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6b7c5b94 SP |
1 | /* |
2 | * Copyright (C) 2005 - 2009 ServerEngines | |
3 | * All rights reserved. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License version 2 | |
7 | * as published by the Free Software Foundation. The full GNU General | |
8 | * Public License is included in this distribution in the file called COPYING. | |
9 | * | |
10 | * Contact Information: | |
11 | * linux-drivers@serverengines.com | |
12 | * | |
13 | * ServerEngines | |
14 | * 209 N. Fair Oaks Ave | |
15 | * Sunnyvale, CA 94085 | |
16 | */ | |
17 | ||
18 | #include "be.h" | |
65f71b8b | 19 | #include <asm/div64.h> |
6b7c5b94 SP |
20 | |
21 | MODULE_VERSION(DRV_VER); | |
22 | MODULE_DEVICE_TABLE(pci, be_dev_ids); | |
23 | MODULE_DESCRIPTION(DRV_DESC " " DRV_VER); | |
24 | MODULE_AUTHOR("ServerEngines Corporation"); | |
25 | MODULE_LICENSE("GPL"); | |
26 | ||
27 | static unsigned int rx_frag_size = 2048; | |
28 | module_param(rx_frag_size, uint, S_IRUGO); | |
29 | MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data."); | |
30 | ||
6b7c5b94 | 31 | static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = { |
c4ca2374 AK |
32 | { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, |
33 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, | |
34 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, | |
6b7c5b94 SP |
35 | { 0 } |
36 | }; | |
37 | MODULE_DEVICE_TABLE(pci, be_dev_ids); | |
38 | ||
39 | static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q) | |
40 | { | |
41 | struct be_dma_mem *mem = &q->dma_mem; | |
42 | if (mem->va) | |
43 | pci_free_consistent(adapter->pdev, mem->size, | |
44 | mem->va, mem->dma); | |
45 | } | |
46 | ||
47 | static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q, | |
48 | u16 len, u16 entry_size) | |
49 | { | |
50 | struct be_dma_mem *mem = &q->dma_mem; | |
51 | ||
52 | memset(q, 0, sizeof(*q)); | |
53 | q->len = len; | |
54 | q->entry_size = entry_size; | |
55 | mem->size = len * entry_size; | |
56 | mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma); | |
57 | if (!mem->va) | |
58 | return -1; | |
59 | memset(mem->va, 0, mem->size); | |
60 | return 0; | |
61 | } | |
62 | ||
6b7c5b94 SP |
63 | static void be_intr_set(struct be_ctrl_info *ctrl, bool enable) |
64 | { | |
65 | u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET; | |
66 | u32 reg = ioread32(addr); | |
67 | u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; | |
68 | if (!enabled && enable) { | |
69 | reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; | |
70 | } else if (enabled && !enable) { | |
71 | reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; | |
72 | } else { | |
73 | printk(KERN_WARNING DRV_NAME | |
74 | ": bad value in membar_int_ctrl reg=0x%x\n", reg); | |
75 | return; | |
76 | } | |
77 | iowrite32(reg, addr); | |
78 | } | |
79 | ||
80 | static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted) | |
81 | { | |
82 | u32 val = 0; | |
83 | val |= qid & DB_RQ_RING_ID_MASK; | |
84 | val |= posted << DB_RQ_NUM_POSTED_SHIFT; | |
85 | iowrite32(val, ctrl->db + DB_RQ_OFFSET); | |
86 | } | |
87 | ||
88 | static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted) | |
89 | { | |
90 | u32 val = 0; | |
91 | val |= qid & DB_TXULP_RING_ID_MASK; | |
92 | val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT; | |
93 | iowrite32(val, ctrl->db + DB_TXULP1_OFFSET); | |
94 | } | |
95 | ||
96 | static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid, | |
97 | bool arm, bool clear_int, u16 num_popped) | |
98 | { | |
99 | u32 val = 0; | |
100 | val |= qid & DB_EQ_RING_ID_MASK; | |
101 | if (arm) | |
102 | val |= 1 << DB_EQ_REARM_SHIFT; | |
103 | if (clear_int) | |
104 | val |= 1 << DB_EQ_CLR_SHIFT; | |
105 | val |= 1 << DB_EQ_EVNT_SHIFT; | |
106 | val |= num_popped << DB_EQ_NUM_POPPED_SHIFT; | |
107 | iowrite32(val, ctrl->db + DB_EQ_OFFSET); | |
108 | } | |
109 | ||
5fb379ee | 110 | void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid, |
6b7c5b94 SP |
111 | bool arm, u16 num_popped) |
112 | { | |
113 | u32 val = 0; | |
114 | val |= qid & DB_CQ_RING_ID_MASK; | |
115 | if (arm) | |
116 | val |= 1 << DB_CQ_REARM_SHIFT; | |
117 | val |= num_popped << DB_CQ_NUM_POPPED_SHIFT; | |
118 | iowrite32(val, ctrl->db + DB_CQ_OFFSET); | |
119 | } | |
120 | ||
121 | ||
122 | static int be_mac_addr_set(struct net_device *netdev, void *p) | |
123 | { | |
124 | struct be_adapter *adapter = netdev_priv(netdev); | |
125 | struct sockaddr *addr = p; | |
126 | int status = 0; | |
127 | ||
128 | if (netif_running(netdev)) { | |
129 | status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle, | |
130 | adapter->pmac_id); | |
131 | if (status) | |
132 | return status; | |
133 | ||
134 | status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data, | |
135 | adapter->if_handle, &adapter->pmac_id); | |
136 | } | |
137 | ||
138 | if (!status) | |
139 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
140 | ||
141 | return status; | |
142 | } | |
143 | ||
144 | static void netdev_stats_update(struct be_adapter *adapter) | |
145 | { | |
146 | struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va); | |
147 | struct be_rxf_stats *rxf_stats = &hw_stats->rxf; | |
148 | struct be_port_rxf_stats *port_stats = | |
149 | &rxf_stats->port[adapter->port_num]; | |
150 | struct net_device_stats *dev_stats = &adapter->stats.net_stats; | |
68110868 | 151 | struct be_erx_stats *erx_stats = &hw_stats->erx; |
6b7c5b94 SP |
152 | |
153 | dev_stats->rx_packets = port_stats->rx_total_frames; | |
154 | dev_stats->tx_packets = port_stats->tx_unicastframes + | |
155 | port_stats->tx_multicastframes + port_stats->tx_broadcastframes; | |
156 | dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 | | |
157 | (u64) port_stats->rx_bytes_lsd; | |
158 | dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 | | |
159 | (u64) port_stats->tx_bytes_lsd; | |
160 | ||
161 | /* bad pkts received */ | |
162 | dev_stats->rx_errors = port_stats->rx_crc_errors + | |
163 | port_stats->rx_alignment_symbol_errors + | |
164 | port_stats->rx_in_range_errors + | |
68110868 SP |
165 | port_stats->rx_out_range_errors + |
166 | port_stats->rx_frame_too_long + | |
167 | port_stats->rx_dropped_too_small + | |
168 | port_stats->rx_dropped_too_short + | |
169 | port_stats->rx_dropped_header_too_small + | |
170 | port_stats->rx_dropped_tcp_length + | |
171 | port_stats->rx_dropped_runt + | |
172 | port_stats->rx_tcp_checksum_errs + | |
173 | port_stats->rx_ip_checksum_errs + | |
174 | port_stats->rx_udp_checksum_errs; | |
175 | ||
176 | /* no space in linux buffers: best possible approximation */ | |
177 | dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0]; | |
6b7c5b94 SP |
178 | |
179 | /* detailed rx errors */ | |
180 | dev_stats->rx_length_errors = port_stats->rx_in_range_errors + | |
68110868 SP |
181 | port_stats->rx_out_range_errors + |
182 | port_stats->rx_frame_too_long; | |
183 | ||
6b7c5b94 SP |
184 | /* receive ring buffer overflow */ |
185 | dev_stats->rx_over_errors = 0; | |
68110868 | 186 | |
6b7c5b94 SP |
187 | dev_stats->rx_crc_errors = port_stats->rx_crc_errors; |
188 | ||
189 | /* frame alignment errors */ | |
190 | dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors; | |
68110868 | 191 | |
6b7c5b94 SP |
192 | /* receiver fifo overrun */ |
193 | /* drops_no_pbuf is no per i/f, it's per BE card */ | |
194 | dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow + | |
195 | port_stats->rx_input_fifo_overflow + | |
196 | rxf_stats->rx_drops_no_pbuf; | |
197 | /* receiver missed packetd */ | |
198 | dev_stats->rx_missed_errors = 0; | |
68110868 SP |
199 | |
200 | /* packet transmit problems */ | |
201 | dev_stats->tx_errors = 0; | |
202 | ||
203 | /* no space available in linux */ | |
204 | dev_stats->tx_dropped = 0; | |
205 | ||
206 | dev_stats->multicast = port_stats->tx_multicastframes; | |
207 | dev_stats->collisions = 0; | |
208 | ||
6b7c5b94 SP |
209 | /* detailed tx_errors */ |
210 | dev_stats->tx_aborted_errors = 0; | |
211 | dev_stats->tx_carrier_errors = 0; | |
212 | dev_stats->tx_fifo_errors = 0; | |
213 | dev_stats->tx_heartbeat_errors = 0; | |
214 | dev_stats->tx_window_errors = 0; | |
215 | } | |
216 | ||
217 | static void be_link_status_update(struct be_adapter *adapter) | |
218 | { | |
219 | struct be_link_info *prev = &adapter->link; | |
220 | struct be_link_info now = { 0 }; | |
221 | struct net_device *netdev = adapter->netdev; | |
222 | ||
223 | be_cmd_link_status_query(&adapter->ctrl, &now); | |
224 | ||
225 | /* If link came up or went down */ | |
226 | if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO || | |
227 | prev->speed == PHY_LINK_SPEED_ZERO)) { | |
228 | if (now.speed == PHY_LINK_SPEED_ZERO) { | |
229 | netif_stop_queue(netdev); | |
230 | netif_carrier_off(netdev); | |
231 | printk(KERN_INFO "%s: Link down\n", netdev->name); | |
232 | } else { | |
233 | netif_start_queue(netdev); | |
234 | netif_carrier_on(netdev); | |
235 | printk(KERN_INFO "%s: Link up\n", netdev->name); | |
236 | } | |
237 | } | |
238 | *prev = now; | |
239 | } | |
240 | ||
241 | /* Update the EQ delay n BE based on the RX frags consumed / sec */ | |
