]>
Commit | Line | Data |
---|---|---|
d4e0fe01 AD |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) 82576 Virtual Function Linux driver | |
4 | Copyright(c) 2009 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/vmalloc.h> | |
33 | #include <linux/pagemap.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/tcp.h> | |
37 | #include <linux/ipv6.h> | |
38 | #include <net/checksum.h> | |
39 | #include <net/ip6_checksum.h> | |
40 | #include <linux/mii.h> | |
41 | #include <linux/ethtool.h> | |
42 | #include <linux/if_vlan.h> | |
43 | #include <linux/pm_qos_params.h> | |
44 | ||
45 | #include "igbvf.h" | |
46 | ||
47 | #define DRV_VERSION "1.0.0-k0" | |
48 | char igbvf_driver_name[] = "igbvf"; | |
49 | const char igbvf_driver_version[] = DRV_VERSION; | |
50 | static const char igbvf_driver_string[] = | |
51 | "Intel(R) Virtual Function Network Driver"; | |
52 | static const char igbvf_copyright[] = "Copyright (c) 2009 Intel Corporation."; | |
53 | ||
54 | static int igbvf_poll(struct napi_struct *napi, int budget); | |
2d165771 AD |
55 | static void igbvf_reset(struct igbvf_adapter *); |
56 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *); | |
57 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *); | |
d4e0fe01 AD |
58 | |
59 | static struct igbvf_info igbvf_vf_info = { | |
60 | .mac = e1000_vfadapt, | |
0364d6fd | 61 | .flags = 0, |
d4e0fe01 AD |
62 | .pba = 10, |
63 | .init_ops = e1000_init_function_pointers_vf, | |
64 | }; | |
65 | ||
66 | static const struct igbvf_info *igbvf_info_tbl[] = { | |
67 | [board_vf] = &igbvf_vf_info, | |
68 | }; | |
69 | ||
70 | /** | |
71 | * igbvf_desc_unused - calculate if we have unused descriptors | |
72 | **/ | |
73 | static int igbvf_desc_unused(struct igbvf_ring *ring) | |
74 | { | |
75 | if (ring->next_to_clean > ring->next_to_use) | |
76 | return ring->next_to_clean - ring->next_to_use - 1; | |
77 | ||
78 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
79 | } | |
80 | ||
81 | /** | |
82 | * igbvf_receive_skb - helper function to handle Rx indications | |
83 | * @adapter: board private structure | |
84 | * @status: descriptor status field as written by hardware | |
85 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
86 | * @skb: pointer to sk_buff to be indicated to stack | |
87 | **/ | |
88 | static void igbvf_receive_skb(struct igbvf_adapter *adapter, | |
89 | struct net_device *netdev, | |
90 | struct sk_buff *skb, | |
91 | u32 status, u16 vlan) | |
92 | { | |
93 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) | |
94 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
95 | le16_to_cpu(vlan) & | |
96 | E1000_RXD_SPC_VLAN_MASK); | |
97 | else | |
98 | netif_receive_skb(skb); | |
99 | ||
100 | netdev->last_rx = jiffies; | |
101 | } | |
102 | ||
103 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
104 | u32 status_err, struct sk_buff *skb) | |
105 | { | |
106 | skb->ip_summed = CHECKSUM_NONE; | |
107 | ||
108 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
109 | if ((status_err & E1000_RXD_STAT_IXSM) || |
110 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 111 | return; |
0364d6fd | 112 | |
d4e0fe01 AD |
113 | /* TCP/UDP checksum error bit is set */ |
114 | if (status_err & | |
115 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
116 | /* let the stack verify checksum errors */ | |
117 | adapter->hw_csum_err++; | |
118 | return; | |
119 | } | |
0364d6fd | 120 | |
d4e0fe01 AD |
121 | /* It must be a TCP or UDP packet with a valid checksum */ |
122 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
123 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
124 | ||
125 | adapter->hw_csum_good++; | |
126 | } | |
127 | ||
128 | /** | |
129 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
130 | * @rx_ring: address of ring structure to repopulate | |
131 | * @cleaned_count: number of buffers to repopulate | |
132 | **/ | |
133 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
134 | int cleaned_count) | |
135 | { | |
136 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
137 | struct net_device *netdev = adapter->netdev; | |
138 | struct pci_dev *pdev = adapter->pdev; | |
139 | union e1000_adv_rx_desc *rx_desc; | |
140 | struct igbvf_buffer *buffer_info; | |
141 | struct sk_buff *skb; | |
142 | unsigned int i; | |
143 | int bufsz; | |
144 | ||
145 | i = rx_ring->next_to_use; | |
146 | buffer_info = &rx_ring->buffer_info[i]; | |
147 | ||
148 | if (adapter->rx_ps_hdr_size) | |
149 | bufsz = adapter->rx_ps_hdr_size; | |
150 | else | |
151 | bufsz = adapter->rx_buffer_len; | |
152 | bufsz += NET_IP_ALIGN; | |
153 | ||
154 | while (cleaned_count--) { | |
155 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
156 | ||
157 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
158 | if (!buffer_info->page) { | |
159 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
160 | if (!buffer_info->page) { | |
161 | adapter->alloc_rx_buff_failed++; | |
162 | goto no_buffers; | |
163 | } | |
164 | buffer_info->page_offset = 0; | |
165 | } else { | |
166 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
167 | } | |
168 | buffer_info->page_dma = | |
169 | pci_map_page(pdev, buffer_info->page, | |
170 | buffer_info->page_offset, | |
171 | PAGE_SIZE / 2, | |
172 | PCI_DMA_FROMDEVICE); | |
173 | } | |
174 | ||
175 | if (!buffer_info->skb) { | |
176 | skb = netdev_alloc_skb(netdev, bufsz); | |
177 | if (!skb) { | |
178 | adapter->alloc_rx_buff_failed++; | |
179 | goto no_buffers; | |
180 | } | |
181 | ||
182 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
183 | * this will result in a 16 byte aligned IP header after | |
184 | * the 14 byte MAC header is removed | |
185 | */ | |
186 | skb_reserve(skb, NET_IP_ALIGN); | |
187 | ||
188 | buffer_info->skb = skb; | |
189 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
190 | bufsz, | |
191 | PCI_DMA_FROMDEVICE); | |
192 | } | |
193 | /* Refresh the desc even if buffer_addrs didn't change because | |
194 | * each write-back erases this info. */ | |
195 | if (adapter->rx_ps_hdr_size) { | |
196 | rx_desc->read.pkt_addr = | |
197 | cpu_to_le64(buffer_info->page_dma); | |
198 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
199 | } else { | |
200 | rx_desc->read.pkt_addr = | |
201 | cpu_to_le64(buffer_info->dma); | |
202 | rx_desc->read.hdr_addr = 0; | |
203 | } | |
204 | ||
205 | i++; | |
206 | if (i == rx_ring->count) | |
207 | i = 0; | |
208 | buffer_info = &rx_ring->buffer_info[i]; | |
209 | } | |
210 | ||
211 | no_buffers: | |
212 | if (rx_ring->next_to_use != i) { | |
213 | rx_ring->next_to_use = i; | |
214 | if (i == 0) | |
215 | i = (rx_ring->count - 1); | |
216 | else | |
217 | i--; | |
218 | ||
219 | /* Force memory writes to complete before letting h/w | |
220 | * know there are new descriptors to fetch. (Only | |
221 | * applicable for weak-ordered memory model archs, | |
222 | * such as IA-64). */ | |
223 | wmb(); | |
224 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
225 | } | |
226 | } | |
227 | ||
228 | /** | |
229 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
230 | * @adapter: board private structure | |
231 | * | |
232 | * the return value indicates whether actual cleaning was done, there | |
233 | * is no guarantee that everything was cleaned | |
234 | **/ | |
235 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
236 | int *work_done, int work_to_do) | |
237 | { | |
238 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
239 | struct net_device *netdev = adapter->netdev; | |
240 | struct pci_dev *pdev = adapter->pdev; | |
241 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
242 | struct igbvf_buffer *buffer_info, *next_buffer; | |
243 | struct sk_buff *skb; | |
244 | bool cleaned = false; | |
245 | int cleaned_count = 0; | |
246 | unsigned int total_bytes = 0, total_packets = 0; | |
247 | unsigned int i; | |
248 | u32 length, hlen, staterr; | |
249 | ||
250 | i = rx_ring->next_to_clean; | |
251 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
252 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
253 | ||
254 | while (staterr & E1000_RXD_STAT_DD) { | |
255 | if (*work_done >= work_to_do) | |
256 | break; | |
257 | (*work_done)++; | |
258 | ||
259 | buffer_info = &rx_ring->buffer_info[i]; | |
260 | ||
261 | /* HW will not DMA in data larger than the given buffer, even | |
262 | * if it parses the (NFS, of course) header to be larger. In | |
263 | * that case, it fills the header buffer and spills the rest | |
264 | * into the page. | |
265 | */ | |
266 | hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info) & | |
267 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
268 | if (hlen > adapter->rx_ps_hdr_size) | |
269 | hlen = adapter->rx_ps_hdr_size; | |
270 | ||
271 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
272 | cleaned = true; | |
273 | cleaned_count++; | |
274 | ||
275 | skb = buffer_info->skb; | |
276 | prefetch(skb->data - NET_IP_ALIGN); | |
277 | buffer_info->skb = NULL; | |
278 | if (!adapter->rx_ps_hdr_size) { | |
279 | pci_unmap_single(pdev, buffer_info->dma, | |
280 | adapter->rx_buffer_len, | |
281 | PCI_DMA_FROMDEVICE); | |
282 | buffer_info->dma = 0; | |
283 | skb_put(skb, length); | |
284 | goto send_up; | |
285 | } | |
286 | ||
287 | if (!skb_shinfo(skb)->nr_frags) { | |
288 | pci_unmap_single(pdev, buffer_info->dma, | |
289 | adapter->rx_ps_hdr_size + NET_IP_ALIGN, | |
290 | PCI_DMA_FROMDEVICE); | |
291 | skb_put(skb, hlen); | |
292 | } | |
293 | ||
294 | if (length) { | |
295 | pci_unmap_page(pdev, buffer_info->page_dma, | |
296 | PAGE_SIZE / 2, | |
297 | PCI_DMA_FROMDEVICE); | |
298 | buffer_info->page_dma = 0; | |
299 | ||
300 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, | |
301 | buffer_info->page, | |
302 | buffer_info->page_offset, | |
303 | length); | |
304 | ||
305 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
306 | (page_count(buffer_info->page) != 1)) | |
307 | buffer_info->page = NULL; | |
308 | else | |
309 | get_page(buffer_info->page); | |
310 | ||
311 | skb->len += length; | |
312 | skb->data_len += length; | |
313 | skb->truesize += length; | |
314 | } | |
315 | send_up: | |
316 | i++; | |
317 | if (i == rx_ring->count) | |
318 | i = 0; | |
319 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
320 | prefetch(next_rxd); | |
321 | next_buffer = &rx_ring->buffer_info[i]; | |
322 | ||
323 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
324 | buffer_info->skb = next_buffer->skb; | |
325 | buffer_info->dma = next_buffer->dma; | |
326 | next_buffer->skb = skb; | |
327 | next_buffer->dma = 0; | |
328 | goto next_desc; | |
329 | } | |
330 | ||
331 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
332 | dev_kfree_skb_irq(skb); | |
333 | goto next_desc; | |
334 | } | |
335 | ||
336 | total_bytes += skb->len; | |
337 | total_packets++; | |
338 | ||
339 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
340 | ||
341 | skb->protocol = eth_type_trans(skb, netdev); | |
342 | ||
343 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
344 | rx_desc->wb.upper.vlan); | |
345 | ||
346 | netdev->last_rx = jiffies; | |
347 | ||
348 | next_desc: | |
349 | rx_desc->wb.upper.status_error = 0; | |
350 | ||
351 | /* return some buffers to hardware, one at a time is too slow */ | |
352 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
353 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
354 | cleaned_count = 0; | |
355 | } | |
356 | ||
357 | /* use prefetched values */ | |
358 | rx_desc = next_rxd; | |
359 | buffer_info = next_buffer; | |
360 | ||
361 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
362 | } | |
363 | ||
364 | rx_ring->next_to_clean = i; | |
365 | cleaned_count = igbvf_desc_unused(rx_ring); | |
366 | ||
367 | if (cleaned_count) | |
368 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
369 | ||
370 | adapter->total_rx_packets += total_packets; | |
371 | adapter->total_rx_bytes += total_bytes; | |
372 | adapter->net_stats.rx_bytes += total_bytes; | |
373 | adapter->net_stats.rx_packets += total_packets; | |
374 | return cleaned; | |
375 | } | |
376 | ||
377 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
378 | struct igbvf_buffer *buffer_info) | |
379 | { | |
380 | buffer_info->dma = 0; | |
381 | if (buffer_info->skb) { | |
382 | skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb, | |
383 | DMA_TO_DEVICE); | |
384 | dev_kfree_skb_any(buffer_info->skb); | |
385 | buffer_info->skb = NULL; | |
386 | } | |
387 | buffer_info->time_stamp = 0; | |
388 | } | |
389 | ||
