdev_err(bp->dev, "NIC Link is Down\n"); | |
775 | } | |
776 | } | |
777 | ||
523224a3 DK |
778 | /* Returns the number of actually allocated BDs */ |
779 | static inline int bnx2x_alloc_rx_bds(struct bnx2x_fastpath *fp, | |
780 | int rx_ring_size) | |
781 | { | |
782 | struct bnx2x *bp = fp->bp; | |
783 | u16 ring_prod, cqe_ring_prod; | |
784 | int i; | |
785 | ||
786 | fp->rx_comp_cons = 0; | |
787 | cqe_ring_prod = ring_prod = 0; | |
788 | for (i = 0; i < rx_ring_size; i++) { | |
789 | if (bnx2x_alloc_rx_skb(bp, fp, ring_prod) < 0) { | |
790 | BNX2X_ERR("was only able to allocate " | |
791 | "%d rx skbs on queue[%d]\n", i, fp->index); | |
792 | fp->eth_q_stats.rx_skb_alloc_failed++; | |
793 | break; | |
794 | } | |
795 | ring_prod = NEXT_RX_IDX(ring_prod); | |
796 | cqe_ring_prod = NEXT_RCQ_IDX(cqe_ring_prod); | |
797 | WARN_ON(ring_prod <= i); | |
798 | } | |
799 | ||
800 | fp->rx_bd_prod = ring_prod; | |
801 | /* Limit the CQE producer by the CQE ring size */ | |
802 | fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT, | |
803 | cqe_ring_prod); | |
804 | fp->rx_pkt = fp->rx_calls = 0; | |
805 | ||
806 | return i; | |
807 | } | |
808 | ||
809 | static inline void bnx2x_alloc_rx_bd_ring(struct bnx2x_fastpath *fp) | |
810 | { | |
811 | struct bnx2x *bp = fp->bp; | |
812 | int rx_ring_size = bp->rx_ring_size ? bp->rx_ring_size : | |
813 | MAX_RX_AVAIL/bp->num_queues; | |
814 | ||
815 | rx_ring_size = max_t(int, MIN_RX_AVAIL, rx_ring_size); | |
816 | ||
817 | bnx2x_alloc_rx_bds(fp, rx_ring_size); | |
818 | ||
819 | /* Warning! | |
820 | * this will generate an interrupt (to the TSTORM) | |
821 | * must only be done after chip is initialized | |
822 | */ | |
823 | bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod, | |
824 | fp->rx_sge_prod); | |
825 | } | |
826 | ||
9f6c9258 DK |
827 | void bnx2x_init_rx_rings(struct bnx2x *bp) |
828 | { | |
829 | int func = BP_FUNC(bp); | |
830 | int max_agg_queues = CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 : | |
831 | ETH_MAX_AGGREGATION_QUEUES_E1H; | |
523224a3 | 832 | u16 ring_prod; |
9f6c9258 | 833 | int i, j; |
25141580 | 834 | |
523224a3 DK |
835 | bp->rx_buf_size = bp->dev->mtu + ETH_OVREHEAD + BNX2X_RX_ALIGN + |
836 | BNX2X_FW_IP_HDR_ALIGN_PAD; | |
9f6c9258 | 837 | |
9f6c9258 DK |
838 | DP(NETIF_MSG_IFUP, |
839 | "mtu %d rx_buf_size %d\n", bp->dev->mtu, bp->rx_buf_size); | |
840 | ||
523224a3 DK |
841 | for_each_queue(bp, j) { |
842 | struct bnx2x_fastpath *fp = &bp->fp[j]; | |
9f6c9258 | 843 | |
523224a3 | 844 | if (!fp->disable_tpa) { |
9f6c9258 DK |
845 | for (i = 0; i < max_agg_queues; i++) { |
846 | fp->tpa_pool[i].skb = | |
847 | netdev_alloc_skb(bp->dev, bp->rx_buf_size); | |
848 | if (!fp->tpa_pool[i].skb) { | |
849 | BNX2X_ERR("Failed to allocate TPA " | |
850 | "skb pool for queue[%d] - " | |
851 | "disabling TPA on this " | |
852 | "queue!\n", j); | |
853 | bnx2x_free_tpa_pool(bp, fp, i); | |
854 | fp->disable_tpa = 1; | |
855 | break; | |
856 | } | |
857 | dma_unmap_addr_set((struct sw_rx_bd *) | |
858 | &bp->fp->tpa_pool[i], | |
859 | mapping, 0); | |
860 | fp->tpa_state[i] = BNX2X_TPA_STOP; | |
861 | } | |
523224a3 DK |
862 | |
863 | /* "next page" elements initialization */ | |
864 | bnx2x_set_next_page_sgl(fp); | |
865 | ||
866 | /* set SGEs bit mask */ | |
867 | bnx2x_init_sge_ring_bit_mask(fp); | |
868 | ||
869 | /* Allocate SGEs and initialize the ring elements */ | |
870 | for (i = 0, ring_prod = 0; | |
871 | i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) { | |
872 | ||
873 | if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) { | |
874 | BNX2X_ERR("was only able to allocate " | |
875 | "%d rx sges\n", i); | |
876 | BNX2X_ERR("disabling TPA for" | |
877 | " queue[%d]\n", j); | |
878 | /* Cleanup already allocated elements */ | |
879 | bnx2x_free_rx_sge_range(bp, | |
880 | fp, ring_prod); | |
881 | bnx2x_free_tpa_pool(bp, | |
882 | fp, max_agg_queues); | |
883 | fp->disable_tpa = 1; | |
884 | ring_prod = 0; | |
885 | break; | |
886 | } | |
887 | ring_prod = NEXT_SGE_IDX(ring_prod); | |
888 | } | |
889 | ||
890 | fp->rx_sge_prod = ring_prod; | |
9f6c9258 DK |
891 | } |
892 | } | |
893 | ||
894 | for_each_queue(bp, j) { | |
895 | struct bnx2x_fastpath *fp = &bp->fp[j]; | |
896 | ||
897 | fp->rx_bd_cons = 0; | |
9f6c9258 | 898 | |
523224a3 | 899 | bnx2x_set_next_page_rx_bd(fp); |
9f6c9258 DK |
900 | |
901 | /* CQ ring */ | |
523224a3 | 902 | bnx2x_set_next_page_rx_cq(fp); |
9f6c9258 DK |
903 | |
904 | /* Allocate BDs and initialize BD ring */ | |
523224a3 | 905 | bnx2x_alloc_rx_bd_ring(fp); |
9f6c9258 | 906 | |
9f6c9258 DK |
907 | if (j != 0) |
908 | continue; | |
909 | ||
f2e0899f DK |
910 | if (!CHIP_IS_E2(bp)) { |
911 | REG_WR(bp, BAR_USTRORM_INTMEM + | |
912 | USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func), | |
913 | U64_LO(fp->rx_comp_mapping)); | |
914 | REG_WR(bp, BAR_USTRORM_INTMEM + | |
915 | USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4, | |
916 | U64_HI(fp->rx_comp_mapping)); | |
917 | } | |
9f6c9258 DK |
918 | } |
919 | } | |
920 | static void bnx2x_free_tx_skbs(struct bnx2x *bp) | |
921 | { | |
922 | int i; | |
923 | ||
924 | for_each_queue(bp, i) { | |
925 | struct bnx2x_fastpath *fp = &bp->fp[i]; | |
926 | ||
927 | u16 bd_cons = fp->tx_bd_cons; | |
928 | u16 sw_prod = fp->tx_pkt_prod; | |
929 | u16 sw_cons = fp->tx_pkt_cons; | |
930 | ||
931 | while (sw_cons != sw_prod) { | |
932 | bd_cons = bnx2x_free_tx_pkt(bp, fp, TX_BD(sw_cons)); | |
933 | sw_cons++; | |
934 | } | |
935 | } | |
936 | } | |
937 | ||
938 | static void bnx2x_free_rx_skbs(struct bnx2x *bp) | |
939 | { | |
940 | int i, j; | |
941 | ||
942 | for_each_queue(bp, j) { | |
943 | struct bnx2x_fastpath *fp = &bp->fp[j]; | |
944 | ||
945 | for (i = 0; i < NUM_RX_BD; i++) { | |
946 | struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i]; | |
947 | struct sk_buff *skb = rx_buf->skb; | |
948 | ||
949 | if (skb == NULL) | |
950 | continue; | |
951 | ||
952 | dma_unmap_single(&bp->pdev->dev, | |
953 | dma_unmap_addr(rx_buf, mapping), | |
954 | bp->rx_buf_size, DMA_FROM_DEVICE); | |
955 | ||
956 | rx_buf->skb = NULL; | |
957 | dev_kfree_skb(skb); | |
958 | } | |
959 | if (!fp->disable_tpa) | |
960 | bnx2x_free_tpa_pool(bp, fp, CHIP_IS_E1(bp) ? | |
961 | ETH_MAX_AGGREGATION_QUEUES_E1 : | |
962 | ETH_MAX_AGGREGATION_QUEUES_E1H); | |
963 | } | |
964 | } | |
965 | ||
966 | void bnx2x_free_skbs(struct bnx2x *bp) | |
967 | { | |
968 | bnx2x_free_tx_skbs(bp); | |
969 | bnx2x_free_rx_skbs(bp); | |
970 | } | |
971 | ||
972 | static void bnx2x_free_msix_irqs(struct bnx2x *bp) | |
973 | { | |
974 | int i, offset = 1; | |
975 | ||
976 | free_irq(bp->msix_table[0].vector, bp->dev); | |
977 | DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n", | |
978 | bp->msix_table[0].vector); | |
979 | ||
980 | #ifdef BCM_CNIC | |
981 | offset++; | |
982 | #endif | |
983 | for_each_queue(bp, i) { | |
984 | DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq " | |
985 | "state %x\n", i, bp->msix_table[i + offset].vector, | |
986 | bnx2x_fp(bp, i, state)); | |
987 | ||
988 | free_irq(bp->msix_table[i + offset].vector, &bp->fp[i]); | |
989 | } | |
990 | } | |
991 | ||
992 | void bnx2x_free_irq(struct bnx2x *bp, bool disable_only) | |