242 | static void be_rx_eqd_update(struct be_adapter *adapter) | |
243 | { | |
6b7c5b94 SP |
244 | struct be_ctrl_info *ctrl = &adapter->ctrl; |
245 | struct be_eq_obj *rx_eq = &adapter->rx_eq; | |
246 | struct be_drvr_stats *stats = &adapter->stats.drvr_stats; | |
4097f663 SP |
247 | ulong now = jiffies; |
248 | u32 eqd; | |
249 | ||
250 | if (!rx_eq->enable_aic) | |
251 | return; | |
252 | ||
253 | /* Wrapped around */ | |
254 | if (time_before(now, stats->rx_fps_jiffies)) { | |
255 | stats->rx_fps_jiffies = now; | |
256 | return; | |
257 | } | |
6b7c5b94 SP |
258 | |
259 | /* Update once a second */ | |
4097f663 | 260 | if ((now - stats->rx_fps_jiffies) < HZ) |
6b7c5b94 SP |
261 | return; |
262 | ||
263 | stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) / | |
4097f663 | 264 | ((now - stats->rx_fps_jiffies) / HZ); |
6b7c5b94 | 265 | |
4097f663 | 266 | stats->rx_fps_jiffies = now; |
6b7c5b94 SP |
267 | stats->be_prev_rx_frags = stats->be_rx_frags; |
268 | eqd = stats->be_rx_fps / 110000; | |
269 | eqd = eqd << 3; | |
270 | if (eqd > rx_eq->max_eqd) | |
271 | eqd = rx_eq->max_eqd; | |
272 | if (eqd < rx_eq->min_eqd) | |
273 | eqd = rx_eq->min_eqd; | |
274 | if (eqd < 10) | |
275 | eqd = 0; | |
276 | if (eqd != rx_eq->cur_eqd) | |
277 | be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd); | |
278 | ||
279 | rx_eq->cur_eqd = eqd; | |
280 | } | |
281 | ||
6b7c5b94 SP |
282 | static struct net_device_stats *be_get_stats(struct net_device *dev) |
283 | { | |
284 | struct be_adapter *adapter = netdev_priv(dev); | |
285 | ||
286 | return &adapter->stats.net_stats; | |
287 | } | |
288 | ||
65f71b8b SH |
289 | static u32 be_calc_rate(u64 bytes, unsigned long ticks) |
290 | { | |
291 | u64 rate = bytes; | |
292 | ||
293 | do_div(rate, ticks / HZ); | |
294 | rate <<= 3; /* bytes/sec -> bits/sec */ | |
295 | do_div(rate, 1000000ul); /* MB/Sec */ | |
296 | ||
297 | return rate; | |
298 | } | |
299 | ||
4097f663 SP |
300 | static void be_tx_rate_update(struct be_adapter *adapter) |
301 | { | |
302 | struct be_drvr_stats *stats = drvr_stats(adapter); | |
303 | ulong now = jiffies; | |
304 | ||
305 | /* Wrapped around? */ | |
306 | if (time_before(now, stats->be_tx_jiffies)) { | |
307 | stats->be_tx_jiffies = now; | |
308 | return; | |
309 | } | |
310 | ||
311 | /* Update tx rate once in two seconds */ | |
312 | if ((now - stats->be_tx_jiffies) > 2 * HZ) { | |
65f71b8b SH |
313 | stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes |
314 | - stats->be_tx_bytes_prev, | |
315 | now - stats->be_tx_jiffies); | |
4097f663 SP |
316 | stats->be_tx_jiffies = now; |
317 | stats->be_tx_bytes_prev = stats->be_tx_bytes; | |
318 | } | |
319 | } | |
320 | ||
6b7c5b94 SP |
321 | static void be_tx_stats_update(struct be_adapter *adapter, |
322 | u32 wrb_cnt, u32 copied, bool stopped) | |
323 | { | |
4097f663 | 324 | struct be_drvr_stats *stats = drvr_stats(adapter); |
6b7c5b94 SP |
325 | stats->be_tx_reqs++; |
326 | stats->be_tx_wrbs += wrb_cnt; | |
327 | stats->be_tx_bytes += copied; | |
328 | if (stopped) | |
329 | stats->be_tx_stops++; | |
6b7c5b94 SP |
330 | } |
331 | ||
332 | /* Determine number of WRB entries needed to xmit data in an skb */ | |
333 | static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy) | |
334 | { | |
ebc8d2ab DM |
335 | int cnt = (skb->len > skb->data_len); |
336 | ||
337 | cnt += skb_shinfo(skb)->nr_frags; | |
338 | ||
6b7c5b94 SP |
339 | /* to account for hdr wrb */ |
340 | cnt++; | |
341 | if (cnt & 1) { | |
342 | /* add a dummy to make it an even num */ | |
343 | cnt++; | |
344 | *dummy = true; | |
345 | } else | |
346 | *dummy = false; | |
347 | BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT); | |
348 | return cnt; | |
349 | } | |
350 | ||
351 | static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len) | |
352 | { | |
353 | wrb->frag_pa_hi = upper_32_bits(addr); | |
354 | wrb->frag_pa_lo = addr & 0xFFFFFFFF; | |
355 | wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK; | |
356 | } | |
357 | ||
358 | static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb, | |
359 | bool vlan, u32 wrb_cnt, u32 len) | |
360 | { | |
361 | memset(hdr, 0, sizeof(*hdr)); | |
362 | ||
363 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1); | |
364 | ||
365 | if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) { | |
366 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1); | |
367 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss, | |
368 | hdr, skb_shinfo(skb)->gso_size); | |
369 | } else if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
370 | if (is_tcp_pkt(skb)) | |
371 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1); | |
372 | else if (is_udp_pkt(skb)) | |
373 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1); | |
374 | } | |
375 | ||
376 | if (vlan && vlan_tx_tag_present(skb)) { | |
377 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1); | |
378 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag, | |
379 | hdr, vlan_tx_tag_get(skb)); | |
380 | } | |
381 | ||
382 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1); | |
383 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1); | |
384 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt); | |
385 | AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len); | |
386 | } | |
387 | ||
388 | ||
389 | static int make_tx_wrbs(struct be_adapter *adapter, | |
390 | struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb) | |
391 | { | |
392 | u64 busaddr; | |
393 | u32 i, copied = 0; | |
394 | struct pci_dev *pdev = adapter->pdev; | |
395 | struct sk_buff *first_skb = skb; | |
396 | struct be_queue_info *txq = &adapter->tx_obj.q; | |
397 | struct be_eth_wrb *wrb; | |
398 | struct be_eth_hdr_wrb *hdr; | |
399 | ||
400 | atomic_add(wrb_cnt, &txq->used); | |
401 | hdr = queue_head_node(txq); | |
402 | queue_head_inc(txq); | |
403 | ||
ebc8d2ab DM |
404 | if (skb->len > skb->data_len) { |
405 | int len = skb->len - skb->data_len; | |
406 | busaddr = pci_map_single(pdev, skb->data, len, | |
407 | PCI_DMA_TODEVICE); | |
408 | wrb = queue_head_node(txq); | |
409 | wrb_fill(wrb, busaddr, len); | |
410 | be_dws_cpu_to_le(wrb, sizeof(*wrb)); | |
411 | queue_head_inc(txq); | |
412 | copied += len; | |
413 | } | |
6b7c5b94 | 414 | |
ebc8d2ab DM |
415 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
416 | struct skb_frag_struct *frag = | |
417 | &skb_shinfo(skb)->frags[i]; | |
418 | busaddr = pci_map_page(pdev, frag->page, | |
419 | frag->page_offset, | |
420 | frag->size, PCI_DMA_TODEVICE); | |
421 | wrb = queue_head_node(txq); | |
422 | wrb_fill(wrb, busaddr, frag->size); | |
423 | be_dws_cpu_to_le(wrb, sizeof(*wrb)); | |
424 | queue_head_inc(txq); | |
425 | copied += frag->size; | |
6b7c5b94 SP |
426 | } |
427 | ||
428 | if (dummy_wrb) { | |
429 | wrb = queue_head_node(txq); | |
430 | wrb_fill(wrb, 0, 0); | |
431 | be_dws_cpu_to_le(wrb, sizeof(*wrb)); | |
432 | queue_head_inc(txq); | |
433 | } | |
434 | ||
435 | wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false, | |
436 | wrb_cnt, copied); | |
437 | be_dws_cpu_to_le(hdr, sizeof(*hdr)); | |
438 | ||
439 | return copied; | |
440 | } | |
441 | ||
442 | static int be_xmit(struct sk_buff *skb, struct net_device *netdev) | |
443 | { | |
444 | struct be_adapter *adapter = netdev_priv(netdev); | |
445 | struct be_tx_obj *tx_obj = &adapter->tx_obj; | |
446 | struct be_queue_info *txq = &tx_obj->q; | |
447 | u32 wrb_cnt = 0, copied = 0; | |
448 | u32 start = txq->head; | |
449 | bool dummy_wrb, stopped = false; | |
450 | ||
451 | wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb); | |
452 | ||
453 | copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb); | |
454 | ||
455 | /* record the sent skb in the sent_skb table */ | |
456 | BUG_ON(tx_obj->sent_skb_list[start]); | |
457 | tx_obj->sent_skb_list[start] = skb; | |
458 | ||
459 | /* Ensure that txq has space for the next skb; Else stop the queue | |
460 | * *BEFORE* ringing the tx doorbell, so that we serialze the | |
461 | * tx compls of the current transmit which'll wake up the queue | |
462 | */ | |
463 | if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) { | |
464 | netif_stop_queue(netdev); | |
465 | stopped = true; | |
466 | } | |
467 | ||
468 | be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt); | |
469 | ||
6b7c5b94 SP |
470 | be_tx_stats_update(adapter, wrb_cnt, copied, stopped); |
471 | return NETDEV_TX_OK; | |
472 | } | |
473 | ||
474 | static int be_change_mtu(struct net_device *netdev, int new_mtu) | |
475 | { | |
476 | struct be_adapter *adapter = netdev_priv(netdev); | |
477 | if (new_mtu < BE_MIN_MTU || | |
478 | new_mtu > BE_MAX_JUMBO_FRAME_SIZE) { | |
479 | dev_info(&adapter->pdev->dev, | |
480 | "MTU must be between %d and %d bytes\n", | |
481 | BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE); | |
482 | return -EINVAL; | |
483 | } | |
484 | dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n", | |
485 | netdev->mtu, new_mtu); | |
486 | netdev->mtu = new_mtu; | |
487 | return 0; | |
488 | } | |
489 | ||
490 | /* | |
491 | * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured, | |
492 | * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured, | |