390 | static void igbvf_print_tx_hang(struct igbvf_adapter *adapter) | |
391 | { | |
392 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
393 | unsigned int i = tx_ring->next_to_clean; | |
394 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
395 | union e1000_adv_tx_desc *eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
396 | ||
397 | /* detected Tx unit hang */ | |
398 | dev_err(&adapter->pdev->dev, | |
399 | "Detected Tx Unit Hang:\n" | |
400 | " TDH <%x>\n" | |
401 | " TDT <%x>\n" | |
402 | " next_to_use <%x>\n" | |
403 | " next_to_clean <%x>\n" | |
404 | "buffer_info[next_to_clean]:\n" | |
405 | " time_stamp <%lx>\n" | |
406 | " next_to_watch <%x>\n" | |
407 | " jiffies <%lx>\n" | |
408 | " next_to_watch.status <%x>\n", | |
409 | readl(adapter->hw.hw_addr + tx_ring->head), | |
410 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
411 | tx_ring->next_to_use, | |
412 | tx_ring->next_to_clean, | |
413 | tx_ring->buffer_info[eop].time_stamp, | |
414 | eop, | |
415 | jiffies, | |
416 | eop_desc->wb.status); | |
417 | } | |
418 | ||
419 | /** | |
420 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
421 | * @adapter: board private structure | |
422 | * | |
423 | * Return 0 on success, negative on failure | |
424 | **/ | |
425 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
426 | struct igbvf_ring *tx_ring) | |
427 | { | |
428 | struct pci_dev *pdev = adapter->pdev; | |
429 | int size; | |
430 | ||
431 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
432 | tx_ring->buffer_info = vmalloc(size); | |
433 | if (!tx_ring->buffer_info) | |
434 | goto err; | |
435 | memset(tx_ring->buffer_info, 0, size); | |
436 | ||
437 | /* round up to nearest 4K */ | |
438 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
439 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
440 | ||
441 | tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size, | |
442 | &tx_ring->dma); | |
443 | ||
444 | if (!tx_ring->desc) | |
445 | goto err; | |
446 | ||
447 | tx_ring->adapter = adapter; | |
448 | tx_ring->next_to_use = 0; | |
449 | tx_ring->next_to_clean = 0; | |
450 | ||
451 | return 0; | |
452 | err: | |
453 | vfree(tx_ring->buffer_info); | |
454 | dev_err(&adapter->pdev->dev, | |
455 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
456 | return -ENOMEM; | |
457 | } | |
458 | ||
459 | /** | |
460 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
461 | * @adapter: board private structure | |
462 | * | |
463 | * Returns 0 on success, negative on failure | |
464 | **/ | |
465 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
466 | struct igbvf_ring *rx_ring) | |
467 | { | |
468 | struct pci_dev *pdev = adapter->pdev; | |
469 | int size, desc_len; | |
470 | ||
471 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
472 | rx_ring->buffer_info = vmalloc(size); | |
473 | if (!rx_ring->buffer_info) | |
474 | goto err; | |
475 | memset(rx_ring->buffer_info, 0, size); | |
476 | ||
477 | desc_len = sizeof(union e1000_adv_rx_desc); | |
478 | ||
479 | /* Round up to nearest 4K */ | |
480 | rx_ring->size = rx_ring->count * desc_len; | |
481 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
482 | ||
483 | rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size, | |
484 | &rx_ring->dma); | |
485 | ||
486 | if (!rx_ring->desc) | |
487 | goto err; | |
488 | ||
489 | rx_ring->next_to_clean = 0; | |
490 | rx_ring->next_to_use = 0; | |
491 | ||
492 | rx_ring->adapter = adapter; | |
493 | ||
494 | return 0; | |
495 | ||
496 | err: | |
497 | vfree(rx_ring->buffer_info); | |
498 | rx_ring->buffer_info = NULL; | |
499 | dev_err(&adapter->pdev->dev, | |
500 | "Unable to allocate memory for the receive descriptor ring\n"); | |
501 | return -ENOMEM; | |
502 | } | |
503 | ||
504 | /** | |
505 | * igbvf_clean_tx_ring - Free Tx Buffers | |
506 | * @tx_ring: ring to be cleaned | |
507 | **/ | |
508 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
509 | { | |
510 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
511 | struct igbvf_buffer *buffer_info; | |
512 | unsigned long size; | |
513 | unsigned int i; | |
514 | ||
515 | if (!tx_ring->buffer_info) | |
516 | return; | |
517 | ||
518 | /* Free all the Tx ring sk_buffs */ | |
519 | for (i = 0; i < tx_ring->count; i++) { | |
520 | buffer_info = &tx_ring->buffer_info[i]; | |
521 | igbvf_put_txbuf(adapter, buffer_info); | |
522 | } | |
523 | ||
524 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
525 | memset(tx_ring->buffer_info, 0, size); | |
526 | ||
527 | /* Zero out the descriptor ring */ | |
528 | memset(tx_ring->desc, 0, tx_ring->size); | |
529 | ||
530 | tx_ring->next_to_use = 0; | |
531 | tx_ring->next_to_clean = 0; | |
532 | ||
533 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
534 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
535 | } | |
536 | ||
537 | /** | |
538 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
539 | * @tx_ring: ring to free resources from | |
540 | * | |
541 | * Free all transmit software resources | |
542 | **/ | |
543 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
544 | { | |
545 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
546 | ||
547 | igbvf_clean_tx_ring(tx_ring); | |
548 | ||
549 | vfree(tx_ring->buffer_info); | |
550 | tx_ring->buffer_info = NULL; | |
551 | ||
552 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); | |
553 | ||
554 | tx_ring->desc = NULL; | |
555 | } | |
556 | ||
557 | /** | |
558 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
559 | * @adapter: board private structure | |
560 | **/ | |
561 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
562 | { | |
563 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
564 | struct igbvf_buffer *buffer_info; | |
565 | struct pci_dev *pdev = adapter->pdev; | |
566 | unsigned long size; | |
567 | unsigned int i; | |
568 | ||
569 | if (!rx_ring->buffer_info) | |
570 | return; | |
571 | ||
572 | /* Free all the Rx ring sk_buffs */ | |
573 | for (i = 0; i < rx_ring->count; i++) { | |
574 | buffer_info = &rx_ring->buffer_info[i]; | |
575 | if (buffer_info->dma) { | |
576 | if (adapter->rx_ps_hdr_size){ | |
577 | pci_unmap_single(pdev, buffer_info->dma, | |
578 | adapter->rx_ps_hdr_size, | |
579 | PCI_DMA_FROMDEVICE); | |
580 | } else { | |
581 | pci_unmap_single(pdev, buffer_info->dma, | |
582 | adapter->rx_buffer_len, | |
583 | PCI_DMA_FROMDEVICE); | |
584 | } | |
585 | buffer_info->dma = 0; | |
586 | } | |
587 | ||
588 | if (buffer_info->skb) { | |
589 | dev_kfree_skb(buffer_info->skb); | |
590 | buffer_info->skb = NULL; | |
591 | } | |
592 | ||
593 | if (buffer_info->page) { | |
594 | if (buffer_info->page_dma) | |
595 | pci_unmap_page(pdev, buffer_info->page_dma, | |
596 | PAGE_SIZE / 2, | |
597 | PCI_DMA_FROMDEVICE); | |
598 | put_page(buffer_info->page); | |
599 | buffer_info->page = NULL; | |
600 | buffer_info->page_dma = 0; | |
601 | buffer_info->page_offset = 0; | |
602 | } | |
603 | } | |
604 | ||
605 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
606 | memset(rx_ring->buffer_info, 0, size); | |
607 | ||
608 | /* Zero out the descriptor ring */ | |
609 | memset(rx_ring->desc, 0, rx_ring->size); | |
610 | ||
611 | rx_ring->next_to_clean = 0; | |
612 | rx_ring->next_to_use = 0; | |
613 | ||
614 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
615 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
616 | } | |
617 | ||
618 | /** | |
619 | * igbvf_free_rx_resources - Free Rx Resources | |
620 | * @rx_ring: ring to clean the resources from | |
621 | * | |
622 | * Free all receive software resources | |
623 | **/ | |
624 | ||
625 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
626 | { | |
627 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
628 | ||
629 | igbvf_clean_rx_ring(rx_ring); | |
630 | ||
631 | vfree(rx_ring->buffer_info); | |
632 | rx_ring->buffer_info = NULL; | |
633 | ||
634 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
635 | rx_ring->dma); | |
636 | rx_ring->desc = NULL; | |
637 | } | |
638 | ||
639 | /** | |
640 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
641 | * @adapter: pointer to adapter | |
642 | * @itr_setting: current adapter->itr | |
643 | * @packets: the number of packets during this measurement interval | |
644 | * @bytes: the number of bytes during this measurement interval | |
645 | * | |
646 | * Stores a new ITR value based on packets and byte | |
647 | * counts during the last interrupt. The advantage of per interrupt | |
648 | * computation is faster updates and more accurate ITR for the current | |
649 | * traffic pattern. Constants in this function were computed | |
650 | * based on theoretical maximum wire speed and thresholds were set based | |
651 | * on testing data as well as attempting to minimize response time | |
652 | * while increasing bulk throughput. This functionality is controlled | |
653 | * by the InterruptThrottleRate module parameter. | |
654 | **/ | |
655 | static unsigned int igbvf_update_itr(struct igbvf_adapter *adapter, | |
656 | u16 itr_setting, int packets, | |
657 | int bytes) | |
658 | { | |
659 | unsigned int retval = itr_setting; | |
660 | ||
661 | if (packets == 0) | |
662 | goto update_itr_done; | |
663 | ||
664 | switch (itr_setting) { | |
665 | case lowest_latency: | |
666 | /* handle TSO and jumbo frames */ | |
667 | if (bytes/packets > 8000) | |
668 | retval = bulk_latency; | |
669 | else if ((packets < 5) && (bytes > 512)) | |
670 | retval = low_latency; | |
671 | break; | |
672 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
673 | if (bytes > 10000) { | |
674 | /* this if handles the TSO accounting */ | |
675 | if (bytes/packets > 8000) | |
676 | retval = bulk_latency; | |
677 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
678 | retval = bulk_latency; | |
679 | else if ((packets > 35)) | |
680 | retval = lowest_latency; | |
681 | } else if (bytes/packets > 2000) { | |
682 | retval = bulk_latency; | |
683 | } else if (packets <= 2 && bytes < 512) { | |
684 | retval = lowest_latency; | |
685 | } | |
686 | break; | |
687 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
688 | if (bytes > 25000) { | |
689 | if (packets > 35) | |
690 | retval = low_latency; | |
691 | } else if (bytes < 6000) { | |
692 | retval = low_latency; | |
693 | } | |
694 | break; | |
695 | } | |
696 | ||
697 | update_itr_done: | |
698 | return retval; | |
699 | } | |
700 | ||
701 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
702 | { | |
703 | struct e1000_hw *hw = &adapter->hw; | |
704 | u16 current_itr; | |
705 | u32 new_itr = adapter->itr; | |
706 | ||
707 | adapter->tx_itr = igbvf_update_itr(adapter, adapter->tx_itr, | |
708 | adapter->total_tx_packets, | |
709 | adapter->total_tx_bytes); | |
710 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
711 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
712 | adapter->tx_itr = low_latency; | |
713 | ||
714 | adapter->rx_itr = igbvf_update_itr(adapter, adapter->rx_itr, | |
715 | adapter->total_rx_packets, | |
716 | adapter->total_rx_bytes); | |
717 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
718 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
719 | adapter->rx_itr = low_latency; | |
720 | ||
721 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
722 | ||
723 | switch (current_itr) { | |
724 | /* counts and packets in update_itr are dependent on these numbers */ | |
725 | case lowest_latency: | |
726 | new_itr = 70000; | |
727 | break; | |
728 | case low_latency: | |
729 | new_itr = 20000; /* aka hwitr = ~200 */ | |
730 | break; | |
731 | case bulk_latency: | |
732 | new_itr = 4000; | |
733 | break; | |
734 | default: | |
735 | break; | |
736 | } | |
737 | ||
738 | if (new_itr != adapter->itr) { | |
739 | /* | |
740 | * this attempts to bias the interrupt rate towards Bulk | |
741 | * by adding intermediate steps when interrupt rate is | |
742 | * increasing | |
743 | */ | |
744 | new_itr = new_itr > adapter->itr ? | |
745 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
746 | new_itr; | |
747 | adapter->itr = new_itr; | |
748 | adapter->rx_ring->itr_val = 1952; | |
749 | ||
750 | if (adapter->msix_entries) | |
751 | adapter->rx_ring->set_itr = 1; | |
752 | else | |
753 | ew32(ITR, 1952); | |
754 | } | |
755 | } | |
756 | ||
757 | /** | |
758 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
759 | * @adapter: board private structure | |
760 | * returns true if ring is completely cleaned | |
761 | **/ | |
762 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
763 | { | |