993 | { | |
994 | if (bp->flags & USING_MSIX_FLAG) { | |
995 | if (!disable_only) | |
996 | bnx2x_free_msix_irqs(bp); | |
997 | pci_disable_msix(bp->pdev); | |
998 | bp->flags &= ~USING_MSIX_FLAG; | |
999 | ||
1000 | } else if (bp->flags & USING_MSI_FLAG) { | |
1001 | if (!disable_only) | |
1002 | free_irq(bp->pdev->irq, bp->dev); | |
1003 | pci_disable_msi(bp->pdev); | |
1004 | bp->flags &= ~USING_MSI_FLAG; | |
1005 | ||
1006 | } else if (!disable_only) | |
1007 | free_irq(bp->pdev->irq, bp->dev); | |
1008 | } | |
1009 | ||
1010 | static int bnx2x_enable_msix(struct bnx2x *bp) | |
1011 | { | |
1012 | int i, rc, offset = 1; | |
1013 | int igu_vec = 0; | |
1014 | ||
1015 | bp->msix_table[0].entry = igu_vec; | |
1016 | DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n", igu_vec); | |
1017 | ||
1018 | #ifdef BCM_CNIC | |
1019 | igu_vec = BP_L_ID(bp) + offset; | |
1020 | bp->msix_table[1].entry = igu_vec; | |
1021 | DP(NETIF_MSG_IFUP, "msix_table[1].entry = %d (CNIC)\n", igu_vec); | |
1022 | offset++; | |
1023 | #endif | |
1024 | for_each_queue(bp, i) { | |
1025 | igu_vec = BP_L_ID(bp) + offset + i; | |
1026 | bp->msix_table[i + offset].entry = igu_vec; | |
1027 | DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d " | |
1028 | "(fastpath #%u)\n", i + offset, igu_vec, i); | |
1029 | } | |
1030 | ||
1031 | rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], | |
1032 | BNX2X_NUM_QUEUES(bp) + offset); | |
1033 | ||
1034 | /* | |
1035 | * reconfigure number of tx/rx queues according to available | |
1036 | * MSI-X vectors | |
1037 | */ | |
1038 | if (rc >= BNX2X_MIN_MSIX_VEC_CNT) { | |
1039 | /* vectors available for FP */ | |
1040 | int fp_vec = rc - BNX2X_MSIX_VEC_FP_START; | |
1041 | ||
1042 | DP(NETIF_MSG_IFUP, | |
1043 | "Trying to use less MSI-X vectors: %d\n", rc); | |
1044 | ||
1045 | rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc); | |
1046 | ||
1047 | if (rc) { | |
1048 | DP(NETIF_MSG_IFUP, | |
1049 | "MSI-X is not attainable rc %d\n", rc); | |
1050 | return rc; | |
1051 | } | |
1052 | ||
1053 | bp->num_queues = min(bp->num_queues, fp_vec); | |
1054 | ||
1055 | DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n", | |
1056 | bp->num_queues); | |
1057 | } else if (rc) { | |
1058 | DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc); | |
1059 | return rc; | |
1060 | } | |
1061 | ||
1062 | bp->flags |= USING_MSIX_FLAG; | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | static int bnx2x_req_msix_irqs(struct bnx2x *bp) | |
1068 | { | |
1069 | int i, rc, offset = 1; | |
1070 | ||
1071 | rc = request_irq(bp->msix_table[0].vector, bnx2x_msix_sp_int, 0, | |
1072 | bp->dev->name, bp->dev); | |
1073 | if (rc) { | |
1074 | BNX2X_ERR("request sp irq failed\n"); | |
1075 | return -EBUSY; | |
1076 | } | |
1077 | ||
1078 | #ifdef BCM_CNIC | |
1079 | offset++; | |
1080 | #endif | |
1081 | for_each_queue(bp, i) { | |
1082 | struct bnx2x_fastpath *fp = &bp->fp[i]; | |
1083 | snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", | |
1084 | bp->dev->name, i); | |
1085 | ||
1086 | rc = request_irq(bp->msix_table[i + offset].vector, | |
1087 | bnx2x_msix_fp_int, 0, fp->name, fp); | |
1088 | if (rc) { | |
1089 | BNX2X_ERR("request fp #%d irq failed rc %d\n", i, rc); | |
1090 | bnx2x_free_msix_irqs(bp); | |
1091 | return -EBUSY; | |
1092 | } | |
1093 | ||
1094 | fp->state = BNX2X_FP_STATE_IRQ; | |
1095 | } | |
1096 | ||
1097 | i = BNX2X_NUM_QUEUES(bp); | |
1098 | netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d" | |
1099 | " ... fp[%d] %d\n", | |
1100 | bp->msix_table[0].vector, | |
1101 | 0, bp->msix_table[offset].vector, | |
1102 | i - 1, bp->msix_table[offset + i - 1].vector); | |
1103 | ||
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | static int bnx2x_enable_msi(struct bnx2x *bp) | |
1108 | { | |
1109 | int rc; | |
1110 | ||
1111 | rc = pci_enable_msi(bp->pdev); | |
1112 | if (rc) { | |
1113 | DP(NETIF_MSG_IFUP, "MSI is not attainable\n"); | |
1114 | return -1; | |
1115 | } | |
1116 | bp->flags |= USING_MSI_FLAG; | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | static int bnx2x_req_irq(struct bnx2x *bp) | |
1122 | { | |
1123 | unsigned long flags; | |
1124 | int rc; | |
1125 | ||
1126 | if (bp->flags & USING_MSI_FLAG) | |
1127 | flags = 0; | |
1128 | else | |
1129 | flags = IRQF_SHARED; | |
1130 | ||
1131 | rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags, | |
1132 | bp->dev->name, bp->dev); | |
1133 | if (!rc) | |
1134 | bnx2x_fp(bp, 0, state) = BNX2X_FP_STATE_IRQ; | |
1135 | ||
1136 | return rc; | |
1137 | } | |
1138 | ||
1139 | static void bnx2x_napi_enable(struct bnx2x *bp) | |
1140 | { | |
1141 | int i; | |
1142 | ||
1143 | for_each_queue(bp, i) | |
1144 | napi_enable(&bnx2x_fp(bp, i, napi)); | |
1145 | } | |
1146 | ||
1147 | static void bnx2x_napi_disable(struct bnx2x *bp) | |
1148 | { | |
1149 | int i; | |
1150 | ||
1151 | for_each_queue(bp, i) | |
1152 | napi_disable(&bnx2x_fp(bp, i, napi)); | |
1153 | } | |
1154 | ||
1155 | void bnx2x_netif_start(struct bnx2x *bp) | |
1156 | { | |
1157 | int intr_sem; | |
1158 | ||
1159 | intr_sem = atomic_dec_and_test(&bp->intr_sem); | |
1160 | smp_wmb(); /* Ensure that bp->intr_sem update is SMP-safe */ | |
1161 | ||
1162 | if (intr_sem) { | |
1163 | if (netif_running(bp->dev)) { | |
1164 | bnx2x_napi_enable(bp); | |
1165 | bnx2x_int_enable(bp); | |
1166 | if (bp->state == BNX2X_STATE_OPEN) | |
1167 | netif_tx_wake_all_queues(bp->dev); | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw) | |
1173 | { | |
1174 | bnx2x_int_disable_sync(bp, disable_hw); | |
1175 | bnx2x_napi_disable(bp); | |
1176 | netif_tx_disable(bp->dev); | |
1177 | } | |
1178 | static int bnx2x_set_num_queues(struct bnx2x *bp) | |
1179 | { | |
1180 | int rc = 0; | |
1181 | ||
1182 | switch (bp->int_mode) { | |
9f6c9258 | 1183 | case INT_MODE_MSI: |
8681dc3a DK |
1184 | bnx2x_enable_msi(bp); |
1185 | /* falling through... */ | |
1186 | case INT_MODE_INTx: | |
9f6c9258 DK |
1187 | bp->num_queues = 1; |
1188 | DP(NETIF_MSG_IFUP, "set number of queues to 1\n"); | |
1189 | break; | |
1190 | default: | |
1191 | /* Set number of queues according to bp->multi_mode value */ | |
1192 | bnx2x_set_num_queues_msix(bp); | |
1193 | ||
1194 | DP(NETIF_MSG_IFUP, "set number of queues to %d\n", | |
1195 | bp->num_queues); | |
1196 | ||
1197 | /* if we can't use MSI-X we only need one fp, | |
1198 | * so try to enable MSI-X with the requested number of fp's | |
1199 | * and fallback to MSI or legacy INTx with one fp | |
1200 | */ | |
1201 | rc = bnx2x_enable_msix(bp); | |
8681dc3a | 1202 | if (rc) { |
9f6c9258 DK |
1203 | /* failed to enable MSI-X */ |
1204 | bp->num_queues = 1; | |
8681dc3a DK |
1205 | |
1206 | /* Fall to INTx if failed to enable MSI-X due to lack of | |
1207 | * memory (in bnx2x_set_num_queues()) */ | |
1208 | if ((rc != -ENOMEM) && (bp->int_mode != INT_MODE_INTx)) | |
1209 | bnx2x_enable_msi(bp); | |
1210 | } | |
1211 | ||
9f6c9258 DK |
1212 | break; |
1213 | } | |
31b600b5 BH |
1214 | netif_set_real_num_tx_queues(bp->dev, bp->num_queues); |
1215 | return netif_set_real_num_rx_queues(bp->dev, bp->num_queues); | |
9f6c9258 DK |
1216 | } |
1217 | ||
6891dd25 DK |
1218 | static void bnx2x_release_firmware(struct bnx2x *bp) |