493 | * set the BE in promiscuous VLAN mode. | |
494 | */ | |
1ab1ab75 | 495 | static void be_vid_config(struct net_device *netdev) |
6b7c5b94 SP |
496 | { |
497 | struct be_adapter *adapter = netdev_priv(netdev); | |
498 | u16 vtag[BE_NUM_VLANS_SUPPORTED]; | |
499 | u16 ntags = 0, i; | |
500 | ||
501 | if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) { | |
502 | /* Construct VLAN Table to give to HW */ | |
503 | for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { | |
504 | if (adapter->vlan_tag[i]) { | |
505 | vtag[ntags] = cpu_to_le16(i); | |
506 | ntags++; | |
507 | } | |
508 | } | |
509 | be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle, | |
510 | vtag, ntags, 1, 0); | |
511 | } else { | |
512 | be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle, | |
513 | NULL, 0, 1, 1); | |
514 | } | |
515 | } | |
516 | ||
517 | static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp) | |
518 | { | |
519 | struct be_adapter *adapter = netdev_priv(netdev); | |
520 | struct be_eq_obj *rx_eq = &adapter->rx_eq; | |
521 | struct be_eq_obj *tx_eq = &adapter->tx_eq; | |
522 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
523 | ||
524 | be_eq_notify(ctrl, rx_eq->q.id, false, false, 0); | |
525 | be_eq_notify(ctrl, tx_eq->q.id, false, false, 0); | |
526 | adapter->vlan_grp = grp; | |
527 | be_eq_notify(ctrl, rx_eq->q.id, true, false, 0); | |
528 | be_eq_notify(ctrl, tx_eq->q.id, true, false, 0); | |
529 | } | |
530 | ||
531 | static void be_vlan_add_vid(struct net_device *netdev, u16 vid) | |
532 | { | |
533 | struct be_adapter *adapter = netdev_priv(netdev); | |
534 | ||
535 | adapter->num_vlans++; | |
536 | adapter->vlan_tag[vid] = 1; | |
537 | ||
1ab1ab75 | 538 | be_vid_config(netdev); |
6b7c5b94 SP |
539 | } |
540 | ||
541 | static void be_vlan_rem_vid(struct net_device *netdev, u16 vid) | |
542 | { | |
543 | struct be_adapter *adapter = netdev_priv(netdev); | |
544 | ||
545 | adapter->num_vlans--; | |
546 | adapter->vlan_tag[vid] = 0; | |
547 | ||
548 | vlan_group_set_device(adapter->vlan_grp, vid, NULL); | |
1ab1ab75 | 549 | be_vid_config(netdev); |
6b7c5b94 SP |
550 | } |
551 | ||
24307eef | 552 | static void be_set_multicast_list(struct net_device *netdev) |
6b7c5b94 SP |
553 | { |
554 | struct be_adapter *adapter = netdev_priv(netdev); | |
24307eef | 555 | struct be_ctrl_info *ctrl = &adapter->ctrl; |
6b7c5b94 | 556 | |
24307eef SP |
557 | if (netdev->flags & IFF_PROMISC) { |
558 | be_cmd_promiscuous_config(ctrl, adapter->port_num, 1); | |
559 | adapter->promiscuous = true; | |
560 | goto done; | |
6b7c5b94 SP |
561 | } |
562 | ||
24307eef SP |
563 | /* BE was previously in promiscous mode; disable it */ |
564 | if (adapter->promiscuous) { | |
565 | adapter->promiscuous = false; | |
566 | be_cmd_promiscuous_config(ctrl, adapter->port_num, 0); | |
6b7c5b94 SP |
567 | } |
568 | ||
24307eef SP |
569 | if (netdev->flags & IFF_ALLMULTI) { |
570 | be_cmd_multicast_set(ctrl, adapter->if_handle, NULL, 0); | |
571 | goto done; | |
6b7c5b94 | 572 | } |
6b7c5b94 | 573 | |
24307eef SP |
574 | be_cmd_multicast_set(ctrl, adapter->if_handle, netdev->mc_list, |
575 | netdev->mc_count); | |
576 | done: | |
577 | return; | |
6b7c5b94 SP |
578 | } |
579 | ||
4097f663 | 580 | static void be_rx_rate_update(struct be_adapter *adapter) |
6b7c5b94 | 581 | { |
4097f663 SP |
582 | struct be_drvr_stats *stats = drvr_stats(adapter); |
583 | ulong now = jiffies; | |
6b7c5b94 | 584 | |
4097f663 SP |
585 | /* Wrapped around */ |
586 | if (time_before(now, stats->be_rx_jiffies)) { | |
587 | stats->be_rx_jiffies = now; | |
588 | return; | |
589 | } | |
6b7c5b94 SP |
590 | |
591 | /* Update the rate once in two seconds */ | |
4097f663 | 592 | if ((now - stats->be_rx_jiffies) < 2 * HZ) |
6b7c5b94 SP |
593 | return; |
594 | ||
65f71b8b SH |
595 | stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes |
596 | - stats->be_rx_bytes_prev, | |
597 | now - stats->be_rx_jiffies); | |
4097f663 | 598 | stats->be_rx_jiffies = now; |
6b7c5b94 SP |
599 | stats->be_rx_bytes_prev = stats->be_rx_bytes; |
600 | } | |
601 | ||
4097f663 SP |
602 | static void be_rx_stats_update(struct be_adapter *adapter, |
603 | u32 pktsize, u16 numfrags) | |
604 | { | |
605 | struct be_drvr_stats *stats = drvr_stats(adapter); | |
606 | ||
607 | stats->be_rx_compl++; | |
608 | stats->be_rx_frags += numfrags; | |
609 | stats->be_rx_bytes += pktsize; | |
610 | } | |
611 | ||
728a9972 AK |
612 | static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso) |
613 | { | |
614 | u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk; | |
615 | ||
616 | l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp); | |
617 | ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp); | |
618 | ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp); | |
619 | if (ip_version) { | |
620 | tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp); | |
621 | udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp); | |
622 | } | |
623 | ipv6_chk = (ip_version && (tcpf || udpf)); | |
624 | ||
625 | return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true; | |
626 | } | |
627 | ||
6b7c5b94 SP |
628 | static struct be_rx_page_info * |
629 | get_rx_page_info(struct be_adapter *adapter, u16 frag_idx) | |
630 | { | |
631 | struct be_rx_page_info *rx_page_info; | |
632 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
633 | ||
634 | rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx]; | |
635 | BUG_ON(!rx_page_info->page); | |
636 | ||
637 | if (rx_page_info->last_page_user) | |
638 | pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus), | |
639 | adapter->big_page_size, PCI_DMA_FROMDEVICE); | |
640 | ||
641 | atomic_dec(&rxq->used); | |
642 | return rx_page_info; | |
643 | } | |
644 | ||
645 | /* Throwaway the data in the Rx completion */ | |
646 | static void be_rx_compl_discard(struct be_adapter *adapter, | |
647 | struct be_eth_rx_compl *rxcp) | |
648 | { | |
649 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
650 | struct be_rx_page_info *page_info; | |
651 | u16 rxq_idx, i, num_rcvd; | |
652 | ||
653 | rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); | |
654 | num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); | |
655 | ||
656 | for (i = 0; i < num_rcvd; i++) { | |
657 | page_info = get_rx_page_info(adapter, rxq_idx); | |
658 | put_page(page_info->page); | |
659 | memset(page_info, 0, sizeof(*page_info)); | |
660 | index_inc(&rxq_idx, rxq->len); | |
661 | } | |
662 | } | |
663 | ||
664 | /* | |
665 | * skb_fill_rx_data forms a complete skb for an ether frame | |
666 | * indicated by rxcp. | |
667 | */ | |
668 | static void skb_fill_rx_data(struct be_adapter *adapter, | |
669 | struct sk_buff *skb, struct be_eth_rx_compl *rxcp) | |
670 | { | |
671 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
672 | struct be_rx_page_info *page_info; | |
673 | u16 rxq_idx, i, num_rcvd; | |
674 | u32 pktsize, hdr_len, curr_frag_len; | |
675 | u8 *start; | |
676 | ||
677 | rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); | |
678 | pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp); | |
679 | num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); | |
680 | ||
681 | page_info = get_rx_page_info(adapter, rxq_idx); | |
682 | ||
683 | start = page_address(page_info->page) + page_info->page_offset; | |
684 | prefetch(start); | |
685 | ||
686 | /* Copy data in the first descriptor of this completion */ | |
687 | curr_frag_len = min(pktsize, rx_frag_size); | |
688 | ||
689 | /* Copy the header portion into skb_data */ | |
690 | hdr_len = min((u32)BE_HDR_LEN, curr_frag_len); | |
691 | memcpy(skb->data, start, hdr_len); | |
692 | skb->len = curr_frag_len; | |
693 | if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */ | |
694 | /* Complete packet has now been moved to data */ | |
695 | put_page(page_info->page); | |
696 | skb->data_len = 0; | |
697 | skb->tail += curr_frag_len; | |
698 | } else { | |
699 | skb_shinfo(skb)->nr_frags = 1; | |
700 | skb_shinfo(skb)->frags[0].page = page_info->page; | |
701 | skb_shinfo(skb)->frags[0].page_offset = | |
702 | page_info->page_offset + hdr_len; | |
703 | skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len; | |
704 | skb->data_len = curr_frag_len - hdr_len; | |
705 | skb->tail += hdr_len; | |
706 | } | |
707 | memset(page_info, 0, sizeof(*page_info)); | |
708 | ||
709 | if (pktsize <= rx_frag_size) { | |
710 | BUG_ON(num_rcvd != 1); | |
76fbb429 | 711 | goto done; |
6b7c5b94 SP |
712 | } |
713 | ||
714 | /* More frags present for this completion */ | |
715 | pktsize -= curr_frag_len; /* account for above copied frag */ | |
716 | for (i = 1; i < num_rcvd; i++) { | |
717 | index_inc(&rxq_idx, rxq->len); | |
718 | page_info = get_rx_page_info(adapter, rxq_idx); | |
719 | ||
720 | curr_frag_len = min(pktsize, rx_frag_size); | |
721 | ||
722 | skb_shinfo(skb)->frags[i].page = page_info->page; | |
723 | skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset; | |
724 | skb_shinfo(skb)->frags[i].size = curr_frag_len; | |
725 | skb->len += curr_frag_len; | |
726 | skb->data_len += curr_frag_len; | |
727 | skb_shinfo(skb)->nr_frags++; | |
728 | pktsize -= curr_frag_len; | |
729 | ||