764 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
765 | struct e1000_hw *hw = &adapter->hw; | |
766 | struct net_device *netdev = adapter->netdev; | |
767 | struct igbvf_buffer *buffer_info; | |
768 | struct sk_buff *skb; | |
769 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
770 | unsigned int total_bytes = 0, total_packets = 0; | |
771 | unsigned int i, eop, count = 0; | |
772 | bool cleaned = false; | |
773 | ||
774 | i = tx_ring->next_to_clean; | |
775 | eop = tx_ring->buffer_info[i].next_to_watch; | |
776 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
777 | ||
778 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
779 | (count < tx_ring->count)) { | |
780 | for (cleaned = false; !cleaned; count++) { | |
781 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
782 | buffer_info = &tx_ring->buffer_info[i]; | |
783 | cleaned = (i == eop); | |
784 | skb = buffer_info->skb; | |
785 | ||
786 | if (skb) { | |
787 | unsigned int segs, bytecount; | |
788 | ||
789 | /* gso_segs is currently only valid for tcp */ | |
790 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
791 | /* multiply data chunks by size of headers */ | |
792 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
793 | skb->len; | |
794 | total_packets += segs; | |
795 | total_bytes += bytecount; | |
796 | } | |
797 | ||
798 | igbvf_put_txbuf(adapter, buffer_info); | |
799 | tx_desc->wb.status = 0; | |
800 | ||
801 | i++; | |
802 | if (i == tx_ring->count) | |
803 | i = 0; | |
804 | } | |
805 | eop = tx_ring->buffer_info[i].next_to_watch; | |
806 | eop_desc = IGBVF_TX_DESC_ADV(*tx_ring, eop); | |
807 | } | |
808 | ||
809 | tx_ring->next_to_clean = i; | |
810 | ||
811 | if (unlikely(count && | |
812 | netif_carrier_ok(netdev) && | |
813 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
814 | /* Make sure that anybody stopping the queue after this | |
815 | * sees the new next_to_clean. | |
816 | */ | |
817 | smp_mb(); | |
818 | if (netif_queue_stopped(netdev) && | |
819 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
820 | netif_wake_queue(netdev); | |
821 | ++adapter->restart_queue; | |
822 | } | |
823 | } | |
824 | ||
825 | if (adapter->detect_tx_hung) { | |
826 | /* Detect a transmit hang in hardware, this serializes the | |
827 | * check with the clearing of time_stamp and movement of i */ | |
828 | adapter->detect_tx_hung = false; | |
829 | if (tx_ring->buffer_info[i].time_stamp && | |
830 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + | |
831 | (adapter->tx_timeout_factor * HZ)) | |
832 | && !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
833 | ||
834 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
835 | /* detected Tx unit hang */ | |
836 | igbvf_print_tx_hang(adapter); | |
837 | ||
838 | netif_stop_queue(netdev); | |
839 | } | |
840 | } | |
841 | adapter->net_stats.tx_bytes += total_bytes; | |
842 | adapter->net_stats.tx_packets += total_packets; | |
843 | return (count < tx_ring->count); | |
844 | } | |
845 | ||
846 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
847 | { | |
848 | struct net_device *netdev = data; | |
849 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
850 | struct e1000_hw *hw = &adapter->hw; | |
851 | ||
852 | adapter->int_counter1++; | |
853 | ||
854 | netif_carrier_off(netdev); | |
855 | hw->mac.get_link_status = 1; | |
856 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
857 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
858 | ||
859 | ew32(EIMS, adapter->eims_other); | |
860 | ||
861 | return IRQ_HANDLED; | |
862 | } | |
863 | ||
864 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
865 | { | |
866 | struct net_device *netdev = data; | |
867 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
868 | struct e1000_hw *hw = &adapter->hw; | |
869 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
870 | ||
871 | ||
872 | adapter->total_tx_bytes = 0; | |
873 | adapter->total_tx_packets = 0; | |
874 | ||
875 | /* auto mask will automatically reenable the interrupt when we write | |
876 | * EICS */ | |
877 | if (!igbvf_clean_tx_irq(tx_ring)) | |
878 | /* Ring was not completely cleaned, so fire another interrupt */ | |
879 | ew32(EICS, tx_ring->eims_value); | |
880 | else | |
881 | ew32(EIMS, tx_ring->eims_value); | |
882 | ||
883 | return IRQ_HANDLED; | |
884 | } | |
885 | ||
886 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
887 | { | |
888 | struct net_device *netdev = data; | |
889 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
890 | ||
891 | adapter->int_counter0++; | |
892 | ||
893 | /* Write the ITR value calculated at the end of the | |
894 | * previous interrupt. | |
895 | */ | |
896 | if (adapter->rx_ring->set_itr) { | |
897 | writel(adapter->rx_ring->itr_val, | |
898 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
899 | adapter->rx_ring->set_itr = 0; | |
900 | } | |
901 | ||
902 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
903 | adapter->total_rx_bytes = 0; | |
904 | adapter->total_rx_packets = 0; | |
905 | __napi_schedule(&adapter->rx_ring->napi); | |
906 | } | |
907 | ||
908 | return IRQ_HANDLED; | |
909 | } | |
910 | ||
911 | #define IGBVF_NO_QUEUE -1 | |
912 | ||
913 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
914 | int tx_queue, int msix_vector) | |
915 | { | |
916 | struct e1000_hw *hw = &adapter->hw; | |
917 | u32 ivar, index; | |
918 | ||
919 | /* 82576 uses a table-based method for assigning vectors. | |
920 | Each queue has a single entry in the table to which we write | |
921 | a vector number along with a "valid" bit. Sadly, the layout | |
922 | of the table is somewhat counterintuitive. */ | |
923 | if (rx_queue > IGBVF_NO_QUEUE) { | |
924 | index = (rx_queue >> 1); | |
925 | ivar = array_er32(IVAR0, index); | |
926 | if (rx_queue & 0x1) { | |
927 | /* vector goes into third byte of register */ | |
928 | ivar = ivar & 0xFF00FFFF; | |
929 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
930 | } else { | |
931 | /* vector goes into low byte of register */ | |
932 | ivar = ivar & 0xFFFFFF00; | |
933 | ivar |= msix_vector | E1000_IVAR_VALID; | |
934 | } | |
935 | adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector; | |
936 | array_ew32(IVAR0, index, ivar); | |
937 | } | |
938 | if (tx_queue > IGBVF_NO_QUEUE) { | |
939 | index = (tx_queue >> 1); | |
940 | ivar = array_er32(IVAR0, index); | |
941 | if (tx_queue & 0x1) { | |
942 | /* vector goes into high byte of register */ | |
943 | ivar = ivar & 0x00FFFFFF; | |
944 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
945 | } else { | |
946 | /* vector goes into second byte of register */ | |
947 | ivar = ivar & 0xFFFF00FF; | |
948 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
949 | } | |
950 | adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector; | |
951 | array_ew32(IVAR0, index, ivar); | |
952 | } | |
953 | } | |
954 | ||
955 | /** | |
956 | * igbvf_configure_msix - Configure MSI-X hardware | |
957 | * | |
958 | * igbvf_configure_msix sets up the hardware to properly | |
959 | * generate MSI-X interrupts. | |
960 | **/ | |
961 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
962 | { | |
963 | u32 tmp; | |
964 | struct e1000_hw *hw = &adapter->hw; | |
965 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
966 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
967 | int vector = 0; | |
968 | ||
969 | adapter->eims_enable_mask = 0; | |
970 | ||
971 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
972 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
973 | if (tx_ring->itr_val) | |
974 | writel(tx_ring->itr_val, | |
975 | hw->hw_addr + tx_ring->itr_register); | |
976 | else | |
977 | writel(1952, hw->hw_addr + tx_ring->itr_register); | |
978 | ||
979 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); | |
980 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
981 | if (rx_ring->itr_val) | |
982 | writel(rx_ring->itr_val, | |
983 | hw->hw_addr + rx_ring->itr_register); | |
984 | else | |
985 | writel(1952, hw->hw_addr + rx_ring->itr_register); | |
986 | ||
987 | /* set vector for other causes, i.e. link changes */ | |
988 | ||
989 | tmp = (vector++ | E1000_IVAR_VALID); | |
990 | ||
991 | ew32(IVAR_MISC, tmp); | |
992 | ||
993 | adapter->eims_enable_mask = (1 << (vector)) - 1; | |
994 | adapter->eims_other = 1 << (vector - 1); | |
995 | e1e_flush(); | |
996 | } | |
997 | ||
2d165771 | 998 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
999 | { |
1000 | if (adapter->msix_entries) { | |
1001 | pci_disable_msix(adapter->pdev); | |
1002 | kfree(adapter->msix_entries); | |
1003 | adapter->msix_entries = NULL; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /** | |
1008 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
1009 | * | |
1010 | * Attempt to configure interrupts using the best available | |
1011 | * capabilities of the hardware and kernel. | |
1012 | **/ | |
2d165771 | 1013 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1014 | { |
1015 | int err = -ENOMEM; | |
1016 | int i; | |
1017 | ||
1018 | /* we allocate 3 vectors, 1 for tx, 1 for rx, one for pf messages */ | |
1019 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), | |
1020 | GFP_KERNEL); | |
1021 | if (adapter->msix_entries) { | |
1022 | for (i = 0; i < 3; i++) | |
1023 | adapter->msix_entries[i].entry = i; | |
1024 | ||
1025 | err = pci_enable_msix(adapter->pdev, | |
1026 | adapter->msix_entries, 3); | |
1027 | } | |
1028 | ||
1029 | if (err) { | |
1030 | /* MSI-X failed */ | |
1031 | dev_err(&adapter->pdev->dev, | |
1032 | "Failed to initialize MSI-X interrupts.\n"); | |
1033 | igbvf_reset_interrupt_capability(adapter); | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | /** | |
1038 | * igbvf_request_msix - Initialize MSI-X interrupts | |
1039 | * | |
1040 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1041 | * kernel. | |
1042 | **/ | |
1043 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1044 | { | |
1045 | struct net_device *netdev = adapter->netdev; | |
1046 | int err = 0, vector = 0; | |
1047 | ||
1048 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1049 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1050 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1051 | } else { | |
1052 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1053 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1054 | } | |
1055 | ||
1056 | err = request_irq(adapter->msix_entries[vector].vector, | |
1057 | &igbvf_intr_msix_tx, 0, adapter->tx_ring->name, | |
1058 | netdev); | |
1059 | if (err) | |
1060 | goto out; | |
1061 | ||
1062 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
1063 | adapter->tx_ring->itr_val = 1952; | |
1064 | vector++; | |
1065 | ||
1066 | err = request_irq(adapter->msix_entries[vector].vector, | |
1067 | &igbvf_intr_msix_rx, 0, adapter->rx_ring->name, | |
1068 | netdev); | |
1069 | if (err) | |
1070 | goto out; | |
1071 | ||
1072 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
1073 | adapter->rx_ring->itr_val = 1952; | |
1074 | vector++; | |
1075 | ||
1076 | err = request_irq(adapter->msix_entries[vector].vector, | |
1077 | &igbvf_msix_other, 0, netdev->name, netdev); | |
1078 | if (err) | |
1079 | goto out; | |
1080 | ||
1081 | igbvf_configure_msix(adapter); | |
1082 | return 0; | |
1083 | out: | |
1084 | return err; | |
1085 | } | |
1086 | ||
1087 | /** | |
1088 | * igbvf_alloc_queues - Allocate memory for all rings | |
1089 | * @adapter: board private structure to initialize | |
1090 | **/ | |
1091 | static int __devinit igbvf_alloc_queues(struct igbvf_adapter *adapter) | |
1092 | { | |
1093 | struct net_device *netdev = adapter->netdev; | |
1094 | ||
1095 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1096 | if (!adapter->tx_ring) | |
1097 | return -ENOMEM; | |
1098 | ||
1099 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1100 | if (!adapter->rx_ring) { | |
1101 | kfree(adapter->tx_ring); | |
1102 | return -ENOMEM; | |
1103 | } | |
1104 | ||
1105 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64); | |
1106 | ||
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | /** | |
1111 | * igbvf_request_irq - initialize interrupts | |
1112 | * | |
1113 | * Attempts to configure interrupts using the best available | |
1114 | * capabilities of the hardware and kernel. | |
1115 | **/ | |
1116 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1117 | { | |
1118 | int err = -1; | |
1119 | ||
1120 | /* igbvf supports msi-x only */ | |
1121 | if (adapter->msix_entries) | |
1122 | err = igbvf_request_msix(adapter); | |