1219 | { | |
1220 | kfree(bp->init_ops_offsets); | |
1221 | kfree(bp->init_ops); | |
1222 | kfree(bp->init_data); | |
1223 | release_firmware(bp->firmware); | |
1224 | } | |
1225 | ||
9f6c9258 DK |
1226 | /* must be called with rtnl_lock */ |
1227 | int bnx2x_nic_load(struct bnx2x *bp, int load_mode) | |
1228 | { | |
1229 | u32 load_code; | |
1230 | int i, rc; | |
1231 | ||
6891dd25 DK |
1232 | /* Set init arrays */ |
1233 | rc = bnx2x_init_firmware(bp); | |
1234 | if (rc) { | |
1235 | BNX2X_ERR("Error loading firmware\n"); | |
1236 | return rc; | |
1237 | } | |
1238 | ||
9f6c9258 DK |
1239 | #ifdef BNX2X_STOP_ON_ERROR |
1240 | if (unlikely(bp->panic)) | |
1241 | return -EPERM; | |
1242 | #endif | |
1243 | ||
1244 | bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD; | |
1245 | ||
1246 | rc = bnx2x_set_num_queues(bp); | |
31b600b5 BH |
1247 | if (rc) |
1248 | return rc; | |
9f6c9258 | 1249 | |
523224a3 DK |
1250 | /* must be called before memory allocation and HW init */ |
1251 | bnx2x_ilt_set_info(bp); | |
1252 | ||
9f6c9258 DK |
1253 | if (bnx2x_alloc_mem(bp)) { |
1254 | bnx2x_free_irq(bp, true); | |
1255 | return -ENOMEM; | |
1256 | } | |
1257 | ||
1258 | for_each_queue(bp, i) | |
1259 | bnx2x_fp(bp, i, disable_tpa) = | |
1260 | ((bp->flags & TPA_ENABLE_FLAG) == 0); | |
1261 | ||
1262 | for_each_queue(bp, i) | |
1263 | netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi), | |
1264 | bnx2x_poll, 128); | |
1265 | ||
1266 | bnx2x_napi_enable(bp); | |
1267 | ||
1268 | if (bp->flags & USING_MSIX_FLAG) { | |
1269 | rc = bnx2x_req_msix_irqs(bp); | |
1270 | if (rc) { | |
1271 | bnx2x_free_irq(bp, true); | |
1272 | goto load_error1; | |
1273 | } | |
1274 | } else { | |
9f6c9258 DK |
1275 | bnx2x_ack_int(bp); |
1276 | rc = bnx2x_req_irq(bp); | |
1277 | if (rc) { | |
1278 | BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc); | |
1279 | bnx2x_free_irq(bp, true); | |
1280 | goto load_error1; | |
1281 | } | |
1282 | if (bp->flags & USING_MSI_FLAG) { | |
1283 | bp->dev->irq = bp->pdev->irq; | |
1284 | netdev_info(bp->dev, "using MSI IRQ %d\n", | |
1285 | bp->pdev->irq); | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | /* Send LOAD_REQUEST command to MCP | |
1290 | Returns the type of LOAD command: | |
1291 | if it is the first port to be initialized | |
1292 | common blocks should be initialized, otherwise - not | |
1293 | */ | |
1294 | if (!BP_NOMCP(bp)) { | |
a22f0788 | 1295 | load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0); |
9f6c9258 DK |
1296 | if (!load_code) { |
1297 | BNX2X_ERR("MCP response failure, aborting\n"); | |
1298 | rc = -EBUSY; | |
1299 | goto load_error2; | |
1300 | } | |
1301 | if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) { | |
1302 | rc = -EBUSY; /* other port in diagnostic mode */ | |
1303 | goto load_error2; | |
1304 | } | |
1305 | ||
1306 | } else { | |
f2e0899f | 1307 | int path = BP_PATH(bp); |
9f6c9258 DK |
1308 | int port = BP_PORT(bp); |
1309 | ||
f2e0899f DK |
1310 | DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n", |
1311 | path, load_count[path][0], load_count[path][1], | |
1312 | load_count[path][2]); | |
1313 | load_count[path][0]++; | |
1314 | load_count[path][1 + port]++; | |
1315 | DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n", | |
1316 | path, load_count[path][0], load_count[path][1], | |
1317 | load_count[path][2]); | |
1318 | if (load_count[path][0] == 1) | |
9f6c9258 | 1319 | load_code = FW_MSG_CODE_DRV_LOAD_COMMON; |
f2e0899f | 1320 | else if (load_count[path][1 + port] == 1) |
9f6c9258 DK |
1321 | load_code = FW_MSG_CODE_DRV_LOAD_PORT; |
1322 | else | |
1323 | load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; | |
1324 | } | |
1325 | ||
1326 | if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || | |
f2e0899f | 1327 | (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) || |
9f6c9258 DK |
1328 | (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) |
1329 | bp->port.pmf = 1; | |
1330 | else | |
1331 | bp->port.pmf = 0; | |
1332 | DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); | |
1333 | ||
1334 | /* Initialize HW */ | |
1335 | rc = bnx2x_init_hw(bp, load_code); | |
1336 | if (rc) { | |
1337 | BNX2X_ERR("HW init failed, aborting\n"); | |
a22f0788 YR |
1338 | bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); |
1339 | bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0); | |
1340 | bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0); | |
9f6c9258 DK |
1341 | goto load_error2; |
1342 | } | |
1343 | ||
523224a3 DK |
1344 | if (rc) { |
1345 | bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); | |
1346 | goto load_error2; | |
1347 | } | |
1348 | ||
9f6c9258 DK |
1349 | /* Setup NIC internals and enable interrupts */ |
1350 | bnx2x_nic_init(bp, load_code); | |
1351 | ||
f2e0899f DK |
1352 | if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || |
1353 | (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) && | |
9f6c9258 DK |
1354 | (bp->common.shmem2_base)) |
1355 | SHMEM2_WR(bp, dcc_support, | |
1356 | (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV | | |
1357 | SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV)); | |
1358 | ||
1359 | /* Send LOAD_DONE command to MCP */ | |
1360 | if (!BP_NOMCP(bp)) { | |
a22f0788 | 1361 | load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); |
9f6c9258 DK |
1362 | if (!load_code) { |
1363 | BNX2X_ERR("MCP response failure, aborting\n"); | |
1364 | rc = -EBUSY; | |
1365 | goto load_error3; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | bp->state = BNX2X_STATE_OPENING_WAIT4_PORT; | |
1370 | ||
523224a3 DK |
1371 | rc = bnx2x_func_start(bp); |
1372 | if (rc) { | |
1373 | BNX2X_ERR("Function start failed!\n"); | |
1374 | #ifndef BNX2X_STOP_ON_ERROR | |
1375 | goto load_error3; | |
1376 | #else | |
1377 | bp->panic = 1; | |
1378 | return -EBUSY; | |
1379 | #endif | |
1380 | } | |
1381 | ||
1382 | rc = bnx2x_setup_client(bp, &bp->fp[0], 1 /* Leading */); | |
9f6c9258 DK |
1383 | if (rc) { |
1384 | BNX2X_ERR("Setup leading failed!\n"); | |
1385 | #ifndef BNX2X_STOP_ON_ERROR | |
1386 | goto load_error3; | |
1387 | #else | |
1388 | bp->panic = 1; | |
1389 | return -EBUSY; | |
1390 | #endif | |
1391 | } | |
1392 | ||
f2e0899f DK |
1393 | if (!CHIP_IS_E1(bp) && |
1394 | (bp->mf_config[BP_VN(bp)] & FUNC_MF_CFG_FUNC_DISABLED)) { | |
1395 | DP(NETIF_MSG_IFUP, "mf_cfg function disabled\n"); | |
1396 | bp->flags |= MF_FUNC_DIS; | |
1397 | } | |
9f6c9258 | 1398 | |
9f6c9258 | 1399 | #ifdef BCM_CNIC |
523224a3 DK |
1400 | /* Enable Timer scan */ |
1401 | REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 1); | |
9f6c9258 | 1402 | #endif |
523224a3 DK |
1403 | for_each_nondefault_queue(bp, i) { |
1404 | rc = bnx2x_setup_client(bp, &bp->fp[i], 0); | |
1405 | if (rc) | |
9f6c9258 | 1406 | #ifdef BCM_CNIC |
523224a3 | 1407 | goto load_error4; |
9f6c9258 | 1408 | #else |
523224a3 | 1409 | goto load_error3; |
9f6c9258 | 1410 | #endif |
523224a3 DK |
1411 | } |
1412 | ||
1413 | /* Now when Clients are configured we are ready to work */ | |
1414 | bp->state = BNX2X_STATE_OPEN; | |
1415 | ||
1416 | bnx2x_set_eth_mac(bp, 1); | |
9f6c9258 | 1417 | |
9f6c9258 | 1418 | #ifdef BCM_CNIC |