730 | memset(page_info, 0, sizeof(*page_info)); | |
731 | } | |
732 | ||
76fbb429 | 733 | done: |
4097f663 | 734 | be_rx_stats_update(adapter, pktsize, num_rcvd); |
6b7c5b94 SP |
735 | return; |
736 | } | |
737 | ||
738 | /* Process the RX completion indicated by rxcp when LRO is disabled */ | |
739 | static void be_rx_compl_process(struct be_adapter *adapter, | |
740 | struct be_eth_rx_compl *rxcp) | |
741 | { | |
742 | struct sk_buff *skb; | |
743 | u32 vtp, vid; | |
6b7c5b94 | 744 | |
6b7c5b94 SP |
745 | vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); |
746 | ||
747 | skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN); | |
748 | if (!skb) { | |
749 | if (net_ratelimit()) | |
750 | dev_warn(&adapter->pdev->dev, "skb alloc failed\n"); | |
751 | be_rx_compl_discard(adapter, rxcp); | |
752 | return; | |
753 | } | |
754 | ||
755 | skb_reserve(skb, NET_IP_ALIGN); | |
756 | ||
757 | skb_fill_rx_data(adapter, skb, rxcp); | |
758 | ||
728a9972 | 759 | if (do_pkt_csum(rxcp, adapter->rx_csum)) |
6b7c5b94 | 760 | skb->ip_summed = CHECKSUM_NONE; |
728a9972 AK |
761 | else |
762 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
6b7c5b94 SP |
763 | |
764 | skb->truesize = skb->len + sizeof(struct sk_buff); | |
765 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
766 | skb->dev = adapter->netdev; | |
767 | ||
768 | if (vtp) { | |
769 | if (!adapter->vlan_grp || adapter->num_vlans == 0) { | |
770 | kfree_skb(skb); | |
771 | return; | |
772 | } | |
773 | vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp); | |
774 | vid = be16_to_cpu(vid); | |
775 | vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid); | |
776 | } else { | |
777 | netif_receive_skb(skb); | |
778 | } | |
779 | ||
780 | adapter->netdev->last_rx = jiffies; | |
781 | ||
782 | return; | |
783 | } | |
784 | ||
785 | /* Process the RX completion indicated by rxcp when LRO is enabled */ | |
786 | static void be_rx_compl_process_lro(struct be_adapter *adapter, | |
787 | struct be_eth_rx_compl *rxcp) | |
788 | { | |
789 | struct be_rx_page_info *page_info; | |
790 | struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME]; | |
791 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
792 | u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len; | |
793 | u16 i, rxq_idx = 0, vid; | |
794 | ||
795 | num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); | |
796 | pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp); | |
797 | vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); | |
798 | rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); | |
799 | ||
800 | remaining = pkt_size; | |
801 | for (i = 0; i < num_rcvd; i++) { | |
802 | page_info = get_rx_page_info(adapter, rxq_idx); | |
803 | ||
804 | curr_frag_len = min(remaining, rx_frag_size); | |
805 | ||
806 | rx_frags[i].page = page_info->page; | |
807 | rx_frags[i].page_offset = page_info->page_offset; | |
808 | rx_frags[i].size = curr_frag_len; | |
809 | remaining -= curr_frag_len; | |
810 | ||
811 | index_inc(&rxq_idx, rxq->len); | |
812 | ||
813 | memset(page_info, 0, sizeof(*page_info)); | |
814 | } | |
815 | ||
816 | if (likely(!vlanf)) { | |
817 | lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size, | |
818 | pkt_size, NULL, 0); | |
819 | } else { | |
820 | vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp); | |
821 | vid = be16_to_cpu(vid); | |
822 | ||
823 | if (!adapter->vlan_grp || adapter->num_vlans == 0) | |
824 | return; | |
825 | ||
826 | lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr, | |
827 | rx_frags, pkt_size, pkt_size, adapter->vlan_grp, | |
828 | vid, NULL, 0); | |
829 | } | |
830 | ||
4097f663 | 831 | be_rx_stats_update(adapter, pkt_size, num_rcvd); |
6b7c5b94 SP |
832 | return; |
833 | } | |
834 | ||
835 | static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter) | |
836 | { | |
837 | struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq); | |
838 | ||
839 | if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0) | |
840 | return NULL; | |
841 | ||
842 | be_dws_le_to_cpu(rxcp, sizeof(*rxcp)); | |
843 | ||
6b7c5b94 SP |
844 | queue_tail_inc(&adapter->rx_obj.cq); |
845 | return rxcp; | |
846 | } | |
847 | ||
a7a0ef31 SP |
848 | /* To reset the valid bit, we need to reset the whole word as |
849 | * when walking the queue the valid entries are little-endian | |
850 | * and invalid entries are host endian | |
851 | */ | |
852 | static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp) | |
853 | { | |
854 | rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0; | |
855 | } | |
856 | ||
6b7c5b94 SP |
857 | static inline struct page *be_alloc_pages(u32 size) |
858 | { | |
859 | gfp_t alloc_flags = GFP_ATOMIC; | |
860 | u32 order = get_order(size); | |
861 | if (order > 0) | |
862 | alloc_flags |= __GFP_COMP; | |
863 | return alloc_pages(alloc_flags, order); | |
864 | } | |
865 | ||
866 | /* | |
867 | * Allocate a page, split it to fragments of size rx_frag_size and post as | |
868 | * receive buffers to BE | |
869 | */ | |
870 | static void be_post_rx_frags(struct be_adapter *adapter) | |
871 | { | |
872 | struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl; | |
873 | struct be_rx_page_info *page_info = NULL; | |
874 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
875 | struct page *pagep = NULL; | |
876 | struct be_eth_rx_d *rxd; | |
877 | u64 page_dmaaddr = 0, frag_dmaaddr; | |
878 | u32 posted, page_offset = 0; | |
879 | ||
6b7c5b94 SP |
880 | page_info = &page_info_tbl[rxq->head]; |
881 | for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) { | |
882 | if (!pagep) { | |
883 | pagep = be_alloc_pages(adapter->big_page_size); | |
884 | if (unlikely(!pagep)) { | |
885 | drvr_stats(adapter)->be_ethrx_post_fail++; | |
886 | break; | |
887 | } | |
888 | page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0, | |
889 | adapter->big_page_size, | |
890 | PCI_DMA_FROMDEVICE); | |
891 | page_info->page_offset = 0; | |
892 | } else { | |
893 | get_page(pagep); | |
894 | page_info->page_offset = page_offset + rx_frag_size; | |
895 | } | |
896 | page_offset = page_info->page_offset; | |
897 | page_info->page = pagep; | |
898 | pci_unmap_addr_set(page_info, bus, page_dmaaddr); | |
899 | frag_dmaaddr = page_dmaaddr + page_info->page_offset; | |
900 | ||
901 | rxd = queue_head_node(rxq); | |
902 | rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF); | |
903 | rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr)); | |
904 | queue_head_inc(rxq); | |
905 | ||
906 | /* Any space left in the current big page for another frag? */ | |
907 | if ((page_offset + rx_frag_size + rx_frag_size) > | |
908 | adapter->big_page_size) { | |
909 | pagep = NULL; | |
910 | page_info->last_page_user = true; | |
911 | } | |
912 | page_info = &page_info_tbl[rxq->head]; | |
913 | } | |
914 | if (pagep) | |
915 | page_info->last_page_user = true; | |
916 | ||
917 | if (posted) { | |
6b7c5b94 | 918 | atomic_add(posted, &rxq->used); |
ea1dae11 SP |
919 | be_rxq_notify(&adapter->ctrl, rxq->id, posted); |
920 | } else if (atomic_read(&rxq->used) == 0) { | |
921 | /* Let be_worker replenish when memory is available */ | |
922 | adapter->rx_post_starved = true; | |
6b7c5b94 SP |
923 | } |
924 | ||
925 | return; | |
926 | } | |
927 | ||
5fb379ee | 928 | static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq) |
6b7c5b94 | 929 | { |
6b7c5b94 SP |
930 | struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq); |
931 | ||
932 | if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0) | |
933 | return NULL; | |
934 | ||
935 | be_dws_le_to_cpu(txcp, sizeof(*txcp)); | |
936 | ||
937 | txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0; | |
938 | ||
939 | queue_tail_inc(tx_cq); | |
940 | return txcp; | |
941 | } | |
942 | ||
943 | static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index) | |
944 | { | |
945 | struct be_queue_info *txq = &adapter->tx_obj.q; | |
946 | struct be_eth_wrb *wrb; | |
947 | struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list; | |
948 | struct sk_buff *sent_skb; | |
949 | u64 busaddr; | |
950 | u16 cur_index, num_wrbs = 0; | |
951 | ||
952 | cur_index = txq->tail; | |
953 | sent_skb = sent_skbs[cur_index]; | |
954 | BUG_ON(!sent_skb); | |
955 | sent_skbs[cur_index] = NULL; | |
956 | ||
957 | do { | |
958 | cur_index = txq->tail; | |
959 | wrb = queue_tail_node(txq); | |
960 | be_dws_le_to_cpu(wrb, sizeof(*wrb)); | |
961 | busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo; | |
962 | if (busaddr != 0) { | |
963 | pci_unmap_single(adapter->pdev, busaddr, | |
964 | wrb->frag_len, PCI_DMA_TODEVICE); | |
965 | } | |
966 | num_wrbs++; | |
967 | queue_tail_inc(txq); | |
968 | } while (cur_index != last_index); | |
969 | ||
970 | atomic_sub(num_wrbs, &txq->used); | |
971 | ||
972 | kfree_skb(sent_skb); | |
973 | } | |
974 | ||
975 | static void be_rx_q_clean(struct be_adapter *adapter) | |
976 | { | |
977 | struct be_rx_page_info *page_info; | |
978 | struct be_queue_info *rxq = &adapter->rx_obj.q; | |
979 | struct be_queue_info *rx_cq = &adapter->rx_obj.cq; | |
980 | struct be_eth_rx_compl *rxcp; | |
981 | u16 tail; | |
982 | ||
983 | /* First cleanup pending rx completions */ | |