1123 | ||
1124 | if (!err) | |
1125 | return err; | |
1126 | ||
1127 | dev_err(&adapter->pdev->dev, | |
1128 | "Unable to allocate interrupt, Error: %d\n", err); | |
1129 | ||
1130 | return err; | |
1131 | } | |
1132 | ||
1133 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1134 | { | |
1135 | struct net_device *netdev = adapter->netdev; | |
1136 | int vector; | |
1137 | ||
1138 | if (adapter->msix_entries) { | |
1139 | for (vector = 0; vector < 3; vector++) | |
1140 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /** | |
1145 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
1146 | **/ | |
1147 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1148 | { | |
1149 | struct e1000_hw *hw = &adapter->hw; | |
1150 | ||
1151 | ew32(EIMC, ~0); | |
1152 | ||
1153 | if (adapter->msix_entries) | |
1154 | ew32(EIAC, 0); | |
1155 | } | |
1156 | ||
1157 | /** | |
1158 | * igbvf_irq_enable - Enable default interrupt generation settings | |
1159 | **/ | |
1160 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1161 | { | |
1162 | struct e1000_hw *hw = &adapter->hw; | |
1163 | ||
1164 | ew32(EIAC, adapter->eims_enable_mask); | |
1165 | ew32(EIAM, adapter->eims_enable_mask); | |
1166 | ew32(EIMS, adapter->eims_enable_mask); | |
1167 | } | |
1168 | ||
1169 | /** | |
1170 | * igbvf_poll - NAPI Rx polling callback | |
1171 | * @napi: struct associated with this polling callback | |
1172 | * @budget: amount of packets driver is allowed to process this poll | |
1173 | **/ | |
1174 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1175 | { | |
1176 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1177 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1178 | struct e1000_hw *hw = &adapter->hw; | |
1179 | int work_done = 0; | |
1180 | ||
1181 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1182 | ||
1183 | /* If not enough Rx work done, exit the polling mode */ | |
1184 | if (work_done < budget) { | |
1185 | napi_complete(napi); | |
1186 | ||
1187 | if (adapter->itr_setting & 3) | |
1188 | igbvf_set_itr(adapter); | |
1189 | ||
1190 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1191 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1192 | } | |
1193 | ||
1194 | return work_done; | |
1195 | } | |
1196 | ||
1197 | /** | |
1198 | * igbvf_set_rlpml - set receive large packet maximum length | |
1199 | * @adapter: board private structure | |
1200 | * | |
1201 | * Configure the maximum size of packets that will be received | |
1202 | */ | |
1203 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1204 | { | |
1205 | int max_frame_size = adapter->max_frame_size; | |
1206 | struct e1000_hw *hw = &adapter->hw; | |
1207 | ||
1208 | if (adapter->vlgrp) | |
1209 | max_frame_size += VLAN_TAG_SIZE; | |
1210 | ||
1211 | e1000_rlpml_set_vf(hw, max_frame_size); | |
1212 | } | |
1213 | ||
1214 | static void igbvf_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
1215 | { | |
1216 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1217 | struct e1000_hw *hw = &adapter->hw; | |
1218 | ||
1219 | if (hw->mac.ops.set_vfta(hw, vid, true)) | |
1220 | dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid); | |
1221 | } | |
1222 | ||
1223 | static void igbvf_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
1224 | { | |
1225 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1226 | struct e1000_hw *hw = &adapter->hw; | |
1227 | ||
1228 | igbvf_irq_disable(adapter); | |
1229 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
1230 | ||
1231 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1232 | igbvf_irq_enable(adapter); | |
1233 | ||
1234 | if (hw->mac.ops.set_vfta(hw, vid, false)) | |
1235 | dev_err(&adapter->pdev->dev, | |
1236 | "Failed to remove vlan id %d\n", vid); | |
1237 | } | |
1238 | ||
1239 | static void igbvf_vlan_rx_register(struct net_device *netdev, | |
1240 | struct vlan_group *grp) | |
1241 | { | |
1242 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1243 | ||
1244 | adapter->vlgrp = grp; | |
1245 | } | |
1246 | ||
1247 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1248 | { | |
1249 | u16 vid; | |
1250 | ||
1251 | if (!adapter->vlgrp) | |
1252 | return; | |
1253 | ||
1254 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
1255 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
1256 | continue; | |
1257 | igbvf_vlan_rx_add_vid(adapter->netdev, vid); | |
1258 | } | |
1259 | ||
1260 | igbvf_set_rlpml(adapter); | |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1265 | * @adapter: board private structure | |
1266 | * | |
1267 | * Configure the Tx unit of the MAC after a reset. | |
1268 | **/ | |
1269 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1270 | { | |
1271 | struct e1000_hw *hw = &adapter->hw; | |
1272 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1273 | u64 tdba; | |
1274 | u32 txdctl, dca_txctrl; | |
1275 | ||
1276 | /* disable transmits */ | |
1277 | txdctl = er32(TXDCTL(0)); | |
1278 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1279 | msleep(10); | |
1280 | ||
1281 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1282 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1283 | tdba = tx_ring->dma; | |
8e20ce94 | 1284 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1285 | ew32(TDBAH(0), (tdba >> 32)); |
1286 | ew32(TDH(0), 0); | |
1287 | ew32(TDT(0), 0); | |
1288 | tx_ring->head = E1000_TDH(0); | |
1289 | tx_ring->tail = E1000_TDT(0); | |
1290 | ||
1291 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1292 | * MUST be delivered in order or it will completely screw up | |
1293 | * our bookeeping. | |
1294 | */ | |
1295 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1296 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1297 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1298 | ||
1299 | /* enable transmits */ | |
1300 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1301 | ew32(TXDCTL(0), txdctl); | |
1302 | ||
1303 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1304 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1305 | ||
1306 | /* enable Report Status bit */ | |
1307 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
1308 | ||
1309 | adapter->tx_queue_len = adapter->netdev->tx_queue_len; | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * igbvf_setup_srrctl - configure the receive control registers | |
1314 | * @adapter: Board private structure | |
1315 | **/ | |
1316 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1317 | { | |
1318 | struct e1000_hw *hw = &adapter->hw; | |
1319 | u32 srrctl = 0; | |
1320 | ||
1321 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
1322 | E1000_SRRCTL_BSIZEHDR_MASK | | |
1323 | E1000_SRRCTL_BSIZEPKT_MASK); | |
1324 | ||
1325 | /* Enable queue drop to avoid head of line blocking */ | |
1326 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1327 | ||
1328 | /* Setup buffer sizes */ | |
1329 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
1330 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
1331 | ||
1332 | if (adapter->rx_buffer_len < 2048) { | |
1333 | adapter->rx_ps_hdr_size = 0; | |
1334 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1335 | } else { | |
1336 | adapter->rx_ps_hdr_size = 128; | |
1337 | srrctl |= adapter->rx_ps_hdr_size << | |
1338 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; | |
1339 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
1340 | } | |
1341 | ||
1342 | ew32(SRRCTL(0), srrctl); | |
1343 | } | |
1344 | ||
1345 | /** | |
1346 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1347 | * @adapter: board private structure | |
1348 | * | |
1349 | * Configure the Rx unit of the MAC after a reset. | |
1350 | **/ | |
1351 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1352 | { | |
1353 | struct e1000_hw *hw = &adapter->hw; | |
1354 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1355 | u64 rdba; | |
1356 | u32 rdlen, rxdctl; | |
1357 | ||
1358 | /* disable receives */ | |
1359 | rxdctl = er32(RXDCTL(0)); | |
1360 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1361 | msleep(10); | |
1362 | ||
1363 | rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc); | |
1364 | ||
1365 | /* | |
1366 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
1367 | * the Base and Length of the Rx Descriptor Ring | |
1368 | */ | |
1369 | rdba = rx_ring->dma; | |
8e20ce94 | 1370 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1371 | ew32(RDBAH(0), (rdba >> 32)); |
1372 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1373 | rx_ring->head = E1000_RDH(0); | |
1374 | rx_ring->tail = E1000_RDT(0); | |
1375 | ew32(RDH(0), 0); | |
1376 | ew32(RDT(0), 0); | |
1377 | ||
1378 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1379 | rxdctl &= 0xFFF00000; | |
1380 | rxdctl |= IGBVF_RX_PTHRESH; | |
1381 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1382 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1383 | ||
1384 | igbvf_set_rlpml(adapter); | |
1385 | ||
1386 | /* enable receives */ | |
1387 | ew32(RXDCTL(0), rxdctl); | |
1388 | } | |
1389 | ||
1390 | /** | |
1391 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1392 | * @netdev: network interface device structure | |
1393 | * | |
1394 | * The set_multi entry point is called whenever the multicast address | |
1395 | * list or the network interface flags are updated. This routine is | |
1396 | * responsible for configuring the hardware for proper multicast, | |
1397 | * promiscuous mode, and all-multi behavior. | |
1398 | **/ | |
1399 | static void igbvf_set_multi(struct net_device *netdev) | |
1400 | { | |
1401 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1402 | struct e1000_hw *hw = &adapter->hw; | |
1403 | struct dev_mc_list *mc_ptr; | |
1404 | u8 *mta_list = NULL; | |
1405 | int i; | |
1406 | ||
1407 | if (netdev->mc_count) { | |
1408 | mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC); | |
1409 | if (!mta_list) { | |
1410 | dev_err(&adapter->pdev->dev, | |
1411 | "failed to allocate multicast filter list\n"); | |
1412 | return; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | /* prepare a packed array of only addresses. */ | |
1417 | mc_ptr = netdev->mc_list; | |
1418 | ||
1419 | for (i = 0; i < netdev->mc_count; i++) { | |
1420 | if (!mc_ptr) | |
1421 | break; | |
1422 | memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, | |
1423 | ETH_ALEN); | |
1424 | mc_ptr = mc_ptr->next; | |
1425 | } | |
1426 | ||
1427 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); | |
1428 | kfree(mta_list); | |
1429 | } | |
1430 | ||
1431 | /** | |
1432 | * igbvf_configure - configure the hardware for Rx and Tx | |
1433 | * @adapter: private board structure | |
1434 | **/ | |
1435 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1436 | { | |
1437 | igbvf_set_multi(adapter->netdev); | |
1438 | ||
1439 | igbvf_restore_vlan(adapter); | |
1440 | ||
1441 | igbvf_configure_tx(adapter); | |
1442 | igbvf_setup_srrctl(adapter); | |
1443 | igbvf_configure_rx(adapter); | |
1444 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
1445 | igbvf_desc_unused(adapter->rx_ring)); | |
1446 | } | |
1447 | ||
1448 | /* igbvf_reset - bring the hardware into a known good state | |
1449 | * | |
1450 | * This function boots the hardware and enables some settings that | |
1451 | * require a configuration cycle of the hardware - those cannot be | |
1452 | * set/changed during runtime. After reset the device needs to be | |
1453 | * properly configured for Rx, Tx etc. | |
1454 | */ | |
2d165771 | 1455 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1456 | { |
1457 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1458 | struct net_device *netdev = adapter->netdev; | |
1459 | struct e1000_hw *hw = &adapter->hw; | |
1460 | ||
1461 | /* Allow time for pending master requests to run */ | |
1462 | if (mac->ops.reset_hw(hw)) | |
1463 | dev_err(&adapter->pdev->dev, "PF still resetting\n"); | |
1464 | ||
1465 | mac->ops.init_hw(hw); | |
1466 | ||
1467 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { | |
1468 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, | |
1469 | netdev->addr_len); | |
1470 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, | |
1471 | netdev->addr_len); | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | int igbvf_up(struct igbvf_adapter *adapter) | |
1476 | { | |
1477 | struct e1000_hw *hw = &adapter->hw; | |
1478 | ||
1479 | /* hardware has been reset, we need to reload some things */ | |
1480 | igbvf_configure(adapter); | |
1481 | ||