523224a3 DK |
1419 | /* Set iSCSI L2 MAC */ |
1420 | mutex_lock(&bp->cnic_mutex); | |
1421 | if (bp->cnic_eth_dev.drv_state & CNIC_DRV_STATE_REGD) { | |
1422 | bnx2x_set_iscsi_eth_mac_addr(bp, 1); | |
1423 | bp->cnic_flags |= BNX2X_CNIC_FLAG_MAC_SET; | |
1424 | bnx2x_init_sb(bp, bp->cnic_sb_mapping, | |
1425 | BNX2X_VF_ID_INVALID, false, | |
1426 | CNIC_SB_ID(bp), CNIC_IGU_SB_ID(bp)); | |
9f6c9258 | 1427 | } |
523224a3 DK |
1428 | mutex_unlock(&bp->cnic_mutex); |
1429 | #endif | |
9f6c9258 DK |
1430 | |
1431 | if (bp->port.pmf) | |
1432 | bnx2x_initial_phy_init(bp, load_mode); | |
1433 | ||
1434 | /* Start fast path */ | |
1435 | switch (load_mode) { | |
1436 | case LOAD_NORMAL: | |
523224a3 DK |
1437 | /* Tx queue should be only reenabled */ |
1438 | netif_tx_wake_all_queues(bp->dev); | |
9f6c9258 DK |
1439 | /* Initialize the receive filter. */ |
1440 | bnx2x_set_rx_mode(bp->dev); | |
1441 | break; | |
1442 | ||
1443 | case LOAD_OPEN: | |
1444 | netif_tx_start_all_queues(bp->dev); | |
523224a3 | 1445 | smp_mb__after_clear_bit(); |
9f6c9258 DK |
1446 | /* Initialize the receive filter. */ |
1447 | bnx2x_set_rx_mode(bp->dev); | |
1448 | break; | |
1449 | ||
1450 | case LOAD_DIAG: | |
1451 | /* Initialize the receive filter. */ | |
1452 | bnx2x_set_rx_mode(bp->dev); | |
1453 | bp->state = BNX2X_STATE_DIAG; | |
1454 | break; | |
1455 | ||
1456 | default: | |
1457 | break; | |
1458 | } | |
1459 | ||
1460 | if (!bp->port.pmf) | |
1461 | bnx2x__link_status_update(bp); | |
1462 | ||
1463 | /* start the timer */ | |
1464 | mod_timer(&bp->timer, jiffies + bp->current_interval); | |
1465 | ||
1466 | #ifdef BCM_CNIC | |
1467 | bnx2x_setup_cnic_irq_info(bp); | |
1468 | if (bp->state == BNX2X_STATE_OPEN) | |
1469 | bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD); | |
1470 | #endif | |
1471 | bnx2x_inc_load_cnt(bp); | |
1472 | ||
6891dd25 DK |
1473 | bnx2x_release_firmware(bp); |
1474 | ||
9f6c9258 DK |
1475 | return 0; |
1476 | ||
1477 | #ifdef BCM_CNIC | |
1478 | load_error4: | |
1479 | /* Disable Timer scan */ | |
1480 | REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 0); | |
1481 | #endif | |
1482 | load_error3: | |
1483 | bnx2x_int_disable_sync(bp, 1); | |
1484 | if (!BP_NOMCP(bp)) { | |
a22f0788 YR |
1485 | bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0); |
1486 | bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0); | |
9f6c9258 DK |
1487 | } |
1488 | bp->port.pmf = 0; | |
1489 | /* Free SKBs, SGEs, TPA pool and driver internals */ | |
1490 | bnx2x_free_skbs(bp); | |
1491 | for_each_queue(bp, i) | |
1492 | bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); | |
1493 | load_error2: | |
1494 | /* Release IRQs */ | |
1495 | bnx2x_free_irq(bp, false); | |
1496 | load_error1: | |
1497 | bnx2x_napi_disable(bp); | |
1498 | for_each_queue(bp, i) | |
1499 | netif_napi_del(&bnx2x_fp(bp, i, napi)); | |
1500 | bnx2x_free_mem(bp); | |
1501 | ||
6891dd25 DK |
1502 | bnx2x_release_firmware(bp); |
1503 | ||
9f6c9258 DK |
1504 | return rc; |
1505 | } | |
1506 | ||
1507 | /* must be called with rtnl_lock */ | |
1508 | int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) | |
1509 | { | |
1510 | int i; | |
1511 | ||
1512 | if (bp->state == BNX2X_STATE_CLOSED) { | |
1513 | /* Interface has been removed - nothing to recover */ | |
1514 | bp->recovery_state = BNX2X_RECOVERY_DONE; | |
1515 | bp->is_leader = 0; | |
1516 | bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08); | |
1517 | smp_wmb(); | |
1518 | ||
1519 | return -EINVAL; | |
1520 | } | |
1521 | ||
1522 | #ifdef BCM_CNIC | |
1523 | bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD); | |
1524 | #endif | |
1525 | bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT; | |
1526 | ||
1527 | /* Set "drop all" */ | |
1528 | bp->rx_mode = BNX2X_RX_MODE_NONE; | |
1529 | bnx2x_set_storm_rx_mode(bp); | |
1530 | ||
f2e0899f DK |
1531 | /* Stop Tx */ |
1532 | bnx2x_tx_disable(bp); | |
9f6c9258 | 1533 | del_timer_sync(&bp->timer); |
f2e0899f | 1534 | SHMEM_WR(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb, |
9f6c9258 DK |
1535 | (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq)); |
1536 | bnx2x_stats_handle(bp, STATS_EVENT_STOP); | |
1537 | ||
9f6c9258 DK |
1538 | |
1539 | /* Cleanup the chip if needed */ | |
1540 | if (unload_mode != UNLOAD_RECOVERY) | |
1541 | bnx2x_chip_cleanup(bp, unload_mode); | |
523224a3 DK |
1542 | else { |
1543 | /* Disable HW interrupts, NAPI and Tx */ | |
1544 | bnx2x_netif_stop(bp, 1); | |
1545 | ||
1546 | /* Release IRQs */ | |
1547 | bnx2x_free_irq(bp, false); | |
1548 | } | |
9f6c9258 DK |
1549 | |
1550 | bp->port.pmf = 0; | |
1551 | ||
1552 | /* Free SKBs, SGEs, TPA pool and driver internals */ | |
1553 | bnx2x_free_skbs(bp); | |
1554 | for_each_queue(bp, i) | |
1555 | bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); | |
1556 | for_each_queue(bp, i) | |
1557 | netif_napi_del(&bnx2x_fp(bp, i, napi)); | |
1558 | bnx2x_free_mem(bp); | |
1559 | ||
1560 | bp->state = BNX2X_STATE_CLOSED; | |
1561 | ||
1562 | /* The last driver must disable a "close the gate" if there is no | |
1563 | * parity attention or "process kill" pending. | |
1564 | */ | |
1565 | if ((!bnx2x_dec_load_cnt(bp)) && (!bnx2x_chk_parity_attn(bp)) && | |
1566 | bnx2x_reset_is_done(bp)) | |
1567 | bnx2x_disable_close_the_gate(bp); | |
1568 | ||
1569 | /* Reset MCP mail box sequence if there is on going recovery */ | |
1570 | if (unload_mode == UNLOAD_RECOVERY) | |
1571 | bp->fw_seq = 0; | |
1572 | ||
1573 | return 0; | |
1574 | } | |
1575 | int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state) | |
1576 | { | |
1577 | u16 pmcsr; | |
1578 | ||
1579 | pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr); | |
1580 | ||
1581 | switch (state) { | |
1582 | case PCI_D0: | |
1583 | pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, | |
1584 | ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) | | |
1585 | PCI_PM_CTRL_PME_STATUS)); | |
1586 | ||
1587 | if (pmcsr & PCI_PM_CTRL_STATE_MASK) | |
1588 | /* delay required during transition out of D3hot */ | |
1589 | msleep(20); | |
1590 | break; | |
1591 | ||
1592 | case PCI_D3hot: | |
1593 | /* If there are other clients above don't | |
1594 | shut down the power */ | |
1595 | if (atomic_read(&bp->pdev->enable_cnt) != 1) | |
1596 | return 0; | |
1597 | /* Don't shut down the power for emulation and FPGA */ | |
1598 | if (CHIP_REV_IS_SLOW(bp)) | |
1599 | return 0; | |
1600 | ||
1601 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; | |
1602 | pmcsr |= 3; | |
1603 | ||
1604 | if (bp->wol) | |
1605 | pmcsr |= PCI_PM_CTRL_PME_ENABLE; | |
1606 | ||
1607 | pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, | |
1608 | pmcsr); | |
1609 | ||
1610 | /* No more memory access after this point until | |
1611 | * device is brought back to D0. | |
1612 | */ | |
1613 | break; | |
1614 | ||
1615 | default: | |
1616 | return -EINVAL; | |
1617 | } | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | ||
1622 | ||
1623 | /* | |
1624 | * net_device service functions | |
1625 | */ | |
1626 | ||
1627 | static int bnx2x_poll(struct napi_struct *napi, int budget) | |
1628 | { | |
1629 | int work_done = 0; | |
1630 | struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath, | |