984 | while ((rxcp = be_rx_compl_get(adapter)) != NULL) { | |
985 | be_rx_compl_discard(adapter, rxcp); | |
a7a0ef31 | 986 | be_rx_compl_reset(rxcp); |
6b7c5b94 SP |
987 | be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1); |
988 | } | |
989 | ||
990 | /* Then free posted rx buffer that were not used */ | |
991 | tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len; | |
992 | for (; tail != rxq->head; index_inc(&tail, rxq->len)) { | |
993 | page_info = get_rx_page_info(adapter, tail); | |
994 | put_page(page_info->page); | |
995 | memset(page_info, 0, sizeof(*page_info)); | |
996 | } | |
997 | BUG_ON(atomic_read(&rxq->used)); | |
998 | } | |
999 | ||
1000 | static void be_tx_q_clean(struct be_adapter *adapter) | |
1001 | { | |
1002 | struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list; | |
1003 | struct sk_buff *sent_skb; | |
1004 | struct be_queue_info *txq = &adapter->tx_obj.q; | |
1005 | u16 last_index; | |
1006 | bool dummy_wrb; | |
1007 | ||
1008 | while (atomic_read(&txq->used)) { | |
1009 | sent_skb = sent_skbs[txq->tail]; | |
1010 | last_index = txq->tail; | |
1011 | index_adv(&last_index, | |
1012 | wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len); | |
1013 | be_tx_compl_process(adapter, last_index); | |
1014 | } | |
1015 | } | |
1016 | ||
5fb379ee SP |
1017 | static void be_mcc_queues_destroy(struct be_adapter *adapter) |
1018 | { | |
1019 | struct be_queue_info *q; | |
1020 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1021 | ||
1022 | q = &ctrl->mcc_obj.q; | |
1023 | if (q->created) | |
1024 | be_cmd_q_destroy(ctrl, q, QTYPE_MCCQ); | |
1025 | be_queue_free(adapter, q); | |
1026 | ||
1027 | q = &ctrl->mcc_obj.cq; | |
1028 | if (q->created) | |
1029 | be_cmd_q_destroy(ctrl, q, QTYPE_CQ); | |
1030 | be_queue_free(adapter, q); | |
1031 | } | |
1032 | ||
1033 | /* Must be called only after TX qs are created as MCC shares TX EQ */ | |
1034 | static int be_mcc_queues_create(struct be_adapter *adapter) | |
1035 | { | |
1036 | struct be_queue_info *q, *cq; | |
1037 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1038 | ||
1039 | /* Alloc MCC compl queue */ | |
1040 | cq = &ctrl->mcc_obj.cq; | |
1041 | if (be_queue_alloc(adapter, cq, MCC_CQ_LEN, | |
1042 | sizeof(struct be_mcc_cq_entry))) | |
1043 | goto err; | |
1044 | ||
1045 | /* Ask BE to create MCC compl queue; share TX's eq */ | |
1046 | if (be_cmd_cq_create(ctrl, cq, &adapter->tx_eq.q, false, true, 0)) | |
1047 | goto mcc_cq_free; | |
1048 | ||
1049 | /* Alloc MCC queue */ | |
1050 | q = &ctrl->mcc_obj.q; | |
1051 | if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb))) | |
1052 | goto mcc_cq_destroy; | |
1053 | ||
1054 | /* Ask BE to create MCC queue */ | |
1055 | if (be_cmd_mccq_create(ctrl, q, cq)) | |
1056 | goto mcc_q_free; | |
1057 | ||
1058 | return 0; | |
1059 | ||
1060 | mcc_q_free: | |
1061 | be_queue_free(adapter, q); | |
1062 | mcc_cq_destroy: | |
1063 | be_cmd_q_destroy(ctrl, cq, QTYPE_CQ); | |
1064 | mcc_cq_free: | |
1065 | be_queue_free(adapter, cq); | |
1066 | err: | |
1067 | return -1; | |
1068 | } | |
1069 | ||
6b7c5b94 SP |
1070 | static void be_tx_queues_destroy(struct be_adapter *adapter) |
1071 | { | |
1072 | struct be_queue_info *q; | |
1073 | ||
1074 | q = &adapter->tx_obj.q; | |
934037bc | 1075 | if (q->created) { |
6b7c5b94 | 1076 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ); |
934037bc SP |
1077 | |
1078 | /* No more tx completions can be rcvd now; clean up if there | |
1079 | * are any pending completions or pending tx requests */ | |
1080 | be_tx_q_clean(adapter); | |
1081 | } | |
6b7c5b94 SP |
1082 | be_queue_free(adapter, q); |
1083 | ||
1084 | q = &adapter->tx_obj.cq; | |
1085 | if (q->created) | |
1086 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ); | |
1087 | be_queue_free(adapter, q); | |
1088 | ||
6b7c5b94 SP |
1089 | q = &adapter->tx_eq.q; |
1090 | if (q->created) | |
1091 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ); | |
1092 | be_queue_free(adapter, q); | |
1093 | } | |
1094 | ||
1095 | static int be_tx_queues_create(struct be_adapter *adapter) | |
1096 | { | |
1097 | struct be_queue_info *eq, *q, *cq; | |
1098 | ||
1099 | adapter->tx_eq.max_eqd = 0; | |
1100 | adapter->tx_eq.min_eqd = 0; | |
1101 | adapter->tx_eq.cur_eqd = 96; | |
1102 | adapter->tx_eq.enable_aic = false; | |
1103 | /* Alloc Tx Event queue */ | |
1104 | eq = &adapter->tx_eq.q; | |
1105 | if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry))) | |
1106 | return -1; | |
1107 | ||
1108 | /* Ask BE to create Tx Event queue */ | |
1109 | if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd)) | |
1110 | goto tx_eq_free; | |
1111 | /* Alloc TX eth compl queue */ | |
1112 | cq = &adapter->tx_obj.cq; | |
1113 | if (be_queue_alloc(adapter, cq, TX_CQ_LEN, | |
1114 | sizeof(struct be_eth_tx_compl))) | |
1115 | goto tx_eq_destroy; | |
1116 | ||
1117 | /* Ask BE to create Tx eth compl queue */ | |
1118 | if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3)) | |
1119 | goto tx_cq_free; | |
1120 | ||
1121 | /* Alloc TX eth queue */ | |
1122 | q = &adapter->tx_obj.q; | |
1123 | if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb))) | |
1124 | goto tx_cq_destroy; | |
1125 | ||
1126 | /* Ask BE to create Tx eth queue */ | |
1127 | if (be_cmd_txq_create(&adapter->ctrl, q, cq)) | |
1128 | goto tx_q_free; | |
1129 | return 0; | |
1130 | ||
1131 | tx_q_free: | |
1132 | be_queue_free(adapter, q); | |
1133 | tx_cq_destroy: | |
1134 | be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ); | |
1135 | tx_cq_free: | |
1136 | be_queue_free(adapter, cq); | |
1137 | tx_eq_destroy: | |
1138 | be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ); | |
1139 | tx_eq_free: | |
1140 | be_queue_free(adapter, eq); | |
1141 | return -1; | |
1142 | } | |
1143 | ||
1144 | static void be_rx_queues_destroy(struct be_adapter *adapter) | |
1145 | { | |
1146 | struct be_queue_info *q; | |
1147 | ||
1148 | q = &adapter->rx_obj.q; | |
1149 | if (q->created) { | |
1150 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ); | |
1151 | be_rx_q_clean(adapter); | |
1152 | } | |
1153 | be_queue_free(adapter, q); | |
1154 | ||
1155 | q = &adapter->rx_obj.cq; | |
1156 | if (q->created) | |
1157 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ); | |
1158 | be_queue_free(adapter, q); | |
1159 | ||
1160 | q = &adapter->rx_eq.q; | |
1161 | if (q->created) | |
1162 | be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ); | |
1163 | be_queue_free(adapter, q); | |
1164 | } | |
1165 | ||
1166 | static int be_rx_queues_create(struct be_adapter *adapter) | |
1167 | { | |
1168 | struct be_queue_info *eq, *q, *cq; | |
1169 | int rc; | |
1170 | ||
1171 | adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME; | |
1172 | adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE; | |
1173 | adapter->rx_eq.max_eqd = BE_MAX_EQD; | |
1174 | adapter->rx_eq.min_eqd = 0; | |
1175 | adapter->rx_eq.cur_eqd = 0; | |
1176 | adapter->rx_eq.enable_aic = true; | |
1177 | ||
1178 | /* Alloc Rx Event queue */ | |
1179 | eq = &adapter->rx_eq.q; | |
1180 | rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN, | |
1181 | sizeof(struct be_eq_entry)); | |
1182 | if (rc) | |
1183 | return rc; | |
1184 | ||
1185 | /* Ask BE to create Rx Event queue */ | |
1186 | rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd); | |
1187 | if (rc) | |
1188 | goto rx_eq_free; | |
1189 | ||
1190 | /* Alloc RX eth compl queue */ | |
1191 | cq = &adapter->rx_obj.cq; | |
1192 | rc = be_queue_alloc(adapter, cq, RX_CQ_LEN, | |
1193 | sizeof(struct be_eth_rx_compl)); | |
1194 | if (rc) | |
1195 | goto rx_eq_destroy; | |
1196 | ||
1197 | /* Ask BE to create Rx eth compl queue */ | |
1198 | rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3); | |
1199 | if (rc) | |
1200 | goto rx_cq_free; | |
1201 | ||
1202 | /* Alloc RX eth queue */ | |
1203 | q = &adapter->rx_obj.q; | |
1204 | rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d)); | |
1205 | if (rc) | |
1206 | goto rx_cq_destroy; | |
1207 | ||
1208 | /* Ask BE to create Rx eth queue */ | |
1209 | rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size, | |
1210 | BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false); | |
1211 | if (rc) | |
1212 | goto rx_q_free; | |
1213 | ||
1214 | return 0; | |
1215 | rx_q_free: | |
1216 | be_queue_free(adapter, q); | |
1217 | rx_cq_destroy: | |
1218 | be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ); | |
1219 | rx_cq_free: | |
1220 | be_queue_free(adapter, cq); | |
1221 | rx_eq_destroy: | |
1222 | be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ); | |
1223 | rx_eq_free: | |
1224 | be_queue_free(adapter, eq); | |
1225 | return rc; | |
1226 | } | |
1227 | static bool event_get(struct be_eq_obj *eq_obj, u16 *rid) | |
1228 | { | |
1229 | struct be_eq_entry *entry = queue_tail_node(&eq_obj->q); | |
1230 | u32 evt = entry->evt; | |
1231 | ||
1232 | if (!evt) | |
1233 | return false; | |
1234 | ||
1235 | evt = le32_to_cpu(evt); | |
1236 | *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK; | |
1237 | entry->evt = 0; | |
1238 | queue_tail_inc(&eq_obj->q); | |
1239 | return true; | |
1240 | } | |
1241 | ||
1242 | static int event_handle(struct be_ctrl_info *ctrl, | |