1482 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1483 | ||
1484 | napi_enable(&adapter->rx_ring->napi); | |
1485 | if (adapter->msix_entries) | |
1486 | igbvf_configure_msix(adapter); | |
1487 | ||
1488 | /* Clear any pending interrupts. */ | |
1489 | er32(EICR); | |
1490 | igbvf_irq_enable(adapter); | |
1491 | ||
1492 | /* start the watchdog */ | |
1493 | hw->mac.get_link_status = 1; | |
1494 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1495 | ||
1496 | ||
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | void igbvf_down(struct igbvf_adapter *adapter) | |
1501 | { | |
1502 | struct net_device *netdev = adapter->netdev; | |
1503 | struct e1000_hw *hw = &adapter->hw; | |
1504 | u32 rxdctl, txdctl; | |
1505 | ||
1506 | /* | |
1507 | * signal that we're down so the interrupt handler does not | |
1508 | * reschedule our watchdog timer | |
1509 | */ | |
1510 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1511 | ||
1512 | /* disable receives in the hardware */ | |
1513 | rxdctl = er32(RXDCTL(0)); | |
1514 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1515 | ||
1516 | netif_stop_queue(netdev); | |
1517 | ||
1518 | /* disable transmits in the hardware */ | |
1519 | txdctl = er32(TXDCTL(0)); | |
1520 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1521 | ||
1522 | /* flush both disables and wait for them to finish */ | |
1523 | e1e_flush(); | |
1524 | msleep(10); | |
1525 | ||
1526 | napi_disable(&adapter->rx_ring->napi); | |
1527 | ||
1528 | igbvf_irq_disable(adapter); | |
1529 | ||
1530 | del_timer_sync(&adapter->watchdog_timer); | |
1531 | ||
1532 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1533 | netif_carrier_off(netdev); | |
1534 | ||
1535 | /* record the stats before reset*/ | |
1536 | igbvf_update_stats(adapter); | |
1537 | ||
1538 | adapter->link_speed = 0; | |
1539 | adapter->link_duplex = 0; | |
1540 | ||
1541 | igbvf_reset(adapter); | |
1542 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1543 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1544 | } | |
1545 | ||
1546 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1547 | { | |
1548 | might_sleep(); | |
1549 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
1550 | msleep(1); | |
1551 | igbvf_down(adapter); | |
1552 | igbvf_up(adapter); | |
1553 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1554 | } | |
1555 | ||
1556 | /** | |
1557 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1558 | * @adapter: board private structure to initialize | |
1559 | * | |
1560 | * igbvf_sw_init initializes the Adapter private data structure. | |
1561 | * Fields are initialized based on PCI device information and | |
1562 | * OS network device settings (MTU size). | |
1563 | **/ | |
1564 | static int __devinit igbvf_sw_init(struct igbvf_adapter *adapter) | |
1565 | { | |
1566 | struct net_device *netdev = adapter->netdev; | |
1567 | s32 rc; | |
1568 | ||
1569 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1570 | adapter->rx_ps_hdr_size = 0; | |
1571 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1572 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1573 | ||
1574 | adapter->tx_int_delay = 8; | |
1575 | adapter->tx_abs_int_delay = 32; | |
1576 | adapter->rx_int_delay = 0; | |
1577 | adapter->rx_abs_int_delay = 8; | |
1578 | adapter->itr_setting = 3; | |
1579 | adapter->itr = 20000; | |
1580 | ||
1581 | /* Set various function pointers */ | |
1582 | adapter->ei->init_ops(&adapter->hw); | |
1583 | ||
1584 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1585 | if (rc) | |
1586 | return rc; | |
1587 | ||
1588 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1589 | if (rc) | |
1590 | return rc; | |
1591 | ||
1592 | igbvf_set_interrupt_capability(adapter); | |
1593 | ||
1594 | if (igbvf_alloc_queues(adapter)) | |
1595 | return -ENOMEM; | |
1596 | ||
1597 | spin_lock_init(&adapter->tx_queue_lock); | |
1598 | ||
1599 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1600 | igbvf_irq_disable(adapter); | |
1601 | ||
1602 | spin_lock_init(&adapter->stats_lock); | |
1603 | ||
1604 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1609 | { | |
1610 | struct e1000_hw *hw = &adapter->hw; | |
1611 | ||
1612 | adapter->stats.last_gprc = er32(VFGPRC); | |
1613 | adapter->stats.last_gorc = er32(VFGORC); | |
1614 | adapter->stats.last_gptc = er32(VFGPTC); | |
1615 | adapter->stats.last_gotc = er32(VFGOTC); | |
1616 | adapter->stats.last_mprc = er32(VFMPRC); | |
1617 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1618 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1619 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1620 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1621 | ||
1622 | adapter->stats.base_gprc = er32(VFGPRC); | |
1623 | adapter->stats.base_gorc = er32(VFGORC); | |
1624 | adapter->stats.base_gptc = er32(VFGPTC); | |
1625 | adapter->stats.base_gotc = er32(VFGOTC); | |
1626 | adapter->stats.base_mprc = er32(VFMPRC); | |
1627 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1628 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1629 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1630 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1631 | } | |
1632 | ||
1633 | /** | |
1634 | * igbvf_open - Called when a network interface is made active | |
1635 | * @netdev: network interface device structure | |
1636 | * | |
1637 | * Returns 0 on success, negative value on failure | |
1638 | * | |
1639 | * The open entry point is called when a network interface is made | |
1640 | * active by the system (IFF_UP). At this point all resources needed | |
1641 | * for transmit and receive operations are allocated, the interrupt | |
1642 | * handler is registered with the OS, the watchdog timer is started, | |
1643 | * and the stack is notified that the interface is ready. | |
1644 | **/ | |
1645 | static int igbvf_open(struct net_device *netdev) | |
1646 | { | |
1647 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1648 | struct e1000_hw *hw = &adapter->hw; | |
1649 | int err; | |
1650 | ||
1651 | /* disallow open during test */ | |
1652 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1653 | return -EBUSY; | |
1654 | ||
1655 | /* allocate transmit descriptors */ | |
1656 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1657 | if (err) | |
1658 | goto err_setup_tx; | |
1659 | ||
1660 | /* allocate receive descriptors */ | |
1661 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1662 | if (err) | |
1663 | goto err_setup_rx; | |
1664 | ||
1665 | /* | |
1666 | * before we allocate an interrupt, we must be ready to handle it. | |
1667 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1668 | * as soon as we call pci_request_irq, so we have to setup our | |
1669 | * clean_rx handler before we do so. | |
1670 | */ | |
1671 | igbvf_configure(adapter); | |
1672 | ||
1673 | err = igbvf_request_irq(adapter); | |
1674 | if (err) | |
1675 | goto err_req_irq; | |
1676 | ||
1677 | /* From here on the code is the same as igbvf_up() */ | |
1678 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1679 | ||
1680 | napi_enable(&adapter->rx_ring->napi); | |
1681 | ||
1682 | /* clear any pending interrupts */ | |
1683 | er32(EICR); | |
1684 | ||
1685 | igbvf_irq_enable(adapter); | |
1686 | ||
1687 | /* start the watchdog */ | |
1688 | hw->mac.get_link_status = 1; | |
1689 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1690 | ||
1691 | return 0; | |
1692 | ||
1693 | err_req_irq: | |
1694 | igbvf_free_rx_resources(adapter->rx_ring); | |
1695 | err_setup_rx: | |
1696 | igbvf_free_tx_resources(adapter->tx_ring); | |
1697 | err_setup_tx: | |
1698 | igbvf_reset(adapter); | |
1699 | ||
1700 | return err; | |
1701 | } | |
1702 | ||
1703 | /** | |
1704 | * igbvf_close - Disables a network interface | |
1705 | * @netdev: network interface device structure | |
1706 | * | |
1707 | * Returns 0, this is not allowed to fail | |
1708 | * | |
1709 | * The close entry point is called when an interface is de-activated | |
1710 | * by the OS. The hardware is still under the drivers control, but | |
1711 | * needs to be disabled. A global MAC reset is issued to stop the | |
1712 | * hardware, and all transmit and receive resources are freed. | |
1713 | **/ | |
1714 | static int igbvf_close(struct net_device *netdev) | |
1715 | { | |
1716 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1717 | ||
1718 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1719 | igbvf_down(adapter); | |
1720 | ||
1721 | igbvf_free_irq(adapter); | |
1722 | ||
1723 | igbvf_free_tx_resources(adapter->tx_ring); | |
1724 | igbvf_free_rx_resources(adapter->rx_ring); | |
1725 | ||
1726 | return 0; | |
1727 | } | |
1728 | /** | |
1729 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1730 | * @netdev: network interface device structure | |
1731 | * @p: pointer to an address structure | |
1732 | * | |
1733 | * Returns 0 on success, negative on failure | |
1734 | **/ | |
1735 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1736 | { | |
1737 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1738 | struct e1000_hw *hw = &adapter->hw; | |
1739 | struct sockaddr *addr = p; | |
1740 | ||
1741 | if (!is_valid_ether_addr(addr->sa_data)) | |
1742 | return -EADDRNOTAVAIL; | |
1743 | ||
1744 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1745 | ||
1746 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
1747 | ||
1748 | if (memcmp(addr->sa_data, hw->mac.addr, 6)) | |
1749 | return -EADDRNOTAVAIL; | |
1750 | ||
1751 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1752 | ||
1753 | return 0; | |
1754 | } | |
1755 | ||
1756 | #define UPDATE_VF_COUNTER(reg, name) \ | |
1757 | { \ | |
1758 | u32 current_counter = er32(reg); \ | |
1759 | if (current_counter < adapter->stats.last_##name) \ | |
1760 | adapter->stats.name += 0x100000000LL; \ | |
1761 | adapter->stats.last_##name = current_counter; \ | |
1762 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1763 | adapter->stats.name |= current_counter; \ | |
1764 | } | |
1765 | ||
1766 | /** | |
1767 | * igbvf_update_stats - Update the board statistics counters | |
1768 | * @adapter: board private structure | |
1769 | **/ | |
1770 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1771 | { | |
1772 | struct e1000_hw *hw = &adapter->hw; | |
1773 | struct pci_dev *pdev = adapter->pdev; | |
1774 | ||
1775 | /* | |
1776 | * Prevent stats update while adapter is being reset, link is down | |
1777 | * or if the pci connection is down. | |
1778 | */ | |
1779 | if (adapter->link_speed == 0) | |
1780 | return; | |
1781 | ||
1782 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1783 | return; | |
1784 | ||
1785 | if (pci_channel_offline(pdev)) | |
1786 | return; | |
1787 | ||
1788 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1789 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1790 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1791 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1792 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1793 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1794 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1795 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1796 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1797 | ||
1798 | /* Fill out the OS statistics structure */ | |
1799 | adapter->net_stats.multicast = adapter->stats.mprc; | |
1800 | } | |
1801 | ||
1802 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1803 | { | |
1804 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s\n", | |
1805 | adapter->link_speed, | |
1806 | ((adapter->link_duplex == FULL_DUPLEX) ? | |
1807 | "Full Duplex" : "Half Duplex")); | |
1808 | } | |
1809 | ||
1810 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1811 | { | |
1812 | struct e1000_hw *hw = &adapter->hw; | |
1813 | s32 ret_val = E1000_SUCCESS; | |
1814 | bool link_active; | |
1815 | ||
1816 | ret_val = hw->mac.ops.check_for_link(hw); | |
1817 | link_active = !hw->mac.get_link_status; | |
1818 | ||
1819 | /* if check for link returns error we will need to reset */ | |
1820 | if (ret_val) | |
1821 | schedule_work(&adapter->reset_task); | |
1822 | ||
1823 | return link_active; | |
1824 | } | |
1825 | ||
1826 | /** | |
1827 | * igbvf_watchdog - Timer Call-back | |
1828 | * @data: pointer to adapter cast into an unsigned long | |
1829 | **/ | |
1830 | static void igbvf_watchdog(unsigned long data) | |
1831 | { | |
1832 | struct igbvf_adapter *adapter = (struct igbvf_adapter *) data; | |
1833 | ||