1631 | napi); | |
1632 | struct bnx2x *bp = fp->bp; | |
1633 | ||
1634 | while (1) { | |
1635 | #ifdef BNX2X_STOP_ON_ERROR | |
1636 | if (unlikely(bp->panic)) { | |
1637 | napi_complete(napi); | |
1638 | return 0; | |
1639 | } | |
1640 | #endif | |
1641 | ||
1642 | if (bnx2x_has_tx_work(fp)) | |
1643 | bnx2x_tx_int(fp); | |
1644 | ||
1645 | if (bnx2x_has_rx_work(fp)) { | |
1646 | work_done += bnx2x_rx_int(fp, budget - work_done); | |
1647 | ||
1648 | /* must not complete if we consumed full budget */ | |
1649 | if (work_done >= budget) | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | /* Fall out from the NAPI loop if needed */ | |
1654 | if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { | |
1655 | bnx2x_update_fpsb_idx(fp); | |
523224a3 DK |
1656 | /* bnx2x_has_rx_work() reads the status block, |
1657 | * thus we need to ensure that status block indices | |
1658 | * have been actually read (bnx2x_update_fpsb_idx) | |
1659 | * prior to this check (bnx2x_has_rx_work) so that | |
1660 | * we won't write the "newer" value of the status block | |
1661 | * to IGU (if there was a DMA right after | |
1662 | * bnx2x_has_rx_work and if there is no rmb, the memory | |
1663 | * reading (bnx2x_update_fpsb_idx) may be postponed | |
1664 | * to right before bnx2x_ack_sb). In this case there | |
1665 | * will never be another interrupt until there is | |
1666 | * another update of the status block, while there | |
1667 | * is still unhandled work. | |
9f6c9258 DK |
1668 | */ |
1669 | rmb(); | |
1670 | ||
1671 | if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { | |
1672 | napi_complete(napi); | |
1673 | /* Re-enable interrupts */ | |
523224a3 DK |
1674 | DP(NETIF_MSG_HW, |
1675 | "Update index to %d\n", fp->fp_hc_idx); | |
1676 | bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, | |
1677 | le16_to_cpu(fp->fp_hc_idx), | |
9f6c9258 DK |
1678 | IGU_INT_ENABLE, 1); |
1679 | break; | |
1680 | } | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | return work_done; | |
1685 | } | |
1686 | ||
1687 | ||
1688 | /* we split the first BD into headers and data BDs | |
1689 | * to ease the pain of our fellow microcode engineers | |
1690 | * we use one mapping for both BDs | |
1691 | * So far this has only been observed to happen | |
1692 | * in Other Operating Systems(TM) | |
1693 | */ | |
1694 | static noinline u16 bnx2x_tx_split(struct bnx2x *bp, | |
1695 | struct bnx2x_fastpath *fp, | |
1696 | struct sw_tx_bd *tx_buf, | |
1697 | struct eth_tx_start_bd **tx_bd, u16 hlen, | |
1698 | u16 bd_prod, int nbd) | |
1699 | { | |
1700 | struct eth_tx_start_bd *h_tx_bd = *tx_bd; | |
1701 | struct eth_tx_bd *d_tx_bd; | |
1702 | dma_addr_t mapping; | |
1703 | int old_len = le16_to_cpu(h_tx_bd->nbytes); | |
1704 | ||
1705 | /* first fix first BD */ | |
1706 | h_tx_bd->nbd = cpu_to_le16(nbd); | |
1707 | h_tx_bd->nbytes = cpu_to_le16(hlen); | |
1708 | ||
1709 | DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d " | |
1710 | "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi, | |
1711 | h_tx_bd->addr_lo, h_tx_bd->nbd); | |
1712 | ||
1713 | /* now get a new data BD | |
1714 | * (after the pbd) and fill it */ | |
1715 | bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); | |
1716 | d_tx_bd = &fp->tx_desc_ring[bd_prod].reg_bd; | |
1717 | ||
1718 | mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi), | |
1719 | le32_to_cpu(h_tx_bd->addr_lo)) + hlen; | |
1720 | ||
1721 | d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); | |
1722 | d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); | |
1723 | d_tx_bd->nbytes = cpu_to_le16(old_len - hlen); | |
1724 | ||
1725 | /* this marks the BD as one that has no individual mapping */ | |
1726 | tx_buf->flags |= BNX2X_TSO_SPLIT_BD; | |
1727 | ||
1728 | DP(NETIF_MSG_TX_QUEUED, | |
1729 | "TSO split data size is %d (%x:%x)\n", | |
1730 | d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo); | |
1731 | ||
1732 | /* update tx_bd */ | |
1733 | *tx_bd = (struct eth_tx_start_bd *)d_tx_bd; | |
1734 | ||
1735 | return bd_prod; | |
1736 | } | |
1737 | ||
1738 | static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix) | |
1739 | { | |
1740 | if (fix > 0) | |
1741 | csum = (u16) ~csum_fold(csum_sub(csum, | |
1742 | csum_partial(t_header - fix, fix, 0))); | |
1743 | ||
1744 | else if (fix < 0) | |
1745 | csum = (u16) ~csum_fold(csum_add(csum, | |
1746 | csum_partial(t_header, -fix, 0))); | |
1747 | ||
1748 | return swab16(csum); | |
1749 | } | |
1750 | ||
1751 | static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) | |
1752 | { | |
1753 | u32 rc; | |
1754 | ||
1755 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
1756 | rc = XMIT_PLAIN; | |
1757 | ||
1758 | else { | |
1759 | if (skb->protocol == htons(ETH_P_IPV6)) { | |
1760 | rc = XMIT_CSUM_V6; | |
1761 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
1762 | rc |= XMIT_CSUM_TCP; | |
1763 | ||
1764 | } else { | |
1765 | rc = XMIT_CSUM_V4; | |
1766 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
1767 | rc |= XMIT_CSUM_TCP; | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) | |
1772 | rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP); | |
1773 | ||
1774 | else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) | |
1775 | rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6); | |
1776 | ||
1777 | return rc; | |
1778 | } | |
1779 | ||
1780 | #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) | |
1781 | /* check if packet requires linearization (packet is too fragmented) | |
1782 | no need to check fragmentation if page size > 8K (there will be no | |
1783 | violation to FW restrictions) */ | |
1784 | static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb, | |
1785 | u32 xmit_type) | |
1786 | { | |
1787 | int to_copy = 0; | |
1788 | int hlen = 0; | |
1789 | int first_bd_sz = 0; | |
1790 | ||
1791 | /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */ | |
1792 | if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) { | |
1793 | ||
1794 | if (xmit_type & XMIT_GSO) { | |
1795 | unsigned short lso_mss = skb_shinfo(skb)->gso_size; | |
1796 | /* Check if LSO packet needs to be copied: | |
1797 | 3 = 1 (for headers BD) + 2 (for PBD and last BD) */ | |
1798 | int wnd_size = MAX_FETCH_BD - 3; | |
1799 | /* Number of windows to check */ | |
1800 | int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size; | |
1801 | int wnd_idx = 0; | |
1802 | int frag_idx = 0; | |
1803 | u32 wnd_sum = 0; | |
1804 | ||
1805 | /* Headers length */ | |
1806 | hlen = (int)(skb_transport_header(skb) - skb->data) + | |
1807 | tcp_hdrlen(skb); | |
1808 | ||
1809 | /* Amount of data (w/o headers) on linear part of SKB*/ | |
1810 | first_bd_sz = skb_headlen(skb) - hlen; | |
1811 | ||
1812 | wnd_sum = first_bd_sz; | |
1813 | ||
1814 | /* Calculate the first sum - it's special */ | |
1815 | for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++) | |
1816 | wnd_sum += | |
1817 | skb_shinfo(skb)->frags[frag_idx].size; | |
1818 | ||
1819 | /* If there was data on linear skb data - check it */ | |
1820 | if (first_bd_sz > 0) { | |
1821 | if (unlikely(wnd_sum < lso_mss)) { | |
1822 | to_copy = 1; | |
1823 | goto exit_lbl; | |
1824 | } | |
1825 | ||