1243 | struct be_eq_obj *eq_obj) | |
1244 | { | |
1245 | u16 rid = 0, num = 0; | |
1246 | ||
1247 | while (event_get(eq_obj, &rid)) | |
1248 | num++; | |
1249 | ||
1250 | /* We can see an interrupt and no event */ | |
1251 | be_eq_notify(ctrl, eq_obj->q.id, true, true, num); | |
1252 | if (num) | |
1253 | napi_schedule(&eq_obj->napi); | |
1254 | ||
1255 | return num; | |
1256 | } | |
1257 | ||
1258 | static irqreturn_t be_intx(int irq, void *dev) | |
1259 | { | |
1260 | struct be_adapter *adapter = dev; | |
1261 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1262 | int rx, tx; | |
1263 | ||
1264 | tx = event_handle(ctrl, &adapter->tx_eq); | |
1265 | rx = event_handle(ctrl, &adapter->rx_eq); | |
1266 | ||
1267 | if (rx || tx) | |
1268 | return IRQ_HANDLED; | |
1269 | else | |
1270 | return IRQ_NONE; | |
1271 | } | |
1272 | ||
1273 | static irqreturn_t be_msix_rx(int irq, void *dev) | |
1274 | { | |
1275 | struct be_adapter *adapter = dev; | |
1276 | ||
1277 | event_handle(&adapter->ctrl, &adapter->rx_eq); | |
1278 | ||
1279 | return IRQ_HANDLED; | |
1280 | } | |
1281 | ||
5fb379ee | 1282 | static irqreturn_t be_msix_tx_mcc(int irq, void *dev) |
6b7c5b94 SP |
1283 | { |
1284 | struct be_adapter *adapter = dev; | |
1285 | ||
1286 | event_handle(&adapter->ctrl, &adapter->tx_eq); | |
1287 | ||
1288 | return IRQ_HANDLED; | |
1289 | } | |
1290 | ||
1291 | static inline bool do_lro(struct be_adapter *adapter, | |
1292 | struct be_eth_rx_compl *rxcp) | |
1293 | { | |
1294 | int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp); | |
1295 | int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp); | |
1296 | ||
1297 | if (err) | |
1298 | drvr_stats(adapter)->be_rxcp_err++; | |
1299 | ||
1300 | return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ? | |
1301 | false : true; | |
1302 | } | |
1303 | ||
1304 | int be_poll_rx(struct napi_struct *napi, int budget) | |
1305 | { | |
1306 | struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi); | |
1307 | struct be_adapter *adapter = | |
1308 | container_of(rx_eq, struct be_adapter, rx_eq); | |
1309 | struct be_queue_info *rx_cq = &adapter->rx_obj.cq; | |
1310 | struct be_eth_rx_compl *rxcp; | |
1311 | u32 work_done; | |
1312 | ||
1313 | for (work_done = 0; work_done < budget; work_done++) { | |
1314 | rxcp = be_rx_compl_get(adapter); | |
1315 | if (!rxcp) | |
1316 | break; | |
1317 | ||
1318 | if (do_lro(adapter, rxcp)) | |
1319 | be_rx_compl_process_lro(adapter, rxcp); | |
1320 | else | |
1321 | be_rx_compl_process(adapter, rxcp); | |
a7a0ef31 SP |
1322 | |
1323 | be_rx_compl_reset(rxcp); | |
6b7c5b94 SP |
1324 | } |
1325 | ||
1326 | lro_flush_all(&adapter->rx_obj.lro_mgr); | |
1327 | ||
1328 | /* Refill the queue */ | |
1329 | if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM) | |
1330 | be_post_rx_frags(adapter); | |
1331 | ||
1332 | /* All consumed */ | |
1333 | if (work_done < budget) { | |
1334 | napi_complete(napi); | |
1335 | be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done); | |
1336 | } else { | |
1337 | /* More to be consumed; continue with interrupts disabled */ | |
1338 | be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done); | |
1339 | } | |
1340 | return work_done; | |
1341 | } | |
1342 | ||
5fb379ee | 1343 | void be_process_tx(struct be_adapter *adapter) |
6b7c5b94 | 1344 | { |
5fb379ee SP |
1345 | struct be_queue_info *txq = &adapter->tx_obj.q; |
1346 | struct be_queue_info *tx_cq = &adapter->tx_obj.cq; | |
6b7c5b94 SP |
1347 | struct be_eth_tx_compl *txcp; |
1348 | u32 num_cmpl = 0; | |
1349 | u16 end_idx; | |
1350 | ||
5fb379ee | 1351 | while ((txcp = be_tx_compl_get(tx_cq))) { |
6b7c5b94 SP |
1352 | end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl, |
1353 | wrb_index, txcp); | |
1354 | be_tx_compl_process(adapter, end_idx); | |
1355 | num_cmpl++; | |
1356 | } | |
1357 | ||
5fb379ee SP |
1358 | if (num_cmpl) { |
1359 | be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl); | |
1360 | ||
1361 | /* As Tx wrbs have been freed up, wake up netdev queue if | |
1362 | * it was stopped due to lack of tx wrbs. | |
1363 | */ | |
1364 | if (netif_queue_stopped(adapter->netdev) && | |
6b7c5b94 | 1365 | atomic_read(&txq->used) < txq->len / 2) { |
5fb379ee SP |
1366 | netif_wake_queue(adapter->netdev); |
1367 | } | |
1368 | ||
1369 | drvr_stats(adapter)->be_tx_events++; | |
1370 | drvr_stats(adapter)->be_tx_compl += num_cmpl; | |
6b7c5b94 | 1371 | } |
5fb379ee SP |
1372 | } |
1373 | ||
1374 | /* As TX and MCC share the same EQ check for both TX and MCC completions. | |
1375 | * For TX/MCC we don't honour budget; consume everything | |
1376 | */ | |
1377 | static int be_poll_tx_mcc(struct napi_struct *napi, int budget) | |
1378 | { | |
1379 | struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi); | |
1380 | struct be_adapter *adapter = | |
1381 | container_of(tx_eq, struct be_adapter, tx_eq); | |
6b7c5b94 SP |
1382 | |
1383 | napi_complete(napi); | |
1384 | ||
5fb379ee | 1385 | be_process_tx(adapter); |
6b7c5b94 | 1386 | |
5fb379ee | 1387 | be_process_mcc(&adapter->ctrl); |
6b7c5b94 SP |
1388 | |
1389 | return 1; | |
1390 | } | |
1391 | ||
ea1dae11 SP |
1392 | static void be_worker(struct work_struct *work) |
1393 | { | |
1394 | struct be_adapter *adapter = | |
1395 | container_of(work, struct be_adapter, work.work); | |
1396 | int status; | |
1397 | ||
1398 | /* Check link */ | |
1399 | be_link_status_update(adapter); | |
1400 | ||
1401 | /* Get Stats */ | |
1402 | status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd); | |
1403 | if (!status) | |
1404 | netdev_stats_update(adapter); | |
1405 | ||
1406 | /* Set EQ delay */ | |
1407 | be_rx_eqd_update(adapter); | |
1408 | ||
4097f663 SP |
1409 | be_tx_rate_update(adapter); |
1410 | be_rx_rate_update(adapter); | |
1411 | ||
ea1dae11 SP |
1412 | if (adapter->rx_post_starved) { |
1413 | adapter->rx_post_starved = false; | |
1414 | be_post_rx_frags(adapter); | |
1415 | } | |
1416 | ||
1417 | schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000)); | |
1418 | } | |
1419 | ||
6b7c5b94 SP |
1420 | static void be_msix_enable(struct be_adapter *adapter) |
1421 | { | |
1422 | int i, status; | |
1423 | ||
1424 | for (i = 0; i < BE_NUM_MSIX_VECTORS; i++) | |
1425 | adapter->msix_entries[i].entry = i; | |
1426 | ||
1427 | status = pci_enable_msix(adapter->pdev, adapter->msix_entries, | |
1428 | BE_NUM_MSIX_VECTORS); | |
1429 | if (status == 0) | |
1430 | adapter->msix_enabled = true; | |
1431 | return; | |
1432 | } | |
1433 | ||
1434 | static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id) | |
1435 | { | |
1436 | return adapter->msix_entries[eq_id - | |
1437 | 8 * adapter->ctrl.pci_func].vector; | |
1438 | } | |
1439 | ||
1440 | static int be_msix_register(struct be_adapter *adapter) | |
1441 | { | |
1442 | struct net_device *netdev = adapter->netdev; | |
1443 | struct be_eq_obj *tx_eq = &adapter->tx_eq; | |
1444 | struct be_eq_obj *rx_eq = &adapter->rx_eq; | |
1445 | int status, vec; | |
1446 | ||
1447 | sprintf(tx_eq->desc, "%s-tx", netdev->name); | |
1448 | vec = be_msix_vec_get(adapter, tx_eq->q.id); | |
5fb379ee | 1449 | status = request_irq(vec, be_msix_tx_mcc, 0, tx_eq->desc, adapter); |
6b7c5b94 SP |
1450 | if (status) |
1451 | goto err; | |
1452 | ||
1453 | sprintf(rx_eq->desc, "%s-rx", netdev->name); | |
1454 | vec = be_msix_vec_get(adapter, rx_eq->q.id); | |
1455 | status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter); | |
1456 | if (status) { /* Free TX IRQ */ | |
1457 | vec = be_msix_vec_get(adapter, tx_eq->q.id); | |
1458 | free_irq(vec, adapter); | |
1459 | goto err; | |
1460 | } | |
1461 | return 0; | |
1462 | err: | |
1463 | dev_warn(&adapter->pdev->dev, | |
1464 | "MSIX Request IRQ failed - err %d\n", status); | |
1465 | pci_disable_msix(adapter->pdev); | |
1466 | adapter->msix_enabled = false; | |
1467 | return status; | |
1468 | } | |
1469 | ||
1470 | static int be_irq_register(struct be_adapter *adapter) | |
1471 | { | |
1472 | struct net_device *netdev = adapter->netdev; | |
1473 | int status; | |
1474 | ||
1475 | if (adapter->msix_enabled) { | |
1476 | status = be_msix_register(adapter); | |
1477 | if (status == 0) | |
1478 | goto done; | |
1479 | } | |
1480 | ||
1481 | /* INTx */ | |
1482 | netdev->irq = adapter->pdev->irq; | |
1483 | status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name, | |
1484 | adapter); | |
1485 | if (status) { | |
1486 | dev_err(&adapter->pdev->dev, | |
1487 | "INTx request IRQ failed - err %d\n", status); | |
1488 | return status; | |
1489 | } | |
1490 | done: | |
1491 | adapter->isr_registered = true; | |
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | static void be_irq_unregister(struct be_adapter *adapter) | |
1496 | { | |
1497 | struct net_device *netdev = adapter->netdev; | |
1498 | int vec; | |
1499 | ||
1500 | if (!adapter->isr_registered) | |
1501 | return; | |
1502 | ||
1503 | /* INTx */ | |
1504 | if (!adapter->msix_enabled) { | |
1505 | free_irq(netdev->irq, adapter); | |
1506 | goto done; | |
1507 | } | |
1508 | ||
1509 | /* MSIx */ | |
1510 | vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id); | |
1511 | free_irq(vec, adapter); | |