1834 | /* Do the rest outside of interrupt context */ | |
1835 | schedule_work(&adapter->watchdog_task); | |
1836 | } | |
1837 | ||
1838 | static void igbvf_watchdog_task(struct work_struct *work) | |
1839 | { | |
1840 | struct igbvf_adapter *adapter = container_of(work, | |
1841 | struct igbvf_adapter, | |
1842 | watchdog_task); | |
1843 | struct net_device *netdev = adapter->netdev; | |
1844 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1845 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1846 | struct e1000_hw *hw = &adapter->hw; | |
1847 | u32 link; | |
1848 | int tx_pending = 0; | |
1849 | ||
1850 | link = igbvf_has_link(adapter); | |
1851 | ||
1852 | if (link) { | |
1853 | if (!netif_carrier_ok(netdev)) { | |
1854 | bool txb2b = 1; | |
1855 | ||
1856 | mac->ops.get_link_up_info(&adapter->hw, | |
1857 | &adapter->link_speed, | |
1858 | &adapter->link_duplex); | |
1859 | igbvf_print_link_info(adapter); | |
1860 | ||
1861 | /* | |
1862 | * tweak tx_queue_len according to speed/duplex | |
1863 | * and adjust the timeout factor | |
1864 | */ | |
1865 | netdev->tx_queue_len = adapter->tx_queue_len; | |
1866 | adapter->tx_timeout_factor = 1; | |
1867 | switch (adapter->link_speed) { | |
1868 | case SPEED_10: | |
1869 | txb2b = 0; | |
1870 | netdev->tx_queue_len = 10; | |
1871 | adapter->tx_timeout_factor = 16; | |
1872 | break; | |
1873 | case SPEED_100: | |
1874 | txb2b = 0; | |
1875 | netdev->tx_queue_len = 100; | |
1876 | /* maybe add some timeout factor ? */ | |
1877 | break; | |
1878 | } | |
1879 | ||
1880 | netif_carrier_on(netdev); | |
1881 | netif_wake_queue(netdev); | |
1882 | } | |
1883 | } else { | |
1884 | if (netif_carrier_ok(netdev)) { | |
1885 | adapter->link_speed = 0; | |
1886 | adapter->link_duplex = 0; | |
1887 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1888 | netif_carrier_off(netdev); | |
1889 | netif_stop_queue(netdev); | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | if (netif_carrier_ok(netdev)) { | |
1894 | igbvf_update_stats(adapter); | |
1895 | } else { | |
1896 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
1897 | tx_ring->count); | |
1898 | if (tx_pending) { | |
1899 | /* | |
1900 | * We've lost link, so the controller stops DMA, | |
1901 | * but we've got queued Tx work that's never going | |
1902 | * to get done, so reset controller to flush Tx. | |
1903 | * (Do the reset outside of interrupt context). | |
1904 | */ | |
1905 | adapter->tx_timeout_count++; | |
1906 | schedule_work(&adapter->reset_task); | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1911 | ew32(EICS, adapter->rx_ring->eims_value); | |
1912 | ||
1913 | /* Force detection of hung controller every watchdog period */ | |
1914 | adapter->detect_tx_hung = 1; | |
1915 | ||
1916 | /* Reset the timer */ | |
1917 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1918 | mod_timer(&adapter->watchdog_timer, | |
1919 | round_jiffies(jiffies + (2 * HZ))); | |
1920 | } | |
1921 | ||
1922 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 | |
1923 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1924 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1925 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1926 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1927 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
1928 | ||
1929 | static int igbvf_tso(struct igbvf_adapter *adapter, | |
1930 | struct igbvf_ring *tx_ring, | |
1931 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
1932 | { | |
1933 | struct e1000_adv_tx_context_desc *context_desc; | |
1934 | unsigned int i; | |
1935 | int err; | |
1936 | struct igbvf_buffer *buffer_info; | |
1937 | u32 info = 0, tu_cmd = 0; | |
1938 | u32 mss_l4len_idx, l4len; | |
1939 | *hdr_len = 0; | |
1940 | ||
1941 | if (skb_header_cloned(skb)) { | |
1942 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1943 | if (err) { | |
1944 | dev_err(&adapter->pdev->dev, | |
1945 | "igbvf_tso returning an error\n"); | |
1946 | return err; | |
1947 | } | |
1948 | } | |
1949 | ||
1950 | l4len = tcp_hdrlen(skb); | |
1951 | *hdr_len += l4len; | |
1952 | ||
1953 | if (skb->protocol == htons(ETH_P_IP)) { | |
1954 | struct iphdr *iph = ip_hdr(skb); | |
1955 | iph->tot_len = 0; | |
1956 | iph->check = 0; | |
1957 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
1958 | iph->daddr, 0, | |
1959 | IPPROTO_TCP, | |
1960 | 0); | |
1961 | } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { | |
1962 | ipv6_hdr(skb)->payload_len = 0; | |
1963 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
1964 | &ipv6_hdr(skb)->daddr, | |
1965 | 0, IPPROTO_TCP, 0); | |
1966 | } | |
1967 | ||
1968 | i = tx_ring->next_to_use; | |
1969 | ||
1970 | buffer_info = &tx_ring->buffer_info[i]; | |
1971 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1972 | /* VLAN MACLEN IPLEN */ | |
1973 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
1974 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
1975 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
1976 | *hdr_len += skb_network_offset(skb); | |
1977 | info |= (skb_transport_header(skb) - skb_network_header(skb)); | |
1978 | *hdr_len += (skb_transport_header(skb) - skb_network_header(skb)); | |
1979 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
1980 | ||
1981 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
1982 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
1983 | ||
1984 | if (skb->protocol == htons(ETH_P_IP)) | |
1985 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
1986 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
1987 | ||
1988 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
1989 | ||
1990 | /* MSS L4LEN IDX */ | |
1991 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
1992 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
1993 | ||
1994 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
1995 | context_desc->seqnum_seed = 0; | |
1996 | ||
1997 | buffer_info->time_stamp = jiffies; | |
1998 | buffer_info->next_to_watch = i; | |
1999 | buffer_info->dma = 0; | |
2000 | i++; | |
2001 | if (i == tx_ring->count) | |
2002 | i = 0; | |
2003 | ||
2004 | tx_ring->next_to_use = i; | |
2005 | ||
2006 | return true; | |
2007 | } | |
2008 | ||
2009 | static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter, | |
2010 | struct igbvf_ring *tx_ring, | |
2011 | struct sk_buff *skb, u32 tx_flags) | |
2012 | { | |
2013 | struct e1000_adv_tx_context_desc *context_desc; | |
2014 | unsigned int i; | |
2015 | struct igbvf_buffer *buffer_info; | |
2016 | u32 info = 0, tu_cmd = 0; | |
2017 | ||
2018 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
2019 | (tx_flags & IGBVF_TX_FLAGS_VLAN)) { | |
2020 | i = tx_ring->next_to_use; | |
2021 | buffer_info = &tx_ring->buffer_info[i]; | |
2022 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
2023 | ||
2024 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2025 | info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK); | |
2026 | ||
2027 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
2028 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
2029 | info |= (skb_transport_header(skb) - | |
2030 | skb_network_header(skb)); | |
2031 | ||
2032 | ||
2033 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
2034 | ||
2035 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
2036 | ||
2037 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2038 | switch (skb->protocol) { | |
2039 | case __constant_htons(ETH_P_IP): | |
2040 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
2041 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2042 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2043 | break; | |
2044 | case __constant_htons(ETH_P_IPV6): | |
2045 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2046 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
2047 | break; | |
2048 | default: | |
2049 | break; | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
2054 | context_desc->seqnum_seed = 0; | |
2055 | context_desc->mss_l4len_idx = 0; | |
2056 | ||
2057 | buffer_info->time_stamp = jiffies; | |
2058 | buffer_info->next_to_watch = i; | |
2059 | buffer_info->dma = 0; | |
2060 | i++; | |
2061 | if (i == tx_ring->count) | |
2062 | i = 0; | |
2063 | tx_ring->next_to_use = i; | |
2064 | ||
2065 | return true; | |
2066 | } | |
2067 | ||
2068 | return false; | |
2069 | } | |
2070 | ||
2071 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2072 | { | |
2073 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2074 | ||
2075 | /* there is enough descriptors then we don't need to worry */ | |
2076 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2077 | return 0; | |
2078 | ||
2079 | netif_stop_queue(netdev); | |
2080 | ||
2081 | smp_mb(); | |
2082 | ||
2083 | /* We need to check again just in case room has been made available */ | |
2084 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2085 | return -EBUSY; | |
2086 | ||
2087 | netif_wake_queue(netdev); | |
2088 | ||
2089 | ++adapter->restart_queue; | |
2090 | return 0; | |
2091 | } | |
2092 | ||
2093 | #define IGBVF_MAX_TXD_PWR 16 | |
2094 | #define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR) | |
2095 | ||
2096 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
2097 | struct igbvf_ring *tx_ring, | |
2098 | struct sk_buff *skb, | |
2099 | unsigned int first) | |
2100 | { | |
2101 | struct igbvf_buffer *buffer_info; | |
2102 | unsigned int len = skb_headlen(skb); | |
2103 | unsigned int count = 0, i; | |
2104 | unsigned int f; | |
2105 | dma_addr_t *map; | |
2106 | ||
2107 | i = tx_ring->next_to_use; | |
2108 | ||
2109 | if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { | |
2110 | dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); | |
2111 | return 0; | |
2112 | } | |
2113 | ||
2114 | map = skb_shinfo(skb)->dma_maps; | |
2115 | ||
2116 | buffer_info = &tx_ring->buffer_info[i]; | |
2117 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2118 | buffer_info->length = len; | |
2119 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2120 | buffer_info->time_stamp = jiffies; | |
2121 | buffer_info->next_to_watch = i; | |
042a53a9 | 2122 | buffer_info->dma = skb_shinfo(skb)->dma_head; |
d4e0fe01 AD |
2123 | |
2124 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
2125 | struct skb_frag_struct *frag; | |
2126 | ||
2127 | i++; | |
2128 | if (i == tx_ring->count) | |
2129 | i = 0; | |
2130 | ||
2131 | frag = &skb_shinfo(skb)->frags[f]; | |
2132 | len = frag->size; | |
2133 | ||
2134 | buffer_info = &tx_ring->buffer_info[i]; | |
2135 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2136 | buffer_info->length = len; | |
2137 | buffer_info->time_stamp = jiffies; | |
2138 | buffer_info->next_to_watch = i; | |
2139 | buffer_info->dma = map[count]; | |
2140 | count++; | |
2141 | } | |
2142 | ||
2143 | tx_ring->buffer_info[i].skb = skb; | |
2144 | tx_ring->buffer_info[first].next_to_watch = i; | |
2145 | ||
042a53a9 | 2146 | return count + 1; |
d4e0fe01 AD |
2147 | } |
2148 | ||
2149 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
2150 | struct igbvf_ring *tx_ring, | |
2151 | int tx_flags, int count, u32 paylen, | |
2152 | u8 hdr_len) | |
2153 | { | |
2154 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2155 | struct igbvf_buffer *buffer_info; | |
2156 | u32 olinfo_status = 0, cmd_type_len; | |
2157 | unsigned int i; | |
2158 | ||
2159 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
2160 | E1000_ADVTXD_DCMD_DEXT); | |
2161 | ||
2162 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2163 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2164 | ||
2165 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2166 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2167 | ||
2168 | /* insert tcp checksum */ | |
2169 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2170 | ||
2171 | /* insert ip checksum */ | |
2172 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2173 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2174 | ||
2175 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2176 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2177 | } | |
2178 | ||
2179 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2180 | ||
2181 | i = tx_ring->next_to_use; | |
2182 | while (count--) { | |
2183 | buffer_info = &tx_ring->buffer_info[i]; | |
2184 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2185 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2186 | tx_desc->read.cmd_type_len = | |
2187 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