1826 | wnd_sum -= first_bd_sz; | |
1827 | } | |
1828 | ||
1829 | /* Others are easier: run through the frag list and | |
1830 | check all windows */ | |
1831 | for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) { | |
1832 | wnd_sum += | |
1833 | skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size; | |
1834 | ||
1835 | if (unlikely(wnd_sum < lso_mss)) { | |
1836 | to_copy = 1; | |
1837 | break; | |
1838 | } | |
1839 | wnd_sum -= | |
1840 | skb_shinfo(skb)->frags[wnd_idx].size; | |
1841 | } | |
1842 | } else { | |
1843 | /* in non-LSO too fragmented packet should always | |
1844 | be linearized */ | |
1845 | to_copy = 1; | |
1846 | } | |
1847 | } | |
1848 | ||
1849 | exit_lbl: | |
1850 | if (unlikely(to_copy)) | |
1851 | DP(NETIF_MSG_TX_QUEUED, | |
1852 | "Linearization IS REQUIRED for %s packet. " | |
1853 | "num_frags %d hlen %d first_bd_sz %d\n", | |
1854 | (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO", | |
1855 | skb_shinfo(skb)->nr_frags, hlen, first_bd_sz); | |
1856 | ||
1857 | return to_copy; | |
1858 | } | |
1859 | #endif | |
1860 | ||
f2e0899f DK |
1861 | static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, |
1862 | struct eth_tx_parse_bd_e2 *pbd, | |
1863 | u32 xmit_type) | |
1864 | { | |
1865 | pbd->parsing_data |= cpu_to_le16(skb_shinfo(skb)->gso_size) << | |
1866 | ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT; | |
1867 | if ((xmit_type & XMIT_GSO_V6) && | |
1868 | (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) | |
1869 | pbd->parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR; | |
1870 | } | |
1871 | ||
1872 | /** | |
1873 | * Update PBD in GSO case. | |
1874 | * | |
1875 | * @param skb | |
1876 | * @param tx_start_bd | |
1877 | * @param pbd | |
1878 | * @param xmit_type | |
1879 | */ | |
1880 | static inline void bnx2x_set_pbd_gso(struct sk_buff *skb, | |
1881 | struct eth_tx_parse_bd_e1x *pbd, | |
1882 | u32 xmit_type) | |
1883 | { | |
1884 | pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size); | |
1885 | pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq); | |
1886 | pbd->tcp_flags = pbd_tcp_flags(skb); | |
1887 | ||
1888 | if (xmit_type & XMIT_GSO_V4) { | |
1889 | pbd->ip_id = swab16(ip_hdr(skb)->id); | |
1890 | pbd->tcp_pseudo_csum = | |
1891 | swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr, | |
1892 | ip_hdr(skb)->daddr, | |
1893 | 0, IPPROTO_TCP, 0)); | |
1894 | ||
1895 | } else | |
1896 | pbd->tcp_pseudo_csum = | |
1897 | swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1898 | &ipv6_hdr(skb)->daddr, | |
1899 | 0, IPPROTO_TCP, 0)); | |
1900 | ||
1901 | pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN; | |
1902 | } | |
1903 | /** | |
1904 | * | |
1905 | * @param skb | |
1906 | * @param tx_start_bd | |
1907 | * @param pbd_e2 | |
1908 | * @param xmit_type | |
1909 | * | |
1910 | * @return header len | |
1911 | */ | |
1912 | static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb, | |
1913 | struct eth_tx_parse_bd_e2 *pbd, | |
1914 | u32 xmit_type) | |
1915 | { | |
1916 | pbd->parsing_data |= cpu_to_le16(tcp_hdrlen(skb)/4) << | |
1917 | ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT; | |
1918 | ||
1919 | pbd->parsing_data |= cpu_to_le16(((unsigned char *)tcp_hdr(skb) - | |
1920 | skb->data) / 2) << | |
1921 | ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT; | |
1922 | ||
1923 | return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data; | |
1924 | } | |
1925 | ||
1926 | /** | |
1927 | * | |
1928 | * @param skb | |
1929 | * @param tx_start_bd | |
1930 | * @param pbd | |
1931 | * @param xmit_type | |
1932 | * | |
1933 | * @return Header length | |
1934 | */ | |
1935 | static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb, | |
1936 | struct eth_tx_parse_bd_e1x *pbd, | |
1937 | u32 xmit_type) | |
1938 | { | |
1939 | u8 hlen = (skb_network_header(skb) - skb->data) / 2; | |
1940 | ||
1941 | /* for now NS flag is not used in Linux */ | |
1942 | pbd->global_data = | |
1943 | (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) << | |
1944 | ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT)); | |
1945 | ||
1946 | pbd->ip_hlen_w = (skb_transport_header(skb) - | |
1947 | skb_network_header(skb)) / 2; | |
1948 | ||
1949 | hlen += pbd->ip_hlen_w + tcp_hdrlen(skb) / 2; | |
1950 | ||
1951 | pbd->total_hlen_w = cpu_to_le16(hlen); | |
1952 | hlen = hlen*2; | |
1953 | ||
1954 | if (xmit_type & XMIT_CSUM_TCP) { | |
1955 | pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check); | |
1956 | ||
1957 | } else { | |
1958 | s8 fix = SKB_CS_OFF(skb); /* signed! */ | |
1959 | ||
1960 | DP(NETIF_MSG_TX_QUEUED, | |
1961 | "hlen %d fix %d csum before fix %x\n", | |
1962 | le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb)); | |
1963 | ||
1964 | /* HW bug: fixup the CSUM */ | |
1965 | pbd->tcp_pseudo_csum = | |
1966 | bnx2x_csum_fix(skb_transport_header(skb), | |
1967 | SKB_CS(skb), fix); | |
1968 | ||
1969 | DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n", | |
1970 | pbd->tcp_pseudo_csum); | |
1971 | } | |
1972 | ||
1973 | return hlen; | |
1974 | } | |
9f6c9258 DK |
1975 | /* called with netif_tx_lock |
1976 | * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call | |
1977 | * netif_wake_queue() | |
1978 | */ | |
1979 | netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1980 | { | |
1981 | struct bnx2x *bp = netdev_priv(dev); | |
1982 | struct bnx2x_fastpath *fp; | |
1983 | struct netdev_queue *txq; | |
1984 | struct sw_tx_bd *tx_buf; | |
1985 | struct eth_tx_start_bd *tx_start_bd; | |
1986 | struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL; | |
523224a3 | 1987 | struct eth_tx_parse_bd_e1x *pbd_e1x = NULL; |
f2e0899f | 1988 | struct eth_tx_parse_bd_e2 *pbd_e2 = NULL; |
9f6c9258 DK |
1989 | u16 pkt_prod, bd_prod; |
1990 | int nbd, fp_index; | |
1991 | dma_addr_t mapping; | |
1992 | u32 xmit_type = bnx2x_xmit_type(bp, skb); | |
1993 | int i; | |
1994 | u8 hlen = 0; | |
1995 | __le16 pkt_size = 0; | |
1996 | struct ethhdr *eth; | |
1997 | u8 mac_type = UNICAST_ADDRESS; | |
1998 | ||
1999 | #ifdef BNX2X_STOP_ON_ERROR | |
2000 | if (unlikely(bp->panic)) | |
2001 | return NETDEV_TX_BUSY; | |
2002 | #endif | |
2003 | ||
2004 | fp_index = skb_get_queue_mapping(skb); | |
2005 | txq = netdev_get_tx_queue(dev, fp_index); | |
2006 | ||
2007 | fp = &bp->fp[fp_index]; | |
2008 | ||
2009 | if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) { | |
2010 | fp->eth_q_stats.driver_xoff++; | |
2011 | netif_tx_stop_queue(txq); | |
2012 | BNX2X_ERR("BUG! Tx ring full when queue awake!\n"); | |
2013 | return NETDEV_TX_BUSY; | |
2014 | } | |
2015 | ||
f2e0899f DK |
2016 | DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x " |
2017 | "protocol(%x,%x) gso type %x xmit_type %x\n", | |
2018 | fp_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr, | |
9f6c9258 DK |
2019 | ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type); |
2020 | ||
2021 | eth = (struct ethhdr *)skb->data; | |
2022 | ||
2023 | /* set flag according to packet type (UNICAST_ADDRESS is default)*/ | |
2024 | if (unlikely(is_multicast_ether_addr(eth->h_dest))) { | |
2025 | if (is_broadcast_ether_addr(eth->h_dest)) | |
2026 | mac_type = BROADCAST_ADDRESS; | |
2027 | else | |