1512 | vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id); | |
1513 | free_irq(vec, adapter); | |
1514 | done: | |
1515 | adapter->isr_registered = false; | |
1516 | return; | |
1517 | } | |
1518 | ||
1519 | static int be_open(struct net_device *netdev) | |
1520 | { | |
1521 | struct be_adapter *adapter = netdev_priv(netdev); | |
1522 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1523 | struct be_eq_obj *rx_eq = &adapter->rx_eq; | |
1524 | struct be_eq_obj *tx_eq = &adapter->tx_eq; | |
5fb379ee SP |
1525 | |
1526 | /* First time posting */ | |
1527 | be_post_rx_frags(adapter); | |
1528 | ||
1529 | napi_enable(&rx_eq->napi); | |
1530 | napi_enable(&tx_eq->napi); | |
1531 | ||
1532 | be_irq_register(adapter); | |
1533 | ||
1534 | be_intr_set(ctrl, true); | |
1535 | ||
1536 | /* The evt queues are created in unarmed state; arm them */ | |
1537 | be_eq_notify(ctrl, rx_eq->q.id, true, false, 0); | |
1538 | be_eq_notify(ctrl, tx_eq->q.id, true, false, 0); | |
1539 | ||
1540 | /* Rx compl queue may be in unarmed state; rearm it */ | |
1541 | be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0); | |
1542 | ||
1543 | be_link_status_update(adapter); | |
1544 | ||
1545 | schedule_delayed_work(&adapter->work, msecs_to_jiffies(100)); | |
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | static int be_setup(struct be_adapter *adapter) | |
1550 | { | |
1551 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1552 | struct net_device *netdev = adapter->netdev; | |
6b7c5b94 SP |
1553 | u32 if_flags; |
1554 | int status; | |
1555 | ||
1556 | if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS | | |
1557 | BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED | | |
1558 | BE_IF_FLAGS_PASS_L3L4_ERRORS; | |
1559 | status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr, | |
1560 | false/* pmac_invalid */, &adapter->if_handle, | |
1561 | &adapter->pmac_id); | |
1562 | if (status != 0) | |
1563 | goto do_none; | |
1564 | ||
1ab1ab75 SP |
1565 | be_vid_config(netdev); |
1566 | ||
6b7c5b94 SP |
1567 | status = be_cmd_set_flow_control(ctrl, true, true); |
1568 | if (status != 0) | |
1569 | goto if_destroy; | |
1570 | ||
1571 | status = be_tx_queues_create(adapter); | |
1572 | if (status != 0) | |
1573 | goto if_destroy; | |
1574 | ||
1575 | status = be_rx_queues_create(adapter); | |
1576 | if (status != 0) | |
1577 | goto tx_qs_destroy; | |
1578 | ||
5fb379ee SP |
1579 | status = be_mcc_queues_create(adapter); |
1580 | if (status != 0) | |
1581 | goto rx_qs_destroy; | |
6b7c5b94 | 1582 | |
6b7c5b94 SP |
1583 | return 0; |
1584 | ||
5fb379ee SP |
1585 | rx_qs_destroy: |
1586 | be_rx_queues_destroy(adapter); | |
6b7c5b94 SP |
1587 | tx_qs_destroy: |
1588 | be_tx_queues_destroy(adapter); | |
1589 | if_destroy: | |
1590 | be_cmd_if_destroy(ctrl, adapter->if_handle); | |
1591 | do_none: | |
1592 | return status; | |
1593 | } | |
1594 | ||
5fb379ee SP |
1595 | static int be_clear(struct be_adapter *adapter) |
1596 | { | |
1597 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1598 | ||
1599 | be_rx_queues_destroy(adapter); | |
1600 | be_tx_queues_destroy(adapter); | |
1601 | ||
1602 | be_cmd_if_destroy(ctrl, adapter->if_handle); | |
1603 | ||
1604 | be_mcc_queues_destroy(adapter); | |
1605 | return 0; | |
1606 | } | |
1607 | ||
6b7c5b94 SP |
1608 | static int be_close(struct net_device *netdev) |
1609 | { | |
1610 | struct be_adapter *adapter = netdev_priv(netdev); | |
1611 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1612 | struct be_eq_obj *rx_eq = &adapter->rx_eq; | |
1613 | struct be_eq_obj *tx_eq = &adapter->tx_eq; | |
1614 | int vec; | |
1615 | ||
b305be78 | 1616 | cancel_delayed_work_sync(&adapter->work); |
6b7c5b94 SP |
1617 | |
1618 | netif_stop_queue(netdev); | |
1619 | netif_carrier_off(netdev); | |
1620 | adapter->link.speed = PHY_LINK_SPEED_ZERO; | |
1621 | ||
1622 | be_intr_set(ctrl, false); | |
1623 | ||
1624 | if (adapter->msix_enabled) { | |
1625 | vec = be_msix_vec_get(adapter, tx_eq->q.id); | |
1626 | synchronize_irq(vec); | |
1627 | vec = be_msix_vec_get(adapter, rx_eq->q.id); | |
1628 | synchronize_irq(vec); | |
1629 | } else { | |
1630 | synchronize_irq(netdev->irq); | |
1631 | } | |
1632 | be_irq_unregister(adapter); | |
1633 | ||
1634 | napi_disable(&rx_eq->napi); | |
1635 | napi_disable(&tx_eq->napi); | |
1636 | ||
6b7c5b94 SP |
1637 | return 0; |
1638 | } | |
1639 | ||
1640 | static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, | |
1641 | void **ip_hdr, void **tcpudp_hdr, | |
1642 | u64 *hdr_flags, void *priv) | |
1643 | { | |
1644 | struct ethhdr *eh; | |
1645 | struct vlan_ethhdr *veh; | |
1646 | struct iphdr *iph; | |
1647 | u8 *va = page_address(frag->page) + frag->page_offset; | |
1648 | unsigned long ll_hlen; | |
1649 | ||
1650 | prefetch(va); | |
1651 | eh = (struct ethhdr *)va; | |
1652 | *mac_hdr = eh; | |
1653 | ll_hlen = ETH_HLEN; | |
1654 | if (eh->h_proto != htons(ETH_P_IP)) { | |
1655 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
1656 | veh = (struct vlan_ethhdr *)va; | |
1657 | if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP)) | |
1658 | return -1; | |
1659 | ||
1660 | ll_hlen += VLAN_HLEN; | |
1661 | } else { | |
1662 | return -1; | |
1663 | } | |
1664 | } | |
1665 | *hdr_flags = LRO_IPV4; | |
1666 | iph = (struct iphdr *)(va + ll_hlen); | |
1667 | *ip_hdr = iph; | |
1668 | if (iph->protocol != IPPROTO_TCP) | |
1669 | return -1; | |
1670 | *hdr_flags |= LRO_TCP; | |
1671 | *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2); | |
1672 | ||
1673 | return 0; | |
1674 | } | |
1675 | ||
1676 | static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev) | |
1677 | { | |
1678 | struct net_lro_mgr *lro_mgr; | |
1679 | ||
1680 | lro_mgr = &adapter->rx_obj.lro_mgr; | |
1681 | lro_mgr->dev = netdev; | |
1682 | lro_mgr->features = LRO_F_NAPI; | |
1683 | lro_mgr->ip_summed = CHECKSUM_UNNECESSARY; | |
1684 | lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY; | |
1685 | lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS; | |
1686 | lro_mgr->lro_arr = adapter->rx_obj.lro_desc; | |
1687 | lro_mgr->get_frag_header = be_get_frag_header; | |
1688 | lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME; | |
1689 | } | |
1690 | ||
1691 | static struct net_device_ops be_netdev_ops = { | |
1692 | .ndo_open = be_open, | |
1693 | .ndo_stop = be_close, | |
1694 | .ndo_start_xmit = be_xmit, | |
1695 | .ndo_get_stats = be_get_stats, | |
1696 | .ndo_set_rx_mode = be_set_multicast_list, | |
1697 | .ndo_set_mac_address = be_mac_addr_set, | |
1698 | .ndo_change_mtu = be_change_mtu, | |
1699 | .ndo_validate_addr = eth_validate_addr, | |
1700 | .ndo_vlan_rx_register = be_vlan_register, | |
1701 | .ndo_vlan_rx_add_vid = be_vlan_add_vid, | |
1702 | .ndo_vlan_rx_kill_vid = be_vlan_rem_vid, | |
1703 | }; | |
1704 | ||
1705 | static void be_netdev_init(struct net_device *netdev) | |
1706 | { | |
1707 | struct be_adapter *adapter = netdev_priv(netdev); | |
1708 | ||
1709 | netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO | | |
1710 | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM | | |
728a9972 | 1711 | NETIF_F_IPV6_CSUM; |
6b7c5b94 SP |
1712 | |
1713 | netdev->flags |= IFF_MULTICAST; | |
1714 | ||
728a9972 AK |
1715 | adapter->rx_csum = true; |
1716 | ||
6b7c5b94 SP |
1717 | BE_SET_NETDEV_OPS(netdev, &be_netdev_ops); |
1718 | ||
1719 | SET_ETHTOOL_OPS(netdev, &be_ethtool_ops); | |
1720 | ||
1721 | be_lro_init(adapter, netdev); | |
1722 | ||
1723 | netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx, | |
1724 | BE_NAPI_WEIGHT); | |
5fb379ee | 1725 | netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc, |
6b7c5b94 SP |
1726 | BE_NAPI_WEIGHT); |
1727 | ||
1728 | netif_carrier_off(netdev); | |
1729 | netif_stop_queue(netdev); | |
1730 | } | |
1731 | ||
1732 | static void be_unmap_pci_bars(struct be_adapter *adapter) | |
1733 | { | |
1734 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1735 | if (ctrl->csr) | |
1736 | iounmap(ctrl->csr); | |
1737 | if (ctrl->db) | |
1738 | iounmap(ctrl->db); | |
1739 | if (ctrl->pcicfg) | |
1740 | iounmap(ctrl->pcicfg); | |
1741 | } | |
1742 | ||
1743 | static int be_map_pci_bars(struct be_adapter *adapter) | |
1744 | { | |
1745 | u8 __iomem *addr; | |
1746 | ||
1747 | addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2), | |
1748 | pci_resource_len(adapter->pdev, 2)); | |
1749 | if (addr == NULL) | |
1750 | return -ENOMEM; | |
1751 | adapter->ctrl.csr = addr; | |
1752 | ||
1753 | addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4), | |
1754 | 128 * 1024); | |
1755 | if (addr == NULL) | |
1756 | goto pci_map_err; | |
1757 | adapter->ctrl.db = addr; | |
1758 | ||
1759 | addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1), | |
1760 | pci_resource_len(adapter->pdev, 1)); | |
1761 | if (addr == NULL) | |
1762 | goto pci_map_err; | |
1763 | adapter->ctrl.pcicfg = addr; | |
1764 | ||
1765 | return 0; | |
1766 | pci_map_err: | |
1767 | be_unmap_pci_bars(adapter); | |
1768 | return -ENOMEM; | |
1769 | } | |
1770 | ||
1771 | ||
1772 | static void be_ctrl_cleanup(struct be_adapter *adapter) | |
1773 | { | |
1774 | struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced; | |
1775 | ||
1776 | be_unmap_pci_bars(adapter); | |