2188 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
2189 | i++; | |
2190 | if (i == tx_ring->count) | |
2191 | i = 0; | |
2192 | } | |
2193 | ||
2194 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2195 | /* Force memory writes to complete before letting h/w | |
2196 | * know there are new descriptors to fetch. (Only | |
2197 | * applicable for weak-ordered memory model archs, | |
2198 | * such as IA-64). */ | |
2199 | wmb(); | |
2200 | ||
2201 | tx_ring->next_to_use = i; | |
2202 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
2203 | /* we need this if more than one processor can write to our tail | |
2204 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2205 | mmiowb(); | |
2206 | } | |
2207 | ||
2208 | static int igbvf_xmit_frame_ring_adv(struct sk_buff *skb, | |
2209 | struct net_device *netdev, | |
2210 | struct igbvf_ring *tx_ring) | |
2211 | { | |
2212 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2213 | unsigned int first, tx_flags = 0; | |
2214 | u8 hdr_len = 0; | |
2215 | int count = 0; | |
2216 | int tso = 0; | |
2217 | ||
2218 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2219 | dev_kfree_skb_any(skb); | |
2220 | return NETDEV_TX_OK; | |
2221 | } | |
2222 | ||
2223 | if (skb->len <= 0) { | |
2224 | dev_kfree_skb_any(skb); | |
2225 | return NETDEV_TX_OK; | |
2226 | } | |
2227 | ||
2228 | /* | |
2229 | * need: count + 4 desc gap to keep tail from touching | |
2230 | * + 2 desc gap to keep tail from touching head, | |
2231 | * + 1 desc for skb->data, | |
2232 | * + 1 desc for context descriptor, | |
2233 | * head, otherwise try next time | |
2234 | */ | |
2235 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2236 | /* this is a hard error */ | |
2237 | return NETDEV_TX_BUSY; | |
2238 | } | |
2239 | ||
2240 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
2241 | tx_flags |= IGBVF_TX_FLAGS_VLAN; | |
2242 | tx_flags |= (vlan_tx_tag_get(skb) << IGBVF_TX_FLAGS_VLAN_SHIFT); | |
2243 | } | |
2244 | ||
2245 | if (skb->protocol == htons(ETH_P_IP)) | |
2246 | tx_flags |= IGBVF_TX_FLAGS_IPV4; | |
2247 | ||
2248 | first = tx_ring->next_to_use; | |
2249 | ||
2250 | tso = skb_is_gso(skb) ? | |
2251 | igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len) : 0; | |
2252 | if (unlikely(tso < 0)) { | |
2253 | dev_kfree_skb_any(skb); | |
2254 | return NETDEV_TX_OK; | |
2255 | } | |
2256 | ||
2257 | if (tso) | |
2258 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
2259 | else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags) && | |
2260 | (skb->ip_summed == CHECKSUM_PARTIAL)) | |
2261 | tx_flags |= IGBVF_TX_FLAGS_CSUM; | |
2262 | ||
2263 | /* | |
2264 | * count reflects descriptors mapped, if 0 then mapping error | |
2265 | * has occured and we need to rewind the descriptor queue | |
2266 | */ | |
2267 | count = igbvf_tx_map_adv(adapter, tx_ring, skb, first); | |
2268 | ||
2269 | if (count) { | |
2270 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
2271 | skb->len, hdr_len); | |
d4e0fe01 AD |
2272 | /* Make sure there is space in the ring for the next send. */ |
2273 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2274 | } else { | |
2275 | dev_kfree_skb_any(skb); | |
2276 | tx_ring->buffer_info[first].time_stamp = 0; | |
2277 | tx_ring->next_to_use = first; | |
2278 | } | |
2279 | ||
2280 | return NETDEV_TX_OK; | |
2281 | } | |
2282 | ||
2283 | static int igbvf_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2284 | { | |
2285 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2286 | struct igbvf_ring *tx_ring; | |
2287 | int retval; | |
2288 | ||
2289 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2290 | dev_kfree_skb_any(skb); | |
2291 | return NETDEV_TX_OK; | |
2292 | } | |
2293 | ||
2294 | tx_ring = &adapter->tx_ring[0]; | |
2295 | ||
2296 | retval = igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); | |
2297 | ||
2298 | return retval; | |
2299 | } | |
2300 | ||
2301 | /** | |
2302 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2303 | * @netdev: network interface device structure | |
2304 | **/ | |
2305 | static void igbvf_tx_timeout(struct net_device *netdev) | |
2306 | { | |
2307 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2308 | ||
2309 | /* Do the reset outside of interrupt context */ | |
2310 | adapter->tx_timeout_count++; | |
2311 | schedule_work(&adapter->reset_task); | |
2312 | } | |
2313 | ||
2314 | static void igbvf_reset_task(struct work_struct *work) | |
2315 | { | |
2316 | struct igbvf_adapter *adapter; | |
2317 | adapter = container_of(work, struct igbvf_adapter, reset_task); | |
2318 | ||
2319 | igbvf_reinit_locked(adapter); | |
2320 | } | |
2321 | ||
2322 | /** | |
2323 | * igbvf_get_stats - Get System Network Statistics | |
2324 | * @netdev: network interface device structure | |
2325 | * | |
2326 | * Returns the address of the device statistics structure. | |
2327 | * The statistics are actually updated from the timer callback. | |
2328 | **/ | |
2329 | static struct net_device_stats *igbvf_get_stats(struct net_device *netdev) | |
2330 | { | |
2331 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2332 | ||
2333 | /* only return the current stats */ | |
2334 | return &adapter->net_stats; | |
2335 | } | |
2336 | ||
2337 | /** | |
2338 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2339 | * @netdev: network interface device structure | |
2340 | * @new_mtu: new value for maximum frame size | |
2341 | * | |
2342 | * Returns 0 on success, negative on failure | |
2343 | **/ | |
2344 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2345 | { | |
2346 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2347 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2348 | ||
2349 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2350 | dev_err(&adapter->pdev->dev, "Invalid MTU setting\n"); | |
2351 | return -EINVAL; | |
2352 | } | |
2353 | ||
d4e0fe01 AD |
2354 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
2355 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
2356 | dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); | |
2357 | return -EINVAL; | |
2358 | } | |
2359 | ||
2360 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2361 | msleep(1); | |
2362 | /* igbvf_down has a dependency on max_frame_size */ | |
2363 | adapter->max_frame_size = max_frame; | |
2364 | if (netif_running(netdev)) | |
2365 | igbvf_down(adapter); | |
2366 | ||
2367 | /* | |
2368 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
2369 | * means we reserve 2 more, this pushes us to allocate from the next | |
2370 | * larger slab size. | |
2371 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2372 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2373 | * fragmented skbs | |
2374 | */ | |
2375 | ||
2376 | if (max_frame <= 1024) | |
2377 | adapter->rx_buffer_len = 1024; | |
2378 | else if (max_frame <= 2048) | |
2379 | adapter->rx_buffer_len = 2048; | |
2380 | else | |
2381 | #if (PAGE_SIZE / 2) > 16384 | |
2382 | adapter->rx_buffer_len = 16384; | |
2383 | #else | |
2384 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2385 | #endif | |
2386 | ||
2387 | ||
2388 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
2389 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
2390 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
2391 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + | |
2392 | ETH_FCS_LEN; | |
2393 | ||
2394 | dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", | |
2395 | netdev->mtu, new_mtu); | |
2396 | netdev->mtu = new_mtu; | |
2397 | ||
2398 | if (netif_running(netdev)) | |
2399 | igbvf_up(adapter); | |
2400 | else | |
2401 | igbvf_reset(adapter); | |
2402 | ||
2403 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2404 | ||
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2409 | { | |
2410 | switch (cmd) { | |
2411 | default: | |
2412 | return -EOPNOTSUPP; | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state) | |
2417 | { | |
2418 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2419 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2420 | #ifdef CONFIG_PM | |
2421 | int retval = 0; | |
2422 | #endif | |
2423 | ||
2424 | netif_device_detach(netdev); | |
2425 | ||
2426 | if (netif_running(netdev)) { | |
2427 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2428 | igbvf_down(adapter); | |
2429 | igbvf_free_irq(adapter); | |
2430 | } | |
2431 | ||
2432 | #ifdef CONFIG_PM | |
2433 | retval = pci_save_state(pdev); | |
2434 | if (retval) | |
2435 | return retval; | |
2436 | #endif | |
2437 | ||
2438 | pci_disable_device(pdev); | |
2439 | ||
2440 | return 0; | |
2441 | } | |
2442 | ||
2443 | #ifdef CONFIG_PM | |
2444 | static int igbvf_resume(struct pci_dev *pdev) | |
2445 | { | |
2446 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2447 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2448 | u32 err; | |
2449 | ||
2450 | pci_restore_state(pdev); | |
2451 | err = pci_enable_device_mem(pdev); | |
2452 | if (err) { | |
2453 | dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n"); | |
2454 | return err; | |
2455 | } | |
2456 | ||
2457 | pci_set_master(pdev); | |
2458 | ||
2459 | if (netif_running(netdev)) { | |
2460 | err = igbvf_request_irq(adapter); | |
2461 | if (err) | |
2462 | return err; | |
2463 | } | |
2464 | ||
2465 | igbvf_reset(adapter); | |
2466 | ||
2467 | if (netif_running(netdev)) | |
2468 | igbvf_up(adapter); | |
2469 | ||
2470 | netif_device_attach(netdev); | |
2471 | ||
2472 | return 0; | |
2473 | } | |
2474 | #endif | |
2475 | ||
2476 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2477 | { | |
2478 | igbvf_suspend(pdev, PMSG_SUSPEND); | |
2479 | } | |
2480 | ||
2481 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2482 | /* | |
2483 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
2484 | * without having to re-enable interrupts. It's not called while | |
2485 | * the interrupt routine is executing. | |
2486 | */ | |
2487 | static void igbvf_netpoll(struct net_device *netdev) | |
2488 | { | |
2489 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2490 | ||
2491 | disable_irq(adapter->pdev->irq); | |
2492 | ||
2493 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2494 | ||
2495 | enable_irq(adapter->pdev->irq); | |
2496 | } | |
2497 | #endif | |
2498 | ||
2499 | /** | |
2500 | * igbvf_io_error_detected - called when PCI error is detected | |
2501 | * @pdev: Pointer to PCI device | |
2502 | * @state: The current pci connection state | |
2503 | * | |
2504 | * This function is called after a PCI bus error affecting | |
2505 | * this device has been detected. | |
2506 | */ | |
2507 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
2508 | pci_channel_state_t state) | |
2509 | { | |
2510 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2511 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2512 | ||
2513 | netif_device_detach(netdev); | |
2514 | ||
2515 | if (netif_running(netdev)) | |
2516 | igbvf_down(adapter); | |
2517 | pci_disable_device(pdev); | |
2518 | ||
2519 | /* Request a slot slot reset. */ | |
2520 | return PCI_ERS_RESULT_NEED_RESET; | |
2521 | } | |
2522 | ||
2523 | /** | |
2524 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2525 | * @pdev: Pointer to PCI device | |
2526 | * | |
2527 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2528 | * resembles the first-half of the igbvf_resume routine. | |
2529 | */ | |
2530 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2531 | { | |
2532 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2533 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2534 | ||
2535 | if (pci_enable_device_mem(pdev)) { | |
2536 | dev_err(&pdev->dev, | |
2537 | "Cannot re-enable PCI device after reset.\n"); | |
2538 | return PCI_ERS_RESULT_DISCONNECT; | |
2539 | } | |
2540 | pci_set_master(pdev); | |
2541 | ||
2542 | igbvf_reset(adapter); | |
2543 | ||
2544 | return PCI_ERS_RESULT_RECOVERED; | |
2545 | } | |
2546 | ||
2547 | /** | |
2548 | * igbvf_io_resume - called when traffic can start flowing again. | |
2549 | * @pdev: Pointer to PCI device | |
2550 | * | |
2551 | * This callback is called when the error recovery driver tells us that | |
2552 | * its OK to resume normal operation. Implementation resembles the | |
2553 | * second-half of the igbvf_resume routine. | |
2554 | */ | |
2555 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2556 | { | |
2557 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2558 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2559 | ||
2560 | if (netif_running(netdev)) { | |