2028 | mac_type = MULTICAST_ADDRESS; | |
2029 | } | |
2030 | ||
2031 | #if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) | |
2032 | /* First, check if we need to linearize the skb (due to FW | |
2033 | restrictions). No need to check fragmentation if page size > 8K | |
2034 | (there will be no violation to FW restrictions) */ | |
2035 | if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) { | |
2036 | /* Statistics of linearization */ | |
2037 | bp->lin_cnt++; | |
2038 | if (skb_linearize(skb) != 0) { | |
2039 | DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - " | |
2040 | "silently dropping this SKB\n"); | |
2041 | dev_kfree_skb_any(skb); | |
2042 | return NETDEV_TX_OK; | |
2043 | } | |
2044 | } | |
2045 | #endif | |
2046 | ||
2047 | /* | |
2048 | Please read carefully. First we use one BD which we mark as start, | |
2049 | then we have a parsing info BD (used for TSO or xsum), | |
2050 | and only then we have the rest of the TSO BDs. | |
2051 | (don't forget to mark the last one as last, | |
2052 | and to unmap only AFTER you write to the BD ...) | |
2053 | And above all, all pdb sizes are in words - NOT DWORDS! | |
2054 | */ | |
2055 | ||
2056 | pkt_prod = fp->tx_pkt_prod++; | |
2057 | bd_prod = TX_BD(fp->tx_bd_prod); | |
2058 | ||
2059 | /* get a tx_buf and first BD */ | |
2060 | tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)]; | |
2061 | tx_start_bd = &fp->tx_desc_ring[bd_prod].start_bd; | |
2062 | ||
2063 | tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; | |
523224a3 DK |
2064 | SET_FLAG(tx_start_bd->general_data, |
2065 | ETH_TX_START_BD_ETH_ADDR_TYPE, | |
2066 | mac_type); | |
9f6c9258 | 2067 | /* header nbd */ |
523224a3 DK |
2068 | SET_FLAG(tx_start_bd->general_data, |
2069 | ETH_TX_START_BD_HDR_NBDS, | |
2070 | 1); | |
9f6c9258 DK |
2071 | |
2072 | /* remember the first BD of the packet */ | |
2073 | tx_buf->first_bd = fp->tx_bd_prod; | |
2074 | tx_buf->skb = skb; | |
2075 | tx_buf->flags = 0; | |
2076 | ||
2077 | DP(NETIF_MSG_TX_QUEUED, | |
2078 | "sending pkt %u @%p next_idx %u bd %u @%p\n", | |
2079 | pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd); | |
2080 | ||
2081 | #ifdef BCM_VLAN | |
2082 | if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb) && | |
2083 | (bp->flags & HW_VLAN_TX_FLAG)) { | |
523224a3 DK |
2084 | tx_start_bd->vlan_or_ethertype = |
2085 | cpu_to_le16(vlan_tx_tag_get(skb)); | |
2086 | tx_start_bd->bd_flags.as_bitfield |= | |
2087 | (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT); | |
9f6c9258 DK |
2088 | } else |
2089 | #endif | |
523224a3 | 2090 | tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod); |
9f6c9258 DK |
2091 | |
2092 | /* turn on parsing and get a BD */ | |
2093 | bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); | |
9f6c9258 | 2094 | |
523224a3 DK |
2095 | if (xmit_type & XMIT_CSUM) { |
2096 | tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM; | |
2097 | ||
2098 | if (xmit_type & XMIT_CSUM_V4) | |
2099 | tx_start_bd->bd_flags.as_bitfield |= | |
2100 | ETH_TX_BD_FLAGS_IP_CSUM; | |
2101 | else | |
2102 | tx_start_bd->bd_flags.as_bitfield |= | |
2103 | ETH_TX_BD_FLAGS_IPV6; | |
9f6c9258 | 2104 | |
523224a3 DK |
2105 | if (!(xmit_type & XMIT_CSUM_TCP)) |
2106 | tx_start_bd->bd_flags.as_bitfield |= | |
2107 | ETH_TX_BD_FLAGS_IS_UDP; | |
2108 | } | |
9f6c9258 | 2109 | |
f2e0899f DK |
2110 | if (CHIP_IS_E2(bp)) { |
2111 | pbd_e2 = &fp->tx_desc_ring[bd_prod].parse_bd_e2; | |
2112 | memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2)); | |
2113 | /* Set PBD in checksum offload case */ | |
2114 | if (xmit_type & XMIT_CSUM) | |
2115 | hlen = bnx2x_set_pbd_csum_e2(bp, | |
2116 | skb, pbd_e2, xmit_type); | |
2117 | } else { | |
2118 | pbd_e1x = &fp->tx_desc_ring[bd_prod].parse_bd_e1x; | |
2119 | memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x)); | |
2120 | /* Set PBD in checksum offload case */ | |
2121 | if (xmit_type & XMIT_CSUM) | |
2122 | hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type); | |
9f6c9258 | 2123 | |
9f6c9258 DK |
2124 | } |
2125 | ||
2126 | mapping = dma_map_single(&bp->pdev->dev, skb->data, | |
2127 | skb_headlen(skb), DMA_TO_DEVICE); | |
2128 | ||
2129 | tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); | |
2130 | tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); | |
2131 | nbd = skb_shinfo(skb)->nr_frags + 2; /* start_bd + pbd + frags */ | |
2132 | tx_start_bd->nbd = cpu_to_le16(nbd); | |
2133 | tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb)); | |
2134 | pkt_size = tx_start_bd->nbytes; | |
2135 | ||
2136 | DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d" | |
2137 | " nbytes %d flags %x vlan %x\n", | |
2138 | tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo, | |
2139 | le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes), | |
523224a3 DK |
2140 | tx_start_bd->bd_flags.as_bitfield, |
2141 | le16_to_cpu(tx_start_bd->vlan_or_ethertype)); | |
9f6c9258 DK |
2142 | |
2143 | if (xmit_type & XMIT_GSO) { | |
2144 | ||
2145 | DP(NETIF_MSG_TX_QUEUED, | |
2146 | "TSO packet len %d hlen %d total len %d tso size %d\n", | |
2147 | skb->len, hlen, skb_headlen(skb), | |
2148 | skb_shinfo(skb)->gso_size); | |
2149 | ||
2150 | tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO; | |
2151 | ||
2152 | if (unlikely(skb_headlen(skb) > hlen)) | |
2153 | bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd, | |
2154 | hlen, bd_prod, ++nbd); | |
f2e0899f DK |
2155 | if (CHIP_IS_E2(bp)) |
2156 | bnx2x_set_pbd_gso_e2(skb, pbd_e2, xmit_type); | |
2157 | else | |
2158 | bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type); | |
9f6c9258 DK |
2159 | } |
2160 | tx_data_bd = (struct eth_tx_bd *)tx_start_bd; | |
2161 | ||
2162 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
2163 | skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
2164 | ||
2165 | bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); | |
2166 | tx_data_bd = &fp->tx_desc_ring[bd_prod].reg_bd; | |
2167 | if (total_pkt_bd == NULL) | |
2168 | total_pkt_bd = &fp->tx_desc_ring[bd_prod].reg_bd; | |
2169 | ||
2170 | mapping = dma_map_page(&bp->pdev->dev, frag->page, | |
2171 | frag->page_offset, | |
2172 | frag->size, DMA_TO_DEVICE); | |
2173 | ||
2174 | tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); | |
2175 | tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); | |
2176 | tx_data_bd->nbytes = cpu_to_le16(frag->size); | |
2177 | le16_add_cpu(&pkt_size, frag->size); | |
2178 | ||
2179 | DP(NETIF_MSG_TX_QUEUED, | |
2180 | "frag %d bd @%p addr (%x:%x) nbytes %d\n", | |
2181 | i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo, | |
2182 | le16_to_cpu(tx_data_bd->nbytes)); | |
2183 | } | |
2184 | ||
2185 | DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd); | |
2186 | ||
2187 | bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); | |
2188 | ||
2189 | /* now send a tx doorbell, counting the next BD | |
2190 | * if the packet contains or ends with it | |
2191 | */ | |
2192 | if (TX_BD_POFF(bd_prod) < nbd) | |
2193 | nbd++; | |
2194 | ||
2195 | if (total_pkt_bd != NULL) | |
2196 | total_pkt_bd->total_pkt_bytes = pkt_size; | |
2197 | ||
523224a3 | 2198 | if (pbd_e1x) |
9f6c9258 | 2199 | DP(NETIF_MSG_TX_QUEUED, |