1777 | ||
1778 | if (mem->va) | |
1779 | pci_free_consistent(adapter->pdev, mem->size, | |
1780 | mem->va, mem->dma); | |
1781 | } | |
1782 | ||
1783 | /* Initialize the mbox required to send cmds to BE */ | |
1784 | static int be_ctrl_init(struct be_adapter *adapter) | |
1785 | { | |
1786 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1787 | struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced; | |
1788 | struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem; | |
1789 | int status; | |
1790 | u32 val; | |
1791 | ||
1792 | status = be_map_pci_bars(adapter); | |
1793 | if (status) | |
1794 | return status; | |
1795 | ||
1796 | mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16; | |
1797 | mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev, | |
1798 | mbox_mem_alloc->size, &mbox_mem_alloc->dma); | |
1799 | if (!mbox_mem_alloc->va) { | |
1800 | be_unmap_pci_bars(adapter); | |
1801 | return -1; | |
1802 | } | |
1803 | mbox_mem_align->size = sizeof(struct be_mcc_mailbox); | |
1804 | mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16); | |
1805 | mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16); | |
1806 | memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox)); | |
5fb379ee SP |
1807 | spin_lock_init(&ctrl->mbox_lock); |
1808 | spin_lock_init(&ctrl->mcc_lock); | |
1809 | spin_lock_init(&ctrl->mcc_cq_lock); | |
6b7c5b94 SP |
1810 | |
1811 | val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET); | |
1812 | ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) & | |
1813 | MEMBAR_CTRL_INT_CTRL_PFUNC_MASK; | |
1814 | return 0; | |
1815 | } | |
1816 | ||
1817 | static void be_stats_cleanup(struct be_adapter *adapter) | |
1818 | { | |
1819 | struct be_stats_obj *stats = &adapter->stats; | |
1820 | struct be_dma_mem *cmd = &stats->cmd; | |
1821 | ||
1822 | if (cmd->va) | |
1823 | pci_free_consistent(adapter->pdev, cmd->size, | |
1824 | cmd->va, cmd->dma); | |
1825 | } | |
1826 | ||
1827 | static int be_stats_init(struct be_adapter *adapter) | |
1828 | { | |
1829 | struct be_stats_obj *stats = &adapter->stats; | |
1830 | struct be_dma_mem *cmd = &stats->cmd; | |
1831 | ||
1832 | cmd->size = sizeof(struct be_cmd_req_get_stats); | |
1833 | cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma); | |
1834 | if (cmd->va == NULL) | |
1835 | return -1; | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | static void __devexit be_remove(struct pci_dev *pdev) | |
1840 | { | |
1841 | struct be_adapter *adapter = pci_get_drvdata(pdev); | |
1842 | if (!adapter) | |
1843 | return; | |
1844 | ||
1845 | unregister_netdev(adapter->netdev); | |
1846 | ||
5fb379ee SP |
1847 | be_clear(adapter); |
1848 | ||
6b7c5b94 SP |
1849 | be_stats_cleanup(adapter); |
1850 | ||
1851 | be_ctrl_cleanup(adapter); | |
1852 | ||
1853 | if (adapter->msix_enabled) { | |
1854 | pci_disable_msix(adapter->pdev); | |
1855 | adapter->msix_enabled = false; | |
1856 | } | |
1857 | ||
1858 | pci_set_drvdata(pdev, NULL); | |
1859 | pci_release_regions(pdev); | |
1860 | pci_disable_device(pdev); | |
1861 | ||
1862 | free_netdev(adapter->netdev); | |
1863 | } | |
1864 | ||
1865 | static int be_hw_up(struct be_adapter *adapter) | |
1866 | { | |
1867 | struct be_ctrl_info *ctrl = &adapter->ctrl; | |
1868 | int status; | |
1869 | ||
1870 | status = be_cmd_POST(ctrl); | |
1871 | if (status) | |
1872 | return status; | |
1873 | ||
1874 | status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver); | |
1875 | if (status) | |
1876 | return status; | |
1877 | ||
1878 | status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num); | |
1879 | return status; | |
1880 | } | |
1881 | ||
1882 | static int __devinit be_probe(struct pci_dev *pdev, | |
1883 | const struct pci_device_id *pdev_id) | |
1884 | { | |
1885 | int status = 0; | |
1886 | struct be_adapter *adapter; | |
1887 | struct net_device *netdev; | |
1888 | struct be_ctrl_info *ctrl; | |
1889 | u8 mac[ETH_ALEN]; | |
1890 | ||
1891 | status = pci_enable_device(pdev); | |
1892 | if (status) | |
1893 | goto do_none; | |
1894 | ||
1895 | status = pci_request_regions(pdev, DRV_NAME); | |
1896 | if (status) | |
1897 | goto disable_dev; | |
1898 | pci_set_master(pdev); | |
1899 | ||
1900 | netdev = alloc_etherdev(sizeof(struct be_adapter)); | |
1901 | if (netdev == NULL) { | |
1902 | status = -ENOMEM; | |
1903 | goto rel_reg; | |
1904 | } | |
1905 | adapter = netdev_priv(netdev); | |
1906 | adapter->pdev = pdev; | |
1907 | pci_set_drvdata(pdev, adapter); | |
1908 | adapter->netdev = netdev; | |
1909 | ||
1910 | be_msix_enable(adapter); | |
1911 | ||
e930438c | 1912 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
6b7c5b94 SP |
1913 | if (!status) { |
1914 | netdev->features |= NETIF_F_HIGHDMA; | |
1915 | } else { | |
e930438c | 1916 | status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
6b7c5b94 SP |
1917 | if (status) { |
1918 | dev_err(&pdev->dev, "Could not set PCI DMA Mask\n"); | |
1919 | goto free_netdev; | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | ctrl = &adapter->ctrl; | |
1924 | status = be_ctrl_init(adapter); | |
1925 | if (status) | |
1926 | goto free_netdev; | |
1927 | ||
1928 | status = be_stats_init(adapter); | |
1929 | if (status) | |
1930 | goto ctrl_clean; | |
1931 | ||
1932 | status = be_hw_up(adapter); | |
1933 | if (status) | |
1934 | goto stats_clean; | |
1935 | ||
1936 | status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK, | |
1937 | true /* permanent */, 0); | |
1938 | if (status) | |
1939 | goto stats_clean; | |
1940 | memcpy(netdev->dev_addr, mac, ETH_ALEN); | |
1941 | ||
1942 | INIT_DELAYED_WORK(&adapter->work, be_worker); | |
1943 | be_netdev_init(netdev); | |
1944 | SET_NETDEV_DEV(netdev, &adapter->pdev->dev); | |
1945 | ||
5fb379ee SP |
1946 | status = be_setup(adapter); |
1947 | if (status) | |
1948 | goto stats_clean; | |
6b7c5b94 SP |
1949 | status = register_netdev(netdev); |
1950 | if (status != 0) | |
5fb379ee | 1951 | goto unsetup; |
6b7c5b94 | 1952 | |
c4ca2374 | 1953 | dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num); |
6b7c5b94 SP |
1954 | return 0; |
1955 | ||
5fb379ee SP |
1956 | unsetup: |
1957 | be_clear(adapter); | |
6b7c5b94 SP |
1958 | stats_clean: |
1959 | be_stats_cleanup(adapter); | |
1960 | ctrl_clean: | |
1961 | be_ctrl_cleanup(adapter); | |
1962 | free_netdev: | |
1963 | free_netdev(adapter->netdev); | |
1964 | rel_reg: | |
1965 | pci_release_regions(pdev); | |
1966 | disable_dev: | |
1967 | pci_disable_device(pdev); | |
1968 | do_none: | |
c4ca2374 | 1969 | dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev)); |
6b7c5b94 SP |
1970 | return status; |
1971 | } | |
1972 | ||
1973 | static int be_suspend(struct pci_dev *pdev, pm_message_t state) | |
1974 | { | |
1975 | struct be_adapter *adapter = pci_get_drvdata(pdev); | |
1976 | struct net_device *netdev = adapter->netdev; | |
1977 | ||
1978 | netif_device_detach(netdev); | |
1979 | if (netif_running(netdev)) { | |
1980 | rtnl_lock(); | |
1981 | be_close(netdev); | |
5fb379ee | 1982 | be_clear(adapter); |
6b7c5b94 SP |
1983 | rtnl_unlock(); |
1984 | } | |
1985 | ||
1986 | pci_save_state(pdev); | |
1987 | pci_disable_device(pdev); | |
1988 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1989 | return 0; | |
1990 | } | |
1991 | ||
1992 | static int be_resume(struct pci_dev *pdev) | |
1993 | { | |
1994 | int status = 0; | |
1995 | struct be_adapter *adapter = pci_get_drvdata(pdev); | |
1996 | struct net_device *netdev = adapter->netdev; | |
1997 | ||
1998 | netif_device_detach(netdev); | |
1999 | ||
2000 | status = pci_enable_device(pdev); | |
2001 | if (status) | |
2002 | return status; | |
2003 | ||
2004 | pci_set_power_state(pdev, 0); | |
2005 | pci_restore_state(pdev); | |
2006 | ||
6b7c5b94 SP |
2007 | if (netif_running(netdev)) { |
2008 | rtnl_lock(); | |
5fb379ee | 2009 | be_setup(adapter); |
6b7c5b94 SP |
2010 | be_open(netdev); |
2011 | rtnl_unlock(); | |
2012 | } | |
2013 | netif_device_attach(netdev); | |
2014 | return 0; | |
2015 | } | |
2016 | ||
2017 | static struct pci_driver be_driver = { | |
2018 | .name = DRV_NAME, | |
2019 | .id_table = be_dev_ids, | |
2020 | .probe = be_probe, | |
2021 | .remove = be_remove, | |
2022 | .suspend = be_suspend, | |
2023 | .resume = be_resume | |
2024 | }; | |
2025 | ||
2026 | static int __init be_init_module(void) | |
2027 | { | |
2028 | if (rx_frag_size != 8192 && rx_frag_size != 4096 | |
2029 | && rx_frag_size != 2048) { | |
2030 | printk(KERN_WARNING DRV_NAME | |
2031 | " : Module param rx_frag_size must be 2048/4096/8192." | |
2032 | " Using 2048\n"); | |
2033 | rx_frag_size = 2048; | |
2034 | } | |
2035 | /* Ensure rx_frag_size is aligned to chache line */ | |
2036 | if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) { | |
2037 | printk(KERN_WARNING DRV_NAME | |
2038 | " : Bad module param rx_frag_size. Using 2048\n"); | |
2039 | rx_frag_size = 2048; | |
2040 | } | |
2041 | ||
2042 | return pci_register_driver(&be_driver); | |
2043 | } | |
2044 | module_init(be_init_module); | |
2045 | ||
2046 | static void __exit be_exit_module(void) | |
2047 | { | |
2048 | pci_unregister_driver(&be_driver); | |
2049 | } | |
2050 | module_exit(be_exit_module); |