2561 | if (igbvf_up(adapter)) { | |
2562 | dev_err(&pdev->dev, | |
2563 | "can't bring device back up after reset\n"); | |
2564 | return; | |
2565 | } | |
2566 | } | |
2567 | ||
2568 | netif_device_attach(netdev); | |
2569 | } | |
2570 | ||
2571 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) | |
2572 | { | |
2573 | struct e1000_hw *hw = &adapter->hw; | |
2574 | struct net_device *netdev = adapter->netdev; | |
2575 | struct pci_dev *pdev = adapter->pdev; | |
2576 | ||
2577 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
2578 | dev_info(&pdev->dev, "Address: %02x:%02x:%02x:%02x:%02x:%02x\n", | |
2579 | /* MAC address */ | |
2580 | netdev->dev_addr[0], netdev->dev_addr[1], | |
2581 | netdev->dev_addr[2], netdev->dev_addr[3], | |
2582 | netdev->dev_addr[4], netdev->dev_addr[5]); | |
2583 | dev_info(&pdev->dev, "MAC: %d\n", hw->mac.type); | |
2584 | } | |
2585 | ||
2586 | static const struct net_device_ops igbvf_netdev_ops = { | |
2587 | .ndo_open = igbvf_open, | |
2588 | .ndo_stop = igbvf_close, | |
2589 | .ndo_start_xmit = igbvf_xmit_frame, | |
2590 | .ndo_get_stats = igbvf_get_stats, | |
2591 | .ndo_set_multicast_list = igbvf_set_multi, | |
2592 | .ndo_set_mac_address = igbvf_set_mac, | |
2593 | .ndo_change_mtu = igbvf_change_mtu, | |
2594 | .ndo_do_ioctl = igbvf_ioctl, | |
2595 | .ndo_tx_timeout = igbvf_tx_timeout, | |
2596 | .ndo_vlan_rx_register = igbvf_vlan_rx_register, | |
2597 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, | |
2598 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
2599 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2600 | .ndo_poll_controller = igbvf_netpoll, | |
2601 | #endif | |
2602 | }; | |
2603 | ||
2604 | /** | |
2605 | * igbvf_probe - Device Initialization Routine | |
2606 | * @pdev: PCI device information struct | |
2607 | * @ent: entry in igbvf_pci_tbl | |
2608 | * | |
2609 | * Returns 0 on success, negative on failure | |
2610 | * | |
2611 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2612 | * The OS initialization, configuring of the adapter private structure, | |
2613 | * and a hardware reset occur. | |
2614 | **/ | |
2615 | static int __devinit igbvf_probe(struct pci_dev *pdev, | |
2616 | const struct pci_device_id *ent) | |
2617 | { | |
2618 | struct net_device *netdev; | |
2619 | struct igbvf_adapter *adapter; | |
2620 | struct e1000_hw *hw; | |
2621 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
2622 | ||
2623 | static int cards_found; | |
2624 | int err, pci_using_dac; | |
2625 | ||
2626 | err = pci_enable_device_mem(pdev); | |
2627 | if (err) | |
2628 | return err; | |
2629 | ||
2630 | pci_using_dac = 0; | |
8e20ce94 | 2631 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
d4e0fe01 | 2632 | if (!err) { |
8e20ce94 | 2633 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
d4e0fe01 AD |
2634 | if (!err) |
2635 | pci_using_dac = 1; | |
2636 | } else { | |
8e20ce94 | 2637 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
d4e0fe01 | 2638 | if (err) { |
8e20ce94 AM |
2639 | err = pci_set_consistent_dma_mask(pdev, |
2640 | DMA_BIT_MASK(32)); | |
d4e0fe01 AD |
2641 | if (err) { |
2642 | dev_err(&pdev->dev, "No usable DMA " | |
2643 | "configuration, aborting\n"); | |
2644 | goto err_dma; | |
2645 | } | |
2646 | } | |
2647 | } | |
2648 | ||
2649 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2650 | if (err) | |
2651 | goto err_pci_reg; | |
2652 | ||
2653 | pci_set_master(pdev); | |
2654 | ||
2655 | err = -ENOMEM; | |
2656 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2657 | if (!netdev) | |
2658 | goto err_alloc_etherdev; | |
2659 | ||
2660 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2661 | ||
2662 | pci_set_drvdata(pdev, netdev); | |
2663 | adapter = netdev_priv(netdev); | |
2664 | hw = &adapter->hw; | |
2665 | adapter->netdev = netdev; | |
2666 | adapter->pdev = pdev; | |
2667 | adapter->ei = ei; | |
2668 | adapter->pba = ei->pba; | |
2669 | adapter->flags = ei->flags; | |
2670 | adapter->hw.back = adapter; | |
2671 | adapter->hw.mac.type = ei->mac; | |
2672 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; | |
2673 | ||
2674 | /* PCI config space info */ | |
2675 | ||
2676 | hw->vendor_id = pdev->vendor; | |
2677 | hw->device_id = pdev->device; | |
2678 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2679 | hw->subsystem_device_id = pdev->subsystem_device; | |
2680 | ||
2681 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
2682 | ||
2683 | err = -EIO; | |
2684 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
2685 | pci_resource_len(pdev, 0)); | |
2686 | ||
2687 | if (!adapter->hw.hw_addr) | |
2688 | goto err_ioremap; | |
2689 | ||
2690 | if (ei->get_variants) { | |
2691 | err = ei->get_variants(adapter); | |
2692 | if (err) | |
2693 | goto err_ioremap; | |
2694 | } | |
2695 | ||
2696 | /* setup adapter struct */ | |
2697 | err = igbvf_sw_init(adapter); | |
2698 | if (err) | |
2699 | goto err_sw_init; | |
2700 | ||
2701 | /* construct the net_device struct */ | |
2702 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2703 | ||
2704 | igbvf_set_ethtool_ops(netdev); | |
2705 | netdev->watchdog_timeo = 5 * HZ; | |
2706 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2707 | ||
2708 | adapter->bd_number = cards_found++; | |
2709 | ||
2710 | netdev->features = NETIF_F_SG | | |
2711 | NETIF_F_IP_CSUM | | |
2712 | NETIF_F_HW_VLAN_TX | | |
2713 | NETIF_F_HW_VLAN_RX | | |
2714 | NETIF_F_HW_VLAN_FILTER; | |
2715 | ||
2716 | netdev->features |= NETIF_F_IPV6_CSUM; | |
2717 | netdev->features |= NETIF_F_TSO; | |
2718 | netdev->features |= NETIF_F_TSO6; | |
2719 | ||
2720 | if (pci_using_dac) | |
2721 | netdev->features |= NETIF_F_HIGHDMA; | |
2722 | ||
2723 | netdev->vlan_features |= NETIF_F_TSO; | |
2724 | netdev->vlan_features |= NETIF_F_TSO6; | |
2725 | netdev->vlan_features |= NETIF_F_IP_CSUM; | |
2726 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; | |
2727 | netdev->vlan_features |= NETIF_F_SG; | |
2728 | ||
2729 | /*reset the controller to put the device in a known good state */ | |
2730 | err = hw->mac.ops.reset_hw(hw); | |
2731 | if (err) { | |
2732 | dev_info(&pdev->dev, | |
2733 | "PF still in reset state, assigning new address\n"); | |
2734 | random_ether_addr(hw->mac.addr); | |
2735 | } else { | |
2736 | err = hw->mac.ops.read_mac_addr(hw); | |
2737 | if (err) { | |
2738 | dev_err(&pdev->dev, "Error reading MAC address\n"); | |
2739 | goto err_hw_init; | |
2740 | } | |
2741 | } | |
2742 | ||
2743 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2744 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
2745 | ||
2746 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
2747 | dev_err(&pdev->dev, "Invalid MAC Address: " | |
2748 | "%02x:%02x:%02x:%02x:%02x:%02x\n", | |
2749 | netdev->dev_addr[0], netdev->dev_addr[1], | |
2750 | netdev->dev_addr[2], netdev->dev_addr[3], | |
2751 | netdev->dev_addr[4], netdev->dev_addr[5]); | |
2752 | err = -EIO; | |
2753 | goto err_hw_init; | |
2754 | } | |
2755 | ||
2756 | setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, | |
2757 | (unsigned long) adapter); | |
2758 | ||
2759 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2760 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2761 | ||
2762 | /* ring size defaults */ | |
2763 | adapter->rx_ring->count = 1024; | |
2764 | adapter->tx_ring->count = 1024; | |
2765 | ||
2766 | /* reset the hardware with the new settings */ | |
2767 | igbvf_reset(adapter); | |
2768 | ||
2769 | /* tell the stack to leave us alone until igbvf_open() is called */ | |
2770 | netif_carrier_off(netdev); | |
2771 | netif_stop_queue(netdev); | |
2772 | ||
2773 | strcpy(netdev->name, "eth%d"); | |
2774 | err = register_netdev(netdev); | |
2775 | if (err) | |
2776 | goto err_hw_init; | |
2777 | ||
2778 | igbvf_print_device_info(adapter); | |
2779 | ||
2780 | igbvf_initialize_last_counter_stats(adapter); | |
2781 | ||
2782 | return 0; | |
2783 | ||
2784 | err_hw_init: | |
2785 | kfree(adapter->tx_ring); | |
2786 | kfree(adapter->rx_ring); | |
2787 | err_sw_init: | |
2788 | igbvf_reset_interrupt_capability(adapter); | |
2789 | iounmap(adapter->hw.hw_addr); | |
2790 | err_ioremap: | |
2791 | free_netdev(netdev); | |
2792 | err_alloc_etherdev: | |
2793 | pci_release_regions(pdev); | |
2794 | err_pci_reg: | |
2795 | err_dma: | |
2796 | pci_disable_device(pdev); | |
2797 | return err; | |
2798 | } | |
2799 | ||
2800 | /** | |
2801 | * igbvf_remove - Device Removal Routine | |
2802 | * @pdev: PCI device information struct | |
2803 | * | |
2804 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2805 | * that it should release a PCI device. The could be caused by a | |
2806 | * Hot-Plug event, or because the driver is going to be removed from | |
2807 | * memory. | |
2808 | **/ | |
2809 | static void __devexit igbvf_remove(struct pci_dev *pdev) | |
2810 | { | |
2811 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2812 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2813 | struct e1000_hw *hw = &adapter->hw; | |
2814 | ||
2815 | /* | |
2816 | * flush_scheduled work may reschedule our watchdog task, so | |
2817 | * explicitly disable watchdog tasks from being rescheduled | |
2818 | */ | |
2819 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2820 | del_timer_sync(&adapter->watchdog_timer); | |
2821 | ||
2822 | flush_scheduled_work(); | |
2823 | ||
2824 | unregister_netdev(netdev); | |
2825 | ||
2826 | igbvf_reset_interrupt_capability(adapter); | |
2827 | ||
2828 | /* | |
2829 | * it is important to delete the napi struct prior to freeing the | |
2830 | * rx ring so that you do not end up with null pointer refs | |
2831 | */ | |
2832 | netif_napi_del(&adapter->rx_ring->napi); | |
2833 | kfree(adapter->tx_ring); | |
2834 | kfree(adapter->rx_ring); | |
2835 | ||
2836 | iounmap(hw->hw_addr); | |
2837 | if (hw->flash_address) | |
2838 | iounmap(hw->flash_address); | |
2839 | pci_release_regions(pdev); | |
2840 | ||
2841 | free_netdev(netdev); | |
2842 | ||
2843 | pci_disable_device(pdev); | |
2844 | } | |
2845 | ||
2846 | /* PCI Error Recovery (ERS) */ | |
2847 | static struct pci_error_handlers igbvf_err_handler = { | |
2848 | .error_detected = igbvf_io_error_detected, | |
2849 | .slot_reset = igbvf_io_slot_reset, | |
2850 | .resume = igbvf_io_resume, | |
2851 | }; | |
2852 | ||
2853 | static struct pci_device_id igbvf_pci_tbl[] = { | |
2854 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, | |
2855 | { } /* terminate list */ | |
2856 | }; | |
2857 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2858 | ||
2859 | /* PCI Device API Driver */ | |
2860 | static struct pci_driver igbvf_driver = { | |
2861 | .name = igbvf_driver_name, | |
2862 | .id_table = igbvf_pci_tbl, | |
2863 | .probe = igbvf_probe, | |
2864 | .remove = __devexit_p(igbvf_remove), | |
2865 | #ifdef CONFIG_PM | |
2866 | /* Power Management Hooks */ | |
2867 | .suspend = igbvf_suspend, | |
2868 | .resume = igbvf_resume, | |
2869 | #endif | |
2870 | .shutdown = igbvf_shutdown, | |
2871 | .err_handler = &igbvf_err_handler | |
2872 | }; | |
2873 | ||
2874 | /** | |
2875 | * igbvf_init_module - Driver Registration Routine | |
2876 | * | |
2877 | * igbvf_init_module is the first routine called when the driver is | |
2878 | * loaded. All it does is register with the PCI subsystem. | |
2879 | **/ | |
2880 | static int __init igbvf_init_module(void) | |
2881 | { | |
2882 | int ret; | |
2883 | printk(KERN_INFO "%s - version %s\n", | |
2884 | igbvf_driver_string, igbvf_driver_version); | |
2885 | printk(KERN_INFO "%s\n", igbvf_copyright); | |
2886 | ||
2887 | ret = pci_register_driver(&igbvf_driver); | |
2888 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name, | |
2889 | PM_QOS_DEFAULT_VALUE); | |
2890 | ||
2891 | return ret; | |
2892 | } | |
2893 | module_init(igbvf_init_module); | |
2894 | ||
2895 | /** | |
2896 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2897 | * | |
2898 | * igbvf_exit_module is called just before the driver is removed | |
2899 | * from memory. | |
2900 | **/ | |
2901 | static void __exit igbvf_exit_module(void) | |
2902 | { | |
2903 | pci_unregister_driver(&igbvf_driver); | |
2904 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name); | |
2905 | } | |
2906 | module_exit(igbvf_exit_module); | |
2907 | ||
2908 | ||
2909 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
2910 | MODULE_DESCRIPTION("Intel(R) 82576 Virtual Function Network Driver"); | |
2911 | MODULE_LICENSE("GPL"); | |
2912 | MODULE_VERSION(DRV_VERSION); | |
2913 | ||
2914 | /* netdev.c */ |