523224a3 | 2200 | "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u" |
9f6c9258 | 2201 | " tcp_flags %x xsum %x seq %u hlen %u\n", |
523224a3 DK |
2202 | pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w, |
2203 | pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags, | |
2204 | pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq, | |
2205 | le16_to_cpu(pbd_e1x->total_hlen_w)); | |
f2e0899f DK |
2206 | if (pbd_e2) |
2207 | DP(NETIF_MSG_TX_QUEUED, | |
2208 | "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n", | |
2209 | pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid, | |
2210 | pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi, | |
2211 | pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo, | |
2212 | pbd_e2->parsing_data); | |
9f6c9258 DK |
2213 | DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod); |
2214 | ||
2215 | /* | |
2216 | * Make sure that the BD data is updated before updating the producer | |
2217 | * since FW might read the BD right after the producer is updated. | |
2218 | * This is only applicable for weak-ordered memory model archs such | |
2219 | * as IA-64. The following barrier is also mandatory since FW will | |
2220 | * assumes packets must have BDs. | |
2221 | */ | |
2222 | wmb(); | |
2223 | ||
2224 | fp->tx_db.data.prod += nbd; | |
2225 | barrier(); | |
523224a3 | 2226 | DOORBELL(bp, fp->cid, fp->tx_db.raw); |
9f6c9258 DK |
2227 | |
2228 | mmiowb(); | |
2229 | ||
2230 | fp->tx_bd_prod += nbd; | |
2231 | ||
2232 | if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) { | |
2233 | netif_tx_stop_queue(txq); | |
2234 | ||
2235 | /* paired memory barrier is in bnx2x_tx_int(), we have to keep | |
2236 | * ordering of set_bit() in netif_tx_stop_queue() and read of | |
2237 | * fp->bd_tx_cons */ | |
2238 | smp_mb(); | |
2239 | ||
2240 | fp->eth_q_stats.driver_xoff++; | |
2241 | if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3) | |
2242 | netif_tx_wake_queue(txq); | |
2243 | } | |
2244 | fp->tx_pkt++; | |
2245 | ||
2246 | return NETDEV_TX_OK; | |
2247 | } | |
2248 | /* called with rtnl_lock */ | |
2249 | int bnx2x_change_mac_addr(struct net_device *dev, void *p) | |
2250 | { | |
2251 | struct sockaddr *addr = p; | |
2252 | struct bnx2x *bp = netdev_priv(dev); | |
2253 | ||
2254 | if (!is_valid_ether_addr((u8 *)(addr->sa_data))) | |
2255 | return -EINVAL; | |
2256 | ||
2257 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
523224a3 DK |
2258 | if (netif_running(dev)) |
2259 | bnx2x_set_eth_mac(bp, 1); | |
9f6c9258 DK |
2260 | |
2261 | return 0; | |
2262 | } | |
2263 | ||
523224a3 DK |
2264 | void bnx2x_free_mem_bp(struct bnx2x *bp) |
2265 | { | |
2266 | kfree(bp->fp); | |
2267 | kfree(bp->msix_table); | |
2268 | kfree(bp->ilt); | |
2269 | } | |
2270 | ||
2271 | int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp) | |
2272 | { | |
2273 | struct bnx2x_fastpath *fp; | |
2274 | struct msix_entry *tbl; | |
2275 | struct bnx2x_ilt *ilt; | |
2276 | ||
2277 | /* fp array */ | |
2278 | fp = kzalloc(L2_FP_COUNT(bp->l2_cid_count)*sizeof(*fp), GFP_KERNEL); | |
2279 | if (!fp) | |
2280 | goto alloc_err; | |
2281 | bp->fp = fp; | |
2282 | ||
2283 | /* msix table */ | |
2284 | tbl = kzalloc((bp->l2_cid_count + 1) * sizeof(*tbl), | |
2285 | GFP_KERNEL); | |
2286 | if (!tbl) | |
2287 | goto alloc_err; | |
2288 | bp->msix_table = tbl; | |
2289 | ||
2290 | /* ilt */ | |
2291 | ilt = kzalloc(sizeof(*ilt), GFP_KERNEL); | |
2292 | if (!ilt) | |
2293 | goto alloc_err; | |
2294 | bp->ilt = ilt; | |
2295 | ||
2296 | return 0; | |
2297 | alloc_err: | |
2298 | bnx2x_free_mem_bp(bp); | |
2299 | return -ENOMEM; | |
2300 | ||
2301 | } | |
2302 | ||
9f6c9258 DK |
2303 | /* called with rtnl_lock */ |
2304 | int bnx2x_change_mtu(struct net_device *dev, int new_mtu) | |
2305 | { | |
2306 | struct bnx2x *bp = netdev_priv(dev); | |
2307 | int rc = 0; | |
2308 | ||
2309 | if (bp->recovery_state != BNX2X_RECOVERY_DONE) { | |
2310 | printk(KERN_ERR "Handling parity error recovery. Try again later\n"); | |
2311 | return -EAGAIN; | |
2312 | } | |
2313 | ||
2314 | if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) || | |
2315 | ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) | |
2316 | return -EINVAL; | |
2317 | ||
2318 | /* This does not race with packet allocation | |
2319 | * because the actual alloc size is | |
2320 | * only updated as part of load | |
2321 | */ | |
2322 | dev->mtu = new_mtu; | |
2323 | ||
2324 | if (netif_running(dev)) { | |
2325 | bnx2x_nic_unload(bp, UNLOAD_NORMAL); | |
2326 | rc = bnx2x_nic_load(bp, LOAD_NORMAL); | |
2327 | } | |
2328 | ||
2329 | return rc; | |
2330 | } | |
2331 | ||
2332 | void bnx2x_tx_timeout(struct net_device *dev) | |
2333 | { | |
2334 | struct bnx2x *bp = netdev_priv(dev); | |
2335 | ||
2336 | #ifdef BNX2X_STOP_ON_ERROR | |
2337 | if (!bp->panic) | |
2338 | bnx2x_panic(); | |
2339 | #endif | |
2340 | /* This allows the netif to be shutdown gracefully before resetting */ | |
2341 | schedule_delayed_work(&bp->reset_task, 0); | |
2342 | } | |
2343 | ||
2344 | #ifdef BCM_VLAN | |
2345 | /* called with rtnl_lock */ | |
2346 | void bnx2x_vlan_rx_register(struct net_device *dev, | |
2347 | struct vlan_group *vlgrp) | |
2348 | { | |
2349 | struct bnx2x *bp = netdev_priv(dev); | |
2350 | ||
2351 | bp->vlgrp = vlgrp; | |
9f6c9258 DK |
2352 | } |
2353 | ||
2354 | #endif | |
2355 | int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state) | |
2356 | { | |
2357 | struct net_device *dev = pci_get_drvdata(pdev); | |
2358 | struct bnx2x *bp; | |
2359 | ||
2360 | if (!dev) { | |
2361 | dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); | |
2362 | return -ENODEV; | |
2363 | } | |
2364 | bp = netdev_priv(dev); | |
2365 | ||
2366 | rtnl_lock(); | |
2367 | ||
2368 | pci_save_state(pdev); | |
2369 | ||
2370 | if (!netif_running(dev)) { | |
2371 | rtnl_unlock(); | |
2372 | return 0; | |
2373 | } | |
2374 | ||
2375 | netif_device_detach(dev); | |
2376 | ||
2377 | bnx2x_nic_unload(bp, UNLOAD_CLOSE); | |
2378 | ||
2379 | bnx2x_set_power_state(bp, pci_choose_state(pdev, state)); | |
2380 | ||
2381 | rtnl_unlock(); | |
2382 | ||
2383 | return 0; | |
2384 | } | |
2385 | ||
2386 | int bnx2x_resume(struct pci_dev *pdev) | |
2387 | { | |
2388 | struct net_device *dev = pci_get_drvdata(pdev); | |
2389 | struct bnx2x *bp; | |
2390 | int rc; | |
2391 | ||
2392 | if (!dev) { | |
2393 | dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); | |
2394 | return -ENODEV; | |
2395 | } | |
2396 | bp = netdev_priv(dev); | |
2397 | ||
2398 | if (bp->recovery_state != BNX2X_RECOVERY_DONE) { | |
2399 | printk(KERN_ERR "Handling parity error recovery. Try again later\n"); | |
2400 | return -EAGAIN; | |
2401 | } | |
2402 | ||
2403 | rtnl_lock(); | |
2404 | ||
2405 | pci_restore_state(pdev); | |
2406 | ||
2407 | if (!netif_running(dev)) { | |
2408 | rtnl_unlock(); | |
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | bnx2x_set_power_state(bp, PCI_D0); | |
2413 | netif_device_attach(dev); | |
2414 | ||
f2e0899f DK |
2415 | /* Since the chip was reset, clear the FW sequence number */ |
2416 | bp->fw_seq = 0; | |
9f6c9258 DK |
2417 | rc = bnx2x_nic_load(bp, LOAD_OPEN); |
2418 | ||
2419 | rtnl_unlock(); | |
2420 | ||
2421 | return rc; | |
2422 | } |